drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *  drivers/s390/net/qeth_l3_main.c
   3  *
   4  *    Copyright IBM Corp. 2007, 2009
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  11 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/bitops.h>
  17 #include <linux/string.h>
  18 #include <linux/errno.h>
  19 #include <linux/kernel.h>
  20 #include <linux/etherdevice.h>
  21 #include <linux/mii.h>
  22 #include <linux/ip.h>
  23 #include <linux/ipv6.h>
  24 #include <linux/inetdevice.h>
  25 #include <linux/igmp.h>
  26 #include <linux/slab.h>
  27 #include <linux/if_vlan.h>
  28
  29 #include <net/ip.h>
  30 #include <net/arp.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_send_setadp_mode(struct qeth_card *card, __u32 command,
 978                                         __u32 mode)
 979 {
 980         int rc;
 981         struct qeth_cmd_buffer *iob;
 982         struct qeth_ipa_cmd *cmd;
 983
 984         QETH_CARD_TEXT(card, 4, "adpmode");
 985
 986         iob = qeth_get_adapter_cmd(card, command,
 987                                    sizeof(struct qeth_ipacmd_setadpparms));
 988         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 989         cmd->data.setadapterparms.data.mode = mode;
 990         rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
 991                                NULL);
 992         return rc;
 993 }
 994
 995 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
 996 {
 997         int rc;
 998
 999         QETH_CARD_TEXT(card, 4, "adphstr");
1000
1001         if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1002                 rc = qeth_l3_send_setadp_mode(card,
1003                                         IPA_SETADP_SET_BROADCAST_MODE,
1004                                         card->options.broadcast_mode);
1005                 if (rc)
1006                         QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1007                                    "device %s: x%x\n",
1008                                    CARD_BUS_ID(card), rc);
1009                 rc = qeth_l3_send_setadp_mode(card,
1010                                         IPA_SETADP_ALTER_MAC_ADDRESS,
1011                                         card->options.macaddr_mode);
1012                 if (rc)
1013                         QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1014                                    "device %s: x%x\n", CARD_BUS_ID(card), rc);
1015                 return rc;
1016         }
1017         if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1018                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1019                            "to set broadcast mode, using ALLRINGS "
1020                            "on device %s:\n", CARD_BUS_ID(card));
1021         if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1022                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1023                            "to set macaddr mode, using NONCANONICAL "
1024                            "on device %s:\n", CARD_BUS_ID(card));
1025         return 0;
1026 }
1027
1028 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1029 {
1030         int rc;
1031
1032         QETH_DBF_TEXT(SETUP, 2, "setadprm");
1033
1034         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1035                 dev_info(&card->gdev->dev,
1036                         "set adapter parameters not supported.\n");
1037                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1038                 return 0;
1039         }
1040         rc = qeth_query_setadapterparms(card);
1041         if (rc) {
1042                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1043                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1044                 return rc;
1045         }
1046         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1047                 rc = qeth_setadpparms_change_macaddr(card);
1048                 if (rc)
1049                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1050                                 " address failed\n");
1051         }
1052
1053         if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1054             (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1055                 rc = qeth_l3_setadapter_hstr(card);
1056
1057         return rc;
1058 }
1059
1060 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1061                         struct qeth_reply *reply, unsigned long data)
1062 {
1063         struct qeth_ipa_cmd *cmd;
1064
1065         QETH_CARD_TEXT(card, 4, "defadpcb");
1066
1067         cmd = (struct qeth_ipa_cmd *) data;
1068         if (cmd->hdr.return_code == 0) {
1069                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1070                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1071                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1072                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1073                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1074         }
1075         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1076             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1077                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1078                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1079         }
1080         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1081             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1082                 card->info.tx_csum_mask =
1083                         cmd->data.setassparms.data.flags_32bit;
1084                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1085         }
1086
1087         return 0;
1088 }
1089
1090 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1091         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1092         __u16 len, enum qeth_prot_versions prot)
1093 {
1094         struct qeth_cmd_buffer *iob;
1095         struct qeth_ipa_cmd *cmd;
1096
1097         QETH_CARD_TEXT(card, 4, "getasscm");
1098         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1099
1100         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1101         cmd->data.setassparms.hdr.assist_no = ipa_func;
1102         cmd->data.setassparms.hdr.length = 8 + len;
1103         cmd->data.setassparms.hdr.command_code = cmd_code;
1104         cmd->data.setassparms.hdr.return_code = 0;
1105         cmd->data.setassparms.hdr.seq_no = 0;
1106
1107         return iob;
1108 }
1109
1110 static int qeth_l3_send_setassparms(struct qeth_card *card,
1111         struct qeth_cmd_buffer *iob, __u16 len, long data,
1112         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1113                 unsigned long),
1114         void *reply_param)
1115 {
1116         int rc;
1117         struct qeth_ipa_cmd *cmd;
1118
1119         QETH_CARD_TEXT(card, 4, "sendassp");
1120
1121         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1122         if (len <= sizeof(__u32))
1123                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1124         else   /* (len > sizeof(__u32)) */
1125                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1126
1127         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1128         return rc;
1129 }
1130
1131 #ifdef CONFIG_QETH_IPV6
1132 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1133                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1134 {
1135         int rc;
1136         struct qeth_cmd_buffer *iob;
1137
1138         QETH_CARD_TEXT(card, 4, "simassp6");
1139         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1140                                        0, QETH_PROT_IPV6);
1141         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1142                                    qeth_l3_default_setassparms_cb, NULL);
1143         return rc;
1144 }
1145 #endif
1146
1147 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1148                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1149 {
1150         int rc;
1151         int length = 0;
1152         struct qeth_cmd_buffer *iob;
1153
1154         QETH_CARD_TEXT(card, 4, "simassp4");
1155         if (data)
1156                 length = sizeof(__u32);
1157         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1158                                        length, QETH_PROT_IPV4);
1159         rc = qeth_l3_send_setassparms(card, iob, length, data,
1160                                    qeth_l3_default_setassparms_cb, NULL);
1161         return rc;
1162 }
1163
1164 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1165 {
1166         int rc;
1167
1168         QETH_CARD_TEXT(card, 3, "ipaarp");
1169
1170         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1171                 dev_info(&card->gdev->dev,
1172                         "ARP processing not supported on %s!\n",
1173                         QETH_CARD_IFNAME(card));
1174                 return 0;
1175         }
1176         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1177                                         IPA_CMD_ASS_START, 0);
1178         if (rc) {
1179                 dev_warn(&card->gdev->dev,
1180                         "Starting ARP processing support for %s failed\n",
1181                         QETH_CARD_IFNAME(card));
1182         }
1183         return rc;
1184 }
1185
1186 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1187 {
1188         int rc;
1189
1190         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1191
1192         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1193                 dev_info(&card->gdev->dev,
1194                         "Hardware IP fragmentation not supported on %s\n",
1195                         QETH_CARD_IFNAME(card));
1196                 return  -EOPNOTSUPP;
1197         }
1198
1199         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1200                                           IPA_CMD_ASS_START, 0);
1201         if (rc) {
1202                 dev_warn(&card->gdev->dev,
1203                         "Starting IP fragmentation support for %s failed\n",
1204                         QETH_CARD_IFNAME(card));
1205         } else
1206                 dev_info(&card->gdev->dev,
1207                         "Hardware IP fragmentation enabled \n");
1208         return rc;
1209 }
1210
1211 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1212 {
1213         int rc;
1214
1215         QETH_CARD_TEXT(card, 3, "stsrcmac");
1216
1217         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1218                 dev_info(&card->gdev->dev,
1219                         "Inbound source MAC-address not supported on %s\n",
1220                         QETH_CARD_IFNAME(card));
1221                 return -EOPNOTSUPP;
1222         }
1223
1224         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1225                                           IPA_CMD_ASS_START, 0);
1226         if (rc)
1227                 dev_warn(&card->gdev->dev,
1228                         "Starting source MAC-address support for %s failed\n",
1229                         QETH_CARD_IFNAME(card));
1230         return rc;
1231 }
1232
1233 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1234 {
1235         int rc = 0;
1236
1237         QETH_CARD_TEXT(card, 3, "strtvlan");
1238
1239         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1240                 dev_info(&card->gdev->dev,
1241                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1242                 return -EOPNOTSUPP;
1243         }
1244
1245         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1246                                           IPA_CMD_ASS_START, 0);
1247         if (rc) {
1248                 dev_warn(&card->gdev->dev,
1249                         "Starting VLAN support for %s failed\n",
1250                         QETH_CARD_IFNAME(card));
1251         } else {
1252                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1253         }
1254         return rc;
1255 }
1256
1257 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1258 {
1259         int rc;
1260
1261         QETH_CARD_TEXT(card, 3, "stmcast");
1262
1263         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1264                 dev_info(&card->gdev->dev,
1265                         "Multicast not supported on %s\n",
1266                         QETH_CARD_IFNAME(card));
1267                 return -EOPNOTSUPP;
1268         }
1269
1270         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1271                                           IPA_CMD_ASS_START, 0);
1272         if (rc) {
1273                 dev_warn(&card->gdev->dev,
1274                         "Starting multicast support for %s failed\n",
1275                         QETH_CARD_IFNAME(card));
1276         } else {
1277                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1278                 card->dev->flags |= IFF_MULTICAST;
1279         }
1280         return rc;
1281 }
1282
1283 #ifdef CONFIG_QETH_IPV6
1284 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1285 {
1286         int rc;
1287
1288         QETH_CARD_TEXT(card, 3, "softipv6");
1289
1290         if (card->info.type == QETH_CARD_TYPE_IQD)
1291                 goto out;
1292
1293         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1294         if (rc) {
1295                 dev_err(&card->gdev->dev,
1296                         "Activating IPv6 support for %s failed\n",
1297                         QETH_CARD_IFNAME(card));
1298                 return rc;
1299         }
1300         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1301                                           IPA_CMD_ASS_START, 3);
1302         if (rc) {
1303                 dev_err(&card->gdev->dev,
1304                         "Activating IPv6 support for %s failed\n",
1305                         QETH_CARD_IFNAME(card));
1306                 return rc;
1307         }
1308         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1309                                                IPA_CMD_ASS_START);
1310         if (rc) {
1311                 dev_err(&card->gdev->dev,
