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   1 /*
   2  *  drivers/s390/net/qeth_l3_main.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 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/mii.h>
  21 #include <linux/ip.h>
  22 #include <linux/reboot.h>
  23 #include <linux/inetdevice.h>
  24 #include <linux/igmp.h>
  25
  26 #include <net/ip.h>
  27 #include <net/arp.h>
  28
  29 #include <asm/s390_rdev.h>
  30
  31 #include "qeth_l3.h"
  32 #include "qeth_core_offl.h"
  33
  34 static int qeth_l3_set_offline(struct ccwgroup_device *);
  35 static int qeth_l3_recover(void *);
  36 static int qeth_l3_stop(struct net_device *);
  37 static void qeth_l3_set_multicast_list(struct net_device *);
  38 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  39 static int qeth_l3_register_addr_entry(struct qeth_card *,
  40                 struct qeth_ipaddr *);
  41 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  42                 struct qeth_ipaddr *);
  43 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  44 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  45
  46
  47 static int qeth_l3_isxdigit(char *buf)
  48 {
  49         while (*buf) {
  50                 if (!isxdigit(*buf++))
  51                         return 0;
  52         }
  53         return 1;
  54 }
  55
  56 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  57 {
  58         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
  59 }
  60
  61 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  62 {
  63         int count = 0, rc = 0;
  64         int in[4];
  65         char c;
  66
  67         rc = sscanf(buf, "%u.%u.%u.%u%c",
  68                     &in[0], &in[1], &in[2], &in[3], &c);
  69         if (rc != 4 && (rc != 5 || c != '\n'))
  70                 return -EINVAL;
  71         for (count = 0; count < 4; count++) {
  72                 if (in[count] > 255)
  73                         return -EINVAL;
  74                 addr[count] = in[count];
  75         }
  76         return 0;
  77 }
  78
  79 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  80 {
  81         sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
  82                      ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
  83                      addr[0], addr[1], addr[2], addr[3],
  84                      addr[4], addr[5], addr[6], addr[7],
  85                      addr[8], addr[9], addr[10], addr[11],
  86                      addr[12], addr[13], addr[14], addr[15]);
  87 }
  88
  89 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  90 {
  91         const char *end, *end_tmp, *start;
  92         __u16 *in;
  93         char num[5];
  94         int num2, cnt, out, found, save_cnt;
  95         unsigned short in_tmp[8] = {0, };
  96
  97         cnt = out = found = save_cnt = num2 = 0;
  98         end = start = buf;
  99         in = (__u16 *) addr;
 100         memset(in, 0, 16);
 101         while (*end) {
 102                 end = strchr(start, ':');
 103                 if (end == NULL) {
 104                         end = buf + strlen(buf);
 105                         end_tmp = strchr(start, '\n');
 106                         if (end_tmp != NULL)
 107                                 end = end_tmp;
 108                         out = 1;
 109                 }
 110                 if ((end - start)) {
 111                         memset(num, 0, 5);
 112                         if ((end - start) > 4)
 113                                 return -EINVAL;
 114                         memcpy(num, start, end - start);
 115                         if (!qeth_l3_isxdigit(num))
 116                                 return -EINVAL;
 117                         sscanf(start, "%x", &num2);
 118                         if (found)
 119                                 in_tmp[save_cnt++] = num2;
 120                         else
 121                                 in[cnt++] = num2;
 122                         if (out)
 123                                 break;
 124                 } else {
 125                         if (found)
 126                                 return -EINVAL;
 127                         found = 1;
 128                 }
 129                 start = ++end;
 130         }
 131         if (cnt + save_cnt > 8)
 132                 return -EINVAL;
 133         cnt = 7;
 134         while (save_cnt)
 135                 in[cnt--] = in_tmp[--save_cnt];
 136         return 0;
 137 }
 138
 139 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 140                                 char *buf)
 141 {
 142         if (proto == QETH_PROT_IPV4)
 143                 qeth_l3_ipaddr4_to_string(addr, buf);
 144         else if (proto == QETH_PROT_IPV6)
 145                 qeth_l3_ipaddr6_to_string(addr, buf);
 146 }
 147
 148 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 149                                 __u8 *addr)
 150 {
 151         if (proto == QETH_PROT_IPV4)
 152                 return qeth_l3_string_to_ipaddr4(buf, addr);
 153         else if (proto == QETH_PROT_IPV6)
 154                 return qeth_l3_string_to_ipaddr6(buf, addr);
 155         else
 156                 return -EINVAL;
 157 }
 158
 159 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 160 {
 161         int i, j;
 162         u8 octet;
 163
 164         for (i = 0; i < len; ++i) {
 165                 octet = addr[i];
 166                 for (j = 7; j >= 0; --j) {
 167                         bits[i*8 + j] = octet & 1;
 168                         octet >>= 1;
 169                 }
 170         }
 171 }
 172
 173 static int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 174                                                 struct qeth_ipaddr *addr)
 175 {
 176         struct qeth_ipato_entry *ipatoe;
 177         u8 addr_bits[128] = {0, };
 178         u8 ipatoe_bits[128] = {0, };
 179         int rc = 0;
 180
 181         if (!card->ipato.enabled)
 182                 return 0;
 183
 184         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 185                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 186         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 187                 if (addr->proto != ipatoe->proto)
 188                         continue;
 189                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 190                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 191                                           4 : 16);
 192                 if (addr->proto == QETH_PROT_IPV4)
 193                         rc = !memcmp(addr_bits, ipatoe_bits,
 194                                      min(32, ipatoe->mask_bits));
 195                 else
 196                         rc = !memcmp(addr_bits, ipatoe_bits,
 197                                      min(128, ipatoe->mask_bits));
 198                 if (rc)
 199                         break;
 200         }
 201         /* invert? */
 202         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 203                 rc = !rc;
 204         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 205                 rc = !rc;
 206
 207         return rc;
 208 }
 209
 210 /*
 211  * Add IP to be added to todo list. If there is already an "add todo"
 212  * in this list we just incremenent the reference count.
 213  * Returns 0 if we  just incremented reference count.
 214  */
 215 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
 216                                         struct qeth_ipaddr *addr, int add)
 217 {
 218         struct qeth_ipaddr *tmp, *t;
 219         int found = 0;
 220
 221         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
 222                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
 223                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
 224                         return 0;
 225                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
 226                     (addr->proto       == QETH_PROT_IPV4)     &&
 227                     (tmp->type         == addr->type)         &&
 228                     (tmp->is_multicast == addr->is_multicast) &&
 229                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
 230                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
 231                         found = 1;
 232                         break;
 233                 }
 234                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
 235                     (addr->proto       == QETH_PROT_IPV6)      &&
 236                     (tmp->type         == addr->type)          &&
 237                     (tmp->is_multicast == addr->is_multicast)  &&
 238                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
 239                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 240                             sizeof(struct in6_addr)) == 0)) {
 241                         found = 1;
 242                         break;
 243                 }
 244         }
 245         if (found) {
 246                 if (addr->users != 0)
 247                         tmp->users += addr->users;
 248                 else
 249                         tmp->users += add ? 1 : -1;
 250                 if (tmp->users == 0) {
 251                         list_del(&tmp->entry);
 252                         kfree(tmp);
 253                 }
 254                 return 0;
 255         } else {
 256                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
 257                         list_add(&addr->entry, card->ip_tbd_list);
 258                 else {
 259                         if (addr->users == 0)
 260                                 addr->users += add ? 1 : -1;
 261                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
 262                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 263                                 QETH_DBF_TEXT(TRACE, 2, "tkovaddr");
 264                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 265                         }
 266                         list_add_tail(&addr->entry, card->ip_tbd_list);
 267                 }
 268                 return 1;
 269         }
 270 }
 271
 272 static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 273 {
 274         unsigned long flags;
 275         int rc = 0;
 276
 277         QETH_DBF_TEXT(TRACE, 4, "delip");
 278
 279         if (addr->proto == QETH_PROT_IPV4)
 280                 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
 281         else {
 282                 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
 283                 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 284         }
 285         spin_lock_irqsave(&card->ip_lock, flags);
 286         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
 287         spin_unlock_irqrestore(&card->ip_lock, flags);
 288         return rc;
 289 }
 290
 291 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 292 {
 293         unsigned long flags;
 294         int rc = 0;
 295
 296         QETH_DBF_TEXT(TRACE, 4, "addip");
 297         if (addr->proto == QETH_PROT_IPV4)
 298                 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
 299         else {
 300                 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
 301                 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 302         }
 303         spin_lock_irqsave(&card->ip_lock, flags);
 304         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
 305         spin_unlock_irqrestore(&card->ip_lock, flags);
 306         return rc;
 307 }
 308
 309
 310 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 311                                 enum qeth_prot_versions prot)
 312 {
 313         struct qeth_ipaddr *addr;
 314
 315         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 316         if (addr == NULL) {
 317                 return NULL;
 318         }
 319         addr->type = QETH_IP_TYPE_NORMAL;
 320         addr->proto = prot;
 321         return addr;
 322 }
 323
 324 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
 325 {
 326         struct qeth_ipaddr *iptodo;
 327         unsigned long flags;
 328
 329         QETH_DBF_TEXT(TRACE, 4, "delmc");
 330         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
 331         if (!iptodo) {
 332                 QETH_DBF_TEXT(TRACE, 2, "dmcnomem");
 333                 return;
 334         }
 335         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
 336         spin_lock_irqsave(&card->ip_lock, flags);
 337         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
 338                 kfree(iptodo);
 339         spin_unlock_irqrestore(&card->ip_lock, flags);
 340 }
 341
 342 /*
 343  * Add/remove address to/from card's ip list, i.e. try to add or remove
 344  * reference to/from an IP address that is already registered on the card.
