netdev - Re: [xdp-hints] [PATCH bpf-next 9/9] xsk: document XDP_TX_METADATA

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Message-ID: <ZNUp18O6CqxegAog@google.com>
Date: Thu, 10 Aug 2023 11:17:59 -0700
From: Stanislav Fomichev <sdf@...gle.com>
To: Jesper Dangaard Brouer <hawk@...nel.org>
Cc: bpf@...r.kernel.org, ast@...nel.org, daniel@...earbox.net, 
	andrii@...nel.org, martin.lau@...ux.dev, song@...nel.org, yhs@...com, 
	john.fastabend@...il.com, kpsingh@...nel.org, haoluo@...gle.com, 
	jolsa@...nel.org, kuba@...nel.org, toke@...nel.org, willemb@...gle.com, 
	dsahern@...nel.org, magnus.karlsson@...el.com, bjorn@...nel.org, 
	maciej.fijalkowski@...el.com, netdev@...r.kernel.org, 
	xdp-hints@...-project.net
Subject: Re: [xdp-hints] [PATCH bpf-next 9/9] xsk: document
 XDP_TX_METADATA_LEN layout

On 08/09, Jesper Dangaard Brouer wrote:
> 
> On 09/08/2023 18.54, Stanislav Fomichev wrote:
> > +Example
> > +=======
> > +
> > +See ``tools/testing/selftests/bpf/xdp_hw_metadata.c`` for an example
> > +program that handles TX metadata. Also see https://github.com/fomichev/xskgen
> > +for a more bare-bones example.
> 
> Will you consider maintaining this AF_XDP example here:
>  https://github.com/xdp-project/bpf-examples
> 
> E..g. the kernels old samples/bpf/xdpsock program moved here:
>  https://github.com/xdp-project/bpf-examples/tree/master/AF_XDP-example

Sure, I can put it wherever. Didn't want to put into the kernel tree..
 
> --Jesper
> p.s. Compile fail for fomichev/xskgen on my system

What is it complaining about? It's very ad-hoc, doesn't user proper
libxsk and has super simple hard-coded make rules :-)