48d79d521c
AS4 optional attribute errors were handled by session drop (according to BGP RFC). This patch implements error handling according to new BGP AS4 draft (*) - ignoring invalid AS4 optional attributes. (*) http://www.ietf.org/internet-drafts/draft-chen-rfc4893bis-02.txt
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
/*
|
|
* 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_
|
|
|
|
/* 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_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);
|
|
|
|
|
|
struct f_path_mask {
|
|
struct f_path_mask *next;
|
|
u32 val;
|
|
int any;
|
|
};
|
|
|
|
// #define PM_ANY -1
|
|
|
|
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
|