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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2004 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>
/*
* 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 interfaces to manage for DHCP_INACTIVITY_WAIT
* seconds. `grandparent' is the pid of the original process when in
* adopt mode.
*/
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;
boolean_t drain_script(iu_eh_t *, void *);
/*
* 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*24*2) /* two days */
/* 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 */
/*
* reasons for why iu_handle_events() returned
*/
enum { DHCP_REASON_INACTIVITY, DHCP_REASON_SIGNAL, DHCP_REASON_TERMINATE };
#ifdef __cplusplus
}
#endif
#endif /* AGENT_H */
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