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   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 <linux/slab.h>
  12
  13 #include "qeth_l3.h"
  14
  15 #define QETH_DEVICE_ATTR(_id, _name, _mode, _show, _store) \
  16 struct device_attribute dev_attr_##_id = __ATTR(_name, _mode, _show, _store)
  17
  18 static const char *qeth_l3_get_checksum_str(struct qeth_card *card)
  19 {
  20         if (card->options.checksum_type == SW_CHECKSUMMING)
  21                 return "sw";
  22         else if (card->options.checksum_type == HW_CHECKSUMMING)
  23                 return "hw";
  24         else
  25                 return "no";
  26 }
  27
  28 static ssize_t qeth_l3_dev_route_show(struct qeth_card *card,
  29                         struct qeth_routing_info *route, char *buf)
  30 {
  31         switch (route->type) {
  32         case PRIMARY_ROUTER:
  33                 return sprintf(buf, "%s\n", "primary router");
  34         case SECONDARY_ROUTER:
  35                 return sprintf(buf, "%s\n", "secondary router");
  36         case MULTICAST_ROUTER:
  37                 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
  38                         return sprintf(buf, "%s\n", "multicast router+");
  39                 else
  40                         return sprintf(buf, "%s\n", "multicast router");
  41         case PRIMARY_CONNECTOR:
  42                 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
  43                         return sprintf(buf, "%s\n", "primary connector+");
  44                 else
  45                         return sprintf(buf, "%s\n", "primary connector");
  46         case SECONDARY_CONNECTOR:
  47                 if (card->info.broadcast_capable == QETH_BROADCAST_WITHOUT_ECHO)
  48                         return sprintf(buf, "%s\n", "secondary connector+");
  49                 else
  50                         return sprintf(buf, "%s\n", "secondary connector");
  51         default:
  52                 return sprintf(buf, "%s\n", "no");
  53         }
  54 }
  55
  56 static ssize_t qeth_l3_dev_route4_show(struct device *dev,
  57                         struct device_attribute *attr, char *buf)
  58 {
  59         struct qeth_card *card = dev_get_drvdata(dev);
  60
  61         if (!card)
  62                 return -EINVAL;
  63
  64         return qeth_l3_dev_route_show(card, &card->options.route4, buf);
  65 }
  66
  67 static ssize_t qeth_l3_dev_route_store(struct qeth_card *card,
  68                 struct qeth_routing_info *route, enum qeth_prot_versions prot,
  69                 const char *buf, size_t count)
  70 {
  71         enum qeth_routing_types old_route_type = route->type;
  72         char *tmp;
  73         int rc = 0;
  74
  75         tmp = strsep((char **) &buf, "\n");
  76         mutex_lock(&card->conf_mutex);
  77         if (!strcmp(tmp, "no_router")) {
  78                 route->type = NO_ROUTER;
  79         } else if (!strcmp(tmp, "primary_connector")) {
  80                 route->type = PRIMARY_CONNECTOR;
  81         } else if (!strcmp(tmp, "secondary_connector")) {
  82                 route->type = SECONDARY_CONNECTOR;
  83         } else if (!strcmp(tmp, "primary_router")) {
  84                 route->type = PRIMARY_ROUTER;
  85         } else if (!strcmp(tmp, "secondary_router")) {
  86                 route->type = SECONDARY_ROUTER;
  87         } else if (!strcmp(tmp, "multicast_router")) {
  88                 route->type = MULTICAST_ROUTER;
  89         } else {
  90                 rc = -EINVAL;
  91                 goto out;
  92         }
  93         if (((card->state == CARD_STATE_SOFTSETUP) ||
  94              (card->state == CARD_STATE_UP)) &&
  95             (old_route_type != route->type)) {
  96                 if (prot == QETH_PROT_IPV4)
  97                         rc = qeth_l3_setrouting_v4(card);
  98                 else if (prot == QETH_PROT_IPV6)
  99                         rc = qeth_l3_setrouting_v6(card);
 100         }
 101 out:
 102         mutex_unlock(&card->conf_mutex);
 103         return rc ? rc : count;
 104 }
 105
 106 static ssize_t qeth_l3_dev_route4_store(struct device *dev,
 107                 struct device_attribute *attr, const char *buf, size_t count)
 108 {
 109         struct qeth_card *card = dev_get_drvdata(dev);
 110
 111         if (!card)
 112                 return -EINVAL;
 113
 114         return qeth_l3_dev_route_store(card, &card->options.route4,
 115                                 QETH_PROT_IPV4, buf, count);
 116 }
 117
 118 static DEVICE_ATTR(route4, 0644, qeth_l3_dev_route4_show,
 119                         qeth_l3_dev_route4_store);
 120
 121 static ssize_t qeth_l3_dev_route6_show(struct device *dev,
 122                         struct device_attribute *attr, char *buf)
 123 {
 124         struct qeth_card *card = dev_get_drvdata(dev);
 125
 126         if (!card)
 127                 return -EINVAL;
 128
 129         return qeth_l3_dev_route_show(card, &card->options.route6, buf);
 130 }
 131
 132 static ssize_t qeth_l3_dev_route6_store(struct device *dev,
 133                 struct device_attribute *attr, const char *buf, size_t count)
 134 {
 135         struct qeth_card *card = dev_get_drvdata(dev);
 136
 137         if (!card)
 138                 return -EINVAL;
 139
