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bridge: mdb: add support to filter by vlan id 

Add the optional keyword "vid" to bridge mdb show so the user can
request filtering by a specific vlan id. Currently the filtering is
implemented only in user-space. The argument name has been chosen to match
the add/del one - "vid".

Example:
$ bridge mdb show vid 200
dev br0 port eth2 grp 239.0.0.1 permanent vid 200

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
This commit is contained in:
Nikolay Aleksandrov 2016-04-11 17:45:15 +02:00 committed by Stephen Hemminger
parent ae6eb9075f
commit 24687d678f
1 changed files with 9 additions and 2 deletions
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11
bridge/mdb.c
View File

@ -24,12 +24,12 @@
((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct br_port_msg)))) ((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct br_port_msg))))
#endif #endif
static unsigned int filter_index; static unsigned int filter_index, filter_vlan;
static void usage(void) static void usage(void)
{ {
fprintf(stderr, "Usage: bridge mdb { add | del } dev DEV port PORT grp GROUP [permanent | temp] [vid VID]\n"); fprintf(stderr, "Usage: bridge mdb { add | del } dev DEV port PORT grp GROUP [permanent | temp] [vid VID]\n");
fprintf(stderr, " bridge mdb {show} [ dev DEV ]\n"); fprintf(stderr, " bridge mdb {show} [ dev DEV ] [ vid VID ]\n");
exit(-1); exit(-1);
} }
@ -92,6 +92,8 @@ static void print_mdb_entry(FILE *f, int ifindex, struct br_mdb_entry *e,
const void *src; const void *src;
int af; int af;
if (filter_vlan && e->vid != filter_vlan)
return;
af = e->addr.proto == htons(ETH_P_IP) ? AF_INET : AF_INET6; af = e->addr.proto == htons(ETH_P_IP) ? AF_INET : AF_INET6;
src = af == AF_INET ? (const void *)&e->addr.u.ip4 : src = af == AF_INET ? (const void *)&e->addr.u.ip4 :
(const void *)&e->addr.u.ip6; (const void *)&e->addr.u.ip6;
@ -195,6 +197,11 @@ static int mdb_show(int argc, char **argv)
if (filter_dev) if (filter_dev)
duparg("dev", *argv); duparg("dev", *argv);
filter_dev = *argv; filter_dev = *argv;
} else if (strcmp(*argv, "vid") == 0) {
NEXT_ARG();
if (filter_vlan)
duparg("vid", *argv);
filter_vlan = atoi(*argv);
} }
argc--; argv++; argc--; argv++;
} }