[PATCH 4.19 048/280] mac80211: call drv_ibss_join() on restart

From: Greg Kroah-Hartman
Date: Fri Mar 22 2019 - 08:46:36 EST


4.19-stable review patch. If anyone has any objections, please let me know.

------------------

[ Upstream commit 4926b51bfaa6d36bd6f398fb7698679d3962e19d ]

If a driver does any significant activity in its ibss_join method,
then it will very well expect that to be called during restart,
before any stations are added. Do that.

Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/mac80211/util.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 716cd6442d86..3deaa01ebee4 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -5,7 +5,7 @@
* Copyright 2007 Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright (C) 2015-2017 Intel Deutschland GmbH
- * Copyright (C) 2018 Intel Corporation
+ * Copyright (C) 2018-2019 Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -2020,6 +2020,10 @@ int ieee80211_reconfig(struct ieee80211_local *local)
case NL80211_IFTYPE_AP_VLAN:
case NL80211_IFTYPE_MONITOR:
break;
+ case NL80211_IFTYPE_ADHOC:
+ if (sdata->vif.bss_conf.ibss_joined)
+ WARN_ON(drv_join_ibss(local, sdata));
+ /* fall through */
default:
ieee80211_reconfig_stations(sdata);
/* fall through */
--
2.19.1