iplink: bridge: add support for IFLA_BR_GROUP_FWD_MASK

This patch implements support for the IFLA_BR_GROUP_FWD_MASK attribute
in iproute2 so it can change the group forwarding mask.

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

diff --git a/ip/iplink_bridge.c b/ip/iplink_bridge.c
index cd16557514177f79e942e3318e14de7ad459f9a1..2ee4bd690a28e3d14f84b6572c60b3bdda09d4b9 100644 (file)
--- a/ip/iplink_bridge.c
+++ b/ip/iplink_bridge.c
@@ -28,6 +28,7 @@ static void print_explain(FILE *f)
                "                  [ ageing_time AGEING_TIME ]\n"
                "                  [ stp_state STP_STATE ]\n"
                "                  [ priority PRIORITY ]\n"
+               "                  [ group_fwd_mask MASK ]\n"
                "                  [ vlan_filtering VLAN_FILTERING ]\n"
                "                  [ vlan_protocol VLAN_PROTOCOL ]\n"
                "\n"
@@ -111,6 +112,14 @@ static int bridge_parse_opt(struct link_util *lu, int argc, char **argv,
                                return -1;
                        }
                        addattr16(n, 1024, IFLA_BR_VLAN_PROTOCOL, vlan_proto);
+               } else if (matches(*argv, "group_fwd_mask") == 0) {
+                       __u16 fwd_mask;
+
+                       NEXT_ARG();
+                       if (get_u16(&fwd_mask, *argv, 0))
+                               invarg("invalid group_fwd_mask", *argv);
+
+                       addattr16(n, 1024, IFLA_BR_GROUP_FWD_MASK, fwd_mask);
                } else if (matches(*argv, "help") == 0) {
                        explain();
                        return -1;
@@ -231,6 +240,10 @@ static void bridge_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
                fprintf(f, "gc_timer %4i.%.2i ", (int)tv.tv_sec,
                        (int)tv.tv_usec/10000);
        }
+
+       if (tb[IFLA_BR_GROUP_FWD_MASK])
+               fprintf(f, "group_fwd_mask %#x ",
+                       rta_getattr_u16(tb[IFLA_BR_GROUP_FWD_MASK]));
 }
 
 static void bridge_print_help(struct link_util *lu, int argc, char **argv,