1312                         "Activating IPv6 support for %s failed\n",
1313                          QETH_CARD_IFNAME(card));
1314                 return rc;
1315         }
1316         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1317                                                IPA_CMD_ASS_START);
1318         if (rc) {
1319                 dev_warn(&card->gdev->dev,
1320                         "Enabling the passthrough mode for %s failed\n",
1321                         QETH_CARD_IFNAME(card));
1322                 return rc;
1323         }
1324 out:
1325         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1326         return 0;
1327 }
1328 #endif
1329
1330 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1331 {
1332         int rc = 0;
1333
1334         QETH_CARD_TEXT(card, 3, "strtipv6");
1335
1336         if (!qeth_is_supported(card, IPA_IPV6)) {
1337                 dev_info(&card->gdev->dev,
1338                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1339                 return 0;
1340         }
1341 #ifdef CONFIG_QETH_IPV6
1342         rc = qeth_l3_softsetup_ipv6(card);
1343 #endif
1344         return rc ;
1345 }
1346
1347 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1348 {
1349         int rc;
1350
1351         QETH_CARD_TEXT(card, 3, "stbrdcst");
1352         card->info.broadcast_capable = 0;
1353         if (!qeth_is_supported(card, IPA_FILTERING)) {
1354                 dev_info(&card->gdev->dev,
1355                         "Broadcast not supported on %s\n",
1356                         QETH_CARD_IFNAME(card));
1357                 rc = -EOPNOTSUPP;
1358                 goto out;
1359         }
1360         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1361                                           IPA_CMD_ASS_START, 0);
1362         if (rc) {
1363                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1364                         "%s failed\n", QETH_CARD_IFNAME(card));
1365                 goto out;
1366         }
1367
1368         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1369                                           IPA_CMD_ASS_CONFIGURE, 1);
1370         if (rc) {
1371                 dev_warn(&card->gdev->dev,
1372                         "Setting up broadcast filtering for %s failed\n",
1373                         QETH_CARD_IFNAME(card));
1374                 goto out;
1375         }
1376         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1377         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1378         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1379                                           IPA_CMD_ASS_ENABLE, 1);
1380         if (rc) {
1381                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1382                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1383                 goto out;
1384         }
1385         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1386 out:
1387         if (card->info.broadcast_capable)
1388                 card->dev->flags |= IFF_BROADCAST;
1389         else
1390                 card->dev->flags &= ~IFF_BROADCAST;
1391         return rc;
1392 }
1393
1394 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1395 {
1396         int rc;
1397
1398         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1399                                           IPA_CMD_ASS_START, 0);
1400         if (rc) {
1401                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1402                         "failed, using SW checksumming\n",
1403                         QETH_CARD_IFNAME(card));
1404                 return rc;
1405         }
1406         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1407                                           IPA_CMD_ASS_ENABLE,
1408                                           card->info.csum_mask);
1409         if (rc) {
1410                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1411                         "failed, using SW checksumming\n",
1412                         QETH_CARD_IFNAME(card));
1413                 return rc;
1414         }
1415         return 0;
1416 }
1417
1418 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1419 {
1420         int rc = 0;
1421
1422         if (on) {
1423                 rc = qeth_l3_send_checksum_command(card);
1424                 if (rc)
1425                         return -EIO;
1426                 dev_info(&card->gdev->dev,
1427                         "HW Checksumming (inbound) enabled\n");
1428         } else {
1429                 rc = qeth_l3_send_simple_setassparms(card,
1430                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1431                 if (rc)
1432                         return -EIO;
1433         }
1434
1435         return 0;
1436 }
1437
1438 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1439 {
1440         QETH_CARD_TEXT(card, 3, "strtcsum");
1441
1442         if (card->dev->features & NETIF_F_RXCSUM) {
1443                 rtnl_lock();
1444                 /* force set_features call */
1445                 card->dev->features &= ~NETIF_F_RXCSUM;
1446                 netdev_update_features(card->dev);
1447                 rtnl_unlock();
1448         }
1449         return 0;
1450 }
1451
1452 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1453 {
1454         int rc = 0;
1455
1456         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1457                 return rc;
1458         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1459                           IPA_CMD_ASS_START, 0);
1460         if (rc)
1461                 goto err_out;
1462         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1463                           IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1464         if (rc)
1465                 goto err_out;
1466         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1467         return rc;
1468 err_out:
1469         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1470                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1471         return rc;
1472 }
1473
1474 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1475 {
1476         int rc;
1477
1478         QETH_CARD_TEXT(card, 3, "sttso");
1479
1480         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1481                 dev_info(&card->gdev->dev,
1482                         "Outbound TSO not supported on %s\n",
1483                         QETH_CARD_IFNAME(card));
1484                 rc = -EOPNOTSUPP;
1485         } else {
1486                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1487                                                 IPA_CMD_ASS_START, 0);
1488                 if (rc)
1489                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1490                                 "segmentation offload for %s failed\n",
1491                                 QETH_CARD_IFNAME(card));
1492                 else
1493                         dev_info(&card->gdev->dev,
1494                                 "Outbound TSO enabled\n");
1495         }
1496         if (rc)
1497                 card->dev->features &= ~NETIF_F_TSO;
1498         return rc;
1499 }
1500
1501 static int qeth_l3_start_ipassists(struct qeth_card *card)
1502 {
1503         QETH_CARD_TEXT(card, 3, "strtipas");
1504
1505         qeth_set_access_ctrl_online(card);      /* go on*/
1506         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1507         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1508         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1509         qeth_l3_start_ipa_vlan(card);           /* go on*/
1510         qeth_l3_start_ipa_multicast(card);              /* go on*/
1511         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1512         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1513         qeth_l3_start_ipa_checksum(card);               /* go on*/
1514         qeth_l3_start_ipa_tx_checksum(card);
1515         qeth_l3_start_ipa_tso(card);            /* go on*/
1516         return 0;
1517 }
1518
1519 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1520                 struct qeth_reply *reply, unsigned long data)
1521 {
1522         struct qeth_ipa_cmd *cmd;
1523
1524         cmd = (struct qeth_ipa_cmd *) data;
1525         if (cmd->hdr.return_code == 0)
1526                 memcpy(card->dev->dev_addr,
1527                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1528         else
1529                 random_ether_addr(card->dev->dev_addr);
1530
1531         return 0;
1532 }
1533
1534 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1535 {
1536         int rc = 0;
1537         struct qeth_cmd_buffer *iob;
1538         struct qeth_ipa_cmd *cmd;
1539
1540         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1541
1542         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1543                                      QETH_PROT_IPV6);
1544         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1545         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1546                         card->info.unique_id;
1547
1548         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1549                                 NULL);
1550         return rc;
1551 }
1552
1553 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1554                 struct qeth_reply *reply, unsigned long data)
1555 {
1556         struct qeth_ipa_cmd *cmd;
1557
1558         cmd = (struct qeth_ipa_cmd *) data;
1559         if (cmd->hdr.return_code == 0)
1560                 card->info.unique_id = *((__u16 *)
1561                                 &cmd->data.create_destroy_addr.unique_id[6]);
1562         else {
1563                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1564                                         UNIQUE_ID_NOT_BY_CARD;
1565                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1566                         "generate a unique ID\n");
1567         }
1568         return 0;
1569 }
1570
1571 static int qeth_l3_get_unique_id(struct qeth_card *card)
1572 {
1573         int rc = 0;
1574         struct qeth_cmd_buffer *iob;
1575         struct qeth_ipa_cmd *cmd;
1576
1577         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1578
1579         if (!qeth_is_supported(card, IPA_IPV6)) {
1580                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1581                                         UNIQUE_ID_NOT_BY_CARD;
1582                 return 0;
1583         }
1584
1585         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1586                                      QETH_PROT_IPV6);
1587         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1588         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1589                         card->info.unique_id;
1590
1591         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1592         return rc;
1593 }
1594
1595 static int
1596 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1597                             unsigned long data)
1598 {
1599         struct qeth_ipa_cmd        *cmd;
1600         __u16 rc;
1601
1602         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1603
1604         cmd = (struct qeth_ipa_cmd *)data;
1605         rc = cmd->hdr.return_code;
1606         if (rc)
1607                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1608         switch (cmd->data.diagass.action) {
1609         case QETH_DIAGS_CMD_TRACE_QUERY:
1610                 break;
1611         case QETH_DIAGS_CMD_TRACE_DISABLE:
1612                 switch (rc) {
1613                 case 0:
1614                 case IPA_RC_INVALID_SUBCMD:
1615                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1616                         dev_info(&card->gdev->dev, "The HiperSockets network "
1617                                 "traffic analyzer is deactivated\n");
1618                         break;
1619                 default:
1620                         break;
1621                 }
1622                 break;
1623         case QETH_DIAGS_CMD_TRACE_ENABLE:
1624                 switch (rc) {
1625                 case 0:
1626                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1627                         dev_info(&card->gdev->dev, "The HiperSockets network "
1628                                 "traffic analyzer is activated\n");
1629                         break;
1630                 case IPA_RC_HARDWARE_AUTH_ERROR:
1631                         dev_warn(&card->gdev->dev, "The device is not "
1632                                 "authorized to run as a HiperSockets network "
1633                                 "traffic analyzer\n");
1634                         break;
1635                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1636                         dev_warn(&card->gdev->dev, "A HiperSockets "
1637                                 "network traffic analyzer is already "
1638                                 "active in the HiperSockets LAN\n");
1639                         break;
1640                 default:
1641                         break;
1642                 }
1643                 break;
1644         default:
1645                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1646                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1647         }
1648
1649         return 0;
1650 }
1651
1652 static int
1653 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1654 {
1655         struct qeth_cmd_buffer *iob;
1656         struct qeth_ipa_cmd    *cmd;
1657
1658         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1659
1660         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1661         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1662         cmd->data.diagass.subcmd_len = 16;
1663         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1664         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1665         cmd->data.diagass.action = diags_cmd;
1666         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1667 }
1668
1669 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1670                                 struct net_device *dev)
