diff options
author | Johannes Berg <johannes.berg@intel.com> | 2010-12-18 17:20:47 +0100 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2011-01-05 16:07:12 -0500 |
commit | 21f83589644bb2ed98079bf1e2154c8e70ca6a6c (patch) | |
tree | ede391a8c788a43f7c4ea3baa3367e020d45f179 /net/mac80211/offchannel.c | |
parent | c96e96354a6c9456cdf1f150eca504e2ea35301e (diff) | |
download | linux-stable-21f83589644bb2ed98079bf1e2154c8e70ca6a6c.tar.gz linux-stable-21f83589644bb2ed98079bf1e2154c8e70ca6a6c.tar.bz2 linux-stable-21f83589644bb2ed98079bf1e2154c8e70ca6a6c.zip |
mac80211: implement hardware offload for remain-on-channel
This allows drivers to support remain-on-channel
offload if they implement smarter timing or need
to use a device implementation like iwlwifi.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/offchannel.c')
-rw-r--r-- | net/mac80211/offchannel.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c index 4b564091e51d..49b9ec22d9b6 100644 --- a/net/mac80211/offchannel.c +++ b/net/mac80211/offchannel.c @@ -14,6 +14,7 @@ */ #include <net/mac80211.h> #include "ieee80211_i.h" +#include "driver-trace.h" /* * inform AP that we will go to sleep so that it will buffer the frames @@ -190,3 +191,77 @@ void ieee80211_offchannel_return(struct ieee80211_local *local, } mutex_unlock(&local->iflist_mtx); } + +static void ieee80211_hw_roc_start(struct work_struct *work) +{ + struct ieee80211_local *local = + container_of(work, struct ieee80211_local, hw_roc_start); + + mutex_lock(&local->mtx); + + if (!local->hw_roc_channel) { + mutex_unlock(&local->mtx); + return; + } + + ieee80211_recalc_idle(local); + + cfg80211_ready_on_channel(local->hw_roc_dev, local->hw_roc_cookie, + local->hw_roc_channel, + local->hw_roc_channel_type, + local->hw_roc_duration, + GFP_KERNEL); + mutex_unlock(&local->mtx); +} + +void ieee80211_ready_on_channel(struct ieee80211_hw *hw) +{ + struct ieee80211_local *local = hw_to_local(hw); + + trace_api_ready_on_channel(local); + + ieee80211_queue_work(hw, &local->hw_roc_start); +} +EXPORT_SYMBOL_GPL(ieee80211_ready_on_channel); + +static void ieee80211_hw_roc_done(struct work_struct *work) +{ + struct ieee80211_local *local = + container_of(work, struct ieee80211_local, hw_roc_done); + + mutex_lock(&local->mtx); + + if (!local->hw_roc_channel) { + mutex_unlock(&local->mtx); + return; + } + + cfg80211_remain_on_channel_expired(local->hw_roc_dev, + local->hw_roc_cookie, + local->hw_roc_channel, + local->hw_roc_channel_type, + GFP_KERNEL); + + local->hw_roc_channel = NULL; + local->hw_roc_cookie = 0; + + ieee80211_recalc_idle(local); + + mutex_unlock(&local->mtx); +} + +void ieee80211_remain_on_channel_expired(struct ieee80211_hw *hw) +{ + struct ieee80211_local *local = hw_to_local(hw); + + trace_api_remain_on_channel_expired(local); + + ieee80211_queue_work(hw, &local->hw_roc_done); +} +EXPORT_SYMBOL_GPL(ieee80211_remain_on_channel_expired); + +void ieee80211_hw_roc_setup(struct ieee80211_local *local) +{ + INIT_WORK(&local->hw_roc_start, ieee80211_hw_roc_start); + INIT_WORK(&local->hw_roc_done, ieee80211_hw_roc_done); +} |