drivers/s390/net/qeth_l3_sys.c

   1 /*
   2  *  drivers/s390/net/qeth_l3_sys.c
   3  *
   4  *    Copyright IBM Corp. 2007
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  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 const char *qeth_l3_get_checksum_str(struct qeth_card *card)
  17 {
  18         if (card->options.checksum_type == SW_CHECKSUMMING)
  19                 return "sw";
  20         else if (card->options.checksum_type == HW_CHECKSUMMING)
  21                 return "hw";
  22         else
  23                 return "no";
  24 }
  25
  26 static ssize_t qeth_l3_dev_route_show(struct qeth_card *card,
  27                         struct qeth_routing_info *route, char *buf)
  28 {
  29         switch (route->type) {
  30         case PRIMARY_ROUTER:
  31                 return sprintf(buf, "%s\n", "primary router");
  32         case SECONDARY_ROUTER:
  33                 return sprintf(buf, "%s\n", "secondary router");
  34         case MULTICAST_ROUTER:
  35                 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
  36                         return sprintf(buf, "%s\n", "multicast router+");
  37                 else
  38                         return sprintf(buf, "%s\n", "multicast router");
  39         case PRIMARY_CONNECTOR:
  40                 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
  41                         return sprintf(buf, "%s\n", "primary connector+");
  42                 else
  43                         return sprintf(buf, "%s\n", "primary connector");
  44         case SECONDARY_CONNECTOR:
  45                 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
  46                         return sprintf(buf, "%s\n", "secondary connector+");
  47                 else
  48                         return sprintf(buf, "%s\n", "secondary connector");
  49         default:
  50                 return sprintf(buf, "%s\n", "no");
  51         }
  52 }
  53
  54 static ssize_t qeth_l3_dev_route4_show(struct device *dev,
  55                         struct device_attribute *attr, char *buf)
  56 {
  57         struct qeth_card *card = dev_get_drvdata(dev);
  58
  59         if (!card)
  60                 return -EINVAL;
  61
  62         return qeth_l3_dev_route_show(card, &card->options.route4, buf);
  63 }
  64
  65 static ssize_t qeth_l3_dev_route_store(struct qeth_card *card,
  66                 struct qeth_routing_info *route, enum qeth_prot_versions prot,
  67                 const char *buf, size_t count)
  68 {
  69         enum qeth_routing_types old_route_type = route->type;
  70         char *tmp;
  71         int rc;
  72
  73         tmp = strsep((char **) &buf, "\n");
  74
  75         if (!strcmp(tmp, "no_router")) {
  76                 route->type = NO_ROUTER;
  77         } else if (!strcmp(tmp, "primary_connector")) {
  78                 route->type = PRIMARY_CONNECTOR;
  79         } else if (!strcmp(tmp, "secondary_connector")) {
  80                 route->type = SECONDARY_CONNECTOR;
  81         } else if (!strcmp(tmp, "primary_router")) {
  82                 route->type = PRIMARY_ROUTER;
  83         } else if (!strcmp(tmp, "secondary_router")) {
  84                 route->type = SECONDARY_ROUTER;
  85         } else if (!strcmp(tmp, "multicast_router")) {
  86                 route->type = MULTICAST_ROUTER;
  87         } else {
  88                 return -EINVAL;
  89         }
  90         if (((card->state == CARD_STATE_SOFTSETUP) ||
  91              (card->state == CARD_STATE_UP)) &&
  92             (old_route_type != route->type)) {
  93                 if (prot == QETH_PROT_IPV4)
  94                         rc = qeth_l3_setrouting_v4(card);
  95                 else if (prot == QETH_PROT_IPV6)
  96                         rc = qeth_l3_setrouting_v6(card);
  97         }
  98         return count;
  99 }
 100
 101 static ssize_t qeth_l3_dev_route4_store(struct device *dev,
 102                 struct device_attribute *attr, const char *buf, size_t count)
 103 {
 104         struct qeth_card *card = dev_get_drvdata(dev);
 105
 106         if (!card)
 107                 return -EINVAL;
 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         if (!card)
 122                 return -EINVAL;
 123
 124         return qeth_l3_dev_route_show(card, &card->options.route6, buf);
 125 }
 126
 127 static ssize_t qeth_l3_dev_route6_store(struct device *dev,
 128                 struct device_attribute *attr, const char *buf, size_t count)
 129 {
 130         struct qeth_card *card = dev_get_drvdata(dev);
 131
 132         if (!card)
 133                 return -EINVAL;
 134
 135         return qeth_l3_dev_route_store(card, &card->options.route6,
 136                                 QETH_PROT_IPV6, buf, count);
 137 }
 138
 139 static DEVICE_ATTR(route6, 0644, qeth_l3_dev_route6_show,
 140                         qeth_l3_dev_route6_store);
 141
 142 static ssize_t qeth_l3_dev_fake_broadcast_show(struct device *dev,
 143                         struct device_attribute *attr, char *buf)
 144 {
 145         struct qeth_card *card = dev_get_drvdata(dev);
 146
 147         if (!card)
 148                 return -EINVAL;
 149
 150         return sprintf(buf, "%i\n", card->options.fake_broadcast? 1:0);
 151 }
 152
 153 static ssize_t qeth_l3_dev_fake_broadcast_store(struct device *dev,
 154                 struct device_attribute *attr, const char *buf, size_t count)
 155 {
 156         struct qeth_card *card = dev_get_drvdata(dev);
 157         char *tmp;
 158         int i;
 159
 160         if (!card)
 161                 return -EINVAL;
 162
 163         if ((card->state != CARD_STATE_DOWN) &&
 164             (card->state != CARD_STATE_RECOVER))
 165                 return -EPERM;
 166
 167         i = simple_strtoul(buf, &tmp, 16);
 168         if ((i == 0) || (i == 1))
 169                 card->options.fake_broadcast = i;
 170         else {
 171                 return -EINVAL;
 172         }
 173         return count;
 174 }
 175
 176 static DEVICE_ATTR(fake_broadcast, 0644, qeth_l3_dev_fake_broadcast_show,
 177                    qeth_l3_dev_fake_broadcast_store);
 178
 179 static ssize_t qeth_l3_dev_broadcast_mode_show(struct device *dev,
 180                                 struct device_attribute *attr, char *buf)
 181 {
 182         struct qeth_card *card = dev_get_drvdata(dev);
 183
 184         if (!card)
 185                 return -EINVAL;
 186
 187         if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
 188               (card->info.link_type == QETH_LINK_TYPE_LANE_TR)))
 189                 return sprintf(buf, "n/a\n");
 190
 191         return sprintf(buf, "%s\n", (card->options.broadcast_mode ==
 192                                      QETH_TR_BROADCAST_ALLRINGS)?
 193                        "all rings":"local");
 194 }
 195
 196 static ssize_t qeth_l3_dev_broadcast_mode_store(struct device *dev,
 197                 struct device_attribute *attr, const char *buf, size_t count)
 198 {
 199         struct qeth_card *card = dev_get_drvdata(dev);
 200         char *tmp;
 201
 202         if (!card)
 203                 return -EINVAL;
 204
 205         if ((card->state != CARD_STATE_DOWN) &&
 206             (card->state != CARD_STATE_RECOVER))
 207                 return -EPERM;
 208
 209         if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
 210               (card->info.link_type == QETH_LINK_TYPE_LANE_TR))) {
 211                 return -EINVAL;
 212         }
 213
 214         tmp = strsep((char **) &buf, "\n");
 215
 216         if (!strcmp(tmp, "local")) {
 217                 card->options.broadcast_mode = QETH_TR_BROADCAST_LOCAL;
 218                 return count;
 219         } else if (!strcmp(tmp, "all_rings")) {
 220                 card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
 221                 return count;
 222         } else {
 223                 return -EINVAL;
 224         }
 225         return count;
 226 }
 227
 228 static DEVICE_ATTR(broadcast_mode, 0644, qeth_l3_dev_broadcast_mode_show,
 229                    qeth_l3_dev_broadcast_mode_store);
 230
 231 static ssize_t qeth_l3_dev_canonical_macaddr_show(struct device *dev,
 232                                 struct device_attribute *attr, char *buf)
 233 {
 234         struct qeth_card *card = dev_get_drvdata(dev);
 235
 236         if (!card)
 237                 return -EINVAL;
 238
 239         if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
 240               (card->info.link_type == QETH_LINK_TYPE_LANE_TR)))
 241                 return sprintf(buf, "n/a\n");
 242
 243         return sprintf(buf, "%i\n", (card->options.macaddr_mode ==
 244                                      QETH_TR_MACADDR_CANONICAL)? 1:0);
 245 }
 246
 247 static ssize_t qeth_l3_dev_canonical_macaddr_store(struct device *dev,
 248                 struct device_attribute *attr, const char *buf, size_t count)
 249 {
 250         struct qeth_card *card = dev_get_drvdata(dev);
 251         char *tmp;
 252         int i;
 253
 254         if (!card)
 255                 return -EINVAL;
 256
 257         if ((card->state != CARD_STATE_DOWN) &&
 258             (card->state != CARD_STATE_RECOVER))
 259                 return -EPERM;
 260
 261         if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
 262               (card->info.link_type == QETH_LINK_TYPE_LANE_TR))) {
 263                 return -EINVAL;
 264         }
 265
 266         i = simple_strtoul(buf, &tmp, 16);
 267         if ((i == 0) || (i == 1))
 268                 card->options.macaddr_mode = i?
