drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/bitops.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/mii.h>
  20 #include <linux/ip.h>
  21 #include <linux/ipv6.h>
  22 #include <linux/inetdevice.h>
  23 #include <linux/igmp.h>
  24 #include <linux/slab.h>
  25 #include <linux/if_vlan.h>
  26
  27 #include <net/ip.h>
  28 #include <net/arp.h>
  29 #include <net/route.h>
  30 #include <net/ip6_fib.h>
  31 #include <net/ip6_checksum.h>
  32 #include <net/iucv/af_iucv.h>
  33
  34 #include "qeth_l3.h"
  35
  36
  37 static int qeth_l3_set_offline(struct ccwgroup_device *);
  38 static int qeth_l3_recover(void *);
  39 static int qeth_l3_stop(struct net_device *);
  40 static void qeth_l3_set_multicast_list(struct net_device *);
  41 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  42 static int qeth_l3_register_addr_entry(struct qeth_card *,
  43                 struct qeth_ipaddr *);
  44 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  45                 struct qeth_ipaddr *);
  46 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  47 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  48
  49 static int qeth_l3_isxdigit(char *buf)
  50 {
  51         while (*buf) {
  52                 if (!isxdigit(*buf++))
  53                         return 0;
  54         }
  55         return 1;
  56 }
  57
  58 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  59 {
  60         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
  61 }
  62
  63 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  64 {
  65         int count = 0, rc = 0;
  66         int in[4];
  67         char c;
  68
  69         rc = sscanf(buf, "%u.%u.%u.%u%c",
  70                     &in[0], &in[1], &in[2], &in[3], &c);
  71         if (rc != 4 && (rc != 5 || c != '\n'))
  72                 return -EINVAL;
  73         for (count = 0; count < 4; count++) {
  74                 if (in[count] > 255)
  75                         return -EINVAL;
  76                 addr[count] = in[count];
  77         }
  78         return 0;
  79 }
  80
  81 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  82 {
  83         sprintf(buf, "%pI6", addr);
  84 }
  85
  86 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  87 {
  88         const char *end, *end_tmp, *start;
  89         __u16 *in;
  90         char num[5];
  91         int num2, cnt, out, found, save_cnt;
  92         unsigned short in_tmp[8] = {0, };
  93
  94         cnt = out = found = save_cnt = num2 = 0;
  95         end = start = buf;
  96         in = (__u16 *) addr;
  97         memset(in, 0, 16);
  98         while (*end) {
  99                 end = strchr(start, ':');
 100                 if (end == NULL) {
 101                         end = buf + strlen(buf);
 102                         end_tmp = strchr(start, '\n');
 103                         if (end_tmp != NULL)
 104                                 end = end_tmp;
 105                         out = 1;
 106                 }
 107                 if ((end - start)) {
 108                         memset(num, 0, 5);
 109                         if ((end - start) > 4)
 110                                 return -EINVAL;
 111                         memcpy(num, start, end - start);
 112                         if (!qeth_l3_isxdigit(num))
 113                                 return -EINVAL;
 114                         sscanf(start, "%x", &num2);
 115                         if (found)
 116                                 in_tmp[save_cnt++] = num2;
 117                         else
 118                                 in[cnt++] = num2;
 119                         if (out)
 120                                 break;
 121                 } else {
 122                         if (found)
 123                                 return -EINVAL;
 124                         found = 1;
 125                 }
 126                 start = ++end;
 127         }
 128         if (cnt + save_cnt > 8)
 129                 return -EINVAL;
 130         cnt = 7;
 131         while (save_cnt)
 132                 in[cnt--] = in_tmp[--save_cnt];
 133         return 0;
 134 }
 135
 136 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 137                                 char *buf)
 138 {
 139         if (proto == QETH_PROT_IPV4)
 140                 qeth_l3_ipaddr4_to_string(addr, buf);
 141         else if (proto == QETH_PROT_IPV6)
 142                 qeth_l3_ipaddr6_to_string(addr, buf);
 143 }
 144
 145 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 146                                 __u8 *addr)
 147 {
 148         if (proto == QETH_PROT_IPV4)
 149                 return qeth_l3_string_to_ipaddr4(buf, addr);
 150         else if (proto == QETH_PROT_IPV6)
 151                 return qeth_l3_string_to_ipaddr6(buf, addr);
 152         else
 153                 return -EINVAL;
 154 }
 155
 156 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 157 {
 158         int i, j;
 159         u8 octet;
 160
 161         for (i = 0; i < len; ++i) {
 162                 octet = addr[i];
 163                 for (j = 7; j >= 0; --j) {
 164                         bits[i*8 + j] = octet & 1;
 165                         octet >>= 1;
 166                 }
 167         }
 168 }
 169
 170 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 171                                                 struct qeth_ipaddr *addr)
 172 {
 173         struct qeth_ipato_entry *ipatoe;
 174         u8 addr_bits[128] = {0, };
 175         u8 ipatoe_bits[128] = {0, };
 176         int rc = 0;
 177
 178         if (!card->ipato.enabled)
 179                 return 0;
 180
 181         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 182                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 183         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 184                 if (addr->proto != ipatoe->proto)
 185                         continue;
 186                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 187                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 188                                           4 : 16);
 189                 if (addr->proto == QETH_PROT_IPV4)
 190                         rc = !memcmp(addr_bits, ipatoe_bits,
 191                                      min(32, ipatoe->mask_bits));
 192                 else
 193                         rc = !memcmp(addr_bits, ipatoe_bits,
 194                                      min(128, ipatoe->mask_bits));
 195                 if (rc)
 196                         break;
 197         }
 198         /* invert? */
 199         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 200                 rc = !rc;
 201         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 202                 rc = !rc;
 203
 204         return rc;
 205 }
 206
 207 /*
 208  * Add IP to be added to todo list. If there is already an "add todo"
 209  * in this list we just incremenent the reference count.
 210  * Returns 0 if we  just incremented reference count.
 211  */
 212 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
 213                                         struct qeth_ipaddr *addr, int add)
 214 {
 215         struct qeth_ipaddr *tmp, *t;
 216         int found = 0;
 217
 218         if (card->options.sniffer)
 219                 return 0;
 220         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
 221                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
 222                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
 223                         return 0;
 224                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
 225                     (addr->proto       == QETH_PROT_IPV4)     &&
 226                     (tmp->type         == addr->type)         &&
 227                     (tmp->is_multicast == addr->is_multicast) &&
 228                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
 229                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
 230                         found = 1;
 231                         break;
 232                 }
 233                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
 234                     (addr->proto       == QETH_PROT_IPV6)      &&
 235                     (tmp->type         == addr->type)          &&
 236                     (tmp->is_multicast == addr->is_multicast)  &&
 237                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
 238                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 239                             sizeof(struct in6_addr)) == 0)) {
 240                         found = 1;
 241                         break;
 242                 }
 243         }
 244         if (found) {
 245                 if (addr->users != 0)
 246                         tmp->users += addr->users;
 247                 else
 248                         tmp->users += add ? 1 : -1;
 249                 if (tmp->users == 0) {
 250                         list_del(&tmp->entry);
 251                         kfree(tmp);
 252                 }
 253                 return 0;
 254         } else {
 255                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
 256                         list_add(&addr->entry, card->ip_tbd_list);
 257                 else {
 258                         if (addr->users == 0)
 259                                 addr->users += add ? 1 : -1;
 260                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
 261                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 262                                 QETH_CARD_TEXT(card, 2, "tkovaddr");
 263                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 264                         }
 265                         list_add_tail(&addr->entry, card->ip_tbd_list);
 266                 }
 267                 return 1;
 268         }
 269 }
 270
 271 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 272 {
 273         unsigned long flags;
 274         int rc = 0;
 275
 276         QETH_CARD_TEXT(card, 4, "delip");
 277
 278         if (addr->proto == QETH_PROT_IPV4)
 279                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 280         else {
 281                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 282                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 283         }
 284         spin_lock_irqsave(&card->ip_lock, flags);
 285         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
 286         spin_unlock_irqrestore(&card->ip_lock, flags);
 287         return rc;
 288 }
 289
 290 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 291 {
 292         unsigned long flags;
 293         int rc = 0;
 294
 295         QETH_CARD_TEXT(card, 4, "addip");
 296         if (addr->proto == QETH_PROT_IPV4)
 297                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 298         else {
 299                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 300                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 301         }
 302         spin_lock_irqsave(&card->ip_lock, flags);
 303         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
 304         spin_unlock_irqrestore(&card->ip_lock, flags);
 305         return rc;
 306 }
 307
 308
 309 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 310                                 enum qeth_prot_versions prot)
 311 {
 312         struct qeth_ipaddr *addr;
 313
 314         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 315         if (addr == NULL) {
 316                 return NULL;
 317         }
 318         addr->type = QETH_IP_TYPE_NORMAL;
 319         addr->proto = prot;
 320         return addr;
 321 }
 322
 323 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
 324 {
 325         struct qeth_ipaddr *iptodo;
 326         unsigned long flags;
 327
 328         QETH_CARD_TEXT(card, 4, "delmc");
 329         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
 330         if (!iptodo) {
 331                 QETH_CARD_TEXT(card, 2, "dmcnomem");
 332                 return;
 333         }
 334         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
 335         spin_lock_irqsave(&card->ip_lock, flags);
 336         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
 337                 kfree(iptodo);
 338         spin_unlock_irqrestore(&card->ip_lock, flags);
 339 }
 340
 341 /*
 342  * Add/remove address to/from card's ip list, i.e. try to add or remove
 343  * reference to/from an IP address that is already registered on the card.
 344  * Returns:
 345  *      0  address was on card and its reference count has been adjusted,
 346  *         but is still > 0, so nothing has to be done
 347  *         also returns 0 if card was not on card and the todo was to delete
 348  *         the address -> there is also nothing to be done
 349  *      1  address was not on card and the todo is to add it to the card's ip
 350  *         list
 351  *      -1 address was on card and its reference count has been decremented
 352  *         to <= 0 by the todo -> address must be removed from card
 353  */
 354 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
 355                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
 356 {
 357         struct qeth_ipaddr *addr;
 358         int found = 0;
 359
 360         list_for_each_entry(addr, &card->ip_list, entry) {
 361                 if ((addr->proto == QETH_PROT_IPV4) &&
 362                     (todo->proto == QETH_PROT_IPV4) &&
 363                     (addr->type == todo->type) &&
 364                     (addr->u.a4.addr == todo->u.a4.addr) &&
 365                     (addr->u.a4.mask == todo->u.a4.mask)) {
 366                         found = 1;
 367                         break;
 368                 }
 369                 if ((addr->proto == QETH_PROT_IPV6) &&
 370                     (todo->proto == QETH_PROT_IPV6) &&
 371                     (addr->type == todo->type) &&
 372                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
 373                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
 374                             sizeof(struct in6_addr)) == 0)) {
 375                         found = 1;
 376                         break;
 377                 }
 378         }
 379         if (found) {
 380                 addr->users += todo->users;
 381                 if (addr->users <= 0) {
 382                         *__addr = addr;
 383                         return -1;
 384                 } else {
 385                         /* for VIPA and RXIP limit refcount to 1 */
 386                         if (addr->type != QETH_IP_TYPE_NORMAL)
 387                                 addr->users = 1;
 388                         return 0;
 389                 }
 390         }
 391         if (todo->users > 0) {
 392                 /* for VIPA and RXIP limit refcount to 1 */
 393                 if (todo->type != QETH_IP_TYPE_NORMAL)
 394                         todo->users = 1;
 395                 return 1;
 396         } else
 397                 return 0;
 398 }
 399
 400 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
 401                                         unsigned long *flags)
 402 {
 403         struct list_head fail_list;
 404         struct qeth_ipaddr *addr, *tmp;
 405         int rc;
 406
 407         INIT_LIST_HEAD(&fail_list);
 408 again:
 409         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
 410                 if (addr->is_multicast) {
 411                         list_del(&addr->entry);
 412                         spin_unlock_irqrestore(&card->ip_lock, *flags);
 413                         rc = qeth_l3_deregister_addr_entry(card, addr);
 414                         spin_lock_irqsave(&card->ip_lock, *flags);
 415                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
 416                                 kfree(addr);
 417                         else
 418                                 list_add_tail(&addr->entry, &fail_list);
 419                         goto again;
 420                 }
 421         }
 422         list_splice(&fail_list, &card->ip_list);
 423 }
 424
 425 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
 426 {
 427         struct list_head *tbd_list;
 428         struct qeth_ipaddr *todo, *addr;
 429         unsigned long flags;
 430         int rc;
 431
 432         QETH_CARD_TEXT(card, 2, "sdiplist");
 433         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
 434
 435         if ((card->state != CARD_STATE_UP &&
 436              card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
 437                 return;
 438         }
 439
 440         spin_lock_irqsave(&card->ip_lock, flags);
 441         tbd_list = card->ip_tbd_list;
 442         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
 443         if (!card->ip_tbd_list) {
 444                 QETH_CARD_TEXT(card, 0, "silnomem");
 445                 card->ip_tbd_list = tbd_list;
 446                 spin_unlock_irqrestore(&card->ip_lock, flags);
 447                 return;
 448         } else
 449                 INIT_LIST_HEAD(card->ip_tbd_list);
 450
 451         while (!list_empty(tbd_list)) {
 452                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
 453                 list_del(&todo->entry);
 454                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
 455                         __qeth_l3_delete_all_mc(card, &flags);
 456                         kfree(todo);
 457                         continue;
 458                 }
 459                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
 460                 if (rc == 0) {
 461                         /* nothing to be done; only adjusted refcount */
 462                         kfree(todo);
 463                 } else if (rc == 1) {
 464                         /* new entry to be added to on-card list */
 465                         spin_unlock_irqrestore(&card->ip_lock, flags);
 466                         rc = qeth_l3_register_addr_entry(card, todo);
 467                         spin_lock_irqsave(&card->ip_lock, flags);
 468                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
 469                                 list_add_tail(&todo->entry, &card->ip_list);
 470                         else
 471                                 kfree(todo);
