Annotation of embedaddon/bird/proto/mrt/mrt.h, revision 1.1
1.1 ! misho 1: /*
! 2: * BIRD -- Multi-Threaded Routing Toolkit (MRT) Protocol
! 3: *
! 4: * (c) 2017--2018 Ondrej Zajicek <santiago@crfreenet.org>
! 5: * (c) 2017--2018 CZ.NIC z.s.p.o.
! 6: *
! 7: * Can be freely distributed and used under the terms of the GNU GPL.
! 8: */
! 9:
! 10: #ifndef _BIRD_MRT_H_
! 11: #define _BIRD_MRT_H_
! 12:
! 13: #include "nest/bird.h"
! 14: #include "nest/protocol.h"
! 15: #include "lib/lists.h"
! 16: #include "nest/route.h"
! 17: #include "lib/event.h"
! 18: #include "lib/hash.h"
! 19:
! 20:
! 21: struct mrt_config {
! 22: struct proto_config c;
! 23:
! 24: struct rtable_config *table_cf;
! 25: const char *table_expr;
! 26: struct filter *filter;
! 27: const char *filename;
! 28: uint period;
! 29: int always_add_path;
! 30: };
! 31:
! 32: struct mrt_proto {
! 33: struct proto p;
! 34: timer *timer;
! 35: event *event;
! 36:
! 37: struct mrt_target *file;
! 38: struct mrt_table_dump_state *table_dump;
! 39: };
! 40:
! 41: struct mrt_dump_data {
! 42: const char *table_expr;
! 43: struct rtable *table_ptr;
! 44: struct filter *filter;
! 45: char *filename;
! 46: };
! 47:
! 48: struct mrt_peer_entry {
! 49: u32 index;
! 50: u32 peer_id;
! 51: u32 peer_as;
! 52: ip_addr peer_ip;
! 53: struct mrt_peer_entry *next;
! 54: };
! 55:
! 56: struct mrt_table_dump_state {
! 57: struct mrt_proto *proto; /* Protocol for regular MRT dumps (or NULL) */
! 58: struct cli *cli; /* CLI for irregular MRT dumps (or NULL) */
! 59: struct config *config; /* Config valid during start of dump, locked */
! 60:
! 61: /* Configuration information */
! 62: const char *table_expr; /* Wildcard for table name (or NULL) */
! 63: struct rtable *table_ptr; /* Explicit table (or NULL) */
! 64: struct filter *filter; /* Optional filter */
! 65: const char *filename; /* Filename pattern */
! 66: int always_add_path; /* Always use *_ADDPATH message subtypes */
! 67:
! 68: /* Allocated by mrt_table_dump_init() */
! 69: pool *pool; /* Pool for table dump */
! 70: linpool *linpool; /* Temporary linear pool */
! 71: linpool *peer_lp; /* Linear pool for peer entries in peer_hash */
! 72: buffer buf; /* Buffer for MRT messages */
! 73:
! 74: HASH(struct mrt_peer_entry) peer_hash; /* Hash for peers to find the index */
! 75:
! 76: struct rtable *table; /* Processed table, NULL initially */
! 77: struct fib_iterator fit; /* Iterator in processed table */
! 78: int table_open; /* Whether iterator is linked */
! 79:
! 80: int add_path; /* Current message subtype is *_ADDPATH */
! 81: int want_add_path; /* Want *_ADDPATH message later */
! 82: int max; /* Decreasing counter of dumped routes */
! 83: u32 seqnum; /* MRT message sequence number */
! 84: bird_clock_t time_offset; /* Time offset between monotonic and real time */
! 85:
! 86: u16 peer_count; /* Number of peers */
! 87: u32 peer_count_offset; /* Buffer offset to store peer_count later */
! 88: u16 entry_count; /* Number of RIB Entries */
! 89: u32 entry_count_offset; /* Buffer offset to store entry_count later */
! 90:
! 91: struct rfile *file; /* tracking for mrt table dump file */
! 92: int fd;
! 93: };
! 94:
! 95: struct mrt_bgp_data {
! 96: uint peer_as;
! 97: uint local_as;
! 98: uint index;
! 99: uint af;
! 100: ip_addr peer_ip;
! 101: ip_addr local_ip;
! 102: byte *message;
! 103: uint msg_len;
! 104: uint old_state;
! 105: uint new_state;
! 106: u8 as4;
! 107: u8 add_path;
! 108: };
! 109:
! 110:
! 111: #define MRT_HDR_LENGTH 12 /* MRT Timestamp + MRT Type + MRT Subtype + MRT Load Length */
! 112: #define MRT_PEER_TYPE_32BIT_ASN 2 /* MRT Table Dump: Peer Index Table: Peer Type: Use 32bit ASN */
! 113: #define MRT_PEER_TYPE_IPV6 1 /* MRT Table Dump: Peer Index Table: Peer Type: Use IPv6 IP Address */
! 114:
! 115: #define MRT_ATTR_BUFFER_SIZE 65536
! 116:
! 117: /* MRT Types */
! 118: #define MRT_TABLE_DUMP_V2 13
! 119: #define MRT_BGP4MP 16
! 120:
! 121: /* MRT Table Dump v2 Subtypes */
! 122: #define MRT_PEER_INDEX_TABLE 1
! 123: #define MRT_RIB_IPV4_UNICAST 2
! 124: #define MRT_RIB_IPV4_MULTICAST 3
! 125: #define MRT_RIB_IPV6_UNICAST 4
! 126: #define MRT_RIB_IPV6_MULTICAST 5
! 127: #define MRT_RIB_GENERIC 6
! 128: #define MRT_RIB_IPV4_UNICAST_ADDPATH 8
! 129: #define MRT_RIB_IPV4_MULTICAST_ADDPATH 9
! 130: #define MRT_RIB_IPV6_UNICAST_ADDPATH 10
! 131: #define MRT_RIB_IPV6_MULTICAST_ADDPATH 11
! 132: #define MRT_RIB_GENERIC_ADDPATH 12
! 133:
! 134: /* MRT BGP4MP Subtypes */
! 135: #define MRT_BGP4MP_MESSAGE 1
! 136: #define MRT_BGP4MP_MESSAGE_AS4 4
! 137: #define MRT_BGP4MP_STATE_CHANGE_AS4 5
! 138: #define MRT_BGP4MP_MESSAGE_LOCAL 6
! 139: #define MRT_BGP4MP_MESSAGE_AS4_LOCAL 7
! 140: #define MRT_BGP4MP_MESSAGE_ADDPATH 8
! 141: #define MRT_BGP4MP_MESSAGE_AS4_ADDPATH 9
! 142: #define MRT_BGP4MP_MESSAGE_LOCAL_ADDPATH 10
! 143: #define MRT_BGP4MP_MESSAGE_AS4_LOCAL_ADDPATH 11
! 144:
! 145:
! 146: #ifdef CONFIG_MRT
! 147: void mrt_dump_cmd(struct mrt_dump_data *d);
! 148: void mrt_dump_bgp_message(struct mrt_bgp_data *d);
! 149: void mrt_dump_bgp_state_change(struct mrt_bgp_data *d);
! 150: void mrt_check_config(struct proto_config *C);
! 151: #else
! 152: static inline void mrt_dump_bgp_message(struct mrt_bgp_data *d UNUSED) { }
! 153: static inline void mrt_dump_bgp_state_change(struct mrt_bgp_data *d UNUSED) { }
! 154: #endif
! 155:
! 156: #endif /* _BIRD_MRT_H_ */
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