bgpd: Display (show) commands for EVPN

Implement various operational/display commands for EVPN:
- show bgp evpn summary
- show bgp evpn vni [<vni>]
- show bgp evpn route [type <macip|multicast>]
- show bgp evpn route [rd <rd> [type <macip|multicast>]]
- show bgp evpn route [rd <rd> [mac <mac> [ip <ip>]]]
- show bgp evpn route vni <vni> [type <macip|multicast> | vtep <ip>]
- show bgp evpn route vni <vni> [mac <mac> [ip <ip>]]]
- show bgp evpn route vni <vni> [multicast <ip>]
- show bgp evpn route vni all [vtep <ip>]
- show bgp evpn import-rt

Signed-off-by: Vivek Venkatraman <vivek@cumulusnetworks.com>
Signed-off-by: Daniel Walton <dwalton@cumulusnetworks.com>
Signed-off-by: Mitesh Kanjariya <mitesh@cumulusnetworks.com>

1 files changed, 45 insertions, 0 deletions

diff --git a/bgpd/bgp_evpn.c b/bgpd/bgp_evpn.c
index 5bff85723..f17bcfab1 100644
--- a/bgpd/bgp_evpn.c
+++ b/bgpd/bgp_evpn.c
@@ -1982,6 +1982,51 @@ bgp_evpn_label2str (mpls_label_t *label, char *buf, int len)
 }
 
 /*
+ * Function to convert evpn route to string.
+ * NOTE: We don't use prefix2str as the output here is a bit different.
+ */
+char *
+bgp_evpn_route2str (struct prefix_evpn *p, char *buf, int len)
+{
+  char buf1[ETHER_ADDR_STRLEN];
+  char buf2[PREFIX2STR_BUFFER];
+
+  if (p->prefix.route_type == BGP_EVPN_IMET_ROUTE)
+    {
+      snprintf (buf, len, "[%d]:[0]:[%d]:[%s]",
+                p->prefix.route_type, IS_EVPN_PREFIX_IPADDR_V4(p) ? \
+                IPV4_MAX_BITLEN : IPV6_MAX_BITLEN,
+                inet_ntoa(p->prefix.ip.ipaddr_v4));
+    }
+  else if (p->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)
+    {
+      if (IS_EVPN_PREFIX_IPADDR_NONE(p))
+        snprintf (buf, len, "[%d]:[0]:[0]:[%d]:[%s]",
+                  p->prefix.route_type, 8*ETHER_ADDR_LEN,
+                  prefix_mac2str (&p->prefix.mac, buf1, sizeof(buf1)));
+      else
+        {
+          u_char family;
+
+          family = IS_EVPN_PREFIX_IPADDR_V4(p) ? \
+                   AF_INET : AF_INET6;
+          snprintf (buf, len, "[%d]:[0]:[0]:[%d]:[%s]:[%d]:[%s]",
+                    p->prefix.route_type, 8*ETHER_ADDR_LEN,
+                    prefix_mac2str (&p->prefix.mac, buf1, sizeof(buf1)),
+                    family == AF_INET ? IPV4_MAX_BITLEN : IPV6_MAX_BITLEN,
+                    inet_ntop (family, &p->prefix.ip.ip.addr,
+                               buf2, PREFIX2STR_BUFFER));
+        }
+    }
+  else
+    {
+      /* Currently, this is to cater to other AF_ETHERNET code. */
+    }
+
+  return(buf);
+}
+
+/*
  * Encode EVPN prefix in Update (MP_REACH)
  */
 void