diff options
Diffstat (limited to 'net/mac80211/rx.c')
| -rw-r--r-- | net/mac80211/rx.c | 31 |
1 files changed, 22 insertions, 9 deletions
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index 902b03ee8f60..2fe8f5f86499 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -538,6 +538,8 @@ static void ieee80211_release_reorder_frame(struct ieee80211_hw *hw, { struct sk_buff *skb = tid_agg_rx->reorder_buf[index]; + lockdep_assert_held(&tid_agg_rx->reorder_lock); + if (!skb) goto no_frame; @@ -557,6 +559,8 @@ static void ieee80211_release_reorder_frames(struct ieee80211_hw *hw, { int index; + lockdep_assert_held(&tid_agg_rx->reorder_lock); + while (seq_less(tid_agg_rx->head_seq_num, head_seq_num)) { index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn) % tid_agg_rx->buf_size; @@ -581,6 +585,8 @@ static void ieee80211_sta_reorder_release(struct ieee80211_hw *hw, { int index, j; + lockdep_assert_held(&tid_agg_rx->reorder_lock); + /* release the buffer until next missing frame */ index = seq_sub(tid_agg_rx->head_seq_num, tid_agg_rx->ssn) % tid_agg_rx->buf_size; @@ -683,10 +689,11 @@ static bool ieee80211_sta_manage_reorder_buf(struct ieee80211_hw *hw, int index; bool ret = true; + spin_lock(&tid_agg_rx->reorder_lock); + buf_size = tid_agg_rx->buf_size; head_seq_num = tid_agg_rx->head_seq_num; - spin_lock(&tid_agg_rx->reorder_lock); /* frame with out of date sequence number */ if (seq_less(mpdu_seq_num, head_seq_num)) { dev_kfree_skb(skb); @@ -1102,8 +1109,6 @@ static void ap_sta_ps_end(struct sta_info *sta) atomic_dec(&sdata->bss->num_sta_ps); - clear_sta_flags(sta, WLAN_STA_PS_STA); - #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG printk(KERN_DEBUG "%s: STA %pM aid %d exits power save mode\n", sdata->name, sta->sta.addr, sta->sta.aid); @@ -1158,6 +1163,7 @@ ieee80211_rx_h_sta_process(struct ieee80211_rx_data *rx) sta->rx_fragments++; sta->rx_bytes += rx->skb->len; sta->last_signal = status->signal; + ewma_add(&sta->avg_signal, -status->signal); /* * Change STA power saving mode only at the end of a frame @@ -1872,9 +1878,8 @@ ieee80211_rx_h_data(struct ieee80211_rx_data *rx) dev->stats.rx_packets++; dev->stats.rx_bytes += rx->skb->len; - if (ieee80211_is_data(hdr->frame_control) && - !is_multicast_ether_addr(hdr->addr1) && - local->hw.conf.dynamic_ps_timeout > 0 && local->ps_sdata) { + if (local->ps_sdata && local->hw.conf.dynamic_ps_timeout > 0 && + !is_multicast_ether_addr(((struct ethhdr *)rx->skb->data)->h_dest)) { mod_timer(&local->dynamic_ps_timer, jiffies + msecs_to_jiffies(local->hw.conf.dynamic_ps_timeout)); } @@ -1923,9 +1928,12 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames) mod_timer(&tid_agg_rx->session_timer, TU_TO_EXP_TIME(tid_agg_rx->timeout)); + spin_lock(&tid_agg_rx->reorder_lock); /* release stored frames up to start of BAR */ ieee80211_release_reorder_frames(hw, tid_agg_rx, start_seq_num, frames); + spin_unlock(&tid_agg_rx->reorder_lock); + kfree_skb(skb); return RX_QUEUED; } @@ -2247,6 +2255,10 @@ ieee80211_rx_h_mgmt(struct ieee80211_rx_data *rx) break; case cpu_to_le16(IEEE80211_STYPE_DEAUTH): case cpu_to_le16(IEEE80211_STYPE_DISASSOC): + if (is_multicast_ether_addr(mgmt->da) && + !is_broadcast_ether_addr(mgmt->da)) + return RX_DROP_MONITOR; + /* process only for station */ if (sdata->vif.type != NL80211_IFTYPE_STATION) return RX_DROP_MONITOR; @@ -2517,9 +2529,8 @@ static void ieee80211_invoke_rx_handlers(struct ieee80211_rx_data *rx) } /* - * This function makes calls into the RX path. Therefore the - * caller must hold the sta_info->lock and everything has to - * be under rcu_read_lock protection as well. + * This function makes calls into the RX path, therefore + * it has to be invoked under RCU read lock. */ void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid) { @@ -2741,6 +2752,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, if (ieee80211_prepare_and_rx_handle(&rx, skb, true)) return; + goto out; } } @@ -2780,6 +2792,7 @@ static void __ieee80211_rx_handle_packet(struct ieee80211_hw *hw, return; } + out: dev_kfree_skb(skb); } |