1441 lines
32 KiB
C
1441 lines
32 KiB
C
/* $Id: capi.c,v 1.1.2.7 2004/04/28 09:48:59 armin Exp $
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*
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* CAPI 2.0 Interface for Linux
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*
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* Copyright 1996 by Carsten Paeth <calle@calle.de>
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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*/
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#include <linux/compiler.h>
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#include <linux/module.h>
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#include <linux/ethtool.h>
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#include <linux/errno.h>
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#include <linux/kernel.h>
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#include <linux/major.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/fcntl.h>
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#include <linux/fs.h>
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#include <linux/signal.h>
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#include <linux/mutex.h>
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#include <linux/mm.h>
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#include <linux/timer.h>
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#include <linux/wait.h>
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#include <linux/tty.h>
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#include <linux/netdevice.h>
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#include <linux/ppp_defs.h>
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#include <linux/ppp-ioctl.h>
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#include <linux/skbuff.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/poll.h>
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#include <linux/capi.h>
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#include <linux/kernelcapi.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/moduleparam.h>
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#include <linux/isdn/capiutil.h>
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#include <linux/isdn/capicmd.h>
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#include "kcapi.h"
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MODULE_DESCRIPTION("CAPI4Linux: kernel CAPI layer and /dev/capi20 interface");
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MODULE_AUTHOR("Carsten Paeth");
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MODULE_LICENSE("GPL");
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/* -------- driver information -------------------------------------- */
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static DEFINE_MUTEX(capi_mutex);
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static struct class *capi_class;
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static int capi_major = 68; /* allocated */
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module_param_named(major, capi_major, uint, 0);
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#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
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#define CAPINC_NR_PORTS 32
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#define CAPINC_MAX_PORTS 256
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static int capi_ttyminors = CAPINC_NR_PORTS;
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module_param_named(ttyminors, capi_ttyminors, uint, 0);
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#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
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/* -------- defines ------------------------------------------------- */
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#define CAPINC_MAX_RECVQUEUE 10
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#define CAPINC_MAX_SENDQUEUE 10
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#define CAPI_MAX_BLKSIZE 2048
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/* -------- data structures ----------------------------------------- */
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struct capidev;
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struct capincci;
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struct capiminor;
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struct ackqueue_entry {
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struct list_head list;
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u16 datahandle;
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};
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struct capiminor {
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unsigned int minor;
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struct capi20_appl *ap;
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u32 ncci;
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atomic_t datahandle;
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atomic_t msgid;
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struct tty_port port;
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int ttyinstop;
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int ttyoutstop;
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struct sk_buff_head inqueue;
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struct sk_buff_head outqueue;
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int outbytes;
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struct sk_buff *outskb;
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spinlock_t outlock;
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/* transmit path */
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struct list_head ackqueue;
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int nack;
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spinlock_t ackqlock;
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};
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struct capincci {
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struct list_head list;
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u32 ncci;
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struct capidev *cdev;
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#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
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struct capiminor *minorp;
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#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
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};
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struct capidev {
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struct list_head list;
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struct capi20_appl ap;
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u16 errcode;
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unsigned userflags;
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struct sk_buff_head recvqueue;
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wait_queue_head_t recvwait;
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struct list_head nccis;
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struct mutex lock;
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};
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/* -------- global variables ---------------------------------------- */
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static DEFINE_MUTEX(capidev_list_lock);
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static LIST_HEAD(capidev_list);
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#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
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static DEFINE_SPINLOCK(capiminors_lock);
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static struct capiminor **capiminors;
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static struct tty_driver *capinc_tty_driver;
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/* -------- datahandles --------------------------------------------- */
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static int capiminor_add_ack(struct capiminor *mp, u16 datahandle)
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{
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struct ackqueue_entry *n;
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n = kmalloc(sizeof(*n), GFP_ATOMIC);
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if (unlikely(!n)) {
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printk(KERN_ERR "capi: alloc datahandle failed\n");
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return -1;
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}
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n->datahandle = datahandle;
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INIT_LIST_HEAD(&n->list);
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spin_lock_bh(&mp->ackqlock);
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list_add_tail(&n->list, &mp->ackqueue);
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mp->nack++;
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spin_unlock_bh(&mp->ackqlock);
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return 0;
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}
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static int capiminor_del_ack(struct capiminor *mp, u16 datahandle)
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{
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struct ackqueue_entry *p, *tmp;
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spin_lock_bh(&mp->ackqlock);
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list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) {
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if (p->datahandle == datahandle) {
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list_del(&p->list);
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mp->nack--;
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spin_unlock_bh(&mp->ackqlock);
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kfree(p);
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return 0;
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}
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}
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spin_unlock_bh(&mp->ackqlock);
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return -1;
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}
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static void capiminor_del_all_ack(struct capiminor *mp)
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{
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struct ackqueue_entry *p, *tmp;
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list_for_each_entry_safe(p, tmp, &mp->ackqueue, list) {
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list_del(&p->list);
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kfree(p);
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mp->nack--;
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}
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}
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/* -------- struct capiminor ---------------------------------------- */
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static void capiminor_destroy(struct tty_port *port)
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{
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struct capiminor *mp = container_of(port, struct capiminor, port);
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kfree_skb(mp->outskb);
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skb_queue_purge(&mp->inqueue);
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skb_queue_purge(&mp->outqueue);
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capiminor_del_all_ack(mp);
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kfree(mp);
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}
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static const struct tty_port_operations capiminor_port_ops = {
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.destruct = capiminor_destroy,
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};
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static struct capiminor *capiminor_alloc(struct capi20_appl *ap, u32 ncci)
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{
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struct capiminor *mp;
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struct device *dev;
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unsigned int minor;
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mp = kzalloc(sizeof(*mp), GFP_KERNEL);
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if (!mp) {
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printk(KERN_ERR "capi: can't alloc capiminor\n");
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return NULL;
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}
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mp->ap = ap;
