FD.io VPP  v17.01.1-3-gc6833f8
Vector Packet Processing
packet.h
Go to the documentation of this file.
1 #ifndef included_vnet_dhcp_packet_h
2 #define included_vnet_dhcp_packet_h
3 
4 /*
5  * DHCP packet format
6  *
7  * Copyright (c) 2013 Cisco and/or its affiliates.
8  * Licensed under the Apache License, Version 2.0 (the "License");
9  * you may not use this file except in compliance with the License.
10  * You may obtain a copy of the License at:
11  *
12  * http://www.apache.org/licenses/LICENSE-2.0
13  *
14  * Unless required by applicable law or agreed to in writing, software
15  * distributed under the License is distributed on an "AS IS" BASIS,
16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17  * See the License for the specific language governing permissions and
18  * limitations under the License.
19  */
20 #include <vnet/ip/ip4_packet.h>
21 
22 typedef struct {
23  u8 opcode; /* 1 = request, 2 = reply */
24  u8 hardware_type; /* 1 = ethernet */
30 #define DHCP_FLAG_BROADCAST (1<<15)
32  ip4_address_t your_ip_address; /* use this one */
34  ip4_address_t gateway_ip_address; /* use option 3, not this one */
35  u8 client_hardware_address[16];
36  u8 server_name[64];
37  u8 boot_filename[128];
39  u8 options[0];
41 
42 typedef struct {
45  union {
46  u8 data[0];
47  u32 data_as_u32[0];
48  };
49 } __attribute__((packed)) dhcp_option_t;
50 
51 typedef enum {
57 
58 /* charming antique: 99.130.83.99 is the dhcp magic cookie */
59 #define DHCP_MAGIC (clib_host_to_net_u32(0x63825363))
60 
61 #endif /* included_vnet_dhcp_packet_h */
dhcp_packet_type_t
Definition: packet.h:51
u16 seconds
Definition: packet.h:28
ip4_address_t server_ip_address
Definition: packet.h:33
ip4_address_t client_ip_address
Definition: packet.h:31
unsigned int u32
Definition: types.h:88
u16 flags
Definition: packet.h:29
ip4_address_t gateway_ip_address
Definition: packet.h:34
u32 transaction_identifier
Definition: packet.h:27
u8 hardware_address_length
Definition: packet.h:25
unsigned short u16
Definition: types.h:57
ip4_address_t magic_cookie
Definition: packet.h:38
unsigned char u8
Definition: types.h:56
u8 hardware_type
Definition: packet.h:24
ip4_address_t your_ip_address
Definition: packet.h:32