OpenCloudOS-Kernel/drivers/net/wireless/mac80211_hwsim.c

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// SPDX-License-Identifier: GPL-2.0-only
/*
* mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211
* Copyright (c) 2008, Jouni Malinen <j@w1.fi>
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
* Copyright (c) 2011, Javier Lopez <jlopex@gmail.com>
* Copyright (c) 2016 - 2017 Intel Deutschland GmbH
* Copyright (C) 2018 - 2022 Intel Corporation
*/
/*
* TODO:
* - Add TSF sync and fix IBSS beacon transmission by adding
* competition for "air time" at TBTT
* - RX filtering based on filter configuration (data->rx_filter)
*/
#include <linux/list.h>
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <net/dst.h>
#include <net/xfrm.h>
#include <net/mac80211.h>
#include <net/ieee80211_radiotap.h>
#include <linux/if_arp.h>
#include <linux/rtnetlink.h>
#include <linux/etherdevice.h>
#include <linux/platform_device.h>
#include <linux/debugfs.h>
#include <linux/module.h>
#include <linux/ktime.h>
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
#include <net/genetlink.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#include <linux/rhashtable.h>
#include <linux/nospec.h>
#include <linux/virtio.h>
#include <linux/virtio_ids.h>
#include <linux/virtio_config.h>
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
#include "mac80211_hwsim.h"
#define WARN_QUEUE 100
#define MAX_QUEUE 200
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211");
MODULE_LICENSE("GPL");
static int radios = 2;
module_param(radios, int, 0444);
MODULE_PARM_DESC(radios, "Number of simulated radios");
static int channels = 1;
module_param(channels, int, 0444);
MODULE_PARM_DESC(channels, "Number of concurrent channels");
static bool paged_rx = false;
module_param(paged_rx, bool, 0644);
MODULE_PARM_DESC(paged_rx, "Use paged SKBs for RX instead of linear ones");
static bool rctbl = false;
module_param(rctbl, bool, 0444);
MODULE_PARM_DESC(rctbl, "Handle rate control table");
static bool support_p2p_device = true;
module_param(support_p2p_device, bool, 0444);
MODULE_PARM_DESC(support_p2p_device, "Support P2P-Device interface type");
static bool mlo;
module_param(mlo, bool, 0444);
MODULE_PARM_DESC(mlo, "Support MLO");
/**
* enum hwsim_regtest - the type of regulatory tests we offer
*
* These are the different values you can use for the regtest
* module parameter. This is useful to help test world roaming
* and the driver regulatory_hint() call and combinations of these.
* If you want to do specific alpha2 regulatory domain tests simply
* use the userspace regulatory request as that will be respected as
* well without the need of this module parameter. This is designed
* only for testing the driver regulatory request, world roaming
* and all possible combinations.
*
* @HWSIM_REGTEST_DISABLED: No regulatory tests are performed,
* this is the default value.
* @HWSIM_REGTEST_DRIVER_REG_FOLLOW: Used for testing the driver regulatory
* hint, only one driver regulatory hint will be sent as such the
* secondary radios are expected to follow.
* @HWSIM_REGTEST_DRIVER_REG_ALL: Used for testing the driver regulatory
* request with all radios reporting the same regulatory domain.
* @HWSIM_REGTEST_DIFF_COUNTRY: Used for testing the drivers calling
* different regulatory domains requests. Expected behaviour is for
* an intersection to occur but each device will still use their
* respective regulatory requested domains. Subsequent radios will
* use the resulting intersection.
* @HWSIM_REGTEST_WORLD_ROAM: Used for testing the world roaming. We accomplish
* this by using a custom beacon-capable regulatory domain for the first
* radio. All other device world roam.
* @HWSIM_REGTEST_CUSTOM_WORLD: Used for testing the custom world regulatory
* domain requests. All radios will adhere to this custom world regulatory
* domain.
* @HWSIM_REGTEST_CUSTOM_WORLD_2: Used for testing 2 custom world regulatory
* domain requests. The first radio will adhere to the first custom world
* regulatory domain, the second one to the second custom world regulatory
* domain. All other devices will world roam.
* @HWSIM_REGTEST_STRICT_FOLLOW: Used for testing strict regulatory domain
* settings, only the first radio will send a regulatory domain request
* and use strict settings. The rest of the radios are expected to follow.
* @HWSIM_REGTEST_STRICT_ALL: Used for testing strict regulatory domain
* settings. All radios will adhere to this.
* @HWSIM_REGTEST_STRICT_AND_DRIVER_REG: Used for testing strict regulatory
* domain settings, combined with secondary driver regulatory domain
* settings. The first radio will get a strict regulatory domain setting
* using the first driver regulatory request and the second radio will use
* non-strict settings using the second driver regulatory request. All
* other devices should follow the intersection created between the
* first two.
* @HWSIM_REGTEST_ALL: Used for testing every possible mix. You will need
* at least 6 radios for a complete test. We will test in this order:
* 1 - driver custom world regulatory domain
* 2 - second custom world regulatory domain
* 3 - first driver regulatory domain request
* 4 - second driver regulatory domain request
* 5 - strict regulatory domain settings using the third driver regulatory
* domain request
* 6 and on - should follow the intersection of the 3rd, 4rth and 5th radio
* regulatory requests.
*/
enum hwsim_regtest {
HWSIM_REGTEST_DISABLED = 0,
HWSIM_REGTEST_DRIVER_REG_FOLLOW = 1,
HWSIM_REGTEST_DRIVER_REG_ALL = 2,
HWSIM_REGTEST_DIFF_COUNTRY = 3,
HWSIM_REGTEST_WORLD_ROAM = 4,
HWSIM_REGTEST_CUSTOM_WORLD = 5,
HWSIM_REGTEST_CUSTOM_WORLD_2 = 6,
HWSIM_REGTEST_STRICT_FOLLOW = 7,
HWSIM_REGTEST_STRICT_ALL = 8,
HWSIM_REGTEST_STRICT_AND_DRIVER_REG = 9,
HWSIM_REGTEST_ALL = 10,
};
/* Set to one of the HWSIM_REGTEST_* values above */
static int regtest = HWSIM_REGTEST_DISABLED;
module_param(regtest, int, 0444);
MODULE_PARM_DESC(regtest, "The type of regulatory test we want to run");
static const char *hwsim_alpha2s[] = {
"FI",
"AL",
"US",
"DE",
"JP",
"AL",
};
static const struct ieee80211_regdomain hwsim_world_regdom_custom_01 = {
.n_reg_rules = 5,
.alpha2 = "99",
.reg_rules = {
REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
REG_RULE(2484-10, 2484+10, 40, 0, 20, 0),
REG_RULE(5150-10, 5240+10, 40, 0, 30, 0),
REG_RULE(5745-10, 5825+10, 40, 0, 30, 0),
REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
}
};
static const struct ieee80211_regdomain hwsim_world_regdom_custom_02 = {
.n_reg_rules = 3,
.alpha2 = "99",
.reg_rules = {
REG_RULE(2412-10, 2462+10, 40, 0, 20, 0),
REG_RULE(5725-10, 5850+10, 40, 0, 30,
NL80211_RRF_NO_IR),
REG_RULE(5855-10, 5925+10, 40, 0, 33, 0),
}
};
static const struct ieee80211_regdomain hwsim_world_regdom_custom_03 = {
.n_reg_rules = 6,
.alpha2 = "99",
.reg_rules = {
REG_RULE(2412 - 10, 2462 + 10, 40, 0, 20, 0),
REG_RULE(2484 - 10, 2484 + 10, 40, 0, 20, 0),
REG_RULE(5150 - 10, 5240 + 10, 40, 0, 30, 0),
REG_RULE(5745 - 10, 5825 + 10, 40, 0, 30, 0),
REG_RULE(5855 - 10, 5925 + 10, 40, 0, 33, 0),
REG_RULE(5955 - 10, 7125 + 10, 320, 0, 33, 0),
}
};
static const struct ieee80211_regdomain *hwsim_world_regdom_custom[] = {
&hwsim_world_regdom_custom_01,
&hwsim_world_regdom_custom_02,
&hwsim_world_regdom_custom_03,
};
struct hwsim_vif_priv {
u32 magic;
u8 bssid[ETH_ALEN];
bool assoc;
bool bcn_en;
u16 aid;
};
#define HWSIM_VIF_MAGIC 0x69537748
static inline void hwsim_check_magic(struct ieee80211_vif *vif)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
WARN(vp->magic != HWSIM_VIF_MAGIC,
"Invalid VIF (%p) magic %#x, %pM, %d/%d\n",
vif, vp->magic, vif->addr, vif->type, vif->p2p);
}
static inline void hwsim_set_magic(struct ieee80211_vif *vif)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
vp->magic = HWSIM_VIF_MAGIC;
}
static inline void hwsim_clear_magic(struct ieee80211_vif *vif)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
vp->magic = 0;
}
struct hwsim_sta_priv {
u32 magic;
unsigned int last_link;
};
#define HWSIM_STA_MAGIC 0x6d537749
static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta)
{
struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
WARN_ON(sp->magic != HWSIM_STA_MAGIC);
}
static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta)
{
struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
sp->magic = HWSIM_STA_MAGIC;
}
static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta)
{
struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
sp->magic = 0;
}
struct hwsim_chanctx_priv {
u32 magic;
};
#define HWSIM_CHANCTX_MAGIC 0x6d53774a
static inline void hwsim_check_chanctx_magic(struct ieee80211_chanctx_conf *c)
{
struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
WARN_ON(cp->magic != HWSIM_CHANCTX_MAGIC);
}
static inline void hwsim_set_chanctx_magic(struct ieee80211_chanctx_conf *c)
{
struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
cp->magic = HWSIM_CHANCTX_MAGIC;
}
static inline void hwsim_clear_chanctx_magic(struct ieee80211_chanctx_conf *c)
{
struct hwsim_chanctx_priv *cp = (void *)c->drv_priv;
cp->magic = 0;
}
netns: make struct pernet_operations::id unsigned int Make struct pernet_operations::id unsigned. There are 2 reasons to do so: 1) This field is really an index into an zero based array and thus is unsigned entity. Using negative value is out-of-bound access by definition. 2) On x86_64 unsigned 32-bit data which are mixed with pointers via array indexing or offsets added or subtracted to pointers are preffered to signed 32-bit data. "int" being used as an array index needs to be sign-extended to 64-bit before being used. void f(long *p, int i) { g(p[i]); } roughly translates to movsx rsi, esi mov rdi, [rsi+...] call g MOVSX is 3 byte instruction which isn't necessary if the variable is unsigned because x86_64 is zero extending by default. Now, there is net_generic() function which, you guessed it right, uses "int" as an array index: static inline void *net_generic(const struct net *net, int id) { ... ptr = ng->ptr[id - 1]; ... } And this function is used a lot, so those sign extensions add up. Patch snipes ~1730 bytes on allyesconfig kernel (without all junk messing with code generation): add/remove: 0/0 grow/shrink: 70/598 up/down: 396/-2126 (-1730) Unfortunately some functions actually grow bigger. This is a semmingly random artefact of code generation with register allocator being used differently. gcc decides that some variable needs to live in new r8+ registers and every access now requires REX prefix. Or it is shifted into r12, so [r12+0] addressing mode has to be used which is longer than [r8] However, overall balance is in negative direction: add/remove: 0/0 grow/shrink: 70/598 up/down: 396/-2126 (-1730) function old new delta nfsd4_lock 3886 3959 +73 tipc_link_build_proto_msg 1096 1140 +44 mac80211_hwsim_new_radio 2776 2808 +32 tipc_mon_rcv 1032 1058 +26 svcauth_gss_legacy_init 1413 1429 +16 tipc_bcbase_select_primary 379 392 +13 nfsd4_exchange_id 1247 1260 +13 nfsd4_setclientid_confirm 782 793 +11 ... put_client_renew_locked 494 480 -14 ip_set_sockfn_get 730 716 -14 geneve_sock_add 829 813 -16 nfsd4_sequence_done 721 703 -18 nlmclnt_lookup_host 708 686 -22 nfsd4_lockt 1085 1063 -22 nfs_get_client 1077 1050 -27 tcf_bpf_init 1106 1076 -30 nfsd4_encode_fattr 5997 5930 -67 Total: Before=154856051, After=154854321, chg -0.00% Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-17 09:58:21 +08:00
static unsigned int hwsim_net_id;
static DEFINE_IDA(hwsim_netgroup_ida);
struct hwsim_net {
int netgroup;
u32 wmediumd;
};
static inline int hwsim_net_get_netgroup(struct net *net)
{
struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
return hwsim_net->netgroup;
}
static inline int hwsim_net_set_netgroup(struct net *net)
{
struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
hwsim_net->netgroup = ida_alloc(&hwsim_netgroup_ida, GFP_KERNEL);
return hwsim_net->netgroup >= 0 ? 0 : -ENOMEM;
}
static inline u32 hwsim_net_get_wmediumd(struct net *net)
{
struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
return hwsim_net->wmediumd;
}
static inline void hwsim_net_set_wmediumd(struct net *net, u32 portid)
{
struct hwsim_net *hwsim_net = net_generic(net, hwsim_net_id);
hwsim_net->wmediumd = portid;
}
static struct class *hwsim_class;
static struct net_device *hwsim_mon; /* global monitor netdev */
#define CHAN2G(_freq) { \
.band = NL80211_BAND_2GHZ, \
.center_freq = (_freq), \
.hw_value = (_freq), \
}
#define CHAN5G(_freq) { \
.band = NL80211_BAND_5GHZ, \
.center_freq = (_freq), \
.hw_value = (_freq), \
}
#define CHAN6G(_freq) { \
.band = NL80211_BAND_6GHZ, \
.center_freq = (_freq), \
.hw_value = (_freq), \
}
static const struct ieee80211_channel hwsim_channels_2ghz[] = {
CHAN2G(2412), /* Channel 1 */
CHAN2G(2417), /* Channel 2 */
CHAN2G(2422), /* Channel 3 */
CHAN2G(2427), /* Channel 4 */
CHAN2G(2432), /* Channel 5 */
CHAN2G(2437), /* Channel 6 */
CHAN2G(2442), /* Channel 7 */
CHAN2G(2447), /* Channel 8 */
CHAN2G(2452), /* Channel 9 */
CHAN2G(2457), /* Channel 10 */
CHAN2G(2462), /* Channel 11 */
CHAN2G(2467), /* Channel 12 */
CHAN2G(2472), /* Channel 13 */
CHAN2G(2484), /* Channel 14 */
};
static const struct ieee80211_channel hwsim_channels_5ghz[] = {
CHAN5G(5180), /* Channel 36 */
CHAN5G(5200), /* Channel 40 */
CHAN5G(5220), /* Channel 44 */
CHAN5G(5240), /* Channel 48 */
CHAN5G(5260), /* Channel 52 */
CHAN5G(5280), /* Channel 56 */
CHAN5G(5300), /* Channel 60 */
CHAN5G(5320), /* Channel 64 */
CHAN5G(5500), /* Channel 100 */
CHAN5G(5520), /* Channel 104 */
CHAN5G(5540), /* Channel 108 */
CHAN5G(5560), /* Channel 112 */
CHAN5G(5580), /* Channel 116 */
CHAN5G(5600), /* Channel 120 */
CHAN5G(5620), /* Channel 124 */
CHAN5G(5640), /* Channel 128 */
CHAN5G(5660), /* Channel 132 */
CHAN5G(5680), /* Channel 136 */
CHAN5G(5700), /* Channel 140 */
CHAN5G(5745), /* Channel 149 */
CHAN5G(5765), /* Channel 153 */
CHAN5G(5785), /* Channel 157 */
CHAN5G(5805), /* Channel 161 */
CHAN5G(5825), /* Channel 165 */
CHAN5G(5845), /* Channel 169 */
CHAN5G(5855), /* Channel 171 */
CHAN5G(5860), /* Channel 172 */
CHAN5G(5865), /* Channel 173 */
CHAN5G(5870), /* Channel 174 */
CHAN5G(5875), /* Channel 175 */
CHAN5G(5880), /* Channel 176 */
CHAN5G(5885), /* Channel 177 */
CHAN5G(5890), /* Channel 178 */
CHAN5G(5895), /* Channel 179 */
CHAN5G(5900), /* Channel 180 */
CHAN5G(5905), /* Channel 181 */
CHAN5G(5910), /* Channel 182 */
CHAN5G(5915), /* Channel 183 */
CHAN5G(5920), /* Channel 184 */
CHAN5G(5925), /* Channel 185 */
};
static const struct ieee80211_channel hwsim_channels_6ghz[] = {
CHAN6G(5955), /* Channel 1 */
CHAN6G(5975), /* Channel 5 */
CHAN6G(5995), /* Channel 9 */
CHAN6G(6015), /* Channel 13 */
CHAN6G(6035), /* Channel 17 */
CHAN6G(6055), /* Channel 21 */
CHAN6G(6075), /* Channel 25 */
CHAN6G(6095), /* Channel 29 */
CHAN6G(6115), /* Channel 33 */
CHAN6G(6135), /* Channel 37 */
CHAN6G(6155), /* Channel 41 */
CHAN6G(6175), /* Channel 45 */
CHAN6G(6195), /* Channel 49 */
CHAN6G(6215), /* Channel 53 */
CHAN6G(6235), /* Channel 57 */
CHAN6G(6255), /* Channel 61 */
CHAN6G(6275), /* Channel 65 */
CHAN6G(6295), /* Channel 69 */
CHAN6G(6315), /* Channel 73 */
CHAN6G(6335), /* Channel 77 */
CHAN6G(6355), /* Channel 81 */
CHAN6G(6375), /* Channel 85 */
CHAN6G(6395), /* Channel 89 */
CHAN6G(6415), /* Channel 93 */
CHAN6G(6435), /* Channel 97 */
CHAN6G(6455), /* Channel 181 */
CHAN6G(6475), /* Channel 105 */
CHAN6G(6495), /* Channel 109 */
CHAN6G(6515), /* Channel 113 */
CHAN6G(6535), /* Channel 117 */
CHAN6G(6555), /* Channel 121 */
CHAN6G(6575), /* Channel 125 */
CHAN6G(6595), /* Channel 129 */
CHAN6G(6615), /* Channel 133 */
CHAN6G(6635), /* Channel 137 */
CHAN6G(6655), /* Channel 141 */
CHAN6G(6675), /* Channel 145 */
CHAN6G(6695), /* Channel 149 */
CHAN6G(6715), /* Channel 153 */
CHAN6G(6735), /* Channel 157 */
CHAN6G(6755), /* Channel 161 */
CHAN6G(6775), /* Channel 165 */
CHAN6G(6795), /* Channel 169 */
CHAN6G(6815), /* Channel 173 */
CHAN6G(6835), /* Channel 177 */
CHAN6G(6855), /* Channel 181 */
CHAN6G(6875), /* Channel 185 */
CHAN6G(6895), /* Channel 189 */
CHAN6G(6915), /* Channel 193 */
CHAN6G(6935), /* Channel 197 */
CHAN6G(6955), /* Channel 201 */
CHAN6G(6975), /* Channel 205 */
CHAN6G(6995), /* Channel 209 */
CHAN6G(7015), /* Channel 213 */
CHAN6G(7035), /* Channel 217 */
CHAN6G(7055), /* Channel 221 */
CHAN6G(7075), /* Channel 225 */
CHAN6G(7095), /* Channel 229 */
CHAN6G(7115), /* Channel 233 */
};
#define NUM_S1G_CHANS_US 51
static struct ieee80211_channel hwsim_channels_s1g[NUM_S1G_CHANS_US];
static const struct ieee80211_sta_s1g_cap hwsim_s1g_cap = {
.s1g = true,
.cap = { S1G_CAP0_SGI_1MHZ | S1G_CAP0_SGI_2MHZ,
0,
0,
S1G_CAP3_MAX_MPDU_LEN,
0,
S1G_CAP5_AMPDU,
0,
S1G_CAP7_DUP_1MHZ,
S1G_CAP8_TWT_RESPOND | S1G_CAP8_TWT_REQUEST,
0},
.nss_mcs = { 0xfc | 1, /* MCS 7 for 1 SS */
/* RX Highest Supported Long GI Data Rate 0:7 */
0,
/* RX Highest Supported Long GI Data Rate 0:7 */
/* TX S1G MCS Map 0:6 */
0xfa,
/* TX S1G MCS Map :7 */
/* TX Highest Supported Long GI Data Rate 0:6 */
0x80,
/* TX Highest Supported Long GI Data Rate 7:8 */
/* Rx Single spatial stream and S1G-MCS Map for 1MHz */
/* Tx Single spatial stream and S1G-MCS Map for 1MHz */
0 },
};
static void hwsim_init_s1g_channels(struct ieee80211_channel *chans)
{
int ch, freq;
for (ch = 0; ch < NUM_S1G_CHANS_US; ch++) {
freq = 902000 + (ch + 1) * 500;
chans[ch].band = NL80211_BAND_S1GHZ;
chans[ch].center_freq = KHZ_TO_MHZ(freq);
chans[ch].freq_offset = freq % 1000;
chans[ch].hw_value = ch + 1;
}
}
static const struct ieee80211_rate hwsim_rates[] = {
{ .bitrate = 10 },
{ .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
{ .bitrate = 60 },
{ .bitrate = 90 },
{ .bitrate = 120 },
{ .bitrate = 180 },
{ .bitrate = 240 },
{ .bitrate = 360 },
{ .bitrate = 480 },
{ .bitrate = 540 }
};
#define DEFAULT_RX_RSSI -50
static const u32 hwsim_ciphers[] = {
WLAN_CIPHER_SUITE_WEP40,
WLAN_CIPHER_SUITE_WEP104,
WLAN_CIPHER_SUITE_TKIP,
WLAN_CIPHER_SUITE_CCMP,
WLAN_CIPHER_SUITE_CCMP_256,
WLAN_CIPHER_SUITE_GCMP,
WLAN_CIPHER_SUITE_GCMP_256,
WLAN_CIPHER_SUITE_AES_CMAC,
WLAN_CIPHER_SUITE_BIP_CMAC_256,
WLAN_CIPHER_SUITE_BIP_GMAC_128,
WLAN_CIPHER_SUITE_BIP_GMAC_256,
};
#define OUI_QCA 0x001374
#define QCA_NL80211_SUBCMD_TEST 1
enum qca_nl80211_vendor_subcmds {
QCA_WLAN_VENDOR_ATTR_TEST = 8,
QCA_WLAN_VENDOR_ATTR_MAX = QCA_WLAN_VENDOR_ATTR_TEST
};
static const struct nla_policy
hwsim_vendor_test_policy[QCA_WLAN_VENDOR_ATTR_MAX + 1] = {
[QCA_WLAN_VENDOR_ATTR_MAX] = { .type = NLA_U32 },
};
static int mac80211_hwsim_vendor_cmd_test(struct wiphy *wiphy,
struct wireless_dev *wdev,
const void *data, int data_len)
{
struct sk_buff *skb;
struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_MAX + 1];
int err;
u32 val;
netlink: make validation more configurable for future strictness We currently have two levels of strict validation: 1) liberal (default) - undefined (type >= max) & NLA_UNSPEC attributes accepted - attribute length >= expected accepted - garbage at end of message accepted 2) strict (opt-in) - NLA_UNSPEC attributes accepted - attribute length >= expected accepted Split out parsing strictness into four different options: * TRAILING - check that there's no trailing data after parsing attributes (in message or nested) * MAXTYPE - reject attrs > max known type * UNSPEC - reject attributes with NLA_UNSPEC policy entries * STRICT_ATTRS - strictly validate attribute size The default for future things should be *everything*. The current *_strict() is a combination of TRAILING and MAXTYPE, and is renamed to _deprecated_strict(). The current regular parsing has none of this, and is renamed to *_parse_deprecated(). Additionally it allows us to selectively set one of the new flags even on old policies. Notably, the UNSPEC flag could be useful in this case, since it can be arranged (by filling in the policy) to not be an incompatible userspace ABI change, but would then going forward prevent forgetting attribute entries. Similar can apply to the POLICY flag. We end up with the following renames: * nla_parse -> nla_parse_deprecated * nla_parse_strict -> nla_parse_deprecated_strict * nlmsg_parse -> nlmsg_parse_deprecated * nlmsg_parse_strict -> nlmsg_parse_deprecated_strict * nla_parse_nested -> nla_parse_nested_deprecated * nla_validate_nested -> nla_validate_nested_deprecated Using spatch, of course: @@ expression TB, MAX, HEAD, LEN, POL, EXT; @@ -nla_parse(TB, MAX, HEAD, LEN, POL, EXT) +nla_parse_deprecated(TB, MAX, HEAD, LEN, POL, EXT) @@ expression NLH, HDRLEN, TB, MAX, POL, EXT; @@ -nlmsg_parse(NLH, HDRLEN, TB, MAX, POL, EXT) +nlmsg_parse_deprecated(NLH, HDRLEN, TB, MAX, POL, EXT) @@ expression NLH, HDRLEN, TB, MAX, POL, EXT; @@ -nlmsg_parse_strict(NLH, HDRLEN, TB, MAX, POL, EXT) +nlmsg_parse_deprecated_strict(NLH, HDRLEN, TB, MAX, POL, EXT) @@ expression TB, MAX, NLA, POL, EXT; @@ -nla_parse_nested(TB, MAX, NLA, POL, EXT) +nla_parse_nested_deprecated(TB, MAX, NLA, POL, EXT) @@ expression START, MAX, POL, EXT; @@ -nla_validate_nested(START, MAX, POL, EXT) +nla_validate_nested_deprecated(START, MAX, POL, EXT) @@ expression NLH, HDRLEN, MAX, POL, EXT; @@ -nlmsg_validate(NLH, HDRLEN, MAX, POL, EXT) +nlmsg_validate_deprecated(NLH, HDRLEN, MAX, POL, EXT) For this patch, don't actually add the strict, non-renamed versions yet so that it breaks compile if I get it wrong. Also, while at it, make nla_validate and nla_parse go down to a common __nla_validate_parse() function to avoid code duplication. Ultimately, this allows us to have very strict validation for every new caller of nla_parse()/nlmsg_parse() etc as re-introduced in the next patch, while existing things will continue to work as is. In effect then, this adds fully strict validation for any new command. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26 20:07:28 +08:00
err = nla_parse_deprecated(tb, QCA_WLAN_VENDOR_ATTR_MAX, data,
data_len, hwsim_vendor_test_policy, NULL);
if (err)
return err;
if (!tb[QCA_WLAN_VENDOR_ATTR_TEST])
return -EINVAL;
val = nla_get_u32(tb[QCA_WLAN_VENDOR_ATTR_TEST]);
wiphy_dbg(wiphy, "%s: test=%u\n", __func__, val);
/* Send a vendor event as a test. Note that this would not normally be
* done within a command handler, but rather, based on some other
* trigger. For simplicity, this command is used to trigger the event
* here.
*
* event_idx = 0 (index in mac80211_hwsim_vendor_commands)
*/
skb = cfg80211_vendor_event_alloc(wiphy, wdev, 100, 0, GFP_KERNEL);
if (skb) {
/* skb_put() or nla_put() will fill up data within
* NL80211_ATTR_VENDOR_DATA.
