[mirror_frr.git] / bgpd / bgp_attr.h

/* BGP attributes. 
   Copyright (C) 1996, 97, 98 Kunihiro Ishiguro

This file is part of GNU Zebra.

GNU Zebra is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.

GNU Zebra is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Zebra; see the file COPYING.  If not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.  */

#ifndef _QUAGGA_BGP_ATTR_H
#define _QUAGGA_BGP_ATTR_H

/* Simple bit mapping. */
#define BITMAP_NBBY 8

#define SET_BITMAP(MAP, NUM) \
        SET_FLAG (MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))

#define CHECK_BITMAP(MAP, NUM) \
        CHECK_FLAG (MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))

#define BGP_MED_MAX UINT32_MAX


/* BGP Attribute type range. */
#define BGP_ATTR_TYPE_RANGE     256
#define BGP_ATTR_BITMAP_SIZE    (BGP_ATTR_TYPE_RANGE / BITMAP_NBBY)

/* BGP Attribute flags. */
#define BGP_ATTR_FLAG_OPTIONAL  0x80	/* Attribute is optional. */
#define BGP_ATTR_FLAG_TRANS     0x40	/* Attribute is transitive. */
#define BGP_ATTR_FLAG_PARTIAL   0x20	/* Attribute is partial. */
#define BGP_ATTR_FLAG_EXTLEN    0x10	/* Extended length flag. */

/* BGP attribute header must bigger than 2. */
#define BGP_ATTR_MIN_LEN        3       /* Attribute flag, type length. */
#define BGP_ATTR_DEFAULT_WEIGHT 32768

/* Valid lengths for mp_nexthop_len */
#define BGP_ATTR_NHLEN_IPV4               IPV4_MAX_BYTELEN
#define BGP_ATTR_NHLEN_VPNV4              8+IPV4_MAX_BYTELEN
#define BGP_ATTR_NHLEN_IPV6_GLOBAL        IPV6_MAX_BYTELEN
#define BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL (IPV6_MAX_BYTELEN * 2)
#define BGP_ATTR_NHLEN_VPNV6_GLOBAL       8+IPV6_MAX_BYTELEN
#define BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL ((8+IPV6_MAX_BYTELEN) * 2)


struct bgp_attr_encap_subtlv {
    struct bgp_attr_encap_subtlv	*next;		/* for chaining */
    uint16_t				type;
    uint16_t				length;
    uint8_t				value[1];	/* will be extended */
};

/* Additional/uncommon BGP attributes.
 * lazily allocated as and when a struct attr
 * requires it.
 */
struct attr_extra
{
  /* Multi-Protocol Nexthop, AFI IPv6 */
  struct in6_addr mp_nexthop_global;
  struct in6_addr mp_nexthop_local;

  /* Extended Communities attribute. */
  struct ecommunity *ecommunity;
  
  /* Route-Reflector Cluster attribute */
  struct cluster_list *cluster;
  
  /* Unknown transitive attribute. */
  struct transit *transit;

  struct in_addr mp_nexthop_global_in;
  
  /* Aggregator Router ID attribute */
  struct in_addr aggregator_addr;
  
  /* Route Reflector Originator attribute */
  struct in_addr originator_id;
  
  /* Local weight, not actually an attribute */
  u_int32_t weight;
  
  /* Aggregator ASN */
  as_t aggregator_as;
  
  /* MP Nexthop length */
  u_char mp_nexthop_len;

  /* MP Nexthop preference */
  u_char mp_nexthop_prefer_global;

  /* route tag */
  u_short tag;

  uint16_t			encap_tunneltype;	/* grr */
  struct bgp_attr_encap_subtlv *encap_subtlvs;		/* rfc5512 */
};

/* BGP core attribute structure. */
struct attr
{
  /* AS Path structure */
  struct aspath *aspath;

  /* Community structure */
  struct community *community;	
  
  /* Lazily allocated pointer to extra attributes */
  struct attr_extra *extra;
  
  /* Reference count of this attribute. */
  unsigned long refcnt;

  /* Flag of attribute is set or not. */
  u_int32_t flag;
  
  /* Apart from in6_addr, the remaining static attributes */
  struct in_addr nexthop;
  u_int32_t med;
  u_int32_t local_pref;
  ifindex_t nh_ifindex;
  
