On Wed, Mar 26, 2025 at 09:19:33PM +0800, Cindy Lu wrote:
> For VDPA devices, Allow configurations where both the hardware MAC address
> and QEMU command line MAC address are zero.
>
> Signed-off-by: Cindy Lu <[email protected]>
> ---
> hw/net/virtio-net.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
> index 1fd0403d5d..d1f44850d5 100644
> --- a/hw/net/virtio-net.c
> +++ b/hw/net/virtio-net.c
> @@ -3782,6 +3782,19 @@ static bool virtio_net_check_vdpa_mac(NetClientState
> *nc, VirtIONet *n,
> return true;
> }
> }
> + /*
> + * 3.The hardware MAC address is 0,
> + * and the MAC address in the QEMU command line is also 0.
> + * In this situation, qemu will generate a random mac address
> + * QEMU will try to use CVQ/set_config to set this address to
> + * device
same comments. end sentences with a period.
> + */
> + if ((memcmp(&hwcfg.mac, &zero, sizeof(MACAddr)) == 0) &&
> + (memcmp(cmdline_mac, &zero, sizeof(MACAddr)) == 0)) {
> + memcpy(&n->mac[0], &n->nic_conf.macaddr, sizeof(n->mac));
> +
> + return true;
> + }
>
> error_setg(errp,
> "vDPA device's mac %02x:%02x:%02x:%02x:%02x:%02x"
> --
> 2.45.0
