610 lines
17 KiB
C
610 lines
17 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Linux WiMAX
|
|
* Initialization, addition and removal of wimax devices
|
|
*
|
|
* Copyright (C) 2005-2006 Intel Corporation <linux-wimax@intel.com>
|
|
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
|
|
*
|
|
* This implements:
|
|
*
|
|
* - basic life cycle of 'struct wimax_dev' [wimax_dev_*()]; on
|
|
* addition/registration initialize all subfields and allocate
|
|
* generic netlink resources for user space communication. On
|
|
* removal/unregistration, undo all that.
|
|
*
|
|
* - device state machine [wimax_state_change()] and support to send
|
|
* reports to user space when the state changes
|
|
* [wimax_gnl_re_state_change*()].
|
|
*
|
|
* See include/net/wimax.h for rationales and design.
|
|
*
|
|
* ROADMAP
|
|
*
|
|
* [__]wimax_state_change() Called by drivers to update device's state
|
|
* wimax_gnl_re_state_change_alloc()
|
|
* wimax_gnl_re_state_change_send()
|
|
*
|
|
* wimax_dev_init() Init a device
|
|
* wimax_dev_add() Register
|
|
* wimax_rfkill_add()
|
|
* wimax_gnl_add() Register all the generic netlink resources.
|
|
* wimax_id_table_add()
|
|
* wimax_dev_rm() Unregister
|
|
* wimax_id_table_rm()
|
|
* wimax_gnl_rm()
|
|
* wimax_rfkill_rm()
|
|
*/
|
|
#include <linux/device.h>
|
|
#include <linux/gfp.h>
|
|
#include <net/genetlink.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/wimax.h>
|
|
#include <linux/module.h>
|
|
#include "wimax-internal.h"
|
|
|
|
|
|
#define D_SUBMODULE stack
|
|
#include "debug-levels.h"
|
|
|
|
static char wimax_debug_params[128];
|
|
module_param_string(debug, wimax_debug_params, sizeof(wimax_debug_params),
|
|
0644);
|
|
MODULE_PARM_DESC(debug,
|
|
"String of space-separated NAME:VALUE pairs, where NAMEs "
|
|
"are the different debug submodules and VALUE are the "
|
|
"initial debug value to set.");
|
|
|
|
/*
|
|
* Authoritative source for the RE_STATE_CHANGE attribute policy
|
|
*
|
|
* We don't really use it here, but /me likes to keep the definition
|
|
* close to where the data is generated.
|
|
*/
|
|
/*
|
|
static const struct nla_policy wimax_gnl_re_status_change[WIMAX_GNL_ATTR_MAX + 1] = {
|
|
[WIMAX_GNL_STCH_STATE_OLD] = { .type = NLA_U8 },
|
|
[WIMAX_GNL_STCH_STATE_NEW] = { .type = NLA_U8 },
|
|
};
|
|
*/
|
|
|
|
|
|
/*
|
|
* Allocate a Report State Change message
|
|
*
|
|
* @header: save it, you need it for _send()
|
|
*
|
|
* Creates and fills a basic state change message; different code
|
|
* paths can then add more attributes to the message as needed.
|
|
*
|
|
* Use wimax_gnl_re_state_change_send() to send the returned skb.
|
|
*
|
|
* Returns: skb with the genl message if ok, IS_ERR() ptr on error
|
|
* with an errno code.
|
|
*/
|
|
static
|
|
struct sk_buff *wimax_gnl_re_state_change_alloc(
|
|
struct wimax_dev *wimax_dev,
|
|
enum wimax_st new_state, enum wimax_st old_state,
|
|
void **header)
|
|
{
|
|
int result;
|
|
struct device *dev = wimax_dev_to_dev(wimax_dev);
|
|
void *data;
|
|
struct sk_buff *report_skb;
|
|
|
|
d_fnstart(3, dev, "(wimax_dev %p new_state %u old_state %u)\n",
|
|
wimax_dev, new_state, old_state);
|
|
result = -ENOMEM;
|
|
report_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (report_skb == NULL) {
|
|
dev_err(dev, "RE_STCH: can't create message\n");
|
|
goto error_new;
|
|
}
|
|
/* FIXME: sending a group ID as the seq is wrong */
|
|
data = genlmsg_put(report_skb, 0, wimax_gnl_family.mcgrp_offset,
|
|
&wimax_gnl_family, 0, WIMAX_GNL_RE_STATE_CHANGE);
|
|
if (data == NULL) {
|
|
dev_err(dev, "RE_STCH: can't put data into message\n");
|
|
goto error_put;
|
|
}
|
|
*header = data;
|
|
|
|
result = nla_put_u8(report_skb, WIMAX_GNL_STCH_STATE_OLD, old_state);
|
|
if (result < 0) {
|
|
dev_err(dev, "RE_STCH: Error adding OLD attr: %d\n", result);
|
|
goto error_put;
|
|
}
|
|
result = nla_put_u8(report_skb, WIMAX_GNL_STCH_STATE_NEW, new_state);
|
|
if (result < 0) {
|
|
dev_err(dev, "RE_STCH: Error adding NEW attr: %d\n", result);
|
|
goto error_put;
|
|
}
|
|
result = nla_put_u32(report_skb, WIMAX_GNL_STCH_IFIDX,
|
|
wimax_dev->net_dev->ifindex);
|
|
if (result < 0) {
|
|
dev_err(dev, "RE_STCH: Error adding IFINDEX attribute\n");
|
|
goto error_put;
|
|
}
|
|
d_fnend(3, dev, "(wimax_dev %p new_state %u old_state %u) = %p\n",
|
|
wimax_dev, new_state, old_state, report_skb);
|
|
return report_skb;
|
|
|
|
error_put:
|
|
nlmsg_free(report_skb);
|
|
error_new:
|
|
d_fnend(3, dev, "(wimax_dev %p new_state %u old_state %u) = %d\n",
|
|
wimax_dev, new_state, old_state, result);
|
|
return ERR_PTR(result);
|
|
}
|
|
|
|
|
|
/*
|
|
* Send a Report State Change message (as created with _alloc).
|
|
*
|
|
* @report_skb: as returned by wimax_gnl_re_state_change_alloc()
|
|
* @header: as returned by wimax_gnl_re_state_change_alloc()
|
|
*
|
|
* Returns: 0 if ok, < 0 errno code on error.
|
|
*
|
|
* If the message is NULL, pretend it didn't happen.
|
|
*/
|
|
static
|
|
int wimax_gnl_re_state_change_send(
|
|
struct wimax_dev *wimax_dev, struct sk_buff *report_skb,
|
|
void *header)
|
|
{
|
|
int result = 0;
|
|
struct device *dev = wimax_dev_to_dev(wimax_dev);
|
|
d_fnstart(3, dev, "(wimax_dev %p report_skb %p)\n",
|
|
wimax_dev, report_skb);
|
|
if (report_skb == NULL) {
|
|
result = -ENOMEM;
|
|
goto out;
|
|
}
|
|
genlmsg_end(report_skb, header);
|
|
genlmsg_multicast(&wimax_gnl_family, report_skb, 0, 0, GFP_KERNEL);
|
|
out:
|
|
d_fnend(3, dev, "(wimax_dev %p report_skb %p) = %d\n",
|
|
wimax_dev, report_skb, result);
|
|
return result;
|
|
}
|
|
|
|
|
|
static
|
|
void __check_new_state(enum wimax_st old_state, enum wimax_st new_state,
|
|
unsigned int allowed_states_bm)
|
|
{
|
|
if (WARN_ON(((1 << new_state) & allowed_states_bm) == 0)) {
|
|
pr_err("SW BUG! Forbidden state change %u -> %u\n",
|
|
old_state, new_state);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Set the current state of a WiMAX device [unlocking version of
|
|
* wimax_state_change().
|
|
*/
|
|
void __wimax_state_change(struct wimax_dev *wimax_dev, enum wimax_st new_state)
|
|
{
|
|
struct device *dev = wimax_dev_to_dev(wimax_dev);
|
|
enum wimax_st old_state = wimax_dev->state;
|
|
struct sk_buff *stch_skb;
|
|
void *header;
|
|
|
|
d_fnstart(3, dev, "(wimax_dev %p new_state %u [old %u])\n",
|
|
wimax_dev, new_state, old_state);
|
|
|
|
if (WARN_ON(new_state >= __WIMAX_ST_INVALID)) {
|
|
dev_err(dev, "SW BUG: requesting invalid state %u\n",
|
|
new_state);
|
|
goto out;
|
|
}
|
|
if (old_state == new_state)
|
|
goto out;
|
|
header = NULL; /* gcc complains? can't grok why */
|
|
stch_skb = wimax_gnl_re_state_change_alloc(
|
|
wimax_dev, new_state, old_state, &header);
|
|
|
|
/* Verify the state transition and do exit-from-state actions */
|
|
switch (old_state) {
|
|
case __WIMAX_ST_NULL:
|
|
__check_new_state(old_state, new_state,
|
|
1 << WIMAX_ST_DOWN);
|
|
break;
|
|
case WIMAX_ST_DOWN:
|
|
__check_new_state(old_state, new_state,
|
|
1 << __WIMAX_ST_QUIESCING
|
|
| 1 << WIMAX_ST_UNINITIALIZED
|
|
| 1 << WIMAX_ST_RADIO_OFF);
|
|
break;
|
|
case __WIMAX_ST_QUIESCING:
|
|
__check_new_state(old_state, new_state, 1 << WIMAX_ST_DOWN);
|
|
break;
|
|
case WIMAX_ST_UNINITIALIZED:
|
|
__check_new_state(old_state, new_state,
|
|
1 << __WIMAX_ST_QUIESCING
|
|
| 1 << WIMAX_ST_RADIO_OFF);
|
|
break;
|
|
case WIMAX_ST_RADIO_OFF:
|
|
__check_new_state(old_state, new_state,
|
|
1 << __WIMAX_ST_QUIESCING
|
|
| 1 << WIMAX_ST_READY);
|
|
break;
|
|
case WIMAX_ST_READY:
|
|
__check_new_state(old_state, new_state,
|
|
1 << __WIMAX_ST_QUIESCING
|
|
| 1 << WIMAX_ST_RADIO_OFF
|
|
| 1 << WIMAX_ST_SCANNING
|
|
| 1 << WIMAX_ST_CONNECTING
|
|
| 1 << WIMAX_ST_CONNECTED);
|
|
break;
|
|
case WIMAX_ST_SCANNING:
|
|
__check_new_state(old_state, new_state,
|
|
1 << __WIMAX_ST_QUIESCING
|
|
| 1 << WIMAX_ST_RADIO_OFF
|
|
| 1 << WIMAX_ST_READY
|
|
| 1 << WIMAX_ST_CONNECTING
|
|
| 1 << WIMAX_ST_CONNECTED);
|
|
break;
|
|
case WIMAX_ST_CONNECTING:
|
|
__check_new_state(old_state, new_state,
|
|
1 << __WIMAX_ST_QUIESCING
|
|
| 1 << WIMAX_ST_RADIO_OFF
|
|
| 1 << WIMAX_ST_READY
|
|
| 1 << WIMAX_ST_SCANNING
|
|
| 1 << WIMAX_ST_CONNECTED);
|
|
break;
|
|
case WIMAX_ST_CONNECTED:
|
|
__check_new_state(old_state, new_state,
|
|
1 << __WIMAX_ST_QUIESCING
|
|
| 1 << WIMAX_ST_RADIO_OFF
|
|
| 1 << WIMAX_ST_READY);
|
|
netif_tx_disable(wimax_dev->net_dev);
|
|
netif_carrier_off(wimax_dev->net_dev);
|
|
break;
|
|
case __WIMAX_ST_INVALID:
|
|
default:
|
|
dev_err(dev, "SW BUG: wimax_dev %p is in unknown state %u\n",
|
|
wimax_dev, wimax_dev->state);
|
|
WARN_ON(1);
|
|
goto out;
|
|
}
|
|
|
|
/* Execute the actions of entry to the new state */
|
|
switch (new_state) {
|
|
case __WIMAX_ST_NULL:
|
|
dev_err(dev, "SW BUG: wimax_dev %p entering NULL state "
|
|
"from %u\n", wimax_dev, wimax_dev->state);
|
|
WARN_ON(1); /* Nobody can enter this state */
|
|
break;
|
|
case WIMAX_ST_DOWN:
|
|
break;
|
|
case __WIMAX_ST_QUIESCING:
|
|
break;
|
|
case WIMAX_ST_UNINITIALIZED:
|
|
break;
|
|
case WIMAX_ST_RADIO_OFF:
|
|
break;
|
|
case WIMAX_ST_READY:
|
|
break;
|
|
case WIMAX_ST_SCANNING:
|
|
break;
|
|
case WIMAX_ST_CONNECTING:
|
|
break;
|
|
case WIMAX_ST_CONNECTED:
|
|
netif_carrier_on(wimax_dev->net_dev);
|
|
netif_wake_queue(wimax_dev->net_dev);
|
|
break;
|
|
case __WIMAX_ST_INVALID:
|
|
default:
|
|
BUG();
|
|
}
|
|
__wimax_state_set(wimax_dev, new_state);
|
|
if (!IS_ERR(stch_skb))
|
|
wimax_gnl_re_state_change_send(wimax_dev, stch_skb, header);
|
|
out:
|
|
d_fnend(3, dev, "(wimax_dev %p new_state %u [old %u]) = void\n",
|
|
wimax_dev, new_state, old_state);
|
|
}
|
|
|
|
|
|
/**
|
|
* wimax_state_change - Set the current state of a WiMAX device
|
|
*
|
|
* @wimax_dev: WiMAX device descriptor (properly referenced)
|
|
* @new_state: New state to switch to
|
|
*
|
|
* This implements the state changes for the wimax devices. It will
|
|
*
|
|
* - verify that the state transition is legal (for now it'll just
|
|
* print a warning if not) according to the table in
|
|
* linux/wimax.h's documentation for 'enum wimax_st'.
|
|
*
|
|
* - perform the actions needed for leaving the current state and
|
|
* whichever are needed for entering the new state.
|
|
*
|
|
* - issue a report to user space indicating the new state (and an
|
|
* optional payload with information about the new state).
|
|
*
|
|
* NOTE: @wimax_dev must be locked
|
|
*/
|
|
void wimax_state_change(struct wimax_dev *wimax_dev, enum wimax_st new_state)
|
|
{
|
|
/*
|
|
* A driver cannot take the wimax_dev out of the
|
|
* __WIMAX_ST_NULL state unless by calling wimax_dev_add(). If
|
|
* the wimax_dev's state is still NULL, we ignore any request
|
|
* to change its state because it means it hasn't been yet
|
|
* registered.
|
|
*
|
|
* There is no need to complain about it, as routines that
|
|
* call this might be shared from different code paths that
|
|
* are called before or after wimax_dev_add() has done its
|
|
* job.
|
|
*/
|
|
mutex_lock(&wimax_dev->mutex);
|
|
if (wimax_dev->state > __WIMAX_ST_NULL)
|
|
__wimax_state_change(wimax_dev, new_state);
|
|
mutex_unlock(&wimax_dev->mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(wimax_state_change);
|
|
|
|
|
|
/**
|
|
* wimax_state_get() - Return the current state of a WiMAX device
|
|
*
|
|
* @wimax_dev: WiMAX device descriptor
|
|
*
|
|
* Returns: Current state of the device according to its driver.
|
|
*/
|
|
enum wimax_st wimax_state_get(struct wimax_dev *wimax_dev)
|
|
{
|
|
enum wimax_st state;
|
|
mutex_lock(&wimax_dev->mutex);
|
|
state = wimax_dev->state;
|
|
mutex_unlock(&wimax_dev->mutex);
|
|
return state;
|
|
}
|
|
EXPORT_SYMBOL_GPL(wimax_state_get);
|
|
|
|
|
|
/**
|
|
* wimax_dev_init - initialize a newly allocated instance
|
|
*
|
|
* @wimax_dev: WiMAX device descriptor to initialize.
|
|
*
|
|
* Initializes fields of a freshly allocated @wimax_dev instance. This
|
|
* function assumes that after allocation, the memory occupied by
|
|
* @wimax_dev was zeroed.
