[PATCH net V1 2/3] veth: stop and start all TX queue in netdev down/up

[Jesper Dangaard Brouer <hawk@kernel.org>]

The veth driver started manipulating TXQ states in commit
dc82a33297fc ("veth: apply qdisc backpressure on full ptr_ring
to reduce TX drops").

Other drivers manipulating TXQ states takes care of stopping
and starting TXQs in NDOs.  Thus, adding this to veth .ndo_open
and .ndo_stop.

Fixes: dc82a33297fc ("veth: apply qdisc backpressure on full ptr_ring to reduce TX drops")
Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org>
---
 drivers/net/veth.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index 7b1a9805b270..3976ddda5fb8 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -1404,6 +1404,9 @@ static int veth_open(struct net_device *dev)
 			return err;
 	}
 
+	netif_tx_start_all_queues(dev);
+	netif_tx_start_all_queues(peer);
+
 	if (peer->flags & IFF_UP) {
 		netif_carrier_on(dev);
 		netif_carrier_on(peer);
@@ -1423,6 +1426,10 @@ static int veth_close(struct net_device *dev)
 	if (peer)
 		netif_carrier_off(peer);
 
+	netif_tx_stop_all_queues(dev);
+	if (peer)
+		netif_tx_stop_all_queues(peer);
+
 	if (priv->_xdp_prog)
 		veth_disable_xdp(dev);
 	else if (veth_gro_requested(dev))