diff options
Diffstat (limited to 'ip/iplink_bridge_slave.c')
| -rw-r--r-- | ip/iplink_bridge_slave.c | 488 |
1 files changed, 488 insertions, 0 deletions
diff --git a/ip/iplink_bridge_slave.c b/ip/iplink_bridge_slave.c new file mode 100644 index 0000000..3821923 --- /dev/null +++ b/ip/iplink_bridge_slave.c @@ -0,0 +1,488 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * iplink_bridge_slave.c Bridge slave device support + * + * 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" + " [ bcast_flood {on | off} ]\n" + " [ mcast_to_unicast {on | off} ]\n" + " [ group_fwd_mask MASK ]\n" + " [ neigh_suppress {on | off} ]\n" + " [ neigh_vlan_suppress {on | off} ]\n" + " [ vlan_tunnel {on | off} ]\n" + " [ isolated {on | off} ]\n" + " [ locked {on | off} ]\n" + " [ mab {on | off} ]\n" + " [ backup_port DEVICE ] [ nobackup_port ]\n" + " [ backup_nhid NHID ]\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_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) { + int n; + + if (bitmask & 0x1) { + if (tbl[i]) + n = snprintf(dst + len, dst_size - len, "%s,", + tbl[i]); + else + n = snprintf(dst + len, dst_size - len, "0x%x,", + (1 << i)); + + if (n < 0 || n >= dst_size - len) + break; + + len += n; + } + } + + 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_on_off(PRINT_ANY, "hairpin", "hairpin %s ", + rta_getattr_u8(tb[IFLA_BRPORT_MODE])); + + if (tb[IFLA_BRPORT_GUARD]) + print_on_off(PRINT_ANY, "guard", "guard %s ", + rta_getattr_u8(tb[IFLA_BRPORT_GUARD])); + + if (tb[IFLA_BRPORT_PROTECT]) + print_on_off(PRINT_ANY, "root_block", "root_block %s ", + rta_getattr_u8(tb[IFLA_BRPORT_PROTECT])); + + if (tb[IFLA_BRPORT_FAST_LEAVE]) + print_on_off(PRINT_ANY, "fastleave", "fastleave %s ", + rta_getattr_u8(tb[IFLA_BRPORT_FAST_LEAVE])); + + if (tb[IFLA_BRPORT_LEARNING]) + print_on_off(PRINT_ANY, "learning", "learning %s ", + rta_getattr_u8(tb[IFLA_BRPORT_LEARNING])); + + if (tb[IFLA_BRPORT_UNICAST_FLOOD]) + print_on_off(PRINT_ANY, "flood", "flood %s ", + 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_on_off(PRINT_ANY, "proxy_arp", "proxy_arp %s ", + rta_getattr_u8(tb[IFLA_BRPORT_PROXYARP])); + + if (tb[IFLA_BRPORT_PROXYARP_WIFI]) + print_on_off(PRINT_ANY, "proxy_arp_wifi", "proxy_arp_wifi %s ", + 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_on_off(PRINT_ANY, "mcast_flood", "mcast_flood %s ", + rta_getattr_u8(tb[IFLA_BRPORT_MCAST_FLOOD])); + + if (tb[IFLA_BRPORT_BCAST_FLOOD]) + print_on_off(PRINT_ANY, "bcast_flood", "bcast_flood %s ", + rta_getattr_u8(tb[IFLA_BRPORT_BCAST_FLOOD])); + + if (tb[IFLA_BRPORT_MCAST_TO_UCAST]) + print_on_off(PRINT_ANY, "mcast_to_unicast", "mcast_to_unicast %s ", + rta_getattr_u8(tb[IFLA_BRPORT_MCAST_TO_UCAST])); + + if (tb[IFLA_BRPORT_NEIGH_SUPPRESS]) + print_on_off(PRINT_ANY, "neigh_suppress", "neigh_suppress %s ", + rta_getattr_u8(tb[IFLA_BRPORT_NEIGH_SUPPRESS])); + + if (tb[IFLA_BRPORT_NEIGH_VLAN_SUPPRESS]) + print_on_off(PRINT_ANY, "neigh_vlan_suppress", + "neigh_vlan_suppress %s ", + rta_getattr_u8(tb[IFLA_BRPORT_NEIGH_VLAN_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_on_off(PRINT_ANY, "vlan_tunnel", "vlan_tunnel %s ", + rta_getattr_u8(tb[IFLA_BRPORT_VLAN_TUNNEL])); + + if (tb[IFLA_BRPORT_ISOLATED]) + print_on_off(PRINT_ANY, "isolated", "isolated %s ", + rta_getattr_u8(tb[IFLA_BRPORT_ISOLATED])); + + if (tb[IFLA_BRPORT_LOCKED]) + print_on_off(PRINT_ANY, "locked", "locked %s ", + rta_getattr_u8(tb[IFLA_BRPORT_LOCKED])); + + if (tb[IFLA_BRPORT_MAB]) + print_on_off(PRINT_ANY, "mab", "mab %s ", + rta_getattr_u8(tb[IFLA_BRPORT_MAB])); + + 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)); + } + + if (tb[IFLA_BRPORT_BACKUP_NHID]) + print_uint(PRINT_ANY, "backup_nhid", "backup_nhid %u ", + rta_getattr_u32(tb[IFLA_BRPORT_BACKUP_NHID])); +} + +static void bridge_slave_parse_on_off(char *arg_name, char *arg_val, + struct nlmsghdr *n, int type) +{ + int ret; + __u8 val = parse_on_off(arg_name, arg_val, &ret); + + if (ret) + exit(1); + 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, "bcast_flood") == 0) { + NEXT_ARG(); + bridge_slave_parse_on_off("bcast_flood", *argv, n, + IFLA_BRPORT_BCAST_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 (strcmp(*argv, "neigh_vlan_suppress") == 0) { + NEXT_ARG(); + bridge_slave_parse_on_off("neigh_vlan_suppress", *argv, + n, IFLA_BRPORT_NEIGH_VLAN_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, "locked") == 0) { + NEXT_ARG(); + bridge_slave_parse_on_off("locked", *argv, n, + IFLA_BRPORT_LOCKED); + } else if (strcmp(*argv, "mab") == 0) { + NEXT_ARG(); + bridge_slave_parse_on_off("mab", *argv, n, + IFLA_BRPORT_MAB); + } 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 (strcmp(*argv, "backup_nhid") == 0) { + __u32 backup_nhid; + + NEXT_ARG(); + if (get_u32(&backup_nhid, *argv, 0)) + invarg("backup_nhid is invalid", *argv); + addattr32(n, 1024, IFLA_BRPORT_BACKUP_NHID, + backup_nhid); + } 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, +}; 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