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-rw-r--r--net/wanrouter/wanproc.c380
1 files changed, 0 insertions, 380 deletions
diff --git a/net/wanrouter/wanproc.c b/net/wanrouter/wanproc.c
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--- a/net/wanrouter/wanproc.c
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-/*****************************************************************************
-* 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/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/mutex.h>
-
-#include <net/net_namespace.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 following
- * 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 DEFINE_MUTEX(config_mutex);
-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;
-
- mutex_lock(&config_mutex);
- 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)
-{
- mutex_unlock(&config_mutex);
-}
-
-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 const struct seq_operations config_op = {
- .start = r_start,
- .next = r_next,
- .stop = r_stop,
- .show = config_show,
-};
-
-static const 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 const struct file_operations config_fops = {
- .owner = THIS_MODULE,
- .open = config_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = seq_release,
-};
-
-static const 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 const struct file_operations wandev_fops = {
- .owner = THIS_MODULE,
- .open = wandev_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .unlocked_ioctl = wanrouter_ioctl,
-};
-
-/*
- * Initialize router proc interface.
- */
-
-int __init wanrouter_proc_init(void)
-{
- struct proc_dir_entry *p;
- proc_router = proc_mkdir(ROUTER_NAME, init_net.proc_net);
- if (!proc_router)
- goto fail;
-
- p = proc_create("config", S_IRUGO, proc_router, &config_fops);
- if (!p)
- goto fail_config;
- p = proc_create("status", S_IRUGO, proc_router, &status_fops);
- if (!p)
- goto fail_stat;
- return 0;
-fail_stat:
- remove_proc_entry("config", proc_router);
-fail_config:
- remove_proc_entry(ROUTER_NAME, init_net.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, init_net.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 = proc_create(wandev->name, S_IRUGO,
- proc_router, &wandev_fops);
- if (!wandev->dent)
- return -ENOMEM;
- 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
- */
-