mirror of
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117 lines
4.0 KiB
C
117 lines
4.0 KiB
C
/*
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* BIRD -- Multi-Threaded Routing Toolkit (MRT) Routing Information Export Format
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*
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* (c) 2015 CZ.NIC z.s.p.o.
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_MRTDUMP_H_
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#define _BIRD_MRTDUMP_H_
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#include <limits.h>
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#include "nest/protocol.h"
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#include "lib/lists.h"
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#include "nest/route.h"
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#include "lib/event.h"
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#define MRT_HDR_LENGTH 12 /* MRT Timestamp + MRT Type + MRT Subtype + MRT Load Length */
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#define MRT_PEER_TYPE_32BIT_ASN 2 /* MRT Table Dump: Peer Index Table: Peer Type: Use 32bit ASN */
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#define MRT_PEER_TYPE_IPV6 1 /* MRT Table Dump: Peer Index Table: Peer Type: Use IPv6 IP Address */
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#ifdef PATH_MAX
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#define BIRD_PATH_MAX PATH_MAX
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#else
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#define BIRD_PATH_MAX 4096
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#endif
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/* MRT Types */
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#define MRT_TABLE_DUMP_V2 13
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#define MRT_BGP4MP 16
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/* MRT Table Dump v2 Subtypes */
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#define MRT_PEER_INDEX_TABLE 1
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#define MRT_RIB_IPV4_UNICAST 2
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#define MRT_RIB_IPV4_MULTICAST 3
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#define MRT_RIB_IPV6_UNICAST 4
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#define MRT_RIB_IPV6_MULTICAST 5
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#define MRT_RIB_GENERIC 6
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#define MRT_RIB_IPV4_UNICAST_ADDPATH 8 /* Experimental draft-petrie-grow-mrt-add-paths */
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#define MRT_RIB_IPV4_MULTICAST_ADDPATH 9 /* Experimental draft-petrie-grow-mrt-add-paths */
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#define MRT_RIB_IPV6_UNICAST_ADDPATH 10 /* Experimental draft-petrie-grow-mrt-add-paths */
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#define MRT_RIB_IPV6_MULTICAST_ADDPATH 11 /* Experimental draft-petrie-grow-mrt-add-paths */
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#define MRT_RIB_GENERIC_ADDPATH 12 /* Experimental draft-petrie-grow-mrt-add-paths */
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#define MRT_RIB_NO_ADDPATH 0
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#define MRT_RIB_ADDPATH 1
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/* MRT BGP4MP Subtypes */
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#define MRT_BGP4MP_MESSAGE 1
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#define MRT_BGP4MP_MESSAGE_AS4 4
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#define MRT_BGP4MP_STATE_CHANGE_AS4 5
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#define MRT_BGP4MP_MESSAGE_ADDPATH 8 /* Experimental draft-petrie-grow-mrt-add-paths */
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#define MRT_BGP4MP_MESSAGE_AS4_ADDPATH 9 /* Experimental draft-petrie-grow-mrt-add-paths */
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struct mrt_buffer
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{
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byte *msg; /* Buffer with final formatted data */
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size_t msg_length; /* Size of used buffer */
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size_t msg_capacity; /* Number of allocated bytes in msg */
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#define MRT_BUFFER_DEFAULT_CAPACITY 64 /* Size in bytes */
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};
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struct mrt_peer_index_table
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{
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struct mrt_buffer msg;
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u16 peer_count; /* Datatype u16 should fit with the size 16bit in MRT packet */
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u32 peer_count_offset;
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};
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struct mrt_rib_table
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{
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struct mrt_buffer msg;
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int subtype; /* RIB_IPV4_UNICAST or RIB_IPV6_UNICAST */
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u16 entry_count; /* Number of RIB Entries */
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u32 entry_count_offset; /* Offset in msg->msg[?] to position where start the entries count */
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};
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struct mrt_rib_entry
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{
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u16 peer_index;
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u32 originated_time;
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u32 path_id; /* draft-petrie-grow-mrt-add-paths */
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u16 attributes_length;
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byte *attributes; /* encoded BGP attributes */
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};
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struct mrt_table_dump_ctx {
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struct rtable *rtable;
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struct fib_iterator fit;
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struct mrt_rib_table rib_table;
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u32 rib_sequence_number;
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struct rfile *rfile; /* tracking for mrt table dump file */
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char *file_path; /* full path for mrt table dump file */
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byte state;
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#define MRT_STATE_RUNNING 0
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#define MRT_STATE_COMPLETED 1
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event *step;
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struct mrt_table_individual_config config; /* Own special configuration of MRT */
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};
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void mrt_buffer_alloc(struct mrt_buffer *buf);
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void mrt_buffer_free(struct mrt_buffer *buf);
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void mrt_peer_index_table_header(struct mrt_peer_index_table *state, u32 collector_bgp_id, const char *name);
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void mrt_peer_index_table_add_peer(struct mrt_peer_index_table *state, u32 peer_bgp_id, u32 peer_as, ip_addr peer_ip_addr);
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void mrt_peer_index_table_dump(struct mrt_peer_index_table *state, int file_descriptor);
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void mrt_rib_table_alloc(struct mrt_rib_table *state);
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void mrt_rib_table_header(struct mrt_rib_table *state, u32 sequence_number, u8 prefix_length, ip_addr prefix, uint is_addpath);
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void mrt_rib_table_add_entry(struct mrt_rib_table *state, const struct mrt_rib_entry *entry);
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/* implemented in sysdep */
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void mrt_dump_message_proto(struct proto *p, u16 type, u16 subtype, byte *buf, u32 len);
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void mrt_dump_message(int file_descriptor, u16 type, u16 subtype, byte *buf, u32 len);
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#endif /* _BIRD_MRTDUMP_H_ */
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