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mac80211: explicitly notify drivers of frame release

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iwlwifi needs to know the number of frames that are
going to be sent to a station while it is asleep so
it can properly handle the uCode blocking of that
station.

Before uAPSD, we got by by telling the device that
a single frame was going to be released whenever we
encountered IEEE80211_TX_CTL_POLL_RESPONSE. With
uAPSD, however, that is no longer possible since
there could be more than a single frame.

To support this model, add a new callback to notify
drivers when frames are going to be released.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2011-09-29 16:04:38 +02:00 • committed by John W. Linville
parent 5bade101ec
commit 40b9640883
4 changed files with 78 additions and 10 deletions
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22
net/mac80211/driver-trace.h
View file

@ -1129,7 +1129,7 @@ TRACE_EVENT(drv_rssi_callback,
)
);
TRACE_EVENT(drv_release_buffered_frames,
DECLARE_EVENT_CLASS(release_evt,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sta *sta,
u16 tids, int num_frames,
@ -1164,6 +1164,26 @@ TRACE_EVENT(drv_release_buffered_frames,
)
);
DEFINE_EVENT(release_evt, drv_release_buffered_frames,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sta *sta,
u16 tids, int num_frames,
enum ieee80211_frame_release_type reason,
bool more_data),
TP_ARGS(local, sta, tids, num_frames, reason, more_data)
);
DEFINE_EVENT(release_evt, drv_allow_buffered_frames,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sta *sta,
u16 tids, int num_frames,
enum ieee80211_frame_release_type reason,
bool more_data),
TP_ARGS(local, sta, tids, num_frames, reason, more_data)
);
/*
* Tracing for API calls that drivers call.
*/