[mirror_frr.git] / bgpd / bgp_ecommunity.h

// SPDX-License-Identifier: GPL-2.0-or-later
/* BGP Extended Communities Attribute.
 * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
 */

#ifndef _QUAGGA_BGP_ECOMMUNITY_H
#define _QUAGGA_BGP_ECOMMUNITY_H

#include "bgpd/bgp_route.h"
#include "bgpd/bgp_rpki.h"
#include "bgpd/bgpd.h"

/* Refer to rfc7153 for the IANA registry definitions. These are
 * updated by other standards like rfc7674.
 */
/* High-order octet of the Extended Communities type field.  */
#define ECOMMUNITY_ENCODE_AS                0x00
#define ECOMMUNITY_ENCODE_IP                0x01
#define ECOMMUNITY_ENCODE_AS4               0x02
#define ECOMMUNITY_ENCODE_OPAQUE            0x03
#define ECOMMUNITY_ENCODE_EVPN              0x06
#define ECOMMUNITY_ENCODE_REDIRECT_IP_NH    0x08 /* Flow Spec */
/* Generic Transitive Experimental */
#define ECOMMUNITY_ENCODE_TRANS_EXP         0x80

/* RFC7674 */
#define ECOMMUNITY_EXTENDED_COMMUNITY_PART_2 0x81
#define ECOMMUNITY_EXTENDED_COMMUNITY_PART_3 0x82

/* Non-transitive extended community types. */
#define ECOMMUNITY_ENCODE_AS_NON_TRANS      0x40
#define ECOMMUNITY_ENCODE_IP_NON_TRANS      0x41
#define ECOMMUNITY_ENCODE_AS4_NON_TRANS     0x42
#define ECOMMUNITY_ENCODE_OPAQUE_NON_TRANS  0x43

/* Low-order octet of the Extended Communities type field.  */
/* Note: This really depends on the high-order octet. This means that
 * multiple definitions for the same value are possible.
 */
#define ECOMMUNITY_ORIGIN_VALIDATION_STATE  0x00
#define ECOMMUNITY_ROUTE_TARGET             0x02
#define ECOMMUNITY_SITE_ORIGIN              0x03
#define ECOMMUNITY_LINK_BANDWIDTH           0x04
#define ECOMMUNITY_TRAFFIC_RATE             0x06 /* Flow Spec */
#define ECOMMUNITY_TRAFFIC_ACTION           0x07
#define ECOMMUNITY_REDIRECT_VRF             0x08
#define ECOMMUNITY_TRAFFIC_MARKING          0x09
#define ECOMMUNITY_REDIRECT_IP_NH           0x00
/* from IANA: bgp-extended-communities/bgp-extended-communities.xhtml
 * 0x0c Flow-spec Redirect to IPv4 - draft-ietf-idr-flowspec-redirect
 */
#define ECOMMUNITY_FLOWSPEC_REDIRECT_IPV4   0x0c
/* from draft-ietf-idr-flow-spec-v6-09
 * 0x0b Flow-spec Redirect to IPv6
 */
#define ECOMMUNITY_FLOWSPEC_REDIRECT_IPV6   0x0b

/* Low-order octet of the Extended Communities type field for EVPN types */
#define ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY  0x00
#define ECOMMUNITY_EVPN_SUBTYPE_ESI_LABEL    0x01
#define ECOMMUNITY_EVPN_SUBTYPE_ES_IMPORT_RT 0x02
#define ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC    0x03
#define ECOMMUNITY_EVPN_SUBTYPE_DF_ELECTION 0x06
#define ECOMMUNITY_EVPN_SUBTYPE_DEF_GW       0x0d
#define ECOMMUNITY_EVPN_SUBTYPE_ND           0x08

#define ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY_FLAG_STICKY 0x01

/* DF alg bits - only lower 5 bits are applicable */
#define ECOMMUNITY_EVPN_SUBTYPE_DF_ALG_BITS 0x1f

#define ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG   0x01
#define ECOMMUNITY_EVPN_SUBTYPE_ND_OVERRIDE_FLAG 0x02
#define ECOMMUNITY_EVPN_SUBTYPE_PROXY_FLAG       0x04

#define ECOMMUNITY_EVPN_SUBTYPE_ESI_SA_FLAG (1 << 0) /* single-active */

/* Low-order octet of the Extended Communities type field for OPAQUE types */
#define ECOMMUNITY_OPAQUE_SUBTYPE_ENCAP     0x0c

