drivers/s390/net/qeth_l3_sys.c

   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) \
  17 struct device_attribute dev_attr_##_id = __ATTR(_name, _mode, _show, _store)
  18
  19 static 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
  30 static 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
  58 static 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
  66 static 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         }
  97 out:
  98         if (rc)
  99                 route->type = old_route_type;
 100         mutex_unlock(&card->conf_mutex);
 101         return rc ? rc : count;
 102 }
 103
 104 static 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
 113 static DEVICE_ATTR(route4, 0644, qeth_l3_dev_route4_show,
 114                         qeth_l3_dev_route4_store);
 115
 116 static 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
 124 static 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
 133 static DEVICE_ATTR(route6, 0644, qeth_l3_dev_route6_show,
 134                         qeth_l3_dev_route6_store);
 135
 136 static ssize_t qeth_l3_dev_fake_broadcast_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.fake_broadcast? 1:0);
 142 }
 143
 144 static ssize_t qeth_l3_dev_fake_broadcast_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         char *tmp;
 149         int i, rc = 0;
 150
 151         mutex_lock(&card->conf_mutex);
 152         if (card->state != CARD_STATE_DOWN) {
 153                 rc = -EPERM;
 154                 goto out;
 155         }
 156
 157         i = simple_strtoul(buf, &tmp, 16);
 158         if ((i == 0) || (i == 1))
 159                 card->options.fake_broadcast = i;
 160         else
 161                 rc = -EINVAL;
 162 out:
 163         mutex_unlock(&card->conf_mutex);
 164         return rc ? rc : count;
 165 }
 166
 167 static DEVICE_ATTR(fake_broadcast, 0644, qeth_l3_dev_fake_broadcast_show,
 168                    qeth_l3_dev_fake_broadcast_store);
 169
 170 static ssize_t qeth_l3_dev_sniffer_show(struct device *dev,
 171                 struct device_attribute *attr, char *buf)
 172 {
 173         struct qeth_card *card = dev_get_drvdata(dev);
 174
 175         return sprintf(buf, "%i\n", card->options.sniffer ? 1 : 0);
 176 }
 177
 178 static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
 179                 struct device_attribute *attr, const char *buf, size_t count)
 180 {
 181         struct qeth_card *card = dev_get_drvdata(dev);
 182         int rc = 0;
 183         unsigned long i;
 184
 185         if (!IS_IQD(card))
 186                 return -EPERM;
 187         if (card->options.cq == QETH_CQ_ENABLED)
 188                 return -EPERM;
 189
 190         mutex_lock(&card->conf_mutex);
 191         if (card->state != CARD_STATE_DOWN) {
 192                 rc = -EPERM;
 193                 goto out;
 194         }
 195
 196         rc = kstrtoul(buf, 16, &i);
 197         if (rc) {
 198                 rc = -EINVAL;
 199                 goto out;
 200         }
 201         switch (i) {
 202         case 0:
 203                 card->options.sniffer = i;
 204                 break;
 205         case 1:
 206                 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
 207                 if (card->ssqd.qdioac2 & CHSC_AC2_SNIFFER_AVAILABLE) {
 208                         card->options.sniffer = i;
 209                         if (card->qdio.init_pool.buf_count !=
 210                                         QETH_IN_BUF_COUNT_MAX)
 211                                 qeth_realloc_buffer_pool(card,
 212                                         QETH_IN_BUF_COUNT_MAX);
 213                 } else
 214                         rc = -EPERM;
 215                 break;
 216         default:
 217                 rc = -EINVAL;
 218         }
 219 out:
 220         mutex_unlock(&card->conf_mutex);
 221         return rc ? rc : count;
 222 }
 223
 224 static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
 225                 qeth_l3_dev_sniffer_store);
 226
 227 static ssize_t qeth_l3_dev_hsuid_show(struct device *dev,
 228                 struct device_attribute *attr, char *buf)
 229 {
 230         struct qeth_card *card = dev_get_drvdata(dev);
 231         char tmp_hsuid[9];
