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: unsent_bytes.
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.
v2->v3
Applied all reviewers' suggetions:
- Minor style and code changes
- atomic_int replaced with an existing spin_lock.
Introduced lock_sock on ioctl call.
Rebased to latest net-next
v1->v2
Applied all Stefano's suggestions:
- vsock_do_ioctl has been rewritten
- ioctl(SIOCOUTQ) test is skipped when it is not supported
- Minor variable/function name changes
- rebased to latest net-next
Signed-off-by: Luigi Leonardi <luigi.leonardi@xxxxxxxxxxx>
---
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 | 4 +-
include/linux/virtio_vsock.h | 7 +++
include/net/af_vsock.h | 3 ++
net/vmw_vsock/af_vsock.c | 60 +++++++++++++++++++++--
net/vmw_vsock/virtio_transport.c | 4 +-
net/vmw_vsock/virtio_transport_common.c | 35 ++++++++++++++
net/vmw_vsock/vsock_loopback.c | 7 +++
tools/testing/vsock/util.c | 6 +--
tools/testing/vsock/util.h | 3 ++
tools/testing/vsock/vsock_test.c | 85 +++++++++++++++++++++++++++++++++
10 files changed, 206 insertions(+), 8 deletions(-)
---
base-commit: 50b70845fc5c22cf7e7d25b57d57b3dca1725aa5
change-id: 20240626-ioctl_next-fbbcdd596063
Best regards,
--
Luigi Leonardi <luigi.leonardi@xxxxxxxxxxx>
