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1/*
2 * drivers/s390/net/qeth_l3_sys.c
3 *
4 * Copyright IBM Corp. 2007
5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
6 * Frank Pavlic <fpavlic@de.ibm.com>,
7 * Thomas Spatzier <tspat@de.ibm.com>,
8 * Frank Blaschka <frank.blaschka@de.ibm.com>
9 */
10
11#include <linux/slab.h>
12
13#include "qeth_l3.h"
14
15#define QETH_DEVICE_ATTR(_id, _name, _mode, _show, _store) \
16struct device_attribute dev_attr_##_id = __ATTR(_name, _mode, _show, _store)
17
18static ssize_t qeth_l3_dev_route_show(struct qeth_card *card,
19 struct qeth_routing_info *route, char *buf)
20{
21 switch (route->type) {
22 case PRIMARY_ROUTER:
23 return sprintf(buf, "%s\n", "primary router");
24 case SECONDARY_ROUTER:
25 return sprintf(buf, "%s\n", "secondary router");
26 case MULTICAST_ROUTER:
27 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
28 return sprintf(buf, "%s\n", "multicast router+");
29 else
30 return sprintf(buf, "%s\n", "multicast router");
31 case PRIMARY_CONNECTOR:
32 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
33 return sprintf(buf, "%s\n", "primary connector+");
34 else
35 return sprintf(buf, "%s\n", "primary connector");
36 case SECONDARY_CONNECTOR:
37 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
38 return sprintf(buf, "%s\n", "secondary connector+");
39 else
40 return sprintf(buf, "%s\n", "secondary connector");
41 default:
42 return sprintf(buf, "%s\n", "no");
43 }
44}
45
46static ssize_t qeth_l3_dev_route4_show(struct device *dev,
47 struct device_attribute *attr, char *buf)
48{
49 struct qeth_card *card = dev_get_drvdata(dev);
50
51 if (!card)
52 return -EINVAL;
53
54 return qeth_l3_dev_route_show(card, &card->options.route4, buf);
55}
56
57static ssize_t qeth_l3_dev_route_store(struct qeth_card *card,
58 struct qeth_routing_info *route, enum qeth_prot_versions prot,
59 const char *buf, size_t count)
60{
61 enum qeth_routing_types old_route_type = route->type;
62 char *tmp;
63 int rc = 0;
64
65 tmp = strsep((char **) &buf, "\n");
66 mutex_lock(&card->conf_mutex);
67 if (!strcmp(tmp, "no_router")) {
68 route->type = NO_ROUTER;
69 } else if (!strcmp(tmp, "primary_connector")) {
70 route->type = PRIMARY_CONNECTOR;
71 } else if (!strcmp(tmp, "secondary_connector")) {
72 route->type = SECONDARY_CONNECTOR;
73 } else if (!strcmp(tmp, "primary_router")) {
74 route->type = PRIMARY_ROUTER;
75 } else if (!strcmp(tmp, "secondary_router")) {
76 route->type = SECONDARY_ROUTER;
77 } else if (!strcmp(tmp, "multicast_router")) {
78 route->type = MULTICAST_ROUTER;
79 } else {
80 rc = -EINVAL;
81 goto out;
82 }
83 if (((card->state == CARD_STATE_SOFTSETUP) ||
84 (card->state == CARD_STATE_UP)) &&
85 (old_route_type != route->type)) {
86 if (prot == QETH_PROT_IPV4)
87 rc = qeth_l3_setrouting_v4(card);
88 else if (prot == QETH_PROT_IPV6)
89 rc = qeth_l3_setrouting_v6(card);
90 }
91out:
92 mutex_unlock(&card->conf_mutex);
93 return rc ? rc : count;
94}
95
96static ssize_t qeth_l3_dev_route4_store(struct device *dev,
97 struct device_attribute *attr, const char *buf, size_t count)
98{
99 struct qeth_card *card = dev_get_drvdata(dev);
100
101 if (!card)
102 return -EINVAL;
103
104 return qeth_l3_dev_route_store(card, &card->options.route4,
105 QETH_PROT_IPV4, buf, count);
106}
107
108static DEVICE_ATTR(route4, 0644, qeth_l3_dev_route4_show,
109 qeth_l3_dev_route4_store);
110
111static ssize_t qeth_l3_dev_route6_show(struct device *dev,
112 struct device_attribute *attr, char *buf)
113{
114 struct qeth_card *card = dev_get_drvdata(dev);
115
116 if (!card)
117 return -EINVAL;
118
119 return qeth_l3_dev_route_show(card, &card->options.route6, buf);
120}
121
122static ssize_t qeth_l3_dev_route6_store(struct device *dev,
123 struct device_attribute *attr, const char *buf, size_t count)
124{
125 struct qeth_card *card = dev_get_drvdata(dev);
126
127 if (!card)
128 return -EINVAL;
129
130 return qeth_l3_dev_route_store(card, &card->options.route6,
131 QETH_PROT_IPV6, buf, count);
132}
133
134static DEVICE_ATTR(route6, 0644, qeth_l3_dev_route6_show,
135 qeth_l3_dev_route6_store);
136
137static ssize_t qeth_l3_dev_fake_broadcast_show(struct device *dev,
138 struct device_attribute *attr, char *buf)
139{
140 struct qeth_card *card = dev_get_drvdata(dev);
141
142 if (!card)
143 return -EINVAL;
144
145 return sprintf(buf, "%i\n", card->options.fake_broadcast? 1:0);
146}
147
148static ssize_t qeth_l3_dev_fake_broadcast_store(struct device *dev,
149 struct device_attribute *attr, const char *buf, size_t count)
150{
151 struct qeth_card *card = dev_get_drvdata(dev);
152 char *tmp;
153 int i, rc = 0;
154
155 if (!card)
156 return -EINVAL;
157
158 mutex_lock(&card->conf_mutex);
159 if ((card->state != CARD_STATE_DOWN) &&
160 (card->state != CARD_STATE_RECOVER)) {
161 rc = -EPERM;
162 goto out;
163 }
164
165 i = simple_strtoul(buf, &tmp, 16);
166 if ((i == 0) || (i == 1))
167 card->options.fake_broadcast = i;
168 else
169 rc = -EINVAL;
170out:
171 mutex_unlock(&card->conf_mutex);
172 return rc ? rc : count;
173}
174
175static DEVICE_ATTR(fake_broadcast, 0644, qeth_l3_dev_fake_broadcast_show,
176 qeth_l3_dev_fake_broadcast_store);
177
178static ssize_t qeth_l3_dev_broadcast_mode_show(struct device *dev,
179 struct device_attribute *attr, char *buf)
180{
181 struct qeth_card *card = dev_get_drvdata(dev);
182
183 if (!card)
184 return -EINVAL;
185
186 if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
187 (card->info.link_type == QETH_LINK_TYPE_LANE_TR)))
188 return sprintf(buf, "n/a\n");
189
190 return sprintf(buf, "%s\n", (card->options.broadcast_mode ==
191 QETH_TR_BROADCAST_ALLRINGS)?
192 "all rings":"local");
193}
194
195static ssize_t qeth_l3_dev_broadcast_mode_store(struct device *dev,
196 struct device_attribute *attr, const char *buf, size_t count)
197{
198 struct qeth_card *card = dev_get_drvdata(dev);
199 char *tmp;
200 int rc = 0;
201
202 if (!card)
203 return -EINVAL;
204
205 mutex_lock(&card->conf_mutex);
206 if ((card->state != CARD_STATE_DOWN) &&
207 (card->state != CARD_STATE_RECOVER)) {
208 rc = -EPERM;
209 goto out;
210 }
211
212 if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
213 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))) {
214 rc = -EINVAL;
215 goto out;
216 }
217
218 tmp = strsep((char **) &buf, "\n");
219
220 if (!strcmp(tmp, "local"))
221 card->options.broadcast_mode = QETH_TR_BROADCAST_LOCAL;
222 else if (!strcmp(tmp, "all_rings"))
223 card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
224 else
225 rc = -EINVAL;
226out:
227 mutex_unlock(&card->conf_mutex);
228 return rc ? rc : count;
229}
230
231static DEVICE_ATTR(broadcast_mode, 0644, qeth_l3_dev_broadcast_mode_show,
232 qeth_l3_dev_broadcast_mode_store);
233
234static ssize_t qeth_l3_dev_canonical_macaddr_show(struct device *dev,
235 struct device_attribute *attr, char *buf)
236{
237 struct qeth_card *card = dev_get_drvdata(dev);
238
239 if (!card)
240 return -EINVAL;
241
242 if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
243 (card->info.link_type == QETH_LINK_TYPE_LANE_TR)))
244 return sprintf(buf, "n/a\n");
245
246 return sprintf(buf, "%i\n", (card->options.macaddr_mode ==
247 QETH_TR_MACADDR_CANONICAL)? 1:0);
248}
249
250static ssize_t qeth_l3_dev_canonical_macaddr_store(struct device *dev,
251 struct device_attribute *attr, const char *buf, size_t count)
252{
253 struct qeth_card *card = dev_get_drvdata(dev);
254 char *tmp;
255 int i, rc = 0;
256
257 if (!card)
258 return -EINVAL;
259
260 mutex_lock(&card->conf_mutex);
261 if ((card->state != CARD_STATE_DOWN) &&
262 (card->state != CARD_STATE_RECOVER)) {
263 rc = -EPERM;
264 goto out;
265 }
266
267 if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
268 (card->info.link_type == QETH_LINK_TYPE_LANE_TR))) {
269 rc = -EINVAL;
270 goto out;
271 }
272
273 i = simple_strtoul(buf, &tmp, 16);
274 if ((i == 0) || (i == 1))
275 card->options.macaddr_mode = i?
276 QETH_TR_MACADDR_CANONICAL :
277 QETH_TR_MACADDR_NONCANONICAL;
278 else
279 rc = -EINVAL;
280out:
281 mutex_unlock(&card->conf_mutex);
282 return rc ? rc : count;
283}
284
285static DEVICE_ATTR(canonical_macaddr, 0644, qeth_l3_dev_canonical_macaddr_show,
286 qeth_l3_dev_canonical_macaddr_store);
287
288static ssize_t qeth_l3_dev_sniffer_show(struct device *dev,
289 struct device_attribute *attr, char *buf)
290{
291 struct qeth_card *card = dev_get_drvdata(dev);
292
293 if (!card)
294 return -EINVAL;
295
296 return sprintf(buf, "%i\n", card->options.sniffer ? 1 : 0);
297}
298
299static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
300 struct device_attribute *attr, const char *buf, size_t count)
301{
302 struct qeth_card *card = dev_get_drvdata(dev);
303 int rc = 0;
304 unsigned long i;
305
306 if (!card)
307 return -EINVAL;
308
309 if (card->info.type != QETH_CARD_TYPE_IQD)
310 return -EPERM;
311
312 mutex_lock(&card->conf_mutex);
313 if ((card->state != CARD_STATE_DOWN) &&
314 (card->state != CARD_STATE_RECOVER)) {
315 rc = -EPERM;
316 goto out;
317 }
318
319 rc = strict_strtoul(buf, 16, &i);
320 if (rc) {
321 rc = -EINVAL;
322 goto out;
323 }
324 switch (i) {
325 case 0:
326 card->options.sniffer = i;
327 break;
328 case 1:
329 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
330 if (card->ssqd.qdioac2 & QETH_SNIFF_AVAIL) {
331 card->options.sniffer = i;
332 if (card->qdio.init_pool.buf_count !=
333 QETH_IN_BUF_COUNT_MAX)
334 qeth_realloc_buffer_pool(card,
335 QETH_IN_BUF_COUNT_MAX);
336 break;
337 } else
338 rc = -EPERM;
339 default: /* fall through */
340 rc = -EINVAL;
341 }
342out:
343 mutex_unlock(&card->conf_mutex);
344 return rc ? rc : count;
345}
346
347static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
348 qeth_l3_dev_sniffer_store);
349
350static struct attribute *qeth_l3_device_attrs[] = {
351 &dev_attr_route4.attr,
352 &dev_attr_route6.attr,
353 &dev_attr_fake_broadcast.attr,
354 &dev_attr_broadcast_mode.attr,
355 &dev_attr_canonical_macaddr.attr,
356 &dev_attr_sniffer.attr,
357 NULL,
358};
359
360static struct attribute_group qeth_l3_device_attr_group = {
361 .attrs = qeth_l3_device_attrs,
362};
363
364static ssize_t qeth_l3_dev_ipato_enable_show(struct device *dev,
365 struct device_attribute *attr, char *buf)
366{
367 struct qeth_card *card = dev_get_drvdata(dev);
368
369 if (!card)
370 return -EINVAL;
371
372 return sprintf(buf, "%i\n", card->ipato.enabled? 1:0);
373}
374
375static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev,
376 struct device_attribute *attr, const char *buf, size_t count)
377{
378 struct qeth_card *card = dev_get_drvdata(dev);
379 struct qeth_ipaddr *tmpipa, *t;
380 char *tmp;
381 int rc = 0;
382
383 if (!card)
384 return -EINVAL;
385
386 mutex_lock(&card->conf_mutex);
387 if ((card->state != CARD_STATE_DOWN) &&
388 (card->state != CARD_STATE_RECOVER)) {
389 rc = -EPERM;
390 goto out;
391 }
392
393 tmp = strsep((char **) &buf, "\n");
394 if (!strcmp(tmp, "toggle")) {
395 card->ipato.enabled = (card->ipato.enabled)? 0 : 1;
396 } else if (!strcmp(tmp, "1")) {
397 card->ipato.enabled = 1;
398 list_for_each_entry_safe(tmpipa, t, card->ip_tbd_list, entry) {
399 if ((tmpipa->type == QETH_IP_TYPE_NORMAL) &&
400 qeth_l3_is_addr_covered_by_ipato(card, tmpipa))
401 tmpipa->set_flags |=
402 QETH_IPA_SETIP_TAKEOVER_FLAG;
403 }
404
405 } else if (!strcmp(tmp, "0")) {
406 card->ipato.enabled = 0;
407 list_for_each_entry_safe(tmpipa, t, card->ip_tbd_list, entry) {
408 if (tmpipa->set_flags &
409 QETH_IPA_SETIP_TAKEOVER_FLAG)
410 tmpipa->set_flags &=
411 ~QETH_IPA_SETIP_TAKEOVER_FLAG;
412 }
413 } else
414 rc = -EINVAL;
415out:
416 mutex_unlock(&card->conf_mutex);
417 return rc ? rc : count;
418}
419
420static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
421 qeth_l3_dev_ipato_enable_show,
422 qeth_l3_dev_ipato_enable_store);
423
424static ssize_t qeth_l3_dev_ipato_invert4_show(struct device *dev,
425 struct device_attribute *attr, char *buf)
426{
427 struct qeth_card *card = dev_get_drvdata(dev);
428
429 if (!card)
430 return -EINVAL;
431
432 return sprintf(buf, "%i\n", card->ipato.invert4? 1:0);
433}
434
435static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev,
436 struct device_attribute *attr,
437 const char *buf, size_t count)
438{
439 struct qeth_card *card = dev_get_drvdata(dev);
440 char *tmp;
441 int rc = 0;
442
443 if (!card)
444 return -EINVAL;
445
446 mutex_lock(&card->conf_mutex);
447 tmp = strsep((char **) &buf, "\n");
448 if (!strcmp(tmp, "toggle")) {
449 card->ipato.invert4 = (card->ipato.invert4)? 0 : 1;
450 } else if (!strcmp(tmp, "1")) {
451 card->ipato.invert4 = 1;
452 } else if (!strcmp(tmp, "0")) {
453 card->ipato.invert4 = 0;
454 } else
455 rc = -EINVAL;
456 mutex_unlock(&card->conf_mutex);
457 return rc ? rc : count;
458}
459
460static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
461 qeth_l3_dev_ipato_invert4_show,
462 qeth_l3_dev_ipato_invert4_store);
463
464static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
465 enum qeth_prot_versions proto)
466{
467 struct qeth_ipato_entry *ipatoe;
468 unsigned long flags;
469 char addr_str[40];
470 int entry_len; /* length of 1 entry string, differs between v4 and v6 */
471 int i = 0;
472
473 entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
474 /* add strlen for "/<mask>\n" */
475 entry_len += (proto == QETH_PROT_IPV4)? 5 : 6;
476 spin_lock_irqsave(&card->ip_lock, flags);
477 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
478 if (ipatoe->proto != proto)
479 continue;
480 /* String must not be longer than PAGE_SIZE. So we check if
481 * string length gets near PAGE_SIZE. Then we can savely display
482 * the next IPv6 address (worst case, compared to IPv4) */
483 if ((PAGE_SIZE - i) <= entry_len)
484 break;
485 qeth_l3_ipaddr_to_string(proto, ipatoe->addr, addr_str);
486 i += snprintf(buf + i, PAGE_SIZE - i,
487 "%s/%i\n", addr_str, ipatoe->mask_bits);
488 }
489 spin_unlock_irqrestore(&card->ip_lock, flags);
490 i += snprintf(buf + i, PAGE_SIZE - i, "\n");
491
492 return i;
493}
494
495static ssize_t qeth_l3_dev_ipato_add4_show(struct device *dev,
496 struct device_attribute *attr, char *buf)
497{
498 struct qeth_card *card = dev_get_drvdata(dev);
499
500 if (!card)
501 return -EINVAL;
502
503 return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV4);
504}
505
506static int qeth_l3_parse_ipatoe(const char *buf, enum qeth_prot_versions proto,
507 u8 *addr, int *mask_bits)
508{
509 const char *start, *end;
510 char *tmp;
511 char buffer[40] = {0, };
512
513 start = buf;
514 /* get address string */
515 end = strchr(start, '/');
516 if (!end || (end - start >= 40)) {
517 return -EINVAL;
518 }
519 strncpy(buffer, start, end - start);
520 if (qeth_l3_string_to_ipaddr(buffer, proto, addr)) {
521 return -EINVAL;
522 }
523 start = end + 1;
524 *mask_bits = simple_strtoul(start, &tmp, 10);
525 if (!strlen(start) ||
526 (tmp == start) ||
527 (*mask_bits > ((proto == QETH_PROT_IPV4) ? 32 : 128))) {
528 return -EINVAL;
529 }
530 return 0;
531}
532
533static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
534 struct qeth_card *card, enum qeth_prot_versions proto)
535{
536 struct qeth_ipato_entry *ipatoe;
537 u8 addr[16];
538 int mask_bits;
539 int rc = 0;
540
541 mutex_lock(&card->conf_mutex);
542 rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
543 if (rc)
544 goto out;
545
546 ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
547 if (!ipatoe) {
548 rc = -ENOMEM;
549 goto out;
550 }
551 ipatoe->proto = proto;
552 memcpy(ipatoe->addr, addr, (proto == QETH_PROT_IPV4)? 4:16);
553 ipatoe->mask_bits = mask_bits;
554
555 rc = qeth_l3_add_ipato_entry(card, ipatoe);
556 if (rc)
557 kfree(ipatoe);
558out:
559 mutex_unlock(&card->conf_mutex);
560 return rc ? rc : count;
561}
562
563static ssize_t qeth_l3_dev_ipato_add4_store(struct device *dev,
564 struct device_attribute *attr, const char *buf, size_t count)
565{
566 struct qeth_card *card = dev_get_drvdata(dev);
567
568 if (!card)
569 return -EINVAL;
570
571 return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV4);
572}
573
574static QETH_DEVICE_ATTR(ipato_add4, add4, 0644,
575 qeth_l3_dev_ipato_add4_show,
576 qeth_l3_dev_ipato_add4_store);
577
578static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
579 struct qeth_card *card, enum qeth_prot_versions proto)
580{
581 u8 addr[16];
582 int mask_bits;
583 int rc = 0;
584
585 mutex_lock(&card->conf_mutex);
586 rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
587 if (!rc)
588 qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
589 mutex_unlock(&card->conf_mutex);
590 return rc ? rc : count;
591}
592
593static ssize_t qeth_l3_dev_ipato_del4_store(struct device *dev,
594 struct device_attribute *attr, const char *buf, size_t count)
595{
596 struct qeth_card *card = dev_get_drvdata(dev);
597
598 if (!card)
599 return -EINVAL;
600
601 return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV4);
602}
603
604static QETH_DEVICE_ATTR(ipato_del4, del4, 0200, NULL,
605 qeth_l3_dev_ipato_del4_store);
606
607static ssize_t qeth_l3_dev_ipato_invert6_show(struct device *dev,
608 struct device_attribute *attr, char *buf)
609{
610 struct qeth_card *card = dev_get_drvdata(dev);
611
612 if (!card)
613 return -EINVAL;
614
615 return sprintf(buf, "%i\n", card->ipato.invert6? 1:0);
616}
617
618static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev,
619 struct device_attribute *attr, const char *buf, size_t count)
620{
621 struct qeth_card *card = dev_get_drvdata(dev);
622 char *tmp;
623 int rc = 0;
624
625 if (!card)
626 return -EINVAL;
627
628 mutex_lock(&card->conf_mutex);
629 tmp = strsep((char **) &buf, "\n");
630 if (!strcmp(tmp, "toggle")) {
631 card->ipato.invert6 = (card->ipato.invert6)? 0 : 1;
632 } else if (!strcmp(tmp, "1")) {
633 card->ipato.invert6 = 1;
634 } else if (!strcmp(tmp, "0")) {
635 card->ipato.invert6 = 0;
636 } else
637 rc = -EINVAL;
638 mutex_unlock(&card->conf_mutex);
639 return rc ? rc : count;
640}
641
642static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
643 qeth_l3_dev_ipato_invert6_show,
644 qeth_l3_dev_ipato_invert6_store);
645
646
647static ssize_t qeth_l3_dev_ipato_add6_show(struct device *dev,
648 struct device_attribute *attr, char *buf)
649{
650 struct qeth_card *card = dev_get_drvdata(dev);
651
652 if (!card)
653 return -EINVAL;
654
655 return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV6);
656}
657
658static ssize_t qeth_l3_dev_ipato_add6_store(struct device *dev,
659 struct device_attribute *attr, const char *buf, size_t count)
660{
661 struct qeth_card *card = dev_get_drvdata(dev);
662
663 if (!card)
664 return -EINVAL;
665
666 return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV6);
667}
668
669static QETH_DEVICE_ATTR(ipato_add6, add6, 0644,
670 qeth_l3_dev_ipato_add6_show,
671 qeth_l3_dev_ipato_add6_store);
672
673static ssize_t qeth_l3_dev_ipato_del6_store(struct device *dev,
674 struct device_attribute *attr, const char *buf, size_t count)
675{
676 struct qeth_card *card = dev_get_drvdata(dev);
677
678 if (!card)
679 return -EINVAL;
680
681 return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV6);
682}
683
684static QETH_DEVICE_ATTR(ipato_del6, del6, 0200, NULL,
685 qeth_l3_dev_ipato_del6_store);
686
687static struct attribute *qeth_ipato_device_attrs[] = {
688 &dev_attr_ipato_enable.attr,
689 &dev_attr_ipato_invert4.attr,
690 &dev_attr_ipato_add4.attr,
691 &dev_attr_ipato_del4.attr,
692 &dev_attr_ipato_invert6.attr,
693 &dev_attr_ipato_add6.attr,
694 &dev_attr_ipato_del6.attr,
695 NULL,
696};
697
698static struct attribute_group qeth_device_ipato_group = {
699 .name = "ipa_takeover",
700 .attrs = qeth_ipato_device_attrs,
701};
702
703static ssize_t qeth_l3_dev_vipa_add_show(char *buf, struct qeth_card *card,
704 enum qeth_prot_versions proto)
705{
706 struct qeth_ipaddr *ipaddr;
707 char addr_str[40];
708 int entry_len; /* length of 1 entry string, differs between v4 and v6 */
709 unsigned long flags;
710 int i = 0;
711
712 entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
713 entry_len += 2; /* \n + terminator */
714 spin_lock_irqsave(&card->ip_lock, flags);
715 list_for_each_entry(ipaddr, &card->ip_list, entry) {
716 if (ipaddr->proto != proto)
717 continue;
718 if (ipaddr->type != QETH_IP_TYPE_VIPA)
719 continue;
720 /* String must not be longer than PAGE_SIZE. So we check if
721 * string length gets near PAGE_SIZE. Then we can savely display
722 * the next IPv6 address (worst case, compared to IPv4) */
723 if ((PAGE_SIZE - i) <= entry_len)
724 break;
725 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
726 addr_str);
727 i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
728 }
729 spin_unlock_irqrestore(&card->ip_lock, flags);
730 i += snprintf(buf + i, PAGE_SIZE - i, "\n");
731
732 return i;
733}
734
735static ssize_t qeth_l3_dev_vipa_add4_show(struct device *dev,
736 struct device_attribute *attr, char *buf)
737{
738 struct qeth_card *card = dev_get_drvdata(dev);
739
740 if (!card)
741 return -EINVAL;
742
743 return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV4);
744}
745
746static int qeth_l3_parse_vipae(const char *buf, enum qeth_prot_versions proto,
747 u8 *addr)
748{
749 if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
750 return -EINVAL;
751 }
752 return 0;
753}
754
755static ssize_t qeth_l3_dev_vipa_add_store(const char *buf, size_t count,
756 struct qeth_card *card, enum qeth_prot_versions proto)
757{
758 u8 addr[16] = {0, };
759 int rc;
760
761 mutex_lock(&card->conf_mutex);
762 rc = qeth_l3_parse_vipae(buf, proto, addr);
763 if (!rc)
764 rc = qeth_l3_add_vipa(card, proto, addr);
765 mutex_unlock(&card->conf_mutex);
766 return rc ? rc : count;
767}
768
769static ssize_t qeth_l3_dev_vipa_add4_store(struct device *dev,
770 struct device_attribute *attr, const char *buf, size_t count)
771{
772 struct qeth_card *card = dev_get_drvdata(dev);
773
774 if (!card)
775 return -EINVAL;
776
777 return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV4);
778}
779
780static QETH_DEVICE_ATTR(vipa_add4, add4, 0644,
781 qeth_l3_dev_vipa_add4_show,
782 qeth_l3_dev_vipa_add4_store);
783
784static ssize_t qeth_l3_dev_vipa_del_store(const char *buf, size_t count,
785 struct qeth_card *card, enum qeth_prot_versions proto)
786{
787 u8 addr[16];
788 int rc;
789
790 mutex_lock(&card->conf_mutex);
791 rc = qeth_l3_parse_vipae(buf, proto, addr);
792 if (!rc)
793 qeth_l3_del_vipa(card, proto, addr);
794 mutex_unlock(&card->conf_mutex);
795 return rc ? rc : count;
796}
797
798static ssize_t qeth_l3_dev_vipa_del4_store(struct device *dev,
799 struct device_attribute *attr, const char *buf, size_t count)
800{
801 struct qeth_card *card = dev_get_drvdata(dev);
802
803 if (!card)
804 return -EINVAL;
805
806 return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV4);
807}
808
809static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
810 qeth_l3_dev_vipa_del4_store);
811
812static ssize_t qeth_l3_dev_vipa_add6_show(struct device *dev,
813 struct device_attribute *attr, char *buf)
814{
815 struct qeth_card *card = dev_get_drvdata(dev);
816
817 if (!card)
818 return -EINVAL;
819
820 return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV6);
821}
822
823static ssize_t qeth_l3_dev_vipa_add6_store(struct device *dev,
824 struct device_attribute *attr, const char *buf, size_t count)
825{
826 struct qeth_card *card = dev_get_drvdata(dev);
827
828 if (!card)
829 return -EINVAL;
830
831 return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV6);
832}
833
834static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
835 qeth_l3_dev_vipa_add6_show,
836 qeth_l3_dev_vipa_add6_store);
837
838static ssize_t qeth_l3_dev_vipa_del6_store(struct device *dev,
839 struct device_attribute *attr, const char *buf, size_t count)
840{
841 struct qeth_card *card = dev_get_drvdata(dev);
842
843 if (!card)
844 return -EINVAL;
845
846 return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV6);
847}
848
849static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
850 qeth_l3_dev_vipa_del6_store);
851
852static struct attribute *qeth_vipa_device_attrs[] = {
853 &dev_attr_vipa_add4.attr,
854 &dev_attr_vipa_del4.attr,
855 &dev_attr_vipa_add6.attr,
856 &dev_attr_vipa_del6.attr,
857 NULL,
858};
859
860static struct attribute_group qeth_device_vipa_group = {
861 .name = "vipa",
862 .attrs = qeth_vipa_device_attrs,
863};
864
865static ssize_t qeth_l3_dev_rxip_add_show(char *buf, struct qeth_card *card,
866 enum qeth_prot_versions proto)
867{
868 struct qeth_ipaddr *ipaddr;
869 char addr_str[40];
870 int entry_len; /* length of 1 entry string, differs between v4 and v6 */
871 unsigned long flags;
872 int i = 0;
873
874 entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
875 entry_len += 2; /* \n + terminator */
876 spin_lock_irqsave(&card->ip_lock, flags);
877 list_for_each_entry(ipaddr, &card->ip_list, entry) {
878 if (ipaddr->proto != proto)
879 continue;
880 if (ipaddr->type != QETH_IP_TYPE_RXIP)
881 continue;
882 /* String must not be longer than PAGE_SIZE. So we check if
883 * string length gets near PAGE_SIZE. Then we can savely display
884 * the next IPv6 address (worst case, compared to IPv4) */
885 if ((PAGE_SIZE - i) <= entry_len)
886 break;
887 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
888 addr_str);
889 i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
890 }
891 spin_unlock_irqrestore(&card->ip_lock, flags);
892 i += snprintf(buf + i, PAGE_SIZE - i, "\n");
893
894 return i;
895}
896
897static ssize_t qeth_l3_dev_rxip_add4_show(struct device *dev,
898 struct device_attribute *attr, char *buf)
899{
900 struct qeth_card *card = dev_get_drvdata(dev);
901
902 if (!card)
903 return -EINVAL;
904
905 return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV4);
906}
907
908static int qeth_l3_parse_rxipe(const char *buf, enum qeth_prot_versions proto,
909 u8 *addr)
910{
911 if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
912 return -EINVAL;
913 }
914 return 0;
915}
916
917static ssize_t qeth_l3_dev_rxip_add_store(const char *buf, size_t count,
918 struct qeth_card *card, enum qeth_prot_versions proto)
919{
920 u8 addr[16] = {0, };
921 int rc;
922
923 mutex_lock(&card->conf_mutex);
924 rc = qeth_l3_parse_rxipe(buf, proto, addr);
925 if (!rc)
926 rc = qeth_l3_add_rxip(card, proto, addr);
927 mutex_unlock(&card->conf_mutex);
928 return rc ? rc : count;
929}
930
931static ssize_t qeth_l3_dev_rxip_add4_store(struct device *dev,
932 struct device_attribute *attr, const char *buf, size_t count)
933{
934 struct qeth_card *card = dev_get_drvdata(dev);
935
936 if (!card)
937 return -EINVAL;
938
939 return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV4);
940}
941
942static QETH_DEVICE_ATTR(rxip_add4, add4, 0644,
943 qeth_l3_dev_rxip_add4_show,
944 qeth_l3_dev_rxip_add4_store);
945
946static ssize_t qeth_l3_dev_rxip_del_store(const char *buf, size_t count,
947 struct qeth_card *card, enum qeth_prot_versions proto)
948{
949 u8 addr[16];
950 int rc;
951
952 mutex_lock(&card->conf_mutex);
953 rc = qeth_l3_parse_rxipe(buf, proto, addr);
954 if (!rc)
955 qeth_l3_del_rxip(card, proto, addr);
956 mutex_unlock(&card->conf_mutex);
957 return rc ? rc : count;
958}
959
960static ssize_t qeth_l3_dev_rxip_del4_store(struct device *dev,
961 struct device_attribute *attr, const char *buf, size_t count)
962{
963 struct qeth_card *card = dev_get_drvdata(dev);
964
965 if (!card)
966 return -EINVAL;
967
968 return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV4);
969}
970
971static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
972 qeth_l3_dev_rxip_del4_store);
973
974static ssize_t qeth_l3_dev_rxip_add6_show(struct device *dev,
975 struct device_attribute *attr, char *buf)
976{
977 struct qeth_card *card = dev_get_drvdata(dev);
978
979 if (!card)
980 return -EINVAL;
981
982 return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV6);
983}
984
985static ssize_t qeth_l3_dev_rxip_add6_store(struct device *dev,
986 struct device_attribute *attr, const char *buf, size_t count)
987{
988 struct qeth_card *card = dev_get_drvdata(dev);
989
990 if (!card)
991 return -EINVAL;
992
993 return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV6);
994}
995
996static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
997 qeth_l3_dev_rxip_add6_show,
998 qeth_l3_dev_rxip_add6_store);
999
1000static ssize_t qeth_l3_dev_rxip_del6_store(struct device *dev,
1001 struct device_attribute *attr, const char *buf, size_t count)
1002{
1003 struct qeth_card *card = dev_get_drvdata(dev);
1004
1005 if (!card)
1006 return -EINVAL;
1007
1008 return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV6);
1009}
1010
1011static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,
1012 qeth_l3_dev_rxip_del6_store);
1013
1014static struct attribute *qeth_rxip_device_attrs[] = {
1015 &dev_attr_rxip_add4.attr,
1016 &dev_attr_rxip_del4.attr,
1017 &dev_attr_rxip_add6.attr,
1018 &dev_attr_rxip_del6.attr,
1019 NULL,
1020};
1021
1022static struct attribute_group qeth_device_rxip_group = {
1023 .name = "rxip",
1024 .attrs = qeth_rxip_device_attrs,
1025};
1026
1027int qeth_l3_create_device_attributes(struct device *dev)
1028{
1029 int ret;
1030
1031 ret = sysfs_create_group(&dev->kobj, &qeth_l3_device_attr_group);
1032 if (ret)
1033 return ret;
1034
1035 ret = sysfs_create_group(&dev->kobj, &qeth_device_ipato_group);
1036 if (ret) {
1037 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1038 return ret;
1039 }
1040
1041 ret = sysfs_create_group(&dev->kobj, &qeth_device_vipa_group);
1042 if (ret) {
1043 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1044 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1045 return ret;
1046 }
1047
1048 ret = sysfs_create_group(&dev->kobj, &qeth_device_rxip_group);
1049 if (ret) {
1050 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1051 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1052 sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1053 return ret;
1054 }
1055 return 0;
1056}
1057
1058void qeth_l3_remove_device_attributes(struct device *dev)
1059{
1060 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1061 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1062 sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1063 sysfs_remove_group(&dev->kobj, &qeth_device_rxip_group);
1064}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright IBM Corp. 2007
4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
5 * Frank Pavlic <fpavlic@de.ibm.com>,
6 * Thomas Spatzier <tspat@de.ibm.com>,
7 * Frank Blaschka <frank.blaschka@de.ibm.com>
8 */
9
10#include <linux/slab.h>
11#include <asm/ebcdic.h>
12#include <linux/hashtable.h>
13#include <linux/inet.h>
14#include "qeth_l3.h"
15
16#define QETH_DEVICE_ATTR(_id, _name, _mode, _show, _store) \
17struct device_attribute dev_attr_##_id = __ATTR(_name, _mode, _show, _store)
18
19static int qeth_l3_string_to_ipaddr(const char *buf,
20 enum qeth_prot_versions proto, u8 *addr)
21{
22 const char *end;
23
24 if ((proto == QETH_PROT_IPV4 && !in4_pton(buf, -1, addr, -1, &end)) ||
25 (proto == QETH_PROT_IPV6 && !in6_pton(buf, -1, addr, -1, &end)))
26 return -EINVAL;
27 return 0;
28}
29
30static ssize_t qeth_l3_dev_route_show(struct qeth_card *card,
31 struct qeth_routing_info *route, char *buf)
32{
33 switch (route->type) {
34 case PRIMARY_ROUTER:
35 return sprintf(buf, "%s\n", "primary router");
36 case SECONDARY_ROUTER:
37 return sprintf(buf, "%s\n", "secondary router");
38 case MULTICAST_ROUTER:
39 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
40 return sprintf(buf, "%s\n", "multicast router+");
41 else
42 return sprintf(buf, "%s\n", "multicast router");
43 case PRIMARY_CONNECTOR:
44 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
45 return sprintf(buf, "%s\n", "primary connector+");
46 else
47 return sprintf(buf, "%s\n", "primary connector");
48 case SECONDARY_CONNECTOR:
49 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
50 return sprintf(buf, "%s\n", "secondary connector+");
51 else
52 return sprintf(buf, "%s\n", "secondary connector");
53 default:
54 return sprintf(buf, "%s\n", "no");
55 }
56}
57
58static ssize_t qeth_l3_dev_route4_show(struct device *dev,
59 struct device_attribute *attr, char *buf)
60{
61 struct qeth_card *card = dev_get_drvdata(dev);
62
63 return qeth_l3_dev_route_show(card, &card->options.route4, buf);
64}
65
66static ssize_t qeth_l3_dev_route_store(struct qeth_card *card,
67 struct qeth_routing_info *route, enum qeth_prot_versions prot,
68 const char *buf, size_t count)
69{
70 enum qeth_routing_types old_route_type = route->type;
71 int rc = 0;
72
73 mutex_lock(&card->conf_mutex);
74 if (sysfs_streq(buf, "no_router")) {
75 route->type = NO_ROUTER;
76 } else if (sysfs_streq(buf, "primary_connector")) {
77 route->type = PRIMARY_CONNECTOR;
78 } else if (sysfs_streq(buf, "secondary_connector")) {
79 route->type = SECONDARY_CONNECTOR;
80 } else if (sysfs_streq(buf, "primary_router")) {
81 route->type = PRIMARY_ROUTER;
82 } else if (sysfs_streq(buf, "secondary_router")) {
83 route->type = SECONDARY_ROUTER;
84 } else if (sysfs_streq(buf, "multicast_router")) {
85 route->type = MULTICAST_ROUTER;
86 } else {
87 rc = -EINVAL;
88 goto out;
89 }
90 if (qeth_card_hw_is_reachable(card) &&
91 (old_route_type != route->type)) {
92 if (prot == QETH_PROT_IPV4)
93 rc = qeth_l3_setrouting_v4(card);
94 else if (prot == QETH_PROT_IPV6)
95 rc = qeth_l3_setrouting_v6(card);
96 }
97out:
98 if (rc)
99 route->type = old_route_type;
100 mutex_unlock(&card->conf_mutex);
101 return rc ? rc : count;
102}
103
104static ssize_t qeth_l3_dev_route4_store(struct device *dev,
105 struct device_attribute *attr, const char *buf, size_t count)
106{
107 struct qeth_card *card = dev_get_drvdata(dev);
108
109 return qeth_l3_dev_route_store(card, &card->options.route4,
110 QETH_PROT_IPV4, buf, count);
111}
112
113static DEVICE_ATTR(route4, 0644, qeth_l3_dev_route4_show,
114 qeth_l3_dev_route4_store);
115
116static ssize_t qeth_l3_dev_route6_show(struct device *dev,
117 struct device_attribute *attr, char *buf)
118{
119 struct qeth_card *card = dev_get_drvdata(dev);
120
121 return qeth_l3_dev_route_show(card, &card->options.route6, buf);
122}
123
124static ssize_t qeth_l3_dev_route6_store(struct device *dev,
125 struct device_attribute *attr, const char *buf, size_t count)
126{
127 struct qeth_card *card = dev_get_drvdata(dev);
128
129 return qeth_l3_dev_route_store(card, &card->options.route6,
130 QETH_PROT_IPV6, buf, count);
131}
132
133static DEVICE_ATTR(route6, 0644, qeth_l3_dev_route6_show,
134 qeth_l3_dev_route6_store);
135
136static ssize_t qeth_l3_dev_sniffer_show(struct device *dev,
137 struct device_attribute *attr, char *buf)
138{
139 struct qeth_card *card = dev_get_drvdata(dev);
140
141 return sprintf(buf, "%i\n", card->options.sniffer ? 1 : 0);
142}
143
144static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
145 struct device_attribute *attr, const char *buf, size_t count)
146{
147 struct qeth_card *card = dev_get_drvdata(dev);
148 int rc = 0;
149 unsigned long i;
150
151 if (!IS_IQD(card))
152 return -EPERM;
153 if (card->options.cq == QETH_CQ_ENABLED)
154 return -EPERM;
155
156 mutex_lock(&card->conf_mutex);
157 if (card->state != CARD_STATE_DOWN) {
158 rc = -EPERM;
159 goto out;
160 }
161
162 rc = kstrtoul(buf, 16, &i);
163 if (rc) {
164 rc = -EINVAL;
165 goto out;
166 }
167 switch (i) {
168 case 0:
169 card->options.sniffer = i;
170 break;
171 case 1:
172 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
173 if (card->ssqd.qdioac2 & CHSC_AC2_SNIFFER_AVAILABLE) {
174 card->options.sniffer = i;
175 qeth_resize_buffer_pool(card, QETH_IN_BUF_COUNT_MAX);
176 } else {
177 rc = -EPERM;
178 }
179
180 break;
181 default:
182 rc = -EINVAL;
183 }
184out:
185 mutex_unlock(&card->conf_mutex);
186 return rc ? rc : count;
187}
188
189static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
190 qeth_l3_dev_sniffer_store);
191
192static ssize_t qeth_l3_dev_hsuid_show(struct device *dev,
193 struct device_attribute *attr, char *buf)
194{
195 struct qeth_card *card = dev_get_drvdata(dev);
196 char tmp_hsuid[9];
197
198 if (!IS_IQD(card))
199 return -EPERM;
200
201 memcpy(tmp_hsuid, card->options.hsuid, sizeof(tmp_hsuid));
202 EBCASC(tmp_hsuid, 8);
203 return sprintf(buf, "%s\n", tmp_hsuid);
204}
205
206static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
207 struct device_attribute *attr, const char *buf, size_t count)
208{
209 struct qeth_card *card = dev_get_drvdata(dev);
210 int rc = 0;
211 char *tmp;
212
213 if (!IS_IQD(card))
214 return -EPERM;
215
216 mutex_lock(&card->conf_mutex);
217 if (card->state != CARD_STATE_DOWN) {
218 rc = -EPERM;
219 goto out;
220 }
221
222 if (card->options.sniffer) {
223 rc = -EPERM;
224 goto out;
225 }
226
227 if (card->options.cq == QETH_CQ_NOTAVAILABLE) {
228 rc = -EPERM;
229 goto out;
230 }
231
232 tmp = strsep((char **)&buf, "\n");
233 if (strlen(tmp) > 8) {
234 rc = -EINVAL;
235 goto out;
236 }
237
238 if (card->options.hsuid[0])
239 /* delete old ip address */
240 qeth_l3_modify_hsuid(card, false);
241
242 if (strlen(tmp) == 0) {
243 /* delete ip address only */
244 card->options.hsuid[0] = '\0';
245 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
246 qeth_configure_cq(card, QETH_CQ_DISABLED);
247 goto out;
248 }
249
250 if (qeth_configure_cq(card, QETH_CQ_ENABLED)) {
251 rc = -EPERM;
252 goto out;
253 }
254
255 snprintf(card->options.hsuid, sizeof(card->options.hsuid),
256 "%-8s", tmp);
257 ASCEBC(card->options.hsuid, 8);
258 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
259
260 rc = qeth_l3_modify_hsuid(card, true);
261
262out:
263 mutex_unlock(&card->conf_mutex);
264 return rc ? rc : count;
265}
266
267static DEVICE_ATTR(hsuid, 0644, qeth_l3_dev_hsuid_show,
268 qeth_l3_dev_hsuid_store);
269
270
271static struct attribute *qeth_l3_device_attrs[] = {
272 &dev_attr_route4.attr,
273 &dev_attr_route6.attr,
274 &dev_attr_sniffer.attr,
275 &dev_attr_hsuid.attr,
276 NULL,
277};
278
279static const struct attribute_group qeth_l3_device_attr_group = {
280 .attrs = qeth_l3_device_attrs,
281};
282
283static ssize_t qeth_l3_dev_ipato_enable_show(struct device *dev,
284 struct device_attribute *attr, char *buf)
285{
286 struct qeth_card *card = dev_get_drvdata(dev);
287
288 return sprintf(buf, "%u\n", card->ipato.enabled ? 1 : 0);
289}
290
291static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev,
292 struct device_attribute *attr, const char *buf, size_t count)
293{
294 struct qeth_card *card = dev_get_drvdata(dev);
295 bool enable;
296 int rc = 0;
297
298 mutex_lock(&card->conf_mutex);
299 if (card->state != CARD_STATE_DOWN) {
300 rc = -EPERM;
301 goto out;
302 }
303
304 mutex_lock(&card->ip_lock);
305 if (sysfs_streq(buf, "toggle")) {
306 enable = !card->ipato.enabled;
307 } else if (kstrtobool(buf, &enable)) {
308 rc = -EINVAL;
309 goto unlock_ip;
310 }
311
312 if (card->ipato.enabled != enable) {
313 card->ipato.enabled = enable;
314 qeth_l3_update_ipato(card);
315 }
316
317unlock_ip:
318 mutex_unlock(&card->ip_lock);
319out:
320 mutex_unlock(&card->conf_mutex);
321 return rc ? rc : count;
322}
323
324static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
325 qeth_l3_dev_ipato_enable_show,
326 qeth_l3_dev_ipato_enable_store);
327
328static ssize_t qeth_l3_dev_ipato_invert4_show(struct device *dev,
329 struct device_attribute *attr, char *buf)
330{
331 struct qeth_card *card = dev_get_drvdata(dev);
332
333 return sprintf(buf, "%u\n", card->ipato.invert4 ? 1 : 0);
334}
335
336static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev,
337 struct device_attribute *attr,
338 const char *buf, size_t count)
339{
340 struct qeth_card *card = dev_get_drvdata(dev);
341 bool invert;
342 int rc = 0;
343
344 mutex_lock(&card->ip_lock);
345 if (sysfs_streq(buf, "toggle")) {
346 invert = !card->ipato.invert4;
347 } else if (kstrtobool(buf, &invert)) {
348 rc = -EINVAL;
349 goto out;
350 }
351
352 if (card->ipato.invert4 != invert) {
353 card->ipato.invert4 = invert;
354 qeth_l3_update_ipato(card);
355 }
356
357out:
358 mutex_unlock(&card->ip_lock);
359 return rc ? rc : count;
360}
361
362static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
363 qeth_l3_dev_ipato_invert4_show,
364 qeth_l3_dev_ipato_invert4_store);
365
366static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
367 enum qeth_prot_versions proto)
368{
369 struct qeth_ipato_entry *ipatoe;
370 int str_len = 0;
371
372 mutex_lock(&card->ip_lock);
373 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
374 char addr_str[40];
375 int entry_len;
376
377 if (ipatoe->proto != proto)
378 continue;
379
380 entry_len = qeth_l3_ipaddr_to_string(proto, ipatoe->addr,
381 addr_str);
382 if (entry_len < 0)
383 continue;
384
385 /* Append /%mask to the entry: */
386 entry_len += 1 + ((proto == QETH_PROT_IPV4) ? 2 : 3);
387 /* Enough room to format %entry\n into null terminated page? */
388 if (entry_len + 1 > PAGE_SIZE - str_len - 1)
389 break;
390
391 entry_len = scnprintf(buf, PAGE_SIZE - str_len,
392 "%s/%i\n", addr_str, ipatoe->mask_bits);
393 str_len += entry_len;
394 buf += entry_len;
395 }
396 mutex_unlock(&card->ip_lock);
397
398 return str_len ? str_len : scnprintf(buf, PAGE_SIZE, "\n");
399}
400
401static ssize_t qeth_l3_dev_ipato_add4_show(struct device *dev,
402 struct device_attribute *attr, char *buf)
403{
404 struct qeth_card *card = dev_get_drvdata(dev);
405
406 return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV4);
407}
408
409static int qeth_l3_parse_ipatoe(const char *buf, enum qeth_prot_versions proto,
410 u8 *addr, unsigned int *mask_bits)
411{
412 char *sep;
413 int rc;
414
415 /* Expected input pattern: %addr/%mask */
416 sep = strnchr(buf, 40, '/');
417 if (!sep)
418 return -EINVAL;
419
420 /* Terminate the %addr sub-string, and parse it: */
421 *sep = '\0';
422 rc = qeth_l3_string_to_ipaddr(buf, proto, addr);
423 if (rc)
424 return rc;
425
426 rc = kstrtouint(sep + 1, 10, mask_bits);
427 if (rc)
428 return rc;
429
430 if (*mask_bits > ((proto == QETH_PROT_IPV4) ? 32 : 128))
431 return -EINVAL;
432
433 return 0;
434}
435
436static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
437 struct qeth_card *card, enum qeth_prot_versions proto)
438{
439 struct qeth_ipato_entry *ipatoe;
440 unsigned int mask_bits;
441 u8 addr[16];
442 int rc = 0;
443
444 rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
445 if (rc)
446 return rc;
447
448 ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
449 if (!ipatoe)
450 return -ENOMEM;
451
452 ipatoe->proto = proto;
453 memcpy(ipatoe->addr, addr, (proto == QETH_PROT_IPV4) ? 4 : 16);
454 ipatoe->mask_bits = mask_bits;
455
456 rc = qeth_l3_add_ipato_entry(card, ipatoe);
457 if (rc)
458 kfree(ipatoe);
459
460 return rc ? rc : count;
461}
462
463static ssize_t qeth_l3_dev_ipato_add4_store(struct device *dev,
464 struct device_attribute *attr, const char *buf, size_t count)
465{
466 struct qeth_card *card = dev_get_drvdata(dev);
467
468 return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV4);
469}
470
471static QETH_DEVICE_ATTR(ipato_add4, add4, 0644,
472 qeth_l3_dev_ipato_add4_show,
473 qeth_l3_dev_ipato_add4_store);
474
475static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
476 struct qeth_card *card, enum qeth_prot_versions proto)
477{
478 unsigned int mask_bits;
479 u8 addr[16];
480 int rc = 0;
481
482 rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
483 if (!rc)
484 rc = qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
485 return rc ? rc : count;
486}
487
488static ssize_t qeth_l3_dev_ipato_del4_store(struct device *dev,
489 struct device_attribute *attr, const char *buf, size_t count)
490{
491 struct qeth_card *card = dev_get_drvdata(dev);
492
493 return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV4);
494}
495
496static QETH_DEVICE_ATTR(ipato_del4, del4, 0200, NULL,
497 qeth_l3_dev_ipato_del4_store);
498
499static ssize_t qeth_l3_dev_ipato_invert6_show(struct device *dev,
500 struct device_attribute *attr, char *buf)
501{
502 struct qeth_card *card = dev_get_drvdata(dev);
503
504 return sprintf(buf, "%u\n", card->ipato.invert6 ? 1 : 0);
505}
506
507static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev,
508 struct device_attribute *attr, const char *buf, size_t count)
509{
510 struct qeth_card *card = dev_get_drvdata(dev);
511 bool invert;
512 int rc = 0;
513
514 mutex_lock(&card->ip_lock);
515 if (sysfs_streq(buf, "toggle")) {
516 invert = !card->ipato.invert6;
517 } else if (kstrtobool(buf, &invert)) {
518 rc = -EINVAL;
519 goto out;
520 }
521
522 if (card->ipato.invert6 != invert) {
523 card->ipato.invert6 = invert;
524 qeth_l3_update_ipato(card);
525 }
526
527out:
528 mutex_unlock(&card->ip_lock);
529 return rc ? rc : count;
530}
531
532static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
533 qeth_l3_dev_ipato_invert6_show,
534 qeth_l3_dev_ipato_invert6_store);
535
536
537static ssize_t qeth_l3_dev_ipato_add6_show(struct device *dev,
538 struct device_attribute *attr, char *buf)
539{
540 struct qeth_card *card = dev_get_drvdata(dev);
541
542 return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV6);
543}
544
545static ssize_t qeth_l3_dev_ipato_add6_store(struct device *dev,
546 struct device_attribute *attr, const char *buf, size_t count)
547{
548 struct qeth_card *card = dev_get_drvdata(dev);
549
550 return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV6);
551}
552
553static QETH_DEVICE_ATTR(ipato_add6, add6, 0644,
554 qeth_l3_dev_ipato_add6_show,
555 qeth_l3_dev_ipato_add6_store);
556
557static ssize_t qeth_l3_dev_ipato_del6_store(struct device *dev,
558 struct device_attribute *attr, const char *buf, size_t count)
559{
560 struct qeth_card *card = dev_get_drvdata(dev);
561
562 return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV6);
563}
564
565static QETH_DEVICE_ATTR(ipato_del6, del6, 0200, NULL,
566 qeth_l3_dev_ipato_del6_store);
567
568static struct attribute *qeth_ipato_device_attrs[] = {
569 &dev_attr_ipato_enable.attr,
570 &dev_attr_ipato_invert4.attr,
571 &dev_attr_ipato_add4.attr,
572 &dev_attr_ipato_del4.attr,
573 &dev_attr_ipato_invert6.attr,
574 &dev_attr_ipato_add6.attr,
575 &dev_attr_ipato_del6.attr,
576 NULL,
577};
578
579static const struct attribute_group qeth_device_ipato_group = {
580 .name = "ipa_takeover",
581 .attrs = qeth_ipato_device_attrs,
582};
583
584static ssize_t qeth_l3_dev_ip_add_show(struct device *dev, char *buf,
585 enum qeth_prot_versions proto,
586 enum qeth_ip_types type)
587{
588 struct qeth_card *card = dev_get_drvdata(dev);
589 struct qeth_ipaddr *ipaddr;
590 int str_len = 0;
591 int i;
592
593 mutex_lock(&card->ip_lock);
594 hash_for_each(card->ip_htable, i, ipaddr, hnode) {
595 char addr_str[40];
596 int entry_len;
597
598 if (ipaddr->proto != proto || ipaddr->type != type)
599 continue;
600
601 entry_len = qeth_l3_ipaddr_to_string(proto, (u8 *)&ipaddr->u,
602 addr_str);
603 if (entry_len < 0)
604 continue;
605
606 /* Enough room to format %addr\n into null terminated page? */
607 if (entry_len + 1 > PAGE_SIZE - str_len - 1)
608 break;
609
610 entry_len = scnprintf(buf, PAGE_SIZE - str_len, "%s\n",
611 addr_str);
612 str_len += entry_len;
613 buf += entry_len;
614 }
615 mutex_unlock(&card->ip_lock);
616
617 return str_len ? str_len : scnprintf(buf, PAGE_SIZE, "\n");
618}
619
620static ssize_t qeth_l3_dev_vipa_add4_show(struct device *dev,
621 struct device_attribute *attr,
622 char *buf)
623{
624 return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV4,
625 QETH_IP_TYPE_VIPA);
626}
627
628static ssize_t qeth_l3_vipa_store(struct device *dev, const char *buf, bool add,
629 size_t count, enum qeth_prot_versions proto)
630{
631 struct qeth_card *card = dev_get_drvdata(dev);
632 u8 addr[16] = {0, };
633 int rc;
634
635 rc = qeth_l3_string_to_ipaddr(buf, proto, addr);
636 if (!rc)
637 rc = qeth_l3_modify_rxip_vipa(card, add, addr,
638 QETH_IP_TYPE_VIPA, proto);
639 return rc ? rc : count;
640}
641
642static ssize_t qeth_l3_dev_vipa_add4_store(struct device *dev,
643 struct device_attribute *attr, const char *buf, size_t count)
644{
645 return qeth_l3_vipa_store(dev, buf, true, count, QETH_PROT_IPV4);
646}
647
648static QETH_DEVICE_ATTR(vipa_add4, add4, 0644,
649 qeth_l3_dev_vipa_add4_show,
650 qeth_l3_dev_vipa_add4_store);
651
652static ssize_t qeth_l3_dev_vipa_del4_store(struct device *dev,
653 struct device_attribute *attr, const char *buf, size_t count)
654{
655 return qeth_l3_vipa_store(dev, buf, true, count, QETH_PROT_IPV4);
656}
657
658static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
659 qeth_l3_dev_vipa_del4_store);
660
661static ssize_t qeth_l3_dev_vipa_add6_show(struct device *dev,
662 struct device_attribute *attr,
663 char *buf)
664{
665 return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV6,
666 QETH_IP_TYPE_VIPA);
667}
668
669static ssize_t qeth_l3_dev_vipa_add6_store(struct device *dev,
670 struct device_attribute *attr, const char *buf, size_t count)
671{
672 return qeth_l3_vipa_store(dev, buf, true, count, QETH_PROT_IPV6);
673}
674
675static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
676 qeth_l3_dev_vipa_add6_show,
677 qeth_l3_dev_vipa_add6_store);
678
679static ssize_t qeth_l3_dev_vipa_del6_store(struct device *dev,
680 struct device_attribute *attr, const char *buf, size_t count)
681{
682 return qeth_l3_vipa_store(dev, buf, false, count, QETH_PROT_IPV6);
683}
684
685static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
686 qeth_l3_dev_vipa_del6_store);
687
688static struct attribute *qeth_vipa_device_attrs[] = {
689 &dev_attr_vipa_add4.attr,
690 &dev_attr_vipa_del4.attr,
691 &dev_attr_vipa_add6.attr,
692 &dev_attr_vipa_del6.attr,
693 NULL,
694};
695
696static const struct attribute_group qeth_device_vipa_group = {
697 .name = "vipa",
698 .attrs = qeth_vipa_device_attrs,
699};
700
701static ssize_t qeth_l3_dev_rxip_add4_show(struct device *dev,
702 struct device_attribute *attr,
703 char *buf)
704{
705 return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV4,
706 QETH_IP_TYPE_RXIP);
707}
708
709static int qeth_l3_parse_rxipe(const char *buf, enum qeth_prot_versions proto,
710 u8 *addr)
711{
712 __be32 ipv4_addr;
713 struct in6_addr ipv6_addr;
714
715 if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
716 return -EINVAL;
717 }
718 if (proto == QETH_PROT_IPV4) {
719 memcpy(&ipv4_addr, addr, sizeof(ipv4_addr));
720 if (ipv4_is_multicast(ipv4_addr)) {
721 QETH_DBF_MESSAGE(2, "multicast rxip not supported.\n");
722 return -EINVAL;
723 }
724 } else if (proto == QETH_PROT_IPV6) {
725 memcpy(&ipv6_addr, addr, sizeof(ipv6_addr));
726 if (ipv6_addr_is_multicast(&ipv6_addr)) {
727 QETH_DBF_MESSAGE(2, "multicast rxip not supported.\n");
728 return -EINVAL;
729 }
730 }
731
732 return 0;
733}
734
735static ssize_t qeth_l3_rxip_store(struct device *dev, const char *buf, bool add,
736 size_t count, enum qeth_prot_versions proto)
737{
738 struct qeth_card *card = dev_get_drvdata(dev);
739 u8 addr[16] = {0, };
740 int rc;
741
742 rc = qeth_l3_parse_rxipe(buf, proto, addr);
743 if (!rc)
744 rc = qeth_l3_modify_rxip_vipa(card, add, addr,
745 QETH_IP_TYPE_RXIP, proto);
746 return rc ? rc : count;
747}
748
749static ssize_t qeth_l3_dev_rxip_add4_store(struct device *dev,
750 struct device_attribute *attr, const char *buf, size_t count)
751{
752 return qeth_l3_rxip_store(dev, buf, true, count, QETH_PROT_IPV4);
753}
754
755static QETH_DEVICE_ATTR(rxip_add4, add4, 0644,
756 qeth_l3_dev_rxip_add4_show,
757 qeth_l3_dev_rxip_add4_store);
758
759static ssize_t qeth_l3_dev_rxip_del4_store(struct device *dev,
760 struct device_attribute *attr, const char *buf, size_t count)
761{
762 return qeth_l3_rxip_store(dev, buf, false, count, QETH_PROT_IPV4);
763}
764
765static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
766 qeth_l3_dev_rxip_del4_store);
767
768static ssize_t qeth_l3_dev_rxip_add6_show(struct device *dev,
769 struct device_attribute *attr,
770 char *buf)
771{
772 return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV6,
773 QETH_IP_TYPE_RXIP);
774}
775
776static ssize_t qeth_l3_dev_rxip_add6_store(struct device *dev,
777 struct device_attribute *attr, const char *buf, size_t count)
778{
779 return qeth_l3_rxip_store(dev, buf, true, count, QETH_PROT_IPV6);
780}
781
782static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
783 qeth_l3_dev_rxip_add6_show,
784 qeth_l3_dev_rxip_add6_store);
785
786static ssize_t qeth_l3_dev_rxip_del6_store(struct device *dev,
787 struct device_attribute *attr, const char *buf, size_t count)
788{
789 return qeth_l3_rxip_store(dev, buf, false, count, QETH_PROT_IPV6);
790}
791
792static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,
793 qeth_l3_dev_rxip_del6_store);
794
795static struct attribute *qeth_rxip_device_attrs[] = {
796 &dev_attr_rxip_add4.attr,
797 &dev_attr_rxip_del4.attr,
798 &dev_attr_rxip_add6.attr,
799 &dev_attr_rxip_del6.attr,
800 NULL,
801};
802
803static const struct attribute_group qeth_device_rxip_group = {
804 .name = "rxip",
805 .attrs = qeth_rxip_device_attrs,
806};
807
808const struct attribute_group *qeth_l3_attr_groups[] = {
809 &qeth_l3_device_attr_group,
810 &qeth_device_ipato_group,
811 &qeth_device_vipa_group,
812 &qeth_device_rxip_group,
813 NULL,
814};