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err.h: IS_ERR() can accept __user pointers
[mirror_ubuntu-artful-kernel.git] / drivers / s390 / net / qeth_l3_sys.c
CommitLineData
4a71df50 1/*
4a71df50
FB		 2 * Copyright IBM Corp. 2007
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
5a0e3ad6 9#include <linux/slab.h>
b3332930 10#include <asm/ebcdic.h>
4a71df50
FB		 11#include "qeth_l3.h"
12
13#define QETH_DEVICE_ATTR(_id, _name, _mode, _show, _store) \
14struct device_attribute dev_attr_##_id = __ATTR(_name, _mode, _show, _store)
15
4a71df50
FB		 16static ssize_t qeth_l3_dev_route_show(struct qeth_card *card,
17 struct qeth_routing_info *route, char *buf)
18{
19 switch (route->type) {
20 case PRIMARY_ROUTER:
21 return sprintf(buf, "%s\n", "primary router");
22 case SECONDARY_ROUTER:
23 return sprintf(buf, "%s\n", "secondary router");
24 case MULTICAST_ROUTER:
25 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
26 return sprintf(buf, "%s\n", "multicast router+");
27 else
28 return sprintf(buf, "%s\n", "multicast router");
29 case PRIMARY_CONNECTOR:
30 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
31 return sprintf(buf, "%s\n", "primary connector+");
32 else
33 return sprintf(buf, "%s\n", "primary connector");
34 case SECONDARY_CONNECTOR:
35 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
36 return sprintf(buf, "%s\n", "secondary connector+");
37 else
38 return sprintf(buf, "%s\n", "secondary connector");
39 default:
40 return sprintf(buf, "%s\n", "no");
41 }
42}
43
44static ssize_t qeth_l3_dev_route4_show(struct device *dev,
45 struct device_attribute *attr, char *buf)
46{
47 struct qeth_card *card = dev_get_drvdata(dev);
48
49 if (!card)
50 return -EINVAL;
51
52 return qeth_l3_dev_route_show(card, &card->options.route4, buf);
53}
54
55static ssize_t qeth_l3_dev_route_store(struct qeth_card *card,
56 struct qeth_routing_info *route, enum qeth_prot_versions prot,
57 const char *buf, size_t count)
58{
59 enum qeth_routing_types old_route_type = route->type;
60 char *tmp;
c4949f07 61 int rc = 0;
4a71df50
FB		 62
63 tmp = strsep((char **) &buf, "\n");
c4949f07 64 mutex_lock(&card->conf_mutex);
4a71df50
FB		 65 if (!strcmp(tmp, "no_router")) {
66 route->type = NO_ROUTER;
67 } else if (!strcmp(tmp, "primary_connector")) {
68 route->type = PRIMARY_CONNECTOR;
69 } else if (!strcmp(tmp, "secondary_connector")) {
70 route->type = SECONDARY_CONNECTOR;
71 } else if (!strcmp(tmp, "primary_router")) {
72 route->type = PRIMARY_ROUTER;
73 } else if (!strcmp(tmp, "secondary_router")) {
74 route->type = SECONDARY_ROUTER;
75 } else if (!strcmp(tmp, "multicast_router")) {
76 route->type = MULTICAST_ROUTER;
77 } else {
c4949f07
FB		 78 rc = -EINVAL;
79 goto out;
4a71df50
FB		 80 }
81 if (((card->state == CARD_STATE_SOFTSETUP) ||
82 (card->state == CARD_STATE_UP)) &&
83 (old_route_type != route->type)) {
84 if (prot == QETH_PROT_IPV4)
85 rc = qeth_l3_setrouting_v4(card);
86 else if (prot == QETH_PROT_IPV6)
87 rc = qeth_l3_setrouting_v6(card);
88 }
c4949f07 89out:
82e2e782
SR		 90 if (rc)
91 route->type = old_route_type;
c4949f07
FB		 92 mutex_unlock(&card->conf_mutex);
93 return rc ? rc : count;
4a71df50
FB		 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
4a71df50
FB		 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
4a71df50
FB		 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;
c4949f07 153 int i, rc = 0;
4a71df50
FB		 154
155 if (!card)
156 return -EINVAL;
157
c4949f07 158 mutex_lock(&card->conf_mutex);
4a71df50 159 if ((card->state != CARD_STATE_DOWN) &&
c4949f07
FB		 160 (card->state != CARD_STATE_RECOVER)) {
161 rc = -EPERM;
162 goto out;
163 }
4a71df50
FB		 164
165 i = simple_strtoul(buf, &tmp, 16);
166 if ((i == 0) || (i == 1))
167 card->options.fake_broadcast = i;
c4949f07
FB		 168 else
169 rc = -EINVAL;
170out:
171 mutex_unlock(&card->conf_mutex);
172 return rc ? rc : count;
4a71df50
FB		 173}
174
175static DEVICE_ATTR(fake_broadcast, 0644, qeth_l3_dev_fake_broadcast_show,
176 qeth_l3_dev_fake_broadcast_store);
177
76b11f8e
UB		 178static ssize_t qeth_l3_dev_sniffer_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 return sprintf(buf, "%i\n", card->options.sniffer ? 1 : 0);
187}
188
189static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
190 struct device_attribute *attr, const char *buf, size_t count)
191{
192 struct qeth_card *card = dev_get_drvdata(dev);
c4949f07 193 int rc = 0;
76b11f8e
UB		 194 unsigned long i;
195
196 if (!card)
197 return -EINVAL;
198
199 if (card->info.type != QETH_CARD_TYPE_IQD)
200 return -EPERM;
b3332930
FB		 201 if (card->options.cq == QETH_CQ_ENABLED)
202 return -EPERM;
76b11f8e 203
c4949f07 204 mutex_lock(&card->conf_mutex);
76b11f8e 205 if ((card->state != CARD_STATE_DOWN) &&
c4949f07
FB		 206 (card->state != CARD_STATE_RECOVER)) {
207 rc = -EPERM;
208 goto out;
209 }
76b11f8e 210
c4949f07
FB		 211 rc = strict_strtoul(buf, 16, &i);
212 if (rc) {
213 rc = -EINVAL;
214 goto out;
215 }
76b11f8e
UB		 216 switch (i) {
217 case 0:
218 card->options.sniffer = i;
219 break;
220 case 1:
c4949f07 221 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
76b11f8e
UB		 222 if (card->ssqd.qdioac2 & QETH_SNIFF_AVAIL) {
223 card->options.sniffer = i;
224 if (card->qdio.init_pool.buf_count !=
225 QETH_IN_BUF_COUNT_MAX)
226 qeth_realloc_buffer_pool(card,
227 QETH_IN_BUF_COUNT_MAX);
76b11f8e 228 } else
c4949f07 229 rc = -EPERM;
6cc31d09
UB		 230 break;
231 default:
c4949f07 232 rc = -EINVAL;
76b11f8e 233 }
c4949f07
FB		 234out:
235 mutex_unlock(&card->conf_mutex);
236 return rc ? rc : count;
76b11f8e
UB		 237}
238
239static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
240 qeth_l3_dev_sniffer_store);
241
b3332930
FB		 242
243static ssize_t qeth_l3_dev_hsuid_show(struct device *dev,
244 struct device_attribute *attr, char *buf)
245{
246 struct qeth_card *card = dev_get_drvdata(dev);
247 char tmp_hsuid[9];
248
249 if (!card)
250 return -EINVAL;
251
252 if (card->info.type != QETH_CARD_TYPE_IQD)
253 return -EPERM;
254
255 if (card->state == CARD_STATE_DOWN)
256 return -EPERM;
257
258 memcpy(tmp_hsuid, card->options.hsuid, sizeof(tmp_hsuid));
259 EBCASC(tmp_hsuid, 8);
260 return sprintf(buf, "%s\n", tmp_hsuid);
261}
262
263static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
264 struct device_attribute *attr, const char *buf, size_t count)
265{
266 struct qeth_card *card = dev_get_drvdata(dev);
267 struct qeth_ipaddr *addr;
268 char *tmp;
269 int i;
270
271 if (!card)
272 return -EINVAL;
273
274 if (card->info.type != QETH_CARD_TYPE_IQD)
275 return -EPERM;
276 if (card->state != CARD_STATE_DOWN &&
277 card->state != CARD_STATE_RECOVER)
278 return -EPERM;
279 if (card->options.sniffer)
280 return -EPERM;
281 if (card->options.cq == QETH_CQ_NOTAVAILABLE)
282 return -EPERM;
283
284 tmp = strsep((char **)&buf, "\n");
285 if (strlen(tmp) > 8)
286 return -EINVAL;
287
288 if (card->options.hsuid[0]) {
289 /* delete old ip address */
290 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
291 if (addr != NULL) {
292 addr->u.a6.addr.s6_addr32[0] = 0xfe800000;
293 addr->u.a6.addr.s6_addr32[1] = 0x00000000;
294 for (i = 8; i < 16; i++)
295 addr->u.a6.addr.s6_addr[i] =
296 card->options.hsuid[i - 8];
297 addr->u.a6.pfxlen = 0;
298 addr->type = QETH_IP_TYPE_NORMAL;
299 } else
300 return -ENOMEM;
301 if (!qeth_l3_delete_ip(card, addr))
302 kfree(addr);
303 qeth_l3_set_ip_addr_list(card);
304 }
305
306 if (strlen(tmp) == 0) {
307 /* delete ip address only */
