Commit c3d897e0 authored by Haiyang Zhang's avatar Haiyang Zhang Committed by David S. Miller
Browse files

hv_netvsc: Fix the queue_mapping in netvsc_vf_xmit() 



netvsc_vf_xmit() / dev_queue_xmit() will call VF NIC’s ndo_select_queue
or netdev_pick_tx() again. They will use skb_get_rx_queue() to get the
queue number, so the “skb->queue_mapping - 1” will be used. This may
cause the last queue of VF not been used.

Use skb_record_rx_queue() here, so that the skb_get_rx_queue() called
later will get the correct queue number, and VF will be able to use
all queues.

Fixes: b3bf5666 ("hv_netvsc: defer queue selection to VF")
Signed-off-by: default avatarHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4d820543

drivers/net/hyperv/netvsc_drv.c

+1 −1
Original line number Diff line number Diff line
@@ -502,7 +502,7 @@ static int netvsc_vf_xmit(struct net_device *net, struct net_device *vf_netdev, 
	int rc;



	skb->dev = vf_netdev;

	skb->queue_mapping = qdisc_skb_cb(skb)->slave_dev_queue_mapping;

	skb_record_rx_queue(skb, qdisc_skb_cb(skb)->slave_dev_queue_mapping);



	rc = dev_queue_xmit(skb);

	if (likely(rc == NET_XMIT_SUCCESS || rc == NET_XMIT_CN)) {