[mirror_frr.git] / bgpd / bgp_evpn_private.h

/* BGP EVPN internal definitions
 * Copyright (C) 2017 Cumulus Networks, Inc.
 *
 * This file is part of FRR.
 *
 * FRR 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.
 *
 * FRR 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 FRR; see the file COPYING.  If not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */

#ifndef _BGP_EVPN_PRIVATE_H
#define _BGP_EVPN_PRIVATE_H

#include "vxlan.h"
#include "zebra.h"

#include "bgpd/bgpd.h"
#include "bgpd/bgp_ecommunity.h"

#define RT_ADDRSTRLEN 28

/* EVPN prefix lengths. This reprsent the sizeof struct prefix_evpn  */
#define EVPN_TYPE_2_ROUTE_PREFIXLEN      224
#define EVPN_TYPE_3_ROUTE_PREFIXLEN      224
#define EVPN_TYPE_5_ROUTE_PREFIXLEN      224

/* EVPN route types. */
typedef enum {
	BGP_EVPN_AD_ROUTE = 1,    /* Ethernet Auto-Discovery (A-D) route */
	BGP_EVPN_MAC_IP_ROUTE,    /* MAC/IP Advertisement route */
	BGP_EVPN_IMET_ROUTE,      /* Inclusive Multicast Ethernet Tag route */
	BGP_EVPN_ES_ROUTE,	/* Ethernet Segment route */
	BGP_EVPN_IP_PREFIX_ROUTE, /* IP Prefix route */
} bgp_evpn_route_type;

/*
 * Hash table of EVIs. Right now, the only type of EVI supported is with
 * VxLAN encapsulation, hence each EVI corresponds to a L2 VNI.
 * The VNIs are not "created" through BGP but through some other interface
 * on the system. This table stores VNIs that BGP comes to know as present
 * on the system (through interaction with zebra) as well as pre-configured
 * VNIs (which need to be defined in the system to become "live").
 */
struct bgpevpn {
	vni_t vni;
	vrf_id_t tenant_vrf_id;
	u_int32_t flags;
#define VNI_FLAG_CFGD              0x1  /* VNI is user configured */
#define VNI_FLAG_LIVE              0x2  /* VNI is "live" */
#define VNI_FLAG_RD_CFGD           0x4  /* RD is user configured. */
#define VNI_FLAG_IMPRT_CFGD        0x8  /* Import RT is user configured */
#define VNI_FLAG_EXPRT_CFGD        0x10 /* Export RT is user configured */

	struct bgp *bgp_vrf; /* back pointer to the vrf instance */

	/* Flag to indicate if we are advertising the g/w mac ip for this VNI*/
	u_int8_t advertise_gw_macip;

	/* Flag to indicate if we are advertising subnet for this VNI */
	u_int8_t advertise_subnet;

	/* Id for deriving the RD automatically for this VNI */
	u_int16_t rd_id;

	/* RD for this VNI. */
	struct prefix_rd prd;

	/* Route type 3 field */
	struct in_addr originator_ip;

	/* Import and Export RTs. */
	struct list *import_rtl;
	struct list *export_rtl;

	/* Route table for EVPN routes for this VNI. */
	struct bgp_table *route_table;

	QOBJ_FIELDS
};

DECLARE_QOBJ_TYPE(bgpevpn)

/* Mapping of Import RT to VNIs.
 * The Import RTs of all VNIs are maintained in a hash table with each
 * RT linking to all VNIs that will import routes matching this RT.
 */
struct irt_node {
	/* RT */
	struct ecommunity_val rt;

	/* List of VNIs importing routes matching this RT. */
	struct list *vnis;
};

/* Mapping of Import RT to VRFs.
 * The Import RTs of all VRFss are maintained in a hash table with each
 * RT linking to all VRFs that will import routes matching this RT.
 */
struct vrf_irt_node {
	/* RT */
	struct ecommunity_val rt;

	/* List of VNIs importing routes matching this RT. */
	struct list *vrfs;
};