1671 {
1672         if (dev->type == ARPHRD_IEEE802_TR)
1673                 ip_tr_mc_map(ipm, mac);
1674         else
1675                 ip_eth_mc_map(ipm, mac);
1676 }
1677
1678 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1679 {
1680         struct qeth_ipaddr *ipm;
1681         struct ip_mc_list *im4;
1682         char buf[MAX_ADDR_LEN];
1683
1684         QETH_CARD_TEXT(card, 4, "addmc");
1685         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1686              im4 = rcu_dereference(im4->next_rcu)) {
1687                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1688                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1689                 if (!ipm)
1690                         continue;
1691                 ipm->u.a4.addr = im4->multiaddr;
1692                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1693                 ipm->is_multicast = 1;
1694                 if (!qeth_l3_add_ip(card, ipm))
1695                         kfree(ipm);
1696         }
1697 }
1698
1699 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1700 {
1701         struct in_device *in_dev;
1702         u16 vid;
1703
1704         QETH_CARD_TEXT(card, 4, "addmcvl");
1705         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1706                 return;
1707
1708         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1709                 struct net_device *netdev;
1710
1711                 rcu_read_lock();
1712                 netdev = __vlan_find_dev_deep(card->dev, vid);
1713                 rcu_read_unlock();
1714                 if (netdev == NULL ||
1715                     !(netdev->flags & IFF_UP))
1716                         continue;
1717                 in_dev = in_dev_get(netdev);
1718                 if (!in_dev)
1719                         continue;
1720                 rcu_read_lock();
1721                 qeth_l3_add_mc(card, in_dev);
1722                 rcu_read_unlock();
1723                 in_dev_put(in_dev);
1724         }
1725 }
1726
1727 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1728 {
1729         struct in_device *in4_dev;
1730
1731         QETH_CARD_TEXT(card, 4, "chkmcv4");
1732         in4_dev = in_dev_get(card->dev);
1733         if (in4_dev == NULL)
1734                 return;
1735         rcu_read_lock();
1736         qeth_l3_add_mc(card, in4_dev);
1737         qeth_l3_add_vlan_mc(card);
1738         rcu_read_unlock();
1739         in_dev_put(in4_dev);
1740 }
1741
1742 #ifdef CONFIG_QETH_IPV6
1743 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1744 {
1745         struct qeth_ipaddr *ipm;
1746         struct ifmcaddr6 *im6;
1747         char buf[MAX_ADDR_LEN];
1748
1749         QETH_CARD_TEXT(card, 4, "addmc6");
1750         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1751                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1752                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1753                 if (!ipm)
1754                         continue;
1755                 ipm->is_multicast = 1;
1756                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1757                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1758                        sizeof(struct in6_addr));
1759                 if (!qeth_l3_add_ip(card, ipm))
1760                         kfree(ipm);
1761         }
1762 }
1763
1764 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1765 {
1766         struct inet6_dev *in_dev;
1767         u16 vid;
1768
1769         QETH_CARD_TEXT(card, 4, "admc6vl");
1770         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1771                 return;
1772
1773         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1774                 struct net_device *netdev;
1775
1776                 netdev = __vlan_find_dev_deep(card->dev, vid);
1777                 if (netdev == NULL ||
1778                     !(netdev->flags & IFF_UP))
1779                         continue;
1780                 in_dev = in6_dev_get(netdev);
1781                 if (!in_dev)
1782                         continue;
1783                 read_lock_bh(&in_dev->lock);
1784                 qeth_l3_add_mc6(card, in_dev);
1785                 read_unlock_bh(&in_dev->lock);
1786                 in6_dev_put(in_dev);
1787         }
1788 }
1789
1790 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1791 {
1792         struct inet6_dev *in6_dev;
1793
1794         QETH_CARD_TEXT(card, 4, "chkmcv6");
1795         if (!qeth_is_supported(card, IPA_IPV6))
1796                 return ;
1797         in6_dev = in6_dev_get(card->dev);
1798         if (in6_dev == NULL)
1799                 return;
1800         read_lock_bh(&in6_dev->lock);
1801         qeth_l3_add_mc6(card, in6_dev);
1802         qeth_l3_add_vlan_mc6(card);
1803         read_unlock_bh(&in6_dev->lock);
1804         in6_dev_put(in6_dev);
1805 }
1806 #endif /* CONFIG_QETH_IPV6 */
1807
1808 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1809                         unsigned short vid)
1810 {
1811         struct in_device *in_dev;
1812         struct in_ifaddr *ifa;
1813         struct qeth_ipaddr *addr;
1814         struct net_device *netdev;
1815
1816         QETH_CARD_TEXT(card, 4, "frvaddr4");
1817
1818         netdev = __vlan_find_dev_deep(card->dev, vid);
1819         in_dev = in_dev_get(netdev);
1820         if (!in_dev)
1821                 return;
1822         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1823                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1824                 if (addr) {
1825                         addr->u.a4.addr = ifa->ifa_address;
1826                         addr->u.a4.mask = ifa->ifa_mask;
1827                         addr->type = QETH_IP_TYPE_NORMAL;
1828                         if (!qeth_l3_delete_ip(card, addr))
1829                                 kfree(addr);
1830                 }
1831         }
1832         in_dev_put(in_dev);
1833 }
1834
1835 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1836                         unsigned short vid)
1837 {
1838 #ifdef CONFIG_QETH_IPV6
1839         struct inet6_dev *in6_dev;
1840         struct inet6_ifaddr *ifa;
1841         struct qeth_ipaddr *addr;
1842         struct net_device *netdev;
1843
1844         QETH_CARD_TEXT(card, 4, "frvaddr6");
1845
1846         netdev = __vlan_find_dev_deep(card->dev, vid);
1847         in6_dev = in6_dev_get(netdev);
1848         if (!in6_dev)
1849                 return;
1850         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1851                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1852                 if (addr) {
1853                         memcpy(&addr->u.a6.addr, &ifa->addr,
1854                                sizeof(struct in6_addr));
1855                         addr->u.a6.pfxlen = ifa->prefix_len;
1856                         addr->type = QETH_IP_TYPE_NORMAL;
1857                         if (!qeth_l3_delete_ip(card, addr))
1858                                 kfree(addr);
1859                 }
1860         }
1861         in6_dev_put(in6_dev);
1862 #endif /* CONFIG_QETH_IPV6 */
1863 }
1864
1865 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1866                         unsigned short vid)
1867 {
1868         qeth_l3_free_vlan_addresses4(card, vid);
1869         qeth_l3_free_vlan_addresses6(card, vid);
1870 }
1871
1872 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1873 {
1874         struct qeth_card *card = dev->ml_priv;
1875
1876         set_bit(vid, card->active_vlans);
1877         return;
1878 }
1879
1880 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1881 {
1882         struct qeth_card *card = dev->ml_priv;
1883         unsigned long flags;
1884
1885         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1886         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1887                 QETH_CARD_TEXT(card, 3, "kidREC");
1888                 return;
1889         }
1890         spin_lock_irqsave(&card->vlanlock, flags);
1891         /* unregister IP addresses of vlan device */
1892         qeth_l3_free_vlan_addresses(card, vid);
1893         clear_bit(vid, card->active_vlans);
1894         spin_unlock_irqrestore(&card->vlanlock, flags);
1895         qeth_l3_set_multicast_list(card->dev);
1896 }
1897
1898 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1899                         struct sk_buff *skb, struct qeth_hdr *hdr,
1900                         unsigned short *vlan_id)
1901 {
1902         __be16 prot;
1903         struct iphdr *ip_hdr;
1904         unsigned char tg_addr[MAX_ADDR_LEN];
1905         int is_vlan = 0;
1906
1907         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1908                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1909                               ETH_P_IP);
1910                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1911                 case QETH_CAST_MULTICAST:
1912                         switch (prot) {
1913 #ifdef CONFIG_QETH_IPV6
1914                         case __constant_htons(ETH_P_IPV6):
1915                                 ndisc_mc_map((struct in6_addr *)
1916                                      skb->data + 24,
1917                                      tg_addr, card->dev, 0);
1918                                 break;
1919 #endif
1920                         case __constant_htons(ETH_P_IP):
1921                                 ip_hdr = (struct iphdr *)skb->data;
1922                                 (card->dev->type == ARPHRD_IEEE802_TR) ?
1923                                 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1924                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1925                                 break;
1926                         default:
1927                                 memcpy(tg_addr, card->dev->broadcast,
1928                                         card->dev->addr_len);
1929                         }
1930                         card->stats.multicast++;
1931                         skb->pkt_type = PACKET_MULTICAST;
1932                         break;
1933                 case QETH_CAST_BROADCAST:
1934                         memcpy(tg_addr, card->dev->broadcast,
1935                                 card->dev->addr_len);
1936                         card->stats.multicast++;
1937                         skb->pkt_type = PACKET_BROADCAST;
1938                         break;
1939                 case QETH_CAST_UNICAST:
1940                 case QETH_CAST_ANYCAST:
1941                 case QETH_CAST_NOCAST:
1942                 default:
1943                         if (card->options.sniffer)
1944                                 skb->pkt_type = PACKET_OTHERHOST;
1945                         else
1946                                 skb->pkt_type = PACKET_HOST;
1947                         memcpy(tg_addr, card->dev->dev_addr,
1948                                 card->dev->addr_len);
1949                 }
1950                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1951                         card->dev->header_ops->create(skb, card->dev, prot,
1952                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1953                                 card->dev->addr_len);
1954                 else
1955                         card->dev->header_ops->create(skb, card->dev, prot,
1956                                 tg_addr, "FAKELL", card->dev->addr_len);
1957         }
1958
1959 #ifdef CONFIG_TR
1960         if (card->dev->type == ARPHRD_IEEE802_TR)
1961                 skb->protocol = tr_type_trans(skb, card->dev);
1962         else
1963 #endif
1964                 skb->protocol = eth_type_trans(skb, card->dev);
1965
1966         if (hdr->hdr.l3.ext_flags &
1967             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1968                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1969                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1970                 is_vlan = 1;
1971         }
1972
1973         if (card->dev->features & NETIF_F_RXCSUM) {
1974                 if ((hdr->hdr.l3.ext_flags &
1975                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1976                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1977                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1978                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1979                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1980                 else
1981                         skb->ip_summed = CHECKSUM_NONE;
1982         } else
1983                 skb->ip_summed = CHECKSUM_NONE;
1984
1985         return is_vlan;
1986 }
1987
1988 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1989                                 int budget, int *done)
1990 {
1991         int work_done = 0;
1992         struct sk_buff *skb;
1993         struct qeth_hdr *hdr;
1994         __u16 vlan_tag = 0;
1995         int is_vlan;
1996         unsigned int len;
1997         __u16 magic;
1998
1999         *done = 0;
2000         BUG_ON(!budget);
2001         while (budget) {
2002                 skb = qeth_core_get_next_skb(card,
2003                         &card->qdio.in_q->bufs[card->rx.b_index],
2004                         &card->rx.b_element, &card->rx.e_offset, &hdr);
2005                 if (!skb) {
2006                         *done = 1;
2007                         break;
2008                 }
2009                 skb->dev = card->dev;
2010                 switch (hdr->hdr.l3.id) {
2011                 case QETH_HEADER_TYPE_LAYER3:
2012                         magic = *(__u16 *)skb->data;
2013                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2014                             (magic == ETH_P_AF_IUCV)) {
2015                                 skb->protocol = ETH_P_AF_IUCV;
2016                                 skb->pkt_type = PACKET_HOST;
2017                                 skb->mac_header = NET_SKB_PAD;
2018                                 skb->dev = card->dev;
2019                                 len = skb->len;
2020                                 card->dev->header_ops->create(skb, card->dev, 0,
