File: /usr/src/linux/drivers/net/wan/sdlamain.c
1 /****************************************************************************
2 * sdlamain.c WANPIPE(tm) Multiprotocol WAN Link Driver. Main module.
3 *
4 * Author: Nenad Corbic <ncorbic@sangoma.com>
5 * Gideon Hack
6 *
7 * Copyright: (c) 1995-2000 Sangoma Technologies Inc.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
13 * ============================================================================
14 * Dec 22, 2000 Nenad Corbic Updated for 2.4.X kernels.
15 * Removed the polling routine.
16 * Nov 13, 2000 Nenad Corbic Added hw probing on module load and dynamic
17 * device allocation.
18 * Nov 7, 2000 Nenad Corbic Fixed the Multi-Port PPP for kernels
19 * 2.2.16 and above.
20 * Aug 2, 2000 Nenad Corbic Block the Multi-Port PPP from running on
21 * kernels 2.2.16 or greater. The SyncPPP
22 * has changed.
23 * Jul 25, 2000 Nenad Corbic Updated the Piggiback support for MultPPPP.
24 * Jul 13, 2000 Nenad Corbic Added Multi-PPP support.
25 * Feb 02, 2000 Nenad Corbic Fixed up piggyback probing and selection.
26 * Sep 23, 1999 Nenad Corbic Added support for SMP
27 * Sep 13, 1999 Nenad Corbic Each port is treated as a separate device.
28 * Jun 02, 1999 Gideon Hack Added support for the S514 adapter.
29 * Updates for Linux 2.2.X kernels.
30 * Sep 17, 1998 Jaspreet Singh Updated for 2.1.121+ kernel
31 * Nov 28, 1997 Jaspreet Singh Changed DRV_RELEASE to 1
32 * Nov 10, 1997 Jaspreet Singh Changed sti() to restore_flags();
33 * Nov 06, 1997 Jaspreet Singh Changed DRV_VERSION to 4 and DRV_RELEASE to 0
34 * Oct 20, 1997 Jaspreet Singh Modified sdla_isr routine so that card->in_isr
35 * assignments are taken out and placed in the
36 * sdla_ppp.c, sdla_fr.c and sdla_x25.c isr
37 * routines. Took out 'wandev->tx_int_enabled' and
38 * replaced it with 'wandev->enable_tx_int'.
39 * May 29, 1997 Jaspreet Singh Flow Control Problem
40 * added "wandev->tx_int_enabled=1" line in the
41 * init module. This line intializes the flag for
42 * preventing Interrupt disabled with device set to
43 * busy
44 * Jan 15, 1997 Gene Kozin Version 3.1.0
45 * o added UDP management stuff
46 * Jan 02, 1997 Gene Kozin Initial version.
47 *****************************************************************************/
48
49 #include <linux/version.h>
50 #include <linux/config.h> /* OS configuration options */
51 #include <linux/stddef.h> /* offsetof(), etc. */
52 #include <linux/errno.h> /* return codes */
53 #include <linux/string.h> /* inline memset(), etc. */
54 #include <linux/slab.h> /* kmalloc(), kfree() */
55 #include <linux/kernel.h> /* printk(), and other useful stuff */
56 #include <linux/module.h> /* support for loadable modules */
57 #include <linux/ioport.h> /* request_region(), release_region() */
58 #include <linux/wanrouter.h> /* WAN router definitions */
59 #include <linux/wanpipe.h> /* WANPIPE common user API definitions */
60
61 #include <linux/in.h>
62 #include <asm/io.h> /* phys_to_virt() */
63 #include <linux/pci.h>
64 #include <linux/sdlapci.h>
65 #include <linux/if_wanpipe_common.h>
66
67 #if defined(LINUX_2_4)
68
69 #include <asm/uaccess.h> /* kernel <-> user copy */
70 #include <linux/inetdevice.h>
71 #define netdevice_t struct net_device
72
73 #elif defined(LINUX_2_1)
74
75 #include <asm/uaccess.h> /* kernel <-> user copy */
76 #include <linux/inetdevice.h>
77 #define netdevice_t struct device
78
79 #else
80
81 #include <asm/segment.h>
82 #define devinet_ioctl(x,y) dev_ioctl(x,y)
83 #define netdevice_t struct device
84 #define test_and_set_bit set_bit
85 typedef unsigned long mm_segment_t;
86 #endif
87
88 #include <linux/ip.h>
89 #include <net/route.h>
90
91 #define KMEM_SAFETYZONE 8
92
93
94 #ifndef CONFIG_WANPIPE_FR
95 #define wpf_init(a,b) (-EPROTONOSUPPORT)
96 #endif
97
98 #ifndef CONFIG_WANPIPE_CHDLC
99 #define wpc_init(a,b) (-EPROTONOSUPPORT)
100 #endif
101
102 #ifndef CONFIG_WANPIPE_X25
103 #define wpx_init(a,b) (-EPROTONOSUPPORT)
104 #endif
105
106 #ifndef CONFIG_WANPIPE_PPP
107 #define wpp_init(a,b) (-EPROTONOSUPPORT)
108 #endif
109
110 #ifndef CONFIG_WANPIPE_MULTPPP
111 #define wsppp_init(a,b) (-EPROTONOSUPPORT)
112 #endif
113
114
115 /***********FOR DEBUGGING PURPOSES*********************************************
116 static void * dbg_kmalloc(unsigned int size, int prio, int line) {
117 int i = 0;
118 void * v = kmalloc(size+sizeof(unsigned int)+2*KMEM_SAFETYZONE*8,prio);
119 char * c1 = v;
120 c1 += sizeof(unsigned int);
121 *((unsigned int *)v) = size;
122
123 for (i = 0; i < KMEM_SAFETYZONE; i++) {
124 c1[0] = 'D'; c1[1] = 'E'; c1[2] = 'A'; c1[3] = 'D';
125 c1[4] = 'B'; c1[5] = 'E'; c1[6] = 'E'; c1[7] = 'F';
126 c1 += 8;
127 }
128 c1 += size;
129 for (i = 0; i < KMEM_SAFETYZONE; i++) {
130 c1[0] = 'M'; c1[1] = 'U'; c1[2] = 'N'; c1[3] = 'G';
131 c1[4] = 'W'; c1[5] = 'A'; c1[6] = 'L'; c1[7] = 'L';
132 c1 += 8;
133 }
134 v = ((char *)v) + sizeof(unsigned int) + KMEM_SAFETYZONE*8;
