Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

12 files changed, 6735 insertions, 0 deletions

diff --git a/drivers/isdn/capi/Kconfig b/drivers/isdn/capi/Kconfig
new file mode 100644
index 00000000000..8b6c9a431ff
--- /dev/null
+++ b/drivers/isdn/capi/Kconfig
@@ -0,0 +1,53 @@
+#
+# Config.in for the CAPI subsystem
+#
+config ISDN_DRV_AVMB1_VERBOSE_REASON
+	bool "Verbose reason code reporting (kernel size +=7K)"
+	depends on ISDN_CAPI
+	help
+	  If you say Y here, the AVM B1 driver will give verbose reasons for
+	  disconnecting. This will increase the size of the kernel by 7 KB. If
+	  unsure, say Y.
+
+config ISDN_CAPI_MIDDLEWARE
+	bool "CAPI2.0 Middleware support (EXPERIMENTAL)"
+	depends on ISDN_CAPI && EXPERIMENTAL
+	help
+	  This option will enhance the capabilities of the /dev/capi20
+	  interface.  It will provide a means of moving a data connection,
+	  established via the usual /dev/capi20 interface to a special tty
+	  device.  If you want to use pppd with pppdcapiplugin to dial up to
+	  your ISP, say Y here.
+
+config ISDN_CAPI_CAPI20
+	tristate "CAPI2.0 /dev/capi support"
+	depends on ISDN_CAPI
+	help
+	  This option will provide the CAPI 2.0 interface to userspace
+	  applications via /dev/capi20. Applications should use the
+	  standardized libcapi20 to access this functionality.  You should say
+	  Y/M here.
+
+config ISDN_CAPI_CAPIFS_BOOL
+	bool "CAPI2.0 filesystem support"
+	depends on ISDN_CAPI_MIDDLEWARE && ISDN_CAPI_CAPI20
+
+config ISDN_CAPI_CAPIFS
+	tristate
+	depends on ISDN_CAPI_CAPIFS_BOOL
+	default ISDN_CAPI_CAPI20
+	help
+	  This option provides a special file system, similar to /dev/pts with
+	  device nodes for the special ttys established by using the
+	  middleware extension above. If you want to use pppd with
+	  pppdcapiplugin to dial up to your ISP, say Y here.
+
+config ISDN_CAPI_CAPIDRV
+	tristate "CAPI2.0 capidrv interface support"
+	depends on ISDN_CAPI && ISDN_I4L
+	help
+	  This option provides the glue code to hook up CAPI driven cards to
+	  the legacy isdn4linux link layer.  If you have a card which is
+	  supported by a CAPI driver, but still want to use old features like
+	  ippp interfaces or ttyI emulation, say Y/M here.
+
diff --git a/drivers/isdn/capi/Makefile b/drivers/isdn/capi/Makefile
new file mode 100644
index 00000000000..57123e3e497
--- /dev/null
+++ b/drivers/isdn/capi/Makefile
@@ -0,0 +1,15 @@
+# Makefile for the CAPI subsystem.
+
+# Ordering constraints: kernelcapi.o first
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_ISDN_CAPI)			+= kernelcapi.o
+obj-$(CONFIG_ISDN_CAPI_CAPI20)		+= capi.o 
+obj-$(CONFIG_ISDN_CAPI_CAPIDRV)		+= capidrv.o
+obj-$(CONFIG_ISDN_CAPI_CAPIFS)		+= capifs.o
+
+# Multipart objects.
+
+kernelcapi-y				:= kcapi.o capiutil.o capilib.o
+kernelcapi-$(CONFIG_PROC_FS)		+= kcapi_proc.o
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
new file mode 100644
index 00000000000..06163538bb2
--- /dev/null
+++ b/drivers/isdn/capi/capi.c
@@ -0,0 +1,1554 @@
+/* $Id: capi.c,v 1.1.2.7 2004/04/28 09:48:59 armin Exp $
+ *
+ * CAPI 2.0 Interface for Linux
+ *
+ * Copyright 1996 by Carsten Paeth <calle@calle.de>
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/major.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/fcntl.h>
+#include <linux/fs.h>
+#include <linux/signal.h>
+#include <linux/mm.h>
+#include <linux/smp_lock.h>
+#include <linux/timer.h>
+#include <linux/wait.h>
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+#include <linux/tty.h>
+#ifdef CONFIG_PPP
+#include <linux/netdevice.h>
+#include <linux/ppp_defs.h>
+#include <linux/if_ppp.h>
+#endif /* CONFIG_PPP */
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+#include <linux/skbuff.h>
+#include <linux/proc_fs.h>
+#include <linux/poll.h>
+#include <linux/capi.h>
+#include <linux/kernelcapi.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/moduleparam.h>
+#include <linux/devfs_fs_kernel.h>
+#include <linux/isdn/capiutil.h>
+#include <linux/isdn/capicmd.h>
+#if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
+#include "capifs.h"
+#endif
+
+static char *revision = "$Revision: 1.1.2.7 $";
+
+MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface");
+MODULE_AUTHOR("Carsten Paeth");
+MODULE_LICENSE("GPL");
+
+#undef _DEBUG_REFCOUNT		/* alloc/free and open/close debug */
+#undef _DEBUG_TTYFUNCS		/* call to tty_driver */
+#undef _DEBUG_DATAFLOW		/* data flow */
+
+/* -------- driver information -------------------------------------- */
+
+static struct class_simple *capi_class;
+
+int capi_major = 68;		/* allocated */
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+#define CAPINC_NR_PORTS	32
+#define CAPINC_MAX_PORTS	256
+int capi_ttymajor = 191;
+int capi_ttyminors = CAPINC_NR_PORTS;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+module_param_named(major, capi_major, uint, 0);
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+module_param_named(ttymajor, capi_ttymajor, uint, 0);
+module_param_named(ttyminors, capi_ttyminors, uint, 0);
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+/* -------- defines ------------------------------------------------- */
+
+#define CAPINC_MAX_RECVQUEUE	10
+#define CAPINC_MAX_SENDQUEUE	10
+#define CAPI_MAX_BLKSIZE	2048
+
+/* -------- data structures ----------------------------------------- */
+
+struct capidev;
+struct capincci;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+struct capiminor;
+
+struct capiminor {
+	struct list_head list;
+	struct capincci  *nccip;
+	unsigned int      minor;
+
+	struct capi20_appl *ap;
+	u32		 ncci;
+	u16		 datahandle;
+	u16		 msgid;
+
+	struct tty_struct *tty;
+	int                ttyinstop;
+	int                ttyoutstop;
+	struct sk_buff    *ttyskb;
+	atomic_t           ttyopencount;
+
+	struct sk_buff_head inqueue;
+	int                 inbytes;
+	struct sk_buff_head outqueue;
+	int                 outbytes;
+
+	/* transmit path */
+	struct datahandle_queue {
+		    struct datahandle_queue *next;
+		    u16                    datahandle;
+	} *ackqueue;
+	int nack;
+
+};
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+struct capincci {
+	struct capincci *next;
+	u32		 ncci;
+	struct capidev	*cdev;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+	struct capiminor *minorp;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+};
+
+struct capidev {
+	struct list_head list;
+	struct capi20_appl ap;
+	u16		errcode;
+	unsigned        userflags;
+
+	struct sk_buff_head recvqueue;
+	wait_queue_head_t recvwait;
+
+	struct capincci *nccis;
+
+	struct semaphore ncci_list_sem;
+};
+
+/* -------- global variables ---------------------------------------- */
+
+static DEFINE_RWLOCK(capidev_list_lock);
+static LIST_HEAD(capidev_list);
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+static DEFINE_RWLOCK(capiminor_list_lock);
+static LIST_HEAD(capiminor_list);
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+/* -------- datahandles --------------------------------------------- */
+
+static int capincci_add_ack(struct capiminor *mp, u16 datahandle)
+{
+	struct datahandle_queue *n, **pp;
+
+	n = kmalloc(sizeof(*n), GFP_ATOMIC);
+	if (!n) {
+	   printk(KERN_ERR "capi: alloc datahandle failed\n");
+	   return -1;
+	}
+	n->next = NULL;
+	n->datahandle = datahandle;
+	for (pp = &mp->ackqueue; *pp; pp = &(*pp)->next) ;
+	*pp = n;
+	mp->nack++;
+	return 0;
+}
+
+static int capiminor_del_ack(struct capiminor *mp, u16 datahandle)
+{
+	struct datahandle_queue **pp, *p;
+
+	for (pp = &mp->ackqueue; *pp; pp = &(*pp)->next) {
+ 		if ((*pp)->datahandle == datahandle) {
+			p = *pp;
+			*pp = (*pp)->next;
+			kfree(p);
+			mp->nack--;
+			return 0;
+		}
+	}
+	return -1;
+}
+
+static void capiminor_del_all_ack(struct capiminor *mp)
+{
+	struct datahandle_queue **pp, *p;
+
+	pp = &mp->ackqueue;
+	while (*pp) {
+		p = *pp;
+		*pp = (*pp)->next;
+		kfree(p);
+		mp->nack--;
+	}
+}
+
+
+/* -------- struct capiminor ---------------------------------------- */
+
+static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci)
+{
+	struct capiminor *mp, *p;
+	unsigned int minor = 0;
+	unsigned long flags;
+
+	mp = kmalloc(sizeof(*mp), GFP_ATOMIC);
+  	if (!mp) {
+  		printk(KERN_ERR "capi: can't alloc capiminor\n");
+		return NULL;
+	}
+
+	memset(mp, 0, sizeof(struct capiminor));
+	mp->ap = ap;
+	mp->ncci = ncci;
+	mp->msgid = 0;
+	atomic_set(&mp->ttyopencount,0);
+
+	skb_queue_head_init(&mp->inqueue);
+	skb_queue_head_init(&mp->outqueue);
+
+	/* Allocate the least unused minor number.
+	 */
+	write_lock_irqsave(&capiminor_list_lock, flags);
+	if (list_empty(&capiminor_list))
+		list_add(&mp->list, &capiminor_list);
+	else {
+		list_for_each_entry(p, &capiminor_list, list) {
+			if (p->minor > minor)
+				break;
+			minor++;
+		}
+		
+		if (minor < capi_ttyminors) {
+			mp->minor = minor;
+			list_add(&mp->list, p->list.prev);
+		}
+	}
+		write_unlock_irqrestore(&capiminor_list_lock, flags);
+
+	if (!(minor < capi_ttyminors)) {
+		printk(KERN_NOTICE "capi: out of minors\n");
+			kfree(mp);
+		return NULL;
+	}
+
+	return mp;
+}
+
+static void capiminor_free(struct capiminor *mp)
+{
+	unsigned long flags;
+
+	write_lock_irqsave(&capiminor_list_lock, flags);
+	list_del(&mp->list);
+	write_unlock_irqrestore(&capiminor_list_lock, flags);
+
+	if (mp->ttyskb) kfree_skb(mp->ttyskb);
+	mp->ttyskb = NULL;
+	skb_queue_purge(&mp->inqueue);
+	skb_queue_purge(&mp->outqueue);
+	capiminor_del_all_ack(mp);
+	kfree(mp);
+}
+
+struct capiminor *capiminor_find(unsigned int minor)
+{
+	struct list_head *l;
+	struct capiminor *p = NULL;
+
+	read_lock(&capiminor_list_lock);
+	list_for_each(l, &capiminor_list) {
+		p = list_entry(l, struct capiminor, list);
+		if (p->minor == minor)
+			break;
+	}
+	read_unlock(&capiminor_list_lock);
+	if (l == &capiminor_list)
+		return NULL;
+
+	return p;
+}
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+/* -------- struct capincci ----------------------------------------- */
+
+static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci)
+{
+	struct capincci *np, **pp;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+	struct capiminor *mp = NULL;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+	np = kmalloc(sizeof(*np), GFP_ATOMIC);
+	if (!np)
+		return NULL;
+	memset(np, 0, sizeof(struct capincci));
+	np->ncci = ncci;
+	np->cdev = cdev;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+	mp = NULL;
+	if (cdev->userflags & CAPIFLAG_HIGHJACKING)
+		mp = np->minorp = capiminor_alloc(&cdev->ap, ncci);
+	if (mp) {
+		mp->nccip = np;
+#ifdef _DEBUG_REFCOUNT
+		printk(KERN_DEBUG "set mp->nccip\n");
+#endif
+#if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
+		capifs_new_ncci(mp->minor, MKDEV(capi_ttymajor, mp->minor));
+#endif
+	}
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+	for (pp=&cdev->nccis; *pp; pp = &(*pp)->next)
+		;
+	*pp = np;
+        return np;
+}
+
+static void capincci_free(struct capidev *cdev, u32 ncci)
+{
+	struct capincci *np, **pp;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+	struct capiminor *mp;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+	pp=&cdev->nccis;
+	while (*pp) {
+		np = *pp;
+		if (ncci == 0xffffffff || np->ncci == ncci) {
+			*pp = (*pp)->next;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+			if ((mp = np->minorp) != 0) {
+#if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
+				capifs_free_ncci(mp->minor);
+#endif
+				if (mp->tty) {
+					mp->nccip = NULL;
+#ifdef _DEBUG_REFCOUNT
+					printk(KERN_DEBUG "reset mp->nccip\n");
+#endif
+					tty_hangup(mp->tty);
+				} else {
+					capiminor_free(mp);
+				}
+			}
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+			kfree(np);
+			if (*pp == 0) return;
+		} else {
+			pp = &(*pp)->next;
+		}
+	}
+}
+
+static struct capincci *capincci_find(struct capidev *cdev, u32 ncci)
+{
+	struct capincci *p;
+
+	for (p=cdev->nccis; p ; p = p->next) {
+		if (p->ncci == ncci)
+			break;
+	}
+	return p;
+}
+
+/* -------- struct capidev ------------------------------------------ */
+
+static struct capidev *capidev_alloc(void)
+{
+	struct capidev *cdev;
+	unsigned long flags;
+
+	cdev = kmalloc(sizeof(*cdev), GFP_KERNEL);
+	if (!cdev)
+		return NULL;
+	memset(cdev, 0, sizeof(struct capidev));
+
+	init_MUTEX(&cdev->ncci_list_sem);
+	skb_queue_head_init(&cdev->recvqueue);
+	init_waitqueue_head(&cdev->recvwait);
+	write_lock_irqsave(&capidev_list_lock, flags);
+	list_add_tail(&cdev->list, &capidev_list);
+	write_unlock_irqrestore(&capidev_list_lock, flags);
+        return cdev;
+}
+
+static void capidev_free(struct capidev *cdev)
+{
+	unsigned long flags;
+
+	if (cdev->ap.applid) {
+		capi20_release(&cdev->ap);
+		cdev->ap.applid = 0;
+	}
+	skb_queue_purge(&cdev->recvqueue);
+
+	down(&cdev->ncci_list_sem);
+	capincci_free(cdev, 0xffffffff);
+	up(&cdev->ncci_list_sem);
+
+	write_lock_irqsave(&capidev_list_lock, flags);
+	list_del(&cdev->list);
+	write_unlock_irqrestore(&capidev_list_lock, flags);
+	kfree(cdev);
+}
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+/* -------- handle data queue --------------------------------------- */
+
+static struct sk_buff *
+gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb)
+{
+	struct sk_buff *nskb;
+	nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_ATOMIC);
+	if (nskb) {
+		u16 datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4+4+2);
+		unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN);
+		capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN);
+		capimsg_setu16(s, 2, mp->ap->applid);
+		capimsg_setu8 (s, 4, CAPI_DATA_B3);
+		capimsg_setu8 (s, 5, CAPI_RESP);
+		capimsg_setu16(s, 6, mp->msgid++);
+		capimsg_setu32(s, 8, mp->ncci);
+		capimsg_setu16(s, 12, datahandle);
+	}
+	return nskb;
+}
+
+static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb)
+{
+	struct sk_buff *nskb;
+	int datalen;
+	u16 errcode, datahandle;
+	struct tty_ldisc *ld;
+	
+	datalen = skb->len - CAPIMSG_LEN(skb->data);
+	if (mp->tty == NULL)
+	{
+#ifdef _DEBUG_DATAFLOW
+		printk(KERN_DEBUG "capi: currently no receiver\n");
+#endif
+		return -1;
+	}
+	
+	ld = tty_ldisc_ref(mp->tty);
+	if (ld == NULL)
+		return -1;
+	if (ld->receive_buf == NULL) {
+#if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
+		printk(KERN_DEBUG "capi: ldisc has no receive_buf function\n");
+#endif
+		goto bad;
+	}
+	if (mp->ttyinstop) {
+#if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
+		printk(KERN_DEBUG "capi: recv tty throttled\n");
+#endif
+		goto bad;
+	}
+	if (ld->receive_room &&
+	    ld->receive_room(mp->tty) < datalen) {
+#if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
+		printk(KERN_DEBUG "capi: no room in tty\n");
+#endif
+		goto bad;
+	}
+	if ((nskb = gen_data_b3_resp_for(mp, skb)) == 0) {
+		printk(KERN_ERR "capi: gen_data_b3_resp failed\n");
+		goto bad;
+	}
+	datahandle = CAPIMSG_U16(skb->data,CAPIMSG_BASELEN+4);
+	errcode = capi20_put_message(mp->ap, nskb);
+	if (errcode != CAPI_NOERROR) {
+		printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n",
+				errcode);
+		kfree_skb(nskb);
+		goto bad;
+	}
+	(void)skb_pull(skb, CAPIMSG_LEN(skb->data));
+#ifdef _DEBUG_DATAFLOW
+	printk(KERN_DEBUG "capi: DATA_B3_RESP %u len=%d => ldisc\n",
+				datahandle, skb->len);
+#endif
+	ld->receive_buf(mp->tty, skb->data, NULL, skb->len);
+	kfree_skb(skb);
+	tty_ldisc_deref(ld);
+	return 0;
+bad:
+	tty_ldisc_deref(ld);
+	return -1;
+}
+
+static void handle_minor_recv(struct capiminor *mp)
+{
+	struct sk_buff *skb;
+	while ((skb = skb_dequeue(&mp->inqueue)) != 0) {
+		unsigned int len = skb->len;
+		mp->inbytes -= len;
+		if (handle_recv_skb(mp, skb) < 0) {
+			skb_queue_head(&mp->inqueue, skb);
+			mp->inbytes += len;
+			return;
+		}
+	}
+}
+
+static int handle_minor_send(struct capiminor *mp)
+{
+	struct sk_buff *skb;
+	u16 len;
+	int count = 0;
+	u16 errcode;
+	u16 datahandle;
+
+	if (mp->tty && mp->ttyoutstop) {
+#if defined(_DEBUG_DATAFLOW) || defined(_DEBUG_TTYFUNCS)
+		printk(KERN_DEBUG "capi: send: tty stopped\n");
+#endif
+		return 0;
+	}
+
+	while ((skb = skb_dequeue(&mp->outqueue)) != 0) {
+		datahandle = mp->datahandle;
+		len = (u16)skb->len;
+		skb_push(skb, CAPI_DATA_B3_REQ_LEN);
+		memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN);
+		capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN);
+		capimsg_setu16(skb->data, 2, mp->ap->applid);
+		capimsg_setu8 (skb->data, 4, CAPI_DATA_B3);
+		capimsg_setu8 (skb->data, 5, CAPI_REQ);
+		capimsg_setu16(skb->data, 6, mp->msgid++);
+		capimsg_setu32(skb->data, 8, mp->ncci);	/* NCCI */
+		capimsg_setu32(skb->data, 12, (u32) skb->data); /* Data32 */
+		capimsg_setu16(skb->data, 16, len);	/* Data length */
+		capimsg_setu16(skb->data, 18, datahandle);
+		capimsg_setu16(skb->data, 20, 0);	/* Flags */
+
+		if (capincci_add_ack(mp, datahandle) < 0) {
+			skb_pull(skb, CAPI_DATA_B3_REQ_LEN);
+			skb_queue_head(&mp->outqueue, skb);
+			return count;
+		}
+		errcode = capi20_put_message(mp->ap, skb);
+		if (errcode == CAPI_NOERROR) {
+			mp->datahandle++;
+			count++;
+			mp->outbytes -= len;
+#ifdef _DEBUG_DATAFLOW
+			printk(KERN_DEBUG "capi: DATA_B3_REQ %u len=%u\n",
+							datahandle, len);
+#endif
+			continue;
+		}
+		capiminor_del_ack(mp, datahandle);
+
+		if (errcode == CAPI_SENDQUEUEFULL) {
+			skb_pull(skb, CAPI_DATA_B3_REQ_LEN);
+			skb_queue_head(&mp->outqueue, skb);
+			break;
+		}
+
+		/* ups, drop packet */
+		printk(KERN_ERR "capi: put_message = %x\n", errcode);
+		mp->outbytes -= len;
+		kfree_skb(skb);
+	}
+	return count;
+}
+
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+/* -------- function called by lower level -------------------------- */
+
+static void capi_recv_message(struct capi20_appl *ap, struct sk_buff *skb)
+{
+	struct capidev *cdev = ap->private;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+	struct capiminor *mp;
+	u16 datahandle;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+	struct capincci *np;
+	u32 ncci;
+
+	if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) {
+		u16 info = CAPIMSG_U16(skb->data, 12); // Info field
+		if (info == 0) {
+			down(&cdev->ncci_list_sem);
+			capincci_alloc(cdev, CAPIMSG_NCCI(skb->data));
+			up(&cdev->ncci_list_sem);
+		}
+	}
+	if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND) {
+		down(&cdev->ncci_list_sem);
+		capincci_alloc(cdev, CAPIMSG_NCCI(skb->data));
+		up(&cdev->ncci_list_sem);
+	}
+	if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) {
+		skb_queue_tail(&cdev->recvqueue, skb);
+		wake_up_interruptible(&cdev->recvwait);
+		return;
+	}
+	ncci = CAPIMSG_CONTROL(skb->data);
+	for (np = cdev->nccis; np && np->ncci != ncci; np = np->next)
+		;
+	if (!np) {
+		printk(KERN_ERR "BUG: capi_signal: ncci not found\n");
+		skb_queue_tail(&cdev->recvqueue, skb);
+		wake_up_interruptible(&cdev->recvwait);
+		return;
+	}
+#ifndef CONFIG_ISDN_CAPI_MIDDLEWARE
+	skb_queue_tail(&cdev->recvqueue, skb);
+	wake_up_interruptible(&cdev->recvwait);
+#else /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+	mp = np->minorp;
+	if (!mp) {
+		skb_queue_tail(&cdev->recvqueue, skb);
+		wake_up_interruptible(&cdev->recvwait);
+		return;
+	}
+
+
+	if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) {
+		
+		datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+4+2);
+#ifdef _DEBUG_DATAFLOW
+		printk(KERN_DEBUG "capi_signal: DATA_B3_IND %u len=%d\n",
+				datahandle, skb->len-CAPIMSG_LEN(skb->data));
+#endif
+		skb_queue_tail(&mp->inqueue, skb);
+		mp->inbytes += skb->len;
+		handle_minor_recv(mp);
+
+	} else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) {
+
+		datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4);
+#ifdef _DEBUG_DATAFLOW
+		printk(KERN_DEBUG "capi_signal: DATA_B3_CONF %u 0x%x\n",
+				datahandle,
+				CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+2));
+#endif
+		kfree_skb(skb);
+		(void)capiminor_del_ack(mp, datahandle);
+		if (mp->tty)
+			tty_wakeup(mp->tty);
+		(void)handle_minor_send(mp);
+
+	} else {
+		/* ups, let capi application handle it :-) */
+		skb_queue_tail(&cdev->recvqueue, skb);
+		wake_up_interruptible(&cdev->recvwait);
+	}
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+}
+
+/* -------- file_operations for capidev ----------------------------- */
+
+static ssize_t
+capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+{
+	struct capidev *cdev = (struct capidev *)file->private_data;
+	struct sk_buff *skb;
+	size_t copied;
+
+	if (!cdev->ap.applid)
+		return -ENODEV;
+
+	if ((skb = skb_dequeue(&cdev->recvqueue)) == 0) {
+
+		if (file->f_flags & O_NONBLOCK)
+			return -EAGAIN;
+
+		for (;;) {
+			interruptible_sleep_on(&cdev->recvwait);
+			if ((skb = skb_dequeue(&cdev->recvqueue)) != 0)
+				break;
+			if (signal_pending(current))
+				break;
+		}
+		if (skb == 0)
+			return -ERESTARTNOHAND;
+	}
+	if (skb->len > count) {
+		skb_queue_head(&cdev->recvqueue, skb);
+		return -EMSGSIZE;
+	}
+	if (copy_to_user(buf, skb->data, skb->len)) {
+		skb_queue_head(&cdev->recvqueue, skb);
+		return -EFAULT;
+	}
+	copied = skb->len;
+
+	kfree_skb(skb);
+
+	return copied;
+}
+
+static ssize_t
+capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
+{
+	struct capidev *cdev = (struct capidev *)file->private_data;
+	struct sk_buff *skb;
+	u16 mlen;
+
+	if (!cdev->ap.applid)
+		return -ENODEV;
+
+	skb = alloc_skb(count, GFP_USER);
+	if (!skb)
+		return -ENOMEM;
+
+	if (copy_from_user(skb_put(skb, count), buf, count)) {
+		kfree_skb(skb);
+		return -EFAULT;
+	}
+	mlen = CAPIMSG_LEN(skb->data);
+	if (CAPIMSG_CMD(skb->data) == CAPI_DATA_B3_REQ) {
+		if ((size_t)(mlen + CAPIMSG_DATALEN(skb->data)) != count) {
+			kfree_skb(skb);
+			return -EINVAL;
+		}
+	} else {
+		if (mlen != count) {
+			kfree_skb(skb);
+			return -EINVAL;
+		}
+	}
+	CAPIMSG_SETAPPID(skb->data, cdev->ap.applid);
+
+	if (CAPIMSG_CMD(skb->data) == CAPI_DISCONNECT_B3_RESP) {
+		down(&cdev->ncci_list_sem);
+		capincci_free(cdev, CAPIMSG_NCCI(skb->data));
+		up(&cdev->ncci_list_sem);
+	}
+
+	cdev->errcode = capi20_put_message(&cdev->ap, skb);
+
+	if (cdev->errcode) {
+		kfree_skb(skb);
+		return -EIO;
+	}
+	return count;
+}
+
+static unsigned int
+capi_poll(struct file *file, poll_table * wait)
+{
+	struct capidev *cdev = (struct capidev *)file->private_data;
+	unsigned int mask = 0;
+
+	if (!cdev->ap.applid)
+		return POLLERR;
+
+	poll_wait(file, &(cdev->recvwait), wait);
+	mask = POLLOUT | POLLWRNORM;
+	if (!skb_queue_empty(&cdev->recvqueue))
+		mask |= POLLIN | POLLRDNORM;
+	return mask;
+}
+
+static int
+capi_ioctl(struct inode *inode, struct file *file,
+	   unsigned int cmd, unsigned long arg)
+{
+	struct capidev *cdev = file->private_data;
+	struct capi20_appl *ap = &cdev->ap;
+	capi_ioctl_struct data;
+	int retval = -EINVAL;
+	void __user *argp = (void __user *)arg;
+
+	switch (cmd) {
+	case CAPI_REGISTER:
+		{
+			if (ap->applid)
+				return -EEXIST;
+
+			if (copy_from_user(&cdev->ap.rparam, argp,
+					   sizeof(struct capi_register_params)))
+				return -EFAULT;
+			
+			cdev->ap.private = cdev;
+			cdev->ap.recv_message = capi_recv_message;
+			cdev->errcode = capi20_register(ap);
+			if (cdev->errcode) {
+				ap->applid = 0;
+				return -EIO;
+			}
+		}
+		return (int)ap->applid;
+
+	case CAPI_GET_VERSION:
+		{
+			if (copy_from_user(&data.contr, argp,
+						sizeof(data.contr)))
+				return -EFAULT;
+		        cdev->errcode = capi20_get_version(data.contr, &data.version);
+			if (cdev->errcode)
+				return -EIO;
+			if (copy_to_user(argp, &data.version,
+					 sizeof(data.version)))
+				return -EFAULT;
+		}
+		return 0;
+
+	case CAPI_GET_SERIAL:
+		{
+			if (copy_from_user(&data.contr, argp,
+					   sizeof(data.contr)))
+				return -EFAULT;
+			cdev->errcode = capi20_get_serial (data.contr, data.serial);
+			if (cdev->errcode)
+				return -EIO;
+			if (copy_to_user(argp, data.serial,
+					 sizeof(data.serial)))
+				return -EFAULT;
+		}
+		return 0;
+	case CAPI_GET_PROFILE:
+		{
+			if (copy_from_user(&data.contr, argp,
+					   sizeof(data.contr)))
+				return -EFAULT;
+
+			if (data.contr == 0) {
+				cdev->errcode = capi20_get_profile(data.contr, &data.profile);
+				if (cdev->errcode)
+					return -EIO;
+
+				retval = copy_to_user(argp,
+				      &data.profile.ncontroller,
+				       sizeof(data.profile.ncontroller));
+
+			} else {
+				cdev->errcode = capi20_get_profile(data.contr, &data.profile);
+				if (cdev->errcode)
+					return -EIO;
+
+				retval = copy_to_user(argp, &data.profile,
+						   sizeof(data.profile));
+			}
+			if (retval)
+				return -EFAULT;
+		}
+		return 0;
+
+	case CAPI_GET_MANUFACTURER:
+		{
+			if (copy_from_user(&data.contr, argp,
+					   sizeof(data.contr)))
+				return -EFAULT;
+			cdev->errcode = capi20_get_manufacturer(data.contr, data.manufacturer);
+			if (cdev->errcode)
+				return -EIO;
+
+			if (copy_to_user(argp, data.manufacturer,
+					 sizeof(data.manufacturer)))
+				return -EFAULT;
+
+		}
+		return 0;
+	case CAPI_GET_ERRCODE:
+		data.errcode = cdev->errcode;
+		cdev->errcode = CAPI_NOERROR;
+		if (arg) {
+			if (copy_to_user(argp, &data.errcode,
+					 sizeof(data.errcode)))
+				return -EFAULT;
+		}
+		return data.errcode;
+
+	case CAPI_INSTALLED:
+		if (capi20_isinstalled() == CAPI_NOERROR)
+			return 0;
+		return -ENXIO;
+
+	case CAPI_MANUFACTURER_CMD:
+		{
+			struct capi_manufacturer_cmd mcmd;
+			if (!capable(CAP_SYS_ADMIN))
+				return -EPERM;
+			if (copy_from_user(&mcmd, argp, sizeof(mcmd)))
+				return -EFAULT;
+			return capi20_manufacturer(mcmd.cmd, mcmd.data);
+		}
+		return 0;
+
+	case CAPI_SET_FLAGS:
+	case CAPI_CLR_FLAGS:
+		{
+			unsigned userflags;
+			if (copy_from_user(&userflags, argp,
+					   sizeof(userflags)))
+				return -EFAULT;
+			if (cmd == CAPI_SET_FLAGS)
+				cdev->userflags |= userflags;
+			else
+				cdev->userflags &= ~userflags;
+		}
+		return 0;
+
+	case CAPI_GET_FLAGS:
+		if (copy_to_user(argp, &cdev->userflags,
+				 sizeof(cdev->userflags)))
+			return -EFAULT;
+		return 0;
+
+	case CAPI_NCCI_OPENCOUNT:
+		{
+			struct capincci *nccip;
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+			struct capiminor *mp;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+			unsigned ncci;
+			int count = 0;
+			if (copy_from_user(&ncci, argp, sizeof(ncci)))
+				return -EFAULT;
+
+			down(&cdev->ncci_list_sem);
+			if ((nccip = capincci_find(cdev, (u32) ncci)) == 0) {
+				up(&cdev->ncci_list_sem);
+				return 0;
+			}
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+			if ((mp = nccip->minorp) != 0) {
+				count += atomic_read(&mp->ttyopencount);
+			}
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+			up(&cdev->ncci_list_sem);
+			return count;
+		}
+		return 0;
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+	case CAPI_NCCI_GETUNIT:
+		{
+			struct capincci *nccip;
+			struct capiminor *mp;
+			unsigned ncci;
+			int unit = 0;
+			if (copy_from_user(&ncci, argp,
+					   sizeof(ncci)))
+				return -EFAULT;
+			down(&cdev->ncci_list_sem);
+			nccip = capincci_find(cdev, (u32) ncci);
+			if (!nccip || (mp = nccip->minorp) == 0) {
+				up(&cdev->ncci_list_sem);
+				return -ESRCH;
+			}
+			unit = mp->minor;
+			up(&cdev->ncci_list_sem);
+			return unit;
+		}
+		return 0;
+#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+	}
+	return -EINVAL;
+}
+
+static int
+capi_open(struct inode *inode, struct file *file)
+{
+	if (file->private_data)
+		return -EEXIST;
+
+	if ((file->private_data = capidev_alloc()) == 0)
+		return -ENOMEM;
+
+	return nonseekable_open(inode, file);
+}
+
+static int
+capi_release(struct inode *inode, struct file *file)
+{
+	struct capidev *cdev = (struct capidev *)file->private_data;
+
+	capidev_free(cdev);
+	file->private_data = NULL;
+	
+	return 0;
+}
+
+static struct file_operations capi_fops =
+{
+	.owner		= THIS_MODULE,
+	.llseek		= no_llseek,
+	.read		= capi_read,
+	.write		= capi_write,
+	.poll		= capi_poll,
+	.ioctl		= capi_ioctl,
+	.open		= capi_open,
+	.release	= capi_release,
+};
+
+#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+/* -------- tty_operations for capincci ----------------------------- */
+
+static int capinc_tty_open(struct tty_struct * tty, struct file * file)
+{
+	struct capiminor *mp;
+
+	if ((mp = capiminor_find(iminor(file->f_dentry->d_inode))) == 0)
+		return -ENXIO;
+	if (mp->nccip == 0)
+		return -ENXIO;
+
+	tty->driver_data = (void *)mp;
+
+	if (atomic_read(&mp->ttyopencount) == 0)
+		mp->tty = tty;
+	atomic_inc(&mp->ttyopencount);
+#ifdef _DEBUG_REFCOUNT
+	printk(KERN_DEBUG "capinc_tty_open ocount=%d\n", atomic_read(&mp->ttyopencount));
+#endif
+	handle_minor_recv(mp);
+	return 0;
+}
+
+static void