diff options
Diffstat (limited to 'package/kernel/mac80211/patches/335-mac80211-fix-handling-of-PS-filtering-with-fast-xmit.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/335-mac80211-fix-handling-of-PS-filtering-with-fast-xmit.patch | 45 |
1 files changed, 45 insertions, 0 deletions
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 index 0000000000..7aef205fe1 --- /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) |