519 lines
11 KiB
C
519 lines
11 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.
|
|
*/
|
|
|
|
/*
|
|
* ATM Forum UNI Support
|
|
* ---------------------
|
|
*
|
|
* ITU-T Q.SAAL1 - Process AA-signals (SAP_SSCOP)
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#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>
|
|
|
|
/*
|
|
* Local functions
|
|
*/
|
|
static void sscop_estreq_ready(struct sscop *, intptr_t, intptr_t);
|
|
static void sscop_datreq_outconn(struct sscop *, intptr_t, intptr_t);
|
|
static void sscop_resreq_ready(struct sscop *, intptr_t, intptr_t);
|
|
static void sscop_resrsp_inresyn(struct sscop *, intptr_t, intptr_t);
|
|
static void sscop_resrsp_conresyn(struct sscop *, intptr_t, intptr_t);
|
|
|
|
|
|
/*
|
|
* Stack command state lookup tables
|
|
*/
|
|
/* SSCOP_INIT */
|
|
static void (*sscop_init_tab[SOS_NUMSTATES])
|
|
(struct sscop *, intptr_t, intptr_t) = {
|
|
sscop_init_inst, /* SOS_INST */
|
|
NULL, /* SOS_IDLE */
|
|
NULL, /* SOS_OUTCONN */
|
|
NULL, /* SOS_INCONN */
|
|
NULL, /* SOS_OUTDISC */
|
|
NULL, /* SOS_OUTRESYN */
|
|
NULL, /* SOS_INRESYN */
|
|
NULL, /* SOS_CONRESYN */
|
|
NULL, /* invalid */
|
|
NULL, /* invalid */
|
|
NULL, /* SOS_READY */
|
|
NULL /* SOS_TERM */
|
|
};
|
|
|
|
/* SSCOP_TERM */
|
|
static void (*sscop_term_tab[SOS_NUMSTATES])
|
|
(struct sscop *, intptr_t, intptr_t) = {
|
|
sscop_term_all, /* SOS_INST */
|
|
sscop_term_all, /* SOS_IDLE */
|
|
sscop_term_all, /* SOS_OUTCONN */
|
|
sscop_term_all, /* SOS_INCONN */
|
|
sscop_term_all, /* SOS_OUTDISC */
|
|
sscop_term_all, /* SOS_OUTRESYN */
|
|
sscop_term_all, /* SOS_INRESYN */
|
|
sscop_term_all, /* SOS_CONRESYN */
|
|
NULL, /* invalid */
|
|
NULL, /* invalid */
|
|
sscop_term_all, /* SOS_READY */
|
|
sscop_term_all /* SOS_TERM */
|
|
};
|
|
|
|
/* SSCOP_ESTABLISH_REQ */
|
|
static void (*sscop_estreq_tab[SOS_NUMSTATES])
|
|
(struct sscop *, intptr_t, intptr_t) = {
|
|
NULL, /* SOS_INST */
|
|
sscop_estreq_idle, /* SOS_IDLE */
|
|
NULL, /* SOS_OUTCONN */
|
|
NULL, /* SOS_INCONN */
|
|
sscop_estreq_ready, /* SOS_OUTDISC */
|
|
sscop_estreq_ready, /* SOS_OUTRESYN */
|
|
sscop_estreq_ready, /* SOS_INRESYN */
|
|
sscop_estreq_ready, /* SOS_CONRESYN */
|
|
NULL, /* invalid */
|
|
NULL, /* invalid */
|
|
sscop_estreq_ready, /* SOS_READY */
|
|
sscop_aa_noop_1 /* SOS_TERM */
|
|
};
|
|
|
|
/* SSCOP_ESTABLISH_RSP */
|
|
static void (*sscop_estrsp_tab[SOS_NUMSTATES])
|
|
(struct sscop *, intptr_t, intptr_t) = {
|
|
NULL, /* SOS_INST */
|
|
NULL, /* SOS_IDLE */
|
|
NULL, /* SOS_OUTCONN */
|
|
sscop_estrsp_inconn, /* SOS_INCONN */
|
|
NULL, /* SOS_OUTDISC */
|
|
NULL, /* SOS_OUTRESYN */
|
|
NULL, /* SOS_INRESYN */
|
|
NULL, /* SOS_CONRESYN */
|
|
NULL, /* invalid */
|
|
NULL, /* invalid */
|
|
sscop_aa_noop_1, /* SOS_READY */
|
|
sscop_aa_noop_1 /* SOS_TERM */
|
|
};
|
|
|
|
/* SSCOP_RELEASE_REQ */
|
|
static void (*sscop_relreq_tab[SOS_NUMSTATES])
|
|
(struct sscop *, intptr_t, intptr_t) = {
|
|
NULL, /* SOS_INST */
|
|
NULL, /* SOS_IDLE */
|
|
sscop_relreq_outconn, /* SOS_OUTCONN */
|
|
sscop_relreq_inconn, /* SOS_INCONN */
|
|
NULL, /* SOS_OUTDISC */
|
|
sscop_relreq_outconn, /* SOS_OUTRESYN */
|
|
sscop_relreq_ready, /* SOS_INRESYN */
|
|
