drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/bitops.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/mii.h>
  20 #include <linux/ip.h>
  21 #include <linux/ipv6.h>
  22 #include <linux/inetdevice.h>
  23 #include <linux/igmp.h>
  24 #include <linux/slab.h>
  25 #include <linux/if_vlan.h>
  26
  27 #include <net/ip.h>
  28 #include <net/arp.h>
  29 #include <net/route.h>
  30 #include <net/ip6_fib.h>
  31 #include <net/ip6_checksum.h>
  32 #include <net/iucv/af_iucv.h>
  33
  34 #include "qeth_l3.h"
  35
  36
  37 static int qeth_l3_set_offline(struct ccwgroup_device *);
  38 static int qeth_l3_recover(void *);
  39 static int qeth_l3_stop(struct net_device *);
  40 static void qeth_l3_set_multicast_list(struct net_device *);
  41 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  42 static int qeth_l3_register_addr_entry(struct qeth_card *,
  43                 struct qeth_ipaddr *);
  44 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  45                 struct qeth_ipaddr *);
  46 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  47 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  48
  49 static int qeth_l3_isxdigit(char *buf)
  50 {
  51         while (*buf) {
  52                 if (!isxdigit(*buf++))
  53                         return 0;
  54         }
  55         return 1;
  56 }
  57
  58 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  59 {
  60         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
  61 }
  62
  63 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  64 {
  65         int count = 0, rc = 0;
  66         int in[4];
  67         char c;
  68
  69         rc = sscanf(buf, "%u.%u.%u.%u%c",
  70                     &in[0], &in[1], &in[2], &in[3], &c);
  71         if (rc != 4 && (rc != 5 || c != '\n'))
  72                 return -EINVAL;
  73         for (count = 0; count < 4; count++) {
  74                 if (in[count] > 255)
  75                         return -EINVAL;
  76                 addr[count] = in[count];
  77         }
  78         return 0;
  79 }
  80
  81 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  82 {
  83         sprintf(buf, "%pI6", addr);
  84 }
  85
  86 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  87 {
  88         const char *end, *end_tmp, *start;
  89         __u16 *in;
  90         char num[5];
  91         int num2, cnt, out, found, save_cnt;
  92         unsigned short in_tmp[8] = {0, };
  93
  94         cnt = out = found = save_cnt = num2 = 0;
  95         end = start = buf;
  96         in = (__u16 *) addr;
  97         memset(in, 0, 16);
  98         while (*end) {
  99                 end = strchr(start, ':');
 100                 if (end == NULL) {
 101                         end = buf + strlen(buf);
 102                         end_tmp = strchr(start, '\n');
 103                         if (end_tmp != NULL)
 104                                 end = end_tmp;
 105                         out = 1;
 106                 }
 107                 if ((end - start)) {
 108                         memset(num, 0, 5);
 109                         if ((end - start) > 4)
 110                                 return -EINVAL;
 111                         memcpy(num, start, end - start);
 112                         if (!qeth_l3_isxdigit(num))
 113                                 return -EINVAL;
 114                         sscanf(start, "%x", &num2);
 115                         if (found)
 116                                 in_tmp[save_cnt++] = num2;
 117                         else
 118                                 in[cnt++] = num2;
 119                         if (out)
 120                                 break;
 121                 } else {
 122                         if (found)
 123                                 return -EINVAL;
 124                         found = 1;
 125                 }
 126                 start = ++end;
 127         }
 128         if (cnt + save_cnt > 8)
 129                 return -EINVAL;
 130         cnt = 7;
 131         while (save_cnt)
 132                 in[cnt--] = in_tmp[--save_cnt];
 133         return 0;
 134 }
 135
 136 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 137                                 char *buf)
 138 {
 139         if (proto == QETH_PROT_IPV4)
 140                 qeth_l3_ipaddr4_to_string(addr, buf);
 141         else if (proto == QETH_PROT_IPV6)
 142                 qeth_l3_ipaddr6_to_string(addr, buf);
 143 }
 144
 145 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 146                                 __u8 *addr)
 147 {
 148         if (proto == QETH_PROT_IPV4)
 149                 return qeth_l3_string_to_ipaddr4(buf, addr);
 150         else if (proto == QETH_PROT_IPV6)
 151                 return qeth_l3_string_to_ipaddr6(buf, addr);
 152         else
 153                 return -EINVAL;
 154 }
 155
 156 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 157 {
 158         int i, j;
 159         u8 octet;
 160
 161         for (i = 0; i < len; ++i) {
 162                 octet = addr[i];
 163                 for (j = 7; j >= 0; --j) {
 164                         bits[i*8 + j] = octet & 1;
 165                         octet >>= 1;
 166                 }
 167         }
 168 }
 169
 170 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 171                                                 struct qeth_ipaddr *addr)
 172 {
 173         struct qeth_ipato_entry *ipatoe;
 174         u8 addr_bits[128] = {0, };
 175         u8 ipatoe_bits[128] = {0, };
 176         int rc = 0;
 177
 178         if (!card->ipato.enabled)
 179                 return 0;
 180
 181         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 182                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 183         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 184                 if (addr->proto != ipatoe->proto)
 185                         continue;
 186                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 187                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 188                                           4 : 16);
 189                 if (addr->proto == QETH_PROT_IPV4)
 190                         rc = !memcmp(addr_bits, ipatoe_bits,
 191                                      min(32, ipatoe->mask_bits));
 192                 else
 193                         rc = !memcmp(addr_bits, ipatoe_bits,
 194                                      min(128, ipatoe->mask_bits));
 195                 if (rc)
 196                         break;
 197         }
 198         /* invert? */
 199         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 200                 rc = !rc;
 201         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 202                 rc = !rc;
 203
 204         return rc;
 205 }
 206
 207 /*
 208  * Add IP to be added to todo list. If there is already an "add todo"
 209  * in this list we just incremenent the reference count.
 210  * Returns 0 if we  just incremented reference count.
 211  */
 212 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
 213                                         struct qeth_ipaddr *addr, int add)
 214 {
 215         struct qeth_ipaddr *tmp, *t;
 216         int found = 0;
 217
 218         if (card->options.sniffer)
 219                 return 0;
 220         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
 221                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
 222                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
 223                         return 0;
 224                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
 225                     (addr->proto       == QETH_PROT_IPV4)     &&
 226                     (tmp->type         == addr->type)         &&
 227                     (tmp->is_multicast == addr->is_multicast) &&
 228                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
 229                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
 230                         found = 1;
 231                         break;
 232                 }
 233                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
 234                     (addr->proto       == QETH_PROT_IPV6)      &&
 235                     (tmp->type         == addr->type)          &&
 236                     (tmp->is_multicast == addr->is_multicast)  &&
 237                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
 238                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 239                             sizeof(struct in6_addr)) == 0)) {
 240                         found = 1;
 241                         break;
 242                 }
 243         }
 244         if (found) {
 245                 if (addr->users != 0)
 246                         tmp->users += addr->users;
 247                 else
 248                         tmp->users += add ? 1 : -1;
 249                 if (tmp->users == 0) {
 250                         list_del(&tmp->entry);
 251                         kfree(tmp);
 252                 }
 253                 return 0;
 254         } else {
 255                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
 256                         list_add(&addr->entry, card->ip_tbd_list);
 257                 else {
 258                         if (addr->users == 0)
 259                                 addr->users += add ? 1 : -1;
 260                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
 261                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 262                                 QETH_CARD_TEXT(card, 2, "tkovaddr");
 263                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 264                         }
 265                         list_add_tail(&addr->entry, card->ip_tbd_list);
 266                 }
 267                 return 1;
 268         }
 269 }
 270
 271 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 272 {
 273         unsigned long flags;
 274         int rc = 0;
 275
 276         QETH_CARD_TEXT(card, 4, "delip");
 277
 278         if (addr->proto == QETH_PROT_IPV4)
 279                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 280         else {
 281                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 282                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 283         }
 284         spin_lock_irqsave(&card->ip_lock, flags);
 285         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
 286         spin_unlock_irqrestore(&card->ip_lock, flags);
 287         return rc;
 288 }
 289
 290 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 291 {
 292         unsigned long flags;
 293         int rc = 0;
 294
 295         QETH_CARD_TEXT(card, 4, "addip");
 296         if (addr->proto == QETH_PROT_IPV4)
 297                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 298         else {
 299                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 300                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 301         }
 302         spin_lock_irqsave(&card->ip_lock, flags);
 303         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
 304         spin_unlock_irqrestore(&card->ip_lock, flags);
 305         return rc;
 306 }
 307
 308
 309 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 310                                 enum qeth_prot_versions prot)
 311 {
 312         struct qeth_ipaddr *addr;
 313
 314         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 315         if (addr == NULL) {
 316                 return NULL;
 317         }
 318         addr->type = QETH_IP_TYPE_NORMAL;
 319         addr->proto = prot;
 320         return addr;
 321 }
 322
 323 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
 324 {
 325         struct qeth_ipaddr *iptodo;
 326         unsigned long flags;
 327
 328         QETH_CARD_TEXT(card, 4, "delmc");
 329         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
 330         if (!iptodo) {
 331                 QETH_CARD_TEXT(card, 2, "dmcnomem");
 332                 return;
 333         }
 334         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
 335         spin_lock_irqsave(&card->ip_lock, flags);
 336         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
 337                 kfree(iptodo);
 338         spin_unlock_irqrestore(&card->ip_lock, flags);
 339 }
 340
 341 /*
 342  * Add/remove address to/from card's ip list, i.e. try to add or remove
 343  * reference to/from an IP address that is already registered on the card.
 344  * Returns:
 345  *      0  address was on card and its reference count has been adjusted,
 346  *         but is still > 0, so nothing has to be done
 347  *         also returns 0 if card was not on card and the todo was to delete
 348  *         the address -> there is also nothing to be done
 349  *      1  address was not on card and the todo is to add it to the card's ip
 350  *         list
 351  *      -1 address was on card and its reference count has been decremented
 352  *         to <= 0 by the todo -> address must be removed from card
 353  */
 354 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
 355                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
 356 {
 357         struct qeth_ipaddr *addr;
 358         int found = 0;
 359
 360         list_for_each_entry(addr, &card->ip_list, entry) {
 361                 if ((addr->proto == QETH_PROT_IPV4) &&
 362                     (todo->proto == QETH_PROT_IPV4) &&
 363                     (addr->type == todo->type) &&
 364                     (addr->u.a4.addr == todo->u.a4.addr) &&
 365                     (addr->u.a4.mask == todo->u.a4.mask)) {
 366                         found = 1;
 367                         break;
 368                 }
 369                 if ((addr->proto == QETH_PROT_IPV6) &&
 370                     (todo->proto == QETH_PROT_IPV6) &&
 371                     (addr->type == todo->type) &&
 372                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
 373                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
 374                             sizeof(struct in6_addr)) == 0)) {
 375                         found = 1;
 376                         break;
 377                 }
 378         }
 379         if (found) {
 380                 addr->users += todo->users;
 381                 if (addr->users <= 0) {
 382                         *__addr = addr;
 383                         return -1;
 384                 } else {
 385                         /* for VIPA and RXIP limit refcount to 1 */
 386                         if (addr->type != QETH_IP_TYPE_NORMAL)
 387                                 addr->users = 1;
 388                         return 0;
 389                 }
 390         }
 391         if (todo->users > 0) {
 392                 /* for VIPA and RXIP limit refcount to 1 */
 393                 if (todo->type != QETH_IP_TYPE_NORMAL)
 394                         todo->users = 1;
 395                 return 1;
 396         } else
 397                 return 0;
 398 }
 399
 400 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
 401                                         unsigned long *flags)
 402 {
 403         struct list_head fail_list;
 404         struct qeth_ipaddr *addr, *tmp;
 405         int rc;
 406
 407         INIT_LIST_HEAD(&fail_list);
 408 again:
 409         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
 410                 if (addr->is_multicast) {
 411                         list_del(&addr->entry);
 412                         spin_unlock_irqrestore(&card->ip_lock, *flags);
 413                         rc = qeth_l3_deregister_addr_entry(card, addr);
 414                         spin_lock_irqsave(&card->ip_lock, *flags);
 415                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
 416                                 kfree(addr);
 417                         else
 418                                 list_add_tail(&addr->entry, &fail_list);
 419                         goto again;
 420                 }
 421         }
 422         list_splice(&fail_list, &card->ip_list);
 423 }
 424
 425 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
 426 {
 427         struct list_head *tbd_list;
 428         struct qeth_ipaddr *todo, *addr;
 429         unsigned long flags;
 430         int rc;
 431
 432         QETH_CARD_TEXT(card, 2, "sdiplist");
 433         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
 434
 435         if ((card->state != CARD_STATE_UP &&
 436              card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
 437                 return;
 438         }
 439
 440         spin_lock_irqsave(&card->ip_lock, flags);
 441         tbd_list = card->ip_tbd_list;
 442         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
 443         if (!card->ip_tbd_list) {
 444                 QETH_CARD_TEXT(card, 0, "silnomem");
 445                 card->ip_tbd_list = tbd_list;
 446                 spin_unlock_irqrestore(&card->ip_lock, flags);
 447                 return;
 448         } else
 449                 INIT_LIST_HEAD(card->ip_tbd_list);
 450
 451         while (!list_empty(tbd_list)) {
 452                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
 453                 list_del(&todo->entry);
 454                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
 455                         __qeth_l3_delete_all_mc(card, &flags);
 456                         kfree(todo);
 457                         continue;
 458                 }
 459                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
 460                 if (rc == 0) {
 461                         /* nothing to be done; only adjusted refcount */
 462                         kfree(todo);
 463                 } else if (rc == 1) {
 464                         /* new entry to be added to on-card list */
 465                         spin_unlock_irqrestore(&card->ip_lock, flags);
 466                         rc = qeth_l3_register_addr_entry(card, todo);
 467                         spin_lock_irqsave(&card->ip_lock, flags);
 468                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
 469                                 list_add_tail(&todo->entry, &card->ip_list);
 470                         else
