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 <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         struct qeth_ipaddr *tmpipa, *t;
 483         char *tmp;
 484         int rc = 0;
 485
 486         if (!card)
 487                 return -EINVAL;
 488
 489         mutex_lock(&card->conf_mutex);
 490         if ((card->state != CARD_STATE_DOWN) &&
 491             (card->state != CARD_STATE_RECOVER)) {
 492                 rc = -EPERM;
 493                 goto out;
 494         }
 495
 496         tmp = strsep((char **) &buf, "\n");
 497         if (!strcmp(tmp, "toggle")) {
 498                 card->ipato.enabled = (card->ipato.enabled)? 0 : 1;
 499         } else if (!strcmp(tmp, "1")) {
 500                 card->ipato.enabled = 1;
 501                 list_for_each_entry_safe(tmpipa, t, card->ip_tbd_list, entry) {
 502                         if ((tmpipa->type == QETH_IP_TYPE_NORMAL) &&
 503                                 qeth_l3_is_addr_covered_by_ipato(card, tmpipa))
 504                                 tmpipa->set_flags |=
 505                                         QETH_IPA_SETIP_TAKEOVER_FLAG;
 506                 }
 507
 508         } else if (!strcmp(tmp, "0")) {
 509                 card->ipato.enabled = 0;
 510                 list_for_each_entry_safe(tmpipa, t, card->ip_tbd_list, entry) {
 511                         if (tmpipa->set_flags &
 512                                 QETH_IPA_SETIP_TAKEOVER_FLAG)
 513                                 tmpipa->set_flags &=
 514                                         ~QETH_IPA_SETIP_TAKEOVER_FLAG;
 515                 }
 516         } else
 517                 rc = -EINVAL;
 518 out:
 519         mutex_unlock(&card->conf_mutex);
 520         return rc ? rc : count;
 521 }
 522
 523 static QETH_DEVICE_ATTR(ipato_enable, enable, 0644,
 524                         qeth_l3_dev_ipato_enable_show,
 525                         qeth_l3_dev_ipato_enable_store);
 526
 527 static ssize_t qeth_l3_dev_ipato_invert4_show(struct device *dev,
 528                                 struct device_attribute *attr, char *buf)
 529 {
 530         struct qeth_card *card = dev_get_drvdata(dev);
 531
 532         if (!card)
 533                 return -EINVAL;
 534
 535         return sprintf(buf, "%i\n", card->ipato.invert4? 1:0);
 536 }
 537
 538 static ssize_t qeth_l3_dev_ipato_invert4_store(struct device *dev,
 539                                 struct device_attribute *attr,
 540                                 const char *buf, size_t count)
 541 {
 542         struct qeth_card *card = dev_get_drvdata(dev);
 543         char *tmp;
 544         int rc = 0;
 545
 546         if (!card)
 547                 return -EINVAL;
 548
 549         mutex_lock(&card->conf_mutex);
 550         tmp = strsep((char **) &buf, "\n");
 551         if (!strcmp(tmp, "toggle")) {
 552                 card->ipato.invert4 = (card->ipato.invert4)? 0 : 1;
 553         } else if (!strcmp(tmp, "1")) {
 554                 card->ipato.invert4 = 1;
 555         } else if (!strcmp(tmp, "0")) {
 556                 card->ipato.invert4 = 0;
 557         } else
 558                 rc = -EINVAL;
 559         mutex_unlock(&card->conf_mutex);
 560         return rc ? rc : count;
 561 }
 562
 563 static QETH_DEVICE_ATTR(ipato_invert4, invert4, 0644,
 564                         qeth_l3_dev_ipato_invert4_show,
 565                         qeth_l3_dev_ipato_invert4_store);
 566
 567 static ssize_t qeth_l3_dev_ipato_add_show(char *buf, struct qeth_card *card,
 568                         enum qeth_prot_versions proto)
 569 {
 570         struct qeth_ipato_entry *ipatoe;
 571         unsigned long flags;
 572         char addr_str[40];
 573         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 574         int i = 0;
 575
 576         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 577         /* add strlen for "/<mask>\n" */
 578         entry_len += (proto == QETH_PROT_IPV4)? 5 : 6;
 579         spin_lock_irqsave(&card->ip_lock, flags);
 580         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 581                 if (ipatoe->proto != proto)
 582                         continue;
 583                 /* String must not be longer than PAGE_SIZE. So we check if
 584                  * string length gets near PAGE_SIZE. Then we can savely display
 585                  * the next IPv6 address (worst case, compared to IPv4) */
 586                 if ((PAGE_SIZE - i) <= entry_len)
 587                         break;
 588                 qeth_l3_ipaddr_to_string(proto, ipatoe->addr, addr_str);
 589                 i += snprintf(buf + i, PAGE_SIZE - i,
 590                               "%s/%i\n", addr_str, ipatoe->mask_bits);
 591         }
 592         spin_unlock_irqrestore(&card->ip_lock, flags);
 593         i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 594
 595         return i;
 596 }
 597
 598 static ssize_t qeth_l3_dev_ipato_add4_show(struct device *dev,
 599                                 struct device_attribute *attr, char *buf)
 600 {
 601         struct qeth_card *card = dev_get_drvdata(dev);
 602
 603         if (!card)
 604                 return -EINVAL;
 605
 606         return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV4);
 607 }
 608
 609 static int qeth_l3_parse_ipatoe(const char *buf, enum qeth_prot_versions proto,
 610                   u8 *addr, int *mask_bits)
 611 {
 612         const char *start, *end;
 613         char *tmp;
 614         char buffer[40] = {0, };
 615
 616         start = buf;
 617         /* get address string */
 618         end = strchr(start, '/');
 619         if (!end || (end - start >= 40)) {
 620                 return -EINVAL;
 621         }
 622         strncpy(buffer, start, end - start);
 623         if (qeth_l3_string_to_ipaddr(buffer, proto, addr)) {
 624                 return -EINVAL;
 625         }
 626         start = end + 1;
 627         *mask_bits = simple_strtoul(start, &tmp, 10);
 628         if (!strlen(start) ||
 629             (tmp == start) ||
 630             (*mask_bits > ((proto == QETH_PROT_IPV4) ? 32 : 128))) {
 631                 return -EINVAL;
 632         }
 633         return 0;
 634 }
 635
 636 static ssize_t qeth_l3_dev_ipato_add_store(const char *buf, size_t count,
 637                          struct qeth_card *card, enum qeth_prot_versions proto)
 638 {
 639         struct qeth_ipato_entry *ipatoe;
 640         u8 addr[16];
 641         int mask_bits;
 642         int rc = 0;
 643
 644         mutex_lock(&card->conf_mutex);
 645         rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
 646         if (rc)
 647                 goto out;
 648
 649         ipatoe = kzalloc(sizeof(struct qeth_ipato_entry), GFP_KERNEL);
 650         if (!ipatoe) {
 651                 rc = -ENOMEM;
 652                 goto out;
 653         }
 654         ipatoe->proto = proto;
 655         memcpy(ipatoe->addr, addr, (proto == QETH_PROT_IPV4)? 4:16);
 656         ipatoe->mask_bits = mask_bits;
 657
 658         rc = qeth_l3_add_ipato_entry(card, ipatoe);
 659         if (rc)
 660                 kfree(ipatoe);
 661 out:
 662         mutex_unlock(&card->conf_mutex);
 663         return rc ? rc : count;
 664 }
 665
 666 static ssize_t qeth_l3_dev_ipato_add4_store(struct device *dev,
 667                 struct device_attribute *attr, const char *buf, size_t count)
 668 {
 669         struct qeth_card *card = dev_get_drvdata(dev);
 670
 671         if (!card)
 672                 return -EINVAL;
 673
 674         return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV4);
 675 }
 676
 677 static QETH_DEVICE_ATTR(ipato_add4, add4, 0644,
 678                         qeth_l3_dev_ipato_add4_show,
 679                         qeth_l3_dev_ipato_add4_store);
 680
 681 static ssize_t qeth_l3_dev_ipato_del_store(const char *buf, size_t count,
 682                          struct qeth_card *card, enum qeth_prot_versions proto)
 683 {
 684         u8 addr[16];
 685         int mask_bits;
 686         int rc = 0;
 687
 688         mutex_lock(&card->conf_mutex);
 689         rc = qeth_l3_parse_ipatoe(buf, proto, addr, &mask_bits);
 690         if (!rc)
 691                 qeth_l3_del_ipato_entry(card, proto, addr, mask_bits);
 692         mutex_unlock(&card->conf_mutex);
 693         return rc ? rc : count;
 694 }
 695
 696 static ssize_t qeth_l3_dev_ipato_del4_store(struct device *dev,
 697                 struct device_attribute *attr, const char *buf, size_t count)
 698 {
 699         struct qeth_card *card = dev_get_drvdata(dev);
 700
 701         if (!card)
 702                 return -EINVAL;
 703
 704         return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV4);
 705 }
 706
 707 static QETH_DEVICE_ATTR(ipato_del4, del4, 0200, NULL,
 708                         qeth_l3_dev_ipato_del4_store);
 709
 710 static ssize_t qeth_l3_dev_ipato_invert6_show(struct device *dev,
 711                 struct device_attribute *attr, char *buf)
 712 {
 713         struct qeth_card *card = dev_get_drvdata(dev);
 714
 715         if (!card)
 716                 return -EINVAL;
 717
 718         return sprintf(buf, "%i\n", card->ipato.invert6? 1:0);
 719 }
 720
 721 static ssize_t qeth_l3_dev_ipato_invert6_store(struct device *dev,
 722                 struct device_attribute *attr, const char *buf, size_t count)
 723 {
 724         struct qeth_card *card = dev_get_drvdata(dev);
 725         char *tmp;
 726         int rc = 0;
 727
 728         if (!card)
 729                 return -EINVAL;
 730
 731         mutex_lock(&card->conf_mutex);
 732         tmp = strsep((char **) &buf, "\n");
 733         if (!strcmp(tmp, "toggle")) {
 734                 card->ipato.invert6 = (card->ipato.invert6)? 0 : 1;
 735         } else if (!strcmp(tmp, "1")) {
 736                 card->ipato.invert6 = 1;
 737         } else if (!strcmp(tmp, "0")) {
 738                 card->ipato.invert6 = 0;
 739         } else
 740                 rc = -EINVAL;
 741         mutex_unlock(&card->conf_mutex);
 742         return rc ? rc : count;
 743 }
 744
 745 static QETH_DEVICE_ATTR(ipato_invert6, invert6, 0644,
 746                         qeth_l3_dev_ipato_invert6_show,
 747                         qeth_l3_dev_ipato_invert6_store);
 748
 749
 750 static ssize_t qeth_l3_dev_ipato_add6_show(struct device *dev,
 751                                 struct device_attribute *attr, char *buf)
 752 {
 753         struct qeth_card *card = dev_get_drvdata(dev);
 754
 755         if (!card)
 756                 return -EINVAL;
 757
 758         return qeth_l3_dev_ipato_add_show(buf, card, QETH_PROT_IPV6);
 759 }
 760
 761 static ssize_t qeth_l3_dev_ipato_add6_store(struct device *dev,
 762                 struct device_attribute *attr, const char *buf, size_t count)
 763 {
 764         struct qeth_card *card = dev_get_drvdata(dev);
 765
 766         if (!card)
 767                 return -EINVAL;
 768
 769         return qeth_l3_dev_ipato_add_store(buf, count, card, QETH_PROT_IPV6);
 770 }
 771
 772 static QETH_DEVICE_ATTR(ipato_add6, add6, 0644,
 773                         qeth_l3_dev_ipato_add6_show,
 774                         qeth_l3_dev_ipato_add6_store);
 775
 776 static ssize_t qeth_l3_dev_ipato_del6_store(struct device *dev,
 777                 struct device_attribute *attr, const char *buf, size_t count)
 778 {
 779         struct qeth_card *card = dev_get_drvdata(dev);
 780
 781         if (!card)
 782                 return -EINVAL;
 783
 784         return qeth_l3_dev_ipato_del_store(buf, count, card, QETH_PROT_IPV6);
 785 }
 786
 787 static QETH_DEVICE_ATTR(ipato_del6, del6, 0200, NULL,
 788                         qeth_l3_dev_ipato_del6_store);
 789
 790 static struct attribute *qeth_ipato_device_attrs[] = {
 791         &dev_attr_ipato_enable.attr,
 792         &dev_attr_ipato_invert4.attr,
 793         &dev_attr_ipato_add4.attr,
 794         &dev_attr_ipato_del4.attr,
 795         &dev_attr_ipato_invert6.attr,
 796         &dev_attr_ipato_add6.attr,
 797         &dev_attr_ipato_del6.attr,
 798         NULL,
 799 };
 800
 801 static struct attribute_group qeth_device_ipato_group = {
 802         .name = "ipa_takeover",
 803         .attrs = qeth_ipato_device_attrs,
 804 };
 805
 806 static ssize_t qeth_l3_dev_vipa_add_show(char *buf, struct qeth_card *card,
 807                         enum qeth_prot_versions proto)
 808 {
 809         struct qeth_ipaddr *ipaddr;
 810         char addr_str[40];
 811         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 812         unsigned long flags;
 813         int i = 0;
 814
 815         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 816         entry_len += 2; /* \n + terminator */
 817         spin_lock_irqsave(&card->ip_lock, flags);
 818         list_for_each_entry(ipaddr, &card->ip_list, entry) {
 819                 if (ipaddr->proto != proto)
 820                         continue;
 821                 if (ipaddr->type != QETH_IP_TYPE_VIPA)
 822                         continue;
 823                 /* String must not be longer than PAGE_SIZE. So we check if
 824                  * string length gets near PAGE_SIZE. Then we can savely display
 825                  * the next IPv6 address (worst case, compared to IPv4) */
 826                 if ((PAGE_SIZE - i) <= entry_len)
 827                         break;
 828                 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
 829                         addr_str);
 830                 i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
 831         }
 832         spin_unlock_irqrestore(&card->ip_lock, flags);
 833         i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 834
 835         return i;
 836 }
 837
 838 static ssize_t qeth_l3_dev_vipa_add4_show(struct device *dev,
 839                         struct device_attribute *attr, char *buf)
 840 {
 841         struct qeth_card *card = dev_get_drvdata(dev);
 842
 843         if (!card)
 844                 return -EINVAL;
 845
 846         return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV4);
 847 }
 848
 849 static int qeth_l3_parse_vipae(const char *buf, enum qeth_prot_versions proto,
 850                  u8 *addr)
 851 {
 852         if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
 853                 return -EINVAL;
 854         }
 855         return 0;
 856 }
 857
 858 static ssize_t qeth_l3_dev_vipa_add_store(const char *buf, size_t count,
 859                         struct qeth_card *card, enum qeth_prot_versions proto)
 860 {
 861         u8 addr[16] = {0, };
 862         int rc;
 863
 864         mutex_lock(&card->conf_mutex);
 865         rc = qeth_l3_parse_vipae(buf, proto, addr);
 866         if (!rc)
 867                 rc = qeth_l3_add_vipa(card, proto, addr);
 868         mutex_unlock(&card->conf_mutex);
 869         return rc ? rc : count;
 870 }
 871
 872 static ssize_t qeth_l3_dev_vipa_add4_store(struct device *dev,
 873                 struct device_attribute *attr, const char *buf, size_t count)
 874 {
 875         struct qeth_card *card = dev_get_drvdata(dev);
 876
 877         if (!card)
 878                 return -EINVAL;
 879
 880         return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV4);
 881 }
 882
 883 static QETH_DEVICE_ATTR(vipa_add4, add4, 0644,
 884                         qeth_l3_dev_vipa_add4_show,
 885                         qeth_l3_dev_vipa_add4_store);
 886
 887 static ssize_t qeth_l3_dev_vipa_del_store(const char *buf, size_t count,
 888                          struct qeth_card *card, enum qeth_prot_versions proto)
 889 {
 890         u8 addr[16];
 891         int rc;
 892
 893         mutex_lock(&card->conf_mutex);
 894         rc = qeth_l3_parse_vipae(buf, proto, addr);
 895         if (!rc)
 896                 qeth_l3_del_vipa(card, proto, addr);
 897         mutex_unlock(&card->conf_mutex);
 898         return rc ? rc : count;
 899 }
 900
 901 static ssize_t qeth_l3_dev_vipa_del4_store(struct device *dev,
 902                 struct device_attribute *attr, const char *buf, size_t count)
 903 {
 904         struct qeth_card *card = dev_get_drvdata(dev);
 905
 906         if (!card)
 907                 return -EINVAL;
 908
 909         return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV4);
 910 }
 911
 912 static QETH_DEVICE_ATTR(vipa_del4, del4, 0200, NULL,
 913                         qeth_l3_dev_vipa_del4_store);
 914
 915 static ssize_t qeth_l3_dev_vipa_add6_show(struct device *dev,
 916                                 struct device_attribute *attr, char *buf)
 917 {
 918         struct qeth_card *card = dev_get_drvdata(dev);
 919
 920         if (!card)
 921                 return -EINVAL;
 922
 923         return qeth_l3_dev_vipa_add_show(buf, card, QETH_PROT_IPV6);
 924 }
 925
 926 static ssize_t qeth_l3_dev_vipa_add6_store(struct device *dev,
 927                 struct device_attribute *attr, const char *buf, size_t count)
 928 {
 929         struct qeth_card *card = dev_get_drvdata(dev);
 930
 931         if (!card)
 932                 return -EINVAL;
 933
 934         return qeth_l3_dev_vipa_add_store(buf, count, card, QETH_PROT_IPV6);
 935 }
 936
 937 static QETH_DEVICE_ATTR(vipa_add6, add6, 0644,
 938                         qeth_l3_dev_vipa_add6_show,
 939                         qeth_l3_dev_vipa_add6_store);
 940
 941 static ssize_t qeth_l3_dev_vipa_del6_store(struct device *dev,
 942                 struct device_attribute *attr, const char *buf, size_t count)
 943 {
 944         struct qeth_card *card = dev_get_drvdata(dev);
 945
 946         if (!card)
 947                 return -EINVAL;
 948
 949         return qeth_l3_dev_vipa_del_store(buf, count, card, QETH_PROT_IPV6);
 950 }
 951
 952 static QETH_DEVICE_ATTR(vipa_del6, del6, 0200, NULL,
 953                         qeth_l3_dev_vipa_del6_store);
 954
 955 static struct attribute *qeth_vipa_device_attrs[] = {
 956         &dev_attr_vipa_add4.attr,
 957         &dev_attr_vipa_del4.attr,
 958         &dev_attr_vipa_add6.attr,
 959         &dev_attr_vipa_del6.attr,
 960         NULL,
 961 };
 962
 963 static struct attribute_group qeth_device_vipa_group = {
 964         .name = "vipa",
 965         .attrs = qeth_vipa_device_attrs,
 966 };
 967
 968 static ssize_t qeth_l3_dev_rxip_add_show(char *buf, struct qeth_card *card,
 969                        enum qeth_prot_versions proto)
 970 {
 971         struct qeth_ipaddr *ipaddr;
 972         char addr_str[40];
 973         int entry_len; /* length of 1 entry string, differs between v4 and v6 */
 974         unsigned long flags;
 975         int i = 0;
 976
 977         entry_len = (proto == QETH_PROT_IPV4)? 12 : 40;
 978         entry_len += 2; /* \n + terminator */
 979         spin_lock_irqsave(&card->ip_lock, flags);
 980         list_for_each_entry(ipaddr, &card->ip_list, entry) {
 981                 if (ipaddr->proto != proto)
 982                         continue;
 983                 if (ipaddr->type != QETH_IP_TYPE_RXIP)
 984                         continue;
 985                 /* String must not be longer than PAGE_SIZE. So we check if
 986                  * string length gets near PAGE_SIZE. Then we can savely display
 987                  * the next IPv6 address (worst case, compared to IPv4) */
 988                 if ((PAGE_SIZE - i) <= entry_len)
 989                         break;
 990                 qeth_l3_ipaddr_to_string(proto, (const u8 *)&ipaddr->u,
 991                         addr_str);
 992                 i += snprintf(buf + i, PAGE_SIZE - i, "%s\n", addr_str);
 993         }
 994         spin_unlock_irqrestore(&card->ip_lock, flags);
 995         i += snprintf(buf + i, PAGE_SIZE - i, "\n");
 996
 997         return i;
 998 }
 999
1000 static ssize_t qeth_l3_dev_rxip_add4_show(struct device *dev,
1001                         struct device_attribute *attr, char *buf)
1002 {
1003         struct qeth_card *card = dev_get_drvdata(dev);
1004
1005         if (!card)
1006                 return -EINVAL;
1007
1008         return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV4);
1009 }
1010
1011 static int qeth_l3_parse_rxipe(const char *buf, enum qeth_prot_versions proto,
1012                  u8 *addr)
1013 {
1014         if (qeth_l3_string_to_ipaddr(buf, proto, addr)) {
1015                 return -EINVAL;
1016         }
1017         return 0;
1018 }
1019
1020 static ssize_t qeth_l3_dev_rxip_add_store(const char *buf, size_t count,
1021                         struct qeth_card *card, enum qeth_prot_versions proto)
1022 {
1023         u8 addr[16] = {0, };
1024         int rc;
1025
1026         mutex_lock(&card->conf_mutex);
1027         rc = qeth_l3_parse_rxipe(buf, proto, addr);
1028         if (!rc)
1029                 rc = qeth_l3_add_rxip(card, proto, addr);
1030         mutex_unlock(&card->conf_mutex);
1031         return rc ? rc : count;
1032 }
1033
1034 static ssize_t qeth_l3_dev_rxip_add4_store(struct device *dev,
1035                 struct device_attribute *attr, const char *buf, size_t count)
1036 {
1037         struct qeth_card *card = dev_get_drvdata(dev);
1038
1039         if (!card)
1040                 return -EINVAL;
1041
1042         return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV4);
1043 }
1044
1045 static QETH_DEVICE_ATTR(rxip_add4, add4, 0644,
1046                         qeth_l3_dev_rxip_add4_show,
1047                         qeth_l3_dev_rxip_add4_store);
1048
1049 static ssize_t qeth_l3_dev_rxip_del_store(const char *buf, size_t count,
1050                         struct qeth_card *card, enum qeth_prot_versions proto)
1051 {
1052         u8 addr[16];
1053         int rc;
1054
1055         mutex_lock(&card->conf_mutex);
1056         rc = qeth_l3_parse_rxipe(buf, proto, addr);
1057         if (!rc)
1058                 qeth_l3_del_rxip(card, proto, addr);
1059         mutex_unlock(&card->conf_mutex);
1060         return rc ? rc : count;
1061 }
1062
1063 static ssize_t qeth_l3_dev_rxip_del4_store(struct device *dev,
1064                 struct device_attribute *attr, const char *buf, size_t count)
1065 {
1066         struct qeth_card *card = dev_get_drvdata(dev);
1067
1068         if (!card)
1069                 return -EINVAL;
1070
1071         return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV4);
1072 }
1073
1074 static QETH_DEVICE_ATTR(rxip_del4, del4, 0200, NULL,
1075                         qeth_l3_dev_rxip_del4_store);
1076
1077 static ssize_t qeth_l3_dev_rxip_add6_show(struct device *dev,
1078                 struct device_attribute *attr, char *buf)
1079 {
1080         struct qeth_card *card = dev_get_drvdata(dev);
1081
1082         if (!card)
1083                 return -EINVAL;
1084
1085         return qeth_l3_dev_rxip_add_show(buf, card, QETH_PROT_IPV6);
1086 }
1087
1088 static ssize_t qeth_l3_dev_rxip_add6_store(struct device *dev,
1089                 struct device_attribute *attr, const char *buf, size_t count)
1090 {
1091         struct qeth_card *card = dev_get_drvdata(dev);
1092
1093         if (!card)
1094                 return -EINVAL;
1095
1096         return qeth_l3_dev_rxip_add_store(buf, count, card, QETH_PROT_IPV6);
1097 }
1098
1099 static QETH_DEVICE_ATTR(rxip_add6, add6, 0644,
1100                         qeth_l3_dev_rxip_add6_show,
1101                         qeth_l3_dev_rxip_add6_store);
1102
1103 static ssize_t qeth_l3_dev_rxip_del6_store(struct device *dev,
1104                 struct device_attribute *attr, const char *buf, size_t count)
1105 {
1106         struct qeth_card *card = dev_get_drvdata(dev);
1107
1108         if (!card)
1109                 return -EINVAL;
1110
1111         return qeth_l3_dev_rxip_del_store(buf, count, card, QETH_PROT_IPV6);
1112 }
1113
1114 static QETH_DEVICE_ATTR(rxip_del6, del6, 0200, NULL,
1115                         qeth_l3_dev_rxip_del6_store);
1116
1117 static struct attribute *qeth_rxip_device_attrs[] = {
1118         &dev_attr_rxip_add4.attr,
1119         &dev_attr_rxip_del4.attr,
1120         &dev_attr_rxip_add6.attr,
1121         &dev_attr_rxip_del6.attr,
1122         NULL,
1123 };
1124
1125 static struct attribute_group qeth_device_rxip_group = {
1126         .name = "rxip",
1127         .attrs = qeth_rxip_device_attrs,
1128 };
1129
1130 int qeth_l3_create_device_attributes(struct device *dev)
1131 {
1132         int ret;
1133
1134         ret = sysfs_create_group(&dev->kobj, &qeth_l3_device_attr_group);
1135         if (ret)
1136                 return ret;
1137
1138         ret = sysfs_create_group(&dev->kobj, &qeth_device_ipato_group);
1139         if (ret) {
1140                 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1141                 return ret;
1142         }
1143
1144         ret = sysfs_create_group(&dev->kobj, &qeth_device_vipa_group);
1145         if (ret) {
1146                 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1147                 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1148                 return ret;
1149         }
1150
1151         ret = sysfs_create_group(&dev->kobj, &qeth_device_rxip_group);
1152         if (ret) {
1153                 sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1154                 sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1155                 sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1156                 return ret;
1157         }
1158         return 0;
1159 }
1160
1161 void qeth_l3_remove_device_attributes(struct device *dev)
1162 {
1163         sysfs_remove_group(&dev->kobj, &qeth_l3_device_attr_group);
1164         sysfs_remove_group(&dev->kobj, &qeth_device_ipato_group);
1165         sysfs_remove_group(&dev->kobj, &qeth_device_vipa_group);
1166         sysfs_remove_group(&dev->kobj, &qeth_device_rxip_group);
1167 }