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

[Arseniy Krasnov]

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