/* Extended communities attribute string format.  */
#define ECOMMUNITY_FORMAT_ROUTE_MAP            0
#define ECOMMUNITY_FORMAT_COMMUNITY_LIST       1
#define ECOMMUNITY_FORMAT_DISPLAY              2

/* Extended Communities value is eight octet long.  */
#define ECOMMUNITY_SIZE                        8
#define IPV6_ECOMMUNITY_SIZE                  20

/* Extended Community Origin Validation State */
enum ecommunity_origin_validation_states {
	ECOMMUNITY_ORIGIN_VALIDATION_STATE_VALID,
	ECOMMUNITY_ORIGIN_VALIDATION_STATE_NOTFOUND,
	ECOMMUNITY_ORIGIN_VALIDATION_STATE_INVALID,
	ECOMMUNITY_ORIGIN_VALIDATION_STATE_NOTUSED
};

/* Extended Communities type flag.  */
#define ECOMMUNITY_FLAG_NON_TRANSITIVE      0x40

/* Extended Community readable string length */
#define ECOMMUNITY_STRLEN 64

/* Extended Communities attribute.  */
struct ecommunity {
	/* Reference counter.  */
	unsigned long refcnt;

	/* Size of Each Unit of Extended Communities attribute.
	 * to differentiate between IPv6 ext comm and ext comm
	 */
	uint8_t unit_size;

	/* Size of Extended Communities attribute.  */
	uint32_t size;

	/* Extended Communities value.  */
	uint8_t *val;

	/* Human readable format string.  */
	char *str;

	/* Disable IEEE floating-point encoding for extended community */
	bool disable_ieee_floating;
};

struct ecommunity_as {
	as_t as;
	uint32_t val;
};

struct ecommunity_ip {
	struct in_addr ip;
	uint16_t val;
};

struct ecommunity_ip6 {
	struct in6_addr ip;
	uint16_t val;
};

/* Extended community value is eight octet.  */
struct ecommunity_val {
	char val[ECOMMUNITY_SIZE];
};

/* IPv6 Extended community value is eight octet.  */
struct ecommunity_val_ipv6 {
	char val[IPV6_ECOMMUNITY_SIZE];
};

#define ecom_length_size(X, Y)    ((X)->size * (Y))

/*
 * Encode BGP Route Target AS:nn.
 */
static inline void encode_route_target_as(as_t as, uint32_t val,
					  struct ecommunity_val *eval)
{
	eval->val[0] = ECOMMUNITY_ENCODE_AS;
	eval->val[1] = ECOMMUNITY_ROUTE_TARGET;
	eval->val[2] = (as >> 8) & 0xff;
	eval->val[3] = as & 0xff;
	eval->val[4] = (val >> 24) & 0xff;
	eval->val[5] = (val >> 16) & 0xff;
	eval->val[6] = (val >> 8) & 0xff;
	eval->val[7] = val & 0xff;
}

/*
 * Encode BGP Route Target IP:nn.
 */
static inline void encode_route_target_ip(struct in_addr ip, uint16_t val,
					  struct ecommunity_val *eval)
{
	eval->val[0] = ECOMMUNITY_ENCODE_IP;
	eval->val[1] = ECOMMUNITY_ROUTE_TARGET;
	memcpy(&eval->val[2], &ip, sizeof(struct in_addr));
	eval->val[6] = (val >> 8) & 0xff;
	eval->val[7] = val & 0xff;
}

/*
 * Encode BGP Route Target AS4:nn.
 */
static inline void encode_route_target_as4(as_t as, uint16_t val,
					   struct ecommunity_val *eval)
{
	eval->val[0] = ECOMMUNITY_ENCODE_AS4;
	eval->val[1] = ECOMMUNITY_ROUTE_TARGET;
	eval->val[2] = (as >> 24) & 0xff;
	eval->val[3] = (as >> 16) & 0xff;
	eval->val[4] = (as >> 8) & 0xff;
	eval->val[5] = as & 0xff;
	eval->val[6] = (val >> 8) & 0xff;
	eval->val[7] = val & 0xff;
}

/* Helper function to convert uint32 to IEEE-754 Floating Point */
static uint32_t uint32_to_ieee_float_uint32(uint32_t u)
{
	union {
		float r;
		uint32_t d;
	} f = {.r = (float)u};

	return f.d;
}

/*
 * Encode BGP Link Bandwidth extended community
 *  bandwidth (bw) is in bytes-per-sec
 */
static inline void encode_lb_extcomm(as_t as, uint32_t bw, bool non_trans,
				     struct ecommunity_val *eval,
				     bool disable_ieee_floating)
{
	uint32_t bandwidth =
		disable_ieee_floating ? bw : uint32_to_ieee_float_uint32(bw);

	memset(eval, 0, sizeof(*eval));
	eval->val[0] = ECOMMUNITY_ENCODE_AS;
	if (non_trans)
		eval->val[0] |= ECOMMUNITY_FLAG_NON_TRANSITIVE;
	eval->val[1] = ECOMMUNITY_LINK_BANDWIDTH;
	eval->val[2] = (as >> 8) & 0xff;
	eval->val[3] = as & 0xff;
	eval->val[4] = (bandwidth >> 24) & 0xff;
	eval->val[5] = (bandwidth >> 16) & 0xff;
	eval->val[6] = (bandwidth >> 8) & 0xff;
	eval->val[7] = bandwidth & 0xff;
}

static inline void encode_origin_validation_state(enum rpki_states state,
						  struct ecommunity_val *eval)
{
	enum ecommunity_origin_validation_states ovs_state =
		ECOMMUNITY_ORIGIN_VALIDATION_STATE_NOTUSED;

	switch (state) {
	case RPKI_VALID:
		ovs_state = ECOMMUNITY_ORIGIN_VALIDATION_STATE_VALID;
		break;
	case RPKI_NOTFOUND:
		ovs_state = ECOMMUNITY_ORIGIN_VALIDATION_STATE_NOTFOUND;
		break;
	case RPKI_INVALID:
		ovs_state = ECOMMUNITY_ORIGIN_VALIDATION_STATE_INVALID;
		break;
	case RPKI_NOT_BEING_USED:
		break;
	}

	memset(eval, 0, sizeof(*eval));
	eval->val[0] = ECOMMUNITY_ENCODE_OPAQUE_NON_TRANS;
	eval->val[1] = ECOMMUNITY_ORIGIN_VALIDATION_STATE;
	eval->val[7] = ovs_state;
}

extern void ecommunity_init(void);
extern void ecommunity_finish(void);
extern void ecommunity_free(struct ecommunity **);
extern struct ecommunity *ecommunity_parse(uint8_t *, unsigned short,
					   bool disable_ieee_floating);
extern struct ecommunity *ecommunity_parse_ipv6(uint8_t *pnt,
						unsigned short length,
						bool disable_ieee_floating);
extern struct ecommunity *ecommunity_dup(struct ecommunity *);
extern struct ecommunity *ecommunity_merge(struct ecommunity *,
					   struct ecommunity *);
extern struct ecommunity *ecommunity_uniq_sort(struct ecommunity *);
extern struct ecommunity *ecommunity_intern(struct ecommunity *);
extern bool ecommunity_cmp(const void *arg1, const void *arg2);
extern void ecommunity_unintern(struct ecommunity **ecommunity);
extern unsigned int ecommunity_hash_make(const void *);
extern struct ecommunity *ecommunity_str2com(const char *, int, int);
extern struct ecommunity *ecommunity_str2com_ipv6(const char *str, int type,
						  int keyword_included);
extern char *ecommunity_ecom2str(struct ecommunity *, int, int);
extern void ecommunity_strfree(char **s);
extern bool ecommunity_include(struct ecommunity *e1, struct ecommunity *e2);
extern bool ecommunity_match(const struct ecommunity *,
			     const struct ecommunity *);
extern char *ecommunity_str(struct ecommunity *);
extern struct ecommunity_val *ecommunity_lookup(const struct ecommunity *,
						uint8_t, uint8_t);

extern bool ecommunity_add_val(struct ecommunity *ecom,
			       struct ecommunity_val *eval,
			       bool unique, bool overwrite);
extern bool ecommunity_add_val_ipv6(struct ecommunity *ecom,
				    struct ecommunity_val_ipv6 *eval,
				    bool unique, bool overwrite);

/* for vpn */
extern struct ecommunity *ecommunity_new(void);
extern bool ecommunity_strip(struct ecommunity *ecom, uint8_t type,
			     uint8_t subtype);
extern struct ecommunity *ecommunity_new(void);
extern bool ecommunity_del_val(struct ecommunity *ecom,
			       struct ecommunity_val *eval);
struct bgp_pbr_entry_action;
extern int ecommunity_fill_pbr_action(struct ecommunity_val *ecom_eval,
				      struct bgp_pbr_entry_action *api,
				      afi_t afi);

extern void bgp_compute_aggregate_ecommunity(
					struct bgp_aggregate *aggregate,
					struct ecommunity *ecommunity);

extern void bgp_compute_aggregate_ecommunity_hash(
					struct bgp_aggregate *aggregate,
					struct ecommunity *ecommunity);
extern void bgp_compute_aggregate_ecommunity_val(
					struct bgp_aggregate *aggregate);
extern void bgp_remove_ecommunity_from_aggregate(
					struct bgp_aggregate *aggregate,
					struct ecommunity *ecommunity);
extern void bgp_remove_ecomm_from_aggregate_hash(
					struct bgp_aggregate *aggregate,
					struct ecommunity *ecommunity);
extern void bgp_aggr_ecommunity_remove(void *arg);
extern const uint8_t *ecommunity_linkbw_present(struct ecommunity *ecom,
						uint32_t *bw);
extern struct ecommunity *ecommunity_replace_linkbw(as_t as,
						    struct ecommunity *ecom,
						    uint64_t cum_bw,
						    bool disable_ieee_floating);

static inline void ecommunity_strip_rts(struct ecommunity *ecom)
{
	uint8_t subtype = ECOMMUNITY_ROUTE_TARGET;

