kernel/drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/bitops.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/mii.h>
  20 #include <linux/ip.h>
  21 #include <linux/ipv6.h>
  22 #include <linux/inetdevice.h>
  23 #include <linux/igmp.h>
  24 #include <linux/slab.h>
  25 #include <linux/if_vlan.h>
  26
  27 #include <net/ip.h>
  28 #include <net/arp.h>
  29 #include <net/route.h>
  30 #include <net/ip6_fib.h>
  31 #include <net/ip6_checksum.h>
  32 #include <net/iucv/af_iucv.h>
  33
  34 #include "qeth_l3.h"
  35
  36
  37 static int qeth_l3_set_offline(struct ccwgroup_device *);
  38 static int qeth_l3_recover(void *);
  39 static int qeth_l3_stop(struct net_device *);
  40 static void qeth_l3_set_multicast_list(struct net_device *);
  41 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  42 static int qeth_l3_register_addr_entry(struct qeth_card *,
  43                 struct qeth_ipaddr *);
  44 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  45                 struct qeth_ipaddr *);
  46 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  47 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  48
  49 static int qeth_l3_isxdigit(char *buf)
  50 {
  51         while (*buf) {
  52                 if (!isxdigit(*buf++))
  53                         return 0;
  54         }
  55         return 1;
  56 }
  57
  58 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  59 {
  60         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
  61 }
  62
  63 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  64 {
  65         int count = 0, rc = 0;
  66         unsigned int in[4];
  67         char c;
  68
  69         rc = sscanf(buf, "%u.%u.%u.%u%c",
  70                     &in[0], &in[1], &in[2], &in[3], &c);
  71         if (rc != 4 && (rc != 5 || c != '\n'))
  72                 return -EINVAL;
  73         for (count = 0; count < 4; count++) {
  74                 if (in[count] > 255)
  75                         return -EINVAL;
  76                 addr[count] = in[count];
  77         }
  78         return 0;
  79 }
  80
  81 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  82 {
  83         sprintf(buf, "%pI6", addr);
  84 }
  85
  86 static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  87 {
  88         const char *end, *end_tmp, *start;
  89         __u16 *in;
  90         char num[5];
  91         int num2, cnt, out, found, save_cnt;
  92         unsigned short in_tmp[8] = {0, };
  93
  94         cnt = out = found = save_cnt = num2 = 0;
  95         end = start = buf;
  96         in = (__u16 *) addr;
  97         memset(in, 0, 16);
  98         while (*end) {
  99                 end = strchr(start, ':');
 100                 if (end == NULL) {
 101                         end = buf + strlen(buf);
 102                         end_tmp = strchr(start, '\n');
 103                         if (end_tmp != NULL)
 104                                 end = end_tmp;
 105                         out = 1;
 106                 }
 107                 if ((end - start)) {
 108                         memset(num, 0, 5);
 109                         if ((end - start) > 4)
 110                                 return -EINVAL;
 111                         memcpy(num, start, end - start);
 112                         if (!qeth_l3_isxdigit(num))
 113                                 return -EINVAL;
 114                         sscanf(start, "%x", &num2);
 115                         if (found)
 116                                 in_tmp[save_cnt++] = num2;
 117                         else
 118                                 in[cnt++] = num2;
 119                         if (out)
 120                                 break;
 121                 } else {
 122                         if (found)
 123                                 return -EINVAL;
 124                         found = 1;
 125                 }
 126                 start = ++end;
 127         }
 128         if (cnt + save_cnt > 8)
 129                 return -EINVAL;
 130         cnt = 7;
 131         while (save_cnt)
 132                 in[cnt--] = in_tmp[--save_cnt];
 133         return 0;
 134 }
 135
 136 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 137                                 char *buf)
 138 {
 139         if (proto == QETH_PROT_IPV4)
 140                 qeth_l3_ipaddr4_to_string(addr, buf);
 141         else if (proto == QETH_PROT_IPV6)
 142                 qeth_l3_ipaddr6_to_string(addr, buf);
 143 }
 144
 145 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 146                                 __u8 *addr)
 147 {
 148         if (proto == QETH_PROT_IPV4)
 149                 return qeth_l3_string_to_ipaddr4(buf, addr);
 150         else if (proto == QETH_PROT_IPV6)
 151                 return qeth_l3_string_to_ipaddr6(buf, addr);
 152         else
 153                 return -EINVAL;
 154 }
 155
 156 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 157 {
 158         int i, j;
 159         u8 octet;
 160
 161         for (i = 0; i < len; ++i) {
 162                 octet = addr[i];
 163                 for (j = 7; j >= 0; --j) {
 164                         bits[i*8 + j] = octet & 1;
 165                         octet >>= 1;
 166                 }
 167         }
 168 }
 169
 170 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 171                                                 struct qeth_ipaddr *addr)
 172 {
 173         struct qeth_ipato_entry *ipatoe;
 174         u8 addr_bits[128] = {0, };
 175         u8 ipatoe_bits[128] = {0, };
 176         int rc = 0;
 177
 178         if (!card->ipato.enabled)
 179                 return 0;
 180
 181         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 182                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 183         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 184                 if (addr->proto != ipatoe->proto)
 185                         continue;
 186                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 187                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 188                                           4 : 16);
 189                 if (addr->proto == QETH_PROT_IPV4)
 190                         rc = !memcmp(addr_bits, ipatoe_bits,
 191                                      min(32, ipatoe->mask_bits));
 192                 else
 193                         rc = !memcmp(addr_bits, ipatoe_bits,
 194                                      min(128, ipatoe->mask_bits));
 195                 if (rc)
 196                         break;
 197         }
 198         /* invert? */
 199         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 200                 rc = !rc;
 201         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 202                 rc = !rc;
 203
 204         return rc;
 205 }
 206
 207 /*
 208  * Add IP to be added to todo list. If there is already an "add todo"
 209  * in this list we just incremenent the reference count.
 210  * Returns 0 if we  just incremented reference count.
 211  */
 212 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
 213                                         struct qeth_ipaddr *addr, int add)
 214 {
 215         struct qeth_ipaddr *tmp, *t;
 216         int found = 0;
 217
 218         if (card->options.sniffer)
 219                 return 0;
 220         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
 221                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
 222                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
 223                         return 0;
 224                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
 225                     (addr->proto       == QETH_PROT_IPV4)     &&
 226                     (tmp->type         == addr->type)         &&
 227                     (tmp->is_multicast == addr->is_multicast) &&
 228                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
 229                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
 230                         found = 1;
 231                         break;
 232                 }
 233                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
 234                     (addr->proto       == QETH_PROT_IPV6)      &&
 235                     (tmp->type         == addr->type)          &&
 236                     (tmp->is_multicast == addr->is_multicast)  &&
 237                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
 238                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 239                             sizeof(struct in6_addr)) == 0)) {
 240                         found = 1;
 241                         break;
 242                 }
 243         }
 244         if (found) {
 245                 if (addr->users != 0)
 246                         tmp->users += addr->users;
 247                 else
 248                         tmp->users += add ? 1 : -1;
 249                 if (tmp->users == 0) {
 250                         list_del(&tmp->entry);
 251                         kfree(tmp);
 252                 }
 253                 return 0;
 254         } else {
 255                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
 256                         list_add(&addr->entry, card->ip_tbd_list);
 257                 else {
 258                         if (addr->users == 0)
 259                                 addr->users += add ? 1 : -1;
 260                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
 261                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 262                                 QETH_CARD_TEXT(card, 2, "tkovaddr");
 263                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 264                         }
 265                         list_add_tail(&addr->entry, card->ip_tbd_list);
 266                 }
 267                 return 1;
 268         }
 269 }
 270
 271 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 272 {
 273         unsigned long flags;
 274         int rc = 0;
 275
 276         QETH_CARD_TEXT(card, 4, "delip");
 277
 278         if (addr->proto == QETH_PROT_IPV4)
 279                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 280         else {
 281                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 282                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 283         }
 284         spin_lock_irqsave(&card->ip_lock, flags);
 285         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
 286         spin_unlock_irqrestore(&card->ip_lock, flags);
 287         return rc;
 288 }
 289
 290 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 291 {
 292         unsigned long flags;
 293         int rc = 0;
 294
 295         QETH_CARD_TEXT(card, 4, "addip");
 296         if (addr->proto == QETH_PROT_IPV4)
 297                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 298         else {
 299                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 300                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 301         }
 302         spin_lock_irqsave(&card->ip_lock, flags);
 303         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
 304         spin_unlock_irqrestore(&card->ip_lock, flags);
 305         return rc;
 306 }
 307
 308
 309 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 310                                 enum qeth_prot_versions prot)
 311 {
 312         struct qeth_ipaddr *addr;
 313
 314         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 315         if (addr == NULL) {
 316                 return NULL;
 317         }
 318         addr->type = QETH_IP_TYPE_NORMAL;
 319         addr->proto = prot;
 320         return addr;
 321 }
 322
 323 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
 324 {
 325         struct qeth_ipaddr *iptodo;
 326         unsigned long flags;
 327
 328         QETH_CARD_TEXT(card, 4, "delmc");
 329         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
 330         if (!iptodo) {
 331                 QETH_CARD_TEXT(card, 2, "dmcnomem");
 332                 return;
 333         }
 334         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
 335         spin_lock_irqsave(&card->ip_lock, flags);
 336         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
 337                 kfree(iptodo);
 338         spin_unlock_irqrestore(&card->ip_lock, flags);
 339 }
 340
 341 /*
 342  * Add/remove address to/from card's ip list, i.e. try to add or remove
 343  * reference to/from an IP address that is already registered on the card.
 344  * Returns:
 345  *      0  address was on card and its reference count has been adjusted,
 346  *         but is still > 0, so nothing has to be done
 347  *         also returns 0 if card was not on card and the todo was to delete
 348  *         the address -> there is also nothing to be done
 349  *      1  address was not on card and the todo is to add it to the card's ip
 350  *         list
 351  *      -1 address was on card and its reference count has been decremented
 352  *         to <= 0 by the todo -> address must be removed from card
 353  */
 354 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
 355                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
 356 {
 357         struct qeth_ipaddr *addr;
 358         int found = 0;
 359
 360         list_for_each_entry(addr, &card->ip_list, entry) {
 361                 if ((addr->proto == QETH_PROT_IPV4) &&
 362                     (todo->proto == QETH_PROT_IPV4) &&
 363                     (addr->type == todo->type) &&
 364                     (addr->u.a4.addr == todo->u.a4.addr) &&
 365                     (addr->u.a4.mask == todo->u.a4.mask)) {
 366                         found = 1;
 367                         break;
 368                 }
 369                 if ((addr->proto == QETH_PROT_IPV6) &&
 370                     (todo->proto == QETH_PROT_IPV6) &&
 371                     (addr->type == todo->type) &&
 372                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
 373                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
 374                             sizeof(struct in6_addr)) == 0)) {
 375                         found = 1;
 376                         break;
 377                 }
 378         }
 379         if (found) {
 380                 addr->users += todo->users;
 381                 if (addr->users <= 0) {
 382                         *__addr = addr;
 383                         return -1;
 384                 } else {
 385                         /* for VIPA and RXIP limit refcount to 1 */
 386                         if (addr->type != QETH_IP_TYPE_NORMAL)
 387                                 addr->users = 1;
 388                         return 0;
 389                 }
 390         }
 391         if (todo->users > 0) {
 392                 /* for VIPA and RXIP limit refcount to 1 */
 393                 if (todo->type != QETH_IP_TYPE_NORMAL)
 394                         todo->users = 1;
 395                 return 1;
 396         } else
 397                 return 0;
 398 }
 399
 400 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
 401                                         unsigned long *flags)
 402 {
 403         struct list_head fail_list;
 404         struct qeth_ipaddr *addr, *tmp;
 405         int rc;
 406
 407         INIT_LIST_HEAD(&fail_list);
 408 again:
 409         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
 410                 if (addr->is_multicast) {
 411                         list_del(&addr->entry);
 412                         spin_unlock_irqrestore(&card->ip_lock, *flags);
 413                         rc = qeth_l3_deregister_addr_entry(card, addr);
 414                         spin_lock_irqsave(&card->ip_lock, *flags);
 415                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
 416                                 kfree(addr);
 417                         else
 418                                 list_add_tail(&addr->entry, &fail_list);
 419                         goto again;
 420                 }
 421         }
 422         list_splice(&fail_list, &card->ip_list);
 423 }
 424
 425 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
 426 {
 427         struct list_head *tbd_list;
 428         struct qeth_ipaddr *todo, *addr;
 429         unsigned long flags;
 430         int rc;
 431
 432         QETH_CARD_TEXT(card, 2, "sdiplist");
 433         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
 434
 435         if (!qeth_card_hw_is_reachable(card) || card->options.sniffer)
 436                 return;
 437
 438         spin_lock_irqsave(&card->ip_lock, flags);
 439         tbd_list = card->ip_tbd_list;
 440         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
 441         if (!card->ip_tbd_list) {
 442                 QETH_CARD_TEXT(card, 0, "silnomem");
 443                 card->ip_tbd_list = tbd_list;
 444                 spin_unlock_irqrestore(&card->ip_lock, flags);
 445                 return;
 446         } else
 447                 INIT_LIST_HEAD(card->ip_tbd_list);
 448
 449         while (!list_empty(tbd_list)) {
 450                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
 451                 list_del(&todo->entry);
 452                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
 453                         __qeth_l3_delete_all_mc(card, &flags);
 454                         kfree(todo);
 455                         continue;
 456                 }
 457                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
 458                 if (rc == 0) {
 459                         /* nothing to be done; only adjusted refcount */
