[PATCH net-next v1 00/12] vsock/virtio: continue MSG_ZEROCOPY support

From: Arseniy Krasnov
Date: Fri Sep 22 2023 - 01:32:09 EST


Hello,

this patchset contains second and third parts of another big patchset
for MSG_ZEROCOPY flag support:
https://lore.kernel.org/netdev/20230701063947.3422088-1-AVKrasnov@xxxxxxxxxxxxxx/

During review of this series, Stefano Garzarella <sgarzare@xxxxxxxxxx>
suggested to split it for three parts to simplify review and merging:

1) virtio and vhost updates (for fragged skbs) (merged to net-next, see
link below)
2) AF_VSOCK updates (allows to enable MSG_ZEROCOPY mode and read
tx completions) and update for Documentation/. <-- this patchset
3) Updates for tests and utils. <-- this patchset

Part 1) was merged:
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=71b263e79370348349553ecdf46f4a69eb436dc7

Head for this patchset is:
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=71b263e79370348349553ecdf46f4a69eb436dc7

Arseniy Krasnov (12):
vsock: fix EPOLLERR set on non-empty error queue
vsock: read from socket's error queue
vsock: check for MSG_ZEROCOPY support on send
vsock: enable SOCK_SUPPORT_ZC bit
vhost/vsock: support MSG_ZEROCOPY for transport
vsock/virtio: support MSG_ZEROCOPY for transport
vsock/loopback: support MSG_ZEROCOPY for transport
vsock: enable setting SO_ZEROCOPY
docs: net: description of MSG_ZEROCOPY for AF_VSOCK
test/vsock: MSG_ZEROCOPY flag tests
test/vsock: MSG_ZEROCOPY support for vsock_perf
test/vsock: io_uring rx/tx tests

Documentation/networking/msg_zerocopy.rst | 13 +-
drivers/vhost/vsock.c | 7 +
include/linux/socket.h | 1 +
include/net/af_vsock.h | 7 +
include/uapi/linux/vsock.h | 9 +
net/vmw_vsock/af_vsock.c | 64 ++++-
net/vmw_vsock/virtio_transport.c | 7 +
net/vmw_vsock/vsock_loopback.c | 6 +
tools/testing/vsock/Makefile | 9 +-
tools/testing/vsock/util.c | 222 +++++++++++++++
tools/testing/vsock/util.h | 19 ++
tools/testing/vsock/vsock_perf.c | 143 +++++++++-
tools/testing/vsock/vsock_test.c | 16 ++
tools/testing/vsock/vsock_test_zerocopy.c | 314 +++++++++++++++++++++
tools/testing/vsock/vsock_test_zerocopy.h | 15 +
tools/testing/vsock/vsock_uring_test.c | 321 ++++++++++++++++++++++
16 files changed, 1158 insertions(+), 15 deletions(-)
create mode 100644 include/uapi/linux/vsock.h
create mode 100644 tools/testing/vsock/vsock_test_zerocopy.c
create mode 100644 tools/testing/vsock/vsock_test_zerocopy.h
create mode 100644 tools/testing/vsock/vsock_uring_test.c

--
2.25.1