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freebsd-dev/sys/netatm/uni/sscf_uni_upper.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 - SSCOP 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_var.h>
/*
* SSCF_UNI Upper Stack Command Handler
*
* This function will receive all of the stack commands issued from the
* layer below SSCF UNI (ie. SSCOP).
*
* Arguments:
* cmd stack command code
* tok session token
* arg1 command specific argument
* arg2 command specific argument
*
* Returns:
* none
*
*/
void
sscf_uni_upper(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;
int err;
ATM_DEBUG5("sscf_uni_upper: cmd=0x%x, uvp=%p, lstate=%d, arg1=%p, arg2=%p\n",
cmd, uvp, uvp->uv_lstate, (void *)arg1, (void *)arg2);
switch (cmd) {
case SSCOP_ESTABLISH_IND:
/*
* We don't support SSCOP User-to-User data, so just
* get rid of any supplied to us
*/
if (arg1 != SSCOP_UU_NULL)
KB_FREEALL((KBuffer *)arg1);
/*
* Validation based on sscop state
*/
switch (uvp->uv_lstate) {
case UVL_READY:
if (uvp->uv_vers != UNI_VERS_3_0) {
goto seqerr;
}
goto doestind;
case UVL_IDLE:
/*
* Incoming connection establishment request
*/
/*
* If user doesn't want any more incoming sessions
* accepted, then refuse request
*/
if (uvp->uv_flags & UVF_NOESTIND) {
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;
}
doestind:
/*
* Tell sscop we've accepted the new connection
*/
uvp->uv_lstate = UVL_READY;
STACK_CALL(SSCOP_ESTABLISH_RSP, 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;
}
/*
* Now notify the user of the new connection
*/
uvp->uv_ustate = UVU_ACTIVE;
STACK_CALL(SSCF_UNI_ESTABLISH_IND, uvp->uv_upper,
uvp->uv_toku, cvp,
SSCOP_UU_NULL, 0, err);
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVL_TERM:
/*
* Ignoring everything
*/
break;
case UVL_INST:
case UVL_OUTCONN:
case UVL_INCONN:
case UVL_OUTDISC:
case UVL_OUTRESYN:
case UVL_INRESYN:
case UVL_RECOVERY:
default:
seqerr:
log(LOG_ERR, "sscf_uni_upper: cmd=0x%x, lstate=%d\n",
cmd, uvp->uv_lstate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCOP_ESTABLISH_CNF:
/*
* We don't support SSCOP User-to-User data, so just
* get rid of any supplied to us
*/
if (arg1 != SSCOP_UU_NULL)
KB_FREEALL((KBuffer *)arg1);
/*
* Validation based on sscop state
*/
switch (uvp->uv_lstate) {
case UVL_OUTCONN:
/*
* Outgoing connection establishment completed
*/
/*
* Tell the user that the connection is established
*/
uvp->uv_ustate = UVU_ACTIVE;
uvp->uv_lstate = UVL_READY;
STACK_CALL(SSCF_UNI_ESTABLISH_CNF, uvp->uv_upper,
uvp->uv_toku, cvp,
SSCOP_UU_NULL, 0, err);
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVL_TERM:
/*
* Ignoring everything
*/
break;
case UVL_INST:
case UVL_IDLE:
case UVL_INCONN:
case UVL_OUTDISC:
case UVL_OUTRESYN:
case UVL_INRESYN:
case UVL_RECOVERY:
case UVL_READY:
default:
log(LOG_ERR, "sscf_uni_upper: cmd=0x%x, lstate=%d\n",
cmd, uvp->uv_lstate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCOP_RELEASE_IND:
/*
* We don't support SSCOP User-to-User data, so just
* get rid of any supplied to us
*/
if (arg1 != SSCOP_UU_NULL)
KB_FREEALL((KBuffer *)arg1);
/*
* Validation based on sscop state
*/
switch (uvp->uv_lstate) {
case UVL_OUTCONN:
case UVL_OUTRESYN:
case UVL_READY:
/*
* Peer requesting connection termination
*/
/*
* Notify the user that the connection
* has been terminated
*/
uvp->uv_ustate = UVU_RELEASED;
uvp->uv_lstate = UVL_IDLE;
STACK_CALL(SSCF_UNI_RELEASE_IND, uvp->uv_upper,
uvp->uv_toku, cvp,
SSCOP_UU_NULL, 0, err);
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVL_TERM:
/*
* Ignoring everything
*/
break;
case UVL_INST:
case UVL_IDLE:
case UVL_INCONN:
case UVL_OUTDISC:
case UVL_INRESYN:
case UVL_RECOVERY:
default:
log(LOG_ERR, "sscf_uni_upper: cmd=0x%x, lstate=%d\n",
cmd, uvp->uv_lstate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCOP_RELEASE_CNF:
/*
* Validation based on sscop state
*/
switch (uvp->uv_lstate) {
case UVL_OUTDISC:
/*
* Peer acknowledging connection termination
*/
/*
* Notify the user that the connection
* termination is completed
*/
uvp->uv_ustate = UVU_RELEASED;
uvp->uv_lstate = UVL_IDLE;
STACK_CALL(SSCF_UNI_RELEASE_CNF, uvp->uv_upper,
uvp->uv_toku, cvp,
SSCOP_UU_NULL, 0, err);
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVL_TERM:
/*
* Ignoring everything
*/
break;
case UVL_INST:
case UVL_IDLE:
case UVL_OUTCONN:
case UVL_INCONN:
case UVL_OUTRESYN:
case UVL_INRESYN:
case UVL_RECOVERY:
case UVL_READY:
default:
log(LOG_ERR, "sscf_uni_upper: cmd=0x%x, lstate=%d\n",
cmd, uvp->uv_lstate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCOP_DATA_IND:
#ifdef notdef
sscf_uni_pdu_print(uvp, (KBuffer *)arg1, "DATA_IND");
#endif
/*
* Validation based on sscop state
*/
switch (uvp->uv_lstate) {
case UVL_READY:
/*
* Incoming assured data from peer
*/
/*
* Pass the data up to the user
*/
STACK_CALL(SSCF_UNI_DATA_IND, uvp->uv_upper,
uvp->uv_toku, cvp,
arg1, 0, err);
if (err) {
KB_FREEALL((KBuffer *)arg1);
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVL_TERM:
/*
* Ignoring everything
*/
KB_FREEALL((KBuffer *)arg1);
break;
case UVL_INST:
case UVL_IDLE:
case UVL_OUTCONN:
case UVL_INCONN:
case UVL_OUTDISC:
case UVL_OUTRESYN:
case UVL_INRESYN:
case UVL_RECOVERY:
default:
KB_FREEALL((KBuffer *)arg1);
log(LOG_ERR, "sscf_uni_upper: cmd=0x%x, lstate=%d\n",
cmd, uvp->uv_lstate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCOP_RESYNC_IND:
/*
* We don't support SSCOP User-to-User data, so just
* get rid of any supplied to us
*/
if (arg1 != SSCOP_UU_NULL)
KB_FREEALL((KBuffer *)arg1);
/*
* Validation based on sscop state
*/
switch (uvp->uv_lstate) {
case UVL_READY:
/*
* Incoming connection resynchronization request
*/
/*
* Send resynch acknowledgement to sscop
*/
STACK_CALL(SSCOP_RESYNC_RSP, uvp->uv_lower,
uvp->uv_tokl, cvp,
0, 0, err);
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
if (uvp->uv_vers != UNI_VERS_3_0) {
/*
* Notify the user that the connection
* has been resynced
*/
STACK_CALL(SSCF_UNI_ESTABLISH_IND,
uvp->uv_upper, uvp->uv_toku, cvp,
SSCOP_UU_NULL, 0, err);
if (err) {
sscf_uni_abort(uvp,
"sscf_uni: stack memory\n");
return;
}
}
break;
case UVL_TERM:
/*
* Ignoring everything
*/
break;
case UVL_INST:
case UVL_IDLE:
case UVL_OUTCONN:
case UVL_INCONN:
case UVL_OUTDISC:
case UVL_OUTRESYN:
case UVL_INRESYN:
case UVL_RECOVERY:
default:
log(LOG_ERR, "sscf_uni_upper: cmd=0x%x, lstate=%d\n",
cmd, uvp->uv_lstate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCOP_RESYNC_CNF:
/*
* Not supported in version 3.0
*/
if (uvp->uv_vers == UNI_VERS_3_0) {
sscf_uni_abort(uvp,
"sscf_uni: SSCOP_RESYNC_CNF in 3.0\n");
return;
}
/*
* Validation based on sscop state
*/
switch (uvp->uv_lstate) {
case UVL_OUTRESYN:
/*
* Peer acknowledging connection resynchronization
*/
/*
* Now notify the user that the connection
* has been resynced
*/
uvp->uv_ustate = UVU_ACTIVE;
uvp->uv_lstate = UVL_READY;
STACK_CALL(SSCF_UNI_ESTABLISH_CNF, uvp->uv_upper,
uvp->uv_toku, cvp,
SSCOP_UU_NULL, 0, err);
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVL_TERM:
/*
* Ignoring everything
*/
break;
case UVL_INST:
case UVL_IDLE:
case UVL_OUTCONN:
case UVL_INCONN:
case UVL_OUTDISC:
case UVL_INRESYN:
case UVL_RECOVERY:
case UVL_READY:
default:
log(LOG_ERR, "sscf_uni_upper: cmd=0x%x, lstate=%d\n",
cmd, uvp->uv_lstate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCOP_RECOVER_IND:
/*
* Not supported in version 3.0
*/
if (uvp->uv_vers == UNI_VERS_3_0) {
sscf_uni_abort(uvp,
"sscf_uni: SSCOP_RECOVER_IND in 3.0\n");
return;
}
/*
* Validation based on sscop state
*/
switch (uvp->uv_lstate) {
case UVL_READY:
/*
* Recover connection due to internal problems
*/
/*
* Send recovery acknowledgement to sscop
*/
STACK_CALL(SSCOP_RECOVER_RSP, uvp->uv_lower,
uvp->uv_tokl, cvp,
0, 0, err);
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
/*
* Now notify the user that the connection
* has been recovered
*/
STACK_CALL(SSCF_UNI_ESTABLISH_IND, uvp->uv_upper,
uvp->uv_toku, cvp,
SSCOP_UU_NULL, 0, err);
if (err) {
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVL_TERM:
/*
* Ignoring everything
*/
break;
case UVL_INST:
case UVL_IDLE:
case UVL_OUTCONN:
case UVL_INCONN:
case UVL_OUTDISC:
case UVL_OUTRESYN:
case UVL_INRESYN:
case UVL_RECOVERY:
default:
log(LOG_ERR, "sscf_uni_upper: cmd=0x%x, lstate=%d\n",
cmd, uvp->uv_lstate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCOP_UNITDATA_IND:
#ifdef notdef
sscf_uni_pdu_print(uvp, (KBuffer *)arg1, "UNITDATA_IND");
#endif
/*
* Validation based on sscop state
*/
switch (uvp->uv_lstate) {
case UVL_IDLE:
case UVL_OUTCONN:
case UVL_INCONN:
case UVL_OUTDISC:
case UVL_OUTRESYN:
case UVL_INRESYN:
case UVL_RECOVERY:
case UVL_READY:
/*
* Incoming unassured data from peer
*/
/*
* Pass the data up to the user
*/
STACK_CALL(SSCF_UNI_UNITDATA_IND, uvp->uv_upper,
uvp->uv_toku, cvp,
arg1, 0, err);
if (err) {
KB_FREEALL((KBuffer *)arg1);
sscf_uni_abort(uvp, "sscf_uni: stack memory\n");
return;
}
break;
case UVL_TERM:
/*
* Ignoring everything
*/
KB_FREEALL((KBuffer *)arg1);
break;
case UVL_INST:
default:
KB_FREEALL((KBuffer *)arg1);
log(LOG_ERR, "sscf_uni_upper: cmd=0x%x, lstate=%d\n",
cmd, uvp->uv_lstate);
sscf_uni_abort(uvp, "sscf_uni: sequence err\n");
}
break;
case SSCOP_RETRIEVE_IND:
case SSCOP_RETRIEVECMP_IND:
/*
* Not supported
*/
default:
log(LOG_ERR, "sscf_uni_upper: unknown cmd 0x%x, uvp=%p\n",
cmd, uvp);
}
return;
}
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