diff options
| author | Christian Lamparter <chunkeey@googlemail.com> | 2010-12-30 17:25:29 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-01-04 14:46:13 -0500 |
| commit | 24a8fdad35835e8d71f7c4b978a246fafed2e7b4 (patch) | |
| tree | 3ee2b5710b802dca6fe43cbedf461c54e0f2be93 /net/mac80211/ieee80211_i.h | |
| parent | 1186488b4a4d4871e40cb1604ba3ede3d4b7cc90 (diff) | |
mac80211: serialize rx path workers
This patch addresses the issue of serialization between
the main rx path and various reorder release timers.
<http://www.spinics.net/lists/linux-wireless/msg57214.html>
It converts the previously local "frames" queue into
a global rx queue [rx_skb_queue]. This way, everyone
(be it the main rx-path or some reorder release timeout)
can add frames to it.
Only one active rx handler worker [ieee80211_rx_handlers]
is needed. All other threads which have lost the race of
"runnning_rx_handler" can now simply "return", knowing that
the thread who had the "edge" will also take care of their
workload.
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/ieee80211_i.h')
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index a9eb67380da..1bf2fc8b9bd 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -761,6 +761,15 @@ struct ieee80211_local { struct sk_buff_head skb_queue; struct sk_buff_head skb_queue_unreliable; + /* + * Internal FIFO queue which is shared between multiple rx path + * stages. Its main task is to provide a serialization mechanism, + * so all rx handlers can enjoy having exclusive access to their + * private data structures. + */ + struct sk_buff_head rx_skb_queue; + bool running_rx_handler; /* protected by rx_skb_queue.lock */ + /* Station data */ /* * The mutex only protects the list and counter, |