/* * BIRD Internet Routing Daemon -- Internal Data Types * * (c) 2022 Maria Matejka <mq@jmq.cz> * * Can be freely distributed and used under the terms of the GNU GPL. */ #ifndef _BIRD_TYPE_H_ #define _BIRD_TYPE_H_ #include "lib/birdlib.h" #include "lib/attrs.h" union bval { #define BVAL_ITEMS \ struct { \ u32 data; /* Integer type inherited from eattrs */ \ PADDING(data, 0, 4); /* Must be padded on 64-bits */ \ }; \ struct { \ u32 i; /* Integer type inherited from filters */ \ PADDING(i, 0, 4); /* Must be padded on 64-bits */ \ }; \ const struct adata *ptr; /* Generic attribute data inherited from eattrs */ \ const struct adata *ad; /* Generic attribute data inherited from filters */ \ BVAL_ITEMS; }; union bval_long { union bval bval; /* For direct assignments */ BVAL_ITEMS; /* For item-wise access */ u64 ec; lcomm lc; ip_addr ip; const net_addr *net; const char *s; const struct f_tree *t; const struct f_trie *ti; const struct f_path_mask *path_mask; struct f_path_mask_item pmi; }; /* Internal types */ enum btype { /* Nothing. Simply nothing. */ T_VOID = 0, /* Something but inaccessible. */ T_OPAQUE = 0x02, /* Opaque byte string (not filterable) */ T_IFACE = 0x0c, /* Pointer to an interface (inside adata) */ T_NEXTHOP_LIST = 0x2c, /* The whole nexthop block */ T_HOSTENTRY = 0x2e, /* Hostentry with possible MPLS labels */ /* Types shared with eattrs */ T_INT = 0x01, /* 32-bit unsigned integer number */ T_IP = 0x04, /* IP address */ T_QUAD = 0x05, /* Router ID (IPv4 address) */ T_PATH = 0x06, /* BGP AS path (encoding per RFC 1771:4.3) */ T_CLIST = 0x0a, /* Set of u32's (e.g., a community list) */ T_ECLIST = 0x0e, /* Set of pairs of u32's - ext. community list */ T_LCLIST = 0x08, /* Set of triplets of u32's - large community list */ T_ENUM_BGP_ORIGIN = 0x11, /* BGP Origin enum */ T_ENUM_RA_PREFERENCE = 0x13, /* RA Preference enum */ T_ENUM_FLOWSPEC_VALID = 0x15, /* Flowspec validation result */ #define EAF_TYPE__MAX 0x1f #define EAF_EMBEDDED 0x01 /* Data stored in eattr.u.data (part of type spec) */ /* Otherwise, attribute data is adata */ /* Other user visible types which fit in int */ T_BOOL = 0xa0, T_PAIR = 0xa4, /* Notice that pair is stored as integer: first << 16 | second */ /* Put enumerational types in 0x20..0x3f range */ T_ENUM_LO = 0x10, T_ENUM_HI = 0x3f, T_ENUM_RTS = 0x31, T_ENUM_SCOPE = 0x33, T_ENUM_RTD = 0x37, T_ENUM_ROA = 0x39, T_ENUM_NETTYPE = 0x3b, T_ENUM_AF = 0x3d, /* new enums go here */ #define T_ENUM T_ENUM_LO ... T_ENUM_HI /* Bigger ones */ T_NET = 0xb0, T_STRING = 0xb4, T_PATH_MASK = 0xb8, /* mask for BGP path */ T_EC = 0xbc, /* Extended community value, u64 */ T_LC = 0xc0, /* Large community value, lcomm */ T_RD = 0xc4, /* Route distinguisher for VPN addresses */ T_PATH_MASK_ITEM = 0xc8, /* Path mask item for path mask constructors */ T_SET = 0x80, T_PREFIX_SET = 0x84, } PACKED; typedef enum btype btype; STATIC_ASSERT(sizeof(btype) == sizeof(byte)); #endif