drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/bitops.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/mii.h>
  20 #include <linux/ip.h>
  21 #include <linux/ipv6.h>
  22 #include <linux/inetdevice.h>
  23 #include <linux/igmp.h>
  24 #include <linux/slab.h>
  25 #include <linux/if_vlan.h>
  26
  27 #include <net/ip.h>
  28 #include <net/arp.h>
  29 #include <net/route.h>
  30 #include <net/ip6_fib.h>
  31 #include <net/ip6_checksum.h>
  32 #include <net/iucv/af_iucv.h>
  33
  34 #include "qeth_l3.h"
  35
  36
  37 static int qeth_l3_set_offline(struct ccwgroup_device *);
  38 static int qeth_l3_recover(void *);
  39 static int qeth_l3_stop(struct net_device *);
  40 static void qeth_l3_set_multicast_list(struct net_device *);
  41 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  42 static int qeth_l3_register_addr_entry(struct qeth_card *,
  43                 struct qeth_ipaddr *);
  44 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  45                 struct qeth_ipaddr *);
  46 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  47 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  48
  49 static int qeth_l3_isxdigit(char *buf)
  50 {
  51         while (*buf) {
  52                 if (!isxdigit(*buf++))
  53                         return 0;
  54         }
  55         return 1;
  56 }
  57
  58 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  59 {
  60         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
  61 }
  62
  63 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  64 {
  65         int count = 0, rc = 0;
  66         unsigned int in[4];
  67         char c;
  68
  69         rc = sscanf(buf, "%u.%u.%u.%u%c",
  70                     &in[0], &in[1], &in[2], &in[3], &c);
  71         if (rc != 4 && (rc != 5 || c != '\n'))
  72                 return -EINVAL;
  73         for (count = 0; count < 4; count++) {
  74                 if (in[count] > 255)
  75                         return -EINVAL;
  76                 addr[count] = in[count];
  77         }
  78         return 0;
  79 }
  80
  81 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  82 {
  83         sprintf(buf, "%pI6", addr);
  84 }
  85
  86 static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  87 {
  88         const char *end, *end_tmp, *start;
  89         __u16 *in;
  90         char num[5];
  91         int num2, cnt, out, found, save_cnt;
  92         unsigned short in_tmp[8] = {0, };
  93
  94         cnt = out = found = save_cnt = num2 = 0;
  95         end = start = buf;
  96         in = (__u16 *) addr;
  97         memset(in, 0, 16);
  98         while (*end) {
  99                 end = strchr(start, ':');
 100                 if (end == NULL) {
 101                         end = buf + strlen(buf);
 102                         end_tmp = strchr(start, '\n');
 103                         if (end_tmp != NULL)
 104                                 end = end_tmp;
 105                         out = 1;
 106                 }
 107                 if ((end - start)) {
 108                         memset(num, 0, 5);
 109                         if ((end - start) > 4)
 110                                 return -EINVAL;
 111                         memcpy(num, start, end - start);
 112                         if (!qeth_l3_isxdigit(num))
 113                                 return -EINVAL;
 114                         sscanf(start, "%x", &num2);
 115                         if (found)
 116                                 in_tmp[save_cnt++] = num2;
 117                         else
 118                                 in[cnt++] = num2;
 119                         if (out)
 120                                 break;
 121                 } else {
 122                         if (found)
 123                                 return -EINVAL;
 124                         found = 1;
 125                 }
 126                 start = ++end;
 127         }
 128         if (cnt + save_cnt > 8)
 129                 return -EINVAL;
 130         cnt = 7;
 131         while (save_cnt)
 132                 in[cnt--] = in_tmp[--save_cnt];
 133         return 0;
 134 }
 135
 136 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 137                                 char *buf)
 138 {
 139         if (proto == QETH_PROT_IPV4)
 140                 qeth_l3_ipaddr4_to_string(addr, buf);
 141         else if (proto == QETH_PROT_IPV6)
 142                 qeth_l3_ipaddr6_to_string(addr, buf);
 143 }
 144
 145 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 146                                 __u8 *addr)
 147 {
 148         if (proto == QETH_PROT_IPV4)
 149                 return qeth_l3_string_to_ipaddr4(buf, addr);
 150         else if (proto == QETH_PROT_IPV6)
 151                 return qeth_l3_string_to_ipaddr6(buf, addr);
 152         else
 153                 return -EINVAL;
 154 }
 155
 156 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 157 {
 158         int i, j;
 159         u8 octet;
 160
 161         for (i = 0; i < len; ++i) {
 162                 octet = addr[i];
 163                 for (j = 7; j >= 0; --j) {
 164                         bits[i*8 + j] = octet & 1;
 165                         octet >>= 1;
 166                 }
 167         }
 168 }
 169
 170 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 171                                                 struct qeth_ipaddr *addr)
 172 {
 173         struct qeth_ipato_entry *ipatoe;
 174         u8 addr_bits[128] = {0, };
 175         u8 ipatoe_bits[128] = {0, };
 176         int rc = 0;
 177
 178         if (!card->ipato.enabled)
 179                 return 0;
 180
 181         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 182                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 183         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 184                 if (addr->proto != ipatoe->proto)
 185                         continue;
 186                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 187                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 188                                           4 : 16);
 189                 if (addr->proto == QETH_PROT_IPV4)
 190                         rc = !memcmp(addr_bits, ipatoe_bits,
 191                                      min(32, ipatoe->mask_bits));
 192                 else
 193                         rc = !memcmp(addr_bits, ipatoe_bits,
 194                                      min(128, ipatoe->mask_bits));
 195                 if (rc)
 196                         break;
 197         }
 198         /* invert? */
 199         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 200                 rc = !rc;
 201         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 202                 rc = !rc;
 203
 204         return rc;
 205 }
 206
 207 /*
 208  * Add IP to be added to todo list. If there is already an "add todo"
 209  * in this list we just incremenent the reference count.
 210  * Returns 0 if we  just incremented reference count.
 211  */
 212 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
 213                                         struct qeth_ipaddr *addr, int add)
 214 {
 215         struct qeth_ipaddr *tmp, *t;
 216         int found = 0;
 217
 218         if (card->options.sniffer)
 219                 return 0;
 220         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
 221                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
 222                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
 223                         return 0;
 224                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
 225                     (addr->proto       == QETH_PROT_IPV4)     &&
 226                     (tmp->type         == addr->type)         &&
 227                     (tmp->is_multicast == addr->is_multicast) &&
 228                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
 229                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
 230                         found = 1;
 231                         break;
 232                 }
 233                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
 234                     (addr->proto       == QETH_PROT_IPV6)      &&
 235                     (tmp->type         == addr->type)          &&
 236                     (tmp->is_multicast == addr->is_multicast)  &&
 237                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
 238                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 239                             sizeof(struct in6_addr)) == 0)) {
 240                         found = 1;
 241                         break;
 242                 }
 243         }
 244         if (found) {
 245                 if (addr->users != 0)
 246                         tmp->users += addr->users;
 247                 else
 248                         tmp->users += add ? 1 : -1;
 249                 if (tmp->users == 0) {
 250                         list_del(&tmp->entry);
 251                         kfree(tmp);
 252                 }
 253                 return 0;
 254         } else {
 255                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
 256                         list_add(&addr->entry, card->ip_tbd_list);
 257                 else {
 258                         if (addr->users == 0)
 259                                 addr->users += add ? 1 : -1;
 260                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
 261                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 262                                 QETH_CARD_TEXT(card, 2, "tkovaddr");
 263                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 264                         }
 265                         list_add_tail(&addr->entry, card->ip_tbd_list);
 266                 }
 267                 return 1;
 268         }
 269 }
 270
 271 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 272 {
 273         unsigned long flags;
 274         int rc = 0;
 275
 276         QETH_CARD_TEXT(card, 4, "delip");
 277
 278         if (addr->proto == QETH_PROT_IPV4)
 279                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 280         else {
 281                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 282                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 283         }
 284         spin_lock_irqsave(&card->ip_lock, flags);
 285         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
 286         spin_unlock_irqrestore(&card->ip_lock, flags);
 287         return rc;
 288 }
 289
 290 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 291 {
 292         unsigned long flags;
 293         int rc = 0;
 294
 295         QETH_CARD_TEXT(card, 4, "addip");
 296         if (addr->proto == QETH_PROT_IPV4)
 297                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 298         else {
 299                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 300                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 301         }
 302         spin_lock_irqsave(&card->ip_lock, flags);
 303         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
 304         spin_unlock_irqrestore(&card->ip_lock, flags);
 305         return rc;
 306 }
 307
 308
 309 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 310                                 enum qeth_prot_versions prot)
 311 {
 312         struct qeth_ipaddr *addr;
 313
 314         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 315         if (addr == NULL) {
 316                 return NULL;
 317         }
 318         addr->type = QETH_IP_TYPE_NORMAL;
 319         addr->proto = prot;
 320         return addr;
 321 }
 322
 323 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
 324 {
 325         struct qeth_ipaddr *iptodo;
 326         unsigned long flags;
 327
 328         QETH_CARD_TEXT(card, 4, "delmc");
 329         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
 330         if (!iptodo) {
 331                 QETH_CARD_TEXT(card, 2, "dmcnomem");
 332                 return;
 333         }
 334         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
 335         spin_lock_irqsave(&card->ip_lock, flags);
 336         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
 337                 kfree(iptodo);
 338         spin_unlock_irqrestore(&card->ip_lock, flags);
 339 }
 340
 341 /*
 342  * Add/remove address to/from card's ip list, i.e. try to add or remove
 343  * reference to/from an IP address that is already registered on the card.
 344  * Returns:
 345  *      0  address was on card and its reference count has been adjusted,
 346  *         but is still > 0, so nothing has to be done
 347  *         also returns 0 if card was not on card and the todo was to delete
 348  *         the address -> there is also nothing to be done
 349  *      1  address was not on card and the todo is to add it to the card's ip
 350  *         list
 351  *      -1 address was on card and its reference count has been decremented
 352  *         to <= 0 by the todo -> address must be removed from card
 353  */
 354 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
 355                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
 356 {
 357         struct qeth_ipaddr *addr;
 358         int found = 0;
 359
 360         list_for_each_entry(addr, &card->ip_list, entry) {
 361                 if ((addr->proto == QETH_PROT_IPV4) &&
 362                     (todo->proto == QETH_PROT_IPV4) &&
 363                     (addr->type == todo->type) &&
 364                     (addr->u.a4.addr == todo->u.a4.addr) &&
 365                     (addr->u.a4.mask == todo->u.a4.mask)) {
 366                         found = 1;
 367                         break;
 368                 }
 369                 if ((addr->proto == QETH_PROT_IPV6) &&
 370                     (todo->proto == QETH_PROT_IPV6) &&
 371                     (addr->type == todo->type) &&
 372                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
 373                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
 374                             sizeof(struct in6_addr)) == 0)) {
 375                         found = 1;
 376                         break;
 377                 }
 378         }
 379         if (found) {
 380                 addr->users += todo->users;
 381                 if (addr->users <= 0) {
 382                         *__addr = addr;
 383                         return -1;
 384                 } else {
 385                         /* for VIPA and RXIP limit refcount to 1 */
 386                         if (addr->type != QETH_IP_TYPE_NORMAL)
 387                                 addr->users = 1;
 388                         return 0;
 389                 }
 390         }
 391         if (todo->users > 0) {
 392                 /* for VIPA and RXIP limit refcount to 1 */
 393                 if (todo->type != QETH_IP_TYPE_NORMAL)
 394                         todo->users = 1;
 395                 return 1;
 396         } else
 397                 return 0;
 398 }
 399
 400 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
 401                                         unsigned long *flags)
 402 {
 403         struct list_head fail_list;
 404         struct qeth_ipaddr *addr, *tmp;
 405         int rc;
 406
 407         INIT_LIST_HEAD(&fail_list);
 408 again:
 409         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
 410                 if (addr->is_multicast) {
 411                         list_del(&addr->entry);
 412                         spin_unlock_irqrestore(&card->ip_lock, *flags);
 413                         rc = qeth_l3_deregister_addr_entry(card, addr);
 414                         spin_lock_irqsave(&card->ip_lock, *flags);
 415                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
 416                                 kfree(addr);
 417                         else
 418                                 list_add_tail(&addr->entry, &fail_list);
 419                         goto again;
 420                 }
 421         }
 422         list_splice(&fail_list, &card->ip_list);
 423 }
 424
 425 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
 426 {
 427         struct list_head *tbd_list;
 428         struct qeth_ipaddr *todo, *addr;
 429         unsigned long flags;
 430         int rc;
 431
 432         QETH_CARD_TEXT(card, 2, "sdiplist");
 433         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
 434
 435         if (!qeth_card_hw_is_reachable(card) || card->options.sniffer)
 436                 return;
 437
 438         spin_lock_irqsave(&card->ip_lock, flags);
 439         tbd_list = card->ip_tbd_list;
 440         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
 441         if (!card->ip_tbd_list) {
 442                 QETH_CARD_TEXT(card, 0, "silnomem");
 443                 card->ip_tbd_list = tbd_list;
 444                 spin_unlock_irqrestore(&card->ip_lock, flags);
 445                 return;
 446         } else
 447                 INIT_LIST_HEAD(card->ip_tbd_list);
 448
 449         while (!list_empty(tbd_list)) {
 450                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
 451                 list_del(&todo->entry);
 452                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
 453                         __qeth_l3_delete_all_mc(card, &flags);
 454                         kfree(todo);
 455                         continue;
 456                 }
 457                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
 458                 if (rc == 0) {
 459                         /* nothing to be done; only adjusted refcount */
 460                         kfree(todo);
 461                 } else if (rc == 1) {
 462                         /* new entry to be added to on-card list */
 463                         spin_unlock_irqrestore(&card->ip_lock, flags);
 464                         rc = qeth_l3_register_addr_entry(card, todo);
 465                         spin_lock_irqsave(&card->ip_lock, flags);
 466                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
 467                                 list_add_tail(&todo->entry, &card->ip_list);
 468                         else
 469                                 kfree(todo);
 470                 } else if (rc == -1) {
 471                         /* on-card entry to be removed */
 472                         list_del_init(&addr->entry);
 473                         spin_unlock_irqrestore(&card->ip_lock, flags);
 474                         rc = qeth_l3_deregister_addr_entry(card, addr);
 475                         spin_lock_irqsave(&card->ip_lock, flags);
 476                         if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
 477                                 kfree(addr);
 478                         else
 479                                 list_add_tail(&addr->entry, &card->ip_list);
 480                         kfree(todo);
 481                 }
 482         }
 483         spin_unlock_irqrestore(&card->ip_lock, flags);
 484         kfree(tbd_list);
 485 }
 486
 487 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
 488 {
 489         struct qeth_ipaddr *addr, *tmp;
 490         unsigned long flags;
 491
 492         QETH_CARD_TEXT(card, 4, "clearip");
 493         if (recover && card->options.sniffer)
 494                 return;
 495         spin_lock_irqsave(&card->ip_lock, flags);
 496         /* clear todo list */
 497         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
 498                 list_del(&addr->entry);
 499                 kfree(addr);
 500         }
 501
 502         while (!list_empty(&card->ip_list)) {
 503                 addr = list_entry(card->ip_list.next,
 504                                   struct qeth_ipaddr, entry);
 505                 list_del_init(&addr->entry);
 506                 if (!recover || addr->is_multicast) {
 507                         kfree(addr);
 508                         continue;
 509                 }
 510                 list_add_tail(&addr->entry, card->ip_tbd_list);
 511         }
 512         spin_unlock_irqrestore(&card->ip_lock, flags);
 513 }
 514
 515 static int qeth_l3_address_exists_in_list(struct list_head *list,
 516                 struct qeth_ipaddr *addr, int same_type)
 517 {
 518         struct qeth_ipaddr *tmp;
 519
 520         list_for_each_entry(tmp, list, entry) {
 521                 if ((tmp->proto == QETH_PROT_IPV4) &&
 522                     (addr->proto == QETH_PROT_IPV4) &&
 523                     ((same_type && (tmp->type == addr->type)) ||
 524                     (!same_type && (tmp->type != addr->type))) &&
 525                     (tmp->u.a4.addr == addr->u.a4.addr))
 526                         return 1;
 527
 528                 if ((tmp->proto == QETH_PROT_IPV6) &&
 529                     (addr->proto == QETH_PROT_IPV6) &&
 530                     ((same_type && (tmp->type == addr->type)) ||
 531                     (!same_type && (tmp->type != addr->type))) &&
 532                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 533                             sizeof(struct in6_addr)) == 0))
 534                         return 1;
 535
 536         }
 537         return 0;
 538 }
 539
 540 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 541                         struct qeth_ipaddr *addr, int ipacmd)
 542 {
 543         int rc;
 544         struct qeth_cmd_buffer *iob;
 545         struct qeth_ipa_cmd *cmd;
 546
 547         QETH_CARD_TEXT(card, 4, "setdelmc");
 548
 549         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 550         if (!iob)
 551                 return -ENOMEM;
 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_CARD_TEXT(card, 4, "setdelip");
 588         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 589
 590         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 591         if (!iob)
 592                 return -ENOMEM;
 593         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 594         if (addr->proto == QETH_PROT_IPV6) {
 595                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 596                        sizeof(struct in6_addr));
 597                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 598                 memcpy(cmd->data.setdelip6.mask, netmask,
 599                        sizeof(struct in6_addr));
 600                 cmd->data.setdelip6.flags = flags;
 601         } else {
 602                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 603                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 604                 cmd->data.setdelip4.flags = flags;
 605         }
 606
 607         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 608
 609         return rc;
 610 }
 611
 612 static int qeth_l3_send_setrouting(struct qeth_card *card,
 613         enum qeth_routing_types type, enum qeth_prot_versions prot)
 614 {
 615         int rc;
 616         struct qeth_ipa_cmd *cmd;
 617         struct qeth_cmd_buffer *iob;
 618
 619         QETH_CARD_TEXT(card, 4, "setroutg");
 620         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 621         if (!iob)
 622                 return -ENOMEM;
 623         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 624         cmd->data.setrtg.type = (type);
 625         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 626
 627         return rc;
 628 }
 629
 630 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 631                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 632 {
 633         if (card->info.type == QETH_CARD_TYPE_IQD) {
 634                 switch (*type) {
 635                 case NO_ROUTER:
 636                 case PRIMARY_CONNECTOR:
 637                 case SECONDARY_CONNECTOR:
 638                 case MULTICAST_ROUTER:
 639                         return 0;
 640                 default:
 641                         goto out_inval;
 642                 }
 643         } else {
 644                 switch (*type) {
 645                 case NO_ROUTER:
 646                 case PRIMARY_ROUTER:
 647                 case SECONDARY_ROUTER:
 648                         return 0;
 649                 case MULTICAST_ROUTER:
 650                         if (qeth_is_ipafunc_supported(card, prot,
 651                                                       IPA_OSA_MC_ROUTER))
 652                                 return 0;
 653                 default:
 654                         goto out_inval;
 655                 }
 656         }
 657 out_inval:
 658         *type = NO_ROUTER;
 659         return -EINVAL;
 660 }
 661
 662 int qeth_l3_setrouting_v4(struct qeth_card *card)
 663 {
 664         int rc;
 665
 666         QETH_CARD_TEXT(card, 3, "setrtg4");
 667
 668         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 669                                   QETH_PROT_IPV4);
 670         if (rc)
 671                 return rc;
 672
 673         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 674                                   QETH_PROT_IPV4);
 675         if (rc) {
 676                 card->options.route4.type = NO_ROUTER;
 677                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 678                         " on %s. Type set to 'no router'.\n", rc,
 679                         QETH_CARD_IFNAME(card));
 680         }
 681         return rc;
 682 }
 683
 684 int qeth_l3_setrouting_v6(struct qeth_card *card)
 685 {
 686         int rc = 0;
 687
 688         QETH_CARD_TEXT(card, 3, "setrtg6");
 689 #ifdef CONFIG_QETH_IPV6
 690
 691         if (!qeth_is_supported(card, IPA_IPV6))
 692                 return 0;
 693         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 694                                   QETH_PROT_IPV6);
 695         if (rc)
 696                 return rc;
 697
 698         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 699                                   QETH_PROT_IPV6);
 700         if (rc) {
 701                 card->options.route6.type = NO_ROUTER;
 702                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 703                         " on %s. Type set to 'no router'.\n", rc,
 704                         QETH_CARD_IFNAME(card));
 705         }
 706 #endif
 707         return rc;
 708 }
 709
 710 /*
 711  * IP address takeover related functions
 712  */
 713 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 714 {
 715
 716         struct qeth_ipato_entry *ipatoe, *tmp;
 717         unsigned long flags;
 718
 719         spin_lock_irqsave(&card->ip_lock, flags);
 720         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 721                 list_del(&ipatoe->entry);
 722                 kfree(ipatoe);
 723         }
 724         spin_unlock_irqrestore(&card->ip_lock, flags);
 725 }
 726
 727 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 728                                 struct qeth_ipato_entry *new)
 729 {
 730         struct qeth_ipato_entry *ipatoe;
 731         unsigned long flags;
 732         int rc = 0;
 733
 734         QETH_CARD_TEXT(card, 2, "addipato");
 735         spin_lock_irqsave(&card->ip_lock, flags);
 736         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 737                 if (ipatoe->proto != new->proto)
 738                         continue;
 739                 if (!memcmp(ipatoe->addr, new->addr,
 740                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 741                     (ipatoe->mask_bits == new->mask_bits)) {
 742                         rc = -EEXIST;
 743                         break;
 744                 }
 745         }
 746         if (!rc)
 747                 list_add_tail(&new->entry, &card->ipato.entries);
 748
 749         spin_unlock_irqrestore(&card->ip_lock, flags);
 750         return rc;
 751 }
 752
 753 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 754                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 755 {
 756         struct qeth_ipato_entry *ipatoe, *tmp;
 757         unsigned long flags;
 758
 759         QETH_CARD_TEXT(card, 2, "delipato");
 760         spin_lock_irqsave(&card->ip_lock, flags);
 761         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 762                 if (ipatoe->proto != proto)
 763                         continue;
 764                 if (!memcmp(ipatoe->addr, addr,
 765                             (proto == QETH_PROT_IPV4)? 4:16) &&
 766                     (ipatoe->mask_bits == mask_bits)) {
 767                         list_del(&ipatoe->entry);
 768                         kfree(ipatoe);
 769                 }
 770         }
 771         spin_unlock_irqrestore(&card->ip_lock, flags);
 772 }
 773
 774 /*
 775  * VIPA related functions
 776  */
 777 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 778               const u8 *addr)
 779 {
 780         struct qeth_ipaddr *ipaddr;
 781         unsigned long flags;
 782         int rc = 0;
 783
 784         ipaddr = qeth_l3_get_addr_buffer(proto);
 785         if (ipaddr) {
 786                 if (proto == QETH_PROT_IPV4) {
 787                         QETH_CARD_TEXT(card, 2, "addvipa4");
 788                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 789                         ipaddr->u.a4.mask = 0;
 790                 } else if (proto == QETH_PROT_IPV6) {
 791                         QETH_CARD_TEXT(card, 2, "addvipa6");
 792                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 793                         ipaddr->u.a6.pfxlen = 0;
 794                 }
 795                 ipaddr->type = QETH_IP_TYPE_VIPA;
 796                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 797                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 798         } else
 799                 return -ENOMEM;
 800         spin_lock_irqsave(&card->ip_lock, flags);
 801         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 802             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 803                 rc = -EEXIST;
 804         spin_unlock_irqrestore(&card->ip_lock, flags);
 805         if (rc) {
 806                 kfree(ipaddr);
 807                 return rc;
 808         }
 809         if (!qeth_l3_add_ip(card, ipaddr))
 810                 kfree(ipaddr);
 811         qeth_l3_set_ip_addr_list(card);
 812         return rc;
 813 }
 814
 815 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 816               const u8 *addr)
 817 {
 818         struct qeth_ipaddr *ipaddr;
 819
 820         ipaddr = qeth_l3_get_addr_buffer(proto);
 821         if (ipaddr) {
 822                 if (proto == QETH_PROT_IPV4) {
 823                         QETH_CARD_TEXT(card, 2, "delvipa4");
 824                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 825                         ipaddr->u.a4.mask = 0;
 826                 } else if (proto == QETH_PROT_IPV6) {
 827                         QETH_CARD_TEXT(card, 2, "delvipa6");
 828                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 829                         ipaddr->u.a6.pfxlen = 0;
 830                 }
 831                 ipaddr->type = QETH_IP_TYPE_VIPA;
 832         } else
 833                 return;
 834         if (!qeth_l3_delete_ip(card, ipaddr))
 835                 kfree(ipaddr);
 836         qeth_l3_set_ip_addr_list(card);
 837 }
 838
 839 /*
 840  * proxy ARP related functions
 841  */
 842 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 843               const u8 *addr)
 844 {
 845         struct qeth_ipaddr *ipaddr;
 846         unsigned long flags;
 847         int rc = 0;
 848
 849         ipaddr = qeth_l3_get_addr_buffer(proto);
 850         if (ipaddr) {
 851                 if (proto == QETH_PROT_IPV4) {
 852                         QETH_CARD_TEXT(card, 2, "addrxip4");
 853                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 854                         ipaddr->u.a4.mask = 0;
 855                 } else if (proto == QETH_PROT_IPV6) {
 856                         QETH_CARD_TEXT(card, 2, "addrxip6");
 857                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 858                         ipaddr->u.a6.pfxlen = 0;
 859                 }
 860                 ipaddr->type = QETH_IP_TYPE_RXIP;
 861                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 862                 ipaddr->del_flags = 0;
 863         } else
 864                 return -ENOMEM;
 865         spin_lock_irqsave(&card->ip_lock, flags);
 866         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 867             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 868                 rc = -EEXIST;
 869         spin_unlock_irqrestore(&card->ip_lock, flags);
 870         if (rc) {
 871                 kfree(ipaddr);
 872                 return rc;
 873         }
 874         if (!qeth_l3_add_ip(card, ipaddr))
 875                 kfree(ipaddr);
 876         qeth_l3_set_ip_addr_list(card);
 877         return 0;
 878 }
 879
 880 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 881                         const u8 *addr)
 882 {
 883         struct qeth_ipaddr *ipaddr;
 884
 885         ipaddr = qeth_l3_get_addr_buffer(proto);
 886         if (ipaddr) {
 887                 if (proto == QETH_PROT_IPV4) {
 888                         QETH_CARD_TEXT(card, 2, "addrxip4");
 889                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 890                         ipaddr->u.a4.mask = 0;
 891                 } else if (proto == QETH_PROT_IPV6) {
 892                         QETH_CARD_TEXT(card, 2, "addrxip6");
 893                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 894                         ipaddr->u.a6.pfxlen = 0;
 895                 }
 896                 ipaddr->type = QETH_IP_TYPE_RXIP;
 897         } else
 898                 return;
 899         if (!qeth_l3_delete_ip(card, ipaddr))
 900                 kfree(ipaddr);
 901         qeth_l3_set_ip_addr_list(card);
 902 }
 903
 904 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 905                                 struct qeth_ipaddr *addr)
 906 {
 907         char buf[50];
 908         int rc = 0;
 909         int cnt = 3;
 910
 911         if (addr->proto == QETH_PROT_IPV4) {
 912                 QETH_CARD_TEXT(card, 2, "setaddr4");
 913                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 914         } else if (addr->proto == QETH_PROT_IPV6) {
 915                 QETH_CARD_TEXT(card, 2, "setaddr6");
 916                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 917                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 918         } else {
