448 lines
7.4 KiB
C
448 lines
7.4 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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* ATM Forum UNI Support
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* ---------------------
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*
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* SSCOP Common - Process AA-signals (SAP_SSCOP)
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*
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*/
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#include <netatm/kern_include.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_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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* SSCOP_ESTABLISH_REQ / SOS_IDLE Command Processor
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*
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* Arguments:
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* sop pointer to sscop connection block
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* arg1 pointer to buffer containing SSCOP-UU data
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* arg2 buffer release parameter
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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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sscop_estreq_idle(sop, arg1, arg2)
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struct sscop *sop;
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int arg1;
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int arg2;
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{
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/*
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* We don't support SSCOP-UU data
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*/
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if (arg1 != SSCOP_UU_NULL)
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KB_FREEALL((KBuffer *)arg1);
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/*
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* We currently only support BR=YES
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*/
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if (arg2 != SSCOP_BR_YES) {
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sscop_abort(sop, "sscop: BR != YES\n");
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return;
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}
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/*
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* Initialize receiver window
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*/
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SEQ_SET(sop->so_rcvmax, sop->so_parm.sp_rcvwin);
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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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SEQ_INCR(sop->so_sendconn, 1);
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(void) sscop_send_bgn(sop, SSCOP_SOURCE_USER);
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/*
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* Reset transmitter state
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*/
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if (sop->so_vers == SSCOP_VERS_Q2110)
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q2110_clear_xmit(sop);
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else
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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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* SSCOP_ESTABLISH_RSP / SOS_INCONN Command Processor
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*
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* Arguments:
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* sop pointer to sscop connection block
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* arg1 pointer to buffer containing SSCOP-UU data
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* arg2 buffer release parameter
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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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sscop_estrsp_inconn(sop, arg1, arg2)
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struct sscop *sop;
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int arg1;
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int arg2;
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{
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/*
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* We don't support SSCOP-UU data
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*/
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if (arg1 != SSCOP_UU_NULL)
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KB_FREEALL((KBuffer *)arg1);
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/*
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* We currently only support BR=YES
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*/
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if (arg2 != SSCOP_BR_YES) {
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sscop_abort(sop, "sscop: BR != YES\n");
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return;
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}
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if (sop->so_vers == SSCOP_VERS_Q2110) {
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/*
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* Clear transmitter buffers
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*/
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q2110_clear_xmit(sop);
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/*
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* Initialize state variables
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*/
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SEQ_SET(sop->so_rcvmax, sop->so_parm.sp_rcvwin);
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q2110_init_state(sop);
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} else {
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/*
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* Reset transmitter state
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*/
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qsaal1_reset_xmit(sop);
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}
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/*
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* Send BGAK PDU
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*/
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(void) sscop_send_bgak(sop);
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/*
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* Start polling timer
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*/
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sop->so_timer[SSCOP_T_POLL] = sop->so_parm.sp_timepoll;
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/*
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* Start lost poll/stat timer
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*/
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sop->so_timer[SSCOP_T_NORESP] = sop->so_parm.sp_timeresp;
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/*
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* OK, we're ready for data
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*/
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sop->so_state = SOS_READY;
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/*
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* See if transmit queues need servicing
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*/
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if (sop->so_flags & SOF_XMITSRVC)
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sscop_service_xmit(sop);
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return;
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}
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/*
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* SSCOP_RELEASE_REQ / SOS_OUTCONN Command Processor
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*
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* Arguments:
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* sop pointer to sscop connection block
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* arg1 pointer to buffer containing SSCOP-UU data
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* arg2 unused
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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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sscop_relreq_outconn(sop, arg1, arg2)
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struct sscop *sop;
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int arg1;
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int arg2;
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{
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/*
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* We don't support SSCOP-UU data
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*/
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if (arg1 != SSCOP_UU_NULL)
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KB_FREEALL((KBuffer *)arg1);
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/*
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* Stop retransmit timer
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*/
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sop->so_timer[SSCOP_T_CC] = 0;
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/*
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* Clear reestablishment flag
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*/
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sop->so_flags &= ~SOF_REESTAB;
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/*
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* Send first END PDU
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*/
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sop->so_connctl = 1;
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(void) sscop_send_end(sop, SSCOP_SOURCE_USER);
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if (sop->so_vers == SSCOP_VERS_QSAAL)
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/*