2021                                         card->dev->dev_addr, "FAKELL",
2022                                         card->dev->addr_len);
2023                                 netif_receive_skb(skb);
2024                         } else {
2025                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
2026                                                       &vlan_tag);
2027                                 len = skb->len;
2028                                 if (is_vlan && !card->options.sniffer)
2029                                         __vlan_hwaccel_put_tag(skb, vlan_tag);
2030                                 napi_gro_receive(&card->napi, skb);
2031                         }
2032                         break;
2033                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2034                         skb->pkt_type = PACKET_HOST;
2035                         skb->protocol = eth_type_trans(skb, skb->dev);
2036                         len = skb->len;
2037                         netif_receive_skb(skb);
2038                         break;
2039                 default:
2040                         dev_kfree_skb_any(skb);
2041                         QETH_CARD_TEXT(card, 3, "inbunkno");
2042                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2043                         continue;
2044                 }
2045                 work_done++;
2046                 budget--;
2047                 card->stats.rx_packets++;
2048                 card->stats.rx_bytes += len;
2049         }
2050         return work_done;
2051 }
2052
2053 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2054 {
2055         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2056         int work_done = 0;
2057         struct qeth_qdio_buffer *buffer;
2058         int done;
2059         int new_budget = budget;
2060
2061         if (card->options.performance_stats) {
2062                 card->perf_stats.inbound_cnt++;
2063                 card->perf_stats.inbound_start_time = qeth_get_micros();
2064         }
2065
2066         while (1) {
2067                 if (!card->rx.b_count) {
2068                         card->rx.qdio_err = 0;
2069                         card->rx.b_count = qdio_get_next_buffers(
2070                                 card->data.ccwdev, 0, &card->rx.b_index,
2071                                 &card->rx.qdio_err);
2072                         if (card->rx.b_count <= 0) {
2073                                 card->rx.b_count = 0;
2074                                 break;
2075                         }
2076                         card->rx.b_element =
2077                                 &card->qdio.in_q->bufs[card->rx.b_index]
2078                                 .buffer->element[0];
2079                         card->rx.e_offset = 0;
2080                 }
2081
2082                 while (card->rx.b_count) {
2083                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2084                         if (!(card->rx.qdio_err &&
2085                             qeth_check_qdio_errors(card, buffer->buffer,
2086                             card->rx.qdio_err, "qinerr")))
2087                                 work_done += qeth_l3_process_inbound_buffer(
2088                                         card, new_budget, &done);
2089                         else
2090                                 done = 1;
2091
2092                         if (done) {
2093                                 if (card->options.performance_stats)
2094                                         card->perf_stats.bufs_rec++;
2095                                 qeth_put_buffer_pool_entry(card,
2096                                         buffer->pool_entry);
2097                                 qeth_queue_input_buffer(card, card->rx.b_index);
2098                                 card->rx.b_count--;
2099                                 if (card->rx.b_count) {
2100                                         card->rx.b_index =
2101                                                 (card->rx.b_index + 1) %
2102                                                 QDIO_MAX_BUFFERS_PER_Q;
2103                                         card->rx.b_element =
2104                                                 &card->qdio.in_q
2105                                                 ->bufs[card->rx.b_index]
2106                                                 .buffer->element[0];
2107                                         card->rx.e_offset = 0;
2108                                 }
2109                         }
2110
2111                         if (work_done >= budget)
2112                                 goto out;
2113                         else
2114                                 new_budget = budget - work_done;
2115                 }
2116         }
2117
2118         napi_complete(napi);
2119         if (qdio_start_irq(card->data.ccwdev, 0))
2120                 napi_schedule(&card->napi);
2121 out:
2122         if (card->options.performance_stats)
2123                 card->perf_stats.inbound_time += qeth_get_micros() -
2124                         card->perf_stats.inbound_start_time;
2125         return work_done;
2126 }
2127
2128 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2129                         struct qeth_card *card)
2130 {
2131         int rc = 0;
2132         u16 vid;
2133
2134         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2135                 struct net_device *netdev;
2136
2137                 rcu_read_lock();
2138                 netdev = __vlan_find_dev_deep(dev, vid);
2139                 rcu_read_unlock();
2140                 if (netdev == dev) {
2141                         rc = QETH_VLAN_CARD;
2142                         break;
2143                 }
2144         }
2145
2146         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2147                 return 0;
2148
2149         return rc;
2150 }
2151
2152 static int qeth_l3_verify_dev(struct net_device *dev)
2153 {
2154         struct qeth_card *card;
2155         unsigned long flags;
2156         int rc = 0;
2157
2158         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2159         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2160                 if (card->dev == dev) {
2161                         rc = QETH_REAL_CARD;
2162                         break;
2163                 }
2164                 rc = qeth_l3_verify_vlan_dev(dev, card);
2165                 if (rc)
2166                         break;
2167         }
2168         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2169
2170         return rc;
2171 }
2172
2173 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2174 {
2175         struct qeth_card *card = NULL;
2176         int rc;
2177
2178         rc = qeth_l3_verify_dev(dev);
2179         if (rc == QETH_REAL_CARD)
2180                 card = dev->ml_priv;
2181         else if (rc == QETH_VLAN_CARD)
2182                 card = vlan_dev_real_dev(dev)->ml_priv;
2183         if (card && card->options.layer2)
2184                 card = NULL;
2185         if (card)
2186                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2187         return card ;
2188 }
2189
2190 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2191 {
2192         int rc = 0;
2193
2194         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2195         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2196
2197         qeth_set_allowed_threads(card, 0, 1);
2198         if (card->options.sniffer &&
2199             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2200                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2201         if (card->read.state == CH_STATE_UP &&
2202             card->write.state == CH_STATE_UP &&
2203             (card->state == CARD_STATE_UP)) {
2204                 if (recovery_mode)
2205                         qeth_l3_stop(card->dev);
2206                 else {
2207                         rtnl_lock();
2208                         dev_close(card->dev);
2209                         rtnl_unlock();
2210                 }
2211                 card->state = CARD_STATE_SOFTSETUP;
2212         }
2213         if (card->state == CARD_STATE_SOFTSETUP) {
2214                 qeth_l3_clear_ip_list(card, 1);
2215                 qeth_clear_ipacmd_list(card);
2216                 card->state = CARD_STATE_HARDSETUP;
2217         }
2218         if (card->state == CARD_STATE_HARDSETUP) {
2219                 qeth_qdio_clear_card(card, 0);
2220                 qeth_clear_qdio_buffers(card);
2221                 qeth_clear_working_pool_list(card);
2222                 card->state = CARD_STATE_DOWN;
2223         }
2224         if (card->state == CARD_STATE_DOWN) {
2225                 qeth_clear_cmd_buffers(&card->read);
2226                 qeth_clear_cmd_buffers(&card->write);
2227         }
2228         return rc;
2229 }
2230
2231 /*
2232  * test for and Switch promiscuous mode (on or off)
2233  *  either for guestlan or HiperSocket Sniffer
2234  */
2235 static void
2236 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2237 {
2238         struct net_device *dev = card->dev;
2239
2240         if (((dev->flags & IFF_PROMISC) &&
2241              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2242             (!(dev->flags & IFF_PROMISC) &&
2243              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2244                 return;
2245
2246         if (card->info.guestlan) {              /* Guestlan trace */
2247                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2248                         qeth_setadp_promisc_mode(card);
2249         } else if (card->options.sniffer &&     /* HiperSockets trace */
2250                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2251                 if (dev->flags & IFF_PROMISC) {
2252                         QETH_CARD_TEXT(card, 3, "+promisc");
2253                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2254                 } else {
2255                         QETH_CARD_TEXT(card, 3, "-promisc");
2256                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2257                 }
2258         }
2259 }
2260
2261 static void qeth_l3_set_multicast_list(struct net_device *dev)
2262 {
2263         struct qeth_card *card = dev->ml_priv;
2264
2265         QETH_CARD_TEXT(card, 3, "setmulti");
2266         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2267             (card->state != CARD_STATE_UP))
2268                 return;
2269         if (!card->options.sniffer) {
2270                 qeth_l3_delete_mc_addresses(card);
2271                 qeth_l3_add_multicast_ipv4(card);
2272 #ifdef CONFIG_QETH_IPV6
2273                 qeth_l3_add_multicast_ipv6(card);
2274 #endif
2275                 qeth_l3_set_ip_addr_list(card);
2276                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2277                         return;
2278         }
2279         qeth_l3_handle_promisc_mode(card);
2280 }
2281
2282 static const char *qeth_l3_arp_get_error_cause(int *rc)
2283 {
2284         switch (*rc) {
2285         case QETH_IPA_ARP_RC_FAILED:
2286                 *rc = -EIO;
2287                 return "operation failed";
2288         case QETH_IPA_ARP_RC_NOTSUPP:
2289                 *rc = -EOPNOTSUPP;
2290                 return "operation not supported";
2291         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2292                 *rc = -EINVAL;
2293                 return "argument out of range";
2294         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2295                 *rc = -EOPNOTSUPP;
2296                 return "query operation not supported";
2297         case QETH_IPA_ARP_RC_Q_NO_DATA:
2298                 *rc = -ENOENT;
2299                 return "no query data available";
2300         default:
2301                 return "unknown error";
2302         }
2303 }
2304
2305 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2306 {
2307         int tmp;
2308         int rc;
2309
2310         QETH_CARD_TEXT(card, 3, "arpstnoe");
2311
2312         /*
2313          * currently GuestLAN only supports the ARP assist function
2314          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2315          * thus we say EOPNOTSUPP for this ARP function
2316          */
2317         if (card->info.guestlan)
2318                 return -EOPNOTSUPP;
2319         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2320                 return -EOPNOTSUPP;
2321         }
2322         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2323                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2324                                           no_entries);
2325         if (rc) {
2326                 tmp = rc;
2327                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2328                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2329                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2330         }
2331         return rc;
2332 }
2333
2334 static __u32 get_arp_entry_size(struct qeth_card *card,
2335                         struct qeth_arp_query_data *qdata,
2336                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2337 {
2338         __u32 rc;
2339         __u8 is_hsi;
2340
2341         is_hsi = qdata->reply_bits == 5;
2342         if (type->ip == QETHARP_IP_ADDR_V4) {
2343                 QETH_CARD_TEXT(card, 4, "arpev4");
2344                 if (strip_entries) {
2345                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2346                                 sizeof(struct qeth_arp_qi_entry7_short);
2347                 } else {
2348                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2349                                 sizeof(struct qeth_arp_qi_entry7);
2350                 }
2351         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2352                 QETH_CARD_TEXT(card, 4, "arpev6");
2353                 if (strip_entries) {
2354                         rc = is_hsi ?
2355                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2356                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2357                 } else {
2358                         rc = is_hsi ?
