X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=bgpd%2Fbgp_attr_evpn.c;h=88e520fdc508c24de4fdd1014124cd9cf3dee105;hb=2569910bb6e5c00ececc60ed15b182e14a88cb9d;hp=14ff01ada54c09eb56466857557959c30f71d90d;hpb=b54c710717b918bcb9b22d81ffc422b54475928b;p=mirror_frr.git

diff --git a/bgpd/bgp_attr_evpn.c b/bgpd/bgp_attr_evpn.c
index 14ff01ada..88e520fdc 100644
--- a/bgpd/bgp_attr_evpn.c
+++ b/bgpd/bgp_attr_evpn.c
@@ -210,6 +210,39 @@ uint32_t bgp_attr_mac_mobility_seqnum(struct attr *attr, uint8_t *sticky)
 	return 0;
 }
 
+/*
+ * return true if attr contains router flag extended community
+ */
+void bgp_attr_evpn_na_flag(struct attr *attr, uint8_t *router_flag)
+{
+	struct ecommunity *ecom;
+	int i;
+	uint8_t val;
+
+	ecom = attr->ecommunity;
+	if (!ecom || !ecom->size)
+		return;
+
+	/* If there is a evpn na extendd community set router_flag */
+	for (i = 0; i < ecom->size; i++) {
+		uint8_t *pnt;
+		uint8_t type, sub_type;
+
+		pnt = (ecom->val + (i * ECOMMUNITY_SIZE));
+		type = *pnt++;
+		sub_type = *pnt++;
+
+		if (type == ECOMMUNITY_ENCODE_EVPN &&
+		    sub_type == ECOMMUNITY_EVPN_SUBTYPE_ND) {
+			val = *pnt++;
+			if (val & ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG) {
+				*router_flag = 1;
+				break;
+			}
+		}
+	}
+}
+
 /* dst prefix must be AF_INET or AF_INET6 prefix, to forge EVPN prefix */
 extern int bgp_build_evpn_prefix(int evpn_type, uint32_t eth_tag,
 				 struct prefix *dst)