drivers/isdn/hisax/l3_1tr6.c - kernel/msm-5.4 - Gitiles

 /* $Id: l3_1tr6.c,v 2.15.2.3 2004/01/13 14:31:25 keil Exp $
  *
  * German 1TR6 D-channel protocol
  *
  * Author       Karsten Keil
  * 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
  *
  */

 #include "hisax.h"
 #include "l3_1tr6.h"
 #include "isdnl3.h"
 #include <linux/ctype.h>

 extern char *HiSax_getrev(const char *revision);
 const char *l3_1tr6_revision = "$Revision: 2.15.2.3 $";

 #define MsgHead(ptr, cref, mty, dis) \
 	*ptr++ = dis; \
 	*ptr++ = 0x1; \
 	*ptr++ = cref ^ 0x80; \
 	*ptr++ = mty

 static void
 l3_1TR6_message(struct l3_process *pc, u_char mt, u_char pd)
 {
 	struct sk_buff *skb;
 	u_char *p;

 	if (!(skb = l3_alloc_skb(4)))
 		return;
 	p = skb_put(skb, 4);
 	MsgHead(p, pc->callref, mt, pd);
 	l3_msg(pc->st, DL_DATA | REQUEST, skb);
 }

 static void
 l3_1tr6_release_req(struct l3_process *pc, u_char pr, void *arg)
 {
 	StopAllL3Timer(pc);
 	newl3state(pc, 19);
 	l3_1TR6_message(pc, MT_N1_REL, PROTO_DIS_N1);
 	L3AddTimer(&pc->timer, T308, CC_T308_1);
 }

 static void
 l3_1tr6_invalid(struct l3_process *pc, u_char pr, void *arg)
 {
 	struct sk_buff *skb = arg;

 	dev_kfree_skb(skb);
 	l3_1tr6_release_req(pc, 0, NULL);
 }

 static void
 l3_1tr6_error(struct l3_process *pc, u_char *msg, struct sk_buff *skb)
 {
 	dev_kfree_skb(skb);
 	if (pc->st->l3.debug & L3_DEB_WARN)
 		l3_debug(pc->st, msg);
 	l3_1tr6_release_req(pc, 0, NULL);
 }

 static void
 l3_1tr6_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 *teln;
 	u_char *eaz;
 	u_char channel = 0;
 	int l;

 	MsgHead(p, pc->callref, MT_N1_SETUP, PROTO_DIS_N1);
 	teln = pc->para.setup.phone;
 	pc->para.spv = 0;
 	if (!isdigit(*teln)) {
 		switch (0x5f & *teln) {
 			case 'S':
 				pc->para.spv = 1;
 				break;
 			case 'C':
 				channel = 0x08;
 			case 'P':
 				channel |= 0x80;
 				teln++;
 				if (*teln == '1')
 					channel |= 0x01;
 				else
 					channel |= 0x02;
 				break;
 			default:
 				if (pc->st->l3.debug & L3_DEB_WARN)
 					l3_debug(pc->st, "Wrong MSN Code");
 				break;
 		}
 		teln++;
 	}
 	if (channel) {
 		*p++ = 0x18;	/* channel indicator */
 		*p++ = 1;
 		*p++ = channel;
 	}
 	if (pc->para.spv) {	/* SPV ? */
 		/* NSF SPV */
 		*p++ = WE0_netSpecFac;
 		*p++ = 4;	/* Laenge */
 		*p++ = 0;
 		*p++ = FAC_SPV;	/* SPV */
 		*p++ = pc->para.setup.si1;	/* 0 for all Services */
 		*p++ = pc->para.setup.si2;	/* 0 for all Services */
 		*p++ = WE0_netSpecFac;
 		*p++ = 4;	/* Laenge */
 		*p++ = 0;
 		*p++ = FAC_Activate;	/* aktiviere SPV (default) */
 		*p++ = pc->para.setup.si1;	/* 0 for all Services */
 		*p++ = pc->para.setup.si2;	/* 0 for all Services */
 	}
 	eaz = pc->para.setup.eazmsn;
 	if (*eaz) {
 		*p++ = WE0_origAddr;
 		*p++ = strlen(eaz) + 1;
 		/* Classify as AnyPref. */
 		*p++ = 0x81;	/* Ext = '1'B, Type = '000'B, Plan = '0001'B. */
 		while (*eaz)
 			*p++ = *eaz++ & 0x7f;
 	}
 	*p++ = WE0_destAddr;
 	*p++ = strlen(teln) + 1;
 	/* Classify as AnyPref. */
 	*p++ = 0x81;		/* Ext = '1'B, Type = '000'B, Plan = '0001'B. */
 	while (*teln)
 		*p++ = *teln++ & 0x7f;

 	*p++ = WE_Shift_F6;
 	/* Codesatz 6 fuer Service */
 	*p++ = WE6_serviceInd;
 	*p++ = 2;		/* len=2 info,info2 */
 	*p++ = pc->para.setup.si1;
 	*p++ = pc->para.setup.si2;

 	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
 l3_1tr6_setup(struct l3_process *pc, u_char pr, void *arg)
 {
 	u_char *p;
 	int bcfound = 0;
 	char tmp[80];
 	struct sk_buff *skb = arg;

 	p = skb->data;

 	/* Channel Identification */
 	p = skb->data;
 	if ((p = findie(p, skb->len, WE0_chanID, 0))) {
 		if (p[1] != 1) {
 			l3_1tr6_error(pc, "setup wrong chanID len", skb);
 			return;
 		}
 		if ((p[2] & 0xf4) != 0x80) {
 			l3_1tr6_error(pc, "setup wrong WE0_chanID", skb);
 			return;
 		}
 		if ((pc->para.bchannel = p[2] & 0x3))
 				bcfound++;
 	} else {
 		l3_1tr6_error(pc, "missing setup chanID", skb);
 		return;
 	}

 	p = skb->data;
 	if ((p = findie(p, skb->len, WE6_serviceInd, 6))) {
 		pc->para.setup.si1 = p[2];
 		pc->para.setup.si2 = p[3];
 	} else {
 		l3_1tr6_error(pc, "missing setup SI", skb);
 		return;
 	}

 	p = skb->data;
 	if ((p = findie(p, skb->len, WE0_destAddr, 0)))
 		iecpy(pc->para.setup.eazmsn, p, 1);
 	else
 		pc->para.setup.eazmsn[0] = 0;

 	p = skb->data;
 	if ((p = findie(p, skb->len, WE0_origAddr, 0))) {
 		iecpy(pc->para.setup.phone, p, 1);
 	} else
 		pc->para.setup.phone[0] = 0;

 	p = skb->data;
 	pc->para.spv = 0;
 	if ((p = findie(p, skb->len, WE0_netSpecFac, 0))) {
 		if ((FAC_SPV == p[3]) || (FAC_Activate == p[3]))
 			pc->para.spv = 1;
 	}
 	dev_kfree_skb(skb);

 	/* Signal all services, linklevel takes care of Service-Indicator */
 	if (bcfound) {
 		if ((pc->para.setup.si1 != 7) && (pc->st->l3.debug & L3_DEB_WARN)) {
 			sprintf(tmp, "non-digital call: %s -> %s",
 				pc->para.setup.phone,
 				pc->para.setup.eazmsn);
 			l3_debug(pc->st, tmp);
 		}
 		newl3state(pc, 6);
 		pc->st->l3.l3l4(pc->st, CC_SETUP | INDICATION, pc);
 	} else
 		release_l3_process(pc);
 }

 static void
 l3_1tr6_setup_ack(struct l3_process *pc, u_char pr, void *arg)
 {
 	u_char *p;
 	struct sk_buff *skb = arg;