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* Clear connection data
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*/
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qsaal1_clear_connection(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 ENDAK
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*/
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sop->so_state = SOS_OUTDISC;
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return;
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}
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/*
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* SSCOP_RELEASE_REQ / SOS_INCONN Command Processor
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*
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* Arguments:
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* sop pointer to sscop connection block
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* arg1 pointer to buffer containing SSCOP-UU data
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* arg2 unused
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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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sscop_relreq_inconn(sop, arg1, arg2)
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struct sscop *sop;
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int arg1;
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int arg2;
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{
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/*
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* We don't support SSCOP-UU data
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*/
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if (arg1 != SSCOP_UU_NULL)
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KB_FREEALL((KBuffer *)arg1);
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/*
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* Return a BGREJ PDU
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*/
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(void) sscop_send_bgrej(sop);
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/*
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* Back to IDLE state
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*/
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sop->so_state = SOS_IDLE;
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return;
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}
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/*
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* SSCOP_RELEASE_REQ / SOS_READY Command Processor
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*
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* Arguments:
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* sop pointer to sscop connection block
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* arg1 pointer to buffer containing SSCOP-UU data
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* arg2 unused
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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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sscop_relreq_ready(sop, arg1, arg2)
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struct sscop *sop;
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int arg1;
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int arg2;
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{
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/*
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* We don't support SSCOP-UU data
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*/
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if (arg1 != SSCOP_UU_NULL)
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KB_FREEALL((KBuffer *)arg1);
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/*
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* Stop data transfer 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_timer[SSCOP_T_IDLE] = 0;
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sop->so_flags &= ~SOF_KEEPALIVE;
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/*
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* Send first END PDU
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*/
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sop->so_connctl = 1;
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(void) sscop_send_end(sop, SSCOP_SOURCE_USER);
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if (sop->so_vers == SSCOP_VERS_Q2110) {
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/*
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* Clear out appropriate queues
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*/
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if (sop->so_state == SOS_READY)
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q2110_prep_retrieve(sop);
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else
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sscop_rcvr_drain(sop);
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} else {
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/*
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* Clear connection data
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*/
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qsaal1_clear_connection(sop);
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}
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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 ENDAK
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*/
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sop->so_state = SOS_OUTDISC;
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return;
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}
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/*
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* SSCOP_DATA_REQ / SOS_READY Command Processor
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*
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* Arguments:
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* sop pointer to sscop connection block
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* arg1 pointer to buffer containing assured user data
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* arg2 unused
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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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sscop_datreq_ready(sop, arg1, arg2)
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struct sscop *sop;
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int arg1;
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int arg2;
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{
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KBuffer *m = (KBuffer *)arg1;
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/*
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* We must have a buffer (even if it contains no data)
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*/
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if (m == NULL) {
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sscop_abort(sop, "sscop_datreq_ready: no buffer\n");
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return;
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}
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/*
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* Place data at end of transmission queue
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*/
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KB_QNEXT(m) = NULL;
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if (sop->so_xmit_hd == NULL)
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sop->so_xmit_hd = m;
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else
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KB_QNEXT(sop->so_xmit_tl) = m;
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sop->so_xmit_tl = m;
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/*
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* Service the transmit queues
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*/
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sscop_service_xmit(sop);
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return;
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}
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/*
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* SSCOP_UNITDATA_REQ / SOS_* Command Processor
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*
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* Arguments:
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* sop pointer to sscop connection block
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* arg1 pointer to buffer containing unassured user data
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* arg2 unused
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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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sscop_udtreq_all(sop, arg1, arg2)
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struct sscop *sop;
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int arg1;
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int arg2;
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{
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KBuffer *m = (KBuffer *)arg1;
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/*
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* We must have a buffer (even if it contains no data)
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*/
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if (m == NULL) {
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sscop_abort(sop, "sscop_udtreq_all: no buffer\n");
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return;
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}
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/*
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* Send the data in a UD PDU
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*/
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(void) sscop_send_ud(sop, m);
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return;
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}
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