linux-kernel - [PATCH 3.12 157/182] mac80211: exclude AP_VLAN interfaces from tx power calculation

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Message-Id: <4f460f6940b950451107b2e6163e84b921708ccf.1399973152.git.jslaby@suse.cz>
Date:	Tue, 13 May 2014 11:28:29 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Felix Fietkau <nbd@...nwrt.org>,
	Johannes Berg <johannes.berg@...el.com>,
	Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 157/182] mac80211: exclude AP_VLAN interfaces from tx power calculation

From: Felix Fietkau <nbd@...nwrt.org>

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

===============

commit 764152ff66f4a8be1f9d7981e542ffdaa5bd7aff upstream.

Their power value is initialized to zero. This patch fixes an issue
where the configured power drops to the minimum value when AP_VLAN
interfaces are created/removed.

Signed-off-by: Felix Fietkau <nbd@...nwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 net/mac80211/main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index e765f77bb97a..2c5f21c7857f 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -148,6 +148,8 @@ static u32 ieee80211_hw_conf_chan(struct ieee80211_local *local)
 	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
 		if (!rcu_access_pointer(sdata->vif.chanctx_conf))
 			continue;
+		if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+			continue;
 		power = min(power, sdata->vif.bss_conf.txpower);
 	}
 	rcu_read_unlock();
-- 
1.9.3

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