mirror of https://github.com/FRRouting/frr.git
219 lines
6.2 KiB
C
219 lines
6.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2015, LabN Consulting, L.L.C.
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*/
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#ifndef _QUAGGA_BGP_ENCAP_TYPES_H
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#define _QUAGGA_BGP_ENCAP_TYPES_H
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#include "bgpd/bgp_ecommunity.h"
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/* from
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* http://www.iana.org/assignments/bgp-parameters/bgp-parameters.xhtml#tunnel-types
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*/
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typedef enum {
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BGP_ENCAP_TYPE_RESERVED = 0,
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BGP_ENCAP_TYPE_L2TPV3_OVER_IP = 1,
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BGP_ENCAP_TYPE_GRE = 2,
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BGP_ENCAP_TYPE_TRANSMIT_TUNNEL_ENDPOINT = 3,
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BGP_ENCAP_TYPE_IPSEC_IN_TUNNEL_MODE = 4,
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BGP_ENCAP_TYPE_IP_IN_IP_TUNNEL_WITH_IPSEC_TRANSPORT_MODE = 5,
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BGP_ENCAP_TYPE_MPLS_IN_IP_TUNNEL_WITH_IPSEC_TRANSPORT_MODE = 6,
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BGP_ENCAP_TYPE_IP_IN_IP = 7,
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BGP_ENCAP_TYPE_VXLAN = 8,
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BGP_ENCAP_TYPE_NVGRE = 9,
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BGP_ENCAP_TYPE_MPLS = 10, /* NOTE: Encap SAFI&Attribute not used */
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BGP_ENCAP_TYPE_MPLS_IN_GRE = 11,
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BGP_ENCAP_TYPE_VXLAN_GPE = 12,
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BGP_ENCAP_TYPE_MPLS_IN_UDP = 13,
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BGP_ENCAP_TYPE_PBB
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} bgp_encap_types;
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typedef enum {
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BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION = 1,
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BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE = 2,
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BGP_ENCAP_SUBTLV_TYPE_IPSEC_TA = 3,
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BGP_ENCAP_SUBTLV_TYPE_COLOR = 4,
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BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT =
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6 /* speculative, IANA assignment TBD */
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} bgp_encap_subtlv_types;
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/*
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* Tunnel Encapsulation Attribute subtlvs
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*/
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struct bgp_tea_subtlv_encap_l2tpv3_over_ip {
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uint32_t sessionid;
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uint8_t cookie_length;
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uint8_t cookie[8];
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};
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struct bgp_tea_subtlv_encap_gre_key {
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uint32_t gre_key;
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};
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struct bgp_tea_subtlv_encap_pbb {
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uint32_t flag_isid : 1;
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uint32_t flag_vid : 1;
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uint32_t isid : 24;
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uint16_t vid : 12;
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uint8_t macaddr[6];
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};
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struct bgp_tea_subtlv_proto_type {
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uint16_t proto; /* ether-type */
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};
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struct bgp_tea_subtlv_color {
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uint32_t color;
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};
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/* per draft-rosen-idr-tunnel-encaps */
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struct bgp_tea_subtlv_remote_endpoint {
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uint8_t family; /* IPv4 or IPv6 */
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union {
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struct in_addr v4;
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struct in6_addr v6;
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} ip_address;
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as_t as4; /* always 4 bytes */
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};
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/*
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* This is the length of the value part of the ipsec tunnel authenticator
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* subtlv. Currently we only support the length for authenticator type 1.
