Re: [PATCH v10 04/18] af_vsock: implement SEQPACKET receive loop

[Stefano Garzarella]

On Thu, May 20, 2021 at 10:16:08PM +0300, Arseny Krasnov wrote:
> Add receive loop for SEQPACKET. It looks like receive loop for
> STREAM, but there are differences:
> 1) It doesn't call notify callbacks.
> 2) It doesn't care about 'SO_SNDLOWAT' and 'SO_RCVLOWAT' values, because
>   there is no sense for these values in SEQPACKET case.
> 3) It waits until whole record is received or error is found during
>   receiving.
> 4) It processes and sets 'MSG_TRUNC' flag.
>
> So to avoid extra conditions for two types of socket inside one loop, two
> independent functions were created.
>
> Signed-off-by: Arseny Krasnov <arseny.krasnov@xxxxxxxxxxxxx>
> ---
> v9 -> v10:
> 1) Use 'msg_data_left()' instead of direct access to 'msg_hdr'.
>
> include/net/af_vsock.h   |  4 +++
> net/vmw_vsock/af_vsock.c | 72 +++++++++++++++++++++++++++++++++++++++-
> 2 files changed, 75 insertions(+), 1 deletion(-)

Reviewed-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>