 140         return qeth_l3_dev_route_store(card, &card->options.route6,
 141                                 QETH_PROT_IPV6, buf, count);
 142 }
 143
 144 static DEVICE_ATTR(route6, 0644, qeth_l3_dev_route6_show,
 145                         qeth_l3_dev_route6_store);
 146
 147 static ssize_t qeth_l3_dev_fake_broadcast_show(struct device *dev,
 148                         struct device_attribute *attr, char *buf)
 149 {
 150         struct qeth_card *card = dev_get_drvdata(dev);
 151
 152         if (!card)
 153                 return -EINVAL;
 154
 155         return sprintf(buf, "%i\n", card->options.fake_broadcast? 1:0);
 156 }
 157
 158 static ssize_t qeth_l3_dev_fake_broadcast_store(struct device *dev,
 159                 struct device_attribute *attr, const char *buf, size_t count)
 160 {
 161         struct qeth_card *card = dev_get_drvdata(dev);
 162         char *tmp;
 163         int i, rc = 0;
 164
 165         if (!card)
 166                 return -EINVAL;
 167
 168         mutex_lock(&card->conf_mutex);
 169         if ((card->state != CARD_STATE_DOWN) &&
 170             (card->state != CARD_STATE_RECOVER)) {
 171                 rc = -EPERM;
 172                 goto out;
 173         }
 174
 175         i = simple_strtoul(buf, &tmp, 16);
 176         if ((i == 0) || (i == 1))
 177                 card->options.fake_broadcast = i;
 178         else
 179                 rc = -EINVAL;
 180 out:
 181         mutex_unlock(&card->conf_mutex);
 182         return rc ? rc : count;
 183 }
 184
 185 static DEVICE_ATTR(fake_broadcast, 0644, qeth_l3_dev_fake_broadcast_show,
 186                    qeth_l3_dev_fake_broadcast_store);
 187
 188 static ssize_t qeth_l3_dev_broadcast_mode_show(struct device *dev,
 189                                 struct device_attribute *attr, char *buf)
 190 {
 191         struct qeth_card *card = dev_get_drvdata(dev);
 192
 193         if (!card)
 194                 return -EINVAL;
 195
 196         if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
 197               (card->info.link_type == QETH_LINK_TYPE_LANE_TR)))
 198                 return sprintf(buf, "n/a\n");
 199
 200         return sprintf(buf, "%s\n", (card->options.broadcast_mode ==
 201                                      QETH_TR_BROADCAST_ALLRINGS)?
 202                        "all rings":"local");
 203 }
 204
 205 static ssize_t qeth_l3_dev_broadcast_mode_store(struct device *dev,
 206                 struct device_attribute *attr, const char *buf, size_t count)
 207 {
 208         struct qeth_card *card = dev_get_drvdata(dev);
 209         char *tmp;
 210         int rc = 0;
 211
 212         if (!card)
 213                 return -EINVAL;
 214
 215         mutex_lock(&card->conf_mutex);
 216         if ((card->state != CARD_STATE_DOWN) &&
 217             (card->state != CARD_STATE_RECOVER)) {
 218                 rc = -EPERM;
 219                 goto out;
 220         }
 221
 222         if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
 223               (card->info.link_type == QETH_LINK_TYPE_LANE_TR))) {
 224                 rc = -EINVAL;
 225                 goto out;
 226         }
 227
 228         tmp = strsep((char **) &buf, "\n");
 229
 230         if (!strcmp(tmp, "local"))
 231                 card->options.broadcast_mode = QETH_TR_BROADCAST_LOCAL;
 232         else if (!strcmp(tmp, "all_rings"))
 233                 card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS;
 234         else
 235                 rc = -EINVAL;
 236 out:
 237         mutex_unlock(&card->conf_mutex);
 238         return rc ? rc : count;
 239 }
 240
 241 static DEVICE_ATTR(broadcast_mode, 0644, qeth_l3_dev_broadcast_mode_show,
 242                    qeth_l3_dev_broadcast_mode_store);
 243
 244 static ssize_t qeth_l3_dev_canonical_macaddr_show(struct device *dev,
 245                                 struct device_attribute *attr, char *buf)
 246 {
 247         struct qeth_card *card = dev_get_drvdata(dev);
 248
 249         if (!card)
 250                 return -EINVAL;
 251
 252         if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
 253               (card->info.link_type == QETH_LINK_TYPE_LANE_TR)))
 254                 return sprintf(buf, "n/a\n");
 255
 256         return sprintf(buf, "%i\n", (card->options.macaddr_mode ==
 257                                      QETH_TR_MACADDR_CANONICAL)? 1:0);
 258 }
 259
 260 static ssize_t qeth_l3_dev_canonical_macaddr_store(struct device *dev,
 261                 struct device_attribute *attr, const char *buf, size_t count)
 262 {
 263         struct qeth_card *card = dev_get_drvdata(dev);
 264         char *tmp;
 265         int i, rc = 0;
 266
 267         if (!card)
 268                 return -EINVAL;
 269
 270         mutex_lock(&card->conf_mutex);
 271         if ((card->state != CARD_STATE_DOWN) &&
 272             (card->state != CARD_STATE_RECOVER)) {
 273                 rc = -EPERM;
 274                 goto out;
 275         }
 276
 277         if (!((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
 278               (card->info.link_type == QETH_LINK_TYPE_LANE_TR))) {
 279                 rc = -EINVAL;
 280                 goto out;
 281         }
 282
 283         i = simple_strtoul(buf, &tmp, 16);
 284         if ((i == 0) || (i == 1))
 285                 card->options.macaddr_mode = i?
 286                         QETH_TR_MACADDR_CANONICAL :
 287                         QETH_TR_MACADDR_NONCANONICAL;
 288         else
 289                 rc = -EINVAL;
 290 out:
 291         mutex_unlock(&card->conf_mutex);
 292         return rc ? rc : count;
 293 }
 294
 295 static DEVICE_ATTR(canonical_macaddr, 0644, qeth_l3_dev_canonical_macaddr_show,
 296                    qeth_l3_dev_canonical_macaddr_store);
 297
 298 static ssize_t qeth_l3_dev_checksum_show(struct device *dev,
 299                         struct device_attribute *attr, char *buf)
 300 {
 301         struct qeth_card *card = dev_get_drvdata(dev);
 302
 303         if (!card)
 304                 return -EINVAL;
 305
 306         return sprintf(buf, "%s checksumming\n",
 307                         qeth_l3_get_checksum_str(card));
 308 }
 309
 310 static ssize_t qeth_l3_dev_checksum_store(struct device *dev,
 311                 struct device_attribute *attr, const char *buf, size_t count)
 312 {
 313         struct qeth_card *card = dev_get_drvdata(dev);
 314         enum qeth_checksum_types csum_type;
 315         char *tmp;
 316         int rc = 0;
 317
 318         if (!card)
 319                 return -EINVAL;
 320
 321         mutex_lock(&card->conf_mutex);
 322         tmp = strsep((char **) &buf, "\n");
 323         if (!strcmp(tmp, "sw_checksumming"))
 324                 csum_type = SW_CHECKSUMMING;
 325         else if (!strcmp(tmp, "hw_checksumming"))
 326                 csum_type = HW_CHECKSUMMING;
 327         else if (!strcmp(tmp, "no_checksumming"))
 328                 csum_type = NO_CHECKSUMMING;
 329         else {
 330                 rc = -EINVAL;
 331                 goto out;
 332         }
 333
 334         rc = qeth_l3_set_rx_csum(card, csum_type);
 335 out:
 336         mutex_unlock(&card->conf_mutex);
 337         return rc ? rc : count;
 338 }
 339
 340 static DEVICE_ATTR(checksumming, 0644, qeth_l3_dev_checksum_show,
 341                 qeth_l3_dev_checksum_store);
 342
 343 static ssize_t qeth_l3_dev_sniffer_show(struct device *dev,
 344                 struct device_attribute *attr, char *buf)
 345 {
 346         struct qeth_card *card = dev_get_drvdata(dev);
 347
 348         if (!card)
 349                 return -EINVAL;
 350
 351         return sprintf(buf, "%i\n", card->options.sniffer ? 1 : 0);
 352 }
 353
 354 static ssize_t qeth_l3_dev_sniffer_store(struct device *dev,
 355                 struct device_attribute *attr, const char *buf, size_t count)
 356 {
 357         struct qeth_card *card = dev_get_drvdata(dev);
 358         int rc = 0;
 359         unsigned long i;
 360
 361         if (!card)
 362                 return -EINVAL;
 363
 364         if (card->info.type != QETH_CARD_TYPE_IQD)
 365                 return -EPERM;
 366
 367         mutex_lock(&card->conf_mutex);
 368         if ((card->state != CARD_STATE_DOWN) &&
 369             (card->state != CARD_STATE_RECOVER)) {
 370                 rc = -EPERM;
 371                 goto out;
 372         }
 373
 374         rc = strict_strtoul(buf, 16, &i);
 375         if (rc) {
 376                 rc = -EINVAL;
 377                 goto out;
 378         }
 379         switch (i) {
 380         case 0:
 381                 card->options.sniffer = i;
 382                 break;
 383         case 1:
 384                 qdio_get_ssqd_desc(CARD_DDEV(card), &card->ssqd);
 385                 if (card->ssqd.qdioac2 & QETH_SNIFF_AVAIL) {
 386                         card->options.sniffer = i;
 387                         if (card->qdio.init_pool.buf_count !=
 388                                         QETH_IN_BUF_COUNT_MAX)
 389                                 qeth_realloc_buffer_pool(card,
 390                                         QETH_IN_BUF_COUNT_MAX);
 391                         break;
 392                 } else
 393                         rc = -EPERM;
 394         default:   /* fall through */
 395                 rc = -EINVAL;
 396         }
 397 out:
 398         mutex_unlock(&card->conf_mutex);
 399         return rc ? rc : count;
 400 }
 401
 402 static DEVICE_ATTR(sniffer, 0644, qeth_l3_dev_sniffer_show,
 403                 qeth_l3_dev_sniffer_store);
 404
 405 static ssize_t qeth_l3_dev_large_send_show(struct device *dev,
 406                                 struct device_attribute *attr, char *buf)
 407 {
 408         struct qeth_card *card = dev_get_drvdata(dev);
 409
 410         if (!card)
 411                 return -EINVAL;
 412
 413         switch (card->options.large_send) {
 414         case QETH_LARGE_SEND_NO:
 415                 return sprintf(buf, "%s\n", "no");
 416         case QETH_LARGE_SEND_TSO:
 417                 return sprintf(buf, "%s\n", "TSO");
 418         default:
 419                 return sprintf(buf, "%s\n", "N/A");
 420         }
 421 }
 422
 423 static ssize_t qeth_l3_dev_large_send_store(struct device *dev,
 424                 struct device_attribute *attr, const char *buf, size_t count)
 425 {
 426         struct qeth_card *card = dev_get_drvdata(dev);
 427         enum qeth_large_send_types type;
 428         int rc = 0;
 429         char *tmp;
 430
 431         if (!card)
 432                 return -EINVAL;
 433         tmp = strsep((char **) &buf, "\n");