 460                         kfree(todo);
 461                 } else if (rc == 1) {
 462                         /* new entry to be added to on-card list */
 463                         spin_unlock_irqrestore(&card->ip_lock, flags);
 464                         rc = qeth_l3_register_addr_entry(card, todo);
 465                         spin_lock_irqsave(&card->ip_lock, flags);
 466                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
 467                                 list_add_tail(&todo->entry, &card->ip_list);
 468                         else
 469                                 kfree(todo);
 470                 } else if (rc == -1) {
 471                         /* on-card entry to be removed */
 472                         list_del_init(&addr->entry);
 473                         spin_unlock_irqrestore(&card->ip_lock, flags);
 474                         rc = qeth_l3_deregister_addr_entry(card, addr);
 475                         spin_lock_irqsave(&card->ip_lock, flags);
 476                         if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
 477                                 kfree(addr);
 478                         else
 479                                 list_add_tail(&addr->entry, &card->ip_list);
 480                         kfree(todo);
 481                 }
 482         }
 483         spin_unlock_irqrestore(&card->ip_lock, flags);
 484         kfree(tbd_list);
 485 }
 486
 487 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
 488 {
 489         struct qeth_ipaddr *addr, *tmp;
 490         unsigned long flags;
 491
 492         QETH_CARD_TEXT(card, 4, "clearip");
 493         if (recover && card->options.sniffer)
 494                 return;
 495         spin_lock_irqsave(&card->ip_lock, flags);
 496         /* clear todo list */
 497         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
 498                 list_del(&addr->entry);
 499                 kfree(addr);
 500         }
 501
 502         while (!list_empty(&card->ip_list)) {
 503                 addr = list_entry(card->ip_list.next,
 504                                   struct qeth_ipaddr, entry);
 505                 list_del_init(&addr->entry);
 506                 if (!recover || addr->is_multicast) {
 507                         kfree(addr);
 508                         continue;
 509                 }
 510                 list_add_tail(&addr->entry, card->ip_tbd_list);
 511         }
 512         spin_unlock_irqrestore(&card->ip_lock, flags);
 513 }
 514
 515 static int qeth_l3_address_exists_in_list(struct list_head *list,
 516                 struct qeth_ipaddr *addr, int same_type)
 517 {
 518         struct qeth_ipaddr *tmp;
 519
 520         list_for_each_entry(tmp, list, entry) {
 521                 if ((tmp->proto == QETH_PROT_IPV4) &&
 522                     (addr->proto == QETH_PROT_IPV4) &&
 523                     ((same_type && (tmp->type == addr->type)) ||
 524                     (!same_type && (tmp->type != addr->type))) &&
 525                     (tmp->u.a4.addr == addr->u.a4.addr))
 526                         return 1;
 527
 528                 if ((tmp->proto == QETH_PROT_IPV6) &&
 529                     (addr->proto == QETH_PROT_IPV6) &&
 530                     ((same_type && (tmp->type == addr->type)) ||
 531                     (!same_type && (tmp->type != addr->type))) &&
 532                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 533                             sizeof(struct in6_addr)) == 0))
 534                         return 1;
 535
 536         }
 537         return 0;
 538 }
 539
 540 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 541                         struct qeth_ipaddr *addr, int ipacmd)
 542 {
 543         int rc;
 544         struct qeth_cmd_buffer *iob;
 545         struct qeth_ipa_cmd *cmd;
 546
 547         QETH_CARD_TEXT(card, 4, "setdelmc");
 548
 549         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 550         if (!iob)
 551                 return -ENOMEM;
 552         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 553         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 554         if (addr->proto == QETH_PROT_IPV6)
 555                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 556                        sizeof(struct in6_addr));
 557         else
 558                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 559
 560         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 561
 562         return rc;
 563 }
 564
 565 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 566 {
 567         int i, j;
 568         for (i = 0; i < 16; i++) {
 569                 j = (len) - (i * 8);
 570                 if (j >= 8)
 571                         netmask[i] = 0xff;
 572                 else if (j > 0)
 573                         netmask[i] = (u8)(0xFF00 >> j);
 574                 else
 575                         netmask[i] = 0;
 576         }
 577 }
 578
 579 static int qeth_l3_send_setdelip(struct qeth_card *card,
 580                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 581 {
 582         int rc;
 583         struct qeth_cmd_buffer *iob;
 584         struct qeth_ipa_cmd *cmd;
 585         __u8 netmask[16];
 586
 587         QETH_CARD_TEXT(card, 4, "setdelip");
 588         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 589
 590         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 591         if (!iob)
 592                 return -ENOMEM;
 593         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 594         if (addr->proto == QETH_PROT_IPV6) {
 595                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 596                        sizeof(struct in6_addr));
 597                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 598                 memcpy(cmd->data.setdelip6.mask, netmask,
 599                        sizeof(struct in6_addr));
 600                 cmd->data.setdelip6.flags = flags;
 601         } else {
 602                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 603                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 604                 cmd->data.setdelip4.flags = flags;
 605         }
 606
 607         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 608
 609         return rc;
 610 }
 611
 612 static int qeth_l3_send_setrouting(struct qeth_card *card,
 613         enum qeth_routing_types type, enum qeth_prot_versions prot)
 614 {
 615         int rc;
 616         struct qeth_ipa_cmd *cmd;
 617         struct qeth_cmd_buffer *iob;
 618
 619         QETH_CARD_TEXT(card, 4, "setroutg");
 620         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 621         if (!iob)
 622                 return -ENOMEM;
 623         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 624         cmd->data.setrtg.type = (type);
 625         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 626
 627         return rc;
 628 }
 629
 630 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 631                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 632 {
 633         if (card->info.type == QETH_CARD_TYPE_IQD) {
 634                 switch (*type) {
 635                 case NO_ROUTER:
 636                 case PRIMARY_CONNECTOR:
 637                 case SECONDARY_CONNECTOR:
 638                 case MULTICAST_ROUTER:
 639                         return 0;
 640                 default:
 641                         goto out_inval;
 642                 }
 643         } else {
 644                 switch (*type) {
 645                 case NO_ROUTER:
 646                 case PRIMARY_ROUTER:
 647                 case SECONDARY_ROUTER:
 648                         return 0;
 649                 case MULTICAST_ROUTER:
 650                         if (qeth_is_ipafunc_supported(card, prot,
 651                                                       IPA_OSA_MC_ROUTER))
 652                                 return 0;
 653                 default:
 654                         goto out_inval;
 655                 }
 656         }
 657 out_inval:
 658         *type = NO_ROUTER;
 659         return -EINVAL;
 660 }
 661
 662 int qeth_l3_setrouting_v4(struct qeth_card *card)
 663 {
 664         int rc;
 665
 666         QETH_CARD_TEXT(card, 3, "setrtg4");
 667
 668         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 669                                   QETH_PROT_IPV4);
 670         if (rc)
 671                 return rc;
 672
 673         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 674                                   QETH_PROT_IPV4);
 675         if (rc) {
 676                 card->options.route4.type = NO_ROUTER;
 677                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 678                         " on %s. Type set to 'no router'.\n", rc,
 679                         QETH_CARD_IFNAME(card));
 680         }
 681         return rc;
 682 }
 683
 684 int qeth_l3_setrouting_v6(struct qeth_card *card)
 685 {
 686         int rc = 0;
 687
 688         QETH_CARD_TEXT(card, 3, "setrtg6");
 689 #ifdef CONFIG_QETH_IPV6
 690
 691         if (!qeth_is_supported(card, IPA_IPV6))
 692                 return 0;
 693         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 694                                   QETH_PROT_IPV6);
 695         if (rc)
 696                 return rc;
 697
 698         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 699                                   QETH_PROT_IPV6);
 700         if (rc) {
 701                 card->options.route6.type = NO_ROUTER;
 702                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 703                         " on %s. Type set to 'no router'.\n", rc,
 704                         QETH_CARD_IFNAME(card));
 705         }
 706 #endif
 707         return rc;
 708 }
 709
 710 /*
 711  * IP address takeover related functions
 712  */
 713 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 714 {
 715
 716         struct qeth_ipato_entry *ipatoe, *tmp;
 717         unsigned long flags;
 718
 719         spin_lock_irqsave(&card->ip_lock, flags);
 720         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 721                 list_del(&ipatoe->entry);
 722                 kfree(ipatoe);
 723         }
 724         spin_unlock_irqrestore(&card->ip_lock, flags);
 725 }
 726
 727 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 728                                 struct qeth_ipato_entry *new)
 729 {
 730         struct qeth_ipato_entry *ipatoe;
 731         unsigned long flags;
 732         int rc = 0;
 733
 734         QETH_CARD_TEXT(card, 2, "addipato");
 735         spin_lock_irqsave(&card->ip_lock, flags);
 736         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 737                 if (ipatoe->proto != new->proto)
 738                         continue;
 739                 if (!memcmp(ipatoe->addr, new->addr,
 740                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 741                     (ipatoe->mask_bits == new->mask_bits)) {
 742                         rc = -EEXIST;
 743                         break;
 744                 }
 745         }
 746         if (!rc)
 747                 list_add_tail(&new->entry, &card->ipato.entries);
 748
 749         spin_unlock_irqrestore(&card->ip_lock, flags);
 750         return rc;
 751 }
 752
 753 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 754                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 755 {
 756         struct qeth_ipato_entry *ipatoe, *tmp;
 757         unsigned long flags;
 758
 759         QETH_CARD_TEXT(card, 2, "delipato");
 760         spin_lock_irqsave(&card->ip_lock, flags);
 761         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 762                 if (ipatoe->proto != proto)
 763                         continue;
 764                 if (!memcmp(ipatoe->addr, addr,
 765                             (proto == QETH_PROT_IPV4)? 4:16) &&
 766                     (ipatoe->mask_bits == mask_bits)) {
 767                         list_del(&ipatoe->entry);
 768                         kfree(ipatoe);
 769                 }
 770         }
 771         spin_unlock_irqrestore(&card->ip_lock, flags);
 772 }
 773
 774 /*
 775  * VIPA related functions
 776  */
 777 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 778               const u8 *addr)
 779 {
 780         struct qeth_ipaddr *ipaddr;
 781         unsigned long flags;
 782         int rc = 0;
 783
 784         ipaddr = qeth_l3_get_addr_buffer(proto);
 785         if (ipaddr) {
 786                 if (proto == QETH_PROT_IPV4) {
 787                         QETH_CARD_TEXT(card, 2, "addvipa4");
 788                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 789                         ipaddr->u.a4.mask = 0;
 790                 } else if (proto == QETH_PROT_IPV6) {
 791                         QETH_CARD_TEXT(card, 2, "addvipa6");
 792                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 793                         ipaddr->u.a6.pfxlen = 0;
 794                 }
 795                 ipaddr->type = QETH_IP_TYPE_VIPA;
 796                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 797                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 798         } else
 799                 return -ENOMEM;
 800         spin_lock_irqsave(&card->ip_lock, flags);
 801         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 802             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 803                 rc = -EEXIST;
 804         spin_unlock_irqrestore(&card->ip_lock, flags);
 805         if (rc) {
 806                 kfree(ipaddr);
 807                 return rc;
 808         }
 809         if (!qeth_l3_add_ip(card, ipaddr))
 810                 kfree(ipaddr);
 811         qeth_l3_set_ip_addr_list(card);
 812         return rc;
 813 }
 814
 815 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 816               const u8 *addr)
 817 {
 818         struct qeth_ipaddr *ipaddr;
 819
 820         ipaddr = qeth_l3_get_addr_buffer(proto);
 821         if (ipaddr) {
 822                 if (proto == QETH_PROT_IPV4) {
 823                         QETH_CARD_TEXT(card, 2, "delvipa4");
 824                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 825                         ipaddr->u.a4.mask = 0;
 826                 } else if (proto == QETH_PROT_IPV6) {
 827                         QETH_CARD_TEXT(card, 2, "delvipa6");
 828                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 829                         ipaddr->u.a6.pfxlen = 0;
 830                 }
 831                 ipaddr->type = QETH_IP_TYPE_VIPA;
 832         } else
 833                 return;
 834         if (!qeth_l3_delete_ip(card, ipaddr))
 835                 kfree(ipaddr);
 836         qeth_l3_set_ip_addr_list(card);
 837 }
 838
 839 /*
 840  * proxy ARP related functions
 841  */
 842 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 843               const u8 *addr)
 844 {
 845         struct qeth_ipaddr *ipaddr;
 846         unsigned long flags;
 847         int rc = 0;
 848
 849         ipaddr = qeth_l3_get_addr_buffer(proto);
 850         if (ipaddr) {
 851                 if (proto == QETH_PROT_IPV4) {
 852                         QETH_CARD_TEXT(card, 2, "addrxip4");
 853                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 854                         ipaddr->u.a4.mask = 0;
 855                 } else if (proto == QETH_PROT_IPV6) {
 856                         QETH_CARD_TEXT(card, 2, "addrxip6");
 857                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 858                         ipaddr->u.a6.pfxlen = 0;
 859                 }
 860                 ipaddr->type = QETH_IP_TYPE_RXIP;
 861                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 862                 ipaddr->del_flags = 0;
 863         } else
 864                 return -ENOMEM;
 865         spin_lock_irqsave(&card->ip_lock, flags);
 866         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 867             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 868                 rc = -EEXIST;
 869         spin_unlock_irqrestore(&card->ip_lock, flags);
 870         if (rc) {
 871                 kfree(ipaddr);
 872                 return rc;
 873         }
 874         if (!qeth_l3_add_ip(card, ipaddr))
 875                 kfree(ipaddr);
 876         qeth_l3_set_ip_addr_list(card);
 877         return 0;
 878 }
 879
 880 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 881                         const u8 *addr)
 882 {
 883         struct qeth_ipaddr *ipaddr;
 884
 885         ipaddr = qeth_l3_get_addr_buffer(proto);
 886         if (ipaddr) {
 887                 if (proto == QETH_PROT_IPV4) {
 888                         QETH_CARD_TEXT(card, 2, "addrxip4");
 889                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 890                         ipaddr->u.a4.mask = 0;
 891                 } else if (proto == QETH_PROT_IPV6) {
 892                         QETH_CARD_TEXT(card, 2, "addrxip6");
 893                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 894                         ipaddr->u.a6.pfxlen = 0;
 895                 }
 896                 ipaddr->type = QETH_IP_TYPE_RXIP;
 897         } else
 898                 return;
 899         if (!qeth_l3_delete_ip(card, ipaddr))
 900                 kfree(ipaddr);
 901         qeth_l3_set_ip_addr_list(card);
 902 }
 903
 904 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 905                                 struct qeth_ipaddr *addr)
 906 {
 907         char buf[50];
 908         int rc = 0;
 909         int cnt = 3;
 910
 911         if (addr->proto == QETH_PROT_IPV4) {
