c3148b1be8
Type: refactor Change-Id: I5235bf3e9aff58af6ba2c14e8c6529c4fc9ec86c Signed-off-by: Damjan Marion <damarion@cisco.com>
256 lines
6.2 KiB
C
256 lines
6.2 KiB
C
#ifndef included_vnet_dhcp6_packet_h
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#define included_vnet_dhcp6_packet_h
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/*
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* DHCP packet format
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*
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* Copyright (c) 2013 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <vnet/ip/ip6_packet.h>
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// #define DHCP_VRF_NAME_MAX_LEN L3VM_MAX_NAME_STR_LEN
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// #define DHCPV6_MAX_VRF_NAME_LEN L3VM_MAX_NAME_STR_LEN
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#define DHCP_MAX_RELAY_ADDR 16
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#define PROTO_UDP 17
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#define DHCPV6_CLIENT_PORT 546
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#define DHCPV6_SERVER_PORT 547
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#define HOP_COUNT_LIMIT 32
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#define DHCPV6_CISCO_ENT_NUM 9
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/*
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* DHCPv6 message types
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*/
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typedef enum dhcpv6_msg_type_
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{
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DHCPV6_MSG_SOLICIT = 1,
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DHCPV6_MSG_ADVERTISE = 2,
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DHCPV6_MSG_REQUEST = 3,
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DHCPV6_MSG_CONFIRM = 4,
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DHCPV6_MSG_RENEW = 5,
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DHCPV6_MSG_REBIND = 6,
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DHCPV6_MSG_REPLY = 7,
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DHCPV6_MSG_RELEASE = 8,
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DHCPV6_MSG_DECLINE = 9,
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DHCPV6_MSG_RECONFIGURE = 10,
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DHCPV6_MSG_INFORMATION_REQUEST = 11,
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DHCPV6_MSG_RELAY_FORW = 12,
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DHCPV6_MSG_RELAY_REPL = 13,
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} dhcpv6_msg_type_t;
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/* Name, code, min payload length */
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#define dhcpv6_foreach_option \
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_(CLIENTID , 1 , 4 ) \
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_(SERVERID , 2 , 4 ) \
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_(IA_NA , 3 , 12) \
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_(IA_TA , 4 , 4 ) \
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_(IAADDR , 5 , 24) \
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_(ORO , 6 , 0 ) \
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_(PREFERENCE , 7 , 1 ) \
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_(ELAPSED_TIME , 8 , 2 ) \
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_(RELAY_MSG , 9 , 0 ) \
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_(AUTH , 11 , 11) \
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_(UNICAST , 12 , 16) \
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_(STATUS_CODE , 13 , 2 ) \
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_(RAPID_COMMIT , 14 , 0 ) \
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_(USER_CLASS , 15 , 0 ) \
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_(VENDOR_CLASS , 16 , 4 ) \
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_(VENDOR_OPTS , 17 , 4 ) \
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_(INTERFACE_ID , 18 , 0 ) \
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_(RECONF_MSG , 19 , 1 ) \
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_(RECONF_ACCEPT , 20 , 0 ) \
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_(DNS_SEARCH , 24 , 0 ) \
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_(IA_PD , 25 , 12) \
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_(IAPREFIX , 26 , 25) \
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_(REMOTEID , 37 , 4 ) \
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_(VSS , 68 , 1 ) \
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_(CLIENT_LINK_LAYER_ADDRESS, 79 , 2 )
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/*
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* DHCPv6 options types
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*/
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enum
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{
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#define _(a,b,c) DHCPV6_OPTION_##a = b,
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dhcpv6_foreach_option
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#undef _
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DHCPV6_OPTION_MAX
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};
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/*
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* DHCPv6 status codes
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*/
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enum
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{
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DHCPV6_STATUS_SUCCESS = 0,
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DHCPV6_STATUS_UNSPEC_FAIL = 1,
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DHCPV6_STATUS_NOADDRS_AVAIL = 2,
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DHCPV6_STATUS_NO_BINDING = 3,
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DHCPV6_STATUS_NOT_ONLINK = 4,
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DHCPV6_STATUS_USE_MULTICAST = 5,
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DHCPV6_STATUS_NOPREFIX_AVAIL = 6,
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};
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/*
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* DHCPv6 DUID types
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*/
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enum
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{
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DHCPV6_DUID_LLT = 1, /* DUID Based on Link-layer Address Plus Time */
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DHCPV6_DUID_EN = 2, /* DUID Based on Enterprise Number */
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DHCPV6_DUID_LL = 3, /* DUID Based on Link-layer Address */
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};
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//Structure for DHCPv6 payload from client
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typedef struct dhcpv6_hdr_
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{
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u8 msg_type; //DHCP msg type
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u8 xid[3]; //Transaction id
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u8 data[0];
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} dhcpv6_header_t;
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typedef CLIB_PACKED (struct dhcpv6_relay_ctx_ {
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dhcpv6_header_t *pkt;
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u32 pkt_len;
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u32 dhcpv6_len; //DHCPv6 payload load