 	L3DelTimer(&pc->timer);
 	p = skb->data;
 	newl3state(pc, 2);
 	if ((p = findie(p, skb->len, WE0_chanID, 0))) {
 		if (p[1] != 1) {
 			l3_1tr6_error(pc, "setup_ack wrong chanID len", skb);
 			return;
 		}
 		if ((p[2] & 0xf4) != 0x80) {
 			l3_1tr6_error(pc, "setup_ack wrong WE0_chanID", skb);
 			return;
 		}
 		pc->para.bchannel = p[2] & 0x3;
 	} else {
 		l3_1tr6_error(pc, "missing setup_ack WE0_chanID", skb);
 		return;
 	}
 	dev_kfree_skb(skb);
 	L3AddTimer(&pc->timer, T304, CC_T304);
 	pc->st->l3.l3l4(pc->st, CC_MORE_INFO | INDICATION, pc);
 }

 static void
 l3_1tr6_call_sent(struct l3_process *pc, u_char pr, void *arg)
 {
 	u_char *p;
 	struct sk_buff *skb = arg;

 	L3DelTimer(&pc->timer);
 	p = skb->data;
 	if ((p = findie(p, skb->len, WE0_chanID, 0))) {
 		if (p[1] != 1) {
 			l3_1tr6_error(pc, "call sent wrong chanID len", skb);
 			return;
 		}
 		if ((p[2] & 0xf4) != 0x80) {
 			l3_1tr6_error(pc, "call sent wrong WE0_chanID", skb);
 			return;
 		}
 		if ((pc->state == 2) && (pc->para.bchannel != (p[2] & 0x3))) {
 			l3_1tr6_error(pc, "call sent wrong chanID value", skb);
 			return;
 		}
 		pc->para.bchannel = p[2] & 0x3;
 	} else {
 		l3_1tr6_error(pc, "missing call sent WE0_chanID", skb);
 		return;
 	}
 	dev_kfree_skb(skb);
 	L3AddTimer(&pc->timer, T310, CC_T310);
 	newl3state(pc, 3);
 	pc->st->l3.l3l4(pc->st, CC_PROCEEDING | INDICATION, pc);
 }

 static void
 l3_1tr6_alert(struct l3_process *pc, u_char pr, void *arg)
 {
 	struct sk_buff *skb = arg;

 	dev_kfree_skb(skb);
 	L3DelTimer(&pc->timer);	/* T304 */
 	newl3state(pc, 4);
 	pc->st->l3.l3l4(pc->st, CC_ALERTING | INDICATION, pc);
 }

 static void
 l3_1tr6_info(struct l3_process *pc, u_char pr, void *arg)
 {
 	u_char *p;
 	int i, tmpcharge = 0;
 	char a_charge[8], tmp[32];
 	struct sk_buff *skb = arg;

 	p = skb->data;
 	if ((p = findie(p, skb->len, WE6_chargingInfo, 6))) {
 		iecpy(a_charge, p, 1);
 		for (i = 0; i < strlen(a_charge); i++) {
 			tmpcharge *= 10;
 			tmpcharge += a_charge[i] & 0xf;
 		}
 		if (tmpcharge > pc->para.chargeinfo) {
 			pc->para.chargeinfo = tmpcharge;
 			pc->st->l3.l3l4(pc->st, CC_CHARGE | INDICATION, pc);
 		}
 		if (pc->st->l3.debug & L3_DEB_CHARGE) {
 			sprintf(tmp, "charging info %d", pc->para.chargeinfo);
 			l3_debug(pc->st, tmp);
 		}
 	} else if (pc->st->l3.debug & L3_DEB_CHARGE)
 		l3_debug(pc->st, "charging info not found");
 	dev_kfree_skb(skb);

 }

 static void
 l3_1tr6_info_s2(struct l3_process *pc, u_char pr, void *arg)
 {
 	struct sk_buff *skb = arg;

 	dev_kfree_skb(skb);
 }

 static void
 l3_1tr6_connect(struct l3_process *pc, u_char pr, void *arg)
 {
 	struct sk_buff *skb = arg;

 	L3DelTimer(&pc->timer);	/* T310 */
 	if (!findie(skb->data, skb->len, WE6_date, 6)) {
 		l3_1tr6_error(pc, "missing connect date", skb);
 		return;
 	}
 	newl3state(pc, 10);
 	dev_kfree_skb(skb);
 	pc->para.chargeinfo = 0;
 	pc->st->l3.l3l4(pc->st, CC_SETUP | CONFIRM, pc);
 }

 static void
 l3_1tr6_rel(struct l3_process *pc, u_char pr, void *arg)
 {
 	struct sk_buff *skb = arg;
 	u_char *p;

 	p = skb->data;
 	if ((p = findie(p, skb->len, WE0_cause, 0))) {
 		if (p[1] > 0) {
 			pc->para.cause = p[2];
 			if (p[1] > 1)
 				pc->para.loc = p[3];
 			else
 				pc->para.loc = 0;
 		} else {
 			pc->para.cause = 0;
 			pc->para.loc = 0;
 		}
 	} else {
 		pc->para.cause = NO_CAUSE;
 		l3_1tr6_error(pc, "missing REL cause", skb);
 		return;
 	}
 	dev_kfree_skb(skb);
 	StopAllL3Timer(pc);
 	newl3state(pc, 0);
 	l3_1TR6_message(pc, MT_N1_REL_ACK, PROTO_DIS_N1);
 	pc->st->l3.l3l4(pc->st, CC_RELEASE | INDICATION, pc);
 	release_l3_process(pc);
 }

 static void
 l3_1tr6_rel_ack(struct l3_process *pc, u_char pr, void *arg)
 {
 	struct sk_buff *skb = arg;

 	dev_kfree_skb(skb);
 	StopAllL3Timer(pc);
 	newl3state(pc, 0);
 	pc->para.cause = NO_CAUSE;
 	pc->st->l3.l3l4(pc->st, CC_RELEASE | CONFIRM, pc);
 	release_l3_process(pc);
 }

 static void
 l3_1tr6_disc(struct l3_process *pc, u_char pr, void *arg)
 {
 	struct sk_buff *skb = arg;
 	u_char *p;
 	int i, tmpcharge = 0;
 	char a_charge[8], tmp[32];

 	StopAllL3Timer(pc);
 	p = skb->data;
 	if ((p = findie(p, skb->len, WE6_chargingInfo, 6))) {
 		iecpy(a_charge, p, 1);
 		for (i = 0; i < strlen(a_charge); i++) {
 			tmpcharge *= 10;
 			tmpcharge += a_charge[i] & 0xf;
 		}
 		if (tmpcharge > pc->para.chargeinfo) {
 			pc->para.chargeinfo = tmpcharge;
 			pc->st->l3.l3l4(pc->st, CC_CHARGE | INDICATION, pc);
 		}
 		if (pc->st->l3.debug & L3_DEB_CHARGE) {
 			sprintf(tmp, "charging info %d", pc->para.chargeinfo);
 			l3_debug(pc->st, tmp);
 		}
 	} else if (pc->st->l3.debug & L3_DEB_CHARGE)
 		l3_debug(pc->st, "charging info not found");


 	p = skb->data;
 	if ((p = findie(p, skb->len, WE0_cause, 0))) {
 		if (p[1] > 0) {
 			pc->para.cause = p[2];
 			if (p[1] > 1)
 				pc->para.loc = p[3];
 			else
 				pc->para.loc = 0;
 		} else {
 			pc->para.cause = 0;
 			pc->para.loc = 0;
 		}
 	} else {
 		if (pc->st->l3.debug & L3_DEB_WARN)
 			l3_debug(pc->st, "cause not found");
 		pc->para.cause = NO_CAUSE;
 	}
 	if (!findie(skb->data, skb->len, WE6_date, 6)) {
 		l3_1tr6_error(pc, "missing connack date", skb);
 		return;
 	}
 	dev_kfree_skb(skb);
 	newl3state(pc, 12);
 	pc->st->l3.l3l4(pc->st, CC_DISCONNECT | INDICATION, pc);
 }


 static void
 l3_1tr6_connect_ack(struct l3_process *pc, u_char pr, void *arg)
 {
 	struct sk_buff *skb = arg;

 	if (!findie(skb->data, skb->len, WE6_date, 6)) {
 		l3_1tr6_error(pc, "missing connack date", skb);
 		return;
 	}
 	dev_kfree_skb(skb);
 	newl3state(pc, 10);
 	pc->para.chargeinfo = 0;
 	L3DelTimer(&pc->timer);
 	pc->st->l3.l3l4(pc->st, CC_SETUP_COMPL | INDICATION, pc);
 }

 static void
 l3_1tr6_alert_req(struct l3_process *pc, u_char pr, void *arg)
 {
 	newl3state(pc, 7);
 	l3_1TR6_message(pc, MT_N1_ALERT, PROTO_DIS_N1);
 }

 static void
 l3_1tr6_setup_rsp(struct l3_process *pc, u_char pr, void *arg)
 {
 	struct sk_buff *skb;
 	u_char tmp[24];
 	u_char *p = tmp;
 	int l;

