[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_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;
	uint32_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 */
#define VNI_FLAG_USE_TWO_LABELS    0x20 /* Attach both L2-VNI and L3-VNI if
					   needed for this VPN */

	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*/
	uint8_t advertise_gw_macip;

	/* Flag to indicate if we are
	 * advertising subnet for this VNI */
	uint8_t advertise_subnet;

	/* Id for deriving the RD
	 * automatically for this VNI */
	uint16_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)

struct evpnes {

	/* Ethernet Segment Identifier */
	esi_t esi;

	/* es flags */
	uint16_t flags;
#define EVPNES_LOCAL	0x01
#define EVPNES_REMOTE	0x02

	/*
	 * Id for deriving the RD
	 * automatically for this ESI
	 */
	uint16_t rd_id;

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

	/* originator ip address  */
	struct ipaddr originator_ip;

	/* list of VTEPs in the same site */
	struct list *vtep_list;

	/*
	 * Route table for EVPN routes for
	 * this ESI. - type4 routes
	 */
	struct bgp_table *route_table;

	QOBJ_FIELDS
};

DECLARE_QOBJ_TYPE(evpnes)

/* 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;

	UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS);
	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)
		return;

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

	/* check if we are advertising two labels for this vpn */
	if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY))
		SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS);
}

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_es_rt_extcomm(struct ecommunity_val *eval,
					struct ethaddr *mac)
{
	memset(eval, 0, sizeof(struct ecommunity_val));
	eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ES_IMPORT_RT;
	memcpy(&eval->val[2], mac, ETH_ALEN);
}

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, uint32_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 encode_na_flag_extcomm(struct ecommunity_val *eval,
					  uint8_t na_flag)
{
	memset(eval, 0, sizeof(*eval));
	eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ND;
	if (na_flag)
		eval->val[2] |= ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG;
}

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.prefix_addr.ip_prefix_length;
		memcpy(&(ip->u.prefix4), &(evp->prefix.prefix_addr.ip.ip),
		       IPV4_MAX_BYTELEN);
	} else if (is_evpn_prefix_ipaddr_v6(evp)) {
		ip->family = AF_INET6;
		ip->prefixlen = evp->prefix.prefix_addr.ip_prefix_length;
		memcpy(&(ip->u.prefix6), &(evp->prefix.prefix_addr.ip.ip),
		       IPV6_MAX_BYTELEN);
	}
}

static inline int is_evpn_prefix_default(const struct prefix *evp)
{
	if (evp->family != AF_EVPN)
		return 0;

	return ((evp->u.prefix_evpn.prefix_addr.ip_prefix_length  == 0) ?
		1 : 0);
}

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.macip_addr.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.macip_addr.ip.ip),
		       IPV6_MAX_BYTELEN);
	}
}

static inline void ip_prefix_from_evpn_prefix(struct prefix_evpn *evp,
					      struct prefix *ip)
{
	if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)
		ip_prefix_from_type2_prefix(evp, ip);
	else if (evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)
		ip_prefix_from_type5_prefix(evp, ip);
}

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_ROUTE_PREFIXLEN;
	p->prefix.route_type = BGP_EVPN_MAC_IP_ROUTE;
	memcpy(&p->prefix.macip_addr.mac.octet, mac->octet, ETH_ALEN);
	p->prefix.macip_addr.ip.ipa_type = IPADDR_NONE;
	if (ip)
		memcpy(&p->prefix.macip_addr.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_ROUTE_PREFIXLEN;
	evp->prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE;
	evp->prefix.prefix_addr.ip_prefix_length = ip_prefix->prefixlen;
	evp->prefix.prefix_addr.ip.ipa_type = ip.ipa_type;
	memcpy(&evp->prefix.prefix_addr.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_ROUTE_PREFIXLEN;
	p->prefix.route_type = BGP_EVPN_IMET_ROUTE;
	p->prefix.imet_addr.ip.ipa_type = IPADDR_V4;
	p->prefix.imet_addr.ip.ipaddr_v4 = originator_ip;
}

static inline void build_evpn_type4_prefix(struct prefix_evpn *p,
					   esi_t *esi,
					   struct in_addr originator_ip)
{
	memset(p, 0, sizeof(struct prefix_evpn));
	p->family = AF_EVPN;
	p->prefixlen = EVPN_ROUTE_PREFIXLEN;
	p->prefix.route_type = BGP_EVPN_ES_ROUTE;
	p->prefix.es_addr.ip_prefix_length = IPV4_MAX_BITLEN;
	p->prefix.es_addr.ip.ipa_type = IPADDR_V4;
	p->prefix.es_addr.ip.ipaddr_v4 = originator_ip;
	memcpy(&p->prefix.es_addr.esi, esi, sizeof(esi_t));
}

static inline int evpn_default_originate_set(struct bgp *bgp, afi_t afi,
					     safi_t safi)
{
	if (afi == AFI_IP &&
	    CHECK_FLAG(bgp->af_flags[AFI_L2VPN][SAFI_EVPN],
		       BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4))
		return 1;
	else if (afi == AFI_IP6 &&
		 CHECK_FLAG(bgp->af_flags[AFI_L2VPN][SAFI_EVPN],
			    BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6))
		return 1;
	return 0;
}

static inline void es_get_system_mac(esi_t *esi,
				     struct ethaddr *mac)
{
	/*
	 * for type-1 and type-3 ESIs,
	 * the system mac starts at val[1]
	 */
	memcpy(mac, &esi->val[1], ETH_ALEN);
}

