Pileus Git - ~andy/linux/blob - 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 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 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  64 {
  65         int count = 0, rc = 0;
  66         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 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  82 {
  83         sprintf(buf, "%pI6", addr);
  84 }
  85
  86 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         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 553         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 554         if (addr->proto == QETH_PROT_IPV6)
 555                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 556                        sizeof(struct in6_addr));
 557         else
 558                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 559
 560         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 561
 562         return rc;
 563 }
 564
 565 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 566 {
 567         int i, j;
 568         for (i = 0; i < 16; i++) {
 569                 j = (len) - (i * 8);
 570                 if (j >= 8)
 571                         netmask[i] = 0xff;
 572                 else if (j > 0)
 573                         netmask[i] = (u8)(0xFF00 >> j);
 574                 else
 575                         netmask[i] = 0;
 576         }
 577 }
 578
 579 static int qeth_l3_send_setdelip(struct qeth_card *card,
 580                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 581 {
 582         int rc;
 583         struct qeth_cmd_buffer *iob;
 584         struct qeth_ipa_cmd *cmd;
 585         __u8 netmask[16];
 586
 587         QETH_CARD_TEXT(card, 4, "setdelip");
 588         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 589
 590         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 591         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 592         if (addr->proto == QETH_PROT_IPV6) {
 593                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 594                        sizeof(struct in6_addr));
 595                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 596                 memcpy(cmd->data.setdelip6.mask, netmask,
 597                        sizeof(struct in6_addr));
 598                 cmd->data.setdelip6.flags = flags;
 599         } else {
 600                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 601                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 602                 cmd->data.setdelip4.flags = flags;
 603         }
 604
 605         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 606
 607         return rc;
 608 }
 609
 610 static int qeth_l3_send_setrouting(struct qeth_card *card,
 611         enum qeth_routing_types type, enum qeth_prot_versions prot)
 612 {
 613         int rc;
 614         struct qeth_ipa_cmd *cmd;
 615         struct qeth_cmd_buffer *iob;
 616
 617         QETH_CARD_TEXT(card, 4, "setroutg");
 618         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 619         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 620         cmd->data.setrtg.type = (type);
 621         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 622
 623         return rc;
 624 }
 625
 626 static void qeth_l3_correct_routing_type(struct qeth_card *card,
 627                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 628 {
 629         if (card->info.type == QETH_CARD_TYPE_IQD) {
 630                 switch (*type) {
 631                 case NO_ROUTER:
 632                 case PRIMARY_CONNECTOR:
 633                 case SECONDARY_CONNECTOR:
 634                 case MULTICAST_ROUTER:
 635                         return;
 636                 default:
 637                         goto out_inval;
 638                 }
 639         } else {
 640                 switch (*type) {
 641                 case NO_ROUTER:
 642                 case PRIMARY_ROUTER:
 643                 case SECONDARY_ROUTER:
 644                         return;
 645                 case MULTICAST_ROUTER:
 646                         if (qeth_is_ipafunc_supported(card, prot,
 647                                                       IPA_OSA_MC_ROUTER))
 648                                 return;
 649                 default:
 650                         goto out_inval;
 651                 }
 652         }
 653 out_inval:
 654         *type = NO_ROUTER;
 655 }
 656
 657 int qeth_l3_setrouting_v4(struct qeth_card *card)
 658 {
 659         int rc;
 660
 661         QETH_CARD_TEXT(card, 3, "setrtg4");
 662
 663         qeth_l3_correct_routing_type(card, &card->options.route4.type,
 664                                   QETH_PROT_IPV4);
 665
 666         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 667                                   QETH_PROT_IPV4);
 668         if (rc) {
 669                 card->options.route4.type = NO_ROUTER;
 670                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 671                         " on %s. Type set to 'no router'.\n", rc,
 672                         QETH_CARD_IFNAME(card));
 673         }
 674         return rc;
 675 }
 676
 677 int qeth_l3_setrouting_v6(struct qeth_card *card)
 678 {
 679         int rc = 0;
 680
 681         QETH_CARD_TEXT(card, 3, "setrtg6");
 682 #ifdef CONFIG_QETH_IPV6
 683
 684         if (!qeth_is_supported(card, IPA_IPV6))
 685                 return 0;
 686         qeth_l3_correct_routing_type(card, &card->options.route6.type,
 687                                   QETH_PROT_IPV6);
 688
 689         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 690                                   QETH_PROT_IPV6);
 691         if (rc) {
 692                 card->options.route6.type = NO_ROUTER;
 693                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 694                         " on %s. Type set to 'no router'.\n", rc,
 695                         QETH_CARD_IFNAME(card));
 696         }
 697 #endif
 698         return rc;
 699 }
 700
 701 /*
 702  * IP address takeover related functions
 703  */
 704 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 705 {
 706
 707         struct qeth_ipato_entry *ipatoe, *tmp;
 708         unsigned long flags;
 709
 710         spin_lock_irqsave(&card->ip_lock, flags);
 711         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 712                 list_del(&ipatoe->entry);
 713                 kfree(ipatoe);
 714         }
 715         spin_unlock_irqrestore(&card->ip_lock, flags);
 716 }
 717
 718 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 719                                 struct qeth_ipato_entry *new)
 720 {
 721         struct qeth_ipato_entry *ipatoe;
 722         unsigned long flags;
 723         int rc = 0;
 724
 725         QETH_CARD_TEXT(card, 2, "addipato");
 726         spin_lock_irqsave(&card->ip_lock, flags);
 727         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 728                 if (ipatoe->proto != new->proto)
 729                         continue;
 730                 if (!memcmp(ipatoe->addr, new->addr,
 731                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 732                     (ipatoe->mask_bits == new->mask_bits)) {
 733                         rc = -EEXIST;
 734                         break;
 735                 }
 736         }
 737         if (!rc)
 738                 list_add_tail(&new->entry, &card->ipato.entries);
 739
 740         spin_unlock_irqrestore(&card->ip_lock, flags);
 741         return rc;
 742 }
 743
 744 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 745                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 746 {
 747         struct qeth_ipato_entry *ipatoe, *tmp;
 748         unsigned long flags;
 749
 750         QETH_CARD_TEXT(card, 2, "delipato");
 751         spin_lock_irqsave(&card->ip_lock, flags);
 752         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 753                 if (ipatoe->proto != proto)
 754                         continue;
 755                 if (!memcmp(ipatoe->addr, addr,
 756                             (proto == QETH_PROT_IPV4)? 4:16) &&
 757                     (ipatoe->mask_bits == mask_bits)) {
 758                         list_del(&ipatoe->entry);
 759                         kfree(ipatoe);
 760                 }
 761         }
 762         spin_unlock_irqrestore(&card->ip_lock, flags);
 763 }
 764
 765 /*
 766  * VIPA related functions
 767  */
 768 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 769               const u8 *addr)
 770 {
 771         struct qeth_ipaddr *ipaddr;
 772         unsigned long flags;
 773         int rc = 0;
 774
 775         ipaddr = qeth_l3_get_addr_buffer(proto);
 776         if (ipaddr) {
 777                 if (proto == QETH_PROT_IPV4) {
 778                         QETH_CARD_TEXT(card, 2, "addvipa4");
 779                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 780                         ipaddr->u.a4.mask = 0;
 781                 } else if (proto == QETH_PROT_IPV6) {
 782                         QETH_CARD_TEXT(card, 2, "addvipa6");
 783                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 784                         ipaddr->u.a6.pfxlen = 0;
 785                 }
 786                 ipaddr->type = QETH_IP_TYPE_VIPA;
 787                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 788                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 789         } else
 790                 return -ENOMEM;
 791         spin_lock_irqsave(&card->ip_lock, flags);
 792         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 793             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 794                 rc = -EEXIST;
 795         spin_unlock_irqrestore(&card->ip_lock, flags);
 796         if (rc) {
 797                 return rc;
 798         }
 799         if (!qeth_l3_add_ip(card, ipaddr))
 800                 kfree(ipaddr);
 801         qeth_l3_set_ip_addr_list(card);
 802         return rc;
 803 }
 804
 805 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 806               const u8 *addr)
 807 {
 808         struct qeth_ipaddr *ipaddr;
 809
 810         ipaddr = qeth_l3_get_addr_buffer(proto);
 811         if (ipaddr) {
 812                 if (proto == QETH_PROT_IPV4) {
 813                         QETH_CARD_TEXT(card, 2, "delvipa4");
 814                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 815                         ipaddr->u.a4.mask = 0;
 816                 } else if (proto == QETH_PROT_IPV6) {
 817                         QETH_CARD_TEXT(card, 2, "delvipa6");
 818                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 819                         ipaddr->u.a6.pfxlen = 0;
 820                 }
 821                 ipaddr->type = QETH_IP_TYPE_VIPA;
 822         } else
 823                 return;
 824         if (!qeth_l3_delete_ip(card, ipaddr))
 825                 kfree(ipaddr);
 826         qeth_l3_set_ip_addr_list(card);
 827 }
 828
 829 /*
 830  * proxy ARP related functions
 831  */
 832 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 833               const u8 *addr)
 834 {
 835         struct qeth_ipaddr *ipaddr;
 836         unsigned long flags;
 837         int rc = 0;
 838
 839         ipaddr = qeth_l3_get_addr_buffer(proto);
 840         if (ipaddr) {
 841                 if (proto == QETH_PROT_IPV4) {
 842                         QETH_CARD_TEXT(card, 2, "addrxip4");
 843                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 844                         ipaddr->u.a4.mask = 0;
 845                 } else if (proto == QETH_PROT_IPV6) {
 846                         QETH_CARD_TEXT(card, 2, "addrxip6");
 847                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 848                         ipaddr->u.a6.pfxlen = 0;
 849                 }
 850                 ipaddr->type = QETH_IP_TYPE_RXIP;
 851                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 852                 ipaddr->del_flags = 0;
 853         } else
 854                 return -ENOMEM;
 855         spin_lock_irqsave(&card->ip_lock, flags);
 856         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 857             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 858                 rc = -EEXIST;
 859         spin_unlock_irqrestore(&card->ip_lock, flags);
 860         if (rc) {
 861                 return rc;
 862         }
 863         if (!qeth_l3_add_ip(card, ipaddr))
 864                 kfree(ipaddr);
 865         qeth_l3_set_ip_addr_list(card);
 866         return 0;
 867 }
 868
 869 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 870                         const u8 *addr)
 871 {
 872         struct qeth_ipaddr *ipaddr;
 873
 874         ipaddr = qeth_l3_get_addr_buffer(proto);
 875         if (ipaddr) {
 876                 if (proto == QETH_PROT_IPV4) {
 877                         QETH_CARD_TEXT(card, 2, "addrxip4");
 878                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 879                         ipaddr->u.a4.mask = 0;
 880                 } else if (proto == QETH_PROT_IPV6) {
 881                         QETH_CARD_TEXT(card, 2, "addrxip6");
 882                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 883                         ipaddr->u.a6.pfxlen = 0;
 884                 }
 885                 ipaddr->type = QETH_IP_TYPE_RXIP;
 886         } else
 887                 return;
 888         if (!qeth_l3_delete_ip(card, ipaddr))
 889                 kfree(ipaddr);
 890         qeth_l3_set_ip_addr_list(card);
 891 }
 892
 893 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 894                                 struct qeth_ipaddr *addr)
 895 {
 896         char buf[50];
 897         int rc = 0;
 898         int cnt = 3;
 899
 900         if (addr->proto == QETH_PROT_IPV4) {
 901                 QETH_CARD_TEXT(card, 2, "setaddr4");
 902                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 903         } else if (addr->proto == QETH_PROT_IPV6) {
 904                 QETH_CARD_TEXT(card, 2, "setaddr6");
 905                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 906                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 907         } else {
 908                 QETH_CARD_TEXT(card, 2, "setaddr?");
 909                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 910         }
 911         do {
 912                 if (addr->is_multicast)
 913                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 914                 else
 915                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 916                                         addr->set_flags);
 917                 if (rc)
 918                         QETH_CARD_TEXT(card, 2, "failed");
 919         } while ((--cnt > 0) && rc);
 920         if (rc) {
 921                 QETH_CARD_TEXT(card, 2, "FAILED");
 922                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 923                 dev_warn(&card->gdev->dev,
 924                         "Registering IP address %s failed\n", buf);
 925         }
 926         return rc;
 927 }
 928
 929 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 930                                                 struct qeth_ipaddr *addr)
 931 {
 932         int rc = 0;
 933
 934         if (addr->proto == QETH_PROT_IPV4) {
 935                 QETH_CARD_TEXT(card, 2, "deladdr4");
 936                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 937         } else if (addr->proto == QETH_PROT_IPV6) {
 938                 QETH_CARD_TEXT(card, 2, "deladdr6");
 939                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 940                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 941         } else {
 942                 QETH_CARD_TEXT(card, 2, "deladdr?");
 943                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 944         }
 945         if (addr->is_multicast)
 946                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 947         else
