Release 4.11 drivers/isdn/capi/capi.c

/* $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/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/mutex.h>
#include <linux/mm.h>
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/tty.h>
#include <linux/netdevice.h>
#include <linux/ppp_defs.h>
#include <linux/ppp-ioctl.h>
#include <linux/skbuff.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.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/isdn/capiutil.h>
#include <linux/isdn/capicmd.h>

MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface");
MODULE_AUTHOR("Carsten Paeth");
MODULE_LICENSE("GPL");

/* -------- driver information -------------------------------------- */

static DEFINE_MUTEX(capi_mutex);

static struct class *capi_class;

static int capi_major = 68;		
/* allocated */

module_param_named(major, capi_major, uint, 0);

#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE

#define CAPINC_NR_PORTS		32

#define CAPINC_MAX_PORTS	256


static int capi_ttyminors = CAPINC_NR_PORTS;

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;
struct capiminor;


struct ackqueue_entry {
	
struct list_head	list;
	
u16			datahandle;
};


struct capiminor {
	
unsigned int      minor;

	
struct capi20_appl	*ap;
	
u32			ncci;
	
atomic_t		datahandle;
	
atomic_t		msgid;

	
struct tty_port port;
	
int                ttyinstop;
	
int                ttyoutstop;

	
struct sk_buff_head	inqueue;

	
struct sk_buff_head	outqueue;
	
int			outbytes;
	
struct sk_buff		*outskb;
	
spinlock_t		outlock;

	/* transmit path */
	
struct list_head ackqueue;
	
int nack;
	
spinlock_t ackqlock;
};


struct capincci {
	
struct list_head list;
	
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 list_head nccis;

	
struct mutex lock;
};

/* -------- global variables ---------------------------------------- */

static DEFINE_MUTEX(capidev_list_lock);
static LIST_HEAD(capidev_list);

#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE

static DEFINE_SPINLOCK(capiminors_lock);

static struct capiminor **capiminors;


static struct tty_driver *capinc_tty_driver;

/* -------- datahandles --------------------------------------------- */



static int capiminor_add_ack(struct capiminor *mp, u16 datahandle)
{
	struct ackqueue_entry *n;

	n = kmalloc(sizeof(*n), GFP_ATOMIC);
	if (unlikely(!n)) {
		printk(KERN_ERR "capi: alloc datahandle failed\n");
		return -1;
	}
	n->datahandle = datahandle;
	INIT_LIST_HEAD(&n->list);
	spin_lock_bh(&mp->ackqlock);
	list_add_tail(&n->list, &mp->ackqueue);
	mp->nack++;
	spin_unlock_bh(&mp->ackqlock);
	return 0;
}

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Kai Germaschewski
6
5.83%
1
12.50%
Jan Kiszka
4
3.88%
3
37.50%
Linus Torvalds
2
1.94%
1
12.50%
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103
100.00%
8
100.00%



static int capiminor_del_ack(struct capiminor *mp, u16 datahandle)
{
	struct ackqueue_entry *p, *tmp;

	spin_lock_bh(&mp->ackqlock);
	list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) {
		if (p->datahandle == datahandle) {
			list_del(&p->list);
			mp->nack--;
			spin_unlock_bh(&mp->ackqlock);
			kfree(p);
			return 0;
		}
	}
	spin_unlock_bh(&mp->ackqlock);
	return -1;
}

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38.71%
1
16.67%
Jan Kiszka
9
9.68%
2
33.33%
Linus Torvalds
2
2.15%
1
16.67%
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93
100.00%
6
100.00%



static void capiminor_del_all_ack(struct capiminor *mp)
{
	struct ackqueue_entry *p, *tmp;

	list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) {
		list_del(&p->list);
		kfree(p);
		mp->nack--;
	}
}


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Michael Büsch
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34.69%
1
12.50%
Kai Germaschewski
1
2.04%
1
12.50%
Linus Torvalds
1
2.04%
1
12.50%
Jan Kiszka
1
2.04%
1
12.50%
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49
100.00%
8
100.00%

/* -------- struct capiminor ---------------------------------------- */



static void capiminor_destroy(struct tty_port *port)
{
	struct capiminor *mp = container_of(port, struct capiminor, port);

	kfree_skb(mp->outskb);
	skb_queue_purge(&mp->inqueue);
	skb_queue_purge(&mp->outqueue);
	capiminor_del_all_ack(mp);
	kfree(mp);
}

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static const struct tty_port_operations capiminor_port_ops = {
	.destruct = capiminor_destroy,
};



static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci)
{
	struct capiminor *mp;
	struct device *dev;
	unsigned int minor;

	mp = kzalloc(sizeof(*mp), GFP_KERNEL);
	if (!mp) {
		printk(KERN_ERR "capi: can't alloc capiminor\n");
		return NULL;
	}

	mp->ap = ap;
	mp->ncci = ncci;
	INIT_LIST_HEAD(&mp->ackqueue);
	spin_lock_init(&mp->ackqlock);

	skb_queue_head_init(&mp->inqueue);
	skb_queue_head_init(&mp->outqueue);
	spin_lock_init(&mp->outlock);

	tty_port_init(&mp->port);
	mp->port.ops = &capiminor_port_ops;

