457 lines
7.6 KiB
C
457 lines
7.6 KiB
C
/*
|
|
*
|
|
* ===================================
|
|
* 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
|
|
* ---------------------
|
|
*
|
|
* SSCOP Common - Process AA-signals (SAP_SSCOP)
|
|
*
|
|
*/
|
|
|
|
#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
|
|
|
|
|
|
/*
|
|
* SSCOP_ESTABLISH_REQ / SOS_IDLE Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 pointer to buffer containing SSCOP-UU data
|
|
* arg2 buffer release parameter
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
sscop_estreq_idle(sop, arg1, arg2)
|
|
struct sscop *sop;
|
|
int arg1;
|
|
int arg2;
|
|
{
|
|
|
|
/*
|
|
* We don't support SSCOP-UU data
|
|
*/
|
|
if (arg1 != SSCOP_UU_NULL)
|
|
KB_FREEALL((KBuffer *)arg1);
|
|
|
|
/*
|
|
* We currently only support BR=YES
|
|
*/
|
|
if (arg2 != SSCOP_BR_YES) {
|
|
sscop_abort(sop, "sscop: BR != YES\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Initialize receiver window
|
|
*/
|
|
SEQ_SET(sop->so_rcvmax, sop->so_parm.sp_rcvwin);
|
|
|
|
/*
|
|
* Send first BGN PDU
|
|
*/
|
|
sop->so_connctl = 1;
|
|
SEQ_INCR(sop->so_sendconn, 1);
|
|
(void) sscop_send_bgn(sop, SSCOP_SOURCE_USER);
|
|
|
|
/*
|
|
* Reset transmitter state
|
|
*/
|
|
if (sop->so_vers == SSCOP_VERS_Q2110)
|
|
q2110_clear_xmit(sop);
|
|
else
|
|
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;
|
|
}
|
|
|
|
|
|
/*
|
|
* SSCOP_ESTABLISH_RSP / SOS_INCONN Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 pointer to buffer containing SSCOP-UU data
|
|
* arg2 buffer release parameter
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
sscop_estrsp_inconn(sop, arg1, arg2)
|
|
struct sscop *sop;
|
|
int arg1;
|
|
int arg2;
|
|
{
|
|
|
|
/*
|
|
* We don't support SSCOP-UU data
|
|
*/
|
|
if (arg1 != SSCOP_UU_NULL)
|
|
KB_FREEALL((KBuffer *)arg1);
|
|
|
|
/*
|
|
* We currently only support BR=YES
|
|
*/
|
|
if (arg2 != SSCOP_BR_YES) {
|
|
sscop_abort(sop, "sscop: BR != YES\n");
|
|
return;
|
|
}
|
|
|
|
if (sop->so_vers == SSCOP_VERS_Q2110) {
|
|
/*
|
|
* Clear transmitter buffers
|
|
*/
|
|
q2110_clear_xmit(sop);
|
|
|
|
/*
|
|
* Initialize state variables
|
|
*/
|
|
SEQ_SET(sop->so_rcvmax, sop->so_parm.sp_rcvwin);
|
|
q2110_init_state(sop);
|
|
} else {
|
|
/*
|
|
* Reset transmitter state
|
|
*/
|
|
qsaal1_reset_xmit(sop);
|
|
}
|
|
|
|
/*
|
|
* Send BGAK PDU
|
|
*/
|
|
(void) sscop_send_bgak(sop);
|
|
|
|
/*
|
|
* Start polling timer
|
|
*/
|
|
sop->so_timer[SSCOP_T_POLL] = sop->so_parm.sp_timepoll;
|
|
|
|
/*
|
|
* Start lost poll/stat timer
|
|
*/
|
|
sop->so_timer[SSCOP_T_NORESP] = sop->so_parm.sp_timeresp;
|
|
|
|
/*
|
|
* OK, we're ready for data
|
|
*/
|
|
sop->so_state = SOS_READY;
|
|
|
|
/*
|
|
* See if transmit queues need servicing
|
|
*/
|
|
if (sop->so_flags & SOF_XMITSRVC)
|
|
sscop_service_xmit(sop);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* SSCOP_RELEASE_REQ / SOS_OUTCONN Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 pointer to buffer containing SSCOP-UU data
|
|
* arg2 unused
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
sscop_relreq_outconn(sop, arg1, arg2)
|
|
struct sscop *sop;
|
|
int arg1;
|
|
int arg2;
|
|
{
|
|
|
|
/*
|
|
* We don't support SSCOP-UU data
|
|
*/
|
|
if (arg1 != SSCOP_UU_NULL)
|
|
KB_FREEALL((KBuffer *)arg1);
|
|
|
|
/*
|
|
* Stop retransmit timer
|
|
*/
|
|
sop->so_timer[SSCOP_T_CC] = 0;
|
|
|
|
/*
|
|
* Clear reestablishment flag
|
|
*/
|
|
sop->so_flags &= ~SOF_REESTAB;
|
|
|
|
/*
|
|
* Send first END PDU
|
|
*/
|
|
sop->so_connctl = 1;
|
|
(void) sscop_send_end(sop, SSCOP_SOURCE_USER);
|
|
|
|
if (sop->so_vers == SSCOP_VERS_QSAAL)
|
|
/*
|
|
