netdev - Re: [PATCH net-next 5/8] inet: add dst4_mtu() and dst6

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Message-ID: <CAAVpQUB8fpy91APegCF3iibhWZbFdYuQQ_+wkWGCMWF1JYUvzg@mail.gmail.com>
Date: Fri, 30 Jan 2026 22:34:48 -0800
From: Kuniyuki Iwashima <kuniyu@...gle.com>
To: Eric Dumazet <edumazet@...gle.com>
Cc: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, David Ahern <dsahern@...nel.org>, 
	netdev@...r.kernel.org, eric.dumazet@...il.com
Subject: Re: [PATCH net-next 5/8] inet: add dst4_mtu() and dst6_mtu() helpers

On Fri, Jan 30, 2026 at 1:03 PM Eric Dumazet <edumazet@...gle.com> wrote:
>
> With CONFIG_MITIGATION_RETPOLINE=y dst_mtu() is a bit fat,
> because it is generic.
>
> Indeed, clang does not always inline it.
>
> Add dst4_mtu() and dst6_mtu() helpers for callers that
> expect either ipv4_mtu() or ip6_mtu() to be called.
>
> These helpers are always inlined.
>
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Reviewed-by: Kuniyuki Iwashima <kuniyu@...gle.com>