From: Nikolay Aleksandrov <niko...@cumulusnetworks.com> Netlink returns the bridge_id and designated_root, we just need to make them visible.
Signed-off-by: Nikolay Aleksandrov <niko...@cumulusnetworks.com> --- v2: use ether_ntoa_r in bridge_id dump ip/iplink_bridge.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/ip/iplink_bridge.c b/ip/iplink_bridge.c index 00804093dcb5..3bbbcaa120cf 100644 --- a/ip/iplink_bridge.c +++ b/ip/iplink_bridge.c @@ -13,6 +13,7 @@ #include <stdlib.h> #include <string.h> #include <linux/if_link.h> +#include <netinet/ether.h> #include "rt_names.h" #include "utils.h" @@ -39,6 +40,15 @@ static void explain(void) print_explain(stderr); } +static void br_dump_bridge_id(const struct ifla_bridge_id *id, char *buf, + size_t len) +{ + char eaddr[32]; + + ether_ntoa_r((const struct ether_addr *)id->addr, eaddr); + snprintf(buf, len, "%.2x%.2x.%s", id->prio[0], id->prio[1], eaddr); +} + static int bridge_parse_opt(struct link_util *lu, int argc, char **argv, struct nlmsghdr *n) { @@ -155,6 +165,22 @@ static void bridge_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[]) ll_proto_n2a(rta_getattr_u16(tb[IFLA_BR_VLAN_PROTOCOL]), b1, sizeof(b1))); } + + if (tb[IFLA_BR_BRIDGE_ID]) { + char bridge_id[32]; + + br_dump_bridge_id(RTA_DATA(tb[IFLA_BR_BRIDGE_ID]), bridge_id, + sizeof(bridge_id)); + fprintf(f, "bridge_id %s ", bridge_id); + } + + if (tb[IFLA_BR_ROOT_ID]) { + char root_id[32]; + + br_dump_bridge_id(RTA_DATA(tb[IFLA_BR_BRIDGE_ID]), root_id, + sizeof(root_id)); + fprintf(f, "designated_root %s ", root_id); + } } static void bridge_print_help(struct link_util *lu, int argc, char **argv, -- 2.4.3