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*/
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#define BGP_ENCAP_SUBTLV_IPSEC_TA_SIZE 20
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struct bgp_tea_subtlv_ipsec_ta {
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uint16_t authenticator_type; /* only type 1 is supported so far */
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uint8_t authenticator_length; /* octets in value field */
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uint8_t value[BGP_ENCAP_SUBTLV_IPSEC_TA_SIZE];
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};
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/*
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* Subtlv valid flags
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* TBD change names to add "VALID"
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*/
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#define BGP_TEA_SUBTLV_ENCAP 0x00000001
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#define BGP_TEA_SUBTLV_PROTO_TYPE 0x00000002
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#define BGP_TEA_SUBTLV_COLOR 0x00000004
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#define BGP_TEA_SUBTLV_IPSEC_TA 0x00000008
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#define BGP_TEA_SUBTLV_REMOTE_ENDPOINT 0x00000010
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#define CHECK_SUBTLV_FLAG(ptr, flag) CHECK_FLAG((ptr)->valid_subtlvs, (flag))
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#define SET_SUBTLV_FLAG(ptr, flag) SET_FLAG((ptr)->valid_subtlvs, (flag))
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#define UNSET_SUBTLV_FLAG(ptr, flag) UNSET_FLAG((ptr)->valid_subtlvs, (flag))
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/*
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* Tunnel Type-specific APIs
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*/
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struct bgp_encap_type_reserved {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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};
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struct bgp_encap_type_l2tpv3_over_ip {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_encap_l2tpv3_over_ip st_encap;
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struct bgp_tea_subtlv_proto_type st_proto; /* optional */
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struct bgp_tea_subtlv_color st_color; /* optional */
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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};
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struct bgp_encap_type_gre {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_encap_gre_key st_encap; /* optional */
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struct bgp_tea_subtlv_proto_type st_proto; /* optional */
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struct bgp_tea_subtlv_color st_color; /* optional */
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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};
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struct bgp_encap_type_ip_in_ip {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_proto_type st_proto; /* optional */
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struct bgp_tea_subtlv_color st_color; /* optional */
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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};
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struct bgp_encap_type_transmit_tunnel_endpoint {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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/* No subtlvs defined in spec? */
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};
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struct bgp_encap_type_ipsec_in_tunnel_mode {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_ipsec_ta st_ipsec_ta; /* optional */
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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};
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struct bgp_encap_type_ip_in_ip_tunnel_with_ipsec_transport_mode {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_ipsec_ta st_ipsec_ta; /* optional */
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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};
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struct bgp_encap_type_mpls_in_ip_tunnel_with_ipsec_transport_mode {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_ipsec_ta st_ipsec_ta; /* optional */
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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};
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#define VXLAN_ENCAP_MASK_VNID_VALID 0x80000000
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#define VXLAN_ENCAP_MASK_MAC_VALID 0x40000000
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struct bgp_encap_type_vxlan {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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/* draft-ietf-idr-tunnel-encaps-02 */
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uint32_t vnid; /* does not include V and M bit */
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uint8_t *mac_address; /* optional */
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};
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struct bgp_encap_type_nvgre {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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/* No subtlvs defined in spec? */
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};
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struct bgp_encap_type_mpls {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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/* No subtlvs defined in spec? */
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};
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struct bgp_encap_type_mpls_in_gre {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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/* No subtlvs defined in spec? */
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};
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struct bgp_encap_type_vxlan_gpe {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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/* No subtlvs defined in spec? */
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};
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struct bgp_encap_type_mpls_in_udp {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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/* No subtlvs defined in spec? */
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};
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struct bgp_encap_type_pbb {
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uint32_t valid_subtlvs;
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struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
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struct bgp_tea_subtlv_encap_pbb st_encap;
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};
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static inline void encode_encap_extcomm(bgp_encap_types tnl_type,
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struct ecommunity_val *eval)
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{
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memset(eval, 0, sizeof(*eval));
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eval->val[0] = ECOMMUNITY_ENCODE_OPAQUE;
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eval->val[1] = ECOMMUNITY_OPAQUE_SUBTYPE_ENCAP;
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eval->val[6] = ((tnl_type) >> 8) & 0xff;
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eval->val[7] = (tnl_type)&0xff;
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}
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#endif /* _QUAGGA_BGP_ENCAP_TYPES_H */
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