 948                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 949                                         addr->del_flags);
 950         if (rc)
 951                 QETH_CARD_TEXT(card, 2, "failed");
 952
 953         return rc;
 954 }
 955
 956 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 957 {
 958         if (cast_type == RTN_MULTICAST)
 959                 return QETH_CAST_MULTICAST;
 960         if (cast_type == RTN_BROADCAST)
 961                 return QETH_CAST_BROADCAST;
 962         return QETH_CAST_UNICAST;
 963 }
 964
 965 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 966 {
 967         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 968         if (cast_type == RTN_MULTICAST)
 969                 return ct | QETH_CAST_MULTICAST;
 970         if (cast_type == RTN_ANYCAST)
 971                 return ct | QETH_CAST_ANYCAST;
 972         if (cast_type == RTN_BROADCAST)
 973                 return ct | QETH_CAST_BROADCAST;
 974         return ct | QETH_CAST_UNICAST;
 975 }
 976
 977 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 978 {
 979         int rc;
 980
 981         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 982
 983         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 984                 dev_info(&card->gdev->dev,
 985                         "set adapter parameters not supported.\n");
 986                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 987                 return 0;
 988         }
 989         rc = qeth_query_setadapterparms(card);
 990         if (rc) {
 991                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
 992                         "0x%x\n", dev_name(&card->gdev->dev), rc);
 993                 return rc;
 994         }
 995         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 996                 rc = qeth_setadpparms_change_macaddr(card);
 997                 if (rc)
 998                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
 999                                 " address failed\n");
1000         }
1001
1002         return rc;
1003 }
1004
1005 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1006                         struct qeth_reply *reply, unsigned long data)
1007 {
1008         struct qeth_ipa_cmd *cmd;
1009
1010         QETH_CARD_TEXT(card, 4, "defadpcb");
1011
1012         cmd = (struct qeth_ipa_cmd *) data;
1013         if (cmd->hdr.return_code == 0) {
1014                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1015                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1016                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1017                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1018                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1019         }
1020         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1021             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1022                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1023                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1024         }
1025         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1026             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1027                 card->info.tx_csum_mask =
1028                         cmd->data.setassparms.data.flags_32bit;
1029                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1030         }
1031
1032         return 0;
1033 }
1034
1035 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1036         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1037         __u16 len, enum qeth_prot_versions prot)
1038 {
1039         struct qeth_cmd_buffer *iob;
1040         struct qeth_ipa_cmd *cmd;
1041
1042         QETH_CARD_TEXT(card, 4, "getasscm");
1043         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1044
1045         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1046         cmd->data.setassparms.hdr.assist_no = ipa_func;
1047         cmd->data.setassparms.hdr.length = 8 + len;
1048         cmd->data.setassparms.hdr.command_code = cmd_code;
1049         cmd->data.setassparms.hdr.return_code = 0;
1050         cmd->data.setassparms.hdr.seq_no = 0;
1051
1052         return iob;
1053 }
1054
1055 static int qeth_l3_send_setassparms(struct qeth_card *card,
1056         struct qeth_cmd_buffer *iob, __u16 len, long data,
1057         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1058                 unsigned long),
1059         void *reply_param)
1060 {
1061         int rc;
1062         struct qeth_ipa_cmd *cmd;
1063
1064         QETH_CARD_TEXT(card, 4, "sendassp");
1065
1066         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1067         if (len <= sizeof(__u32))
1068                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1069         else   /* (len > sizeof(__u32)) */
1070                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1071
1072         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1073         return rc;
1074 }
1075
1076 #ifdef CONFIG_QETH_IPV6
1077 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1078                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1079 {
1080         int rc;
1081         struct qeth_cmd_buffer *iob;
1082
1083         QETH_CARD_TEXT(card, 4, "simassp6");
1084         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1085                                        0, QETH_PROT_IPV6);
1086         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1087                                    qeth_l3_default_setassparms_cb, NULL);
1088         return rc;
1089 }
1090 #endif
1091
1092 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1093                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1094 {
1095         int rc;
1096         int length = 0;
1097         struct qeth_cmd_buffer *iob;
1098
1099         QETH_CARD_TEXT(card, 4, "simassp4");
1100         if (data)
1101                 length = sizeof(__u32);
1102         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1103                                        length, QETH_PROT_IPV4);
1104         rc = qeth_l3_send_setassparms(card, iob, length, data,
1105                                    qeth_l3_default_setassparms_cb, NULL);
1106         return rc;
1107 }
1108
1109 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1110 {
1111         int rc;
1112
1113         QETH_CARD_TEXT(card, 3, "ipaarp");
1114
1115         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1116                 dev_info(&card->gdev->dev,
1117                         "ARP processing not supported on %s!\n",
1118                         QETH_CARD_IFNAME(card));
1119                 return 0;
1120         }
1121         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1122                                         IPA_CMD_ASS_START, 0);
1123         if (rc) {
1124                 dev_warn(&card->gdev->dev,
1125                         "Starting ARP processing support for %s failed\n",
1126                         QETH_CARD_IFNAME(card));
1127         }
1128         return rc;
1129 }
1130
1131 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1132 {
1133         int rc;
1134
1135         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1136
1137         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1138                 dev_info(&card->gdev->dev,
1139                         "Hardware IP fragmentation not supported on %s\n",
1140                         QETH_CARD_IFNAME(card));
1141                 return  -EOPNOTSUPP;
1142         }
1143
1144         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1145                                           IPA_CMD_ASS_START, 0);
1146         if (rc) {
1147                 dev_warn(&card->gdev->dev,
1148                         "Starting IP fragmentation support for %s failed\n",
1149                         QETH_CARD_IFNAME(card));
1150         } else
1151                 dev_info(&card->gdev->dev,
1152                         "Hardware IP fragmentation enabled \n");
1153         return rc;
1154 }
1155
1156 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1157 {
1158         int rc;
1159
1160         QETH_CARD_TEXT(card, 3, "stsrcmac");
1161
1162         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1163                 dev_info(&card->gdev->dev,
1164                         "Inbound source MAC-address not supported on %s\n",
1165                         QETH_CARD_IFNAME(card));
1166                 return -EOPNOTSUPP;
1167         }
1168
1169         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1170                                           IPA_CMD_ASS_START, 0);
1171         if (rc)
1172                 dev_warn(&card->gdev->dev,
1173                         "Starting source MAC-address support for %s failed\n",
1174                         QETH_CARD_IFNAME(card));
1175         return rc;
1176 }
1177
1178 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1179 {
1180         int rc = 0;
1181
1182         QETH_CARD_TEXT(card, 3, "strtvlan");
1183
1184         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1185                 dev_info(&card->gdev->dev,
1186                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1187                 return -EOPNOTSUPP;
1188         }
1189
1190         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1191                                           IPA_CMD_ASS_START, 0);
1192         if (rc) {
1193                 dev_warn(&card->gdev->dev,
1194                         "Starting VLAN support for %s failed\n",
1195                         QETH_CARD_IFNAME(card));
1196         } else {
1197                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1198         }
1199         return rc;
1200 }
1201
1202 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1203 {
1204         int rc;
1205
1206         QETH_CARD_TEXT(card, 3, "stmcast");
1207
1208         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1209                 dev_info(&card->gdev->dev,
1210                         "Multicast not supported on %s\n",
1211                         QETH_CARD_IFNAME(card));
1212                 return -EOPNOTSUPP;
1213         }
1214
1215         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1216                                           IPA_CMD_ASS_START, 0);
1217         if (rc) {
1218                 dev_warn(&card->gdev->dev,
1219                         "Starting multicast support for %s failed\n",
1220                         QETH_CARD_IFNAME(card));
1221         } else {
1222                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1223                 card->dev->flags |= IFF_MULTICAST;
1224         }
1225         return rc;
1226 }
1227
1228 #ifdef CONFIG_QETH_IPV6
1229 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1230 {
1231         int rc;
1232
1233         QETH_CARD_TEXT(card, 3, "softipv6");
1234
1235         if (card->info.type == QETH_CARD_TYPE_IQD)
1236                 goto out;
1237
1238         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1239         if (rc) {
1240                 dev_err(&card->gdev->dev,
1241                         "Activating IPv6 support for %s failed\n",
1242                         QETH_CARD_IFNAME(card));
1243                 return rc;
1244         }
1245         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1246                                           IPA_CMD_ASS_START, 3);
1247         if (rc) {
1248                 dev_err(&card->gdev->dev,
1249                         "Activating IPv6 support for %s failed\n",
1250                         QETH_CARD_IFNAME(card));
1251                 return rc;
1252         }
1253         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1254                                                IPA_CMD_ASS_START);
1255         if (rc) {
1256                 dev_err(&card->gdev->dev,
1257                         "Activating IPv6 support for %s failed\n",
1258                          QETH_CARD_IFNAME(card));
1259                 return rc;
1260         }
1261         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1262                                                IPA_CMD_ASS_START);
1263         if (rc) {
1264                 dev_warn(&card->gdev->dev,
1265                         "Enabling the passthrough mode for %s failed\n",
1266                         QETH_CARD_IFNAME(card));
1267                 return rc;
1268         }
1269 out:
1270         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1271         return 0;
1272 }
1273 #endif
1274
1275 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1276 {
1277         int rc = 0;
1278
1279         QETH_CARD_TEXT(card, 3, "strtipv6");
1280
1281         if (!qeth_is_supported(card, IPA_IPV6)) {
1282                 dev_info(&card->gdev->dev,
1283                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1284                 return 0;
1285         }
1286 #ifdef CONFIG_QETH_IPV6
1287         rc = qeth_l3_softsetup_ipv6(card);
1288 #endif
1289         return rc ;
1290 }
1291
1292 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1293 {
1294         int rc;
1295
1296         QETH_CARD_TEXT(card, 3, "stbrdcst");
1297         card->info.broadcast_capable = 0;
1298         if (!qeth_is_supported(card, IPA_FILTERING)) {
1299                 dev_info(&card->gdev->dev,
1300                         "Broadcast not supported on %s\n",
1301                         QETH_CARD_IFNAME(card));
1302                 rc = -EOPNOTSUPP;
1303                 goto out;
1304         }
1305         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1306                                           IPA_CMD_ASS_START, 0);
1307         if (rc) {
1308                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1309                         "%s failed\n", QETH_CARD_IFNAME(card));
1310                 goto out;
1311         }
1312
1313         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1314                                           IPA_CMD_ASS_CONFIGURE, 1);
1315         if (rc) {
1316                 dev_warn(&card->gdev->dev,
1317                         "Setting up broadcast filtering for %s failed\n",
1318                         QETH_CARD_IFNAME(card));
1319                 goto out;
1320         }
1321         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1322         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1323         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1324                                           IPA_CMD_ASS_ENABLE, 1);
1325         if (rc) {
1326                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1327                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1328                 goto out;
1329         }
1330         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1331 out:
1332         if (card->info.broadcast_capable)
1333                 card->dev->flags |= IFF_BROADCAST;
1334         else
1335                 card->dev->flags &= ~IFF_BROADCAST;
1336         return rc;
1337 }
1338
1339 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1340 {
1341         int rc;
1342
1343         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1344                                           IPA_CMD_ASS_START, 0);
1345         if (rc) {
1346                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1347                         "failed, using SW checksumming\n",
1348                         QETH_CARD_IFNAME(card));
1349                 return rc;
1350         }
1351         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1352                                           IPA_CMD_ASS_ENABLE,
1353                                           card->info.csum_mask);
1354         if (rc) {
1355                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1356                         "failed, using SW checksumming\n",
1357                         QETH_CARD_IFNAME(card));
1358                 return rc;
1359         }
1360         return 0;
1361 }
1362