 912                 QETH_CARD_TEXT(card, 2, "setaddr4");
 913                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 914         } else if (addr->proto == QETH_PROT_IPV6) {
 915                 QETH_CARD_TEXT(card, 2, "setaddr6");
 916                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 917                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 918         } else {
 919                 QETH_CARD_TEXT(card, 2, "setaddr?");
 920                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 921         }
 922         do {
 923                 if (addr->is_multicast)
 924                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 925                 else
 926                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 927                                         addr->set_flags);
 928                 if (rc)
 929                         QETH_CARD_TEXT(card, 2, "failed");
 930         } while ((--cnt > 0) && rc);
 931         if (rc) {
 932                 QETH_CARD_TEXT(card, 2, "FAILED");
 933                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 934                 dev_warn(&card->gdev->dev,
 935                         "Registering IP address %s failed\n", buf);
 936         }
 937         return rc;
 938 }
 939
 940 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 941                                                 struct qeth_ipaddr *addr)
 942 {
 943         int rc = 0;
 944
 945         if (addr->proto == QETH_PROT_IPV4) {
 946                 QETH_CARD_TEXT(card, 2, "deladdr4");
 947                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 948         } else if (addr->proto == QETH_PROT_IPV6) {
 949                 QETH_CARD_TEXT(card, 2, "deladdr6");
 950                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 951                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 952         } else {
 953                 QETH_CARD_TEXT(card, 2, "deladdr?");
 954                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 955         }
 956         if (addr->is_multicast)
 957                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 958         else
 959                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 960                                         addr->del_flags);
 961         if (rc)
 962                 QETH_CARD_TEXT(card, 2, "failed");
 963
 964         return rc;
 965 }
 966
 967 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 968 {
 969         if (cast_type == RTN_MULTICAST)
 970                 return QETH_CAST_MULTICAST;
 971         if (cast_type == RTN_BROADCAST)
 972                 return QETH_CAST_BROADCAST;
 973         return QETH_CAST_UNICAST;
 974 }
 975
 976 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 977 {
 978         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 979         if (cast_type == RTN_MULTICAST)
 980                 return ct | QETH_CAST_MULTICAST;
 981         if (cast_type == RTN_ANYCAST)
 982                 return ct | QETH_CAST_ANYCAST;
 983         if (cast_type == RTN_BROADCAST)
 984                 return ct | QETH_CAST_BROADCAST;
 985         return ct | QETH_CAST_UNICAST;
 986 }
 987
 988 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 989 {
 990         int rc;
 991
 992         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 993
 994         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 995                 dev_info(&card->gdev->dev,
 996                         "set adapter parameters not supported.\n");
 997                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 998                 return 0;
 999         }
1000         rc = qeth_query_setadapterparms(card);
1001         if (rc) {
1002                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1003                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1004                 return rc;
1005         }
1006         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1007                 rc = qeth_setadpparms_change_macaddr(card);
1008                 if (rc)
1009                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1010                                 " address failed\n");
1011         }
1012
1013         return rc;
1014 }
1015
1016 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1017                         struct qeth_reply *reply, unsigned long data)
1018 {
1019         struct qeth_ipa_cmd *cmd;
1020
1021         QETH_CARD_TEXT(card, 4, "defadpcb");
1022
1023         cmd = (struct qeth_ipa_cmd *) data;
1024         if (cmd->hdr.return_code == 0) {
1025                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1026                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1027                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1028                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1029                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1030         }
1031         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1032             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1033                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1034                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1035         }
1036         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1037             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1038                 card->info.tx_csum_mask =
1039                         cmd->data.setassparms.data.flags_32bit;
1040                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1041         }
1042
1043         return 0;
1044 }
1045
1046 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1047         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1048         __u16 len, enum qeth_prot_versions prot)
1049 {
1050         struct qeth_cmd_buffer *iob;
1051         struct qeth_ipa_cmd *cmd;
1052
1053         QETH_CARD_TEXT(card, 4, "getasscm");
1054         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1055
1056         if (iob) {
1057                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1058                 cmd->data.setassparms.hdr.assist_no = ipa_func;
1059                 cmd->data.setassparms.hdr.length = 8 + len;
1060                 cmd->data.setassparms.hdr.command_code = cmd_code;
1061                 cmd->data.setassparms.hdr.return_code = 0;
1062                 cmd->data.setassparms.hdr.seq_no = 0;
1063         }
1064
1065         return iob;
1066 }
1067
1068 #ifdef CONFIG_QETH_IPV6
1069 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1070                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1071 {
1072         int rc;
1073         struct qeth_cmd_buffer *iob;
1074
1075         QETH_CARD_TEXT(card, 4, "simassp6");
1076         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1077                                        0, QETH_PROT_IPV6);
1078         if (!iob)
1079                 return -ENOMEM;
1080         rc = qeth_send_setassparms(card, iob, 0, 0,
1081                                    qeth_l3_default_setassparms_cb, NULL);
1082         return rc;
1083 }
1084 #endif
1085
1086 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1087 {
1088         int rc;
1089
1090         QETH_CARD_TEXT(card, 3, "ipaarp");
1091
1092         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1093                 dev_info(&card->gdev->dev,
1094                         "ARP processing not supported on %s!\n",
1095                         QETH_CARD_IFNAME(card));
1096                 return 0;
1097         }
1098         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1099                                           IPA_CMD_ASS_START, 0);
1100         if (rc) {
1101                 dev_warn(&card->gdev->dev,
1102                         "Starting ARP processing support for %s failed\n",
1103                         QETH_CARD_IFNAME(card));
1104         }
1105         return rc;
1106 }
1107
1108 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1109 {
1110         int rc;
1111
1112         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1113
1114         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1115                 dev_info(&card->gdev->dev,
1116                         "Hardware IP fragmentation not supported on %s\n",
1117                         QETH_CARD_IFNAME(card));
1118                 return  -EOPNOTSUPP;
1119         }
1120
1121         rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1122                                           IPA_CMD_ASS_START, 0);
1123         if (rc) {
1124                 dev_warn(&card->gdev->dev,
1125                         "Starting IP fragmentation support for %s failed\n",
1126                         QETH_CARD_IFNAME(card));
1127         } else
1128                 dev_info(&card->gdev->dev,
1129                         "Hardware IP fragmentation enabled \n");
1130         return rc;
1131 }
1132
1133 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1134 {
1135         int rc;
1136
1137         QETH_CARD_TEXT(card, 3, "stsrcmac");
1138
1139         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1140                 dev_info(&card->gdev->dev,
1141                         "Inbound source MAC-address not supported on %s\n",
1142                         QETH_CARD_IFNAME(card));
1143                 return -EOPNOTSUPP;
1144         }
1145
1146         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
1147                                           IPA_CMD_ASS_START, 0);
1148         if (rc)
1149                 dev_warn(&card->gdev->dev,
1150                         "Starting source MAC-address support for %s failed\n",
1151                         QETH_CARD_IFNAME(card));
1152         return rc;
1153 }
1154
1155 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1156 {
1157         int rc = 0;
1158
1159         QETH_CARD_TEXT(card, 3, "strtvlan");
1160
1161         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1162                 dev_info(&card->gdev->dev,
1163                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1164                 return -EOPNOTSUPP;
1165         }
1166
1167         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
1168                                           IPA_CMD_ASS_START, 0);
1169         if (rc) {
1170                 dev_warn(&card->gdev->dev,
1171                         "Starting VLAN support for %s failed\n",
1172                         QETH_CARD_IFNAME(card));
1173         } else {
1174                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1175         }
1176         return rc;
1177 }
1178
1179 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1180 {
1181         int rc;
1182
1183         QETH_CARD_TEXT(card, 3, "stmcast");
1184
1185         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1186                 dev_info(&card->gdev->dev,
1187                         "Multicast not supported on %s\n",
1188                         QETH_CARD_IFNAME(card));
1189                 return -EOPNOTSUPP;
1190         }
1191
1192         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1193                                           IPA_CMD_ASS_START, 0);
1194         if (rc) {
1195                 dev_warn(&card->gdev->dev,
1196                         "Starting multicast support for %s failed\n",
1197                         QETH_CARD_IFNAME(card));
1198         } else {
1199                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1200                 card->dev->flags |= IFF_MULTICAST;
1201         }
1202         return rc;
1203 }
1204
1205 #ifdef CONFIG_QETH_IPV6
1206 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1207 {
1208         int rc;
1209
1210         QETH_CARD_TEXT(card, 3, "softipv6");
1211
1212         if (card->info.type == QETH_CARD_TYPE_IQD)
1213                 goto out;
1214
1215         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1216         if (rc) {
1217                 dev_err(&card->gdev->dev,
1218                         "Activating IPv6 support for %s failed\n",
1219                         QETH_CARD_IFNAME(card));
1220                 return rc;
1221         }
1222         rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1223                                           IPA_CMD_ASS_START, 3);
1224         if (rc) {
1225                 dev_err(&card->gdev->dev,
1226                         "Activating IPv6 support for %s failed\n",
1227                         QETH_CARD_IFNAME(card));
1228                 return rc;
1229         }
1230         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1231                                                IPA_CMD_ASS_START);
1232         if (rc) {
1233                 dev_err(&card->gdev->dev,
1234                         "Activating IPv6 support for %s failed\n",
1235                          QETH_CARD_IFNAME(card));
1236                 return rc;
1237         }
1238         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1239                                                IPA_CMD_ASS_START);
1240         if (rc) {
1241                 dev_warn(&card->gdev->dev,
1242                         "Enabling the passthrough mode for %s failed\n",
1243                         QETH_CARD_IFNAME(card));
1244                 return rc;
1245         }
1246 out:
1247         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1248         return 0;
1249 }
1250 #endif
1251
1252 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1253 {
1254         int rc = 0;
1255
1256         QETH_CARD_TEXT(card, 3, "strtipv6");
1257
1258         if (!qeth_is_supported(card, IPA_IPV6)) {
1259                 dev_info(&card->gdev->dev,
1260                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1261                 return 0;
1262         }
1263 #ifdef CONFIG_QETH_IPV6
1264         rc = qeth_l3_softsetup_ipv6(card);
1265 #endif
1266         return rc ;
1267 }
1268
1269 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1270 {
1271         int rc;
1272
1273         QETH_CARD_TEXT(card, 3, "stbrdcst");
1274         card->info.broadcast_capable = 0;
1275         if (!qeth_is_supported(card, IPA_FILTERING)) {
1276                 dev_info(&card->gdev->dev,
1277                         "Broadcast not supported on %s\n",
1278                         QETH_CARD_IFNAME(card));
1279                 rc = -EOPNOTSUPP;
1280                 goto out;
1281         }
1282         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1283                                           IPA_CMD_ASS_START, 0);
1284         if (rc) {
1285                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1286                         "%s failed\n", QETH_CARD_IFNAME(card));
1287                 goto out;
1288         }
1289
1290         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1291                                           IPA_CMD_ASS_CONFIGURE, 1);
1292         if (rc) {
1293                 dev_warn(&card->gdev->dev,
1294                         "Setting up broadcast filtering for %s failed\n",
1295                         QETH_CARD_IFNAME(card));
1296                 goto out;
1297         }
1298         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1299         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1300         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1301                                           IPA_CMD_ASS_ENABLE, 1);
1302         if (rc) {
1303                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1304                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1305                 goto out;
1306         }
1307         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1308 out:
1309         if (card->info.broadcast_capable)
1310                 card->dev->flags |= IFF_BROADCAST;
1311         else
1312                 card->dev->flags &= ~IFF_BROADCAST;
1313         return rc;
1314 }
1315
1316 static void qeth_l3_start_ipa_checksum(struct qeth_card *card)
1317 {
1318         QETH_CARD_TEXT(card, 3, "strtcsum");
1319         if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)
1320             && (card->dev->features & NETIF_F_RXCSUM))
1321                 qeth_set_rx_csum(card, 1);
1322 }
1323
1324 static void qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1325 {
1326         QETH_CARD_TEXT(card, 3, "strttxcs");
1327         qeth_start_ipa_tx_checksum(card);
1328 }
1329
1330 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1331 {
1332         int rc;
1333
1334         QETH_CARD_TEXT(card, 3, "sttso");
1335
1336         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1337                 dev_info(&card->gdev->dev,
1338                         "Outbound TSO not supported on %s\n",
1339                         QETH_CARD_IFNAME(card));
1340                 rc = -EOPNOTSUPP;
1341         } else {
1342                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1343                                                   IPA_CMD_ASS_START, 0);
1344                 if (rc)
1345                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1346                                 "segmentation offload for %s failed\n",
1347                                 QETH_CARD_IFNAME(card));
1348                 else
1349                         dev_info(&card->gdev->dev,
1350                                 "Outbound TSO enabled\n");
1351         }
1352         if (rc)
1353                 card->dev->features &= ~NETIF_F_TSO;
1354         return rc;
1355 }
1356
1357 static int qeth_l3_start_ipassists(struct qeth_card *card)
1358 {
1359         QETH_CARD_TEXT(card, 3, "strtipas");
1360
