From: Jiang Wang <jiang.wang@bytedance.com>
To: jiangleetcode@gmail.com
Cc: virtualization@lists.linux-foundation.org, stefanha@redhat.com,
sgarzare@redhat.com, mst@redhat.com,
arseny.krasnov@kaspersky.com, jhansen@vmware.com,
cong.wang@bytedance.com, duanxiongchun@bytedance.com,
xieyongji@bytedance.com, chaiwen.cc@bytedance.com,
Jason Wang <jasowang@redhat.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@redhat.com>,
kvm@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [RFC v2 0/5] virtio/vsock: introduce SOCK_DGRAM support
Date: Tue, 14 Sep 2021 05:54:33 +0000 [thread overview]
Message-ID: <20210914055440.3121004-1-jiang.wang@bytedance.com> (raw)
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
next reply other threads:[~2021-09-14 5:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-14 5:54 Jiang Wang [this message]
2021-09-14 5:54 ` [RFC v2 1/5] virtio/vsock: add VIRTIO_VSOCK_F_DGRAM feature bit Jiang Wang
2021-09-14 5:54 ` [RFC v2 2/5] virtio/vsock: add support for virtio datagram Jiang Wang
2021-09-14 6:56 ` Michael S. Tsirkin
2021-09-14 5:54 ` [RFC v2 3/5] vhost/vsock: add support for vhost dgram Jiang Wang
2021-09-14 6:52 ` Michael S. Tsirkin
2021-09-14 5:54 ` [RFC v2 4/5] vsock_test: add tests for vsock dgram Jiang Wang
2021-09-14 5:54 ` [RFC v2 5/5] virtio/vsock: add sysfs for rx buf len for dgram Jiang Wang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210914055440.3121004-1-jiang.wang@bytedance.com \
--to=jiang.wang@bytedance.com \
--cc=arseny.krasnov@kaspersky.com \
--cc=chaiwen.cc@bytedance.com \
--cc=cong.wang@bytedance.com \
--cc=davem@davemloft.net \
--cc=duanxiongchun@bytedance.com \
--cc=jasowang@redhat.com \
--cc=jhansen@vmware.com \
--cc=jiangleetcode@gmail.com \
--cc=kuba@kernel.org \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=mst@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=rostedt@goodmis.org \
--cc=sgarzare@redhat.com \
--cc=stefanha@redhat.com \
--cc=virtualization@lists.linux-foundation.org \
--cc=xieyongji@bytedance.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).