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 ((card->state != CARD_STATE_UP &&
 436              card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
 437                 return;
 438         }
 439
 440         spin_lock_irqsave(&card->ip_lock, flags);
 441         tbd_list = card->ip_tbd_list;
 442         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
 443         if (!card->ip_tbd_list) {
 444                 QETH_CARD_TEXT(card, 0, "silnomem");
 445                 card->ip_tbd_list = tbd_list;
 446                 spin_unlock_irqrestore(&card->ip_lock, flags);
 447                 return;
 448         } else
 449                 INIT_LIST_HEAD(card->ip_tbd_list);
 450
 451         while (!list_empty(tbd_list)) {
 452                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
 453                 list_del(&todo->entry);
 454                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
 455                         __qeth_l3_delete_all_mc(card, &flags);
 456                         kfree(todo);
 457                         continue;
 458                 }
 459                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
 460                 if (rc == 0) {
 461                         /* nothing to be done; only adjusted refcount */
 462                         kfree(todo);
 463                 } else if (rc == 1) {
 464                         /* new entry to be added to on-card list */
 465                         spin_unlock_irqrestore(&card->ip_lock, flags);
 466                         rc = qeth_l3_register_addr_entry(card, todo);
 467                         spin_lock_irqsave(&card->ip_lock, flags);
 468                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
 469                                 list_add_tail(&todo->entry, &card->ip_list);
 470                         else
 471                                 kfree(todo);
 472                 } else if (rc == -1) {
 473                         /* on-card entry to be removed */
 474                         list_del_init(&addr->entry);
 475                         spin_unlock_irqrestore(&card->ip_lock, flags);
 476                         rc = qeth_l3_deregister_addr_entry(card, addr);
 477                         spin_lock_irqsave(&card->ip_lock, flags);
 478                         if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
 479                                 kfree(addr);
 480                         else
 481                                 list_add_tail(&addr->entry, &card->ip_list);
 482                         kfree(todo);
 483                 }
 484         }
 485         spin_unlock_irqrestore(&card->ip_lock, flags);
 486         kfree(tbd_list);
 487 }
 488
 489 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
 490 {
 491         struct qeth_ipaddr *addr, *tmp;
 492         unsigned long flags;
 493
 494         QETH_CARD_TEXT(card, 4, "clearip");
 495         if (recover && card->options.sniffer)
 496                 return;
 497         spin_lock_irqsave(&card->ip_lock, flags);
 498         /* clear todo list */
 499         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
 500                 list_del(&addr->entry);
 501                 kfree(addr);
 502         }
 503
 504         while (!list_empty(&card->ip_list)) {
 505                 addr = list_entry(card->ip_list.next,
 506                                   struct qeth_ipaddr, entry);
 507                 list_del_init(&addr->entry);
 508                 if (!recover || addr->is_multicast) {
 509                         kfree(addr);
 510                         continue;
 511                 }
 512                 list_add_tail(&addr->entry, card->ip_tbd_list);
 513         }
 514         spin_unlock_irqrestore(&card->ip_lock, flags);
 515 }
 516
 517 static int qeth_l3_address_exists_in_list(struct list_head *list,
 518                 struct qeth_ipaddr *addr, int same_type)
 519 {
 520         struct qeth_ipaddr *tmp;
 521
 522         list_for_each_entry(tmp, list, entry) {
 523                 if ((tmp->proto == QETH_PROT_IPV4) &&
 524                     (addr->proto == QETH_PROT_IPV4) &&
 525                     ((same_type && (tmp->type == addr->type)) ||
 526                     (!same_type && (tmp->type != addr->type))) &&
 527                     (tmp->u.a4.addr == addr->u.a4.addr))
 528                         return 1;
 529
 530                 if ((tmp->proto == QETH_PROT_IPV6) &&
 531                     (addr->proto == QETH_PROT_IPV6) &&
 532                     ((same_type && (tmp->type == addr->type)) ||
 533                     (!same_type && (tmp->type != addr->type))) &&
 534                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 535                             sizeof(struct in6_addr)) == 0))
 536                         return 1;
 537
 538         }
 539         return 0;
 540 }
 541
 542 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 543                         struct qeth_ipaddr *addr, int ipacmd)
 544 {
 545         int rc;
 546         struct qeth_cmd_buffer *iob;
 547         struct qeth_ipa_cmd *cmd;
 548
 549         QETH_CARD_TEXT(card, 4, "setdelmc");
 550
 551         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 552         if (!iob)
 553                 return -ENOMEM;
 554         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 555         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 556         if (addr->proto == QETH_PROT_IPV6)
 557                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 558                        sizeof(struct in6_addr));
 559         else
 560                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 561
 562         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 563
 564         return rc;
 565 }
 566
 567 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 568 {
 569         int i, j;
 570         for (i = 0; i < 16; i++) {
 571                 j = (len) - (i * 8);
 572                 if (j >= 8)
 573                         netmask[i] = 0xff;
 574                 else if (j > 0)
 575                         netmask[i] = (u8)(0xFF00 >> j);
 576                 else
 577                         netmask[i] = 0;
 578         }
 579 }
 580
 581 static int qeth_l3_send_setdelip(struct qeth_card *card,
 582                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 583 {
 584         int rc;
 585         struct qeth_cmd_buffer *iob;
 586         struct qeth_ipa_cmd *cmd;
 587         __u8 netmask[16];
 588
 589         QETH_CARD_TEXT(card, 4, "setdelip");
 590         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 591
 592         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 593         if (!iob)
 594                 return -ENOMEM;
 595         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 596         if (addr->proto == QETH_PROT_IPV6) {
 597                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 598                        sizeof(struct in6_addr));
 599                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 600                 memcpy(cmd->data.setdelip6.mask, netmask,
 601                        sizeof(struct in6_addr));
 602                 cmd->data.setdelip6.flags = flags;
 603         } else {
 604                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 605                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 606                 cmd->data.setdelip4.flags = flags;
 607         }
 608
 609         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 610
 611         return rc;
 612 }
 613
 614 static int qeth_l3_send_setrouting(struct qeth_card *card,
 615         enum qeth_routing_types type, enum qeth_prot_versions prot)
 616 {
 617         int rc;
 618         struct qeth_ipa_cmd *cmd;
 619         struct qeth_cmd_buffer *iob;
 620
 621         QETH_CARD_TEXT(card, 4, "setroutg");
 622         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 623         if (!iob)
 624                 return -ENOMEM;
 625         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 626         cmd->data.setrtg.type = (type);
 627         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 628
 629         return rc;
 630 }
 631
 632 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 633                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 634 {
 635         if (card->info.type == QETH_CARD_TYPE_IQD) {
 636                 switch (*type) {
 637                 case NO_ROUTER:
 638                 case PRIMARY_CONNECTOR:
 639                 case SECONDARY_CONNECTOR:
 640                 case MULTICAST_ROUTER:
 641                         return 0;
 642                 default:
 643                         goto out_inval;
 644                 }
 645         } else {
 646                 switch (*type) {
 647                 case NO_ROUTER:
 648                 case PRIMARY_ROUTER:
 649                 case SECONDARY_ROUTER:
 650                         return 0;
 651                 case MULTICAST_ROUTER:
 652                         if (qeth_is_ipafunc_supported(card, prot,
 653                                                       IPA_OSA_MC_ROUTER))
 654                                 return 0;
 655                 default:
 656                         goto out_inval;
 657                 }
 658         }
 659 out_inval:
 660         *type = NO_ROUTER;
 661         return -EINVAL;
 662 }
 663
 664 int qeth_l3_setrouting_v4(struct qeth_card *card)
 665 {
 666         int rc;
 667
 668         QETH_CARD_TEXT(card, 3, "setrtg4");
 669
 670         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 671                                   QETH_PROT_IPV4);
 672         if (rc)
 673                 return rc;
 674
 675         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 676                                   QETH_PROT_IPV4);
 677         if (rc) {
 678                 card->options.route4.type = NO_ROUTER;
 679                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 680                         " on %s. Type set to 'no router'.\n", rc,
 681                         QETH_CARD_IFNAME(card));
 682         }
 683         return rc;
 684 }
 685
 686 int qeth_l3_setrouting_v6(struct qeth_card *card)
 687 {
 688         int rc = 0;
 689
 690         QETH_CARD_TEXT(card, 3, "setrtg6");
 691 #ifdef CONFIG_QETH_IPV6
 692
 693         if (!qeth_is_supported(card, IPA_IPV6))
 694                 return 0;
 695         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 696                                   QETH_PROT_IPV6);
 697         if (rc)
 698                 return rc;
 699
 700         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 701                                   QETH_PROT_IPV6);
 702         if (rc) {
 703                 card->options.route6.type = NO_ROUTER;
 704                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 705                         " on %s. Type set to 'no router'.\n", rc,
 706                         QETH_CARD_IFNAME(card));
 707         }
 708 #endif
 709         return rc;
 710 }
 711
 712 /*
 713  * IP address takeover related functions
 714  */
 715 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 716 {
 717
 718         struct qeth_ipato_entry *ipatoe, *tmp;
 719         unsigned long flags;
 720
 721         spin_lock_irqsave(&card->ip_lock, flags);
 722         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 723                 list_del(&ipatoe->entry);
 724                 kfree(ipatoe);
 725         }
 726         spin_unlock_irqrestore(&card->ip_lock, flags);
 727 }
 728
 729 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 730                                 struct qeth_ipato_entry *new)
 731 {
 732         struct qeth_ipato_entry *ipatoe;
 733         unsigned long flags;
 734         int rc = 0;
 735
 736         QETH_CARD_TEXT(card, 2, "addipato");
 737         spin_lock_irqsave(&card->ip_lock, flags);
 738         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 739                 if (ipatoe->proto != new->proto)
 740                         continue;
 741                 if (!memcmp(ipatoe->addr, new->addr,
 742                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 743                     (ipatoe->mask_bits == new->mask_bits)) {
 744                         rc = -EEXIST;
 745                         break;
 746                 }
 747         }
 748         if (!rc)
 749                 list_add_tail(&new->entry, &card->ipato.entries);
 750
 751         spin_unlock_irqrestore(&card->ip_lock, flags);
 752         return rc;
 753 }
 754
 755 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 756                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 757 {
 758         struct qeth_ipato_entry *ipatoe, *tmp;
 759         unsigned long flags;
 760
 761         QETH_CARD_TEXT(card, 2, "delipato");
 762         spin_lock_irqsave(&card->ip_lock, flags);
 763         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 764                 if (ipatoe->proto != proto)
 765                         continue;
 766                 if (!memcmp(ipatoe->addr, addr,
 767                             (proto == QETH_PROT_IPV4)? 4:16) &&
 768                     (ipatoe->mask_bits == mask_bits)) {
 769                         list_del(&ipatoe->entry);
 770                         kfree(ipatoe);
 771                 }
 772         }
 773         spin_unlock_irqrestore(&card->ip_lock, flags);
 774 }
 775
 776 /*
 777  * VIPA related functions
 778  */
 779 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 780               const u8 *addr)
 781 {
 782         struct qeth_ipaddr *ipaddr;
 783         unsigned long flags;
 784         int rc = 0;
 785
 786         ipaddr = qeth_l3_get_addr_buffer(proto);
 787         if (ipaddr) {
 788                 if (proto == QETH_PROT_IPV4) {
 789                         QETH_CARD_TEXT(card, 2, "addvipa4");
 790                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 791                         ipaddr->u.a4.mask = 0;
 792                 } else if (proto == QETH_PROT_IPV6) {
 793                         QETH_CARD_TEXT(card, 2, "addvipa6");
 794                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 795                         ipaddr->u.a6.pfxlen = 0;
 796                 }
 797                 ipaddr->type = QETH_IP_TYPE_VIPA;
 798                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 799                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 800         } else
 801                 return -ENOMEM;
 802         spin_lock_irqsave(&card->ip_lock, flags);
 803         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 804             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 805                 rc = -EEXIST;
 806         spin_unlock_irqrestore(&card->ip_lock, flags);
 807         if (rc) {
 808                 kfree(ipaddr);
 809                 return rc;
 810         }
 811         if (!qeth_l3_add_ip(card, ipaddr))
 812                 kfree(ipaddr);
 813         qeth_l3_set_ip_addr_list(card);
 814         return rc;
 815 }
 816
 817 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 818               const u8 *addr)
 819 {
 820         struct qeth_ipaddr *ipaddr;
 821
 822         ipaddr = qeth_l3_get_addr_buffer(proto);
 823         if (ipaddr) {
 824                 if (proto == QETH_PROT_IPV4) {
 825                         QETH_CARD_TEXT(card, 2, "delvipa4");
 826                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 827                         ipaddr->u.a4.mask = 0;
 828                 } else if (proto == QETH_PROT_IPV6) {
 829                         QETH_CARD_TEXT(card, 2, "delvipa6");
 830                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 831                         ipaddr->u.a6.pfxlen = 0;
 832                 }
 833                 ipaddr->type = QETH_IP_TYPE_VIPA;
 834         } else
 835                 return;
 836         if (!qeth_l3_delete_ip(card, ipaddr))
 837                 kfree(ipaddr);
 838         qeth_l3_set_ip_addr_list(card);
 839 }
 840
 841 /*
 842  * proxy ARP related functions
 843  */
 844 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 845               const u8 *addr)
 846 {
 847         struct qeth_ipaddr *ipaddr;
 848         unsigned long flags;
 849         int rc = 0;
 850
 851         ipaddr = qeth_l3_get_addr_buffer(proto);
 852         if (ipaddr) {
 853                 if (proto == QETH_PROT_IPV4) {
 854                         QETH_CARD_TEXT(card, 2, "addrxip4");
 855                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 856                         ipaddr->u.a4.mask = 0;
 857                 } else if (proto == QETH_PROT_IPV6) {
 858                         QETH_CARD_TEXT(card, 2, "addrxip6");
 859                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 860                         ipaddr->u.a6.pfxlen = 0;
 861                 }
 862                 ipaddr->type = QETH_IP_TYPE_RXIP;
 863                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 864                 ipaddr->del_flags = 0;
 865         } else
 866                 return -ENOMEM;
 867         spin_lock_irqsave(&card->ip_lock, flags);
 868         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 869             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 870                 rc = -EEXIST;
 871         spin_unlock_irqrestore(&card->ip_lock, flags);
 872         if (rc) {
 873                 kfree(ipaddr);
 874                 return rc;
 875         }
 876         if (!qeth_l3_add_ip(card, ipaddr))
 877                 kfree(ipaddr);
 878         qeth_l3_set_ip_addr_list(card);
 879         return 0;
 880 }
 881
 882 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 883                         const u8 *addr)
 884 {
 885         struct qeth_ipaddr *ipaddr;
 886
 887         ipaddr = qeth_l3_get_addr_buffer(proto);
 888         if (ipaddr) {
 889                 if (proto == QETH_PROT_IPV4) {
 890                         QETH_CARD_TEXT(card, 2, "addrxip4");
 891                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 892                         ipaddr->u.a4.mask = 0;
 893                 } else if (proto == QETH_PROT_IPV6) {
 894                         QETH_CARD_TEXT(card, 2, "addrxip6");
 895                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 896                         ipaddr->u.a6.pfxlen = 0;
 897                 }
 898                 ipaddr->type = QETH_IP_TYPE_RXIP;
 899         } else
 900                 return;
 901         if (!qeth_l3_delete_ip(card, ipaddr))
 902                 kfree(ipaddr);
 903         qeth_l3_set_ip_addr_list(card);
 904 }
 905
 906 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 907                                 struct qeth_ipaddr *addr)
 908 {
 909         char buf[50];
 910         int rc = 0;
 911         int cnt = 3;
 912
 913         if (addr->proto == QETH_PROT_IPV4) {
 914                 QETH_CARD_TEXT(card, 2, "setaddr4");
 915                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 916         } else if (addr->proto == QETH_PROT_IPV6) {
 917                 QETH_CARD_TEXT(card, 2, "setaddr6");
 918                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 919                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 920         } else {
 921                 QETH_CARD_TEXT(card, 2, "setaddr?");
 922                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 923         }
 924         do {
 925                 if (addr->is_multicast)
 926                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 927                 else
 928                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 929                                         addr->set_flags);
 930                 if (rc)
 931                         QETH_CARD_TEXT(card, 2, "failed");
 932         } while ((--cnt > 0) && rc);
 933         if (rc) {
 934                 QETH_CARD_TEXT(card, 2, "FAILED");
 935                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 936                 dev_warn(&card->gdev->dev,
 937                         "Registering IP address %s failed\n", buf);
 938         }
 939         return rc;
 940 }
 941
 942 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 943                                                 struct qeth_ipaddr *addr)
 944 {
 945         int rc = 0;
 946
 947         if (addr->proto == QETH_PROT_IPV4) {
 948                 QETH_CARD_TEXT(card, 2, "deladdr4");
 949                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 950         } else if (addr->proto == QETH_PROT_IPV6) {
 951                 QETH_CARD_TEXT(card, 2, "deladdr6");
 952                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 953                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 954         } else {
 955                 QETH_CARD_TEXT(card, 2, "deladdr?");
 956                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 957         }
 958         if (addr->is_multicast)
 959                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 960         else
 961                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 962                                         addr->del_flags);
 963         if (rc)
 964                 QETH_CARD_TEXT(card, 2, "failed");
 965
 966         return rc;
 967 }
 968
 969 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 970 {
 971         if (cast_type == RTN_MULTICAST)
 972                 return QETH_CAST_MULTICAST;
 973         if (cast_type == RTN_BROADCAST)
 974                 return QETH_CAST_BROADCAST;
 975         return QETH_CAST_UNICAST;
 976 }
 977
 978 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 979 {
 980         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 981         if (cast_type == RTN_MULTICAST)
 982                 return ct | QETH_CAST_MULTICAST;
 983         if (cast_type == RTN_ANYCAST)
 984                 return ct | QETH_CAST_ANYCAST;
 985         if (cast_type == RTN_BROADCAST)
 986                 return ct | QETH_CAST_BROADCAST;
 987         return ct | QETH_CAST_UNICAST;
 988 }
 989
 990 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 991 {
 992         int rc;
 993
 994         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 995
 996         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 997                 dev_info(&card->gdev->dev,
 998                         "set adapter parameters not supported.\n");
 999                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1000                 return 0;
1001         }
1002         rc = qeth_query_setadapterparms(card);
1003         if (rc) {
1004                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1005                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1006                 return rc;
1007         }
1008         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1009                 rc = qeth_setadpparms_change_macaddr(card);
1010                 if (rc)
1011                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1012                                 " address failed\n");
1013         }
1014
1015         return rc;
1016 }
1017
1018 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1019                         struct qeth_reply *reply, unsigned long data)
1020 {
1021         struct qeth_ipa_cmd *cmd;
1022
1023         QETH_CARD_TEXT(card, 4, "defadpcb");
1024
1025         cmd = (struct qeth_ipa_cmd *) data;
1026         if (cmd->hdr.return_code == 0) {
1027                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1028                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1029                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1030                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1031                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1032         }
1033         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1034             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1035                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1036                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1037         }
1038         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1039             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1040                 card->info.tx_csum_mask =
1041                         cmd->data.setassparms.data.flags_32bit;
1042                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1043         }
1044
1045         return 0;
1046 }
1047
1048 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1049         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1050         __u16 len, enum qeth_prot_versions prot)
1051 {
1052         struct qeth_cmd_buffer *iob;
1053         struct qeth_ipa_cmd *cmd;
1054
1055         QETH_CARD_TEXT(card, 4, "getasscm");
1056         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1057
1058         if (iob) {
1059                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1060                 cmd->data.setassparms.hdr.assist_no = ipa_func;
1061                 cmd->data.setassparms.hdr.length = 8 + len;
1062                 cmd->data.setassparms.hdr.command_code = cmd_code;
1063                 cmd->data.setassparms.hdr.return_code = 0;
1064                 cmd->data.setassparms.hdr.seq_no = 0;
1065         }
1066
1067         return iob;
1068 }
1069
1070 static int qeth_l3_send_setassparms(struct qeth_card *card,
1071         struct qeth_cmd_buffer *iob, __u16 len, long data,
1072         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1073                 unsigned long),
1074         void *reply_param)
1075 {
1076         int rc;
1077         struct qeth_ipa_cmd *cmd;
1078
1079         QETH_CARD_TEXT(card, 4, "sendassp");
1080
1081         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1082         if (len <= sizeof(__u32))
1083                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1084         else   /* (len > sizeof(__u32)) */
1085                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1086
1087         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1088         return rc;
1089 }
1090
1091 #ifdef CONFIG_QETH_IPV6
1092 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1093                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1094 {
1095         int rc;
1096         struct qeth_cmd_buffer *iob;
1097
1098         QETH_CARD_TEXT(card, 4, "simassp6");
1099         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1100                                        0, QETH_PROT_IPV6);
1101         if (!iob)
1102                 return -ENOMEM;
1103         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1104                                    qeth_l3_default_setassparms_cb, NULL);
1105         return rc;
1106 }
1107 #endif
1108
1109 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1110                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1111 {
1112         int rc;
1113         int length = 0;
1114         struct qeth_cmd_buffer *iob;
1115
1116         QETH_CARD_TEXT(card, 4, "simassp4");
1117         if (data)
1118                 length = sizeof(__u32);
1119         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1120                                        length, QETH_PROT_IPV4);
1121         if (!iob)
1122                 return -ENOMEM;
1123         rc = qeth_l3_send_setassparms(card, iob, length, data,
1124                                    qeth_l3_default_setassparms_cb, NULL);
1125         return rc;
1126 }
1127
1128 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1129 {
1130         int rc;
1131
1132         QETH_CARD_TEXT(card, 3, "ipaarp");
1133
1134         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1135                 dev_info(&card->gdev->dev,
1136                         "ARP processing not supported on %s!\n",
1137                         QETH_CARD_IFNAME(card));
1138                 return 0;
1139         }
1140         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1141                                         IPA_CMD_ASS_START, 0);
1142         if (rc) {
1143                 dev_warn(&card->gdev->dev,
1144                         "Starting ARP processing support for %s failed\n",
1145                         QETH_CARD_IFNAME(card));
1146         }
1147         return rc;
1148 }
1149
1150 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1151 {
1152         int rc;
1153
1154         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1155
1156         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1157                 dev_info(&card->gdev->dev,
1158                         "Hardware IP fragmentation not supported on %s\n",
1159                         QETH_CARD_IFNAME(card));
1160                 return  -EOPNOTSUPP;
1161         }
1162
1163         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1164                                           IPA_CMD_ASS_START, 0);
1165         if (rc) {
1166                 dev_warn(&card->gdev->dev,
1167                         "Starting IP fragmentation support for %s failed\n",
1168                         QETH_CARD_IFNAME(card));
1169         } else
1170                 dev_info(&card->gdev->dev,
1171                         "Hardware IP fragmentation enabled \n");
1172         return rc;
1173 }
1174
1175 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1176 {
1177         int rc;
1178
1179         QETH_CARD_TEXT(card, 3, "stsrcmac");
1180
1181         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1182                 dev_info(&card->gdev->dev,
1183                         "Inbound source MAC-address not supported on %s\n",
1184                         QETH_CARD_IFNAME(card));
1185                 return -EOPNOTSUPP;
1186         }
1187
1188         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1189                                           IPA_CMD_ASS_START, 0);
1190         if (rc)
1191                 dev_warn(&card->gdev->dev,
1192                         "Starting source MAC-address support for %s failed\n",
1193                         QETH_CARD_IFNAME(card));
1194         return rc;
1195 }
1196
1197 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1198 {
1199         int rc = 0;
1200
1201         QETH_CARD_TEXT(card, 3, "strtvlan");
1202
1203         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1204                 dev_info(&card->gdev->dev,
1205                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1206                 return -EOPNOTSUPP;
1207         }
1208
1209         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1210                                           IPA_CMD_ASS_START, 0);
1211         if (rc) {
1212                 dev_warn(&card->gdev->dev,
1213                         "Starting VLAN support for %s failed\n",
1214                         QETH_CARD_IFNAME(card));
1215         } else {
1216                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1217         }
1218         return rc;
1219 }
1220
1221 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1222 {
1223         int rc;
1224
1225         QETH_CARD_TEXT(card, 3, "stmcast");
1226
1227         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1228                 dev_info(&card->gdev->dev,
1229                         "Multicast not supported on %s\n",
1230                         QETH_CARD_IFNAME(card));
1231                 return -EOPNOTSUPP;
1232         }
1233
1234         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1235                                           IPA_CMD_ASS_START, 0);
1236         if (rc) {
1237                 dev_warn(&card->gdev->dev,
1238                         "Starting multicast support for %s failed\n",
1239                         QETH_CARD_IFNAME(card));
1240         } else {
1241                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1242                 card->dev->flags |= IFF_MULTICAST;
1243         }
1244         return rc;
1245 }
1246
1247 #ifdef CONFIG_QETH_IPV6
1248 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1249 {
1250         int rc;
1251
1252         QETH_CARD_TEXT(card, 3, "softipv6");
1253
1254         if (card->info.type == QETH_CARD_TYPE_IQD)
1255                 goto out;
1256
1257         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1258         if (rc) {
1259                 dev_err(&card->gdev->dev,
1260                         "Activating IPv6 support for %s failed\n",
1261                         QETH_CARD_IFNAME(card));
1262                 return rc;
1263         }
1264         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1265                                           IPA_CMD_ASS_START, 3);
1266         if (rc) {
1267                 dev_err(&card->gdev->dev,
1268                         "Activating IPv6 support for %s failed\n",
1269                         QETH_CARD_IFNAME(card));
1270                 return rc;
1271         }
1272         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1273                                                IPA_CMD_ASS_START);
1274         if (rc) {
1275                 dev_err(&card->gdev->dev,
1276                         "Activating IPv6 support for %s failed\n",
1277                          QETH_CARD_IFNAME(card));
1278                 return rc;
1279         }
1280         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1281                                                IPA_CMD_ASS_START);
1282         if (rc) {
1283                 dev_warn(&card->gdev->dev,
1284                         "Enabling the passthrough mode for %s failed\n",
1285                         QETH_CARD_IFNAME(card));
1286                 return rc;
1287         }
1288 out:
1289         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1290         return 0;
1291 }
1292 #endif
1293
1294 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1295 {
1296         int rc = 0;
1297
1298         QETH_CARD_TEXT(card, 3, "strtipv6");
1299
1300         if (!qeth_is_supported(card, IPA_IPV6)) {
1301                 dev_info(&card->gdev->dev,
1302                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1303                 return 0;
1304         }
1305 #ifdef CONFIG_QETH_IPV6
1306         rc = qeth_l3_softsetup_ipv6(card);
1307 #endif
1308         return rc ;
1309 }
1310
1311 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1312 {
1313         int rc;
1314
1315         QETH_CARD_TEXT(card, 3, "stbrdcst");
1316         card->info.broadcast_capable = 0;
1317         if (!qeth_is_supported(card, IPA_FILTERING)) {
1318                 dev_info(&card->gdev->dev,
1319                         "Broadcast not supported on %s\n",
1320                         QETH_CARD_IFNAME(card));
1321                 rc = -EOPNOTSUPP;
1322                 goto out;
1323         }
1324         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1325                                           IPA_CMD_ASS_START, 0);
1326         if (rc) {
1327                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1328                         "%s failed\n", QETH_CARD_IFNAME(card));
1329                 goto out;
1330         }
1331
1332         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1333                                           IPA_CMD_ASS_CONFIGURE, 1);
1334         if (rc) {
1335                 dev_warn(&card->gdev->dev,
1336                         "Setting up broadcast filtering for %s failed\n",
1337                         QETH_CARD_IFNAME(card));
1338                 goto out;
1339         }
1340         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1341         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1342         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1343                                           IPA_CMD_ASS_ENABLE, 1);
1344         if (rc) {
1345                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1346                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1347                 goto out;
1348         }
1349         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1350 out:
1351         if (card->info.broadcast_capable)
1352                 card->dev->flags |= IFF_BROADCAST;
1353         else
1354                 card->dev->flags &= ~IFF_BROADCAST;
1355         return rc;
1356 }
1357
1358 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1359 {
1360         int rc;
1361
1362         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1363                                           IPA_CMD_ASS_START, 0);
1364         if (rc) {
1365                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1366                         "failed, using SW checksumming\n",
1367                         QETH_CARD_IFNAME(card));
1368                 return rc;
1369         }
1370         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1371                                           IPA_CMD_ASS_ENABLE,
1372                                           card->info.csum_mask);
1373         if (rc) {
1374                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1375                         "failed, using SW checksumming\n",
1376                         QETH_CARD_IFNAME(card));
1377                 return rc;
1378         }
1379         return 0;
1380 }
1381
1382 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1383 {
1384         int rc = 0;
1385
1386         if (on) {
1387                 rc = qeth_l3_send_checksum_command(card);
1388                 if (rc)
1389                         return -EIO;
1390                 dev_info(&card->gdev->dev,
1391                         "HW Checksumming (inbound) enabled\n");
1392         } else {
1393                 rc = qeth_l3_send_simple_setassparms(card,
1394                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1395                 if (rc)
1396                         return -EIO;
1397         }
1398
1399         return 0;
1400 }
1401
1402 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1403 {
1404         QETH_CARD_TEXT(card, 3, "strtcsum");
1405
1406         if (card->dev->features & NETIF_F_RXCSUM) {
1407                 rtnl_lock();
1408                 /* force set_features call */
1409                 card->dev->features &= ~NETIF_F_RXCSUM;
1410                 netdev_update_features(card->dev);
1411                 rtnl_unlock();
1412         }
1413         return 0;
1414 }
1415
1416 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1417 {
1418         int rc = 0;
1419
1420         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1421                 return rc;
1422         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1423                           IPA_CMD_ASS_START, 0);
1424         if (rc)
1425                 goto err_out;
1426         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1427                           IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1428         if (rc)
1429                 goto err_out;
1430         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1431         return rc;
1432 err_out:
1433         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1434                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1435         return rc;
1436 }
1437
1438 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1439 {
1440         int rc;
1441
1442         QETH_CARD_TEXT(card, 3, "sttso");
1443
1444         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1445                 dev_info(&card->gdev->dev,
1446                         "Outbound TSO not supported on %s\n",
1447                         QETH_CARD_IFNAME(card));
1448                 rc = -EOPNOTSUPP;
1449         } else {
1450                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1451                                                 IPA_CMD_ASS_START, 0);
1452                 if (rc)
1453                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1454                                 "segmentation offload for %s failed\n",
1455                                 QETH_CARD_IFNAME(card));
1456                 else
1457                         dev_info(&card->gdev->dev,
1458                                 "Outbound TSO enabled\n");
1459         }
1460         if (rc)
1461                 card->dev->features &= ~NETIF_F_TSO;
1462         return rc;
1463 }
1464
1465 static int qeth_l3_start_ipassists(struct qeth_card *card)
1466 {
1467         QETH_CARD_TEXT(card, 3, "strtipas");
1468
1469         if (qeth_set_access_ctrl_online(card, 0))
1470                 return -EIO;
1471         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1472         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1473         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1474         qeth_l3_start_ipa_vlan(card);           /* go on*/
1475         qeth_l3_start_ipa_multicast(card);              /* go on*/
1476         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1477         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1478         qeth_l3_start_ipa_checksum(card);               /* go on*/
1479         qeth_l3_start_ipa_tx_checksum(card);
1480         qeth_l3_start_ipa_tso(card);            /* go on*/
1481         return 0;
1482 }
1483
1484 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1485                 struct qeth_reply *reply, unsigned long data)
1486 {
1487         struct qeth_ipa_cmd *cmd;
1488
1489         cmd = (struct qeth_ipa_cmd *) data;
1490         if (cmd->hdr.return_code == 0)
1491                 memcpy(card->dev->dev_addr,
1492                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1493         else
1494                 eth_random_addr(card->dev->dev_addr);
1495
1496         return 0;
1497 }
1498
1499 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1500 {
1501         int rc = 0;
1502         struct qeth_cmd_buffer *iob;
1503         struct qeth_ipa_cmd *cmd;
1504
1505         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1506
1507         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1508                                      QETH_PROT_IPV6);
1509         if (!iob)
1510                 return -ENOMEM;
1511         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1512         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1513                         card->info.unique_id;
1514
1515         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1516                                 NULL);
1517         return rc;
1518 }
1519
1520 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1521                 struct qeth_reply *reply, unsigned long data)
1522 {
1523         struct qeth_ipa_cmd *cmd;
1524
1525         cmd = (struct qeth_ipa_cmd *) data;
1526         if (cmd->hdr.return_code == 0)
1527                 card->info.unique_id = *((__u16 *)
1528                                 &cmd->data.create_destroy_addr.unique_id[6]);
1529         else {
1530                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1531                                         UNIQUE_ID_NOT_BY_CARD;
1532                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1533                         "generate a unique ID\n");
1534         }
1535         return 0;
1536 }
1537
1538 static int qeth_l3_get_unique_id(struct qeth_card *card)
1539 {
1540         int rc = 0;
1541         struct qeth_cmd_buffer *iob;
1542         struct qeth_ipa_cmd *cmd;
1543
1544         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1545
1546         if (!qeth_is_supported(card, IPA_IPV6)) {
1547                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1548                                         UNIQUE_ID_NOT_BY_CARD;
1549                 return 0;
1550         }
1551
1552         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1553                                      QETH_PROT_IPV6);
1554         if (!iob)
1555                 return -ENOMEM;
1556         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1557         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1558                         card->info.unique_id;
1559
1560         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1561         return rc;
1562 }
1563
1564 static int
1565 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1566                             unsigned long data)
1567 {
1568         struct qeth_ipa_cmd        *cmd;
1569         __u16 rc;
1570
1571         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1572
1573         cmd = (struct qeth_ipa_cmd *)data;
1574         rc = cmd->hdr.return_code;
1575         if (rc)
1576                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1577         switch (cmd->data.diagass.action) {
1578         case QETH_DIAGS_CMD_TRACE_QUERY:
1579                 break;
1580         case QETH_DIAGS_CMD_TRACE_DISABLE:
1581                 switch (rc) {
1582                 case 0:
1583                 case IPA_RC_INVALID_SUBCMD:
1584                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1585                         dev_info(&card->gdev->dev, "The HiperSockets network "
1586                                 "traffic analyzer is deactivated\n");
1587                         break;
1588                 default:
1589                         break;
1590                 }
1591                 break;
1592         case QETH_DIAGS_CMD_TRACE_ENABLE:
1593                 switch (rc) {
1594                 case 0:
1595                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1596                         dev_info(&card->gdev->dev, "The HiperSockets network "
1597                                 "traffic analyzer is activated\n");
1598                         break;
1599                 case IPA_RC_HARDWARE_AUTH_ERROR:
1600                         dev_warn(&card->gdev->dev, "The device is not "
1601                                 "authorized to run as a HiperSockets network "
1602                                 "traffic analyzer\n");
1603                         break;
1604                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1605                         dev_warn(&card->gdev->dev, "A HiperSockets "
1606                                 "network traffic analyzer is already "
1607                                 "active in the HiperSockets LAN\n");
1608                         break;
1609                 default:
1610                         break;
1611                 }
1612                 break;
1613         default:
1614                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1615                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1616         }
1617
1618         return 0;
1619 }
1620
1621 static int
1622 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1623 {
1624         struct qeth_cmd_buffer *iob;
1625         struct qeth_ipa_cmd    *cmd;
1626
1627         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1628
1629         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1630         if (!iob)
1631                 return -ENOMEM;
1632         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1633         cmd->data.diagass.subcmd_len = 16;
1634         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1635         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1636         cmd->data.diagass.action = diags_cmd;
1637         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1638 }
1639
1640 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1641                                 struct net_device *dev)
1642 {
1643         ip_eth_mc_map(ipm, mac);
1644 }
1645
1646 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1647 {
1648         struct qeth_ipaddr *ipm;
1649         struct ip_mc_list *im4;
1650         char buf[MAX_ADDR_LEN];
1651
1652         QETH_CARD_TEXT(card, 4, "addmc");
1653         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1654              im4 = rcu_dereference(im4->next_rcu)) {
1655                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1656                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1657                 if (!ipm)
1658                         continue;
1659                 ipm->u.a4.addr = im4->multiaddr;
1660                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1661                 ipm->is_multicast = 1;
1662                 if (!qeth_l3_add_ip(card, ipm))
1663                         kfree(ipm);
1664         }
1665 }
1666
1667 /* called with rcu_read_lock */
1668 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1669 {
1670         struct in_device *in_dev;
1671         u16 vid;
1672
1673         QETH_CARD_TEXT(card, 4, "addmcvl");
1674         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1675                 return;
1676
1677         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1678                 struct net_device *netdev;
1679
1680                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1681                                               vid);
1682                 if (netdev == NULL ||
1683                     !(netdev->flags & IFF_UP))
1684                         continue;
1685                 in_dev = __in_dev_get_rcu(netdev);
1686                 if (!in_dev)
1687                         continue;
1688                 qeth_l3_add_mc(card, in_dev);
1689         }
1690 }
1691
1692 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1693 {
1694         struct in_device *in4_dev;
1695
1696         QETH_CARD_TEXT(card, 4, "chkmcv4");
1697         rcu_read_lock();
1698         in4_dev = __in_dev_get_rcu(card->dev);
1699         if (in4_dev == NULL)
1700                 goto unlock;
1701         qeth_l3_add_mc(card, in4_dev);
1702         qeth_l3_add_vlan_mc(card);
1703 unlock:
1704         rcu_read_unlock();
1705 }
1706
1707 #ifdef CONFIG_QETH_IPV6
1708 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1709 {
1710         struct qeth_ipaddr *ipm;
1711         struct ifmcaddr6 *im6;
1712         char buf[MAX_ADDR_LEN];
1713
1714         QETH_CARD_TEXT(card, 4, "addmc6");
1715         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1716                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1717                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1718                 if (!ipm)
1719                         continue;
1720                 ipm->is_multicast = 1;
1721                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1722                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1723                        sizeof(struct in6_addr));
1724                 if (!qeth_l3_add_ip(card, ipm))
1725                         kfree(ipm);
1726         }
1727 }
1728
1729 /* called with rcu_read_lock */
1730 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1731 {
1732         struct inet6_dev *in_dev;
1733         u16 vid;
1734
1735         QETH_CARD_TEXT(card, 4, "admc6vl");
1736         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1737                 return;
1738
1739         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1740                 struct net_device *netdev;
1741
1742                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1743                                               vid);
1744                 if (netdev == NULL ||
1745                     !(netdev->flags & IFF_UP))
1746                         continue;
1747                 in_dev = in6_dev_get(netdev);
1748                 if (!in_dev)
1749                         continue;
1750                 read_lock_bh(&in_dev->lock);
1751                 qeth_l3_add_mc6(card, in_dev);
1752                 read_unlock_bh(&in_dev->lock);
1753                 in6_dev_put(in_dev);
1754         }
1755 }
1756
1757 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1758 {
1759         struct inet6_dev *in6_dev;
1760
1761         QETH_CARD_TEXT(card, 4, "chkmcv6");
1762         if (!qeth_is_supported(card, IPA_IPV6))
1763                 return ;
1764         in6_dev = in6_dev_get(card->dev);
1765         if (in6_dev == NULL)
1766                 return;
1767         rcu_read_lock();
1768         read_lock_bh(&in6_dev->lock);
1769         qeth_l3_add_mc6(card, in6_dev);
1770         qeth_l3_add_vlan_mc6(card);
1771         read_unlock_bh(&in6_dev->lock);
1772         rcu_read_unlock();
1773         in6_dev_put(in6_dev);
1774 }
1775 #endif /* CONFIG_QETH_IPV6 */
1776
1777 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1778                         unsigned short vid)
1779 {
1780         struct in_device *in_dev;
1781         struct in_ifaddr *ifa;
1782         struct qeth_ipaddr *addr;
1783         struct net_device *netdev;
1784
1785         QETH_CARD_TEXT(card, 4, "frvaddr4");
1786
1787         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1788         if (!netdev)
1789                 return;
1790         in_dev = in_dev_get(netdev);
1791         if (!in_dev)
1792                 return;
1793         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1794                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1795                 if (addr) {
1796                         addr->u.a4.addr = ifa->ifa_address;
1797                         addr->u.a4.mask = ifa->ifa_mask;
1798                         addr->type = QETH_IP_TYPE_NORMAL;
1799                         if (!qeth_l3_delete_ip(card, addr))
1800                                 kfree(addr);
1801                 }
1802         }
1803         in_dev_put(in_dev);
1804 }
1805
1806 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1807                         unsigned short vid)
1808 {
1809 #ifdef CONFIG_QETH_IPV6
1810         struct inet6_dev *in6_dev;
1811         struct inet6_ifaddr *ifa;
1812         struct qeth_ipaddr *addr;
1813         struct net_device *netdev;
1814
1815         QETH_CARD_TEXT(card, 4, "frvaddr6");
1816
1817         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1818         if (!netdev)
1819                 return;
1820         in6_dev = in6_dev_get(netdev);
1821         if (!in6_dev)
1822                 return;
1823         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1824                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1825                 if (addr) {
1826                         memcpy(&addr->u.a6.addr, &ifa->addr,
1827                                sizeof(struct in6_addr));
1828                         addr->u.a6.pfxlen = ifa->prefix_len;
1829                         addr->type = QETH_IP_TYPE_NORMAL;
1830                         if (!qeth_l3_delete_ip(card, addr))
1831                                 kfree(addr);
1832                 }
1833         }
1834         in6_dev_put(in6_dev);
1835 #endif /* CONFIG_QETH_IPV6 */
1836 }
1837
1838 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1839                         unsigned short vid)
1840 {
1841         rcu_read_lock();
1842         qeth_l3_free_vlan_addresses4(card, vid);
1843         qeth_l3_free_vlan_addresses6(card, vid);
1844         rcu_read_unlock();
1845 }
1846
1847 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1848                                    __be16 proto, u16 vid)
1849 {
1850         struct qeth_card *card = dev->ml_priv;
1851
1852         set_bit(vid, card->active_vlans);
1853         return 0;
1854 }
1855
1856 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1857                                     __be16 proto, u16 vid)
1858 {
1859         struct qeth_card *card = dev->ml_priv;
1860         unsigned long flags;
1861
1862         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1863         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1864                 QETH_CARD_TEXT(card, 3, "kidREC");
1865                 return 0;
1866         }
1867         spin_lock_irqsave(&card->vlanlock, flags);
1868         /* unregister IP addresses of vlan device */
1869         qeth_l3_free_vlan_addresses(card, vid);
1870         clear_bit(vid, card->active_vlans);
1871         spin_unlock_irqrestore(&card->vlanlock, flags);
1872         qeth_l3_set_multicast_list(card->dev);
1873         return 0;
1874 }
1875
1876 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1877                         struct sk_buff *skb, struct qeth_hdr *hdr,
1878                         unsigned short *vlan_id)
1879 {
1880         __be16 prot;
1881         struct iphdr *ip_hdr;
1882         unsigned char tg_addr[MAX_ADDR_LEN];
1883         int is_vlan = 0;
1884
1885         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1886                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1887                               ETH_P_IP);
1888                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1889                 case QETH_CAST_MULTICAST:
1890                         switch (prot) {
1891 #ifdef CONFIG_QETH_IPV6
1892                         case __constant_htons(ETH_P_IPV6):
1893                                 ndisc_mc_map((struct in6_addr *)
1894                                      skb->data + 24,
1895                                      tg_addr, card->dev, 0);
1896                                 break;
1897 #endif
1898                         case __constant_htons(ETH_P_IP):
1899                                 ip_hdr = (struct iphdr *)skb->data;
1900                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1901                                 break;
1902                         default:
1903                                 memcpy(tg_addr, card->dev->broadcast,
1904                                         card->dev->addr_len);
1905                         }
1906                         card->stats.multicast++;
1907                         skb->pkt_type = PACKET_MULTICAST;
1908                         break;
1909                 case QETH_CAST_BROADCAST:
1910                         memcpy(tg_addr, card->dev->broadcast,
1911                                 card->dev->addr_len);
1912                         card->stats.multicast++;
1913                         skb->pkt_type = PACKET_BROADCAST;
1914                         break;
1915                 case QETH_CAST_UNICAST:
1916                 case QETH_CAST_ANYCAST:
1917                 case QETH_CAST_NOCAST:
1918                 default:
1919                         if (card->options.sniffer)
1920                                 skb->pkt_type = PACKET_OTHERHOST;
1921                         else
1922                                 skb->pkt_type = PACKET_HOST;
1923                         memcpy(tg_addr, card->dev->dev_addr,
1924                                 card->dev->addr_len);
1925                 }
1926                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1927                         card->dev->header_ops->create(skb, card->dev, prot,
1928                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1929                                 card->dev->addr_len);
1930                 else
1931                         card->dev->header_ops->create(skb, card->dev, prot,
1932                                 tg_addr, "FAKELL", card->dev->addr_len);
1933         }
1934
1935         skb->protocol = eth_type_trans(skb, card->dev);
1936
1937         if (hdr->hdr.l3.ext_flags &
1938             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1939                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1940                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1941                 is_vlan = 1;
1942         }
1943
1944         if (card->dev->features & NETIF_F_RXCSUM) {
1945                 if ((hdr->hdr.l3.ext_flags &
1946                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1947                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1948                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1949                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1950                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1951                 else
1952                         skb->ip_summed = CHECKSUM_NONE;
1953         } else
1954                 skb->ip_summed = CHECKSUM_NONE;
1955
1956         return is_vlan;
1957 }
1958
1959 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1960                                 int budget, int *done)
1961 {
1962         int work_done = 0;
1963         struct sk_buff *skb;
1964         struct qeth_hdr *hdr;
1965         __u16 vlan_tag = 0;
1966         int is_vlan;
1967         unsigned int len;
1968         __u16 magic;
1969
1970         *done = 0;
1971         WARN_ON_ONCE(!budget);
1972         while (budget) {
1973                 skb = qeth_core_get_next_skb(card,
1974                         &card->qdio.in_q->bufs[card->rx.b_index],
1975                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1976                 if (!skb) {
1977                         *done = 1;
1978                         break;
1979                 }
1980                 skb->dev = card->dev;
1981                 switch (hdr->hdr.l3.id) {
1982                 case QETH_HEADER_TYPE_LAYER3:
1983                         magic = *(__u16 *)skb->data;
1984                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1985                             (magic == ETH_P_AF_IUCV)) {
1986                                 skb->protocol = ETH_P_AF_IUCV;
1987                                 skb->pkt_type = PACKET_HOST;
1988                                 skb->mac_header = NET_SKB_PAD;
1989                                 skb->dev = card->dev;
1990                                 len = skb->len;
1991                                 card->dev->header_ops->create(skb, card->dev, 0,
1992                                         card->dev->dev_addr, "FAKELL",
1993                                         card->dev->addr_len);
1994                                 netif_receive_skb(skb);
1995                         } else {
1996                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1997                                                       &vlan_tag);
1998                                 len = skb->len;
1999                                 if (is_vlan && !card->options.sniffer)
2000                                         __vlan_hwaccel_put_tag(skb,
2001                                                 htons(ETH_P_8021Q), vlan_tag);
2002                                 napi_gro_receive(&card->napi, skb);
2003                         }
2004                         break;
2005                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2006                         skb->pkt_type = PACKET_HOST;
2007                         skb->protocol = eth_type_trans(skb, skb->dev);
2008                         len = skb->len;
2009                         netif_receive_skb(skb);
2010                         break;
2011                 default:
2012                         dev_kfree_skb_any(skb);
2013                         QETH_CARD_TEXT(card, 3, "inbunkno");
2014                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2015                         continue;
2016                 }
2017                 work_done++;
2018                 budget--;
2019                 card->stats.rx_packets++;
2020                 card->stats.rx_bytes += len;
2021         }
2022         return work_done;
2023 }
2024
2025 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2026 {
2027         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2028         int work_done = 0;
2029         struct qeth_qdio_buffer *buffer;
2030         int done;
2031         int new_budget = budget;
2032
2033         if (card->options.performance_stats) {
2034                 card->perf_stats.inbound_cnt++;
2035                 card->perf_stats.inbound_start_time = qeth_get_micros();
2036         }
2037
2038         while (1) {
2039                 if (!card->rx.b_count) {
2040                         card->rx.qdio_err = 0;
2041                         card->rx.b_count = qdio_get_next_buffers(
2042                                 card->data.ccwdev, 0, &card->rx.b_index,
2043                                 &card->rx.qdio_err);
2044                         if (card->rx.b_count <= 0) {
2045                                 card->rx.b_count = 0;
2046                                 break;
2047                         }
2048                         card->rx.b_element =
2049                                 &card->qdio.in_q->bufs[card->rx.b_index]
2050                                 .buffer->element[0];
2051                         card->rx.e_offset = 0;
2052                 }
2053
2054                 while (card->rx.b_count) {
2055                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2056                         if (!(card->rx.qdio_err &&
2057                             qeth_check_qdio_errors(card, buffer->buffer,
2058                             card->rx.qdio_err, "qinerr")))
2059                                 work_done += qeth_l3_process_inbound_buffer(
2060                                         card, new_budget, &done);
2061                         else
2062                                 done = 1;
2063
2064                         if (done) {
2065                                 if (card->options.performance_stats)
2066                                         card->perf_stats.bufs_rec++;
2067                                 qeth_put_buffer_pool_entry(card,
2068                                         buffer->pool_entry);
2069                                 qeth_queue_input_buffer(card, card->rx.b_index);
2070                                 card->rx.b_count--;
2071                                 if (card->rx.b_count) {
2072                                         card->rx.b_index =
2073                                                 (card->rx.b_index + 1) %
2074                                                 QDIO_MAX_BUFFERS_PER_Q;
2075                                         card->rx.b_element =
2076                                                 &card->qdio.in_q
2077                                                 ->bufs[card->rx.b_index]
2078                                                 .buffer->element[0];
2079                                         card->rx.e_offset = 0;
2080                                 }
2081                         }
2082
2083                         if (work_done >= budget)
2084                                 goto out;
2085                         else
2086                                 new_budget = budget - work_done;
2087                 }
2088         }
2089
2090         napi_complete(napi);
2091         if (qdio_start_irq(card->data.ccwdev, 0))
2092                 napi_schedule(&card->napi);
2093 out:
2094         if (card->options.performance_stats)
2095                 card->perf_stats.inbound_time += qeth_get_micros() -
2096                         card->perf_stats.inbound_start_time;
2097         return work_done;
2098 }
2099
2100 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2101                         struct qeth_card *card)
2102 {
2103         int rc = 0;
2104         u16 vid;
2105
2106         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2107                 struct net_device *netdev;
2108
2109                 rcu_read_lock();
2110                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
2111                                               vid);
2112                 rcu_read_unlock();
2113                 if (netdev == dev) {
2114                         rc = QETH_VLAN_CARD;
2115                         break;
2116                 }
2117         }
2118
2119         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2120                 return 0;
2121
2122         return rc;
2123 }
2124
2125 static int qeth_l3_verify_dev(struct net_device *dev)
2126 {
2127         struct qeth_card *card;
2128         unsigned long flags;
2129         int rc = 0;
2130
2131         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2132         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2133                 if (card->dev == dev) {
2134                         rc = QETH_REAL_CARD;
2135                         break;
2136                 }
2137                 rc = qeth_l3_verify_vlan_dev(dev, card);
