drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/bitops.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/mii.h>
  20 #include <linux/ip.h>
  21 #include <linux/ipv6.h>
  22 #include <linux/inetdevice.h>
  23 #include <linux/igmp.h>
  24 #include <linux/slab.h>
  25 #include <linux/if_vlan.h>
  26
  27 #include <net/ip.h>
  28 #include <net/arp.h>
  29 #include <net/route.h>
  30 #include <net/ip6_fib.h>
  31 #include <net/ip6_checksum.h>
  32 #include <net/iucv/af_iucv.h>
  33
  34 #include "qeth_l3.h"
  35
  36
  37 static int qeth_l3_set_offline(struct ccwgroup_device *);
  38 static int qeth_l3_recover(void *);
  39 static int qeth_l3_stop(struct net_device *);
  40 static void qeth_l3_set_multicast_list(struct net_device *);
  41 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  42 static int qeth_l3_register_addr_entry(struct qeth_card *,
  43                 struct qeth_ipaddr *);
  44 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  45                 struct qeth_ipaddr *);
  46 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  47 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  48
  49 static int qeth_l3_isxdigit(char *buf)
  50 {
  51         while (*buf) {
  52                 if (!isxdigit(*buf++))
  53                         return 0;
  54         }
  55         return 1;
  56 }
  57
  58 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  59 {
  60         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
  61 }
  62
  63 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  64 {
  65         int count = 0, rc = 0;
  66         unsigned int in[4];
  67         char c;
  68
  69         rc = sscanf(buf, "%u.%u.%u.%u%c",
  70                     &in[0], &in[1], &in[2], &in[3], &c);
  71         if (rc != 4 && (rc != 5 || c != '\n'))
  72                 return -EINVAL;
  73         for (count = 0; count < 4; count++) {
  74                 if (in[count] > 255)
  75                         return -EINVAL;
  76                 addr[count] = in[count];
  77         }
  78         return 0;
  79 }
  80
  81 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  82 {
  83         sprintf(buf, "%pI6", addr);
  84 }
  85
  86 static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  87 {
  88         const char *end, *end_tmp, *start;
  89         __u16 *in;
  90         char num[5];
  91         int num2, cnt, out, found, save_cnt;
  92         unsigned short in_tmp[8] = {0, };
  93
  94         cnt = out = found = save_cnt = num2 = 0;
  95         end = start = buf;
  96         in = (__u16 *) addr;
  97         memset(in, 0, 16);
  98         while (*end) {
  99                 end = strchr(start, ':');
 100                 if (end == NULL) {
 101                         end = buf + strlen(buf);
 102                         end_tmp = strchr(start, '\n');
 103                         if (end_tmp != NULL)
 104                                 end = end_tmp;
 105                         out = 1;
 106                 }
 107                 if ((end - start)) {
 108                         memset(num, 0, 5);
 109                         if ((end - start) > 4)
 110                                 return -EINVAL;
 111                         memcpy(num, start, end - start);
 112                         if (!qeth_l3_isxdigit(num))
 113                                 return -EINVAL;
 114                         sscanf(start, "%x", &num2);
 115                         if (found)
 116                                 in_tmp[save_cnt++] = num2;
 117                         else
 118                                 in[cnt++] = num2;
 119                         if (out)
 120                                 break;
 121                 } else {
 122                         if (found)
 123                                 return -EINVAL;
 124                         found = 1;
 125                 }
 126                 start = ++end;
 127         }
 128         if (cnt + save_cnt > 8)
 129                 return -EINVAL;
 130         cnt = 7;
 131         while (save_cnt)
 132                 in[cnt--] = in_tmp[--save_cnt];
 133         return 0;
 134 }
 135
 136 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 137                                 char *buf)
 138 {
 139         if (proto == QETH_PROT_IPV4)
 140                 qeth_l3_ipaddr4_to_string(addr, buf);
 141         else if (proto == QETH_PROT_IPV6)
 142                 qeth_l3_ipaddr6_to_string(addr, buf);
 143 }
 144
 145 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 146                                 __u8 *addr)
 147 {
 148         if (proto == QETH_PROT_IPV4)
 149                 return qeth_l3_string_to_ipaddr4(buf, addr);
 150         else if (proto == QETH_PROT_IPV6)
 151                 return qeth_l3_string_to_ipaddr6(buf, addr);
 152         else
 153                 return -EINVAL;
 154 }
 155
 156 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 157 {
 158         int i, j;
 159         u8 octet;
 160
 161         for (i = 0; i < len; ++i) {
 162                 octet = addr[i];
 163                 for (j = 7; j >= 0; --j) {
 164                         bits[i*8 + j] = octet & 1;
 165                         octet >>= 1;
 166                 }
 167         }
 168 }
 169
 170 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 171                                                 struct qeth_ipaddr *addr)
 172 {
 173         struct qeth_ipato_entry *ipatoe;
 174         u8 addr_bits[128] = {0, };
 175         u8 ipatoe_bits[128] = {0, };
 176         int rc = 0;
 177
 178         if (!card->ipato.enabled)
 179                 return 0;
 180
 181         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 182                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 183         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 184                 if (addr->proto != ipatoe->proto)
 185                         continue;
 186                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 187                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 188                                           4 : 16);
 189                 if (addr->proto == QETH_PROT_IPV4)
 190                         rc = !memcmp(addr_bits, ipatoe_bits,
 191                                      min(32, ipatoe->mask_bits));
 192                 else
 193                         rc = !memcmp(addr_bits, ipatoe_bits,
 194                                      min(128, ipatoe->mask_bits));
 195                 if (rc)
 196                         break;
 197         }
 198         /* invert? */
 199         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 200                 rc = !rc;
 201         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 202                 rc = !rc;
 203
 204         return rc;
 205 }
 206
 207 /*
 208  * Add IP to be added to todo list. If there is already an "add todo"
 209  * in this list we just incremenent the reference count.
 210  * Returns 0 if we  just incremented reference count.
 211  */
 212 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
 213                                         struct qeth_ipaddr *addr, int add)
 214 {
 215         struct qeth_ipaddr *tmp, *t;
 216         int found = 0;
 217
 218         if (card->options.sniffer)
 219                 return 0;
 220         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
 221                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
 222                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
 223                         return 0;
 224                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
 225                     (addr->proto       == QETH_PROT_IPV4)     &&
 226                     (tmp->type         == addr->type)         &&
 227                     (tmp->is_multicast == addr->is_multicast) &&
 228                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
 229                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
 230                         found = 1;
 231                         break;
 232                 }
 233                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
 234                     (addr->proto       == QETH_PROT_IPV6)      &&
 235                     (tmp->type         == addr->type)          &&
 236                     (tmp->is_multicast == addr->is_multicast)  &&
 237                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
 238                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 239                             sizeof(struct in6_addr)) == 0)) {
 240                         found = 1;
 241                         break;
 242                 }
 243         }
 244         if (found) {
 245                 if (addr->users != 0)
 246                         tmp->users += addr->users;
 247                 else
 248                         tmp->users += add ? 1 : -1;
 249                 if (tmp->users == 0) {
 250                         list_del(&tmp->entry);
 251                         kfree(tmp);
 252                 }
 253                 return 0;
 254         } else {
 255                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
 256                         list_add(&addr->entry, card->ip_tbd_list);
 257                 else {
 258                         if (addr->users == 0)
 259                                 addr->users += add ? 1 : -1;
 260                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
 261                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 262                                 QETH_CARD_TEXT(card, 2, "tkovaddr");
 263                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 264                         }
 265                         list_add_tail(&addr->entry, card->ip_tbd_list);
 266                 }
 267                 return 1;
 268         }
 269 }
 270
 271 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 272 {
 273         unsigned long flags;
 274         int rc = 0;
 275
 276         QETH_CARD_TEXT(card, 4, "delip");
 277
 278         if (addr->proto == QETH_PROT_IPV4)
 279                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 280         else {
 281                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 282                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 283         }
 284         spin_lock_irqsave(&card->ip_lock, flags);
 285         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
 286         spin_unlock_irqrestore(&card->ip_lock, flags);
 287         return rc;
 288 }
 289
 290 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 291 {
 292         unsigned long flags;
 293         int rc = 0;
 294
 295         QETH_CARD_TEXT(card, 4, "addip");
 296         if (addr->proto == QETH_PROT_IPV4)
 297                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 298         else {
 299                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 300                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 301         }
 302         spin_lock_irqsave(&card->ip_lock, flags);
 303         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
 304         spin_unlock_irqrestore(&card->ip_lock, flags);
 305         return rc;
 306 }
 307
 308
 309 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 310                                 enum qeth_prot_versions prot)
 311 {
 312         struct qeth_ipaddr *addr;
 313
 314         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 315         if (addr == NULL) {
 316                 return NULL;
 317         }
 318         addr->type = QETH_IP_TYPE_NORMAL;
 319         addr->proto = prot;
 320         return addr;
 321 }
 322
 323 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
 324 {
 325         struct qeth_ipaddr *iptodo;
 326         unsigned long flags;
 327
 328         QETH_CARD_TEXT(card, 4, "delmc");
 329         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
 330         if (!iptodo) {
 331                 QETH_CARD_TEXT(card, 2, "dmcnomem");
 332                 return;
 333         }
 334         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
 335         spin_lock_irqsave(&card->ip_lock, flags);
 336         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
 337                 kfree(iptodo);
 338         spin_unlock_irqrestore(&card->ip_lock, flags);
 339 }
 340
 341 /*
 342  * Add/remove address to/from card's ip list, i.e. try to add or remove
 343  * reference to/from an IP address that is already registered on the card.
 344  * Returns:
 345  *      0  address was on card and its reference count has been adjusted,
 346  *         but is still > 0, so nothing has to be done
 347  *         also returns 0 if card was not on card and the todo was to delete
 348  *         the address -> there is also nothing to be done
 349  *      1  address was not on card and the todo is to add it to the card's ip
 350  *         list
 351  *      -1 address was on card and its reference count has been decremented
 352  *         to <= 0 by the todo -> address must be removed from card
 353  */
 354 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
 355                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
 356 {
 357         struct qeth_ipaddr *addr;
 358         int found = 0;
 359
 360         list_for_each_entry(addr, &card->ip_list, entry) {
 361                 if ((addr->proto == QETH_PROT_IPV4) &&
 362                     (todo->proto == QETH_PROT_IPV4) &&
 363                     (addr->type == todo->type) &&
 364                     (addr->u.a4.addr == todo->u.a4.addr) &&
 365                     (addr->u.a4.mask == todo->u.a4.mask)) {
 366                         found = 1;
 367                         break;
 368                 }
 369                 if ((addr->proto == QETH_PROT_IPV6) &&
 370                     (todo->proto == QETH_PROT_IPV6) &&
 371                     (addr->type == todo->type) &&
 372                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
 373                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
 374                             sizeof(struct in6_addr)) == 0)) {
 375                         found = 1;
 376                         break;
 377                 }
 378         }
 379         if (found) {
 380                 addr->users += todo->users;
 381                 if (addr->users <= 0) {
 382                         *__addr = addr;
 383                         return -1;
 384                 } else {
 385                         /* for VIPA and RXIP limit refcount to 1 */
 386                         if (addr->type != QETH_IP_TYPE_NORMAL)
 387                                 addr->users = 1;
 388                         return 0;
 389                 }
 390         }
 391         if (todo->users > 0) {
 392                 /* for VIPA and RXIP limit refcount to 1 */
 393                 if (todo->type != QETH_IP_TYPE_NORMAL)
 394                         todo->users = 1;
 395                 return 1;
 396         } else
 397                 return 0;
 398 }
 399
 400 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
 401                                         unsigned long *flags)
 402 {
 403         struct list_head fail_list;
 404         struct qeth_ipaddr *addr, *tmp;
 405         int rc;
 406
 407         INIT_LIST_HEAD(&fail_list);
 408 again:
 409         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
 410                 if (addr->is_multicast) {
 411                         list_del(&addr->entry);
 412                         spin_unlock_irqrestore(&card->ip_lock, *flags);
 413                         rc = qeth_l3_deregister_addr_entry(card, addr);
 414                         spin_lock_irqsave(&card->ip_lock, *flags);
 415                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
 416                                 kfree(addr);
 417                         else
 418                                 list_add_tail(&addr->entry, &fail_list);
 419                         goto again;
 420                 }
 421         }
 422         list_splice(&fail_list, &card->ip_list);
 423 }
 424
 425 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
 426 {
 427         struct list_head *tbd_list;
 428         struct qeth_ipaddr *todo, *addr;
 429         unsigned long flags;
 430         int rc;
 431
 432         QETH_CARD_TEXT(card, 2, "sdiplist");
 433         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
 434
 435         if (!qeth_card_hw_is_reachable(card) || card->options.sniffer)
 436                 return;
 437
 438         spin_lock_irqsave(&card->ip_lock, flags);
 439         tbd_list = card->ip_tbd_list;
 440         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
 441         if (!card->ip_tbd_list) {
 442                 QETH_CARD_TEXT(card, 0, "silnomem");
 443                 card->ip_tbd_list = tbd_list;
 444                 spin_unlock_irqrestore(&card->ip_lock, flags);
 445                 return;
 446         } else
 447                 INIT_LIST_HEAD(card->ip_tbd_list);
 448
 449         while (!list_empty(tbd_list)) {
 450                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
 451                 list_del(&todo->entry);
 452                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
 453                         __qeth_l3_delete_all_mc(card, &flags);
 454                         kfree(todo);
 455                         continue;
 456                 }
 457                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
 458                 if (rc == 0) {
 459                         /* nothing to be done; only adjusted refcount */
 460                         kfree(todo);
 461                 } else if (rc == 1) {
 462                         /* new entry to be added to on-card list */
 463                         spin_unlock_irqrestore(&card->ip_lock, flags);
 464                         rc = qeth_l3_register_addr_entry(card, todo);
 465                         spin_lock_irqsave(&card->ip_lock, flags);
 466                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
 467                                 list_add_tail(&todo->entry, &card->ip_list);
 468                         else
 469                                 kfree(todo);
 470                 } else if (rc == -1) {
 471                         /* on-card entry to be removed */
 472                         list_del_init(&addr->entry);
 473                         spin_unlock_irqrestore(&card->ip_lock, flags);
