[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)

/* Prefix SID types */
#define BGP_PREFIX_SID_LABEL_INDEX     1
#define BGP_PREFIX_SID_IPV6            2
#define BGP_PREFIX_SID_ORIGINATOR_SRGB 3

#define BGP_PREFIX_SID_LABEL_INDEX_LENGTH      7
#define BGP_PREFIX_SID_IPV6_LENGTH            19
#define BGP_PREFIX_SID_ORIGINATOR_SRGB_LENGTH  6

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. */
  uint64_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_aggregate_intern (struct bgp *, u_char,
                                        struct aspath *, 
                                        struct community *, int as_set, u_char);
extern afi_t bgp_nexthop_afi (struct peer *peer, afi_t afi, safi_t safi,
                              struct attr *attr);
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
c5a543b4 DW	60	/* Prefix SID types */
	61	#define BGP_PREFIX_SID_LABEL_INDEX 1
	62	#define BGP_PREFIX_SID_IPV6 2
	63	#define BGP_PREFIX_SID_ORIGINATOR_SRGB 3
	64
	65	#define BGP_PREFIX_SID_LABEL_INDEX_LENGTH 7
	66	#define BGP_PREFIX_SID_IPV6_LENGTH 19
	67	#define BGP_PREFIX_SID_ORIGINATOR_SRGB_LENGTH 6
f4c89855 LB	68
	69	struct bgp_attr_encap_subtlv {
	70	struct bgp_attr_encap_subtlv next; / for chaining */
bede7744 LB	71	/* Reference count of this attribute. */
bede7744 LB	72	unsigned long refcnt;
f4c89855 LB	73	uint16_t type;
	74	uint16_t length;
	75	uint8_t value[1]; /* will be extended */
	76	};
	77
65efcfce LB	78	#if ENABLE_BGP_VNC
	79	/*
	80	* old rfp<->rfapi representation
	81	*/
	82	struct bgp_tea_options {
	83	struct bgp_tea_options *next;
	84	uint8_t options_count;
	85	uint16_t options_length; /* each TLV may be 256 in length */
	86	uint8_t type;
	87	uint8_t length;
	88	void value; / pointer to data */
	89	};
	90
	91	#endif
	92
684a7227 PG	93	/* Overlay Index Info */
	94	struct overlay_index
	95	{
	96	struct eth_segment_id eth_s_id;
	97	union gw_addr gw_ip;
	98	};
	99
fb982c25 PJ	100	/* Additional/uncommon BGP attributes.
	101	* lazily allocated as and when a struct attr
	102	* requires it.
	103	*/
	104	struct attr_extra
718e3744	105	{
fb982c25	106	/* Multi-Protocol Nexthop, AFI IPv6 */
718e3744	107	struct in6_addr mp_nexthop_global;
718e3744	108	struct in6_addr mp_nexthop_local;
718e3744	109
718e3744	110	/* Extended Communities attribute. */
718e3744	111	struct ecommunity *ecommunity;
57d187bc JS	112
	113	/* Large Communities attribute. */
	114	struct lcommunity *lcommunity;
2acb4ac2	115
cbdfbaa5 PJ	116	/* Route-Reflector Cluster attribute */
	117	struct cluster_list *cluster;
	118
718e3744	119	/* Unknown transitive attribute. */
718e3744	120	struct transit *transit;
cbdfbaa5	121
fb982c25	122	struct in_addr mp_nexthop_global_in;
fb982c25 PJ	123
	124	/* Aggregator Router ID attribute */
	125	struct in_addr aggregator_addr;
	126
	127	/* Route Reflector Originator attribute */
	128	struct in_addr originator_id;
	129
	130	/* Local weight, not actually an attribute */
	131	u_int32_t weight;
	132
	133	/* Aggregator ASN */
	134	as_t aggregator_as;
	135
	136	/* MP Nexthop length */
	137	u_char mp_nexthop_len;
0d9551dc	138
161995ea DS	139	/* MP Nexthop preference */
	140	u_char mp_nexthop_prefer_global;
	141
0d9551dc	142	/* route tag */
dc9ffce8	143	route_tag_t tag;
f4c89855	144
6cf48acc VV	145	/* Label index */
	146	u_int32_t label_index;
	147
f4c89855 LB	148	uint16_t encap_tunneltype; /* grr */
f4c89855 LB	149	struct bgp_attr_encap_subtlv encap_subtlvs; / rfc5512 */
65efcfce LB	150
	151	#if ENABLE_BGP_VNC
	152	struct bgp_attr_encap_subtlv vnc_subtlvs; / VNC-specific */
	153	#endif
684a7227 PG	154	/* EVPN */
684a7227 PG	155	struct overlay_index evpn_overlay;
fb982c25 PJ	156	};
	157
	158	/* BGP core attribute structure. */
	159	struct attr
	160	{
	161	/* AS Path structure */
	162	struct aspath *aspath;
	163
	164	/* Community structure */
	165	struct community *community;
	166
	167	/* Lazily allocated pointer to extra attributes */
	168	struct attr_extra *extra;
	169
cbdfbaa5 PJ	170	/* Reference count of this attribute. */
	171	unsigned long refcnt;
	172
	173	/* Flag of attribute is set or not. */
ccddeb99	174	uint64_t flag;
cbdfbaa5 PJ	175
	176	/* Apart from in6_addr, the remaining static attributes */
	177	struct in_addr nexthop;
	178	u_int32_t med;
	179	u_int32_t local_pref;
b892f1dd	180	ifindex_t nh_ifindex;
41367172	181
fb982c25	182	/* Path origin attribute */
cbdfbaa5	183	u_char origin;
3f9c7369 DS	184
	185	/* has the route-map changed any attribute?
