Re: [RFC PATCH v4 0/4] several updates to virtio/vsock

From: Stefano Garzarella
Date: Fri Mar 10 2023 - 06:40:59 EST


On Fri, Mar 10, 2023 at 12:42:13PM +0300, Arseniy Krasnov wrote:


On 10.03.2023 12:09, Stefano Garzarella wrote:
Hi Arseniy,

On Thu, Mar 09, 2023 at 11:24:42PM +0300, Arseniy Krasnov wrote:
Hello,

this patchset evolved from previous v2 version (see link below). It does
several updates to virtio/vsock:
1) Changes 'virtio_transport_inc/dec_rx_pkt()' interface. Now instead of
  using skbuff state ('head' and 'data' pointers) to update 'fwd_cnt'
  and 'rx_bytes', integer value is passed as an input argument. This
  makes code more simple, because in this case we don't need to update
  skbuff state before calling 'virtio_transport_inc/dec_rx_pkt()'. In
  more common words - we don't need to change skbuff state to update
  'rx_bytes' and 'fwd_cnt' correctly.
2) For SOCK_STREAM, when copying data to user fails, current skbuff is
  not dropped. Next read attempt will use same skbuff and last offset.
  Instead of 'skb_dequeue()', 'skb_peek()' + '__skb_unlink()' are used.
  This behaviour was implemented before skbuff support.
3) For SOCK_SEQPACKET it removes unneeded 'skb_pull()' call, because for
  this type of socket each skbuff is used only once: after removing it
  from socket's queue, it will be freed anyway.

thanks for the fixes, I would wait a few days to see if there are any
comments and then I think you can send it on net without RFC.

@Bobby if you can take a look, your ack would be appreciated :-)
Ok, thanks for review. I'll wait for several days and also wait until
net-next will be opened. Then i'll resend this patchset with net-next

Since they are fixes, they should go with the net tree, not net-next.

Cheers,
Stefano