 	MsgHead(p, pc->callref, MT_N1_CONN, PROTO_DIS_N1);
 	if (pc->para.spv) {	/* SPV ? */
 		/* NSF SPV */
 		*p++ = WE0_netSpecFac;
 		*p++ = 4;	/* Laenge */
 		*p++ = 0;
 		*p++ = FAC_SPV;	/* SPV */
 		*p++ = pc->para.setup.si1;
 		*p++ = pc->para.setup.si2;
 		*p++ = WE0_netSpecFac;
 		*p++ = 4;	/* Laenge */
 		*p++ = 0;
 		*p++ = FAC_Activate;	/* aktiviere SPV */
 		*p++ = pc->para.setup.si1;
 		*p++ = pc->para.setup.si2;
 	}
 	newl3state(pc, 8);
 	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);
 	L3DelTimer(&pc->timer);
 	L3AddTimer(&pc->timer, T313, CC_T313);
 }

 static void
 l3_1tr6_reset(struct l3_process *pc, u_char pr, void *arg)
 {
 	release_l3_process(pc);
 }

 static void
 l3_1tr6_disconnect_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 = 0x10;
 	u_char clen = 1;

 	if (pc->para.cause > 0)
 		cause = pc->para.cause;
 	/* Map DSS1 causes */
 	switch (cause & 0x7f) {
 		case 0x10:
 			clen = 0;
 			break;
                 case 0x11:
                         cause = CAUSE_UserBusy;
                         break;
 		case 0x15:
 			cause = CAUSE_CallRejected;
 			break;
 	}
 	StopAllL3Timer(pc);
 	MsgHead(p, pc->callref, MT_N1_DISC, PROTO_DIS_N1);
 	*p++ = WE0_cause;
 	*p++ = clen;		/* Laenge */
 	if (clen)
 		*p++ = cause | 0x80;
 	newl3state(pc, 11);
 	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);
 	L3AddTimer(&pc->timer, T305, CC_T305);
 }

 static void
 l3_1tr6_t303(struct l3_process *pc, u_char pr, void *arg)
 {
 	if (pc->N303 > 0) {
 		pc->N303--;
 		L3DelTimer(&pc->timer);
 		l3_1tr6_setup_req(pc, pr, arg);
 	} else {
 		L3DelTimer(&pc->timer);
 		pc->para.cause = 0;
 		l3_1tr6_disconnect_req(pc, 0, NULL);
 	}
 }

 static void
 l3_1tr6_t304(struct l3_process *pc, u_char pr, void *arg)
 {
 	L3DelTimer(&pc->timer);
 	pc->para.cause = 0xE6;
 	l3_1tr6_disconnect_req(pc, pr, NULL);
 	pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
 }

 static void
 l3_1tr6_t305(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 = 0x90;
 	u_char clen = 1;

 	L3DelTimer(&pc->timer);
 	if (pc->para.cause != NO_CAUSE)
 		cause = pc->para.cause;
 	/* Map DSS1 causes */
 	switch (cause & 0x7f) {
 		case 0x10:
 			clen = 0;
 			break;
 		case 0x15:
 			cause = CAUSE_CallRejected;
 			break;
 	}
 	MsgHead(p, pc->callref, MT_N1_REL, PROTO_DIS_N1);
 	*p++ = WE0_cause;
 	*p++ = clen;		/* Laenge */
 	if (clen)
 		*p++ = cause;
 	newl3state(pc, 19);
 	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);
 	L3AddTimer(&pc->timer, T308, CC_T308_1);
 }

 static void
 l3_1tr6_t310(struct l3_process *pc, u_char pr, void *arg)
 {
 	L3DelTimer(&pc->timer);
 	pc->para.cause = 0xE6;
 	l3_1tr6_disconnect_req(pc, pr, NULL);
 	pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
 }

 static void
 l3_1tr6_t313(struct l3_process *pc, u_char pr, void *arg)
 {
 	L3DelTimer(&pc->timer);
 	pc->para.cause = 0xE6;
 	l3_1tr6_disconnect_req(pc, pr, NULL);
 	pc->st->l3.l3l4(pc->st, CC_CONNECT_ERR, pc);
 }

 static void
 l3_1tr6_t308_1(struct l3_process *pc, u_char pr, void *arg)
 {
 	L3DelTimer(&pc->timer);
 	l3_1TR6_message(pc, MT_N1_REL, PROTO_DIS_N1);
 	L3AddTimer(&pc->timer, T308, CC_T308_2);
 	newl3state(pc, 19);
 }

 static void
 l3_1tr6_t308_2(struct l3_process *pc, u_char pr, void *arg)
 {
 	L3DelTimer(&pc->timer);
 	pc->st->l3.l3l4(pc->st, CC_RELEASE_ERR, pc);
 	release_l3_process(pc);
 }

 static void
 l3_1tr6_dl_reset(struct l3_process *pc, u_char pr, void *arg)
 {
         pc->para.cause = CAUSE_LocalProcErr;
         l3_1tr6_disconnect_req(pc, pr, NULL);
         pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
 }

 static void
 l3_1tr6_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);
 }

 /* *INDENT-OFF* */
 static struct stateentry downstl[] =
 {
 	{SBIT(0),
 	 CC_SETUP | REQUEST, l3_1tr6_setup_req},
    	{SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(6) | SBIT(7) | SBIT(8) |
     	 SBIT(10),
     	 CC_DISCONNECT | REQUEST, l3_1tr6_disconnect_req},
 	{SBIT(12),
 	 CC_RELEASE | REQUEST, l3_1tr6_release_req},
 	{SBIT(6),
 	 CC_IGNORE | REQUEST, l3_1tr6_reset},
 	{SBIT(6),
 	 CC_REJECT | REQUEST, l3_1tr6_disconnect_req},
 	{SBIT(6),
 	 CC_ALERTING | REQUEST, l3_1tr6_alert_req},
 	{SBIT(6) | SBIT(7),
 	 CC_SETUP | RESPONSE, l3_1tr6_setup_rsp},
 	{SBIT(1),
 	 CC_T303, l3_1tr6_t303},
 	{SBIT(2),
 	 CC_T304, l3_1tr6_t304},
 	{SBIT(3),
 	 CC_T310, l3_1tr6_t310},
 	{SBIT(8),
 	 CC_T313, l3_1tr6_t313},
 	{SBIT(11),
 	 CC_T305, l3_1tr6_t305},
 	{SBIT(19),
 	 CC_T308_1, l3_1tr6_t308_1},
 	{SBIT(19),
 	 CC_T308_2, l3_1tr6_t308_2},
 };

