#ifndef included_vnet_dhcp6_packet_h #define included_vnet_dhcp6_packet_h /* * DHCP packet format * * Copyright (c) 2013 Cisco 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. */ #include <vnet/ip/ip6_packet.h> // #define DHCP_VRF_NAME_MAX_LEN L3VM_MAX_NAME_STR_LEN // #define DHCPV6_MAX_VRF_NAME_LEN L3VM_MAX_NAME_STR_LEN #define DHCP_MAX_RELAY_ADDR 16 #define PROTO_UDP 17 #define DHCPV6_CLIENT_PORT 546 #define DHCPV6_SERVER_PORT 547 #define HOP_COUNT_LIMIT 32 #define DHCPV6_CISCO_ENT_NUM 9 /* * DHCPv6 message types */ typedef enum dhcpv6_msg_type_ { DHCPV6_MSG_SOLICIT = 1, DHCPV6_MSG_ADVERTISE = 2, DHCPV6_MSG_REQUEST = 3, DHCPV6_MSG_CONFIRM = 4, DHCPV6_MSG_RENEW = 5, DHCPV6_MSG_REBIND = 6, DHCPV6_MSG_REPLY = 7, DHCPV6_MSG_RELEASE = 8, DHCPV6_MSG_DECLINE = 9, DHCPV6_MSG_RECONFIGURE = 10, DHCPV6_MSG_INFORMATION_REQUEST = 11, DHCPV6_MSG_RELAY_FORW = 12, DHCPV6_MSG_RELAY_REPL = 13, } dhcpv6_msg_type_t; /* Name, code, min payload length */ #define dhcpv6_foreach_option \ _(CLIENTID , 1 , 4 ) \ _(SERVERID , 2 , 4 ) \ _(IA_NA , 3 , 12) \ _(IA_TA , 4 , 4 ) \ _(IAADDR , 5 , 24) \ _(ORO , 6 , 0 ) \ _(PREFERENCE , 7 , 1 ) \ _(ELAPSED_TIME , 8 , 2 ) \ _(RELAY_MSG , 9 , 0 ) \ _(AUTH , 11 , 11) \ _(UNICAST , 12 , 16) \ _(STATUS_CODE , 13 , 2 ) \ _(RAPID_COMMIT , 14 , 0 ) \ _(USER_CLASS , 15 , 0 ) \ _(VENDOR_CLASS , 16 , 4 ) \ _(VENDOR_OPTS , 17 , 4 ) \ _(INTERFACE_ID , 18 , 0 ) \ _(RECONF_MSG , 19 , 1 ) \ _(RECONF_ACCEPT , 20 , 0 ) \ _(DNS_SEARCH , 24 , 0 ) \ _(IA_PD , 25 , 12) \ _(IAPREFIX , 26 , 25) \ _(REMOTEID , 37 , 4 ) \ _(VSS , 68 , 1 ) \ _(CLIENT_LINK_LAYER_ADDRESS, 79 , 2 ) /* * DHCPv6 options types */ enum { #define _(a,b,c) DHCPV6_OPTION_##a = b, dhcpv6_foreach_option #undef _ DHCPV6_OPTION_MAX }; /* * DHCPv6 status codes */ enum { DHCPV6_STATUS_SUCCESS = 0, DHCPV6_STATUS_UNSPEC_FAIL = 1, DHCPV6_STATUS_NOADDRS_AVAIL = 2, DHCPV6_STATUS_NO_BINDING = 3, DHCPV6_STATUS_NOT_ONLINK = 4, DHCPV6_STATUS_USE_MULTICAST = 5, DHCPV6_STATUS_NOPREFIX_AVAIL = 6, }; /* * DHCPv6 DUID types */ enum { DHCPV6_DUID_LLT = 1, /* DUID Based on Link-layer Address Plus Time */ DHCPV6_DUID_EN = 2, /* DUID Based on Enterprise Number */ DHCPV6_DUID_LL = 3, /* DUID Based on Link-layer Address */ }; //Structure for DHCPv6 payload from client typedef struct dhcpv6_hdr_ { u8 msg_type; //DHCP msg type u8 xid[3]; //Transaction id u8 data[0]; } dhcpv6_header_t; /* *INDENT-OFF* */ typedef CLIB_PACKED (struct dhcpv6_relay_ctx_ { dhcpv6_header_t *pkt; u32 pkt_len; u32 dhcpv6_len; //DHCPv6 payload load // if_ordinal iod; u32 if_index; u32 ctx_id; char ctx_name[32+1]; u8 dhcp_msg_type; }) dhcpv6_relay_ctx_t; /* *INDENT-ON* */ //Structure for DHCPv6 RELAY-FORWARD and DHCPv6 RELAY-REPLY pkts /* *INDENT-OFF* */ typedef CLIB_PACKED (struct dhcpv6_relay_hdr_ { u8 msg_type; u8 hop_count; ip6_address_t link_addr; ip6_address_t peer_addr; u8 data[0]; }) dhcpv6_relay_hdr_t; /* *INDENT-ON* */ typedef enum dhcp_stats_action_type_ { DHCP_STATS_ACTION_FORWARDED = 1, DHCP_STATS_ACTION_RECEIVED, DHCP_STATS_ACTION_DROPPED } dhcp_stats_action_type_t; //Generic counters for a packet typedef struct dhcp_stats_counters_ { u64 rx_pkts; //counter for received pkts u64 tx_pkts; //counter for forwarded pkts u64 drops; //counter for dropped pkts } dhcp_stats_counters_t; typedef enum dhcpv6_stats_drop_reason_ { DHCPV6_RELAY_PKT_DROP_RELAYDISABLE = 1, DHCPV6_RELAY_PKT_DROP_MAX_HOPS, DHCPV6_RELAY_PKT_DROP_VALIDATION_FAIL, DHCPV6_RELAY_PKT_DROP_UNKNOWN_OP_INTF, DHCPV6_RELAY_PKT_DROP_BAD_CONTEXT, DHCPV6_RELAY_PKT_DROP_OPT_INSERT_FAIL, DHCPV6_RELAY_PKT_DROP_REPLY_FROM_CLIENT, } dhcpv6_stats_drop_reason_t; #define dhcpv6_optlen(opt) clib_net_to_host_u16((opt)->length) /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { u16 option; u16 length; u8 data[0]; }) dhcpv6_option_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u16 status_code; }) dhcpv6_status_code_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u32 int_idx; }) dhcpv6_int_id_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u8 vss_type; u8 data[0]; }) dhcpv6_vss_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u32 ent_num; u32 rmt_id; }) dhcpv6_rmt_id_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u16 link_type; u8 data[6]; // data[0]:data[5]: MAC address }) dhcpv6_client_mac_t; /* *INDENT-ON* */ typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u32 iaid; u32 t1; u32 t2; u8 data[0]; }) dhcpv6_ia_header_t; typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u32 preferred; u32 valid; u8 prefix; ip6_address_t addr; }) dhcpv6_ia_opt_pd_t; typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u16 options[0]; }) dhcpv6_oro_t; typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u16 elapsed_10ms; }) dhcpv6_elapsed_t; typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u16 duid_type; u16 hardware_type; }) dhcpv6_duid_t; typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u16 status_code; u8 message[0]; }) dhcpv6_status_t; #endif /* included_vnet_dhcp6_packet_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */