linux-kernel - Re: [PATCH] netfilter: bpf: Only define get_proto_defrag

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Date:   Mon, 31 Jul 2023 17:53:29 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Daniel Xu <dxu@...uu.xyz>
Cc:     Jozsef Kadlecsik <kadlec@...filter.org>,
        "David S. Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Pablo Neira Ayuso <pablo@...filter.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Florian Westphal <fw@...len.de>,
        netfilter-devel <netfilter-devel@...r.kernel.org>,
        coreteam@...filter.org,
        Network Development <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] netfilter: bpf: Only define get_proto_defrag_hook() if necessary

On Mon, Jul 31, 2023 at 2:55 PM Daniel Xu <dxu@...uu.xyz> wrote:
>
> Before, we were getting this warning:
>
>   net/netfilter/nf_bpf_link.c:32:1: warning: 'get_proto_defrag_hook' defined but not used [-Wunused-function]
>
> Guard the definition with CONFIG_NF_DEFRAG_IPV[4|6].
>
> Fixes: 91721c2d02d3 ("netfilter: bpf: Support BPF_F_NETFILTER_IP_DEFRAG in netfilter link")

since that commit is in bpf-next only
please use [PATCH bpf-next] in the future to make sure BPF CI can test it.

I've applied it after manual testing, but very much prefer
the automation to do it for me.