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/*
*
* ===================================
* HARP | Host ATM Research Platform
* ===================================
*
*
* This Host ATM Research Platform ("HARP") file (the "Software") is
* made available by Network Computing Services, Inc. ("NetworkCS")
* "AS IS". NetworkCS does not provide maintenance, improvements or
* support of any kind.
*
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
* In no event shall NetworkCS be responsible for any damages, including
* but not limited to consequential damages, arising from or relating to
* any use of the Software or related support.
*
* Copyright 1994-1998 Network Computing Services, Inc.
*
* Copies of this Software may be made, however, the above copyright
* notice must be reproduced on all copies.
*
* @(#) $FreeBSD$
*
*/
/*
* ATM Forum UNI Support
* ---------------------
*
* ITU-T Q.SAAL1 - Subroutines
*
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <net/if.h>
#include <netatm/port.h>
#include <netatm/queue.h>
#include <netatm/atm.h>
#include <netatm/atm_sys.h>
#include <netatm/atm_cm.h>
#include <netatm/uni/sscop.h>
#include <netatm/uni/sscop_misc.h>
#include <netatm/uni/sscop_var.h>
#ifndef lint
__RCSID("@(#) $FreeBSD$");
#endif
/*
* Re-establish a new SSCOP Connection
*
* Arguments:
* sop pointer to sscop connection block
*
* Returns:
* none
*
*/
void
qsaal1_reestablish(sop)
struct sscop *sop;
{
/*
* Stop polling timers
*/
sop->so_timer[SSCOP_T_POLL] = 0;
sop->so_timer[SSCOP_T_NORESP] = 0;
sop->so_flags &= ~SOF_KEEPALIVE;
/*
* Note that we're reestablishing a connection
*/
sop->so_flags |= SOF_REESTAB;
/*
* Send first BGN PDU
*/
sop->so_connctl = 1;
(void) sscop_send_bgn(sop, SSCOP_SOURCE_SSCOP);
/*
* Reset transmit variables
*/
qsaal1_reset_xmit(sop);
/*
* Set retransmit timer
*/
sop->so_timer[SSCOP_T_CC] = sop->so_parm.sp_timecc;
/*
* Wait for BGAK
*/
sop->so_state = SOS_OUTCONN;
return;
}
/*
* Reset connection's transmitter state
*
* Arguments:
* sop pointer to sscop connection block
*
* Returns:
* none
*
*/
void
qsaal1_reset_xmit(sop)
struct sscop *sop;
{
/*
* Drain the transmission queues
*/
sscop_xmit_drain(sop);
/*
* Reset transmit variables
*/
SEQ_SET(sop->so_send, 0);
SEQ_SET(sop->so_pollsend, 0);
SEQ_SET(sop->so_ack, 0);
SEQ_SET(sop->so_pollack, 0);
if (sop->so_state != SOS_INCONN)
SEQ_SET(sop->so_sendmax, 0);
sop->so_polldata = 0;
return;
}
/*
* Reset connection's receiver state
*
* Arguments:
* sop pointer to sscop connection block
*
* Returns:
* none
*
*/
void
qsaal1_reset_rcvr(sop)
struct sscop *sop;
{
/*
* Drain the receiver queues
*/
sscop_rcvr_drain(sop);
/*
* Reset transmit variables
*/
SEQ_SET(sop->so_rcvnext, 0);
SEQ_SET(sop->so_rcvhigh, 0);
SEQ_SET(sop->so_rcvmax, sop->so_parm.sp_rcvwin);
return;
}
/*
* Clear connection's connection data
*
* Arguments:
* sop pointer to sscop connection block
*
* Returns:
* none
*
*/
void
qsaal1_clear_connection(sop)
struct sscop *sop;
{
/*
* Can we clear transmit buffers ??
*/
if ((sop->so_flags & SOF_NOCLRBUF) == 0) {
/*
* Yes, drain the transmission queues
*/
sscop_xmit_drain(sop);
}
/*
* Clear service required flag
*/
sop->so_flags &= ~SOF_XMITSRVC;
/*
* Drain receive queue buffers
*/
sscop_rcvr_drain(sop);
return;
}
|
