git.oblomov.eu Git - linux-2.6/blob - drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *  drivers/s390/net/qeth_l3_main.c
   3  *
   4  *    Copyright IBM Corp. 2007
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  11 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/mii.h>
  21 #include <linux/ip.h>
  22 #include <linux/ipv6.h>
  23 #include <linux/inetdevice.h>
  24 #include <linux/igmp.h>
  25
  26 #include <net/ip.h>
  27 #include <net/arp.h>
  28 #include <net/ip6_checksum.h>
  29
  30 #include "qeth_l3.h"
  31
  32 static int qeth_l3_set_offline(struct ccwgroup_device *);
  33 static int qeth_l3_recover(void *);
  34 static int qeth_l3_stop(struct net_device *);
  35 static void qeth_l3_set_multicast_list(struct net_device *);
  36 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  37 static int qeth_l3_register_addr_entry(struct qeth_card *,
  38                 struct qeth_ipaddr *);
  39 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  40                 struct qeth_ipaddr *);
  41 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  42 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  43
  44
  45 static int qeth_l3_isxdigit(char *buf)
  46 {
  47         while (*buf) {
  48                 if (!isxdigit(*buf++))
  49                         return 0;
  50         }
  51         return 1;
  52 }
  53
  54 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  55 {
  56         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
  57 }
  58
  59 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  60 {
  61         int count = 0, rc = 0;
  62         int in[4];
  63         char c;
  64
  65         rc = sscanf(buf, "%u.%u.%u.%u%c",
  66                     &in[0], &in[1], &in[2], &in[3], &c);
  67         if (rc != 4 && (rc != 5 || c != '\n'))
  68                 return -EINVAL;
  69         for (count = 0; count < 4; count++) {
  70                 if (in[count] > 255)
  71                         return -EINVAL;
  72                 addr[count] = in[count];
  73         }
  74         return 0;
  75 }
  76
  77 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  78 {
  79         sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
  80                      ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
  81                      addr[0], addr[1], addr[2], addr[3],
  82                      addr[4], addr[5], addr[6], addr[7],
  83                      addr[8], addr[9], addr[10], addr[11],
  84                      addr[12], addr[13], addr[14], addr[15]);
  85 }
  86
  87 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  88 {
  89         const char *end, *end_tmp, *start;
  90         __u16 *in;
  91         char num[5];
  92         int num2, cnt, out, found, save_cnt;
  93         unsigned short in_tmp[8] = {0, };
  94
  95         cnt = out = found = save_cnt = num2 = 0;
  96         end = start = buf;
  97         in = (__u16 *) addr;
  98         memset(in, 0, 16);
  99         while (*end) {
 100                 end = strchr(start, ':');
 101                 if (end == NULL) {
 102                         end = buf + strlen(buf);
 103                         end_tmp = strchr(start, '\n');
 104                         if (end_tmp != NULL)
 105                                 end = end_tmp;
 106                         out = 1;
 107                 }
 108                 if ((end - start)) {
 109                         memset(num, 0, 5);
 110                         if ((end - start) > 4)
 111                                 return -EINVAL;
 112                         memcpy(num, start, end - start);
 113                         if (!qeth_l3_isxdigit(num))
 114                                 return -EINVAL;
 115                         sscanf(start, "%x", &num2);
 116                         if (found)
 117                                 in_tmp[save_cnt++] = num2;
 118                         else
 119                                 in[cnt++] = num2;
 120                         if (out)
 121                                 break;
 122                 } else {
 123                         if (found)
 124                                 return -EINVAL;
 125                         found = 1;
 126                 }
 127                 start = ++end;
 128         }
 129         if (cnt + save_cnt > 8)
 130                 return -EINVAL;
 131         cnt = 7;
 132         while (save_cnt)
 133                 in[cnt--] = in_tmp[--save_cnt];
 134         return 0;
 135 }
 136
 137 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 138                                 char *buf)
 139 {
 140         if (proto == QETH_PROT_IPV4)
 141                 qeth_l3_ipaddr4_to_string(addr, buf);
 142         else if (proto == QETH_PROT_IPV6)
 143                 qeth_l3_ipaddr6_to_string(addr, buf);
 144 }
 145
 146 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 147                                 __u8 *addr)
 148 {
 149         if (proto == QETH_PROT_IPV4)
 150                 return qeth_l3_string_to_ipaddr4(buf, addr);
 151         else if (proto == QETH_PROT_IPV6)
 152                 return qeth_l3_string_to_ipaddr6(buf, addr);
 153         else
 154                 return -EINVAL;
 155 }
 156
 157 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 158 {
 159         int i, j;
 160         u8 octet;
 161
 162         for (i = 0; i < len; ++i) {
 163                 octet = addr[i];
 164                 for (j = 7; j >= 0; --j) {
 165                         bits[i*8 + j] = octet & 1;
 166                         octet >>= 1;
 167                 }
 168         }
 169 }
 170
 171 static int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 172                                                 struct qeth_ipaddr *addr)
 173 {
 174         struct qeth_ipato_entry *ipatoe;
 175         u8 addr_bits[128] = {0, };
 176         u8 ipatoe_bits[128] = {0, };
 177         int rc = 0;
 178
 179         if (!card->ipato.enabled)
 180                 return 0;
 181
 182         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 183                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 184         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 185                 if (addr->proto != ipatoe->proto)
 186                         continue;
 187                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 188                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 189                                           4 : 16);
 190                 if (addr->proto == QETH_PROT_IPV4)
 191                         rc = !memcmp(addr_bits, ipatoe_bits,
 192                                      min(32, ipatoe->mask_bits));
 193                 else
 194                         rc = !memcmp(addr_bits, ipatoe_bits,
 195                                      min(128, ipatoe->mask_bits));
 196                 if (rc)
 197                         break;
 198         }
 199         /* invert? */
 200         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 201                 rc = !rc;
 202         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 203                 rc = !rc;
 204
 205         return rc;
 206 }
 207
 208 /*
 209  * Add IP to be added to todo list. If there is already an "add todo"
 210  * in this list we just incremenent the reference count.
 211  * Returns 0 if we  just incremented reference count.
 212  */
 213 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
 214                                         struct qeth_ipaddr *addr, int add)
 215 {
 216         struct qeth_ipaddr *tmp, *t;
 217         int found = 0;
 218
 219         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
 220                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
 221                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
 222                         return 0;
 223                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
 224                     (addr->proto       == QETH_PROT_IPV4)     &&
 225                     (tmp->type         == addr->type)         &&
 226                     (tmp->is_multicast == addr->is_multicast) &&
 227                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
 228                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
 229                         found = 1;
 230                         break;
 231                 }
 232                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
 233                     (addr->proto       == QETH_PROT_IPV6)      &&
 234                     (tmp->type         == addr->type)          &&
 235                     (tmp->is_multicast == addr->is_multicast)  &&
 236                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
 237                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 238                             sizeof(struct in6_addr)) == 0)) {
 239                         found = 1;
 240                         break;
 241                 }
 242         }
 243         if (found) {
 244                 if (addr->users != 0)
 245                         tmp->users += addr->users;
 246                 else
 247                         tmp->users += add ? 1 : -1;
 248                 if (tmp->users == 0) {
 249                         list_del(&tmp->entry);
 250                         kfree(tmp);
 251                 }
 252                 return 0;
 253         } else {
 254                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
 255                         list_add(&addr->entry, card->ip_tbd_list);
 256                 else {
 257                         if (addr->users == 0)
 258                                 addr->users += add ? 1 : -1;
 259                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
 260                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 261                                 QETH_DBF_TEXT(TRACE, 2, "tkovaddr");
 262                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 263                         }
 264                         list_add_tail(&addr->entry, card->ip_tbd_list);
 265                 }
 266                 return 1;
 267         }
 268 }
 269
 270 static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 271 {
 272         unsigned long flags;
 273         int rc = 0;
 274
 275         QETH_DBF_TEXT(TRACE, 4, "delip");
 276
 277         if (addr->proto == QETH_PROT_IPV4)
 278                 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
 279         else {
 280                 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
 281                 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 282         }
 283         spin_lock_irqsave(&card->ip_lock, flags);
 284         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
 285         spin_unlock_irqrestore(&card->ip_lock, flags);
 286         return rc;
 287 }
 288
 289 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 290 {
 291         unsigned long flags;
 292         int rc = 0;
 293
 294         QETH_DBF_TEXT(TRACE, 4, "addip");
 295         if (addr->proto == QETH_PROT_IPV4)
 296                 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
 297         else {
 298                 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
 299                 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 300         }
 301         spin_lock_irqsave(&card->ip_lock, flags);
 302         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
 303         spin_unlock_irqrestore(&card->ip_lock, flags);
 304         return rc;
 305 }
 306
 307
 308 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 309                                 enum qeth_prot_versions prot)
 310 {
 311         struct qeth_ipaddr *addr;
 312
 313         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 314         if (addr == NULL) {
 315                 return NULL;
 316         }
 317         addr->type = QETH_IP_TYPE_NORMAL;
 318         addr->proto = prot;
 319         return addr;
 320 }
 321
 322 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
 323 {
 324         struct qeth_ipaddr *iptodo;
 325         unsigned long flags;
 326
 327         QETH_DBF_TEXT(TRACE, 4, "delmc");
 328         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
 329         if (!iptodo) {
 330                 QETH_DBF_TEXT(TRACE, 2, "dmcnomem");
 331                 return;
 332         }
 333         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
 334         spin_lock_irqsave(&card->ip_lock, flags);
 335         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
 336                 kfree(iptodo);
 337         spin_unlock_irqrestore(&card->ip_lock, flags);
 338 }
 339
 340 /*
 341  * Add/remove address to/from card's ip list, i.e. try to add or remove
 342  * reference to/from an IP address that is already registered on the card.
