Add v6 routes handling.

[l2tpns.git] / bgp.h

diff --git a/bgp.h b/bgp.h
index 6559566..db8b1ae 100644 (file)
--- a/bgp.h
+++ b/bgp.h
@@ -1,5 +1,5 @@
 /* BGPv4 (RFC1771) */
-/* $Id: bgp.h,v 1.4 2004/12/16 08:49:52 bodea Exp $ */
+/* $Id: bgp.h,v 1.5 2005/06/04 15:42:35 bodea Exp $ */
 
 #ifndef __BGP_H__
 #define __BGP_H__
@@ -43,11 +43,47 @@ struct bgp_data_open {
     char opt_params[sizeof(((struct bgp_packet *)0)->data) - BGP_DATA_OPEN_SIZE]; /* variable */
 } __attribute__ ((packed));
 
+struct bgp_opt_param {
+    uint8_t type;
+    uint8_t len;
+#define BGP_MAX_OPT_PARAM_SIZE 256
+    char value[BGP_MAX_OPT_PARAM_SIZE];
+} __attribute__ ((packed));
+
+#define BGP_PARAM_TYPE_CAPABILITY      2
+struct bgp_capability {
+    uint8_t code;
+    uint8_t len;
+#define BGP_MAX_CAPABILITY_SIZE        256
+    char value[BGP_MAX_CAPABILITY_SIZE];
+} __attribute__ ((packed));
+
+/* RFC4760 Multiprotocol extension */
+#define BGP_CAP_CODE_MP        1
+
+struct bgp_mp_cap_param {
+    uint16_t afi; /* sa_family_t */
+    uint8_t reserved; /* SHOULD be 0 */
+    uint8_t safi;
+} __attribute__ ((packed));
+
+/* bgp_mp_cap_param.safi */
+#define BGP_MP_SAFI_UNICAST    1
+#define BGP_MP_SAFI_MULTICAST  2
+
+struct bgp_ip6_prefix {
+    uint8_t len;
+    uint8_t prefix[16]; /* variable */
+} __attribute__ ((packed));
+
+/* end of RFC4760 specific definitions */
+
 struct bgp_ip_prefix {
     uint8_t len;
     uint32_t prefix; /* variable */
 } __attribute__ ((packed));
 
+/* works for both IPv4 and IPv6 prefixes */
 #define BGP_IP_PREFIX_SIZE(p) (1 + ((p).len / 8) + ((p).len % 8 != 0))
 
 struct bgp_path_attr {
@@ -101,6 +137,7 @@ struct bgp_data_notification {
 } __attribute__ ((packed));
 
 /* bgp_data_notification.error_code, .error_subcode */
+#define BGP_ERR_UNSPEC                 0
 #define BGP_ERR_HEADER                 1
 #  define BGP_ERR_HDR_NOT_SYNC           1
 #  define BGP_ERR_HDR_BAD_LEN            2
@@ -112,6 +149,7 @@ struct bgp_data_notification {
 #  define BGP_ERR_OPN_UNSUP_PARAM        4
 #  define BGP_ERR_OPN_AUTH_FAILURE       5
 #  define BGP_ERR_OPN_HOLD_TIME                  6
+#  define BGP_ERR_OPN_UNSUP_CAP                  7
 #define BGP_ERR_UPDATE                 3
 #  define BGP_ERR_UPD_BAD_ATTR_LIST      1
 #  define BGP_ERR_UPD_UNKN_WK_ATTR       2
@@ -138,6 +176,11 @@ enum bgp_state {
     Established,                       /* established */
 };
 
+struct bgp_route6_list {
+    struct bgp_ip6_prefix dest;
+    struct bgp_route6_list *next;
+};
+
 struct bgp_route_list {
     struct bgp_ip_prefix dest;
     struct bgp_route_list *next;
@@ -173,6 +216,12 @@ struct bgp_peer {
     int cli_flag;                      /* updates requested from CLI */
     char *path_attrs;                  /* path attrs to send in UPDATE message */
     int path_attr_len;                 /* length of path attrs */
+    int path_attr_len_without_nexthop; /* length of path attrs  without NEXT_HOP */
+    uint32_t events;                   /* events to poll */
+    struct event_data edata;           /* poll data */
+    int handle_ipv6_routes;            /* can handle IPv6 routes advertisements */
+    int update_routes6;                        /* UPDATE required for IPv6 routes */
+    struct bgp_route6_list *routes6;   /* IPv6 routes known by this peer */
 };
 
 /* bgp_peer.cli_flag */
@@ -192,10 +241,12 @@ void bgp_stop(struct bgp_peer *peer);
 void bgp_halt(struct bgp_peer *peer);
 int bgp_restart(struct bgp_peer *peer);
 int bgp_add_route(in_addr_t ip, in_addr_t mask);
+int bgp_add_route6(struct in6_addr ip, int prefixlen);
 int bgp_del_route(in_addr_t ip, in_addr_t mask);
+int bgp_del_route6(struct in6_addr ip, int prefixlen);
 void bgp_enable_routing(int enable);
-int bgp_select_state(struct bgp_peer *peer);
-int bgp_process(struct bgp_peer *peer, int readable, int writable);
+int bgp_set_poll(void);
+int bgp_process(uint32_t events[]);
 char const *bgp_state_str(enum bgp_state state);
 
 extern char const *cvs_id_bgp;