static inline int is_es_local(struct evpnes *es)
{
	return CHECK_FLAG(es->flags, EVPNES_LOCAL) ? 1 : 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_autort_change(struct bgp *bgp);
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);
extern struct evpnes *bgp_evpn_lookup_es(struct bgp *bgp, esi_t *esi);
extern struct evpnes *bgp_evpn_es_new(struct bgp *bgp, esi_t *esi,
				      struct ipaddr *originator_ip);
extern void bgp_evpn_es_free(struct bgp *bgp, struct evpnes *es);
extern bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni);
#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 */
50f74cf1	34	#define EVPN_ROUTE_PREFIXLEN 224
a4168ebc	35
a4168ebc	36	/* EVPN route types. */
d62a17ae	37	typedef enum {
	38	BGP_EVPN_AD_ROUTE = 1, /* Ethernet Auto-Discovery (A-D) route */
	39	BGP_EVPN_MAC_IP_ROUTE, /* MAC/IP Advertisement route */
	40	BGP_EVPN_IMET_ROUTE, /* Inclusive Multicast Ethernet Tag route */
	41	BGP_EVPN_ES_ROUTE, /* Ethernet Segment route */
	42	BGP_EVPN_IP_PREFIX_ROUTE, /* IP Prefix route */
a4168ebc	43	} bgp_evpn_route_type;
	44
	45	/*
	46	* Hash table of EVIs. Right now, the only type of EVI supported is with
	47	* VxLAN encapsulation, hence each EVI corresponds to a L2 VNI.
	48	* The VNIs are not "created" through BGP but through some other interface
	49	* on the system. This table stores VNIs that BGP comes to know as present
	50	* on the system (through interaction with zebra) as well as pre-configured
	51	* VNIs (which need to be defined in the system to become "live").
	52	*/
d62a17ae	53	struct bgpevpn {
d62a17ae	54	vni_t vni;
29c53922	55	vrf_id_t tenant_vrf_id;
d7c0a89a	56	uint32_t flags;
a4168ebc	57	#define VNI_FLAG_CFGD 0x1 /* VNI is user configured */
	58	#define VNI_FLAG_LIVE 0x2 /* VNI is "live" */
	59	#define VNI_FLAG_RD_CFGD 0x4 /* RD is user configured. */
	60	#define VNI_FLAG_IMPRT_CFGD 0x8 /* Import RT is user configured */
	61	#define VNI_FLAG_EXPRT_CFGD 0x10 /* Export RT is user configured */
c48d9f5f MK	62	#define VNI_FLAG_USE_TWO_LABELS 0x20 /* Attach both L2-VNI and L3-VNI if
c48d9f5f MK	63	needed for this VPN */
a4168ebc	64
bc4606bd MK	65	struct bgp bgp_vrf; / back pointer to the vrf instance */
bc4606bd MK	66
996c9314 LB	67	/* Flag to indicate if we are
	68	* advertising the g/w mac ip for
	69	* this VNI*/
d7c0a89a	70	uint8_t advertise_gw_macip;
1a98c087	71
d7c0a89a QY	72	/* Flag to indicate if we are
	73	* advertising subnet for this VNI */
	74	uint8_t advertise_subnet;
31310b25	75
d7c0a89a QY	76	/* Id for deriving the RD
	77	* automatically for this VNI */
	78	uint16_t rd_id;
a4168ebc	79
d7c0a89a QY	80	/* RD for this VNI. */
d7c0a89a QY	81	struct prefix_rd prd;
a4168ebc	82
d7c0a89a QY	83	/* Route type 3 field */
d7c0a89a QY	84	struct in_addr originator_ip;
a4168ebc	85
d7c0a89a QY	86	/* Import and Export RTs. */
	87	struct list *import_rtl;
	88	struct list *export_rtl;
a4168ebc	89
d7c0a89a QY	90	/* Route table for EVPN routes for
	91	* this VNI. */
	92	struct bgp_table *route_table;
a4168ebc	93
d7c0a89a	94	QOBJ_FIELDS
a4168ebc	95	};
	96
	97	DECLARE_QOBJ_TYPE(bgpevpn)