  /* Path origin attribute */
  u_char origin;

  /* has the route-map changed any attribute?
     Used on the peer outbound side. */
  u_int32_t rmap_change_flags;
};

/* rmap_change_flags definition */
#define BATTR_RMAP_IPV4_NHOP_CHANGED (1 << 0)
#define BATTR_RMAP_NEXTHOP_PEER_ADDRESS (1 << 1)
#define BATTR_REFLECTED (1 << 2)
#define BATTR_RMAP_NEXTHOP_UNCHANGED (1 << 3)
#define BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED (1 << 4)
#define BATTR_RMAP_IPV6_LL_NHOP_CHANGED (1 << 5)

/* Router Reflector related structure. */
struct cluster_list
{
  unsigned long refcnt;
  int length;
  struct in_addr *list;
};

/* Unknown transit attribute. */
struct transit
{
  unsigned long refcnt;
  int length;
  u_char *val;
};

#define ATTR_FLAG_BIT(X)  (1 << ((X) - 1))

#define BGP_CLUSTER_LIST_LENGTH(attr)				\
  (((attr)->flag & ATTR_FLAG_BIT(BGP_ATTR_CLUSTER_LIST)) ?	\
   (attr)->extra->cluster->length : 0)

typedef enum {
 BGP_ATTR_PARSE_PROCEED = 0,
 BGP_ATTR_PARSE_ERROR = -1,
 BGP_ATTR_PARSE_WITHDRAW = -2,

 /* only used internally, send notify + convert to BGP_ATTR_PARSE_ERROR */
 BGP_ATTR_PARSE_ERROR_NOTIFYPLS = -3,
} bgp_attr_parse_ret_t;

struct bpacket_attr_vec_arr;

/* Prototypes. */
extern void bgp_attr_init (void);
extern void bgp_attr_finish (void);
extern bgp_attr_parse_ret_t bgp_attr_parse (struct peer *, struct attr *,
                                           bgp_size_t, struct bgp_nlri *,
                                           struct bgp_nlri *);
extern struct attr_extra *bgp_attr_extra_get (struct attr *);
extern void bgp_attr_extra_free (struct attr *);
extern void bgp_attr_dup (struct attr *, struct attr *);
extern void bgp_attr_deep_dup (struct attr *, struct attr *);
extern void bgp_attr_deep_free (struct attr *);
extern struct attr *bgp_attr_intern (struct attr *attr);
extern struct attr *bgp_attr_refcount (struct attr *attr);
extern void bgp_attr_unintern_sub (struct attr *);
extern void bgp_attr_unintern (struct attr **);
extern void bgp_attr_flush (struct attr *);
extern struct attr *bgp_attr_default_set (struct attr *attr, u_char);
extern struct attr *bgp_attr_default_intern (u_char);
extern struct attr *bgp_attr_aggregate_intern (struct bgp *, u_char,
                                        struct aspath *, 
                                        struct community *, int as_set, u_char);
extern bgp_size_t bgp_packet_attribute (struct bgp *bgp, struct peer *,
					struct stream *, struct attr *,
					struct bpacket_attr_vec_arr *vecarr,
					struct prefix *, afi_t, safi_t,
					struct peer *, struct prefix_rd *,
					u_char *, int, u_int32_t);
extern void bgp_dump_routes_attr (struct stream *, struct attr *,
                                  struct prefix *);
extern int attrhash_cmp (const void *, const void *);
extern unsigned int attrhash_key_make (void *);
extern void attr_show_all (struct vty *);
extern unsigned long int attr_count (void);
extern unsigned long int attr_unknown_count (void);

/* Cluster list prototypes. */
extern int cluster_loop_check (struct cluster_list *, struct in_addr);
extern void cluster_unintern (struct cluster_list *);

/* Transit attribute prototypes. */
void transit_unintern (struct transit *);

