From: KaFai Wan <kafai.wan@linux.dev>
To: Martin KaFai Lau <martin.lau@linux.dev>
Cc: daniel@iogearbox.net, john.fastabend@gmail.com, sdf@fomichev.me,
ast@kernel.org, andrii@kernel.org, eddyz87@gmail.com,
memxor@gmail.com, song@kernel.org, yonghong.song@linux.dev,
jolsa@kernel.org, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org, pabeni@redhat.com, horms@kernel.org,
shuah@kernel.org, jiayuan.chen@linux.dev, bpf@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org,
Quan Sun <2022090917019@std.uestc.edu.cn>,
Yinhao Hu <dddddd@hust.edu.cn>,
Kaiyan Mei <M202472210@hust.edu.cn>
Subject: Re: [PATCH bpf v2 1/2] bpf: Reject TCP_NODELAY in TCP header option callbacks
Date: Fri, 17 Apr 2026 09:35:14 +0800 [thread overview]
Message-ID: <f1b20180cc6127b990e5f83face4ca77bab49e89.camel@linux.dev> (raw)
In-Reply-To: <2026416172759.GIuu.martin.lau@linux.dev>
On Thu, 2026-04-16 at 10:35 -0700, Martin KaFai Lau wrote:
> On Thu, Apr 16, 2026 at 07:23:07PM +0800, KaFai Wan wrote:
> > diff --git a/net/core/filter.c b/net/core/filter.c
> > index fcfcb72663ca..911ff04bca5a 100644
> > --- a/net/core/filter.c
> > +++ b/net/core/filter.c
> > @@ -5833,6 +5833,11 @@ BPF_CALL_5(bpf_sock_ops_setsockopt, struct bpf_sock_ops_kern *, bpf_sock,
> > if (!is_locked_tcp_sock_ops(bpf_sock))
> > return -EOPNOTSUPP;
> >
> > + if ((bpf_sock->op == BPF_SOCK_OPS_HDR_OPT_LEN_CB ||
> > + bpf_sock->op == BPF_SOCK_OPS_WRITE_HDR_OPT_CB) &&
> > + IS_ENABLED(CONFIG_INET) && level == SOL_TCP && optname == TCP_NODELAY)
>
> IS_ENABLED(CONFIG_INET) is unnecessary.
ok, will remove in next version.
>
> pw-bot: cr
>
> > + return -EOPNOTSUPP;
> > +
> > return _bpf_setsockopt(bpf_sock->sk, level, optname, optval, optlen);
> > }
> >
> > --
> > 2.43.0
> >
--
Thanks,
KaFai
next prev parent reply other threads:[~2026-04-17 1:35 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-16 11:23 [PATCH bpf v2 0/2] bpf: Reject TCP_NODELAY in TCP header option callbacks KaFai Wan
2026-04-16 11:23 ` [PATCH bpf v2 1/2] " KaFai Wan
2026-04-16 17:35 ` Martin KaFai Lau
2026-04-17 1:35 ` KaFai Wan [this message]
2026-04-17 2:43 ` Jiayuan Chen
2026-04-17 9:27 ` KaFai Wan
2026-04-16 11:23 ` [PATCH bpf v2 2/2] selftests/bpf: Test TCP_NODELAY in TCP hdr opt callbacks KaFai Wan
2026-04-16 19:06 ` Martin KaFai Lau
2026-04-17 3:07 ` KaFai Wan
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