ISDN/CAPI: Cleanup /proc/capi

o Move /proc handling to a file of its own 
o Use <linux/seq_file.h>

drivers/isdn/capi/Makefile

@@ -15,7 +15,9 @@ obj-$(CONFIG_ISDN_CAPI_CAPIFS)		+= capifs.o
 
 # Multipart objects.
 
-kernelcapi-objs	:= kcapi.o capiutil.o capilib.o
+kernelcapi-y				:= kcapi.o capiutil.o capilib.o
+kernelcapi-$(CONFIG_PROC_FS)		+= kcapi_proc.o
+kernelcapi-objs				:= $(kernelcapi-y)
 
 # The global Rules.make.
 

drivers/isdn/capi/kcapi.h

+/*
+ * Kernel CAPI 2.0 Module
+ * 
+ * Copyright 1999 by Carsten Paeth <calle@calle.de>
+ * Copyright 2002 by Kai Germaschewski <kai@germaschewski.name>
+ * 
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/isdn/capilli.h>
+
+#define DBG(format, arg...) do { \
+printk(KERN_INFO __FUNCTION__ ": " format "\n" , ## arg); \
+} while (0)
+
+
+enum {
+	CARD_DETECTED = 1,
+	CARD_LOADING  =	2,
+	CARD_RUNNING  = 3,
+};
+
+extern struct list_head capi_drivers;
+extern spinlock_t capi_drivers_lock;
+
+extern struct capi20_appl *capi_applications[CAPI_MAXAPPL];
+extern struct capi_ctr *capi_cards[CAPI_MAXCONTR];
+
+#ifdef CONFIG_PROC_FS
+
+void kcapi_proc_init(void);
+void kcapi_proc_exit(void);
+
+#else
+
+static inline void kcapi_proc_init(void) { };
+static inline void kcapi_proc_exit(void) { };
+
+#endif
+

