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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6

Browse source 
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1674 commits)
  qlcnic: adding co maintainer
  ixgbe: add support for active DA cables
  ixgbe: dcb, do not tag tc_prio_control frames
  ixgbe: fix ixgbe_tx_is_paused logic
  ixgbe: always enable vlan strip/insert when DCB is enabled
  ixgbe: remove some redundant code in setting FCoE FIP filter
  ixgbe: fix wrong offset to fc_frame_header in ixgbe_fcoe_ddp
  ixgbe: fix header len when unsplit packet overflows to data buffer
  ipv6: Never schedule DAD timer on dead address
  ipv6: Use POSTDAD state
  ipv6: Use state_lock to protect ifa state
  ipv6: Replace inet6_ifaddr->dead with state
  cxgb4: notify upper drivers if the device is already up when they load
  cxgb4: keep interrupts available when the ports are brought down
  cxgb4: fix initial addition of MAC address
  cnic: Return SPQ credit to bnx2x after ring setup and shutdown.
  cnic: Convert cnic_local_flags to atomic ops.
  can: Fix SJA1000 command register writes on SMP systems
  bridge: fix build for CONFIG_SYSFS disabled
  ARCNET: Limit com20020 PCI ID matches for SOHARD cards
  ...

Fix up various conflicts with pcmcia tree drivers/net/
{pcmcia/3c589_cs.c, wireless/orinoco/orinoco_cs.c and
wireless/orinoco/spectrum_cs.c} and feature removal
(Documentation/feature-removal-schedule.txt).

Also fix a non-content conflict due to pm_qos_requirement getting
renamed in the PM tree (now pm_qos_request) in net/mac80211/scan.c
This commit is contained in:
Linus Torvalds 2010-05-20 21:04:44 -07:00
commit f8965467f3
1455 changed files with 95973 additions and 48342 deletions
Download patch file Download diff file Expand all files Collapse all files

17
net/mac80211/Kconfig
View file

@ -15,8 +15,12 @@ comment "CFG80211 needs to be enabled for MAC80211"
if MAC80211 != n
config MAC80211_HAS_RC
def_bool n
config MAC80211_RC_PID
bool "PID controller based rate control algorithm" if EMBEDDED
select MAC80211_HAS_RC
---help---
This option enables a TX rate control algorithm for
mac80211 that uses a PID controller to select the TX
@ -24,12 +28,14 @@ config MAC80211_RC_PID
config MAC80211_RC_MINSTREL
bool "Minstrel" if EMBEDDED
select MAC80211_HAS_RC
default y
---help---
This option enables the 'minstrel' TX rate control algorithm
choice
prompt "Default rate control algorithm"
depends on MAC80211_HAS_RC
default MAC80211_RC_DEFAULT_MINSTREL
---help---
This option selects the default rate control algorithm
@ -62,6 +68,9 @@ config MAC80211_RC_DEFAULT
endif
comment "Some wireless drivers require a rate control algorithm"
depends on MAC80211_HAS_RC=n
config MAC80211_MESH
bool "Enable mac80211 mesh networking (pre-802.11s) support"
depends on MAC80211 && EXPERIMENTAL
@ -212,8 +221,8 @@ config MAC80211_DRIVER_API_TRACER
depends on EVENT_TRACING
help
Say Y here to make mac80211 register with the ftrace
framework for the driver API -- you can see which
driver methods it is calling then by looking at the
trace.
framework for the driver API -- you can then see which
driver methods it is calling and which API functions
drivers are calling by looking at the trace.
If unsure, say N.
If unsure, say Y.

3
net/mac80211/Makefile
View file

@ -23,7 +23,8 @@ mac80211-y := \
key.o \
util.o \
wme.o \
event.o
event.o \
chan.o
mac80211-$(CONFIG_MAC80211_LEDS) += led.o
mac80211-$(CONFIG_MAC80211_DEBUGFS) += \

80
net/mac80211/agg-rx.c
View file

@ -19,23 +19,25 @@
#include "ieee80211_i.h"
#include "driver-ops.h"
void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
u16 initiator, u16 reason)
static void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
u16 initiator, u16 reason,
bool from_timer)
{
struct ieee80211_local *local = sta->local;
struct tid_ampdu_rx *tid_rx;
int i;
/* check if TID is in operational state */
spin_lock_bh(&sta->lock);
if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL) {
/* check if TID is in operational state */
if (!sta->ampdu_mlme.tid_active_rx[tid]) {
spin_unlock_bh(&sta->lock);
return;
}
sta->ampdu_mlme.tid_state_rx[tid] =
HT_AGG_STATE_REQ_STOP_BA_MSK |
(initiator << HT_AGG_STATE_INITIATOR_SHIFT);
spin_unlock_bh(&sta->lock);
sta->ampdu_mlme.tid_active_rx[tid] = false;
tid_rx = sta->ampdu_mlme.tid_rx[tid];
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Rx BA session stop requested for %pM tid %u\n",
@ -47,61 +49,42 @@ void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
printk(KERN_DEBUG "HW problem - can not stop rx "
"aggregation for tid %d\n", tid);
/* shutdown timer has not expired */
if (initiator != WLAN_BACK_TIMER)
del_timer_sync(&sta->ampdu_mlme.tid_rx[tid]->session_timer);
/* check if this is a self generated aggregation halt */
if (initiator == WLAN_BACK_RECIPIENT || initiator == WLAN_BACK_TIMER)
if (initiator == WLAN_BACK_RECIPIENT)
ieee80211_send_delba(sta->sdata, sta->sta.addr,
tid, 0, reason);
/* free the reordering buffer */
for (i = 0; i < sta->ampdu_mlme.tid_rx[tid]->buf_size; i++) {
if (sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]) {
for (i = 0; i < tid_rx->buf_size; i++) {
if (tid_rx->reorder_buf[i]) {
/* release the reordered frames */
dev_kfree_skb(sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i]);
sta->ampdu_mlme.tid_rx[tid]->stored_mpdu_num--;
sta->ampdu_mlme.tid_rx[tid]->reorder_buf[i] = NULL;
dev_kfree_skb(tid_rx->reorder_buf[i]);
tid_rx->stored_mpdu_num--;
tid_rx->reorder_buf[i] = NULL;
}
}
spin_lock_bh(&sta->lock);
/* free resources */
kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_buf);
kfree(sta->ampdu_mlme.tid_rx[tid]->reorder_time);
kfree(tid_rx->reorder_buf);
kfree(tid_rx->reorder_time);
sta->ampdu_mlme.tid_rx[tid] = NULL;
if (!sta->ampdu_mlme.tid_rx[tid]->shutdown) {
kfree(sta->ampdu_mlme.tid_rx[tid]);
sta->ampdu_mlme.tid_rx[tid] = NULL;
}
sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_IDLE;
spin_unlock_bh(&sta->lock);
if (!from_timer)
del_timer_sync(&tid_rx->session_timer);
kfree(tid_rx);
}
void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *ra, u16 tid,
u16 initiator, u16 reason)
void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
u16 initiator, u16 reason)
{
struct sta_info *sta;
rcu_read_lock();
sta = sta_info_get(sdata, ra);
if (!sta) {
rcu_read_unlock();
return;
}
__ieee80211_stop_rx_ba_session(sta, tid, initiator, reason);
rcu_read_unlock();
___ieee80211_stop_rx_ba_session(sta, tid, initiator, reason, false);
}
/*
* After accepting the AddBA Request we activated a timer,
* resetting it after each frame that arrives from the originator.
* if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
*/
static void sta_rx_agg_session_timer_expired(unsigned long data)
{
@ -117,9 +100,8 @@ static void sta_rx_agg_session_timer_expired(unsigned long data)
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "rx session timer expired on tid %d\n", (u16)*ptid);
#endif
ieee80211_sta_stop_rx_ba_session(sta->sdata, sta->sta.addr,
(u16)*ptid, WLAN_BACK_TIMER,
WLAN_REASON_QSTA_TIMEOUT);
___ieee80211_stop_rx_ba_session(sta, *ptid, WLAN_BACK_RECIPIENT,
WLAN_REASON_QSTA_TIMEOUT, true);
}
static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *da, u16 tid,
@ -194,7 +176,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
status = WLAN_STATUS_REQUEST_DECLINED;
if (test_sta_flags(sta, WLAN_STA_SUSPEND)) {
if (test_sta_flags(sta, WLAN_STA_BLOCK_BA)) {
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Suspend in progress. "
"Denying ADDBA request\n");
@ -232,7 +214,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
/* examine state machine */
spin_lock_bh(&sta->lock);
if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_IDLE) {
if (sta->ampdu_mlme.tid_active_rx[tid]) {
#ifdef CONFIG_MAC80211_HT_DEBUG
if (net_ratelimit())
printk(KERN_DEBUG "unexpected AddBA Req from "
@ -294,7 +276,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
}
/* change state and send addba resp */
sta->ampdu_mlme.tid_state_rx[tid] = HT_AGG_STATE_OPERATIONAL;
sta->ampdu_mlme.tid_active_rx[tid] = true;
tid_agg_rx->dialog_token = dialog_token;
tid_agg_rx->ssn = start_seq_num;
tid_agg_rx->head_seq_num = start_seq_num;

16
net/mac80211/agg-tx.c
View file

@ -186,7 +186,7 @@ static void sta_addba_resp_timer_expired(unsigned long data)
spin_unlock_bh(&sta->lock);
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "timer expired on tid %d but we are not "
"(or no longer) expecting addBA response there",
"(or no longer) expecting addBA response there\n",
tid);
#endif
return;
@ -214,6 +214,8 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid)
int ret = 0;
u16 start_seq_num;
trace_api_start_tx_ba_session(pubsta, tid);
if (WARN_ON(!local->ops->ampdu_action))
return -EINVAL;
@ -245,7 +247,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid)
return -EINVAL;
}
if (test_sta_flags(sta, WLAN_STA_SUSPEND)) {
if (test_sta_flags(sta, WLAN_STA_BLOCK_BA)) {
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Suspend in progress. "
"Denying BA session request\n");
@ -414,7 +416,7 @@ static void ieee80211_agg_tx_operational(struct ieee80211_local *local,
struct sta_info *sta, u16 tid)
{
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid);
printk(KERN_DEBUG "Aggregation is on for tid %d\n", tid);
#endif
spin_lock(&local->ampdu_lock);
@ -440,6 +442,8 @@ void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid)
struct sta_info *sta;
u8 *state;
trace_api_start_tx_ba_cb(sdata, ra, tid);
if (tid >= STA_TID_NUM) {
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
@ -541,6 +545,8 @@ int ieee80211_stop_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct ieee80211_local *local = sdata->local;
trace_api_stop_tx_ba_session(pubsta, tid, initiator);
if (!local->ops->ampdu_action)
return -EINVAL;
@ -558,6 +564,8 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid)
struct sta_info *sta;
u8 *state;
trace_api_stop_tx_ba_cb(sdata, ra, tid);
if (tid >= STA_TID_NUM) {
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
@ -674,7 +682,7 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local,
del_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "switched off addBA timer for tid %d \n", tid);
printk(KERN_DEBUG "switched off addBA timer for tid %d\n", tid);
#endif /* CONFIG_MAC80211_HT_DEBUG */
if (le16_to_cpu(mgmt->u.action.u.addba_resp.status)

122
net/mac80211/cfg.c
View file

@ -97,9 +97,6 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
params->mesh_id_len,
params->mesh_id);
if (sdata->vif.type != NL80211_IFTYPE_MONITOR || !flags)
return 0;
if (type == NL80211_IFTYPE_AP_VLAN &&
params && params->use_4addr == 0)
rcu_assign_pointer(sdata->u.vlan.sta, NULL);
@ -107,7 +104,9 @@ static int ieee80211_change_iface(struct wiphy *wiphy,
params && params->use_4addr >= 0)
sdata->u.mgd.use_4addr = params->use_4addr;
sdata->u.mntr_flags = *flags;
if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags)
sdata->u.mntr_flags = *flags;
return 0;
}
@ -411,6 +410,17 @@ static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
return ret;
}
static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
int idx, struct survey_info *survey)
{
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
if (!local->ops->get_survey)
return -EOPNOTSUPP;
return drv_get_survey(local, idx, survey);
}
static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
u8 *mac, struct station_info *sinfo)
{
@ -1104,6 +1114,13 @@ static int ieee80211_change_bss(struct wiphy *wiphy,
changed |= BSS_CHANGED_BASIC_RATES;
}
if (params->ap_isolate >= 0) {
if (params->ap_isolate)
sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
else
sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
}
ieee80211_bss_info_change_notify(sdata, changed);
return 0;
@ -1137,19 +1154,47 @@ static int ieee80211_set_txq_params(struct wiphy *wiphy,
return -EINVAL;
}
/* enable WMM or activate new settings */
local->hw.conf.flags |= IEEE80211_CONF_QOS;
drv_config(local, IEEE80211_CONF_CHANGE_QOS);
return 0;
}
static int ieee80211_set_channel(struct wiphy *wiphy,
struct net_device *netdev,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata = NULL;
if (netdev)
sdata = IEEE80211_DEV_TO_SUB_IF(netdev);
switch (ieee80211_get_channel_mode(local, NULL)) {
case CHAN_MODE_HOPPING:
return -EBUSY;
case CHAN_MODE_FIXED:
if (local->oper_channel != chan)
return -EBUSY;
if (!sdata && local->_oper_channel_type == channel_type)
return 0;
break;
case CHAN_MODE_UNDEFINED:
break;
}
local->oper_channel = chan;
local->oper_channel_type = channel_type;
return ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
if (!ieee80211_set_channel_type(local, sdata, channel_type))
return -EBUSY;
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
if (sdata && sdata->vif.type != NL80211_IFTYPE_MONITOR)
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
return 0;
}
#ifdef CONFIG_PM
@ -1193,6 +1238,20 @@ static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_assoc_request *req)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
switch (ieee80211_get_channel_mode(local, sdata)) {
case CHAN_MODE_HOPPING:
return -EBUSY;
case CHAN_MODE_FIXED:
if (local->oper_channel == req->bss->channel)
break;
return -EBUSY;
case CHAN_MODE_UNDEFINED:
break;
}
return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
}
@ -1215,8 +1274,22 @@ static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
struct cfg80211_ibss_params *params)
{
struct ieee80211_local *local = wiphy_priv(wiphy);
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
switch (ieee80211_get_channel_mode(local, sdata)) {
case CHAN_MODE_HOPPING:
return -EBUSY;
case CHAN_MODE_FIXED:
if (!params->channel_fixed)
return -EBUSY;
if (local->oper_channel == params->channel)
break;
return -EBUSY;
case CHAN_MODE_UNDEFINED:
break;
}
return ieee80211_ibss_join(sdata, params);
}
@ -1345,7 +1418,7 @@ int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata,
* association, there's no need to send an action frame.
*/
if (!sdata->u.mgd.associated ||
sdata->local->oper_channel_type == NL80211_CHAN_NO_HT) {
sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) {
mutex_lock(&sdata->local->iflist_mtx);
ieee80211_recalc_smps(sdata->local, sdata);
mutex_unlock(&sdata->local->iflist_mtx);
@ -1384,11 +1457,11 @@ static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
return -EOPNOTSUPP;
if (enabled == sdata->u.mgd.powersave &&
timeout == conf->dynamic_ps_timeout)
timeout == conf->dynamic_ps_forced_timeout)
return 0;
sdata->u.mgd.powersave = enabled;
conf->dynamic_ps_timeout = timeout;
conf->dynamic_ps_forced_timeout = timeout;
/* no change, but if automatic follow powersave */
mutex_lock(&sdata->u.mgd.mtx);
@ -1403,6 +1476,35 @@ static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
return 0;
}
static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
struct net_device *dev,
s32 rssi_thold, u32 rssi_hyst)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
struct ieee80211_vif *vif = &sdata->vif;
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
if (rssi_thold == bss_conf->cqm_rssi_thold &&
rssi_hyst == bss_conf->cqm_rssi_hyst)
return 0;
bss_conf->cqm_rssi_thold = rssi_thold;
bss_conf->cqm_rssi_hyst = rssi_hyst;
if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
if (sdata->vif.type != NL80211_IFTYPE_STATION)
return -EOPNOTSUPP;
return 0;
}
/* tell the driver upon association, unless already associated */
if (sdata->u.mgd.associated)
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
return 0;
}
static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
struct net_device *dev,
const u8 *addr,
@ -1475,6 +1577,7 @@ struct cfg80211_ops mac80211_config_ops = {
.change_station = ieee80211_change_station,
.get_station = ieee80211_get_station,
.dump_station = ieee80211_dump_station,
.dump_survey = ieee80211_dump_survey,
#ifdef CONFIG_MAC80211_MESH
.add_mpath = ieee80211_add_mpath,
.del_mpath = ieee80211_del_mpath,
@ -1507,4 +1610,5 @@ struct cfg80211_ops mac80211_config_ops = {
.remain_on_channel = ieee80211_remain_on_channel,
.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
.action = ieee80211_action,
.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
};

127
net/mac80211/chan.c Normal file
View file

@ -0,0 +1,127 @@
/*
* mac80211 - channel management
*/
#include <linux/nl80211.h>
#include "ieee80211_i.h"
enum ieee80211_chan_mode
__ieee80211_get_channel_mode(struct ieee80211_local *local,
struct ieee80211_sub_if_data *ignore)
{
struct ieee80211_sub_if_data *sdata;
WARN_ON(!mutex_is_locked(&local->iflist_mtx));
list_for_each_entry(sdata, &local->interfaces, list) {
if (sdata == ignore)
continue;
if (!ieee80211_sdata_running(sdata))
continue;
if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
continue;
if (sdata->vif.type == NL80211_IFTYPE_STATION &&
!sdata->u.mgd.associated)
continue;
if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
if (!sdata->u.ibss.ssid_len)
continue;
if (!sdata->u.ibss.fixed_channel)
return CHAN_MODE_HOPPING;
}
if (sdata->vif.type == NL80211_IFTYPE_AP &&
!sdata->u.ap.beacon)
continue;
return CHAN_MODE_FIXED;
}
return CHAN_MODE_UNDEFINED;
}
enum ieee80211_chan_mode
ieee80211_get_channel_mode(struct ieee80211_local *local,
struct ieee80211_sub_if_data *ignore)
{
enum ieee80211_chan_mode mode;
mutex_lock(&local->iflist_mtx);
mode = __ieee80211_get_channel_mode(local, ignore);
mutex_unlock(&local->iflist_mtx);
return mode;
}
bool ieee80211_set_channel_type(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
enum nl80211_channel_type chantype)
{
struct ieee80211_sub_if_data *tmp;
enum nl80211_channel_type superchan = NL80211_CHAN_NO_HT;
bool result;
mutex_lock(&local->iflist_mtx);
list_for_each_entry(tmp, &local->interfaces, list) {
if (tmp == sdata)
continue;
if (!ieee80211_sdata_running(tmp))
continue;
switch (tmp->vif.bss_conf.channel_type) {
case NL80211_CHAN_NO_HT:
case NL80211_CHAN_HT20:
superchan = tmp->vif.bss_conf.channel_type;
break;
case NL80211_CHAN_HT40PLUS:
WARN_ON(superchan == NL80211_CHAN_HT40MINUS);
superchan = NL80211_CHAN_HT40PLUS;
break;
case NL80211_CHAN_HT40MINUS:
WARN_ON(superchan == NL80211_CHAN_HT40PLUS);
superchan = NL80211_CHAN_HT40MINUS;
break;
}
}
switch (superchan) {
case NL80211_CHAN_NO_HT:
case NL80211_CHAN_HT20:
/*
* allow any change that doesn't go to no-HT
* (if it already is no-HT no change is needed)
*/
if (chantype == NL80211_CHAN_NO_HT)
break;
superchan = chantype;
break;
case NL80211_CHAN_HT40PLUS:
case NL80211_CHAN_HT40MINUS:
/* allow smaller bandwidth and same */
if (chantype == NL80211_CHAN_NO_HT)
break;
if (chantype == NL80211_CHAN_HT20)
break;
if (superchan == chantype)
break;
result = false;
goto out;
}
local->_oper_channel_type = superchan;
if (sdata)
sdata->vif.bss_conf.channel_type = chantype;
result = true;
out:
mutex_unlock(&local->iflist_mtx);
return result;
}

1
net/mac80211/debugfs.h
View file

@ -7,7 +7,6 @@ extern int mac80211_open_file_generic(struct inode *inode, struct file *file);
#else
static inline void debugfs_hw_add(struct ieee80211_local *local)
{
return;
}
#endif

12
net/mac80211/debugfs_netdev.c
View file

@ -100,6 +100,14 @@ static ssize_t ieee80211_if_fmt_##name( \
return scnprintf(buf, buflen, "%pM\n", sdata->field); \
}
#define IEEE80211_IF_FMT_DEC_DIV_16(name, field) \
static ssize_t ieee80211_if_fmt_##name( \
const struct ieee80211_sub_if_data *sdata, \
char *buf, int buflen) \
{ \
return scnprintf(buf, buflen, "%d\n", sdata->field / 16); \
}
#define __IEEE80211_IF_FILE(name, _write) \
static ssize_t ieee80211_if_read_##name(struct file *file, \
char __user *userbuf, \
@ -140,6 +148,8 @@ IEEE80211_IF_FILE(rc_rateidx_mask_5ghz, rc_rateidx_mask[IEEE80211_BAND_5GHZ],
/* STA attributes */
IEEE80211_IF_FILE(bssid, u.mgd.bssid, MAC);
IEEE80211_IF_FILE(aid, u.mgd.aid, DEC);
IEEE80211_IF_FILE(last_beacon, u.mgd.last_beacon_signal, DEC);
IEEE80211_IF_FILE(ave_beacon, u.mgd.ave_beacon_signal, DEC_DIV_16);
static int ieee80211_set_smps(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps_mode)
@ -276,6 +286,8 @@ static void add_sta_files(struct ieee80211_sub_if_data *sdata)
DEBUGFS_ADD(bssid);
DEBUGFS_ADD(aid);
DEBUGFS_ADD(last_beacon);
DEBUGFS_ADD(ave_beacon);
DEBUGFS_ADD_MODE(smps, 0600);
}

79
net/mac80211/debugfs_sta.c
View file

@ -39,6 +39,13 @@ static const struct file_operations sta_ ##name## _ops = { \
.open = mac80211_open_file_generic, \
}
#define STA_OPS_RW(name) \
static const struct file_operations sta_ ##name## _ops = { \
.read = sta_##name##_read, \
.write = sta_##name##_write, \
.open = mac80211_open_file_generic, \
}
#define STA_FILE(name, field, format) \
STA_READ_##format(name, field) \
STA_OPS(name)
@ -57,7 +64,6 @@ STA_FILE(tx_filtered, tx_filtered_count, LU);
STA_FILE(tx_retry_failed, tx_retry_failed, LU);
STA_FILE(tx_retry_count, tx_retry_count, LU);
STA_FILE(last_signal, last_signal, D);
STA_FILE(last_noise, last_noise, D);
STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);
static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
@ -120,7 +126,7 @@ STA_OPS(last_seq_ctrl);
static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
char buf[64 + STA_TID_NUM * 40], *p = buf;
char buf[71 + STA_TID_NUM * 40], *p = buf;
int i;
struct sta_info *sta = file->private_data;
@ -128,16 +134,16 @@ static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
sta->ampdu_mlme.dialog_token_allocator + 1);
p += scnprintf(p, sizeof(buf) + buf - p,
"TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tSSN\tpending\n");
"TID\t\tRX active\tDTKN\tSSN\t\tTX\tDTKN\tSSN\tpending\n");
for (i = 0; i < STA_TID_NUM; i++) {
p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
sta->ampdu_mlme.tid_state_rx[i]);
sta->ampdu_mlme.tid_active_rx[i]);
p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
sta->ampdu_mlme.tid_state_rx[i] ?
sta->ampdu_mlme.tid_active_rx[i] ?
sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
sta->ampdu_mlme.tid_state_rx[i] ?
sta->ampdu_mlme.tid_active_rx[i] ?
sta->ampdu_mlme.tid_rx[i]->ssn : 0);
p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
@ -157,7 +163,63 @@ static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
}
STA_OPS(agg_status);
static ssize_t sta_agg_status_write(struct file *file, const char __user *userbuf,
size_t count, loff_t *ppos)
{
char _buf[12], *buf = _buf;
struct sta_info *sta = file->private_data;
bool start, tx;
unsigned long tid;
int ret;
if (count > sizeof(_buf))
return -EINVAL;
if (copy_from_user(buf, userbuf, count))
return -EFAULT;
buf[sizeof(_buf) - 1] = '\0';
if (strncmp(buf, "tx ", 3) == 0) {
buf += 3;
tx = true;
} else if (strncmp(buf, "rx ", 3) == 0) {
buf += 3;
tx = false;
} else
return -EINVAL;
if (strncmp(buf, "start ", 6) == 0) {
buf += 6;
start = true;
if (!tx)
return -EINVAL;
} else if (strncmp(buf, "stop ", 5) == 0) {
buf += 5;
start = false;
} else
return -EINVAL;
tid = simple_strtoul(buf, NULL, 0);
if (tid >= STA_TID_NUM)
return -EINVAL;
if (tx) {
if (start)
ret = ieee80211_start_tx_ba_session(&sta->sta, tid);
else
ret = ieee80211_stop_tx_ba_session(&sta->sta, tid,
WLAN_BACK_RECIPIENT);
} else {
__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, 3);
ret = 0;
}
return ret ?: count;
}
STA_OPS_RW(agg_status);
static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
@ -177,7 +239,7 @@ static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
if (htc->ht_supported) {
p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDCP");
PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDPC");
PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
@ -289,7 +351,6 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
DEBUGFS_ADD(tx_retry_failed);
DEBUGFS_ADD(tx_retry_count);
DEBUGFS_ADD(last_signal);
DEBUGFS_ADD(last_noise);
DEBUGFS_ADD(wep_weak_iv_count);
DEBUGFS_ADD(ht_capa);
}

33
net/mac80211/driver-ops.h
View file

@ -84,16 +84,14 @@ static inline void drv_bss_info_changed(struct ieee80211_local *local,
}
static inline u64 drv_prepare_multicast(struct ieee80211_local *local,
int mc_count,
struct dev_addr_list *mc_list)
struct netdev_hw_addr_list *mc_list)
{
u64 ret = 0;
if (local->ops->prepare_multicast)
ret = local->ops->prepare_multicast(&local->hw, mc_count,
mc_list);
ret = local->ops->prepare_multicast(&local->hw, mc_list);
trace_drv_prepare_multicast(local, mc_count, ret);
trace_drv_prepare_multicast(local, mc_list->count, ret);
return ret;
}
@ -154,14 +152,15 @@ static inline void drv_update_tkip_key(struct ieee80211_local *local,
}
static inline int drv_hw_scan(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct cfg80211_scan_request *req)
{
int ret;
might_sleep();
ret = local->ops->hw_scan(&local->hw, req);
trace_drv_hw_scan(local, req, ret);
ret = local->ops->hw_scan(&local->hw, &sdata->vif, req);
trace_drv_hw_scan(local, sdata, req, ret);
return ret;
}
@ -346,6 +345,15 @@ static inline int drv_ampdu_action(struct ieee80211_local *local,
return ret;
}
static inline int drv_get_survey(struct ieee80211_local *local, int idx,
struct survey_info *survey)
{
int ret = -EOPNOTSUPP;
if (local->ops->conf_tx)
ret = local->ops->get_survey(&local->hw, idx, survey);
/* trace_drv_get_survey(local, idx, survey, ret); */
return ret;
}
static inline void drv_rfkill_poll(struct ieee80211_local *local)
{
@ -363,4 +371,15 @@ static inline void drv_flush(struct ieee80211_local *local, bool drop)
if (local->ops->flush)
local->ops->flush(&local->hw, drop);
}
static inline void drv_channel_switch(struct ieee80211_local *local,
struct ieee80211_channel_switch *ch_switch)
{
might_sleep();
local->ops->channel_switch(&local->hw, ch_switch);
trace_drv_channel_switch(local, ch_switch);
}
#endif /* __MAC80211_DRIVER_OPS */

333
net/mac80211/driver-trace.h
View file

@ -32,6 +32,10 @@ static inline void trace_ ## name(proto) {}
#define VIF_PR_FMT " vif:%s(%d)"
#define VIF_PR_ARG __get_str(vif_name), __entry->vif_type
/*
* Tracing for driver callbacks.
*/
TRACE_EVENT(drv_start,
TP_PROTO(struct ieee80211_local *local, int ret),
@ -359,23 +363,26 @@ TRACE_EVENT(drv_update_tkip_key,
TRACE_EVENT(drv_hw_scan,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct cfg80211_scan_request *req, int ret),
TP_ARGS(local, req, ret),
TP_ARGS(local, sdata, req, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
VIF_ENTRY
__field(int, ret)
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
__entry->ret = ret;
),
TP_printk(
LOCAL_PR_FMT " ret:%d",
LOCAL_PR_ARG, __entry->ret
LOCAL_PR_FMT VIF_PR_FMT " ret:%d",
LOCAL_PR_ARG,VIF_PR_ARG, __entry->ret
)
);
@ -766,6 +773,326 @@ TRACE_EVENT(drv_flush,
LOCAL_PR_ARG, __entry->drop
)
);
TRACE_EVENT(drv_channel_switch,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_channel_switch *ch_switch),
TP_ARGS(local, ch_switch),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(u64, timestamp)
__field(bool, block_tx)
__field(u16, freq)
__field(u8, count)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->timestamp = ch_switch->timestamp;
__entry->block_tx = ch_switch->block_tx;
__entry->freq = ch_switch->channel->center_freq;
__entry->count = ch_switch->count;
),
TP_printk(
LOCAL_PR_FMT " new freq:%u count:%d",
LOCAL_PR_ARG, __entry->freq, __entry->count
)
);
/*
* Tracing for API calls that drivers call.
*/
TRACE_EVENT(api_start_tx_ba_session,
TP_PROTO(struct ieee80211_sta *sta, u16 tid),
TP_ARGS(sta, tid),
TP_STRUCT__entry(
STA_ENTRY
__field(u16, tid)
),
TP_fast_assign(
STA_ASSIGN;
__entry->tid = tid;
),
TP_printk(
STA_PR_FMT " tid:%d",
STA_PR_ARG, __entry->tid
)
);
TRACE_EVENT(api_start_tx_ba_cb,
TP_PROTO(struct ieee80211_sub_if_data *sdata, const u8 *ra, u16 tid),
TP_ARGS(sdata, ra, tid),
TP_STRUCT__entry(
VIF_ENTRY
__array(u8, ra, ETH_ALEN)
__field(u16, tid)
),
TP_fast_assign(
VIF_ASSIGN;
memcpy(__entry->ra, ra, ETH_ALEN);
__entry->tid = tid;
),
TP_printk(
VIF_PR_FMT " ra:%pM tid:%d",
VIF_PR_ARG, __entry->ra, __entry->tid
)
);
TRACE_EVENT(api_stop_tx_ba_session,
TP_PROTO(struct ieee80211_sta *sta, u16 tid, u16 initiator),
TP_ARGS(sta, tid, initiator),
TP_STRUCT__entry(
STA_ENTRY
__field(u16, tid)
__field(u16, initiator)
),
TP_fast_assign(
STA_ASSIGN;
__entry->tid = tid;
__entry->initiator = initiator;
),
TP_printk(
STA_PR_FMT " tid:%d initiator:%d",
STA_PR_ARG, __entry->tid, __entry->initiator
)
);
TRACE_EVENT(api_stop_tx_ba_cb,
TP_PROTO(struct ieee80211_sub_if_data *sdata, const u8 *ra, u16 tid),
TP_ARGS(sdata, ra, tid),
TP_STRUCT__entry(
VIF_ENTRY
__array(u8, ra, ETH_ALEN)
__field(u16, tid)
),
TP_fast_assign(
VIF_ASSIGN;
memcpy(__entry->ra, ra, ETH_ALEN);
__entry->tid = tid;
),
TP_printk(
VIF_PR_FMT " ra:%pM tid:%d",
VIF_PR_ARG, __entry->ra, __entry->tid
)
);
TRACE_EVENT(api_restart_hw,
TP_PROTO(struct ieee80211_local *local),
TP_ARGS(local),
TP_STRUCT__entry(
LOCAL_ENTRY
),
TP_fast_assign(
LOCAL_ASSIGN;
),
TP_printk(
LOCAL_PR_FMT,
LOCAL_PR_ARG
)
);
TRACE_EVENT(api_beacon_loss,
TP_PROTO(struct ieee80211_sub_if_data *sdata),
TP_ARGS(sdata),
TP_STRUCT__entry(
VIF_ENTRY
),
TP_fast_assign(
VIF_ASSIGN;
),
TP_printk(
VIF_PR_FMT,
VIF_PR_ARG
)
);
TRACE_EVENT(api_connection_loss,
TP_PROTO(struct ieee80211_sub_if_data *sdata),
TP_ARGS(sdata),
TP_STRUCT__entry(
VIF_ENTRY
),
TP_fast_assign(
VIF_ASSIGN;
),
TP_printk(
VIF_PR_FMT,
VIF_PR_ARG
)
);
TRACE_EVENT(api_cqm_rssi_notify,
TP_PROTO(struct ieee80211_sub_if_data *sdata,
enum nl80211_cqm_rssi_threshold_event rssi_event),
TP_ARGS(sdata, rssi_event),
TP_STRUCT__entry(
VIF_ENTRY
__field(u32, rssi_event)
),
TP_fast_assign(
VIF_ASSIGN;
__entry->rssi_event = rssi_event;
),
TP_printk(
VIF_PR_FMT " event:%d",
VIF_PR_ARG, __entry->rssi_event
)
);
TRACE_EVENT(api_scan_completed,
TP_PROTO(struct ieee80211_local *local, bool aborted),
TP_ARGS(local, aborted),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(bool, aborted)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->aborted = aborted;
),
TP_printk(
LOCAL_PR_FMT " aborted:%d",
LOCAL_PR_ARG, __entry->aborted
)
);
TRACE_EVENT(api_sta_block_awake,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sta *sta, bool block),
TP_ARGS(local, sta, block),
TP_STRUCT__entry(
LOCAL_ENTRY
STA_ENTRY
__field(bool, block)
),
TP_fast_assign(
LOCAL_ASSIGN;
STA_ASSIGN;
__entry->block = block;
),
TP_printk(
LOCAL_PR_FMT STA_PR_FMT " block:%d",
LOCAL_PR_ARG, STA_PR_FMT, __entry->block
)
);
TRACE_EVENT(api_chswitch_done,
TP_PROTO(struct ieee80211_sub_if_data *sdata, bool success),
TP_ARGS(sdata, success),
TP_STRUCT__entry(
VIF_ENTRY
__field(bool, success)
),
TP_fast_assign(
VIF_ASSIGN;
__entry->success = success;
),
TP_printk(
VIF_PR_FMT " success=%d",
VIF_PR_ARG, __entry->success
)
);
/*
* Tracing for internal functions
* (which may also be called in response to driver calls)
*/
TRACE_EVENT(wake_queue,
TP_PROTO(struct ieee80211_local *local, u16 queue,
enum queue_stop_reason reason),
TP_ARGS(local, queue, reason),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(u16, queue)
__field(u32, reason)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->queue = queue;
__entry->reason = reason;
),
TP_printk(
LOCAL_PR_FMT " queue:%d, reason:%d",
LOCAL_PR_ARG, __entry->queue, __entry->reason
)
);
TRACE_EVENT(stop_queue,
TP_PROTO(struct ieee80211_local *local, u16 queue,
enum queue_stop_reason reason),
TP_ARGS(local, queue, reason),
TP_STRUCT__entry(
LOCAL_ENTRY
__field(u16, queue)
__field(u32, reason)
),
TP_fast_assign(
LOCAL_ASSIGN;
__entry->queue = queue;
__entry->reason = reason;
),
TP_printk(
LOCAL_PR_FMT " queue:%d, reason:%d",
LOCAL_PR_ARG, __entry->queue, __entry->reason
)
);
#endif /* !__MAC80211_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */
#undef TRACE_INCLUDE_PATH

3
net/mac80211/ht.c
View file

@ -175,8 +175,7 @@ void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
#endif /* CONFIG_MAC80211_HT_DEBUG */
if (initiator == WLAN_BACK_INITIATOR)
ieee80211_sta_stop_rx_ba_session(sdata, sta->sta.addr, tid,
WLAN_BACK_INITIATOR, 0);
__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_INITIATOR, 0);
else { /* WLAN_BACK_RECIPIENT */
spin_lock_bh(&sta->lock);
if (sta->ampdu_mlme.tid_state_tx[tid] & HT_ADDBA_REQUESTED_MSK)

46
net/mac80211/ibss.c
View file

@ -92,12 +92,18 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
if (memcmp(ifibss->bssid, bssid, ETH_ALEN))
sta_info_flush(sdata->local, sdata);
/* if merging, indicate to driver that we leave the old IBSS */
if (sdata->vif.bss_conf.ibss_joined) {
sdata->vif.bss_conf.ibss_joined = false;
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_IBSS);
}
memcpy(ifibss->bssid, bssid, ETH_ALEN);
sdata->drop_unencrypted = capability & WLAN_CAPABILITY_PRIVACY ? 1 : 0;
local->oper_channel = chan;
local->oper_channel_type = NL80211_CHAN_NO_HT;
WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT));
ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_CHANNEL);
sband = local->hw.wiphy->bands[chan->band];
@ -171,6 +177,8 @@ static void __ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
bss_change |= BSS_CHANGED_BSSID;
bss_change |= BSS_CHANGED_BEACON;
bss_change |= BSS_CHANGED_BEACON_ENABLED;
bss_change |= BSS_CHANGED_IBSS;
sdata->vif.bss_conf.ibss_joined = true;
ieee80211_bss_info_change_notify(sdata, bss_change);
ieee80211_sta_def_wmm_params(sdata, sband->n_bitrates, supp_rates);
@ -265,17 +273,16 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
sta->sta.supp_rates[band] = supp_rates |
ieee80211_mandatory_rates(local, band);
if (sta->sta.supp_rates[band] != prev_rates) {
#ifdef CONFIG_MAC80211_IBSS_DEBUG
if (sta->sta.supp_rates[band] != prev_rates)
printk(KERN_DEBUG "%s: updated supp_rates set "
"for %pM based on beacon info (0x%llx | "
"0x%llx -> 0x%llx)\n",
sdata->name,
sta->sta.addr,
(unsigned long long) prev_rates,
(unsigned long long) supp_rates,
(unsigned long long) sta->sta.supp_rates[band]);
"for %pM based on beacon/probe_response "
"(0x%x -> 0x%x)\n",
sdata->name, sta->sta.addr,
prev_rates, sta->sta.supp_rates[band]);
#endif
rate_control_rate_init(sta);
}
rcu_read_unlock();
} else {
rcu_read_unlock();
@ -371,6 +378,7 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
sdata->name, mgmt->bssid);
#endif
ieee80211_sta_join_ibss(sdata, bss);
supp_rates = ieee80211_sta_get_rates(local, elems, band);
ieee80211_ibss_add_sta(sdata, mgmt->bssid, mgmt->sa,
supp_rates, GFP_KERNEL);
}
@ -481,7 +489,9 @@ static void ieee80211_sta_merge_ibss(struct ieee80211_sub_if_data *sdata)
printk(KERN_DEBUG "%s: No active IBSS STAs - trying to scan for other "
"IBSS networks with same SSID (merge)\n", sdata->name);
ieee80211_request_internal_scan(sdata, ifibss->ssid, ifibss->ssid_len);
ieee80211_request_internal_scan(sdata,
ifibss->ssid, ifibss->ssid_len,
ifibss->fixed_channel ? ifibss->channel : NULL);
}
static void ieee80211_sta_create_ibss(struct ieee80211_sub_if_data *sdata)
@ -588,8 +598,9 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
printk(KERN_DEBUG "%s: Trigger new scan to find an IBSS to "
"join\n", sdata->name);
ieee80211_request_internal_scan(sdata, ifibss->ssid,
ifibss->ssid_len);
ieee80211_request_internal_scan(sdata,
ifibss->ssid, ifibss->ssid_len,
ifibss->fixed_channel ? ifibss->channel : NULL);
} else {
int interval = IEEE80211_SCAN_INTERVAL;
@ -897,6 +908,13 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata,
sdata->u.ibss.channel = params->channel;
sdata->u.ibss.fixed_channel = params->channel_fixed;
/* fix ourselves to that channel now already */
if (params->channel_fixed) {
sdata->local->oper_channel = params->channel;
WARN_ON(!ieee80211_set_channel_type(sdata->local, sdata,
NL80211_CHAN_NO_HT));
}
if (params->ie) {
sdata->u.ibss.ie = kmemdup(params->ie, params->ie_len,
GFP_KERNEL);
@ -951,7 +969,9 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)
kfree(sdata->u.ibss.ie);
skb = sdata->u.ibss.presp;
rcu_assign_pointer(sdata->u.ibss.presp, NULL);
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
sdata->vif.bss_conf.ibss_joined = false;
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED |
BSS_CHANGED_IBSS);
synchronize_rcu();
kfree_skb(skb);

51
net/mac80211/ieee80211_i.h
View file

@ -317,6 +317,7 @@ enum ieee80211_sta_flags {
IEEE80211_STA_MFP_ENABLED = BIT(6),
IEEE80211_STA_UAPSD_ENABLED = BIT(7),
IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
};
struct ieee80211_if_managed {
@ -327,7 +328,7 @@ struct ieee80211_if_managed {
struct work_struct work;
struct work_struct monitor_work;
struct work_struct chswitch_work;
struct work_struct beacon_loss_work;
struct work_struct beacon_connection_loss_work;
unsigned long probe_timeout;
int probe_send_count;
@ -359,6 +360,24 @@ struct ieee80211_if_managed {
int wmm_last_param_set;
u8 use_4addr;
/* Signal strength from the last Beacon frame in the current BSS. */
int last_beacon_signal;
/*
* Weighted average of the signal strength from Beacon frames in the
* current BSS. This is in units of 1/16 of the signal unit to maintain
* accuracy and to speed up calculations, i.e., the value need to be
* divided by 16 to get the actual value.
*/
int ave_beacon_signal;
/*
* Last Beacon frame signal strength average (ave_beacon_signal / 16)
* that triggered a cqm event. 0 indicates that no event has been
* generated for the current association.
*/
int last_cqm_event_signal;
};
enum ieee80211_ibss_request {
@ -646,8 +665,7 @@ struct ieee80211_local {
struct work_struct recalc_smps;
/* aggregated multicast list */
struct dev_addr_list *mc_list;
int mc_count;
struct netdev_hw_addr_list mc_list;
bool tim_in_locked_section; /* see ieee80211_beacon_get() */
@ -745,10 +763,11 @@ struct ieee80211_local {
int scan_channel_idx;
int scan_ies_len;
unsigned long leave_oper_channel_time;
enum mac80211_scan_state next_scan_state;
struct delayed_work scan_work;
struct ieee80211_sub_if_data *scan_sdata;
enum nl80211_channel_type oper_channel_type;
enum nl80211_channel_type _oper_channel_type;
struct ieee80211_channel *oper_channel, *csa_channel;
/* Temporary remain-on-channel for off-channel operations */
@ -979,7 +998,8 @@ int ieee80211_max_network_latency(struct notifier_block *nb,
unsigned long data, void *dummy);
void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
struct ieee80211_channel_sw_ie *sw_elem,
struct ieee80211_bss *bss);
struct ieee80211_bss *bss,
u64 timestamp);
void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata);
@ -1000,7 +1020,8 @@ void ieee80211_ibss_restart(struct ieee80211_sub_if_data *sdata);
/* scan/BSS handling */
void ieee80211_scan_work(struct work_struct *work);
int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
const u8 *ssid, u8 ssid_len);
const u8 *ssid, u8 ssid_len,
struct ieee80211_channel *chan);
int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
struct cfg80211_scan_request *req);
void ieee80211_scan_cancel(struct ieee80211_local *local);
@ -1078,8 +1099,6 @@ int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,
enum ieee80211_smps_mode smps, const u8 *da,
const u8 *bssid);
void ieee80211_sta_stop_rx_ba_session(struct ieee80211_sub_if_data *sdata, u8 *da,
u16 tid, u16 initiator, u16 reason);
void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
u16 initiator, u16 reason);
void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta);
@ -1155,7 +1174,7 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
int powersave);
void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
struct ieee80211_hdr *hdr);
void ieee80211_beacon_loss_work(struct work_struct *work);
void ieee80211_beacon_connection_loss_work(struct work_struct *work);
void ieee80211_wake_queues_by_reason(struct ieee80211_hw *hw,
enum queue_stop_reason reason);
@ -1210,6 +1229,20 @@ int ieee80211_wk_remain_on_channel(struct ieee80211_sub_if_data *sdata,
int ieee80211_wk_cancel_remain_on_channel(
struct ieee80211_sub_if_data *sdata, u64 cookie);
/* channel management */
enum ieee80211_chan_mode {
CHAN_MODE_UNDEFINED,
CHAN_MODE_HOPPING,
CHAN_MODE_FIXED,
};
enum ieee80211_chan_mode
ieee80211_get_channel_mode(struct ieee80211_local *local,
struct ieee80211_sub_if_data *ignore);
bool ieee80211_set_channel_type(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
enum nl80211_channel_type chantype);
#ifdef CONFIG_MAC80211_NOINLINE
#define debug_noinline noinline
#else

124
net/mac80211/iface.c
View file

@ -413,8 +413,7 @@ static int ieee80211_stop(struct net_device *dev)
netif_addr_lock_bh(dev);
spin_lock_bh(&local->filter_lock);
__dev_addr_unsync(&local->mc_list, &local->mc_count,
&dev->mc_list, &dev->mc_count);
__hw_addr_unsync(&local->mc_list, &dev->mc, dev->addr_len);
spin_unlock_bh(&local->filter_lock);
netif_addr_unlock_bh(dev);
@ -487,7 +486,7 @@ static int ieee80211_stop(struct net_device *dev)
cancel_work_sync(&sdata->u.mgd.work);
cancel_work_sync(&sdata->u.mgd.chswitch_work);
cancel_work_sync(&sdata->u.mgd.monitor_work);
cancel_work_sync(&sdata->u.mgd.beacon_loss_work);
cancel_work_sync(&sdata->u.mgd.beacon_connection_loss_work);
/*
* When we get here, the interface is marked down.
@ -597,8 +596,7 @@ static void ieee80211_set_multicast_list(struct net_device *dev)
sdata->flags ^= IEEE80211_SDATA_PROMISC;
}
spin_lock_bh(&local->filter_lock);
__dev_addr_sync(&local->mc_list, &local->mc_count,
&dev->mc_list, &dev->mc_count);
__hw_addr_sync(&local->mc_list, &dev->mc, dev->addr_len);
spin_unlock_bh(&local->filter_lock);
ieee80211_queue_work(&local->hw, &local->reconfig_filter);
}
@ -816,6 +814,118 @@ int ieee80211_if_change_type(struct ieee80211_sub_if_data *sdata,
return 0;
}
static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
struct net_device *dev,
enum nl80211_iftype type)
{
struct ieee80211_sub_if_data *sdata;
u64 mask, start, addr, val, inc;
u8 *m;
u8 tmp_addr[ETH_ALEN];
int i;
/* default ... something at least */
memcpy(dev->perm_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
if (is_zero_ether_addr(local->hw.wiphy->addr_mask) &&
local->hw.wiphy->n_addresses <= 1)
return;
mutex_lock(&local->iflist_mtx);
switch (type) {
case NL80211_IFTYPE_MONITOR:
/* doesn't matter */
break;
case NL80211_IFTYPE_WDS:
case NL80211_IFTYPE_AP_VLAN:
/* match up with an AP interface */
list_for_each_entry(sdata, &local->interfaces, list) {
if (sdata->vif.type != NL80211_IFTYPE_AP)
continue;
memcpy(dev->perm_addr, sdata->vif.addr, ETH_ALEN);
break;
}
/* keep default if no AP interface present */
break;
default:
/* assign a new address if possible -- try n_addresses first */
for (i = 0; i < local->hw.wiphy->n_addresses; i++) {
bool used = false;
list_for_each_entry(sdata, &local->interfaces, list) {
if (memcmp(local->hw.wiphy->addresses[i].addr,
sdata->vif.addr, ETH_ALEN) == 0) {
used = true;
break;
}
}
if (!used) {
memcpy(dev->perm_addr,
local->hw.wiphy->addresses[i].addr,
ETH_ALEN);
break;
}
}
/* try mask if available */
if (is_zero_ether_addr(local->hw.wiphy->addr_mask))
break;
m = local->hw.wiphy->addr_mask;
mask = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) |
((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);
if (__ffs64(mask) + hweight64(mask) != fls64(mask)) {
/* not a contiguous mask ... not handled now! */
printk(KERN_DEBUG "not contiguous\n");
break;
}
m = local->hw.wiphy->perm_addr;
start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) |
((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);
inc = 1ULL<<__ffs64(mask);
val = (start & mask);
addr = (start & ~mask) | (val & mask);
do {
bool used = false;
tmp_addr[5] = addr >> 0*8;
tmp_addr[4] = addr >> 1*8;
tmp_addr[3] = addr >> 2*8;
tmp_addr[2] = addr >> 3*8;
tmp_addr[1] = addr >> 4*8;
tmp_addr[0] = addr >> 5*8;
val += inc;
list_for_each_entry(sdata, &local->interfaces, list) {
if (memcmp(tmp_addr, sdata->vif.addr,
ETH_ALEN) == 0) {
used = true;
break;
}
}
if (!used) {
memcpy(dev->perm_addr, tmp_addr, ETH_ALEN);
break;
}
addr = (start & ~mask) | (val & mask);
} while (addr != start);
break;
}
mutex_unlock(&local->iflist_mtx);
}
int ieee80211_if_add(struct ieee80211_local *local, const char *name,
struct net_device **new_dev, enum nl80211_iftype type,
struct vif_params *params)
@ -845,8 +955,8 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
if (ret < 0)
goto fail;
memcpy(ndev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
memcpy(ndev->perm_addr, ndev->dev_addr, ETH_ALEN);
ieee80211_assign_perm_addr(local, ndev, type);
memcpy(ndev->dev_addr, ndev->perm_addr, ETH_ALEN);
SET_NETDEV_DEV(ndev, wiphy_dev(local->hw.wiphy));
/* don't use IEEE80211_DEV_TO_SUB_IF because it checks too much */

1
net/mac80211/key.c
View file

@ -140,6 +140,7 @@ static void ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
struct ieee80211_sub_if_data,
u.ap);
key->conf.ap_addr = sdata->dev->dev_addr;
ret = drv_set_key(key->local, SET_KEY, sdata, sta, &key->conf);
if (!ret) {

28
net/mac80211/main.c
View file

@ -71,7 +71,7 @@ void ieee80211_configure_filter(struct ieee80211_local *local)
spin_lock_bh(&local->filter_lock);
changed_flags = local->filter_flags ^ new_flags;
mc = drv_prepare_multicast(local, local->mc_count, local->mc_list);
mc = drv_prepare_multicast(local, &local->mc_list);
spin_unlock_bh(&local->filter_lock);
/* be a bit nasty */
@ -111,7 +111,7 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
channel_type = local->tmp_channel_type;
} else {
chan = local->oper_channel;
channel_type = local->oper_channel_type;
channel_type = local->_oper_channel_type;
}
if (chan != local->hw.conf.channel ||
@ -309,6 +309,8 @@ void ieee80211_restart_hw(struct ieee80211_hw *hw)
{
struct ieee80211_local *local = hw_to_local(hw);
trace_api_restart_hw(local);
/* use this reason, __ieee80211_resume will unblock it */
ieee80211_stop_queues_by_reason(hw,
IEEE80211_QUEUE_STOP_REASON_SUSPEND);
@ -388,6 +390,9 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
local->uapsd_max_sp_len = IEEE80211_DEFAULT_MAX_SP_LEN;
INIT_LIST_HEAD(&local->interfaces);
__hw_addr_init(&local->mc_list);
mutex_init(&local->iflist_mtx);
mutex_init(&local->scan_mtx);
@ -437,7 +442,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
struct ieee80211_local *local = hw_to_local(hw);
int result;
enum ieee80211_band band;
int channels, i, j, max_bitrates;
int channels, max_bitrates;
bool supp_ht;
static const u32 cipher_suites[] = {
WLAN_CIPHER_SUITE_WEP40,
@ -567,6 +572,8 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
local->hw.conf.listen_interval = local->hw.max_listen_interval;
local->hw.conf.dynamic_ps_forced_timeout = -1;
result = sta_info_start(local);
if (result < 0)
goto fail_sta_info;
@ -601,21 +608,6 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
ieee80211_led_init(local);
/* alloc internal scan request */
i = 0;
local->int_scan_req->ssids = &local->scan_ssid;
local->int_scan_req->n_ssids = 1;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (!hw->wiphy->bands[band])
continue;
for (j = 0; j < hw->wiphy->bands[band]->n_channels; j++) {
local->int_scan_req->channels[i] =
&hw->wiphy->bands[band]->channels[j];
i++;
}
}
local->int_scan_req->n_channels = i;
local->network_latency_notifier.notifier_call =
ieee80211_max_network_latency;
result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,

6
net/mac80211/mesh.c
View file

@ -287,8 +287,6 @@ void mesh_mgmt_ies_add(struct sk_buff *skb, struct ieee80211_sub_if_data *sdata)
*pos++ |= sdata->u.mesh.accepting_plinks ?
MESHCONF_CAPAB_ACCEPT_PLINKS : 0x00;
*pos++ = 0x00;
return;
}
u32 mesh_table_hash(u8 *addr, struct ieee80211_sub_if_data *sdata, struct mesh_table *tbl)
@ -601,10 +599,10 @@ static void ieee80211_mesh_rx_mgmt_action(struct ieee80211_sub_if_data *sdata,
struct ieee80211_rx_status *rx_status)
{
switch (mgmt->u.action.category) {
case MESH_PLINK_CATEGORY:
case WLAN_CATEGORY_MESH_PLINK:
mesh_rx_plink_frame(sdata, mgmt, len, rx_status);
break;
case MESH_PATH_SEL_CATEGORY:
case WLAN_CATEGORY_MESH_PATH_SEL:
mesh_rx_path_sel_frame(sdata, mgmt, len);
break;
}

2
net/mac80211/mesh.h
View file

@ -209,8 +209,6 @@ struct mesh_rmc {
#define MESH_MAX_MPATHS 1024
/* Pending ANA approval */
#define MESH_PLINK_CATEGORY 30
#define MESH_PATH_SEL_CATEGORY 32
#define MESH_PATH_SEL_ACTION 0
/* PERR reason codes */

5
net/mac80211/mesh_hwmp.c
View file

@ -132,7 +132,7 @@ static int mesh_path_sel_frame_tx(enum mpath_frame_type action, u8 flags,
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
/* BSSID == SA */
memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
mgmt->u.action.category = MESH_PATH_SEL_CATEGORY;
mgmt->u.action.category = WLAN_CATEGORY_MESH_PATH_SEL;
mgmt->u.action.u.mesh_action.action_code = MESH_PATH_SEL_ACTION;
switch (action) {
@ -225,7 +225,7 @@ int mesh_path_error_tx(u8 ttl, u8 *target, __le32 target_sn,
memcpy(mgmt->da, ra, ETH_ALEN);
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
/* BSSID is left zeroed, wildcard value */
mgmt->u.action.category = MESH_PATH_SEL_CATEGORY;
mgmt->u.action.category = WLAN_CATEGORY_MESH_PATH_SEL;
mgmt->u.action.u.mesh_action.action_code = MESH_PATH_SEL_ACTION;
ie_len = 15;
pos = skb_put(skb, 2 + ie_len);
@ -624,7 +624,6 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
fail:
rcu_read_unlock();
sdata->u.mesh.mshstats.dropped_frames_no_route++;
return;
}
static void hwmp_perr_frame_process(struct ieee80211_sub_if_data *sdata,

2
net/mac80211/mesh_plink.c
View file

@ -172,7 +172,7 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
memcpy(mgmt->da, da, ETH_ALEN);
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
/* BSSID is left zeroed, wildcard value */
mgmt->u.action.category = MESH_PLINK_CATEGORY;
mgmt->u.action.category = WLAN_CATEGORY_MESH_PLINK;
mgmt->u.action.u.plink_action.action_code = action;
if (action == PLINK_CLOSE)

310
net/mac80211/mlme.c
View file

@ -47,6 +47,13 @@
*/
#define IEEE80211_PROBE_WAIT (HZ / 2)
/*
* Weight given to the latest Beacon frame when calculating average signal
* strength for Beacon frames received in the current BSS. This must be
* between 1 and 15.
*/
#define IEEE80211_SIGNAL_AVE_WEIGHT 3
#define TMR_RUNNING_TIMER 0
#define TMR_RUNNING_CHANSW 1
@ -130,11 +137,14 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta;
u32 changed = 0;
u16 ht_opmode;
bool enable_ht = true, ht_changed;
bool enable_ht = true;
enum nl80211_channel_type prev_chantype;
enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
prev_chantype = sdata->vif.bss_conf.channel_type;
/* HT is not supported */
if (!sband->ht_cap.ht_supported)
enable_ht = false;
@ -165,38 +175,37 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
}
}
ht_changed = conf_is_ht(&local->hw.conf) != enable_ht ||
channel_type != local->hw.conf.channel_type;
if (local->tmp_channel)
local->tmp_channel_type = channel_type;
local->oper_channel_type = channel_type;
if (ht_changed) {
/* channel_type change automatically detected */
ieee80211_hw_config(local, 0);
if (!ieee80211_set_channel_type(local, sdata, channel_type)) {
/* can only fail due to HT40+/- mismatch */
channel_type = NL80211_CHAN_HT20;
WARN_ON(!ieee80211_set_channel_type(local, sdata, channel_type));
}
/* channel_type change automatically detected */
ieee80211_hw_config(local, 0);
if (prev_chantype != channel_type) {
rcu_read_lock();
sta = sta_info_get(sdata, bssid);
if (sta)
rate_control_rate_update(local, sband, sta,
IEEE80211_RC_HT_CHANGED,
local->oper_channel_type);
channel_type);
rcu_read_unlock();
}
/* disable HT */
if (!enable_ht)
return 0;
}
ht_opmode = le16_to_cpu(hti->operation_mode);
/* if bss configuration changed store the new one */
if (!sdata->ht_opmode_valid ||
sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
if (sdata->ht_opmode_valid != enable_ht ||
sdata->vif.bss_conf.ht_operation_mode != ht_opmode ||
prev_chantype != channel_type) {
changed |= BSS_CHANGED_HT;
sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
sdata->ht_opmode_valid = true;
sdata->ht_opmode_valid = enable_ht;
}
return changed;
@ -206,7 +215,7 @@ static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
const u8 *bssid, u16 stype, u16 reason,
void *cookie)
void *cookie, bool send_frame)
{
struct ieee80211_local *local = sdata->local;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
@ -243,7 +252,11 @@ static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len);
if (!(ifmgd->flags & IEEE80211_STA_MFP_ENABLED))
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
ieee80211_tx_skb(sdata, skb);
if (send_frame)
ieee80211_tx_skb(sdata, skb);
else
kfree_skb(skb);
}
void ieee80211_send_pspoll(struct ieee80211_local *local,
@ -329,7 +342,11 @@ static void ieee80211_chswitch_work(struct work_struct *work)
goto out;
sdata->local->oper_channel = sdata->local->csa_channel;
ieee80211_hw_config(sdata->local, IEEE80211_CONF_CHANGE_CHANNEL);
if (!sdata->local->ops->channel_switch) {
/* call "hw_config" only if doing sw channel switch */
ieee80211_hw_config(sdata->local,
IEEE80211_CONF_CHANGE_CHANNEL);
}
/* XXX: shouldn't really modify cfg80211-owned data! */
ifmgd->associated->channel = sdata->local->oper_channel;
@ -341,6 +358,29 @@ static void ieee80211_chswitch_work(struct work_struct *work)
mutex_unlock(&ifmgd->mtx);
}
void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
{
struct ieee80211_sub_if_data *sdata;
struct ieee80211_if_managed *ifmgd;
sdata = vif_to_sdata(vif);
ifmgd = &sdata->u.mgd;
trace_api_chswitch_done(sdata, success);
if (!success) {
/*
* If the channel switch was not successful, stay
* around on the old channel. We currently lack
* good handling of this situation, possibly we
* should just drop the association.
*/
sdata->local->csa_channel = sdata->local->oper_channel;
}
ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
}
EXPORT_SYMBOL(ieee80211_chswitch_done);
static void ieee80211_chswitch_timer(unsigned long data)
{
struct ieee80211_sub_if_data *sdata =
@ -357,7 +397,8 @@ static void ieee80211_chswitch_timer(unsigned long data)
void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
struct ieee80211_channel_sw_ie *sw_elem,
struct ieee80211_bss *bss)
struct ieee80211_bss *bss,
u64 timestamp)
{
struct cfg80211_bss *cbss =
container_of((void *)bss, struct cfg80211_bss, priv);
@ -385,10 +426,29 @@ void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
sdata->local->csa_channel = new_ch;
if (sdata->local->ops->channel_switch) {
/* use driver's channel switch callback */
struct ieee80211_channel_switch ch_switch;
memset(&ch_switch, 0, sizeof(ch_switch));
ch_switch.timestamp = timestamp;
if (sw_elem->mode) {
ch_switch.block_tx = true;
ieee80211_stop_queues_by_reason(&sdata->local->hw,
IEEE80211_QUEUE_STOP_REASON_CSA);
}
ch_switch.channel = new_ch;
ch_switch.count = sw_elem->count;
ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
drv_channel_switch(sdata->local, &ch_switch);
return;
}
/* channel switch handled in software */
if (sw_elem->count <= 1) {
ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
} else {
ieee80211_stop_queues_by_reason(&sdata->local->hw,
if (sw_elem->mode)
ieee80211_stop_queues_by_reason(&sdata->local->hw,
IEEE80211_QUEUE_STOP_REASON_CSA);
ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
mod_timer(&ifmgd->chswitch_timer,
@ -467,6 +527,7 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
{
struct ieee80211_sub_if_data *sdata, *found = NULL;
int count = 0;
int timeout;
if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
local->ps_sdata = NULL;
@ -500,6 +561,26 @@ void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
beaconint_us = ieee80211_tu_to_usec(
found->vif.bss_conf.beacon_int);
timeout = local->hw.conf.dynamic_ps_forced_timeout;
if (timeout < 0) {
/*
* The 2 second value is there for compatibility until
* the PM_QOS_NETWORK_LATENCY is configured with real
* values.
*/
if (latency == 2000000000)
timeout = 100;
else if (latency <= 50000)
timeout = 300;
else if (latency <= 100000)
timeout = 100;
else if (latency <= 500000)
timeout = 50;
else
timeout = 0;
}
local->hw.conf.dynamic_ps_timeout = timeout;
if (beaconint_us > latency) {
local->ps_sdata = NULL;
} else {
@ -592,6 +673,9 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
int count;
u8 *pos, uapsd_queues = 0;
if (!local->ops->conf_tx)
return;
if (local->hw.queues < 4)
return;
@ -666,11 +750,15 @@ static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
params.aifs, params.cw_min, params.cw_max, params.txop,
params.uapsd);
#endif
if (drv_conf_tx(local, queue, &params) && local->ops->conf_tx)
if (drv_conf_tx(local, queue, &params))
printk(KERN_DEBUG "%s: failed to set TX queue "
"parameters for queue %d\n",
wiphy_name(local->hw.wiphy), queue);
}
/* enable WMM or activate new settings */
local->hw.conf.flags |= IEEE80211_CONF_QOS;
drv_config(local, IEEE80211_CONF_CHANGE_QOS);
}
static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
@ -731,6 +819,8 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
sdata->u.mgd.associated = cbss;
memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
/* just to be sure */
sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL |
IEEE80211_STA_BEACON_POLL);
@ -756,6 +846,11 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
/* And the BSSID changed - we're associated now */
bss_info_changed |= BSS_CHANGED_BSSID;
/* Tell the driver to monitor connection quality (if supported) */
if ((local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI) &&
sdata->vif.bss_conf.cqm_rssi_thold)
bss_info_changed |= BSS_CHANGED_CQM;
ieee80211_bss_info_change_notify(sdata, bss_info_changed);
mutex_lock(&local->iflist_mtx);
@ -767,7 +862,8 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
netif_carrier_on(sdata->dev);
}
static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata)
static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
bool remove_sta)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
@ -819,7 +915,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata)
ieee80211_set_wmm_default(sdata);
/* channel(_type) changes are handled by ieee80211_hw_config */
local->oper_channel_type = NL80211_CHAN_NO_HT;
WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT));
/* on the next assoc, re-program HT parameters */
sdata->ht_opmode_valid = false;
@ -836,11 +932,12 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata)
ieee80211_hw_config(local, config_changed);
/* And the BSSID changed -- not very interesting here */
changed |= BSS_CHANGED_BSSID;
/* The BSSID (not really interesting) and HT changed */
changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
ieee80211_bss_info_change_notify(sdata, changed);
sta_info_destroy_addr(sdata, bssid);
if (remove_sta)
sta_info_destroy_addr(sdata, bssid);
}
void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
@ -857,6 +954,9 @@ void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
if (is_multicast_ether_addr(hdr->addr1))
return;
if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
return;
mod_timer(&sdata->u.mgd.conn_mon_timer,
round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
}
@ -934,23 +1034,72 @@ static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
mutex_unlock(&ifmgd->mtx);
}
void ieee80211_beacon_loss_work(struct work_struct *work)
static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_local *local = sdata->local;
u8 bssid[ETH_ALEN];
mutex_lock(&ifmgd->mtx);
if (!ifmgd->associated) {
mutex_unlock(&ifmgd->mtx);
return;
}
memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
printk(KERN_DEBUG "Connection to AP %pM lost.\n", bssid);
ieee80211_set_disassoc(sdata, true);
ieee80211_recalc_idle(local);
mutex_unlock(&ifmgd->mtx);
/*
* must be outside lock due to cfg80211,
* but that's not a problem.
*/
ieee80211_send_deauth_disassoc(sdata, bssid,
IEEE80211_STYPE_DEAUTH,
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
NULL, true);
}
void ieee80211_beacon_connection_loss_work(struct work_struct *work)
{
struct ieee80211_sub_if_data *sdata =
container_of(work, struct ieee80211_sub_if_data,
u.mgd.beacon_loss_work);
u.mgd.beacon_connection_loss_work);
ieee80211_mgd_probe_ap(sdata, true);
if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
__ieee80211_connection_loss(sdata);
else
ieee80211_mgd_probe_ap(sdata, true);
}
void ieee80211_beacon_loss(struct ieee80211_vif *vif)
{
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
struct ieee80211_hw *hw = &sdata->local->hw;
ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.beacon_loss_work);
trace_api_beacon_loss(sdata);
WARN_ON(hw->flags & IEEE80211_HW_CONNECTION_MONITOR);
ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
}
EXPORT_SYMBOL(ieee80211_beacon_loss);
void ieee80211_connection_loss(struct ieee80211_vif *vif)
{
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
struct ieee80211_hw *hw = &sdata->local->hw;
trace_api_connection_loss(sdata);
WARN_ON(!(hw->flags & IEEE80211_HW_CONNECTION_MONITOR));
ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
}
EXPORT_SYMBOL(ieee80211_connection_loss);
static enum rx_mgmt_action __must_check
ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_mgmt *mgmt, size_t len)
@ -971,7 +1120,7 @@ ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
printk(KERN_DEBUG "%s: deauthenticated from %pM (Reason: %u)\n",
sdata->name, bssid, reason_code);
ieee80211_set_disassoc(sdata);
ieee80211_set_disassoc(sdata, true);
ieee80211_recalc_idle(sdata->local);
return RX_MGMT_CFG80211_DEAUTH;
@ -1001,7 +1150,7 @@ ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
printk(KERN_DEBUG "%s: disassociated from %pM (Reason: %u)\n",
sdata->name, mgmt->sa, reason_code);
ieee80211_set_disassoc(sdata);
ieee80211_set_disassoc(sdata, true);
ieee80211_recalc_idle(sdata->local);
return RX_MGMT_CFG80211_DISASSOC;
}
@ -1215,7 +1364,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
ETH_ALEN) == 0)) {
struct ieee80211_channel_sw_ie *sw_elem =
(struct ieee80211_channel_sw_ie *)elems->ch_switch_elem;
ieee80211_sta_process_chanswitch(sdata, sw_elem, bss);
ieee80211_sta_process_chanswitch(sdata, sw_elem,
bss, rx_status->mactime);
}
}
@ -1254,12 +1404,17 @@ static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
mutex_lock(&sdata->local->iflist_mtx);
ieee80211_recalc_ps(sdata->local, -1);
mutex_unlock(&sdata->local->iflist_mtx);
if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
return;
/*
* We've received a probe response, but are not sure whether
* we have or will be receiving any beacons or data, so let's
* schedule the timers again, just in case.
*/
mod_beacon_timer(sdata);
mod_timer(&ifmgd->conn_mon_timer,
round_jiffies_up(jiffies +
IEEE80211_CONNECTION_IDLE_TIME));
@ -1293,6 +1448,7 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
struct ieee80211_rx_status *rx_status)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
size_t baselen;
struct ieee802_11_elems elems;
struct ieee80211_local *local = sdata->local;
@ -1328,6 +1484,41 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
if (memcmp(bssid, mgmt->bssid, ETH_ALEN) != 0)
return;
/* Track average RSSI from the Beacon frames of the current AP */
ifmgd->last_beacon_signal = rx_status->signal;
if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
ifmgd->ave_beacon_signal = rx_status->signal;
ifmgd->last_cqm_event_signal = 0;
} else {
ifmgd->ave_beacon_signal =
(IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
(16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
ifmgd->ave_beacon_signal) / 16;
}
if (bss_conf->cqm_rssi_thold &&
!(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
int sig = ifmgd->ave_beacon_signal / 16;
int last_event = ifmgd->last_cqm_event_signal;
int thold = bss_conf->cqm_rssi_thold;
int hyst = bss_conf->cqm_rssi_hyst;
if (sig < thold &&
(last_event == 0 || sig < last_event - hyst)) {
ifmgd->last_cqm_event_signal = sig;
ieee80211_cqm_rssi_notify(
&sdata->vif,
NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
GFP_KERNEL);
} else if (sig > thold &&
(last_event == 0 || sig > last_event + hyst)) {
ifmgd->last_cqm_event_signal = sig;
ieee80211_cqm_rssi_notify(
&sdata->vif,
NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
GFP_KERNEL);
}
}
if (ifmgd->flags & IEEE80211_STA_BEACON_POLL) {
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
if (net_ratelimit()) {
@ -1506,7 +1697,8 @@ static void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
ieee80211_sta_process_chanswitch(sdata,
&mgmt->u.action.u.chan_switch.sw_elem,
(void *)ifmgd->associated->priv);
(void *)ifmgd->associated->priv,
rx_status->mactime);
break;
}
mutex_unlock(&ifmgd->mtx);
@ -1613,7 +1805,7 @@ static void ieee80211_sta_work(struct work_struct *work)
printk(KERN_DEBUG "No probe response from AP %pM"
" after %dms, disconnecting.\n",
bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ);
ieee80211_set_disassoc(sdata);
ieee80211_set_disassoc(sdata, true);
ieee80211_recalc_idle(local);
mutex_unlock(&ifmgd->mtx);
/*
@ -1623,7 +1815,7 @@ static void ieee80211_sta_work(struct work_struct *work)
ieee80211_send_deauth_disassoc(sdata, bssid,
IEEE80211_STYPE_DEAUTH,
WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
NULL);
NULL, true);
mutex_lock(&ifmgd->mtx);
}
}
@ -1640,7 +1832,8 @@ static void ieee80211_sta_bcn_mon_timer(unsigned long data)
if (local->quiescing)
return;
ieee80211_queue_work(&sdata->local->hw, &sdata->u.mgd.beacon_loss_work);
ieee80211_queue_work(&sdata->local->hw,
&sdata->u.mgd.beacon_connection_loss_work);
}
static void ieee80211_sta_conn_mon_timer(unsigned long data)
@ -1692,7 +1885,7 @@ void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata)
*/
cancel_work_sync(&ifmgd->work);
cancel_work_sync(&ifmgd->beacon_loss_work);
cancel_work_sync(&ifmgd->beacon_connection_loss_work);
if (del_timer_sync(&ifmgd->timer))
set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running);
@ -1726,7 +1919,8 @@ void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
INIT_WORK(&ifmgd->work, ieee80211_sta_work);
INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
INIT_WORK(&ifmgd->beacon_loss_work, ieee80211_beacon_loss_work);
INIT_WORK(&ifmgd->beacon_connection_loss_work,
ieee80211_beacon_connection_loss_work);
setup_timer(&ifmgd->timer, ieee80211_sta_timer,
(unsigned long) sdata);
setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
@ -1805,6 +1999,9 @@ int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
struct ieee80211_work *wk;
u16 auth_alg;
if (req->local_state_change)
return 0; /* no need to update mac80211 state */
switch (req->auth_type) {
case NL80211_AUTHTYPE_OPEN_SYSTEM:
auth_alg = WLAN_AUTH_OPEN;
@ -1913,7 +2110,7 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
}
/* Trying to reassociate - clear previous association state */
ieee80211_set_disassoc(sdata);
ieee80211_set_disassoc(sdata, true);
}
mutex_unlock(&ifmgd->mtx);
@ -2017,7 +2214,7 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
if (ifmgd->associated == req->bss) {
bssid = req->bss->bssid;
ieee80211_set_disassoc(sdata);
ieee80211_set_disassoc(sdata, true);
mutex_unlock(&ifmgd->mtx);
} else {
bool not_auth_yet = false;
@ -2061,9 +2258,9 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
printk(KERN_DEBUG "%s: deauthenticating from %pM by local choice (reason=%d)\n",
sdata->name, bssid, req->reason_code);
ieee80211_send_deauth_disassoc(sdata, bssid,
IEEE80211_STYPE_DEAUTH, req->reason_code,
cookie);
ieee80211_send_deauth_disassoc(sdata, bssid, IEEE80211_STYPE_DEAUTH,
req->reason_code, cookie,
!req->local_state_change);
ieee80211_recalc_idle(sdata->local);
@ -2075,6 +2272,7 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
void *cookie)
{
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
u8 bssid[ETH_ALEN];
mutex_lock(&ifmgd->mtx);
@ -2092,13 +2290,15 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
printk(KERN_DEBUG "%s: disassociating from %pM by local choice (reason=%d)\n",
sdata->name, req->bss->bssid, req->reason_code);
ieee80211_set_disassoc(sdata);
memcpy(bssid, req->bss->bssid, ETH_ALEN);
ieee80211_set_disassoc(sdata, false);
mutex_unlock(&ifmgd->mtx);
ieee80211_send_deauth_disassoc(sdata, req->bss->bssid,
IEEE80211_STYPE_DISASSOC, req->reason_code,
cookie);
cookie, !req->local_state_change);
sta_info_destroy_addr(sdata, bssid);
ieee80211_recalc_idle(sdata->local);
@ -2118,7 +2318,7 @@ int ieee80211_mgd_action(struct ieee80211_sub_if_data *sdata,
if ((chan != local->tmp_channel ||
channel_type != local->tmp_channel_type) &&
(chan != local->oper_channel ||
channel_type != local->oper_channel_type))
channel_type != local->_oper_channel_type))
return -EBUSY;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + len);
@ -2139,3 +2339,15 @@ int ieee80211_mgd_action(struct ieee80211_sub_if_data *sdata,
*cookie = (unsigned long) skb;
return 0;
}
void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
enum nl80211_cqm_rssi_threshold_event rssi_event,
gfp_t gfp)
{
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
trace_api_cqm_rssi_notify(sdata, rssi_event);
cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
}
EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);