2138                 if (rc)
2139                         break;
2140         }
2141         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2142
2143         return rc;
2144 }
2145
2146 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2147 {
2148         struct qeth_card *card = NULL;
2149         int rc;
2150
2151         rc = qeth_l3_verify_dev(dev);
2152         if (rc == QETH_REAL_CARD)
2153                 card = dev->ml_priv;
2154         else if (rc == QETH_VLAN_CARD)
2155                 card = vlan_dev_real_dev(dev)->ml_priv;
2156         if (card && card->options.layer2)
2157                 card = NULL;
2158         if (card)
2159                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2160         return card ;
2161 }
2162
2163 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2164 {
2165         int rc = 0;
2166
2167         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2168         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2169
2170         qeth_set_allowed_threads(card, 0, 1);
2171         if (card->options.sniffer &&
2172             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2173                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2174         if (card->read.state == CH_STATE_UP &&
2175             card->write.state == CH_STATE_UP &&
2176             (card->state == CARD_STATE_UP)) {
2177                 if (recovery_mode)
2178                         qeth_l3_stop(card->dev);
2179                 else {
2180                         rtnl_lock();
2181                         dev_close(card->dev);
2182                         rtnl_unlock();
2183                 }
2184                 card->state = CARD_STATE_SOFTSETUP;
2185         }
2186         if (card->state == CARD_STATE_SOFTSETUP) {
2187                 qeth_l3_clear_ip_list(card, 1);
2188                 qeth_clear_ipacmd_list(card);
2189                 card->state = CARD_STATE_HARDSETUP;
2190         }
2191         if (card->state == CARD_STATE_HARDSETUP) {
2192                 qeth_qdio_clear_card(card, 0);
2193                 qeth_clear_qdio_buffers(card);
2194                 qeth_clear_working_pool_list(card);
2195                 card->state = CARD_STATE_DOWN;
2196         }
2197         if (card->state == CARD_STATE_DOWN) {
2198                 qeth_clear_cmd_buffers(&card->read);
2199                 qeth_clear_cmd_buffers(&card->write);
2200         }
2201         return rc;
2202 }
2203
2204 /*
2205  * test for and Switch promiscuous mode (on or off)
2206  *  either for guestlan or HiperSocket Sniffer
2207  */
2208 static void
2209 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2210 {
2211         struct net_device *dev = card->dev;
2212
2213         if (((dev->flags & IFF_PROMISC) &&
2214              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2215             (!(dev->flags & IFF_PROMISC) &&
2216              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2217                 return;
2218
2219         if (card->info.guestlan) {              /* Guestlan trace */
2220                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2221                         qeth_setadp_promisc_mode(card);
2222         } else if (card->options.sniffer &&     /* HiperSockets trace */
2223                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2224                 if (dev->flags & IFF_PROMISC) {
2225                         QETH_CARD_TEXT(card, 3, "+promisc");
2226                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2227                 } else {
2228                         QETH_CARD_TEXT(card, 3, "-promisc");
2229                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2230                 }
2231         }
2232 }
2233
2234 static void qeth_l3_set_multicast_list(struct net_device *dev)
2235 {
2236         struct qeth_card *card = dev->ml_priv;
2237
2238         QETH_CARD_TEXT(card, 3, "setmulti");
2239         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2240             (card->state != CARD_STATE_UP))
2241                 return;
2242         if (!card->options.sniffer) {
2243                 qeth_l3_delete_mc_addresses(card);
2244                 qeth_l3_add_multicast_ipv4(card);
2245 #ifdef CONFIG_QETH_IPV6
2246                 qeth_l3_add_multicast_ipv6(card);
2247 #endif
2248                 qeth_l3_set_ip_addr_list(card);
2249                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2250                         return;
2251         }
2252         qeth_l3_handle_promisc_mode(card);
2253 }
2254
2255 static const char *qeth_l3_arp_get_error_cause(int *rc)
2256 {
2257         switch (*rc) {
2258         case QETH_IPA_ARP_RC_FAILED:
2259                 *rc = -EIO;
2260                 return "operation failed";
2261         case QETH_IPA_ARP_RC_NOTSUPP:
2262                 *rc = -EOPNOTSUPP;
2263                 return "operation not supported";
2264         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2265                 *rc = -EINVAL;
2266                 return "argument out of range";
2267         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2268                 *rc = -EOPNOTSUPP;
2269                 return "query operation not supported";
2270         case QETH_IPA_ARP_RC_Q_NO_DATA:
2271                 *rc = -ENOENT;
2272                 return "no query data available";
2273         default:
2274                 return "unknown error";
2275         }
2276 }
2277
2278 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2279 {
2280         int tmp;
2281         int rc;
2282
2283         QETH_CARD_TEXT(card, 3, "arpstnoe");
2284
2285         /*
2286          * currently GuestLAN only supports the ARP assist function
2287          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2288          * thus we say EOPNOTSUPP for this ARP function
2289          */
2290         if (card->info.guestlan)
2291                 return -EOPNOTSUPP;
2292         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2293                 return -EOPNOTSUPP;
2294         }
2295         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2296                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2297                                           no_entries);
2298         if (rc) {
2299                 tmp = rc;
2300                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2301                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2302                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2303         }
2304         return rc;
2305 }
2306
2307 static __u32 get_arp_entry_size(struct qeth_card *card,
2308                         struct qeth_arp_query_data *qdata,
2309                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2310 {
2311         __u32 rc;
2312         __u8 is_hsi;
2313
2314         is_hsi = qdata->reply_bits == 5;
2315         if (type->ip == QETHARP_IP_ADDR_V4) {
2316                 QETH_CARD_TEXT(card, 4, "arpev4");
2317                 if (strip_entries) {
2318                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2319                                 sizeof(struct qeth_arp_qi_entry7_short);
2320                 } else {
2321                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2322                                 sizeof(struct qeth_arp_qi_entry7);
2323                 }
2324         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2325                 QETH_CARD_TEXT(card, 4, "arpev6");
2326                 if (strip_entries) {
2327                         rc = is_hsi ?
2328                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2329                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2330                 } else {
2331                         rc = is_hsi ?
2332                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2333                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2334                 }
2335         } else {
2336                 QETH_CARD_TEXT(card, 4, "arpinv");
2337                 rc = 0;
2338         }
2339
2340         return rc;
2341 }
2342
2343 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2344 {
2345         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2346                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2347 }
2348
2349 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2350                 struct qeth_reply *reply, unsigned long data)
2351 {
2352         struct qeth_ipa_cmd *cmd;
2353         struct qeth_arp_query_data *qdata;
2354         struct qeth_arp_query_info *qinfo;
2355         int i;
2356         int e;
2357         int entrybytes_done;
2358         int stripped_bytes;
2359         __u8 do_strip_entries;
2360
2361         QETH_CARD_TEXT(card, 3, "arpquecb");
2362
2363         qinfo = (struct qeth_arp_query_info *) reply->param;
2364         cmd = (struct qeth_ipa_cmd *) data;
2365         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2366         if (cmd->hdr.return_code) {
2367                 QETH_CARD_TEXT(card, 4, "arpcberr");
2368                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2369                 return 0;
2370         }
2371         if (cmd->data.setassparms.hdr.return_code) {
2372                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2373                 QETH_CARD_TEXT(card, 4, "setaperr");
2374                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2375                 return 0;
2376         }
2377         qdata = &cmd->data.setassparms.data.query_arp;
2378         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2379
2380         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2381         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2382         entrybytes_done = 0;
2383         for (e = 0; e < qdata->no_entries; ++e) {
2384                 char *cur_entry;
2385                 __u32 esize;
2386                 struct qeth_arp_entrytype *etype;
2387
2388                 cur_entry = &qdata->data + entrybytes_done;
2389                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2390                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2391                         QETH_CARD_TEXT(card, 4, "pmis");
2392                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2393                         break;
2394                 }
2395                 esize = get_arp_entry_size(card, qdata, etype,
2396                         do_strip_entries);
2397                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2398                 if (!esize)
2399                         break;
2400
2401                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2402                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2403                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2404                         goto out_error;
2405                 }
2406
2407                 memcpy(qinfo->udata + qinfo->udata_offset,
2408                         &qdata->data + entrybytes_done + stripped_bytes,
2409                         esize);
2410                 entrybytes_done += esize + stripped_bytes;
2411                 qinfo->udata_offset += esize;
2412                 ++qinfo->no_entries;
2413         }
2414         /* check if all replies received ... */
2415         if (cmd->data.setassparms.hdr.seq_no <
2416             cmd->data.setassparms.hdr.number_of_replies)
2417                 return 1;
2418         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2419         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2420         /* keep STRIP_ENTRIES flag so the user program can distinguish
2421          * stripped entries from normal ones */
2422         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2423                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2424         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2425         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2426         return 0;
2427 out_error:
2428         i = 0;
2429         memcpy(qinfo->udata, &i, 4);
2430         return 0;
2431 }
2432
2433 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2434                 struct qeth_cmd_buffer *iob, int len,
2435                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2436                         unsigned long),
2437                 void *reply_param)
2438 {
2439         QETH_CARD_TEXT(card, 4, "sendarp");
2440
2441         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2442         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2443                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2444         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2445                                       reply_cb, reply_param);
2446 }
2447
2448 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2449         enum qeth_prot_versions prot,
2450         struct qeth_arp_query_info *qinfo)
2451 {
2452         struct qeth_cmd_buffer *iob;
2453         struct qeth_ipa_cmd *cmd;
2454         int tmp;
2455         int rc;
2456
2457         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2458
2459         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2460                         IPA_CMD_ASS_ARP_QUERY_INFO,
2461                         sizeof(struct qeth_arp_query_data) - sizeof(char),
2462                         prot);
2463         if (!iob)
2464                 return -ENOMEM;
2465         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2466         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2467         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2468         cmd->data.setassparms.data.query_arp.no_entries = 0;
2469         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2470                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2471                            qeth_l3_arp_query_cb, (void *)qinfo);
2472         if (rc) {
2473                 tmp = rc;
2474                 QETH_DBF_MESSAGE(2,
2475                         "Error while querying ARP cache on %s: %s "
2476                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2477                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2478         }
2479
2480         return rc;
2481 }
2482
2483 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2484 {
2485         struct qeth_arp_query_info qinfo = {0, };
2486         int rc;
2487
2488         QETH_CARD_TEXT(card, 3, "arpquery");
2489
2490         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2491                                IPA_ARP_PROCESSING)) {
2492                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2493                 rc = -EOPNOTSUPP;
2494                 goto out;
2495         }
2496         /* get size of userspace buffer and mask_bits -> 6 bytes */
2497         if (copy_from_user(&qinfo, udata, 6)) {
2498                 rc = -EFAULT;
2499                 goto out;
2500         }
2501         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2502         if (!qinfo.udata) {
2503                 rc = -ENOMEM;
2504                 goto out;
2505         }
2506         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2507         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2508         if (rc) {
2509                 if (copy_to_user(udata, qinfo.udata, 4))
2510                         rc = -EFAULT;
2511                         goto free_and_out;
2512         } else {
2513 #ifdef CONFIG_QETH_IPV6
2514                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2515                         /* fails in case of GuestLAN QDIO mode */
2516                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2517                                 &qinfo);
2518                 }
2519 #endif
2520                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2521                         QETH_CARD_TEXT(card, 4, "qactf");
2522                         rc = -EFAULT;
2523                         goto free_and_out;
2524                 }
2525                 QETH_CARD_TEXT(card, 4, "qacts");
2526         }
2527 free_and_out:
2528         kfree(qinfo.udata);
2529 out:
2530         return rc;
2531 }
2532
2533 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2534                                 struct qeth_arp_cache_entry *entry)
2535 {
2536         struct qeth_cmd_buffer *iob;
2537         char buf[16];
2538         int tmp;
2539         int rc;
2540
2541         QETH_CARD_TEXT(card, 3, "arpadent");
2542
2543         /*
2544          * currently GuestLAN only supports the ARP assist function
2545          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2546          * thus we say EOPNOTSUPP for this ARP function
2547          */
2548         if (card->info.guestlan)
2549                 return -EOPNOTSUPP;
2550         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2551                 return -EOPNOTSUPP;
2552         }
2553
