392 lines
7.5 KiB
C
392 lines
7.5 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 3.0/3.1 Signalling Manager
|
|
* ----------------------------------------
|
|
*
|
|
* Protocol processing module
|
|
*
|
|
*/
|
|
|
|
#include <netatm/kern_include.h>
|
|
|
|
#include <netatm/uni/unisig.h>
|
|
#include <netatm/uni/unisig_var.h>
|
|
#include <netatm/uni/unisig_msg.h>
|
|
|
|
#ifndef lint
|
|
__RCSID("@(#) $FreeBSD$");
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Free a UNISIG signalling message
|
|
*
|
|
* Free the passed message and any IEs that are attached to it
|
|
*
|
|
* Arguments:
|
|
* msg pointer to UNISIG protocol instance
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
unisig_free_msg(msg)
|
|
struct unisig_msg *msg;
|
|
{
|
|
int i;
|
|
struct ie_generic *ie, *ienxt;
|
|
|
|
ATM_DEBUG1("unisig_free_msg: msg=%p\n", msg);
|
|
|
|
/*
|
|
* First free all the IEs
|
|
*/
|
|
for (i=0; i<UNI_MSG_IE_CNT; i++) {
|
|
ie = msg->msg_ie_vec[i];
|
|
while (ie) {
|
|
ienxt = ie->ie_next;
|
|
atm_free(ie);
|
|
ie = ienxt;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Finally, free the message structure itself
|
|
*/
|
|
atm_free(msg);
|
|
}
|
|
|
|
|
|
/*
|
|
* Verify a VCCB
|
|
*
|
|
* Search UNISIG's VCCB queue to verify that a VCCB belongs to UNISIG.
|
|
*
|
|
* Arguments:
|
|
* usp pointer to UNISIG protocol instance
|
|
* svp pointer to a VCCB
|
|
*
|
|
* Returns:
|
|
* TRUE the VCCB belongs to UNISIG
|
|
* FALSE the VCCB doesn't belong to UNISIG
|
|
*
|
|
*/
|
|
int
|
|
unisig_verify_vccb(usp, uvp)
|
|
struct unisig *usp;
|
|
struct unisig_vccb *uvp;
|
|
|
|
{
|
|
struct unisig_vccb *utp, *uvnext;
|
|
|
|
for (utp = Q_HEAD(usp->us_vccq, struct unisig_vccb);
|
|
utp; utp = uvnext){
|
|
uvnext = Q_NEXT(utp, struct unisig_vccb, uv_sigelem);
|
|
if (uvp == utp) {
|
|
return(TRUE);
|
|
}
|
|
}
|
|
return(FALSE);
|
|
}
|
|
|
|
|
|
/*
|
|
* Find a connection
|
|
*
|
|
* Find a VCCB given the call reference
|
|
*
|
|
* Arguments:
|
|
* usp pointer to UNISIG protocol instance
|
|
* cref the call reference to search for
|
|
*
|
|
* Returns:
|
|
* 0 there is no such VCCB
|
|
* uvp the address of the VCCB
|
|
*
|
|
*/
|
|
struct unisig_vccb *
|
|
unisig_find_conn(usp, cref)
|
|
struct unisig *usp;
|
|
u_int cref;
|
|
|
|
{
|
|
struct unisig_vccb *uvp, *uvnext;
|
|
|
|
for (uvp = Q_HEAD(usp->us_vccq, struct unisig_vccb); uvp;
|
|
uvp = uvnext){
|
|
uvnext = Q_NEXT(uvp, struct unisig_vccb, uv_sigelem);
|
|
if (uvp->uv_call_ref == cref)
|
|
break;
|
|
}
|
|
return(uvp);
|
|
}
|
|
|
|
|
|
/*
|
|
* Find a VCCB
|
|
*
|
|
* Find a VCCB given the VPI and VCI.
|
|
*
|
|
* Arguments:
|
|
* usp pointer to UNISIG protocol instance
|
|
* vpi the VPI to search for
|
|
* vci the VCI to search for
|
|
* dir the direction of the VCC (VCC_IN, VCC_OUT, or both).
|
|
* If dir is set to zero, return the address of any VCCB
|
|
* with the given VPI/VCI, regardless of direction.
|
|
*
|
|
* Returns:
|
|
* 0 there is no such VCCB
|
|
* uvp the address of the VCCB
|
|
*
|
|
*/
|
|
struct unisig_vccb *
|
|
unisig_find_vpvc(usp, vpi, vci, dir)
|
|
struct unisig *usp;
|
|
int vpi, vci;
|
|
u_char dir;
|
|
|
|
{
|
|
struct unisig_vccb *uvp, *uvnext;
|
|
|
|
for (uvp = Q_HEAD(usp->us_vccq, struct unisig_vccb); uvp;
|
|
uvp = uvnext){
|
|
uvnext = Q_NEXT(uvp, struct unisig_vccb, uv_sigelem);
|
|
if (uvp->uv_vpi == vpi &&
|
|
uvp->uv_vci == vci &&
|
|
(uvp->uv_type & dir) == dir)
|
|
break;
|
|
}
|
|
return(uvp);
|
|
}
|
|
|
|
|
|
/*
|
|
* Allocate a call reference value
|
|
*
|
|
* Arguments:
|
|
* usp pointer to UNISIG protocol instance
|
|
*
|
|
* Returns:
|
|
* 0 call reference not available
|
|
* cref the call reference value
|
|
*
|
|
*/
|
|
int
|
|
unisig_alloc_call_ref(usp)
|
|
struct unisig *usp;
|
|
|
|
{
|
|
int cref;
|
|
|
|
/*
|
|
* Get the next call reference value
|
|
*/
|
|
cref = usp->us_cref;
|
|
|
|
/*
|
|
* Make sure it hasn't got too large
|
|
*/
|
|
if (cref >= UNI_MSG_CALL_REF_DUMMY) {
|
|
/* XXX */
|
|
log(LOG_ERR, "uni: call reference limit reached\n");
|
|
return(0);
|
|
}
|
|
|
|
/*
|
|
* Bump the call reference value
|
|
*/
|
|
usp->us_cref++;
|
|
|
|
return(cref);
|
|
}
|
|
|
|
|
|
/*
|
|
* Print an ATM address
|
|
*
|
|
* Convert an ATM address into an ASCII string suitable for printing.
|
|
*
|
|
* Arguments:
|
|
* p pointer to an ATM address
|
|
*
|
|
* Returns:
|
|
* the address of a string with the ASCII representation of the
|
|
* address. This routine returns the address of a statically-
|
|
* allocated buffer, so if repeated calls to this routine are made,
|
|
* each call will destroy the result of the previous call.