 472                 } else if (rc == -1) {
 473                         /* on-card entry to be removed */
 474                         list_del_init(&addr->entry);
 475                         spin_unlock_irqrestore(&card->ip_lock, flags);
 476                         rc = qeth_l3_deregister_addr_entry(card, addr);
 477                         spin_lock_irqsave(&card->ip_lock, flags);
 478                         if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
 479                                 kfree(addr);
 480                         else
 481                                 list_add_tail(&addr->entry, &card->ip_list);
 482                         kfree(todo);
 483                 }
 484         }
 485         spin_unlock_irqrestore(&card->ip_lock, flags);
 486         kfree(tbd_list);
 487 }
 488
 489 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
 490 {
 491         struct qeth_ipaddr *addr, *tmp;
 492         unsigned long flags;
 493
 494         QETH_CARD_TEXT(card, 4, "clearip");
 495         if (recover && card->options.sniffer)
 496                 return;
 497         spin_lock_irqsave(&card->ip_lock, flags);
 498         /* clear todo list */
 499         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
 500                 list_del(&addr->entry);
 501                 kfree(addr);
 502         }
 503
 504         while (!list_empty(&card->ip_list)) {
 505                 addr = list_entry(card->ip_list.next,
 506                                   struct qeth_ipaddr, entry);
 507                 list_del_init(&addr->entry);
 508                 if (!recover || addr->is_multicast) {
 509                         kfree(addr);
 510                         continue;
 511                 }
 512                 list_add_tail(&addr->entry, card->ip_tbd_list);
 513         }
 514         spin_unlock_irqrestore(&card->ip_lock, flags);
 515 }
 516
 517 static int qeth_l3_address_exists_in_list(struct list_head *list,
 518                 struct qeth_ipaddr *addr, int same_type)
 519 {
 520         struct qeth_ipaddr *tmp;
 521
 522         list_for_each_entry(tmp, list, entry) {
 523                 if ((tmp->proto == QETH_PROT_IPV4) &&
 524                     (addr->proto == QETH_PROT_IPV4) &&
 525                     ((same_type && (tmp->type == addr->type)) ||
 526                     (!same_type && (tmp->type != addr->type))) &&
 527                     (tmp->u.a4.addr == addr->u.a4.addr))
 528                         return 1;
 529
 530                 if ((tmp->proto == QETH_PROT_IPV6) &&
 531                     (addr->proto == QETH_PROT_IPV6) &&
 532                     ((same_type && (tmp->type == addr->type)) ||
 533                     (!same_type && (tmp->type != addr->type))) &&
 534                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 535                             sizeof(struct in6_addr)) == 0))
 536                         return 1;
 537
 538         }
 539         return 0;
 540 }
 541
 542 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 543                         struct qeth_ipaddr *addr, int ipacmd)
 544 {
 545         int rc;
 546         struct qeth_cmd_buffer *iob;
 547         struct qeth_ipa_cmd *cmd;
 548
 549         QETH_CARD_TEXT(card, 4, "setdelmc");
 550
 551         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 552         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 553         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 554         if (addr->proto == QETH_PROT_IPV6)
 555                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 556                        sizeof(struct in6_addr));
 557         else
 558                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 559
 560         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 561
 562         return rc;
 563 }
 564
 565 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 566 {
 567         int i, j;
 568         for (i = 0; i < 16; i++) {
 569                 j = (len) - (i * 8);
 570                 if (j >= 8)
 571                         netmask[i] = 0xff;
 572                 else if (j > 0)
 573                         netmask[i] = (u8)(0xFF00 >> j);
 574                 else
 575                         netmask[i] = 0;
 576         }
 577 }
 578
 579 static int qeth_l3_send_setdelip(struct qeth_card *card,
 580                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 581 {
 582         int rc;
 583         struct qeth_cmd_buffer *iob;
 584         struct qeth_ipa_cmd *cmd;
 585         __u8 netmask[16];
 586
 587         QETH_CARD_TEXT(card, 4, "setdelip");
 588         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 589
 590         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 591         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 592         if (addr->proto == QETH_PROT_IPV6) {
 593                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 594                        sizeof(struct in6_addr));
 595                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 596                 memcpy(cmd->data.setdelip6.mask, netmask,
 597                        sizeof(struct in6_addr));
 598                 cmd->data.setdelip6.flags = flags;
 599         } else {
 600                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 601                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 602                 cmd->data.setdelip4.flags = flags;
 603         }
 604
 605         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 606
 607         return rc;
 608 }
 609
 610 static int qeth_l3_send_setrouting(struct qeth_card *card,
 611         enum qeth_routing_types type, enum qeth_prot_versions prot)
 612 {
 613         int rc;
 614         struct qeth_ipa_cmd *cmd;
 615         struct qeth_cmd_buffer *iob;
 616
 617         QETH_CARD_TEXT(card, 4, "setroutg");
 618         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 619         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 620         cmd->data.setrtg.type = (type);
 621         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 622
 623         return rc;
 624 }
 625
 626 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 627                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 628 {
 629         if (card->info.type == QETH_CARD_TYPE_IQD) {
 630                 switch (*type) {
 631                 case NO_ROUTER:
 632                 case PRIMARY_CONNECTOR:
 633                 case SECONDARY_CONNECTOR:
 634                 case MULTICAST_ROUTER:
 635                         return 0;
 636                 default:
 637                         goto out_inval;
 638                 }
 639         } else {
 640                 switch (*type) {
 641                 case NO_ROUTER:
 642                 case PRIMARY_ROUTER:
 643                 case SECONDARY_ROUTER:
 644                         return 0;
 645                 case MULTICAST_ROUTER:
 646                         if (qeth_is_ipafunc_supported(card, prot,
 647                                                       IPA_OSA_MC_ROUTER))
 648                                 return 0;
 649                 default:
 650                         goto out_inval;
 651                 }
 652         }
 653 out_inval:
 654         *type = NO_ROUTER;
 655         return -EINVAL;
 656 }
 657
 658 int qeth_l3_setrouting_v4(struct qeth_card *card)
 659 {
 660         int rc;
 661
 662         QETH_CARD_TEXT(card, 3, "setrtg4");
 663
 664         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 665                                   QETH_PROT_IPV4);
 666         if (rc)
 667                 return rc;
 668
 669         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 670                                   QETH_PROT_IPV4);
 671         if (rc) {
 672                 card->options.route4.type = NO_ROUTER;
 673                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 674                         " on %s. Type set to 'no router'.\n", rc,
 675                         QETH_CARD_IFNAME(card));
 676         }
 677         return rc;
 678 }
 679
 680 int qeth_l3_setrouting_v6(struct qeth_card *card)
 681 {
 682         int rc = 0;
 683
 684         QETH_CARD_TEXT(card, 3, "setrtg6");
 685 #ifdef CONFIG_QETH_IPV6
 686
 687         if (!qeth_is_supported(card, IPA_IPV6))
 688                 return 0;
 689         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 690                                   QETH_PROT_IPV6);
 691         if (rc)
 692                 return rc;
 693
 694         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 695                                   QETH_PROT_IPV6);
 696         if (rc) {
 697                 card->options.route6.type = NO_ROUTER;
 698                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 699                         " on %s. Type set to 'no router'.\n", rc,
 700                         QETH_CARD_IFNAME(card));
 701         }
 702 #endif
 703         return rc;
 704 }
 705
 706 /*
 707  * IP address takeover related functions
 708  */
 709 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 710 {
 711
 712         struct qeth_ipato_entry *ipatoe, *tmp;
 713         unsigned long flags;
 714
 715         spin_lock_irqsave(&card->ip_lock, flags);
 716         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 717                 list_del(&ipatoe->entry);
 718                 kfree(ipatoe);
 719         }
 720         spin_unlock_irqrestore(&card->ip_lock, flags);
 721 }
 722
 723 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 724                                 struct qeth_ipato_entry *new)
 725 {
 726         struct qeth_ipato_entry *ipatoe;
 727         unsigned long flags;
 728         int rc = 0;
 729
 730         QETH_CARD_TEXT(card, 2, "addipato");
 731         spin_lock_irqsave(&card->ip_lock, flags);
 732         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 733                 if (ipatoe->proto != new->proto)
 734                         continue;
 735                 if (!memcmp(ipatoe->addr, new->addr,
 736                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 737                     (ipatoe->mask_bits == new->mask_bits)) {
 738                         rc = -EEXIST;
 739                         break;
 740                 }
 741         }
 742         if (!rc)
 743                 list_add_tail(&new->entry, &card->ipato.entries);
 744
 745         spin_unlock_irqrestore(&card->ip_lock, flags);
 746         return rc;
 747 }
 748
 749 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 750                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 751 {
 752         struct qeth_ipato_entry *ipatoe, *tmp;
 753         unsigned long flags;
 754
 755         QETH_CARD_TEXT(card, 2, "delipato");
 756         spin_lock_irqsave(&card->ip_lock, flags);
 757         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 758                 if (ipatoe->proto != proto)
 759                         continue;
 760                 if (!memcmp(ipatoe->addr, addr,
 761                             (proto == QETH_PROT_IPV4)? 4:16) &&
 762                     (ipatoe->mask_bits == mask_bits)) {
 763                         list_del(&ipatoe->entry);
 764                         kfree(ipatoe);
 765                 }
 766         }
 767         spin_unlock_irqrestore(&card->ip_lock, flags);
 768 }
 769
 770 /*
 771  * VIPA related functions
 772  */
 773 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 774               const u8 *addr)
 775 {
 776         struct qeth_ipaddr *ipaddr;
 777         unsigned long flags;
 778         int rc = 0;
 779
 780         ipaddr = qeth_l3_get_addr_buffer(proto);
 781         if (ipaddr) {
 782                 if (proto == QETH_PROT_IPV4) {
 783                         QETH_CARD_TEXT(card, 2, "addvipa4");
 784                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 785                         ipaddr->u.a4.mask = 0;
 786                 } else if (proto == QETH_PROT_IPV6) {
 787                         QETH_CARD_TEXT(card, 2, "addvipa6");
 788                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 789                         ipaddr->u.a6.pfxlen = 0;
 790                 }
 791                 ipaddr->type = QETH_IP_TYPE_VIPA;
 792                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 793                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 794         } else
 795                 return -ENOMEM;
 796         spin_lock_irqsave(&card->ip_lock, flags);
 797         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 798             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 799                 rc = -EEXIST;
 800         spin_unlock_irqrestore(&card->ip_lock, flags);
 801         if (rc) {
 802                 kfree(ipaddr);
 803                 return rc;
 804         }
 805         if (!qeth_l3_add_ip(card, ipaddr))
 806                 kfree(ipaddr);
 807         qeth_l3_set_ip_addr_list(card);
 808         return rc;
 809 }
 810
 811 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 812               const u8 *addr)
 813 {
 814         struct qeth_ipaddr *ipaddr;
 815
 816         ipaddr = qeth_l3_get_addr_buffer(proto);
 817         if (ipaddr) {
 818                 if (proto == QETH_PROT_IPV4) {
 819                         QETH_CARD_TEXT(card, 2, "delvipa4");
 820                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 821                         ipaddr->u.a4.mask = 0;
 822                 } else if (proto == QETH_PROT_IPV6) {
 823                         QETH_CARD_TEXT(card, 2, "delvipa6");
 824                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 825                         ipaddr->u.a6.pfxlen = 0;
 826                 }
 827                 ipaddr->type = QETH_IP_TYPE_VIPA;
 828         } else
 829                 return;
 830         if (!qeth_l3_delete_ip(card, ipaddr))
 831                 kfree(ipaddr);
 832         qeth_l3_set_ip_addr_list(card);
 833 }
 834
 835 /*
 836  * proxy ARP related functions
 837  */
 838 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 839               const u8 *addr)
 840 {
 841         struct qeth_ipaddr *ipaddr;
 842         unsigned long flags;
 843         int rc = 0;
 844
 845         ipaddr = qeth_l3_get_addr_buffer(proto);
 846         if (ipaddr) {
 847                 if (proto == QETH_PROT_IPV4) {
 848                         QETH_CARD_TEXT(card, 2, "addrxip4");
 849                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 850                         ipaddr->u.a4.mask = 0;
 851                 } else if (proto == QETH_PROT_IPV6) {
 852                         QETH_CARD_TEXT(card, 2, "addrxip6");
 853                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 854                         ipaddr->u.a6.pfxlen = 0;
 855                 }
 856                 ipaddr->type = QETH_IP_TYPE_RXIP;
 857                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 858                 ipaddr->del_flags = 0;
 859         } else
 860                 return -ENOMEM;
 861         spin_lock_irqsave(&card->ip_lock, flags);
 862         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 863             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 864                 rc = -EEXIST;
 865         spin_unlock_irqrestore(&card->ip_lock, flags);
 866         if (rc) {
 867                 kfree(ipaddr);
 868                 return rc;
 869         }
 870         if (!qeth_l3_add_ip(card, ipaddr))
 871                 kfree(ipaddr);
 872         qeth_l3_set_ip_addr_list(card);
 873         return 0;
 874 }
 875
 876 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 877                         const u8 *addr)
 878 {
 879         struct qeth_ipaddr *ipaddr;
 880
 881         ipaddr = qeth_l3_get_addr_buffer(proto);
 882         if (ipaddr) {
 883                 if (proto == QETH_PROT_IPV4) {
 884                         QETH_CARD_TEXT(card, 2, "addrxip4");
 885                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 886                         ipaddr->u.a4.mask = 0;
 887                 } else if (proto == QETH_PROT_IPV6) {
 888                         QETH_CARD_TEXT(card, 2, "addrxip6");
 889                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 890                         ipaddr->u.a6.pfxlen = 0;
 891                 }
 892                 ipaddr->type = QETH_IP_TYPE_RXIP;
 893         } else
 894                 return;
 895         if (!qeth_l3_delete_ip(card, ipaddr))
 896                 kfree(ipaddr);
 897         qeth_l3_set_ip_addr_list(card);
 898 }
 899
 900 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 901                                 struct qeth_ipaddr *addr)
 902 {
 903         char buf[50];
 904         int rc = 0;
 905         int cnt = 3;
 906
 907         if (addr->proto == QETH_PROT_IPV4) {
 908                 QETH_CARD_TEXT(card, 2, "setaddr4");
 909                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 910         } else if (addr->proto == QETH_PROT_IPV6) {
 911                 QETH_CARD_TEXT(card, 2, "setaddr6");
 912                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 913                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 914         } else {
 915                 QETH_CARD_TEXT(card, 2, "setaddr?");
 916                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 917         }
 918         do {
 919                 if (addr->is_multicast)
 920                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 921                 else
 922                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 923                                         addr->set_flags);
 924                 if (rc)
 925                         QETH_CARD_TEXT(card, 2, "failed");
 926         } while ((--cnt > 0) && rc);
 927         if (rc) {
 928                 QETH_CARD_TEXT(card, 2, "FAILED");
 929                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 930                 dev_warn(&card->gdev->dev,
 931                         "Registering IP address %s failed\n", buf);
 932         }
 933         return rc;
 934 }
 935
 936 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 937                                                 struct qeth_ipaddr *addr)