/* Below exported for unit-test purposes only */
struct bgp_attr_parser_args {
  struct peer *peer;
  bgp_size_t length; /* attribute data length; */
  bgp_size_t total; /* total length, inc header */
  struct attr *attr;
  u_int8_t type;
  u_int8_t flags;
  u_char *startp;   
};
extern int bgp_mp_reach_parse (struct bgp_attr_parser_args *args, 
			       struct bgp_nlri *);
extern int bgp_mp_unreach_parse (struct bgp_attr_parser_args *args,
                                 struct bgp_nlri *);

extern struct bgp_attr_encap_subtlv *
encap_tlv_dup(struct bgp_attr_encap_subtlv *orig);

extern void
bgp_attr_flush_encap(struct attr *attr);

/**
 * Set of functions to encode MP_REACH_NLRI and MP_UNREACH_NLRI attributes.
 * Typical call sequence is to call _start(), followed by multiple _prefix(),
 * one for each NLRI that needs to be encoded into the UPDATE message, and
 * finally the _end() function.
 */
extern size_t bgp_packet_mpattr_start(struct stream *s, afi_t afi, safi_t safi,
                                      afi_t nh_afi,
                                      struct bpacket_attr_vec_arr *vecarr,
				      struct attr *attr);
extern void bgp_packet_mpattr_prefix(struct stream *s, afi_t afi, safi_t safi,
				     struct prefix *p, struct prefix_rd *prd,
				     u_char *tag, int addpath_encode,
                                     u_int32_t addpath_tx_id);
extern size_t bgp_packet_mpattr_prefix_size(afi_t afi, safi_t safi,
                                            struct prefix *p);
extern void bgp_packet_mpattr_end(struct stream *s, size_t sizep);

extern size_t bgp_packet_mpunreach_start (struct stream *s, afi_t afi,
					  safi_t safi);
extern void bgp_packet_mpunreach_prefix (struct stream *s, struct prefix *p,
			     afi_t afi, safi_t safi, struct prefix_rd *prd,
			     u_char *tag, int, u_int32_t);
extern void bgp_packet_mpunreach_end (struct stream *s, size_t attrlen_pnt);

static inline int
bgp_rmap_nhop_changed(u_int32_t out_rmap_flags, u_int32_t in_rmap_flags)
{
  return ((CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_PEER_ADDRESS) ||
           CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED) ||
           CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV4_NHOP_CHANGED) ||
           CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED) ||
           CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_LL_NHOP_CHANGED) ||
           CHECK_FLAG(in_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED)) ? 1 : 0);
}

