#include <linux/smp_lock.h>
#include <linux/timer.h>
#include <linux/wait.h>
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
#include <linux/tty.h>
-#ifdef CONFIG_PPP
#include <linux/netdevice.h>
#include <linux/ppp_defs.h>
#include <linux/if_ppp.h>
-#endif /* CONFIG_PPP */
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
#include <linux/skbuff.h>
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include <linux/poll.h>
#include <linux/capi.h>
#include <linux/kernelcapi.h>
#include <linux/moduleparam.h>
#include <linux/isdn/capiutil.h>
#include <linux/isdn/capicmd.h>
-#if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
-#include "capifs.h"
-#endif
-static char *revision = "$Revision: 1.1.2.7 $";
+#include "capifs.h"
MODULE_DESCRIPTION("CAPI4Linux: Userspace /dev/capi20 interface");
MODULE_AUTHOR("Carsten Paeth");
/* -------- driver information -------------------------------------- */
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_NR_PORTS 32
#define CAPINC_MAX_PORTS 256
+
static int capi_ttymajor = 191;
static int capi_ttyminors = CAPINC_NR_PORTS;
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
-module_param_named(major, capi_major, uint, 0);
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
module_param_named(ttymajor, capi_ttymajor, uint, 0);
module_param_named(ttyminors, capi_ttyminors, uint, 0);
#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
struct capidev;
struct capincci;
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
struct capiminor;
struct datahandle_queue {
struct list_head list;
struct capincci *nccip;
unsigned int minor;
+ struct dentry *capifs_dentry;
struct capi20_appl *ap;
u32 ncci;
int nack;
spinlock_t ackqlock;
};
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
/* FIXME: The following lock is a sledgehammer-workaround to a
* locking issue with the capiminor (and maybe other) data structure(s).
/* -------- global variables ---------------------------------------- */
-static DEFINE_RWLOCK(capidev_list_lock);
+static DEFINE_MUTEX(capidev_list_lock);
static LIST_HEAD(capidev_list);
#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
+
static DEFINE_RWLOCK(capiminor_list_lock);
static LIST_HEAD(capiminor_list);
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
/* -------- datahandles --------------------------------------------- */
-static int capincci_add_ack(struct capiminor *mp, u16 datahandle)
+static int capiminor_add_ack(struct capiminor *mp, u16 datahandle)
{
struct datahandle_queue *n;
unsigned long flags;
return p;
}
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
/* -------- struct capincci ----------------------------------------- */
-static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci)
+static void capincci_alloc_minor(struct capidev *cdev, struct capincci *np)
{
- struct capincci *np, **pp;
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
- struct capiminor *mp = NULL;
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+ struct capiminor *mp;
- np = kzalloc(sizeof(*np), GFP_ATOMIC);
- if (!np)
- return NULL;
- np->ncci = ncci;
- np->cdev = cdev;
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
- mp = NULL;
- if (cdev->userflags & CAPIFLAG_HIGHJACKING)
- mp = np->minorp = capiminor_alloc(&cdev->ap, ncci);
+ if (!(cdev->userflags & CAPIFLAG_HIGHJACKING))
+ return;
+
+ mp = np->minorp = capiminor_alloc(&cdev->ap, np->ncci);
if (mp) {
mp->nccip = np;
#ifdef _DEBUG_REFCOUNT
printk(KERN_DEBUG "set mp->nccip\n");
#endif
-#if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
- capifs_new_ncci(mp->minor, MKDEV(capi_ttymajor, mp->minor));
+ mp->capifs_dentry =
+ capifs_new_ncci(mp->minor,
+ MKDEV(capi_ttymajor, mp->minor));
+ }
+}
+
+static void capincci_free_minor(struct capincci *np)
+{
+ struct capiminor *mp = np->minorp;
+
+ if (mp) {
+ capifs_free_ncci(mp->capifs_dentry);
+ if (mp->tty) {
+ mp->nccip = NULL;
+#ifdef _DEBUG_REFCOUNT
+ printk(KERN_DEBUG "reset mp->nccip\n");
#endif
+ tty_hangup(mp->tty);
+ } else {
+ capiminor_free(mp);
+ }
}
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+}
+
+static inline unsigned int capincci_minor_opencount(struct capincci *np)
+{
+ struct capiminor *mp = np->minorp;
+
+ return mp ? atomic_read(&mp->ttyopencount) : 0;
+}
+