 #define DOWNSTL_LEN \
 	(sizeof(downstl) / sizeof(struct stateentry))

 static struct stateentry datastln1[] =
 {
 	{SBIT(0),
 	 MT_N1_INVALID, l3_1tr6_invalid},
 	{SBIT(0),
 	 MT_N1_SETUP, l3_1tr6_setup},
 	{SBIT(1),
 	 MT_N1_SETUP_ACK, l3_1tr6_setup_ack},
 	{SBIT(1) | SBIT(2),
 	 MT_N1_CALL_SENT, l3_1tr6_call_sent},
 	{SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) | SBIT(10),
 	 MT_N1_DISC, l3_1tr6_disc},
 	{SBIT(2) | SBIT(3) | SBIT(4),
 	 MT_N1_ALERT, l3_1tr6_alert},
 	{SBIT(2) | SBIT(3) | SBIT(4),
 	 MT_N1_CONN, l3_1tr6_connect},
 	{SBIT(2),
 	 MT_N1_INFO, l3_1tr6_info_s2},
 	{SBIT(8),
 	 MT_N1_CONN_ACK, l3_1tr6_connect_ack},
 	{SBIT(10),
 	 MT_N1_INFO, l3_1tr6_info},
 	{SBIT(0) | SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) |
 	 SBIT(10) | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17),
 	 MT_N1_REL, l3_1tr6_rel},
 	{SBIT(19),
 	 MT_N1_REL, l3_1tr6_rel_ack},
 	{SBIT(0) | SBIT(1) | SBIT(2) | SBIT(3) | SBIT(4) | SBIT(7) | SBIT(8) |
 	 SBIT(10) | SBIT(11) | SBIT(12) | SBIT(15) | SBIT(17),
 	 MT_N1_REL_ACK, l3_1tr6_invalid},
 	{SBIT(19),
 	 MT_N1_REL_ACK, l3_1tr6_rel_ack}
 };

 #define DATASTLN1_LEN \
 	(sizeof(datastln1) / sizeof(struct stateentry))

 static struct stateentry manstatelist[] =
 {
         {SBIT(2),
          DL_ESTABLISH | INDICATION, l3_1tr6_dl_reset},
         {ALL_STATES,
          DL_RELEASE | INDICATION, l3_1tr6_dl_release},
 };

 #define MANSLLEN \
         (sizeof(manstatelist) / sizeof(struct stateentry))
 /* *INDENT-ON* */

 static void
 up1tr6(struct PStack *st, int pr, void *arg)
 {
 	int i, mt, cr;
 	struct l3_process *proc;
 	struct sk_buff *skb = arg;
 	char tmp[80];

 	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;
 	}
 	if (skb->len < 4) {
 		if (st->l3.debug & L3_DEB_PROTERR) {
 			sprintf(tmp, "up1tr6 len only %d", skb->len);
 			l3_debug(st, tmp);
 		}
 		dev_kfree_skb(skb);
 		return;
 	}
 	if ((skb->data[0] & 0xfe) != PROTO_DIS_N0) {
 		if (st->l3.debug & L3_DEB_PROTERR) {
 			sprintf(tmp, "up1tr6%sunexpected discriminator %x message len %d",
 				(pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
 				skb->data[0], skb->len);
 			l3_debug(st, tmp);
 		}
 		dev_kfree_skb(skb);
 		return;
 	}
 	if (skb->data[1] != 1) {
 		if (st->l3.debug & L3_DEB_PROTERR) {
 			sprintf(tmp, "up1tr6 CR len not 1");
 			l3_debug(st, tmp);
 		}
 		dev_kfree_skb(skb);
 		return;
 	}
 	cr = skb->data[2];
 	mt = skb->data[3];
 	if (skb->data[0] == PROTO_DIS_N0) {
 		dev_kfree_skb(skb);
 		if (st->l3.debug & L3_DEB_STATE) {
 			sprintf(tmp, "up1tr6%s N0 mt %x unhandled",
 			     (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", mt);
 			l3_debug(st, tmp);
 		}
 	} else if (skb->data[0] == PROTO_DIS_N1) {
 		if (!(proc = getl3proc(st, cr))) {
 			if (mt == MT_N1_SETUP) {
 				if (cr < 128) {
 					if (!(proc = new_l3_process(st, cr))) {
 						if (st->l3.debug & L3_DEB_PROTERR) {
 							sprintf(tmp, "up1tr6 no roc mem");
 							l3_debug(st, tmp);
 						}
 						dev_kfree_skb(skb);
 						return;
 					}
 				} else {
 					dev_kfree_skb(skb);
 					return;
 				}
 			} else if ((mt == MT_N1_REL) || (mt == MT_N1_REL_ACK) ||
 				(mt == MT_N1_CANC_ACK) || (mt == MT_N1_CANC_REJ) ||
 				(mt == MT_N1_REG_ACK) || (mt == MT_N1_REG_REJ) ||
 				(mt == MT_N1_SUSP_ACK) || (mt == MT_N1_RES_REJ) ||
 				(mt == MT_N1_INFO)) {
 				dev_kfree_skb(skb);
 				return;
 			} else {
 				if (!(proc = new_l3_process(st, cr))) {
 					if (st->l3.debug & L3_DEB_PROTERR) {
 						sprintf(tmp, "up1tr6 no roc mem");
 						l3_debug(st, tmp);
 					}
 					dev_kfree_skb(skb);
 					return;
 				}
 				mt = MT_N1_INVALID;
 			}
 		}
 		for (i = 0; i < DATASTLN1_LEN; i++)
 			if ((mt == datastln1[i].primitive) &&
 			    ((1 << proc->state) & datastln1[i].state))
 				break;
 		if (i == DATASTLN1_LEN) {
 			dev_kfree_skb(skb);
 			if (st->l3.debug & L3_DEB_STATE) {
 				sprintf(tmp, "up1tr6%sstate %d mt %x unhandled",
 				  (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
 					proc->state, mt);
 				l3_debug(st, tmp);
 			}
 			return;
 		} else {
 			if (st->l3.debug & L3_DEB_STATE) {
 				sprintf(tmp, "up1tr6%sstate %d mt %x",
 				  (pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
 					proc->state, mt);
 				l3_debug(st, tmp);
 			}
 			datastln1[i].rout(proc, pr, skb);
 		}
 	}
 }

 static void
 down1tr6(struct PStack *st, int pr, void *arg)
 {
 	int i, cr;
 	struct l3_process *proc;
 	struct Channel *chan;
 	char tmp[80];

 	if ((DL_ESTABLISH | REQUEST)== pr) {
 		l3_msg(st, pr, NULL);
 		return;
 	} else if ((CC_SETUP | REQUEST) == pr) {
 		chan = arg;
 		cr = newcallref();
 		cr |= 0x80;
 		if (!(proc = new_l3_process(st, cr))) {
 			return;
 		} else {
 			proc->chan = chan;
 			chan->proc = proc;
 			memcpy(&proc->para.setup, &chan->setup, sizeof(setup_parm));
 			proc->callref = cr;
 		}
 	} else {
 		proc = arg;
 	}

 	for (i = 0; i < DOWNSTL_LEN; i++)
 		if ((pr == downstl[i].primitive) &&
 		    ((1 << proc->state) & downstl[i].state))
 			break;
 	if (i == DOWNSTL_LEN) {
 		if (st->l3.debug & L3_DEB_STATE) {
 			sprintf(tmp, "down1tr6 state %d prim %d unhandled",
 				proc->state, pr);
 			l3_debug(st, tmp);
 		}
 	} else {
 		if (st->l3.debug & L3_DEB_STATE) {
 			sprintf(tmp, "down1tr6 state %d prim %d",
 				proc->state, pr);
 			l3_debug(st, tmp);
 		}
 		downstl[i].rout(proc, pr, arg);
 	}
 }

 static void
 man1tr6(struct PStack *st, int pr, void *arg)
 {
         int i;
         struct l3_process *proc = arg;

         if (!proc) {
                 printk(KERN_ERR "HiSax man1tr6 without proc pr=%04x\n", pr);
                 return;
         }
         for (i = 0; i < MANSLLEN; i++)
                 if ((pr == manstatelist[i].primitive) &&
                     ((1 << proc->state) & manstatelist[i].state))
                         break;
         if (i == MANSLLEN) {
                 if (st->l3.debug & L3_DEB_STATE) {
                         l3_debug(st, "cr %d man1tr6 state %d prim %d unhandled",
                                 proc->callref & 0x7f, proc->state, pr);
                 }
         } else {
                 if (st->l3.debug & L3_DEB_STATE) {
                         l3_debug(st, "cr %d man1tr6 state %d prim %d",
                                 proc->callref & 0x7f, proc->state, pr);
                 }
                 manstatelist[i].rout(proc, pr, arg);
         }
 }

 void
 setstack_1tr6(struct PStack *st)
 {
 	char tmp[64];

 	st->lli.l4l3 = down1tr6;
 	st->l2.l2l3 = up1tr6;
 	st->l3.l3ml3 = man1tr6;
 	st->l3.N303 = 0;

 	strcpy(tmp, l3_1tr6_revision);
 	printk(KERN_INFO "HiSax: 1TR6 Rev. %s\n", HiSax_getrev(tmp));
 }
	/* $Id: l3_1tr6.c,v 2.15.2.3 2004/01/13 14:31:25 keil Exp $
	*
	* German 1TR6 D-channel protocol
	*
	* Author Karsten Keil
	* 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
	*
	*/