 919                 QETH_CARD_TEXT(card, 2, "setaddr?");
 920                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 921         }
 922         do {
 923                 if (addr->is_multicast)
 924                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 925                 else
 926                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 927                                         addr->set_flags);
 928                 if (rc)
 929                         QETH_CARD_TEXT(card, 2, "failed");
 930         } while ((--cnt > 0) && rc);
 931         if (rc) {
 932                 QETH_CARD_TEXT(card, 2, "FAILED");
 933                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 934                 dev_warn(&card->gdev->dev,
 935                         "Registering IP address %s failed\n", buf);
 936         }
 937         return rc;
 938 }
 939
 940 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 941                                                 struct qeth_ipaddr *addr)
 942 {
 943         int rc = 0;
 944
 945         if (addr->proto == QETH_PROT_IPV4) {
 946                 QETH_CARD_TEXT(card, 2, "deladdr4");
 947                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 948         } else if (addr->proto == QETH_PROT_IPV6) {
 949                 QETH_CARD_TEXT(card, 2, "deladdr6");
 950                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 951                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 952         } else {
 953                 QETH_CARD_TEXT(card, 2, "deladdr?");
 954                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 955         }
 956         if (addr->is_multicast)
 957                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 958         else
 959                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 960                                         addr->del_flags);
 961         if (rc)
 962                 QETH_CARD_TEXT(card, 2, "failed");
 963
 964         return rc;
 965 }
 966
 967 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 968 {
 969         if (cast_type == RTN_MULTICAST)
 970                 return QETH_CAST_MULTICAST;
 971         if (cast_type == RTN_BROADCAST)
 972                 return QETH_CAST_BROADCAST;
 973         return QETH_CAST_UNICAST;
 974 }
 975
 976 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 977 {
 978         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 979         if (cast_type == RTN_MULTICAST)
 980                 return ct | QETH_CAST_MULTICAST;
 981         if (cast_type == RTN_ANYCAST)
 982                 return ct | QETH_CAST_ANYCAST;
 983         if (cast_type == RTN_BROADCAST)
 984                 return ct | QETH_CAST_BROADCAST;
 985         return ct | QETH_CAST_UNICAST;
 986 }
 987
 988 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 989 {
 990         int rc;
 991
 992         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 993
 994         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 995                 dev_info(&card->gdev->dev,
 996                         "set adapter parameters not supported.\n");
 997                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 998                 return 0;
 999         }
1000         rc = qeth_query_setadapterparms(card);
1001         if (rc) {
1002                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1003                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1004                 return rc;
1005         }
1006         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1007                 rc = qeth_setadpparms_change_macaddr(card);
1008                 if (rc)
1009                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1010                                 " address failed\n");
1011         }
1012
1013         return rc;
1014 }
1015
1016 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1017                         struct qeth_reply *reply, unsigned long data)
1018 {
1019         struct qeth_ipa_cmd *cmd;
1020
1021         QETH_CARD_TEXT(card, 4, "defadpcb");
1022
1023         cmd = (struct qeth_ipa_cmd *) data;
1024         if (cmd->hdr.return_code == 0) {
1025                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1026                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1027                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1028                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1029                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1030         }
1031         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1032             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1033                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1034                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1035         }
1036         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1037             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1038                 card->info.tx_csum_mask =
1039                         cmd->data.setassparms.data.flags_32bit;
1040                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1041         }
1042
1043         return 0;
1044 }
1045
1046 #ifdef CONFIG_QETH_IPV6
1047 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1048                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1049 {
1050         int rc;
1051         struct qeth_cmd_buffer *iob;
1052
1053         QETH_CARD_TEXT(card, 4, "simassp6");
1054         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
1055                                        0, QETH_PROT_IPV6);
1056         if (!iob)
1057                 return -ENOMEM;
1058         rc = qeth_send_setassparms(card, iob, 0, 0,
1059                                    qeth_l3_default_setassparms_cb, NULL);
1060         return rc;
1061 }
1062 #endif
1063
1064 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1065 {
1066         int rc;
1067
1068         QETH_CARD_TEXT(card, 3, "ipaarp");
1069
1070         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1071                 dev_info(&card->gdev->dev,
1072                         "ARP processing not supported on %s!\n",
1073                         QETH_CARD_IFNAME(card));
1074                 return 0;
1075         }
1076         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1077                                           IPA_CMD_ASS_START, 0);
1078         if (rc) {
1079                 dev_warn(&card->gdev->dev,
1080                         "Starting ARP processing support for %s failed\n",
1081                         QETH_CARD_IFNAME(card));
1082         }
1083         return rc;
1084 }
1085
1086 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1087 {
1088         int rc;
1089
1090         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1091
1092         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1093                 dev_info(&card->gdev->dev,
1094                         "Hardware IP fragmentation not supported on %s\n",
1095                         QETH_CARD_IFNAME(card));
1096                 return  -EOPNOTSUPP;
1097         }
1098
1099         rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1100                                           IPA_CMD_ASS_START, 0);
1101         if (rc) {
1102                 dev_warn(&card->gdev->dev,
1103                         "Starting IP fragmentation support for %s failed\n",
1104                         QETH_CARD_IFNAME(card));
1105         } else
1106                 dev_info(&card->gdev->dev,
1107                         "Hardware IP fragmentation enabled \n");
1108         return rc;
1109 }
1110
1111 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1112 {
1113         int rc;
1114
1115         QETH_CARD_TEXT(card, 3, "stsrcmac");
1116
1117         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1118                 dev_info(&card->gdev->dev,
1119                         "Inbound source MAC-address not supported on %s\n",
1120                         QETH_CARD_IFNAME(card));
1121                 return -EOPNOTSUPP;
1122         }
1123
1124         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
1125                                           IPA_CMD_ASS_START, 0);
1126         if (rc)
1127                 dev_warn(&card->gdev->dev,
1128                         "Starting source MAC-address support for %s failed\n",
1129                         QETH_CARD_IFNAME(card));
1130         return rc;
1131 }
1132
1133 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1134 {
1135         int rc = 0;
1136
1137         QETH_CARD_TEXT(card, 3, "strtvlan");
1138
1139         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1140                 dev_info(&card->gdev->dev,
1141                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1142                 return -EOPNOTSUPP;
1143         }
1144
1145         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
1146                                           IPA_CMD_ASS_START, 0);
1147         if (rc) {
1148                 dev_warn(&card->gdev->dev,
1149                         "Starting VLAN support for %s failed\n",
1150                         QETH_CARD_IFNAME(card));
1151         } else {
1152                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1153         }
1154         return rc;
1155 }
1156
1157 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1158 {
1159         int rc;
1160
1161         QETH_CARD_TEXT(card, 3, "stmcast");
1162
1163         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1164                 dev_info(&card->gdev->dev,
1165                         "Multicast not supported on %s\n",
1166                         QETH_CARD_IFNAME(card));
1167                 return -EOPNOTSUPP;
1168         }
1169
1170         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1171                                           IPA_CMD_ASS_START, 0);
1172         if (rc) {
1173                 dev_warn(&card->gdev->dev,
1174                         "Starting multicast support for %s failed\n",
1175                         QETH_CARD_IFNAME(card));
1176         } else {
1177                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1178                 card->dev->flags |= IFF_MULTICAST;
1179         }
1180         return rc;
1181 }
1182
1183 #ifdef CONFIG_QETH_IPV6
1184 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1185 {
1186         int rc;
1187
1188         QETH_CARD_TEXT(card, 3, "softipv6");
1189
1190         if (card->info.type == QETH_CARD_TYPE_IQD)
1191                 goto out;
1192
1193         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1194         if (rc) {
1195                 dev_err(&card->gdev->dev,
1196                         "Activating IPv6 support for %s failed\n",
1197                         QETH_CARD_IFNAME(card));
1198                 return rc;
1199         }
1200         rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1201                                           IPA_CMD_ASS_START, 3);
1202         if (rc) {
1203                 dev_err(&card->gdev->dev,
1204                         "Activating IPv6 support for %s failed\n",
1205                         QETH_CARD_IFNAME(card));
1206                 return rc;
1207         }
1208         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1209                                                IPA_CMD_ASS_START);
1210         if (rc) {
1211                 dev_err(&card->gdev->dev,
1212                         "Activating IPv6 support for %s failed\n",
1213                          QETH_CARD_IFNAME(card));
1214                 return rc;
1215         }
1216         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1217                                                IPA_CMD_ASS_START);
1218         if (rc) {
1219                 dev_warn(&card->gdev->dev,
1220                         "Enabling the passthrough mode for %s failed\n",
1221                         QETH_CARD_IFNAME(card));
1222                 return rc;
1223         }
1224 out:
1225         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1226         return 0;
1227 }
1228 #endif
1229
1230 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1231 {
1232         int rc = 0;
1233
1234         QETH_CARD_TEXT(card, 3, "strtipv6");
1235
1236         if (!qeth_is_supported(card, IPA_IPV6)) {
1237                 dev_info(&card->gdev->dev,
1238                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1239                 return 0;
1240         }
1241 #ifdef CONFIG_QETH_IPV6
1242         rc = qeth_l3_softsetup_ipv6(card);
1243 #endif
1244         return rc ;
1245 }
1246
1247 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1248 {
1249         int rc;
1250
1251         QETH_CARD_TEXT(card, 3, "stbrdcst");
1252         card->info.broadcast_capable = 0;
1253         if (!qeth_is_supported(card, IPA_FILTERING)) {
1254                 dev_info(&card->gdev->dev,
1255                         "Broadcast not supported on %s\n",
1256                         QETH_CARD_IFNAME(card));
1257                 rc = -EOPNOTSUPP;
1258                 goto out;
1259         }
1260         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1261                                           IPA_CMD_ASS_START, 0);
1262         if (rc) {
1263                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1264                         "%s failed\n", QETH_CARD_IFNAME(card));
1265                 goto out;
1266         }
1267
1268         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1269                                           IPA_CMD_ASS_CONFIGURE, 1);
1270         if (rc) {
1271                 dev_warn(&card->gdev->dev,
1272                         "Setting up broadcast filtering for %s failed\n",
1273                         QETH_CARD_IFNAME(card));
1274                 goto out;
1275         }
1276         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1277         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1278         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1279                                           IPA_CMD_ASS_ENABLE, 1);
1280         if (rc) {
1281                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1282                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1283                 goto out;
1284         }
1285         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1286 out:
1287         if (card->info.broadcast_capable)
1288                 card->dev->flags |= IFF_BROADCAST;
1289         else
1290                 card->dev->flags &= ~IFF_BROADCAST;
1291         return rc;
1292 }
1293
1294 static void qeth_l3_start_ipa_checksum(struct qeth_card *card)
1295 {
1296         QETH_CARD_TEXT(card, 3, "strtcsum");
1297         if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)
1298             && (card->dev->features & NETIF_F_RXCSUM))
1299                 qeth_set_rx_csum(card, 1);
1300 }
1301
1302 static void qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1303 {
1304         QETH_CARD_TEXT(card, 3, "strttxcs");
1305         qeth_start_ipa_tx_checksum(card);
1306 }
1307
1308 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1309 {
1310         int rc;
1311
1312         QETH_CARD_TEXT(card, 3, "sttso");
1313
1314         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1315                 dev_info(&card->gdev->dev,
1316                         "Outbound TSO not supported on %s\n",
1317                         QETH_CARD_IFNAME(card));
1318                 rc = -EOPNOTSUPP;
1319         } else {
1320                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1321                                                   IPA_CMD_ASS_START, 0);
1322                 if (rc)
1323                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1324                                 "segmentation offload for %s failed\n",
1325                                 QETH_CARD_IFNAME(card));
1326                 else
1327                         dev_info(&card->gdev->dev,
1328                                 "Outbound TSO enabled\n");
1329         }
1330         if (rc)
1331                 card->dev->features &= ~NETIF_F_TSO;
1332         return rc;
1333 }
1334
1335 static int qeth_l3_start_ipassists(struct qeth_card *card)
1336 {
1337         QETH_CARD_TEXT(card, 3, "strtipas");
1338
1339         if (qeth_set_access_ctrl_online(card, 0))
1340                 return -EIO;
1341         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1342         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1343         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1344         qeth_l3_start_ipa_vlan(card);           /* go on*/
1345         qeth_l3_start_ipa_multicast(card);              /* go on*/
1346         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1347         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1348         qeth_l3_start_ipa_checksum(card);               /* go on*/
1349         qeth_l3_start_ipa_tx_checksum(card);
1350         qeth_l3_start_ipa_tso(card);            /* go on*/
1351         return 0;
1352 }
1353