 345  * Returns:
 346  *      0  address was on card and its reference count has been adjusted,
 347  *         but is still > 0, so nothing has to be done
 348  *         also returns 0 if card was not on card and the todo was to delete
 349  *         the address -> there is also nothing to be done
 350  *      1  address was not on card and the todo is to add it to the card's ip
 351  *         list
 352  *      -1 address was on card and its reference count has been decremented
 353  *         to <= 0 by the todo -> address must be removed from card
 354  */
 355 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
 356                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
 357 {
 358         struct qeth_ipaddr *addr;
 359         int found = 0;
 360
 361         list_for_each_entry(addr, &card->ip_list, entry) {
 362                 if ((addr->proto == QETH_PROT_IPV4) &&
 363                     (todo->proto == QETH_PROT_IPV4) &&
 364                     (addr->type == todo->type) &&
 365                     (addr->u.a4.addr == todo->u.a4.addr) &&
 366                     (addr->u.a4.mask == todo->u.a4.mask)) {
 367                         found = 1;
 368                         break;
 369                 }
 370                 if ((addr->proto == QETH_PROT_IPV6) &&
 371                     (todo->proto == QETH_PROT_IPV6) &&
 372                     (addr->type == todo->type) &&
 373                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
 374                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
 375                             sizeof(struct in6_addr)) == 0)) {
 376                         found = 1;
 377                         break;
 378                 }
 379         }
 380         if (found) {
 381                 addr->users += todo->users;
 382                 if (addr->users <= 0) {
 383                         *__addr = addr;
 384                         return -1;
 385                 } else {
 386                         /* for VIPA and RXIP limit refcount to 1 */
 387                         if (addr->type != QETH_IP_TYPE_NORMAL)
 388                                 addr->users = 1;
 389                         return 0;
 390                 }
 391         }
 392         if (todo->users > 0) {
 393                 /* for VIPA and RXIP limit refcount to 1 */
 394                 if (todo->type != QETH_IP_TYPE_NORMAL)
 395                         todo->users = 1;
 396                 return 1;
 397         } else
 398                 return 0;
 399 }
 400
 401 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
 402                                         unsigned long *flags)
 403 {
 404         struct list_head fail_list;
 405         struct qeth_ipaddr *addr, *tmp;
 406         int rc;
 407
 408         INIT_LIST_HEAD(&fail_list);
 409 again:
 410         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
 411                 if (addr->is_multicast) {
 412                         list_del(&addr->entry);
 413                         spin_unlock_irqrestore(&card->ip_lock, *flags);
 414                         rc = qeth_l3_deregister_addr_entry(card, addr);
 415                         spin_lock_irqsave(&card->ip_lock, *flags);
 416                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
 417                                 kfree(addr);
 418                         else
 419                                 list_add_tail(&addr->entry, &fail_list);
 420                         goto again;
 421                 }
 422         }
 423         list_splice(&fail_list, &card->ip_list);
 424 }
 425
 426 static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
 427 {
 428         struct list_head *tbd_list;
 429         struct qeth_ipaddr *todo, *addr;
 430         unsigned long flags;
 431         int rc;
 432
 433         QETH_DBF_TEXT(TRACE, 2, "sdiplist");
 434         QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
 435
 436         spin_lock_irqsave(&card->ip_lock, flags);
 437         tbd_list = card->ip_tbd_list;
 438         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
 439         if (!card->ip_tbd_list) {
 440                 QETH_DBF_TEXT(TRACE, 0, "silnomem");
 441                 card->ip_tbd_list = tbd_list;
 442                 spin_unlock_irqrestore(&card->ip_lock, flags);
 443                 return;
 444         } else
 445                 INIT_LIST_HEAD(card->ip_tbd_list);
 446
 447         while (!list_empty(tbd_list)) {
 448                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
 449                 list_del(&todo->entry);
 450                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
 451                         __qeth_l3_delete_all_mc(card, &flags);
 452                         kfree(todo);
 453                         continue;
 454                 }
 455                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
 456                 if (rc == 0) {
 457                         /* nothing to be done; only adjusted refcount */
 458                         kfree(todo);
 459                 } else if (rc == 1) {
 460                         /* new entry to be added to on-card list */
 461                         spin_unlock_irqrestore(&card->ip_lock, flags);
 462                         rc = qeth_l3_register_addr_entry(card, todo);
 463                         spin_lock_irqsave(&card->ip_lock, flags);
 464                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
 465                                 list_add_tail(&todo->entry, &card->ip_list);
 466                         else
 467                                 kfree(todo);
 468                 } else if (rc == -1) {
 469                         /* on-card entry to be removed */
 470                         list_del_init(&addr->entry);
 471                         spin_unlock_irqrestore(&card->ip_lock, flags);
 472                         rc = qeth_l3_deregister_addr_entry(card, addr);
 473                         spin_lock_irqsave(&card->ip_lock, flags);
 474                         if (!rc || (rc == IPA_RC_PRIMARY_ALREADY_DEFINED))
 475                                 kfree(addr);
 476                         else
 477                                 list_add_tail(&addr->entry, &card->ip_list);
 478                         kfree(todo);
 479                 }
 480         }
 481         spin_unlock_irqrestore(&card->ip_lock, flags);
 482         kfree(tbd_list);
 483 }
 484
 485 static void qeth_l3_clear_ip_list(struct qeth_card *card, int clean,
 486                                         int recover)
 487 {
 488         struct qeth_ipaddr *addr, *tmp;
 489         unsigned long flags;
 490
 491         QETH_DBF_TEXT(TRACE, 4, "clearip");
 492         spin_lock_irqsave(&card->ip_lock, flags);
 493         /* clear todo list */
 494         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
 495                 list_del(&addr->entry);
 496                 kfree(addr);
 497         }
 498
 499         while (!list_empty(&card->ip_list)) {
 500                 addr = list_entry(card->ip_list.next,
 501                                   struct qeth_ipaddr, entry);
 502                 list_del_init(&addr->entry);
 503                 if (clean) {
 504                         spin_unlock_irqrestore(&card->ip_lock, flags);
 505                         qeth_l3_deregister_addr_entry(card, addr);
 506                         spin_lock_irqsave(&card->ip_lock, flags);
 507                 }
 508                 if (!recover || addr->is_multicast) {
 509                         kfree(addr);
 510                         continue;
 511                 }
 512                 list_add_tail(&addr->entry, card->ip_tbd_list);
 513         }
 514         spin_unlock_irqrestore(&card->ip_lock, flags);
 515 }
 516
 517 static int qeth_l3_address_exists_in_list(struct list_head *list,
 518                 struct qeth_ipaddr *addr, int same_type)
 519 {
 520         struct qeth_ipaddr *tmp;
 521
 522         list_for_each_entry(tmp, list, entry) {
 523                 if ((tmp->proto == QETH_PROT_IPV4) &&
 524                     (addr->proto == QETH_PROT_IPV4) &&
 525                     ((same_type && (tmp->type == addr->type)) ||
 526                     (!same_type && (tmp->type != addr->type))) &&
 527                     (tmp->u.a4.addr == addr->u.a4.addr))
 528                         return 1;
 529
 530                 if ((tmp->proto == QETH_PROT_IPV6) &&
 531                     (addr->proto == QETH_PROT_IPV6) &&
 532                     ((same_type && (tmp->type == addr->type)) ||
 533                     (!same_type && (tmp->type != addr->type))) &&
 534                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 535                             sizeof(struct in6_addr)) == 0))
 536                         return 1;
 537
 538         }
 539         return 0;
 540 }
 541
 542 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 543                         struct qeth_ipaddr *addr, int ipacmd)
 544 {
 545         int rc;
 546         struct qeth_cmd_buffer *iob;
 547         struct qeth_ipa_cmd *cmd;
 548
 549         QETH_DBF_TEXT(TRACE, 4, "setdelmc");
 550
 551         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 552         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 553         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 554         if (addr->proto == QETH_PROT_IPV6)
 555                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 556                        sizeof(struct in6_addr));
 557         else
 558                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 559
 560         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 561
 562         return rc;
 563 }
 564
 565 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 566 {
 567         int i, j;
 568         for (i = 0; i < 16; i++) {
 569                 j = (len) - (i * 8);
 570                 if (j >= 8)
 571                         netmask[i] = 0xff;
 572                 else if (j > 0)
 573                         netmask[i] = (u8)(0xFF00 >> j);
 574                 else
 575                         netmask[i] = 0;
 576         }
 577 }
 578
 579 static int qeth_l3_send_setdelip(struct qeth_card *card,
 580                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 581 {
 582         int rc;
 583         struct qeth_cmd_buffer *iob;
 584         struct qeth_ipa_cmd *cmd;
 585         __u8 netmask[16];
 586
 587         QETH_DBF_TEXT(TRACE, 4, "setdelip");
 588         QETH_DBF_TEXT_(TRACE, 4, "flags%02X", flags);
 589
 590         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 591         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 592         if (addr->proto == QETH_PROT_IPV6) {
 593                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 594                        sizeof(struct in6_addr));
 595                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 596                 memcpy(cmd->data.setdelip6.mask, netmask,
 597                        sizeof(struct in6_addr));
 598                 cmd->data.setdelip6.flags = flags;
 599         } else {
 600                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 601                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 602                 cmd->data.setdelip4.flags = flags;
 603         }
 604
 605         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 606
 607         return rc;
 608 }
 609
 610 static int qeth_l3_send_setrouting(struct qeth_card *card,
 611         enum qeth_routing_types type, enum qeth_prot_versions prot)
 612 {
 613         int rc;
 614         struct qeth_ipa_cmd *cmd;
 615         struct qeth_cmd_buffer *iob;
 616
 617         QETH_DBF_TEXT(TRACE, 4, "setroutg");
 618         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 619         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 620         cmd->data.setrtg.type = (type);
 621         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 622
 623         return rc;
 624 }
 625
 626 static void qeth_l3_correct_routing_type(struct qeth_card *card,
 627                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 628 {
 629         if (card->info.type == QETH_CARD_TYPE_IQD) {
 630                 switch (*type) {
 631                 case NO_ROUTER:
 632                 case PRIMARY_CONNECTOR:
 633                 case SECONDARY_CONNECTOR:
 634                 case MULTICAST_ROUTER:
 635                         return;
 636                 default:
 637                         goto out_inval;
 638                 }
 639         } else {
 640                 switch (*type) {
 641                 case NO_ROUTER:
 642                 case PRIMARY_ROUTER:
 643                 case SECONDARY_ROUTER:
 644                         return;
 645                 case MULTICAST_ROUTER:
 646                         if (qeth_is_ipafunc_supported(card, prot,
 647                                                       IPA_OSA_MC_ROUTER))
 648                                 return;
 649                 default:
 650                         goto out_inval;
 651                 }
 652         }
 653 out_inval:
 654         *type = NO_ROUTER;
 655 }
 656
 657 int qeth_l3_setrouting_v4(struct qeth_card *card)
 658 {
 659         int rc;
 660
 661         QETH_DBF_TEXT(TRACE, 3, "setrtg4");
 662
 663         qeth_l3_correct_routing_type(card, &card->options.route4.type,
 664                                   QETH_PROT_IPV4);
 665
 666         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 667                                   QETH_PROT_IPV4);
 668         if (rc) {
 669                 card->options.route4.type = NO_ROUTER;
 670                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 671                         " on %s. Type set to 'no router'.\n", rc,
 672                         QETH_CARD_IFNAME(card));
 673         }
 674         return rc;
 675 }
 676
 677 int qeth_l3_setrouting_v6(struct qeth_card *card)
 678 {
 679         int rc = 0;
 680
 681         QETH_DBF_TEXT(TRACE, 3, "setrtg6");
 682 #ifdef CONFIG_QETH_IPV6
 683
 684         if (!qeth_is_supported(card, IPA_IPV6))
 685                 return 0;
 686         qeth_l3_correct_routing_type(card, &card->options.route6.type,
 687                                   QETH_PROT_IPV6);
 688
 689         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 690                                   QETH_PROT_IPV6);
 691         if (rc) {
 692                 card->options.route6.type = NO_ROUTER;
 693                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 694                         " on %s. Type set to 'no router'.\n", rc,
 695                         QETH_CARD_IFNAME(card));
 696         }
 697 #endif
 698         return rc;
 699 }
 700
 701 /*
 702  * IP address takeover related functions
 703  */
 704 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 705 {
 706
 707         struct qeth_ipato_entry *ipatoe, *tmp;
 708         unsigned long flags;
 709
 710         spin_lock_irqsave(&card->ip_lock, flags);
 711         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 712                 list_del(&ipatoe->entry);
 713                 kfree(ipatoe);
 714         }
 715         spin_unlock_irqrestore(&card->ip_lock, flags);
 716 }
 717
 718 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 719                                 struct qeth_ipato_entry *new)
 720 {
 721         struct qeth_ipato_entry *ipatoe;
 722         unsigned long flags;
 723         int rc = 0;
 724
 725         QETH_DBF_TEXT(TRACE, 2, "addipato");
 726         spin_lock_irqsave(&card->ip_lock, flags);
 727         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 728                 if (ipatoe->proto != new->proto)
 729                         continue;
 730                 if (!memcmp(ipatoe->addr, new->addr,
 731                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 732                     (ipatoe->mask_bits == new->mask_bits)) {
 733                         rc = -EEXIST;
 734                         break;
 735                 }
 736         }
 737         if (!rc)
 738                 list_add_tail(&new->entry, &card->ipato.entries);
 739
 740         spin_unlock_irqrestore(&card->ip_lock, flags);
 741         return rc;
 742 }
 743
 744 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 745                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 746 {
 747         struct qeth_ipato_entry *ipatoe, *tmp;
 748         unsigned long flags;
 749
 750         QETH_DBF_TEXT(TRACE, 2, "delipato");
 751         spin_lock_irqsave(&card->ip_lock, flags);
 752         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 753                 if (ipatoe->proto != proto)
 754                         continue;
 755                 if (!memcmp(ipatoe->addr, addr,
 756                             (proto == QETH_PROT_IPV4)? 4:16) &&
 757                     (ipatoe->mask_bits == mask_bits)) {
 758                         list_del(&ipatoe->entry);
 759                         kfree(ipatoe);
 760                 }
 761         }
 762         spin_unlock_irqrestore(&card->ip_lock, flags);
 763 }
 764
 765 /*
 766  * VIPA related functions
 767  */
 768 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 769               const u8 *addr)
 770 {
 771         struct qeth_ipaddr *ipaddr;
 772         unsigned long flags;
 773         int rc = 0;
 774
 775         ipaddr = qeth_l3_get_addr_buffer(proto);
 776         if (ipaddr) {
 777                 if (proto == QETH_PROT_IPV4) {
 778                         QETH_DBF_TEXT(TRACE, 2, "addvipa4");
 779                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 780                         ipaddr->u.a4.mask = 0;
 781                 } else if (proto == QETH_PROT_IPV6) {
 782                         QETH_DBF_TEXT(TRACE, 2, "addvipa6");
 783                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 784                         ipaddr->u.a6.pfxlen = 0;
 785                 }
 786                 ipaddr->type = QETH_IP_TYPE_VIPA;
 787                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 788                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 789         } else
 790                 return -ENOMEM;
 791         spin_lock_irqsave(&card->ip_lock, flags);
 792         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 793             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 794                 rc = -EEXIST;
 795         spin_unlock_irqrestore(&card->ip_lock, flags);
 796         if (rc) {
 797                 return rc;
 798         }
 799         if (!qeth_l3_add_ip(card, ipaddr))
 800                 kfree(ipaddr);
 801         qeth_l3_set_ip_addr_list(card);
 802         return rc;
 803 }
 804
 805 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 806               const u8 *addr)
 807 {
 808         struct qeth_ipaddr *ipaddr;
 809
 810         ipaddr = qeth_l3_get_addr_buffer(proto);
 811         if (ipaddr) {
 812                 if (proto == QETH_PROT_IPV4) {
 813                         QETH_DBF_TEXT(TRACE, 2, "delvipa4");
 814                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 815                         ipaddr->u.a4.mask = 0;
 816                 } else if (proto == QETH_PROT_IPV6) {
 817                         QETH_DBF_TEXT(TRACE, 2, "delvipa6");
 818                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 819                         ipaddr->u.a6.pfxlen = 0;
 820                 }
 821                 ipaddr->type = QETH_IP_TYPE_VIPA;
 822         } else
 823                 return;
 824         if (!qeth_l3_delete_ip(card, ipaddr))
 825                 kfree(ipaddr);
 826         qeth_l3_set_ip_addr_list(card);
 827 }
 828
 829 /*
 830  * proxy ARP related functions
 831  */
 832 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 833               const u8 *addr)
 834 {
 835         struct qeth_ipaddr *ipaddr;
 836         unsigned long flags;
 837         int rc = 0;
 838
 839         ipaddr = qeth_l3_get_addr_buffer(proto);
 840         if (ipaddr) {
 841                 if (proto == QETH_PROT_IPV4) {
 842                         QETH_DBF_TEXT(TRACE, 2, "addrxip4");
 843                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 844                         ipaddr->u.a4.mask = 0;
 845                 } else if (proto == QETH_PROT_IPV6) {
 846                         QETH_DBF_TEXT(TRACE, 2, "addrxip6");
 847                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 848                         ipaddr->u.a6.pfxlen = 0;
 849                 }
 850                 ipaddr->type = QETH_IP_TYPE_RXIP;
 851                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 852                 ipaddr->del_flags = 0;
 853         } else
 854                 return -ENOMEM;
 855         spin_lock_irqsave(&card->ip_lock, flags);
 856         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 857             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 858                 rc = -EEXIST;
 859         spin_unlock_irqrestore(&card->ip_lock, flags);
 860         if (rc) {
 861                 return rc;
 862         }
 863         if (!qeth_l3_add_ip(card, ipaddr))
 864                 kfree(ipaddr);
 865         qeth_l3_set_ip_addr_list(card);
 866         return 0;
 867 }
 868
 869 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 870                         const u8 *addr)
 871 {
 872         struct qeth_ipaddr *ipaddr;
 873
 874         ipaddr = qeth_l3_get_addr_buffer(proto);
 875         if (ipaddr) {
 876                 if (proto == QETH_PROT_IPV4) {
 877                         QETH_DBF_TEXT(TRACE, 2, "addrxip4");
 878                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 879                         ipaddr->u.a4.mask = 0;
 880                 } else if (proto == QETH_PROT_IPV6) {
 881                         QETH_DBF_TEXT(TRACE, 2, "addrxip6");
 882                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 883                         ipaddr->u.a6.pfxlen = 0;
 884                 }
 885                 ipaddr->type = QETH_IP_TYPE_RXIP;
 886         } else
 887                 return;
 888         if (!qeth_l3_delete_ip(card, ipaddr))
 889                 kfree(ipaddr);
 890         qeth_l3_set_ip_addr_list(card);
 891 }
 892
 893 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 894                                 struct qeth_ipaddr *addr)
 895 {
 896         char buf[50];
 897         int rc = 0;
 898         int cnt = 3;
 899
 900         if (addr->proto == QETH_PROT_IPV4) {
 901                 QETH_DBF_TEXT(TRACE, 2, "setaddr4");
 902                 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
 903         } else if (addr->proto == QETH_PROT_IPV6) {
 904                 QETH_DBF_TEXT(TRACE, 2, "setaddr6");
 905                 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
 906                 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 907         } else {
 908                 QETH_DBF_TEXT(TRACE, 2, "setaddr?");
 909                 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
 910         }
 911         do {
 912                 if (addr->is_multicast)
 913                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 914                 else
 915                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 916                                         addr->set_flags);
 917                 if (rc)
 918                         QETH_DBF_TEXT(TRACE, 2, "failed");
 919         } while ((--cnt > 0) && rc);
 920         if (rc) {
 921                 QETH_DBF_TEXT(TRACE, 2, "FAILED");
 922                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 923                 dev_warn(&card->gdev->dev,
 924                         "Registering IP address %s failed\n", buf);
 925         }
 926         return rc;
 927 }
 928
 929 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 930                                                 struct qeth_ipaddr *addr)
 931 {
 932         int rc = 0;
 933
 934         if (addr->proto == QETH_PROT_IPV4) {
 935                 QETH_DBF_TEXT(TRACE, 2, "deladdr4");
 936                 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
 937         } else if (addr->proto == QETH_PROT_IPV6) {
 938                 QETH_DBF_TEXT(TRACE, 2, "deladdr6");
 939                 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
 940                 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 941         } else {
 942                 QETH_DBF_TEXT(TRACE, 2, "deladdr?");
 943                 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
 944         }
 945         if (addr->is_multicast)
 946                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 947         else
 948                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 949                                         addr->del_flags);
 950         if (rc)
 951                 QETH_DBF_TEXT(TRACE, 2, "failed");
 952
 953         return rc;
 954 }
 955
 956 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 957 {
 958         if (cast_type == RTN_MULTICAST)
 959                 return QETH_CAST_MULTICAST;
 960         if (cast_type == RTN_BROADCAST)
 961                 return QETH_CAST_BROADCAST;
 962         return QETH_CAST_UNICAST;
 963 }
 964
 965 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 966 {
 967         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 968         if (cast_type == RTN_MULTICAST)
 969                 return ct | QETH_CAST_MULTICAST;
 970         if (cast_type == RTN_ANYCAST)
 971                 return ct | QETH_CAST_ANYCAST;
 972         if (cast_type == RTN_BROADCAST)
 973                 return ct | QETH_CAST_BROADCAST;
 974         return ct | QETH_CAST_UNICAST;
 975 }
 976
 977 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
 978                                         __u32 mode)
 979 {
 980         int rc;
 981         struct qeth_cmd_buffer *iob;
 982         struct qeth_ipa_cmd *cmd;
 983
 984         QETH_DBF_TEXT(TRACE, 4, "adpmode");
 985
 986         iob = qeth_get_adapter_cmd(card, command,
 987                                    sizeof(struct qeth_ipacmd_setadpparms));
 988         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 989         cmd->data.setadapterparms.data.mode = mode;
 990         rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
 991                                NULL);
 992         return rc;
 993 }
 994
 995 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
 996 {
 997         int rc;
 998
 999         QETH_DBF_TEXT(TRACE, 4, "adphstr");
1000
1001         if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1002                 rc = qeth_l3_send_setadp_mode(card,
1003                                         IPA_SETADP_SET_BROADCAST_MODE,
1004                                         card->options.broadcast_mode);
1005                 if (rc)
1006                         QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1007                                    "device %s: x%x\n",
1008                                    CARD_BUS_ID(card), rc);
1009                 rc = qeth_l3_send_setadp_mode(card,
1010                                         IPA_SETADP_ALTER_MAC_ADDRESS,
1011                                         card->options.macaddr_mode);
1012                 if (rc)
1013                         QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1014                                    "device %s: x%x\n", CARD_BUS_ID(card), rc);
1015                 return rc;
1016         }
1017         if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1018                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1019                            "to set broadcast mode, using ALLRINGS "
1020                            "on device %s:\n", CARD_BUS_ID(card));
1021         if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1022                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1023                            "to set macaddr mode, using NONCANONICAL "
1024                            "on device %s:\n", CARD_BUS_ID(card));
1025         return 0;
1026 }
1027
1028 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1029 {
1030         int rc;
1031
1032         QETH_DBF_TEXT(SETUP, 2, "setadprm");
1033
1034         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1035                 dev_info(&card->gdev->dev,
1036                         "set adapter parameters not supported.\n");
1037                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1038                 return 0;
1039         }
1040         rc = qeth_query_setadapterparms(card);
1041         if (rc) {
1042                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1043                         "0x%x\n", card->gdev->dev.bus_id, rc);
1044                 return rc;
1045         }
1046         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1047                 rc = qeth_setadpparms_change_macaddr(card);
1048                 if (rc)
1049                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1050                                 " address failed\n");
1051         }
1052
1053         if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1054             (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1055                 rc = qeth_l3_setadapter_hstr(card);
1056
1057         return rc;
1058 }
1059
1060 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1061                         struct qeth_reply *reply, unsigned long data)
1062 {
1063         struct qeth_ipa_cmd *cmd;
1064
1065         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
1066
1067         cmd = (struct qeth_ipa_cmd *) data;
1068         if (cmd->hdr.return_code == 0) {
1069                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1070                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1071                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1072                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1073                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1074         }
1075         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1076             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1077                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1078                 QETH_DBF_TEXT_(TRACE, 3, "csum:%d", card->info.csum_mask);
1079         }
1080         return 0;
1081 }
1082
1083 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1084         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1085         __u16 len, enum qeth_prot_versions prot)
1086 {
1087         struct qeth_cmd_buffer *iob;
1088         struct qeth_ipa_cmd *cmd;
1089
1090         QETH_DBF_TEXT(TRACE, 4, "getasscm");
1091         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1092
1093         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1094         cmd->data.setassparms.hdr.assist_no = ipa_func;
1095         cmd->data.setassparms.hdr.length = 8 + len;
1096         cmd->data.setassparms.hdr.command_code = cmd_code;
1097         cmd->data.setassparms.hdr.return_code = 0;
1098         cmd->data.setassparms.hdr.seq_no = 0;
1099
1100         return iob;
1101 }
1102
1103 static int qeth_l3_send_setassparms(struct qeth_card *card,
1104         struct qeth_cmd_buffer *iob, __u16 len, long data,
1105         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1106                 unsigned long),
1107         void *reply_param)
1108 {
1109         int rc;
1110         struct qeth_ipa_cmd *cmd;
1111
1112         QETH_DBF_TEXT(TRACE, 4, "sendassp");
1113
1114         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1115         if (len <= sizeof(__u32))
1116                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1117         else   /* (len > sizeof(__u32)) */
1118                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1119
1120         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1121         return rc;
1122 }
1123
1124 #ifdef CONFIG_QETH_IPV6
1125 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1126                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1127 {
1128         int rc;
1129         struct qeth_cmd_buffer *iob;
1130
1131         QETH_DBF_TEXT(TRACE, 4, "simassp6");
1132         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1133                                        0, QETH_PROT_IPV6);
1134         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1135                                    qeth_l3_default_setassparms_cb, NULL);
1136         return rc;
1137 }
1138 #endif
1139
1140 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1141                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1142 {
1143         int rc;
1144         int length = 0;
1145         struct qeth_cmd_buffer *iob;
1146
1147         QETH_DBF_TEXT(TRACE, 4, "simassp4");
1148         if (data)
1149                 length = sizeof(__u32);
1150         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1151                                        length, QETH_PROT_IPV4);
1152         rc = qeth_l3_send_setassparms(card, iob, length, data,
1153                                    qeth_l3_default_setassparms_cb, NULL);
1154         return rc;
1155 }
1156
1157 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1158 {
1159         int rc;
1160
1161         QETH_DBF_TEXT(TRACE, 3, "ipaarp");
1162
1163         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1164                 dev_info(&card->gdev->dev,
1165                         "ARP processing not supported on %s!\n",
1166                         QETH_CARD_IFNAME(card));
1167                 return 0;
1168         }
1169         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1170                                         IPA_CMD_ASS_START, 0);
1171         if (rc) {
1172                 dev_warn(&card->gdev->dev,
1173                         "Starting ARP processing support for %s failed\n",
1174                         QETH_CARD_IFNAME(card));
1175         }
1176         return rc;
1177 }
1178
1179 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1180 {
1181         int rc;
1182
1183         QETH_DBF_TEXT(TRACE, 3, "ipaipfrg");
1184
1185         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1186                 dev_info(&card->gdev->dev,
1187                         "Hardware IP fragmentation not supported on %s\n",
1188                         QETH_CARD_IFNAME(card));
1189                 return  -EOPNOTSUPP;
1190         }
1191
1192         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1193                                           IPA_CMD_ASS_START, 0);
1194         if (rc) {
1195                 dev_warn(&card->gdev->dev,
1196                         "Starting IP fragmentation support for %s failed\n",
1197                         QETH_CARD_IFNAME(card));
1198         } else
1199                 dev_info(&card->gdev->dev,
1200                         "Hardware IP fragmentation enabled \n");
1201         return rc;
1202 }
1203
1204 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1205 {
1206         int rc;
1207
1208         QETH_DBF_TEXT(TRACE, 3, "stsrcmac");
1209
1210         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1211                 dev_info(&card->gdev->dev,
1212                         "Inbound source MAC-address not supported on %s\n",
1213                         QETH_CARD_IFNAME(card));
1214                 return -EOPNOTSUPP;
1215         }
1216
1217         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1218                                           IPA_CMD_ASS_START, 0);
1219         if (rc)
1220                 dev_warn(&card->gdev->dev,
1221                         "Starting source MAC-address support for %s failed\n",
1222                         QETH_CARD_IFNAME(card));
1223         return rc;
1224 }
1225
1226 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1227 {
1228         int rc = 0;
1229
1230         QETH_DBF_TEXT(TRACE, 3, "strtvlan");
1231
1232         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1233                 dev_info(&card->gdev->dev,
1234                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1235                 return -EOPNOTSUPP;
1236         }
1237
1238         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1239                                           IPA_CMD_ASS_START, 0);
1240         if (rc) {
1241                 dev_warn(&card->gdev->dev,
1242                         "Starting VLAN support for %s failed\n",
1243                         QETH_CARD_IFNAME(card));
1244         } else {
1245                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1246         }
1247         return rc;
1248 }
1249
1250 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1251 {
1252         int rc;
1253
1254         QETH_DBF_TEXT(TRACE, 3, "stmcast");
1255
1256         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1257                 dev_info(&card->gdev->dev,
1258                         "Multicast not supported on %s\n",
1259                         QETH_CARD_IFNAME(card));
1260                 return -EOPNOTSUPP;
1261         }
1262
1263         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1264                                           IPA_CMD_ASS_START, 0);
1265         if (rc) {
1266                 dev_warn(&card->gdev->dev,
1267                         "Starting multicast support for %s failed\n",
1268                         QETH_CARD_IFNAME(card));
1269         } else {
1270                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1271                 card->dev->flags |= IFF_MULTICAST;
1272         }
1273         return rc;
1274 }
1275
1276 static int qeth_l3_query_ipassists_cb(struct qeth_card *card,
1277                 struct qeth_reply *reply, unsigned long data)
1278 {
1279         struct qeth_ipa_cmd *cmd;
1280
1281         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
1282
1283         cmd = (struct qeth_ipa_cmd *) data;
1284         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
1285                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
1286                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1287         } else {
1288                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
1289                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1290         }
1291         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
1292         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
1293         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
1294         return 0;
1295 }
1296
1297 static int qeth_l3_query_ipassists(struct qeth_card *card,
1298                                 enum qeth_prot_versions prot)
1299 {
1300         int rc;
1301         struct qeth_cmd_buffer *iob;
1302
1303         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
1304         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
1305         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL);
1306         return rc;
1307 }
1308
1309 #ifdef CONFIG_QETH_IPV6
1310 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1311 {
1312         int rc;
1313
1314         QETH_DBF_TEXT(TRACE, 3, "softipv6");
1315
1316         if (card->info.type == QETH_CARD_TYPE_IQD)
1317                 goto out;
1318
1319         rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6);
1320         if (rc) {
1321                 dev_err(&card->gdev->dev,
1322                         "Activating IPv6 support for %s failed\n",
1323                         QETH_CARD_IFNAME(card));
1324                 return rc;
1325         }
1326         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1327                                           IPA_CMD_ASS_START, 3);
1328         if (rc) {
1329                 dev_err(&card->gdev->dev,
1330                         "Activating IPv6 support for %s failed\n",
1331                         QETH_CARD_IFNAME(card));
1332                 return rc;
1333         }
1334         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1335                                                IPA_CMD_ASS_START);
1336         if (rc) {
1337                 dev_err(&card->gdev->dev,
1338                         "Activating IPv6 support for %s failed\n",
1339                          QETH_CARD_IFNAME(card));
1340                 return rc;
1341         }
1342         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1343                                                IPA_CMD_ASS_START);
1344         if (rc) {
1345                 dev_warn(&card->gdev->dev,
1346                         "Enabling the passthrough mode for %s failed\n",
1347                         QETH_CARD_IFNAME(card));
1348                 return rc;
1349         }
1350 out:
1351         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1352         return 0;
1353 }
1354 #endif
1355
1356 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1357 {
1358         int rc = 0;
1359
1360         QETH_DBF_TEXT(TRACE, 3, "strtipv6");
1361
1362         if (!qeth_is_supported(card, IPA_IPV6)) {
1363                 dev_info(&card->gdev->dev,
1364                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1365                 return 0;
1366         }
1367 #ifdef CONFIG_QETH_IPV6
1368         rc = qeth_l3_softsetup_ipv6(card);
1369 #endif
1370         return rc ;
1371 }
1372
1373 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1374 {
1375         int rc;
1376
1377         QETH_DBF_TEXT(TRACE, 3, "stbrdcst");
1378         card->info.broadcast_capable = 0;
1379         if (!qeth_is_supported(card, IPA_FILTERING)) {
1380                 dev_info(&card->gdev->dev,
1381                         "Broadcast not supported on %s\n",
1382                         QETH_CARD_IFNAME(card));
1383                 rc = -EOPNOTSUPP;
1384                 goto out;
1385         }
1386         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1387                                           IPA_CMD_ASS_START, 0);
1388         if (rc) {
1389                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1390                         "%s failed\n", QETH_CARD_IFNAME(card));
1391                 goto out;
1392         }
1393
1394         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1395                                           IPA_CMD_ASS_CONFIGURE, 1);
1396         if (rc) {
1397                 dev_warn(&card->gdev->dev,
1398                         "Setting up broadcast filtering for %s failed\n",
1399                         QETH_CARD_IFNAME(card));
1400                 goto out;
1401         }
1402         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1403         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1404         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1405                                           IPA_CMD_ASS_ENABLE, 1);
1406         if (rc) {
1407                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1408                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1409                 goto out;
1410         }
1411         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1412 out:
1413         if (card->info.broadcast_capable)
1414                 card->dev->flags |= IFF_BROADCAST;
1415         else
1416                 card->dev->flags &= ~IFF_BROADCAST;
1417         return rc;
1418 }
1419
1420 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1421 {
1422         int rc;
1423
1424         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1425                                           IPA_CMD_ASS_START, 0);
1426         if (rc) {
1427                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1428                         "failed, using SW checksumming\n",
1429                         QETH_CARD_IFNAME(card));
1430                 return rc;
1431         }
1432         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1433                                           IPA_CMD_ASS_ENABLE,
1434                                           card->info.csum_mask);
1435         if (rc) {
1436                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1437                         "failed, using SW checksumming\n",
1438                         QETH_CARD_IFNAME(card));
1439                 return rc;
1440         }
1441         return 0;
1442 }
1443
1444 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1445 {
1446         int rc = 0;
1447
1448         QETH_DBF_TEXT(TRACE, 3, "strtcsum");
1449
1450         if (card->options.checksum_type == NO_CHECKSUMMING) {
1451                 dev_info(&card->gdev->dev,
1452                         "Using no checksumming on %s.\n",
1453                         QETH_CARD_IFNAME(card));
1454                 return 0;
1455         }
1456         if (card->options.checksum_type == SW_CHECKSUMMING) {
1457                 dev_info(&card->gdev->dev,
1458                         "Using SW checksumming on %s.\n",
1459                         QETH_CARD_IFNAME(card));
1460                 return 0;
1461         }
1462         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1463                 dev_info(&card->gdev->dev,
1464                         "Inbound HW Checksumming not "
1465                         "supported on %s,\ncontinuing "
1466                         "using Inbound SW Checksumming\n",
1467                         QETH_CARD_IFNAME(card));
1468                 card->options.checksum_type = SW_CHECKSUMMING;
1469                 return 0;
1470         }
1471         rc = qeth_l3_send_checksum_command(card);
1472         if (!rc)
1473                 dev_info(&card->gdev->dev,
1474                         "HW Checksumming (inbound) enabled\n");
1475
1476         return rc;
1477 }
1478
1479 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1480 {
1481         int rc;
1482
1483         QETH_DBF_TEXT(TRACE, 3, "sttso");
1484
1485         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1486                 dev_info(&card->gdev->dev,
1487                         "Outbound TSO not supported on %s\n",
1488                         QETH_CARD_IFNAME(card));
1489                 rc = -EOPNOTSUPP;
1490         } else {
1491                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1492                                                 IPA_CMD_ASS_START, 0);
1493                 if (rc)
1494                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1495                                 "segmentation offload for %s failed\n",
1496                                 QETH_CARD_IFNAME(card));
1497                 else
1498                         dev_info(&card->gdev->dev,
1499                                 "Outbound TSO enabled\n");
1500         }
1501         if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) {
1502                 card->options.large_send = QETH_LARGE_SEND_NO;
1503                 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
1504         }
1505         return rc;
1506 }
1507
1508 static int qeth_l3_start_ipassists(struct qeth_card *card)
1509 {
1510         QETH_DBF_TEXT(TRACE, 3, "strtipas");
1511         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1512         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1513         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1514         qeth_l3_start_ipa_vlan(card);           /* go on*/
1515         qeth_l3_start_ipa_multicast(card);              /* go on*/
1516         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1517         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1518         qeth_l3_start_ipa_checksum(card);               /* go on*/
1519         qeth_l3_start_ipa_tso(card);            /* go on*/
1520         return 0;
1521 }
1522
1523 static int qeth_l3_put_unique_id(struct qeth_card *card)
1524 {
1525
1526         int rc = 0;
1527         struct qeth_cmd_buffer *iob;
1528         struct qeth_ipa_cmd *cmd;
1529
1530         QETH_DBF_TEXT(TRACE, 2, "puniqeid");
1531
1532         if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
1533                 UNIQUE_ID_NOT_BY_CARD)
1534                 return -1;
1535         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
1536                                      QETH_PROT_IPV6);
1537         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1538         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1539                                 card->info.unique_id;
1540         memcpy(&cmd->data.create_destroy_addr.unique_id[0],
1541                card->dev->dev_addr, OSA_ADDR_LEN);
1542         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
1543         return rc;
1544 }
1545
1546 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1547                 struct qeth_reply *reply, unsigned long data)
1548 {
1549         struct qeth_ipa_cmd *cmd;
1550
1551         cmd = (struct qeth_ipa_cmd *) data;
1552         if (cmd->hdr.return_code == 0)
1553                 memcpy(card->dev->dev_addr,
1554                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1555         else
1556                 random_ether_addr(card->dev->dev_addr);
1557
1558         return 0;
1559 }
1560
1561 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1562 {
1563         int rc = 0;
1564         struct qeth_cmd_buffer *iob;
1565         struct qeth_ipa_cmd *cmd;
1566
1567         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1568
1569         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1570                                      QETH_PROT_IPV6);
1571         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1572         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1573                         card->info.unique_id;
1574
1575         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1576                                 NULL);
1577         return rc;
1578 }
1579
1580 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1581                 struct qeth_reply *reply, unsigned long data)
1582 {
1583         struct qeth_ipa_cmd *cmd;
1584
1585         cmd = (struct qeth_ipa_cmd *) data;
1586         if (cmd->hdr.return_code == 0)
1587                 card->info.unique_id = *((__u16 *)
1588                                 &cmd->data.create_destroy_addr.unique_id[6]);
1589         else {
1590                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1591                                         UNIQUE_ID_NOT_BY_CARD;
1592                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1593                         "generate a unique ID\n");
1594         }
1595         return 0;
1596 }
1597
1598 static int qeth_l3_get_unique_id(struct qeth_card *card)
1599 {
1600         int rc = 0;
1601         struct qeth_cmd_buffer *iob;
1602         struct qeth_ipa_cmd *cmd;
1603
1604         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1605
1606         if (!qeth_is_supported(card, IPA_IPV6)) {
1607                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1608                                         UNIQUE_ID_NOT_BY_CARD;
1609                 return 0;
1610         }
1611
1612         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1613                                      QETH_PROT_IPV6);
1614         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1615         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1616                         card->info.unique_id;
1617
1618         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1619         return rc;
1620 }
1621
1622 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1623                                 struct net_device *dev)
1624 {
1625         if (dev->type == ARPHRD_IEEE802_TR)
1626                 ip_tr_mc_map(ipm, mac);
1627         else
1628                 ip_eth_mc_map(ipm, mac);
1629 }
1630
1631 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1632 {
1633         struct qeth_ipaddr *ipm;
1634         struct ip_mc_list *im4;
1635         char buf[MAX_ADDR_LEN];
1636
1637         QETH_DBF_TEXT(TRACE, 4, "addmc");
1638         for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
1639                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1640                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1641                 if (!ipm)
1642                         continue;
1643                 ipm->u.a4.addr = im4->multiaddr;
1644                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1645                 ipm->is_multicast = 1;
1646                 if (!qeth_l3_add_ip(card, ipm))
1647                         kfree(ipm);
1648         }
1649 }
1650
1651 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1652 {
1653         struct in_device *in_dev;
1654         struct vlan_group *vg;
1655         int i;
1656
1657         QETH_DBF_TEXT(TRACE, 4, "addmcvl");
1658         if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1659                 return;
1660
1661         vg = card->vlangrp;
1662         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1663                 struct net_device *netdev = vlan_group_get_device(vg, i);
1664                 if (netdev == NULL ||
1665                     !(netdev->flags & IFF_UP))
1666                         continue;
1667                 in_dev = in_dev_get(netdev);
1668                 if (!in_dev)
1669                         continue;
1670                 read_lock(&in_dev->mc_list_lock);
1671                 qeth_l3_add_mc(card, in_dev);
1672                 read_unlock(&in_dev->mc_list_lock);
1673                 in_dev_put(in_dev);
1674         }
1675 }
1676
1677 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1678 {
1679         struct in_device *in4_dev;
1680
1681         QETH_DBF_TEXT(TRACE, 4, "chkmcv4");
1682         in4_dev = in_dev_get(card->dev);
1683         if (in4_dev == NULL)
1684                 return;
1685         read_lock(&in4_dev->mc_list_lock);
1686         qeth_l3_add_mc(card, in4_dev);
1687         qeth_l3_add_vlan_mc(card);
1688         read_unlock(&in4_dev->mc_list_lock);
1689         in_dev_put(in4_dev);
1690 }
1691
1692 #ifdef CONFIG_QETH_IPV6
1693 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1694 {
1695         struct qeth_ipaddr *ipm;
1696         struct ifmcaddr6 *im6;
1697         char buf[MAX_ADDR_LEN];
1698
1699         QETH_DBF_TEXT(TRACE, 4, "addmc6");
1700         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1701                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1702                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1703                 if (!ipm)
1704                         continue;
1705                 ipm->is_multicast = 1;
1706                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1707                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1708                        sizeof(struct in6_addr));
1709                 if (!qeth_l3_add_ip(card, ipm))
1710                         kfree(ipm);
1711         }
1712 }
1713
1714 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1715 {
1716         struct inet6_dev *in_dev;
1717         struct vlan_group *vg;
1718         int i;
1719
1720         QETH_DBF_TEXT(TRACE, 4, "admc6vl");
1721         if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1722                 return;
1723
1724         vg = card->vlangrp;
1725         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1726                 struct net_device *netdev = vlan_group_get_device(vg, i);
1727                 if (netdev == NULL ||
1728                     !(netdev->flags & IFF_UP))
1729                         continue;
1730                 in_dev = in6_dev_get(netdev);
1731                 if (!in_dev)
1732                         continue;
1733                 read_lock_bh(&in_dev->lock);
1734                 qeth_l3_add_mc6(card, in_dev);
1735                 read_unlock_bh(&in_dev->lock);
1736                 in6_dev_put(in_dev);
1737         }
1738 }
1739
1740 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1741 {
1742         struct inet6_dev *in6_dev;
1743
1744         QETH_DBF_TEXT(TRACE, 4, "chkmcv6");
1745         if (!qeth_is_supported(card, IPA_IPV6))
1746                 return ;
1747         in6_dev = in6_dev_get(card->dev);
1748         if (in6_dev == NULL)
1749                 return;
1750         read_lock_bh(&in6_dev->lock);
1751         qeth_l3_add_mc6(card, in6_dev);
1752         qeth_l3_add_vlan_mc6(card);
1753         read_unlock_bh(&in6_dev->lock);
1754         in6_dev_put(in6_dev);
1755 }
1756 #endif /* CONFIG_QETH_IPV6 */
1757
1758 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1759                         unsigned short vid)
1760 {
1761         struct in_device *in_dev;
1762         struct in_ifaddr *ifa;
1763         struct qeth_ipaddr *addr;
1764
1765         QETH_DBF_TEXT(TRACE, 4, "frvaddr4");
1766
1767         in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1768         if (!in_dev)
1769                 return;
1770         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1771                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1772                 if (addr) {
1773                         addr->u.a4.addr = ifa->ifa_address;
1774                         addr->u.a4.mask = ifa->ifa_mask;
1775                         addr->type = QETH_IP_TYPE_NORMAL;
1776                         if (!qeth_l3_delete_ip(card, addr))
1777                                 kfree(addr);
1778                 }
1779         }
1780         in_dev_put(in_dev);
1781 }
1782
1783 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1784                         unsigned short vid)
1785 {
1786 #ifdef CONFIG_QETH_IPV6
1787         struct inet6_dev *in6_dev;
1788         struct inet6_ifaddr *ifa;
1789         struct qeth_ipaddr *addr;
1790
1791         QETH_DBF_TEXT(TRACE, 4, "frvaddr6");
1792
1793         in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1794         if (!in6_dev)
1795                 return;
1796         for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next) {
1797                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1798                 if (addr) {
1799                         memcpy(&addr->u.a6.addr, &ifa->addr,
1800                                sizeof(struct in6_addr));
1801                         addr->u.a6.pfxlen = ifa->prefix_len;
1802                         addr->type = QETH_IP_TYPE_NORMAL;
1803                         if (!qeth_l3_delete_ip(card, addr))
1804                                 kfree(addr);
1805                 }
1806         }
1807         in6_dev_put(in6_dev);
1808 #endif /* CONFIG_QETH_IPV6 */
1809 }
1810
1811 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1812                         unsigned short vid)
1813 {
1814         if (!card->vlangrp)
1815                 return;
1816         qeth_l3_free_vlan_addresses4(card, vid);
1817         qeth_l3_free_vlan_addresses6(card, vid);
1818 }
1819
1820 static void qeth_l3_vlan_rx_register(struct net_device *dev,
1821                         struct vlan_group *grp)
1822 {
1823         struct qeth_card *card = dev->ml_priv;
1824         unsigned long flags;
1825
1826         QETH_DBF_TEXT(TRACE, 4, "vlanreg");
1827         spin_lock_irqsave(&card->vlanlock, flags);
1828         card->vlangrp = grp;
1829         spin_unlock_irqrestore(&card->vlanlock, flags);
1830 }
1831
1832 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1833 {
1834         struct net_device *vlandev;
1835         struct qeth_card *card = dev->ml_priv;
1836         struct in_device *in_dev;
1837
1838         if (card->info.type == QETH_CARD_TYPE_IQD)
1839                 return;
1840
1841         vlandev = vlan_group_get_device(card->vlangrp, vid);
1842         vlandev->neigh_setup = qeth_l3_neigh_setup;
1843
1844         in_dev = in_dev_get(vlandev);
1845 #ifdef CONFIG_SYSCTL
1846         neigh_sysctl_unregister(in_dev->arp_parms);
1847 #endif
1848         neigh_parms_release(&arp_tbl, in_dev->arp_parms);
1849
1850         in_dev->arp_parms = neigh_parms_alloc(vlandev, &arp_tbl);
1851 #ifdef CONFIG_SYSCTL
1852         neigh_sysctl_register(vlandev, in_dev->arp_parms, NET_IPV4,
1853                               NET_IPV4_NEIGH, "ipv4", NULL, NULL);
1854 #endif
1855         in_dev_put(in_dev);
1856         return;
1857 }
1858
1859 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1860 {
1861         struct qeth_card *card = dev->ml_priv;
1862         unsigned long flags;
1863
1864         QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
1865         spin_lock_irqsave(&card->vlanlock, flags);
1866         /* unregister IP addresses of vlan device */
1867         qeth_l3_free_vlan_addresses(card, vid);
1868         vlan_group_set_device(card->vlangrp, vid, NULL);
1869         spin_unlock_irqrestore(&card->vlanlock, flags);
1870         qeth_l3_set_multicast_list(card->dev);
1871 }
1872
1873 static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card,
1874                         struct sk_buff *skb, struct qeth_hdr *hdr)
1875 {
1876         unsigned short vlan_id = 0;
1877         __be16 prot;
1878         struct iphdr *ip_hdr;
1879         unsigned char tg_addr[MAX_ADDR_LEN];
1880
1881         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1882                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1883                               ETH_P_IP);
1884                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1885                 case QETH_CAST_MULTICAST:
1886                         switch (prot) {
1887 #ifdef CONFIG_QETH_IPV6
1888                         case __constant_htons(ETH_P_IPV6):
1889                                 ndisc_mc_map((struct in6_addr *)
1890                                      skb->data + 24,
1891                                      tg_addr, card->dev, 0);
1892                                 break;
1893 #endif
1894                         case __constant_htons(ETH_P_IP):
1895                                 ip_hdr = (struct iphdr *)skb->data;
1896                                 (card->dev->type == ARPHRD_IEEE802_TR) ?
1897                                 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1898                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1899                                 break;
1900                         default:
1901                                 memcpy(tg_addr, card->dev->broadcast,
1902                                         card->dev->addr_len);
1903                         }
1904                         card->stats.multicast++;
1905                         skb->pkt_type = PACKET_MULTICAST;
1906                         break;
1907                 case QETH_CAST_BROADCAST:
1908                         memcpy(tg_addr, card->dev->broadcast,
1909                                 card->dev->addr_len);
1910                         card->stats.multicast++;
1911                         skb->pkt_type = PACKET_BROADCAST;
1912                         break;
1913                 case QETH_CAST_UNICAST:
1914                 case QETH_CAST_ANYCAST:
1915                 case QETH_CAST_NOCAST:
1916                 default:
1917                         skb->pkt_type = PACKET_HOST;
1918                         memcpy(tg_addr, card->dev->dev_addr,
1919                                 card->dev->addr_len);
1920                 }
1921                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1922                         card->dev->header_ops->create(skb, card->dev, prot,
1923                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1924                                 card->dev->addr_len);
1925                 else
1926                         card->dev->header_ops->create(skb, card->dev, prot,
1927                                 tg_addr, "FAKELL", card->dev->addr_len);
1928         }
1929
1930 #ifdef CONFIG_TR
1931         if (card->dev->type == ARPHRD_IEEE802_TR)
1932                 skb->protocol = tr_type_trans(skb, card->dev);
1933         else
1934 #endif
1935                 skb->protocol = eth_type_trans(skb, card->dev);
1936
1937         if (hdr->hdr.l3.ext_flags &
1938             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1939                 vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
1940                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1941         }
1942
1943         skb->ip_summed = card->options.checksum_type;
1944         if (card->options.checksum_type == HW_CHECKSUMMING) {
1945                 if ((hdr->hdr.l3.ext_flags &
1946                       (QETH_HDR_EXT_CSUM_HDR_REQ |
1947                        QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1948                      (QETH_HDR_EXT_CSUM_HDR_REQ |
1949                       QETH_HDR_EXT_CSUM_TRANSP_REQ))
1950                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1951                 else
1952                         skb->ip_summed = SW_CHECKSUMMING;
1953         }
1954
1955         return vlan_id;
1956 }
1957
1958 static void qeth_l3_process_inbound_buffer(struct qeth_card *card,
1959                             struct qeth_qdio_buffer *buf, int index)
1960 {
1961         struct qdio_buffer_element *element;
1962         struct sk_buff *skb;
1963         struct qeth_hdr *hdr;
1964         int offset;
1965         __u16 vlan_tag = 0;
1966         unsigned int len;
1967
1968         /* get first element of current buffer */
1969         element = (struct qdio_buffer_element *)&buf->buffer->element[0];
1970         offset = 0;
1971         if (card->options.performance_stats)
1972                 card->perf_stats.bufs_rec++;
1973         while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
1974                                        &offset, &hdr))) {
1975                 skb->dev = card->dev;
1976                 /* is device UP ? */
1977                 if (!(card->dev->flags & IFF_UP)) {
1978                         dev_kfree_skb_any(skb);
1979                         continue;
1980                 }
1981
1982                 switch (hdr->hdr.l3.id) {
1983                 case QETH_HEADER_TYPE_LAYER3:
1984                         vlan_tag = qeth_l3_rebuild_skb(card, skb, hdr);
1985                         len = skb->len;
1986                         if (vlan_tag)
1987                                 if (card->vlangrp)
1988                                         vlan_hwaccel_rx(skb, card->vlangrp,
1989                                                 vlan_tag);
1990                                 else {
1991                                         dev_kfree_skb_any(skb);
1992                                         continue;
1993                                 }
1994                         else
1995                                 netif_rx(skb);
1996                         break;
1997                 default:
1998                         dev_kfree_skb_any(skb);
1999                         QETH_DBF_TEXT(TRACE, 3, "inbunkno");
2000                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2001                         continue;
2002                 }
2003
2004                 card->dev->last_rx = jiffies;
2005                 card->stats.rx_packets++;
2006                 card->stats.rx_bytes += len;
2007         }
2008 }
2009
2010 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2011                         struct qeth_card *card)
2012 {
2013         int rc = 0;
2014         struct vlan_group *vg;
2015         int i;
2016
2017         vg = card->vlangrp;
2018         if (!vg)
2019                 return rc;
2020
2021         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
2022                 if (vlan_group_get_device(vg, i) == dev) {
2023                         rc = QETH_VLAN_CARD;
2024                         break;
2025                 }
2026         }
2027
2028         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2029                 return 0;
2030
2031         return rc;
2032 }
2033
2034 static int qeth_l3_verify_dev(struct net_device *dev)
2035 {
2036         struct qeth_card *card;
2037         unsigned long flags;
2038         int rc = 0;
2039
2040         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2041         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2042                 if (card->dev == dev) {
2043                         rc = QETH_REAL_CARD;
2044                         break;
2045                 }
2046                 rc = qeth_l3_verify_vlan_dev(dev, card);
2047                 if (rc)
2048                         break;
2049         }
2050         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2051
2052         return rc;
2053 }
2054
2055 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2056 {
2057         struct qeth_card *card = NULL;
2058         int rc;
2059
2060         rc = qeth_l3_verify_dev(dev);
2061         if (rc == QETH_REAL_CARD)
2062                 card = dev->ml_priv;
2063         else if (rc == QETH_VLAN_CARD)
2064                 card = vlan_dev_real_dev(dev)->ml_priv;
2065         if (card && card->options.layer2)
2066                 card = NULL;
2067         QETH_DBF_TEXT_(TRACE, 4, "%d", rc);
2068         return card ;
2069 }
2070
2071 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2072 {
2073         int rc = 0;
2074
2075         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2076         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2077
2078         qeth_set_allowed_threads(card, 0, 1);
2079         if (card->read.state == CH_STATE_UP &&
2080             card->write.state == CH_STATE_UP &&
2081             (card->state == CARD_STATE_UP)) {
2082                 if (recovery_mode)
2083                         qeth_l3_stop(card->dev);
2084                 else {
2085                         if (card->dev) {
2086                                 rtnl_lock();
2087                                 dev_close(card->dev);
2088                                 rtnl_unlock();
2089                         }
2090                 }
2091                 if (!card->use_hard_stop) {
2092                         rc = qeth_send_stoplan(card);
2093                         if (rc)
2094                                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2095                 }
2096                 card->state = CARD_STATE_SOFTSETUP;
2097         }
2098         if (card->state == CARD_STATE_SOFTSETUP) {
2099                 qeth_l3_clear_ip_list(card, !card->use_hard_stop, 1);
2100                 qeth_clear_ipacmd_list(card);
2101                 card->state = CARD_STATE_HARDSETUP;
2102         }
2103         if (card->state == CARD_STATE_HARDSETUP) {
2104                 if (!card->use_hard_stop &&
2105                     (card->info.type != QETH_CARD_TYPE_IQD)) {
2106                         rc = qeth_l3_put_unique_id(card);
2107                         if (rc)
2108                                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2109                 }
2110                 qeth_qdio_clear_card(card, 0);
2111                 qeth_clear_qdio_buffers(card);
2112                 qeth_clear_working_pool_list(card);
2113                 card->state = CARD_STATE_DOWN;
2114         }
2115         if (card->state == CARD_STATE_DOWN) {
2116                 qeth_clear_cmd_buffers(&card->read);
2117                 qeth_clear_cmd_buffers(&card->write);
2118         }
2119         card->use_hard_stop = 0;
2120         return rc;
2121 }
2122
2123 static void qeth_l3_set_multicast_list(struct net_device *dev)
2124 {
2125         struct qeth_card *card = dev->ml_priv;
2126
2127         QETH_DBF_TEXT(TRACE, 3, "setmulti");
2128         qeth_l3_delete_mc_addresses(card);
2129         qeth_l3_add_multicast_ipv4(card);
2130 #ifdef CONFIG_QETH_IPV6
2131         qeth_l3_add_multicast_ipv6(card);
2132 #endif
2133         qeth_l3_set_ip_addr_list(card);
2134         if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2135                 return;
2136         qeth_setadp_promisc_mode(card);
2137 }
2138
2139 static const char *qeth_l3_arp_get_error_cause(int *rc)
2140 {
2141         switch (*rc) {
2142         case QETH_IPA_ARP_RC_FAILED:
2143                 *rc = -EIO;
2144                 return "operation failed";
2145         case QETH_IPA_ARP_RC_NOTSUPP:
2146                 *rc = -EOPNOTSUPP;
2147                 return "operation not supported";
2148         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2149                 *rc = -EINVAL;
2150                 return "argument out of range";
2151         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2152                 *rc = -EOPNOTSUPP;
2153                 return "query operation not supported";
2154         case QETH_IPA_ARP_RC_Q_NO_DATA:
2155                 *rc = -ENOENT;
2156                 return "no query data available";
2157         default:
2158                 return "unknown error";
2159         }
2160 }
2161
2162 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2163 {
2164         int tmp;
2165         int rc;
2166
2167         QETH_DBF_TEXT(TRACE, 3, "arpstnoe");
2168
2169         /*
2170          * currently GuestLAN only supports the ARP assist function
2171          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2172          * thus we say EOPNOTSUPP for this ARP function
2173          */
2174         if (card->info.guestlan)
2175                 return -EOPNOTSUPP;
2176         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2177                 return -EOPNOTSUPP;
2178         }
2179         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2180                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2181                                           no_entries);
2182         if (rc) {
2183                 tmp = rc;
2184                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2185                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2186                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2187         }
2188         return rc;
2189 }
2190
2191 static void qeth_l3_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
2192                 struct qeth_arp_query_data *qdata, int entry_size,
2193                 int uentry_size)
2194 {
2195         char *entry_ptr;
2196         char *uentry_ptr;
2197         int i;
2198
2199         entry_ptr = (char *)&qdata->data;
2200         uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
2201         for (i = 0; i < qdata->no_entries; ++i) {
2202                 /* strip off 32 bytes "media specific information" */
2203                 memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
2204                 entry_ptr += entry_size;
2205                 uentry_ptr += uentry_size;
2206         }
2207 }
2208
2209 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2210                 struct qeth_reply *reply, unsigned long data)
2211 {
2212         struct qeth_ipa_cmd *cmd;
2213         struct qeth_arp_query_data *qdata;
2214         struct qeth_arp_query_info *qinfo;
2215         int entry_size;
2216         int uentry_size;
2217         int i;
2218
2219         QETH_DBF_TEXT(TRACE, 4, "arpquecb");
2220
2221         qinfo = (struct qeth_arp_query_info *) reply->param;
2222         cmd = (struct qeth_ipa_cmd *) data;
2223         if (cmd->hdr.return_code) {
2224                 QETH_DBF_TEXT_(TRACE, 4, "qaer1%i", cmd->hdr.return_code);
2225                 return 0;
2226         }
2227         if (cmd->data.setassparms.hdr.return_code) {
2228                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2229                 QETH_DBF_TEXT_(TRACE, 4, "qaer2%i", cmd->hdr.return_code);
2230                 return 0;
2231         }
2232         qdata = &cmd->data.setassparms.data.query_arp;
2233         switch (qdata->reply_bits) {
2234         case 5:
2235                 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
2236                 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2237                         uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
2238                 break;
2239         case 7:
2240                 /* fall through to default */
2241         default:
2242                 /* tr is the same as eth -> entry7 */
2243                 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
2244                 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2245                         uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
2246                 break;
2247         }
2248         /* check if there is enough room in userspace */
2249         if ((qinfo->udata_len - qinfo->udata_offset) <
2250                         qdata->no_entries * uentry_size){
2251                 QETH_DBF_TEXT_(TRACE, 4, "qaer3%i", -ENOMEM);
2252                 cmd->hdr.return_code = -ENOMEM;
2253                 goto out_error;
2254         }
2255         QETH_DBF_TEXT_(TRACE, 4, "anore%i",
2256                        cmd->data.setassparms.hdr.number_of_replies);
2257         QETH_DBF_TEXT_(TRACE, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
2258         QETH_DBF_TEXT_(TRACE, 4, "anoen%i", qdata->no_entries);
2259
2260         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
2261                 /* strip off "media specific information" */
2262                 qeth_l3_copy_arp_entries_stripped(qinfo, qdata, entry_size,
2263                                                uentry_size);
2264         } else
2265                 /*copy entries to user buffer*/
2266                 memcpy(qinfo->udata + qinfo->udata_offset,
2267                        (char *)&qdata->data, qdata->no_entries*uentry_size);
2268
2269         qinfo->no_entries += qdata->no_entries;
2270         qinfo->udata_offset += (qdata->no_entries*uentry_size);
2271         /* check if all replies received ... */
2272         if (cmd->data.setassparms.hdr.seq_no <
2273             cmd->data.setassparms.hdr.number_of_replies)
2274                 return 1;
2275         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2276         /* keep STRIP_ENTRIES flag so the user program can distinguish
2277          * stripped entries from normal ones */
2278         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2279                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2280         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2281         return 0;
2282 out_error:
2283         i = 0;
2284         memcpy(qinfo->udata, &i, 4);
2285         return 0;
2286 }
2287
2288 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2289                 struct qeth_cmd_buffer *iob, int len,
2290                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2291                         unsigned long),
2292                 void *reply_param)
2293 {
2294         QETH_DBF_TEXT(TRACE, 4, "sendarp");
2295
2296         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2297         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2298                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2299         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2300                                       reply_cb, reply_param);
2301 }
2302
2303 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2304 {
2305         struct qeth_cmd_buffer *iob;
2306         struct qeth_arp_query_info qinfo = {0, };
2307         int tmp;
2308         int rc;
2309
2310         QETH_DBF_TEXT(TRACE, 3, "arpquery");
2311
2312         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2313                                IPA_ARP_PROCESSING)) {
2314                 return -EOPNOTSUPP;
2315         }
2316         /* get size of userspace buffer and mask_bits -> 6 bytes */
2317         if (copy_from_user(&qinfo, udata, 6))
2318                 return -EFAULT;
2319         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2320         if (!qinfo.udata)
2321                 return -ENOMEM;
2322         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2323         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2324                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2325                                        sizeof(int), QETH_PROT_IPV4);
2326
2327         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2328                                    QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2329                                    qeth_l3_arp_query_cb, (void *)&qinfo);
2330         if (rc) {
2331                 tmp = rc;
2332                 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on %s: %s "
2333                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2334                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2335                 if (copy_to_user(udata, qinfo.udata, 4))
2336                         rc = -EFAULT;
2337         } else {
2338                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
2339                         rc = -EFAULT;
2340         }
2341         kfree(qinfo.udata);
2342         return rc;
2343 }
2344
2345 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2346                                 struct qeth_arp_cache_entry *entry)
2347 {
2348         struct qeth_cmd_buffer *iob;
2349         char buf[16];
2350         int tmp;
2351         int rc;
2352
2353         QETH_DBF_TEXT(TRACE, 3, "arpadent");
2354
2355         /*
2356          * currently GuestLAN only supports the ARP assist function
2357          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2358          * thus we say EOPNOTSUPP for this ARP function
2359          */
2360         if (card->info.guestlan)
2361                 return -EOPNOTSUPP;
2362         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2363                 return -EOPNOTSUPP;
2364         }
2365
2366         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2367                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2368                                        sizeof(struct qeth_arp_cache_entry),
2369                                        QETH_PROT_IPV4);
2370         rc = qeth_l3_send_setassparms(card, iob,
2371                                    sizeof(struct qeth_arp_cache_entry),
2372                                    (unsigned long) entry,
2373                                    qeth_l3_default_setassparms_cb, NULL);
2374         if (rc) {
2375                 tmp = rc;
2376                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2377                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2378                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2379                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2380         }
2381         return rc;
2382 }
2383
2384 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2385                                 struct qeth_arp_cache_entry *entry)
2386 {
2387         struct qeth_cmd_buffer *iob;
2388         char buf[16] = {0, };
2389         int tmp;
2390         int rc;
2391
2392         QETH_DBF_TEXT(TRACE, 3, "arprment");
2393
2394         /*
2395          * currently GuestLAN only supports the ARP assist function
2396          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2397          * thus we say EOPNOTSUPP for this ARP function
2398          */
2399         if (card->info.guestlan)
2400                 return -EOPNOTSUPP;
2401         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2402                 return -EOPNOTSUPP;
2403         }
2404         memcpy(buf, entry, 12);
2405         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2406                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2407                                        12,
2408                                        QETH_PROT_IPV4);
2409         rc = qeth_l3_send_setassparms(card, iob,
2410                                    12, (unsigned long)buf,
2411                                    qeth_l3_default_setassparms_cb, NULL);
2412         if (rc) {
2413                 tmp = rc;
2414                 memset(buf, 0, 16);
2415                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2416                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2417                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2418                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2419         }
2420         return rc;
2421 }
2422
2423 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2424 {
2425         int rc;
2426         int tmp;
2427
2428         QETH_DBF_TEXT(TRACE, 3, "arpflush");
2429
2430         /*
2431          * currently GuestLAN only supports the ARP assist function
2432          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2433          * thus we say EOPNOTSUPP for this ARP function
2434         */
2435         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2436                 return -EOPNOTSUPP;
2437         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2438                 return -EOPNOTSUPP;
2439         }
2440         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2441                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2442         if (rc) {
2443                 tmp = rc;
2444                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2445                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2446                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2447         }
2448         return rc;
2449 }
2450
2451 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2452 {
2453         struct qeth_card *card = dev->ml_priv;
2454         struct qeth_arp_cache_entry arp_entry;
2455         struct mii_ioctl_data *mii_data;
2456         int rc = 0;
2457
2458         if (!card)
2459                 return -ENODEV;
2460
2461         if ((card->state != CARD_STATE_UP) &&
2462                 (card->state != CARD_STATE_SOFTSETUP))
2463                 return -ENODEV;
2464
2465         switch (cmd) {
2466         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2467                 if (!capable(CAP_NET_ADMIN)) {
2468                         rc = -EPERM;
2469                         break;
2470                 }
2471                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2472                 break;
2473         case SIOC_QETH_ARP_QUERY_INFO:
2474                 if (!capable(CAP_NET_ADMIN)) {
2475                         rc = -EPERM;
2476                         break;
2477                 }
2478                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2479                 break;
2480         case SIOC_QETH_ARP_ADD_ENTRY:
2481                 if (!capable(CAP_NET_ADMIN)) {
2482                         rc = -EPERM;
2483                         break;
2484                 }
2485                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2486                                    sizeof(struct qeth_arp_cache_entry)))
2487                         rc = -EFAULT;
2488                 else
2489                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2490                 break;
2491         case SIOC_QETH_ARP_REMOVE_ENTRY:
2492                 if (!capable(CAP_NET_ADMIN)) {
2493                         rc = -EPERM;
2494                         break;
2495                 }
2496                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2497                                    sizeof(struct qeth_arp_cache_entry)))
2498                         rc = -EFAULT;
2499                 else
2500                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2501                 break;
2502         case SIOC_QETH_ARP_FLUSH_CACHE:
2503                 if (!capable(CAP_NET_ADMIN)) {
2504                         rc = -EPERM;
2505                         break;
2506                 }
2507                 rc = qeth_l3_arp_flush_cache(card);
2508                 break;
2509         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2510                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2511                 break;
2512         case SIOC_QETH_GET_CARD_TYPE:
2513                 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
2514                     !card->info.guestlan)
2515                         return 1;
2516                 return 0;
2517                 break;
2518         case SIOCGMIIPHY:
2519                 mii_data = if_mii(rq);
2520                 mii_data->phy_id = 0;
2521                 break;
2522         case SIOCGMIIREG:
2523                 mii_data = if_mii(rq);
2524                 if (mii_data->phy_id != 0)
2525                         rc = -EINVAL;
2526                 else
2527                         mii_data->val_out = qeth_mdio_read(dev,
2528                                                         mii_data->phy_id,
2529                                                         mii_data->reg_num);
2530                 break;
2531         default:
2532                 rc = -EOPNOTSUPP;
2533         }
2534         if (rc)
2535                 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
2536         return rc;
2537 }
2538
2539 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2540                 struct sk_buff *skb, int ipv, int cast_type)
2541 {
2542         memset(hdr, 0, sizeof(struct qeth_hdr));
2543         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2544         hdr->hdr.l3.ext_flags = 0;
2545
2546         /*
2547          * before we're going to overwrite this location with next hop ip.
2548          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2549          */
2550         if (card->vlangrp && vlan_tx_tag_present(skb)) {
2551                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2552                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2553                 else
2554                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2555                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2556         }
2557
2558         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2559         if (ipv == 4) {
2560                 /* IPv4 */
2561                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2562                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2563                 if ((skb->dst) && (skb->dst->neighbour)) {
2564                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2565                             *((u32 *) skb->dst->neighbour->primary_key);
2566                 } else {
2567                         /* fill in destination address used in ip header */
2568                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2569                                                         ip_hdr(skb)->daddr;
2570                 }
2571         } else if (ipv == 6) {
2572                 /* IPv6 */
2573                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2574                 if (card->info.type == QETH_CARD_TYPE_IQD)
2575                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2576                 if ((skb->dst) && (skb->dst->neighbour)) {
2577                         memcpy(hdr->hdr.l3.dest_addr,
2578                                skb->dst->neighbour->primary_key, 16);
2579                 } else {
2580                         /* fill in destination address used in ip header */
2581                         memcpy(hdr->hdr.l3.dest_addr,
2582                                &ipv6_hdr(skb)->daddr, 16);
2583                 }
2584         } else {
2585                 /* passthrough */
2586                 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2587                         !memcmp(skb->data + sizeof(struct qeth_hdr) +
2588                         sizeof(__u16), skb->dev->broadcast, 6)) {
2589                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2590                                                 QETH_HDR_PASSTHRU;
2591                 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2592                             skb->dev->broadcast, 6)) {
2593                         /* broadcast? */
2594                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2595                                                 QETH_HDR_PASSTHRU;
2596                 } else {
2597                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2598                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2599                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2600                 }
2601         }
2602 }
2603
2604 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2605 {
2606         int rc;
2607         u16 *tag;
2608         struct qeth_hdr *hdr = NULL;
2609         int elements_needed = 0;
2610         struct qeth_card *card = dev->ml_priv;
2611         struct sk_buff *new_skb = NULL;
2612         int ipv = qeth_get_ip_version(skb);
2613         int cast_type = qeth_get_cast_type(card, skb);
2614         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2615                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2616         int tx_bytes = skb->len;
2617         enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
2618         struct qeth_eddp_context *ctx = NULL;
2619         int data_offset = -1;
2620
2621         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2622             (skb->protocol != htons(ETH_P_IPV6)) &&
2623             (skb->protocol != htons(ETH_P_IP)))
2624                         goto tx_drop;
2625
2626         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2627                 card->stats.tx_carrier_errors++;
2628                 goto tx_drop;
2629         }
2630
2631         if ((cast_type == RTN_BROADCAST) &&
2632             (card->info.broadcast_capable == 0))
2633                 goto tx_drop;
2634
2635         if (card->options.performance_stats) {
2636                 card->perf_stats.outbound_cnt++;
2637                 card->perf_stats.outbound_start_time = qeth_get_micros();
2638         }
2639
2640         if (skb_is_gso(skb))
2641                 large_send = card->options.large_send;
2642
2643         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2644             (skb_shinfo(skb)->nr_frags == 0)) {
2645                 new_skb = skb;
2646                 data_offset = ETH_HLEN;
2647                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2648                 if (!hdr)
2649                         goto tx_drop;
2650                 elements_needed++;
2651         } else {
2652                 /* create a clone with writeable headroom */
2653                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2654                                         + VLAN_HLEN);
2655                 if (!new_skb)
2656                         goto tx_drop;
2657         }
2658
2659         if (card->info.type == QETH_CARD_TYPE_IQD) {
2660                 if (data_offset < 0)
2661                         skb_pull(new_skb, ETH_HLEN);
2662         } else {
2663                 if (new_skb->protocol == htons(ETH_P_IP)) {
2664                         if (card->dev->type == ARPHRD_IEEE802_TR)
2665                                 skb_pull(new_skb, TR_HLEN);
2666                         else
2667                                 skb_pull(new_skb, ETH_HLEN);
2668                 }
2669
2670                 if (new_skb->protocol == ETH_P_IPV6 && card->vlangrp &&
2671                                 vlan_tx_tag_present(new_skb)) {
2672                         skb_push(new_skb, VLAN_HLEN);
2673                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2674                         skb_copy_to_linear_data_offset(new_skb, 4,
2675                                 new_skb->data + 8, 4);
2676                         skb_copy_to_linear_data_offset(new_skb, 8,
2677                                 new_skb->data + 12, 4);
2678                         tag = (u16 *)(new_skb->data + 12);
2679                         *tag = __constant_htons(ETH_P_8021Q);
2680                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2681                         new_skb->vlan_tci = 0;
2682                 }
2683         }
2684
2685         netif_stop_queue(dev);
2686
2687         /* fix hardware limitation: as long as we do not have sbal
2688          * chaining we can not send long frag lists so we temporary
2689          * switch to EDDP
2690          */
2691         if ((large_send == QETH_LARGE_SEND_TSO) &&
2692                 ((skb_shinfo(new_skb)->nr_frags + 2) > 16))
2693                 large_send = QETH_LARGE_SEND_EDDP;
2694
2695         if ((large_send == QETH_LARGE_SEND_TSO) &&
2696             (cast_type == RTN_UNSPEC)) {
2697                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2698                                                 sizeof(struct qeth_hdr_tso));
2699                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2700                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2701                 qeth_tso_fill_header(card, hdr, new_skb);
2702                 elements_needed++;
2703         } else {
2704                 if (data_offset < 0) {
2705                         hdr = (struct qeth_hdr *)skb_push(new_skb,
2706                                                 sizeof(struct qeth_hdr));
2707                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2708                                                 cast_type);
2709                 } else {
2710                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2711                                                 cast_type);
2712                         hdr->hdr.l3.length = new_skb->len - data_offset;
2713                 }
2714         }
2715
2716         if (large_send == QETH_LARGE_SEND_EDDP) {
2717                 /* new_skb is not owned by a socket so we use skb to get
2718                  * the protocol
2719                  */
2720                 ctx = qeth_eddp_create_context(card, new_skb, hdr,
2721                                                 skb->sk->sk_protocol);
2722                 if (ctx == NULL) {
2723                         QETH_DBF_MESSAGE(2, "could not create eddp context\n");
2724                         goto tx_drop;
2725                 }
2726         } else {
2727                 int elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
2728                                                  elements_needed);
2729                 if (!elems) {
2730                         if (data_offset >= 0)
2731                                 kmem_cache_free(qeth_core_header_cache, hdr);
2732                         goto tx_drop;
2733                 }
2734                 elements_needed += elems;
2735         }
2736
2737         if ((large_send == QETH_LARGE_SEND_NO) &&
2738             (new_skb->ip_summed == CHECKSUM_PARTIAL))
2739                 qeth_tx_csum(new_skb);
2740
2741         if (card->info.type != QETH_CARD_TYPE_IQD)
2742                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
2743                                          elements_needed, ctx);
2744         else
2745                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2746                                         elements_needed, ctx, data_offset, 0);
2747
2748         if (!rc) {
2749                 card->stats.tx_packets++;
2750                 card->stats.tx_bytes += tx_bytes;
2751                 if (new_skb != skb)
2752                         dev_kfree_skb_any(skb);
2753                 if (card->options.performance_stats) {
2754                         if (large_send != QETH_LARGE_SEND_NO) {
2755                                 card->perf_stats.large_send_bytes += tx_bytes;
2756                                 card->perf_stats.large_send_cnt++;
2757                         }
2758                         if (skb_shinfo(new_skb)->nr_frags > 0) {
2759                                 card->perf_stats.sg_skbs_sent++;
2760                                 /* nr_frags + skb->data */
2761                                 card->perf_stats.sg_frags_sent +=
2762                                         skb_shinfo(new_skb)->nr_frags + 1;
2763                         }
2764                 }
2765
2766                 if (ctx != NULL) {
2767                         qeth_eddp_put_context(ctx);
2768                         dev_kfree_skb_any(new_skb);
2769                 }
2770         } else {
2771                 if (ctx != NULL)
2772                         qeth_eddp_put_context(ctx);
2773
2774                 if (data_offset >= 0)
2775                         kmem_cache_free(qeth_core_header_cache, hdr);
2776
2777                 if (rc == -EBUSY) {
2778                         if (new_skb != skb)
2779                                 dev_kfree_skb_any(new_skb);
2780                         return NETDEV_TX_BUSY;
2781                 } else
2782                         goto tx_drop;
2783         }
2784
2785         netif_wake_queue(dev);
2786         if (card->options.performance_stats)
2787                 card->perf_stats.outbound_time += qeth_get_micros() -
2788                         card->perf_stats.outbound_start_time;
2789         return rc;
2790
2791 tx_drop:
2792         card->stats.tx_dropped++;
2793         card->stats.tx_errors++;
2794         if ((new_skb != skb) && new_skb)
2795                 dev_kfree_skb_any(new_skb);
2796         dev_kfree_skb_any(skb);
2797         netif_wake_queue(dev);
2798         return NETDEV_TX_OK;
2799 }
2800
2801 static int qeth_l3_open(struct net_device *dev)
2802 {
2803         struct qeth_card *card = dev->ml_priv;
2804
2805         QETH_DBF_TEXT(TRACE, 4, "qethopen");
2806         if (card->state != CARD_STATE_SOFTSETUP)
2807                 return -ENODEV;
2808         card->data.state = CH_STATE_UP;
2809         card->state = CARD_STATE_UP;
2810         netif_start_queue(dev);
2811
2812         if (!card->lan_online && netif_carrier_ok(dev))
2813                 netif_carrier_off(dev);
2814         return 0;
2815 }
2816
2817 static int qeth_l3_stop(struct net_device *dev)
2818 {
2819         struct qeth_card *card = dev->ml_priv;
2820
2821         QETH_DBF_TEXT(TRACE, 4, "qethstop");
2822         netif_tx_disable(dev);
2823         if (card->state == CARD_STATE_UP)
2824                 card->state = CARD_STATE_SOFTSETUP;
2825         return 0;
2826 }
2827
2828 static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev)
2829 {
2830         struct qeth_card *card = dev->ml_priv;
2831
2832         return (card->options.checksum_type == HW_CHECKSUMMING);
2833 }
2834
2835 static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data)
2836 {
2837         struct qeth_card *card = dev->ml_priv;
2838         enum qeth_card_states old_state;
2839         enum qeth_checksum_types csum_type;
2840
2841         if ((card->state != CARD_STATE_UP) &&
2842             (card->state != CARD_STATE_DOWN))
2843                 return -EPERM;
2844
2845         if (data)
2846                 csum_type = HW_CHECKSUMMING;
2847         else
2848                 csum_type = SW_CHECKSUMMING;
2849
2850         if (card->options.checksum_type != csum_type) {
2851                 old_state = card->state;
2852                 if (card->state == CARD_STATE_UP)
2853                         __qeth_l3_set_offline(card->gdev, 1);
2854                 card->options.checksum_type = csum_type;
2855                 if (old_state == CARD_STATE_UP)
2856                         __qeth_l3_set_online(card->gdev, 1);
2857         }
2858         return 0;
2859 }
2860
2861 static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data)
2862 {
2863         struct qeth_card *card = dev->ml_priv;
2864
2865         if (data) {
2866                 if (card->options.large_send == QETH_LARGE_SEND_NO) {
2867                         if (card->info.type == QETH_CARD_TYPE_IQD)
2868                                 card->options.large_send = QETH_LARGE_SEND_EDDP;
2869                         else
2870                                 card->options.large_send = QETH_LARGE_SEND_TSO;
2871                         dev->features |= NETIF_F_TSO;
2872                 }
2873         } else {
2874                 dev->features &= ~NETIF_F_TSO;
2875                 card->options.large_send = QETH_LARGE_SEND_NO;
2876         }
2877         return 0;
2878 }
2879
2880 static struct ethtool_ops qeth_l3_ethtool_ops = {
2881         .get_link = ethtool_op_get_link,
2882         .get_tx_csum = ethtool_op_get_tx_csum,
2883         .set_tx_csum = ethtool_op_set_tx_hw_csum,
2884         .get_rx_csum = qeth_l3_ethtool_get_rx_csum,
2885         .set_rx_csum = qeth_l3_ethtool_set_rx_csum,
2886         .get_sg      = ethtool_op_get_sg,
2887         .set_sg      = ethtool_op_set_sg,
2888         .get_tso     = ethtool_op_get_tso,
2889         .set_tso     = qeth_l3_ethtool_set_tso,
2890         .get_strings = qeth_core_get_strings,
2891         .get_ethtool_stats = qeth_core_get_ethtool_stats,
2892         .get_stats_count = qeth_core_get_stats_count,
2893         .get_drvinfo = qeth_core_get_drvinfo,
2894         .get_settings = qeth_core_ethtool_get_settings,
2895 };
2896
2897 /*
2898  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2899  * NOARP on the netdevice is no option because it also turns off neighbor
2900  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2901  * arp resolution but we want the hard header (packet socket will work
2902  * e.g. tcpdump)
2903  */
2904 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2905 {
2906         n->nud_state = NUD_NOARP;
2907         memcpy(n->ha, "FAKELL", 6);
2908         n->output = n->ops->connected_output;
2909         return 0;
2910 }
2911
2912 static int
2913 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2914 {
2915         if (np->tbl->family == AF_INET)
2916                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2917
2918         return 0;
2919 }
2920
2921 static int qeth_l3_setup_netdev(struct qeth_card *card)
2922 {
2923         if (card->info.type == QETH_CARD_TYPE_OSAE) {
2924                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2925                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2926 #ifdef CONFIG_TR
2927                         card->dev = alloc_trdev(0);
2928 #endif
2929                         if (!card->dev)
2930                                 return -ENODEV;
2931                 } else {
2932                         card->dev = alloc_etherdev(0);
2933                         if (!card->dev)
2934                                 return -ENODEV;
2935                         card->dev->neigh_setup = qeth_l3_neigh_setup;
2936
2937                         /*IPv6 address autoconfiguration stuff*/
2938                         qeth_l3_get_unique_id(card);
2939                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2940                                 card->dev->dev_id = card->info.unique_id &
2941                                                          0xffff;
2942                 }
2943         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2944                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
2945                 if (!card->dev)
2946                         return -ENODEV;
2947                 card->dev->flags |= IFF_NOARP;
2948                 qeth_l3_iqd_read_initial_mac(card);
2949         } else
2950                 return -ENODEV;
2951
2952         card->dev->hard_start_xmit = qeth_l3_hard_start_xmit;
2953         card->dev->ml_priv = card;
2954         card->dev->tx_timeout = &qeth_tx_timeout;
2955         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
2956         card->dev->open = qeth_l3_open;
2957         card->dev->stop = qeth_l3_stop;
2958         card->dev->do_ioctl = qeth_l3_do_ioctl;
2959         card->dev->get_stats = qeth_get_stats;
2960         card->dev->change_mtu = qeth_change_mtu;
2961         card->dev->set_multicast_list = qeth_l3_set_multicast_list;
2962         card->dev->vlan_rx_register = qeth_l3_vlan_rx_register;
2963         card->dev->vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid;
2964         card->dev->vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid;
2965         card->dev->mtu = card->info.initial_mtu;
2966         card->dev->set_mac_address = NULL;
2967         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
2968         card->dev->features |=  NETIF_F_HW_VLAN_TX |
2969                                 NETIF_F_HW_VLAN_RX |
2970                                 NETIF_F_HW_VLAN_FILTER;
2971
2972         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
2973         return register_netdev(card->dev);
2974 }
2975
2976 static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
2977                 unsigned int qdio_err, unsigned int queue, int first_element,
2978                 int count, unsigned long card_ptr)
2979 {
2980         struct net_device *net_dev;
2981         struct qeth_card *card;
2982         struct qeth_qdio_buffer *buffer;
2983         int index;
2984         int i;
2985
2986         card = (struct qeth_card *) card_ptr;
2987         net_dev = card->dev;
2988         if (card->options.performance_stats) {
2989                 card->perf_stats.inbound_cnt++;
2990                 card->perf_stats.inbound_start_time = qeth_get_micros();
2991         }
2992         if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
2993                 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
2994                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
2995                 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X",
2996                                 first_element, count);
2997                 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
2998                 qeth_schedule_recovery(card);
2999                 return;
3000         }
3001         for (i = first_element; i < (first_element + count); ++i) {
3002                 index = i % QDIO_MAX_BUFFERS_PER_Q;
3003                 buffer = &card->qdio.in_q->bufs[index];
3004                 if (!(qdio_err &&
3005                       qeth_check_qdio_errors(buffer->buffer,
3006                                              qdio_err, "qinerr")))
3007                         qeth_l3_process_inbound_buffer(card, buffer, index);
3008                 /* clear buffer and give back to hardware */
3009                 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
3010                 qeth_queue_input_buffer(card, index);
3011         }
3012         if (card->options.performance_stats)
3013                 card->perf_stats.inbound_time += qeth_get_micros() -
3014                         card->perf_stats.inbound_start_time;
3015 }
3016
3017 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3018 {
3019         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3020
3021         qeth_l3_create_device_attributes(&gdev->dev);
3022         card->options.layer2 = 0;
3023         card->discipline.input_handler = (qdio_handler_t *)
3024                 qeth_l3_qdio_input_handler;
3025         card->discipline.output_handler = (qdio_handler_t *)
3026                 qeth_qdio_output_handler;
3027         card->discipline.recover = qeth_l3_recover;
3028         return 0;
3029 }
3030
3031 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3032 {
3033         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3034
3035         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3036
3037         if (cgdev->state == CCWGROUP_ONLINE) {
3038                 card->use_hard_stop = 1;
3039                 qeth_l3_set_offline(cgdev);
3040         }
3041
3042         if (card->dev) {
3043                 unregister_netdev(card->dev);
3044                 card->dev = NULL;
3045         }
3046
3047         qeth_l3_remove_device_attributes(&cgdev->dev);
3048         qeth_l3_clear_ip_list(card, 0, 0);
3049         qeth_l3_clear_ipato_list(card);
3050         return;
3051 }
3052
3053 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3054 {
3055         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3056         int rc = 0;
3057         enum qeth_card_states recover_flag;
3058
3059         BUG_ON(!card);
3060         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3061         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3062
3063         qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
3064
3065         recover_flag = card->state;
3066         rc = ccw_device_set_online(CARD_RDEV(card));
3067         if (rc) {
3068                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3069                 return -EIO;
3070         }
3071         rc = ccw_device_set_online(CARD_WDEV(card));
3072         if (rc) {
3073                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3074                 return -EIO;
3075         }
3076         rc = ccw_device_set_online(CARD_DDEV(card));
3077         if (rc) {
3078                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3079                 return -EIO;
3080         }
3081
3082         rc = qeth_core_hardsetup_card(card);
3083         if (rc) {
3084                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3085                 goto out_remove;
3086         }
3087
3088         qeth_l3_query_ipassists(card, QETH_PROT_IPV4);
3089
3090         if (!card->dev && qeth_l3_setup_netdev(card))
3091                 goto out_remove;
3092
3093         card->state = CARD_STATE_HARDSETUP;
3094         qeth_print_status_message(card);
3095
3096         /* softsetup */
3097         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3098
3099         rc = qeth_send_startlan(card);
3100         if (rc) {
3101                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3102                 if (rc == 0xe080) {
3103                         dev_warn(&card->gdev->dev,
3104                                 "The LAN is offline\n");
3105                         card->lan_online = 0;
3106                 }
3107                 return rc;
3108         } else
3109                 card->lan_online = 1;
3110         qeth_set_large_send(card, card->options.large_send);
3111
3112         rc = qeth_l3_setadapter_parms(card);
3113         if (rc)
3114                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3115         rc = qeth_l3_start_ipassists(card);
3116         if (rc)
3117                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3118         rc = qeth_l3_setrouting_v4(card);
3119         if (rc)
3120                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3121         rc = qeth_l3_setrouting_v6(card);
3122         if (rc)
3123                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3124         netif_tx_disable(card->dev);
3125
3126         rc = qeth_init_qdio_queues(card);
3127         if (rc) {
3128                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3129                 goto out_remove;
3130         }
3131         card->state = CARD_STATE_SOFTSETUP;
3132         netif_carrier_on(card->dev);
3133
3134         qeth_set_allowed_threads(card, 0xffffffff, 0);
3135         if (recover_flag == CARD_STATE_RECOVER) {
3136                 if (recovery_mode)
3137                         qeth_l3_open(card->dev);
3138                 else {
3139                         rtnl_lock();
3140                         dev_open(card->dev);
3141                         rtnl_unlock();
3142                 }
3143                 qeth_l3_set_multicast_list(card->dev);
3144         }
3145         /* let user_space know that device is online */
3146         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3147         return 0;
3148 out_remove:
3149         card->use_hard_stop = 1;
3150         qeth_l3_stop_card(card, 0);
3151         ccw_device_set_offline(CARD_DDEV(card));
3152         ccw_device_set_offline(CARD_WDEV(card));
3153         ccw_device_set_offline(CARD_RDEV(card));
3154         if (recover_flag == CARD_STATE_RECOVER)
3155                 card->state = CARD_STATE_RECOVER;
3156         else
3157                 card->state = CARD_STATE_DOWN;
3158         return -ENODEV;
3159 }
3160
3161 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3162 {
3163         return __qeth_l3_set_online(gdev, 0);
3164 }
3165
3166 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3167                         int recovery_mode)
3168 {
3169         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3170         int rc = 0, rc2 = 0, rc3 = 0;
3171         enum qeth_card_states recover_flag;
3172
3173         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3174         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3175
3176         if (card->dev && netif_carrier_ok(card->dev))
3177                 netif_carrier_off(card->dev);
3178         recover_flag = card->state;
3179         qeth_l3_stop_card(card, recovery_mode);
3180         rc  = ccw_device_set_offline(CARD_DDEV(card));
3181         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3182         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3183         if (!rc)
3184                 rc = (rc2) ? rc2 : rc3;
3185         if (rc)
3186                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3187         if (recover_flag == CARD_STATE_UP)
3188                 card->state = CARD_STATE_RECOVER;
3189         /* let user_space know that device is offline */
3190         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3191         return 0;
3192 }
3193
3194 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3195 {
3196         return __qeth_l3_set_offline(cgdev, 0);
3197 }
3198
3199 static int qeth_l3_recover(void *ptr)
3200 {
3201         struct qeth_card *card;
3202         int rc = 0;
3203
3204         card = (struct qeth_card *) ptr;
3205         QETH_DBF_TEXT(TRACE, 2, "recover1");
3206         QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
3207         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3208                 return 0;
3209         QETH_DBF_TEXT(TRACE, 2, "recover2");
3210         dev_warn(&card->gdev->dev,
3211                 "A recovery process has been started for the device\n");
3212         card->use_hard_stop = 1;
3213         __qeth_l3_set_offline(card->gdev, 1);
3214         rc = __qeth_l3_set_online(card->gdev, 1);
3215         /* don't run another scheduled recovery */
3216         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3217         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3218         if (!rc)
3219                 dev_info(&card->gdev->dev,
3220                         "Device successfully recovered!\n");
3221         else {
3222                 rtnl_lock();
3223                 dev_close(card->dev);
3224                 rtnl_unlock();
3225                 dev_warn(&card->gdev->dev, "The qeth device driver "
3226                         "failed to recover an error on the device\n");
3227         }
3228         return 0;
3229 }
3230
3231 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3232 {
3233         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3234         qeth_l3_clear_ip_list(card, 0, 0);
3235         qeth_qdio_clear_card(card, 0);
3236         qeth_clear_qdio_buffers(card);
3237 }
3238
3239 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3240         .probe = qeth_l3_probe_device,
3241         .remove = qeth_l3_remove_device,
3242         .set_online = qeth_l3_set_online,
3243         .set_offline = qeth_l3_set_offline,
3244         .shutdown = qeth_l3_shutdown,
3245 };
3246 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3247
3248 static int qeth_l3_ip_event(struct notifier_block *this,
3249                             unsigned long event, void *ptr)
3250 {
3251         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3252         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3253         struct qeth_ipaddr *addr;
3254         struct qeth_card *card;
3255
3256         if (dev_net(dev) != &init_net)
3257                 return NOTIFY_DONE;
3258
3259         QETH_DBF_TEXT(TRACE, 3, "ipevent");
3260         card = qeth_l3_get_card_from_dev(dev);
3261         if (!card)
3262                 return NOTIFY_DONE;
3263
3264         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3265         if (addr != NULL) {
3266                 addr->u.a4.addr = ifa->ifa_address;
3267                 addr->u.a4.mask = ifa->ifa_mask;
3268                 addr->type = QETH_IP_TYPE_NORMAL;
3269         } else
3270                 goto out;
3271
3272         switch (event) {
3273         case NETDEV_UP:
3274                 if (!qeth_l3_add_ip(card, addr))
3275                         kfree(addr);
3276                 break;
3277         case NETDEV_DOWN:
3278                 if (!qeth_l3_delete_ip(card, addr))
3279                         kfree(addr);
3280                 break;
3281         default:
3282                 break;
3283         }
3284         qeth_l3_set_ip_addr_list(card);
3285 out:
3286         return NOTIFY_DONE;
3287 }
3288
3289 static struct notifier_block qeth_l3_ip_notifier = {
3290         qeth_l3_ip_event,
3291         NULL,
3292 };
3293
3294 #ifdef CONFIG_QETH_IPV6
3295 /**
3296  * IPv6 event handler
3297  */
3298 static int qeth_l3_ip6_event(struct notifier_block *this,
3299                              unsigned long event, void *ptr)
3300 {
3301         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3302         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3303         struct qeth_ipaddr *addr;
3304         struct qeth_card *card;
3305
3306         QETH_DBF_TEXT(TRACE, 3, "ip6event");
3307
3308         card = qeth_l3_get_card_from_dev(dev);
3309         if (!card)
3310                 return NOTIFY_DONE;
3311         if (!qeth_is_supported(card, IPA_IPV6))
3312                 return NOTIFY_DONE;
3313
3314         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3315         if (addr != NULL) {
3316                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3317                 addr->u.a6.pfxlen = ifa->prefix_len;
3318                 addr->type = QETH_IP_TYPE_NORMAL;
3319         } else
3320                 goto out;
3321
3322         switch (event) {
3323         case NETDEV_UP:
3324                 if (!qeth_l3_add_ip(card, addr))
3325                         kfree(addr);
3326                 break;
3327         case NETDEV_DOWN:
3328                 if (!qeth_l3_delete_ip(card, addr))
3329                         kfree(addr);
3330                 break;
3331         default:
3332                 break;
3333         }
3334         qeth_l3_set_ip_addr_list(card);
3335 out:
3336         return NOTIFY_DONE;
3337 }
3338
3339 static struct notifier_block qeth_l3_ip6_notifier = {
3340         qeth_l3_ip6_event,
3341         NULL,
3342 };
3343 #endif
3344
3345 static int qeth_l3_register_notifiers(void)
3346 {
3347         int rc;
3348
3349         QETH_DBF_TEXT(TRACE, 5, "regnotif");
3350         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3351         if (rc)
3352                 return rc;
3353 #ifdef CONFIG_QETH_IPV6
3354         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3355         if (rc) {
3356                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3357                 return rc;
3358         }
3359 #else
3360         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3361 #endif
3362         return 0;
3363 }
3364
3365 static void qeth_l3_unregister_notifiers(void)
3366 {
3367
3368         QETH_DBF_TEXT(TRACE, 5, "unregnot");
3369         BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3370 #ifdef CONFIG_QETH_IPV6
3371         BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3372 #endif /* QETH_IPV6 */
3373 }
3374
3375 static int __init qeth_l3_init(void)
3376 {
3377         int rc = 0;
3378
3379         pr_info("register layer 3 discipline\n");
3380         rc = qeth_l3_register_notifiers();
3381         return rc;
3382 }
3383
3384 static void __exit qeth_l3_exit(void)
3385 {
3386         qeth_l3_unregister_notifiers();
3387         pr_info("unregister layer 3 discipline\n");
3388 }
3389
3390 module_init(qeth_l3_init);
3391 module_exit(qeth_l3_exit);
3392 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3393 MODULE_DESCRIPTION("qeth layer 3 discipline");
3394 MODULE_LICENSE("GPL");