diff options
Diffstat (limited to 'proto/bgp/bgp.h')
| -rw-r--r-- | proto/bgp/bgp.h | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h index 2808d479..2e95037c 100644 --- a/proto/bgp/bgp.h +++ b/proto/bgp/bgp.h @@ -96,8 +96,9 @@ struct bgp_config { u32 default_med; /* Default value for MULTI_EXIT_DISC attribute */ int capabilities; /* Enable capability handshake [RFC 5492] */ int enable_refresh; /* Enable local support for route refresh [RFC 2918] */ + int enable_enhanced_refresh; /* Enable local support for enhanced route refresh [RFC 7313] */ int enable_as4; /* Enable local support for 4B AS numbers [RFC 6793] */ - int enable_extended_messages; /* Enable local support for extended messages [draft] */ + int enable_extended_messages; /* Enable local support for extended messages [RFC 8654] */ int enable_hostname; /* Enable local support for hostname [draft] */ u32 rr_cluster_id; /* Route reflector cluster ID, if different from local ID */ int rr_client; /* Whether neighbor is RR client of me */ @@ -108,6 +109,7 @@ struct bgp_config { int interpret_communities; /* Hardwired handling of well-known communities */ int allow_local_as; /* Allow that number of local ASNs in incoming AS_PATHs */ int allow_local_pref; /* Allow LOCAL_PREF in EBGP sessions */ + int allow_med; /* Allow BGP_MED in EBGP sessions */ int allow_as_sets; /* Allow AS_SETs in incoming AS_PATHs */ int enforce_first_as; /* Enable check for neighbor AS as first AS in AS_PATH */ int gr_mode; /* Graceful restart mode (BGP_GR_*) */ @@ -231,7 +233,7 @@ struct bgp_af_caps { u8 llgr_able; /* Long-lived GR, RFC draft */ u32 llgr_time; /* Long-lived GR stale time */ u8 llgr_flags; /* Long-lived GR per-AF flags */ - u8 ext_next_hop; /* Extended IPv6 next hop, RFC 5549 */ + u8 ext_next_hop; /* Extended IPv6 next hop, RFC 8950 */ u8 add_path; /* Multiple paths support, RFC 7911 */ }; @@ -239,7 +241,7 @@ struct bgp_caps { u32 as4_number; /* Announced ASN */ u8 as4_support; /* Four-octet AS capability, RFC 6793 */ - u8 ext_messages; /* Extended message length, RFC draft */ + u8 ext_messages; /* Extended message length, RFC 8654 */ u8 route_refresh; /* Route refresh capability, RFC 2918 */ u8 enhanced_refresh; /* Enhanced route refresh, RFC 7313 */ u8 role; /* BGP role capability, RFC 9234 */ @@ -286,6 +288,11 @@ struct bgp_conn { u8 ext_messages; /* Session uses extended message length */ u32 received_as; /* ASN received in OPEN message */ + byte *local_open_msg; /* Saved OPEN messages (no header) */ + byte *remote_open_msg; + uint local_open_length; + uint remote_open_length; + struct bgp_caps *local_caps; struct bgp_caps *remote_caps; timer *connect_timer; @@ -433,6 +440,7 @@ struct bgp_write_state { int as4_session; int add_path; int mpls; + int sham; eattr *mp_next_hop; const adata *mpls_labels; @@ -485,6 +493,7 @@ struct bgp_parse_state { #define BGP_PORT 179 #define BGP_VERSION 4 #define BGP_HEADER_LENGTH 19 +#define BGP_HDR_MARKER_LENGTH 16 #define BGP_MAX_MESSAGE_LENGTH 4096 #define BGP_MAX_EXT_MSG_LENGTH 65535 #define BGP_RX_BUFFER_SIZE 4096 @@ -495,6 +504,13 @@ struct bgp_parse_state { #define BGP_CF_WALK_CHANNELS(P,C) WALK_LIST(C, P->c.channels) if (C->c.channel == &channel_bgp) #define BGP_WALK_CHANNELS(P,C) WALK_LIST(C, P->p.channels) if (C->c.channel == &channel_bgp) +#define BGP_MSG_HDR_MARKER_SIZE 16 +#define BGP_MSG_HDR_MARKER_POS 0 +#define BGP_MSG_HDR_LENGTH_SIZE 2 +#define BGP_MSG_HDR_LENGTH_POS BGP_MSG_HDR_MARKER_SIZE +#define BGP_MSG_HDR_TYPE_SIZE 1 +#define BGP_MSG_HDR_TYPE_POS (BGP_MSG_HDR_MARKER_SIZE + BGP_MSG_HDR_LENGTH_SIZE) + static inline int bgp_channel_is_ipv4(struct bgp_channel *c) { return BGP_AFI(c->afi) == BGP_AFI_IPV4; } @@ -541,6 +557,8 @@ void bgp_store_error(struct bgp_proto *p, struct bgp_conn *c, u8 class, u32 code void bgp_stop(struct bgp_proto *p, int subcode, byte *data, uint len); const char *bgp_format_role_name(u8 role); +void bgp_fix_attr_flags(ea_list *attrs); + static inline int rte_resolvable(rte *rt) { @@ -587,10 +605,13 @@ bgp_set_attr_data(ea_list **to, struct linpool *pool, uint code, uint flags, voi bgp_set_attr(to, pool, code, flags, (uintptr_t) a); } -#define bgp_unset_attr(to, pool, code) ea_unset_attr(to, pool, 0, code) +static inline void +bgp_unset_attr(ea_list **to, struct linpool *pool, uint code) +{ ea_unset_attr(to, pool, 0, EA_CODE(PROTOCOL_BGP, code)); } int bgp_encode_mp_reach_mrt(struct bgp_write_state *s, eattr *a, byte *buf, uint size); +const char * bgp_attr_name(uint code); int bgp_encode_attrs(struct bgp_write_state *s, ea_list *attrs, byte *buf, byte *end); ea_list * bgp_decode_attrs(struct bgp_parse_state *s, byte *data, uint len); void bgp_finish_attrs(struct bgp_parse_state *s, rta *a); @@ -616,6 +637,8 @@ int bgp_get_attr(const struct eattr *e, byte *buf, int buflen); void bgp_get_route_info(struct rte *, byte *buf); int bgp_total_aigp_metric_(rte *e, u64 *metric, const struct adata **ad); +byte * bgp_bmp_encode_rte(struct bgp_channel *c, byte *buf, const net_addr *n, const struct rte *new, const struct rte_src *src); + #define BGP_AIGP_METRIC 1 #define BGP_AIGP_MAX U64(0xffffffffffffffff) @@ -644,6 +667,7 @@ const char * bgp_error_dsc(unsigned code, unsigned subcode); void bgp_log_error(struct bgp_proto *p, u8 class, char *msg, unsigned code, unsigned subcode, byte *data, unsigned len); void bgp_update_next_hop(struct bgp_export_state *s, eattr *a, ea_list **to); +byte *bgp_create_end_mark_(struct bgp_channel *c, byte *buf); /* Packet types */ |