*/
/* Add vendor data */
nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 1);
/* Send the event - this will call nla_nest_end() */
cfg80211_vendor_event(skb, GFP_KERNEL);
}
/* Send a response to the command */
skb = cfg80211_vendor_cmd_alloc_reply_skb(wiphy, 10);
if (!skb)
return -ENOMEM;
/* skb_put() or nla_put() will fill up data within
* NL80211_ATTR_VENDOR_DATA
*/
nla_put_u32(skb, QCA_WLAN_VENDOR_ATTR_TEST, val + 2);
return cfg80211_vendor_cmd_reply(skb);
}
static struct wiphy_vendor_command mac80211_hwsim_vendor_commands[] = {
{
.info = { .vendor_id = OUI_QCA,
.subcmd = QCA_NL80211_SUBCMD_TEST },
.flags = WIPHY_VENDOR_CMD_NEED_NETDEV,
.doit = mac80211_hwsim_vendor_cmd_test,
.policy = hwsim_vendor_test_policy,
.maxattr = QCA_WLAN_VENDOR_ATTR_MAX,
}
};
/* Advertise support vendor specific events */
static const struct nl80211_vendor_cmd_info mac80211_hwsim_vendor_events[] = {
{ .vendor_id = OUI_QCA, .subcmd = 1 },
};
static DEFINE_SPINLOCK(hwsim_radio_lock);
static LIST_HEAD(hwsim_radios);
static struct rhashtable hwsim_radios_rht;
static int hwsim_radio_idx;
static int hwsim_radios_generation = 1;
static struct platform_driver mac80211_hwsim_driver = {
.driver = {
.name = "mac80211_hwsim",
},
};
struct mac80211_hwsim_link_data {
u32 link_id;
u64 beacon_int /* beacon interval in us */;
struct hrtimer beacon_timer;
};
struct mac80211_hwsim_data {
struct list_head list;
struct rhash_head rht;
struct ieee80211_hw *hw;
struct device *dev;
struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
struct ieee80211_channel channels_6ghz[ARRAY_SIZE(hwsim_channels_6ghz)];
struct ieee80211_channel channels_s1g[ARRAY_SIZE(hwsim_channels_s1g)];
struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
struct ieee80211_iface_combination if_combination;
struct ieee80211_iface_limit if_limits[3];
int n_if_limits;
u32 ciphers[ARRAY_SIZE(hwsim_ciphers)];
struct mac_address addresses[2];
struct ieee80211_chanctx_conf *chanctx;
int channels, idx;
bool use_chanctx;
bool destroy_on_close;
u32 portid;
char alpha2[2];
const struct ieee80211_regdomain *regd;
struct ieee80211_channel *tmp_chan;
struct ieee80211_channel *roc_chan;
u32 roc_duration;
struct delayed_work roc_start;
struct delayed_work roc_done;
struct delayed_work hw_scan;
struct cfg80211_scan_request *hw_scan_request;
struct ieee80211_vif *hw_scan_vif;
int scan_chan_idx;
u8 scan_addr[ETH_ALEN];
struct {
struct ieee80211_channel *channel;
unsigned long next_start, start, end;
} survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
ARRAY_SIZE(hwsim_channels_5ghz) +
ARRAY_SIZE(hwsim_channels_6ghz)];
struct ieee80211_channel *channel;
enum nl80211_chan_width bw;
unsigned int rx_filter;
bool started, idle, scanning;
struct mutex mutex;
enum ps_mode {
PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL
} ps;
bool ps_poll_pending;
struct dentry *debugfs;
atomic_t pending_cookie;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
struct sk_buff_head pending; /* packets pending */
/*
* Only radios in the same group can communicate together (the
* channel has to match too). Each bit represents a group. A
* radio can be in more than one group.
*/
u64 group;
/* group shared by radios created in the same netns */
int netgroup;
/* wmediumd portid responsible for netgroup of this radio */
u32 wmediumd;
/* difference between this hw's clock and the real clock, in usecs */
s64 tsf_offset;
s64 bcn_delta;
/* absolute beacon transmission time. Used to cover up "tx" delay. */
u64 abs_bcn_ts;
/* Stats */
u64 tx_pkts;
u64 rx_pkts;
u64 tx_bytes;
u64 rx_bytes;
u64 tx_dropped;
u64 tx_failed;
/* RSSI in rx status of the receiver */
int rx_rssi;
struct mac80211_hwsim_link_data link_data[IEEE80211_MLD_MAX_NUM_LINKS];
};
static const struct rhashtable_params hwsim_rht_params = {
.nelem_hint = 2,
.automatic_shrinking = true,
.key_len = ETH_ALEN,
.key_offset = offsetof(struct mac80211_hwsim_data, addresses[1]),
.head_offset = offsetof(struct mac80211_hwsim_data, rht),
};
struct hwsim_radiotap_hdr {
struct ieee80211_radiotap_header hdr;
__le64 rt_tsft;
u8 rt_flags;
u8 rt_rate;
__le16 rt_channel;
__le16 rt_chbitmask;
} __packed;
struct hwsim_radiotap_ack_hdr {
struct ieee80211_radiotap_header hdr;
u8 rt_flags;
u8 pad;
__le16 rt_channel;
__le16 rt_chbitmask;
} __packed;
/* MAC80211_HWSIM netlink family */
static struct genl_family hwsim_genl_family;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
enum hwsim_multicast_groups {
HWSIM_MCGRP_CONFIG,
};
static const struct genl_multicast_group hwsim_mcgrps[] = {
[HWSIM_MCGRP_CONFIG] = { .name = "config", },
};
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* MAC80211_HWSIM netlink policy */
static const struct nla_policy hwsim_genl_policy[HWSIM_ATTR_MAX + 1] = {
[HWSIM_ATTR_ADDR_RECEIVER] = NLA_POLICY_ETH_ADDR_COMPAT,
[HWSIM_ATTR_ADDR_TRANSMITTER] = NLA_POLICY_ETH_ADDR_COMPAT,
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
[HWSIM_ATTR_FRAME] = { .type = NLA_BINARY,
.len = IEEE80211_MAX_DATA_LEN },
[HWSIM_ATTR_FLAGS] = { .type = NLA_U32 },
[HWSIM_ATTR_RX_RATE] = { .type = NLA_U32 },
[HWSIM_ATTR_SIGNAL] = { .type = NLA_U32 },
[HWSIM_ATTR_TX_INFO] = { .type = NLA_BINARY,
.len = IEEE80211_TX_MAX_RATES *
sizeof(struct hwsim_tx_rate)},
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
[HWSIM_ATTR_COOKIE] = { .type = NLA_U64 },
[HWSIM_ATTR_CHANNELS] = { .type = NLA_U32 },
[HWSIM_ATTR_RADIO_ID] = { .type = NLA_U32 },
[HWSIM_ATTR_REG_HINT_ALPHA2] = { .type = NLA_STRING, .len = 2 },
[HWSIM_ATTR_REG_CUSTOM_REG] = { .type = NLA_U32 },
[HWSIM_ATTR_REG_STRICT_REG] = { .type = NLA_FLAG },
[HWSIM_ATTR_SUPPORT_P2P_DEVICE] = { .type = NLA_FLAG },
[HWSIM_ATTR_USE_CHANCTX] = { .type = NLA_FLAG },
[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE] = { .type = NLA_FLAG },
[HWSIM_ATTR_RADIO_NAME] = { .type = NLA_STRING },
[HWSIM_ATTR_NO_VIF] = { .type = NLA_FLAG },
[HWSIM_ATTR_FREQ] = { .type = NLA_U32 },
[HWSIM_ATTR_TX_INFO_FLAGS] = { .type = NLA_BINARY },
[HWSIM_ATTR_PERM_ADDR] = NLA_POLICY_ETH_ADDR_COMPAT,
[HWSIM_ATTR_IFTYPE_SUPPORT] = { .type = NLA_U32 },
[HWSIM_ATTR_CIPHER_SUPPORT] = { .type = NLA_BINARY },
[HWSIM_ATTR_MLO_SUPPORT] = { .type = NLA_FLAG },
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
};
#if IS_REACHABLE(CONFIG_VIRTIO)
/* MAC80211_HWSIM virtio queues */
static struct virtqueue *hwsim_vqs[HWSIM_NUM_VQS];
static bool hwsim_virtio_enabled;
static DEFINE_SPINLOCK(hwsim_virtio_lock);
static void hwsim_virtio_rx_work(struct work_struct *work);
static DECLARE_WORK(hwsim_virtio_rx, hwsim_virtio_rx_work);
static int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
struct sk_buff *skb)
{
struct scatterlist sg[1];
unsigned long flags;
int err;
spin_lock_irqsave(&hwsim_virtio_lock, flags);
if (!hwsim_virtio_enabled) {
err = -ENODEV;
goto out_free;
}
sg_init_one(sg, skb->head, skb_end_offset(skb));
err = virtqueue_add_outbuf(hwsim_vqs[HWSIM_VQ_TX], sg, 1, skb,
GFP_ATOMIC);
if (err)
goto out_free;
virtqueue_kick(hwsim_vqs[HWSIM_VQ_TX]);
spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
return 0;
out_free:
spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
nlmsg_free(skb);
return err;
}
#else
/* cause a linker error if this ends up being needed */
extern int hwsim_tx_virtio(struct mac80211_hwsim_data *data,
struct sk_buff *skb);
#define hwsim_virtio_enabled false
#endif
static int hwsim_get_chanwidth(enum nl80211_chan_width bw)
{
switch (bw) {
case NL80211_CHAN_WIDTH_20_NOHT:
case NL80211_CHAN_WIDTH_20:
return 20;
case NL80211_CHAN_WIDTH_40:
return 40;
case NL80211_CHAN_WIDTH_80:
return 80;
case NL80211_CHAN_WIDTH_80P80:
case NL80211_CHAN_WIDTH_160:
return 160;
case NL80211_CHAN_WIDTH_320:
return 320;
case NL80211_CHAN_WIDTH_5:
return 5;
case NL80211_CHAN_WIDTH_10:
return 10;
case NL80211_CHAN_WIDTH_1:
return 1;
case NL80211_CHAN_WIDTH_2:
return 2;
case NL80211_CHAN_WIDTH_4:
return 4;
case NL80211_CHAN_WIDTH_8:
return 8;
case NL80211_CHAN_WIDTH_16:
return 16;
}
return INT_MAX;
}
static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct ieee80211_channel *chan);
/* sysfs attributes */
static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif)
{
struct mac80211_hwsim_data *data = dat;
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
struct sk_buff *skb;
struct ieee80211_pspoll *pspoll;
if (!vp->assoc)
return;
wiphy_dbg(data->hw->wiphy,
"%s: send PS-Poll to %pM for aid %d\n",
__func__, vp->bssid, vp->aid);
skb = dev_alloc_skb(sizeof(*pspoll));
if (!skb)
return;
pspoll = skb_put(skb, sizeof(*pspoll));
pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_PSPOLL |
IEEE80211_FCTL_PM);
pspoll->aid = cpu_to_le16(0xc000 | vp->aid);
memcpy(pspoll->bssid, vp->bssid, ETH_ALEN);
memcpy(pspoll->ta, mac, ETH_ALEN);
rcu_read_lock();
mac80211_hwsim_tx_frame(data->hw, skb,
rcu_dereference(vif->bss_conf.chanctx_conf)->def.chan);
rcu_read_unlock();
}
static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac,
struct ieee80211_vif *vif, int ps)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
struct sk_buff *skb;
struct ieee80211_hdr *hdr;
if (!vp->assoc)
return;
wiphy_dbg(data->hw->wiphy,
"%s: send data::nullfunc to %pM ps=%d\n",
__func__, vp->bssid, ps);
skb = dev_alloc_skb(sizeof(*hdr));
if (!skb)
return;
hdr = skb_put(skb, sizeof(*hdr) - ETH_ALEN);
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
IEEE80211_STYPE_NULLFUNC |
IEEE80211_FCTL_TODS |
(ps ? IEEE80211_FCTL_PM : 0));
hdr->duration_id = cpu_to_le16(0);
memcpy(hdr->addr1, vp->bssid, ETH_ALEN);
memcpy(hdr->addr2, mac, ETH_ALEN);
memcpy(hdr->addr3, vp->bssid, ETH_ALEN);
rcu_read_lock();
mac80211_hwsim_tx_frame(data->hw, skb,
rcu_dereference(vif->bss_conf.chanctx_conf)->def.chan);
rcu_read_unlock();
}
static void hwsim_send_nullfunc_ps(void *dat, u8 *mac,
struct ieee80211_vif *vif)
{
struct mac80211_hwsim_data *data = dat;
hwsim_send_nullfunc(data, mac, vif, 1);
}
static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac,
struct ieee80211_vif *vif)
{
struct mac80211_hwsim_data *data = dat;
hwsim_send_nullfunc(data, mac, vif, 0);
}
static int hwsim_fops_ps_read(void *dat, u64 *val)
{
struct mac80211_hwsim_data *data = dat;
*val = data->ps;
return 0;
}
static int hwsim_fops_ps_write(void *dat, u64 val)
{
struct mac80211_hwsim_data *data = dat;
enum ps_mode old_ps;
if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL &&
val != PS_MANUAL_POLL)
return -EINVAL;
if (val == PS_MANUAL_POLL) {
if (data->ps != PS_ENABLED)
return -EINVAL;
local_bh_disable();
ieee80211_iterate_active_interfaces_atomic(
data->hw, IEEE80211_IFACE_ITER_NORMAL,
hwsim_send_ps_poll, data);
local_bh_enable();
return 0;
}
old_ps = data->ps;
data->ps = val;
local_bh_disable();
if (old_ps == PS_DISABLED && val != PS_DISABLED) {
ieee80211_iterate_active_interfaces_atomic(
data->hw, IEEE80211_IFACE_ITER_NORMAL,
hwsim_send_nullfunc_ps, data);
} else if (old_ps != PS_DISABLED && val == PS_DISABLED) {
ieee80211_iterate_active_interfaces_atomic(
data->hw, IEEE80211_IFACE_ITER_NORMAL,
hwsim_send_nullfunc_no_ps, data);
}
local_bh_enable();
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write,
"%llu\n");
static int hwsim_write_simulate_radar(void *dat, u64 val)
{
struct mac80211_hwsim_data *data = dat;
ieee80211_radar_detected(data->hw);
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(hwsim_simulate_radar, NULL,
hwsim_write_simulate_radar, "%llu\n");
static int hwsim_fops_group_read(void *dat, u64 *val)
{
struct mac80211_hwsim_data *data = dat;
*val = data->group;
return 0;
}
static int hwsim_fops_group_write(void *dat, u64 val)
{
struct mac80211_hwsim_data *data = dat;
data->group = val;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_group,
hwsim_fops_group_read, hwsim_fops_group_write,
"%llx\n");
static int hwsim_fops_rx_rssi_read(void *dat, u64 *val)
{
struct mac80211_hwsim_data *data = dat;
*val = data->rx_rssi;
return 0;
}
static int hwsim_fops_rx_rssi_write(void *dat, u64 val)
{
struct mac80211_hwsim_data *data = dat;
int rssi = (int)val;
if (rssi >= 0 || rssi < -100)
return -EINVAL;
data->rx_rssi = rssi;
return 0;
}
DEFINE_DEBUGFS_ATTRIBUTE(hwsim_fops_rx_rssi,
hwsim_fops_rx_rssi_read, hwsim_fops_rx_rssi_write,
"%lld\n");
static netdev_tx_t hwsim_mon_xmit(struct sk_buff *skb,
struct net_device *dev)
{
/* TODO: allow packet injection */
dev_kfree_skb(skb);
return NETDEV_TX_OK;
}
static inline u64 mac80211_hwsim_get_tsf_raw(void)
{
return ktime_to_us(ktime_get_real());
}
static __le64 __mac80211_hwsim_get_tsf(struct mac80211_hwsim_data *data)
{
u64 now = mac80211_hwsim_get_tsf_raw();
return cpu_to_le64(now + data->tsf_offset);
}
static u64 mac80211_hwsim_get_tsf(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mac80211_hwsim_data *data = hw->priv;
return le64_to_cpu(__mac80211_hwsim_get_tsf(data));
}
static void mac80211_hwsim_set_tsf(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, u64 tsf)
{
struct mac80211_hwsim_data *data = hw->priv;
u64 now = mac80211_hwsim_get_tsf(hw, vif);
/* MLD not supported here */
u32 bcn_int = data->link_data[0].beacon_int;
u64 delta = abs(tsf - now);
/* adjust after beaconing with new timestamp at old TBTT */
if (tsf > now) {
data->tsf_offset += delta;
data->bcn_delta = do_div(delta, bcn_int);
} else {
data->tsf_offset -= delta;
data->bcn_delta = -(s64)do_div(delta, bcn_int);
}
}
static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw,
struct sk_buff *tx_skb,
struct ieee80211_channel *chan)
{
struct mac80211_hwsim_data *data = hw->priv;
struct sk_buff *skb;
struct hwsim_radiotap_hdr *hdr;
u16 flags, bitrate;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb);
struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info);
if (!txrate)
bitrate = 0;
else
bitrate = txrate->bitrate;
if (!netif_running(hwsim_mon))
return;
skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC);
if (skb == NULL)
return;
hdr = skb_push(skb, sizeof(*hdr));
hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
hdr->hdr.it_pad = 0;
hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
(1 << IEEE80211_RADIOTAP_RATE) |
(1 << IEEE80211_RADIOTAP_TSFT) |
(1 << IEEE80211_RADIOTAP_CHANNEL));
hdr->rt_tsft = __mac80211_hwsim_get_tsf(data);
hdr->rt_flags = 0;
hdr->rt_rate = bitrate / 5;
hdr->rt_channel = cpu_to_le16(chan->center_freq);
flags = IEEE80211_CHAN_2GHZ;
if (txrate && txrate->flags & IEEE80211_RATE_ERP_G)
flags |= IEEE80211_CHAN_OFDM;
else
flags |= IEEE80211_CHAN_CCK;
hdr->rt_chbitmask = cpu_to_le16(flags);
skb->dev = hwsim_mon;
skb_reset_mac_header(skb);
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb->pkt_type = PACKET_OTHERHOST;
skb->protocol = htons(ETH_P_802_2);
memset(skb->cb, 0, sizeof(skb->cb));
netif_rx(skb);
}
static void mac80211_hwsim_monitor_ack(struct ieee80211_channel *chan,
const u8 *addr)
{
struct sk_buff *skb;
struct hwsim_radiotap_ack_hdr *hdr;
u16 flags;
struct ieee80211_hdr *hdr11;
if (!netif_running(hwsim_mon))
return;
skb = dev_alloc_skb(100);
if (skb == NULL)
return;
hdr = skb_put(skb, sizeof(*hdr));
hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION;
hdr->hdr.it_pad = 0;
hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr));
hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
(1 << IEEE80211_RADIOTAP_CHANNEL));
hdr->rt_flags = 0;
hdr->pad = 0;
hdr->rt_channel = cpu_to_le16(chan->center_freq);
flags = IEEE80211_CHAN_2GHZ;
hdr->rt_chbitmask = cpu_to_le16(flags);
hdr11 = skb_put(skb, 10);
hdr11->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL |
IEEE80211_STYPE_ACK);
hdr11->duration_id = cpu_to_le16(0);
memcpy(hdr11->addr1, addr, ETH_ALEN);
skb->dev = hwsim_mon;
skb_reset_mac_header(skb);
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb->pkt_type = PACKET_OTHERHOST;
skb->protocol = htons(ETH_P_802_2);
memset(skb->cb, 0, sizeof(skb->cb));
netif_rx(skb);
}
struct mac80211_hwsim_addr_match_data {
u8 addr[ETH_ALEN];
bool ret;
};
static void mac80211_hwsim_addr_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
int i;
struct mac80211_hwsim_addr_match_data *md = data;
if (memcmp(mac, md->addr, ETH_ALEN) == 0) {
md->ret = true;
return;
}
/* Match the link address */
for (i = 0; i < ARRAY_SIZE(vif->link_conf); i++) {
struct ieee80211_bss_conf *conf;
conf = rcu_dereference(vif->link_conf[i]);
if (!conf)
continue;
if (memcmp(conf->addr, md->addr, ETH_ALEN) == 0) {
md->ret = true;
return;
}
}
}
static bool mac80211_hwsim_addr_match(struct mac80211_hwsim_data *data,
const u8 *addr)
{
struct mac80211_hwsim_addr_match_data md = {
.ret = false,
};
if (data->scanning && memcmp(addr, data->scan_addr, ETH_ALEN) == 0)
return true;
memcpy(md.addr, addr, ETH_ALEN);
ieee80211_iterate_active_interfaces_atomic(data->hw,
IEEE80211_IFACE_ITER_NORMAL,
mac80211_hwsim_addr_iter,
&md);
return md.ret;
}
static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data,
struct sk_buff *skb)
{
switch (data->ps) {
case PS_DISABLED:
return true;
case PS_ENABLED:
return false;
case PS_AUTO_POLL:
/* TODO: accept (some) Beacons by default and other frames only
* if pending PS-Poll has been sent */
return true;
case PS_MANUAL_POLL:
/* Allow unicast frames to own address if there is a pending
* PS-Poll */
if (data->ps_poll_pending &&
mac80211_hwsim_addr_match(data, skb->data + 4)) {
data->ps_poll_pending = false;
return true;
}
return false;
}
return true;
}
static int hwsim_unicast_netgroup(struct mac80211_hwsim_data *data,
struct sk_buff *skb, int portid)
{
struct net *net;
bool found = false;
int res = -ENOENT;
rcu_read_lock();
for_each_net_rcu(net) {
if (data->netgroup == hwsim_net_get_netgroup(net)) {
res = genlmsg_unicast(net, skb, portid);
found = true;
break;
}
}
rcu_read_unlock();
if (!found)
nlmsg_free(skb);
return res;
}
static void mac80211_hwsim_config_mac_nl(struct ieee80211_hw *hw,
const u8 *addr, bool add)
{
struct mac80211_hwsim_data *data = hw->priv;
u32 _portid = READ_ONCE(data->wmediumd);
struct sk_buff *skb;
void *msg_head;
if (!_portid && !hwsim_virtio_enabled)
return;
skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
if (!skb)
return;
msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
add ? HWSIM_CMD_ADD_MAC_ADDR :
HWSIM_CMD_DEL_MAC_ADDR);
if (!msg_head) {
pr_debug("mac80211_hwsim: problem with msg_head\n");
goto nla_put_failure;
}
if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
ETH_ALEN, data->addresses[1].addr))
goto nla_put_failure;
if (nla_put(skb, HWSIM_ATTR_ADDR_RECEIVER, ETH_ALEN, addr))
goto nla_put_failure;
genlmsg_end(skb, msg_head);
if (hwsim_virtio_enabled)
hwsim_tx_virtio(data, skb);
else
hwsim_unicast_netgroup(data, skb, _portid);
return;
nla_put_failure:
nlmsg_free(skb);
}
static inline u16 trans_tx_rate_flags_ieee2hwsim(struct ieee80211_tx_rate *rate)
{
u16 result = 0;
if (rate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
result |= MAC80211_HWSIM_TX_RC_USE_RTS_CTS;
if (rate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
result |= MAC80211_HWSIM_TX_RC_USE_CTS_PROTECT;
if (rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
result |= MAC80211_HWSIM_TX_RC_USE_SHORT_PREAMBLE;
if (rate->flags & IEEE80211_TX_RC_MCS)
result |= MAC80211_HWSIM_TX_RC_MCS;
if (rate->flags & IEEE80211_TX_RC_GREEN_FIELD)
result |= MAC80211_HWSIM_TX_RC_GREEN_FIELD;
if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
result |= MAC80211_HWSIM_TX_RC_40_MHZ_WIDTH;
if (rate->flags & IEEE80211_TX_RC_DUP_DATA)
result |= MAC80211_HWSIM_TX_RC_DUP_DATA;
if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
result |= MAC80211_HWSIM_TX_RC_SHORT_GI;
if (rate->flags & IEEE80211_TX_RC_VHT_MCS)
result |= MAC80211_HWSIM_TX_RC_VHT_MCS;
if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
result |= MAC80211_HWSIM_TX_RC_80_MHZ_WIDTH;
if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
result |= MAC80211_HWSIM_TX_RC_160_MHZ_WIDTH;
return result;
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
static void mac80211_hwsim_tx_frame_nl(struct ieee80211_hw *hw,
struct sk_buff *my_skb,
int dst_portid,
struct ieee80211_channel *channel)
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
{
struct sk_buff *skb;
struct mac80211_hwsim_data *data = hw->priv;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) my_skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(my_skb);
void *msg_head;
unsigned int hwsim_flags = 0;
int i;
struct hwsim_tx_rate tx_attempts[IEEE80211_TX_MAX_RATES];
struct hwsim_tx_rate_flag tx_attempts_flags[IEEE80211_TX_MAX_RATES];
uintptr_t cookie;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
if (data->ps != PS_DISABLED)
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
/* If the queue contains MAX_QUEUE skb's drop some */
if (skb_queue_len(&data->pending) >= MAX_QUEUE) {
/* Dropping until WARN_QUEUE level */
while (skb_queue_len(&data->pending) >= WARN_QUEUE) {
ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
data->tx_dropped++;
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
}
skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_ATOMIC);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
if (skb == NULL)
goto nla_put_failure;
msg_head = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
HWSIM_CMD_FRAME);
if (msg_head == NULL) {
pr_debug("mac80211_hwsim: problem with msg_head\n");
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
goto nla_put_failure;
}
if (nla_put(skb, HWSIM_ATTR_ADDR_TRANSMITTER,
ETH_ALEN, data->addresses[1].addr))
goto nla_put_failure;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* We get the skb->data */
if (nla_put(skb, HWSIM_ATTR_FRAME, my_skb->len, my_skb->data))
goto nla_put_failure;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* We get the flags for this transmission, and we translate them to
wmediumd flags */
if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
hwsim_flags |= HWSIM_TX_CTL_REQ_TX_STATUS;
if (info->flags & IEEE80211_TX_CTL_NO_ACK)
hwsim_flags |= HWSIM_TX_CTL_NO_ACK;
if (nla_put_u32(skb, HWSIM_ATTR_FLAGS, hwsim_flags))
goto nla_put_failure;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
if (nla_put_u32(skb, HWSIM_ATTR_FREQ, channel->center_freq))
goto nla_put_failure;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* We get the tx control (rate and retries) info*/
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
tx_attempts[i].idx = info->status.rates[i].idx;
tx_attempts_flags[i].idx = info->status.rates[i].idx;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
tx_attempts[i].count = info->status.rates[i].count;
tx_attempts_flags[i].flags =
trans_tx_rate_flags_ieee2hwsim(
&info->status.rates[i]);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
}
if (nla_put(skb, HWSIM_ATTR_TX_INFO,
sizeof(struct hwsim_tx_rate)*IEEE80211_TX_MAX_RATES,
tx_attempts))
goto nla_put_failure;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
if (nla_put(skb, HWSIM_ATTR_TX_INFO_FLAGS,
sizeof(struct hwsim_tx_rate_flag) * IEEE80211_TX_MAX_RATES,
tx_attempts_flags))
goto nla_put_failure;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* We create a cookie to identify this skb */
cookie = atomic_inc_return(&data->pending_cookie);
info->rate_driver_data[0] = (void *)cookie;
if (nla_put_u64_64bit(skb, HWSIM_ATTR_COOKIE, cookie, HWSIM_ATTR_PAD))
goto nla_put_failure;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
genlmsg_end(skb, msg_head);
if (hwsim_virtio_enabled) {
if (hwsim_tx_virtio(data, skb))
goto err_free_txskb;
} else {
if (hwsim_unicast_netgroup(data, skb, dst_portid))
goto err_free_txskb;
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* Enqueue the packet */
skb_queue_tail(&data->pending, my_skb);
data->tx_pkts++;
data->tx_bytes += my_skb->len;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
return;
nla_put_failure:
nlmsg_free(skb);
err_free_txskb:
pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
ieee80211_free_txskb(hw, my_skb);
data->tx_failed++;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
}
static bool hwsim_chans_compat(struct ieee80211_channel *c1,
struct ieee80211_channel *c2)
{
if (!c1 || !c2)
return false;
return c1->center_freq == c2->center_freq;
}
struct tx_iter_data {
struct ieee80211_channel *channel;
bool receive;
};
static void mac80211_hwsim_tx_iter(void *_data, u8 *addr,
struct ieee80211_vif *vif)
{
struct tx_iter_data *data = _data;
int i;
for (i = 0; i < ARRAY_SIZE(vif->link_conf); i++) {
struct ieee80211_bss_conf *conf;
struct ieee80211_chanctx_conf *chanctx;
conf = rcu_dereference(vif->link_conf[i]);
if (!conf)
continue;
chanctx = rcu_dereference(conf->chanctx_conf);
if (!chanctx)
continue;
if (!hwsim_chans_compat(data->channel, chanctx->def.chan))
continue;
data->receive = true;
return;
}
}
static void mac80211_hwsim_add_vendor_rtap(struct sk_buff *skb)
{
/*
* To enable this code, #define the HWSIM_RADIOTAP_OUI,
* e.g. like this:
* #define HWSIM_RADIOTAP_OUI "\x02\x00\x00"
* (but you should use a valid OUI, not that)
*
* If anyone wants to 'donate' a radiotap OUI/subns code
* please send a patch removing this #ifdef and changing
* the values accordingly.
