Added support for sending and handling the multicast capability

1 files changed, 12 insertions, 2 deletions

diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h
index b06f20a..359bd9c 100644
--- a/proto/bgp/bgp.h
+++ b/proto/bgp/bgp.h
@@ -32,6 +32,7 @@ struct bgp_config {
   int capabilities;			/* Enable capability handshake [RFC3392] */
   int enable_refresh;			/* Enable local support for route refresh [RFC2918] */
   int enable_as4;			/* Enable local support for 4B AS numbers [RFC4893] */
+  int enable_multicast;			/* Enable local support for multicast routes [RFC4760] */
   u32 rr_cluster_id;			/* Route reflector cluster ID, if different from local ID */
   int rr_client;			/* Whether neighbor is RR client of me */
   int rs_client;			/* Whether neighbor is RS client of me */
@@ -73,6 +74,8 @@ struct bgp_conn {
   int start_state;			/* protocol start_state snapshot when connection established */
   int want_as4_support;			/* Connection tries to establish AS4 session */
   int peer_as4_support;			/* Peer supports 4B AS numbers [RFC4893] */
+  int want_multicast_support;			/* We want to exchange multicast routes */
+  int peer_multicast_support;			/* Peer supports multicast routes [RFC4760] */
   int peer_refresh_support;		/* Peer supports route refresh [RFC2918] */
   unsigned hold_time, keepalive_time;	/* Times calculated from my and neighbor's requirements */
 };
@@ -108,11 +111,9 @@ struct bgp_proto {
   u8 last_error_class; 			/* Error class of last error */
   u32 last_error_code;			/* Error code of last error. BGP protocol errors
 					   are encoded as (bgp_err_code << 16 | bgp_err_subcode) */
-#ifdef IPV6
   byte *mp_reach_start, *mp_unreach_start; /* Multiprotocol BGP attribute notes */
   unsigned mp_reach_len, mp_unreach_len;
   ip_addr local_link;			/* Link-level version of source_addr */
-#endif
 };
 
 struct bgp_prefix {
@@ -297,6 +298,12 @@ void bgp_log_error(struct bgp_proto *p, u8 class, char *msg, unsigned code, unsi
 #define ORIGIN_EGP		1
 #define ORIGIN_INCOMPLETE	2
 
+/* Capabilities */
+
+#define BGP_CAP_MP	1
+#define BGP_CAP_REFRESH	2
+#define BGP_CAP_AS4	65
+
 /* Address families */
 
 #define BGP_AF_IPV4		1
@@ -308,4 +315,7 @@ void bgp_log_error(struct bgp_proto *p, u8 class, char *msg, unsigned code, unsi
 #define BGP_AF BGP_AF_IPV4
 #endif
 
+#define BGP_SAF_UNICAST 1
+#define BGP_SAF_MULTICAST 2
+
 #endif