2
net/mac80211/pm.c
View file

@ -46,7 +46,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
list_for_each_entry_rcu(sta, &local->sta_list, list) {
set_sta_flags(sta, WLAN_STA_SUSPEND);
set_sta_flags(sta, WLAN_STA_BLOCK_BA);
ieee80211_sta_tear_down_BA_sessions(sta);
}
}

2
net/mac80211/rc80211_minstrel.c
View file

@ -542,7 +542,7 @@ minstrel_free(void *priv)
kfree(priv);
}
static struct rate_control_ops mac80211_minstrel = {
struct rate_control_ops mac80211_minstrel = {
.name = "minstrel",
.tx_status = minstrel_tx_status,
.get_rate = minstrel_get_rate,

11
net/mac80211/rc80211_minstrel.h
View file

@ -80,7 +80,18 @@ struct minstrel_priv {
unsigned int lookaround_rate_mrr;
};
struct minstrel_debugfs_info {
size_t len;
char buf[];
};
extern struct rate_control_ops mac80211_minstrel;
void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
void minstrel_remove_sta_debugfs(void *priv, void *priv_sta);
/* debugfs */
int minstrel_stats_open(struct inode *inode, struct file *file);
ssize_t minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos);
int minstrel_stats_release(struct inode *inode, struct file *file);
#endif

41
net/mac80211/rc80211_minstrel_debugfs.c
View file

@ -53,21 +53,15 @@
#include <net/mac80211.h>
#include "rc80211_minstrel.h"
struct minstrel_stats_info {
struct minstrel_sta_info *mi;
char buf[4096];
size_t len;
};
static int
int
minstrel_stats_open(struct inode *inode, struct file *file)
{
struct minstrel_sta_info *mi = inode->i_private;
struct minstrel_stats_info *ms;
struct minstrel_debugfs_info *ms;
unsigned int i, tp, prob, eprob;
char *p;
ms = kmalloc(sizeof(*ms), GFP_KERNEL);
ms = kmalloc(sizeof(*ms) + 4096, GFP_KERNEL);
if (!ms)
return -ENOMEM;
@ -107,36 +101,19 @@ minstrel_stats_open(struct inode *inode, struct file *file)
return 0;
}
static ssize_t
minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *o)
ssize_t
minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos)
{
struct minstrel_stats_info *ms;
char *src;
struct minstrel_debugfs_info *ms;
ms = file->private_data;
src = ms->buf;
len = min(len, ms->len);
if (len <= *o)
return 0;
src += *o;
len -= *o;
*o += len;
if (copy_to_user(buf, src, len))
return -EFAULT;
return len;
return simple_read_from_buffer(buf, len, ppos, ms->buf, ms->len);
}
static int
int
minstrel_stats_release(struct inode *inode, struct file *file)
{
struct minstrel_stats_info *ms = file->private_data;
kfree(ms);
kfree(file->private_data);
return 0;
}

108
net/mac80211/rx.c
View file

@ -39,7 +39,7 @@ static struct sk_buff *remove_monitor_info(struct ieee80211_local *local,
{
if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS) {
if (likely(skb->len > FCS_LEN))
skb_trim(skb, skb->len - FCS_LEN);
__pskb_trim(skb, skb->len - FCS_LEN);
else {
/* driver bug */
WARN_ON(1);
@ -81,8 +81,6 @@ ieee80211_rx_radiotap_len(struct ieee80211_local *local,
len += 8;
if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
len += 1;
if (local->hw.flags & IEEE80211_HW_NOISE_DBM)
len += 1;
if (len & 1) /* padding for RX_FLAGS if necessary */
len++;
@ -179,14 +177,6 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
pos++;
}
/* IEEE80211_RADIOTAP_DBM_ANTNOISE */
if (local->hw.flags & IEEE80211_HW_NOISE_DBM) {
*pos = status->noise;
rthdr->it_present |=
cpu_to_le32(1 << IEEE80211_RADIOTAP_DBM_ANTNOISE);
pos++;
}
/* IEEE80211_RADIOTAP_LOCK_QUALITY is missing */
/* IEEE80211_RADIOTAP_ANTENNA */
@ -236,6 +226,12 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb,
if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)
present_fcs_len = FCS_LEN;
/* make sure hdr->frame_control is on the linear part */
if (!pskb_may_pull(origskb, 2)) {
dev_kfree_skb(origskb);
return NULL;
}
if (!local->monitors) {
if (should_drop_frame(origskb, present_fcs_len)) {
dev_kfree_skb(origskb);
@ -493,7 +489,7 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
if (ieee80211_is_action(hdr->frame_control)) {
mgmt = (struct ieee80211_mgmt *)hdr;
if (mgmt->u.action.category != MESH_PLINK_CATEGORY)
if (mgmt->u.action.category != WLAN_CATEGORY_MESH_PLINK)
return RX_DROP_MONITOR;
return RX_CONTINUE;
}
@ -723,14 +719,16 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx,
tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
if (sta->ampdu_mlme.tid_state_rx[tid] != HT_AGG_STATE_OPERATIONAL)
goto dont_reorder;
spin_lock(&sta->lock);
if (!sta->ampdu_mlme.tid_active_rx[tid])
goto dont_reorder_unlock;
tid_agg_rx = sta->ampdu_mlme.tid_rx[tid];
/* qos null data frames are excluded */
if (unlikely(hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_NULLFUNC)))
goto dont_reorder;
goto dont_reorder_unlock;
/* new, potentially un-ordered, ampdu frame - process it */
@ -742,15 +740,20 @@ static void ieee80211_rx_reorder_ampdu(struct ieee80211_rx_data *rx,
/* if this mpdu is fragmented - terminate rx aggregation session */
sc = le16_to_cpu(hdr->seq_ctrl);
if (sc & IEEE80211_SCTL_FRAG) {
ieee80211_sta_stop_rx_ba_session(sta->sdata, sta->sta.addr,
tid, 0, WLAN_REASON_QSTA_REQUIRE_SETUP);
spin_unlock(&sta->lock);
__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
WLAN_REASON_QSTA_REQUIRE_SETUP);
dev_kfree_skb(skb);
return;
}
if (ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, skb, frames))
if (ieee80211_sta_manage_reorder_buf(hw, tid_agg_rx, skb, frames)) {
spin_unlock(&sta->lock);
return;
}
dont_reorder_unlock:
spin_unlock(&sta->lock);
dont_reorder:
__skb_queue_tail(frames, skb);
}
@ -897,6 +900,7 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
rx->key = key;
return RX_CONTINUE;
} else {
u8 keyid;
/*
* The device doesn't give us the IV so we won't be
* able to look up the key. That's ok though, we
@ -919,7 +923,8 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
* no need to call ieee80211_wep_get_keyidx,
* it verifies a bunch of things we've done already
*/
keyidx = rx->skb->data[hdrlen + 3] >> 6;
skb_copy_bits(rx->skb, hdrlen + 3, &keyid, 1);
keyidx = keyid >> 6;
rx->key = rcu_dereference(rx->sdata->keys[keyidx]);
@ -940,6 +945,11 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
return RX_DROP_MONITOR;
}
if (skb_linearize(rx->skb))
return RX_DROP_UNUSABLE;
hdr = (struct ieee80211_hdr *)rx->skb->data;
/* Check for weak IVs if possible */
if (rx->sta && rx->key->conf.alg == ALG_WEP &&
ieee80211_is_data(hdr->frame_control) &&
@ -1078,7 +1088,6 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx)
sta->rx_fragments++;
sta->rx_bytes += rx->skb->len;
sta->last_signal = status->signal;
sta->last_noise = status->noise;
/*
* Change STA power saving mode only at the end of a frame
@ -1241,6 +1250,15 @@ ieee80211_rx_h_defragment(struct ieee80211_rx_data *rx)
}
I802_DEBUG_INC(rx->local->rx_handlers_fragments);
if (skb_linearize(rx->skb))
return RX_DROP_UNUSABLE;
/*
* skb_linearize() might change the skb->data and
* previously cached variables (in this case, hdr) need to
* be refreshed with the new data.
*/
hdr = (struct ieee80211_hdr *)rx->skb->data;
seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
if (frag == 0) {
@ -1406,21 +1424,24 @@ static int
ieee80211_drop_unencrypted_mgmt(struct ieee80211_rx_data *rx)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);
__le16 fc = hdr->frame_control;
int res;
res = ieee80211_drop_unencrypted(rx, fc);
if (unlikely(res))
return res;
/*
* Pass through unencrypted frames if the hardware has
* decrypted them already.
*/
if (status->flag & RX_FLAG_DECRYPTED)
return 0;
if (rx->sta && test_sta_flags(rx->sta, WLAN_STA_MFP)) {
if (unlikely(ieee80211_is_unicast_robust_mgmt_frame(rx->skb) &&
if (unlikely(!ieee80211_has_protected(fc) &&
ieee80211_is_unicast_robust_mgmt_frame(rx->skb) &&
rx->key))
return -EACCES;
/* BIP does not use Protected field, so need to check MMIE */
if (unlikely(ieee80211_is_multicast_robust_mgmt_frame(rx->skb) &&
ieee80211_get_mmie_keyidx(rx->skb) < 0 &&
rx->key))
ieee80211_get_mmie_keyidx(rx->skb) < 0))
return -EACCES;
/*
* When using MFP, Action frames are not allowed prior to
@ -1598,6 +1619,9 @@ ieee80211_rx_h_amsdu(struct ieee80211_rx_data *rx)
skb->dev = dev;
__skb_queue_head_init(&frame_list);
if (skb_linearize(skb))
return RX_DROP_UNUSABLE;
ieee80211_amsdu_to_8023s(skb, &frame_list, dev->dev_addr,
rx->sdata->vif.type,
rx->local->hw.extra_tx_headroom);
@ -1796,10 +1820,12 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames)
if (ieee80211_is_back_req(bar->frame_control)) {
if (!rx->sta)
return RX_DROP_MONITOR;
spin_lock(&rx->sta->lock);
tid = le16_to_cpu(bar->control) >> 12;
if (rx->sta->ampdu_mlme.tid_state_rx[tid]
!= HT_AGG_STATE_OPERATIONAL)
if (!rx->sta->ampdu_mlme.tid_active_rx[tid]) {
spin_unlock(&rx->sta->lock);
return RX_DROP_MONITOR;
}
tid_agg_rx = rx->sta->ampdu_mlme.tid_rx[tid];
start_seq_num = le16_to_cpu(bar->start_seq_num) >> 4;
@ -1813,6 +1839,7 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames)
ieee80211_release_reorder_frames(hw, tid_agg_rx, start_seq_num,
frames);
kfree_skb(skb);
spin_unlock(&rx->sta->lock);
return RX_QUEUED;
}
@ -1974,8 +2001,8 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
goto handled;
}
break;
case MESH_PLINK_CATEGORY:
case MESH_PATH_SEL_CATEGORY:
case WLAN_CATEGORY_MESH_PLINK:
case WLAN_CATEGORY_MESH_PATH_SEL:
if (ieee80211_vif_is_mesh(&sdata->vif))
return ieee80211_mesh_rx_mgmt(sdata, rx->skb);
break;
@ -2372,29 +2399,42 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw,
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
struct ieee80211_hdr *hdr;
__le16 fc;
struct ieee80211_rx_data rx;
int prepares;
struct ieee80211_sub_if_data *prev = NULL;
struct sk_buff *skb_new;
struct sta_info *sta, *tmp;
bool found_sta = false;
int err = 0;
hdr = (struct ieee80211_hdr *)skb->data;
fc = ((struct ieee80211_hdr *)skb->data)->frame_control;
memset(&rx, 0, sizeof(rx));
rx.skb = skb;
rx.local = local;
if (ieee80211_is_data(hdr->frame_control) || ieee80211_is_mgmt(hdr->frame_control))
if (ieee80211_is_data(fc) || ieee80211_is_mgmt(fc))
local->dot11ReceivedFragmentCount++;
if (unlikely(test_bit(SCAN_HW_SCANNING, &local->scanning) ||
test_bit(SCAN_OFF_CHANNEL, &local->scanning)))
rx.flags |= IEEE80211_RX_IN_SCAN;
if (ieee80211_is_mgmt(fc))
err = skb_linearize(skb);
else
err = !pskb_may_pull(skb, ieee80211_hdrlen(fc));
if (err) {
dev_kfree_skb(skb);
return;
}
hdr = (struct ieee80211_hdr *)skb->data;
ieee80211_parse_qos(&rx);
ieee80211_verify_alignment(&rx);
if (ieee80211_is_data(hdr->frame_control)) {
if (ieee80211_is_data(fc)) {
for_each_sta_info(local, hdr->addr2, sta, tmp) {
rx.sta = sta;
found_sta = true;

