linux-kernel - Re: [PATCH] netfilter: bpf_link: avoid unused-function warning

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Message-ID: <ewu46co43ldtnsedbaqvs4ihpebr7wxjbpum32iq4i766egpyu@bzocmghr636q>
Date:   Tue, 1 Aug 2023 13:29:01 -0600
From:   Daniel Xu <dxu@...uu.xyz>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Arnd Bergmann <arnd@...nel.org>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        Netdev <netdev@...r.kernel.org>, linux-kernel@...r.kernel.org,
        bpf@...r.kernel.org
Subject: Re: [PATCH] netfilter: bpf_link: avoid unused-function warning

On Tue, Aug 01, 2023 at 07:27:33PM +0200, Arnd Bergmann wrote:
> On Tue, Aug 1, 2023, at 17:20, Daniel Xu wrote:
> > Hi Arnd,
> >
> > On Tue, Aug 01, 2023 at 05:02:41PM +0200, Arnd Bergmann wrote:
> >> From: Arnd Bergmann <arnd@...db.de>
> >> 
> >> The newly added function is unused in some random configurations:
> >> 
> >> net/netfilter/nf_bpf_link.c:32:1: error: 'get_proto_defrag_hook' defined but not used [-Werror=unused-function]
> >>    32 | get_proto_defrag_hook(struct bpf_nf_link *link,
> >>       | ^~~~~~~~~~~~~~~~~~~~~
> >> 
> >
> > This was fixed in 81584c23f249 ("netfilter: bpf: Only define 
> > get_proto_defrag_hook() if necessary").
> 
> Ok, I guess this will be in tomorrow's linux-next then, right?
> 
>     Arnd

I'm not too familiar with the linux-next process, but chatgpt is telling
me it should be.

Thanks,
Daniel