iplink: bridge: add support for IFLA_BR_MCAST_SNOOPING

This patch implements support for the IFLA_BR_MCAST_SNOOPING attribute
in iproute2 so it can change the multicast snooping value.

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>

diff --git a/ip/iplink_bridge.c b/ip/iplink_bridge.c
index 7a945ed2ae6329ccc185f982312c041ae6fe5338..fef867bfbd7ee8124823f6574504039dd90be95a 100644 (file)
--- a/ip/iplink_bridge.c
+++ b/ip/iplink_bridge.c
@@ -33,6 +33,7 @@ static void print_explain(FILE *f)
                "                  [ vlan_filtering VLAN_FILTERING ]\n"
                "                  [ vlan_protocol VLAN_PROTOCOL ]\n"
                "                  [ vlan_default_pvid VLAN_DEFAULT_PVID ]\n"
+               "                  [ mcast_snooping MULTICAST_SNOOPING ]\n"
                "                  [ mcast_router MULTICAST_ROUTER ]\n"
                "\n"
                "Where: VLAN_PROTOCOL := { 802.1Q | 802.1ad }\n"
@@ -149,6 +150,14 @@ static int bridge_parse_opt(struct link_util *lu, int argc, char **argv,
                                invarg("invalid mcast_router", *argv);
 
                        addattr8(n, 1024, IFLA_BR_MCAST_ROUTER, mcast_router);
+               } else if (matches(*argv, "mcast_snooping") == 0) {
+                       __u8 mcast_snoop;
+
+                       NEXT_ARG();
+                       if (get_u8(&mcast_snoop, *argv, 0))
+                               invarg("invalid mcast_snooping", *argv);
+
+                       addattr8(n, 1024, IFLA_BR_MCAST_SNOOPING, mcast_snoop);
                } else if (matches(*argv, "help") == 0) {
                        explain();
                        return -1;
@@ -287,6 +296,10 @@ static void bridge_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
                                    1 /*ARPHDR_ETHER*/, mac, sizeof(mac)));
        }
 
+       if (tb[IFLA_BR_MCAST_SNOOPING])
+               fprintf(f, "mcast_snooping %u ",
+                       rta_getattr_u8(tb[IFLA_BR_MCAST_SNOOPING]));
+
        if (tb[IFLA_BR_MCAST_ROUTER])
                fprintf(f, "mcast_router %u ",
                        rta_getattr_u8(tb[IFLA_BR_MCAST_ROUTER]));