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Commit 821cfbb0 authored by Quentin Monnet's avatar Quentin Monnet Committed by David S. Miller
Browse files

tools: bpftool: add a command to display bpftool version 



This command can be used to print the version of the tool, which is in
fact the version from Linux taken from usr/include/linux/version.h.

Example usage:

    $ bpftool version
    bpftool v4.14.0

Signed-off-by: default avatarQuentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8dfbc6d1

tools/bpf/bpftool/Documentation/bpftool.rst

+2 −0
Original line number Diff line number Diff line
@@ -14,6 +14,8 @@ SYNOPSIS 


	**bpftool** batch file *FILE*



	**bpftool** version



	*OBJECT* := { **map** | **program** }



	*MAP-COMMANDS* :=

tools/bpf/bpftool/main.c

+13 −1
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include <ctype.h>

#include <errno.h>

#include <linux/bpf.h>

#include <linux/version.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>
@@ -62,13 +63,23 @@ static int do_help(int argc, char **argv) 
	fprintf(stderr,

		"Usage: %s OBJECT { COMMAND | help }\n"

		"       %s batch file FILE\n"

		"       %s version\n"

		"\n"

		"       OBJECT := { prog | map }\n",

		bin_name, bin_name);

		bin_name, bin_name, bin_name);



	return 0;

}



static int do_version(int argc, char **argv)

{

	printf("%s v%d.%d.%d\n", bin_name,

	       LINUX_VERSION_CODE >> 16,

	       LINUX_VERSION_CODE >> 8 & 0xf,

	       LINUX_VERSION_CODE & 0xf);

	return 0;

}



int cmd_select(const struct cmd *cmds, int argc, char **argv,

	       int (*help)(int argc, char **argv))

{
@@ -128,6 +139,7 @@ static const struct cmd cmds[] = { 
	{ "batch",	do_batch },

	{ "prog",	do_prog },

	{ "map",	do_map },

	{ "version",	do_version },

	{ 0 }

};