Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 849 insertions, 0 deletions

diff --git a/kernel/drivers/isdn/divert/isdn_divert.c b/kernel/drivers/isdn/divert/isdn_divert.c
new file mode 100644
index 000000000..50749a70c
--- /dev/null
+++ b/kernel/drivers/isdn/divert/isdn_divert.c
@@ -0,0 +1,849 @@
+/* $Id: isdn_divert.c,v 1.6.6.3 2001/09/23 22:24:36 kai Exp $
+ *
+ * DSS1 main diversion supplementary handling for i4l.
+ *
+ * Copyright 1999       by Werner Cornelius (werner@isdn4linux.de)
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/proc_fs.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+#include <linux/jiffies.h>
+
+#include "isdn_divert.h"
+
+/**********************************/
+/* structure keeping calling info */
+/**********************************/
+struct call_struc {
+	isdn_ctrl ics; /* delivered setup + driver parameters */
+	ulong divert_id; /* Id delivered to user */
+	unsigned char akt_state; /* actual state */
+	char deflect_dest[35]; /* deflection destination */
+	struct timer_list timer; /* timer control structure */
+	char info[90]; /* device info output */
+	struct call_struc *next; /* pointer to next entry */
+	struct call_struc *prev;
+};
+
+
+/********************************************/
+/* structure keeping deflection table entry */
+/********************************************/
+struct deflect_struc {
+	struct deflect_struc *next, *prev;
+	divert_rule rule; /* used rule */
+};
+
+
+/*****************************************/
+/* variables for main diversion services */
+/*****************************************/
+/* diversion/deflection processes */
+static struct call_struc *divert_head = NULL; /* head of remembered entrys */
+static ulong next_id = 1; /* next info id */
+static struct deflect_struc *table_head = NULL;
+static struct deflect_struc *table_tail = NULL;
+static unsigned char extern_wait_max = 4; /* maximum wait in s for external process */
+
+DEFINE_SPINLOCK(divert_lock);
+
+/***************************/
+/* timer callback function */
+/***************************/
+static void deflect_timer_expire(ulong arg)
+{
+	unsigned long flags;
+	struct call_struc *cs = (struct call_struc *) arg;
+
+	spin_lock_irqsave(&divert_lock, flags);
+	del_timer(&cs->timer); /* delete active timer */
+	spin_unlock_irqrestore(&divert_lock, flags);
+
+	switch (cs->akt_state) {
+	case DEFLECT_PROCEED:
+		cs->ics.command = ISDN_CMD_HANGUP; /* cancel action */
+		divert_if.ll_cmd(&cs->ics);
+		spin_lock_irqsave(&divert_lock, flags);
+		cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+		cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+		add_timer(&cs->timer);
+		spin_unlock_irqrestore(&divert_lock, flags);
+		break;
+
+	case DEFLECT_ALERT:
+		cs->ics.command = ISDN_CMD_REDIR; /* protocol */
+		strlcpy(cs->ics.parm.setup.phone, cs->deflect_dest, sizeof(cs->ics.parm.setup.phone));
+		strcpy(cs->ics.parm.setup.eazmsn, "Testtext delayed");
+		divert_if.ll_cmd(&cs->ics);
+		spin_lock_irqsave(&divert_lock, flags);
