linux-kernel - [PATCH net-next v3 00/12] vsock/virtio: continue MSG

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Message-ID: <20231007172139.1338644-1-avkrasnov@salutedevices.com>
Date:   Sat, 7 Oct 2023 20:21:27 +0300
From:   Arseniy Krasnov <avkrasnov@...utedevices.com>
To:     Stefan Hajnoczi <stefanha@...hat.com>,
        Stefano Garzarella <sgarzare@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Bobby Eshleman <bobby.eshleman@...edance.com>
CC:     <kvm@...r.kernel.org>, <virtualization@...ts.linux-foundation.org>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <kernel@...rdevices.ru>, <oxffffaa@...il.com>,
        <avkrasnov@...utedevices.com>
Subject: [PATCH net-next v3 00/12] vsock/virtio: continue MSG_ZEROCOPY support

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@sberdevices.ru/

During review of this series, Stefano Garzarella <sgarzare@...hat.com>
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=91e43ca0090b5fd59302c3d150835299785f30ea

Link to v1:
https://lore.kernel.org/netdev/20230922052428.4005676-1-avkrasnov@salutedevices.com/
Link to v2:
https://lore.kernel.org/netdev/20230930210308.2394919-1-avkrasnov@salutedevices.com/

Changelog:                                                              
 v1 -> v2:                                                              
 * Patchset rebased and tested on new HEAD of net-next (see hash above).
 * See per-patch changelog after ---. 
 v2 -> v3:                                                              
 * Patchset rebased and tested on new HEAD of net-next (see hash above).
 * See per-patch changelog after ---. 

Arseniy Krasnov (12):
  vsock: set EPOLLERR 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/vm_sockets.h           |  12 +
 net/vmw_vsock/af_vsock.c                  |  63 +++-
 net/vmw_vsock/virtio_transport.c          |   7 +
 net/vmw_vsock/vsock_loopback.c            |   6 +
 tools/testing/vsock/.gitignore            |   1 +
 tools/testing/vsock/Makefile              |   9 +-
 tools/testing/vsock/msg_zerocopy_common.h |  92 ++++++
 tools/testing/vsock/util.c                | 110 +++++++
 tools/testing/vsock/util.h                |   5 +
 tools/testing/vsock/vsock_perf.c          |  80 ++++-
 tools/testing/vsock/vsock_test.c          |  16 +
 tools/testing/vsock/vsock_test_zerocopy.c | 367 ++++++++++++++++++++++
 tools/testing/vsock/vsock_test_zerocopy.h |  15 +
 tools/testing/vsock/vsock_uring_test.c    | 350 +++++++++++++++++++++
 18 files changed, 1145 insertions(+), 16 deletions(-)
 create mode 100644 tools/testing/vsock/msg_zerocopy_common.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