3228 lines
81 KiB
C
3228 lines
81 KiB
C
/* $Id: l3dss1.c,v 2.32.2.3 2004/01/13 14:31:25 keil Exp $
|
|
*
|
|
* EURO/DSS1 D-channel protocol
|
|
*
|
|
* German 1TR6 D-channel protocol
|
|
*
|
|
* Author Karsten Keil
|
|
* based on the teles driver from Jan den Ouden
|
|
* Copyright by Karsten Keil <keil@isdn4linux.de>
|
|
*
|
|
* This software may be used and distributed according to the terms
|
|
* of the GNU General Public License, incorporated herein by reference.
|
|
*
|
|
* For changes and modifications please read
|
|
* Documentation/isdn/HiSax.cert
|
|
*
|
|
* Thanks to Jan den Ouden
|
|
* Fritz Elfert
|
|
*
|
|
*/
|
|
|
|
#include "hisax.h"
|
|
#include "isdnl3.h"
|
|
#include "l3dss1.h"
|
|
#include <linux/ctype.h>
|
|
|
|
extern char *HiSax_getrev(const char *revision);
|
|
static const char *dss1_revision = "$Revision: 2.32.2.3 $";
|
|
|
|
#define EXT_BEARER_CAPS 1
|
|
|
|
#define MsgHead(ptr, cref, mty) \
|
|
*ptr++ = 0x8; \
|
|
if (cref == -1) { \
|
|
*ptr++ = 0x0; \
|
|
} else { \
|
|
*ptr++ = 0x1; \
|
|
*ptr++ = cref^0x80; \
|
|
} \
|
|
*ptr++ = mty
|
|
|
|
|
|
/**********************************************/
|
|
/* get a new invoke id for remote operations. */
|
|
/* Only a return value != 0 is valid */
|
|
/**********************************************/
|
|
static unsigned char new_invoke_id(struct PStack *p)
|
|
{
|
|
unsigned char retval;
|
|
int i;
|
|
|
|
i = 32; /* maximum search depth */
|
|
|
|
retval = p->prot.dss1.last_invoke_id + 1; /* try new id */
|
|
while ((i) && (p->prot.dss1.invoke_used[retval >> 3] == 0xFF)) {
|
|
p->prot.dss1.last_invoke_id = (retval & 0xF8) + 8;
|
|
i--;
|
|
}
|
|
if (i) {
|
|
while (p->prot.dss1.invoke_used[retval >> 3] & (1 << (retval & 7)))
|
|
retval++;
|
|
} else
|
|
retval = 0;
|
|
p->prot.dss1.last_invoke_id = retval;
|
|
p->prot.dss1.invoke_used[retval >> 3] |= (1 << (retval & 7));
|
|
return(retval);
|
|
} /* new_invoke_id */
|
|
|
|
/*************************/
|
|
/* free a used invoke id */
|
|
/*************************/
|
|
static void free_invoke_id(struct PStack *p, unsigned char id)
|
|
{
|
|
|
|
if (!id) return; /* 0 = invalid value */
|
|
|
|
p->prot.dss1.invoke_used[id >> 3] &= ~(1 << (id & 7));
|
|
} /* free_invoke_id */
|
|
|
|
|
|
/**********************************************************/
|
|
/* create a new l3 process and fill in dss1 specific data */
|
|
/**********************************************************/
|
|
static struct l3_process
|
|
*dss1_new_l3_process(struct PStack *st, int cr)
|
|
{ struct l3_process *proc;
|
|
|
|
if (!(proc = new_l3_process(st, cr)))
|
|
return(NULL);
|
|
|
|
proc->prot.dss1.invoke_id = 0;
|
|
proc->prot.dss1.remote_operation = 0;
|
|
proc->prot.dss1.uus1_data[0] = '\0';
|
|
|
|
return(proc);
|
|
} /* dss1_new_l3_process */
|
|
|
|
/************************************************/
|
|
/* free a l3 process and all dss1 specific data */
|
|
/************************************************/
|
|
static void
|
|
dss1_release_l3_process(struct l3_process *p)
|
|
{
|
|
free_invoke_id(p->st,p->prot.dss1.invoke_id);
|
|
release_l3_process(p);
|
|
} /* dss1_release_l3_process */
|
|
|
|
/********************************************************/
|
|
/* search a process with invoke id id and dummy callref */
|
|
/********************************************************/
|
|
static struct l3_process *
|
|
l3dss1_search_dummy_proc(struct PStack *st, int id)
|
|
{ struct l3_process *pc = st->l3.proc; /* start of processes */
|
|
|
|
if (!id) return(NULL);
|
|
|
|
while (pc)
|
|
{ if ((pc->callref == -1) && (pc->prot.dss1.invoke_id == id))
|
|
return(pc);
|
|
pc = pc->next;
|
|
}
|
|
return(NULL);
|
|
} /* l3dss1_search_dummy_proc */
|
|
|
|
/*******************************************************************/
|
|
/* called when a facility message with a dummy callref is received */
|
|
/* and a return result is delivered. id specifies the invoke id. */
|
|
/*******************************************************************/
|
|
static void
|
|
l3dss1_dummy_return_result(struct PStack *st, int id, u_char *p, u_char nlen)
|
|
{ isdn_ctrl ic;
|
|
struct IsdnCardState *cs;
|
|
struct l3_process *pc = NULL;
|
|
|
|
if ((pc = l3dss1_search_dummy_proc(st, id)))
|
|
{ L3DelTimer(&pc->timer); /* remove timer */
|
|
|
|
cs = pc->st->l1.hardware;
|
|
ic.driver = cs->myid;
|
|
ic.command = ISDN_STAT_PROT;
|
|
ic.arg = DSS1_STAT_INVOKE_RES;
|
|
ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id;
|
|
ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id;
|
|
ic.parm.dss1_io.proc = pc->prot.dss1.proc;
|
|
ic.parm.dss1_io.timeout= 0;
|
|
ic.parm.dss1_io.datalen = nlen;
|
|
ic.parm.dss1_io.data = p;
|
|
free_invoke_id(pc->st, pc->prot.dss1.invoke_id);
|
|
pc->prot.dss1.invoke_id = 0; /* reset id */
|
|
|
|
cs->iif.statcallb(&ic);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
else
|
|
l3_debug(st, "dummy return result id=0x%x result len=%d",id,nlen);
|
|
} /* l3dss1_dummy_return_result */
|
|
|
|
/*******************************************************************/
|
|
/* called when a facility message with a dummy callref is received */
|
|
/* and a return error is delivered. id specifies the invoke id. */
|
|
/*******************************************************************/
|
|
static void
|
|
l3dss1_dummy_error_return(struct PStack *st, int id, ulong error)
|
|
{ isdn_ctrl ic;
|
|
struct IsdnCardState *cs;
|
|
struct l3_process *pc = NULL;
|
|
|
|
if ((pc = l3dss1_search_dummy_proc(st, id)))
|
|
{ L3DelTimer(&pc->timer); /* remove timer */
|
|
|
|
cs = pc->st->l1.hardware;
|
|
ic.driver = cs->myid;
|
|
ic.command = ISDN_STAT_PROT;
|
|
ic.arg = DSS1_STAT_INVOKE_ERR;
|
|
ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id;
|
|
ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id;
|
|
ic.parm.dss1_io.proc = pc->prot.dss1.proc;
|
|
ic.parm.dss1_io.timeout= error;
|
|
ic.parm.dss1_io.datalen = 0;
|
|
ic.parm.dss1_io.data = NULL;
|
|
free_invoke_id(pc->st, pc->prot.dss1.invoke_id);
|
|
pc->prot.dss1.invoke_id = 0; /* reset id */
|
|
|
|
cs->iif.statcallb(&ic);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
else
|
|
l3_debug(st, "dummy return error id=0x%x error=0x%lx",id,error);
|
|
} /* l3dss1_error_return */
|
|
|
|
/*******************************************************************/
|
|
/* called when a facility message with a dummy callref is received */
|
|
/* and a invoke is delivered. id specifies the invoke id. */
|
|
/*******************************************************************/
|
|
static void
|
|
l3dss1_dummy_invoke(struct PStack *st, int cr, int id,
|
|
int ident, u_char *p, u_char nlen)
|
|
{ isdn_ctrl ic;
|
|
struct IsdnCardState *cs;
|
|
|
|
l3_debug(st, "dummy invoke %s id=0x%x ident=0x%x datalen=%d",
|
|
(cr == -1) ? "local" : "broadcast",id,ident,nlen);
|
|
if (cr >= -1) return; /* ignore local data */
|
|
|
|
cs = st->l1.hardware;
|
|
ic.driver = cs->myid;
|
|
ic.command = ISDN_STAT_PROT;
|
|
ic.arg = DSS1_STAT_INVOKE_BRD;
|
|
ic.parm.dss1_io.hl_id = id;
|
|
ic.parm.dss1_io.ll_id = 0;
|
|
ic.parm.dss1_io.proc = ident;
|
|
ic.parm.dss1_io.timeout= 0;
|
|
ic.parm.dss1_io.datalen = nlen;
|
|
ic.parm.dss1_io.data = p;
|
|
|
|
cs->iif.statcallb(&ic);
|
|
} /* l3dss1_dummy_invoke */
|
|
|
|
static void
|
|
l3dss1_parse_facility(struct PStack *st, struct l3_process *pc,
|
|
int cr, u_char * p)
|
|
{
|
|
int qd_len = 0;
|
|
unsigned char nlen = 0, ilen, cp_tag;
|
|
int ident, id;
|
|
ulong err_ret;
|
|
|
|
if (pc)
|
|
st = pc->st; /* valid Stack */
|
|
else
|
|
if ((!st) || (cr >= 0)) return; /* neither pc nor st specified */
|
|
|
|
p++;
|
|
qd_len = *p++;
|
|
if (qd_len == 0) {
|
|
l3_debug(st, "qd_len == 0");
|
|
return;
|
|
}
|
|
if ((*p & 0x1F) != 0x11) { /* Service discriminator, supplementary service */
|
|
l3_debug(st, "supplementary service != 0x11");
|
|
return;
|
|
}
|
|
while (qd_len > 0 && !(*p & 0x80)) { /* extension ? */
|
|
p++;
|
|
qd_len--;
|
|
}
|
|
if (qd_len < 2) {
|
|
l3_debug(st, "qd_len < 2");
|
|
return;
|
|
}
|
|
p++;
|
|
qd_len--;
|
|
if ((*p & 0xE0) != 0xA0) { /* class and form */
|
|
l3_debug(st, "class and form != 0xA0");
|
|
return;
|
|
}
|
|
|
|
cp_tag = *p & 0x1F; /* remember tag value */
|
|
|
|
p++;
|
|
qd_len--;
|
|
if (qd_len < 1)
|
|
{ l3_debug(st, "qd_len < 1");
|
|
return;
|
|
}
|
|
if (*p & 0x80)
|
|
{ /* length format indefinite or limited */
|
|
nlen = *p++ & 0x7F; /* number of len bytes or indefinite */
|
|
if ((qd_len-- < ((!nlen) ? 3 : (1 + nlen))) ||
|
|
(nlen > 1))
|
|
{ l3_debug(st, "length format error or not implemented");
|
|
return;
|
|
}
|
|
if (nlen == 1)
|
|
{ nlen = *p++; /* complete length */
|
|
qd_len--;
|
|
}
|
|
else
|
|
{ qd_len -= 2; /* trailing null bytes */
|
|
if ((*(p+qd_len)) || (*(p+qd_len+1)))
|
|
{ l3_debug(st,"length format indefinite error");
|
|
return;
|
|
}
|
|
nlen = qd_len;
|
|
}
|
|
}
|
|
else
|
|
{ nlen = *p++;
|
|
qd_len--;
|
|
}
|
|
if (qd_len < nlen)
|
|
{ l3_debug(st, "qd_len < nlen");
|
|
return;
|
|
}
|
|
qd_len -= nlen;
|
|
|
|
if (nlen < 2)
|
|
{ l3_debug(st, "nlen < 2");
|
|
return;
|
|
}
|
|
if (*p != 0x02)
|
|
{ /* invoke identifier tag */
|
|
l3_debug(st, "invoke identifier tag !=0x02");
|
|
return;
|
|
}
|
|
p++;
|
|
nlen--;
|
|
if (*p & 0x80)
|
|
{ /* length format */
|
|
l3_debug(st, "invoke id length format 2");
|
|
return;
|
|
}
|
|
ilen = *p++;
|
|
nlen--;
|
|
if (ilen > nlen || ilen == 0)
|
|
{ l3_debug(st, "ilen > nlen || ilen == 0");
|
|
return;
|
|
}
|
|
nlen -= ilen;
|
|
id = 0;
|
|
while (ilen > 0)
|
|
{ id = (id << 8) | (*p++ & 0xFF); /* invoke identifier */
|
|
ilen--;
|
|
}
|
|
|
|
switch (cp_tag) { /* component tag */
|
|
case 1: /* invoke */
|
|
if (nlen < 2) {
|
|
l3_debug(st, "nlen < 2 22");
|
|
return;
|
|
}
|
|
if (*p != 0x02) { /* operation value */
|
|
l3_debug(st, "operation value !=0x02");
