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/*
* 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 */
#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
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