netdev - [PATCH net-next 0/3] ioctl support for AF_VSOCK and virtio-based transports

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Date: Tue,  2 Apr 2024 17:05:36 +0200
From: Luigi Leonardi <luigi.leonardi@...look.com>
To: sgarzare@...hat.com,
	kvm@...r.kernel.org,
	jasowang@...hat.com,
	virtualization@...ts.linux.dev,
	mst@...hat.com,
	kuba@...nel.org,
	xuanzhuo@...ux.alibaba.com,
	netdev@...r.kernel.org,
	stefanha@...hat.com,
	pabeni@...hat.com,
	davem@...emloft.net,
	edumazet@...gle.com
Cc: Luigi Leonardi <luigi.leonardi@...look.com>
Subject: [PATCH net-next 0/3] ioctl support for AF_VSOCK and virtio-based transports

This patch series introduce the support for ioctl(s) in AF_VSOCK.
The only ioctl currently available is SIOCOUTQ, which returns
the number of unsent or unacked packets. It is available for
SOCK_STREAM, SOCK_SEQPACKET and SOCK_DGRAM.

As this information is transport-dependent, a new optional callback
is introduced: stream_bytes_unsent.

The first patch add ioctl support in AF_VSOCK, while the second
patch introduce support for SOCK_STREAM and SOCK_SEQPACKET
in all virtio-based transports: virtio_transport (G2H),
vhost-vsock (H2G) and vsock-loopback.

The latest patch introduce two tests for this new feature.
More details can be found in each patch changelog.

Luigi Leonardi (3):
  vsock: add support for SIOCOUTQ ioctl for all vsock socket types.
  vsock/virtio: add SIOCOUTQ support for all virtio based transports
  test/vsock: add ioctl unsent bytes test

 drivers/vhost/vsock.c                   |  3 +-
 include/linux/virtio_vsock.h            |  7 +++
 include/net/af_vsock.h                  |  1 +
 net/vmw_vsock/af_vsock.c                | 42 ++++++++++++-
 net/vmw_vsock/virtio_transport.c        |  3 +-
 net/vmw_vsock/virtio_transport_common.c | 30 +++++++++
 net/vmw_vsock/vsock_loopback.c          |  6 ++
 tools/testing/vsock/util.c              |  6 +-
 tools/testing/vsock/util.h              |  3 +
 tools/testing/vsock/vsock_test.c        | 83 +++++++++++++++++++++++++
 10 files changed, 176 insertions(+), 8 deletions(-)

-- 
2.34.1