 474                         rc = qeth_l3_deregister_addr_entry(card, addr);
 475                         spin_lock_irqsave(&card->ip_lock, flags);
 476                         if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
 477                                 kfree(addr);
 478                         else
 479                                 list_add_tail(&addr->entry, &card->ip_list);
 480                         kfree(todo);
 481                 }
 482         }
 483         spin_unlock_irqrestore(&card->ip_lock, flags);
 484         kfree(tbd_list);
 485 }
 486
 487 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
 488 {
 489         struct qeth_ipaddr *addr, *tmp;
 490         unsigned long flags;
 491
 492         QETH_CARD_TEXT(card, 4, "clearip");
 493         if (recover && card->options.sniffer)
 494                 return;
 495         spin_lock_irqsave(&card->ip_lock, flags);
 496         /* clear todo list */
 497         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
 498                 list_del(&addr->entry);
 499                 kfree(addr);
 500         }
 501
 502         while (!list_empty(&card->ip_list)) {
 503                 addr = list_entry(card->ip_list.next,
 504                                   struct qeth_ipaddr, entry);
 505                 list_del_init(&addr->entry);
 506                 if (!recover || addr->is_multicast) {
 507                         kfree(addr);
 508                         continue;
 509                 }
 510                 list_add_tail(&addr->entry, card->ip_tbd_list);
 511         }
 512         spin_unlock_irqrestore(&card->ip_lock, flags);
 513 }
 514
 515 static int qeth_l3_address_exists_in_list(struct list_head *list,
 516                 struct qeth_ipaddr *addr, int same_type)
 517 {
 518         struct qeth_ipaddr *tmp;
 519
 520         list_for_each_entry(tmp, list, entry) {
 521                 if ((tmp->proto == QETH_PROT_IPV4) &&
 522                     (addr->proto == QETH_PROT_IPV4) &&
 523                     ((same_type && (tmp->type == addr->type)) ||
 524                     (!same_type && (tmp->type != addr->type))) &&
 525                     (tmp->u.a4.addr == addr->u.a4.addr))
 526                         return 1;
 527
 528                 if ((tmp->proto == QETH_PROT_IPV6) &&
 529                     (addr->proto == QETH_PROT_IPV6) &&
 530                     ((same_type && (tmp->type == addr->type)) ||
 531                     (!same_type && (tmp->type != addr->type))) &&
 532                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 533                             sizeof(struct in6_addr)) == 0))
 534                         return 1;
 535
 536         }
 537         return 0;
 538 }
 539
 540 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 541                         struct qeth_ipaddr *addr, int ipacmd)
 542 {
 543         int rc;
 544         struct qeth_cmd_buffer *iob;
 545         struct qeth_ipa_cmd *cmd;
 546
 547         QETH_CARD_TEXT(card, 4, "setdelmc");
 548
 549         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 550         if (!iob)
 551                 return -ENOMEM;
 552         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 553         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 554         if (addr->proto == QETH_PROT_IPV6)
 555                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 556                        sizeof(struct in6_addr));
 557         else
 558                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 559
 560         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 561
 562         return rc;
 563 }
 564
 565 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 566 {
 567         int i, j;
 568         for (i = 0; i < 16; i++) {
 569                 j = (len) - (i * 8);
 570                 if (j >= 8)
 571                         netmask[i] = 0xff;
 572                 else if (j > 0)
 573                         netmask[i] = (u8)(0xFF00 >> j);
 574                 else
 575                         netmask[i] = 0;
 576         }
 577 }
 578
 579 static int qeth_l3_send_setdelip(struct qeth_card *card,
 580                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 581 {
 582         int rc;
 583         struct qeth_cmd_buffer *iob;
 584         struct qeth_ipa_cmd *cmd;
 585         __u8 netmask[16];
 586
 587         QETH_CARD_TEXT(card, 4, "setdelip");
 588         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 589
 590         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 591         if (!iob)
 592                 return -ENOMEM;
 593         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 594         if (addr->proto == QETH_PROT_IPV6) {
 595                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 596                        sizeof(struct in6_addr));
 597                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 598                 memcpy(cmd->data.setdelip6.mask, netmask,
 599                        sizeof(struct in6_addr));
 600                 cmd->data.setdelip6.flags = flags;
 601         } else {
 602                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 603                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 604                 cmd->data.setdelip4.flags = flags;
 605         }
 606
 607         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 608
 609         return rc;
 610 }
 611
 612 static int qeth_l3_send_setrouting(struct qeth_card *card,
 613         enum qeth_routing_types type, enum qeth_prot_versions prot)
 614 {
 615         int rc;
 616         struct qeth_ipa_cmd *cmd;
 617         struct qeth_cmd_buffer *iob;
 618
 619         QETH_CARD_TEXT(card, 4, "setroutg");
 620         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 621         if (!iob)
 622                 return -ENOMEM;
 623         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 624         cmd->data.setrtg.type = (type);
 625         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 626
 627         return rc;
 628 }
 629
 630 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 631                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 632 {
 633         if (card->info.type == QETH_CARD_TYPE_IQD) {
 634                 switch (*type) {
 635                 case NO_ROUTER:
 636                 case PRIMARY_CONNECTOR:
 637                 case SECONDARY_CONNECTOR:
 638                 case MULTICAST_ROUTER:
 639                         return 0;
 640                 default:
 641                         goto out_inval;
 642                 }
 643         } else {
 644                 switch (*type) {
 645                 case NO_ROUTER:
 646                 case PRIMARY_ROUTER:
 647                 case SECONDARY_ROUTER:
 648                         return 0;
 649                 case MULTICAST_ROUTER:
 650                         if (qeth_is_ipafunc_supported(card, prot,
 651                                                       IPA_OSA_MC_ROUTER))
 652                                 return 0;
 653                 default:
 654                         goto out_inval;
 655                 }
 656         }
 657 out_inval:
 658         *type = NO_ROUTER;
 659         return -EINVAL;
 660 }
 661
 662 int qeth_l3_setrouting_v4(struct qeth_card *card)
 663 {
 664         int rc;
 665
 666         QETH_CARD_TEXT(card, 3, "setrtg4");
 667
 668         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 669                                   QETH_PROT_IPV4);
 670         if (rc)
 671                 return rc;
 672
 673         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 674                                   QETH_PROT_IPV4);
 675         if (rc) {
 676                 card->options.route4.type = NO_ROUTER;
 677                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 678                         " on %s. Type set to 'no router'.\n", rc,
 679                         QETH_CARD_IFNAME(card));
 680         }
 681         return rc;
 682 }
 683
 684 int qeth_l3_setrouting_v6(struct qeth_card *card)
 685 {
 686         int rc = 0;
 687
 688         QETH_CARD_TEXT(card, 3, "setrtg6");
 689 #ifdef CONFIG_QETH_IPV6
 690
 691         if (!qeth_is_supported(card, IPA_IPV6))
 692                 return 0;
 693         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 694                                   QETH_PROT_IPV6);
 695         if (rc)
 696                 return rc;
 697
 698         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 699                                   QETH_PROT_IPV6);
 700         if (rc) {
 701                 card->options.route6.type = NO_ROUTER;
 702                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 703                         " on %s. Type set to 'no router'.\n", rc,
 704                         QETH_CARD_IFNAME(card));
 705         }
 706 #endif
 707         return rc;
 708 }
 709
 710 /*
 711  * IP address takeover related functions
 712  */
 713 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 714 {
 715
 716         struct qeth_ipato_entry *ipatoe, *tmp;
 717         unsigned long flags;
 718
 719         spin_lock_irqsave(&card->ip_lock, flags);
 720         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 721                 list_del(&ipatoe->entry);
 722                 kfree(ipatoe);
 723         }
 724         spin_unlock_irqrestore(&card->ip_lock, flags);
 725 }
 726
 727 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 728                                 struct qeth_ipato_entry *new)
 729 {
 730         struct qeth_ipato_entry *ipatoe;
 731         unsigned long flags;
 732         int rc = 0;
 733
 734         QETH_CARD_TEXT(card, 2, "addipato");
 735         spin_lock_irqsave(&card->ip_lock, flags);
 736         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 737                 if (ipatoe->proto != new->proto)
 738                         continue;
 739                 if (!memcmp(ipatoe->addr, new->addr,
 740                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 741                     (ipatoe->mask_bits == new->mask_bits)) {
 742                         rc = -EEXIST;
 743                         break;
 744                 }
 745         }
 746         if (!rc)
 747                 list_add_tail(&new->entry, &card->ipato.entries);
 748
 749         spin_unlock_irqrestore(&card->ip_lock, flags);
 750         return rc;
 751 }
 752
 753 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 754                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 755 {
 756         struct qeth_ipato_entry *ipatoe, *tmp;
 757         unsigned long flags;
 758
 759         QETH_CARD_TEXT(card, 2, "delipato");
 760         spin_lock_irqsave(&card->ip_lock, flags);
 761         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 762                 if (ipatoe->proto != proto)
 763                         continue;
 764                 if (!memcmp(ipatoe->addr, addr,
 765                             (proto == QETH_PROT_IPV4)? 4:16) &&
 766                     (ipatoe->mask_bits == mask_bits)) {
 767                         list_del(&ipatoe->entry);
 768                         kfree(ipatoe);
 769                 }
 770         }
 771         spin_unlock_irqrestore(&card->ip_lock, flags);
 772 }
 773
 774 /*
 775  * VIPA related functions
 776  */
 777 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 778               const u8 *addr)
 779 {
 780         struct qeth_ipaddr *ipaddr;
 781         unsigned long flags;
 782         int rc = 0;
 783
 784         ipaddr = qeth_l3_get_addr_buffer(proto);
 785         if (ipaddr) {
 786                 if (proto == QETH_PROT_IPV4) {
 787                         QETH_CARD_TEXT(card, 2, "addvipa4");
 788                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 789                         ipaddr->u.a4.mask = 0;
 790                 } else if (proto == QETH_PROT_IPV6) {
 791                         QETH_CARD_TEXT(card, 2, "addvipa6");
 792                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 793                         ipaddr->u.a6.pfxlen = 0;
 794                 }
 795                 ipaddr->type = QETH_IP_TYPE_VIPA;
 796                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 797                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 798         } else
 799                 return -ENOMEM;
 800         spin_lock_irqsave(&card->ip_lock, flags);
 801         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 802             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 803                 rc = -EEXIST;
 804         spin_unlock_irqrestore(&card->ip_lock, flags);
 805         if (rc) {
 806                 kfree(ipaddr);
 807                 return rc;
 808         }
 809         if (!qeth_l3_add_ip(card, ipaddr))
 810                 kfree(ipaddr);
 811         qeth_l3_set_ip_addr_list(card);
 812         return rc;
 813 }
 814
 815 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 816               const u8 *addr)
 817 {
 818         struct qeth_ipaddr *ipaddr;
 819
 820         ipaddr = qeth_l3_get_addr_buffer(proto);
 821         if (ipaddr) {
 822                 if (proto == QETH_PROT_IPV4) {
 823                         QETH_CARD_TEXT(card, 2, "delvipa4");
 824                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 825                         ipaddr->u.a4.mask = 0;
 826                 } else if (proto == QETH_PROT_IPV6) {
 827                         QETH_CARD_TEXT(card, 2, "delvipa6");
 828                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 829                         ipaddr->u.a6.pfxlen = 0;
 830                 }
 831                 ipaddr->type = QETH_IP_TYPE_VIPA;
 832         } else
 833                 return;
 834         if (!qeth_l3_delete_ip(card, ipaddr))
 835                 kfree(ipaddr);
 836         qeth_l3_set_ip_addr_list(card);
 837 }
 838
 839 /*
 840  * proxy ARP related functions
 841  */
 842 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 843               const u8 *addr)
 844 {
 845         struct qeth_ipaddr *ipaddr;
 846         unsigned long flags;
 847         int rc = 0;
 848
 849         ipaddr = qeth_l3_get_addr_buffer(proto);
 850         if (ipaddr) {
 851                 if (proto == QETH_PROT_IPV4) {
 852                         QETH_CARD_TEXT(card, 2, "addrxip4");
 853                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 854                         ipaddr->u.a4.mask = 0;
 855                 } else if (proto == QETH_PROT_IPV6) {
 856                         QETH_CARD_TEXT(card, 2, "addrxip6");
 857                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 858                         ipaddr->u.a6.pfxlen = 0;
 859                 }
 860                 ipaddr->type = QETH_IP_TYPE_RXIP;
 861                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 862                 ipaddr->del_flags = 0;
 863         } else
 864                 return -ENOMEM;
 865         spin_lock_irqsave(&card->ip_lock, flags);
 866         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 867             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 868                 rc = -EEXIST;
 869         spin_unlock_irqrestore(&card->ip_lock, flags);
 870         if (rc) {
 871                 kfree(ipaddr);
 872                 return rc;
 873         }
 874         if (!qeth_l3_add_ip(card, ipaddr))
 875                 kfree(ipaddr);
 876         qeth_l3_set_ip_addr_list(card);
 877         return 0;
 878 }
 879
 880 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 881                         const u8 *addr)
 882 {
 883         struct qeth_ipaddr *ipaddr;
 884
 885         ipaddr = qeth_l3_get_addr_buffer(proto);
 886         if (ipaddr) {
 887                 if (proto == QETH_PROT_IPV4) {
 888                         QETH_CARD_TEXT(card, 2, "addrxip4");
 889                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 890                         ipaddr->u.a4.mask = 0;
 891                 } else if (proto == QETH_PROT_IPV6) {
 892                         QETH_CARD_TEXT(card, 2, "addrxip6");
 893                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 894                         ipaddr->u.a6.pfxlen = 0;
 895                 }
 896                 ipaddr->type = QETH_IP_TYPE_RXIP;
 897         } else
 898                 return;
 899         if (!qeth_l3_delete_ip(card, ipaddr))
 900                 kfree(ipaddr);
 901         qeth_l3_set_ip_addr_list(card);
 902 }
 903
 904 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 905                                 struct qeth_ipaddr *addr)
 906 {
 907         char buf[50];
 908         int rc = 0;
 909         int cnt = 3;
 910
 911         if (addr->proto == QETH_PROT_IPV4) {
 912                 QETH_CARD_TEXT(card, 2, "setaddr4");
 913                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 914         } else if (addr->proto == QETH_PROT_IPV6) {
 915                 QETH_CARD_TEXT(card, 2, "setaddr6");
 916                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 917                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 918         } else {
 919                 QETH_CARD_TEXT(card, 2, "setaddr?");
 920                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 921         }
 922         do {
 923                 if (addr->is_multicast)
 924                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 925                 else
 926                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 927                                         addr->set_flags);
 928                 if (rc)
 929                         QETH_CARD_TEXT(card, 2, "failed");
 930         } while ((--cnt > 0) && rc);
 931         if (rc) {
 932                 QETH_CARD_TEXT(card, 2, "FAILED");
 933                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 934                 dev_warn(&card->gdev->dev,
 935                         "Registering IP address %s failed\n", buf);
 936         }
 937         return rc;
 938 }
 939
 940 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 941                                                 struct qeth_ipaddr *addr)
 942 {
 943         int rc = 0;
 944
 945         if (addr->proto == QETH_PROT_IPV4) {
 946                 QETH_CARD_TEXT(card, 2, "deladdr4");
