mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
55 lines
1.8 KiB
Diff
55 lines
1.8 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
|
|
Date: Tue, 2 Aug 2016 11:11:13 +0200
|
|
Subject: [PATCH] mac80211: fix purging multicast PS buffer queue
|
|
|
|
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.
|
|
|
|
Signed-off-by: Felix Fietkau <nbd@nbd.name>
|
|
---
|
|
|
|
--- a/net/mac80211/cfg.c
|
|
+++ b/net/mac80211/cfg.c
|
|
@@ -868,7 +868,7 @@ static int ieee80211_stop_ap(struct wiph
|
|
|
|
/* 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);
|
|
--- a/net/mac80211/tx.c
|
|
+++ b/net/mac80211/tx.c
|
|
@@ -368,7 +368,7 @@ static void purge_old_ps_buffers(struct
|
|
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);
|
|
}
|
|
@@ -451,7 +451,7 @@ ieee80211_tx_h_multicast_ps_buf(struct i
|
|
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++;
|
|
|
|
@@ -4276,7 +4276,7 @@ ieee80211_get_buffered_bc(struct ieee802
|
|
sdata = IEEE80211_DEV_TO_SUB_IF(skb->dev);
|
|
if (!ieee80211_tx_prepare(sdata, &tx, NULL, skb))
|
|
break;
|
|
- dev_kfree_skb_any(skb);
|
|
+ ieee80211_free_txskb(hw, skb);
|
|
}
|
|
|
|
info = IEEE80211_SKB_CB(skb);
|