1083 lines
30 KiB
C
1083 lines
30 KiB
C
/*
|
|
* Copyright (c) 2008, 2009 open80211s Ltd.
|
|
* Authors: Luis Carlos Cobo <luisca@cozybit.com>
|
|
* Javier Cardona <javier@cozybit.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/slab.h>
|
|
#include <asm/unaligned.h>
|
|
#include "ieee80211_i.h"
|
|
#include "mesh.h"
|
|
|
|
static int mesh_allocated;
|
|
static struct kmem_cache *rm_cache;
|
|
|
|
bool mesh_action_is_path_sel(struct ieee80211_mgmt *mgmt)
|
|
{
|
|
return (mgmt->u.action.u.mesh_action.action_code ==
|
|
WLAN_MESH_ACTION_HWMP_PATH_SELECTION);
|
|
}
|
|
|
|
void ieee80211s_init(void)
|
|
{
|
|
mesh_pathtbl_init();
|
|
mesh_allocated = 1;
|
|
rm_cache = kmem_cache_create("mesh_rmc", sizeof(struct rmc_entry),
|
|
0, 0, NULL);
|
|
}
|
|
|
|
void ieee80211s_stop(void)
|
|
{
|
|
if (!mesh_allocated)
|
|
return;
|
|
mesh_pathtbl_unregister();
|
|
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;
|
|
|
|
set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
|
|
|
|
ieee80211_queue_work(&local->hw, &sdata->work);
|
|
}
|
|
|
|
/**
|
|
* mesh_matches_local - check if the config of a mesh point matches ours
|
|
*
|
|
* @sdata: local mesh subif
|
|
* @ie: information elements of a management frame from the mesh peer
|
|
*
|
|
* This function checks if the mesh configuration of a mesh point matches the
|
|
* local mesh configuration, i.e. if both nodes belong to the same mesh network.
|
|
*/
|
|
bool mesh_matches_local(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee802_11_elems *ie)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
u32 basic_rates = 0;
|
|
struct cfg80211_chan_def sta_chan_def;
|
|
|
|
/*
|
|
* As support for each feature is added, check for matching
|
|
* - On mesh config capabilities
|
|
* - Power Save Support En
|
|
* - Sync support enabled
|
|
* - Sync support active
|
|
* - Sync support required from peer
|
|
* - MDA enabled
|
|
* - Power management control on fc
|
|
*/
|
|
if (!(ifmsh->mesh_id_len == ie->mesh_id_len &&
|
|
memcmp(ifmsh->mesh_id, ie->mesh_id, ie->mesh_id_len) == 0 &&
|
|
(ifmsh->mesh_pp_id == ie->mesh_config->meshconf_psel) &&
|
|
(ifmsh->mesh_pm_id == ie->mesh_config->meshconf_pmetric) &&
|
|
(ifmsh->mesh_cc_id == ie->mesh_config->meshconf_congest) &&
|
|
(ifmsh->mesh_sp_id == ie->mesh_config->meshconf_synch) &&
|
|
(ifmsh->mesh_auth_id == ie->mesh_config->meshconf_auth)))
|
|
return false;
|
|
|
|
ieee80211_sta_get_rates(sdata, ie, ieee80211_get_sdata_band(sdata),
|
|
&basic_rates);
|
|
|
|
if (sdata->vif.bss_conf.basic_rates != basic_rates)
|
|
return false;
|
|
|
|
ieee80211_ht_oper_to_chandef(sdata->vif.bss_conf.chandef.chan,
|
|
ie->ht_operation, &sta_chan_def);
|
|
|
|
if (!cfg80211_chandef_compatible(&sdata->vif.bss_conf.chandef,
|
|
&sta_chan_def))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* mesh_peer_accepts_plinks - check if an mp is willing to establish peer links
|
|
*
|
|
* @ie: information elements of a management frame from the mesh peer
|
|
*/
|
|
bool mesh_peer_accepts_plinks(struct ieee802_11_elems *ie)
|
|
{
|
|
return (ie->mesh_config->meshconf_cap &
|
|
IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS) != 0;
|
|
}
|
|
|
|
/**
|
|
* mesh_accept_plinks_update - update accepting_plink in local mesh beacons
|
|
*
|
|
* @sdata: mesh interface in which mesh beacons are going to be updated
|
|
*
|
|
* Returns: beacon changed flag if the beacon content changed.
|
|
*/
|
|
u32 mesh_accept_plinks_update(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
bool free_plinks;
|
|
u32 changed = 0;
|
|
|
|
/* In case mesh_plink_free_count > 0 and mesh_plinktbl_capacity == 0,
|
|
* the mesh interface might be able to establish plinks with peers that
|
|
* are already on the table but are not on PLINK_ESTAB state. However,
|
|
* in general the mesh interface is not accepting peer link requests
|
|
* from new peers, and that must be reflected in the beacon
|
|
*/
|
|
free_plinks = mesh_plink_availables(sdata);
|
|
|
|
if (free_plinks != sdata->u.mesh.accepting_plinks) {
|
|
sdata->u.mesh.accepting_plinks = free_plinks;
|
|
changed = BSS_CHANGED_BEACON;
|
|
}
|
|
|
|
return changed;
|
|
}
|
|
|
|
/*
|
|
* mesh_sta_cleanup - clean up any mesh sta state
|
|
*
|
|
* @sta: mesh sta to clean up.
|
|
*/
|
|
void mesh_sta_cleanup(struct sta_info *sta)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata = sta->sdata;
|
|
u32 changed;
|
|
|
|
/*
|
|
* maybe userspace handles peer allocation and peering, but in either
|
|
* case the beacon is still generated by the kernel and we might need
|
|
* an update.
|
|
*/
|
|
changed = mesh_accept_plinks_update(sdata);
|
|
if (!sdata->u.mesh.user_mpm) {
|
|
changed |= mesh_plink_deactivate(sta);
|
|
del_timer_sync(&sta->plink_timer);
|
|
}
|
|
|
|
if (changed)
|
|
ieee80211_mbss_info_change_notify(sdata, changed);
|
|
}
|
|
|
|
int mesh_rmc_init(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
int i;
|
|
|
|
sdata->u.mesh.rmc = kmalloc(sizeof(struct mesh_rmc), GFP_KERNEL);
|
|
if (!sdata->u.mesh.rmc)
|
|
return -ENOMEM;
|
|
sdata->u.mesh.rmc->idx_mask = RMC_BUCKETS - 1;
|
|
for (i = 0; i < RMC_BUCKETS; i++)
|
|
INIT_LIST_HEAD(&sdata->u.mesh.rmc->bucket[i]);
|
|
return 0;
|
|
}
|
|
|
|
void mesh_rmc_free(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct mesh_rmc *rmc = sdata->u.mesh.rmc;
|
|
struct rmc_entry *p, *n;
|
|
int i;
|
|
|
|
if (!sdata->u.mesh.rmc)
|
|
return;
|
|
|
|
for (i = 0; i < RMC_BUCKETS; i++) {
|
|
list_for_each_entry_safe(p, n, &rmc->bucket[i], list) {
|
|
list_del(&p->list);
|
|
kmem_cache_free(rm_cache, p);
|
|
}
|
|
}
|
|
|
|
kfree(rmc);
|
|
sdata->u.mesh.rmc = NULL;
|
|
}
|
|
|
|
/**
|
|
* mesh_rmc_check - Check frame in recent multicast cache and add if absent.
|
|
*
|
|
* @sdata: interface
|
|
* @sa: source address
|
|
* @mesh_hdr: mesh_header
|
|
*
|
|
* Returns: 0 if the frame is not in the cache, nonzero otherwise.
|
|
*
|
|
* Checks using the source address and the mesh sequence number if we have
|
|
* received this frame lately. If the frame is not in the cache, it is added to
|
|
* it.
|
|
*/
|
|
int mesh_rmc_check(struct ieee80211_sub_if_data *sdata,
|
|
const u8 *sa, struct ieee80211s_hdr *mesh_hdr)
|
|
{
|
|
struct mesh_rmc *rmc = sdata->u.mesh.rmc;
|
|
u32 seqnum = 0;
|
|
int entries = 0;
|
|
u8 idx;
|
|
struct rmc_entry *p, *n;
|
|
|
|
/* Don't care about endianness since only match matters */
|
|
memcpy(&seqnum, &mesh_hdr->seqnum, sizeof(mesh_hdr->seqnum));
|
|
idx = le32_to_cpu(mesh_hdr->seqnum) & rmc->idx_mask;
|
|
list_for_each_entry_safe(p, n, &rmc->bucket[idx], list) {
|
|
++entries;
|
|
if (time_after(jiffies, p->exp_time) ||
|
|
entries == RMC_QUEUE_MAX_LEN) {
|
|
list_del(&p->list);
|
|
kmem_cache_free(rm_cache, p);
|
|
--entries;
|
|
} else if ((seqnum == p->seqnum) && ether_addr_equal(sa, p->sa))
|
|
return -1;
|
|
}
|
|
|
|
p = kmem_cache_alloc(rm_cache, GFP_ATOMIC);
|
|
if (!p)
|
|
return 0;
|
|
|
|
p->seqnum = seqnum;
|
|
p->exp_time = jiffies + RMC_TIMEOUT;
|
|
memcpy(p->sa, sa, ETH_ALEN);
|
|
list_add(&p->list, &rmc->bucket[idx]);
|
|
return 0;
|
|
}
|
|
|
|
int mesh_add_meshconf_ie(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
u8 *pos, neighbors;
|
|
u8 meshconf_len = sizeof(struct ieee80211_meshconf_ie);
|
|
|
|
if (skb_tailroom(skb) < 2 + meshconf_len)
|
|
return -ENOMEM;
|
|
|
|
pos = skb_put(skb, 2 + meshconf_len);
|
|
*pos++ = WLAN_EID_MESH_CONFIG;
|
|
*pos++ = meshconf_len;
|
|
|
|
/* Active path selection protocol ID */
|
|
*pos++ = ifmsh->mesh_pp_id;
|
|
/* Active path selection metric ID */
|
|
*pos++ = ifmsh->mesh_pm_id;
|
|
/* Congestion control mode identifier */
|
|
*pos++ = ifmsh->mesh_cc_id;
|
|
/* Synchronization protocol identifier */
|
|
*pos++ = ifmsh->mesh_sp_id;
|
|
/* Authentication Protocol identifier */
|
|
*pos++ = ifmsh->mesh_auth_id;
|
|
/* Mesh Formation Info - number of neighbors */
|
|
neighbors = atomic_read(&ifmsh->estab_plinks);
|
|
neighbors = min_t(int, neighbors, IEEE80211_MAX_MESH_PEERINGS);
|
|
*pos++ = neighbors << 1;
|
|
/* Mesh capability */
|
|
*pos = 0x00;
|
|
*pos |= ifmsh->mshcfg.dot11MeshForwarding ?
|
|
IEEE80211_MESHCONF_CAPAB_FORWARDING : 0x00;
|
|
*pos |= ifmsh->accepting_plinks ?
|
|
IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
|
|
/* Mesh PS mode. See IEEE802.11-2012 8.4.2.100.8 */
|
|
*pos |= ifmsh->ps_peers_deep_sleep ?
|
|
IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL : 0x00;
|
|
*pos++ |= ifmsh->adjusting_tbtt ?
|
|
IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING : 0x00;
|
|
*pos++ = 0x00;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mesh_add_meshid_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
u8 *pos;
|
|
|
|
if (skb_tailroom(skb) < 2 + ifmsh->mesh_id_len)
|
|
return -ENOMEM;
|
|
|
|
pos = skb_put(skb, 2 + ifmsh->mesh_id_len);
|
|
*pos++ = WLAN_EID_MESH_ID;
|
|
*pos++ = ifmsh->mesh_id_len;
|
|
if (ifmsh->mesh_id_len)
|
|
memcpy(pos, ifmsh->mesh_id, ifmsh->mesh_id_len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mesh_add_awake_window_ie(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
u8 *pos;
|
|
|
|
/* see IEEE802.11-2012 13.14.6 */
|
|
if (ifmsh->ps_peers_light_sleep == 0 &&
|
|
ifmsh->ps_peers_deep_sleep == 0 &&
|
|
ifmsh->nonpeer_pm == NL80211_MESH_POWER_ACTIVE)
|
|
return 0;
|
|
|
|
if (skb_tailroom(skb) < 4)
|
|
return -ENOMEM;
|
|
|
|
pos = skb_put(skb, 2 + 2);
|
|
*pos++ = WLAN_EID_MESH_AWAKE_WINDOW;
|
|
*pos++ = 2;
|
|
put_unaligned_le16(ifmsh->mshcfg.dot11MeshAwakeWindowDuration, pos);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mesh_add_vendor_ies(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
u8 offset, len;
|
|
const u8 *data;
|
|
|
|
if (!ifmsh->ie || !ifmsh->ie_len)
|
|
return 0;
|
|
|
|
/* fast-forward to vendor IEs */
|
|
offset = ieee80211_ie_split_vendor(ifmsh->ie, ifmsh->ie_len, 0);
|
|
|
|
if (offset) {
|
|
len = ifmsh->ie_len - offset;
|
|
data = ifmsh->ie + offset;
|
|
if (skb_tailroom(skb) < len)
|
|
return -ENOMEM;
|
|
memcpy(skb_put(skb, len), data, len);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mesh_add_rsn_ie(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
u8 len = 0;
|
|
const u8 *data;
|
|
|
|
if (!ifmsh->ie || !ifmsh->ie_len)
|
|
return 0;
|
|
|
|
/* find RSN IE */
|
|
data = ifmsh->ie;
|
|
while (data < ifmsh->ie + ifmsh->ie_len) {
|
|
if (*data == WLAN_EID_RSN) {
|
|
len = data[1] + 2;
|
|
break;
|
|
}
|
|
data++;
|
|
}
|
|
|
|
if (len) {
|
|
if (skb_tailroom(skb) < len)
|
|
return -ENOMEM;
|
|
memcpy(skb_put(skb, len), data, len);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mesh_add_ds_params_ie(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_chanctx_conf *chanctx_conf;
|
|
struct ieee80211_channel *chan;
|
|
u8 *pos;
|
|
|
|
if (skb_tailroom(skb) < 3)
|
|
return -ENOMEM;
|
|
|
|
rcu_read_lock();
|
|
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
|
|
if (WARN_ON(!chanctx_conf)) {
|
|
rcu_read_unlock();
|
|
return -EINVAL;
|
|
}
|
|
chan = chanctx_conf->def.chan;
|
|
rcu_read_unlock();
|
|
|
|
pos = skb_put(skb, 2 + 1);
|
|
*pos++ = WLAN_EID_DS_PARAMS;
|
|
*pos++ = 1;
|
|
*pos++ = ieee80211_frequency_to_channel(chan->center_freq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mesh_add_ht_cap_ie(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
|
|
struct ieee80211_supported_band *sband;
|
|
u8 *pos;
|
|
|
|
sband = local->hw.wiphy->bands[band];
|
|
if (!sband->ht_cap.ht_supported ||
|
|
sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT ||
|
|
sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_5 ||
|
|
sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_10)
|
|
return 0;
|
|
|
|
if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_cap))
|
|
return -ENOMEM;
|
|
|
|
pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_cap));
|
|