126
net/mac80211/scan.c
View file

@ -14,6 +14,8 @@
#include <linux/if_arp.h>
#include <linux/rtnetlink.h>
#include <linux/pm_qos_params.h>
#include <net/sch_generic.h>
#include <linux/slab.h>
#include <net/mac80211.h>
@ -83,7 +85,7 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
{
struct cfg80211_bss *cbss;
struct ieee80211_bss *bss;
int clen;
int clen, srlen;
s32 signal = 0;
if (local->hw.flags & IEEE80211_HW_SIGNAL_DBM)
@ -112,23 +114,24 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
bss->dtim_period = tim_ie->dtim_period;
}
bss->supp_rates_len = 0;
/* replace old supported rates if we get new values */
srlen = 0;
if (elems->supp_rates) {
clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
clen = IEEE80211_MAX_SUPP_RATES;
if (clen > elems->supp_rates_len)
clen = elems->supp_rates_len;
memcpy(&bss->supp_rates[bss->supp_rates_len], elems->supp_rates,
clen);
bss->supp_rates_len += clen;
memcpy(bss->supp_rates, elems->supp_rates, clen);
srlen += clen;
}
if (elems->ext_supp_rates) {
clen = IEEE80211_MAX_SUPP_RATES - bss->supp_rates_len;
clen = IEEE80211_MAX_SUPP_RATES - srlen;
if (clen > elems->ext_supp_rates_len)
clen = elems->ext_supp_rates_len;
memcpy(&bss->supp_rates[bss->supp_rates_len],
elems->ext_supp_rates, clen);
bss->supp_rates_len += clen;
memcpy(bss->supp_rates + srlen, elems->ext_supp_rates, clen);
srlen += clen;
}
if (srlen)
bss->supp_rates_len = srlen;
bss->wmm_used = elems->wmm_param || elems->wmm_info;
bss->uapsd_supported = is_uapsd_supported(elems);
@ -246,6 +249,8 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
struct ieee80211_local *local = hw_to_local(hw);
bool was_hw_scan;
trace_api_scan_completed(local, aborted);
mutex_lock(&local->scan_mtx);
/*
@ -322,6 +327,7 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local)
ieee80211_offchannel_stop_beaconing(local);
local->leave_oper_channel_time = 0;
local->next_scan_state = SCAN_DECISION;
local->scan_channel_idx = 0;
@ -406,7 +412,7 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
if (local->ops->hw_scan) {
WARN_ON(!ieee80211_prep_hw_scan(local));
rc = drv_hw_scan(local, local->hw_scan_req);
rc = drv_hw_scan(local, sdata, local->hw_scan_req);
} else
rc = ieee80211_start_sw_scan(local);
@ -426,11 +432,28 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
return rc;
}
static unsigned long
ieee80211_scan_get_channel_time(struct ieee80211_channel *chan)
{
/*
* TODO: channel switching also consumes quite some time,
* add that delay as well to get a better estimation
*/
if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
return IEEE80211_PASSIVE_CHANNEL_TIME;
return IEEE80211_PROBE_DELAY + IEEE80211_CHANNEL_TIME;
}
static int ieee80211_scan_state_decision(struct ieee80211_local *local,
unsigned long *next_delay)
{
bool associated = false;
bool tx_empty = true;
bool bad_latency;
bool listen_int_exceeded;
unsigned long min_beacon_int = 0;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_channel *next_chan;
/* if no more bands/channels left, complete scan and advance to the idle state */
if (local->scan_channel_idx >= local->scan_req->n_channels) {
@ -438,7 +461,11 @@ static int ieee80211_scan_state_decision(struct ieee80211_local *local,
return 1;
}
/* check if at least one STA interface is associated */
/*
* check if at least one STA interface is associated,
* check if at least one STA interface has pending tx frames
* and grab the lowest used beacon interval
*/
mutex_lock(&local->iflist_mtx);
list_for_each_entry(sdata, &local->interfaces, list) {
if (!ieee80211_sdata_running(sdata))
@ -447,7 +474,16 @@ static int ieee80211_scan_state_decision(struct ieee80211_local *local,
if (sdata->vif.type == NL80211_IFTYPE_STATION) {
if (sdata->u.mgd.associated) {
associated = true;
break;
if (sdata->vif.bss_conf.beacon_int <
min_beacon_int || min_beacon_int == 0)
min_beacon_int =
sdata->vif.bss_conf.beacon_int;
if (!qdisc_all_tx_empty(sdata->dev)) {
tx_empty = false;
break;
}
}
}
}
@ -456,11 +492,34 @@ static int ieee80211_scan_state_decision(struct ieee80211_local *local,
if (local->scan_channel) {
/*
* we're currently scanning a different channel, let's
* switch back to the operating channel now if at least
* one interface is associated. Otherwise just scan the
* next channel
* see if we can scan another channel without interfering
* with the current traffic situation.
*
* Since we don't know if the AP has pending frames for us
* we can only check for our tx queues and use the current
* pm_qos requirements for rx. Hence, if no tx traffic occurs
* at all we will scan as many channels in a row as the pm_qos
* latency allows us to. Additionally we also check for the
* currently negotiated listen interval to prevent losing
* frames unnecessarily.
*
* Otherwise switch back to the operating channel.
*/
if (associated)
next_chan = local->scan_req->channels[local->scan_channel_idx];
bad_latency = time_after(jiffies +
ieee80211_scan_get_channel_time(next_chan),
local->leave_oper_channel_time +
usecs_to_jiffies(pm_qos_request(PM_QOS_NETWORK_LATENCY)));
listen_int_exceeded = time_after(jiffies +
ieee80211_scan_get_channel_time(next_chan),
local->leave_oper_channel_time +
usecs_to_jiffies(min_beacon_int * 1024) *
local->hw.conf.listen_interval);
if (associated && ( !tx_empty || bad_latency ||
listen_int_exceeded))
local->next_scan_state = SCAN_ENTER_OPER_CHANNEL;
else
local->next_scan_state = SCAN_SET_CHANNEL;
@ -492,6 +551,9 @@ static void ieee80211_scan_state_leave_oper_channel(struct ieee80211_local *loca
else
*next_delay = HZ / 10;
/* remember when we left the operating channel */
local->leave_oper_channel_time = jiffies;
/* advance to the next channel to be scanned */
local->next_scan_state = SCAN_SET_CHANNEL;
}
@ -594,7 +656,7 @@ void ieee80211_scan_work(struct work_struct *work)
}
if (local->hw_scan_req) {
int rc = drv_hw_scan(local, local->hw_scan_req);
int rc = drv_hw_scan(local, sdata, local->hw_scan_req);
mutex_unlock(&local->scan_mtx);
if (rc)
ieee80211_scan_completed(&local->hw, true);
@ -667,10 +729,12 @@ int ieee80211_request_scan(struct ieee80211_sub_if_data *sdata,
}
int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
const u8 *ssid, u8 ssid_len)
const u8 *ssid, u8 ssid_len,
struct ieee80211_channel *chan)
{
struct ieee80211_local *local = sdata->local;
int ret = -EBUSY;
enum nl80211_band band;
mutex_lock(&local->scan_mtx);
@ -678,6 +742,30 @@ int ieee80211_request_internal_scan(struct ieee80211_sub_if_data *sdata,
if (local->scan_req)
goto unlock;
/* fill internal scan request */
if (!chan) {
int i, nchan = 0;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (!local->hw.wiphy->bands[band])
continue;
for (i = 0;
i < local->hw.wiphy->bands[band]->n_channels;
i++) {
local->int_scan_req->channels[nchan] =
&local->hw.wiphy->bands[band]->channels[i];
nchan++;
}
}
local->int_scan_req->n_channels = nchan;
} else {
local->int_scan_req->channels[0] = chan;
local->int_scan_req->n_channels = 1;
}
local->int_scan_req->ssids = &local->scan_ssid;
local->int_scan_req->n_ssids = 1;
memcpy(local->int_scan_req->ssids[0].ssid, ssid, IEEE80211_MAX_SSID_LEN);
local->int_scan_req->ssids[0].ssid_len = ssid_len;

105
net/mac80211/sta_info.c
View file

@ -250,9 +250,6 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
* enable session_timer's data differentiation. refer to
* sta_rx_agg_session_timer_expired for useage */
sta->timer_to_tid[i] = i;
/* rx */
sta->ampdu_mlme.tid_state_rx[i] = HT_AGG_STATE_IDLE;
sta->ampdu_mlme.tid_rx[i] = NULL;
/* tx */
sta->ampdu_mlme.tid_state_tx[i] = HT_AGG_STATE_IDLE;
sta->ampdu_mlme.tid_tx[i] = NULL;
@ -578,7 +575,7 @@ static int sta_info_buffer_expired(struct sta_info *sta,
}
static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
struct sta_info *sta)
{
unsigned long flags;
@ -586,7 +583,7 @@ static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata;
if (skb_queue_empty(&sta->ps_tx_buf))
return;
return false;
for (;;) {
spin_lock_irqsave(&sta->ps_tx_buf.lock, flags);
@ -611,6 +608,8 @@ static void sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
if (skb_queue_empty(&sta->ps_tx_buf))
sta_info_clear_tim_bit(sta);
}
return true;
}
static int __must_check __sta_info_destroy(struct sta_info *sta)
@ -619,7 +618,7 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
struct ieee80211_sub_if_data *sdata;
struct sk_buff *skb;
unsigned long flags;
int ret, i;
int ret;
might_sleep();
@ -629,6 +628,15 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
local = sta->local;
sdata = sta->sdata;
/*
* Before removing the station from the driver and
* rate control, it might still start new aggregation
* sessions -- block that to make sure the tear-down
* will be sufficient.
*/
set_sta_flags(sta, WLAN_STA_BLOCK_BA);
ieee80211_sta_tear_down_BA_sessions(sta);
spin_lock_irqsave(&local->sta_lock, flags);
ret = sta_info_hash_del(local, sta);
/* this might still be the pending list ... which is fine */
@ -645,9 +653,6 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
* may mean it is removed from hardware which requires that
* the key->sta pointer is still valid, so flush the key todo
* list here.
*
* ieee80211_key_todo() will synchronize_rcu() so after this
* nothing can reference this sta struct any more.
*/
ieee80211_key_todo();
@ -679,11 +684,17 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
sdata = sta->sdata;
}
/*
* At this point, after we wait for an RCU grace period,
* neither mac80211 nor the driver can reference this
* sta struct any more except by still existing timers
* associated with this station that we clean up below.
*/
synchronize_rcu();
#ifdef CONFIG_MAC80211_MESH
if (ieee80211_vif_is_mesh(&sdata->vif)) {
if (ieee80211_vif_is_mesh(&sdata->vif))
mesh_accept_plinks_update(sdata);
del_timer(&sta->plink_timer);
}
#endif
#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
@ -710,50 +721,6 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL)
dev_kfree_skb_any(skb);
for (i = 0; i < STA_TID_NUM; i++) {
struct tid_ampdu_rx *tid_rx;
struct tid_ampdu_tx *tid_tx;
spin_lock_bh(&sta->lock);
tid_rx = sta->ampdu_mlme.tid_rx[i];
/* Make sure timer won't free the tid_rx struct, see below */
if (tid_rx)
tid_rx->shutdown = true;
spin_unlock_bh(&sta->lock);
/*
* Outside spinlock - shutdown is true now so that the timer
* won't free tid_rx, we have to do that now. Can't let the
* timer do it because we have to sync the timer outside the
* lock that it takes itself.
*/
if (tid_rx) {
del_timer_sync(&tid_rx->session_timer);
kfree(tid_rx);
}
/*
* No need to do such complications for TX agg sessions, the
* path leading to freeing the tid_tx struct goes via a call
* from the driver, and thus needs to look up the sta struct
* again, which cannot be found when we get here. Hence, we
* just need to delete the timer and free the aggregation
* info; we won't be telling the peer about it then but that
* doesn't matter if we're not talking to it again anyway.
*/
tid_tx = sta->ampdu_mlme.tid_tx[i];
if (tid_tx) {
del_timer_sync(&tid_tx->addba_resp_timer);
/*
* STA removed while aggregation session being
* started? Bit odd, but purge frames anyway.
*/
skb_queue_purge(&tid_tx->pending);
kfree(tid_tx);
}
}
__sta_info_free(local, sta);
return 0;
@ -790,15 +757,20 @@ static void sta_info_cleanup(unsigned long data)
{
struct ieee80211_local *local = (struct ieee80211_local *) data;
struct sta_info *sta;
bool timer_needed = false;
rcu_read_lock();
list_for_each_entry_rcu(sta, &local->sta_list, list)
sta_info_cleanup_expire_buffered(local, sta);
if (sta_info_cleanup_expire_buffered(local, sta))
timer_needed = true;
rcu_read_unlock();
if (local->quiescing)
return;
if (!timer_needed)
return;
local->sta_cleanup.expires =
round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL);
add_timer(&local->sta_cleanup);
@ -883,8 +855,12 @@ struct ieee80211_sta *ieee80211_find_sta_by_hw(struct ieee80211_hw *hw,
struct sta_info *sta, *nxt;
/* Just return a random station ... first in list ... */
for_each_sta_info(hw_to_local(hw), addr, sta, nxt)
for_each_sta_info(hw_to_local(hw), addr, sta, nxt) {
if (!sta->uploaded)
return NULL;
return &sta->sta;
}
return NULL;
}
EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_hw);
@ -892,14 +868,19 @@ EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_hw);
struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif,
const u8 *addr)
{
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta;
if (!vif)
return NULL;
sdata = vif_to_sdata(vif);
sta = sta_info_get_bss(vif_to_sdata(vif), addr);
if (!sta)
return NULL;
return ieee80211_find_sta_by_hw(&sdata->local->hw, addr);
if (!sta->uploaded)
return NULL;
return &sta->sta;
}
EXPORT_SYMBOL(ieee80211_find_sta);
@ -992,6 +973,8 @@ void ieee80211_sta_block_awake(struct ieee80211_hw *hw,
{
struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
trace_api_sta_block_awake(sta->local, pubsta, block);
if (block)
set_sta_flags(sta, WLAN_STA_PS_DRIVER);
else