|
|
*
|
|
*/
|
|
char *
|
|
unisig_addr_print(p)
|
|
Atm_addr *p;
|
|
{
|
|
int i;
|
|
char *fp, *op, t_buff[16];
|
|
u_char *cp;
|
|
static char strbuff[256];
|
|
|
|
static char nf_DCC[] = "0xX.XX.X.XXX.XX.XX.XX.XXXXXX.X";
|
|
static char nf_ICD[] = "0xX.XX.X.XXX.XX.XX.XX.XXXXXX.X";
|
|
static char nf_E164[] = "0xX.XXXXXXXX.XX.XX.XXXXXX.X";
|
|
|
|
union {
|
|
int w;
|
|
char c[4];
|
|
} u1, u2;
|
|
|
|
/*
|
|
* Clear the print buffer
|
|
*/
|
|
KM_ZERO(strbuff, sizeof(strbuff));
|
|
|
|
/*
|
|
* Select appropriate printing format
|
|
*/
|
|
switch(p->address_format) {
|
|
case T_ATM_ENDSYS_ADDR:
|
|
/*
|
|
* Select format by NSAP type
|
|
*/
|
|
switch(((Atm_addr_nsap *)p->address)->aan_afi) {
|
|
default:
|
|
case AFI_DCC:
|
|
fp = nf_DCC;
|
|
break;
|
|
case AFI_ICD:
|
|
fp = nf_ICD;
|
|
break;
|
|
case AFI_E164:
|
|
fp = nf_E164;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Loop through the format string, converting the NSAP
|
|
* to ASCII
|
|
*/
|
|
cp = (u_char *) p->address;
|
|
op = strbuff;
|
|
while (*fp) {
|
|
if (*fp == 'X') {
|
|
/*
|
|
* If format character is an 'X', put a
|
|
* two-digit hex representation of the
|
|
* NSAP byte in the output buffer
|
|
*/
|
|
snprintf(t_buff, sizeof(t_buff),
|
|
"%x", *cp + 512);
|
|
strcpy(op, &t_buff[strlen(t_buff)-2]);
|
|
op++; op++;
|
|
cp++;
|
|
} else {
|
|
/*
|
|
* If format character isn't an 'X',
|
|
* just copy it to the output buffer
|
|
*/
|
|
*op = *fp;
|
|
op++;
|
|
}
|
|
fp++;
|
|
}
|
|
|
|
break;
|
|
|
|
case T_ATM_E164_ADDR:
|
|
/*
|
|
* Print the IA5 characters of the E.164 address
|
|
*/
|
|
for(i=0; i<p->address_length; i++) {
|
|
snprintf(strbuff + strlen(strbuff),
|
|
sizeof(strbuff) - strlen(strbuff), "%c",
|
|
((Atm_addr_e164 *)p->address)->aae_addr[i]);
|
|
}
|
|
break;
|
|
|
|
case T_ATM_SPANS_ADDR:
|
|
/*
|
|
* Get address into integers
|
|
*/
|
|
u1.c[0] = ((Atm_addr_spans *)p->address)->aas_addr[0];
|
|
u1.c[1] = ((Atm_addr_spans *)p->address)->aas_addr[1];
|
|
u1.c[2] = ((Atm_addr_spans *)p->address)->aas_addr[2];
|
|
u1.c[3] = ((Atm_addr_spans *)p->address)->aas_addr[3];
|
|
u2.c[0] = ((Atm_addr_spans *)p->address)->aas_addr[4];
|
|
u2.c[1] = ((Atm_addr_spans *)p->address)->aas_addr[5];
|
|
u2.c[2] = ((Atm_addr_spans *)p->address)->aas_addr[6];
|
|
u2.c[3] = ((Atm_addr_spans *)p->address)->aas_addr[7];
|
|
|
|
/*
|
|
* Print the address as two words xxxxx.yyyyyyyy
|
|
*/
|
|
snprintf(strbuff, sizeof(strbuff), "%x.%x", u1.w, u2.w);
|
|
break;
|
|
|
|
case T_ATM_ABSENT:
|
|
default:
|
|
strcpy(strbuff, "-");
|
|
}
|
|
|
|
return(strbuff);
|
|
}
|
|
|
|
|
|
/*
|
|
* Print the contents of a message buffer chain
|
|
*
|
|
* Arguments:
|
|
* m pointer to a buffer
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
unisig_print_mbuf(m)
|
|
KBuffer *m;
|
|
{
|
|
int i;
|
|
caddr_t cp;
|
|
|
|
printf("unisig_print_mbuf:\n");
|
|
while (m) {
|
|
KB_DATASTART(m, cp, caddr_t);
|
|
for (i = 0; i < KB_LEN(m); i++) {
|
|
if (i == 0)
|
|
printf(" bfr=%p: ", m);
|
|
printf("%x ", (u_char)*cp++);
|
|
}
|
|
printf("<end_bfr>\n");
|
|
m = KB_NEXT(m);
|
|
}
|
|
}
|