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mac80211: split off mesh handling entirely 

This patch splits off mesh handling from the STA/IBSS.
Unfortunately it increases mesh code size a bit, but I
think it makes things clearer. The patch also reduces
per-interface run-time memory usage.

Also clean up a few places where ifdef is not required.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2008-09-11 00:01:49 +02:00 committed by John W. Linville
parent 7c95069522
commit 472dbc45dc
15 changed files with 456 additions and 294 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/mac80211/cfg.c
View File

@ -116,9 +116,9 @@ static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex,
return ret;
if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len)
ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
params->mesh_id_len,
params->mesh_id);
ieee80211_sdata_set_mesh_id(sdata,
params->mesh_id_len,
params->mesh_id);
if (sdata->vif.type != IEEE80211_IF_TYPE_MNTR || !flags)
return 0;

38
net/mac80211/debugfs_netdev.c
View File

@ -207,37 +207,37 @@ IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
#ifdef CONFIG_MAC80211_MESH
/* Mesh stats attributes */
IEEE80211_IF_FILE(fwded_frames, u.sta.mshstats.fwded_frames, DEC);
IEEE80211_IF_FILE(dropped_frames_ttl, u.sta.mshstats.dropped_frames_ttl, DEC);
IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
IEEE80211_IF_FILE(dropped_frames_no_route,
u.sta.mshstats.dropped_frames_no_route, DEC);
IEEE80211_IF_FILE(estab_plinks, u.sta.mshstats.estab_plinks, ATOMIC);
u.mesh.mshstats.dropped_frames_no_route, DEC);
IEEE80211_IF_FILE(estab_plinks, u.mesh.mshstats.estab_plinks, ATOMIC);
/* Mesh parameters */
IEEE80211_IF_WFILE(dot11MeshMaxRetries,
u.sta.mshcfg.dot11MeshMaxRetries, DEC, u8);
u.mesh.mshcfg.dot11MeshMaxRetries, DEC, u8);
IEEE80211_IF_WFILE(dot11MeshRetryTimeout,
u.sta.mshcfg.dot11MeshRetryTimeout, DEC, u16);
u.mesh.mshcfg.dot11MeshRetryTimeout, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshConfirmTimeout,
u.sta.mshcfg.dot11MeshConfirmTimeout, DEC, u16);
u.mesh.mshcfg.dot11MeshConfirmTimeout, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHoldingTimeout,
u.sta.mshcfg.dot11MeshHoldingTimeout, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshTTL, u.sta.mshcfg.dot11MeshTTL, DEC, u8);
IEEE80211_IF_WFILE(auto_open_plinks, u.sta.mshcfg.auto_open_plinks, DEC, u8);
u.mesh.mshcfg.dot11MeshHoldingTimeout, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshTTL, u.mesh.mshcfg.dot11MeshTTL, DEC, u8);
IEEE80211_IF_WFILE(auto_open_plinks, u.mesh.mshcfg.auto_open_plinks, DEC, u8);
IEEE80211_IF_WFILE(dot11MeshMaxPeerLinks,
u.sta.mshcfg.dot11MeshMaxPeerLinks, DEC, u16);
u.mesh.mshcfg.dot11MeshMaxPeerLinks, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHWMPactivePathTimeout,
u.sta.mshcfg.dot11MeshHWMPactivePathTimeout, DEC, u32);
u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout, DEC, u32);
IEEE80211_IF_WFILE(dot11MeshHWMPpreqMinInterval,
u.sta.mshcfg.dot11MeshHWMPpreqMinInterval, DEC, u16);
u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHWMPnetDiameterTraversalTime,
u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC, u16);
u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime, DEC, u16);
IEEE80211_IF_WFILE(dot11MeshHWMPmaxPREQretries,
u.sta.mshcfg.dot11MeshHWMPmaxPREQretries, DEC, u8);
u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries, DEC, u8);
IEEE80211_IF_WFILE(path_refresh_time,
u.sta.mshcfg.path_refresh_time, DEC, u32);
u.mesh.mshcfg.path_refresh_time, DEC, u32);
IEEE80211_IF_WFILE(min_discovery_timeout,
u.sta.mshcfg.min_discovery_timeout, DEC, u16);
u.mesh.mshcfg.min_discovery_timeout, DEC, u16);
#endif
@ -350,7 +350,7 @@ static void add_files(struct ieee80211_sub_if_data *sdata)
add_mesh_stats(sdata);
add_mesh_config(sdata);
#endif
/* fall through */
break;
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
add_sta_files(sdata);
@ -487,7 +487,7 @@ static void del_files(struct ieee80211_sub_if_data *sdata)
del_mesh_stats(sdata);
del_mesh_config(sdata);
#endif
/* fall through */
break;
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
del_sta_files(sdata);

