/*
* 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 [ fdb_flush ]\n"
" [ state STATE ]\n"
" [ priority PRIO ]\n"
" [ 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"
" [ proxy_arp {on | off} ]\n"
" [ proxy_arp_wifi {on | off} ]\n"
" [ mcast_router MULTICAST_ROUTER ]\n"
" [ mcast_fast_leave {on | off} ]\n"
" [ mcast_flood {on | off} ]\n"
" [ mcast_to_unicast {on | off} ]\n"
" [ group_fwd_mask MASK ]\n"
" [ neigh_suppress {on | off} ]\n"
" [ vlan_tunnel {on | off} ]\n"
" [ isolated {on | off} ]\n"
" [ backup_port DEVICE ] [ nobackup_port ]\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 const char *fwd_mask_tbl[16] = {
[0] = "stp",
[2] = "lacp",
[14] = "lldp"
};
static void print_portstate(FILE *f, __u8 state)
{
if (state <= BR_STATE_BLOCKING)
print_string(PRINT_ANY,
"state",
"state %s ",
port_states[state]);
else
print_int(PRINT_ANY, "state_index", "state (%d) ", state);
}
static void _print_onoff(FILE *f, char *json_flag, char *flag, __u8 val)
{
if (is_json_context())
print_bool(PRINT_JSON, flag, NULL, val);
else
fprintf(f, "%s %s ", flag, val ? "on" : "off");
}
static void _print_timer(FILE *f, const char *attr, struct rtattr *timer)
{
struct timeval tv;
__jiffies_to_tv(&tv, rta_getattr_u64(timer));
if (is_json_context()) {
json_writer_t *jw = get_json_writer();
jsonw_name(jw, attr);
jsonw_printf(jw, "%i.%.2i",
(int)tv.tv_sec, (int)tv.tv_usec / 10000);
} else {
fprintf(f, "%s %4i.%.2i ", attr, (int)tv.tv_sec,
(int)tv.tv_usec / 10000);
}
}
static void _bitmask2str(__u16 bitmask, char *dst, size_t dst_size,
const char **tbl)
{
int len, i;
for (i = 0, len = 0; bitmask; i++, bitmask >>= 1) {
if (bitmask & 0x1) {
if (tbl[i])
len += snprintf(dst + len, dst_size - len, "%s,",
tbl[i]);
else
len += snprintf(dst + len, dst_size - len, "0x%x,",
(1 << i));
}
}
if (!len)
snprintf(dst, dst_size, "0x0");
else
dst[len - 1] = 0;
}
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])
print_int(PRINT_ANY,
"priority",
"priority %d ",
rta_getattr_u16(tb[IFLA_BRPORT_PRIORITY]));
if (tb[IFLA_BRPORT_COST])
print_int(PRINT_ANY,
"cost",
"cost %d ",
rta_getattr_u32(tb[IFLA_BRPORT_COST]));
if (tb[IFLA_BRPORT_MODE])
_print_onoff(f, "mode", "hairpin",
rta_getattr_u8(tb[IFLA_BRPORT_MODE]));
if (tb[IFLA_BRPORT_GUARD])
_print_onoff(f, "guard", "guard",
rta_getattr_u8(tb[IFLA_BRPORT_GUARD]));
if (tb[IFLA_BRPORT_PROTECT])
_print_onoff(f, "protect", "root_block",
rta_getattr_u8(tb[IFLA_BRPORT_PROTECT]));
if (tb[IFLA_BRPORT_FAST_LEAVE])
_print_onoff(f, "fast_leave", "fastleave",
rta_getattr_u8(tb[IFLA_BRPORT_FAST_LEAVE]));
if (tb[IFLA_BRPORT_LEARNING])
_print_onoff(f, "learning", "learning",
rta_getattr_u8(tb[IFLA_BRPORT_LEARNING]));
if (tb[IFLA_BRPORT_UNICAST_FLOOD])
_print_onoff(f, "unicast_flood", "flood",
rta_getattr_u8(tb[IFLA_BRPORT_UNICAST_FLOOD]));
if (tb[IFLA_BRPORT_ID])
print_0xhex(PRINT_ANY, "id", "port_id %#llx ",