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mp->ncci = ncci;
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INIT_LIST_HEAD(&mp->ackqueue);
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spin_lock_init(&mp->ackqlock);
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skb_queue_head_init(&mp->inqueue);
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skb_queue_head_init(&mp->outqueue);
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spin_lock_init(&mp->outlock);
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tty_port_init(&mp->port);
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mp->port.ops = &capiminor_port_ops;
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/* Allocate the least unused minor number. */
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spin_lock(&capiminors_lock);
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for (minor = 0; minor < capi_ttyminors; minor++)
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if (!capiminors[minor]) {
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capiminors[minor] = mp;
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break;
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}
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spin_unlock(&capiminors_lock);
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if (minor == capi_ttyminors) {
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printk(KERN_NOTICE "capi: out of minors\n");
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goto err_out1;
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}
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mp->minor = minor;
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dev = tty_port_register_device(&mp->port, capinc_tty_driver, minor,
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NULL);
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if (IS_ERR(dev))
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goto err_out2;
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return mp;
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err_out2:
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spin_lock(&capiminors_lock);
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capiminors[minor] = NULL;
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spin_unlock(&capiminors_lock);
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err_out1:
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tty_port_put(&mp->port);
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return NULL;
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}
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static struct capiminor *capiminor_get(unsigned int minor)
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{
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struct capiminor *mp;
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spin_lock(&capiminors_lock);
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mp = capiminors[minor];
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if (mp)
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tty_port_get(&mp->port);
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spin_unlock(&capiminors_lock);
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return mp;
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}
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static inline void capiminor_put(struct capiminor *mp)
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{
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tty_port_put(&mp->port);
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}
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static void capiminor_free(struct capiminor *mp)
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{
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tty_unregister_device(capinc_tty_driver, mp->minor);
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spin_lock(&capiminors_lock);
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capiminors[mp->minor] = NULL;
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spin_unlock(&capiminors_lock);
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capiminor_put(mp);
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}
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/* -------- struct capincci ----------------------------------------- */
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static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np)
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{
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if (cdev->userflags & CAPIFLAG_HIGHJACKING)
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np->minorp = capiminor_alloc(&cdev->ap, np->ncci);
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}
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static void capincci_free_minor(struct capincci *np)
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{
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struct capiminor *mp = np->minorp;
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struct tty_struct *tty;
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if (mp) {
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tty = tty_port_tty_get(&mp->port);
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if (tty) {
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tty_vhangup(tty);
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tty_kref_put(tty);
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}
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capiminor_free(mp);
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}
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}
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static inline unsigned int capincci_minor_opencount(struct capincci *np)
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{
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struct capiminor *mp = np->minorp;
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unsigned int count = 0;
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struct tty_struct *tty;
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if (mp) {
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tty = tty_port_tty_get(&mp->port);
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if (tty) {
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count = tty->count;
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tty_kref_put(tty);
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}
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}
