linux-kernel - Re: [PATCH net-next v2] net: refactor ->ndo_bpf calls into dev_xdp

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Message-ID: <20240822083410.2edf979f@kernel.org>
Date: Thu, 22 Aug 2024 08:34:10 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Mina Almasry <almasrymina@...gle.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-hyperv@...r.kernel.org, bpf@...r.kernel.org, Jay Vosburgh
 <jv@...sburgh.net>, Andy Gospodarek <andy@...yhouse.net>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 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>, Jesper Dangaard Brouer <hawk@...nel.org>, John
 Fastabend <john.fastabend@...il.com>
Subject: Re: [PATCH net-next v2] net: refactor ->ndo_bpf calls into
 dev_xdp_propagate

On Thu, 22 Aug 2024 05:51:54 +0000 Mina Almasry wrote:
> When net devices propagate xdp configurations to slave devices,
> we will need to perform a memory provider check to ensure we're
> not binding xdp to a device using unreadable netmem.
> 
> Currently the ->ndo_bpf calls in a few places. 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.

LGTM! (if anyone is planning to review this please TAL, I'm thinking of
applying it a few hours before the full 24h period to let Mina post his
larger series today)