[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

#include "bgp_attr_evpn.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 */
    /* Reference count of this attribute. */
    unsigned long refcnt;
    uint16_t				type;
    uint16_t				length;
    uint8_t				value[1];	/* will be extended */
};

#if ENABLE_BGP_VNC
/*
 * old rfp<->rfapi representation
 */
struct bgp_tea_options {
    struct bgp_tea_options *next;
    uint8_t               options_count;
    uint16_t              options_length; /* each TLV may be 256 in length */
    uint8_t               type;
    uint8_t               length;
    void                 *value; /* pointer to data */
};

#endif

/* Overlay Index Info */
struct overlay_index
{
  struct eth_segment_id eth_s_id;
  union gw_addr gw_ip;
};

/* 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;

  /* Large Communities attribute. */
  struct lcommunity *lcommunity;

  /* 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 */
  route_tag_t tag;

  /* Label index */
  u_int32_t label_index;

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

#if ENABLE_BGP_VNC
  struct bgp_attr_encap_subtlv *vnc_subtlvs;		/* VNC-specific */
#endif
  /* EVPN */
  struct overlay_index evpn_overlay;
};

/* 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_int64_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)
#define BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED (1 << 6)

/* 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)  (1ULL << ((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,
                                     struct attr *);
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, struct attr *);
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_PREFER_GLOBAL_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
684a7227 PG	24	#include "bgp_attr_evpn.h"
684a7227 PG	25
718e3744	26	/* Simple bit mapping. */
	27	#define BITMAP_NBBY 8
	28
	29	#define SET_BITMAP(MAP, NUM) \
	30	SET_FLAG (MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))
	31
	32	#define CHECK_BITMAP(MAP, NUM) \
	33	CHECK_FLAG (MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))
	34
3b424979	35	#define BGP_MED_MAX UINT32_MAX
3b424979	36
03e214c8	37
718e3744	38	/* BGP Attribute type range. */
	39	#define BGP_ATTR_TYPE_RANGE 256
	40	#define BGP_ATTR_BITMAP_SIZE (BGP_ATTR_TYPE_RANGE / BITMAP_NBBY)
	41
	42	/* BGP Attribute flags. */
	43	#define BGP_ATTR_FLAG_OPTIONAL 0x80 /* Attribute is optional. */
	44	#define BGP_ATTR_FLAG_TRANS 0x40 /* Attribute is transitive. */
	45	#define BGP_ATTR_FLAG_PARTIAL 0x20 /* Attribute is partial. */
	46	#define BGP_ATTR_FLAG_EXTLEN 0x10 /* Extended length flag. */
	47
	48	/* BGP attribute header must bigger than 2. */
370b64a2	49	#define BGP_ATTR_MIN_LEN 3 /* Attribute flag, type length. */
03e214c8 PJ	50	#define BGP_ATTR_DEFAULT_WEIGHT 32768
03e214c8 PJ	51
801a9bcc DS	52	/* Valid lengths for mp_nexthop_len */
801a9bcc DS	53	#define BGP_ATTR_NHLEN_IPV4 IPV4_MAX_BYTELEN
945c8fe9	54	#define BGP_ATTR_NHLEN_VPNV4 8+IPV4_MAX_BYTELEN
801a9bcc DS	55	#define BGP_ATTR_NHLEN_IPV6_GLOBAL IPV6_MAX_BYTELEN
801a9bcc DS	56	#define BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL (IPV6_MAX_BYTELEN * 2)
945c8fe9 LB	57	#define BGP_ATTR_NHLEN_VPNV6_GLOBAL 8+IPV6_MAX_BYTELEN
945c8fe9 LB	58	#define BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL ((8+IPV6_MAX_BYTELEN) * 2)