 947                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 948         } else if (addr->proto == QETH_PROT_IPV6) {
 949                 QETH_CARD_TEXT(card, 2, "deladdr6");
 950                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 951                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 952         } else {
 953                 QETH_CARD_TEXT(card, 2, "deladdr?");
 954                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 955         }
 956         if (addr->is_multicast)
 957                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 958         else
 959                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 960                                         addr->del_flags);
 961         if (rc)
 962                 QETH_CARD_TEXT(card, 2, "failed");
 963
 964         return rc;
 965 }
 966
 967 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 968 {
 969         if (cast_type == RTN_MULTICAST)
 970                 return QETH_CAST_MULTICAST;
 971         if (cast_type == RTN_BROADCAST)
 972                 return QETH_CAST_BROADCAST;
 973         return QETH_CAST_UNICAST;
 974 }
 975
 976 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 977 {
 978         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 979         if (cast_type == RTN_MULTICAST)
 980                 return ct | QETH_CAST_MULTICAST;
 981         if (cast_type == RTN_ANYCAST)
 982                 return ct | QETH_CAST_ANYCAST;
 983         if (cast_type == RTN_BROADCAST)
 984                 return ct | QETH_CAST_BROADCAST;
 985         return ct | QETH_CAST_UNICAST;
 986 }
 987
 988 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 989 {
 990         int rc;
 991
 992         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 993
 994         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 995                 dev_info(&card->gdev->dev,
 996                         "set adapter parameters not supported.\n");
 997                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 998                 return 0;
 999         }
1000         rc = qeth_query_setadapterparms(card);
1001         if (rc) {
1002                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1003                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1004                 return rc;
1005         }
1006         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1007                 rc = qeth_setadpparms_change_macaddr(card);
1008                 if (rc)
1009                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1010                                 " address failed\n");
1011         }
1012
1013         return rc;
1014 }
1015
1016 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1017                         struct qeth_reply *reply, unsigned long data)
1018 {
1019         struct qeth_ipa_cmd *cmd;
1020
1021         QETH_CARD_TEXT(card, 4, "defadpcb");
1022
1023         cmd = (struct qeth_ipa_cmd *) data;
1024         if (cmd->hdr.return_code == 0) {
1025                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1026                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1027                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1028                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1029                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1030         }
1031         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1032             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1033                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1034                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1035         }
1036         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1037             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1038                 card->info.tx_csum_mask =
1039                         cmd->data.setassparms.data.flags_32bit;
1040                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1041         }
1042
1043         return 0;
1044 }
1045
1046 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1047         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1048         __u16 len, enum qeth_prot_versions prot)
1049 {
1050         struct qeth_cmd_buffer *iob;
1051         struct qeth_ipa_cmd *cmd;
1052
1053         QETH_CARD_TEXT(card, 4, "getasscm");
1054         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1055
1056         if (iob) {
1057                 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1058                 cmd->data.setassparms.hdr.assist_no = ipa_func;
1059                 cmd->data.setassparms.hdr.length = 8 + len;
1060                 cmd->data.setassparms.hdr.command_code = cmd_code;
1061                 cmd->data.setassparms.hdr.return_code = 0;
1062                 cmd->data.setassparms.hdr.seq_no = 0;
1063         }
1064
1065         return iob;
1066 }
1067
1068 static int qeth_l3_send_setassparms(struct qeth_card *card,
1069         struct qeth_cmd_buffer *iob, __u16 len, long data,
1070         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1071                 unsigned long),
1072         void *reply_param)
1073 {
1074         int rc;
1075         struct qeth_ipa_cmd *cmd;
1076
1077         QETH_CARD_TEXT(card, 4, "sendassp");
1078
1079         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1080         if (len <= sizeof(__u32))
1081                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1082         else   /* (len > sizeof(__u32)) */
1083                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1084
1085         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1086         return rc;
1087 }
1088
1089 #ifdef CONFIG_QETH_IPV6
1090 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1091                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1092 {
1093         int rc;
1094         struct qeth_cmd_buffer *iob;
1095
1096         QETH_CARD_TEXT(card, 4, "simassp6");
1097         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1098                                        0, QETH_PROT_IPV6);
1099         if (!iob)
1100                 return -ENOMEM;
1101         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1102                                    qeth_l3_default_setassparms_cb, NULL);
1103         return rc;
1104 }
1105 #endif
1106
1107 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1108                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1109 {
1110         int rc;
1111         int length = 0;
1112         struct qeth_cmd_buffer *iob;
1113
1114         QETH_CARD_TEXT(card, 4, "simassp4");
1115         if (data)
1116                 length = sizeof(__u32);
1117         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1118                                        length, QETH_PROT_IPV4);
1119         if (!iob)
1120                 return -ENOMEM;
1121         rc = qeth_l3_send_setassparms(card, iob, length, data,
1122                                    qeth_l3_default_setassparms_cb, NULL);
1123         return rc;
1124 }
1125
1126 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1127 {
1128         int rc;
1129
1130         QETH_CARD_TEXT(card, 3, "ipaarp");
1131
1132         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1133                 dev_info(&card->gdev->dev,
1134                         "ARP processing not supported on %s!\n",
1135                         QETH_CARD_IFNAME(card));
1136                 return 0;
1137         }
1138         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1139                                         IPA_CMD_ASS_START, 0);
1140         if (rc) {
1141                 dev_warn(&card->gdev->dev,
1142                         "Starting ARP processing support for %s failed\n",
1143                         QETH_CARD_IFNAME(card));
1144         }
1145         return rc;
1146 }
1147
1148 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1149 {
1150         int rc;
1151
1152         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1153
1154         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1155                 dev_info(&card->gdev->dev,
1156                         "Hardware IP fragmentation not supported on %s\n",
1157                         QETH_CARD_IFNAME(card));
1158                 return  -EOPNOTSUPP;
1159         }
1160
1161         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1162                                           IPA_CMD_ASS_START, 0);
1163         if (rc) {
1164                 dev_warn(&card->gdev->dev,
1165                         "Starting IP fragmentation support for %s failed\n",
1166                         QETH_CARD_IFNAME(card));
1167         } else
1168                 dev_info(&card->gdev->dev,
1169                         "Hardware IP fragmentation enabled \n");
1170         return rc;
1171 }
1172
1173 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1174 {
1175         int rc;
1176
1177         QETH_CARD_TEXT(card, 3, "stsrcmac");
1178
1179         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1180                 dev_info(&card->gdev->dev,
1181                         "Inbound source MAC-address not supported on %s\n",
1182                         QETH_CARD_IFNAME(card));
1183                 return -EOPNOTSUPP;
1184         }
1185
1186         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1187                                           IPA_CMD_ASS_START, 0);
1188         if (rc)
1189                 dev_warn(&card->gdev->dev,
1190                         "Starting source MAC-address support for %s failed\n",
1191                         QETH_CARD_IFNAME(card));
1192         return rc;
1193 }
1194
1195 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1196 {
1197         int rc = 0;
1198
1199         QETH_CARD_TEXT(card, 3, "strtvlan");
1200
1201         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1202                 dev_info(&card->gdev->dev,
1203                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1204                 return -EOPNOTSUPP;
1205         }
1206
1207         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1208                                           IPA_CMD_ASS_START, 0);
1209         if (rc) {
1210                 dev_warn(&card->gdev->dev,
1211                         "Starting VLAN support for %s failed\n",
1212                         QETH_CARD_IFNAME(card));
1213         } else {
1214                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1215         }
1216         return rc;
1217 }
1218
1219 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1220 {
1221         int rc;
1222
1223         QETH_CARD_TEXT(card, 3, "stmcast");
1224
1225         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1226                 dev_info(&card->gdev->dev,
1227                         "Multicast not supported on %s\n",
1228                         QETH_CARD_IFNAME(card));
1229                 return -EOPNOTSUPP;
1230         }
1231
1232         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1233                                           IPA_CMD_ASS_START, 0);
1234         if (rc) {
1235                 dev_warn(&card->gdev->dev,
1236                         "Starting multicast support for %s failed\n",
1237                         QETH_CARD_IFNAME(card));
1238         } else {
1239                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1240                 card->dev->flags |= IFF_MULTICAST;
1241         }
1242         return rc;
1243 }
1244
1245 #ifdef CONFIG_QETH_IPV6
1246 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1247 {
1248         int rc;
1249
1250         QETH_CARD_TEXT(card, 3, "softipv6");
1251
1252         if (card->info.type == QETH_CARD_TYPE_IQD)
1253                 goto out;
1254
1255         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1256         if (rc) {
1257                 dev_err(&card->gdev->dev,
1258                         "Activating IPv6 support for %s failed\n",
1259                         QETH_CARD_IFNAME(card));
1260                 return rc;
1261         }
1262         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1263                                           IPA_CMD_ASS_START, 3);
1264         if (rc) {
1265                 dev_err(&card->gdev->dev,
1266                         "Activating IPv6 support for %s failed\n",
1267                         QETH_CARD_IFNAME(card));
1268                 return rc;
1269         }
1270         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1271                                                IPA_CMD_ASS_START);
1272         if (rc) {
1273                 dev_err(&card->gdev->dev,
1274                         "Activating IPv6 support for %s failed\n",
1275                          QETH_CARD_IFNAME(card));
1276                 return rc;
1277         }
1278         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1279                                                IPA_CMD_ASS_START);
1280         if (rc) {
1281                 dev_warn(&card->gdev->dev,
1282                         "Enabling the passthrough mode for %s failed\n",
1283                         QETH_CARD_IFNAME(card));
1284                 return rc;
1285         }
1286 out:
1287         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1288         return 0;
1289 }
1290 #endif
1291
1292 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1293 {
1294         int rc = 0;
1295
1296         QETH_CARD_TEXT(card, 3, "strtipv6");
1297
1298         if (!qeth_is_supported(card, IPA_IPV6)) {
1299                 dev_info(&card->gdev->dev,
1300                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1301                 return 0;
1302         }
1303 #ifdef CONFIG_QETH_IPV6
1304         rc = qeth_l3_softsetup_ipv6(card);
1305 #endif
1306         return rc ;
1307 }
1308
1309 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1310 {
1311         int rc;
1312
1313         QETH_CARD_TEXT(card, 3, "stbrdcst");
1314         card->info.broadcast_capable = 0;
1315         if (!qeth_is_supported(card, IPA_FILTERING)) {
1316                 dev_info(&card->gdev->dev,
1317                         "Broadcast not supported on %s\n",
1318                         QETH_CARD_IFNAME(card));
1319                 rc = -EOPNOTSUPP;
1320                 goto out;
1321         }
1322         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1323                                           IPA_CMD_ASS_START, 0);
1324         if (rc) {
1325                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1326                         "%s failed\n", QETH_CARD_IFNAME(card));
1327                 goto out;
1328         }
1329
1330         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1331                                           IPA_CMD_ASS_CONFIGURE, 1);
1332         if (rc) {
1333                 dev_warn(&card->gdev->dev,
1334                         "Setting up broadcast filtering for %s failed\n",
1335                         QETH_CARD_IFNAME(card));
1336                 goto out;
1337         }
1338         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1339         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1340         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1341                                           IPA_CMD_ASS_ENABLE, 1);
1342         if (rc) {
1343                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1344                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1345                 goto out;
1346         }
1347         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1348 out:
1349         if (card->info.broadcast_capable)
1350                 card->dev->flags |= IFF_BROADCAST;
1351         else
1352                 card->dev->flags &= ~IFF_BROADCAST;
1353         return rc;
1354 }
1355
1356 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1357 {
1358         int rc;
1359
1360         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1361                                           IPA_CMD_ASS_START, 0);
1362         if (rc) {
1363                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1364                         "failed, using SW checksumming\n",
1365                         QETH_CARD_IFNAME(card));
1366                 return rc;
1367         }
1368         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1369                                           IPA_CMD_ASS_ENABLE,
1370                                           card->info.csum_mask);
1371         if (rc) {
1372                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1373                         "failed, using SW checksumming\n",
1374                         QETH_CARD_IFNAME(card));
1375                 return rc;
1376         }
1377         return 0;
1378 }
1379
1380 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1381 {
1382         int rc = 0;
1383
1384         if (on) {
1385                 rc = qeth_l3_send_checksum_command(card);
1386                 if (rc)
1387                         return -EIO;
1388                 dev_info(&card->gdev->dev,
1389                         "HW Checksumming (inbound) enabled\n");
1390         } else {
1391                 rc = qeth_l3_send_simple_setassparms(card,
1392                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1393                 if (rc)
1394                         return -EIO;
1395         }
1396
1397         return 0;
1398 }
1399
1400 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1401 {
1402         QETH_CARD_TEXT(card, 3, "strtcsum");
1403
1404         if (card->dev->features & NETIF_F_RXCSUM) {
1405                 rtnl_lock();
1406                 /* force set_features call */
1407                 card->dev->features &= ~NETIF_F_RXCSUM;
1408                 netdev_update_features(card->dev);
1409                 rtnl_unlock();
1410         }
1411         return 0;
1412 }
1413
1414 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1415 {
1416         int rc = 0;
1417
1418         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1419                 return rc;
1420         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1421                           IPA_CMD_ASS_START, 0);
1422         if (rc)
1423                 goto err_out;
1424         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1425                           IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1426         if (rc)