sscop_relreq_outconn, /* SOS_CONRESYN */
|
|
NULL, /* invalid */
|
|
NULL, /* invalid */
|
|
sscop_relreq_ready, /* SOS_READY */
|
|
sscop_aa_noop_1 /* SOS_TERM */
|
|
};
|
|
|
|
/* SSCOP_DATA_REQ */
|
|
static void (*sscop_datreq_tab[SOS_NUMSTATES])
|
|
(struct sscop *, intptr_t, intptr_t) = {
|
|
NULL, /* SOS_INST */
|
|
NULL, /* SOS_IDLE */
|
|
sscop_datreq_outconn, /* SOS_OUTCONN */
|
|
NULL, /* SOS_INCONN */
|
|
NULL, /* SOS_OUTDISC */
|
|
NULL, /* SOS_OUTRESYN */
|
|
sscop_datreq_ready, /* SOS_INRESYN */
|
|
NULL, /* SOS_CONRESYN */
|
|
NULL, /* invalid */
|
|
NULL, /* invalid */
|
|
sscop_datreq_ready, /* SOS_READY */
|
|
sscop_aa_noop_1 /* SOS_TERM */
|
|
};
|
|
|
|
/* SSCOP_RESYNC_REQ */
|
|
static void (*sscop_resreq_tab[SOS_NUMSTATES])
|
|
(struct sscop *, intptr_t, intptr_t) = {
|
|
NULL, /* SOS_INST */
|
|
NULL, /* SOS_IDLE */
|
|
NULL, /* SOS_OUTCONN */
|
|
NULL, /* SOS_INCONN */
|
|
NULL, /* SOS_OUTDISC */
|
|
NULL, /* SOS_OUTRESYN */
|
|
NULL, /* SOS_INRESYN */
|
|
NULL, /* SOS_CONRESYN */
|
|
NULL, /* invalid */
|
|
NULL, /* invalid */
|
|
sscop_resreq_ready, /* SOS_READY */
|
|
sscop_aa_noop_1 /* SOS_TERM */
|
|
};
|
|
|
|
/* SSCOP_RESYNC_RSP */
|
|
static void (*sscop_resrsp_tab[SOS_NUMSTATES])
|
|
(struct sscop *, intptr_t, intptr_t) = {
|
|
NULL, /* SOS_INST */
|
|
NULL, /* SOS_IDLE */
|
|
NULL, /* SOS_OUTCONN */
|
|
NULL, /* SOS_INCONN */
|
|
NULL, /* SOS_OUTDISC */
|
|
NULL, /* SOS_OUTRESYN */
|
|
sscop_resrsp_inresyn, /* SOS_INRESYN */
|
|
sscop_resrsp_conresyn, /* SOS_CONRESYN */
|
|
NULL, /* invalid */
|
|
NULL, /* invalid */
|
|
NULL, /* SOS_READY */
|
|
sscop_aa_noop_0 /* SOS_TERM */
|
|
};
|
|
|
|
/* SSCOP_UNITDATA_REQ */
|
|
static void (*sscop_udtreq_tab[SOS_NUMSTATES])
|
|
(struct sscop *, intptr_t, intptr_t) = {
|
|
NULL, /* SOS_INST */
|
|
sscop_udtreq_all, /* SOS_IDLE */
|
|
sscop_udtreq_all, /* SOS_OUTCONN */
|
|
sscop_udtreq_all, /* SOS_INCONN */
|
|
sscop_udtreq_all, /* SOS_OUTDISC */
|
|
sscop_udtreq_all, /* SOS_OUTRESYN */
|
|
sscop_udtreq_all, /* SOS_INRESYN */
|
|
sscop_udtreq_all, /* SOS_CONRESYN */
|
|
NULL, /* invalid */
|
|
NULL, /* invalid */
|
|
sscop_udtreq_all, /* SOS_READY */
|
|
sscop_aa_noop_1 /* SOS_TERM */
|
|
};
|
|
|
|
|
|
/*
|
|
* Stack command lookup table
|
|
*/
|
|
void (*(*sscop_qsaal_aatab[SSCOP_CMD_SIZE]))
|
|
(struct sscop *, intptr_t, intptr_t) = {
|
|
NULL,
|
|
sscop_init_tab,
|
|
sscop_term_tab,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
sscop_estreq_tab,
|
|
NULL,
|
|
sscop_estrsp_tab,
|
|
NULL,
|
|
sscop_relreq_tab,
|
|
NULL,
|
|
NULL,
|
|
sscop_datreq_tab,
|
|
NULL,
|
|
sscop_resreq_tab,
|
|
NULL,
|
|
sscop_resrsp_tab,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
sscop_udtreq_tab,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
|
|
/*
|
|
* SSCOP_ESTABLISH_REQ / SOS_READY Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 pointer to buffer containing SSCOP-UU data
|
|
* arg2 buffer release parameter
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
static void
|
|
sscop_estreq_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);
|
|
|
|
/*
|
|
* We currently only support BR=YES
|
|
*/
|
|
if (arg2 != SSCOP_BR_YES) {
|
|
