Re: [PATCH net-next V2] virito-net: set queues after reset during xdp_set

From: David Miller
Date: Mon Feb 20 2017 - 22:23:17 EST

From: Jason Wang <jasowang@xxxxxxxxxx>
Date: Mon, 20 Feb 2017 11:50:20 +0800

> We set queues before reset which will cause a crash[1]. This is
> because is_xdp_raw_buffer_queue() depends on the old xdp queue pairs
> number to do the correct detection. So fix this by
> - passing xdp queue pairs and current queue pairs to virtnet_reset()
> - change vi->xdp_qp after reset but before refill, to make sure both
> free_unused_bufs() and refill can make correct detection of XDP.
> - remove the duplicated queue pairs setting before virtnet_reset()
> since we will do it inside virtnet_reset()
> [1]
> Fixes: 2de2f7f40ef9 ("virtio_net: XDP support for adjust_head")
> Cc: John Fastabend <john.fastabend@xxxxxxxxx>
> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx>

Applied and queued up for -stable, thanks Jason.