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d0fe92fb5e
Dump protocol family, hook and priority value:
$ bpftool link
2: netfilter prog 14
ip input prio -128
pids install(3264)
5: netfilter prog 14
ip6 forward prio 21
pids a.out(3387)
9: netfilter prog 14
ip prerouting prio 123
pids a.out(5700)
10: netfilter prog 14
ip input prio 21
pids test2(5701)
v2: Quentin Monnet suggested to also add 'bpftool net' support:
$ bpftool net
xdp:
tc:
flow_dissector:
netfilter:
ip prerouting prio 21 prog_id 14
ip input prio -128 prog_id 14
ip input prio 21 prog_id 14
ip forward prio 21 prog_id 14
ip output prio 21 prog_id 14
ip postrouting prio 21 prog_id 14
'bpftool net' only dumps netfilter link type, links are sorted by protocol
family, hook and priority.
v5: fix bpf ci failure: libbpf needs small update to prog_type_name[]
and probe_prog_load helper.
v4: don't fail with -EOPNOTSUPP in libbpf probe_prog_load, update
prog_type_name[] with "netfilter" entry (bpf ci)
v3: fix bpf.h copy, 'reserved' member was removed (Alexei)
use p_err, not fprintf (Quentin)
Suggested-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/eeeaac99-9053-90c2-aa33-cc1ecb1ae9ca@isovalent.com/
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://lore.kernel.org/r/20230421170300.24115-6-fw@strlen.de
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.