 343  * Returns:
 344  *      0  address was on card and its reference count has been adjusted,
 345  *         but is still > 0, so nothing has to be done
 346  *         also returns 0 if card was not on card and the todo was to delete
 347  *         the address -> there is also nothing to be done
 348  *      1  address was not on card and the todo is to add it to the card's ip
 349  *         list
 350  *      -1 address was on card and its reference count has been decremented
 351  *         to <= 0 by the todo -> address must be removed from card
 352  */
 353 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
 354                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
 355 {
 356         struct qeth_ipaddr *addr;
 357         int found = 0;
 358
 359         list_for_each_entry(addr, &card->ip_list, entry) {
 360                 if ((addr->proto == QETH_PROT_IPV4) &&
 361                     (todo->proto == QETH_PROT_IPV4) &&
 362                     (addr->type == todo->type) &&
 363                     (addr->u.a4.addr == todo->u.a4.addr) &&
 364                     (addr->u.a4.mask == todo->u.a4.mask)) {
 365                         found = 1;
 366                         break;
 367                 }
 368                 if ((addr->proto == QETH_PROT_IPV6) &&
 369                     (todo->proto == QETH_PROT_IPV6) &&
 370                     (addr->type == todo->type) &&
 371                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
 372                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
 373                             sizeof(struct in6_addr)) == 0)) {
 374                         found = 1;
 375                         break;
 376                 }
 377         }
 378         if (found) {
 379                 addr->users += todo->users;
 380                 if (addr->users <= 0) {
 381                         *__addr = addr;
 382                         return -1;
 383                 } else {
 384                         /* for VIPA and RXIP limit refcount to 1 */
 385                         if (addr->type != QETH_IP_TYPE_NORMAL)
 386                                 addr->users = 1;
 387                         return 0;
 388                 }
 389         }
 390         if (todo->users > 0) {
 391                 /* for VIPA and RXIP limit refcount to 1 */
 392                 if (todo->type != QETH_IP_TYPE_NORMAL)
 393                         todo->users = 1;
 394                 return 1;
 395         } else
 396                 return 0;
 397 }
 398
 399 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
 400                                         unsigned long *flags)
 401 {
 402         struct list_head fail_list;
 403         struct qeth_ipaddr *addr, *tmp;
 404         int rc;
 405
 406         INIT_LIST_HEAD(&fail_list);
 407 again:
 408         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
 409                 if (addr->is_multicast) {
 410                         list_del(&addr->entry);
 411                         spin_unlock_irqrestore(&card->ip_lock, *flags);
 412                         rc = qeth_l3_deregister_addr_entry(card, addr);
 413                         spin_lock_irqsave(&card->ip_lock, *flags);
 414                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
 415                                 kfree(addr);
 416                         else
 417                                 list_add_tail(&addr->entry, &fail_list);
 418                         goto again;
 419                 }
 420         }
 421         list_splice(&fail_list, &card->ip_list);
 422 }
 423
 424 static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
 425 {
 426         struct list_head *tbd_list;
 427         struct qeth_ipaddr *todo, *addr;
 428         unsigned long flags;
 429         int rc;
 430
 431         QETH_DBF_TEXT(TRACE, 2, "sdiplist");
 432         QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
 433
 434         spin_lock_irqsave(&card->ip_lock, flags);
 435         tbd_list = card->ip_tbd_list;
 436         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
 437         if (!card->ip_tbd_list) {
 438                 QETH_DBF_TEXT(TRACE, 0, "silnomem");
 439                 card->ip_tbd_list = tbd_list;
 440                 spin_unlock_irqrestore(&card->ip_lock, flags);
 441                 return;
 442         } else
 443                 INIT_LIST_HEAD(card->ip_tbd_list);
 444
 445         while (!list_empty(tbd_list)) {
 446                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
 447                 list_del(&todo->entry);
 448                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
 449                         __qeth_l3_delete_all_mc(card, &flags);
 450                         kfree(todo);
 451                         continue;
 452                 }
 453                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
 454                 if (rc == 0) {
 455                         /* nothing to be done; only adjusted refcount */
 456                         kfree(todo);
 457                 } else if (rc == 1) {
 458                         /* new entry to be added to on-card list */
 459                         spin_unlock_irqrestore(&card->ip_lock, flags);
 460                         rc = qeth_l3_register_addr_entry(card, todo);
 461                         spin_lock_irqsave(&card->ip_lock, flags);
 462                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
 463                                 list_add_tail(&todo->entry, &card->ip_list);
 464                         else
 465                                 kfree(todo);
 466                 } else if (rc == -1) {
 467                         /* on-card entry to be removed */
 468                         list_del_init(&addr->entry);
 469                         spin_unlock_irqrestore(&card->ip_lock, flags);
 470                         rc = qeth_l3_deregister_addr_entry(card, addr);
 471                         spin_lock_irqsave(&card->ip_lock, flags);
 472                         if (!rc || (rc == IPA_RC_PRIMARY_ALREADY_DEFINED))
 473                                 kfree(addr);
 474                         else
 475                                 list_add_tail(&addr->entry, &card->ip_list);
 476                         kfree(todo);
 477                 }
 478         }
 479         spin_unlock_irqrestore(&card->ip_lock, flags);
 480         kfree(tbd_list);
 481 }
 482
 483 static void qeth_l3_clear_ip_list(struct qeth_card *card, int clean,
 484                                         int recover)
 485 {
 486         struct qeth_ipaddr *addr, *tmp;
 487         unsigned long flags;
 488
 489         QETH_DBF_TEXT(TRACE, 4, "clearip");
 490         spin_lock_irqsave(&card->ip_lock, flags);
 491         /* clear todo list */
 492         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
 493                 list_del(&addr->entry);
 494                 kfree(addr);
 495         }
 496
 497         while (!list_empty(&card->ip_list)) {
 498                 addr = list_entry(card->ip_list.next,
 499                                   struct qeth_ipaddr, entry);
 500                 list_del_init(&addr->entry);
 501                 if (clean) {
 502                         spin_unlock_irqrestore(&card->ip_lock, flags);
 503                         qeth_l3_deregister_addr_entry(card, addr);
 504                         spin_lock_irqsave(&card->ip_lock, flags);
 505                 }
 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_DBF_TEXT(TRACE, 4, "setdelmc");
 548
 549         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 550         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 551         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 552         if (addr->proto == QETH_PROT_IPV6)
 553                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 554                        sizeof(struct in6_addr));
 555         else
 556                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 557
 558         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 559
 560         return rc;
 561 }
 562
 563 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 564 {
 565         int i, j;
 566         for (i = 0; i < 16; i++) {
 567                 j = (len) - (i * 8);
 568                 if (j >= 8)
 569                         netmask[i] = 0xff;
 570                 else if (j > 0)
 571                         netmask[i] = (u8)(0xFF00 >> j);
 572                 else
 573                         netmask[i] = 0;
 574         }
 575 }
 576
 577 static int qeth_l3_send_setdelip(struct qeth_card *card,
 578                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 579 {
 580         int rc;
 581         struct qeth_cmd_buffer *iob;
 582         struct qeth_ipa_cmd *cmd;
 583         __u8 netmask[16];
 584
 585         QETH_DBF_TEXT(TRACE, 4, "setdelip");
 586         QETH_DBF_TEXT_(TRACE, 4, "flags%02X", flags);
 587
 588         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 589         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 590         if (addr->proto == QETH_PROT_IPV6) {
 591                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 592                        sizeof(struct in6_addr));
 593                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 594                 memcpy(cmd->data.setdelip6.mask, netmask,
 595                        sizeof(struct in6_addr));
 596                 cmd->data.setdelip6.flags = flags;
 597         } else {
 598                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 599                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 600                 cmd->data.setdelip4.flags = flags;
 601         }
 602
 603         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 604
 605         return rc;
 606 }
 607
 608 static int qeth_l3_send_setrouting(struct qeth_card *card,
 609         enum qeth_routing_types type, enum qeth_prot_versions prot)
 610 {
 611         int rc;
 612         struct qeth_ipa_cmd *cmd;
 613         struct qeth_cmd_buffer *iob;
 614
 615         QETH_DBF_TEXT(TRACE, 4, "setroutg");
 616         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 617         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 618         cmd->data.setrtg.type = (type);
 619         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 620
 621         return rc;
 622 }
 623
 624 static void qeth_l3_correct_routing_type(struct qeth_card *card,
 625                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 626 {
 627         if (card->info.type == QETH_CARD_TYPE_IQD) {
 628                 switch (*type) {
 629                 case NO_ROUTER:
 630                 case PRIMARY_CONNECTOR:
 631                 case SECONDARY_CONNECTOR:
 632                 case MULTICAST_ROUTER:
 633                         return;
 634                 default:
 635                         goto out_inval;
 636                 }
 637         } else {
 638                 switch (*type) {
 639                 case NO_ROUTER:
 640                 case PRIMARY_ROUTER:
 641                 case SECONDARY_ROUTER:
 642                         return;
 643                 case MULTICAST_ROUTER:
 644                         if (qeth_is_ipafunc_supported(card, prot,
 645                                                       IPA_OSA_MC_ROUTER))
 646                                 return;
 647                 default:
 648                         goto out_inval;
 649                 }
 650         }
 651 out_inval:
 652         *type = NO_ROUTER;
 653 }
 654
 655 int qeth_l3_setrouting_v4(struct qeth_card *card)
 656 {
 657         int rc;
 658
 659         QETH_DBF_TEXT(TRACE, 3, "setrtg4");
 660
 661         qeth_l3_correct_routing_type(card, &card->options.route4.type,
 662                                   QETH_PROT_IPV4);
 663
 664         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 665                                   QETH_PROT_IPV4);
