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Diffstat (limited to 'bgpd/bgp_encap_types.h')
| -rw-r--r-- | bgpd/bgp_encap_types.h | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/bgpd/bgp_encap_types.h b/bgpd/bgp_encap_types.h new file mode 100644 index 0000000..8d1bf68 --- /dev/null +++ b/bgpd/bgp_encap_types.h @@ -0,0 +1,231 @@ +/* + * 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 */ |