#endif /* _QUAGGA_BGP_ATTR_H */
Commit	Line	Data
718e3744	1	/* BGP attributes.
	2	Copyright (C) 1996, 97, 98 Kunihiro Ishiguro
	3
	4	This file is part of GNU Zebra.
	5
	6	GNU Zebra is free software; you can redistribute it and/or modify it
	7	under the terms of the GNU General Public License as published by the
	8	Free Software Foundation; either version 2, or (at your option) any
	9	later version.
	10
	11	GNU Zebra is distributed in the hope that it will be useful, but
	12	WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GNU Zebra; see the file COPYING. If not, write to the Free
	18	Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
	19	02111-1307, USA. */
	20
00d252cb	21	#ifndef _QUAGGA_BGP_ATTR_H
	22	#define _QUAGGA_BGP_ATTR_H
	23
718e3744	24	/* Simple bit mapping. */
	25	#define BITMAP_NBBY 8
	26
	27	#define SET_BITMAP(MAP, NUM) \
	28	SET_FLAG (MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))
	29
	30	#define CHECK_BITMAP(MAP, NUM) \
	31	CHECK_FLAG (MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))
	32
3b424979	33	#define BGP_MED_MAX UINT32_MAX
3b424979	34
03e214c8	35
718e3744	36	/* BGP Attribute type range. */
	37	#define BGP_ATTR_TYPE_RANGE 256
	38	#define BGP_ATTR_BITMAP_SIZE (BGP_ATTR_TYPE_RANGE / BITMAP_NBBY)
	39
	40	/* BGP Attribute flags. */
	41	#define BGP_ATTR_FLAG_OPTIONAL 0x80 /* Attribute is optional. */
	42	#define BGP_ATTR_FLAG_TRANS 0x40 /* Attribute is transitive. */
	43	#define BGP_ATTR_FLAG_PARTIAL 0x20 /* Attribute is partial. */
	44	#define BGP_ATTR_FLAG_EXTLEN 0x10 /* Extended length flag. */
	45
	46	/* BGP attribute header must bigger than 2. */
370b64a2	47	#define BGP_ATTR_MIN_LEN 3 /* Attribute flag, type length. */
03e214c8 PJ	48	#define BGP_ATTR_DEFAULT_WEIGHT 32768
03e214c8 PJ	49
801a9bcc DS	50	/* Valid lengths for mp_nexthop_len */
801a9bcc DS	51	#define BGP_ATTR_NHLEN_IPV4 IPV4_MAX_BYTELEN
945c8fe9	52	#define BGP_ATTR_NHLEN_VPNV4 8+IPV4_MAX_BYTELEN
801a9bcc DS	53	#define BGP_ATTR_NHLEN_IPV6_GLOBAL IPV6_MAX_BYTELEN
801a9bcc DS	54	#define BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL (IPV6_MAX_BYTELEN * 2)
945c8fe9 LB	55	#define BGP_ATTR_NHLEN_VPNV6_GLOBAL 8+IPV6_MAX_BYTELEN
945c8fe9 LB	56	#define BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL ((8+IPV6_MAX_BYTELEN) * 2)
801a9bcc	57
f4c89855 LB	58
	59	struct bgp_attr_encap_subtlv {
	60	struct bgp_attr_encap_subtlv next; / for chaining */
	61	uint16_t type;
	62	uint16_t length;
	63	uint8_t value[1]; /* will be extended */
	64	};
	65
fb982c25 PJ	66	/* Additional/uncommon BGP attributes.
	67	* lazily allocated as and when a struct attr
	68	* requires it.
	69	*/
	70	struct attr_extra
718e3744	71	{
fb982c25	72	/* Multi-Protocol Nexthop, AFI IPv6 */
718e3744	73	struct in6_addr mp_nexthop_global;
718e3744	74	struct in6_addr mp_nexthop_local;
718e3744	75
718e3744	76	/* Extended Communities attribute. */
718e3744	77	struct ecommunity *ecommunity;
cbdfbaa5 PJ	78
	79	/* Route-Reflector Cluster attribute */
	80	struct cluster_list *cluster;
	81
718e3744	82	/* Unknown transitive attribute. */
718e3744	83	struct transit *transit;
cbdfbaa5	84
fb982c25	85	struct in_addr mp_nexthop_global_in;
fb982c25 PJ	86
	87	/* Aggregator Router ID attribute */
	88	struct in_addr aggregator_addr;
	89
	90	/* Route Reflector Originator attribute */
	91	struct in_addr originator_id;
	92
	93	/* Local weight, not actually an attribute */
	94	u_int32_t weight;
	95
	96	/* Aggregator ASN */
	97	as_t aggregator_as;
	98
	99	/* MP Nexthop length */
	100	u_char mp_nexthop_len;
0d9551dc	101
161995ea DS	102	/* MP Nexthop preference */
	103	u_char mp_nexthop_prefer_global;
	104
0d9551dc DS	105	/* route tag */
0d9551dc DS	106	u_short tag;