 666         if (rc) {
 667                 card->options.route4.type = NO_ROUTER;
 668                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 669                         " on %s. Type set to 'no router'.\n", rc,
 670                         QETH_CARD_IFNAME(card));
 671         }
 672         return rc;
 673 }
 674
 675 int qeth_l3_setrouting_v6(struct qeth_card *card)
 676 {
 677         int rc = 0;
 678
 679         QETH_DBF_TEXT(TRACE, 3, "setrtg6");
 680 #ifdef CONFIG_QETH_IPV6
 681
 682         if (!qeth_is_supported(card, IPA_IPV6))
 683                 return 0;
 684         qeth_l3_correct_routing_type(card, &card->options.route6.type,
 685                                   QETH_PROT_IPV6);
 686
 687         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 688                                   QETH_PROT_IPV6);
 689         if (rc) {
 690                 card->options.route6.type = NO_ROUTER;
 691                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 692                         " on %s. Type set to 'no router'.\n", rc,
 693                         QETH_CARD_IFNAME(card));
 694         }
 695 #endif
 696         return rc;
 697 }
 698
 699 /*
 700  * IP address takeover related functions
 701  */
 702 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 703 {
 704
 705         struct qeth_ipato_entry *ipatoe, *tmp;
 706         unsigned long flags;
 707
 708         spin_lock_irqsave(&card->ip_lock, flags);
 709         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 710                 list_del(&ipatoe->entry);
 711                 kfree(ipatoe);
 712         }
 713         spin_unlock_irqrestore(&card->ip_lock, flags);
 714 }
 715
 716 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 717                                 struct qeth_ipato_entry *new)
 718 {
 719         struct qeth_ipato_entry *ipatoe;
 720         unsigned long flags;
 721         int rc = 0;
 722
 723         QETH_DBF_TEXT(TRACE, 2, "addipato");
 724         spin_lock_irqsave(&card->ip_lock, flags);
 725         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 726                 if (ipatoe->proto != new->proto)
 727                         continue;
 728                 if (!memcmp(ipatoe->addr, new->addr,
 729                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 730                     (ipatoe->mask_bits == new->mask_bits)) {
 731                         rc = -EEXIST;
 732                         break;
 733                 }
 734         }
 735         if (!rc)
 736                 list_add_tail(&new->entry, &card->ipato.entries);
 737
 738         spin_unlock_irqrestore(&card->ip_lock, flags);
 739         return rc;
 740 }
 741
 742 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 743                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 744 {
 745         struct qeth_ipato_entry *ipatoe, *tmp;
 746         unsigned long flags;
 747
 748         QETH_DBF_TEXT(TRACE, 2, "delipato");
 749         spin_lock_irqsave(&card->ip_lock, flags);
 750         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 751                 if (ipatoe->proto != proto)
 752                         continue;
 753                 if (!memcmp(ipatoe->addr, addr,
 754                             (proto == QETH_PROT_IPV4)? 4:16) &&
 755                     (ipatoe->mask_bits == mask_bits)) {
 756                         list_del(&ipatoe->entry);
 757                         kfree(ipatoe);
 758                 }
 759         }
 760         spin_unlock_irqrestore(&card->ip_lock, flags);
 761 }
 762
 763 /*
 764  * VIPA related functions
 765  */
 766 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 767               const u8 *addr)
 768 {
 769         struct qeth_ipaddr *ipaddr;
 770         unsigned long flags;
 771         int rc = 0;
 772
 773         ipaddr = qeth_l3_get_addr_buffer(proto);
 774         if (ipaddr) {
 775                 if (proto == QETH_PROT_IPV4) {
 776                         QETH_DBF_TEXT(TRACE, 2, "addvipa4");
 777                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 778                         ipaddr->u.a4.mask = 0;
 779                 } else if (proto == QETH_PROT_IPV6) {
 780                         QETH_DBF_TEXT(TRACE, 2, "addvipa6");
 781                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 782                         ipaddr->u.a6.pfxlen = 0;
 783                 }
 784                 ipaddr->type = QETH_IP_TYPE_VIPA;
 785                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 786                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 787         } else
 788                 return -ENOMEM;
 789         spin_lock_irqsave(&card->ip_lock, flags);
 790         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 791             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 792                 rc = -EEXIST;
 793         spin_unlock_irqrestore(&card->ip_lock, flags);
 794         if (rc) {
 795                 return rc;
 796         }
 797         if (!qeth_l3_add_ip(card, ipaddr))
 798                 kfree(ipaddr);
 799         qeth_l3_set_ip_addr_list(card);
 800         return rc;
 801 }
 802
 803 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 804               const u8 *addr)
 805 {
 806         struct qeth_ipaddr *ipaddr;
 807
 808         ipaddr = qeth_l3_get_addr_buffer(proto);
 809         if (ipaddr) {
 810                 if (proto == QETH_PROT_IPV4) {
 811                         QETH_DBF_TEXT(TRACE, 2, "delvipa4");
 812                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 813                         ipaddr->u.a4.mask = 0;
 814                 } else if (proto == QETH_PROT_IPV6) {
 815                         QETH_DBF_TEXT(TRACE, 2, "delvipa6");
 816                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 817                         ipaddr->u.a6.pfxlen = 0;
 818                 }
 819                 ipaddr->type = QETH_IP_TYPE_VIPA;
 820         } else
 821                 return;
 822         if (!qeth_l3_delete_ip(card, ipaddr))
 823                 kfree(ipaddr);
 824         qeth_l3_set_ip_addr_list(card);
 825 }
 826
 827 /*
 828  * proxy ARP related functions
 829  */
 830 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 831               const u8 *addr)
 832 {
 833         struct qeth_ipaddr *ipaddr;
 834         unsigned long flags;
 835         int rc = 0;
 836
 837         ipaddr = qeth_l3_get_addr_buffer(proto);
 838         if (ipaddr) {
 839                 if (proto == QETH_PROT_IPV4) {
 840                         QETH_DBF_TEXT(TRACE, 2, "addrxip4");
 841                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 842                         ipaddr->u.a4.mask = 0;
 843                 } else if (proto == QETH_PROT_IPV6) {
 844                         QETH_DBF_TEXT(TRACE, 2, "addrxip6");
 845                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 846                         ipaddr->u.a6.pfxlen = 0;
 847                 }
 848                 ipaddr->type = QETH_IP_TYPE_RXIP;
 849                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 850                 ipaddr->del_flags = 0;
 851         } else
 852                 return -ENOMEM;
 853         spin_lock_irqsave(&card->ip_lock, flags);
 854         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 855             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 856                 rc = -EEXIST;
 857         spin_unlock_irqrestore(&card->ip_lock, flags);
 858         if (rc) {
 859                 return rc;
 860         }
 861         if (!qeth_l3_add_ip(card, ipaddr))
 862                 kfree(ipaddr);
 863         qeth_l3_set_ip_addr_list(card);
 864         return 0;
 865 }
 866
 867 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 868                         const u8 *addr)
 869 {
 870         struct qeth_ipaddr *ipaddr;
 871
 872         ipaddr = qeth_l3_get_addr_buffer(proto);
 873         if (ipaddr) {
 874                 if (proto == QETH_PROT_IPV4) {
 875                         QETH_DBF_TEXT(TRACE, 2, "addrxip4");
 876                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 877                         ipaddr->u.a4.mask = 0;
 878                 } else if (proto == QETH_PROT_IPV6) {
 879                         QETH_DBF_TEXT(TRACE, 2, "addrxip6");
 880                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 881                         ipaddr->u.a6.pfxlen = 0;
 882                 }
 883                 ipaddr->type = QETH_IP_TYPE_RXIP;
 884         } else
 885                 return;
 886         if (!qeth_l3_delete_ip(card, ipaddr))
 887                 kfree(ipaddr);
 888         qeth_l3_set_ip_addr_list(card);
 889 }
 890
 891 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 892                                 struct qeth_ipaddr *addr)
 893 {
 894         char buf[50];
 895         int rc = 0;
 896         int cnt = 3;
 897
 898         if (addr->proto == QETH_PROT_IPV4) {
 899                 QETH_DBF_TEXT(TRACE, 2, "setaddr4");
 900                 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
 901         } else if (addr->proto == QETH_PROT_IPV6) {
 902                 QETH_DBF_TEXT(TRACE, 2, "setaddr6");
 903                 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
 904                 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 905         } else {
 906                 QETH_DBF_TEXT(TRACE, 2, "setaddr?");
 907                 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
 908         }
 909         do {
 910                 if (addr->is_multicast)
 911                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 912                 else
 913                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 914                                         addr->set_flags);
 915                 if (rc)
 916                         QETH_DBF_TEXT(TRACE, 2, "failed");
 917         } while ((--cnt > 0) && rc);
 918         if (rc) {
 919                 QETH_DBF_TEXT(TRACE, 2, "FAILED");
 920                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 921                 dev_warn(&card->gdev->dev,
 922                         "Registering IP address %s failed\n", buf);
 923         }
 924         return rc;
 925 }
 926
 927 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 928                                                 struct qeth_ipaddr *addr)
 929 {
 930         int rc = 0;
 931
 932         if (addr->proto == QETH_PROT_IPV4) {
 933                 QETH_DBF_TEXT(TRACE, 2, "deladdr4");
 934                 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
 935         } else if (addr->proto == QETH_PROT_IPV6) {
 936                 QETH_DBF_TEXT(TRACE, 2, "deladdr6");
 937                 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
 938                 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 939         } else {
 940                 QETH_DBF_TEXT(TRACE, 2, "deladdr?");
 941                 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
 942         }
 943         if (addr->is_multicast)
 944                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 945         else
 946                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 947                                         addr->del_flags);
 948         if (rc)
 949                 QETH_DBF_TEXT(TRACE, 2, "failed");
 950
 951         return rc;
 952 }
 953
 954 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 955 {
 956         if (cast_type == RTN_MULTICAST)
 957                 return QETH_CAST_MULTICAST;
 958         if (cast_type == RTN_BROADCAST)
 959                 return QETH_CAST_BROADCAST;
 960         return QETH_CAST_UNICAST;
 961 }
 962
 963 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 964 {
 965         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 966         if (cast_type == RTN_MULTICAST)
 967                 return ct | QETH_CAST_MULTICAST;
 968         if (cast_type == RTN_ANYCAST)
 969                 return ct | QETH_CAST_ANYCAST;
 970         if (cast_type == RTN_BROADCAST)
 971                 return ct | QETH_CAST_BROADCAST;
 972         return ct | QETH_CAST_UNICAST;
 973 }
 974
 975 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
 976                                         __u32 mode)
 977 {
 978         int rc;
 979         struct qeth_cmd_buffer *iob;
 980         struct qeth_ipa_cmd *cmd;
 981
 982         QETH_DBF_TEXT(TRACE, 4, "adpmode");
 983
 984         iob = qeth_get_adapter_cmd(card, command,
 985                                    sizeof(struct qeth_ipacmd_setadpparms));
 986         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 987         cmd->data.setadapterparms.data.mode = mode;
 988         rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
 989                                NULL);
 990         return rc;
 991 }
 992
 993 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
 994 {
 995         int rc;
 996
 997         QETH_DBF_TEXT(TRACE, 4, "adphstr");
 998
 999         if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1000                 rc = qeth_l3_send_setadp_mode(card,
1001                                         IPA_SETADP_SET_BROADCAST_MODE,
1002                                         card->options.broadcast_mode);
1003                 if (rc)
1004                         QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1005                                    "device %s: x%x\n",
1006                                    CARD_BUS_ID(card), rc);
1007                 rc = qeth_l3_send_setadp_mode(card,
1008                                         IPA_SETADP_ALTER_MAC_ADDRESS,
1009                                         card->options.macaddr_mode);
1010                 if (rc)
1011                         QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1012                                    "device %s: x%x\n", CARD_BUS_ID(card), rc);
1013                 return rc;
1014         }
1015         if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1016                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1017                            "to set broadcast mode, using ALLRINGS "
1018                            "on device %s:\n", CARD_BUS_ID(card));
1019         if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1020                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1021                            "to set macaddr mode, using NONCANONICAL "
1022                            "on device %s:\n", CARD_BUS_ID(card));
1023         return 0;
1024 }
1025
1026 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1027 {
1028         int rc;
1029
1030         QETH_DBF_TEXT(SETUP, 2, "setadprm");
1031
1032         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1033                 dev_info(&card->gdev->dev,
1034                         "set adapter parameters not supported.\n");
1035                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1036                 return 0;
1037         }
1038         rc = qeth_query_setadapterparms(card);
1039         if (rc) {
1040                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1041                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1042                 return rc;
1043         }
1044         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1045                 rc = qeth_setadpparms_change_macaddr(card);
1046                 if (rc)
1047                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1048                                 " address failed\n");
1049         }
1050
1051         if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1052             (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1053                 rc = qeth_l3_setadapter_hstr(card);
1054
1055         return rc;
1056 }
1057
1058 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1059                         struct qeth_reply *reply, unsigned long data)
1060 {
1061         struct qeth_ipa_cmd *cmd;
1062
1063         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
1064
1065         cmd = (struct qeth_ipa_cmd *) data;
1066         if (cmd->hdr.return_code == 0) {
1067                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1068                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1069                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1070                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1071                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1072         }
1073         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1074             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1075                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1076                 QETH_DBF_TEXT_(TRACE, 3, "csum:%d", card->info.csum_mask);
1077         }
1078         return 0;
1079 }
1080
1081 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1082         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1083         __u16 len, enum qeth_prot_versions prot)
1084 {
1085         struct qeth_cmd_buffer *iob;
1086         struct qeth_ipa_cmd *cmd;
1087
1088         QETH_DBF_TEXT(TRACE, 4, "getasscm");
1089         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1090
1091         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1092         cmd->data.setassparms.hdr.assist_no = ipa_func;
1093         cmd->data.setassparms.hdr.length = 8 + len;
1094         cmd->data.setassparms.hdr.command_code = cmd_code;
1095         cmd->data.setassparms.hdr.return_code = 0;
1096         cmd->data.setassparms.hdr.seq_no = 0;
1097
1098         return iob;
1099 }
1100
1101 static int qeth_l3_send_setassparms(struct qeth_card *card,
1102         struct qeth_cmd_buffer *iob, __u16 len, long data,
1103         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1104                 unsigned long),
1105         void *reply_param)
1106 {
1107         int rc;
1108         struct qeth_ipa_cmd *cmd;
1109
1110         QETH_DBF_TEXT(TRACE, 4, "sendassp");
1111
1112         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1113         if (len <= sizeof(__u32))
1114                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1115         else   /* (len > sizeof(__u32)) */
1116                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1117
1118         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1119         return rc;
1120 }
1121
1122 #ifdef CONFIG_QETH_IPV6
1123 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1124                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1125 {
1126         int rc;
1127         struct qeth_cmd_buffer *iob;
1128
1129         QETH_DBF_TEXT(TRACE, 4, "simassp6");
1130         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1131                                        0, QETH_PROT_IPV6);
1132         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1133                                    qeth_l3_default_setassparms_cb, NULL);
1134         return rc;
1135 }
1136 #endif
1137
1138 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1139                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1140 {
1141         int rc;
1142         int length = 0;
1143         struct qeth_cmd_buffer *iob;
1144
1145         QETH_DBF_TEXT(TRACE, 4, "simassp4");
1146         if (data)
1147                 length = sizeof(__u32);
1148         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1149                                        length, QETH_PROT_IPV4);
1150         rc = qeth_l3_send_setassparms(card, iob, length, data,
1151                                    qeth_l3_default_setassparms_cb, NULL);
1152         return rc;
1153 }
1154
1155 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1156 {
1157         int rc;
1158
1159         QETH_DBF_TEXT(TRACE, 3, "ipaarp");
1160
1161         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1162                 dev_info(&card->gdev->dev,
1163                         "ARP processing not supported on %s!\n",
1164                         QETH_CARD_IFNAME(card));
1165                 return 0;
1166         }
1167         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1168                                         IPA_CMD_ASS_START, 0);
1169         if (rc) {
1170                 dev_warn(&card->gdev->dev,
1171                         "Starting ARP processing support for %s failed\n",
1172                         QETH_CARD_IFNAME(card));
1173         }
1174         return rc;
1175 }
1176
1177 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1178 {
1179         int rc;
1180
1181         QETH_DBF_TEXT(TRACE, 3, "ipaipfrg");
1182
1183         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1184                 dev_info(&card->gdev->dev,
1185                         "Hardware IP fragmentation not supported on %s\n",
1186                         QETH_CARD_IFNAME(card));
1187                 return  -EOPNOTSUPP;
1188         }
1189
1190         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1191                                           IPA_CMD_ASS_START, 0);
1192         if (rc) {
1193                 dev_warn(&card->gdev->dev,
1194                         "Starting IP fragmentation support for %s failed\n",
1195                         QETH_CARD_IFNAME(card));
1196         } else
1197                 dev_info(&card->gdev->dev,
1198                         "Hardware IP fragmentation enabled \n");
1199         return rc;
1200 }
1201
1202 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1203 {
1204         int rc;
1205
1206         QETH_DBF_TEXT(TRACE, 3, "stsrcmac");
1207
1208         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1209                 dev_info(&card->gdev->dev,
1210                         "Inbound source MAC-address not supported on %s\n",
1211                         QETH_CARD_IFNAME(card));
1212                 return -EOPNOTSUPP;
1213         }
1214
1215         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1216                                           IPA_CMD_ASS_START, 0);
1217         if (rc)
1218                 dev_warn(&card->gdev->dev,
1219                         "Starting source MAC-address support for %s failed\n",
1220                         QETH_CARD_IFNAME(card));
1221         return rc;
1222 }
1223
1224 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1225 {
1226         int rc = 0;
1227
1228         QETH_DBF_TEXT(TRACE, 3, "strtvlan");
1229
1230         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1231                 dev_info(&card->gdev->dev,
1232                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1233                 return -EOPNOTSUPP;
1234         }
1235
1236         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1237                                           IPA_CMD_ASS_START, 0);
1238         if (rc) {
1239                 dev_warn(&card->gdev->dev,
1240                         "Starting VLAN support for %s failed\n",
1241                         QETH_CARD_IFNAME(card));
1242         } else {
1243                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1244         }
1245         return rc;
1246 }
1247
1248 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1249 {
1250         int rc;
1251
1252         QETH_DBF_TEXT(TRACE, 3, "stmcast");
1253
1254         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1255                 dev_info(&card->gdev->dev,
1256                         "Multicast not supported on %s\n",
1257                         QETH_CARD_IFNAME(card));
1258                 return -EOPNOTSUPP;
1259         }
1260
1261         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1262                                           IPA_CMD_ASS_START, 0);
1263         if (rc) {
1264                 dev_warn(&card->gdev->dev,
1265                         "Starting multicast support for %s failed\n",