308 card->options.hsuid[0] = '\0';
309 if (card->dev)
310 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
311 qeth_configure_cq(card, QETH_CQ_DISABLED);
312 return count;
313 }
314
315 if (qeth_configure_cq(card, QETH_CQ_ENABLED))
316 return -EPERM;
317
318 for (i = 0; i < 8; i++)
319 card->options.hsuid[i] = ' ';
320 card->options.hsuid[8] = '\0';
321 strncpy(card->options.hsuid, tmp, strlen(tmp));
322 ASCEBC(card->options.hsuid, 8);
323 if (card->dev)
324 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
325
326 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
327 if (addr != NULL) {
328 addr->u.a6.addr.s6_addr32[0] = 0xfe800000;
329 addr->u.a6.addr.s6_addr32[1] = 0x00000000;
330 for (i = 8; i < 16; i++)
331 addr->u.a6.addr.s6_addr[i] = card->options.hsuid[i - 8];
332 addr->u.a6.pfxlen = 0;
333 addr->type = QETH_IP_TYPE_NORMAL;
334 } else
335 return -ENOMEM;
336 if (!qeth_l3_add_ip(card, addr))
337 kfree(addr);
338 qeth_l3_set_ip_addr_list(card);
339
340 return count;
341}
342
343static DEVICE_ATTR(hsuid, 0644, qeth_l3_dev_hsuid_show,
344 qeth_l3_dev_hsuid_store);
345
346
4a71df50
FB		 347static struct attribute *qeth_l3_device_attrs[] = {
348 &dev_attr_route4.attr,
349 &dev_attr_route6.attr,
350 &dev_attr_fake_broadcast.attr,
76b11f8e 351 &dev_attr_sniffer.attr,
b3332930 352 &dev_attr_hsuid.attr,
4a71df50
FB		 353 NULL,
354};
355
356static struct attribute_group qeth_l3_device_attr_group = {
357 .attrs = qeth_l3_device_attrs,
358};
359
360static ssize_t qeth_l3_dev_ipato_enable_show(struct device *dev,
361 struct device_attribute *attr, char *buf)
362{
363 struct qeth_card *card = dev_get_drvdata(dev);
364
365 if (!card)
366 return -EINVAL;
367
368 return sprintf(buf, "%i\n", card->ipato.enabled? 1:0);
369}
370
371static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev,
372 struct device_attribute *attr, const char *buf, size_t count)
373{
374 struct qeth_card *card = dev_get_drvdata(dev);
6298263a 375 struct qeth_ipaddr *tmpipa, *t;
4a71df50 376 char *tmp;
c4949f07 377 int rc = 0;
4a71df50
FB		 378
379 if (!card)
380 return -EINVAL;
381
c4949f07 382 mutex_lock(&card->conf_mutex);
4a71df50 383 if ((card->state != CARD_STATE_DOWN) &&
c4949f07
FB		 384 (card->state != CARD_STATE_RECOVER)) {
385 rc = -EPERM;
386 goto out;
387 }
4a71df50
FB		 388
389 tmp = strsep((char **) &buf, "\n");
390 if (!strcmp(tmp, "toggle")) {
391 card->ipato.enabled = (card->ipato.enabled)? 0 : 1;
392 } else if (!strcmp(tmp, "1")) {
393 card->ipato.enabled = 1;
6298263a
KDW		 394 list_for_each_entry_safe(tmpipa, t, card->ip_tbd_list, entry) {
395 if ((tmpipa->type == QETH_IP_TYPE_NORMAL) &&
396 qeth_l3_is_addr_covered_by_ipato(card, tmpipa))
397 tmpipa->set_flags |=
398 QETH_IPA_SETIP_TAKEOVER_FLAG;
399 }
400
4a71df50
FB		 401 } else if (!strcmp(tmp, "0")) {
402 card->ipato.enabled = 0;
6298263a
KDW		 403 list_for_each_entry_safe(tmpipa, t, card->ip_tbd_list, entry) {
404 if (tmpipa->set_flags &
405 QETH_IPA_SETIP_TAKEOVER_FLAG)
406 tmpipa->set_flags &=
407 ~QETH_IPA_SETIP_TAKEOVER_FLAG;
408 }
c4949f07
FB		 409 } else
410 rc = -EINVAL;
411out:
412 mutex_unlock(&card->conf_mutex);
413 return rc ? rc : count;
4a71df50
FB		 414}
415
416static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
417 qeth_l3_dev_ipato_enable_show,
418 qeth_l3_dev_ipato_enable_store);
419
420static ssize_t qeth_l3_dev_ipato_invert4_show(struct device *dev,
421 struct device_attribute *attr, char *buf)
422{
423 struct qeth_card *card = dev_get_drvdata(dev);
424
425 if (!card)
426 return -EINVAL;
427
428 return sprintf(buf, "%i\n", card->ipato.invert4? 1:0);
429}
430
431static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev,
432 struct device_attribute *attr,
433 const char *buf, size_t count)
434{
435 struct qeth_card *card = dev_get_drvdata(dev);
436 char *tmp;
c4949f07 437 int rc = 0;
4a71df50
FB		 438
439 if (!card)
440 return -EINVAL;
441
c4949f07 442 mutex_lock(&card->conf_mutex);
4a71df50
FB		 443 tmp = strsep((char **) &buf, "\n");
444 if (!strcmp(tmp, "toggle")) {
445 card->ipato.invert4 = (card->ipato.invert4)? 0 : 1;
446 } else if (!strcmp(tmp, "1")) {
447 card->ipato.invert4 = 1;
448 } else if (!strcmp(tmp, "0")) {
449 card->ipato.invert4 = 0;
c4949f07
FB		 450 } else
451 rc = -EINVAL;
452 mutex_unlock(&card->conf_mutex);
453 return rc ? rc : count;
4a71df50
FB		 454}
455
456static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
457 qeth_l3_dev_ipato_invert4_show,
458 qeth_l3_dev_ipato_invert4_store);
459
460static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
461 enum qeth_prot_versions proto)
462{
463 struct qeth_ipato_entry *ipatoe;
464 unsigned long flags;
465 char addr_str[40];
466 int entry_len; /* length of 1 entry string, differs between v4 and v6 */
467 int i = 0;
468
469 entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
470 /* add strlen for "/<mask>\n" */
471 entry_len += (proto == QETH_PROT_IPV4)? 5 : 6;
472 spin_lock_irqsave(&card->ip_lock, flags);
473 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
474 if (ipatoe->proto != proto)
475 continue;
476 /* String must not be longer than PAGE_SIZE. So we check if
477 * string length gets near PAGE_SIZE. Then we can savely display
478 * the next IPv6 address (worst case, compared to IPv4) */
479 if ((PAGE_SIZE - i) <= entry_len)
480 break;
481 qeth_l3_ipaddr_to_string(proto, ipatoe->addr, addr_str);
482 i += snprintf(buf + i, PAGE_SIZE - i,
483 "%s/%i\n", addr_str, ipatoe->mask_bits);
484 }
485 spin_unlock_irqrestore(&card->ip_lock, flags);
486 i += snprintf(buf + i, PAGE_SIZE - i, "\n");
487
488 return i;
489}
490
491static ssize_t qeth_l3_dev_ipato_add4_show(struct device *dev,
492 struct device_attribute *attr, char *buf)
493{
494 struct qeth_card *card = dev_get_drvdata(dev);
495
496 if (!card)
497 return -EINVAL;
498
499 return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV4);
500}
501
502static int qeth_l3_parse_ipatoe(const char *buf, enum qeth_prot_versions proto,
503 u8 *addr, int *mask_bits)
504{
505 const char *start, *end;
506 char *tmp;
507 char buffer[40] = {0, };
508
509 start = buf;
510 /* get address string */
511 end = strchr(start, '/');
512 if (!end || (end - start >= 40)) {
4a71df50
FB		 513 return -EINVAL;
514 }
515 strncpy(buffer, start, end - start);
516 if (qeth_l3_string_to_ipaddr(buffer, proto, addr)) {
4a71df50
FB		 517 return -EINVAL;
518 }
519 start = end + 1;
520 *mask_bits = simple_strtoul(start, &tmp, 10);
521 if (!strlen(start) ||
522 (tmp == start) ||
523 (*mask_bits > ((proto == QETH_PROT_IPV4) ? 32 : 128))) {
4a71df50
FB		 524 return -EINVAL;
525 }
526 return 0;
527}
528
529static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
530 struct qeth_card *card, enum qeth_prot_versions proto)
531{
532 struct qeth_ipato_entry *ipatoe;
533 u8 addr[16];
534 int mask_bits;
c4949f07 535 int rc = 0;
4a71df50 536
c4949f07 537 mutex_lock(&card->conf_mutex);
4a71df50
FB		 538 rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
539 if (rc)
c4949f07 540 goto out;
4a71df50
FB		 541
542 ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
543 if (!ipatoe) {
c4949f07
FB		 544 rc = -ENOMEM;
545 goto out;
4a71df50
FB		 546 }
547 ipatoe->proto = proto;
548 memcpy(ipatoe->addr, addr, (proto == QETH_PROT_IPV4)? 4:16);
549 ipatoe->mask_bits = mask_bits;
550
551 rc = qeth_l3_add_ipato_entry(card, ipatoe);
c4949f07 552 if (rc)
4a71df50 553 kfree(ipatoe);
c4949f07
FB		 554out:
555 mutex_unlock(&card->conf_mutex);
556 return rc ? rc : count;
4a71df50
FB		 557}
558
559static ssize_t qeth_l3_dev_ipato_add4_store(struct device *dev,
560 struct device_attribute *attr, const char *buf, size_t count)
561{
562 struct qeth_card *card = dev_get_drvdata(dev);
563
564 if (!card)
565 return -EINVAL;
566
567 return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV4);
568}
569
570static QETH_DEVICE_ATTR(ipato_add4, add4, 0644,
571 qeth_l3_dev_ipato_add4_show,
572 qeth_l3_dev_ipato_add4_store);
573
574static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
575 struct qeth_card *card, enum qeth_prot_versions proto)
576{
577 u8 addr[16];
578 int mask_bits;
c4949f07 579 int rc = 0;
4a71df50 580
c4949f07 581 mutex_lock(&card->conf_mutex);
4a71df50 582 rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
c4949f07
FB		 583 if (!rc)
584 qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
585 mutex_unlock(&card->conf_mutex);
586 return rc ? rc : count;
4a71df50
FB		 587}
588
589static ssize_t qeth_l3_dev_ipato_del4_store(struct device *dev,
590 struct device_attribute *attr, const char *buf, size_t count)
591{
592 struct qeth_card *card = dev_get_drvdata(dev);
593
594 if (!card)
595 return -EINVAL;
596
597 return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV4);
598}
599
600static QETH_DEVICE_ATTR(ipato_del4, del4, 0200, NULL,
601 qeth_l3_dev_ipato_del4_store);
602
603static ssize_t qeth_l3_dev_ipato_invert6_show(struct device *dev,
604 struct device_attribute *attr, char *buf)
605{
606 struct qeth_card *card = dev_get_drvdata(dev);
607
608 if (!card)
609 return -EINVAL;
610
611 return sprintf(buf, "%i\n", card->ipato.invert6? 1:0);
612}
613
614static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev,
615 struct device_attribute *attr, const char *buf, size_t count)
616{
617 struct qeth_card *card = dev_get_drvdata(dev);
618 char *tmp;
c4949f07 619 int rc = 0;
4a71df50
FB		 620
621 if (!card)
622 return -EINVAL;
623
c4949f07 624 mutex_lock(&card->conf_mutex);
4a71df50
FB		 625 tmp = strsep((char **) &buf, "\n");
626 if (!strcmp(tmp, "toggle")) {
627 card->ipato.invert6 = (card->ipato.invert6)? 0 : 1;
628 } else if (!strcmp(tmp, "1")) {
629 card->ipato.invert6 = 1;
630 } else if (!strcmp(tmp, "0")) {
631 card->ipato.invert6 = 0;
c4949f07
FB		 632 } else
633 rc = -EINVAL;
634 mutex_unlock(&card->conf_mutex);
635 return rc ? rc : count;
4a71df50
FB		 636}
637
638static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
639 qeth_l3_dev_ipato_invert6_show,
640 qeth_l3_dev_ipato_invert6_store);
641
642
643static ssize_t qeth_l3_dev_ipato_add6_show(struct device *dev,
644 struct device_attribute *attr, char *buf)
645{
646 struct qeth_card *card = dev_get_drvdata(dev);
647
648 if (!card)
649 return -EINVAL;
650
651 return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV6);
652}
653
654static ssize_t qeth_l3_dev_ipato_add6_store(struct device *dev,
655 struct device_attribute *attr, const char *buf, size_t count)
656{
657 struct qeth_card *card = dev_get_drvdata(dev);
658
659 if (!card)
660 return -EINVAL;
661
662 return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV6);
663}
664
665static QETH_DEVICE_ATTR(ipato_add6, add6, 0644,
666 qeth_l3_dev_ipato_add6_show,
667 qeth_l3_dev_ipato_add6_store);
668
669static ssize_t qeth_l3_dev_ipato_del6_store(struct device *dev,
670 struct device_attribute *attr, const char *buf, size_t count)
671{
672 struct qeth_card *card = dev_get_drvdata(dev);
673
674 if (!card)
675 return -EINVAL;
676
677 return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV6);
678}
679
680static QETH_DEVICE_ATTR(ipato_del6, del6, 0200, NULL,
681 qeth_l3_dev_ipato_del6_store);
682
683static struct attribute *qeth_ipato_device_attrs[] = {
684 &dev_attr_ipato_enable.attr,
685 &dev_attr_ipato_invert4.attr,
686 &dev_attr_ipato_add4.attr,
687 &dev_attr_ipato_del4.attr,
688 &dev_attr_ipato_invert6.attr,
689 &dev_attr_ipato_add6.attr,
690 &dev_attr_ipato_del6.attr,
691 NULL,
692};
693
694static struct attribute_group qeth_device_ipato_group = {
695 .name = "ipa_takeover",
696 .attrs = qeth_ipato_device_attrs,
697};
698
699static ssize_t qeth_l3_dev_vipa_add_show(char *buf, struct qeth_card *card,
700 enum qeth_prot_versions proto)
701{
702 struct qeth_ipaddr *ipaddr;
703 char addr_str[40];
704 int entry_len; /* length of 1 entry string, differs between v4 and v6 */
705 unsigned long flags;
706 int i = 0;
707
708 entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
709 entry_len += 2; /* \n + terminator */
710 spin_lock_irqsave(&card->ip_lock, flags);
711 list_for_each_entry(ipaddr, &card->ip_list, entry) {
712 if (ipaddr->proto != proto)
713 continue;
714 if (ipaddr->type != QETH_IP_TYPE_VIPA)
715 continue;
716 /* String must not be longer than PAGE_SIZE. So we check if
717 * string length gets near PAGE_SIZE. Then we can savely display
718 * the next IPv6 address (worst case, compared to IPv4) */
719 if ((PAGE_SIZE - i) <= entry_len)
720 break;
721 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
722 addr_str);
723 i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
724 }
725 spin_unlock_irqrestore(&card->ip_lock, flags);
726 i += snprintf(buf + i, PAGE_SIZE - i, "\n");
727
728 return i;
729}
730
731static ssize_t qeth_l3_dev_vipa_add4_show(struct device *dev,
732 struct device_attribute *attr, char *buf)
733{
734 struct qeth_card *card = dev_get_drvdata(dev);
735
736 if (!card)
737 return -EINVAL;
738
739 return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV4);
740}
741
742static int qeth_l3_parse_vipae(const char *buf, enum qeth_prot_versions proto,
743 u8 *addr)
744{
745 if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
4a71df50
FB		 746 return -EINVAL;
747 }
748 return 0;
749}
750
751static ssize_t qeth_l3_dev_vipa_add_store(const char *buf, size_t count,
752 struct qeth_card *card, enum qeth_prot_versions proto)
753{
754 u8 addr[16] = {0, };
755 int rc;
756
c4949f07 757 mutex_lock(&card->conf_mutex);
4a71df50 758 rc = qeth_l3_parse_vipae(buf, proto, addr);
c4949f07
FB		 759 if (!rc)
760 rc = qeth_l3_add_vipa(card, proto, addr);
761 mutex_unlock(&card->conf_mutex);
762 return rc ? rc : count;
4a71df50
FB		 763}
764
765static ssize_t qeth_l3_dev_vipa_add4_store(struct device *dev,
766 struct device_attribute *attr, const char *buf, size_t count)
767{
768 struct qeth_card *card = dev_get_drvdata(dev);
769
770 if (!card)
771 return -EINVAL;
772
773 return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV4);
774}
775
776static QETH_DEVICE_ATTR(vipa_add4, add4, 0644,
777 qeth_l3_dev_vipa_add4_show,
778 qeth_l3_dev_vipa_add4_store);
779
780static ssize_t qeth_l3_dev_vipa_del_store(const char *buf, size_t count,
781 struct qeth_card *card, enum qeth_prot_versions proto)
782{
783 u8 addr[16];
784 int rc;
785
c4949f07 786 mutex_lock(&card->conf_mutex);
4a71df50 787 rc = qeth_l3_parse_vipae(buf, proto, addr);
c4949f07
FB		 788 if (!rc)
789 qeth_l3_del_vipa(card, proto, addr);
790 mutex_unlock(&card->conf_mutex);
791 return rc ? rc : count;
4a71df50
FB		 792}
793
794static ssize_t qeth_l3_dev_vipa_del4_store(struct device *dev,
795 struct device_attribute *attr, const char *buf, size_t count)
796{
797 struct qeth_card *card = dev_get_drvdata(dev);
798
799 if (!card)
800 return -EINVAL;
801
802 return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV4);
803}
804
805static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
806 qeth_l3_dev_vipa_del4_store);
807
808static ssize_t qeth_l3_dev_vipa_add6_show(struct device *dev,
