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authorFelix Fietkau <nbd@openwrt.org>2011-08-28 23:11:01 +0400
committerJohn W. Linville <linville@tuxdriver.com>2011-09-13 23:42:30 +0400
commitf0425beda4d404a6e751439b562100b902ba9c98 (patch)
tree5a8966c3172557e80fa0a4903ade8a76e5d21415 /net/mac80211/sta_info.h
parent765b07e46725287ceb1be648b6cb5988fbb585f2 (diff)
downloadlinux-f0425beda4d404a6e751439b562100b902ba9c98.tar.xz
mac80211: retry sending failed BAR frames later instead of tearing down aggr
Unfortunately failed BAR tx attempts happen more frequently than I expected, and the resulting aggregation teardowns cause performance issues, as the aggregation session does not always get re-established properly. Instead of tearing down the entire aggr session, we can simply store the SSN of the last failed BAR tx attempt, wait for the first successful tx status event, and then send another BAR with the same SSN. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Cc: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/sta_info.h')
-rw-r--r--net/mac80211/sta_info.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index e9eb565506da..56a3d38a2cd1 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -86,6 +86,8 @@ enum ieee80211_sta_info_flags {
* @stop_initiator: initiator of a session stop
* @tx_stop: TX DelBA frame when stopping
* @buf_size: reorder buffer size at receiver
+ * @failed_bar_ssn: ssn of the last failed BAR tx attempt
+ * @bar_pending: BAR needs to be re-sent
*
* This structure's lifetime is managed by RCU, assignments to
* the array holding it must hold the aggregation mutex.
@@ -106,6 +108,9 @@ struct tid_ampdu_tx {
u8 stop_initiator;
bool tx_stop;
u8 buf_size;
+
+ u16 failed_bar_ssn;
+ bool bar_pending;
};
/**