ieee80211_ie_build_ht_cap(pos, &sband->ht_cap, sband->ht_cap.cap);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mesh_add_ht_oper_ie(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_chanctx_conf *chanctx_conf;
|
|
struct ieee80211_channel *channel;
|
|
enum nl80211_channel_type channel_type =
|
|
cfg80211_get_chandef_type(&sdata->vif.bss_conf.chandef);
|
|
struct ieee80211_supported_band *sband;
|
|
struct ieee80211_sta_ht_cap *ht_cap;
|
|
u8 *pos;
|
|
|
|
rcu_read_lock();
|
|
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
|
|
if (WARN_ON(!chanctx_conf)) {
|
|
rcu_read_unlock();
|
|
return -EINVAL;
|
|
}
|
|
channel = chanctx_conf->def.chan;
|
|
rcu_read_unlock();
|
|
|
|
sband = local->hw.wiphy->bands[channel->band];
|
|
ht_cap = &sband->ht_cap;
|
|
|
|
if (!ht_cap->ht_supported || channel_type == NL80211_CHAN_NO_HT)
|
|
return 0;
|
|
|
|
if (skb_tailroom(skb) < 2 + sizeof(struct ieee80211_ht_operation))
|
|
return -ENOMEM;
|
|
|
|
pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_operation));
|
|
ieee80211_ie_build_ht_oper(pos, ht_cap, &sdata->vif.bss_conf.chandef,
|
|
sdata->vif.bss_conf.ht_operation_mode);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void ieee80211_mesh_path_timer(unsigned long data)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
(struct ieee80211_sub_if_data *) data;
|
|
|
|
ieee80211_queue_work(&sdata->local->hw, &sdata->work);
|
|
}
|
|
|
|
static void ieee80211_mesh_path_root_timer(unsigned long data)
|
|
{
|
|
struct ieee80211_sub_if_data *sdata =
|
|
(struct ieee80211_sub_if_data *) data;
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
|
|
set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
|
|
|
|
ieee80211_queue_work(&sdata->local->hw, &sdata->work);
|
|
}
|
|
|
|
void ieee80211_mesh_root_setup(struct ieee80211_if_mesh *ifmsh)
|
|
{
|
|
if (ifmsh->mshcfg.dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)
|
|
set_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
|
|
else {
|
|
clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags);
|
|
/* stop running timer */
|
|
del_timer_sync(&ifmsh->mesh_path_root_timer);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ieee80211_fill_mesh_addresses - fill addresses of a locally originated mesh frame
|
|
* @hdr: 802.11 frame header
|
|
* @fc: frame control field
|
|
* @meshda: destination address in the mesh
|
|
* @meshsa: source address address in the mesh. Same as TA, as frame is
|
|
* locally originated.
|
|
*
|
|
* Return the length of the 802.11 (does not include a mesh control header)
|
|
*/
|
|
int ieee80211_fill_mesh_addresses(struct ieee80211_hdr *hdr, __le16 *fc,
|
|
const u8 *meshda, const u8 *meshsa)
|
|
{
|
|
if (is_multicast_ether_addr(meshda)) {
|
|
*fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS);
|
|
/* DA TA SA */
|
|
memcpy(hdr->addr1, meshda, ETH_ALEN);
|
|
memcpy(hdr->addr2, meshsa, ETH_ALEN);
|
|
memcpy(hdr->addr3, meshsa, ETH_ALEN);
|
|
return 24;
|
|
} else {
|
|
*fc |= cpu_to_le16(IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
|
|
/* RA TA DA SA */
|
|
memset(hdr->addr1, 0, ETH_ALEN); /* RA is resolved later */
|
|
memcpy(hdr->addr2, meshsa, ETH_ALEN);
|
|
memcpy(hdr->addr3, meshda, ETH_ALEN);
|
|
memcpy(hdr->addr4, meshsa, ETH_ALEN);
|
|
return 30;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* ieee80211_new_mesh_header - create a new mesh header
|
|
* @sdata: mesh interface to be used
|
|
* @meshhdr: uninitialized mesh header
|
|
* @addr4or5: 1st address in the ae header, which may correspond to address 4
|
|
* (if addr6 is NULL) or address 5 (if addr6 is present). It may
|
|
* be NULL.
|
|
* @addr6: 2nd address in the ae header, which corresponds to addr6 of the
|
|
* mesh frame
|
|
*
|
|
* Return the header length.
