netdev - Re: [PATCH bpf] bpf: fix doc of bpf_skb_adjust

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Date:   Wed, 17 Oct 2018 21:49:01 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Nicolas Dichtel <nicolas.dichtel@...nd.com>
Cc:     ast@...nel.org, daniel@...earbox.net, davem@...emloft.net,
        netdev@...r.kernel.org,
        Quentin Monnet <quentin.monnet@...ronome.com>
Subject: Re: [PATCH bpf] bpf: fix doc of bpf_skb_adjust_room() in uapi

On Wed, Oct 17, 2018 at 04:24:48PM +0200, Nicolas Dichtel wrote:
> len_diff is signed.
> 
> Fixes: fa15601ab31e ("bpf: add documentation for eBPF helpers (33-41)")
> CC: Quentin Monnet <quentin.monnet@...ronome.com>
> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
> ---
>  include/uapi/linux/bpf.h       | 2 +-
>  tools/include/uapi/linux/bpf.h | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
> index 66917a4eba27..c4ffe91d5598 100644
> --- a/include/uapi/linux/bpf.h
> +++ b/include/uapi/linux/bpf.h
> @@ -1430,7 +1430,7 @@ union bpf_attr {
>   * 	Return
>   * 		0 on success, or a negative error in case of failure.
>   *
> - * int bpf_skb_adjust_room(struct sk_buff *skb, u32 len_diff, u32 mode, u64 flags)
> + * int bpf_skb_adjust_room(struct sk_buff *skb, s32 len_diff, u32 mode, u64 flags)

Thanks. Applied to bpf-next, since we're very late into release cycle.