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dhcp4_packet.h
Go to the documentation of this file.
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#ifndef included_vnet_dhcp4_packet_h
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#define included_vnet_dhcp4_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/ip4_packet.h
>
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typedef
struct
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{
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u8
option
;
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u8
length
;
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union
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{
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u8
data
[0];
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u32
data_as_u32[0];
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};
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} __attribute__ ((packed))
dhcp_option_t
;
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typedef struct
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{
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u8
opcode
;
/* 1 = request, 2 = reply */
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u8
hardware_type
;
/* 1 = ethernet */
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u8
hardware_address_length
;
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u8
hops
;
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u32
transaction_identifier
;
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u16
seconds
;
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u16
flags
;
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#define DHCP_FLAG_BROADCAST (1<<15)
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ip4_address_t
client_ip_address
;
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ip4_address_t
your_ip_address
;
/* use this one */
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ip4_address_t
server_ip_address
;
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ip4_address_t
gateway_ip_address
;
/* use option 3, not this one */
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u8
client_hardware_address[16];
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u8
server_name[64];
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u8
boot_filename[128];
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ip4_address_t
magic_cookie
;
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dhcp_option_t options[0];
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}
dhcp_header_t
;
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typedef
enum
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{
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DHCP_PACKET_DISCOVER
= 1,
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DHCP_PACKET_OFFER
,
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DHCP_PACKET_REQUEST
,
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DHCP_PACKET_ACK
= 5,
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DHCP_PACKET_NAK
,
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}
dhcp_packet_type_t
;
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typedef
enum
dhcp_packet_option_t_
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{
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DHCP_PACKET_OPTION_MSG_TYPE
= 53,
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DHCP_PACKET_OPTION_END
= 0xff,
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}
dhcp_packet_option_t
;
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/* charming antique: 99.130.83.99 is the dhcp magic cookie */
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#define DHCP_MAGIC (clib_host_to_net_u32(0x63825363))
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#endif
/* included_vnet_dhcp4_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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*/
dhcp_header_t::opcode
u8 opcode
Definition:
dhcp4_packet.h:35
dhcp_option_t::length
u8 length
Definition:
dhcp4_packet.h:25
dhcp_option_t::option
u8 option
Definition:
dhcp4_packet.h:24
dhcp_header_t::seconds
u16 seconds
Definition:
dhcp4_packet.h:40
dhcp_header_t
Definition:
dhcp4_packet.h:33
DHCP_PACKET_OFFER
Definition:
dhcp4_packet.h:57
DHCP_PACKET_DISCOVER
Definition:
dhcp4_packet.h:56
data
u8 data[128]
Definition:
ipsec.api:249
dhcp_header_t::server_ip_address
ip4_address_t server_ip_address
Definition:
dhcp4_packet.h:45
u8
unsigned char u8
Definition:
types.h:56
DHCP_PACKET_NAK
Definition:
dhcp4_packet.h:60
dhcp_packet_option_t
enum dhcp_packet_option_t_ dhcp_packet_option_t
u32
unsigned int u32
Definition:
types.h:88
ip4_address_t
Definition:
ip4_packet.h:49
DHCP_PACKET_OPTION_MSG_TYPE
Definition:
dhcp4_packet.h:65
ip4_packet.h
u16
unsigned short u16
Definition:
types.h:57
dhcp_header_t::hops
u8 hops
Definition:
dhcp4_packet.h:38
DHCP_PACKET_REQUEST
Definition:
dhcp4_packet.h:58
dhcp_header_t::client_ip_address
ip4_address_t client_ip_address
Definition:
dhcp4_packet.h:43
dhcp_header_t::flags
u16 flags
Definition:
dhcp4_packet.h:41
dhcp_header_t::gateway_ip_address
ip4_address_t gateway_ip_address
Definition:
dhcp4_packet.h:46
dhcp_header_t::transaction_identifier
u32 transaction_identifier
Definition:
dhcp4_packet.h:39
dhcp_header_t::hardware_address_length
u8 hardware_address_length
Definition:
dhcp4_packet.h:37
DHCP_PACKET_OPTION_END
Definition:
dhcp4_packet.h:66
dhcp_header_t::magic_cookie
ip4_address_t magic_cookie
Definition:
dhcp4_packet.h:50
dhcp_option_t
Definition:
dhcp4_packet.h:22
dhcp_packet_option_t_
dhcp_packet_option_t_
Definition:
dhcp4_packet.h:63
DHCP_PACKET_ACK
Definition:
dhcp4_packet.h:59
dhcp_packet_type_t
dhcp_packet_type_t
Definition:
dhcp4_packet.h:54
dhcp_header_t::hardware_type
u8 hardware_type
Definition:
dhcp4_packet.h:36
dhcp_header_t::your_ip_address
ip4_address_t your_ip_address
Definition:
dhcp4_packet.h:44
src
vnet
dhcp
dhcp4_packet.h
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