 269                         QETH_TR_MACADDR_CANONICAL :
 270                         QETH_TR_MACADDR_NONCANONICAL;
 271         else {
 272                 return -EINVAL;
 273         }
 274         return count;
 275 }
 276
 277 static DEVICE_ATTR(canonical_macaddr, 0644, qeth_l3_dev_canonical_macaddr_show,
 278                    qeth_l3_dev_canonical_macaddr_store);
 279
 280 static ssize_t qeth_l3_dev_checksum_show(struct device *dev,
 281                         struct device_attribute *attr, char *buf)
 282 {
 283         struct qeth_card *card = dev_get_drvdata(dev);
 284
 285         if (!card)
 286                 return -EINVAL;
 287
 288         return sprintf(buf, "%s checksumming\n",
 289                         qeth_l3_get_checksum_str(card));
 290 }
 291
 292 static ssize_t qeth_l3_dev_checksum_store(struct device *dev,
 293                 struct device_attribute *attr, const char *buf, size_t count)
 294 {
 295         struct qeth_card *card = dev_get_drvdata(dev);
 296         enum qeth_checksum_types csum_type;
 297         char *tmp;
 298         int rc;
 299
 300         if (!card)
 301                 return -EINVAL;
 302
 303         tmp = strsep((char **) &buf, "\n");
 304         if (!strcmp(tmp, "sw_checksumming"))
 305                 csum_type = SW_CHECKSUMMING;
 306         else if (!strcmp(tmp, "hw_checksumming"))
 307                 csum_type = HW_CHECKSUMMING;
 308         else if (!strcmp(tmp, "no_checksumming"))
 309                 csum_type = NO_CHECKSUMMING;
 310         else
 311                 return -EINVAL;
 312
 313         rc = qeth_l3_set_rx_csum(card, csum_type);
 314         if (rc)
 315                 return rc;
 316         return count;
 317 }
 318
 319 static DEVICE_ATTR(checksumming, 0644, qeth_l3_dev_checksum_show,
 320                 qeth_l3_dev_checksum_store);
 321
 322 static ssize_t qeth_l3_dev_sniffer_show(struct device *dev,
 323                 struct device_attribute *attr, char *buf)
 324 {
 325         struct qeth_card *card = dev_get_drvdata(dev);
 326
 327         if (!card)
 328                 return -EINVAL;
 329
 330         return sprintf(buf, "%i\n", card->options.sniffer ? 1 : 0);
 331 }
 332
 333 static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
 334                 struct device_attribute *attr, const char *buf, size_t count)
 335 {
 336         struct qeth_card *card = dev_get_drvdata(dev);
 337         int ret;
 338         unsigned long i;
 339
 340         if (!card)
 341                 return -EINVAL;
 342
 343         if (card->info.type != QETH_CARD_TYPE_IQD)
 344                 return -EPERM;
 345
 346         if ((card->state != CARD_STATE_DOWN) &&
 347             (card->state != CARD_STATE_RECOVER))
 348                 return -EPERM;
 349
 350         ret = strict_strtoul(buf, 16, &i);
 351         if (ret)
 352                 return -EINVAL;
 353         switch (i) {
 354         case 0:
 355                 card->options.sniffer = i;
 356                 break;
 357         case 1:
 358                 ret = qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
 359                 if (card->ssqd.qdioac2 & QETH_SNIFF_AVAIL) {
 360                         card->options.sniffer = i;
 361                         if (card->qdio.init_pool.buf_count !=
 362                                         QETH_IN_BUF_COUNT_MAX)
 363                                 qeth_realloc_buffer_pool(card,
 364                                         QETH_IN_BUF_COUNT_MAX);
 365                         break;
 366                 } else
 367                         return -EPERM;
 368         default:   /* fall through */
 369                 return -EINVAL;
 370         }
 371         return count;
 372 }
 373
 374 static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
 375                 qeth_l3_dev_sniffer_store);
 376
 377 static ssize_t qeth_l3_dev_large_send_show(struct device *dev,
 378                                 struct device_attribute *attr, char *buf)
 379 {
 380         struct qeth_card *card = dev_get_drvdata(dev);
 381
 382         if (!card)
 383                 return -EINVAL;
 384
 385         switch (card->options.large_send) {
 386         case QETH_LARGE_SEND_NO:
 387                 return sprintf(buf, "%s\n", "no");
 388         case QETH_LARGE_SEND_TSO:
 389                 return sprintf(buf, "%s\n", "TSO");
 390         default:
 391                 return sprintf(buf, "%s\n", "N/A");
 392         }
 393 }
 394
 395 static ssize_t qeth_l3_dev_large_send_store(struct device *dev,
 396                 struct device_attribute *attr, const char *buf, size_t count)
 397 {
 398         struct qeth_card *card = dev_get_drvdata(dev);
 399         enum qeth_large_send_types type;
 400         int rc = 0;
 401         char *tmp;
 402
 403         if (!card)
 404                 return -EINVAL;
 405         tmp = strsep((char **) &buf, "\n");
 406         if (!strcmp(tmp, "no"))
 407                 type = QETH_LARGE_SEND_NO;
 408         else if (!strcmp(tmp, "TSO"))
 409                 type = QETH_LARGE_SEND_TSO;