 471                                 kfree(todo);
 472                 } else if (rc == -1) {
 473                         /* on-card entry to be removed */
 474                         list_del_init(&addr->entry);
 475                         spin_unlock_irqrestore(&card->ip_lock, flags);
 476                         rc = qeth_l3_deregister_addr_entry(card, addr);
 477                         spin_lock_irqsave(&card->ip_lock, flags);
 478                         if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
 479                                 kfree(addr);
 480                         else
 481                                 list_add_tail(&addr->entry, &card->ip_list);
 482                         kfree(todo);
 483                 }
 484         }
 485         spin_unlock_irqrestore(&card->ip_lock, flags);
 486         kfree(tbd_list);
 487 }
 488
 489 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
 490 {
 491         struct qeth_ipaddr *addr, *tmp;
 492         unsigned long flags;
 493
 494         QETH_CARD_TEXT(card, 4, "clearip");
 495         if (recover && card->options.sniffer)
 496                 return;
 497         spin_lock_irqsave(&card->ip_lock, flags);
 498         /* clear todo list */
 499         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
 500                 list_del(&addr->entry);
 501                 kfree(addr);
 502         }
 503
 504         while (!list_empty(&card->ip_list)) {
 505                 addr = list_entry(card->ip_list.next,
 506                                   struct qeth_ipaddr, entry);
 507                 list_del_init(&addr->entry);
 508                 if (!recover || addr->is_multicast) {
 509                         kfree(addr);
 510                         continue;
 511                 }
 512                 list_add_tail(&addr->entry, card->ip_tbd_list);
 513         }
 514         spin_unlock_irqrestore(&card->ip_lock, flags);
 515 }
 516
 517 static int qeth_l3_address_exists_in_list(struct list_head *list,
 518                 struct qeth_ipaddr *addr, int same_type)
 519 {
 520         struct qeth_ipaddr *tmp;
 521
 522         list_for_each_entry(tmp, list, entry) {
 523                 if ((tmp->proto == QETH_PROT_IPV4) &&
 524                     (addr->proto == QETH_PROT_IPV4) &&
 525                     ((same_type && (tmp->type == addr->type)) ||
 526                     (!same_type && (tmp->type != addr->type))) &&
 527                     (tmp->u.a4.addr == addr->u.a4.addr))
 528                         return 1;
 529
 530                 if ((tmp->proto == QETH_PROT_IPV6) &&
 531                     (addr->proto == QETH_PROT_IPV6) &&
 532                     ((same_type && (tmp->type == addr->type)) ||
 533                     (!same_type && (tmp->type != addr->type))) &&
 534                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 535                             sizeof(struct in6_addr)) == 0))
 536                         return 1;
 537
 538         }
 539         return 0;
 540 }
 541
 542 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 543                         struct qeth_ipaddr *addr, int ipacmd)
 544 {
 545         int rc;
 546         struct qeth_cmd_buffer *iob;
 547         struct qeth_ipa_cmd *cmd;
 548
 549         QETH_CARD_TEXT(card, 4, "setdelmc");
 550
 551         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 552         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 553         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 554         if (addr->proto == QETH_PROT_IPV6)
 555                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 556                        sizeof(struct in6_addr));
 557         else
 558                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 559
 560         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 561
 562         return rc;
 563 }
 564
 565 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 566 {
 567         int i, j;
 568         for (i = 0; i < 16; i++) {
 569                 j = (len) - (i * 8);
 570                 if (j >= 8)
 571                         netmask[i] = 0xff;
 572                 else if (j > 0)
 573                         netmask[i] = (u8)(0xFF00 >> j);
 574                 else
 575                         netmask[i] = 0;
 576         }
 577 }
 578
 579 static int qeth_l3_send_setdelip(struct qeth_card *card,
 580                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 581 {
 582         int rc;
 583         struct qeth_cmd_buffer *iob;
 584         struct qeth_ipa_cmd *cmd;
 585         __u8 netmask[16];
 586
 587         QETH_CARD_TEXT(card, 4, "setdelip");
 588         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 589
 590         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 591         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 592         if (addr->proto == QETH_PROT_IPV6) {
 593                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 594                        sizeof(struct in6_addr));
 595                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 596                 memcpy(cmd->data.setdelip6.mask, netmask,
 597                        sizeof(struct in6_addr));
 598                 cmd->data.setdelip6.flags = flags;
 599         } else {
 600                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 601                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 602                 cmd->data.setdelip4.flags = flags;
 603         }
 604
 605         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 606
 607         return rc;
 608 }
 609
 610 static int qeth_l3_send_setrouting(struct qeth_card *card,
 611         enum qeth_routing_types type, enum qeth_prot_versions prot)
 612 {
 613         int rc;
 614         struct qeth_ipa_cmd *cmd;
 615         struct qeth_cmd_buffer *iob;
 616
 617         QETH_CARD_TEXT(card, 4, "setroutg");
 618         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 619         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 620         cmd->data.setrtg.type = (type);
 621         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 622
 623         return rc;
 624 }
 625
 626 static void qeth_l3_correct_routing_type(struct qeth_card *card,
 627                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 628 {
 629         if (card->info.type == QETH_CARD_TYPE_IQD) {
 630                 switch (*type) {
 631                 case NO_ROUTER:
 632                 case PRIMARY_CONNECTOR:
 633                 case SECONDARY_CONNECTOR:
 634                 case MULTICAST_ROUTER:
 635                         return;
 636                 default:
 637                         goto out_inval;
 638                 }
 639         } else {
 640                 switch (*type) {
 641                 case NO_ROUTER:
 642                 case PRIMARY_ROUTER:
 643                 case SECONDARY_ROUTER:
 644                         return;
 645                 case MULTICAST_ROUTER:
 646                         if (qeth_is_ipafunc_supported(card, prot,
 647                                                       IPA_OSA_MC_ROUTER))
 648                                 return;
 649                 default:
 650                         goto out_inval;
 651                 }
 652         }
 653 out_inval:
 654         *type = NO_ROUTER;
 655 }
 656
 657 int qeth_l3_setrouting_v4(struct qeth_card *card)
 658 {
 659         int rc;
 660
 661         QETH_CARD_TEXT(card, 3, "setrtg4");
 662
 663         qeth_l3_correct_routing_type(card, &card->options.route4.type,
 664                                   QETH_PROT_IPV4);
 665
 666         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 667                                   QETH_PROT_IPV4);
 668         if (rc) {
 669                 card->options.route4.type = NO_ROUTER;
 670                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 671                         " on %s. Type set to 'no router'.\n", rc,
 672                         QETH_CARD_IFNAME(card));
 673         }
 674         return rc;
 675 }
 676
 677 int qeth_l3_setrouting_v6(struct qeth_card *card)
 678 {
 679         int rc = 0;
 680
 681         QETH_CARD_TEXT(card, 3, "setrtg6");
 682 #ifdef CONFIG_QETH_IPV6
 683
 684         if (!qeth_is_supported(card, IPA_IPV6))
 685                 return 0;
 686         qeth_l3_correct_routing_type(card, &card->options.route6.type,
 687                                   QETH_PROT_IPV6);
 688
 689         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 690                                   QETH_PROT_IPV6);
 691         if (rc) {
 692                 card->options.route6.type = NO_ROUTER;
 693                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 694                         " on %s. Type set to 'no router'.\n", rc,
 695                         QETH_CARD_IFNAME(card));
 696         }
 697 #endif
 698         return rc;
 699 }
 700
 701 /*
 702  * IP address takeover related functions
 703  */
 704 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 705 {
 706
 707         struct qeth_ipato_entry *ipatoe, *tmp;
 708         unsigned long flags;
 709
 710         spin_lock_irqsave(&card->ip_lock, flags);
 711         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 712                 list_del(&ipatoe->entry);
 713                 kfree(ipatoe);
 714         }
 715         spin_unlock_irqrestore(&card->ip_lock, flags);
 716 }
 717
 718 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 719                                 struct qeth_ipato_entry *new)
 720 {
 721         struct qeth_ipato_entry *ipatoe;
 722         unsigned long flags;
 723         int rc = 0;
 724
 725         QETH_CARD_TEXT(card, 2, "addipato");
 726         spin_lock_irqsave(&card->ip_lock, flags);
 727         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 728                 if (ipatoe->proto != new->proto)
 729                         continue;
 730                 if (!memcmp(ipatoe->addr, new->addr,
 731                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 732                     (ipatoe->mask_bits == new->mask_bits)) {
 733                         rc = -EEXIST;
 734                         break;
 735                 }
 736         }
 737         if (!rc)
 738                 list_add_tail(&new->entry, &card->ipato.entries);
 739
 740         spin_unlock_irqrestore(&card->ip_lock, flags);
 741         return rc;
 742 }
 743
 744 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 745                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 746 {
 747         struct qeth_ipato_entry *ipatoe, *tmp;
 748         unsigned long flags;
 749
 750         QETH_CARD_TEXT(card, 2, "delipato");
 751         spin_lock_irqsave(&card->ip_lock, flags);
 752         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 753                 if (ipatoe->proto != proto)
 754                         continue;
 755                 if (!memcmp(ipatoe->addr, addr,
 756                             (proto == QETH_PROT_IPV4)? 4:16) &&
 757                     (ipatoe->mask_bits == mask_bits)) {
 758                         list_del(&ipatoe->entry);
 759                         kfree(ipatoe);
 760                 }
 761         }
 762         spin_unlock_irqrestore(&card->ip_lock, flags);
 763 }
 764
 765 /*
 766  * VIPA related functions
 767  */
 768 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 769               const u8 *addr)
 770 {
 771         struct qeth_ipaddr *ipaddr;
 772         unsigned long flags;
 773         int rc = 0;
 774
 775         ipaddr = qeth_l3_get_addr_buffer(proto);
 776         if (ipaddr) {
 777                 if (proto == QETH_PROT_IPV4) {
 778                         QETH_CARD_TEXT(card, 2, "addvipa4");
 779                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 780                         ipaddr->u.a4.mask = 0;
 781                 } else if (proto == QETH_PROT_IPV6) {
 782                         QETH_CARD_TEXT(card, 2, "addvipa6");
 783                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 784                         ipaddr->u.a6.pfxlen = 0;
 785                 }
 786                 ipaddr->type = QETH_IP_TYPE_VIPA;
 787                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 788                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 789         } else
 790                 return -ENOMEM;
 791         spin_lock_irqsave(&card->ip_lock, flags);
 792         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 793             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 794                 rc = -EEXIST;
 795         spin_unlock_irqrestore(&card->ip_lock, flags);
 796         if (rc) {
 797                 kfree(ipaddr);
 798                 return rc;
 799         }
 800         if (!qeth_l3_add_ip(card, ipaddr))
 801                 kfree(ipaddr);
 802         qeth_l3_set_ip_addr_list(card);
 803         return rc;
 804 }
 805
 806 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 807               const u8 *addr)
 808 {
 809         struct qeth_ipaddr *ipaddr;
 810
 811         ipaddr = qeth_l3_get_addr_buffer(proto);
 812         if (ipaddr) {
 813                 if (proto == QETH_PROT_IPV4) {
 814                         QETH_CARD_TEXT(card, 2, "delvipa4");
 815                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 816                         ipaddr->u.a4.mask = 0;
 817                 } else if (proto == QETH_PROT_IPV6) {
 818                         QETH_CARD_TEXT(card, 2, "delvipa6");
 819                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 820                         ipaddr->u.a6.pfxlen = 0;
 821                 }
 822                 ipaddr->type = QETH_IP_TYPE_VIPA;
 823         } else
 824                 return;
 825         if (!qeth_l3_delete_ip(card, ipaddr))
 826                 kfree(ipaddr);
 827         qeth_l3_set_ip_addr_list(card);
 828 }
 829
 830 /*
 831  * proxy ARP related functions
 832  */
 833 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 834               const u8 *addr)
 835 {
 836         struct qeth_ipaddr *ipaddr;
 837         unsigned long flags;
 838         int rc = 0;
 839
 840         ipaddr = qeth_l3_get_addr_buffer(proto);
 841         if (ipaddr) {
 842                 if (proto == QETH_PROT_IPV4) {
 843                         QETH_CARD_TEXT(card, 2, "addrxip4");
 844                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 845                         ipaddr->u.a4.mask = 0;
 846                 } else if (proto == QETH_PROT_IPV6) {
 847                         QETH_CARD_TEXT(card, 2, "addrxip6");
 848                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 849                         ipaddr->u.a6.pfxlen = 0;
 850                 }
 851                 ipaddr->type = QETH_IP_TYPE_RXIP;
 852                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 853                 ipaddr->del_flags = 0;
 854         } else
 855                 return -ENOMEM;
 856         spin_lock_irqsave(&card->ip_lock, flags);
 857         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 858             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 859                 rc = -EEXIST;
 860         spin_unlock_irqrestore(&card->ip_lock, flags);
 861         if (rc) {
 862                 kfree(ipaddr);
 863                 return rc;
 864         }
 865         if (!qeth_l3_add_ip(card, ipaddr))
 866                 kfree(ipaddr);
 867         qeth_l3_set_ip_addr_list(card);
 868         return 0;
 869 }
 870
 871 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 872                         const u8 *addr)
 873 {
 874         struct qeth_ipaddr *ipaddr;
 875
 876         ipaddr = qeth_l3_get_addr_buffer(proto);
 877         if (ipaddr) {
 878                 if (proto == QETH_PROT_IPV4) {
 879                         QETH_CARD_TEXT(card, 2, "addrxip4");
 880                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 881                         ipaddr->u.a4.mask = 0;
 882                 } else if (proto == QETH_PROT_IPV6) {
 883                         QETH_CARD_TEXT(card, 2, "addrxip6");
 884                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 885                         ipaddr->u.a6.pfxlen = 0;
 886                 }
 887                 ipaddr->type = QETH_IP_TYPE_RXIP;
 888         } else
 889                 return;
 890         if (!qeth_l3_delete_ip(card, ipaddr))
 891                 kfree(ipaddr);
 892         qeth_l3_set_ip_addr_list(card);
 893 }
 894
 895 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 896                                 struct qeth_ipaddr *addr)
 897 {
 898         char buf[50];
 899         int rc = 0;
 900         int cnt = 3;
 901
 902         if (addr->proto == QETH_PROT_IPV4) {
 903                 QETH_CARD_TEXT(card, 2, "setaddr4");
 904                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 905         } else if (addr->proto == QETH_PROT_IPV6) {
 906                 QETH_CARD_TEXT(card, 2, "setaddr6");
 907                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 908                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 909         } else {
 910                 QETH_CARD_TEXT(card, 2, "setaddr?");
 911                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 912         }
 913         do {
 914                 if (addr->is_multicast)
 915                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 916                 else
 917                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 918                                         addr->set_flags);
 919                 if (rc)
 920                         QETH_CARD_TEXT(card, 2, "failed");
 921         } while ((--cnt > 0) && rc);
 922         if (rc) {
 923                 QETH_CARD_TEXT(card, 2, "FAILED");
 924                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 925                 dev_warn(&card->gdev->dev,
 926                         "Registering IP address %s failed\n", buf);
 927         }
 928         return rc;
 929 }
 930
 931 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 932                                                 struct qeth_ipaddr *addr)
 933 {
 934         int rc = 0;
 935
 936         if (addr->proto == QETH_PROT_IPV4) {
 937                 QETH_CARD_TEXT(card, 2, "deladdr4");
 938                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 939         } else if (addr->proto == QETH_PROT_IPV6) {
 940                 QETH_CARD_TEXT(card, 2, "deladdr6");
 941                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 942                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 943         } else {
 944                 QETH_CARD_TEXT(card, 2, "deladdr?");
 945                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 946         }
 947         if (addr->is_multicast)
 948                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 949         else
 950                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 951                                         addr->del_flags);
 952         if (rc)
 953                 QETH_CARD_TEXT(card, 2, "failed");
 954
 955         return rc;
 956 }
 957
 958 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 959 {
 960         if (cast_type == RTN_MULTICAST)
 961                 return QETH_CAST_MULTICAST;
 962         if (cast_type == RTN_BROADCAST)
 963                 return QETH_CAST_BROADCAST;
 964         return QETH_CAST_UNICAST;
 965 }
 966
 967 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 968 {
 969         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 970         if (cast_type == RTN_MULTICAST)
 971                 return ct | QETH_CAST_MULTICAST;
 972         if (cast_type == RTN_ANYCAST)
 973                 return ct | QETH_CAST_ANYCAST;
 974         if (cast_type == RTN_BROADCAST)
 975                 return ct | QETH_CAST_BROADCAST;
 976         return ct | QETH_CAST_UNICAST;
 977 }
 978
 979 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 980 {
 981         int rc;
 982
 983         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 984
 985         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 986                 dev_info(&card->gdev->dev,
 987                         "set adapter parameters not supported.\n");
 988                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 989                 return 0;
 990         }
 991         rc = qeth_query_setadapterparms(card);
 992         if (rc) {
 993                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
 994                         "0x%x\n", dev_name(&card->gdev->dev), rc);
 995                 return rc;
 996         }
 997         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 998                 rc = qeth_setadpparms_change_macaddr(card);
 999                 if (rc)
1000                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1001                                 " address failed\n");
1002         }
1003
1004         return rc;
1005 }
1006
1007 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1008                         struct qeth_reply *reply, unsigned long data)
1009 {
1010         struct qeth_ipa_cmd *cmd;
1011
1012         QETH_CARD_TEXT(card, 4, "defadpcb");
1013
1014         cmd = (struct qeth_ipa_cmd *) data;
1015         if (cmd->hdr.return_code == 0) {
1016                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1017                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1018                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1019                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1020                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1021         }
1022         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1023             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1024                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1025                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1026         }
1027         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1028             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1029                 card->info.tx_csum_mask =
1030                         cmd->data.setassparms.data.flags_32bit;
1031                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1032         }
1033
1034         return 0;
1035 }
1036
1037 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1038         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1039         __u16 len, enum qeth_prot_versions prot)
1040 {
1041         struct qeth_cmd_buffer *iob;
1042         struct qeth_ipa_cmd *cmd;
1043
1044         QETH_CARD_TEXT(card, 4, "getasscm");
1045         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1046
1047         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1048         cmd->data.setassparms.hdr.assist_no = ipa_func;
1049         cmd->data.setassparms.hdr.length = 8 + len;
1050         cmd->data.setassparms.hdr.command_code = cmd_code;
1051         cmd->data.setassparms.hdr.return_code = 0;
1052         cmd->data.setassparms.hdr.seq_no = 0;
1053
1054         return iob;
1055 }
1056
1057 static int qeth_l3_send_setassparms(struct qeth_card *card,
1058         struct qeth_cmd_buffer *iob, __u16 len, long data,
1059         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1060                 unsigned long),
1061         void *reply_param)
1062 {
1063         int rc;
1064         struct qeth_ipa_cmd *cmd;
1065
1066         QETH_CARD_TEXT(card, 4, "sendassp");
1067
1068         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1069         if (len <= sizeof(__u32))
1070                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1071         else   /* (len > sizeof(__u32)) */
1072                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1073
1074         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1075         return rc;
1076 }
1077
1078 #ifdef CONFIG_QETH_IPV6
1079 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1080                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1081 {
1082         int rc;
1083         struct qeth_cmd_buffer *iob;
1084
1085         QETH_CARD_TEXT(card, 4, "simassp6");
1086         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1087                                        0, QETH_PROT_IPV6);
1088         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1089                                    qeth_l3_default_setassparms_cb, NULL);
1090         return rc;
1091 }
1092 #endif
1093
1094 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1095                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1096 {
1097         int rc;
1098         int length = 0;
1099         struct qeth_cmd_buffer *iob;
1100
1101         QETH_CARD_TEXT(card, 4, "simassp4");
1102         if (data)
1103                 length = sizeof(__u32);
1104         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1105                                        length, QETH_PROT_IPV4);
1106         rc = qeth_l3_send_setassparms(card, iob, length, data,
1107                                    qeth_l3_default_setassparms_cb, NULL);
1108         return rc;
1109 }
1110
1111 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1112 {
1113         int rc;
1114
1115         QETH_CARD_TEXT(card, 3, "ipaarp");
1116
1117         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1118                 dev_info(&card->gdev->dev,
1119                         "ARP processing not supported on %s!\n",
1120                         QETH_CARD_IFNAME(card));
1121                 return 0;
1122         }
1123         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1124                                         IPA_CMD_ASS_START, 0);
1125         if (rc) {
1126                 dev_warn(&card->gdev->dev,
1127                         "Starting ARP processing support for %s failed\n",
1128                         QETH_CARD_IFNAME(card));
1129         }
1130         return rc;
1131 }
1132
1133 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1134 {
1135         int rc;
1136
1137         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1138
1139         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1140                 dev_info(&card->gdev->dev,
1141                         "Hardware IP fragmentation not supported on %s\n",
1142                         QETH_CARD_IFNAME(card));
1143                 return  -EOPNOTSUPP;
1144         }
1145
1146         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1147                                           IPA_CMD_ASS_START, 0);
1148         if (rc) {
1149                 dev_warn(&card->gdev->dev,
1150                         "Starting IP fragmentation support for %s failed\n",
1151                         QETH_CARD_IFNAME(card));
1152         } else
1153                 dev_info(&card->gdev->dev,
1154                         "Hardware IP fragmentation enabled \n");
1155         return rc;
1156 }
1157
1158 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1159 {
1160         int rc;
1161
1162         QETH_CARD_TEXT(card, 3, "stsrcmac");
1163
1164         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1165                 dev_info(&card->gdev->dev,
1166                         "Inbound source MAC-address not supported on %s\n",
1167                         QETH_CARD_IFNAME(card));
1168                 return -EOPNOTSUPP;
1169         }
1170
1171         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1172                                           IPA_CMD_ASS_START, 0);
1173         if (rc)
1174                 dev_warn(&card->gdev->dev,
1175                         "Starting source MAC-address support for %s failed\n",
1176                         QETH_CARD_IFNAME(card));
1177         return rc;
1178 }
1179
1180 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1181 {
1182         int rc = 0;
1183
1184         QETH_CARD_TEXT(card, 3, "strtvlan");
1185
1186         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1187                 dev_info(&card->gdev->dev,
1188                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1189                 return -EOPNOTSUPP;
1190         }
1191
1192         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1193                                           IPA_CMD_ASS_START, 0);
1194         if (rc) {
1195                 dev_warn(&card->gdev->dev,
1196                         "Starting VLAN support for %s failed\n",
1197                         QETH_CARD_IFNAME(card));
1198         } else {
1199                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1200         }
1201         return rc;
1202 }
1203
1204 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1205 {
1206         int rc;
1207
1208         QETH_CARD_TEXT(card, 3, "stmcast");
1209
1210         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1211                 dev_info(&card->gdev->dev,
1212                         "Multicast not supported on %s\n",
1213                         QETH_CARD_IFNAME(card));
1214                 return -EOPNOTSUPP;
1215         }
1216
1217         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1218                                           IPA_CMD_ASS_START, 0);
1219         if (rc) {
1220                 dev_warn(&card->gdev->dev,
1221                         "Starting multicast support for %s failed\n",
1222                         QETH_CARD_IFNAME(card));
1223         } else {
1224                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1225                 card->dev->flags |= IFF_MULTICAST;
1226         }
1227         return rc;
1228 }
1229
1230 #ifdef CONFIG_QETH_IPV6
1231 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1232 {
1233         int rc;
1234
1235         QETH_CARD_TEXT(card, 3, "softipv6");
1236
1237         if (card->info.type == QETH_CARD_TYPE_IQD)
1238                 goto out;
1239
1240         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1241         if (rc) {
1242                 dev_err(&card->gdev->dev,
1243                         "Activating IPv6 support for %s failed\n",
1244                         QETH_CARD_IFNAME(card));
1245                 return rc;
1246         }
1247         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1248                                           IPA_CMD_ASS_START, 3);
1249         if (rc) {
1250                 dev_err(&card->gdev->dev,
1251                         "Activating IPv6 support for %s failed\n",
1252                         QETH_CARD_IFNAME(card));
1253                 return rc;
1254         }
1255         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1256                                                IPA_CMD_ASS_START);
1257         if (rc) {
1258                 dev_err(&card->gdev->dev,
1259                         "Activating IPv6 support for %s failed\n",
1260                          QETH_CARD_IFNAME(card));
1261                 return rc;
1262         }
1263         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1264                                                IPA_CMD_ASS_START);
1265         if (rc) {
1266                 dev_warn(&card->gdev->dev,
1267                         "Enabling the passthrough mode for %s failed\n",
1268                         QETH_CARD_IFNAME(card));
1269                 return rc;
1270         }
1271 out:
1272         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1273         return 0;
1274 }
1275 #endif
1276
1277 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1278 {
1279         int rc = 0;
1280
1281         QETH_CARD_TEXT(card, 3, "strtipv6");
1282
1283         if (!qeth_is_supported(card, IPA_IPV6)) {
1284                 dev_info(&card->gdev->dev,
1285                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1286                 return 0;
1287         }
1288 #ifdef CONFIG_QETH_IPV6
1289         rc = qeth_l3_softsetup_ipv6(card);
1290 #endif
1291         return rc ;
1292 }
1293
1294 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1295 {
1296         int rc;
1297
1298         QETH_CARD_TEXT(card, 3, "stbrdcst");
1299         card->info.broadcast_capable = 0;
1300         if (!qeth_is_supported(card, IPA_FILTERING)) {
1301                 dev_info(&card->gdev->dev,
1302                         "Broadcast not supported on %s\n",
1303                         QETH_CARD_IFNAME(card));
1304                 rc = -EOPNOTSUPP;
1305                 goto out;
1306         }
1307         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1308                                           IPA_CMD_ASS_START, 0);
1309         if (rc) {
1310                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1311                         "%s failed\n", QETH_CARD_IFNAME(card));
1312                 goto out;
1313         }
1314
1315         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1316                                           IPA_CMD_ASS_CONFIGURE, 1);
1317         if (rc) {
1318                 dev_warn(&card->gdev->dev,
1319                         "Setting up broadcast filtering for %s failed\n",
1320                         QETH_CARD_IFNAME(card));
1321                 goto out;
1322         }
1323         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1324         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1325         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1326                                           IPA_CMD_ASS_ENABLE, 1);
1327         if (rc) {
1328                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1329                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1330                 goto out;
1331         }
1332         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1333 out:
1334         if (card->info.broadcast_capable)
1335                 card->dev->flags |= IFF_BROADCAST;
1336         else
1337                 card->dev->flags &= ~IFF_BROADCAST;
1338         return rc;
1339 }
1340
1341 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1342 {
1343         int rc;
1344
1345         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1346                                           IPA_CMD_ASS_START, 0);
1347         if (rc) {
1348                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1349                         "failed, using SW checksumming\n",
1350                         QETH_CARD_IFNAME(card));
1351                 return rc;
1352         }
1353         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1354                                           IPA_CMD_ASS_ENABLE,
1355                                           card->info.csum_mask);
1356         if (rc) {
1357                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1358                         "failed, using SW checksumming\n",
1359                         QETH_CARD_IFNAME(card));
1360                 return rc;
1361         }
1362         return 0;
1363 }
1364
1365 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1366 {
1367         int rc = 0;
1368
1369         if (on) {
1370                 rc = qeth_l3_send_checksum_command(card);
1371                 if (rc)
1372                         return -EIO;
1373                 dev_info(&card->gdev->dev,
1374                         "HW Checksumming (inbound) enabled\n");
1375         } else {
1376                 rc = qeth_l3_send_simple_setassparms(card,
1377                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1378                 if (rc)
1379                         return -EIO;
1380         }
1381
1382         return 0;
1383 }
1384
1385 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1386 {
1387         QETH_CARD_TEXT(card, 3, "strtcsum");
1388
1389         if (card->dev->features & NETIF_F_RXCSUM) {
1390                 rtnl_lock();
1391                 /* force set_features call */
1392                 card->dev->features &= ~NETIF_F_RXCSUM;
1393                 netdev_update_features(card->dev);
1394                 rtnl_unlock();
1395         }
1396         return 0;
1397 }
1398
1399 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1400 {
1401         int rc = 0;
1402
1403         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1404                 return rc;
1405         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1406                           IPA_CMD_ASS_START, 0);
1407         if (rc)
1408                 goto err_out;