1427                 goto err_out;
1428         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1429         return rc;
1430 err_out:
1431         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1432                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1433         return rc;
1434 }
1435
1436 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1437 {
1438         int rc;
1439
1440         QETH_CARD_TEXT(card, 3, "sttso");
1441
1442         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1443                 dev_info(&card->gdev->dev,
1444                         "Outbound TSO not supported on %s\n",
1445                         QETH_CARD_IFNAME(card));
1446                 rc = -EOPNOTSUPP;
1447         } else {
1448                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1449                                                 IPA_CMD_ASS_START, 0);
1450                 if (rc)
1451                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1452                                 "segmentation offload for %s failed\n",
1453                                 QETH_CARD_IFNAME(card));
1454                 else
1455                         dev_info(&card->gdev->dev,
1456                                 "Outbound TSO enabled\n");
1457         }
1458         if (rc)
1459                 card->dev->features &= ~NETIF_F_TSO;
1460         return rc;
1461 }
1462
1463 static int qeth_l3_start_ipassists(struct qeth_card *card)
1464 {
1465         QETH_CARD_TEXT(card, 3, "strtipas");
1466
1467         if (qeth_set_access_ctrl_online(card, 0))
1468                 return -EIO;
1469         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1470         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1471         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1472         qeth_l3_start_ipa_vlan(card);           /* go on*/
1473         qeth_l3_start_ipa_multicast(card);              /* go on*/
1474         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1475         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1476         qeth_l3_start_ipa_checksum(card);               /* go on*/
1477         qeth_l3_start_ipa_tx_checksum(card);
1478         qeth_l3_start_ipa_tso(card);            /* go on*/
1479         return 0;
1480 }
1481
1482 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1483                 struct qeth_reply *reply, unsigned long data)
1484 {
1485         struct qeth_ipa_cmd *cmd;
1486
1487         cmd = (struct qeth_ipa_cmd *) data;
1488         if (cmd->hdr.return_code == 0)
1489                 memcpy(card->dev->dev_addr,
1490                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1491         else
1492                 eth_random_addr(card->dev->dev_addr);
1493
1494         return 0;
1495 }
1496
1497 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1498 {
1499         int rc = 0;
1500         struct qeth_cmd_buffer *iob;
1501         struct qeth_ipa_cmd *cmd;
1502
1503         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1504
1505         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1506                                      QETH_PROT_IPV6);
1507         if (!iob)
1508                 return -ENOMEM;
1509         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1510         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1511                         card->info.unique_id;
1512
1513         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1514                                 NULL);
1515         return rc;
1516 }
1517
1518 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1519                 struct qeth_reply *reply, unsigned long data)
1520 {
1521         struct qeth_ipa_cmd *cmd;
1522
1523         cmd = (struct qeth_ipa_cmd *) data;
1524         if (cmd->hdr.return_code == 0)
1525                 card->info.unique_id = *((__u16 *)
1526                                 &cmd->data.create_destroy_addr.unique_id[6]);
1527         else {
1528                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1529                                         UNIQUE_ID_NOT_BY_CARD;
1530                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1531                         "generate a unique ID\n");
1532         }
1533         return 0;
1534 }
1535
1536 static int qeth_l3_get_unique_id(struct qeth_card *card)
1537 {
1538         int rc = 0;
1539         struct qeth_cmd_buffer *iob;
1540         struct qeth_ipa_cmd *cmd;
1541
1542         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1543
1544         if (!qeth_is_supported(card, IPA_IPV6)) {
1545                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1546                                         UNIQUE_ID_NOT_BY_CARD;
1547                 return 0;
1548         }
1549
1550         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1551                                      QETH_PROT_IPV6);
1552         if (!iob)
1553                 return -ENOMEM;
1554         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1555         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1556                         card->info.unique_id;
1557
1558         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1559         return rc;
1560 }
1561
1562 static int
1563 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1564                             unsigned long data)
1565 {
1566         struct qeth_ipa_cmd        *cmd;
1567         __u16 rc;
1568
1569         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1570
1571         cmd = (struct qeth_ipa_cmd *)data;
1572         rc = cmd->hdr.return_code;
1573         if (rc)
1574                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1575         switch (cmd->data.diagass.action) {
1576         case QETH_DIAGS_CMD_TRACE_QUERY:
1577                 break;
1578         case QETH_DIAGS_CMD_TRACE_DISABLE:
1579                 switch (rc) {
1580                 case 0:
1581                 case IPA_RC_INVALID_SUBCMD:
1582                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1583                         dev_info(&card->gdev->dev, "The HiperSockets network "
1584                                 "traffic analyzer is deactivated\n");
1585                         break;
1586                 default:
1587                         break;
1588                 }
1589                 break;
1590         case QETH_DIAGS_CMD_TRACE_ENABLE:
1591                 switch (rc) {
1592                 case 0:
1593                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1594                         dev_info(&card->gdev->dev, "The HiperSockets network "
1595                                 "traffic analyzer is activated\n");
1596                         break;
1597                 case IPA_RC_HARDWARE_AUTH_ERROR:
1598                         dev_warn(&card->gdev->dev, "The device is not "
1599                                 "authorized to run as a HiperSockets network "
1600                                 "traffic analyzer\n");
1601                         break;
1602                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1603                         dev_warn(&card->gdev->dev, "A HiperSockets "
1604                                 "network traffic analyzer is already "
1605                                 "active in the HiperSockets LAN\n");
1606                         break;
1607                 default:
1608                         break;
1609                 }
1610                 break;
1611         default:
1612                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1613                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1614         }
1615
1616         return 0;
1617 }
1618
1619 static int
1620 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1621 {
1622         struct qeth_cmd_buffer *iob;
1623         struct qeth_ipa_cmd    *cmd;
1624
1625         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1626
1627         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1628         if (!iob)
1629                 return -ENOMEM;
1630         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1631         cmd->data.diagass.subcmd_len = 16;
1632         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1633         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1634         cmd->data.diagass.action = diags_cmd;
1635         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1636 }
1637
1638 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1639                                 struct net_device *dev)
1640 {
1641         ip_eth_mc_map(ipm, mac);
1642 }
1643
1644 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1645 {
1646         struct qeth_ipaddr *ipm;
1647         struct ip_mc_list *im4;
1648         char buf[MAX_ADDR_LEN];
1649
1650         QETH_CARD_TEXT(card, 4, "addmc");
1651         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1652              im4 = rcu_dereference(im4->next_rcu)) {
1653                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1654                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1655                 if (!ipm)
1656                         continue;
1657                 ipm->u.a4.addr = im4->multiaddr;
1658                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1659                 ipm->is_multicast = 1;
1660                 if (!qeth_l3_add_ip(card, ipm))
1661                         kfree(ipm);
1662         }
1663 }
1664
1665 /* called with rcu_read_lock */
1666 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1667 {
1668         struct in_device *in_dev;
1669         u16 vid;
1670
1671         QETH_CARD_TEXT(card, 4, "addmcvl");
1672         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1673                 return;
1674
1675         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1676                 struct net_device *netdev;
1677
1678                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1679                                               vid);
1680                 if (netdev == NULL ||
1681                     !(netdev->flags & IFF_UP))
1682                         continue;
1683                 in_dev = __in_dev_get_rcu(netdev);
1684                 if (!in_dev)
1685                         continue;
1686                 qeth_l3_add_mc(card, in_dev);
1687         }
1688 }
1689
1690 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1691 {
1692         struct in_device *in4_dev;
1693
1694         QETH_CARD_TEXT(card, 4, "chkmcv4");
1695         rcu_read_lock();
1696         in4_dev = __in_dev_get_rcu(card->dev);
1697         if (in4_dev == NULL)
1698                 goto unlock;
1699         qeth_l3_add_mc(card, in4_dev);
1700         qeth_l3_add_vlan_mc(card);
1701 unlock:
1702         rcu_read_unlock();
1703 }
1704
1705 #ifdef CONFIG_QETH_IPV6
1706 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1707 {
1708         struct qeth_ipaddr *ipm;
1709         struct ifmcaddr6 *im6;
1710         char buf[MAX_ADDR_LEN];
1711
1712         QETH_CARD_TEXT(card, 4, "addmc6");
1713         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1714                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1715                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1716                 if (!ipm)
1717                         continue;
1718                 ipm->is_multicast = 1;
1719                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1720                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1721                        sizeof(struct in6_addr));
1722                 if (!qeth_l3_add_ip(card, ipm))
1723                         kfree(ipm);
1724         }
1725 }
1726
1727 /* called with rcu_read_lock */
1728 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1729 {
1730         struct inet6_dev *in_dev;
1731         u16 vid;
1732
1733         QETH_CARD_TEXT(card, 4, "admc6vl");
1734         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1735                 return;
1736
1737         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1738                 struct net_device *netdev;
1739
1740                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1741                                               vid);
1742                 if (netdev == NULL ||
1743                     !(netdev->flags & IFF_UP))
1744                         continue;
1745                 in_dev = in6_dev_get(netdev);
1746                 if (!in_dev)
1747                         continue;
1748                 read_lock_bh(&in_dev->lock);
1749                 qeth_l3_add_mc6(card, in_dev);
1750                 read_unlock_bh(&in_dev->lock);
1751                 in6_dev_put(in_dev);
1752         }
1753 }
1754
1755 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1756 {
1757         struct inet6_dev *in6_dev;
1758
1759         QETH_CARD_TEXT(card, 4, "chkmcv6");
1760         if (!qeth_is_supported(card, IPA_IPV6))
1761                 return ;
1762         in6_dev = in6_dev_get(card->dev);
1763         if (in6_dev == NULL)
1764                 return;
1765         rcu_read_lock();
1766         read_lock_bh(&in6_dev->lock);
1767         qeth_l3_add_mc6(card, in6_dev);
1768         qeth_l3_add_vlan_mc6(card);
1769         read_unlock_bh(&in6_dev->lock);
1770         rcu_read_unlock();
1771         in6_dev_put(in6_dev);
1772 }
1773 #endif /* CONFIG_QETH_IPV6 */
1774
1775 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1776                         unsigned short vid)
1777 {
1778         struct in_device *in_dev;
1779         struct in_ifaddr *ifa;
1780         struct qeth_ipaddr *addr;
1781         struct net_device *netdev;
1782
1783         QETH_CARD_TEXT(card, 4, "frvaddr4");
1784
1785         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1786         if (!netdev)
1787                 return;
1788         in_dev = in_dev_get(netdev);
1789         if (!in_dev)
1790                 return;
1791         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1792                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1793                 if (addr) {
1794                         addr->u.a4.addr = ifa->ifa_address;
1795                         addr->u.a4.mask = ifa->ifa_mask;
1796                         addr->type = QETH_IP_TYPE_NORMAL;
1797                         if (!qeth_l3_delete_ip(card, addr))
1798                                 kfree(addr);
1799                 }
1800         }
1801         in_dev_put(in_dev);
1802 }
1803
1804 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1805                         unsigned short vid)
1806 {
1807 #ifdef CONFIG_QETH_IPV6
1808         struct inet6_dev *in6_dev;
1809         struct inet6_ifaddr *ifa;
1810         struct qeth_ipaddr *addr;
1811         struct net_device *netdev;
1812
1813         QETH_CARD_TEXT(card, 4, "frvaddr6");
1814
1815         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1816         if (!netdev)
1817                 return;
1818         in6_dev = in6_dev_get(netdev);
1819         if (!in6_dev)
1820                 return;
1821         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1822                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1823                 if (addr) {
1824                         memcpy(&addr->u.a6.addr, &ifa->addr,
1825                                sizeof(struct in6_addr));
1826                         addr->u.a6.pfxlen = ifa->prefix_len;
1827                         addr->type = QETH_IP_TYPE_NORMAL;
1828                         if (!qeth_l3_delete_ip(card, addr))
1829                                 kfree(addr);
1830                 }
1831         }
1832         in6_dev_put(in6_dev);
1833 #endif /* CONFIG_QETH_IPV6 */
1834 }
1835
1836 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1837                         unsigned short vid)
1838 {
1839         rcu_read_lock();
1840         qeth_l3_free_vlan_addresses4(card, vid);
1841         qeth_l3_free_vlan_addresses6(card, vid);
1842         rcu_read_unlock();
1843 }
1844
1845 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1846                                    __be16 proto, u16 vid)
1847 {
1848         struct qeth_card *card = dev->ml_priv;
1849
1850         set_bit(vid, card->active_vlans);
1851         return 0;
1852 }
1853
1854 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1855                                     __be16 proto, u16 vid)
1856 {
1857         struct qeth_card *card = dev->ml_priv;
1858         unsigned long flags;
1859
1860         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1861         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1862                 QETH_CARD_TEXT(card, 3, "kidREC");
1863                 return 0;
1864         }
1865         spin_lock_irqsave(&card->vlanlock, flags);
1866         /* unregister IP addresses of vlan device */
1867         qeth_l3_free_vlan_addresses(card, vid);
1868         clear_bit(vid, card->active_vlans);
1869         spin_unlock_irqrestore(&card->vlanlock, flags);
1870         qeth_l3_set_multicast_list(card->dev);
1871         return 0;
1872 }
1873
1874 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1875                         struct sk_buff *skb, struct qeth_hdr *hdr,
1876                         unsigned short *vlan_id)
1877 {
1878         __be16 prot;
1879         struct iphdr *ip_hdr;
1880         unsigned char tg_addr[MAX_ADDR_LEN];
1881         int is_vlan = 0;
1882
1883         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1884                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1885                               ETH_P_IP);
1886                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1887                 case QETH_CAST_MULTICAST:
1888                         switch (prot) {
1889 #ifdef CONFIG_QETH_IPV6
1890                         case __constant_htons(ETH_P_IPV6):
1891                                 ndisc_mc_map((struct in6_addr *)
1892                                      skb->data + 24,
1893                                      tg_addr, card->dev, 0);
1894                                 break;
1895 #endif
1896                         case __constant_htons(ETH_P_IP):
1897                                 ip_hdr = (struct iphdr *)skb->data;
1898                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1899                                 break;
1900                         default:
1901                                 memcpy(tg_addr, card->dev->broadcast,