1361         if (qeth_set_access_ctrl_online(card, 0))
1362                 return -EIO;
1363         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1364         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1365         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1366         qeth_l3_start_ipa_vlan(card);           /* go on*/
1367         qeth_l3_start_ipa_multicast(card);              /* go on*/
1368         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1369         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1370         qeth_l3_start_ipa_checksum(card);               /* go on*/
1371         qeth_l3_start_ipa_tx_checksum(card);
1372         qeth_l3_start_ipa_tso(card);            /* go on*/
1373         return 0;
1374 }
1375
1376 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1377                 struct qeth_reply *reply, unsigned long data)
1378 {
1379         struct qeth_ipa_cmd *cmd;
1380
1381         cmd = (struct qeth_ipa_cmd *) data;
1382         if (cmd->hdr.return_code == 0)
1383                 memcpy(card->dev->dev_addr,
1384                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1385         else
1386                 eth_random_addr(card->dev->dev_addr);
1387
1388         return 0;
1389 }
1390
1391 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1392 {
1393         int rc = 0;
1394         struct qeth_cmd_buffer *iob;
1395         struct qeth_ipa_cmd *cmd;
1396
1397         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1398
1399         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1400                                      QETH_PROT_IPV6);
1401         if (!iob)
1402                 return -ENOMEM;
1403         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1404         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1405                         card->info.unique_id;
1406
1407         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1408                                 NULL);
1409         return rc;
1410 }
1411
1412 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1413                 struct qeth_reply *reply, unsigned long data)
1414 {
1415         struct qeth_ipa_cmd *cmd;
1416
1417         cmd = (struct qeth_ipa_cmd *) data;
1418         if (cmd->hdr.return_code == 0)
1419                 card->info.unique_id = *((__u16 *)
1420                                 &cmd->data.create_destroy_addr.unique_id[6]);
1421         else {
1422                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1423                                         UNIQUE_ID_NOT_BY_CARD;
1424                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1425                         "generate a unique ID\n");
1426         }
1427         return 0;
1428 }
1429
1430 static int qeth_l3_get_unique_id(struct qeth_card *card)
1431 {
1432         int rc = 0;
1433         struct qeth_cmd_buffer *iob;
1434         struct qeth_ipa_cmd *cmd;
1435
1436         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1437
1438         if (!qeth_is_supported(card, IPA_IPV6)) {
1439                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1440                                         UNIQUE_ID_NOT_BY_CARD;
1441                 return 0;
1442         }
1443
1444         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1445                                      QETH_PROT_IPV6);
1446         if (!iob)
1447                 return -ENOMEM;
1448         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1449         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1450                         card->info.unique_id;
1451
1452         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1453         return rc;
1454 }
1455
1456 static int
1457 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1458                             unsigned long data)
1459 {
1460         struct qeth_ipa_cmd        *cmd;
1461         __u16 rc;
1462
1463         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1464
1465         cmd = (struct qeth_ipa_cmd *)data;
1466         rc = cmd->hdr.return_code;
1467         if (rc)
1468                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1469         switch (cmd->data.diagass.action) {
1470         case QETH_DIAGS_CMD_TRACE_QUERY:
1471                 break;
1472         case QETH_DIAGS_CMD_TRACE_DISABLE:
1473                 switch (rc) {
1474                 case 0:
1475                 case IPA_RC_INVALID_SUBCMD:
1476                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1477                         dev_info(&card->gdev->dev, "The HiperSockets network "
1478                                 "traffic analyzer is deactivated\n");
1479                         break;
1480                 default:
1481                         break;
1482                 }
1483                 break;
1484         case QETH_DIAGS_CMD_TRACE_ENABLE:
1485                 switch (rc) {
1486                 case 0:
1487                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1488                         dev_info(&card->gdev->dev, "The HiperSockets network "
1489                                 "traffic analyzer is activated\n");
1490                         break;
1491                 case IPA_RC_HARDWARE_AUTH_ERROR:
1492                         dev_warn(&card->gdev->dev, "The device is not "
1493                                 "authorized to run as a HiperSockets network "
1494                                 "traffic analyzer\n");
1495                         break;
1496                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1497                         dev_warn(&card->gdev->dev, "A HiperSockets "
1498                                 "network traffic analyzer is already "
1499                                 "active in the HiperSockets LAN\n");
1500                         break;
1501                 default:
1502                         break;
1503                 }
1504                 break;
1505         default:
1506                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1507                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1508         }
1509
1510         return 0;
1511 }
1512
1513 static int
1514 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1515 {
1516         struct qeth_cmd_buffer *iob;
1517         struct qeth_ipa_cmd    *cmd;
1518
1519         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1520
1521         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1522         if (!iob)
1523                 return -ENOMEM;
1524         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1525         cmd->data.diagass.subcmd_len = 16;
1526         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1527         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1528         cmd->data.diagass.action = diags_cmd;
1529         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1530 }
1531
1532 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1533                                 struct net_device *dev)
1534 {
1535         ip_eth_mc_map(ipm, mac);
1536 }
1537
1538 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1539 {
1540         struct qeth_ipaddr *ipm;
1541         struct ip_mc_list *im4;
1542         char buf[MAX_ADDR_LEN];
1543
1544         QETH_CARD_TEXT(card, 4, "addmc");
1545         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1546              im4 = rcu_dereference(im4->next_rcu)) {
1547                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1548                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1549                 if (!ipm)
1550                         continue;
1551                 ipm->u.a4.addr = im4->multiaddr;
1552                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1553                 ipm->is_multicast = 1;
1554                 if (!qeth_l3_add_ip(card, ipm))
1555                         kfree(ipm);
1556         }
1557 }
1558
1559 /* called with rcu_read_lock */
1560 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1561 {
1562         struct in_device *in_dev;
1563         u16 vid;
1564
1565         QETH_CARD_TEXT(card, 4, "addmcvl");
1566         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1567                 return;
1568
1569         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1570                 struct net_device *netdev;
1571
1572                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1573                                               vid);
1574                 if (netdev == NULL ||
1575                     !(netdev->flags & IFF_UP))
1576                         continue;
1577                 in_dev = __in_dev_get_rcu(netdev);
1578                 if (!in_dev)
1579                         continue;
1580                 qeth_l3_add_mc(card, in_dev);
1581         }
1582 }
1583
1584 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1585 {
1586         struct in_device *in4_dev;
1587
1588         QETH_CARD_TEXT(card, 4, "chkmcv4");
1589         rcu_read_lock();
1590         in4_dev = __in_dev_get_rcu(card->dev);
1591         if (in4_dev == NULL)
1592                 goto unlock;
1593         qeth_l3_add_mc(card, in4_dev);
1594         qeth_l3_add_vlan_mc(card);
1595 unlock:
1596         rcu_read_unlock();
1597 }
1598
1599 #ifdef CONFIG_QETH_IPV6
1600 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1601 {
1602         struct qeth_ipaddr *ipm;
1603         struct ifmcaddr6 *im6;
1604         char buf[MAX_ADDR_LEN];
1605
1606         QETH_CARD_TEXT(card, 4, "addmc6");
1607         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1608                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1609                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1610                 if (!ipm)
1611                         continue;
1612                 ipm->is_multicast = 1;
1613                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1614                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1615                        sizeof(struct in6_addr));
1616                 if (!qeth_l3_add_ip(card, ipm))
1617                         kfree(ipm);
1618         }
1619 }
1620
1621 /* called with rcu_read_lock */
1622 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1623 {
1624         struct inet6_dev *in_dev;
1625         u16 vid;
1626
1627         QETH_CARD_TEXT(card, 4, "admc6vl");
1628         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1629                 return;
1630
1631         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1632                 struct net_device *netdev;
1633
1634                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1635                                               vid);
1636                 if (netdev == NULL ||
1637                     !(netdev->flags & IFF_UP))
1638                         continue;
1639                 in_dev = in6_dev_get(netdev);
1640                 if (!in_dev)
1641                         continue;
1642                 read_lock_bh(&in_dev->lock);
1643                 qeth_l3_add_mc6(card, in_dev);
1644                 read_unlock_bh(&in_dev->lock);
1645                 in6_dev_put(in_dev);
1646         }
1647 }
1648
1649 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1650 {
1651         struct inet6_dev *in6_dev;
1652
1653         QETH_CARD_TEXT(card, 4, "chkmcv6");
1654         if (!qeth_is_supported(card, IPA_IPV6))
1655                 return ;
1656         in6_dev = in6_dev_get(card->dev);
1657         if (in6_dev == NULL)
1658                 return;
1659         rcu_read_lock();
1660         read_lock_bh(&in6_dev->lock);
1661         qeth_l3_add_mc6(card, in6_dev);
1662         qeth_l3_add_vlan_mc6(card);
1663         read_unlock_bh(&in6_dev->lock);
1664         rcu_read_unlock();
1665         in6_dev_put(in6_dev);
1666 }
1667 #endif /* CONFIG_QETH_IPV6 */
1668
1669 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1670                         unsigned short vid)
1671 {
1672         struct in_device *in_dev;
1673         struct in_ifaddr *ifa;
1674         struct qeth_ipaddr *addr;
1675         struct net_device *netdev;
1676
1677         QETH_CARD_TEXT(card, 4, "frvaddr4");
1678
1679         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1680         if (!netdev)
1681                 return;
1682         in_dev = in_dev_get(netdev);
1683         if (!in_dev)
1684                 return;
1685         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1686                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1687                 if (addr) {
1688                         addr->u.a4.addr = ifa->ifa_address;
1689                         addr->u.a4.mask = ifa->ifa_mask;
1690                         addr->type = QETH_IP_TYPE_NORMAL;
1691                         if (!qeth_l3_delete_ip(card, addr))
1692                                 kfree(addr);
1693                 }
1694         }
1695         in_dev_put(in_dev);
1696 }
1697
1698 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1699                         unsigned short vid)
1700 {
1701 #ifdef CONFIG_QETH_IPV6
1702         struct inet6_dev *in6_dev;
1703         struct inet6_ifaddr *ifa;
1704         struct qeth_ipaddr *addr;
1705         struct net_device *netdev;
1706
1707         QETH_CARD_TEXT(card, 4, "frvaddr6");
1708
1709         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1710         if (!netdev)
1711                 return;
1712         in6_dev = in6_dev_get(netdev);
1713         if (!in6_dev)
1714                 return;
1715         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1716                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1717                 if (addr) {
1718                         memcpy(&addr->u.a6.addr, &ifa->addr,
1719                                sizeof(struct in6_addr));
1720                         addr->u.a6.pfxlen = ifa->prefix_len;
1721                         addr->type = QETH_IP_TYPE_NORMAL;
1722                         if (!qeth_l3_delete_ip(card, addr))
1723                                 kfree(addr);
1724                 }
1725         }
1726         in6_dev_put(in6_dev);
1727 #endif /* CONFIG_QETH_IPV6 */
1728 }
1729
1730 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1731                         unsigned short vid)
1732 {
1733         rcu_read_lock();
1734         qeth_l3_free_vlan_addresses4(card, vid);
1735         qeth_l3_free_vlan_addresses6(card, vid);
1736         rcu_read_unlock();
1737 }
1738
1739 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1740                                    __be16 proto, u16 vid)
1741 {
1742         struct qeth_card *card = dev->ml_priv;
1743
1744         set_bit(vid, card->active_vlans);
1745         return 0;
1746 }
1747
1748 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1749                                     __be16 proto, u16 vid)
1750 {
1751         struct qeth_card *card = dev->ml_priv;
1752         unsigned long flags;
1753
1754         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1755         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1756                 QETH_CARD_TEXT(card, 3, "kidREC");
1757                 return 0;
1758         }
1759         spin_lock_irqsave(&card->vlanlock, flags);
1760         /* unregister IP addresses of vlan device */
1761         qeth_l3_free_vlan_addresses(card, vid);
1762         clear_bit(vid, card->active_vlans);
1763         spin_unlock_irqrestore(&card->vlanlock, flags);
1764         qeth_l3_set_multicast_list(card->dev);
1765         return 0;
1766 }
1767
1768 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1769                         struct sk_buff *skb, struct qeth_hdr *hdr,
1770                         unsigned short *vlan_id)
1771 {
1772         __be16 prot;
1773         struct iphdr *ip_hdr;
1774         unsigned char tg_addr[MAX_ADDR_LEN];
1775         int is_vlan = 0;
1776
1777         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1778                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1779                               ETH_P_IP);
1780                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1781                 case QETH_CAST_MULTICAST:
1782                         switch (prot) {
1783 #ifdef CONFIG_QETH_IPV6
1784                         case __constant_htons(ETH_P_IPV6):
1785                                 ndisc_mc_map((struct in6_addr *)
1786                                      skb->data + 24,
1787                                      tg_addr, card->dev, 0);
1788                                 break;
1789 #endif
1790                         case __constant_htons(ETH_P_IP):
1791                                 ip_hdr = (struct iphdr *)skb->data;
1792                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1793                                 break;
1794                         default:
1795                                 memcpy(tg_addr, card->dev->broadcast,
1796                                         card->dev->addr_len);
1797                         }
1798                         card->stats.multicast++;
1799                         skb->pkt_type = PACKET_MULTICAST;
1800                         break;
1801                 case QETH_CAST_BROADCAST:
1802                         memcpy(tg_addr, card->dev->broadcast,
1803                                 card->dev->addr_len);
1804                         card->stats.multicast++;
1805                         skb->pkt_type = PACKET_BROADCAST;
1806                         break;
1807                 case QETH_CAST_UNICAST:
1808                 case QETH_CAST_ANYCAST:
1809                 case QETH_CAST_NOCAST:
1810                 default:
1811                         if (card->options.sniffer)
1812                                 skb->pkt_type = PACKET_OTHERHOST;
1813                         else
1814                                 skb->pkt_type = PACKET_HOST;
1815                         memcpy(tg_addr, card->dev->dev_addr,
1816                                 card->dev->addr_len);
1817                 }
1818                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1819                         card->dev->header_ops->create(skb, card->dev, prot,
1820                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1821                                 card->dev->addr_len);
1822                 else
1823                         card->dev->header_ops->create(skb, card->dev, prot,
1824                                 tg_addr, "FAKELL", card->dev->addr_len);
1825         }
1826
1827         skb->protocol = eth_type_trans(skb, card->dev);
1828
1829         if (hdr->hdr.l3.ext_flags &
1830             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1831                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1832                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1833                 is_vlan = 1;
1834         }
1835
1836         if (card->dev->features & NETIF_F_RXCSUM) {
1837                 if ((hdr->hdr.l3.ext_flags &
1838                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1839                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1840                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1841                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1842                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1843                 else
1844                         skb->ip_summed = CHECKSUM_NONE;
1845         } else
1846                 skb->ip_summed = CHECKSUM_NONE;
1847         return is_vlan;
1848 }
1849
1850 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1851                                 int budget, int *done)
1852 {
1853         int work_done = 0;
1854         struct sk_buff *skb;
1855         struct qeth_hdr *hdr;
1856         __u16 vlan_tag = 0;
1857         int is_vlan;
1858         unsigned int len;
1859         __u16 magic;
1860
1861         *done = 0;
1862         WARN_ON_ONCE(!budget);
1863         while (budget) {
1864                 skb = qeth_core_get_next_skb(card,
1865                         &card->qdio.in_q->bufs[card->rx.b_index],
1866                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1867                 if (!skb) {
1868                         *done = 1;
1869                         break;
1870                 }
1871                 skb->dev = card->dev;
1872                 switch (hdr->hdr.l3.id) {
1873                 case QETH_HEADER_TYPE_LAYER3:
1874                         magic = *(__u16 *)skb->data;
1875                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1876                             (magic == ETH_P_AF_IUCV)) {
1877                                 skb->protocol = ETH_P_AF_IUCV;
1878                                 skb->pkt_type = PACKET_HOST;
1879                                 skb->mac_header = NET_SKB_PAD;
1880                                 skb->dev = card->dev;
1881                                 len = skb->len;
1882                                 card->dev->header_ops->create(skb, card->dev, 0,
1883                                         card->dev->dev_addr, "FAKELL",
1884                                         card->dev->addr_len);
1885                                 netif_receive_skb(skb);
1886                         } else {
1887                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1888                                                       &vlan_tag);
1889                                 len = skb->len;
1890                                 if (is_vlan && !card->options.sniffer)
1891                                         __vlan_hwaccel_put_tag(skb,
1892                                                 htons(ETH_P_8021Q), vlan_tag);
1893                                 napi_gro_receive(&card->napi, skb);
1894                         }
1895                         break;
1896                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1897                         skb->pkt_type = PACKET_HOST;
1898                         skb->protocol = eth_type_trans(skb, skb->dev);
1899                         len = skb->len;
1900                         netif_receive_skb(skb);
1901                         break;
1902                 default:
1903                         dev_kfree_skb_any(skb);
1904                         QETH_CARD_TEXT(card, 3, "inbunkno");
1905                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1906                         continue;
1907                 }
1908                 work_done++;
1909                 budget--;
1910                 card->stats.rx_packets++;
1911                 card->stats.rx_bytes += len;
1912         }
1913         return work_done;
1914 }
1915
1916 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1917 {
1918         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1919         int work_done = 0;
1920         struct qeth_qdio_buffer *buffer;
1921         int done;
1922         int new_budget = budget;
1923
1924         if (card->options.performance_stats) {
1925                 card->perf_stats.inbound_cnt++;
1926                 card->perf_stats.inbound_start_time = qeth_get_micros();
1927         }
1928
1929         while (1) {
1930                 if (!card->rx.b_count) {
1931                         card->rx.qdio_err = 0;
1932                         card->rx.b_count = qdio_get_next_buffers(
1933                                 card->data.ccwdev, 0, &card->rx.b_index,
1934                                 &card->rx.qdio_err);
1935                         if (card->rx.b_count <= 0) {
1936                                 card->rx.b_count = 0;
1937                                 break;
1938                         }
1939                         card->rx.b_element =
1940                                 &card->qdio.in_q->bufs[card->rx.b_index]
1941                                 .buffer->element[0];
1942                         card->rx.e_offset = 0;
1943                 }
1944
1945                 while (card->rx.b_count) {
1946                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
1947                         if (!(card->rx.qdio_err &&
1948                             qeth_check_qdio_errors(card, buffer->buffer,
1949                             card->rx.qdio_err, "qinerr")))
1950                                 work_done += qeth_l3_process_inbound_buffer(
1951                                         card, new_budget, &done);
1952                         else
1953                                 done = 1;
1954
1955                         if (done) {
1956                                 if (card->options.performance_stats)
1957                                         card->perf_stats.bufs_rec++;
1958                                 qeth_put_buffer_pool_entry(card,
1959                                         buffer->pool_entry);
1960                                 qeth_queue_input_buffer(card, card->rx.b_index);
1961                                 card->rx.b_count--;
1962                                 if (card->rx.b_count) {
1963                                         card->rx.b_index =
1964                                                 (card->rx.b_index + 1) %
1965                                                 QDIO_MAX_BUFFERS_PER_Q;
1966                                         card->rx.b_element =
1967                                                 &card->qdio.in_q
1968                                                 ->bufs[card->rx.b_index]
1969                                                 .buffer->element[0];
1970                                         card->rx.e_offset = 0;
1971                                 }
1972                         }
1973
1974                         if (work_done >= budget)
1975                                 goto out;
1976                         else
1977                                 new_budget = budget - work_done;
1978                 }
1979         }
1980
1981         napi_complete(napi);
1982         if (qdio_start_irq(card->data.ccwdev, 0))
1983                 napi_schedule(&card->napi);
1984 out:
1985         if (card->options.performance_stats)
1986                 card->perf_stats.inbound_time += qeth_get_micros() -
1987                         card->perf_stats.inbound_start_time;
1988         return work_done;
1989 }
1990
1991 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1992                         struct qeth_card *card)
1993 {
1994         int rc = 0;
1995         u16 vid;
1996
1997         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1998                 struct net_device *netdev;
1999
2000                 rcu_read_lock();
2001                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
2002                                               vid);
2003                 rcu_read_unlock();
2004                 if (netdev == dev) {
2005                         rc = QETH_VLAN_CARD;
2006                         break;
2007                 }
2008         }
2009
2010         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2011                 return 0;
2012
2013         return rc;
2014 }
2015
2016 static int qeth_l3_verify_dev(struct net_device *dev)
2017 {
2018         struct qeth_card *card;
2019         unsigned long flags;
2020         int rc = 0;
2021
2022         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2023         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2024                 if (card->dev == dev) {
2025                         rc = QETH_REAL_CARD;
2026                         break;
2027                 }
2028                 rc = qeth_l3_verify_vlan_dev(dev, card);
2029                 if (rc)
2030                         break;
2031         }
2032         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2033
2034         return rc;
2035 }
2036
2037 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2038 {
2039         struct qeth_card *card = NULL;
2040         int rc;
2041
2042         rc = qeth_l3_verify_dev(dev);
2043         if (rc == QETH_REAL_CARD)
2044                 card = dev->ml_priv;
2045         else if (rc == QETH_VLAN_CARD)
2046                 card = vlan_dev_real_dev(dev)->ml_priv;
2047         if (card && card->options.layer2)
2048                 card = NULL;
2049         if (card)
2050                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2051         return card ;
2052 }
2053
2054 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2055 {
2056         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2057         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2058
2059         qeth_set_allowed_threads(card, 0, 1);
2060         if (card->options.sniffer &&
2061             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2062                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2063         if (card->read.state == CH_STATE_UP &&
2064             card->write.state == CH_STATE_UP &&
2065             (card->state == CARD_STATE_UP)) {
2066                 if (recovery_mode)
2067                         qeth_l3_stop(card->dev);
2068                 else {
2069                         rtnl_lock();
2070                         dev_close(card->dev);
2071                         rtnl_unlock();
2072                 }
2073                 card->state = CARD_STATE_SOFTSETUP;
2074         }
2075         if (card->state == CARD_STATE_SOFTSETUP) {
2076                 qeth_l3_clear_ip_list(card, 1);
2077                 qeth_clear_ipacmd_list(card);
2078                 card->state = CARD_STATE_HARDSETUP;
2079         }
2080         if (card->state == CARD_STATE_HARDSETUP) {
2081                 qeth_qdio_clear_card(card, 0);
2082                 qeth_clear_qdio_buffers(card);
2083                 qeth_clear_working_pool_list(card);
2084                 card->state = CARD_STATE_DOWN;
2085         }
2086         if (card->state == CARD_STATE_DOWN) {
2087                 qeth_clear_cmd_buffers(&card->read);
2088                 qeth_clear_cmd_buffers(&card->write);
2089         }
2090 }
2091
2092 /*
2093  * test for and Switch promiscuous mode (on or off)
2094  *  either for guestlan or HiperSocket Sniffer
2095  */
2096 static void
2097 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2098 {
2099         struct net_device *dev = card->dev;
2100
2101         if (((dev->flags & IFF_PROMISC) &&
2102              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2103             (!(dev->flags & IFF_PROMISC) &&
2104              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2105                 return;
2106
2107         if (card->info.guestlan) {              /* Guestlan trace */
2108                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2109                         qeth_setadp_promisc_mode(card);
2110         } else if (card->options.sniffer &&     /* HiperSockets trace */
2111                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2112                 if (dev->flags & IFF_PROMISC) {
2113                         QETH_CARD_TEXT(card, 3, "+promisc");
2114                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2115                 } else {
2116                         QETH_CARD_TEXT(card, 3, "-promisc");
2117                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2118                 }
2119         }
2120 }
2121
2122 static void qeth_l3_set_multicast_list(struct net_device *dev)
2123 {
2124         struct qeth_card *card = dev->ml_priv;
2125
2126         QETH_CARD_TEXT(card, 3, "setmulti");
2127         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2128             (card->state != CARD_STATE_UP))
2129                 return;
2130         if (!card->options.sniffer) {
2131                 qeth_l3_delete_mc_addresses(card);
2132                 qeth_l3_add_multicast_ipv4(card);
2133 #ifdef CONFIG_QETH_IPV6
2134                 qeth_l3_add_multicast_ipv6(card);
2135 #endif
2136                 qeth_l3_set_ip_addr_list(card);
2137                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2138                         return;
2139         }
2140         qeth_l3_handle_promisc_mode(card);
2141 }
2142
2143 static const char *qeth_l3_arp_get_error_cause(int *rc)
2144 {
2145         switch (*rc) {
2146         case QETH_IPA_ARP_RC_FAILED:
2147                 *rc = -EIO;
2148                 return "operation failed";
2149         case QETH_IPA_ARP_RC_NOTSUPP:
2150                 *rc = -EOPNOTSUPP;
2151                 return "operation not supported";
2152         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2153                 *rc = -EINVAL;
2154                 return "argument out of range";
2155         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2156                 *rc = -EOPNOTSUPP;
2157                 return "query operation not supported";
2158         case QETH_IPA_ARP_RC_Q_NO_DATA:
2159                 *rc = -ENOENT;
2160                 return "no query data available";
2161         default:
2162                 return "unknown error";
2163         }
2164 }
2165
2166 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2167 {
2168         int tmp;
2169         int rc;
2170
2171         QETH_CARD_TEXT(card, 3, "arpstnoe");
2172
2173         /*
2174          * currently GuestLAN only supports the ARP assist function
2175          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2176          * thus we say EOPNOTSUPP for this ARP function
2177          */
2178         if (card->info.guestlan)
2179                 return -EOPNOTSUPP;
2180         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2181                 return -EOPNOTSUPP;
2182         }
2183         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2184                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2185                                           no_entries);
2186         if (rc) {
2187                 tmp = rc;
2188                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2189                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2190                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2191         }
2192         return rc;
2193 }
2194
2195 static __u32 get_arp_entry_size(struct qeth_card *card,
2196                         struct qeth_arp_query_data *qdata,
2197                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2198 {
2199         __u32 rc;
2200         __u8 is_hsi;
2201
2202         is_hsi = qdata->reply_bits == 5;
2203         if (type->ip == QETHARP_IP_ADDR_V4) {
2204                 QETH_CARD_TEXT(card, 4, "arpev4");
2205                 if (strip_entries) {
2206                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2207                                 sizeof(struct qeth_arp_qi_entry7_short);
2208                 } else {
2209                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2210                                 sizeof(struct qeth_arp_qi_entry7);
2211                 }
2212         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2213                 QETH_CARD_TEXT(card, 4, "arpev6");
2214                 if (strip_entries) {
2215                         rc = is_hsi ?
2216                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2217                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2218                 } else {
2219                         rc = is_hsi ?