	#include "hisax.h"
	#include "l3_1tr6.h"
	#include "isdnl3.h"
	#include <linux/ctype.h>

	extern char HiSax_getrev(const char revision);
	const char *l3_1tr6_revision = "$Revision: 2.15.2.3 $";

	#define MsgHead(ptr, cref, mty, dis) \
	*ptr++ = dis; \
	*ptr++ = 0x1; \
	*ptr++ = cref ^ 0x80; \
	*ptr++ = mty

	static void
	l3_1TR6_message(struct l3_process *pc, u_char mt, u_char pd)
	{
	struct sk_buff *skb;
	u_char *p;

	if (!(skb = l3_alloc_skb(4)))
	return;
	p = skb_put(skb, 4);
	MsgHead(p, pc->callref, mt, pd);
	l3_msg(pc->st, DL_DATA \| REQUEST, skb);
	}

	static void
	l3_1tr6_release_req(struct l3_process pc, u_char pr, void arg)
	{
	StopAllL3Timer(pc);
	newl3state(pc, 19);
	l3_1TR6_message(pc, MT_N1_REL, PROTO_DIS_N1);
	L3AddTimer(&pc->timer, T308, CC_T308_1);
	}

	static void
	l3_1tr6_invalid(struct l3_process pc, u_char pr, void arg)
	{
	struct sk_buff *skb = arg;

	dev_kfree_skb(skb);
	l3_1tr6_release_req(pc, 0, NULL);
	}

	static void
	l3_1tr6_error(struct l3_process pc, u_char msg, struct sk_buff *skb)
	{
	dev_kfree_skb(skb);
	if (pc->st->l3.debug & L3_DEB_WARN)
	l3_debug(pc->st, msg);
	l3_1tr6_release_req(pc, 0, NULL);
	}

	static void
	l3_1tr6_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 *teln;
	u_char *eaz;
	u_char channel = 0;
	int l;

	MsgHead(p, pc->callref, MT_N1_SETUP, PROTO_DIS_N1);
	teln = pc->para.setup.phone;
	pc->para.spv = 0;
	if (!isdigit(*teln)) {
	switch (0x5f & *teln) {
	case 'S':
	pc->para.spv = 1;
	break;
	case 'C':
	channel = 0x08;
	case 'P':
	channel \|= 0x80;
	teln++;
	if (*teln == '1')
	channel \|= 0x01;
	else
	channel \|= 0x02;
	break;
	default:
	if (pc->st->l3.debug & L3_DEB_WARN)
	l3_debug(pc->st, "Wrong MSN Code");
	break;
	}
	teln++;
	}
	if (channel) {
	p++ = 0x18; / channel indicator */
	*p++ = 1;
	*p++ = channel;
	}
	if (pc->para.spv) { /* SPV ? */
	/* NSF SPV */
	*p++ = WE0_netSpecFac;
	p++ = 4; / Laenge */
	*p++ = 0;
	p++ = FAC_SPV; / SPV */
	p++ = pc->para.setup.si1; / 0 for all Services */
	p++ = pc->para.setup.si2; / 0 for all Services */
	*p++ = WE0_netSpecFac;
	p++ = 4; / Laenge */
	*p++ = 0;
	p++ = FAC_Activate; / aktiviere SPV (default) */
	p++ = pc->para.setup.si1; / 0 for all Services */
	p++ = pc->para.setup.si2; / 0 for all Services */
	}
	eaz = pc->para.setup.eazmsn;
	if (*eaz) {
	*p++ = WE0_origAddr;
	*p++ = strlen(eaz) + 1;
	/* Classify as AnyPref. */
	p++ = 0x81; / Ext = '1'B, Type = '000'B, Plan = '0001'B. */
	while (*eaz)
	p++ = eaz++ & 0x7f;
	}
	*p++ = WE0_destAddr;
	*p++ = strlen(teln) + 1;
	/* Classify as AnyPref. */
	p++ = 0x81; / Ext = '1'B, Type = '000'B, Plan = '0001'B. */
	while (*teln)
	p++ = teln++ & 0x7f;

	*p++ = WE_Shift_F6;
	/* Codesatz 6 fuer Service */
	*p++ = WE6_serviceInd;
	p++ = 2; / len=2 info,info2 */
	*p++ = pc->para.setup.si1;
	*p++ = pc->para.setup.si2;

	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
	l3_1tr6_setup(struct l3_process pc, u_char pr, void arg)
	{
	u_char *p;
	int bcfound = 0;
	char tmp[80];
	struct sk_buff *skb = arg;

	p = skb->data;

	/* Channel Identification */
	p = skb->data;
	if ((p = findie(p, skb->len, WE0_chanID, 0))) {
	if (p[1] != 1) {
	l3_1tr6_error(pc, "setup wrong chanID len", skb);
	return;
	}
	if ((p[2] & 0xf4) != 0x80) {
	l3_1tr6_error(pc, "setup wrong WE0_chanID", skb);
	return;
	}
	if ((pc->para.bchannel = p[2] & 0x3))
	bcfound++;
	} else {
	l3_1tr6_error(pc, "missing setup chanID", skb);
	return;
	}

	p = skb->data;
	if ((p = findie(p, skb->len, WE6_serviceInd, 6))) {
	pc->para.setup.si1 = p[2];
	pc->para.setup.si2 = p[3];
	} else {
	l3_1tr6_error(pc, "missing setup SI", skb);
	return;
	}

	p = skb->data;
	if ((p = findie(p, skb->len, WE0_destAddr, 0)))
	iecpy(pc->para.setup.eazmsn, p, 1);
	else
	pc->para.setup.eazmsn[0] = 0;

	p = skb->data;
	if ((p = findie(p, skb->len, WE0_origAddr, 0))) {
	iecpy(pc->para.setup.phone, p, 1);
	} else
	pc->para.setup.phone[0] = 0;

	p = skb->data;
	pc->para.spv = 0;
	if ((p = findie(p, skb->len, WE0_netSpecFac, 0))) {
	if ((FAC_SPV == p[3]) \|\| (FAC_Activate == p[3]))
	pc->para.spv = 1;
	}
	dev_kfree_skb(skb);

	/* Signal all services, linklevel takes care of Service-Indicator */
	if (bcfound) {
	if ((pc->para.setup.si1 != 7) && (pc->st->l3.debug & L3_DEB_WARN)) {
	sprintf(tmp, "non-digital call: %s -> %s",
	pc->para.setup.phone,
	pc->para.setup.eazmsn);
	l3_debug(pc->st, tmp);
	}
	newl3state(pc, 6);
	pc->st->l3.l3l4(pc->st, CC_SETUP \| INDICATION, pc);
	} else
	release_l3_process(pc);
	}

	static void
	l3_1tr6_setup_ack(struct l3_process pc, u_char pr, void arg)
	{
	u_char *p;
	struct sk_buff *skb = arg;

	L3DelTimer(&pc->timer);
	p = skb->data;
	newl3state(pc, 2);
	if ((p = findie(p, skb->len, WE0_chanID, 0))) {
	if (p[1] != 1) {
	l3_1tr6_error(pc, "setup_ack wrong chanID len", skb);
	return;
	}
	if ((p[2] & 0xf4) != 0x80) {
	l3_1tr6_error(pc, "setup_ack wrong WE0_chanID", skb);
	return;
	}
	pc->para.bchannel = p[2] & 0x3;
	} else {
	l3_1tr6_error(pc, "missing setup_ack WE0_chanID", skb);
	return;
	}
	dev_kfree_skb(skb);
	L3AddTimer(&pc->timer, T304, CC_T304);
	pc->st->l3.l3l4(pc->st, CC_MORE_INFO \| INDICATION, pc);
	}

	static void
	l3_1tr6_call_sent(struct l3_process pc, u_char pr, void arg)
	{
	u_char *p;
	struct sk_buff *skb = arg;

	L3DelTimer(&pc->timer);
	p = skb->data;
	if ((p = findie(p, skb->len, WE0_chanID, 0))) {
	if (p[1] != 1) {
	l3_1tr6_error(pc, "call sent wrong chanID len", skb);
	return;
	}
	if ((p[2] & 0xf4) != 0x80) {
	l3_1tr6_error(pc, "call sent wrong WE0_chanID", skb);
	return;
	}
	if ((pc->state == 2) && (pc->para.bchannel != (p[2] & 0x3))) {
	l3_1tr6_error(pc, "call sent wrong chanID value", skb);
	return;
	}
	pc->para.bchannel = p[2] & 0x3;
	} else {
	l3_1tr6_error(pc, "missing call sent WE0_chanID", skb);
	return;
	}
	dev_kfree_skb(skb);
	L3AddTimer(&pc->timer, T310, CC_T310);
	newl3state(pc, 3);
	pc->st->l3.l3l4(pc->st, CC_PROCEEDING \| INDICATION, pc);
	}

	static void
	l3_1tr6_alert(struct l3_process pc, u_char pr, void arg)
	{
	struct sk_buff *skb = arg;

	dev_kfree_skb(skb);
	L3DelTimer(&pc->timer); /* T304 */
	newl3state(pc, 4);
	pc->st->l3.l3l4(pc->st, CC_ALERTING \| INDICATION, pc);
	}

	static void
	l3_1tr6_info(struct l3_process pc, u_char pr, void arg)
	{
	u_char *p;
	int i, tmpcharge = 0;
	char a_charge[8], tmp[32];
	struct sk_buff *skb = arg;

	p = skb->data;
	if ((p = findie(p, skb->len, WE6_chargingInfo, 6))) {
	iecpy(a_charge, p, 1);
	for (i = 0; i < strlen(a_charge); i++) {
	tmpcharge *= 10;
	tmpcharge += a_charge[i] & 0xf;
	}
	if (tmpcharge > pc->para.chargeinfo) {
	pc->para.chargeinfo = tmpcharge;
	pc->st->l3.l3l4(pc->st, CC_CHARGE \| INDICATION, pc);
	}
	if (pc->st->l3.debug & L3_DEB_CHARGE) {
	sprintf(tmp, "charging info %d", pc->para.chargeinfo);
	l3_debug(pc->st, tmp);
	}
	} else if (pc->st->l3.debug & L3_DEB_CHARGE)
	l3_debug(pc->st, "charging info not found");
	dev_kfree_skb(skb);

	}

	static void
	l3_1tr6_info_s2(struct l3_process pc, u_char pr, void arg)
	{
	struct sk_buff *skb = arg;

	dev_kfree_skb(skb);
	}

	static void
	l3_1tr6_connect(struct l3_process pc, u_char pr, void arg)
	{
	struct sk_buff *skb = arg;

	L3DelTimer(&pc->timer); /* T310 */
	if (!findie(skb->data, skb->len, WE6_date, 6)) {
	l3_1tr6_error(pc, "missing connect date", skb);
	return;
	}
	newl3state(pc, 10);
	dev_kfree_skb(skb);
	pc->para.chargeinfo = 0;
	pc->st->l3.l3l4(pc->st, CC_SETUP \| CONFIRM, pc);
	}

	static void
	l3_1tr6_rel(struct l3_process pc, u_char pr, void arg)
	{
	struct sk_buff *skb = arg;
	u_char *p;

	p = skb->data;
	if ((p = findie(p, skb->len, WE0_cause, 0))) {
	if (p[1] > 0) {
	pc->para.cause = p[2];
	if (p[1] > 1)
	pc->para.loc = p[3];
	else
	pc->para.loc = 0;
	} else {
	pc->para.cause = 0;
	pc->para.loc = 0;
	}
	} else {
	pc->para.cause = NO_CAUSE;
	l3_1tr6_error(pc, "missing REL cause", skb);
	return;
	}
	dev_kfree_skb(skb);
	StopAllL3Timer(pc);
	newl3state(pc, 0);
	l3_1TR6_message(pc, MT_N1_REL_ACK, PROTO_DIS_N1);
	pc->st->l3.l3l4(pc->st, CC_RELEASE \| INDICATION, pc);
	release_l3_process(pc);
	}

	static void
	l3_1tr6_rel_ack(struct l3_process pc, u_char pr, void arg)
	{
	struct sk_buff *skb = arg;

	dev_kfree_skb(skb);
	StopAllL3Timer(pc);
	newl3state(pc, 0);
	pc->para.cause = NO_CAUSE;
	pc->st->l3.l3l4(pc->st, CC_RELEASE \| CONFIRM, pc);
	release_l3_process(pc);
	}

	static void
	l3_1tr6_disc(struct l3_process pc, u_char pr, void arg)
	{
	struct sk_buff *skb = arg;
	u_char *p;
	int i, tmpcharge = 0;
	char a_charge[8], tmp[32];

	StopAllL3Timer(pc);
	p = skb->data;
	if ((p = findie(p, skb->len, WE6_chargingInfo, 6))) {
	iecpy(a_charge, p, 1);
	for (i = 0; i < strlen(a_charge); i++) {
	tmpcharge *= 10;
	tmpcharge += a_charge[i] & 0xf;
	}
	if (tmpcharge > pc->para.chargeinfo) {
	pc->para.chargeinfo = tmpcharge;
	pc->st->l3.l3l4(pc->st, CC_CHARGE \| INDICATION, pc);
	}
	if (pc->st->l3.debug & L3_DEB_CHARGE) {
	sprintf(tmp, "charging info %d", pc->para.chargeinfo);
	l3_debug(pc->st, tmp);
	}
	} else if (pc->st->l3.debug & L3_DEB_CHARGE)
	l3_debug(pc->st, "charging info not found");


	p = skb->data;
	if ((p = findie(p, skb->len, WE0_cause, 0))) {
	if (p[1] > 0) {
	pc->para.cause = p[2];
	if (p[1] > 1)
	pc->para.loc = p[3];
	else
	pc->para.loc = 0;
	} else {
	pc->para.cause = 0;
	pc->para.loc = 0;
	}
	} else {
	if (pc->st->l3.debug & L3_DEB_WARN)
	l3_debug(pc->st, "cause not found");
	pc->para.cause = NO_CAUSE;
	}
	if (!findie(skb->data, skb->len, WE6_date, 6)) {
	l3_1tr6_error(pc, "missing connack date", skb);
	return;
	}
	dev_kfree_skb(skb);
	newl3state(pc, 12);
	pc->st->l3.l3l4(pc->st, CC_DISCONNECT \| INDICATION, pc);
	}


	static void
	l3_1tr6_connect_ack(struct l3_process pc, u_char pr, void arg)
	{
	struct sk_buff *skb = arg;

	if (!findie(skb->data, skb->len, WE6_date, 6)) {
	l3_1tr6_error(pc, "missing connack date", skb);
	return;
	}
	dev_kfree_skb(skb);
	newl3state(pc, 10);
	pc->para.chargeinfo = 0;
	L3DelTimer(&pc->timer);
	pc->st->l3.l3l4(pc->st, CC_SETUP_COMPL \| INDICATION, pc);
	}

	static void
	l3_1tr6_alert_req(struct l3_process pc, u_char pr, void arg)
	{
	newl3state(pc, 7);
	l3_1TR6_message(pc, MT_N1_ALERT, PROTO_DIS_N1);
	}

	static void
	l3_1tr6_setup_rsp(struct l3_process pc, u_char pr, void arg)
	{
	struct sk_buff *skb;
	u_char tmp[24];
	u_char *p = tmp;
	int l;