2554         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2555                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2556                                        sizeof(struct qeth_arp_cache_entry),
2557                                        QETH_PROT_IPV4);
2558         if (!iob)
2559                 return -ENOMEM;
2560         rc = qeth_l3_send_setassparms(card, iob,
2561                                    sizeof(struct qeth_arp_cache_entry),
2562                                    (unsigned long) entry,
2563                                    qeth_l3_default_setassparms_cb, NULL);
2564         if (rc) {
2565                 tmp = rc;
2566                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2567                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2568                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2569                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2570         }
2571         return rc;
2572 }
2573
2574 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2575                                 struct qeth_arp_cache_entry *entry)
2576 {
2577         struct qeth_cmd_buffer *iob;
2578         char buf[16] = {0, };
2579         int tmp;
2580         int rc;
2581
2582         QETH_CARD_TEXT(card, 3, "arprment");
2583
2584         /*
2585          * currently GuestLAN only supports the ARP assist function
2586          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2587          * thus we say EOPNOTSUPP for this ARP function
2588          */
2589         if (card->info.guestlan)
2590                 return -EOPNOTSUPP;
2591         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2592                 return -EOPNOTSUPP;
2593         }
2594         memcpy(buf, entry, 12);
2595         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2596                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2597                                        12,
2598                                        QETH_PROT_IPV4);
2599         if (!iob)
2600                 return -ENOMEM;
2601         rc = qeth_l3_send_setassparms(card, iob,
2602                                    12, (unsigned long)buf,
2603                                    qeth_l3_default_setassparms_cb, NULL);
2604         if (rc) {
2605                 tmp = rc;
2606                 memset(buf, 0, 16);
2607                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2608                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2609                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2610                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2611         }
2612         return rc;
2613 }
2614
2615 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2616 {
2617         int rc;
2618         int tmp;
2619
2620         QETH_CARD_TEXT(card, 3, "arpflush");
2621
2622         /*
2623          * currently GuestLAN only supports the ARP assist function
2624          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2625          * thus we say EOPNOTSUPP for this ARP function
2626         */
2627         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2628                 return -EOPNOTSUPP;
2629         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2630                 return -EOPNOTSUPP;
2631         }
2632         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2633                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2634         if (rc) {
2635                 tmp = rc;
2636                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2637                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2638                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2639         }
2640         return rc;
2641 }
2642
2643 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2644 {
2645         struct qeth_card *card = dev->ml_priv;
2646         struct qeth_arp_cache_entry arp_entry;
2647         struct mii_ioctl_data *mii_data;
2648         int rc = 0;
2649
2650         if (!card)
2651                 return -ENODEV;
2652
2653         if ((card->state != CARD_STATE_UP) &&
2654                 (card->state != CARD_STATE_SOFTSETUP))
2655                 return -ENODEV;
2656
2657         switch (cmd) {
2658         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2659                 if (!capable(CAP_NET_ADMIN)) {
2660                         rc = -EPERM;
2661                         break;
2662                 }
2663                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2664                 break;
2665         case SIOC_QETH_ARP_QUERY_INFO:
2666                 if (!capable(CAP_NET_ADMIN)) {
2667                         rc = -EPERM;
2668                         break;
2669                 }
2670                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2671                 break;
2672         case SIOC_QETH_ARP_ADD_ENTRY:
2673                 if (!capable(CAP_NET_ADMIN)) {
2674                         rc = -EPERM;
2675                         break;
2676                 }
2677                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2678                                    sizeof(struct qeth_arp_cache_entry)))
2679                         rc = -EFAULT;
2680                 else
2681                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2682                 break;
2683         case SIOC_QETH_ARP_REMOVE_ENTRY:
2684                 if (!capable(CAP_NET_ADMIN)) {
2685                         rc = -EPERM;
2686                         break;
2687                 }
2688                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2689                                    sizeof(struct qeth_arp_cache_entry)))
2690                         rc = -EFAULT;
2691                 else
2692                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2693                 break;
2694         case SIOC_QETH_ARP_FLUSH_CACHE:
2695                 if (!capable(CAP_NET_ADMIN)) {
2696                         rc = -EPERM;
2697                         break;
2698                 }
2699                 rc = qeth_l3_arp_flush_cache(card);
2700                 break;
2701         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2702                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2703                 break;
2704         case SIOC_QETH_GET_CARD_TYPE:
2705                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2706                      card->info.type == QETH_CARD_TYPE_OSX) &&
2707                     !card->info.guestlan)
2708                         return 1;
2709                 return 0;
2710                 break;
2711         case SIOCGMIIPHY:
2712                 mii_data = if_mii(rq);
2713                 mii_data->phy_id = 0;
2714                 break;
2715         case SIOCGMIIREG:
2716                 mii_data = if_mii(rq);
2717                 if (mii_data->phy_id != 0)
2718                         rc = -EINVAL;
2719                 else
2720                         mii_data->val_out = qeth_mdio_read(dev,
2721                                                         mii_data->phy_id,
2722                                                         mii_data->reg_num);
2723                 break;
2724         case SIOC_QETH_QUERY_OAT:
2725                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2726                 break;
2727         default:
2728                 rc = -EOPNOTSUPP;
2729         }
2730         if (rc)
2731                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2732         return rc;
2733 }
2734
2735 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2736 {
2737         int cast_type = RTN_UNSPEC;
2738         struct neighbour *n = NULL;
2739         struct dst_entry *dst;
2740
2741         rcu_read_lock();
2742         dst = skb_dst(skb);
2743         if (dst)
2744                 n = dst_neigh_lookup_skb(dst, skb);
2745         if (n) {
2746                 cast_type = n->type;
2747                 rcu_read_unlock();
2748                 neigh_release(n);
2749                 if ((cast_type == RTN_BROADCAST) ||
2750                     (cast_type == RTN_MULTICAST) ||
2751                     (cast_type == RTN_ANYCAST))
2752                         return cast_type;
2753                 else
2754                         return RTN_UNSPEC;
2755         }
2756         rcu_read_unlock();
2757
2758         /* try something else */
2759         if (skb->protocol == ETH_P_IPV6)
2760                 return (skb_network_header(skb)[24] == 0xff) ?
2761                                 RTN_MULTICAST : 0;
2762         else if (skb->protocol == ETH_P_IP)
2763                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2764                                 RTN_MULTICAST : 0;
2765         /* ... */
2766         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2767                 return RTN_BROADCAST;
2768         else {
2769                 u16 hdr_mac;
2770
2771                 hdr_mac = *((u16 *)skb->data);
2772                 /* tr multicast? */
2773                 switch (card->info.link_type) {
2774                 case QETH_LINK_TYPE_HSTR:
2775                 case QETH_LINK_TYPE_LANE_TR:
2776                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2777                             (hdr_mac == QETH_TR_MAC_C))
2778                                 return RTN_MULTICAST;
2779                         break;
2780                 /* eth or so multicast? */
2781                 default:
2782                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2783                             (hdr_mac == QETH_ETH_MAC_V6))
2784                                 return RTN_MULTICAST;
2785                 }
2786         }
2787         return cast_type;
2788 }
2789
2790 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2791                 struct qeth_hdr *hdr, struct sk_buff *skb)
2792 {
2793         char daddr[16];
2794         struct af_iucv_trans_hdr *iucv_hdr;
2795
2796         skb_pull(skb, 14);
2797         card->dev->header_ops->create(skb, card->dev, 0,
2798                                       card->dev->dev_addr, card->dev->dev_addr,
2799                                       card->dev->addr_len);
2800         skb_pull(skb, 14);
2801         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2802         memset(hdr, 0, sizeof(struct qeth_hdr));
2803         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2804         hdr->hdr.l3.ext_flags = 0;
2805         hdr->hdr.l3.length = skb->len;
2806         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2807         memset(daddr, 0, sizeof(daddr));
2808         daddr[0] = 0xfe;
2809         daddr[1] = 0x80;
2810         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2811         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2812 }
2813
2814 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2815                 struct sk_buff *skb, int ipv, int cast_type)
2816 {
2817         struct dst_entry *dst;
2818
2819         memset(hdr, 0, sizeof(struct qeth_hdr));
2820         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2821         hdr->hdr.l3.ext_flags = 0;
2822
2823         /*
2824          * before we're going to overwrite this location with next hop ip.
2825          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2826          */
2827         if (vlan_tx_tag_present(skb)) {
2828                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2829                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2830                 else
2831                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2832                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2833         }
2834
2835         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2836
2837         rcu_read_lock();
2838         dst = skb_dst(skb);
2839         if (ipv == 4) {
2840                 struct rtable *rt = (struct rtable *) dst;
2841                 __be32 *pkey = &ip_hdr(skb)->daddr;
2842
2843                 if (rt->rt_gateway)
2844                         pkey = &rt->rt_gateway;
2845
2846                 /* IPv4 */
2847                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2848                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2849                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2850         } else if (ipv == 6) {
2851                 struct rt6_info *rt = (struct rt6_info *) dst;
2852                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2853
2854                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2855                         pkey = &rt->rt6i_gateway;
2856
2857                 /* IPv6 */
2858                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2859                 if (card->info.type == QETH_CARD_TYPE_IQD)
2860                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2861                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2862         } else {
2863                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2864                             skb->dev->broadcast, 6)) {
2865                         /* broadcast? */
2866                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2867                                                 QETH_HDR_PASSTHRU;
2868                 } else {
2869                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2870                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2871                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2872                 }
2873         }
2874         rcu_read_unlock();
2875 }
2876
2877 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2878                 struct qeth_hdr *hdr, struct sk_buff *skb)
2879 {
2880         struct iphdr *iph = ip_hdr(skb);
2881
2882         /* tcph->check contains already the pseudo hdr checksum
2883          * so just set the header flags
2884          */
2885         if (iph->protocol == IPPROTO_UDP)
2886                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2887         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2888                 QETH_HDR_EXT_CSUM_HDR_REQ;
2889         iph->check = 0;
2890         if (card->options.performance_stats)
2891                 card->perf_stats.tx_csum++;
2892 }
2893
2894 static void qeth_tso_fill_header(struct qeth_card *card,
2895                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2896 {
2897         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2898         struct tcphdr *tcph = tcp_hdr(skb);
2899         struct iphdr *iph = ip_hdr(skb);
2900         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2901
2902         /*fix header to TSO values ...*/
2903         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2904         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2905         /*set values which are fix for the first approach ...*/
2906         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2907         hdr->ext.imb_hdr_no  = 1;
2908         hdr->ext.hdr_type    = 1;
2909         hdr->ext.hdr_version = 1;
2910         hdr->ext.hdr_len     = 28;
2911         /*insert non-fix values */
2912         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2913         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2914         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2915                                        sizeof(struct qeth_hdr_tso));
2916         tcph->check = 0;
2917         if (skb->protocol == ETH_P_IPV6) {
2918                 ip6h->payload_len = 0;
2919                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2920                                                0, IPPROTO_TCP, 0);
2921         } else {
2922                 /*OSA want us to set these values ...*/
2923                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2924                                          0, IPPROTO_TCP, 0);
2925                 iph->tot_len = 0;
2926                 iph->check = 0;
2927         }
2928 }
2929
2930 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2931 {
2932         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2933                 tcp_hdr(skb)->doff * 4;
2934         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2935         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2936
2937         elements += qeth_get_elements_for_frags(skb);
2938
2939         return elements;
2940 }
2941
2942 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2943 {
2944         int rc;
2945         u16 *tag;
2946         struct qeth_hdr *hdr = NULL;
2947         int elements_needed = 0;
2948         int elems;
2949         struct qeth_card *card = dev->ml_priv;
2950         struct sk_buff *new_skb = NULL;
2951         int ipv = qeth_get_ip_version(skb);
2952         int cast_type = qeth_l3_get_cast_type(card, skb);
2953         struct qeth_qdio_out_q *queue =
2954                 card->qdio.out_qs[card->qdio.do_prio_queueing
2955                         || (cast_type && card->info.is_multicast_different) ?
2956                         qeth_get_priority_queue(card, skb, ipv, cast_type) :
2957                         card->qdio.default_out_queue];
2958         int tx_bytes = skb->len;
2959         bool large_send;
2960         int data_offset = -1;
2961         int nr_frags;
2962
2963         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2964              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2965               ((card->options.cq == QETH_CQ_ENABLED) &&
2966                (skb->protocol != ETH_P_AF_IUCV)))) ||
2967             card->options.sniffer)
2968                         goto tx_drop;
2969
2970         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2971                 card->stats.tx_carrier_errors++;
2972                 goto tx_drop;
2973         }
2974
2975         if ((cast_type == RTN_BROADCAST) &&
2976             (card->info.broadcast_capable == 0))
2977                 goto tx_drop;
2978
2979         if (card->options.performance_stats) {
2980                 card->perf_stats.outbound_cnt++;
2981                 card->perf_stats.outbound_start_time = qeth_get_micros();
2982         }
2983
2984         large_send = skb_is_gso(skb);
2985
2986         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2987             (skb_shinfo(skb)->nr_frags == 0)) {
2988                 new_skb = skb;
2989                 if (new_skb->protocol == ETH_P_AF_IUCV)
2990                         data_offset = 0;
2991                 else
2992                         data_offset = ETH_HLEN;
2993                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2994                 if (!hdr)
2995                         goto tx_drop;
2996                 elements_needed++;
2997         } else {
2998                 /* create a clone with writeable headroom */
2999                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
3000                                         + VLAN_HLEN);
3001                 if (!new_skb)
3002                         goto tx_drop;
3003         }
3004
3005         if (card->info.type == QETH_CARD_TYPE_IQD) {
3006                 if (data_offset < 0)
3007                         skb_pull(new_skb, ETH_HLEN);
3008         } else {
3009                 if (ipv == 4) {
3010                         skb_pull(new_skb, ETH_HLEN);
3011                 }
3012
3013                 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
3014                         skb_push(new_skb, VLAN_HLEN);
3015                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
3016                         skb_copy_to_linear_data_offset(new_skb, 4,
3017                                 new_skb->data + 8, 4);
3018                         skb_copy_to_linear_data_offset(new_skb, 8,
3019                                 new_skb->data + 12, 4);
3020                         tag = (u16 *)(new_skb->data + 12);
3021                         *tag = __constant_htons(ETH_P_8021Q);
3022                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
3023                 }
3024         }
3025
3026         netif_stop_queue(dev);
3027
3028         /* fix hardware limitation: as long as we do not have sbal
3029          * chaining we can not send long frag lists
3030          */
3031         if (large_send) {
3032                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3033                         if (skb_linearize(new_skb))
3034                                 goto tx_drop;
3035                         if (card->options.performance_stats)
3036                                 card->perf_stats.tx_lin++;
3037                 }
3038         }
3039
3040         if (large_send && (cast_type == RTN_UNSPEC)) {
3041                 hdr = (struct qeth_hdr *)skb_push(new_skb,
3042                                                 sizeof(struct qeth_hdr_tso));
3043                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3044                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3045                 qeth_tso_fill_header(card, hdr, new_skb);
3046                 elements_needed++;
3047         } else {
3048                 if (data_offset < 0) {
3049                         hdr = (struct qeth_hdr *)skb_push(new_skb,
3050                                                 sizeof(struct qeth_hdr));
3051                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3052                                                 cast_type);
3053                 } else {
3054                         if (new_skb->protocol == ETH_P_AF_IUCV)
3055                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3056                         else {
3057                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3058                                                         cast_type);
3059                                 hdr->hdr.l3.length = new_skb->len - data_offset;
3060                         }
3061                 }
3062
3063                 if (skb->ip_summed == CHECKSUM_PARTIAL)
3064                         qeth_l3_hdr_csum(card, hdr, new_skb);
3065         }
3066
3067         elems = qeth_get_elements_no(card, new_skb, elements_needed);
3068         if (!elems) {
3069                 if (data_offset >= 0)
3070                         kmem_cache_free(qeth_core_header_cache, hdr);
3071                 goto tx_drop;
3072         }
3073         elements_needed += elems;
3074         nr_frags = skb_shinfo(new_skb)->nr_frags;
3075
3076         if (card->info.type != QETH_CARD_TYPE_IQD) {
3077                 int len;
3078                 if (large_send)
3079                         len = ((unsigned long)tcp_hdr(new_skb) +
3080                                 tcp_hdr(new_skb)->doff * 4) -
3081                                 (unsigned long)new_skb->data;
3082                 else
3083                         len = sizeof(struct qeth_hdr_layer3);
3084
3085                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
3086                         goto tx_drop;
3087                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3088                                          elements_needed);
3089         } else
3090                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3091                                         elements_needed, data_offset, 0);
3092
3093         if (!rc) {
3094                 card->stats.tx_packets++;
3095                 card->stats.tx_bytes += tx_bytes;
3096                 if (new_skb != skb)
3097                         dev_kfree_skb_any(skb);
3098                 if (card->options.performance_stats) {
3099                         if (large_send) {
3100                                 card->perf_stats.large_send_bytes += tx_bytes;
3101                                 card->perf_stats.large_send_cnt++;
3102                         }
3103                         if (nr_frags) {
3104                                 card->perf_stats.sg_skbs_sent++;
3105                                 /* nr_frags + skb->data */
3106                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3107                         }
3108                 }
3109                 rc = NETDEV_TX_OK;
3110         } else {
3111                 if (data_offset >= 0)
3112                         kmem_cache_free(qeth_core_header_cache, hdr);
3113
3114                 if (rc == -EBUSY) {
3115                         if (new_skb != skb)
3116                                 dev_kfree_skb_any(new_skb);
3117                         return NETDEV_TX_BUSY;
3118                 } else
3119                         goto tx_drop;
3120         }
3121
3122         netif_wake_queue(dev);
3123         if (card->options.performance_stats)
3124                 card->perf_stats.outbound_time += qeth_get_micros() -
3125                         card->perf_stats.outbound_start_time;
3126         return rc;
3127
3128 tx_drop:
3129         card->stats.tx_dropped++;
3130         card->stats.tx_errors++;
3131         if ((new_skb != skb) && new_skb)
3132                 dev_kfree_skb_any(new_skb);
3133         dev_kfree_skb_any(skb);
3134         netif_wake_queue(dev);
3135         return NETDEV_TX_OK;
3136 }
3137
3138 static int __qeth_l3_open(struct net_device *dev)
3139 {
3140         struct qeth_card *card = dev->ml_priv;
3141         int rc = 0;
3142
3143         QETH_CARD_TEXT(card, 4, "qethopen");
3144         if (card->state == CARD_STATE_UP)
3145                 return rc;
3146         if (card->state != CARD_STATE_SOFTSETUP)
3147                 return -ENODEV;
3148         card->data.state = CH_STATE_UP;
3149         card->state = CARD_STATE_UP;
3150         netif_start_queue(dev);
3151
3152         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3153                 napi_enable(&card->napi);
3154                 napi_schedule(&card->napi);
3155         } else
3156                 rc = -EIO;
3157         return rc;
3158 }
3159
3160 static int qeth_l3_open(struct net_device *dev)
3161 {
3162         struct qeth_card *card = dev->ml_priv;
3163
3164         QETH_CARD_TEXT(card, 5, "qethope_");
3165         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3166                 QETH_CARD_TEXT(card, 3, "openREC");
3167                 return -ERESTARTSYS;
3168         }
3169         return __qeth_l3_open(dev);
3170 }
3171
3172 static int qeth_l3_stop(struct net_device *dev)
3173 {
3174         struct qeth_card *card = dev->ml_priv;
3175
3176         QETH_CARD_TEXT(card, 4, "qethstop");
3177         netif_tx_disable(dev);
3178         if (card->state == CARD_STATE_UP) {
3179                 card->state = CARD_STATE_SOFTSETUP;
3180                 napi_disable(&card->napi);
3181         }
3182         return 0;
3183 }
3184
3185 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3186         netdev_features_t features)
3187 {
3188         struct qeth_card *card = dev->ml_priv;
3189
3190         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3191                 features &= ~NETIF_F_IP_CSUM;
3192         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3193                 features &= ~NETIF_F_TSO;
3194         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3195                 features &= ~NETIF_F_RXCSUM;
3196
3197         return features;
3198 }
3199
3200 static int qeth_l3_set_features(struct net_device *dev,
3201         netdev_features_t features)
3202 {
3203         struct qeth_card *card = dev->ml_priv;
3204         u32 changed = dev->features ^ features;
3205         int err;
3206
3207         if (!(changed & NETIF_F_RXCSUM))
3208                 return 0;
3209
3210         if (card->state == CARD_STATE_DOWN ||
3211             card->state == CARD_STATE_RECOVER)
3212                 return 0;
3213
3214         err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3215         if (err)
3216                 dev->features = features ^ NETIF_F_RXCSUM;
3217
3218         return err;
3219 }
3220
3221 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3222         .get_link = ethtool_op_get_link,
3223         .get_strings = qeth_core_get_strings,
3224         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3225         .get_sset_count = qeth_core_get_sset_count,
3226         .get_drvinfo = qeth_core_get_drvinfo,
3227         .get_settings = qeth_core_ethtool_get_settings,
3228 };
3229
3230 /*
3231  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3232  * NOARP on the netdevice is no option because it also turns off neighbor
3233  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3234  * arp resolution but we want the hard header (packet socket will work
3235  * e.g. tcpdump)
3236  */
3237 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3238 {
3239         n->nud_state = NUD_NOARP;
3240         memcpy(n->ha, "FAKELL", 6);
3241         n->output = n->ops->connected_output;
3242         return 0;
3243 }
3244
3245 static int
3246 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3247 {
3248         if (np->tbl->family == AF_INET)
3249                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3250
3251         return 0;
3252 }
3253
3254 static const struct net_device_ops qeth_l3_netdev_ops = {
3255         .ndo_open               = qeth_l3_open,
3256         .ndo_stop               = qeth_l3_stop,
3257         .ndo_get_stats          = qeth_get_stats,
3258         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3259         .ndo_validate_addr      = eth_validate_addr,
3260         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3261         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3262         .ndo_change_mtu         = qeth_change_mtu,
3263         .ndo_fix_features       = qeth_l3_fix_features,
3264         .ndo_set_features       = qeth_l3_set_features,
3265         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3266         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3267         .ndo_tx_timeout         = qeth_tx_timeout,
3268 };
3269
3270 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3271         .ndo_open               = qeth_l3_open,
3272         .ndo_stop               = qeth_l3_stop,
3273         .ndo_get_stats          = qeth_get_stats,
3274         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3275         .ndo_validate_addr      = eth_validate_addr,
3276         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3277         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3278         .ndo_change_mtu         = qeth_change_mtu,
3279         .ndo_fix_features       = qeth_l3_fix_features,
3280         .ndo_set_features       = qeth_l3_set_features,
3281         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3282         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3283         .ndo_tx_timeout         = qeth_tx_timeout,
3284         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3285 };
3286
3287 static int qeth_l3_setup_netdev(struct qeth_card *card)
3288 {
3289         int rc;
3290
3291         if (card->info.type == QETH_CARD_TYPE_OSD ||
3292             card->info.type == QETH_CARD_TYPE_OSX) {
3293                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3294                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3295                         pr_info("qeth_l3: ignoring TR device\n");
3296                         return -ENODEV;
3297                 } else {
3298                         card->dev = alloc_etherdev(0);
3299                         if (!card->dev)
3300                                 return -ENODEV;
3301                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3302
3303                         /*IPv6 address autoconfiguration stuff*/
3304                         qeth_l3_get_unique_id(card);
3305                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3306                                 card->dev->dev_id = card->info.unique_id &
3307                                                          0xffff;
3308                         if (!card->info.guestlan) {
3309                                 card->dev->hw_features = NETIF_F_SG |
3310                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3311                                         NETIF_F_TSO;
3312                                 card->dev->features = NETIF_F_RXCSUM;
3313                         }
3314                 }
3315         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3316                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
3317                                          ether_setup);
3318                 if (!card->dev)
3319                         return -ENODEV;
3320                 card->dev->flags |= IFF_NOARP;
3321                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3322                 rc = qeth_l3_iqd_read_initial_mac(card);
3323                 if (rc)
3324                         return rc;
3325                 if (card->options.hsuid[0])
3326                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3327         } else
3328                 return -ENODEV;
3329
3330         card->dev->ml_priv = card;
3331         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3332         card->dev->mtu = card->info.initial_mtu;
3333         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
3334         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
3335                                 NETIF_F_HW_VLAN_CTAG_RX |
3336                                 NETIF_F_HW_VLAN_CTAG_FILTER;
3337         netif_keep_dst(card->dev);
3338         card->dev->gso_max_size = 15 * PAGE_SIZE;
3339
3340         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3341         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3342         return register_netdev(card->dev);
3343 }
3344
3345 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3346 {
