netdev - Re: [PATCH bpf-next] bpf: tcp: Fix unused function warnings

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <87fte4xot3.fsf@cloudflare.com>
Date:   Thu, 19 Mar 2020 18:00:24 +0100
From:   Jakub Sitnicki <jakub@...udflare.com>
To:     YueHaibing <yuehaibing@...wei.com>
Cc:     lmb@...udflare.com, daniel@...earbox.net, john.fastabend@...il.com,
        davem@...emloft.net, netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH bpf-next] bpf: tcp: Fix unused function warnings

On Thu, Mar 19, 2020 at 01:46 PM CET, YueHaibing wrote:
> If BPF_STREAM_PARSER is not set, gcc warns:
>
> net/ipv4/tcp_bpf.c:483:12: warning: 'tcp_bpf_sendpage' defined but not used [-Wunused-function]
> net/ipv4/tcp_bpf.c:395:12: warning: 'tcp_bpf_sendmsg' defined but not used [-Wunused-function]
> net/ipv4/tcp_bpf.c:13:13: warning: 'tcp_bpf_stream_read' defined but not used [-Wunused-function]
>
> Moves the unused functions into the #ifdef
>
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>
> ---

In addition to this fix, looks like tcp_bpf_recvmsg can be static and
also conditional on CONFIG_BPF_STREAM_PARSER.

Reviewed-by: Jakub Sitnicki <jakub@...udflare.com>