1820df7a2d
Host ATM Research Platform (HARP), Network Computing Services, Inc. This software was developed with the support of the Defense Advanced Research Projects Agency (DARPA).
207 lines
3.6 KiB
C
207 lines
3.6 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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* @(#) $Id: qsaal1_subr.c,v 1.6 1998/04/07 23:21:17 mks Exp $
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*
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*/
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/*
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* ATM Forum UNI Support
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* ---------------------
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*
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* ITU-T Q.SAAL1 - Subroutines
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*
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*/
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#ifndef lint
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static char *RCSid = "@(#) $Id: qsaal1_subr.c,v 1.6 1998/04/07 23:21:17 mks Exp $";
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#endif
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#include <netatm/kern_include.h>
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#include <netatm/uni/uni.h>
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#include <netatm/uni/sscop.h>
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#include <netatm/uni/sscop_misc.h>
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#include <netatm/uni/sscop_pdu.h>
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#include <netatm/uni/sscop_var.h>
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/*
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* Re-establish a new SSCOP Connection
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*
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* Arguments:
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* sop pointer to sscop connection 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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qsaal1_reestablish(sop)
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struct sscop *sop;
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{
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/*
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* Stop polling timers
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*/
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sop->so_timer[SSCOP_T_POLL] = 0;
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sop->so_timer[SSCOP_T_NORESP] = 0;
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sop->so_flags &= ~SOF_KEEPALIVE;
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/*
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* Note that we're reestablishing a connection
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*/
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sop->so_flags |= SOF_REESTAB;
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/*
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* Send first BGN PDU
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*/
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sop->so_connctl = 1;
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(void) sscop_send_bgn(sop, SSCOP_SOURCE_SSCOP);
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/*
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* Reset transmit variables
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*/
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qsaal1_reset_xmit(sop);
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/*
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* Set retransmit timer
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*/
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sop->so_timer[SSCOP_T_CC] = sop->so_parm.sp_timecc;
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/*
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* Wait for BGAK
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*/
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sop->so_state = SOS_OUTCONN;
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return;
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}
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/*
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* Reset connection's transmitter state
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*
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* Arguments:
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* sop pointer to sscop connection 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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qsaal1_reset_xmit(sop)
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struct sscop *sop;
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{
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/*
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* Drain the transmission queues
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*/
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sscop_xmit_drain(sop);
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/*
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* Reset transmit variables
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*/
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SEQ_SET(sop->so_send, 0);
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SEQ_SET(sop->so_pollsend, 0);
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SEQ_SET(sop->so_ack, 0);
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SEQ_SET(sop->so_pollack, 0);
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if (sop->so_state != SOS_INCONN)
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SEQ_SET(sop->so_sendmax, 0);
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sop->so_polldata = 0;
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return;
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}
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/*
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* Reset connection's receiver state
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*
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* Arguments:
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* sop pointer to sscop connection 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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qsaal1_reset_rcvr(sop)
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struct sscop *sop;
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{
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/*
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* Drain the receiver queues
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*/
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sscop_rcvr_drain(sop);
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/*
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* Reset transmit variables
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*/
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SEQ_SET(sop->so_rcvnext, 0);
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SEQ_SET(sop->so_rcvhigh, 0);
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SEQ_SET(sop->so_rcvmax, sop->so_parm.sp_rcvwin);
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return;
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}
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/*
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* Clear connection's connection data
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*
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* Arguments:
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* sop pointer to sscop connection 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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qsaal1_clear_connection(sop)
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struct sscop *sop;
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{
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/*
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* Can we clear transmit buffers ??
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*/
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if ((sop->so_flags & SOF_NOCLRBUF) == 0) {
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/*
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* Yes, drain the transmission queues
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*/
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sscop_xmit_drain(sop);
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}
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/*
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* Clear service required flag
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*/
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sop->so_flags &= ~SOF_XMITSRVC;
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/*
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* Drain receive queue buffers
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*/
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sscop_rcvr_drain(sop);
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return;
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}
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