3347         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3348
3349         qeth_l3_create_device_attributes(&gdev->dev);
3350         card->options.layer2 = 0;
3351         card->info.hwtrap = 0;
3352         return 0;
3353 }
3354
3355 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3356 {
3357         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3358
3359         qeth_l3_remove_device_attributes(&cgdev->dev);
3360
3361         qeth_set_allowed_threads(card, 0, 1);
3362         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3363
3364         if (cgdev->state == CCWGROUP_ONLINE)
3365                 qeth_l3_set_offline(cgdev);
3366
3367         if (card->dev) {
3368                 unregister_netdev(card->dev);
3369                 card->dev = NULL;
3370         }
3371
3372         qeth_l3_clear_ip_list(card, 0);
3373         qeth_l3_clear_ipato_list(card);
3374         return;
3375 }
3376
3377 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3378 {
3379         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3380         int rc = 0;
3381         enum qeth_card_states recover_flag;
3382
3383         mutex_lock(&card->discipline_mutex);
3384         mutex_lock(&card->conf_mutex);
3385         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3386         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3387
3388         recover_flag = card->state;
3389         rc = qeth_core_hardsetup_card(card);
3390         if (rc) {
3391                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3392                 rc = -ENODEV;
3393                 goto out_remove;
3394         }
3395
3396         if (!card->dev && qeth_l3_setup_netdev(card)) {
3397                 rc = -ENODEV;
3398                 goto out_remove;
3399         }
3400
3401         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3402                 if (card->info.hwtrap &&
3403                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3404                         card->info.hwtrap = 0;
3405         } else
3406                 card->info.hwtrap = 0;
3407
3408         card->state = CARD_STATE_HARDSETUP;
3409         memset(&card->rx, 0, sizeof(struct qeth_rx));
3410         qeth_print_status_message(card);
3411
3412         /* softsetup */
3413         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3414
3415         rc = qeth_send_startlan(card);
3416         if (rc) {
3417                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3418                 if (rc == 0xe080) {
3419                         dev_warn(&card->gdev->dev,
3420                                 "The LAN is offline\n");
3421                         card->lan_online = 0;
3422                         goto contin;
3423                 }
3424                 rc = -ENODEV;
3425                 goto out_remove;
3426         } else
3427                 card->lan_online = 1;
3428
3429 contin:
3430         rc = qeth_l3_setadapter_parms(card);
3431         if (rc)
3432                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3433         if (!card->options.sniffer) {
3434                 rc = qeth_l3_start_ipassists(card);
3435                 if (rc) {
3436                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3437                         goto out_remove;
3438                 }
3439                 rc = qeth_l3_setrouting_v4(card);
3440                 if (rc)
3441                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3442                 rc = qeth_l3_setrouting_v6(card);
3443                 if (rc)
3444                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3445         }
3446         netif_tx_disable(card->dev);
3447
3448         rc = qeth_init_qdio_queues(card);
3449         if (rc) {
3450                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3451                 rc = -ENODEV;
3452                 goto out_remove;
3453         }
3454         card->state = CARD_STATE_SOFTSETUP;
3455
3456         qeth_set_allowed_threads(card, 0xffffffff, 0);
3457         qeth_l3_set_ip_addr_list(card);
3458         if (card->lan_online)
3459                 netif_carrier_on(card->dev);
3460         else
3461                 netif_carrier_off(card->dev);
3462         if (recover_flag == CARD_STATE_RECOVER) {
3463                 rtnl_lock();
3464                 if (recovery_mode)
3465                         __qeth_l3_open(card->dev);
3466                 else
3467                         dev_open(card->dev);
3468                 qeth_l3_set_multicast_list(card->dev);
3469                 rtnl_unlock();
3470         }
3471         qeth_trace_features(card);
3472         /* let user_space know that device is online */
3473         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3474         mutex_unlock(&card->conf_mutex);
3475         mutex_unlock(&card->discipline_mutex);
3476         return 0;
3477 out_remove:
3478         qeth_l3_stop_card(card, 0);
3479         ccw_device_set_offline(CARD_DDEV(card));
3480         ccw_device_set_offline(CARD_WDEV(card));
3481         ccw_device_set_offline(CARD_RDEV(card));
3482         qdio_free(CARD_DDEV(card));
3483         if (recover_flag == CARD_STATE_RECOVER)
3484                 card->state = CARD_STATE_RECOVER;
3485         else
3486                 card->state = CARD_STATE_DOWN;
3487         mutex_unlock(&card->conf_mutex);
3488         mutex_unlock(&card->discipline_mutex);
3489         return rc;
3490 }
3491
3492 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3493 {
3494         return __qeth_l3_set_online(gdev, 0);
3495 }
3496
3497 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3498                         int recovery_mode)
3499 {
3500         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3501         int rc = 0, rc2 = 0, rc3 = 0;
3502         enum qeth_card_states recover_flag;
3503
3504         mutex_lock(&card->discipline_mutex);
3505         mutex_lock(&card->conf_mutex);
3506         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3507         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3508
3509         if (card->dev && netif_carrier_ok(card->dev))
3510                 netif_carrier_off(card->dev);
3511         recover_flag = card->state;
3512         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3513                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3514                 card->info.hwtrap = 1;
3515         }
3516         qeth_l3_stop_card(card, recovery_mode);
3517         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3518                 rtnl_lock();
3519                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3520                 rtnl_unlock();
3521         }
3522         rc  = ccw_device_set_offline(CARD_DDEV(card));
3523         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3524         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3525         if (!rc)
3526                 rc = (rc2) ? rc2 : rc3;
3527         if (rc)
3528                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3529         qdio_free(CARD_DDEV(card));
3530         if (recover_flag == CARD_STATE_UP)
3531                 card->state = CARD_STATE_RECOVER;
3532         /* let user_space know that device is offline */
3533         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3534         mutex_unlock(&card->conf_mutex);
3535         mutex_unlock(&card->discipline_mutex);
3536         return 0;
3537 }
3538
3539 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3540 {
3541         return __qeth_l3_set_offline(cgdev, 0);
3542 }
3543
3544 static int qeth_l3_recover(void *ptr)
3545 {
3546         struct qeth_card *card;
3547         int rc = 0;
3548
3549         card = (struct qeth_card *) ptr;
3550         QETH_CARD_TEXT(card, 2, "recover1");
3551         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3552         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3553                 return 0;
3554         QETH_CARD_TEXT(card, 2, "recover2");
3555         dev_warn(&card->gdev->dev,
3556                 "A recovery process has been started for the device\n");
3557         qeth_set_recovery_task(card);
3558         __qeth_l3_set_offline(card->gdev, 1);
3559         rc = __qeth_l3_set_online(card->gdev, 1);
3560         if (!rc)
3561                 dev_info(&card->gdev->dev,
3562                         "Device successfully recovered!\n");
3563         else {
3564                 qeth_close_dev(card);
3565                 dev_warn(&card->gdev->dev, "The qeth device driver "
3566                                 "failed to recover an error on the device\n");
3567         }
3568         qeth_clear_recovery_task(card);
3569         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3570         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3571         return 0;
3572 }
3573
3574 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3575 {
3576         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3577         qeth_set_allowed_threads(card, 0, 1);
3578         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3579                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3580         qeth_qdio_clear_card(card, 0);
3581         qeth_clear_qdio_buffers(card);
3582         qdio_free(CARD_DDEV(card));
3583 }
3584
3585 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3586 {
3587         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3588
3589         if (card->dev)
3590                 netif_device_detach(card->dev);
3591         qeth_set_allowed_threads(card, 0, 1);
3592         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3593         if (gdev->state == CCWGROUP_OFFLINE)
3594                 return 0;
3595         if (card->state == CARD_STATE_UP) {
3596                 if (card->info.hwtrap)
3597                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3598                 __qeth_l3_set_offline(card->gdev, 1);
3599         } else
3600                 __qeth_l3_set_offline(card->gdev, 0);
3601         return 0;
3602 }
3603
3604 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3605 {
3606         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3607         int rc = 0;
3608
3609         if (gdev->state == CCWGROUP_OFFLINE)
3610                 goto out;
3611
3612         if (card->state == CARD_STATE_RECOVER) {
3613                 rc = __qeth_l3_set_online(card->gdev, 1);
3614                 if (rc) {
3615                         rtnl_lock();
3616                         dev_close(card->dev);
3617                         rtnl_unlock();
3618                 }
3619         } else
3620                 rc = __qeth_l3_set_online(card->gdev, 0);
3621 out:
3622         qeth_set_allowed_threads(card, 0xffffffff, 0);
3623         if (card->dev)
3624                 netif_device_attach(card->dev);
3625         if (rc)
3626                 dev_warn(&card->gdev->dev, "The qeth device driver "
3627                         "failed to recover an error on the device\n");
3628         return rc;
3629 }
3630
3631 /* Returns zero if the command is successfully "consumed" */
3632 static int qeth_l3_control_event(struct qeth_card *card,
3633                                         struct qeth_ipa_cmd *cmd)
3634 {
3635         return 1;
3636 }
3637
3638 struct qeth_discipline qeth_l3_discipline = {
3639         .start_poll = qeth_qdio_start_poll,
3640         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3641         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3642         .recover = qeth_l3_recover,
3643         .setup = qeth_l3_probe_device,
3644         .remove = qeth_l3_remove_device,
3645         .set_online = qeth_l3_set_online,
3646         .set_offline = qeth_l3_set_offline,
3647         .shutdown = qeth_l3_shutdown,
3648         .freeze = qeth_l3_pm_suspend,
3649         .thaw = qeth_l3_pm_resume,
3650         .restore = qeth_l3_pm_resume,
3651         .control_event_handler = qeth_l3_control_event,
3652 };
3653 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3654
3655 static int qeth_l3_ip_event(struct notifier_block *this,
3656                             unsigned long event, void *ptr)
3657 {
3658         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3659         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3660         struct qeth_ipaddr *addr;
3661         struct qeth_card *card;
3662
3663         if (dev_net(dev) != &init_net)
3664                 return NOTIFY_DONE;
3665
3666         card = qeth_l3_get_card_from_dev(dev);
3667         if (!card)
3668                 return NOTIFY_DONE;
3669         QETH_CARD_TEXT(card, 3, "ipevent");
3670
3671         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3672         if (addr != NULL) {
3673                 addr->u.a4.addr = ifa->ifa_address;
3674                 addr->u.a4.mask = ifa->ifa_mask;
3675                 addr->type = QETH_IP_TYPE_NORMAL;
3676         } else
3677                 goto out;
3678
3679         switch (event) {
3680         case NETDEV_UP:
3681                 if (!qeth_l3_add_ip(card, addr))
3682                         kfree(addr);
3683                 break;
3684         case NETDEV_DOWN:
3685                 if (!qeth_l3_delete_ip(card, addr))
3686                         kfree(addr);
3687                 break;
3688         default:
3689                 break;
3690         }
3691         qeth_l3_set_ip_addr_list(card);
3692 out:
3693         return NOTIFY_DONE;
3694 }
3695
3696 static struct notifier_block qeth_l3_ip_notifier = {
3697         qeth_l3_ip_event,
3698         NULL,
3699 };
3700
3701 #ifdef CONFIG_QETH_IPV6
3702 /**
3703  * IPv6 event handler
3704  */
3705 static int qeth_l3_ip6_event(struct notifier_block *this,
3706                              unsigned long event, void *ptr)
3707 {
3708         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3709         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3710         struct qeth_ipaddr *addr;
3711         struct qeth_card *card;
3712
3713         card = qeth_l3_get_card_from_dev(dev);
3714         if (!card)
3715                 return NOTIFY_DONE;
3716         QETH_CARD_TEXT(card, 3, "ip6event");
3717         if (!qeth_is_supported(card, IPA_IPV6))
3718                 return NOTIFY_DONE;
3719
3720         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3721         if (addr != NULL) {
3722                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3723                 addr->u.a6.pfxlen = ifa->prefix_len;
3724                 addr->type = QETH_IP_TYPE_NORMAL;
3725         } else
3726                 goto out;
3727
3728         switch (event) {
3729         case NETDEV_UP:
3730                 if (!qeth_l3_add_ip(card, addr))
3731                         kfree(addr);
3732                 break;
3733         case NETDEV_DOWN:
3734                 if (!qeth_l3_delete_ip(card, addr))
3735                         kfree(addr);
3736                 break;
3737         default:
3738                 break;
3739         }
3740         qeth_l3_set_ip_addr_list(card);
3741 out:
3742         return NOTIFY_DONE;
3743 }
3744
3745 static struct notifier_block qeth_l3_ip6_notifier = {
3746         qeth_l3_ip6_event,
3747         NULL,
3748 };
3749 #endif
3750
3751 static int qeth_l3_register_notifiers(void)
3752 {
3753         int rc;
3754
3755         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3756         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3757         if (rc)
3758                 return rc;
3759 #ifdef CONFIG_QETH_IPV6
3760         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3761         if (rc) {
3762                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3763                 return rc;
3764         }
3765 #else
3766         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3767 #endif
3768         return 0;
3769 }
3770
3771 static void qeth_l3_unregister_notifiers(void)
3772 {
3773
3774         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3775         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3776 #ifdef CONFIG_QETH_IPV6
3777         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3778 #endif /* QETH_IPV6 */
3779 }
3780
3781 static int __init qeth_l3_init(void)
3782 {
3783         int rc = 0;
3784
3785         pr_info("register layer 3 discipline\n");
3786         rc = qeth_l3_register_notifiers();
3787         return rc;
3788 }
3789
3790 static void __exit qeth_l3_exit(void)
3791 {
3792         qeth_l3_unregister_notifiers();
3793         pr_info("unregister layer 3 discipline\n");
3794 }
3795
3796 module_init(qeth_l3_init);
3797 module_exit(qeth_l3_exit);
3798 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3799 MODULE_DESCRIPTION("qeth layer 3 discipline");
3800 MODULE_LICENSE("GPL");