 434         if (!strcmp(tmp, "no"))
 435                 type = QETH_LARGE_SEND_NO;
 436         else if (!strcmp(tmp, "TSO"))
 437                 type = QETH_LARGE_SEND_TSO;
 438         else
 439                 return -EINVAL;
 440
 441         mutex_lock(&card->conf_mutex);
 442         if (card->options.large_send != type)
 443                 rc = qeth_l3_set_large_send(card, type);
 444         mutex_unlock(&card->conf_mutex);
 445         return rc ? rc : count;
 446 }
 447
 448 static DEVICE_ATTR(large_send, 0644, qeth_l3_dev_large_send_show,
 449                    qeth_l3_dev_large_send_store);
 450
 451 static struct attribute *qeth_l3_device_attrs[] = {
 452         &dev_attr_route4.attr,
 453         &dev_attr_route6.attr,
 454         &dev_attr_fake_broadcast.attr,
 455         &dev_attr_broadcast_mode.attr,
 456         &dev_attr_canonical_macaddr.attr,
 457         &dev_attr_checksumming.attr,
 458         &dev_attr_sniffer.attr,
 459         &dev_attr_large_send.attr,
 460         NULL,
 461 };
 462
 463 static struct attribute_group qeth_l3_device_attr_group = {
 464         .attrs = qeth_l3_device_attrs,
 465 };
 466
 467 static ssize_t qeth_l3_dev_ipato_enable_show(struct device *dev,
 468                         struct device_attribute *attr, char *buf)
 469 {
 470         struct qeth_card *card = dev_get_drvdata(dev);
 471
 472         if (!card)
 473                 return -EINVAL;
 474
 475         return sprintf(buf, "%i\n", card->ipato.enabled? 1:0);
 476 }
 477
 478 static ssize_t qeth_l3_dev_ipato_enable_store(struct device *dev,
 479                 struct device_attribute *attr, const char *buf, size_t count)
 480 {
 481         struct qeth_card *card = dev_get_drvdata(dev);
 482         char *tmp;
 483         int rc = 0;
 484
 485         if (!card)
 486                 return -EINVAL;
 487
 488         mutex_lock(&card->conf_mutex);
 489         if ((card->state != CARD_STATE_DOWN) &&
 490             (card->state != CARD_STATE_RECOVER)) {
 491                 rc = -EPERM;
 492                 goto out;
 493         }
 494
 495         tmp = strsep((char **) &buf, "\n");
 496         if (!strcmp(tmp, "toggle")) {
 497                 card->ipato.enabled = (card->ipato.enabled)? 0 : 1;
 498         } else if (!strcmp(tmp, "1")) {
 499                 card->ipato.enabled = 1;
 500         } else if (!strcmp(tmp, "0")) {
 501                 card->ipato.enabled = 0;
 502         } else
 503                 rc = -EINVAL;
 504 out:
 505         mutex_unlock(&card->conf_mutex);
 506         return rc ? rc : count;
 507 }
 508
 509 static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
 510                         qeth_l3_dev_ipato_enable_show,
 511                         qeth_l3_dev_ipato_enable_store);
 512
 513 static ssize_t qeth_l3_dev_ipato_invert4_show(struct device *dev,
 514                                 struct device_attribute *attr, char *buf)
 515 {
 516         struct qeth_card *card = dev_get_drvdata(dev);
 517
 518         if (!card)
 519                 return -EINVAL;
 520
 521         return sprintf(buf, "%i\n", card->ipato.invert4? 1:0);
 522 }
 523
 524 static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev,
 525                                 struct device_attribute *attr,
 526                                 const char *buf, size_t count)
 527 {
 528         struct qeth_card *card = dev_get_drvdata(dev);
 529         char *tmp;
 530         int rc = 0;
 531
 532         if (!card)
 533                 return -EINVAL;
 534
 535         mutex_lock(&card->conf_mutex);
 536         tmp = strsep((char **) &buf, "\n");
 537         if (!strcmp(tmp, "toggle")) {
 538                 card->ipato.invert4 = (card->ipato.invert4)? 0 : 1;
 539         } else if (!strcmp(tmp, "1")) {
 540                 card->ipato.invert4 = 1;
 541         } else if (!strcmp(tmp, "0")) {
 542                 card->ipato.invert4 = 0;
 543         } else
 544                 rc = -EINVAL;
 545         mutex_unlock(&card->conf_mutex);
 546         return rc ? rc : count;
 547 }
 548
 549 static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
 550                         qeth_l3_dev_ipato_invert4_show,
 551                         qeth_l3_dev_ipato_invert4_store);
 552
 553 static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
 554                         enum qeth_prot_versions proto)
 555 {
 556         struct qeth_ipato_entry *ipatoe;
 557         unsigned long flags;
 558         char addr_str[40];
 559         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 560         int i = 0;
 561
 562         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 563         /* add strlen for "/<mask>\n" */
 564         entry_len += (proto == QETH_PROT_IPV4)? 5 : 6;
 565         spin_lock_irqsave(&card->ip_lock, flags);
 566         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 567                 if (ipatoe->proto != proto)
 568                         continue;
 569                 /* String must not be longer than PAGE_SIZE. So we check if
 570                  * string length gets near PAGE_SIZE. Then we can savely display
 571                  * the next IPv6 address (worst case, compared to IPv4) */
