[PATCH net-next v4 02/12] vsock: read from socket's error queue

Stefano Garzarella
Wed, 11 Oct 2023 12:54:33 -0000

On Tue, Oct 10, 2023 at 10:15:14PM +0300, Arseniy Krasnov
wrote:
>This adds handling of MSG_ERRQUEUE input flag in receive call. This flag
>is used to read socket's error queue instead of data queue. Possible
>scenario of error queue usage is receiving completions for transmission
>with MSG_ZEROCOPY flag. This patch also adds new defines:
'SOL_VSOCK'
>and 'VSOCK_RECVERR'.
>
>Signed-off-by: Arseniy Krasnov <avkrasnov at salutedevices.com>
>---
> Changelog:
> v1 -> v2:
>  * Place new defines for userspace to the existing file
'vm_sockets.h'
>    instead of creating new one.
> v2 -> v3:
>  * Add comments to describe 'SOL_VSOCK' and 'VSOCK_RECVERR'
in the file
>    'vm_sockets.h'.
>  * Reorder includes in 'af_vsock.c' in alphabetical order.
> v3 -> v4:
>  * Update comments for 'SOL_VSOCK' and 'VSOCK_RECVERR' by
adding more
>    details.
>
> include/linux/socket.h          |  1 +
> include/uapi/linux/vm_sockets.h | 17 +++++++++++++++++
> net/vmw_vsock/af_vsock.c        |  6 ++++++
> 3 files changed, 24 insertions(+)

Reviewed-by: Stefano Garzarella <sgarzare at redhat.com>