135 printk(KERN_INFO "line %d kmalloc(%d,%d) = %p\n",line,size,prio,v);
136 return v;
137 }
138 static void dbg_kfree(void * v, int line) {
139 unsigned int * sp = (unsigned int *)(((char *)v) - (sizeof(unsigned int) + KMEM_SAFETYZONE*8));
140 unsigned int size = *sp;
141 char * c1 = ((char *)v) - KMEM_SAFETYZONE*8;
142 int i = 0;
143 for (i = 0; i < KMEM_SAFETYZONE; i++) {
144 if ( c1[0] != 'D' || c1[1] != 'E' || c1[2] != 'A' || c1[3] != 'D'
145 || c1[4] != 'B' || c1[5] != 'E' || c1[6] != 'E' || c1[7] != 'F') {
146 printk(KERN_INFO "kmalloced block at %p has been corrupted (underrun)!\n",v);
147 printk(KERN_INFO " %4x: %2x %2x %2x %2x %2x %2x %2x %2x\n", i*8,
148 c1[0],c1[1],c1[2],c1[3],c1[4],c1[5],c1[6],c1[7] );
149 }
150 c1 += 8;
151 }
152 c1 += size;
153 for (i = 0; i < KMEM_SAFETYZONE; i++) {
154 if ( c1[0] != 'M' || c1[1] != 'U' || c1[2] != 'N' || c1[3] != 'G'
155 || c1[4] != 'W' || c1[5] != 'A' || c1[6] != 'L' || c1[7] != 'L'
156 ) {
157 printk(KERN_INFO "kmalloced block at %p has been corrupted (overrun):\n",v);
158 printk(KERN_INFO " %4x: %2x %2x %2x %2x %2x %2x %2x %2x\n", i*8,
159 c1[0],c1[1],c1[2],c1[3],c1[4],c1[5],c1[6],c1[7] );
160 }
161 c1 += 8;
162 }
163 printk(KERN_INFO "line %d kfree(%p)\n",line,v);
164 v = ((char *)v) - (sizeof(unsigned int) + KMEM_SAFETYZONE*8);
165 kfree(v);
166 }
167
168 #define kmalloc(x,y) dbg_kmalloc(x,y,__LINE__)
169 #define kfree(x) dbg_kfree(x,__LINE__)
170 ******************************************************************************/
171
172
173
174 /****** Defines & Macros ****************************************************/
175
176 #ifdef _DEBUG_
177 #define STATIC
178 #else
179 #define STATIC static
180 #endif
181
182 #define DRV_VERSION 5 /* version number */
183 #define DRV_RELEASE 0 /* release (minor version) number */
184 #define MAX_CARDS 16 /* max number of adapters */
185
186 #ifndef CONFIG_WANPIPE_CARDS /* configurable option */
187 #define CONFIG_WANPIPE_CARDS 1
188 #endif
189
190 #define CMD_OK 0 /* normal firmware return code */
191 #define CMD_TIMEOUT 0xFF /* firmware command timed out */
192 #define MAX_CMD_RETRY 10 /* max number of firmware retries */
193 /****** Function Prototypes *************************************************/
194
195 extern void disable_irq(unsigned int);
196 extern void enable_irq(unsigned int);
197
198 /* Module entry points */
199 int init_module (void);
200 void cleanup_module (void);
201
202 /* WAN link driver entry points */
203 static int setup (wan_device_t* wandev, wandev_conf_t* conf);
204 static int shutdown (wan_device_t* wandev);
205 static int ioctl (wan_device_t* wandev, unsigned cmd, unsigned long arg);
206
207 /* IOCTL handlers */
208 static int ioctl_dump (sdla_t* card, sdla_dump_t* u_dump);
209 static int ioctl_exec (sdla_t* card, sdla_exec_t* u_exec, int);
210
211 /* Miscellaneous functions */
212 STATIC void sdla_isr (int irq, void* dev_id, struct pt_regs *regs);
213 static void release_hw (sdla_t *card);
214 static void run_wanpipe_tq (unsigned long);
215
216 static int check_s508_conflicts (sdla_t* card,wandev_conf_t* conf, int*);
217 static int check_s514_conflicts (sdla_t* card,wandev_conf_t* conf, int*);
218
219
220 /****** Global Data **********************************************************
221 * Note: All data must be explicitly initialized!!!
222 */
223
224 /* private data */
225 static char drvname[] = "wanpipe";
226 static char fullname[] = "WANPIPE(tm) Multiprotocol Driver";
227 static char copyright[] = "(c) 1995-2000 Sangoma Technologies Inc.";
228 static int ncards = 0;
229 static sdla_t* card_array = NULL; /* adapter data space */
230
231 /* Wanpipe's own task queue, used for all API's.
232 * All protocol specific tasks will be instered
233 * into "wanpipe_tq_custom" task_queue.
234
235 * On each rx_interrupt, the whole task queue
236 * (wanpipe_tq_custom) will be queued into
237 * IMMEDIATE_BH via wanpipe_mark_bh() call.
238
239 * The IMMEDIATE_BH will execute run_wanpipe_tq()
240 * function, which will execute all pending,
241 * tasks in wanpipe_tq_custom queue */
242
243 #ifdef LINUX_2_4
244 DECLARE_TASK_QUEUE(wanpipe_tq_custom);
245 static struct tq_struct wanpipe_tq_task =
246 {
247 routine: (void (*)(void *)) run_wanpipe_tq,
248 data: &wanpipe_tq_custom
249 };
250 #else
251 static struct tq_struct *wanpipe_tq_custom = NULL;
252 static struct tq_struct wanpipe_tq_task =
253 {
254 NULL,
255 0,
256 (void *)(void *) run_wanpipe_tq,
257 &wanpipe_tq_custom
258 };
259 #endif
260
261 static int wanpipe_bh_critical=0;
262
263 /******* Kernel Loadable Module Entry Points ********************************/
264
265 /*============================================================================
266 * Module 'insert' entry point.
267 * o print announcement
268 * o allocate adapter data space
269 * o initialize static data
270 * o register all cards with WAN router
271 * o calibrate SDLA shared memory access delay.
272 *
273 * Return: 0 Ok
274 * < 0 error.
275 * Context: process
276 */
277
278 #ifdef MODULE
279 int init_module (void)
280 #else
281 int wanpipe_init(void)
282 #endif
283 {
284 int cnt, err = 0;
285
286 printk(KERN_INFO "%s v%u.%u %s\n",
287 fullname, DRV_VERSION, DRV_RELEASE, copyright);
288
289 /* Probe for wanpipe cards and return the number found */
290 printk(KERN_INFO "wanpipe: Probing for WANPIPE hardware.\n");
291 ncards = wanpipe_hw_probe();
292 if (ncards){
293 printk(KERN_INFO "wanpipe: Allocating maximum %i devices: wanpipe%i - wanpipe%i.\n",ncards,1,ncards);
294 }else{
295 printk(KERN_INFO "wanpipe: No S514/S508 cards found, unloading modules!\n");
296 return -ENODEV;
297 }
298
299 /* Verify number of cards and allocate adapter data space */
300 card_array = kmalloc(sizeof(sdla_t) * ncards, GFP_KERNEL);
301 if (card_array == NULL)
302 return -ENOMEM;
303
304 memset(card_array, 0, sizeof(sdla_t) * ncards);
305
306 /* Register adapters with WAN router */
307 for (cnt = 0; cnt < ncards; ++ cnt) {
308 sdla_t* card = &card_array[cnt];
309 wan_device_t* wandev = &card->wandev;
310
311 card->next = NULL;
312 sprintf(card->devname, "%s%d", drvname, cnt + 1);
313 wandev->magic = ROUTER_MAGIC;
314 wandev->name = card->devname;
315 wandev->private = card;
316 wandev->enable_tx_int = 0;
317 wandev->setup = &setup;
318 wandev->shutdown = &shutdown;
319 wandev->ioctl = &ioctl;
320 err = register_wan_device(wandev);
321 if (err) {
322 printk(KERN_INFO
323 "%s: %s registration failed with error %d!\n",
324 drvname, card->devname, err);
325 break;
326 }
327 }
328 if (cnt){
329 ncards = cnt; /* adjust actual number of cards */
330 }else {
331 kfree(card_array);
332 printk(KERN_INFO "IN Init Module: NO Cards registered\n");
333 err = -ENODEV;
334 }
335
336 return err;
337 }
338
339 #ifdef MODULE
340 /*============================================================================
341 * Module 'remove' entry point.
342 * o unregister all adapters from the WAN router
343 * o release all remaining system resources
344 */
345 void cleanup_module (void)
346 {
347 int i;
348
349 if (!ncards)
350 return;
351
352 for (i = 0; i < ncards; ++i) {
353 sdla_t* card = &card_array[i];
354 unregister_wan_device(card->devname);
355 }
356 kfree(card_array);
357
358 printk(KERN_INFO "\nwanpipe: WANPIPE Modules Unloaded.\n");
359 }
360
361 #endif
362
363 /******* WAN Device Driver Entry Points *************************************/
364
365 /*============================================================================
366 * Setup/configure WAN link driver.
367 * o check adapter state
368 * o make sure firmware is present in configuration
369 * o make sure I/O port and IRQ are specified
370 * o make sure I/O region is available
371 * o allocate interrupt vector
372 * o setup SDLA hardware
373 * o call appropriate routine to perform protocol-specific initialization
374 * o mark I/O region as used
375 * o if this is the first active card, then schedule background task
376 *
377 * This function is called when router handles ROUTER_SETUP IOCTL. The
378 * configuration structure is in kernel memory (including extended data, if
379 * any).
380 */
381
382 static int setup (wan_device_t* wandev, wandev_conf_t* conf)
383 {
384 sdla_t* card;
385 int err = 0;
386 int irq=0;
387
388 /* Sanity checks */
389 if ((wandev == NULL) || (wandev->private == NULL) || (conf == NULL)){
390 printk(KERN_INFO
391 "%s: Failed Sdlamain Setup wandev %u, card %u, conf %u !\n",
392 wandev->name,
393 (unsigned int)wandev,(unsigned int)wandev->private,
394 (unsigned int)conf);
395 return -EFAULT;
396 }
397
398 printk(KERN_INFO "%s: Starting WAN Setup\n", wandev->name);
399
400 card = wandev->private;
401 if (wandev->state != WAN_UNCONFIGURED){
402 printk(KERN_INFO "%s: failed sdlamain setup, busy!\n",
403 wandev->name);
404 return -EBUSY; /* already configured */
405 }
406
407 printk(KERN_INFO "\nProcessing WAN device %s...\n", wandev->name);
408
409 /* Initialize the counters for each wandev
410 * Used for counting number of times new_if and
411 * del_if get called.
412 */
413 wandev->del_if_cnt = 0;
414 wandev->new_if_cnt = 0;
415 wandev->config_id = conf->config_id;
416
417 if (!conf->data_size || (conf->data == NULL)) {
418 printk(KERN_INFO
419 "%s: firmware not found in configuration data!\n",
420 wandev->name);
421 return -EINVAL;
422 }
423
424 /* Check for resource conflicts and setup the
425 * card for piggibacking if necessary */
426 if(!conf->S514_CPU_no[0]) {
427 if ((err=check_s508_conflicts(card,conf,&irq)) != 0){
428 return err;
429 }
430 }else {
431 if ((err=check_s514_conflicts(card,conf,&irq)) != 0){
432 return err;
433 }
434 }
435
436 /* If the current card has already been configured
437 * or its a piggyback card, do not try to allocate
438 * resources.
439 */
440 if (!card->wandev.piggyback && !card->configured){
441
442 /* Configure hardware, load firmware, etc. */
443 memset(&card->hw, 0, sizeof(sdlahw_t));
444
445 /* for an S514 adapter, pass the CPU number and the slot number read */
446 /* from 'router.conf' to the 'sdla_setup()' function via the 'port' */
447 /* parameter */
448 if (conf->S514_CPU_no[0]){
449
450 card->hw.S514_cpu_no[0] = conf->S514_CPU_no[0];
451 card->hw.S514_slot_no = conf->PCI_slot_no;
452 card->hw.auto_pci_cfg = conf->auto_pci_cfg;
453
454 if (card->hw.auto_pci_cfg == WANOPT_YES){
455 printk(KERN_INFO "%s: Setting CPU to %c and Slot to Auto\n",
456 card->devname, card->hw.S514_cpu_no[0]);
457 }else{
458 printk(KERN_INFO "%s: Setting CPU to %c and Slot to %i\n",
459 card->devname, card->hw.S514_cpu_no[0], card->hw.S514_slot_no);
460 }
461
462 }else{
463 /* 508 Card io port and irq initialization */
464 card->hw.port = conf->ioport;
465 card->hw.irq = (conf->irq == 9) ? 2 : conf->irq;
466 }
467
468
469 /* Compute the virtual address of the card in kernel space */
470 if(conf->maddr){
471 card->hw.dpmbase = phys_to_virt(conf->maddr);
472 }else{
473 card->hw.dpmbase = (void *)conf->maddr;
474 }
475
476 card->hw.dpmsize = SDLA_WINDOWSIZE;
477
478 /* set the adapter type if using an S514 adapter */
479 card->hw.type = (conf->S514_CPU_no[0]) ? SDLA_S514 : conf->hw_opt[0];
480 card->hw.pclk = conf->hw_opt[1];
481
482 err = sdla_setup(&card->hw, conf->data, conf->data_size);
483 if (err){
484 printk(KERN_INFO "%s: Hardware setup Failed %i\n",
485 card->devname,err);
486 return err;
487 }
488
489 if(card->hw.type != SDLA_S514)
490 irq = (conf->irq == 2) ? 9 : conf->irq; /* IRQ2 -> IRQ9 */
491 else
492 irq = card->hw.irq;
493
494 /* request an interrupt vector - note that interrupts may be shared */
495 /* when using the S514 PCI adapter */
496
497 if(request_irq(irq, sdla_isr,
498 (card->hw.type == SDLA_S514) ? SA_SHIRQ : 0,
499 wandev->name, card)){
500
501 printk(KERN_INFO "%s: Can't reserve IRQ %d!\n", wandev->name, irq);
502 return -EINVAL;
503 }
504
505 }else{
506 printk(KERN_INFO "%s: Card Configured %i or Piggybacking %i!\n",
507 wandev->name,card->configured,card->wandev.piggyback);
508 }
509
510
511 if (!card->configured){
512
513 /* Initialize the Spin lock */
514 #if defined(__SMP__) || defined(LINUX_2_4)
515 printk(KERN_INFO "%s: Initializing for SMP\n",wandev->name);
516 #endif
517
518 /* Piggyback spin lock has already been initialized,
519 * in check_s514/s508_conflicts() */
520 if (!card->wandev.piggyback){
521 spin_lock_init(&card->wandev.lock);
522 }
523
524 /* Intialize WAN device data space */
525 wandev->irq = irq;
526 wandev->dma = 0;
527 if(card->hw.type != SDLA_S514){
528 wandev->ioport = card->hw.port;
529 }else{
530 wandev->S514_cpu_no[0] = card->hw.S514_cpu_no[0];
531 wandev->S514_slot_no = card->hw.S514_slot_no;
532 }
533 wandev->maddr = (unsigned long)card->hw.dpmbase;
534 wandev->msize = card->hw.dpmsize;
535 wandev->hw_opt[0] = card->hw.type;
536 wandev->hw_opt[1] = card->hw.pclk;
537 wandev->hw_opt[2] = card->hw.memory;
538 wandev->hw_opt[3] = card->hw.fwid;
539 }
540
541 /* Protocol-specific initialization */
542 switch (card->hw.fwid) {
543
544 case SFID_X25_502:
545 case SFID_X25_508:
546 printk(KERN_INFO "%s: Starting X.25 Protocol Init.\n",
547 card->devname);
548 err = wpx_init(card, conf);
549 break;
550 case SFID_FR502:
551 case SFID_FR508:
552 printk(KERN_INFO "%s: Starting Frame Relay Protocol Init.\n",
553 card->devname);
554 err = wpf_init(card, conf);
555 break;
556 case SFID_PPP502:
557 case SFID_PPP508:
558 printk(KERN_INFO "%s: Starting PPP Protocol Init.\n",
559 card->devname);
560 err = wpp_init(card, conf);
561 break;
562
563 case SFID_CHDLC508:
564 case SFID_CHDLC514:
565 if (conf->ft1){
566 printk(KERN_INFO "%s: Starting FT1 CSU/DSU Config Driver.\n",
567 card->devname);
568 err = wpft1_init(card, conf);
569 break;
570
571 }else if (conf->config_id == WANCONFIG_MPPP){
572 printk(KERN_INFO "%s: Starting Multi-Port PPP Protocol Init.\n",
573 card->devname);
574 err = wsppp_init(card,conf);
575 break;
576
577 }else{
578 printk(KERN_INFO "%s: Starting CHDLC Protocol Init.\n",
579 card->devname);
580 err = wpc_init(card, conf);
581 break;
582 }
583 default:
584 printk(KERN_INFO "%s: Error, Firmware is not supported %X %X!\n",
585 wandev->name,card->hw.fwid,SFID_CHDLC508);
586 err = -EPROTONOSUPPORT;
587 }
588
589 if (err != 0){
590 if (err == -EPROTONOSUPPORT){
591 printk(KERN_INFO
592 "%s: Error, Protocol selected has not been compiled!\n",
593 card->devname);
594 printk(KERN_INFO
595 "%s: Re-configure the kernel and re-build the modules!\n",
596 card->devname);
597 }
598
599 release_hw(card);
600 wandev->state = WAN_UNCONFIGURED;
601 return err;
602 }
603
604
605 /* Reserve I/O region and schedule background task */
606 if(card->hw.type != SDLA_S514 && !card->wandev.piggyback)
607 request_region(card->hw.port, card->hw.io_range, wandev->name);
608
609 /* Only use the polling routine for the X25 protocol */
610
611 card->wandev.critical=0;
612 return 0;
613 }
614
615 /*==================================================================
616 * configure_s508_card
617 *
618 * For a S508 adapter, check for a possible configuration error in that
619 * we are loading an adapter in the same IO port as a previously loaded S508
620 * card.
621 */
622
623 static int check_s508_conflicts (sdla_t* card,wandev_conf_t* conf, int *irq)
624 {
625 unsigned long smp_flags;
626 int i;
627
628 if (conf->ioport <= 0) {
629 printk(KERN_INFO
630 "%s: can't configure without I/O port address!\n",
631 card->wandev.name);
632 return -EINVAL;
633 }
634
635 if (conf->irq <= 0) {
636 printk(KERN_INFO "%s: can't configure without IRQ!\n",
637 card->wandev.name);
638 return -EINVAL;
639 }
640
641 if (test_bit(0,&card->configured))
642 return 0;
643
644
645 /* Check for already loaded card with the same IO port and IRQ
646 * If found, copy its hardware configuration and use its
647 * resources (i.e. piggybacking)
648 */
649
650 for (i = 0; i < ncards; i++) {
651 sdla_t *nxt_card = &card_array[i];
652
653 /* Skip the current card ptr */
654 if (nxt_card == card)
655 continue;
656
657
658 /* Find a card that is already configured with the
659 * same IO Port */
660 if ((nxt_card->hw.type == SDLA_S508) &&
661 (nxt_card->hw.port == conf->ioport) &&
662 (nxt_card->next == NULL)){
663
664 /* We found a card the card that has same configuration
665 * as us. This means, that we must setup this card in
666 * piggibacking mode. However, only CHDLC and MPPP protocol
667 * support this setup */
668
669 if ((conf->config_id == WANCONFIG_CHDLC ||
670 conf->config_id == WANCONFIG_MPPP) &&
671 (nxt_card->wandev.config_id == WANCONFIG_CHDLC ||
672 nxt_card->wandev.config_id == WANCONFIG_MPPP)){
673
674 *irq = nxt_card->hw.irq;
675 memcpy(&card->hw, &nxt_card->hw, sizeof(sdlahw_t));
676
677 /* The master could already be running, we must
678 * set this as a critical area */
679 lock_adapter_irq(&nxt_card->wandev.lock, &smp_flags);
680
681 nxt_card->next = card;
682 card->next = nxt_card;
683
684 card->wandev.piggyback = WANOPT_YES;
685
686 /* We must initialise the piggiback spin lock here
687 * since isr will try to lock card->next if it
688 * exists */
689 spin_lock_init(&card->wandev.lock);
690
691 unlock_adapter_irq(&nxt_card->wandev.lock, &smp_flags);
692 break;
693 }else{
694 /* Trying to run piggibacking with a wrong protocol */
695 printk(KERN_INFO "%s: ERROR: Resource busy, ioport: 0x%x\n"
696 "%s: This protocol doesn't support\n"
697 "%s: multi-port operation!\n",
698 card->devname,nxt_card->hw.port,
699 card->devname,card->devname);
700 return -EEXIST;
701 }
702 }
703 }
704
705
706 /* Make sure I/O port region is available only if we are the
707 * master device. If we are running in piggibacking mode,
708 * we will use the resources of the master card */
709 if (check_region(conf->ioport, SDLA_MAXIORANGE) &&
710 !card->wandev.piggyback) {
711 printk(KERN_INFO
712 "%s: I/O region 0x%X - 0x%X is in use!\n",
713 card->wandev.name, conf->ioport,
714 conf->ioport + SDLA_MAXIORANGE);
715 return -EINVAL;
716 }
717
718 return 0;
719 }
720
721 /*==================================================================
722 * configure_s514_card
723 *
724 * For a S514 adapter, check for a possible configuration error in that
725 * we are loading an adapter in the same slot as a previously loaded S514
726 * card.
727 */
728
729
730 static int check_s514_conflicts(sdla_t* card,wandev_conf_t* conf, int *irq)
731 {
732 unsigned long smp_flags;
733 int i;
734
735 if (test_bit(0,&card->configured))
736 return 0;
737
738
739 /* Check for already loaded card with the same IO port and IRQ
740 * If found, copy its hardware configuration and use its
741 * resources (i.e. piggybacking)
742 */
743
744 for (i = 0; i < ncards; i ++) {
745
746 sdla_t* nxt_card = &card_array[i];
747 if(nxt_card == card)
748 continue;
749
750 if((nxt_card->hw.type == SDLA_S514) &&
751 (nxt_card->hw.S514_slot_no == conf->PCI_slot_no) &&
752 (nxt_card->hw.S514_cpu_no[0] == conf->S514_CPU_no[0])&&
753 (nxt_card->next == NULL)){
754
755
756 if ((conf->config_id == WANCONFIG_CHDLC ||
757 conf->config_id == WANCONFIG_MPPP) &&
758 (nxt_card->wandev.config_id == WANCONFIG_CHDLC ||
759 nxt_card->wandev.config_id == WANCONFIG_MPPP)){
760
761 *irq = nxt_card->hw.irq;
762 memcpy(&card->hw, &nxt_card->hw, sizeof(sdlahw_t));
763
764 /* The master could already be running, we must
765 * set this as a critical area */
766 lock_adapter_irq(&nxt_card->wandev.lock,&smp_flags);
767 nxt_card->next = card;
768 card->next = nxt_card;
769
770 card->wandev.piggyback = WANOPT_YES;
771
772 /* We must initialise the piggiback spin lock here
773 * since isr will try to lock card->next if it
774 * exists */
775 spin_lock_init(&card->wandev.lock);
776
777 unlock_adapter_irq(&nxt_card->wandev.lock,&smp_flags);
778
779 }else{
780 /* Trying to run piggibacking with a wrong protocol */
781 printk(KERN_INFO "%s: ERROR: Resource busy: CPU %c PCISLOT %i\n"
782 "%s: This protocol doesn't support\n"
783 "%s: multi-port operation!\n",
784 card->devname,
785 conf->S514_CPU_no[0],conf->PCI_slot_no,
786 card->devname,card->devname);
787 return -EEXIST;
788 }
789 }
790 }
791
792 return 0;
793 }
794
795
796
797 /*============================================================================
798 * Shut down WAN link driver.
799 * o shut down adapter hardware
800 * o release system resources.
801 *
802 * This function is called by the router when device is being unregistered or
803 * when it handles ROUTER_DOWN IOCTL.
804 */
805 static int shutdown (wan_device_t* wandev)
806 {
807 sdla_t *card;
808 int err=0;
809
810 /* sanity checks */
811 if ((wandev == NULL) || (wandev->private == NULL)){
812 return -EFAULT;
813 }
814
815 if (wandev->state == WAN_UNCONFIGURED){
816 return 0;
817 }
818
819 card = wandev->private;
820
821 if (card->tty_opt){
822 if (card->tty_open){
823 printk(KERN_INFO
824 "%s: Shutdown Failed: TTY is still open\n",
825 card->devname);
826 return -EBUSY;
827 }
828 }
829
830 wandev->state = WAN_UNCONFIGURED;
831
832 set_bit(PERI_CRIT,(void*)&wandev->critical);
833
834 /* In case of piggibacking, make sure that
835 * we never try to shutdown both devices at the same
836 * time, because they depend on one another */
837
838 if (card->disable_comm){
839 card->disable_comm(card);
840 }
841
842 /* Release Resources */
843 release_hw(card);
844
845 /* only free the allocated I/O range if not an S514 adapter */
846 if (wandev->hw_opt[0] != SDLA_S514 && !card->configured){
847 release_region(card->hw.port, card->hw.io_range);
848 }
849
850 if (!card->configured){
851 memset(&card->hw, 0, sizeof(sdlahw_t));
852 if (card->next){
853 memset(&card->next->hw, 0, sizeof(sdlahw_t));
854 }
855 }
856
857
858 clear_bit(PERI_CRIT,(void*)&wandev->critical);
859 return err;
860 }
861
862 static void release_hw (sdla_t *card)
863 {
864 sdla_t *nxt_card;
865
866
867 /* Check if next device exists */
868 if (card->next){
869 nxt_card = card->next;
870 /* If next device is down then release resources */
871 if (nxt_card->wandev.state == WAN_UNCONFIGURED){
872 if (card->wandev.piggyback){
873 /* If this device is piggyback then use
874 * information of the master device
875 */
876 printk(KERN_INFO "%s: Piggyback shutting down\n",card->devname);
877 sdla_down(&card->next->hw);
878 free_irq(card->wandev.irq, card->next);
879 card->configured = 0;
880 card->next->configured = 0;
881 card->wandev.piggyback = 0;
882 }else{
883 /* Master device shutting down */
884 printk(KERN_INFO "%s: Master shutting down\n",card->devname);
885 sdla_down(&card->hw);
886 free_irq(card->wandev.irq, card);
887 card->configured = 0;
888 card->next->configured = 0;
889 }
890 }else{
891 printk(KERN_INFO "%s: Device still running %i\n",
892 nxt_card->devname,nxt_card->wandev.state);
893
894 card->configured = 1;
895 }
896 }else{
897 printk(KERN_INFO "%s: Master shutting down\n",card->devname);
898 sdla_down(&card->hw);
899 free_irq(card->wandev.irq, card);
900 card->configured = 0;
901 }
902 return;
903 }
904
905
906 /*============================================================================
907 * Driver I/O control.
908 * o verify arguments
909 * o perform requested action
910 *
911 * This function is called when router handles one of the reserved user
912 * IOCTLs. Note that 'arg' stil points to user address space.
913 */
914 static int ioctl (wan_device_t* wandev, unsigned cmd, unsigned long arg)
915 {
916 sdla_t* card;
917 int err;
918
919 /* sanity checks */
920 if ((wandev == NULL) || (wandev->private == NULL))
921 return -EFAULT;
922 if (wandev->state == WAN_UNCONFIGURED)
923 return -ENODEV;
924
925 card = wandev->private;
926
927 if(card->hw.type != SDLA_S514){
928 disable_irq(card->hw.irq);
929 }
930
931 if (test_bit(SEND_CRIT, (void*)&wandev->critical)) {
932 return -EAGAIN;
933 }
934
935 switch (cmd) {
936 case WANPIPE_DUMP:
937 err = ioctl_dump(wandev->private, (void*)arg);
938 break;
939
940 case WANPIPE_EXEC:
941 err = ioctl_exec(wandev->private, (void*)arg, cmd);
942 break;
943 default:
944 err = -EINVAL;
945 }
946
947 return err;
948 }
949
950 /****** Driver IOCTL Handlers ***********************************************/
951
952 /*============================================================================
953 * Dump adapter memory to user buffer.
954 * o verify request structure
955 * o copy request structure to kernel data space
956 * o verify length/offset
957 * o verify user buffer
958 * o copy adapter memory image to user buffer
959 *
960 * Note: when dumping memory, this routine switches curent dual-port memory
961 * vector, so care must be taken to avoid racing conditions.
962 */
963 static int ioctl_dump (sdla_t* card, sdla_dump_t* u_dump)
964 {
965 sdla_dump_t dump;
966 unsigned winsize;
967 unsigned long oldvec; /* DPM window vector */
968 unsigned long smp_flags;
969 int err = 0;
970
971 #if defined(LINUX_2_1) || defined(LINUX_2_4)
972 if(copy_from_user((void*)&dump, (void*)u_dump, sizeof(sdla_dump_t)))
973 return -EFAULT;
974 #else
975 if ((u_dump == NULL) ||
976 verify_area(VERIFY_READ, u_dump, sizeof(sdla_dump_t)))
977 return -EFAULT;
978 memcpy_fromfs((void*)&dump, (void*)u_dump, sizeof(sdla_dump_t));
979 #endif
980
981 if ((dump.magic != WANPIPE_MAGIC) ||
982 (dump.offset + dump.length > card->hw.memory))
983 return -EINVAL;
984
985 #ifdef LINUX_2_0
986 if ((dump.ptr == NULL) ||
987 verify_area(VERIFY_WRITE, dump.ptr, dump.length))
988 return -EFAULT;
989 #endif
990
991 winsize = card->hw.dpmsize;
992
993 if(card->hw.type != SDLA_S514) {
994
995 lock_adapter_irq(&card->wandev.lock, &smp_flags);
996
997 oldvec = card->hw.vector;
998 while (dump.length) {
999 /* current offset */
1000 unsigned pos = dump.offset % winsize;
1001 /* current vector */
1002 unsigned long vec = dump.offset - pos;
1003 unsigned len = (dump.length > (winsize - pos)) ?
1004 (winsize - pos) : dump.length;
1005 /* relocate window */
1006 if (sdla_mapmem(&card->hw, vec) != 0) {
1007 err = -EIO;
1008 break;
1009 }
1010
1011 #if defined(LINUX_2_1) || defined(LINUX_2_4)
1012 if(copy_to_user((void *)dump.ptr,
1013 (u8 *)card->hw.dpmbase + pos, len)){
1014
1015 unlock_adapter_irq(&card->wandev.lock, &smp_flags);
1016 return -EFAULT;
1017 }
1018 #else
1019 memcpy_tofs((void*)(dump.ptr),
1020 (void*)(card->hw.dpmbase + pos), len);
1021 #endif
1022 dump.length -= len;
1023 dump.offset += len;
1024 (char*)dump.ptr += len;
1025 }
1026
1027 sdla_mapmem(&card->hw, oldvec);/* restore DPM window position */
1028 unlock_adapter_irq(&card->wandev.lock, &smp_flags);
1029
1030 }else {
1031
1032 #if defined(LINUX_2_1) || defined(LINUX_2_4)
1033 if(copy_to_user((void *)dump.ptr,
1034 (u8 *)card->hw.dpmbase + dump.offset, dump.length)){
1035 return -EFAULT;
1036 }
1037 #else
1038 memcpy_tofs((void*)(dump.ptr),
1039 (void*)(card->hw.dpmbase + dump.offset), dump.length);
1040 #endif
1041 }
1042
1043 return err;
1044 }
1045
1046 /*============================================================================
1047 * Execute adapter firmware command.
1048 * o verify request structure
1049 * o copy request structure to kernel data space
1050 * o call protocol-specific 'exec' function
1051 */
1052 static int ioctl_exec (sdla_t* card, sdla_exec_t* u_exec, int cmd)
1053 {
1054 sdla_exec_t exec;
1055 int err=0;
1056
1057 if (card->exec == NULL && cmd == WANPIPE_EXEC){
1058 return -ENODEV;
1059 }
1060
1061 #if defined(LINUX_2_1) || defined(LINUX_2_4)
1062 if(copy_from_user((void*)&exec, (void*)u_exec, sizeof(sdla_exec_t)))
1063 return -EFAULT;
1064 #else
1065 if ((u_exec == NULL) ||
1066 verify_area(VERIFY_READ, u_exec, sizeof(sdla_exec_t)))
1067 return -EFAULT;
1068 memcpy_fromfs((void*)&exec, (void*)u_exec, sizeof(sdla_exec_t));
1069 #endif
1070
1071 if ((exec.magic != WANPIPE_MAGIC) || (exec.cmd == NULL))
1072 return -EINVAL;
1073
1074 switch (cmd) {
1075 case WANPIPE_EXEC:
1076 err = card->exec(card, exec.cmd, exec.data);
1077 break;
1078 }
1079 return err;
1080 }
1081
1082 /******* Miscellaneous ******************************************************/
1083
1084 /*============================================================================
1085 * SDLA Interrupt Service Routine.
1086 * o acknowledge SDLA hardware interrupt.
1087 * o call protocol-specific interrupt service routine, if any.
1088 */
1089 STATIC void sdla_isr (int irq, void* dev_id, struct pt_regs *regs)
1090 {
1091 #define card ((sdla_t*)dev_id)
1092
1093 if(card->hw.type == SDLA_S514) { /* handle interrrupt on S514 */
1094 u32 int_status;
1095 unsigned char CPU_no = card->hw.S514_cpu_no[0];
1096 unsigned char card_found_for_IRQ;
1097 u8 IRQ_count = 0;
1098
1099 for(;;) {
1100
1101 read_S514_int_stat(&card->hw, &int_status);
1102
1103 /* check if the interrupt is for this device */
1104 if(!((unsigned char)int_status &
1105 (IRQ_CPU_A | IRQ_CPU_B)))
1106 return;
1107
1108 /* if the IRQ is for both CPUs on the same adapter, */
1109 /* then alter the interrupt status so as to handle */
1110 /* one CPU at a time */
1111 if(((unsigned char)int_status & (IRQ_CPU_A | IRQ_CPU_B))
1112 == (IRQ_CPU_A | IRQ_CPU_B)) {
1113 int_status &= (CPU_no == S514_CPU_A) ?
1114 ~IRQ_CPU_B : ~IRQ_CPU_A;
1115 }
1116
1117 card_found_for_IRQ = 0;
1118
1119 /* check to see that the CPU number for this device */
1120 /* corresponds to the interrupt status read */
1121 switch (CPU_no) {
1122 case S514_CPU_A:
1123 if((unsigned char)int_status &
1124 IRQ_CPU_A)
1125 card_found_for_IRQ = 1;
1126 break;
1127
1128 case S514_CPU_B:
1129 if((unsigned char)int_status &
1130 IRQ_CPU_B)
1131 card_found_for_IRQ = 1;
1132 break;
1133 }
1134
1135 /* exit if the interrupt is for another CPU on the */
1136 /* same IRQ */
1137 if(!card_found_for_IRQ)
1138 return;
1139
1140 if (!card ||
1141 (card->wandev.state == WAN_UNCONFIGURED && !card->configured)){
1142 printk(KERN_INFO
1143 "Received IRQ %d for CPU #%c\n",
1144 irq, CPU_no);
1145 printk(KERN_INFO
1146 "IRQ for unconfigured adapter\n");
1147 S514_intack(&card->hw, int_status);
1148 return;
1149 }
1150
1151 if (card->in_isr) {
1152 printk(KERN_INFO
1153 "%s: interrupt re-entrancy on IRQ %d\n",
1154 card->devname, card->wandev.irq);
1155 S514_intack(&card->hw, int_status);
1156 return;
1157 }
1158
1159 spin_lock(&card->wandev.lock);
1160 if (card->next){
1161 spin_lock(&card->next->wandev.lock);
1162 }
1163
1164 S514_intack(&card->hw, int_status);
1165 if (card->isr)
1166 card->isr(card);
1167
1168 if (card->next){
1169 spin_unlock(&card->next->wandev.lock);
1170 }
1171 spin_unlock(&card->wandev.lock);
1172
1173 /* handle a maximum of two interrupts (one for each */
1174 /* CPU on the adapter) before returning */
1175 if((++ IRQ_count) == 2)
1176 return;
1177 }
1178 }
1179
1180 else { /* handle interrupt on S508 adapter */
1181
1182 if (!card || ((card->wandev.state == WAN_UNCONFIGURED) && !card->configured))
1183 return;
1184
1185 if (card->in_isr) {
1186 printk(KERN_INFO
1187 "%s: interrupt re-entrancy on IRQ %d!\n",
1188 card->devname, card->wandev.irq);
1189 return;
1190 }
1191
1192 spin_lock(&card->wandev.lock);
1193 if (card->next){
1194 spin_lock(&card->next->wandev.lock);
1195 }
1196
1197 sdla_intack(&card->hw);
1198 if (card->isr)
1199 card->isr(card);
1200
1201 if (card->next){
1202 spin_unlock(&card->next->wandev.lock);
1203 }
1204 spin_unlock(&card->wandev.lock);
1205
1206 }
1207
1208 #undef card
1209 }
1210
1211 /*============================================================================
1212 * This routine is called by the protocol-specific modules when network
1213 * interface is being open. The only reason we need this, is because we
1214 * have to call MOD_INC_USE_COUNT, but cannot include 'module.h' where it's
1215 * defined more than once into the same kernel module.
1216 */
1217 void wanpipe_open (sdla_t* card)
1218 {
1219 ++card->open_cnt;
1220 MOD_INC_USE_COUNT;
1221 }
1222
1223 /*============================================================================
1224 * This routine is called by the protocol-specific modules when network
1225 * interface is being closed. The only reason we need this, is because we
1226 * have to call MOD_DEC_USE_COUNT, but cannot include 'module.h' where it's
1227 * defined more than once into the same kernel module.
1228 */
1229 void wanpipe_close (sdla_t* card)
1230 {
1231 --card->open_cnt;
1232 MOD_DEC_USE_COUNT;
1233 }
1234
1235 /*============================================================================
1236 * Set WAN device state.
1237 */
1238 void wanpipe_set_state (sdla_t* card, int state)
1239 {
1240 if (card->wandev.state != state) {
1241 switch (state) {
1242 case WAN_CONNECTED:
1243 printk (KERN_INFO "%s: link connected!\n",
1244 card->devname);
1245 break;
1246
1247 case WAN_CONNECTING:
1248 printk (KERN_INFO "%s: link connecting...\n",
1249 card->devname);
1250 break;
1251
1252 case WAN_DISCONNECTED:
1253 printk (KERN_INFO "%s: link disconnected!\n",
1254 card->devname);
1255 break;
1256 }
1257 card->wandev.state = state;
1258 }
1259 card->state_tick = jiffies;
1260 }
1261
1262 sdla_t * wanpipe_find_card (char *name)
1263 {
1264 int cnt;
1265 for (cnt = 0; cnt < ncards; ++ cnt) {
1266 sdla_t* card = &card_array[cnt];
1267 if (!strcmp(card->devname,name))
1268 return card;
1269 }
1270 return NULL;
1271 }
1272 sdla_t * wanpipe_find_card_num (int num)
1273 {
1274 if (num < 1 || num > ncards)
1275 return NULL;
1276 num--;
1277 return &card_array[num];
1278 }
1279
1280
1281 static void run_wanpipe_tq (unsigned long data)
1282 {
1283 task_queue *tq_queue = (task_queue *)data;
1284 if (test_and_set_bit(2,(void*)&wanpipe_bh_critical))
1285 printk(KERN_INFO "CRITICAL IN RUNNING TASK QUEUE\n");
1286 run_task_queue (tq_queue);
1287 clear_bit(2,(void*)&wanpipe_bh_critical);
1288
1289 }
1290
1291 void wanpipe_queue_tq (struct tq_struct *bh_pointer)
1292 {
1293 if (test_and_set_bit(1,(void*)&wanpipe_bh_critical))
1294 printk(KERN_INFO "CRITICAL IN QUEUING TASK\n");
1295
1296 queue_task(bh_pointer,&wanpipe_tq_custom);
1297 clear_bit(1,(void*)&wanpipe_bh_critical);
1298 }
1299
1300 void wanpipe_mark_bh (void)
1301 {
1302 if (!test_and_set_bit(0,(void*)&wanpipe_bh_critical)){
1303 queue_task(&wanpipe_tq_task,&tq_immediate);
1304 mark_bh(IMMEDIATE_BH);
1305 clear_bit(0,(void*)&wanpipe_bh_critical);
1306 }
1307 }
1308
1309 void wakeup_sk_bh (netdevice_t *dev)
1310 {
1311 wanpipe_common_t *chan = dev->priv;
1312
1313 if (test_bit(0,&chan->common_critical))
1314 return;
1315
1316 if (chan->sk && chan->tx_timer){
1317 chan->tx_timer->expires=jiffies+1;
1318 add_timer(chan->tx_timer);
1319 }
1320 }
1321
1322 int change_dev_flags (netdevice_t *dev, unsigned flags)
1323 {
1324 struct ifreq if_info;
1325 mm_segment_t fs = get_fs();
1326 int err;
1327
1328 memset(&if_info, 0, sizeof(if_info));
1329 strcpy(if_info.ifr_name, dev->name);
1330 if_info.ifr_flags = flags;
1331
1332 set_fs(get_ds()); /* get user space block */
1333 err = devinet_ioctl(SIOCSIFFLAGS, &if_info);
1334 set_fs(fs);
1335
1336 return err;
1337 }
1338
1339 unsigned long get_ip_address (netdevice_t *dev, int option)
1340 {
1341
1342 #ifdef LINUX_2_4
1343 struct in_ifaddr *ifaddr;
1344 struct in_device *in_dev;
1345
1346 if ((in_dev = __in_dev_get(dev)) == NULL){
1347 return 0;
1348 }
1349 #elif defined(LINUX_2_1)
1350 struct in_ifaddr *ifaddr;
1351 struct in_device *in_dev;
1352
1353 if ((in_dev = dev->ip_ptr) == NULL){
1354 return 0;
1355 }
1356 #endif
1357
1358 #if defined(LINUX_2_1) || defined(LINUX_2_4)
1359 if ((ifaddr = in_dev->ifa_list)== NULL ){
1360 return 0;
1361 }
1362 #endif
1363
1364 switch (option){
1365
1366 case WAN_LOCAL_IP:
1367 #ifdef LINUX_2_0
1368 return dev->pa_addr;
1369 #else
1370 return ifaddr->ifa_local;
1371 #endif
1372 break;
1373
1374 case WAN_POINTOPOINT_IP:
1375 #ifdef LINUX_2_0
1376 return dev->pa_dstaddr;
1377 #else
1378 return ifaddr->ifa_address;
1379 #endif
1380 break;
1381
1382 case WAN_NETMASK_IP:
1383 #ifdef LINUX_2_0
1384 return dev->pa_mask;
1385 #else
1386 return ifaddr->ifa_mask;
1387 #endif
1388 break;
1389
1390 case WAN_BROADCAST_IP:
1391 #ifdef LINUX_2_0
1392 return dev->pa_brdaddr;
1393 #else
1394 return ifaddr->ifa_broadcast;
1395 #endif
1396 break;
1397 default:
1398 return 0;
1399 }
1400
1401 return 0;
1402 }
1403
1404 void add_gateway(sdla_t *card, netdevice_t *dev)
1405 {
1406 mm_segment_t oldfs;
1407 struct rtentry route;
1408 int res;
1409
1410 memset((char*)&route,0,sizeof(struct rtentry));
1411
1412 ((struct sockaddr_in *)
1413 &(route.rt_dst))->sin_addr.s_addr = 0;
1414 ((struct sockaddr_in *)
1415 &(route.rt_dst))->sin_family = AF_INET;
1416
1417 ((struct sockaddr_in *)
1418 &(route.rt_genmask))->sin_addr.s_addr = 0;
1419 ((struct sockaddr_in *)
1420 &(route.rt_genmask)) ->sin_family = AF_INET;
1421
1422
1423 route.rt_flags = 0;
1424 route.rt_dev = dev->name;
1425
1426 oldfs = get_fs();
1427 set_fs(get_ds());
1428 #if defined(LINUX_2_1) || defined(LINUX_2_4)
1429 res = ip_rt_ioctl(SIOCADDRT,&route);
1430 #else
1431 res = ip_rt_new(&route);
1432 #endif
1433 set_fs(oldfs);
1434
1435 if (res == 0){
1436 printk(KERN_INFO "%s: Gateway added for %s\n",
1437 card->devname,dev->name);
1438 }
1439
1440 return;
1441 }
1442
1443 MODULE_LICENSE("GPL");
1444
1445 /****** End *********************************************************/
1446