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tegrakernel/kernel/kernel-4.9/drivers/isdn/hisax/l3_1tr6.c

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initial commit tegra kernel 32.6.1
2022-02-16 09:13:02 -06:00
/* $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;
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;
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;
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},
};
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));
}