diff options
| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2012-12-20 14:41:18 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2013-01-16 15:06:18 +0100 |
| commit | aacde9ee45225f7e0b90960f479aef83c66bfdc0 (patch) | |
| tree | 50a7b363fde4cbc30aa0ba22bef4bbe27701c4ea /net/mac80211/offchannel.c | |
| parent | 1626e0fa740dec8665a973cf2349405cdfeb46dc (diff) | |
mac80211: synchronize scan off/on-channel and PS states
Since:
commit b23b025fe246f3acc2988eb6d400df34c27cb8ae
Author: Ben Greear <greearb@candelatech.com>
Date: Fri Feb 4 11:54:17 2011 -0800
mac80211: Optimize scans on current operating channel.
we do not disable PS while going back to operational channel (on
ieee80211_scan_state_suspend) and deffer that until scan finish.
But since we are allowed to send frames, we can send a frame to AP
without PM bit set, so disable PS on AP side. Then when we switch
to off-channel (in ieee80211_scan_state_resume) we do not enable PS.
Hence we are off-channel with PS disabled, frames are not buffered
by AP.
To fix remove offchannel_ps_disable argument and always enable PS when
going off-channel and disable it when going on-channel, like it was
before.
Cc: stable@vger.kernel.org # 2.6.39+
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Tested-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/offchannel.c')
| -rw-r--r-- | net/mac80211/offchannel.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c index a5379aea7d0..a3ad4c3c80a 100644 --- a/net/mac80211/offchannel.c +++ b/net/mac80211/offchannel.c @@ -102,8 +102,7 @@ static void ieee80211_offchannel_ps_disable(struct ieee80211_sub_if_data *sdata) ieee80211_sta_reset_conn_monitor(sdata); } -void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, - bool offchannel_ps_enable) +void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local) { struct ieee80211_sub_if_data *sdata; @@ -134,8 +133,7 @@ void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, if (sdata->vif.type != NL80211_IFTYPE_MONITOR) { netif_tx_stop_all_queues(sdata->dev); - if (offchannel_ps_enable && - (sdata->vif.type == NL80211_IFTYPE_STATION) && + if (sdata->vif.type == NL80211_IFTYPE_STATION && sdata->u.mgd.associated) ieee80211_offchannel_ps_enable(sdata); } @@ -143,8 +141,7 @@ void ieee80211_offchannel_stop_vifs(struct ieee80211_local *local, mutex_unlock(&local->iflist_mtx); } -void ieee80211_offchannel_return(struct ieee80211_local *local, - bool offchannel_ps_disable) +void ieee80211_offchannel_return(struct ieee80211_local *local) { struct ieee80211_sub_if_data *sdata; @@ -163,11 +160,9 @@ void ieee80211_offchannel_return(struct ieee80211_local *local, continue; /* Tell AP we're back */ - if (offchannel_ps_disable && - sdata->vif.type == NL80211_IFTYPE_STATION) { - if (sdata->u.mgd.associated) - ieee80211_offchannel_ps_disable(sdata); - } + if (sdata->vif.type == NL80211_IFTYPE_STATION && + sdata->u.mgd.associated) + ieee80211_offchannel_ps_disable(sdata); if (sdata->vif.type != NL80211_IFTYPE_MONITOR) { /* @@ -385,7 +380,7 @@ void ieee80211_sw_roc_work(struct work_struct *work) local->tmp_channel = NULL; ieee80211_hw_config(local, 0); - ieee80211_offchannel_return(local, true); + ieee80211_offchannel_return(local); } ieee80211_recalc_idle(local); |