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bpftool: implement cgroup bpf operations

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This patch adds basic cgroup bpf operations to bpftool:
cgroup list, attach and detach commands.

Usage is described in the corresponding man pages,
and examples are provided.

Syntax:
$ bpftool cgroup list CGROUP
$ bpftool cgroup attach CGROUP ATTACH_TYPE PROG [ATTACH_FLAGS]
$ bpftool cgroup detach CGROUP ATTACH_TYPE PROG

Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Roman Gushchin
2017-12-13 15:18:54 +00:00
committed by Daniel Borkmann
parent 49a086c201
commit 5ccda64d38
7 changed files with 434 additions and 5 deletions
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3
tools/bpf/bpftool/main.c
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@ -85,7 +85,7 @@ static int do_help(int argc, char **argv)
" %s batch file FILE\n"
" %s version\n"
"\n"
" OBJECT := { prog | map }\n"
" OBJECT := { prog | map | cgroup }\n"
" " HELP_SPEC_OPTIONS "\n"
"",
bin_name, bin_name, bin_name);
@ -173,6 +173,7 @@ static const struct cmd cmds[] = {
{ "batch", do_batch },
{ "prog", do_prog },
{ "map", do_map },
{ "cgroup", do_cgroup },
{ "version", do_version },
{ 0 }
};