[v6,0/4] virtio_net: Add the check for vdpa's mac address

Message

Cindy Lu April 8, 2025, 6:12 a.m. UTC

When using a VDPA device, it is important to ensure that the MAC address
is correctly set. In this patch series, we add a new parameter to
enable this check.
Only three MAC setup configurations are acceptable; any other will
fail to boot.

The usage is:
....
-netdev type=vhost-vdpa,vhostdev=/dev/vhost-vdpa-0,id=vhost-vdpa0,check-mac=true\
-device virtio-net-pci,netdev=vhost-vdpa0\
....

tested by ConnectX-6 Dx/vdpa_sim device

change in v3
1. add a new parameter to enable the check and keep the old behavior
2. adjust the comment and make it more clear

change in v4
1. change the new parameter's name to check-mac
2. change the comment and make it more clear

change in v5
1.These patches haven't been merged for a while, so I rebased
  them with the latest code and resubmitted

change in v6
1. Address comments
2. Rebase with the latest QEMU

Cindy Lu (4):
  vhost_vdpa : Add a new parameter to enable check mac address
  virtio_net: Add the check for vdpa's mac address
  virtio_net: Add second acceptable configuration for MAC setup
  virtio_net: Add third acceptable configuration for MAC setup.

 hw/net/virtio-net.c | 66 ++++++++++++++++++++++++++++++++++++++++++++-
 include/net/net.h   |  1 +
 net/vhost-vdpa.c    |  4 +++
 qapi/net.json       |  5 ++++
 4 files changed, 75 insertions(+), 1 deletion(-)