 938 {
 939         int rc = 0;
 940
 941         if (addr->proto == QETH_PROT_IPV4) {
 942                 QETH_CARD_TEXT(card, 2, "deladdr4");
 943                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 944         } else if (addr->proto == QETH_PROT_IPV6) {
 945                 QETH_CARD_TEXT(card, 2, "deladdr6");
 946                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 947                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 948         } else {
 949                 QETH_CARD_TEXT(card, 2, "deladdr?");
 950                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 951         }
 952         if (addr->is_multicast)
 953                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 954         else
 955                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 956                                         addr->del_flags);
 957         if (rc)
 958                 QETH_CARD_TEXT(card, 2, "failed");
 959
 960         return rc;
 961 }
 962
 963 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 964 {
 965         if (cast_type == RTN_MULTICAST)
 966                 return QETH_CAST_MULTICAST;
 967         if (cast_type == RTN_BROADCAST)
 968                 return QETH_CAST_BROADCAST;
 969         return QETH_CAST_UNICAST;
 970 }
 971
 972 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 973 {
 974         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 975         if (cast_type == RTN_MULTICAST)
 976                 return ct | QETH_CAST_MULTICAST;
 977         if (cast_type == RTN_ANYCAST)
 978                 return ct | QETH_CAST_ANYCAST;
 979         if (cast_type == RTN_BROADCAST)
 980                 return ct | QETH_CAST_BROADCAST;
 981         return ct | QETH_CAST_UNICAST;
 982 }
 983
 984 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 985 {
 986         int rc;
 987
 988         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 989
 990         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 991                 dev_info(&card->gdev->dev,
 992                         "set adapter parameters not supported.\n");
 993                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 994                 return 0;
 995         }
 996         rc = qeth_query_setadapterparms(card);
 997         if (rc) {
 998                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
 999                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1000                 return rc;
1001         }
1002         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1003                 rc = qeth_setadpparms_change_macaddr(card);
1004                 if (rc)
1005                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1006                                 " address failed\n");
1007         }
1008
1009         return rc;
1010 }
1011
1012 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1013                         struct qeth_reply *reply, unsigned long data)
1014 {
1015         struct qeth_ipa_cmd *cmd;
1016
1017         QETH_CARD_TEXT(card, 4, "defadpcb");
1018
1019         cmd = (struct qeth_ipa_cmd *) data;
1020         if (cmd->hdr.return_code == 0) {
1021                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1022                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1023                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1024                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1025                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1026         }
1027         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1028             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1029                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1030                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1031         }
1032         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1033             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1034                 card->info.tx_csum_mask =
1035                         cmd->data.setassparms.data.flags_32bit;
1036                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1037         }
1038
1039         return 0;
1040 }
1041
1042 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1043         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1044         __u16 len, enum qeth_prot_versions prot)
1045 {
1046         struct qeth_cmd_buffer *iob;
1047         struct qeth_ipa_cmd *cmd;
1048
1049         QETH_CARD_TEXT(card, 4, "getasscm");
1050         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1051
1052         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1053         cmd->data.setassparms.hdr.assist_no = ipa_func;
1054         cmd->data.setassparms.hdr.length = 8 + len;
1055         cmd->data.setassparms.hdr.command_code = cmd_code;
1056         cmd->data.setassparms.hdr.return_code = 0;
1057         cmd->data.setassparms.hdr.seq_no = 0;
1058
1059         return iob;
1060 }
1061
1062 static int qeth_l3_send_setassparms(struct qeth_card *card,
1063         struct qeth_cmd_buffer *iob, __u16 len, long data,
1064         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1065                 unsigned long),
1066         void *reply_param)
1067 {
1068         int rc;
1069         struct qeth_ipa_cmd *cmd;
1070
1071         QETH_CARD_TEXT(card, 4, "sendassp");
1072
1073         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1074         if (len <= sizeof(__u32))
1075                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1076         else   /* (len > sizeof(__u32)) */
1077                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1078
1079         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1080         return rc;
1081 }
1082
1083 #ifdef CONFIG_QETH_IPV6
1084 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1085                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1086 {
1087         int rc;
1088         struct qeth_cmd_buffer *iob;
1089
1090         QETH_CARD_TEXT(card, 4, "simassp6");
1091         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1092                                        0, QETH_PROT_IPV6);
1093         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1094                                    qeth_l3_default_setassparms_cb, NULL);
1095         return rc;
1096 }
1097 #endif
1098
1099 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1100                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1101 {
1102         int rc;
1103         int length = 0;
1104         struct qeth_cmd_buffer *iob;
1105
1106         QETH_CARD_TEXT(card, 4, "simassp4");
1107         if (data)
1108                 length = sizeof(__u32);
1109         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1110                                        length, QETH_PROT_IPV4);
1111         rc = qeth_l3_send_setassparms(card, iob, length, data,
1112                                    qeth_l3_default_setassparms_cb, NULL);
1113         return rc;
1114 }
1115
1116 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1117 {
1118         int rc;
1119
1120         QETH_CARD_TEXT(card, 3, "ipaarp");
1121
1122         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1123                 dev_info(&card->gdev->dev,
1124                         "ARP processing not supported on %s!\n",
1125                         QETH_CARD_IFNAME(card));
1126                 return 0;
1127         }
1128         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1129                                         IPA_CMD_ASS_START, 0);
1130         if (rc) {
1131                 dev_warn(&card->gdev->dev,
1132                         "Starting ARP processing support for %s failed\n",
1133                         QETH_CARD_IFNAME(card));
1134         }
1135         return rc;
1136 }
1137
1138 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1139 {
1140         int rc;
1141
1142         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1143
1144         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1145                 dev_info(&card->gdev->dev,
1146                         "Hardware IP fragmentation not supported on %s\n",
1147                         QETH_CARD_IFNAME(card));
1148                 return  -EOPNOTSUPP;
1149         }
1150
1151         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1152                                           IPA_CMD_ASS_START, 0);
1153         if (rc) {
1154                 dev_warn(&card->gdev->dev,
1155                         "Starting IP fragmentation support for %s failed\n",
1156                         QETH_CARD_IFNAME(card));
1157         } else
1158                 dev_info(&card->gdev->dev,
1159                         "Hardware IP fragmentation enabled \n");
1160         return rc;
1161 }
1162
1163 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1164 {
1165         int rc;
1166
1167         QETH_CARD_TEXT(card, 3, "stsrcmac");
1168
1169         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1170                 dev_info(&card->gdev->dev,
1171                         "Inbound source MAC-address not supported on %s\n",
1172                         QETH_CARD_IFNAME(card));
1173                 return -EOPNOTSUPP;
1174         }
1175
1176         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1177                                           IPA_CMD_ASS_START, 0);
1178         if (rc)
1179                 dev_warn(&card->gdev->dev,
1180                         "Starting source MAC-address support for %s failed\n",
1181                         QETH_CARD_IFNAME(card));
1182         return rc;
1183 }
1184
1185 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1186 {
1187         int rc = 0;
1188
1189         QETH_CARD_TEXT(card, 3, "strtvlan");
1190
1191         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1192                 dev_info(&card->gdev->dev,
1193                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1194                 return -EOPNOTSUPP;
1195         }
1196
1197         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1198                                           IPA_CMD_ASS_START, 0);
1199         if (rc) {
1200                 dev_warn(&card->gdev->dev,
1201                         "Starting VLAN support for %s failed\n",
1202                         QETH_CARD_IFNAME(card));
1203         } else {
1204                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1205         }
1206         return rc;
1207 }
1208
1209 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1210 {
1211         int rc;
1212
1213         QETH_CARD_TEXT(card, 3, "stmcast");
1214
1215         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1216                 dev_info(&card->gdev->dev,
1217                         "Multicast not supported on %s\n",
1218                         QETH_CARD_IFNAME(card));
1219                 return -EOPNOTSUPP;
1220         }
1221
1222         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1223                                           IPA_CMD_ASS_START, 0);
1224         if (rc) {
1225                 dev_warn(&card->gdev->dev,
1226                         "Starting multicast support for %s failed\n",
1227                         QETH_CARD_IFNAME(card));
1228         } else {
1229                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1230                 card->dev->flags |= IFF_MULTICAST;
1231         }
1232         return rc;
1233 }
1234
1235 #ifdef CONFIG_QETH_IPV6
1236 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1237 {
1238         int rc;
1239
1240         QETH_CARD_TEXT(card, 3, "softipv6");
1241
1242         if (card->info.type == QETH_CARD_TYPE_IQD)
1243                 goto out;
1244
1245         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1246         if (rc) {
1247                 dev_err(&card->gdev->dev,
1248                         "Activating IPv6 support for %s failed\n",
1249                         QETH_CARD_IFNAME(card));
1250                 return rc;
1251         }
1252         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1253                                           IPA_CMD_ASS_START, 3);
1254         if (rc) {
1255                 dev_err(&card->gdev->dev,
1256                         "Activating IPv6 support for %s failed\n",
1257                         QETH_CARD_IFNAME(card));
1258                 return rc;
1259         }
1260         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1261                                                IPA_CMD_ASS_START);
1262         if (rc) {
1263                 dev_err(&card->gdev->dev,
1264                         "Activating IPv6 support for %s failed\n",
1265                          QETH_CARD_IFNAME(card));
1266                 return rc;
1267         }
1268         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1269                                                IPA_CMD_ASS_START);
1270         if (rc) {
1271                 dev_warn(&card->gdev->dev,
1272                         "Enabling the passthrough mode for %s failed\n",
1273                         QETH_CARD_IFNAME(card));
1274                 return rc;
1275         }
1276 out:
1277         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1278         return 0;
1279 }
1280 #endif
1281
1282 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1283 {
1284         int rc = 0;
1285
1286         QETH_CARD_TEXT(card, 3, "strtipv6");
1287
1288         if (!qeth_is_supported(card, IPA_IPV6)) {
1289                 dev_info(&card->gdev->dev,
1290                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1291                 return 0;
1292         }
1293 #ifdef CONFIG_QETH_IPV6
1294         rc = qeth_l3_softsetup_ipv6(card);
1295 #endif
1296         return rc ;
1297 }
1298
1299 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1300 {
1301         int rc;
1302
1303         QETH_CARD_TEXT(card, 3, "stbrdcst");
1304         card->info.broadcast_capable = 0;
1305         if (!qeth_is_supported(card, IPA_FILTERING)) {
1306                 dev_info(&card->gdev->dev,
1307                         "Broadcast not supported on %s\n",
1308                         QETH_CARD_IFNAME(card));
1309                 rc = -EOPNOTSUPP;
1310                 goto out;
1311         }
1312         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1313                                           IPA_CMD_ASS_START, 0);
1314         if (rc) {
1315                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1316                         "%s failed\n", QETH_CARD_IFNAME(card));
1317                 goto out;
1318         }
1319
1320         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1321                                           IPA_CMD_ASS_CONFIGURE, 1);
1322         if (rc) {
1323                 dev_warn(&card->gdev->dev,
1324                         "Setting up broadcast filtering for %s failed\n",
1325                         QETH_CARD_IFNAME(card));
1326                 goto out;
1327         }
1328         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1329         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1330         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1331                                           IPA_CMD_ASS_ENABLE, 1);
1332         if (rc) {
1333                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1334                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1335                 goto out;
1336         }
1337         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1338 out:
1339         if (card->info.broadcast_capable)
1340                 card->dev->flags |= IFF_BROADCAST;
1341         else
1342                 card->dev->flags &= ~IFF_BROADCAST;
1343         return rc;
1344 }
1345
1346 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1347 {
1348         int rc;
1349
1350         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1351                                           IPA_CMD_ASS_START, 0);
1352         if (rc) {
1353                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1354                         "failed, using SW checksumming\n",
1355                         QETH_CARD_IFNAME(card));
1356                 return rc;
1357         }
1358         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1359                                           IPA_CMD_ASS_ENABLE,
1360                                           card->info.csum_mask);
1361         if (rc) {
1362                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1363                         "failed, using SW checksumming\n",
1364                         QETH_CARD_IFNAME(card));
1365                 return rc;
1366         }
1367         return 0;
1368 }
1369
1370 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1371 {
1372         int rc = 0;
1373
1374         if (on) {
1375                 rc = qeth_l3_send_checksum_command(card);
1376                 if (rc)
1377                         return -EIO;
1378                 dev_info(&card->gdev->dev,
1379                         "HW Checksumming (inbound) enabled\n");
1380         } else {
1381                 rc = qeth_l3_send_simple_setassparms(card,
1382                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1383                 if (rc)
1384                         return -EIO;
1385         }
1386
1387         return 0;
1388 }
1389
1390 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1391 {
1392         QETH_CARD_TEXT(card, 3, "strtcsum");
1393
1394         if (card->dev->features & NETIF_F_RXCSUM) {
1395                 rtnl_lock();
1396                 /* force set_features call */
1397                 card->dev->features &= ~NETIF_F_RXCSUM;
1398                 netdev_update_features(card->dev);
1399                 rtnl_unlock();
1400         }
1401         return 0;
1402 }
1403
1404 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1405 {
1406         int rc = 0;
1407
1408         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1409                 return rc;
1410         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1411                           IPA_CMD_ASS_START, 0);
