package/kernel/mac80211/patches/subsys/302-mac80211-fix-regression-in-SSN-handling-of-addba-tx.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Wed, 24 Nov 2021 10:30:41 +0100
   3 Subject: [PATCH] mac80211: fix regression in SSN handling of addba tx
   4
   5 Some drivers that do their own sequence number allocation (e.g. ath9k) rely
   6 on being able to modify params->ssn on starting tx ampdu sessions.
   7 This was broken by a change that modified it to use sta->tid_seq[tid] instead.
   8
   9 Cc: stable@vger.kernel.org
  10 Fixes: 31d8bb4e07f8 ("mac80211: agg-tx: refactor sending addba")
  11 Reported-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
  12 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  13 ---
  14
  15 --- a/net/mac80211/agg-tx.c
  16 +++ b/net/mac80211/agg-tx.c
  17 @@ -480,8 +480,7 @@ static void ieee80211_send_addba_with_ti
  18
  19         /* send AddBA request */
  20         ieee80211_send_addba_request(sdata, sta->sta.addr, tid,
  21 -                                    tid_tx->dialog_token,
  22 -                                    sta->tid_seq[tid] >> 4,
  23 +                                    tid_tx->dialog_token, tid_tx->ssn,
  24                                      buf_size, tid_tx->timeout);
  25
  26         WARN_ON(test_and_set_bit(HT_AGG_STATE_SENT_ADDBA, &tid_tx->state));
  27 @@ -523,6 +522,7 @@ void ieee80211_tx_ba_session_handle_star
  28
  29         params.ssn = sta->tid_seq[tid] >> 4;
  30         ret = drv_ampdu_action(local, sdata, &params);
  31 +       tid_tx->ssn = params.ssn;
  32         if (ret == IEEE80211_AMPDU_TX_START_DELAY_ADDBA) {
  33                 return;
  34         } else if (ret == IEEE80211_AMPDU_TX_START_IMMEDIATE) {
  35 --- a/net/mac80211/sta_info.h
  36 +++ b/net/mac80211/sta_info.h
  37 @@ -199,6 +199,7 @@ struct tid_ampdu_tx {
  38         u8 stop_initiator;
  39         bool tx_stop;
  40         u16 buf_size;
  41 +       u16 ssn;
  42
  43         u16 failed_bar_ssn;
  44         bool bar_pending;