2023-01-23 12:01:32

by Laurent Vivier

[permalink] [raw]
Subject: [PATCH v2 0/1] virtio_net: vdpa: update MAC address when it is generated by virtio-net

When the MAC address is not provided by the vdpa device virtio_net
driver assigns a random one without notifying the device.
The consequence, in the case of mlx5_vdpa, is the internal routing
tables of the device are not updated and this can block the
communication between two namespaces.

To fix this problem, use virtnet_send_command(VIRTIO_NET_CTRL_MAC)
to set the address from virtnet_probe() when the MAC address is
not provided by the device.

v2:
- remove vdpa_sim related fixes
- check virtio_has_feature(vdev, VIRTIO_NET_F_MAC) rather than
addr_assign_type

Laurent Vivier (1):
virtio_net: notify MAC address change on device initialization

drivers/net/virtio_net.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)

--
2.39.0