+		cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+		cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+		add_timer(&cs->timer);
+		spin_unlock_irqrestore(&divert_lock, flags);
+		break;
+
+	case DEFLECT_AUTODEL:
+	default:
+		spin_lock_irqsave(&divert_lock, flags);
+		if (cs->prev)
+			cs->prev->next = cs->next; /* forward link */
+		else
+			divert_head = cs->next;
+		if (cs->next)
+			cs->next->prev = cs->prev; /* back link */
+		spin_unlock_irqrestore(&divert_lock, flags);
+		kfree(cs);
+		return;
+
+	} /* switch */
+} /* deflect_timer_func */
+
+
+/*****************************************/
+/* handle call forwarding de/activations */
+/* 0 = deact, 1 = act, 2 = interrogate   */
+/*****************************************/
+int cf_command(int drvid, int mode,
+	       u_char proc, char *msn,
+	       u_char service, char *fwd_nr, ulong *procid)
+{
+	unsigned long flags;
+	int retval, msnlen;
+	int fwd_len;
+	char *p, *ielenp, tmp[60];
+	struct call_struc *cs;
+
+	if (strchr(msn, '.')) return (-EINVAL); /* subaddress not allowed in msn */
+	if ((proc & 0x7F) > 2) return (-EINVAL);
+	proc &= 3;
+	p = tmp;
+	*p++ = 0x30; /* enumeration */
+	ielenp = p++; /* remember total length position */
+	*p++ = 0xa; /* proc tag */
+	*p++ = 1;   /* length */
+	*p++ = proc & 0x7F; /* procedure to de/activate/interrogate */
+	*p++ = 0xa; /* service tag */
+	*p++ = 1;   /* length */
+	*p++ = service; /* service to handle */
+
+	if (mode == 1) {
+		if (!*fwd_nr) return (-EINVAL); /* destination missing */
+		if (strchr(fwd_nr, '.')) return (-EINVAL); /* subaddress not allowed */
+		fwd_len = strlen(fwd_nr);
+		*p++ = 0x30; /* number enumeration */
+		*p++ = fwd_len + 2; /* complete forward to len */
+		*p++ = 0x80; /* fwd to nr */
+		*p++ = fwd_len; /* length of number */
+		strcpy(p, fwd_nr); /* copy number */
+		p += fwd_len; /* pointer beyond fwd */
+	} /* activate */
+
+	msnlen = strlen(msn);
+	*p++ = 0x80; /* msn number */
+	if (msnlen > 1) {
+		*p++ = msnlen; /* length */
+		strcpy(p, msn);
+		p += msnlen;
+	} else
+		*p++ = 0;
+
+	*ielenp = p - ielenp - 1; /* set total IE length */
+
+	/* allocate mem for information struct */
+	if (!(cs = kmalloc(sizeof(struct call_struc), GFP_ATOMIC)))
+		return (-ENOMEM); /* no memory */
+	init_timer(&cs->timer);
+	cs->info[0] = '\0';
+	cs->timer.function = deflect_timer_expire;
+	cs->timer.data = (ulong) cs; /* pointer to own structure */
+	cs->ics.driver = drvid;
+	cs->ics.command = ISDN_CMD_PROT_IO; /* protocol specific io */
+	cs->ics.arg = DSS1_CMD_INVOKE; /* invoke supplementary service */
+	cs->ics.parm.dss1_io.proc = (mode == 1) ? 7 : (mode == 2) ? 11 : 8; /* operation */
+	cs->ics.parm.dss1_io.timeout = 4000; /* from ETS 300 207-1 */
+	cs->ics.parm.dss1_io.datalen = p - tmp; /* total len */
+	cs->ics.parm.dss1_io.data = tmp; /* start of buffer */
+
+	spin_lock_irqsave(&divert_lock, flags);
+	cs->ics.parm.dss1_io.ll_id = next_id++; /* id for callback */
+	spin_unlock_irqrestore(&divert_lock, flags);
+	*procid = cs->ics.parm.dss1_io.ll_id;
+
+	sprintf(cs->info, "%d 0x%lx %s%s 0 %s %02x %d%s%s\n",
+		(!mode) ? DIVERT_DEACTIVATE : (mode == 1) ? DIVERT_ACTIVATE : DIVERT_REPORT,
+		cs->ics.parm.dss1_io.ll_id,
+		(mode != 2) ? "" : "0 ",
+		divert_if.drv_to_name(cs->ics.driver),
+		msn,
+		service & 0xFF,
+		proc,
+		(mode != 1) ? "" : " 0 ",
+		(mode != 1) ? "" : fwd_nr);
+
+	retval = divert_if.ll_cmd(&cs->ics); /* execute command */
+
+	if (!retval) {
+		cs->prev = NULL;
+		spin_lock_irqsave(&divert_lock, flags);
+		cs->next = divert_head;
+		divert_head = cs;
+		spin_unlock_irqrestore(&divert_lock, flags);
+	} else
+		kfree(cs);
+	return (retval);
+} /* cf_command */
+
+
+/****************************************/
+/* handle a external deflection command */
+/****************************************/
+int deflect_extern_action(u_char cmd, ulong callid, char *to_nr)
+{
+	struct call_struc *cs;
+	isdn_ctrl ic;
+	unsigned long flags;
+	int i;
+
+	if ((cmd & 0x7F) > 2) return (-EINVAL); /* invalid command */
+	cs = divert_head; /* start of parameter list */
+	while (cs) {
+		if (cs->divert_id == callid) break; /* found */
+		cs = cs->next;
+	} /* search entry */
+	if (!cs) return (-EINVAL); /* invalid callid */
+
+	ic.driver = cs->ics.driver;
+	ic.arg = cs->ics.arg;
+	i = -EINVAL;
+	if (cs->akt_state == DEFLECT_AUTODEL) return (i); /* no valid call */
+	switch (cmd & 0x7F) {
+	case 0: /* hangup */
+		del_timer(&cs->timer);
+		ic.command = ISDN_CMD_HANGUP;
+		i = divert_if.ll_cmd(&ic);
+		spin_lock_irqsave(&divert_lock, flags);
+		cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+		cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+		add_timer(&cs->timer);
+		spin_unlock_irqrestore(&divert_lock, flags);
+		break;
+
+	case 1: /* alert */
+		if (cs->akt_state == DEFLECT_ALERT) return (0);
+		cmd &= 0x7F; /* never wait */
+		del_timer(&cs->timer);
+		ic.command = ISDN_CMD_ALERT;
+		if ((i = divert_if.ll_cmd(&ic))) {
+			spin_lock_irqsave(&divert_lock, flags);
+			cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+			cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+			add_timer(&cs->timer);
+			spin_unlock_irqrestore(&divert_lock, flags);
+		} else
+			cs->akt_state = DEFLECT_ALERT;
+		break;
+
+	case 2: /* redir */
+		del_timer(&cs->timer);
+		strlcpy(cs->ics.parm.setup.phone, to_nr, sizeof(cs->ics.parm.setup.phone));
+		strcpy(cs->ics.parm.setup.eazmsn, "Testtext manual");
+		ic.command = ISDN_CMD_REDIR;
+		if ((i = divert_if.ll_cmd(&ic))) {
+			spin_lock_irqsave(&divert_lock, flags);
+			cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+			cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+			add_timer(&cs->timer);
+			spin_unlock_irqrestore(&divert_lock, flags);
+		} else
+			cs->akt_state = DEFLECT_ALERT;
+		break;
+
+	} /* switch */
+	return (i);
+} /* deflect_extern_action */
+
+/********************************/
+/* insert a new rule before idx */
+/********************************/
+int insertrule(int idx, divert_rule *newrule)
+{
+	struct deflect_struc *ds, *ds1 = NULL;
+	unsigned long flags;
+
+	if (!(ds = kmalloc(sizeof(struct deflect_struc), GFP_KERNEL)))
+		return (-ENOMEM); /* no memory */
+
+	ds->rule = *newrule; /* set rule */
+
+	spin_lock_irqsave(&divert_lock, flags);
+
+	if (idx >= 0) {
+		ds1 = table_head;
+		while ((ds1) && (idx > 0))
+		{ idx--;
+			ds1 = ds1->next;
+		}
+		if (!ds1) idx = -1;
+	}
+
+	if (idx < 0) {
+		ds->prev = table_tail; /* previous entry */
+		ds->next = NULL; /* end of chain */
+		if (ds->prev)
+			ds->prev->next = ds; /* last forward */
+		else
+			table_head = ds; /* is first entry */
+		table_tail = ds; /* end of queue */
+	} else {
+		ds->next = ds1; /* next entry */
+		ds->prev = ds1->prev; /* prev entry */
+		ds1->prev = ds; /* backward chain old element */
+		if (!ds->prev)
+			table_head = ds; /* first element */
+	}
+
+	spin_unlock_irqrestore(&divert_lock, flags);
+	return (0);
+} /* insertrule */
+
+/***********************************/
+/* delete the rule at position idx */
+/***********************************/
+int deleterule(int idx)
+{
+	struct deflect_struc *ds, *ds1;
+	unsigned long flags;
+
+	if (idx < 0) {
+		spin_lock_irqsave(&divert_lock, flags);
+		ds = table_head;
+		table_head = NULL;
+		table_tail = NULL;
+		spin_unlock_irqrestore(&divert_lock, flags);
+		while (ds) {
+			ds1 = ds;
+			ds = ds->next;
+			kfree(ds1);
+		}
+		return (0);
+	}
+
+	spin_lock_irqsave(&divert_lock, flags);
+	ds = table_head;
+
+	while ((ds) && (idx > 0)) {
+		idx--;
+		ds = ds->next;
+	}
+
+	if (!ds) {
+		spin_unlock_irqrestore(&divert_lock, flags);
+		return (-EINVAL);
+	}
+
+	if (ds->next)
+		ds->next->prev = ds->prev; /* backward chain */
+	else
+		table_tail = ds->prev; /* end of chain */
+
+	if (ds->prev)
+		ds->prev->next = ds->next; /* forward chain */
+	else
+		table_head = ds->next; /* start of chain */
+
+	spin_unlock_irqrestore(&divert_lock, flags);
+	kfree(ds);
+	return (0);
+} /* deleterule */
+
+/*******************************************/
+/* get a pointer to a specific rule number */
+/*******************************************/
+divert_rule *getruleptr(int idx)
+{
+	struct deflect_struc *ds = table_head;
+
+	if (idx < 0) return (NULL);
+	while ((ds) && (idx >= 0)) {
+		if (!(idx--)) {
+			return (&ds->rule);
+			break;
+		}
+		ds = ds->next;
+	}
+	return (NULL);
+} /* getruleptr */
+
+/*************************************************/
+/* called from common module on an incoming call */
+/*************************************************/
+static int isdn_divert_icall(isdn_ctrl *ic)
+{
+	int retval = 0;
+	unsigned long flags;
+	struct call_struc *cs = NULL;
+	struct deflect_struc *dv;
+	char *p, *p1;
+	u_char accept;
+
+	/* first check the internal deflection table */
+	for (dv = table_head; dv; dv = dv->next) {
+		/* scan table */
+		if (((dv->rule.callopt == 1) && (ic->command == ISDN_STAT_ICALLW)) ||
+		    ((dv->rule.callopt == 2) && (ic->command == ISDN_STAT_ICALL)))
+			continue; /* call option check */
+		if (!(dv->rule.drvid & (1L << ic->driver)))
+			continue; /* driver not matching */
+		if ((dv->rule.si1) && (dv->rule.si1 != ic->parm.setup.si1))
+			continue; /* si1 not matching */
+		if ((dv->rule.si2) && (dv->rule.si2 != ic->parm.setup.si2))
+			continue; /* si2 not matching */
+
+		p = dv->rule.my_msn;
+		p1 = ic->parm.setup.eazmsn;
+		accept = 0;
+		while (*p) {
+			/* complete compare */
+			if (*p == '-') {
+				accept = 1; /* call accepted */
+				break;
+			}
+			if (*p++ != *p1++)
+				break; /* not accepted */
+			if ((!*p) && (!*p1))
+				accept = 1;
+		} /* complete compare */
+		if (!accept) continue; /* not accepted */
+
+		if ((strcmp(dv->rule.caller, "0")) ||
+		    (ic->parm.setup.phone[0])) {
+			p = dv->rule.caller;
+			p1 = ic->parm.setup.phone;
+			accept = 0;
+			while (*p) {
+				/* complete compare */
+				if (*p == '-') {
+					accept = 1; /* call accepted */
+					break;
+				}
+				if (*p++ != *p1++)
+					break; /* not accepted */
+				if ((!*p) && (!*p1))
+					accept = 1;
+			} /* complete compare */
+			if (!accept) continue; /* not accepted */
+		}
+
+		switch (dv->rule.action) {
+		case DEFLECT_IGNORE:
+			return 0;
+
+		case DEFLECT_ALERT:
+		case DEFLECT_PROCEED:
+		case DEFLECT_REPORT:
+		case DEFLECT_REJECT:
+			if (dv->rule.action == DEFLECT_PROCEED)
+				if ((!if_used) || ((!extern_wait_max) && (!dv->rule.waittime)))
+					return (0); /* no external deflection needed */
+			if (!(cs = kmalloc(sizeof(struct call_struc), GFP_ATOMIC)))
+				return (0); /* no memory */
+			init_timer(&cs->timer);
+			cs->info[0] = '\0';
+			cs->timer.function = deflect_timer_expire;
+			cs->timer.data = (ulong) cs; /* pointer to own structure */
+
+			cs->ics = *ic; /* copy incoming data */
+			if (!cs->ics.parm.setup.phone[0]) strcpy(cs->ics.parm.setup.phone, "0");
+			if (!cs->ics.parm.setup.eazmsn[0]) strcpy(cs->ics.parm.setup.eazmsn, "0");
+			cs->ics.parm.setup.screen = dv->rule.screen;
+			if (dv->rule.waittime)
+				cs->timer.expires = jiffies + (HZ * dv->rule.waittime);
+			else if (dv->rule.action == DEFLECT_PROCEED)
+				cs->timer.expires = jiffies + (HZ * extern_wait_max);
+			else
+				cs->timer.expires = 0;
+			cs->akt_state = dv->rule.action;
+			spin_lock_irqsave(&divert_lock, flags);
+			cs->divert_id = next_id++; /* new sequence number */
+			spin_unlock_irqrestore(&divert_lock, flags);
+			cs->prev = NULL;
+			if (cs->akt_state == DEFLECT_ALERT) {
+				strcpy(cs->deflect_dest, dv->rule.to_nr);
+				if (!cs->timer.expires) {
+					strcpy(ic->parm.setup.eazmsn,
+					       "Testtext direct");
+					ic->parm.setup.screen = dv->rule.screen;
+					strlcpy(ic->parm.setup.phone, dv->rule.to_nr, sizeof(ic->parm.setup.phone));
+					cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+					cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+					retval = 5;
+				} else
+					retval = 1; /* alerting */
+			} else {
+				cs->deflect_dest[0] = '\0';
+				retval = 4; /* only proceed */
+			}
+			sprintf(cs->info, "%d 0x%lx %s %s %s %s 0x%x 0x%x %d %d %s\n",
+				cs->akt_state,
+				cs->divert_id,
+				divert_if.drv_to_name(cs->ics.driver),
+				(ic->command == ISDN_STAT_ICALLW) ? "1" : "0",
+				cs->ics.parm.setup.phone,
+				cs->ics.parm.setup.eazmsn,
+				cs->ics.parm.setup.si1,
+				cs->ics.parm.setup.si2,
+				cs->ics.parm.setup.screen,
+				dv->rule.waittime,
+				cs->deflect_dest);
+			if ((dv->rule.action == DEFLECT_REPORT) ||
+			    (dv->rule.action == DEFLECT_REJECT)) {
+				put_info_buffer(cs->info);
+				kfree(cs); /* remove */
+				return ((dv->rule.action == DEFLECT_REPORT) ? 0 : 2); /* nothing to do */
+			}
+			break;
+
+		default:
+			return 0; /* ignore call */
+		} /* switch action */
+		break; /* will break the 'for' looping */
+	} /* scan_table */
+
+	if (cs) {
+		cs->prev = NULL;
+		spin_lock_irqsave(&divert_lock, flags);
+		cs->next = divert_head;
+		divert_head = cs;
+		if (cs->timer.expires) add_timer(&cs->timer);
+		spin_unlock_irqrestore(&divert_lock, flags);
+
+		put_info_buffer(cs->info);
+		return (retval);
+	} else
+		return (0);
+} /* isdn_divert_icall */
+
+
+void deleteprocs(void)
+{
+	struct call_struc *cs, *cs1;
+	unsigned long flags;
+
+	spin_lock_irqsave(&divert_lock, flags);
+	cs = divert_head;
+	divert_head = NULL;
+	while (cs) {
+		del_timer(&cs->timer);
+		cs1 = cs;
+		cs = cs->next;
+		kfree(cs1);
+	}
+	spin_unlock_irqrestore(&divert_lock, flags);
+} /* deleteprocs */
+
+/****************************************************/
+/* put a address including address type into buffer */
+/****************************************************/
+static int put_address(char *st, u_char *p, int len)
+{
+	u_char retval = 0;
+	u_char adr_typ = 0; /* network standard */
+
+	if (len < 2) return (retval);
+	if (*p == 0xA1) {
+		retval = *(++p) + 2; /* total length */
+		if (retval > len) return (0); /* too short */
+		len = retval - 2; /* remaining length */
+		if (len < 3) return (0);
+		if ((*(++p) != 0x0A) || (*(++p) != 1)) return (0);
+		adr_typ = *(++p);
+		len -= 3;
+		p++;
+		if (len < 2) return (0);
+		if (*p++ != 0x12) return (0);
+		if (*p > len) return (0); /* check number length */
+		len = *p++;
+	} else if (*p == 0x80) {
+		retval = *(++p) + 2; /* total length */
+		if (retval > len) return (0);
+		len = retval - 2;
+		p++;
+	} else
+		return (0); /* invalid address information */
+
+	sprintf(st, "%d ", adr_typ);
+	st += strlen(st);
+	if (!len)
+		*st++ = '-';
+	else
+		while (len--)
+			*st++ = *p++;
+	*st = '\0';
+	return (retval);
+} /* put_address */
+
+/*************************************/
+/* report a successful interrogation */
+/*************************************/
+static int interrogate_success(isdn_ctrl *ic, struct call_struc *cs)
+{
+	char *src = ic->parm.dss1_io.data;
+	int restlen = ic->parm.dss1_io.datalen;
+	int cnt = 1;
+	u_char n, n1;
+	char st[90], *p, *stp;
+
+	if (restlen < 2) return (-100); /* frame too short */
+	if (*src++ != 0x30) return (-101);
+	if ((n = *src++) > 0x81) return (-102); /* invalid length field */
+	restlen -= 2; /* remaining bytes */
+	if (n == 0x80) {
+		if (restlen < 2) return (-103);
+		if ((*(src + restlen - 1)) || (*(src + restlen - 2))) return (-104);
+		restlen -= 2;
+	} else if (n == 0x81) {
+		n = *src++;
+		restlen--;
+		if (n > restlen) return (-105);
+		restlen = n;
+	} else if (n > restlen)
+		return (-106);
+	else
+		restlen = n; /* standard format */
+	if (restlen < 3) return (-107); /* no procedure */
+	if ((*src++ != 2) || (*src++ != 1) || (*src++ != 0x0B)) return (-108);
+	restlen -= 3;
+	if (restlen < 2) return (-109); /* list missing */
+	if (*src == 0x31) {
+		src++;
+		if ((n = *src++) > 0x81) return (-110); /* invalid length field */
+		restlen -= 2; /* remaining bytes */
+		if (n == 0x80) {
+			if (restlen < 2) return (-111);
+			if ((*(src + restlen - 1)) || (*(src + restlen - 2))) return (-112);
+			restlen -= 2;
+		} else if (n == 0x81) {
+			n = *src++;
+			restlen--;
+			if (n > restlen) return (-113);
+			restlen = n;
+		} else if (n > restlen)
+			return (-114);
+		else
+			restlen = n; /* standard format */
+	} /* result list header */
+
+	while (restlen >= 2) {
+		stp = st;
+		sprintf(stp, "%d 0x%lx %d %s ", DIVERT_REPORT, ic->parm.dss1_io.ll_id,
+			cnt++, divert_if.drv_to_name(ic->driver));
+		stp += strlen(stp);
+		if (*src++ != 0x30) return (-115); /* invalid enum */
+		n = *src++;
+		restlen -= 2;
+		if (n > restlen) return (-116); /* enum length wrong */
+		restlen -= n;
+		p = src; /* one entry */
+		src += n;
+		if (!(n1 = put_address(stp, p, n & 0xFF))) continue;
+		stp += strlen(stp);
+		p += n1;
+		n -= n1;
+		if (n < 6) continue; /* no service and proc */
+		if ((*p++ != 0x0A) || (*p++ != 1)) continue;
+		sprintf(stp, " 0x%02x ", (*p++) & 0xFF);
+		stp += strlen(stp);
+		if ((*p++ != 0x0A) || (*p++ != 1)) continue;
+		sprintf(stp, "%d ", (*p++) & 0xFF);
+		stp += strlen(stp);
+		n -= 6;
+		if (n > 2) {
+			if (*p++ != 0x30) continue;
+			if (*p > (n - 2)) continue;
+			n = *p++;
+			if (!(n1 = put_address(stp, p, n & 0xFF))) continue;
+			stp += strlen(stp);
+		}
+		sprintf(stp, "\n");
+		put_info_buffer(st);
+	} /* while restlen */
+	if (restlen) return (-117);
+	return (0);
+} /* interrogate_success */
+
+/*********************************************/
+/* callback for protocol specific extensions */
+/*********************************************/
+static int prot_stat_callback(isdn_ctrl *ic)
+{
+	struct call_struc *cs, *cs1;
+	int i;
+	unsigned long flags;
+
+	cs = divert_head; /* start of list */
+	cs1 = NULL;
+	while (cs) {
+		if (ic->driver == cs->ics.driver) {
+			switch (cs->ics.arg) {
+			case DSS1_CMD_INVOKE:
+				if ((cs->ics.parm.dss1_io.ll_id == ic->parm.dss1_io.ll_id) &&
+				    (cs->ics.parm.dss1_io.hl_id == ic->parm.dss1_io.hl_id)) {
+					switch (ic->arg) {
+					case DSS1_STAT_INVOKE_ERR:
+						sprintf(cs->info, "128 0x%lx 0x%x\n",
+							ic->parm.dss1_io.ll_id,
+							ic->parm.dss1_io.timeout);
+						put_info_buffer(cs->info);
+						break;
+
+					case DSS1_STAT_INVOKE_RES:
+						switch (cs->ics.parm.dss1_io.proc) {
+						case  7:
+						case  8:
+							put_info_buffer(cs->info);
+							break;
+
+						case  11:
+							i = interrogate_success(ic, cs);
+							if (i)
+								sprintf(cs->info, "%d 0x%lx %d\n", DIVERT_REPORT,
+									ic->parm.dss1_io.ll_id, i);
+							put_info_buffer(cs->info);
+							break;
+
+						default:
+							printk(KERN_WARNING "dss1_divert: unknown proc %d\n", cs->ics.parm.dss1_io.proc);
+							break;
+						}
+
+						break;
+
+					default:
+						printk(KERN_WARNING "dss1_divert unknown invoke answer %lx\n", ic->arg);
+						break;
+					}
+					cs1 = cs; /* remember structure */
+					cs = NULL;
+					continue; /* abort search */
+				} /* id found */
+				break;
+
+			case DSS1_CMD_INVOKE_ABORT:
+				printk(KERN_WARNING "dss1_divert unhandled invoke abort\n");
+				break;
+
+			default:
+				printk(KERN_WARNING "dss1_divert unknown cmd 0x%lx\n", cs->ics.arg);
+				break;
+			} /* switch ics.arg */
+			cs = cs->next;
+		} /* driver ok */
+	}
+
+	if (!cs1) {
+		printk(KERN_WARNING "dss1_divert unhandled process\n");
+		return (0);
+	}
+
+	if (cs1->ics.driver == -1) {
+		spin_lock_irqsave(&divert_lock, flags);
+		del_timer(&cs1->timer);
+		if (cs1->prev)
+			cs1->prev->next = cs1->next; /* forward link */
+		else
+			divert_head = cs1->next;
+		if (cs1->next)
+			cs1->next->prev = cs1->prev; /* back link */
+		spin_unlock_irqrestore(&divert_lock, flags);
+		kfree(cs1);
+	}
+
+	return (0);
+} /* prot_stat_callback */
+
+
+/***************************/
+/* status callback from HL */
+/***************************/
+static int isdn_divert_stat_callback(isdn_ctrl *ic)
+{
+	struct call_struc *cs, *cs1;
+	unsigned long flags;
+	int retval;
+
+	retval = -1;
+	cs = divert_head; /* start of list */
+	while (cs) {
+		if ((ic->driver == cs->ics.driver) &&
+		    (ic->arg == cs->ics.arg)) {
+			switch (ic->command) {
+			case ISDN_STAT_DHUP:
+				sprintf(cs->info, "129 0x%lx\n", cs->divert_id);
+				del_timer(&cs->timer);
+				cs->ics.driver = -1;
+				break;
+
+			case ISDN_STAT_CAUSE:
+				sprintf(cs->info, "130 0x%lx %s\n", cs->divert_id, ic->parm.num);
+				break;
+
+			case ISDN_STAT_REDIR:
+				sprintf(cs->info, "131 0x%lx\n", cs->divert_id);
+				del_timer(&cs->timer);
+				cs->ics.driver = -1;
+				break;
+
+			default:
+				sprintf(cs->info, "999 0x%lx 0x%x\n", cs->divert_id, (int)(ic->command));
+				break;
+			}
+			put_info_buffer(cs->info);
+			retval = 0;
+		}
+		cs1 = cs;
+		cs = cs->next;
+		if (cs1->ics.driver == -1) {
+			spin_lock_irqsave(&divert_lock, flags);
+			if (cs1->prev)
+				cs1->prev->next = cs1->next; /* forward link */
+			else
+				divert_head = cs1->next;
+			if (cs1->next)
+				cs1->next->prev = cs1->prev; /* back link */
+			spin_unlock_irqrestore(&divert_lock, flags);
+			kfree(cs1);
+		}
+	}
+	return (retval); /* not found */
+} /* isdn_divert_stat_callback */
+
+
+/********************/
+/* callback from ll */
+/********************/
+int ll_callback(isdn_ctrl *ic)
+{
+	switch (ic->command) {
+	case ISDN_STAT_ICALL:
+	case ISDN_STAT_ICALLW:
+		return (isdn_divert_icall(ic));
+		break;
+
+	case ISDN_STAT_PROT:
+		if ((ic->arg & 0xFF) == ISDN_PTYPE_EURO) {
+			if (ic->arg != DSS1_STAT_INVOKE_BRD)
+				return (prot_stat_callback(ic));
+			else
+				return (0); /* DSS1 invoke broadcast */
+		} else
+			return (-1); /* protocol not euro */
+
+	default:
+		return (isdn_divert_stat_callback(ic));
+	}
+} /* ll_callback */