	186	Used on the peer outbound side. */
	187	u_int32_t rmap_change_flags;
718e3744	188	};
718e3744	189
3f9c7369	190	/* rmap_change_flags definition */
3811f1e2	191	#define BATTR_RMAP_IPV4_NHOP_CHANGED (1 << 0)
3f9c7369 DS	192	#define BATTR_RMAP_NEXTHOP_PEER_ADDRESS (1 << 1)
3f9c7369 DS	193	#define BATTR_REFLECTED (1 << 2)
316e074d	194	#define BATTR_RMAP_NEXTHOP_UNCHANGED (1 << 3)
3811f1e2 DS	195	#define BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED (1 << 4)
3811f1e2 DS	196	#define BATTR_RMAP_IPV6_LL_NHOP_CHANGED (1 << 5)
b2e03f7a	197	#define BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED (1 << 6)
3f9c7369	198
718e3744	199	/* Router Reflector related structure. */
	200	struct cluster_list
	201	{
	202	unsigned long refcnt;
	203	int length;
	204	struct in_addr *list;
	205	};
	206
	207	/* Unknown transit attribute. */
	208	struct transit
	209	{
	210	unsigned long refcnt;
	211	int length;
	212	u_char *val;
	213	};
	214
02cd9458	215	#define ATTR_FLAG_BIT(X) (1ULL << ((X) - 1))
718e3744	216
5e242b0d DS	217	#define BGP_CLUSTER_LIST_LENGTH(attr) \
	218	(((attr)->flag & ATTR_FLAG_BIT(BGP_ATTR_CLUSTER_LIST)) ? \
	219	(attr)->extra->cluster->length : 0)
	220
b881c707 PJ	221	typedef enum {
	222	BGP_ATTR_PARSE_PROCEED = 0,
	223	BGP_ATTR_PARSE_ERROR = -1,
	224	BGP_ATTR_PARSE_WITHDRAW = -2,
f57000c0 DL	225
	226	/* only used internally, send notify + convert to BGP_ATTR_PARSE_ERROR */
	227	BGP_ATTR_PARSE_ERROR_NOTIFYPLS = -3,
b881c707 PJ	228	} bgp_attr_parse_ret_t;
b881c707 PJ	229
3f9c7369 DS	230	struct bpacket_attr_vec_arr;
3f9c7369 DS	231
718e3744	232	/* Prototypes. */
94f2b392	233	extern void bgp_attr_init (void);
228da428	234	extern void bgp_attr_finish (void);
b881c707 PJ	235	extern bgp_attr_parse_ret_t bgp_attr_parse (struct peer , struct attr ,
b881c707 PJ	236	bgp_size_t, struct bgp_nlri *,
52a51fd3	237	struct bgp_nlri *);
fb982c25 PJ	238	extern struct attr_extra bgp_attr_extra_get (struct attr );
	239	extern void bgp_attr_extra_free (struct attr *);
	240	extern void bgp_attr_dup (struct attr , struct attr );
73ac8160 DS	241	extern void bgp_attr_deep_dup (struct attr , struct attr );
73ac8160 DS	242	extern void bgp_attr_deep_free (struct attr *);
94f2b392	243	extern struct attr bgp_attr_intern (struct attr attr);
3f9c7369	244	extern struct attr bgp_attr_refcount (struct attr attr);
b881c707	245	extern void bgp_attr_unintern_sub (struct attr *);
f6f434b2	246	extern void bgp_attr_unintern (struct attr **);
94f2b392	247	extern void bgp_attr_flush (struct attr *);
94f2b392	248	extern struct attr bgp_attr_default_set (struct attr attr, u_char);
94f2b392	249	extern struct attr bgp_attr_aggregate_intern (struct bgp , u_char,
5228ad27	250	struct aspath *,
42f7e184	251	struct community *, int as_set, u_char);
eb15f477 DW	252	extern afi_t bgp_nexthop_afi (struct peer *peer, afi_t afi, safi_t safi,
eb15f477 DW	253	struct attr *attr);
8c71e481 PM	254	extern bgp_size_t bgp_packet_attribute (struct bgp bgp, struct peer ,
8c71e481 PM	255	struct stream , struct attr ,
3f9c7369	256	struct bpacket_attr_vec_arr *vecarr,
8c71e481 PM	257	struct prefix *, afi_t, safi_t,
8c71e481 PM	258	struct peer , struct prefix_rd ,
adbac85e	259	u_char *, int, u_int32_t);
94f2b392	260	extern void bgp_dump_routes_attr (struct stream , struct attr ,
adbac85e	261	struct prefix *);
ffe11cfb	262	extern int attrhash_cmp (const void , const void );
