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Date: Mon, 4 Jul 2022 20:44:06 +0200 From: Jesper Dangaard Brouer <jbrouer@...hat.com> To: Magnus Karlsson <magnus.karlsson@...il.com>, Jesper Dangaard Brouer <jbrouer@...hat.com> Cc: brouer@...hat.com, "Karlsson, Magnus" <magnus.karlsson@...el.com>, Björn Töpel <bjorn@...nel.org>, Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, Network Development <netdev@...r.kernel.org>, "Fijalkowski, Maciej" <maciej.fijalkowski@...el.com>, Jonathan Lemon <jonathan.lemon@...il.com>, Andrii Nakryiko <andrii@...nel.org>, Jesper Dangaard Brouer <hawk@...nel.org>, Toke Høiland-Jørgensen <toke@...hat.com>, bpf <bpf@...r.kernel.org>, Xdp <xdp-newbies@...r.kernel.org> Subject: Re: [PATCH bpf-next] selftests, bpf: remove AF_XDP samples On 30/06/2022 16.20, Magnus Karlsson wrote: > On Thu, Jun 30, 2022 at 3:44 PM Jesper Dangaard Brouer > <jbrouer@...hat.com> wrote: >> >> >> On 30/06/2022 11.37, Magnus Karlsson wrote: >>> From: Magnus Karlsson <magnus.karlsson@...el.com> >>> >>> Remove the AF_XDP samples from samples/bpf as they are dependent on >>> the AF_XDP support in libbpf. This support has now been removed in the >>> 1.0 release, so these samples cannot be compiled anymore. Please start >>> to use libxdp instead. It is backwards compatible with the AF_XDP >>> support that was offered in libbpf. New samples can be found in the >>> various xdp-project repositories connected to libxdp and by googling. >>> >>> Signed-off-by: Magnus Karlsson <magnus.karlsson@...el.com> >> >> Will you (or Maciej) be submitting these samples to XDP-tools[1] which >> is the current home for libxdp or maybe BPF-examples[2] ? >> >> [1] https://github.com/xdp-project/xdp-tools >> [2] https://github.com/xdp-project/bpf-examples >> >> I know Toke is ready to take over maintaining these, but we will >> appreciate someone to open a PR with this code... >> >>> --- >>> MAINTAINERS | 2 - >>> samples/bpf/Makefile | 9 - >>> samples/bpf/xdpsock.h | 19 - >>> samples/bpf/xdpsock_ctrl_proc.c | 190 --- >>> samples/bpf/xdpsock_kern.c | 24 - >>> samples/bpf/xdpsock_user.c | 2019 ------------------------------- >>> samples/bpf/xsk_fwd.c | 1085 ----------------- >> >> The code in samples/bpf/xsk_fwd.c is interesting, because it contains a >> buffer memory manager, something I've seen people struggle with getting >> right and performant (at the same time). > > I can push xsk_fwd to BPF-examples. Though I do think that xdpsock has > become way too big to serve as a sample. It slowly turned into a catch > all demonstrating every single feature of AF_XDP. We need a minimal > example and then likely other samples for other features that should > be demoed. So I suggest that xdpsock dies here and we start over with > something minimal and use xsk_fwd for the forwarding and mempool > example. I trust that we in bpf-examples[0] will see a PR with this from you/Intel, so: Acked-by: Jesper Dangaard Brouer <brouer@...hat.com> > Toke, I think you told me at Recipes in Paris that someone from RedHat > was working on an example. Did I remember correctly? > >> You can get my ACK if someone commits to port this to [1] or [2], or a >> 3rd place that have someone what will maintain this in the future. >> [0] https://github.com/xdp-project/bpf-examples/
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