#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; /* * DHCPv6 options types */ enum { DHCPV6_OPTION_CLIENTID = 1, DHCPV6_OPTION_SERVERID = 2, DHCPV6_OPTION_IA_NA = 3, DHCPV6_OPTION_IA_TA = 4, DHCPV6_OPTION_IAADDR = 5, DHCPV6_OPTION_ORO = 6, DHCPV6_OPTION_PREFERENCE = 7, DHCPV6_OPTION_ELAPSED_TIME = 8, DHCPV6_OPTION_RELAY_MSG = 9, DHCPV6_OPTION_AUTH = 11, DHCPV6_OPTION_UNICAST = 12, DHCPV6_OPTION_STATUS_CODE = 13, DHCPV6_OPTION_RAPID_COMMIT = 14, DHCPV6_OPTION_USER_CLASS = 15, DHCPV6_OPTION_VENDOR_CLASS = 16, DHCPV6_OPTION_VENDOR_OPTS = 17, DHCPV6_OPTION_INTERFACE_ID = 18, // relay agent fills this DHCPV6_OPTION_RECONF_MSG = 19, DHCPV6_OPTION_RECONF_ACCEPT = 20, DHCPV6_OPTION_REMOTEID = 37, // relay agent fills this DHCPV6_OPTION_VSS = 68, // relay agent fills this DHCPV6_OPTION_CLIENT_LINK_LAYER_ADDRESS = 79, 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 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_ { union { u8 msg_type; //DHCP msg type u32 xid; // transaction id }u; u8 data[0]; } dhcpv6_header_t; 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; //Structure for DHCPv6 RELAY-FORWARD and DHCPv6 RELAY-REPLY pkts 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; 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; typedef CLIB_PACKED (struct { u16 option; u16 length; u8 data[0]; }) dhcpv6_option_t; typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u32 int_idx; }) dhcpv6_int_id_t; typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u8 data[8]; // data[0]:type, data[1..7]: VPN ID }) dhcpv6_vss_t; typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u32 ent_num; u32 rmt_id; }) dhcpv6_rmt_id_t; typedef CLIB_PACKED (struct { dhcpv6_option_t opt; u16 link_type; u8 data[6]; // data[0]:data[5]: MAC address }) dhcpv6_client_mac_t; #endif /* included_vnet_dhcp6_packet_h */