801a9bcc	59
f4c89855 LB	60
	61	struct bgp_attr_encap_subtlv {
	62	struct bgp_attr_encap_subtlv next; / for chaining */
bede7744 LB	63	/* Reference count of this attribute. */
bede7744 LB	64	unsigned long refcnt;
f4c89855 LB	65	uint16_t type;
	66	uint16_t length;
	67	uint8_t value[1]; /* will be extended */
	68	};
	69
65efcfce LB	70	#if ENABLE_BGP_VNC
	71	/*
	72	* old rfp<->rfapi representation
	73	*/
	74	struct bgp_tea_options {
	75	struct bgp_tea_options *next;
	76	uint8_t options_count;
	77	uint16_t options_length; /* each TLV may be 256 in length */
	78	uint8_t type;
	79	uint8_t length;
	80	void value; / pointer to data */
	81	};
	82
	83	#endif
	84
684a7227 PG	85	/* Overlay Index Info */
	86	struct overlay_index
	87	{
	88	struct eth_segment_id eth_s_id;
	89	union gw_addr gw_ip;
	90	};
	91
fb982c25 PJ	92	/* Additional/uncommon BGP attributes.
	93	* lazily allocated as and when a struct attr
	94	* requires it.
	95	*/
	96	struct attr_extra
718e3744	97	{
fb982c25	98	/* Multi-Protocol Nexthop, AFI IPv6 */
718e3744	99	struct in6_addr mp_nexthop_global;
718e3744	100	struct in6_addr mp_nexthop_local;
718e3744	101
718e3744	102	/* Extended Communities attribute. */
718e3744	103	struct ecommunity *ecommunity;
57d187bc JS	104
	105	/* Large Communities attribute. */
	106	struct lcommunity *lcommunity;
2acb4ac2	107
cbdfbaa5 PJ	108	/* Route-Reflector Cluster attribute */
	109	struct cluster_list *cluster;
	110
718e3744	111	/* Unknown transitive attribute. */
718e3744	112	struct transit *transit;
cbdfbaa5	113
fb982c25	114	struct in_addr mp_nexthop_global_in;
fb982c25 PJ	115
	116	/* Aggregator Router ID attribute */
	117	struct in_addr aggregator_addr;
	118
	119	/* Route Reflector Originator attribute */
	120	struct in_addr originator_id;
	121
	122	/* Local weight, not actually an attribute */
	123	u_int32_t weight;
	124
	125	/* Aggregator ASN */
	126	as_t aggregator_as;
	127
	128	/* MP Nexthop length */
	129	u_char mp_nexthop_len;
0d9551dc	130
161995ea DS	131	/* MP Nexthop preference */
	132	u_char mp_nexthop_prefer_global;
	133
0d9551dc	134	/* route tag */
dc9ffce8	135	route_tag_t tag;
f4c89855	136
6cf48acc VV	137	/* Label index */
	138	u_int32_t label_index;
	139
f4c89855 LB	140	uint16_t encap_tunneltype; /* grr */
f4c89855 LB	141	struct bgp_attr_encap_subtlv encap_subtlvs; / rfc5512 */
65efcfce LB	142
	143	#if ENABLE_BGP_VNC
	144	struct bgp_attr_encap_subtlv vnc_subtlvs; / VNC-specific */
	145	#endif
684a7227 PG	146	/* EVPN */
684a7227 PG	147	struct overlay_index evpn_overlay;
fb982c25 PJ	148	};
	149
	150	/* BGP core attribute structure. */
	151	struct attr
	152	{
	153	/* AS Path structure */
	154	struct aspath *aspath;
	155
	156	/* Community structure */
	157	struct community *community;
	158
	159	/* Lazily allocated pointer to extra attributes */
	160	struct attr_extra *extra;
	161
cbdfbaa5 PJ	162	/* Reference count of this attribute. */
	163	unsigned long refcnt;
	164
	165	/* Flag of attribute is set or not. */
02cd9458	166	u_int64_t flag;
cbdfbaa5 PJ	167
	168	/* Apart from in6_addr, the remaining static attributes */
	169	struct in_addr nexthop;
	170	u_int32_t med;
	171	u_int32_t local_pref;
b892f1dd	172	ifindex_t nh_ifindex;
41367172	173
fb982c25	174	/* Path origin attribute */
cbdfbaa5	175	u_char origin;
3f9c7369 DS	176