	/* Allocate the least unused minor number. */
	spin_lock(&capiminors_lock);
	for (minor = 0; minor < capi_ttyminors; minor++)
		if (!capiminors[minor]) {
			capiminors[minor] = mp;
			break;
		}
	spin_unlock(&capiminors_lock);

	if (minor == capi_ttyminors) {
		printk(KERN_NOTICE "capi: out of minors\n");
		goto err_out1;
	}

	mp->minor = minor;

	dev = tty_port_register_device(&mp->port, capinc_tty_driver, minor,
			NULL);
	if (IS_ERR(dev))
		goto err_out2;

	return mp;

err_out2:
	spin_lock(&capiminors_lock);
	capiminors[minor] = NULL;
	spin_unlock(&capiminors_lock);

err_out1:
	tty_port_put(&mp->port);
	return NULL;
}

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30.23%
2
11.11%
Michael Büsch
15
5.81%
1
5.56%
Linus Torvalds
15
5.81%
2
11.11%
Armin Schindler
14
5.43%
1
5.56%
Kai Germaschewski
11
4.26%
2
11.11%
Jiri Slaby
10
3.88%
2
11.11%
Burman Yan
1
0.39%
1
5.56%
Al Viro
1
0.39%
1
5.56%
Total
258
100.00%
18
100.00%



static struct capiminor *capiminor_get(unsigned int minor)
{
	struct capiminor *mp;

	spin_lock(&capiminors_lock);
	mp = capiminors[minor];
	if (mp)
		tty_port_get(&mp->port);
	spin_unlock(&capiminors_lock);

	return mp;
}

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Linus Torvalds (pre-git)
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31.37%
2
20.00%
Linus Torvalds
8
15.69%
1
10.00%
Jiri Slaby
2
3.92%
1
10.00%
Adrian Bunk
1
1.96%
1
10.00%
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51
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10
100.00%



static inline void capiminor_put(struct capiminor *mp)
{
	tty_port_put(&mp->port);
}

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20
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2
100.00%



static void capiminor_free(struct capiminor *mp)
{
	tty_unregister_device(capinc_tty_driver, mp->minor);

	spin_lock(&capiminors_lock);
	capiminors[mp->minor] = NULL;
	spin_unlock(&capiminors_lock);

	capiminor_put(mp);
}

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/* -------- struct capincci ----------------------------------------- */



static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np)
{
	if (cdev->userflags & CAPIFLAG_HIGHJACKING)
		np->minorp = capiminor_alloc(&cdev->ap, np->ncci);
}

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static void capincci_free_minor(struct capincci *np)
{
	struct capiminor *mp = np->minorp;
	struct tty_struct *tty;

	if (mp) {
		tty = tty_port_tty_get(&mp->port);
		if (tty) {
			tty_vhangup(tty);
			tty_kref_put(tty);
		}

		capiminor_free(mp);
	}
}

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static inline unsigned int capincci_minor_opencount(struct capincci *np)
{
	struct capiminor *mp = np->minorp;
	unsigned int count = 0;
	struct tty_struct *tty;

	if (mp) {
		tty = tty_port_tty_get(&mp->port);
		if (tty) {
			count = tty->count;
			tty_kref_put(tty);
		}
	}
	return count;
}

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#else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */


static inline void

capincci_alloc_minor(struct capidev *cdev, struct capincci *np) { }
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static inline void capincci_free_minor(struct capincci *np) { }

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#endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */



static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci)
{
	struct capincci *np;

	np = kzalloc(sizeof(*np), GFP_KERNEL);
	if (!np)
		return NULL;
	np->ncci = ncci;
	np->cdev = cdev;

	capincci_alloc_minor(cdev, np);

	list_add_tail(&np->list, &cdev->nccis);

	return np;
}

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Jan Kiszka
10
12.99%
3
30.00%
Linus Torvalds
6
7.79%
2
20.00%
Kai Germaschewski
5
6.49%
1
10.00%
Burman Yan
1
1.30%
1
10.00%
Al Viro
1
1.30%
1
10.00%
Total
77
100.00%
10
100.00%



static void capincci_free(struct capidev *cdev, u32 ncci)
{
	struct capincci *np, *tmp;

	list_for_each_entry_safe(np, tmp, &cdev->nccis, list)
		if (ncci == 0xffffffff || np->ncci == ncci) {
			capincci_free_minor(np);
			list_del(&np->list);
			kfree(np);
		}
}

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32.81%
2
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Linus Torvalds
1
1.56%
1
20.00%
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64
100.00%
5
100.00%

#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE


static struct capincci *capincci_find(struct capidev *cdev, u32 ncci)
{
	struct capincci *np;

	list_for_each_entry(np, &cdev->nccis, list)
		if (np->ncci == ncci)
			return np;
	return NULL;
}

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1
25.00%
Linus Torvalds
2
4.65%
1
25.00%
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43
100.00%
4
100.00%

/* -------- 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_KERNEL);
	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, atomic_inc_return(&mp->msgid));
		capimsg_setu32(s, 8, mp->ncci);
		capimsg_setu16(s, 12, datahandle);
	}
	return nskb;
}

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3.42%
2
28.57%
Kai Germaschewski
2
1.37%
1
14.29%
Linus Torvalds
2
1.37%
1
14.29%
Total
146
100.00%
7
100.00%



static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb)
{
	unsigned int datalen = skb->len - CAPIMSG_LEN(skb->data);
	struct tty_struct *tty;
	struct sk_buff *nskb;
	u16 errcode, datahandle;
	struct tty_ldisc *ld;
	int ret = -1;

	tty = tty_port_tty_get(&mp->port);
	if (!tty) {
		pr_debug("capi: currently no receiver\n");
		return -1;
	}

	ld = tty_ldisc_ref(tty);
	if (!ld) {
		/* fatal error, do not requeue */
		ret = 0;
		kfree_skb(skb);
		goto deref_tty;
	}

	if (ld->ops->receive_buf == NULL) {
		pr_debug("capi: ldisc has no receive_buf function\n");
		/* fatal error, do not requeue */
		goto free_skb;
	}
	if (mp->ttyinstop) {
		pr_debug("capi: recv tty throttled\n");
		goto deref_ldisc;
	}

	if (tty->receive_room < datalen) {
		pr_debug("capi: no room in tty\n");
		goto deref_ldisc;
	}

	nskb = gen_data_b3_resp_for(mp, skb);
	if (!nskb) {
		printk(KERN_ERR "capi: gen_data_b3_resp failed\n");
		goto deref_ldisc;
	}

	datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4);

	errcode = capi20_put_message(mp->ap, nskb);

	if (errcode == CAPI_NOERROR) {
		skb_pull(skb, CAPIMSG_LEN(skb->data));
		pr_debug("capi: DATA_B3_RESP %u len=%d => ldisc\n",
			 datahandle, skb->len);
		ld->ops->receive_buf(tty, skb->data, NULL, skb->len);
	} else {
		printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n",
		       errcode);
		kfree_skb(nskb);