|
|
*/
|
|
int ieee80211_new_mesh_header(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211s_hdr *meshhdr,
|
|
const char *addr4or5, const char *addr6)
|
|
{
|
|
if (WARN_ON(!addr4or5 && addr6))
|
|
return 0;
|
|
|
|
memset(meshhdr, 0, sizeof(*meshhdr));
|
|
|
|
meshhdr->ttl = sdata->u.mesh.mshcfg.dot11MeshTTL;
|
|
|
|
/* FIXME: racy -- TX on multiple queues can be concurrent */
|
|
put_unaligned(cpu_to_le32(sdata->u.mesh.mesh_seqnum), &meshhdr->seqnum);
|
|
sdata->u.mesh.mesh_seqnum++;
|
|
|
|
if (addr4or5 && !addr6) {
|
|
meshhdr->flags |= MESH_FLAGS_AE_A4;
|
|
memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
|
|
return 2 * ETH_ALEN;
|
|
} else if (addr4or5 && addr6) {
|
|
meshhdr->flags |= MESH_FLAGS_AE_A5_A6;
|
|
memcpy(meshhdr->eaddr1, addr4or5, ETH_ALEN);
|
|
memcpy(meshhdr->eaddr2, addr6, ETH_ALEN);
|
|
return 3 * ETH_ALEN;
|
|
}
|
|
|
|
return ETH_ALEN;
|
|
}
|
|
|
|
static void ieee80211_mesh_housekeeping(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
u32 changed;
|
|
|
|
ieee80211_sta_expire(sdata, ifmsh->mshcfg.plink_timeout * HZ);
|
|
mesh_path_expire(sdata);
|
|
|
|
changed = mesh_accept_plinks_update(sdata);
|
|
ieee80211_mbss_info_change_notify(sdata, changed);
|
|
|
|
mod_timer(&ifmsh->housekeeping_timer,
|
|
round_jiffies(jiffies +
|
|
IEEE80211_MESH_HOUSEKEEPING_INTERVAL));
|
|
}
|
|
|
|
static void ieee80211_mesh_rootpath(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
u32 interval;
|
|
|
|
mesh_path_tx_root_frame(sdata);
|
|
|
|
if (ifmsh->mshcfg.dot11MeshHWMPRootMode == IEEE80211_PROACTIVE_RANN)
|
|
interval = ifmsh->mshcfg.dot11MeshHWMPRannInterval;
|
|
else
|
|
interval = ifmsh->mshcfg.dot11MeshHWMProotInterval;
|
|
|
|
mod_timer(&ifmsh->mesh_path_root_timer,
|
|
round_jiffies(TU_TO_EXP_TIME(interval)));
|
|
}
|
|
|
|
static int
|
|
ieee80211_mesh_build_beacon(struct ieee80211_if_mesh *ifmsh)
|
|
{
|
|
struct beacon_data *bcn;
|
|
int head_len, tail_len;
|
|
struct sk_buff *skb;
|
|
struct ieee80211_mgmt *mgmt;
|
|
struct ieee80211_chanctx_conf *chanctx_conf;
|
|
enum ieee80211_band band;
|
|
u8 *pos;
|
|
struct ieee80211_sub_if_data *sdata;
|
|
int hdr_len = offsetof(struct ieee80211_mgmt, u.beacon) +
|
|
sizeof(mgmt->u.beacon);
|
|
|
|
sdata = container_of(ifmsh, struct ieee80211_sub_if_data, u.mesh);
|
|
rcu_read_lock();
|
|
chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
|
|
band = chanctx_conf->def.chan->band;
|
|
rcu_read_unlock();
|
|
|
|
head_len = hdr_len +
|
|
2 + /* NULL SSID */
|
|
2 + 8 + /* supported rates */
|
|
2 + 3; /* DS params */
|
|
tail_len = 2 + (IEEE80211_MAX_SUPP_RATES - 8) +
|
|
2 + sizeof(struct ieee80211_ht_cap) +
|
|
2 + sizeof(struct ieee80211_ht_operation) +
|
|
2 + ifmsh->mesh_id_len +
|
|
2 + sizeof(struct ieee80211_meshconf_ie) +
|
|
2 + sizeof(__le16) + /* awake window */
|
|
ifmsh->ie_len;
|
|
|
|
bcn = kzalloc(sizeof(*bcn) + head_len + tail_len, GFP_KERNEL);
|
|
/* need an skb for IE builders to operate on */
|
|
skb = dev_alloc_skb(max(head_len, tail_len));
|
|
|
|
if (!bcn || !skb)
|
|
goto out_free;
|
|
|
|
/*
|
|
* pointers go into the block we allocated,
|
|
* memory is | beacon_data | head | tail |
|
|
*/
|
|
bcn->head = ((u8 *) bcn) + sizeof(*bcn);
|
|
|
|
/* fill in the head */
|
|
mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len);
|
|
memset(mgmt, 0, hdr_len);
|
|
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
|
|
IEEE80211_STYPE_BEACON);
|
|
eth_broadcast_addr(mgmt->da);
|
|
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
|
|
memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
|
|
ieee80211_mps_set_frame_flags(sdata, NULL, (void *) mgmt);
|
|
mgmt->u.beacon.beacon_int =
|
|
cpu_to_le16(sdata->vif.bss_conf.beacon_int);
|
|
mgmt->u.beacon.capab_info |= cpu_to_le16(
|
|
sdata->u.mesh.security ? WLAN_CAPABILITY_PRIVACY : 0);
|
|
|
|
