diff options
Diffstat (limited to 'proto/bgp/bgp.h')
| -rw-r--r-- | proto/bgp/bgp.h | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h index b604c7aa..075e1bb9 100644 --- a/proto/bgp/bgp.h +++ b/proto/bgp/bgp.h @@ -83,6 +83,7 @@ struct bgp_config { struct iface *iface; /* Interface for link-local addresses */ u16 local_port; /* Local listening port */ u16 remote_port; /* Neighbor destination port */ + int peer_type; /* Internal or external BGP (BGP_PT_*, optional) */ int multihop; /* Number of hops if multihop */ int strict_bind; /* Bind listening socket to local address */ int ttl_security; /* Enable TTL security [RFC 5082] */ @@ -123,6 +124,9 @@ struct bgp_config { u32 disable_after_cease; /* Disable it when cease is received, bitfield */ char *password; /* Password used for MD5 authentication */ + net_addr *remote_range; /* Allowed neighbor range for dynamic BGP */ + char *dynamic_name; /* Name pattern for dynamic BGP */ + int dynamic_name_digits; /* Minimum number of digits for dynamic names */ int check_link; /* Use iface link state for liveness detection */ int bfd; /* Use BFD for liveness detection */ }; @@ -136,6 +140,7 @@ struct bgp_channel_config { ip_addr next_hop_addr; /* Local address for NEXT_HOP attribute */ u8 next_hop_self; /* Always set next hop to local IP address (NH_*) */ u8 next_hop_keep; /* Do not modify next hop attribute (NH_*) */ + u8 mandatory; /* Channel is mandatory in capability negotiation */ u8 missing_lladdr; /* What we will do when we don' know link-local addr, see MLL_* */ u8 gw_mode; /* How we compute route gateway from next_hop attr, see GW_* */ u8 secondary; /* Accept also non-best routes (i.e. RA_ACCEPTED) */ @@ -151,6 +156,9 @@ struct bgp_channel_config { struct rtable_config *igp_table_ip6; /* Table for recursive IPv6 next hop lookups */ }; +#define BGP_PT_INTERNAL 1 +#define BGP_PT_EXTERNAL 2 + #define NH_NO 0 #define NH_ALL 1 #define NH_IBGP 2 @@ -213,8 +221,11 @@ struct bgp_caps { u16 gr_time; /* Graceful restart time in seconds */ u8 llgr_aware; /* Long-lived GR capability, RFC draft */ + u8 any_ext_next_hop; /* Bitwise OR of per-AF ext_next_hop */ + u8 any_add_path; /* Bitwise OR of per-AF add_path */ u16 af_count; /* Number of af_data items */ + u16 length; /* Length of capabilities in OPEN msg */ struct bgp_af_caps af_data[0]; /* Per-AF capability data */ }; @@ -235,6 +246,7 @@ struct bgp_conn { u8 state; /* State of connection state machine */ u8 as4_session; /* Session uses 4B AS numbers in AS_PATH (both sides support it) */ u8 ext_messages; /* Session uses extended message length */ + u32 received_as; /* ASN received in OPEN message */ struct bgp_caps *local_caps; struct bgp_caps *remote_caps; @@ -254,18 +266,21 @@ struct bgp_conn { struct bgp_proto { struct proto p; - struct bgp_config *cf; /* Shortcut to BGP configuration */ + const struct bgp_config *cf; /* Shortcut to BGP configuration */ + ip_addr local_ip, remote_ip; u32 local_as, remote_as; u32 public_as; /* Externally visible ASN (local_as or confederation id) */ u32 local_id; /* BGP identifier of this router */ u32 remote_id; /* BGP identifier of the neighbor */ u32 rr_cluster_id; /* Route reflector cluster ID */ - int start_state; /* Substates that partitions BS_START */ + u8 start_state; /* Substates that partitions BS_START */ u8 is_internal; /* Internal BGP session (local_as == remote_as) */ u8 is_interior; /* Internal or intra-confederation BGP session */ u8 as4_session; /* Session uses 4B AS numbers in AS_PATH (both sides support it) */ u8 rr_client; /* Whether neighbor is RR client of me */ u8 rs_client; /* Whether neighbor is RS client of me */ + u8 ipv4; /* Use IPv4 connection, i.e. remote_ip is IPv4 */ + u8 passive; /* Do not initiate outgoing connection */ u8 route_refresh; /* Route refresh allowed to send [RFC 2918] */ u8 enhanced_refresh; /* Enhanced refresh is negotiated [RFC 7313] */ u8 gr_ready; /* Neighbor could do graceful restart */ @@ -282,11 +297,12 @@ struct bgp_proto { struct neighbor *neigh; /* Neighbor entry corresponding to remote ip, NULL if multihop */ struct bgp_socket *sock; /* Shared listening socket */ struct bfd_request *bfd_req; /* BFD request, if BFD is used */ - ip_addr source_addr; /* Local address used as an advertised next hop */ - ip_addr link_addr; /* Link-local version of source_addr */ + struct birdsock *postponed_sk; /* Postponed incoming socket for dynamic BGP */ + ip_addr link_addr; /* Link-local version of local_ip */ event *event; /* Event for respawning and shutting process */ timer *startup_timer; /* Timer used to delay protocol startup due to previous errors (startup_delay) */ timer *gr_timer; /* Timer waiting for reestablishment after graceful restart */ + int dynamic_name_counter; /* Counter for dynamic BGP names */ uint startup_delay; /* Delay (in seconds) of protocol startup due to previous errors */ btime last_proto_error; /* Time of last error that leads to protocol stop */ u8 last_error_class; /* Error class of last error */ @@ -472,7 +488,7 @@ void bgp_graceful_restart_done(struct bgp_channel *c); void bgp_refresh_begin(struct bgp_channel *c); void bgp_refresh_end(struct bgp_channel *c); void bgp_store_error(struct bgp_proto *p, struct bgp_conn *c, u8 class, u32 code); -void bgp_stop(struct bgp_proto *p, uint subcode, byte *data, uint len); +void bgp_stop(struct bgp_proto *p, int subcode, byte *data, uint len); struct rte_source *bgp_find_source(struct bgp_proto *p, u32 path_id); struct rte_source *bgp_get_source(struct bgp_proto *p, u32 path_id); @@ -549,6 +565,7 @@ void bgp_get_route_info(struct rte *, byte *buf); /* packets.c */ void bgp_dump_state_change(struct bgp_conn *conn, uint old, uint new); +void bgp_prepare_capabilities(struct bgp_conn *conn); const struct bgp_af_desc *bgp_get_af_desc(u32 afi); const struct bgp_af_caps *bgp_find_af_caps(struct bgp_caps *caps, u32 afi); void bgp_schedule_packet(struct bgp_conn *conn, struct bgp_channel *c, int type); |