drivers/s390/net/qeth_l3_sys.c

   1 /*
   2  *    Copyright IBM Corp. 2007
   3  *    Author(s): Utz Bacher <[email protected]>,
   4  *               Frank Pavlic <[email protected]>,
   5  *               Thomas Spatzier <[email protected]>,
   6  *               Frank Blaschka <[email protected]>
   7  */
   8
   9 #include <linux/slab.h>
  10 #include <asm/ebcdic.h>
  11 #include <linux/hashtable.h>
  12 #include "qeth_l3.h"
  13
  14 #define QETH_DEVICE_ATTR(_id, _name, _mode, _show, _store) \
  15 struct device_attribute dev_attr_##_id = __ATTR(_name, _mode, _show, _store)
  16
  17 static 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
  45 static 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
  56 static 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;
  61         int rc = 0;
  62
  63         mutex_lock(&card->conf_mutex);
  64         if (sysfs_streq(buf, "no_router")) {
  65                 route->type = NO_ROUTER;
  66         } else if (sysfs_streq(buf, "primary_connector")) {
  67                 route->type = PRIMARY_CONNECTOR;
  68         } else if (sysfs_streq(buf, "secondary_connector")) {
  69                 route->type = SECONDARY_CONNECTOR;
  70         } else if (sysfs_streq(buf, "primary_router")) {
  71                 route->type = PRIMARY_ROUTER;
  72         } else if (sysfs_streq(buf, "secondary_router")) {
  73                 route->type = SECONDARY_ROUTER;
  74         } else if (sysfs_streq(buf, "multicast_router")) {
  75                 route->type = MULTICAST_ROUTER;
  76         } else {
  77                 rc = -EINVAL;
  78                 goto out;
  79         }
  80         if (qeth_card_hw_is_reachable(card) &&
  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         }
  87 out:
  88         if (rc)
  89                 route->type = old_route_type;
  90         mutex_unlock(&card->conf_mutex);
  91         return rc ? rc : count;
  92 }
  93
  94 static 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
 106 static DEVICE_ATTR(route4, 0644, qeth_l3_dev_route4_show,
 107                         qeth_l3_dev_route4_store);
 108
 109 static 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
 117         return qeth_l3_dev_route_show(card, &card->options.route6, buf);
 118 }
 119
 120 static 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
 128         return qeth_l3_dev_route_store(card, &card->options.route6,
 129                                 QETH_PROT_IPV6, buf, count);
 130 }
 131
 132 static DEVICE_ATTR(route6, 0644, qeth_l3_dev_route6_show,
 133                         qeth_l3_dev_route6_store);
 134
 135 static 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
 146 static 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;
 151         int i, rc = 0;
 152
 153         if (!card)
 154                 return -EINVAL;
 155
 156         mutex_lock(&card->conf_mutex);
 157         if ((card->state != CARD_STATE_DOWN) &&
 158             (card->state != CARD_STATE_RECOVER)) {
 159                 rc = -EPERM;
 160                 goto out;
 161         }
 162
 163         i = simple_strtoul(buf, &tmp, 16);
 164         if ((i == 0) || (i == 1))
 165                 card->options.fake_broadcast = i;
 166         else
 167                 rc = -EINVAL;
 168 out:
 169         mutex_unlock(&card->conf_mutex);
 170         return rc ? rc : count;
 171 }
 172
 173 static DEVICE_ATTR(fake_broadcast, 0644, qeth_l3_dev_fake_broadcast_show,
 174                    qeth_l3_dev_fake_broadcast_store);
 175
 176 static 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
 187 static 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);
 191         int rc = 0;
 192         unsigned long i;
 193
 194         if (!card)
 195                 return -EINVAL;
 196
 197         if (card->info.type != QETH_CARD_TYPE_IQD)
 198                 return -EPERM;
 199         if (card->options.cq == QETH_CQ_ENABLED)
 200                 return -EPERM;
 201
 202         mutex_lock(&card->conf_mutex);
 203         if ((card->state != CARD_STATE_DOWN) &&
 204             (card->state != CARD_STATE_RECOVER)) {
 205                 rc = -EPERM;
 206                 goto out;
 207         }
 208
 209         rc = kstrtoul(buf, 16, &i);
 210         if (rc) {
 211                 rc = -EINVAL;
 212                 goto out;
 213         }
 214         switch (i) {
 215         case 0:
 216                 card->options.sniffer = i;
 217                 break;
 218         case 1:
 219                 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
 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);
 226                 } else
 227                         rc = -EPERM;
 228                 break;
 229         default:
 230                 rc = -EINVAL;
 231         }
 232 out:
 233         mutex_unlock(&card->conf_mutex);
 234         return rc ? rc : count;
 235 }
 236
 237 static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
 238                 qeth_l3_dev_sniffer_store);
 239
 240
 241 static 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
 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
 258 static 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);
 286                 if (!addr)
 287                         return -ENOMEM;
 288
 289                 addr->u.a6.addr.s6_addr32[0] = cpu_to_be32(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
 297                 spin_lock_bh(&card->ip_lock);
 298                 qeth_l3_delete_ip(card, addr);
 299                 spin_unlock_bh(&card->ip_lock);
 300                 kfree(addr);
 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
 315         snprintf(card->options.hsuid, sizeof(card->options.hsuid),
 316                  "%-8s", tmp);
 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] = cpu_to_be32(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;
 331
 332         spin_lock_bh(&card->ip_lock);
 333         qeth_l3_add_ip(card, addr);
 334         spin_unlock_bh(&card->ip_lock);
 335         kfree(addr);
 336
 337         return count;
 338 }
 339
 340 static DEVICE_ATTR(hsuid, 0644, qeth_l3_dev_hsuid_show,
 341                    qeth_l3_dev_hsuid_store);
 342
 343
 344 static struct attribute *qeth_l3_device_attrs[] = {
 345         &dev_attr_route4.attr,
 346         &dev_attr_route6.attr,
 347         &dev_attr_fake_broadcast.attr,
 348         &dev_attr_sniffer.attr,
 349         &dev_attr_hsuid.attr,
 350         NULL,
 351 };
 352
 353 static struct attribute_group qeth_l3_device_attr_group = {
 354         .attrs = qeth_l3_device_attrs,
 355 };
 356
 357 static 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
 368 static 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);
 372         struct qeth_ipaddr *addr;
 373         int i, rc = 0;
 374
 375         if (!card)
 376                 return -EINVAL;
 377
 378         mutex_lock(&card->conf_mutex);
 379         if ((card->state != CARD_STATE_DOWN) &&
 380             (card->state != CARD_STATE_RECOVER)) {
 381                 rc = -EPERM;
 382                 goto out;
 383         }
 384
 385         if (sysfs_streq(buf, "toggle")) {
 386                 card->ipato.enabled = (card->ipato.enabled)? 0 : 1;
 387         } else if (sysfs_streq(buf, "1")) {
 388                 card->ipato.enabled = 1;
 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 |=
 393                                         QETH_IPA_SETIP_TAKEOVER_FLAG;
 394                         }
 395         } else if (sysfs_streq(buf, "0")) {
 396                 card->ipato.enabled = 0;
 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                         }
 403         } else
 404                 rc = -EINVAL;
 405 out:
 406         mutex_unlock(&card->conf_mutex);
 407         return rc ? rc : count;
 408 }
 409
 410 static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
 411                         qeth_l3_dev_ipato_enable_show,
 412                         qeth_l3_dev_ipato_enable_store);
 413
 414 static 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
 425 static 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);
 430         int rc = 0;
 431
 432         if (!card)
 433                 return -EINVAL;
 434
 435         mutex_lock(&card->conf_mutex);
 436         if (sysfs_streq(buf, "toggle"))
 437                 card->ipato.invert4 = (card->ipato.invert4)? 0 : 1;
 438         else if (sysfs_streq(buf, "1"))
 439                 card->ipato.invert4 = 1;
 440         else if (sysfs_streq(buf, "0"))
 441                 card->ipato.invert4 = 0;
 442         else
 443                 rc = -EINVAL;
 444         mutex_unlock(&card->conf_mutex);
 445         return rc ? rc : count;
 446 }
 447
 448 static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
 449                         qeth_l3_dev_ipato_invert4_show,
 450                         qeth_l3_dev_ipato_invert4_store);
 451
 452 static 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;
 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;
 463         spin_lock_bh(&card->ip_lock);
 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         }
 476         spin_unlock_bh(&card->ip_lock);
 477         i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 478
 479         return i;
 480 }
 481
 482 static 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
 493 static 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)) {
 504                 return -EINVAL;
 505         }
 506         strncpy(buffer, start, end - start);
 507         if (qeth_l3_string_to_ipaddr(buffer, proto, addr)) {
 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))) {
 515                 return -EINVAL;
 516         }
 517         return 0;
 518 }
 519
 520 static 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;
 526         int rc = 0;
 527
 528         mutex_lock(&card->conf_mutex);
 529         rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
 530         if (rc)
 531                 goto out;
 532
 533         ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
 534         if (!ipatoe) {
 535                 rc = -ENOMEM;
 536                 goto out;
 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);
 543         if (rc)
 544                 kfree(ipatoe);
 545 out:
 546         mutex_unlock(&card->conf_mutex);
 547         return rc ? rc : count;
 548 }
 549
 550 static 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
 561 static QETH_DEVICE_ATTR(ipato_add4, add4, 0644,
 562                         qeth_l3_dev_ipato_add4_show,
 563                         qeth_l3_dev_ipato_add4_store);
 564
 565 static 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;
 570         int rc = 0;
 571
 572         mutex_lock(&card->conf_mutex);
 573         rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
 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;
 578 }
 579
 580 static 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
 591 static QETH_DEVICE_ATTR(ipato_del4, del4, 0200, NULL,
 592                         qeth_l3_dev_ipato_del4_store);
 593
 594 static 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
 605 static 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);
 609         int rc = 0;
 610
 611         if (!card)
 612                 return -EINVAL;
 613
 614         mutex_lock(&card->conf_mutex);
 615         if (sysfs_streq(buf, "toggle"))
 616                 card->ipato.invert6 = (card->ipato.invert6)? 0 : 1;
 617         else if (sysfs_streq(buf, "1"))
 618                 card->ipato.invert6 = 1;
 619         else if (sysfs_streq(buf, "0"))
 620                 card->ipato.invert6 = 0;
 621         else
 622                 rc = -EINVAL;
 623         mutex_unlock(&card->conf_mutex);
 624         return rc ? rc : count;
 625 }
 626
 627 static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
 628                         qeth_l3_dev_ipato_invert6_show,
 629                         qeth_l3_dev_ipato_invert6_store);
 630
 631
 632 static 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
 643 static 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
 654 static QETH_DEVICE_ATTR(ipato_add6, add6, 0644,
 655                         qeth_l3_dev_ipato_add6_show,
 656                         qeth_l3_dev_ipato_add6_store);
 657
 658 static 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
 669 static QETH_DEVICE_ATTR(ipato_del6, del6, 0200, NULL,
 670                         qeth_l3_dev_ipato_del6_store);
 671
 672 static 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
 683 static struct attribute_group qeth_device_ipato_group = {
 684         .name = "ipa_takeover",
 685         .attrs = qeth_ipato_device_attrs,
 686 };
 687
 688 static 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];
 693         int str_len = 0;
 694         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 695         int i;
 696
 697         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 698         entry_len += 2; /* \n + terminator */
 699         spin_lock_bh(&card->ip_lock);
 700         hash_for_each(card->ip_htable, i, ipaddr, hnode) {
 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) */
 708                 if ((PAGE_SIZE - str_len) <= entry_len)
 709                         break;
 710                 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
 711                         addr_str);
 712                 str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "%s\n",
 713                                     addr_str);
 714         }
 715         spin_unlock_bh(&card->ip_lock);
 716         str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "\n");
 717
 718         return str_len;
 719 }
 720
 721 static 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
 732 static 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)) {
 736                 return -EINVAL;
 737         }
 738         return 0;
 739 }
 740
 741 static 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
 747         mutex_lock(&card->conf_mutex);
 748         rc = qeth_l3_parse_vipae(buf, proto, addr);
 749         if (!rc)
 750                 rc = qeth_l3_add_vipa(card, proto, addr);
 751         mutex_unlock(&card->conf_mutex);
 752         return rc ? rc : count;
 753 }
 754
 755 static 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
 766 static QETH_DEVICE_ATTR(vipa_add4, add4, 0644,
 767                         qeth_l3_dev_vipa_add4_show,
 768                         qeth_l3_dev_vipa_add4_store);
 769
 770 static 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
 776         mutex_lock(&card->conf_mutex);
 777         rc = qeth_l3_parse_vipae(buf, proto, addr);
 778         if (!rc)
 779                 qeth_l3_del_vipa(card, proto, addr);
 780         mutex_unlock(&card->conf_mutex);
 781         return rc ? rc : count;
 782 }
 783
 784 static 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
 795 static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
 796                         qeth_l3_dev_vipa_del4_store);
 797
 798 static 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
 809 static 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
 820 static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
 821                         qeth_l3_dev_vipa_add6_show,
 822                         qeth_l3_dev_vipa_add6_store);
 823
 824 static 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
 835 static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
 836                         qeth_l3_dev_vipa_del6_store);
 837
 838 static 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
 846 static struct attribute_group qeth_device_vipa_group = {
 847         .name = "vipa",
 848         .attrs = qeth_vipa_device_attrs,
 849 };
 850
 851 static 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];
 856         int str_len = 0;
 857         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 858         int i;
 859
 860         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 861         entry_len += 2; /* \n + terminator */
 862         spin_lock_bh(&card->ip_lock);
 863         hash_for_each(card->ip_htable, i, ipaddr, hnode) {
 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) */
 871                 if ((PAGE_SIZE - str_len) <= entry_len)
 872                         break;
 873                 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
 874                         addr_str);
 875                 str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "%s\n",
 876                                     addr_str);
 877         }
 878         spin_unlock_bh(&card->ip_lock);
 879         str_len += snprintf(buf + str_len, PAGE_SIZE - str_len, "\n");
 880
 881         return str_len;
 882 }
 883
 884 static 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
 895 static 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)) {
 899                 return -EINVAL;
 900         }
 901         return 0;
 902 }
 903
 904 static 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
 910         mutex_lock(&card->conf_mutex);
 911         rc = qeth_l3_parse_rxipe(buf, proto, addr);
 912         if (!rc)
 913                 rc = qeth_l3_add_rxip(card, proto, addr);
 914         mutex_unlock(&card->conf_mutex);
 915         return rc ? rc : count;
 916 }
 917
 918 static 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
 929 static QETH_DEVICE_ATTR(rxip_add4, add4, 0644,
 930                         qeth_l3_dev_rxip_add4_show,
 931                         qeth_l3_dev_rxip_add4_store);
 932
 933 static 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
 939         mutex_lock(&card->conf_mutex);
 940         rc = qeth_l3_parse_rxipe(buf, proto, addr);
 941         if (!rc)
 942                 qeth_l3_del_rxip(card, proto, addr);
 943         mutex_unlock(&card->conf_mutex);
 944         return rc ? rc : count;
 945 }
 946
 947 static 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
 958 static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
 959                         qeth_l3_dev_rxip_del4_store);
 960
 961 static 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
 972 static 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
 983 static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
 984                         qeth_l3_dev_rxip_add6_show,
 985                         qeth_l3_dev_rxip_add6_store);
 986
 987 static 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
 998 static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,
 999                         qeth_l3_dev_rxip_del6_store);
1000
1001 static 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
1009 static struct attribute_group qeth_device_rxip_group = {
1010         .name = "rxip",
1011         .attrs = qeth_rxip_device_attrs,
1012 };
1013
1014 int 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
1045 void 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 }