From: Felix Fietkau <nbd@xxxxxxxx>
commit 73111efacd3c6d9e644acca1d132566932be8af0 upstream.
Some drivers that do their own sequence number allocation (e.g. ath9k) rely
on being able to modify params->ssn on starting tx ampdu sessions.
This was broken by a change that modified it to use sta->tid_seq[tid] instead.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 31d8bb4e07f8 ("mac80211: agg-tx: refactor sending addba")
Reported-by: Eneas U de Queiroz <cotequeiroz@xxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Link: https://lore.kernel.org/r/20211124094024.43222-1-nbd@xxxxxxxx
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/mac80211/agg-tx.c | 4 ++--
net/mac80211/sta_info.h | 1 +
2 files changed, 3 insertions(+), 2 deletions(-)
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -481,8 +481,7 @@ static void ieee80211_send_addba_with_ti
/* send AddBA request */
ieee80211_send_addba_request(sdata, sta->sta.addr, tid,
- tid_tx->dialog_token,
- sta->tid_seq[tid] >> 4,
+ tid_tx->dialog_token, tid_tx->ssn,
buf_size, tid_tx->timeout);
}
@@ -522,6 +521,7 @@ void ieee80211_tx_ba_session_handle_star
params.ssn = sta->tid_seq[tid] >> 4;
ret = drv_ampdu_action(local, sdata, ¶ms);
+ tid_tx->ssn = params.ssn;
if (ret) {
ht_dbg(sdata,
"BA request denied - HW unavailable for %pM tid %d\n",
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -180,6 +180,7 @@ struct tid_ampdu_tx {
u8 stop_initiator;
bool tx_stop;
u16 buf_size;
+ u16 ssn;
u16 failed_bar_ssn;
bool bar_pending;