2220                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2221                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2222                 }
2223         } else {
2224                 QETH_CARD_TEXT(card, 4, "arpinv");
2225                 rc = 0;
2226         }
2227
2228         return rc;
2229 }
2230
2231 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2232 {
2233         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2234                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2235 }
2236
2237 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2238                 struct qeth_reply *reply, unsigned long data)
2239 {
2240         struct qeth_ipa_cmd *cmd;
2241         struct qeth_arp_query_data *qdata;
2242         struct qeth_arp_query_info *qinfo;
2243         int i;
2244         int e;
2245         int entrybytes_done;
2246         int stripped_bytes;
2247         __u8 do_strip_entries;
2248
2249         QETH_CARD_TEXT(card, 3, "arpquecb");
2250
2251         qinfo = (struct qeth_arp_query_info *) reply->param;
2252         cmd = (struct qeth_ipa_cmd *) data;
2253         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2254         if (cmd->hdr.return_code) {
2255                 QETH_CARD_TEXT(card, 4, "arpcberr");
2256                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2257                 return 0;
2258         }
2259         if (cmd->data.setassparms.hdr.return_code) {
2260                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2261                 QETH_CARD_TEXT(card, 4, "setaperr");
2262                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2263                 return 0;
2264         }
2265         qdata = &cmd->data.setassparms.data.query_arp;
2266         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2267
2268         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2269         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2270         entrybytes_done = 0;
2271         for (e = 0; e < qdata->no_entries; ++e) {
2272                 char *cur_entry;
2273                 __u32 esize;
2274                 struct qeth_arp_entrytype *etype;
2275
2276                 cur_entry = &qdata->data + entrybytes_done;
2277                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2278                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2279                         QETH_CARD_TEXT(card, 4, "pmis");
2280                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2281                         break;
2282                 }
2283                 esize = get_arp_entry_size(card, qdata, etype,
2284                         do_strip_entries);
2285                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2286                 if (!esize)
2287                         break;
2288
2289                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2290                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2291                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2292                         goto out_error;
2293                 }
2294
2295                 memcpy(qinfo->udata + qinfo->udata_offset,
2296                         &qdata->data + entrybytes_done + stripped_bytes,
2297                         esize);
2298                 entrybytes_done += esize + stripped_bytes;
2299                 qinfo->udata_offset += esize;
2300                 ++qinfo->no_entries;
2301         }
2302         /* check if all replies received ... */
2303         if (cmd->data.setassparms.hdr.seq_no <
2304             cmd->data.setassparms.hdr.number_of_replies)
2305                 return 1;
2306         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2307         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2308         /* keep STRIP_ENTRIES flag so the user program can distinguish
2309          * stripped entries from normal ones */
2310         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2311                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2312         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2313         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2314         return 0;
2315 out_error:
2316         i = 0;
2317         memcpy(qinfo->udata, &i, 4);
2318         return 0;
2319 }
2320
2321 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2322                 struct qeth_cmd_buffer *iob, int len,
2323                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2324                         unsigned long),
2325                 void *reply_param)
2326 {
2327         QETH_CARD_TEXT(card, 4, "sendarp");
2328
2329         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2330         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2331                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2332         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2333                                       reply_cb, reply_param);
2334 }
2335
2336 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2337         enum qeth_prot_versions prot,
2338         struct qeth_arp_query_info *qinfo)
2339 {
2340         struct qeth_cmd_buffer *iob;
2341         struct qeth_ipa_cmd *cmd;
2342         int tmp;
2343         int rc;
2344
2345         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2346
2347         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2348                         IPA_CMD_ASS_ARP_QUERY_INFO,
2349                         sizeof(struct qeth_arp_query_data) - sizeof(char),
2350                         prot);
2351         if (!iob)
2352                 return -ENOMEM;
2353         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2354         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2355         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2356         cmd->data.setassparms.data.query_arp.no_entries = 0;
2357         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2358                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2359                            qeth_l3_arp_query_cb, (void *)qinfo);
2360         if (rc) {
2361                 tmp = rc;
2362                 QETH_DBF_MESSAGE(2,
2363                         "Error while querying ARP cache on %s: %s "
2364                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2365                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2366         }
2367
2368         return rc;
2369 }
2370
2371 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2372 {
2373         struct qeth_arp_query_info qinfo = {0, };
2374         int rc;
2375
2376         QETH_CARD_TEXT(card, 3, "arpquery");
2377
2378         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2379                                IPA_ARP_PROCESSING)) {
2380                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2381                 rc = -EOPNOTSUPP;
2382                 goto out;
2383         }
2384         /* get size of userspace buffer and mask_bits -> 6 bytes */
2385         if (copy_from_user(&qinfo, udata, 6)) {
2386                 rc = -EFAULT;
2387                 goto out;
2388         }
2389         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2390         if (!qinfo.udata) {
2391                 rc = -ENOMEM;
2392                 goto out;
2393         }
2394         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2395         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2396         if (rc) {
2397                 if (copy_to_user(udata, qinfo.udata, 4))
2398                         rc = -EFAULT;
2399                         goto free_and_out;
2400         } else {
2401 #ifdef CONFIG_QETH_IPV6
2402                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2403                         /* fails in case of GuestLAN QDIO mode */
2404                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2405                                 &qinfo);
2406                 }
2407 #endif
2408                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2409                         QETH_CARD_TEXT(card, 4, "qactf");
2410                         rc = -EFAULT;
2411                         goto free_and_out;
2412                 }
2413                 QETH_CARD_TEXT(card, 4, "qacts");
2414         }
2415 free_and_out:
2416         kfree(qinfo.udata);
2417 out:
2418         return rc;
2419 }
2420
2421 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2422                                 struct qeth_arp_cache_entry *entry)
2423 {
2424         struct qeth_cmd_buffer *iob;
2425         char buf[16];
2426         int tmp;
2427         int rc;
2428
2429         QETH_CARD_TEXT(card, 3, "arpadent");
2430
2431         /*
2432          * currently GuestLAN only supports the ARP assist function
2433          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2434          * thus we say EOPNOTSUPP for this ARP function
2435          */
2436         if (card->info.guestlan)
2437                 return -EOPNOTSUPP;
2438         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2439                 return -EOPNOTSUPP;
2440         }
2441
2442         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2443                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2444                                        sizeof(struct qeth_arp_cache_entry),
2445                                        QETH_PROT_IPV4);
2446         if (!iob)
2447                 return -ENOMEM;
2448         rc = qeth_send_setassparms(card, iob,
2449                                    sizeof(struct qeth_arp_cache_entry),
2450                                    (unsigned long) entry,
2451                                    qeth_l3_default_setassparms_cb, NULL);
2452         if (rc) {
2453                 tmp = rc;
2454                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2455                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2456                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2457                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2458         }
2459         return rc;
2460 }
2461
2462 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2463                                 struct qeth_arp_cache_entry *entry)
2464 {
2465         struct qeth_cmd_buffer *iob;
2466         char buf[16] = {0, };
2467         int tmp;
2468         int rc;
2469
2470         QETH_CARD_TEXT(card, 3, "arprment");
2471
2472         /*
2473          * currently GuestLAN only supports the ARP assist function
2474          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2475          * thus we say EOPNOTSUPP for this ARP function
2476          */
2477         if (card->info.guestlan)
2478                 return -EOPNOTSUPP;
2479         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2480                 return -EOPNOTSUPP;
2481         }
2482         memcpy(buf, entry, 12);
2483         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2484                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2485                                        12,
2486                                        QETH_PROT_IPV4);
2487         if (!iob)
2488                 return -ENOMEM;
2489         rc = qeth_send_setassparms(card, iob,
2490                                    12, (unsigned long)buf,
2491                                    qeth_l3_default_setassparms_cb, NULL);
2492         if (rc) {
2493                 tmp = rc;
2494                 memset(buf, 0, 16);
2495                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2496                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2497                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2498                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2499         }
2500         return rc;
2501 }
2502
2503 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2504 {
2505         int rc;
2506         int tmp;
2507
2508         QETH_CARD_TEXT(card, 3, "arpflush");
2509
2510         /*
2511          * currently GuestLAN only supports the ARP assist function
2512          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2513          * thus we say EOPNOTSUPP for this ARP function
2514         */
2515         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2516                 return -EOPNOTSUPP;
2517         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2518                 return -EOPNOTSUPP;
2519         }
2520         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2521                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2522         if (rc) {
2523                 tmp = rc;
2524                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2525                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2526                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2527         }
2528         return rc;
2529 }
2530
2531 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2532 {
2533         struct qeth_card *card = dev->ml_priv;
2534         struct qeth_arp_cache_entry arp_entry;
2535         struct mii_ioctl_data *mii_data;
2536         int rc = 0;
2537
2538         if (!card)
2539                 return -ENODEV;
2540
2541         if (!qeth_card_hw_is_reachable(card))
2542                 return -ENODEV;
2543
2544         switch (cmd) {
2545         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2546                 if (!capable(CAP_NET_ADMIN)) {
2547                         rc = -EPERM;
2548                         break;
2549                 }
2550                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2551                 break;
2552         case SIOC_QETH_ARP_QUERY_INFO:
2553                 if (!capable(CAP_NET_ADMIN)) {
2554                         rc = -EPERM;
2555                         break;
2556                 }
2557                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2558                 break;
2559         case SIOC_QETH_ARP_ADD_ENTRY:
2560                 if (!capable(CAP_NET_ADMIN)) {
2561                         rc = -EPERM;
2562                         break;
2563                 }
2564                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2565                                    sizeof(struct qeth_arp_cache_entry)))
2566                         rc = -EFAULT;
2567                 else
2568                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2569                 break;
2570         case SIOC_QETH_ARP_REMOVE_ENTRY:
2571                 if (!capable(CAP_NET_ADMIN)) {
2572                         rc = -EPERM;
2573                         break;
2574                 }
2575                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2576                                    sizeof(struct qeth_arp_cache_entry)))
2577                         rc = -EFAULT;
2578                 else
2579                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2580                 break;
2581         case SIOC_QETH_ARP_FLUSH_CACHE:
2582                 if (!capable(CAP_NET_ADMIN)) {
2583                         rc = -EPERM;
2584                         break;
2585                 }
2586                 rc = qeth_l3_arp_flush_cache(card);
2587                 break;
2588         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2589                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2590                 break;
2591         case SIOC_QETH_GET_CARD_TYPE:
2592                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2593                      card->info.type == QETH_CARD_TYPE_OSX) &&
2594                     !card->info.guestlan)
2595                         return 1;
2596                 return 0;
2597                 break;
2598         case SIOCGMIIPHY:
2599                 mii_data = if_mii(rq);
2600                 mii_data->phy_id = 0;
2601                 break;
2602         case SIOCGMIIREG:
2603                 mii_data = if_mii(rq);
2604                 if (mii_data->phy_id != 0)
2605                         rc = -EINVAL;
2606                 else
2607                         mii_data->val_out = qeth_mdio_read(dev,
2608                                                         mii_data->phy_id,
2609                                                         mii_data->reg_num);
2610                 break;
2611         case SIOC_QETH_QUERY_OAT:
2612                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2613                 break;
2614         default:
2615                 rc = -EOPNOTSUPP;
2616         }
2617         if (rc)
2618                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2619         return rc;
2620 }
2621
2622 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2623 {
2624         int cast_type = RTN_UNSPEC;
2625         struct neighbour *n = NULL;
2626         struct dst_entry *dst;
2627
2628         rcu_read_lock();
2629         dst = skb_dst(skb);
2630         if (dst)
2631                 n = dst_neigh_lookup_skb(dst, skb);
2632         if (n) {
2633                 cast_type = n->type;
2634                 rcu_read_unlock();
2635                 neigh_release(n);
2636                 if ((cast_type == RTN_BROADCAST) ||
2637                     (cast_type == RTN_MULTICAST) ||
2638                     (cast_type == RTN_ANYCAST))
2639                         return cast_type;
2640                 else
2641                         return RTN_UNSPEC;
2642         }
2643         rcu_read_unlock();
2644
2645         /* try something else */
2646         if (skb->protocol == ETH_P_IPV6)
2647                 return (skb_network_header(skb)[24] == 0xff) ?
2648                                 RTN_MULTICAST : 0;
2649         else if (skb->protocol == ETH_P_IP)
2650                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2651                                 RTN_MULTICAST : 0;
2652         /* ... */
2653         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2654                 return RTN_BROADCAST;
2655         else {
2656                 u16 hdr_mac;
2657
2658                 hdr_mac = *((u16 *)skb->data);
2659                 /* tr multicast? */
2660                 switch (card->info.link_type) {
2661                 case QETH_LINK_TYPE_HSTR:
2662                 case QETH_LINK_TYPE_LANE_TR:
2663                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2664                             (hdr_mac == QETH_TR_MAC_C))
2665                                 return RTN_MULTICAST;
2666                         break;
2667                 /* eth or so multicast? */
2668                 default:
2669                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2670                             (hdr_mac == QETH_ETH_MAC_V6))
2671                                 return RTN_MULTICAST;
2672                 }
2673         }
2674         return cast_type;
2675 }
2676
2677 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2678                 struct qeth_hdr *hdr, struct sk_buff *skb)
2679 {
2680         char daddr[16];
2681         struct af_iucv_trans_hdr *iucv_hdr;
2682
2683         skb_pull(skb, 14);
2684         card->dev->header_ops->create(skb, card->dev, 0,
2685                                       card->dev->dev_addr, card->dev->dev_addr,
2686                                       card->dev->addr_len);
2687         skb_pull(skb, 14);
2688         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2689         memset(hdr, 0, sizeof(struct qeth_hdr));
2690         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2691         hdr->hdr.l3.ext_flags = 0;
2692         hdr->hdr.l3.length = skb->len;
2693         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2694         memset(daddr, 0, sizeof(daddr));
2695         daddr[0] = 0xfe;
2696         daddr[1] = 0x80;
2697         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2698         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2699 }
2700
2701 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2702                 struct sk_buff *skb, int ipv, int cast_type)
2703 {
2704         struct dst_entry *dst;
2705
2706         memset(hdr, 0, sizeof(struct qeth_hdr));
2707         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2708         hdr->hdr.l3.ext_flags = 0;
2709
2710         /*
2711          * before we're going to overwrite this location with next hop ip.
2712          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2713          */
2714         if (skb_vlan_tag_present(skb)) {
2715                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2716                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2717                 else
2718                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2719                 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2720         }
2721
2722         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2723
2724         rcu_read_lock();
2725         dst = skb_dst(skb);
2726         if (ipv == 4) {
2727                 struct rtable *rt = (struct rtable *) dst;
2728                 __be32 *pkey = &ip_hdr(skb)->daddr;
2729
2730                 if (rt->rt_gateway)
2731                         pkey = &rt->rt_gateway;
2732
2733                 /* IPv4 */
2734                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2735                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2736                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2737         } else if (ipv == 6) {
2738                 struct rt6_info *rt = (struct rt6_info *) dst;
2739                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2740
2741                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2742                         pkey = &rt->rt6i_gateway;
2743
2744                 /* IPv6 */
2745                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2746                 if (card->info.type == QETH_CARD_TYPE_IQD)
2747                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2748                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2749         } else {
2750                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2751                             skb->dev->broadcast, 6)) {
2752                         /* broadcast? */
2753                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2754                                                 QETH_HDR_PASSTHRU;
2755                 } else {
2756                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2757                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2758                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2759                 }
2760         }
2761         rcu_read_unlock();
2762 }
2763
2764 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2765                 struct qeth_hdr *hdr, struct sk_buff *skb)
2766 {
2767         struct iphdr *iph = ip_hdr(skb);
2768
2769         /* tcph->check contains already the pseudo hdr checksum
2770          * so just set the header flags
2771          */
2772         if (iph->protocol == IPPROTO_UDP)
2773                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2774         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2775                 QETH_HDR_EXT_CSUM_HDR_REQ;
2776         iph->check = 0;
2777         if (card->options.performance_stats)
2778                 card->perf_stats.tx_csum++;
2779 }
2780
2781 static void qeth_tso_fill_header(struct qeth_card *card,
2782                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2783 {
2784         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2785         struct tcphdr *tcph = tcp_hdr(skb);
2786         struct iphdr *iph = ip_hdr(skb);
2787         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2788
2789         /*fix header to TSO values ...*/
2790         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2791         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2792         /*set values which are fix for the first approach ...*/
2793         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2794         hdr->ext.imb_hdr_no  = 1;
2795         hdr->ext.hdr_type    = 1;
2796         hdr->ext.hdr_version = 1;
2797         hdr->ext.hdr_len     = 28;
2798         /*insert non-fix values */
2799         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2800         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2801         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2802                                        sizeof(struct qeth_hdr_tso));
2803         tcph->check = 0;
2804         if (skb->protocol == ETH_P_IPV6) {
2805                 ip6h->payload_len = 0;
2806                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2807                                                0, IPPROTO_TCP, 0);
2808         } else {
2809                 /*OSA want us to set these values ...*/
2810                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2811                                          0, IPPROTO_TCP, 0);
2812                 iph->tot_len = 0;
2813                 iph->check = 0;
2814         }
2815 }
2816
2817 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2818 {
2819         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2820                 tcp_hdr(skb)->doff * 4;
2821         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2822         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2823
2824         elements += qeth_get_elements_for_frags(skb);
2825
2826         return elements;
2827 }
2828
2829 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2830 {
2831         int rc;
2832         u16 *tag;
2833         struct qeth_hdr *hdr = NULL;
2834         int elements_needed = 0;
2835         int elems;
2836         struct qeth_card *card = dev->ml_priv;
2837         struct sk_buff *new_skb = NULL;
2838         int ipv = qeth_get_ip_version(skb);
2839         int cast_type = qeth_l3_get_cast_type(card, skb);
2840         struct qeth_qdio_out_q *queue =
2841                 card->qdio.out_qs[card->qdio.do_prio_queueing
2842                         || (cast_type && card->info.is_multicast_different) ?