 572                 if ((PAGE_SIZE - i) <= entry_len)
 573                         break;
 574                 qeth_l3_ipaddr_to_string(proto, ipatoe->addr, addr_str);
 575                 i += snprintf(buf + i, PAGE_SIZE - i,
 576                               "%s/%i\n", addr_str, ipatoe->mask_bits);
 577         }
 578         spin_unlock_irqrestore(&card->ip_lock, flags);
 579         i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 580
 581         return i;
 582 }
 583
 584 static ssize_t qeth_l3_dev_ipato_add4_show(struct device *dev,
 585                                 struct device_attribute *attr, char *buf)
 586 {
 587         struct qeth_card *card = dev_get_drvdata(dev);
 588
 589         if (!card)
 590                 return -EINVAL;
 591
 592         return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV4);
 593 }
 594
 595 static int qeth_l3_parse_ipatoe(const char *buf, enum qeth_prot_versions proto,
 596                   u8 *addr, int *mask_bits)
 597 {
 598         const char *start, *end;
 599         char *tmp;
 600         char buffer[40] = {0, };
 601
 602         start = buf;
 603         /* get address string */
 604         end = strchr(start, '/');
 605         if (!end || (end - start >= 40)) {
 606                 return -EINVAL;
 607         }
 608         strncpy(buffer, start, end - start);
 609         if (qeth_l3_string_to_ipaddr(buffer, proto, addr)) {
 610                 return -EINVAL;
 611         }
 612         start = end + 1;
 613         *mask_bits = simple_strtoul(start, &tmp, 10);
 614         if (!strlen(start) ||
 615             (tmp == start) ||
 616             (*mask_bits > ((proto == QETH_PROT_IPV4) ? 32 : 128))) {
 617                 return -EINVAL;
 618         }
 619         return 0;
 620 }
 621
 622 static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
 623                          struct qeth_card *card, enum qeth_prot_versions proto)
 624 {
 625         struct qeth_ipato_entry *ipatoe;
 626         u8 addr[16];
 627         int mask_bits;
 628         int rc = 0;
 629
 630         mutex_lock(&card->conf_mutex);
 631         rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
 632         if (rc)
 633                 goto out;
 634
 635         ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
 636         if (!ipatoe) {
 637                 rc = -ENOMEM;
 638                 goto out;
 639         }
 640         ipatoe->proto = proto;
 641         memcpy(ipatoe->addr, addr, (proto == QETH_PROT_IPV4)? 4:16);
 642         ipatoe->mask_bits = mask_bits;
 643
 644         rc = qeth_l3_add_ipato_entry(card, ipatoe);
 645         if (rc)
 646                 kfree(ipatoe);
 647 out:
 648         mutex_unlock(&card->conf_mutex);
 649         return rc ? rc : count;
 650 }
 651
 652 static ssize_t qeth_l3_dev_ipato_add4_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_IPV4);
 661 }
 662
 663 static QETH_DEVICE_ATTR(ipato_add4, add4, 0644,
 664                         qeth_l3_dev_ipato_add4_show,
 665                         qeth_l3_dev_ipato_add4_store);
 666
 667 static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
 668                          struct qeth_card *card, enum qeth_prot_versions proto)
 669 {
 670         u8 addr[16];
 671         int mask_bits;
 672         int rc = 0;
 673
 674         mutex_lock(&card->conf_mutex);
 675         rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
 676         if (!rc)
 677                 qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
 678         mutex_unlock(&card->conf_mutex);
 679         return rc ? rc : count;
 680 }
 681
 682 static ssize_t qeth_l3_dev_ipato_del4_store(struct device *dev,
 683                 struct device_attribute *attr, const char *buf, size_t count)
 684 {
 685         struct qeth_card *card = dev_get_drvdata(dev);
 686
 687         if (!card)
 688                 return -EINVAL;
 689
 690         return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV4);
 691 }
 692
 693 static QETH_DEVICE_ATTR(ipato_del4, del4, 0200, NULL,
 694                         qeth_l3_dev_ipato_del4_store);
 695
 696 static ssize_t qeth_l3_dev_ipato_invert6_show(struct device *dev,
 697                 struct device_attribute *attr, char *buf)
 698 {
 699         struct qeth_card *card = dev_get_drvdata(dev);
 700
 701         if (!card)
 702                 return -EINVAL;
 703
 704         return sprintf(buf, "%i\n", card->ipato.invert6? 1:0);
 705 }
 706
 707 static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev,
 708                 struct device_attribute *attr, const char *buf, size_t count)
 709 {
 710         struct qeth_card *card = dev_get_drvdata(dev);
 711         char *tmp;
 712         int rc = 0;
 713
 714         if (!card)
 715                 return -EINVAL;
 716
 717         mutex_lock(&card->conf_mutex);
 718         tmp = strsep((char **) &buf, "\n");
 719         if (!strcmp(tmp, "toggle")) {
 720                 card->ipato.invert6 = (card->ipato.invert6)? 0 : 1;
 721         } else if (!strcmp(tmp, "1")) {
 722                 card->ipato.invert6 = 1;
 723         } else if (!strcmp(tmp, "0")) {
 724                 card->ipato.invert6 = 0;
 725         } else
 726                 rc = -EINVAL;
