Re: [PATCH V2 net-next 5/7] tun: support receiving skb through msg_control

From: Jason Wang
Date: Fri Mar 31 2017 - 00:10:36 EST




On 2017å03æ30æ 23:06, Michael S. Tsirkin wrote:
On Thu, Mar 30, 2017 at 03:22:28PM +0800, Jason Wang wrote:
This patch makes tun_recvmsg() can receive from skb from its caller
through msg_control. Vhost_net will be the first user.

Signed-off-by: Jason Wang<jasowang@xxxxxxxxxx>
Do we need to bother with tun? I didn't realize one
can even use that with vhost. What would be the point of
all the virtio header stuff dealing with checksums etc?

Even if you see a use-case is it worth optimizing?



It's for tap in fact. I use "tun" just because we have already had a tap.c which is used by macvtap.

Thanks