2843                         qeth_get_priority_queue(card, skb, ipv, cast_type) :
2844                         card->qdio.default_out_queue];
2845         int tx_bytes = skb->len;
2846         bool large_send;
2847         int data_offset = -1;
2848         int nr_frags;
2849
2850         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2851              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2852               ((card->options.cq == QETH_CQ_ENABLED) &&
2853                (skb->protocol != ETH_P_AF_IUCV)))) ||
2854             card->options.sniffer)
2855                         goto tx_drop;
2856
2857         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2858                 card->stats.tx_carrier_errors++;
2859                 goto tx_drop;
2860         }
2861
2862         if ((cast_type == RTN_BROADCAST) &&
2863             (card->info.broadcast_capable == 0))
2864                 goto tx_drop;
2865
2866         if (card->options.performance_stats) {
2867                 card->perf_stats.outbound_cnt++;
2868                 card->perf_stats.outbound_start_time = qeth_get_micros();
2869         }
2870
2871         large_send = skb_is_gso(skb);
2872
2873         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2874             (skb_shinfo(skb)->nr_frags == 0)) {
2875                 new_skb = skb;
2876                 if (new_skb->protocol == ETH_P_AF_IUCV)
2877                         data_offset = 0;
2878                 else
2879                         data_offset = ETH_HLEN;
2880                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2881                 if (!hdr)
2882                         goto tx_drop;
2883                 elements_needed++;
2884         } else {
2885                 /* create a clone with writeable headroom */
2886                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2887                                         + VLAN_HLEN);
2888                 if (!new_skb)
2889                         goto tx_drop;
2890         }
2891
2892         if (card->info.type == QETH_CARD_TYPE_IQD) {
2893                 if (data_offset < 0)
2894                         skb_pull(new_skb, ETH_HLEN);
2895         } else {
2896                 if (ipv == 4) {
2897                         skb_pull(new_skb, ETH_HLEN);
2898                 }
2899
2900                 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2901                         skb_push(new_skb, VLAN_HLEN);
2902                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2903                         skb_copy_to_linear_data_offset(new_skb, 4,
2904                                 new_skb->data + 8, 4);
2905                         skb_copy_to_linear_data_offset(new_skb, 8,
2906                                 new_skb->data + 12, 4);
2907                         tag = (u16 *)(new_skb->data + 12);
2908                         *tag = __constant_htons(ETH_P_8021Q);
2909                         *(tag + 1) = htons(skb_vlan_tag_get(new_skb));
2910                 }
2911         }
2912
2913         netif_stop_queue(dev);
2914
2915         /* fix hardware limitation: as long as we do not have sbal
2916          * chaining we can not send long frag lists
2917          */
2918         if (large_send) {
2919                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2920                         if (skb_linearize(new_skb))
2921                                 goto tx_drop;
2922                         if (card->options.performance_stats)
2923                                 card->perf_stats.tx_lin++;
2924                 }
2925         }
2926
2927         if (large_send && (cast_type == RTN_UNSPEC)) {
2928                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2929                                                 sizeof(struct qeth_hdr_tso));
2930                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2931                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2932                 qeth_tso_fill_header(card, hdr, new_skb);
2933                 elements_needed++;
2934         } else {
2935                 if (data_offset < 0) {
2936                         hdr = (struct qeth_hdr *)skb_push(new_skb,
2937                                                 sizeof(struct qeth_hdr));
2938                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2939                                                 cast_type);
2940                 } else {
2941                         if (new_skb->protocol == ETH_P_AF_IUCV)
2942                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2943                         else {
2944                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2945                                                         cast_type);
2946                                 hdr->hdr.l3.length = new_skb->len - data_offset;
2947                         }
2948                 }
2949
2950                 if (skb->ip_summed == CHECKSUM_PARTIAL)
2951                         qeth_l3_hdr_csum(card, hdr, new_skb);
2952         }
2953
2954         elems = qeth_get_elements_no(card, new_skb, elements_needed);
2955         if (!elems) {
2956                 if (data_offset >= 0)
2957                         kmem_cache_free(qeth_core_header_cache, hdr);
2958                 goto tx_drop;
2959         }
2960         elements_needed += elems;
2961         nr_frags = skb_shinfo(new_skb)->nr_frags;
2962
2963         if (card->info.type != QETH_CARD_TYPE_IQD) {
2964                 int len;
2965                 if (large_send)
2966                         len = ((unsigned long)tcp_hdr(new_skb) +
2967                                 tcp_hdr(new_skb)->doff * 4) -
2968                                 (unsigned long)new_skb->data;
2969                 else
2970                         len = sizeof(struct qeth_hdr_layer3);
2971
2972                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2973                         goto tx_drop;
2974                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
2975                                          elements_needed);
2976         } else
2977                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2978                                         elements_needed, data_offset, 0);
2979
2980         if (!rc) {
2981                 card->stats.tx_packets++;
2982                 card->stats.tx_bytes += tx_bytes;
2983                 if (new_skb != skb)
2984                         dev_kfree_skb_any(skb);
2985                 if (card->options.performance_stats) {
2986                         if (large_send) {
2987                                 card->perf_stats.large_send_bytes += tx_bytes;
2988                                 card->perf_stats.large_send_cnt++;
2989                         }
2990                         if (nr_frags) {
2991                                 card->perf_stats.sg_skbs_sent++;
2992                                 /* nr_frags + skb->data */
2993                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
2994                         }
2995                 }
2996                 rc = NETDEV_TX_OK;
2997         } else {
2998                 if (data_offset >= 0)
2999                         kmem_cache_free(qeth_core_header_cache, hdr);
3000
3001                 if (rc == -EBUSY) {
3002                         if (new_skb != skb)
3003                                 dev_kfree_skb_any(new_skb);
3004                         return NETDEV_TX_BUSY;
3005                 } else
3006                         goto tx_drop;
3007         }
3008
3009         netif_wake_queue(dev);
3010         if (card->options.performance_stats)
3011                 card->perf_stats.outbound_time += qeth_get_micros() -
3012                         card->perf_stats.outbound_start_time;
3013         return rc;
3014
3015 tx_drop:
3016         card->stats.tx_dropped++;
3017         card->stats.tx_errors++;
3018         if ((new_skb != skb) && new_skb)
3019                 dev_kfree_skb_any(new_skb);
3020         dev_kfree_skb_any(skb);
3021         netif_wake_queue(dev);
3022         return NETDEV_TX_OK;
3023 }
3024
3025 static int __qeth_l3_open(struct net_device *dev)
3026 {
3027         struct qeth_card *card = dev->ml_priv;
3028         int rc = 0;
3029
3030         QETH_CARD_TEXT(card, 4, "qethopen");
3031         if (card->state == CARD_STATE_UP)
3032                 return rc;
3033         if (card->state != CARD_STATE_SOFTSETUP)
3034                 return -ENODEV;
3035         card->data.state = CH_STATE_UP;
3036         card->state = CARD_STATE_UP;
3037         netif_start_queue(dev);
3038
3039         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3040                 napi_enable(&card->napi);
3041                 napi_schedule(&card->napi);
3042         } else
3043                 rc = -EIO;
3044         return rc;
3045 }
3046
3047 static int qeth_l3_open(struct net_device *dev)
3048 {
3049         struct qeth_card *card = dev->ml_priv;
3050
3051         QETH_CARD_TEXT(card, 5, "qethope_");
3052         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3053                 QETH_CARD_TEXT(card, 3, "openREC");
3054                 return -ERESTARTSYS;
3055         }
3056         return __qeth_l3_open(dev);
3057 }
3058
3059 static int qeth_l3_stop(struct net_device *dev)
3060 {
3061         struct qeth_card *card = dev->ml_priv;
3062
3063         QETH_CARD_TEXT(card, 4, "qethstop");
3064         netif_tx_disable(dev);
3065         if (card->state == CARD_STATE_UP) {
3066                 card->state = CARD_STATE_SOFTSETUP;
3067                 napi_disable(&card->napi);
3068         }
3069         return 0;
3070 }
3071
3072 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3073         netdev_features_t features)
3074 {
3075         struct qeth_card *card = dev->ml_priv;
3076
3077         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3078                 features &= ~NETIF_F_IP_CSUM;
3079         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3080                 features &= ~NETIF_F_TSO;
3081         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3082                 features &= ~NETIF_F_RXCSUM;
3083         return features;
3084 }
3085
3086 static int qeth_l3_set_features(struct net_device *dev,
3087         netdev_features_t features)
3088 {
3089         struct qeth_card *card = dev->ml_priv;
3090         netdev_features_t changed = dev->features ^ features;
3091
3092         if (!(changed & NETIF_F_RXCSUM))
3093                 return 0;
3094
3095         if (card->state == CARD_STATE_DOWN ||
3096             card->state == CARD_STATE_RECOVER)
3097                 return 0;
3098
3099         return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0);
3100 }
3101
3102 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3103         .get_link = ethtool_op_get_link,
3104         .get_strings = qeth_core_get_strings,
3105         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3106         .get_sset_count = qeth_core_get_sset_count,
3107         .get_drvinfo = qeth_core_get_drvinfo,
3108         .get_settings = qeth_core_ethtool_get_settings,
3109 };
3110
3111 /*
3112  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3113  * NOARP on the netdevice is no option because it also turns off neighbor
3114  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3115  * arp resolution but we want the hard header (packet socket will work
3116  * e.g. tcpdump)
3117  */
3118 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3119 {
3120         n->nud_state = NUD_NOARP;
3121         memcpy(n->ha, "FAKELL", 6);
3122         n->output = n->ops->connected_output;
3123         return 0;
3124 }
3125
3126 static int
3127 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3128 {
3129         if (np->tbl->family == AF_INET)
3130                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3131
3132         return 0;
3133 }
3134
3135 static const struct net_device_ops qeth_l3_netdev_ops = {
3136         .ndo_open               = qeth_l3_open,
3137         .ndo_stop               = qeth_l3_stop,
3138         .ndo_get_stats          = qeth_get_stats,
3139         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3140         .ndo_validate_addr      = eth_validate_addr,
3141         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3142         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3143         .ndo_change_mtu         = qeth_change_mtu,
3144         .ndo_fix_features       = qeth_l3_fix_features,
3145         .ndo_set_features       = qeth_l3_set_features,
3146         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3147         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3148         .ndo_tx_timeout         = qeth_tx_timeout,
3149 };
3150
3151 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3152         .ndo_open               = qeth_l3_open,
3153         .ndo_stop               = qeth_l3_stop,
3154         .ndo_get_stats          = qeth_get_stats,
3155         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3156         .ndo_validate_addr      = eth_validate_addr,
3157         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3158         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3159         .ndo_change_mtu         = qeth_change_mtu,
3160         .ndo_fix_features       = qeth_l3_fix_features,
3161         .ndo_set_features       = qeth_l3_set_features,
3162         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3163         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3164         .ndo_tx_timeout         = qeth_tx_timeout,
3165         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3166 };
3167
3168 static int qeth_l3_setup_netdev(struct qeth_card *card)
3169 {
3170         int rc;
3171
3172         if (card->info.type == QETH_CARD_TYPE_OSD ||
3173             card->info.type == QETH_CARD_TYPE_OSX) {
3174                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3175                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3176                         pr_info("qeth_l3: ignoring TR device\n");
3177                         return -ENODEV;
3178                 } else {
3179                         card->dev = alloc_etherdev(0);
3180                         if (!card->dev)
3181                                 return -ENODEV;
3182                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3183
3184                         /*IPv6 address autoconfiguration stuff*/
3185                         qeth_l3_get_unique_id(card);
3186                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3187                                 card->dev->dev_id = card->info.unique_id &
3188                                                          0xffff;
3189                         if (!card->info.guestlan) {
3190                                 card->dev->hw_features = NETIF_F_SG |
3191                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3192                                         NETIF_F_TSO;
3193                                 card->dev->features = NETIF_F_RXCSUM;
3194                         }
3195                 }
3196         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3197                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
3198                                          ether_setup);
3199                 if (!card->dev)
3200                         return -ENODEV;
3201                 card->dev->flags |= IFF_NOARP;
3202                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3203                 rc = qeth_l3_iqd_read_initial_mac(card);
3204                 if (rc)
3205                         return rc;
3206                 if (card->options.hsuid[0])
3207                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3208         } else
3209                 return -ENODEV;
3210
3211         card->dev->ml_priv = card;
3212         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3213         card->dev->mtu = card->info.initial_mtu;
3214         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
3215         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
3216                                 NETIF_F_HW_VLAN_CTAG_RX |
3217                                 NETIF_F_HW_VLAN_CTAG_FILTER;
3218         netif_keep_dst(card->dev);
3219         card->dev->gso_max_size = 15 * PAGE_SIZE;
3220
3221         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3222         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3223         return register_netdev(card->dev);
3224 }
3225
3226 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3227 {
3228         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3229