pos = skb_put(skb, 2);
|
|
*pos++ = WLAN_EID_SSID;
|
|
*pos++ = 0x0;
|
|
|
|
if (ieee80211_add_srates_ie(sdata, skb, true, band) ||
|
|
mesh_add_ds_params_ie(sdata, skb))
|
|
goto out_free;
|
|
|
|
bcn->head_len = skb->len;
|
|
memcpy(bcn->head, skb->data, bcn->head_len);
|
|
|
|
/* now the tail */
|
|
skb_trim(skb, 0);
|
|
bcn->tail = bcn->head + bcn->head_len;
|
|
|
|
if (ieee80211_add_ext_srates_ie(sdata, skb, true, band) ||
|
|
mesh_add_rsn_ie(sdata, skb) ||
|
|
mesh_add_ht_cap_ie(sdata, skb) ||
|
|
mesh_add_ht_oper_ie(sdata, skb) ||
|
|
mesh_add_meshid_ie(sdata, skb) ||
|
|
mesh_add_meshconf_ie(sdata, skb) ||
|
|
mesh_add_awake_window_ie(sdata, skb) ||
|
|
mesh_add_vendor_ies(sdata, skb))
|
|
goto out_free;
|
|
|
|
bcn->tail_len = skb->len;
|
|
memcpy(bcn->tail, skb->data, bcn->tail_len);
|
|
|
|
dev_kfree_skb(skb);
|
|
rcu_assign_pointer(ifmsh->beacon, bcn);
|
|
return 0;
|
|
out_free:
|
|
kfree(bcn);
|
|
dev_kfree_skb(skb);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
static int
|
|
ieee80211_mesh_rebuild_beacon(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct beacon_data *old_bcn;
|
|
int ret;
|
|
|
|
old_bcn = rcu_dereference_protected(sdata->u.mesh.beacon,
|
|
lockdep_is_held(&sdata->wdev.mtx));
|
|
ret = ieee80211_mesh_build_beacon(&sdata->u.mesh);
|
|
if (ret)
|
|
/* just reuse old beacon */
|
|
return ret;
|
|
|
|
if (old_bcn)
|
|
kfree_rcu(old_bcn, rcu_head);
|
|
return 0;
|
|
}
|
|
|
|
void ieee80211_mbss_info_change_notify(struct ieee80211_sub_if_data *sdata,
|
|
u32 changed)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
unsigned long bits = changed;
|
|
u32 bit;
|
|
|
|
if (!bits)
|
|
return;
|
|
|
|
/* if we race with running work, worst case this work becomes a noop */
|
|
for_each_set_bit(bit, &bits, sizeof(changed) * BITS_PER_BYTE)
|
|
set_bit(bit, &ifmsh->mbss_changed);
|
|
set_bit(MESH_WORK_MBSS_CHANGED, &ifmsh->wrkq_flags);
|
|
ieee80211_queue_work(&sdata->local->hw, &sdata->work);
|
|
}
|
|
|
|
int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
struct ieee80211_local *local = sdata->local;
|
|
u32 changed = BSS_CHANGED_BEACON |
|
|
BSS_CHANGED_BEACON_ENABLED |
|
|
BSS_CHANGED_HT |
|
|
BSS_CHANGED_BASIC_RATES |
|
|
BSS_CHANGED_BEACON_INT;
|
|
|
|
local->fif_other_bss++;
|
|
/* mesh ifaces must set allmulti to forward mcast traffic */
|
|
atomic_inc(&local->iff_allmultis);
|
|
ieee80211_configure_filter(local);
|
|
|
|
ifmsh->mesh_cc_id = 0; /* Disabled */
|
|
/* register sync ops from extensible synchronization framework */
|
|
ifmsh->sync_ops = ieee80211_mesh_sync_ops_get(ifmsh->mesh_sp_id);
|
|
ifmsh->adjusting_tbtt = false;
|
|
ifmsh->sync_offset_clockdrift_max = 0;
|
|
set_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags);
|
|
ieee80211_mesh_root_setup(ifmsh);
|
|
ieee80211_queue_work(&local->hw, &sdata->work);
|
|
sdata->vif.bss_conf.ht_operation_mode =
|
|
ifmsh->mshcfg.ht_opmode;
|
|
sdata->vif.bss_conf.enable_beacon = true;
|
|
|
|
changed |= ieee80211_mps_local_status_update(sdata);
|
|
|
|
if (ieee80211_mesh_build_beacon(ifmsh)) {
|
|
ieee80211_stop_mesh(sdata);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ieee80211_bss_info_change_notify(sdata, changed);
|
|
|
|
netif_carrier_on(sdata->dev);
|
|
return 0;
|
|
}
|
|
|
|
void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
struct beacon_data *bcn;
|
|
|
|
netif_carrier_off(sdata->dev);
|
|
|
|
/* stop the beacon */
|
|
ifmsh->mesh_id_len = 0;
|
|
sdata->vif.bss_conf.enable_beacon = false;
|
|
clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
|
|
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
|
|
bcn = rcu_dereference_protected(ifmsh->beacon,
|
|
lockdep_is_held(&sdata->wdev.mtx));
|
|
rcu_assign_pointer(ifmsh->beacon, NULL);
|
|
kfree_rcu(bcn, rcu_head);
|
|
|
|
/* flush STAs and mpaths on this iface */
|
|
sta_info_flush(sdata);
|