1354 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1355                 struct qeth_reply *reply, unsigned long data)
1356 {
1357         struct qeth_ipa_cmd *cmd;
1358
1359         cmd = (struct qeth_ipa_cmd *) data;
1360         if (cmd->hdr.return_code == 0)
1361                 memcpy(card->dev->dev_addr,
1362                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1363         else
1364                 eth_random_addr(card->dev->dev_addr);
1365
1366         return 0;
1367 }
1368
1369 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1370 {
1371         int rc = 0;
1372         struct qeth_cmd_buffer *iob;
1373         struct qeth_ipa_cmd *cmd;
1374
1375         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1376
1377         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1378                                      QETH_PROT_IPV6);
1379         if (!iob)
1380                 return -ENOMEM;
1381         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1382         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1383                         card->info.unique_id;
1384
1385         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1386                                 NULL);
1387         return rc;
1388 }
1389
1390 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1391                 struct qeth_reply *reply, unsigned long data)
1392 {
1393         struct qeth_ipa_cmd *cmd;
1394
1395         cmd = (struct qeth_ipa_cmd *) data;
1396         if (cmd->hdr.return_code == 0)
1397                 card->info.unique_id = *((__u16 *)
1398                                 &cmd->data.create_destroy_addr.unique_id[6]);
1399         else {
1400                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1401                                         UNIQUE_ID_NOT_BY_CARD;
1402                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1403                         "generate a unique ID\n");
1404         }
1405         return 0;
1406 }
1407
1408 static int qeth_l3_get_unique_id(struct qeth_card *card)
1409 {
1410         int rc = 0;
1411         struct qeth_cmd_buffer *iob;
1412         struct qeth_ipa_cmd *cmd;
1413
1414         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1415
1416         if (!qeth_is_supported(card, IPA_IPV6)) {
1417                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1418                                         UNIQUE_ID_NOT_BY_CARD;
1419                 return 0;
1420         }
1421
1422         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1423                                      QETH_PROT_IPV6);
1424         if (!iob)
1425                 return -ENOMEM;
1426         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1427         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1428                         card->info.unique_id;
1429
1430         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1431         return rc;
1432 }
1433
1434 static int
1435 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1436                             unsigned long data)
1437 {
1438         struct qeth_ipa_cmd        *cmd;
1439         __u16 rc;
1440
1441         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1442
1443         cmd = (struct qeth_ipa_cmd *)data;
1444         rc = cmd->hdr.return_code;
1445         if (rc)
1446                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1447         switch (cmd->data.diagass.action) {
1448         case QETH_DIAGS_CMD_TRACE_QUERY:
1449                 break;
1450         case QETH_DIAGS_CMD_TRACE_DISABLE:
1451                 switch (rc) {
1452                 case 0:
1453                 case IPA_RC_INVALID_SUBCMD:
1454                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1455                         dev_info(&card->gdev->dev, "The HiperSockets network "
1456                                 "traffic analyzer is deactivated\n");
1457                         break;
1458                 default:
1459                         break;
1460                 }
1461                 break;
1462         case QETH_DIAGS_CMD_TRACE_ENABLE:
1463                 switch (rc) {
1464                 case 0:
1465                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1466                         dev_info(&card->gdev->dev, "The HiperSockets network "
1467                                 "traffic analyzer is activated\n");
1468                         break;
1469                 case IPA_RC_HARDWARE_AUTH_ERROR:
1470                         dev_warn(&card->gdev->dev, "The device is not "
1471                                 "authorized to run as a HiperSockets network "
1472                                 "traffic analyzer\n");
1473                         break;
1474                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1475                         dev_warn(&card->gdev->dev, "A HiperSockets "
1476                                 "network traffic analyzer is already "
1477                                 "active in the HiperSockets LAN\n");
1478                         break;
1479                 default:
1480                         break;
1481                 }
1482                 break;
1483         default:
1484                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1485                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1486         }
1487
1488         return 0;
1489 }
1490
1491 static int
1492 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1493 {
1494         struct qeth_cmd_buffer *iob;
1495         struct qeth_ipa_cmd    *cmd;
1496
1497         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1498
1499         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1500         if (!iob)
1501                 return -ENOMEM;
1502         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1503         cmd->data.diagass.subcmd_len = 16;
1504         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1505         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1506         cmd->data.diagass.action = diags_cmd;
1507         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1508 }
1509
1510 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1511                                 struct net_device *dev)
1512 {
1513         ip_eth_mc_map(ipm, mac);
1514 }
1515
1516 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1517 {
1518         struct qeth_ipaddr *ipm;
1519         struct ip_mc_list *im4;
1520         char buf[MAX_ADDR_LEN];
1521
1522         QETH_CARD_TEXT(card, 4, "addmc");
1523         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1524              im4 = rcu_dereference(im4->next_rcu)) {
1525                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1526                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1527                 if (!ipm)
1528                         continue;
1529                 ipm->u.a4.addr = im4->multiaddr;
1530                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1531                 ipm->is_multicast = 1;
1532                 if (!qeth_l3_add_ip(card, ipm))
1533                         kfree(ipm);
1534         }
1535 }
1536
1537 /* called with rcu_read_lock */
1538 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1539 {
1540         struct in_device *in_dev;
1541         u16 vid;
1542
1543         QETH_CARD_TEXT(card, 4, "addmcvl");
1544         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1545                 return;
1546
1547         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1548                 struct net_device *netdev;
1549
1550                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1551                                               vid);
1552                 if (netdev == NULL ||
1553                     !(netdev->flags & IFF_UP))
1554                         continue;
1555                 in_dev = __in_dev_get_rcu(netdev);
1556                 if (!in_dev)
1557                         continue;
1558                 qeth_l3_add_mc(card, in_dev);
1559         }
1560 }
1561
1562 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1563 {
1564         struct in_device *in4_dev;
1565
1566         QETH_CARD_TEXT(card, 4, "chkmcv4");
1567         rcu_read_lock();
1568         in4_dev = __in_dev_get_rcu(card->dev);
1569         if (in4_dev == NULL)
1570                 goto unlock;
1571         qeth_l3_add_mc(card, in4_dev);
1572         qeth_l3_add_vlan_mc(card);
1573 unlock:
1574         rcu_read_unlock();
1575 }
1576
1577 #ifdef CONFIG_QETH_IPV6
1578 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1579 {
1580         struct qeth_ipaddr *ipm;
1581         struct ifmcaddr6 *im6;
1582         char buf[MAX_ADDR_LEN];
1583
1584         QETH_CARD_TEXT(card, 4, "addmc6");
1585         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1586                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1587                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1588                 if (!ipm)
1589                         continue;
1590                 ipm->is_multicast = 1;
1591                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1592                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1593                        sizeof(struct in6_addr));
1594                 if (!qeth_l3_add_ip(card, ipm))
1595                         kfree(ipm);
1596         }
1597 }
1598
1599 /* called with rcu_read_lock */
1600 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1601 {
1602         struct inet6_dev *in_dev;
1603         u16 vid;
1604
1605         QETH_CARD_TEXT(card, 4, "admc6vl");
1606         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1607                 return;
1608
1609         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1610                 struct net_device *netdev;
1611
1612                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1613                                               vid);
1614                 if (netdev == NULL ||
1615                     !(netdev->flags & IFF_UP))
1616                         continue;
1617                 in_dev = in6_dev_get(netdev);
1618                 if (!in_dev)
1619                         continue;
1620                 read_lock_bh(&in_dev->lock);
1621                 qeth_l3_add_mc6(card, in_dev);
1622                 read_unlock_bh(&in_dev->lock);
1623                 in6_dev_put(in_dev);
1624         }
1625 }
1626
1627 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1628 {
1629         struct inet6_dev *in6_dev;
1630
1631         QETH_CARD_TEXT(card, 4, "chkmcv6");
1632         if (!qeth_is_supported(card, IPA_IPV6))
1633                 return ;
1634         in6_dev = in6_dev_get(card->dev);
1635         if (in6_dev == NULL)
1636                 return;
1637         rcu_read_lock();
1638         read_lock_bh(&in6_dev->lock);
1639         qeth_l3_add_mc6(card, in6_dev);
1640         qeth_l3_add_vlan_mc6(card);
1641         read_unlock_bh(&in6_dev->lock);
1642         rcu_read_unlock();
1643         in6_dev_put(in6_dev);
1644 }
1645 #endif /* CONFIG_QETH_IPV6 */
1646
1647 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1648                         unsigned short vid)
1649 {
1650         struct in_device *in_dev;
1651         struct in_ifaddr *ifa;
1652         struct qeth_ipaddr *addr;
1653         struct net_device *netdev;
1654
1655         QETH_CARD_TEXT(card, 4, "frvaddr4");
1656
1657         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1658         if (!netdev)
1659                 return;
1660         in_dev = in_dev_get(netdev);
1661         if (!in_dev)
1662                 return;
1663         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1664                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1665                 if (addr) {
1666                         addr->u.a4.addr = ifa->ifa_address;
1667                         addr->u.a4.mask = ifa->ifa_mask;
1668                         addr->type = QETH_IP_TYPE_NORMAL;
1669                         if (!qeth_l3_delete_ip(card, addr))
1670                                 kfree(addr);
1671                 }
1672         }
1673         in_dev_put(in_dev);
1674 }
1675
1676 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1677                         unsigned short vid)
1678 {
1679 #ifdef CONFIG_QETH_IPV6
1680         struct inet6_dev *in6_dev;
1681         struct inet6_ifaddr *ifa;
1682         struct qeth_ipaddr *addr;
1683         struct net_device *netdev;
1684
1685         QETH_CARD_TEXT(card, 4, "frvaddr6");
1686
1687         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1688         if (!netdev)
1689                 return;
1690         in6_dev = in6_dev_get(netdev);
1691         if (!in6_dev)
1692                 return;
1693         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1694                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1695                 if (addr) {
1696                         memcpy(&addr->u.a6.addr, &ifa->addr,
1697                                sizeof(struct in6_addr));
1698                         addr->u.a6.pfxlen = ifa->prefix_len;
1699                         addr->type = QETH_IP_TYPE_NORMAL;
1700                         if (!qeth_l3_delete_ip(card, addr))
1701                                 kfree(addr);
1702                 }
1703         }
1704         in6_dev_put(in6_dev);
1705 #endif /* CONFIG_QETH_IPV6 */
1706 }
1707
1708 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1709                         unsigned short vid)
1710 {
1711         rcu_read_lock();
1712         qeth_l3_free_vlan_addresses4(card, vid);
1713         qeth_l3_free_vlan_addresses6(card, vid);
1714         rcu_read_unlock();
1715 }
1716
1717 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1718                                    __be16 proto, u16 vid)
1719 {
1720         struct qeth_card *card = dev->ml_priv;
1721
1722         set_bit(vid, card->active_vlans);
1723         return 0;
1724 }
1725
1726 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1727                                     __be16 proto, u16 vid)
1728 {
1729         struct qeth_card *card = dev->ml_priv;
1730         unsigned long flags;
1731
1732         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1733         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1734                 QETH_CARD_TEXT(card, 3, "kidREC");
1735                 return 0;
1736         }
1737         spin_lock_irqsave(&card->vlanlock, flags);
1738         /* unregister IP addresses of vlan device */
1739         qeth_l3_free_vlan_addresses(card, vid);
1740         clear_bit(vid, card->active_vlans);
1741         spin_unlock_irqrestore(&card->vlanlock, flags);
1742         qeth_l3_set_multicast_list(card->dev);
1743         return 0;
1744 }
1745
1746 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1747                         struct sk_buff *skb, struct qeth_hdr *hdr,
1748                         unsigned short *vlan_id)
1749 {
1750         __be16 prot;
1751         struct iphdr *ip_hdr;
1752         unsigned char tg_addr[MAX_ADDR_LEN];
1753         int is_vlan = 0;
1754
1755         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1756                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1757                               ETH_P_IP);
1758                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1759                 case QETH_CAST_MULTICAST:
1760                         switch (prot) {
1761 #ifdef CONFIG_QETH_IPV6
1762                         case __constant_htons(ETH_P_IPV6):
1763                                 ndisc_mc_map((struct in6_addr *)
1764                                      skb->data + 24,
1765                                      tg_addr, card->dev, 0);
1766                                 break;
1767 #endif
1768                         case __constant_htons(ETH_P_IP):
1769                                 ip_hdr = (struct iphdr *)skb->data;
1770                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1771                                 break;
1772                         default:
1773                                 memcpy(tg_addr, card->dev->broadcast,
1774                                         card->dev->addr_len);
1775                         }
1776                         card->stats.multicast++;
1777                         skb->pkt_type = PACKET_MULTICAST;
1778                         break;
1779                 case QETH_CAST_BROADCAST:
1780                         memcpy(tg_addr, card->dev->broadcast,
1781                                 card->dev->addr_len);
1782                         card->stats.multicast++;
1783                         skb->pkt_type = PACKET_BROADCAST;
1784                         break;
1785                 case QETH_CAST_UNICAST:
1786                 case QETH_CAST_ANYCAST:
1787                 case QETH_CAST_NOCAST:
1788                 default:
1789                         if (card->options.sniffer)
1790                                 skb->pkt_type = PACKET_OTHERHOST;
1791                         else
1792                                 skb->pkt_type = PACKET_HOST;
1793                         memcpy(tg_addr, card->dev->dev_addr,
1794                                 card->dev->addr_len);
1795                 }
1796                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1797                         card->dev->header_ops->create(skb, card->dev, prot,
1798                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1799                                 card->dev->addr_len);
1800                 else
1801                         card->dev->header_ops->create(skb, card->dev, prot,
1802                                 tg_addr, "FAKELL", card->dev->addr_len);
1803         }
1804
1805         skb->protocol = eth_type_trans(skb, card->dev);
1806
1807         if (hdr->hdr.l3.ext_flags &
1808             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1809                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1810                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1811                 is_vlan = 1;
1812         }
1813
1814         if (card->dev->features & NETIF_F_RXCSUM) {
1815                 if ((hdr->hdr.l3.ext_flags &
1816                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1817                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1818                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1819                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1820                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1821                 else
1822                         skb->ip_summed = CHECKSUM_NONE;
1823         } else
1824                 skb->ip_summed = CHECKSUM_NONE;
1825         return is_vlan;
1826 }
1827
1828 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1829                                 int budget, int *done)
1830 {
1831         int work_done = 0;
1832         struct sk_buff *skb;
1833         struct qeth_hdr *hdr;
1834         __u16 vlan_tag = 0;
1835         int is_vlan;
1836         unsigned int len;
1837         __u16 magic;
1838
1839         *done = 0;
1840         WARN_ON_ONCE(!budget);
1841         while (budget) {
1842                 skb = qeth_core_get_next_skb(card,
1843                         &card->qdio.in_q->bufs[card->rx.b_index],
1844                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1845                 if (!skb) {
1846                         *done = 1;
1847                         break;
1848                 }
1849                 skb->dev = card->dev;
1850                 switch (hdr->hdr.l3.id) {
1851                 case QETH_HEADER_TYPE_LAYER3:
1852                         magic = *(__u16 *)skb->data;
1853                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1854                             (magic == ETH_P_AF_IUCV)) {
1855                                 skb->protocol = ETH_P_AF_IUCV;
1856                                 skb->pkt_type = PACKET_HOST;
1857                                 skb->mac_header = NET_SKB_PAD;
1858                                 skb->dev = card->dev;
1859                                 len = skb->len;
1860                                 card->dev->header_ops->create(skb, card->dev, 0,
1861                                         card->dev->dev_addr, "FAKELL",
1862                                         card->dev->addr_len);
1863                                 netif_receive_skb(skb);
1864                         } else {
1865                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1866                                                       &vlan_tag);
1867                                 len = skb->len;
1868                                 if (is_vlan && !card->options.sniffer)
1869                                         __vlan_hwaccel_put_tag(skb,
1870                                                 htons(ETH_P_8021Q), vlan_tag);
1871                                 napi_gro_receive(&card->napi, skb);
1872                         }
1873                         break;
1874                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1875                         skb->pkt_type = PACKET_HOST;
1876                         skb->protocol = eth_type_trans(skb, skb->dev);
1877                         len = skb->len;
1878                         netif_receive_skb(skb);
1879                         break;
1880                 default:
1881                         dev_kfree_skb_any(skb);
1882                         QETH_CARD_TEXT(card, 3, "inbunkno");
1883                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1884                         continue;
1885                 }
1886                 work_done++;
1887                 budget--;
1888                 card->stats.rx_packets++;
1889                 card->stats.rx_bytes += len;
1890         }
1891         return work_done;
1892 }
1893
1894 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1895 {
1896         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1897         int work_done = 0;
1898         struct qeth_qdio_buffer *buffer;
1899         int done;
1900         int new_budget = budget;
1901
1902         if (card->options.performance_stats) {
1903                 card->perf_stats.inbound_cnt++;
1904                 card->perf_stats.inbound_start_time = qeth_get_micros();
1905         }
1906
1907         while (1) {
1908                 if (!card->rx.b_count) {
1909                         card->rx.qdio_err = 0;
1910                         card->rx.b_count = qdio_get_next_buffers(
1911                                 card->data.ccwdev, 0, &card->rx.b_index,
1912                                 &card->rx.qdio_err);
1913                         if (card->rx.b_count <= 0) {
1914                                 card->rx.b_count = 0;
1915                                 break;
1916                         }
1917                         card->rx.b_element =
1918                                 &card->qdio.in_q->bufs[card->rx.b_index]
1919                                 .buffer->element[0];
1920                         card->rx.e_offset = 0;
1921                 }
1922
1923                 while (card->rx.b_count) {
1924                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
1925                         if (!(card->rx.qdio_err &&
1926                             qeth_check_qdio_errors(card, buffer->buffer,
1927                             card->rx.qdio_err, "qinerr")))
1928                                 work_done += qeth_l3_process_inbound_buffer(
1929                                         card, new_budget, &done);
1930                         else
1931                                 done = 1;
1932
1933                         if (done) {
1934                                 if (card->options.performance_stats)
1935                                         card->perf_stats.bufs_rec++;
1936                                 qeth_put_buffer_pool_entry(card,
1937                                         buffer->pool_entry);
1938                                 qeth_queue_input_buffer(card, card->rx.b_index);
1939                                 card->rx.b_count--;
1940                                 if (card->rx.b_count) {
1941                                         card->rx.b_index =
1942                                                 (card->rx.b_index + 1) %
1943                                                 QDIO_MAX_BUFFERS_PER_Q;
1944                                         card->rx.b_element =
1945                                                 &card->qdio.in_q
1946                                                 ->bufs[card->rx.b_index]
1947                                                 .buffer->element[0];
1948                                         card->rx.e_offset = 0;
1949                                 }
1950                         }
1951
1952                         if (work_done >= budget)
1953                                 goto out;
1954                         else
1955                                 new_budget = budget - work_done;
1956                 }
1957         }
1958
1959         napi_complete(napi);
1960         if (qdio_start_irq(card->data.ccwdev, 0))
1961                 napi_schedule(&card->napi);
1962 out:
1963         if (card->options.performance_stats)
1964                 card->perf_stats.inbound_time += qeth_get_micros() -
1965                         card->perf_stats.inbound_start_time;
1966         return work_done;
1967 }
1968
1969 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1970                         struct qeth_card *card)
1971 {
1972         int rc = 0;
1973         u16 vid;
1974
1975         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1976                 struct net_device *netdev;
1977
1978                 rcu_read_lock();
1979                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1980                                               vid);
1981                 rcu_read_unlock();
1982                 if (netdev == dev) {
1983                         rc = QETH_VLAN_CARD;
1984                         break;
1985                 }
1986         }
1987
1988         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
1989                 return 0;
1990
1991         return rc;
1992 }
1993
1994 static int qeth_l3_verify_dev(struct net_device *dev)
1995 {
1996         struct qeth_card *card;
1997         unsigned long flags;
1998         int rc = 0;
1999
2000         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2001         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2002                 if (card->dev == dev) {
2003                         rc = QETH_REAL_CARD;
2004                         break;
2005                 }
2006                 rc = qeth_l3_verify_vlan_dev(dev, card);
2007                 if (rc)
2008                         break;
2009         }
2010         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2011
2012         return rc;
2013 }
2014
2015 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2016 {
2017         struct qeth_card *card = NULL;
2018         int rc;
2019
2020         rc = qeth_l3_verify_dev(dev);
2021         if (rc == QETH_REAL_CARD)
2022                 card = dev->ml_priv;
2023         else if (rc == QETH_VLAN_CARD)
2024                 card = vlan_dev_real_dev(dev)->ml_priv;
2025         if (card && card->options.layer2)
2026                 card = NULL;
2027         if (card)
2028                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2029         return card ;
2030 }
2031
2032 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2033 {
2034         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2035         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2036
2037         qeth_set_allowed_threads(card, 0, 1);
2038         if (card->options.sniffer &&
2039             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2040                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2041         if (card->read.state == CH_STATE_UP &&
2042             card->write.state == CH_STATE_UP &&
2043             (card->state == CARD_STATE_UP)) {
2044                 if (recovery_mode)
2045                         qeth_l3_stop(card->dev);
2046                 else {
2047                         rtnl_lock();
2048                         dev_close(card->dev);
2049                         rtnl_unlock();
2050                 }
2051                 card->state = CARD_STATE_SOFTSETUP;
2052         }
2053         if (card->state == CARD_STATE_SOFTSETUP) {
2054                 qeth_l3_clear_ip_list(card, 1);
2055                 qeth_clear_ipacmd_list(card);
2056                 card->state = CARD_STATE_HARDSETUP;
2057         }
2058         if (card->state == CARD_STATE_HARDSETUP) {
2059                 qeth_qdio_clear_card(card, 0);
2060                 qeth_clear_qdio_buffers(card);
2061                 qeth_clear_working_pool_list(card);
2062                 card->state = CARD_STATE_DOWN;
2063         }
2064         if (card->state == CARD_STATE_DOWN) {
2065                 qeth_clear_cmd_buffers(&card->read);
2066                 qeth_clear_cmd_buffers(&card->write);
2067         }
2068 }
2069
2070 /*
2071  * test for and Switch promiscuous mode (on or off)
2072  *  either for guestlan or HiperSocket Sniffer
2073  */
2074 static void
2075 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2076 {
2077         struct net_device *dev = card->dev;
2078
2079         if (((dev->flags & IFF_PROMISC) &&
2080              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2081             (!(dev->flags & IFF_PROMISC) &&
2082              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2083                 return;
2084
2085         if (card->info.guestlan) {              /* Guestlan trace */
2086                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2087                         qeth_setadp_promisc_mode(card);
2088         } else if (card->options.sniffer &&     /* HiperSockets trace */
2089                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2090                 if (dev->flags & IFF_PROMISC) {
2091                         QETH_CARD_TEXT(card, 3, "+promisc");
2092                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2093                 } else {
2094                         QETH_CARD_TEXT(card, 3, "-promisc");
2095                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2096                 }
2097         }
2098 }
2099
2100 static void qeth_l3_set_multicast_list(struct net_device *dev)
2101 {
2102         struct qeth_card *card = dev->ml_priv;
2103
2104         QETH_CARD_TEXT(card, 3, "setmulti");
2105         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2106             (card->state != CARD_STATE_UP))
2107                 return;
2108         if (!card->options.sniffer) {
2109                 qeth_l3_delete_mc_addresses(card);
2110                 qeth_l3_add_multicast_ipv4(card);
2111 #ifdef CONFIG_QETH_IPV6
2112                 qeth_l3_add_multicast_ipv6(card);
2113 #endif
2114                 qeth_l3_set_ip_addr_list(card);
2115                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2116                         return;
2117         }
2118         qeth_l3_handle_promisc_mode(card);
2119 }
2120
2121 static const char *qeth_l3_arp_get_error_cause(int *rc)
2122 {
2123         switch (*rc) {
2124         case QETH_IPA_ARP_RC_FAILED:
2125                 *rc = -EIO;
2126                 return "operation failed";
2127         case QETH_IPA_ARP_RC_NOTSUPP:
2128                 *rc = -EOPNOTSUPP;
2129                 return "operation not supported";
2130         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2131                 *rc = -EINVAL;
2132                 return "argument out of range";
2133         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2134                 *rc = -EOPNOTSUPP;
2135                 return "query operation not supported";
2136         case QETH_IPA_ARP_RC_Q_NO_DATA:
2137                 *rc = -ENOENT;
2138                 return "no query data available";
2139         default:
2140                 return "unknown error";
2141         }
2142 }
2143
2144 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2145 {
2146         int tmp;
2147         int rc;
2148
2149         QETH_CARD_TEXT(card, 3, "arpstnoe");
2150
2151         /*
2152          * currently GuestLAN only supports the ARP assist function
2153          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2154          * thus we say EOPNOTSUPP for this ARP function
2155          */
2156         if (card->info.guestlan)
2157                 return -EOPNOTSUPP;
2158         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2159                 return -EOPNOTSUPP;
2160         }
2161         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2162                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2163                                           no_entries);
2164         if (rc) {
2165                 tmp = rc;
2166                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2167                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2168                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2169         }
2170         return rc;
2171 }
2172
2173 static __u32 get_arp_entry_size(struct qeth_card *card,
2174                         struct qeth_arp_query_data *qdata,
2175                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2176 {
2177         __u32 rc;
2178         __u8 is_hsi;
2179
2180         is_hsi = qdata->reply_bits == 5;
2181         if (type->ip == QETHARP_IP_ADDR_V4) {
2182                 QETH_CARD_TEXT(card, 4, "arpev4");
2183                 if (strip_entries) {
2184                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2185                                 sizeof(struct qeth_arp_qi_entry7_short);
2186                 } else {
2187                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2188                                 sizeof(struct qeth_arp_qi_entry7);
2189                 }
2190         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2191                 QETH_CARD_TEXT(card, 4, "arpev6");
2192                 if (strip_entries) {
2193                         rc = is_hsi ?
2194                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2195                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2196                 } else {
2197                         rc = is_hsi ?
