From:   Felix Fietkau <nbd@nbd.name>
To:     linux-wireless@vger.kernel.org
Cc:     johannes@sipsolutions.net
Subject: [PATCH 5/5] mac80211: set NETIF_F_LLTX when using intermediate tx queues
Date:   Sat, 16 Mar 2019 18:06:34 +0100
Message-Id: <20190316170634.13125-5-nbd@nbd.name>
In-Reply-To: <20190316170634.13125-1-nbd@nbd.name>
References: <20190316170634.13125-1-nbd@nbd.name>
Sender: linux-wireless-owner@vger.kernel.org
Precedence: bulk

When using iTXQ, tx sequence number allocation and statistics are run at
dequeue time. Because of that, it is safe to enable NETIF_F_LLTX, which
allows tx handlers to run on multiple CPUs in parallel.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 net/mac80211/iface.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 8ab23bbfba3e..7a4ea97d15af 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1227,6 +1227,7 @@ static void ieee80211_if_setup(struct net_device *dev)
 static void ieee80211_if_setup_no_queue(struct net_device *dev)
 {
 	ieee80211_if_setup(dev);
+	dev->features |= NETIF_F_LLTX;
 	dev->priv_flags |= IFF_NO_QUEUE;
 }
 
-- 
2.17.0