mirror of
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git
synced 2024-11-17 06:53:26 +08:00
561e650eff
Allow to print particular link type usage by:
ip link help [TYPE]
Currently to print usage for some link type it is needed
to use the following way:
ip link { add | del | set } type TYPE help
Signed-off-by: Vadim Kochan <vadim4j@gmail.com>
106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
/*
|
|
* iplink_macvtap.c macvtap device support
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/socket.h>
|
|
#include <linux/if_link.h>
|
|
|
|
#include "rt_names.h"
|
|
#include "utils.h"
|
|
#include "ip_common.h"
|
|
|
|
static void print_explain(FILE *f)
|
|
{
|
|
fprintf(stderr,
|
|
"Usage: ... macvtap mode { private | vepa | bridge | passthru }\n"
|
|
);
|
|
}
|
|
|
|
static void explain(void)
|
|
{
|
|
print_explain(stderr);
|
|
}
|
|
|
|
static int mode_arg(const char *arg)
|
|
{
|
|
fprintf(stderr, "Error: argument of \"mode\" must be \"private\", "
|
|
"\"vepa\", \"bridge\" or \"passthru\", not \"%s\"\n", arg);
|
|
return -1;
|
|
}
|
|
|
|
static int macvtap_parse_opt(struct link_util *lu, int argc, char **argv,
|
|
struct nlmsghdr *n)
|
|
{
|
|
while (argc > 0) {
|
|
if (matches(*argv, "mode") == 0) {
|
|
__u32 mode = 0;
|
|
NEXT_ARG();
|
|
|
|
if (strcmp(*argv, "private") == 0)
|
|
mode = MACVLAN_MODE_PRIVATE;
|
|
else if (strcmp(*argv, "vepa") == 0)
|
|
mode = MACVLAN_MODE_VEPA;
|
|
else if (strcmp(*argv, "bridge") == 0)
|
|
mode = MACVLAN_MODE_BRIDGE;
|
|
else if (strcmp(*argv, "passthru") == 0)
|
|
mode = MACVLAN_MODE_PASSTHRU;
|
|
else
|
|
return mode_arg(*argv);
|
|
|
|
addattr32(n, 1024, IFLA_MACVLAN_MODE, mode);
|
|
} else if (matches(*argv, "help") == 0) {
|
|
explain();
|
|
return -1;
|
|
} else {
|
|
fprintf(stderr, "macvtap: unknown command \"%s\"?\n", *argv);
|
|
explain();
|
|
return -1;
|
|
}
|
|
argc--, argv++;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void macvtap_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
|
|
{
|
|
__u32 mode;
|
|
|
|
if (!tb)
|
|
return;
|
|
|
|
if (!tb[IFLA_MACVLAN_MODE] ||
|
|
RTA_PAYLOAD(tb[IFLA_MACVLAN_MODE]) < sizeof(__u32))
|
|
return;
|
|
|
|
mode = rta_getattr_u32(tb[IFLA_VLAN_ID]);
|
|
fprintf(f, " mode %s ",
|
|
mode == MACVLAN_MODE_PRIVATE ? "private"
|
|
: mode == MACVLAN_MODE_VEPA ? "vepa"
|
|
: mode == MACVLAN_MODE_BRIDGE ? "bridge"
|
|
: mode == MACVLAN_MODE_PASSTHRU ? "passthru"
|
|
: "unknown");
|
|
}
|
|
|
|
static void macvtap_print_help(struct link_util *lu, int argc, char **argv,
|
|
FILE *f)
|
|
{
|
|
print_explain(f);
|
|
}
|
|
|
|
struct link_util macvtap_link_util = {
|
|
.id = "macvtap",
|
|
.maxattr = IFLA_MACVLAN_MAX,
|
|
.parse_opt = macvtap_parse_opt,
|
|
.print_opt = macvtap_print_opt,
|
|
.print_help = macvtap_print_help,
|
|
};
|