package/kernel/mac80211/patches/subsys/300-mac80211-fix-rate-control-for-retransmitted-frames.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Mon, 22 Nov 2021 21:39:38 +0100
   3 Subject: [PATCH] mac80211: fix rate control for retransmitted frames
   4
   5 Since retransmission clears info->control, rate control needs to be called
   6 again, otherwise the driver might crash due to invalid rates.
   7
   8 Cc: stable@vger.kernel.org # 5.14+
   9 Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
  10 Reported-by: Robert W <rwbugreport@lost-in-the-void.net>
  11 Fixes: 03c3911d2d67 ("mac80211: call ieee80211_tx_h_rate_ctrl() when dequeue")
  12 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  13 ---
  14
  15 --- a/net/mac80211/tx.c
  16 +++ b/net/mac80211/tx.c
  17 @@ -1821,15 +1821,15 @@ static int invoke_tx_handlers_late(struc
  18         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
  19         ieee80211_tx_result res = TX_CONTINUE;
  20
  21 +       if (!ieee80211_hw_check(&tx->local->hw, HAS_RATE_CONTROL))
  22 +               CALL_TXH(ieee80211_tx_h_rate_ctrl);
  23 +
  24         if (unlikely(info->flags & IEEE80211_TX_INTFL_RETRANSMISSION)) {
  25                 __skb_queue_tail(&tx->skbs, tx->skb);
  26                 tx->skb = NULL;
  27                 goto txh_done;
  28         }
  29
  30 -       if (!ieee80211_hw_check(&tx->local->hw, HAS_RATE_CONTROL))
  31 -               CALL_TXH(ieee80211_tx_h_rate_ctrl);
  32 -
  33         CALL_TXH(ieee80211_tx_h_michael_mic_add);
  34         CALL_TXH(ieee80211_tx_h_sequence);
  35         CALL_TXH(ieee80211_tx_h_fragment);