[PATCH v2 5/5] mac80211: disallow changing auto_open_plinks

[Thomas Pedersen <thomas@cozybit.com>]

while user MPM is running.

Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
---
 net/mac80211/cfg.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 89c7b00..ebfb060 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1773,8 +1773,11 @@ static int ieee80211_update_mesh_config(struct wiphy *wiphy,
 		conf->dot11MeshTTL = nconf->dot11MeshTTL;
 	if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
 		conf->element_ttl = nconf->element_ttl;
-	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask))
+	if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
+		if (ifmsh->user_mpm)
+			return -EBUSY;
 		conf->auto_open_plinks = nconf->auto_open_plinks;
+	}
 	if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
 		conf->dot11MeshNbrOffsetMaxNeighbor =
 			nconf->dot11MeshNbrOffsetMaxNeighbor;
-- 
1.7.10.4