wanproc.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:27k
- /*****************************************************************************
- * 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/version.h>
- #include <linux/config.h>
- #include <linux/stddef.h> /* offsetof(), etc. */
- #include <linux/errno.h> /* return codes */
- #include <linux/kernel.h>
- #include <linux/slab.h> /* kmalloc(), kfree() */
- #include <linux/mm.h> /* verify_area(), etc. */
- #include <linux/string.h> /* inline mem*, str* functions */
- #include <asm/byteorder.h> /* htons(), etc. */
- #include <asm/io.h>
- #include <linux/wanrouter.h> /* WAN router API definitions */
- #if defined(LINUX_2_1) || defined(LINUX_2_4)
- #include <linux/init.h> /* __initfunc et al. */
- #include <asm/uaccess.h> /* copy_to_user */
- #define PROC_STATS_FORMAT "%30s: %12lun"
- #else
- #define PROC_STATS_FORMAT "%30s: %12un"
- #include <asm/segment.h> /* kernel <-> user copy */
- #endif
- /****** Defines and Macros **************************************************/
- #define PROC_BUFSZ 4000 /* buffer size for printing proc info */
- #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" )
-
- /****** Data Types **********************************************************/
- typedef struct wan_stat_entry
- {
- struct wan_stat_entry *next;
- char *description; /* description string */
- void *data; /* -> data */
- unsigned data_type; /* data type */
- } wan_stat_entry_t;
- /****** Function Prototypes *************************************************/
- #ifdef CONFIG_PROC_FS
- #ifdef LINUX_2_4 /* Start of LINUX 2.4.X code */
- /* Proc filesystem interface */
- static int router_proc_perms(struct inode *, int);
- static ssize_t router_proc_read(struct file* file, char* buf, size_t count, loff_t *ppos);
- /* Methods for preparing data for reading proc entries */
- static int config_get_info(char* buf, char** start, off_t offs, int len);
- static int status_get_info(char* buf, char** start, off_t offs, int len);
- static int wandev_get_info(char* buf, char** start, off_t offs, int len);
- /* 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
- */
- static struct file_operations router_fops =
- {
- read: router_proc_read,
- };
- static struct inode_operations router_inode =
- {
- permission: router_proc_perms,
- };
- /*
- * /proc/net/router/<device> file operations
- */
- static struct file_operations wandev_fops =
- {
- read: router_proc_read,
- ioctl: wanrouter_ioctl,
- };
- /*
- * /proc/net/router
- */
- static struct proc_dir_entry *proc_router;
- /* Strings */
- static char conf_hdr[] =
- "Device name | port |IRQ|DMA| mem.addr |mem.size|"
- "option1|option2|option3|option4n";
-
- static char stat_hdr[] =
- "Device name |protocol|station|interface|clocking|baud rate"
- "| MTU |ndev|link staten";
- /*
- * Interface functions
- */
- /*
- * 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",0,proc_router);
- if (!p)
- goto fail_config;
- p->proc_fops = &router_fops;
- p->proc_iops = &router_inode;
- p->get_info = config_get_info;
- p = create_proc_entry("status",0,proc_router);
- if (!p)
- goto fail_stat;
- p->proc_fops = &router_fops;
- p->proc_iops = &router_inode;
- p->get_info = status_get_info;
- 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 (wan_device_t* wandev)
- {
- if (wandev->magic != ROUTER_MAGIC)
- return -EINVAL;
-
- wandev->dent = create_proc_entry(wandev->name, 0, proc_router);
- if (!wandev->dent)
- return -ENOMEM;
- wandev->dent->proc_fops = &wandev_fops;
- wandev->dent->proc_iops = &router_inode;
- wandev->dent->get_info = wandev_get_info;
- wandev->dent->data = wandev;
- return 0;
- }
- /*
- * Delete directory entry for WAN device.
- */
-
- int wanrouter_proc_delete(wan_device_t* wandev)
- {
- if (wandev->magic != ROUTER_MAGIC)
- return -EINVAL;
- remove_proc_entry(wandev->name, proc_router);
- return 0;
- }
- /****** Proc filesystem entry points ****************************************/
- /*
- * Verify access rights.
- */
- static int router_proc_perms (struct inode* inode, int op)
- {
- return 0;
- }
- /*
- * Read router proc directory entry.
- * This is universal routine for reading all entries in /proc/net/wanrouter
- * directory. Each directory entry contains a pointer to the 'method' for
- * preparing data for that entry.
- * o verify arguments
- * o allocate kernel buffer
- * o call get_info() to prepare data
- * o copy data to user space
- * o release kernel buffer
- *
- * Return: number of bytes copied to user space (0, if no data)
- * <0 error
- */
- static ssize_t router_proc_read(struct file* file, char* buf, size_t count,
- loff_t *ppos)
- {
- struct inode *inode = file->f_dentry->d_inode;
- struct proc_dir_entry* dent;
- char* page;
- int pos, offs, len;
- if (count <= 0)
- return 0;
-
- dent = inode->u.generic_ip;
- if ((dent == NULL) || (dent->get_info == NULL))
- return 0;
-
- page = kmalloc(PROC_BUFSZ, GFP_KERNEL);
- if (page == NULL)
- return -ENOBUFS;
-
- pos = dent->get_info(page, dent->data, 0, 0);
- offs = file->f_pos;
- if (offs < pos) {
- len = min_t(unsigned int, pos - offs, count);
- if (copy_to_user(buf, (page + offs), len)) {
- kfree(page);
- return -EFAULT;
- }
- file->f_pos += len;
- }
- else
- len = 0;
- kfree(page);
- return len;
- }
- /*
- * Prepare data for reading 'Config' entry.
- * Return length of data.
- */
- static int config_get_info(char* buf, char** start, off_t offs, int len)
- {
- int cnt = sizeof(conf_hdr) - 1;
- wan_device_t* wandev;
- strcpy(buf, conf_hdr);
- for (wandev = router_devlist;
- wandev && (cnt < (PROC_BUFSZ - 120));
- wandev = wandev->next) {
- if (wandev->state) cnt += sprintf(&buf[cnt],
- "%-15s|0x%-4X|%3u|%3u| 0x%-8lX |0x%-6X|%7u|%7u|%7u|%7un",
- wandev->name,
- wandev->ioport,
- wandev->irq,
- wandev->dma,
- wandev->maddr,
- wandev->msize,
- wandev->hw_opt[0],
- wandev->hw_opt[1],
- wandev->hw_opt[2],
- wandev->hw_opt[3]);
- }
- return cnt;
- }
- /*
- * Prepare data for reading 'Status' entry.
- * Return length of data.
- */
- static int status_get_info(char* buf, char** start, off_t offs, int len)
- {
- int cnt = 0;
- wan_device_t* wandev;
- //cnt += sprintf(&buf[cnt], "nSTATUS:nn");
- strcpy(&buf[cnt], stat_hdr);
- cnt += sizeof(stat_hdr) - 1;
- for (wandev = router_devlist;
- wandev && (cnt < (PROC_BUFSZ - 80));
- wandev = wandev->next) {
- if (!wandev->state) continue;
- cnt += sprintf(&buf[cnt],
- "%-15s|%-8s|%-7s|%-9s|%-8s|%9u|%5u|%3u |",
- wandev->name,
- PROT_DECODE(wandev->config_id),
- wandev->config_id == WANCONFIG_FR ?
- (wandev->station ? " Node" : " CPE") :
- (wandev->config_id == WANCONFIG_X25 ?
- (wandev->station ? " DCE" : " DTE") :
- (" N/A")),
- wandev->interface ? " V.35" : " RS-232",
- wandev->clocking ? "internal" : "external",
- wandev->bps,
- wandev->mtu,
- wandev->ndev);
- switch (wandev->state) {
- case WAN_UNCONFIGURED:
- cnt += sprintf(&buf[cnt], "%-12sn", "unconfigured");
- break;
- case WAN_DISCONNECTED:
- cnt += sprintf(&buf[cnt], "%-12sn", "disconnected");
- break;
- case WAN_CONNECTING:
- cnt += sprintf(&buf[cnt], "%-12sn", "connecting");
- break;
- case WAN_CONNECTED:
- cnt += sprintf(&buf[cnt], "%-12sn", "connected");
- break;
- default:
- cnt += sprintf(&buf[cnt], "%-12sn", "invalid");
- break;
- }
- }
- return cnt;
- }
- /*
- * Prepare data for reading <device> entry.
- * Return length of data.
- *
- * On entry, the 'start' argument will contain a pointer to WAN device
- * data space.
- */
- static int wandev_get_info(char* buf, char** start, off_t offs, int len)
- {
- wan_device_t* wandev = (void*)start;
- int cnt = 0;
- int rslt = 0;
- if ((wandev == NULL) || (wandev->magic != ROUTER_MAGIC))
- return 0;
- if (!wandev->state)
- return sprintf(&buf[cnt], "device is not configured!n");
- /* Update device statistics */
- if (wandev->update) {
- rslt = wandev->update(wandev);
- if(rslt) {
- switch (rslt) {
- case -EAGAIN:
- return sprintf(&buf[cnt], "Device is busy!n");
- default:
- return sprintf(&buf[cnt],
- "Device is not configured!n");
- }
- }
- }
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "total packets received", wandev->stats.rx_packets);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "total packets transmitted", wandev->stats.tx_packets);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "total bytes received", wandev->stats.rx_bytes);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "total bytes transmitted", wandev->stats.tx_bytes);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "bad packets received", wandev->stats.rx_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "packet transmit problems", wandev->stats.tx_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "received frames dropped", wandev->stats.rx_dropped);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "transmit frames dropped", wandev->stats.tx_dropped);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "multicast packets received", wandev->stats.multicast);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "transmit collisions", wandev->stats.collisions);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "receive length errors", wandev->stats.rx_length_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "receiver overrun errors", wandev->stats.rx_over_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "CRC errors", wandev->stats.rx_crc_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "frame format errors (aborts)", wandev->stats.rx_frame_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "receiver fifo overrun", wandev->stats.rx_fifo_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "receiver missed packet", wandev->stats.rx_missed_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "aborted frames transmitted", wandev->stats.tx_aborted_errors);
- return cnt;
- }
- #else /* ------------------- END OF LINUX 2.4.X VERSION -------------*/
- /* Proc filesystem interface */
- static int router_proc_perms(struct inode *, int);
- #ifdef LINUX_2_1
- static ssize_t router_proc_read(struct file *file, char *buf, size_t count, loff_t *ppos);
- #else
- static int router_proc_read(
- struct inode* inode, struct file* file, char* buf, int count);
- static int device_write(
- struct inode* inode, struct file* file, const char* buf, int count);
- #endif
- /* Methods for preparing data for reading proc entries */
- static int config_get_info(char* buf, char** start, off_t offs, int len,
- int dummy);
- static int status_get_info(char* buf, char** start, off_t offs, int len,
- int dummy);
- static int wandev_get_info(char* buf, char** start, off_t offs, int len,
- int dummy);
- /* Miscellaneous */
- /*
- * Global Data
- */
- /*
- * Names of the proc directory entries
- */
- static char name_root[] = ROUTER_NAME;
- static char name_conf[] = "config";
- static char name_stat[] = "status";
- /*
- * 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
- */
- #ifdef LINUX_2_1
- static struct file_operations router_fops =
- {
- NULL, /* lseek */
- router_proc_read, /* read */
- NULL, /* write */
- NULL, /* readdir */
- NULL, /* select */
- NULL, /* ioctl */
- NULL, /* mmap */
- NULL, /* no special open code */
- NULL, /* flush */
- NULL, /* no special release code */
- NULL /* can't fsync */
- };
- #else
- static struct file_operations router_fops =
- {
- NULL, /* lseek */
- router_proc_read, /* read */
- NULL, /* write */
- NULL, /* readdir */
- NULL, /* select */
- NULL, /* ioctl */
- NULL, /* mmap */
- NULL, /* no special open code */
- NULL, /* no special release code */
- NULL /* can't fsync */
- };
- #endif
- static struct inode_operations router_inode =
- {
- &router_fops,
- NULL, /* create */
- NULL, /* lookup */
- NULL, /* link */
- NULL, /* unlink */
- NULL, /* symlink */
- NULL, /* mkdir */
- NULL, /* rmdir */
- NULL, /* mknod */
- NULL, /* rename */
- NULL, /* follow link */
- NULL, /* readlink */
- NULL, /* readpage */
- NULL, /* writepage */
- NULL, /* bmap */
- NULL, /* truncate */
- router_proc_perms
- };
- /*
- * /proc/net/router/<device> file and inode operations
- */
- #ifdef LINUX_2_1
- static struct file_operations wandev_fops =
- {
- NULL, /* lseek */
- router_proc_read, /* read */
- NULL, /* write */
- NULL, /* readdir */
- NULL, /* select */
- wanrouter_ioctl, /* ioctl */
- NULL, /* mmap */
- NULL, /* no special open code */
- NULL, /* flush */
- NULL, /* no special release code */
- NULL /* can't fsync */
- };
- #else
- static struct file_operations wandev_fops =
- {
- NULL, /* lseek */
- router_proc_read, /* read */
- device_write, /* write */
- NULL, /* readdir */
- NULL, /* select */
- wanrouter_ioctl, /* ioctl */
- NULL, /* mmap */
- NULL, /* no special open code */
- NULL, /* no special release code */
- NULL /* can't fsync */
- };
- #endif
- static struct inode_operations wandev_inode =
- {
- &wandev_fops,
- NULL, /* create */
- NULL, /* lookup */
- NULL, /* link */
- NULL, /* unlink */
- NULL, /* symlink */
- NULL, /* mkdir */
- NULL, /* rmdir */
- NULL, /* mknod */
- NULL, /* rename */
- NULL, /* readlink */
- NULL, /* follow_link */
- NULL, /* readpage */
- NULL, /* writepage */
- NULL, /* bmap */
- NULL, /* truncate */
- router_proc_perms
- };
- /*
- * Proc filesystem derectory entries.
- */
- /*
- * /proc/net/router
- */
-
- static struct proc_dir_entry proc_router =
- {
- 0, /* .low_ino */
- sizeof(name_root) - 1, /* .namelen */
- name_root, /* .name */
- 0555 | S_IFDIR, /* .mode */
- 2, /* .nlink */
- 0, /* .uid */
- 0, /* .gid */
- 0, /* .size */
- &proc_dir_inode_operations, /* .ops */
- NULL, /* .get_info */
- NULL, /* .fill_node */
- NULL, /* .next */
- NULL, /* .parent */
- NULL, /* .subdir */
- NULL, /* .data */
- };
- /*
- * /proc/net/router/config
- */
-
- static struct proc_dir_entry proc_router_conf =
- {
- 0, /* .low_ino */
- sizeof(name_conf) - 1, /* .namelen */
- name_conf, /* .name */
- 0444 | S_IFREG, /* .mode */
- 1, /* .nlink */
- 0, /* .uid */
- 0, /* .gid */
- 0, /* .size */
- &router_inode, /* .ops */
- &config_get_info, /* .get_info */
- NULL, /* .fill_node */
- NULL, /* .next */
- NULL, /* .parent */
- NULL, /* .subdir */
- NULL, /* .data */
- };
- /*
- * /proc/net/router/status
- */
-
- static struct proc_dir_entry proc_router_stat =
- {
- 0, /* .low_ino */
- sizeof(name_stat) - 1, /* .namelen */
- name_stat, /* .name */
- 0444 | S_IFREG, /* .mode */
- 1, /* .nlink */
- 0, /* .uid */
- 0, /* .gid */
- 0, /* .size */
- &router_inode, /* .ops */
- status_get_info, /* .get_info */
- NULL, /* .fill_node */
- NULL, /* .next */
- NULL, /* .parent */
- NULL, /* .subdir */
- NULL, /* .data */
- };
- /* Strings */
- static char conf_hdr[] =
- "Device name | port |IRQ|DMA| mem.addr |mem.size|"
- "option1|option2|option3|option4n";
-
- static char stat_hdr[] =
- "Device name |protocol|station|interface|clocking|baud rate| MTU |ndev"
- "|link staten";
- /*
- * Interface functions
- */
- /*
- * Initialize router proc interface.
- */
- #ifdef LINUX_2_1
- __initfunc(int wanrouter_proc_init (void))
- {
- int err = proc_register(proc_net, &proc_router);
- if (!err) {
- proc_register(&proc_router, &proc_router_conf);
- proc_register(&proc_router, &proc_router_stat);
- }
- return err;
- }
- #else
- int wanrouter_proc_init (void)
- {
- int err = proc_register_dynamic(&proc_net, &proc_router);
- if (!err) {
- proc_register_dynamic(&proc_router, &proc_router_conf);
- proc_register_dynamic(&proc_router, &proc_router_stat);
- }
- return err;
- }
- #endif
- /*
- * Clean up router proc interface.
- */
- void wanrouter_proc_cleanup (void)
- {
- proc_unregister(&proc_router, proc_router_conf.low_ino);
- proc_unregister(&proc_router, proc_router_stat.low_ino);
- #ifdef LINUX_2_1
- proc_unregister(proc_net, proc_router.low_ino);
- #else
- proc_unregister(&proc_net, proc_router.low_ino);
- #endif
- }
- /*
- * Add directory entry for WAN device.
- */
- int wanrouter_proc_add (wan_device_t* wandev)
- {
- if (wandev->magic != ROUTER_MAGIC)
- return -EINVAL;
-
- memset(&wandev->dent, 0, sizeof(wandev->dent));
- wandev->dent.namelen = strlen(wandev->name);
- wandev->dent.name = wandev->name;
- wandev->dent.mode = 0444 | S_IFREG;
- wandev->dent.nlink = 1;
- wandev->dent.ops = &wandev_inode;
- wandev->dent.get_info = &wandev_get_info;
- wandev->dent.data = wandev;
- #ifdef LINUX_2_1
- return proc_register(&proc_router, &wandev->dent);
- #else
- return proc_register_dynamic(&proc_router, &wandev->dent);
- #endif
- }
- /*
- * Delete directory entry for WAN device.
- */
-
- int wanrouter_proc_delete(wan_device_t* wandev)
- {
- if (wandev->magic != ROUTER_MAGIC)
- return -EINVAL;
- proc_unregister(&proc_router, wandev->dent.low_ino);
- return 0;
- }
- /****** Proc filesystem entry points ****************************************/
- /*
- * Verify access rights.
- */
- static int router_proc_perms (struct inode* inode, int op)
- {
- return 0;
- }
- /*
- * Read router proc directory entry.
- * This is universal routine for reading all entries in /proc/net/wanrouter
- * directory. Each directory entry contains a pointer to the 'method' for
- * preparing data for that entry.
- * o verify arguments
- * o allocate kernel buffer
- * o call get_info() to prepare data
- * o copy data to user space
- * o release kernel buffer
- *
- * Return: number of bytes copied to user space (0, if no data)
- * <0 error
- */
- #ifdef LINUX_2_1
- static ssize_t router_proc_read(struct file* file, char* buf, size_t count,
- loff_t *ppos)
- {
- struct inode *inode = file->f_dentry->d_inode;
- struct proc_dir_entry* dent;
- char* page;
- int pos, offs, len;
- if (count <= 0)
- return 0;
-
- dent = inode->u.generic_ip;
- if ((dent == NULL) || (dent->get_info == NULL))
- return 0;
-
- page = kmalloc(PROC_BUFSZ, GFP_KERNEL);
- if (page == NULL)
- return -ENOBUFS;
-
- pos = dent->get_info(page, dent->data, 0, 0, 0);
- offs = file->f_pos;
- if (offs < pos) {
- len = min_t(unsigned int, pos - offs, count);
- if (copy_to_user(buf, (page + offs), len)) {
- kfree(page);
- return -EFAULT;
- }
- file->f_pos += len;
- }
- else
- len = 0;
- kfree(page);
- return len;
- }
- #else
- static int router_proc_read(
- struct inode* inode, struct file* file, char* buf, int count)
- {
- struct proc_dir_entry* dent;
- char* page;
- int err, pos, offs, len;
- if (count <= 0)
- return 0;
- dent = inode->u.generic_ip;
- if ((dent == NULL) || (dent->get_info == NULL))
- return -ENODATA;
- err = verify_area(VERIFY_WRITE, buf, count);
- if (err) return err;
- page = kmalloc(PROC_BUFSZ, GFP_KERNEL);
- if (page == NULL)
- return -ENOMEM;
- pos = dent->get_info(page, dent->data, 0, 0, 0);
- offs = file->f_pos;
- if (offs < pos) {
- len = min_t(unsigned int, pos - offs, count);
- memcpy_tofs((void*)buf, (void*)(page + offs), len);
- file->f_pos += len;
- }
- else len = 0;
- kfree(page);
- return len;
- }
- #endif
- /*
- * Prepare data for reading 'Config' entry.
- * Return length of data.
- */
- static int config_get_info(char* buf, char** start, off_t offs, int len,
- int dummy)
- {
- int cnt = sizeof(conf_hdr) - 1;
- wan_device_t* wandev;
- strcpy(buf, conf_hdr);
- for (wandev = router_devlist;
- wandev && (cnt < (PROC_BUFSZ - 120));
- wandev = wandev->next) {
- if (wandev->state) cnt += sprintf(&buf[cnt],
- "%-15s|0x%-4X|%3u|%3u| 0x%-8lX |0x%-6X|%7u|%7u|%7u|%7un",
- wandev->name,
- wandev->ioport,
- wandev->irq,
- wandev->dma,
- wandev->maddr,
- wandev->msize,
- wandev->hw_opt[0],
- wandev->hw_opt[1],
- wandev->hw_opt[2],
- wandev->hw_opt[3]);
- }
- return cnt;
- }
- /*
- * Prepare data for reading 'Status' entry.
- * Return length of data.
- */
- static int status_get_info(char* buf, char** start, off_t offs, int len,
- int dummy)
- {
- int cnt = 0;
- wan_device_t* wandev;
- //cnt += sprintf(&buf[cnt], "nSTATUS:nn");
- strcpy(&buf[cnt], stat_hdr);
- cnt += sizeof(stat_hdr) - 1;
- for (wandev = router_devlist;
- wandev && (cnt < (PROC_BUFSZ - 80));
- wandev = wandev->next) {
- if (!wandev->state) continue;
- cnt += sprintf(&buf[cnt],
- "%-15s|%-8s|%-7s|%-9s|%-8s|%9u|%5u|%3u |",
- wandev->name,
- PROT_DECODE(wandev->config_id),
- wandev->config_id == WANCONFIG_FR ?
- (wandev->station ? " Node" : " CPE") :
- (wandev->config_id == WANCONFIG_X25 ?
- (wandev->station ? " DCE" : " DTE") :
- (" N/A")),
- wandev->interface ? " V.35" : " RS-232",
- wandev->clocking ? "internal" : "external",
- wandev->bps,
- wandev->mtu,
- wandev->ndev);
- switch (wandev->state) {
- case WAN_UNCONFIGURED:
- cnt += sprintf(&buf[cnt], "%-12sn", "unconfigured");
- break;
- case WAN_DISCONNECTED:
- cnt += sprintf(&buf[cnt], "%-12sn", "disconnected");
- break;
- case WAN_CONNECTING:
- cnt += sprintf(&buf[cnt], "%-12sn", "connecting");
- break;
- case WAN_CONNECTED:
- cnt += sprintf(&buf[cnt], "%-12sn", "connected");
- break;
- case WAN_FT1_READY:
- cnt += sprintf(&buf[cnt], "%-12sn", "ft1 ready");
- break;
- default:
- cnt += sprintf(&buf[cnt], "%-12sn", "invalid");
- break;
- }
- }
- return cnt;
- }
- /*
- * Prepare data for reading <device> entry.
- * Return length of data.
- *
- * On entry, the 'start' argument will contain a pointer to WAN device
- * data space.
- */
- static int wandev_get_info(char* buf, char** start, off_t offs, int len,
- int dummy)
- {
- wan_device_t* wandev = (void*)start;
- int cnt = 0;
- int rslt = 0;
- if ((wandev == NULL) || (wandev->magic != ROUTER_MAGIC))
- return 0;
- if (!wandev->state)
- return sprintf(&buf[cnt], "Device is not configured!n");
- /* Update device statistics */
- if (wandev->update) {
- rslt = wandev->update(wandev);
- if(rslt) {
- switch (rslt) {
- case -EAGAIN:
- return sprintf(&buf[cnt], "Device is busy!n");
- default:
- return sprintf(&buf[cnt],
- "Device is not configured!n");
- }
- }
- }
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "total packets received", wandev->stats.rx_packets);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "total packets transmitted", wandev->stats.tx_packets);
- #ifdef LINUX_2_1
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "total bytes received", wandev->stats.rx_bytes);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "total bytes transmitted", wandev->stats.tx_bytes);
- #endif
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "bad packets received", wandev->stats.rx_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "packet transmit problems", wandev->stats.tx_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "received frames dropped", wandev->stats.rx_dropped);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "transmit frames dropped", wandev->stats.tx_dropped);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "multicast packets received", wandev->stats.multicast);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "transmit collisions", wandev->stats.collisions);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "receive length errors", wandev->stats.rx_length_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "receiver overrun errors", wandev->stats.rx_over_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "CRC errors", wandev->stats.rx_crc_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "frame format errors (aborts)", wandev->stats.rx_frame_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "receiver fifo overrun", wandev->stats.rx_fifo_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "receiver missed packet", wandev->stats.rx_missed_errors);
- cnt += sprintf(&buf[cnt], PROC_STATS_FORMAT,
- "aborted frames transmitted", wandev->stats.tx_aborted_errors);
- return cnt;
- }
- #endif /* End of ifdef LINUX_2_4 */
- #else
- /*
- * No /proc - output stubs
- */
- int __init wanrouter_proc_init(void)
- {
- return 0;
- }
- void wanrouter_proc_cleanup(void)
- {
- return;
- }
- int wanrouter_proc_add(wan_device_t *wandev)
- {
- return 0;
- }
- int wanrouter_proc_delete(wan_device_t *wandev)
- {
- return 0;
- }
- #endif
- /*============================================================================
- * Write WAN device ???.
- * o Find WAN device associated with this node
- */
- #ifdef LINUX_2_0
- static int device_write(
- struct inode* inode, struct file* file, const char* buf, int count)
- {
- int err = verify_area(VERIFY_READ, buf, count);
- struct proc_dir_entry* dent;
- wan_device_t* wandev;
- if (err) return err;
- dent = inode->u.generic_ip;
- if ((dent == NULL) || (dent->data == NULL))
- return -ENODATA;
- wandev = dent->data;
- printk(KERN_ERR "%s: writing %d bytes to %s...n",
- name_root, count, dent->name);
-
- return 0;
- }
- #endif
- /*
- * End
- */
-