FreeBSD-5.3/sys/netatm/uni/sscop_sigaa.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.
*/
/*
* ATM Forum UNI Support
* ---------------------
*
* SSCOP Common - Process AA-signals (SAP_SSCOP)
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/sys/netatm/uni/sscop_sigaa.c,v 1.9 2003/06/11 07:22:30 obrien Exp $");
#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>
/*
* 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;
intptr_t arg1;
intptr_t 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;
intptr_t arg1;
intptr_t 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;
intptr_t arg1;
intptr_t 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;
intptr_t arg1;
intptr_t 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;
intptr_t arg1;
intptr_t 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;
intptr_t arg1;
intptr_t 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;
intptr_t arg1;
intptr_t 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;
}