		if (errcode == CAPI_SENDQUEUEFULL)
			goto deref_ldisc;
	}

free_skb:
	ret = 0;
	kfree_skb(skb);

deref_ldisc:
	tty_ldisc_deref(ld);

deref_tty:
	tty_kref_put(tty);
	return ret;
}

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15.38%
Alan Cox
50
15.77%
3
23.08%
David S. Miller
5
1.58%
1
7.69%
Kai Germaschewski
2
0.63%
2
15.38%
Linus Torvalds
2
0.63%
1
7.69%
Al Viro
1
0.32%
1
7.69%
Total
317
100.00%
13
100.00%



static void handle_minor_recv(struct capiminor *mp)
{
	struct sk_buff *skb;

	while ((skb = skb_dequeue(&mp->inqueue)) != NULL)
		if (handle_recv_skb(mp, skb) < 0) {
			skb_queue_head(&mp->inqueue, skb);
			return;
		}
}

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1
1.79%
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33.33%
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56
100.00%
3
100.00%



static void handle_minor_send(struct capiminor *mp)
{
	struct tty_struct *tty;
	struct sk_buff *skb;
	u16 len;
	u16 errcode;
	u16 datahandle;

	tty = tty_port_tty_get(&mp->port);
	if (!tty)
		return;

	if (mp->ttyoutstop) {
		pr_debug("capi: send: tty stopped\n");
		tty_kref_put(tty);
		return;
	}

	while (1) {
		spin_lock_bh(&mp->outlock);
		skb = __skb_dequeue(&mp->outqueue);
		if (!skb) {
			spin_unlock_bh(&mp->outlock);
			break;
		}
		len = (u16)skb->len;
		mp->outbytes -= len;
		spin_unlock_bh(&mp->outlock);

		datahandle = atomic_inc_return(&mp->datahandle);
		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, atomic_inc_return(&mp->msgid));
		capimsg_setu32(skb->data, 8, mp->ncci);	/* NCCI */
		capimsg_setu32(skb->data, 12, (u32)(long)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 (capiminor_add_ack(mp, datahandle) < 0) {
			skb_pull(skb, CAPI_DATA_B3_REQ_LEN);

			spin_lock_bh(&mp->outlock);
			__skb_queue_head(&mp->outqueue, skb);
			mp->outbytes += len;
			spin_unlock_bh(&mp->outlock);

			break;
		}
		errcode = capi20_put_message(mp->ap, skb);
		if (errcode == CAPI_NOERROR) {
			pr_debug("capi: DATA_B3_REQ %u len=%u\n",
				 datahandle, len);
			continue;
		}
		capiminor_del_ack(mp, datahandle);

		if (errcode == CAPI_SENDQUEUEFULL) {
			skb_pull(skb, CAPI_DATA_B3_REQ_LEN);

			spin_lock_bh(&mp->outlock);
			__skb_queue_head(&mp->outqueue, skb);
			mp->outbytes += len;
			spin_unlock_bh(&mp->outlock);

			break;
		}

		/* ups, drop packet */
		printk(KERN_ERR "capi: put_message = %x\n", errcode);
		kfree_skb(skb);
	}
	tty_kref_put(tty);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
299
67.04%
1
9.09%
Jan Kiszka
132
29.60%
5
45.45%
Linus Torvalds
6
1.35%
1
9.09%
Kai Germaschewski
4
0.90%
2
18.18%
Andrew Morton
3
0.67%
1
9.09%
David S. Miller
2
0.45%
1
9.09%
Total
446
100.00%
11
100.00%

#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;
	struct capincci *np;
#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */

	mutex_lock(&cdev->lock);

	if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_CONF) {
		u16 info = CAPIMSG_U16(skb->data, 12); // Info field
		if ((info & 0xff00) == 0)
			capincci_alloc(cdev, CAPIMSG_NCCI(skb->data));
	}
	if (CAPIMSG_CMD(skb->data) == CAPI_CONNECT_B3_IND)
		capincci_alloc(cdev, CAPIMSG_NCCI(skb->data));

	if (CAPIMSG_COMMAND(skb->data) != CAPI_DATA_B3) {
		skb_queue_tail(&cdev->recvqueue, skb);
		wake_up_interruptible(&cdev->recvwait);
		goto unlock_out;
	}

#ifndef CONFIG_ISDN_CAPI_MIDDLEWARE
	skb_queue_tail(&cdev->recvqueue, skb);
	wake_up_interruptible(&cdev->recvwait);

#else /* CONFIG_ISDN_CAPI_MIDDLEWARE */

	np = capincci_find(cdev, CAPIMSG_CONTROL(skb->data));
	if (!np) {
		printk(KERN_ERR "BUG: capi_signal: ncci not found\n");
		skb_queue_tail(&cdev->recvqueue, skb);
		wake_up_interruptible(&cdev->recvwait);
		goto unlock_out;
	}

	mp = np->minorp;
	if (!mp) {
		skb_queue_tail(&cdev->recvqueue, skb);
		wake_up_interruptible(&cdev->recvwait);
		goto unlock_out;
	}
	if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) {
		datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 4 + 2);
		pr_debug("capi_signal: DATA_B3_IND %u len=%d\n",
			 datahandle, skb->len-CAPIMSG_LEN(skb->data));
		skb_queue_tail(&mp->inqueue, skb);

		handle_minor_recv(mp);

	} else if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_CONF) {

		datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4);
		pr_debug("capi_signal: DATA_B3_CONF %u 0x%x\n",
			 datahandle,
			 CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 2));
		kfree_skb(skb);
		capiminor_del_ack(mp, datahandle);
		tty_port_tty_wakeup(&mp->port);
		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 */

unlock_out:
	mutex_unlock(&cdev->lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
280
64.67%
1
7.69%
Kai Germaschewski
78
18.01%
4
30.77%
Jan Kiszka
38
8.78%
2
15.38%
Tilman Schmidt
31
7.16%
2
15.38%
Karsten Keil
2
0.46%
1
7.69%
David S. Miller
2
0.46%
1
7.69%
Linus Torvalds
1
0.23%
1
7.69%
Jiri Slaby
1
0.23%
1
7.69%
Total
433
100.00%
13
100.00%