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return count;
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}
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#else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */
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static inline void
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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 */
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static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci)
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{
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struct capincci *np;
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np = kzalloc(sizeof(*np), GFP_KERNEL);
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if (!np)
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return NULL;
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np->ncci = ncci;
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np->cdev = cdev;
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capincci_alloc_minor(cdev, np);
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list_add_tail(&np->list, &cdev->nccis);
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return np;
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}
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static void capincci_free(struct capidev *cdev, u32 ncci)
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{
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struct capincci *np, *tmp;
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list_for_each_entry_safe(np, tmp, &cdev->nccis, list)
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if (ncci == 0xffffffff || np->ncci == ncci) {
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capincci_free_minor(np);
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list_del(&np->list);
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kfree(np);
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}
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}
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#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
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static struct capincci *capincci_find(struct capidev *cdev, u32 ncci)
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{
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struct capincci *np;
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list_for_each_entry(np, &cdev->nccis, list)
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if (np->ncci == ncci)
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return np;
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return NULL;
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}
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/* -------- handle data queue --------------------------------------- */
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static struct sk_buff *
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gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb)
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{
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struct sk_buff *nskb;
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nskb = alloc_skb(CAPI_DATA_B3_RESP_LEN, GFP_KERNEL);
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if (nskb) {
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u16 datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4 + 4 + 2);
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unsigned char *s = skb_put(nskb, CAPI_DATA_B3_RESP_LEN);
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capimsg_setu16(s, 0, CAPI_DATA_B3_RESP_LEN);
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capimsg_setu16(s, 2, mp->ap->applid);
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capimsg_setu8 (s, 4, CAPI_DATA_B3);
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capimsg_setu8 (s, 5, CAPI_RESP);
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capimsg_setu16(s, 6, atomic_inc_return(&mp->msgid));
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capimsg_setu32(s, 8, mp->ncci);
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capimsg_setu16(s, 12, datahandle);
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}
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return nskb;
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}
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static int handle_recv_skb(struct capiminor *mp, struct sk_buff *skb)
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{
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unsigned int datalen = skb->len - CAPIMSG_LEN(skb->data);
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struct tty_struct *tty;
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struct sk_buff *nskb;
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u16 errcode, datahandle;
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struct tty_ldisc *ld;
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int ret = -1;
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tty = tty_port_tty_get(&mp->port);
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if (!tty) {
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pr_debug("capi: currently no receiver\n");
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return -1;
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}
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ld = tty_ldisc_ref(tty);
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if (!ld) {
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/* fatal error, do not requeue */
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ret = 0;
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kfree_skb(skb);
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goto deref_tty;
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}
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if (ld->ops->receive_buf == NULL) {
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pr_debug("capi: ldisc has no receive_buf function\n");
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/* fatal error, do not requeue */
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goto free_skb;
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}
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if (mp->ttyinstop) {
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pr_debug("capi: recv tty throttled\n");
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goto deref_ldisc;
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}