|
|
return;
|
|
}
|
|
p++;
|
|
nlen--;
|
|
ilen = *p++;
|
|
nlen--;
|
|
if (ilen > nlen || ilen == 0) {
|
|
l3_debug(st, "ilen > nlen || ilen == 0 22");
|
|
return;
|
|
}
|
|
nlen -= ilen;
|
|
ident = 0;
|
|
while (ilen > 0) {
|
|
ident = (ident << 8) | (*p++ & 0xFF);
|
|
ilen--;
|
|
}
|
|
|
|
if (!pc)
|
|
{ l3dss1_dummy_invoke(st, cr, id, ident, p, nlen);
|
|
return;
|
|
}
|
|
#ifdef HISAX_DE_AOC
|
|
{
|
|
|
|
#define FOO1(s,a,b) \
|
|
while(nlen > 1) { \
|
|
int ilen = p[1]; \
|
|
if(nlen < ilen+2) { \
|
|
l3_debug(st, "FOO1 nlen < ilen+2"); \
|
|
return; \
|
|
} \
|
|
nlen -= ilen+2; \
|
|
if((*p & 0xFF) == (a)) { \
|
|
int nlen = ilen; \
|
|
p += 2; \
|
|
b; \
|
|
} else { \
|
|
p += ilen+2; \
|
|
} \
|
|
}
|
|
|
|
switch (ident) {
|
|
case 0x22: /* during */
|
|
FOO1("1A", 0x30, FOO1("1C", 0xA1, FOO1("1D", 0x30, FOO1("1E", 0x02, ( {
|
|
ident = 0;
|
|
nlen = (nlen)?nlen:0; /* Make gcc happy */
|
|
while (ilen > 0) {
|
|
ident = (ident << 8) | *p++;
|
|
ilen--;
|
|
}
|
|
if (ident > pc->para.chargeinfo) {
|
|
pc->para.chargeinfo = ident;
|
|
st->l3.l3l4(st, CC_CHARGE | INDICATION, pc);
|
|
}
|
|
if (st->l3.debug & L3_DEB_CHARGE) {
|
|
if (*(p + 2) == 0) {
|
|
l3_debug(st, "charging info during %d", pc->para.chargeinfo);
|
|
}
|
|
else {
|
|
l3_debug(st, "charging info final %d", pc->para.chargeinfo);
|
|
}
|
|
}
|
|
}
|
|
)))))
|
|
break;
|
|
case 0x24: /* final */
|
|
FOO1("2A", 0x30, FOO1("2B", 0x30, FOO1("2C", 0xA1, FOO1("2D", 0x30, FOO1("2E", 0x02, ( {
|
|
ident = 0;
|
|
nlen = (nlen)?nlen:0; /* Make gcc happy */
|
|
while (ilen > 0) {
|
|
ident = (ident << 8) | *p++;
|
|
ilen--;
|
|
}
|
|
if (ident > pc->para.chargeinfo) {
|
|
pc->para.chargeinfo = ident;
|
|
st->l3.l3l4(st, CC_CHARGE | INDICATION, pc);
|
|
}
|
|
if (st->l3.debug & L3_DEB_CHARGE) {
|
|
l3_debug(st, "charging info final %d", pc->para.chargeinfo);
|
|
}
|
|
}
|
|
))))))
|
|
break;
|
|
default:
|
|
l3_debug(st, "invoke break invalid ident %02x",ident);
|
|
break;
|
|
}
|
|
#undef FOO1
|
|
|
|
}
|
|
#else /* not HISAX_DE_AOC */
|
|
l3_debug(st, "invoke break");
|
|
#endif /* not HISAX_DE_AOC */
|
|
break;
|
|
case 2: /* return result */
|
|
/* if no process available handle separately */
|
|
if (!pc)
|
|
{ if (cr == -1)
|
|
l3dss1_dummy_return_result(st, id, p, nlen);
|
|
return;
|
|
}
|
|
if ((pc->prot.dss1.invoke_id) && (pc->prot.dss1.invoke_id == id))
|
|
{ /* Diversion successful */
|
|
free_invoke_id(st,pc->prot.dss1.invoke_id);
|
|
pc->prot.dss1.remote_result = 0; /* success */
|
|
pc->prot.dss1.invoke_id = 0;
|
|
pc->redir_result = pc->prot.dss1.remote_result;
|
|
st->l3.l3l4(st, CC_REDIR | INDICATION, pc); } /* Diversion successful */
|
|
else
|
|
l3_debug(st,"return error unknown identifier");
|
|
break;
|
|
case 3: /* return error */
|
|
err_ret = 0;
|
|
if (nlen < 2)
|
|
{ l3_debug(st, "return error nlen < 2");
|
|
return;
|
|
}
|
|
if (*p != 0x02)
|
|
{ /* result tag */
|
|
l3_debug(st, "invoke error tag !=0x02");
|
|
return;
|
|
}
|
|
p++;
|
|
nlen--;
|
|
if (*p > 4)
|
|
{ /* length format */
|
|
l3_debug(st, "invoke return errlen > 4 ");
|
|
return;
|
|
}
|
|
ilen = *p++;
|
|
nlen--;
|
|
if (ilen > nlen || ilen == 0)
|
|
{ l3_debug(st, "error return ilen > nlen || ilen == 0");
|
|
return;
|
|
}
|
|
nlen -= ilen;
|
|
while (ilen > 0)
|
|
{ err_ret = (err_ret << 8) | (*p++ & 0xFF); /* error value */
|
|
ilen--;
|
|
}
|
|
/* if no process available handle separately */
|
|
if (!pc)
|
|
{ if (cr == -1)
|
|
l3dss1_dummy_error_return(st, id, err_ret);
|
|
return;
|
|
}
|
|
if ((pc->prot.dss1.invoke_id) && (pc->prot.dss1.invoke_id == id))
|
|
{ /* Deflection error */
|
|
free_invoke_id(st,pc->prot.dss1.invoke_id);
|
|
pc->prot.dss1.remote_result = err_ret; /* result */
|
|
pc->prot.dss1.invoke_id = 0;
|
|
pc->redir_result = pc->prot.dss1.remote_result;
|
|
st->l3.l3l4(st, CC_REDIR | INDICATION, pc);
|
|
} /* Deflection error */
|
|
else
|
|
l3_debug(st,"return result unknown identifier");
|
|
break;
|
|
default:
|
|
l3_debug(st, "facility default break tag=0x%02x",cp_tag);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
l3dss1_message(struct l3_process *pc, u_char mt)
|
|
{
|
|
struct sk_buff *skb;
|
|
u_char *p;
|
|
|
|
if (!(skb = l3_alloc_skb(4)))
|
|
return;
|
|
p = skb_put(skb, 4);
|
|
MsgHead(p, pc->callref, mt);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
}
|
|
|
|
static void
|
|
l3dss1_message_cause(struct l3_process *pc, u_char mt, u_char cause)
|
|
{
|
|
struct sk_buff *skb;
|
|
u_char tmp[16];
|
|
u_char *p = tmp;
|
|
int l;
|
|
|
|
MsgHead(p, pc->callref, mt);
|
|
*p++ = IE_CAUSE;
|
|
*p++ = 0x2;
|
|
*p++ = 0x80;
|
|
*p++ = cause | 0x80;
|
|
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
}
|
|
|
|
static void
|
|
l3dss1_status_send(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
u_char tmp[16];
|
|
u_char *p = tmp;
|
|
int l;
|
|
struct sk_buff *skb;
|
|
|
|
MsgHead(p, pc->callref, MT_STATUS);
|
|
|
|
*p++ = IE_CAUSE;
|
|
*p++ = 0x2;
|
|
*p++ = 0x80;
|
|
*p++ = pc->para.cause | 0x80;
|
|
|
|
*p++ = IE_CALL_STATE;
|
|
*p++ = 0x1;
|
|
*p++ = pc->state & 0x3f;
|
|
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
}
|
|
|
|
static void
|
|
l3dss1_msg_without_setup(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
/* This routine is called if here was no SETUP made (checks in dss1up and in
|
|
* l3dss1_setup) and a RELEASE_COMPLETE have to be sent with an error code
|
|
* MT_STATUS_ENQUIRE in the NULL state is handled too
|
|
*/
|
|
u_char tmp[16];
|
|
u_char *p = tmp;
|
|
int l;
|
|
struct sk_buff *skb;
|
|
|
|
switch (pc->para.cause) {
|
|
case 81: /* invalid callreference */
|
|
case 88: /* incomp destination */
|
|
case 96: /* mandory IE missing */
|
|
case 100: /* invalid IE contents */
|
|
case 101: /* incompatible Callstate */
|
|
MsgHead(p, pc->callref, MT_RELEASE_COMPLETE);
|
|
*p++ = IE_CAUSE;
|
|
*p++ = 0x2;
|
|
*p++ = 0x80;
|
|
*p++ = pc->para.cause | 0x80;
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "HiSax l3dss1_msg_without_setup wrong cause %d\n",
|
|
pc->para.cause);
|
|
return;
|
|
}
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
|
|
static int ie_ALERTING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1,
|
|
IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_HLC,
|
|
IE_USER_USER, -1};
|
|
static int ie_CALL_PROCEEDING[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1,
|
|
IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_HLC, -1};
|
|
static int ie_CONNECT[] = {IE_BEARER, IE_CHANNEL_ID | IE_MANDATORY_1,
|
|
IE_FACILITY, IE_PROGRESS, IE_DISPLAY, IE_DATE, IE_SIGNAL,
|
|
IE_CONNECT_PN, IE_CONNECT_SUB, IE_LLC, IE_HLC, IE_USER_USER, -1};
|
|
static int ie_CONNECT_ACKNOWLEDGE[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_SIGNAL, -1};
|
|
static int ie_DISCONNECT[] = {IE_CAUSE | IE_MANDATORY, IE_FACILITY,
|
|
IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1};
|
|
static int ie_INFORMATION[] = {IE_COMPLETE, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL,
|
|
IE_CALLED_PN, -1};
|
|
static int ie_NOTIFY[] = {IE_BEARER, IE_NOTIFY | IE_MANDATORY, IE_DISPLAY, -1};
|
|
static int ie_PROGRESS[] = {IE_BEARER, IE_CAUSE, IE_FACILITY, IE_PROGRESS |
|
|
IE_MANDATORY, IE_DISPLAY, IE_HLC, IE_USER_USER, -1};
|
|
static int ie_RELEASE[] = {IE_CAUSE | IE_MANDATORY_1, IE_FACILITY, IE_DISPLAY,
|
|
IE_SIGNAL, IE_USER_USER, -1};
|
|
/* a RELEASE_COMPLETE with errors don't require special actions
|
|
static int ie_RELEASE_COMPLETE[] = {IE_CAUSE | IE_MANDATORY_1, IE_DISPLAY, IE_SIGNAL, IE_USER_USER, -1};
|
|
*/
|
|
static int ie_RESUME_ACKNOWLEDGE[] = {IE_CHANNEL_ID| IE_MANDATORY, IE_FACILITY,
|
|
IE_DISPLAY, -1};
|
|
static int ie_RESUME_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1};
|
|
static int ie_SETUP[] = {IE_COMPLETE, IE_BEARER | IE_MANDATORY,
|
|
IE_CHANNEL_ID| IE_MANDATORY, IE_FACILITY, IE_PROGRESS,
|
|
IE_NET_FAC, IE_DISPLAY, IE_KEYPAD, IE_SIGNAL, IE_CALLING_PN,
|
|
IE_CALLING_SUB, IE_CALLED_PN, IE_CALLED_SUB, IE_REDIR_NR,
|
|
IE_LLC, IE_HLC, IE_USER_USER, -1};
|
|
static int ie_SETUP_ACKNOWLEDGE[] = {IE_CHANNEL_ID | IE_MANDATORY, IE_FACILITY,
|
|
IE_PROGRESS, IE_DISPLAY, IE_SIGNAL, -1};
|
|
static int ie_STATUS[] = {IE_CAUSE | IE_MANDATORY, IE_CALL_STATE |
|
|
IE_MANDATORY, IE_DISPLAY, -1};
|
|
static int ie_STATUS_ENQUIRY[] = {IE_DISPLAY, -1};
|
|
static int ie_SUSPEND_ACKNOWLEDGE[] = {IE_DISPLAY, IE_FACILITY, -1};
|
|
static int ie_SUSPEND_REJECT[] = {IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1};
|
|
/* not used
|
|
* static int ie_CONGESTION_CONTROL[] = {IE_CONGESTION | IE_MANDATORY,
|
|
* IE_CAUSE | IE_MANDATORY, IE_DISPLAY, -1};
|
|
* static int ie_USER_INFORMATION[] = {IE_MORE_DATA, IE_USER_USER | IE_MANDATORY, -1};
|
|
* static int ie_RESTART[] = {IE_CHANNEL_ID, IE_DISPLAY, IE_RESTART_IND |
|
|
* IE_MANDATORY, -1};
|
|
*/
|
|
static int ie_FACILITY[] = {IE_FACILITY | IE_MANDATORY, IE_DISPLAY, -1};
|
|
static int comp_required[] = {1,2,3,5,6,7,9,10,11,14,15,-1};
|
|
static int l3_valid_states[] = {0,1,2,3,4,6,7,8,9,10,11,12,15,17,19,25,-1};
|
|
|
|
struct ie_len {
|
|
int ie;
|
|
int len;
|
|
};
|
|
|
|
static
|
|
struct ie_len max_ie_len[] = {
|
|
{IE_SEGMENT, 4},
|
|
{IE_BEARER, 12},
|
|
{IE_CAUSE, 32},
|
|
{IE_CALL_ID, 10},
|
|
{IE_CALL_STATE, 3},
|
|
{IE_CHANNEL_ID, 34},
|
|
{IE_FACILITY, 255},
|
|
{IE_PROGRESS, 4},
|
|
{IE_NET_FAC, 255},
|
|
{IE_NOTIFY, 3},
|
|
{IE_DISPLAY, 82},
|
|
{IE_DATE, 8},
|
|
{IE_KEYPAD, 34},
|
|
{IE_SIGNAL, 3},
|
|
{IE_INFORATE, 6},
|
|
{IE_E2E_TDELAY, 11},
|
|
{IE_TDELAY_SEL, 5},
|
|
{IE_PACK_BINPARA, 3},
|
|
{IE_PACK_WINSIZE, 4},
|
|
{IE_PACK_SIZE, 4},
|
|
{IE_CUG, 7},
|
|
{IE_REV_CHARGE, 3},
|
|
{IE_CALLING_PN, 24},
|
|
{IE_CALLING_SUB, 23},
|
|
{IE_CALLED_PN, 24},
|
|
{IE_CALLED_SUB, 23},
|
|
{IE_REDIR_NR, 255},
|
|
{IE_TRANS_SEL, 255},
|
|
{IE_RESTART_IND, 3},
|
|
{IE_LLC, 18},
|
|
{IE_HLC, 5},
|
|
{IE_USER_USER, 131},
|
|
{-1,0},
|
|
};
|
|
|
|
static int
|
|
getmax_ie_len(u_char ie) {
|
|
int i = 0;
|
|
while (max_ie_len[i].ie != -1) {
|
|
if (max_ie_len[i].ie == ie)
|
|
return(max_ie_len[i].len);
|
|
i++;
|
|
}
|
|
return(255);
|
|
}
|
|
|
|
static int
|
|
ie_in_set(struct l3_process *pc, u_char ie, int *checklist) {
|
|
int ret = 1;
|
|
|
|
while (*checklist != -1) {
|
|
if ((*checklist & 0xff) == ie) {
|
|
if (ie & 0x80)
|
|
return(-ret);
|
|
else
|
|
return(ret);
|
|
}
|
|
ret++;
|
|
checklist++;
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
check_infoelements(struct l3_process *pc, struct sk_buff *skb, int *checklist)
|
|
{
|
|
int *cl = checklist;
|
|
u_char mt;
|
|
u_char *p, ie;
|
|
int l, newpos, oldpos;
|
|
int err_seq = 0, err_len = 0, err_compr = 0, err_ureg = 0;
|
|
u_char codeset = 0;
|
|
u_char old_codeset = 0;
|
|
u_char codelock = 1;
|
|
|
|
p = skb->data;
|
|
/* skip cr */
|
|
p++;
|
|
l = (*p++) & 0xf;
|
|
p += l;
|
|
mt = *p++;
|
|
oldpos = 0;
|
|
while ((p - skb->data) < skb->len) {
|
|
if ((*p & 0xf0) == 0x90) { /* shift codeset */
|
|
old_codeset = codeset;
|
|
codeset = *p & 7;
|
|
if (*p & 0x08)
|
|
codelock = 0;
|
|
else
|
|
codelock = 1;
|
|
if (pc->debug & L3_DEB_CHECK)
|
|
l3_debug(pc->st, "check IE shift%scodeset %d->%d",
|
|
codelock ? " locking ": " ", old_codeset, codeset);
|
|
p++;
|
|
continue;
|
|
}
|
|
if (!codeset) { /* only codeset 0 */
|
|
if ((newpos = ie_in_set(pc, *p, cl))) {
|
|
if (newpos > 0) {
|
|
if (newpos < oldpos)
|
|
err_seq++;
|
|
else
|
|
oldpos = newpos;
|
|
}
|
|
} else {
|
|
if (ie_in_set(pc, *p, comp_required))
|
|
err_compr++;
|
|
else
|
|
err_ureg++;
|
|
}
|
|
}
|
|
ie = *p++;
|
|
if (ie & 0x80) {
|
|
l = 1;
|
|
} else {
|
|
l = *p++;
|
|
p += l;
|
|
l += 2;
|
|
}
|
|
if (!codeset && (l > getmax_ie_len(ie)))
|
|
err_len++;
|
|
if (!codelock) {
|
|
if (pc->debug & L3_DEB_CHECK)
|
|
l3_debug(pc->st, "check IE shift back codeset %d->%d",
|
|
codeset, old_codeset);
|
|
codeset = old_codeset;
|
|
codelock = 1;
|
|
}
|
|
}
|
|
if (err_compr | err_ureg | err_len | err_seq) {
|
|
if (pc->debug & L3_DEB_CHECK)
|
|
l3_debug(pc->st, "check IE MT(%x) %d/%d/%d/%d",
|
|
mt, err_compr, err_ureg, err_len, err_seq);
|
|
if (err_compr)
|
|
return(ERR_IE_COMPREHENSION);
|
|
if (err_ureg)
|
|
return(ERR_IE_UNRECOGNIZED);
|
|
if (err_len)
|
|
return(ERR_IE_LENGTH);
|
|
if (err_seq)
|
|
return(ERR_IE_SEQUENCE);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
/* verify if a message type exists and contain no IE error */
|
|
static int
|
|
l3dss1_check_messagetype_validity(struct l3_process *pc, int mt, void *arg)
|
|
{
|
|
switch (mt) {
|
|
case MT_ALERTING:
|
|
case MT_CALL_PROCEEDING:
|
|
case MT_CONNECT:
|
|
case MT_CONNECT_ACKNOWLEDGE:
|
|
case MT_DISCONNECT:
|
|
case MT_INFORMATION:
|
|
case MT_FACILITY:
|
|
case MT_NOTIFY:
|
|
case MT_PROGRESS:
|
|
case MT_RELEASE:
|
|
case MT_RELEASE_COMPLETE:
|
|
case MT_SETUP:
|
|
case MT_SETUP_ACKNOWLEDGE:
|
|
case MT_RESUME_ACKNOWLEDGE:
|
|
case MT_RESUME_REJECT:
|
|
case MT_SUSPEND_ACKNOWLEDGE:
|
|
case MT_SUSPEND_REJECT:
|
|
case MT_USER_INFORMATION:
|
|
case MT_RESTART:
|
|
case MT_RESTART_ACKNOWLEDGE:
|
|
case MT_CONGESTION_CONTROL:
|
|
case MT_STATUS:
|
|
case MT_STATUS_ENQUIRY:
|
|
if (pc->debug & L3_DEB_CHECK)
|
|
l3_debug(pc->st, "l3dss1_check_messagetype_validity mt(%x) OK", mt);
|
|
break;
|
|
case MT_RESUME: /* RESUME only in user->net */
|
|
case MT_SUSPEND: /* SUSPEND only in user->net */
|
|
default:
|
|
if (pc->debug & (L3_DEB_CHECK | L3_DEB_WARN))
|
|
l3_debug(pc->st, "l3dss1_check_messagetype_validity mt(%x) fail", mt);
|
|
pc->para.cause = 97;
|
|
l3dss1_status_send(pc, 0, NULL);
|
|
return(1);
|
|
}
|
|
return(0);
|
|
}
|
|
|
|
static void
|
|
l3dss1_std_ie_err(struct l3_process *pc, int ret) {
|
|
|
|
if (pc->debug & L3_DEB_CHECK)
|
|
l3_debug(pc->st, "check_infoelements ret %d", ret);
|
|
switch(ret) {
|
|
case 0:
|
|
break;
|
|
case ERR_IE_COMPREHENSION:
|
|
pc->para.cause = 96;
|
|
l3dss1_status_send(pc, 0, NULL);
|
|
break;
|
|
case ERR_IE_UNRECOGNIZED:
|
|
pc->para.cause = 99;
|
|
l3dss1_status_send(pc, 0, NULL);
|
|
break;
|
|
case ERR_IE_LENGTH:
|
|
pc->para.cause = 100;
|
|
l3dss1_status_send(pc, 0, NULL);
|
|
break;
|
|
case ERR_IE_SEQUENCE:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
l3dss1_get_channel_id(struct l3_process *pc, struct sk_buff *skb) {
|
|
u_char *p;
|
|
|
|
p = skb->data;
|
|
if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) {
|
|
p++;
|
|
if (*p != 1) { /* len for BRI = 1 */
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "wrong chid len %d", *p);
|
|
return (-2);
|
|
}
|
|
p++;
|
|
if (*p & 0x60) { /* only base rate interface */
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "wrong chid %x", *p);
|
|
return (-3);
|
|
}
|
|
return(*p & 0x3);
|
|
} else
|
|
return(-1);
|
|
}
|
|
|
|
static int
|
|
l3dss1_get_cause(struct l3_process *pc, struct sk_buff *skb) {
|
|
u_char l, i=0;
|
|
u_char *p;
|
|
|
|
p = skb->data;
|
|
pc->para.cause = 31;
|
|
pc->para.loc = 0;
|
|
if ((p = findie(p, skb->len, IE_CAUSE, 0))) {
|
|
p++;
|
|
l = *p++;
|
|
if (l>30)
|
|
return(1);
|
|
if (l) {
|
|
pc->para.loc = *p++;
|
|
l--;
|
|
} else {
|
|
return(2);
|
|
}
|
|
if (l && !(pc->para.loc & 0x80)) {
|
|
l--;
|
|
p++; /* skip recommendation */
|
|
}
|
|
if (l) {
|
|
pc->para.cause = *p++;
|
|
l--;
|
|
if (!(pc->para.cause & 0x80))
|
|
return(3);
|
|
} else
|
|
return(4);
|
|
while (l && (i<6)) {
|
|
pc->para.diag[i++] = *p++;
|
|
l--;
|
|
}
|
|
} else
|
|
return(-1);
|
|
return(0);
|
|
}
|
|
|
|
static void
|
|
l3dss1_msg_with_uus(struct l3_process *pc, u_char cmd)
|
|
{
|
|
struct sk_buff *skb;
|
|
u_char tmp[16+40];
|
|
u_char *p = tmp;
|
|
int l;
|
|
|
|
MsgHead(p, pc->callref, cmd);
|
|
|
|
if (pc->prot.dss1.uus1_data[0])
|
|
{ *p++ = IE_USER_USER; /* UUS info element */
|
|
*p++ = strlen(pc->prot.dss1.uus1_data) + 1;
|
|
*p++ = 0x04; /* IA5 chars */
|
|
strcpy(p,pc->prot.dss1.uus1_data);
|
|
p += strlen(pc->prot.dss1.uus1_data);
|
|
pc->prot.dss1.uus1_data[0] = '\0';
|
|
}
|
|
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
} /* l3dss1_msg_with_uus */
|
|
|
|
static void
|
|
l3dss1_release_req(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
StopAllL3Timer(pc);
|
|
newl3state(pc, 19);
|
|
if (!pc->prot.dss1.uus1_data[0])
|
|
l3dss1_message(pc, MT_RELEASE);
|
|
else
|
|
l3dss1_msg_with_uus(pc, MT_RELEASE);
|
|
L3AddTimer(&pc->timer, T308, CC_T308_1);
|
|
}
|
|
|
|
static void
|
|
l3dss1_release_cmpl(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int ret;
|
|
|
|
if ((ret = l3dss1_get_cause(pc, skb))>0) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "RELCMPL get_cause ret(%d)",ret);
|
|
} else if (ret < 0)
|
|
pc->para.cause = NO_CAUSE;
|
|
StopAllL3Timer(pc);
|
|
newl3state(pc, 0);
|
|
pc->st->l3.l3l4(pc->st, CC_RELEASE | CONFIRM, pc);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
|
|
#ifdef EXT_BEARER_CAPS
|
|
|
|
static u_char *
|
|
EncodeASyncParams(u_char * p, u_char si2)
|
|
{ // 7c 06 88 90 21 42 00 bb
|
|
|
|
p[0] = 0;
|
|
p[1] = 0x40; // Intermediate rate: 16 kbit/s jj 2000.02.19
|
|
p[2] = 0x80;
|
|
if (si2 & 32) // 7 data bits
|
|
|
|
p[2] += 16;
|
|
else // 8 data bits
|
|
|
|
p[2] += 24;
|
|
|
|
if (si2 & 16) // 2 stop bits
|
|
|
|
p[2] += 96;
|
|
else // 1 stop bit
|
|
|
|
p[2] += 32;
|
|
|
|
if (si2 & 8) // even parity
|
|
|
|
p[2] += 2;
|
|
else // no parity
|
|
|
|
p[2] += 3;
|
|
|
|
switch (si2 & 0x07) {
|
|
case 0:
|
|
p[0] = 66; // 1200 bit/s
|
|
|
|
break;
|
|
case 1:
|
|
p[0] = 88; // 1200/75 bit/s
|
|
|
|
break;
|
|
case 2:
|
|
p[0] = 87; // 75/1200 bit/s
|
|
|
|
break;
|
|
case 3:
|
|
p[0] = 67; // 2400 bit/s
|
|
|
|
break;
|
|
case 4:
|
|
p[0] = 69; // 4800 bit/s
|
|
|
|
break;
|
|
case 5:
|
|
p[0] = 72; // 9600 bit/s
|
|
|
|
break;
|
|
case 6:
|
|
p[0] = 73; // 14400 bit/s
|
|
|
|
break;
|
|
case 7:
|
|
p[0] = 75; // 19200 bit/s
|
|
|
|
break;
|
|
}
|
|
return p + 3;
|
|
}
|
|
|
|
static u_char
|
|
EncodeSyncParams(u_char si2, u_char ai)
|
|
{
|
|
|
|
switch (si2) {
|
|
case 0:
|
|
return ai + 2; // 1200 bit/s
|
|
|
|
case 1:
|
|
return ai + 24; // 1200/75 bit/s
|
|
|
|
case 2:
|
|
return ai + 23; // 75/1200 bit/s
|
|
|
|
case 3:
|
|
return ai + 3; // 2400 bit/s
|
|
|
|
case 4:
|
|
return ai + 5; // 4800 bit/s
|
|
|
|
case 5:
|
|
return ai + 8; // 9600 bit/s
|
|
|
|
case 6:
|
|
return ai + 9; // 14400 bit/s
|
|
|
|
case 7:
|
|
return ai + 11; // 19200 bit/s
|
|
|
|
case 8:
|
|
return ai + 14; // 48000 bit/s
|
|
|
|
case 9:
|
|
return ai + 15; // 56000 bit/s
|
|
|
|
case 15:
|
|
return ai + 40; // negotiate bit/s
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return ai;
|
|
}
|
|
|
|
|
|
static u_char
|
|
DecodeASyncParams(u_char si2, u_char * p)
|
|
{
|
|
u_char info;
|
|
|
|
switch (p[5]) {
|
|
case 66: // 1200 bit/s
|
|
|
|
break; // si2 don't change
|
|
|
|
case 88: // 1200/75 bit/s
|
|
|
|
si2 += 1;
|
|
break;
|
|
case 87: // 75/1200 bit/s
|
|
|
|
si2 += 2;
|
|
break;
|
|
case 67: // 2400 bit/s
|
|
|
|
si2 += 3;
|
|
break;
|
|
case 69: // 4800 bit/s
|
|
|
|
si2 += 4;
|
|
break;
|
|
case 72: // 9600 bit/s
|
|
|
|
si2 += 5;
|
|
break;
|
|
case 73: // 14400 bit/s
|
|
|
|
si2 += 6;
|
|
break;
|
|
case 75: // 19200 bit/s
|
|
|
|
si2 += 7;
|
|
break;
|
|
}
|
|
|
|
info = p[7] & 0x7f;
|
|
if ((info & 16) && (!(info & 8))) // 7 data bits
|
|
|
|
si2 += 32; // else 8 data bits
|
|
|
|
if ((info & 96) == 96) // 2 stop bits
|
|
|
|
si2 += 16; // else 1 stop bit
|
|
|
|
if ((info & 2) && (!(info & 1))) // even parity
|
|
|
|
si2 += 8; // else no parity
|
|
|
|
return si2;
|
|
}
|
|
|
|
|
|
static u_char
|
|
DecodeSyncParams(u_char si2, u_char info)
|
|
{
|
|
info &= 0x7f;
|
|
switch (info) {
|
|
case 40: // bit/s negotiation failed ai := 165 not 175!
|
|
|
|
return si2 + 15;
|
|
case 15: // 56000 bit/s failed, ai := 0 not 169 !
|
|
|
|
return si2 + 9;
|
|
case 14: // 48000 bit/s
|
|
|
|
return si2 + 8;
|
|
case 11: // 19200 bit/s
|
|
|
|
return si2 + 7;
|
|
case 9: // 14400 bit/s
|
|
|
|
return si2 + 6;
|
|
case 8: // 9600 bit/s
|
|
|
|
return si2 + 5;
|
|
case 5: // 4800 bit/s
|
|
|
|
return si2 + 4;
|
|
case 3: // 2400 bit/s
|
|
|
|
return si2 + 3;
|
|
case 23: // 75/1200 bit/s
|
|
|
|
return si2 + 2;
|
|
case 24: // 1200/75 bit/s
|
|
|
|
return si2 + 1;
|
|
default: // 1200 bit/s
|
|
|
|
return si2;
|
|
}
|
|
}
|
|
|
|
static u_char
|
|
DecodeSI2(struct sk_buff *skb)
|
|
{
|
|
u_char *p; //, *pend=skb->data + skb->len;
|
|
|
|
if ((p = findie(skb->data, skb->len, 0x7c, 0))) {
|
|
switch (p[4] & 0x0f) {
|
|
case 0x01:
|
|
if (p[1] == 0x04) // sync. Bitratenadaption
|
|
|
|
return DecodeSyncParams(160, p[5]); // V.110/X.30
|
|
|
|
else if (p[1] == 0x06) // async. Bitratenadaption
|
|
|
|
return DecodeASyncParams(192, p); // V.110/X.30
|
|
|
|
break;
|
|
case 0x08: // if (p[5] == 0x02) // sync. Bitratenadaption
|
|
if (p[1] > 3)
|
|
return DecodeSyncParams(176, p[5]); // V.120
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
static void
|
|
l3dss1_setup_req(struct l3_process *pc, u_char pr,
|
|
void *arg)
|
|
{
|
|
struct sk_buff *skb;
|
|
u_char tmp[128];
|
|
u_char *p = tmp;
|
|
u_char channel = 0;
|
|
|
|
u_char send_keypad;
|
|
u_char screen = 0x80;
|
|
u_char *teln;
|
|
u_char *msn;
|
|
u_char *sub;
|
|
u_char *sp;
|
|
int l;
|
|
|
|
MsgHead(p, pc->callref, MT_SETUP);
|
|
|
|
teln = pc->para.setup.phone;
|
|
#ifndef CONFIG_HISAX_NO_KEYPAD
|
|
send_keypad = (strchr(teln,'*') || strchr(teln,'#')) ? 1 : 0;
|
|
#else
|
|
send_keypad = 0;
|
|
#endif
|
|
#ifndef CONFIG_HISAX_NO_SENDCOMPLETE
|
|
if (!send_keypad)
|
|
*p++ = 0xa1; /* complete indicator */
|
|
#endif
|
|
/*
|
|
* Set Bearer Capability, Map info from 1TR6-convention to EDSS1
|
|
*/
|
|
switch (pc->para.setup.si1) {
|
|
case 1: /* Telephony */
|
|
*p++ = IE_BEARER;
|
|
*p++ = 0x3; /* Length */
|
|
*p++ = 0x90; /* Coding Std. CCITT, 3.1 kHz audio */
|
|
*p++ = 0x90; /* Circuit-Mode 64kbps */
|
|
*p++ = 0xa3; /* A-Law Audio */
|
|
break;
|
|
case 5: /* Datatransmission 64k, BTX */
|
|
case 7: /* Datatransmission 64k */
|
|
default:
|
|
*p++ = IE_BEARER;
|
|
*p++ = 0x2; /* Length */
|
|
*p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */
|
|
*p++ = 0x90; /* Circuit-Mode 64kbps */
|
|
break;
|
|
}
|
|
|
|
if (send_keypad) {
|
|
*p++ = IE_KEYPAD;
|
|
*p++ = strlen(teln);
|
|
while (*teln)
|
|
*p++ = (*teln++) & 0x7F;
|
|
}
|
|
|
|
/*
|
|
* What about info2? Mapping to High-Layer-Compatibility?
|
|
*/
|
|
if ((*teln) && (!send_keypad)) {
|
|
/* parse number for special things */
|
|
if (!isdigit(*teln)) {
|
|
switch (0x5f & *teln) {
|
|
case 'C':
|
|
channel = 0x08;
|
|
case 'P':
|
|
channel |= 0x80;
|
|
teln++;
|
|
if (*teln == '1')
|
|
channel |= 0x01;
|
|
else
|
|
channel |= 0x02;
|
|
break;
|
|
case 'R':
|
|
screen = 0xA0;
|
|
break;
|
|
case 'D':
|
|
screen = 0x80;
|
|
break;
|
|
|
|
default:
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "Wrong MSN Code");
|
|
break;
|
|
}
|
|
teln++;
|
|
}
|
|
}
|
|
if (channel) {
|
|
*p++ = IE_CHANNEL_ID;
|
|
*p++ = 1;
|
|
*p++ = channel;
|
|
}
|
|
msn = pc->para.setup.eazmsn;
|
|
sub = NULL;
|
|
sp = msn;
|
|
while (*sp) {
|
|
if ('.' == *sp) {
|
|
sub = sp;
|
|
*sp = 0;
|
|
} else
|
|
sp++;
|
|
}
|
|
if (*msn) {
|
|
*p++ = IE_CALLING_PN;
|
|
*p++ = strlen(msn) + (screen ? 2 : 1);
|
|
/* Classify as AnyPref. */
|
|
if (screen) {
|
|
*p++ = 0x01; /* Ext = '0'B, Type = '000'B, Plan = '0001'B. */
|
|
*p++ = screen;
|
|
} else
|
|
*p++ = 0x81; /* Ext = '1'B, Type = '000'B, Plan = '0001'B. */
|
|
while (*msn)
|
|
*p++ = *msn++ & 0x7f;
|
|
}
|
|
if (sub) {
|
|
*sub++ = '.';
|
|
*p++ = IE_CALLING_SUB;
|
|
*p++ = strlen(sub) + 2;
|
|
*p++ = 0x80; /* NSAP coded */
|
|
*p++ = 0x50; /* local IDI format */
|
|
while (*sub)
|
|
*p++ = *sub++ & 0x7f;
|
|
}
|
|
sub = NULL;
|
|
sp = teln;
|
|
while (*sp) {
|
|
if ('.' == *sp) {
|
|
sub = sp;
|
|
*sp = 0;
|
|
} else
|
|
sp++;
|
|
}
|
|
|
|
if (!send_keypad) {
|
|
*p++ = IE_CALLED_PN;
|
|
*p++ = strlen(teln) + 1;
|
|
/* Classify as AnyPref. */
|
|
*p++ = 0x81; /* Ext = '1'B, Type = '000'B, Plan = '0001'B. */
|
|
while (*teln)
|
|
*p++ = *teln++ & 0x7f;
|
|
|
|
if (sub) {
|
|
*sub++ = '.';
|
|
*p++ = IE_CALLED_SUB;
|
|
*p++ = strlen(sub) + 2;
|
|
*p++ = 0x80; /* NSAP coded */
|
|
*p++ = 0x50; /* local IDI format */
|
|
while (*sub)
|
|
*p++ = *sub++ & 0x7f;
|
|
}
|
|
}
|
|
#ifdef EXT_BEARER_CAPS
|
|
if ((pc->para.setup.si2 >= 160) && (pc->para.setup.si2 <= 175)) { // sync. Bitratenadaption, V.110/X.30
|
|
|
|
*p++ = IE_LLC;
|
|
*p++ = 0x04;
|
|
*p++ = 0x88;
|
|
*p++ = 0x90;
|
|
*p++ = 0x21;
|
|
*p++ = EncodeSyncParams(pc->para.setup.si2 - 160, 0x80);
|
|
} else if ((pc->para.setup.si2 >= 176) && (pc->para.setup.si2 <= 191)) { // sync. Bitratenadaption, V.120
|
|
|
|
*p++ = IE_LLC;
|
|
*p++ = 0x05;
|
|
*p++ = 0x88;
|
|
*p++ = 0x90;
|
|
*p++ = 0x28;
|
|
*p++ = EncodeSyncParams(pc->para.setup.si2 - 176, 0);
|
|
*p++ = 0x82;
|
|
} else if (pc->para.setup.si2 >= 192) { // async. Bitratenadaption, V.110/X.30
|
|
|
|
*p++ = IE_LLC;
|
|
*p++ = 0x06;
|
|
*p++ = 0x88;
|
|
*p++ = 0x90;
|
|
*p++ = 0x21;
|
|
p = EncodeASyncParams(p, pc->para.setup.si2 - 192);
|
|
#ifndef CONFIG_HISAX_NO_LLC
|
|
} else {
|
|
switch (pc->para.setup.si1) {
|
|
case 1: /* Telephony */
|
|
*p++ = IE_LLC;
|
|
*p++ = 0x3; /* Length */
|
|
*p++ = 0x90; /* Coding Std. CCITT, 3.1 kHz audio */
|
|
*p++ = 0x90; /* Circuit-Mode 64kbps */
|
|
*p++ = 0xa3; /* A-Law Audio */
|
|
break;
|
|
case 5: /* Datatransmission 64k, BTX */
|
|
case 7: /* Datatransmission 64k */
|
|
default:
|
|
*p++ = IE_LLC;
|
|
*p++ = 0x2; /* Length */
|
|
*p++ = 0x88; /* Coding Std. CCITT, unrestr. dig. Inform. */
|
|
*p++ = 0x90; /* Circuit-Mode 64kbps */
|
|
break;
|
|
}
|
|
#endif
|
|
}
|
|
#endif
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
L3DelTimer(&pc->timer);
|
|
L3AddTimer(&pc->timer, T303, CC_T303);
|
|
newl3state(pc, 1);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
}
|
|
|
|
static void
|
|
l3dss1_call_proc(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int id, ret;
|
|
|
|
if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) {
|
|
if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "setup answer with wrong chid %x", id);
|
|
pc->para.cause = 100;
|
|
l3dss1_status_send(pc, pr, NULL);
|
|
return;
|
|
}
|
|
pc->para.bchannel = id;
|
|
} else if (1 == pc->state) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "setup answer wrong chid (ret %d)", id);
|
|
if (id == -1)
|
|
pc->para.cause = 96;
|
|
else
|
|
pc->para.cause = 100;
|
|
l3dss1_status_send(pc, pr, NULL);
|
|
return;
|
|
}
|
|
/* Now we are on none mandatory IEs */
|
|
ret = check_infoelements(pc, skb, ie_CALL_PROCEEDING);
|
|
if (ERR_IE_COMPREHENSION == ret) {
|
|
l3dss1_std_ie_err(pc, ret);
|
|
return;
|
|
}
|
|
L3DelTimer(&pc->timer);
|
|
newl3state(pc, 3);
|
|
L3AddTimer(&pc->timer, T310, CC_T310);
|
|
if (ret) /* STATUS for none mandatory IE errors after actions are taken */
|
|
l3dss1_std_ie_err(pc, ret);
|
|
pc->st->l3.l3l4(pc->st, CC_PROCEEDING | INDICATION, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_setup_ack(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int id, ret;
|
|
|
|
if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) {
|
|
if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "setup answer with wrong chid %x", id);
|
|
pc->para.cause = 100;
|
|
l3dss1_status_send(pc, pr, NULL);
|
|
return;
|
|
}
|
|
pc->para.bchannel = id;
|
|
} else {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "setup answer wrong chid (ret %d)", id);
|
|
if (id == -1)
|
|
pc->para.cause = 96;
|
|
else
|
|
pc->para.cause = 100;
|
|
l3dss1_status_send(pc, pr, NULL);
|
|
return;
|
|
}
|
|
/* Now we are on none mandatory IEs */
|
|
ret = check_infoelements(pc, skb, ie_SETUP_ACKNOWLEDGE);
|
|
if (ERR_IE_COMPREHENSION == ret) {
|
|
l3dss1_std_ie_err(pc, ret);
|
|
return;
|
|
}
|
|
L3DelTimer(&pc->timer);
|
|
newl3state(pc, 2);
|
|
L3AddTimer(&pc->timer, T304, CC_T304);
|
|
if (ret) /* STATUS for none mandatory IE errors after actions are taken */
|
|
l3dss1_std_ie_err(pc, ret);
|
|
pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_disconnect(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
u_char *p;
|
|
int ret;
|
|
u_char cause = 0;
|
|
|
|
StopAllL3Timer(pc);
|
|
if ((ret = l3dss1_get_cause(pc, skb))) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "DISC get_cause ret(%d)", ret);
|
|
if (ret < 0)
|
|
cause = 96;
|
|
else if (ret > 0)
|
|
cause = 100;
|
|
}
|
|
if ((p = findie(skb->data, skb->len, IE_FACILITY, 0)))
|
|
l3dss1_parse_facility(pc->st, pc, pc->callref, p);
|
|
ret = check_infoelements(pc, skb, ie_DISCONNECT);
|
|
if (ERR_IE_COMPREHENSION == ret)
|
|
cause = 96;
|
|
else if ((!cause) && (ERR_IE_UNRECOGNIZED == ret))
|
|
cause = 99;
|
|
ret = pc->state;
|
|
newl3state(pc, 12);
|
|
if (cause)
|
|
newl3state(pc, 19);
|
|
if (11 != ret)
|
|
pc->st->l3.l3l4(pc->st, CC_DISCONNECT | INDICATION, pc);
|
|
else if (!cause)
|
|
l3dss1_release_req(pc, pr, NULL);
|
|
if (cause) {
|
|
l3dss1_message_cause(pc, MT_RELEASE, cause);
|
|
L3AddTimer(&pc->timer, T308, CC_T308_1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
l3dss1_connect(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int ret;
|
|
|
|
ret = check_infoelements(pc, skb, ie_CONNECT);
|
|
if (ERR_IE_COMPREHENSION == ret) {
|
|
l3dss1_std_ie_err(pc, ret);
|
|
return;
|
|
}
|
|
L3DelTimer(&pc->timer); /* T310 */
|
|
newl3state(pc, 10);
|
|
pc->para.chargeinfo = 0;
|
|
/* here should inserted COLP handling KKe */
|
|
if (ret)
|
|
l3dss1_std_ie_err(pc, ret);
|
|
pc->st->l3.l3l4(pc->st, CC_SETUP | CONFIRM, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_alerting(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int ret;
|
|
|
|
ret = check_infoelements(pc, skb, ie_ALERTING);
|
|
if (ERR_IE_COMPREHENSION == ret) {
|
|
l3dss1_std_ie_err(pc, ret);
|
|
return;
|
|
}
|
|
L3DelTimer(&pc->timer); /* T304 */
|
|
newl3state(pc, 4);
|
|
if (ret)
|
|
l3dss1_std_ie_err(pc, ret);
|
|
pc->st->l3.l3l4(pc->st, CC_ALERTING | INDICATION, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_setup(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
u_char *p;
|
|
int bcfound = 0;
|
|
char tmp[80];
|
|
struct sk_buff *skb = arg;
|
|
int id;
|
|
int err = 0;
|
|
|
|
/*
|
|
* Bearer Capabilities
|
|
*/
|
|
p = skb->data;
|
|
/* only the first occurence 'll be detected ! */
|
|
if ((p = findie(p, skb->len, 0x04, 0))) {
|
|
if ((p[1] < 2) || (p[1] > 11))
|
|
err = 1;
|
|
else {
|
|
pc->para.setup.si2 = 0;
|
|
switch (p[2] & 0x7f) {
|
|
case 0x00: /* Speech */
|
|
case 0x10: /* 3.1 Khz audio */
|
|
pc->para.setup.si1 = 1;
|
|
break;
|
|
case 0x08: /* Unrestricted digital information */
|
|
pc->para.setup.si1 = 7;
|
|
/* JIM, 05.11.97 I wanna set service indicator 2 */
|
|
#ifdef EXT_BEARER_CAPS
|
|
pc->para.setup.si2 = DecodeSI2(skb);
|
|
#endif
|
|
break;
|
|
case 0x09: /* Restricted digital information */
|
|
pc->para.setup.si1 = 2;
|
|
break;
|
|
case 0x11:
|
|
/* Unrestr. digital information with
|
|
* tones/announcements ( or 7 kHz audio
|
|
*/
|
|
pc->para.setup.si1 = 3;
|
|
break;
|
|
case 0x18: /* Video */
|
|
pc->para.setup.si1 = 4;
|
|
break;
|
|
default:
|
|
err = 2;
|
|
break;
|
|
}
|
|
switch (p[3] & 0x7f) {
|
|
case 0x40: /* packed mode */
|
|
pc->para.setup.si1 = 8;
|
|
break;
|
|
case 0x10: /* 64 kbit */
|
|
case 0x11: /* 2*64 kbit */
|
|
case 0x13: /* 384 kbit */
|
|
case 0x15: /* 1536 kbit */
|
|
case 0x17: /* 1920 kbit */
|
|
pc->para.moderate = p[3] & 0x7f;
|
|
break;
|
|
default:
|
|
err = 3;
|
|
break;
|
|
}
|
|
}
|
|
if (pc->debug & L3_DEB_SI)
|
|
l3_debug(pc->st, "SI=%d, AI=%d",
|
|
pc->para.setup.si1, pc->para.setup.si2);
|
|
if (err) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "setup with wrong bearer(l=%d:%x,%x)",
|
|
p[1], p[2], p[3]);
|
|
pc->para.cause = 100;
|
|
l3dss1_msg_without_setup(pc, pr, NULL);
|
|
return;
|
|
}
|
|
} else {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "setup without bearer capabilities");
|
|
/* ETS 300-104 1.3.3 */
|
|
pc->para.cause = 96;
|
|
l3dss1_msg_without_setup(pc, pr, NULL);
|
|
return;
|
|
}
|
|
/*
|
|
* Channel Identification
|
|
*/
|
|
if ((id = l3dss1_get_channel_id(pc, skb)) >= 0) {
|
|
if ((pc->para.bchannel = id)) {
|
|
if ((3 == id) && (0x10 == pc->para.moderate)) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "setup with wrong chid %x",
|
|
id);
|
|
pc->para.cause = 100;
|
|
l3dss1_msg_without_setup(pc, pr, NULL);
|
|
return;
|
|
}
|
|
bcfound++;
|
|
} else
|
|
{ if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "setup without bchannel, call waiting");
|
|
bcfound++;
|
|
}
|
|
} else {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "setup with wrong chid ret %d", id);
|
|
if (id == -1)
|
|
pc->para.cause = 96;
|
|
else
|
|
pc->para.cause = 100;
|
|
l3dss1_msg_without_setup(pc, pr, NULL);
|
|
return;
|
|
}
|
|
/* Now we are on none mandatory IEs */
|
|
err = check_infoelements(pc, skb, ie_SETUP);
|
|
if (ERR_IE_COMPREHENSION == err) {
|
|
pc->para.cause = 96;
|
|
l3dss1_msg_without_setup(pc, pr, NULL);
|
|
return;
|
|
}
|
|
p = skb->data;
|
|
if ((p = findie(p, skb->len, 0x70, 0)))
|
|
iecpy(pc->para.setup.eazmsn, p, 1);
|
|
else
|
|
pc->para.setup.eazmsn[0] = 0;
|
|
|
|
p = skb->data;
|
|
if ((p = findie(p, skb->len, 0x71, 0))) {
|
|
/* Called party subaddress */
|
|
if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) {
|
|
tmp[0] = '.';
|
|
iecpy(&tmp[1], p, 2);
|
|
strcat(pc->para.setup.eazmsn, tmp);
|
|
} else if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "wrong called subaddress");
|
|
}
|
|
p = skb->data;
|
|
if ((p = findie(p, skb->len, 0x6c, 0))) {
|
|
pc->para.setup.plan = p[2];
|
|
if (p[2] & 0x80) {
|
|
iecpy(pc->para.setup.phone, p, 1);
|
|
pc->para.setup.screen = 0;
|
|
} else {
|
|
iecpy(pc->para.setup.phone, p, 2);
|
|
pc->para.setup.screen = p[3];
|
|
}
|
|
} else {
|
|
pc->para.setup.phone[0] = 0;
|
|
pc->para.setup.plan = 0;
|
|
pc->para.setup.screen = 0;
|
|
}
|
|
p = skb->data;
|
|
if ((p = findie(p, skb->len, 0x6d, 0))) {
|
|
/* Calling party subaddress */
|
|
if ((p[1] >= 2) && (p[2] == 0x80) && (p[3] == 0x50)) {
|
|
tmp[0] = '.';
|
|
iecpy(&tmp[1], p, 2);
|
|
strcat(pc->para.setup.phone, tmp);
|
|
} else if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "wrong calling subaddress");
|
|
}
|
|
newl3state(pc, 6);
|
|
if (err) /* STATUS for none mandatory IE errors after actions are taken */
|
|
l3dss1_std_ie_err(pc, err);
|
|
pc->st->l3.l3l4(pc->st, CC_SETUP | INDICATION, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_reset(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_disconnect_req(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb;
|
|
u_char tmp[16+40];
|
|
u_char *p = tmp;
|
|
int l;
|
|
u_char cause = 16;
|
|
|
|
if (pc->para.cause != NO_CAUSE)
|
|
cause = pc->para.cause;
|
|
|
|
StopAllL3Timer(pc);
|
|
|
|
MsgHead(p, pc->callref, MT_DISCONNECT);
|
|
|
|
*p++ = IE_CAUSE;
|
|
*p++ = 0x2;
|
|
*p++ = 0x80;
|
|
*p++ = cause | 0x80;
|
|
|
|
if (pc->prot.dss1.uus1_data[0])
|
|
{ *p++ = IE_USER_USER; /* UUS info element */
|
|
*p++ = strlen(pc->prot.dss1.uus1_data) + 1;
|
|
*p++ = 0x04; /* IA5 chars */
|
|
strcpy(p,pc->prot.dss1.uus1_data);
|
|
p += strlen(pc->prot.dss1.uus1_data);
|
|
pc->prot.dss1.uus1_data[0] = '\0';
|
|
}
|
|
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
newl3state(pc, 11);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
L3AddTimer(&pc->timer, T305, CC_T305);
|
|
}
|
|
|
|
static void
|
|
l3dss1_setup_rsp(struct l3_process *pc, u_char pr,
|
|
void *arg)
|
|
{
|
|
if (!pc->para.bchannel)
|
|
{ if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "D-chan connect for waiting call");
|
|
l3dss1_disconnect_req(pc, pr, arg);
|
|
return;
|
|
}
|
|
newl3state(pc, 8);
|
|
l3dss1_message(pc, MT_CONNECT);
|
|
L3DelTimer(&pc->timer);
|
|
L3AddTimer(&pc->timer, T313, CC_T313);
|
|
}
|
|
|
|
static void
|
|
l3dss1_connect_ack(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int ret;
|
|
|
|
ret = check_infoelements(pc, skb, ie_CONNECT_ACKNOWLEDGE);
|
|
if (ERR_IE_COMPREHENSION == ret) {
|
|
l3dss1_std_ie_err(pc, ret);
|
|
return;
|
|
}
|
|
newl3state(pc, 10);
|
|
L3DelTimer(&pc->timer);
|
|
if (ret)
|
|
l3dss1_std_ie_err(pc, ret);
|
|
pc->st->l3.l3l4(pc->st, CC_SETUP_COMPL | INDICATION, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_reject_req(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb;
|
|
u_char tmp[16];
|
|
u_char *p = tmp;
|
|
int l;
|
|
u_char cause = 21;
|
|
|
|
if (pc->para.cause != NO_CAUSE)
|
|
cause = pc->para.cause;
|
|
|
|
MsgHead(p, pc->callref, MT_RELEASE_COMPLETE);
|
|
|
|
*p++ = IE_CAUSE;
|
|
*p++ = 0x2;
|
|
*p++ = 0x80;
|
|
*p++ = cause | 0x80;
|
|
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
|
|
newl3state(pc, 0);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_release(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
u_char *p;
|
|
int ret, cause=0;
|
|
|
|
StopAllL3Timer(pc);
|
|
if ((ret = l3dss1_get_cause(pc, skb))>0) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "REL get_cause ret(%d)", ret);
|
|
} else if (ret<0)
|
|
pc->para.cause = NO_CAUSE;
|
|
if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) {
|
|
l3dss1_parse_facility(pc->st, pc, pc->callref, p);
|
|
}
|
|
if ((ret<0) && (pc->state != 11))
|
|
cause = 96;
|
|
else if (ret>0)
|
|
cause = 100;
|
|
ret = check_infoelements(pc, skb, ie_RELEASE);
|
|
if (ERR_IE_COMPREHENSION == ret)
|
|
cause = 96;
|
|
else if ((ERR_IE_UNRECOGNIZED == ret) && (!cause))
|
|
cause = 99;
|
|
if (cause)
|
|
l3dss1_message_cause(pc, MT_RELEASE_COMPLETE, cause);
|
|
else
|
|
l3dss1_message(pc, MT_RELEASE_COMPLETE);
|
|
pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
|
|
newl3state(pc, 0);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_alert_req(struct l3_process *pc, u_char pr,
|
|
void *arg)
|
|
{
|
|
newl3state(pc, 7);
|
|
if (!pc->prot.dss1.uus1_data[0])
|
|
l3dss1_message(pc, MT_ALERTING);
|
|
else
|
|
l3dss1_msg_with_uus(pc, MT_ALERTING);
|
|
}
|
|
|
|
static void
|
|
l3dss1_proceed_req(struct l3_process *pc, u_char pr,
|
|
void *arg)
|
|
{
|
|
newl3state(pc, 9);
|
|
l3dss1_message(pc, MT_CALL_PROCEEDING);
|
|
pc->st->l3.l3l4(pc->st, CC_PROCEED_SEND | INDICATION, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_setup_ack_req(struct l3_process *pc, u_char pr,
|
|
void *arg)
|
|
{
|
|
newl3state(pc, 25);
|
|
L3DelTimer(&pc->timer);
|
|
L3AddTimer(&pc->timer, T302, CC_T302);
|
|
l3dss1_message(pc, MT_SETUP_ACKNOWLEDGE);
|
|
}
|
|
|
|
/********************************************/
|
|
/* deliver a incoming display message to HL */
|
|
/********************************************/
|
|
static void
|
|
l3dss1_deliver_display(struct l3_process *pc, int pr, u_char *infp)
|
|
{ u_char len;
|
|
isdn_ctrl ic;
|
|
struct IsdnCardState *cs;
|
|
char *p;
|
|
|
|
if (*infp++ != IE_DISPLAY) return;
|
|
if ((len = *infp++) > 80) return; /* total length <= 82 */
|
|
if (!pc->chan) return;
|
|
|
|
p = ic.parm.display;
|
|
while (len--)
|
|
*p++ = *infp++;
|
|
*p = '\0';
|
|
ic.command = ISDN_STAT_DISPLAY;
|
|
cs = pc->st->l1.hardware;
|
|
ic.driver = cs->myid;
|
|
ic.arg = pc->chan->chan;
|
|
cs->iif.statcallb(&ic);
|
|
} /* l3dss1_deliver_display */
|
|
|
|
|
|
static void
|
|
l3dss1_progress(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int err = 0;
|
|
u_char *p;
|
|
|
|
if ((p = findie(skb->data, skb->len, IE_PROGRESS, 0))) {
|
|
if (p[1] != 2) {
|
|
err = 1;
|
|
pc->para.cause = 100;
|
|
} else if (!(p[2] & 0x70)) {
|
|
switch (p[2]) {
|
|
case 0x80:
|
|
case 0x81:
|
|
case 0x82:
|
|
case 0x84:
|
|
case 0x85:
|
|
case 0x87:
|
|
case 0x8a:
|
|
switch (p[3]) {
|
|
case 0x81:
|
|
case 0x82:
|
|
case 0x83:
|
|
case 0x84:
|
|
case 0x88:
|
|
break;
|
|
default:
|
|
err = 2;
|
|
pc->para.cause = 100;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
err = 3;
|
|
pc->para.cause = 100;
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
pc->para.cause = 96;
|
|
err = 4;
|
|
}
|
|
if (err) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "progress error %d", err);
|
|
l3dss1_status_send(pc, pr, NULL);
|
|
return;
|
|
}
|
|
/* Now we are on none mandatory IEs */
|
|
err = check_infoelements(pc, skb, ie_PROGRESS);
|
|
if (err)
|
|
l3dss1_std_ie_err(pc, err);
|
|
if (ERR_IE_COMPREHENSION != err)
|
|
pc->st->l3.l3l4(pc->st, CC_PROGRESS | INDICATION, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_notify(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int err = 0;
|
|
u_char *p;
|
|
|
|
if ((p = findie(skb->data, skb->len, IE_NOTIFY, 0))) {
|
|
if (p[1] != 1) {
|
|
err = 1;
|
|
pc->para.cause = 100;
|
|
} else {
|
|
switch (p[2]) {
|
|
case 0x80:
|
|
case 0x81:
|
|
case 0x82:
|
|
break;
|
|
default:
|
|
pc->para.cause = 100;
|
|
err = 2;
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
pc->para.cause = 96;
|
|
err = 3;
|
|
}
|
|
if (err) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "notify error %d", err);
|
|
l3dss1_status_send(pc, pr, NULL);
|
|
return;
|
|
}
|
|
/* Now we are on none mandatory IEs */
|
|
err = check_infoelements(pc, skb, ie_NOTIFY);
|
|
if (err)
|
|
l3dss1_std_ie_err(pc, err);
|
|
if (ERR_IE_COMPREHENSION != err)
|
|
pc->st->l3.l3l4(pc->st, CC_NOTIFY | INDICATION, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_status_enq(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
int ret;
|
|
struct sk_buff *skb = arg;
|
|
|
|
ret = check_infoelements(pc, skb, ie_STATUS_ENQUIRY);
|
|
l3dss1_std_ie_err(pc, ret);
|
|
pc->para.cause = 30; /* response to STATUS_ENQUIRY */
|
|
l3dss1_status_send(pc, pr, NULL);
|
|
}
|
|
|
|
static void
|
|
l3dss1_information(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
int ret;
|
|
struct sk_buff *skb = arg;
|
|
u_char *p;
|
|
char tmp[32];
|
|
|
|
ret = check_infoelements(pc, skb, ie_INFORMATION);
|
|
if (ret)
|
|
l3dss1_std_ie_err(pc, ret);
|
|
if (pc->state == 25) { /* overlap receiving */
|
|
L3DelTimer(&pc->timer);
|
|
p = skb->data;
|
|
if ((p = findie(p, skb->len, 0x70, 0))) {
|
|
iecpy(tmp, p, 1);
|
|
strcat(pc->para.setup.eazmsn, tmp);
|
|
pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc);
|
|
}
|
|
L3AddTimer(&pc->timer, T302, CC_T302);
|
|
}
|
|
}
|
|
|
|
/******************************/
|
|
/* handle deflection requests */
|
|
/******************************/
|
|