1363 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1364 {
1365         int rc = 0;
1366
1367         if (on) {
1368                 rc = qeth_l3_send_checksum_command(card);
1369                 if (rc)
1370                         return -EIO;
1371                 dev_info(&card->gdev->dev,
1372                         "HW Checksumming (inbound) enabled\n");
1373         } else {
1374                 rc = qeth_l3_send_simple_setassparms(card,
1375                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1376                 if (rc)
1377                         return -EIO;
1378         }
1379
1380         return 0;
1381 }
1382
1383 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1384 {
1385         QETH_CARD_TEXT(card, 3, "strtcsum");
1386
1387         if (card->dev->features & NETIF_F_RXCSUM) {
1388                 rtnl_lock();
1389                 /* force set_features call */
1390                 card->dev->features &= ~NETIF_F_RXCSUM;
1391                 netdev_update_features(card->dev);
1392                 rtnl_unlock();
1393         }
1394         return 0;
1395 }
1396
1397 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1398 {
1399         int rc = 0;
1400
1401         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1402                 return rc;
1403         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1404                           IPA_CMD_ASS_START, 0);
1405         if (rc)
1406                 goto err_out;
1407         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1408                           IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1409         if (rc)
1410                 goto err_out;
1411         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1412         return rc;
1413 err_out:
1414         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1415                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1416         return rc;
1417 }
1418
1419 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1420 {
1421         int rc;
1422
1423         QETH_CARD_TEXT(card, 3, "sttso");
1424
1425         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1426                 dev_info(&card->gdev->dev,
1427                         "Outbound TSO not supported on %s\n",
1428                         QETH_CARD_IFNAME(card));
1429                 rc = -EOPNOTSUPP;
1430         } else {
1431                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1432                                                 IPA_CMD_ASS_START, 0);
1433                 if (rc)
1434                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1435                                 "segmentation offload for %s failed\n",
1436                                 QETH_CARD_IFNAME(card));
1437                 else
1438                         dev_info(&card->gdev->dev,
1439                                 "Outbound TSO enabled\n");
1440         }
1441         if (rc)
1442                 card->dev->features &= ~NETIF_F_TSO;
1443         return rc;
1444 }
1445
1446 static int qeth_l3_start_ipassists(struct qeth_card *card)
1447 {
1448         QETH_CARD_TEXT(card, 3, "strtipas");
1449
1450         qeth_set_access_ctrl_online(card);      /* go on*/
1451         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1452         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1453         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1454         qeth_l3_start_ipa_vlan(card);           /* go on*/
1455         qeth_l3_start_ipa_multicast(card);              /* go on*/
1456         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1457         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1458         qeth_l3_start_ipa_checksum(card);               /* go on*/
1459         qeth_l3_start_ipa_tx_checksum(card);
1460         qeth_l3_start_ipa_tso(card);            /* go on*/
1461         return 0;
1462 }
1463
1464 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1465                 struct qeth_reply *reply, unsigned long data)
1466 {
1467         struct qeth_ipa_cmd *cmd;
1468
1469         cmd = (struct qeth_ipa_cmd *) data;
1470         if (cmd->hdr.return_code == 0)
1471                 memcpy(card->dev->dev_addr,
1472                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1473         else
1474                 random_ether_addr(card->dev->dev_addr);
1475
1476         return 0;
1477 }
1478
1479 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1480 {
1481         int rc = 0;
1482         struct qeth_cmd_buffer *iob;
1483         struct qeth_ipa_cmd *cmd;
1484
1485         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1486
1487         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1488                                      QETH_PROT_IPV6);
1489         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1490         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1491                         card->info.unique_id;
1492
1493         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1494                                 NULL);
1495         return rc;
1496 }
1497
1498 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1499                 struct qeth_reply *reply, unsigned long data)
1500 {
1501         struct qeth_ipa_cmd *cmd;
1502
1503         cmd = (struct qeth_ipa_cmd *) data;
1504         if (cmd->hdr.return_code == 0)
1505                 card->info.unique_id = *((__u16 *)
1506                                 &cmd->data.create_destroy_addr.unique_id[6]);
1507         else {
1508                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1509                                         UNIQUE_ID_NOT_BY_CARD;
1510                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1511                         "generate a unique ID\n");
1512         }
1513         return 0;
1514 }
1515
1516 static int qeth_l3_get_unique_id(struct qeth_card *card)
1517 {
1518         int rc = 0;
1519         struct qeth_cmd_buffer *iob;
1520         struct qeth_ipa_cmd *cmd;
1521
1522         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1523
1524         if (!qeth_is_supported(card, IPA_IPV6)) {
1525                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1526                                         UNIQUE_ID_NOT_BY_CARD;
1527                 return 0;
1528         }
1529
1530         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1531                                      QETH_PROT_IPV6);
1532         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1533         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1534                         card->info.unique_id;
1535
1536         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1537         return rc;
1538 }
1539
1540 static int
1541 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1542                             unsigned long data)
1543 {
1544         struct qeth_ipa_cmd        *cmd;
1545         __u16 rc;
1546
1547         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1548
1549         cmd = (struct qeth_ipa_cmd *)data;
1550         rc = cmd->hdr.return_code;
1551         if (rc)
1552                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1553         switch (cmd->data.diagass.action) {
1554         case QETH_DIAGS_CMD_TRACE_QUERY:
1555                 break;
1556         case QETH_DIAGS_CMD_TRACE_DISABLE:
1557                 switch (rc) {
1558                 case 0:
1559                 case IPA_RC_INVALID_SUBCMD:
1560                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1561                         dev_info(&card->gdev->dev, "The HiperSockets network "
1562                                 "traffic analyzer is deactivated\n");
1563                         break;
1564                 default:
1565                         break;
1566                 }
1567                 break;
1568         case QETH_DIAGS_CMD_TRACE_ENABLE:
1569                 switch (rc) {
1570                 case 0:
1571                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1572                         dev_info(&card->gdev->dev, "The HiperSockets network "
1573                                 "traffic analyzer is activated\n");
1574                         break;
1575                 case IPA_RC_HARDWARE_AUTH_ERROR:
1576                         dev_warn(&card->gdev->dev, "The device is not "
1577                                 "authorized to run as a HiperSockets network "
1578                                 "traffic analyzer\n");
1579                         break;
1580                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1581                         dev_warn(&card->gdev->dev, "A HiperSockets "
1582                                 "network traffic analyzer is already "
1583                                 "active in the HiperSockets LAN\n");
1584                         break;
1585                 default:
1586                         break;
1587                 }
1588                 break;
1589         default:
1590                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1591                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1592         }
1593
1594         return 0;
1595 }
1596
1597 static int
1598 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1599 {
1600         struct qeth_cmd_buffer *iob;
1601         struct qeth_ipa_cmd    *cmd;
1602
1603         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1604
1605         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1606         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1607         cmd->data.diagass.subcmd_len = 16;
1608         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1609         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1610         cmd->data.diagass.action = diags_cmd;
1611         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1612 }
1613
1614 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1615                                 struct net_device *dev)
1616 {
1617         ip_eth_mc_map(ipm, mac);
1618 }
1619
1620 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1621 {
1622         struct qeth_ipaddr *ipm;
1623         struct ip_mc_list *im4;
1624         char buf[MAX_ADDR_LEN];
1625
1626         QETH_CARD_TEXT(card, 4, "addmc");
1627         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1628              im4 = rcu_dereference(im4->next_rcu)) {
1629                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1630                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1631                 if (!ipm)
1632                         continue;
1633                 ipm->u.a4.addr = im4->multiaddr;
1634                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1635                 ipm->is_multicast = 1;
1636                 if (!qeth_l3_add_ip(card, ipm))
1637                         kfree(ipm);
1638         }
1639 }
1640
1641 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1642 {
1643         struct in_device *in_dev;
1644         u16 vid;
1645
1646         QETH_CARD_TEXT(card, 4, "addmcvl");
1647         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1648                 return;
1649
1650         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1651                 struct net_device *netdev;
1652
1653                 rcu_read_lock();
1654                 netdev = __vlan_find_dev_deep(card->dev, vid);
1655                 rcu_read_unlock();
1656                 if (netdev == NULL ||
1657                     !(netdev->flags & IFF_UP))
1658                         continue;
1659                 in_dev = in_dev_get(netdev);
1660                 if (!in_dev)
1661                         continue;
1662                 rcu_read_lock();
1663                 qeth_l3_add_mc(card, in_dev);
1664                 rcu_read_unlock();
1665                 in_dev_put(in_dev);
1666         }
1667 }
1668
1669 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1670 {
1671         struct in_device *in4_dev;
1672
1673         QETH_CARD_TEXT(card, 4, "chkmcv4");
1674         in4_dev = in_dev_get(card->dev);
1675         if (in4_dev == NULL)
1676                 return;
1677         rcu_read_lock();
1678         qeth_l3_add_mc(card, in4_dev);
1679         qeth_l3_add_vlan_mc(card);
1680         rcu_read_unlock();
1681         in_dev_put(in4_dev);
1682 }
1683
1684 #ifdef CONFIG_QETH_IPV6
1685 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1686 {
1687         struct qeth_ipaddr *ipm;
1688         struct ifmcaddr6 *im6;
1689         char buf[MAX_ADDR_LEN];
1690
1691         QETH_CARD_TEXT(card, 4, "addmc6");
1692         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1693                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1694                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1695                 if (!ipm)
1696                         continue;
1697                 ipm->is_multicast = 1;
1698                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1699                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1700                        sizeof(struct in6_addr));
1701                 if (!qeth_l3_add_ip(card, ipm))
1702                         kfree(ipm);
1703         }
1704 }
1705
1706 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1707 {
1708         struct inet6_dev *in_dev;
1709         u16 vid;
1710
1711         QETH_CARD_TEXT(card, 4, "admc6vl");
1712         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1713                 return;
1714
1715         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1716                 struct net_device *netdev;
1717
1718                 netdev = __vlan_find_dev_deep(card->dev, vid);
1719                 if (netdev == NULL ||
1720                     !(netdev->flags & IFF_UP))
1721                         continue;
1722                 in_dev = in6_dev_get(netdev);
1723                 if (!in_dev)
1724                         continue;
1725                 read_lock_bh(&in_dev->lock);
1726                 qeth_l3_add_mc6(card, in_dev);
1727                 read_unlock_bh(&in_dev->lock);
1728                 in6_dev_put(in_dev);
1729         }
1730 }
1731
1732 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1733 {
1734         struct inet6_dev *in6_dev;
1735
1736         QETH_CARD_TEXT(card, 4, "chkmcv6");
1737         if (!qeth_is_supported(card, IPA_IPV6))
1738                 return ;
1739         in6_dev = in6_dev_get(card->dev);
1740         if (in6_dev == NULL)
1741                 return;
1742         read_lock_bh(&in6_dev->lock);
1743         qeth_l3_add_mc6(card, in6_dev);
1744         qeth_l3_add_vlan_mc6(card);
1745         read_unlock_bh(&in6_dev->lock);
1746         in6_dev_put(in6_dev);
1747 }
1748 #endif /* CONFIG_QETH_IPV6 */
1749
1750 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1751                         unsigned short vid)
1752 {
1753         struct in_device *in_dev;
1754         struct in_ifaddr *ifa;
1755         struct qeth_ipaddr *addr;
1756         struct net_device *netdev;
1757
1758         QETH_CARD_TEXT(card, 4, "frvaddr4");
1759
1760         netdev = __vlan_find_dev_deep(card->dev, vid);
1761         in_dev = in_dev_get(netdev);
1762         if (!in_dev)
1763                 return;
1764         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1765                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1766                 if (addr) {
1767                         addr->u.a4.addr = ifa->ifa_address;
1768                         addr->u.a4.mask = ifa->ifa_mask;
1769                         addr->type = QETH_IP_TYPE_NORMAL;
1770                         if (!qeth_l3_delete_ip(card, addr))
1771                                 kfree(addr);
1772                 }
1773         }
1774         in_dev_put(in_dev);
1775 }
1776
1777 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1778                         unsigned short vid)
1779 {
1780 #ifdef CONFIG_QETH_IPV6
1781         struct inet6_dev *in6_dev;
1782         struct inet6_ifaddr *ifa;
