mac80211: fix a few issues with fast-xmit support

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@47041 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/kernel/mac80211/patches/334-mac80211-fix-tx-sequence-number-assignment-with-soft.patch b/package/kernel/mac80211/patches/334-mac80211-fix-tx-sequence-number-assignment-with-soft.patch
new file mode 100644 (file)
index 0000000..b19e7ee
--- /dev/null
+++ b/package/kernel/mac80211/patches/334-mac80211-fix-tx-sequence-number-assignment-with-soft.patch
@@ -0,0 +1,23 @@
+From: Felix Fietkau <nbd@openwrt.org>
+Date: Thu, 24 Sep 2015 14:10:07 +0200
+Subject: [PATCH] mac80211: fix tx sequence number assignment with software
+ queue + fast-xmit
+
+When using software queueing, tx sequence number assignment happens at
+ieee80211_tx_dequeue time, so the fast-xmit codepath must not do that.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+---
+
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -2766,7 +2766,8 @@ static bool ieee80211_xmit_fast(struct i
+ 
+       if (hdr->frame_control & cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) {
+               *ieee80211_get_qos_ctl(hdr) = tid;
+-              hdr->seq_ctrl = ieee80211_tx_next_seq(sta, tid);
++              if (!sta->sta.txq[0])
++                      hdr->seq_ctrl = ieee80211_tx_next_seq(sta, tid);
+       } else {
+               info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
+               hdr->seq_ctrl = cpu_to_le16(sdata->sequence_number);

diff --git a/package/kernel/mac80211/patches/335-mac80211-fix-handling-of-PS-filtering-with-fast-xmit.patch b/package/kernel/mac80211/patches/335-mac80211-fix-handling-of-PS-filtering-with-fast-xmit.patch
new file mode 100644 (file)
index 0000000..7aef205
--- /dev/null
+++ b/package/kernel/mac80211/patches/335-mac80211-fix-handling-of-PS-filtering-with-fast-xmit.patch
@@ -0,0 +1,45 @@
+From: Felix Fietkau <nbd@openwrt.org>
+Date: Thu, 24 Sep 2015 14:11:40 +0200
+Subject: [PATCH] mac80211: fix handling of PS filtering with fast-xmit
+
+Fixes dropped packets in the tx path in case a non-PS station triggers
+the tx filter.
+
+Cc: stable@vger.kernel.org # 4.2
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+---
+
+--- a/net/mac80211/status.c
++++ b/net/mac80211/status.c
+@@ -101,6 +101,7 @@ static void ieee80211_handle_filtered_fr
+        * when it wakes up for the next time.
+        */
+       set_sta_flag(sta, WLAN_STA_CLEAR_PS_FILT);
++      ieee80211_clear_fast_xmit(sta);
+ 
+       /*
+        * This code races in the following way:
+--- a/net/mac80211/tx.c
++++ b/net/mac80211/tx.c
+@@ -1217,8 +1217,10 @@ ieee80211_tx_prepare(struct ieee80211_su
+ 
+       if (!tx->sta)
+               info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
+-      else if (test_and_clear_sta_flag(tx->sta, WLAN_STA_CLEAR_PS_FILT))
++      else if (test_and_clear_sta_flag(tx->sta, WLAN_STA_CLEAR_PS_FILT)) {
+               info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
++              ieee80211_check_fast_xmit(tx->sta);
++      }
+ 
+       info->flags |= IEEE80211_TX_CTL_FIRST_FRAGMENT;
+ 
+@@ -2450,7 +2452,8 @@ void ieee80211_check_fast_xmit(struct st
+ 
+       if (test_sta_flag(sta, WLAN_STA_PS_STA) ||
+           test_sta_flag(sta, WLAN_STA_PS_DRIVER) ||
+-          test_sta_flag(sta, WLAN_STA_PS_DELIVER))
++          test_sta_flag(sta, WLAN_STA_PS_DELIVER) ||
++          test_sta_flag(sta, WLAN_STA_CLEAR_PS_FILT))
+               goto out;
+ 
+       if (sdata->noack_map)