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/*
* iplink_bridge_slave.c Bridge slave 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.
*
* Authors: Jiri Pirko <jiri@resnulli.us>
*/
#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <linux/if_link.h>
#include <linux/if_bridge.h>
#include "rt_names.h"
#include "utils.h"
#include "ip_common.h"
static void print_explain(FILE *f)
{
fprintf(f,
"Usage: ... bridge_slave [ state STATE ] [ priority PRIO ] [cost COST ]\n"
" [ guard {on | off} ]\n"
" [ hairpin {on | off} ] \n"
" [ fastleave {on | off} ]\n"
" [ root_block {on | off} ]\n"
" [ learning {on | off} ]\n"
" [ flood {on | off} ]\n"
);
}
static void explain(void)
{
print_explain(stderr);
}
static const char *port_states[] = {
[BR_STATE_DISABLED] = "disabled",
[BR_STATE_LISTENING] = "listening",
[BR_STATE_LEARNING] = "learning",
[BR_STATE_FORWARDING] = "forwarding",
[BR_STATE_BLOCKING] = "blocking",
};
static void print_portstate(FILE *f, __u8 state)
{
if (state <= BR_STATE_BLOCKING)
fprintf(f, "state %s ", port_states[state]);
else
fprintf(f, "state (%d) ", state);
}
static void print_onoff(FILE *f, char *flag, __u8 val)
{
fprintf(f, "%s %s ", flag, val ? "on" : "off");
}
static void bridge_slave_print_opt(struct link_util *lu, FILE *f,
struct rtattr *tb[])
{
if (!tb)
return;
if (tb[IFLA_BRPORT_STATE])
print_portstate(f, rta_getattr_u8(tb[IFLA_BRPORT_STATE]));
if (tb[IFLA_BRPORT_PRIORITY])
fprintf(f, "priority %d ",
rta_getattr_u16(tb[IFLA_BRPORT_PRIORITY]));
if (tb[IFLA_BRPORT_COST])
fprintf(f, "cost %d ",
rta_getattr_u32(tb[IFLA_BRPORT_COST]));
if (tb[IFLA_BRPORT_MODE])
print_onoff(f, "hairpin",
rta_getattr_u8(tb[IFLA_BRPORT_MODE]));
if (tb[IFLA_BRPORT_GUARD])
print_onoff(f, "guard",
rta_getattr_u8(tb[IFLA_BRPORT_GUARD]));
if (tb[IFLA_BRPORT_PROTECT])
print_onoff(f, "root_block",
rta_getattr_u8(tb[IFLA_BRPORT_PROTECT]));
if (tb[IFLA_BRPORT_FAST_LEAVE])
print_onoff(f, "fastleave",
rta_getattr_u8(tb[IFLA_BRPORT_FAST_LEAVE]));
if (tb[IFLA_BRPORT_LEARNING])
print_onoff(f, "learning",
rta_getattr_u8(tb[IFLA_BRPORT_LEARNING]));
if (tb[IFLA_BRPORT_UNICAST_FLOOD])
print_onoff(f, "flood",
rta_getattr_u8(tb[IFLA_BRPORT_UNICAST_FLOOD]));
}
static void bridge_slave_parse_on_off(char *arg_name, char *arg_val,
struct nlmsghdr *n, int type)
{
__u8 val;
if (strcmp(arg_val, "on") == 0)
val = 1;
else if (strcmp(arg_val, "off") == 0)
val = 0;
else
invarg("should be \"on\" or \"off\"", arg_name);
addattr8(n, 1024, type, val);
}
static int bridge_slave_parse_opt(struct link_util *lu, int argc, char **argv,
struct nlmsghdr *n)
{
__u8 state;
__u16 priority;
__u32 cost;
while (argc > 0) {
if (matches(*argv, "state") == 0) {
NEXT_ARG();
if (get_u8(&state, *argv, 0))
invarg("state is invalid", *argv);
addattr8(n, 1024, IFLA_BRPORT_STATE, state);
} else if (matches(*argv, "priority") == 0) {
NEXT_ARG();
if (get_u16(&priority, *argv, 0))
invarg("priority is invalid", *argv);
addattr16(n, 1024, IFLA_BRPORT_PRIORITY, priority);
} else if (matches(*argv, "cost") == 0) {
NEXT_ARG();
if (get_u32(&cost, *argv, 0))
invarg("cost is invalid", *argv);
addattr32(n, 1024, IFLA_BRPORT_COST, cost);
} else if (matches(*argv, "hairpin") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("hairpin", *argv, n,
IFLA_BRPORT_MODE);
} else if (matches(*argv, "guard") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("guard", *argv, n,
IFLA_BRPORT_GUARD);
} else if (matches(*argv, "root_block") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("root_block", *argv, n,
IFLA_BRPORT_PROTECT);
} else if (matches(*argv, "fastleave") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("fastleave", *argv, n,
IFLA_BRPORT_FAST_LEAVE);
} else if (matches(*argv, "learning") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("learning", *argv, n,
IFLA_BRPORT_LEARNING);
} else if (matches(*argv, "flood") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("flood", *argv, n,
IFLA_BRPORT_UNICAST_FLOOD);
} else if (matches(*argv, "help") == 0) {
explain();
return -1;
} else {
fprintf(stderr, "bridge_slave: unknown option \"%s\"?\n",
*argv);
explain();
return -1;
}
argc--, argv++;
}
return 0;
}
static void bridge_slave_print_help(struct link_util *lu, int argc, char **argv,
FILE *f)
{
print_explain(f);
}
struct link_util bridge_slave_link_util = {
.id = "bridge",
.maxattr = IFLA_BRPORT_MAX,
.print_opt = bridge_slave_print_opt,
.parse_opt = bridge_slave_parse_opt,
.print_help = bridge_slave_print_help,
.slave = true,
};
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