static void l3dss1_redir_req(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb;
|
|
u_char tmp[128];
|
|
u_char *p = tmp;
|
|
u_char *subp;
|
|
u_char len_phone = 0;
|
|
u_char len_sub = 0;
|
|
int l;
|
|
|
|
|
|
strcpy(pc->prot.dss1.uus1_data,pc->chan->setup.eazmsn); /* copy uus element if available */
|
|
if (!pc->chan->setup.phone[0])
|
|
{ pc->para.cause = -1;
|
|
l3dss1_disconnect_req(pc,pr,arg); /* disconnect immediately */
|
|
return;
|
|
} /* only uus */
|
|
|
|
if (pc->prot.dss1.invoke_id)
|
|
free_invoke_id(pc->st,pc->prot.dss1.invoke_id);
|
|
|
|
if (!(pc->prot.dss1.invoke_id = new_invoke_id(pc->st)))
|
|
return;
|
|
|
|
MsgHead(p, pc->callref, MT_FACILITY);
|
|
|
|
for (subp = pc->chan->setup.phone; (*subp) && (*subp != '.'); subp++) len_phone++; /* len of phone number */
|
|
if (*subp++ == '.') len_sub = strlen(subp) + 2; /* length including info subaddress element */
|
|
|
|
*p++ = 0x1c; /* Facility info element */
|
|
*p++ = len_phone + len_sub + 2 + 2 + 8 + 3 + 3; /* length of element */
|
|
*p++ = 0x91; /* remote operations protocol */
|
|
*p++ = 0xa1; /* invoke component */
|
|
|
|
*p++ = len_phone + len_sub + 2 + 2 + 8 + 3; /* length of data */
|
|
*p++ = 0x02; /* invoke id tag, integer */
|
|
*p++ = 0x01; /* length */
|
|
*p++ = pc->prot.dss1.invoke_id; /* invoke id */
|
|
*p++ = 0x02; /* operation value tag, integer */
|
|
*p++ = 0x01; /* length */
|
|
*p++ = 0x0D; /* Call Deflect */
|
|
|
|
*p++ = 0x30; /* sequence phone number */
|
|
*p++ = len_phone + 2 + 2 + 3 + len_sub; /* length */
|
|
|
|
*p++ = 0x30; /* Deflected to UserNumber */
|
|
*p++ = len_phone+2+len_sub; /* length */
|
|
*p++ = 0x80; /* NumberDigits */
|
|
*p++ = len_phone; /* length */
|
|
for (l = 0; l < len_phone; l++)
|
|
*p++ = pc->chan->setup.phone[l];
|
|
|
|
if (len_sub)
|
|
{ *p++ = 0x04; /* called party subaddress */
|
|
*p++ = len_sub - 2;
|
|
while (*subp) *p++ = *subp++;
|
|
}
|
|
|
|
*p++ = 0x01; /* screening identifier */
|
|
*p++ = 0x01;
|
|
*p++ = pc->chan->setup.screen;
|
|
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l))) return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
} /* l3dss1_redir_req */
|
|
|
|
/********************************************/
|
|
/* handle deflection request in early state */
|
|
/********************************************/
|
|
static void l3dss1_redir_req_early(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
l3dss1_proceed_req(pc,pr,arg);
|
|
l3dss1_redir_req(pc,pr,arg);
|
|
} /* l3dss1_redir_req_early */
|
|
|
|
/***********************************************/
|
|
/* handle special commands for this protocol. */
|
|
/* Examples are call independant services like */
|
|
/* remote operations with dummy callref. */
|
|
/***********************************************/
|
|
static int l3dss1_cmd_global(struct PStack *st, isdn_ctrl *ic)
|
|
{ u_char id;
|
|
u_char temp[265];
|
|
u_char *p = temp;
|
|
int i, l, proc_len;
|
|
struct sk_buff *skb;
|
|
struct l3_process *pc = NULL;
|
|
|
|
switch (ic->arg)
|
|
{ case DSS1_CMD_INVOKE:
|
|
if (ic->parm.dss1_io.datalen < 0) return(-2); /* invalid parameter */
|
|
|
|
for (proc_len = 1, i = ic->parm.dss1_io.proc >> 8; i; i++)
|
|
i = i >> 8; /* add one byte */
|
|
l = ic->parm.dss1_io.datalen + proc_len + 8; /* length excluding ie header */
|
|
if (l > 255)
|
|
return(-2); /* too long */
|
|
|
|
if (!(id = new_invoke_id(st)))
|
|
return(0); /* first get a invoke id -> return if no available */
|
|
|
|
i = -1;
|
|
MsgHead(p, i, MT_FACILITY); /* build message head */
|
|
*p++ = 0x1C; /* Facility IE */
|
|
*p++ = l; /* length of ie */
|
|
*p++ = 0x91; /* remote operations */
|
|
*p++ = 0xA1; /* invoke */
|
|
*p++ = l - 3; /* length of invoke */
|
|
*p++ = 0x02; /* invoke id tag */
|
|
*p++ = 0x01; /* length is 1 */
|
|
*p++ = id; /* invoke id */
|
|
*p++ = 0x02; /* operation */
|
|
*p++ = proc_len; /* length of operation */
|
|
|
|
for (i = proc_len; i; i--)
|
|
*p++ = (ic->parm.dss1_io.proc >> (i-1)) & 0xFF;
|
|
memcpy(p, ic->parm.dss1_io.data, ic->parm.dss1_io.datalen); /* copy data */
|
|
l = (p - temp) + ic->parm.dss1_io.datalen; /* total length */
|
|
|
|
if (ic->parm.dss1_io.timeout > 0)
|
|
if (!(pc = dss1_new_l3_process(st, -1)))
|
|
{ free_invoke_id(st, id);
|
|
return(-2);
|
|
}
|
|
pc->prot.dss1.ll_id = ic->parm.dss1_io.ll_id; /* remember id */
|
|
pc->prot.dss1.proc = ic->parm.dss1_io.proc; /* and procedure */
|
|
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
{ free_invoke_id(st, id);
|
|
if (pc) dss1_release_l3_process(pc);
|
|
return(-2);
|
|
}
|
|
memcpy(skb_put(skb, l), temp, l);
|
|
|
|
if (pc)
|
|
{ pc->prot.dss1.invoke_id = id; /* remember id */
|
|
L3AddTimer(&pc->timer, ic->parm.dss1_io.timeout, CC_TDSS1_IO | REQUEST);
|
|
}
|
|
|
|
l3_msg(st, DL_DATA | REQUEST, skb);
|
|
ic->parm.dss1_io.hl_id = id; /* return id */
|
|
return(0);
|
|
|
|
case DSS1_CMD_INVOKE_ABORT:
|
|
if ((pc = l3dss1_search_dummy_proc(st, ic->parm.dss1_io.hl_id)))
|
|
{ L3DelTimer(&pc->timer); /* remove timer */
|
|
dss1_release_l3_process(pc);
|
|
return(0);
|
|
}
|
|
else
|
|
{ l3_debug(st, "l3dss1_cmd_global abort unknown id");
|
|
return(-2);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
l3_debug(st, "l3dss1_cmd_global unknown cmd 0x%lx", ic->arg);
|
|
return(-1);
|
|
} /* switch ic-> arg */
|
|
return(-1);
|
|
} /* l3dss1_cmd_global */
|
|
|
|
static void
|
|
l3dss1_io_timer(struct l3_process *pc)
|
|
{ isdn_ctrl ic;
|
|
struct IsdnCardState *cs = pc->st->l1.hardware;
|
|
|
|
L3DelTimer(&pc->timer); /* remove timer */
|
|
|
|
ic.driver = cs->myid;
|
|
ic.command = ISDN_STAT_PROT;
|
|
ic.arg = DSS1_STAT_INVOKE_ERR;
|
|
ic.parm.dss1_io.hl_id = pc->prot.dss1.invoke_id;
|
|
ic.parm.dss1_io.ll_id = pc->prot.dss1.ll_id;
|
|
ic.parm.dss1_io.proc = pc->prot.dss1.proc;
|
|
ic.parm.dss1_io.timeout= -1;
|
|
ic.parm.dss1_io.datalen = 0;
|
|
ic.parm.dss1_io.data = NULL;
|
|
free_invoke_id(pc->st, pc->prot.dss1.invoke_id);
|
|
pc->prot.dss1.invoke_id = 0; /* reset id */
|
|
|
|
cs->iif.statcallb(&ic);
|
|
|
|
dss1_release_l3_process(pc);
|
|
} /* l3dss1_io_timer */
|
|
|
|
static void
|
|
l3dss1_release_ind(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
u_char *p;
|
|
struct sk_buff *skb = arg;
|
|
int callState = 0;
|
|
p = skb->data;
|
|
|
|
if ((p = findie(p, skb->len, IE_CALL_STATE, 0))) {
|
|
p++;
|
|
if (1 == *p++)
|
|
callState = *p;
|
|
}
|
|
if (callState == 0) {
|
|
/* ETS 300-104 7.6.1, 8.6.1, 10.6.1... and 16.1
|
|
* set down layer 3 without sending any message
|
|
*/
|
|
pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
|
|
newl3state(pc, 0);
|
|
dss1_release_l3_process(pc);
|
|
} else {
|
|
pc->st->l3.l3l4(pc->st, CC_IGNORE | INDICATION, pc);
|
|
}
|
|
}
|
|
|
|
static void
|
|
l3dss1_dummy(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
}
|
|
|
|
static void
|
|
l3dss1_t302(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
L3DelTimer(&pc->timer);
|
|
pc->para.loc = 0;
|
|
pc->para.cause = 28; /* invalid number */
|
|
l3dss1_disconnect_req(pc, pr, NULL);
|
|
pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_t303(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
if (pc->N303 > 0) {
|
|
pc->N303--;
|
|
L3DelTimer(&pc->timer);
|
|
l3dss1_setup_req(pc, pr, arg);
|
|
} else {
|
|
L3DelTimer(&pc->timer);
|
|
l3dss1_message_cause(pc, MT_RELEASE_COMPLETE, 102);
|
|
pc->st->l3.l3l4(pc->st, CC_NOSETUP_RSP, pc);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
}
|
|
|
|
static void
|
|
l3dss1_t304(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
L3DelTimer(&pc->timer);
|
|
pc->para.loc = 0;
|
|
pc->para.cause = 102;
|
|
l3dss1_disconnect_req(pc, pr, NULL);
|
|
pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
|
|
|
|
}
|
|
|
|
static void
|
|
l3dss1_t305(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
u_char tmp[16];
|
|
u_char *p = tmp;
|
|
int l;
|
|
struct sk_buff *skb;
|
|
u_char cause = 16;
|
|
|
|
L3DelTimer(&pc->timer);
|
|
if (pc->para.cause != NO_CAUSE)
|
|
cause = pc->para.cause;
|
|
|
|
MsgHead(p, pc->callref, MT_RELEASE);
|
|
|
|
*p++ = IE_CAUSE;
|
|
*p++ = 0x2;
|
|
*p++ = 0x80;
|
|
*p++ = cause | 0x80;
|
|
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
newl3state(pc, 19);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
L3AddTimer(&pc->timer, T308, CC_T308_1);
|
|
}
|
|
|
|
static void
|
|
l3dss1_t310(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
L3DelTimer(&pc->timer);
|
|
pc->para.loc = 0;
|
|
pc->para.cause = 102;
|
|
l3dss1_disconnect_req(pc, pr, NULL);
|
|
pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_t313(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
L3DelTimer(&pc->timer);
|
|
pc->para.loc = 0;
|
|
pc->para.cause = 102;
|
|
l3dss1_disconnect_req(pc, pr, NULL);
|
|
pc->st->l3.l3l4(pc->st, CC_CONNECT_ERR, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_t308_1(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
newl3state(pc, 19);
|
|
L3DelTimer(&pc->timer);
|
|
l3dss1_message(pc, MT_RELEASE);
|
|
L3AddTimer(&pc->timer, T308, CC_T308_2);
|
|
}
|
|
|
|
static void
|
|
l3dss1_t308_2(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
L3DelTimer(&pc->timer);
|
|
pc->st->l3.l3l4(pc->st, CC_RELEASE_ERR, pc);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_t318(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
L3DelTimer(&pc->timer);
|
|
pc->para.cause = 102; /* Timer expiry */
|
|
pc->para.loc = 0; /* local */
|
|
pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc);
|
|
newl3state(pc, 19);
|
|
l3dss1_message(pc, MT_RELEASE);
|
|
L3AddTimer(&pc->timer, T308, CC_T308_1);
|
|
}
|
|
|
|
static void
|
|
l3dss1_t319(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
L3DelTimer(&pc->timer);
|
|
pc->para.cause = 102; /* Timer expiry */
|
|
pc->para.loc = 0; /* local */
|
|
pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc);
|
|
newl3state(pc, 10);
|
|
}
|
|
|
|
static void
|
|
l3dss1_restart(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
L3DelTimer(&pc->timer);
|
|
pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_status(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
u_char *p;
|
|
struct sk_buff *skb = arg;
|
|
int ret;
|
|
u_char cause = 0, callState = 0;
|
|
|
|
if ((ret = l3dss1_get_cause(pc, skb))) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "STATUS get_cause ret(%d)",ret);
|
|
if (ret < 0)
|
|
cause = 96;
|
|
else if (ret > 0)
|
|
cause = 100;
|
|
}
|
|
if ((p = findie(skb->data, skb->len, IE_CALL_STATE, 0))) {
|
|
p++;
|
|
if (1 == *p++) {
|
|
callState = *p;
|
|
if (!ie_in_set(pc, *p, l3_valid_states))
|
|
cause = 100;
|
|
} else
|
|
cause = 100;
|
|
} else
|
|
cause = 96;
|
|
if (!cause) { /* no error before */
|
|
ret = check_infoelements(pc, skb, ie_STATUS);
|
|
if (ERR_IE_COMPREHENSION == ret)
|
|
cause = 96;
|
|
else if (ERR_IE_UNRECOGNIZED == ret)
|
|
cause = 99;
|
|
}
|
|
if (cause) {
|
|
u_char tmp;
|
|
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "STATUS error(%d/%d)",ret,cause);
|
|
tmp = pc->para.cause;
|
|
pc->para.cause = cause;
|
|
l3dss1_status_send(pc, 0, NULL);
|
|
if (cause == 99)
|
|
pc->para.cause = tmp;
|
|
else
|
|
return;
|
|
}
|
|
cause = pc->para.cause;
|
|
if (((cause & 0x7f) == 111) && (callState == 0)) {
|
|
/* ETS 300-104 7.6.1, 8.6.1, 10.6.1...