rta_getattr_u16(tb[IFLA_BRPORT_ID]));
if (tb[IFLA_BRPORT_NO])
print_0xhex(PRINT_ANY, "no", "port_no %#llx ",
rta_getattr_u16(tb[IFLA_BRPORT_NO]));
if (tb[IFLA_BRPORT_DESIGNATED_PORT])
print_uint(PRINT_ANY,
"designated_port",
"designated_port %u ",
rta_getattr_u16(tb[IFLA_BRPORT_DESIGNATED_PORT]));
if (tb[IFLA_BRPORT_DESIGNATED_COST])
print_uint(PRINT_ANY,
"designated_cost",
"designated_cost %u ",
rta_getattr_u16(tb[IFLA_BRPORT_DESIGNATED_COST]));
if (tb[IFLA_BRPORT_BRIDGE_ID]) {
char bridge_id[32];
br_dump_bridge_id(RTA_DATA(tb[IFLA_BRPORT_BRIDGE_ID]),
bridge_id, sizeof(bridge_id));
print_string(PRINT_ANY,
"bridge_id",
"designated_bridge %s ",
bridge_id);
}
if (tb[IFLA_BRPORT_ROOT_ID]) {
char root_id[32];
br_dump_bridge_id(RTA_DATA(tb[IFLA_BRPORT_ROOT_ID]),
root_id, sizeof(root_id));
print_string(PRINT_ANY,
"root_id",
"designated_root %s ", root_id);
}
if (tb[IFLA_BRPORT_HOLD_TIMER])
_print_timer(f, "hold_timer", tb[IFLA_BRPORT_HOLD_TIMER]);
if (tb[IFLA_BRPORT_MESSAGE_AGE_TIMER])
_print_timer(f, "message_age_timer",
tb[IFLA_BRPORT_MESSAGE_AGE_TIMER]);
if (tb[IFLA_BRPORT_FORWARD_DELAY_TIMER])
_print_timer(f, "forward_delay_timer",
tb[IFLA_BRPORT_FORWARD_DELAY_TIMER]);
if (tb[IFLA_BRPORT_TOPOLOGY_CHANGE_ACK])
print_uint(PRINT_ANY,
"topology_change_ack",
"topology_change_ack %u ",
rta_getattr_u8(tb[IFLA_BRPORT_TOPOLOGY_CHANGE_ACK]));
if (tb[IFLA_BRPORT_CONFIG_PENDING])
print_uint(PRINT_ANY,
"config_pending",
"config_pending %u ",
rta_getattr_u8(tb[IFLA_BRPORT_CONFIG_PENDING]));
if (tb[IFLA_BRPORT_PROXYARP])
_print_onoff(f, "proxyarp", "proxy_arp",
rta_getattr_u8(tb[IFLA_BRPORT_PROXYARP]));
if (tb[IFLA_BRPORT_PROXYARP_WIFI])
_print_onoff(f, "proxyarp_wifi", "proxy_arp_wifi",
rta_getattr_u8(tb[IFLA_BRPORT_PROXYARP_WIFI]));
if (tb[IFLA_BRPORT_MULTICAST_ROUTER])
print_uint(PRINT_ANY,
"multicast_router",
"mcast_router %u ",
rta_getattr_u8(tb[IFLA_BRPORT_MULTICAST_ROUTER]));
if (tb[IFLA_BRPORT_FAST_LEAVE])
// not printing any json here because
// we already printed fast_leave before
print_string(PRINT_FP,
NULL,
"mcast_fast_leave %s ",
rta_getattr_u8(tb[IFLA_BRPORT_FAST_LEAVE]) ? "on" : "off");
if (tb[IFLA_BRPORT_MCAST_FLOOD])
_print_onoff(f, "mcast_flood", "mcast_flood",
rta_getattr_u8(tb[IFLA_BRPORT_MCAST_FLOOD]));
if (tb[IFLA_BRPORT_MCAST_TO_UCAST])
_print_onoff(f, "mcast_to_unicast", "mcast_to_unicast",
rta_getattr_u8(tb[IFLA_BRPORT_MCAST_TO_UCAST]));
if (tb[IFLA_BRPORT_NEIGH_SUPPRESS])
_print_onoff(f, "neigh_suppress", "neigh_suppress",
rta_getattr_u8(tb[IFLA_BRPORT_NEIGH_SUPPRESS]));
if (tb[IFLA_BRPORT_GROUP_FWD_MASK]) {
char convbuf[256];
__u16 fwd_mask;
fwd_mask = rta_getattr_u16(tb[IFLA_BRPORT_GROUP_FWD_MASK]);
print_0xhex(PRINT_ANY, "group_fwd_mask",
"group_fwd_mask %#llx ", fwd_mask);
_bitmask2str(fwd_mask, convbuf, sizeof(convbuf), fwd_mask_tbl);
print_string(PRINT_ANY, "group_fwd_mask_str",
"group_fwd_mask_str %s ", convbuf);
}
if (tb[IFLA_BRPORT_VLAN_TUNNEL])
_print_onoff(f, "vlan_tunnel", "vlan_tunnel",
rta_getattr_u8(tb[IFLA_BRPORT_VLAN_TUNNEL]));
if (tb[IFLA_BRPORT_ISOLATED])
_print_onoff(f, "isolated", "isolated",
rta_getattr_u8(tb[IFLA_BRPORT_ISOLATED]));
if (tb[IFLA_BRPORT_BACKUP_PORT]) {
int backup_p = rta_getattr_u32(tb[IFLA_BRPORT_BACKUP_PORT]);
print_string(PRINT_ANY, "backup_port", "backup_port %s ",
ll_index_to_name(backup_p));
}
}
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, "fdb_flush") == 0) {
addattr(n, 1024, IFLA_BRPORT_FLUSH);
} else 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, "mcast_flood") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("mcast_flood", *argv, n,
IFLA_BRPORT_MCAST_FLOOD);
} else if (matches(*argv, "mcast_to_unicast") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("mcast_to_unicast", *argv, n,
IFLA_BRPORT_MCAST_TO_UCAST);
} else if (matches(*argv, "proxy_arp") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("proxy_arp", *argv, n,
IFLA_BRPORT_PROXYARP);
} else if (matches(*argv, "proxy_arp_wifi") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("proxy_arp_wifi", *argv, n,
IFLA_BRPORT_PROXYARP_WIFI);
} else if (matches(*argv, "mcast_router") == 0) {
__u8 mcast_router;
NEXT_ARG();
if (get_u8(&mcast_router, *argv, 0))
invarg("invalid mcast_router", *argv);
addattr8(n, 1024, IFLA_BRPORT_MULTICAST_ROUTER,
mcast_router);
} else if (matches(*argv, "mcast_fast_leave") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("mcast_fast_leave", *argv, n,
IFLA_BRPORT_FAST_LEAVE);
} else if (matches(*argv, "neigh_suppress") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("neigh_suppress", *argv, n,
IFLA_BRPORT_NEIGH_SUPPRESS);
} else if (matches(*argv, "group_fwd_mask") == 0) {
__u16 mask;
NEXT_ARG();
if (get_u16(&mask, *argv, 0))
invarg("invalid group_fwd_mask", *argv);
addattr16(n, 1024, IFLA_BRPORT_GROUP_FWD_MASK, mask);
} else if (matches(*argv, "vlan_tunnel") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("vlan_tunnel", *argv, n,
IFLA_BRPORT_VLAN_TUNNEL);
} else if (matches(*argv, "isolated") == 0) {
NEXT_ARG();
bridge_slave_parse_on_off("isolated", *argv, n,
IFLA_BRPORT_ISOLATED);
} else if (matches(*argv, "backup_port") == 0) {
int ifindex;
NEXT_ARG();
ifindex = ll_name_to_index(*argv);
if (!ifindex)
invarg("Device does not exist\n", *argv);
addattr32(n, 1024, IFLA_BRPORT_BACKUP_PORT, ifindex);
} else if (matches(*argv, "nobackup_port") == 0) {
addattr32(n, 1024, IFLA_BRPORT_BACKUP_PORT, 0);
} 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_slave",
.maxattr = IFLA_BRPORT_MAX,
.print_opt = bridge_slave_print_opt,
.parse_opt = bridge_slave_parse_opt,
.print_help = bridge_slave_print_help,
.parse_ifla_xstats = bridge_parse_xstats,
.print_ifla_xstats = bridge_print_xstats,
};