101
net/mac80211/ieee80211_i.h
View File

@ -308,7 +308,6 @@ enum ieee80211_sta_mlme_state {
IEEE80211_STA_MLME_ASSOCIATED,
IEEE80211_STA_MLME_IBSS_SEARCH,
IEEE80211_STA_MLME_IBSS_JOINED,
IEEE80211_STA_MLME_MESH_UP
};
/* bitfield of allowed auth algs */
@ -325,34 +324,6 @@ struct ieee80211_if_sta {
size_t ssid_len;
u8 scan_ssid[IEEE80211_MAX_SSID_LEN];
size_t scan_ssid_len;
#ifdef CONFIG_MAC80211_MESH
struct timer_list mesh_path_timer;
u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
size_t mesh_id_len;
/* Active Path Selection Protocol Identifier */
u8 mesh_pp_id[4];
/* Active Path Selection Metric Identifier */
u8 mesh_pm_id[4];
/* Congestion Control Mode Identifier */
u8 mesh_cc_id[4];
/* Local mesh Destination Sequence Number */
u32 dsn;
/* Last used PREQ ID */
u32 preq_id;
atomic_t mpaths;
/* Timestamp of last DSN update */
unsigned long last_dsn_update;
/* Timestamp of last DSN sent */
unsigned long last_preq;
struct mesh_rmc *rmc;
spinlock_t mesh_preq_queue_lock;
struct mesh_preq_queue preq_queue;
int preq_queue_len;
struct mesh_stats mshstats;
struct mesh_config mshcfg;
u32 mesh_seqnum;
bool accepting_plinks;
#endif
u16 aid;
u16 ap_capab, capab;
u8 *extra_ie; /* to be added to the end of AssocReq */
@ -387,20 +358,47 @@ struct ieee80211_if_sta {
int num_beacons; /* number of TXed beacon frames by this STA */
};
static inline void ieee80211_if_sta_set_mesh_id(struct ieee80211_if_sta *ifsta,
u8 mesh_id_len, u8 *mesh_id)
{
#ifdef CONFIG_MAC80211_MESH
ifsta->mesh_id_len = mesh_id_len;
memcpy(ifsta->mesh_id, mesh_id, mesh_id_len);
#endif
}
struct ieee80211_if_mesh {
struct work_struct work;
struct timer_list housekeeping_timer;
struct timer_list mesh_path_timer;
struct sk_buff_head skb_queue;
bool housekeeping;
u8 mesh_id[IEEE80211_MAX_MESH_ID_LEN];
size_t mesh_id_len;
/* Active Path Selection Protocol Identifier */
u8 mesh_pp_id[4];
/* Active Path Selection Metric Identifier */
u8 mesh_pm_id[4];
/* Congestion Control Mode Identifier */
u8 mesh_cc_id[4];
/* Local mesh Destination Sequence Number */
u32 dsn;
/* Last used PREQ ID */
u32 preq_id;
atomic_t mpaths;
/* Timestamp of last DSN update */
unsigned long last_dsn_update;
/* Timestamp of last DSN sent */
unsigned long last_preq;
struct mesh_rmc *rmc;
spinlock_t mesh_preq_queue_lock;
struct mesh_preq_queue preq_queue;
int preq_queue_len;
struct mesh_stats mshstats;
struct mesh_config mshcfg;
u32 mesh_seqnum;
bool accepting_plinks;
int num_beacons;
};
#ifdef CONFIG_MAC80211_MESH
#define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
do { (sta)->mshstats.name++; } while (0)
#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
do { (msh)->mshstats.name++; } while (0)
#else
#define IEEE80211_IFSTA_MESH_CTR_INC(sta, name) \
#define IEEE80211_IFSTA_MESH_CTR_INC(msh, name) \
do { } while (0)
#endif
@ -455,6 +453,9 @@ struct ieee80211_sub_if_data {
struct ieee80211_if_wds wds;
struct ieee80211_if_vlan vlan;
struct ieee80211_if_sta sta;
#ifdef CONFIG_MAC80211_MESH
struct ieee80211_if_mesh mesh;
#endif
u32 mntr_flags;
} u;
@ -548,6 +549,19 @@ struct ieee80211_sub_if_data *vif_to_sdata(struct ieee80211_vif *p)
return container_of(p, struct ieee80211_sub_if_data, vif);
}
static inline void
ieee80211_sdata_set_mesh_id(struct ieee80211_sub_if_data *sdata,
u8 mesh_id_len, u8 *mesh_id)
{
#ifdef CONFIG_MAC80211_MESH
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
ifmsh->mesh_id_len = mesh_id_len;
memcpy(ifmsh->mesh_id, mesh_id, mesh_id_len);
#else
WARN_ON(1);
#endif
}
enum {
IEEE80211_RX_MSG = 1,
IEEE80211_TX_STATUS_MSG = 2,
@ -935,13 +949,6 @@ ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
void ieee80211_rx_bss_put(struct ieee80211_local *local,
struct ieee80211_sta_bss *bss);
#ifdef CONFIG_MAC80211_MESH
void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
#else
static inline void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
{}
#endif
/* interface handling */
void ieee80211_if_setup(struct net_device *dev);
int ieee80211_if_add(struct ieee80211_local *local, const char *name,

13
net/mac80211/iface.c
View File

@ -54,10 +54,9 @@ static void ieee80211_teardown_sdata(struct net_device *dev)
break;
case IEEE80211_IF_TYPE_MESH_POINT:
/* Allow compiler to elide mesh_rmc_free call. */
if (ieee80211_vif_is_mesh(&sdata->vif))
mesh_rmc_free(sdata);
/* fall through */
break;
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
kfree(sdata->u.sta.extra_ie);
@ -100,7 +99,6 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
skb_queue_head_init(&sdata->u.ap.ps_bc_buf);
INIT_LIST_HEAD(&sdata->u.ap.vlans);
break;
case IEEE80211_IF_TYPE_MESH_POINT:
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
ifsta = &sdata->u.sta;
@ -117,7 +115,8 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata,
IEEE80211_STA_AUTO_CHANNEL_SEL;
if (ieee80211_num_regular_queues(&sdata->local->hw) >= 4)
ifsta->flags |= IEEE80211_STA_WMM_ENABLED;
break;
case IEEE80211_IF_TYPE_MESH_POINT:
if (ieee80211_vif_is_mesh(&sdata->vif))
ieee80211_mesh_init_sdata(sdata);
break;
@ -225,9 +224,9 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
if (ieee80211_vif_is_mesh(&sdata->vif) &&
params && params->mesh_id_len)
ieee80211_if_sta_set_mesh_id(&sdata->u.sta,
params->mesh_id_len,
params->mesh_id);
ieee80211_sdata_set_mesh_id(sdata,
params->mesh_id_len,
params->mesh_id);
list_add_tail_rcu(&sdata->list, &local->interfaces);

13
net/mac80211/main.c
View File

@ -252,6 +252,8 @@ static int ieee80211_open(struct net_device *dev)
sdata->bss = &sdata->u.ap;
break;
case IEEE80211_IF_TYPE_MESH_POINT:
if (!ieee80211_vif_is_mesh(&sdata->vif))
break;
/* mesh ifaces must set allmulti to forward mcast traffic */
atomic_inc(&local->iff_allmultis);
break;
@ -540,10 +542,6 @@ static int ieee80211_stop(struct net_device *dev)
ieee80211_configure_filter(local);
netif_addr_unlock_bh(local->mdev);
break;
case IEEE80211_IF_TYPE_MESH_POINT:
/* allmulti is always set on mesh ifaces */
atomic_dec(&local->iff_allmultis);
/* fall through */
case IEEE80211_IF_TYPE_STA:
case IEEE80211_IF_TYPE_IBSS:
sdata->u.sta.state = IEEE80211_STA_MLME_DISABLED;
@ -571,6 +569,13 @@ static int ieee80211_stop(struct net_device *dev)
sdata->u.sta.extra_ie = NULL;
sdata->u.sta.extra_ie_len = 0;
/* fall through */
case IEEE80211_IF_TYPE_MESH_POINT:
if (ieee80211_vif_is_mesh(&sdata->vif)) {
/* allmulti is always set on mesh ifaces */
atomic_dec(&local->iff_allmultis);
ieee80211_stop_mesh(sdata);
}
/* fall through */
default:
conf.vif = &sdata->vif;
conf.type = sdata->vif.type;

326
net/mac80211/mesh.c
View File

@ -12,6 +12,9 @@
#include "ieee80211_i.h"
#include "mesh.h"
#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
#define PP_OFFSET 1 /* Path Selection Protocol */
#define PM_OFFSET 5 /* Path Selection Metric */
#define CC_OFFSET 9 /* Congestion Control Mode */
@ -35,6 +38,16 @@ void ieee80211s_stop(void)
kmem_cache_destroy(rm_cache);
}
static void ieee80211_mesh_housekeeping_timer(unsigned long data)
{
struct ieee80211_sub_if_data *sdata = (void *) data;
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
ifmsh->housekeeping = true;
queue_work(local->hw.workqueue, &ifmsh->work);
}
/**
* mesh_matches_local - check if the config of a mesh point matches ours
*
@ -46,7 +59,7 @@ void ieee80211s_stop(void)
*/
bool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_sta *sta = &sdata->u.sta;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
/*
* As support for each feature is added, check for matching
@ -58,11 +71,11 @@ bool mesh_matches_local(struct ieee802_11_elems *ie, struct ieee80211_sub_if_dat
* - MDA enabled
* - Power management control on fc
*/
if (sta->mesh_id_len == ie->mesh_id_len &&
memcmp(sta->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
memcmp(sta->mesh_pp_id, ie->mesh_config + PP_OFFSET, 4) == 0 &&
memcmp(sta->mesh_pm_id, ie->mesh_config + PM_OFFSET, 4) == 0 &&
memcmp(sta->mesh_cc_id, ie->mesh_config + CC_OFFSET, 4) == 0)
if (ifmsh->mesh_id_len == ie->mesh_id_len &&
memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
memcmp(ifmsh->mesh_pp_id, ie->mesh_config + PP_OFFSET, 4) == 0 &&
memcmp(ifmsh->mesh_pm_id, ie->mesh_config + PM_OFFSET, 4) == 0 &&
memcmp(ifmsh->mesh_cc_id, ie->mesh_config + CC_OFFSET, 4) == 0)
return true;
return false;
@ -95,11 +108,11 @@ void mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
*/
free_plinks = mesh_plink_availables(sdata);
if (free_plinks != sdata->u.sta.accepting_plinks)
ieee80211_sta_timer((unsigned long) sdata);
if (free_plinks != sdata->u.mesh.accepting_plinks)
ieee80211_mesh_housekeeping_timer((unsigned long) sdata);
}
void mesh_ids_set_default(struct ieee80211_if_sta *sta)
void mesh_ids_set_default(struct ieee80211_if_mesh *sta)
{
u8 def_id[4] = {0x00, 0x0F, 0xAC, 0xff};
@ -112,22 +125,22 @@ int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
{
int i;
sdata->u.sta.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
if (!sdata->u.sta.rmc)
sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
if (!sdata->u.mesh.rmc)
return -ENOMEM;
sdata->u.sta.rmc->idx_mask = RMC_BUCKETS - 1;
sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1;
for (i = 0; i < RMC_BUCKETS; i++)
INIT_LIST_HEAD(&sdata->u.sta.rmc->bucket[i].list);
INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i].list);
return 0;
}
void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
{
struct mesh_rmc *rmc = sdata->u.sta.rmc;
struct mesh_rmc *rmc = sdata->u.mesh.rmc;
struct rmc_entry *p, *n;
int i;
if (!sdata->u.sta.rmc)
if (!sdata->u.mesh.rmc)
return;
for (i = 0; i < RMC_BUCKETS; i++)
@ -137,7 +150,7 @@ void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
}
kfree(rmc);
sdata->u.sta.rmc = NULL;
sdata->u.mesh.rmc = NULL;
}
/**
@ -155,7 +168,7 @@ void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
int mesh_rmc_check(u8 *sa, struct ieee80211s_hdr *mesh_hdr,
struct ieee80211_sub_if_data *sdata)
{
struct mesh_rmc *rmc = sdata->u.sta.rmc;
struct mesh_rmc *rmc = sdata->u.mesh.rmc;
u32 seqnum = 0;
int entries = 0;
u8 idx;
@ -217,11 +230,11 @@ void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
}
}
pos = skb_put(skb, 2 + sdata->u.sta.mesh_id_len);
pos = skb_put(skb, 2 + sdata->u.mesh.mesh_id_len);
*pos++ = WLAN_EID_MESH_ID;
*pos++ = sdata->u.sta.mesh_id_len;
if (sdata->u.sta.mesh_id_len)
memcpy(pos, sdata->u.sta.mesh_id, sdata->u.sta.mesh_id_len);
*pos++ = sdata->u.mesh.mesh_id_len;
if (sdata->u.mesh.mesh_id_len)
memcpy(pos, sdata->u.mesh.mesh_id, sdata->u.mesh.mesh_id_len);
pos = skb_put(skb, 21);
*pos++ = WLAN_EID_MESH_CONFIG;
@ -230,15 +243,15 @@ void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
*pos++ = 1;
/* Active path selection protocol ID */
memcpy(pos, sdata->u.sta.mesh_pp_id, 4);
memcpy(pos, sdata->u.mesh.mesh_pp_id, 4);
pos += 4;
/* Active path selection metric ID */
memcpy(pos, sdata->u.sta.mesh_pm_id, 4);
memcpy(pos, sdata->u.mesh.mesh_pm_id, 4);
pos += 4;
/* Congestion control mode identifier */
memcpy(pos, sdata->u.sta.mesh_cc_id, 4);
memcpy(pos, sdata->u.mesh.mesh_cc_id, 4);
pos += 4;
/* Channel precedence:
@ -248,8 +261,8 @@ void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
pos += 4;
/* Mesh capability */
sdata->u.sta.accepting_plinks = mesh_plink_availables(sdata);
*pos++ = sdata->u.sta.accepting_plinks ? ACCEPT_PLINKS : 0x00;
sdata->u.mesh.accepting_plinks = mesh_plink_availables(sdata);
*pos++ = sdata->u.mesh.accepting_plinks ? ACCEPT_PLINKS : 0x00;
*pos++ = 0x00;
return;
@ -337,10 +350,10 @@ static void ieee80211_mesh_path_timer(unsigned long data)
{
struct ieee80211_sub_if_data *sdata =
(struct ieee80211_sub_if_data *) data;
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct ieee80211_local *local = wdev_priv(&sdata->wdev);
queue_work(local->hw.workqueue, &ifsta->work);
queue_work(local->hw.workqueue, &ifmsh->work);
}
struct mesh_table *mesh_table_grow(struct mesh_table *tbl)
@ -392,50 +405,255 @@ int ieee80211_new_mesh_header(struct ieee80211s_hdr *meshhdr,
struct ieee80211_sub_if_data *sdata)
{
meshhdr->flags = 0;
meshhdr->ttl = sdata->u.sta.mshcfg.dot11MeshTTL;
put_unaligned(cpu_to_le32(sdata->u.sta.mesh_seqnum), &meshhdr->seqnum);
sdata->u.sta.mesh_seqnum++;
meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum);
sdata->u.mesh.mesh_seqnum++;
return 6;
}
static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_mesh *ifmsh)
{
bool free_plinks;
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
printk(KERN_DEBUG "%s: running mesh housekeeping\n",
sdata->dev->name);
#endif
ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
mesh_path_expire(sdata);
free_plinks = mesh_plink_availables(sdata);
if (free_plinks != sdata->u.mesh.accepting_plinks)
ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
ifmsh->housekeeping = false;
mod_timer(&ifmsh->housekeeping_timer,
round_jiffies(jiffies + IEEE80211_MESH_HOUSEKEEPING_INTERVAL));
}
void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct ieee80211_local *local = sdata->local;
ifmsh->housekeeping = true;
queue_work(local->hw.workqueue, &ifmsh->work);
ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
}
void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
{
del_timer_sync(&sdata->u.mesh.housekeeping_timer);
/*
* When we get here, the interface is marked down.
* Call synchronize_rcu() to wait for the RX path
* should it be using the interface and enqueuing
* frames at this very time on another CPU.
*/
synchronize_rcu();
skb_queue_purge(&sdata->u.mesh.skb_queue);
}
static void ieee80211_mesh_rx_bcn_presp(struct ieee80211_sub_if_data *sdata,
u16 stype,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee80211_rx_status *rx_status)
{
struct ieee80211_local *local= sdata->local;
struct ieee802_11_elems elems;
struct ieee80211_channel *channel;
u64 supp_rates = 0;
size_t baselen;
int freq;
enum ieee80211_band band = rx_status->band;
/* ignore ProbeResp to foreign address */
if (stype == IEEE80211_STYPE_PROBE_RESP &&
compare_ether_addr(mgmt->da, sdata->dev->dev_addr))
return;
baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
if (baselen > len)
return;
ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
&elems);
if (elems.ds_params && elems.ds_params_len == 1)
freq = ieee80211_channel_to_frequency(elems.ds_params[0]);
else
freq = rx_status->freq;
channel = ieee80211_get_channel(local->hw.wiphy, freq);
if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
return;
if (elems.mesh_id && elems.mesh_config &&
mesh_matches_local(&elems, sdata)) {
supp_rates = ieee80211_sta_get_rates(local, &elems, band);
mesh_neighbour_update(mgmt->sa, supp_rates, sdata,
mesh_peer_accepts_plinks(&elems));
}
}
static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee80211_rx_status *rx_status)
{
switch (mgmt->u.action.category) {
case PLINK_CATEGORY:
mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
break;
case MESH_PATH_SEL_CATEGORY:
mesh_rx_path_sel_frame(sdata, mgmt, len);
break;
}
}
static void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb)
{
struct ieee80211_rx_status *rx_status;
struct ieee80211_if_mesh *ifmsh;
struct ieee80211_mgmt *mgmt;
u16 stype;
ifmsh = &sdata->u.mesh;
rx_status = (struct ieee80211_rx_status *) skb->cb;
mgmt = (struct ieee80211_mgmt *) skb->data;
stype = le16_to_cpu(mgmt->frame_control) & IEEE80211_FCTL_STYPE;
switch (stype) {
case IEEE80211_STYPE_PROBE_RESP:
case IEEE80211_STYPE_BEACON:
ieee80211_mesh_rx_bcn_presp(sdata, stype, mgmt, skb->len,
rx_status);
break;
case IEEE80211_STYPE_ACTION:
ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status);
break;
}
kfree_skb(skb);
}
static void ieee80211_mesh_work(struct work_struct *work)
{
struct ieee80211_sub_if_data *sdata =
container_of(work, struct ieee80211_sub_if_data, u.mesh.work);
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct sk_buff *skb;
if (!netif_running(sdata->dev))
return;
if (local->sta_sw_scanning || local->sta_hw_scanning)
return;
while ((skb = skb_dequeue(&ifmsh->skb_queue)))
ieee80211_mesh_rx_queued_mgmt(sdata, skb);
if (ifmsh->preq_queue_len &&
time_after(jiffies,
ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval)))
mesh_path_start_discovery(sdata);
if (ifmsh->housekeeping)
ieee80211_mesh_housekeeping(sdata, ifmsh);
}
void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local)
{
struct ieee80211_sub_if_data *sdata;
rcu_read_lock();
list_for_each_entry_rcu(sdata, &local->interfaces, list)
if (ieee80211_vif_is_mesh(&sdata->vif))
queue_work(local->hw.workqueue, &sdata->u.mesh.work);
rcu_read_unlock();
}
void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
ifsta->mshcfg.dot11MeshRetryTimeout = MESH_RET_T;
ifsta->mshcfg.dot11MeshConfirmTimeout = MESH_CONF_T;
ifsta->mshcfg.dot11MeshHoldingTimeout = MESH_HOLD_T;
ifsta->mshcfg.dot11MeshMaxRetries = MESH_MAX_RETR;
ifsta->mshcfg.dot11MeshTTL = MESH_TTL;
ifsta->mshcfg.auto_open_plinks = true;
ifsta->mshcfg.dot11MeshMaxPeerLinks =
INIT_WORK(&ifmsh->work, ieee80211_mesh_work);
setup_timer(&ifmsh->housekeeping_timer,
ieee80211_mesh_housekeeping_timer,
(unsigned long) sdata);
skb_queue_head_init(&sdata->u.mesh.skb_queue);
ifmsh->mshcfg.dot11MeshRetryTimeout = MESH_RET_T;
ifmsh->mshcfg.dot11MeshConfirmTimeout = MESH_CONF_T;
ifmsh->mshcfg.dot11MeshHoldingTimeout = MESH_HOLD_T;
ifmsh->mshcfg.dot11MeshMaxRetries = MESH_MAX_RETR;
ifmsh->mshcfg.dot11MeshTTL = MESH_TTL;
ifmsh->mshcfg.auto_open_plinks = true;
ifmsh->mshcfg.dot11MeshMaxPeerLinks =
MESH_MAX_ESTAB_PLINKS;
ifsta->mshcfg.dot11MeshHWMPactivePathTimeout =
ifmsh->mshcfg.dot11MeshHWMPactivePathTimeout =
MESH_PATH_TIMEOUT;
ifsta->mshcfg.dot11MeshHWMPpreqMinInterval =
ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval =
MESH_PREQ_MIN_INT;
ifsta->mshcfg.dot11MeshHWMPnetDiameterTraversalTime =
ifmsh->mshcfg.dot11MeshHWMPnetDiameterTraversalTime =
MESH_DIAM_TRAVERSAL_TIME;
ifsta->mshcfg.dot11MeshHWMPmaxPREQretries =
ifmsh->mshcfg.dot11MeshHWMPmaxPREQretries =
MESH_MAX_PREQ_RETRIES;
ifsta->mshcfg.path_refresh_time =
ifmsh->mshcfg.path_refresh_time =
MESH_PATH_REFRESH_TIME;
ifsta->mshcfg.min_discovery_timeout =
ifmsh->mshcfg.min_discovery_timeout =
MESH_MIN_DISCOVERY_TIMEOUT;
ifsta->accepting_plinks = true;
ifsta->preq_id = 0;
ifsta->dsn = 0;
atomic_set(&ifsta->mpaths, 0);
ifmsh->accepting_plinks = true;
ifmsh->preq_id = 0;
ifmsh->dsn = 0;
atomic_set(&ifmsh->mpaths, 0);
mesh_rmc_init(sdata);
ifsta->last_preq = jiffies;
ifmsh->last_preq = jiffies;
/* Allocate all mesh structures when creating the first mesh interface. */
if (!mesh_allocated)
ieee80211s_init();
mesh_ids_set_default(ifsta);
setup_timer(&ifsta->mesh_path_timer,
mesh_ids_set_default(ifmsh);
setup_timer(&ifmsh->mesh_path_timer,
ieee80211_mesh_path_timer,
(unsigned long) sdata);
INIT_LIST_HEAD(&ifsta->preq_queue.list);
spin_lock_init(&ifsta->mesh_preq_queue_lock);
INIT_LIST_HEAD(&ifmsh->preq_queue.list);
spin_lock_init(&ifmsh->mesh_preq_queue_lock);
}
ieee80211_rx_result
ieee80211_mesh_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
struct ieee80211_rx_status *rx_status)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct ieee80211_mgmt *mgmt;
u16 fc;
if (skb->len < 24)
return RX_DROP_MONITOR;
mgmt = (struct ieee80211_mgmt *) skb->data;
fc = le16_to_cpu(mgmt->frame_control);
switch (fc & IEEE80211_FCTL_STYPE) {
case IEEE80211_STYPE_PROBE_RESP:
case IEEE80211_STYPE_BEACON:
case IEEE80211_STYPE_ACTION:
memcpy(skb->cb, rx_status, sizeof(*rx_status));
skb_queue_tail(&ifmsh->skb_queue, skb);
queue_work(local->hw.workqueue, &ifmsh->work);
return RX_QUEUED;
}
return RX_CONTINUE;
}