1409         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1410                           IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1411         if (rc)
1412                 goto err_out;
1413         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1414         return rc;
1415 err_out:
1416         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1417                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1418         return rc;
1419 }
1420
1421 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1422 {
1423         int rc;
1424
1425         QETH_CARD_TEXT(card, 3, "sttso");
1426
1427         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1428                 dev_info(&card->gdev->dev,
1429                         "Outbound TSO not supported on %s\n",
1430                         QETH_CARD_IFNAME(card));
1431                 rc = -EOPNOTSUPP;
1432         } else {
1433                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1434                                                 IPA_CMD_ASS_START, 0);
1435                 if (rc)
1436                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1437                                 "segmentation offload for %s failed\n",
1438                                 QETH_CARD_IFNAME(card));
1439                 else
1440                         dev_info(&card->gdev->dev,
1441                                 "Outbound TSO enabled\n");
1442         }
1443         if (rc)
1444                 card->dev->features &= ~NETIF_F_TSO;
1445         return rc;
1446 }
1447
1448 static int qeth_l3_start_ipassists(struct qeth_card *card)
1449 {
1450         QETH_CARD_TEXT(card, 3, "strtipas");
1451
1452         if (qeth_set_access_ctrl_online(card, 0))
1453                 return -EIO;
1454         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1455         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1456         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1457         qeth_l3_start_ipa_vlan(card);           /* go on*/
1458         qeth_l3_start_ipa_multicast(card);              /* go on*/
1459         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1460         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1461         qeth_l3_start_ipa_checksum(card);               /* go on*/
1462         qeth_l3_start_ipa_tx_checksum(card);
1463         qeth_l3_start_ipa_tso(card);            /* go on*/
1464         return 0;
1465 }
1466
1467 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1468                 struct qeth_reply *reply, unsigned long data)
1469 {
1470         struct qeth_ipa_cmd *cmd;
1471
1472         cmd = (struct qeth_ipa_cmd *) data;
1473         if (cmd->hdr.return_code == 0)
1474                 memcpy(card->dev->dev_addr,
1475                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1476         else
1477                 eth_random_addr(card->dev->dev_addr);
1478
1479         return 0;
1480 }
1481
1482 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1483 {
1484         int rc = 0;
1485         struct qeth_cmd_buffer *iob;
1486         struct qeth_ipa_cmd *cmd;
1487
1488         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1489
1490         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1491                                      QETH_PROT_IPV6);
1492         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1493         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1494                         card->info.unique_id;
1495
1496         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1497                                 NULL);
1498         return rc;
1499 }
1500
1501 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1502                 struct qeth_reply *reply, unsigned long data)
1503 {
1504         struct qeth_ipa_cmd *cmd;
1505
1506         cmd = (struct qeth_ipa_cmd *) data;
1507         if (cmd->hdr.return_code == 0)
1508                 card->info.unique_id = *((__u16 *)
1509                                 &cmd->data.create_destroy_addr.unique_id[6]);
1510         else {
1511                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1512                                         UNIQUE_ID_NOT_BY_CARD;
1513                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1514                         "generate a unique ID\n");
1515         }
1516         return 0;
1517 }
1518
1519 static int qeth_l3_get_unique_id(struct qeth_card *card)
1520 {
1521         int rc = 0;
1522         struct qeth_cmd_buffer *iob;
1523         struct qeth_ipa_cmd *cmd;
1524
1525         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1526
1527         if (!qeth_is_supported(card, IPA_IPV6)) {
1528                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1529                                         UNIQUE_ID_NOT_BY_CARD;
1530                 return 0;
1531         }
1532
1533         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1534                                      QETH_PROT_IPV6);
1535         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1536         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1537                         card->info.unique_id;
1538
1539         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1540         return rc;
1541 }
1542
1543 static int
1544 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1545                             unsigned long data)
1546 {
1547         struct qeth_ipa_cmd        *cmd;
1548         __u16 rc;
1549
1550         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1551
1552         cmd = (struct qeth_ipa_cmd *)data;
1553         rc = cmd->hdr.return_code;
1554         if (rc)
1555                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1556         switch (cmd->data.diagass.action) {
1557         case QETH_DIAGS_CMD_TRACE_QUERY:
1558                 break;
1559         case QETH_DIAGS_CMD_TRACE_DISABLE:
1560                 switch (rc) {
1561                 case 0:
1562                 case IPA_RC_INVALID_SUBCMD:
1563                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1564                         dev_info(&card->gdev->dev, "The HiperSockets network "
1565                                 "traffic analyzer is deactivated\n");
1566                         break;
1567                 default:
1568                         break;
1569                 }
1570                 break;
1571         case QETH_DIAGS_CMD_TRACE_ENABLE:
1572                 switch (rc) {
1573                 case 0:
1574                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1575                         dev_info(&card->gdev->dev, "The HiperSockets network "
1576                                 "traffic analyzer is activated\n");
1577                         break;
1578                 case IPA_RC_HARDWARE_AUTH_ERROR:
1579                         dev_warn(&card->gdev->dev, "The device is not "
1580                                 "authorized to run as a HiperSockets network "
1581                                 "traffic analyzer\n");
1582                         break;
1583                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1584                         dev_warn(&card->gdev->dev, "A HiperSockets "
1585                                 "network traffic analyzer is already "
1586                                 "active in the HiperSockets LAN\n");
1587                         break;
1588                 default:
1589                         break;
1590                 }
1591                 break;
1592         default:
1593                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1594                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1595         }
1596
1597         return 0;
1598 }
1599
1600 static int
1601 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1602 {
1603         struct qeth_cmd_buffer *iob;
1604         struct qeth_ipa_cmd    *cmd;
1605
1606         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1607
1608         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1609         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1610         cmd->data.diagass.subcmd_len = 16;
1611         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1612         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1613         cmd->data.diagass.action = diags_cmd;
1614         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1615 }
1616
1617 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1618                                 struct net_device *dev)
1619 {
1620         ip_eth_mc_map(ipm, mac);
1621 }
1622
1623 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1624 {
1625         struct qeth_ipaddr *ipm;
1626         struct ip_mc_list *im4;
1627         char buf[MAX_ADDR_LEN];
1628
1629         QETH_CARD_TEXT(card, 4, "addmc");
1630         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1631              im4 = rcu_dereference(im4->next_rcu)) {
1632                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1633                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1634                 if (!ipm)
1635                         continue;
1636                 ipm->u.a4.addr = im4->multiaddr;
1637                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1638                 ipm->is_multicast = 1;
1639                 if (!qeth_l3_add_ip(card, ipm))
1640                         kfree(ipm);
1641         }
1642 }
1643
1644 /* called with rcu_read_lock */
1645 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1646 {
1647         struct in_device *in_dev;
1648         u16 vid;
1649
1650         QETH_CARD_TEXT(card, 4, "addmcvl");
1651         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1652                 return;
1653
1654         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1655                 struct net_device *netdev;
1656
1657                 netdev = __vlan_find_dev_deep(card->dev, vid);
1658                 if (netdev == NULL ||
1659                     !(netdev->flags & IFF_UP))
1660                         continue;
1661                 in_dev = __in_dev_get_rcu(netdev);
1662                 if (!in_dev)
1663                         continue;
1664                 qeth_l3_add_mc(card, in_dev);
1665         }
1666 }
1667
1668 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1669 {
1670         struct in_device *in4_dev;
1671
1672         QETH_CARD_TEXT(card, 4, "chkmcv4");
1673         rcu_read_lock();
1674         in4_dev = __in_dev_get_rcu(card->dev);
1675         if (in4_dev == NULL)
1676                 goto unlock;
1677         qeth_l3_add_mc(card, in4_dev);
1678         qeth_l3_add_vlan_mc(card);
1679 unlock:
1680         rcu_read_unlock();
1681 }
1682
1683 #ifdef CONFIG_QETH_IPV6
1684 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1685 {
1686         struct qeth_ipaddr *ipm;
1687         struct ifmcaddr6 *im6;
1688         char buf[MAX_ADDR_LEN];
1689
1690         QETH_CARD_TEXT(card, 4, "addmc6");
1691         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1692                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1693                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1694                 if (!ipm)
1695                         continue;
1696                 ipm->is_multicast = 1;
1697                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1698                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1699                        sizeof(struct in6_addr));
1700                 if (!qeth_l3_add_ip(card, ipm))
1701                         kfree(ipm);
1702         }
1703 }
1704
1705 /* called with rcu_read_lock */
1706 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1707 {
1708         struct inet6_dev *in_dev;
1709         u16 vid;
1710
1711         QETH_CARD_TEXT(card, 4, "admc6vl");
1712         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1713                 return;
1714
1715         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1716                 struct net_device *netdev;
1717
1718                 netdev = __vlan_find_dev_deep(card->dev, vid);
1719                 if (netdev == NULL ||
1720                     !(netdev->flags & IFF_UP))
1721                         continue;
1722                 in_dev = in6_dev_get(netdev);
1723                 if (!in_dev)
1724                         continue;
1725                 read_lock_bh(&in_dev->lock);
1726                 qeth_l3_add_mc6(card, in_dev);
1727                 read_unlock_bh(&in_dev->lock);
1728                 in6_dev_put(in_dev);
1729         }
1730 }
1731
1732 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1733 {
1734         struct inet6_dev *in6_dev;
1735
1736         QETH_CARD_TEXT(card, 4, "chkmcv6");
1737         if (!qeth_is_supported(card, IPA_IPV6))
1738                 return ;
1739         in6_dev = in6_dev_get(card->dev);
1740         if (in6_dev == NULL)
1741                 return;
1742         rcu_read_lock();
1743         read_lock_bh(&in6_dev->lock);
1744         qeth_l3_add_mc6(card, in6_dev);
1745         qeth_l3_add_vlan_mc6(card);
1746         read_unlock_bh(&in6_dev->lock);
1747         rcu_read_unlock();
1748         in6_dev_put(in6_dev);
1749 }
1750 #endif /* CONFIG_QETH_IPV6 */
1751
1752 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1753                         unsigned short vid)
1754 {
1755         struct in_device *in_dev;
1756         struct in_ifaddr *ifa;
1757         struct qeth_ipaddr *addr;
1758         struct net_device *netdev;
1759
1760         QETH_CARD_TEXT(card, 4, "frvaddr4");
1761
1762         netdev = __vlan_find_dev_deep(card->dev, vid);
1763         if (!netdev)
1764                 return;
1765         in_dev = in_dev_get(netdev);
1766         if (!in_dev)
1767                 return;
1768         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1769                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1770                 if (addr) {
1771                         addr->u.a4.addr = ifa->ifa_address;
1772                         addr->u.a4.mask = ifa->ifa_mask;
1773                         addr->type = QETH_IP_TYPE_NORMAL;
1774                         if (!qeth_l3_delete_ip(card, addr))
1775                                 kfree(addr);
1776                 }
1777         }
1778         in_dev_put(in_dev);
1779 }
1780
1781 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1782                         unsigned short vid)
1783 {
1784 #ifdef CONFIG_QETH_IPV6
1785         struct inet6_dev *in6_dev;
1786         struct inet6_ifaddr *ifa;
1787         struct qeth_ipaddr *addr;
1788         struct net_device *netdev;
1789
1790         QETH_CARD_TEXT(card, 4, "frvaddr6");
1791
1792         netdev = __vlan_find_dev_deep(card->dev, vid);
1793         if (!netdev)
1794                 return;
1795         in6_dev = in6_dev_get(netdev);
1796         if (!in6_dev)
1797                 return;
1798         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1799                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1800                 if (addr) {
1801                         memcpy(&addr->u.a6.addr, &ifa->addr,
1802                                sizeof(struct in6_addr));
1803                         addr->u.a6.pfxlen = ifa->prefix_len;
1804                         addr->type = QETH_IP_TYPE_NORMAL;
1805                         if (!qeth_l3_delete_ip(card, addr))
1806                                 kfree(addr);
1807                 }
1808         }
1809         in6_dev_put(in6_dev);
1810 #endif /* CONFIG_QETH_IPV6 */
1811 }
1812
1813 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1814                         unsigned short vid)
1815 {
1816         rcu_read_lock();
1817         qeth_l3_free_vlan_addresses4(card, vid);
1818         qeth_l3_free_vlan_addresses6(card, vid);
1819         rcu_read_unlock();
1820 }
1821
1822 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1823 {
1824         struct qeth_card *card = dev->ml_priv;
1825
1826         set_bit(vid, card->active_vlans);
1827         return 0;
1828 }
1829
1830 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1831 {
1832         struct qeth_card *card = dev->ml_priv;
1833         unsigned long flags;
1834
1835         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1836         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1837                 QETH_CARD_TEXT(card, 3, "kidREC");
1838                 return 0;
1839         }
1840         spin_lock_irqsave(&card->vlanlock, flags);
1841         /* unregister IP addresses of vlan device */
1842         qeth_l3_free_vlan_addresses(card, vid);
1843         clear_bit(vid, card->active_vlans);
1844         spin_unlock_irqrestore(&card->vlanlock, flags);
1845         qeth_l3_set_multicast_list(card->dev);
1846         return 0;
1847 }
1848
1849 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1850                         struct sk_buff *skb, struct qeth_hdr *hdr,
1851                         unsigned short *vlan_id)
1852 {
1853         __be16 prot;
1854         struct iphdr *ip_hdr;
1855         unsigned char tg_addr[MAX_ADDR_LEN];
1856         int is_vlan = 0;
1857
1858         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1859                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1860                               ETH_P_IP);
1861                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1862                 case QETH_CAST_MULTICAST:
1863                         switch (prot) {
1864 #ifdef CONFIG_QETH_IPV6
1865                         case __constant_htons(ETH_P_IPV6):
1866                                 ndisc_mc_map((struct in6_addr *)
1867                                      skb->data + 24,
1868                                      tg_addr, card->dev, 0);
1869                                 break;
1870 #endif
1871                         case __constant_htons(ETH_P_IP):
1872                                 ip_hdr = (struct iphdr *)skb->data;
1873                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1874                                 break;
1875                         default:
1876                                 memcpy(tg_addr, card->dev->broadcast,
1877                                         card->dev->addr_len);