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if (tty->receive_room < datalen) {
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pr_debug("capi: no room in tty\n");
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goto deref_ldisc;
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}
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nskb = gen_data_b3_resp_for(mp, skb);
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if (!nskb) {
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printk(KERN_ERR "capi: gen_data_b3_resp failed\n");
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goto deref_ldisc;
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}
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datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN + 4);
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errcode = capi20_put_message(mp->ap, nskb);
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if (errcode == CAPI_NOERROR) {
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skb_pull(skb, CAPIMSG_LEN(skb->data));
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pr_debug("capi: DATA_B3_RESP %u len=%d => ldisc\n",
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datahandle, skb->len);
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ld->ops->receive_buf(tty, skb->data, NULL, skb->len);
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} else {
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printk(KERN_ERR "capi: send DATA_B3_RESP failed=%x\n",
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errcode);
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kfree_skb(nskb);
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if (errcode == CAPI_SENDQUEUEFULL)
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goto deref_ldisc;
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}
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free_skb:
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ret = 0;
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kfree_skb(skb);
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deref_ldisc:
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tty_ldisc_deref(ld);
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deref_tty:
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tty_kref_put(tty);
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return ret;
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}
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static void handle_minor_recv(struct capiminor *mp)
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{
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struct sk_buff *skb;
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while ((skb = skb_dequeue(&mp->inqueue)) != NULL)
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if (handle_recv_skb(mp, skb) < 0) {
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skb_queue_head(&mp->inqueue, skb);
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return;
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}
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}
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static void handle_minor_send(struct capiminor *mp)
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{
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struct tty_struct *tty;
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struct sk_buff *skb;
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u16 len;
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u16 errcode;
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u16 datahandle;
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tty = tty_port_tty_get(&mp->port);
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if (!tty)
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return;
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if (mp->ttyoutstop) {
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pr_debug("capi: send: tty stopped\n");
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tty_kref_put(tty);
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return;
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}
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while (1) {
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spin_lock_bh(&mp->outlock);
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skb = __skb_dequeue(&mp->outqueue);
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if (!skb) {
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spin_unlock_bh(&mp->outlock);
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break;
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}
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len = (u16)skb->len;
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mp->outbytes -= len;
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spin_unlock_bh(&mp->outlock);
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datahandle = atomic_inc_return(&mp->datahandle);
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skb_push(skb, CAPI_DATA_B3_REQ_LEN);
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memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN);
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capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN);
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capimsg_setu16(skb->data, 2, mp->ap->applid);
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capimsg_setu8 (skb->data, 4, CAPI_DATA_B3);
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capimsg_setu8 (skb->data, 5, CAPI_REQ);
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capimsg_setu16(skb->data, 6, atomic_inc_return(&mp->msgid));
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capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */
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capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */
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capimsg_setu16(skb->data, 16, len); /* Data length */
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capimsg_setu16(skb->data, 18, datahandle);
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capimsg_setu16(skb->data, 20, 0); /* Flags */
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|
|
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);
|
|
}
|
|
|
|
#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);
|
|
}
|
|
|
|
/* -------- 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;
|
|
}
|
|
|
|
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;
|
|
|
|
if (count < CAPIMSG_BASELEN)
|
|
return -EINVAL;
|
|
|
|
