netdev - Re: [PATCH bpf-next v3 3/7] samples/bpf: Convert XDP samples to libbpf usage

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Date:   Fri, 25 Jan 2019 18:53:48 +0100
From:   Maciej Fijałkowski 
        <maciejromanfijalkowski@...il.com>
To:     Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     daniel@...earbox.net, ast@...nel.org, netdev@...r.kernel.org,
        jakub.kicinski@...ronome.com
Subject: Re: [PATCH bpf-next v3 3/7] samples/bpf: Convert XDP samples to
 libbpf usage

On Fri, 25 Jan 2019 09:30:27 +0100
Jesper Dangaard Brouer <brouer@...hat.com> wrote:

> On Thu, 24 Jan 2019 22:47:43 +0100
> Maciej Fijalkowski <maciejromanfijalkowski@...il.com> wrote:
> 
> > From: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
> > 
> > Some of XDP samples that are attaching the bpf program to the interface
> > via libbpf's bpf_set_link_xdp_fd are still using the bpf_load.c for
> > loading and manipulating the ebpf program and maps. Convert them to do
> > this through libbpf usage and remove bpf_load from the picture.
> > 
> > While at it remove what looks like debug leftover in
> > xdp_redirect_map_user.c
> > 
> > In xdp_redirect_cpu, change the way that the program to be loaded onto
> > interface is chosen - user now needs to pass the program's section name
> > instead of the relative number. In case of typo print out the section
> > names to choose from.
> > 
> > Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
> > Reviewed-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
> > ---
> >  samples/bpf/Makefile                |   8 +-
> >  samples/bpf/xdp_redirect_cpu_user.c | 145
> > +++++++++++++++++++++++++----------- samples/bpf/xdp_redirect_map_user.c |
> > 47 ++++++++---- samples/bpf/xdp_redirect_user.c     |  44 ++++++++---
> >  samples/bpf/xdp_router_ipv4_user.c  |  75 +++++++++++++------
> >  samples/bpf/xdp_tx_iptunnel_user.c  |  37 ++++++---
> >  6 files changed, 253 insertions(+), 103 deletions(-)
> 
> Thanks a lot for converting sample/bpf programs to use libbpf.  It have
> been on my todo list for a very long time.
> 
> You didn't implement the matching of prog-names in a iproute2 like
> fashion, as I described, but the important part was converting this to
> libbpf, so I'll Ack this anyway.
>

I will post it as a follow-up patch once I'm done with this series and we got
this (hopefully) merged, if you don't mind.

> Acked-by: Jesper Dangaard Brouer <brouer@...hat.com>
>

Thank you!

> (I acked V1 just before... meant to ACK this V3)
>