	ecommunity_strip(ecom, ECOMMUNITY_ENCODE_AS, subtype);
	ecommunity_strip(ecom, ECOMMUNITY_ENCODE_IP, subtype);
	ecommunity_strip(ecom, ECOMMUNITY_ENCODE_AS4, subtype);
}
extern struct ecommunity *
ecommunity_add_origin_validation_state(enum rpki_states rpki_state,
				       struct ecommunity *ecom);
#endif /* _QUAGGA_BGP_ECOMMUNITY_H */
Commit	Line	Data
acddc0ed	1	// SPDX-License-Identifier: GPL-2.0-or-later
718e3744	2	/* BGP Extended Communities Attribute.
896014f4	3	* Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
896014f4	4	*/
718e3744	5
00d252cb	6	#ifndef _QUAGGA_BGP_ECOMMUNITY_H
	7	#define _QUAGGA_BGP_ECOMMUNITY_H
	8
5b820d9e	9	#include "bgpd/bgp_route.h"
7b27cf7b	10	#include "bgpd/bgp_rpki.h"
f4bd90c5	11	#include "bgpd/bgpd.h"
5b820d9e	12
7e3ebfd1	13	/* Refer to rfc7153 for the IANA registry definitions. These are
	14	* updated by other standards like rfc7674.
	15	*/
718e3744	16	/* High-order octet of the Extended Communities type field. */
	17	#define ECOMMUNITY_ENCODE_AS 0x00
	18	#define ECOMMUNITY_ENCODE_IP 0x01
0b2aa3a0	19	#define ECOMMUNITY_ENCODE_AS4 0x02
0014c301	20	#define ECOMMUNITY_ENCODE_OPAQUE 0x03
e82202b7	21	#define ECOMMUNITY_ENCODE_EVPN 0x06
b72220fc	22	#define ECOMMUNITY_ENCODE_REDIRECT_IP_NH 0x08 /* Flow Spec */
7e3ebfd1	23	/* Generic Transitive Experimental */
	24	#define ECOMMUNITY_ENCODE_TRANS_EXP 0x80
	25
a8d72b61 PG	26	/* RFC7674 */
	27	#define ECOMMUNITY_EXTENDED_COMMUNITY_PART_2 0x81
	28	#define ECOMMUNITY_EXTENDED_COMMUNITY_PART_3 0x82
718e3744	29
7e3ebfd1	30	/* Non-transitive extended community types. */
	31	#define ECOMMUNITY_ENCODE_AS_NON_TRANS 0x40
	32	#define ECOMMUNITY_ENCODE_IP_NON_TRANS 0x41
	33	#define ECOMMUNITY_ENCODE_AS4_NON_TRANS 0x42
	34	#define ECOMMUNITY_ENCODE_OPAQUE_NON_TRANS 0x43
	35
0014c301	36	/* Low-order octet of the Extended Communities type field. */
7e3ebfd1	37	/* Note: This really depends on the high-order octet. This means that
	38	* multiple definitions for the same value are possible.
	39	*/
7b27cf7b	40	#define ECOMMUNITY_ORIGIN_VALIDATION_STATE 0x00
718e3744	41	#define ECOMMUNITY_ROUTE_TARGET 0x02
718e3744	42	#define ECOMMUNITY_SITE_ORIGIN 0x03
650b0511	43	#define ECOMMUNITY_LINK_BANDWIDTH 0x04
a8d72b61 PG	44	#define ECOMMUNITY_TRAFFIC_RATE 0x06 /* Flow Spec */
	45	#define ECOMMUNITY_TRAFFIC_ACTION 0x07
	46	#define ECOMMUNITY_REDIRECT_VRF 0x08
	47	#define ECOMMUNITY_TRAFFIC_MARKING 0x09
	48	#define ECOMMUNITY_REDIRECT_IP_NH 0x00
2551b26e PG	49	/* from IANA: bgp-extended-communities/bgp-extended-communities.xhtml
	50	* 0x0c Flow-spec Redirect to IPv4 - draft-ietf-idr-flowspec-redirect
	51	*/
	52	#define ECOMMUNITY_FLOWSPEC_REDIRECT_IPV4 0x0c
9a659715 PG	53	/* from draft-ietf-idr-flow-spec-v6-09
	54	* 0x0b Flow-spec Redirect to IPv6
	55	*/
	56	#define ECOMMUNITY_FLOWSPEC_REDIRECT_IPV6 0x0b
718e3744	57
128ea8ab	58	/* Low-order octet of the Extended Communities type field for EVPN types */
1e27ef50 PG	59	#define ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY 0x00
	60	#define ECOMMUNITY_EVPN_SUBTYPE_ESI_LABEL 0x01
	61	#define ECOMMUNITY_EVPN_SUBTYPE_ES_IMPORT_RT 0x02
	62	#define ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC 0x03
74e2bd89	63	#define ECOMMUNITY_EVPN_SUBTYPE_DF_ELECTION 0x06
1e27ef50	64	#define ECOMMUNITY_EVPN_SUBTYPE_DEF_GW 0x0d
68e33151	65	#define ECOMMUNITY_EVPN_SUBTYPE_ND 0x08
1e27ef50	66
128ea8ab	67	#define ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY_FLAG_STICKY 0x01
7904e9fd	68
74e2bd89 AK	69	/* DF alg bits - only lower 5 bits are applicable */
