package/kernel/mac80211/patches/334-mac80211-fix-tx-sequence-number-assignment-with-soft.patch

   1 From: Felix Fietkau <nbd@openwrt.org>
   2 Date: Thu, 24 Sep 2015 14:10:07 +0200
   3 Subject: [PATCH] mac80211: fix tx sequence number assignment with software
   4  queue + fast-xmit
   5
   6 When using software queueing, tx sequence number assignment happens at
   7 ieee80211_tx_dequeue time, so the fast-xmit codepath must not do that.
   8
   9 Signed-off-by: Felix Fietkau <nbd@openwrt.org>
  10 ---
  11
  12 --- a/net/mac80211/tx.c
  13 +++ b/net/mac80211/tx.c
  14 @@ -2766,7 +2766,8 @@ static bool ieee80211_xmit_fast(struct i
  15
  16         if (hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) {
  17                 *ieee80211_get_qos_ctl(hdr) = tid;
  18 -               hdr->seq_ctrl = ieee80211_tx_next_seq(sta, tid);
  19 +               if (!sta->sta.txq[0])
  20 +                       hdr->seq_ctrl = ieee80211_tx_next_seq(sta, tid);
  21         } else {
  22                 info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
  23                 hdr->seq_ctrl = cpu_to_le16(sdata->sequence_number);