netdev - Re: [PATCH net-next 1/2] rtnetlink: change rtnl_stats

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Message-ID: <CANn89iKPSp9_bZAZpFM4biEg7vFXxMmY2nQfEmTfLsiHGdBTxg@mail.gmail.com>
Date: Thu, 2 May 2024 18:03:39 +0200
From: Eric Dumazet <edumazet@...gle.com>
To: David Ahern <dsahern@...nel.org>
Cc: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org, eric.dumazet@...il.com, 
	Ido Schimmel <idosch@...dia.com>, Jiri Pirko <jiri@...dia.com>
Subject: Re: [PATCH net-next 1/2] rtnetlink: change rtnl_stats_dump() return value

On Thu, May 2, 2024 at 5:59 PM David Ahern <dsahern@...nel.org> wrote:
>
> On 5/2/24 5:37 AM, Eric Dumazet wrote:
> > By returning 0 (or an error) instead of skb->len,
> > we allow NLMSG_DONE to be appended to the current
> > skb at the end of a dump, saving a couple of recvmsg()
> > system calls.
>
> any concern that a patch similar to:
> https://lore.kernel.org/netdev/20240411180202.399246-1-kuba@kernel.org/
> will be needed again here?

This has been discussed, Jakub answer was :

https://lore.kernel.org/netdev/20240411115748.05faa636@kernel.org/

So the plan is to change functions until a regression is reported.