15
net/mac80211/mesh.h
View File

@ -206,7 +206,7 @@ int mesh_rmc_check(u8 *addr, struct ieee80211s_hdr *mesh_hdr,
struct ieee80211_sub_if_data *sdata);
bool mesh_matches_local(struct ieee802_11_elems *ie,
struct ieee80211_sub_if_data *sdata);
void mesh_ids_set_default(struct ieee80211_if_sta *sta);
void mesh_ids_set_default(struct ieee80211_if_mesh *mesh);
void mesh_mgmt_ies_add(struct sk_buff *skb,
struct ieee80211_sub_if_data *sdata);
void mesh_rmc_free(struct ieee80211_sub_if_data *sdata);
@ -214,6 +214,11 @@ int mesh_rmc_init(struct ieee80211_sub_if_data *sdata);
void ieee80211s_init(void);
void ieee80211s_stop(void);
void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata);
ieee80211_rx_result
ieee80211_mesh_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
struct ieee80211_rx_status *rx_status);
void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata);
/* Mesh paths */
int mesh_nexthop_lookup(struct sk_buff *skb,
@ -269,8 +274,8 @@ extern int mesh_allocated;
static inline int mesh_plink_free_count(struct ieee80211_sub_if_data *sdata)
{
return sdata->u.sta.mshcfg.dot11MeshMaxPeerLinks -
atomic_read(&sdata->u.sta.mshstats.estab_plinks);
return sdata->u.mesh.mshcfg.dot11MeshMaxPeerLinks -
atomic_read(&sdata->u.mesh.mshstats.estab_plinks);
}
static inline bool mesh_plink_availables(struct ieee80211_sub_if_data *sdata)
@ -288,8 +293,12 @@ static inline void mesh_path_activate(struct mesh_path *mpath)
for (i = 0; i <= x->hash_mask; i++) \
hlist_for_each_entry_rcu(node, p, &x->hash_buckets[i], list)
void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local);
#else
#define mesh_allocated 0
static inline void
ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local) {}
#endif
#endif /* IEEE80211S_H */

