]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
virtio_net: support rx queue resize
authorXuan Zhuo <xuanzhuo@linux.alibaba.com>
Mon, 1 Aug 2022 06:39:00 +0000 (14:39 +0800)
committerMichael S. Tsirkin <mst@redhat.com>
Thu, 11 Aug 2022 08:23:24 +0000 (04:23 -0400)
commit6a4763e268030362340bc3286560d44be15a7421
treed790cb00259f4e9e5874b246035680581395c289
parent6e345f8c7cd029ad3aaece15ad4425ac26e4eb63
virtio_net: support rx queue resize

This patch implements the resize function of the rx queues.
Based on this function, it is possible to modify the ring num of the
queue.

Includes fixup:

virtio_net: fix for stuck when change rx ring size with dev down

When dev is set to DOWN state, napi has been disabled, if we modify the
ring size at this time, we should not call napi_disable() again, which
will cause stuck.

And all operations are under the protection of rtnl_lock, so there is no
need to consider concurrency issues.

Message-Id: <20220801063902.129329-41-xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220811080258.79398-2-xuanzhuo@linux.alibaba.com>
Reported-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
drivers/net/virtio_net.c