/* * BIRD Internet Routing Daemon -- Attribute Operations * * (c) 2000 Martin Mares <mj@ucw.cz> * * Can be freely distributed and used under the terms of the GNU GPL. */ #ifndef _BIRD_ATTRS_H_ #define _BIRD_ATTRS_H_ #include <stdint.h> /* a-path.c */ #define AS_PATH_SET 1 /* Types of path segments */ #define AS_PATH_SEQUENCE 2 #define AS_PATH_CONFED_SEQUENCE 3 #define AS_PATH_CONFED_SET 4 #define AS_PATH_MAXLEN 10000 #define AS_TRANS 23456 /* AS_TRANS is used when we need to store 32bit ASN larger than 0xFFFF * to 16bit slot (like in 16bit AS_PATH). See RFC 4893 for details */ struct adata *as_path_prepend(struct linpool *pool, struct adata *olda, u32 as); int as_path_convert_to_old(struct adata *path, byte *dst, int *new_used); int as_path_convert_to_new(struct adata *path, byte *dst, int req_as); void as_path_format(struct adata *path, byte *buf, unsigned int size); int as_path_getlen(struct adata *path); int as_path_getlen_int(struct adata *path, int bs); int as_path_get_first(struct adata *path, u32 *orig_as); int as_path_get_last(struct adata *path, u32 *last_as); int as_path_is_member(struct adata *path, u32 as); #define PM_ASN 0 #define PM_QUESTION 1 #define PM_ASTERISK 2 #define PM_ASN_EXPR 3 struct f_path_mask { struct f_path_mask *next; int kind; uintptr_t val; }; int as_path_match(struct adata *path, struct f_path_mask *mask); /* a-set.c */ void int_set_format(struct adata *set, int way, byte *buf, unsigned int size); struct adata *int_set_add(struct linpool *pool, struct adata *list, u32 val); int int_set_contains(struct adata *list, u32 val); struct adata *int_set_del(struct linpool *pool, struct adata *list, u32 val); static inline int int_set_get_size(struct adata *list) { return list->length / 4; } #endif