[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 this program; see the file COPYING; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef _QUAGGA_BGP_ATTR_H
#define _QUAGGA_BGP_ATTR_H

#include "mpls.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;

  /* Static MAC for EVPN */
  u_char sticky;

  /* route tag */
  route_tag_t tag;

  /* Label index */
  u_int32_t label_index;

  /* MPLS label */
  mpls_label_t label;

  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;

  /* EVPN MAC Mobility sequence number, if any. */
  u_int32_t mm_seqnum;
};

/* 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 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 *,
					mpls_label_t *, 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, struct peer *peer,
                                      afi_t afi, safi_t safi,
                                      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,
				     mpls_label_t *label, 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,
			     mpls_label_t *, 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);
}

static inline u_int32_t
mac_mobility_seqnum (struct attr *attr)
{
  return (attr && attr->extra) ? attr->extra->mm_seqnum : 0;
}

#endif /* _QUAGGA_BGP_ATTR_H */
Commit	Line	Data
718e3744	1	/* BGP attributes.
896014f4 DL	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 along
	17	* with this program; see the file COPYING; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
718e3744	20
00d252cb	21	#ifndef _QUAGGA_BGP_ATTR_H
	22	#define _QUAGGA_BGP_ATTR_H
	23
9bedbb1e	24	#include "mpls.h"
684a7227 PG	25	#include "bgp_attr_evpn.h"
684a7227 PG	26
718e3744	27	/* Simple bit mapping. */
	28	#define BITMAP_NBBY 8
	29
	30	#define SET_BITMAP(MAP, NUM) \
	31	SET_FLAG (MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))
	32
	33	#define CHECK_BITMAP(MAP, NUM) \
	34	CHECK_FLAG (MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))
	35
3b424979	36	#define BGP_MED_MAX UINT32_MAX
3b424979	37
03e214c8	38
718e3744	39	/* BGP Attribute type range. */
	40	#define BGP_ATTR_TYPE_RANGE 256
	41	#define BGP_ATTR_BITMAP_SIZE (BGP_ATTR_TYPE_RANGE / BITMAP_NBBY)
	42
	43	/* BGP Attribute flags. */
	44	#define BGP_ATTR_FLAG_OPTIONAL 0x80 /* Attribute is optional. */
	45	#define BGP_ATTR_FLAG_TRANS 0x40 /* Attribute is transitive. */
	46	#define BGP_ATTR_FLAG_PARTIAL 0x20 /* Attribute is partial. */
	47	#define BGP_ATTR_FLAG_EXTLEN 0x10 /* Extended length flag. */
	48
	49	/* BGP attribute header must bigger than 2. */
370b64a2	50	#define BGP_ATTR_MIN_LEN 3 /* Attribute flag, type length. */
03e214c8 PJ	51	#define BGP_ATTR_DEFAULT_WEIGHT 32768
03e214c8 PJ	52
801a9bcc DS	53	/* Valid lengths for mp_nexthop_len */
801a9bcc DS	54	#define BGP_ATTR_NHLEN_IPV4 IPV4_MAX_BYTELEN
945c8fe9	55	#define BGP_ATTR_NHLEN_VPNV4 8+IPV4_MAX_BYTELEN
801a9bcc DS	56	#define BGP_ATTR_NHLEN_IPV6_GLOBAL IPV6_MAX_BYTELEN
801a9bcc DS	57	#define BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL (IPV6_MAX_BYTELEN * 2)
945c8fe9 LB	58	#define BGP_ATTR_NHLEN_VPNV6_GLOBAL 8+IPV6_MAX_BYTELEN
945c8fe9 LB	59	#define BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL ((8+IPV6_MAX_BYTELEN) * 2)
801a9bcc	60
c5a543b4 DW	61	/* Prefix SID types */
	62	#define BGP_PREFIX_SID_LABEL_INDEX 1
	63	#define BGP_PREFIX_SID_IPV6 2
	64	#define BGP_PREFIX_SID_ORIGINATOR_SRGB 3
	65
	66	#define BGP_PREFIX_SID_LABEL_INDEX_LENGTH 7
	67	#define BGP_PREFIX_SID_IPV6_LENGTH 19
	68	#define BGP_PREFIX_SID_ORIGINATOR_SRGB_LENGTH 6
f4c89855 LB	69
	70	struct bgp_attr_encap_subtlv {
	71	struct bgp_attr_encap_subtlv next; / for chaining */
bede7744 LB	72	/* Reference count of this attribute. */
bede7744 LB	73	unsigned long refcnt;
f4c89855 LB	74	uint16_t type;
	75	uint16_t length;
	76	uint8_t value[1]; /* will be extended */
	77	};
	78
65efcfce LB	79	#if ENABLE_BGP_VNC
	80	/*
	81	* old rfp<->rfapi representation
	82	*/
	83	struct bgp_tea_options {
	84	struct bgp_tea_options *next;
	85	uint8_t options_count;
	86	uint16_t options_length; /* each TLV may be 256 in length */
	87	uint8_t type;
	88	uint8_t length;
	89	void value; / pointer to data */
	90	};
	91
	92	#endif
	93
684a7227 PG	94	/* Overlay Index Info */
	95	struct overlay_index
	96	{
	97	struct eth_segment_id eth_s_id;
	98	union gw_addr gw_ip;
	99	};
	100
fb982c25 PJ	101	/* Additional/uncommon BGP attributes.
	102	* lazily allocated as and when a struct attr
	103	* requires it.
	104	*/
	105	struct attr_extra
718e3744	106	{
fb982c25	107	/* Multi-Protocol Nexthop, AFI IPv6 */
718e3744	108	struct in6_addr mp_nexthop_global;
718e3744	109	struct in6_addr mp_nexthop_local;
718e3744	110
718e3744	111	/* Extended Communities attribute. */
718e3744	112	struct ecommunity *ecommunity;
57d187bc JS	113
	114	/* Large Communities attribute. */
	115	struct lcommunity *lcommunity;
2acb4ac2	116
cbdfbaa5 PJ	117	/* Route-Reflector Cluster attribute */
	118	struct cluster_list *cluster;
	119
718e3744	120	/* Unknown transitive attribute. */
718e3744	121	struct transit *transit;
cbdfbaa5	122
fb982c25	123	struct in_addr mp_nexthop_global_in;
fb982c25 PJ	124
	125	/* Aggregator Router ID attribute */
	126	struct in_addr aggregator_addr;
	127
	128	/* Route Reflector Originator attribute */
	129	struct in_addr originator_id;
	130
	131	/* Local weight, not actually an attribute */
	132	u_int32_t weight;
	133
	134	/* Aggregator ASN */
	135	as_t aggregator_as;
	136
	137	/* MP Nexthop length */
	138	u_char mp_nexthop_len;
0d9551dc	139
161995ea DS	140	/* MP Nexthop preference */
	141	u_char mp_nexthop_prefer_global;
	142
128ea8ab	143	/* Static MAC for EVPN */
	144	u_char sticky;
	145
0d9551dc	146	/* route tag */
dc9ffce8	147	route_tag_t tag;
f4c89855	148
6cf48acc VV	149	/* Label index */
	150	u_int32_t label_index;
	151
9bedbb1e DW	152	/* MPLS label */
	153	mpls_label_t label;
	154
f4c89855 LB	155	uint16_t encap_tunneltype; /* grr */
f4c89855 LB	156	struct bgp_attr_encap_subtlv encap_subtlvs; / rfc5512 */
65efcfce LB	157
	158	#if ENABLE_BGP_VNC
	159	struct bgp_attr_encap_subtlv vnc_subtlvs; / VNC-specific */
	160	#endif
684a7227 PG	161	/* EVPN */
684a7227 PG	162	struct overlay_index evpn_overlay;
128ea8ab	163
	164	/* EVPN MAC Mobility sequence number, if any. */
	165	u_int32_t mm_seqnum;
fb982c25 PJ	166	};
	167
	168	/* BGP core attribute structure. */
	169	struct attr
	170	{
	171	/* AS Path structure */
	172	struct aspath *aspath;
	173
	174	/* Community structure */
	175	struct community *community;
	176
	177	/* Lazily allocated pointer to extra attributes */
	178	struct attr_extra *extra;
	179
cbdfbaa5 PJ	180	/* Reference count of this attribute. */
	181	unsigned long refcnt;
	182
	183	/* Flag of attribute is set or not. */
ccddeb99	184	uint64_t flag;
cbdfbaa5 PJ	185
	186	/* Apart from in6_addr, the remaining static attributes */
	187	struct in_addr nexthop;
	188	u_int32_t med;
	189	u_int32_t local_pref;
b892f1dd	190	ifindex_t nh_ifindex;
41367172	191
fb982c25	192	/* Path origin attribute */
cbdfbaa5	193	u_char origin;
3f9c7369 DS	194
	195	/* has the route-map changed any attribute?
	196	Used on the peer outbound side. */
	197	u_int32_t rmap_change_flags;
718e3744	198	};
718e3744	199
3f9c7369	200	/* rmap_change_flags definition */
3811f1e2	201	#define BATTR_RMAP_IPV4_NHOP_CHANGED (1 << 0)
3f9c7369 DS	202	#define BATTR_RMAP_NEXTHOP_PEER_ADDRESS (1 << 1)
3f9c7369 DS	203	#define BATTR_REFLECTED (1 << 2)
316e074d	204	#define BATTR_RMAP_NEXTHOP_UNCHANGED (1 << 3)
3811f1e2 DS	205	#define BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED (1 << 4)
3811f1e2 DS	206	#define BATTR_RMAP_IPV6_LL_NHOP_CHANGED (1 << 5)
b2e03f7a	207	#define BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED (1 << 6)
3f9c7369	208
718e3744	209	/* Router Reflector related structure. */
	210	struct cluster_list
	211	{
	212	unsigned long refcnt;
	213	int length;
	214	struct in_addr *list;
	215	};
	216
	217	/* Unknown transit attribute. */
	218	struct transit
	219	{
	220	unsigned long refcnt;
	221	int length;
	222	u_char *val;
	223	};
	224
02cd9458	225	#define ATTR_FLAG_BIT(X) (1ULL << ((X) - 1))
718e3744	226
5e242b0d DS	227	#define BGP_CLUSTER_LIST_LENGTH(attr) \
	228	(((attr)->flag & ATTR_FLAG_BIT(BGP_ATTR_CLUSTER_LIST)) ? \
	229	(attr)->extra->cluster->length : 0)
	230
b881c707 PJ	231	typedef enum {
	232	BGP_ATTR_PARSE_PROCEED = 0,
	233	BGP_ATTR_PARSE_ERROR = -1,
	234	BGP_ATTR_PARSE_WITHDRAW = -2,
f57000c0 DL	235
	236	/* only used internally, send notify + convert to BGP_ATTR_PARSE_ERROR */
	237	BGP_ATTR_PARSE_ERROR_NOTIFYPLS = -3,
b881c707 PJ	238	} bgp_attr_parse_ret_t;
b881c707 PJ	239
3f9c7369 DS	240	struct bpacket_attr_vec_arr;
3f9c7369 DS	241
718e3744	242	/* Prototypes. */
94f2b392	243	extern void bgp_attr_init (void);
228da428	244	extern void bgp_attr_finish (void);
b881c707 PJ	245	extern bgp_attr_parse_ret_t bgp_attr_parse (struct peer , struct attr ,
b881c707 PJ	246	bgp_size_t, struct bgp_nlri *,
52a51fd3	247	struct bgp_nlri *);
fb982c25 PJ	248	extern struct attr_extra bgp_attr_extra_get (struct attr );
	249	extern void bgp_attr_extra_free (struct attr *);
	250	extern void bgp_attr_dup (struct attr , struct attr );
73ac8160 DS	251	extern void bgp_attr_deep_dup (struct attr , struct attr );
73ac8160 DS	252	extern void bgp_attr_deep_free (struct attr *);
94f2b392	253	extern struct attr bgp_attr_intern (struct attr attr);
3f9c7369	254	extern struct attr bgp_attr_refcount (struct attr attr);
b881c707	255	extern void bgp_attr_unintern_sub (struct attr *);
f6f434b2	256	extern void bgp_attr_unintern (struct attr **);
94f2b392	257	extern void bgp_attr_flush (struct attr *);
94f2b392	258	extern struct attr bgp_attr_default_set (struct attr attr, u_char);
94f2b392	259	extern struct attr bgp_attr_aggregate_intern (struct bgp , u_char,
5228ad27	260	struct aspath *,
42f7e184	261	struct community *, int as_set, u_char);
8c71e481 PM	262	extern bgp_size_t bgp_packet_attribute (struct bgp bgp, struct peer ,
8c71e481 PM	263	struct stream , struct attr ,
3f9c7369	264	struct bpacket_attr_vec_arr *vecarr,
8c71e481 PM	265	struct prefix *, afi_t, safi_t,
8c71e481 PM	266	struct peer , struct prefix_rd ,
9bedbb1e	267	mpls_label_t *, int, u_int32_t);
94f2b392	268	extern void bgp_dump_routes_attr (struct stream , struct attr ,
adbac85e	269	struct prefix *);
ffe11cfb	270	extern int attrhash_cmp (const void , const void );
923de654	271	extern unsigned int attrhash_key_make (void *);
94f2b392	272	extern void attr_show_all (struct vty *);
cbdfbaa5 PJ	273	extern unsigned long int attr_count (void);
cbdfbaa5 PJ	274	extern unsigned long int attr_unknown_count (void);
718e3744	275
718e3744	276	/* Cluster list prototypes. */
94f2b392	277	extern int cluster_loop_check (struct cluster_list *, struct in_addr);
94f2b392	278	extern void cluster_unintern (struct cluster_list *);
718e3744	279
	280	/* Transit attribute prototypes. */
	281	void transit_unintern (struct transit *);
00d252cb	282
835315bf PJ	283	/* Below exported for unit-test purposes only */
	284	struct bgp_attr_parser_args {
	285	struct peer *peer;
	286	bgp_size_t length; /* attribute data length; */
	287	bgp_size_t total; /* total length, inc header */
	288	struct attr *attr;
	289	u_int8_t type;
	290	u_int8_t flags;
	291	u_char *startp;
	292	};
	293	extern int bgp_mp_reach_parse (struct bgp_attr_parser_args *args,
	294	struct bgp_nlri *);
	295	extern int bgp_mp_unreach_parse (struct bgp_attr_parser_args *args,
	296	struct bgp_nlri *);
03292809	297
f4c89855 LB	298	extern struct bgp_attr_encap_subtlv *
	299	encap_tlv_dup(struct bgp_attr_encap_subtlv *orig);
	300
	301	extern void
	302	bgp_attr_flush_encap(struct attr *attr);
	303
8c71e481 PM	304	/**
	305	* Set of functions to encode MP_REACH_NLRI and MP_UNREACH_NLRI attributes.
	306	* Typical call sequence is to call _start(), followed by multiple _prefix(),
	307	* one for each NLRI that needs to be encoded into the UPDATE message, and
	308	* finally the _end() function.
	309	*/
2b26882d DW	310	extern size_t bgp_packet_mpattr_start(struct stream s, struct peer peer,
2b26882d DW	311	afi_t afi, safi_t safi,
8a92a8a0	312	struct bpacket_attr_vec_arr *vecarr,
8c71e481 PM	313	struct attr *attr);
	314	extern void bgp_packet_mpattr_prefix(struct stream *s, afi_t afi, safi_t safi,
	315	struct prefix p, struct prefix_rd prd,
9bedbb1e	316	mpls_label_t *label, int addpath_encode,
b18825eb PG	317	u_int32_t addpath_tx_id,
b18825eb PG	318	struct attr *);
93b73dfa LB	319	extern size_t bgp_packet_mpattr_prefix_size(afi_t afi, safi_t safi,
93b73dfa LB	320	struct prefix *p);
8c71e481 PM	321	extern void bgp_packet_mpattr_end(struct stream *s, size_t sizep);
	322
	323	extern size_t bgp_packet_mpunreach_start (struct stream *s, afi_t afi,
	324	safi_t safi);
	325	extern void bgp_packet_mpunreach_prefix (struct stream s, struct prefix p,
	326	afi_t afi, safi_t safi, struct prefix_rd *prd,
9bedbb1e	327	mpls_label_t , int, u_int32_t, struct attr );
8c71e481 PM	328	extern void bgp_packet_mpunreach_end (struct stream *s, size_t attrlen_pnt);
8c71e481 PM	329
3811f1e2 DS	330	static inline int
	331	bgp_rmap_nhop_changed(u_int32_t out_rmap_flags, u_int32_t in_rmap_flags)
	332	{
	333	return ((CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_PEER_ADDRESS) \|\|
	334	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED) \|\|
	335	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV4_NHOP_CHANGED) \|\|
	336	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED) \|\|
b2e03f7a	337	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED) \|\|
3811f1e2 DS	338	CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_LL_NHOP_CHANGED) \|\|
	339	CHECK_FLAG(in_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED)) ? 1 : 0);
	340	}
	341
128ea8ab	342	static inline u_int32_t
	343	mac_mobility_seqnum (struct attr *attr)
	344	{
	345	return (attr && attr->extra) ? attr->extra->mm_seqnum : 0;
	346	}
	347
00d252cb	348	#endif /* _QUAGGA_BGP_ATTR_H */