This patch tackles one of the problems of my reorder release timer patch from August. <http://www.spinics.net/lists/linux-wireless/msg57214.html> => What if the reorder release triggers and ap_sta_ps_end (called by ieee80211_rx_h_sta_process) accidentally clears the WLAN_STA_PS_STA flag, because 100ms ago - when the STA was still active - frames were put into the reorder buffer. Signed-off-by: Christian Lamparter <chunkeey@xxxxxxxxxxxxxx> --- RFC -> PATCH: fix typo: DEFERED -> DEFERRED --- net/mac80211/ieee80211_i.h | 2 ++ net/mac80211/rx.c | 4 ++++ 2 files changed, 6 insertions(+), 0 deletions(-) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index a0cf5ab..bb71fe3 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -168,6 +168,7 @@ typedef unsigned __bitwise__ ieee80211_rx_result; * @IEEE80211_RX_FRAGMENTED: fragmented frame * @IEEE80211_RX_AMSDU: a-MSDU packet * @IEEE80211_RX_MALFORMED_ACTION_FRM: action frame is malformed + * @IEEE80211_RX_DEFERRED_RELEASE: frame was subjected to receive reordering * * These are per-frame flags that are attached to a frame in the * @rx_flags field of &struct ieee80211_rx_status. @@ -178,6 +179,7 @@ enum ieee80211_packet_rx_flags { IEEE80211_RX_FRAGMENTED = BIT(2), IEEE80211_RX_AMSDU = BIT(3), IEEE80211_RX_MALFORMED_ACTION_FRM = BIT(4), + IEEE80211_RX_DEFERRED_RELEASE = BIT(5), }; /** diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index b6c2a30..e612805 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -537,6 +537,7 @@ static void ieee80211_release_reorder_frame(struct ieee80211_hw *hw, struct sk_buff_head *frames) { struct sk_buff *skb = tid_agg_rx->reorder_buf[index]; + struct ieee80211_rx_status *status; lockdep_assert_held(&tid_agg_rx->reorder_lock); @@ -546,6 +547,8 @@ static void ieee80211_release_reorder_frame(struct ieee80211_hw *hw, /* release the frame from the reorder ring buffer */ tid_agg_rx->stored_mpdu_num--; tid_agg_rx->reorder_buf[index] = NULL; + status = IEEE80211_SKB_RXCB(skb); + status->rx_flags |= IEEE80211_RX_DEFERRED_RELEASE; __skb_queue_tail(frames, skb); no_frame: @@ -1185,6 +1188,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) * exchange sequence. */ if (!ieee80211_has_morefrags(hdr->frame_control) && + !(status->rx_flags & IEEE80211_RX_DEFERRED_RELEASE) && (rx->sdata->vif.type == NL80211_IFTYPE_AP || rx->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)) { if (test_sta_flags(sta, WLAN_STA_PS_STA)) { -- 1.7.2.3 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