#define RT_TYPE_IMPORT 1
#define RT_TYPE_EXPORT 2
#define RT_TYPE_BOTH   3

static inline int is_vrf_rd_configured(struct bgp *bgp_vrf)
{
	return (CHECK_FLAG(bgp_vrf->vrf_flags,
			   BGP_VRF_RD_CFGD));
}

static inline int bgp_evpn_vrf_rd_matches_existing(struct bgp *bgp_vrf,
						   struct prefix_rd *prd)
{
	return (memcmp(&bgp_vrf->vrf_prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
}

static inline vni_t bgpevpn_get_l3vni(struct bgpevpn *vpn)
{
	return vpn->bgp_vrf ? vpn->bgp_vrf->l3vni : 0;
}

static inline void bgpevpn_get_rmac(struct bgpevpn *vpn, struct ethaddr *rmac)
{
	memset(rmac, 0, sizeof(struct ethaddr));
	if (!vpn->bgp_vrf)
		return;
	memcpy(rmac, &vpn->bgp_vrf->rmac, sizeof(struct ethaddr));
}

static inline struct list *bgpevpn_get_vrf_export_rtl(struct bgpevpn *vpn)
{
	if (!vpn->bgp_vrf)
		return NULL;

	return vpn->bgp_vrf->vrf_export_rtl;
}

static inline struct list *bgpevpn_get_vrf_import_rtl(struct bgpevpn *vpn)
{
	if (!vpn->bgp_vrf)
		return NULL;

	return vpn->bgp_vrf->vrf_import_rtl;
}

static inline void bgpevpn_unlink_from_l3vni(struct bgpevpn *vpn)
{
	/* bail if vpn is not associated to bgp_vrf */
	if (!vpn->bgp_vrf)
		return;

	listnode_delete(vpn->bgp_vrf->l2vnis, vpn);

	/* remove the backpointer to the vrf instance */
	vpn->bgp_vrf = NULL;
}

static inline void bgpevpn_link_to_l3vni(struct bgpevpn *vpn)
{
	struct bgp *bgp_vrf = NULL;

	/* bail if vpn is already associated to vrf */
	if (vpn->bgp_vrf)
		return;

	bgp_vrf = bgp_lookup_by_vrf_id(vpn->tenant_vrf_id);
	if (!bgp_vrf || !bgp_vrf->l2vnis)
		return;

	/* associate the vpn to the bgp_vrf instance */
	vpn->bgp_vrf = bgp_vrf;
	listnode_add_sort(bgp_vrf->l2vnis, vpn);
}

static inline int is_vni_configured(struct bgpevpn *vpn)
{
	return (CHECK_FLAG(vpn->flags, VNI_FLAG_CFGD));
}

static inline int is_vni_live(struct bgpevpn *vpn)
{
	return (CHECK_FLAG(vpn->flags, VNI_FLAG_LIVE));
}

static inline int is_rd_configured(struct bgpevpn *vpn)
{
	return (CHECK_FLAG(vpn->flags, VNI_FLAG_RD_CFGD));
}

static inline int bgp_evpn_rd_matches_existing(struct bgpevpn *vpn,
					       struct prefix_rd *prd)
{
	return (memcmp(&vpn->prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
}

static inline int is_import_rt_configured(struct bgpevpn *vpn)
{
	return (CHECK_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD));
}

static inline int is_export_rt_configured(struct bgpevpn *vpn)
{
	return (CHECK_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD));
}

static inline int is_vni_param_configured(struct bgpevpn *vpn)
{
	return (is_rd_configured(vpn) || is_import_rt_configured(vpn)
		|| is_export_rt_configured(vpn));
}

static inline void encode_rmac_extcomm(struct ecommunity_val *eval,
				       struct ethaddr *rmac)
{
	memset(eval, 0, sizeof(*eval));
	eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC;
	memcpy(&eval->val[2], rmac, ETH_ALEN);
}

static inline void encode_default_gw_extcomm(struct ecommunity_val *eval)
{
	memset(eval, 0, sizeof(*eval));
	eval->val[0] = ECOMMUNITY_ENCODE_OPAQUE;
	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_DEF_GW;
}

static inline void encode_mac_mobility_extcomm(int static_mac, u_int32_t seq,
					       struct ecommunity_val *eval)
{
	memset(eval, 0, sizeof(*eval));
	eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY;
	if (static_mac)
		eval->val[2] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY_FLAG_STICKY;
	eval->val[4] = (seq >> 24) & 0xff;
	eval->val[5] = (seq >> 16) & 0xff;
	eval->val[6] = (seq >> 8) & 0xff;
	eval->val[7] = seq & 0xff;
}

static inline void ip_prefix_from_type5_prefix(struct prefix_evpn *evp,
					       struct prefix *ip)
{
	memset(ip, 0, sizeof(struct prefix));
	if (IS_EVPN_PREFIX_IPADDR_V4(evp)) {
		ip->family = AF_INET;
		ip->prefixlen = evp->prefix.ip_prefix_length;
		memcpy(&(ip->u.prefix4),
		       &(evp->prefix.ip.ip),
		       IPV4_MAX_BYTELEN);
	} else if (IS_EVPN_PREFIX_IPADDR_V6(evp)) {
		ip->family = AF_INET6;
		ip->prefixlen = evp->prefix.ip_prefix_length;
		memcpy(&(ip->u.prefix6),
		       &(evp->prefix.ip.ip),
		       IPV6_MAX_BYTELEN);
	}
}

static inline void ip_prefix_from_type2_prefix(struct prefix_evpn *evp,
					       struct prefix *ip)
{
	memset(ip, 0, sizeof(struct prefix));
	if (IS_EVPN_PREFIX_IPADDR_V4(evp)) {
		ip->family = AF_INET;
		ip->prefixlen = IPV4_MAX_BITLEN;
		memcpy(&(ip->u.prefix4),
		       &(evp->prefix.ip.ip),
		       IPV4_MAX_BYTELEN);
	} else if (IS_EVPN_PREFIX_IPADDR_V6(evp)) {
		ip->family = AF_INET6;
		ip->prefixlen = IPV6_MAX_BITLEN;
		memcpy(&(ip->u.prefix6),
		       &(evp->prefix.ip.ip),
		       IPV6_MAX_BYTELEN);
	}
}

static inline void build_evpn_type2_prefix(struct prefix_evpn *p,
					   struct ethaddr *mac,
					   struct ipaddr *ip)
{
	memset(p, 0, sizeof(struct prefix_evpn));
	p->family = AF_EVPN;
	p->prefixlen = EVPN_TYPE_2_ROUTE_PREFIXLEN;
	p->prefix.route_type = BGP_EVPN_MAC_IP_ROUTE;
	memcpy(&p->prefix.mac.octet, mac->octet, ETH_ALEN);
	p->prefix.ip.ipa_type = IPADDR_NONE;
	if (ip)
		memcpy(&p->prefix.ip, ip, sizeof(*ip));
}

static inline void build_type5_prefix_from_ip_prefix(struct prefix_evpn *evp,
						     struct prefix *ip_prefix)
{
	struct ipaddr ip;

	memset(&ip, 0, sizeof(struct ipaddr));
	if (ip_prefix->family == AF_INET) {
		ip.ipa_type = IPADDR_V4;
		memcpy(&ip.ipaddr_v4, &ip_prefix->u.prefix4,
		       sizeof(struct in_addr));
	} else {
		ip.ipa_type = IPADDR_V6;
		memcpy(&ip.ipaddr_v6, &ip_prefix->u.prefix6,
		       sizeof(struct in6_addr));
	}

	memset(evp, 0, sizeof(struct prefix_evpn));
	evp->family = AF_EVPN;
	evp->prefixlen = EVPN_TYPE_5_ROUTE_PREFIXLEN;
	evp->prefix.ip_prefix_length = ip_prefix->prefixlen;
	evp->prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE;
	evp->prefix.ip.ipa_type = ip.ipa_type;
	memcpy(&evp->prefix.ip, &ip, sizeof(struct ipaddr));
}

static inline void build_evpn_type3_prefix(struct prefix_evpn *p,
					   struct in_addr originator_ip)
{
	memset(p, 0, sizeof(struct prefix_evpn));
	p->family = AF_EVPN;
	p->prefixlen = EVPN_TYPE_3_ROUTE_PREFIXLEN;
	p->prefix.route_type = BGP_EVPN_IMET_ROUTE;
	p->prefix.ip.ipa_type = IPADDR_V4;
	p->prefix.ip.ipaddr_v4 = originator_ip;
}

static inline int advertise_type5_routes(struct bgp *bgp_vrf,
					 afi_t afi)
{
	if (!bgp_vrf->l3vni)
		return 0;

	if (afi == AFI_IP &&
	    CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_ADVERTISE_IPV4_IN_EVPN))
		return 1;

	if (afi == AFI_IP6 &&
	    CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_ADVERTISE_IPV6_IN_EVPN))
		return 1;

	return 0;
}

extern void evpn_rt_delete_auto(struct bgp*, vni_t, struct list*);
extern void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf,
						 struct ecommunity *ecomadd);
extern void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf,
						   struct ecommunity *ecomdel);
extern void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf,
						 struct ecommunity *ecomadd);
extern void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf,
						   struct ecommunity *ecomdel);
extern int bgp_evpn_handle_export_rt_change(struct bgp *bgp,
					    struct bgpevpn *vpn);
extern void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw);
extern void bgp_evpn_handle_rd_change(struct bgp *bgp, struct bgpevpn *vpn,
				      int withdraw);
extern int bgp_evpn_install_routes(struct bgp *bgp, struct bgpevpn *vpn);
extern int bgp_evpn_uninstall_routes(struct bgp *bgp, struct bgpevpn *vpn);
extern void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf);
extern void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf);
extern void bgp_evpn_map_vni_to_its_rts(struct bgp *bgp, struct bgpevpn *vpn);
extern void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp,
					    struct bgpevpn *vpn);
extern void bgp_evpn_derive_auto_rt_import(struct bgp *bgp,
					   struct bgpevpn *vpn);
extern void bgp_evpn_derive_auto_rt_export(struct bgp *bgp,
					   struct bgpevpn *vpn);
extern void bgp_evpn_derive_auto_rd(struct bgp *bgp, struct bgpevpn *vpn);
extern void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp);
extern struct bgpevpn *bgp_evpn_lookup_vni(struct bgp *bgp, vni_t vni);
extern struct bgpevpn *bgp_evpn_new(struct bgp *bgp, vni_t vni,
				    struct in_addr originator_ip,
				    vrf_id_t tenant_vrf_id);
extern void bgp_evpn_free(struct bgp *bgp, struct bgpevpn *vpn);
#endif /* _BGP_EVPN_PRIVATE_H */
Commit	Line	Data
a4168ebc	1	/* BGP EVPN internal definitions
	2	* Copyright (C) 2017 Cumulus Networks, Inc.
	3	*
	4	* This file is part of FRR.
	5	*
	6	* FRR 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	* FRR 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 FRR; 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	*/
	21
	22	#ifndef _BGP_EVPN_PRIVATE_H
	23	#define _BGP_EVPN_PRIVATE_H
	24
	25	#include "vxlan.h"
	26	#include "zebra.h"
	27
	28	#include "bgpd/bgpd.h"
	29	#include "bgpd/bgp_ecommunity.h"
	30
60466a63	31	#define RT_ADDRSTRLEN 28
9c92b5f7	32
e9fc2840	33	/* EVPN prefix lengths. This reprsent the sizeof struct prefix_evpn */
a4168ebc	34	#define EVPN_TYPE_2_ROUTE_PREFIXLEN 224
a4168ebc	35	#define EVPN_TYPE_3_ROUTE_PREFIXLEN 224
e9fc2840	36	#define EVPN_TYPE_5_ROUTE_PREFIXLEN 224
a4168ebc	37
a4168ebc	38	/* EVPN route types. */
d62a17ae	39	typedef enum {
	40	BGP_EVPN_AD_ROUTE = 1, /* Ethernet Auto-Discovery (A-D) route */
	41	BGP_EVPN_MAC_IP_ROUTE, /* MAC/IP Advertisement route */
	42	BGP_EVPN_IMET_ROUTE, /* Inclusive Multicast Ethernet Tag route */
	43	BGP_EVPN_ES_ROUTE, /* Ethernet Segment route */
	44	BGP_EVPN_IP_PREFIX_ROUTE, /* IP Prefix route */
a4168ebc	45	} bgp_evpn_route_type;
	46
	47	/*
