patch-2.0.31 linux/drivers/isdn/hisax/isdnl3.c

• Lines: 202
• Date: Mon Aug 4 17:34:00 1997
• Orig file: v2.0.30/linux/drivers/isdn/hisax/isdnl3.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.0.30/linux/drivers/isdn/hisax/isdnl3.c linux/drivers/isdn/hisax/isdnl3.c
@@ -0,0 +1,201 @@
+/* $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);
+	}
+	SET_SKB_FREE(skb);
+	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)
+		dev_kfree_skb(skb, FREE_READ);
+}
+
+#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);
+}