hv_netvsc: Fix the queue_mapping in netvsc_vf_xmit()
authorHaiyang Zhang <haiyangz@microsoft.com>
Thu, 20 Aug 2020 21:53:15 +0000 (14:53 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 26 Aug 2020 08:29:59 +0000 (10:29 +0200)
commit30cb922fdc59f81403a9ce9fdbc277be0d9da3ee
tree45a2599a6190ac41c98a33d4f5f2f8236a0ddc4b
parent5ca8e51f09ffe035cdfc7ae62adf1bfa48a1f604
hv_netvsc: Fix the queue_mapping in netvsc_vf_xmit()

[ Upstream commit c3d897e01aef8ddc43149e4d661b86f823e3aae7 ]

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: b3bf5666a510 ("hv_netvsc: defer queue selection to VF")
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/net/hyperv/netvsc_drv.c