1783         struct qeth_ipaddr *addr;
1784         struct net_device *netdev;
1785
1786         QETH_CARD_TEXT(card, 4, "frvaddr6");
1787
1788         netdev = __vlan_find_dev_deep(card->dev, vid);
1789         in6_dev = in6_dev_get(netdev);
1790         if (!in6_dev)
1791                 return;
1792         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1793                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1794                 if (addr) {
1795                         memcpy(&addr->u.a6.addr, &ifa->addr,
1796                                sizeof(struct in6_addr));
1797                         addr->u.a6.pfxlen = ifa->prefix_len;
1798                         addr->type = QETH_IP_TYPE_NORMAL;
1799                         if (!qeth_l3_delete_ip(card, addr))
1800                                 kfree(addr);
1801                 }
1802         }
1803         in6_dev_put(in6_dev);
1804 #endif /* CONFIG_QETH_IPV6 */
1805 }
1806
1807 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1808                         unsigned short vid)
1809 {
1810         qeth_l3_free_vlan_addresses4(card, vid);
1811         qeth_l3_free_vlan_addresses6(card, vid);
1812 }
1813
1814 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1815 {
1816         struct qeth_card *card = dev->ml_priv;
1817
1818         set_bit(vid, card->active_vlans);
1819         return 0;
1820 }
1821
1822 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1823 {
1824         struct qeth_card *card = dev->ml_priv;
1825         unsigned long flags;
1826
1827         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1828         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1829                 QETH_CARD_TEXT(card, 3, "kidREC");
1830                 return 0;
1831         }
1832         spin_lock_irqsave(&card->vlanlock, flags);
1833         /* unregister IP addresses of vlan device */
1834         qeth_l3_free_vlan_addresses(card, vid);
1835         clear_bit(vid, card->active_vlans);
1836         spin_unlock_irqrestore(&card->vlanlock, flags);
1837         qeth_l3_set_multicast_list(card->dev);
1838         return 0;
1839 }
1840
1841 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1842                         struct sk_buff *skb, struct qeth_hdr *hdr,
1843                         unsigned short *vlan_id)
1844 {
1845         __be16 prot;
1846         struct iphdr *ip_hdr;
1847         unsigned char tg_addr[MAX_ADDR_LEN];
1848         int is_vlan = 0;
1849
1850         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1851                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1852                               ETH_P_IP);
1853                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1854                 case QETH_CAST_MULTICAST:
1855                         switch (prot) {
1856 #ifdef CONFIG_QETH_IPV6
1857                         case __constant_htons(ETH_P_IPV6):
1858                                 ndisc_mc_map((struct in6_addr *)
1859                                      skb->data + 24,
1860                                      tg_addr, card->dev, 0);
1861                                 break;
1862 #endif
1863                         case __constant_htons(ETH_P_IP):
1864                                 ip_hdr = (struct iphdr *)skb->data;
1865                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1866                                 break;
1867                         default:
1868                                 memcpy(tg_addr, card->dev->broadcast,
1869                                         card->dev->addr_len);
1870                         }
1871                         card->stats.multicast++;
1872                         skb->pkt_type = PACKET_MULTICAST;
1873                         break;
1874                 case QETH_CAST_BROADCAST:
1875                         memcpy(tg_addr, card->dev->broadcast,
1876                                 card->dev->addr_len);
1877                         card->stats.multicast++;
1878                         skb->pkt_type = PACKET_BROADCAST;
1879                         break;
1880                 case QETH_CAST_UNICAST:
1881                 case QETH_CAST_ANYCAST:
1882                 case QETH_CAST_NOCAST:
1883                 default:
1884                         if (card->options.sniffer)
1885                                 skb->pkt_type = PACKET_OTHERHOST;
1886                         else
1887                                 skb->pkt_type = PACKET_HOST;
1888                         memcpy(tg_addr, card->dev->dev_addr,
1889                                 card->dev->addr_len);
1890                 }
1891                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1892                         card->dev->header_ops->create(skb, card->dev, prot,
1893                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1894                                 card->dev->addr_len);
1895                 else
1896                         card->dev->header_ops->create(skb, card->dev, prot,
1897                                 tg_addr, "FAKELL", card->dev->addr_len);
1898         }
1899
1900         skb->protocol = eth_type_trans(skb, card->dev);
1901
1902         if (hdr->hdr.l3.ext_flags &
1903             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1904                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1905                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1906                 is_vlan = 1;
1907         }
1908
1909         if (card->dev->features & NETIF_F_RXCSUM) {
1910                 if ((hdr->hdr.l3.ext_flags &
1911                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1912                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1913                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1914                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1915                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1916                 else
1917                         skb->ip_summed = CHECKSUM_NONE;
1918         } else
1919                 skb->ip_summed = CHECKSUM_NONE;
1920
1921         return is_vlan;
1922 }
1923
1924 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1925                                 int budget, int *done)
1926 {
1927         int work_done = 0;
1928         struct sk_buff *skb;
1929         struct qeth_hdr *hdr;
1930         __u16 vlan_tag = 0;
1931         int is_vlan;
1932         unsigned int len;
1933         __u16 magic;
1934
1935         *done = 0;
1936         BUG_ON(!budget);
1937         while (budget) {
1938                 skb = qeth_core_get_next_skb(card,
1939                         &card->qdio.in_q->bufs[card->rx.b_index],
1940                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1941                 if (!skb) {
1942                         *done = 1;
1943                         break;
1944                 }
1945                 skb->dev = card->dev;
1946                 switch (hdr->hdr.l3.id) {
1947                 case QETH_HEADER_TYPE_LAYER3:
1948                         magic = *(__u16 *)skb->data;
1949                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1950                             (magic == ETH_P_AF_IUCV)) {
1951                                 skb->protocol = ETH_P_AF_IUCV;
1952                                 skb->pkt_type = PACKET_HOST;
1953                                 skb->mac_header = NET_SKB_PAD;
1954                                 skb->dev = card->dev;
1955                                 len = skb->len;
1956                                 card->dev->header_ops->create(skb, card->dev, 0,
1957                                         card->dev->dev_addr, "FAKELL",
1958                                         card->dev->addr_len);
1959                                 netif_receive_skb(skb);
1960                         } else {
1961                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1962                                                       &vlan_tag);
1963                                 len = skb->len;
1964                                 if (is_vlan && !card->options.sniffer)
1965                                         __vlan_hwaccel_put_tag(skb, vlan_tag);
1966                                 napi_gro_receive(&card->napi, skb);
1967                         }
1968                         break;
1969                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1970                         skb->pkt_type = PACKET_HOST;
1971                         skb->protocol = eth_type_trans(skb, skb->dev);
1972                         len = skb->len;
1973                         netif_receive_skb(skb);
1974                         break;
1975                 default:
1976                         dev_kfree_skb_any(skb);
1977                         QETH_CARD_TEXT(card, 3, "inbunkno");
1978                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1979                         continue;
1980                 }
1981                 work_done++;
1982                 budget--;
1983                 card->stats.rx_packets++;
1984                 card->stats.rx_bytes += len;
1985         }
1986         return work_done;
1987 }
1988
1989 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1990 {
1991         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1992         int work_done = 0;
1993         struct qeth_qdio_buffer *buffer;
1994         int done;
1995         int new_budget = budget;
1996
1997         if (card->options.performance_stats) {
1998                 card->perf_stats.inbound_cnt++;
1999                 card->perf_stats.inbound_start_time = qeth_get_micros();
2000         }
2001
2002         while (1) {
2003                 if (!card->rx.b_count) {
2004                         card->rx.qdio_err = 0;
2005                         card->rx.b_count = qdio_get_next_buffers(
2006                                 card->data.ccwdev, 0, &card->rx.b_index,
2007                                 &card->rx.qdio_err);
2008                         if (card->rx.b_count <= 0) {
2009                                 card->rx.b_count = 0;
2010                                 break;
2011                         }
2012                         card->rx.b_element =
2013                                 &card->qdio.in_q->bufs[card->rx.b_index]
2014                                 .buffer->element[0];
2015                         card->rx.e_offset = 0;
2016                 }
2017
2018                 while (card->rx.b_count) {
2019                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2020                         if (!(card->rx.qdio_err &&
2021                             qeth_check_qdio_errors(card, buffer->buffer,
2022                             card->rx.qdio_err, "qinerr")))
2023                                 work_done += qeth_l3_process_inbound_buffer(
2024                                         card, new_budget, &done);
2025                         else
2026                                 done = 1;
2027
2028                         if (done) {
2029                                 if (card->options.performance_stats)
2030                                         card->perf_stats.bufs_rec++;
2031                                 qeth_put_buffer_pool_entry(card,
2032                                         buffer->pool_entry);
2033                                 qeth_queue_input_buffer(card, card->rx.b_index);
2034                                 card->rx.b_count--;
2035                                 if (card->rx.b_count) {
2036                                         card->rx.b_index =
2037                                                 (card->rx.b_index + 1) %
2038                                                 QDIO_MAX_BUFFERS_PER_Q;
2039                                         card->rx.b_element =
2040                                                 &card->qdio.in_q
2041                                                 ->bufs[card->rx.b_index]
2042                                                 .buffer->element[0];
2043                                         card->rx.e_offset = 0;
2044                                 }
2045                         }
2046
2047                         if (work_done >= budget)
2048                                 goto out;
2049                         else
2050                                 new_budget = budget - work_done;
2051                 }
2052         }
2053
2054         napi_complete(napi);
2055         if (qdio_start_irq(card->data.ccwdev, 0))
2056                 napi_schedule(&card->napi);
2057 out:
2058         if (card->options.performance_stats)
2059                 card->perf_stats.inbound_time += qeth_get_micros() -
2060                         card->perf_stats.inbound_start_time;
2061         return work_done;
2062 }
2063
2064 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2065                         struct qeth_card *card)
2066 {
2067         int rc = 0;
2068         u16 vid;
2069
2070         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2071                 struct net_device *netdev;
2072
2073                 rcu_read_lock();
2074                 netdev = __vlan_find_dev_deep(card->dev, vid);
2075                 rcu_read_unlock();
2076                 if (netdev == dev) {
2077                         rc = QETH_VLAN_CARD;
2078                         break;
2079                 }
2080         }
2081
2082         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2083                 return 0;
2084
2085         return rc;
2086 }
2087
2088 static int qeth_l3_verify_dev(struct net_device *dev)
2089 {
2090         struct qeth_card *card;
2091         unsigned long flags;
2092         int rc = 0;
2093
2094         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2095         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2096                 if (card->dev == dev) {
2097                         rc = QETH_REAL_CARD;
2098                         break;
2099                 }
2100                 rc = qeth_l3_verify_vlan_dev(dev, card);
2101                 if (rc)
2102                         break;
2103         }
2104         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2105
2106         return rc;
2107 }
2108
2109 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2110 {
2111         struct qeth_card *card = NULL;
2112         int rc;
2113
2114         rc = qeth_l3_verify_dev(dev);
2115         if (rc == QETH_REAL_CARD)
2116                 card = dev->ml_priv;
2117         else if (rc == QETH_VLAN_CARD)
2118                 card = vlan_dev_real_dev(dev)->ml_priv;
2119         if (card && card->options.layer2)
2120                 card = NULL;
2121         if (card)
2122                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2123         return card ;
2124 }
2125
2126 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2127 {
2128         int rc = 0;
2129
2130         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2131         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2132
2133         qeth_set_allowed_threads(card, 0, 1);
2134         if (card->options.sniffer &&
2135             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2136                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2137         if (card->read.state == CH_STATE_UP &&
2138             card->write.state == CH_STATE_UP &&
2139             (card->state == CARD_STATE_UP)) {
2140                 if (recovery_mode)
2141                         qeth_l3_stop(card->dev);
2142                 else {
2143                         rtnl_lock();
2144                         dev_close(card->dev);
2145                         rtnl_unlock();
2146                 }
2147                 card->state = CARD_STATE_SOFTSETUP;
2148         }
2149         if (card->state == CARD_STATE_SOFTSETUP) {
2150                 qeth_l3_clear_ip_list(card, 1);
2151                 qeth_clear_ipacmd_list(card);
2152                 card->state = CARD_STATE_HARDSETUP;
2153         }
2154         if (card->state == CARD_STATE_HARDSETUP) {
2155                 qeth_qdio_clear_card(card, 0);
2156                 qeth_clear_qdio_buffers(card);
2157                 qeth_clear_working_pool_list(card);
2158                 card->state = CARD_STATE_DOWN;
2159         }
2160         if (card->state == CARD_STATE_DOWN) {
2161                 qeth_clear_cmd_buffers(&card->read);
2162                 qeth_clear_cmd_buffers(&card->write);
2163         }
2164         return rc;
2165 }
2166
2167 /*
2168  * test for and Switch promiscuous mode (on or off)
2169  *  either for guestlan or HiperSocket Sniffer
2170  */
2171 static void
2172 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2173 {
2174         struct net_device *dev = card->dev;
2175
2176         if (((dev->flags & IFF_PROMISC) &&
2177              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2178             (!(dev->flags & IFF_PROMISC) &&
2179              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2180                 return;
2181
2182         if (card->info.guestlan) {              /* Guestlan trace */
2183                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2184                         qeth_setadp_promisc_mode(card);
2185         } else if (card->options.sniffer &&     /* HiperSockets trace */
2186                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2187                 if (dev->flags & IFF_PROMISC) {
2188                         QETH_CARD_TEXT(card, 3, "+promisc");
2189                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2190                 } else {
2191                         QETH_CARD_TEXT(card, 3, "-promisc");
2192                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2193                 }
2194         }
2195 }
2196
2197 static void qeth_l3_set_multicast_list(struct net_device *dev)
2198 {
2199         struct qeth_card *card = dev->ml_priv;
2200
2201         QETH_CARD_TEXT(card, 3, "setmulti");
2202         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2203             (card->state != CARD_STATE_UP))
2204                 return;
2205         if (!card->options.sniffer) {
2206                 qeth_l3_delete_mc_addresses(card);
2207                 qeth_l3_add_multicast_ipv4(card);
2208 #ifdef CONFIG_QETH_IPV6
2209                 qeth_l3_add_multicast_ipv6(card);
2210 #endif
2211                 qeth_l3_set_ip_addr_list(card);
2212                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2213                         return;
2214         }
2215         qeth_l3_handle_promisc_mode(card);
2216 }
2217
2218 static const char *qeth_l3_arp_get_error_cause(int *rc)
2219 {
2220         switch (*rc) {
2221         case QETH_IPA_ARP_RC_FAILED:
2222                 *rc = -EIO;
2223                 return "operation failed";
2224         case QETH_IPA_ARP_RC_NOTSUPP:
2225                 *rc = -EOPNOTSUPP;
2226                 return "operation not supported";
2227         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2228                 *rc = -EINVAL;
2229                 return "argument out of range";
2230         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2231                 *rc = -EOPNOTSUPP;
2232                 return "query operation not supported";
2233         case QETH_IPA_ARP_RC_Q_NO_DATA:
2234                 *rc = -ENOENT;
2235                 return "no query data available";
2236         default:
2237                 return "unknown error";
2238         }
2239 }
2240
2241 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2242 {
2243         int tmp;
2244         int rc;
2245
2246         QETH_CARD_TEXT(card, 3, "arpstnoe");
2247
2248         /*
2249          * currently GuestLAN only supports the ARP assist function
2250          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2251          * thus we say EOPNOTSUPP for this ARP function
2252          */
2253         if (card->info.guestlan)
2254                 return -EOPNOTSUPP;
2255         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2256                 return -EOPNOTSUPP;
2257         }
2258         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2259                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2260                                           no_entries);
2261         if (rc) {
2262                 tmp = rc;
2263                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2264                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2265                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2266         }
2267         return rc;
2268 }
2269
2270 static __u32 get_arp_entry_size(struct qeth_card *card,
2271                         struct qeth_arp_query_data *qdata,
2272                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2273 {
2274         __u32 rc;
2275         __u8 is_hsi;
2276
2277         is_hsi = qdata->reply_bits == 5;
2278         if (type->ip == QETHARP_IP_ADDR_V4) {
2279                 QETH_CARD_TEXT(card, 4, "arpev4");
2280                 if (strip_entries) {
2281                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2282                                 sizeof(struct qeth_arp_qi_entry7_short);
2283                 } else {
2284                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2285                                 sizeof(struct qeth_arp_qi_entry7);
2286                 }
2287         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2288                 QETH_CARD_TEXT(card, 4, "arpev6");
2289                 if (strip_entries) {
2290                         rc = is_hsi ?
2291                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2292                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2293                 } else {
2294                         rc = is_hsi ?
2295                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2296                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2297                 }
2298         } else {
2299                 QETH_CARD_TEXT(card, 4, "arpinv");
2300                 rc = 0;
2301         }
2302
2303         return rc;
2304 }
2305
2306 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2307 {
2308         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2309                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2310 }
2311
2312 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2313                 struct qeth_reply *reply, unsigned long data)
2314 {
2315         struct qeth_ipa_cmd *cmd;
2316         struct qeth_arp_query_data *qdata;
2317         struct qeth_arp_query_info *qinfo;
2318         int i;
2319         int e;
2320         int entrybytes_done;
2321         int stripped_bytes;
2322         __u8 do_strip_entries;
2323
2324         QETH_CARD_TEXT(card, 3, "arpquecb");
2325
2326         qinfo = (struct qeth_arp_query_info *) reply->param;
2327         cmd = (struct qeth_ipa_cmd *) data;
2328         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2329         if (cmd->hdr.return_code) {
2330                 QETH_CARD_TEXT(card, 4, "arpcberr");
2331                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2332                 return 0;
2333         }
2334         if (cmd->data.setassparms.hdr.return_code) {
2335                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2336                 QETH_CARD_TEXT(card, 4, "setaperr");
2337                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2338                 return 0;
2339         }
2340         qdata = &cmd->data.setassparms.data.query_arp;
2341         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2342
2343         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2344         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2345         entrybytes_done = 0;
2346         for (e = 0; e < qdata->no_entries; ++e) {
2347                 char *cur_entry;
2348                 __u32 esize;
2349                 struct qeth_arp_entrytype *etype;
2350
2351                 cur_entry = &qdata->data + entrybytes_done;
2352                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2353                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2354                         QETH_CARD_TEXT(card, 4, "pmis");
2355                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2356                         break;
2357                 }
2358                 esize = get_arp_entry_size(card, qdata, etype,
2359                         do_strip_entries);
2360                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2361                 if (!esize)
2362                         break;
2363
2364                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2365                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2366                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2367                         goto out_error;
2368                 }
2369
2370                 memcpy(qinfo->udata + qinfo->udata_offset,
2371                         &qdata->data + entrybytes_done + stripped_bytes,
2372                         esize);
2373                 entrybytes_done += esize + stripped_bytes;
2374                 qinfo->udata_offset += esize;
2375                 ++qinfo->no_entries;
2376         }
2377         /* check if all replies received ... */
2378         if (cmd->data.setassparms.hdr.seq_no <
2379             cmd->data.setassparms.hdr.number_of_replies)
2380                 return 1;
2381         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2382         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2383         /* keep STRIP_ENTRIES flag so the user program can distinguish
2384          * stripped entries from normal ones */
2385         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2386                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2387         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2388         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2389         return 0;
2390 out_error:
2391         i = 0;
2392         memcpy(qinfo->udata, &i, 4);
2393         return 0;
2394 }
2395
2396 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2397                 struct qeth_cmd_buffer *iob, int len,
2398                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2399                         unsigned long),
2400                 void *reply_param)
2401 {
2402         QETH_CARD_TEXT(card, 4, "sendarp");
2403
2404         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2405         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2406                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2407         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2408                                       reply_cb, reply_param);
2409 }
2410
2411 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2412         enum qeth_prot_versions prot,
2413         struct qeth_arp_query_info *qinfo)
2414 {
2415         struct qeth_cmd_buffer *iob;
2416         struct qeth_ipa_cmd *cmd;
2417         int tmp;
2418         int rc;
2419
2420         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2421
2422         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2423                         IPA_CMD_ASS_ARP_QUERY_INFO,
2424                         sizeof(struct qeth_arp_query_data) - sizeof(char),
2425                         prot);
2426         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2427         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2428         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2429         cmd->data.setassparms.data.query_arp.no_entries = 0;
2430         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2431                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2432                            qeth_l3_arp_query_cb, (void *)qinfo);
2433         if (rc) {
2434                 tmp = rc;
2435                 QETH_DBF_MESSAGE(2,
2436                         "Error while querying ARP cache on %s: %s "
2437                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2438                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2439         }
2440
2441         return rc;
2442 }
2443
2444 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2445 {
2446         struct qeth_arp_query_info qinfo = {0, };
2447         int rc;
2448
2449         QETH_CARD_TEXT(card, 3, "arpquery");
2450
2451         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2452                                IPA_ARP_PROCESSING)) {
2453                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2454                 rc = -EOPNOTSUPP;
2455                 goto out;
2456         }
2457         /* get size of userspace buffer and mask_bits -> 6 bytes */
2458         if (copy_from_user(&qinfo, udata, 6)) {
2459                 rc = -EFAULT;
2460                 goto out;
2461         }
2462         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2463         if (!qinfo.udata) {
2464                 rc = -ENOMEM;
2465                 goto out;
2466         }
2467         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2468         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2469         if (rc) {
2470                 if (copy_to_user(udata, qinfo.udata, 4))
2471                         rc = -EFAULT;
2472                         goto free_and_out;
2473         } else {
2474 #ifdef CONFIG_QETH_IPV6
2475                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2476                         /* fails in case of GuestLAN QDIO mode */
2477                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2478                                 &qinfo);
2479                 }
2480 #endif
2481                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2482                         QETH_CARD_TEXT(card, 4, "qactf");
2483                         rc = -EFAULT;
2484                         goto free_and_out;
2485                 }
2486                 QETH_CARD_TEXT_(card, 4, "qacts");
2487         }
2488 free_and_out:
2489         kfree(qinfo.udata);
2490 out:
2491         return rc;
2492 }
2493
2494 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2495                                 struct qeth_arp_cache_entry *entry)
2496 {
2497         struct qeth_cmd_buffer *iob;
2498         char buf[16];
2499         int tmp;
2500         int rc;
2501
2502         QETH_CARD_TEXT(card, 3, "arpadent");
2503
2504         /*
2505          * currently GuestLAN only supports the ARP assist function
2506          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2507          * thus we say EOPNOTSUPP for this ARP function
2508          */
2509         if (card->info.guestlan)
2510                 return -EOPNOTSUPP;
2511         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2512                 return -EOPNOTSUPP;
2513         }
2514
2515         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2516                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2517                                        sizeof(struct qeth_arp_cache_entry),
2518                                        QETH_PROT_IPV4);
2519         rc = qeth_l3_send_setassparms(card, iob,
2520                                    sizeof(struct qeth_arp_cache_entry),
2521                                    (unsigned long) entry,
2522                                    qeth_l3_default_setassparms_cb, NULL);
2523         if (rc) {
2524                 tmp = rc;
2525                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2526                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2527                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2528                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2529         }
2530         return rc;
2531 }
2532
2533 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2534                                 struct qeth_arp_cache_entry *entry)
2535 {
2536         struct qeth_cmd_buffer *iob;
2537         char buf[16] = {0, };
2538         int tmp;
2539         int rc;
2540
2541         QETH_CARD_TEXT(card, 3, "arprment");
2542
2543         /*
2544          * currently GuestLAN only supports the ARP assist function
2545          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_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         memcpy(buf, entry, 12);
2554         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2555                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2556                                        12,
2557                                        QETH_PROT_IPV4);
2558         rc = qeth_l3_send_setassparms(card, iob,
2559                                    12, (unsigned long)buf,
2560                                    qeth_l3_default_setassparms_cb, NULL);
2561         if (rc) {
2562                 tmp = rc;
2563                 memset(buf, 0, 16);
2564                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2565                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2566                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2567                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2568         }
2569         return rc;
2570 }
2571
2572 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2573 {
2574         int rc;
2575         int tmp;
2576
2577         QETH_CARD_TEXT(card, 3, "arpflush");
2578
2579         /*
2580          * currently GuestLAN only supports the ARP assist function
2581          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2582          * thus we say EOPNOTSUPP for this ARP function
2583         */
2584         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2585                 return -EOPNOTSUPP;
2586         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2587                 return -EOPNOTSUPP;
2588         }
2589         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2590                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2591         if (rc) {
2592                 tmp = rc;
2593                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2594                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2595                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2596         }
2597         return rc;
2598 }
2599
2600 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2601 {
2602         struct qeth_card *card = dev->ml_priv;
2603         struct qeth_arp_cache_entry arp_entry;
2604         struct mii_ioctl_data *mii_data;
2605         int rc = 0;
2606
2607         if (!card)
2608                 return -ENODEV;
2609
2610         if ((card->state != CARD_STATE_UP) &&
2611                 (card->state != CARD_STATE_SOFTSETUP))
2612                 return -ENODEV;
2613
2614         switch (cmd) {
2615         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2616                 if (!capable(CAP_NET_ADMIN)) {
2617                         rc = -EPERM;
2618                         break;
2619                 }
2620                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2621                 break;
2622         case SIOC_QETH_ARP_QUERY_INFO:
2623                 if (!capable(CAP_NET_ADMIN)) {
2624                         rc = -EPERM;
2625                         break;
2626                 }
2627                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2628                 break;
2629         case SIOC_QETH_ARP_ADD_ENTRY:
2630                 if (!capable(CAP_NET_ADMIN)) {
2631                         rc = -EPERM;
2632                         break;
2633                 }
2634                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2635                                    sizeof(struct qeth_arp_cache_entry)))
2636                         rc = -EFAULT;
2637                 else
2638                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2639                 break;
2640         case SIOC_QETH_ARP_REMOVE_ENTRY:
2641                 if (!capable(CAP_NET_ADMIN)) {
2642                         rc = -EPERM;
2643                         break;
2644                 }
2645                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2646                                    sizeof(struct qeth_arp_cache_entry)))
2647                         rc = -EFAULT;
2648                 else
2649                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2650                 break;
2651         case SIOC_QETH_ARP_FLUSH_CACHE:
2652                 if (!capable(CAP_NET_ADMIN)) {
2653                         rc = -EPERM;
2654                         break;
2655                 }
2656                 rc = qeth_l3_arp_flush_cache(card);
2657                 break;
2658         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2659                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2660                 break;
2661         case SIOC_QETH_GET_CARD_TYPE:
2662                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2663                      card->info.type == QETH_CARD_TYPE_OSX) &&
2664                     !card->info.guestlan)
2665                         return 1;
2666                 return 0;
2667                 break;
2668         case SIOCGMIIPHY:
2669                 mii_data = if_mii(rq);
2670                 mii_data->phy_id = 0;
2671                 break;
2672         case SIOCGMIIREG:
2673                 mii_data = if_mii(rq);
2674                 if (mii_data->phy_id != 0)
2675                         rc = -EINVAL;
2676                 else
2677                         mii_data->val_out = qeth_mdio_read(dev,
2678                                                         mii_data->phy_id,
2679                                                         mii_data->reg_num);
2680                 break;
2681         case SIOC_QETH_QUERY_OAT:
2682                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2683                 break;
2684         default:
2685                 rc = -EOPNOTSUPP;
2686         }
2687         if (rc)
2688                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2689         return rc;
2690 }
2691
2692 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2693 {
2694         int cast_type = RTN_UNSPEC;
2695         struct neighbour *n = NULL;
2696         struct dst_entry *dst;
2697
2698         rcu_read_lock();
2699         dst = skb_dst(skb);
2700         if (dst)
2701                 n = dst_get_neighbour_noref(dst);
2702         if (n) {
2703                 cast_type = n->type;
2704                 rcu_read_unlock();
2705                 if ((cast_type == RTN_BROADCAST) ||
2706                     (cast_type == RTN_MULTICAST) ||
2707                     (cast_type == RTN_ANYCAST))
2708                         return cast_type;
2709                 else
2710                         return RTN_UNSPEC;
2711         }
2712         rcu_read_unlock();
2713
2714         /* try something else */
2715         if (skb->protocol == ETH_P_IPV6)
2716                 return (skb_network_header(skb)[24] == 0xff) ?
2717                                 RTN_MULTICAST : 0;
2718         else if (skb->protocol == ETH_P_IP)
2719                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2720                                 RTN_MULTICAST : 0;
2721         /* ... */
2722         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2723                 return RTN_BROADCAST;
2724         else {
2725                 u16 hdr_mac;
2726
2727                 hdr_mac = *((u16 *)skb->data);
2728                 /* tr multicast? */
2729                 switch (card->info.link_type) {
2730                 case QETH_LINK_TYPE_HSTR:
2731                 case QETH_LINK_TYPE_LANE_TR:
2732                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2733                             (hdr_mac == QETH_TR_MAC_C))
2734                                 return RTN_MULTICAST;
2735                         break;
2736                 /* eth or so multicast? */
2737                 default:
2738                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2739                             (hdr_mac == QETH_ETH_MAC_V6))
2740                                 return RTN_MULTICAST;
2741                 }
2742         }
2743         return cast_type;
2744 }
2745
2746 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2747                 struct qeth_hdr *hdr, struct sk_buff *skb)
2748 {
2749         char daddr[16];
2750         struct af_iucv_trans_hdr *iucv_hdr;
2751
2752         skb_pull(skb, 14);
2753         card->dev->header_ops->create(skb, card->dev, 0,
2754                                       card->dev->dev_addr, card->dev->dev_addr,
2755                                       card->dev->addr_len);
2756         skb_pull(skb, 14);
2757         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2758         memset(hdr, 0, sizeof(struct qeth_hdr));
2759         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2760         hdr->hdr.l3.ext_flags = 0;
2761         hdr->hdr.l3.length = skb->len;
2762         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2763         memset(daddr, 0, sizeof(daddr));
2764         daddr[0] = 0xfe;
2765         daddr[1] = 0x80;
2766         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2767         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2768 }
2769
2770 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2771                 struct sk_buff *skb, int ipv, int cast_type)
2772 {
2773         struct dst_entry *dst;
2774
2775         memset(hdr, 0, sizeof(struct qeth_hdr));
2776         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2777         hdr->hdr.l3.ext_flags = 0;
2778
2779         /*
2780          * before we're going to overwrite this location with next hop ip.
2781          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2782          */
2783         if (vlan_tx_tag_present(skb)) {
2784                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2785                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2786                 else
2787                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2788                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2789         }
2790
2791         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2792
2793         rcu_read_lock();
2794         dst = skb_dst(skb);
2795         if (ipv == 4) {
2796                 struct rtable *rt = (struct rtable *) dst;
2797                 __be32 *pkey = &ip_hdr(skb)->daddr;
2798
2799                 if (rt->rt_gateway)
2800                         pkey = &rt->rt_gateway;
2801
2802                 /* IPv4 */
2803                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2804                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2805                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2806         } else if (ipv == 6) {
2807                 struct rt6_info *rt = (struct rt6_info *) dst;
2808                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2809
2810                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2811                         pkey = &rt->rt6i_gateway;
2812
2813                 /* IPv6 */
2814                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2815                 if (card->info.type == QETH_CARD_TYPE_IQD)
2816                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2817                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2818         } else {
2819                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2820                             skb->dev->broadcast, 6)) {
2821                         /* broadcast? */
2822                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2823                                                 QETH_HDR_PASSTHRU;
2824                 } else {
2825                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2826                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2827                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2828                 }
2829         }
2830         rcu_read_unlock();
2831 }
2832
2833 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2834                 struct qeth_hdr *hdr, struct sk_buff *skb)
2835 {
2836         struct iphdr *iph = ip_hdr(skb);
2837
2838         /* tcph->check contains already the pseudo hdr checksum
2839          * so just set the header flags
2840          */
2841         if (iph->protocol == IPPROTO_UDP)
2842                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2843         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2844                 QETH_HDR_EXT_CSUM_HDR_REQ;
2845         iph->check = 0;
2846         if (card->options.performance_stats)
2847                 card->perf_stats.tx_csum++;
2848 }
2849
2850 static void qeth_tso_fill_header(struct qeth_card *card,
2851                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2852 {
2853         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2854         struct tcphdr *tcph = tcp_hdr(skb);
2855         struct iphdr *iph = ip_hdr(skb);
2856         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2857
2858         /*fix header to TSO values ...*/
2859         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2860         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2861         /*set values which are fix for the first approach ...*/
2862         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2863         hdr->ext.imb_hdr_no  = 1;
2864         hdr->ext.hdr_type    = 1;
2865         hdr->ext.hdr_version = 1;
2866         hdr->ext.hdr_len     = 28;
2867         /*insert non-fix values */
2868         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2869         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2870         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2871                                        sizeof(struct qeth_hdr_tso));
2872         tcph->check = 0;
2873         if (skb->protocol == ETH_P_IPV6) {
2874                 ip6h->payload_len = 0;
2875                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2876                                                0, IPPROTO_TCP, 0);
2877         } else {
2878                 /*OSA want us to set these values ...*/
2879                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2880                                          0, IPPROTO_TCP, 0);
2881                 iph->tot_len = 0;
2882                 iph->check = 0;
2883         }
2884 }
2885
2886 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2887 {
2888         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2889                 tcp_hdr(skb)->doff * 4;
2890         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2891         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2892         elements += skb_shinfo(skb)->nr_frags;
2893         return elements;
2894 }
2895
2896 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2897 {
2898         int rc;
2899         u16 *tag;
2900         struct qeth_hdr *hdr = NULL;
2901         int elements_needed = 0;
2902         int elems;
2903         struct qeth_card *card = dev->ml_priv;
2904         struct sk_buff *new_skb = NULL;
2905         int ipv = qeth_get_ip_version(skb);
2906         int cast_type = qeth_l3_get_cast_type(card, skb);
2907         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2908                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2909         int tx_bytes = skb->len;
2910         bool large_send;
2911         int data_offset = -1;
2912         int nr_frags;
2913
2914         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2915              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2916               ((card->options.cq == QETH_CQ_ENABLED) &&
2917                (skb->protocol != ETH_P_AF_IUCV)))) ||
2918             card->options.sniffer)
2919                         goto tx_drop;
2920
2921         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2922                 card->stats.tx_carrier_errors++;
2923                 goto tx_drop;
2924         }
2925
2926         if ((cast_type == RTN_BROADCAST) &&
2927             (card->info.broadcast_capable == 0))
2928                 goto tx_drop;
2929
2930         if (card->options.performance_stats) {
2931                 card->perf_stats.outbound_cnt++;
2932                 card->perf_stats.outbound_start_time = qeth_get_micros();
2933         }
2934
2935         large_send = skb_is_gso(skb);
2936
2937         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2938             (skb_shinfo(skb)->nr_frags == 0)) {
2939                 new_skb = skb;
2940                 if (new_skb->protocol == ETH_P_AF_IUCV)
2941                         data_offset = 0;
2942                 else
2943                         data_offset = ETH_HLEN;
2944                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2945                 if (!hdr)
2946                         goto tx_drop;
2947                 elements_needed++;
2948         } else {
2949                 /* create a clone with writeable headroom */
2950                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2951                                         + VLAN_HLEN);
2952                 if (!new_skb)
2953                         goto tx_drop;
2954         }
2955
2956         if (card->info.type == QETH_CARD_TYPE_IQD) {
2957                 if (data_offset < 0)
2958                         skb_pull(new_skb, ETH_HLEN);
2959         } else {
2960                 if (ipv == 4) {
2961                         skb_pull(new_skb, ETH_HLEN);
2962                 }
2963
2964                 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
2965                         skb_push(new_skb, VLAN_HLEN);
2966                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2967                         skb_copy_to_linear_data_offset(new_skb, 4,
2968                                 new_skb->data + 8, 4);
2969                         skb_copy_to_linear_data_offset(new_skb, 8,
2970                                 new_skb->data + 12, 4);
2971                         tag = (u16 *)(new_skb->data + 12);
2972                         *tag = __constant_htons(ETH_P_8021Q);
2973                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2974                 }
2975         }
2976
2977         netif_stop_queue(dev);
2978
2979         /* fix hardware limitation: as long as we do not have sbal
2980          * chaining we can not send long frag lists
2981          */
2982         if (large_send) {
2983                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2984                         if (skb_linearize(new_skb))
2985                                 goto tx_drop;
2986                         if (card->options.performance_stats)
2987                                 card->perf_stats.tx_lin++;
2988                 }
2989         }
2990
2991         if (large_send && (cast_type == RTN_UNSPEC)) {
2992                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2993                                                 sizeof(struct qeth_hdr_tso));
2994                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2995                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2996                 qeth_tso_fill_header(card, hdr, new_skb);
2997                 elements_needed++;
2998         } else {
2999                 if (data_offset < 0) {
3000                         hdr = (struct qeth_hdr *)skb_push(new_skb,
3001                                                 sizeof(struct qeth_hdr));
3002                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3003                                                 cast_type);
3004                 } else {
3005                         if (new_skb->protocol == ETH_P_AF_IUCV)
3006                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3007                         else {
3008                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3009                                                         cast_type);
3010                                 hdr->hdr.l3.length = new_skb->len - data_offset;
3011                         }
3012                 }
3013
3014                 if (skb->ip_summed == CHECKSUM_PARTIAL)
3015                         qeth_l3_hdr_csum(card, hdr, new_skb);
3016         }
3017
3018         elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3019                                                  elements_needed);
3020         if (!elems) {
3021                 if (data_offset >= 0)
3022                         kmem_cache_free(qeth_core_header_cache, hdr);
3023                 goto tx_drop;
3024         }
3025         elements_needed += elems;
3026         nr_frags = skb_shinfo(new_skb)->nr_frags;
3027
3028         if (card->info.type != QETH_CARD_TYPE_IQD) {
3029                 int len;
3030                 if (large_send)
3031                         len = ((unsigned long)tcp_hdr(new_skb) +
3032                                 tcp_hdr(new_skb)->doff * 4) -
3033                                 (unsigned long)new_skb->data;
3034                 else
3035                         len = sizeof(struct qeth_hdr_layer3);
3036
3037                 if (qeth_hdr_chk_and_bounce(new_skb, len))
3038                         goto tx_drop;
3039                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3040                                          elements_needed);
3041         } else
3042                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3043                                         elements_needed, data_offset, 0);
3044
3045         if (!rc) {
3046                 card->stats.tx_packets++;
3047                 card->stats.tx_bytes += tx_bytes;
3048                 if (new_skb != skb)
3049                         dev_kfree_skb_any(skb);
3050                 if (card->options.performance_stats) {
3051                         if (large_send) {
3052                                 card->perf_stats.large_send_bytes += tx_bytes;
3053                                 card->perf_stats.large_send_cnt++;
3054                         }
3055                         if (nr_frags) {
3056                                 card->perf_stats.sg_skbs_sent++;
3057                                 /* nr_frags + skb->data */
3058                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3059                         }
3060                 }
3061                 rc = NETDEV_TX_OK;
3062         } else {
3063                 if (data_offset >= 0)
3064                         kmem_cache_free(qeth_core_header_cache, hdr);
3065
3066                 if (rc == -EBUSY) {
3067                         if (new_skb != skb)
3068                                 dev_kfree_skb_any(new_skb);
3069                         return NETDEV_TX_BUSY;
3070                 } else
3071                         goto tx_drop;
3072         }
3073
3074         netif_wake_queue(dev);
3075         if (card->options.performance_stats)
3076                 card->perf_stats.outbound_time += qeth_get_micros() -
3077                         card->perf_stats.outbound_start_time;
3078         return rc;
3079
3080 tx_drop:
3081         card->stats.tx_dropped++;
3082         card->stats.tx_errors++;
3083         if ((new_skb != skb) && new_skb)
3084                 dev_kfree_skb_any(new_skb);
3085         dev_kfree_skb_any(skb);
3086         netif_wake_queue(dev);
3087         return NETDEV_TX_OK;
3088 }
3089
3090 static int __qeth_l3_open(struct net_device *dev)
3091 {
3092         struct qeth_card *card = dev->ml_priv;
3093         int rc = 0;
3094
3095         QETH_CARD_TEXT(card, 4, "qethopen");
3096         if (card->state == CARD_STATE_UP)
3097                 return rc;
3098         if (card->state != CARD_STATE_SOFTSETUP)
3099                 return -ENODEV;
3100         card->data.state = CH_STATE_UP;
3101         card->state = CARD_STATE_UP;
3102         netif_start_queue(dev);
3103
3104         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3105                 napi_enable(&card->napi);
3106                 napi_schedule(&card->napi);
3107         } else
3108                 rc = -EIO;
3109         return rc;
3110 }
3111
3112 static int qeth_l3_open(struct net_device *dev)
3113 {
3114         struct qeth_card *card = dev->ml_priv;
3115
3116         QETH_CARD_TEXT(card, 5, "qethope_");
3117         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3118                 QETH_CARD_TEXT(card, 3, "openREC");
3119                 return -ERESTARTSYS;
3120         }
3121         return __qeth_l3_open(dev);
3122 }
3123
3124 static int qeth_l3_stop(struct net_device *dev)
3125 {
3126         struct qeth_card *card = dev->ml_priv;
3127
3128         QETH_CARD_TEXT(card, 4, "qethstop");
3129         netif_tx_disable(dev);
3130         if (card->state == CARD_STATE_UP) {
3131                 card->state = CARD_STATE_SOFTSETUP;
3132                 napi_disable(&card->napi);
3133         }
3134         return 0;
3135 }
3136
3137 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3138         netdev_features_t features)
3139 {
3140         struct qeth_card *card = dev->ml_priv;
3141
3142         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3143                 features &= ~NETIF_F_IP_CSUM;
3144         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3145                 features &= ~NETIF_F_TSO;
3146         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3147                 features &= ~NETIF_F_RXCSUM;
3148
3149         return features;
3150 }
3151
3152 static int qeth_l3_set_features(struct net_device *dev,
3153         netdev_features_t features)
3154 {
3155         struct qeth_card *card = dev->ml_priv;
3156         u32 changed = dev->features ^ features;
3157         int err;
3158
3159         if (!(changed & NETIF_F_RXCSUM))
3160                 return 0;
3161
3162         if (card->state == CARD_STATE_DOWN ||
3163             card->state == CARD_STATE_RECOVER)
3164                 return 0;
3165
3166         err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3167         if (err)
3168                 dev->features = features ^ NETIF_F_RXCSUM;
3169
3170         return err;
3171 }
3172
3173 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3174         .get_link = ethtool_op_get_link,
3175         .get_strings = qeth_core_get_strings,
3176         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3177         .get_sset_count = qeth_core_get_sset_count,
3178         .get_drvinfo = qeth_core_get_drvinfo,
3179         .get_settings = qeth_core_ethtool_get_settings,
3180 };
3181
3182 /*
3183  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3184  * NOARP on the netdevice is no option because it also turns off neighbor
3185  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3186  * arp resolution but we want the hard header (packet socket will work
3187  * e.g. tcpdump)
3188  */
3189 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3190 {
3191         n->nud_state = NUD_NOARP;
3192         memcpy(n->ha, "FAKELL", 6);
3193         n->output = n->ops->connected_output;
3194         return 0;
3195 }
3196
3197 static int
3198 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3199 {
3200         if (np->tbl->family == AF_INET)
3201                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3202
3203         return 0;
3204 }
3205
3206 static const struct net_device_ops qeth_l3_netdev_ops = {
3207         .ndo_open               = qeth_l3_open,
3208         .ndo_stop               = qeth_l3_stop,
3209         .ndo_get_stats          = qeth_get_stats,
3210         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3211         .ndo_validate_addr      = eth_validate_addr,
3212         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3213         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3214         .ndo_change_mtu         = qeth_change_mtu,
3215         .ndo_fix_features       = qeth_l3_fix_features,
3216         .ndo_set_features       = qeth_l3_set_features,
3217         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3218         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3219         .ndo_tx_timeout         = qeth_tx_timeout,
3220 };
3221
3222 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3223         .ndo_open               = qeth_l3_open,
3224         .ndo_stop               = qeth_l3_stop,
3225         .ndo_get_stats          = qeth_get_stats,
3226         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3227         .ndo_validate_addr      = eth_validate_addr,
3228         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3229         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3230         .ndo_change_mtu         = qeth_change_mtu,
3231         .ndo_fix_features       = qeth_l3_fix_features,
3232         .ndo_set_features       = qeth_l3_set_features,
3233         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3234         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3235         .ndo_tx_timeout         = qeth_tx_timeout,
3236         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3237 };
3238
3239 static int qeth_l3_setup_netdev(struct qeth_card *card)
3240 {
3241         if (card->info.type == QETH_CARD_TYPE_OSD ||
3242             card->info.type == QETH_CARD_TYPE_OSX) {
3243                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3244                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3245                         pr_info("qeth_l3: ignoring TR device\n");
3246                         return -ENODEV;
3247                 } else {
3248                         card->dev = alloc_etherdev(0);
3249                         if (!card->dev)
3250                                 return -ENODEV;
3251                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3252
3253                         /*IPv6 address autoconfiguration stuff*/
3254                         qeth_l3_get_unique_id(card);
3255                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3256                                 card->dev->dev_id = card->info.unique_id &
3257                                                          0xffff;
3258                         if (!card->info.guestlan) {
3259                                 card->dev->hw_features = NETIF_F_SG |
3260                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3261                                         NETIF_F_TSO;
3262                                 card->dev->features = NETIF_F_RXCSUM;
3263                         }
3264                 }
3265         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3266                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3267                 if (!card->dev)
3268                         return -ENODEV;
3269                 card->dev->flags |= IFF_NOARP;
3270                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3271                 qeth_l3_iqd_read_initial_mac(card);
3272                 if (card->options.hsuid[0])
3273                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3274         } else
3275                 return -ENODEV;
3276
3277         card->dev->ml_priv = card;
3278         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3279         card->dev->mtu = card->info.initial_mtu;
3280         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3281         card->dev->features |=  NETIF_F_HW_VLAN_TX |
3282                                 NETIF_F_HW_VLAN_RX |
3283                                 NETIF_F_HW_VLAN_FILTER;
3284         card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3285         card->dev->gso_max_size = 15 * PAGE_SIZE;
3286
3287         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3288         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3289         return register_netdev(card->dev);
3290 }
3291
3292 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3293 {
3294         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3295
3296         qeth_l3_create_device_attributes(&gdev->dev);
3297         card->options.layer2 = 0;