	70	#define ECOMMUNITY_EVPN_SUBTYPE_DF_ALG_BITS 0x1f
	71
7904e9fd AK	72	#define ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG 0x01
	73	#define ECOMMUNITY_EVPN_SUBTYPE_ND_OVERRIDE_FLAG 0x02
	74	#define ECOMMUNITY_EVPN_SUBTYPE_PROXY_FLAG 0x04
128ea8ab	75
4248407b AK	76	#define ECOMMUNITY_EVPN_SUBTYPE_ESI_SA_FLAG (1 << 0) /* single-active */
4248407b AK	77
0014c301 LB	78	/* Low-order octet of the Extended Communities type field for OPAQUE types */
	79	#define ECOMMUNITY_OPAQUE_SUBTYPE_ENCAP 0x0c
	80
718e3744	81	/* Extended communities attribute string format. */
	82	#define ECOMMUNITY_FORMAT_ROUTE_MAP 0
	83	#define ECOMMUNITY_FORMAT_COMMUNITY_LIST 1
	84	#define ECOMMUNITY_FORMAT_DISPLAY 2
	85
	86	/* Extended Communities value is eight octet long. */
	87	#define ECOMMUNITY_SIZE 8
c6423c31	88	#define IPV6_ECOMMUNITY_SIZE 20
718e3744	89
7b27cf7b DA	90	/* Extended Community Origin Validation State */
7b27cf7b DA	91	enum ecommunity_origin_validation_states {
7b27cf7b DA	92	ECOMMUNITY_ORIGIN_VALIDATION_STATE_VALID,
7b27cf7b DA	93	ECOMMUNITY_ORIGIN_VALIDATION_STATE_NOTFOUND,
324e8b1f DA	94	ECOMMUNITY_ORIGIN_VALIDATION_STATE_INVALID,
324e8b1f DA	95	ECOMMUNITY_ORIGIN_VALIDATION_STATE_NOTUSED
7b27cf7b DA	96	};
7b27cf7b DA	97
4372df71	98	/* Extended Communities type flag. */
7c40bf39	99	#define ECOMMUNITY_FLAG_NON_TRANSITIVE 0x40
4372df71	100
f5e04c75 PR	101	/* Extended Community readable string length */
	102	#define ECOMMUNITY_STRLEN 64
	103
718e3744	104	/* Extended Communities attribute. */
d62a17ae	105	struct ecommunity {
	106	/* Reference counter. */
	107	unsigned long refcnt;
718e3744	108
9a659715 PG	109	/* Size of Each Unit of Extended Communities attribute.
	110	* to differentiate between IPv6 ext comm and ext comm
	111	*/
c6423c31	112	uint8_t unit_size;
9a659715	113
d62a17ae	114	/* Size of Extended Communities attribute. */
f6e07e1b	115	uint32_t size;
718e3744	116
d62a17ae	117	/* Extended Communities value. */
d7c0a89a	118	uint8_t *val;
718e3744	119
d62a17ae	120	/* Human readable format string. */
d62a17ae	121	char *str;
27aa23a4 DA	122
	123	/* Disable IEEE floating-point encoding for extended community */
	124	bool disable_ieee_floating;
718e3744	125	};
718e3744	126
5a0ccebf QY	127	struct ecommunity_as {
	128	as_t as;
	129	uint32_t val;
	130	};
	131
	132	struct ecommunity_ip {
	133	struct in_addr ip;
	134	uint16_t val;
	135	};
	136
9a659715 PG	137	struct ecommunity_ip6 {
	138	struct in6_addr ip;
	139	uint16_t val;
	140	};
	141
718e3744	142	/* Extended community value is eight octet. */
d62a17ae	143	struct ecommunity_val {
d62a17ae	144	char val[ECOMMUNITY_SIZE];
718e3744	145	};
718e3744	146
9a659715 PG	147	/* IPv6 Extended community value is eight octet. */
	148	struct ecommunity_val_ipv6 {
	149	char val[IPV6_ECOMMUNITY_SIZE];
	150	};
	151
	152	#define ecom_length_size(X, Y) ((X)->size * (Y))
	153
c5900768	154	/*
	155	* Encode BGP Route Target AS:nn.
	156	*/
d7c0a89a	157	static inline void encode_route_target_as(as_t as, uint32_t val,
d62a17ae	158	struct ecommunity_val *eval)
c5900768	159	{
d62a17ae	160	eval->val[0] = ECOMMUNITY_ENCODE_AS;
	161	eval->val[1] = ECOMMUNITY_ROUTE_TARGET;
	162	eval->val[2] = (as >> 8) & 0xff;
	163	eval->val[3] = as & 0xff;
	164	eval->val[4] = (val >> 24) & 0xff;
	165	eval->val[5] = (val >> 16) & 0xff;
	166	eval->val[6] = (val >> 8) & 0xff;
	167	eval->val[7] = val & 0xff;
c5900768	168	}
	169
	170	/*
	171	* Encode BGP Route Target IP:nn.
	172	*/