|
|
* if received MT_STATUS with cause == 111 and call
|
|
* state == 0, then we must set down layer 3
|
|
*/
|
|
pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
|
|
newl3state(pc, 0);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
}
|
|
|
|
static void
|
|
l3dss1_facility(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int ret;
|
|
|
|
ret = check_infoelements(pc, skb, ie_FACILITY);
|
|
l3dss1_std_ie_err(pc, ret);
|
|
{
|
|
u_char *p;
|
|
if ((p = findie(skb->data, skb->len, IE_FACILITY, 0)))
|
|
l3dss1_parse_facility(pc->st, pc, pc->callref, p);
|
|
}
|
|
}
|
|
|
|
static void
|
|
l3dss1_suspend_req(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb;
|
|
u_char tmp[32];
|
|
u_char *p = tmp;
|
|
u_char i, l;
|
|
u_char *msg = pc->chan->setup.phone;
|
|
|
|
MsgHead(p, pc->callref, MT_SUSPEND);
|
|
l = *msg++;
|
|
if (l && (l <= 10)) { /* Max length 10 octets */
|
|
*p++ = IE_CALL_ID;
|
|
*p++ = l;
|
|
for (i = 0; i < l; i++)
|
|
*p++ = *msg++;
|
|
} else if (l) {
|
|
l3_debug(pc->st, "SUS wrong CALL_ID len %d", l);
|
|
return;
|
|
}
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
newl3state(pc, 15);
|
|
L3AddTimer(&pc->timer, T319, CC_T319);
|
|
}
|
|
|
|
static void
|
|
l3dss1_suspend_ack(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int ret;
|
|
|
|
L3DelTimer(&pc->timer);
|
|
newl3state(pc, 0);
|
|
pc->para.cause = NO_CAUSE;
|
|
pc->st->l3.l3l4(pc->st, CC_SUSPEND | CONFIRM, pc);
|
|
/* We don't handle suspend_ack for IE errors now */
|
|
if ((ret = check_infoelements(pc, skb, ie_SUSPEND_ACKNOWLEDGE)))
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "SUSPACK check ie(%d)",ret);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_suspend_rej(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int ret;
|
|
|
|
if ((ret = l3dss1_get_cause(pc, skb))) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "SUSP_REJ get_cause ret(%d)",ret);
|
|
if (ret < 0)
|
|
pc->para.cause = 96;
|
|
else
|
|
pc->para.cause = 100;
|
|
l3dss1_status_send(pc, pr, NULL);
|
|
return;
|
|
}
|
|
ret = check_infoelements(pc, skb, ie_SUSPEND_REJECT);
|
|
if (ERR_IE_COMPREHENSION == ret) {
|
|
l3dss1_std_ie_err(pc, ret);
|
|
return;
|
|
}
|
|
L3DelTimer(&pc->timer);
|
|
pc->st->l3.l3l4(pc->st, CC_SUSPEND_ERR, pc);
|
|
newl3state(pc, 10);
|
|
if (ret) /* STATUS for none mandatory IE errors after actions are taken */
|
|
l3dss1_std_ie_err(pc, ret);
|
|
}
|
|
|
|
static void
|
|
l3dss1_resume_req(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb;
|
|
u_char tmp[32];
|
|
u_char *p = tmp;
|
|
u_char i, l;
|
|
u_char *msg = pc->para.setup.phone;
|
|
|
|
MsgHead(p, pc->callref, MT_RESUME);
|
|
|
|
l = *msg++;
|
|
if (l && (l <= 10)) { /* Max length 10 octets */
|
|
*p++ = IE_CALL_ID;
|
|
*p++ = l;
|
|
for (i = 0; i < l; i++)
|
|
*p++ = *msg++;
|
|
} else if (l) {
|
|
l3_debug(pc->st, "RES wrong CALL_ID len %d", l);
|
|
return;
|
|
}
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
newl3state(pc, 17);
|
|
L3AddTimer(&pc->timer, T318, CC_T318);
|
|
}
|
|
|
|
static void
|
|
l3dss1_resume_ack(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int id, ret;
|
|
|
|
if ((id = l3dss1_get_channel_id(pc, skb)) > 0) {
|
|
if ((0 == id) || ((3 == id) && (0x10 == pc->para.moderate))) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "resume ack with wrong chid %x", id);
|
|
pc->para.cause = 100;
|
|
l3dss1_status_send(pc, pr, NULL);
|
|
return;
|
|
}
|
|
pc->para.bchannel = id;
|
|
} else if (1 == pc->state) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "resume ack without chid (ret %d)", id);
|
|
pc->para.cause = 96;
|
|
l3dss1_status_send(pc, pr, NULL);
|
|
return;
|
|
}
|
|
ret = check_infoelements(pc, skb, ie_RESUME_ACKNOWLEDGE);
|
|
if (ERR_IE_COMPREHENSION == ret) {
|
|
l3dss1_std_ie_err(pc, ret);
|
|
return;
|
|
}
|
|
L3DelTimer(&pc->timer);
|
|
pc->st->l3.l3l4(pc->st, CC_RESUME | CONFIRM, pc);
|
|
newl3state(pc, 10);
|
|
if (ret) /* STATUS for none mandatory IE errors after actions are taken */
|
|
l3dss1_std_ie_err(pc, ret);
|
|
}
|
|
|
|
static void
|
|
l3dss1_resume_rej(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
struct sk_buff *skb = arg;
|
|
int ret;
|
|
|
|
if ((ret = l3dss1_get_cause(pc, skb))) {
|
|
if (pc->debug & L3_DEB_WARN)
|
|
l3_debug(pc->st, "RES_REJ get_cause ret(%d)",ret);
|
|
if (ret < 0)
|
|
pc->para.cause = 96;
|
|
else
|
|
pc->para.cause = 100;
|
|
l3dss1_status_send(pc, pr, NULL);
|
|
return;
|
|
}
|
|
ret = check_infoelements(pc, skb, ie_RESUME_REJECT);
|
|
if (ERR_IE_COMPREHENSION == ret) {
|
|
l3dss1_std_ie_err(pc, ret);
|
|
return;
|
|
}
|
|
L3DelTimer(&pc->timer);
|
|
pc->st->l3.l3l4(pc->st, CC_RESUME_ERR, pc);
|
|
newl3state(pc, 0);
|
|
if (ret) /* STATUS for none mandatory IE errors after actions are taken */
|
|
l3dss1_std_ie_err(pc, ret);
|
|
dss1_release_l3_process(pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_global_restart(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
u_char tmp[32];
|
|
u_char *p;
|
|
u_char ri, ch = 0, chan = 0;
|
|
int l;
|
|
struct sk_buff *skb = arg;
|
|
struct l3_process *up;
|
|
|
|
newl3state(pc, 2);
|
|
L3DelTimer(&pc->timer);
|
|
p = skb->data;
|
|
if ((p = findie(p, skb->len, IE_RESTART_IND, 0))) {
|
|
ri = p[2];
|
|
l3_debug(pc->st, "Restart %x", ri);
|
|
} else {
|
|
l3_debug(pc->st, "Restart without restart IE");
|
|
ri = 0x86;
|
|
}
|
|
p = skb->data;
|
|
if ((p = findie(p, skb->len, IE_CHANNEL_ID, 0))) {
|
|
chan = p[2] & 3;
|
|
ch = p[2];
|
|
if (pc->st->l3.debug)
|
|
l3_debug(pc->st, "Restart for channel %d", chan);
|
|
}
|
|
newl3state(pc, 2);
|
|
up = pc->st->l3.proc;
|
|
while (up) {
|
|
if ((ri & 7) == 7)
|
|
up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up);
|
|
else if (up->para.bchannel == chan)
|
|
up->st->lli.l4l3(up->st, CC_RESTART | REQUEST, up);
|
|
up = up->next;
|
|
}
|
|
p = tmp;
|
|
MsgHead(p, pc->callref, MT_RESTART_ACKNOWLEDGE);
|
|
if (chan) {
|
|
*p++ = IE_CHANNEL_ID;
|
|
*p++ = 1;
|
|
*p++ = ch | 0x80;
|
|
}
|
|
*p++ = 0x79; /* RESTART Ind */
|
|
*p++ = 1;
|
|
*p++ = ri;
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
newl3state(pc, 0);
|
|
l3_msg(pc->st, DL_DATA | REQUEST, skb);
|
|
}
|
|
|
|
static void
|
|
l3dss1_dl_reset(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
pc->para.cause = 0x29; /* Temporary failure */
|
|
pc->para.loc = 0;
|
|
l3dss1_disconnect_req(pc, pr, NULL);
|
|
pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_dl_release(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
newl3state(pc, 0);
|
|
pc->para.cause = 0x1b; /* Destination out of order */
|
|
pc->para.loc = 0;
|
|
pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
|
|
release_l3_process(pc);
|
|
}
|
|
|
|
static void
|
|
l3dss1_dl_reestablish(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
L3DelTimer(&pc->timer);
|
|
L3AddTimer(&pc->timer, T309, CC_T309);
|
|
l3_msg(pc->st, DL_ESTABLISH | REQUEST, NULL);
|
|
}
|
|
|
|
static void
|
|
l3dss1_dl_reest_status(struct l3_process *pc, u_char pr, void *arg)
|
|
{
|
|
L3DelTimer(&pc->timer);
|
|
|
|
pc->para.cause = 0x1F; /* normal, unspecified */
|
|
l3dss1_status_send(pc, 0, NULL);
|
|
}
|
|
|
|
/* *INDENT-OFF* */
|
|
static struct stateentry downstatelist[] =
|
|
{
|
|
{SBIT(0),
|
|
CC_SETUP | REQUEST, l3dss1_setup_req},
|
|
{SBIT(0),
|
|
CC_RESUME | REQUEST, l3dss1_resume_req},
|
|
{SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(25),
|
|
CC_DISCONNECT | REQUEST, l3dss1_disconnect_req},
|
|
{SBIT(12),
|
|
CC_RELEASE | REQUEST, l3dss1_release_req},
|
|
{ALL_STATES,
|
|
CC_RESTART | REQUEST, l3dss1_restart},
|
|
{SBIT(6) | SBIT(25),
|
|
CC_IGNORE | REQUEST, l3dss1_reset},
|
|
{SBIT(6) | SBIT(25),
|
|
CC_REJECT | REQUEST, l3dss1_reject_req},
|
|
{SBIT(6) | SBIT(25),
|
|
CC_PROCEED_SEND | REQUEST, l3dss1_proceed_req},
|
|
{SBIT(6),
|
|
CC_MORE_INFO | REQUEST, l3dss1_setup_ack_req},
|
|
{SBIT(25),
|
|
CC_MORE_INFO | REQUEST, l3dss1_dummy},
|
|
{SBIT(6) | SBIT(9) | SBIT(25),
|
|
CC_ALERTING | REQUEST, l3dss1_alert_req},
|
|
{SBIT(6) | SBIT(7) | SBIT(9) | SBIT(25),
|
|
CC_SETUP | RESPONSE, l3dss1_setup_rsp},
|
|
{SBIT(10),
|
|
CC_SUSPEND | REQUEST, l3dss1_suspend_req},
|
|
{SBIT(7) | SBIT(9) | SBIT(25),
|
|
CC_REDIR | REQUEST, l3dss1_redir_req},
|
|
{SBIT(6),
|
|
CC_REDIR | REQUEST, l3dss1_redir_req_early},
|
|
{SBIT(9) | SBIT(25),
|
|
CC_DISCONNECT | REQUEST, l3dss1_disconnect_req},
|
|
{SBIT(25),
|
|
CC_T302, l3dss1_t302},
|
|
{SBIT(1),
|
|
CC_T303, l3dss1_t303},
|
|
{SBIT(2),
|
|
CC_T304, l3dss1_t304},
|
|
{SBIT(3),
|
|
CC_T310, l3dss1_t310},
|
|
{SBIT(8),
|
|
CC_T313, l3dss1_t313},
|
|
{SBIT(11),
|
|
CC_T305, l3dss1_t305},
|
|
{SBIT(15),
|
|
CC_T319, l3dss1_t319},
|
|
{SBIT(17),
|
|
CC_T318, l3dss1_t318},
|
|
{SBIT(19),
|
|
CC_T308_1, l3dss1_t308_1},
|
|
{SBIT(19),
|
|
CC_T308_2, l3dss1_t308_2},
|
|
{SBIT(10),
|
|
CC_T309, l3dss1_dl_release},
|
|
};
|
|
|
|
static struct stateentry datastatelist[] =
|
|
{
|
|
{ALL_STATES,
|
|
MT_STATUS_ENQUIRY, l3dss1_status_enq},
|
|
{ALL_STATES,
|
|
MT_FACILITY, l3dss1_facility},
|
|
{SBIT(19),
|
|
MT_STATUS, l3dss1_release_ind},
|
|
{ALL_STATES,
|
|
MT_STATUS, l3dss1_status},
|
|
{SBIT(0),
|
|
MT_SETUP, l3dss1_setup},
|
|
{SBIT(6) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(12) |
|
|
SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25),
|
|
MT_SETUP, l3dss1_dummy},
|
|
{SBIT(1) | SBIT(2),
|
|
MT_CALL_PROCEEDING, l3dss1_call_proc},
|
|
{SBIT(1),
|
|
MT_SETUP_ACKNOWLEDGE, l3dss1_setup_ack},
|
|
{SBIT(2) | SBIT(3),
|
|
MT_ALERTING, l3dss1_alerting},
|
|
{SBIT(2) | SBIT(3),
|
|
MT_PROGRESS, l3dss1_progress},
|
|
{SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) |
|
|
SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25),
|
|
MT_INFORMATION, l3dss1_information},
|
|
{SBIT(10) | SBIT(11) | SBIT(15),
|
|
MT_NOTIFY, l3dss1_notify},
|
|
{SBIT(0) | SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(10) |
|
|
SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(19) | SBIT(25),
|
|
MT_RELEASE_COMPLETE, l3dss1_release_cmpl},
|
|
{SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17) | SBIT(25),
|
|
MT_RELEASE, l3dss1_release},
|
|
{SBIT(19), MT_RELEASE, l3dss1_release_ind},
|
|
{SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(9) | SBIT(10) | SBIT(11) | SBIT(15) | SBIT(17) | SBIT(25),
|
|
MT_DISCONNECT, l3dss1_disconnect},
|
|
{SBIT(19),
|
|
MT_DISCONNECT, l3dss1_dummy},
|
|
{SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4),
|
|
MT_CONNECT, l3dss1_connect},
|
|
{SBIT(8),
|
|
