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authorIlan Peer <ilan.peer@intel.com>2018-02-19 14:48:44 +0200
committerJohannes Berg <johannes.berg@intel.com>2018-02-27 11:06:04 +0100
commit21b7022f13fb038b3e204a892c7cc42749754f7f (patch)
tree4d4497d4334c78b91fd5e9781d55fe3b76732e7f /net/mac80211
parent9251a4736ee360d3850644ddaaa1a61dcec96238 (diff)
downloadlinux-21b7022f13fb038b3e204a892c7cc42749754f7f.tar.bz2
mac80211: agg-rx: Accept ADDBA request update if timeout did not change
As there is no support for updating an existing ADDBA session with a peer, we decline the request (while keeping the session active). However, in case that the timeout did not change, there is no need to decline the request, so modify the code to reply with status success in such a case (this is useful for interoperability with APs that send an ADDBA request update without changing the timeout value). Signed-off-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/agg-rx.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index 1f3188d03840..e83c19d4c292 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -298,13 +298,23 @@ void ___ieee80211_start_rx_ba_session(struct sta_info *sta,
if (test_bit(tid, sta->ampdu_mlme.agg_session_valid)) {
if (sta->ampdu_mlme.tid_rx_token[tid] == dialog_token) {
+ struct tid_ampdu_rx *tid_rx;
+
ht_dbg_ratelimited(sta->sdata,
"updated AddBA Req from %pM on tid %u\n",
sta->sta.addr, tid);
/* We have no API to update the timeout value in the
- * driver so reject the timeout update.
+ * driver so reject the timeout update if the timeout
+ * changed. If if did not change, i.e., no real update,
+ * just reply with success.
*/
- status = WLAN_STATUS_REQUEST_DECLINED;
+ rcu_read_lock();
+ tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[tid]);
+ if (tid_rx && tid_rx->timeout == timeout)
+ status = WLAN_STATUS_SUCCESS;
+ else
+ status = WLAN_STATUS_REQUEST_DECLINED;
+ rcu_read_unlock();
goto end;
}