1266                         QETH_CARD_IFNAME(card));
1267         } else {
1268                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1269                 card->dev->flags |= IFF_MULTICAST;
1270         }
1271         return rc;
1272 }
1273
1274 static int qeth_l3_query_ipassists_cb(struct qeth_card *card,
1275                 struct qeth_reply *reply, unsigned long data)
1276 {
1277         struct qeth_ipa_cmd *cmd;
1278
1279         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
1280
1281         cmd = (struct qeth_ipa_cmd *) data;
1282         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
1283                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
1284                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1285         } else {
1286                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
1287                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1288         }
1289         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
1290         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
1291         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
1292         return 0;
1293 }
1294
1295 static int qeth_l3_query_ipassists(struct qeth_card *card,
1296                                 enum qeth_prot_versions prot)
1297 {
1298         int rc;
1299         struct qeth_cmd_buffer *iob;
1300
1301         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
1302         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
1303         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL);
1304         return rc;
1305 }
1306
1307 #ifdef CONFIG_QETH_IPV6
1308 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1309 {
1310         int rc;
1311
1312         QETH_DBF_TEXT(TRACE, 3, "softipv6");
1313
1314         if (card->info.type == QETH_CARD_TYPE_IQD)
1315                 goto out;
1316
1317         rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6);
1318         if (rc) {
1319                 dev_err(&card->gdev->dev,
1320                         "Activating IPv6 support for %s failed\n",
1321                         QETH_CARD_IFNAME(card));
1322                 return rc;
1323         }
1324         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1325                                           IPA_CMD_ASS_START, 3);
1326         if (rc) {
1327                 dev_err(&card->gdev->dev,
1328                         "Activating IPv6 support for %s failed\n",
1329                         QETH_CARD_IFNAME(card));
1330                 return rc;
1331         }
1332         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1333                                                IPA_CMD_ASS_START);
1334         if (rc) {
1335                 dev_err(&card->gdev->dev,
1336                         "Activating IPv6 support for %s failed\n",
1337                          QETH_CARD_IFNAME(card));
1338                 return rc;
1339         }
1340         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1341                                                IPA_CMD_ASS_START);
1342         if (rc) {
1343                 dev_warn(&card->gdev->dev,
1344                         "Enabling the passthrough mode for %s failed\n",
1345                         QETH_CARD_IFNAME(card));
1346                 return rc;
1347         }
1348 out:
1349         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1350         return 0;
1351 }
1352 #endif
1353
1354 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1355 {
1356         int rc = 0;
1357
1358         QETH_DBF_TEXT(TRACE, 3, "strtipv6");
1359
1360         if (!qeth_is_supported(card, IPA_IPV6)) {
1361                 dev_info(&card->gdev->dev,
1362                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1363                 return 0;
1364         }
1365 #ifdef CONFIG_QETH_IPV6
1366         rc = qeth_l3_softsetup_ipv6(card);
1367 #endif
1368         return rc ;
1369 }
1370
1371 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1372 {
1373         int rc;
1374
1375         QETH_DBF_TEXT(TRACE, 3, "stbrdcst");
1376         card->info.broadcast_capable = 0;
1377         if (!qeth_is_supported(card, IPA_FILTERING)) {
1378                 dev_info(&card->gdev->dev,
1379                         "Broadcast not supported on %s\n",
1380                         QETH_CARD_IFNAME(card));
1381                 rc = -EOPNOTSUPP;
1382                 goto out;
1383         }
1384         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1385                                           IPA_CMD_ASS_START, 0);
1386         if (rc) {
1387                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1388                         "%s failed\n", QETH_CARD_IFNAME(card));
1389                 goto out;
1390         }
1391
1392         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1393                                           IPA_CMD_ASS_CONFIGURE, 1);
1394         if (rc) {
1395                 dev_warn(&card->gdev->dev,
1396                         "Setting up broadcast filtering for %s failed\n",
1397                         QETH_CARD_IFNAME(card));
1398                 goto out;
1399         }
1400         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1401         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1402         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1403                                           IPA_CMD_ASS_ENABLE, 1);
1404         if (rc) {
1405                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1406                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1407                 goto out;
1408         }
1409         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1410 out:
1411         if (card->info.broadcast_capable)
1412                 card->dev->flags |= IFF_BROADCAST;
1413         else
1414                 card->dev->flags &= ~IFF_BROADCAST;
1415         return rc;
1416 }
1417
1418 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1419 {
1420         int rc;
1421
1422         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1423                                           IPA_CMD_ASS_START, 0);
1424         if (rc) {
1425                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1426                         "failed, using SW checksumming\n",
1427                         QETH_CARD_IFNAME(card));
1428                 return rc;
1429         }
1430         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1431                                           IPA_CMD_ASS_ENABLE,
1432                                           card->info.csum_mask);
1433         if (rc) {
1434                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1435                         "failed, using SW checksumming\n",
1436                         QETH_CARD_IFNAME(card));
1437                 return rc;
1438         }
1439         return 0;
1440 }
1441
1442 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1443 {
1444         int rc = 0;
1445
1446         QETH_DBF_TEXT(TRACE, 3, "strtcsum");
1447
1448         if (card->options.checksum_type == NO_CHECKSUMMING) {
1449                 dev_info(&card->gdev->dev,
1450                         "Using no checksumming on %s.\n",
1451                         QETH_CARD_IFNAME(card));
1452                 return 0;
1453         }
1454         if (card->options.checksum_type == SW_CHECKSUMMING) {
1455                 dev_info(&card->gdev->dev,
1456                         "Using SW checksumming on %s.\n",
1457                         QETH_CARD_IFNAME(card));
1458                 return 0;
1459         }
1460         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1461                 dev_info(&card->gdev->dev,
1462                         "Inbound HW Checksumming not "
1463                         "supported on %s,\ncontinuing "
1464                         "using Inbound SW Checksumming\n",
1465                         QETH_CARD_IFNAME(card));
1466                 card->options.checksum_type = SW_CHECKSUMMING;
1467                 return 0;
1468         }
1469         rc = qeth_l3_send_checksum_command(card);
1470         if (!rc)
1471                 dev_info(&card->gdev->dev,
1472                         "HW Checksumming (inbound) enabled\n");
1473
1474         return rc;
1475 }
1476
1477 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1478 {
1479         int rc;
1480
1481         QETH_DBF_TEXT(TRACE, 3, "sttso");
1482
1483         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1484                 dev_info(&card->gdev->dev,
1485                         "Outbound TSO not supported on %s\n",
1486                         QETH_CARD_IFNAME(card));
1487                 rc = -EOPNOTSUPP;
1488         } else {
1489                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1490                                                 IPA_CMD_ASS_START, 0);
1491                 if (rc)
1492                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1493                                 "segmentation offload for %s failed\n",
1494                                 QETH_CARD_IFNAME(card));
1495                 else
1496                         dev_info(&card->gdev->dev,
1497                                 "Outbound TSO enabled\n");
1498         }
1499         if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) {
1500                 card->options.large_send = QETH_LARGE_SEND_NO;
1501                 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
1502         }
1503         return rc;
1504 }
1505
1506 static int qeth_l3_start_ipassists(struct qeth_card *card)
1507 {
1508         QETH_DBF_TEXT(TRACE, 3, "strtipas");
1509         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1510         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1511         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1512         qeth_l3_start_ipa_vlan(card);           /* go on*/
1513         qeth_l3_start_ipa_multicast(card);              /* go on*/
1514         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1515         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1516         qeth_l3_start_ipa_checksum(card);               /* go on*/
1517         qeth_l3_start_ipa_tso(card);            /* go on*/
1518         return 0;
1519 }
1520
1521 static int qeth_l3_put_unique_id(struct qeth_card *card)
1522 {
1523
1524         int rc = 0;
1525         struct qeth_cmd_buffer *iob;
1526         struct qeth_ipa_cmd *cmd;
1527
1528         QETH_DBF_TEXT(TRACE, 2, "puniqeid");
1529
1530         if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
1531                 UNIQUE_ID_NOT_BY_CARD)
1532                 return -1;
1533         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
1534                                      QETH_PROT_IPV6);
1535         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1536         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1537                                 card->info.unique_id;
1538         memcpy(&cmd->data.create_destroy_addr.unique_id[0],
1539                card->dev->dev_addr, OSA_ADDR_LEN);
1540         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
1541         return rc;
1542 }
1543
1544 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1545                 struct qeth_reply *reply, unsigned long data)
1546 {
1547         struct qeth_ipa_cmd *cmd;
1548
1549         cmd = (struct qeth_ipa_cmd *) data;
1550         if (cmd->hdr.return_code == 0)
1551                 memcpy(card->dev->dev_addr,
1552                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1553         else
1554                 random_ether_addr(card->dev->dev_addr);
1555
1556         return 0;
1557 }
1558
1559 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1560 {
1561         int rc = 0;
1562         struct qeth_cmd_buffer *iob;
1563         struct qeth_ipa_cmd *cmd;
1564
