diff options
| author | Felix Fietkau <nbd@nbd.name> | 2016-08-02 11:13:41 +0200 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2016-08-31 19:25:44 -0400 |
| commit | 2e46bd052ad18a769a8f28e8df3968bc7914ac74 (patch) | |
| tree | 0a0ddc2f79539c86f1951447daa4d9120f88f779 | |
| parent | 0efba8d124de904db7766645561a6f39c501f2c1 (diff) | |
| download | lwn-2e46bd052ad18a769a8f28e8df3968bc7914ac74.tar.gz lwn-2e46bd052ad18a769a8f28e8df3968bc7914ac74.zip | |
mac80211: fix purging multicast PS buffer queue
[ Upstream commit 6b07d9ca9b5363dda959b9582a3fc9c0b89ef3b5 ]
The code currently assumes that buffered multicast PS frames don't have
a pending ACK frame for tx status reporting.
However, hostapd sends a broadcast deauth frame on teardown for which tx
status is requested. This can lead to the "Have pending ack frames"
warning on module reload.
Fix this by using ieee80211_free_txskb/ieee80211_purge_tx_queue.
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
| -rw-r--r-- | net/mac80211/cfg.c | 2 | ||||
| -rw-r--r-- | net/mac80211/tx.c | 6 |
2 files changed, 4 insertions, 4 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 343da1e35025..095e3958d83c 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -865,7 +865,7 @@ static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev) /* free all potentially still buffered bcast frames */ local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf); - skb_queue_purge(&sdata->u.ap.ps.bc_buf); + ieee80211_purge_tx_queue(&local->hw, &sdata->u.ap.ps.bc_buf); mutex_lock(&local->mtx); ieee80211_vif_copy_chanctx_to_vlans(sdata, true); diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 45e782825567..655abb9aa597 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -353,7 +353,7 @@ static void purge_old_ps_buffers(struct ieee80211_local *local) skb = skb_dequeue(&ps->bc_buf); if (skb) { purged++; - dev_kfree_skb(skb); + ieee80211_free_txskb(&local->hw, skb); } total += skb_queue_len(&ps->bc_buf); } @@ -436,7 +436,7 @@ ieee80211_tx_h_multicast_ps_buf(struct ieee80211_tx_data *tx) if (skb_queue_len(&ps->bc_buf) >= AP_MAX_BC_BUFFER) { ps_dbg(tx->sdata, "BC TX buffer full - dropping the oldest frame\n"); - dev_kfree_skb(skb_dequeue(&ps->bc_buf)); + ieee80211_free_txskb(&tx->local->hw, skb_dequeue(&ps->bc_buf)); } else tx->local->total_ps_buffered++; @@ -2999,7 +2999,7 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, sdata = IEEE80211_DEV_TO_SUB_IF(skb->dev); if (!ieee80211_tx_prepare(sdata, &tx, skb)) break; - dev_kfree_skb_any(skb); + ieee80211_free_txskb(hw, skb); } info = IEEE80211_SKB_CB(skb); |