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linux/drivers/isdn/hisax/l3_1tr6.c
Julia Lawall 4101e976e0 drivers/isdn: delete double assignment 
Delete successive assignments to the same location.  In the first case, the
hscx array has two elements, so change the assignment to initialize the
second one.  In the second case, the two assignments are simply identical.
Furthermore, neither is necessary, because the effect of the assignment is
only visible in the next line, in the assignment in the if test.  The patch
inlines the right hand side value in the latter assignment and pulls that
assignment out of the if test.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression i;
@@

*i = ...;
 i = ...;
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-27 12:23:21 -07:00

946 lines
22 KiB
C
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/* $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, 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;
/* 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)) {
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},
};
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;
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 < 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) {
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 < 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) {
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 < 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));
}
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