mirror of
https://gitlab.nic.cz/labs/bird.git
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124 lines
3.4 KiB
C
124 lines
3.4 KiB
C
/*
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* BIRD Internet Routing Daemon -- Internal Data Types
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*
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* (c) 2022 Maria Matejka <mq@jmq.cz>
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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_TYPE_H_
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#define _BIRD_TYPE_H_
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#include "lib/birdlib.h"
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#include "lib/attrs.h"
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union bval {
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#define BVAL_ITEMS \
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struct { \
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u32 data; /* Integer type inherited from eattrs */ \
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PADDING(data, 0, 4); /* Must be padded on 64-bits */ \
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}; \
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struct { \
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u32 i; /* Integer type inherited from filters */ \
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PADDING(i, 0, 4); /* Must be padded on 64-bits */ \
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}; \
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const struct adata *ptr; /* Generic attribute data inherited from eattrs */ \
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const struct adata *ad; /* Generic attribute data inherited from filters */ \
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BVAL_ITEMS;
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};
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union bval_long {
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union bval bval; /* For direct assignments */
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BVAL_ITEMS; /* For item-wise access */
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u64 ec;
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lcomm lc;
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ip_addr ip;
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const net_addr *net;
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const char *s;
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const struct adata *bs;
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const struct f_tree *t;
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const struct f_trie *ti;
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const struct f_path_mask *path_mask;
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struct f_path_mask_item pmi;
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struct rte *rte;
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struct rte_block {
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struct rte **rte;
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uint len;
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} rte_block;
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};
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/* Internal types */
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enum btype {
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/* Nothing. Simply nothing. */
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T_VOID = 0,
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T_NONE = 0xff,
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/* Something but inaccessible. */
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T_OPAQUE = 0x02, /* Opaque byte string (not filterable) */
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T_IFACE = 0x0c, /* Pointer to an interface (inside adata) */
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T_ROUTES_BLOCK = 0x68, /* Block of route pointers */
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T_ROUTE = 0x6a, /* One route pointer */
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T_NEXTHOP_LIST = 0x6c, /* The whole nexthop block */
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T_HOSTENTRY = 0x6e, /* Hostentry with possible MPLS labels */
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/* Types shared with eattrs */
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T_INT = 0x01, /* 32-bit unsigned integer number */
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T_IP = 0x04, /* IP address */
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T_QUAD = 0x05, /* Router ID (IPv4 address) */
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T_PATH = 0x06, /* BGP AS path (encoding per RFC 1771:4.3) */
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T_CLIST = 0x0a, /* Set of u32's (e.g., a community list) */
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T_ECLIST = 0x0e, /* Set of pairs of u32's - ext. community list */
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T_LCLIST = 0x08, /* Set of triplets of u32's - large community list */
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T_STRING = 0x10,
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T_ENUM_BGP_ORIGIN = 0x13, /* BGP Origin enum */
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T_ENUM_RA_PREFERENCE = 0x15, /* RA Preference enum */
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T_ENUM_FLOWSPEC_VALID = 0x17, /* Flowspec validation result */
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#define EAF_TYPE__MAX 0x1f
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#define EAF_EMBEDDED 0x01 /* Data stored in eattr.u.data (part of type spec) */
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/* Otherwise, attribute data is adata */
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/* Other user visible types which fit in int */
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T_BOOL = 0xa0,
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T_PAIR = 0xa4, /* Notice that pair is stored as integer: first << 16 | second */
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/* Put enumerational types in 0x20..0x3f range */
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T_ENUM_LO = 0x12,
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T_ENUM_HI = 0x3f,
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T_ENUM_RTS = 0x31,
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T_ENUM_SCOPE = 0x33,
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T_ENUM_MPLS_POLICY = 0x35,
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T_ENUM_RTD = 0x37,
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T_ENUM_ROA = 0x39,
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T_ENUM_NETTYPE = 0x3b,
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T_ENUM_AF = 0x3d,
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/* new enums go here */
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#define T_ENUM T_ENUM_LO ... T_ENUM_HI
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/* Bigger ones */
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T_NET = 0xb0,
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T_PATH_MASK = 0xb8, /* mask for BGP path */
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T_EC = 0xbc, /* Extended community value, u64 */
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T_LC = 0xc0, /* Large community value, lcomm */
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T_RD = 0xc4, /* Route distinguisher for VPN addresses */
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T_PATH_MASK_ITEM = 0xc8, /* Path mask item for path mask constructors */
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T_BYTESTRING = 0xcc,
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T_SET = 0x80,
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T_PREFIX_SET = 0x84,
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} PACKED;
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typedef enum btype btype;
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STATIC_ASSERT(sizeof(btype) == sizeof(byte));
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#endif
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