/* * srv6_end.h * * Copyright (c) 2019 Arrcus Inc and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef __included_srv6_end_h__ #define __included_srv6_end_h__ #include <vnet/vnet.h> #include <vnet/ip/ip.h> #include <vnet/srv6/sr.h> #include <vnet/srv6/sr_packet.h> #include <vppinfra/error.h> #include <vppinfra/elog.h> #define SRV6_GTP_UDP_DST_PORT 2152 #define SRV6_NHTYPE_NONE 0 #define SRV6_NHTYPE_IPV4 1 #define SRV6_NHTYPE_IPV6 2 #define SRV6_NHTYPE_NON_IP 3 #ifndef IP_PROTOCOL_IP6_ETHERNET #define IP_PROTOCOL_IP6_ETHERNET 143 #endif #define SRV6_GTP6_UNKNOW 0 #define SRV6_GTP6_DT4 1 #define SRV6_GTP6_DT6 2 #define SRV6_GTP6_DT46 3 #define SRV6_GTP4_UNKNOW 0 #define SRV6_GTP4_DT4 1 #define SRV6_GTP4_DT6 2 #define SRV6_GTP4_DT46 3 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ #define BITALIGN2(A,B) A; B #define BITALIGN3(A,B,C) A; B; C #else #define BITALIGN2(A,B) B; A #define BITALIGN3(A,B,C) C; B; A #endif #define GTPU_EXTHDR_FLAG 0x04 #define GTPU_SEQ_FLAG 0x02 #define GTPU_EXTHDR_PDU_SESSION 0x85 #define SRH_TAG_ECHO_REPLY 0x0008 #define SRH_TAG_ECHO_REQUEST 0x0004 #define SRH_TAG_ERROR_INDICATION 0x0002 #define SRH_TAG_END_MARKER 0x0001 #define GTPU_RECOVERY_IE_TYPE 0x0e #define GTPU_IE_MAX_SIZ 256 #define SRH_TLV_USER_PLANE_CONTAINER 0x0a /* tentative */ /* *INDENT-OFF* */ typedef struct { u8 type; u8 restart_counter; } __attribute__ ((packed)) gtpu_recovery_ie; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef struct { u16 seq; u8 npdu_num; u8 nextexthdr; } __attribute__ ((packed)) gtpu_exthdr_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef struct { u8 ver_flags; u8 type; u16 length; /* length in octets of the payload */ u32 teid; gtpu_exthdr_t ext[0]; } __attribute__ ((packed)) gtpu_header_t; /* *INDENT-ON* */ #define GTPU_TYPE_ECHO_REQUEST 1 #define GTPU_TYPE_ECHO_REPLY 2 #define GTPU_TYPE_ERROR_INDICATION 26 #define GTPU_TYPE_END_MARKER 254 #define GTPU_TYPE_GTPU 255 /* *INDENT-OFF* */ typedef struct { BITALIGN2 (u8 ppi:3, u8 spare:5); u8 padding[3]; } __attribute__ ((packed)) gtpu_paging_policy_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef struct { u8 exthdrlen; BITALIGN2(u8 type:4, u8 spare:4); union { struct gtpu_qfi_bits {BITALIGN3(u8 p:1, u8 r:1, u8 qfi:6); } bits; u8 val; } u; gtpu_paging_policy_t paging[0]; u8 nextexthdr; } __attribute__ ((packed)) gtpu_pdu_session_t; /* *INDENT-ON* */ #define GTPU_PDU_SESSION_P_BIT_MASK 0x80 #define GTPU_PDU_SESSION_R_BIT_MASK 0x40 #define GTPU_PDU_SESSION_QFI_MASK 0x3f #define SRV6_PDU_SESSION_U_BIT_MASK 0x01 #define SRV6_PDU_SESSION_R_BIT_MASK 0x02 #define SRV6_PDU_SESSION_QFI_MASK 0xfC /* *INDENT-OFF* */ typedef struct { ip4_header_t ip4; /* 20 bytes */ udp_header_t udp; /* 8 bytes */ gtpu_header_t gtpu; /* 8 bytes */ } __attribute__ ((packed)) ip4_gtpu_header_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef struct { ip6_header_t ip6; /* 40 bytes */ udp_header_t udp; /* 8 bytes */ gtpu_header_t gtpu; /* 8 bytes */ } __attribute__ ((packed)) ip6_gtpu_header_t; /* *INDENT-ON* */ #define GTPU_V1_VER (1<<5) #define GTPU_PT_GTP (1<<4) /* *INDENT-OFF* */ typedef struct { u8 type; u8 length; u8 value[0]; } __attribute__ ((packed)) user_plane_sub_tlv_t; /* *INDENT-ON* */ #define USER_PLANE_SUB_TLV_IE 0x01 typedef struct srv6_end_gtp6_param_s { u8 nhtype; ip6_address_t sr_prefix; u32 sr_prefixlen; } srv6_end_gtp6_param_t; typedef struct srv6_end_gtp6_dt_param_s { u8 type; u32 fib4_index; u32 fib6_index; u32 local_fib_index; } srv6_end_gtp6_dt_param_t; typedef struct srv6_t_gtp4_dt_param_s { u8 type; u32 fib4_index; u32 fib6_index; u32 local_fib_index; } srv6_t_gtp4_dt_param_t; typedef struct srv6_end_gtp4_param_s { u8 nhtype; ip6_address_t sr_prefix; u32 sr_prefixlen; ip6_address_t v6src_prefix; u32 v6src_prefixlen; u32 v4src_position; } srv6_end_gtp4_param_t; typedef struct srv6_end_main_v4_s { vlib_main_t *vlib_main; vnet_main_t *vnet_main; u32 end_m_gtp4_e_node_index; u32 error_node_index; u32 dst_p_len; // dst prefix len u32 src_p_len; // src prefix len ip4_gtpu_header_t cache_hdr; } srv6_end_main_v4_t; typedef struct srv6_t_main_v4_decap_s { vlib_main_t *vlib_main; vnet_main_t *vnet_main; u32 t_m_gtp4_d_node_index; u32 error_node_index; ip6_header_t cache_hdr; } srv6_t_main_v4_decap_t; extern srv6_end_main_v4_t srv6_end_main_v4; extern srv6_t_main_v4_decap_t srv6_t_main_v4_decap; extern vlib_node_registration_t srv6_end_m_gtp4_e; typedef struct srv6_end_main_v6_s { vlib_main_t *vlib_main; vnet_main_t *vnet_main; u32 end_m_gtp6_e_node_index; u32 error_node_index; ip6_gtpu_header_t cache_hdr; } srv6_end_main_v6_t; extern srv6_end_main_v6_t srv6_end_main_v6; extern vlib_node_registration_t srv6_end_m_gtp6_e; typedef struct srv6_end_main_v6_decap_s { vlib_main_t *vlib_main; vnet_main_t *vnet_main; u32 end_m_gtp6_d_node_index; u32 error_node_index; ip6_header_t cache_hdr; } srv6_end_main_v6_decap_t; extern srv6_end_main_v6_decap_t srv6_end_main_v6_decap; extern vlib_node_registration_t srv6_end_m_gtp6_d; typedef struct srv6_end_main_v6_decap_di_s { vlib_main_t *vlib_main; vnet_main_t *vnet_main; u32 end_m_gtp6_d_di_node_index; u32 error_node_index; ip6srv_combo_header_t cache_hdr; } srv6_end_main_v6_decap_di_t; extern srv6_end_main_v6_decap_di_t srv6_end_main_v6_decap_di; extern vlib_node_registration_t srv6_end_m_gtp6_d_di; typedef struct srv6_end_main_v6_dt_s { vlib_main_t *vlib_main; vnet_main_t *vnet_main; u32 end_m_gtp6_dt_node_index; u32 error_node_index; } srv6_end_main_v6_dt_t; extern srv6_end_main_v6_dt_t srv6_end_main_v6_dt; extern vlib_node_registration_t srv6_end_m_gtp6_dt; typedef struct srv6_t_main_v4_dt_s { vlib_main_t *vlib_main; vnet_main_t *vnet_main; u32 t_m_gtp4_dt_node_index; u32 error_node_index; } srv6_t_main_v4_dt_t; extern srv6_t_main_v4_dt_t srv6_t_main_v4_dt; extern vlib_node_registration_t srv6_t_m_gtp4_dt; #endif /* __included_srv6_end_h__ */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */