linux-kernel - Re: [PATCH net-next] Name NICs based on vmbus offer and enable async probe by default

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Message-ID: <20190709164714.70774c92@hermes.lan>
Date:   Tue, 9 Jul 2019 16:47:14 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Haiyang Zhang <haiyangz@...rosoft.com>
Cc:     "sashal@...nel.org" <sashal@...nel.org>,
        "linux-hyperv@...r.kernel.org" <linux-hyperv@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        KY Srinivasan <kys@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        "olaf@...fle.de" <olaf@...fle.de>, vkuznets <vkuznets@...hat.com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next] Name NICs based on vmbus offer and enable
 async probe by default

On Tue, 9 Jul 2019 22:56:30 +0000
Haiyang Zhang <haiyangz@...rosoft.com> wrote:

> -				VRSS_CHANNEL_MAX);
> +	if (probe_type == PROBE_PREFER_ASYNCHRONOUS) {
> +		snprintf(name, IFNAMSIZ, "eth%d", dev->channel->dev_num);

What about PCI passthrough or VF devices that are also being probed and
consuming the ethN names.  Won't there be a collision?