1565         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1566
1567         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1568                                      QETH_PROT_IPV6);
1569         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1570         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1571                         card->info.unique_id;
1572
1573         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1574                                 NULL);
1575         return rc;
1576 }
1577
1578 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1579                 struct qeth_reply *reply, unsigned long data)
1580 {
1581         struct qeth_ipa_cmd *cmd;
1582
1583         cmd = (struct qeth_ipa_cmd *) data;
1584         if (cmd->hdr.return_code == 0)
1585                 card->info.unique_id = *((__u16 *)
1586                                 &cmd->data.create_destroy_addr.unique_id[6]);
1587         else {
1588                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1589                                         UNIQUE_ID_NOT_BY_CARD;
1590                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1591                         "generate a unique ID\n");
1592         }
1593         return 0;
1594 }
1595
1596 static int qeth_l3_get_unique_id(struct qeth_card *card)
1597 {
1598         int rc = 0;
1599         struct qeth_cmd_buffer *iob;
1600         struct qeth_ipa_cmd *cmd;
1601
1602         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1603
1604         if (!qeth_is_supported(card, IPA_IPV6)) {
1605                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1606                                         UNIQUE_ID_NOT_BY_CARD;
1607                 return 0;
1608         }
1609
1610         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1611                                      QETH_PROT_IPV6);
1612         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1613         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1614                         card->info.unique_id;
1615
1616         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1617         return rc;
1618 }
1619
1620 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1621                                 struct net_device *dev)
1622 {
1623         if (dev->type == ARPHRD_IEEE802_TR)
1624                 ip_tr_mc_map(ipm, mac);
1625         else
1626                 ip_eth_mc_map(ipm, mac);
1627 }
1628
1629 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1630 {
1631         struct qeth_ipaddr *ipm;
1632         struct ip_mc_list *im4;
1633         char buf[MAX_ADDR_LEN];
1634
1635         QETH_DBF_TEXT(TRACE, 4, "addmc");
1636         for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
1637                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1638                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1639                 if (!ipm)
1640                         continue;
1641                 ipm->u.a4.addr = im4->multiaddr;
1642                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1643                 ipm->is_multicast = 1;
1644                 if (!qeth_l3_add_ip(card, ipm))
1645                         kfree(ipm);
1646         }
1647 }
1648
1649 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1650 {
1651         struct in_device *in_dev;
1652         struct vlan_group *vg;
1653         int i;
1654
1655         QETH_DBF_TEXT(TRACE, 4, "addmcvl");
1656         if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1657                 return;
1658
1659         vg = card->vlangrp;
1660         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1661                 struct net_device *netdev = vlan_group_get_device(vg, i);
1662                 if (netdev == NULL ||
1663                     !(netdev->flags & IFF_UP))
1664                         continue;
1665                 in_dev = in_dev_get(netdev);
1666                 if (!in_dev)
1667                         continue;
1668                 read_lock(&in_dev->mc_list_lock);
1669                 qeth_l3_add_mc(card, in_dev);
1670                 read_unlock(&in_dev->mc_list_lock);
1671                 in_dev_put(in_dev);
1672         }
1673 }
1674
1675 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1676 {
1677         struct in_device *in4_dev;
1678
1679         QETH_DBF_TEXT(TRACE, 4, "chkmcv4");
1680         in4_dev = in_dev_get(card->dev);
1681         if (in4_dev == NULL)
1682                 return;
1683         read_lock(&in4_dev->mc_list_lock);
1684         qeth_l3_add_mc(card, in4_dev);
1685         qeth_l3_add_vlan_mc(card);
1686         read_unlock(&in4_dev->mc_list_lock);
1687         in_dev_put(in4_dev);
1688 }
1689
1690 #ifdef CONFIG_QETH_IPV6
1691 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1692 {
1693         struct qeth_ipaddr *ipm;
1694         struct ifmcaddr6 *im6;
1695         char buf[MAX_ADDR_LEN];
1696
1697         QETH_DBF_TEXT(TRACE, 4, "addmc6");
1698         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1699                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1700                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1701                 if (!ipm)
1702                         continue;
1703                 ipm->is_multicast = 1;
1704                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1705                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1706                        sizeof(struct in6_addr));
1707                 if (!qeth_l3_add_ip(card, ipm))
1708                         kfree(ipm);
1709         }
1710 }
1711
1712 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1713 {
1714         struct inet6_dev *in_dev;
1715         struct vlan_group *vg;
1716         int i;
1717
1718         QETH_DBF_TEXT(TRACE, 4, "admc6vl");
1719         if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1720                 return;
1721
1722         vg = card->vlangrp;
1723         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1724                 struct net_device *netdev = vlan_group_get_device(vg, i);
1725                 if (netdev == NULL ||
1726                     !(netdev->flags & IFF_UP))
1727                         continue;
1728                 in_dev = in6_dev_get(netdev);
1729                 if (!in_dev)
1730                         continue;
1731                 read_lock_bh(&in_dev->lock);
1732                 qeth_l3_add_mc6(card, in_dev);
1733                 read_unlock_bh(&in_dev->lock);
1734                 in6_dev_put(in_dev);
1735         }
1736 }
1737
1738 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1739 {
1740         struct inet6_dev *in6_dev;
1741
1742         QETH_DBF_TEXT(TRACE, 4, "chkmcv6");
1743         if (!qeth_is_supported(card, IPA_IPV6))
1744                 return ;
1745         in6_dev = in6_dev_get(card->dev);
1746         if (in6_dev == NULL)
1747                 return;
1748         read_lock_bh(&in6_dev->lock);
1749         qeth_l3_add_mc6(card, in6_dev);
1750         qeth_l3_add_vlan_mc6(card);
1751         read_unlock_bh(&in6_dev->lock);
1752         in6_dev_put(in6_dev);
1753 }
1754 #endif /* CONFIG_QETH_IPV6 */
1755
1756 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1757                         unsigned short vid)
1758 {
1759         struct in_device *in_dev;
1760         struct in_ifaddr *ifa;
1761         struct qeth_ipaddr *addr;
1762
1763         QETH_DBF_TEXT(TRACE, 4, "frvaddr4");
1764
1765         in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1766         if (!in_dev)
1767                 return;
1768         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1769                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1770                 if (addr) {
1771                         addr->u.a4.addr = ifa->ifa_address;
1772                         addr->u.a4.mask = ifa->ifa_mask;
1773                         addr->type = QETH_IP_TYPE_NORMAL;
1774                         if (!qeth_l3_delete_ip(card, addr))
1775                                 kfree(addr);
1776                 }
1777         }
1778         in_dev_put(in_dev);
1779 }
1780
1781 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1782                         unsigned short vid)
1783 {
1784 #ifdef CONFIG_QETH_IPV6
1785         struct inet6_dev *in6_dev;
1786         struct inet6_ifaddr *ifa;
1787         struct qeth_ipaddr *addr;
1788
1789         QETH_DBF_TEXT(TRACE, 4, "frvaddr6");
1790
1791         in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1792         if (!in6_dev)
1793                 return;
1794         for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next) {
1795                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1796                 if (addr) {
1797                         memcpy(&addr->u.a6.addr, &ifa->addr,
1798                                sizeof(struct in6_addr));
1799                         addr->u.a6.pfxlen = ifa->prefix_len;
1800                         addr->type = QETH_IP_TYPE_NORMAL;
1801                         if (!qeth_l3_delete_ip(card, addr))
1802                                 kfree(addr);
1803                 }
1804         }
1805         in6_dev_put(in6_dev);
1806 #endif /* CONFIG_QETH_IPV6 */
1807 }
1808
1809 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1810                         unsigned short vid)
1811 {
1812         if (!card->vlangrp)
1813                 return;
1814         qeth_l3_free_vlan_addresses4(card, vid);
1815         qeth_l3_free_vlan_addresses6(card, vid);
1816 }
1817
1818 static void qeth_l3_vlan_rx_register(struct net_device *dev,
1819                         struct vlan_group *grp)
1820 {
1821         struct qeth_card *card = dev->ml_priv;
1822         unsigned long flags;
1823
1824         QETH_DBF_TEXT(TRACE, 4, "vlanreg");
1825         spin_lock_irqsave(&card->vlanlock, flags);
1826         card->vlangrp = grp;
1827         spin_unlock_irqrestore(&card->vlanlock, flags);
1828 }
1829
1830 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1831 {
1832         return;
1833 }
1834
1835 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1836 {
1837         struct qeth_card *card = dev->ml_priv;
1838         unsigned long flags;
1839
1840         QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
1841         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1842                 QETH_DBF_TEXT(TRACE, 3, "kidREC");
1843                 return;
1844         }
1845         spin_lock_irqsave(&card->vlanlock, flags);
1846         /* unregister IP addresses of vlan device */
1847         qeth_l3_free_vlan_addresses(card, vid);
1848         vlan_group_set_device(card->vlangrp, vid, NULL);
1849         spin_unlock_irqrestore(&card->vlanlock, flags);
1850         qeth_l3_set_multicast_list(card->dev);
1851 }
1852
1853 static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card,
1854                         struct sk_buff *skb, struct qeth_hdr *hdr)
1855 {
1856         unsigned short vlan_id = 0;
1857         __be16 prot;
1858         struct iphdr *ip_hdr;
1859         unsigned char tg_addr[MAX_ADDR_LEN];
1860
1861         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1862                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1863                               ETH_P_IP);
1864                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1865                 case QETH_CAST_MULTICAST:
1866                         switch (prot) {
1867 #ifdef CONFIG_QETH_IPV6
1868                         case __constant_htons(ETH_P_IPV6):
1869                                 ndisc_mc_map((struct in6_addr *)
1870                                      skb->data + 24,
1871                                      tg_addr, card->dev, 0);
1872                                 break;
1873 #endif
1874                         case __constant_htons(ETH_P_IP):
1875                                 ip_hdr = (struct iphdr *)skb->data;
1876                                 (card->dev->type == ARPHRD_IEEE802_TR) ?