1412         if (rc)
1413                 goto err_out;
1414         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1415                           IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1416         if (rc)
1417                 goto err_out;
1418         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1419         return rc;
1420 err_out:
1421         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1422                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1423         return rc;
1424 }
1425
1426 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1427 {
1428         int rc;
1429
1430         QETH_CARD_TEXT(card, 3, "sttso");
1431
1432         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1433                 dev_info(&card->gdev->dev,
1434                         "Outbound TSO not supported on %s\n",
1435                         QETH_CARD_IFNAME(card));
1436                 rc = -EOPNOTSUPP;
1437         } else {
1438                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1439                                                 IPA_CMD_ASS_START, 0);
1440                 if (rc)
1441                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1442                                 "segmentation offload for %s failed\n",
1443                                 QETH_CARD_IFNAME(card));
1444                 else
1445                         dev_info(&card->gdev->dev,
1446                                 "Outbound TSO enabled\n");
1447         }
1448         if (rc)
1449                 card->dev->features &= ~NETIF_F_TSO;
1450         return rc;
1451 }
1452
1453 static int qeth_l3_start_ipassists(struct qeth_card *card)
1454 {
1455         QETH_CARD_TEXT(card, 3, "strtipas");
1456
1457         if (qeth_set_access_ctrl_online(card, 0))
1458                 return -EIO;
1459         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1460         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1461         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1462         qeth_l3_start_ipa_vlan(card);           /* go on*/
1463         qeth_l3_start_ipa_multicast(card);              /* go on*/
1464         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1465         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1466         qeth_l3_start_ipa_checksum(card);               /* go on*/
1467         qeth_l3_start_ipa_tx_checksum(card);
1468         qeth_l3_start_ipa_tso(card);            /* go on*/
1469         return 0;
1470 }
1471
1472 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1473                 struct qeth_reply *reply, unsigned long data)
1474 {
1475         struct qeth_ipa_cmd *cmd;
1476
1477         cmd = (struct qeth_ipa_cmd *) data;
1478         if (cmd->hdr.return_code == 0)
1479                 memcpy(card->dev->dev_addr,
1480                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1481         else
1482                 eth_random_addr(card->dev->dev_addr);
1483
1484         return 0;
1485 }
1486
1487 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1488 {
1489         int rc = 0;
1490         struct qeth_cmd_buffer *iob;
1491         struct qeth_ipa_cmd *cmd;
1492
1493         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1494
1495         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1496                                      QETH_PROT_IPV6);
1497         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1498         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1499                         card->info.unique_id;
1500
1501         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1502                                 NULL);
1503         return rc;
1504 }
1505
1506 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1507                 struct qeth_reply *reply, unsigned long data)
1508 {
1509         struct qeth_ipa_cmd *cmd;
1510
1511         cmd = (struct qeth_ipa_cmd *) data;
1512         if (cmd->hdr.return_code == 0)
1513                 card->info.unique_id = *((__u16 *)
1514                                 &cmd->data.create_destroy_addr.unique_id[6]);
1515         else {
1516                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1517                                         UNIQUE_ID_NOT_BY_CARD;
1518                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1519                         "generate a unique ID\n");
1520         }
1521         return 0;
1522 }
1523
1524 static int qeth_l3_get_unique_id(struct qeth_card *card)
1525 {
1526         int rc = 0;
1527         struct qeth_cmd_buffer *iob;
1528         struct qeth_ipa_cmd *cmd;
1529
1530         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1531
1532         if (!qeth_is_supported(card, IPA_IPV6)) {
1533                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1534                                         UNIQUE_ID_NOT_BY_CARD;
1535                 return 0;
1536         }
1537
1538         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1539                                      QETH_PROT_IPV6);
1540         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1541         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1542                         card->info.unique_id;
1543
1544         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1545         return rc;
1546 }
1547
1548 static int
1549 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1550                             unsigned long data)
1551 {
1552         struct qeth_ipa_cmd        *cmd;
1553         __u16 rc;
1554
1555         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1556
1557         cmd = (struct qeth_ipa_cmd *)data;
1558         rc = cmd->hdr.return_code;
1559         if (rc)
1560                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1561         switch (cmd->data.diagass.action) {
1562         case QETH_DIAGS_CMD_TRACE_QUERY:
1563                 break;
1564         case QETH_DIAGS_CMD_TRACE_DISABLE:
1565                 switch (rc) {
1566                 case 0:
1567                 case IPA_RC_INVALID_SUBCMD:
1568                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1569                         dev_info(&card->gdev->dev, "The HiperSockets network "
1570                                 "traffic analyzer is deactivated\n");
1571                         break;
1572                 default:
1573                         break;
1574                 }
1575                 break;
1576         case QETH_DIAGS_CMD_TRACE_ENABLE:
1577                 switch (rc) {
1578                 case 0:
1579                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1580                         dev_info(&card->gdev->dev, "The HiperSockets network "
1581                                 "traffic analyzer is activated\n");
1582                         break;
1583                 case IPA_RC_HARDWARE_AUTH_ERROR:
1584                         dev_warn(&card->gdev->dev, "The device is not "
1585                                 "authorized to run as a HiperSockets network "
1586                                 "traffic analyzer\n");
1587                         break;
1588                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1589                         dev_warn(&card->gdev->dev, "A HiperSockets "
1590                                 "network traffic analyzer is already "
1591                                 "active in the HiperSockets LAN\n");
1592                         break;
1593                 default:
1594                         break;
1595                 }
1596                 break;
1597         default:
1598                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1599                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1600         }
1601
1602         return 0;
1603 }
1604
1605 static int
1606 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1607 {
1608         struct qeth_cmd_buffer *iob;
1609         struct qeth_ipa_cmd    *cmd;
1610
1611         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1612
1613         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1614         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1615         cmd->data.diagass.subcmd_len = 16;
1616         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1617         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1618         cmd->data.diagass.action = diags_cmd;
1619         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1620 }
1621
1622 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1623                                 struct net_device *dev)
1624 {
1625         ip_eth_mc_map(ipm, mac);
1626 }
1627
1628 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1629 {
1630         struct qeth_ipaddr *ipm;
1631         struct ip_mc_list *im4;
1632         char buf[MAX_ADDR_LEN];
1633
1634         QETH_CARD_TEXT(card, 4, "addmc");
1635         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1636              im4 = rcu_dereference(im4->next_rcu)) {
1637                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1638                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1639                 if (!ipm)
1640                         continue;
1641                 ipm->u.a4.addr = im4->multiaddr;
1642                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1643                 ipm->is_multicast = 1;
1644                 if (!qeth_l3_add_ip(card, ipm))
1645                         kfree(ipm);
1646         }
1647 }
1648
1649 /* called with rcu_read_lock */
1650 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1651 {
1652         struct in_device *in_dev;
1653         u16 vid;
1654
1655         QETH_CARD_TEXT(card, 4, "addmcvl");
1656         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1657                 return;
1658
1659         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1660                 struct net_device *netdev;
1661
1662                 netdev = __vlan_find_dev_deep(card->dev, vid);
1663                 if (netdev == NULL ||
1664                     !(netdev->flags & IFF_UP))
1665                         continue;
1666                 in_dev = __in_dev_get_rcu(netdev);
1667                 if (!in_dev)
1668                         continue;
1669                 qeth_l3_add_mc(card, in_dev);
1670         }
1671 }
1672
1673 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1674 {
1675         struct in_device *in4_dev;
1676
1677         QETH_CARD_TEXT(card, 4, "chkmcv4");
1678         rcu_read_lock();
1679         in4_dev = __in_dev_get_rcu(card->dev);
1680         if (in4_dev == NULL)
1681                 goto unlock;
1682         qeth_l3_add_mc(card, in4_dev);
1683         qeth_l3_add_vlan_mc(card);
1684 unlock:
1685         rcu_read_unlock();
1686 }
1687
1688 #ifdef CONFIG_QETH_IPV6
1689 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1690 {
1691         struct qeth_ipaddr *ipm;
1692         struct ifmcaddr6 *im6;
1693         char buf[MAX_ADDR_LEN];
1694
1695         QETH_CARD_TEXT(card, 4, "addmc6");
1696         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1697                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1698                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1699                 if (!ipm)
1700                         continue;
1701                 ipm->is_multicast = 1;
1702                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1703                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1704                        sizeof(struct in6_addr));
1705                 if (!qeth_l3_add_ip(card, ipm))
1706                         kfree(ipm);
1707         }
1708 }
1709
1710 /* called with rcu_read_lock */
1711 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1712 {
1713         struct inet6_dev *in_dev;
1714         u16 vid;
1715
1716         QETH_CARD_TEXT(card, 4, "admc6vl");
1717         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1718                 return;
1719
1720         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1721                 struct net_device *netdev;
1722
1723                 netdev = __vlan_find_dev_deep(card->dev, vid);
1724                 if (netdev == NULL ||
1725                     !(netdev->flags & IFF_UP))
1726                         continue;
1727                 in_dev = in6_dev_get(netdev);
1728                 if (!in_dev)
1729                         continue;
1730                 read_lock_bh(&in_dev->lock);
1731                 qeth_l3_add_mc6(card, in_dev);
1732                 read_unlock_bh(&in_dev->lock);
1733                 in6_dev_put(in_dev);
1734         }
1735 }
1736
1737 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1738 {
1739         struct inet6_dev *in6_dev;
1740
1741         QETH_CARD_TEXT(card, 4, "chkmcv6");
1742         if (!qeth_is_supported(card, IPA_IPV6))
1743                 return ;
1744         in6_dev = in6_dev_get(card->dev);
1745         if (in6_dev == NULL)
1746                 return;
1747         rcu_read_lock();
1748         read_lock_bh(&in6_dev->lock);
1749         qeth_l3_add_mc6(card, in6_dev);
1750         qeth_l3_add_vlan_mc6(card);
1751         read_unlock_bh(&in6_dev->lock);
1752         rcu_read_unlock();
1753         in6_dev_put(in6_dev);
1754 }
1755 #endif /* CONFIG_QETH_IPV6 */
1756
1757 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1758                         unsigned short vid)
1759 {
1760         struct in_device *in_dev;
1761         struct in_ifaddr *ifa;
1762         struct qeth_ipaddr *addr;
1763         struct net_device *netdev;
1764
1765         QETH_CARD_TEXT(card, 4, "frvaddr4");
1766
1767         netdev = __vlan_find_dev_deep(card->dev, vid);
1768         if (!netdev)
1769                 return;
1770         in_dev = in_dev_get(netdev);
1771         if (!in_dev)
1772                 return;
1773         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1774                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1775                 if (addr) {
1776                         addr->u.a4.addr = ifa->ifa_address;
1777                         addr->u.a4.mask = ifa->ifa_mask;
1778                         addr->type = QETH_IP_TYPE_NORMAL;
1779                         if (!qeth_l3_delete_ip(card, addr))
1780                                 kfree(addr);
1781                 }
1782         }
1783         in_dev_put(in_dev);
1784 }
1785
1786 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1787                         unsigned short vid)
1788 {
1789 #ifdef CONFIG_QETH_IPV6
1790         struct inet6_dev *in6_dev;
1791         struct inet6_ifaddr *ifa;
1792         struct qeth_ipaddr *addr;
1793         struct net_device *netdev;
1794
1795         QETH_CARD_TEXT(card, 4, "frvaddr6");
1796
1797         netdev = __vlan_find_dev_deep(card->dev, vid);
1798         if (!netdev)
1799                 return;
1800         in6_dev = in6_dev_get(netdev);
1801         if (!in6_dev)
1802                 return;
1803         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1804                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1805                 if (addr) {
1806                         memcpy(&addr->u.a6.addr, &ifa->addr,
1807                                sizeof(struct in6_addr));
1808                         addr->u.a6.pfxlen = ifa->prefix_len;
1809                         addr->type = QETH_IP_TYPE_NORMAL;
1810                         if (!qeth_l3_delete_ip(card, addr))
1811                                 kfree(addr);
1812                 }
1813         }
1814         in6_dev_put(in6_dev);
1815 #endif /* CONFIG_QETH_IPV6 */
1816 }
1817
1818 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1819                         unsigned short vid)
1820 {
1821         rcu_read_lock();
1822         qeth_l3_free_vlan_addresses4(card, vid);
1823         qeth_l3_free_vlan_addresses6(card, vid);
1824         rcu_read_unlock();
1825 }
1826
1827 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1828 {
1829         struct qeth_card *card = dev->ml_priv;
1830
1831         set_bit(vid, card->active_vlans);
1832         return 0;
1833 }
1834
1835 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1836 {
1837         struct qeth_card *card = dev->ml_priv;
1838         unsigned long flags;
1839
1840         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1841         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1842                 QETH_CARD_TEXT(card, 3, "kidREC");
1843                 return 0;
1844         }
1845         spin_lock_irqsave(&card->vlanlock, flags);
1846         /* unregister IP addresses of vlan device */
1847         qeth_l3_free_vlan_addresses(card, vid);
1848         clear_bit(vid, card->active_vlans);
1849         spin_unlock_irqrestore(&card->vlanlock, flags);
1850         qeth_l3_set_multicast_list(card->dev);
1851         return 0;
1852 }
1853
1854 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1855                         struct sk_buff *skb, struct qeth_hdr *hdr,
1856                         unsigned short *vlan_id)
1857 {
1858         __be16 prot;
1859         struct iphdr *ip_hdr;
1860         unsigned char tg_addr[MAX_ADDR_LEN];
1861         int is_vlan = 0;
1862
1863         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1864                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1865                               ETH_P_IP);
1866                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1867                 case QETH_CAST_MULTICAST:
1868                         switch (prot) {
1869 #ifdef CONFIG_QETH_IPV6
1870                         case __constant_htons(ETH_P_IPV6):
1871                                 ndisc_mc_map((struct in6_addr *)
1872                                      skb->data + 24,
1873                                      tg_addr, card->dev, 0);
1874                                 break;
1875 #endif
1876                         case __constant_htons(ETH_P_IP):
1877                                 ip_hdr = (struct iphdr *)skb->data;
1878                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1879                                 break;
1880                         default:
1881                                 memcpy(tg_addr, card->dev->broadcast,
1882                                         card->dev->addr_len);
1883                         }
1884                         card->stats.multicast++;
1885                         skb->pkt_type = PACKET_MULTICAST;
1886                         break;
1887                 case QETH_CAST_BROADCAST:
1888                         memcpy(tg_addr, card->dev->broadcast,
1889                                 card->dev->addr_len);
1890                         card->stats.multicast++;
1891                         skb->pkt_type = PACKET_BROADCAST;
1892                         break;
1893                 case QETH_CAST_UNICAST:
1894                 case QETH_CAST_ANYCAST:
1895                 case QETH_CAST_NOCAST:
1896                 default:
1897                         if (card->options.sniffer)
1898                                 skb->pkt_type = PACKET_OTHERHOST;
1899                         else
1900                                 skb->pkt_type = PACKET_HOST;
1901                         memcpy(tg_addr, card->dev->dev_addr,
1902                                 card->dev->addr_len);
1903                 }
1904                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1905                         card->dev->header_ops->create(skb, card->dev, prot,
1906                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1907                                 card->dev->addr_len);
1908                 else
1909                         card->dev->header_ops->create(skb, card->dev, prot,
1910                                 tg_addr, "FAKELL", card->dev->addr_len);
1911         }
1912
1913         skb->protocol = eth_type_trans(skb, card->dev);
1914
1915         if (hdr->hdr.l3.ext_flags &
1916             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1917                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1918                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1919                 is_vlan = 1;
1920         }
1921
1922         if (card->dev->features & NETIF_F_RXCSUM) {
1923                 if ((hdr->hdr.l3.ext_flags &
1924                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1925                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1926                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1927                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1928                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1929                 else
1930                         skb->ip_summed = CHECKSUM_NONE;
1931         } else
1932                 skb->ip_summed = CHECKSUM_NONE;
1933
1934         return is_vlan;
1935 }
1936
1937 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1938                                 int budget, int *done)
1939 {
1940         int work_done = 0;
1941         struct sk_buff *skb;
1942         struct qeth_hdr *hdr;
1943         __u16 vlan_tag = 0;
1944         int is_vlan;
1945         unsigned int len;
1946         __u16 magic;
1947
1948         *done = 0;
1949         WARN_ON_ONCE(!budget);
1950         while (budget) {
1951                 skb = qeth_core_get_next_skb(card,
1952                         &card->qdio.in_q->bufs[card->rx.b_index],
1953                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1954                 if (!skb) {
1955                         *done = 1;
1956                         break;
1957                 }
1958                 skb->dev = card->dev;
1959                 switch (hdr->hdr.l3.id) {
1960                 case QETH_HEADER_TYPE_LAYER3:
1961                         magic = *(__u16 *)skb->data;
1962                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1963                             (magic == ETH_P_AF_IUCV)) {
1964                                 skb->protocol = ETH_P_AF_IUCV;
1965                                 skb->pkt_type = PACKET_HOST;
1966                                 skb->mac_header = NET_SKB_PAD;
1967                                 skb->dev = card->dev;
1968                                 len = skb->len;
1969                                 card->dev->header_ops->create(skb, card->dev, 0,
1970                                         card->dev->dev_addr, "FAKELL",
1971                                         card->dev->addr_len);
1972                                 netif_receive_skb(skb);
1973                         } else {
1974                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1975                                                       &vlan_tag);
1976                                 len = skb->len;
1977                                 if (is_vlan && !card->options.sniffer)
1978                                         __vlan_hwaccel_put_tag(skb, vlan_tag);
1979                                 napi_gro_receive(&card->napi, skb);
1980                         }
1981                         break;
1982                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1983                         skb->pkt_type = PACKET_HOST;
1984                         skb->protocol = eth_type_trans(skb, skb->dev);
1985                         len = skb->len;
1986                         netif_receive_skb(skb);
1987                         break;
1988                 default:
1989                         dev_kfree_skb_any(skb);
1990                         QETH_CARD_TEXT(card, 3, "inbunkno");
1991                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1992                         continue;
1993                 }
1994                 work_done++;
1995                 budget--;
1996                 card->stats.rx_packets++;
1997                 card->stats.rx_bytes += len;
1998         }
1999         return work_done;
2000 }
2001
2002 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2003 {
2004         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2005         int work_done = 0;
2006         struct qeth_qdio_buffer *buffer;
2007         int done;
2008         int new_budget = budget;
2009
2010         if (card->options.performance_stats) {
2011                 card->perf_stats.inbound_cnt++;
2012                 card->perf_stats.inbound_start_time = qeth_get_micros();
2013         }
2014
2015         while (1) {
2016                 if (!card->rx.b_count) {
2017                         card->rx.qdio_err = 0;
2018                         card->rx.b_count = qdio_get_next_buffers(
2019                                 card->data.ccwdev, 0, &card->rx.b_index,
2020                                 &card->rx.qdio_err);
2021                         if (card->rx.b_count <= 0) {
2022                                 card->rx.b_count = 0;
2023                                 break;
2024                         }
2025                         card->rx.b_element =
2026                                 &card->qdio.in_q->bufs[card->rx.b_index]
2027                                 .buffer->element[0];
2028                         card->rx.e_offset = 0;
2029                 }
2030
2031                 while (card->rx.b_count) {
2032                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2033                         if (!(card->rx.qdio_err &&
2034                             qeth_check_qdio_errors(card, buffer->buffer,
2035                             card->rx.qdio_err, "qinerr")))
2036                                 work_done += qeth_l3_process_inbound_buffer(
2037                                         card, new_budget, &done);
2038                         else
2039                                 done = 1;
2040
2041                         if (done) {
2042                                 if (card->options.performance_stats)
2043                                         card->perf_stats.bufs_rec++;
2044                                 qeth_put_buffer_pool_entry(card,
2045                                         buffer->pool_entry);
2046                                 qeth_queue_input_buffer(card, card->rx.b_index);
2047                                 card->rx.b_count--;
2048                                 if (card->rx.b_count) {
2049                                         card->rx.b_index =
2050                                                 (card->rx.b_index + 1) %
2051                                                 QDIO_MAX_BUFFERS_PER_Q;
2052                                         card->rx.b_element =
2053                                                 &card->qdio.in_q
2054                                                 ->bufs[card->rx.b_index]
2055                                                 .buffer->element[0];
2056                                         card->rx.e_offset = 0;
2057                                 }
2058                         }
2059
2060                         if (work_done >= budget)
2061                                 goto out;
2062                         else
2063                                 new_budget = budget - work_done;
2064                 }
2065         }
2066
2067         napi_complete(napi);
2068         if (qdio_start_irq(card->data.ccwdev, 0))
2069                 napi_schedule(&card->napi);
2070 out:
2071         if (card->options.performance_stats)
2072                 card->perf_stats.inbound_time += qeth_get_micros() -
2073                         card->perf_stats.inbound_start_time;
2074         return work_done;
2075 }
2076
2077 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2078                         struct qeth_card *card)
2079 {
2080         int rc = 0;
2081         u16 vid;
2082
2083         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2084                 struct net_device *netdev;
2085
2086                 rcu_read_lock();
2087                 netdev = __vlan_find_dev_deep(card->dev, vid);
2088                 rcu_read_unlock();
2089                 if (netdev == dev) {
2090                         rc = QETH_VLAN_CARD;
2091                         break;
2092                 }
2093         }
2094
2095         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2096                 return 0;
2097
2098         return rc;
2099 }
2100
2101 static int qeth_l3_verify_dev(struct net_device *dev)
2102 {
2103         struct qeth_card *card;
2104         unsigned long flags;
2105         int rc = 0;
2106
2107         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2108         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2109                 if (card->dev == dev) {
2110                         rc = QETH_REAL_CARD;
2111                         break;
2112                 }
2113                 rc = qeth_l3_verify_vlan_dev(dev, card);
2114                 if (rc)
2115                         break;
2116         }
2117         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2118
2119         return rc;
2120 }
2121
2122 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2123 {
2124         struct qeth_card *card = NULL;
2125         int rc;
2126
2127         rc = qeth_l3_verify_dev(dev);
2128         if (rc == QETH_REAL_CARD)
2129                 card = dev->ml_priv;
2130         else if (rc == QETH_VLAN_CARD)
2131                 card = vlan_dev_real_dev(dev)->ml_priv;
2132         if (card && card->options.layer2)
2133                 card = NULL;
2134         if (card)
2135                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2136         return card ;
2137 }
2138
2139 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2140 {
2141         int rc = 0;
2142
2143         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2144         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2145
2146         qeth_set_allowed_threads(card, 0, 1);
2147         if (card->options.sniffer &&
2148             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2149                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2150         if (card->read.state == CH_STATE_UP &&
2151             card->write.state == CH_STATE_UP &&
2152             (card->state == CARD_STATE_UP)) {
2153                 if (recovery_mode)
2154                         qeth_l3_stop(card->dev);
2155                 else {
2156                         rtnl_lock();
2157                         dev_close(card->dev);
2158                         rtnl_unlock();
2159                 }
2160                 card->state = CARD_STATE_SOFTSETUP;
2161         }
2162         if (card->state == CARD_STATE_SOFTSETUP) {
2163                 qeth_l3_clear_ip_list(card, 1);
2164                 qeth_clear_ipacmd_list(card);
2165                 card->state = CARD_STATE_HARDSETUP;
2166         }
2167         if (card->state == CARD_STATE_HARDSETUP) {
2168                 qeth_qdio_clear_card(card, 0);
2169                 qeth_clear_qdio_buffers(card);
2170                 qeth_clear_working_pool_list(card);
2171                 card->state = CARD_STATE_DOWN;
2172         }
2173         if (card->state == CARD_STATE_DOWN) {
2174                 qeth_clear_cmd_buffers(&card->read);
2175                 qeth_clear_cmd_buffers(&card->write);
2176         }
2177         return rc;
2178 }
2179
2180 /*
2181  * test for and Switch promiscuous mode (on or off)
2182  *  either for guestlan or HiperSocket Sniffer
2183  */
2184 static void
2185 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2186 {
2187         struct net_device *dev = card->dev;
2188
2189         if (((dev->flags & IFF_PROMISC) &&
2190              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2191             (!(dev->flags & IFF_PROMISC) &&
2192              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2193                 return;
2194
2195         if (card->info.guestlan) {              /* Guestlan trace */
2196                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2197                         qeth_setadp_promisc_mode(card);
2198         } else if (card->options.sniffer &&     /* HiperSockets trace */
2199                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2200                 if (dev->flags & IFF_PROMISC) {
2201                         QETH_CARD_TEXT(card, 3, "+promisc");
2202                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2203                 } else {
2204                         QETH_CARD_TEXT(card, 3, "-promisc");
2205                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2206                 }
2207         }
2208 }
2209
2210 static void qeth_l3_set_multicast_list(struct net_device *dev)
2211 {
2212         struct qeth_card *card = dev->ml_priv;
2213
2214         QETH_CARD_TEXT(card, 3, "setmulti");
2215         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2216             (card->state != CARD_STATE_UP))
2217                 return;
2218         if (!card->options.sniffer) {
2219                 qeth_l3_delete_mc_addresses(card);
2220                 qeth_l3_add_multicast_ipv4(card);
2221 #ifdef CONFIG_QETH_IPV6
2222                 qeth_l3_add_multicast_ipv6(card);
2223 #endif
2224                 qeth_l3_set_ip_addr_list(card);
2225                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2226                         return;
2227         }
2228         qeth_l3_handle_promisc_mode(card);
2229 }
2230
2231 static const char *qeth_l3_arp_get_error_cause(int *rc)
2232 {
2233         switch (*rc) {
2234         case QETH_IPA_ARP_RC_FAILED:
2235                 *rc = -EIO;
2236                 return "operation failed";
2237         case QETH_IPA_ARP_RC_NOTSUPP:
2238                 *rc = -EOPNOTSUPP;
2239                 return "operation not supported";
2240         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2241                 *rc = -EINVAL;
2242                 return "argument out of range";
2243         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2244                 *rc = -EOPNOTSUPP;
2245                 return "query operation not supported";
2246         case QETH_IPA_ARP_RC_Q_NO_DATA:
2247                 *rc = -ENOENT;
2248                 return "no query data available";
2249         default:
2250                 return "unknown error";
2251         }
2252 }
2253
2254 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2255 {
2256         int tmp;
2257         int rc;
2258
2259         QETH_CARD_TEXT(card, 3, "arpstnoe");
2260
2261         /*
2262          * currently GuestLAN only supports the ARP assist function
2263          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2264          * thus we say EOPNOTSUPP for this ARP function
2265          */
2266         if (card->info.guestlan)
2267                 return -EOPNOTSUPP;
2268         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2269                 return -EOPNOTSUPP;
2270         }
2271         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2272                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2273                                           no_entries);
2274         if (rc) {
2275                 tmp = rc;
2276                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2277                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2278                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2279         }
2280         return rc;
2281 }
2282
2283 static __u32 get_arp_entry_size(struct qeth_card *card,
2284                         struct qeth_arp_query_data *qdata,
2285                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2286 {
2287         __u32 rc;
2288         __u8 is_hsi;
2289
2290         is_hsi = qdata->reply_bits == 5;
2291         if (type->ip == QETHARP_IP_ADDR_V4) {
2292                 QETH_CARD_TEXT(card, 4, "arpev4");
2293                 if (strip_entries) {
2294                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2295                                 sizeof(struct qeth_arp_qi_entry7_short);
2296                 } else {
2297                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2298                                 sizeof(struct qeth_arp_qi_entry7);
2299                 }
2300         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2301                 QETH_CARD_TEXT(card, 4, "arpev6");
2302                 if (strip_entries) {
2303                         rc = is_hsi ?
2304                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2305                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2306                 } else {
2307                         rc = is_hsi ?
