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Date: Mon, 10 Jun 2013 19:10:41 +0100 From: Ben Hutchings <bhutchings@...arflare.com> To: <Narendra_K@...l.com> CC: <john.fastabend@...il.com>, <john.r.fastabend@...el.com>, <stephen@...workplumber.org>, <netdev@...r.kernel.org> Subject: Re: Generic interface to make physical port number used by a netdevice available to user space On Mon, 2013-06-10 at 10:54 -0700, Narendra_K@...l.com wrote: [...] > In the scenario of NIC partitions, universally unique identifier > generation may have to consider that, each NIC partition which maps to > a given physical port will have its own MAC address. (The SRIOV VF > network interfaces could probably use PF's MAC address). But > generation of a universally unique physport identifier would probably > be driver specific. Right, I agree this has to be driver-specific. > 2. Also, thinking about the default value for 'physport' , could it > be set to zero by default ? A possible interface could be > > 0 ==> driver did not to set the identifier > > 0 ==> driver successfully set the identifier I think a universally unique identifier would have to be a multibyte value like a MAC-48, EUI-64 or 128-bit UUID - not a simple number, and not a fixed length. The unset value would then have a *length* of zero. Ben. -- Ben Hutchings, Staff Engineer, Solarflare Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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