	98
50f74cf1	99	struct evpnes {
	100
	101	/* Ethernet Segment Identifier */
	102	esi_t esi;
	103
	104	/* es flags */
	105	uint16_t flags;
	106	#define EVPNES_LOCAL 0x01
	107	#define EVPNES_REMOTE 0x02
	108
2bb9eff4 DS	109	/*
	110	* Id for deriving the RD
	111	* automatically for this ESI
	112	*/
50f74cf1	113	uint16_t rd_id;
	114
	115	/* RD for this VNI. */
	116	struct prefix_rd prd;
	117
	118	/* originator ip address */
	119	struct ipaddr originator_ip;
	120
	121	/* list of VTEPs in the same site */
	122	struct list *vtep_list;
	123
2bb9eff4 DS	124	/*
	125	* Route table for EVPN routes for
	126	* this ESI. - type4 routes
	127	*/
50f74cf1	128	struct bgp_table *route_table;
	129
	130	QOBJ_FIELDS
	131	};
	132
	133	DECLARE_QOBJ_TYPE(evpnes)
	134
a4168ebc	135	/* Mapping of Import RT to VNIs.
	136	* The Import RTs of all VNIs are maintained in a hash table with each
	137	* RT linking to all VNIs that will import routes matching this RT.
	138	*/
d62a17ae	139	struct irt_node {
	140	/* RT */
	141	struct ecommunity_val rt;
a4168ebc	142
d62a17ae	143	/* List of VNIs importing routes matching this RT. */
d62a17ae	144	struct list *vnis;
a4168ebc	145	};
a4168ebc	146
10ebe1ab MK	147	/* Mapping of Import RT to VRFs.
	148	* The Import RTs of all VRFss are maintained in a hash table with each
	149	* RT linking to all VRFs that will import routes matching this RT.
	150	*/
	151	struct vrf_irt_node {
	152	/* RT */
	153	struct ecommunity_val rt;
	154
	155	/* List of VNIs importing routes matching this RT. */
	156	struct list *vrfs;
	157	};
	158
	159
128ea8ab	160	#define RT_TYPE_IMPORT 1
	161	#define RT_TYPE_EXPORT 2
	162	#define RT_TYPE_BOTH 3
	163
676f83b9	164	static inline int is_vrf_rd_configured(struct bgp *bgp_vrf)
676f83b9	165	{
996c9314	166	return (CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_RD_CFGD));
676f83b9	167	}
	168
	169	static inline int bgp_evpn_vrf_rd_matches_existing(struct bgp *bgp_vrf,
	170	struct prefix_rd *prd)
	171	{
	172	return (memcmp(&bgp_vrf->vrf_prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
	173	}
	174
6d8c58b7 MK	175	static inline vni_t bgpevpn_get_l3vni(struct bgpevpn *vpn)
6d8c58b7 MK	176	{
bc4606bd	177	return vpn->bgp_vrf ? vpn->bgp_vrf->l3vni : 0;
6d8c58b7 MK	178	}
	179
	180	static inline void bgpevpn_get_rmac(struct bgpevpn vpn, struct ethaddr rmac)
	181	{
6d8c58b7	182	memset(rmac, 0, sizeof(struct ethaddr));
bc4606bd	183	if (!vpn->bgp_vrf)
6d8c58b7	184	return;
bc4606bd	185	memcpy(rmac, &vpn->bgp_vrf->rmac, sizeof(struct ethaddr));
6d8c58b7 MK	186	}
	187
	188	static inline struct list bgpevpn_get_vrf_export_rtl(struct bgpevpn vpn)
	189	{
bc4606bd	190	if (!vpn->bgp_vrf)
6d8c58b7 MK	191	return NULL;
6d8c58b7 MK	192
bc4606bd	193	return vpn->bgp_vrf->vrf_export_rtl;
6d8c58b7 MK	194	}
	195
	196	static inline struct list bgpevpn_get_vrf_import_rtl(struct bgpevpn vpn)
	197	{
bc4606bd	198	if (!vpn->bgp_vrf)
6d8c58b7 MK	199	return NULL;
6d8c58b7 MK	200
bc4606bd	201	return vpn->bgp_vrf->vrf_import_rtl;
6d8c58b7 MK	202	}
6d8c58b7 MK	203