3298         card->info.hwtrap = 0;
3299         return 0;
3300 }
3301
3302 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3303 {
3304         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3305
3306         qeth_l3_remove_device_attributes(&cgdev->dev);
3307
3308         qeth_set_allowed_threads(card, 0, 1);
3309         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3310
3311         if (cgdev->state == CCWGROUP_ONLINE)
3312                 qeth_l3_set_offline(cgdev);
3313
3314         if (card->dev) {
3315                 unregister_netdev(card->dev);
3316                 card->dev = NULL;
3317         }
3318
3319         qeth_l3_clear_ip_list(card, 0);
3320         qeth_l3_clear_ipato_list(card);
3321         return;
3322 }
3323
3324 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3325 {
3326         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3327         int rc = 0;
3328         enum qeth_card_states recover_flag;
3329
3330         BUG_ON(!card);
3331         mutex_lock(&card->discipline_mutex);
3332         mutex_lock(&card->conf_mutex);
3333         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3334         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3335
3336         recover_flag = card->state;
3337         rc = qeth_core_hardsetup_card(card);
3338         if (rc) {
3339                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3340                 rc = -ENODEV;
3341                 goto out_remove;
3342         }
3343
3344         if (!card->dev && qeth_l3_setup_netdev(card)) {
3345                 rc = -ENODEV;
3346                 goto out_remove;
3347         }
3348
3349         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3350                 if (card->info.hwtrap &&
3351                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3352                         card->info.hwtrap = 0;
3353         } else
3354                 card->info.hwtrap = 0;
3355
3356         card->state = CARD_STATE_HARDSETUP;
3357         memset(&card->rx, 0, sizeof(struct qeth_rx));
3358         qeth_print_status_message(card);
3359
3360         /* softsetup */
3361         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3362
3363         rc = qeth_send_startlan(card);
3364         if (rc) {
3365                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3366                 if (rc == 0xe080) {
3367                         dev_warn(&card->gdev->dev,
3368                                 "The LAN is offline\n");
3369                         card->lan_online = 0;
3370                         goto contin;
3371                 }
3372                 rc = -ENODEV;
3373                 goto out_remove;
3374         } else
3375                 card->lan_online = 1;
3376
3377 contin:
3378         rc = qeth_l3_setadapter_parms(card);
3379         if (rc)
3380                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3381         if (!card->options.sniffer) {
3382                 rc = qeth_l3_start_ipassists(card);
3383                 if (rc)
3384                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3385                 rc = qeth_l3_setrouting_v4(card);
3386                 if (rc)
3387                         QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3388                 rc = qeth_l3_setrouting_v6(card);
3389                 if (rc)
3390                         QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3391         }
3392         netif_tx_disable(card->dev);
3393
3394         rc = qeth_init_qdio_queues(card);
3395         if (rc) {
3396                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3397                 rc = -ENODEV;
3398                 goto out_remove;
3399         }
3400         card->state = CARD_STATE_SOFTSETUP;
3401
3402         qeth_set_allowed_threads(card, 0xffffffff, 0);
3403         qeth_l3_set_ip_addr_list(card);
3404         if (card->lan_online)
3405                 netif_carrier_on(card->dev);
3406         else
3407                 netif_carrier_off(card->dev);
3408         if (recover_flag == CARD_STATE_RECOVER) {
3409                 rtnl_lock();
3410                 if (recovery_mode)
3411                         __qeth_l3_open(card->dev);
3412                 else
3413                         dev_open(card->dev);
3414                 qeth_l3_set_multicast_list(card->dev);
3415                 rtnl_unlock();
3416         }
3417         /* let user_space know that device is online */
3418         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3419         mutex_unlock(&card->conf_mutex);
3420         mutex_unlock(&card->discipline_mutex);
3421         return 0;
3422 out_remove:
3423         qeth_l3_stop_card(card, 0);
3424         ccw_device_set_offline(CARD_DDEV(card));
3425         ccw_device_set_offline(CARD_WDEV(card));
3426         ccw_device_set_offline(CARD_RDEV(card));
3427         if (recover_flag == CARD_STATE_RECOVER)
3428                 card->state = CARD_STATE_RECOVER;
3429         else
3430                 card->state = CARD_STATE_DOWN;
3431         mutex_unlock(&card->conf_mutex);
3432         mutex_unlock(&card->discipline_mutex);
3433         return rc;
3434 }
3435
3436 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3437 {
3438         return __qeth_l3_set_online(gdev, 0);
3439 }
3440
3441 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3442                         int recovery_mode)
3443 {
3444         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3445         int rc = 0, rc2 = 0, rc3 = 0;
3446         enum qeth_card_states recover_flag;
3447
3448         mutex_lock(&card->discipline_mutex);
3449         mutex_lock(&card->conf_mutex);
3450         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3451         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3452
3453         if (card->dev && netif_carrier_ok(card->dev))
3454                 netif_carrier_off(card->dev);
3455         recover_flag = card->state;
3456         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3457                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3458                 card->info.hwtrap = 1;
3459         }
3460         qeth_l3_stop_card(card, recovery_mode);
3461         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3462                 rtnl_lock();
3463                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3464                 rtnl_unlock();
3465         }
3466         rc  = ccw_device_set_offline(CARD_DDEV(card));
3467         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3468         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3469         if (!rc)
3470                 rc = (rc2) ? rc2 : rc3;
3471         if (rc)
3472                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3473         if (recover_flag == CARD_STATE_UP)
3474                 card->state = CARD_STATE_RECOVER;
3475         /* let user_space know that device is offline */
3476         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3477         mutex_unlock(&card->conf_mutex);
3478         mutex_unlock(&card->discipline_mutex);
3479         return 0;
3480 }
3481
3482 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3483 {
3484         return __qeth_l3_set_offline(cgdev, 0);
3485 }
3486
3487 static int qeth_l3_recover(void *ptr)
3488 {
3489         struct qeth_card *card;
3490         int rc = 0;
3491
3492         card = (struct qeth_card *) ptr;
3493         QETH_CARD_TEXT(card, 2, "recover1");
3494         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3495         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3496                 return 0;
3497         QETH_CARD_TEXT(card, 2, "recover2");
3498         dev_warn(&card->gdev->dev,
3499                 "A recovery process has been started for the device\n");
3500         __qeth_l3_set_offline(card->gdev, 1);
3501         rc = __qeth_l3_set_online(card->gdev, 1);
3502         if (!rc)
3503                 dev_info(&card->gdev->dev,
3504                         "Device successfully recovered!\n");
3505         else {
3506                 rtnl_lock();
3507                 dev_close(card->dev);
3508                 rtnl_unlock();
3509                 dev_warn(&card->gdev->dev, "The qeth device driver "
3510                         "failed to recover an error on the device\n");
3511         }
3512         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3513         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3514         return 0;
3515 }
3516
3517 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3518 {
3519         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3520         qeth_set_allowed_threads(card, 0, 1);
3521         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3522                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3523         qeth_qdio_clear_card(card, 0);
3524         qeth_clear_qdio_buffers(card);
3525 }
3526
3527 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3528 {
3529         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3530
3531         if (card->dev)
3532                 netif_device_detach(card->dev);
3533         qeth_set_allowed_threads(card, 0, 1);
3534         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3535         if (gdev->state == CCWGROUP_OFFLINE)
3536                 return 0;
3537         if (card->state == CARD_STATE_UP) {
3538                 if (card->info.hwtrap)
3539                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3540                 __qeth_l3_set_offline(card->gdev, 1);
3541         } else
3542                 __qeth_l3_set_offline(card->gdev, 0);
3543         return 0;
3544 }
3545
3546 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3547 {
3548         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3549         int rc = 0;
3550
3551         if (gdev->state == CCWGROUP_OFFLINE)
3552                 goto out;
3553
3554         if (card->state == CARD_STATE_RECOVER) {
3555                 rc = __qeth_l3_set_online(card->gdev, 1);
3556                 if (rc) {
3557                         rtnl_lock();
3558                         dev_close(card->dev);
3559                         rtnl_unlock();
3560                 }
3561         } else
3562                 rc = __qeth_l3_set_online(card->gdev, 0);
3563 out:
3564         qeth_set_allowed_threads(card, 0xffffffff, 0);
3565         if (card->dev)
3566                 netif_device_attach(card->dev);
3567         if (rc)
3568                 dev_warn(&card->gdev->dev, "The qeth device driver "
3569                         "failed to recover an error on the device\n");
3570         return rc;
3571 }
3572
3573 struct qeth_discipline qeth_l3_discipline = {
3574         .start_poll = qeth_qdio_start_poll,
3575         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3576         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3577         .recover = qeth_l3_recover,
3578         .setup = qeth_l3_probe_device,
3579         .remove = qeth_l3_remove_device,
3580         .set_online = qeth_l3_set_online,
3581         .set_offline = qeth_l3_set_offline,
3582         .shutdown = qeth_l3_shutdown,
3583         .freeze = qeth_l3_pm_suspend,
3584         .thaw = qeth_l3_pm_resume,
3585         .restore = qeth_l3_pm_resume,
3586 };
3587 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3588
3589 static int qeth_l3_ip_event(struct notifier_block *this,
3590                             unsigned long event, void *ptr)
3591 {
3592         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3593         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3594         struct qeth_ipaddr *addr;
3595         struct qeth_card *card;
3596
3597         if (dev_net(dev) != &init_net)
3598                 return NOTIFY_DONE;
3599
3600         card = qeth_l3_get_card_from_dev(dev);
3601         if (!card)
3602                 return NOTIFY_DONE;
3603         QETH_CARD_TEXT(card, 3, "ipevent");
3604
3605         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3606         if (addr != NULL) {
3607                 addr->u.a4.addr = ifa->ifa_address;
3608                 addr->u.a4.mask = ifa->ifa_mask;
3609                 addr->type = QETH_IP_TYPE_NORMAL;
3610         } else
3611                 goto out;
3612
3613         switch (event) {
3614         case NETDEV_UP:
3615                 if (!qeth_l3_add_ip(card, addr))
3616                         kfree(addr);
3617                 break;
3618         case NETDEV_DOWN:
3619                 if (!qeth_l3_delete_ip(card, addr))
3620                         kfree(addr);
3621                 break;
3622         default:
3623                 break;
3624         }
3625         qeth_l3_set_ip_addr_list(card);
3626 out:
3627         return NOTIFY_DONE;
3628 }
3629
3630 static struct notifier_block qeth_l3_ip_notifier = {
3631         qeth_l3_ip_event,
3632         NULL,
3633 };
3634
3635 #ifdef CONFIG_QETH_IPV6
3636 /**
3637  * IPv6 event handler
3638  */
3639 static int qeth_l3_ip6_event(struct notifier_block *this,
3640                              unsigned long event, void *ptr)
3641 {
3642         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3643         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3644         struct qeth_ipaddr *addr;
3645         struct qeth_card *card;
3646
3647         card = qeth_l3_get_card_from_dev(dev);
3648         if (!card)
3649                 return NOTIFY_DONE;
3650         QETH_CARD_TEXT(card, 3, "ip6event");
3651         if (!qeth_is_supported(card, IPA_IPV6))
3652                 return NOTIFY_DONE;
3653
3654         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3655         if (addr != NULL) {
3656                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3657                 addr->u.a6.pfxlen = ifa->prefix_len;
3658                 addr->type = QETH_IP_TYPE_NORMAL;
3659         } else
3660                 goto out;
3661
3662         switch (event) {
3663         case NETDEV_UP:
3664                 if (!qeth_l3_add_ip(card, addr))
3665                         kfree(addr);
3666                 break;
3667         case NETDEV_DOWN:
3668                 if (!qeth_l3_delete_ip(card, addr))
3669                         kfree(addr);
3670                 break;
3671         default:
3672                 break;
3673         }
3674         qeth_l3_set_ip_addr_list(card);
3675 out:
3676         return NOTIFY_DONE;
3677 }
3678
3679 static struct notifier_block qeth_l3_ip6_notifier = {
3680         qeth_l3_ip6_event,
3681         NULL,
3682 };
3683 #endif
3684
3685 static int qeth_l3_register_notifiers(void)
3686 {
3687         int rc;
3688
3689         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3690         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3691         if (rc)
3692                 return rc;
3693 #ifdef CONFIG_QETH_IPV6
3694         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3695         if (rc) {
3696                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3697                 return rc;
3698         }
3699 #else
3700         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3701 #endif
3702         return 0;
3703 }
3704
3705 static void qeth_l3_unregister_notifiers(void)
3706 {
3707
3708         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3709         BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3710 #ifdef CONFIG_QETH_IPV6
3711         BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3712 #endif /* QETH_IPV6 */
3713 }
3714
3715 static int __init qeth_l3_init(void)
3716 {
3717         int rc = 0;
3718
3719         pr_info("register layer 3 discipline\n");
3720         rc = qeth_l3_register_notifiers();
3721         return rc;
3722 }
3723
3724 static void __exit qeth_l3_exit(void)
3725 {
3726         qeth_l3_unregister_notifiers();
3727         pr_info("unregister layer 3 discipline\n");
3728 }
3729
3730 module_init(qeth_l3_init);
3731 module_exit(qeth_l3_exit);
3732 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3733 MODULE_DESCRIPTION("qeth layer 3 discipline");
3734 MODULE_LICENSE("GPL");