 232
 233         if (!IS_IQD(card))
 234                 return -EPERM;
 235
 236         memcpy(tmp_hsuid, card->options.hsuid, sizeof(tmp_hsuid));
 237         EBCASC(tmp_hsuid, 8);
 238         return sprintf(buf, "%s\n", tmp_hsuid);
 239 }
 240
 241 static ssize_t qeth_l3_dev_hsuid_store(struct device *dev,
 242                 struct device_attribute *attr, const char *buf, size_t count)
 243 {
 244         struct qeth_card *card = dev_get_drvdata(dev);
 245         char *tmp;
 246         int rc;
 247
 248         if (!IS_IQD(card))
 249                 return -EPERM;
 250         if (card->state != CARD_STATE_DOWN)
 251                 return -EPERM;
 252         if (card->options.sniffer)
 253                 return -EPERM;
 254         if (card->options.cq == QETH_CQ_NOTAVAILABLE)
 255                 return -EPERM;
 256
 257         tmp = strsep((char **)&buf, "\n");
 258         if (strlen(tmp) > 8)
 259                 return -EINVAL;
 260
 261         if (card->options.hsuid[0])
 262                 /* delete old ip address */
 263                 qeth_l3_modify_hsuid(card, false);
 264
 265         if (strlen(tmp) == 0) {
 266                 /* delete ip address only */
 267                 card->options.hsuid[0] = '\0';
 268                 memcpy(card->dev->perm_addr, card->options.hsuid, 9);
 269                 qeth_configure_cq(card, QETH_CQ_DISABLED);
 270                 return count;
 271         }
 272
 273         if (qeth_configure_cq(card, QETH_CQ_ENABLED))
 274                 return -EPERM;
 275
 276         snprintf(card->options.hsuid, sizeof(card->options.hsuid),
 277                  "%-8s", tmp);
 278         ASCEBC(card->options.hsuid, 8);
 279         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
 280
 281         rc = qeth_l3_modify_hsuid(card, true);
 282
 283         return rc ? rc : count;
 284 }
 285
 286 static DEVICE_ATTR(hsuid, 0644, qeth_l3_dev_hsuid_show,
 287                    qeth_l3_dev_hsuid_store);
 288
 289
 290 static struct attribute *qeth_l3_device_attrs[] = {
 291         &dev_attr_route4.attr,
 292         &dev_attr_route6.attr,
 293         &dev_attr_fake_broadcast.attr,
 294         &dev_attr_sniffer.attr,
 295         &dev_attr_hsuid.attr,
 296         NULL,
 297 };
 298
 299 static const struct attribute_group qeth_l3_device_attr_group = {
 300         .attrs = qeth_l3_device_attrs,
 301 };
 302
 303 static ssize_t qeth_l3_dev_ipato_enable_show(struct device *dev,
 304                         struct device_attribute *attr, char *buf)
 305 {
 306         struct qeth_card *card = dev_get_drvdata(dev);
 307
 308         return sprintf(buf, "%i\n", card->ipato.enabled? 1:0);
 309 }
 310
 311 static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev,
 312                 struct device_attribute *attr, const char *buf, size_t count)
 313 {
 314         struct qeth_card *card = dev_get_drvdata(dev);
 315         bool enable;
 316         int rc = 0;
 317
 318         mutex_lock(&card->conf_mutex);
 319         if (card->state != CARD_STATE_DOWN) {
 320                 rc = -EPERM;
 321                 goto out;
 322         }
 323
 324         if (sysfs_streq(buf, "toggle")) {
 325                 enable = !card->ipato.enabled;
 326         } else if (kstrtobool(buf, &enable)) {
 327                 rc = -EINVAL;
 328                 goto out;
 329         }
 330
 331         if (card->ipato.enabled != enable) {
 332                 card->ipato.enabled = enable;
 333                 mutex_lock(&card->ip_lock);
 334                 qeth_l3_update_ipato(card);
 335                 mutex_unlock(&card->ip_lock);
 336         }
 337 out:
 338         mutex_unlock(&card->conf_mutex);
 339         return rc ? rc : count;
 340 }
 341
 342 static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
 343                         qeth_l3_dev_ipato_enable_show,
 344                         qeth_l3_dev_ipato_enable_store);
 345
 346 static ssize_t qeth_l3_dev_ipato_invert4_show(struct device *dev,
 347                                 struct device_attribute *attr, char *buf)
 348 {
 349         struct qeth_card *card = dev_get_drvdata(dev);
 350
 351         return sprintf(buf, "%i\n", card->ipato.invert4? 1:0);
 352 }
 353
 354 static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev,
 355                                 struct device_attribute *attr,
 356                                 const char *buf, size_t count)
 357 {
 358         struct qeth_card *card = dev_get_drvdata(dev);
 359         bool invert;
 360         int rc = 0;
 361
 362         mutex_lock(&card->conf_mutex);
 363         if (sysfs_streq(buf, "toggle")) {
 364                 invert = !card->ipato.invert4;
 365         } else if (kstrtobool(buf, &invert)) {
 366                 rc = -EINVAL;
 367                 goto out;
 368         }
 369
 370         if (card->ipato.invert4 != invert) {
 371                 card->ipato.invert4 = invert;
 372                 mutex_lock(&card->ip_lock);
 373                 qeth_l3_update_ipato(card);
 374                 mutex_unlock(&card->ip_lock);
 375         }
 376 out:
 377         mutex_unlock(&card->conf_mutex);
 378         return rc ? rc : count;
 379 }
 380
 381 static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
 382                         qeth_l3_dev_ipato_invert4_show,
 383                         qeth_l3_dev_ipato_invert4_store);
 384
 385 static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
 386                         enum qeth_prot_versions proto)
 387 {
 388         struct qeth_ipato_entry *ipatoe;
 389         char addr_str[40];
 390         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 391         int i = 0;
 392
 393         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 394         /* add strlen for "/<mask>\n" */
 395         entry_len += (proto == QETH_PROT_IPV4)? 5 : 6;
 396         mutex_lock(&card->ip_lock);
 397         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 398                 if (ipatoe->proto != proto)
 399                         continue;
 400                 /* String must not be longer than PAGE_SIZE. So we check if
 401                  * string length gets near PAGE_SIZE. Then we can savely display
 402                  * the next IPv6 address (worst case, compared to IPv4) */
 403                 if ((PAGE_SIZE - i) <= entry_len)
 404                         break;
 405                 qeth_l3_ipaddr_to_string(proto, ipatoe->addr, addr_str);
 406                 i += snprintf(buf + i, PAGE_SIZE - i,
 407                               "%s/%i\n", addr_str, ipatoe->mask_bits);
 408         }
 409         mutex_unlock(&card->ip_lock);
 410         i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 411
 412         return i;
 413 }
 414
 415 static ssize_t qeth_l3_dev_ipato_add4_show(struct device *dev,
 416                                 struct device_attribute *attr, char *buf)
 417 {
 418         struct qeth_card *card = dev_get_drvdata(dev);
 419
 420         return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV4);
 421 }
 422
 423 static int qeth_l3_parse_ipatoe(const char *buf, enum qeth_prot_versions proto,
 424                   u8 *addr, int *mask_bits)
 425 {
 426         const char *start, *end;
 427         char *tmp;
 428         char buffer[40] = {0, };
 429
 430         start = buf;
 431         /* get address string */
 432         end = strchr(start, '/');
 433         if (!end || (end - start >= 40)) {
 434                 return -EINVAL;
 435         }
 436         strncpy(buffer, start, end - start);
 437         if (qeth_l3_string_to_ipaddr(buffer, proto, addr)) {
 438                 return -EINVAL;
 439         }
 440         start = end + 1;
 441         *mask_bits = simple_strtoul(start, &tmp, 10);
 442         if (!strlen(start) ||
 443             (tmp == start) ||
 444             (*mask_bits > ((proto == QETH_PROT_IPV4) ? 32 : 128))) {
 445                 return -EINVAL;
 446         }
 447         return 0;
 448 }
 449
 450 static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
 451                          struct qeth_card *card, enum qeth_prot_versions proto)
 452 {
 453         struct qeth_ipato_entry *ipatoe;
 454         u8 addr[16];
 455         int mask_bits;
 456         int rc = 0;
 457
 458         mutex_lock(&card->conf_mutex);
 459         rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
 460         if (rc)
 461                 goto out;
 462
 463         ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
