netdev - Re: [RFC PATCH v3 04/12] netdev: support binding dma-buf to netdevice

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Date: Fri, 10 Nov 2023 15:19:53 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Mina Almasry <almasrymina@...gle.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arch@...r.kernel.org, linux-kselftest@...r.kernel.org,
 linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 linaro-mm-sig@...ts.linaro.org, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, 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>,
 Shuah Khan <shuah@...nel.org>, Sumit Semwal <sumit.semwal@...aro.org>,
 "Christian König" <christian.koenig@....com>, Shakeel Butt
 <shakeelb@...gle.com>, Jeroen de Borst <jeroendb@...gle.com>, Praveen
 Kaligineedi <pkaligineedi@...gle.com>, Willem de Bruijn
 <willemb@...gle.com>, Kaiyuan Zhang <kaiyuanz@...gle.com>
Subject: Re: [RFC PATCH v3 04/12] netdev: support binding dma-buf to
 netdevice

On Sun,  5 Nov 2023 18:44:03 -0800 Mina Almasry wrote:
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -52,6 +52,8 @@
>  #include <net/net_trackers.h>
>  #include <net/net_debug.h>
>  #include <net/dropreason-core.h>
> +#include <linux/xarray.h>
> +#include <linux/refcount.h>
>  
>  struct netpoll_info;
>  struct device;
> @@ -808,6 +810,84 @@ bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index, u32 flow_id,
>  #endif
>  #endif /* CONFIG_RPS */
>  
> +struct netdev_dmabuf_binding {

Similar nitpick to the skbuff.h comment. Take this somewhere else,
please, it doesn't need to be included in netdevice.h

> +	struct netdev_dmabuf_binding *rbinding;

the 'r' in rbinding stands for rx? 🤔️