1878                         }
1879                         card->stats.multicast++;
1880                         skb->pkt_type = PACKET_MULTICAST;
1881                         break;
1882                 case QETH_CAST_BROADCAST:
1883                         memcpy(tg_addr, card->dev->broadcast,
1884                                 card->dev->addr_len);
1885                         card->stats.multicast++;
1886                         skb->pkt_type = PACKET_BROADCAST;
1887                         break;
1888                 case QETH_CAST_UNICAST:
1889                 case QETH_CAST_ANYCAST:
1890                 case QETH_CAST_NOCAST:
1891                 default:
1892                         if (card->options.sniffer)
1893                                 skb->pkt_type = PACKET_OTHERHOST;
1894                         else
1895                                 skb->pkt_type = PACKET_HOST;
1896                         memcpy(tg_addr, card->dev->dev_addr,
1897                                 card->dev->addr_len);
1898                 }
1899                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1900                         card->dev->header_ops->create(skb, card->dev, prot,
1901                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1902                                 card->dev->addr_len);
1903                 else
1904                         card->dev->header_ops->create(skb, card->dev, prot,
1905                                 tg_addr, "FAKELL", card->dev->addr_len);
1906         }
1907
1908         skb->protocol = eth_type_trans(skb, card->dev);
1909
1910         if (hdr->hdr.l3.ext_flags &
1911             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1912                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1913                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1914                 is_vlan = 1;
1915         }
1916
1917         if (card->dev->features & NETIF_F_RXCSUM) {
1918                 if ((hdr->hdr.l3.ext_flags &
1919                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1920                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1921                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1922                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1923                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1924                 else
1925                         skb->ip_summed = CHECKSUM_NONE;
1926         } else
1927                 skb->ip_summed = CHECKSUM_NONE;
1928
1929         return is_vlan;
1930 }
1931
1932 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1933                                 int budget, int *done)
1934 {
1935         int work_done = 0;
1936         struct sk_buff *skb;
1937         struct qeth_hdr *hdr;
1938         __u16 vlan_tag = 0;
1939         int is_vlan;
1940         unsigned int len;
1941         __u16 magic;
1942
1943         *done = 0;
1944         WARN_ON_ONCE(!budget);
1945         while (budget) {
1946                 skb = qeth_core_get_next_skb(card,
1947                         &card->qdio.in_q->bufs[card->rx.b_index],
1948                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1949                 if (!skb) {
1950                         *done = 1;
1951                         break;
1952                 }
1953                 skb->dev = card->dev;
1954                 switch (hdr->hdr.l3.id) {
1955                 case QETH_HEADER_TYPE_LAYER3:
1956                         magic = *(__u16 *)skb->data;
1957                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1958                             (magic == ETH_P_AF_IUCV)) {
1959                                 skb->protocol = ETH_P_AF_IUCV;
1960                                 skb->pkt_type = PACKET_HOST;
1961                                 skb->mac_header = NET_SKB_PAD;
1962                                 skb->dev = card->dev;
1963                                 len = skb->len;
1964                                 card->dev->header_ops->create(skb, card->dev, 0,
1965                                         card->dev->dev_addr, "FAKELL",
1966                                         card->dev->addr_len);
1967                                 netif_receive_skb(skb);
1968                         } else {
1969                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1970                                                       &vlan_tag);
1971                                 len = skb->len;
1972                                 if (is_vlan && !card->options.sniffer)
1973                                         __vlan_hwaccel_put_tag(skb, vlan_tag);
1974                                 napi_gro_receive(&card->napi, skb);
1975                         }
1976                         break;
1977                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1978                         skb->pkt_type = PACKET_HOST;
1979                         skb->protocol = eth_type_trans(skb, skb->dev);
1980                         len = skb->len;
1981                         netif_receive_skb(skb);
1982                         break;
1983                 default:
1984                         dev_kfree_skb_any(skb);
1985                         QETH_CARD_TEXT(card, 3, "inbunkno");
1986                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1987                         continue;
1988                 }
1989                 work_done++;
1990                 budget--;
1991                 card->stats.rx_packets++;
1992                 card->stats.rx_bytes += len;
1993         }
1994         return work_done;
1995 }
1996
1997 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1998 {
1999         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2000         int work_done = 0;
2001         struct qeth_qdio_buffer *buffer;
2002         int done;
2003         int new_budget = budget;
2004
2005         if (card->options.performance_stats) {
2006                 card->perf_stats.inbound_cnt++;
2007                 card->perf_stats.inbound_start_time = qeth_get_micros();
2008         }
2009
2010         while (1) {
2011                 if (!card->rx.b_count) {
2012                         card->rx.qdio_err = 0;
2013                         card->rx.b_count = qdio_get_next_buffers(
2014                                 card->data.ccwdev, 0, &card->rx.b_index,
2015                                 &card->rx.qdio_err);
2016                         if (card->rx.b_count <= 0) {
2017                                 card->rx.b_count = 0;
2018                                 break;
2019                         }
2020                         card->rx.b_element =
2021                                 &card->qdio.in_q->bufs[card->rx.b_index]
2022                                 .buffer->element[0];
2023                         card->rx.e_offset = 0;
2024                 }
2025
2026                 while (card->rx.b_count) {
2027                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2028                         if (!(card->rx.qdio_err &&
2029                             qeth_check_qdio_errors(card, buffer->buffer,
2030                             card->rx.qdio_err, "qinerr")))
2031                                 work_done += qeth_l3_process_inbound_buffer(
2032                                         card, new_budget, &done);
2033                         else
2034                                 done = 1;
2035
2036                         if (done) {
2037                                 if (card->options.performance_stats)
2038                                         card->perf_stats.bufs_rec++;
2039                                 qeth_put_buffer_pool_entry(card,
2040                                         buffer->pool_entry);
2041                                 qeth_queue_input_buffer(card, card->rx.b_index);
2042                                 card->rx.b_count--;
2043                                 if (card->rx.b_count) {
2044                                         card->rx.b_index =
2045                                                 (card->rx.b_index + 1) %
2046                                                 QDIO_MAX_BUFFERS_PER_Q;
2047                                         card->rx.b_element =
2048                                                 &card->qdio.in_q
2049                                                 ->bufs[card->rx.b_index]
2050                                                 .buffer->element[0];
2051                                         card->rx.e_offset = 0;
2052                                 }
2053                         }
2054
2055                         if (work_done >= budget)
2056                                 goto out;
2057                         else
2058                                 new_budget = budget - work_done;
2059                 }
2060         }
2061
2062         napi_complete(napi);
2063         if (qdio_start_irq(card->data.ccwdev, 0))
2064                 napi_schedule(&card->napi);
2065 out:
2066         if (card->options.performance_stats)
2067                 card->perf_stats.inbound_time += qeth_get_micros() -
2068                         card->perf_stats.inbound_start_time;
2069         return work_done;
2070 }
2071
2072 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2073                         struct qeth_card *card)
2074 {
2075         int rc = 0;
2076         u16 vid;
2077
2078         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2079                 struct net_device *netdev;
2080
2081                 rcu_read_lock();
2082                 netdev = __vlan_find_dev_deep(card->dev, vid);
2083                 rcu_read_unlock();
2084                 if (netdev == dev) {
2085                         rc = QETH_VLAN_CARD;
2086                         break;
2087                 }
2088         }
2089
2090         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2091                 return 0;
2092
2093         return rc;
2094 }
2095
2096 static int qeth_l3_verify_dev(struct net_device *dev)
2097 {
2098         struct qeth_card *card;
2099         unsigned long flags;
2100         int rc = 0;
2101
2102         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2103         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2104                 if (card->dev == dev) {
2105                         rc = QETH_REAL_CARD;
2106                         break;
2107                 }
2108                 rc = qeth_l3_verify_vlan_dev(dev, card);
2109                 if (rc)
2110                         break;
2111         }
2112         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2113
2114         return rc;
2115 }
2116
2117 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2118 {
2119         struct qeth_card *card = NULL;
2120         int rc;
2121
2122         rc = qeth_l3_verify_dev(dev);
2123         if (rc == QETH_REAL_CARD)
2124                 card = dev->ml_priv;
2125         else if (rc == QETH_VLAN_CARD)
2126                 card = vlan_dev_real_dev(dev)->ml_priv;
2127         if (card && card->options.layer2)
2128                 card = NULL;
2129         if (card)
2130                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2131         return card ;
2132 }
2133
2134 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2135 {
2136         int rc = 0;
2137
2138         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2139         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2140
2141         qeth_set_allowed_threads(card, 0, 1);
2142         if (card->options.sniffer &&
2143             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2144                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2145         if (card->read.state == CH_STATE_UP &&
2146             card->write.state == CH_STATE_UP &&
2147             (card->state == CARD_STATE_UP)) {
2148                 if (recovery_mode)
2149                         qeth_l3_stop(card->dev);
2150                 else {
2151                         rtnl_lock();
2152                         dev_close(card->dev);
2153                         rtnl_unlock();
2154                 }
2155                 card->state = CARD_STATE_SOFTSETUP;
2156         }
2157         if (card->state == CARD_STATE_SOFTSETUP) {
2158                 qeth_l3_clear_ip_list(card, 1);
2159                 qeth_clear_ipacmd_list(card);
2160                 card->state = CARD_STATE_HARDSETUP;
2161         }
2162         if (card->state == CARD_STATE_HARDSETUP) {
2163                 qeth_qdio_clear_card(card, 0);
2164                 qeth_clear_qdio_buffers(card);
2165                 qeth_clear_working_pool_list(card);
2166                 card->state = CARD_STATE_DOWN;
2167         }
2168         if (card->state == CARD_STATE_DOWN) {
2169                 qeth_clear_cmd_buffers(&card->read);
2170                 qeth_clear_cmd_buffers(&card->write);
2171         }
2172         return rc;
2173 }
2174
2175 /*
2176  * test for and Switch promiscuous mode (on or off)
2177  *  either for guestlan or HiperSocket Sniffer
2178  */
2179 static void
2180 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2181 {
2182         struct net_device *dev = card->dev;
2183
2184         if (((dev->flags & IFF_PROMISC) &&
2185              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2186             (!(dev->flags & IFF_PROMISC) &&
2187              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2188                 return;
2189
2190         if (card->info.guestlan) {              /* Guestlan trace */
2191                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2192                         qeth_setadp_promisc_mode(card);
2193         } else if (card->options.sniffer &&     /* HiperSockets trace */
2194                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2195                 if (dev->flags & IFF_PROMISC) {
2196                         QETH_CARD_TEXT(card, 3, "+promisc");
2197                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2198                 } else {
2199                         QETH_CARD_TEXT(card, 3, "-promisc");
2200                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2201                 }
2202         }
2203 }
2204
2205 static void qeth_l3_set_multicast_list(struct net_device *dev)
2206 {
2207         struct qeth_card *card = dev->ml_priv;
2208
2209         QETH_CARD_TEXT(card, 3, "setmulti");
2210         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2211             (card->state != CARD_STATE_UP))
2212                 return;
2213         if (!card->options.sniffer) {
2214                 qeth_l3_delete_mc_addresses(card);
2215                 qeth_l3_add_multicast_ipv4(card);
2216 #ifdef CONFIG_QETH_IPV6
2217                 qeth_l3_add_multicast_ipv6(card);
2218 #endif
2219                 qeth_l3_set_ip_addr_list(card);
2220                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2221                         return;
2222         }
2223         qeth_l3_handle_promisc_mode(card);
2224 }
2225
2226 static const char *qeth_l3_arp_get_error_cause(int *rc)
2227 {
2228         switch (*rc) {
2229         case QETH_IPA_ARP_RC_FAILED:
2230                 *rc = -EIO;
2231                 return "operation failed";
2232         case QETH_IPA_ARP_RC_NOTSUPP:
2233                 *rc = -EOPNOTSUPP;
2234                 return "operation not supported";
2235         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2236                 *rc = -EINVAL;
2237                 return "argument out of range";
2238         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2239                 *rc = -EOPNOTSUPP;
2240                 return "query operation not supported";
2241         case QETH_IPA_ARP_RC_Q_NO_DATA:
2242                 *rc = -ENOENT;
2243                 return "no query data available";
2244         default:
2245                 return "unknown error";
2246         }
2247 }
2248
2249 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2250 {
2251         int tmp;
2252         int rc;
2253
2254         QETH_CARD_TEXT(card, 3, "arpstnoe");
2255
2256         /*
2257          * currently GuestLAN only supports the ARP assist function
2258          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2259          * thus we say EOPNOTSUPP for this ARP function
2260          */
2261         if (card->info.guestlan)
2262                 return -EOPNOTSUPP;
2263         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2264                 return -EOPNOTSUPP;
2265         }
2266         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2267                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2268                                           no_entries);
2269         if (rc) {
2270                 tmp = rc;
2271                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2272                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2273                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2274         }
2275         return rc;
2276 }
2277
2278 static __u32 get_arp_entry_size(struct qeth_card *card,
2279                         struct qeth_arp_query_data *qdata,
2280                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2281 {
2282         __u32 rc;
2283         __u8 is_hsi;
2284
2285         is_hsi = qdata->reply_bits == 5;
2286         if (type->ip == QETHARP_IP_ADDR_V4) {
2287                 QETH_CARD_TEXT(card, 4, "arpev4");
2288                 if (strip_entries) {
2289                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2290                                 sizeof(struct qeth_arp_qi_entry7_short);
2291                 } else {
2292                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2293                                 sizeof(struct qeth_arp_qi_entry7);
2294                 }
2295         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2296                 QETH_CARD_TEXT(card, 4, "arpev6");
2297                 if (strip_entries) {
2298                         rc = is_hsi ?
2299                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2300                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2301                 } else {
2302                         rc = is_hsi ?
2303                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2304                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2305                 }
2306         } else {
2307                 QETH_CARD_TEXT(card, 4, "arpinv");
2308                 rc = 0;
2309         }
2310
2311         return rc;
2312 }
2313
2314 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2315 {
2316         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2317                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2318 }
2319
2320 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2321                 struct qeth_reply *reply, unsigned long data)
2322 {
2323         struct qeth_ipa_cmd *cmd;
2324         struct qeth_arp_query_data *qdata;
2325         struct qeth_arp_query_info *qinfo;
2326         int i;
2327         int e;
2328         int entrybytes_done;
2329         int stripped_bytes;
2330         __u8 do_strip_entries;
2331
2332         QETH_CARD_TEXT(card, 3, "arpquecb");
2333
2334         qinfo = (struct qeth_arp_query_info *) reply->param;
2335         cmd = (struct qeth_ipa_cmd *) data;
2336         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2337         if (cmd->hdr.return_code) {
2338                 QETH_CARD_TEXT(card, 4, "arpcberr");
2339                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2340                 return 0;
2341         }
2342         if (cmd->data.setassparms.hdr.return_code) {
2343                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2344                 QETH_CARD_TEXT(card, 4, "setaperr");
2345                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2346                 return 0;
2347         }
2348         qdata = &cmd->data.setassparms.data.query_arp;
2349         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2350
2351         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2352         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2353         entrybytes_done = 0;
2354         for (e = 0; e < qdata->no_entries; ++e) {
2355                 char *cur_entry;
2356                 __u32 esize;
2357                 struct qeth_arp_entrytype *etype;
2358
2359                 cur_entry = &qdata->data + entrybytes_done;
2360                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2361                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2362                         QETH_CARD_TEXT(card, 4, "pmis");
2363                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2364                         break;
2365                 }
2366                 esize = get_arp_entry_size(card, qdata, etype,
2367                         do_strip_entries);
2368                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2369                 if (!esize)
2370                         break;
2371
2372                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2373                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2374                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2375                         goto out_error;
2376                 }
2377
2378                 memcpy(qinfo->udata + qinfo->udata_offset,
2379                         &qdata->data + entrybytes_done + stripped_bytes,
2380                         esize);
2381                 entrybytes_done += esize + stripped_bytes;
2382                 qinfo->udata_offset += esize;
2383                 ++qinfo->no_entries;
2384         }
2385         /* check if all replies received ... */
2386         if (cmd->data.setassparms.hdr.seq_no <
2387             cmd->data.setassparms.hdr.number_of_replies)
2388                 return 1;
2389         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2390         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2391         /* keep STRIP_ENTRIES flag so the user program can distinguish
2392          * stripped entries from normal ones */
2393         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2394                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2395         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2396         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2397         return 0;
2398 out_error:
2399         i = 0;
2400         memcpy(qinfo->udata, &i, 4);
2401         return 0;
2402 }
2403
2404 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2405                 struct qeth_cmd_buffer *iob, int len,
2406                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2407                         unsigned long),
2408                 void *reply_param)
2409 {
2410         QETH_CARD_TEXT(card, 4, "sendarp");
2411
2412         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2413         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2414                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2415         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2416                                       reply_cb, reply_param);
2417 }
2418
2419 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2420         enum qeth_prot_versions prot,
2421         struct qeth_arp_query_info *qinfo)
2422 {
2423         struct qeth_cmd_buffer *iob;
2424         struct qeth_ipa_cmd *cmd;
2425         int tmp;
2426         int rc;
2427
2428         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2429
2430         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2431                         IPA_CMD_ASS_ARP_QUERY_INFO,
2432                         sizeof(struct qeth_arp_query_data) - sizeof(char),
2433                         prot);
2434         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2435         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2436         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2437         cmd->data.setassparms.data.query_arp.no_entries = 0;
2438         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2439                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2440                            qeth_l3_arp_query_cb, (void *)qinfo);
2441         if (rc) {
2442                 tmp = rc;
2443                 QETH_DBF_MESSAGE(2,
2444                         "Error while querying ARP cache on %s: %s "
2445                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2446                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2447         }
2448
2449         return rc;
2450 }
2451
2452 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2453 {
2454         struct qeth_arp_query_info qinfo = {0, };
2455         int rc;
2456
2457         QETH_CARD_TEXT(card, 3, "arpquery");
2458
2459         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2460                                IPA_ARP_PROCESSING)) {
2461                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2462                 rc = -EOPNOTSUPP;
2463                 goto out;
2464         }
2465         /* get size of userspace buffer and mask_bits -> 6 bytes */
2466         if (copy_from_user(&qinfo, udata, 6)) {
2467                 rc = -EFAULT;
2468                 goto out;
2469         }
2470         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2471         if (!qinfo.udata) {
2472                 rc = -ENOMEM;
2473                 goto out;
2474         }
2475         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2476         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2477         if (rc) {
2478                 if (copy_to_user(udata, qinfo.udata, 4))
2479                         rc = -EFAULT;
2480                         goto free_and_out;
2481         } else {
2482 #ifdef CONFIG_QETH_IPV6
2483                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2484                         /* fails in case of GuestLAN QDIO mode */
2485                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2486                                 &qinfo);
2487                 }
2488 #endif
2489                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2490                         QETH_CARD_TEXT(card, 4, "qactf");
2491                         rc = -EFAULT;
2492                         goto free_and_out;
2493                 }
2494                 QETH_CARD_TEXT_(card, 4, "qacts");
2495         }
2496 free_and_out:
2497         kfree(qinfo.udata);
2498 out:
2499         return rc;
2500 }
2501
2502 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2503                                 struct qeth_arp_cache_entry *entry)
2504 {
2505         struct qeth_cmd_buffer *iob;
2506         char buf[16];
2507         int tmp;
2508         int rc;
2509
2510         QETH_CARD_TEXT(card, 3, "arpadent");
2511
2512         /*
2513          * currently GuestLAN only supports the ARP assist function
2514          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2515          * thus we say EOPNOTSUPP for this ARP function
2516          */
2517         if (card->info.guestlan)
2518                 return -EOPNOTSUPP;
2519         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2520                 return -EOPNOTSUPP;
2521         }
2522
2523         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2524                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2525                                        sizeof(struct qeth_arp_cache_entry),
2526                                        QETH_PROT_IPV4);
2527         rc = qeth_l3_send_setassparms(card, iob,
2528                                    sizeof(struct qeth_arp_cache_entry),
2529                                    (unsigned long) entry,
2530                                    qeth_l3_default_setassparms_cb, NULL);
2531         if (rc) {
2532                 tmp = rc;
2533                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2534                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2535                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2536                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2537         }
2538         return rc;
2539 }
2540
2541 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2542                                 struct qeth_arp_cache_entry *entry)
2543 {
2544         struct qeth_cmd_buffer *iob;
2545         char buf[16] = {0, };
2546         int tmp;
2547         int rc;
2548
2549         QETH_CARD_TEXT(card, 3, "arprment");
2550
2551         /*
2552          * currently GuestLAN only supports the ARP assist function
2553          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2554          * thus we say EOPNOTSUPP for this ARP function
2555          */
2556         if (card->info.guestlan)
2557                 return -EOPNOTSUPP;
2558         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2559                 return -EOPNOTSUPP;
2560         }
2561         memcpy(buf, entry, 12);
2562         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2563                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2564                                        12,
2565                                        QETH_PROT_IPV4);
2566         rc = qeth_l3_send_setassparms(card, iob,
2567                                    12, (unsigned long)buf,
2568                                    qeth_l3_default_setassparms_cb, NULL);
2569         if (rc) {
2570                 tmp = rc;
2571                 memset(buf, 0, 16);
2572                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2573                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2574                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2575                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2576         }
2577         return rc;
2578 }
2579
2580 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2581 {
2582         int rc;
2583         int tmp;
2584
2585         QETH_CARD_TEXT(card, 3, "arpflush");
2586
2587         /*
2588          * currently GuestLAN only supports the ARP assist function
2589          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2590          * thus we say EOPNOTSUPP for this ARP function
2591         */
2592         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2593                 return -EOPNOTSUPP;
2594         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2595                 return -EOPNOTSUPP;
2596         }
2597         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2598                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2599         if (rc) {
2600                 tmp = rc;
2601                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2602                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2603                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2604         }
2605         return rc;
2606 }
2607
2608 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2609 {
2610         struct qeth_card *card = dev->ml_priv;
2611         struct qeth_arp_cache_entry arp_entry;
2612         struct mii_ioctl_data *mii_data;
2613         int rc = 0;
2614
2615         if (!card)
2616                 return -ENODEV;
2617
2618         if ((card->state != CARD_STATE_UP) &&
2619                 (card->state != CARD_STATE_SOFTSETUP))
2620                 return -ENODEV;
2621
2622         switch (cmd) {
2623         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2624                 if (!capable(CAP_NET_ADMIN)) {
2625                         rc = -EPERM;
2626                         break;
2627                 }
2628                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2629                 break;
2630         case SIOC_QETH_ARP_QUERY_INFO:
2631                 if (!capable(CAP_NET_ADMIN)) {
2632                         rc = -EPERM;
2633                         break;
2634                 }
2635                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2636                 break;
2637         case SIOC_QETH_ARP_ADD_ENTRY:
2638                 if (!capable(CAP_NET_ADMIN)) {
2639                         rc = -EPERM;
2640                         break;
2641                 }
2642                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2643                                    sizeof(struct qeth_arp_cache_entry)))
2644                         rc = -EFAULT;
2645                 else
2646                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2647                 break;
2648         case SIOC_QETH_ARP_REMOVE_ENTRY:
2649                 if (!capable(CAP_NET_ADMIN)) {
2650                         rc = -EPERM;
2651                         break;
2652                 }
2653                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2654                                    sizeof(struct qeth_arp_cache_entry)))
2655                         rc = -EFAULT;
2656                 else
2657                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2658                 break;
2659         case SIOC_QETH_ARP_FLUSH_CACHE:
2660                 if (!capable(CAP_NET_ADMIN)) {
2661                         rc = -EPERM;
2662                         break;
2663                 }
2664                 rc = qeth_l3_arp_flush_cache(card);
2665                 break;
2666         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2667                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2668                 break;
2669         case SIOC_QETH_GET_CARD_TYPE:
2670                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2671                      card->info.type == QETH_CARD_TYPE_OSX) &&
2672                     !card->info.guestlan)
2673                         return 1;
2674                 return 0;
2675                 break;
2676         case SIOCGMIIPHY:
2677                 mii_data = if_mii(rq);
2678                 mii_data->phy_id = 0;
2679                 break;
2680         case SIOCGMIIREG:
2681                 mii_data = if_mii(rq);
2682                 if (mii_data->phy_id != 0)
2683                         rc = -EINVAL;
2684                 else
2685                         mii_data->val_out = qeth_mdio_read(dev,
2686                                                         mii_data->phy_id,
2687                                                         mii_data->reg_num);
2688                 break;
2689         case SIOC_QETH_QUERY_OAT:
2690                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2691                 break;
2692         default:
2693                 rc = -EOPNOTSUPP;
2694         }
2695         if (rc)
2696                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2697         return rc;
2698 }
2699
2700 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2701 {
2702         int cast_type = RTN_UNSPEC;
2703         struct neighbour *n = NULL;
2704         struct dst_entry *dst;
2705
2706         rcu_read_lock();
2707         dst = skb_dst(skb);
2708         if (dst)
2709                 n = dst_neigh_lookup_skb(dst, skb);
2710         if (n) {
2711                 cast_type = n->type;
2712                 rcu_read_unlock();
2713                 neigh_release(n);
2714                 if ((cast_type == RTN_BROADCAST) ||
2715                     (cast_type == RTN_MULTICAST) ||
2716                     (cast_type == RTN_ANYCAST))
2717                         return cast_type;
2718                 else
2719                         return RTN_UNSPEC;
2720         }
2721         rcu_read_unlock();
2722
2723         /* try something else */
2724         if (skb->protocol == ETH_P_IPV6)
2725                 return (skb_network_header(skb)[24] == 0xff) ?
2726                                 RTN_MULTICAST : 0;
2727         else if (skb->protocol == ETH_P_IP)
2728                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2729                                 RTN_MULTICAST : 0;
2730         /* ... */
2731         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2732                 return RTN_BROADCAST;
2733         else {
2734                 u16 hdr_mac;
2735
2736                 hdr_mac = *((u16 *)skb->data);
2737                 /* tr multicast? */
2738                 switch (card->info.link_type) {
2739                 case QETH_LINK_TYPE_HSTR:
2740                 case QETH_LINK_TYPE_LANE_TR:
2741                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2742                             (hdr_mac == QETH_TR_MAC_C))
2743                                 return RTN_MULTICAST;
2744                         break;
2745                 /* eth or so multicast? */
2746                 default:
2747                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2748                             (hdr_mac == QETH_ETH_MAC_V6))
2749                                 return RTN_MULTICAST;
2750                 }
2751         }
2752         return cast_type;
2753 }
2754
2755 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2756                 struct qeth_hdr *hdr, struct sk_buff *skb)
2757 {
2758         char daddr[16];
2759         struct af_iucv_trans_hdr *iucv_hdr;
2760
2761         skb_pull(skb, 14);
2762         card->dev->header_ops->create(skb, card->dev, 0,
2763                                       card->dev->dev_addr, card->dev->dev_addr,
2764                                       card->dev->addr_len);
2765         skb_pull(skb, 14);
2766         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2767         memset(hdr, 0, sizeof(struct qeth_hdr));
2768         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2769         hdr->hdr.l3.ext_flags = 0;
2770         hdr->hdr.l3.length = skb->len;
2771         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2772         memset(daddr, 0, sizeof(daddr));
2773         daddr[0] = 0xfe;
2774         daddr[1] = 0x80;
2775         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2776         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2777 }
2778
2779 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2780                 struct sk_buff *skb, int ipv, int cast_type)
2781 {
2782         struct dst_entry *dst;
2783
2784         memset(hdr, 0, sizeof(struct qeth_hdr));
2785         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2786         hdr->hdr.l3.ext_flags = 0;
2787
2788         /*
2789          * before we're going to overwrite this location with next hop ip.
