When the vlan device is removed, ps->bc_buf processing can no longer
send its frames.
Signed-off-by: Michael Braun <michael-dev@xxxxxxxxxxxxx>
---
V4: Add this patch.
V5: add spin_lock, switch order of patches
V6: use ieee80211_free_txskb
net/mac80211/iface.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 40ff030..c1411f0 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -680,6 +680,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb, *tmp;
u32 hw_reconf_flags = 0;
int i, flushed;
+ struct ps_data *ps;
clear_bit(SDATA_STATE_RUNNING, &sdata->state);
@@ -758,6 +759,19 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
u.vlan.list)
dev_close(vlan->dev);
WARN_ON(!list_empty(&sdata->u.ap.vlans));
+ } else if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
+ /* remove all packets in parent bc_buf pointing to this dev */
+ ps = &sdata->bss->ps;
+
+ spin_lock_irqsave(&ps->bc_buf.lock, flags);
+ skb_queue_walk_safe(&ps->bc_buf, skb, tmp) {
+ if (skb->dev == sdata->dev) {
+ __skb_unlink(skb, &ps->bc_buf);
+ local->total_ps_buffered--;
+ ieee80211_free_txskb(&local->hw, skb);
+ }
+ }
+ spin_unlock_irqrestore(&ps->bc_buf.lock, flags);
} else if (sdata->vif.type == NL80211_IFTYPE_STATION) {
ieee80211_mgd_stop(sdata);
}
--
1.7.10.4
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