bgpd/bgp_encap_types.h

   1 /*
   2  * Copyright 2015, LabN Consulting, L.L.C.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17  *
  18  */
  19
  20 #ifndef _QUAGGA_BGP_ENCAP_TYPES_H
  21 #define _QUAGGA_BGP_ENCAP_TYPES_H
  22
  23 /* from
  24  * http://www.iana.org/assignments/bgp-parameters/bgp-parameters.xhtml#tunnel-types
  25  */
  26 typedef enum {
  27         BGP_ENCAP_TYPE_RESERVED = 0,
  28         BGP_ENCAP_TYPE_L2TPV3_OVER_IP = 1,
  29         BGP_ENCAP_TYPE_GRE = 2,
  30         BGP_ENCAP_TYPE_TRANSMIT_TUNNEL_ENDPOINT = 3,
  31         BGP_ENCAP_TYPE_IPSEC_IN_TUNNEL_MODE = 4,
  32         BGP_ENCAP_TYPE_IP_IN_IP_TUNNEL_WITH_IPSEC_TRANSPORT_MODE = 5,
  33         BGP_ENCAP_TYPE_MPLS_IN_IP_TUNNEL_WITH_IPSEC_TRANSPORT_MODE = 6,
  34         BGP_ENCAP_TYPE_IP_IN_IP = 7,
  35         BGP_ENCAP_TYPE_VXLAN = 8,
  36         BGP_ENCAP_TYPE_NVGRE = 9,
  37         BGP_ENCAP_TYPE_MPLS = 10, /* NOTE: Encap SAFI&Attribute not used */
  38         BGP_ENCAP_TYPE_MPLS_IN_GRE = 11,
  39         BGP_ENCAP_TYPE_VXLAN_GPE = 12,
  40         BGP_ENCAP_TYPE_MPLS_IN_UDP = 13,
  41         BGP_ENCAP_TYPE_PBB
  42 } bgp_encap_types;
  43
  44 typedef enum {
  45         BGP_ENCAP_SUBTLV_TYPE_ENCAPSULATION = 1,
  46         BGP_ENCAP_SUBTLV_TYPE_PROTO_TYPE = 2,
  47         BGP_ENCAP_SUBTLV_TYPE_IPSEC_TA = 3,
  48         BGP_ENCAP_SUBTLV_TYPE_COLOR = 4,
  49         BGP_ENCAP_SUBTLV_TYPE_REMOTE_ENDPOINT =
  50                 6 /* speculative, IANA assignment TBD */
  51 } bgp_encap_subtlv_types;
  52
  53 /*
  54  * Tunnel Encapsulation Attribute subtlvs
  55  */
  56 struct bgp_tea_subtlv_encap_l2tpv3_over_ip {
  57         uint32_t sessionid;
  58         uint8_t cookie_length;
  59         uint8_t cookie[8];
  60 };
  61
  62 struct bgp_tea_subtlv_encap_gre_key {
  63         uint32_t gre_key;
  64 };
  65
  66 struct bgp_tea_subtlv_encap_pbb {
  67         uint32_t flag_isid : 1;
  68         uint32_t flag_vid : 1;
  69         uint32_t isid : 24;
  70         uint16_t vid : 12;
  71         uint8_t macaddr[6];
  72 };
  73
  74 struct bgp_tea_subtlv_proto_type {
  75         uint16_t proto; /* ether-type */
  76 };
  77
  78 struct bgp_tea_subtlv_color {
  79         uint32_t color;
  80 };
  81
  82 /* per draft-rosen-idr-tunnel-encaps */
  83 struct bgp_tea_subtlv_remote_endpoint {
  84         u_char family; /* IPv4 or IPv6 */
  85         union {
  86                 struct in_addr v4;
  87                 struct in6_addr v6;
  88         } ip_address;
  89         as_t as4; /* always 4 bytes */
  90 };
  91
  92 /*
  93  * This is the length of the value part of the ipsec tunnel authenticator
  94  * subtlv. Currently we only support the length for authenticator type 1.