/* -------- file_operations for capidev ----------------------------- */


static ssize_t

capi_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
	struct capidev *cdev = file->private_data;
	struct sk_buff *skb;
	size_t copied;
	int err;

	if (!cdev->ap.applid)
		return -ENODEV;

	skb = skb_dequeue(&cdev->recvqueue);
	if (!skb) {
		if (file->f_flags & O_NONBLOCK)
			return -EAGAIN;
		err = wait_event_interruptible(cdev->recvwait,
					       (skb = skb_dequeue(&cdev->recvqueue)));
		if (err)
			return err;
	}
	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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
160
87.91%
1
20.00%
Jan Kiszka
15
8.24%
1
20.00%
Arnaldo Carvalho de Melo
4
2.20%
1
20.00%
Kai Germaschewski
2
1.10%
1
20.00%
Al Viro
1
0.55%
1
20.00%
Total
182
100.00%
5
100.00%


static ssize_t

capi_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
{
	struct capidev *cdev = 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) {
		mutex_lock(&cdev->lock);
		capincci_free(cdev, CAPIMSG_NCCI(skb->data));
		mutex_unlock(&cdev->lock);
	}

	cdev->errcode = capi20_put_message(&cdev->ap, skb);

	if (cdev->errcode) {
		kfree_skb(skb);
		return -EIO;
	}
	return count;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
192
74.42%
1
7.69%
Kai Germaschewski
31
12.02%
4
30.77%
Armin Schindler
12
4.65%
1
7.69%
Linus Torvalds
12
4.65%
3
23.08%
Karsten Keil
6
2.33%
1
7.69%
Matthias Kaehlcke
2
0.78%
1
7.69%
Jan Kiszka
2
0.78%
1
7.69%
Al Viro
1
0.39%
1
7.69%
Total
258
100.00%
13
100.00%


static unsigned int

capi_poll(struct file *file, poll_table *wait)
{
	struct capidev *cdev = 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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
81
97.59%
1
50.00%
Kai Germaschewski
2
2.41%
1
50.00%
Total
83
100.00%
2
100.00%


static int

capi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	struct capidev *cdev = file->private_data;
	capi_ioctl_struct data;
	int retval = -EINVAL;
	void __user *argp = (void __user *)arg;

	switch (cmd) {
	case CAPI_REGISTER:
		mutex_lock(&cdev->lock);

		if (cdev->ap.applid) {
			retval = -EEXIST;
			goto register_out;
		}
		if (copy_from_user(&cdev->ap.rparam, argp,
				   sizeof(struct capi_register_params))) {
			retval = -EFAULT;
			goto register_out;
		}
		cdev->ap.private = cdev;
		cdev->ap.recv_message = capi_recv_message;
		cdev->errcode = capi20_register(&cdev->ap);
		retval = (int)cdev->ap.applid;
		if (cdev->errcode) {
			cdev->ap.applid = 0;
			retval = -EIO;
		}

register_out:
		mutex_unlock(&cdev->lock);
		return retval;

	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);
	}
	case CAPI_SET_FLAGS:
	case CAPI_CLR_FLAGS: {
		unsigned userflags;

		if (copy_from_user(&userflags, argp, sizeof(userflags)))
			return -EFAULT;

		mutex_lock(&cdev->lock);
		if (cmd == CAPI_SET_FLAGS)
			cdev->userflags |= userflags;
		else
			cdev->userflags &= ~userflags;
		mutex_unlock(&cdev->lock);
		return 0;
	}
	case CAPI_GET_FLAGS:
		if (copy_to_user(argp, &cdev->userflags,
				 sizeof(cdev->userflags)))
			return -EFAULT;
		return 0;

#ifndef CONFIG_ISDN_CAPI_MIDDLEWARE
	case CAPI_NCCI_OPENCOUNT:
		return 0;

#else /* CONFIG_ISDN_CAPI_MIDDLEWARE */
	case CAPI_NCCI_OPENCOUNT: {
		struct capincci *nccip;
		unsigned ncci;
		int count = 0;

		if (copy_from_user(&ncci, argp, sizeof(ncci)))
			return -EFAULT;

		mutex_lock(&cdev->lock);
		nccip = capincci_find(cdev, (u32)ncci);
		if (nccip)
			count = capincci_minor_opencount(nccip);
		mutex_unlock(&cdev->lock);
		return count;
	}

	case CAPI_NCCI_GETUNIT: {
		struct capincci *nccip;
		struct capiminor *mp;
		unsigned ncci;
		int unit = -ESRCH;

		if (copy_from_user(&ncci, argp, sizeof(ncci)))
			return -EFAULT;

		mutex_lock(&cdev->lock);
		nccip = capincci_find(cdev, (u32)ncci);
		if (nccip) {
			mp = nccip->minorp;
			if (mp)
				unit = mp->minor;
		}
		mutex_unlock(&cdev->lock);
		return unit;
	}
#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */

	default:
		return -EINVAL;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
730
74.95%
1
7.14%
Jan Kiszka
97
9.96%
2
14.29%
Kai Germaschewski
40
4.11%
5
35.71%
Armin Schindler
35
3.59%
1
7.14%
Al Viro
28
2.87%
1
7.14%
Arnaldo Carvalho de Melo
26
2.67%
1
7.14%
Tilman Schmidt
12
1.23%
1
7.14%
Matthias Kaehlcke
4
0.41%
1
7.14%
Linus Torvalds
2
0.21%
1
7.14%
Total
974
100.00%
14
100.00%


static long

capi_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	int ret;

	mutex_lock(&capi_mutex);
	ret = capi_ioctl(file, cmd, arg);
	mutex_unlock(&capi_mutex);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Arnd Bergmann
48
100.00%
2
100.00%
Total
48
100.00%
2
100.00%



