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freebsd-dev/sys/netatm/uni/sscf_uni_lower.c

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/*-
* ===================================
* 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
* ---------------------
*
* SSCF UNI - SSCF_UNI SAP interface processing
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/syslog.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_sap.h>
#include <netatm/atm_cm.h>
#include <netatm/atm_if.h>
#include <netatm/atm_stack.h>
#include <netatm/atm_pcb.h>
#include <netatm/atm_var.h>
#include <netatm/uni/uni.h>
#include <netatm/uni/sscop.h>
#include <netatm/uni/sscf_uni.h>
#include <netatm/uni/sscf_uni_var.h>
#include <vm/uma.h>
extern uma_zone_t sscf_uni_zone;
/*
* Local variables
*/
static struct sscop_parms sscf_uni_sscop_parms = {
4096, /* sp_maxinfo */
4096, /* sp_maxuu */
4, /* sp_maxcc */
25, /* sp_maxpd */
1 * ATM_HZ, /* sp_timecc */
2 * ATM_HZ, /* sp_timekeep */
7 * ATM_HZ, /* sp_timeresp */
1 * ATM_HZ, /* sp_timepoll */
15 * ATM_HZ, /* sp_timeidle */
80 /* sp_rcvwin */
};
/*
* SSCF_UNI Lower Stack Command Handler
*
* This function will receive all of the stack commands issued from the
* layer above SSCF UNI (ie. Q.2931).
*
* Arguments:
* cmd stack command code
* tok session token
* arg1 command specific argument
* arg2 command specific argument
*
* Returns:
* none
*
*/
void
sscf_uni_lower(cmd, tok, arg1, arg2)
int cmd;
void *tok;
intptr_t arg1;
intptr_t arg2;
{
struct univcc *uvp = (struct univcc *)tok;
Atm_connvc *cvp = uvp->uv_connvc;
enum sscop_vers vers;
int err;
ATM_DEBUG5("sscf_uni_lower: cmd=0x%x, uvp=%p, ustate=%d, arg1=%p, arg2=%p\n",
cmd, uvp, uvp->uv_ustate, (void *)arg1, (void *)arg2);
switch (cmd) {
case SSCF_UNI_INIT:
/*
* Validate state
*/
if (uvp->uv_ustate != UVU_INST) {
log(LOG_ERR, "sscf_uni_lower: SSCF_INIT in ustate=%d\n",
uvp->uv_ustate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
break;
}
/*
* Validate UNI version
*/
if ((enum uni_vers)arg1 == UNI_VERS_3_0)
vers = SSCOP_VERS_QSAAL;
else if ((enum uni_vers)arg1 == UNI_VERS_3_1)
vers = SSCOP_VERS_Q2110;
else {
sscf_uni_abort(uvp, "sscf_uni: bad version\n");
break;
}
uvp->uv_vers = (enum uni_vers)arg1;
/*
* Make ourselves ready and pass on the INIT
*/
uvp->uv_ustate = UVU_RELEASED;
uvp->uv_lstate = UVL_IDLE;
STACK_CALL(SSCOP_INIT, uvp->uv_lower, uvp->uv_tokl, cvp,
(int)vers, (int)&sscf_uni_sscop_parms, err);
if (err) {
/*
* Should never happen
*/
sscf_uni_abort(uvp, "sscf_uni: INIT failure\n");
}
break;
case SSCF_UNI_TERM:
/*
* Set termination states
*/
uvp->uv_ustate = UVU_TERM;
uvp->uv_lstate = UVL_TERM;
/*
* Pass the TERM down the stack
*/
STACK_CALL(SSCOP_TERM, uvp->uv_lower, uvp->uv_tokl, cvp,
0, 0, err);
if (err) {
/*
* Should never happen
*/
sscf_uni_abort(uvp, "sscf_uni: TERM failure\n");
return;
}
uma_zfree(sscf_uni_zone, uvp);
sscf_uni_vccnt--;
break;
case SSCF_UNI_ESTABLISH_REQ:
/*
* Validation based on user state
*/
switch (uvp->uv_ustate) {
case UVU_RELEASED:
case UVU_PRELEASE:
/*
* Establishing a new connection
*/
uvp->uv_ustate = UVU_PACTIVE;
uvp->uv_lstate = UVL_OUTCONN;
STACK_CALL(SSCOP_ESTABLISH_REQ, uvp->uv_lower,
uvp->uv_tokl, cvp,
SSCOP_UU_NULL, SSCOP_BR_YES, err);