|
mesh_path_flush_by_iface(sdata);
|
|
|
|
/* free all potentially still buffered group-addressed frames */
|
|
local->total_ps_buffered -= skb_queue_len(&ifmsh->ps.bc_buf);
|
|
skb_queue_purge(&ifmsh->ps.bc_buf);
|
|
|
|
del_timer_sync(&sdata->u.mesh.housekeeping_timer);
|
|
del_timer_sync(&sdata->u.mesh.mesh_path_root_timer);
|
|
del_timer_sync(&sdata->u.mesh.mesh_path_timer);
|
|
|
|
/* clear any mesh work (for next join) we may have accrued */
|
|
ifmsh->wrkq_flags = 0;
|
|
ifmsh->mbss_changed = 0;
|
|
|
|
local->fif_other_bss--;
|
|
atomic_dec(&local->iff_allmultis);
|
|
ieee80211_configure_filter(local);
|
|
}
|
|
|
|
static void
|
|
ieee80211_mesh_rx_probe_req(struct ieee80211_sub_if_data *sdata,
|
|
struct ieee80211_mgmt *mgmt, size_t len)
|
|
{
|
|
struct ieee80211_local *local = sdata->local;
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
struct sk_buff *presp;
|
|
struct beacon_data *bcn;
|
|
struct ieee80211_mgmt *hdr;
|
|
struct ieee802_11_elems elems;
|
|
size_t baselen;
|
|
u8 *pos;
|
|
|
|
pos = mgmt->u.probe_req.variable;
|
|
baselen = (u8 *) pos - (u8 *) mgmt;
|
|
if (baselen > len)
|
|
return;
|
|
|
|
ieee802_11_parse_elems(pos, len - baselen, false, &elems);
|
|
|
|
if (!elems.mesh_id)
|
|
return;
|
|
|
|
/* 802.11-2012 10.1.4.3.2 */
|
|
if ((!ether_addr_equal(mgmt->da, sdata->vif.addr) &&
|
|
!is_broadcast_ether_addr(mgmt->da)) ||
|
|
elems.ssid_len != 0)
|
|
return;
|
|
|
|
if (elems.mesh_id_len != 0 &&
|
|
(elems.mesh_id_len != ifmsh->mesh_id_len ||
|
|
memcmp(elems.mesh_id, ifmsh->mesh_id, ifmsh->mesh_id_len)))
|
|
return;
|
|
|
|
rcu_read_lock();
|
|
bcn = rcu_dereference(ifmsh->beacon);
|
|
|
|
if (!bcn)
|
|
goto out;
|
|
|
|
presp = dev_alloc_skb(local->tx_headroom +
|
|
bcn->head_len + bcn->tail_len);
|
|
if (!presp)
|
|
goto out;
|
|
|
|
skb_reserve(presp, local->tx_headroom);
|
|
memcpy(skb_put(presp, bcn->head_len), bcn->head, bcn->head_len);
|
|
memcpy(skb_put(presp, bcn->tail_len), bcn->tail, bcn->tail_len);
|
|
hdr = (struct ieee80211_mgmt *) presp->data;
|
|
hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
|
|
IEEE80211_STYPE_PROBE_RESP);
|
|
memcpy(hdr->da, mgmt->sa, ETH_ALEN);
|
|
IEEE80211_SKB_CB(presp)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
|
|
ieee80211_tx_skb(sdata, presp);
|
|
out:
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
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 ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
struct ieee802_11_elems elems;
|
|
struct ieee80211_channel *channel;
|
|
size_t baselen;
|
|
int freq;
|
|
enum ieee80211_band band = rx_status->band;
|
|
|
|
/* ignore ProbeResp to foreign address */
|
|
if (stype == IEEE80211_STYPE_PROBE_RESP &&
|
|
!ether_addr_equal(mgmt->da, sdata->vif.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,
|
|
false, &elems);
|
|
|
|
/* ignore non-mesh or secure / unsecure mismatch */
|
|
if ((!elems.mesh_id || !elems.mesh_config) ||
|
|
(elems.rsn && sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) ||
|
|
(!elems.rsn && sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE))
|
|
return;
|
|
|
|
if (elems.ds_params)
|
|
freq = ieee80211_channel_to_frequency(elems.ds_params[0], band);
|
|
else
|
|
freq = rx_status->freq;
|
|
|
|
channel = ieee80211_get_channel(local->hw.wiphy, freq);
|
|
|
|
if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
|
|
return;
|
|
|
|
if (mesh_matches_local(sdata, &elems))
|
|
mesh_neighbour_update(sdata, mgmt->sa, &elems);
|
|
|
|
if (ifmsh->sync_ops)
|
|
ifmsh->sync_ops->rx_bcn_presp(sdata,
|
|
stype, mgmt, &elems, rx_status);
|
|
}
|
|
|
|
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 WLAN_CATEGORY_SELF_PROTECTED:
|
|
switch (mgmt->u.action.u.self_prot.action_code) {
|
|
case WLAN_SP_MESH_PEERING_OPEN:
|
|
case WLAN_SP_MESH_PEERING_CLOSE:
|
|
case WLAN_SP_MESH_PEERING_CONFIRM:
|
|
mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
|
|
break;
|
|
}
|
|
break;
|
|
case WLAN_CATEGORY_MESH_ACTION:
|
|
if (mesh_action_is_path_sel(mgmt))
|
|
mesh_rx_path_sel_frame(sdata, mgmt, len);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ieee80211_mesh_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ieee80211_rx_status *rx_status;
|
|
struct ieee80211_mgmt *mgmt;
|
|
u16 stype;
|
|
|
|
sdata_lock(sdata);
|
|
|
|
/* mesh already went down */
|
|
if (!sdata->wdev.mesh_id_len)
|
|
goto out;
|
|
|
|
rx_status = IEEE80211_SKB_RXCB(skb);
|
|
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_PROBE_REQ:
|
|
ieee80211_mesh_rx_probe_req(sdata, mgmt, skb->len);
|
|
break;
|
|
case IEEE80211_STYPE_ACTION:
|
|
ieee80211_mesh_rx_mgmt_action(sdata, mgmt, skb->len, rx_status);
|
|
break;
|
|
}
|
|
out:
|
|
sdata_unlock(sdata);
|
|
}
|
|
|
|
static void mesh_bss_info_changed(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
u32 bit, changed = 0;
|
|
|
|
for_each_set_bit(bit, &ifmsh->mbss_changed,
|
|
sizeof(changed) * BITS_PER_BYTE) {
|
|
clear_bit(bit, &ifmsh->mbss_changed);
|
|
changed |= BIT(bit);
|
|
}
|
|
|
|
if (sdata->vif.bss_conf.enable_beacon &&
|
|
(changed & (BSS_CHANGED_BEACON |
|
|
BSS_CHANGED_HT |
|
|
BSS_CHANGED_BASIC_RATES |
|
|
BSS_CHANGED_BEACON_INT)))
|
|
if (ieee80211_mesh_rebuild_beacon(sdata))
|
|
return;
|
|
|
|
ieee80211_bss_info_change_notify(sdata, changed);
|
|
}
|
|
|
|
void ieee80211_mesh_work(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
|
|
sdata_lock(sdata);
|
|
|
|
/* mesh already went down */
|
|
if (!sdata->wdev.mesh_id_len)
|
|
goto out;
|
|
|
|
if (ifmsh->preq_queue_len &&
|
|
time_after(jiffies,
|
|
ifmsh->last_preq + msecs_to_jiffies(ifmsh->mshcfg.dot11MeshHWMPpreqMinInterval)))
|
|
mesh_path_start_discovery(sdata);
|
|
|
|
if (test_and_clear_bit(MESH_WORK_GROW_MPATH_TABLE, &ifmsh->wrkq_flags))
|
|
mesh_mpath_table_grow();
|
|
|
|
if (test_and_clear_bit(MESH_WORK_GROW_MPP_TABLE, &ifmsh->wrkq_flags))
|
|
mesh_mpp_table_grow();
|
|
|
|
if (test_and_clear_bit(MESH_WORK_HOUSEKEEPING, &ifmsh->wrkq_flags))
|
|
ieee80211_mesh_housekeeping(sdata);
|
|
|
|
if (test_and_clear_bit(MESH_WORK_ROOT, &ifmsh->wrkq_flags))
|
|
ieee80211_mesh_rootpath(sdata);
|
|
|
|
if (test_and_clear_bit(MESH_WORK_DRIFT_ADJUST, &ifmsh->wrkq_flags))
|
|
mesh_sync_adjust_tbtt(sdata);
|
|
|
|
if (test_and_clear_bit(MESH_WORK_MBSS_CHANGED, &ifmsh->wrkq_flags))
|
|
mesh_bss_info_changed(sdata);
|
|
out:
|
|
sdata_unlock(sdata);
|
|
}
|
|
|
|
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) &&
|
|
ieee80211_sdata_running(sdata))
|
|
ieee80211_queue_work(&local->hw, &sdata->work);
|
|
rcu_read_unlock();
|
|
}
|
|
|
|
void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata)
|
|
{
|
|
struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
|
|
static u8 zero_addr[ETH_ALEN] = {};
|
|
|
|
setup_timer(&ifmsh->housekeeping_timer,
|
|
ieee80211_mesh_housekeeping_timer,
|
|
(unsigned long) sdata);
|
|
|
|
ifmsh->accepting_plinks = true;
|
|
ifmsh->preq_id = 0;
|
|
ifmsh->sn = 0;
|
|
ifmsh->num_gates = 0;
|
|
atomic_set(&ifmsh->mpaths, 0);
|
|
mesh_rmc_init(sdata);
|
|
ifmsh->last_preq = jiffies;
|
|
ifmsh->next_perr = jiffies;
|
|
/* Allocate all mesh structures when creating the first mesh interface. */
|
|
if (!mesh_allocated)
|
|
ieee80211s_init();
|
|
setup_timer(&ifmsh->mesh_path_timer,
|
|
ieee80211_mesh_path_timer,
|
|
(unsigned long) sdata);
|
|
setup_timer(&ifmsh->mesh_path_root_timer,
|
|
ieee80211_mesh_path_root_timer,
|
|
(unsigned long) sdata);
|
|
INIT_LIST_HEAD(&ifmsh->preq_queue.list);
|
|
skb_queue_head_init(&ifmsh->ps.bc_buf);
|
|
spin_lock_init(&ifmsh->mesh_preq_queue_lock);
|
|
spin_lock_init(&ifmsh->sync_offset_lock);
|
|
RCU_INIT_POINTER(ifmsh->beacon, NULL);
|
|
|
|
sdata->vif.bss_conf.bssid = zero_addr;
|
|
}
|