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Diffstat (limited to 'src/plugins/dhcp/dhcp6_packet.h')
| -rw-r--r-- | src/plugins/dhcp/dhcp6_packet.h | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/src/plugins/dhcp/dhcp6_packet.h b/src/plugins/dhcp/dhcp6_packet.h new file mode 100644 index 00000000000..d5467952a64 --- /dev/null +++ b/src/plugins/dhcp/dhcp6_packet.h @@ -0,0 +1,271 @@ +#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; ip6_address_t addr; u32 preferred; + u32 valid; + }) dhcpv6_ia_opt_addr_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: + */ |