netdev - Re: [RFC PATCH v2 01/11] net: add netdev netlink api to bind dma-buf to a net device

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Date: Thu, 10 Aug 2023 09:04:59 -0700
From: "Samudrala, Sridhar" <sridhar.samudrala@...el.com>
To: Mina Almasry <almasrymina@...gle.com>, <netdev@...r.kernel.org>,
	<linux-media@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>
CC: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
	<edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, Jesper Dangaard Brouer <hawk@...nel.org>, "Ilias
 Apalodimas" <ilias.apalodimas@...aro.org>, Arnd Bergmann <arnd@...db.de>,
	David Ahern <dsahern@...nel.org>, Willem de Bruijn
	<willemdebruijn.kernel@...il.com>, Sumit Semwal <sumit.semwal@...aro.org>,
	Christian König <christian.koenig@....com>, Jason Gunthorpe
	<jgg@...pe.ca>, Hari Ramakrishnan <rharix@...gle.com>, Dan Williams
	<dan.j.williams@...el.com>, Andy Lutomirski <luto@...nel.org>,
	<stephen@...workplumber.org>, <sdf@...gle.com>, Amritha Nambiar
	<amritha.nambiar@...el.com>
Subject: Re: [RFC PATCH v2 01/11] net: add netdev netlink api to bind dma-buf
 to a net device



On 8/9/2023 6:57 PM, Mina Almasry wrote:
> API takes the dma-buf fd as input, and binds it to the netdevice. The
> user can specify the rx queue to bind the dma-buf to. The user should be
> able to bind the same dma-buf to multiple queues, but that is left as
> a (minor) TODO in this iteration.

To support binding dma-buf fd to multiple queues, can we extend/change 
this interface to bind dma-buf fd to a napi_id? Amritha is currently 
working on a patchset that exposes napi_id's and their association with 
the queues.

https://lore.kernel.org/netdev/169059098829.3736.381753570945338022.stgit@anambiarhost.jf.intel.com/