	MsgHead(p, pc->callref, MT_N1_CONN, PROTO_DIS_N1);
	if (pc->para.spv) { /* SPV ? */
	/* NSF SPV */
	*p++ = WE0_netSpecFac;
	p++ = 4; / Laenge */
	*p++ = 0;
	p++ = FAC_SPV; / SPV */
	*p++ = pc->para.setup.si1;
	*p++ = pc->para.setup.si2;
	*p++ = WE0_netSpecFac;
	p++ = 4; / Laenge */
	*p++ = 0;
	p++ = FAC_Activate; / aktiviere SPV */
	*p++ = pc->para.setup.si1;
	*p++ = pc->para.setup.si2;
	}
	newl3state(pc, 8);
	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);
	L3DelTimer(&pc->timer);
	L3AddTimer(&pc->timer, T313, CC_T313);
	}

	static void
	l3_1tr6_reset(struct l3_process pc, u_char pr, void arg)
	{
	release_l3_process(pc);
	}

	static void
	l3_1tr6_disconnect_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 = 0x10;
	u_char clen = 1;

	if (pc->para.cause > 0)
	cause = pc->para.cause;
	/* Map DSS1 causes */
	switch (cause & 0x7f) {
	case 0x10:
	clen = 0;
	break;
	case 0x11:
	cause = CAUSE_UserBusy;
	break;
	case 0x15:
	cause = CAUSE_CallRejected;
	break;
	}
	StopAllL3Timer(pc);
	MsgHead(p, pc->callref, MT_N1_DISC, PROTO_DIS_N1);
	*p++ = WE0_cause;
	p++ = clen; / Laenge */
	if (clen)
	*p++ = cause \| 0x80;
	newl3state(pc, 11);
	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);
	L3AddTimer(&pc->timer, T305, CC_T305);
	}

	static void
	l3_1tr6_t303(struct l3_process pc, u_char pr, void arg)
	{
	if (pc->N303 > 0) {
	pc->N303--;
	L3DelTimer(&pc->timer);
	l3_1tr6_setup_req(pc, pr, arg);
	} else {
	L3DelTimer(&pc->timer);
	pc->para.cause = 0;
	l3_1tr6_disconnect_req(pc, 0, NULL);
	}
	}

	static void
	l3_1tr6_t304(struct l3_process pc, u_char pr, void arg)
	{
	L3DelTimer(&pc->timer);
	pc->para.cause = 0xE6;
	l3_1tr6_disconnect_req(pc, pr, NULL);
	pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
	}

	static void
	l3_1tr6_t305(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 = 0x90;
	u_char clen = 1;

	L3DelTimer(&pc->timer);
	if (pc->para.cause != NO_CAUSE)
	cause = pc->para.cause;
	/* Map DSS1 causes */
	switch (cause & 0x7f) {
	case 0x10:
	clen = 0;
	break;
	case 0x15:
	cause = CAUSE_CallRejected;
	break;
	}
	MsgHead(p, pc->callref, MT_N1_REL, PROTO_DIS_N1);
	*p++ = WE0_cause;
	p++ = clen; / Laenge */
	if (clen)
	*p++ = cause;
	newl3state(pc, 19);
	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);
	L3AddTimer(&pc->timer, T308, CC_T308_1);
	}

	static void
	l3_1tr6_t310(struct l3_process pc, u_char pr, void arg)
	{
	L3DelTimer(&pc->timer);
	pc->para.cause = 0xE6;
	l3_1tr6_disconnect_req(pc, pr, NULL);
	pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
	}

	static void
	l3_1tr6_t313(struct l3_process pc, u_char pr, void arg)
	{
	L3DelTimer(&pc->timer);
	pc->para.cause = 0xE6;
	l3_1tr6_disconnect_req(pc, pr, NULL);
	pc->st->l3.l3l4(pc->st, CC_CONNECT_ERR, pc);
	}

	static void
	l3_1tr6_t308_1(struct l3_process pc, u_char pr, void arg)
	{
	L3DelTimer(&pc->timer);
	l3_1TR6_message(pc, MT_N1_REL, PROTO_DIS_N1);
	L3AddTimer(&pc->timer, T308, CC_T308_2);
	newl3state(pc, 19);
	}

	static void
	l3_1tr6_t308_2(struct l3_process pc, u_char pr, void arg)
	{
	L3DelTimer(&pc->timer);
	pc->st->l3.l3l4(pc->st, CC_RELEASE_ERR, pc);
	release_l3_process(pc);
	}

	static void
	l3_1tr6_dl_reset(struct l3_process pc, u_char pr, void arg)
	{
	pc->para.cause = CAUSE_LocalProcErr;
	l3_1tr6_disconnect_req(pc, pr, NULL);
	pc->st->l3.l3l4(pc->st, CC_SETUP_ERR, pc);
	}

	static void
	l3_1tr6_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);
	}

	/* INDENT-OFF */
	static struct stateentry downstl[] =
	{
	{SBIT(0),
	CC_SETUP \| REQUEST, l3_1tr6_setup_req},
	{SBIT(1) \| SBIT(2) \| SBIT(3) \| SBIT(4) \| SBIT(6) \| SBIT(7) \| SBIT(8) \|
	SBIT(10),
	CC_DISCONNECT \| REQUEST, l3_1tr6_disconnect_req},
	{SBIT(12),
	CC_RELEASE \| REQUEST, l3_1tr6_release_req},
	{SBIT(6),
	CC_IGNORE \| REQUEST, l3_1tr6_reset},
	{SBIT(6),
	CC_REJECT \| REQUEST, l3_1tr6_disconnect_req},
	{SBIT(6),
	CC_ALERTING \| REQUEST, l3_1tr6_alert_req},
	{SBIT(6) \| SBIT(7),
	CC_SETUP \| RESPONSE, l3_1tr6_setup_rsp},
	{SBIT(1),
	CC_T303, l3_1tr6_t303},
	{SBIT(2),
	CC_T304, l3_1tr6_t304},
	{SBIT(3),
	CC_T310, l3_1tr6_t310},
	{SBIT(8),
	CC_T313, l3_1tr6_t313},
	{SBIT(11),
	CC_T305, l3_1tr6_t305},
	{SBIT(19),
	CC_T308_1, l3_1tr6_t308_1},
	{SBIT(19),
	CC_T308_2, l3_1tr6_t308_2},
	};

	#define DOWNSTL_LEN \
	(sizeof(downstl) / sizeof(struct stateentry))

	static struct stateentry datastln1[] =
	{
	{SBIT(0),
	MT_N1_INVALID, l3_1tr6_invalid},
	{SBIT(0),
	MT_N1_SETUP, l3_1tr6_setup},
	{SBIT(1),
	MT_N1_SETUP_ACK, l3_1tr6_setup_ack},
	{SBIT(1) \| SBIT(2),
	MT_N1_CALL_SENT, l3_1tr6_call_sent},
	{SBIT(1) \| SBIT(2) \| SBIT(3) \| SBIT(4) \| SBIT(7) \| SBIT(8) \| SBIT(10),
	MT_N1_DISC, l3_1tr6_disc},
	{SBIT(2) \| SBIT(3) \| SBIT(4),
	MT_N1_ALERT, l3_1tr6_alert},
	{SBIT(2) \| SBIT(3) \| SBIT(4),
	MT_N1_CONN, l3_1tr6_connect},
	{SBIT(2),
	MT_N1_INFO, l3_1tr6_info_s2},
	{SBIT(8),
	MT_N1_CONN_ACK, l3_1tr6_connect_ack},
	{SBIT(10),
	MT_N1_INFO, l3_1tr6_info},
	{SBIT(0) \| SBIT(1) \| SBIT(2) \| SBIT(3) \| SBIT(4) \| SBIT(7) \| SBIT(8) \|
	SBIT(10) \| SBIT(11) \| SBIT(12) \| SBIT(15) \| SBIT(17),
	MT_N1_REL, l3_1tr6_rel},
	{SBIT(19),
	MT_N1_REL, l3_1tr6_rel_ack},
	{SBIT(0) \| SBIT(1) \| SBIT(2) \| SBIT(3) \| SBIT(4) \| SBIT(7) \| SBIT(8) \|
	SBIT(10) \| SBIT(11) \| SBIT(12) \| SBIT(15) \| SBIT(17),
	MT_N1_REL_ACK, l3_1tr6_invalid},
	{SBIT(19),
	MT_N1_REL_ACK, l3_1tr6_rel_ack}
	};