12
net/mac80211/sta_info.h
View file

@ -35,8 +35,8 @@
* IEEE80211_TX_CTL_CLEAR_PS_FILT control flag) when the next
* frame to this station is transmitted.
* @WLAN_STA_MFP: Management frame protection is used with this STA.
* @WLAN_STA_SUSPEND: Set/cleared during a suspend/resume cycle.
* Used to deny ADDBA requests (both TX and RX).
* @WLAN_STA_BLOCK_BA: Used to deny ADDBA requests (both TX and RX)
* during suspend/resume and station removal.
* @WLAN_STA_PS_DRIVER: driver requires keeping this station in
* power-save mode logically to flush frames that might still
* be in the queues
@ -57,7 +57,7 @@ enum ieee80211_sta_info_flags {
WLAN_STA_WDS = 1<<7,
WLAN_STA_CLEAR_PS_FILT = 1<<9,
WLAN_STA_MFP = 1<<10,
WLAN_STA_SUSPEND = 1<<11,
WLAN_STA_BLOCK_BA = 1<<11,
WLAN_STA_PS_DRIVER = 1<<12,
WLAN_STA_PSPOLL = 1<<13,
WLAN_STA_DISASSOC = 1<<14,
@ -106,7 +106,6 @@ struct tid_ampdu_tx {
* @buf_size: buffer size for incoming A-MPDUs
* @timeout: reset timer value (in TUs).
* @dialog_token: dialog token for aggregation session
* @shutdown: this session is being shut down due to STA removal
*/
struct tid_ampdu_rx {
struct sk_buff **reorder_buf;
@ -118,7 +117,6 @@ struct tid_ampdu_rx {
u16 buf_size;
u16 timeout;
u8 dialog_token;
bool shutdown;
};
/**
@ -156,7 +154,7 @@ enum plink_state {
*/
struct sta_ampdu_mlme {
/* rx */
u8 tid_state_rx[STA_TID_NUM];
bool tid_active_rx[STA_TID_NUM];
struct tid_ampdu_rx *tid_rx[STA_TID_NUM];
/* tx */
u8 tid_state_tx[STA_TID_NUM];
@ -200,7 +198,6 @@ struct sta_ampdu_mlme {
* @rx_fragments: number of received MPDUs
* @rx_dropped: number of dropped MPDUs from this STA
* @last_signal: signal of last received frame from this STA
* @last_noise: noise of last received frame from this STA
* @last_seq_ctrl: last received seq/frag number from this STA (per RX queue)
* @tx_filtered_count: number of frames the hardware filtered for this STA
* @tx_retry_failed: number of frames that failed retry
@ -267,7 +264,6 @@ struct sta_info {
unsigned long rx_fragments;
unsigned long rx_dropped;
int last_signal;
int last_noise;
__le16 last_seq_ctrl[NUM_RX_DATA_QUEUES];
/* Updated from TX status path only, no locking requirements */

21
net/mac80211/status.c
View file

@ -171,13 +171,16 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
struct net_device *prev_dev = NULL;
struct sta_info *sta, *tmp;
int retry_count = -1, i;
bool injected;
int rates_idx = -1;
bool send_to_cooked;
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
/* the HW cannot have attempted that rate */
if (i >= hw->max_rates) {
info->status.rates[i].idx = -1;
info->status.rates[i].count = 0;
} else if (info->status.rates[i].idx >= 0) {
rates_idx = i;
}
retry_count += info->status.rates[i].count;
@ -206,6 +209,10 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
return;
}
if ((local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) &&
(rates_idx != -1))
sta->last_tx_rate = info->status.rates[rates_idx];
if ((info->flags & IEEE80211_TX_STAT_AMPDU_NO_BACK) &&
(ieee80211_is_data_qos(fc))) {
u16 tid, ssn;
@ -296,11 +303,15 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
/* this was a transmitted frame, but now we want to reuse it */
skb_orphan(skb);
/* Need to make a copy before skb->cb gets cleared */
send_to_cooked = !!(info->flags & IEEE80211_TX_CTL_INJECTED) ||
(type != IEEE80211_FTYPE_DATA);
/*
* This is a bit racy but we can avoid a lot of work
* with this test...
*/
if (!local->monitors && !local->cooked_mntrs) {
if (!local->monitors && (!send_to_cooked || !local->cooked_mntrs)) {
dev_kfree_skb(skb);
return;
}
@ -345,9 +356,6 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
/* for now report the total retry_count */
rthdr->data_retries = retry_count;
/* Need to make a copy before skb->cb gets cleared */
injected = !!(info->flags & IEEE80211_TX_CTL_INJECTED);
/* XXX: is this sufficient for BPF? */
skb_set_mac_header(skb, 0);
skb->ip_summed = CHECKSUM_UNNECESSARY;
@ -362,8 +370,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
continue;
if ((sdata->u.mntr_flags & MONITOR_FLAG_COOK_FRAMES) &&
!injected &&
(type == IEEE80211_FTYPE_DATA))
!send_to_cooked)
continue;
if (prev_dev) {

26
net/mac80211/tx.c
View file

@ -429,6 +429,7 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
struct sta_info *sta = tx->sta;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
struct ieee80211_local *local = tx->local;
u32 staflags;
if (unlikely(!sta ||
@ -476,6 +477,12 @@ ieee80211_tx_h_unicast_ps_buf(struct ieee80211_tx_data *tx)
info->control.vif = &tx->sdata->vif;
info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
skb_queue_tail(&sta->ps_tx_buf, tx->skb);
if (!timer_pending(&local->sta_cleanup))
mod_timer(&local->sta_cleanup,
round_jiffies(jiffies +
STA_INFO_CLEANUP_INTERVAL));
return TX_QUEUED;
}
#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
@ -513,6 +520,8 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
else if (tx->sta && (key = rcu_dereference(tx->sta->key)))
tx->key = key;
else if (ieee80211_is_mgmt(hdr->frame_control) &&
is_multicast_ether_addr(hdr->addr1) &&
ieee80211_is_robust_mgmt_frame(hdr) &&
(key = rcu_dereference(tx->sdata->default_mgmt_key)))
tx->key = key;
else if ((key = rcu_dereference(tx->sdata->default_key)))
@ -584,7 +593,8 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
struct ieee80211_hdr *hdr = (void *)tx->skb->data;
struct ieee80211_supported_band *sband;
struct ieee80211_rate *rate;
int i, len;
int i;
u32 len;
bool inval = false, rts = false, short_preamble = false;
struct ieee80211_tx_rate_control txrc;
u32 sta_flags;
@ -593,7 +603,7 @@ ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
sband = tx->local->hw.wiphy->bands[tx->channel->band];
len = min_t(int, tx->skb->len + FCS_LEN,
len = min_t(u32, tx->skb->len + FCS_LEN,
tx->local->hw.wiphy->frag_threshold);
/* set up the tx rate control struct we give the RC algo */
@ -1142,13 +1152,12 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
if (tx->sta && ieee80211_is_data_qos(hdr->frame_control) &&
(local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION)) {
unsigned long flags;
struct tid_ampdu_tx *tid_tx;
qc = ieee80211_get_qos_ctl(hdr);
tid = *qc & IEEE80211_QOS_CTL_TID_MASK;
spin_lock_irqsave(&tx->sta->lock, flags);
spin_lock(&tx->sta->lock);
/*
* XXX: This spinlock could be fairly expensive, but see the
* comment in agg-tx.c:ieee80211_agg_tx_operational().
@ -1173,7 +1182,7 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata,
info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
__skb_queue_tail(&tid_tx->pending, skb);
}
spin_unlock_irqrestore(&tx->sta->lock, flags);
spin_unlock(&tx->sta->lock);
if (unlikely(queued))
return TX_QUEUED;
@ -2011,14 +2020,12 @@ void ieee80211_tx_pending(unsigned long data)
while (!skb_queue_empty(&local->pending[i])) {
struct sk_buff *skb = __skb_dequeue(&local->pending[i]);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_sub_if_data *sdata;
if (WARN_ON(!info->control.vif)) {
kfree_skb(skb);
continue;
}
sdata = vif_to_sdata(info->control.vif);
spin_unlock_irqrestore(&local->queue_stop_reason_lock,
flags);
@ -2244,8 +2251,9 @@ struct sk_buff *ieee80211_beacon_get_tim(struct ieee80211_hw *hw,
info->control.vif = vif;
info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT |
IEEE80211_TX_CTL_ASSIGN_SEQ |
IEEE80211_TX_CTL_FIRST_FRAGMENT;
out:
rcu_read_unlock();
return skb;

36
net/mac80211/util.c
View file

@ -270,6 +270,8 @@ static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
trace_wake_queue(local, queue, reason);
if (WARN_ON(queue >= hw->queues))
return;
@ -312,6 +314,8 @@ static void __ieee80211_stop_queue(struct ieee80211_hw *hw, int queue,
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata;
trace_stop_queue(local, queue, reason);
if (WARN_ON(queue >= hw->queues))
return;
@ -796,6 +800,11 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
drv_conf_tx(local, queue, &qparam);
}
/* after reinitialize QoS TX queues setting to default,
* disable QoS at all */
local->hw.conf.flags &= ~IEEE80211_CONF_QOS;
drv_config(local, IEEE80211_CONF_CHANGE_QOS);
}
void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
@ -1135,7 +1144,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
list_for_each_entry_rcu(sta, &local->sta_list, list) {
clear_sta_flags(sta, WLAN_STA_SUSPEND);
clear_sta_flags(sta, WLAN_STA_BLOCK_BA);
}
}
@ -1151,18 +1160,33 @@ int ieee80211_reconfig(struct ieee80211_local *local)
/* Finally also reconfigure all the BSS information */
list_for_each_entry(sdata, &local->interfaces, list) {
u32 changed = ~0;
u32 changed;
if (!ieee80211_sdata_running(sdata))
continue;
/* common change flags for all interface types */
changed = BSS_CHANGED_ERP_CTS_PROT |
BSS_CHANGED_ERP_PREAMBLE |
BSS_CHANGED_ERP_SLOT |
BSS_CHANGED_HT |
BSS_CHANGED_BASIC_RATES |
BSS_CHANGED_BEACON_INT |
BSS_CHANGED_BSSID |
BSS_CHANGED_CQM;
switch (sdata->vif.type) {
case NL80211_IFTYPE_STATION:
/* disable beacon change bits */
changed &= ~(BSS_CHANGED_BEACON |
BSS_CHANGED_BEACON_ENABLED);
/* fall through */
changed |= BSS_CHANGED_ASSOC;
ieee80211_bss_info_change_notify(sdata, changed);
break;
case NL80211_IFTYPE_ADHOC:
changed |= BSS_CHANGED_IBSS;
/* fall through */
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_MESH_POINT:
changed |= BSS_CHANGED_BEACON |
BSS_CHANGED_BEACON_ENABLED;
ieee80211_bss_info_change_notify(sdata, changed);
break;
case NL80211_IFTYPE_WDS:

62
net/mac80211/work.c
View file

@ -33,6 +33,7 @@
#define IEEE80211_MAX_PROBE_TRIES 5
enum work_action {
WORK_ACT_MISMATCH,
WORK_ACT_NONE,
WORK_ACT_TIMEOUT,
WORK_ACT_DONE,
@ -213,15 +214,25 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata,
sband = local->hw.wiphy->bands[wk->chan->band];
/*
* Get all rates supported by the device and the AP as
* some APs don't like getting a superset of their rates
* in the association request (e.g. D-Link DAP 1353 in
* b-only mode)...
*/
rates_len = ieee80211_compatible_rates(wk->assoc.supp_rates,
wk->assoc.supp_rates_len,
sband, &rates);
if (wk->assoc.supp_rates_len) {
/*
* Get all rates supported by the device and the AP as
* some APs don't like getting a superset of their rates
* in the association request (e.g. D-Link DAP 1353 in
* b-only mode)...
*/
rates_len = ieee80211_compatible_rates(wk->assoc.supp_rates,
wk->assoc.supp_rates_len,
sband, &rates);
} else {
/*
* In case AP not provide any supported rates information
* before association, we send information element(s) with
* all rates that we support.
*/
rates = ~0;
rates_len = sband->n_bitrates;
}
skb = alloc_skb(local->hw.extra_tx_headroom +
sizeof(*mgmt) + /* bit too much but doesn't matter */
@ -575,7 +586,7 @@ ieee80211_rx_mgmt_auth(struct ieee80211_work *wk,
u16 auth_alg, auth_transaction, status_code;
if (wk->type != IEEE80211_WORK_AUTH)
return WORK_ACT_NONE;
return WORK_ACT_MISMATCH;
if (len < 24 + 6)
return WORK_ACT_NONE;
@ -626,6 +637,9 @@ ieee80211_rx_mgmt_assoc_resp(struct ieee80211_work *wk,
struct ieee802_11_elems elems;
u8 *pos;
if (wk->type != IEEE80211_WORK_ASSOC)
return WORK_ACT_MISMATCH;
/*
* AssocResp and ReassocResp have identical structure, so process both
* of them in this function.
@ -681,6 +695,12 @@ ieee80211_rx_mgmt_probe_resp(struct ieee80211_work *wk,
ASSERT_WORK_MTX(local);
if (wk->type != IEEE80211_WORK_DIRECT_PROBE)
return WORK_ACT_MISMATCH;
if (len < 24 + 12)
return WORK_ACT_NONE;
baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
if (baselen > len)
return WORK_ACT_NONE;
@ -695,7 +715,7 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
struct ieee80211_rx_status *rx_status;
struct ieee80211_mgmt *mgmt;
struct ieee80211_work *wk;
enum work_action rma = WORK_ACT_NONE;
enum work_action rma;
u16 fc;
rx_status = (struct ieee80211_rx_status *) skb->cb;
@ -742,7 +762,17 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
break;
default:
WARN_ON(1);
rma = WORK_ACT_NONE;
}
/*
* We've either received an unexpected frame, or we have
* multiple work items and need to match the frame to the
* right one.
*/
if (rma == WORK_ACT_MISMATCH)
continue;
/*
* We've processed this frame for that work, so it can't
* belong to another work struct.
@ -752,6 +782,9 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
}
switch (rma) {
case WORK_ACT_MISMATCH:
/* ignore this unmatched frame */
break;
case WORK_ACT_NONE:
break;
case WORK_ACT_DONE:
@ -920,11 +953,16 @@ static void ieee80211_work_work(struct work_struct *work)
run_again(local, jiffies + HZ/2);
}
if (list_empty(&local->work_list) && local->scan_req)
mutex_lock(&local->scan_mtx);
if (list_empty(&local->work_list) && local->scan_req &&
!local->scanning)
ieee80211_queue_delayed_work(&local->hw,
&local->scan_work,
round_jiffies_relative(0));
mutex_unlock(&local->scan_mtx);
mutex_unlock(&local->work_mtx);
ieee80211_recalc_idle(local);