2790          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2791          */
2792         if (vlan_tx_tag_present(skb)) {
2793                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2794                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2795                 else
2796                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2797                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2798         }
2799
2800         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2801
2802         rcu_read_lock();
2803         dst = skb_dst(skb);
2804         if (ipv == 4) {
2805                 struct rtable *rt = (struct rtable *) dst;
2806                 __be32 *pkey = &ip_hdr(skb)->daddr;
2807
2808                 if (rt->rt_gateway)
2809                         pkey = &rt->rt_gateway;
2810
2811                 /* IPv4 */
2812                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2813                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2814                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2815         } else if (ipv == 6) {
2816                 struct rt6_info *rt = (struct rt6_info *) dst;
2817                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2818
2819                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2820                         pkey = &rt->rt6i_gateway;
2821
2822                 /* IPv6 */
2823                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2824                 if (card->info.type == QETH_CARD_TYPE_IQD)
2825                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2826                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2827         } else {
2828                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2829                             skb->dev->broadcast, 6)) {
2830                         /* broadcast? */
2831                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2832                                                 QETH_HDR_PASSTHRU;
2833                 } else {
2834                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2835                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2836                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2837                 }
2838         }
2839         rcu_read_unlock();
2840 }
2841
2842 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2843                 struct qeth_hdr *hdr, struct sk_buff *skb)
2844 {
2845         struct iphdr *iph = ip_hdr(skb);
2846
2847         /* tcph->check contains already the pseudo hdr checksum
2848          * so just set the header flags
2849          */
2850         if (iph->protocol == IPPROTO_UDP)
2851                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2852         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2853                 QETH_HDR_EXT_CSUM_HDR_REQ;
2854         iph->check = 0;
2855         if (card->options.performance_stats)
2856                 card->perf_stats.tx_csum++;
2857 }
2858
2859 static void qeth_tso_fill_header(struct qeth_card *card,
2860                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2861 {
2862         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2863         struct tcphdr *tcph = tcp_hdr(skb);
2864         struct iphdr *iph = ip_hdr(skb);
2865         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2866
2867         /*fix header to TSO values ...*/
2868         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2869         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2870         /*set values which are fix for the first approach ...*/
2871         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2872         hdr->ext.imb_hdr_no  = 1;
2873         hdr->ext.hdr_type    = 1;
2874         hdr->ext.hdr_version = 1;
2875         hdr->ext.hdr_len     = 28;
2876         /*insert non-fix values */
2877         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2878         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2879         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2880                                        sizeof(struct qeth_hdr_tso));
2881         tcph->check = 0;
2882         if (skb->protocol == ETH_P_IPV6) {
2883                 ip6h->payload_len = 0;
2884                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2885                                                0, IPPROTO_TCP, 0);
2886         } else {
2887                 /*OSA want us to set these values ...*/
2888                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2889                                          0, IPPROTO_TCP, 0);
2890                 iph->tot_len = 0;
2891                 iph->check = 0;
2892         }
2893 }
2894
2895 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2896 {
2897         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2898                 tcp_hdr(skb)->doff * 4;
2899         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2900         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2901         elements += skb_shinfo(skb)->nr_frags;
2902         return elements;
2903 }
2904
2905 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2906 {
2907         int rc;
2908         u16 *tag;
2909         struct qeth_hdr *hdr = NULL;
2910         int elements_needed = 0;
2911         int elems;
2912         struct qeth_card *card = dev->ml_priv;
2913         struct sk_buff *new_skb = NULL;
2914         int ipv = qeth_get_ip_version(skb);
2915         int cast_type = qeth_l3_get_cast_type(card, skb);
2916         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2917                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2918         int tx_bytes = skb->len;
2919         bool large_send;
2920         int data_offset = -1;
2921         int nr_frags;
2922
2923         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2924              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2925               ((card->options.cq == QETH_CQ_ENABLED) &&
2926                (skb->protocol != ETH_P_AF_IUCV)))) ||
2927             card->options.sniffer)
2928                         goto tx_drop;
2929
2930         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2931                 card->stats.tx_carrier_errors++;
2932                 goto tx_drop;
2933         }
2934
2935         if ((cast_type == RTN_BROADCAST) &&
2936             (card->info.broadcast_capable == 0))
2937                 goto tx_drop;
2938
2939         if (card->options.performance_stats) {
2940                 card->perf_stats.outbound_cnt++;
2941                 card->perf_stats.outbound_start_time = qeth_get_micros();
2942         }
2943
2944         large_send = skb_is_gso(skb);
2945
2946         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2947             (skb_shinfo(skb)->nr_frags == 0)) {
2948                 new_skb = skb;
2949                 if (new_skb->protocol == ETH_P_AF_IUCV)
2950                         data_offset = 0;
2951                 else
2952                         data_offset = ETH_HLEN;
2953                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2954                 if (!hdr)
2955                         goto tx_drop;
2956                 elements_needed++;
2957         } else {
2958                 /* create a clone with writeable headroom */
2959                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2960                                         + VLAN_HLEN);
2961                 if (!new_skb)
2962                         goto tx_drop;
2963         }
2964
2965         if (card->info.type == QETH_CARD_TYPE_IQD) {
2966                 if (data_offset < 0)
2967                         skb_pull(new_skb, ETH_HLEN);
2968         } else {
2969                 if (ipv == 4) {
2970                         skb_pull(new_skb, ETH_HLEN);
2971                 }
2972
2973                 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
2974                         skb_push(new_skb, VLAN_HLEN);
2975                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2976                         skb_copy_to_linear_data_offset(new_skb, 4,
2977                                 new_skb->data + 8, 4);
2978                         skb_copy_to_linear_data_offset(new_skb, 8,
2979                                 new_skb->data + 12, 4);
2980                         tag = (u16 *)(new_skb->data + 12);
2981                         *tag = __constant_htons(ETH_P_8021Q);
2982                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2983                 }
2984         }
2985
2986         netif_stop_queue(dev);
2987
2988         /* fix hardware limitation: as long as we do not have sbal
2989          * chaining we can not send long frag lists
2990          */
2991         if (large_send) {
2992                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2993                         if (skb_linearize(new_skb))
2994                                 goto tx_drop;
2995                         if (card->options.performance_stats)
2996                                 card->perf_stats.tx_lin++;
2997                 }
2998         }
2999
3000         if (large_send && (cast_type == RTN_UNSPEC)) {
3001                 hdr = (struct qeth_hdr *)skb_push(new_skb,
3002                                                 sizeof(struct qeth_hdr_tso));
3003                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3004                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3005                 qeth_tso_fill_header(card, hdr, new_skb);
3006                 elements_needed++;
3007         } else {
3008                 if (data_offset < 0) {
3009                         hdr = (struct qeth_hdr *)skb_push(new_skb,
3010                                                 sizeof(struct qeth_hdr));
3011                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3012                                                 cast_type);
3013                 } else {
3014                         if (new_skb->protocol == ETH_P_AF_IUCV)
3015                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3016                         else {
3017                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3018                                                         cast_type);
3019                                 hdr->hdr.l3.length = new_skb->len - data_offset;
3020                         }
3021                 }
3022
3023                 if (skb->ip_summed == CHECKSUM_PARTIAL)
3024                         qeth_l3_hdr_csum(card, hdr, new_skb);
3025         }
3026
3027         elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3028                                                  elements_needed);
3029         if (!elems) {
3030                 if (data_offset >= 0)
3031                         kmem_cache_free(qeth_core_header_cache, hdr);
3032                 goto tx_drop;
3033         }
3034         elements_needed += elems;
3035         nr_frags = skb_shinfo(new_skb)->nr_frags;
3036
3037         if (card->info.type != QETH_CARD_TYPE_IQD) {
3038                 int len;
3039                 if (large_send)
3040                         len = ((unsigned long)tcp_hdr(new_skb) +
3041                                 tcp_hdr(new_skb)->doff * 4) -
3042                                 (unsigned long)new_skb->data;
3043                 else
3044                         len = sizeof(struct qeth_hdr_layer3);
3045
3046                 if (qeth_hdr_chk_and_bounce(new_skb, len))
3047                         goto tx_drop;
3048                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3049                                          elements_needed);
3050         } else
3051                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3052                                         elements_needed, data_offset, 0);
3053
3054         if (!rc) {
3055                 card->stats.tx_packets++;
3056                 card->stats.tx_bytes += tx_bytes;
3057                 if (new_skb != skb)
3058                         dev_kfree_skb_any(skb);
3059                 if (card->options.performance_stats) {
3060                         if (large_send) {
3061                                 card->perf_stats.large_send_bytes += tx_bytes;
3062                                 card->perf_stats.large_send_cnt++;
3063                         }
3064                         if (nr_frags) {
3065                                 card->perf_stats.sg_skbs_sent++;
3066                                 /* nr_frags + skb->data */
3067                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3068                         }
3069                 }
3070                 rc = NETDEV_TX_OK;
3071         } else {
3072                 if (data_offset >= 0)
3073                         kmem_cache_free(qeth_core_header_cache, hdr);
3074
3075                 if (rc == -EBUSY) {
3076                         if (new_skb != skb)
3077                                 dev_kfree_skb_any(new_skb);
3078                         return NETDEV_TX_BUSY;
3079                 } else
3080                         goto tx_drop;
3081         }
3082
3083         netif_wake_queue(dev);
3084         if (card->options.performance_stats)
3085                 card->perf_stats.outbound_time += qeth_get_micros() -
3086                         card->perf_stats.outbound_start_time;
3087         return rc;
3088
3089 tx_drop:
3090         card->stats.tx_dropped++;
3091         card->stats.tx_errors++;
3092         if ((new_skb != skb) && new_skb)
3093                 dev_kfree_skb_any(new_skb);
3094         dev_kfree_skb_any(skb);
3095         netif_wake_queue(dev);
3096         return NETDEV_TX_OK;
3097 }
3098
3099 static int __qeth_l3_open(struct net_device *dev)
3100 {
3101         struct qeth_card *card = dev->ml_priv;
3102         int rc = 0;
3103
3104         QETH_CARD_TEXT(card, 4, "qethopen");
3105         if (card->state == CARD_STATE_UP)
3106                 return rc;
3107         if (card->state != CARD_STATE_SOFTSETUP)
3108                 return -ENODEV;
3109         card->data.state = CH_STATE_UP;
3110         card->state = CARD_STATE_UP;
3111         netif_start_queue(dev);
3112
3113         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3114                 napi_enable(&card->napi);
3115                 napi_schedule(&card->napi);
3116         } else
3117                 rc = -EIO;
3118         return rc;
3119 }
3120
3121 static int qeth_l3_open(struct net_device *dev)
3122 {
3123         struct qeth_card *card = dev->ml_priv;
3124
3125         QETH_CARD_TEXT(card, 5, "qethope_");
3126         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3127                 QETH_CARD_TEXT(card, 3, "openREC");
3128                 return -ERESTARTSYS;
3129         }
3130         return __qeth_l3_open(dev);
3131 }
3132
3133 static int qeth_l3_stop(struct net_device *dev)
3134 {
3135         struct qeth_card *card = dev->ml_priv;
3136
3137         QETH_CARD_TEXT(card, 4, "qethstop");
3138         netif_tx_disable(dev);
3139         if (card->state == CARD_STATE_UP) {
3140                 card->state = CARD_STATE_SOFTSETUP;
3141                 napi_disable(&card->napi);
3142         }
3143         return 0;
3144 }
3145
3146 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3147         netdev_features_t features)
3148 {
3149         struct qeth_card *card = dev->ml_priv;
3150
3151         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3152                 features &= ~NETIF_F_IP_CSUM;
3153         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3154                 features &= ~NETIF_F_TSO;
3155         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3156                 features &= ~NETIF_F_RXCSUM;
3157
3158         return features;
3159 }
3160
3161 static int qeth_l3_set_features(struct net_device *dev,
3162         netdev_features_t features)
3163 {
3164         struct qeth_card *card = dev->ml_priv;
3165         u32 changed = dev->features ^ features;
3166         int err;
3167
3168         if (!(changed & NETIF_F_RXCSUM))
3169                 return 0;
3170
3171         if (card->state == CARD_STATE_DOWN ||
3172             card->state == CARD_STATE_RECOVER)
3173                 return 0;
3174
3175         err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3176         if (err)
3177                 dev->features = features ^ NETIF_F_RXCSUM;
3178
3179         return err;
3180 }
3181
3182 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3183         .get_link = ethtool_op_get_link,
3184         .get_strings = qeth_core_get_strings,
3185         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3186         .get_sset_count = qeth_core_get_sset_count,
3187         .get_drvinfo = qeth_core_get_drvinfo,
3188         .get_settings = qeth_core_ethtool_get_settings,
3189 };
3190
3191 /*
3192  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3193  * NOARP on the netdevice is no option because it also turns off neighbor
3194  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3195  * arp resolution but we want the hard header (packet socket will work
3196  * e.g. tcpdump)
3197  */
3198 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3199 {
3200         n->nud_state = NUD_NOARP;
3201         memcpy(n->ha, "FAKELL", 6);
3202         n->output = n->ops->connected_output;
3203         return 0;
3204 }
3205
3206 static int
3207 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3208 {
3209         if (np->tbl->family == AF_INET)
3210                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3211
3212         return 0;
3213 }
3214
3215 static const struct net_device_ops qeth_l3_netdev_ops = {
3216         .ndo_open               = qeth_l3_open,
3217         .ndo_stop               = qeth_l3_stop,
3218         .ndo_get_stats          = qeth_get_stats,
3219         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3220         .ndo_validate_addr      = eth_validate_addr,
3221         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3222         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3223         .ndo_change_mtu         = qeth_change_mtu,
3224         .ndo_fix_features       = qeth_l3_fix_features,
3225         .ndo_set_features       = qeth_l3_set_features,
3226         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3227         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3228         .ndo_tx_timeout         = qeth_tx_timeout,
3229 };
3230
3231 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3232         .ndo_open               = qeth_l3_open,
3233         .ndo_stop               = qeth_l3_stop,
3234         .ndo_get_stats          = qeth_get_stats,
3235         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3236         .ndo_validate_addr      = eth_validate_addr,
3237         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3238         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3239         .ndo_change_mtu         = qeth_change_mtu,
3240         .ndo_fix_features       = qeth_l3_fix_features,
3241         .ndo_set_features       = qeth_l3_set_features,