sscop_abort(sop, "sscop: BR != YES\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Stop poll timer
|
|
*/
|
|
sop->so_timer[SSCOP_T_POLL] = 0;
|
|
sop->so_flags &= ~SOF_KEEPALIVE;
|
|
|
|
/*
|
|
* Stop lost poll/stat timer
|
|
*/
|
|
sop->so_timer[SSCOP_T_NORESP] = 0;
|
|
|
|
/*
|
|
* Initialize receiver window
|
|
*/
|
|
SEQ_SET(sop->so_rcvmax, sop->so_parm.sp_rcvwin);
|
|
|
|
/*
|
|
* Send first BGN PDU
|
|
*/
|
|
sop->so_connctl = 1;
|
|
(void) sscop_send_bgn(sop, SSCOP_SOURCE_USER);
|
|
|
|
/*
|
|
* Reset transmitter state
|
|
*/
|
|
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_DATA_REQ / SOS_OUTCONN Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 pointer to buffer containing assured user data
|
|
* arg2 unused
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
static void
|
|
sscop_datreq_outconn(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_outconn: no buffer\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Only accept data here if in the middle of an SSCOP-initiated
|
|
* session reestablishment
|
|
*/
|
|
if ((sop->so_flags & SOF_REESTAB) == 0) {
|
|
KB_FREEALL(m);
|
|
sscop_abort(sop, "sscop_datreq_outconn: data not allowed\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;
|
|
|
|
/*
|
|
* Note that the transmit queues need to be serviced
|
|
*/
|
|
sop->so_flags |= SOF_XMITSRVC;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* SSCOP_RESYNC_REQ / SOS_READY Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 pointer to buffer containing SSCOP-UU data
|
|
* arg2 unused
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
static void
|
|
sscop_resreq_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 poll timer
|
|
*/
|
|
sop->so_timer[SSCOP_T_POLL] = 0;
|
|
sop->so_flags &= ~SOF_KEEPALIVE;
|
|
|
|
/*
|
|
* Stop lost poll/stat timer
|
|
*/
|
|
sop->so_timer[SSCOP_T_NORESP] = 0;
|
|
|
|
/*
|
|
* Send first RS PDU
|
|
*/
|
|
sop->so_connctl = 1;
|
|
(void) sscop_send_rs(sop);
|
|
|
|
/*
|
|
* Reset transmitter state
|
|
*/
|
|
qsaal1_reset_xmit(sop);
|
|
|
|
/*
|
|
* Set retransmit timer
|
|
*/
|
|
sop->so_timer[SSCOP_T_CC] = sop->so_parm.sp_timecc;
|
|
|
|
/*
|
|
* Wait for RSAK
|
|
*/
|
|
sop->so_state = SOS_OUTRESYN;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* SSCOP_RESYNC_RSP / SOS_INRESYN Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 unused
|
|
* arg2 unused
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
static void
|
|
sscop_resrsp_inresyn(sop, arg1, arg2)
|
|
struct sscop *sop;
|
|
intptr_t arg1;
|
|
intptr_t arg2;
|
|
{
|
|
|
|
/*
|
|
* Send RSAK PDU
|
|
*/
|
|
(void) sscop_send_rsak(sop);
|
|
|
|
/*
|
|
* Back to data transfer state
|
|
*/
|
|
sop->so_state = SOS_READY;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* SSCOP_RESYNC_RSP / SOS_CONRESYN Command Processor
|
|
*
|
|
* Arguments:
|
|
* sop pointer to sscop connection block
|
|
* arg1 unused
|
|
* arg2 unused
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
static void
|
|
sscop_resrsp_conresyn(sop, arg1, arg2)
|
|
struct sscop *sop;
|
|
intptr_t arg1;
|
|
intptr_t arg2;
|
|
{
|
|
|
|
/*
|
|
* Send RSAK PDU
|
|
*/
|
|
(void) sscop_send_rsak(sop);
|
|
|
|
/*
|
|
* Back to waiting for peer's RSAK
|
|
*/
|
|
sop->so_state = SOS_OUTRESYN;
|
|
|
|
return;
|
|
}
|
|
|