  95  */
  96 #define BGP_ENCAP_SUBTLV_IPSEC_TA_SIZE  20
  97
  98 struct bgp_tea_subtlv_ipsec_ta {
  99         uint16_t authenticator_type;  /* only type 1 is supported so far */
 100         uint8_t authenticator_length; /* octets in value field */
 101         uint8_t value[BGP_ENCAP_SUBTLV_IPSEC_TA_SIZE];
 102 };
 103
 104 /*
 105  * Subtlv valid flags
 106  * TBD change names to add "VALID"
 107  */
 108 #define BGP_TEA_SUBTLV_ENCAP            0x00000001
 109 #define BGP_TEA_SUBTLV_PROTO_TYPE       0x00000002
 110 #define BGP_TEA_SUBTLV_COLOR            0x00000004
 111 #define BGP_TEA_SUBTLV_IPSEC_TA         0x00000008
 112 #define BGP_TEA_SUBTLV_REMOTE_ENDPOINT  0x00000010
 113
 114 #define CHECK_SUBTLV_FLAG(ptr, flag)  CHECK_FLAG((ptr)->valid_subtlvs, (flag))
 115 #define SET_SUBTLV_FLAG(ptr, flag)      SET_FLAG((ptr)->valid_subtlvs, (flag))
 116 #define UNSET_SUBTLV_FLAG(ptr, flag)  UNSET_FLAG((ptr)->valid_subtlvs, (flag))
 117
 118 /*
 119  * Tunnel Type-specific APIs
 120  */
 121 struct bgp_encap_type_reserved {
 122         uint32_t valid_subtlvs;
 123         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 124 };
 125
 126 struct bgp_encap_type_l2tpv3_over_ip {
 127         uint32_t valid_subtlvs;
 128         struct bgp_tea_subtlv_encap_l2tpv3_over_ip st_encap;
 129         struct bgp_tea_subtlv_proto_type st_proto;       /* optional */
 130         struct bgp_tea_subtlv_color st_color;              /* optional */
 131         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 132 };
 133
 134 struct bgp_encap_type_gre {
 135         uint32_t valid_subtlvs;
 136         struct bgp_tea_subtlv_encap_gre_key st_encap;      /* optional */
 137         struct bgp_tea_subtlv_proto_type st_proto;       /* optional */
 138         struct bgp_tea_subtlv_color st_color;              /* optional */
 139         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 140 };
 141
 142 struct bgp_encap_type_ip_in_ip {
 143         uint32_t valid_subtlvs;
 144         struct bgp_tea_subtlv_proto_type st_proto;       /* optional */
 145         struct bgp_tea_subtlv_color st_color;              /* optional */
 146         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 147 };
 148
 149 struct bgp_encap_type_transmit_tunnel_endpoint {
 150         uint32_t valid_subtlvs;
 151         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 152         /* No subtlvs defined in spec? */
 153 };
 154
 155 struct bgp_encap_type_ipsec_in_tunnel_mode {
 156         uint32_t valid_subtlvs;
 157         struct bgp_tea_subtlv_ipsec_ta st_ipsec_ta;     /* optional */
 158         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 159 };
 160
 161 struct bgp_encap_type_ip_in_ip_tunnel_with_ipsec_transport_mode {
 162         uint32_t valid_subtlvs;
 163         struct bgp_tea_subtlv_ipsec_ta st_ipsec_ta;     /* optional */
 164         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 165 };
 166
 167 struct bgp_encap_type_mpls_in_ip_tunnel_with_ipsec_transport_mode {
 168         uint32_t valid_subtlvs;
 169         struct bgp_tea_subtlv_ipsec_ta st_ipsec_ta;     /* optional */
 170         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 171 };
 172
 173 #define VXLAN_ENCAP_MASK_VNID_VALID 0x80000000
 174 #define VXLAN_ENCAP_MASK_MAC_VALID  0x40000000
 175
 176 struct bgp_encap_type_vxlan {
 177         uint32_t valid_subtlvs;
 178         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 179         /* draft-ietf-idr-tunnel-encaps-02 */
 180         uint32_t vnid;  /* does not include V and M bit */
 181         uint8_t *mac_address; /* optional */
 182 };
 183
 184 struct bgp_encap_type_nvgre {
 185         uint32_t valid_subtlvs;
 186         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 187         /* No subtlvs defined in spec? */
 188 };
 189
 190 struct bgp_encap_type_mpls {
 191         uint32_t valid_subtlvs;
 192         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 193         /* No subtlvs defined in spec? */
 194 };
 195
 196 struct bgp_encap_type_mpls_in_gre {
 197         uint32_t valid_subtlvs;
 198         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 199         /* No subtlvs defined in spec? */
 200 };
 201
 202 struct bgp_encap_type_vxlan_gpe {
 203         uint32_t valid_subtlvs;
 204         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 205         /* No subtlvs defined in spec? */
 206 };
 207
 208 struct bgp_encap_type_mpls_in_udp {
 209         uint32_t valid_subtlvs;
 210         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 211         /* No subtlvs defined in spec? */
 212 };
 213
 214 struct bgp_encap_type_pbb {
 215         uint32_t valid_subtlvs;
 216         struct bgp_tea_subtlv_remote_endpoint st_endpoint; /* optional */
 217         struct bgp_tea_subtlv_encap_pbb st_encap;
 218 };
 219
 220 #endif /* _QUAGGA_BGP_ENCAP_TYPES_H */