335 lines
6.3 KiB
C
335 lines
6.3 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
|
|
* ---------------------
|
|
*
|
|
* Signalling AAL SSCF at the UNI
|
|
*
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/errno.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_vc.h>
|
|
#include <netatm/atm_stack.h>
|
|
#include <netatm/atm_pcb.h>
|
|
#include <netatm/atm_var.h>
|
|
|
|
#include <netatm/uni/uni.h>
|
|
#include <netatm/uni/sscf_uni_var.h>
|
|
|
|
#ifndef lint
|
|
__RCSID("@(#) $FreeBSD$");
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Global variables
|
|
*/
|
|
int sscf_uni_vccnt = 0;
|
|
|
|
/*
|
|
* Local functions
|
|
*/
|
|
static int sscf_uni_inst(struct stack_defn **, Atm_connvc *);
|
|
|
|
/*
|
|
* Local variables
|
|
*/
|
|
static struct sp_info sscf_uni_pool = {
|
|
"sscf uni pool", /* si_name */
|
|
sizeof(struct univcc), /* si_blksiz */
|
|
5, /* si_blkcnt */
|
|
100 /* si_maxallow */
|
|
};
|
|
|
|
static struct stack_defn sscf_uni_service = {
|
|
NULL,
|
|
SAP_SSCF_UNI,
|
|
0,
|
|
sscf_uni_inst,
|
|
sscf_uni_lower,
|
|
sscf_uni_upper,
|
|
0
|
|
};
|
|
|
|
static struct t_atm_cause sscf_uni_cause = {
|
|
T_ATM_ITU_CODING,
|
|
T_ATM_LOC_USER,
|
|
T_ATM_CAUSE_TEMPORARY_FAILURE,
|
|
{0, 0, 0, 0}
|
|
};
|
|
|
|
|
|
/*
|
|
* Initialize SSCF UNI processing
|
|
*
|
|
* This will be called during module loading. We will register our stack
|
|
* service and wait for someone to talk to us.
|
|
*
|
|
* Arguments:
|
|
* none
|
|
*
|
|
* Returns:
|
|
* 0 initialization was successful
|
|
* errno initialization failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
sscf_uni_start()
|
|
{
|
|
int err = 0;
|
|
|
|
/*
|
|
* Register stack service
|
|
*/
|
|
if ((err = atm_stack_register(&sscf_uni_service)) != 0)
|
|
goto done;
|
|
|
|
done:
|
|
return (err);
|
|
}
|
|
|
|
|
|
/*
|
|
* Terminate SSCF UNI processing
|
|
*
|
|
* This will be called just prior to unloading the module from memory. All
|
|
* signalling instances should have been terminated by now, so we just free
|
|
* up all of our resources.
|
|
*
|
|
* Called at splnet.
|
|
*
|
|
* Arguments:
|
|
* none
|
|
*
|
|
* Returns:
|
|
* 0 termination was successful
|
|
* errno termination failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
sscf_uni_stop()
|
|
{
|
|
/*
|
|
* Any connections still exist??
|
|
*/
|
|
if (sscf_uni_vccnt) {
|
|
|
|
/*
|
|
* Yes, can't stop yet
|
|
*/
|
|
return (EBUSY);
|
|
}
|
|
|
|
/*
|
|
* Deregister the stack service
|
|
*/
|
|
(void) atm_stack_deregister(&sscf_uni_service);
|
|
|
|
/*
|
|
* Free our storage pools
|
|
*/
|
|
atm_release_pool(&sscf_uni_pool);
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* SSCF_UNI Stack Instantiation
|
|
*
|
|
* Called at splnet.
