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/* $Id: isdnl3.c,v 1.10 1997/04/06 22:54:16 keil Exp $
* Author Karsten Keil (keil@temic-ech.spacenet.de)
* based on the teles driver from Jan den Ouden
*
* Thanks to Jan den Ouden
* Fritz Elfert
*
* $Log: isdnl3.c,v $
* Revision 1.10 1997/04/06 22:54:16 keil
* Using SKB's
*
* Revision 1.9 1997/03/25 23:11:25 keil
* US NI-1 protocol
*
* Revision 1.8 1997/03/21 18:53:44 keil
* Report no protocol error to syslog too
*
* Revision 1.7 1997/03/17 18:34:38 keil
* fixed oops if no protocol selected during config
*
* Revision 1.6 1997/02/16 01:04:08 fritz
* Bugfix: Changed timer handling caused hang with 2.1.X
*
* Revision 1.5 1997/02/09 00:26:27 keil
* new interface handling, one interface per card
* leased line changes
*
* Revision 1.4 1997/01/27 23:17:44 keil
* delete timers while unloading
*
* Revision 1.3 1997/01/21 22:31:12 keil
* new statemachine; L3 timers
*
* Revision 1.2 1996/11/05 19:42:04 keil
* using config.h
*
* Revision 1.1 1996/10/13 20:04:54 keil
* Initial revision
*
*
*
*/
#define __NO_VERSION__
#include "hisax.h"
#include "isdnl3.h"
#include <linux/config.h>
const char *l3_revision = "$Revision: 1.10 $";
void
l3_debug(struct PStack *st, char *s)
{
char str[256], tm[32];
jiftime(tm, jiffies);
sprintf(str, "%s Channel %d l3 %s\n", tm, st->l3.channr, s);
HiSax_putstatus(st->l1.hardware, str);
}
void
newl3state(struct PStack *st, int state)
{
char tmp[80];
if (st->l3.debug & L3_DEB_STATE) {
sprintf(tmp, "newstate %d --> %d", st->l3.state, state);
l3_debug(st, tmp);
}
st->l3.state = state;
}
static void
L3ExpireTimer(struct L3Timer *t)
{
t->st->l4.l4l3(t->st, t->event, NULL);
}
void
L3InitTimer(struct PStack *st, struct L3Timer *t)
{
t->st = st;
t->tl.function = (void *) L3ExpireTimer;
t->tl.data = (long) t;
init_timer(&t->tl);
}
void
L3DelTimer(struct L3Timer *t)
{
del_timer(&t->tl);
}
int
L3AddTimer(struct L3Timer *t,
int millisec, int event)
{
if (t->tl.next || t->tl.prev) {
printk(KERN_WARNING "L3AddTimer: timer already active!\n");
return -1;
}
init_timer(&t->tl);
t->event = event;
t->tl.expires = jiffies + (millisec * HZ) / 1000;
add_timer(&t->tl);
return 0;
}
void
StopAllL3Timer(struct PStack *st)
{
L3DelTimer(&st->l3.timer);
}
struct sk_buff *
l3_alloc_skb(int len)
{
struct sk_buff *skb;
if (!(skb = alloc_skb(len + MAX_HEADER_LEN, GFP_ATOMIC))) {
printk(KERN_WARNING "HiSax: No skb for D-channel\n");
return (NULL);
}
skb_reserve(skb, MAX_HEADER_LEN);
return (skb);
}
static void
no_l3_proto(struct PStack *st, int pr, void *arg)
{
struct sk_buff *skb = arg;
l3_debug(st, "no protocol");
if (skb) {
SET_SKB_FREE(skb);
dev_kfree_skb(skb);
}
}
#ifdef CONFIG_HISAX_EURO
extern void setstack_dss1(struct PStack *st);
#endif
#ifdef CONFIG_HISAX_NI1
extern void setstack_ni1(struct PStack *st);
#endif
#ifdef CONFIG_HISAX_1TR6
extern void setstack_1tr6(struct PStack *st);
#endif
void
setstack_isdnl3(struct PStack *st, struct Channel *chanp)
{
char tmp[64];
st->l3.debug = L3_DEB_WARN;
st->l3.channr = chanp->chan;
L3InitTimer(st, &st->l3.timer);
#ifdef CONFIG_HISAX_EURO
if (st->protocol == ISDN_PTYPE_EURO) {
setstack_dss1(st);
} else
#endif
#ifdef CONFIG_HISAX_NI1
if (st->protocol == ISDN_PTYPE_NI1) {
setstack_ni1(st);
} else
#endif
#ifdef CONFIG_HISAX_1TR6
if (st->protocol == ISDN_PTYPE_1TR6) {
setstack_1tr6(st);
} else
#endif
if (st->protocol == ISDN_PTYPE_LEASED) {
st->l4.l4l3 = no_l3_proto;
st->l2.l2l3 = no_l3_proto;
printk(KERN_NOTICE "HiSax: Leased line mode\n");
} else {
st->l4.l4l3 = no_l3_proto;
st->l2.l2l3 = no_l3_proto;
sprintf(tmp, "protocol %s not supported",
(st->protocol == ISDN_PTYPE_1TR6) ? "1tr6" :
(st->protocol == ISDN_PTYPE_EURO) ? "euro" :
(st->protocol == ISDN_PTYPE_NI1) ? "ni1" :
"unknown");
printk(KERN_WARNING "HiSax: %s\n", tmp);
l3_debug(st, tmp);
st->protocol = -1;
}
st->l3.state = 0;
st->l3.callref = 0;
}
void
releasestack_isdnl3(struct PStack *st)
{
StopAllL3Timer(st);
}
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