* Clear connection data
|
|
*/
|
|
qsaal1_clear_connection(sop);
|
|
|
|
/*
|
|
* Set retransmit timer
|
|
*/
|
|
sop->so_timer[SSCOP_T_CC] = sop->so_parm.sp_timecc;
|
|
|
|
/*
|
|
* Wait for ENDAK
|
|
*/
|
|
sop->so_state = SOS_OUTDISC;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* SSCOP_RELEASE_REQ / SOS_INCONN Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 pointer to buffer containing SSCOP-UU data
|
|
* arg2 unused
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
sscop_relreq_inconn(sop, arg1, arg2)
|
|
struct sscop *sop;
|
|
int arg1;
|
|
int arg2;
|
|
{
|
|
|
|
/*
|
|
* We don't support SSCOP-UU data
|
|
*/
|
|
if (arg1 != SSCOP_UU_NULL)
|
|
KB_FREEALL((KBuffer *)arg1);
|
|
|
|
/*
|
|
* Return a BGREJ PDU
|
|
*/
|
|
(void) sscop_send_bgrej(sop);
|
|
|
|
/*
|
|
* Back to IDLE state
|
|
*/
|
|
sop->so_state = SOS_IDLE;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* SSCOP_RELEASE_REQ / SOS_READY Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 pointer to buffer containing SSCOP-UU data
|
|
* arg2 unused
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
sscop_relreq_ready(sop, arg1, arg2)
|
|
struct sscop *sop;
|
|
int arg1;
|
|
int arg2;
|
|
{
|
|
|
|
/*
|
|
* We don't support SSCOP-UU data
|
|
*/
|
|
if (arg1 != SSCOP_UU_NULL)
|
|
KB_FREEALL((KBuffer *)arg1);
|
|
|
|
/*
|
|
* Stop data transfer timers
|
|
*/
|
|
sop->so_timer[SSCOP_T_POLL] = 0;
|
|
sop->so_timer[SSCOP_T_NORESP] = 0;
|
|
sop->so_timer[SSCOP_T_IDLE] = 0;
|
|
sop->so_flags &= ~SOF_KEEPALIVE;
|
|
|
|
/*
|
|
* Send first END PDU
|
|
*/
|
|
sop->so_connctl = 1;
|
|
(void) sscop_send_end(sop, SSCOP_SOURCE_USER);
|
|
|
|
if (sop->so_vers == SSCOP_VERS_Q2110) {
|
|
/*
|
|
* Clear out appropriate queues
|
|
*/
|
|
if (sop->so_state == SOS_READY)
|
|
q2110_prep_retrieve(sop);
|
|
else
|
|
sscop_rcvr_drain(sop);
|
|
} else {
|
|
/*
|
|
* Clear connection data
|
|
*/
|
|
qsaal1_clear_connection(sop);
|
|
}
|
|
|
|
/*
|
|
* Set retransmit timer
|
|
*/
|
|
sop->so_timer[SSCOP_T_CC] = sop->so_parm.sp_timecc;
|
|
|
|
/*
|
|
* Wait for ENDAK
|
|
*/
|
|
sop->so_state = SOS_OUTDISC;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* SSCOP_DATA_REQ / SOS_READY Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 pointer to buffer containing assured user data
|
|
* arg2 unused
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
sscop_datreq_ready(sop, arg1, arg2)
|
|
struct sscop *sop;
|
|
int arg1;
|
|
int arg2;
|
|
{
|
|
KBuffer *m = (KBuffer *)arg1;
|
|
|
|
/*
|
|
* We must have a buffer (even if it contains no data)
|
|
*/
|
|
if (m == NULL) {
|
|
sscop_abort(sop, "sscop_datreq_ready: no buffer\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Place data at end of transmission queue
|
|
*/
|
|
KB_QNEXT(m) = NULL;
|
|
if (sop->so_xmit_hd == NULL)
|
|
sop->so_xmit_hd = m;
|
|
else
|
|
KB_QNEXT(sop->so_xmit_tl) = m;
|
|
sop->so_xmit_tl = m;
|
|
|
|
/*
|
|
* Service the transmit queues
|
|
*/
|
|
sscop_service_xmit(sop);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* SSCOP_UNITDATA_REQ / SOS_* Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 pointer to buffer containing unassured user data
|
|
* arg2 unused
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
sscop_udtreq_all(sop, arg1, arg2)
|
|
struct sscop *sop;
|
|
int arg1;
|
|
int arg2;
|
|
{
|
|
KBuffer *m = (KBuffer *)arg1;
|
|
|
|
/*
|
|
* We must have a buffer (even if it contains no data)
|
|
*/
|
|
if (m == NULL) {
|
|
sscop_abort(sop, "sscop_udtreq_all: no buffer\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Send the data in a UD PDU
|
|
*/
|
|
(void) sscop_send_ud(sop, m);
|
|
|
|
return;
|
|
}
|
|
|