2198                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2199                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2200                 }
2201         } else {
2202                 QETH_CARD_TEXT(card, 4, "arpinv");
2203                 rc = 0;
2204         }
2205
2206         return rc;
2207 }
2208
2209 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2210 {
2211         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2212                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2213 }
2214
2215 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2216                 struct qeth_reply *reply, unsigned long data)
2217 {
2218         struct qeth_ipa_cmd *cmd;
2219         struct qeth_arp_query_data *qdata;
2220         struct qeth_arp_query_info *qinfo;
2221         int i;
2222         int e;
2223         int entrybytes_done;
2224         int stripped_bytes;
2225         __u8 do_strip_entries;
2226
2227         QETH_CARD_TEXT(card, 3, "arpquecb");
2228
2229         qinfo = (struct qeth_arp_query_info *) reply->param;
2230         cmd = (struct qeth_ipa_cmd *) data;
2231         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2232         if (cmd->hdr.return_code) {
2233                 QETH_CARD_TEXT(card, 4, "arpcberr");
2234                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2235                 return 0;
2236         }
2237         if (cmd->data.setassparms.hdr.return_code) {
2238                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2239                 QETH_CARD_TEXT(card, 4, "setaperr");
2240                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2241                 return 0;
2242         }
2243         qdata = &cmd->data.setassparms.data.query_arp;
2244         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2245
2246         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2247         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2248         entrybytes_done = 0;
2249         for (e = 0; e < qdata->no_entries; ++e) {
2250                 char *cur_entry;
2251                 __u32 esize;
2252                 struct qeth_arp_entrytype *etype;
2253
2254                 cur_entry = &qdata->data + entrybytes_done;
2255                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2256                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2257                         QETH_CARD_TEXT(card, 4, "pmis");
2258                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2259                         break;
2260                 }
2261                 esize = get_arp_entry_size(card, qdata, etype,
2262                         do_strip_entries);
2263                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2264                 if (!esize)
2265                         break;
2266
2267                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2268                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2269                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2270                         goto out_error;
2271                 }
2272
2273                 memcpy(qinfo->udata + qinfo->udata_offset,
2274                         &qdata->data + entrybytes_done + stripped_bytes,
2275                         esize);
2276                 entrybytes_done += esize + stripped_bytes;
2277                 qinfo->udata_offset += esize;
2278                 ++qinfo->no_entries;
2279         }
2280         /* check if all replies received ... */
2281         if (cmd->data.setassparms.hdr.seq_no <
2282             cmd->data.setassparms.hdr.number_of_replies)
2283                 return 1;
2284         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2285         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2286         /* keep STRIP_ENTRIES flag so the user program can distinguish
2287          * stripped entries from normal ones */
2288         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2289                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2290         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2291         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2292         return 0;
2293 out_error:
2294         i = 0;
2295         memcpy(qinfo->udata, &i, 4);
2296         return 0;
2297 }
2298
2299 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2300                 struct qeth_cmd_buffer *iob, int len,
2301                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2302                         unsigned long),
2303                 void *reply_param)
2304 {
2305         QETH_CARD_TEXT(card, 4, "sendarp");
2306
2307         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2308         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2309                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2310         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2311                                       reply_cb, reply_param);
2312 }
2313
2314 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2315         enum qeth_prot_versions prot,
2316         struct qeth_arp_query_info *qinfo)
2317 {
2318         struct qeth_cmd_buffer *iob;
2319         struct qeth_ipa_cmd *cmd;
2320         int tmp;
2321         int rc;
2322
2323         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2324
2325         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2326                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2327                                        sizeof(struct qeth_arp_query_data)
2328                                                 - sizeof(char),
2329                                        prot);
2330         if (!iob)
2331                 return -ENOMEM;
2332         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2333         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2334         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2335         cmd->data.setassparms.data.query_arp.no_entries = 0;
2336         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2337                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2338                            qeth_l3_arp_query_cb, (void *)qinfo);
2339         if (rc) {
2340                 tmp = rc;
2341                 QETH_DBF_MESSAGE(2,
2342                         "Error while querying ARP cache on %s: %s "
2343                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2344                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2345         }
2346
2347         return rc;
2348 }
2349
2350 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2351 {
2352         struct qeth_arp_query_info qinfo = {0, };
2353         int rc;
2354
2355         QETH_CARD_TEXT(card, 3, "arpquery");
2356
2357         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2358                                IPA_ARP_PROCESSING)) {
2359                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2360                 rc = -EOPNOTSUPP;
2361                 goto out;
2362         }
2363         /* get size of userspace buffer and mask_bits -> 6 bytes */
2364         if (copy_from_user(&qinfo, udata, 6)) {
2365                 rc = -EFAULT;
2366                 goto out;
2367         }
2368         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2369         if (!qinfo.udata) {
2370                 rc = -ENOMEM;
2371                 goto out;
2372         }
2373         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2374         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2375         if (rc) {
2376                 if (copy_to_user(udata, qinfo.udata, 4))
2377                         rc = -EFAULT;
2378                         goto free_and_out;
2379         } else {
2380 #ifdef CONFIG_QETH_IPV6
2381                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2382                         /* fails in case of GuestLAN QDIO mode */
2383                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2384                                 &qinfo);
2385                 }
2386 #endif
2387                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2388                         QETH_CARD_TEXT(card, 4, "qactf");
2389                         rc = -EFAULT;
2390                         goto free_and_out;
2391                 }
2392                 QETH_CARD_TEXT(card, 4, "qacts");
2393         }
2394 free_and_out:
2395         kfree(qinfo.udata);
2396 out:
2397         return rc;
2398 }
2399
2400 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2401                                 struct qeth_arp_cache_entry *entry)
2402 {
2403         struct qeth_cmd_buffer *iob;
2404         char buf[16];
2405         int tmp;
2406         int rc;
2407
2408         QETH_CARD_TEXT(card, 3, "arpadent");
2409
2410         /*
2411          * currently GuestLAN only supports the ARP assist function
2412          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2413          * thus we say EOPNOTSUPP for this ARP function
2414          */
2415         if (card->info.guestlan)
2416                 return -EOPNOTSUPP;
2417         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2418                 return -EOPNOTSUPP;
2419         }
2420
2421         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2422                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2423                                        sizeof(struct qeth_arp_cache_entry),
2424                                        QETH_PROT_IPV4);
2425         if (!iob)
2426                 return -ENOMEM;
2427         rc = qeth_send_setassparms(card, iob,
2428                                    sizeof(struct qeth_arp_cache_entry),
2429                                    (unsigned long) entry,
2430                                    qeth_l3_default_setassparms_cb, NULL);
2431         if (rc) {
2432                 tmp = rc;
2433                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2434                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2435                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2436                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2437         }
2438         return rc;
2439 }
2440
2441 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2442                                 struct qeth_arp_cache_entry *entry)
2443 {
2444         struct qeth_cmd_buffer *iob;
2445         char buf[16] = {0, };
2446         int tmp;
2447         int rc;
2448
2449         QETH_CARD_TEXT(card, 3, "arprment");
2450
2451         /*
2452          * currently GuestLAN only supports the ARP assist function
2453          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2454          * thus we say EOPNOTSUPP for this ARP function
2455          */
2456         if (card->info.guestlan)
2457                 return -EOPNOTSUPP;
2458         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2459                 return -EOPNOTSUPP;
2460         }
2461         memcpy(buf, entry, 12);
2462         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2463                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2464                                        12,
2465                                        QETH_PROT_IPV4);
2466         if (!iob)
2467                 return -ENOMEM;
2468         rc = qeth_send_setassparms(card, iob,
2469                                    12, (unsigned long)buf,
2470                                    qeth_l3_default_setassparms_cb, NULL);
2471         if (rc) {
2472                 tmp = rc;
2473                 memset(buf, 0, 16);
2474                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2475                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2476                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2477                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2478         }
2479         return rc;
2480 }
2481
2482 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2483 {
2484         int rc;
2485         int tmp;
2486
2487         QETH_CARD_TEXT(card, 3, "arpflush");
2488
2489         /*
2490          * currently GuestLAN only supports the ARP assist function
2491          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2492          * thus we say EOPNOTSUPP for this ARP function
2493         */
2494         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2495                 return -EOPNOTSUPP;
2496         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2497                 return -EOPNOTSUPP;
2498         }
2499         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2500                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2501         if (rc) {
2502                 tmp = rc;
2503                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2504                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2505                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2506         }
2507         return rc;
2508 }
2509
2510 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2511 {
2512         struct qeth_card *card = dev->ml_priv;
2513         struct qeth_arp_cache_entry arp_entry;
2514         struct mii_ioctl_data *mii_data;
2515         int rc = 0;
2516
2517         if (!card)
2518                 return -ENODEV;
2519
2520         if (!qeth_card_hw_is_reachable(card))
2521                 return -ENODEV;
2522
2523         switch (cmd) {
2524         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2525                 if (!capable(CAP_NET_ADMIN)) {
2526                         rc = -EPERM;
2527                         break;
2528                 }
2529                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2530                 break;
2531         case SIOC_QETH_ARP_QUERY_INFO:
2532                 if (!capable(CAP_NET_ADMIN)) {
2533                         rc = -EPERM;
2534                         break;
2535                 }
2536                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2537                 break;
2538         case SIOC_QETH_ARP_ADD_ENTRY:
2539                 if (!capable(CAP_NET_ADMIN)) {
2540                         rc = -EPERM;
2541                         break;
2542                 }
2543                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2544                                    sizeof(struct qeth_arp_cache_entry)))
2545                         rc = -EFAULT;
2546                 else
2547                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2548                 break;
2549         case SIOC_QETH_ARP_REMOVE_ENTRY:
2550                 if (!capable(CAP_NET_ADMIN)) {
2551                         rc = -EPERM;
2552                         break;
2553                 }
2554                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2555                                    sizeof(struct qeth_arp_cache_entry)))
2556                         rc = -EFAULT;
2557                 else
2558                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2559                 break;
2560         case SIOC_QETH_ARP_FLUSH_CACHE:
2561                 if (!capable(CAP_NET_ADMIN)) {
2562                         rc = -EPERM;
2563                         break;
2564                 }
2565                 rc = qeth_l3_arp_flush_cache(card);
2566                 break;
2567         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2568                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2569                 break;
2570         case SIOC_QETH_GET_CARD_TYPE:
2571                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2572                      card->info.type == QETH_CARD_TYPE_OSX) &&
2573                     !card->info.guestlan)
2574                         return 1;
2575                 return 0;
2576                 break;
2577         case SIOCGMIIPHY:
2578                 mii_data = if_mii(rq);
2579                 mii_data->phy_id = 0;
2580                 break;
2581         case SIOCGMIIREG:
2582                 mii_data = if_mii(rq);
2583                 if (mii_data->phy_id != 0)
2584                         rc = -EINVAL;
2585                 else
2586                         mii_data->val_out = qeth_mdio_read(dev,
2587                                                         mii_data->phy_id,
2588                                                         mii_data->reg_num);
2589                 break;
2590         case SIOC_QETH_QUERY_OAT:
2591                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2592                 break;
2593         default:
2594                 rc = -EOPNOTSUPP;
2595         }
2596         if (rc)
2597                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2598         return rc;
2599 }
2600
2601 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2602 {
2603         int cast_type = RTN_UNSPEC;
2604         struct neighbour *n = NULL;
2605         struct dst_entry *dst;
2606
2607         rcu_read_lock();
2608         dst = skb_dst(skb);
2609         if (dst)
2610                 n = dst_neigh_lookup_skb(dst, skb);
2611         if (n) {
2612                 cast_type = n->type;
2613                 rcu_read_unlock();
2614                 neigh_release(n);
2615                 if ((cast_type == RTN_BROADCAST) ||
2616                     (cast_type == RTN_MULTICAST) ||
2617                     (cast_type == RTN_ANYCAST))
2618                         return cast_type;
2619                 else
2620                         return RTN_UNSPEC;
2621         }
2622         rcu_read_unlock();
2623
2624         /* try something else */
2625         if (skb->protocol == ETH_P_IPV6)
2626                 return (skb_network_header(skb)[24] == 0xff) ?
2627                                 RTN_MULTICAST : 0;
2628         else if (skb->protocol == ETH_P_IP)
2629                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2630                                 RTN_MULTICAST : 0;
2631         /* ... */
2632         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2633                 return RTN_BROADCAST;
2634         else {
2635                 u16 hdr_mac;
2636
2637                 hdr_mac = *((u16 *)skb->data);
2638                 /* tr multicast? */
2639                 switch (card->info.link_type) {
2640                 case QETH_LINK_TYPE_HSTR:
2641                 case QETH_LINK_TYPE_LANE_TR:
2642                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2643                             (hdr_mac == QETH_TR_MAC_C))
2644                                 return RTN_MULTICAST;
2645                         break;
2646                 /* eth or so multicast? */
2647                 default:
2648                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2649                             (hdr_mac == QETH_ETH_MAC_V6))
2650                                 return RTN_MULTICAST;
2651                 }
2652         }
2653         return cast_type;
2654 }
2655
2656 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2657                 struct qeth_hdr *hdr, struct sk_buff *skb)
2658 {
2659         char daddr[16];
2660         struct af_iucv_trans_hdr *iucv_hdr;
2661
2662         skb_pull(skb, 14);
2663         card->dev->header_ops->create(skb, card->dev, 0,
2664                                       card->dev->dev_addr, card->dev->dev_addr,
2665                                       card->dev->addr_len);
2666         skb_pull(skb, 14);
2667         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2668         memset(hdr, 0, sizeof(struct qeth_hdr));
2669         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2670         hdr->hdr.l3.ext_flags = 0;
2671         hdr->hdr.l3.length = skb->len;
2672         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2673         memset(daddr, 0, sizeof(daddr));
2674         daddr[0] = 0xfe;
2675         daddr[1] = 0x80;
2676         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2677         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2678 }
2679
2680 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2681                 struct sk_buff *skb, int ipv, int cast_type)
2682 {
2683         struct dst_entry *dst;
2684
2685         memset(hdr, 0, sizeof(struct qeth_hdr));
2686         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2687         hdr->hdr.l3.ext_flags = 0;
2688
2689         /*
2690          * before we're going to overwrite this location with next hop ip.
2691          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2692          */
2693         if (skb_vlan_tag_present(skb)) {
2694                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2695                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2696                 else
2697                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2698                 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2699         }
2700
2701         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2702
2703         rcu_read_lock();
2704         dst = skb_dst(skb);
2705         if (ipv == 4) {
2706                 struct rtable *rt = (struct rtable *) dst;
2707                 __be32 *pkey = &ip_hdr(skb)->daddr;
2708
2709                 if (rt->rt_gateway)
2710                         pkey = &rt->rt_gateway;
2711
2712                 /* IPv4 */
2713                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2714                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2715                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2716         } else if (ipv == 6) {
2717                 struct rt6_info *rt = (struct rt6_info *) dst;
2718                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2719
2720                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2721                         pkey = &rt->rt6i_gateway;
2722
2723                 /* IPv6 */
2724                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2725                 if (card->info.type == QETH_CARD_TYPE_IQD)
2726                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2727                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2728         } else {
2729                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2730                             skb->dev->broadcast, 6)) {
2731                         /* broadcast? */
2732                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2733                                                 QETH_HDR_PASSTHRU;
2734                 } else {
2735                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2736                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2737                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2738                 }
2739         }
2740         rcu_read_unlock();
2741 }
2742
2743 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2744                 struct qeth_hdr *hdr, struct sk_buff *skb)
2745 {
2746         struct iphdr *iph = ip_hdr(skb);
2747
2748         /* tcph->check contains already the pseudo hdr checksum
2749          * so just set the header flags
2750          */
2751         if (iph->protocol == IPPROTO_UDP)
2752                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2753         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2754                 QETH_HDR_EXT_CSUM_HDR_REQ;
2755         iph->check = 0;
2756         if (card->options.performance_stats)
2757                 card->perf_stats.tx_csum++;
2758 }
2759
2760 static void qeth_tso_fill_header(struct qeth_card *card,
2761                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2762 {
2763         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2764         struct tcphdr *tcph = tcp_hdr(skb);
2765         struct iphdr *iph = ip_hdr(skb);
2766         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2767
2768         /*fix header to TSO values ...*/
2769         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2770         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2771         /*set values which are fix for the first approach ...*/
2772         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2773         hdr->ext.imb_hdr_no  = 1;
2774         hdr->ext.hdr_type    = 1;
2775         hdr->ext.hdr_version = 1;
2776         hdr->ext.hdr_len     = 28;
2777         /*insert non-fix values */
2778         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2779         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2780         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2781                                        sizeof(struct qeth_hdr_tso));
2782         tcph->check = 0;
2783         if (skb->protocol == ETH_P_IPV6) {
2784                 ip6h->payload_len = 0;
2785                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2786                                                0, IPPROTO_TCP, 0);
2787         } else {
2788                 /*OSA want us to set these values ...*/
2789                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2790                                          0, IPPROTO_TCP, 0);
2791                 iph->tot_len = 0;
2792                 iph->check = 0;
2793         }
2794 }
2795
2796 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2797 {
2798         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2799                 tcp_hdr(skb)->doff * 4;
2800         int tcpd_len = skb_headlen(skb) - (tcpd - (unsigned long)skb->data);
2801         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2802
2803         elements += qeth_get_elements_for_frags(skb);
2804
2805         return elements;
2806 }
2807
2808 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2809 {
2810         int rc;
2811         u16 *tag;
2812         struct qeth_hdr *hdr = NULL;
2813         int elements_needed = 0;
2814         int elems;
2815         struct qeth_card *card = dev->ml_priv;
2816         struct sk_buff *new_skb = NULL;
2817         int ipv = qeth_get_ip_version(skb);
2818         int cast_type = qeth_l3_get_cast_type(card, skb);
2819         struct qeth_qdio_out_q *queue =
2820                 card->qdio.out_qs[card->qdio.do_prio_queueing
2821                         || (cast_type && card->info.is_multicast_different) ?
2822                         qeth_get_priority_queue(card, skb, ipv, cast_type) :
2823                         card->qdio.default_out_queue];
2824         int tx_bytes = skb->len;
2825         bool large_send;
2826         int data_offset = -1;
2827         int nr_frags;
2828
2829         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2830              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2831               ((card->options.cq == QETH_CQ_ENABLED) &&
2832                (skb->protocol != ETH_P_AF_IUCV)))) ||
2833             card->options.sniffer)
2834                         goto tx_drop;
2835
2836         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2837                 card->stats.tx_carrier_errors++;
2838                 goto tx_drop;
2839         }
2840
2841         if ((cast_type == RTN_BROADCAST) &&
2842             (card->info.broadcast_capable == 0))
2843                 goto tx_drop;
2844
2845         if (card->options.performance_stats) {
2846                 card->perf_stats.outbound_cnt++;
2847                 card->perf_stats.outbound_start_time = qeth_get_micros();
2848         }
2849
2850         large_send = skb_is_gso(skb);
2851
2852         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2853             (skb_shinfo(skb)->nr_frags == 0)) {
2854                 new_skb = skb;
2855                 if (new_skb->protocol == ETH_P_AF_IUCV)
2856                         data_offset = 0;
2857                 else
2858                         data_offset = ETH_HLEN;
2859                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2860                 if (!hdr)
2861                         goto tx_drop;
2862                 elements_needed++;
2863         } else {
2864                 /* create a clone with writeable headroom */
2865                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2866                                         + VLAN_HLEN);
2867                 if (!new_skb)
2868                         goto tx_drop;
2869         }
2870
2871         if (card->info.type == QETH_CARD_TYPE_IQD) {
2872                 if (data_offset < 0)
2873                         skb_pull(new_skb, ETH_HLEN);
2874         } else {
2875                 if (ipv == 4) {
2876                         skb_pull(new_skb, ETH_HLEN);
2877                 }
2878
2879                 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2880                         skb_push(new_skb, VLAN_HLEN);
2881                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2882                         skb_copy_to_linear_data_offset(new_skb, 4,
2883                                 new_skb->data + 8, 4);
2884                         skb_copy_to_linear_data_offset(new_skb, 8,
2885                                 new_skb->data + 12, 4);
2886                         tag = (u16 *)(new_skb->data + 12);
2887                         *tag = __constant_htons(ETH_P_8021Q);
2888                         *(tag + 1) = htons(skb_vlan_tag_get(new_skb));
2889                 }
2890         }
2891
2892         netif_stop_queue(dev);
2893
2894         /* fix hardware limitation: as long as we do not have sbal
2895          * chaining we can not send long frag lists
2896          */
2897         if (large_send) {
2898                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2899                         if (skb_linearize(new_skb))
2900                                 goto tx_drop;
2901                         if (card->options.performance_stats)
2902                                 card->perf_stats.tx_lin++;
2903                 }
2904         }
2905
2906         if (large_send && (cast_type == RTN_UNSPEC)) {
2907                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2908                                                 sizeof(struct qeth_hdr_tso));
2909                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2910                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2911                 qeth_tso_fill_header(card, hdr, new_skb);
2912                 elements_needed++;
2913         } else {
2914                 if (data_offset < 0) {
2915                         hdr = (struct qeth_hdr *)skb_push(new_skb,
2916                                                 sizeof(struct qeth_hdr));
2917                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2918                                                 cast_type);
2919                 } else {
2920                         if (new_skb->protocol == ETH_P_AF_IUCV)
2921                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2922                         else {
2923                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2924                                                         cast_type);
2925                                 hdr->hdr.l3.length = new_skb->len - data_offset;
2926                         }
2927                 }
2928
2929                 if (skb->ip_summed == CHECKSUM_PARTIAL)
2930                         qeth_l3_hdr_csum(card, hdr, new_skb);
2931         }
2932
2933         elems = qeth_get_elements_no(card, new_skb, elements_needed);
2934         if (!elems) {
2935                 if (data_offset >= 0)
2936                         kmem_cache_free(qeth_core_header_cache, hdr);
2937                 goto tx_drop;
2938         }
2939         elements_needed += elems;
2940         nr_frags = skb_shinfo(new_skb)->nr_frags;
2941
2942         if (card->info.type != QETH_CARD_TYPE_IQD) {
2943                 int len;
2944                 if (large_send)
2945                         len = ((unsigned long)tcp_hdr(new_skb) +
2946                                 tcp_hdr(new_skb)->doff * 4) -
2947                                 (unsigned long)new_skb->data;
2948                 else
2949                         len = sizeof(struct qeth_hdr_layer3);
2950
2951                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2952                         goto tx_drop;
2953                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
2954                                          elements_needed);
2955         } else
2956                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2957                                         elements_needed, data_offset, 0);
2958
2959         if (!rc) {
2960                 card->stats.tx_packets++;
2961                 card->stats.tx_bytes += tx_bytes;
2962                 if (new_skb != skb)
2963                         dev_kfree_skb_any(skb);
2964                 if (card->options.performance_stats) {
2965                         if (large_send) {
2966                                 card->perf_stats.large_send_bytes += tx_bytes;
2967                                 card->perf_stats.large_send_cnt++;
2968                         }
2969                         if (nr_frags) {
2970                                 card->perf_stats.sg_skbs_sent++;
2971                                 /* nr_frags + skb->data */
2972                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
2973                         }
2974                 }
2975                 rc = NETDEV_TX_OK;
2976         } else {
2977                 if (data_offset >= 0)
2978                         kmem_cache_free(qeth_core_header_cache, hdr);
2979
2980                 if (rc == -EBUSY) {
2981                         if (new_skb != skb)
2982                                 dev_kfree_skb_any(new_skb);
2983                         return NETDEV_TX_BUSY;
2984                 } else
2985                         goto tx_drop;
2986         }
2987
2988         netif_wake_queue(dev);
2989         if (card->options.performance_stats)
2990                 card->perf_stats.outbound_time += qeth_get_micros() -
2991                         card->perf_stats.outbound_start_time;
2992         return rc;
2993
2994 tx_drop:
2995         card->stats.tx_dropped++;
2996         card->stats.tx_errors++;
2997         if ((new_skb != skb) && new_skb)
2998                 dev_kfree_skb_any(new_skb);
2999         dev_kfree_skb_any(skb);
3000         netif_wake_queue(dev);
3001         return NETDEV_TX_OK;
3002 }
3003
3004 static int __qeth_l3_open(struct net_device *dev)
3005 {
3006         struct qeth_card *card = dev->ml_priv;
3007         int rc = 0;
3008
3009         QETH_CARD_TEXT(card, 4, "qethopen");
3010         if (card->state == CARD_STATE_UP)
3011                 return rc;
3012         if (card->state != CARD_STATE_SOFTSETUP)
3013                 return -ENODEV;
3014         card->data.state = CH_STATE_UP;
3015         card->state = CARD_STATE_UP;
3016         netif_start_queue(dev);
3017
3018         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3019                 napi_enable(&card->napi);
3020                 napi_schedule(&card->napi);
3021         } else
3022                 rc = -EIO;
3023         return rc;
3024 }
3025
3026 static int qeth_l3_open(struct net_device *dev)
3027 {
3028         struct qeth_card *card = dev->ml_priv;
3029
3030         QETH_CARD_TEXT(card, 5, "qethope_");
3031         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3032                 QETH_CARD_TEXT(card, 3, "openREC");
3033                 return -ERESTARTSYS;
3034         }
3035         return __qeth_l3_open(dev);
3036 }
3037
3038 static int qeth_l3_stop(struct net_device *dev)
3039 {
3040         struct qeth_card *card = dev->ml_priv;
3041
3042         QETH_CARD_TEXT(card, 4, "qethstop");
3043         netif_tx_disable(dev);
3044         if (card->state == CARD_STATE_UP) {
3045                 card->state = CARD_STATE_SOFTSETUP;
3046                 napi_disable(&card->napi);
3047         }
3048         return 0;
3049 }
3050
3051 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3052         netdev_features_t features)
3053 {
3054         struct qeth_card *card = dev->ml_priv;
3055
3056         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3057                 features &= ~NETIF_F_IP_CSUM;
3058         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3059                 features &= ~NETIF_F_TSO;
3060         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3061                 features &= ~NETIF_F_RXCSUM;
3062         return features;
3063 }
3064
3065 static int qeth_l3_set_features(struct net_device *dev,
3066         netdev_features_t features)
3067 {
3068         struct qeth_card *card = dev->ml_priv;
3069         netdev_features_t changed = dev->features ^ features;
3070
3071         if (!(changed & NETIF_F_RXCSUM))
3072                 return 0;
3073
3074         if (card->state == CARD_STATE_DOWN ||
3075             card->state == CARD_STATE_RECOVER)
3076                 return 0;
3077
3078         return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0);
3079 }
3080
3081 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3082         .get_link = ethtool_op_get_link,
3083         .get_strings = qeth_core_get_strings,
3084         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3085         .get_sset_count = qeth_core_get_sset_count,
3086         .get_drvinfo = qeth_core_get_drvinfo,
3087         .get_settings = qeth_core_ethtool_get_settings,
3088 };
3089
3090 /*
3091  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3092  * NOARP on the netdevice is no option because it also turns off neighbor
3093  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3094  * arp resolution but we want the hard header (packet socket will work
3095  * e.g. tcpdump)
3096  */
3097 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3098 {
3099         n->nud_state = NUD_NOARP;
3100         memcpy(n->ha, "FAKELL", 6);
3101         n->output = n->ops->connected_output;
3102         return 0;
3103 }
3104
3105 static int
3106 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3107 {
3108         if (np->tbl->family == AF_INET)
3109                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3110
3111         return 0;
3112 }
3113
3114 static const struct net_device_ops qeth_l3_netdev_ops = {
3115         .ndo_open               = qeth_l3_open,
3116         .ndo_stop               = qeth_l3_stop,
3117         .ndo_get_stats          = qeth_get_stats,
3118         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3119         .ndo_validate_addr      = eth_validate_addr,
3120         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3121         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3122         .ndo_change_mtu         = qeth_change_mtu,
3123         .ndo_fix_features       = qeth_l3_fix_features,
3124         .ndo_set_features       = qeth_l3_set_features,
3125         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3126         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3127         .ndo_tx_timeout         = qeth_tx_timeout,
3128 };
3129
3130 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3131         .ndo_open               = qeth_l3_open,
3132         .ndo_stop               = qeth_l3_stop,
3133         .ndo_get_stats          = qeth_get_stats,
3134         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3135         .ndo_validate_addr      = eth_validate_addr,
3136         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3137         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3138         .ndo_change_mtu         = qeth_change_mtu,
3139         .ndo_fix_features       = qeth_l3_fix_features,
3140         .ndo_set_features       = qeth_l3_set_features,
3141         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3142         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3143         .ndo_tx_timeout         = qeth_tx_timeout,
3144         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3145 };
3146
3147 static int qeth_l3_setup_netdev(struct qeth_card *card)
3148 {
3149         int rc;
3150
3151         if (card->info.type == QETH_CARD_TYPE_OSD ||
3152             card->info.type == QETH_CARD_TYPE_OSX) {
3153                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3154                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3155                         pr_info("qeth_l3: ignoring TR device\n");
3156                         return -ENODEV;
3157                 } else {
3158                         card->dev = alloc_etherdev(0);
3159                         if (!card->dev)
3160                                 return -ENODEV;
3161                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3162
3163                         /*IPv6 address autoconfiguration stuff*/
3164                         qeth_l3_get_unique_id(card);
3165                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3166                                 card->dev->dev_id = card->info.unique_id &
3167                                                          0xffff;
3168                         if (!card->info.guestlan) {
3169                                 card->dev->hw_features = NETIF_F_SG |
3170                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3171                                         NETIF_F_TSO;
3172                                 card->dev->features = NETIF_F_RXCSUM;
3173                         }
3174                 }
3175         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3176                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
3177                                          ether_setup);
3178                 if (!card->dev)
3179                         return -ENODEV;
3180                 card->dev->flags |= IFF_NOARP;
3181                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3182                 rc = qeth_l3_iqd_read_initial_mac(card);
3183                 if (rc)
3184                         return rc;
3185                 if (card->options.hsuid[0])
3186                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3187         } else
3188                 return -ENODEV;
3189
3190         card->dev->ml_priv = card;
3191         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3192         card->dev->mtu = card->info.initial_mtu;
3193         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
3194         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
3195                                 NETIF_F_HW_VLAN_CTAG_RX |
3196                                 NETIF_F_HW_VLAN_CTAG_FILTER;
3197         netif_keep_dst(card->dev);
3198         card->dev->gso_max_size = 15 * PAGE_SIZE;
3199
3200         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3201         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3202         netif_carrier_off(card->dev);
3203         return register_netdev(card->dev);
3204 }
3205
3206 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3207 {
3208         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3209
