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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec...
[linux-2.6-block.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>
5f78e29c 11#include <linux/hashtable.h>
4a71df50
FB		 12#include "qeth_l3.h"
13
14#define QETH_DEVICE_ATTR(_id, _name, _mode, _show, _store) \
15struct device_attribute dev_attr_##_id = __ATTR(_name, _mode, _show, _store)
16
4a71df50
FB		 17static ssize_t qeth_l3_dev_route_show(struct qeth_card *card,
18 struct qeth_routing_info *route, char *buf)
19{
20 switch (route->type) {
21 case PRIMARY_ROUTER:
22 return sprintf(buf, "%s\n", "primary router");
23 case SECONDARY_ROUTER:
24 return sprintf(buf, "%s\n", "secondary router");
25 case MULTICAST_ROUTER:
26 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
27 return sprintf(buf, "%s\n", "multicast router+");
28 else
29 return sprintf(buf, "%s\n", "multicast router");
30 case PRIMARY_CONNECTOR:
31 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
32 return sprintf(buf, "%s\n", "primary connector+");
33 else
34 return sprintf(buf, "%s\n", "primary connector");
35 case SECONDARY_CONNECTOR:
36 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
37 return sprintf(buf, "%s\n", "secondary connector+");
38 else
39 return sprintf(buf, "%s\n", "secondary connector");
40 default:
41 return sprintf(buf, "%s\n", "no");
42 }
43}
44
45static ssize_t qeth_l3_dev_route4_show(struct device *dev,
46 struct device_attribute *attr, char *buf)
47{
48 struct qeth_card *card = dev_get_drvdata(dev);
49
50 if (!card)
51 return -EINVAL;
52
53 return qeth_l3_dev_route_show(card, &card->options.route4, buf);
54}
55
56static ssize_t qeth_l3_dev_route_store(struct qeth_card *card,
57 struct qeth_routing_info *route, enum qeth_prot_versions prot,
58 const char *buf, size_t count)
59{
60 enum qeth_routing_types old_route_type = route->type;
c4949f07 61 int rc = 0;
4a71df50 62
c4949f07 63 mutex_lock(&card->conf_mutex);
7e846d6b 64 if (sysfs_streq(buf, "no_router")) {
4a71df50 65 route->type = NO_ROUTER;
7e846d6b 66 } else if (sysfs_streq(buf, "primary_connector")) {
4a71df50 67 route->type = PRIMARY_CONNECTOR;
7e846d6b 68 } else if (sysfs_streq(buf, "secondary_connector")) {
4a71df50 69 route->type = SECONDARY_CONNECTOR;
7e846d6b 70 } else if (sysfs_streq(buf, "primary_router")) {
4a71df50 71 route->type = PRIMARY_ROUTER;
7e846d6b 72 } else if (sysfs_streq(buf, "secondary_router")) {
4a71df50 73 route->type = SECONDARY_ROUTER;
7e846d6b 74 } else if (sysfs_streq(buf, "multicast_router")) {
4a71df50
FB		 75 route->type = MULTICAST_ROUTER;
76 } else {
c4949f07
FB		 77 rc = -EINVAL;
78 goto out;
4a71df50 79 }
c3521254 80 if (qeth_card_hw_is_reachable(card) &&
4a71df50
FB		 81 (old_route_type != route->type)) {
82 if (prot == QETH_PROT_IPV4)
83 rc = qeth_l3_setrouting_v4(card);
84 else if (prot == QETH_PROT_IPV6)
85 rc = qeth_l3_setrouting_v6(card);
86 }
c4949f07 87out:
82e2e782
SR		 88 if (rc)
89 route->type = old_route_type;
c4949f07
FB		 90 mutex_unlock(&card->conf_mutex);
91 return rc ? rc : count;
4a71df50
FB		 92}
93
94static ssize_t qeth_l3_dev_route4_store(struct device *dev,
95 struct device_attribute *attr, const char *buf, size_t count)
96{
97 struct qeth_card *card = dev_get_drvdata(dev);
98
99 if (!card)
100 return -EINVAL;
101
102 return qeth_l3_dev_route_store(card, &card->options.route4,
103 QETH_PROT_IPV4, buf, count);
104}
105
106static DEVICE_ATTR(route4, 0644, qeth_l3_dev_route4_show,
107 qeth_l3_dev_route4_store);
108
109static ssize_t qeth_l3_dev_route6_show(struct device *dev,
110 struct device_attribute *attr, char *buf)
111{
112 struct qeth_card *card = dev_get_drvdata(dev);
113
114 if (!card)
115 return -EINVAL;
116
4a71df50
FB		 117 return qeth_l3_dev_route_show(card, &card->options.route6, buf);
118}
119
120static ssize_t qeth_l3_dev_route6_store(struct device *dev,
121 struct device_attribute *attr, const char *buf, size_t count)
122{
123 struct qeth_card *card = dev_get_drvdata(dev);
124
125 if (!card)
126 return -EINVAL;
127
4a71df50
FB		 128 return qeth_l3_dev_route_store(card, &card->options.route6,
129 QETH_PROT_IPV6, buf, count);
130}
131
132static DEVICE_ATTR(route6, 0644, qeth_l3_dev_route6_show,
133 qeth_l3_dev_route6_store);
134
135static ssize_t qeth_l3_dev_fake_broadcast_show(struct device *dev,
136 struct device_attribute *attr, char *buf)
137{
138 struct qeth_card *card = dev_get_drvdata(dev);
139
140 if (!card)
141 return -EINVAL;
142
143 return sprintf(buf, "%i\n", card->options.fake_broadcast? 1:0);
144}
145
146static ssize_t qeth_l3_dev_fake_broadcast_store(struct device *dev,
147 struct device_attribute *attr, const char *buf, size_t count)
148{
149 struct qeth_card *card = dev_get_drvdata(dev);
150 char *tmp;
c4949f07 151 int i, rc = 0;
4a71df50
FB		 152
153 if (!card)
154 return -EINVAL;
155
c4949f07 156 mutex_lock(&card->conf_mutex);
4a71df50 157 if ((card->state != CARD_STATE_DOWN) &&
c4949f07
FB		 158 (card->state != CARD_STATE_RECOVER)) {
159 rc = -EPERM;
160 goto out;
161 }
4a71df50
FB		 162
163 i = simple_strtoul(buf, &tmp, 16);
164 if ((i == 0) || (i == 1))
165 card->options.fake_broadcast = i;
c4949f07
FB		 166 else
167 rc = -EINVAL;
168out:
169 mutex_unlock(&card->conf_mutex);
170 return rc ? rc : count;
4a71df50
FB		 171}
172
173static DEVICE_ATTR(fake_broadcast, 0644, qeth_l3_dev_fake_broadcast_show,
174 qeth_l3_dev_fake_broadcast_store);
175
76b11f8e
UB		 176static ssize_t qeth_l3_dev_sniffer_show(struct device *dev,
177 struct device_attribute *attr, char *buf)
178{
179 struct qeth_card *card = dev_get_drvdata(dev);
180
181 if (!card)
182 return -EINVAL;
183
184 return sprintf(buf, "%i\n", card->options.sniffer ? 1 : 0);
185}
186
187static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
188 struct device_attribute *attr, const char *buf, size_t count)
189{
190 struct qeth_card *card = dev_get_drvdata(dev);
c4949f07 191 int rc = 0;
76b11f8e
UB		 192 unsigned long i;
193
194 if (!card)
195 return -EINVAL;
196
197 if (card->info.type != QETH_CARD_TYPE_IQD)
198 return -EPERM;
b3332930
FB		 199 if (card->options.cq == QETH_CQ_ENABLED)
200 return -EPERM;
76b11f8e 201
c4949f07 202 mutex_lock(&card->conf_mutex);
76b11f8e 203 if ((card->state != CARD_STATE_DOWN) &&
c4949f07
FB		 204 (card->state != CARD_STATE_RECOVER)) {
205 rc = -EPERM;
206 goto out;
207 }
76b11f8e 208
0178722b 209 rc = kstrtoul(buf, 16, &i);
c4949f07
FB		 210 if (rc) {
211 rc = -EINVAL;
212 goto out;
213 }
76b11f8e
UB		 214 switch (i) {
215 case 0:
216 card->options.sniffer = i;
217 break;
218 case 1:
c4949f07 219 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
76b11f8e
UB		 220 if (card->ssqd.qdioac2 & QETH_SNIFF_AVAIL) {
221 card->options.sniffer = i;
222 if (card->qdio.init_pool.buf_count !=
223 QETH_IN_BUF_COUNT_MAX)
224 qeth_realloc_buffer_pool(card,
225 QETH_IN_BUF_COUNT_MAX);
76b11f8e 226 } else
c4949f07 227 rc = -EPERM;
6cc31d09
UB		 228 break;
229 default:
c4949f07 230 rc = -EINVAL;
76b11f8e 231 }
c4949f07
FB		 232out:
233 mutex_unlock(&card->conf_mutex);
234 return rc ? rc : count;
76b11f8e
UB		 235}
236
237static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
238 qeth_l3_dev_sniffer_store);
239
b3332930
FB		 240
241static ssize_t qeth_l3_dev_hsuid_show(struct device *dev,
242 struct device_attribute *attr, char *buf)
243{
244 struct qeth_card *card = dev_get_drvdata(dev);
245 char tmp_hsuid[9];
246
247 if (!card)
248 return -EINVAL;
249
250 if (card->info.type != QETH_CARD_TYPE_IQD)
251 return -EPERM;
252
b3332930
FB		 253 memcpy(tmp_hsuid, card->options.hsuid, sizeof(tmp_hsuid));
254 EBCASC(tmp_hsuid, 8);
255 return sprintf(buf, "%s\n", tmp_hsuid);
256}
257
258static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
259 struct device_attribute *attr, const char *buf, size_t count)
260{
261 struct qeth_card *card = dev_get_drvdata(dev);
262 struct qeth_ipaddr *addr;
263 char *tmp;
264 int i;
265
266 if (!card)
267 return -EINVAL;
268
269 if (card->info.type != QETH_CARD_TYPE_IQD)
270 return -EPERM;
271 if (card->state != CARD_STATE_DOWN &&
272 card->state != CARD_STATE_RECOVER)
273 return -EPERM;
274 if (card->options.sniffer)
275 return -EPERM;
276 if (card->options.cq == QETH_CQ_NOTAVAILABLE)
277 return -EPERM;
278
279 tmp = strsep((char **)&buf, "\n");
280 if (strlen(tmp) > 8)
281 return -EINVAL;
282
283 if (card->options.hsuid[0]) {
284 /* delete old ip address */
285 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
5f78e29c 286 if (!addr)
b3332930 287 return -ENOMEM;
5f78e29c
LD		 288
289 addr->u.a6.addr.s6_addr32[0] = 0xfe800000;
290 addr->u.a6.addr.s6_addr32[1] = 0x00000000;
291 for (i = 8; i < 16; i++)
292 addr->u.a6.addr.s6_addr[i] =
293 card->options.hsuid[i - 8];
294 addr->u.a6.pfxlen = 0;
295 addr->type = QETH_IP_TYPE_NORMAL;
296
016930b8 297 spin_lock_bh(&card->ip_lock);
5f78e29c 298 qeth_l3_delete_ip(card, addr);
016930b8 299 spin_unlock_bh(&card->ip_lock);
5f78e29c 300 kfree(addr);
b3332930
FB		 301 }
302
303 if (strlen(tmp) == 0) {
304 /* delete ip address only */
305 card->options.hsuid[0] = '\0';
306 if (card->dev)
307 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
308 qeth_configure_cq(card, QETH_CQ_DISABLED);
309 return count;
310 }
311
312 if (qeth_configure_cq(card, QETH_CQ_ENABLED))
313 return -EPERM;
314
096a8aac
KC		 315 snprintf(card->options.hsuid, sizeof(card->options.hsuid),
316 "%-8s", tmp);
b3332930
FB		 317 ASCEBC(card->options.hsuid, 8);
318 if (card->dev)
319 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
320
321 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
322 if (addr != NULL) {
323 addr->u.a6.addr.s6_addr32[0] = 0xfe800000;
324 addr->u.a6.addr.s6_addr32[1] = 0x00000000;
325 for (i = 8; i < 16; i++)
326 addr->u.a6.addr.s6_addr[i] = card->options.hsuid[i - 8];
327 addr->u.a6.pfxlen = 0;
328 addr->type = QETH_IP_TYPE_NORMAL;
329 } else
330 return -ENOMEM;
016930b8
UB		 331
332 spin_lock_bh(&card->ip_lock);
5f78e29c 333 qeth_l3_add_ip(card, addr);
016930b8 334 spin_unlock_bh(&card->ip_lock);
5f78e29c 335 kfree(addr);
b3332930
FB		 336
337 return count;
338}
339
340static DEVICE_ATTR(hsuid, 0644, qeth_l3_dev_hsuid_show,
341 qeth_l3_dev_hsuid_store);
342
343
4a71df50
FB		 344static struct attribute *qeth_l3_device_attrs[] = {
345 &dev_attr_route4.attr,
346 &dev_attr_route6.attr,
347 &dev_attr_fake_broadcast.attr,
76b11f8e 348 &dev_attr_sniffer.attr,
b3332930 349 &dev_attr_hsuid.attr,
4a71df50
FB		 350 NULL,
351};
352
353static struct attribute_group qeth_l3_device_attr_group = {
354 .attrs = qeth_l3_device_attrs,
355};
356
357static ssize_t qeth_l3_dev_ipato_enable_show(struct device *dev,
358 struct device_attribute *attr, char *buf)
359{
360 struct qeth_card *card = dev_get_drvdata(dev);
361
362 if (!card)
363 return -EINVAL;
364
365 return sprintf(buf, "%i\n", card->ipato.enabled? 1:0);
366}
367
368static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev,
369 struct device_attribute *attr, const char *buf, size_t count)
370{
371 struct qeth_card *card = dev_get_drvdata(dev);
5f78e29c
LD		 372 struct qeth_ipaddr *addr;
373 int i, rc = 0;
4a71df50
FB		 374
375 if (!card)
376 return -EINVAL;
377
c4949f07 378 mutex_lock(&card->conf_mutex);
4a71df50 379 if ((card->state != CARD_STATE_DOWN) &&
c4949f07
FB		 380 (card->state != CARD_STATE_RECOVER)) {
381 rc = -EPERM;
382 goto out;
383 }
4a71df50 384
7e846d6b 385 if (sysfs_streq(buf, "toggle")) {
4a71df50 386 card->ipato.enabled = (card->ipato.enabled)? 0 : 1;
7e846d6b 387 } else if (sysfs_streq(buf, "1")) {
4a71df50 388 card->ipato.enabled = 1;
5f78e29c
LD		 389 hash_for_each(card->ip_htable, i, addr, hnode) {
390 if ((addr->type == QETH_IP_TYPE_NORMAL) &&
391 qeth_l3_is_addr_covered_by_ipato(card, addr))
392 addr->set_flags |=
6298263a 393 QETH_IPA_SETIP_TAKEOVER_FLAG;
5f78e29c 394 }
7e846d6b 395 } else if (sysfs_streq(buf, "0")) {
4a71df50 396 card->ipato.enabled = 0;
5f78e29c
LD		 397 hash_for_each(card->ip_htable, i, addr, hnode) {
398 if (addr->set_flags &
399 QETH_IPA_SETIP_TAKEOVER_FLAG)
400 addr->set_flags &=
401 ~QETH_IPA_SETIP_TAKEOVER_FLAG;
402 }
c4949f07
FB		 403 } else
404 rc = -EINVAL;
405out:
406 mutex_unlock(&card->conf_mutex);
407 return rc ? rc : count;
4a71df50
FB		 408}
409
410static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
411 qeth_l3_dev_ipato_enable_show,
412 qeth_l3_dev_ipato_enable_store);
413
414static ssize_t qeth_l3_dev_ipato_invert4_show(struct device *dev,
415 struct device_attribute *attr, char *buf)
416{
417 struct qeth_card *card = dev_get_drvdata(dev);
418
419 if (!card)
420 return -EINVAL;
421
422 return sprintf(buf, "%i\n", card->ipato.invert4? 1:0);
423}
424
425static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev,
426 struct device_attribute *attr,
427 const char *buf, size_t count)
428{
429 struct qeth_card *card = dev_get_drvdata(dev);
c4949f07 430 int rc = 0;
4a71df50
FB		 431
432 if (!card)
433 return -EINVAL;
434
c4949f07 435 mutex_lock(&card->conf_mutex);
7e846d6b 436 if (sysfs_streq(buf, "toggle"))
4a71df50 437 card->ipato.invert4 = (card->ipato.invert4)? 0 : 1;
7e846d6b 438 else if (sysfs_streq(buf, "1"))
4a71df50 439 card->ipato.invert4 = 1;
7e846d6b 440 else if (sysfs_streq(buf, "0"))
4a71df50 441 card->ipato.invert4 = 0;
7e846d6b 442 else
c4949f07
FB		 443 rc = -EINVAL;
444 mutex_unlock(&card->conf_mutex);
445 return rc ? rc : count;
4a71df50
FB		 446}
447
448static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
449 qeth_l3_dev_ipato_invert4_show,
450 qeth_l3_dev_ipato_invert4_store);
451
452static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
453 enum qeth_prot_versions proto)
454{
455 struct qeth_ipato_entry *ipatoe;
4a71df50
FB		 456 char addr_str[40];
457 int entry_len; /* length of 1 entry string, differs between v4 and v6 */
458 int i = 0;
459
460 entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
461 /* add strlen for "/<mask>\n" */
462 entry_len += (proto == QETH_PROT_IPV4)? 5 : 6;
5f78e29c 463 spin_lock_bh(&card->ip_lock);
4a71df50
FB		 464 list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
465 if (ipatoe->proto != proto)
466 continue;
467 /* String must not be longer than PAGE_SIZE. So we check if
468 * string length gets near PAGE_SIZE. Then we can savely display
469 * the next IPv6 address (worst case, compared to IPv4) */
470 if ((PAGE_SIZE - i) <= entry_len)
471 break;
472 qeth_l3_ipaddr_to_string(proto, ipatoe->addr, addr_str);
473 i += snprintf(buf + i, PAGE_SIZE - i,
474 "%s/%i\n", addr_str, ipatoe->mask_bits);
475 }
5f78e29c 476 spin_unlock_bh(&card->ip_lock);
4a71df50
FB		 477 i += snprintf(buf + i, PAGE_SIZE - i, "\n");
478
479 return i;
480}
481
482static ssize_t qeth_l3_dev_ipato_add4_show(struct device *dev,
483 struct device_attribute *attr, char *buf)
484{
485 struct qeth_card *card = dev_get_drvdata(dev);
486
487 if (!card)
488 return -EINVAL;
489
490 return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV4);
491}
492
493static int qeth_l3_parse_ipatoe(const char *buf, enum qeth_prot_versions proto,
494 u8 *addr, int *mask_bits)
495{
496 const char *start, *end;
497 char *tmp;
498 char buffer[40] = {0, };
499
500 start = buf;
501 /* get address string */
502 end = strchr(start, '/');
503 if (!end || (end - start >= 40)) {
4a71df50
FB		 504 return -EINVAL;
505 }
506 strncpy(buffer, start, end - start);
507 if (qeth_l3_string_to_ipaddr(buffer, proto, addr)) {
4a71df50
FB		 508 return -EINVAL;
509 }
510 start = end + 1;
511 *mask_bits = simple_strtoul(start, &tmp, 10);
512 if (!strlen(start) ||
513 (tmp == start) ||
514 (*mask_bits > ((proto == QETH_PROT_IPV4) ? 32 : 128))) {
4a71df50
FB		 515 return -EINVAL;
516 }
517 return 0;
518}
519
520static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
521 struct qeth_card *card, enum qeth_prot_versions proto)
522{
523 struct qeth_ipato_entry *ipatoe;
524 u8 addr[16];
525 int mask_bits;
c4949f07 526 int rc = 0;
4a71df50 527
c4949f07 528 mutex_lock(&card->conf_mutex);
4a71df50
FB		 529 rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
530 if (rc)
c4949f07 531 goto out;
4a71df50
FB		 532
533 ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
534 if (!ipatoe) {
c4949f07
FB		 535 rc = -ENOMEM;
536 goto out;
4a71df50
FB		 537 }
538 ipatoe->proto = proto;
539 memcpy(ipatoe->addr, addr, (proto == QETH_PROT_IPV4)? 4:16);
540 ipatoe->mask_bits = mask_bits;
541
542 rc = qeth_l3_add_ipato_entry(card, ipatoe);
c4949f07 543 if (rc)
4a71df50 544 kfree(ipatoe);
c4949f07
FB		 545out:
546 mutex_unlock(&card->conf_mutex);
547 return rc ? rc : count;
4a71df50
FB		 548}
549
550static ssize_t qeth_l3_dev_ipato_add4_store(struct device *dev,
551 struct device_attribute *attr, const char *buf, size_t count)
552{
553 struct qeth_card *card = dev_get_drvdata(dev);
554
555 if (!card)
556 return -EINVAL;
557
558 return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV4);
559}
560
561static QETH_DEVICE_ATTR(ipato_add4, add4, 0644,
562 qeth_l3_dev_ipato_add4_show,
563 qeth_l3_dev_ipato_add4_store);
564
565static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
566 struct qeth_card *card, enum qeth_prot_versions proto)
567{
568 u8 addr[16];
569 int mask_bits;
c4949f07 570 int rc = 0;
4a71df50 571
c4949f07 572 mutex_lock(&card->conf_mutex);
4a71df50 573 rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
c4949f07
FB		 574 if (!rc)
575 qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
576 mutex_unlock(&card->conf_mutex);
577 return rc ? rc : count;
4a71df50
FB		 578}
579
580static ssize_t qeth_l3_dev_ipato_del4_store(struct device *dev,
581 struct device_attribute *attr, const char *buf, size_t count)
582{
583 struct qeth_card *card = dev_get_drvdata(dev);
584
585 if (!card)
586 return -EINVAL;
587
588 return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV4);
589}
590
591static QETH_DEVICE_ATTR(ipato_del4, del4, 0200, NULL,
592 qeth_l3_dev_ipato_del4_store);
593
594static ssize_t qeth_l3_dev_ipato_invert6_show(struct device *dev,
595 struct device_attribute *attr, char *buf)
596{
597 struct qeth_card *card = dev_get_drvdata(dev);
598
599 if (!card)
600 return -EINVAL;
601
602 return sprintf(buf, "%i\n", card->ipato.invert6? 1:0);
603}
604
605static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev,
606 struct device_attribute *attr, const char *buf, size_t count)
607{
608 struct qeth_card *card = dev_get_drvdata(dev);
c4949f07 609 int rc = 0;
4a71df50
FB		 610
611 if (!card)
612 return -EINVAL;
613
c4949f07 614 mutex_lock(&card->conf_mutex);
7e846d6b 615 if (sysfs_streq(buf, "toggle"))
4a71df50 616 card->ipato.invert6 = (card->ipato.invert6)? 0 : 1;
7e846d6b 617 else if (sysfs_streq(buf, "1"))
4a71df50 618 card->ipato.invert6 = 1;
7e846d6b 619 else if (sysfs_streq(buf, "0"))
4a71df50 620 card->ipato.invert6 = 0;
7e846d6b 621 else
c4949f07
FB		 622 rc = -EINVAL;
623 mutex_unlock(&card->conf_mutex);
624 return rc ? rc : count;
4a71df50
FB		 625}
626
627static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
628 qeth_l3_dev_ipato_invert6_show,
629 qeth_l3_dev_ipato_invert6_store);
630
631
632static ssize_t qeth_l3_dev_ipato_add6_show(struct device *dev,
633 struct device_attribute *attr, char *buf)
634{
635 struct qeth_card *card = dev_get_drvdata(dev);
636
637 if (!card)
638 return -EINVAL;
639
640 return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV6);
641}
642
643static ssize_t qeth_l3_dev_ipato_add6_store(struct device *dev,
644 struct device_attribute *attr, const char *buf, size_t count)
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_store(buf, count, card, QETH_PROT_IPV6);
652}
653
654static QETH_DEVICE_ATTR(ipato_add6, add6, 0644,
655 qeth_l3_dev_ipato_add6_show,
656 qeth_l3_dev_ipato_add6_store);
657
658static ssize_t qeth_l3_dev_ipato_del6_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_del_store(buf, count, card, QETH_PROT_IPV6);
667}
668
669static QETH_DEVICE_ATTR(ipato_del6, del6, 0200, NULL,
670 qeth_l3_dev_ipato_del6_store);
671
672static struct attribute *qeth_ipato_device_attrs[] = {
673 &dev_attr_ipato_enable.attr,
674 &dev_attr_ipato_invert4.attr,
675 &dev_attr_ipato_add4.attr,
676 &dev_attr_ipato_del4.attr,
677 &dev_attr_ipato_invert6.attr,
678 &dev_attr_ipato_add6.attr,
679 &dev_attr_ipato_del6.attr,
680 NULL,
681};
682
683static struct attribute_group qeth_device_ipato_group = {
684 .name = "ipa_takeover",
685 .attrs = qeth_ipato_device_attrs,
686};
687
688static ssize_t qeth_l3_dev_vipa_add_show(char *buf, struct qeth_card *card,
689 enum qeth_prot_versions proto)
690{
691 struct qeth_ipaddr *ipaddr;
692 char addr_str[40];
e48b9eaa 693 int str_len = 0;
4a71df50 694 int entry_len; /* length of 1 entry string, differs between v4 and v6 */
e48b9eaa 695 int i;
4a71df50
FB		 696
697 entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
698 entry_len += 2; /* \n + terminator */
5f78e29c 699 spin_lock_bh(&card->ip_lock);
e48b9eaa 700 hash_for_each(card->ip_htable, i, ipaddr, hnode) {
4a71df50
FB		 701 if (ipaddr->proto != proto)
702 continue;
703 if (ipaddr->type != QETH_IP_TYPE_VIPA)
704 continue;
705 /* String must not be longer than PAGE_SIZE. So we check if
706 * string length gets near PAGE_SIZE. Then we can savely display
707 * the next IPv6 address (worst case, compared to IPv4) */
e48b9eaa 708 if ((PAGE_SIZE - str_len) <= entry_len)
4a71df50
FB		 709 break;
710 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
711 addr_str);
e48b9eaa
UB		 712 str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "%s\n",
713 addr_str);
4a71df50 714 }
5f78e29c 715 spin_unlock_bh(&card->ip_lock);
e48b9eaa 716 str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "\n");
4a71df50 717
e48b9eaa 718 return str_len;
4a71df50
FB		 719}
720
721static ssize_t qeth_l3_dev_vipa_add4_show(struct device *dev,
722 struct device_attribute *attr, char *buf)
723{
724 struct qeth_card *card = dev_get_drvdata(dev);
725
726 if (!card)
727 return -EINVAL;
728
729 return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV4);
730}
731
732static int qeth_l3_parse_vipae(const char *buf, enum qeth_prot_versions proto,
733 u8 *addr)
734{
735 if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
4a71df50
FB		 736 return -EINVAL;
737 }
738 return 0;
739}
740
741static ssize_t qeth_l3_dev_vipa_add_store(const char *buf, size_t count,
742 struct qeth_card *card, enum qeth_prot_versions proto)
743{
744 u8 addr[16] = {0, };
745 int rc;
746
c4949f07 747 mutex_lock(&card->conf_mutex);
4a71df50 748 rc = qeth_l3_parse_vipae(buf, proto, addr);
c4949f07
FB		 749 if (!rc)
750 rc = qeth_l3_add_vipa(card, proto, addr);
751 mutex_unlock(&card->conf_mutex);
752 return rc ? rc : count;
4a71df50
FB		 753}
754
755static ssize_t qeth_l3_dev_vipa_add4_store(struct device *dev,
756 struct device_attribute *attr, const char *buf, size_t count)
757{
758 struct qeth_card *card = dev_get_drvdata(dev);
759
760 if (!card)
761 return -EINVAL;
762
763 return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV4);
764}
765
766static QETH_DEVICE_ATTR(vipa_add4, add4, 0644,
767 qeth_l3_dev_vipa_add4_show,
768 qeth_l3_dev_vipa_add4_store);
769
770static ssize_t qeth_l3_dev_vipa_del_store(const char *buf, size_t count,
771 struct qeth_card *card, enum qeth_prot_versions proto)
772{
773 u8 addr[16];
774 int rc;
775
c4949f07 776 mutex_lock(&card->conf_mutex);
4a71df50 777 rc = qeth_l3_parse_vipae(buf, proto, addr);
c4949f07
FB		 778 if (!rc)
779 qeth_l3_del_vipa(card, proto, addr);
780 mutex_unlock(&card->conf_mutex);
781 return rc ? rc : count;
4a71df50
FB		 782}
783
784static ssize_t qeth_l3_dev_vipa_del4_store(struct device *dev,
785 struct device_attribute *attr, const char *buf, size_t count)
786{
787 struct qeth_card *card = dev_get_drvdata(dev);
788
789 if (!card)
790 return -EINVAL;
791
792 return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV4);
793}
794
795static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
796 qeth_l3_dev_vipa_del4_store);
797
798static ssize_t qeth_l3_dev_vipa_add6_show(struct device *dev,
799 struct device_attribute *attr, char *buf)
800{
801 struct qeth_card *card = dev_get_drvdata(dev);
802
803 if (!card)
804 return -EINVAL;
805
806 return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV6);
807}
808
809static ssize_t qeth_l3_dev_vipa_add6_store(struct device *dev,
810 struct device_attribute *attr, const char *buf, size_t count)
811{
812 struct qeth_card *card = dev_get_drvdata(dev);
813
814 if (!card)
815 return -EINVAL;
816
817 return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV6);
818}
819
820static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
821 qeth_l3_dev_vipa_add6_show,
822 qeth_l3_dev_vipa_add6_store);
823
824static ssize_t qeth_l3_dev_vipa_del6_store(struct device *dev,
825 struct device_attribute *attr, const char *buf, size_t count)
826{
827 struct qeth_card *card = dev_get_drvdata(dev);
828
829 if (!card)
830 return -EINVAL;
831
832 return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV6);
833}
834
835static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
836 qeth_l3_dev_vipa_del6_store);
837
838static struct attribute *qeth_vipa_device_attrs[] = {
839 &dev_attr_vipa_add4.attr,
840 &dev_attr_vipa_del4.attr,
841 &dev_attr_vipa_add6.attr,
842 &dev_attr_vipa_del6.attr,
843 NULL,
844};
845
846static struct attribute_group qeth_device_vipa_group = {
847 .name = "vipa",
848 .attrs = qeth_vipa_device_attrs,
849};
850
851static ssize_t qeth_l3_dev_rxip_add_show(char *buf, struct qeth_card *card,
852 enum qeth_prot_versions proto)
853{
854 struct qeth_ipaddr *ipaddr;
855 char addr_str[40];
e48b9eaa 856 int str_len = 0;
4a71df50 857 int entry_len; /* length of 1 entry string, differs between v4 and v6 */
e48b9eaa 858 int i;
4a71df50
FB		 859
860 entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
861 entry_len += 2; /* \n + terminator */
5f78e29c 862 spin_lock_bh(&card->ip_lock);
e48b9eaa 863 hash_for_each(card->ip_htable, i, ipaddr, hnode) {
4a71df50
FB		 864 if (ipaddr->proto != proto)
865 continue;
866 if (ipaddr->type != QETH_IP_TYPE_RXIP)
867 continue;
868 /* String must not be longer than PAGE_SIZE. So we check if
869 * string length gets near PAGE_SIZE. Then we can savely display
870 * the next IPv6 address (worst case, compared to IPv4) */
e48b9eaa 871 if ((PAGE_SIZE - str_len) <= entry_len)
4a71df50
FB		 872 break;
873 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
874 addr_str);
e48b9eaa
UB		 875 str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "%s\n",
876 addr_str);
4a71df50 877 }
5f78e29c 878 spin_unlock_bh(&card->ip_lock);
e48b9eaa 879 str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "\n");
4a71df50 880
e48b9eaa 881 return str_len;
4a71df50
FB		 882}
883
884static ssize_t qeth_l3_dev_rxip_add4_show(struct device *dev,
885 struct device_attribute *attr, char *buf)
886{
887 struct qeth_card *card = dev_get_drvdata(dev);
888
889 if (!card)
890 return -EINVAL;
891
892 return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV4);
893}
894
895static int qeth_l3_parse_rxipe(const char *buf, enum qeth_prot_versions proto,
896 u8 *addr)
897{
898 if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
4a71df50
FB		 899 return -EINVAL;
900 }
901 return 0;
902}
903
904static ssize_t qeth_l3_dev_rxip_add_store(const char *buf, size_t count,
905 struct qeth_card *card, enum qeth_prot_versions proto)
906{
907 u8 addr[16] = {0, };
908 int rc;
909
c4949f07 910 mutex_lock(&card->conf_mutex);
4a71df50 911 rc = qeth_l3_parse_rxipe(buf, proto, addr);
c4949f07
FB		 912 if (!rc)
913 rc = qeth_l3_add_rxip(card, proto, addr);
914 mutex_unlock(&card->conf_mutex);
915 return rc ? rc : count;
4a71df50
FB		 916}
917
918static ssize_t qeth_l3_dev_rxip_add4_store(struct device *dev,
919 struct device_attribute *attr, const char *buf, size_t count)
920{
921 struct qeth_card *card = dev_get_drvdata(dev);
922
923 if (!card)
924 return -EINVAL;
925
926 return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV4);
927}
928
929static QETH_DEVICE_ATTR(rxip_add4, add4, 0644,
930 qeth_l3_dev_rxip_add4_show,
931 qeth_l3_dev_rxip_add4_store);
932
933static ssize_t qeth_l3_dev_rxip_del_store(const char *buf, size_t count,
934 struct qeth_card *card, enum qeth_prot_versions proto)
935{
936 u8 addr[16];
937 int rc;
938
c4949f07 939 mutex_lock(&card->conf_mutex);
4a71df50 940 rc = qeth_l3_parse_rxipe(buf, proto, addr);
c4949f07
FB		 941 if (!rc)
942 qeth_l3_del_rxip(card, proto, addr);
943 mutex_unlock(&card->conf_mutex);
944 return rc ? rc : count;
4a71df50
FB		 945}
946
947static ssize_t qeth_l3_dev_rxip_del4_store(struct device *dev,
948 struct device_attribute *attr, const char *buf, size_t count)
949{
950 struct qeth_card *card = dev_get_drvdata(dev);
951
952 if (!card)
953 return -EINVAL;
954
955 return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV4);
956}
957
958static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
959 qeth_l3_dev_rxip_del4_store);
960
961static ssize_t qeth_l3_dev_rxip_add6_show(struct device *dev,
962 struct device_attribute *attr, char *buf)
963{
964 struct qeth_card *card = dev_get_drvdata(dev);
965
966 if (!card)
967 return -EINVAL;
968
969 return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV6);
970}
971
972static ssize_t qeth_l3_dev_rxip_add6_store(struct device *dev,
973 struct device_attribute *attr, const char *buf, size_t count)
974{
975 struct qeth_card *card = dev_get_drvdata(dev);
976
977 if (!card)
978 return -EINVAL;
979
980 return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV6);
981}
982
983static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
984 qeth_l3_dev_rxip_add6_show,
985 qeth_l3_dev_rxip_add6_store);
986
987static ssize_t qeth_l3_dev_rxip_del6_store(struct device *dev,
988 struct device_attribute *attr, const char *buf, size_t count)
989{
990 struct qeth_card *card = dev_get_drvdata(dev);
991
992 if (!card)
993 return -EINVAL;
994
995 return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV6);
996}
997
998static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,
999 qeth_l3_dev_rxip_del6_store);
1000
1001static struct attribute *qeth_rxip_device_attrs[] = {
1002 &dev_attr_rxip_add4.attr,
1003 &dev_attr_rxip_del4.attr,
1004 &dev_attr_rxip_add6.attr,
1005 &dev_attr_rxip_del6.attr,
1006 NULL,
1007};
1008
1009static struct attribute_group qeth_device_rxip_group = {
1010 .name = "rxip",
1011 .attrs = qeth_rxip_device_attrs,
1012};
1013
1014int qeth_l3_create_device_attributes(struct device *dev)
1015{
1016 int ret;
1017
1018 ret = sysfs_create_group(&dev->kobj, &qeth_l3_device_attr_group);
1019 if (ret)
1020 return ret;
1021
1022 ret = sysfs_create_group(&dev->kobj, &qeth_device_ipato_group);
1023 if (ret) {
1024 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1025 return ret;
1026 }
1027
1028 ret = sysfs_create_group(&dev->kobj, &qeth_device_vipa_group);
1029 if (ret) {
1030 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1031 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1032 return ret;
1033 }
1034
1035 ret = sysfs_create_group(&dev->kobj, &qeth_device_rxip_group);
1036 if (ret) {
1037 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1038 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1039 sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1040 return ret;
1041 }
1042 return 0;
1043}
1044
1045void qeth_l3_remove_device_attributes(struct device *dev)
1046{
1047 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1048 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1049 sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1050 sysfs_remove_group(&dev->kobj, &qeth_device_rxip_group);
1051}
Linux 6.x block layer and io_uring tree(s)