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bridge: mdb: add support for router add/del notifications monitoring

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This patch adds support for ADDMDB/DELMDB notifications about router ports
which have been added or deleted/expired respectively.

Example output:
$ bridge -s monitor mdb
Deleted router port dev eth3 master br0
router port dev eth3 master br0

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
This commit is contained in:
Nikolay Aleksandrov 2015-07-27 13:44:05 +02:00 committed by Stephen Hemminger
parent cb89c7c70a
commit 6b4867e621
1 changed files with 17 additions and 5 deletions
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22
bridge/mdb.c
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@ -82,7 +82,7 @@ int print_mdb(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
FILE *fp = arg;
struct br_port_msg *r = NLMSG_DATA(n);
int len = n->nlmsg_len;
struct rtattr * tb[MDBA_MAX+1];
struct rtattr *tb[MDBA_MAX+1], *i;
if (n->nlmsg_type != RTM_GETMDB && n->nlmsg_type != RTM_NEWMDB && n->nlmsg_type != RTM_DELMDB) {
fprintf(stderr, "Not RTM_GETMDB, RTM_NEWMDB or RTM_DELMDB: %08x %08x %08x\n",
@ -103,7 +103,6 @@ int print_mdb(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
parse_rtattr(tb, MDBA_MAX, MDBA_RTA(r), n->nlmsg_len - NLMSG_LENGTH(sizeof(*r)));
if (tb[MDBA_MDB]) {
struct rtattr *i;
int rem = RTA_PAYLOAD(tb[MDBA_MDB]);
for (i = RTA_DATA(tb[MDBA_MDB]); RTA_OK(i, rem); i = RTA_NEXT(i, rem))
@ -111,9 +110,22 @@ int print_mdb(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
}
if (tb[MDBA_ROUTER]) {
if (show_details) {
fprintf(fp, "router ports on %s: ", ll_index_to_name(r->ifindex));
br_print_router_ports(fp, tb[MDBA_ROUTER]);
if (n->nlmsg_type == RTM_GETMDB) {
if (show_details) {
fprintf(fp, "router ports on %s: ",
ll_index_to_name(r->ifindex));
br_print_router_ports(fp, tb[MDBA_ROUTER]);
}
} else {
uint32_t *port_ifindex;
i = RTA_DATA(tb[MDBA_ROUTER]);
port_ifindex = RTA_DATA(i);
if (n->nlmsg_type == RTM_DELMDB)
fprintf(fp, "Deleted ");
fprintf(fp, "router port dev %s master %s\n",
ll_index_to_name(*port_ifindex),
ll_index_to_name(r->ifindex));
}
}