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVU_ACTIVE:
/*
* Resynchronizing a connection
*/
uvp->uv_ustate = UVU_PACTIVE;
if (uvp->uv_vers == UNI_VERS_3_0) {
uvp->uv_lstate = UVL_OUTCONN;
STACK_CALL(SSCOP_ESTABLISH_REQ, uvp->uv_lower,
uvp->uv_tokl, cvp,
SSCOP_UU_NULL, SSCOP_BR_YES, err);
} else {
uvp->uv_lstate = UVL_OUTRESYN;
STACK_CALL(SSCOP_RESYNC_REQ, uvp->uv_lower,
uvp->uv_tokl, cvp,
SSCOP_UU_NULL, 0, err);
}
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVU_TERM:
/* Ignore */
break;
case UVU_INST:
case UVU_PACTIVE:
default:
log(LOG_ERR, "sscf_uni_lower: cmd=0x%x, ustate=%d\n",
cmd, uvp->uv_ustate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCF_UNI_RELEASE_REQ:
/*
* Validate re-establishment parameter
*/
switch (arg1) {
case SSCF_UNI_ESTIND_YES:
uvp->uv_flags &= ~UVF_NOESTIND;
break;
case SSCF_UNI_ESTIND_NO:
uvp->uv_flags |= UVF_NOESTIND;
break;
default:
sscf_uni_abort(uvp, "sscf_uni: bad estind value\n");
return;
}
/*
* Validation based on user state
*/
switch (uvp->uv_ustate) {
case UVU_RELEASED:
/*
* Releasing a non-existant connection
*/
STACK_CALL(SSCF_UNI_RELEASE_CNF, uvp->uv_upper,
uvp->uv_toku, cvp,
0, 0, err);
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVU_PACTIVE:
case UVU_ACTIVE:
/*
* Releasing a connection
*/
uvp->uv_ustate = UVU_PRELEASE;
uvp->uv_lstate = UVL_OUTDISC;
STACK_CALL(SSCOP_RELEASE_REQ, uvp->uv_lower,
uvp->uv_tokl, cvp,
SSCOP_UU_NULL, 0, err);
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVU_TERM:
/* Ignore */
break;
case UVU_INST:
case UVU_PRELEASE:
default:
log(LOG_ERR, "sscf_uni_lower: cmd=0x%x, ustate=%d\n",
cmd, uvp->uv_ustate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCF_UNI_DATA_REQ:
#ifdef notdef
sscf_uni_pdu_print(uvp, (KBuffer *)arg1, "DATA_REQ");
#endif
/*
* Validation based on user state
*/
switch (uvp->uv_ustate) {
case UVU_ACTIVE:
/*
* Send assured data on connection
*/
STACK_CALL(SSCOP_DATA_REQ, uvp->uv_lower,
uvp->uv_tokl, cvp,
arg1, 0, err);
if (err) {
KB_FREEALL((KBuffer *)arg1);
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVU_RELEASED:
case UVU_TERM:
/*
* Release supplied buffers and ignore
*/
KB_FREEALL((KBuffer *)arg1);
break;
case UVU_INST:
case UVU_PACTIVE:
case UVU_PRELEASE:
default:
KB_FREEALL((KBuffer *)arg1);
log(LOG_ERR, "sscf_uni_lower: cmd=0x%x, ustate=%d\n",
cmd, uvp->uv_ustate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCF_UNI_UNITDATA_REQ:
#ifdef notdef
sscf_uni_pdu_print(uvp, (KBuffer *)arg1, "UNITDATA_REQ");
#endif
/*
* Validation based on user state
*/
switch (uvp->uv_ustate) {
case UVU_RELEASED:
case UVU_PACTIVE:
case UVU_PRELEASE:
case UVU_ACTIVE:
/*
* Send unassured data on connection
*/
STACK_CALL(SSCOP_UNITDATA_REQ, uvp->uv_lower,
uvp->uv_tokl, cvp,
arg1, 0, err);
if (err) {
KB_FREEALL((KBuffer *)arg1);
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVU_TERM:
/*
* Release supplied buffers and ignore
*/
KB_FREEALL((KBuffer *)arg1);
break;
case UVU_INST:
default:
KB_FREEALL((KBuffer *)arg1);
log(LOG_ERR, "sscf_uni_lower: cmd=0x%x, ustate=%d\n",
cmd, uvp->uv_ustate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
default:
log(LOG_ERR, "sscf_uni_lower: unknown cmd 0x%x, uvp=%p\n",
cmd, uvp);
}
return;
}
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