vrrpd: protodown macvlan in backup state

Signed-off-by: Quentin Young <qlyoung@cumulusnetworks.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/zebra/if_netlink.c b/zebra/if_netlink.c
index ce0834f190..e7d988cd9f 100644
--- a/zebra/if_netlink.c
+++ b/zebra/if_netlink.c
@@ -1396,6 +1396,32 @@ int netlink_link_change(struct nlmsghdr *h, ns_id_t ns_id, int startup)
 	return 0;
 }
 
+int netlink_protodown(struct interface *ifp, bool down)
+{
+	struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT);
+
+	struct {
+		struct nlmsghdr n;
+		struct ifinfomsg ifa;
+		char buf[NL_PKT_BUF_SIZE];
+	} req;
+
+	memset(&req, 0, sizeof req);
+
+	req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
+	req.n.nlmsg_flags = NLM_F_REQUEST;
+	req.n.nlmsg_type = RTM_SETLINK;
+	req.n.nlmsg_pid = zns->netlink_cmd.snl.nl_pid;
+
+	req.ifa.ifi_index = ifp->ifindex;
+
+	addattr_l(&req.n, sizeof req, IFLA_PROTO_DOWN, &down, 4);
+	addattr_l(&req.n, sizeof req, IFLA_LINK, &ifp->ifindex, 4);
+
+	return netlink_talk(netlink_talk_filter, &req.n, &zns->netlink_cmd, zns,
+			    0);
+}
+
 /* Interface information read by netlink. */
 void interface_list(struct zebra_ns *zns)
 {