	48	* Hash table of EVIs. Right now, the only type of EVI supported is with
	49	* VxLAN encapsulation, hence each EVI corresponds to a L2 VNI.
	50	* The VNIs are not "created" through BGP but through some other interface
	51	* on the system. This table stores VNIs that BGP comes to know as present
	52	* on the system (through interaction with zebra) as well as pre-configured
	53	* VNIs (which need to be defined in the system to become "live").
	54	*/
d62a17ae	55	struct bgpevpn {
d62a17ae	56	vni_t vni;
29c53922	57	vrf_id_t tenant_vrf_id;
d62a17ae	58	u_int32_t flags;
a4168ebc	59	#define VNI_FLAG_CFGD 0x1 /* VNI is user configured */
	60	#define VNI_FLAG_LIVE 0x2 /* VNI is "live" */
	61	#define VNI_FLAG_RD_CFGD 0x4 /* RD is user configured. */
	62	#define VNI_FLAG_IMPRT_CFGD 0x8 /* Import RT is user configured */
	63	#define VNI_FLAG_EXPRT_CFGD 0x10 /* Export RT is user configured */
	64
bc4606bd MK	65	struct bgp bgp_vrf; / back pointer to the vrf instance */
bc4606bd MK	66
1a98c087 MK	67	/* Flag to indicate if we are advertising the g/w mac ip for this VNI*/
	68	u_int8_t advertise_gw_macip;
	69
31310b25 MK	70	/* Flag to indicate if we are advertising subnet for this VNI */
	71	u_int8_t advertise_subnet;
	72
d62a17ae	73	/* Id for deriving the RD automatically for this VNI */
d62a17ae	74	u_int16_t rd_id;
a4168ebc	75
d62a17ae	76	/* RD for this VNI. */
d62a17ae	77	struct prefix_rd prd;
a4168ebc	78
d62a17ae	79	/* Route type 3 field */
d62a17ae	80	struct in_addr originator_ip;
a4168ebc	81
d62a17ae	82	/* Import and Export RTs. */
	83	struct list *import_rtl;
	84	struct list *export_rtl;
a4168ebc	85
d62a17ae	86	/* Route table for EVPN routes for this VNI. */
d62a17ae	87	struct bgp_table *route_table;
a4168ebc	88
d62a17ae	89	QOBJ_FIELDS
a4168ebc	90	};
	91
	92	DECLARE_QOBJ_TYPE(bgpevpn)
	93
	94	/* Mapping of Import RT to VNIs.
	95	* The Import RTs of all VNIs are maintained in a hash table with each
	96	* RT linking to all VNIs that will import routes matching this RT.
	97	*/
d62a17ae	98	struct irt_node {
	99	/* RT */
	100	struct ecommunity_val rt;
a4168ebc	101
d62a17ae	102	/* List of VNIs importing routes matching this RT. */
d62a17ae	103	struct list *vnis;
a4168ebc	104	};
a4168ebc	105
10ebe1ab MK	106	/* Mapping of Import RT to VRFs.
	107	* The Import RTs of all VRFss are maintained in a hash table with each
	108	* RT linking to all VRFs that will import routes matching this RT.
	109	*/
	110	struct vrf_irt_node {
	111	/* RT */
	112	struct ecommunity_val rt;
	113
	114	/* List of VNIs importing routes matching this RT. */
	115	struct list *vrfs;
	116	};
	117
	118
128ea8ab	119	#define RT_TYPE_IMPORT 1
	120	#define RT_TYPE_EXPORT 2
	121	#define RT_TYPE_BOTH 3
	122
676f83b9	123	static inline int is_vrf_rd_configured(struct bgp *bgp_vrf)
	124	{
	125	return (CHECK_FLAG(bgp_vrf->vrf_flags,
	126	BGP_VRF_RD_CFGD));
	127	}
	128
	129	static inline int bgp_evpn_vrf_rd_matches_existing(struct bgp *bgp_vrf,
	130	struct prefix_rd *prd)
	131	{
	132	return (memcmp(&bgp_vrf->vrf_prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
	133	}
	134
6d8c58b7 MK	135	static inline vni_t bgpevpn_get_l3vni(struct bgpevpn *vpn)
6d8c58b7 MK	136	{
bc4606bd	137	return vpn->bgp_vrf ? vpn->bgp_vrf->l3vni : 0;
6d8c58b7 MK	138	}
	139