3242         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3243         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3244         .ndo_tx_timeout         = qeth_tx_timeout,
3245         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3246 };
3247
3248 static int qeth_l3_setup_netdev(struct qeth_card *card)
3249 {
3250         if (card->info.type == QETH_CARD_TYPE_OSD ||
3251             card->info.type == QETH_CARD_TYPE_OSX) {
3252                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3253                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3254                         pr_info("qeth_l3: ignoring TR device\n");
3255                         return -ENODEV;
3256                 } else {
3257                         card->dev = alloc_etherdev(0);
3258                         if (!card->dev)
3259                                 return -ENODEV;
3260                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3261
3262                         /*IPv6 address autoconfiguration stuff*/
3263                         qeth_l3_get_unique_id(card);
3264                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3265                                 card->dev->dev_id = card->info.unique_id &
3266                                                          0xffff;
3267                         if (!card->info.guestlan) {
3268                                 card->dev->hw_features = NETIF_F_SG |
3269                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3270                                         NETIF_F_TSO;
3271                                 card->dev->features = NETIF_F_RXCSUM;
3272                         }
3273                 }
3274         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3275                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3276                 if (!card->dev)
3277                         return -ENODEV;
3278                 card->dev->flags |= IFF_NOARP;
3279                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3280                 qeth_l3_iqd_read_initial_mac(card);
3281                 if (card->options.hsuid[0])
3282                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3283         } else
3284                 return -ENODEV;
3285
3286         card->dev->ml_priv = card;
3287         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3288         card->dev->mtu = card->info.initial_mtu;
3289         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3290         card->dev->features |=  NETIF_F_HW_VLAN_TX |
3291                                 NETIF_F_HW_VLAN_RX |
3292                                 NETIF_F_HW_VLAN_FILTER;
3293         card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3294         card->dev->gso_max_size = 15 * PAGE_SIZE;
3295
3296         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3297         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3298         return register_netdev(card->dev);
3299 }
3300
3301 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3302 {
3303         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3304
3305         qeth_l3_create_device_attributes(&gdev->dev);
3306         card->options.layer2 = 0;
3307         card->info.hwtrap = 0;
3308         return 0;
3309 }
3310
3311 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3312 {
3313         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3314
3315         qeth_l3_remove_device_attributes(&cgdev->dev);
3316
3317         qeth_set_allowed_threads(card, 0, 1);
3318         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3319
3320         if (cgdev->state == CCWGROUP_ONLINE)
3321                 qeth_l3_set_offline(cgdev);
3322
3323         if (card->dev) {
3324                 unregister_netdev(card->dev);
3325                 card->dev = NULL;
3326         }
3327
3328         qeth_l3_clear_ip_list(card, 0);
3329         qeth_l3_clear_ipato_list(card);
3330         return;
3331 }
3332
3333 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3334 {
3335         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3336         int rc = 0;
3337         enum qeth_card_states recover_flag;
3338
3339         mutex_lock(&card->discipline_mutex);
3340         mutex_lock(&card->conf_mutex);
3341         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3342         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3343
3344         recover_flag = card->state;
3345         rc = qeth_core_hardsetup_card(card);
3346         if (rc) {
3347                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3348                 rc = -ENODEV;
3349                 goto out_remove;
3350         }
3351
3352         if (!card->dev && qeth_l3_setup_netdev(card)) {
3353                 rc = -ENODEV;
3354                 goto out_remove;
3355         }
3356
3357         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3358                 if (card->info.hwtrap &&
3359                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3360                         card->info.hwtrap = 0;
3361         } else
3362                 card->info.hwtrap = 0;
3363
3364         card->state = CARD_STATE_HARDSETUP;
3365         memset(&card->rx, 0, sizeof(struct qeth_rx));
3366         qeth_print_status_message(card);
3367
3368         /* softsetup */
3369         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3370
3371         rc = qeth_send_startlan(card);
3372         if (rc) {
3373                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3374                 if (rc == 0xe080) {
3375                         dev_warn(&card->gdev->dev,
3376                                 "The LAN is offline\n");
3377                         card->lan_online = 0;
3378                         goto contin;
3379                 }
3380                 rc = -ENODEV;
3381                 goto out_remove;
3382         } else
3383                 card->lan_online = 1;
3384
3385 contin:
3386         rc = qeth_l3_setadapter_parms(card);
3387         if (rc)
3388                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3389         if (!card->options.sniffer) {
3390                 rc = qeth_l3_start_ipassists(card);
3391                 if (rc) {
3392                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3393                         goto out_remove;
3394                 }
3395                 rc = qeth_l3_setrouting_v4(card);
3396                 if (rc)
3397                         QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3398                 rc = qeth_l3_setrouting_v6(card);
3399                 if (rc)
3400                         QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3401         }
3402         netif_tx_disable(card->dev);
3403
3404         rc = qeth_init_qdio_queues(card);
3405         if (rc) {
3406                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3407                 rc = -ENODEV;
3408                 goto out_remove;
3409         }
3410         card->state = CARD_STATE_SOFTSETUP;
3411
3412         qeth_set_allowed_threads(card, 0xffffffff, 0);
3413         qeth_l3_set_ip_addr_list(card);
3414         if (card->lan_online)
3415                 netif_carrier_on(card->dev);
3416         else
3417                 netif_carrier_off(card->dev);
3418         if (recover_flag == CARD_STATE_RECOVER) {
3419                 rtnl_lock();
3420                 if (recovery_mode)
3421                         __qeth_l3_open(card->dev);
3422                 else
3423                         dev_open(card->dev);
3424                 qeth_l3_set_multicast_list(card->dev);
3425                 rtnl_unlock();
3426         }
3427         qeth_trace_features(card);
3428         /* let user_space know that device is online */
3429         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3430         mutex_unlock(&card->conf_mutex);
3431         mutex_unlock(&card->discipline_mutex);
3432         return 0;
3433 out_remove:
3434         qeth_l3_stop_card(card, 0);
3435         ccw_device_set_offline(CARD_DDEV(card));
3436         ccw_device_set_offline(CARD_WDEV(card));
3437         ccw_device_set_offline(CARD_RDEV(card));
3438         if (recover_flag == CARD_STATE_RECOVER)
3439                 card->state = CARD_STATE_RECOVER;
3440         else
3441                 card->state = CARD_STATE_DOWN;
3442         mutex_unlock(&card->conf_mutex);
3443         mutex_unlock(&card->discipline_mutex);
3444         return rc;
3445 }
3446
3447 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3448 {
3449         return __qeth_l3_set_online(gdev, 0);
3450 }
3451
3452 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3453                         int recovery_mode)
3454 {
3455         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3456         int rc = 0, rc2 = 0, rc3 = 0;
3457         enum qeth_card_states recover_flag;
3458
3459         mutex_lock(&card->discipline_mutex);
3460         mutex_lock(&card->conf_mutex);
3461         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3462         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3463
3464         if (card->dev && netif_carrier_ok(card->dev))
3465                 netif_carrier_off(card->dev);
3466         recover_flag = card->state;
3467         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3468                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3469                 card->info.hwtrap = 1;
3470         }
3471         qeth_l3_stop_card(card, recovery_mode);
3472         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3473                 rtnl_lock();
3474                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3475                 rtnl_unlock();
3476         }
3477         rc  = ccw_device_set_offline(CARD_DDEV(card));
3478         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3479         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3480         if (!rc)
3481                 rc = (rc2) ? rc2 : rc3;
3482         if (rc)
3483                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3484         if (recover_flag == CARD_STATE_UP)
3485                 card->state = CARD_STATE_RECOVER;
3486         /* let user_space know that device is offline */
3487         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3488         mutex_unlock(&card->conf_mutex);
3489         mutex_unlock(&card->discipline_mutex);
3490         return 0;
3491 }
3492
3493 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3494 {
3495         return __qeth_l3_set_offline(cgdev, 0);
3496 }
3497
3498 static int qeth_l3_recover(void *ptr)
3499 {
3500         struct qeth_card *card;
3501         int rc = 0;
3502
3503         card = (struct qeth_card *) ptr;
3504         QETH_CARD_TEXT(card, 2, "recover1");
3505         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3506         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3507                 return 0;
3508         QETH_CARD_TEXT(card, 2, "recover2");
3509         dev_warn(&card->gdev->dev,
3510                 "A recovery process has been started for the device\n");
3511         __qeth_l3_set_offline(card->gdev, 1);
3512         rc = __qeth_l3_set_online(card->gdev, 1);
3513         if (!rc)
3514                 dev_info(&card->gdev->dev,
3515                         "Device successfully recovered!\n");
3516         else {
3517                 qeth_close_dev(card);
3518                 dev_warn(&card->gdev->dev, "The qeth device driver "
3519                                 "failed to recover an error on the device\n");
3520         }
3521         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3522         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3523         return 0;
3524 }
3525
3526 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3527 {
3528         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3529         qeth_set_allowed_threads(card, 0, 1);
3530         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3531                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3532         qeth_qdio_clear_card(card, 0);
3533         qeth_clear_qdio_buffers(card);
3534 }
3535
3536 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3537 {
3538         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3539
3540         if (card->dev)
3541                 netif_device_detach(card->dev);
3542         qeth_set_allowed_threads(card, 0, 1);
3543         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3544         if (gdev->state == CCWGROUP_OFFLINE)
3545                 return 0;
3546         if (card->state == CARD_STATE_UP) {
3547                 if (card->info.hwtrap)
3548                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3549                 __qeth_l3_set_offline(card->gdev, 1);
3550         } else
3551                 __qeth_l3_set_offline(card->gdev, 0);
3552         return 0;
3553 }
3554
3555 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3556 {
3557         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3558         int rc = 0;
3559
3560         if (gdev->state == CCWGROUP_OFFLINE)
3561                 goto out;
3562
3563         if (card->state == CARD_STATE_RECOVER) {
3564                 rc = __qeth_l3_set_online(card->gdev, 1);
3565                 if (rc) {
3566                         rtnl_lock();
3567                         dev_close(card->dev);
3568                         rtnl_unlock();
3569                 }
3570         } else
3571                 rc = __qeth_l3_set_online(card->gdev, 0);
3572 out:
3573         qeth_set_allowed_threads(card, 0xffffffff, 0);
3574         if (card->dev)
3575                 netif_device_attach(card->dev);
3576         if (rc)
3577                 dev_warn(&card->gdev->dev, "The qeth device driver "
3578                         "failed to recover an error on the device\n");
3579         return rc;
3580 }
3581
3582 struct qeth_discipline qeth_l3_discipline = {
3583         .start_poll = qeth_qdio_start_poll,
3584         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3585         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3586         .recover = qeth_l3_recover,
3587         .setup = qeth_l3_probe_device,
3588         .remove = qeth_l3_remove_device,
3589         .set_online = qeth_l3_set_online,
3590         .set_offline = qeth_l3_set_offline,
3591         .shutdown = qeth_l3_shutdown,
3592         .freeze = qeth_l3_pm_suspend,
3593         .thaw = qeth_l3_pm_resume,
3594         .restore = qeth_l3_pm_resume,
3595 };
3596 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3597
3598 static int qeth_l3_ip_event(struct notifier_block *this,
3599                             unsigned long event, void *ptr)
3600 {
3601         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3602         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3603         struct qeth_ipaddr *addr;
3604         struct qeth_card *card;
3605
3606         if (dev_net(dev) != &init_net)
3607                 return NOTIFY_DONE;
3608
3609         card = qeth_l3_get_card_from_dev(dev);
3610         if (!card)
3611                 return NOTIFY_DONE;
3612         QETH_CARD_TEXT(card, 3, "ipevent");
3613
3614         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3615         if (addr != NULL) {
3616                 addr->u.a4.addr = ifa->ifa_address;
3617                 addr->u.a4.mask = ifa->ifa_mask;
3618                 addr->type = QETH_IP_TYPE_NORMAL;
3619         } else
3620                 goto out;
3621
3622         switch (event) {
3623         case NETDEV_UP:
3624                 if (!qeth_l3_add_ip(card, addr))
3625                         kfree(addr);
3626                 break;
3627         case NETDEV_DOWN:
3628                 if (!qeth_l3_delete_ip(card, addr))
3629                         kfree(addr);
3630                 break;
3631         default:
3632                 break;
3633         }
3634         qeth_l3_set_ip_addr_list(card);
3635 out:
3636         return NOTIFY_DONE;
3637 }
3638
3639 static struct notifier_block qeth_l3_ip_notifier = {
3640         qeth_l3_ip_event,
3641         NULL,
3642 };
3643
3644 #ifdef CONFIG_QETH_IPV6
3645 /**
3646  * IPv6 event handler
3647  */
3648 static int qeth_l3_ip6_event(struct notifier_block *this,
3649                              unsigned long event, void *ptr)
3650 {
3651         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3652         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3653         struct qeth_ipaddr *addr;
3654         struct qeth_card *card;
3655
3656         card = qeth_l3_get_card_from_dev(dev);
3657         if (!card)
3658                 return NOTIFY_DONE;
3659         QETH_CARD_TEXT(card, 3, "ip6event");
3660         if (!qeth_is_supported(card, IPA_IPV6))
3661                 return NOTIFY_DONE;
3662
3663         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3664         if (addr != NULL) {
3665                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3666                 addr->u.a6.pfxlen = ifa->prefix_len;
3667                 addr->type = QETH_IP_TYPE_NORMAL;
3668         } else
3669                 goto out;
3670
3671         switch (event) {
3672         case NETDEV_UP:
3673                 if (!qeth_l3_add_ip(card, addr))
3674                         kfree(addr);
3675                 break;
3676         case NETDEV_DOWN:
3677                 if (!qeth_l3_delete_ip(card, addr))
3678                         kfree(addr);
3679                 break;
3680         default:
3681                 break;
3682         }
3683         qeth_l3_set_ip_addr_list(card);
3684 out:
3685         return NOTIFY_DONE;
3686 }
3687
3688 static struct notifier_block qeth_l3_ip6_notifier = {
3689         qeth_l3_ip6_event,
3690         NULL,
3691 };
3692 #endif
3693
3694 static int qeth_l3_register_notifiers(void)
3695 {
3696         int rc;
3697
3698         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3699         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3700         if (rc)
3701                 return rc;
3702 #ifdef CONFIG_QETH_IPV6
3703         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3704         if (rc) {
3705                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3706                 return rc;
3707         }
3708 #else
3709         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3710 #endif
3711         return 0;
3712 }
3713
3714 static void qeth_l3_unregister_notifiers(void)
3715 {
3716
3717         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3718         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3719 #ifdef CONFIG_QETH_IPV6
3720         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3721 #endif /* QETH_IPV6 */
3722 }
3723
3724 static int __init qeth_l3_init(void)
3725 {
3726         int rc = 0;
3727
3728         pr_info("register layer 3 discipline\n");
3729         rc = qeth_l3_register_notifiers();
3730         return rc;
3731 }
3732
3733 static void __exit qeth_l3_exit(void)
3734 {
3735         qeth_l3_unregister_notifiers();
3736         pr_info("unregister layer 3 discipline\n");
3737 }
3738
3739 module_init(qeth_l3_init);
3740 module_exit(qeth_l3_exit);
3741 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3742 MODULE_DESCRIPTION("qeth layer 3 discipline");
3743 MODULE_LICENSE("GPL");