6a8657d0 MK	204	static inline void bgpevpn_unlink_from_l3vni(struct bgpevpn *vpn)
6a8657d0 MK	205	{
bc4606bd MK	206	/* bail if vpn is not associated to bgp_vrf */
bc4606bd MK	207	if (!vpn->bgp_vrf)
6a8657d0	208	return;
996c9314	209
c48d9f5f	210	UNSET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS);
bc4606bd	211	listnode_delete(vpn->bgp_vrf->l2vnis, vpn);
996c9314	212
bc4606bd MK	213	/* remove the backpointer to the vrf instance */
bc4606bd MK	214	vpn->bgp_vrf = NULL;
6a8657d0 MK	215	}
	216
	217	static inline void bgpevpn_link_to_l3vni(struct bgpevpn *vpn)
	218	{
	219	struct bgp *bgp_vrf = NULL;
	220
bc4606bd MK	221	/* bail if vpn is already associated to vrf */
	222	if (vpn->bgp_vrf)
	223	return;
	224
6a8657d0	225	bgp_vrf = bgp_lookup_by_vrf_id(vpn->tenant_vrf_id);
c48d9f5f	226	if (!bgp_vrf)
6a8657d0	227	return;
c48d9f5f	228
bc4606bd MK	229	/* associate the vpn to the bgp_vrf instance */
bc4606bd MK	230	vpn->bgp_vrf = bgp_vrf;
6a8657d0	231	listnode_add_sort(bgp_vrf->l2vnis, vpn);
83ea2eb0	232
c48d9f5f	233	/* check if we are advertising two labels for this vpn */
996c9314	234	if (!CHECK_FLAG(bgp_vrf->vrf_flags, BGP_VRF_L3VNI_PREFIX_ROUTES_ONLY))
c48d9f5f	235	SET_FLAG(vpn->flags, VNI_FLAG_USE_TWO_LABELS);
6a8657d0 MK	236	}
6a8657d0 MK	237
d62a17ae	238	static inline int is_vni_configured(struct bgpevpn *vpn)
128ea8ab	239	{
d62a17ae	240	return (CHECK_FLAG(vpn->flags, VNI_FLAG_CFGD));
128ea8ab	241	}
128ea8ab	242
d62a17ae	243	static inline int is_vni_live(struct bgpevpn *vpn)
128ea8ab	244	{
d62a17ae	245	return (CHECK_FLAG(vpn->flags, VNI_FLAG_LIVE));
128ea8ab	246	}
128ea8ab	247
d62a17ae	248	static inline int is_rd_configured(struct bgpevpn *vpn)
128ea8ab	249	{
d62a17ae	250	return (CHECK_FLAG(vpn->flags, VNI_FLAG_RD_CFGD));
128ea8ab	251	}
128ea8ab	252
d62a17ae	253	static inline int bgp_evpn_rd_matches_existing(struct bgpevpn *vpn,
d62a17ae	254	struct prefix_rd *prd)
128ea8ab	255	{
d62a17ae	256	return (memcmp(&vpn->prd.val, prd->val, ECOMMUNITY_SIZE) == 0);
128ea8ab	257	}
128ea8ab	258
d62a17ae	259	static inline int is_import_rt_configured(struct bgpevpn *vpn)
128ea8ab	260	{
d62a17ae	261	return (CHECK_FLAG(vpn->flags, VNI_FLAG_IMPRT_CFGD));
128ea8ab	262	}
128ea8ab	263
d62a17ae	264	static inline int is_export_rt_configured(struct bgpevpn *vpn)
128ea8ab	265	{
d62a17ae	266	return (CHECK_FLAG(vpn->flags, VNI_FLAG_EXPRT_CFGD));
128ea8ab	267	}
128ea8ab	268
d62a17ae	269	static inline int is_vni_param_configured(struct bgpevpn *vpn)
128ea8ab	270	{
d62a17ae	271	return (is_rd_configured(vpn) \|\| is_import_rt_configured(vpn)
d62a17ae	272	\|\| is_export_rt_configured(vpn));
128ea8ab	273	}
128ea8ab	274
50f74cf1	275	static inline void encode_es_rt_extcomm(struct ecommunity_val *eval,
	276	struct ethaddr *mac)
	277	{
	278	memset(eval, 0, sizeof(struct ecommunity_val));
	279	eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
	280	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ES_IMPORT_RT;
	281	memcpy(&eval->val[2], mac, ETH_ALEN);
	282	}
	283
bc59a672 MK	284	static inline void encode_rmac_extcomm(struct ecommunity_val *eval,
	285	struct ethaddr *rmac)
	286	{
	287	memset(eval, 0, sizeof(*eval));
	288	eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
	289	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ROUTERMAC;
	290	memcpy(&eval->val[2], rmac, ETH_ALEN);
	291	}
	292
ead40654 MK	293	static inline void encode_default_gw_extcomm(struct ecommunity_val *eval)
	294	{
	295	memset(eval, 0, sizeof(*eval));
	296	eval->val[0] = ECOMMUNITY_ENCODE_OPAQUE;
	297	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_DEF_GW;
	298	}
	299
d7c0a89a	300	static inline void encode_mac_mobility_extcomm(int static_mac, uint32_t seq,
d62a17ae	301	struct ecommunity_val *eval)
128ea8ab	302	{
d62a17ae	303	memset(eval, 0, sizeof(*eval));
	304	eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
	305	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY;
	306	if (static_mac)
	307	eval->val[2] = ECOMMUNITY_EVPN_SUBTYPE_MACMOBILITY_FLAG_STICKY;
	308	eval->val[4] = (seq >> 24) & 0xff;
	309	eval->val[5] = (seq >> 16) & 0xff;
	310	eval->val[6] = (seq >> 8) & 0xff;
	311	eval->val[7] = seq & 0xff;
128ea8ab	312	}
128ea8ab	313
68e33151 CS	314	static inline void encode_na_flag_extcomm(struct ecommunity_val *eval,
	315	uint8_t na_flag)
	316	{
	317	memset(eval, 0, sizeof(*eval));
	318	eval->val[0] = ECOMMUNITY_ENCODE_EVPN;
	319	eval->val[1] = ECOMMUNITY_EVPN_SUBTYPE_ND;
	320	if (na_flag)
	321	eval->val[2] \|= ECOMMUNITY_EVPN_SUBTYPE_ND_ROUTER_FLAG;
	322	}
	323
90264d64 MK	324	static inline void ip_prefix_from_type5_prefix(struct prefix_evpn *evp,
	325	struct prefix *ip)
	326	{
	327	memset(ip, 0, sizeof(struct prefix));
3714a385	328	if (is_evpn_prefix_ipaddr_v4(evp)) {
90264d64	329	ip->family = AF_INET;
3714a385	330	ip->prefixlen = evp->prefix.prefix_addr.ip_prefix_length;
3714a385	331	memcpy(&(ip->u.prefix4), &(evp->prefix.prefix_addr.ip.ip),
90264d64	332	IPV4_MAX_BYTELEN);
3714a385	333	} else if (is_evpn_prefix_ipaddr_v6(evp)) {
90264d64	334	ip->family = AF_INET6;
3714a385	335	ip->prefixlen = evp->prefix.prefix_addr.ip_prefix_length;
3714a385	336	memcpy(&(ip->u.prefix6), &(evp->prefix.prefix_addr.ip.ip),
90264d64 MK	337	IPV6_MAX_BYTELEN);
	338	}
	339	}
	340
123214ef	341	static inline int is_evpn_prefix_default(const struct prefix *evp)
6fb219da MK	342	{
	343	if (evp->family != AF_EVPN)
	344	return 0;
	345
3714a385	346	return ((evp->u.prefix_evpn.prefix_addr.ip_prefix_length == 0) ?
3714a385	347	1 : 0);
6fb219da MK	348	}
6fb219da MK	349
d3135ba3	350	static inline void ip_prefix_from_type2_prefix(struct prefix_evpn *evp,
	351	struct prefix *ip)
	352	{
	353	memset(ip, 0, sizeof(struct prefix));
3714a385	354	if (is_evpn_prefix_ipaddr_v4(evp)) {
d3135ba3	355	ip->family = AF_INET;
d3135ba3	356	ip->prefixlen = IPV4_MAX_BITLEN;
3714a385	357	memcpy(&(ip->u.prefix4), &(evp->prefix.macip_addr.ip.ip),
d3135ba3	358	IPV4_MAX_BYTELEN);
3714a385	359	} else if (is_evpn_prefix_ipaddr_v6(evp)) {
d3135ba3	360	ip->family = AF_INET6;
d3135ba3	361	ip->prefixlen = IPV6_MAX_BITLEN;
3714a385	362	memcpy(&(ip->u.prefix6), &(evp->prefix.macip_addr.ip.ip),
d3135ba3	363	IPV6_MAX_BYTELEN);
	364	}
	365	}
	366
3714a385	367	static inline void ip_prefix_from_evpn_prefix(struct prefix_evpn *evp,
	368	struct prefix *ip)
	369	{
	370	if (evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE)
	371	ip_prefix_from_type2_prefix(evp, ip);
	372	else if (evp->prefix.route_type == BGP_EVPN_IP_PREFIX_ROUTE)
	373	ip_prefix_from_type5_prefix(evp, ip);
	374	}
	375
d62a17ae	376	static inline void build_evpn_type2_prefix(struct prefix_evpn *p,
	377	struct ethaddr *mac,
	378	struct ipaddr *ip)
128ea8ab	379	{
d62a17ae	380	memset(p, 0, sizeof(struct prefix_evpn));
b03b8898	381	p->family = AF_EVPN;
50f74cf1	382	p->prefixlen = EVPN_ROUTE_PREFIXLEN;
d62a17ae	383	p->prefix.route_type = BGP_EVPN_MAC_IP_ROUTE;
3714a385	384	memcpy(&p->prefix.macip_addr.mac.octet, mac->octet, ETH_ALEN);
3714a385	385	p->prefix.macip_addr.ip.ipa_type = IPADDR_NONE;
d62a17ae	386	if (ip)
3714a385	387	memcpy(&p->prefix.macip_addr.ip, ip, sizeof(*ip));
128ea8ab	388	}
128ea8ab	389
342dd0c6	390	static inline void build_type5_prefix_from_ip_prefix(struct prefix_evpn *evp,
	391	struct prefix *ip_prefix)
	392	{
	393	struct ipaddr ip;
	394
	395	memset(&ip, 0, sizeof(struct ipaddr));
	396	if (ip_prefix->family == AF_INET) {
	397	ip.ipa_type = IPADDR_V4;
	398	memcpy(&ip.ipaddr_v4, &ip_prefix->u.prefix4,
	399	sizeof(struct in_addr));
	400	} else {
	401	ip.ipa_type = IPADDR_V6;
	402	memcpy(&ip.ipaddr_v6, &ip_prefix->u.prefix6,
	403	sizeof(struct in6_addr));
	404	}
	405
	406	memset(evp, 0, sizeof(struct prefix_evpn));
	407	evp->family = AF_EVPN;
50f74cf1	408	evp->prefixlen = EVPN_ROUTE_PREFIXLEN;
342dd0c6	409	evp->prefix.route_type = BGP_EVPN_IP_PREFIX_ROUTE;
3714a385	410	evp->prefix.prefix_addr.ip_prefix_length = ip_prefix->prefixlen;
	411	evp->prefix.prefix_addr.ip.ipa_type = ip.ipa_type;
	412	memcpy(&evp->prefix.prefix_addr.ip, &ip, sizeof(struct ipaddr));
342dd0c6	413	}
342dd0c6	414
d62a17ae	415	static inline void build_evpn_type3_prefix(struct prefix_evpn *p,
d62a17ae	416	struct in_addr originator_ip)
128ea8ab	417	{
d62a17ae	418	memset(p, 0, sizeof(struct prefix_evpn));
b03b8898	419	p->family = AF_EVPN;
50f74cf1	420	p->prefixlen = EVPN_ROUTE_PREFIXLEN;
d62a17ae	421	p->prefix.route_type = BGP_EVPN_IMET_ROUTE;
3714a385	422	p->prefix.imet_addr.ip.ipa_type = IPADDR_V4;
3714a385	423	p->prefix.imet_addr.ip.ipaddr_v4 = originator_ip;
128ea8ab	424	}
128ea8ab	425
50f74cf1	426	static inline void build_evpn_type4_prefix(struct prefix_evpn *p,
	427	esi_t *esi,
	428	struct in_addr originator_ip)
	429	{
	430	memset(p, 0, sizeof(struct prefix_evpn));
	431	p->family = AF_EVPN;
	432	p->prefixlen = EVPN_ROUTE_PREFIXLEN;
	433	p->prefix.route_type = BGP_EVPN_ES_ROUTE;
	434	p->prefix.es_addr.ip_prefix_length = IPV4_MAX_BITLEN;
	435	p->prefix.es_addr.ip.ipa_type = IPADDR_V4;
	436	p->prefix.es_addr.ip.ipaddr_v4 = originator_ip;
	437	memcpy(&p->prefix.es_addr.esi, esi, sizeof(esi_t));
	438	}
	439
486456ca MK	440	static inline int evpn_default_originate_set(struct bgp *bgp, afi_t afi,
	441	safi_t safi)
	442	{
	443	if (afi == AFI_IP &&
	444	CHECK_FLAG(bgp->af_flags[AFI_L2VPN][SAFI_EVPN],
