lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Tue, 14 Sep 2021 05:54:33 +0000
From:   Jiang Wang <jiang.wang@...edance.com>
To:     jiangleetcode@...il.com
Cc:     virtualization@...ts.linux-foundation.org, stefanha@...hat.com,
        sgarzare@...hat.com, mst@...hat.com, arseny.krasnov@...persky.com,
        jhansen@...are.com, cong.wang@...edance.com,
        duanxiongchun@...edance.com, xieyongji@...edance.com,
        chaiwen.cc@...edance.com, Jason Wang <jasowang@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>, kvm@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RFC v2 0/5] virtio/vsock: introduce SOCK_DGRAM support

This patchset implements support of SOCK_DGRAM for virtio
transport.

Datagram sockets are connectionless and unreliable. To avoid unfair contention
with stream and other sockets, add two more virtqueues and
a new feature bit to indicate if those two new queues exist or not.

Dgram does not use the existing credit update mechanism for
stream sockets. When sending from the guest/driver, sending packets
synchronously, so the sender will get an error when the virtqueue is full.
When sending from the host/device, send packets asynchronously
because the descriptor memory belongs to the corresponding QEMU
process.

The virtio spec patch is here:
https://www.mail-archive.com/virtualization@lists.linux-foundation.org/msg47457.html

For those who prefer git repo, here is the link for the linux kernel:
https://github.com/Jiang1155/linux/tree/vsock-dgram-v2

qemu patch link:
https://lists.gnu.org/archive/html/qemu-devel/2021-09/msg03462.html


To do:
1. use skb when receiving packets
2. support multiple transport
3. support mergeable rx buffer
4. support disabling F_STREAM feature bit


v1 -> v2 :
  - fix migration bug in vhost-vsock
  - rename some variables
  - clean up some code in virtio-vsock
  - use le_to_cpu16 in virtio-vsock



Jiang Wang (5):
  virtio/vsock: add VIRTIO_VSOCK_F_DGRAM feature bit
  virtio/vsock: add support for virtio datagram
  vhost/vsock: add support for vhost dgram.
  vsock_test: add tests for vsock dgram
  virtio/vsock: add sysfs for rx buf len for dgram

 drivers/vhost/vsock.c                         | 220 +++++++--
 include/linux/virtio_vsock.h                  |   9 +
 include/net/af_vsock.h                        |   1 +
 .../events/vsock_virtio_transport_common.h    |   2 +
 include/uapi/linux/virtio_vsock.h             |   3 +
 net/vmw_vsock/af_vsock.c                      |  12 +
 net/vmw_vsock/virtio_transport.c              | 463 +++++++++++++++---
 net/vmw_vsock/virtio_transport_common.c       | 181 ++++++-
 tools/testing/vsock/util.c                    | 105 ++++
 tools/testing/vsock/util.h                    |   4 +
 tools/testing/vsock/vsock_test.c              | 195 ++++++++
 11 files changed, 1083 insertions(+), 112 deletions(-)

-- 
2.20.1

Powered by blists - more mailing lists