lib: Enhance prefix dump for EVPN prefixes

This commit is also taking into account changes related to srcdes
feature introduction in zebra folder.

Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Reviewed-by:   Donald Sharp <sharpd@cumulusnetworks.com>
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>

Ticket: CM-12262
Reviewed By: CCR-5065
Testing Done: Manual

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>

4 files changed, 39 insertions, 20 deletions

diff --git a/lib/prefix.c b/lib/prefix.c
index 06ed00baa..6d3de3d6c 100644
--- a/lib/prefix.c
+++ b/lib/prefix.c
@@ -859,23 +859,39 @@ str2prefix (const char *str, struct prefix *p)
 }
 
 const char *
-prefix2str (union prefix46constptr pu, char *str, int size)
+prefix2str (union prefixconstptr pu, char *str, int size)
 {
   const struct prefix *p = pu.p;
+  char buf[PREFIX2STR_BUFFER];
 
-  if (p->family == AF_ETHERNET)
-    {
-      snprintf(str, size, "%02x:%02x:%02x:%02x:%02x:%02x/%d",
-               p->u.prefix_eth.octet[0], p->u.prefix_eth.octet[1],
-               p->u.prefix_eth.octet[2], p->u.prefix_eth.octet[3],
-               p->u.prefix_eth.octet[4], p->u.prefix_eth.octet[5],
-               p->prefixlen);
-    }
-  else
+  switch (p->family)
     {
-      char buf[PREFIX2STR_BUFFER];
-      inet_ntop(p->family, &p->u.prefix, buf, sizeof(buf));
-      snprintf(str, size, "%s/%d", buf, p->prefixlen);
+      u_char family;
+
+      case AF_INET:
+      case AF_INET6:
+        snprintf (str, size, "%s/%d",
+                  inet_ntop (p->family, &p->u.prefix, buf, PREFIX2STR_BUFFER),
+                  p->prefixlen);
+        break;
+
+      case AF_ETHERNET:
+        if (p->u.prefix_evpn.route_type == 5)
+          {
+            family = (p->u.prefix_evpn.flags & (IP_ADDR_V4 | IP_PREFIX_V4)) ?
+              AF_INET : AF_INET6;
+            snprintf (str, size, "[%d]:[%u][%s]/%d",
+                      p->u.prefix_evpn.route_type,
+                      p->u.prefix_evpn.eth_tag,
+                      inet_ntop (family, &p->u.prefix_evpn.ip.addr,
+                                 buf, PREFIX2STR_BUFFER),
+                      p->prefixlen);
+          }
+        break;
+
+      default:
+        sprintf (str, "UNK prefix");
+        break;
     }
 
   return str;
diff --git a/lib/prefix.h b/lib/prefix.h
index 1756dd21c..5c1c71a7c 100644
--- a/lib/prefix.h
+++ b/lib/prefix.h
@@ -69,6 +69,7 @@ struct evpn_addr
   u_char ip_prefix_length;
   union
   {
+    u_char addr;
     struct in_addr v4_addr;
     struct in6_addr v6_addr;
   } ip;
@@ -185,18 +186,20 @@ struct prefix_sg
  * side, which strips type safety since the cast will accept any pointer
  * type.)
  */
-union prefix46ptr
+union prefixptr
 {
   struct prefix *p;
   struct prefix_ipv4 *p4;
   struct prefix_ipv6 *p6;
+  struct prefix_evpn *evp;
 } __attribute__ ((transparent_union));
 
-union prefix46constptr
+union prefixconstptr
 {
   const struct prefix *p;
   const struct prefix_ipv4 *p4;
   const struct prefix_ipv6 *p6;
+  const struct prefix_evpn *evp;
 } __attribute__ ((transparent_union));
 
 #ifndef INET_ADDRSTRLEN
@@ -270,7 +273,7 @@ extern int str2prefix (const char *, struct prefix *);
 
 #define PREFIX2STR_BUFFER  PREFIX_STRLEN
 
-extern const char *prefix2str (union prefix46constptr, char *, int);
+extern const char *prefix2str (union prefixconstptr, char *, int);
 extern int prefix_match (const struct prefix *, const struct prefix *);
 extern int prefix_same (const struct prefix *, const struct prefix *);
 extern int prefix_cmp (const struct prefix *, const struct prefix *);
diff --git a/lib/srcdest_table.c b/lib/srcdest_table.c
index dd148fa41..04c9eff79 100644
--- a/lib/srcdest_table.c
+++ b/lib/srcdest_table.c
@@ -242,7 +242,7 @@ srcdest_route_next(struct route_node *rn)
 }
 
 struct route_node *
-srcdest_rnode_get (struct route_table *table, union prefix46ptr dst_pu,
+srcdest_rnode_get (struct route_table *table, union prefixptr dst_pu,
                   struct prefix_ipv6 *src_p)
 {
   struct prefix_ipv6 *dst_p = dst_pu.p6;
@@ -253,7 +253,7 @@ srcdest_rnode_get (struct route_table *table, union prefix46ptr dst_pu,
 }
 
 struct route_node *
-srcdest_rnode_lookup (struct route_table *table, union prefix46ptr dst_pu,
+srcdest_rnode_lookup (struct route_table *table, union prefixptr dst_pu,
                       struct prefix_ipv6 *src_p)
 {
   struct prefix_ipv6 *dst_p = dst_pu.p6;
diff --git a/lib/srcdest_table.h b/lib/srcdest_table.h
index 59111b5d1..207f5d121 100644
--- a/lib/srcdest_table.h
+++ b/lib/srcdest_table.h
@@ -57,10 +57,10 @@ extern route_table_delegate_t _srcdest_srcnode_delegate;
 
 extern struct route_table *srcdest_table_init(void);
 extern struct route_node *srcdest_rnode_get(struct route_table *table,
-                                            union prefix46ptr dst_pu,
+                                            union prefixptr dst_pu,
                                             struct prefix_ipv6 *src_p);
 extern struct route_node *srcdest_rnode_lookup(struct route_table *table,
-                                            union prefix46ptr dst_pu,
+                                            union prefixptr dst_pu,
                                             struct prefix_ipv6 *src_p);
 extern void srcdest_rnode_prefixes (struct route_node *rn, struct prefix **p,
                                     struct prefix **src_p);