linux-kernel - [PATCH 4.9 027/152] mac80211: unconditionally start new netdev queues with iTXQ support

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Message-Id: <20170410164201.396934962@linuxfoundation.org>
Date:   Mon, 10 Apr 2017 18:41:19 +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, Johannes Berg <johannes.berg@...el.com>
Subject: [PATCH 4.9 027/152] mac80211: unconditionally start new netdev queues with iTXQ support

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

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

From: Johannes Berg <johannes.berg@...el.com>

commit 7d65f82954dadbbe7b6e1aec7e07ad17bc6d958b upstream.

When internal mac80211 TXQs aren't supported, netdev queues must
always started out started even when driver queues are stopped
while the interface is added. This is necessary because with the
internal TXQ support netdev queues are never stopped and packet
scheduling/dropping is done in mac80211.

Fixes: 80a83cfc434b1 ("mac80211: skip netdev queue control with software queuing")
Reported-and-tested-by: Sven Eckelmann <sven.eckelmann@...nmesh.com>
Signed-off-by: Johannes Berg <johannes.berg@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/mac80211/iface.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -726,7 +726,8 @@ int ieee80211_do_open(struct wireless_de
 	ieee80211_recalc_ps(local);
 
 	if (sdata->vif.type == NL80211_IFTYPE_MONITOR ||
-	    sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
+	    sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+	    local->ops->wake_tx_queue) {
 		/* XXX: for AP_VLAN, actually track AP queues */
 		netif_tx_start_all_queues(dev);
 	} else if (dev) {