1902                                         card->dev->addr_len);
1903                         }
1904                         card->stats.multicast++;
1905                         skb->pkt_type = PACKET_MULTICAST;
1906                         break;
1907                 case QETH_CAST_BROADCAST:
1908                         memcpy(tg_addr, card->dev->broadcast,
1909                                 card->dev->addr_len);
1910                         card->stats.multicast++;
1911                         skb->pkt_type = PACKET_BROADCAST;
1912                         break;
1913                 case QETH_CAST_UNICAST:
1914                 case QETH_CAST_ANYCAST:
1915                 case QETH_CAST_NOCAST:
1916                 default:
1917                         if (card->options.sniffer)
1918                                 skb->pkt_type = PACKET_OTHERHOST;
1919                         else
1920                                 skb->pkt_type = PACKET_HOST;
1921                         memcpy(tg_addr, card->dev->dev_addr,
1922                                 card->dev->addr_len);
1923                 }
1924                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1925                         card->dev->header_ops->create(skb, card->dev, prot,
1926                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1927                                 card->dev->addr_len);
1928                 else
1929                         card->dev->header_ops->create(skb, card->dev, prot,
1930                                 tg_addr, "FAKELL", card->dev->addr_len);
1931         }
1932
1933         skb->protocol = eth_type_trans(skb, card->dev);
1934
1935         if (hdr->hdr.l3.ext_flags &
1936             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1937                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1938                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1939                 is_vlan = 1;
1940         }
1941
1942         if (card->dev->features & NETIF_F_RXCSUM) {
1943                 if ((hdr->hdr.l3.ext_flags &
1944                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1945                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1946                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1947                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1948                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1949                 else
1950                         skb->ip_summed = CHECKSUM_NONE;
1951         } else
1952                 skb->ip_summed = CHECKSUM_NONE;
1953
1954         return is_vlan;
1955 }
1956
1957 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1958                                 int budget, int *done)
1959 {
1960         int work_done = 0;
1961         struct sk_buff *skb;
1962         struct qeth_hdr *hdr;
1963         __u16 vlan_tag = 0;
1964         int is_vlan;
1965         unsigned int len;
1966         __u16 magic;
1967
1968         *done = 0;
1969         WARN_ON_ONCE(!budget);
1970         while (budget) {
1971                 skb = qeth_core_get_next_skb(card,
1972                         &card->qdio.in_q->bufs[card->rx.b_index],
1973                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1974                 if (!skb) {
1975                         *done = 1;
1976                         break;
1977                 }
1978                 skb->dev = card->dev;
1979                 switch (hdr->hdr.l3.id) {
1980                 case QETH_HEADER_TYPE_LAYER3:
1981                         magic = *(__u16 *)skb->data;
1982                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1983                             (magic == ETH_P_AF_IUCV)) {
1984                                 skb->protocol = ETH_P_AF_IUCV;
1985                                 skb->pkt_type = PACKET_HOST;
1986                                 skb->mac_header = NET_SKB_PAD;
1987                                 skb->dev = card->dev;
1988                                 len = skb->len;
1989                                 card->dev->header_ops->create(skb, card->dev, 0,
1990                                         card->dev->dev_addr, "FAKELL",
1991                                         card->dev->addr_len);
1992                                 netif_receive_skb(skb);
1993                         } else {
1994                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1995                                                       &vlan_tag);
1996                                 len = skb->len;
1997                                 if (is_vlan && !card->options.sniffer)
1998                                         __vlan_hwaccel_put_tag(skb,
1999                                                 htons(ETH_P_8021Q), vlan_tag);
2000                                 napi_gro_receive(&card->napi, skb);
2001                         }
2002                         break;
2003                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2004                         skb->pkt_type = PACKET_HOST;
2005                         skb->protocol = eth_type_trans(skb, skb->dev);
2006                         len = skb->len;
2007                         netif_receive_skb(skb);
2008                         break;
2009                 default:
2010                         dev_kfree_skb_any(skb);
2011                         QETH_CARD_TEXT(card, 3, "inbunkno");
2012                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2013                         continue;
2014                 }
2015                 work_done++;
2016                 budget--;
2017                 card->stats.rx_packets++;
2018                 card->stats.rx_bytes += len;
2019         }
2020         return work_done;
2021 }
2022
2023 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2024 {
2025         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2026         int work_done = 0;
2027         struct qeth_qdio_buffer *buffer;
2028         int done;
2029         int new_budget = budget;
2030
2031         if (card->options.performance_stats) {
2032                 card->perf_stats.inbound_cnt++;
2033                 card->perf_stats.inbound_start_time = qeth_get_micros();
2034         }
2035
2036         while (1) {
2037                 if (!card->rx.b_count) {
2038                         card->rx.qdio_err = 0;
2039                         card->rx.b_count = qdio_get_next_buffers(
2040                                 card->data.ccwdev, 0, &card->rx.b_index,
2041                                 &card->rx.qdio_err);
2042                         if (card->rx.b_count <= 0) {
2043                                 card->rx.b_count = 0;
2044                                 break;
2045                         }
2046                         card->rx.b_element =
2047                                 &card->qdio.in_q->bufs[card->rx.b_index]
2048                                 .buffer->element[0];
2049                         card->rx.e_offset = 0;
2050                 }
2051
2052                 while (card->rx.b_count) {
2053                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2054                         if (!(card->rx.qdio_err &&
2055                             qeth_check_qdio_errors(card, buffer->buffer,
2056                             card->rx.qdio_err, "qinerr")))
2057                                 work_done += qeth_l3_process_inbound_buffer(
2058                                         card, new_budget, &done);
2059                         else
2060                                 done = 1;
2061
2062                         if (done) {
2063                                 if (card->options.performance_stats)
2064                                         card->perf_stats.bufs_rec++;
2065                                 qeth_put_buffer_pool_entry(card,
2066                                         buffer->pool_entry);
2067                                 qeth_queue_input_buffer(card, card->rx.b_index);
2068                                 card->rx.b_count--;
2069                                 if (card->rx.b_count) {
2070                                         card->rx.b_index =
2071                                                 (card->rx.b_index + 1) %
2072                                                 QDIO_MAX_BUFFERS_PER_Q;
2073                                         card->rx.b_element =
2074                                                 &card->qdio.in_q
2075                                                 ->bufs[card->rx.b_index]
2076                                                 .buffer->element[0];
2077                                         card->rx.e_offset = 0;
2078                                 }
2079                         }
2080
2081                         if (work_done >= budget)
2082                                 goto out;
2083                         else
2084                                 new_budget = budget - work_done;
2085                 }
2086         }
2087
2088         napi_complete(napi);
2089         if (qdio_start_irq(card->data.ccwdev, 0))
2090                 napi_schedule(&card->napi);
2091 out:
2092         if (card->options.performance_stats)
2093                 card->perf_stats.inbound_time += qeth_get_micros() -
2094                         card->perf_stats.inbound_start_time;
2095         return work_done;
2096 }
2097
2098 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2099                         struct qeth_card *card)
2100 {
2101         int rc = 0;
2102         u16 vid;
2103
2104         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2105                 struct net_device *netdev;
2106
2107                 rcu_read_lock();
2108                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
2109                                               vid);
2110                 rcu_read_unlock();
2111                 if (netdev == dev) {
2112                         rc = QETH_VLAN_CARD;
2113                         break;
2114                 }
2115         }
2116
2117         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2118                 return 0;
2119
2120         return rc;
2121 }
2122
2123 static int qeth_l3_verify_dev(struct net_device *dev)
2124 {
2125         struct qeth_card *card;
2126         unsigned long flags;
2127         int rc = 0;
2128
2129         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2130         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2131                 if (card->dev == dev) {
2132                         rc = QETH_REAL_CARD;
2133                         break;
2134                 }
2135                 rc = qeth_l3_verify_vlan_dev(dev, card);
2136                 if (rc)
2137                         break;
2138         }
2139         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2140
2141         return rc;
2142 }
2143
2144 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2145 {
2146         struct qeth_card *card = NULL;
2147         int rc;
2148
2149         rc = qeth_l3_verify_dev(dev);
2150         if (rc == QETH_REAL_CARD)
2151                 card = dev->ml_priv;
2152         else if (rc == QETH_VLAN_CARD)
2153                 card = vlan_dev_real_dev(dev)->ml_priv;
2154         if (card && card->options.layer2)
2155                 card = NULL;
2156         if (card)
2157                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2158         return card ;
2159 }
2160
2161 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2162 {
2163         int rc = 0;
2164
2165         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2166         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2167
2168         qeth_set_allowed_threads(card, 0, 1);
2169         if (card->options.sniffer &&
2170             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2171                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2172         if (card->read.state == CH_STATE_UP &&
2173             card->write.state == CH_STATE_UP &&
2174             (card->state == CARD_STATE_UP)) {
2175                 if (recovery_mode)
2176                         qeth_l3_stop(card->dev);
2177                 else {
2178                         rtnl_lock();
2179                         dev_close(card->dev);
2180                         rtnl_unlock();
2181                 }
2182                 card->state = CARD_STATE_SOFTSETUP;
2183         }
2184         if (card->state == CARD_STATE_SOFTSETUP) {
2185                 qeth_l3_clear_ip_list(card, 1);
2186                 qeth_clear_ipacmd_list(card);
2187                 card->state = CARD_STATE_HARDSETUP;
2188         }
2189         if (card->state == CARD_STATE_HARDSETUP) {
2190                 qeth_qdio_clear_card(card, 0);
2191                 qeth_clear_qdio_buffers(card);
2192                 qeth_clear_working_pool_list(card);
2193                 card->state = CARD_STATE_DOWN;
2194         }
2195         if (card->state == CARD_STATE_DOWN) {
2196                 qeth_clear_cmd_buffers(&card->read);
2197                 qeth_clear_cmd_buffers(&card->write);
2198         }
2199         return rc;
2200 }
2201
2202 /*
2203  * test for and Switch promiscuous mode (on or off)
2204  *  either for guestlan or HiperSocket Sniffer
2205  */
2206 static void
2207 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2208 {
2209         struct net_device *dev = card->dev;
2210
2211         if (((dev->flags & IFF_PROMISC) &&
2212              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2213             (!(dev->flags & IFF_PROMISC) &&
2214              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2215                 return;
2216
2217         if (card->info.guestlan) {              /* Guestlan trace */
2218                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2219                         qeth_setadp_promisc_mode(card);
2220         } else if (card->options.sniffer &&     /* HiperSockets trace */
2221                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2222                 if (dev->flags & IFF_PROMISC) {
2223                         QETH_CARD_TEXT(card, 3, "+promisc");
2224                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2225                 } else {
2226                         QETH_CARD_TEXT(card, 3, "-promisc");
2227                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2228                 }
2229         }
2230 }
2231
2232 static void qeth_l3_set_multicast_list(struct net_device *dev)
2233 {
2234         struct qeth_card *card = dev->ml_priv;
2235
2236         QETH_CARD_TEXT(card, 3, "setmulti");
2237         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2238             (card->state != CARD_STATE_UP))
2239                 return;
2240         if (!card->options.sniffer) {
2241                 qeth_l3_delete_mc_addresses(card);
2242                 qeth_l3_add_multicast_ipv4(card);
2243 #ifdef CONFIG_QETH_IPV6
2244                 qeth_l3_add_multicast_ipv6(card);
2245 #endif
2246                 qeth_l3_set_ip_addr_list(card);
2247                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2248                         return;
2249         }
2250         qeth_l3_handle_promisc_mode(card);
2251 }
2252
2253 static const char *qeth_l3_arp_get_error_cause(int *rc)
2254 {
2255         switch (*rc) {
2256         case QETH_IPA_ARP_RC_FAILED:
2257                 *rc = -EIO;
2258                 return "operation failed";
2259         case QETH_IPA_ARP_RC_NOTSUPP:
2260                 *rc = -EOPNOTSUPP;
2261                 return "operation not supported";
2262         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2263                 *rc = -EINVAL;
2264                 return "argument out of range";
2265         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2266                 *rc = -EOPNOTSUPP;
2267                 return "query operation not supported";
2268         case QETH_IPA_ARP_RC_Q_NO_DATA:
2269                 *rc = -ENOENT;
2270                 return "no query data available";
2271         default:
2272                 return "unknown error";
2273         }
2274 }
2275
2276 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2277 {
2278         int tmp;
2279         int rc;
2280
2281         QETH_CARD_TEXT(card, 3, "arpstnoe");
2282
2283         /*
2284          * currently GuestLAN only supports the ARP assist function
2285          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2286          * thus we say EOPNOTSUPP for this ARP function
2287          */
2288         if (card->info.guestlan)
2289                 return -EOPNOTSUPP;
2290         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2291                 return -EOPNOTSUPP;
2292         }
2293         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2294                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2295                                           no_entries);
2296         if (rc) {
2297                 tmp = rc;
2298                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2299                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2300                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2301         }
2302         return rc;
2303 }
2304
2305 static __u32 get_arp_entry_size(struct qeth_card *card,
2306                         struct qeth_arp_query_data *qdata,
2307                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2308 {
2309         __u32 rc;
2310         __u8 is_hsi;
2311
2312         is_hsi = qdata->reply_bits == 5;
2313         if (type->ip == QETHARP_IP_ADDR_V4) {
2314                 QETH_CARD_TEXT(card, 4, "arpev4");
2315                 if (strip_entries) {
2316                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2317                                 sizeof(struct qeth_arp_qi_entry7_short);
2318                 } else {
2319                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2320                                 sizeof(struct qeth_arp_qi_entry7);
2321                 }
2322         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2323                 QETH_CARD_TEXT(card, 4, "arpev6");
2324                 if (strip_entries) {
2325                         rc = is_hsi ?
2326                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2327                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2328                 } else {
2329                         rc = is_hsi ?