static int capi_open(struct inode *inode, struct file *file)
{
	struct capidev *cdev;

	cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
	if (!cdev)
		return -ENOMEM;

	mutex_init(&cdev->lock);
	skb_queue_head_init(&cdev->recvqueue);
	init_waitqueue_head(&cdev->recvwait);
	INIT_LIST_HEAD(&cdev->nccis);
	file->private_data = cdev;

	mutex_lock(&capidev_list_lock);
	list_add_tail(&cdev->list, &capidev_list);
	mutex_unlock(&capidev_list_lock);

	return nonseekable_open(inode, file);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jan Kiszka
77
68.75%
3
50.00%
Linus Torvalds (pre-git)
25
22.32%
1
16.67%
Jonathan Corbet
7
6.25%
1
16.67%
Linus Torvalds
3
2.68%
1
16.67%
Total
112
100.00%
6
100.00%



static int capi_release(struct inode *inode, struct file *file)
{
	struct capidev *cdev = file->private_data;

	mutex_lock(&capidev_list_lock);
	list_del(&cdev->list);
	mutex_unlock(&capidev_list_lock);

	if (cdev->ap.applid)
		capi20_release(&cdev->ap);
	skb_queue_purge(&cdev->recvqueue);
	capincci_free(cdev, 0xffffffff);

	kfree(cdev);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jan Kiszka
50
59.52%
1
33.33%
Linus Torvalds (pre-git)
34
40.48%
2
66.67%
Total
84
100.00%
3
100.00%


static const struct file_operations capi_fops =
{
	.owner		= THIS_MODULE,
	.llseek		= no_llseek,
	.read		= capi_read,
	.write		= capi_write,
	.poll		= capi_poll,
	.unlocked_ioctl	= capi_unlocked_ioctl,
	.open		= capi_open,
	.release	= capi_release,
};

#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
/* -------- tty_operations for capincci ----------------------------- */


static int

capinc_tty_install(struct tty_driver *driver, struct tty_struct *tty)
{
	struct capiminor *mp = capiminor_get(tty->index);
	int ret = tty_standard_install(driver, tty);

	if (ret == 0)
		tty->driver_data = mp;
	else
		capiminor_put(mp);
	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jan Kiszka
30
50.85%
2
33.33%
Linus Torvalds (pre-git)
22
37.29%
1
16.67%
Jiri Slaby
6
10.17%
2
33.33%
Linus Torvalds
1
1.69%
1
16.67%
Total
59
100.00%
6
100.00%



static void capinc_tty_cleanup(struct tty_struct *tty)
{
	struct capiminor *mp = tty->driver_data;
	tty->driver_data = NULL;
	capiminor_put(mp);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jan Kiszka
25
80.65%
1
50.00%
Linus Torvalds (pre-git)
6
19.35%
1
50.00%
Total
31
100.00%
2
100.00%



static int capinc_tty_open(struct tty_struct *tty, struct file *filp)
{
	struct capiminor *mp = tty->driver_data;
	int err;

	err = tty_port_open(&mp->port, tty, filp);
	if (err)
		return err;

	handle_minor_recv(mp);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jan Kiszka
41
71.93%
2
50.00%
Linus Torvalds (pre-git)
11
19.30%
1
25.00%
Michael Büsch
5
8.77%
1
25.00%
Total
57
100.00%
4
100.00%



static void capinc_tty_close(struct tty_struct *tty, struct file *filp)
{
	struct capiminor *mp = tty->driver_data;

	tty_port_close(&mp->port, tty, filp);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
21
56.76%
1
25.00%
Jan Kiszka
15
40.54%
2
50.00%
Linus Torvalds
1
2.70%
1
25.00%
Total
37
100.00%
4
100.00%



static int capinc_tty_write(struct tty_struct *tty,
			    const unsigned char *buf, int count)
{
	struct capiminor *mp = tty->driver_data;
	struct sk_buff *skb;

	pr_debug("capinc_tty_write(count=%d)\n", count);

	spin_lock_bh(&mp->outlock);
	skb = mp->outskb;
	if (skb) {
		mp->outskb = NULL;
		__skb_queue_tail(&mp->outqueue, skb);
		mp->outbytes += skb->len;
	}

	skb = alloc_skb(CAPI_DATA_B3_REQ_LEN + count, GFP_ATOMIC);
	if (!skb) {
		printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n");
		spin_unlock_bh(&mp->outlock);
		return -ENOMEM;
	}

	skb_reserve(skb, CAPI_DATA_B3_REQ_LEN);
	memcpy(skb_put(skb, count), buf, count);

	__skb_queue_tail(&mp->outqueue, skb);
	mp->outbytes += skb->len;
	spin_unlock_bh(&mp->outlock);

	handle_minor_send(mp);

	return count;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
144
81.82%
1
14.29%
Jan Kiszka
20
11.36%
1
14.29%
Michael Büsch
8
4.55%
1
14.29%
Linus Torvalds
2
1.14%
2
28.57%
Al Viro
1
0.57%
1
14.29%
David S. Miller
1
0.57%
1
14.29%
Total
176
100.00%
7
100.00%



static int capinc_tty_put_char(struct tty_struct *tty, unsigned char ch)
{
	struct capiminor *mp = tty->driver_data;
	bool invoke_send = false;
	struct sk_buff *skb;
	int ret = 1;

	pr_debug("capinc_put_char(%u)\n", ch);

	spin_lock_bh(&mp->outlock);
	skb = mp->outskb;
	if (skb) {
		if (skb_tailroom(skb) > 0) {
			*(skb_put(skb, 1)) = ch;
			goto unlock_out;
		}
		mp->outskb = NULL;
		__skb_queue_tail(&mp->outqueue, skb);
		mp->outbytes += skb->len;
		invoke_send = true;
	}

	skb = alloc_skb(CAPI_DATA_B3_REQ_LEN + CAPI_MAX_BLKSIZE, GFP_ATOMIC);
	if (skb) {
		skb_reserve(skb, CAPI_DATA_B3_REQ_LEN);
		*(skb_put(skb, 1)) = ch;
		mp->outskb = skb;
	} else {
		printk(KERN_ERR "capinc_put_char: char %u lost\n", ch);
		ret = 0;
	}

unlock_out:
	spin_unlock_bh(&mp->outlock);

	if (invoke_send)
		handle_minor_send(mp);

	return ret;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
141
70.85%
1
14.29%
Jan Kiszka
34
17.09%
1
14.29%
Alan Cox
13
6.53%
1
14.29%
Michael Büsch
8
4.02%
1
14.29%
Linus Torvalds
1
0.50%
1
14.29%
Al Viro
1
0.50%
1
14.29%
David S. Miller
1
0.50%
1
14.29%
Total
199
100.00%
7
100.00%



static void capinc_tty_flush_chars(struct tty_struct *tty)
{
	struct capiminor *mp = tty->driver_data;
	struct sk_buff *skb;

	pr_debug("capinc_tty_flush_chars\n");

	spin_lock_bh(&mp->outlock);
	skb = mp->outskb;
	if (skb) {
		mp->outskb = NULL;
		__skb_queue_tail(&mp->outqueue, skb);
		mp->outbytes += skb->len;
		spin_unlock_bh(&mp->outlock);

		handle_minor_send(mp);
	} else
		spin_unlock_bh(&mp->outlock);

	handle_minor_recv(mp);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
69
68.32%
1
16.67%
Jan Kiszka
22
21.78%
1
16.67%
Michael Büsch
7
6.93%
1
16.67%
Al Viro
1
0.99%
1
16.67%
Linus Torvalds
1
0.99%
1
16.67%
David S. Miller
1
0.99%
1
16.67%
Total
101
100.00%
6
100.00%



static int capinc_tty_write_room(struct tty_struct *tty)
{
	struct capiminor *mp = tty->driver_data;
	int room;

	room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue);
	room *= CAPI_MAX_BLKSIZE;
	pr_debug("capinc_tty_write_room = %d\n", room);
	return room;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
47
95.92%
1
33.33%
Linus Torvalds
1
2.04%
1
33.33%
David S. Miller
1
2.04%
1
33.33%
Total
49
100.00%
3
100.00%



static int capinc_tty_chars_in_buffer(struct tty_struct *tty)
{
	struct capiminor *mp = tty->driver_data;

	pr_debug("capinc_tty_chars_in_buffer = %d nack=%d sq=%d rq=%d\n",
		 mp->outbytes, mp->nack,
		 skb_queue_len(&mp->outqueue),
		 skb_queue_len(&mp->inqueue));
	return mp->outbytes;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
52
96.30%
1
33.33%
Adrian Bunk
1
1.85%
1
33.33%
David S. Miller
1
1.85%
1
33.33%
Total
54
100.00%
3
100.00%



static int capinc_tty_ioctl(struct tty_struct *tty,
			    unsigned int cmd, unsigned long arg)
{
	return -ENOIOCTLCMD;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
20
86.96%
1
33.33%
Alan Cox
2
8.70%
1
33.33%
Linus Torvalds
1
4.35%
1
33.33%
Total
23
100.00%
3
100.00%



static void capinc_tty_set_termios(struct tty_struct *tty, struct ktermios *old)
{
	pr_debug("capinc_tty_set_termios\n");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
18
85.71%
1
25.00%
Alan Cox
1
4.76%
1
25.00%
Linus Torvalds
1
4.76%
1
25.00%
David S. Miller
1
4.76%
1
25.00%
Total
21
100.00%
4
100.00%



static void capinc_tty_throttle(struct tty_struct *tty)
{
	struct capiminor *mp = tty->driver_data;
	pr_debug("capinc_tty_throttle\n");
	mp->ttyinstop = 1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
29
93.55%
1
33.33%
David S. Miller
1
3.23%
1
33.33%
Linus Torvalds
1
3.23%
1
33.33%
Total
31
100.00%
3
100.00%



static void capinc_tty_unthrottle(struct tty_struct *tty)
{
	struct capiminor *mp = tty->driver_data;

	pr_debug("capinc_tty_unthrottle\n");
	mp->ttyinstop = 0;
	handle_minor_recv(mp);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
34
94.44%
1
33.33%
David S. Miller
1
2.78%
1
33.33%
Linus Torvalds
1
2.78%
1
33.33%
Total
36
100.00%
3
100.00%



static void capinc_tty_stop(struct tty_struct *tty)
{
	struct capiminor *mp = tty->driver_data;

	pr_debug("capinc_tty_stop\n");
	mp->ttyoutstop = 1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
29
93.55%
1
33.33%
David S. Miller
1
3.23%
1
33.33%
Linus Torvalds
1
3.23%
1
33.33%
Total
31
100.00%
3
100.00%



static void capinc_tty_start(struct tty_struct *tty)
{
	struct capiminor *mp = tty->driver_data;

	pr_debug("capinc_tty_start\n");
	mp->ttyoutstop = 0;
	handle_minor_send(mp);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
34
94.44%
1
33.33%
Linus Torvalds
1
2.78%
1
33.33%
David S. Miller
1
2.78%
1
33.33%
Total
36
100.00%
3
100.00%



static void capinc_tty_hangup(struct tty_struct *tty)
{
	struct capiminor *mp = tty->driver_data;

	pr_debug("capinc_tty_hangup\n");
	tty_port_hangup(&mp->port);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jan Kiszka
17
51.52%
1
25.00%
Linus Torvalds (pre-git)
14
42.42%
1
25.00%
Linus Torvalds
1
3.03%
1
25.00%
David S. Miller
1
3.03%
1
25.00%
Total
33
100.00%
4
100.00%



static int capinc_tty_break_ctl(struct tty_struct *tty, int state)
{
	pr_debug("capinc_tty_break_ctl(%d)\n", state);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
18
75.00%
1
25.00%
Alan Cox
4
16.67%
1
25.00%
Linus Torvalds
1
4.17%
1
25.00%
David S. Miller
1
4.17%
1
25.00%
Total
24
100.00%
4
100.00%



static void capinc_tty_flush_buffer(struct tty_struct *tty)
{
	pr_debug("capinc_tty_flush_buffer\n");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
14
87.50%
1
33.33%
David S. Miller
1
6.25%
1
33.33%
Linus Torvalds
1
6.25%
1
33.33%
Total
16
100.00%
3
100.00%



static void capinc_tty_set_ldisc(struct tty_struct *tty)
{
	pr_debug("capinc_tty_set_ldisc\n");
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
14
87.50%
1
33.33%
David S. Miller
1
6.25%
1
33.33%
Linus Torvalds
1
6.25%
1
33.33%
Total
16
100.00%
3
100.00%



static void capinc_tty_send_xchar(struct tty_struct *tty, char ch)
{
	pr_debug("capinc_tty_send_xchar(%d)\n", ch);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
19
90.48%
1
33.33%
Linus Torvalds
1
4.76%
1
33.33%
David S. Miller
1
4.76%
1
33.33%
Total
21
100.00%
3
100.00%


static const struct tty_operations capinc_ops = {
	.open = capinc_tty_open,
	.close = capinc_tty_close,
	.write = capinc_tty_write,
	.put_char = capinc_tty_put_char,
	.flush_chars = capinc_tty_flush_chars,
	.write_room = capinc_tty_write_room,
	.chars_in_buffer = capinc_tty_chars_in_buffer,
	.ioctl = capinc_tty_ioctl,
	.set_termios = capinc_tty_set_termios,
	.throttle = capinc_tty_throttle,
	.unthrottle = capinc_tty_unthrottle,
	.stop = capinc_tty_stop,
	.start = capinc_tty_start,
	.hangup = capinc_tty_hangup,
	.break_ctl = capinc_tty_break_ctl,
	.flush_buffer = capinc_tty_flush_buffer,
	.set_ldisc = capinc_tty_set_ldisc,
	.send_xchar = capinc_tty_send_xchar,
	.install = capinc_tty_install,
	.cleanup = capinc_tty_cleanup,
};



static int __init capinc_tty_init(void)
{
	struct tty_driver *drv;
	int err;

	if (capi_ttyminors > CAPINC_MAX_PORTS)
		capi_ttyminors = CAPINC_MAX_PORTS;
	if (capi_ttyminors <= 0)
		capi_ttyminors = CAPINC_NR_PORTS;

	capiminors = kzalloc(sizeof(struct capiminor *) * capi_ttyminors,
			     GFP_KERNEL);
	if (!capiminors)
		return -ENOMEM;

	drv = alloc_tty_driver(capi_ttyminors);
	if (!drv) {
		kfree(capiminors);
		return -ENOMEM;
	}
	drv->driver_name = "capi_nc";
	drv->name = "capi!";
	drv->major = 0;
	drv->minor_start = 0;
	drv->type = TTY_DRIVER_TYPE_SERIAL;
	drv->subtype = SERIAL_TYPE_NORMAL;
	drv->init_termios = tty_std_termios;
	drv->init_termios.c_iflag = ICRNL;
	drv->init_termios.c_oflag = OPOST | ONLCR;
	drv->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
	drv->init_termios.c_lflag = 0;
	drv->flags =
		TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS |
		TTY_DRIVER_DYNAMIC_DEV;
	tty_set_operations(drv, &capinc_ops);

	err = tty_register_driver(drv);
	if (err) {
		put_tty_driver(drv);
		kfree(capiminors);
		printk(KERN_ERR "Couldn't register capi_nc driver\n");
		return err;
	}
	capinc_tty_driver = drv;
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
119
52.65%
2
16.67%
Jan Kiszka
50
22.12%
4
33.33%
Karsten Keil
25
11.06%
1
8.33%
Al Viro
24
10.62%
1
8.33%
Marcel Holtmann
5
2.21%
1
8.33%
Paul Bolle
1
0.44%
1
8.33%
Julia Lawall
1
0.44%
1
8.33%
Linus Torvalds
1
0.44%
1
8.33%
Total
226
100.00%
12
100.00%



static void __exit capinc_tty_exit(void)
{
	tty_unregister_driver(capinc_tty_driver);
	put_tty_driver(capinc_tty_driver);
	kfree(capiminors);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
11
45.83%
2
33.33%
Jan Kiszka
8
33.33%
2
33.33%
Al Viro
4
16.67%
1
16.67%
Linus Torvalds
1
4.17%
1
16.67%
Total
24
100.00%
6
100.00%

#else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */



static inline int capinc_tty_init(void)
{
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jan Kiszka
12
100.00%
1
100.00%
Total
12
100.00%
1
100.00%



static inline void capinc_tty_exit(void) { }

Contributors
Person
Tokens
Prop
Commits
CommitProp
Jan Kiszka
8
100.00%
1
100.00%
Total
8
100.00%
1
100.00%

#endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */

/* -------- /proc functions ----------------------------------------- */

/*
 * /proc/capi/capi20:
 *  minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
 */


static int capi20_proc_show(struct seq_file *m, void *v)
{
	struct capidev *cdev;
	struct list_head *l;

	mutex_lock(&capidev_list_lock);
	list_for_each(l, &capidev_list) {
		cdev = list_entry(l, struct capidev, list);
		seq_printf(m, "0 %d %lu %lu %lu %lu\n",
			   cdev->ap.applid,
			   cdev->ap.nrecvctlpkt,
			   cdev->ap.nrecvdatapkt,
			   cdev->ap.nsentctlpkt,
			   cdev->ap.nsentdatapkt);
	}
	mutex_unlock(&capidev_list_lock);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
44
45.36%
4
44.44%
Linus Torvalds
33
34.02%
1
11.11%
Kai Germaschewski
10
10.31%
2
22.22%
Alexey Dobriyan
8
8.25%
1
11.11%
Jan Kiszka
2
2.06%
1
11.11%
Total
97
100.00%
9
100.00%



static int capi20_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, capi20_proc_show, NULL);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Dobriyan
20
76.92%
1
50.00%
Linus Torvalds (pre-git)
6
23.08%
1
50.00%
Total
26
100.00%
2
100.00%


static const struct file_operations capi20_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= capi20_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