d7c0a89a	173	static inline void encode_route_target_ip(struct in_addr ip, uint16_t val,
d62a17ae	174	struct ecommunity_val *eval)
c5900768	175	{
d62a17ae	176	eval->val[0] = ECOMMUNITY_ENCODE_IP;
	177	eval->val[1] = ECOMMUNITY_ROUTE_TARGET;
	178	memcpy(&eval->val[2], &ip, sizeof(struct in_addr));
	179	eval->val[6] = (val >> 8) & 0xff;
	180	eval->val[7] = val & 0xff;
c5900768	181	}
	182
	183	/*
	184	* Encode BGP Route Target AS4:nn.
	185	*/
d7c0a89a	186	static inline void encode_route_target_as4(as_t as, uint16_t val,
d62a17ae	187	struct ecommunity_val *eval)
c5900768	188	{
d62a17ae	189	eval->val[0] = ECOMMUNITY_ENCODE_AS4;
	190	eval->val[1] = ECOMMUNITY_ROUTE_TARGET;
	191	eval->val[2] = (as >> 24) & 0xff;
	192	eval->val[3] = (as >> 16) & 0xff;
	193	eval->val[4] = (as >> 8) & 0xff;
	194	eval->val[5] = as & 0xff;
	195	eval->val[6] = (val >> 8) & 0xff;
	196	eval->val[7] = val & 0xff;
c5900768	197	}
c5900768	198
8bcaad3d DA	199	/* Helper function to convert uint32 to IEEE-754 Floating Point */
	200	static uint32_t uint32_to_ieee_float_uint32(uint32_t u)
	201	{
	202	union {
	203	float r;
	204	uint32_t d;
	205	} f = {.r = (float)u};
	206
	207	return f.d;
	208	}
	209
ca9ac3ef	210	/*
	211	* Encode BGP Link Bandwidth extended community
	212	* bandwidth (bw) is in bytes-per-sec
	213	*/
	214	static inline void encode_lb_extcomm(as_t as, uint32_t bw, bool non_trans,
27aa23a4 DA	215	struct ecommunity_val *eval,
27aa23a4 DA	216	bool disable_ieee_floating)
ca9ac3ef	217	{
27aa23a4 DA	218	uint32_t bandwidth =
27aa23a4 DA	219	disable_ieee_floating ? bw : uint32_to_ieee_float_uint32(bw);
8bcaad3d	220
ca9ac3ef	221	memset(eval, 0, sizeof(*eval));
	222	eval->val[0] = ECOMMUNITY_ENCODE_AS;
	223	if (non_trans)
	224	eval->val[0] \|= ECOMMUNITY_FLAG_NON_TRANSITIVE;
	225	eval->val[1] = ECOMMUNITY_LINK_BANDWIDTH;
	226	eval->val[2] = (as >> 8) & 0xff;
	227	eval->val[3] = as & 0xff;
8bcaad3d DA	228	eval->val[4] = (bandwidth >> 24) & 0xff;
	229	eval->val[5] = (bandwidth >> 16) & 0xff;
	230	eval->val[6] = (bandwidth >> 8) & 0xff;
	231	eval->val[7] = bandwidth & 0xff;
ca9ac3ef	232	}
ca9ac3ef	233
7b27cf7b DA	234	static inline void encode_origin_validation_state(enum rpki_states state,
	235	struct ecommunity_val *eval)
	236	{
	237	enum ecommunity_origin_validation_states ovs_state =
	238	ECOMMUNITY_ORIGIN_VALIDATION_STATE_NOTUSED;
	239
	240	switch (state) {
	241	case RPKI_VALID:
	242	ovs_state = ECOMMUNITY_ORIGIN_VALIDATION_STATE_VALID;
	243	break;
	244	case RPKI_NOTFOUND:
	245	ovs_state = ECOMMUNITY_ORIGIN_VALIDATION_STATE_NOTFOUND;
	246	break;
	247	case RPKI_INVALID:
	248	ovs_state = ECOMMUNITY_ORIGIN_VALIDATION_STATE_INVALID;
	249	break;
	250	case RPKI_NOT_BEING_USED:
	251	break;
	252	}
	253
	254	memset(eval, 0, sizeof(*eval));
	255	eval->val[0] = ECOMMUNITY_ENCODE_OPAQUE_NON_TRANS;
	256	eval->val[1] = ECOMMUNITY_ORIGIN_VALIDATION_STATE;
	257	eval->val[7] = ovs_state;
	258	}
	259
d62a17ae	260	extern void ecommunity_init(void);
	261	extern void ecommunity_finish(void);
	262	extern void ecommunity_free(struct ecommunity **);
27aa23a4 DA	263	extern struct ecommunity ecommunity_parse(uint8_t , unsigned short,
27aa23a4 DA	264	bool disable_ieee_floating);
9a659715	265	extern struct ecommunity ecommunity_parse_ipv6(uint8_t pnt,
27aa23a4 DA	266	unsigned short length,
27aa23a4 DA	267	bool disable_ieee_floating);
d62a17ae	268	extern struct ecommunity ecommunity_dup(struct ecommunity );
	269	extern struct ecommunity ecommunity_merge(struct ecommunity ,
	270	struct ecommunity *);
	271	extern struct ecommunity ecommunity_uniq_sort(struct ecommunity );