1877                                 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1878                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1879                                 break;
1880                         default:
1881                                 memcpy(tg_addr, card->dev->broadcast,
1882                                         card->dev->addr_len);
1883                         }
1884                         card->stats.multicast++;
1885                         skb->pkt_type = PACKET_MULTICAST;
1886                         break;
1887                 case QETH_CAST_BROADCAST:
1888                         memcpy(tg_addr, card->dev->broadcast,
1889                                 card->dev->addr_len);
1890                         card->stats.multicast++;
1891                         skb->pkt_type = PACKET_BROADCAST;
1892                         break;
1893                 case QETH_CAST_UNICAST:
1894                 case QETH_CAST_ANYCAST:
1895                 case QETH_CAST_NOCAST:
1896                 default:
1897                         skb->pkt_type = PACKET_HOST;
1898                         memcpy(tg_addr, card->dev->dev_addr,
1899                                 card->dev->addr_len);
1900                 }
1901                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1902                         card->dev->header_ops->create(skb, card->dev, prot,
1903                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1904                                 card->dev->addr_len);
1905                 else
1906                         card->dev->header_ops->create(skb, card->dev, prot,
1907                                 tg_addr, "FAKELL", card->dev->addr_len);
1908         }
1909
1910 #ifdef CONFIG_TR
1911         if (card->dev->type == ARPHRD_IEEE802_TR)
1912                 skb->protocol = tr_type_trans(skb, card->dev);
1913         else
1914 #endif
1915                 skb->protocol = eth_type_trans(skb, card->dev);
1916
1917         if (hdr->hdr.l3.ext_flags &
1918             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1919                 vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
1920                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1921         }
1922
1923         skb->ip_summed = card->options.checksum_type;
1924         if (card->options.checksum_type == HW_CHECKSUMMING) {
1925                 if ((hdr->hdr.l3.ext_flags &
1926                       (QETH_HDR_EXT_CSUM_HDR_REQ |
1927                        QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1928                      (QETH_HDR_EXT_CSUM_HDR_REQ |
1929                       QETH_HDR_EXT_CSUM_TRANSP_REQ))
1930                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1931                 else
1932                         skb->ip_summed = SW_CHECKSUMMING;
1933         }
1934
1935         return vlan_id;
1936 }
1937
1938 static void qeth_l3_process_inbound_buffer(struct qeth_card *card,
1939                             struct qeth_qdio_buffer *buf, int index)
1940 {
1941         struct qdio_buffer_element *element;
1942         struct sk_buff *skb;
1943         struct qeth_hdr *hdr;
1944         int offset;
1945         __u16 vlan_tag = 0;
1946         unsigned int len;
1947
1948         /* get first element of current buffer */
1949         element = (struct qdio_buffer_element *)&buf->buffer->element[0];
1950         offset = 0;
1951         if (card->options.performance_stats)
1952                 card->perf_stats.bufs_rec++;
1953         while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
1954                                        &offset, &hdr))) {
1955                 skb->dev = card->dev;
1956                 /* is device UP ? */
1957                 if (!(card->dev->flags & IFF_UP)) {
1958                         dev_kfree_skb_any(skb);
1959                         continue;
1960                 }
1961
1962                 switch (hdr->hdr.l3.id) {
1963                 case QETH_HEADER_TYPE_LAYER3:
1964                         vlan_tag = qeth_l3_rebuild_skb(card, skb, hdr);
1965                         len = skb->len;
1966                         if (vlan_tag)
1967                                 if (card->vlangrp)
1968                                         vlan_hwaccel_rx(skb, card->vlangrp,
1969                                                 vlan_tag);
1970                                 else {
1971                                         dev_kfree_skb_any(skb);
1972                                         continue;
1973                                 }
1974                         else
1975                                 netif_rx(skb);
1976                         break;
1977                 default:
1978                         dev_kfree_skb_any(skb);
1979                         QETH_DBF_TEXT(TRACE, 3, "inbunkno");
1980                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1981                         continue;
1982                 }
1983
1984                 card->dev->last_rx = jiffies;
1985                 card->stats.rx_packets++;
1986                 card->stats.rx_bytes += len;
1987         }
1988 }
1989
1990 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1991                         struct qeth_card *card)
1992 {
1993         int rc = 0;
1994         struct vlan_group *vg;
1995         int i;
1996
1997         vg = card->vlangrp;
1998         if (!vg)
1999                 return rc;
2000
2001         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
2002                 if (vlan_group_get_device(vg, i) == dev) {
2003                         rc = QETH_VLAN_CARD;
2004                         break;
2005                 }
2006         }
2007
2008         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2009                 return 0;
2010
2011         return rc;
2012 }
2013
2014 static int qeth_l3_verify_dev(struct net_device *dev)
2015 {
2016         struct qeth_card *card;
2017         unsigned long flags;
2018         int rc = 0;
2019
2020         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2021         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2022                 if (card->dev == dev) {
2023                         rc = QETH_REAL_CARD;
2024                         break;
2025                 }
2026                 rc = qeth_l3_verify_vlan_dev(dev, card);
2027                 if (rc)
2028                         break;
2029         }
2030         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2031
2032         return rc;
2033 }
2034
2035 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2036 {
2037         struct qeth_card *card = NULL;
2038         int rc;
2039
2040         rc = qeth_l3_verify_dev(dev);
2041         if (rc == QETH_REAL_CARD)
2042                 card = dev->ml_priv;
2043         else if (rc == QETH_VLAN_CARD)
2044                 card = vlan_dev_real_dev(dev)->ml_priv;
2045         if (card && card->options.layer2)
2046                 card = NULL;
2047         QETH_DBF_TEXT_(TRACE, 4, "%d", rc);
2048         return card ;
2049 }
2050
2051 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2052 {
2053         int rc = 0;
2054
2055         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2056         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2057
2058         qeth_set_allowed_threads(card, 0, 1);
2059         if (card->read.state == CH_STATE_UP &&
2060             card->write.state == CH_STATE_UP &&
2061             (card->state == CARD_STATE_UP)) {
2062                 if (recovery_mode)
2063                         qeth_l3_stop(card->dev);
2064                 else {
2065                         if (card->dev) {
2066                                 rtnl_lock();
2067                                 dev_close(card->dev);
2068                                 rtnl_unlock();
2069                         }
2070                 }
2071                 if (!card->use_hard_stop) {
2072                         rc = qeth_send_stoplan(card);
2073                         if (rc)
2074                                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2075                 }
2076                 card->state = CARD_STATE_SOFTSETUP;
2077         }
2078         if (card->state == CARD_STATE_SOFTSETUP) {
2079                 qeth_l3_clear_ip_list(card, !card->use_hard_stop, 1);
2080                 qeth_clear_ipacmd_list(card);
2081                 card->state = CARD_STATE_HARDSETUP;
2082         }
2083         if (card->state == CARD_STATE_HARDSETUP) {
2084                 if (!card->use_hard_stop &&
2085                     (card->info.type != QETH_CARD_TYPE_IQD)) {
2086                         rc = qeth_l3_put_unique_id(card);
2087                         if (rc)
2088                                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2089                 }
2090                 qeth_qdio_clear_card(card, 0);
2091                 qeth_clear_qdio_buffers(card);
2092                 qeth_clear_working_pool_list(card);
2093                 card->state = CARD_STATE_DOWN;
2094         }
2095         if (card->state == CARD_STATE_DOWN) {
2096                 qeth_clear_cmd_buffers(&card->read);
2097                 qeth_clear_cmd_buffers(&card->write);
2098         }
2099         card->use_hard_stop = 0;
2100         return rc;
2101 }
2102
2103 static void qeth_l3_set_multicast_list(struct net_device *dev)
2104 {
2105         struct qeth_card *card = dev->ml_priv;
2106
2107         QETH_DBF_TEXT(TRACE, 3, "setmulti");
2108         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2109             (card->state != CARD_STATE_UP))
2110                 return;
2111         qeth_l3_delete_mc_addresses(card);
2112         qeth_l3_add_multicast_ipv4(card);
2113 #ifdef CONFIG_QETH_IPV6
2114         qeth_l3_add_multicast_ipv6(card);
2115 #endif
2116         qeth_l3_set_ip_addr_list(card);
2117         if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2118                 return;
2119         qeth_setadp_promisc_mode(card);
2120 }
2121
2122 static const char *qeth_l3_arp_get_error_cause(int *rc)
2123 {
2124         switch (*rc) {
2125         case QETH_IPA_ARP_RC_FAILED:
2126                 *rc = -EIO;
2127                 return "operation failed";
2128         case QETH_IPA_ARP_RC_NOTSUPP:
2129                 *rc = -EOPNOTSUPP;
2130                 return "operation not supported";
2131         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2132                 *rc = -EINVAL;
2133                 return "argument out of range";
2134         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2135                 *rc = -EOPNOTSUPP;
2136                 return "query operation not supported";
2137         case QETH_IPA_ARP_RC_Q_NO_DATA:
2138                 *rc = -ENOENT;
2139                 return "no query data available";
2140         default:
2141                 return "unknown error";
2142         }
2143 }
2144
2145 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2146 {
2147         int tmp;
2148         int rc;
2149
2150         QETH_DBF_TEXT(TRACE, 3, "arpstnoe");
2151
2152         /*
2153          * currently GuestLAN only supports the ARP assist function
2154          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2155          * thus we say EOPNOTSUPP for this ARP function
2156          */
2157         if (card->info.guestlan)
2158                 return -EOPNOTSUPP;
2159         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2160                 return -EOPNOTSUPP;
2161         }
2162         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2163                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2164                                           no_entries);
2165         if (rc) {
2166                 tmp = rc;
2167                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2168                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2169                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2170         }
2171         return rc;
2172 }
2173
2174 static void qeth_l3_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
2175                 struct qeth_arp_query_data *qdata, int entry_size,
2176                 int uentry_size)
2177 {
2178         char *entry_ptr;
2179         char *uentry_ptr;
2180         int i;
2181
2182         entry_ptr = (char *)&qdata->data;
2183         uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
2184         for (i = 0; i < qdata->no_entries; ++i) {
2185                 /* strip off 32 bytes "media specific information" */
2186                 memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
2187                 entry_ptr += entry_size;
2188                 uentry_ptr += uentry_size;
2189         }
2190 }
2191
2192 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2193                 struct qeth_reply *reply, unsigned long data)
2194 {
2195         struct qeth_ipa_cmd *cmd;
2196         struct qeth_arp_query_data *qdata;
2197         struct qeth_arp_query_info *qinfo;
2198         int entry_size;
2199         int uentry_size;
2200         int i;
2201
2202         QETH_DBF_TEXT(TRACE, 4, "arpquecb");
2203
2204         qinfo = (struct qeth_arp_query_info *) reply->param;
2205         cmd = (struct qeth_ipa_cmd *) data;
2206         if (cmd->hdr.return_code) {
2207                 QETH_DBF_TEXT_(TRACE, 4, "qaer1%i", cmd->hdr.return_code);
2208                 return 0;
2209         }
2210         if (cmd->data.setassparms.hdr.return_code) {
2211                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2212                 QETH_DBF_TEXT_(TRACE, 4, "qaer2%i", cmd->hdr.return_code);
2213                 return 0;
2214         }
2215         qdata = &cmd->data.setassparms.data.query_arp;
2216         switch (qdata->reply_bits) {
2217         case 5:
2218                 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
2219                 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2220                         uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
2221                 break;
2222         case 7:
2223                 /* fall through to default */
2224         default:
2225                 /* tr is the same as eth -> entry7 */
2226                 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
2227                 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2228                         uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
2229                 break;
2230         }
2231         /* check if there is enough room in userspace */
2232         if ((qinfo->udata_len - qinfo->udata_offset) <
2233                         qdata->no_entries * uentry_size){
