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iproute2 bridge: bring to above par with brctl show macs 

root@moja-mojo:bridge# ./bridge fdb help
Usage: bridge fdb { add | append | del | replace } ADDR dev DEV {self|master} [ temp ]
              [router] [ dst IPADDR] [ vlan VID ]
              [ port PORT] [ vni VNI ] [via DEV]
       bridge fdb {show} [ br BRDEV ] [ brport DEV ]

 Lets start with two bridges each with a port...

root@moja-mojo:bridge# ./bridge link
10: sw1-p1 state DOWN : <BROADCAST,NOARP> mtu 1500 master sw1 state disabled priority 32 cost 100
11: eth1 state DOWN : <BROADCAST,NOARP> mtu 1500 master br0 state disabled priority 32 cost 100

show all...
root@moja-mojo:bridge# ./bridge fdb show
33:33:00:00:00:01 dev ifb0 self permanent
33:33:00:00:00:01 dev ifb1 self permanent
33:33:00:00:00:01 dev eth0 self permanent
01:00:5e:00:00:01 dev eth0 self permanent
33:33:ff:92:c0:60 dev eth0 self permanent
33:33:00:00:00:fb dev eth0 self permanent
01:00:5e:00:00:fb dev eth0 self permanent
01:00:5e:7f:ff:fd dev eth0 self permanent
01:00:5e:00:00:01 dev wlan0 self permanent
33:33:00:00:00:01 dev wlan0 self permanent
33:33:ff:c2:84:3b dev wlan0 self permanent
33:33:00:00:00:fb dev wlan0 self permanent
01:00:5e:00:00:01 dev virbr0 self permanent
01:00:5e:00:00:fb dev virbr0 self permanent
33:33:00:00:00:01 dev br0 self permanent
33:33:00:00:00:01 dev sw1 self permanent
33:33:00:00:00:01 dev dummy0 self permanent
5e:f4:03:44:da:9a dev sw1-p1 vlan 0 master sw1 permanent
33:33:00:00:00:01 dev sw1-p1 self permanent
b6:5e:dd:ce:d7:5e dev eth1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev eth1 self permanent

Lets see a netdev that is *not* attached to a bridge

root@moja-mojo:bridge# ./bridge fdb show brport eth0
33:33:00:00:00:01 self permanent
01:00:5e:00:00:01 self permanent
33:33:ff:92:c0:60 self permanent
33:33:00:00:00:fb self permanent
01:00:5e:00:00:fb self permanent
01:00:5e:7f:ff:fd self permanent

Lets see a netdev that is bridge port
root@moja-mojo:bridge# ./bridge fdb show brport eth1
hadi@jhs-1:/media/MT1/other-gits/iproute-jul04/bridge$ ./bridge fdb show brport eth1
b6:5e:dd:ce:d7:5e vlan 0 master br0 permanent
33:33:00:00:00:01 self permanent

Specify the correct bridge and you get good stuff
root@moja-mojo:bridge# ./bridge fdb show brport eth1 br br0
6:5e:dd:ce:d7:5e vlan 0 master br0 permanent
33:33:00:00:00:01 self permanent

Specify the wrong bridge and you get good nada
root@moja-mojo:bridge# ./bridge fdb show brport eth1 br sw1

dump br0
root@moja-mojo:bridge# ./bridge fdb show br br0
33:33:00:00:00:01 dev br0 self permanent
b6:5e:dd:ce:d7:5e dev eth1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev eth1 self permanent

dump sw1
root@moja-mojo:bridge# ./bridge fdb show br sw1
33:33:00:00:00:01 dev sw1 self permanent
5e:f4:03:44:da:9a dev sw1-p1 vlan 0 master sw1 permanent
33:33:00:00:00:01 dev sw1-p1 self permanent

Lets move a port from one bridge to another for shits-and-giggles
(as the New Brunswickians like to say)
root@moja-mojo:bridge# ip link set sw1-p1 master br0

Now dump again br0
root@moja-mojo:bridge# ./bridge fdb show br br0
33:33:00:00:00:01 dev br0 self permanent
5e:f4:03:44:da:9a dev sw1-p1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev sw1-p1 self permanent
b6:5e:dd:ce:d7:5e dev eth1 vlan 0 master br0 permanent
33:33:00:00:00:01 dev eth1 self permanent

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
This commit is contained in:
Jamal Hadi Salim 2014-07-04 08:37:10 -04:00 committed by Stephen Hemminger
parent 50b9950dd9
commit aeb14eb0b2
1 changed files with 33 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
bridge/fdb.c
View File

@ -34,7 +34,7 @@ static void usage(void)
fprintf(stderr, "Usage: bridge fdb { add | append | del | replace } ADDR dev DEV {self|master} [ temp ]\n"
" [router] [ dst IPADDR] [ vlan VID ]\n"
" [ port PORT] [ vni VNI ] [via DEV]\n");
fprintf(stderr, " bridge fdb {show} [ dev DEV ]\n");
fprintf(stderr, " bridge fdb {show} [ br BRDEV ] [ brport DEV ]\n");
exit(-1);
}
@ -161,18 +161,45 @@ int print_fdb(const struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
static int fdb_show(int argc, char **argv)
{
struct {
struct nlmsghdr n;
struct ifinfomsg ifm;
char buf[256];
} req;
char *filter_dev = NULL;
char *br = NULL;
int msg_size = sizeof(struct ifinfomsg);
memset(&req, 0, sizeof(req));
req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
req.ifm.ifi_family = PF_BRIDGE;
while (argc > 0) {
if (strcmp(*argv, "dev") == 0) {
if ((strcmp(*argv, "brport") == 0) || strcmp(*argv, "dev") == 0) {
NEXT_ARG();
if (filter_dev)
duparg("dev", *argv);
filter_dev = *argv;
} else if (strcmp(*argv, "br") == 0) {
NEXT_ARG();
br = *argv;
} else {
if (matches(*argv, "help") == 0)
usage();
}
argc--; argv++;
}
if (br) {
int br_ifindex = ll_name_to_index(br);
if (br_ifindex == 0) {
fprintf(stderr, "Cannot find bridge device \"%s\"\n", br);
return -1;
}
addattr32(&req.n, sizeof(req), IFLA_MASTER, br_ifindex);
msg_size += RTA_LENGTH(4);
}
/*we'll keep around filter_dev for older kernels */
if (filter_dev) {
filter_index = if_nametoindex(filter_dev);
if (filter_index == 0) {
@ -180,9 +207,10 @@ static int fdb_show(int argc, char **argv)
filter_dev);
return -1;
}
req.ifm.ifi_index = filter_index;
}
if (rtnl_wilddump_request(&rth, PF_BRIDGE, RTM_GETNEIGH) < 0) {
if (rtnl_dump_request(&rth, RTM_GETNEIGH, &req.ifm, msg_size) < 0) {
perror("Cannot send dump request");
exit(1);
}