	#define DATASTLN1_LEN \
	(sizeof(datastln1) / sizeof(struct stateentry))

	static struct stateentry manstatelist[] =
	{
	{SBIT(2),
	DL_ESTABLISH \| INDICATION, l3_1tr6_dl_reset},
	{ALL_STATES,
	DL_RELEASE \| INDICATION, l3_1tr6_dl_release},
	};

	#define MANSLLEN \
	(sizeof(manstatelist) / sizeof(struct stateentry))
	/* INDENT-ON */

	static void
	up1tr6(struct PStack st, int pr, void arg)
	{
	int i, mt, cr;
	struct l3_process *proc;
	struct sk_buff *skb = arg;
	char tmp[80];

	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;
	}
	if (skb->len < 4) {
	if (st->l3.debug & L3_DEB_PROTERR) {
	sprintf(tmp, "up1tr6 len only %d", skb->len);
	l3_debug(st, tmp);
	}
	dev_kfree_skb(skb);
	return;
	}
	if ((skb->data[0] & 0xfe) != PROTO_DIS_N0) {
	if (st->l3.debug & L3_DEB_PROTERR) {
	sprintf(tmp, "up1tr6%sunexpected discriminator %x message len %d",
	(pr == (DL_DATA \| INDICATION)) ? " " : "(broadcast) ",
	skb->data[0], skb->len);
	l3_debug(st, tmp);
	}
	dev_kfree_skb(skb);
	return;
	}
	if (skb->data[1] != 1) {
	if (st->l3.debug & L3_DEB_PROTERR) {
	sprintf(tmp, "up1tr6 CR len not 1");
	l3_debug(st, tmp);
	}
	dev_kfree_skb(skb);
	return;
	}
	cr = skb->data[2];
	mt = skb->data[3];
	if (skb->data[0] == PROTO_DIS_N0) {
	dev_kfree_skb(skb);
	if (st->l3.debug & L3_DEB_STATE) {
	sprintf(tmp, "up1tr6%s N0 mt %x unhandled",
	(pr == (DL_DATA \| INDICATION)) ? " " : "(broadcast) ", mt);
	l3_debug(st, tmp);
	}
	} else if (skb->data[0] == PROTO_DIS_N1) {
	if (!(proc = getl3proc(st, cr))) {
	if (mt == MT_N1_SETUP) {
	if (cr < 128) {
	if (!(proc = new_l3_process(st, cr))) {
	if (st->l3.debug & L3_DEB_PROTERR) {
	sprintf(tmp, "up1tr6 no roc mem");
	l3_debug(st, tmp);
	}
	dev_kfree_skb(skb);
	return;
	}
	} else {
	dev_kfree_skb(skb);
	return;
	}
	} else if ((mt == MT_N1_REL) \|\| (mt == MT_N1_REL_ACK) \|\|
	(mt == MT_N1_CANC_ACK) \|\| (mt == MT_N1_CANC_REJ) \|\|
	(mt == MT_N1_REG_ACK) \|\| (mt == MT_N1_REG_REJ) \|\|
	(mt == MT_N1_SUSP_ACK) \|\| (mt == MT_N1_RES_REJ) \|\|
	(mt == MT_N1_INFO)) {
	dev_kfree_skb(skb);
	return;
	} else {
	if (!(proc = new_l3_process(st, cr))) {
	if (st->l3.debug & L3_DEB_PROTERR) {
	sprintf(tmp, "up1tr6 no roc mem");
	l3_debug(st, tmp);
	}
	dev_kfree_skb(skb);
	return;
	}
	mt = MT_N1_INVALID;
	}
	}
	for (i = 0; i < DATASTLN1_LEN; i++)
	if ((mt == datastln1[i].primitive) &&
	((1 << proc->state) & datastln1[i].state))
	break;
	if (i == DATASTLN1_LEN) {
	dev_kfree_skb(skb);
	if (st->l3.debug & L3_DEB_STATE) {
	sprintf(tmp, "up1tr6%sstate %d mt %x unhandled",
	(pr == (DL_DATA \| INDICATION)) ? " " : "(broadcast) ",
	proc->state, mt);
	l3_debug(st, tmp);
	}
	return;
	} else {
	if (st->l3.debug & L3_DEB_STATE) {
	sprintf(tmp, "up1tr6%sstate %d mt %x",
	(pr == (DL_DATA \| INDICATION)) ? " " : "(broadcast) ",
	proc->state, mt);
	l3_debug(st, tmp);
	}
	datastln1[i].rout(proc, pr, skb);
	}
	}
	}

	static void
	down1tr6(struct PStack st, int pr, void arg)
	{
	int i, cr;
	struct l3_process *proc;
	struct Channel *chan;
	char tmp[80];

	if ((DL_ESTABLISH \| REQUEST)== pr) {
	l3_msg(st, pr, NULL);
	return;
	} else if ((CC_SETUP \| REQUEST) == pr) {
	chan = arg;
	cr = newcallref();
	cr \|= 0x80;
	if (!(proc = new_l3_process(st, cr))) {
	return;
	} else {
	proc->chan = chan;
	chan->proc = proc;
	memcpy(&proc->para.setup, &chan->setup, sizeof(setup_parm));
	proc->callref = cr;
	}
	} else {
	proc = arg;
	}

	for (i = 0; i < DOWNSTL_LEN; i++)
	if ((pr == downstl[i].primitive) &&
	((1 << proc->state) & downstl[i].state))
	break;
	if (i == DOWNSTL_LEN) {
	if (st->l3.debug & L3_DEB_STATE) {
	sprintf(tmp, "down1tr6 state %d prim %d unhandled",
	proc->state, pr);
	l3_debug(st, tmp);
	}
	} else {
	if (st->l3.debug & L3_DEB_STATE) {
	sprintf(tmp, "down1tr6 state %d prim %d",
	proc->state, pr);
	l3_debug(st, tmp);
	}
	downstl[i].rout(proc, pr, arg);
	}
	}

	static void
	man1tr6(struct PStack st, int pr, void arg)
	{
	int i;
	struct l3_process *proc = arg;

	if (!proc) {
	printk(KERN_ERR "HiSax man1tr6 without proc pr=%04x\n", pr);
	return;
	}
	for (i = 0; i < MANSLLEN; i++)
	if ((pr == manstatelist[i].primitive) &&
	((1 << proc->state) & manstatelist[i].state))
	break;
	if (i == MANSLLEN) {
	if (st->l3.debug & L3_DEB_STATE) {
	l3_debug(st, "cr %d man1tr6 state %d prim %d unhandled",
	proc->callref & 0x7f, proc->state, pr);
	}
	} else {
	if (st->l3.debug & L3_DEB_STATE) {
	l3_debug(st, "cr %d man1tr6 state %d prim %d",
	proc->callref & 0x7f, proc->state, pr);
	}
	manstatelist[i].rout(proc, pr, arg);
	}
	}

	void
	setstack_1tr6(struct PStack *st)
	{
	char tmp[64];

	st->lli.l4l3 = down1tr6;
	st->l2.l2l3 = up1tr6;
	st->l3.l3ml3 = man1tr6;
	st->l3.N303 = 0;

	strcpy(tmp, l3_1tr6_revision);
	printk(KERN_INFO "HiSax: 1TR6 Rev. %s\n", HiSax_getrev(tmp));
	}