f4c89855 LB	107
	108	uint16_t encap_tunneltype; /* grr */
	109	struct bgp_attr_encap_subtlv encap_subtlvs; / rfc5512 */
fb982c25 PJ	110	};
	111
	112	/* BGP core attribute structure. */
	113	struct attr
	114	{
	115	/* AS Path structure */
	116	struct aspath *aspath;
	117
	118	/* Community structure */
	119	struct community *community;
	120
	121	/* Lazily allocated pointer to extra attributes */
	122	struct attr_extra *extra;
	123
cbdfbaa5 PJ	124	/* Reference count of this attribute. */
	125	unsigned long refcnt;
	126
	127	/* Flag of attribute is set or not. */
	128	u_int32_t flag;
	129
	130	/* Apart from in6_addr, the remaining static attributes */
	131	struct in_addr nexthop;
	132	u_int32_t med;
	133	u_int32_t local_pref;
b892f1dd	134	ifindex_t nh_ifindex;
41367172	135
fb982c25	136	/* Path origin attribute */
cbdfbaa5	137	u_char origin;
3f9c7369 DS	138
	139	/* has the route-map changed any attribute?
	140	Used on the peer outbound side. */
	141	u_int32_t rmap_change_flags;
718e3744	142	};
718e3744	143
3f9c7369	144	/* rmap_change_flags definition */
3811f1e2	145	#define BATTR_RMAP_IPV4_NHOP_CHANGED (1 << 0)
3f9c7369 DS	146	#define BATTR_RMAP_NEXTHOP_PEER_ADDRESS (1 << 1)
3f9c7369 DS	147	#define BATTR_REFLECTED (1 << 2)
316e074d	148	#define BATTR_RMAP_NEXTHOP_UNCHANGED (1 << 3)
3811f1e2 DS	149	#define BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED (1 << 4)
3811f1e2 DS	150	#define BATTR_RMAP_IPV6_LL_NHOP_CHANGED (1 << 5)
3f9c7369	151
718e3744	152	/* Router Reflector related structure. */
	153	struct cluster_list
	154	{
	155	unsigned long refcnt;
	156	int length;
	157	struct in_addr *list;
	158	};
	159
	160	/* Unknown transit attribute. */
	161	struct transit
	162	{
	163	unsigned long refcnt;
	164	int length;
	165	u_char *val;
	166	};
	167
	168	#define ATTR_FLAG_BIT(X) (1 << ((X) - 1))
	169
5e242b0d DS	170	#define BGP_CLUSTER_LIST_LENGTH(attr) \
	171	(((attr)->flag & ATTR_FLAG_BIT(BGP_ATTR_CLUSTER_LIST)) ? \
	172	(attr)->extra->cluster->length : 0)
	173
b881c707 PJ	174	typedef enum {
	175	BGP_ATTR_PARSE_PROCEED = 0,
	176	BGP_ATTR_PARSE_ERROR = -1,
	177	BGP_ATTR_PARSE_WITHDRAW = -2,
f57000c0 DL	178
	179	/* only used internally, send notify + convert to BGP_ATTR_PARSE_ERROR */
	180	BGP_ATTR_PARSE_ERROR_NOTIFYPLS = -3,
b881c707 PJ	181	} bgp_attr_parse_ret_t;
b881c707 PJ	182
3f9c7369 DS	183	struct bpacket_attr_vec_arr;
3f9c7369 DS	184
718e3744	185	/* Prototypes. */
94f2b392	186	extern void bgp_attr_init (void);
228da428	187	extern void bgp_attr_finish (void);
b881c707 PJ	188	extern bgp_attr_parse_ret_t bgp_attr_parse (struct peer , struct attr ,
b881c707 PJ	189	bgp_size_t, struct bgp_nlri *,
52a51fd3	190	struct bgp_nlri *);
fb982c25 PJ	191	extern struct attr_extra bgp_attr_extra_get (struct attr );
	192	extern void bgp_attr_extra_free (struct attr *);
	193	extern void bgp_attr_dup (struct attr , struct attr );
73ac8160 DS	194	extern void bgp_attr_deep_dup (struct attr , struct attr );
73ac8160 DS	195	extern void bgp_attr_deep_free (struct attr *);
94f2b392	196	extern struct attr bgp_attr_intern (struct attr attr);
3f9c7369	197	extern struct attr bgp_attr_refcount (struct attr attr);
b881c707	198	extern void bgp_attr_unintern_sub (struct attr *);
f6f434b2	199	extern void bgp_attr_unintern (struct attr **);
94f2b392	200	extern void bgp_attr_flush (struct attr *);
	201	extern struct attr bgp_attr_default_set (struct attr attr, u_char);
	202	extern struct attr *bgp_attr_default_intern (u_char);
	203	extern struct attr bgp_attr_aggregate_intern (struct bgp , u_char,
5228ad27	204	struct aspath *,
42f7e184	205	struct community *, int as_set, u_char);
8c71e481 PM	206	extern bgp_size_t bgp_packet_attribute (struct bgp bgp, struct peer ,