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 (count < CAPI_DATA_B3_REQ_LEN ||
|
|
(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) {
|
|
if (count < CAPI_DISCONNECT_B3_RESP_LEN) {
|
|
kfree_skb(skb);
|
|
return -EINVAL;
|
|
}
|
|
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;
|
|
}
|
|
|
|
static __poll_t
|
|
capi_poll(struct file *file, poll_table *wait)
|
|
{
|
|
struct capidev *cdev = file->private_data;
|
|
__poll_t mask = 0;
|
|
|
|
if (!cdev->ap.applid)
|
|
return EPOLLERR;
|
|
|
|
poll_wait(file, &(cdev->recvwait), wait);
|
|
mask = EPOLLOUT | EPOLLWRNORM;
|
|
if (!skb_queue_empty_lockless(&cdev->recvqueue))
|
|
mask |= EPOLLIN | EPOLLRDNORM;
|
|
return mask;
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
static long
|
|
capi_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
|
{
|
|
int ret;
|
|
|
|
if (cmd == CAPI_MANUFACTURER_CMD) {
|
|
struct {
|
|
compat_ulong_t cmd;
|
|
compat_uptr_t data;
|
|
} mcmd32;
|
|
|
|
if (!capable(CAP_SYS_ADMIN))
|
|
return -EPERM;
|
|
if (copy_from_user(&mcmd32, compat_ptr(arg), sizeof(mcmd32)))
|
|
return -EFAULT;
|
|
|
|
mutex_lock(&capi_mutex);
|
|
ret = capi20_manufacturer(mcmd32.cmd, compat_ptr(mcmd32.data));
|
|
mutex_unlock(&capi_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
return capi_unlocked_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
|
|
}
|
|
#endif
|
|
|
|
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 stream_open(inode, file);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl = capi_compat_ioctl,
|
|
#endif
|
|
.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;
|
|
}
|
|
|
|
static void capinc_tty_cleanup(struct tty_struct *tty)
|
|
{
|
|
struct capiminor *mp = tty->driver_data;
|
|
tty->driver_data = NULL;
|
|
capiminor_put(mp);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
skb_put_data(skb, buf, count);
|
|
|
|
__skb_queue_tail(&mp->outqueue, skb);
|
|
mp->outbytes += skb->len;
|
|
spin_unlock_bh(&mp->outlock);
|
|
|
|
handle_minor_send(mp);
|
|
|
|
return count;
|
|
}
|
|
|
|
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_u8(skb, 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_u8(skb, 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;
|
|
}
|
|
|
|
static void capinc_tty_flush_chars(struct tty_struct *tty)
|
|
{
|
|
struct capiminor *mp = tty->driver_data;
|
|
struct sk_buff *skb;
|
|
|
|
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);
|
|
}
|
|
|
|
static unsigned int capinc_tty_write_room(struct tty_struct *tty)
|
|
{
|
|
struct capiminor *mp = tty->driver_data;
|
|
unsigned int room;
|
|
|
|
room = CAPINC_MAX_SENDQUEUE-skb_queue_len(&mp->outqueue);
|
|
room *= CAPI_MAX_BLKSIZE;
|
|
pr_debug("capinc_tty_write_room = %u\n", room);
|
|
return room;
|
|
}
|
|
|
|
static unsigned 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;
|
|
}
|
|
|
|
static void capinc_tty_throttle(struct tty_struct *tty)
|
|
{
|
|
struct capiminor *mp = tty->driver_data;
|
|
mp->ttyinstop = 1;
|
|
}
|
|
|
|
static void capinc_tty_unthrottle(struct tty_struct *tty)
|
|
{
|
|
struct capiminor *mp = tty->driver_data;
|
|
|
|
mp->ttyinstop = 0;
|
|
handle_minor_recv(mp);
|
|
}
|
|
|
|
static void capinc_tty_stop(struct tty_struct *tty)
|
|
{
|
|
struct capiminor *mp = tty->driver_data;
|
|
|
|
mp->ttyoutstop = 1;
|
|
}
|
|
|
|
static void capinc_tty_start(struct tty_struct *tty)
|
|
{
|
|
struct capiminor *mp = tty->driver_data;
|
|
|
|
mp->ttyoutstop = 0;
|
|
handle_minor_send(mp);
|
|
}
|
|
|
|
static void capinc_tty_hangup(struct tty_struct *tty)
|
|
{
|
|
struct capiminor *mp = tty->driver_data;
|
|
|
|
tty_port_hangup(&mp->port);
|
|
}
|
|
|
|
static void capinc_tty_send_xchar(struct tty_struct *tty, char ch)
|
|
{
|
|
pr_debug("capinc_tty_send_xchar(%d)\n", ch);
|
|
}
|
|
|
|
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,
|
|
.throttle = capinc_tty_throttle,
|
|
.unthrottle = capinc_tty_unthrottle,
|
|
.stop = capinc_tty_stop,
|
|
.start = capinc_tty_start,
|
|
.hangup = capinc_tty_hangup,
|
|
.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 = kcalloc(capi_ttyminors, sizeof(struct capiminor *),
|
|
GFP_KERNEL);
|
|
if (!capiminors)
|
|
return -ENOMEM;
|
|
|
|
drv = tty_alloc_driver(capi_ttyminors, TTY_DRIVER_REAL_RAW |
|
|
TTY_DRIVER_RESET_TERMIOS | TTY_DRIVER_DYNAMIC_DEV);
|
|
if (IS_ERR(drv)) {
|
|
kfree(capiminors);
|
|
return PTR_ERR(drv);
|
|
}
|
|
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;
|
|
tty_set_operations(drv, &capinc_ops);
|
|
|
|
err = tty_register_driver(drv);
|
|
if (err) {
|
|
tty_driver_kref_put(drv);
|
|
kfree(capiminors);
|
|
printk(KERN_ERR "Couldn't register capi_nc driver\n");
|
|
return err;
|
|
}
|
|
capinc_tty_driver = drv;
|
|
return 0;
|
|
}
|
|
|
|
static void __exit capinc_tty_exit(void)
|
|
{
|
|
tty_unregister_driver(capinc_tty_driver);
|
|
tty_driver_kref_put(capinc_tty_driver);
|
|
kfree(capiminors);
|
|
}
|
|
|
|
#else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */
|
|
|
|
static inline int capinc_tty_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void capinc_tty_exit(void) { }
|
|
|
|
#endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */
|
|
|
|
/* -------- /proc functions ----------------------------------------- */
|
|
|
|
/*
|
|
* /proc/capi/capi20:
|
|
* minor applid nrecvctlpkt nrecvdatapkt nsendctlpkt nsenddatapkt
|
|
*/
|
|
static int __maybe_unused 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;
|
|
}
|
|
|
|
/*
|
|
* /proc/capi/capi20ncci:
|
|
* applid ncci
|
|
*/
|
|
static int __maybe_unused 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;
|
|
}
|
|
|
|
static void __init proc_init(void)
|
|
{
|
|
proc_create_single("capi/capi20", 0, NULL, capi20_proc_show);
|
|
proc_create_single("capi/capi20ncci", 0, NULL, capi20ncci_proc_show);
|
|
}
|
|
|
|
static void __exit proc_exit(void)
|
|
{
|
|
remove_proc_entry("capi/capi20", NULL);
|
|
remove_proc_entry("capi/capi20ncci", NULL);
|
|
}
|
|
|
|
/* -------- init function and module interface ---------------------- */
|
|
|
|
|
|
static int __init capi_init(void)
|
|
{
|
|
const char *compileinfo;
|
|
int major_ret;
|
|
int ret;
|
|
|
|
ret = kcapi_init();
|
|
if (ret)
|
|
return 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);
|
|
kcapi_exit();
|
|
return major_ret;
|
|
}
|
|
capi_class = class_create(THIS_MODULE, "capi");
|
|
if (IS_ERR(capi_class)) {
|
|
unregister_chrdev(capi_major, "capi20");
|
|
kcapi_exit();
|
|
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");
|
|
kcapi_exit();
|
|
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;
|
|
}
|
|
|
|
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();
|
|
|
|
kcapi_exit();
|
|
}
|
|
|
|
module_init(capi_init);
|
|
module_exit(capi_exit);
|