*/
#ifdef HWSIM_RADIOTAP_OUI
struct ieee80211_vendor_radiotap *rtap;
/*
* Note that this code requires the headroom in the SKB
* that was allocated earlier.
*/
rtap = skb_push(skb, sizeof(*rtap) + 8 + 4);
rtap->oui[0] = HWSIM_RADIOTAP_OUI[0];
rtap->oui[1] = HWSIM_RADIOTAP_OUI[1];
rtap->oui[2] = HWSIM_RADIOTAP_OUI[2];
rtap->subns = 127;
/*
* Radiotap vendor namespaces can (and should) also be
* split into fields by using the standard radiotap
* presence bitmap mechanism. Use just BIT(0) here for
* the presence bitmap.
*/
rtap->present = BIT(0);
/* We have 8 bytes of (dummy) data */
rtap->len = 8;
/* For testing, also require it to be aligned */
rtap->align = 8;
/* And also test that padding works, 4 bytes */
rtap->pad = 4;
/* push the data */
memcpy(rtap->data, "ABCDEFGH", 8);
/* make sure to clear padding, mac80211 doesn't */
memset(rtap->data + 8, 0, 4);
IEEE80211_SKB_RXCB(skb)->flag |= RX_FLAG_RADIOTAP_VENDOR_DATA;
#endif
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
static bool mac80211_hwsim_tx_frame_no_nl(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct ieee80211_channel *chan)
{
struct mac80211_hwsim_data *data = hw->priv, *data2;
bool ack = false;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_rx_status rx_status;
u64 now;
memset(&rx_status, 0, sizeof(rx_status));
rx_status.flag |= RX_FLAG_MACTIME_START;
rx_status.freq = chan->center_freq;
rx_status.freq_offset = chan->freq_offset ? 1 : 0;
rx_status.band = chan->band;
if (info->control.rates[0].flags & IEEE80211_TX_RC_VHT_MCS) {
rx_status.rate_idx =
ieee80211_rate_get_vht_mcs(&info->control.rates[0]);
rx_status.nss =
ieee80211_rate_get_vht_nss(&info->control.rates[0]);
mac80211: separate encoding/bandwidth from flags We currently use a lot of flags that are mutually incompatible, separate this out into actual encoding and bandwidth enum values. Much of this again done with spatch, with manual post-editing, mostly to add the switch statements and get rid of the conversions. @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_80MHZ +status->bw = RATE_INFO_BW_80 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_40MHZ +status->bw = RATE_INFO_BW_40 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_20MHZ +status->bw = RATE_INFO_BW_20 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_160MHZ +status->bw = RATE_INFO_BW_160 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_5MHZ +status->bw = RATE_INFO_BW_5 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_10MHZ +status->bw = RATE_INFO_BW_10 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_VHT +status->encoding = RX_ENC_VHT @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_HT +status->encoding = RX_ENC_HT @@ expression status; @@ -status.enc_flags |= RX_ENC_FLAG_VHT +status.encoding = RX_ENC_VHT @@ expression status; @@ -status.enc_flags |= RX_ENC_FLAG_HT +status.encoding = RX_ENC_HT @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_HT) +(status->encoding == RX_ENC_HT) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_VHT) +(status->encoding == RX_ENC_VHT) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_5MHZ) +(status->bw == RATE_INFO_BW_5) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_10MHZ) +(status->bw == RATE_INFO_BW_10) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_40MHZ) +(status->bw == RATE_INFO_BW_40) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_80MHZ) +(status->bw == RATE_INFO_BW_80) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_160MHZ) +(status->bw == RATE_INFO_BW_160) Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-04-26 18:14:59 +08:00
rx_status.encoding = RX_ENC_VHT;
} else {
rx_status.rate_idx = info->control.rates[0].idx;
if (info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
mac80211: separate encoding/bandwidth from flags We currently use a lot of flags that are mutually incompatible, separate this out into actual encoding and bandwidth enum values. Much of this again done with spatch, with manual post-editing, mostly to add the switch statements and get rid of the conversions. @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_80MHZ +status->bw = RATE_INFO_BW_80 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_40MHZ +status->bw = RATE_INFO_BW_40 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_20MHZ +status->bw = RATE_INFO_BW_20 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_160MHZ +status->bw = RATE_INFO_BW_160 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_5MHZ +status->bw = RATE_INFO_BW_5 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_10MHZ +status->bw = RATE_INFO_BW_10 @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_VHT +status->encoding = RX_ENC_VHT @@ expression status; @@ -status->enc_flags |= RX_ENC_FLAG_HT +status->encoding = RX_ENC_HT @@ expression status; @@ -status.enc_flags |= RX_ENC_FLAG_VHT +status.encoding = RX_ENC_VHT @@ expression status; @@ -status.enc_flags |= RX_ENC_FLAG_HT +status.encoding = RX_ENC_HT @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_HT) +(status->encoding == RX_ENC_HT) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_VHT) +(status->encoding == RX_ENC_VHT) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_5MHZ) +(status->bw == RATE_INFO_BW_5) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_10MHZ) +(status->bw == RATE_INFO_BW_10) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_40MHZ) +(status->bw == RATE_INFO_BW_40) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_80MHZ) +(status->bw == RATE_INFO_BW_80) @@ expression status; @@ -(status->enc_flags & RX_ENC_FLAG_160MHZ) +(status->bw == RATE_INFO_BW_160) Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-04-26 18:14:59 +08:00
rx_status.encoding = RX_ENC_HT;
}
if (info->control.rates[0].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
rx_status.bw = RATE_INFO_BW_40;
else if (info->control.rates[0].flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
rx_status.bw = RATE_INFO_BW_80;
else if (info->control.rates[0].flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
rx_status.bw = RATE_INFO_BW_160;
else
rx_status.bw = RATE_INFO_BW_20;
if (info->control.rates[0].flags & IEEE80211_TX_RC_SHORT_GI)
mac80211: clean up rate encoding bits in RX status In preparation for adding support for HE rates, clean up the driver report encoding for rate/bandwidth reporting on RX frames. Much of this patch was done with the following spatch: @@ expression status; @@ -status->flag & (RX_FLAG_HT | RX_FLAG_VHT) +status->enc_flags & (RX_ENC_FLAG_HT | RX_ENC_FLAG_VHT) @@ assignment operator op; expression status; @@ -status->flag op RX_FLAG_SHORTPRE +status->enc_flags op RX_ENC_FLAG_SHORTPRE @@ expression status; @@ -status->flag & RX_FLAG_SHORTPRE +status->enc_flags & RX_ENC_FLAG_SHORTPRE @@ assignment operator op; expression status; @@ -status->flag op RX_FLAG_HT +status->enc_flags op RX_ENC_FLAG_HT @@ expression status; @@ -status->flag & RX_FLAG_HT +status->enc_flags & RX_ENC_FLAG_HT @@ assignment operator op; expression status; @@ -status->flag op RX_FLAG_40MHZ +status->enc_flags op RX_ENC_FLAG_40MHZ @@ expression status; @@ -status->flag & RX_FLAG_40MHZ +status->enc_flags & RX_ENC_FLAG_40MHZ @@ assignment operator op; expression status; @@ -status->flag op RX_FLAG_SHORT_GI +status->enc_flags op RX_ENC_FLAG_SHORT_GI @@ expression status; @@ -status->flag & RX_FLAG_SHORT_GI +status->enc_flags & RX_ENC_FLAG_SHORT_GI @@ assignment operator op; expression status; @@ -status->flag op RX_FLAG_HT_GF +status->enc_flags op RX_ENC_FLAG_HT_GF @@ expression status; @@ -status->flag & RX_FLAG_HT_GF +status->enc_flags & RX_ENC_FLAG_HT_GF @@ assignment operator op; expression status; @@ -status->flag op RX_FLAG_VHT +status->enc_flags op RX_ENC_FLAG_VHT @@ expression status; @@ -status->flag & RX_FLAG_VHT +status->enc_flags & RX_ENC_FLAG_VHT @@ assignment operator op; expression status; @@ -status->flag op RX_FLAG_STBC_MASK +status->enc_flags op RX_ENC_FLAG_STBC_MASK @@ expression status; @@ -status->flag & RX_FLAG_STBC_MASK +status->enc_flags & RX_ENC_FLAG_STBC_MASK @@ assignment operator op; expression status; @@ -status->flag op RX_FLAG_LDPC +status->enc_flags op RX_ENC_FLAG_LDPC @@ expression status; @@ -status->flag & RX_FLAG_LDPC +status->enc_flags & RX_ENC_FLAG_LDPC @@ assignment operator op; expression status; @@ -status->flag op RX_FLAG_10MHZ +status->enc_flags op RX_ENC_FLAG_10MHZ @@ expression status; @@ -status->flag & RX_FLAG_10MHZ +status->enc_flags & RX_ENC_FLAG_10MHZ @@ assignment operator op; expression status; @@ -status->flag op RX_FLAG_5MHZ +status->enc_flags op RX_ENC_FLAG_5MHZ @@ expression status; @@ -status->flag & RX_FLAG_5MHZ +status->enc_flags & RX_ENC_FLAG_5MHZ @@ assignment operator op; expression status; @@ -status->vht_flag op RX_VHT_FLAG_80MHZ +status->enc_flags op RX_ENC_FLAG_80MHZ @@ expression status; @@ -status->vht_flag & RX_VHT_FLAG_80MHZ +status->enc_flags & RX_ENC_FLAG_80MHZ @@ assignment operator op; expression status; @@ -status->vht_flag op RX_VHT_FLAG_160MHZ +status->enc_flags op RX_ENC_FLAG_160MHZ @@ expression status; @@ -status->vht_flag & RX_VHT_FLAG_160MHZ +status->enc_flags & RX_ENC_FLAG_160MHZ @@ assignment operator op; expression status; @@ -status->vht_flag op RX_VHT_FLAG_BF +status->enc_flags op RX_ENC_FLAG_BF @@ expression status; @@ -status->vht_flag & RX_VHT_FLAG_BF +status->enc_flags & RX_ENC_FLAG_BF @@ assignment operator op; expression status, STBC; @@ -status->flag op STBC << RX_FLAG_STBC_SHIFT +status->enc_flags op STBC << RX_ENC_FLAG_STBC_SHIFT @@ assignment operator op; expression status; @@ -status.flag op RX_FLAG_SHORTPRE +status.enc_flags op RX_ENC_FLAG_SHORTPRE @@ expression status; @@ -status.flag & RX_FLAG_SHORTPRE +status.enc_flags & RX_ENC_FLAG_SHORTPRE @@ assignment operator op; expression status; @@ -status.flag op RX_FLAG_HT +status.enc_flags op RX_ENC_FLAG_HT @@ expression status; @@ -status.flag & RX_FLAG_HT +status.enc_flags & RX_ENC_FLAG_HT @@ assignment operator op; expression status; @@ -status.flag op RX_FLAG_40MHZ +status.enc_flags op RX_ENC_FLAG_40MHZ @@ expression status; @@ -status.flag & RX_FLAG_40MHZ +status.enc_flags & RX_ENC_FLAG_40MHZ @@ assignment operator op; expression status; @@ -status.flag op RX_FLAG_SHORT_GI +status.enc_flags op RX_ENC_FLAG_SHORT_GI @@ expression status; @@ -status.flag & RX_FLAG_SHORT_GI +status.enc_flags & RX_ENC_FLAG_SHORT_GI @@ assignment operator op; expression status; @@ -status.flag op RX_FLAG_HT_GF +status.enc_flags op RX_ENC_FLAG_HT_GF @@ expression status; @@ -status.flag & RX_FLAG_HT_GF +status.enc_flags & RX_ENC_FLAG_HT_GF @@ assignment operator op; expression status; @@ -status.flag op RX_FLAG_VHT +status.enc_flags op RX_ENC_FLAG_VHT @@ expression status; @@ -status.flag & RX_FLAG_VHT +status.enc_flags & RX_ENC_FLAG_VHT @@ assignment operator op; expression status; @@ -status.flag op RX_FLAG_STBC_MASK +status.enc_flags op RX_ENC_FLAG_STBC_MASK @@ expression status; @@ -status.flag & RX_FLAG_STBC_MASK +status.enc_flags & RX_ENC_FLAG_STBC_MASK @@ assignment operator op; expression status; @@ -status.flag op RX_FLAG_LDPC +status.enc_flags op RX_ENC_FLAG_LDPC @@ expression status; @@ -status.flag & RX_FLAG_LDPC +status.enc_flags & RX_ENC_FLAG_LDPC @@ assignment operator op; expression status; @@ -status.flag op RX_FLAG_10MHZ +status.enc_flags op RX_ENC_FLAG_10MHZ @@ expression status; @@ -status.flag & RX_FLAG_10MHZ +status.enc_flags & RX_ENC_FLAG_10MHZ @@ assignment operator op; expression status; @@ -status.flag op RX_FLAG_5MHZ +status.enc_flags op RX_ENC_FLAG_5MHZ @@ expression status; @@ -status.flag & RX_FLAG_5MHZ +status.enc_flags & RX_ENC_FLAG_5MHZ @@ assignment operator op; expression status; @@ -status.vht_flag op RX_VHT_FLAG_80MHZ +status.enc_flags op RX_ENC_FLAG_80MHZ @@ expression status; @@ -status.vht_flag & RX_VHT_FLAG_80MHZ +status.enc_flags & RX_ENC_FLAG_80MHZ @@ assignment operator op; expression status; @@ -status.vht_flag op RX_VHT_FLAG_160MHZ +status.enc_flags op RX_ENC_FLAG_160MHZ @@ expression status; @@ -status.vht_flag & RX_VHT_FLAG_160MHZ +status.enc_flags & RX_ENC_FLAG_160MHZ @@ assignment operator op; expression status; @@ -status.vht_flag op RX_VHT_FLAG_BF +status.enc_flags op RX_ENC_FLAG_BF @@ expression status; @@ -status.vht_flag & RX_VHT_FLAG_BF +status.enc_flags & RX_ENC_FLAG_BF @@ assignment operator op; expression status, STBC; @@ -status.flag op STBC << RX_FLAG_STBC_SHIFT +status.enc_flags op STBC << RX_ENC_FLAG_STBC_SHIFT @@ @@ -RX_FLAG_STBC_SHIFT +RX_ENC_FLAG_STBC_SHIFT Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2017-04-26 17:13:00 +08:00
rx_status.enc_flags |= RX_ENC_FLAG_SHORT_GI;
/* TODO: simulate optional packet loss */
rx_status.signal = data->rx_rssi;
if (info->control.vif)
rx_status.signal += info->control.vif->bss_conf.txpower;
if (data->ps != PS_DISABLED)
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
/* release the skb's source info */
skb_orphan(skb);
skb_dst_drop(skb);
skb->mark = 0;
skb_ext_reset(skb);
nf_reset_ct(skb);
/*
* Get absolute mactime here so all HWs RX at the "same time", and
* absolute TX time for beacon mactime so the timestamp matches.
* Giving beacons a different mactime than non-beacons looks messy, but
* it helps the Toffset be exact and a ~10us mactime discrepancy
* probably doesn't really matter.
*/
if (ieee80211_is_beacon(hdr->frame_control) ||
ieee80211_is_probe_resp(hdr->frame_control)) {
rx_status.boottime_ns = ktime_get_boottime_ns();
now = data->abs_bcn_ts;
} else {
now = mac80211_hwsim_get_tsf_raw();
}
/* Copy skb to all enabled radios that are on the current frequency */
spin_lock(&hwsim_radio_lock);
list_for_each_entry(data2, &hwsim_radios, list) {
struct sk_buff *nskb;
struct tx_iter_data tx_iter_data = {
.receive = false,
.channel = chan,
};
if (data == data2)
continue;
if (!data2->started || (data2->idle && !data2->tmp_chan) ||
!hwsim_ps_rx_ok(data2, skb))
continue;
if (!(data->group & data2->group))
continue;
if (data->netgroup != data2->netgroup)
continue;
if (!hwsim_chans_compat(chan, data2->tmp_chan) &&
!hwsim_chans_compat(chan, data2->channel)) {
ieee80211_iterate_active_interfaces_atomic(
data2->hw, IEEE80211_IFACE_ITER_NORMAL,
mac80211_hwsim_tx_iter, &tx_iter_data);
if (!tx_iter_data.receive)
continue;
}
/*
* reserve some space for our vendor and the normal
* radiotap header, since we're copying anyway
*/
if (skb->len < PAGE_SIZE && paged_rx) {
struct page *page = alloc_page(GFP_ATOMIC);
if (!page)
continue;
nskb = dev_alloc_skb(128);
if (!nskb) {
__free_page(page);
continue;
}
memcpy(page_address(page), skb->data, skb->len);
skb_add_rx_frag(nskb, 0, page, 0, skb->len, skb->len);
} else {
nskb = skb_copy(skb, GFP_ATOMIC);
if (!nskb)
continue;
}
if (mac80211_hwsim_addr_match(data2, hdr->addr1))
ack = true;
rx_status.mactime = now + data2->tsf_offset;
memcpy(IEEE80211_SKB_RXCB(nskb), &rx_status, sizeof(rx_status));
mac80211_hwsim_add_vendor_rtap(nskb);
data2->rx_pkts++;
data2->rx_bytes += nskb->len;
ieee80211_rx_irqsafe(data2->hw, nskb);
}
spin_unlock(&hwsim_radio_lock);
return ack;
}
static struct ieee80211_bss_conf *
mac80211_hwsim_select_tx_link(struct mac80211_hwsim_data *data,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct ieee80211_hdr *hdr,
struct ieee80211_link_sta **link_sta)
{
struct hwsim_sta_priv *sp = (void *)sta->drv_priv;
int i;
if (!vif->valid_links)
return &vif->bss_conf;
/* FIXME: handle multicast TX properly */
if (is_multicast_ether_addr(hdr->addr1) || WARN_ON_ONCE(!sta)) {
unsigned int first_link = ffs(vif->valid_links) - 1;
return rcu_dereference(vif->link_conf[first_link]);
}
if (WARN_ON_ONCE(!sta->valid_links))
return &vif->bss_conf;
for (i = 0; i < ARRAY_SIZE(vif->link_conf); i++) {
struct ieee80211_bss_conf *bss_conf;
unsigned int link_id;
/* round-robin the available link IDs */
link_id = (sp->last_link + i + 1) % ARRAY_SIZE(vif->link_conf);
*link_sta = rcu_dereference(sta->link[link_id]);
if (!*link_sta)
continue;
bss_conf = rcu_dereference(vif->link_conf[link_id]);
if (WARN_ON_ONCE(!bss_conf))
continue;
sp->last_link = link_id;
return bss_conf;
}
return NULL;
}
static void mac80211_hwsim_tx(struct ieee80211_hw *hw,
struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct mac80211_hwsim_data *data = hw->priv;
struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (void *)skb->data;
struct ieee80211_chanctx_conf *chanctx_conf;
struct ieee80211_channel *channel;
bool ack;
enum nl80211_chan_width confbw = NL80211_CHAN_WIDTH_20_NOHT;
u32 _portid, i;
if (WARN_ON(skb->len < 10)) {
/* Should not happen; just a sanity check for addr1 use */
ieee80211_free_txskb(hw, skb);
return;
}
if (!data->use_chanctx) {
channel = data->channel;
confbw = data->bw;
} else if (txi->hw_queue == 4) {
channel = data->tmp_chan;
} else {
u8 link = u32_get_bits(IEEE80211_SKB_CB(skb)->control.flags,
IEEE80211_TX_CTRL_MLO_LINK);
struct ieee80211_vif *vif = txi->control.vif;
struct ieee80211_link_sta *link_sta = NULL;
struct ieee80211_sta *sta = control->sta;
struct ieee80211_bss_conf *bss_conf;
if (link != IEEE80211_LINK_UNSPECIFIED) {
bss_conf = rcu_dereference(txi->control.vif->link_conf[link]);
if (sta)
link_sta = rcu_dereference(sta->link[link]);
} else {
bss_conf = mac80211_hwsim_select_tx_link(data, vif, sta,
hdr, &link_sta);
}
if (WARN_ON(!bss_conf)) {
ieee80211_free_txskb(hw, skb);
return;
}
if (sta && sta->mlo) {
if (WARN_ON(!link_sta)) {
ieee80211_free_txskb(hw, skb);
return;
}
/* address translation to link addresses on TX */
ether_addr_copy(hdr->addr1, link_sta->addr);
ether_addr_copy(hdr->addr2, bss_conf->addr);
/* translate A3 only if it's the BSSID */
if (!ieee80211_has_tods(hdr->frame_control) &&
!ieee80211_has_fromds(hdr->frame_control)) {
if (ether_addr_equal(hdr->addr3, sta->addr))
ether_addr_copy(hdr->addr3, link_sta->addr);
else if (ether_addr_equal(hdr->addr3, vif->addr))
ether_addr_copy(hdr->addr3, bss_conf->addr);
}
/* no need to look at A4, if present it's SA */
}
chanctx_conf = rcu_dereference(bss_conf->chanctx_conf);
if (chanctx_conf) {
channel = chanctx_conf->def.chan;
confbw = chanctx_conf->def.width;
} else {
channel = NULL;
}
}
if (WARN(!channel, "TX w/o channel - queue = %d\n", txi->hw_queue)) {
ieee80211_free_txskb(hw, skb);
return;
}
if (data->idle && !data->tmp_chan) {
wiphy_dbg(hw->wiphy, "Trying to TX when idle - reject\n");
ieee80211_free_txskb(hw, skb);
return;
}
if (txi->control.vif)
hwsim_check_magic(txi->control.vif);
if (control->sta)
hwsim_check_sta_magic(control->sta);
if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
ieee80211_get_tx_rates(txi->control.vif, control->sta, skb,
txi->control.rates,
ARRAY_SIZE(txi->control.rates));
for (i = 0; i < ARRAY_SIZE(txi->control.rates); i++) {
u16 rflags = txi->control.rates[i].flags;
/* initialize to data->bw for 5/10 MHz handling */
enum nl80211_chan_width bw = data->bw;
if (txi->control.rates[i].idx == -1)
break;
if (rflags & IEEE80211_TX_RC_40_MHZ_WIDTH)
bw = NL80211_CHAN_WIDTH_40;
else if (rflags & IEEE80211_TX_RC_80_MHZ_WIDTH)
bw = NL80211_CHAN_WIDTH_80;
else if (rflags & IEEE80211_TX_RC_160_MHZ_WIDTH)
bw = NL80211_CHAN_WIDTH_160;
if (WARN_ON(hwsim_get_chanwidth(bw) > hwsim_get_chanwidth(confbw)))
return;
}
if (skb->len >= 24 + 8 &&
ieee80211_is_probe_resp(hdr->frame_control)) {
/* fake header transmission time */
struct ieee80211_mgmt *mgmt;
struct ieee80211_rate *txrate;
/* TODO: get MCS */
int bitrate = 100;
u64 ts;
mgmt = (struct ieee80211_mgmt *)skb->data;
txrate = ieee80211_get_tx_rate(hw, txi);
if (txrate)
bitrate = txrate->bitrate;
ts = mac80211_hwsim_get_tsf_raw();
mgmt->u.probe_resp.timestamp =
cpu_to_le64(ts + data->tsf_offset +
24 * 8 * 10 / bitrate);
}
mac80211_hwsim_monitor_rx(hw, skb, channel);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* wmediumd mode check */
locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE() Please do not apply this to mainline directly, instead please re-run the coccinelle script shown below and apply its output. For several reasons, it is desirable to use {READ,WRITE}_ONCE() in preference to ACCESS_ONCE(), and new code is expected to use one of the former. So far, there's been no reason to change most existing uses of ACCESS_ONCE(), as these aren't harmful, and changing them results in churn. However, for some features, the read/write distinction is critical to correct operation. To distinguish these cases, separate read/write accessors must be used. This patch migrates (most) remaining ACCESS_ONCE() instances to {READ,WRITE}_ONCE(), using the following coccinelle script: ---- // Convert trivial ACCESS_ONCE() uses to equivalent READ_ONCE() and // WRITE_ONCE() // $ make coccicheck COCCI=/home/mark/once.cocci SPFLAGS="--include-headers" MODE=patch virtual patch @ depends on patch @ expression E1, E2; @@ - ACCESS_ONCE(E1) = E2 + WRITE_ONCE(E1, E2) @ depends on patch @ expression E; @@ - ACCESS_ONCE(E) + READ_ONCE(E) ---- Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: davem@davemloft.net Cc: linux-arch@vger.kernel.org Cc: mpe@ellerman.id.au Cc: shuah@kernel.org Cc: snitzer@redhat.com Cc: thor.thayer@linux.intel.com Cc: tj@kernel.org Cc: viro@zeniv.linux.org.uk Cc: will.deacon@arm.com Link: http://lkml.kernel.org/r/1508792849-3115-19-git-send-email-paulmck@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-10-24 05:07:29 +08:00
_portid = READ_ONCE(data->wmediumd);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
if (_portid || hwsim_virtio_enabled)
return mac80211_hwsim_tx_frame_nl(hw, skb, _portid, channel);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* NO wmediumd detected, perfect medium simulation */
data->tx_pkts++;
data->tx_bytes += skb->len;
ack = mac80211_hwsim_tx_frame_no_nl(hw, skb, channel);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
if (ack && skb->len >= 16)
mac80211_hwsim_monitor_ack(channel, hdr->addr2);
ieee80211_tx_info_clear_status(txi);
/* frame was transmitted at most favorable rate at first attempt */
txi->control.rates[0].count = 1;
txi->control.rates[1].idx = -1;
if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack)
txi->flags |= IEEE80211_TX_STAT_ACK;
ieee80211_tx_status_irqsafe(hw, skb);
}
static int mac80211_hwsim_start(struct ieee80211_hw *hw)
{
struct mac80211_hwsim_data *data = hw->priv;
wiphy_dbg(hw->wiphy, "%s\n", __func__);
data->started = true;
return 0;
}
static void mac80211_hwsim_stop(struct ieee80211_hw *hw)
{
struct mac80211_hwsim_data *data = hw->priv;
int i;
data->started = false;
for (i = 0; i < ARRAY_SIZE(data->link_data); i++)
hrtimer_cancel(&data->link_data[i].beacon_timer);
while (!skb_queue_empty(&data->pending))
ieee80211_free_txskb(hw, skb_dequeue(&data->pending));
wiphy_dbg(hw->wiphy, "%s\n", __func__);
}
static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
__func__, ieee80211_vif_type_p2p(vif),
vif->addr);
hwsim_set_magic(vif);
if (vif->type != NL80211_IFTYPE_MONITOR)
mac80211_hwsim_config_mac_nl(hw, vif->addr, true);
vif->cab_queue = 0;
vif->hw_queue[IEEE80211_AC_VO] = 0;
vif->hw_queue[IEEE80211_AC_VI] = 1;
vif->hw_queue[IEEE80211_AC_BE] = 2;
vif->hw_queue[IEEE80211_AC_BK] = 3;
return 0;
}
static int mac80211_hwsim_change_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum nl80211_iftype newtype,
bool newp2p)
{
newtype = ieee80211_iftype_p2p(newtype, newp2p);
wiphy_dbg(hw->wiphy,
"%s (old type=%d, new type=%d, mac_addr=%pM)\n",
__func__, ieee80211_vif_type_p2p(vif),
newtype, vif->addr);
hwsim_check_magic(vif);
/*
* interface may change from non-AP to AP in
* which case this needs to be set up again
*/
vif->cab_queue = 0;
return 0;
}
static void mac80211_hwsim_remove_interface(
struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
wiphy_dbg(hw->wiphy, "%s (type=%d mac_addr=%pM)\n",
__func__, ieee80211_vif_type_p2p(vif),
vif->addr);
hwsim_check_magic(vif);
hwsim_clear_magic(vif);
if (vif->type != NL80211_IFTYPE_MONITOR)
mac80211_hwsim_config_mac_nl(hw, vif->addr, false);
}
static void mac80211_hwsim_tx_frame(struct ieee80211_hw *hw,
struct sk_buff *skb,
struct ieee80211_channel *chan)
{
struct mac80211_hwsim_data *data = hw->priv;
locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE() Please do not apply this to mainline directly, instead please re-run the coccinelle script shown below and apply its output. For several reasons, it is desirable to use {READ,WRITE}_ONCE() in preference to ACCESS_ONCE(), and new code is expected to use one of the former. So far, there's been no reason to change most existing uses of ACCESS_ONCE(), as these aren't harmful, and changing them results in churn. However, for some features, the read/write distinction is critical to correct operation. To distinguish these cases, separate read/write accessors must be used. This patch migrates (most) remaining ACCESS_ONCE() instances to {READ,WRITE}_ONCE(), using the following coccinelle script: ---- // Convert trivial ACCESS_ONCE() uses to equivalent READ_ONCE() and // WRITE_ONCE() // $ make coccicheck COCCI=/home/mark/once.cocci SPFLAGS="--include-headers" MODE=patch virtual patch @ depends on patch @ expression E1, E2; @@ - ACCESS_ONCE(E1) = E2 + WRITE_ONCE(E1, E2) @ depends on patch @ expression E; @@ - ACCESS_ONCE(E) + READ_ONCE(E) ---- Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: davem@davemloft.net Cc: linux-arch@vger.kernel.org Cc: mpe@ellerman.id.au Cc: shuah@kernel.org Cc: snitzer@redhat.com Cc: thor.thayer@linux.intel.com Cc: tj@kernel.org Cc: viro@zeniv.linux.org.uk Cc: will.deacon@arm.com Link: http://lkml.kernel.org/r/1508792849-3115-19-git-send-email-paulmck@linux.vnet.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-10-24 05:07:29 +08:00
u32 _pid = READ_ONCE(data->wmediumd);
if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE)) {
struct ieee80211_tx_info *txi = IEEE80211_SKB_CB(skb);
ieee80211_get_tx_rates(txi->control.vif, NULL, skb,
txi->control.rates,
ARRAY_SIZE(txi->control.rates));
}
mac80211_hwsim_monitor_rx(hw, skb, chan);
if (_pid || hwsim_virtio_enabled)
return mac80211_hwsim_tx_frame_nl(hw, skb, _pid, chan);
data->tx_pkts++;
data->tx_bytes += skb->len;
mac80211_hwsim_tx_frame_no_nl(hw, skb, chan);
dev_kfree_skb(skb);
}
static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac,
struct ieee80211_vif *vif)
{
struct mac80211_hwsim_link_data *link_data = arg;
u32 link_id = link_data->link_id;
struct ieee80211_bss_conf *link_conf;
struct mac80211_hwsim_data *data =
container_of(link_data, struct mac80211_hwsim_data,
link_data[link_id]);
struct ieee80211_hw *hw = data->hw;
struct ieee80211_tx_info *info;
struct ieee80211_rate *txrate;
struct ieee80211_mgmt *mgmt;
struct sk_buff *skb;
/* TODO: get MCS */
int bitrate = 100;
hwsim_check_magic(vif);
link_conf = rcu_dereference(vif->link_conf[link_id]);
if (!link_conf)
return;
if (vif->type != NL80211_IFTYPE_AP &&
vif->type != NL80211_IFTYPE_MESH_POINT &&
vif->type != NL80211_IFTYPE_ADHOC &&
vif->type != NL80211_IFTYPE_OCB)
return;
skb = ieee80211_beacon_get(hw, vif, link_data->link_id);
if (skb == NULL)
return;
info = IEEE80211_SKB_CB(skb);
if (ieee80211_hw_check(hw, SUPPORTS_RC_TABLE))
ieee80211_get_tx_rates(vif, NULL, skb,
info->control.rates,
ARRAY_SIZE(info->control.rates));
txrate = ieee80211_get_tx_rate(hw, info);
if (txrate)
bitrate = txrate->bitrate;
mgmt = (struct ieee80211_mgmt *) skb->data;
/* fake header transmission time */
data->abs_bcn_ts = mac80211_hwsim_get_tsf_raw();
if (ieee80211_is_s1g_beacon(mgmt->frame_control)) {
struct ieee80211_ext *ext = (void *) mgmt;
ext->u.s1g_beacon.timestamp = cpu_to_le32(data->abs_bcn_ts +
data->tsf_offset +
10 * 8 * 10 /
bitrate);
} else {
mgmt->u.beacon.timestamp = cpu_to_le64(data->abs_bcn_ts +
data->tsf_offset +
24 * 8 * 10 /
bitrate);
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
mac80211_hwsim_tx_frame(hw, skb,
rcu_dereference(link_conf->chanctx_conf)->def.chan);
while ((skb = ieee80211_get_buffered_bc(hw, vif)) != NULL) {
mac80211_hwsim_tx_frame(hw, skb,
rcu_dereference(link_conf->chanctx_conf)->def.chan);
}
if (link_conf->csa_active && ieee80211_beacon_cntdwn_is_complete(vif))
ieee80211_csa_finish(vif);
}
static enum hrtimer_restart
mac80211_hwsim_beacon(struct hrtimer *timer)
{
struct mac80211_hwsim_link_data *link_data =
container_of(timer, struct mac80211_hwsim_link_data, beacon_timer);
struct mac80211_hwsim_data *data =
container_of(link_data, struct mac80211_hwsim_data,
link_data[link_data->link_id]);
struct ieee80211_hw *hw = data->hw;
u64 bcn_int = link_data->beacon_int;
if (!data->started)
return HRTIMER_NORESTART;
ieee80211_iterate_active_interfaces_atomic(
hw, IEEE80211_IFACE_ITER_NORMAL,
mac80211_hwsim_beacon_tx, link_data);
/* beacon at new TBTT + beacon interval */
if (data->bcn_delta) {
bcn_int -= data->bcn_delta;
data->bcn_delta = 0;
}
hrtimer_forward_now(&link_data->beacon_timer,
mac80211-hwsim: fix late beacon hrtimer handling Thomas explained in https://lore.kernel.org/r/87mtoeb4hb.ffs@tglx that our handling of the hrtimer here is wrong: If the timer fires late (e.g. due to vCPU scheduling, as reported by Dmitry/syzbot) then it tries to actually rearm the timer at the next deadline, which might be in the past already: 1 2 3 N N+1 | | | ... | | ^ intended to fire here (1) ^ next deadline here (2) ^ actually fired here The next time it fires, it's later, but will still try to schedule for the next deadline (now 3), etc. until it catches up with N, but that might take a long time, causing stalls etc. Now, all of this is simulation, so we just have to fix it, but note that the behaviour is wrong even per spec, since there's no value then in sending all those beacons unaligned - they should be aligned to the TBTT (1, 2, 3, ... in the picture), and if we're a bit (or a lot) late, then just resume at that point. Therefore, change the code to use hrtimer_forward_now() which will ensure that the next firing of the timer would be at N+1 (in the picture), i.e. the next interval point after the current time. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Reported-by: Dmitry Vyukov <dvyukov@google.com> Reported-by: syzbot+0e964fad69a9c462bc1e@syzkaller.appspotmail.com Fixes: 01e59e467ecf ("mac80211_hwsim: hrtimer beacon") Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20210915112936.544f383472eb.I3f9712009027aa09244b65399bf18bf482a8c4f1@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-09-15 17:29:37 +08:00
ns_to_ktime(bcn_int * NSEC_PER_USEC));
return HRTIMER_RESTART;
}
static const char * const hwsim_chanwidths[] = {
[NL80211_CHAN_WIDTH_5] = "ht5",
[NL80211_CHAN_WIDTH_10] = "ht10",
[NL80211_CHAN_WIDTH_20_NOHT] = "noht",
[NL80211_CHAN_WIDTH_20] = "ht20",
[NL80211_CHAN_WIDTH_40] = "ht40",
[NL80211_CHAN_WIDTH_80] = "vht80",
[NL80211_CHAN_WIDTH_80P80] = "vht80p80",
[NL80211_CHAN_WIDTH_160] = "vht160",
[NL80211_CHAN_WIDTH_1] = "1MHz",
[NL80211_CHAN_WIDTH_2] = "2MHz",
[NL80211_CHAN_WIDTH_4] = "4MHz",
[NL80211_CHAN_WIDTH_8] = "8MHz",
[NL80211_CHAN_WIDTH_16] = "16MHz",
};
static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed)
{
struct mac80211_hwsim_data *data = hw->priv;
struct ieee80211_conf *conf = &hw->conf;
static const char *smps_modes[IEEE80211_SMPS_NUM_MODES] = {
[IEEE80211_SMPS_AUTOMATIC] = "auto",
[IEEE80211_SMPS_OFF] = "off",
[IEEE80211_SMPS_STATIC] = "static",
[IEEE80211_SMPS_DYNAMIC] = "dynamic",
};
int idx;
if (conf->chandef.chan)
wiphy_dbg(hw->wiphy,
"%s (freq=%d(%d - %d)/%s idle=%d ps=%d smps=%s)\n",
__func__,
conf->chandef.chan->center_freq,
conf->chandef.center_freq1,
conf->chandef.center_freq2,
hwsim_chanwidths[conf->chandef.width],
!!(conf->flags & IEEE80211_CONF_IDLE),
!!(conf->flags & IEEE80211_CONF_PS),
smps_modes[conf->smps_mode]);
else
wiphy_dbg(hw->wiphy,
"%s (freq=0 idle=%d ps=%d smps=%s)\n",
__func__,
!!(conf->flags & IEEE80211_CONF_IDLE),
!!(conf->flags & IEEE80211_CONF_PS),
smps_modes[conf->smps_mode]);
data->idle = !!(conf->flags & IEEE80211_CONF_IDLE);
WARN_ON(conf->chandef.chan && data->use_chanctx);
mutex_lock(&data->mutex);
if (data->scanning && conf->chandef.chan) {
for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
if (data->survey_data[idx].channel == data->channel) {
data->survey_data[idx].start =
data->survey_data[idx].next_start;
data->survey_data[idx].end = jiffies;
break;
}
}
data->channel = conf->chandef.chan;
data->bw = conf->chandef.width;
for (idx = 0; idx < ARRAY_SIZE(data->survey_data); idx++) {
if (data->survey_data[idx].channel &&
data->survey_data[idx].channel != data->channel)
continue;
data->survey_data[idx].channel = data->channel;
data->survey_data[idx].next_start = jiffies;
break;
}
} else {
data->channel = conf->chandef.chan;
data->bw = conf->chandef.width;
}
mutex_unlock(&data->mutex);
for (idx = 0; idx < ARRAY_SIZE(data->link_data); idx++) {
struct mac80211_hwsim_link_data *link_data =
&data->link_data[idx];
if (!data->started || !link_data->beacon_int) {
hrtimer_cancel(&link_data->beacon_timer);
} else if (!hrtimer_is_queued(&link_data->beacon_timer)) {
u64 tsf = mac80211_hwsim_get_tsf(hw, NULL);
u32 bcn_int = link_data->beacon_int;
u64 until_tbtt = bcn_int - do_div(tsf, bcn_int);
hrtimer_start(&link_data->beacon_timer,
ns_to_ktime(until_tbtt * NSEC_PER_USEC),
HRTIMER_MODE_REL_SOFT);
}
}
return 0;
}
static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw,
unsigned int changed_flags,
unsigned int *total_flags,u64 multicast)
{
struct mac80211_hwsim_data *data = hw->priv;
wiphy_dbg(hw->wiphy, "%s\n", __func__);
data->rx_filter = 0;
if (*total_flags & FIF_ALLMULTI)
data->rx_filter |= FIF_ALLMULTI;
if (*total_flags & FIF_MCAST_ACTION)
data->rx_filter |= FIF_MCAST_ACTION;
*total_flags = data->rx_filter;
}
static void mac80211_hwsim_bcn_en_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
unsigned int *count = data;
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
if (vp->bcn_en)
(*count)++;
}
static void mac80211_hwsim_vif_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u64 changed)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
hwsim_check_magic(vif);
wiphy_dbg(hw->wiphy, "%s(changed=0x%llx vif->addr=%pM)\n",
__func__, changed, vif->addr);
if (changed & BSS_CHANGED_ASSOC) {
wiphy_dbg(hw->wiphy, " ASSOC: assoc=%d aid=%d\n",
vif->cfg.assoc, vif->cfg.aid);
vp->assoc = vif->cfg.assoc;
vp->aid = vif->cfg.aid;
}
}
static void mac80211_hwsim_link_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info,
u64 changed)
{
struct hwsim_vif_priv *vp = (void *)vif->drv_priv;
struct mac80211_hwsim_data *data = hw->priv;
unsigned int link_id = info->link_id;
struct mac80211_hwsim_link_data *link_data = &data->link_data[link_id];
hwsim_check_magic(vif);
wiphy_dbg(hw->wiphy, "%s(changed=0x%llx vif->addr=%pM, link id %u)\n",
__func__, (unsigned long long)changed, vif->addr, link_id);
if (changed & BSS_CHANGED_BSSID) {
wiphy_dbg(hw->wiphy, "%s: BSSID changed: %pM\n",
__func__, info->bssid);
memcpy(vp->bssid, info->bssid, ETH_ALEN);
}
if (changed & BSS_CHANGED_BEACON_ENABLED) {
wiphy_dbg(hw->wiphy, " BCN EN: %d (BI=%u)\n",
info->enable_beacon, info->beacon_int);
vp->bcn_en = info->enable_beacon;
if (data->started &&
!hrtimer_is_queued(&link_data->beacon_timer) &&
info->enable_beacon) {
u64 tsf, until_tbtt;
u32 bcn_int;
link_data->beacon_int = info->beacon_int * 1024;
tsf = mac80211_hwsim_get_tsf(hw, vif);
bcn_int = link_data->beacon_int;
until_tbtt = bcn_int - do_div(tsf, bcn_int);
hrtimer_start(&link_data->beacon_timer,
ns_to_ktime(until_tbtt * NSEC_PER_USEC),
HRTIMER_MODE_REL_SOFT);
} else if (!info->enable_beacon) {
unsigned int count = 0;
ieee80211_iterate_active_interfaces_atomic(
data->hw, IEEE80211_IFACE_ITER_NORMAL,
mac80211_hwsim_bcn_en_iter, &count);
wiphy_dbg(hw->wiphy, " beaconing vifs remaining: %u",
count);
if (count == 0) {
hrtimer_cancel(&link_data->beacon_timer);
link_data->beacon_int = 0;
}
}
}
if (changed & BSS_CHANGED_ERP_CTS_PROT) {
wiphy_dbg(hw->wiphy, " ERP_CTS_PROT: %d\n",
info->use_cts_prot);
}
if (changed & BSS_CHANGED_ERP_PREAMBLE) {
wiphy_dbg(hw->wiphy, " ERP_PREAMBLE: %d\n",
info->use_short_preamble);
}
if (changed & BSS_CHANGED_ERP_SLOT) {
wiphy_dbg(hw->wiphy, " ERP_SLOT: %d\n", info->use_short_slot);
}
if (changed & BSS_CHANGED_HT) {
wiphy_dbg(hw->wiphy, " HT: op_mode=0x%x\n",
info->ht_operation_mode);
}
if (changed & BSS_CHANGED_BASIC_RATES) {
wiphy_dbg(hw->wiphy, " BASIC_RATES: 0x%llx\n",
(unsigned long long) info->basic_rates);
}
if (changed & BSS_CHANGED_TXPOWER)
wiphy_dbg(hw->wiphy, " TX Power: %d dBm\n", info->txpower);
}
static void
mac80211_hwsim_sta_rc_update(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
u32 changed)
{
struct mac80211_hwsim_data *data = hw->priv;
u32 bw = U32_MAX;
int link_id;
rcu_read_lock();
for (link_id = 0;
link_id < ARRAY_SIZE(vif->link_conf);
link_id++) {
enum nl80211_chan_width confbw = NL80211_CHAN_WIDTH_20_NOHT;
struct ieee80211_bss_conf *vif_conf;
struct ieee80211_link_sta *link_sta;
link_sta = rcu_dereference(sta->link[link_id]);
if (!link_sta)
continue;
switch (link_sta->bandwidth) {
#define C(_bw) case IEEE80211_STA_RX_BW_##_bw: bw = _bw; break
C(20);
C(40);
C(80);
C(160);
C(320);
#undef C
}
if (!data->use_chanctx) {
confbw = data->bw;
} else {
struct ieee80211_chanctx_conf *chanctx_conf;
vif_conf = rcu_dereference(vif->link_conf[link_id]);
if (WARN_ON(!vif_conf))
continue;
chanctx_conf = rcu_dereference(vif_conf->chanctx_conf);
if (!WARN_ON(!chanctx_conf))
confbw = chanctx_conf->def.width;
}
WARN(bw > hwsim_get_chanwidth(confbw),
"intf %pM [link=%d]: bad STA %pM bandwidth %d MHz (%d) > channel config %d MHz (%d)\n",
vif->addr, link_id, sta->addr, bw, sta->deflink.bandwidth,
hwsim_get_chanwidth(data->bw), data->bw);
}
rcu_read_unlock();
}
static int mac80211_hwsim_sta_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
hwsim_check_magic(vif);
hwsim_set_sta_magic(sta);
mac80211_hwsim_sta_rc_update(hw, vif, sta, 0);
return 0;
}
static int mac80211_hwsim_sta_remove(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
hwsim_check_magic(vif);
hwsim_clear_sta_magic(sta);
return 0;
}
static int mac80211_hwsim_sta_state(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
enum ieee80211_sta_state old_state,
enum ieee80211_sta_state new_state)
{
if (new_state == IEEE80211_STA_NOTEXIST)
return mac80211_hwsim_sta_remove(hw, vif, sta);
if (old_state == IEEE80211_STA_NOTEXIST)
return mac80211_hwsim_sta_add(hw, vif, sta);
return 0;
}
static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
enum sta_notify_cmd cmd,
struct ieee80211_sta *sta)
{
hwsim_check_magic(vif);
switch (cmd) {
case STA_NOTIFY_SLEEP:
case STA_NOTIFY_AWAKE:
/* TODO: make good use of these flags */
break;
default:
WARN(1, "Invalid sta notify: %d\n", cmd);
break;
}
}
static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw,
struct ieee80211_sta *sta,
bool set)
{
hwsim_check_sta_magic(sta);
return 0;
}
static int mac80211_hwsim_conf_tx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
unsigned int link_id, u16 queue,
const struct ieee80211_tx_queue_params *params)
{
wiphy_dbg(hw->wiphy,
"%s (queue=%d txop=%d cw_min=%d cw_max=%d aifs=%d)\n",
__func__, queue,
params->txop, params->cw_min,
params->cw_max, params->aifs);
return 0;
}
static int mac80211_hwsim_get_survey(struct ieee80211_hw *hw, int idx,
struct survey_info *survey)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
if (idx < 0 || idx >= ARRAY_SIZE(hwsim->survey_data))
return -ENOENT;
mutex_lock(&hwsim->mutex);
survey->channel = hwsim->survey_data[idx].channel;
if (!survey->channel) {
mutex_unlock(&hwsim->mutex);
return -ENOENT;
}
/*
* Magically conjured dummy values --- this is only ok for simulated hardware.
*
* A real driver which cannot determine real values noise MUST NOT
* report any, especially not a magically conjured ones :-)
*/
survey->filled = SURVEY_INFO_NOISE_DBM |
SURVEY_INFO_TIME |
SURVEY_INFO_TIME_BUSY;
survey->noise = -92;
survey->time =
jiffies_to_msecs(hwsim->survey_data[idx].end -
hwsim->survey_data[idx].start);
/* report 12.5% of channel time is used */
survey->time_busy = survey->time/8;
mutex_unlock(&hwsim->mutex);
return 0;
}
#ifdef CONFIG_NL80211_TESTMODE
/*
* This section contains example code for using netlink
* attributes with the testmode command in nl80211.
*/
/* These enums need to be kept in sync with userspace */
enum hwsim_testmode_attr {
__HWSIM_TM_ATTR_INVALID = 0,
HWSIM_TM_ATTR_CMD = 1,
HWSIM_TM_ATTR_PS = 2,
/* keep last */
__HWSIM_TM_ATTR_AFTER_LAST,
HWSIM_TM_ATTR_MAX = __HWSIM_TM_ATTR_AFTER_LAST - 1
};
enum hwsim_testmode_cmd {
HWSIM_TM_CMD_SET_PS = 0,
HWSIM_TM_CMD_GET_PS = 1,
HWSIM_TM_CMD_STOP_QUEUES = 2,
HWSIM_TM_CMD_WAKE_QUEUES = 3,
};
static const struct nla_policy hwsim_testmode_policy[HWSIM_TM_ATTR_MAX + 1] = {
[HWSIM_TM_ATTR_CMD] = { .type = NLA_U32 },
[HWSIM_TM_ATTR_PS] = { .type = NLA_U32 },
};
static int mac80211_hwsim_testmode_cmd(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
void *data, int len)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
struct nlattr *tb[HWSIM_TM_ATTR_MAX + 1];
struct sk_buff *skb;
int err, ps;
netlink: make validation more configurable for future strictness We currently have two levels of strict validation: 1) liberal (default) - undefined (type >= max) & NLA_UNSPEC attributes accepted - attribute length >= expected accepted - garbage at end of message accepted 2) strict (opt-in) - NLA_UNSPEC attributes accepted - attribute length >= expected accepted Split out parsing strictness into four different options: * TRAILING - check that there's no trailing data after parsing attributes (in message or nested) * MAXTYPE - reject attrs > max known type * UNSPEC - reject attributes with NLA_UNSPEC policy entries * STRICT_ATTRS - strictly validate attribute size The default for future things should be *everything*. The current *_strict() is a combination of TRAILING and MAXTYPE, and is renamed to _deprecated_strict(). The current regular parsing has none of this, and is renamed to *_parse_deprecated(). Additionally it allows us to selectively set one of the new flags even on old policies. Notably, the UNSPEC flag could be useful in this case, since it can be arranged (by filling in the policy) to not be an incompatible userspace ABI change, but would then going forward prevent forgetting attribute entries. Similar can apply to the POLICY flag. We end up with the following renames: * nla_parse -> nla_parse_deprecated * nla_parse_strict -> nla_parse_deprecated_strict * nlmsg_parse -> nlmsg_parse_deprecated * nlmsg_parse_strict -> nlmsg_parse_deprecated_strict * nla_parse_nested -> nla_parse_nested_deprecated * nla_validate_nested -> nla_validate_nested_deprecated Using spatch, of course: @@ expression TB, MAX, HEAD, LEN, POL, EXT; @@ -nla_parse(TB, MAX, HEAD, LEN, POL, EXT) +nla_parse_deprecated(TB, MAX, HEAD, LEN, POL, EXT) @@ expression NLH, HDRLEN, TB, MAX, POL, EXT; @@ -nlmsg_parse(NLH, HDRLEN, TB, MAX, POL, EXT) +nlmsg_parse_deprecated(NLH, HDRLEN, TB, MAX, POL, EXT) @@ expression NLH, HDRLEN, TB, MAX, POL, EXT; @@ -nlmsg_parse_strict(NLH, HDRLEN, TB, MAX, POL, EXT) +nlmsg_parse_deprecated_strict(NLH, HDRLEN, TB, MAX, POL, EXT) @@ expression TB, MAX, NLA, POL, EXT; @@ -nla_parse_nested(TB, MAX, NLA, POL, EXT) +nla_parse_nested_deprecated(TB, MAX, NLA, POL, EXT) @@ expression START, MAX, POL, EXT; @@ -nla_validate_nested(START, MAX, POL, EXT) +nla_validate_nested_deprecated(START, MAX, POL, EXT) @@ expression NLH, HDRLEN, MAX, POL, EXT; @@ -nlmsg_validate(NLH, HDRLEN, MAX, POL, EXT) +nlmsg_validate_deprecated(NLH, HDRLEN, MAX, POL, EXT) For this patch, don't actually add the strict, non-renamed versions yet so that it breaks compile if I get it wrong. Also, while at it, make nla_validate and nla_parse go down to a common __nla_validate_parse() function to avoid code duplication. Ultimately, this allows us to have very strict validation for every new caller of nla_parse()/nlmsg_parse() etc as re-introduced in the next patch, while existing things will continue to work as is. In effect then, this adds fully strict validation for any new command. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-26 20:07:28 +08:00
err = nla_parse_deprecated(tb, HWSIM_TM_ATTR_MAX, data, len,
hwsim_testmode_policy, NULL);
if (err)
return err;
if (!tb[HWSIM_TM_ATTR_CMD])
return -EINVAL;
switch (nla_get_u32(tb[HWSIM_TM_ATTR_CMD])) {
case HWSIM_TM_CMD_SET_PS:
if (!tb[HWSIM_TM_ATTR_PS])
return -EINVAL;
ps = nla_get_u32(tb[HWSIM_TM_ATTR_PS]);
return hwsim_fops_ps_write(hwsim, ps);
case HWSIM_TM_CMD_GET_PS:
skb = cfg80211_testmode_alloc_reply_skb(hw->wiphy,
nla_total_size(sizeof(u32)));
if (!skb)
return -ENOMEM;
if (nla_put_u32(skb, HWSIM_TM_ATTR_PS, hwsim->ps))
goto nla_put_failure;
return cfg80211_testmode_reply(skb);
case HWSIM_TM_CMD_STOP_QUEUES:
ieee80211_stop_queues(hw);
return 0;
case HWSIM_TM_CMD_WAKE_QUEUES:
ieee80211_wake_queues(hw);
return 0;
default:
return -EOPNOTSUPP;
}
nla_put_failure:
kfree_skb(skb);
return -ENOBUFS;
}
#endif
static int mac80211_hwsim_ampdu_action(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_ampdu_params *params)
{
struct ieee80211_sta *sta = params->sta;
enum ieee80211_ampdu_mlme_action action = params->action;
u16 tid = params->tid;
switch (action) {
case IEEE80211_AMPDU_TX_START:
return IEEE80211_AMPDU_TX_START_IMMEDIATE;
case IEEE80211_AMPDU_TX_STOP_CONT:
case IEEE80211_AMPDU_TX_STOP_FLUSH:
case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
break;
case IEEE80211_AMPDU_TX_OPERATIONAL:
break;
case IEEE80211_AMPDU_RX_START:
case IEEE80211_AMPDU_RX_STOP:
break;
default:
return -EOPNOTSUPP;
}
return 0;
}
static void mac80211_hwsim_flush(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u32 queues, bool drop)
{
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* Not implemented, queues only on kernel side */
}
static void hw_scan_work(struct work_struct *work)
{
struct mac80211_hwsim_data *hwsim =
container_of(work, struct mac80211_hwsim_data, hw_scan.work);
struct cfg80211_scan_request *req = hwsim->hw_scan_request;
int dwell, i;
mutex_lock(&hwsim->mutex);
if (hwsim->scan_chan_idx >= req->n_channels) {
struct cfg80211_scan_info info = {
.aborted = false,
};
wiphy_dbg(hwsim->hw->wiphy, "hw scan complete\n");
ieee80211_scan_completed(hwsim->hw, &info);
hwsim->hw_scan_request = NULL;
hwsim->hw_scan_vif = NULL;
hwsim->tmp_chan = NULL;
mutex_unlock(&hwsim->mutex);
mac80211_hwsim_config_mac_nl(hwsim->hw, hwsim->scan_addr,
false);
return;
}
wiphy_dbg(hwsim->hw->wiphy, "hw scan %d MHz\n",
req->channels[hwsim->scan_chan_idx]->center_freq);
hwsim->tmp_chan = req->channels[hwsim->scan_chan_idx];
if (hwsim->tmp_chan->flags & (IEEE80211_CHAN_NO_IR |
IEEE80211_CHAN_RADAR) ||
!req->n_ssids) {
dwell = 120;
} else {
dwell = 30;
/* send probes */
for (i = 0; i < req->n_ssids; i++) {
struct sk_buff *probe;
struct ieee80211_mgmt *mgmt;
probe = ieee80211_probereq_get(hwsim->hw,
hwsim->scan_addr,
req->ssids[i].ssid,
req->ssids[i].ssid_len,
req->ie_len);
if (!probe)
continue;
mgmt = (struct ieee80211_mgmt *) probe->data;
memcpy(mgmt->da, req->bssid, ETH_ALEN);
memcpy(mgmt->bssid, req->bssid, ETH_ALEN);
if (req->ie_len)
skb_put_data(probe, req->ie, req->ie_len);
rcu_read_lock();
if (!ieee80211_tx_prepare_skb(hwsim->hw,
hwsim->hw_scan_vif,
probe,
hwsim->tmp_chan->band,
NULL)) {
rcu_read_unlock();
kfree_skb(probe);
continue;
}
local_bh_disable();
mac80211_hwsim_tx_frame(hwsim->hw, probe,
hwsim->tmp_chan);
rcu_read_unlock();
local_bh_enable();
}
}
ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan,
msecs_to_jiffies(dwell));
hwsim->survey_data[hwsim->scan_chan_idx].channel = hwsim->tmp_chan;
hwsim->survey_data[hwsim->scan_chan_idx].start = jiffies;
hwsim->survey_data[hwsim->scan_chan_idx].end =
jiffies + msecs_to_jiffies(dwell);
hwsim->scan_chan_idx++;
mutex_unlock(&hwsim->mutex);
}
static int mac80211_hwsim_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_scan_request *hw_req)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
struct cfg80211_scan_request *req = &hw_req->req;
mutex_lock(&hwsim->mutex);
if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
mutex_unlock(&hwsim->mutex);
return -EBUSY;
}
hwsim->hw_scan_request = req;
hwsim->hw_scan_vif = vif;
hwsim->scan_chan_idx = 0;
if (req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR)
get_random_mask_addr(hwsim->scan_addr,
hw_req->req.mac_addr,
hw_req->req.mac_addr_mask);
else
memcpy(hwsim->scan_addr, vif->addr, ETH_ALEN);
memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
mutex_unlock(&hwsim->mutex);
mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
wiphy_dbg(hw->wiphy, "hwsim hw_scan request\n");
ieee80211_queue_delayed_work(hwsim->hw, &hwsim->hw_scan, 0);
return 0;
}
static void mac80211_hwsim_cancel_hw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
struct cfg80211_scan_info info = {
.aborted = true,
};
wiphy_dbg(hw->wiphy, "hwsim cancel_hw_scan\n");
cancel_delayed_work_sync(&hwsim->hw_scan);
mutex_lock(&hwsim->mutex);
ieee80211_scan_completed(hwsim->hw, &info);
hwsim->tmp_chan = NULL;
hwsim->hw_scan_request = NULL;
hwsim->hw_scan_vif = NULL;
mutex_unlock(&hwsim->mutex);
}
static void mac80211_hwsim_sw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
mutex_lock(&hwsim->mutex);
if (hwsim->scanning) {
pr_debug("two hwsim sw_scans detected!\n");
goto out;
}
pr_debug("hwsim sw_scan request, prepping stuff\n");
memcpy(hwsim->scan_addr, mac_addr, ETH_ALEN);
mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, true);
hwsim->scanning = true;
memset(hwsim->survey_data, 0, sizeof(hwsim->survey_data));
out:
mutex_unlock(&hwsim->mutex);
}
static void mac80211_hwsim_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
mutex_lock(&hwsim->mutex);
pr_debug("hwsim sw_scan_complete\n");
hwsim->scanning = false;
mac80211_hwsim_config_mac_nl(hw, hwsim->scan_addr, false);
eth_zero_addr(hwsim->scan_addr);
mutex_unlock(&hwsim->mutex);
}
static void hw_roc_start(struct work_struct *work)
{
struct mac80211_hwsim_data *hwsim =
container_of(work, struct mac80211_hwsim_data, roc_start.work);
mutex_lock(&hwsim->mutex);
wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC begins\n");
hwsim->tmp_chan = hwsim->roc_chan;
ieee80211_ready_on_channel(hwsim->hw);
ieee80211_queue_delayed_work(hwsim->hw, &hwsim->roc_done,
msecs_to_jiffies(hwsim->roc_duration));
mutex_unlock(&hwsim->mutex);
}
static void hw_roc_done(struct work_struct *work)
{
struct mac80211_hwsim_data *hwsim =
container_of(work, struct mac80211_hwsim_data, roc_done.work);
mutex_lock(&hwsim->mutex);
ieee80211_remain_on_channel_expired(hwsim->hw);
hwsim->tmp_chan = NULL;
mutex_unlock(&hwsim->mutex);
wiphy_dbg(hwsim->hw->wiphy, "hwsim ROC expired\n");
}
static int mac80211_hwsim_roc(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_channel *chan,
int duration,
enum ieee80211_roc_type type)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
mutex_lock(&hwsim->mutex);
if (WARN_ON(hwsim->tmp_chan || hwsim->hw_scan_request)) {
mutex_unlock(&hwsim->mutex);
return -EBUSY;
}
hwsim->roc_chan = chan;
hwsim->roc_duration = duration;
mutex_unlock(&hwsim->mutex);
wiphy_dbg(hw->wiphy, "hwsim ROC (%d MHz, %d ms)\n",
chan->center_freq, duration);
ieee80211_queue_delayed_work(hw, &hwsim->roc_start, HZ/50);
return 0;
}
static int mac80211_hwsim_croc(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
cancel_delayed_work_sync(&hwsim->roc_start);
cancel_delayed_work_sync(&hwsim->roc_done);
mutex_lock(&hwsim->mutex);
hwsim->tmp_chan = NULL;
mutex_unlock(&hwsim->mutex);
wiphy_dbg(hw->wiphy, "hwsim ROC canceled\n");
return 0;
}
static int mac80211_hwsim_add_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
mutex_lock(&hwsim->mutex);
hwsim->chanctx = ctx;
mutex_unlock(&hwsim->mutex);
hwsim_set_chanctx_magic(ctx);
wiphy_dbg(hw->wiphy,
"add channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
ctx->def.chan->center_freq, ctx->def.width,
ctx->def.center_freq1, ctx->def.center_freq2);
return 0;
}
static void mac80211_hwsim_remove_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
mutex_lock(&hwsim->mutex);
hwsim->chanctx = NULL;
mutex_unlock(&hwsim->mutex);
wiphy_dbg(hw->wiphy,
"remove channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
ctx->def.chan->center_freq, ctx->def.width,
ctx->def.center_freq1, ctx->def.center_freq2);
hwsim_check_chanctx_magic(ctx);
hwsim_clear_chanctx_magic(ctx);
}
static void mac80211_hwsim_change_chanctx(struct ieee80211_hw *hw,
struct ieee80211_chanctx_conf *ctx,
u32 changed)
{
struct mac80211_hwsim_data *hwsim = hw->priv;
mutex_lock(&hwsim->mutex);
hwsim->chanctx = ctx;
mutex_unlock(&hwsim->mutex);
hwsim_check_chanctx_magic(ctx);
wiphy_dbg(hw->wiphy,
"change channel context control: %d MHz/width: %d/cfreqs:%d/%d MHz\n",
ctx->def.chan->center_freq, ctx->def.width,
ctx->def.center_freq1, ctx->def.center_freq2);
}
static int mac80211_hwsim_assign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
struct ieee80211_chanctx_conf *ctx)
{
hwsim_check_magic(vif);
hwsim_check_chanctx_magic(ctx);
return 0;
}
static void mac80211_hwsim_unassign_vif_chanctx(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
struct ieee80211_chanctx_conf *ctx)
{
hwsim_check_magic(vif);
hwsim_check_chanctx_magic(ctx);
}
static const char mac80211_hwsim_gstrings_stats[][ETH_GSTRING_LEN] = {
"tx_pkts_nic",
"tx_bytes_nic",
"rx_pkts_nic",
"rx_bytes_nic",
"d_tx_dropped",
"d_tx_failed",
"d_ps_mode",
"d_group",
};
#define MAC80211_HWSIM_SSTATS_LEN ARRAY_SIZE(mac80211_hwsim_gstrings_stats)
static void mac80211_hwsim_get_et_strings(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u32 sset, u8 *data)
{
if (sset == ETH_SS_STATS)
memcpy(data, *mac80211_hwsim_gstrings_stats,
sizeof(mac80211_hwsim_gstrings_stats));
}
static int mac80211_hwsim_get_et_sset_count(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, int sset)
{
if (sset == ETH_SS_STATS)
return MAC80211_HWSIM_SSTATS_LEN;
return 0;
}
static void mac80211_hwsim_get_et_stats(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ethtool_stats *stats, u64 *data)
{
struct mac80211_hwsim_data *ar = hw->priv;
int i = 0;
data[i++] = ar->tx_pkts;
data[i++] = ar->tx_bytes;
data[i++] = ar->rx_pkts;
data[i++] = ar->rx_bytes;
data[i++] = ar->tx_dropped;
data[i++] = ar->tx_failed;
data[i++] = ar->ps;
data[i++] = ar->group;
WARN_ON(i != MAC80211_HWSIM_SSTATS_LEN);
}
static int mac80211_hwsim_tx_last_beacon(struct ieee80211_hw *hw)
{
return 1;
}
static int mac80211_hwsim_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
return -EOPNOTSUPP;
}
static int mac80211_hwsim_change_vif_links(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
u16 old_links, u16 new_links,
struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS])
{
unsigned long rem = old_links & ~new_links ?: BIT(0);
unsigned long add = new_links & ~old_links;
int i;
for_each_set_bit(i, &rem, IEEE80211_MLD_MAX_NUM_LINKS)
mac80211_hwsim_config_mac_nl(hw, old[i]->addr, false);
for_each_set_bit(i, &add, IEEE80211_MLD_MAX_NUM_LINKS) {
struct ieee80211_bss_conf *link_conf;
/* FIXME: figure out how to get the locking here */
link_conf = rcu_dereference_protected(vif->link_conf[i], 1);
if (WARN_ON(!link_conf))
continue;
mac80211_hwsim_config_mac_nl(hw, link_conf->addr, true);
}
return 0;
}
static int mac80211_hwsim_change_sta_links(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
u16 old_links, u16 new_links)
{
return 0;
}
#define HWSIM_COMMON_OPS \
.tx = mac80211_hwsim_tx, \
.start = mac80211_hwsim_start, \
.stop = mac80211_hwsim_stop, \
.add_interface = mac80211_hwsim_add_interface, \
.change_interface = mac80211_hwsim_change_interface, \
.remove_interface = mac80211_hwsim_remove_interface, \
.config = mac80211_hwsim_config, \
.configure_filter = mac80211_hwsim_configure_filter, \
.vif_cfg_changed = mac80211_hwsim_vif_info_changed, \
.link_info_changed = mac80211_hwsim_link_info_changed, \
.tx_last_beacon = mac80211_hwsim_tx_last_beacon, \
.sta_notify = mac80211_hwsim_sta_notify, \
.sta_rc_update = mac80211_hwsim_sta_rc_update, \
.conf_tx = mac80211_hwsim_conf_tx, \
.get_survey = mac80211_hwsim_get_survey, \
CFG80211_TESTMODE_CMD(mac80211_hwsim_testmode_cmd) \
.ampdu_action = mac80211_hwsim_ampdu_action, \
.flush = mac80211_hwsim_flush, \
.get_et_sset_count = mac80211_hwsim_get_et_sset_count, \
.get_et_stats = mac80211_hwsim_get_et_stats, \
.get_et_strings = mac80211_hwsim_get_et_strings,
#define HWSIM_NON_MLO_OPS \
.sta_add = mac80211_hwsim_sta_add, \
.sta_remove = mac80211_hwsim_sta_remove, \
.set_tim = mac80211_hwsim_set_tim, \
.get_tsf = mac80211_hwsim_get_tsf, \
.set_tsf = mac80211_hwsim_set_tsf,
static const struct ieee80211_ops mac80211_hwsim_ops = {
HWSIM_COMMON_OPS
HWSIM_NON_MLO_OPS
.sw_scan_start = mac80211_hwsim_sw_scan,
.sw_scan_complete = mac80211_hwsim_sw_scan_complete,
};
#define HWSIM_CHANCTX_OPS \
.hw_scan = mac80211_hwsim_hw_scan, \
.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan, \
.remain_on_channel = mac80211_hwsim_roc, \
.cancel_remain_on_channel = mac80211_hwsim_croc, \
.add_chanctx = mac80211_hwsim_add_chanctx, \
.remove_chanctx = mac80211_hwsim_remove_chanctx, \
.change_chanctx = mac80211_hwsim_change_chanctx, \
.assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx,\
.unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx,
static const struct ieee80211_ops mac80211_hwsim_mchan_ops = {
HWSIM_COMMON_OPS
HWSIM_NON_MLO_OPS
HWSIM_CHANCTX_OPS
};
static const struct ieee80211_ops mac80211_hwsim_mlo_ops = {
HWSIM_COMMON_OPS
HWSIM_CHANCTX_OPS
.set_rts_threshold = mac80211_hwsim_set_rts_threshold,
.change_vif_links = mac80211_hwsim_change_vif_links,
.change_sta_links = mac80211_hwsim_change_sta_links,
.sta_state = mac80211_hwsim_sta_state,
};
struct hwsim_new_radio_params {
unsigned int channels;
const char *reg_alpha2;
const struct ieee80211_regdomain *regd;
bool reg_strict;
bool p2p_device;
bool use_chanctx;
bool destroy_on_close;
const char *hwname;
bool no_vif;
const u8 *perm_addr;
u32 iftypes;
u32 *ciphers;
u8 n_ciphers;
bool mlo;
};
static void hwsim_mcast_config_msg(struct sk_buff *mcast_skb,
struct genl_info *info)
{
if (info)
genl_notify(&hwsim_genl_family, mcast_skb, info,
HWSIM_MCGRP_CONFIG, GFP_KERNEL);
else
genlmsg_multicast(&hwsim_genl_family, mcast_skb, 0,
HWSIM_MCGRP_CONFIG, GFP_KERNEL);
}
static int append_radio_msg(struct sk_buff *skb, int id,
struct hwsim_new_radio_params *param)
{
int ret;
ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
if (ret < 0)
return ret;
if (param->channels) {
ret = nla_put_u32(skb, HWSIM_ATTR_CHANNELS, param->channels);
if (ret < 0)
return ret;
}
if (param->reg_alpha2) {
ret = nla_put(skb, HWSIM_ATTR_REG_HINT_ALPHA2, 2,
param->reg_alpha2);
if (ret < 0)
return ret;
}
if (param->regd) {
int i;
for (i = 0; i < ARRAY_SIZE(hwsim_world_regdom_custom); i++) {
if (hwsim_world_regdom_custom[i] != param->regd)
continue;
ret = nla_put_u32(skb, HWSIM_ATTR_REG_CUSTOM_REG, i);
if (ret < 0)
return ret;
break;
}
}
if (param->reg_strict) {
ret = nla_put_flag(skb, HWSIM_ATTR_REG_STRICT_REG);
if (ret < 0)
return ret;
}
if (param->p2p_device) {
ret = nla_put_flag(skb, HWSIM_ATTR_SUPPORT_P2P_DEVICE);
if (ret < 0)
return ret;
}
if (param->use_chanctx) {
ret = nla_put_flag(skb, HWSIM_ATTR_USE_CHANCTX);
if (ret < 0)
return ret;
}
if (param->hwname) {
ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME,
strlen(param->hwname), param->hwname);
if (ret < 0)
return ret;
}
return 0;
}
static void hwsim_mcast_new_radio(int id, struct genl_info *info,
struct hwsim_new_radio_params *param)
{
struct sk_buff *mcast_skb;
void *data;
mcast_skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!mcast_skb)
return;
data = genlmsg_put(mcast_skb, 0, 0, &hwsim_genl_family, 0,
HWSIM_CMD_NEW_RADIO);
if (!data)
goto out_err;
if (append_radio_msg(mcast_skb, id, param) < 0)
goto out_err;
genlmsg_end(mcast_skb, data);
hwsim_mcast_config_msg(mcast_skb, info);
return;
out_err:
nlmsg_free(mcast_skb);
}
static const struct ieee80211_sband_iftype_data sband_capa_2ghz[] = {
{
.types_mask = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_AP),
.he_cap = {
.has_he = true,
.he_cap_elem = {
.mac_cap_info[0] =
IEEE80211_HE_MAC_CAP0_HTC_HE,
.mac_cap_info[1] =
IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
.mac_cap_info[2] =
IEEE80211_HE_MAC_CAP2_BSR |
IEEE80211_HE_MAC_CAP2_MU_CASCADING |
IEEE80211_HE_MAC_CAP2_ACK_EN,
.mac_cap_info[3] =
IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
.phy_cap_info[1] =
IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
.phy_cap_info[2] =
IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
/* Leave all the other PHY capability bytes
* unset, as DCM, beam forming, RU and PPE
* threshold information are not supported
*/
},
.he_mcs_nss_supp = {
.rx_mcs_80 = cpu_to_le16(0xfffa),
.tx_mcs_80 = cpu_to_le16(0xfffa),
.rx_mcs_160 = cpu_to_le16(0xffff),
.tx_mcs_160 = cpu_to_le16(0xffff),
.rx_mcs_80p80 = cpu_to_le16(0xffff),
.tx_mcs_80p80 = cpu_to_le16(0xffff),
},
},
.eht_cap = {
.has_eht = true,
.eht_cap_elem = {
.mac_cap_info[0] =
IEEE80211_EHT_MAC_CAP0_EPCS_PRIO_ACCESS |
IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
.phy_cap_info[0] =
IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE,
.phy_cap_info[3] =
IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
.phy_cap_info[4] =
IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
.phy_cap_info[5] =
IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
.phy_cap_info[6] =
IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK,
.phy_cap_info[7] =
IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW,
},
/* For all MCS and bandwidth, set 8 NSS for both Tx and
* Rx
*/
.eht_mcs_nss_supp = {
/*
* Since B0, B1, B2 and B3 are not set in
* the supported channel width set field in the
* HE PHY capabilities information field the
* device is a 20MHz only device on 2.4GHz band.
*/
.only_20mhz = {
.rx_tx_mcs7_max_nss = 0x88,
.rx_tx_mcs9_max_nss = 0x88,
.rx_tx_mcs11_max_nss = 0x88,
.rx_tx_mcs13_max_nss = 0x88,
},
},
/* PPE threshold information is not supported */
},
},
#ifdef CONFIG_MAC80211_MESH
{
.types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
.he_cap = {
.has_he = true,
.he_cap_elem = {
.mac_cap_info[0] =
IEEE80211_HE_MAC_CAP0_HTC_HE,
.mac_cap_info[1] =
IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
.mac_cap_info[2] =
IEEE80211_HE_MAC_CAP2_ACK_EN,
.mac_cap_info[3] =
IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
.phy_cap_info[1] =
IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
.phy_cap_info[2] = 0,
/* Leave all the other PHY capability bytes
* unset, as DCM, beam forming, RU and PPE
* threshold information are not supported
*/
},
.he_mcs_nss_supp = {
.rx_mcs_80 = cpu_to_le16(0xfffa),
.tx_mcs_80 = cpu_to_le16(0xfffa),
.rx_mcs_160 = cpu_to_le16(0xffff),
.tx_mcs_160 = cpu_to_le16(0xffff),
.rx_mcs_80p80 = cpu_to_le16(0xffff),
.tx_mcs_80p80 = cpu_to_le16(0xffff),
},
},
},
#endif
};
static const struct ieee80211_sband_iftype_data sband_capa_5ghz[] = {
{
/* TODO: should we support other types, e.g., P2P?*/
.types_mask = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_AP),
.he_cap = {
.has_he = true,
.he_cap_elem = {
.mac_cap_info[0] =
IEEE80211_HE_MAC_CAP0_HTC_HE,
.mac_cap_info[1] =
IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
.mac_cap_info[2] =
IEEE80211_HE_MAC_CAP2_BSR |
IEEE80211_HE_MAC_CAP2_MU_CASCADING |
IEEE80211_HE_MAC_CAP2_ACK_EN,
.mac_cap_info[3] =
IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
.phy_cap_info[0] =
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
.phy_cap_info[1] =
IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
.phy_cap_info[2] =
IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
/* Leave all the other PHY capability bytes
* unset, as DCM, beam forming, RU and PPE
* threshold information are not supported
*/
},
.he_mcs_nss_supp = {
.rx_mcs_80 = cpu_to_le16(0xfffa),
.tx_mcs_80 = cpu_to_le16(0xfffa),
.rx_mcs_160 = cpu_to_le16(0xfffa),
.tx_mcs_160 = cpu_to_le16(0xfffa),
.rx_mcs_80p80 = cpu_to_le16(0xfffa),
.tx_mcs_80p80 = cpu_to_le16(0xfffa),
},
},
.eht_cap = {
.has_eht = true,
.eht_cap_elem = {
.mac_cap_info[0] =
IEEE80211_EHT_MAC_CAP0_EPCS_PRIO_ACCESS |
IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
.phy_cap_info[0] =
IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE |
IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK,
.phy_cap_info[1] =
IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK |
IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK,
.phy_cap_info[2] =
IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK |
IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK,
.phy_cap_info[3] =
IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
.phy_cap_info[4] =
IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
.phy_cap_info[5] =
IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
.phy_cap_info[6] =
IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK,
.phy_cap_info[7] =
IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW |
IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ,
},
/* For all MCS and bandwidth, set 8 NSS for both Tx and
* Rx
*/
.eht_mcs_nss_supp = {
/*
* As B1 and B2 are set in the supported
* channel width set field in the HE PHY
* capabilities information field include all
* the following MCS/NSS.
*/
.bw._80 = {
.rx_tx_mcs9_max_nss = 0x88,
.rx_tx_mcs11_max_nss = 0x88,
.rx_tx_mcs13_max_nss = 0x88,
},
.bw._160 = {
.rx_tx_mcs9_max_nss = 0x88,
.rx_tx_mcs11_max_nss = 0x88,
.rx_tx_mcs13_max_nss = 0x88,
},
},
/* PPE threshold information is not supported */
},
},
#ifdef CONFIG_MAC80211_MESH
{
/* TODO: should we support other types, e.g., IBSS?*/
.types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
.he_cap = {
.has_he = true,
.he_cap_elem = {
.mac_cap_info[0] =
IEEE80211_HE_MAC_CAP0_HTC_HE,
.mac_cap_info[1] =
IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
.mac_cap_info[2] =
IEEE80211_HE_MAC_CAP2_ACK_EN,
.mac_cap_info[3] =
IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
.phy_cap_info[0] =
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
.phy_cap_info[1] =
IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
.phy_cap_info[2] = 0,
/* Leave all the other PHY capability bytes
* unset, as DCM, beam forming, RU and PPE
* threshold information are not supported
*/
},
.he_mcs_nss_supp = {
.rx_mcs_80 = cpu_to_le16(0xfffa),
.tx_mcs_80 = cpu_to_le16(0xfffa),
.rx_mcs_160 = cpu_to_le16(0xfffa),
.tx_mcs_160 = cpu_to_le16(0xfffa),
.rx_mcs_80p80 = cpu_to_le16(0xfffa),
.tx_mcs_80p80 = cpu_to_le16(0xfffa),
},
},
},
#endif
};
static const struct ieee80211_sband_iftype_data sband_capa_6ghz[] = {
{
/* TODO: should we support other types, e.g., P2P?*/
.types_mask = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_AP),
.he_6ghz_capa = {
.capa = cpu_to_le16(IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START |
IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP |
IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN |
IEEE80211_HE_6GHZ_CAP_SM_PS |
IEEE80211_HE_6GHZ_CAP_RD_RESPONDER |
IEEE80211_HE_6GHZ_CAP_TX_ANTPAT_CONS |
IEEE80211_HE_6GHZ_CAP_RX_ANTPAT_CONS),
},
.he_cap = {
.has_he = true,
.he_cap_elem = {
.mac_cap_info[0] =
IEEE80211_HE_MAC_CAP0_HTC_HE,
.mac_cap_info[1] =
IEEE80211_HE_MAC_CAP1_TF_MAC_PAD_DUR_16US |
IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
.mac_cap_info[2] =
IEEE80211_HE_MAC_CAP2_BSR |
IEEE80211_HE_MAC_CAP2_MU_CASCADING |
IEEE80211_HE_MAC_CAP2_ACK_EN,
.mac_cap_info[3] =
IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
.phy_cap_info[0] =
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
.phy_cap_info[1] =
IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
.phy_cap_info[2] =
IEEE80211_HE_PHY_CAP2_NDP_4x_LTF_AND_3_2US |
IEEE80211_HE_PHY_CAP2_STBC_TX_UNDER_80MHZ |
IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ |
IEEE80211_HE_PHY_CAP2_UL_MU_FULL_MU_MIMO |
IEEE80211_HE_PHY_CAP2_UL_MU_PARTIAL_MU_MIMO,
/* Leave all the other PHY capability bytes
* unset, as DCM, beam forming, RU and PPE
* threshold information are not supported
*/
},
.he_mcs_nss_supp = {
.rx_mcs_80 = cpu_to_le16(0xfffa),
.tx_mcs_80 = cpu_to_le16(0xfffa),
.rx_mcs_160 = cpu_to_le16(0xfffa),
.tx_mcs_160 = cpu_to_le16(0xfffa),
.rx_mcs_80p80 = cpu_to_le16(0xfffa),
.tx_mcs_80p80 = cpu_to_le16(0xfffa),
},
},
.eht_cap = {
.has_eht = true,
.eht_cap_elem = {
.mac_cap_info[0] =
IEEE80211_EHT_MAC_CAP0_EPCS_PRIO_ACCESS |
IEEE80211_EHT_MAC_CAP0_OM_CONTROL |
IEEE80211_EHT_MAC_CAP0_TRIG_TXOP_SHARING_MODE1,
.phy_cap_info[0] =
IEEE80211_EHT_PHY_CAP0_320MHZ_IN_6GHZ |
IEEE80211_EHT_PHY_CAP0_242_TONE_RU_GT20MHZ |
IEEE80211_EHT_PHY_CAP0_NDP_4_EHT_LFT_32_GI |
IEEE80211_EHT_PHY_CAP0_PARTIAL_BW_UL_MU_MIMO |
IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMER |
IEEE80211_EHT_PHY_CAP0_SU_BEAMFORMEE |
IEEE80211_EHT_PHY_CAP0_BEAMFORMEE_SS_80MHZ_MASK,
.phy_cap_info[1] =
IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_80MHZ_MASK |
IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_160MHZ_MASK |
IEEE80211_EHT_PHY_CAP1_BEAMFORMEE_SS_320MHZ_MASK,
.phy_cap_info[2] =
IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_80MHZ_MASK |
IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_160MHZ_MASK |
IEEE80211_EHT_PHY_CAP2_SOUNDING_DIM_320MHZ_MASK,
.phy_cap_info[3] =
IEEE80211_EHT_PHY_CAP3_NG_16_SU_FEEDBACK |
IEEE80211_EHT_PHY_CAP3_NG_16_MU_FEEDBACK |
IEEE80211_EHT_PHY_CAP3_CODEBOOK_4_2_SU_FDBK |
IEEE80211_EHT_PHY_CAP3_CODEBOOK_7_5_MU_FDBK |
IEEE80211_EHT_PHY_CAP3_TRIG_SU_BF_FDBK |
IEEE80211_EHT_PHY_CAP3_TRIG_MU_BF_PART_BW_FDBK |
IEEE80211_EHT_PHY_CAP3_TRIG_CQI_FDBK,
.phy_cap_info[4] =
IEEE80211_EHT_PHY_CAP4_PART_BW_DL_MU_MIMO |
IEEE80211_EHT_PHY_CAP4_PSR_SR_SUPP |
IEEE80211_EHT_PHY_CAP4_POWER_BOOST_FACT_SUPP |
IEEE80211_EHT_PHY_CAP4_EHT_MU_PPDU_4_EHT_LTF_08_GI |
IEEE80211_EHT_PHY_CAP4_MAX_NC_MASK,
.phy_cap_info[5] =
IEEE80211_EHT_PHY_CAP5_NON_TRIG_CQI_FEEDBACK |
IEEE80211_EHT_PHY_CAP5_TX_LESS_242_TONE_RU_SUPP |
IEEE80211_EHT_PHY_CAP5_RX_LESS_242_TONE_RU_SUPP |
IEEE80211_EHT_PHY_CAP5_PPE_THRESHOLD_PRESENT |
IEEE80211_EHT_PHY_CAP5_COMMON_NOMINAL_PKT_PAD_MASK |
IEEE80211_EHT_PHY_CAP5_MAX_NUM_SUPP_EHT_LTF_MASK,
.phy_cap_info[6] =
IEEE80211_EHT_PHY_CAP6_MAX_NUM_SUPP_EHT_LTF_MASK |
IEEE80211_EHT_PHY_CAP6_MCS15_SUPP_MASK |
IEEE80211_EHT_PHY_CAP6_EHT_DUP_6GHZ_SUPP,
.phy_cap_info[7] =
IEEE80211_EHT_PHY_CAP7_20MHZ_STA_RX_NDP_WIDER_BW |
IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_80MHZ |
IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_160MHZ |
IEEE80211_EHT_PHY_CAP7_NON_OFDMA_UL_MU_MIMO_320MHZ |
IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_80MHZ |
IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_160MHZ |
IEEE80211_EHT_PHY_CAP7_MU_BEAMFORMER_320MHZ,
},
/* For all MCS and bandwidth, set 8 NSS for both Tx and
* Rx
*/
.eht_mcs_nss_supp = {
/*
* As B1 and B2 are set in the supported
* channel width set field in the HE PHY
* capabilities information field and 320MHz in
* 6GHz is supported include all the following
* MCS/NSS.
*/
.bw._80 = {
.rx_tx_mcs9_max_nss = 0x88,
.rx_tx_mcs11_max_nss = 0x88,
.rx_tx_mcs13_max_nss = 0x88,
},
.bw._160 = {
.rx_tx_mcs9_max_nss = 0x88,
.rx_tx_mcs11_max_nss = 0x88,
.rx_tx_mcs13_max_nss = 0x88,
},
.bw._320 = {
.rx_tx_mcs9_max_nss = 0x88,
.rx_tx_mcs11_max_nss = 0x88,
.rx_tx_mcs13_max_nss = 0x88,
},
},
/* PPE threshold information is not supported */
},
},
#ifdef CONFIG_MAC80211_MESH
{
/* TODO: should we support other types, e.g., IBSS?*/
.types_mask = BIT(NL80211_IFTYPE_MESH_POINT),
.he_6ghz_capa = {
.capa = cpu_to_le16(IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START |
IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP |
IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN |
IEEE80211_HE_6GHZ_CAP_SM_PS |
IEEE80211_HE_6GHZ_CAP_RD_RESPONDER |
IEEE80211_HE_6GHZ_CAP_TX_ANTPAT_CONS |
IEEE80211_HE_6GHZ_CAP_RX_ANTPAT_CONS),
},
.he_cap = {
.has_he = true,
.he_cap_elem = {
.mac_cap_info[0] =
IEEE80211_HE_MAC_CAP0_HTC_HE,
.mac_cap_info[1] =
IEEE80211_HE_MAC_CAP1_MULTI_TID_AGG_RX_QOS_8,
.mac_cap_info[2] =
IEEE80211_HE_MAC_CAP2_ACK_EN,
.mac_cap_info[3] =
IEEE80211_HE_MAC_CAP3_OMI_CONTROL |
IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_EXT_3,
.mac_cap_info[4] = IEEE80211_HE_MAC_CAP4_AMSDU_IN_AMPDU,
.phy_cap_info[0] =
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G,
.phy_cap_info[1] =
IEEE80211_HE_PHY_CAP1_PREAMBLE_PUNC_RX_MASK |
IEEE80211_HE_PHY_CAP1_DEVICE_CLASS_A |
IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD |
IEEE80211_HE_PHY_CAP1_MIDAMBLE_RX_TX_MAX_NSTS,
.phy_cap_info[2] = 0,
/* Leave all the other PHY capability bytes
* unset, as DCM, beam forming, RU and PPE
* threshold information are not supported
*/
},
.he_mcs_nss_supp = {
.rx_mcs_80 = cpu_to_le16(0xfffa),
.tx_mcs_80 = cpu_to_le16(0xfffa),
.rx_mcs_160 = cpu_to_le16(0xfffa),
.tx_mcs_160 = cpu_to_le16(0xfffa),
.rx_mcs_80p80 = cpu_to_le16(0xfffa),
.tx_mcs_80p80 = cpu_to_le16(0xfffa),
},
},
},
#endif
};
static void mac80211_hwsim_sband_capab(struct ieee80211_supported_band *sband)
{
u16 n_iftype_data;
if (sband->band == NL80211_BAND_2GHZ) {
n_iftype_data = ARRAY_SIZE(sband_capa_2ghz);
sband->iftype_data =
(struct ieee80211_sband_iftype_data *)sband_capa_2ghz;
} else if (sband->band == NL80211_BAND_5GHZ) {
n_iftype_data = ARRAY_SIZE(sband_capa_5ghz);
sband->iftype_data =
(struct ieee80211_sband_iftype_data *)sband_capa_5ghz;
} else if (sband->band == NL80211_BAND_6GHZ) {
n_iftype_data = ARRAY_SIZE(sband_capa_6ghz);
sband->iftype_data =
(struct ieee80211_sband_iftype_data *)sband_capa_6ghz;
} else {
return;
}
sband->n_iftype_data = n_iftype_data;
}
#ifdef CONFIG_MAC80211_MESH
#define HWSIM_MESH_BIT BIT(NL80211_IFTYPE_MESH_POINT)
#else
#define HWSIM_MESH_BIT 0
#endif
#define HWSIM_DEFAULT_IF_LIMIT \
(BIT(NL80211_IFTYPE_STATION) | \
BIT(NL80211_IFTYPE_P2P_CLIENT) | \
BIT(NL80211_IFTYPE_AP) | \
BIT(NL80211_IFTYPE_P2P_GO) | \
HWSIM_MESH_BIT)
#define HWSIM_IFTYPE_SUPPORT_MASK \
(BIT(NL80211_IFTYPE_STATION) | \
BIT(NL80211_IFTYPE_AP) | \
BIT(NL80211_IFTYPE_P2P_CLIENT) | \
BIT(NL80211_IFTYPE_P2P_GO) | \
BIT(NL80211_IFTYPE_ADHOC) | \
BIT(NL80211_IFTYPE_MESH_POINT) | \
BIT(NL80211_IFTYPE_OCB))
static int mac80211_hwsim_new_radio(struct genl_info *info,
struct hwsim_new_radio_params *param)
{
int err;
u8 addr[ETH_ALEN];
struct mac80211_hwsim_data *data;
struct ieee80211_hw *hw;
enum nl80211_band band;
const struct ieee80211_ops *ops = &mac80211_hwsim_ops;
struct net *net;
int idx, i;
int n_limits = 0;
if (WARN_ON(param->channels > 1 && !param->use_chanctx))
return -EINVAL;
spin_lock_bh(&hwsim_radio_lock);
idx = hwsim_radio_idx++;
spin_unlock_bh(&hwsim_radio_lock);
if (param->mlo)
ops = &mac80211_hwsim_mlo_ops;
else if (param->use_chanctx)
ops = &mac80211_hwsim_mchan_ops;
hw = ieee80211_alloc_hw_nm(sizeof(*data), ops, param->hwname);
if (!hw) {
pr_debug("mac80211_hwsim: ieee80211_alloc_hw failed\n");
err = -ENOMEM;
goto failed;
}
/* ieee80211_alloc_hw_nm may have used a default name */
param->hwname = wiphy_name(hw->wiphy);
if (info)
net = genl_info_net(info);
else
net = &init_net;
wiphy_net_set(hw->wiphy, net);
data = hw->priv;
data->hw = hw;
data->dev = device_create(hwsim_class, NULL, 0, hw, "hwsim%d", idx);
if (IS_ERR(data->dev)) {
printk(KERN_DEBUG
"mac80211_hwsim: device_create failed (%ld)\n",
PTR_ERR(data->dev));
err = -ENOMEM;
goto failed_drvdata;
}
data->dev->driver = &mac80211_hwsim_driver.driver;
err = device_bind_driver(data->dev);
if (err != 0) {
pr_debug("mac80211_hwsim: device_bind_driver failed (%d)\n",
err);
mac80211_hwsim: release driver when ieee80211_register_hw fails The driver is not released when ieee80211_register_hw fails in mac80211_hwsim_create_radio, leading to the access to the unregistered (and possibly freed) device in platform_driver_unregister: [ 0.447547] mac80211_hwsim: ieee80211_register_hw failed (-2) [ 0.448292] ------------[ cut here ]------------ [ 0.448854] WARNING: CPU: 0 PID: 1 at ../include/linux/kref.h:47 kobject_get+0x33/0x50() [ 0.449839] CPU: 0 PID: 1 Comm: swapper Not tainted 3.17.0-00001-gdd46990-dirty #2 [ 0.450813] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.451512] 00000000 00000000 78025e38 7967c6c6 78025e68 7905e09b 7988b480 00000000 [ 0.452579] 00000001 79887d62 0000002f 79170bb3 79170bb3 78397008 79ac9d74 00000001 [ 0.453614] 78025e78 7905e15d 00000009 00000000 78025e84 79170bb3 78397000 78025e8c [ 0.454632] Call Trace: [ 0.454921] [<7967c6c6>] dump_stack+0x16/0x18 [ 0.455453] [<7905e09b>] warn_slowpath_common+0x6b/0x90 [ 0.456067] [<79170bb3>] ? kobject_get+0x33/0x50 [ 0.456612] [<79170bb3>] ? kobject_get+0x33/0x50 [ 0.457155] [<7905e15d>] warn_slowpath_null+0x1d/0x20 [ 0.457748] [<79170bb3>] kobject_get+0x33/0x50 [ 0.458274] [<7925824f>] get_device+0xf/0x20 [ 0.458779] [<7925b5cd>] driver_detach+0x3d/0xa0 [ 0.459331] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.459927] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.460660] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.461248] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.461824] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.462507] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.463161] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.463758] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.464393] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.465001] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.465569] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.466345] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.466972] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.467546] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.468072] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.468658] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.469303] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.469829] ---[ end trace ad8ac403ff8aef5c ]--- [ 0.470509] ------------[ cut here ]------------ [ 0.471047] WARNING: CPU: 0 PID: 1 at ../kernel/locking/lockdep.c:3161 __lock_acquire.isra.22+0x7aa/0xb00() [ 0.472163] DEBUG_LOCKS_WARN_ON(id >= MAX_LOCKDEP_KEYS) [ 0.472774] CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.17.0-00001-gdd46990-dirty #2 [ 0.473815] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.474492] 78025de0 78025de0 78025da0 7967c6c6 78025dd0 7905e09b 79888931 78025dfc [ 0.475515] 00000001 79888a93 00000c59 7907f33a 7907f33a 78028000 fffe9d09 00000000 [ 0.476519] 78025de8 7905e10e 00000009 78025de0 79888931 78025dfc 78025e24 7907f33a [ 0.477523] Call Trace: [ 0.477821] [<7967c6c6>] dump_stack+0x16/0x18 [ 0.478352] [<7905e09b>] warn_slowpath_common+0x6b/0x90 [ 0.478976] [<7907f33a>] ? __lock_acquire.isra.22+0x7aa/0xb00 [ 0.479658] [<7907f33a>] ? __lock_acquire.isra.22+0x7aa/0xb00 [ 0.480417] [<7905e10e>] warn_slowpath_fmt+0x2e/0x30 [ 0.480479] [<7907f33a>] __lock_acquire.isra.22+0x7aa/0xb00 [ 0.480479] [<79078aa5>] ? sched_clock_cpu+0xb5/0xf0 [ 0.480479] [<7907fd06>] lock_acquire+0x56/0x70 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<79682d11>] mutex_lock_nested+0x61/0x2a0 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<7925b5e8>] driver_detach+0x58/0xa0 [ 0.480479] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.480479] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.480479] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.480479] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.480479] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.480479] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.480479] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.480479] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.480479] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.480479] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.480479] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.480479] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.480479] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.480479] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.480479] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.480479] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.480479] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.480479] ---[ end trace ad8ac403ff8aef5d ]--- [ 0.495478] BUG: unable to handle kernel paging request at 00200200 [ 0.496257] IP: [<79682de5>] mutex_lock_nested+0x135/0x2a0 [ 0.496923] *pde = 00000000 [ 0.497290] Oops: 0002 [#1] [ 0.497653] CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.17.0-00001-gdd46990-dirty #2 [ 0.498659] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.499321] task: 78028000 ti: 78024000 task.ti: 78024000 [ 0.499955] EIP: 0060:[<79682de5>] EFLAGS: 00010097 CPU: 0 [ 0.500620] EIP is at mutex_lock_nested+0x135/0x2a0 [ 0.501145] EAX: 00200200 EBX: 78397434 ECX: 78397460 EDX: 78025e70 [ 0.501816] ESI: 00000246 EDI: 78028000 EBP: 78025e8c ESP: 78025e54 [ 0.502497] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 0.503076] CR0: 8005003b CR2: 00200200 CR3: 01b9d000 CR4: 00000690 [ 0.503773] Stack: [ 0.503998] 00000000 00000001 00000000 7925b5e8 78397460 7925b5e8 78397474 78397460 [ 0.504944] 00200200 11111111 78025e70 78397000 79ac9d74 00000001 78025ea0 7925b5e8 [ 0.505451] 79ac9d74 fffffffe 00000001 78025ebc 7925a3ff 7a251398 78025ec8 7925bf80 [ 0.505451] Call Trace: [ 0.505451] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.505451] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.505451] [<7925b5e8>] driver_detach+0x58/0xa0 [ 0.505451] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.505451] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.505451] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.505451] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.505451] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.505451] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.505451] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.505451] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.505451] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.505451] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.505451] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.505451] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.505451] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.505451] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.505451] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.505451] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.505451] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.505451] Code: 89 d8 e8 cf 9b 9f ff 8b 4f 04 8d 55 e4 89 d8 e8 72 9d 9f ff 8d 43 2c 89 c1 89 45 d8 8b 43 30 8d 55 e4 89 53 30 89 4d e4 89 45 e8 <89> 10 8b 55 dc 8b 45 e0 89 7d ec e8 db af 9f ff eb 11 90 31 c0 [ 0.505451] EIP: [<79682de5>] mutex_lock_nested+0x135/0x2a0 SS:ESP 0068:78025e54 [ 0.505451] CR2: 0000000000200200 [ 0.505451] ---[ end trace ad8ac403ff8aef5e ]--- [ 0.505451] Kernel panic - not syncing: Fatal exception Fixes: 9ea927748ced ("mac80211_hwsim: Register and bind to driver") Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Junjie Mao <eternal.n08@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-10-28 09:31:47 +08:00
goto failed_bind;
}
skb_queue_head_init(&data->pending);
SET_IEEE80211_DEV(hw, data->dev);
if (!param->perm_addr) {
eth_zero_addr(addr);
addr[0] = 0x02;
addr[3] = idx >> 8;
addr[4] = idx;
memcpy(data->addresses[0].addr, addr, ETH_ALEN);
/* Why need here second address ? */
memcpy(data->addresses[1].addr, addr, ETH_ALEN);
data->addresses[1].addr[0] |= 0x40;
hw->wiphy->n_addresses = 2;
hw->wiphy->addresses = data->addresses;
/* possible address clash is checked at hash table insertion */
} else {
memcpy(data->addresses[0].addr, param->perm_addr, ETH_ALEN);
/* compatibility with automatically generated mac addr */
memcpy(data->addresses[1].addr, param->perm_addr, ETH_ALEN);
hw->wiphy->n_addresses = 2;
hw->wiphy->addresses = data->addresses;
}
data->channels = param->channels;
data->use_chanctx = param->use_chanctx;
data->idx = idx;
data->destroy_on_close = param->destroy_on_close;
if (info)
data->portid = info->snd_portid;
/* setup interface limits, only on interface types we support */
if (param->iftypes & BIT(NL80211_IFTYPE_ADHOC)) {
data->if_limits[n_limits].max = 1;
data->if_limits[n_limits].types = BIT(NL80211_IFTYPE_ADHOC);
n_limits++;
}
if (param->iftypes & HWSIM_DEFAULT_IF_LIMIT) {
data->if_limits[n_limits].max = 2048;
/*
* For this case, we may only support a subset of
* HWSIM_DEFAULT_IF_LIMIT, therefore we only want to add the
* bits that both param->iftype & HWSIM_DEFAULT_IF_LIMIT have.
*/
data->if_limits[n_limits].types =
HWSIM_DEFAULT_IF_LIMIT & param->iftypes;
n_limits++;
}
if (param->iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
data->if_limits[n_limits].max = 1;
data->if_limits[n_limits].types =
BIT(NL80211_IFTYPE_P2P_DEVICE);
n_limits++;
}
if (data->use_chanctx) {
hw->wiphy->max_scan_ssids = 255;
hw->wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
hw->wiphy->max_remain_on_channel_duration = 1000;
data->if_combination.radar_detect_widths = 0;
data->if_combination.num_different_channels = data->channels;
data->chanctx = NULL;
} else {
data->if_combination.num_different_channels = 1;
data->if_combination.radar_detect_widths =
BIT(NL80211_CHAN_WIDTH_5) |
BIT(NL80211_CHAN_WIDTH_10) |
BIT(NL80211_CHAN_WIDTH_20_NOHT) |
BIT(NL80211_CHAN_WIDTH_20) |
BIT(NL80211_CHAN_WIDTH_40) |
BIT(NL80211_CHAN_WIDTH_80) |
BIT(NL80211_CHAN_WIDTH_160);
}
if (!n_limits) {
err = -EINVAL;
goto failed_hw;
}
data->if_combination.max_interfaces = 0;
for (i = 0; i < n_limits; i++)
data->if_combination.max_interfaces +=
data->if_limits[i].max;
data->if_combination.n_limits = n_limits;
data->if_combination.limits = data->if_limits;
/*
* If we actually were asked to support combinations,
* advertise them - if there's only a single thing like
* only IBSS then don't advertise it as combinations.
*/
if (data->if_combination.max_interfaces > 1) {
hw->wiphy->iface_combinations = &data->if_combination;
hw->wiphy->n_iface_combinations = 1;
}
if (param->ciphers) {
memcpy(data->ciphers, param->ciphers,
param->n_ciphers * sizeof(u32));
hw->wiphy->cipher_suites = data->ciphers;
hw->wiphy->n_cipher_suites = param->n_ciphers;
}
data->rx_rssi = DEFAULT_RX_RSSI;
INIT_DELAYED_WORK(&data->roc_start, hw_roc_start);
INIT_DELAYED_WORK(&data->roc_done, hw_roc_done);
INIT_DELAYED_WORK(&data->hw_scan, hw_scan_work);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
hw->queues = 5;
hw->offchannel_tx_hw_queue = 4;
ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
ieee80211_hw_set(hw, CHANCTX_STA_CSA);
ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
ieee80211_hw_set(hw, QUEUE_CONTROL);
ieee80211_hw_set(hw, WANT_MONITOR_VIF);
ieee80211_hw_set(hw, AMPDU_AGGREGATION);
ieee80211_hw_set(hw, MFP_CAPABLE);
ieee80211_hw_set(hw, SIGNAL_DBM);
ieee80211_hw_set(hw, SUPPORTS_PS);
ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
ieee80211_hw_set(hw, TDLS_WIDER_BW);
ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
if (param->mlo) {
hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_MLO;
ieee80211_hw_set(hw, HAS_RATE_CONTROL);
ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
ieee80211_hw_set(hw, CONNECTION_MONITOR);
ieee80211_hw_set(hw, AP_LINK_PS);
} else {
ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
if (rctbl)
ieee80211_hw_set(hw, SUPPORTS_RC_TABLE);
}
hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
WIPHY_FLAG_AP_UAPSD |
WIPHY_FLAG_SUPPORTS_5_10_MHZ |
WIPHY_FLAG_HAS_CHANNEL_SWITCH;
hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
NL80211_FEATURE_STATIC_SMPS |
NL80211_FEATURE_DYNAMIC_SMPS |
NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
wiphy_ext_feature_set(hw->wiphy,
NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS);
wiphy_ext_feature_set(hw->wiphy,
NL80211_EXT_FEATURE_BEACON_RATE_LEGACY);
hw->wiphy->interface_modes = param->iftypes;
/* ask mac80211 to reserve space for magic */
hw->vif_data_size = sizeof(struct hwsim_vif_priv);
hw->sta_data_size = sizeof(struct hwsim_sta_priv);
hw->chanctx_data_size = sizeof(struct hwsim_chanctx_priv);
memcpy(data->channels_2ghz, hwsim_channels_2ghz,
sizeof(hwsim_channels_2ghz));
memcpy(data->channels_5ghz, hwsim_channels_5ghz,
sizeof(hwsim_channels_5ghz));
memcpy(data->channels_6ghz, hwsim_channels_6ghz,
sizeof(hwsim_channels_6ghz));
memcpy(data->channels_s1g, hwsim_channels_s1g,
sizeof(hwsim_channels_s1g));
memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
for (band = NL80211_BAND_2GHZ; band < NUM_NL80211_BANDS; band++) {
struct ieee80211_supported_band *sband = &data->bands[band];
sband->band = band;
switch (band) {
case NL80211_BAND_2GHZ:
sband->channels = data->channels_2ghz;
sband->n_channels = ARRAY_SIZE(hwsim_channels_2ghz);
sband->bitrates = data->rates;
sband->n_bitrates = ARRAY_SIZE(hwsim_rates);
break;
case NL80211_BAND_5GHZ:
sband->channels = data->channels_5ghz;
sband->n_channels = ARRAY_SIZE(hwsim_channels_5ghz);
sband->bitrates = data->rates + 4;
sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
sband->vht_cap.vht_supported = true;
sband->vht_cap.cap =
IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ |
IEEE80211_VHT_CAP_RXLDPC |
IEEE80211_VHT_CAP_SHORT_GI_80 |
IEEE80211_VHT_CAP_SHORT_GI_160 |
IEEE80211_VHT_CAP_TXSTBC |
IEEE80211_VHT_CAP_RXSTBC_4 |
IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
sband->vht_cap.vht_mcs.rx_mcs_map =
cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 |
IEEE80211_VHT_MCS_SUPPORT_0_9 << 6 |
IEEE80211_VHT_MCS_SUPPORT_0_9 << 8 |
IEEE80211_VHT_MCS_SUPPORT_0_9 << 10 |
IEEE80211_VHT_MCS_SUPPORT_0_9 << 12 |
IEEE80211_VHT_MCS_SUPPORT_0_9 << 14);
sband->vht_cap.vht_mcs.tx_mcs_map =
sband->vht_cap.vht_mcs.rx_mcs_map;
break;
case NL80211_BAND_6GHZ:
sband->channels = data->channels_6ghz;
sband->n_channels = ARRAY_SIZE(hwsim_channels_6ghz);
sband->bitrates = data->rates + 4;
sband->n_bitrates = ARRAY_SIZE(hwsim_rates) - 4;
break;
case NL80211_BAND_S1GHZ:
memcpy(&sband->s1g_cap, &hwsim_s1g_cap,
sizeof(sband->s1g_cap));
sband->channels = data->channels_s1g;
sband->n_channels = ARRAY_SIZE(hwsim_channels_s1g);
break;
default:
continue;
}
if (band != NL80211_BAND_6GHZ){
sband->ht_cap.ht_supported = true;
sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
IEEE80211_HT_CAP_GRN_FLD |
IEEE80211_HT_CAP_SGI_20 |
IEEE80211_HT_CAP_SGI_40 |
IEEE80211_HT_CAP_DSSSCCK40;
sband->ht_cap.ampdu_factor = 0x3;
sband->ht_cap.ampdu_density = 0x6;
memset(&sband->ht_cap.mcs, 0,
sizeof(sband->ht_cap.mcs));
sband->ht_cap.mcs.rx_mask[0] = 0xff;
sband->ht_cap.mcs.rx_mask[1] = 0xff;
sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
}
mac80211_hwsim_sband_capab(sband);
hw->wiphy->bands[band] = sband;
}
/* By default all radios belong to the first group */
data->group = 1;
mutex_init(&data->mutex);
data->netgroup = hwsim_net_get_netgroup(net);
data->wmediumd = hwsim_net_get_wmediumd(net);
/* Enable frame retransmissions for lossy channels */
hw->max_rates = 4;
hw->max_rate_tries = 11;
hw->wiphy->vendor_commands = mac80211_hwsim_vendor_commands;
hw->wiphy->n_vendor_commands =
ARRAY_SIZE(mac80211_hwsim_vendor_commands);
hw->wiphy->vendor_events = mac80211_hwsim_vendor_events;
hw->wiphy->n_vendor_events = ARRAY_SIZE(mac80211_hwsim_vendor_events);
if (param->reg_strict)
hw->wiphy->regulatory_flags |= REGULATORY_STRICT_REG;
if (param->regd) {
data->regd = param->regd;
hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
wiphy_apply_custom_regulatory(hw->wiphy, param->regd);
/* give the regulatory workqueue a chance to run */
schedule_timeout_interruptible(1);
}
if (param->no_vif)
ieee80211_hw_set(hw, NO_AUTO_VIF);
wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CQM_RSSI_LIST);
for (i = 0; i < ARRAY_SIZE(data->link_data); i++) {
hrtimer_init(&data->link_data[i].beacon_timer, CLOCK_MONOTONIC,
HRTIMER_MODE_ABS_SOFT);
data->link_data[i].beacon_timer.function =
mac80211_hwsim_beacon;
data->link_data[i].link_id = i;
}
err = ieee80211_register_hw(hw);
if (err < 0) {
pr_debug("mac80211_hwsim: ieee80211_register_hw failed (%d)\n",
err);
goto failed_hw;
}
wiphy_dbg(hw->wiphy, "hwaddr %pM registered\n", hw->wiphy->perm_addr);
if (param->reg_alpha2) {
data->alpha2[0] = param->reg_alpha2[0];
data->alpha2[1] = param->reg_alpha2[1];
regulatory_hint(hw->wiphy, param->reg_alpha2);
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
data->debugfs = debugfs_create_dir("hwsim", hw->wiphy->debugfsdir);
debugfs_create_file("ps", 0666, data->debugfs, data, &hwsim_fops_ps);
debugfs_create_file("group", 0666, data->debugfs, data,
&hwsim_fops_group);
debugfs_create_file("rx_rssi", 0666, data->debugfs, data,
&hwsim_fops_rx_rssi);
if (!data->use_chanctx)
debugfs_create_file("dfs_simulate_radar", 0222,
data->debugfs,
data, &hwsim_simulate_radar);
spin_lock_bh(&hwsim_radio_lock);
err = rhashtable_insert_fast(&hwsim_radios_rht, &data->rht,
hwsim_rht_params);
if (err < 0) {
if (info) {
GENL_SET_ERR_MSG(info, "perm addr already present");
NL_SET_BAD_ATTR(info->extack,
info->attrs[HWSIM_ATTR_PERM_ADDR]);
}
spin_unlock_bh(&hwsim_radio_lock);
goto failed_final_insert;
}
list_add_tail(&data->list, &hwsim_radios);
hwsim_radios_generation++;
spin_unlock_bh(&hwsim_radio_lock);
hwsim_mcast_new_radio(idx, info, param);
return idx;
failed_final_insert:
debugfs_remove_recursive(data->debugfs);
ieee80211_unregister_hw(data->hw);
failed_hw:
mac80211_hwsim: release driver when ieee80211_register_hw fails The driver is not released when ieee80211_register_hw fails in mac80211_hwsim_create_radio, leading to the access to the unregistered (and possibly freed) device in platform_driver_unregister: [ 0.447547] mac80211_hwsim: ieee80211_register_hw failed (-2) [ 0.448292] ------------[ cut here ]------------ [ 0.448854] WARNING: CPU: 0 PID: 1 at ../include/linux/kref.h:47 kobject_get+0x33/0x50() [ 0.449839] CPU: 0 PID: 1 Comm: swapper Not tainted 3.17.0-00001-gdd46990-dirty #2 [ 0.450813] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.451512] 00000000 00000000 78025e38 7967c6c6 78025e68 7905e09b 7988b480 00000000 [ 0.452579] 00000001 79887d62 0000002f 79170bb3 79170bb3 78397008 79ac9d74 00000001 [ 0.453614] 78025e78 7905e15d 00000009 00000000 78025e84 79170bb3 78397000 78025e8c [ 0.454632] Call Trace: [ 0.454921] [<7967c6c6>] dump_stack+0x16/0x18 [ 0.455453] [<7905e09b>] warn_slowpath_common+0x6b/0x90 [ 0.456067] [<79170bb3>] ? kobject_get+0x33/0x50 [ 0.456612] [<79170bb3>] ? kobject_get+0x33/0x50 [ 0.457155] [<7905e15d>] warn_slowpath_null+0x1d/0x20 [ 0.457748] [<79170bb3>] kobject_get+0x33/0x50 [ 0.458274] [<7925824f>] get_device+0xf/0x20 [ 0.458779] [<7925b5cd>] driver_detach+0x3d/0xa0 [ 0.459331] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.459927] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.460660] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.461248] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.461824] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.462507] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.463161] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.463758] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.464393] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.465001] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.465569] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.466345] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.466972] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.467546] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.468072] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.468658] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.469303] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.469829] ---[ end trace ad8ac403ff8aef5c ]--- [ 0.470509] ------------[ cut here ]------------ [ 0.471047] WARNING: CPU: 0 PID: 1 at ../kernel/locking/lockdep.c:3161 __lock_acquire.isra.22+0x7aa/0xb00() [ 0.472163] DEBUG_LOCKS_WARN_ON(id >= MAX_LOCKDEP_KEYS) [ 0.472774] CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.17.0-00001-gdd46990-dirty #2 [ 0.473815] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.474492] 78025de0 78025de0 78025da0 7967c6c6 78025dd0 7905e09b 79888931 78025dfc [ 0.475515] 00000001 79888a93 00000c59 7907f33a 7907f33a 78028000 fffe9d09 00000000 [ 0.476519] 78025de8 7905e10e 00000009 78025de0 79888931 78025dfc 78025e24 7907f33a [ 0.477523] Call Trace: [ 0.477821] [<7967c6c6>] dump_stack+0x16/0x18 [ 0.478352] [<7905e09b>] warn_slowpath_common+0x6b/0x90 [ 0.478976] [<7907f33a>] ? __lock_acquire.isra.22+0x7aa/0xb00 [ 0.479658] [<7907f33a>] ? __lock_acquire.isra.22+0x7aa/0xb00 [ 0.480417] [<7905e10e>] warn_slowpath_fmt+0x2e/0x30 [ 0.480479] [<7907f33a>] __lock_acquire.isra.22+0x7aa/0xb00 [ 0.480479] [<79078aa5>] ? sched_clock_cpu+0xb5/0xf0 [ 0.480479] [<7907fd06>] lock_acquire+0x56/0x70 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<79682d11>] mutex_lock_nested+0x61/0x2a0 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.480479] [<7925b5e8>] driver_detach+0x58/0xa0 [ 0.480479] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.480479] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.480479] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.480479] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.480479] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.480479] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.480479] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.480479] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.480479] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.480479] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.480479] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.480479] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.480479] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.480479] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.480479] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.480479] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.480479] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.480479] ---[ end trace ad8ac403ff8aef5d ]--- [ 0.495478] BUG: unable to handle kernel paging request at 00200200 [ 0.496257] IP: [<79682de5>] mutex_lock_nested+0x135/0x2a0 [ 0.496923] *pde = 00000000 [ 0.497290] Oops: 0002 [#1] [ 0.497653] CPU: 0 PID: 1 Comm: swapper Tainted: G W 3.17.0-00001-gdd46990-dirty #2 [ 0.498659] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.499321] task: 78028000 ti: 78024000 task.ti: 78024000 [ 0.499955] EIP: 0060:[<79682de5>] EFLAGS: 00010097 CPU: 0 [ 0.500620] EIP is at mutex_lock_nested+0x135/0x2a0 [ 0.501145] EAX: 00200200 EBX: 78397434 ECX: 78397460 EDX: 78025e70 [ 0.501816] ESI: 00000246 EDI: 78028000 EBP: 78025e8c ESP: 78025e54 [ 0.502497] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 0.503076] CR0: 8005003b CR2: 00200200 CR3: 01b9d000 CR4: 00000690 [ 0.503773] Stack: [ 0.503998] 00000000 00000001 00000000 7925b5e8 78397460 7925b5e8 78397474 78397460 [ 0.504944] 00200200 11111111 78025e70 78397000 79ac9d74 00000001 78025ea0 7925b5e8 [ 0.505451] 79ac9d74 fffffffe 00000001 78025ebc 7925a3ff 7a251398 78025ec8 7925bf80 [ 0.505451] Call Trace: [ 0.505451] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.505451] [<7925b5e8>] ? driver_detach+0x58/0xa0 [ 0.505451] [<7925b5e8>] driver_detach+0x58/0xa0 [ 0.505451] [<7925a3ff>] bus_remove_driver+0x8f/0xb0 [ 0.505451] [<7925bf80>] ? class_unregister+0x40/0x80 [ 0.505451] [<7925bad7>] driver_unregister+0x47/0x50 [ 0.505451] [<7925c033>] ? class_destroy+0x13/0x20 [ 0.505451] [<7925d07b>] platform_driver_unregister+0xb/0x10 [ 0.505451] [<79b51ba0>] init_mac80211_hwsim+0x3e8/0x3f9 [ 0.505451] [<79b30c58>] do_one_initcall+0x106/0x1a9 [ 0.505451] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.505451] [<79b517b8>] ? if_spi_init_module+0xac/0xac [ 0.505451] [<79071935>] ? parse_args+0x2f5/0x480 [ 0.505451] [<7906b41e>] ? __usermodehelper_set_disable_depth+0x3e/0x50 [ 0.505451] [<79b30dd9>] kernel_init_freeable+0xde/0x17d [ 0.505451] [<79b304d6>] ? do_early_param+0x7a/0x7a [ 0.505451] [<79677b1b>] kernel_init+0xb/0xe0 [ 0.505451] [<79075f42>] ? schedule_tail+0x12/0x40 [ 0.505451] [<79686580>] ret_from_kernel_thread+0x20/0x30 [ 0.505451] [<79677b10>] ? rest_init+0xc0/0xc0 [ 0.505451] Code: 89 d8 e8 cf 9b 9f ff 8b 4f 04 8d 55 e4 89 d8 e8 72 9d 9f ff 8d 43 2c 89 c1 89 45 d8 8b 43 30 8d 55 e4 89 53 30 89 4d e4 89 45 e8 <89> 10 8b 55 dc 8b 45 e0 89 7d ec e8 db af 9f ff eb 11 90 31 c0 [ 0.505451] EIP: [<79682de5>] mutex_lock_nested+0x135/0x2a0 SS:ESP 0068:78025e54 [ 0.505451] CR2: 0000000000200200 [ 0.505451] ---[ end trace ad8ac403ff8aef5e ]--- [ 0.505451] Kernel panic - not syncing: Fatal exception Fixes: 9ea927748ced ("mac80211_hwsim: Register and bind to driver") Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Junjie Mao <eternal.n08@gmail.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2014-10-28 09:31:47 +08:00
device_release_driver(data->dev);
failed_bind:
device_unregister(data->dev);
failed_drvdata:
ieee80211_free_hw(hw);
failed:
return err;
}
static void hwsim_mcast_del_radio(int id, const char *hwname,
struct genl_info *info)
{
struct sk_buff *skb;
void *data;
int ret;
skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!skb)
return;
data = genlmsg_put(skb, 0, 0, &hwsim_genl_family, 0,
HWSIM_CMD_DEL_RADIO);
if (!data)
goto error;
ret = nla_put_u32(skb, HWSIM_ATTR_RADIO_ID, id);
if (ret < 0)
goto error;
ret = nla_put(skb, HWSIM_ATTR_RADIO_NAME, strlen(hwname),
hwname);
if (ret < 0)
goto error;
genlmsg_end(skb, data);
hwsim_mcast_config_msg(skb, info);
return;
error:
nlmsg_free(skb);
}
static void mac80211_hwsim_del_radio(struct mac80211_hwsim_data *data,
const char *hwname,
struct genl_info *info)
{
hwsim_mcast_del_radio(data->idx, hwname, info);
debugfs_remove_recursive(data->debugfs);
ieee80211_unregister_hw(data->hw);
device_release_driver(data->dev);
device_unregister(data->dev);
ieee80211_free_hw(data->hw);
}
static int mac80211_hwsim_get_radio(struct sk_buff *skb,
struct mac80211_hwsim_data *data,
u32 portid, u32 seq,
struct netlink_callback *cb, int flags)
{
void *hdr;
struct hwsim_new_radio_params param = { };
int res = -EMSGSIZE;
hdr = genlmsg_put(skb, portid, seq, &hwsim_genl_family, flags,
HWSIM_CMD_GET_RADIO);
if (!hdr)
return -EMSGSIZE;
if (cb)
genl_dump_check_consistent(cb, hdr);
if (data->alpha2[0] && data->alpha2[1])
param.reg_alpha2 = data->alpha2;
param.reg_strict = !!(data->hw->wiphy->regulatory_flags &
REGULATORY_STRICT_REG);
param.p2p_device = !!(data->hw->wiphy->interface_modes &
BIT(NL80211_IFTYPE_P2P_DEVICE));
param.use_chanctx = data->use_chanctx;
param.regd = data->regd;
param.channels = data->channels;
param.hwname = wiphy_name(data->hw->wiphy);
res = append_radio_msg(skb, data->idx, &param);
if (res < 0)
goto out_err;
netlink: make nlmsg_end() and genlmsg_end() void Contrary to common expectations for an "int" return, these functions return only a positive value -- if used correctly they cannot even return 0 because the message header will necessarily be in the skb. This makes the very common pattern of if (genlmsg_end(...) < 0) { ... } be a whole bunch of dead code. Many places also simply do return nlmsg_end(...); and the caller is expected to deal with it. This also commonly (at least for me) causes errors, because it is very common to write if (my_function(...)) /* error condition */ and if my_function() does "return nlmsg_end()" this is of course wrong. Additionally, there's not a single place in the kernel that actually needs the message length returned, and if anyone needs it later then it'll be very easy to just use skb->len there. Remove this, and make the functions void. This removes a bunch of dead code as described above. The patch adds lines because I did - return nlmsg_end(...); + nlmsg_end(...); + return 0; I could have preserved all the function's return values by returning skb->len, but instead I've audited all the places calling the affected functions and found that none cared. A few places actually compared the return value with <= 0 in dump functionality, but that could just be changed to < 0 with no change in behaviour, so I opted for the more efficient version. One instance of the error I've made numerous times now is also present in net/phonet/pn_netlink.c in the route_dumpit() function - it didn't check for <0 or <=0 and thus broke out of the loop every single time. I've preserved this since it will (I think) have caused the messages to userspace to be formatted differently with just a single message for every SKB returned to userspace. It's possible that this isn't needed for the tools that actually use this, but I don't even know what they are so couldn't test that changing this behaviour would be acceptable. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-17 05:09:00 +08:00
genlmsg_end(skb, hdr);
return 0;
out_err:
genlmsg_cancel(skb, hdr);
return res;
}
static void mac80211_hwsim_free(void)
{
struct mac80211_hwsim_data *data;
spin_lock_bh(&hwsim_radio_lock);
while ((data = list_first_entry_or_null(&hwsim_radios,
struct mac80211_hwsim_data,
list))) {
list_del(&data->list);
spin_unlock_bh(&hwsim_radio_lock);
mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
NULL);
spin_lock_bh(&hwsim_radio_lock);
}
spin_unlock_bh(&hwsim_radio_lock);
class_destroy(hwsim_class);
}
static const struct net_device_ops hwsim_netdev_ops = {
.ndo_start_xmit = hwsim_mon_xmit,
.ndo_set_mac_address = eth_mac_addr,
.ndo_validate_addr = eth_validate_addr,
};
static void hwsim_mon_setup(struct net_device *dev)
{
u8 addr[ETH_ALEN];
dev->netdev_ops = &hwsim_netdev_ops;
net: Fix inconsistent teardown and release of private netdev state. Network devices can allocate reasources and private memory using netdev_ops->ndo_init(). However, the release of these resources can occur in one of two different places. Either netdev_ops->ndo_uninit() or netdev->destructor(). The decision of which operation frees the resources depends upon whether it is necessary for all netdev refs to be released before it is safe to perform the freeing. netdev_ops->ndo_uninit() presumably can occur right after the NETDEV_UNREGISTER notifier completes and the unicast and multicast address lists are flushed. netdev->destructor(), on the other hand, does not run until the netdev references all go away. Further complicating the situation is that netdev->destructor() almost universally does also a free_netdev(). This creates a problem for the logic in register_netdevice(). Because all callers of register_netdevice() manage the freeing of the netdev, and invoke free_netdev(dev) if register_netdevice() fails. If netdev_ops->ndo_init() succeeds, but something else fails inside of register_netdevice(), it does call ndo_ops->ndo_uninit(). But it is not able to invoke netdev->destructor(). This is because netdev->destructor() will do a free_netdev() and then the caller of register_netdevice() will do the same. However, this means that the resources that would normally be released by netdev->destructor() will not be. Over the years drivers have added local hacks to deal with this, by invoking their destructor parts by hand when register_netdevice() fails. Many drivers do not try to deal with this, and instead we have leaks. Let's close this hole by formalizing the distinction between what private things need to be freed up by netdev->destructor() and whether the driver needs unregister_netdevice() to perform the free_netdev(). netdev->priv_destructor() performs all actions to free up the private resources that used to be freed by netdev->destructor(), except for free_netdev(). netdev->needs_free_netdev is a boolean that indicates whether free_netdev() should be done at the end of unregister_netdevice(). Now, register_netdevice() can sanely release all resources after ndo_ops->ndo_init() succeeds, by invoking both ndo_ops->ndo_uninit() and netdev->priv_destructor(). And at the end of unregister_netdevice(), we invoke netdev->priv_destructor() and optionally call free_netdev(). Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-09 00:52:56 +08:00
dev->needs_free_netdev = true;
ether_setup(dev);
dev->priv_flags |= IFF_NO_QUEUE;
dev->type = ARPHRD_IEEE80211_RADIOTAP;
eth_zero_addr(addr);
addr[0] = 0x12;
eth_hw_addr_set(dev, addr);
}
static struct mac80211_hwsim_data *get_hwsim_data_ref_from_addr(const u8 *addr)
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
{
return rhashtable_lookup_fast(&hwsim_radios_rht,
addr,
hwsim_rht_params);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
}
static void hwsim_register_wmediumd(struct net *net, u32 portid)
{
struct mac80211_hwsim_data *data;
hwsim_net_set_wmediumd(net, portid);
spin_lock_bh(&hwsim_radio_lock);
list_for_each_entry(data, &hwsim_radios, list) {
if (data->netgroup == hwsim_net_get_netgroup(net))
data->wmediumd = portid;
}
spin_unlock_bh(&hwsim_radio_lock);
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
static int hwsim_tx_info_frame_received_nl(struct sk_buff *skb_2,
struct genl_info *info)
{
struct ieee80211_hdr *hdr;
struct mac80211_hwsim_data *data2;
struct ieee80211_tx_info *txi;
struct hwsim_tx_rate *tx_attempts;
u64 ret_skb_cookie;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
struct sk_buff *skb, *tmp;
const u8 *src;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
unsigned int hwsim_flags;
int i;
unsigned long flags;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
bool found = false;
if (!info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER] ||
!info->attrs[HWSIM_ATTR_FLAGS] ||
!info->attrs[HWSIM_ATTR_COOKIE] ||
!info->attrs[HWSIM_ATTR_SIGNAL] ||
!info->attrs[HWSIM_ATTR_TX_INFO])
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
goto out;
src = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_TRANSMITTER]);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
hwsim_flags = nla_get_u32(info->attrs[HWSIM_ATTR_FLAGS]);
ret_skb_cookie = nla_get_u64(info->attrs[HWSIM_ATTR_COOKIE]);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
data2 = get_hwsim_data_ref_from_addr(src);
if (!data2)
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
goto out;
if (!hwsim_virtio_enabled) {
if (hwsim_net_get_netgroup(genl_info_net(info)) !=
data2->netgroup)
goto out;
if (info->snd_portid != data2->wmediumd)
goto out;
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* look for the skb matching the cookie passed back from user */
spin_lock_irqsave(&data2->pending.lock, flags);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
skb_queue_walk_safe(&data2->pending, skb, tmp) {
uintptr_t skb_cookie;
txi = IEEE80211_SKB_CB(skb);
skb_cookie = (uintptr_t)txi->rate_driver_data[0];
if (skb_cookie == ret_skb_cookie) {
__skb_unlink(skb, &data2->pending);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
found = true;
break;
}
}
spin_unlock_irqrestore(&data2->pending.lock, flags);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* not found */
if (!found)
goto out;
/* Tx info received because the frame was broadcasted on user space,
so we get all the necessary info: tx attempts and skb control buff */
tx_attempts = (struct hwsim_tx_rate *)nla_data(
info->attrs[HWSIM_ATTR_TX_INFO]);
/* now send back TX status */
txi = IEEE80211_SKB_CB(skb);
ieee80211_tx_info_clear_status(txi);
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
txi->status.rates[i].idx = tx_attempts[i].idx;
txi->status.rates[i].count = tx_attempts[i].count;
}
txi->status.ack_signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
if (!(hwsim_flags & HWSIM_TX_CTL_NO_ACK) &&
(hwsim_flags & HWSIM_TX_STAT_ACK)) {
if (skb->len >= 16) {
hdr = (struct ieee80211_hdr *) skb->data;
mac80211_hwsim_monitor_ack(data2->channel,
hdr->addr2);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
}
txi->flags |= IEEE80211_TX_STAT_ACK;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
}
if (hwsim_flags & HWSIM_TX_CTL_NO_ACK)
txi->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
ieee80211_tx_status_irqsafe(data2->hw, skb);
return 0;
out:
return -EINVAL;
}
static int hwsim_cloned_frame_received_nl(struct sk_buff *skb_2,
struct genl_info *info)
{
struct mac80211_hwsim_data *data2;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
struct ieee80211_rx_status rx_status;
struct ieee80211_hdr *hdr;
const u8 *dst;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
int frame_data_len;
void *frame_data;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
struct sk_buff *skb = NULL;
struct ieee80211_channel *channel = NULL;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
if (!info->attrs[HWSIM_ATTR_ADDR_RECEIVER] ||
!info->attrs[HWSIM_ATTR_FRAME] ||
!info->attrs[HWSIM_ATTR_RX_RATE] ||
!info->attrs[HWSIM_ATTR_SIGNAL])
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
goto out;
dst = (void *)nla_data(info->attrs[HWSIM_ATTR_ADDR_RECEIVER]);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* Allocate new skb here */
skb = alloc_skb(frame_data_len, GFP_KERNEL);
if (skb == NULL)
goto err;
if (frame_data_len > IEEE80211_MAX_DATA_LEN)
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
goto err;
/* Copy the data */
skb_put_data(skb, frame_data, frame_data_len);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
data2 = get_hwsim_data_ref_from_addr(dst);
if (!data2)
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
goto out;
if (data2->use_chanctx) {
if (data2->tmp_chan)
channel = data2->tmp_chan;
else if (data2->chanctx)
channel = data2->chanctx->def.chan;
} else {
channel = data2->channel;
}
if (!channel)
goto out;
if (!hwsim_virtio_enabled) {
if (hwsim_net_get_netgroup(genl_info_net(info)) !=
data2->netgroup)
goto out;
if (info->snd_portid != data2->wmediumd)
goto out;
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* check if radio is configured properly */
if ((data2->idle && !data2->tmp_chan) || !data2->started)
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
goto out;
/* A frame is received from user space */
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
memset(&rx_status, 0, sizeof(rx_status));
if (info->attrs[HWSIM_ATTR_FREQ]) {
struct tx_iter_data iter_data = {};
/* throw away off-channel packets, but allow both the temporary
* ("hw" scan/remain-on-channel), regular channels and links,
* since the internal datapath also allows this
*/
rx_status.freq = nla_get_u32(info->attrs[HWSIM_ATTR_FREQ]);
iter_data.channel = ieee80211_get_channel(data2->hw->wiphy,
rx_status.freq);
if (!iter_data.channel)
goto out;
mutex_lock(&data2->mutex);
if (!hwsim_chans_compat(iter_data.channel, channel)) {
ieee80211_iterate_active_interfaces_atomic(
data2->hw, IEEE80211_IFACE_ITER_NORMAL,
mac80211_hwsim_tx_iter, &iter_data);
if (!iter_data.receive) {
mutex_unlock(&data2->mutex);
goto out;
}
}
mutex_unlock(&data2->mutex);
} else {
rx_status.freq = channel->center_freq;
}
rx_status.band = channel->band;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
rx_status.rate_idx = nla_get_u32(info->attrs[HWSIM_ATTR_RX_RATE]);
rx_status.signal = nla_get_u32(info->attrs[HWSIM_ATTR_SIGNAL]);
hdr = (void *)skb->data;
if (ieee80211_is_beacon(hdr->frame_control) ||
ieee80211_is_probe_resp(hdr->frame_control))
rx_status.boottime_ns = ktime_get_boottime_ns();
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
data2->rx_pkts++;
data2->rx_bytes += skb->len;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
ieee80211_rx_irqsafe(data2->hw, skb);
return 0;
err:
pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
out:
dev_kfree_skb(skb);
return -EINVAL;
}
static int hwsim_register_received_nl(struct sk_buff *skb_2,
struct genl_info *info)
{
struct net *net = genl_info_net(info);
struct mac80211_hwsim_data *data;
int chans = 1;
spin_lock_bh(&hwsim_radio_lock);
list_for_each_entry(data, &hwsim_radios, list)
chans = max(chans, data->channels);
spin_unlock_bh(&hwsim_radio_lock);
/* In the future we should revise the userspace API and allow it
* to set a flag that it does support multi-channel, then we can
* let this pass conditionally on the flag.
