netdev - Re: [PATCH bpf] bpf: refer to struct xdp

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Date:   Thu, 20 Aug 2020 16:16:47 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Jakub Kicinski <kuba@...nel.org>, bpf@...r.kernel.org
Cc:     netdev@...r.kernel.org, yhs@...com
Subject: Re: [PATCH bpf] bpf: refer to struct xdp_md in user space comments

On 8/19/20 9:27 PM, Jakub Kicinski wrote:
> uAPI uses xdp_md, not xdp_buff. Fix comments.
> 
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> ---
>   include/uapi/linux/bpf.h | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
> index 0480f893facd..cc3553a102d0 100644
> --- a/include/uapi/linux/bpf.h
> +++ b/include/uapi/linux/bpf.h
> @@ -1554,7 +1554,7 @@ union bpf_attr {

Needs also tooling header copy, but once that is done, it needs fixup for libbpf:

[root@...9 bpf]# make
   GEN      bpf_helper_defs.h
Unrecognized type 'struct xdp_md', please add it to known types!
make[1]: *** [Makefile:186: bpf_helper_defs.h] Error 1
make[1]: *** Deleting file 'bpf_helper_defs.h'
make: *** [Makefile:160: all] Error 2
[root@...9 bpf]#

Pls fix up and send v2, thanks.
Daniel