 727         mutex_unlock(&card->conf_mutex);
 728         return rc ? rc : count;
 729 }
 730
 731 static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
 732                         qeth_l3_dev_ipato_invert6_show,
 733                         qeth_l3_dev_ipato_invert6_store);
 734
 735
 736 static ssize_t qeth_l3_dev_ipato_add6_show(struct device *dev,
 737                                 struct device_attribute *attr, char *buf)
 738 {
 739         struct qeth_card *card = dev_get_drvdata(dev);
 740
 741         if (!card)
 742                 return -EINVAL;
 743
 744         return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV6);
 745 }
 746
 747 static ssize_t qeth_l3_dev_ipato_add6_store(struct device *dev,
 748                 struct device_attribute *attr, const char *buf, size_t count)
 749 {
 750         struct qeth_card *card = dev_get_drvdata(dev);
 751
 752         if (!card)
 753                 return -EINVAL;
 754
 755         return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV6);
 756 }
 757
 758 static QETH_DEVICE_ATTR(ipato_add6, add6, 0644,
 759                         qeth_l3_dev_ipato_add6_show,
 760                         qeth_l3_dev_ipato_add6_store);
 761
 762 static ssize_t qeth_l3_dev_ipato_del6_store(struct device *dev,
 763                 struct device_attribute *attr, const char *buf, size_t count)
 764 {
 765         struct qeth_card *card = dev_get_drvdata(dev);
 766
 767         if (!card)
 768                 return -EINVAL;
 769
 770         return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV6);
 771 }
 772
 773 static QETH_DEVICE_ATTR(ipato_del6, del6, 0200, NULL,
 774                         qeth_l3_dev_ipato_del6_store);
 775
 776 static struct attribute *qeth_ipato_device_attrs[] = {
 777         &dev_attr_ipato_enable.attr,
 778         &dev_attr_ipato_invert4.attr,
 779         &dev_attr_ipato_add4.attr,
 780         &dev_attr_ipato_del4.attr,
 781         &dev_attr_ipato_invert6.attr,
 782         &dev_attr_ipato_add6.attr,
 783         &dev_attr_ipato_del6.attr,
 784         NULL,
 785 };
 786
 787 static struct attribute_group qeth_device_ipato_group = {
 788         .name = "ipa_takeover",
 789         .attrs = qeth_ipato_device_attrs,
 790 };
 791
 792 static ssize_t qeth_l3_dev_vipa_add_show(char *buf, struct qeth_card *card,
 793                         enum qeth_prot_versions proto)
 794 {
 795         struct qeth_ipaddr *ipaddr;
 796         char addr_str[40];
 797         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 798         unsigned long flags;
 799         int i = 0;
 800
 801         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 802         entry_len += 2; /* \n + terminator */
 803         spin_lock_irqsave(&card->ip_lock, flags);
 804         list_for_each_entry(ipaddr, &card->ip_list, entry) {
 805                 if (ipaddr->proto != proto)
 806                         continue;
 807                 if (ipaddr->type != QETH_IP_TYPE_VIPA)
 808                         continue;
 809                 /* String must not be longer than PAGE_SIZE. So we check if
 810                  * string length gets near PAGE_SIZE. Then we can savely display
 811                  * the next IPv6 address (worst case, compared to IPv4) */
 812                 if ((PAGE_SIZE - i) <= entry_len)
 813                         break;
 814                 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
 815                         addr_str);
 816                 i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
 817         }
 818         spin_unlock_irqrestore(&card->ip_lock, flags);
 819         i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 820
 821         return i;
 822 }
 823
 824 static ssize_t qeth_l3_dev_vipa_add4_show(struct device *dev,
 825                         struct device_attribute *attr, char *buf)
 826 {
 827         struct qeth_card *card = dev_get_drvdata(dev);
 828
 829         if (!card)
 830                 return -EINVAL;
 831
 832         return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV4);
 833 }
 834
 835 static int qeth_l3_parse_vipae(const char *buf, enum qeth_prot_versions proto,
 836                  u8 *addr)
 837 {
 838         if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
 839                 return -EINVAL;
 840         }
 841         return 0;
 842 }
 843
 844 static ssize_t qeth_l3_dev_vipa_add_store(const char *buf, size_t count,
 845                         struct qeth_card *card, enum qeth_prot_versions proto)
 846 {
 847         u8 addr[16] = {0, };
 848         int rc;
 849
 850         mutex_lock(&card->conf_mutex);
 851         rc = qeth_l3_parse_vipae(buf, proto, addr);
 852         if (!rc)
 853                 rc = qeth_l3_add_vipa(card, proto, addr);
 854         mutex_unlock(&card->conf_mutex);
 855         return rc ? rc : count;
 856 }
 857
 858 static ssize_t qeth_l3_dev_vipa_add4_store(struct device *dev,
 859                 struct device_attribute *attr, const char *buf, size_t count)
 860 {
 861         struct qeth_card *card = dev_get_drvdata(dev);
 862
 863         if (!card)
 864                 return -EINVAL;
 865
 866         return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV4);
 867 }
 868
