Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 932 insertions, 0 deletions

diff --git a/drivers/isdn/hisax/l3_1tr6.c b/drivers/isdn/hisax/l3_1tr6.c
new file mode 100644
index 000000000..98f60d152
--- /dev/null
+++ b/drivers/isdn/hisax/l3_1tr6.c
@@ -0,0 +1,932 @@
+/* $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);
+static 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, "%s", 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;
+			/* fall through */
+		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;
+	skb_put_data(skb, 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;
+	struct sk_buff *skb = arg;
+
+	/* Channel Identification */
+	p = findie(skb->data, skb->len, WE0_chanID, 0);
+	if (p) {
+		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)) {
+			l3_debug(pc->st, "non-digital call: %s -> %s",
+				pc->para.setup.phone,
+				pc->para.setup.eazmsn);
+		}
+		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];
+	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) {
+			l3_debug(pc->st, "charging info %d",
+				 pc->para.chargeinfo);
+		}
+	} 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];
+
+	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) {
+			l3_debug(pc->st, "charging info %d",
+				 pc->para.chargeinfo);
+		}
+	} 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;
+	skb_put_data(skb, 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;
+	skb_put_data(skb, 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;
+	skb_put_data(skb, 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},
+};
+
+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}
+};
+
+static struct stateentry manstatelist[] =
+{
+	{SBIT(2),
+	 DL_ESTABLISH | INDICATION, l3_1tr6_dl_reset},
+	{ALL_STATES,
+	 DL_RELEASE | INDICATION, l3_1tr6_dl_release},
+};
+
+/* *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;
+
+	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) {
+			l3_debug(st, "up1tr6 len only %d", skb->len);
+		}
+		dev_kfree_skb(skb);
+		return;
+	}
+	if ((skb->data[0] & 0xfe) != PROTO_DIS_N0) {
+		if (st->l3.debug & L3_DEB_PROTERR) {
+			l3_debug(st, "up1tr6%sunexpected discriminator %x message len %d",
+				(pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
+				skb->data[0], skb->len);
+		}
+		dev_kfree_skb(skb);
+		return;
+	}
+	if (skb->data[1] != 1) {
+		if (st->l3.debug & L3_DEB_PROTERR) {
+			l3_debug(st, "up1tr6 CR len not 1");
+		}
+		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) {
+			l3_debug(st, "up1tr6%s N0 mt %x unhandled",
+				(pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ", mt);
+		}
+	} 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) {
+							l3_debug(st, "up1tr6 no roc mem");
+						}
+						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) {
+						l3_debug(st, "up1tr6 no roc mem");
+					}
+					dev_kfree_skb(skb);
+					return;
+				}
+				mt = MT_N1_INVALID;
+			}
+		}
+		for (i = 0; i < ARRAY_SIZE(datastln1); i++)
+			if ((mt == datastln1[i].primitive) &&
+			    ((1 << proc->state) & datastln1[i].state))
+				break;
+		if (i == ARRAY_SIZE(datastln1)) {
+			dev_kfree_skb(skb);
+			if (st->l3.debug & L3_DEB_STATE) {
+				l3_debug(st, "up1tr6%sstate %d mt %x unhandled",
+					(pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
+					proc->state, mt);
+			}
+			return;
+		} else {
+			if (st->l3.debug & L3_DEB_STATE) {
+				l3_debug(st, "up1tr6%sstate %d mt %x",
+					(pr == (DL_DATA | INDICATION)) ? " " : "(broadcast) ",
+					proc->state, mt);
+			}
+			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;
+
+	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 < ARRAY_SIZE(downstl); i++)
+		if ((pr == downstl[i].primitive) &&
+		    ((1 << proc->state) & downstl[i].state))
+			break;
+	if (i == ARRAY_SIZE(downstl)) {
+		if (st->l3.debug & L3_DEB_STATE) {
+			l3_debug(st, "down1tr6 state %d prim %d unhandled",
+				proc->state, pr);
+		}
+	} else {
+		if (st->l3.debug & L3_DEB_STATE) {
+			l3_debug(st, "down1tr6 state %d prim %d",
+				proc->state, pr);
+		}
+		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 < 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 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));
+}