 410         else
 411                 return -EINVAL;
 412
 413         if (card->options.large_send == type)
 414                 return count;
 415         rc = qeth_l3_set_large_send(card, type);
 416         if (rc)
 417                 return rc;
 418         return count;
 419 }
 420
 421 static DEVICE_ATTR(large_send, 0644, qeth_l3_dev_large_send_show,
 422                    qeth_l3_dev_large_send_store);
 423
 424 static struct attribute *qeth_l3_device_attrs[] = {
 425         &dev_attr_route4.attr,
 426         &dev_attr_route6.attr,
 427         &dev_attr_fake_broadcast.attr,
 428         &dev_attr_broadcast_mode.attr,
 429         &dev_attr_canonical_macaddr.attr,
 430         &dev_attr_checksumming.attr,
 431         &dev_attr_sniffer.attr,
 432         &dev_attr_large_send.attr,
 433         NULL,
 434 };
 435
 436 static struct attribute_group qeth_l3_device_attr_group = {
 437         .attrs = qeth_l3_device_attrs,
 438 };
 439
 440 static ssize_t qeth_l3_dev_ipato_enable_show(struct device *dev,
 441                         struct device_attribute *attr, char *buf)
 442 {
 443         struct qeth_card *card = dev_get_drvdata(dev);
 444
 445         if (!card)
 446                 return -EINVAL;
 447
 448         return sprintf(buf, "%i\n", card->ipato.enabled? 1:0);
 449 }
 450
 451 static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev,
 452                 struct device_attribute *attr, const char *buf, size_t count)
 453 {
 454         struct qeth_card *card = dev_get_drvdata(dev);
 455         char *tmp;
 456
 457         if (!card)
 458                 return -EINVAL;
 459
 460         if ((card->state != CARD_STATE_DOWN) &&
 461             (card->state != CARD_STATE_RECOVER))
 462                 return -EPERM;
 463
 464         tmp = strsep((char **) &buf, "\n");
 465         if (!strcmp(tmp, "toggle")) {
 466                 card->ipato.enabled = (card->ipato.enabled)? 0 : 1;
 467         } else if (!strcmp(tmp, "1")) {
 468                 card->ipato.enabled = 1;
 469         } else if (!strcmp(tmp, "0")) {
 470                 card->ipato.enabled = 0;
 471         } else {
 472                 return -EINVAL;
 473         }
 474         return count;
 475 }
 476
 477 static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
 478                         qeth_l3_dev_ipato_enable_show,
 479                         qeth_l3_dev_ipato_enable_store);
 480
 481 static ssize_t qeth_l3_dev_ipato_invert4_show(struct device *dev,
 482                                 struct device_attribute *attr, char *buf)
 483 {
 484         struct qeth_card *card = dev_get_drvdata(dev);
 485
 486         if (!card)
 487                 return -EINVAL;
 488
 489         return sprintf(buf, "%i\n", card->ipato.invert4? 1:0);
 490 }
 491
 492 static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev,
 493                                 struct device_attribute *attr,
 494                                 const char *buf, size_t count)
 495 {
 496         struct qeth_card *card = dev_get_drvdata(dev);
 497         char *tmp;
 498
 499         if (!card)
 500                 return -EINVAL;
 501
 502         tmp = strsep((char **) &buf, "\n");
 503         if (!strcmp(tmp, "toggle")) {
 504                 card->ipato.invert4 = (card->ipato.invert4)? 0 : 1;
 505         } else if (!strcmp(tmp, "1")) {
 506                 card->ipato.invert4 = 1;
 507         } else if (!strcmp(tmp, "0")) {
 508                 card->ipato.invert4 = 0;
 509         } else {
 510                 return -EINVAL;
 511         }
 512         return count;
 513 }
 514
 515 static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
 516                         qeth_l3_dev_ipato_invert4_show,
 517                         qeth_l3_dev_ipato_invert4_store);
 518
 519 static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
 520                         enum qeth_prot_versions proto)
 521 {
 522         struct qeth_ipato_entry *ipatoe;
 523         unsigned long flags;
 524         char addr_str[40];
 525         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 526         int i = 0;
 527
 528         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 529         /* add strlen for "/<mask>\n" */
 530         entry_len += (proto == QETH_PROT_IPV4)? 5 : 6;
 531         spin_lock_irqsave(&card->ip_lock, flags);
 532         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 533                 if (ipatoe->proto != proto)
 534                         continue;
 535                 /* String must not be longer than PAGE_SIZE. So we check if
 536                  * string length gets near PAGE_SIZE. Then we can savely display
 537                  * the next IPv6 address (worst case, compared to IPv4) */
 538                 if ((PAGE_SIZE - i) <= entry_len)
 539                         break;
 540                 qeth_l3_ipaddr_to_string(proto, ipatoe->addr, addr_str);
 541                 i += snprintf(buf + i, PAGE_SIZE - i,
 542                               "%s/%i\n", addr_str, ipatoe->mask_bits);
 543         }