809 struct device_attribute *attr, char *buf)
810{
811 struct qeth_card *card = dev_get_drvdata(dev);
812
813 if (!card)
814 return -EINVAL;
815
816 return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV6);
817}
818
819static ssize_t qeth_l3_dev_vipa_add6_store(struct device *dev,
820 struct device_attribute *attr, const char *buf, size_t count)
821{
822 struct qeth_card *card = dev_get_drvdata(dev);
823
824 if (!card)
825 return -EINVAL;
826
827 return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV6);
828}
829
830static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
831 qeth_l3_dev_vipa_add6_show,
832 qeth_l3_dev_vipa_add6_store);
833
834static ssize_t qeth_l3_dev_vipa_del6_store(struct device *dev,
835 struct device_attribute *attr, const char *buf, size_t count)
836{
837 struct qeth_card *card = dev_get_drvdata(dev);
838
839 if (!card)
840 return -EINVAL;
841
842 return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV6);
843}
844
845static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
846 qeth_l3_dev_vipa_del6_store);
847
848static struct attribute *qeth_vipa_device_attrs[] = {
849 &dev_attr_vipa_add4.attr,
850 &dev_attr_vipa_del4.attr,
851 &dev_attr_vipa_add6.attr,
852 &dev_attr_vipa_del6.attr,
853 NULL,
854};
855
856static struct attribute_group qeth_device_vipa_group = {
857 .name = "vipa",
858 .attrs = qeth_vipa_device_attrs,
859};
860
861static ssize_t qeth_l3_dev_rxip_add_show(char *buf, struct qeth_card *card,
862 enum qeth_prot_versions proto)
863{
864 struct qeth_ipaddr *ipaddr;
865 char addr_str[40];
866 int entry_len; /* length of 1 entry string, differs between v4 and v6 */
867 unsigned long flags;
868 int i = 0;
869
870 entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
871 entry_len += 2; /* \n + terminator */
872 spin_lock_irqsave(&card->ip_lock, flags);
873 list_for_each_entry(ipaddr, &card->ip_list, entry) {
874 if (ipaddr->proto != proto)
875 continue;
876 if (ipaddr->type != QETH_IP_TYPE_RXIP)
877 continue;
878 /* String must not be longer than PAGE_SIZE. So we check if
879 * string length gets near PAGE_SIZE. Then we can savely display
880 * the next IPv6 address (worst case, compared to IPv4) */
881 if ((PAGE_SIZE - i) <= entry_len)
882 break;
883 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
884 addr_str);
885 i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
886 }
887 spin_unlock_irqrestore(&card->ip_lock, flags);
888 i += snprintf(buf + i, PAGE_SIZE - i, "\n");
889
890 return i;
891}
892
893static ssize_t qeth_l3_dev_rxip_add4_show(struct device *dev,
894 struct device_attribute *attr, char *buf)
895{
896 struct qeth_card *card = dev_get_drvdata(dev);
897
898 if (!card)
899 return -EINVAL;
900
901 return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV4);
902}
903
904static int qeth_l3_parse_rxipe(const char *buf, enum qeth_prot_versions proto,
905 u8 *addr)
906{
907 if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
4a71df50
FB		 908 return -EINVAL;
909 }
910 return 0;
911}
912
913static ssize_t qeth_l3_dev_rxip_add_store(const char *buf, size_t count,
914 struct qeth_card *card, enum qeth_prot_versions proto)
915{
916 u8 addr[16] = {0, };
917 int rc;
918
c4949f07 919 mutex_lock(&card->conf_mutex);
4a71df50 920 rc = qeth_l3_parse_rxipe(buf, proto, addr);
c4949f07
FB		 921 if (!rc)
922 rc = qeth_l3_add_rxip(card, proto, addr);
923 mutex_unlock(&card->conf_mutex);
924 return rc ? rc : count;
4a71df50
FB		 925}
926
927static ssize_t qeth_l3_dev_rxip_add4_store(struct device *dev,
928 struct device_attribute *attr, const char *buf, size_t count)
929{
930 struct qeth_card *card = dev_get_drvdata(dev);
931
932 if (!card)
933 return -EINVAL;
934
935 return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV4);
936}
937
938static QETH_DEVICE_ATTR(rxip_add4, add4, 0644,
939 qeth_l3_dev_rxip_add4_show,
940 qeth_l3_dev_rxip_add4_store);
941
942static ssize_t qeth_l3_dev_rxip_del_store(const char *buf, size_t count,
943 struct qeth_card *card, enum qeth_prot_versions proto)
944{
945 u8 addr[16];
946 int rc;
947
c4949f07 948 mutex_lock(&card->conf_mutex);
4a71df50 949 rc = qeth_l3_parse_rxipe(buf, proto, addr);
c4949f07
FB		 950 if (!rc)
951 qeth_l3_del_rxip(card, proto, addr);
952 mutex_unlock(&card->conf_mutex);
953 return rc ? rc : count;
4a71df50
FB		 954}
955
956static ssize_t qeth_l3_dev_rxip_del4_store(struct device *dev,
957 struct device_attribute *attr, const char *buf, size_t count)
958{
959 struct qeth_card *card = dev_get_drvdata(dev);
960
961 if (!card)
962 return -EINVAL;
963
964 return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV4);
965}
966
967static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
968 qeth_l3_dev_rxip_del4_store);
969
970static ssize_t qeth_l3_dev_rxip_add6_show(struct device *dev,
971 struct device_attribute *attr, char *buf)
972{
973 struct qeth_card *card = dev_get_drvdata(dev);
974
975 if (!card)
976 return -EINVAL;
977
978 return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV6);
979}
980
981static ssize_t qeth_l3_dev_rxip_add6_store(struct device *dev,
982 struct device_attribute *attr, const char *buf, size_t count)
983{
984 struct qeth_card *card = dev_get_drvdata(dev);
985
986 if (!card)
987 return -EINVAL;
988
989 return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV6);
990}
991
992static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
993 qeth_l3_dev_rxip_add6_show,
994 qeth_l3_dev_rxip_add6_store);
995
996static ssize_t qeth_l3_dev_rxip_del6_store(struct device *dev,
997 struct device_attribute *attr, const char *buf, size_t count)
998{
999 struct qeth_card *card = dev_get_drvdata(dev);
1000
1001 if (!card)
1002 return -EINVAL;
1003
1004 return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV6);
1005}
1006
1007static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,
1008 qeth_l3_dev_rxip_del6_store);
1009
1010static struct attribute *qeth_rxip_device_attrs[] = {
1011 &dev_attr_rxip_add4.attr,
1012 &dev_attr_rxip_del4.attr,
1013 &dev_attr_rxip_add6.attr,
1014 &dev_attr_rxip_del6.attr,
1015 NULL,
1016};
1017
1018static struct attribute_group qeth_device_rxip_group = {
1019 .name = "rxip",
1020 .attrs = qeth_rxip_device_attrs,
1021};
1022
1023int qeth_l3_create_device_attributes(struct device *dev)
1024{
1025 int ret;
1026
1027 ret = sysfs_create_group(&dev->kobj, &qeth_l3_device_attr_group);
1028 if (ret)
1029 return ret;
1030
1031 ret = sysfs_create_group(&dev->kobj, &qeth_device_ipato_group);
1032 if (ret) {
1033 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1034 return ret;
1035 }
1036
1037 ret = sysfs_create_group(&dev->kobj, &qeth_device_vipa_group);
1038 if (ret) {
1039 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1040 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1041 return ret;
1042 }
1043
1044 ret = sysfs_create_group(&dev->kobj, &qeth_device_rxip_group);
1045 if (ret) {
1046 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1047 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1048 sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1049 return ret;
1050 }
1051 return 0;
1052}
1053
1054void qeth_l3_remove_device_attributes(struct device *dev)
1055{
1056 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1057 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1058 sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1059 sysfs_remove_group(&dev->kobj, &qeth_device_rxip_group);
1060}
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