drivers/isdn/capi/kcapi_proc.c

+/*
+ * Kernel CAPI 2.0 Module - /proc/capi handling
+ * 
+ * Copyright 1999 by Carsten Paeth <calle@calle.de>
+ * Copyright 2002 by Kai Germaschewski <kai@germaschewski.name>
+ * 
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+
+#include "kcapi.h"
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+
+
+static char *
+cardstate2str(unsigned short cardstate)
+{
+	switch (cardstate) {
+	case CARD_DETECTED:	return "detected";
+	case CARD_LOADING:	return "loading";
+	case CARD_RUNNING:	return "running";
+	default:	        return "???";
+	}
+}
+
+// /proc/capi
+// ===========================================================================
+
+// /proc/capi/driver:
+//      driver ncontroller
+// ---------------------------------------------------------------------------
+
+static int proc_driver_read_proc(char *page, char **start, off_t off,
+                                       int count, int *eof, void *data)
+{
+	struct list_head *l;
+	struct capi_driver *driver;
+	int len = 0;
+
+	spin_lock(&capi_drivers_lock);
+	list_for_each(l, &capi_drivers) {
+		driver = list_entry(l, struct capi_driver, driver_list);
+
+		len += sprintf(page+len, "%-32s %d %s\n",
+					driver->name,
+					driver->ncontroller,
+					driver->revision);
+		if (len <= off) {
+			off -= len;
+			len = 0;
+		} else {
+			if (len-off > count)
+				goto endloop;
+		}
+	}
+endloop:
+	spin_unlock(&capi_drivers_lock);
+	*start = page+off;
+	if (len < count)
+		*eof = 1;
+	if (len>count) len = count;
+	if (len<0) len = 0;
+	return len;
+}
+
+// /proc/capi/controller: 
+//      cnr driver cardstate name driverinfo
+// /proc/capi/contrstats:
+//      cnr nrecvctlpkt nrecvdatapkt nsentctlpkt nsentdatapkt
+// ---------------------------------------------------------------------------
+
+static void *controller_start(struct seq_file *seq, loff_t *pos)
+{
+	if (*pos < CAPI_MAXCONTR)
+		return &capi_cards[*pos];
+
+	return NULL;
+}
+
+static void *controller_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	++*pos;
+	if (*pos < CAPI_MAXCONTR)
+		return &capi_cards[*pos];
+
+	return NULL;
+}
+
+static void controller_stop(struct seq_file *seq, void *v)
+{
+}
+
+static int controller_show(struct seq_file *seq, void *v)
+{
+	struct capi_ctr *ctr = *(struct capi_ctr **) v;
+
+	if (!ctr)
+		return 0;
+
+	seq_printf(seq, "%d %-10s %-8s %-16s %s\n",
+		   ctr->cnr, ctr->driver->name, 
+		   cardstate2str(ctr->cardstate),
+		   ctr->name,
+		   ctr->driver->procinfo ?  ctr->driver->procinfo(ctr) : "");
+
+	return 0;
+}
+
+static int contrstats_show(struct seq_file *seq, void *v)
+{
+	struct capi_ctr *ctr = *(struct capi_ctr **) v;
+
+	if (!ctr)
+		return 0;
+
+	seq_printf(seq, "%d %lu %lu %lu %lu\n",
+		   ctr->cnr, 
+		   ctr->nrecvctlpkt,
+		   ctr->nrecvdatapkt,
+		   ctr->nsentctlpkt,
+		   ctr->nsentdatapkt);
+
+	return 0;
+}
+
+struct seq_operations seq_controller_ops = {
+	start:	controller_start,
+	next:	controller_next,
+	stop:	controller_stop,
+	show:	controller_show,
+};
+
+struct seq_operations seq_contrstats_ops = {
+	start:	controller_start,
+	next:	controller_next,
+	stop:	controller_stop,
+	show:	contrstats_show,
+};
+
+static int seq_controller_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &seq_controller_ops);
+}
+
+static int seq_contrstats_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &seq_contrstats_ops);
+}
+
+static struct file_operations proc_controller_ops = {
+	open:		seq_controller_open,
+	read:		seq_read,
+	llseek:		seq_lseek,
+	release:	seq_release,
+};
+
+static struct file_operations proc_contrstats_ops = {
+	open:		seq_contrstats_open,
+	read:		seq_read,
+	llseek:		seq_lseek,
+	release:	seq_release,
+};
+
+// /proc/capi/applications: 
+//      applid l3cnt dblkcnt dblklen #ncci recvqueuelen
+// /proc/capi/applstats: 
+//      applid nrecvctlpkt nrecvdatapkt nsentctlpkt nsentdatapkt
+// ---------------------------------------------------------------------------
+
+static void *
+applications_start(struct seq_file *seq, loff_t *pos)
+{
+	if (*pos < CAPI_MAXAPPL)
+		return &capi_applications[*pos];
+
+	return NULL;
+}
+
+static void *
+applications_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	++*pos;
+	if (*pos < CAPI_MAXAPPL)
+		return &capi_applications[*pos];
+
+	return NULL;
+}
+
+static void
+applications_stop(struct seq_file *seq, void *v)
+{
+}
+
+static int
+applications_show(struct seq_file *seq, void *v)
+{
+	struct capi20_appl *ap = *(struct capi20_appl **) v;
+
+	if (!ap)
+		return 0;
+
+	seq_printf(seq, "%u %d %d %d\n",
+		   ap->applid,
+		   ap->rparam.level3cnt,
+		   ap->rparam.datablkcnt,
+		   ap->rparam.datablklen);
+
+	return 0;
+}
+
+static int
+applstats_show(struct seq_file *seq, void *v)
+{
+	struct capi20_appl *ap = *(struct capi20_appl **) v;
+
+	if (!ap)
+		return 0;
+
+	seq_printf(seq, "%u %lu %lu %lu %lu\n",
+		   ap->applid,
+		   ap->nrecvctlpkt,
+		   ap->nrecvdatapkt,
+		   ap->nsentctlpkt,
+		   ap->nsentdatapkt);
+
+	return 0;
+}
+
+struct seq_operations seq_applications_ops = {
+	start:	applications_start,
+	next:	applications_next,
+	stop:	applications_stop,
+	show:	applications_show,
+};
+
+struct seq_operations seq_applstats_ops = {
+	start:	applications_start,
+	next:	applications_next,
+	stop:	applications_stop,
+	show:	applstats_show,
+};
+
+static int
+seq_applications_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &seq_applications_ops);
+}
+
+static int
+seq_applstats_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &seq_applstats_ops);
+}
+
+static struct file_operations proc_applications_ops = {
+	open:		seq_applications_open,
+	read:		seq_read,
+	llseek:		seq_lseek,
+	release:	seq_release,
+};
+
+static struct file_operations proc_applstats_ops = {
+	open:		seq_applstats_open,
+	read:		seq_read,
+	llseek:		seq_lseek,
+	release:	seq_release,
+};
+
+static void
+create_seq_entry(char *name, mode_t mode, struct file_operations *f)
+{
+	struct proc_dir_entry *entry;
+	entry = create_proc_entry(name, mode, NULL);
+	if (entry)
+		entry->proc_fops = f;
+}
+
+// ---------------------------------------------------------------------------
+
+void __init 
+kcapi_proc_init(void)
+{
+	proc_mkdir("capi",             NULL);
+	proc_mkdir("capi/controllers", NULL);
+	proc_mkdir("capi/drivers",     NULL);
+	create_proc_read_entry("capi/driver", 0, NULL, proc_driver_read_proc, NULL);
+	create_seq_entry("capi/controller",   0, &proc_controller_ops);
+	create_seq_entry("capi/contrstats",   0, &proc_contrstats_ops);
+	create_seq_entry("capi/applications", 0, &proc_applications_ops);
+	create_seq_entry("capi/applstats",    0, &proc_applstats_ops);
+}
+
+void __exit
+kcapi_proc_exit(void)
+{
+	remove_proc_entry("capi/driver",       NULL);
+	remove_proc_entry("capi/controller",   NULL);
+	remove_proc_entry("capi/contrstats",   NULL);
+	remove_proc_entry("capi/applications", NULL);
+	remove_proc_entry("capi/applstats",    NULL);
+	remove_proc_entry("capi/drivers",      NULL);
+	remove_proc_entry("capi/controllers",  NULL);
+	remove_proc_entry("capi",              NULL);
+}