1 files changed, 381 insertions, 0 deletions
diff --git a/net/wanrouter/wanproc.c b/net/wanrouter/wanproc.c
new file mode 100644
index 00000000000..c28ba5a4720
--- /dev/null
+++ b/net/wanrouter/wanproc.c
@@ -0,0 +1,381 @@
+/*****************************************************************************
+* wanproc.c	WAN Router Module. /proc filesystem interface.
+*
+*		This module is completely hardware-independent and provides
+*		access to the router using Linux /proc filesystem.
+*
+* Author: 	Gideon Hack
+*
+* Copyright:	(c) 1995-1999 Sangoma Technologies Inc.
+*
+*		This program is free software; you can redistribute it and/or
+*		modify it under the terms of the GNU General Public License
+*		as published by the Free Software Foundation; either version
+*		2 of the License, or (at your option) any later version.
+* ============================================================================
+* Jun 02, 1999  Gideon Hack	Updates for Linux 2.2.X kernels.
+* Jun 29, 1997	Alan Cox	Merged with 1.0.3 vendor code
+* Jan 29, 1997	Gene Kozin	v1.0.1. Implemented /proc read routines
+* Jan 30, 1997	Alan Cox	Hacked around for 2.1
+* Dec 13, 1996	Gene Kozin	Initial version (based on Sangoma's WANPIPE)
+*****************************************************************************/
+
+#include <linux/config.h>
+#include <linux/init.h>		/* __initfunc et al. */
+#include <linux/stddef.h>	/* offsetof(), etc. */
+#include <linux/errno.h>	/* return codes */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/wanrouter.h>	/* WAN router API definitions */
+#include <linux/seq_file.h>
+#include <linux/smp_lock.h>
+
+#include <asm/io.h>
+
+#define PROC_STATS_FORMAT "%30s: %12lu\n"
+
+/****** Defines and Macros **************************************************/
+
+#define PROT_DECODE(prot) ((prot == WANCONFIG_FR) ? " FR" :\
+			      (prot == WANCONFIG_X25) ? " X25" : \
+			         (prot == WANCONFIG_PPP) ? " PPP" : \
+				    (prot == WANCONFIG_CHDLC) ? " CHDLC": \
+				       (prot == WANCONFIG_MPPP) ? " MPPP" : \
+				           " Unknown" )
+
+/****** Function Prototypes *************************************************/
+
+#ifdef CONFIG_PROC_FS
+
+/* Miscellaneous */
+
+/*
+ *	Structures for interfacing with the /proc filesystem.
+ *	Router creates its own directory /proc/net/router with the folowing
+ *	entries:
+ *	config		device configuration
+ *	status		global device statistics
+ *	<device>	entry for each WAN device
+ */
+
+/*
+ *	Generic /proc/net/router/<file> file and inode operations
+ */
+
+/*
+ *	/proc/net/router
+ */
+
+static struct proc_dir_entry *proc_router;
+
+/* Strings */
+
+/*
+ *	Interface functions
+ */
+
+/****** Proc filesystem entry points ****************************************/
+
+/*
+ *	Iterator
+ */
+static void *r_start(struct seq_file *m, loff_t *pos)
+{
+	struct wan_device *wandev;
+	loff_t l = *pos;
+
+	lock_kernel();
+	if (!l--)
+		return SEQ_START_TOKEN;
+	for (wandev = wanrouter_router_devlist; l-- && wandev;
+	     wandev = wandev->next)
+		;
+	return wandev;
+}
+
+static void *r_next(struct seq_file *m, void *v, loff_t *pos)
+{
+	struct wan_device *wandev = v;
+	(*pos)++;
+	return (v == SEQ_START_TOKEN) ? wanrouter_router_devlist : wandev->next;
+}
+
+static void r_stop(struct seq_file *m, void *v)
+{
+	unlock_kernel();
+}
+
+static int config_show(struct seq_file *m, void *v)
+{
+	struct wan_device *p = v;
+	if (v == SEQ_START_TOKEN) {
+		seq_puts(m, "Device name    | port |IRQ|DMA|  mem.addr  |"
+			    "mem.size|option1|option2|option3|option4\n");
+		return 0;
+	}
+	if (!p->state)
+		return 0;
+	seq_printf(m, "%-15s|0x%-4X|%3u|%3u| 0x%-8lX |0x%-6X|%7u|%7u|%7u|%7u\n",
+			p->name, p->ioport, p->irq, p->dma, p->maddr, p->msize,
+			p->hw_opt[0], p->hw_opt[1], p->hw_opt[2], p->hw_opt[3]);
+	return 0;
+}
+
+static int status_show(struct seq_file *m, void *v)
+{
+	struct wan_device *p = v;
+	if (v == SEQ_START_TOKEN) {
+		seq_puts(m, "Device name    |protocol|station|interface|"
+			    "clocking|baud rate| MTU |ndev|link state\n");
+		return 0;
+	}
+	if (!p->state)
+		return 0;
+	seq_printf(m, "%-15s|%-8s| %-7s| %-9s|%-8s|%9u|%5u|%3u |",
+		p->name,
+		PROT_DECODE(p->config_id),
+		p->config_id == WANCONFIG_FR ?
+			(p->station ? "Node" : "CPE") :
+			(p->config_id == WANCONFIG_X25 ?
+			(p->station ? "DCE" : "DTE") :
+			("N/A")),
+		p->interface ? "V.35" : "RS-232",
+		p->clocking ? "internal" : "external",
+		p->bps,
+		p->mtu,
+		p->ndev);
+
+	switch (p->state) {
+	case WAN_UNCONFIGURED:
+		seq_printf(m, "%-12s\n", "unconfigured");
+		break;
+	case WAN_DISCONNECTED:
+		seq_printf(m, "%-12s\n", "disconnected");
+		break;
+	case WAN_CONNECTING:
+		seq_printf(m, "%-12s\n", "connecting");
+		break;
+	case WAN_CONNECTED:
+		seq_printf(m, "%-12s\n", "connected");
+		break;
+	default:
+		seq_printf(m, "%-12s\n", "invalid");
+		break;
+	}
+	return 0;
+}
+
+static struct seq_operations config_op = {
+	.start	= r_start,
+	.next	= r_next,
+	.stop	= r_stop,
+	.show	= config_show,
+};
+
+static struct seq_operations status_op = {
+	.start	= r_start,
+	.next	= r_next,
+	.stop	= r_stop,
+	.show	= status_show,
+};
+
+static int config_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &config_op);
+}
+
+static int status_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &status_op);
+}
+
+static struct file_operations config_fops = {
+	.owner	 = THIS_MODULE,
+	.open	 = config_open,
+	.read	 = seq_read,
+	.llseek	 = seq_lseek,
+	.release = seq_release,
+};
+
+static struct file_operations status_fops = {
+	.owner	 = THIS_MODULE,
+	.open	 = status_open,
+	.read	 = seq_read,
+	.llseek	 = seq_lseek,
+	.release = seq_release,
+};
+
+static int wandev_show(struct seq_file *m, void *v)
+{
+	struct wan_device *wandev = m->private;
+
+	if (wandev->magic != ROUTER_MAGIC)
+		return 0;
+
+	if (!wandev->state) {
+		seq_puts(m, "device is not configured!\n");
+		return 0;
+	}
+
+	/* Update device statistics */
+	if (wandev->update) {
+		int err = wandev->update(wandev);
+		if (err == -EAGAIN) {
+			seq_puts(m, "Device is busy!\n");
+			return 0;
+		}
+		if (err) {
+			seq_puts(m, "Device is not configured!\n");
+			return 0;
+		}
+	}
+
+	seq_printf(m, PROC_STATS_FORMAT,
+		"total packets received", wandev->stats.rx_packets);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"total packets transmitted", wandev->stats.tx_packets);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"total bytes received", wandev->stats.rx_bytes);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"total bytes transmitted", wandev->stats.tx_bytes);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"bad packets received", wandev->stats.rx_errors);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"packet transmit problems", wandev->stats.tx_errors);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"received frames dropped", wandev->stats.rx_dropped);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"transmit frames dropped", wandev->stats.tx_dropped);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"multicast packets received", wandev->stats.multicast);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"transmit collisions", wandev->stats.collisions);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"receive length errors", wandev->stats.rx_length_errors);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"receiver overrun errors", wandev->stats.rx_over_errors);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"CRC errors", wandev->stats.rx_crc_errors);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"frame format errors (aborts)", wandev->stats.rx_frame_errors);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"receiver fifo overrun", wandev->stats.rx_fifo_errors);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"receiver missed packet", wandev->stats.rx_missed_errors);
+	seq_printf(m, PROC_STATS_FORMAT,
+		"aborted frames transmitted", wandev->stats.tx_aborted_errors);
+	return 0;
+}
+
+static int wandev_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, wandev_show, PDE(inode)->data);
+}
+
+static struct file_operations wandev_fops = {
+	.owner	 = THIS_MODULE,
+	.open	 = wandev_open,
+	.read	 = seq_read,
+	.llseek	 = seq_lseek,
+	.release = single_release,
+	.ioctl	 = wanrouter_ioctl,
+};
+
+/*
+ *	Initialize router proc interface.
+ */
+
+int __init wanrouter_proc_init(void)
+{
+	struct proc_dir_entry *p;
+	proc_router = proc_mkdir(ROUTER_NAME, proc_net);
+	if (!proc_router)
+		goto fail;
+
+	p = create_proc_entry("config", S_IRUGO, proc_router);
+	if (!p)
+		goto fail_config;
+	p->proc_fops = &config_fops;
+	p = create_proc_entry("status", S_IRUGO, proc_router);
+	if (!p)
+		goto fail_stat;
+	p->proc_fops = &status_fops;
+	return 0;
+fail_stat:
+	remove_proc_entry("config", proc_router);
+fail_config:
+	remove_proc_entry(ROUTER_NAME, proc_net);
+fail:
+	return -ENOMEM;
+}
+
+/*
+ *	Clean up router proc interface.
+ */
+
+void wanrouter_proc_cleanup(void)
+{
+	remove_proc_entry("config", proc_router);
+	remove_proc_entry("status", proc_router);
+	remove_proc_entry(ROUTER_NAME, proc_net);
+}
+
+/*
+ *	Add directory entry for WAN device.
+ */
+
+int wanrouter_proc_add(struct wan_device* wandev)
+{
+	if (wandev->magic != ROUTER_MAGIC)
+		return -EINVAL;
+
+	wandev->dent = create_proc_entry(wandev->name, S_IRUGO, proc_router);
+	if (!wandev->dent)
+		return -ENOMEM;
+	wandev->dent->proc_fops	= &wandev_fops;
+	wandev->dent->data	= wandev;
+	return 0;
+}
+
+/*
+ *	Delete directory entry for WAN device.
+ */
+int wanrouter_proc_delete(struct wan_device* wandev)
+{
+	if (wandev->magic != ROUTER_MAGIC)
+		return -EINVAL;
+	remove_proc_entry(wandev->name, proc_router);
+	return 0;
+}
+
+#else
+
+/*
+ *	No /proc - output stubs
+ */
+
+int __init wanrouter_proc_init(void)
+{
+	return 0;
+}
+
+void wanrouter_proc_cleanup(void)
+{
+}
+
+int wanrouter_proc_add(struct wan_device *wandev)
+{
+	return 0;
+}
+
+int wanrouter_proc_delete(struct wan_device *wandev)
+{
+	return 0;
+}
+
+#endif
+
+/*
+ *	End
+ */
+