with vhost tx zero_copy, guest nic might get hang when host reserving
skb in socket queue delivered by guest, the case has been solved in
tun, it also been needed by openvswitch. This could easily happened
when a LAST_ACK state tcp occuring between guest and host.
Signed-off-by: Chuanyu Qin
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On Mon, Feb 24, 2014 at 09:15:12PM +0800, Qin Chuanyu wrote:
> with vhost tx zero_copy, guest nic might get hang when host reserving
> skb in socket queue delivered by guest, the case has been solved in
> tun, it also been needed by openvswitch. This could easily happened
> when a LAST_ACK state tc
Hi,
I'm also planning a similar patch, but it will call skb_orphan_frags on
the skb in datapath.c::queue_userspace_packet, right before
skb_zerocopy, so packets sent up to userspace via Netlink doesn't harm
guests. I haven't checked your patch thoroughly, does it handle a
different scenario?
On 2014/2/24 22:45, Zoltan Kiss wrote:
Hi,
I'm also planning a similar patch, but it will call skb_orphan_frags on
the skb in datapath.c::queue_userspace_packet, right before
skb_zerocopy, so packets sent up to userspace via Netlink doesn't harm
guests. I haven't checked your patch thoroughly, d
