linux-kernel - Re: [PATCH net-next v21] net: refactor ->ndo_bpf calls into dev_xdp

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Message-ID: <CAHS8izMyAxw8DyG11b6h17ghU6Xa-be-C7tDOvGCjkCJ1bZDKw@mail.gmail.com>
Date: Wed, 21 Aug 2024 01:24:12 -0400
From: Mina Almasry <almasrymina@...gle.com>
To: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-hyperv@...r.kernel.org, bpf@...r.kernel.org
Cc: Jay Vosburgh <jv@...sburgh.net>, Andy Gospodarek <andy@...yhouse.net>, 
	"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	"K. Y. Srinivasan" <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>, Wei Liu <wei.liu@...nel.org>, 
	Dexuan Cui <decui@...rosoft.com>, Alexei Starovoitov <ast@...nel.org>, 
	Daniel Borkmann <daniel@...earbox.net>, Andrii Nakryiko <andrii@...nel.org>, 
	Martin KaFai Lau <martin.lau@...ux.dev>, Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
	Yonghong Song <yonghong.song@...ux.dev>, John Fastabend <john.fastabend@...il.com>, 
	KP Singh <kpsingh@...nel.org>, Stanislav Fomichev <sdf@...ichev.me>, Hao Luo <haoluo@...gle.com>, 
	Jiri Olsa <jolsa@...nel.org>, Björn Töpel <bjorn@...nel.org>, 
	Magnus Karlsson <magnus.karlsson@...el.com>, 
	Maciej Fijalkowski <maciej.fijalkowski@...el.com>, Jonathan Lemon <jonathan.lemon@...il.com>, 
	Jesper Dangaard Brouer <hawk@...nel.org>
Subject: Re: [PATCH net-next v21] net: refactor ->ndo_bpf calls into dev_xdp_propagate

On Wed, Aug 21, 2024 at 12:56 AM Mina Almasry <almasrymina@...gle.com> wrote:
>
> When net devices propagate xdp configurations to slave devices, or when
> core propagates xdp configuration to a device, we will need to perform
> a memory provider check to ensure we're not binding xdp to a device
> using unreadable netmem.
>
> Currently ->ndo_bpf calls are all over the place. Adding checks to all
> these places would not be ideal.
>
> Refactor all the ->ndo_bpf calls into one place where we can add this
> check in the future.
>
> Suggested-by: Jakub Kicinski <kuba@...nel.org>
> Signed-off-by: Mina Almasry <almasrymina@...gle.com>

Sorry the patch title should just be:

[PATCH net-next v1] net: refactor ->ndo_bpf calls into dev_xdp_propagate

v1, not v21.