[PATCH] mac80211: allow interface settings changes only when down
DORMANTno replies
From: Johannes Berg <johannes@sipsolutions.net>
Date: 2008-09-16 18:23:44
We currently allow monitor flags changes and mesh ID changes when the interface is up, which can lead to trouble. Change it to only allow when down. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> --- net/mac80211/cfg.c | 3 +++ 1 file changed, 3 insertions(+)
--- everything.orig/net/mac80211/cfg.c 2008-09-16 20:19:48.000000000 +0200
+++ everything/net/mac80211/cfg.c 2008-09-16 20:20:37.000000000 +0200@@ -102,6 +102,9 @@ static int ieee80211_change_iface(struct if (ret) return ret; + if (netif_running(sdata->dev)) + return -EBUSY; + if (ieee80211_vif_is_mesh(&sdata->vif) && params->mesh_id_len) ieee80211_sdata_set_mesh_id(sdata, params->mesh_id_len,