From 2b436312f0919c05804fed5aa4b7f255db196e7a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 23 May 2013 21:04:38 +0200 Subject: [PATCH] mac80211: fix queue handling crash The code I added in "mac80211: don't start new netdev queues if driver stopped" crashes for monitor and AP VLAN interfaces because while they have a netdev, they don't have queues set up by the driver. To fix the crash, exclude these from queue accounting here and just start their netdev queues unconditionally. For monitor, this is the best we can do, as we can redirect frames there to any other interface and don't know which one that will since it can be different for each frame. For AP VLAN interfaces, we can do better later and actually properly track the queue status. Not doing this is really a separate bug though. Reported-by: Ilan Peer Reported-by: Jouni Malinen Signed-off-by: Johannes Berg --- net/mac80211/iface.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 60f1ce5e5e52..68f51c3af49f 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -653,7 +653,11 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) ieee80211_recalc_ps(local, -1); - if (dev) { + if (sdata->vif.type == NL80211_IFTYPE_MONITOR || + sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { + /* XXX: for AP_VLAN, actually track AP queues */ + netif_tx_start_all_queues(dev); + } else if (dev) { unsigned long flags; int n_acs = IEEE80211_NUM_ACS; int ac; -- 2.34.1