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// if_ordinal iod;
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u32 if_index;
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u32 ctx_id;
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char ctx_name[32+1];
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u8 dhcp_msg_type;
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}) dhcpv6_relay_ctx_t;
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//Structure for DHCPv6 RELAY-FORWARD and DHCPv6 RELAY-REPLY pkts
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typedef CLIB_PACKED (struct dhcpv6_relay_hdr_ {
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u8 msg_type;
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u8 hop_count;
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ip6_address_t link_addr;
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ip6_address_t peer_addr;
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u8 data[0];
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}) dhcpv6_relay_hdr_t;
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typedef enum dhcp_stats_action_type_
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{
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DHCP_STATS_ACTION_FORWARDED = 1,
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DHCP_STATS_ACTION_RECEIVED,
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DHCP_STATS_ACTION_DROPPED
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} dhcp_stats_action_type_t;
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//Generic counters for a packet
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typedef struct dhcp_stats_counters_
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{
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u64 rx_pkts; //counter for received pkts
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u64 tx_pkts; //counter for forwarded pkts
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u64 drops; //counter for dropped pkts
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} dhcp_stats_counters_t;
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typedef enum dhcpv6_stats_drop_reason_
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{
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DHCPV6_RELAY_PKT_DROP_RELAYDISABLE = 1,
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DHCPV6_RELAY_PKT_DROP_MAX_HOPS,
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DHCPV6_RELAY_PKT_DROP_VALIDATION_FAIL,
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DHCPV6_RELAY_PKT_DROP_UNKNOWN_OP_INTF,
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DHCPV6_RELAY_PKT_DROP_BAD_CONTEXT,
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DHCPV6_RELAY_PKT_DROP_OPT_INSERT_FAIL,
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DHCPV6_RELAY_PKT_DROP_REPLY_FROM_CLIENT,
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} dhcpv6_stats_drop_reason_t;
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#define dhcpv6_optlen(opt) clib_net_to_host_u16((opt)->length)
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typedef CLIB_PACKED (struct {
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u16 option;
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u16 length;
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u8 data[0];
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}) dhcpv6_option_t;
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typedef CLIB_PACKED (struct {
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dhcpv6_option_t opt;
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u16 status_code;
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}) dhcpv6_status_code_t;
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typedef CLIB_PACKED (struct {
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dhcpv6_option_t opt;
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u32 int_idx;
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}) dhcpv6_int_id_t;
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typedef CLIB_PACKED (struct {
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dhcpv6_option_t opt;
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u8 vss_type;
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u8 data[0];
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}) dhcpv6_vss_t;
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typedef CLIB_PACKED (struct {
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dhcpv6_option_t opt;
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u32 ent_num;
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u32 rmt_id;
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}) dhcpv6_rmt_id_t;
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typedef CLIB_PACKED (struct {
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dhcpv6_option_t opt;
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u16 link_type;
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u8 data[6]; // data[0]:data[5]: MAC address
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}) dhcpv6_client_mac_t;
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typedef CLIB_PACKED (struct
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{
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dhcpv6_option_t opt; u32 iaid; u32 t1;
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u32 t2;
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u8 data[0];
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}) dhcpv6_ia_header_t;
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typedef CLIB_PACKED (struct
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{
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dhcpv6_option_t opt; u32 preferred; u32 valid; u8 prefix;
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ip6_address_t addr;
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}) dhcpv6_ia_opt_pd_t;
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typedef CLIB_PACKED (struct
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{
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dhcpv6_option_t opt; ip6_address_t addr; u32 preferred;
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u32 valid;
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}) dhcpv6_ia_opt_addr_t;
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typedef CLIB_PACKED (struct
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{
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dhcpv6_option_t opt;
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u16 options[0];
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}) dhcpv6_oro_t;
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typedef CLIB_PACKED (struct
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{
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dhcpv6_option_t opt; u16 elapsed_10ms;
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}) dhcpv6_elapsed_t;
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typedef CLIB_PACKED (struct
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{
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dhcpv6_option_t opt; u16 duid_type;
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u16 hardware_type;
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}) dhcpv6_duid_t;
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typedef CLIB_PACKED (struct
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{
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dhcpv6_option_t opt; u16 status_code;
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u8 message[0];
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}) dhcpv6_status_t;
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#endif /* included_vnet_dhcp6_packet_h */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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