 869 static QETH_DEVICE_ATTR(vipa_add4, add4, 0644,
 870                         qeth_l3_dev_vipa_add4_show,
 871                         qeth_l3_dev_vipa_add4_store);
 872
 873 static ssize_t qeth_l3_dev_vipa_del_store(const char *buf, size_t count,
 874                          struct qeth_card *card, enum qeth_prot_versions proto)
 875 {
 876         u8 addr[16];
 877         int rc;
 878
 879         mutex_lock(&card->conf_mutex);
 880         rc = qeth_l3_parse_vipae(buf, proto, addr);
 881         if (!rc)
 882                 qeth_l3_del_vipa(card, proto, addr);
 883         mutex_unlock(&card->conf_mutex);
 884         return rc ? rc : count;
 885 }
 886
 887 static ssize_t qeth_l3_dev_vipa_del4_store(struct device *dev,
 888                 struct device_attribute *attr, const char *buf, size_t count)
 889 {
 890         struct qeth_card *card = dev_get_drvdata(dev);
 891
 892         if (!card)
 893                 return -EINVAL;
 894
 895         return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV4);
 896 }
 897
 898 static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
 899                         qeth_l3_dev_vipa_del4_store);
 900
 901 static ssize_t qeth_l3_dev_vipa_add6_show(struct device *dev,
 902                                 struct device_attribute *attr, char *buf)
 903 {
 904         struct qeth_card *card = dev_get_drvdata(dev);
 905
 906         if (!card)
 907                 return -EINVAL;
 908
 909         return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV6);
 910 }
 911
 912 static ssize_t qeth_l3_dev_vipa_add6_store(struct device *dev,
 913                 struct device_attribute *attr, const char *buf, size_t count)
 914 {
 915         struct qeth_card *card = dev_get_drvdata(dev);
 916
 917         if (!card)
 918                 return -EINVAL;
 919
 920         return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV6);
 921 }
 922
 923 static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
 924                         qeth_l3_dev_vipa_add6_show,
 925                         qeth_l3_dev_vipa_add6_store);
 926
 927 static ssize_t qeth_l3_dev_vipa_del6_store(struct device *dev,
 928                 struct device_attribute *attr, const char *buf, size_t count)
 929 {
 930         struct qeth_card *card = dev_get_drvdata(dev);
 931
 932         if (!card)
 933                 return -EINVAL;
 934
 935         return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV6);
 936 }
 937
 938 static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
 939                         qeth_l3_dev_vipa_del6_store);
 940
 941 static struct attribute *qeth_vipa_device_attrs[] = {
 942         &dev_attr_vipa_add4.attr,
 943         &dev_attr_vipa_del4.attr,
 944         &dev_attr_vipa_add6.attr,
 945         &dev_attr_vipa_del6.attr,
 946         NULL,
 947 };
 948
 949 static struct attribute_group qeth_device_vipa_group = {
 950         .name = "vipa",
 951         .attrs = qeth_vipa_device_attrs,
 952 };
 953
 954 static ssize_t qeth_l3_dev_rxip_add_show(char *buf, struct qeth_card *card,
 955                        enum qeth_prot_versions proto)
 956 {
 957         struct qeth_ipaddr *ipaddr;
 958         char addr_str[40];
 959         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 960         unsigned long flags;
 961         int i = 0;
 962
 963         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 964         entry_len += 2; /* \n + terminator */
 965         spin_lock_irqsave(&card->ip_lock, flags);
 966         list_for_each_entry(ipaddr, &card->ip_list, entry) {
 967                 if (ipaddr->proto != proto)
 968                         continue;
 969                 if (ipaddr->type != QETH_IP_TYPE_RXIP)
 970                         continue;
 971                 /* String must not be longer than PAGE_SIZE. So we check if
 972                  * string length gets near PAGE_SIZE. Then we can savely display
 973                  * the next IPv6 address (worst case, compared to IPv4) */
 974                 if ((PAGE_SIZE - i) <= entry_len)
 975                         break;
 976                 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
 977                         addr_str);
 978                 i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
 979         }
 980         spin_unlock_irqrestore(&card->ip_lock, flags);
 981         i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 982
 983         return i;
 984 }
 985
 986 static ssize_t qeth_l3_dev_rxip_add4_show(struct device *dev,
 987                         struct device_attribute *attr, char *buf)
 988 {
 989         struct qeth_card *card = dev_get_drvdata(dev);
 990
 991         if (!card)
 992                 return -EINVAL;
 993
 994         return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV4);
 995 }
 996
 997 static int qeth_l3_parse_rxipe(const char *buf, enum qeth_prot_versions proto,
 998                  u8 *addr)
 999 {
1000         if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
1001                 return -EINVAL;
1002         }
1003         return 0;
1004 }
1005
1006 static ssize_t qeth_l3_dev_rxip_add_store(const char *buf, size_t count,
1007                         struct qeth_card *card, enum qeth_prot_versions proto)