|
|
*
|
|
* Arguments:
|
|
* ssp pointer to array of stack definition pointers for connection
|
|
* ssp[0] points to upper layer's stack service definition
|
|
* ssp[1] points to this layer's stack service definition
|
|
* ssp[2] points to lower layer's stack service definition
|
|
* cvp pointer to connection vcc for this stack
|
|
*
|
|
* Returns:
|
|
* 0 instantiation successful
|
|
* errno instantiation failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
sscf_uni_inst(ssp, cvp)
|
|
struct stack_defn **ssp;
|
|
Atm_connvc *cvp;
|
|
{
|
|
struct stack_defn *sdp_up = ssp[0],
|
|
*sdp_me = ssp[1],
|
|
*sdp_low = ssp[2];
|
|
struct univcc *uvp;
|
|
int err;
|
|
|
|
ATM_DEBUG2("sscf_uni_inst: ssp=%p, cvp=%p\n", ssp, cvp);
|
|
|
|
/*
|
|
* Validate lower SAP
|
|
*/
|
|
if (sdp_low->sd_sap != SAP_SSCOP)
|
|
return (EINVAL);
|
|
|
|
/*
|
|
* Allocate our control block
|
|
*/
|
|
uvp = (struct univcc *)atm_allocate(&sscf_uni_pool);
|
|
if (uvp == NULL)
|
|
return (ENOMEM);
|
|
|
|
uvp->uv_ustate = UVU_INST;
|
|
uvp->uv_lstate = UVL_INST;
|
|
uvp->uv_connvc = cvp;
|
|
uvp->uv_toku = sdp_up->sd_toku;
|
|
uvp->uv_upper = sdp_up->sd_upper;
|
|
sscf_uni_vccnt++;
|
|
|
|
/*
|
|
* Store my token into service definition
|
|
*/
|
|
sdp_me->sd_toku = uvp;
|
|
|
|
/*
|
|
* Update and save input buffer headroom
|
|
*/
|
|
HEADIN(cvp, 0, 0);
|
|
/* uvp->uv_headin = cvp->cvc_attr.headin; */
|
|
|
|
/*
|
|
* Pass instantiation down the stack
|
|
*/
|
|
err = sdp_low->sd_inst(ssp + 1, cvp);
|
|
if (err) {
|
|
/*
|
|
* Lower layer instantiation failed, free our resources
|
|
*/
|
|
atm_free((caddr_t)uvp);
|
|
sscf_uni_vccnt--;
|
|
return (err);
|
|
}
|
|
|
|
/*
|
|
* Save and update output buffer headroom
|
|
*/
|
|
/* uvp->uv_headout = cvp->cvc_attr.headout; */
|
|
HEADOUT(cvp, 0, 0);
|
|
|
|
/*
|
|
* Save lower layer's interface info
|
|
*/
|
|
uvp->uv_lower = sdp_low->sd_lower;
|
|
uvp->uv_tokl = sdp_low->sd_toku;
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Abort an SSCF_UNI connection
|
|
*
|
|
* Called when an unrecoverable or "should never happen" error occurs.
|
|
* We just log a message and request the signalling manager to abort the
|
|
* connection.
|
|
*
|
|
* Arguments:
|
|
* uvp pointer to univcc control block
|
|
* msg pointer to error message
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
sscf_uni_abort(uvp, msg)
|
|
struct univcc *uvp;
|
|
char *msg;
|
|
{
|
|
/*
|
|
* Log error message
|
|
*/
|
|
log(LOG_ERR, "%s", msg);
|
|
|
|
/*
|
|
* Set termination states
|
|
*/
|
|
uvp->uv_ustate = UVU_TERM;
|
|
uvp->uv_lstate = UVL_TERM;
|
|
|
|
/*
|
|
* Tell Connection Manager to abort this connection
|
|
*/
|
|
(void) atm_cm_abort(uvp->uv_connvc, &sscf_uni_cause);
|
|
}
|
|
|
|
|
|
/*
|
|
* Print an SSCF PDU
|
|
*
|
|
* Arguments:
|
|
* uvp pointer to univcc control block
|
|
* m pointer to pdu buffer chain
|
|
* msg pointer to message string
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
sscf_uni_pdu_print(uvp, m, msg)
|
|
struct univcc *uvp;
|
|
KBuffer *m;
|
|
char *msg;
|
|
{
|
|
char buf[128];
|
|
struct vccb *vcp;
|
|
|
|
vcp = uvp->uv_connvc->cvc_vcc;
|
|
snprintf(buf, sizeof(buf), "sscf_uni %s: vcc=(%d,%d)\n",
|
|
msg, vcp->vc_vpi, vcp->vc_vci);
|
|
atm_pdu_print(m, buf);
|
|
}
|
|
|