 464         if (!ipatoe) {
 465                 rc = -ENOMEM;
 466                 goto out;
 467         }
 468         ipatoe->proto = proto;
 469         memcpy(ipatoe->addr, addr, (proto == QETH_PROT_IPV4)? 4:16);
 470         ipatoe->mask_bits = mask_bits;
 471
 472         rc = qeth_l3_add_ipato_entry(card, ipatoe);
 473         if (rc)
 474                 kfree(ipatoe);
 475 out:
 476         mutex_unlock(&card->conf_mutex);
 477         return rc ? rc : count;
 478 }
 479
 480 static ssize_t qeth_l3_dev_ipato_add4_store(struct device *dev,
 481                 struct device_attribute *attr, const char *buf, size_t count)
 482 {
 483         struct qeth_card *card = dev_get_drvdata(dev);
 484
 485         return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV4);
 486 }
 487
 488 static QETH_DEVICE_ATTR(ipato_add4, add4, 0644,
 489                         qeth_l3_dev_ipato_add4_show,
 490                         qeth_l3_dev_ipato_add4_store);
 491
 492 static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
 493                          struct qeth_card *card, enum qeth_prot_versions proto)
 494 {
 495         u8 addr[16];
 496         int mask_bits;
 497         int rc = 0;
 498
 499         mutex_lock(&card->conf_mutex);
 500         rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
 501         if (!rc)
 502                 rc = qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
 503         mutex_unlock(&card->conf_mutex);
 504         return rc ? rc : count;
 505 }
 506
 507 static ssize_t qeth_l3_dev_ipato_del4_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
 512         return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV4);
 513 }
 514
 515 static QETH_DEVICE_ATTR(ipato_del4, del4, 0200, NULL,
 516                         qeth_l3_dev_ipato_del4_store);
 517
 518 static ssize_t qeth_l3_dev_ipato_invert6_show(struct device *dev,
 519                 struct device_attribute *attr, char *buf)
 520 {
 521         struct qeth_card *card = dev_get_drvdata(dev);
 522
 523         return sprintf(buf, "%i\n", card->ipato.invert6? 1:0);
 524 }
 525
 526 static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev,
 527                 struct device_attribute *attr, const char *buf, size_t count)
 528 {
 529         struct qeth_card *card = dev_get_drvdata(dev);
 530         bool invert;
 531         int rc = 0;
 532
 533         mutex_lock(&card->conf_mutex);
 534         if (sysfs_streq(buf, "toggle")) {
 535                 invert = !card->ipato.invert6;
 536         } else if (kstrtobool(buf, &invert)) {
 537                 rc = -EINVAL;
 538                 goto out;
 539         }
 540
 541         if (card->ipato.invert6 != invert) {
 542                 card->ipato.invert6 = invert;
 543                 mutex_lock(&card->ip_lock);
 544                 qeth_l3_update_ipato(card);
 545                 mutex_unlock(&card->ip_lock);
 546         }
 547 out:
 548         mutex_unlock(&card->conf_mutex);
 549         return rc ? rc : count;
 550 }
 551
 552 static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
 553                         qeth_l3_dev_ipato_invert6_show,
 554                         qeth_l3_dev_ipato_invert6_store);
 555
 556
 557 static ssize_t qeth_l3_dev_ipato_add6_show(struct device *dev,
 558                                 struct device_attribute *attr, char *buf)
 559 {
 560         struct qeth_card *card = dev_get_drvdata(dev);
 561
 562         return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV6);
 563 }
 564
 565 static ssize_t qeth_l3_dev_ipato_add6_store(struct device *dev,
 566                 struct device_attribute *attr, const char *buf, size_t count)
 567 {
 568         struct qeth_card *card = dev_get_drvdata(dev);
 569
 570         return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV6);
 571 }
 572
 573 static QETH_DEVICE_ATTR(ipato_add6, add6, 0644,
 574                         qeth_l3_dev_ipato_add6_show,
 575                         qeth_l3_dev_ipato_add6_store);
 576
 577 static ssize_t qeth_l3_dev_ipato_del6_store(struct device *dev,
 578                 struct device_attribute *attr, const char *buf, size_t count)
 579 {
 580         struct qeth_card *card = dev_get_drvdata(dev);
