drivers/s390/net/qeth_l3_sys.c

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