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Commit f8b25cda authored by Johannes Berg's avatar Johannes Berg Committed by John W. Linville
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mac80211: allow interface settings changes only when down 



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: default avatarJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 723b038d

net/mac80211/cfg.c

+3 −0
Original line number Diff line number Diff line
@@ -100,6 +100,9 @@ static int ieee80211_change_iface(struct wiphy *wiphy, int ifindex, 
	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,