On Wed, 27 Sep 2017 12:45:11 +0200, Jesper Dangaard Brouer wrote:
> On Wed, 27 Sep 2017 00:02:08 +0100
> Jakub Kicinski <jakub.kicin...@netronome.com> wrote:
>
> > On Tue, 26 Sep 2017 15:24:06 -0700, Alexei Starovoitov wrote:
> > > On Tue, Sep 26, 2017 at 08:35:22AM -0700, Jakub Kicinski wrote:
> > > > Add a simple tool for querying and updating BPF objects on the system.
> > > >
> > > > Signed-off-by: Jakub Kicinski <jakub.kicin...@netronome.com>
> > > > Reviewed-by: Simon Horman <simon.hor...@netronome.com>
> [...]
> > > > tools/bpf/Makefile | 18 +-
> > > > tools/bpf/bpftool/Makefile | 80 +++++
> > > > tools/bpf/bpftool/common.c | 214 ++++++++++++
> > > > tools/bpf/bpftool/jit_disasm.c | 83 +++++
> > > > tools/bpf/bpftool/main.c | 212 ++++++++++++
> > > > tools/bpf/bpftool/main.h | 99 ++++++
> > > > tools/bpf/bpftool/map.c | 742
> > > > +++++++++++++++++++++++++++++++++++++++++
> > > > tools/bpf/bpftool/prog.c | 392 ++++++++++++++++++++++
> > > > 8 files changed, 1837 insertions(+), 3 deletions(-)
> > > ...
> > > > +static int do_help(int argc, char **argv)
> > > > +{
> > > > + fprintf(stderr,
> > > > + "Usage: %s %s show [MAP]\n"
> > > > + " %s %s dump MAP\n"
> > > > + " %s %s update MAP key BYTES value VALUE
> > > > [UPDATE_FLAGS]\n"
> > > > + " %s %s lookup MAP key BYTES\n"
> > > > + " %s %s getnext MAP [key BYTES]\n"
> > > > + " %s %s delete MAP key BYTES\n"
> > > > + " %s %s pin MAP FILE\n"
> > > > + " %s %s help\n"
> > > > + "\n"
> > > > + " MAP := { id MAP_ID | pinned FILE }\n"
> > > > + " " HELP_SPEC_PROGRAM "\n"
> > > > + " VALUE := { BYTES | MAP | PROG }\n"
> > > > + " UPDATE_FLAGS := { any | exist | noexist }\n"
> > > > + "",
> > >
> > > overall looks good to me, but still difficult to grasp how to use it.
> > > Can you add README with example usage and expected output?
> >
> > I have a README on GitHub, but I was thinking about perhaps writing a
> > proper man page? Do you prefer one over the other?
>
> I would prefer adding a README.rst file, in RST-format, as the rest of
> the kernel documentation is moving in that direction[1] (your github
> version is in README.md format). A man page will always be
> out-of-sync, and even out-of-sync on different distros.
>
> See[1]: https://www.kernel.org/doc/html/latest/
>
> And then I would find some place in Documentation/admin-guide/ and
> include the README.rst file, so it shows up at [1].
>
> RST have an include method like:
>
> .. include:: ../../tools/bpf/bpftool/README.rst
Can the docs in new format be rendered into a man page? Call me old
fashioned but I think we should provide some form of a man page.. :)
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