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cfg80211/mac80211: DFS setup chandef for cac event 

To report channel width correctly we have
to send correct channel parameters from
mac80211 when calling cfg80211_cac_event().

This is required in case of using channel width
higher than 20MHz and we have to set correct
dfs channel state after CAC (NL80211_DFS_AVAILABLE).

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Reviewed-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Janusz Dziedzic 2013-11-06 13:55:51 +01:00 committed by Johannes Berg
parent 5282c3ba4c
commit d2859df5e7
8 changed files with 23 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/net/cfg80211.h
View File

@ -4150,6 +4150,7 @@ void cfg80211_radar_event(struct wiphy *wiphy,
/**
* cfg80211_cac_event - Channel availability check (CAC) event
* @netdev: network device
* @chandef: chandef for the current channel
* @event: type of event
* @gfp: context flags
*
@ -4158,6 +4159,7 @@ void cfg80211_radar_event(struct wiphy *wiphy,
* also by full-MAC drivers.
*/
void cfg80211_cac_event(struct net_device *netdev,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event, gfp_t gfp);

5
net/mac80211/cfg.c
View File

@ -1050,6 +1050,7 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
struct ieee80211_local *local = sdata->local;
struct beacon_data *old_beacon;
struct probe_resp *old_probe_resp;
struct cfg80211_chan_def chandef;
old_beacon = rtnl_dereference(sdata->u.ap.beacon);
if (!old_beacon)
@ -1091,8 +1092,10 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
if (sdata->wdev.cac_started) {
chandef = sdata->vif.bss_conf.chandef;
cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED,
cfg80211_cac_event(sdata->dev, &chandef,
NL80211_RADAR_CAC_ABORTED,
GFP_KERNEL);
}

5
net/mac80211/iface.c
View File

@ -749,6 +749,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
u32 hw_reconf_flags = 0;
int i, flushed;
struct ps_data *ps;
struct cfg80211_chan_def chandef;
clear_bit(SDATA_STATE_RUNNING, &sdata->state);
@ -823,11 +824,13 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
if (sdata->wdev.cac_started) {
chandef = sdata->vif.bss_conf.chandef;
WARN_ON(local->suspended);
mutex_lock(&local->iflist_mtx);
ieee80211_vif_release_channel(sdata);
mutex_unlock(&local->iflist_mtx);
cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_ABORTED,
cfg80211_cac_event(sdata->dev, &chandef,
NL80211_RADAR_CAC_ABORTED,
GFP_KERNEL);
}

6
net/mac80211/mlme.c
View File

@ -1398,10 +1398,12 @@ void ieee80211_dfs_cac_timer_work(struct work_struct *work)
struct ieee80211_sub_if_data *sdata =
container_of(delayed_work, struct ieee80211_sub_if_data,
dfs_cac_timer_work);
struct cfg80211_chan_def chandef = sdata->vif.bss_conf.chandef;
ieee80211_vif_release_channel(sdata);
cfg80211_cac_event(sdata->dev, NL80211_RADAR_CAC_FINISHED, GFP_KERNEL);
cfg80211_cac_event(sdata->dev, &chandef,
NL80211_RADAR_CAC_FINISHED,
GFP_KERNEL);
}
/* MLME */

3
net/mac80211/util.c
View File

@ -2259,14 +2259,17 @@ u64 ieee80211_calculate_rx_timestamp(struct ieee80211_local *local,
void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
{
struct ieee80211_sub_if_data *sdata;
struct cfg80211_chan_def chandef;
mutex_lock(&local->iflist_mtx);
list_for_each_entry(sdata, &local->interfaces, list) {
cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
if (sdata->wdev.cac_started) {
chandef = sdata->vif.bss_conf.chandef;
ieee80211_vif_release_channel(sdata);
cfg80211_cac_event(sdata->dev,
&chandef,
NL80211_RADAR_CAC_ABORTED,
GFP_KERNEL);
}

8
net/wireless/mlme.c
View File

@ -763,12 +763,12 @@ void cfg80211_radar_event(struct wiphy *wiphy,
EXPORT_SYMBOL(cfg80211_radar_event);
void cfg80211_cac_event(struct net_device *netdev,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event, gfp_t gfp)
{
struct wireless_dev *wdev = netdev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
struct cfg80211_chan_def chandef;
unsigned long timeout;
trace_cfg80211_cac_event(netdev, event);
@ -779,14 +779,12 @@ void cfg80211_cac_event(struct net_device *netdev,
if (WARN_ON(!wdev->channel))
return;
cfg80211_chandef_create(&chandef, wdev->channel, NL80211_CHAN_NO_HT);
switch (event) {
case NL80211_RADAR_CAC_FINISHED:
timeout = wdev->cac_start_time +
msecs_to_jiffies(IEEE80211_DFS_MIN_CAC_TIME_MS);
WARN_ON(!time_after_eq(jiffies, timeout));
cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_AVAILABLE);
cfg80211_set_dfs_state(wiphy, chandef, NL80211_DFS_AVAILABLE);
break;
case NL80211_RADAR_CAC_ABORTED:
break;
@ -796,6 +794,6 @@ void cfg80211_cac_event(struct net_device *netdev,
}
wdev->cac_started = false;
nl80211_radar_notify(rdev, &chandef, event, netdev, gfp);
nl80211_radar_notify(rdev, chandef, event, netdev, gfp);
}
EXPORT_SYMBOL(cfg80211_cac_event);

4
net/wireless/nl80211.c
View File

@ -2168,7 +2168,7 @@ static inline u64 wdev_id(struct wireless_dev *wdev)
}
static int nl80211_send_chandef(struct sk_buff *msg,
struct cfg80211_chan_def *chandef)
const struct cfg80211_chan_def *chandef)
{
WARN_ON(!cfg80211_chandef_valid(chandef));
@ -10874,7 +10874,7 @@ EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
void
nl80211_radar_notify(struct cfg80211_registered_device *rdev,
struct cfg80211_chan_def *chandef,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event,
struct net_device *netdev, gfp_t gfp)
{

2
net/wireless/nl80211.h
View File

@ -70,7 +70,7 @@ int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
void
nl80211_radar_notify(struct cfg80211_registered_device *rdev,
struct cfg80211_chan_def *chandef,
const struct cfg80211_chan_def *chandef,
enum nl80211_radar_event event,
struct net_device *netdev, gfp_t gfp);