MT_CONNECT_ACKNOWLEDGE, l3dss1_connect_ack},
|
|
{SBIT(15),
|
|
MT_SUSPEND_ACKNOWLEDGE, l3dss1_suspend_ack},
|
|
{SBIT(15),
|
|
MT_SUSPEND_REJECT, l3dss1_suspend_rej},
|
|
{SBIT(17),
|
|
MT_RESUME_ACKNOWLEDGE, l3dss1_resume_ack},
|
|
{SBIT(17),
|
|
MT_RESUME_REJECT, l3dss1_resume_rej},
|
|
};
|
|
|
|
static struct stateentry globalmes_list[] =
|
|
{
|
|
{ALL_STATES,
|
|
MT_STATUS, l3dss1_status},
|
|
{SBIT(0),
|
|
MT_RESTART, l3dss1_global_restart},
|
|
/* {SBIT(1),
|
|
MT_RESTART_ACKNOWLEDGE, l3dss1_restart_ack},
|
|
*/
|
|
};
|
|
|
|
static struct stateentry manstatelist[] =
|
|
{
|
|
{SBIT(2),
|
|
DL_ESTABLISH | INDICATION, l3dss1_dl_reset},
|
|
{SBIT(10),
|
|
DL_ESTABLISH | CONFIRM, l3dss1_dl_reest_status},
|
|
{SBIT(10),
|
|
DL_RELEASE | INDICATION, l3dss1_dl_reestablish},
|
|
{ALL_STATES,
|
|
DL_RELEASE | INDICATION, l3dss1_dl_release},
|
|
};
|
|
|
|
/* *INDENT-ON* */
|
|
|
|
|
|
static void
|
|
global_handler(struct PStack *st, int mt, struct sk_buff *skb)
|
|
{
|
|
u_char tmp[16];
|
|
u_char *p = tmp;
|
|
int l;
|
|
int i;
|
|
struct l3_process *proc = st->l3.global;
|
|
|
|
proc->callref = skb->data[2]; /* cr flag */
|
|
for (i = 0; i < ARRAY_SIZE(globalmes_list); i++)
|
|
if ((mt == globalmes_list[i].primitive) &&
|
|
((1 << proc->state) & globalmes_list[i].state))
|
|
break;
|
|
if (i == ARRAY_SIZE(globalmes_list)) {
|
|
if (st->l3.debug & L3_DEB_STATE) {
|
|
l3_debug(st, "dss1 global state %d mt %x unhandled",
|
|
proc->state, mt);
|
|
}
|
|
MsgHead(p, proc->callref, MT_STATUS);
|
|
*p++ = IE_CAUSE;
|
|
*p++ = 0x2;
|
|
*p++ = 0x80;
|
|
*p++ = 81 |0x80; /* invalid cr */
|
|
*p++ = 0x14; /* CallState */
|
|
*p++ = 0x1;
|
|
*p++ = proc->state & 0x3f;
|
|
l = p - tmp;
|
|
if (!(skb = l3_alloc_skb(l)))
|
|
return;
|
|
memcpy(skb_put(skb, l), tmp, l);
|
|
l3_msg(proc->st, DL_DATA | REQUEST, skb);
|
|
} else {
|
|
if (st->l3.debug & L3_DEB_STATE) {
|
|
l3_debug(st, "dss1 global %d mt %x",
|
|
proc->state, mt);
|
|
}
|
|
globalmes_list[i].rout(proc, mt, skb);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dss1up(struct PStack *st, int pr, void *arg)
|
|
{
|
|
int i, mt, cr, cause, callState;
|
|
char *ptr;
|
|
u_char *p;
|
|
struct sk_buff *skb = arg;
|
|
struct l3_process *proc;
|
|
|
|
switch (pr) {
|
|
case (DL_DATA | INDICATION):
|
|
case (DL_UNIT_DATA | INDICATION):
|
|
break;
|
|
case (DL_ESTABLISH | CONFIRM):
|
|
case (DL_ESTABLISH | INDICATION):
|
|
case (DL_RELEASE | INDICATION):
|
|
case (DL_RELEASE | CONFIRM):
|
|
l3_msg(st, pr, arg);
|
|
return;
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "HiSax dss1up unknown pr=%04x\n", pr);
|
|
return;
|
|
}
|
|
if (skb->len < 3) {
|
|
l3_debug(st, "dss1up frame too short(%d)", skb->len);
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
if (skb->data[0] != PROTO_DIS_EURO) {
|
|
if (st->l3.debug & L3_DEB_PROTERR) {
|
|
l3_debug(st, "dss1up%sunexpected discriminator %x message len %d",
|
|
(pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
|
|
skb->data[0], skb->len);
|
|
}
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
cr = getcallref(skb->data);
|
|
if (skb->len < ((skb->data[1] & 0x0f) + 3)) {
|
|
l3_debug(st, "dss1up frame too short(%d)", skb->len);
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
mt = skb->data[skb->data[1] + 2];
|
|
if (st->l3.debug & L3_DEB_STATE)
|
|
l3_debug(st, "dss1up cr %d", cr);
|
|
if (cr == -2) { /* wrong Callref */
|
|
if (st->l3.debug & L3_DEB_WARN)
|
|
l3_debug(st, "dss1up wrong Callref");
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
} else if (cr == -1) { /* Dummy Callref */
|
|
if (mt == MT_FACILITY)
|
|
if ((p = findie(skb->data, skb->len, IE_FACILITY, 0))) {
|
|
l3dss1_parse_facility(st, NULL,
|
|
(pr == (DL_DATA | INDICATION)) ? -1 : -2, p);
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
if (st->l3.debug & L3_DEB_WARN)
|
|
l3_debug(st, "dss1up dummy Callref (no facility msg or ie)");
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
} else if ((((skb->data[1] & 0x0f) == 1) && (0==(cr & 0x7f))) ||
|
|
(((skb->data[1] & 0x0f) == 2) && (0==(cr & 0x7fff)))) { /* Global CallRef */
|
|
if (st->l3.debug & L3_DEB_STATE)
|
|
l3_debug(st, "dss1up Global CallRef");
|
|
global_handler(st, mt, skb);
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
} else if (!(proc = getl3proc(st, cr))) {
|
|
/* No transaction process exist, that means no call with
|
|
* this callreference is active
|
|
*/
|
|
if (mt == MT_SETUP) {
|
|
/* Setup creates a new transaction process */
|
|
if (skb->data[2] & 0x80) {
|
|
/* Setup with wrong CREF flag */
|
|
if (st->l3.debug & L3_DEB_STATE)
|
|
l3_debug(st, "dss1up wrong CRef flag");
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
if (!(proc = dss1_new_l3_process(st, cr))) {
|
|
/* May be to answer with RELEASE_COMPLETE and
|
|
* CAUSE 0x2f "Resource unavailable", but this
|
|
* need a new_l3_process too ... arghh
|
|
*/
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
} else if (mt == MT_STATUS) {
|
|
cause = 0;
|
|
if ((ptr = findie(skb->data, skb->len, IE_CAUSE, 0)) != NULL) {
|
|
ptr++;
|
|
if (*ptr++ == 2)
|
|
ptr++;
|
|
cause = *ptr & 0x7f;
|
|
}
|
|
callState = 0;
|
|
if ((ptr = findie(skb->data, skb->len, IE_CALL_STATE, 0)) != NULL) {
|
|
ptr++;
|
|
if (*ptr++ == 2)
|
|
ptr++;
|
|
callState = *ptr;
|
|
}
|
|
/* ETS 300-104 part 2.4.1
|
|
* if setup has not been made and a message type
|
|
* MT_STATUS is received with call state == 0,
|
|
* we must send nothing
|
|
*/
|
|
if (callState != 0) {
|
|
/* ETS 300-104 part 2.4.2
|
|
* if setup has not been made and a message type
|
|
* MT_STATUS is received with call state != 0,
|
|
* we must send MT_RELEASE_COMPLETE cause 101
|
|
*/
|
|
if ((proc = dss1_new_l3_process(st, cr))) {
|
|
proc->para.cause = 101;
|
|
l3dss1_msg_without_setup(proc, 0, NULL);
|
|
}
|
|
}
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
} else if (mt == MT_RELEASE_COMPLETE) {
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
} else {
|
|
/* ETS 300-104 part 2
|
|
* if setup has not been made and a message type
|
|
* (except MT_SETUP and RELEASE_COMPLETE) is received,
|
|
* we must send MT_RELEASE_COMPLETE cause 81 */
|
|
dev_kfree_skb(skb);
|
|
if ((proc = dss1_new_l3_process(st, cr))) {
|
|
proc->para.cause = 81;
|
|
l3dss1_msg_without_setup(proc, 0, NULL);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
if (l3dss1_check_messagetype_validity(proc, mt, skb)) {
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
if ((p = findie(skb->data, skb->len, IE_DISPLAY, 0)) != NULL)
|
|
l3dss1_deliver_display(proc, pr, p); /* Display IE included */
|
|
for (i = 0; i < ARRAY_SIZE(datastatelist); i++)
|
|
if ((mt == datastatelist[i].primitive) &&
|
|
((1 << proc->state) & datastatelist[i].state))
|
|
break;
|
|
if (i == ARRAY_SIZE(datastatelist)) {
|
|
if (st->l3.debug & L3_DEB_STATE) {
|
|
l3_debug(st, "dss1up%sstate %d mt %#x unhandled",
|
|
(pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
|
|
proc->state, mt);
|
|
}
|
|
if ((MT_RELEASE_COMPLETE != mt) && (MT_RELEASE != mt)) {
|
|
proc->para.cause = 101;
|
|
l3dss1_status_send(proc, pr, skb);
|
|
}
|
|
} else {
|
|
if (st->l3.debug & L3_DEB_STATE) {
|
|
l3_debug(st, "dss1up%sstate %d mt %x",
|
|
(pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
|
|
proc->state, mt);
|
|
}
|
|
datastatelist[i].rout(proc, pr, skb);
|
|
}
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
static void
|
|
dss1down(struct PStack *st, int pr, void *arg)
|
|
{
|
|
int i, cr;
|
|
struct l3_process *proc;
|
|
struct Channel *chan;
|
|
|
|
if ((DL_ESTABLISH | REQUEST) == pr) {
|
|
l3_msg(st, pr, NULL);
|
|
return;
|
|
} else if (((CC_SETUP | REQUEST) == pr) || ((CC_RESUME | REQUEST) == pr)) {
|
|
chan = arg;
|
|
cr = newcallref();
|
|
cr |= 0x80;
|
|
if ((proc = dss1_new_l3_process(st, cr))) {
|
|
proc->chan = chan;
|
|
chan->proc = proc;
|
|
memcpy(&proc->para.setup, &chan->setup, sizeof(setup_parm));
|
|
proc->callref = cr;
|
|
}
|
|
} else {
|
|
proc = arg;
|
|
}
|
|
if (!proc) {
|
|
printk(KERN_ERR "HiSax dss1down without proc pr=%04x\n", pr);
|
|
return;
|
|
}
|
|
|
|
if ( pr == (CC_TDSS1_IO | REQUEST)) {
|
|
l3dss1_io_timer(proc); /* timer expires */
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(downstatelist); i++)
|
|
if ((pr == downstatelist[i].primitive) &&
|
|
((1 << proc->state) & downstatelist[i].state))
|
|
break;
|
|
if (i == ARRAY_SIZE(downstatelist)) {
|
|
if (st->l3.debug & L3_DEB_STATE) {
|
|
l3_debug(st, "dss1down state %d prim %#x unhandled",
|
|
proc->state, pr);
|
|
}
|
|
} else {
|
|
if (st->l3.debug & L3_DEB_STATE) {
|
|
l3_debug(st, "dss1down state %d prim %#x",
|
|
proc->state, pr);
|
|
}
|
|
downstatelist[i].rout(proc, pr, arg);
|
|
}
|
|
}
|
|
|
|
static void
|
|
dss1man(struct PStack *st, int pr, void *arg)
|
|
{
|
|
int i;
|
|
struct l3_process *proc = arg;
|
|
|
|
if (!proc) {
|
|
printk(KERN_ERR "HiSax dss1man without proc pr=%04x\n", pr);
|
|
return;
|
|
}
|
|
for (i = 0; i < ARRAY_SIZE(manstatelist); i++)
|
|
if ((pr == manstatelist[i].primitive) &&
|
|
((1 << proc->state) & manstatelist[i].state))
|
|
break;
|
|
if (i == ARRAY_SIZE(manstatelist)) {
|
|
if (st->l3.debug & L3_DEB_STATE) {
|
|
l3_debug(st, "cr %d dss1man state %d prim %#x unhandled",
|
|
proc->callref & 0x7f, proc->state, pr);
|
|
}
|
|
} else {
|
|
if (st->l3.debug & L3_DEB_STATE) {
|
|
l3_debug(st, "cr %d dss1man state %d prim %#x",
|
|
proc->callref & 0x7f, proc->state, pr);
|
|
}
|
|
manstatelist[i].rout(proc, pr, arg);
|
|
}
|
|
}
|
|
|
|
void
|
|
setstack_dss1(struct PStack *st)
|
|
{
|
|
char tmp[64];
|
|
int i;
|
|
|
|
st->lli.l4l3 = dss1down;
|
|
st->lli.l4l3_proto = l3dss1_cmd_global;
|
|
st->l2.l2l3 = dss1up;
|
|
st->l3.l3ml3 = dss1man;
|
|
st->l3.N303 = 1;
|
|
st->prot.dss1.last_invoke_id = 0;
|
|
st->prot.dss1.invoke_used[0] = 1; /* Bit 0 must always be set to 1 */
|
|
i = 1;
|
|
while (i < 32)
|
|
st->prot.dss1.invoke_used[i++] = 0;
|
|
|
|
if (!(st->l3.global = kmalloc(sizeof(struct l3_process), GFP_ATOMIC))) {
|
|
printk(KERN_ERR "HiSax can't get memory for dss1 global CR\n");
|
|
} else {
|
|
st->l3.global->state = 0;
|
|
st->l3.global->callref = 0;
|
|
st->l3.global->next = NULL;
|
|
st->l3.global->debug = L3_DEB_WARN;
|
|
st->l3.global->st = st;
|
|
st->l3.global->N303 = 1;
|
|
st->l3.global->prot.dss1.invoke_id = 0;
|
|
|
|
L3InitTimer(st->l3.global, &st->l3.global->timer);
|
|
}
|
|
strcpy(tmp, dss1_revision);
|
|
printk(KERN_INFO "HiSax: DSS1 Rev. %s\n", HiSax_getrev(tmp));
|
|
}
|