98
net/mac80211/mesh_hwmp.c
View File

@ -64,14 +64,14 @@ static inline u32 u32_field_get(u8 *preq_elem, int offset, bool ae)
#define DSN_LT(x, y) ((long) (x) - (long) (y) < 0)
#define net_traversal_jiffies(s) \
msecs_to_jiffies(s->u.sta.mshcfg.dot11MeshHWMPnetDiameterTraversalTime)
msecs_to_jiffies(s->u.mesh.mshcfg.dot11MeshHWMPnetDiameterTraversalTime)
#define default_lifetime(s) \
MSEC_TO_TU(s->u.sta.mshcfg.dot11MeshHWMPactivePathTimeout)
MSEC_TO_TU(s->u.mesh.mshcfg.dot11MeshHWMPactivePathTimeout)
#define min_preq_int_jiff(s) \
(msecs_to_jiffies(s->u.sta.mshcfg.dot11MeshHWMPpreqMinInterval))
#define max_preq_retries(s) (s->u.sta.mshcfg.dot11MeshHWMPmaxPREQretries)
(msecs_to_jiffies(s->u.mesh.mshcfg.dot11MeshHWMPpreqMinInterval))
#define max_preq_retries(s) (s->u.mesh.mshcfg.dot11MeshHWMPmaxPREQretries)
#define disc_timeout_jiff(s) \
msecs_to_jiffies(sdata->u.sta.mshcfg.min_discovery_timeout)
msecs_to_jiffies(sdata->u.mesh.mshcfg.min_discovery_timeout)
enum mpath_frame_type {
MPATH_PREQ = 0,
@ -395,7 +395,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt,
u8 *preq_elem, u32 metric) {
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct mesh_path *mpath;
u8 *dst_addr, *orig_addr;
u8 dst_flags, ttl;
@ -414,11 +414,11 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
forward = false;
reply = true;
metric = 0;
if (time_after(jiffies, ifsta->last_dsn_update +
if (time_after(jiffies, ifmsh->last_dsn_update +
net_traversal_jiffies(sdata)) ||
time_before(jiffies, ifsta->last_dsn_update)) {
dst_dsn = ++ifsta->dsn;
ifsta->last_dsn_update = jiffies;
time_before(jiffies, ifmsh->last_dsn_update)) {
dst_dsn = ++ifmsh->dsn;
ifmsh->last_dsn_update = jiffies;
}
} else {
rcu_read_lock();
@ -444,7 +444,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
if (reply) {
lifetime = PREQ_IE_LIFETIME(preq_elem);
ttl = ifsta->mshcfg.dot11MeshTTL;
ttl = ifmsh->mshcfg.dot11MeshTTL;
if (ttl != 0)
mesh_path_sel_frame_tx(MPATH_PREP, 0, dst_addr,
cpu_to_le32(dst_dsn), 0, orig_addr,
@ -452,7 +452,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
cpu_to_le32(lifetime), cpu_to_le32(metric),
0, sdata);
else
ifsta->mshstats.dropped_frames_ttl++;
ifmsh->mshstats.dropped_frames_ttl++;
}
if (forward) {
@ -462,7 +462,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
ttl = PREQ_IE_TTL(preq_elem);
lifetime = PREQ_IE_LIFETIME(preq_elem);
if (ttl <= 1) {
ifsta->mshstats.dropped_frames_ttl++;
ifmsh->mshstats.dropped_frames_ttl++;
return;
}
--ttl;
@ -475,7 +475,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
hopcount, ttl, cpu_to_le32(lifetime),
cpu_to_le32(metric), cpu_to_le32(preq_id),
sdata);
ifsta->mshstats.fwded_frames++;
ifmsh->mshstats.fwded_frames++;
}
}
@ -503,7 +503,7 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
ttl = PREP_IE_TTL(prep_elem);
if (ttl <= 1) {
sdata->u.sta.mshstats.dropped_frames_ttl++;
sdata->u.mesh.mshstats.dropped_frames_ttl++;
return;
}
@ -533,12 +533,12 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
cpu_to_le32(lifetime), cpu_to_le32(metric),
0, sdata);
rcu_read_unlock();
sdata->u.sta.mshstats.fwded_frames++;
sdata->u.mesh.mshstats.fwded_frames++;
return;
fail:
rcu_read_unlock();
sdata->u.sta.mshstats.dropped_frames_no_route++;
sdata->u.mesh.mshstats.dropped_frames_no_route++;
return;
}
@ -631,7 +631,7 @@ void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
static void mesh_queue_preq(struct mesh_path *mpath, u8 flags)
{
struct ieee80211_sub_if_data *sdata = mpath->sdata;
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct mesh_preq_queue *preq_node;
preq_node = kmalloc(sizeof(struct mesh_preq_queue), GFP_KERNEL);
@ -640,9 +640,9 @@ static void mesh_queue_preq(struct mesh_path *mpath, u8 flags)
return;
}
spin_lock(&ifsta->mesh_preq_queue_lock);
if (ifsta->preq_queue_len == MAX_PREQ_QUEUE_LEN) {
spin_unlock(&ifsta->mesh_preq_queue_lock);
spin_lock(&ifmsh->mesh_preq_queue_lock);
if (ifmsh->preq_queue_len == MAX_PREQ_QUEUE_LEN) {
spin_unlock(&ifmsh->mesh_preq_queue_lock);
kfree(preq_node);
if (printk_ratelimit())
printk(KERN_DEBUG "Mesh HWMP: PREQ node queue full\n");
@ -652,21 +652,21 @@ static void mesh_queue_preq(struct mesh_path *mpath, u8 flags)
memcpy(preq_node->dst, mpath->dst, ETH_ALEN);
preq_node->flags = flags;
list_add_tail(&preq_node->list, &ifsta->preq_queue.list);
++ifsta->preq_queue_len;
spin_unlock(&ifsta->mesh_preq_queue_lock);
list_add_tail(&preq_node->list, &ifmsh->preq_queue.list);
++ifmsh->preq_queue_len;
spin_unlock(&ifmsh->mesh_preq_queue_lock);
if (time_after(jiffies, ifsta->last_preq + min_preq_int_jiff(sdata)))
queue_work(sdata->local->hw.workqueue, &ifsta->work);
if (time_after(jiffies, ifmsh->last_preq + min_preq_int_jiff(sdata)))
queue_work(sdata->local->hw.workqueue, &ifmsh->work);
else if (time_before(jiffies, ifsta->last_preq)) {
else if (time_before(jiffies, ifmsh->last_preq)) {
/* avoid long wait if did not send preqs for a long time
* and jiffies wrapped around
*/
ifsta->last_preq = jiffies - min_preq_int_jiff(sdata) - 1;
queue_work(sdata->local->hw.workqueue, &ifsta->work);
ifmsh->last_preq = jiffies - min_preq_int_jiff(sdata) - 1;
queue_work(sdata->local->hw.workqueue, &ifmsh->work);
} else
mod_timer(&ifsta->mesh_path_timer, ifsta->last_preq +
mod_timer(&ifmsh->mesh_path_timer, ifmsh->last_preq +
min_preq_int_jiff(sdata));
}
@ -677,25 +677,25 @@ static void mesh_queue_preq(struct mesh_path *mpath, u8 flags)
*/
void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_sta *ifsta = &sdata->u.sta;
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
struct mesh_preq_queue *preq_node;
struct mesh_path *mpath;
u8 ttl, dst_flags;
u32 lifetime;
spin_lock(&ifsta->mesh_preq_queue_lock);
if (!ifsta->preq_queue_len ||
time_before(jiffies, ifsta->last_preq +
spin_lock(&ifmsh->mesh_preq_queue_lock);
if (!ifmsh->preq_queue_len ||
time_before(jiffies, ifmsh->last_preq +
min_preq_int_jiff(sdata))) {
spin_unlock(&ifsta->mesh_preq_queue_lock);
spin_unlock(&ifmsh->mesh_preq_queue_lock);
return;
}
preq_node = list_first_entry(&ifsta->preq_queue.list,
preq_node = list_first_entry(&ifmsh->preq_queue.list,
struct mesh_preq_queue, list);
list_del(&preq_node->list);
--ifsta->preq_queue_len;
spin_unlock(&ifsta->mesh_preq_queue_lock);
--ifmsh->preq_queue_len;
spin_unlock(&ifmsh->mesh_preq_queue_lock);
rcu_read_lock();
mpath = mesh_path_lookup(preq_node->dst, sdata);
@ -720,18 +720,18 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
goto enddiscovery;
}
ifsta->last_preq = jiffies;
ifmsh->last_preq = jiffies;
if (time_after(jiffies, ifsta->last_dsn_update +
if (time_after(jiffies, ifmsh->last_dsn_update +
net_traversal_jiffies(sdata)) ||
time_before(jiffies, ifsta->last_dsn_update)) {
++ifsta->dsn;
sdata->u.sta.last_dsn_update = jiffies;
time_before(jiffies, ifmsh->last_dsn_update)) {
++ifmsh->dsn;
sdata->u.mesh.last_dsn_update = jiffies;
}
lifetime = default_lifetime(sdata);
ttl = sdata->u.sta.mshcfg.dot11MeshTTL;
ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
if (ttl == 0) {
sdata->u.sta.mshstats.dropped_frames_ttl++;
sdata->u.mesh.mshstats.dropped_frames_ttl++;
spin_unlock_bh(&mpath->state_lock);
goto enddiscovery;
}
@ -743,10 +743,10 @@ void mesh_path_start_discovery(struct ieee80211_sub_if_data *sdata)
spin_unlock_bh(&mpath->state_lock);
mesh_path_sel_frame_tx(MPATH_PREQ, 0, sdata->dev->dev_addr,
cpu_to_le32(ifsta->dsn), dst_flags, mpath->dst,
cpu_to_le32(ifmsh->dsn), dst_flags, mpath->dst,
cpu_to_le32(mpath->dsn), sdata->dev->broadcast, 0,
ttl, cpu_to_le32(lifetime), 0,
cpu_to_le32(ifsta->preq_id++), sdata);
cpu_to_le32(ifmsh->preq_id++), sdata);
mod_timer(&mpath->timer, jiffies + mpath->discovery_timeout);
enddiscovery:
@ -783,7 +783,7 @@ int mesh_nexthop_lookup(struct sk_buff *skb,
mpath = mesh_path_lookup(dst_addr, sdata);
if (!mpath) {
dev_kfree_skb(skb);
sdata->u.sta.mshstats.dropped_frames_no_route++;
sdata->u.mesh.mshstats.dropped_frames_no_route++;
err = -ENOSPC;
goto endlookup;
}
@ -791,7 +791,7 @@ int mesh_nexthop_lookup(struct sk_buff *skb,
if (mpath->flags & MESH_PATH_ACTIVE) {
if (time_after(jiffies, mpath->exp_time -
msecs_to_jiffies(sdata->u.sta.mshcfg.path_refresh_time))
msecs_to_jiffies(sdata->u.mesh.mshcfg.path_refresh_time))
&& !memcmp(sdata->dev->dev_addr, hdr->addr4,
ETH_ALEN)
&& !(mpath->flags & MESH_PATH_RESOLVING)

8
net/mac80211/mesh_pathtbl.c
View File

@ -153,7 +153,7 @@ int mesh_path_add(u8 *dst, struct ieee80211_sub_if_data *sdata)
if (is_multicast_ether_addr(dst))
return -ENOTSUPP;
if (atomic_add_unless(&sdata->u.sta.mpaths, 1, MESH_MAX_MPATHS) == 0)
if (atomic_add_unless(&sdata->u.mesh.mpaths, 1, MESH_MAX_MPATHS) == 0)
return -ENOSPC;
err = -ENOMEM;
@ -221,7 +221,7 @@ err_exists:
err_node_alloc:
kfree(new_mpath);
err_path_alloc:
atomic_dec(&sdata->u.sta.mpaths);
atomic_dec(&sdata->u.mesh.mpaths);
return err;
}
@ -306,7 +306,7 @@ static void mesh_path_node_reclaim(struct rcu_head *rp)
struct ieee80211_sub_if_data *sdata = node->mpath->sdata;
del_timer_sync(&node->mpath->timer);
atomic_dec(&sdata->u.sta.mpaths);
atomic_dec(&sdata->u.mesh.mpaths);
kfree(node->mpath);
kfree(node);
}
@ -401,7 +401,7 @@ void mesh_path_discard_frame(struct sk_buff *skb,
}
kfree_skb(skb);
sdata->u.sta.mshstats.dropped_frames_no_route++;
sdata->u.mesh.mshstats.dropped_frames_no_route++;
}
/**

18
net/mac80211/mesh_plink.c
View File

@ -36,11 +36,11 @@
#define MESH_SECURITY_AUTHENTICATION_IMPOSSIBLE 9
#define MESH_SECURITY_FAILED_VERIFICATION 10
#define dot11MeshMaxRetries(s) (s->u.sta.mshcfg.dot11MeshMaxRetries)
#define dot11MeshRetryTimeout(s) (s->u.sta.mshcfg.dot11MeshRetryTimeout)
#define dot11MeshConfirmTimeout(s) (s->u.sta.mshcfg.dot11MeshConfirmTimeout)
#define dot11MeshHoldingTimeout(s) (s->u.sta.mshcfg.dot11MeshHoldingTimeout)
#define dot11MeshMaxPeerLinks(s) (s->u.sta.mshcfg.dot11MeshMaxPeerLinks)
#define dot11MeshMaxRetries(s) (s->u.mesh.mshcfg.dot11MeshMaxRetries)
#define dot11MeshRetryTimeout(s) (s->u.mesh.mshcfg.dot11MeshRetryTimeout)
#define dot11MeshConfirmTimeout(s) (s->u.mesh.mshcfg.dot11MeshConfirmTimeout)
#define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout)
#define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks)
enum plink_frame_type {
PLINK_OPEN = 0,
@ -63,14 +63,14 @@ enum plink_event {
static inline
void mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
{
atomic_inc(&sdata->u.sta.mshstats.estab_plinks);
atomic_inc(&sdata->u.mesh.mshstats.estab_plinks);
mesh_accept_plinks_update(sdata);
}
static inline
void mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
{
atomic_dec(&sdata->u.sta.mshstats.estab_plinks);
atomic_dec(&sdata->u.mesh.mshstats.estab_plinks);
mesh_accept_plinks_update(sdata);
}
@ -245,8 +245,8 @@ void mesh_neighbour_update(u8 *hw_addr, u64 rates, struct ieee80211_sub_if_data
sta->last_rx = jiffies;
sta->supp_rates[local->hw.conf.channel->band] = rates;
if (peer_accepting_plinks && sta->plink_state == PLINK_LISTEN &&
sdata->u.sta.accepting_plinks &&
sdata->u.sta.mshcfg.auto_open_plinks)
sdata->u.mesh.accepting_plinks &&
sdata->u.mesh.mshcfg.auto_open_plinks)
mesh_plink_open(sta);
rcu_read_unlock();

83
net/mac80211/mlme.c
View File

@ -22,11 +22,11 @@
#include <linux/rtnetlink.h>
#include <net/iw_handler.h>
#include <net/mac80211.h>
#include <asm/unaligned.h>
#include "ieee80211_i.h"
#include "rate.h"
#include "led.h"
#include "mesh.h"
#define IEEE80211_ASSOC_SCANS_MAX_TRIES 2
#define IEEE80211_AUTH_TIMEOUT (HZ / 5)
@ -34,7 +34,6 @@
#define IEEE80211_ASSOC_TIMEOUT (HZ / 5)
#define IEEE80211_ASSOC_MAX_TRIES 3
#define IEEE80211_MONITORING_INTERVAL (2 * HZ)
#define IEEE80211_MESH_HOUSEKEEPING_INTERVAL (60 * HZ)
#define IEEE80211_PROBE_INTERVAL (60 * HZ)
#define IEEE80211_RETRY_AUTH_INTERVAL (1 * HZ)
#define IEEE80211_SCAN_INTERVAL (2 * HZ)
@ -43,7 +42,6 @@
#define IEEE80211_IBSS_MERGE_INTERVAL (30 * HZ)
#define IEEE80211_IBSS_INACTIVITY_LIMIT (60 * HZ)
#define IEEE80211_MESH_PEER_INACTIVITY_LIMIT (1800 * HZ)
#define IEEE80211_IBSS_MAX_STA_ENTRIES 128
@ -1508,14 +1506,6 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
return;
if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id &&
elems->mesh_config && mesh_matches_local(elems, sdata)) {
supp_rates = ieee80211_sta_get_rates(local, elems, band);
mesh_neighbour_update(mgmt->sa, supp_rates, sdata,
mesh_peer_accepts_plinks(elems));
}
if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems->supp_rates &&
memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
supp_rates = ieee80211_sta_get_rates(local, elems, band);
@ -1785,26 +1775,6 @@ static void ieee80211_rx_mgmt_probe_req(struct ieee80211_sub_if_data *sdata,
ieee80211_tx_skb(sdata, skb, 0);
}
static void ieee80211_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta,
struct ieee80211_mgmt *mgmt,
size_t len,
struct ieee80211_rx_status *rx_status)
{
/* currently we only handle mesh interface action frames here */
if (!ieee80211_vif_is_mesh(&sdata->vif))
return;
switch (mgmt->u.action.category) {
case PLINK_CATEGORY:
mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
break;
case MESH_PATH_SEL_CATEGORY:
mesh_rx_path_sel_frame(sdata, mgmt, len);
break;
}
}
void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb,
struct ieee80211_rx_status *rx_status)
{
@ -1825,7 +1795,6 @@ void ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *
case IEEE80211_STYPE_PROBE_REQ:
case IEEE80211_STYPE_PROBE_RESP:
case IEEE80211_STYPE_BEACON:
case IEEE80211_STYPE_ACTION:
memcpy(skb->cb, rx_status, sizeof(*rx_status));
case IEEE80211_STYPE_AUTH:
case IEEE80211_STYPE_ASSOC_RESP:
@ -1881,9 +1850,6 @@ static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
case IEEE80211_STYPE_DISASSOC:
ieee80211_rx_mgmt_disassoc(sdata, ifsta, mgmt, skb->len);
break;
case IEEE80211_STYPE_ACTION:
ieee80211_rx_mgmt_action(sdata, ifsta, mgmt, skb->len, rx_status);
break;
}
kfree_skb(skb);
@ -1928,35 +1894,6 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata,
}
#ifdef CONFIG_MAC80211_MESH
static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata,
struct ieee80211_if_sta *ifsta)
{
bool free_plinks;
ieee80211_sta_expire(sdata, IEEE80211_MESH_PEER_INACTIVITY_LIMIT);
mesh_path_expire(sdata);
free_plinks = mesh_plink_availables(sdata);
if (free_plinks != sdata->u.sta.accepting_plinks)
ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
mod_timer(&ifsta->timer, jiffies +
IEEE80211_MESH_HOUSEKEEPING_INTERVAL);
}
void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_sta *ifsta;
ifsta = &sdata->u.sta;
ifsta->state = IEEE80211_STA_MLME_MESH_UP;
ieee80211_sta_timer((unsigned long)sdata);
ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
}
#endif
void ieee80211_sta_timer(unsigned long data)
{
struct ieee80211_sub_if_data *sdata =
@ -2524,21 +2461,13 @@ void ieee80211_sta_work(struct work_struct *work)
return;
if (WARN_ON(sdata->vif.type != IEEE80211_IF_TYPE_STA &&
sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT))
sdata->vif.type != IEEE80211_IF_TYPE_IBSS))
return;
ifsta = &sdata->u.sta;
while ((skb = skb_dequeue(&ifsta->skb_queue)))
ieee80211_sta_rx_queued_mgmt(sdata, skb);
#ifdef CONFIG_MAC80211_MESH
if (ifsta->preq_queue_len &&
time_after(jiffies,
ifsta->last_preq + msecs_to_jiffies(ifsta->mshcfg.dot11MeshHWMPpreqMinInterval)))
mesh_path_start_discovery(sdata);
#endif
if (ifsta->state != IEEE80211_STA_MLME_DIRECT_PROBE &&
ifsta->state != IEEE80211_STA_MLME_AUTHENTICATE &&
ifsta->state != IEEE80211_STA_MLME_ASSOCIATE &&
@ -2575,11 +2504,6 @@ void ieee80211_sta_work(struct work_struct *work)
case IEEE80211_STA_MLME_IBSS_JOINED:
ieee80211_sta_merge_ibss(sdata, ifsta);
break;
#ifdef CONFIG_MAC80211_MESH
case IEEE80211_STA_MLME_MESH_UP:
ieee80211_mesh_housekeeping(sdata, ifsta);
break;
#endif
default:
WARN_ON(1);
break;
@ -2596,8 +2520,7 @@ void ieee80211_sta_work(struct work_struct *work)
static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
{
if (sdata->vif.type == IEEE80211_IF_TYPE_STA ||
ieee80211_vif_is_mesh(&sdata->vif))
if (sdata->vif.type == IEEE80211_IF_TYPE_STA)
queue_work(sdata->local->hw.workqueue,
&sdata->u.sta.work);
}

7
net/mac80211/rc80211_pid_algo.c
View File

@ -148,9 +148,7 @@ static void rate_control_pid_sample(struct rc_pid_info *pinfo,
struct ieee80211_local *local,
struct sta_info *sta)
{
#ifdef CONFIG_MAC80211_MESH
struct ieee80211_sub_if_data *sdata = sta->sdata;
#endif
struct rc_pid_sta_info *spinfo = sta->rate_ctrl_priv;
struct rc_pid_rateinfo *rinfo = pinfo->rinfo;
struct ieee80211_supported_band *sband;
@ -181,11 +179,8 @@ static void rate_control_pid_sample(struct rc_pid_info *pinfo,
pf = spinfo->last_pf;
else {
pf = spinfo->tx_num_failed * 100 / spinfo->tx_num_xmit;
#ifdef CONFIG_MAC80211_MESH
if (pf == 100 &&
sdata->vif.type == IEEE80211_IF_TYPE_MESH_POINT)
if (ieee80211_vif_is_mesh(&sdata->vif) && pf == 100)
mesh_plink_broken(sta);
#endif
pf <<= RC_PID_ARITH_SHIFT;
sta->fail_avg = ((pf + (spinfo->last_pf << 3)) / 9)
>> RC_PID_ARITH_SHIFT;

8
net/mac80211/rx.c
View File

@ -1404,7 +1404,7 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
if (rx->flags & IEEE80211_RX_RA_MATCH) {
if (!mesh_hdr->ttl)
IEEE80211_IFSTA_MESH_CTR_INC(&rx->sdata->u.sta,
IEEE80211_IFSTA_MESH_CTR_INC(&rx->sdata->u.mesh,
dropped_frames_ttl);
else {
struct ieee80211_hdr *fwd_hdr;
@ -1591,9 +1591,11 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx)
if (!(rx->flags & IEEE80211_RX_RA_MATCH))
return RX_DROP_MONITOR;
if (ieee80211_vif_is_mesh(&sdata->vif))
return ieee80211_mesh_rx_mgmt(sdata, rx->skb, rx->status);
if (sdata->vif.type != IEEE80211_IF_TYPE_STA &&
sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
sdata->vif.type != IEEE80211_IF_TYPE_MESH_POINT)
sdata->vif.type != IEEE80211_IF_TYPE_IBSS)
return RX_DROP_MONITOR;
if (sdata->flags & IEEE80211_SDATA_USERSPACE_MLME)

1
net/mac80211/scan.c
View File

@ -476,6 +476,7 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw)
done:
ieee80211_mlme_notify_scan_completed(local);
ieee80211_mesh_notify_scan_completed(local);
}
EXPORT_SYMBOL(ieee80211_scan_completed);

15
net/mac80211/tx.c
View File

@ -1330,7 +1330,7 @@ int ieee80211_master_start_xmit(struct sk_buff *skb,
if (mesh_nexthop_lookup(skb, osdata))
return 0;
if (memcmp(odev->dev_addr, hdr->addr4, ETH_ALEN) != 0)
IEEE80211_IFSTA_MESH_CTR_INC(&osdata->u.sta,
IEEE80211_IFSTA_MESH_CTR_INC(&osdata->u.mesh,
fwded_frames);
}
}
@ -1483,9 +1483,9 @@ int ieee80211_subif_start_xmit(struct sk_buff *skb,
memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
memcpy(hdr.addr3, skb->data, ETH_ALEN);
memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
if (!sdata->u.sta.mshcfg.dot11MeshTTL) {
if (!sdata->u.mesh.mshcfg.dot11MeshTTL) {
/* Do not send frames with mesh_ttl == 0 */
sdata->u.sta.mshstats.dropped_frames_ttl++;
sdata->u.mesh.mshstats.dropped_frames_ttl++;
ret = 0;
goto fail;
}
@ -1815,10 +1815,8 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
struct rate_selection rsel;
struct beacon_data *beacon;
struct ieee80211_supported_band *sband;
struct ieee80211_mgmt *mgmt;
int *num_beacons;
enum ieee80211_band band = local->hw.conf.channel->band;
u8 *pos;
sband = local->hw.wiphy->bands[band];
@ -1885,7 +1883,11 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
IEEE80211_STYPE_BEACON);
num_beacons = &ifsta->num_beacons;
#ifdef CONFIG_MAC80211_MESH
} else if (ieee80211_vif_is_mesh(&sdata->vif)) {
struct ieee80211_mgmt *mgmt;
u8 *pos;
/* headroom, head length, tail length and maximum TIM length */
skb = dev_alloc_skb(local->tx_headroom + 400);
if (!skb)
@ -1910,7 +1912,8 @@ struct sk_buff *ieee80211_beacon_get(struct ieee80211_hw *hw,
mesh_mgmt_ies_add(skb, sdata);
num_beacons = &sdata->u.sta.num_beacons;
num_beacons = &sdata->u.mesh.num_beacons;
#endif
} else {
WARN_ON(1);
goto out;