2330                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2331                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2332                 }
2333         } else {
2334                 QETH_CARD_TEXT(card, 4, "arpinv");
2335                 rc = 0;
2336         }
2337
2338         return rc;
2339 }
2340
2341 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2342 {
2343         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2344                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2345 }
2346
2347 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2348                 struct qeth_reply *reply, unsigned long data)
2349 {
2350         struct qeth_ipa_cmd *cmd;
2351         struct qeth_arp_query_data *qdata;
2352         struct qeth_arp_query_info *qinfo;
2353         int i;
2354         int e;
2355         int entrybytes_done;
2356         int stripped_bytes;
2357         __u8 do_strip_entries;
2358
2359         QETH_CARD_TEXT(card, 3, "arpquecb");
2360
2361         qinfo = (struct qeth_arp_query_info *) reply->param;
2362         cmd = (struct qeth_ipa_cmd *) data;
2363         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2364         if (cmd->hdr.return_code) {
2365                 QETH_CARD_TEXT(card, 4, "arpcberr");
2366                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2367                 return 0;
2368         }
2369         if (cmd->data.setassparms.hdr.return_code) {
2370                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2371                 QETH_CARD_TEXT(card, 4, "setaperr");
2372                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2373                 return 0;
2374         }
2375         qdata = &cmd->data.setassparms.data.query_arp;
2376         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2377
2378         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2379         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2380         entrybytes_done = 0;
2381         for (e = 0; e < qdata->no_entries; ++e) {
2382                 char *cur_entry;
2383                 __u32 esize;
2384                 struct qeth_arp_entrytype *etype;
2385
2386                 cur_entry = &qdata->data + entrybytes_done;
2387                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2388                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2389                         QETH_CARD_TEXT(card, 4, "pmis");
2390                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2391                         break;
2392                 }
2393                 esize = get_arp_entry_size(card, qdata, etype,
2394                         do_strip_entries);
2395                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2396                 if (!esize)
2397                         break;
2398
2399                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2400                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2401                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2402                         goto out_error;
2403                 }
2404
2405                 memcpy(qinfo->udata + qinfo->udata_offset,
2406                         &qdata->data + entrybytes_done + stripped_bytes,
2407                         esize);
2408                 entrybytes_done += esize + stripped_bytes;
2409                 qinfo->udata_offset += esize;
2410                 ++qinfo->no_entries;
2411         }
2412         /* check if all replies received ... */
2413         if (cmd->data.setassparms.hdr.seq_no <
2414             cmd->data.setassparms.hdr.number_of_replies)
2415                 return 1;
2416         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2417         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2418         /* keep STRIP_ENTRIES flag so the user program can distinguish
2419          * stripped entries from normal ones */
2420         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2421                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2422         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2423         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2424         return 0;
2425 out_error:
2426         i = 0;
2427         memcpy(qinfo->udata, &i, 4);
2428         return 0;
2429 }
2430
2431 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2432                 struct qeth_cmd_buffer *iob, int len,
2433                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2434                         unsigned long),
2435                 void *reply_param)
2436 {
2437         QETH_CARD_TEXT(card, 4, "sendarp");
2438
2439         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2440         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2441                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2442         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2443                                       reply_cb, reply_param);
2444 }
2445
2446 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2447         enum qeth_prot_versions prot,
2448         struct qeth_arp_query_info *qinfo)
2449 {
2450         struct qeth_cmd_buffer *iob;
2451         struct qeth_ipa_cmd *cmd;
2452         int tmp;
2453         int rc;
2454
2455         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2456
2457         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2458                         IPA_CMD_ASS_ARP_QUERY_INFO,
2459                         sizeof(struct qeth_arp_query_data) - sizeof(char),
2460                         prot);
2461         if (!iob)
2462                 return -ENOMEM;
2463         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2464         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2465         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2466         cmd->data.setassparms.data.query_arp.no_entries = 0;
2467         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2468                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2469                            qeth_l3_arp_query_cb, (void *)qinfo);
2470         if (rc) {
2471                 tmp = rc;
2472                 QETH_DBF_MESSAGE(2,
2473                         "Error while querying ARP cache on %s: %s "
2474                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2475                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2476         }
2477
2478         return rc;
2479 }
2480
2481 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2482 {
2483         struct qeth_arp_query_info qinfo = {0, };
2484         int rc;
2485
2486         QETH_CARD_TEXT(card, 3, "arpquery");
2487
2488         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2489                                IPA_ARP_PROCESSING)) {
2490                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2491                 rc = -EOPNOTSUPP;
2492                 goto out;
2493         }
2494         /* get size of userspace buffer and mask_bits -> 6 bytes */
2495         if (copy_from_user(&qinfo, udata, 6)) {
2496                 rc = -EFAULT;
2497                 goto out;
2498         }
2499         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2500         if (!qinfo.udata) {
2501                 rc = -ENOMEM;
2502                 goto out;
2503         }
2504         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2505         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2506         if (rc) {
2507                 if (copy_to_user(udata, qinfo.udata, 4))
2508                         rc = -EFAULT;
2509                         goto free_and_out;
2510         } else {
2511 #ifdef CONFIG_QETH_IPV6
2512                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2513                         /* fails in case of GuestLAN QDIO mode */
2514                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2515                                 &qinfo);
2516                 }
2517 #endif
2518                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2519                         QETH_CARD_TEXT(card, 4, "qactf");
2520                         rc = -EFAULT;
2521                         goto free_and_out;
2522                 }
2523                 QETH_CARD_TEXT(card, 4, "qacts");
2524         }
2525 free_and_out:
2526         kfree(qinfo.udata);
2527 out:
2528         return rc;
2529 }
2530
2531 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2532                                 struct qeth_arp_cache_entry *entry)
2533 {
2534         struct qeth_cmd_buffer *iob;
2535         char buf[16];
2536         int tmp;
2537         int rc;
2538
2539         QETH_CARD_TEXT(card, 3, "arpadent");
2540
2541         /*
2542          * currently GuestLAN only supports the ARP assist function
2543          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2544          * thus we say EOPNOTSUPP for this ARP function
2545          */
2546         if (card->info.guestlan)
2547                 return -EOPNOTSUPP;
2548         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2549                 return -EOPNOTSUPP;
2550         }
2551
2552         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2553                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2554                                        sizeof(struct qeth_arp_cache_entry),
2555                                        QETH_PROT_IPV4);
2556         if (!iob)
2557                 return -ENOMEM;
2558         rc = qeth_l3_send_setassparms(card, iob,
2559                                    sizeof(struct qeth_arp_cache_entry),
2560                                    (unsigned long) entry,
2561                                    qeth_l3_default_setassparms_cb, NULL);
2562         if (rc) {
2563                 tmp = rc;
2564                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2565                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2566                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2567                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2568         }
2569         return rc;
2570 }
2571
2572 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2573                                 struct qeth_arp_cache_entry *entry)
2574 {
2575         struct qeth_cmd_buffer *iob;
2576         char buf[16] = {0, };
2577         int tmp;
2578         int rc;
2579
2580         QETH_CARD_TEXT(card, 3, "arprment");
2581
2582         /*
2583          * currently GuestLAN only supports the ARP assist function
2584          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2585          * thus we say EOPNOTSUPP for this ARP function
2586          */
2587         if (card->info.guestlan)
2588                 return -EOPNOTSUPP;
2589         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2590                 return -EOPNOTSUPP;
2591         }
2592         memcpy(buf, entry, 12);
2593         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2594                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2595                                        12,
2596                                        QETH_PROT_IPV4);
2597         if (!iob)
2598                 return -ENOMEM;
2599         rc = qeth_l3_send_setassparms(card, iob,
2600                                    12, (unsigned long)buf,
2601                                    qeth_l3_default_setassparms_cb, NULL);
2602         if (rc) {
2603                 tmp = rc;
2604                 memset(buf, 0, 16);
2605                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2606                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2607                         " on %s: %s (0x%x/%d)\n", buf, 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_arp_flush_cache(struct qeth_card *card)
2614 {
2615         int rc;
2616         int tmp;
2617
2618         QETH_CARD_TEXT(card, 3, "arpflush");
2619
2620         /*
2621          * currently GuestLAN only supports the ARP assist function
2622          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2623          * thus we say EOPNOTSUPP for this ARP function
2624         */
2625         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2626                 return -EOPNOTSUPP;
2627         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2628                 return -EOPNOTSUPP;
2629         }
2630         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2631                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2632         if (rc) {
2633                 tmp = rc;
2634                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2635                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2636                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2637         }
2638         return rc;
2639 }
2640
2641 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2642 {
2643         struct qeth_card *card = dev->ml_priv;
2644         struct qeth_arp_cache_entry arp_entry;
2645         struct mii_ioctl_data *mii_data;
2646         int rc = 0;
2647
2648         if (!card)
2649                 return -ENODEV;
2650
2651         if (!qeth_card_hw_is_reachable(card))
2652                 return -ENODEV;
2653
2654         switch (cmd) {
2655         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2656                 if (!capable(CAP_NET_ADMIN)) {
2657                         rc = -EPERM;
2658                         break;
2659                 }
2660                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2661                 break;
2662         case SIOC_QETH_ARP_QUERY_INFO:
2663                 if (!capable(CAP_NET_ADMIN)) {
2664                         rc = -EPERM;
2665                         break;
2666                 }
2667                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2668                 break;
2669         case SIOC_QETH_ARP_ADD_ENTRY:
2670                 if (!capable(CAP_NET_ADMIN)) {
2671                         rc = -EPERM;
2672                         break;
2673                 }
2674                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2675                                    sizeof(struct qeth_arp_cache_entry)))
2676                         rc = -EFAULT;
2677                 else
2678                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2679                 break;
2680         case SIOC_QETH_ARP_REMOVE_ENTRY:
2681                 if (!capable(CAP_NET_ADMIN)) {
2682                         rc = -EPERM;
2683                         break;
2684                 }
2685                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2686                                    sizeof(struct qeth_arp_cache_entry)))
2687                         rc = -EFAULT;
2688                 else
2689                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2690                 break;
2691         case SIOC_QETH_ARP_FLUSH_CACHE:
2692                 if (!capable(CAP_NET_ADMIN)) {
2693                         rc = -EPERM;
2694                         break;
2695                 }
2696                 rc = qeth_l3_arp_flush_cache(card);
2697                 break;
2698         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2699                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2700                 break;
2701         case SIOC_QETH_GET_CARD_TYPE:
2702                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2703                      card->info.type == QETH_CARD_TYPE_OSX) &&
2704                     !card->info.guestlan)
2705                         return 1;
2706                 return 0;
2707                 break;
2708         case SIOCGMIIPHY:
2709                 mii_data = if_mii(rq);
2710                 mii_data->phy_id = 0;
2711                 break;
2712         case SIOCGMIIREG:
2713                 mii_data = if_mii(rq);
2714                 if (mii_data->phy_id != 0)
2715                         rc = -EINVAL;
2716                 else
2717                         mii_data->val_out = qeth_mdio_read(dev,
2718                                                         mii_data->phy_id,
2719                                                         mii_data->reg_num);
2720                 break;
2721         case SIOC_QETH_QUERY_OAT:
2722                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2723                 break;
2724         default:
2725                 rc = -EOPNOTSUPP;
2726         }
2727         if (rc)
2728                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2729         return rc;
2730 }
2731
2732 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2733 {
2734         int cast_type = RTN_UNSPEC;
2735         struct neighbour *n = NULL;
2736         struct dst_entry *dst;
2737
2738         rcu_read_lock();
2739         dst = skb_dst(skb);
2740         if (dst)
2741                 n = dst_neigh_lookup_skb(dst, skb);
2742         if (n) {
2743                 cast_type = n->type;
2744                 rcu_read_unlock();
2745                 neigh_release(n);
2746                 if ((cast_type == RTN_BROADCAST) ||
2747                     (cast_type == RTN_MULTICAST) ||
2748                     (cast_type == RTN_ANYCAST))
2749                         return cast_type;
2750                 else
2751                         return RTN_UNSPEC;
2752         }
2753         rcu_read_unlock();
2754
2755         /* try something else */
2756         if (skb->protocol == ETH_P_IPV6)
2757                 return (skb_network_header(skb)[24] == 0xff) ?
2758                                 RTN_MULTICAST : 0;
2759         else if (skb->protocol == ETH_P_IP)
2760                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2761                                 RTN_MULTICAST : 0;
2762         /* ... */
2763         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2764                 return RTN_BROADCAST;
2765         else {
2766                 u16 hdr_mac;
2767
2768                 hdr_mac = *((u16 *)skb->data);
2769                 /* tr multicast? */
2770                 switch (card->info.link_type) {
2771                 case QETH_LINK_TYPE_HSTR:
2772                 case QETH_LINK_TYPE_LANE_TR:
2773                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2774                             (hdr_mac == QETH_TR_MAC_C))
2775                                 return RTN_MULTICAST;
2776                         break;
2777                 /* eth or so multicast? */
2778                 default:
2779                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2780                             (hdr_mac == QETH_ETH_MAC_V6))
2781                                 return RTN_MULTICAST;
2782                 }
2783         }
2784         return cast_type;
2785 }
2786
2787 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2788                 struct qeth_hdr *hdr, struct sk_buff *skb)
2789 {
2790         char daddr[16];
2791         struct af_iucv_trans_hdr *iucv_hdr;
2792
2793         skb_pull(skb, 14);
2794         card->dev->header_ops->create(skb, card->dev, 0,
2795                                       card->dev->dev_addr, card->dev->dev_addr,
2796                                       card->dev->addr_len);
2797         skb_pull(skb, 14);
2798         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2799         memset(hdr, 0, sizeof(struct qeth_hdr));
2800         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2801         hdr->hdr.l3.ext_flags = 0;
2802         hdr->hdr.l3.length = skb->len;
2803         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2804         memset(daddr, 0, sizeof(daddr));
2805         daddr[0] = 0xfe;
2806         daddr[1] = 0x80;
2807         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2808         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2809 }
2810
2811 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2812                 struct sk_buff *skb, int ipv, int cast_type)
2813 {
2814         struct dst_entry *dst;
2815
2816         memset(hdr, 0, sizeof(struct qeth_hdr));
2817         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2818         hdr->hdr.l3.ext_flags = 0;
2819
2820         /*
2821          * before we're going to overwrite this location with next hop ip.
2822          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2823          */
2824         if (skb_vlan_tag_present(skb)) {
2825                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2826                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2827                 else
2828                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2829                 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2830         }
2831
2832         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2833
2834         rcu_read_lock();
2835         dst = skb_dst(skb);
2836         if (ipv == 4) {
2837                 struct rtable *rt = (struct rtable *) dst;
2838                 __be32 *pkey = &ip_hdr(skb)->daddr;
2839
2840                 if (rt->rt_gateway)
2841                         pkey = &rt->rt_gateway;
2842
2843                 /* IPv4 */
2844                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2845                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2846                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2847         } else if (ipv == 6) {
2848                 struct rt6_info *rt = (struct rt6_info *) dst;
2849                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2850
2851                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2852                         pkey = &rt->rt6i_gateway;
2853
2854                 /* IPv6 */
2855                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2856                 if (card->info.type == QETH_CARD_TYPE_IQD)
2857                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2858                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2859         } else {
2860                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2861                             skb->dev->broadcast, 6)) {
2862                         /* broadcast? */
2863                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2864                                                 QETH_HDR_PASSTHRU;
2865                 } else {
2866                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2867                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2868                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2869                 }
2870         }
2871         rcu_read_unlock();
2872 }
2873
2874 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2875                 struct qeth_hdr *hdr, struct sk_buff *skb)
2876 {
2877         struct iphdr *iph = ip_hdr(skb);
2878
2879         /* tcph->check contains already the pseudo hdr checksum
2880          * so just set the header flags
2881          */
2882         if (iph->protocol == IPPROTO_UDP)
2883                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2884         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2885                 QETH_HDR_EXT_CSUM_HDR_REQ;
2886         iph->check = 0;
2887         if (card->options.performance_stats)
2888                 card->perf_stats.tx_csum++;
2889 }
2890
2891 static void qeth_tso_fill_header(struct qeth_card *card,
2892                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2893 {
2894         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2895         struct tcphdr *tcph = tcp_hdr(skb);
2896         struct iphdr *iph = ip_hdr(skb);
2897         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2898
2899         /*fix header to TSO values ...*/
2900         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2901         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2902         /*set values which are fix for the first approach ...*/
2903         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2904         hdr->ext.imb_hdr_no  = 1;
2905         hdr->ext.hdr_type    = 1;
2906         hdr->ext.hdr_version = 1;
2907         hdr->ext.hdr_len     = 28;
2908         /*insert non-fix values */
2909         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2910         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2911         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2912                                        sizeof(struct qeth_hdr_tso));
2913         tcph->check = 0;
2914         if (skb->protocol == ETH_P_IPV6) {
2915                 ip6h->payload_len = 0;
2916                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2917                                                0, IPPROTO_TCP, 0);
2918         } else {
2919                 /*OSA want us to set these values ...*/
2920                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2921                                          0, IPPROTO_TCP, 0);
2922                 iph->tot_len = 0;
2923                 iph->check = 0;
2924         }
2925 }
2926
2927 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2928 {
2929         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2930                 tcp_hdr(skb)->doff * 4;
2931         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2932         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2933
2934         elements += qeth_get_elements_for_frags(skb);
2935
2936         return elements;
2937 }
2938
2939 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2940 {
2941         int rc;
2942         u16 *tag;
2943         struct qeth_hdr *hdr = NULL;
2944         int elements_needed = 0;
2945         int elems;
2946         struct qeth_card *card = dev->ml_priv;
2947         struct sk_buff *new_skb = NULL;
2948         int ipv = qeth_get_ip_version(skb);
2949         int cast_type = qeth_l3_get_cast_type(card, skb);
2950         struct qeth_qdio_out_q *queue =
2951                 card->qdio.out_qs[card->qdio.do_prio_queueing
2952                         || (cast_type && card->info.is_multicast_different) ?
2953                         qeth_get_priority_queue(card, skb, ipv, cast_type) :
2954                         card->qdio.default_out_queue];
2955         int tx_bytes = skb->len;
2956         bool large_send;
2957         int data_offset = -1;
2958         int nr_frags;
2959
2960         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2961              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2962               ((card->options.cq == QETH_CQ_ENABLED) &&
2963                (skb->protocol != ETH_P_AF_IUCV)))) ||
2964             card->options.sniffer)
2965                         goto tx_drop;
2966
2967         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2968                 card->stats.tx_carrier_errors++;
2969                 goto tx_drop;
2970         }
2971
2972         if ((cast_type == RTN_BROADCAST) &&
2973             (card->info.broadcast_capable == 0))
2974                 goto tx_drop;
2975
2976         if (card->options.performance_stats) {
2977                 card->perf_stats.outbound_cnt++;
2978                 card->perf_stats.outbound_start_time = qeth_get_micros();
2979         }
2980
2981         large_send = skb_is_gso(skb);
2982
2983         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2984             (skb_shinfo(skb)->nr_frags == 0)) {
2985                 new_skb = skb;
2986                 if (new_skb->protocol == ETH_P_AF_IUCV)
2987                         data_offset = 0;
2988                 else
2989                         data_offset = ETH_HLEN;
2990                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2991                 if (!hdr)
2992                         goto tx_drop;
2993                 elements_needed++;
2994         } else {
2995                 /* create a clone with writeable headroom */
2996                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2997                                         + VLAN_HLEN);
2998                 if (!new_skb)
2999                         goto tx_drop;
3000         }
3001
3002         if (card->info.type == QETH_CARD_TYPE_IQD) {
3003                 if (data_offset < 0)
3004                         skb_pull(new_skb, ETH_HLEN);
3005         } else {
3006                 if (ipv == 4) {
3007                         skb_pull(new_skb, ETH_HLEN);
3008                 }
3009
3010                 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
3011                         skb_push(new_skb, VLAN_HLEN);
3012                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
3013                         skb_copy_to_linear_data_offset(new_skb, 4,
3014                                 new_skb->data + 8, 4);
3015                         skb_copy_to_linear_data_offset(new_skb, 8,
3016                                 new_skb->data + 12, 4);
3017                         tag = (u16 *)(new_skb->data + 12);
3018                         *tag = __constant_htons(ETH_P_8021Q);
3019                         *(tag + 1) = htons(skb_vlan_tag_get(new_skb));
3020                 }
3021         }
3022
3023         netif_stop_queue(dev);
3024
3025         /* fix hardware limitation: as long as we do not have sbal
3026          * chaining we can not send long frag lists
3027          */
3028         if (large_send) {
3029                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3030                         if (skb_linearize(new_skb))
3031                                 goto tx_drop;
3032                         if (card->options.performance_stats)
3033                                 card->perf_stats.tx_lin++;
3034                 }
3035         }
3036
3037         if (large_send && (cast_type == RTN_UNSPEC)) {
3038                 hdr = (struct qeth_hdr *)skb_push(new_skb,
3039                                                 sizeof(struct qeth_hdr_tso));
3040                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3041                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3042                 qeth_tso_fill_header(card, hdr, new_skb);
3043                 elements_needed++;
3044         } else {
3045                 if (data_offset < 0) {
3046                         hdr = (struct qeth_hdr *)skb_push(new_skb,
3047                                                 sizeof(struct qeth_hdr));
3048                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3049                                                 cast_type);
3050                 } else {
3051                         if (new_skb->protocol == ETH_P_AF_IUCV)
3052                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3053                         else {
3054                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3055                                                         cast_type);
3056                                 hdr->hdr.l3.length = new_skb->len - data_offset;
3057                         }
3058                 }
3059
3060                 if (skb->ip_summed == CHECKSUM_PARTIAL)
3061                         qeth_l3_hdr_csum(card, hdr, new_skb);
3062         }
3063
3064         elems = qeth_get_elements_no(card, new_skb, elements_needed);
3065         if (!elems) {
3066                 if (data_offset >= 0)
3067                         kmem_cache_free(qeth_core_header_cache, hdr);
3068                 goto tx_drop;
3069         }
3070         elements_needed += elems;
3071         nr_frags = skb_shinfo(new_skb)->nr_frags;
3072
3073         if (card->info.type != QETH_CARD_TYPE_IQD) {
3074                 int len;
3075                 if (large_send)
3076                         len = ((unsigned long)tcp_hdr(new_skb) +
3077                                 tcp_hdr(new_skb)->doff * 4) -
3078                                 (unsigned long)new_skb->data;
3079                 else
3080                         len = sizeof(struct qeth_hdr_layer3);
3081
3082                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
3083                         goto tx_drop;
3084                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3085                                          elements_needed);
3086         } else
3087                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3088                                         elements_needed, data_offset, 0);
3089
3090         if (!rc) {
3091                 card->stats.tx_packets++;
3092                 card->stats.tx_bytes += tx_bytes;
3093                 if (new_skb != skb)
3094                         dev_kfree_skb_any(skb);
3095                 if (card->options.performance_stats) {
3096                         if (large_send) {
3097                                 card->perf_stats.large_send_bytes += tx_bytes;
3098                                 card->perf_stats.large_send_cnt++;
3099                         }
3100                         if (nr_frags) {
3101                                 card->perf_stats.sg_skbs_sent++;
3102                                 /* nr_frags + skb->data */
3103                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3104                         }
3105                 }
3106                 rc = NETDEV_TX_OK;
3107         } else {
3108                 if (data_offset >= 0)
3109                         kmem_cache_free(qeth_core_header_cache, hdr);
3110
3111                 if (rc == -EBUSY) {
3112                         if (new_skb != skb)
3113                                 dev_kfree_skb_any(new_skb);
3114                         return NETDEV_TX_BUSY;
3115                 } else
3116                         goto tx_drop;
3117         }
3118
3119         netif_wake_queue(dev);
3120         if (card->options.performance_stats)
3121                 card->perf_stats.outbound_time += qeth_get_micros() -
3122                         card->perf_stats.outbound_start_time;
3123         return rc;
3124
3125 tx_drop:
3126         card->stats.tx_dropped++;
3127         card->stats.tx_errors++;
3128         if ((new_skb != skb) && new_skb)
3129                 dev_kfree_skb_any(new_skb);
3130         dev_kfree_skb_any(skb);
3131         netif_wake_queue(dev);
3132         return NETDEV_TX_OK;
3133 }
3134
3135 static int __qeth_l3_open(struct net_device *dev)
3136 {
3137         struct qeth_card *card = dev->ml_priv;
3138         int rc = 0;
3139
3140         QETH_CARD_TEXT(card, 4, "qethopen");
3141         if (card->state == CARD_STATE_UP)
3142                 return rc;
3143         if (card->state != CARD_STATE_SOFTSETUP)
3144                 return -ENODEV;
3145         card->data.state = CH_STATE_UP;
3146         card->state = CARD_STATE_UP;
3147         netif_start_queue(dev);
3148
3149         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3150                 napi_enable(&card->napi);
3151                 napi_schedule(&card->napi);
3152         } else
3153                 rc = -EIO;
3154         return rc;
3155 }
3156
3157 static int qeth_l3_open(struct net_device *dev)
3158 {
3159         struct qeth_card *card = dev->ml_priv;
3160
3161         QETH_CARD_TEXT(card, 5, "qethope_");
3162         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3163                 QETH_CARD_TEXT(card, 3, "openREC");
3164                 return -ERESTARTSYS;
3165         }
3166         return __qeth_l3_open(dev);
3167 }
3168
3169 static int qeth_l3_stop(struct net_device *dev)
3170 {
3171         struct qeth_card *card = dev->ml_priv;
3172
3173         QETH_CARD_TEXT(card, 4, "qethstop");
3174         netif_tx_disable(dev);
3175         if (card->state == CARD_STATE_UP) {
3176                 card->state = CARD_STATE_SOFTSETUP;
3177                 napi_disable(&card->napi);
3178         }
3179         return 0;
3180 }
3181
3182 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3183         netdev_features_t features)
3184 {
3185         struct qeth_card *card = dev->ml_priv;
3186
3187         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3188                 features &= ~NETIF_F_IP_CSUM;
3189         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3190                 features &= ~NETIF_F_TSO;
3191         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3192                 features &= ~NETIF_F_RXCSUM;
3193
3194         return features;
3195 }
3196
3197 static int qeth_l3_set_features(struct net_device *dev,
3198         netdev_features_t features)
3199 {
3200         struct qeth_card *card = dev->ml_priv;
3201         netdev_features_t changed = dev->features ^ features;
3202
3203         if (!(changed & NETIF_F_RXCSUM))
3204                 return 0;
3205
3206         if (card->state == CARD_STATE_DOWN ||
3207             card->state == CARD_STATE_RECOVER)
3208                 return 0;
3209
3210         return qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0);
3211 }
3212
3213 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3214         .get_link = ethtool_op_get_link,
3215         .get_strings = qeth_core_get_strings,
3216         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3217         .get_sset_count = qeth_core_get_sset_count,
3218         .get_drvinfo = qeth_core_get_drvinfo,
3219         .get_settings = qeth_core_ethtool_get_settings,
3220 };
3221
3222 /*
3223  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3224  * NOARP on the netdevice is no option because it also turns off neighbor
3225  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3226  * arp resolution but we want the hard header (packet socket will work
3227  * e.g. tcpdump)
3228  */
3229 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3230 {
3231         n->nud_state = NUD_NOARP;
3232         memcpy(n->ha, "FAKELL", 6);
3233         n->output = n->ops->connected_output;
3234         return 0;
3235 }
3236
3237 static int
3238 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3239 {
3240         if (np->tbl->family == AF_INET)
3241                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3242
3243         return 0;
3244 }
3245
3246 static const struct net_device_ops qeth_l3_netdev_ops = {
3247         .ndo_open               = qeth_l3_open,
3248         .ndo_stop               = qeth_l3_stop,
3249         .ndo_get_stats          = qeth_get_stats,
3250         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3251         .ndo_validate_addr      = eth_validate_addr,
3252         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3253         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3254         .ndo_change_mtu         = qeth_change_mtu,
3255         .ndo_fix_features       = qeth_l3_fix_features,
3256         .ndo_set_features       = qeth_l3_set_features,
3257         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3258         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3259         .ndo_tx_timeout         = qeth_tx_timeout,
3260 };
3261
3262 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3263         .ndo_open               = qeth_l3_open,
3264         .ndo_stop               = qeth_l3_stop,
3265         .ndo_get_stats          = qeth_get_stats,
3266         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3267         .ndo_validate_addr      = eth_validate_addr,
3268         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3269         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3270         .ndo_change_mtu         = qeth_change_mtu,
3271         .ndo_fix_features       = qeth_l3_fix_features,
3272         .ndo_set_features       = qeth_l3_set_features,
3273         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3274         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3275         .ndo_tx_timeout         = qeth_tx_timeout,
3276         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3277 };
3278
3279 static int qeth_l3_setup_netdev(struct qeth_card *card)
3280 {
3281         int rc;
3282