8c71e481 PM	207	struct stream , struct attr ,
3f9c7369	208	struct bpacket_attr_vec_arr *vecarr,
8c71e481 PM	209	struct prefix *, afi_t, safi_t,
8c71e481 PM	210	struct peer , struct prefix_rd ,
adbac85e	211	u_char *, int, u_int32_t);
94f2b392	212	extern void bgp_dump_routes_attr (struct stream , struct attr ,
adbac85e	213	struct prefix *);
ffe11cfb	214	extern int attrhash_cmp (const void , const void );
923de654	215	extern unsigned int attrhash_key_make (void *);
94f2b392	216	extern void attr_show_all (struct vty *);
cbdfbaa5 PJ	217	extern unsigned long int attr_count (void);
cbdfbaa5 PJ	218	extern unsigned long int attr_unknown_count (void);
718e3744	219
718e3744	220	/* Cluster list prototypes. */
94f2b392	221	extern int cluster_loop_check (struct cluster_list *, struct in_addr);
94f2b392	222	extern void cluster_unintern (struct cluster_list *);
718e3744	223
	224	/* Transit attribute prototypes. */
	225	void transit_unintern (struct transit *);
00d252cb	226
835315bf PJ	227	/* Below exported for unit-test purposes only */
	228	struct bgp_attr_parser_args {
	229	struct peer *peer;
	230	bgp_size_t length; /* attribute data length; */
	231	bgp_size_t total; /* total length, inc header */
	232	struct attr *attr;
	233	u_int8_t type;
	234	u_int8_t flags;
	235	u_char *startp;
	236	};
	237	extern int bgp_mp_reach_parse (struct bgp_attr_parser_args *args,
	238	struct bgp_nlri *);
	239	extern int bgp_mp_unreach_parse (struct bgp_attr_parser_args *args,
	240	struct bgp_nlri *);
03292809	241
f4c89855 LB	242	extern struct bgp_attr_encap_subtlv *
	243	encap_tlv_dup(struct bgp_attr_encap_subtlv *orig);
	244
	245	extern void
	246	bgp_attr_flush_encap(struct attr *attr);
	247
8c71e481 PM	248	/**
	249	* Set of functions to encode MP_REACH_NLRI and MP_UNREACH_NLRI attributes.
	250	* Typical call sequence is to call _start(), followed by multiple _prefix(),
	251	* one for each NLRI that needs to be encoded into the UPDATE message, and
	252	* finally the _end() function.
	253	*/
	254	extern size_t bgp_packet_mpattr_start(struct stream *s, afi_t afi, safi_t safi,
8a92a8a0 DS	255	afi_t nh_afi,
8a92a8a0 DS	256	struct bpacket_attr_vec_arr *vecarr,
8c71e481 PM	257	struct attr *attr);
	258	extern void bgp_packet_mpattr_prefix(struct stream *s, afi_t afi, safi_t safi,
	259	struct prefix p, struct prefix_rd prd,
adbac85e DW	260	u_char *tag, int addpath_encode,
adbac85e DW	261	u_int32_t addpath_tx_id);
93b73dfa LB	262	extern size_t bgp_packet_mpattr_prefix_size(afi_t afi, safi_t safi,
93b73dfa LB	263	struct prefix *p);
8c71e481 PM	264	extern void bgp_packet_mpattr_end(struct stream *s, size_t sizep);
	265
	266	extern size_t bgp_packet_mpunreach_start (struct stream *s, afi_t afi,
	267	safi_t safi);
	268	extern void bgp_packet_mpunreach_prefix (struct stream s, struct prefix p,
	269	afi_t afi, safi_t safi, struct prefix_rd *prd,
adbac85e	270	u_char *tag, int, u_int32_t);
8c71e481 PM	271	extern void bgp_packet_mpunreach_end (struct stream *s, size_t attrlen_pnt);
8c71e481 PM	272
3811f1e2 DS	273	static inline int
	274	bgp_rmap_nhop_changed(u_int32_t out_rmap_flags, u_int32_t in_rmap_flags)
	275	{
	276	return ((CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_PEER_ADDRESS) \|\|
	277	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED) \|\|
	278	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV4_NHOP_CHANGED) \|\|
	279	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED) \|\|
	280	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_LL_NHOP_CHANGED) \|\|
	281	CHECK_FLAG(in_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED)) ? 1 : 0);
	282	}
	283
00d252cb	284	#endif /* _QUAGGA_BGP_ATTR_H */