923de654	263	extern unsigned int attrhash_key_make (void *);
94f2b392	264	extern void attr_show_all (struct vty *);
cbdfbaa5 PJ	265	extern unsigned long int attr_count (void);
cbdfbaa5 PJ	266	extern unsigned long int attr_unknown_count (void);
718e3744	267
718e3744	268	/* Cluster list prototypes. */
94f2b392	269	extern int cluster_loop_check (struct cluster_list *, struct in_addr);
94f2b392	270	extern void cluster_unintern (struct cluster_list *);
718e3744	271
	272	/* Transit attribute prototypes. */
	273	void transit_unintern (struct transit *);
00d252cb	274
835315bf PJ	275	/* Below exported for unit-test purposes only */
	276	struct bgp_attr_parser_args {
	277	struct peer *peer;
	278	bgp_size_t length; /* attribute data length; */
	279	bgp_size_t total; /* total length, inc header */
	280	struct attr *attr;
	281	u_int8_t type;
	282	u_int8_t flags;
	283	u_char *startp;
	284	};
	285	extern int bgp_mp_reach_parse (struct bgp_attr_parser_args *args,
	286	struct bgp_nlri *);
	287	extern int bgp_mp_unreach_parse (struct bgp_attr_parser_args *args,
	288	struct bgp_nlri *);
03292809	289
f4c89855 LB	290	extern struct bgp_attr_encap_subtlv *
	291	encap_tlv_dup(struct bgp_attr_encap_subtlv *orig);
	292
	293	extern void
	294	bgp_attr_flush_encap(struct attr *attr);
	295
8c71e481 PM	296	/**
	297	* Set of functions to encode MP_REACH_NLRI and MP_UNREACH_NLRI attributes.
	298	* Typical call sequence is to call _start(), followed by multiple _prefix(),
	299	* one for each NLRI that needs to be encoded into the UPDATE message, and
	300	* finally the _end() function.
	301	*/
	302	extern size_t bgp_packet_mpattr_start(struct stream *s, afi_t afi, safi_t safi,
8a92a8a0 DS	303	afi_t nh_afi,
8a92a8a0 DS	304	struct bpacket_attr_vec_arr *vecarr,
8c71e481 PM	305	struct attr *attr);
	306	extern void bgp_packet_mpattr_prefix(struct stream *s, afi_t afi, safi_t safi,
	307	struct prefix p, struct prefix_rd prd,
adbac85e	308	u_char *tag, int addpath_encode,
b18825eb PG	309	u_int32_t addpath_tx_id,
b18825eb PG	310	struct attr *);
93b73dfa LB	311	extern size_t bgp_packet_mpattr_prefix_size(afi_t afi, safi_t safi,
93b73dfa LB	312	struct prefix *p);
8c71e481 PM	313	extern void bgp_packet_mpattr_end(struct stream *s, size_t sizep);
	314
	315	extern size_t bgp_packet_mpunreach_start (struct stream *s, afi_t afi,
	316	safi_t safi);
	317	extern void bgp_packet_mpunreach_prefix (struct stream s, struct prefix p,
	318	afi_t afi, safi_t safi, struct prefix_rd *prd,
6e6fd6d1	319	u_char tag, int, u_int32_t, struct attr );
8c71e481 PM	320	extern void bgp_packet_mpunreach_end (struct stream *s, size_t attrlen_pnt);
8c71e481 PM	321
3811f1e2 DS	322	static inline int
	323	bgp_rmap_nhop_changed(u_int32_t out_rmap_flags, u_int32_t in_rmap_flags)
	324	{
	325	return ((CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_PEER_ADDRESS) \|\|
	326	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED) \|\|
	327	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV4_NHOP_CHANGED) \|\|
	328	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED) \|\|
b2e03f7a	329	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED) \|\|
3811f1e2 DS	330	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_LL_NHOP_CHANGED) \|\|
	331	CHECK_FLAG(in_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED)) ? 1 : 0);
	332	}
	333
00d252cb	334	#endif /* _QUAGGA_BGP_ATTR_H */