 544         spin_unlock_irqrestore(&card->ip_lock, flags);
 545         i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 546
 547         return i;
 548 }
 549
 550 static ssize_t qeth_l3_dev_ipato_add4_show(struct device *dev,
 551                                 struct device_attribute *attr, char *buf)
 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_show(buf, card, QETH_PROT_IPV4);
 559 }
 560
 561 static int qeth_l3_parse_ipatoe(const char *buf, enum qeth_prot_versions proto,
 562                   u8 *addr, int *mask_bits)
 563 {
 564         const char *start, *end;
 565         char *tmp;
 566         char buffer[40] = {0, };
 567
 568         start = buf;
 569         /* get address string */
 570         end = strchr(start, '/');
 571         if (!end || (end - start >= 40)) {
 572                 return -EINVAL;
 573         }
 574         strncpy(buffer, start, end - start);
 575         if (qeth_l3_string_to_ipaddr(buffer, proto, addr)) {
 576                 return -EINVAL;
 577         }
 578         start = end + 1;
 579         *mask_bits = simple_strtoul(start, &tmp, 10);
 580         if (!strlen(start) ||
 581             (tmp == start) ||
 582             (*mask_bits > ((proto == QETH_PROT_IPV4) ? 32 : 128))) {
 583                 return -EINVAL;
 584         }
 585         return 0;
 586 }
 587
 588 static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
 589                          struct qeth_card *card, enum qeth_prot_versions proto)
 590 {
 591         struct qeth_ipato_entry *ipatoe;
 592         u8 addr[16];
 593         int mask_bits;
 594         int rc;
 595
 596         rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
 597         if (rc)
 598                 return rc;
 599
 600         ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
 601         if (!ipatoe) {
 602                 return -ENOMEM;
 603         }
 604         ipatoe->proto = proto;
 605         memcpy(ipatoe->addr, addr, (proto == QETH_PROT_IPV4)? 4:16);
 606         ipatoe->mask_bits = mask_bits;
 607
 608         rc = qeth_l3_add_ipato_entry(card, ipatoe);
 609         if (rc) {
 610                 kfree(ipatoe);
 611                 return rc;
 612         }
 613
 614         return count;
 615 }
 616
 617 static ssize_t qeth_l3_dev_ipato_add4_store(struct device *dev,
 618                 struct device_attribute *attr, const char *buf, size_t count)
 619 {
 620         struct qeth_card *card = dev_get_drvdata(dev);
 621
 622         if (!card)
 623                 return -EINVAL;
 624
 625         return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV4);
 626 }
 627
 628 static QETH_DEVICE_ATTR(ipato_add4, add4, 0644,
 629                         qeth_l3_dev_ipato_add4_show,
 630                         qeth_l3_dev_ipato_add4_store);
 631
 632 static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
 633                          struct qeth_card *card, enum qeth_prot_versions proto)
 634 {
 635         u8 addr[16];
 636         int mask_bits;
 637         int rc;
 638
 639         rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
 640         if (rc)
 641                 return rc;
 642
 643         qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
 644
 645         return count;
 646 }
 647
 648 static ssize_t qeth_l3_dev_ipato_del4_store(struct device *dev,
 649                 struct device_attribute *attr, const char *buf, size_t count)
 650 {
 651         struct qeth_card *card = dev_get_drvdata(dev);
 652
 653         if (!card)
 654                 return -EINVAL;
 655
 656         return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV4);
 657 }
 658
 659 static QETH_DEVICE_ATTR(ipato_del4, del4, 0200, NULL,
 660                         qeth_l3_dev_ipato_del4_store);
 661
 662 static ssize_t qeth_l3_dev_ipato_invert6_show(struct device *dev,
 663                 struct device_attribute *attr, char *buf)
 664 {
 665         struct qeth_card *card = dev_get_drvdata(dev);
 666
 667         if (!card)
 668                 return -EINVAL;
 669
 670         return sprintf(buf, "%i\n", card->ipato.invert6? 1:0);
 671 }
 672
 673 static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev,
 674                 struct device_attribute *attr, const char *buf, size_t count)
 675 {
 676         struct qeth_card *card = dev_get_drvdata(dev);
 677         char *tmp;
 678
 679         if (!card)
 680                 return -EINVAL;
 681
 682         tmp = strsep((char **) &buf, "\n");
 683         if (!strcmp(tmp, "toggle")) {
 684                 card->ipato.invert6 = (card->ipato.invert6)? 0 : 1;
 685         } else if (!strcmp(tmp, "1")) {
 686                 card->ipato.invert6 = 1;
 687         } else if (!strcmp(tmp, "0")) {
 688                 card->ipato.invert6 = 0;
 689         } else {
 690                 return -EINVAL;
 691         }
 692         return count;
 693 }
 694
 695 static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
 696                         qeth_l3_dev_ipato_invert6_show,
 697                         qeth_l3_dev_ipato_invert6_store);
 698
 699
 700 static ssize_t qeth_l3_dev_ipato_add6_show(struct device *dev,
 701                                 struct device_attribute *attr, char *buf)
 702 {
 703         struct qeth_card *card = dev_get_drvdata(dev);
 704
 705         if (!card)
 706                 return -EINVAL;
 707
 708         return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV6);
 709 }
 710
 711 static ssize_t qeth_l3_dev_ipato_add6_store(struct device *dev,
 712                 struct device_attribute *attr, const char *buf, size_t count)
 713 {
 714         struct qeth_card *card = dev_get_drvdata(dev);
 715
 716         if (!card)
 717                 return -EINVAL;
 718
 719         return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV6);
 720 }
 721
 722 static QETH_DEVICE_ATTR(ipato_add6, add6, 0644,
 723                         qeth_l3_dev_ipato_add6_show,
 724                         qeth_l3_dev_ipato_add6_store);
 725
 726 static ssize_t qeth_l3_dev_ipato_del6_store(struct device *dev,
 727                 struct device_attribute *attr, const char *buf, size_t count)
 728 {
 729         struct qeth_card *card = dev_get_drvdata(dev);
 730
 731         if (!card)
 732                 return -EINVAL;
 733
 734         return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV6);
 735 }
 736
 737 static QETH_DEVICE_ATTR(ipato_del6, del6, 0200, NULL,
 738                         qeth_l3_dev_ipato_del6_store);
 739
 740 static struct attribute *qeth_ipato_device_attrs[] = {
 741         &dev_attr_ipato_enable.attr,
 742         &dev_attr_ipato_invert4.attr,
 743         &dev_attr_ipato_add4.attr,
 744         &dev_attr_ipato_del4.attr,
 745         &dev_attr_ipato_invert6.attr,
 746         &dev_attr_ipato_add6.attr,
 747         &dev_attr_ipato_del6.attr,
 748         NULL,
 749 };
 750
 751 static struct attribute_group qeth_device_ipato_group = {
 752         .name = "ipa_takeover",
 753         .attrs = qeth_ipato_device_attrs,
 754 };
 755
 756 static ssize_t qeth_l3_dev_vipa_add_show(char *buf, struct qeth_card *card,
 757                         enum qeth_prot_versions proto)
 758 {
 759         struct qeth_ipaddr *ipaddr;
 760         char addr_str[40];
 761         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 762         unsigned long flags;
 763         int i = 0;
 764
 765         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 766         entry_len += 2; /* \n + terminator */
 767         spin_lock_irqsave(&card->ip_lock, flags);
 768         list_for_each_entry(ipaddr, &card->ip_list, entry) {
 769                 if (ipaddr->proto != proto)
 770                         continue;
 771                 if (ipaddr->type != QETH_IP_TYPE_VIPA)
 772                         continue;
 773                 /* String must not be longer than PAGE_SIZE. So we check if
 774                  * string length gets near PAGE_SIZE. Then we can savely display
 775                  * the next IPv6 address (worst case, compared to IPv4) */
 776                 if ((PAGE_SIZE - i) <= entry_len)
 777                         break;
 778                 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
 779                         addr_str);
 780                 i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
 781         }
 782         spin_unlock_irqrestore(&card->ip_lock, flags);
 783         i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 784
 785         return i;
 786 }
 787
 788 static ssize_t qeth_l3_dev_vipa_add4_show(struct device *dev,
 789                         struct device_attribute *attr, char *buf)
 790 {
 791         struct qeth_card *card = dev_get_drvdata(dev);
 792
 793         if (!card)
 794                 return -EINVAL;
 795
 796         return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV4);
 797 }
 798
 799 static int qeth_l3_parse_vipae(const char *buf, enum qeth_prot_versions proto,
 800                  u8 *addr)
 801 {
 802         if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
 803                 return -EINVAL;
 804         }
 805         return 0;
 806 }
 807
 808 static ssize_t qeth_l3_dev_vipa_add_store(const char *buf, size_t count,
 809                         struct qeth_card *card, enum qeth_prot_versions proto)
 810 {
 811         u8 addr[16] = {0, };
 812         int rc;
 813
 814         rc = qeth_l3_parse_vipae(buf, proto, addr);
 815         if (rc)
 816                 return rc;
 817
 818         rc = qeth_l3_add_vipa(card, proto, addr);
 819         if (rc)
 820                 return rc;
 821
 822         return count;
 823 }
 824
 825 static ssize_t qeth_l3_dev_vipa_add4_store(struct device *dev,
 826                 struct device_attribute *attr, const char *buf, size_t count)
 827 {
 828         struct qeth_card *card = dev_get_drvdata(dev);
 829
 830         if (!card)
 831                 return -EINVAL;
 832
 833         return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV4);
 834 }
 835
 836 static QETH_DEVICE_ATTR(vipa_add4, add4, 0644,
 837                         qeth_l3_dev_vipa_add4_show,
 838                         qeth_l3_dev_vipa_add4_store);
 839
 840 static ssize_t qeth_l3_dev_vipa_del_store(const char *buf, size_t count,
 841                          struct qeth_card *card, enum qeth_prot_versions proto)
 842 {
 843         u8 addr[16];
 844         int rc;
 845
 846         rc = qeth_l3_parse_vipae(buf, proto, addr);
 847         if (rc)
 848                 return rc;
 849
 850         qeth_l3_del_vipa(card, proto, addr);
 851
 852         return count;
 853 }
 854
 855 static ssize_t qeth_l3_dev_vipa_del4_store(struct device *dev,
 856                 struct device_attribute *attr, const char *buf, size_t count)
 857 {
 858         struct qeth_card *card = dev_get_drvdata(dev);
 859
 860         if (!card)
 861                 return -EINVAL;
 862
 863         return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV4);
 864 }
 865
 866 static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
 867                         qeth_l3_dev_vipa_del4_store);
 868
 869 static ssize_t qeth_l3_dev_vipa_add6_show(struct device *dev,
 870                                 struct device_attribute *attr, char *buf)
 871 {
 872         struct qeth_card *card = dev_get_drvdata(dev);
 873
 874         if (!card)
 875                 return -EINVAL;
 876
 877         return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV6);
 878 }
 879
 880 static ssize_t qeth_l3_dev_vipa_add6_store(struct device *dev,
 881                 struct device_attribute *attr, const char *buf, size_t count)
 882 {
 883         struct qeth_card *card = dev_get_drvdata(dev);
 884
 885         if (!card)
 886                 return -EINVAL;
 887
 888         return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV6);
 889 }
 890
 891 static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
 892                         qeth_l3_dev_vipa_add6_show,
 893                         qeth_l3_dev_vipa_add6_store);
 894
 895 static ssize_t qeth_l3_dev_vipa_del6_store(struct device *dev,
 896                 struct device_attribute *attr, const char *buf, size_t count)
 897 {
 898         struct qeth_card *card = dev_get_drvdata(dev);
 899
 900         if (!card)
 901                 return -EINVAL;
 902
 903         return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV6);
 904 }
 905
 906 static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
 907                         qeth_l3_dev_vipa_del6_store);
 908
 909 static struct attribute *qeth_vipa_device_attrs[] = {
 910         &dev_attr_vipa_add4.attr,
 911         &dev_attr_vipa_del4.attr,
 912         &dev_attr_vipa_add6.attr,
 913         &dev_attr_vipa_del6.attr,
 914         NULL,
 915 };
 916
 917 static struct attribute_group qeth_device_vipa_group = {
 918         .name = "vipa",
 919         .attrs = qeth_vipa_device_attrs,
 920 };
 921
 922 static ssize_t qeth_l3_dev_rxip_add_show(char *buf, struct qeth_card *card,
 923                        enum qeth_prot_versions proto)
 924 {
 925         struct qeth_ipaddr *ipaddr;
 926         char addr_str[40];
 927         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 928         unsigned long flags;
 929         int i = 0;
 930
 931         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 932         entry_len += 2; /* \n + terminator */
 933         spin_lock_irqsave(&card->ip_lock, flags);
 934         list_for_each_entry(ipaddr, &card->ip_list, entry) {
 935                 if (ipaddr->proto != proto)
 936                         continue;
 937                 if (ipaddr->type != QETH_IP_TYPE_RXIP)
 938                         continue;
 939                 /* String must not be longer than PAGE_SIZE. So we check if
 940                  * string length gets near PAGE_SIZE. Then we can savely display
 941                  * the next IPv6 address (worst case, compared to IPv4) */
 942                 if ((PAGE_SIZE - i) <= entry_len)
 943                         break;
 944                 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
 945                         addr_str);
 946                 i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
 947         }
 948         spin_unlock_irqrestore(&card->ip_lock, flags);
 949         i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 950
 951         return i;
 952 }
 953
 954 static ssize_t qeth_l3_dev_rxip_add4_show(struct device *dev,
 955                         struct device_attribute *attr, char *buf)
 956 {
 957         struct qeth_card *card = dev_get_drvdata(dev);
 958
 959         if (!card)
 960                 return -EINVAL;
 961
 962         return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV4);
 963 }
 964
 965 static int qeth_l3_parse_rxipe(const char *buf, enum qeth_prot_versions proto,
 966                  u8 *addr)
 967 {
 968         if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
 969                 return -EINVAL;
 970         }
 971         return 0;
 972 }
 973
 974 static ssize_t qeth_l3_dev_rxip_add_store(const char *buf, size_t count,
 975                         struct qeth_card *card, enum qeth_prot_versions proto)
 976 {
 977         u8 addr[16] = {0, };
 978         int rc;
 979
 980         rc = qeth_l3_parse_rxipe(buf, proto, addr);
 981         if (rc)
 982                 return rc;
 983
 984         rc = qeth_l3_add_rxip(card, proto, addr);
 985         if (rc)
 986                 return rc;
 987
 988         return count;
 989 }
 990
 991 static ssize_t qeth_l3_dev_rxip_add4_store(struct device *dev,
 992                 struct device_attribute *attr, const char *buf, size_t count)
 993 {
 994         struct qeth_card *card = dev_get_drvdata(dev);
 995
 996         if (!card)
 997                 return -EINVAL;
 998
 999         return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV4);
1000 }
1001
1002 static QETH_DEVICE_ATTR(rxip_add4, add4, 0644,
1003                         qeth_l3_dev_rxip_add4_show,
1004                         qeth_l3_dev_rxip_add4_store);
1005
1006 static ssize_t qeth_l3_dev_rxip_del_store(const char *buf, size_t count,
1007                         struct qeth_card *card, enum qeth_prot_versions proto)
1008 {
1009         u8 addr[16];
1010         int rc;
1011
1012         rc = qeth_l3_parse_rxipe(buf, proto, addr);
1013         if (rc)
1014                 return rc;
1015
1016         qeth_l3_del_rxip(card, proto, addr);
1017
1018         return count;
1019 }
1020
1021 static ssize_t qeth_l3_dev_rxip_del4_store(struct device *dev,
1022                 struct device_attribute *attr, const char *buf, size_t count)
1023 {
1024         struct qeth_card *card = dev_get_drvdata(dev);
1025
1026         if (!card)
1027                 return -EINVAL;
1028
1029         return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV4);
1030 }
1031
1032 static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
1033                         qeth_l3_dev_rxip_del4_store);
1034
1035 static ssize_t qeth_l3_dev_rxip_add6_show(struct device *dev,
1036                 struct device_attribute *attr, char *buf)
1037 {
1038         struct qeth_card *card = dev_get_drvdata(dev);
1039
1040         if (!card)
1041                 return -EINVAL;
1042
1043         return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV6);
1044 }
1045
1046 static ssize_t qeth_l3_dev_rxip_add6_store(struct device *dev,
1047                 struct device_attribute *attr, const char *buf, size_t count)
1048 {
1049         struct qeth_card *card = dev_get_drvdata(dev);
1050
1051         if (!card)
1052                 return -EINVAL;
1053
1054         return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV6);
1055 }
1056
1057 static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
1058                         qeth_l3_dev_rxip_add6_show,
1059                         qeth_l3_dev_rxip_add6_store);
1060
1061 static ssize_t qeth_l3_dev_rxip_del6_store(struct device *dev,
1062                 struct device_attribute *attr, const char *buf, size_t count)
1063 {
1064         struct qeth_card *card = dev_get_drvdata(dev);
1065
1066         if (!card)
1067                 return -EINVAL;
1068
1069         return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV6);
1070 }
1071
1072 static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,
1073                         qeth_l3_dev_rxip_del6_store);
1074
1075 static struct attribute *qeth_rxip_device_attrs[] = {
1076         &dev_attr_rxip_add4.attr,
1077         &dev_attr_rxip_del4.attr,
1078         &dev_attr_rxip_add6.attr,
1079         &dev_attr_rxip_del6.attr,
1080         NULL,
1081 };
1082
1083 static struct attribute_group qeth_device_rxip_group = {
1084         .name = "rxip",
1085         .attrs = qeth_rxip_device_attrs,
1086 };
1087
1088 int qeth_l3_create_device_attributes(struct device *dev)
1089 {
1090         int ret;
1091
1092         ret = sysfs_create_group(&dev->kobj, &qeth_l3_device_attr_group);
1093         if (ret)
1094                 return ret;
1095
1096         ret = sysfs_create_group(&dev->kobj, &qeth_device_ipato_group);
1097         if (ret) {
1098                 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1099                 return ret;
1100         }
1101
1102         ret = sysfs_create_group(&dev->kobj, &qeth_device_vipa_group);
1103         if (ret) {
1104                 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1105                 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1106                 return ret;
1107         }
1108
1109         ret = sysfs_create_group(&dev->kobj, &qeth_device_rxip_group);
1110         if (ret) {
1111                 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1112                 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1113                 sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1114                 return ret;
1115         }
1116         return 0;
1117 }
1118
1119 void qeth_l3_remove_device_attributes(struct device *dev)
1120 {
1121         sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1122         sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1123         sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1124         sysfs_remove_group(&dev->kobj, &qeth_device_rxip_group);
1125 }