+#else /* !CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+static inline void
+capincci_alloc_minor(struct capidev *cdev, struct capincci *np) { }
+static inline void capincci_free_minor(struct capincci *np) { }
+
+static inline unsigned int capincci_minor_opencount(struct capincci *np)
+{
+ return 0;
+}
+
+#endif /* !CONFIG_ISDN_CAPI_MIDDLEWARE */
+
+static struct capincci *capincci_alloc(struct capidev *cdev, u32 ncci)
+{
+ struct capincci *np, **pp;
+
+ np = kzalloc(sizeof(*np), GFP_ATOMIC);
+ if (!np)
+ return NULL;
+ np->ncci = ncci;
+ np->cdev = cdev;
+
+ capincci_alloc_minor(cdev, np);
+
for (pp=&cdev->nccis; *pp; pp = &(*pp)->next)
;
*pp = np;
static void capincci_free(struct capidev *cdev, u32 ncci)
{
struct capincci *np, **pp;
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
- struct capiminor *mp;
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
pp=&cdev->nccis;
while (*pp) {
np = *pp;
if (ncci == 0xffffffff || np->ncci == ncci) {
*pp = (*pp)->next;
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
- if ((mp = np->minorp) != NULL) {
-#if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
- capifs_free_ncci(mp->minor);
-#endif
- if (mp->tty) {
- mp->nccip = NULL;
-#ifdef _DEBUG_REFCOUNT
- printk(KERN_DEBUG "reset mp->nccip\n");
-#endif
- tty_hangup(mp->tty);
- } else {
- capiminor_free(mp);
- }
- }
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+ capincci_free_minor(np);
kfree(np);
if (*pp == NULL) return;
} else {
static struct capidev *capidev_alloc(void)
{
struct capidev *cdev;
- unsigned long flags;
cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
if (!cdev)
mutex_init(&cdev->ncci_list_mtx);
skb_queue_head_init(&cdev->recvqueue);
init_waitqueue_head(&cdev->recvwait);
- write_lock_irqsave(&capidev_list_lock, flags);
+
+ mutex_lock(&capidev_list_lock);
list_add_tail(&cdev->list, &capidev_list);
- write_unlock_irqrestore(&capidev_list_lock, flags);
+ mutex_unlock(&capidev_list_lock);
+
return cdev;
}
static void capidev_free(struct capidev *cdev)
{
- unsigned long flags;
+ mutex_lock(&capidev_list_lock);
+ list_del(&cdev->list);
+ mutex_unlock(&capidev_list_lock);
if (cdev->ap.applid) {
capi20_release(&cdev->ap);
capincci_free(cdev, 0xffffffff);
mutex_unlock(&cdev->ncci_list_mtx);
- write_lock_irqsave(&capidev_list_lock, flags);
- list_del(&cdev->list);
- write_unlock_irqrestore(&capidev_list_lock, flags);
kfree(cdev);
}
capimsg_setu16(skb->data, 18, datahandle);
capimsg_setu16(skb->data, 20, 0); /* Flags */
- if (capincci_add_ack(mp, datahandle) < 0) {
+ if (capiminor_add_ack(mp, datahandle) < 0) {
skb_pull(skb, CAPI_DATA_B3_REQ_LEN);
skb_queue_head(&mp->outqueue, skb);
return count;
spin_unlock_irqrestore(&workaround_lock, flags);
return;
}
+
#ifndef CONFIG_ISDN_CAPI_MIDDLEWARE
skb_queue_tail(&cdev->recvqueue, skb);
wake_up_interruptible(&cdev->recvwait);
+
#else /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
mp = np->minorp;
if (!mp) {
skb_queue_tail(&cdev->recvqueue, skb);
spin_unlock_irqrestore(&workaround_lock, flags);
return;
}
-
-
if (CAPIMSG_SUBCOMMAND(skb->data) == CAPI_IND) {
-
datahandle = CAPIMSG_U16(skb->data, CAPIMSG_BASELEN+4+4+2);
#ifdef _DEBUG_DATAFLOW
printk(KERN_DEBUG "capi_signal: DATA_B3_IND %u len=%d\n",
wake_up_interruptible(&cdev->recvwait);
}
#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+
spin_unlock_irqrestore(&workaround_lock, flags);
}
case CAPI_NCCI_OPENCOUNT:
{
struct capincci *nccip;
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
- struct capiminor *mp;
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
unsigned ncci;
int count = 0;
if (copy_from_user(&ncci, argp, sizeof(ncci)))
mutex_unlock(&cdev->ncci_list_mtx);
return 0;
}
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
- if ((mp = nccip->minorp) != NULL) {
- count += atomic_read(&mp->ttyopencount);
- }
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+ count += capincci_minor_opencount(nccip);
mutex_unlock(&cdev->ncci_list_mtx);
return count;
}
put_tty_driver(drv);
}
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
+#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 proc_capidev_read_proc(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+static int capi20_proc_show(struct seq_file *m, void *v)
{
struct capidev *cdev;
struct list_head *l;
- int len = 0;
- read_lock(&capidev_list_lock);