* For current userspace, prohibit it since it won't work right.
*/
if (chans > 1)
return -EOPNOTSUPP;
if (hwsim_net_get_wmediumd(net))
return -EBUSY;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
hwsim_register_wmediumd(net, info->snd_portid);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
pr_debug("mac80211_hwsim: received a REGISTER, "
"switching to wmediumd mode with pid %d\n", info->snd_portid);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
return 0;
}
/* ensures ciphers only include ciphers listed in 'hwsim_ciphers' array */
static bool hwsim_known_ciphers(const u32 *ciphers, int n_ciphers)
{
int i;
for (i = 0; i < n_ciphers; i++) {
int j;
int found = 0;
for (j = 0; j < ARRAY_SIZE(hwsim_ciphers); j++) {
if (ciphers[i] == hwsim_ciphers[j]) {
found = 1;
break;
}
}
if (!found)
return false;
}
return true;
}
static int hwsim_new_radio_nl(struct sk_buff *msg, struct genl_info *info)
{
struct hwsim_new_radio_params param = { 0 };
const char *hwname = NULL;
int ret;
param.reg_strict = info->attrs[HWSIM_ATTR_REG_STRICT_REG];
param.p2p_device = info->attrs[HWSIM_ATTR_SUPPORT_P2P_DEVICE];
param.channels = channels;
param.destroy_on_close =
info->attrs[HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE];
if (info->attrs[HWSIM_ATTR_CHANNELS])
param.channels = nla_get_u32(info->attrs[HWSIM_ATTR_CHANNELS]);
if (param.channels < 1) {
GENL_SET_ERR_MSG(info, "must have at least one channel");
return -EINVAL;
}
if (info->attrs[HWSIM_ATTR_NO_VIF])
param.no_vif = true;
if (info->attrs[HWSIM_ATTR_USE_CHANCTX])
param.use_chanctx = true;
else
param.use_chanctx = (param.channels > 1);
if (info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2])
param.reg_alpha2 =
nla_data(info->attrs[HWSIM_ATTR_REG_HINT_ALPHA2]);
if (info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]) {
u32 idx = nla_get_u32(info->attrs[HWSIM_ATTR_REG_CUSTOM_REG]);
if (idx >= ARRAY_SIZE(hwsim_world_regdom_custom))
return -EINVAL;
idx = array_index_nospec(idx,
ARRAY_SIZE(hwsim_world_regdom_custom));
param.regd = hwsim_world_regdom_custom[idx];
}
if (info->attrs[HWSIM_ATTR_PERM_ADDR]) {
if (!is_valid_ether_addr(
nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]))) {
GENL_SET_ERR_MSG(info,"MAC is no valid source addr");
NL_SET_BAD_ATTR(info->extack,
info->attrs[HWSIM_ATTR_PERM_ADDR]);
return -EINVAL;
}
param.perm_addr = nla_data(info->attrs[HWSIM_ATTR_PERM_ADDR]);
}
if (info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]) {
param.iftypes =
nla_get_u32(info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT]);
if (param.iftypes & ~HWSIM_IFTYPE_SUPPORT_MASK) {
NL_SET_ERR_MSG_ATTR(info->extack,
info->attrs[HWSIM_ATTR_IFTYPE_SUPPORT],
"cannot support more iftypes than kernel");
return -EINVAL;
}
} else {
param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
}
/* ensure both flag and iftype support is honored */
if (param.p2p_device ||
param.iftypes & BIT(NL80211_IFTYPE_P2P_DEVICE)) {
param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
param.p2p_device = true;
}
if (info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]) {
u32 len = nla_len(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
param.ciphers =
nla_data(info->attrs[HWSIM_ATTR_CIPHER_SUPPORT]);
if (len % sizeof(u32)) {
NL_SET_ERR_MSG_ATTR(info->extack,
info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
"bad cipher list length");
return -EINVAL;
}
param.n_ciphers = len / sizeof(u32);
if (param.n_ciphers > ARRAY_SIZE(hwsim_ciphers)) {
NL_SET_ERR_MSG_ATTR(info->extack,
info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
"too many ciphers specified");
return -EINVAL;
}
if (!hwsim_known_ciphers(param.ciphers, param.n_ciphers)) {
NL_SET_ERR_MSG_ATTR(info->extack,
info->attrs[HWSIM_ATTR_CIPHER_SUPPORT],
"unsupported ciphers specified");
return -EINVAL;
}
}
param.mlo = info->attrs[HWSIM_ATTR_MLO_SUPPORT];
if (param.mlo)
param.use_chanctx = true;
if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
GFP_KERNEL);
if (!hwname)
return -ENOMEM;
param.hwname = hwname;
}
ret = mac80211_hwsim_new_radio(info, &param);
kfree(hwname);
return ret;
}
static int hwsim_del_radio_nl(struct sk_buff *msg, struct genl_info *info)
{
struct mac80211_hwsim_data *data;
s64 idx = -1;
const char *hwname = NULL;
if (info->attrs[HWSIM_ATTR_RADIO_ID]) {
idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
} else if (info->attrs[HWSIM_ATTR_RADIO_NAME]) {
hwname = kstrndup((char *)nla_data(info->attrs[HWSIM_ATTR_RADIO_NAME]),
nla_len(info->attrs[HWSIM_ATTR_RADIO_NAME]),
GFP_KERNEL);
if (!hwname)
return -ENOMEM;
} else
return -EINVAL;
spin_lock_bh(&hwsim_radio_lock);
list_for_each_entry(data, &hwsim_radios, list) {
if (idx >= 0) {
if (data->idx != idx)
continue;
} else {
if (!hwname ||
strcmp(hwname, wiphy_name(data->hw->wiphy)))
continue;
}
if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
continue;
list_del(&data->list);
rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
hwsim_rht_params);
hwsim_radios_generation++;
spin_unlock_bh(&hwsim_radio_lock);
mac80211_hwsim_del_radio(data, wiphy_name(data->hw->wiphy),
info);
kfree(hwname);
return 0;
}
spin_unlock_bh(&hwsim_radio_lock);
kfree(hwname);
return -ENODEV;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
}
static int hwsim_get_radio_nl(struct sk_buff *msg, struct genl_info *info)
{
struct mac80211_hwsim_data *data;
struct sk_buff *skb;
int idx, res = -ENODEV;
if (!info->attrs[HWSIM_ATTR_RADIO_ID])
return -EINVAL;
idx = nla_get_u32(info->attrs[HWSIM_ATTR_RADIO_ID]);
spin_lock_bh(&hwsim_radio_lock);
list_for_each_entry(data, &hwsim_radios, list) {
if (data->idx != idx)
continue;
if (!net_eq(wiphy_net(data->hw->wiphy), genl_info_net(info)))
continue;
skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
if (!skb) {
res = -ENOMEM;
goto out_err;
}
res = mac80211_hwsim_get_radio(skb, data, info->snd_portid,
info->snd_seq, NULL, 0);
if (res < 0) {
nlmsg_free(skb);
goto out_err;
}
res = genlmsg_reply(skb, info);
break;
}
out_err:
spin_unlock_bh(&hwsim_radio_lock);
return res;
}
static int hwsim_dump_radio_nl(struct sk_buff *skb,
struct netlink_callback *cb)
{
int last_idx = cb->args[0] - 1;
struct mac80211_hwsim_data *data = NULL;
int res = 0;
void *hdr;
spin_lock_bh(&hwsim_radio_lock);
cb->seq = hwsim_radios_generation;
if (last_idx >= hwsim_radio_idx-1)
goto done;
list_for_each_entry(data, &hwsim_radios, list) {
if (data->idx <= last_idx)
continue;
if (!net_eq(wiphy_net(data->hw->wiphy), sock_net(skb->sk)))
continue;
res = mac80211_hwsim_get_radio(skb, data,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, cb,
NLM_F_MULTI);
if (res < 0)
break;
last_idx = data->idx;
}
cb->args[0] = last_idx + 1;
/* list changed, but no new element sent, set interrupted flag */
if (skb->len == 0 && cb->prev_seq && cb->seq != cb->prev_seq) {
hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, &hwsim_genl_family,
NLM_F_MULTI, HWSIM_CMD_GET_RADIO);
if (hdr) {
genl_dump_check_consistent(cb, hdr);
genlmsg_end(skb, hdr);
} else {
res = -EMSGSIZE;
}
}
done:
spin_unlock_bh(&hwsim_radio_lock);
return res ?: skb->len;
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
/* Generic Netlink operations array */
static const struct genl_small_ops hwsim_ops[] = {
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
{
.cmd = HWSIM_CMD_REGISTER,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
.doit = hwsim_register_received_nl,
.flags = GENL_UNS_ADMIN_PERM,
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
},
{
.cmd = HWSIM_CMD_FRAME,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
.doit = hwsim_cloned_frame_received_nl,
},
{
.cmd = HWSIM_CMD_TX_INFO_FRAME,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
.doit = hwsim_tx_info_frame_received_nl,
},
{
.cmd = HWSIM_CMD_NEW_RADIO,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = hwsim_new_radio_nl,
.flags = GENL_UNS_ADMIN_PERM,
},
{
.cmd = HWSIM_CMD_DEL_RADIO,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = hwsim_del_radio_nl,
.flags = GENL_UNS_ADMIN_PERM,
},
{
.cmd = HWSIM_CMD_GET_RADIO,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = hwsim_get_radio_nl,
.dumpit = hwsim_dump_radio_nl,
},
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
};
static struct genl_family hwsim_genl_family __ro_after_init = {
.name = "MAC80211_HWSIM",
.version = 1,
.maxattr = HWSIM_ATTR_MAX,
.policy = hwsim_genl_policy,
.netnsok = true,
.module = THIS_MODULE,
.small_ops = hwsim_ops,
.n_small_ops = ARRAY_SIZE(hwsim_ops),
.mcgrps = hwsim_mcgrps,
.n_mcgrps = ARRAY_SIZE(hwsim_mcgrps),
};
static void remove_user_radios(u32 portid)
{
struct mac80211_hwsim_data *entry, *tmp;
LIST_HEAD(list);
spin_lock_bh(&hwsim_radio_lock);
list_for_each_entry_safe(entry, tmp, &hwsim_radios, list) {
if (entry->destroy_on_close && entry->portid == portid) {
list_move(&entry->list, &list);
rhashtable_remove_fast(&hwsim_radios_rht, &entry->rht,
hwsim_rht_params);
hwsim_radios_generation++;
}
}
spin_unlock_bh(&hwsim_radio_lock);
list_for_each_entry_safe(entry, tmp, &list, list) {
list_del(&entry->list);
mac80211_hwsim_del_radio(entry, wiphy_name(entry->hw->wiphy),
NULL);
}
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
static int mac80211_hwsim_netlink_notify(struct notifier_block *nb,
unsigned long state,
void *_notify)
{
struct netlink_notify *notify = _notify;
if (state != NETLINK_URELEASE)
return NOTIFY_DONE;
remove_user_radios(notify->portid);
if (notify->portid == hwsim_net_get_wmediumd(notify->net)) {
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
printk(KERN_INFO "mac80211_hwsim: wmediumd released netlink"
" socket, switching to perfect channel medium\n");
hwsim_register_wmediumd(notify->net, 0);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
}
return NOTIFY_DONE;
}
static struct notifier_block hwsim_netlink_notifier = {
.notifier_call = mac80211_hwsim_netlink_notify,
};
static int __init hwsim_init_netlink(void)
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
{
int rc;
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
printk(KERN_INFO "mac80211_hwsim: initializing netlink\n");
rc = genl_register_family(&hwsim_genl_family);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
if (rc)
goto failure;
rc = netlink_register_notifier(&hwsim_netlink_notifier);
if (rc) {
genl_unregister_family(&hwsim_genl_family);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
goto failure;
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
return 0;
failure:
pr_debug("mac80211_hwsim: error occurred in %s\n", __func__);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
return -EINVAL;
}
static __net_init int hwsim_init_net(struct net *net)
{
return hwsim_net_set_netgroup(net);
}
static void __net_exit hwsim_exit_net(struct net *net)
{
struct mac80211_hwsim_data *data, *tmp;
LIST_HEAD(list);
spin_lock_bh(&hwsim_radio_lock);
list_for_each_entry_safe(data, tmp, &hwsim_radios, list) {
if (!net_eq(wiphy_net(data->hw->wiphy), net))
continue;
/* Radios created in init_net are returned to init_net. */
if (data->netgroup == hwsim_net_get_netgroup(&init_net))
continue;
list_move(&data->list, &list);
rhashtable_remove_fast(&hwsim_radios_rht, &data->rht,
hwsim_rht_params);
hwsim_radios_generation++;
}
spin_unlock_bh(&hwsim_radio_lock);
list_for_each_entry_safe(data, tmp, &list, list) {
list_del(&data->list);
mac80211_hwsim_del_radio(data,
wiphy_name(data->hw->wiphy),
NULL);
}
ida_free(&hwsim_netgroup_ida, hwsim_net_get_netgroup(net));
}
static struct pernet_operations hwsim_net_ops = {
.init = hwsim_init_net,
.exit = hwsim_exit_net,
.id = &hwsim_net_id,
.size = sizeof(struct hwsim_net),
};
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
static void hwsim_exit_netlink(void)
{
/* unregister the notifier */
netlink_unregister_notifier(&hwsim_netlink_notifier);
/* unregister the family */
genl_unregister_family(&hwsim_genl_family);
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
}
#if IS_REACHABLE(CONFIG_VIRTIO)
static void hwsim_virtio_tx_done(struct virtqueue *vq)
{
unsigned int len;
struct sk_buff *skb;
unsigned long flags;
spin_lock_irqsave(&hwsim_virtio_lock, flags);
while ((skb = virtqueue_get_buf(vq, &len)))
nlmsg_free(skb);
spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
}
static int hwsim_virtio_handle_cmd(struct sk_buff *skb)
{
struct nlmsghdr *nlh;
struct genlmsghdr *gnlh;
struct nlattr *tb[HWSIM_ATTR_MAX + 1];
struct genl_info info = {};
int err;
nlh = nlmsg_hdr(skb);
gnlh = nlmsg_data(nlh);
err = genlmsg_parse(nlh, &hwsim_genl_family, tb, HWSIM_ATTR_MAX,
hwsim_genl_policy, NULL);
if (err) {
pr_err_ratelimited("hwsim: genlmsg_parse returned %d\n", err);
return err;
}
info.attrs = tb;
switch (gnlh->cmd) {
case HWSIM_CMD_FRAME:
hwsim_cloned_frame_received_nl(skb, &info);
break;
case HWSIM_CMD_TX_INFO_FRAME:
hwsim_tx_info_frame_received_nl(skb, &info);
break;
default:
pr_err_ratelimited("hwsim: invalid cmd: %d\n", gnlh->cmd);
return -EPROTO;
}
return 0;
}
static void hwsim_virtio_rx_work(struct work_struct *work)
{
struct virtqueue *vq;
unsigned int len;
struct sk_buff *skb;
struct scatterlist sg[1];
int err;
unsigned long flags;
spin_lock_irqsave(&hwsim_virtio_lock, flags);
if (!hwsim_virtio_enabled)
goto out_unlock;
skb = virtqueue_get_buf(hwsim_vqs[HWSIM_VQ_RX], &len);
if (!skb)
goto out_unlock;
spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
skb->data = skb->head;
skb_set_tail_pointer(skb, len);
hwsim_virtio_handle_cmd(skb);
spin_lock_irqsave(&hwsim_virtio_lock, flags);
if (!hwsim_virtio_enabled) {
nlmsg_free(skb);
goto out_unlock;
}
vq = hwsim_vqs[HWSIM_VQ_RX];
sg_init_one(sg, skb->head, skb_end_offset(skb));
err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_ATOMIC);
if (WARN(err, "virtqueue_add_inbuf returned %d\n", err))
nlmsg_free(skb);
else
virtqueue_kick(vq);
schedule_work(&hwsim_virtio_rx);
out_unlock:
spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
}
static void hwsim_virtio_rx_done(struct virtqueue *vq)
{
schedule_work(&hwsim_virtio_rx);
}
static int init_vqs(struct virtio_device *vdev)
{
vq_callback_t *callbacks[HWSIM_NUM_VQS] = {
[HWSIM_VQ_TX] = hwsim_virtio_tx_done,
[HWSIM_VQ_RX] = hwsim_virtio_rx_done,
};
const char *names[HWSIM_NUM_VQS] = {
[HWSIM_VQ_TX] = "tx",
[HWSIM_VQ_RX] = "rx",
};
return virtio_find_vqs(vdev, HWSIM_NUM_VQS,
hwsim_vqs, callbacks, names, NULL);
}
static int fill_vq(struct virtqueue *vq)
{
int i, err;
struct sk_buff *skb;
struct scatterlist sg[1];
for (i = 0; i < virtqueue_get_vring_size(vq); i++) {
skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!skb)
return -ENOMEM;
sg_init_one(sg, skb->head, skb_end_offset(skb));
err = virtqueue_add_inbuf(vq, sg, 1, skb, GFP_KERNEL);
if (err) {
nlmsg_free(skb);
return err;
}
}
virtqueue_kick(vq);
return 0;
}
static void remove_vqs(struct virtio_device *vdev)
{
int i;
virtio_reset_device(vdev);
for (i = 0; i < ARRAY_SIZE(hwsim_vqs); i++) {
struct virtqueue *vq = hwsim_vqs[i];
struct sk_buff *skb;
while ((skb = virtqueue_detach_unused_buf(vq)))
nlmsg_free(skb);
}
vdev->config->del_vqs(vdev);
}
static int hwsim_virtio_probe(struct virtio_device *vdev)
{
int err;
unsigned long flags;
spin_lock_irqsave(&hwsim_virtio_lock, flags);
if (hwsim_virtio_enabled) {
spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
return -EEXIST;
}
spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
err = init_vqs(vdev);
if (err)
return err;
virtio_device_ready(vdev);
err = fill_vq(hwsim_vqs[HWSIM_VQ_RX]);
if (err)
goto out_remove;
spin_lock_irqsave(&hwsim_virtio_lock, flags);
hwsim_virtio_enabled = true;
spin_unlock_irqrestore(&hwsim_virtio_lock, flags);
schedule_work(&hwsim_virtio_rx);
return 0;
out_remove:
remove_vqs(vdev);
return err;
}
static void hwsim_virtio_remove(struct virtio_device *vdev)
{
hwsim_virtio_enabled = false;
cancel_work_sync(&hwsim_virtio_rx);
remove_vqs(vdev);
}
/* MAC80211_HWSIM virtio device id table */
static const struct virtio_device_id id_table[] = {
{ VIRTIO_ID_MAC80211_HWSIM, VIRTIO_DEV_ANY_ID },
{ 0 }
};
MODULE_DEVICE_TABLE(virtio, id_table);
static struct virtio_driver virtio_hwsim = {
.driver.name = KBUILD_MODNAME,
.driver.owner = THIS_MODULE,
.id_table = id_table,
.probe = hwsim_virtio_probe,
.remove = hwsim_virtio_remove,
};
static int hwsim_register_virtio_driver(void)
{
return register_virtio_driver(&virtio_hwsim);
}
static void hwsim_unregister_virtio_driver(void)
{
unregister_virtio_driver(&virtio_hwsim);
}
#else
static inline int hwsim_register_virtio_driver(void)
{
return 0;
}
static inline void hwsim_unregister_virtio_driver(void)
{
}
#endif
static int __init init_mac80211_hwsim(void)
{
int i, err;
if (radios < 0 || radios > 100)
return -EINVAL;
if (channels < 1)
return -EINVAL;
err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
if (err)
return err;
err = register_pernet_device(&hwsim_net_ops);
if (err)
goto out_free_rht;
err = platform_driver_register(&mac80211_hwsim_driver);
if (err)
goto out_unregister_pernet;
err = hwsim_init_netlink();
if (err)
goto out_unregister_driver;
err = hwsim_register_virtio_driver();
if (err)
goto out_exit_netlink;
hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim");
if (IS_ERR(hwsim_class)) {
err = PTR_ERR(hwsim_class);
goto out_exit_virtio;
}
hwsim_init_s1g_channels(hwsim_channels_s1g);
for (i = 0; i < radios; i++) {
struct hwsim_new_radio_params param = { 0 };
param.channels = channels;
switch (regtest) {
case HWSIM_REGTEST_DIFF_COUNTRY:
if (i < ARRAY_SIZE(hwsim_alpha2s))
param.reg_alpha2 = hwsim_alpha2s[i];
break;
case HWSIM_REGTEST_DRIVER_REG_FOLLOW:
if (!i)
param.reg_alpha2 = hwsim_alpha2s[0];
break;
case HWSIM_REGTEST_STRICT_ALL:
param.reg_strict = true;
fallthrough;
case HWSIM_REGTEST_DRIVER_REG_ALL:
param.reg_alpha2 = hwsim_alpha2s[0];
break;
case HWSIM_REGTEST_WORLD_ROAM:
if (i == 0)
param.regd = &hwsim_world_regdom_custom_01;
break;
case HWSIM_REGTEST_CUSTOM_WORLD:
param.regd = &hwsim_world_regdom_custom_01;
break;
case HWSIM_REGTEST_CUSTOM_WORLD_2:
if (i == 0)
param.regd = &hwsim_world_regdom_custom_01;
else if (i == 1)
param.regd = &hwsim_world_regdom_custom_02;
break;
case HWSIM_REGTEST_STRICT_FOLLOW:
if (i == 0) {
param.reg_strict = true;
param.reg_alpha2 = hwsim_alpha2s[0];
}
break;
case HWSIM_REGTEST_STRICT_AND_DRIVER_REG:
if (i == 0) {
param.reg_strict = true;
param.reg_alpha2 = hwsim_alpha2s[0];
} else if (i == 1) {
param.reg_alpha2 = hwsim_alpha2s[1];
}
break;
case HWSIM_REGTEST_ALL:
switch (i) {
case 0:
param.regd = &hwsim_world_regdom_custom_01;
break;
case 1:
param.regd = &hwsim_world_regdom_custom_02;
break;
case 2:
param.reg_alpha2 = hwsim_alpha2s[0];
break;
case 3:
param.reg_alpha2 = hwsim_alpha2s[1];
break;
case 4:
param.reg_strict = true;
param.reg_alpha2 = hwsim_alpha2s[2];
break;
}
break;
default:
break;
}
param.p2p_device = support_p2p_device;
param.mlo = mlo;
param.use_chanctx = channels > 1 || mlo;
param.iftypes = HWSIM_IFTYPE_SUPPORT_MASK;
if (param.p2p_device)
param.iftypes |= BIT(NL80211_IFTYPE_P2P_DEVICE);
err = mac80211_hwsim_new_radio(NULL, &param);
if (err < 0)
goto out_free_radios;
}
hwsim_mon = alloc_netdev(0, "hwsim%d", NET_NAME_UNKNOWN,
hwsim_mon_setup);
if (hwsim_mon == NULL) {
err = -ENOMEM;
goto out_free_radios;
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
rtnl_lock();
err = dev_alloc_name(hwsim_mon, hwsim_mon->name);
if (err < 0) {
rtnl_unlock();
goto out_free_mon;
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
err = register_netdevice(hwsim_mon);
if (err < 0) {
rtnl_unlock();
goto out_free_mon;
}
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
rtnl_unlock();
return 0;
out_free_mon:
free_netdev(hwsim_mon);
out_free_radios:
mac80211_hwsim_free();
out_exit_virtio:
hwsim_unregister_virtio_driver();
out_exit_netlink:
hwsim_exit_netlink();
out_unregister_driver:
platform_driver_unregister(&mac80211_hwsim_driver);
out_unregister_pernet:
unregister_pernet_device(&hwsim_net_ops);
out_free_rht:
rhashtable_destroy(&hwsim_radios_rht);
return err;
}
module_init(init_mac80211_hwsim);
static void __exit exit_mac80211_hwsim(void)
{
pr_debug("mac80211_hwsim: unregister radios\n");
hwsim_unregister_virtio_driver();
mac80211_hwsim driver support userspace frame tx/rx This patch adds to mac80211_hwsim the capability to send traffic via userspace. Frame exchange between kernel and user spaces is done through generic netlink communication protocol. A new generic netlink family MAC80211_HWSIM is proposed, this family contains three basic commands HWSIM_CMD_REGISTER, which is the command used to register a new traffic listener, HWSIM_CMD_FRAME, to exchange the frames from kernel to user and vice-versa, and HWSIM_CMD_TX_INFO_FRAME which returns from user all the information about retransmissions, rates, rx signal, and so on. How it works: Once the driver is loaded the MAC80211_HWSIM family will be registered. In the absence of userspace daemon, the driver itselfs implements a perfect wireless medium as it did in the past. When a daemon sends a HWSIM_CMD_REGISTER command, the module stores the application PID, and from this moment all frames will be sent to the registered daemon. The user space application will be in charge of process/forward all frames broadcast by any mac80211_hwsim radio. If the user application is stopped, the kernel module will detect the release of the socket and it will switch back to in-kernel perfect channel simulation. The userspace daemon must be waiting for incoming HWSIM_CMD_FRAME commands sent from kernel, for each HWSIM_CMD_FRAME command the application will try to broadcast this frame to all mac80211_hwsim radios, however the application may decide to forward/drop this frame. In the case of forwarding the frame, a new HWSIM_CMD_FRAME command will be created, all necessary attributes will be populated and the frame will be sent back to the kernel. Also after the frame broadcast phase, a HWSIM_CMD_TX_INFO_FRAME command will be sent from userspace to kernel, this command contains all the information regarding the transmission, such as number of tries, rates, ack signal, etc. You can find the actual implementation of wireless mediumd daemon (wmediumd) at: * Last version tarball: https://github.com/jlopex/cozybit/tarball/master * Or visiting my github tree: https://github.com/jlopex/cozybit/tree Signed-off-by: Javier Lopez <jlopex@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-01 17:26:13 +08:00
hwsim_exit_netlink();
mac80211_hwsim_free();
rhashtable_destroy(&hwsim_radios_rht);
unregister_netdev(hwsim_mon);
platform_driver_unregister(&mac80211_hwsim_driver);
unregister_pernet_device(&hwsim_net_ops);
}
module_exit(exit_mac80211_hwsim);