linux-kernel - [PATCH 3.10 29/48] mac80211: exclude AP_VLAN interfaces from tx power calculation

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Message-Id: <20140511191952.063700876@linuxfoundation.org>
Date:	Sun, 11 May 2014 21:20:03 +0200
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Felix Fietkau <nbd@...nwrt.org>,
	Johannes Berg <johannes.berg@...el.com>
Subject: [PATCH 3.10 29/48] mac80211: exclude AP_VLAN interfaces from tx power calculation

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

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

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

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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/mac80211/main.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -157,6 +157,8 @@ static u32 ieee80211_hw_conf_chan(struct
 	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();


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