	177	/* has the route-map changed any attribute?
	178	Used on the peer outbound side. */
	179	u_int32_t rmap_change_flags;
718e3744	180	};
718e3744	181
3f9c7369	182	/* rmap_change_flags definition */
3811f1e2	183	#define BATTR_RMAP_IPV4_NHOP_CHANGED (1 << 0)
3f9c7369 DS	184	#define BATTR_RMAP_NEXTHOP_PEER_ADDRESS (1 << 1)
3f9c7369 DS	185	#define BATTR_REFLECTED (1 << 2)
316e074d	186	#define BATTR_RMAP_NEXTHOP_UNCHANGED (1 << 3)
3811f1e2 DS	187	#define BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED (1 << 4)
3811f1e2 DS	188	#define BATTR_RMAP_IPV6_LL_NHOP_CHANGED (1 << 5)
b2e03f7a	189	#define BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED (1 << 6)
3f9c7369	190
718e3744	191	/* Router Reflector related structure. */
	192	struct cluster_list
	193	{
	194	unsigned long refcnt;
	195	int length;
	196	struct in_addr *list;
	197	};
	198
	199	/* Unknown transit attribute. */
	200	struct transit
	201	{
	202	unsigned long refcnt;
	203	int length;
	204	u_char *val;
	205	};
	206
02cd9458	207	#define ATTR_FLAG_BIT(X) (1ULL << ((X) - 1))
718e3744	208
5e242b0d DS	209	#define BGP_CLUSTER_LIST_LENGTH(attr) \
	210	(((attr)->flag & ATTR_FLAG_BIT(BGP_ATTR_CLUSTER_LIST)) ? \
	211	(attr)->extra->cluster->length : 0)
	212
b881c707 PJ	213	typedef enum {
	214	BGP_ATTR_PARSE_PROCEED = 0,
	215	BGP_ATTR_PARSE_ERROR = -1,
	216	BGP_ATTR_PARSE_WITHDRAW = -2,
f57000c0 DL	217
	218	/* only used internally, send notify + convert to BGP_ATTR_PARSE_ERROR */
	219	BGP_ATTR_PARSE_ERROR_NOTIFYPLS = -3,
b881c707 PJ	220	} bgp_attr_parse_ret_t;
b881c707 PJ	221
3f9c7369 DS	222	struct bpacket_attr_vec_arr;
3f9c7369 DS	223
718e3744	224	/* Prototypes. */
94f2b392	225	extern void bgp_attr_init (void);
228da428	226	extern void bgp_attr_finish (void);
b881c707 PJ	227	extern bgp_attr_parse_ret_t bgp_attr_parse (struct peer , struct attr ,
b881c707 PJ	228	bgp_size_t, struct bgp_nlri *,
52a51fd3	229	struct bgp_nlri *);
fb982c25 PJ	230	extern struct attr_extra bgp_attr_extra_get (struct attr );
	231	extern void bgp_attr_extra_free (struct attr *);
	232	extern void bgp_attr_dup (struct attr , struct attr );
73ac8160 DS	233	extern void bgp_attr_deep_dup (struct attr , struct attr );
73ac8160 DS	234	extern void bgp_attr_deep_free (struct attr *);
94f2b392	235	extern struct attr bgp_attr_intern (struct attr attr);
3f9c7369	236	extern struct attr bgp_attr_refcount (struct attr attr);
b881c707	237	extern void bgp_attr_unintern_sub (struct attr *);
f6f434b2	238	extern void bgp_attr_unintern (struct attr **);
94f2b392	239	extern void bgp_attr_flush (struct attr *);
	240	extern struct attr bgp_attr_default_set (struct attr attr, u_char);
	241	extern struct attr *bgp_attr_default_intern (u_char);
	242	extern struct attr bgp_attr_aggregate_intern (struct bgp , u_char,
5228ad27	243	struct aspath *,
42f7e184	244	struct community *, int as_set, u_char);
8c71e481 PM	245	extern bgp_size_t bgp_packet_attribute (struct bgp bgp, struct peer ,
8c71e481 PM	246	struct stream , struct attr ,
3f9c7369	247	struct bpacket_attr_vec_arr *vecarr,
8c71e481 PM	248	struct prefix *, afi_t, safi_t,
8c71e481 PM	249	struct peer , struct prefix_rd ,
adbac85e	250	u_char *, int, u_int32_t);
94f2b392	251	extern void bgp_dump_routes_attr (struct stream , struct attr ,
adbac85e	252	struct prefix *);
ffe11cfb	253	extern int attrhash_cmp (const void , const void );