 581
 582         return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV6);
 583 }
 584
 585 static QETH_DEVICE_ATTR(ipato_del6, del6, 0200, NULL,
 586                         qeth_l3_dev_ipato_del6_store);
 587
 588 static struct attribute *qeth_ipato_device_attrs[] = {
 589         &dev_attr_ipato_enable.attr,
 590         &dev_attr_ipato_invert4.attr,
 591         &dev_attr_ipato_add4.attr,
 592         &dev_attr_ipato_del4.attr,
 593         &dev_attr_ipato_invert6.attr,
 594         &dev_attr_ipato_add6.attr,
 595         &dev_attr_ipato_del6.attr,
 596         NULL,
 597 };
 598
 599 static const struct attribute_group qeth_device_ipato_group = {
 600         .name = "ipa_takeover",
 601         .attrs = qeth_ipato_device_attrs,
 602 };
 603
 604 static ssize_t qeth_l3_dev_ip_add_show(struct device *dev, char *buf,
 605                                        enum qeth_prot_versions proto,
 606                                        enum qeth_ip_types type)
 607 {
 608         struct qeth_card *card = dev_get_drvdata(dev);
 609         struct qeth_ipaddr *ipaddr;
 610         char addr_str[40];
 611         int str_len = 0;
 612         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 613         int i;
 614
 615         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 616         entry_len += 2; /* \n + terminator */
 617         mutex_lock(&card->ip_lock);
 618         hash_for_each(card->ip_htable, i, ipaddr, hnode) {
 619                 if (ipaddr->proto != proto || ipaddr->type != type)
 620                         continue;
 621                 /* String must not be longer than PAGE_SIZE. So we check if
 622                  * string length gets near PAGE_SIZE. Then we can savely display
 623                  * the next IPv6 address (worst case, compared to IPv4) */
 624                 if ((PAGE_SIZE - str_len) <= entry_len)
 625                         break;
 626                 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
 627                         addr_str);
 628                 str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "%s\n",
 629                                     addr_str);
 630         }
 631         mutex_unlock(&card->ip_lock);
 632         str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "\n");
 633
 634         return str_len;
 635 }
 636
 637 static ssize_t qeth_l3_dev_vipa_add4_show(struct device *dev,
 638                                           struct device_attribute *attr,
 639                                           char *buf)
 640 {
 641         return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV4,
 642                                        QETH_IP_TYPE_VIPA);
 643 }
 644
 645 static int qeth_l3_parse_vipae(const char *buf, enum qeth_prot_versions proto,
 646                  u8 *addr)
 647 {
 648         if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
 649                 return -EINVAL;
 650         }
 651         return 0;
 652 }
 653
 654 static ssize_t qeth_l3_dev_vipa_add_store(const char *buf, size_t count,
 655                         struct qeth_card *card, enum qeth_prot_versions proto)
 656 {
 657         u8 addr[16] = {0, };
 658         int rc;
 659
 660         mutex_lock(&card->conf_mutex);
 661         rc = qeth_l3_parse_vipae(buf, proto, addr);
 662         if (!rc)
 663                 rc = qeth_l3_modify_rxip_vipa(card, true, addr,
 664                                               QETH_IP_TYPE_VIPA, proto);
 665         mutex_unlock(&card->conf_mutex);
 666         return rc ? rc : count;
 667 }
 668
 669 static ssize_t qeth_l3_dev_vipa_add4_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         return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV4);
 675 }
 676
 677 static QETH_DEVICE_ATTR(vipa_add4, add4, 0644,
 678                         qeth_l3_dev_vipa_add4_show,
 679                         qeth_l3_dev_vipa_add4_store);
 680
 681 static ssize_t qeth_l3_dev_vipa_del_store(const char *buf, size_t count,
 682                          struct qeth_card *card, enum qeth_prot_versions proto)
 683 {
 684         u8 addr[16];
 685         int rc;
 686
 687         mutex_lock(&card->conf_mutex);
 688         rc = qeth_l3_parse_vipae(buf, proto, addr);
 689         if (!rc)
 690                 rc = qeth_l3_modify_rxip_vipa(card, false, addr,
 691                                               QETH_IP_TYPE_VIPA, proto);
 692         mutex_unlock(&card->conf_mutex);
 693         return rc ? rc : count;
 694 }
 695
 696 static ssize_t qeth_l3_dev_vipa_del4_store(struct device *dev,
 697                 struct device_attribute *attr, const char *buf, size_t count)
 698 {
 699         struct qeth_card *card = dev_get_drvdata(dev);
 700
 701         return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV4);
 702 }
 703
 704 static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
 705                         qeth_l3_dev_vipa_del4_store);
 706
 707 static ssize_t qeth_l3_dev_vipa_add6_show(struct device *dev,
 708                                           struct device_attribute *attr,
 709                                           char *buf)
 710 {
 711         return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV6,
 712                                        QETH_IP_TYPE_VIPA);
 713 }
 714
 715 static ssize_t qeth_l3_dev_vipa_add6_store(struct device *dev,
 716                 struct device_attribute *attr, const char *buf, size_t count)
 717 {
 718         struct qeth_card *card = dev_get_drvdata(dev);
 719
 720         return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV6);
 721 }
 722
 723 static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
 724                         qeth_l3_dev_vipa_add6_show,
 725                         qeth_l3_dev_vipa_add6_store);
 726
 727 static ssize_t qeth_l3_dev_vipa_del6_store(struct device *dev,
 728                 struct device_attribute *attr, const char *buf, size_t count)
 729 {
 730         struct qeth_card *card = dev_get_drvdata(dev);
 731
 732         return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV6);
 733 }
 734
 735 static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
 736                         qeth_l3_dev_vipa_del6_store);
 737
 738 static struct attribute *qeth_vipa_device_attrs[] = {
 739         &dev_attr_vipa_add4.attr,
 740         &dev_attr_vipa_del4.attr,
 741         &dev_attr_vipa_add6.attr,
 742         &dev_attr_vipa_del6.attr,
 743         NULL,
 744 };
 745
 746 static const struct attribute_group qeth_device_vipa_group = {
 747         .name = "vipa",
 748         .attrs = qeth_vipa_device_attrs,
 749 };
 750
 751 static ssize_t qeth_l3_dev_rxip_add4_show(struct device *dev,
 752                                           struct device_attribute *attr,
 753                                           char *buf)
 754 {
 755         return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV4,
 756                                        QETH_IP_TYPE_RXIP);
 757 }
 758
 759 static int qeth_l3_parse_rxipe(const char *buf, enum qeth_prot_versions proto,
 760                  u8 *addr)
 761 {
 762         __be32 ipv4_addr;
 763         struct in6_addr ipv6_addr;
 764
 765         if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
 766                 return -EINVAL;
 767         }
 768         if (proto == QETH_PROT_IPV4) {
 769                 memcpy(&ipv4_addr, addr, sizeof(ipv4_addr));
 770                 if (ipv4_is_multicast(ipv4_addr)) {
 771                         QETH_DBF_MESSAGE(2, "multicast rxip not supported.\n");
 772                         return -EINVAL;
 773                 }
 774         } else if (proto == QETH_PROT_IPV6) {
 775                 memcpy(&ipv6_addr, addr, sizeof(ipv6_addr));
 776                 if (ipv6_addr_is_multicast(&ipv6_addr)) {
 777                         QETH_DBF_MESSAGE(2, "multicast rxip not supported.\n");
 778                         return -EINVAL;
 779                 }
 780         }
 781
 782         return 0;
 783 }
 784
 785 static ssize_t qeth_l3_dev_rxip_add_store(const char *buf, size_t count,
 786                         struct qeth_card *card, enum qeth_prot_versions proto)
 787 {
 788         u8 addr[16] = {0, };
 789         int rc;
 790
 791         mutex_lock(&card->conf_mutex);
 792         rc = qeth_l3_parse_rxipe(buf, proto, addr);
 793         if (!rc)
 794                 rc = qeth_l3_modify_rxip_vipa(card, true, addr,
 795                                               QETH_IP_TYPE_RXIP, proto);
 796         mutex_unlock(&card->conf_mutex);
 797         return rc ? rc : count;
 798 }
 799
 800 static ssize_t qeth_l3_dev_rxip_add4_store(struct device *dev,
 801                 struct device_attribute *attr, const char *buf, size_t count)
 802 {
 803         struct qeth_card *card = dev_get_drvdata(dev);
 804
 805         return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV4);
 806 }
 807
 808 static QETH_DEVICE_ATTR(rxip_add4, add4, 0644,
 809                         qeth_l3_dev_rxip_add4_show,
 810                         qeth_l3_dev_rxip_add4_store);
 811
 812 static ssize_t qeth_l3_dev_rxip_del_store(const char *buf, size_t count,
 813                         struct qeth_card *card, enum qeth_prot_versions proto)
 814 {
 815         u8 addr[16];
 816         int rc;
 817
 818         mutex_lock(&card->conf_mutex);
 819         rc = qeth_l3_parse_rxipe(buf, proto, addr);
 820         if (!rc)
 821                 rc = qeth_l3_modify_rxip_vipa(card, false, addr,
 822                                               QETH_IP_TYPE_RXIP, proto);
 823         mutex_unlock(&card->conf_mutex);
 824         return rc ? rc : count;
 825 }
 826
 827 static ssize_t qeth_l3_dev_rxip_del4_store(struct device *dev,
 828                 struct device_attribute *attr, const char *buf, size_t count)
 829 {
 830         struct qeth_card *card = dev_get_drvdata(dev);
 831
 832         return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV4);
 833 }
 834
 835 static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
 836                         qeth_l3_dev_rxip_del4_store);
 837
 838 static ssize_t qeth_l3_dev_rxip_add6_show(struct device *dev,
 839                                           struct device_attribute *attr,
 840                                           char *buf)
 841 {
 842         return qeth_l3_dev_ip_add_show(dev, buf, QETH_PROT_IPV6,
 843                                        QETH_IP_TYPE_RXIP);
 844 }
 845
 846 static ssize_t qeth_l3_dev_rxip_add6_store(struct device *dev,
 847                 struct device_attribute *attr, const char *buf, size_t count)
 848 {
 849         struct qeth_card *card = dev_get_drvdata(dev);
 850
 851         return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV6);
 852 }
 853
 854 static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
 855                         qeth_l3_dev_rxip_add6_show,
 856                         qeth_l3_dev_rxip_add6_store);
 857
 858 static ssize_t qeth_l3_dev_rxip_del6_store(struct device *dev,
 859                 struct device_attribute *attr, const char *buf, size_t count)
 860 {
 861         struct qeth_card *card = dev_get_drvdata(dev);
 862
 863         return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV6);
 864 }
 865
 866 static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,
 867                         qeth_l3_dev_rxip_del6_store);
 868
 869 static struct attribute *qeth_rxip_device_attrs[] = {
 870         &dev_attr_rxip_add4.attr,
 871         &dev_attr_rxip_del4.attr,
 872         &dev_attr_rxip_add6.attr,
 873         &dev_attr_rxip_del6.attr,
 874         NULL,
 875 };
 876
 877 static const struct attribute_group qeth_device_rxip_group = {
 878         .name = "rxip",
 879         .attrs = qeth_rxip_device_attrs,
 880 };
 881
 882 static const struct attribute_group *qeth_l3_only_attr_groups[] = {
 883         &qeth_l3_device_attr_group,
 884         &qeth_device_ipato_group,
 885         &qeth_device_vipa_group,
 886         &qeth_device_rxip_group,
 887         NULL,
 888 };
 889
 890 int qeth_l3_create_device_attributes(struct device *dev)
 891 {
 892         return sysfs_create_groups(&dev->kobj, qeth_l3_only_attr_groups);
 893 }
 894
 895 void qeth_l3_remove_device_attributes(struct device *dev)
 896 {
 897         sysfs_remove_groups(&dev->kobj, qeth_l3_only_attr_groups);
 898 }
 899
 900 const struct attribute_group *qeth_l3_attr_groups[] = {
 901         &qeth_device_attr_group,
 902         &qeth_device_blkt_group,
 903         /* l3 specific, see qeth_l3_only_attr_groups: */
 904         &qeth_l3_device_attr_group,
 905         &qeth_device_ipato_group,
 906         &qeth_device_vipa_group,
 907         &qeth_device_rxip_group,
 908         NULL,
 909 };