2308                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2309                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2310                 }
2311         } else {
2312                 QETH_CARD_TEXT(card, 4, "arpinv");
2313                 rc = 0;
2314         }
2315
2316         return rc;
2317 }
2318
2319 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2320 {
2321         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2322                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2323 }
2324
2325 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2326                 struct qeth_reply *reply, unsigned long data)
2327 {
2328         struct qeth_ipa_cmd *cmd;
2329         struct qeth_arp_query_data *qdata;
2330         struct qeth_arp_query_info *qinfo;
2331         int i;
2332         int e;
2333         int entrybytes_done;
2334         int stripped_bytes;
2335         __u8 do_strip_entries;
2336
2337         QETH_CARD_TEXT(card, 3, "arpquecb");
2338
2339         qinfo = (struct qeth_arp_query_info *) reply->param;
2340         cmd = (struct qeth_ipa_cmd *) data;
2341         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2342         if (cmd->hdr.return_code) {
2343                 QETH_CARD_TEXT(card, 4, "arpcberr");
2344                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2345                 return 0;
2346         }
2347         if (cmd->data.setassparms.hdr.return_code) {
2348                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2349                 QETH_CARD_TEXT(card, 4, "setaperr");
2350                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2351                 return 0;
2352         }
2353         qdata = &cmd->data.setassparms.data.query_arp;
2354         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2355
2356         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2357         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2358         entrybytes_done = 0;
2359         for (e = 0; e < qdata->no_entries; ++e) {
2360                 char *cur_entry;
2361                 __u32 esize;
2362                 struct qeth_arp_entrytype *etype;
2363
2364                 cur_entry = &qdata->data + entrybytes_done;
2365                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2366                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2367                         QETH_CARD_TEXT(card, 4, "pmis");
2368                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2369                         break;
2370                 }
2371                 esize = get_arp_entry_size(card, qdata, etype,
2372                         do_strip_entries);
2373                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2374                 if (!esize)
2375                         break;
2376
2377                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2378                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2379                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2380                         goto out_error;
2381                 }
2382
2383                 memcpy(qinfo->udata + qinfo->udata_offset,
2384                         &qdata->data + entrybytes_done + stripped_bytes,
2385                         esize);
2386                 entrybytes_done += esize + stripped_bytes;
2387                 qinfo->udata_offset += esize;
2388                 ++qinfo->no_entries;
2389         }
2390         /* check if all replies received ... */
2391         if (cmd->data.setassparms.hdr.seq_no <
2392             cmd->data.setassparms.hdr.number_of_replies)
2393                 return 1;
2394         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2395         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2396         /* keep STRIP_ENTRIES flag so the user program can distinguish
2397          * stripped entries from normal ones */
2398         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2399                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2400         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2401         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2402         return 0;
2403 out_error:
2404         i = 0;
2405         memcpy(qinfo->udata, &i, 4);
2406         return 0;
2407 }
2408
2409 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2410                 struct qeth_cmd_buffer *iob, int len,
2411                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2412                         unsigned long),
2413                 void *reply_param)
2414 {
2415         QETH_CARD_TEXT(card, 4, "sendarp");
2416
2417         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2418         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2419                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2420         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2421                                       reply_cb, reply_param);
2422 }
2423
2424 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2425         enum qeth_prot_versions prot,
2426         struct qeth_arp_query_info *qinfo)
2427 {
2428         struct qeth_cmd_buffer *iob;
2429         struct qeth_ipa_cmd *cmd;
2430         int tmp;
2431         int rc;
2432
2433         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2434
2435         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2436                         IPA_CMD_ASS_ARP_QUERY_INFO,
2437                         sizeof(struct qeth_arp_query_data) - sizeof(char),
2438                         prot);
2439         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2440         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2441         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2442         cmd->data.setassparms.data.query_arp.no_entries = 0;
2443         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2444                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2445                            qeth_l3_arp_query_cb, (void *)qinfo);
2446         if (rc) {
2447                 tmp = rc;
2448                 QETH_DBF_MESSAGE(2,
2449                         "Error while querying ARP cache on %s: %s "
2450                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2451                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2452         }
2453
2454         return rc;
2455 }
2456
2457 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2458 {
2459         struct qeth_arp_query_info qinfo = {0, };
2460         int rc;
2461
2462         QETH_CARD_TEXT(card, 3, "arpquery");
2463
2464         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2465                                IPA_ARP_PROCESSING)) {
2466                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2467                 rc = -EOPNOTSUPP;
2468                 goto out;
2469         }
2470         /* get size of userspace buffer and mask_bits -> 6 bytes */
2471         if (copy_from_user(&qinfo, udata, 6)) {
2472                 rc = -EFAULT;
2473                 goto out;
2474         }
2475         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2476         if (!qinfo.udata) {
2477                 rc = -ENOMEM;
2478                 goto out;
2479         }
2480         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2481         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2482         if (rc) {
2483                 if (copy_to_user(udata, qinfo.udata, 4))
2484                         rc = -EFAULT;
2485                         goto free_and_out;
2486         } else {
2487 #ifdef CONFIG_QETH_IPV6
2488                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2489                         /* fails in case of GuestLAN QDIO mode */
2490                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2491                                 &qinfo);
2492                 }
2493 #endif
2494                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2495                         QETH_CARD_TEXT(card, 4, "qactf");
2496                         rc = -EFAULT;
2497                         goto free_and_out;
2498                 }
2499                 QETH_CARD_TEXT_(card, 4, "qacts");
2500         }
2501 free_and_out:
2502         kfree(qinfo.udata);
2503 out:
2504         return rc;
2505 }
2506
2507 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2508                                 struct qeth_arp_cache_entry *entry)
2509 {
2510         struct qeth_cmd_buffer *iob;
2511         char buf[16];
2512         int tmp;
2513         int rc;
2514
2515         QETH_CARD_TEXT(card, 3, "arpadent");
2516
2517         /*
2518          * currently GuestLAN only supports the ARP assist function
2519          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2520          * thus we say EOPNOTSUPP for this ARP function
2521          */
2522         if (card->info.guestlan)
2523                 return -EOPNOTSUPP;
2524         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2525                 return -EOPNOTSUPP;
2526         }
2527
2528         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2529                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2530                                        sizeof(struct qeth_arp_cache_entry),
2531                                        QETH_PROT_IPV4);
2532         rc = qeth_l3_send_setassparms(card, iob,
2533                                    sizeof(struct qeth_arp_cache_entry),
2534                                    (unsigned long) entry,
2535                                    qeth_l3_default_setassparms_cb, NULL);
2536         if (rc) {
2537                 tmp = rc;
2538                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2539                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2540                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2541                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2542         }
2543         return rc;
2544 }
2545
2546 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2547                                 struct qeth_arp_cache_entry *entry)
2548 {
2549         struct qeth_cmd_buffer *iob;
2550         char buf[16] = {0, };
2551         int tmp;
2552         int rc;
2553
2554         QETH_CARD_TEXT(card, 3, "arprment");
2555
2556         /*
2557          * currently GuestLAN only supports the ARP assist function
2558          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2559          * thus we say EOPNOTSUPP for this ARP function
2560          */
2561         if (card->info.guestlan)
2562                 return -EOPNOTSUPP;
2563         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2564                 return -EOPNOTSUPP;
2565         }
2566         memcpy(buf, entry, 12);
2567         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2568                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2569                                        12,
2570                                        QETH_PROT_IPV4);
2571         rc = qeth_l3_send_setassparms(card, iob,
2572                                    12, (unsigned long)buf,
2573                                    qeth_l3_default_setassparms_cb, NULL);
2574         if (rc) {
2575                 tmp = rc;
2576                 memset(buf, 0, 16);
2577                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2578                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2579                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2580                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2581         }
2582         return rc;
2583 }
2584
2585 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2586 {
2587         int rc;
2588         int tmp;
2589
2590         QETH_CARD_TEXT(card, 3, "arpflush");
2591
2592         /*
2593          * currently GuestLAN only supports the ARP assist function
2594          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2595          * thus we say EOPNOTSUPP for this ARP function
2596         */
2597         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2598                 return -EOPNOTSUPP;
2599         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2600                 return -EOPNOTSUPP;
2601         }
2602         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2603                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2604         if (rc) {
2605                 tmp = rc;
2606                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2607                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2608                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2609         }
2610         return rc;
2611 }
2612
2613 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2614 {
2615         struct qeth_card *card = dev->ml_priv;
2616         struct qeth_arp_cache_entry arp_entry;
2617         struct mii_ioctl_data *mii_data;
2618         int rc = 0;
2619
2620         if (!card)
2621                 return -ENODEV;
2622
2623         if ((card->state != CARD_STATE_UP) &&
2624                 (card->state != CARD_STATE_SOFTSETUP))
2625                 return -ENODEV;
2626
2627         switch (cmd) {
2628         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2629                 if (!capable(CAP_NET_ADMIN)) {
2630                         rc = -EPERM;
2631                         break;
2632                 }
2633                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2634                 break;
2635         case SIOC_QETH_ARP_QUERY_INFO:
2636                 if (!capable(CAP_NET_ADMIN)) {
2637                         rc = -EPERM;
2638                         break;
2639                 }
2640                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2641                 break;
2642         case SIOC_QETH_ARP_ADD_ENTRY:
2643                 if (!capable(CAP_NET_ADMIN)) {
2644                         rc = -EPERM;
2645                         break;
2646                 }
2647                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2648                                    sizeof(struct qeth_arp_cache_entry)))
2649                         rc = -EFAULT;
2650                 else
2651                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2652                 break;
2653         case SIOC_QETH_ARP_REMOVE_ENTRY:
2654                 if (!capable(CAP_NET_ADMIN)) {
2655                         rc = -EPERM;
2656                         break;
2657                 }
2658                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2659                                    sizeof(struct qeth_arp_cache_entry)))
2660                         rc = -EFAULT;
2661                 else
2662                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2663                 break;
2664         case SIOC_QETH_ARP_FLUSH_CACHE:
2665                 if (!capable(CAP_NET_ADMIN)) {
2666                         rc = -EPERM;
2667                         break;
2668                 }
2669                 rc = qeth_l3_arp_flush_cache(card);
2670                 break;
2671         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2672                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2673                 break;
2674         case SIOC_QETH_GET_CARD_TYPE:
2675                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2676                      card->info.type == QETH_CARD_TYPE_OSX) &&
2677                     !card->info.guestlan)
2678                         return 1;
2679                 return 0;
2680                 break;
2681         case SIOCGMIIPHY:
2682                 mii_data = if_mii(rq);
2683                 mii_data->phy_id = 0;
2684                 break;
2685         case SIOCGMIIREG:
2686                 mii_data = if_mii(rq);
2687                 if (mii_data->phy_id != 0)
2688                         rc = -EINVAL;
2689                 else
2690                         mii_data->val_out = qeth_mdio_read(dev,
2691                                                         mii_data->phy_id,
2692                                                         mii_data->reg_num);
2693                 break;
2694         case SIOC_QETH_QUERY_OAT:
2695                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2696                 break;
2697         default:
2698                 rc = -EOPNOTSUPP;
2699         }
2700         if (rc)
2701                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2702         return rc;
2703 }
2704
2705 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2706 {
2707         int cast_type = RTN_UNSPEC;
2708         struct neighbour *n = NULL;
2709         struct dst_entry *dst;
2710
2711         rcu_read_lock();
2712         dst = skb_dst(skb);
2713         if (dst)
2714                 n = dst_neigh_lookup_skb(dst, skb);
2715         if (n) {
2716                 cast_type = n->type;
2717                 rcu_read_unlock();
2718                 neigh_release(n);
2719                 if ((cast_type == RTN_BROADCAST) ||
2720                     (cast_type == RTN_MULTICAST) ||
2721                     (cast_type == RTN_ANYCAST))
2722                         return cast_type;
2723                 else
2724                         return RTN_UNSPEC;
2725         }
2726         rcu_read_unlock();
2727
2728         /* try something else */
2729         if (skb->protocol == ETH_P_IPV6)
2730                 return (skb_network_header(skb)[24] == 0xff) ?
2731                                 RTN_MULTICAST : 0;
2732         else if (skb->protocol == ETH_P_IP)
2733                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2734                                 RTN_MULTICAST : 0;
2735         /* ... */
2736         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2737                 return RTN_BROADCAST;
2738         else {
2739                 u16 hdr_mac;
2740
2741                 hdr_mac = *((u16 *)skb->data);
2742                 /* tr multicast? */
2743                 switch (card->info.link_type) {
2744                 case QETH_LINK_TYPE_HSTR:
2745                 case QETH_LINK_TYPE_LANE_TR:
2746                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2747                             (hdr_mac == QETH_TR_MAC_C))
2748                                 return RTN_MULTICAST;
2749                         break;
2750                 /* eth or so multicast? */
2751                 default:
2752                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2753                             (hdr_mac == QETH_ETH_MAC_V6))
2754                                 return RTN_MULTICAST;
2755                 }
2756         }
2757         return cast_type;
2758 }
2759
2760 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2761                 struct qeth_hdr *hdr, struct sk_buff *skb)
2762 {
2763         char daddr[16];
2764         struct af_iucv_trans_hdr *iucv_hdr;
2765
2766         skb_pull(skb, 14);
2767         card->dev->header_ops->create(skb, card->dev, 0,
2768                                       card->dev->dev_addr, card->dev->dev_addr,
2769                                       card->dev->addr_len);
2770         skb_pull(skb, 14);
2771         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2772         memset(hdr, 0, sizeof(struct qeth_hdr));
2773         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2774         hdr->hdr.l3.ext_flags = 0;
2775         hdr->hdr.l3.length = skb->len;
2776         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2777         memset(daddr, 0, sizeof(daddr));
2778         daddr[0] = 0xfe;
2779         daddr[1] = 0x80;
2780         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2781         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2782 }
2783
2784 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2785                 struct sk_buff *skb, int ipv, int cast_type)
2786 {
2787         struct dst_entry *dst;
2788
2789         memset(hdr, 0, sizeof(struct qeth_hdr));
2790         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2791         hdr->hdr.l3.ext_flags = 0;
2792
2793         /*
2794          * before we're going to overwrite this location with next hop ip.
2795          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2796          */
2797         if (vlan_tx_tag_present(skb)) {
2798                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2799                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2800                 else
2801                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2802                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2803         }
2804
2805         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2806
2807         rcu_read_lock();
2808         dst = skb_dst(skb);
2809         if (ipv == 4) {
2810                 struct rtable *rt = (struct rtable *) dst;
2811                 __be32 *pkey = &ip_hdr(skb)->daddr;
2812
2813                 if (rt->rt_gateway)
2814                         pkey = &rt->rt_gateway;
2815
2816                 /* IPv4 */
2817                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2818                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2819                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2820         } else if (ipv == 6) {
2821                 struct rt6_info *rt = (struct rt6_info *) dst;
2822                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2823
2824                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2825                         pkey = &rt->rt6i_gateway;
2826
2827                 /* IPv6 */
2828                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2829                 if (card->info.type == QETH_CARD_TYPE_IQD)
2830                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2831                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2832         } else {
2833                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2834                             skb->dev->broadcast, 6)) {
2835                         /* broadcast? */
2836                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2837                                                 QETH_HDR_PASSTHRU;
2838                 } else {
2839                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2840                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2841                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2842                 }
2843         }
2844         rcu_read_unlock();
2845 }
2846
2847 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2848                 struct qeth_hdr *hdr, struct sk_buff *skb)
2849 {
2850         struct iphdr *iph = ip_hdr(skb);
2851
2852         /* tcph->check contains already the pseudo hdr checksum
2853          * so just set the header flags
2854          */
2855         if (iph->protocol == IPPROTO_UDP)
2856                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2857         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2858                 QETH_HDR_EXT_CSUM_HDR_REQ;
2859         iph->check = 0;
2860         if (card->options.performance_stats)
2861                 card->perf_stats.tx_csum++;
2862 }
2863
2864 static void qeth_tso_fill_header(struct qeth_card *card,
2865                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2866 {
2867         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2868         struct tcphdr *tcph = tcp_hdr(skb);
2869         struct iphdr *iph = ip_hdr(skb);
2870         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2871
2872         /*fix header to TSO values ...*/
2873         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2874         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2875         /*set values which are fix for the first approach ...*/
2876         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2877         hdr->ext.imb_hdr_no  = 1;
2878         hdr->ext.hdr_type    = 1;
2879         hdr->ext.hdr_version = 1;
2880         hdr->ext.hdr_len     = 28;
2881         /*insert non-fix values */
2882         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2883         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2884         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2885                                        sizeof(struct qeth_hdr_tso));
2886         tcph->check = 0;
2887         if (skb->protocol == ETH_P_IPV6) {
2888                 ip6h->payload_len = 0;
2889                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2890                                                0, IPPROTO_TCP, 0);
2891         } else {
2892                 /*OSA want us to set these values ...*/
2893                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2894                                          0, IPPROTO_TCP, 0);
2895                 iph->tot_len = 0;
2896                 iph->check = 0;
2897         }
2898 }
2899
2900 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2901 {
2902         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2903                 tcp_hdr(skb)->doff * 4;
2904         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2905         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2906         elements += skb_shinfo(skb)->nr_frags;
2907         return elements;
2908 }
2909
2910 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2911 {
2912         int rc;
2913         u16 *tag;
2914         struct qeth_hdr *hdr = NULL;
2915         int elements_needed = 0;
2916         int elems;
2917         struct qeth_card *card = dev->ml_priv;
2918         struct sk_buff *new_skb = NULL;
2919         int ipv = qeth_get_ip_version(skb);
2920         int cast_type = qeth_l3_get_cast_type(card, skb);
2921         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2922                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2923         int tx_bytes = skb->len;
2924         bool large_send;
2925         int data_offset = -1;
2926         int nr_frags;
2927
2928         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2929              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2930               ((card->options.cq == QETH_CQ_ENABLED) &&
2931                (skb->protocol != ETH_P_AF_IUCV)))) ||
2932             card->options.sniffer)
2933                         goto tx_drop;
2934
2935         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2936                 card->stats.tx_carrier_errors++;
2937                 goto tx_drop;
2938         }
2939
2940         if ((cast_type == RTN_BROADCAST) &&
2941             (card->info.broadcast_capable == 0))
2942                 goto tx_drop;
2943
2944         if (card->options.performance_stats) {
2945                 card->perf_stats.outbound_cnt++;
2946                 card->perf_stats.outbound_start_time = qeth_get_micros();
2947         }
2948
2949         large_send = skb_is_gso(skb);
2950
2951         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2952             (skb_shinfo(skb)->nr_frags == 0)) {
2953                 new_skb = skb;
2954                 if (new_skb->protocol == ETH_P_AF_IUCV)
2955                         data_offset = 0;
2956                 else
2957                         data_offset = ETH_HLEN;
2958                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2959                 if (!hdr)
2960                         goto tx_drop;
2961                 elements_needed++;
2962         } else {
2963                 /* create a clone with writeable headroom */
2964                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2965                                         + VLAN_HLEN);
2966                 if (!new_skb)
2967                         goto tx_drop;
2968         }
2969
2970         if (card->info.type == QETH_CARD_TYPE_IQD) {
2971                 if (data_offset < 0)
2972                         skb_pull(new_skb, ETH_HLEN);
2973         } else {
2974                 if (ipv == 4) {
2975                         skb_pull(new_skb, ETH_HLEN);
2976                 }
2977
2978                 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
2979                         skb_push(new_skb, VLAN_HLEN);
2980                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2981                         skb_copy_to_linear_data_offset(new_skb, 4,
2982                                 new_skb->data + 8, 4);
2983                         skb_copy_to_linear_data_offset(new_skb, 8,
2984                                 new_skb->data + 12, 4);
2985                         tag = (u16 *)(new_skb->data + 12);
2986                         *tag = __constant_htons(ETH_P_8021Q);
2987                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2988                 }
2989         }
2990
2991         netif_stop_queue(dev);
2992
2993         /* fix hardware limitation: as long as we do not have sbal
2994          * chaining we can not send long frag lists
2995          */
2996         if (large_send) {
2997                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2998                         if (skb_linearize(new_skb))
2999                                 goto tx_drop;
3000                         if (card->options.performance_stats)
3001                                 card->perf_stats.tx_lin++;
3002                 }
3003         }
3004
3005         if (large_send && (cast_type == RTN_UNSPEC)) {
3006                 hdr = (struct qeth_hdr *)skb_push(new_skb,
3007                                                 sizeof(struct qeth_hdr_tso));
3008                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3009                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3010                 qeth_tso_fill_header(card, hdr, new_skb);
3011                 elements_needed++;
3012         } else {
3013                 if (data_offset < 0) {
3014                         hdr = (struct qeth_hdr *)skb_push(new_skb,
3015                                                 sizeof(struct qeth_hdr));
3016                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3017                                                 cast_type);
3018                 } else {
3019                         if (new_skb->protocol == ETH_P_AF_IUCV)
3020                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3021                         else {
3022                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3023                                                         cast_type);
3024                                 hdr->hdr.l3.length = new_skb->len - data_offset;
3025                         }
3026                 }
3027
3028                 if (skb->ip_summed == CHECKSUM_PARTIAL)
3029                         qeth_l3_hdr_csum(card, hdr, new_skb);
3030         }
3031
3032         elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3033                                                  elements_needed);
3034         if (!elems) {
3035                 if (data_offset >= 0)
3036                         kmem_cache_free(qeth_core_header_cache, hdr);
3037                 goto tx_drop;
3038         }
3039         elements_needed += elems;
3040         nr_frags = skb_shinfo(new_skb)->nr_frags;
3041
3042         if (card->info.type != QETH_CARD_TYPE_IQD) {
3043                 int len;
3044                 if (large_send)
3045                         len = ((unsigned long)tcp_hdr(new_skb) +
3046                                 tcp_hdr(new_skb)->doff * 4) -
3047                                 (unsigned long)new_skb->data;
3048                 else
3049                         len = sizeof(struct qeth_hdr_layer3);
3050
3051                 if (qeth_hdr_chk_and_bounce(new_skb, len))
3052                         goto tx_drop;
3053                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3054                                          elements_needed);
3055         } else
3056                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3057                                         elements_needed, data_offset, 0);
3058
3059         if (!rc) {
3060                 card->stats.tx_packets++;
3061                 card->stats.tx_bytes += tx_bytes;
3062                 if (new_skb != skb)
3063                         dev_kfree_skb_any(skb);
3064                 if (card->options.performance_stats) {
3065                         if (large_send) {
3066                                 card->perf_stats.large_send_bytes += tx_bytes;
3067                                 card->perf_stats.large_send_cnt++;
3068                         }
3069                         if (nr_frags) {
3070                                 card->perf_stats.sg_skbs_sent++;
3071                                 /* nr_frags + skb->data */
3072                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3073                         }
3074                 }
3075                 rc = NETDEV_TX_OK;
3076         } else {
3077                 if (data_offset >= 0)
3078                         kmem_cache_free(qeth_core_header_cache, hdr);
3079
3080                 if (rc == -EBUSY) {
3081                         if (new_skb != skb)
3082                                 dev_kfree_skb_any(new_skb);
3083                         return NETDEV_TX_BUSY;
3084                 } else
3085                         goto tx_drop;
3086         }
3087
3088         netif_wake_queue(dev);
3089         if (card->options.performance_stats)
3090                 card->perf_stats.outbound_time += qeth_get_micros() -
3091                         card->perf_stats.outbound_start_time;
3092         return rc;
3093
3094 tx_drop:
3095         card->stats.tx_dropped++;
3096         card->stats.tx_errors++;
3097         if ((new_skb != skb) && new_skb)
3098                 dev_kfree_skb_any(new_skb);
3099         dev_kfree_skb_any(skb);
3100         netif_wake_queue(dev);
3101         return NETDEV_TX_OK;
3102 }
3103
3104 static int __qeth_l3_open(struct net_device *dev)
3105 {
3106         struct qeth_card *card = dev->ml_priv;
3107         int rc = 0;
3108
3109         QETH_CARD_TEXT(card, 4, "qethopen");
3110         if (card->state == CARD_STATE_UP)
3111                 return rc;
3112         if (card->state != CARD_STATE_SOFTSETUP)
3113                 return -ENODEV;
3114         card->data.state = CH_STATE_UP;
3115         card->state = CARD_STATE_UP;
3116         netif_start_queue(dev);
3117
3118         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3119                 napi_enable(&card->napi);
3120                 napi_schedule(&card->napi);
3121         } else
3122                 rc = -EIO;
3123         return rc;
3124 }
3125
3126 static int qeth_l3_open(struct net_device *dev)
3127 {
3128         struct qeth_card *card = dev->ml_priv;
3129
3130         QETH_CARD_TEXT(card, 5, "qethope_");
3131         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3132                 QETH_CARD_TEXT(card, 3, "openREC");
3133                 return -ERESTARTSYS;
3134         }
3135         return __qeth_l3_open(dev);
3136 }
3137
3138 static int qeth_l3_stop(struct net_device *dev)
3139 {
3140         struct qeth_card *card = dev->ml_priv;
3141
3142         QETH_CARD_TEXT(card, 4, "qethstop");
3143         netif_tx_disable(dev);
3144         if (card->state == CARD_STATE_UP) {
3145                 card->state = CARD_STATE_SOFTSETUP;
3146                 napi_disable(&card->napi);
3147         }
3148         return 0;
3149 }
3150
3151 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3152         netdev_features_t features)
3153 {
3154         struct qeth_card *card = dev->ml_priv;
3155
3156         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3157                 features &= ~NETIF_F_IP_CSUM;
3158         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3159                 features &= ~NETIF_F_TSO;
3160         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3161                 features &= ~NETIF_F_RXCSUM;
3162
3163         return features;
3164 }
3165
3166 static int qeth_l3_set_features(struct net_device *dev,
3167         netdev_features_t features)
3168 {
3169         struct qeth_card *card = dev->ml_priv;
3170         u32 changed = dev->features ^ features;
3171         int err;
3172
3173         if (!(changed & NETIF_F_RXCSUM))
3174                 return 0;
3175
3176         if (card->state == CARD_STATE_DOWN ||
3177             card->state == CARD_STATE_RECOVER)
3178                 return 0;
3179
3180         err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3181         if (err)
3182                 dev->features = features ^ NETIF_F_RXCSUM;
3183
3184         return err;
3185 }
3186
3187 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3188         .get_link = ethtool_op_get_link,
3189         .get_strings = qeth_core_get_strings,
3190         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3191         .get_sset_count = qeth_core_get_sset_count,
3192         .get_drvinfo = qeth_core_get_drvinfo,
3193         .get_settings = qeth_core_ethtool_get_settings,
3194 };
3195
3196 /*
3197  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3198  * NOARP on the netdevice is no option because it also turns off neighbor
3199  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3200  * arp resolution but we want the hard header (packet socket will work
3201  * e.g. tcpdump)
3202  */
3203 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3204 {
3205         n->nud_state = NUD_NOARP;
3206         memcpy(n->ha, "FAKELL", 6);
3207         n->output = n->ops->connected_output;
3208         return 0;
3209 }
3210
3211 static int
3212 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3213 {
3214         if (np->tbl->family == AF_INET)
3215                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3216
3217         return 0;
3218 }
3219
3220 static const struct net_device_ops qeth_l3_netdev_ops = {
3221         .ndo_open               = qeth_l3_open,
3222         .ndo_stop               = qeth_l3_stop,
3223         .ndo_get_stats          = qeth_get_stats,
3224         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3225         .ndo_validate_addr      = eth_validate_addr,
3226         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3227         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3228         .ndo_change_mtu         = qeth_change_mtu,
3229         .ndo_fix_features       = qeth_l3_fix_features,
3230         .ndo_set_features       = qeth_l3_set_features,
3231         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3232         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3233         .ndo_tx_timeout         = qeth_tx_timeout,
3234 };
3235
3236 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3237         .ndo_open               = qeth_l3_open,
3238         .ndo_stop               = qeth_l3_stop,
3239         .ndo_get_stats          = qeth_get_stats,
3240         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3241         .ndo_validate_addr      = eth_validate_addr,
3242         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3243         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3244         .ndo_change_mtu         = qeth_change_mtu,
3245         .ndo_fix_features       = qeth_l3_fix_features,
3246         .ndo_set_features       = qeth_l3_set_features,
3247         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3248         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3249         .ndo_tx_timeout         = qeth_tx_timeout,
3250         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3251 };
3252
3253 static int qeth_l3_setup_netdev(struct qeth_card *card)
3254 {
3255         if (card->info.type == QETH_CARD_TYPE_OSD ||
3256             card->info.type == QETH_CARD_TYPE_OSX) {
3257                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3258                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3259                         pr_info("qeth_l3: ignoring TR device\n");
3260                         return -ENODEV;
3261                 } else {
3262                         card->dev = alloc_etherdev(0);
3263                         if (!card->dev)
3264                                 return -ENODEV;
3265                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3266
3267                         /*IPv6 address autoconfiguration stuff*/
3268                         qeth_l3_get_unique_id(card);
3269                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3270                                 card->dev->dev_id = card->info.unique_id &
3271                                                          0xffff;
3272                         if (!card->info.guestlan) {
3273                                 card->dev->hw_features = NETIF_F_SG |
3274                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3275                                         NETIF_F_TSO;
3276                                 card->dev->features = NETIF_F_RXCSUM;
3277                         }
3278                 }
3279         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3280                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3281                 if (!card->dev)
3282                         return -ENODEV;
3283                 card->dev->flags |= IFF_NOARP;
3284                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3285                 qeth_l3_iqd_read_initial_mac(card);
3286                 if (card->options.hsuid[0])
3287                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3288         } else
3289                 return -ENODEV;
3290
3291         card->dev->ml_priv = card;
3292         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3293         card->dev->mtu = card->info.initial_mtu;
3294         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3295         card->dev->features |=  NETIF_F_HW_VLAN_TX |
3296                                 NETIF_F_HW_VLAN_RX |
3297                                 NETIF_F_HW_VLAN_FILTER;
3298         card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3299         card->dev->gso_max_size = 15 * PAGE_SIZE;
3300
3301         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3302         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3303         return register_netdev(card->dev);
3304 }
3305
3306 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3307 {
3308         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3309
3310         qeth_l3_create_device_attributes(&gdev->dev);
3311         card->options.layer2 = 0;
3312         card->info.hwtrap = 0;
3313         return 0;
3314 }
3315
3316 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3317 {
3318         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3319
3320         qeth_l3_remove_device_attributes(&cgdev->dev);
3321
3322         qeth_set_allowed_threads(card, 0, 1);
3323         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3324
3325         if (cgdev->state == CCWGROUP_ONLINE)
3326                 qeth_l3_set_offline(cgdev);
3327
3328         if (card->dev) {
3329                 unregister_netdev(card->dev);
3330                 card->dev = NULL;
3331         }
3332
3333         qeth_l3_clear_ip_list(card, 0);
3334         qeth_l3_clear_ipato_list(card);
3335         return;
3336 }
3337
3338 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3339 {
3340         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3341         int rc = 0;
3342         enum qeth_card_states recover_flag;
3343
3344         mutex_lock(&card->discipline_mutex);
3345         mutex_lock(&card->conf_mutex);
3346         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3347         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3348
3349         recover_flag = card->state;
3350         rc = qeth_core_hardsetup_card(card);
3351         if (rc) {
3352                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3353                 rc = -ENODEV;
3354                 goto out_remove;
3355         }
3356
3357         if (!card->dev && qeth_l3_setup_netdev(card)) {
3358                 rc = -ENODEV;
3359                 goto out_remove;
3360         }
3361
3362         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3363                 if (card->info.hwtrap &&
3364                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3365                         card->info.hwtrap = 0;
3366         } else
3367                 card->info.hwtrap = 0;
3368
3369         card->state = CARD_STATE_HARDSETUP;
3370         memset(&card->rx, 0, sizeof(struct qeth_rx));
3371         qeth_print_status_message(card);
3372
3373         /* softsetup */
3374         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3375
3376         rc = qeth_send_startlan(card);
3377         if (rc) {
3378                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3379                 if (rc == 0xe080) {
3380                         dev_warn(&card->gdev->dev,
3381                                 "The LAN is offline\n");
3382                         card->lan_online = 0;
3383                         goto contin;
3384                 }
3385                 rc = -ENODEV;
3386                 goto out_remove;
3387         } else
3388                 card->lan_online = 1;
3389
3390 contin:
3391         rc = qeth_l3_setadapter_parms(card);
3392         if (rc)
3393                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3394         if (!card->options.sniffer) {
3395                 rc = qeth_l3_start_ipassists(card);
3396                 if (rc) {
3397                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3398                         goto out_remove;
3399                 }
3400                 rc = qeth_l3_setrouting_v4(card);
3401                 if (rc)
3402                         QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3403                 rc = qeth_l3_setrouting_v6(card);
3404                 if (rc)
3405                         QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3406         }
3407         netif_tx_disable(card->dev);
3408
3409         rc = qeth_init_qdio_queues(card);
3410         if (rc) {
3411                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3412                 rc = -ENODEV;
3413                 goto out_remove;
3414         }
3415         card->state = CARD_STATE_SOFTSETUP;
3416
3417         qeth_set_allowed_threads(card, 0xffffffff, 0);
3418         qeth_l3_set_ip_addr_list(card);
3419         if (card->lan_online)
3420                 netif_carrier_on(card->dev);
3421         else
3422                 netif_carrier_off(card->dev);
3423         if (recover_flag == CARD_STATE_RECOVER) {
3424                 rtnl_lock();
3425                 if (recovery_mode)
3426                         __qeth_l3_open(card->dev);
3427                 else
3428                         dev_open(card->dev);
3429                 qeth_l3_set_multicast_list(card->dev);
3430                 rtnl_unlock();
3431         }
3432         qeth_trace_features(card);
3433         /* let user_space know that device is online */
3434         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3435         mutex_unlock(&card->conf_mutex);
3436         mutex_unlock(&card->discipline_mutex);
3437         return 0;
3438 out_remove:
3439         qeth_l3_stop_card(card, 0);
3440         ccw_device_set_offline(CARD_DDEV(card));
3441         ccw_device_set_offline(CARD_WDEV(card));
3442         ccw_device_set_offline(CARD_RDEV(card));
3443         if (recover_flag == CARD_STATE_RECOVER)
3444                 card->state = CARD_STATE_RECOVER;
3445         else
3446                 card->state = CARD_STATE_DOWN;
3447         mutex_unlock(&card->conf_mutex);
3448         mutex_unlock(&card->discipline_mutex);
3449         return rc;
3450 }
3451
3452 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3453 {
3454         return __qeth_l3_set_online(gdev, 0);
3455 }
3456
3457 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3458                         int recovery_mode)
3459 {
3460         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3461         int rc = 0, rc2 = 0, rc3 = 0;
3462         enum qeth_card_states recover_flag;
3463
3464         mutex_lock(&card->discipline_mutex);
3465         mutex_lock(&card->conf_mutex);
3466         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3467         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3468
3469         if (card->dev && netif_carrier_ok(card->dev))
3470                 netif_carrier_off(card->dev);
3471         recover_flag = card->state;
3472         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3473                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3474                 card->info.hwtrap = 1;
3475         }
3476         qeth_l3_stop_card(card, recovery_mode);
3477         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3478                 rtnl_lock();
3479                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3480                 rtnl_unlock();
3481         }
3482         rc  = ccw_device_set_offline(CARD_DDEV(card));
3483         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3484         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3485         if (!rc)
3486                 rc = (rc2) ? rc2 : rc3;
3487         if (rc)
3488                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3489         if (recover_flag == CARD_STATE_UP)
3490                 card->state = CARD_STATE_RECOVER;
3491         /* let user_space know that device is offline */
3492         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3493         mutex_unlock(&card->conf_mutex);
3494         mutex_unlock(&card->discipline_mutex);
3495         return 0;
3496 }
3497
3498 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3499 {
3500         return __qeth_l3_set_offline(cgdev, 0);
3501 }
3502
3503 static int qeth_l3_recover(void *ptr)
3504 {
3505         struct qeth_card *card;
3506         int rc = 0;
3507
3508         card = (struct qeth_card *) ptr;
3509         QETH_CARD_TEXT(card, 2, "recover1");
3510         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3511         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3512                 return 0;
3513         QETH_CARD_TEXT(card, 2, "recover2");
3514         dev_warn(&card->gdev->dev,
3515                 "A recovery process has been started for the device\n");
3516         __qeth_l3_set_offline(card->gdev, 1);
3517         rc = __qeth_l3_set_online(card->gdev, 1);
3518         if (!rc)
3519                 dev_info(&card->gdev->dev,
3520                         "Device successfully recovered!\n");
3521         else {
3522                 qeth_close_dev(card);
3523                 dev_warn(&card->gdev->dev, "The qeth device driver "
3524                                 "failed to recover an error on the device\n");
3525         }
3526         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3527         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3528         return 0;
3529 }
3530
3531 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3532 {
3533         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3534         qeth_set_allowed_threads(card, 0, 1);
3535         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3536                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3537         qeth_qdio_clear_card(card, 0);
3538         qeth_clear_qdio_buffers(card);
3539 }
3540
3541 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3542 {
3543         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3544
3545         if (card->dev)
3546                 netif_device_detach(card->dev);
3547         qeth_set_allowed_threads(card, 0, 1);
3548         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3549         if (gdev->state == CCWGROUP_OFFLINE)
3550                 return 0;
3551         if (card->state == CARD_STATE_UP) {
3552                 if (card->info.hwtrap)
3553                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3554                 __qeth_l3_set_offline(card->gdev, 1);
3555         } else
3556                 __qeth_l3_set_offline(card->gdev, 0);
3557         return 0;
3558 }
3559
3560 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3561 {
3562         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3563         int rc = 0;
3564
3565         if (gdev->state == CCWGROUP_OFFLINE)
3566                 goto out;
3567
3568         if (card->state == CARD_STATE_RECOVER) {
3569                 rc = __qeth_l3_set_online(card->gdev, 1);
3570                 if (rc) {
3571                         rtnl_lock();
3572                         dev_close(card->dev);
3573                         rtnl_unlock();
3574                 }
3575         } else
3576                 rc = __qeth_l3_set_online(card->gdev, 0);
3577 out:
3578         qeth_set_allowed_threads(card, 0xffffffff, 0);
3579         if (card->dev)
3580                 netif_device_attach(card->dev);
3581         if (rc)
3582                 dev_warn(&card->gdev->dev, "The qeth device driver "
3583                         "failed to recover an error on the device\n");
3584         return rc;
3585 }
3586
3587 struct qeth_discipline qeth_l3_discipline = {
3588         .start_poll = qeth_qdio_start_poll,
3589         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3590         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3591         .recover = qeth_l3_recover,
3592         .setup = qeth_l3_probe_device,
3593         .remove = qeth_l3_remove_device,
3594         .set_online = qeth_l3_set_online,
3595         .set_offline = qeth_l3_set_offline,
3596         .shutdown = qeth_l3_shutdown,
3597         .freeze = qeth_l3_pm_suspend,
3598         .thaw = qeth_l3_pm_resume,
3599         .restore = qeth_l3_pm_resume,
3600 };
3601 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3602
3603 static int qeth_l3_ip_event(struct notifier_block *this,
3604                             unsigned long event, void *ptr)
3605 {
3606         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3607         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3608         struct qeth_ipaddr *addr;
3609         struct qeth_card *card;
3610
3611         if (dev_net(dev) != &init_net)
3612                 return NOTIFY_DONE;
3613
3614         card = qeth_l3_get_card_from_dev(dev);
3615         if (!card)
3616                 return NOTIFY_DONE;
3617         QETH_CARD_TEXT(card, 3, "ipevent");
3618
3619         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3620         if (addr != NULL) {
3621                 addr->u.a4.addr = ifa->ifa_address;
3622                 addr->u.a4.mask = ifa->ifa_mask;
3623                 addr->type = QETH_IP_TYPE_NORMAL;
3624         } else
3625                 goto out;
3626
3627         switch (event) {
3628         case NETDEV_UP:
3629                 if (!qeth_l3_add_ip(card, addr))
3630                         kfree(addr);
3631                 break;
3632         case NETDEV_DOWN:
3633                 if (!qeth_l3_delete_ip(card, addr))
3634                         kfree(addr);
3635                 break;
3636         default:
3637                 break;
3638         }
3639         qeth_l3_set_ip_addr_list(card);
3640 out:
3641         return NOTIFY_DONE;
3642 }
3643
3644 static struct notifier_block qeth_l3_ip_notifier = {
3645         qeth_l3_ip_event,
3646         NULL,
3647 };
3648
3649 #ifdef CONFIG_QETH_IPV6
3650 /**
3651  * IPv6 event handler
3652  */
3653 static int qeth_l3_ip6_event(struct notifier_block *this,
3654                              unsigned long event, void *ptr)
3655 {
3656         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3657         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3658         struct qeth_ipaddr *addr;
3659         struct qeth_card *card;
3660
3661         card = qeth_l3_get_card_from_dev(dev);
3662         if (!card)
3663                 return NOTIFY_DONE;
3664         QETH_CARD_TEXT(card, 3, "ip6event");
3665         if (!qeth_is_supported(card, IPA_IPV6))
3666                 return NOTIFY_DONE;
3667
3668         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3669         if (addr != NULL) {
3670                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3671                 addr->u.a6.pfxlen = ifa->prefix_len;
3672                 addr->type = QETH_IP_TYPE_NORMAL;
3673         } else
3674                 goto out;
3675
3676         switch (event) {
3677         case NETDEV_UP:
3678                 if (!qeth_l3_add_ip(card, addr))
3679                         kfree(addr);
3680                 break;
3681         case NETDEV_DOWN:
3682                 if (!qeth_l3_delete_ip(card, addr))
3683                         kfree(addr);
3684                 break;
3685         default:
3686                 break;
3687         }
3688         qeth_l3_set_ip_addr_list(card);
3689 out:
3690         return NOTIFY_DONE;
3691 }
3692
3693 static struct notifier_block qeth_l3_ip6_notifier = {
3694         qeth_l3_ip6_event,
3695         NULL,
3696 };
3697 #endif
3698
3699 static int qeth_l3_register_notifiers(void)
3700 {
3701         int rc;
3702
3703         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3704         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3705         if (rc)
3706                 return rc;
3707 #ifdef CONFIG_QETH_IPV6
3708         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3709         if (rc) {
3710                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3711                 return rc;
3712         }
3713 #else
3714         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3715 #endif
3716         return 0;
3717 }
3718
3719 static void qeth_l3_unregister_notifiers(void)
3720 {
3721
3722         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3723         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3724 #ifdef CONFIG_QETH_IPV6
3725         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3726 #endif /* QETH_IPV6 */
3727 }
3728
3729 static int __init qeth_l3_init(void)
3730 {
3731         int rc = 0;
3732
3733         pr_info("register layer 3 discipline\n");
3734         rc = qeth_l3_register_notifiers();
3735         return rc;
3736 }
3737
3738 static void __exit qeth_l3_exit(void)
3739 {
3740         qeth_l3_unregister_notifiers();
3741         pr_info("unregister layer 3 discipline\n");
3742 }
3743
3744 module_init(qeth_l3_init);
3745 module_exit(qeth_l3_exit);
3746 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3747 MODULE_DESCRIPTION("qeth layer 3 discipline");
3748 MODULE_LICENSE("GPL");