3230         qeth_l3_create_device_attributes(&gdev->dev);
3231         card->options.layer2 = 0;
3232         card->info.hwtrap = 0;
3233         return 0;
3234 }
3235
3236 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3237 {
3238         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3239
3240         qeth_l3_remove_device_attributes(&cgdev->dev);
3241
3242         qeth_set_allowed_threads(card, 0, 1);
3243         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3244
3245         if (cgdev->state == CCWGROUP_ONLINE)
3246                 qeth_l3_set_offline(cgdev);
3247
3248         if (card->dev) {
3249                 unregister_netdev(card->dev);
3250                 card->dev = NULL;
3251         }
3252
3253         qeth_l3_clear_ip_list(card, 0);
3254         qeth_l3_clear_ipato_list(card);
3255         return;
3256 }
3257
3258 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3259 {
3260         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3261         int rc = 0;
3262         enum qeth_card_states recover_flag;
3263
3264         mutex_lock(&card->discipline_mutex);
3265         mutex_lock(&card->conf_mutex);
3266         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3267         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3268
3269         recover_flag = card->state;
3270         rc = qeth_core_hardsetup_card(card);
3271         if (rc) {
3272                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3273                 rc = -ENODEV;
3274                 goto out_remove;
3275         }
3276
3277         if (!card->dev && qeth_l3_setup_netdev(card)) {
3278                 rc = -ENODEV;
3279                 goto out_remove;
3280         }
3281
3282         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3283                 if (card->info.hwtrap &&
3284                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3285                         card->info.hwtrap = 0;
3286         } else
3287                 card->info.hwtrap = 0;
3288
3289         card->state = CARD_STATE_HARDSETUP;
3290         memset(&card->rx, 0, sizeof(struct qeth_rx));
3291         qeth_print_status_message(card);
3292
3293         /* softsetup */
3294         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3295
3296         rc = qeth_send_startlan(card);
3297         if (rc) {
3298                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3299                 if (rc == 0xe080) {
3300                         dev_warn(&card->gdev->dev,
3301                                 "The LAN is offline\n");
3302                         card->lan_online = 0;
3303                         goto contin;
3304                 }
3305                 rc = -ENODEV;
3306                 goto out_remove;
3307         } else
3308                 card->lan_online = 1;
3309
3310 contin:
3311         rc = qeth_l3_setadapter_parms(card);
3312         if (rc)
3313                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3314         if (!card->options.sniffer) {
3315                 rc = qeth_l3_start_ipassists(card);
3316                 if (rc) {
3317                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3318                         goto out_remove;
3319                 }
3320                 rc = qeth_l3_setrouting_v4(card);
3321                 if (rc)
3322                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3323                 rc = qeth_l3_setrouting_v6(card);
3324                 if (rc)
3325                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3326         }
3327         netif_tx_disable(card->dev);
3328
3329         rc = qeth_init_qdio_queues(card);
3330         if (rc) {
3331                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3332                 rc = -ENODEV;
3333                 goto out_remove;
3334         }
3335         card->state = CARD_STATE_SOFTSETUP;
3336
3337         qeth_set_allowed_threads(card, 0xffffffff, 0);
3338         qeth_l3_set_ip_addr_list(card);
3339         if (card->lan_online)
3340                 netif_carrier_on(card->dev);
3341         else
3342                 netif_carrier_off(card->dev);
3343         if (recover_flag == CARD_STATE_RECOVER) {
3344                 rtnl_lock();
3345                 if (recovery_mode)
3346                         __qeth_l3_open(card->dev);
3347                 else
3348                         dev_open(card->dev);
3349                 qeth_l3_set_multicast_list(card->dev);
3350                 rtnl_unlock();
3351         }
3352         qeth_trace_features(card);
3353         /* let user_space know that device is online */
3354         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3355         mutex_unlock(&card->conf_mutex);
3356         mutex_unlock(&card->discipline_mutex);
3357         return 0;
3358 out_remove:
3359         qeth_l3_stop_card(card, 0);
3360         ccw_device_set_offline(CARD_DDEV(card));
3361         ccw_device_set_offline(CARD_WDEV(card));
3362         ccw_device_set_offline(CARD_RDEV(card));
3363         qdio_free(CARD_DDEV(card));
3364         if (recover_flag == CARD_STATE_RECOVER)
3365                 card->state = CARD_STATE_RECOVER;
3366         else
3367                 card->state = CARD_STATE_DOWN;
3368         mutex_unlock(&card->conf_mutex);
3369         mutex_unlock(&card->discipline_mutex);
3370         return rc;
3371 }
3372
3373 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3374 {
3375         return __qeth_l3_set_online(gdev, 0);
3376 }
3377
3378 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3379                         int recovery_mode)
3380 {
3381         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3382         int rc = 0, rc2 = 0, rc3 = 0;
3383         enum qeth_card_states recover_flag;
3384
3385         mutex_lock(&card->discipline_mutex);
3386         mutex_lock(&card->conf_mutex);
3387         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3388         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3389
3390         if (card->dev && netif_carrier_ok(card->dev))
3391                 netif_carrier_off(card->dev);
3392         recover_flag = card->state;
3393         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3394                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3395                 card->info.hwtrap = 1;
3396         }
3397         qeth_l3_stop_card(card, recovery_mode);
3398         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3399                 rtnl_lock();
3400                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3401                 rtnl_unlock();
3402         }
3403         rc  = ccw_device_set_offline(CARD_DDEV(card));
3404         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3405         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3406         if (!rc)
3407                 rc = (rc2) ? rc2 : rc3;
3408         if (rc)
3409                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3410         qdio_free(CARD_DDEV(card));
3411         if (recover_flag == CARD_STATE_UP)
3412                 card->state = CARD_STATE_RECOVER;
3413         /* let user_space know that device is offline */
3414         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3415         mutex_unlock(&card->conf_mutex);
3416         mutex_unlock(&card->discipline_mutex);
3417         return 0;
3418 }
3419
3420 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3421 {
3422         return __qeth_l3_set_offline(cgdev, 0);
3423 }
3424
3425 static int qeth_l3_recover(void *ptr)
3426 {
3427         struct qeth_card *card;
3428         int rc = 0;
3429
3430         card = (struct qeth_card *) ptr;
3431         QETH_CARD_TEXT(card, 2, "recover1");
3432         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3433         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3434                 return 0;
3435         QETH_CARD_TEXT(card, 2, "recover2");
3436         dev_warn(&card->gdev->dev,
3437                 "A recovery process has been started for the device\n");
3438         qeth_set_recovery_task(card);
3439         __qeth_l3_set_offline(card->gdev, 1);
3440         rc = __qeth_l3_set_online(card->gdev, 1);
3441         if (!rc)
3442                 dev_info(&card->gdev->dev,
3443                         "Device successfully recovered!\n");
3444         else {
3445                 qeth_close_dev(card);
3446                 dev_warn(&card->gdev->dev, "The qeth device driver "
3447                                 "failed to recover an error on the device\n");
3448         }
3449         qeth_clear_recovery_task(card);
3450         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3451         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3452         return 0;
3453 }
3454
3455 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3456 {
3457         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3458         qeth_set_allowed_threads(card, 0, 1);
3459         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3460                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3461         qeth_qdio_clear_card(card, 0);
3462         qeth_clear_qdio_buffers(card);
3463         qdio_free(CARD_DDEV(card));
3464 }
3465
3466 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3467 {
3468         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3469
3470         if (card->dev)
3471                 netif_device_detach(card->dev);
3472         qeth_set_allowed_threads(card, 0, 1);
3473         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3474         if (gdev->state == CCWGROUP_OFFLINE)
3475                 return 0;
3476         if (card->state == CARD_STATE_UP) {
3477                 if (card->info.hwtrap)
3478                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3479                 __qeth_l3_set_offline(card->gdev, 1);
3480         } else
3481                 __qeth_l3_set_offline(card->gdev, 0);
3482         return 0;
3483 }
3484
3485 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3486 {
3487         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3488         int rc = 0;
3489
3490         if (gdev->state == CCWGROUP_OFFLINE)
3491                 goto out;
3492
3493         if (card->state == CARD_STATE_RECOVER) {
3494                 rc = __qeth_l3_set_online(card->gdev, 1);
3495                 if (rc) {
3496                         rtnl_lock();
3497                         dev_close(card->dev);
3498                         rtnl_unlock();
3499                 }
3500         } else
3501                 rc = __qeth_l3_set_online(card->gdev, 0);
3502 out:
3503         qeth_set_allowed_threads(card, 0xffffffff, 0);
3504         if (card->dev)
3505                 netif_device_attach(card->dev);
3506         if (rc)
3507                 dev_warn(&card->gdev->dev, "The qeth device driver "
3508                         "failed to recover an error on the device\n");
3509         return rc;
3510 }
3511
3512 /* Returns zero if the command is successfully "consumed" */
3513 static int qeth_l3_control_event(struct qeth_card *card,
3514                                         struct qeth_ipa_cmd *cmd)
3515 {
3516         return 1;
3517 }
3518
3519 struct qeth_discipline qeth_l3_discipline = {
3520         .start_poll = qeth_qdio_start_poll,
3521         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3522         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3523         .recover = qeth_l3_recover,
3524         .setup = qeth_l3_probe_device,
3525         .remove = qeth_l3_remove_device,
3526         .set_online = qeth_l3_set_online,
3527         .set_offline = qeth_l3_set_offline,
3528         .shutdown = qeth_l3_shutdown,
3529         .freeze = qeth_l3_pm_suspend,
3530         .thaw = qeth_l3_pm_resume,
3531         .restore = qeth_l3_pm_resume,
3532         .control_event_handler = qeth_l3_control_event,
3533 };
3534 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3535
3536 static int qeth_l3_ip_event(struct notifier_block *this,
3537                             unsigned long event, void *ptr)
3538 {
3539         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3540         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3541         struct qeth_ipaddr *addr;
3542         struct qeth_card *card;
3543
3544         if (dev_net(dev) != &init_net)
3545                 return NOTIFY_DONE;
3546
3547         card = qeth_l3_get_card_from_dev(dev);
3548         if (!card)
3549                 return NOTIFY_DONE;
3550         QETH_CARD_TEXT(card, 3, "ipevent");
3551
3552         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3553         if (addr != NULL) {
3554                 addr->u.a4.addr = ifa->ifa_address;
3555                 addr->u.a4.mask = ifa->ifa_mask;
3556                 addr->type = QETH_IP_TYPE_NORMAL;
3557         } else
3558                 goto out;
3559
3560         switch (event) {
3561         case NETDEV_UP:
3562                 if (!qeth_l3_add_ip(card, addr))
3563                         kfree(addr);
3564                 break;
3565         case NETDEV_DOWN:
3566                 if (!qeth_l3_delete_ip(card, addr))
3567                         kfree(addr);
3568                 break;
3569         default:
3570                 break;
3571         }
3572         qeth_l3_set_ip_addr_list(card);
3573 out:
3574         return NOTIFY_DONE;
3575 }
3576
3577 static struct notifier_block qeth_l3_ip_notifier = {
3578         qeth_l3_ip_event,
3579         NULL,
3580 };
3581
3582 #ifdef CONFIG_QETH_IPV6
3583 /**
3584  * IPv6 event handler
3585  */
3586 static int qeth_l3_ip6_event(struct notifier_block *this,
3587                              unsigned long event, void *ptr)
3588 {
3589         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3590         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3591         struct qeth_ipaddr *addr;
3592         struct qeth_card *card;
3593
3594         card = qeth_l3_get_card_from_dev(dev);
3595         if (!card)
3596                 return NOTIFY_DONE;
3597         QETH_CARD_TEXT(card, 3, "ip6event");
3598         if (!qeth_is_supported(card, IPA_IPV6))
3599                 return NOTIFY_DONE;
3600
3601         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3602         if (addr != NULL) {
3603                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3604                 addr->u.a6.pfxlen = ifa->prefix_len;
3605                 addr->type = QETH_IP_TYPE_NORMAL;
3606         } else
3607                 goto out;
3608
3609         switch (event) {
3610         case NETDEV_UP:
3611                 if (!qeth_l3_add_ip(card, addr))
3612                         kfree(addr);
3613                 break;
3614         case NETDEV_DOWN:
3615                 if (!qeth_l3_delete_ip(card, addr))
3616                         kfree(addr);
3617                 break;
3618         default:
3619                 break;
3620         }
3621         qeth_l3_set_ip_addr_list(card);
3622 out:
3623         return NOTIFY_DONE;
3624 }
3625
3626 static struct notifier_block qeth_l3_ip6_notifier = {
3627         qeth_l3_ip6_event,
3628         NULL,
3629 };
3630 #endif
3631
3632 static int qeth_l3_register_notifiers(void)
3633 {
3634         int rc;
3635
3636         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3637         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3638         if (rc)
3639                 return rc;
3640 #ifdef CONFIG_QETH_IPV6
3641         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3642         if (rc) {
3643                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3644                 return rc;
3645         }
3646 #else
3647         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3648 #endif
3649         return 0;
3650 }
3651
3652 static void qeth_l3_unregister_notifiers(void)
3653 {
3654
3655         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3656         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3657 #ifdef CONFIG_QETH_IPV6
3658         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3659 #endif /* QETH_IPV6 */
3660 }
3661
3662 static int __init qeth_l3_init(void)
3663 {
3664         int rc = 0;
3665
3666         pr_info("register layer 3 discipline\n");
3667         rc = qeth_l3_register_notifiers();
3668         return rc;
3669 }
3670
3671 static void __exit qeth_l3_exit(void)
3672 {
3673         qeth_l3_unregister_notifiers();
3674         pr_info("unregister layer 3 discipline\n");
3675 }
3676
3677 module_init(qeth_l3_init);
3678 module_exit(qeth_l3_exit);
3679 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3680 MODULE_DESCRIPTION("qeth layer 3 discipline");
3681 MODULE_LICENSE("GPL");