* [dpdk-dev] The virtio device mac is empty in vhostuser type.
@ 2017-11-09 3:24 ? ?
2017-11-10 5:44 ` Tan, Jianfeng
0 siblings, 1 reply; 2+ messages in thread
From: ? ? @ 2017-11-09 3:24 UTC (permalink / raw)
To: dev; +Cc: yuanhan.liu, huawei.xie
Hi,
When I attached a virtio device to ovs bridge in vhostuser type, the virtual port does not have the mac address.
After checked the dpdk code, I found the 'mac' which is the member of struct 'virtio_net' is empty.
It only been assigned in case VHOST_USER_SEND_RARP of function 'vhost_user_msg_handler'.
But the comments said VHOST_USER_SEND_RARP would be handled during VM migration.
Therefore I would like to ask when I launch the dpdk vhost-user program, how could I get the virtio NIC MAC address?
Thanks
________________________________
Best Regards,
Hering
heringlinux@outlook.com
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-dev] The virtio device mac is empty in vhostuser type.
2017-11-09 3:24 [dpdk-dev] The virtio device mac is empty in vhostuser type ? ?
@ 2017-11-10 5:44 ` Tan, Jianfeng
0 siblings, 0 replies; 2+ messages in thread
From: Tan, Jianfeng @ 2017-11-10 5:44 UTC (permalink / raw)
To: ? ?, dev; +Cc: yuanhan.liu, Xie, Huawei
Hi,
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of ? ?
> Sent: Thursday, November 9, 2017 11:24 AM
> To: dev
> Cc: yuanhan.liu; Xie, Huawei
> Subject: [dpdk-dev] The virtio device mac is empty in vhostuser type.
>
> Hi,
>
> When I attached a virtio device to ovs bridge in vhostuser type, the virtual
> port does not have the mac address.
> After checked the dpdk code, I found the 'mac' which is the member of
> struct 'virtio_net' is empty.
> It only been assigned in case VHOST_USER_SEND_RARP of function
> 'vhost_user_msg_handler'.
> But the comments said VHOST_USER_SEND_RARP would be handled during
> VM migration.
We can treat virtio and vhost as a back-to-back connected cable: virtio and vhost (pmd) have their own mac.
>
> Therefore I would like to ask when I launch the dpdk vhost-user program,
> how could I get the virtio NIC MAC address?
Usually, we do ARP learn on this vhost port to get the mac address of virtio.
Thanks,
Jianfeng
>
> Thanks
> ________________________________
> Best Regards,
> Hering
> heringlinux@outlook.com
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