2359                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2360                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2361                 }
2362         } else {
2363                 QETH_CARD_TEXT(card, 4, "arpinv");
2364                 rc = 0;
2365         }
2366
2367         return rc;
2368 }
2369
2370 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2371 {
2372         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2373                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2374 }
2375
2376 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2377                 struct qeth_reply *reply, unsigned long data)
2378 {
2379         struct qeth_ipa_cmd *cmd;
2380         struct qeth_arp_query_data *qdata;
2381         struct qeth_arp_query_info *qinfo;
2382         int i;
2383         int e;
2384         int entrybytes_done;
2385         int stripped_bytes;
2386         __u8 do_strip_entries;
2387
2388         QETH_CARD_TEXT(card, 3, "arpquecb");
2389
2390         qinfo = (struct qeth_arp_query_info *) reply->param;
2391         cmd = (struct qeth_ipa_cmd *) data;
2392         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2393         if (cmd->hdr.return_code) {
2394                 QETH_CARD_TEXT(card, 4, "arpcberr");
2395                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2396                 return 0;
2397         }
2398         if (cmd->data.setassparms.hdr.return_code) {
2399                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2400                 QETH_CARD_TEXT(card, 4, "setaperr");
2401                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2402                 return 0;
2403         }
2404         qdata = &cmd->data.setassparms.data.query_arp;
2405         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2406
2407         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2408         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2409         entrybytes_done = 0;
2410         for (e = 0; e < qdata->no_entries; ++e) {
2411                 char *cur_entry;
2412                 __u32 esize;
2413                 struct qeth_arp_entrytype *etype;
2414
2415                 cur_entry = &qdata->data + entrybytes_done;
2416                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2417                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2418                         QETH_CARD_TEXT(card, 4, "pmis");
2419                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2420                         break;
2421                 }
2422                 esize = get_arp_entry_size(card, qdata, etype,
2423                         do_strip_entries);
2424                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2425                 if (!esize)
2426                         break;
2427
2428                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2429                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2430                         cmd->hdr.return_code = -ENOMEM;
2431                         goto out_error;
2432                 }
2433
2434                 memcpy(qinfo->udata + qinfo->udata_offset,
2435                         &qdata->data + entrybytes_done + stripped_bytes,
2436                         esize);
2437                 entrybytes_done += esize + stripped_bytes;
2438                 qinfo->udata_offset += esize;
2439                 ++qinfo->no_entries;
2440         }
2441         /* check if all replies received ... */
2442         if (cmd->data.setassparms.hdr.seq_no <
2443             cmd->data.setassparms.hdr.number_of_replies)
2444                 return 1;
2445         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2446         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2447         /* keep STRIP_ENTRIES flag so the user program can distinguish
2448          * stripped entries from normal ones */
2449         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2450                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2451         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2452         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2453         return 0;
2454 out_error:
2455         i = 0;
2456         memcpy(qinfo->udata, &i, 4);
2457         return 0;
2458 }
2459
2460 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2461                 struct qeth_cmd_buffer *iob, int len,
2462                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2463                         unsigned long),
2464                 void *reply_param)
2465 {
2466         QETH_CARD_TEXT(card, 4, "sendarp");
2467
2468         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2469         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2470                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2471         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2472                                       reply_cb, reply_param);
2473 }
2474
2475 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2476         enum qeth_prot_versions prot,
2477         struct qeth_arp_query_info *qinfo)
2478 {
2479         struct qeth_cmd_buffer *iob;
2480         struct qeth_ipa_cmd *cmd;
2481         int tmp;
2482         int rc;
2483
2484         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2485
2486         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2487                         IPA_CMD_ASS_ARP_QUERY_INFO,
2488                         sizeof(struct qeth_arp_query_data) - sizeof(char),
2489                         prot);
2490         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2491         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2492         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2493         cmd->data.setassparms.data.query_arp.no_entries = 0;
2494         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2495                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2496                            qeth_l3_arp_query_cb, (void *)qinfo);
2497         if (rc) {
2498                 tmp = rc;
2499                 QETH_DBF_MESSAGE(2,
2500                         "Error while querying ARP cache on %s: %s "
2501                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2502                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2503         }
2504
2505         return rc;
2506 }
2507
2508 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2509 {
2510         struct qeth_arp_query_info qinfo = {0, };
2511         int rc;
2512
2513         QETH_CARD_TEXT(card, 3, "arpquery");
2514
2515         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2516                                IPA_ARP_PROCESSING)) {
2517                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2518                 rc = -EOPNOTSUPP;
2519                 goto out;
2520         }
2521         /* get size of userspace buffer and mask_bits -> 6 bytes */
2522         if (copy_from_user(&qinfo, udata, 6)) {
2523                 rc = -EFAULT;
2524                 goto out;
2525         }
2526         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2527         if (!qinfo.udata) {
2528                 rc = -ENOMEM;
2529                 goto out;
2530         }
2531         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2532         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2533         if (rc) {
2534                 if (copy_to_user(udata, qinfo.udata, 4))
2535                         rc = -EFAULT;
2536                         goto free_and_out;
2537         } else {
2538 #ifdef CONFIG_QETH_IPV6
2539                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2540                         /* fails in case of GuestLAN QDIO mode */
2541                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2542                                 &qinfo);
2543                 }
2544 #endif
2545                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2546                         QETH_CARD_TEXT(card, 4, "qactf");
2547                         rc = -EFAULT;
2548                         goto free_and_out;
2549                 }
2550                 QETH_CARD_TEXT_(card, 4, "qacts");
2551         }
2552 free_and_out:
2553         kfree(qinfo.udata);
2554 out:
2555         return rc;
2556 }
2557
2558 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2559                                 struct qeth_arp_cache_entry *entry)
2560 {
2561         struct qeth_cmd_buffer *iob;
2562         char buf[16];
2563         int tmp;
2564         int rc;
2565
2566         QETH_CARD_TEXT(card, 3, "arpadent");
2567
2568         /*
2569          * currently GuestLAN only supports the ARP assist function
2570          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2571          * thus we say EOPNOTSUPP for this ARP function
2572          */
2573         if (card->info.guestlan)
2574                 return -EOPNOTSUPP;
2575         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2576                 return -EOPNOTSUPP;
2577         }
2578
2579         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2580                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2581                                        sizeof(struct qeth_arp_cache_entry),
2582                                        QETH_PROT_IPV4);
2583         rc = qeth_l3_send_setassparms(card, iob,
2584                                    sizeof(struct qeth_arp_cache_entry),
2585                                    (unsigned long) entry,
2586                                    qeth_l3_default_setassparms_cb, NULL);
2587         if (rc) {
2588                 tmp = rc;
2589                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2590                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2591                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2592                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2593         }
2594         return rc;
2595 }
2596
2597 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2598                                 struct qeth_arp_cache_entry *entry)
2599 {
2600         struct qeth_cmd_buffer *iob;
2601         char buf[16] = {0, };
2602         int tmp;
2603         int rc;
2604
2605         QETH_CARD_TEXT(card, 3, "arprment");
2606
2607         /*
2608          * currently GuestLAN only supports the ARP assist function
2609          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2610          * thus we say EOPNOTSUPP for this ARP function
2611          */
2612         if (card->info.guestlan)
2613                 return -EOPNOTSUPP;
2614         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2615                 return -EOPNOTSUPP;
2616         }
2617         memcpy(buf, entry, 12);
2618         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2619                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2620                                        12,
2621                                        QETH_PROT_IPV4);
2622         rc = qeth_l3_send_setassparms(card, iob,
2623                                    12, (unsigned long)buf,
2624                                    qeth_l3_default_setassparms_cb, NULL);
2625         if (rc) {
2626                 tmp = rc;
2627                 memset(buf, 0, 16);
2628                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2629                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2630                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2631                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2632         }
2633         return rc;
2634 }
2635
2636 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2637 {
2638         int rc;
2639         int tmp;
2640
2641         QETH_CARD_TEXT(card, 3, "arpflush");
2642
2643         /*
2644          * currently GuestLAN only supports the ARP assist function
2645          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2646          * thus we say EOPNOTSUPP for this ARP function
2647         */
2648         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2649                 return -EOPNOTSUPP;
2650         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2651                 return -EOPNOTSUPP;
2652         }
2653         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2654                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2655         if (rc) {
2656                 tmp = rc;
2657                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2658                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2659                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2660         }
2661         return rc;
2662 }
2663
2664 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2665 {
2666         struct qeth_card *card = dev->ml_priv;
2667         struct qeth_arp_cache_entry arp_entry;
2668         struct mii_ioctl_data *mii_data;
2669         int rc = 0;
2670
2671         if (!card)
2672                 return -ENODEV;
2673
2674         if ((card->state != CARD_STATE_UP) &&
2675                 (card->state != CARD_STATE_SOFTSETUP))
2676                 return -ENODEV;
2677
2678         switch (cmd) {
2679         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2680                 if (!capable(CAP_NET_ADMIN)) {
2681                         rc = -EPERM;
2682                         break;
2683                 }
2684                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2685                 break;
2686         case SIOC_QETH_ARP_QUERY_INFO:
2687                 if (!capable(CAP_NET_ADMIN)) {
2688                         rc = -EPERM;
2689                         break;
2690                 }
2691                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2692                 break;
2693         case SIOC_QETH_ARP_ADD_ENTRY:
2694                 if (!capable(CAP_NET_ADMIN)) {
2695                         rc = -EPERM;
2696                         break;
2697                 }
2698                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2699                                    sizeof(struct qeth_arp_cache_entry)))
2700                         rc = -EFAULT;
2701                 else
2702                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2703                 break;
2704         case SIOC_QETH_ARP_REMOVE_ENTRY:
2705                 if (!capable(CAP_NET_ADMIN)) {
2706                         rc = -EPERM;
2707                         break;
2708                 }
2709                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2710                                    sizeof(struct qeth_arp_cache_entry)))
2711                         rc = -EFAULT;
2712                 else
2713                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2714                 break;
2715         case SIOC_QETH_ARP_FLUSH_CACHE:
2716                 if (!capable(CAP_NET_ADMIN)) {
2717                         rc = -EPERM;
2718                         break;
2719                 }
2720                 rc = qeth_l3_arp_flush_cache(card);
2721                 break;
2722         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2723                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2724                 break;
2725         case SIOC_QETH_GET_CARD_TYPE:
2726                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2727                      card->info.type == QETH_CARD_TYPE_OSX) &&
2728                     !card->info.guestlan)
2729                         return 1;
2730                 return 0;
2731                 break;
2732         case SIOCGMIIPHY:
2733                 mii_data = if_mii(rq);
2734                 mii_data->phy_id = 0;
2735                 break;
2736         case SIOCGMIIREG:
2737                 mii_data = if_mii(rq);
2738                 if (mii_data->phy_id != 0)
2739                         rc = -EINVAL;
2740                 else
2741                         mii_data->val_out = qeth_mdio_read(dev,
2742                                                         mii_data->phy_id,
2743                                                         mii_data->reg_num);
2744                 break;
2745         default:
2746                 rc = -EOPNOTSUPP;
2747         }
2748         if (rc)
2749                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2750         return rc;
2751 }
2752
2753 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2754 {
2755         int cast_type = RTN_UNSPEC;
2756         struct neighbour *n = NULL;
2757         struct dst_entry *dst;
2758
2759         rcu_read_lock();
2760         dst = skb_dst(skb);
2761         if (dst)
2762                 n = dst_get_neighbour(dst);
2763         if (n) {
2764                 cast_type = n->type;
2765                 rcu_read_unlock();
2766                 if ((cast_type == RTN_BROADCAST) ||
2767                     (cast_type == RTN_MULTICAST) ||
2768                     (cast_type == RTN_ANYCAST))
2769                         return cast_type;
2770                 else
2771                         return RTN_UNSPEC;
2772         }
2773         rcu_read_unlock();
2774
2775         /* try something else */
2776         if (skb->protocol == ETH_P_IPV6)
2777                 return (skb_network_header(skb)[24] == 0xff) ?
2778                                 RTN_MULTICAST : 0;
2779         else if (skb->protocol == ETH_P_IP)
2780                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2781                                 RTN_MULTICAST : 0;
2782         /* ... */
2783         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2784                 return RTN_BROADCAST;
2785         else {
2786                 u16 hdr_mac;
2787
2788                 hdr_mac = *((u16 *)skb->data);
2789                 /* tr multicast? */
2790                 switch (card->info.link_type) {
2791                 case QETH_LINK_TYPE_HSTR:
2792                 case QETH_LINK_TYPE_LANE_TR:
2793                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2794                             (hdr_mac == QETH_TR_MAC_C))
2795                                 return RTN_MULTICAST;
2796                         break;
2797                 /* eth or so multicast? */
2798                 default:
2799                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2800                             (hdr_mac == QETH_ETH_MAC_V6))
2801                                 return RTN_MULTICAST;
2802                 }
2803         }
2804         return cast_type;
2805 }
2806
2807 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2808                 struct qeth_hdr *hdr, struct sk_buff *skb)
2809 {
2810         char daddr[16];
2811         struct af_iucv_trans_hdr *iucv_hdr;
2812
2813         skb_pull(skb, 14);
2814         card->dev->header_ops->create(skb, card->dev, 0,
2815                                       card->dev->dev_addr, card->dev->dev_addr,
2816                                       card->dev->addr_len);
2817         skb_pull(skb, 14);
2818         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2819         memset(hdr, 0, sizeof(struct qeth_hdr));
2820         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2821         hdr->hdr.l3.ext_flags = 0;
2822         hdr->hdr.l3.length = skb->len;
2823         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2824         memset(daddr, 0, sizeof(daddr));
2825         daddr[0] = 0xfe;
2826         daddr[1] = 0x80;
2827         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2828         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2829 }
2830
2831 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2832                 struct sk_buff *skb, int ipv, int cast_type)
2833 {
2834         struct neighbour *n = NULL;
2835         struct dst_entry *dst;
2836
2837         memset(hdr, 0, sizeof(struct qeth_hdr));
2838         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2839         hdr->hdr.l3.ext_flags = 0;
2840
2841         /*
2842          * before we're going to overwrite this location with next hop ip.
2843          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2844          */
2845         if (vlan_tx_tag_present(skb)) {
2846                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2847                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2848                 else
2849                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2850                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2851         }
2852
2853         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2854
2855         rcu_read_lock();
2856         dst = skb_dst(skb);
2857         if (dst)
2858                 n = dst_get_neighbour(dst);
2859         if (ipv == 4) {
2860                 /* IPv4 */
2861                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2862                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2863                 if (n) {
2864                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2865                             *((u32 *) n->primary_key);
2866                 } else {
2867                         /* fill in destination address used in ip header */
2868                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2869                                                         ip_hdr(skb)->daddr;
2870                 }
2871         } else if (ipv == 6) {
2872                 /* IPv6 */
2873                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2874                 if (card->info.type == QETH_CARD_TYPE_IQD)
2875                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2876                 if (n) {
2877                         memcpy(hdr->hdr.l3.dest_addr,
2878                                n->primary_key, 16);
2879                 } else {
2880                         /* fill in destination address used in ip header */
2881                         memcpy(hdr->hdr.l3.dest_addr,
2882                                &ipv6_hdr(skb)->daddr, 16);
2883                 }
2884         } else {
2885                 /* passthrough */
2886                 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2887                         !memcmp(skb->data + sizeof(struct qeth_hdr) +
2888                         sizeof(__u16), skb->dev->broadcast, 6)) {
2889                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2890                                                 QETH_HDR_PASSTHRU;
2891                 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2892                             skb->dev->broadcast, 6)) {
2893                         /* broadcast? */
2894                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2895                                                 QETH_HDR_PASSTHRU;
2896                 } else {
2897                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2898                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2899                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2900                 }
2901         }
2902         rcu_read_unlock();
2903 }
2904
2905 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2906                 struct qeth_hdr *hdr, struct sk_buff *skb)
2907 {
2908         struct iphdr *iph = ip_hdr(skb);
2909
2910         /* tcph->check contains already the pseudo hdr checksum
2911          * so just set the header flags
2912          */
2913         if (iph->protocol == IPPROTO_UDP)
2914                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2915         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2916                 QETH_HDR_EXT_CSUM_HDR_REQ;
2917         iph->check = 0;
2918         if (card->options.performance_stats)
2919                 card->perf_stats.tx_csum++;
2920 }
2921
2922 static void qeth_tso_fill_header(struct qeth_card *card,
2923                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2924 {
2925         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2926         struct tcphdr *tcph = tcp_hdr(skb);
2927         struct iphdr *iph = ip_hdr(skb);
2928         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2929
2930         /*fix header to TSO values ...*/
2931         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2932         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2933         /*set values which are fix for the first approach ...*/
2934         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2935         hdr->ext.imb_hdr_no  = 1;
2936         hdr->ext.hdr_type    = 1;
2937         hdr->ext.hdr_version = 1;
2938         hdr->ext.hdr_len     = 28;
2939         /*insert non-fix values */
2940         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2941         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2942         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2943                                        sizeof(struct qeth_hdr_tso));
2944         tcph->check = 0;
2945         if (skb->protocol == ETH_P_IPV6) {
2946                 ip6h->payload_len = 0;
2947                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2948                                                0, IPPROTO_TCP, 0);
2949         } else {
2950                 /*OSA want us to set these values ...*/
2951                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2952                                          0, IPPROTO_TCP, 0);
2953                 iph->tot_len = 0;
2954                 iph->check = 0;
2955         }
2956 }
2957
2958 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2959 {
2960         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2961                 tcp_hdr(skb)->doff * 4;
2962         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2963         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2964         elements += skb_shinfo(skb)->nr_frags;
2965         return elements;
2966 }
2967
2968 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2969 {
2970         int rc;
2971         u16 *tag;
2972         struct qeth_hdr *hdr = NULL;
2973         int elements_needed = 0;
2974         int elems;
2975         struct qeth_card *card = dev->ml_priv;
2976         struct sk_buff *new_skb = NULL;
2977         int ipv = qeth_get_ip_version(skb);
2978         int cast_type = qeth_l3_get_cast_type(card, skb);
2979         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2980                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2981         int tx_bytes = skb->len;
2982         bool large_send;
2983         int data_offset = -1;
2984         int nr_frags;
2985
2986         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2987              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2988               ((card->options.cq == QETH_CQ_ENABLED) &&
2989                (skb->protocol != ETH_P_AF_IUCV)))) ||
2990             card->options.sniffer)
2991                         goto tx_drop;
2992
2993         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2994                 card->stats.tx_carrier_errors++;
2995                 goto tx_drop;
2996         }
2997
2998         if ((cast_type == RTN_BROADCAST) &&
2999             (card->info.broadcast_capable == 0))
3000                 goto tx_drop;
3001
3002         if (card->options.performance_stats) {
3003                 card->perf_stats.outbound_cnt++;
3004                 card->perf_stats.outbound_start_time = qeth_get_micros();
3005         }
3006
3007         large_send = skb_is_gso(skb);
3008
3009         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
3010             (skb_shinfo(skb)->nr_frags == 0)) {
3011                 new_skb = skb;
3012                 if (new_skb->protocol == ETH_P_AF_IUCV)
3013                         data_offset = 0;
3014                 else
3015                         data_offset = ETH_HLEN;
3016                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3017                 if (!hdr)
3018                         goto tx_drop;
3019                 elements_needed++;
3020         } else {
3021                 /* create a clone with writeable headroom */
3022                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
3023                                         + VLAN_HLEN);
3024                 if (!new_skb)
3025                         goto tx_drop;
3026         }
3027
3028         if (card->info.type == QETH_CARD_TYPE_IQD) {
3029                 if (data_offset < 0)
3030                         skb_pull(new_skb, ETH_HLEN);
3031         } else {
3032                 if (ipv == 4) {
3033                         if (card->dev->type == ARPHRD_IEEE802_TR)
3034                                 skb_pull(new_skb, TR_HLEN);
3035                         else
3036                                 skb_pull(new_skb, ETH_HLEN);
3037                 }
3038
3039                 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
3040                         skb_push(new_skb, VLAN_HLEN);
3041                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
3042                         skb_copy_to_linear_data_offset(new_skb, 4,
3043                                 new_skb->data + 8, 4);
3044                         skb_copy_to_linear_data_offset(new_skb, 8,
3045                                 new_skb->data + 12, 4);
3046                         tag = (u16 *)(new_skb->data + 12);
3047                         *tag = __constant_htons(ETH_P_8021Q);
3048                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
3049                 }
3050         }
3051
3052         netif_stop_queue(dev);
3053
3054         /* fix hardware limitation: as long as we do not have sbal
3055          * chaining we can not send long frag lists
3056          */
3057         if (large_send) {
3058                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3059                         if (skb_linearize(new_skb))
3060                                 goto tx_drop;
3061                         if (card->options.performance_stats)
3062                                 card->perf_stats.tx_lin++;
3063                 }
3064         }
3065
3066         if (large_send && (cast_type == RTN_UNSPEC)) {
3067                 hdr = (struct qeth_hdr *)skb_push(new_skb,
3068                                                 sizeof(struct qeth_hdr_tso));
3069                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3070                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3071                 qeth_tso_fill_header(card, hdr, new_skb);
3072                 elements_needed++;
3073         } else {
3074                 if (data_offset < 0) {
3075                         hdr = (struct qeth_hdr *)skb_push(new_skb,
3076                                                 sizeof(struct qeth_hdr));
3077                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3078                                                 cast_type);
3079                 } else {
3080                         if (new_skb->protocol == ETH_P_AF_IUCV)
3081                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3082                         else {
3083                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3084                                                         cast_type);
3085                                 hdr->hdr.l3.length = new_skb->len - data_offset;