3283         if (card->info.type == QETH_CARD_TYPE_OSD ||
3284             card->info.type == QETH_CARD_TYPE_OSX) {
3285                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3286                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3287                         pr_info("qeth_l3: ignoring TR device\n");
3288                         return -ENODEV;
3289                 } else {
3290                         card->dev = alloc_etherdev(0);
3291                         if (!card->dev)
3292                                 return -ENODEV;
3293                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3294
3295                         /*IPv6 address autoconfiguration stuff*/
3296                         qeth_l3_get_unique_id(card);
3297                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3298                                 card->dev->dev_id = card->info.unique_id &
3299                                                          0xffff;
3300                         if (!card->info.guestlan) {
3301                                 card->dev->hw_features = NETIF_F_SG |
3302                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3303                                         NETIF_F_TSO;
3304                                 card->dev->features = NETIF_F_RXCSUM;
3305                         }
3306                 }
3307         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3308                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
3309                                          ether_setup);
3310                 if (!card->dev)
3311                         return -ENODEV;
3312                 card->dev->flags |= IFF_NOARP;
3313                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3314                 rc = qeth_l3_iqd_read_initial_mac(card);
3315                 if (rc)
3316                         return rc;
3317                 if (card->options.hsuid[0])
3318                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3319         } else
3320                 return -ENODEV;
3321
3322         card->dev->ml_priv = card;
3323         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3324         card->dev->mtu = card->info.initial_mtu;
3325         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
3326         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
3327                                 NETIF_F_HW_VLAN_CTAG_RX |
3328                                 NETIF_F_HW_VLAN_CTAG_FILTER;
3329         netif_keep_dst(card->dev);
3330         card->dev->gso_max_size = 15 * PAGE_SIZE;
3331
3332         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3333         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3334         return register_netdev(card->dev);
3335 }
3336
3337 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3338 {
3339         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3340
3341         qeth_l3_create_device_attributes(&gdev->dev);
3342         card->options.layer2 = 0;
3343         card->info.hwtrap = 0;
3344         return 0;
3345 }
3346
3347 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3348 {
3349         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3350
3351         qeth_l3_remove_device_attributes(&cgdev->dev);
3352
3353         qeth_set_allowed_threads(card, 0, 1);
3354         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3355
3356         if (cgdev->state == CCWGROUP_ONLINE)
3357                 qeth_l3_set_offline(cgdev);
3358
3359         if (card->dev) {
3360                 unregister_netdev(card->dev);
3361                 card->dev = NULL;
3362         }
3363
3364         qeth_l3_clear_ip_list(card, 0);
3365         qeth_l3_clear_ipato_list(card);
3366         return;
3367 }
3368
3369 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3370 {
3371         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3372         int rc = 0;
3373         enum qeth_card_states recover_flag;
3374
3375         mutex_lock(&card->discipline_mutex);
3376         mutex_lock(&card->conf_mutex);
3377         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3378         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3379
3380         recover_flag = card->state;
3381         rc = qeth_core_hardsetup_card(card);
3382         if (rc) {
3383                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3384                 rc = -ENODEV;
3385                 goto out_remove;
3386         }
3387
3388         if (!card->dev && qeth_l3_setup_netdev(card)) {
3389                 rc = -ENODEV;
3390                 goto out_remove;
3391         }
3392
3393         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3394                 if (card->info.hwtrap &&
3395                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3396                         card->info.hwtrap = 0;
3397         } else
3398                 card->info.hwtrap = 0;
3399
3400         card->state = CARD_STATE_HARDSETUP;
3401         memset(&card->rx, 0, sizeof(struct qeth_rx));
3402         qeth_print_status_message(card);
3403
3404         /* softsetup */
3405         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3406
3407         rc = qeth_send_startlan(card);
3408         if (rc) {
3409                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3410                 if (rc == 0xe080) {
3411                         dev_warn(&card->gdev->dev,
3412                                 "The LAN is offline\n");
3413                         card->lan_online = 0;
3414                         goto contin;
3415                 }
3416                 rc = -ENODEV;
3417                 goto out_remove;
3418         } else
3419                 card->lan_online = 1;
3420
3421 contin:
3422         rc = qeth_l3_setadapter_parms(card);
3423         if (rc)
3424                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3425         if (!card->options.sniffer) {
3426                 rc = qeth_l3_start_ipassists(card);
3427                 if (rc) {
3428                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3429                         goto out_remove;
3430                 }
3431                 rc = qeth_l3_setrouting_v4(card);
3432                 if (rc)
3433                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3434                 rc = qeth_l3_setrouting_v6(card);
3435                 if (rc)
3436                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3437         }
3438         netif_tx_disable(card->dev);
3439
3440         rc = qeth_init_qdio_queues(card);
3441         if (rc) {
3442                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3443                 rc = -ENODEV;
3444                 goto out_remove;
3445         }
3446         card->state = CARD_STATE_SOFTSETUP;
3447
3448         qeth_set_allowed_threads(card, 0xffffffff, 0);
3449         qeth_l3_set_ip_addr_list(card);
3450         if (card->lan_online)
3451                 netif_carrier_on(card->dev);
3452         else
3453                 netif_carrier_off(card->dev);
3454         if (recover_flag == CARD_STATE_RECOVER) {
3455                 rtnl_lock();
3456                 if (recovery_mode)
3457                         __qeth_l3_open(card->dev);
3458                 else
3459                         dev_open(card->dev);
3460                 qeth_l3_set_multicast_list(card->dev);
3461                 rtnl_unlock();
3462         }
3463         qeth_trace_features(card);
3464         /* let user_space know that device is online */
3465         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3466         mutex_unlock(&card->conf_mutex);
3467         mutex_unlock(&card->discipline_mutex);
3468         return 0;
3469 out_remove:
3470         qeth_l3_stop_card(card, 0);
3471         ccw_device_set_offline(CARD_DDEV(card));
3472         ccw_device_set_offline(CARD_WDEV(card));
3473         ccw_device_set_offline(CARD_RDEV(card));
3474         qdio_free(CARD_DDEV(card));
3475         if (recover_flag == CARD_STATE_RECOVER)
3476                 card->state = CARD_STATE_RECOVER;
3477         else
3478                 card->state = CARD_STATE_DOWN;
3479         mutex_unlock(&card->conf_mutex);
3480         mutex_unlock(&card->discipline_mutex);
3481         return rc;
3482 }
3483
3484 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3485 {
3486         return __qeth_l3_set_online(gdev, 0);
3487 }
3488
3489 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3490                         int recovery_mode)
3491 {
3492         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3493         int rc = 0, rc2 = 0, rc3 = 0;
3494         enum qeth_card_states recover_flag;
3495
3496         mutex_lock(&card->discipline_mutex);
3497         mutex_lock(&card->conf_mutex);
3498         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3499         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3500
3501         if (card->dev && netif_carrier_ok(card->dev))
3502                 netif_carrier_off(card->dev);
3503         recover_flag = card->state;
3504         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3505                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3506                 card->info.hwtrap = 1;
3507         }
3508         qeth_l3_stop_card(card, recovery_mode);
3509         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3510                 rtnl_lock();
3511                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3512                 rtnl_unlock();
3513         }
3514         rc  = ccw_device_set_offline(CARD_DDEV(card));
3515         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3516         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3517         if (!rc)
3518                 rc = (rc2) ? rc2 : rc3;
3519         if (rc)
3520                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3521         qdio_free(CARD_DDEV(card));
3522         if (recover_flag == CARD_STATE_UP)
3523                 card->state = CARD_STATE_RECOVER;
3524         /* let user_space know that device is offline */
3525         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3526         mutex_unlock(&card->conf_mutex);
3527         mutex_unlock(&card->discipline_mutex);
3528         return 0;
3529 }
3530
3531 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3532 {
3533         return __qeth_l3_set_offline(cgdev, 0);
3534 }
3535
3536 static int qeth_l3_recover(void *ptr)
3537 {
3538         struct qeth_card *card;
3539         int rc = 0;
3540
3541         card = (struct qeth_card *) ptr;
3542         QETH_CARD_TEXT(card, 2, "recover1");
3543         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3544         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3545                 return 0;
3546         QETH_CARD_TEXT(card, 2, "recover2");
3547         dev_warn(&card->gdev->dev,
3548                 "A recovery process has been started for the device\n");
3549         qeth_set_recovery_task(card);
3550         __qeth_l3_set_offline(card->gdev, 1);
3551         rc = __qeth_l3_set_online(card->gdev, 1);
3552         if (!rc)
3553                 dev_info(&card->gdev->dev,
3554                         "Device successfully recovered!\n");
3555         else {
3556                 qeth_close_dev(card);
3557                 dev_warn(&card->gdev->dev, "The qeth device driver "
3558                                 "failed to recover an error on the device\n");
3559         }
3560         qeth_clear_recovery_task(card);
3561         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3562         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3563         return 0;
3564 }
3565
3566 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3567 {
3568         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3569         qeth_set_allowed_threads(card, 0, 1);
3570         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3571                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3572         qeth_qdio_clear_card(card, 0);
3573         qeth_clear_qdio_buffers(card);
3574         qdio_free(CARD_DDEV(card));
3575 }
3576
3577 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3578 {
3579         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3580
3581         if (card->dev)
3582                 netif_device_detach(card->dev);
3583         qeth_set_allowed_threads(card, 0, 1);
3584         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3585         if (gdev->state == CCWGROUP_OFFLINE)
3586                 return 0;
3587         if (card->state == CARD_STATE_UP) {
3588                 if (card->info.hwtrap)
3589                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3590                 __qeth_l3_set_offline(card->gdev, 1);
3591         } else
3592                 __qeth_l3_set_offline(card->gdev, 0);
3593         return 0;
3594 }
3595
3596 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3597 {
3598         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3599         int rc = 0;
3600
3601         if (gdev->state == CCWGROUP_OFFLINE)
3602                 goto out;
3603
3604         if (card->state == CARD_STATE_RECOVER) {
3605                 rc = __qeth_l3_set_online(card->gdev, 1);
3606                 if (rc) {
3607                         rtnl_lock();
3608                         dev_close(card->dev);
3609                         rtnl_unlock();
3610                 }
3611         } else
3612                 rc = __qeth_l3_set_online(card->gdev, 0);
3613 out:
3614         qeth_set_allowed_threads(card, 0xffffffff, 0);
3615         if (card->dev)
3616                 netif_device_attach(card->dev);
3617         if (rc)
3618                 dev_warn(&card->gdev->dev, "The qeth device driver "
3619                         "failed to recover an error on the device\n");
3620         return rc;
3621 }
3622
3623 /* Returns zero if the command is successfully "consumed" */
3624 static int qeth_l3_control_event(struct qeth_card *card,
3625                                         struct qeth_ipa_cmd *cmd)
3626 {
3627         return 1;
3628 }
3629
3630 struct qeth_discipline qeth_l3_discipline = {
3631         .start_poll = qeth_qdio_start_poll,
3632         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3633         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3634         .recover = qeth_l3_recover,
3635         .setup = qeth_l3_probe_device,
3636         .remove = qeth_l3_remove_device,
3637         .set_online = qeth_l3_set_online,
3638         .set_offline = qeth_l3_set_offline,
3639         .shutdown = qeth_l3_shutdown,
3640         .freeze = qeth_l3_pm_suspend,
3641         .thaw = qeth_l3_pm_resume,
3642         .restore = qeth_l3_pm_resume,
3643         .control_event_handler = qeth_l3_control_event,
3644 };
3645 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3646
3647 static int qeth_l3_ip_event(struct notifier_block *this,
3648                             unsigned long event, void *ptr)
3649 {
3650         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3651         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3652         struct qeth_ipaddr *addr;
3653         struct qeth_card *card;
3654
3655         if (dev_net(dev) != &init_net)
3656                 return NOTIFY_DONE;
3657
3658         card = qeth_l3_get_card_from_dev(dev);
3659         if (!card)
3660                 return NOTIFY_DONE;
3661         QETH_CARD_TEXT(card, 3, "ipevent");
3662
3663         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3664         if (addr != NULL) {
3665                 addr->u.a4.addr = ifa->ifa_address;
3666                 addr->u.a4.mask = ifa->ifa_mask;
3667                 addr->type = QETH_IP_TYPE_NORMAL;
3668         } else
3669                 goto out;
3670
3671         switch (event) {
3672         case NETDEV_UP:
3673                 if (!qeth_l3_add_ip(card, addr))
3674                         kfree(addr);
3675                 break;
3676         case NETDEV_DOWN:
3677                 if (!qeth_l3_delete_ip(card, addr))
3678                         kfree(addr);
3679                 break;
3680         default:
3681                 break;
3682         }
3683         qeth_l3_set_ip_addr_list(card);
3684 out:
3685         return NOTIFY_DONE;
3686 }
3687
3688 static struct notifier_block qeth_l3_ip_notifier = {
3689         qeth_l3_ip_event,
3690         NULL,
3691 };
3692
3693 #ifdef CONFIG_QETH_IPV6
3694 /**
3695  * IPv6 event handler
3696  */
3697 static int qeth_l3_ip6_event(struct notifier_block *this,
3698                              unsigned long event, void *ptr)
3699 {
3700         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3701         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3702         struct qeth_ipaddr *addr;
3703         struct qeth_card *card;
3704
3705         card = qeth_l3_get_card_from_dev(dev);
3706         if (!card)
3707                 return NOTIFY_DONE;
3708         QETH_CARD_TEXT(card, 3, "ip6event");
3709         if (!qeth_is_supported(card, IPA_IPV6))
3710                 return NOTIFY_DONE;
3711
3712         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3713         if (addr != NULL) {
3714                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3715                 addr->u.a6.pfxlen = ifa->prefix_len;
3716                 addr->type = QETH_IP_TYPE_NORMAL;
3717         } else
3718                 goto out;
3719
3720         switch (event) {
3721         case NETDEV_UP:
3722                 if (!qeth_l3_add_ip(card, addr))
3723                         kfree(addr);
3724                 break;
3725         case NETDEV_DOWN:
3726                 if (!qeth_l3_delete_ip(card, addr))
3727                         kfree(addr);
3728                 break;
3729         default:
3730                 break;
3731         }
3732         qeth_l3_set_ip_addr_list(card);
3733 out:
3734         return NOTIFY_DONE;
3735 }
3736
3737 static struct notifier_block qeth_l3_ip6_notifier = {
3738         qeth_l3_ip6_event,
3739         NULL,
3740 };
3741 #endif
3742
3743 static int qeth_l3_register_notifiers(void)
3744 {
3745         int rc;
3746
3747         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3748         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3749         if (rc)
3750                 return rc;
3751 #ifdef CONFIG_QETH_IPV6
3752         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3753         if (rc) {
3754                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3755                 return rc;
3756         }
3757 #else
3758         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3759 #endif
3760         return 0;
3761 }
3762
3763 static void qeth_l3_unregister_notifiers(void)
3764 {
3765
3766         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3767         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3768 #ifdef CONFIG_QETH_IPV6
3769         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3770 #endif /* QETH_IPV6 */
3771 }
3772
3773 static int __init qeth_l3_init(void)
3774 {
3775         int rc = 0;
3776
3777         pr_info("register layer 3 discipline\n");
3778         rc = qeth_l3_register_notifiers();
3779         return rc;
3780 }
3781
3782 static void __exit qeth_l3_exit(void)
3783 {
3784         qeth_l3_unregister_notifiers();
3785         pr_info("unregister layer 3 discipline\n");
3786 }
3787
3788 module_init(qeth_l3_init);
3789 module_exit(qeth_l3_exit);
3790 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3791 MODULE_DESCRIPTION("qeth layer 3 discipline");
3792 MODULE_LICENSE("GPL");