	140	static inline void bgpevpn_get_rmac(struct bgpevpn vpn, struct ethaddr rmac)
	141	{
6d8c58b7	142	memset(rmac, 0, sizeof(struct ethaddr));
bc4606bd	143	if (!vpn->bgp_vrf)
6d8c58b7	144	return;
bc4606bd	145	memcpy(rmac, &vpn->bgp_vrf->rmac, sizeof(struct ethaddr));
6d8c58b7 MK	146	}
	147
	148	static inline struct list bgpevpn_get_vrf_export_rtl(struct bgpevpn vpn)
	149	{
bc4606bd	150	if (!vpn->bgp_vrf)
6d8c58b7 MK	151	return NULL;
6d8c58b7 MK	152
bc4606bd	153	return vpn->bgp_vrf->vrf_export_rtl;
6d8c58b7 MK	154	}
	155
	156	static inline struct list bgpevpn_get_vrf_import_rtl(struct bgpevpn vpn)
	157	{
bc4606bd	158	if (!vpn->bgp_vrf)
6d8c58b7 MK	159	return NULL;
6d8c58b7 MK	160
bc4606bd	161	return vpn->bgp_vrf->vrf_import_rtl;
6d8c58b7 MK	162	}
6d8c58b7 MK	163
6a8657d0 MK	164	static inline void bgpevpn_unlink_from_l3vni(struct bgpevpn *vpn)
6a8657d0 MK	165	{
bc4606bd MK	166	/* bail if vpn is not associated to bgp_vrf */
bc4606bd MK	167	if (!vpn->bgp_vrf)
6a8657d0	168	return;
bc4606bd MK	169
	170	listnode_delete(vpn->bgp_vrf->l2vnis, vpn);
	171
	172	/* remove the backpointer to the vrf instance */
	173	vpn->bgp_vrf = NULL;
6a8657d0 MK	174	}
	175
	176	static inline void bgpevpn_link_to_l3vni(struct bgpevpn *vpn)
	177	{
	178	struct bgp *bgp_vrf = NULL;
	179
bc4606bd MK	180	/* bail if vpn is already associated to vrf */
	181	if (vpn->bgp_vrf)
	182	return;
	183
6a8657d0 MK	184	bgp_vrf = bgp_lookup_by_vrf_id(vpn->tenant_vrf_id);
	185	if (!bgp_vrf \|\| !bgp_vrf->l2vnis)
	186	return;
bc4606bd MK	187
	188	/* associate the vpn to the bgp_vrf instance */
	189	vpn->bgp_vrf = bgp_vrf;
6a8657d0 MK	190	listnode_add_sort(bgp_vrf->l2vnis, vpn);
	191	}
	192
d62a17ae	193	static inline int is_vni_configured(struct bgpevpn *vpn)
128ea8ab	194	{
d62a17ae	195	return (CHECK_FLAG(vpn->flags, VNI_FLAG_CFGD));
128ea8ab	196	}
128ea8ab	197
d62a17ae	198	static inline int is_vni_live(struct bgpevpn *vpn)
128ea8ab	199	{
d62a17ae	200	return (CHECK_FLAG(vpn->flags, VNI_FLAG_LIVE));
128ea8ab	201	}
128ea8ab	202
d62a17ae	203	static inline int is_rd_configured(struct bgpevpn *vpn)
128ea8ab	204	{
d62a17ae	205	return (CHECK_FLAG(vpn->flags, VNI_FLAG_RD_CFGD));
128ea8ab	206	}
128ea8ab	207
d62a17ae	208	static inline int bgp_evpn_rd_matches_existing(struct bgpevpn *vpn,
d62a17ae	209	struct prefix_rd *prd)
128ea8ab	210	{
d62a17ae	211	return (memcmp(&vpn->prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
128ea8ab	212	}
128ea8ab	213
d62a17ae	214	static inline int is_import_rt_configured(struct bgpevpn *vpn)
128ea8ab	215	{
d62a17ae	216	return (CHECK_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD));
128ea8ab	217	}
128ea8ab	218
d62a17ae	219	static inline int is_export_rt_configured(struct bgpevpn *vpn)
128ea8ab	220	{
d62a17ae	221	return (CHECK_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD));
128ea8ab	222	}
128ea8ab	223
d62a17ae	224	static inline int is_vni_param_configured(struct bgpevpn *vpn)
128ea8ab	225	{
d62a17ae	226	return (is_rd_configured(vpn) \|\| is_import_rt_configured(vpn)
d62a17ae	227	\|\| is_export_rt_configured(vpn));
128ea8ab	228	}
128ea8ab	229
bc59a672 MK	230	static inline void encode_rmac_extcomm(struct ecommunity_val *eval,
	231	struct ethaddr *rmac)
	232	{
	233	memset(eval, 0, sizeof(*eval));
	234	eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
	235	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC;
	236	memcpy(&eval->val[2], rmac, ETH_ALEN);
	237	}
	238
ead40654 MK	239	static inline void encode_default_gw_extcomm(struct ecommunity_val *eval)
	240	{
	241	memset(eval, 0, sizeof(*eval));
	242	eval->val[0] = ECOMMUNITY_ENCODE_OPAQUE;
	243	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_DEF_GW;
	244	}
	245
d62a17ae	246	static inline void encode_mac_mobility_extcomm(int static_mac, u_int32_t seq,
d62a17ae	247	struct ecommunity_val *eval)
128ea8ab	248	{
d62a17ae	249	memset(eval, 0, sizeof(*eval));
	250	eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
	251	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY;
	252	if (static_mac)
	253	eval->val[2] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY_FLAG_STICKY;
	254	eval->val[4] = (seq >> 24) & 0xff;
	255	eval->val[5] = (seq >> 16) & 0xff;
	256	eval->val[6] = (seq >> 8) & 0xff;
	257	eval->val[7] = seq & 0xff;
128ea8ab	258	}
128ea8ab	259
90264d64 MK	260	static inline void ip_prefix_from_type5_prefix(struct prefix_evpn *evp,
	261	struct prefix *ip)
	262	{
	263	memset(ip, 0, sizeof(struct prefix));
	264	if (IS_EVPN_PREFIX_IPADDR_V4(evp)) {
	265	ip->family = AF_INET;
	266	ip->prefixlen = evp->prefix.ip_prefix_length;
	267	memcpy(&(ip->u.prefix4),
	268	&(evp->prefix.ip.ip),
	269	IPV4_MAX_BYTELEN);
	270	} else if (IS_EVPN_PREFIX_IPADDR_V6(evp)) {
	271	ip->family = AF_INET6;
	272	ip->prefixlen = evp->prefix.ip_prefix_length;
	273	memcpy(&(ip->u.prefix6),
	274	&(evp->prefix.ip.ip),
	275	IPV6_MAX_BYTELEN);
	276	}
	277	}
	278
d3135ba3	279	static inline void ip_prefix_from_type2_prefix(struct prefix_evpn *evp,
	280	struct prefix *ip)
	281	{
	282	memset(ip, 0, sizeof(struct prefix));
	283	if (IS_EVPN_PREFIX_IPADDR_V4(evp)) {
	284	ip->family = AF_INET;
	285	ip->prefixlen = IPV4_MAX_BITLEN;
	286	memcpy(&(ip->u.prefix4),
	287	&(evp->prefix.ip.ip),
	288	IPV4_MAX_BYTELEN);
	289	} else if (IS_EVPN_PREFIX_IPADDR_V6(evp)) {
	290	ip->family = AF_INET6;
	291	ip->prefixlen = IPV6_MAX_BITLEN;
	292	memcpy(&(ip->u.prefix6),
	293	&(evp->prefix.ip.ip),
	294	IPV6_MAX_BYTELEN);
	295	}
	296	}
	297
d62a17ae	298	static inline void build_evpn_type2_prefix(struct prefix_evpn *p,
	299	struct ethaddr *mac,
	300	struct ipaddr *ip)
128ea8ab	301	{
d62a17ae	302	memset(p, 0, sizeof(struct prefix_evpn));
b03b8898	303	p->family = AF_EVPN;
d62a17ae	304	p->prefixlen = EVPN_TYPE_2_ROUTE_PREFIXLEN;
d62a17ae	305	p->prefix.route_type = BGP_EVPN_MAC_IP_ROUTE;
28328ea9	306	memcpy(&p->prefix.mac.octet, mac->octet, ETH_ALEN);
d62a17ae	307	p->prefix.ip.ipa_type = IPADDR_NONE;
	308	if (ip)
	309	memcpy(&p->prefix.ip, ip, sizeof(*ip));
128ea8ab	310	}
128ea8ab	311
342dd0c6	312	static inline void build_type5_prefix_from_ip_prefix(struct prefix_evpn *evp,
	313	struct prefix *ip_prefix)
	314	{
	315	struct ipaddr ip;
	316
	317	memset(&ip, 0, sizeof(struct ipaddr));
	318	if (ip_prefix->family == AF_INET) {
	319	ip.ipa_type = IPADDR_V4;
	320	memcpy(&ip.ipaddr_v4, &ip_prefix->u.prefix4,
	321	sizeof(struct in_addr));
	322	} else {
	323	ip.ipa_type = IPADDR_V6;
	324	memcpy(&ip.ipaddr_v6, &ip_prefix->u.prefix6,
	325	sizeof(struct in6_addr));
	326	}
	327
	328	memset(evp, 0, sizeof(struct prefix_evpn));
	329	evp->family = AF_EVPN;
	330	evp->prefixlen = EVPN_TYPE_5_ROUTE_PREFIXLEN;
	331	evp->prefix.ip_prefix_length = ip_prefix->prefixlen;
	332	evp->prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE;
	333	evp->prefix.ip.ipa_type = ip.ipa_type;
	334	memcpy(&evp->prefix.ip, &ip, sizeof(struct ipaddr));
	335	}
	336
d62a17ae	337	static inline void build_evpn_type3_prefix(struct prefix_evpn *p,
d62a17ae	338	struct in_addr originator_ip)
128ea8ab	339	{
d62a17ae	340	memset(p, 0, sizeof(struct prefix_evpn));
b03b8898	341	p->family = AF_EVPN;
d62a17ae	342	p->prefixlen = EVPN_TYPE_3_ROUTE_PREFIXLEN;
	343	p->prefix.route_type = BGP_EVPN_IMET_ROUTE;
	344	p->prefix.ip.ipa_type = IPADDR_V4;
	345	p->prefix.ip.ipaddr_v4 = originator_ip;
128ea8ab	346	}
128ea8ab	347
06d2e8f3 MK	348	static inline int advertise_type5_routes(struct bgp *bgp_vrf,
	349	afi_t afi)
	350	{
	351	if (!bgp_vrf->l3vni)
	352	return 0;
	353
	354	if (afi == AFI_IP &&
	355	CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_ADVERTISE_IPV4_IN_EVPN))
	356	return 1;
	357
	358	if (afi == AFI_IP6 &&
	359	CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_ADVERTISE_IPV6_IN_EVPN))
	360	return 1;
	361
	362	return 0;
	363	}
	364
c581d8b0	365	extern void evpn_rt_delete_auto(struct bgp, vni_t, struct list);
523cafc4	366	extern void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf,
	367	struct ecommunity *ecomadd);
	368	extern void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf,
	369	struct ecommunity *ecomdel);
	370	extern void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf,
	371	struct ecommunity *ecomadd);
	372	extern void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf,
	373	struct ecommunity *ecomdel);
d62a17ae	374	extern int bgp_evpn_handle_export_rt_change(struct bgp *bgp,
d62a17ae	375	struct bgpevpn *vpn);
676f83b9	376	extern void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw);
d62a17ae	377	extern void bgp_evpn_handle_rd_change(struct bgp bgp, struct bgpevpn vpn,
	378	int withdraw);
	379	extern int bgp_evpn_install_routes(struct bgp bgp, struct bgpevpn vpn);
	380	extern int bgp_evpn_uninstall_routes(struct bgp bgp, struct bgpevpn vpn);
523cafc4	381	extern void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf);
523cafc4	382	extern void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf);
d62a17ae	383	extern void bgp_evpn_map_vni_to_its_rts(struct bgp bgp, struct bgpevpn vpn);
	384	extern void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp,
	385	struct bgpevpn *vpn);
	386	extern void bgp_evpn_derive_auto_rt_import(struct bgp *bgp,
	387	struct bgpevpn *vpn);
	388	extern void bgp_evpn_derive_auto_rt_export(struct bgp *bgp,
	389	struct bgpevpn *vpn);
	390	extern void bgp_evpn_derive_auto_rd(struct bgp bgp, struct bgpevpn vpn);
676f83b9	391	extern void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp);
d62a17ae	392	extern struct bgpevpn bgp_evpn_lookup_vni(struct bgp bgp, vni_t vni);
d62a17ae	393	extern struct bgpevpn bgp_evpn_new(struct bgp bgp, vni_t vni,
29c53922 MK	394	struct in_addr originator_ip,
29c53922 MK	395	vrf_id_t tenant_vrf_id);
d62a17ae	396	extern void bgp_evpn_free(struct bgp bgp, struct bgpevpn vpn);
a4168ebc	397	#endif /* _BGP_EVPN_PRIVATE_H */