3086                         }
3087                 }
3088
3089                 if (skb->ip_summed == CHECKSUM_PARTIAL)
3090                         qeth_l3_hdr_csum(card, hdr, new_skb);
3091         }
3092
3093         elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3094                                                  elements_needed);
3095         if (!elems) {
3096                 if (data_offset >= 0)
3097                         kmem_cache_free(qeth_core_header_cache, hdr);
3098                 goto tx_drop;
3099         }
3100         elements_needed += elems;
3101         nr_frags = skb_shinfo(new_skb)->nr_frags;
3102
3103         if (card->info.type != QETH_CARD_TYPE_IQD) {
3104                 int len;
3105                 if (large_send)
3106                         len = ((unsigned long)tcp_hdr(new_skb) +
3107                                 tcp_hdr(new_skb)->doff * 4) -
3108                                 (unsigned long)new_skb->data;
3109                 else
3110                         len = sizeof(struct qeth_hdr_layer3);
3111
3112                 if (qeth_hdr_chk_and_bounce(new_skb, len))
3113                         goto tx_drop;
3114                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3115                                          elements_needed);
3116         } else
3117                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3118                                         elements_needed, data_offset, 0);
3119
3120         if (!rc) {
3121                 card->stats.tx_packets++;
3122                 card->stats.tx_bytes += tx_bytes;
3123                 if (new_skb != skb)
3124                         dev_kfree_skb_any(skb);
3125                 if (card->options.performance_stats) {
3126                         if (large_send) {
3127                                 card->perf_stats.large_send_bytes += tx_bytes;
3128                                 card->perf_stats.large_send_cnt++;
3129                         }
3130                         if (nr_frags) {
3131                                 card->perf_stats.sg_skbs_sent++;
3132                                 /* nr_frags + skb->data */
3133                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3134                         }
3135                 }
3136                 rc = NETDEV_TX_OK;
3137         } else {
3138                 if (data_offset >= 0)
3139                         kmem_cache_free(qeth_core_header_cache, hdr);
3140
3141                 if (rc == -EBUSY) {
3142                         if (new_skb != skb)
3143                                 dev_kfree_skb_any(new_skb);
3144                         return NETDEV_TX_BUSY;
3145                 } else
3146                         goto tx_drop;
3147         }
3148
3149         netif_wake_queue(dev);
3150         if (card->options.performance_stats)
3151                 card->perf_stats.outbound_time += qeth_get_micros() -
3152                         card->perf_stats.outbound_start_time;
3153         return rc;
3154
3155 tx_drop:
3156         card->stats.tx_dropped++;
3157         card->stats.tx_errors++;
3158         if ((new_skb != skb) && new_skb)
3159                 dev_kfree_skb_any(new_skb);
3160         dev_kfree_skb_any(skb);
3161         netif_wake_queue(dev);
3162         return NETDEV_TX_OK;
3163 }
3164
3165 static int __qeth_l3_open(struct net_device *dev)
3166 {
3167         struct qeth_card *card = dev->ml_priv;
3168         int rc = 0;
3169
3170         QETH_CARD_TEXT(card, 4, "qethopen");
3171         if (card->state == CARD_STATE_UP)
3172                 return rc;
3173         if (card->state != CARD_STATE_SOFTSETUP)
3174                 return -ENODEV;
3175         card->data.state = CH_STATE_UP;
3176         card->state = CARD_STATE_UP;
3177         netif_start_queue(dev);
3178
3179         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3180                 napi_enable(&card->napi);
3181                 napi_schedule(&card->napi);
3182         } else
3183                 rc = -EIO;
3184         return rc;
3185 }
3186
3187 static int qeth_l3_open(struct net_device *dev)
3188 {
3189         struct qeth_card *card = dev->ml_priv;
3190
3191         QETH_CARD_TEXT(card, 5, "qethope_");
3192         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3193                 QETH_CARD_TEXT(card, 3, "openREC");
3194                 return -ERESTARTSYS;
3195         }
3196         return __qeth_l3_open(dev);
3197 }
3198
3199 static int qeth_l3_stop(struct net_device *dev)
3200 {
3201         struct qeth_card *card = dev->ml_priv;
3202
3203         QETH_CARD_TEXT(card, 4, "qethstop");
3204         netif_tx_disable(dev);
3205         if (card->state == CARD_STATE_UP) {
3206                 card->state = CARD_STATE_SOFTSETUP;
3207                 napi_disable(&card->napi);
3208         }
3209         return 0;
3210 }
3211
3212 static u32 qeth_l3_fix_features(struct net_device *dev, u32 features)
3213 {
3214         struct qeth_card *card = dev->ml_priv;
3215
3216         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3217                 features &= ~NETIF_F_IP_CSUM;
3218         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3219                 features &= ~NETIF_F_TSO;
3220         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3221                 features &= ~NETIF_F_RXCSUM;
3222
3223         return features;
3224 }
3225
3226 static int qeth_l3_set_features(struct net_device *dev, u32 features)
3227 {
3228         struct qeth_card *card = dev->ml_priv;
3229         u32 changed = dev->features ^ features;
3230         int err;
3231
3232         if (!(changed & NETIF_F_RXCSUM))
3233                 return 0;
3234
3235         if (card->state == CARD_STATE_DOWN ||
3236             card->state == CARD_STATE_RECOVER)
3237                 return 0;
3238
3239         err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3240         if (err)
3241                 dev->features = features ^ NETIF_F_RXCSUM;
3242
3243         return err;
3244 }
3245
3246 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3247         .get_link = ethtool_op_get_link,
3248         .get_strings = qeth_core_get_strings,
3249         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3250         .get_sset_count = qeth_core_get_sset_count,
3251         .get_drvinfo = qeth_core_get_drvinfo,
3252         .get_settings = qeth_core_ethtool_get_settings,
3253 };
3254
3255 /*
3256  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3257  * NOARP on the netdevice is no option because it also turns off neighbor
3258  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3259  * arp resolution but we want the hard header (packet socket will work
3260  * e.g. tcpdump)
3261  */
3262 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3263 {
3264         n->nud_state = NUD_NOARP;
3265         memcpy(n->ha, "FAKELL", 6);
3266         n->output = n->ops->connected_output;
3267         return 0;
3268 }
3269
3270 static int
3271 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3272 {
3273         if (np->tbl->family == AF_INET)
3274                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3275
3276         return 0;
3277 }
3278
3279 static const struct net_device_ops qeth_l3_netdev_ops = {
3280         .ndo_open               = qeth_l3_open,
3281         .ndo_stop               = qeth_l3_stop,
3282         .ndo_get_stats          = qeth_get_stats,
3283         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3284         .ndo_validate_addr      = eth_validate_addr,
3285         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3286         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3287         .ndo_change_mtu         = qeth_change_mtu,
3288         .ndo_fix_features       = qeth_l3_fix_features,
3289         .ndo_set_features       = qeth_l3_set_features,
3290         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3291         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3292         .ndo_tx_timeout         = qeth_tx_timeout,
3293 };
3294
3295 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3296         .ndo_open               = qeth_l3_open,
3297         .ndo_stop               = qeth_l3_stop,
3298         .ndo_get_stats          = qeth_get_stats,
3299         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3300         .ndo_validate_addr      = eth_validate_addr,
3301         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3302         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3303         .ndo_change_mtu         = qeth_change_mtu,
3304         .ndo_fix_features       = qeth_l3_fix_features,
3305         .ndo_set_features       = qeth_l3_set_features,
3306         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3307         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3308         .ndo_tx_timeout         = qeth_tx_timeout,
3309         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3310 };
3311
3312 static int qeth_l3_setup_netdev(struct qeth_card *card)
3313 {
3314         if (card->info.type == QETH_CARD_TYPE_OSD ||
3315             card->info.type == QETH_CARD_TYPE_OSX) {
3316                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3317                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3318 #ifdef CONFIG_TR
3319                         card->dev = alloc_trdev(0);
3320 #endif
3321                         if (!card->dev)
3322                                 return -ENODEV;
3323                         card->dev->netdev_ops = &qeth_l3_netdev_ops;
3324                 } else {
3325                         card->dev = alloc_etherdev(0);
3326                         if (!card->dev)
3327                                 return -ENODEV;
3328                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3329
3330                         /*IPv6 address autoconfiguration stuff*/
3331                         qeth_l3_get_unique_id(card);
3332                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3333                                 card->dev->dev_id = card->info.unique_id &
3334                                                          0xffff;
3335                         if (!card->info.guestlan) {
3336                                 card->dev->hw_features = NETIF_F_SG |
3337                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3338                                         NETIF_F_TSO;
3339                                 card->dev->features = NETIF_F_RXCSUM;
3340                         }
3341                 }
3342         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3343                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3344                 if (!card->dev)
3345                         return -ENODEV;
3346                 card->dev->flags |= IFF_NOARP;
3347                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3348                 qeth_l3_iqd_read_initial_mac(card);
3349                 if (card->options.hsuid[0])
3350                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3351         } else
3352                 return -ENODEV;
3353
3354         card->dev->ml_priv = card;
3355         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3356         card->dev->mtu = card->info.initial_mtu;
3357         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3358         card->dev->features |=  NETIF_F_HW_VLAN_TX |
3359                                 NETIF_F_HW_VLAN_RX |
3360                                 NETIF_F_HW_VLAN_FILTER;
3361         card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3362         card->dev->gso_max_size = 15 * PAGE_SIZE;
3363
3364         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3365         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3366         return register_netdev(card->dev);
3367 }
3368
3369 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3370 {
3371         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3372
3373         qeth_l3_create_device_attributes(&gdev->dev);
3374         card->options.layer2 = 0;
3375         card->info.hwtrap = 0;
3376         card->discipline.start_poll = qeth_qdio_start_poll;
3377         card->discipline.input_handler = (qdio_handler_t *)
3378                 qeth_qdio_input_handler;
3379         card->discipline.output_handler = (qdio_handler_t *)
3380                 qeth_qdio_output_handler;
3381         card->discipline.recover = qeth_l3_recover;
3382         return 0;
3383 }
3384
3385 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3386 {
3387         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3388
3389         qeth_l3_remove_device_attributes(&cgdev->dev);
3390
3391         qeth_set_allowed_threads(card, 0, 1);
3392         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3393
3394         if (cgdev->state == CCWGROUP_ONLINE)
3395                 qeth_l3_set_offline(cgdev);
3396
3397         if (card->dev) {
3398                 netif_napi_del(&card->napi);
3399                 unregister_netdev(card->dev);
3400                 card->dev = NULL;
3401         }
3402
3403         qeth_l3_clear_ip_list(card, 0);
3404         qeth_l3_clear_ipato_list(card);
3405         return;
3406 }
3407
3408 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3409 {
3410         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3411         int rc = 0;
3412         enum qeth_card_states recover_flag;
3413
3414         BUG_ON(!card);
3415         mutex_lock(&card->discipline_mutex);
3416         mutex_lock(&card->conf_mutex);
3417         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3418         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3419
3420         recover_flag = card->state;
3421         rc = qeth_core_hardsetup_card(card);
3422         if (rc) {
3423                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3424                 rc = -ENODEV;
3425                 goto out_remove;
3426         }
3427
3428         if (!card->dev && qeth_l3_setup_netdev(card)) {
3429                 rc = -ENODEV;
