Re: [PATCH] 802.11n IBSS: wlan0 stops receiving packets due to aggregation after sender reboot
From: Sergei Shtylyov <hidden>
Date: 2019-10-22 09:42:25
Also in:
linux-wireless, lkml
Hello! On 21.10.2019 15:18, Krzysztof Hałasa wrote:
quoted hunk ↗ jump to hunk
Fix a bug where the mac80211 RX aggregation code sets a new aggregation "session" at the remote station's request, but the head_seq_num (the sequence number the receiver expects to receive) isn't reset. Spotted on a pair of AR9580 in IBSS mode. Signed-off-by: Krzysztof Halasa <khalasa@piap.pl>diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c index 4d1c335e06e5..775a51cc51c9 100644 --- a/net/mac80211/agg-rx.c +++ b/net/mac80211/agg-rx.c@@ -354,9 +354,11 @@ void ___ieee80211_start_rx_ba_session(struct sta_info *sta, */ rcu_read_lock(); tid_rx = rcu_dereference(sta->ampdu_mlme.tid_rx[tid]); - if (tid_rx && tid_rx->timeout == timeout) + if (tid_rx && tid_rx->timeout == timeout) { + tid_rx->ssn = start_seq_num; + tid_rx->head_seq_num = start_seq_num; status = WLAN_STATUS_SUCCESS; - else + } else
If you add {} on one branch of *if*, you also need to add {} to all other
branches, says CodingStyle...
[...]
MBR, Sergei