266 lines
4.8 KiB
C
266 lines
4.8 KiB
C
/*
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*
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* ===================================
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* HARP | Host ATM Research Platform
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* ===================================
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*
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*
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* This Host ATM Research Platform ("HARP") file (the "Software") is
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* made available by Network Computing Services, Inc. ("NetworkCS")
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* "AS IS". NetworkCS does not provide maintenance, improvements or
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* support of any kind.
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*
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* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
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* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
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* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
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* In no event shall NetworkCS be responsible for any damages, including
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* but not limited to consequential damages, arising from or relating to
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* any use of the Software or related support.
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*
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* Copyright 1994-1998 Network Computing Services, Inc.
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*
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* Copies of this Software may be made, however, the above copyright
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* notice must be reproduced on all copies.
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*
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* @(#) $FreeBSD$
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*
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*/
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/*
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* Server Cache Synchronization Protocol (SCSP) Support
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* ----------------------------------------------------
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*
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* Timer processing
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*
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netatm/queue.h>
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#include <netatm/atm.h>
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#include <netatm/atm_if.h>
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#include <netatm/atm_sap.h>
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#include <netatm/atm_sys.h>
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#include <netatm/atm_ioctl.h>
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#include <errno.h>
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#include <libatm.h>
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#include <stdio.h>
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#include <syslog.h>
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#include "scsp_msg.h"
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#include "scsp_if.h"
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#include "scsp_var.h"
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#ifndef lint
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__RCSID("@(#) $FreeBSD$");
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#endif
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/*
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* Process an SCSP Open timeout
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*
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* The open timer is set when an attempt to open a VCC to a DCS fails.
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* This routine will be called when the timer fires and will retry
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* the open. Retries can continue indefinitely.
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*
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* Arguments:
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* stp pointer to an SCSP timer block
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*
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* Returns:
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* None
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*
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*/
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void
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scsp_open_timeout(stp)
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Harp_timer *stp;
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{
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Scsp_dcs *dcsp;
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/*
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* Back off to start of DCS entry
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*/
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dcsp = (Scsp_dcs *) ((caddr_t)stp -
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(int)(&((Scsp_dcs *)0)->sd_open_t));
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/*
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* Retry the connection
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*/
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if (scsp_dcs_connect(dcsp)) {
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/*
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* Connect failed -- we hope the error was temporary
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* and set the timer to try again later
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*/
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HARP_TIMER(&dcsp->sd_open_t, SCSP_Open_Interval,
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scsp_open_timeout);
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}
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}
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/*
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* Process an SCSP Hello timeout
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*
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* The Hello timer fires every SCSP_HELLO_Interval seconds. This
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* routine will notify the Hello FSM when the timer fires.
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*
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* Arguments:
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* stp pointer to an SCSP timer block
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*
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* Returns:
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* None
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*
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*/
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void
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scsp_hello_timeout(stp)
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Harp_timer *stp;
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{
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Scsp_dcs *dcsp;
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/*
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* Back off to start of DCS entry
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*/
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dcsp = (Scsp_dcs *) ((caddr_t)stp -
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(int)(&((Scsp_dcs *)0)->sd_hello_h_t));
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/*
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* Call the Hello FSM
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*/
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(void)scsp_hfsm(dcsp, SCSP_HFSM_HELLO_T, (Scsp_msg *)0);
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return;
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}
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/*
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* Process an SCSP receive timeout
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*
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* The receive timer is started whenever the Hello FSM receives a
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* Hello message from its DCS. If the timer fires, it means that no
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* Hello messages have been received in the DCS's Hello interval.
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*
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* Arguments:
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* stp pointer to an SCSP timer block
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*
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* Returns:
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* None
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*
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*/
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void
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scsp_hello_rcv_timeout(stp)
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Harp_timer *stp;
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{
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Scsp_dcs *dcsp;
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/*
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* Back off to start of DCS entry
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*/
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dcsp = (Scsp_dcs *) ((caddr_t)stp -
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(int)(&((Scsp_dcs *)0)->sd_hello_rcv_t));
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/*
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* Call the Hello FSM
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*/
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(void)scsp_hfsm(dcsp, SCSP_HFSM_RCV_T, (void *)0);
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return;
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}
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/*
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* Process an SCSP CA retransmit timeout
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*
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* Arguments:
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* stp pointer to an SCSP timer block
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*
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* Returns:
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* None
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*
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*/
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void
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scsp_ca_retran_timeout(stp)
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Harp_timer *stp;
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{
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Scsp_dcs *dcsp;
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/*
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* Back off to start of DCS entry
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*/
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dcsp = (Scsp_dcs *) ((caddr_t)stp -
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(int)(&((Scsp_dcs *)0)->sd_ca_rexmt_t));
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/*
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* Call the CA FSM
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*/
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(void)scsp_cafsm(dcsp, SCSP_CAFSM_CA_T, (void *)0);
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return;
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}
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/*
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* Process an SCSP CSUS retransmit timeout
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*
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* Arguments:
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* stp pointer to an SCSP timer block
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*
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* Returns:
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* None
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*
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*/
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void
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scsp_csus_retran_timeout(stp)
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Harp_timer *stp;
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{
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Scsp_dcs *dcsp;
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/*
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* Back off to start of DCS entry
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*/
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dcsp = (Scsp_dcs *) ((caddr_t)stp -
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(int)(&((Scsp_dcs *)0)->sd_csus_rexmt_t));
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/*
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* Call the CA FSM
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*/
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(void)scsp_cafsm(dcsp, SCSP_CAFSM_CSUS_T, (void *)0);
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return;
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}
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/*
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* Process an SCSP CSU Req retransmit timeout
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*
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* Arguments:
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* stp pointer to an SCSP timer block
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*
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* Returns:
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* None
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*
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*/
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void
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scsp_csu_req_retran_timeout(stp)
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Harp_timer *stp;
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{
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Scsp_csu_rexmt *rxp;
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Scsp_dcs *dcsp;
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/*
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* Back off to start of CSU Request retransmission entry
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*/
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rxp = (Scsp_csu_rexmt *) ((caddr_t)stp -
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(int)(&((Scsp_csu_rexmt *)0)->sr_t));
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dcsp = rxp->sr_dcs;
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/*
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* Call the CA FSM
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*/
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(void)scsp_cafsm(dcsp, SCSP_CAFSM_CSU_T, (void *)rxp);
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return;
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}
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