+ mutex_lock(&capidev_list_lock);
list_for_each(l, &capidev_list) {
cdev = list_entry(l, struct capidev, list);
- len += sprintf(page+len, "0 %d %lu %lu %lu %lu\n",
+ 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);
- if (len <= off) {
- off -= len;
- len = 0;
- } else {
- if (len-off > count)
- goto endloop;
- }
}
+ mutex_unlock(&capidev_list_lock);
+ return 0;
+}
-endloop:
- read_unlock(&capidev_list_lock);
- if (len < count)
- *eof = 1;
- if (len > count) len = count;
- if (len < 0) len = 0;
- return len;
+static int capi20_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, capi20_proc_show, NULL);
}
+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 proc_capincci_read_proc(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+static int capi20ncci_proc_show(struct seq_file *m, void *v)
{
struct capidev *cdev;
struct capincci *np;
struct list_head *l;
- int len = 0;
- read_lock(&capidev_list_lock);
+ mutex_lock(&capidev_list_lock);
list_for_each(l, &capidev_list) {
cdev = list_entry(l, struct capidev, list);
for (np=cdev->nccis; np; np = np->next) {
- len += sprintf(page+len, "%d 0x%x\n",
+ seq_printf(m, "%d 0x%x\n",
cdev->ap.applid,
np->ncci);
- if (len <= off) {
- off -= len;
- len = 0;
- } else {
- if (len-off > count)
- goto endloop;
- }
}
}
-endloop:
- read_unlock(&capidev_list_lock);
- *start = page+off;
- if (len < count)
- *eof = 1;
- if (len>count) len = count;
- if (len<0) len = 0;
- return len;
+ mutex_unlock(&capidev_list_lock);
+ return 0;
+}
+
+static int capi20ncci_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, capi20ncci_proc_show, NULL);
}
-static struct procfsentries {
- char *name;
- mode_t mode;
- int (*read_proc)(char *page, char **start, off_t off,
- int count, int *eof, void *data);
- struct proc_dir_entry *procent;
-} procfsentries[] = {
- /* { "capi", S_IFDIR, 0 }, */
- { "capi/capi20", 0 , proc_capidev_read_proc },
- { "capi/capi20ncci", 0 , proc_capincci_read_proc },
+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)
{
- int nelem = ARRAY_SIZE(procfsentries);
- int i;
-
- for (i=0; i < nelem; i++) {
- struct procfsentries *p = procfsentries + i;
- p->procent = create_proc_entry(p->name, p->mode, NULL);
- if (p->procent) p->procent->read_proc = p->read_proc;
- }
+ proc_create("capi/capi20", 0, NULL, &capi20_proc_fops);
+ proc_create("capi/capi20ncci", 0, NULL, &capi20ncci_proc_fops);
}
static void __exit proc_exit(void)
{
- int nelem = ARRAY_SIZE(procfsentries);
- int i;
-
- for (i=nelem-1; i >= 0; i--) {
- struct procfsentries *p = procfsentries + i;
- if (p->procent) {
- remove_proc_entry(p->name, NULL);
- p->procent = NULL;
- }
- }
+ remove_proc_entry("capi/capi20", NULL);
+ remove_proc_entry("capi/capi20ncci", NULL);
}
/* -------- init function and module interface ---------------------- */
-static char rev[32];
-
static int __init capi_init(void)
{
- char *p;
- char *compileinfo;
+ const char *compileinfo;
int major_ret;
- if ((p = strchr(revision, ':')) != NULL && p[1]) {
- strlcpy(rev, p + 2, sizeof(rev));
- if ((p = strchr(rev, '$')) != NULL && p > rev)
- *(p-1) = 0;
- } else
- strcpy(rev, "1.0");
-
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);
device_create(capi_class, NULL, MKDEV(capi_major, 0), NULL, "capi");
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
if (capinc_tty_init() < 0) {
device_destroy(capi_class, MKDEV(capi_major, 0));
class_destroy(capi_class);
unregister_chrdev(capi_major, "capi20");
return -ENOMEM;
}
-#endif /* CONFIG_ISDN_CAPI_MIDDLEWARE */
proc_init();
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
#if defined(CONFIG_ISDN_CAPI_CAPIFS) || defined(CONFIG_ISDN_CAPI_CAPIFS_MODULE)
compileinfo = " (middleware+capifs)";
-#else
+#elif defined(CONFIG_ISDN_CAPI_MIDDLEWARE)
compileinfo = " (no capifs)";
-#endif
#else
compileinfo = " (no middleware)";
#endif
- printk(KERN_NOTICE "capi20: Rev %s: started up with major %d%s\n",
- rev, capi_major, compileinfo);
+ printk(KERN_NOTICE "CAPI 2.0 started up with major %d%s\n",
+ capi_major, compileinfo);
return 0;
}
class_destroy(capi_class);
unregister_chrdev(capi_major, "capi20");
-#ifdef CONFIG_ISDN_CAPI_MIDDLEWARE
capinc_tty_exit();
-#endif
- printk(KERN_NOTICE "capi: Rev %s: unloaded\n", rev);
}
module_init(capi_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff