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authorPaul Gortmaker <paul.gortmaker@windriver.com>2013-01-30 21:50:08 -0500
committerPaul Gortmaker <paul.gortmaker@windriver.com>2013-01-31 19:56:35 -0500
commit6fcdf4facb85e7d54ff6195378dd2ba8e0baccc4 (patch)
tree97220d3bf7c93be60bb805e4c8e149a96f11f91d /net
parenta786a7c0ad44985548118fd2370c792c0da36891 (diff)
wanrouter: delete now orphaned header content, files/drivers
The wanrouter support was identified earlier as unused for years, and so the previous commit totally decoupled it from the kernel, leaving the related wanrouter files present, but totally inert. Here we take the final step in that cleanup, by doing a wholesale removal of these files. The two step process is used so that the large deletion is decoupled from the git history of files that we still care about. The drivers deleted here all were dependent on the Kconfig setting CONFIG_WAN_ROUTER_DRIVERS. A stub wanrouter.h header (kernel & uapi) are left behind so that drivers/isdn/i4l/isdn_x25iface.c continues to compile, and so that we don't accidentally break userspace that expected these defines. Cc: Joe Perches <joe@perches.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'net')
-rw-r--r--net/wanrouter/Kconfig27
-rw-r--r--net/wanrouter/Makefile7
-rw-r--r--net/wanrouter/patchlevel1
-rw-r--r--net/wanrouter/wanmain.c782
-rw-r--r--net/wanrouter/wanproc.c380
5 files changed, 0 insertions, 1197 deletions
diff --git a/net/wanrouter/Kconfig b/net/wanrouter/Kconfig
deleted file mode 100644
index a157a2e64e18..000000000000
--- a/net/wanrouter/Kconfig
+++ /dev/null
@@ -1,27 +0,0 @@
1#
2# Configuration for WAN router
3#
4
5config WAN_ROUTER
6 tristate "WAN router (DEPRECATED)"
7 depends on EXPERIMENTAL
8 ---help---
9 Wide Area Networks (WANs), such as X.25, frame relay and leased
10 lines, are used to interconnect Local Area Networks (LANs) over vast
11 distances with data transfer rates significantly higher than those
12 achievable with commonly used asynchronous modem connections.
13 Usually, a quite expensive external device called a `WAN router' is
14 needed to connect to a WAN.
15
16 As an alternative, WAN routing can be built into the Linux kernel.
17 With relatively inexpensive WAN interface cards available on the
18 market, a perfectly usable router can be built for less than half
19 the price of an external router. If you have one of those cards and
20 wish to use your Linux box as a WAN router, say Y here and also to
21 the WAN driver for your card, below. You will then need the
22 wan-tools package which is available from <ftp://ftp.sangoma.com/>.
23
24 To compile WAN routing support as a module, choose M here: the
25 module will be called wanrouter.
26
27 If unsure, say N.
diff --git a/net/wanrouter/Makefile b/net/wanrouter/Makefile
deleted file mode 100644
index 4da14bc48078..000000000000
--- a/net/wanrouter/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
1#
2# Makefile for the Linux WAN router layer.
3#
4
5obj-$(CONFIG_WAN_ROUTER) += wanrouter.o
6
7wanrouter-y := wanproc.o wanmain.o
diff --git a/net/wanrouter/patchlevel b/net/wanrouter/patchlevel
deleted file mode 100644
index c043eea7767e..000000000000
--- a/net/wanrouter/patchlevel
+++ /dev/null
@@ -1 +0,0 @@
12.2.1
diff --git a/net/wanrouter/wanmain.c b/net/wanrouter/wanmain.c
deleted file mode 100644
index 2ab785064b7e..000000000000
--- a/net/wanrouter/wanmain.c
+++ /dev/null
@@ -1,782 +0,0 @@
1/*****************************************************************************
2* wanmain.c WAN Multiprotocol Router Module. Main code.
3*
4* This module is completely hardware-independent and provides
5* the following common services for the WAN Link Drivers:
6* o WAN device management (registering, unregistering)
7* o Network interface management
8* o Physical connection management (dial-up, incoming calls)
9* o Logical connection management (switched virtual circuits)
10* o Protocol encapsulation/decapsulation
11*
12* Author: Gideon Hack
13*
14* Copyright: (c) 1995-1999 Sangoma Technologies Inc.
15*
16* This program is free software; you can redistribute it and/or
17* modify it under the terms of the GNU General Public License
18* as published by the Free Software Foundation; either version
19* 2 of the License, or (at your option) any later version.
20* ============================================================================
21* Nov 24, 2000 Nenad Corbic Updated for 2.4.X kernels
22* Nov 07, 2000 Nenad Corbic Fixed the Mulit-Port PPP for kernels 2.2.16 and
23* greater.
24* Aug 2, 2000 Nenad Corbic Block the Multi-Port PPP from running on
25* kernels 2.2.16 or greater. The SyncPPP
26* has changed.
27* Jul 13, 2000 Nenad Corbic Added SyncPPP support
28* Added extra debugging in device_setup().
29* Oct 01, 1999 Gideon Hack Update for s514 PCI card
30* Dec 27, 1996 Gene Kozin Initial version (based on Sangoma's WANPIPE)
31* Jan 16, 1997 Gene Kozin router_devlist made public
32* Jan 31, 1997 Alan Cox Hacked it about a bit for 2.1
33* Jun 27, 1997 Alan Cox realigned with vendor code
34* Oct 15, 1997 Farhan Thawar changed wan_encapsulate to add a pad byte of 0
35* Apr 20, 1998 Alan Cox Fixed 2.1 symbols
36* May 17, 1998 K. Baranowski Fixed SNAP encapsulation in wan_encapsulate
37* Dec 15, 1998 Arnaldo Melo support for firmwares of up to 128000 bytes
38* check wandev->setup return value
39* Dec 22, 1998 Arnaldo Melo vmalloc/vfree used in device_setup to allocate
40* kernel memory and copy configuration data to
41* kernel space (for big firmwares)
42* Jun 02, 1999 Gideon Hack Updates for Linux 2.0.X and 2.2.X kernels.
43*****************************************************************************/
44
45#include <linux/stddef.h> /* offsetof(), etc. */
46#include <linux/capability.h>
47#include <linux/errno.h> /* return codes */
48#include <linux/kernel.h>
49#include <linux/module.h> /* support for loadable modules */
50#include <linux/slab.h> /* kmalloc(), kfree() */
51#include <linux/mutex.h>
52#include <linux/mm.h>
53#include <linux/string.h> /* inline mem*, str* functions */
54
55#include <asm/byteorder.h> /* htons(), etc. */
56#include <linux/wanrouter.h> /* WAN router API definitions */
57
58#include <linux/vmalloc.h> /* vmalloc, vfree */
59#include <asm/uaccess.h> /* copy_to/from_user */
60#include <linux/init.h> /* __initfunc et al. */
61
62#define DEV_TO_SLAVE(dev) (*((struct net_device **)netdev_priv(dev)))
63
64/*
65 * Function Prototypes
66 */
67
68/*
69 * WAN device IOCTL handlers
70 */
71
72static DEFINE_MUTEX(wanrouter_mutex);
73static int wanrouter_device_setup(struct wan_device *wandev,
74 wandev_conf_t __user *u_conf);
75static int wanrouter_device_stat(struct wan_device *wandev,
76 wandev_stat_t __user *u_stat);
77static int wanrouter_device_shutdown(struct wan_device *wandev);
78static int wanrouter_device_new_if(struct wan_device *wandev,
79 wanif_conf_t __user *u_conf);
80static int wanrouter_device_del_if(struct wan_device *wandev,
81 char __user *u_name);
82
83/*
84 * Miscellaneous
85 */
86
87static struct wan_device *wanrouter_find_device(char *name);
88static int wanrouter_delete_interface(struct wan_device *wandev, char *name);
89static void lock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags)
90 __acquires(lock);
91static void unlock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags)
92 __releases(lock);
93
94
95
96/*
97 * Global Data
98 */
99
100static char wanrouter_fullname[] = "Sangoma WANPIPE Router";
101static char wanrouter_copyright[] = "(c) 1995-2000 Sangoma Technologies Inc.";
102static char wanrouter_modname[] = ROUTER_NAME; /* short module name */
103struct wan_device* wanrouter_router_devlist; /* list of registered devices */
104
105/*
106 * Organize Unique Identifiers for encapsulation/decapsulation
107 */
108
109#if 0
110static unsigned char wanrouter_oui_ether[] = { 0x00, 0x00, 0x00 };
111static unsigned char wanrouter_oui_802_2[] = { 0x00, 0x80, 0xC2 };
112#endif
113
114static int __init wanrouter_init(void)
115{
116 int err;
117
118 printk(KERN_INFO "%s v%u.%u %s\n",
119 wanrouter_fullname, ROUTER_VERSION, ROUTER_RELEASE,
120 wanrouter_copyright);
121
122 err = wanrouter_proc_init();
123 if (err)
124 printk(KERN_INFO "%s: can't create entry in proc filesystem!\n",
125 wanrouter_modname);
126
127 return err;
128}
129
130static void __exit wanrouter_cleanup (void)
131{
132 wanrouter_proc_cleanup();
133}
134
135/*
136 * This is just plain dumb. We should move the bugger to drivers/net/wan,
137 * slap it first in directory and make it module_init(). The only reason
138 * for subsys_initcall() here is that net goes after drivers (why, BTW?)
139 */
140subsys_initcall(wanrouter_init);
141module_exit(wanrouter_cleanup);
142
143/*
144 * Kernel APIs
145 */
146
147/*
148 * Register WAN device.
149 * o verify device credentials
150 * o create an entry for the device in the /proc/net/router directory
151 * o initialize internally maintained fields of the wan_device structure
152 * o link device data space to a singly-linked list
153 * o if it's the first device, then start kernel 'thread'
154 * o increment module use count
155 *
156 * Return:
157 * 0 Ok
158 * < 0 error.
159 *
160 * Context: process
161 */
162
163
164int register_wan_device(struct wan_device *wandev)
165{
166 int err, namelen;
167
168 if ((wandev == NULL) || (wandev->magic != ROUTER_MAGIC) ||
169 (wandev->name == NULL))
170 return -EINVAL;
171
172 namelen = strlen(wandev->name);
173 if (!namelen || (namelen > WAN_DRVNAME_SZ))
174 return -EINVAL;
175
176 if (wanrouter_find_device(wandev->name))
177 return -EEXIST;
178
179#ifdef WANDEBUG
180 printk(KERN_INFO "%s: registering WAN device %s\n",
181 wanrouter_modname, wandev->name);
182#endif
183
184 /*
185 * Register /proc directory entry
186 */
187 err = wanrouter_proc_add(wandev);
188 if (err) {
189 printk(KERN_INFO
190 "%s: can't create /proc/net/router/%s entry!\n",
191 wanrouter_modname, wandev->name);
192 return err;
193 }
194
195 /*
196 * Initialize fields of the wan_device structure maintained by the
197 * router and update local data.
198 */
199
200 wandev->ndev = 0;
201 wandev->dev = NULL;
202 wandev->next = wanrouter_router_devlist;
203 wanrouter_router_devlist = wandev;
204 return 0;
205}
206
207/*
208 * Unregister WAN device.
209 * o shut down device
210 * o unlink device data space from the linked list
211 * o delete device entry in the /proc/net/router directory
212 * o decrement module use count
213 *
214 * Return: 0 Ok
215 * <0 error.
216 * Context: process
217 */
218
219
220int unregister_wan_device(char *name)
221{
222 struct wan_device *wandev, *prev;
223
224 if (name == NULL)
225 return -EINVAL;
226
227 for (wandev = wanrouter_router_devlist, prev = NULL;
228 wandev && strcmp(wandev->name, name);
229 prev = wandev, wandev = wandev->next)
230 ;
231 if (wandev == NULL)
232 return -ENODEV;
233
234#ifdef WANDEBUG
235 printk(KERN_INFO "%s: unregistering WAN device %s\n",
236 wanrouter_modname, name);
237#endif
238
239 if (wandev->state != WAN_UNCONFIGURED)
240 wanrouter_device_shutdown(wandev);
241
242 if (prev)
243 prev->next = wandev->next;
244 else
245 wanrouter_router_devlist = wandev->next;
246
247 wanrouter_proc_delete(wandev);
248 return 0;
249}
250
251#if 0
252
253/*
254 * Encapsulate packet.
255 *
256 * Return: encapsulation header size
257 * < 0 - unsupported Ethertype
258 *
259 * Notes:
260 * 1. This function may be called on interrupt context.
261 */
262
263
264int wanrouter_encapsulate(struct sk_buff *skb, struct net_device *dev,
265 unsigned short type)
266{
267 int hdr_len = 0;
268
269 switch (type) {
270 case ETH_P_IP: /* IP datagram encapsulation */
271 hdr_len += 1;
272 skb_push(skb, 1);
273 skb->data[0] = NLPID_IP;
274 break;
275
276 case ETH_P_IPX: /* SNAP encapsulation */
277 case ETH_P_ARP:
278 hdr_len += 7;
279 skb_push(skb, 7);
280 skb->data[0] = 0;
281 skb->data[1] = NLPID_SNAP;
282 skb_copy_to_linear_data_offset(skb, 2, wanrouter_oui_ether,
283 sizeof(wanrouter_oui_ether));
284 *((unsigned short*)&skb->data[5]) = htons(type);
285 break;
286
287 default: /* Unknown packet type */
288 printk(KERN_INFO
289 "%s: unsupported Ethertype 0x%04X on interface %s!\n",
290 wanrouter_modname, type, dev->name);
291 hdr_len = -EINVAL;
292 }
293 return hdr_len;
294}
295
296
297/*
298 * Decapsulate packet.
299 *
300 * Return: Ethertype (in network order)
301 * 0 unknown encapsulation
302 *
303 * Notes:
304 * 1. This function may be called on interrupt context.
305 */
306
307
308__be16 wanrouter_type_trans(struct sk_buff *skb, struct net_device *dev)
309{
310 int cnt = skb->data[0] ? 0 : 1; /* there may be a pad present */
311 __be16 ethertype;
312
313 switch (skb->data[cnt]) {
314 case NLPID_IP: /* IP datagramm */
315 ethertype = htons(ETH_P_IP);
316 cnt += 1;
317 break;
318
319 case NLPID_SNAP: /* SNAP encapsulation */
320 if (memcmp(&skb->data[cnt + 1], wanrouter_oui_ether,
321 sizeof(wanrouter_oui_ether))){
322 printk(KERN_INFO
323 "%s: unsupported SNAP OUI %02X-%02X-%02X "
324 "on interface %s!\n", wanrouter_modname,
325 skb->data[cnt+1], skb->data[cnt+2],
326 skb->data[cnt+3], dev->name);
327 return 0;
328 }
329 ethertype = *((__be16*)&skb->data[cnt+4]);
330 cnt += 6;
331 break;
332
333 /* add other protocols, e.g. CLNP, ESIS, ISIS, if needed */
334
335 default:
336 printk(KERN_INFO
337 "%s: unsupported NLPID 0x%02X on interface %s!\n",
338 wanrouter_modname, skb->data[cnt], dev->name);
339 return 0;
340 }
341 skb->protocol = ethertype;
342 skb->pkt_type = PACKET_HOST; /* Physically point to point */
343 skb_pull(skb, cnt);
344 skb_reset_mac_header(skb);
345 return ethertype;
346}
347
348#endif /* 0 */
349
350/*
351 * WAN device IOCTL.
352 * o find WAN device associated with this node
353 * o execute requested action or pass command to the device driver
354 */
355
356long wanrouter_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
357{
358 struct inode *inode = file->f_path.dentry->d_inode;
359 int err = 0;
360 struct proc_dir_entry *dent;
361 struct wan_device *wandev;
362 void __user *data = (void __user *)arg;
363
364 if (!capable(CAP_NET_ADMIN))
365 return -EPERM;
366
367 if ((cmd >> 8) != ROUTER_IOCTL)
368 return -EINVAL;
369
370 dent = PDE(inode);
371 if ((dent == NULL) || (dent->data == NULL))
372 return -EINVAL;
373
374 wandev = dent->data;
375 if (wandev->magic != ROUTER_MAGIC)
376 return -EINVAL;
377
378 mutex_lock(&wanrouter_mutex);
379 switch (cmd) {
380 case ROUTER_SETUP:
381 err = wanrouter_device_setup(wandev, data);
382 break;
383
384 case ROUTER_DOWN:
385 err = wanrouter_device_shutdown(wandev);
386 break;
387
388 case ROUTER_STAT:
389 err = wanrouter_device_stat(wandev, data);
390 break;
391
392 case ROUTER_IFNEW:
393 err = wanrouter_device_new_if(wandev, data);
394 break;
395
396 case ROUTER_IFDEL:
397 err = wanrouter_device_del_if(wandev, data);
398 break;
399
400 case ROUTER_IFSTAT:
401 break;
402
403 default:
404 if ((cmd >= ROUTER_USER) &&
405 (cmd <= ROUTER_USER_MAX) &&
406 wandev->ioctl)
407 err = wandev->ioctl(wandev, cmd, arg);
408 else err = -EINVAL;
409 }
410 mutex_unlock(&wanrouter_mutex);
411 return err;
412}
413
414/*
415 * WAN Driver IOCTL Handlers
416 */
417
418/*
419 * Setup WAN link device.
420 * o verify user address space
421 * o allocate kernel memory and copy configuration data to kernel space
422 * o if configuration data includes extension, copy it to kernel space too
423 * o call driver's setup() entry point
424 */
425
426static int wanrouter_device_setup(struct wan_device *wandev,
427 wandev_conf_t __user *u_conf)
428{
429 void *data = NULL;
430 wandev_conf_t *conf;
431 int err = -EINVAL;
432
433 if (wandev->setup == NULL) { /* Nothing to do ? */
434 printk(KERN_INFO "%s: ERROR, No setup script: wandev->setup()\n",
435 wandev->name);
436 return 0;
437 }
438
439 conf = kmalloc(sizeof(wandev_conf_t), GFP_KERNEL);
440 if (conf == NULL){
441 printk(KERN_INFO "%s: ERROR, Failed to allocate kernel memory !\n",
442 wandev->name);
443 return -ENOBUFS;
444 }
445
446 if (copy_from_user(conf, u_conf, sizeof(wandev_conf_t))) {
447 printk(KERN_INFO "%s: Failed to copy user config data to kernel space!\n",
448 wandev->name);
449 kfree(conf);
450 return -EFAULT;
451 }
452
453 if (conf->magic != ROUTER_MAGIC) {
454 kfree(conf);
455 printk(KERN_INFO "%s: ERROR, Invalid MAGIC Number\n",
456 wandev->name);
457 return -EINVAL;
458 }
459
460 if (conf->data_size && conf->data) {
461 if (conf->data_size > 128000) {
462 printk(KERN_INFO
463 "%s: ERROR, Invalid firmware data size %i !\n",
464 wandev->name, conf->data_size);
465 kfree(conf);
466 return -EINVAL;
467 }
468
469 data = vmalloc(conf->data_size);
470 if (!data) {
471 printk(KERN_INFO
472 "%s: ERROR, Failed allocate kernel memory !\n",
473 wandev->name);
474 kfree(conf);
475 return -ENOBUFS;
476 }
477 if (!copy_from_user(data, conf->data, conf->data_size)) {
478 conf->data = data;
479 err = wandev->setup(wandev, conf);
480 } else {
481 printk(KERN_INFO
482 "%s: ERROR, Failed to copy from user data !\n",
483 wandev->name);
484 err = -EFAULT;
485 }
486 vfree(data);
487 } else {
488 printk(KERN_INFO
489 "%s: ERROR, No firmware found ! Firmware size = %i !\n",
490 wandev->name, conf->data_size);
491 }
492
493 kfree(conf);
494 return err;
495}
496
497/*
498 * Shutdown WAN device.
499 * o delete all not opened logical channels for this device
500 * o call driver's shutdown() entry point
501 */
502
503static int wanrouter_device_shutdown(struct wan_device *wandev)
504{
505 struct net_device *dev;
506 int err=0;
507
508 if (wandev->state == WAN_UNCONFIGURED)
509 return 0;
510
511 printk(KERN_INFO "\n%s: Shutting Down!\n",wandev->name);
512
513 for (dev = wandev->dev; dev;) {
514 err = wanrouter_delete_interface(wandev, dev->name);
515 if (err)
516 return err;
517 /* The above function deallocates the current dev
518 * structure. Therefore, we cannot use netdev_priv(dev)
519 * as the next element: wandev->dev points to the
520 * next element */
521 dev = wandev->dev;
522 }
523
524 if (wandev->ndev)
525 return -EBUSY; /* there are opened interfaces */
526
527 if (wandev->shutdown)
528 err=wandev->shutdown(wandev);
529
530 return err;
531}
532
533/*
534 * Get WAN device status & statistics.
535 */
536
537static int wanrouter_device_stat(struct wan_device *wandev,
538 wandev_stat_t __user *u_stat)
539{
540 wandev_stat_t stat;
541
542 memset(&stat, 0, sizeof(stat));
543
544 /* Ask device driver to update device statistics */
545 if ((wandev->state != WAN_UNCONFIGURED) && wandev->update)
546 wandev->update(wandev);
547
548 /* Fill out structure */
549 stat.ndev = wandev->ndev;
550 stat.state = wandev->state;
551
552 if (copy_to_user(u_stat, &stat, sizeof(stat)))
553 return -EFAULT;
554
555 return 0;
556}
557
558/*
559 * Create new WAN interface.
560 * o verify user address space
561 * o copy configuration data to kernel address space
562 * o allocate network interface data space
563 * o call driver's new_if() entry point
564 * o make sure there is no interface name conflict
565 * o register network interface
566 */
567
568static int wanrouter_device_new_if(struct wan_device *wandev,
569 wanif_conf_t __user *u_conf)
570{
571 wanif_conf_t *cnf;
572 struct net_device *dev = NULL;
573 int err;
574
575 if ((wandev->state == WAN_UNCONFIGURED) || (wandev->new_if == NULL))
576 return -ENODEV;
577
578 cnf = kmalloc(sizeof(wanif_conf_t), GFP_KERNEL);
579 if (!cnf)
580 return -ENOBUFS;
581
582 err = -EFAULT;
583 if (copy_from_user(cnf, u_conf, sizeof(wanif_conf_t)))
584 goto out;
585
586 err = -EINVAL;
587 if (cnf->magic != ROUTER_MAGIC)
588 goto out;
589
590 if (cnf->config_id == WANCONFIG_MPPP) {
591 printk(KERN_INFO "%s: Wanpipe Mulit-Port PPP support has not been compiled in!\n",
592 wandev->name);
593 err = -EPROTONOSUPPORT;
594 goto out;
595 } else {
596 err = wandev->new_if(wandev, dev, cnf);
597 }
598
599 if (!err) {
600 /* Register network interface. This will invoke init()
601 * function supplied by the driver. If device registered
602 * successfully, add it to the interface list.
603 */
604
605#ifdef WANDEBUG
606 printk(KERN_INFO "%s: registering interface %s...\n",
607 wanrouter_modname, dev->name);
608#endif
609
610 err = register_netdev(dev);
611 if (!err) {
612 struct net_device *slave = NULL;
613 unsigned long smp_flags=0;
614
615 lock_adapter_irq(&wandev->lock, &smp_flags);
616
617 if (wandev->dev == NULL) {
618 wandev->dev = dev;
619 } else {
620 for (slave=wandev->dev;
621 DEV_TO_SLAVE(slave);
622 slave = DEV_TO_SLAVE(slave))
623 DEV_TO_SLAVE(slave) = dev;
624 }
625 ++wandev->ndev;
626
627 unlock_adapter_irq(&wandev->lock, &smp_flags);
628 err = 0; /* done !!! */
629 goto out;
630 }
631 if (wandev->del_if)
632 wandev->del_if(wandev, dev);
633 free_netdev(dev);
634 }
635
636out:
637 kfree(cnf);
638 return err;
639}
640
641
642/*
643 * Delete WAN logical channel.
644 * o verify user address space
645 * o copy configuration data to kernel address space
646 */
647
648static int wanrouter_device_del_if(struct wan_device *wandev, char __user *u_name)
649{
650 char name[WAN_IFNAME_SZ + 1];
651 int err = 0;
652
653 if (wandev->state == WAN_UNCONFIGURED)
654 return -ENODEV;
655
656 memset(name, 0, sizeof(name));
657
658 if (copy_from_user(name, u_name, WAN_IFNAME_SZ))
659 return -EFAULT;
660
661 err = wanrouter_delete_interface(wandev, name);
662 if (err)
663 return err;
664
665 /* If last interface being deleted, shutdown card
666 * This helps with administration at leaf nodes
667 * (You can tell if the person at the other end of the phone
668 * has an interface configured) and avoids DoS vulnerabilities
669 * in binary driver files - this fixes a problem with the current
670 * Sangoma driver going into strange states when all the network
671 * interfaces are deleted and the link irrecoverably disconnected.
672 */
673
674 if (!wandev->ndev && wandev->shutdown)
675 err = wandev->shutdown(wandev);
676
677 return err;
678}
679
680/*
681 * Miscellaneous Functions
682 */
683
684/*
685 * Find WAN device by name.
686 * Return pointer to the WAN device data space or NULL if device not found.
687 */
688
689static struct wan_device *wanrouter_find_device(char *name)
690{
691 struct wan_device *wandev;
692
693 for (wandev = wanrouter_router_devlist;
694 wandev && strcmp(wandev->name, name);
695 wandev = wandev->next);
696 return wandev;
697}
698
699/*
700 * Delete WAN logical channel identified by its name.
701 * o find logical channel by its name
702 * o call driver's del_if() entry point
703 * o unregister network interface
704 * o unlink channel data space from linked list of channels
705 * o release channel data space
706 *
707 * Return: 0 success
708 * -ENODEV channel not found.
709 * -EBUSY interface is open
710 *
711 * Note: If (force != 0), then device will be destroyed even if interface
712 * associated with it is open. It's caller's responsibility to make
713 * sure that opened interfaces are not removed!
714 */
715
716static int wanrouter_delete_interface(struct wan_device *wandev, char *name)
717{
718 struct net_device *dev = NULL, *prev = NULL;
719 unsigned long smp_flags=0;
720
721 lock_adapter_irq(&wandev->lock, &smp_flags);
722 dev = wandev->dev;
723 prev = NULL;
724 while (dev && strcmp(name, dev->name)) {
725 struct net_device **slave = netdev_priv(dev);
726 prev = dev;
727 dev = *slave;
728 }
729 unlock_adapter_irq(&wandev->lock, &smp_flags);
730
731 if (dev == NULL)
732 return -ENODEV; /* interface not found */
733
734 if (netif_running(dev))
735 return -EBUSY; /* interface in use */
736
737 if (wandev->del_if)
738 wandev->del_if(wandev, dev);
739
740 lock_adapter_irq(&wandev->lock, &smp_flags);
741 if (prev) {
742 struct net_device **prev_slave = netdev_priv(prev);
743 struct net_device **slave = netdev_priv(dev);
744
745 *prev_slave = *slave;
746 } else {
747 struct net_device **slave = netdev_priv(dev);
748 wandev->dev = *slave;
749 }
750 --wandev->ndev;
751 unlock_adapter_irq(&wandev->lock, &smp_flags);
752
753 printk(KERN_INFO "%s: unregistering '%s'\n", wandev->name, dev->name);
754
755 unregister_netdev(dev);
756
757 free_netdev(dev);
758
759 return 0;
760}
761
762static void lock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags)
763 __acquires(lock)
764{
765 spin_lock_irqsave(lock, *smp_flags);
766}
767
768
769static void unlock_adapter_irq(spinlock_t *lock, unsigned long *smp_flags)
770 __releases(lock)
771{
772 spin_unlock_irqrestore(lock, *smp_flags);
773}
774
775EXPORT_SYMBOL(register_wan_device);
776EXPORT_SYMBOL(unregister_wan_device);
777
778MODULE_LICENSE("GPL");
779
780/*
781 * End
782 */
diff --git a/net/wanrouter/wanproc.c b/net/wanrouter/wanproc.c
deleted file mode 100644
index c43612ee96bb..000000000000
--- a/net/wanrouter/wanproc.c
+++ /dev/null
@@ -1,380 +0,0 @@
1/*****************************************************************************
2* wanproc.c WAN Router Module. /proc filesystem interface.
3*
4* This module is completely hardware-independent and provides
5* access to the router using Linux /proc filesystem.
6*
7* Author: Gideon Hack
8*
9* Copyright: (c) 1995-1999 Sangoma Technologies Inc.
10*
11* This program is free software; you can redistribute it and/or
12* modify it under the terms of the GNU General Public License
13* as published by the Free Software Foundation; either version
14* 2 of the License, or (at your option) any later version.
15* ============================================================================
16* Jun 02, 1999 Gideon Hack Updates for Linux 2.2.X kernels.
17* Jun 29, 1997 Alan Cox Merged with 1.0.3 vendor code
18* Jan 29, 1997 Gene Kozin v1.0.1. Implemented /proc read routines
19* Jan 30, 1997 Alan Cox Hacked around for 2.1
20* Dec 13, 1996 Gene Kozin Initial version (based on Sangoma's WANPIPE)
21*****************************************************************************/
22
23#include <linux/init.h> /* __initfunc et al. */
24#include <linux/stddef.h> /* offsetof(), etc. */
25#include <linux/errno.h> /* return codes */
26#include <linux/kernel.h>
27#include <linux/module.h>
28#include <linux/wanrouter.h> /* WAN router API definitions */
29#include <linux/seq_file.h>
30#include <linux/mutex.h>
31
32#include <net/net_namespace.h>
33#include <asm/io.h>
34
35#define PROC_STATS_FORMAT "%30s: %12lu\n"
36
37/****** Defines and Macros **************************************************/
38
39#define PROT_DECODE(prot) ((prot == WANCONFIG_FR) ? " FR" :\
40 (prot == WANCONFIG_X25) ? " X25" : \
41 (prot == WANCONFIG_PPP) ? " PPP" : \
42 (prot == WANCONFIG_CHDLC) ? " CHDLC": \
43 (prot == WANCONFIG_MPPP) ? " MPPP" : \
44 " Unknown" )
45
46/****** Function Prototypes *************************************************/
47
48#ifdef CONFIG_PROC_FS
49
50/* Miscellaneous */
51
52/*
53 * Structures for interfacing with the /proc filesystem.
54 * Router creates its own directory /proc/net/router with the following
55 * entries:
56 * config device configuration
57 * status global device statistics
58 * <device> entry for each WAN device
59 */
60
61/*
62 * Generic /proc/net/router/<file> file and inode operations
63 */
64
65/*
66 * /proc/net/router
67 */
68
69static DEFINE_MUTEX(config_mutex);
70static struct proc_dir_entry *proc_router;
71
72/* Strings */
73
74/*
75 * Interface functions
76 */
77
78/****** Proc filesystem entry points ****************************************/
79
80/*
81 * Iterator
82 */
83static void *r_start(struct seq_file *m, loff_t *pos)
84{
85 struct wan_device *wandev;
86 loff_t l = *pos;
87
88 mutex_lock(&config_mutex);
89 if (!l--)
90 return SEQ_START_TOKEN;
91 for (wandev = wanrouter_router_devlist; l-- && wandev;
92 wandev = wandev->next)
93 ;
94 return wandev;
95}
96
97static void *r_next(struct seq_file *m, void *v, loff_t *pos)
98{
99 struct wan_device *wandev = v;
100 (*pos)++;
101 return (v == SEQ_START_TOKEN) ? wanrouter_router_devlist : wandev->next;
102}
103
104static void r_stop(struct seq_file *m, void *v)
105{
106 mutex_unlock(&config_mutex);
107}
108
109static int config_show(struct seq_file *m, void *v)
110{
111 struct wan_device *p = v;
112 if (v == SEQ_START_TOKEN) {
113 seq_puts(m, "Device name | port |IRQ|DMA| mem.addr |"
114 "mem.size|option1|option2|option3|option4\n");
115 return 0;
116 }
117 if (!p->state)
118 return 0;
119 seq_printf(m, "%-15s|0x%-4X|%3u|%3u| 0x%-8lX |0x%-6X|%7u|%7u|%7u|%7u\n",
120 p->name, p->ioport, p->irq, p->dma, p->maddr, p->msize,
121 p->hw_opt[0], p->hw_opt[1], p->hw_opt[2], p->hw_opt[3]);
122 return 0;
123}
124
125static int status_show(struct seq_file *m, void *v)
126{
127 struct wan_device *p = v;
128 if (v == SEQ_START_TOKEN) {
129 seq_puts(m, "Device name |protocol|station|interface|"
130 "clocking|baud rate| MTU |ndev|link state\n");
131 return 0;
132 }
133 if (!p->state)
134 return 0;
135 seq_printf(m, "%-15s|%-8s| %-7s| %-9s|%-8s|%9u|%5u|%3u |",
136 p->name,
137 PROT_DECODE(p->config_id),
138 p->config_id == WANCONFIG_FR ?
139 (p->station ? "Node" : "CPE") :
140 (p->config_id == WANCONFIG_X25 ?
141 (p->station ? "DCE" : "DTE") :
142 ("N/A")),
143 p->interface ? "V.35" : "RS-232",
144 p->clocking ? "internal" : "external",
145 p->bps,
146 p->mtu,
147 p->ndev);
148
149 switch (p->state) {
150 case WAN_UNCONFIGURED:
151 seq_printf(m, "%-12s\n", "unconfigured");
152 break;
153 case WAN_DISCONNECTED:
154 seq_printf(m, "%-12s\n", "disconnected");
155 break;
156 case WAN_CONNECTING:
157 seq_printf(m, "%-12s\n", "connecting");
158 break;
159 case WAN_CONNECTED:
160 seq_printf(m, "%-12s\n", "connected");
161 break;
162 default:
163 seq_printf(m, "%-12s\n", "invalid");
164 break;
165 }
166 return 0;
167}
168
169static const struct seq_operations config_op = {
170 .start = r_start,
171 .next = r_next,
172 .stop = r_stop,
173 .show = config_show,
174};
175
176static const struct seq_operations status_op = {
177 .start = r_start,
178 .next = r_next,
179 .stop = r_stop,
180 .show = status_show,
181};
182
183static int config_open(struct inode *inode, struct file *file)
184{
185 return seq_open(file, &config_op);
186}
187
188static int status_open(struct inode *inode, struct file *file)
189{
190 return seq_open(file, &status_op);
191}
192
193static const struct file_operations config_fops = {
194 .owner = THIS_MODULE,
195 .open = config_open,
196 .read = seq_read,
197 .llseek = seq_lseek,
198 .release = seq_release,
199};
200
201static const struct file_operations status_fops = {
202 .owner = THIS_MODULE,
203 .open = status_open,
204 .read = seq_read,
205 .llseek = seq_lseek,
206 .release = seq_release,
207};
208
209static int wandev_show(struct seq_file *m, void *v)
210{
211 struct wan_device *wandev = m->private;
212
213 if (wandev->magic != ROUTER_MAGIC)
214 return 0;
215
216 if (!wandev->state) {
217 seq_puts(m, "device is not configured!\n");
218 return 0;
219 }
220
221 /* Update device statistics */
222 if (wandev->update) {
223 int err = wandev->update(wandev);
224 if (err == -EAGAIN) {
225 seq_puts(m, "Device is busy!\n");
226 return 0;
227 }
228 if (err) {
229 seq_puts(m, "Device is not configured!\n");
230 return 0;
231 }
232 }
233
234 seq_printf(m, PROC_STATS_FORMAT,
235 "total packets received", wandev->stats.rx_packets);
236 seq_printf(m, PROC_STATS_FORMAT,
237 "total packets transmitted", wandev->stats.tx_packets);
238 seq_printf(m, PROC_STATS_FORMAT,
239 "total bytes received", wandev->stats.rx_bytes);
240 seq_printf(m, PROC_STATS_FORMAT,
241 "total bytes transmitted", wandev->stats.tx_bytes);
242 seq_printf(m, PROC_STATS_FORMAT,
243 "bad packets received", wandev->stats.rx_errors);
244 seq_printf(m, PROC_STATS_FORMAT,
245 "packet transmit problems", wandev->stats.tx_errors);
246 seq_printf(m, PROC_STATS_FORMAT,
247 "received frames dropped", wandev->stats.rx_dropped);
248 seq_printf(m, PROC_STATS_FORMAT,
249 "transmit frames dropped", wandev->stats.tx_dropped);
250 seq_printf(m, PROC_STATS_FORMAT,
251 "multicast packets received", wandev->stats.multicast);
252 seq_printf(m, PROC_STATS_FORMAT,
253 "transmit collisions", wandev->stats.collisions);
254 seq_printf(m, PROC_STATS_FORMAT,
255 "receive length errors", wandev->stats.rx_length_errors);
256 seq_printf(m, PROC_STATS_FORMAT,
257 "receiver overrun errors", wandev->stats.rx_over_errors);
258 seq_printf(m, PROC_STATS_FORMAT,
259 "CRC errors", wandev->stats.rx_crc_errors);
260 seq_printf(m, PROC_STATS_FORMAT,
261 "frame format errors (aborts)", wandev->stats.rx_frame_errors);
262 seq_printf(m, PROC_STATS_FORMAT,
263 "receiver fifo overrun", wandev->stats.rx_fifo_errors);
264 seq_printf(m, PROC_STATS_FORMAT,
265 "receiver missed packet", wandev->stats.rx_missed_errors);
266 seq_printf(m, PROC_STATS_FORMAT,
267 "aborted frames transmitted", wandev->stats.tx_aborted_errors);
268 return 0;
269}
270
271static int wandev_open(struct inode *inode, struct file *file)
272{
273 return single_open(file, wandev_show, PDE(inode)->data);
274}
275
276static const struct file_operations wandev_fops = {
277 .owner = THIS_MODULE,
278 .open = wandev_open,
279 .read = seq_read,
280 .llseek = seq_lseek,
281 .release = single_release,
282 .unlocked_ioctl = wanrouter_ioctl,
283};
284
285/*
286 * Initialize router proc interface.
287 */
288
289int __init wanrouter_proc_init(void)
290{
291 struct proc_dir_entry *p;
292 proc_router = proc_mkdir(ROUTER_NAME, init_net.proc_net);
293 if (!proc_router)
294 goto fail;
295
296 p = proc_create("config", S_IRUGO, proc_router, &config_fops);
297 if (!p)
298 goto fail_config;
299 p = proc_create("status", S_IRUGO, proc_router, &status_fops);
300 if (!p)
301 goto fail_stat;
302 return 0;
303fail_stat:
304 remove_proc_entry("config", proc_router);
305fail_config:
306 remove_proc_entry(ROUTER_NAME, init_net.proc_net);
307fail:
308 return -ENOMEM;
309}
310
311/*
312 * Clean up router proc interface.
313 */
314
315void wanrouter_proc_cleanup(void)
316{
317 remove_proc_entry("config", proc_router);
318 remove_proc_entry("status", proc_router);
319 remove_proc_entry(ROUTER_NAME, init_net.proc_net);
320}
321
322/*
323 * Add directory entry for WAN device.
324 */
325
326int wanrouter_proc_add(struct wan_device* wandev)
327{
328 if (wandev->magic != ROUTER_MAGIC)
329 return -EINVAL;
330
331 wandev->dent = proc_create(wandev->name, S_IRUGO,
332 proc_router, &wandev_fops);
333 if (!wandev->dent)
334 return -ENOMEM;
335 wandev->dent->data = wandev;
336 return 0;
337}
338
339/*
340 * Delete directory entry for WAN device.
341 */
342int wanrouter_proc_delete(struct wan_device* wandev)
343{
344 if (wandev->magic != ROUTER_MAGIC)
345 return -EINVAL;
346 remove_proc_entry(wandev->name, proc_router);
347 return 0;
348}
349
350#else
351
352/*
353 * No /proc - output stubs
354 */
355
356int __init wanrouter_proc_init(void)
357{
358 return 0;
359}
360
361void wanrouter_proc_cleanup(void)
362{
363}
364
365int wanrouter_proc_add(struct wan_device *wandev)
366{
367 return 0;
368}
369
370int wanrouter_proc_delete(struct wan_device *wandev)
371{
372 return 0;
373}
374
375#endif
376
377/*
378 * End
379 */
380
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-26 23:05:15 -0400