	272	extern struct ecommunity ecommunity_intern(struct ecommunity );
74df8d6d	273	extern bool ecommunity_cmp(const void arg1, const void arg2);
df7d4670	274	extern void ecommunity_unintern(struct ecommunity **ecommunity);
d8b87afe	275	extern unsigned int ecommunity_hash_make(const void *);
d62a17ae	276	extern struct ecommunity ecommunity_str2com(const char , int, int);
9a659715 PG	277	extern struct ecommunity ecommunity_str2com_ipv6(const char str, int type,
9a659715 PG	278	int keyword_included);
d62a17ae	279	extern char ecommunity_ecom2str(struct ecommunity , int, int);
c7ee6c35	280	extern void ecommunity_strfree(char **s);
2d7cdc5b	281	extern bool ecommunity_include(struct ecommunity e1, struct ecommunity e2);
3dc339cd DA	282	extern bool ecommunity_match(const struct ecommunity *,
3dc339cd DA	283	const struct ecommunity *);
d62a17ae	284	extern char ecommunity_str(struct ecommunity );
	285	extern struct ecommunity_val ecommunity_lookup(const struct ecommunity ,
	286	uint8_t, uint8_t);
9a659715	287
3dc339cd	288	extern bool ecommunity_add_val(struct ecommunity *ecom,
1207a5bc	289	struct ecommunity_val *eval,
1207a5bc	290	bool unique, bool overwrite);
9a659715 PG	291	extern bool ecommunity_add_val_ipv6(struct ecommunity *ecom,
	292	struct ecommunity_val_ipv6 *eval,
	293	bool unique, bool overwrite);
00d252cb	294
65efcfce	295	/* for vpn */
d62a17ae	296	extern struct ecommunity *ecommunity_new(void);
3dc339cd DA	297	extern bool ecommunity_strip(struct ecommunity *ecom, uint8_t type,
3dc339cd DA	298	uint8_t subtype);
d62a17ae	299	extern struct ecommunity *ecommunity_new(void);
3dc339cd DA	300	extern bool ecommunity_del_val(struct ecommunity *ecom,
3dc339cd DA	301	struct ecommunity_val *eval);
dacf6ec1 PG	302	struct bgp_pbr_entry_action;
dacf6ec1 PG	303	extern int ecommunity_fill_pbr_action(struct ecommunity_val *ecom_eval,
f01e580f PG	304	struct bgp_pbr_entry_action *api,
f01e580f PG	305	afi_t afi);
dacf6ec1	306
5b820d9e NT	307	extern void bgp_compute_aggregate_ecommunity(
	308	struct bgp_aggregate *aggregate,
	309	struct ecommunity *ecommunity);
4edd83f9	310
	311	extern void bgp_compute_aggregate_ecommunity_hash(
	312	struct bgp_aggregate *aggregate,
	313	struct ecommunity *ecommunity);
	314	extern void bgp_compute_aggregate_ecommunity_val(
	315	struct bgp_aggregate *aggregate);
5b820d9e NT	316	extern void bgp_remove_ecommunity_from_aggregate(
	317	struct bgp_aggregate *aggregate,
	318	struct ecommunity *ecommunity);
4edd83f9	319	extern void bgp_remove_ecomm_from_aggregate_hash(
	320	struct bgp_aggregate *aggregate,
	321	struct ecommunity *ecommunity);
5b820d9e	322	extern void bgp_aggr_ecommunity_remove(void *arg);
d901dc13	323	extern const uint8_t ecommunity_linkbw_present(struct ecommunity ecom,
d901dc13	324	uint32_t *bw);
7b651a32	325	extern struct ecommunity *ecommunity_replace_linkbw(as_t as,
27aa23a4 DA	326	struct ecommunity *ecom,
	327	uint64_t cum_bw,
	328	bool disable_ieee_floating);
e8bfa90e	329
	330	static inline void ecommunity_strip_rts(struct ecommunity *ecom)
	331	{
	332	uint8_t subtype = ECOMMUNITY_ROUTE_TARGET;
	333
	334	ecommunity_strip(ecom, ECOMMUNITY_ENCODE_AS, subtype);
	335	ecommunity_strip(ecom, ECOMMUNITY_ENCODE_IP, subtype);
	336	ecommunity_strip(ecom, ECOMMUNITY_ENCODE_AS4, subtype);
	337	}
7b27cf7b DA	338	extern struct ecommunity *
	339	ecommunity_add_origin_validation_state(enum rpki_states rpki_state,
	340	struct ecommunity *ecom);
00d252cb	341	#endif /* _QUAGGA_BGP_ECOMMUNITY_H */