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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef AGENT_H
#define AGENT_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <libinetutil.h>
#include <dhcpagent_ipc.h>
/*
* agent.h contains general symbols that should be available to all
* source programs that are part of the agent. in general, files
* specific to a given collection of code (such as interface.h or
* dhcpmsg.h) are to be preferred to this dumping ground. use only
* when necessary.
*/
#ifdef __cplusplus
extern "C" {
#endif
/*
* global variables: `tq' and `eh' represent the global timer queue
* and event handler, as described in the README. `class_id' is our
* vendor class id set early on in main(). `inactivity_id' is the
* timer id of the global inactivity timer, which shuts down the agent
* if there are no state machines to manage for DHCP_INACTIVITY_WAIT
* seconds. `grandparent' is the pid of the original process when in
* adopt mode. `rtsock_fd' is the global routing socket file descriptor.
*/
extern iu_tq_t *tq;
extern iu_eh_t *eh;
extern char *class_id;
extern int class_id_len;
extern iu_timer_id_t inactivity_id;
extern pid_t grandparent;
extern int rtsock_fd;
boolean_t drain_script(iu_eh_t *, void *);
boolean_t check_cmd_allowed(DHCPSTATE, dhcp_ipc_type_t);
/*
* global tunable parameters. an `I' in the preceding comment indicates
* an implementation artifact; a `R' in the preceding comment indicates
* that the value was suggested (or required) by RFC2131.
*/
/* I: how many seconds to wait before restarting DHCP on an interface */
#define DHCP_RESTART_WAIT 10
/*
* I: the maximum number of milliseconds to wait before SELECTING on an
* interface. RFC2131 recommends a random wait of between one and ten seconds,
* to speed up DHCP at boot we wait between zero and two seconds.
*/
#define DHCP_SELECT_WAIT 2000
/* R: how many seconds before lease expiration we give up trying to rebind */
#define DHCP_REBIND_MIN 60
/* I: seconds to wait retrying dhcp_expire() if uncancellable async event */
#define DHCP_EXPIRE_WAIT 10
/* R: approximate percentage of lease time to wait until RENEWING state */
#define DHCP_T1_FACT .5
/* R: approximate percentage of lease time to wait until REBINDING state */
#define DHCP_T2_FACT .875
/* I: number of REQUEST attempts before assuming something is awry */
#define DHCP_MAX_REQUESTS 4
/* I: epsilon in seconds used to check if old and new lease times are same */
#define DHCP_LEASE_EPS 30
/* I: if lease is not being extended, seconds left before alerting user */
#define DHCP_LEASE_ERROR_THRESH (60*60) /* one hour */
/* I: how many seconds before bailing out if there's no work to do */
#define DHCP_INACTIVITY_WAIT (60*3) /* three minutes */
/* I: the maximum amount of seconds we use an adopted lease */
#define DHCP_ADOPT_LEASE_MAX (60*60) /* one hour */
/* I: number of seconds grandparent waits for child to finish adoption. */
#define DHCP_ADOPT_SLEEP 30
/* I: the maximum amount of milliseconds to wait for an ipc request */
#define DHCP_IPC_REQUEST_WAIT (3*1000) /* three seconds */
/*
* DHCPv6 timer and retransmit values from RFC 3315.
*/
#define DHCPV6_SOL_MAX_DELAY 1000 /* Max delay of first Solicit; 1s */
#define DHCPV6_CNF_MAX_DELAY 1000 /* Max delay of first Confirm; 1s */
#define DHCPV6_INF_MAX_DELAY 1000 /* Max delay of first Info-req; 1s */
#define DHCPV6_SOL_TIMEOUT 1000 /* Initial Solicit timeout; 1s */
#define DHCPV6_REQ_TIMEOUT 1000 /* Initial Request timeout; 1s */
#define DHCPV6_CNF_TIMEOUT 1000 /* Initial Confirm timeout; 1s */
#define DHCPV6_REN_TIMEOUT 10000 /* Initial Renew timeout; 10s */
#define DHCPV6_REB_TIMEOUT 10000 /* Initial Rebind timeout; 10s */
#define DHCPV6_INF_TIMEOUT 1000 /* Initial Info-req timeout; 1s */
#define DHCPV6_REL_TIMEOUT 1000 /* Initial Release timeout; 1s */
#define DHCPV6_DEC_TIMEOUT 1000 /* Initial Decline timeout; 1s */
#define DHCPV6_SOL_MAX_RT 120000 /* Max Solicit timeout; 2m */
#define DHCPV6_REQ_MAX_RT 30000 /* Max Request timeout; 30s */
#define DHCPV6_CNF_MAX_RT 4000 /* Max Confirm timeout; 4s */
#define DHCPV6_REN_MAX_RT 600000 /* Max Renew timeout; 5m */
#define DHCPV6_REB_MAX_RT 600000 /* Max Rebind timeout; 5m */
#define DHCPV6_INF_MAX_RT 120000 /* Max Info-req timeout; 2m */
#define DHCPV6_CNF_MAX_RD 10000 /* Max Confirm duration; 10s */
#define DHCPV6_REQ_MAX_RC 10 /* Max Request attempts */
#define DHCPV6_REL_MAX_RC 5 /* Max Release attempts */
#define DHCPV6_DEC_MAX_RC 5 /* Max Decline attempts */
/*
* reasons for why iu_handle_events() returned
*/
enum { DHCP_REASON_INACTIVITY, DHCP_REASON_SIGNAL, DHCP_REASON_TERMINATE };
#ifdef __cplusplus
}
#endif
#endif /* AGENT_H */
|