1008 {
1009         u8 addr[16] = {0, };
1010         int rc;
1011
1012         mutex_lock(&card->conf_mutex);
1013         rc = qeth_l3_parse_rxipe(buf, proto, addr);
1014         if (!rc)
1015                 rc = qeth_l3_add_rxip(card, proto, addr);
1016         mutex_unlock(&card->conf_mutex);
1017         return rc ? rc : count;
1018 }
1019
1020 static ssize_t qeth_l3_dev_rxip_add4_store(struct device *dev,
1021                 struct device_attribute *attr, const char *buf, size_t count)
1022 {
1023         struct qeth_card *card = dev_get_drvdata(dev);
1024
1025         if (!card)
1026                 return -EINVAL;
1027
1028         return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV4);
1029 }
1030
1031 static QETH_DEVICE_ATTR(rxip_add4, add4, 0644,
1032                         qeth_l3_dev_rxip_add4_show,
1033                         qeth_l3_dev_rxip_add4_store);
1034
1035 static ssize_t qeth_l3_dev_rxip_del_store(const char *buf, size_t count,
1036                         struct qeth_card *card, enum qeth_prot_versions proto)
1037 {
1038         u8 addr[16];
1039         int rc;
1040
1041         mutex_lock(&card->conf_mutex);
1042         rc = qeth_l3_parse_rxipe(buf, proto, addr);
1043         if (!rc)
1044                 qeth_l3_del_rxip(card, proto, addr);
1045         mutex_unlock(&card->conf_mutex);
1046         return rc ? rc : count;
1047 }
1048
1049 static ssize_t qeth_l3_dev_rxip_del4_store(struct device *dev,
1050                 struct device_attribute *attr, const char *buf, size_t count)
1051 {
1052         struct qeth_card *card = dev_get_drvdata(dev);
1053
1054         if (!card)
1055                 return -EINVAL;
1056
1057         return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV4);
1058 }
1059
1060 static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
1061                         qeth_l3_dev_rxip_del4_store);
1062
1063 static ssize_t qeth_l3_dev_rxip_add6_show(struct device *dev,
1064                 struct device_attribute *attr, char *buf)
1065 {
1066         struct qeth_card *card = dev_get_drvdata(dev);
1067
1068         if (!card)
1069                 return -EINVAL;
1070
1071         return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV6);
1072 }
1073
1074 static ssize_t qeth_l3_dev_rxip_add6_store(struct device *dev,
1075                 struct device_attribute *attr, const char *buf, size_t count)
1076 {
1077         struct qeth_card *card = dev_get_drvdata(dev);
1078
1079         if (!card)
1080                 return -EINVAL;
1081
1082         return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV6);
1083 }
1084
1085 static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
1086                         qeth_l3_dev_rxip_add6_show,
1087                         qeth_l3_dev_rxip_add6_store);
1088
1089 static ssize_t qeth_l3_dev_rxip_del6_store(struct device *dev,
1090                 struct device_attribute *attr, const char *buf, size_t count)
1091 {
1092         struct qeth_card *card = dev_get_drvdata(dev);
1093
1094         if (!card)
1095                 return -EINVAL;
1096
1097         return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV6);
1098 }
1099
1100 static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,
1101                         qeth_l3_dev_rxip_del6_store);
1102
1103 static struct attribute *qeth_rxip_device_attrs[] = {
1104         &dev_attr_rxip_add4.attr,
1105         &dev_attr_rxip_del4.attr,
1106         &dev_attr_rxip_add6.attr,
1107         &dev_attr_rxip_del6.attr,
1108         NULL,
1109 };
1110
1111 static struct attribute_group qeth_device_rxip_group = {
1112         .name = "rxip",
1113         .attrs = qeth_rxip_device_attrs,
1114 };
1115
1116 int qeth_l3_create_device_attributes(struct device *dev)
1117 {
1118         int ret;
1119
1120         ret = sysfs_create_group(&dev->kobj, &qeth_l3_device_attr_group);
1121         if (ret)
1122                 return ret;
1123
1124         ret = sysfs_create_group(&dev->kobj, &qeth_device_ipato_group);
1125         if (ret) {
1126                 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1127                 return ret;
1128         }
1129
1130         ret = sysfs_create_group(&dev->kobj, &qeth_device_vipa_group);
1131         if (ret) {
1132                 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1133                 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1134                 return ret;
1135         }
1136
1137         ret = sysfs_create_group(&dev->kobj, &qeth_device_rxip_group);
1138         if (ret) {
1139                 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1140                 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1141                 sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1142                 return ret;
1143         }
1144         return 0;
1145 }
1146
1147 void qeth_l3_remove_device_attributes(struct device *dev)
1148 {
1149         sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1150         sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1151         sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1152         sysfs_remove_group(&dev->kobj, &qeth_device_rxip_group);
1153 }