Re: [PATCH net-next, 3/3] hv_netvsc: Name NICs based on vmbus offer sequence and use async probe

[Stephen Hemminger]

On Sat, 28 Dec 2019 15:46:33 -0800
Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> wrote:

> -	net = alloc_etherdev_mq(sizeof(struct net_device_context),
> -				VRSS_CHANNEL_MAX);
> +	snprintf(name, IFNAMSIZ, "eth%d", dev->channel->dev_num);
> +	net = alloc_netdev_mqs(sizeof(struct net_device_context), name,
> +			       NET_NAME_ENUM, ether_setup,
> +			       VRSS_CHANNEL_MAX, VRSS_CHANNEL_MAX);
> +

Naming is a hard problem, and best left to userspace.
By choosing ethN as a naming policy, you potentially run into naming
conflicts with other non netvsc devices like those passed through or
SR-IOV devices.

Better to have udev use dev_num and use something like envN or something.
Udev also handles SRIOV devices in later versions.

Fighting against systemd, netplan, etc is not going to be make friends.