|
|
*/
|
|
void wimax_dev_init(struct wimax_dev *wimax_dev)
|
|
{
|
|
INIT_LIST_HEAD(&wimax_dev->id_table_node);
|
|
__wimax_state_set(wimax_dev, __WIMAX_ST_NULL);
|
|
mutex_init(&wimax_dev->mutex);
|
|
mutex_init(&wimax_dev->mutex_reset);
|
|
}
|
|
EXPORT_SYMBOL_GPL(wimax_dev_init);
|
|
|
|
static const struct nla_policy wimax_gnl_policy[WIMAX_GNL_ATTR_MAX + 1] = {
|
|
[WIMAX_GNL_RESET_IFIDX] = { .type = NLA_U32, },
|
|
[WIMAX_GNL_RFKILL_IFIDX] = { .type = NLA_U32, },
|
|
[WIMAX_GNL_RFKILL_STATE] = {
|
|
.type = NLA_U32 /* enum wimax_rf_state */
|
|
},
|
|
[WIMAX_GNL_STGET_IFIDX] = { .type = NLA_U32, },
|
|
[WIMAX_GNL_MSG_IFIDX] = { .type = NLA_U32, },
|
|
[WIMAX_GNL_MSG_DATA] = {
|
|
.type = NLA_UNSPEC, /* libnl doesn't grok BINARY yet */
|
|
},
|
|
};
|
|
|
|
static const struct genl_ops wimax_gnl_ops[] = {
|
|
{
|
|
.cmd = WIMAX_GNL_OP_MSG_FROM_USER,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.doit = wimax_gnl_doit_msg_from_user,
|
|
},
|
|
{
|
|
.cmd = WIMAX_GNL_OP_RESET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.doit = wimax_gnl_doit_reset,
|
|
},
|
|
{
|
|
.cmd = WIMAX_GNL_OP_RFKILL,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.doit = wimax_gnl_doit_rfkill,
|
|
},
|
|
{
|
|
.cmd = WIMAX_GNL_OP_STATE_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.doit = wimax_gnl_doit_state_get,
|
|
},
|
|
};
|
|
|
|
|
|
static
|
|
size_t wimax_addr_scnprint(char *addr_str, size_t addr_str_size,
|
|
unsigned char *addr, size_t addr_len)
|
|
{
|
|
unsigned int cnt, total;
|
|
|
|
for (total = cnt = 0; cnt < addr_len; cnt++)
|
|
total += scnprintf(addr_str + total, addr_str_size - total,
|
|
"%02x%c", addr[cnt],
|
|
cnt == addr_len - 1 ? '\0' : ':');
|
|
return total;
|
|
}
|
|
|
|
|
|
/**
|
|
* wimax_dev_add - Register a new WiMAX device
|
|
*
|
|
* @wimax_dev: WiMAX device descriptor (as embedded in your @net_dev's
|
|
* priv data). You must have called wimax_dev_init() on it before.
|
|
*
|
|
* @net_dev: net device the @wimax_dev is associated with. The
|
|
* function expects SET_NETDEV_DEV() and register_netdev() were
|
|
* already called on it.
|
|
*
|
|
* Registers the new WiMAX device, sets up the user-kernel control
|
|
* interface (generic netlink) and common WiMAX infrastructure.
|
|
*
|
|
* Note that the parts that will allow interaction with user space are
|
|
* setup at the very end, when the rest is in place, as once that
|
|
* happens, the driver might get user space control requests via
|
|
* netlink or from debugfs that might translate into calls into
|
|
* wimax_dev->op_*().
|
|
*/
|
|
int wimax_dev_add(struct wimax_dev *wimax_dev, struct net_device *net_dev)
|
|
{
|
|
int result;
|
|
struct device *dev = net_dev->dev.parent;
|
|
char addr_str[32];
|
|
|
|
d_fnstart(3, dev, "(wimax_dev %p net_dev %p)\n", wimax_dev, net_dev);
|
|
|
|
/* Do the RFKILL setup before locking, as RFKILL will call
|
|
* into our functions.
|
|
*/
|
|
wimax_dev->net_dev = net_dev;
|
|
result = wimax_rfkill_add(wimax_dev);
|
|
if (result < 0)
|
|
goto error_rfkill_add;
|
|
|
|
/* Set up user-space interaction */
|
|
mutex_lock(&wimax_dev->mutex);
|
|
wimax_id_table_add(wimax_dev);
|
|
wimax_debugfs_add(wimax_dev);
|
|
|
|
__wimax_state_set(wimax_dev, WIMAX_ST_DOWN);
|
|
mutex_unlock(&wimax_dev->mutex);
|
|
|
|
wimax_addr_scnprint(addr_str, sizeof(addr_str),
|
|
net_dev->dev_addr, net_dev->addr_len);
|
|
dev_err(dev, "WiMAX interface %s (%s) ready\n",
|
|
net_dev->name, addr_str);
|
|
d_fnend(3, dev, "(wimax_dev %p net_dev %p) = 0\n", wimax_dev, net_dev);
|
|
return 0;
|
|
|
|
error_rfkill_add:
|
|
d_fnend(3, dev, "(wimax_dev %p net_dev %p) = %d\n",
|
|
wimax_dev, net_dev, result);
|
|
return result;
|
|
}
|
|
EXPORT_SYMBOL_GPL(wimax_dev_add);
|
|
|
|
|
|
/**
|
|
* wimax_dev_rm - Unregister an existing WiMAX device
|
|
*
|
|
* @wimax_dev: WiMAX device descriptor
|
|
*
|
|
* Unregisters a WiMAX device previously registered for use with
|
|
* wimax_add_rm().
