netdev - RE: [PATCH bpf v2 4/4] bpf: Fix documentation of th_len in bpf_tcp_{gen,check}

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Date:   Mon, 24 Jan 2022 23:09:11 -0800
From:   John Fastabend <john.fastabend@...il.com>
To:     Maxim Mikityanskiy <maximmi@...dia.com>, bpf@...r.kernel.org,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>, netdev@...r.kernel.org
Cc:     Tariq Toukan <tariqt@...dia.com>, Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Petar Penkov <ppenkov@...gle.com>,
        Lorenz Bauer <lmb@...udflare.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Maxim Mikityanskiy <maximmi@...dia.com>
Subject: RE: [PATCH bpf v2 4/4] bpf: Fix documentation of th_len in
 bpf_tcp_{gen,check}_syncookie

Maxim Mikityanskiy wrote:
> bpf_tcp_gen_syncookie and bpf_tcp_check_syncookie expect the full length
> of the TCP header (with all extensions). Fix the documentation that says
> it should be sizeof(struct tcphdr).
> 
> Fixes: 399040847084 ("bpf: add helper to check for a valid SYN cookie")
> Fixes: 70d66244317e ("bpf: add bpf_tcp_gen_syncookie helper")
> Signed-off-by: Maxim Mikityanskiy <maximmi@...dia.com>
> Reviewed-by: Tariq Toukan <tariqt@...dia.com>

Not sure I would push doc fixes at bpf tree, would be fine to go
through bpf-next. But change looks good.

Acked-by: John Fastabend <john.fastabend@...il.com>