Merge pull request #10081 from ckishimo/ospf6d_type4

[mirror_frr.git] / bgpd / bgp_nexthop.h

diff --git a/bgpd/bgp_nexthop.h b/bgpd/bgp_nexthop.h
index c4b913faf4b7cf0b1b0b593dfeae8d4675b967c0..16c2b6c65a8ad36c5f4a5d04d1d9f5dc15f2fa64 100644 (file)
--- a/bgpd/bgp_nexthop.h
+++ b/bgpd/bgp_nexthop.h
@@ -41,6 +41,9 @@ PREDECL_RBTREE_UNIQ(bgp_nexthop_cache);
 
 /* BGP nexthop cache value structure. */
 struct bgp_nexthop_cache {
+       /* The ifindex of the outgoing interface *if* it's a v6 LL */
+       ifindex_t ifindex;
+
        /* RB-tree entry. */
        struct bgp_nexthop_cache_item entry;
 
@@ -53,6 +56,10 @@ struct bgp_nexthop_cache {
        time_t last_update;
        uint16_t flags;
 
+/*
+ * If the nexthop is EVPN gateway IP NH, VALID flag is set only if the nexthop
+ * is RIB reachable as well as MAC/IP is present
+ */
 #define BGP_NEXTHOP_VALID             (1 << 0)
 #define BGP_NEXTHOP_REGISTERED        (1 << 1)
 #define BGP_NEXTHOP_CONNECTED         (1 << 2)
@@ -61,11 +68,29 @@ struct bgp_nexthop_cache {
 #define BGP_STATIC_ROUTE_EXACT_MATCH  (1 << 5)
 #define BGP_NEXTHOP_LABELED_VALID     (1 << 6)
 
+/*
+ * This flag is added for EVPN gateway IP nexthops.
+ * If the nexthop is RIB reachable, but a MAC/IP is not yet
+ * resolved, this flag is set.
+ * Following table explains the combination of L3 and L2 reachability w.r.t.
+ * VALID and INCOMPLETE flags
+ *
+ *                | MACIP resolved | MACIP unresolved
+ *----------------|----------------|------------------
+ * L3 reachable   | VALID      = 1 | VALID      = 0
+ *                | INCOMPLETE = 0 | INCOMPLETE = 1
+ * ---------------|----------------|--------------------
+ * L3 unreachable | VALID      = 0 | VALID      = 0
+ *                | INCOMPLETE = 0 | INCOMPLETE = 0
+ */
+#define BGP_NEXTHOP_EVPN_INCOMPLETE (1 << 7)
+
        uint16_t change_flags;
 
 #define BGP_NEXTHOP_CHANGED           (1 << 0)
 #define BGP_NEXTHOP_METRIC_CHANGED    (1 << 1)
 #define BGP_NEXTHOP_CONNECTED_CHANGED (1 << 2)
+#define BGP_NEXTHOP_MACIP_CHANGED (1 << 3)
 
        /* Back pointer to the cache tree this entry belongs to. */
        struct bgp_nexthop_cache_head *tree;
@@ -76,6 +101,11 @@ struct bgp_nexthop_cache {
        LIST_HEAD(path_list, bgp_path_info) paths;
        unsigned int path_count;
        struct bgp *bgp;
+
+       /* This flag is set to TRUE for a bnc that is gateway IP overlay index
+        * nexthop.
+        */
+       bool is_evpn_gwip_nexthop;
 };
 
 extern int bgp_nexthop_cache_compare(const struct bgp_nexthop_cache *a,
@@ -100,6 +130,11 @@ struct update_subgroup;
 struct bgp_dest;
 struct attr;
 
+#define BNC_FLAG_DUMP_SIZE 180
+extern char *bgp_nexthop_dump_bnc_flags(struct bgp_nexthop_cache *bnc,
+                                       char *buf, size_t len);
+extern char *bgp_nexthop_dump_bnc_change_flags(struct bgp_nexthop_cache *bnc,
+                                              char *buf, size_t len);
 extern void bgp_connected_add(struct bgp *bgp, struct connected *c);
 extern void bgp_connected_delete(struct bgp *bgp, struct connected *c);
 extern bool bgp_subgrp_multiaccess_check_v4(struct in_addr nexthop,