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/*
* Copyright 2015, LabN Consulting, L.L.C.
*
* This program 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
* of the License, or (at your option) any later version.
*
* This program 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_ENCAP_TYPES_H
#define _QUAGGA_BGP_ENCAP_TYPES_H
#include "bgpd/bgp_ecommunity.h"
/* from
* http://www.iana.org/assignments/bgp-parameters/bgp-parameters.xhtml#tunnel-types
*/
typedef enum {
BGP_ENCAP_TYPE_RESERVED = 0,
BGP_ENCAP_TYPE_L2TPV3_OVER_IP = 1,
BGP_ENCAP_TYPE_GRE = 2,
BGP_ENCAP_TYPE_TRANSMIT_TUNNEL_ENDPOINT = 3,
BGP_ENCAP_TYPE_IPSEC_IN_TUNNEL_MODE = 4,
BGP_ENCAP_TYPE_IP_IN_IP_TUNNEL_WITH_IPSEC_TRANSPORT_MODE = 5,
BGP_ENCAP_TYPE_MPLS_IN_IP_TUNNEL_WITH_IPSEC_TRANSPORT_MODE = 6,
BGP_ENCAP_TYPE_IP_IN_IP = 7,
BGP_ENCAP_TYPE_VXLAN = 8,
BGP_ENCAP_TYPE_NVGRE = 9,
BGP_ENCAP_TYPE_MPLS = 10, /* NOTE: Encap SAFI&Attribute not used */
BGP_ENCAP_TYPE_MPLS_IN_GRE = 11,
BGP_ENCAP_TYPE_VXLAN_GPE = 12,
BGP_ENCAP_TYPE_MPLS_IN_UDP = 13,
BGP_ENCAP_TYPE_PBB
} bgp_encap_types;
typedef enum {
BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION = 1,
BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE = 2,
BGP_ENCAP_SUBTLV_TYPE_IPSEC_TA = 3,
BGP_ENCAP_SUBTLV_TYPE_COLOR = 4,
BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT =
6 /* speculative, IANA assignment TBD */
} bgp_encap_subtlv_types;
/*
* Tunnel Encapsulation Attribute subtlvs
*/
struct bgp_tea_subtlv_encap_l2tpv3_over_ip {
uint32_t sessionid;
uint8_t cookie_length;
uint8_t cookie[8];
};
struct bgp_tea_subtlv_encap_gre_key {
uint32_t gre_key;
};
struct bgp_tea_subtlv_encap_pbb {
uint32_t flag_isid : 1;
uint32_t flag_vid : 1;
uint32_t isid : 24;
uint16_t vid : 12;
uint8_t macaddr[6];
};
struct bgp_tea_subtlv_proto_type {
uint16_t proto; /* ether-type */
};
struct bgp_tea_subtlv_color {
uint32_t color;
};
/* per draft-rosen-idr-tunnel-encaps */
struct bgp_tea_subtlv_remote_endpoint {
uint8_t family; /* IPv4 or IPv6 */
union {
struct in_addr v4;
struct in6_addr v6;
} ip_address;
as_t as4; /* always 4 bytes */
};
/*
* This is the length of the value part of the ipsec tunnel authenticator
* subtlv. Currently we only support the length for authenticator type 1.
*/
#define BGP_ENCAP_SUBTLV_IPSEC_TA_SIZE 20
struct bgp_tea_subtlv_ipsec_ta {
uint16_t authenticator_type; /* only type 1 is supported so far */
uint8_t authenticator_length; /* octets in value field */
uint8_t value[BGP_ENCAP_SUBTLV_IPSEC_TA_SIZE];
};
/*
* Subtlv valid flags
* TBD change names to add "VALID"
*/
#define BGP_TEA_SUBTLV_ENCAP 0x00000001
#define BGP_TEA_SUBTLV_PROTO_TYPE 0x00000002
#define BGP_TEA_SUBTLV_COLOR 0x00000004
#define BGP_TEA_SUBTLV_IPSEC_TA 0x00000008
#define BGP_TEA_SUBTLV_REMOTE_ENDPOINT 0x00000010
#define CHECK_SUBTLV_FLAG(ptr, flag) CHECK_FLAG((ptr)->valid_subtlvs, (flag))
#define SET_SUBTLV_FLAG(ptr, flag) SET_FLAG((ptr)->valid_subtlvs, (flag))
#define UNSET_SUBTLV_FLAG(ptr, flag) UNSET_FLAG((ptr)->valid_subtlvs, (flag))
/*
* Tunnel Type-specific APIs
*/
struct bgp_encap_type_reserved {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
};
struct bgp_encap_type_l2tpv3_over_ip {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_encap_l2tpv3_over_ip st_encap;
struct bgp_tea_subtlv_proto_type st_proto; /* optional */
struct bgp_tea_subtlv_color st_color; /* optional */
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
};
struct bgp_encap_type_gre {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_encap_gre_key st_encap; /* optional */
struct bgp_tea_subtlv_proto_type st_proto; /* optional */
struct bgp_tea_subtlv_color st_color; /* optional */
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
};
struct bgp_encap_type_ip_in_ip {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_proto_type st_proto; /* optional */
struct bgp_tea_subtlv_color st_color; /* optional */
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
};
struct bgp_encap_type_transmit_tunnel_endpoint {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
/* No subtlvs defined in spec? */
};
struct bgp_encap_type_ipsec_in_tunnel_mode {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_ipsec_ta st_ipsec_ta; /* optional */
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
};
struct bgp_encap_type_ip_in_ip_tunnel_with_ipsec_transport_mode {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_ipsec_ta st_ipsec_ta; /* optional */
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
};
struct bgp_encap_type_mpls_in_ip_tunnel_with_ipsec_transport_mode {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_ipsec_ta st_ipsec_ta; /* optional */
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
};
#define VXLAN_ENCAP_MASK_VNID_VALID 0x80000000
#define VXLAN_ENCAP_MASK_MAC_VALID 0x40000000
struct bgp_encap_type_vxlan {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
/* draft-ietf-idr-tunnel-encaps-02 */
uint32_t vnid; /* does not include V and M bit */
uint8_t *mac_address; /* optional */
};
struct bgp_encap_type_nvgre {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
/* No subtlvs defined in spec? */
};
struct bgp_encap_type_mpls {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
/* No subtlvs defined in spec? */
};
struct bgp_encap_type_mpls_in_gre {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
/* No subtlvs defined in spec? */
};
struct bgp_encap_type_vxlan_gpe {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
/* No subtlvs defined in spec? */
};
struct bgp_encap_type_mpls_in_udp {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
/* No subtlvs defined in spec? */
};
struct bgp_encap_type_pbb {
uint32_t valid_subtlvs;
struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
struct bgp_tea_subtlv_encap_pbb st_encap;
};
static inline void encode_encap_extcomm(bgp_encap_types tnl_type,
struct ecommunity_val *eval)
{
memset(eval, 0, sizeof(*eval));
eval->val[0] = ECOMMUNITY_ENCODE_OPAQUE;
eval->val[1] = ECOMMUNITY_OPAQUE_SUBTYPE_ENCAP;
eval->val[6] = ((tnl_type) >> 8) & 0xff;
eval->val[7] = (tnl_type)&0xff;
}
#endif /* _QUAGGA_BGP_ENCAP_TYPES_H */
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