/*
 * /proc/capi/capi20ncci:
 *  applid ncci
 */


static int capi20ncci_proc_show(struct seq_file *m, void *v)
{
	struct capidev *cdev;
	struct capincci *np;

	mutex_lock(&capidev_list_lock);
	list_for_each_entry(cdev, &capidev_list, list) {
		mutex_lock(&cdev->lock);
		list_for_each_entry(np, &cdev->nccis, list)
			seq_printf(m, "%d 0x%x\n", cdev->ap.applid, np->ncci);
		mutex_unlock(&cdev->lock);
	}
	mutex_unlock(&capidev_list_lock);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
32
35.16%
2
22.22%
Jan Kiszka
30
32.97%
3
33.33%
Linus Torvalds
17
18.68%
2
22.22%
Alexey Dobriyan
10
10.99%
1
11.11%
Kai Germaschewski
2
2.20%
1
11.11%
Total
91
100.00%
9
100.00%



static int capi20ncci_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, capi20ncci_proc_show, NULL);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Dobriyan
18
69.23%
1
33.33%
Linus Torvalds (pre-git)
7
26.92%
1
33.33%
Linus Torvalds
1
3.85%
1
33.33%
Total
26
100.00%
3
100.00%


static const struct file_operations capi20ncci_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= capi20ncci_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};



static void __init proc_init(void)
{
	proc_create("capi/capi20", 0, NULL, &capi20_proc_fops);
	proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Alexey Dobriyan
16
48.48%
1
25.00%
Linus Torvalds (pre-git)
16
48.48%
2
50.00%
Al Viro
1
3.03%
1
25.00%
Total
33
100.00%
4
100.00%



static void __exit proc_exit(void)
{
	remove_proc_entry("capi/capi20", NULL);
	remove_proc_entry("capi/capi20ncci", NULL);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
15
65.22%
3
60.00%
Alexey Dobriyan
6
26.09%
1
20.00%
Al Viro
2
8.70%
1
20.00%
Total
23
100.00%
5
100.00%

/* -------- init function and module interface ---------------------- */




static int __init capi_init(void)
{
	const char *compileinfo;
	int major_ret;

	major_ret = register_chrdev(capi_major, "capi20", &capi_fops);
	if (major_ret < 0) {
		printk(KERN_ERR "capi20: unable to get major %d\n", capi_major);
		return major_ret;
	}
	capi_class = class_create(THIS_MODULE, "capi");
	if (IS_ERR(capi_class)) {
		unregister_chrdev(capi_major, "capi20");
		return PTR_ERR(capi_class);
	}

	device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi20");

	if (capinc_tty_init() < 0) {
		device_destroy(capi_class, MKDEV(capi_major, 0));
		class_destroy(capi_class);
		unregister_chrdev(capi_major, "capi20");
		return -ENOMEM;
	}

	proc_init();

#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
	compileinfo = " (middleware)";
#else
	compileinfo = " (no middleware)";
#endif
	printk(KERN_NOTICE "CAPI 2.0 started up with major %d%s\n",
	       capi_major, compileinfo);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
62
37.58%
6
31.58%
Marcel Holtmann
55
33.33%
1
5.26%
Linus Torvalds
17
10.30%
1
5.26%
Andrew Morton
12
7.27%
1
5.26%
Greg Kroah-Hartman
11
6.67%
5
26.32%
Jan Kiszka
6
3.64%
3
15.79%
Paul Bolle
1
0.61%
1
5.26%
Tony Jones
1
0.61%
1
5.26%
Total
165
100.00%
19
100.00%



static void __exit capi_exit(void)
{
	proc_exit();

	device_destroy(capi_class, MKDEV(capi_major, 0));
	class_destroy(capi_class);
	unregister_chrdev(capi_major, "capi20");

	capinc_tty_exit();
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
21
53.85%
4
50.00%
Marcel Holtmann
13
33.33%
1
12.50%
Greg Kroah-Hartman
4
10.26%
2
25.00%
Tony Jones
1
2.56%
1
12.50%
Total
39
100.00%
8
100.00%


module_init(capi_init);

module_exit(capi_exit);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
3820
57.40%
13
11.82%
Jan Kiszka
1365
20.51%
25
22.73%
Kai Germaschewski
221
3.32%
11
10.00%
Linus Torvalds
213
3.20%
10
9.09%
Al Viro
164
2.46%
3
2.73%
Michael Büsch
145
2.18%
2
1.82%
Alexey Dobriyan
141
2.12%
1
0.91%
Marcel Holtmann
90
1.35%
3
2.73%
Jiri Slaby
87
1.31%
5
4.55%
Alan Cox
70
1.05%
7
6.36%
Armin Schindler
64
0.96%
3
2.73%
Arnd Bergmann
56
0.84%
2
1.82%
Karsten Keil
50
0.75%
2
1.82%
Tilman Schmidt
46
0.69%
2
1.82%
Arnaldo Carvalho de Melo
30
0.45%
1
0.91%
David S. Miller
24
0.36%
1
0.91%
Greg Kroah-Hartman
16
0.24%
5
4.55%
Andrew Morton
15
0.23%
2
1.82%
Matthias Kaehlcke
10
0.15%
1
0.91%
Jonathan Corbet
7
0.11%
1
0.91%
Thomas Gleixner
6
0.09%
1
0.91%
Adrian Bunk
4
0.06%
1
0.91%
Tony Jones
2
0.03%
1
0.91%
Paul Bolle
2
0.03%
1
0.91%
Burman Yan
2
0.03%
1
0.91%
Julia Lawall
1
0.02%
1
0.91%
Paul Mackerras
1
0.02%
1
0.91%
Arjan van de Ven
1
0.02%
1
0.91%
Jeff Dike
1
0.02%
1
0.91%
Harvey Harrison
1
0.02%
1
0.91%
Total
6655
100.00%
110
100.00%
Directory: drivers/isdn/capi

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