3210         qeth_l3_create_device_attributes(&gdev->dev);
3211         card->options.layer2 = 0;
3212         card->info.hwtrap = 0;
3213         return 0;
3214 }
3215
3216 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3217 {
3218         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3219
3220         qeth_l3_remove_device_attributes(&cgdev->dev);
3221
3222         qeth_set_allowed_threads(card, 0, 1);
3223         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3224
3225         if (cgdev->state == CCWGROUP_ONLINE)
3226                 qeth_l3_set_offline(cgdev);
3227
3228         if (card->dev) {
3229                 unregister_netdev(card->dev);
3230                 card->dev = NULL;
3231         }
3232
3233         qeth_l3_clear_ip_list(card, 0);
3234         qeth_l3_clear_ipato_list(card);
3235         return;
3236 }
3237
3238 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3239 {
3240         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3241         int rc = 0;
3242         enum qeth_card_states recover_flag;
3243
3244         mutex_lock(&card->discipline_mutex);
3245         mutex_lock(&card->conf_mutex);
3246         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3247         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3248
3249         recover_flag = card->state;
3250         rc = qeth_core_hardsetup_card(card);
3251         if (rc) {
3252                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3253                 rc = -ENODEV;
3254                 goto out_remove;
3255         }
3256
3257         if (!card->dev && qeth_l3_setup_netdev(card)) {
3258                 rc = -ENODEV;
3259                 goto out_remove;
3260         }
3261
3262         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3263                 if (card->info.hwtrap &&
3264                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3265                         card->info.hwtrap = 0;
3266         } else
3267                 card->info.hwtrap = 0;
3268
3269         card->state = CARD_STATE_HARDSETUP;
3270         memset(&card->rx, 0, sizeof(struct qeth_rx));
3271         qeth_print_status_message(card);
3272
3273         /* softsetup */
3274         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3275
3276         rc = qeth_send_startlan(card);
3277         if (rc) {
3278                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3279                 if (rc == 0xe080) {
3280                         dev_warn(&card->gdev->dev,
3281                                 "The LAN is offline\n");
3282                         card->lan_online = 0;
3283                         goto contin;
3284                 }
3285                 rc = -ENODEV;
3286                 goto out_remove;
3287         } else
3288                 card->lan_online = 1;
3289
3290 contin:
3291         rc = qeth_l3_setadapter_parms(card);
3292         if (rc)
3293                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3294         if (!card->options.sniffer) {
3295                 rc = qeth_l3_start_ipassists(card);
3296                 if (rc) {
3297                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3298                         goto out_remove;
3299                 }
3300                 rc = qeth_l3_setrouting_v4(card);
3301                 if (rc)
3302                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3303                 rc = qeth_l3_setrouting_v6(card);
3304                 if (rc)
3305                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3306         }
3307         netif_tx_disable(card->dev);
3308
3309         rc = qeth_init_qdio_queues(card);
3310         if (rc) {
3311                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3312                 rc = -ENODEV;
3313                 goto out_remove;
3314         }
3315         card->state = CARD_STATE_SOFTSETUP;
3316
3317         qeth_set_allowed_threads(card, 0xffffffff, 0);
3318         qeth_l3_set_ip_addr_list(card);
3319         if (card->lan_online)
3320                 netif_carrier_on(card->dev);
3321         else
3322                 netif_carrier_off(card->dev);
3323         if (recover_flag == CARD_STATE_RECOVER) {
3324                 rtnl_lock();
3325                 if (recovery_mode)
3326                         __qeth_l3_open(card->dev);
3327                 else
3328                         dev_open(card->dev);
3329                 qeth_l3_set_multicast_list(card->dev);
3330                 rtnl_unlock();
3331         }
3332         qeth_trace_features(card);
3333         /* let user_space know that device is online */
3334         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3335         mutex_unlock(&card->conf_mutex);
3336         mutex_unlock(&card->discipline_mutex);
3337         return 0;
3338 out_remove:
3339         qeth_l3_stop_card(card, 0);
3340         ccw_device_set_offline(CARD_DDEV(card));
3341         ccw_device_set_offline(CARD_WDEV(card));
3342         ccw_device_set_offline(CARD_RDEV(card));
3343         qdio_free(CARD_DDEV(card));
3344         if (recover_flag == CARD_STATE_RECOVER)
3345                 card->state = CARD_STATE_RECOVER;
3346         else
3347                 card->state = CARD_STATE_DOWN;
3348         mutex_unlock(&card->conf_mutex);
3349         mutex_unlock(&card->discipline_mutex);
3350         return rc;
3351 }
3352
3353 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3354 {
3355         return __qeth_l3_set_online(gdev, 0);
3356 }
3357
3358 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3359                         int recovery_mode)
3360 {
3361         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3362         int rc = 0, rc2 = 0, rc3 = 0;
3363         enum qeth_card_states recover_flag;
3364
3365         mutex_lock(&card->discipline_mutex);
3366         mutex_lock(&card->conf_mutex);
3367         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3368         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3369
3370         if (card->dev && netif_carrier_ok(card->dev))
3371                 netif_carrier_off(card->dev);
3372         recover_flag = card->state;
3373         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3374                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3375                 card->info.hwtrap = 1;
3376         }
3377         qeth_l3_stop_card(card, recovery_mode);
3378         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3379                 rtnl_lock();
3380                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3381                 rtnl_unlock();
3382         }
3383         rc  = ccw_device_set_offline(CARD_DDEV(card));
3384         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3385         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3386         if (!rc)
3387                 rc = (rc2) ? rc2 : rc3;
3388         if (rc)
3389                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3390         qdio_free(CARD_DDEV(card));
3391         if (recover_flag == CARD_STATE_UP)
3392                 card->state = CARD_STATE_RECOVER;
3393         /* let user_space know that device is offline */
3394         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3395         mutex_unlock(&card->conf_mutex);
3396         mutex_unlock(&card->discipline_mutex);
3397         return 0;
3398 }
3399
3400 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3401 {
3402         return __qeth_l3_set_offline(cgdev, 0);
3403 }
3404
3405 static int qeth_l3_recover(void *ptr)
3406 {
3407         struct qeth_card *card;
3408         int rc = 0;
3409
3410         card = (struct qeth_card *) ptr;
3411         QETH_CARD_TEXT(card, 2, "recover1");
3412         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3413         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3414                 return 0;
3415         QETH_CARD_TEXT(card, 2, "recover2");
3416         dev_warn(&card->gdev->dev,
3417                 "A recovery process has been started for the device\n");
3418         qeth_set_recovery_task(card);
3419         __qeth_l3_set_offline(card->gdev, 1);
3420         rc = __qeth_l3_set_online(card->gdev, 1);
3421         if (!rc)
3422                 dev_info(&card->gdev->dev,
3423                         "Device successfully recovered!\n");
3424         else {
3425                 qeth_close_dev(card);
3426                 dev_warn(&card->gdev->dev, "The qeth device driver "
3427                                 "failed to recover an error on the device\n");
3428         }
3429         qeth_clear_recovery_task(card);
3430         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3431         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3432         return 0;
3433 }
3434
3435 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3436 {
3437         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3438         qeth_set_allowed_threads(card, 0, 1);
3439         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3440                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3441         qeth_qdio_clear_card(card, 0);
3442         qeth_clear_qdio_buffers(card);
3443         qdio_free(CARD_DDEV(card));
3444 }
3445
3446 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3447 {
3448         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3449
3450         if (card->dev)
3451                 netif_device_detach(card->dev);
3452         qeth_set_allowed_threads(card, 0, 1);
3453         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3454         if (gdev->state == CCWGROUP_OFFLINE)
3455                 return 0;
3456         if (card->state == CARD_STATE_UP) {
3457                 if (card->info.hwtrap)
3458                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3459                 __qeth_l3_set_offline(card->gdev, 1);
3460         } else
3461                 __qeth_l3_set_offline(card->gdev, 0);
3462         return 0;
3463 }
3464
3465 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3466 {
3467         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3468         int rc = 0;
3469
3470         if (gdev->state == CCWGROUP_OFFLINE)
3471                 goto out;
3472
3473         if (card->state == CARD_STATE_RECOVER) {
3474                 rc = __qeth_l3_set_online(card->gdev, 1);
3475                 if (rc) {
3476                         rtnl_lock();
3477                         dev_close(card->dev);
3478                         rtnl_unlock();
3479                 }
3480         } else
3481                 rc = __qeth_l3_set_online(card->gdev, 0);
3482 out:
3483         qeth_set_allowed_threads(card, 0xffffffff, 0);
3484         if (card->dev)
3485                 netif_device_attach(card->dev);
3486         if (rc)
3487                 dev_warn(&card->gdev->dev, "The qeth device driver "
3488                         "failed to recover an error on the device\n");
3489         return rc;
3490 }
3491
3492 /* Returns zero if the command is successfully "consumed" */
3493 static int qeth_l3_control_event(struct qeth_card *card,
3494                                         struct qeth_ipa_cmd *cmd)
3495 {
3496         return 1;
3497 }
3498
3499 struct qeth_discipline qeth_l3_discipline = {
3500         .start_poll = qeth_qdio_start_poll,
3501         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3502         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3503         .recover = qeth_l3_recover,
3504         .setup = qeth_l3_probe_device,
3505         .remove = qeth_l3_remove_device,
3506         .set_online = qeth_l3_set_online,
3507         .set_offline = qeth_l3_set_offline,
3508         .shutdown = qeth_l3_shutdown,
3509         .freeze = qeth_l3_pm_suspend,
3510         .thaw = qeth_l3_pm_resume,
3511         .restore = qeth_l3_pm_resume,
3512         .control_event_handler = qeth_l3_control_event,
3513 };
3514 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3515
3516 static int qeth_l3_ip_event(struct notifier_block *this,
3517                             unsigned long event, void *ptr)
3518 {
3519         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3520         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3521         struct qeth_ipaddr *addr;
3522         struct qeth_card *card;
3523
3524         if (dev_net(dev) != &init_net)
3525                 return NOTIFY_DONE;
3526
3527         card = qeth_l3_get_card_from_dev(dev);
3528         if (!card)
3529                 return NOTIFY_DONE;
3530         QETH_CARD_TEXT(card, 3, "ipevent");
3531
3532         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3533         if (addr != NULL) {
3534                 addr->u.a4.addr = ifa->ifa_address;
3535                 addr->u.a4.mask = ifa->ifa_mask;
3536                 addr->type = QETH_IP_TYPE_NORMAL;
3537         } else
3538                 goto out;
3539
3540         switch (event) {
3541         case NETDEV_UP:
3542                 if (!qeth_l3_add_ip(card, addr))
3543                         kfree(addr);
3544                 break;
3545         case NETDEV_DOWN:
3546                 if (!qeth_l3_delete_ip(card, addr))
3547                         kfree(addr);
3548                 break;
3549         default:
3550                 break;
3551         }
3552         qeth_l3_set_ip_addr_list(card);
3553 out:
3554         return NOTIFY_DONE;
3555 }
3556
3557 static struct notifier_block qeth_l3_ip_notifier = {
3558         qeth_l3_ip_event,
3559         NULL,
3560 };
3561
3562 #ifdef CONFIG_QETH_IPV6
3563 /**
3564  * IPv6 event handler
3565  */
3566 static int qeth_l3_ip6_event(struct notifier_block *this,
3567                              unsigned long event, void *ptr)
3568 {
3569         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3570         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3571         struct qeth_ipaddr *addr;
3572         struct qeth_card *card;
3573
3574         card = qeth_l3_get_card_from_dev(dev);
3575         if (!card)
3576                 return NOTIFY_DONE;
3577         QETH_CARD_TEXT(card, 3, "ip6event");
3578         if (!qeth_is_supported(card, IPA_IPV6))
3579                 return NOTIFY_DONE;
3580
3581         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3582         if (addr != NULL) {
3583                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3584                 addr->u.a6.pfxlen = ifa->prefix_len;
3585                 addr->type = QETH_IP_TYPE_NORMAL;
3586         } else
3587                 goto out;
3588
3589         switch (event) {
3590         case NETDEV_UP:
3591                 if (!qeth_l3_add_ip(card, addr))
3592                         kfree(addr);
3593                 break;
3594         case NETDEV_DOWN:
3595                 if (!qeth_l3_delete_ip(card, addr))
3596                         kfree(addr);
3597                 break;
3598         default:
3599                 break;
3600         }
3601         qeth_l3_set_ip_addr_list(card);
3602 out:
3603         return NOTIFY_DONE;
3604 }
3605
3606 static struct notifier_block qeth_l3_ip6_notifier = {
3607         qeth_l3_ip6_event,
3608         NULL,
3609 };
3610 #endif
3611
3612 static int qeth_l3_register_notifiers(void)
3613 {
3614         int rc;
3615
3616         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3617         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3618         if (rc)
3619                 return rc;
3620 #ifdef CONFIG_QETH_IPV6
3621         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3622         if (rc) {
3623                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3624                 return rc;
3625         }
3626 #else
3627         pr_warn("There is no IPv6 support for the layer 3 discipline\n");
3628 #endif
3629         return 0;
3630 }
3631
3632 static void qeth_l3_unregister_notifiers(void)
3633 {
3634
3635         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3636         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3637 #ifdef CONFIG_QETH_IPV6
3638         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3639 #endif /* QETH_IPV6 */
3640 }
3641
3642 static int __init qeth_l3_init(void)
3643 {
3644         int rc = 0;
3645
3646         pr_info("register layer 3 discipline\n");
3647         rc = qeth_l3_register_notifiers();
3648         return rc;
3649 }
3650
3651 static void __exit qeth_l3_exit(void)
3652 {
3653         qeth_l3_unregister_notifiers();
3654         pr_info("unregister layer 3 discipline\n");
3655 }
3656
3657 module_init(qeth_l3_init);
3658 module_exit(qeth_l3_exit);
3659 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3660 MODULE_DESCRIPTION("qeth layer 3 discipline");
3661 MODULE_LICENSE("GPL");