|
|
*
|
|
* IMPORTANT! Must call before calling unregister_netdev().
|
|
*
|
|
* After this function returns, you will not get any more user space
|
|
* control requests (via netlink or debugfs) and thus to wimax_dev->ops.
|
|
*
|
|
* Reentrancy control is ensured by setting the state to
|
|
* %__WIMAX_ST_QUIESCING. rfkill operations coming through
|
|
* wimax_*rfkill*() will be stopped by the quiescing state; ops coming
|
|
* from the rfkill subsystem will be stopped by the support being
|
|
* removed by wimax_rfkill_rm().
|
|
*/
|
|
void wimax_dev_rm(struct wimax_dev *wimax_dev)
|
|
{
|
|
d_fnstart(3, NULL, "(wimax_dev %p)\n", wimax_dev);
|
|
|
|
mutex_lock(&wimax_dev->mutex);
|
|
__wimax_state_change(wimax_dev, __WIMAX_ST_QUIESCING);
|
|
wimax_debugfs_rm(wimax_dev);
|
|
wimax_id_table_rm(wimax_dev);
|
|
__wimax_state_change(wimax_dev, WIMAX_ST_DOWN);
|
|
mutex_unlock(&wimax_dev->mutex);
|
|
wimax_rfkill_rm(wimax_dev);
|
|
d_fnend(3, NULL, "(wimax_dev %p) = void\n", wimax_dev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(wimax_dev_rm);
|
|
|
|
|
|
/* Debug framework control of debug levels */
|
|
struct d_level D_LEVEL[] = {
|
|
D_SUBMODULE_DEFINE(debugfs),
|
|
D_SUBMODULE_DEFINE(id_table),
|
|
D_SUBMODULE_DEFINE(op_msg),
|
|
D_SUBMODULE_DEFINE(op_reset),
|
|
D_SUBMODULE_DEFINE(op_rfkill),
|
|
D_SUBMODULE_DEFINE(op_state_get),
|
|
D_SUBMODULE_DEFINE(stack),
|
|
};
|
|
size_t D_LEVEL_SIZE = ARRAY_SIZE(D_LEVEL);
|
|
|
|
|
|
static const struct genl_multicast_group wimax_gnl_mcgrps[] = {
|
|
{ .name = "msg", },
|
|
};
|
|
|
|
struct genl_family wimax_gnl_family __ro_after_init = {
|
|
.name = "WiMAX",
|
|
.version = WIMAX_GNL_VERSION,
|
|
.hdrsize = 0,
|
|
.maxattr = WIMAX_GNL_ATTR_MAX,
|
|
.policy = wimax_gnl_policy,
|
|
.module = THIS_MODULE,
|
|
.ops = wimax_gnl_ops,
|
|
.n_ops = ARRAY_SIZE(wimax_gnl_ops),
|
|
.mcgrps = wimax_gnl_mcgrps,
|
|
.n_mcgrps = ARRAY_SIZE(wimax_gnl_mcgrps),
|
|
};
|
|
|
|
|
|
|
|
/* Shutdown the wimax stack */
|
|
static
|
|
int __init wimax_subsys_init(void)
|
|
{
|
|
int result;
|
|
|
|
d_fnstart(4, NULL, "()\n");
|
|
d_parse_params(D_LEVEL, D_LEVEL_SIZE, wimax_debug_params,
|
|
"wimax.debug");
|
|
|
|
result = genl_register_family(&wimax_gnl_family);
|
|
if (unlikely(result < 0)) {
|
|
pr_err("cannot register generic netlink family: %d\n", result);
|
|
goto error_register_family;
|
|
}
|
|
|
|
d_fnend(4, NULL, "() = 0\n");
|
|
return 0;
|
|
|
|
error_register_family:
|
|
d_fnend(4, NULL, "() = %d\n", result);
|
|
return result;
|
|
|
|
}
|
|
module_init(wimax_subsys_init);
|
|
|
|
|
|
/* Shutdown the wimax stack */
|
|
static
|
|
void __exit wimax_subsys_exit(void)
|
|
{
|
|
wimax_id_table_release();
|
|
genl_unregister_family(&wimax_gnl_family);
|
|
}
|
|
module_exit(wimax_subsys_exit);
|
|
|
|
MODULE_AUTHOR("Intel Corporation <linux-wimax@intel.com>");
|
|
MODULE_DESCRIPTION("Linux WiMAX stack");
|
|
MODULE_LICENSE("GPL");
|