923de654	254	extern unsigned int attrhash_key_make (void *);
94f2b392	255	extern void attr_show_all (struct vty *);
cbdfbaa5 PJ	256	extern unsigned long int attr_count (void);
cbdfbaa5 PJ	257	extern unsigned long int attr_unknown_count (void);
718e3744	258
718e3744	259	/* Cluster list prototypes. */
94f2b392	260	extern int cluster_loop_check (struct cluster_list *, struct in_addr);
94f2b392	261	extern void cluster_unintern (struct cluster_list *);
718e3744	262
	263	/* Transit attribute prototypes. */
	264	void transit_unintern (struct transit *);
00d252cb	265
835315bf PJ	266	/* Below exported for unit-test purposes only */
	267	struct bgp_attr_parser_args {
	268	struct peer *peer;
	269	bgp_size_t length; /* attribute data length; */
	270	bgp_size_t total; /* total length, inc header */
	271	struct attr *attr;
	272	u_int8_t type;
	273	u_int8_t flags;
	274	u_char *startp;
	275	};
	276	extern int bgp_mp_reach_parse (struct bgp_attr_parser_args *args,
	277	struct bgp_nlri *);
	278	extern int bgp_mp_unreach_parse (struct bgp_attr_parser_args *args,
	279	struct bgp_nlri *);
03292809	280
f4c89855 LB	281	extern struct bgp_attr_encap_subtlv *
	282	encap_tlv_dup(struct bgp_attr_encap_subtlv *orig);
	283
	284	extern void
	285	bgp_attr_flush_encap(struct attr *attr);
	286
8c71e481 PM	287	/**
	288	* Set of functions to encode MP_REACH_NLRI and MP_UNREACH_NLRI attributes.
	289	* Typical call sequence is to call _start(), followed by multiple _prefix(),
	290	* one for each NLRI that needs to be encoded into the UPDATE message, and
	291	* finally the _end() function.
	292	*/
	293	extern size_t bgp_packet_mpattr_start(struct stream *s, afi_t afi, safi_t safi,
8a92a8a0 DS	294	afi_t nh_afi,
8a92a8a0 DS	295	struct bpacket_attr_vec_arr *vecarr,
8c71e481 PM	296	struct attr *attr);
	297	extern void bgp_packet_mpattr_prefix(struct stream *s, afi_t afi, safi_t safi,
	298	struct prefix p, struct prefix_rd prd,
adbac85e	299	u_char *tag, int addpath_encode,
b18825eb PG	300	u_int32_t addpath_tx_id,
b18825eb PG	301	struct attr *);
93b73dfa LB	302	extern size_t bgp_packet_mpattr_prefix_size(afi_t afi, safi_t safi,
93b73dfa LB	303	struct prefix *p);
8c71e481 PM	304	extern void bgp_packet_mpattr_end(struct stream *s, size_t sizep);
	305
	306	extern size_t bgp_packet_mpunreach_start (struct stream *s, afi_t afi,
	307	safi_t safi);
	308	extern void bgp_packet_mpunreach_prefix (struct stream s, struct prefix p,
	309	afi_t afi, safi_t safi, struct prefix_rd *prd,
6e6fd6d1	310	u_char tag, int, u_int32_t, struct attr );
8c71e481 PM	311	extern void bgp_packet_mpunreach_end (struct stream *s, size_t attrlen_pnt);
8c71e481 PM	312
3811f1e2 DS	313	static inline int
	314	bgp_rmap_nhop_changed(u_int32_t out_rmap_flags, u_int32_t in_rmap_flags)
	315	{
	316	return ((CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_PEER_ADDRESS) \|\|
	317	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED) \|\|
	318	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV4_NHOP_CHANGED) \|\|
	319	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED) \|\|
b2e03f7a	320	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED) \|\|
3811f1e2 DS	321	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_LL_NHOP_CHANGED) \|\|
	322	CHECK_FLAG(in_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED)) ? 1 : 0);
	323	}
	324
00d252cb	325	#endif /* _QUAGGA_BGP_ATTR_H */