3430                 goto out_remove;
3431         }
3432
3433         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3434                 if (card->info.hwtrap &&
3435                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3436                         card->info.hwtrap = 0;
3437         } else
3438                 card->info.hwtrap = 0;
3439
3440         card->state = CARD_STATE_HARDSETUP;
3441         memset(&card->rx, 0, sizeof(struct qeth_rx));
3442         qeth_print_status_message(card);
3443
3444         /* softsetup */
3445         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3446
3447         rc = qeth_send_startlan(card);
3448         if (rc) {
3449                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3450                 if (rc == 0xe080) {
3451                         dev_warn(&card->gdev->dev,
3452                                 "The LAN is offline\n");
3453                         card->lan_online = 0;
3454                         goto contin;
3455                 }
3456                 rc = -ENODEV;
3457                 goto out_remove;
3458         } else
3459                 card->lan_online = 1;
3460
3461 contin:
3462         rc = qeth_l3_setadapter_parms(card);
3463         if (rc)
3464                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3465         if (!card->options.sniffer) {
3466                 rc = qeth_l3_start_ipassists(card);
3467                 if (rc)
3468                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3469                 rc = qeth_l3_setrouting_v4(card);
3470                 if (rc)
3471                         QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3472                 rc = qeth_l3_setrouting_v6(card);
3473                 if (rc)
3474                         QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3475         }
3476         netif_tx_disable(card->dev);
3477
3478         rc = qeth_init_qdio_queues(card);
3479         if (rc) {
3480                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3481                 rc = -ENODEV;
3482                 goto out_remove;
3483         }
3484         card->state = CARD_STATE_SOFTSETUP;
3485
3486         qeth_set_allowed_threads(card, 0xffffffff, 0);
3487         qeth_l3_set_ip_addr_list(card);
3488         if (card->lan_online)
3489                 netif_carrier_on(card->dev);
3490         else
3491                 netif_carrier_off(card->dev);
3492         if (recover_flag == CARD_STATE_RECOVER) {
3493                 if (recovery_mode)
3494                         __qeth_l3_open(card->dev);
3495                 else {
3496                         rtnl_lock();
3497                         dev_open(card->dev);
3498                         rtnl_unlock();
3499                 }
3500                 qeth_l3_set_multicast_list(card->dev);
3501         }
3502         /* let user_space know that device is online */
3503         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3504         mutex_unlock(&card->conf_mutex);
3505         mutex_unlock(&card->discipline_mutex);
3506         return 0;
3507 out_remove:
3508         qeth_l3_stop_card(card, 0);
3509         ccw_device_set_offline(CARD_DDEV(card));
3510         ccw_device_set_offline(CARD_WDEV(card));
3511         ccw_device_set_offline(CARD_RDEV(card));
3512         if (recover_flag == CARD_STATE_RECOVER)
3513                 card->state = CARD_STATE_RECOVER;
3514         else
3515                 card->state = CARD_STATE_DOWN;
3516         mutex_unlock(&card->conf_mutex);
3517         mutex_unlock(&card->discipline_mutex);
3518         return rc;
3519 }
3520
3521 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3522 {
3523         return __qeth_l3_set_online(gdev, 0);
3524 }
3525
3526 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3527                         int recovery_mode)
3528 {
3529         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3530         int rc = 0, rc2 = 0, rc3 = 0;
3531         enum qeth_card_states recover_flag;
3532
3533         mutex_lock(&card->discipline_mutex);
3534         mutex_lock(&card->conf_mutex);
3535         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3536         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3537
3538         if (card->dev && netif_carrier_ok(card->dev))
3539                 netif_carrier_off(card->dev);
3540         recover_flag = card->state;
3541         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3542                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3543                 card->info.hwtrap = 1;
3544         }
3545         qeth_l3_stop_card(card, recovery_mode);
3546         rc  = ccw_device_set_offline(CARD_DDEV(card));
3547         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3548         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3549         if (!rc)
3550                 rc = (rc2) ? rc2 : rc3;
3551         if (rc)
3552                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3553         if (recover_flag == CARD_STATE_UP)
3554                 card->state = CARD_STATE_RECOVER;
3555         /* let user_space know that device is offline */
3556         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3557         mutex_unlock(&card->conf_mutex);
3558         mutex_unlock(&card->discipline_mutex);
3559         return 0;
3560 }
3561
3562 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3563 {
3564         return __qeth_l3_set_offline(cgdev, 0);
3565 }
3566
3567 static int qeth_l3_recover(void *ptr)
3568 {
3569         struct qeth_card *card;
3570         int rc = 0;
3571
3572         card = (struct qeth_card *) ptr;
3573         QETH_CARD_TEXT(card, 2, "recover1");
3574         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3575         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3576                 return 0;
3577         QETH_CARD_TEXT(card, 2, "recover2");
3578         dev_warn(&card->gdev->dev,
3579                 "A recovery process has been started for the device\n");
3580         __qeth_l3_set_offline(card->gdev, 1);
3581         rc = __qeth_l3_set_online(card->gdev, 1);
3582         if (!rc)
3583                 dev_info(&card->gdev->dev,
3584                         "Device successfully recovered!\n");
3585         else {
3586                 rtnl_lock();
3587                 dev_close(card->dev);
3588                 rtnl_unlock();
3589                 dev_warn(&card->gdev->dev, "The qeth device driver "
3590                         "failed to recover an error on the device\n");
3591         }
3592         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3593         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3594         return 0;
3595 }
3596
3597 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3598 {
3599         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3600         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3601                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3602         qeth_qdio_clear_card(card, 0);
3603         qeth_clear_qdio_buffers(card);
3604 }
3605
3606 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3607 {
3608         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3609
3610         if (card->dev)
3611                 netif_device_detach(card->dev);
3612         qeth_set_allowed_threads(card, 0, 1);
3613         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3614         if (gdev->state == CCWGROUP_OFFLINE)
3615                 return 0;
3616         if (card->state == CARD_STATE_UP) {
3617                 if (card->info.hwtrap)
3618                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3619                 __qeth_l3_set_offline(card->gdev, 1);
3620         } else
3621                 __qeth_l3_set_offline(card->gdev, 0);
3622         return 0;
3623 }
3624
3625 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3626 {
3627         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3628         int rc = 0;
3629
3630         if (gdev->state == CCWGROUP_OFFLINE)
3631                 goto out;
3632
3633         if (card->state == CARD_STATE_RECOVER) {
3634                 rc = __qeth_l3_set_online(card->gdev, 1);
3635                 if (rc) {
3636                         rtnl_lock();
3637                         dev_close(card->dev);
3638                         rtnl_unlock();
3639                 }
3640         } else
3641                 rc = __qeth_l3_set_online(card->gdev, 0);
3642 out:
3643         qeth_set_allowed_threads(card, 0xffffffff, 0);
3644         if (card->dev)
3645                 netif_device_attach(card->dev);
3646         if (rc)
3647                 dev_warn(&card->gdev->dev, "The qeth device driver "
3648                         "failed to recover an error on the device\n");
3649         return rc;
3650 }
3651
3652 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3653         .probe = qeth_l3_probe_device,
3654         .remove = qeth_l3_remove_device,
3655         .set_online = qeth_l3_set_online,
3656         .set_offline = qeth_l3_set_offline,
3657         .shutdown = qeth_l3_shutdown,
3658         .freeze = qeth_l3_pm_suspend,
3659         .thaw = qeth_l3_pm_resume,
3660         .restore = qeth_l3_pm_resume,
3661 };
3662 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3663
3664 static int qeth_l3_ip_event(struct notifier_block *this,
3665                             unsigned long event, void *ptr)
3666 {
3667         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3668         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3669         struct qeth_ipaddr *addr;
3670         struct qeth_card *card;
3671
3672         if (dev_net(dev) != &init_net)
3673                 return NOTIFY_DONE;
3674
3675         card = qeth_l3_get_card_from_dev(dev);
3676         QETH_CARD_TEXT(card, 3, "ipevent");
3677         if (!card)
3678                 return NOTIFY_DONE;
3679
3680         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3681         if (addr != NULL) {
3682                 addr->u.a4.addr = ifa->ifa_address;
3683                 addr->u.a4.mask = ifa->ifa_mask;
3684                 addr->type = QETH_IP_TYPE_NORMAL;
3685         } else
3686                 goto out;
3687
3688         switch (event) {
3689         case NETDEV_UP:
3690                 if (!qeth_l3_add_ip(card, addr))
3691                         kfree(addr);
3692                 break;
3693         case NETDEV_DOWN:
3694                 if (!qeth_l3_delete_ip(card, addr))
3695                         kfree(addr);
3696                 break;
3697         default:
3698                 break;
3699         }
3700         qeth_l3_set_ip_addr_list(card);
3701 out:
3702         return NOTIFY_DONE;
3703 }
3704
3705 static struct notifier_block qeth_l3_ip_notifier = {
3706         qeth_l3_ip_event,
3707         NULL,
3708 };
3709
3710 #ifdef CONFIG_QETH_IPV6
3711 /**
3712  * IPv6 event handler
3713  */
3714 static int qeth_l3_ip6_event(struct notifier_block *this,
3715                              unsigned long event, void *ptr)
3716 {
3717         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3718         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3719         struct qeth_ipaddr *addr;
3720         struct qeth_card *card;
3721
3722         card = qeth_l3_get_card_from_dev(dev);
3723         if (!card)
3724                 return NOTIFY_DONE;
3725         QETH_CARD_TEXT(card, 3, "ip6event");
3726         if (!qeth_is_supported(card, IPA_IPV6))
3727                 return NOTIFY_DONE;
3728
3729         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3730         if (addr != NULL) {
3731                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3732                 addr->u.a6.pfxlen = ifa->prefix_len;
3733                 addr->type = QETH_IP_TYPE_NORMAL;
3734         } else
3735                 goto out;
3736
3737         switch (event) {
3738         case NETDEV_UP:
3739                 if (!qeth_l3_add_ip(card, addr))
3740                         kfree(addr);
3741                 break;
3742         case NETDEV_DOWN:
3743                 if (!qeth_l3_delete_ip(card, addr))
3744                         kfree(addr);
3745                 break;
3746         default:
3747                 break;
3748         }
3749         qeth_l3_set_ip_addr_list(card);
3750 out:
3751         return NOTIFY_DONE;
3752 }
3753
3754 static struct notifier_block qeth_l3_ip6_notifier = {
3755         qeth_l3_ip6_event,
3756         NULL,
3757 };
3758 #endif
3759
3760 static int qeth_l3_register_notifiers(void)
3761 {
3762         int rc;
3763
3764         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3765         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3766         if (rc)
3767                 return rc;
3768 #ifdef CONFIG_QETH_IPV6
3769         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3770         if (rc) {
3771                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3772                 return rc;
3773         }
3774 #else
3775         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3776 #endif
3777         return 0;
3778 }
3779
3780 static void qeth_l3_unregister_notifiers(void)
3781 {
3782
3783         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3784         BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3785 #ifdef CONFIG_QETH_IPV6
3786         BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3787 #endif /* QETH_IPV6 */
3788 }
3789
3790 static int __init qeth_l3_init(void)
3791 {
3792         int rc = 0;
3793
3794         pr_info("register layer 3 discipline\n");
3795         rc = qeth_l3_register_notifiers();
3796         return rc;
3797 }
3798
3799 static void __exit qeth_l3_exit(void)
3800 {
3801         qeth_l3_unregister_notifiers();
3802         pr_info("unregister layer 3 discipline\n");
3803 }
3804
3805 module_init(qeth_l3_init);
3806 module_exit(qeth_l3_exit);
3807 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3808 MODULE_DESCRIPTION("qeth layer 3 discipline");
3809 MODULE_LICENSE("GPL");