1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/*
* Copyright (c) 2015 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.
*/
/*
* client.h: dhcp client
*/
#ifndef included_dhcp_client_h
#define included_dhcp_client_h
#include <vnet/ip/ip.h>
#include <vnet/dhcp/dhcp4_packet.h>
#define foreach_dhcp_client_state \
_(DHCP_DISCOVER) \
_(DHCP_REQUEST) \
_(DHCP_BOUND)
typedef enum
{
#define _(a) a,
foreach_dhcp_client_state
#undef _
} dhcp_client_state_t;
typedef struct
{
dhcp_client_state_t state;
/* the interface in question */
u32 sw_if_index;
/* State machine retry counter */
u32 retry_count;
/* Send next pkt at this time */
f64 next_transmit;
f64 lease_expires;
/* DHCP transaction ID, a random number */
u32 transaction_id;
/* leased address, other learned info DHCP */
ip4_address_t leased_address; /* from your_ip_address field */
ip4_address_t dhcp_server;
u32 subnet_mask_width; /* option 1 */
ip4_address_t router_address; /* option 3 */
u32 lease_renewal_interval; /* option 51 */
u32 lease_lifetime; /* option 59 */
/* Requested data (option 55) */
u8 *option_55_data;
u8 *l2_rewrite;
/* hostname and software client identifiers */
u8 *hostname;
u8 *client_identifier; /* software version, e.g. vpe 1.0 */
/* Information used for event callback */
u32 client_index;
u32 pid;
void *event_callback;
} dhcp_client_t;
typedef struct
{
/* DHCP client pool */
dhcp_client_t *clients;
uword *client_by_sw_if_index;
u32 seed;
/* convenience */
vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
} dhcp_client_main_t;
typedef struct
{
int is_add;
u32 sw_if_index;
/* vectors, consumed by dhcp client code */
u8 *hostname;
u8 *client_identifier;
/* Bytes containing requested option numbers */
u8 *option_55_data;
/* Information used for event callback */
u32 client_index;
u32 pid;
void *event_callback;
} dhcp_client_add_del_args_t;
extern dhcp_client_main_t dhcp_client_main;
#define EVENT_DHCP_CLIENT_WAKEUP 1
int dhcp_client_for_us (u32 bi0,
vlib_buffer_t * b0,
ip4_header_t * ip0,
udp_header_t * u0, dhcp_header_t * dh0);
int dhcp_client_config (vlib_main_t * vm,
u32 sw_if_index,
u8 * hostname,
u8 * client_id,
u32 is_add,
u32 client_index, void *event_callback, u32 pid);
#endif /* included_dhcp_client_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