	445	BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV4))
	446	return 1;
	447	else if (afi == AFI_IP6 &&
	448	CHECK_FLAG(bgp->af_flags[AFI_L2VPN][SAFI_EVPN],
	449	BGP_L2VPN_EVPN_DEFAULT_ORIGINATE_IPV6))
	450	return 1;
	451	return 0;
	452	}
	453
50f74cf1	454	static inline void es_get_system_mac(esi_t *esi,
	455	struct ethaddr *mac)
	456	{
2bb9eff4 DS	457	/*
	458	* for type-1 and type-3 ESIs,
	459	* the system mac starts at val[1]
50f74cf1	460	*/
	461	memcpy(mac, &esi->val[1], ETH_ALEN);
	462	}
	463
	464	static inline int is_es_local(struct evpnes *es)
	465	{
	466	return CHECK_FLAG(es->flags, EVPNES_LOCAL) ? 1 : 0;
	467	}
	468
996c9314	469	extern void evpn_rt_delete_auto(struct bgp , vni_t, struct list );
523cafc4	470	extern void bgp_evpn_configure_export_rt_for_vrf(struct bgp *bgp_vrf,
	471	struct ecommunity *ecomadd);
	472	extern void bgp_evpn_unconfigure_export_rt_for_vrf(struct bgp *bgp_vrf,
	473	struct ecommunity *ecomdel);
	474	extern void bgp_evpn_configure_import_rt_for_vrf(struct bgp *bgp_vrf,
	475	struct ecommunity *ecomadd);
	476	extern void bgp_evpn_unconfigure_import_rt_for_vrf(struct bgp *bgp_vrf,
	477	struct ecommunity *ecomdel);
d62a17ae	478	extern int bgp_evpn_handle_export_rt_change(struct bgp *bgp,
d62a17ae	479	struct bgpevpn *vpn);
bf1061d8	480	extern void bgp_evpn_handle_autort_change(struct bgp *bgp);
676f83b9	481	extern void bgp_evpn_handle_vrf_rd_change(struct bgp *bgp_vrf, int withdraw);
d62a17ae	482	extern void bgp_evpn_handle_rd_change(struct bgp bgp, struct bgpevpn vpn,
	483	int withdraw);
	484	extern int bgp_evpn_install_routes(struct bgp bgp, struct bgpevpn vpn);
	485	extern int bgp_evpn_uninstall_routes(struct bgp bgp, struct bgpevpn vpn);
523cafc4	486	extern void bgp_evpn_map_vrf_to_its_rts(struct bgp *bgp_vrf);
523cafc4	487	extern void bgp_evpn_unmap_vrf_from_its_rts(struct bgp *bgp_vrf);
d62a17ae	488	extern void bgp_evpn_map_vni_to_its_rts(struct bgp bgp, struct bgpevpn vpn);
	489	extern void bgp_evpn_unmap_vni_from_its_rts(struct bgp *bgp,
	490	struct bgpevpn *vpn);
	491	extern void bgp_evpn_derive_auto_rt_import(struct bgp *bgp,
	492	struct bgpevpn *vpn);
	493	extern void bgp_evpn_derive_auto_rt_export(struct bgp *bgp,
	494	struct bgpevpn *vpn);
	495	extern void bgp_evpn_derive_auto_rd(struct bgp bgp, struct bgpevpn vpn);
676f83b9	496	extern void bgp_evpn_derive_auto_rd_for_vrf(struct bgp *bgp);
d62a17ae	497	extern struct bgpevpn bgp_evpn_lookup_vni(struct bgp bgp, vni_t vni);
d62a17ae	498	extern struct bgpevpn bgp_evpn_new(struct bgp bgp, vni_t vni,
29c53922 MK	499	struct in_addr originator_ip,
29c53922 MK	500	vrf_id_t tenant_vrf_id);
d62a17ae	501	extern void bgp_evpn_free(struct bgp bgp, struct bgpevpn vpn);
50f74cf1	502	extern struct evpnes bgp_evpn_lookup_es(struct bgp bgp, esi_t *esi);
	503	extern struct evpnes bgp_evpn_es_new(struct bgp bgp, esi_t *esi,
	504	struct ipaddr *originator_ip);
	505	extern void bgp_evpn_es_free(struct bgp bgp, struct evpnes es);
7df407ed	506	extern bool bgp_evpn_lookup_l3vni_l2vni_table(vni_t vni);
a4168ebc	507	#endif /* _BGP_EVPN_PRIVATE_H */