2234                 QETH_DBF_TEXT_(TRACE, 4, "qaer3%i", -ENOMEM);
2235                 cmd->hdr.return_code = -ENOMEM;
2236                 goto out_error;
2237         }
2238         QETH_DBF_TEXT_(TRACE, 4, "anore%i",
2239                        cmd->data.setassparms.hdr.number_of_replies);
2240         QETH_DBF_TEXT_(TRACE, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
2241         QETH_DBF_TEXT_(TRACE, 4, "anoen%i", qdata->no_entries);
2242
2243         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
2244                 /* strip off "media specific information" */
2245                 qeth_l3_copy_arp_entries_stripped(qinfo, qdata, entry_size,
2246                                                uentry_size);
2247         } else
2248                 /*copy entries to user buffer*/
2249                 memcpy(qinfo->udata + qinfo->udata_offset,
2250                        (char *)&qdata->data, qdata->no_entries*uentry_size);
2251
2252         qinfo->no_entries += qdata->no_entries;
2253         qinfo->udata_offset += (qdata->no_entries*uentry_size);
2254         /* check if all replies received ... */
2255         if (cmd->data.setassparms.hdr.seq_no <
2256             cmd->data.setassparms.hdr.number_of_replies)
2257                 return 1;
2258         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2259         /* keep STRIP_ENTRIES flag so the user program can distinguish
2260          * stripped entries from normal ones */
2261         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2262                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2263         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2264         return 0;
2265 out_error:
2266         i = 0;
2267         memcpy(qinfo->udata, &i, 4);
2268         return 0;
2269 }
2270
2271 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2272                 struct qeth_cmd_buffer *iob, int len,
2273                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2274                         unsigned long),
2275                 void *reply_param)
2276 {
2277         QETH_DBF_TEXT(TRACE, 4, "sendarp");
2278
2279         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2280         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2281                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2282         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2283                                       reply_cb, reply_param);
2284 }
2285
2286 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2287 {
2288         struct qeth_cmd_buffer *iob;
2289         struct qeth_arp_query_info qinfo = {0, };
2290         int tmp;
2291         int rc;
2292
2293         QETH_DBF_TEXT(TRACE, 3, "arpquery");
2294
2295         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2296                                IPA_ARP_PROCESSING)) {
2297                 return -EOPNOTSUPP;
2298         }
2299         /* get size of userspace buffer and mask_bits -> 6 bytes */
2300         if (copy_from_user(&qinfo, udata, 6))
2301                 return -EFAULT;
2302         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2303         if (!qinfo.udata)
2304                 return -ENOMEM;
2305         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2306         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2307                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2308                                        sizeof(int), QETH_PROT_IPV4);
2309
2310         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2311                                    QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2312                                    qeth_l3_arp_query_cb, (void *)&qinfo);
2313         if (rc) {
2314                 tmp = rc;
2315                 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on %s: %s "
2316                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2317                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2318                 if (copy_to_user(udata, qinfo.udata, 4))
2319                         rc = -EFAULT;
2320         } else {
2321                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
2322                         rc = -EFAULT;
2323         }
2324         kfree(qinfo.udata);
2325         return rc;
2326 }
2327
2328 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2329                                 struct qeth_arp_cache_entry *entry)
2330 {
2331         struct qeth_cmd_buffer *iob;
2332         char buf[16];
2333         int tmp;
2334         int rc;
2335
2336         QETH_DBF_TEXT(TRACE, 3, "arpadent");
2337
2338         /*
2339          * currently GuestLAN only supports the ARP assist function
2340          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2341          * thus we say EOPNOTSUPP for this ARP function
2342          */
2343         if (card->info.guestlan)
2344                 return -EOPNOTSUPP;
2345         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2346                 return -EOPNOTSUPP;
2347         }
2348
2349         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2350                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2351                                        sizeof(struct qeth_arp_cache_entry),
2352                                        QETH_PROT_IPV4);
2353         rc = qeth_l3_send_setassparms(card, iob,
2354                                    sizeof(struct qeth_arp_cache_entry),
2355                                    (unsigned long) entry,
2356                                    qeth_l3_default_setassparms_cb, NULL);
2357         if (rc) {
2358                 tmp = rc;
2359                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2360                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2361                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2362                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2363         }
2364         return rc;
2365 }
2366
2367 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2368                                 struct qeth_arp_cache_entry *entry)
2369 {
2370         struct qeth_cmd_buffer *iob;
2371         char buf[16] = {0, };
2372         int tmp;
2373         int rc;
2374
2375         QETH_DBF_TEXT(TRACE, 3, "arprment");
2376
2377         /*
2378          * currently GuestLAN only supports the ARP assist function
2379          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2380          * thus we say EOPNOTSUPP for this ARP function
2381          */
2382         if (card->info.guestlan)
2383                 return -EOPNOTSUPP;
2384         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2385                 return -EOPNOTSUPP;
2386         }
2387         memcpy(buf, entry, 12);
2388         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2389                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2390                                        12,
2391                                        QETH_PROT_IPV4);
2392         rc = qeth_l3_send_setassparms(card, iob,
2393                                    12, (unsigned long)buf,
2394                                    qeth_l3_default_setassparms_cb, NULL);
2395         if (rc) {
2396                 tmp = rc;
2397                 memset(buf, 0, 16);
2398                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2399                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2400                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2401                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2402         }
2403         return rc;
2404 }
2405
2406 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2407 {
2408         int rc;
2409         int tmp;
2410
2411         QETH_DBF_TEXT(TRACE, 3, "arpflush");
2412
2413         /*
2414          * currently GuestLAN only supports the ARP assist function
2415          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2416          * thus we say EOPNOTSUPP for this ARP function
2417         */
2418         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2419                 return -EOPNOTSUPP;
2420         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2421                 return -EOPNOTSUPP;
2422         }
2423         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2424                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2425         if (rc) {
2426                 tmp = rc;
2427                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2428                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2429                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2430         }
2431         return rc;
2432 }
2433
2434 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2435 {
2436         struct qeth_card *card = dev->ml_priv;
2437         struct qeth_arp_cache_entry arp_entry;
2438         struct mii_ioctl_data *mii_data;
2439         int rc = 0;
2440
2441         if (!card)
2442                 return -ENODEV;
2443
2444         if ((card->state != CARD_STATE_UP) &&
2445                 (card->state != CARD_STATE_SOFTSETUP))
2446                 return -ENODEV;
2447
2448         switch (cmd) {
2449         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2450                 if (!capable(CAP_NET_ADMIN)) {
2451                         rc = -EPERM;
2452                         break;
2453                 }
2454                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2455                 break;
2456         case SIOC_QETH_ARP_QUERY_INFO:
2457                 if (!capable(CAP_NET_ADMIN)) {
2458                         rc = -EPERM;
2459                         break;
2460                 }
2461                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2462                 break;
2463         case SIOC_QETH_ARP_ADD_ENTRY:
2464                 if (!capable(CAP_NET_ADMIN)) {
2465                         rc = -EPERM;
2466                         break;
2467                 }
2468                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2469                                    sizeof(struct qeth_arp_cache_entry)))
2470                         rc = -EFAULT;
2471                 else
2472                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2473                 break;
2474         case SIOC_QETH_ARP_REMOVE_ENTRY:
2475                 if (!capable(CAP_NET_ADMIN)) {
2476                         rc = -EPERM;
2477                         break;
2478                 }
2479                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2480                                    sizeof(struct qeth_arp_cache_entry)))
2481                         rc = -EFAULT;
2482                 else
2483                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2484                 break;
2485         case SIOC_QETH_ARP_FLUSH_CACHE:
2486                 if (!capable(CAP_NET_ADMIN)) {
2487                         rc = -EPERM;
2488                         break;
2489                 }
2490                 rc = qeth_l3_arp_flush_cache(card);
2491                 break;
2492         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2493                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2494                 break;
2495         case SIOC_QETH_GET_CARD_TYPE:
2496                 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
2497                     !card->info.guestlan)
2498                         return 1;
2499                 return 0;
2500                 break;
2501         case SIOCGMIIPHY:
2502                 mii_data = if_mii(rq);
2503                 mii_data->phy_id = 0;
2504                 break;
2505         case SIOCGMIIREG:
2506                 mii_data = if_mii(rq);
2507                 if (mii_data->phy_id != 0)
2508                         rc = -EINVAL;
2509                 else
2510                         mii_data->val_out = qeth_mdio_read(dev,
2511                                                         mii_data->phy_id,
2512                                                         mii_data->reg_num);
2513                 break;
2514         default:
2515                 rc = -EOPNOTSUPP;
2516         }
2517         if (rc)
2518                 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
2519         return rc;
2520 }
2521
2522 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2523                 struct sk_buff *skb, int ipv, int cast_type)
2524 {
2525         memset(hdr, 0, sizeof(struct qeth_hdr));
2526         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2527         hdr->hdr.l3.ext_flags = 0;
2528
2529         /*
2530          * before we're going to overwrite this location with next hop ip.
2531          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2532          */
2533         if (card->vlangrp && vlan_tx_tag_present(skb)) {
2534                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2535                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2536                 else
2537                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2538                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2539         }
2540
2541         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2542         if (ipv == 4) {
2543                 /* IPv4 */
2544                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2545                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2546                 if ((skb->dst) && (skb->dst->neighbour)) {
2547                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2548                             *((u32 *) skb->dst->neighbour->primary_key);
2549                 } else {
2550                         /* fill in destination address used in ip header */
2551                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2552                                                         ip_hdr(skb)->daddr;
2553                 }
2554         } else if (ipv == 6) {
2555                 /* IPv6 */
2556                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2557                 if (card->info.type == QETH_CARD_TYPE_IQD)
2558                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2559                 if ((skb->dst) && (skb->dst->neighbour)) {
2560                         memcpy(hdr->hdr.l3.dest_addr,
2561                                skb->dst->neighbour->primary_key, 16);
2562                 } else {
2563                         /* fill in destination address used in ip header */
2564                         memcpy(hdr->hdr.l3.dest_addr,
2565                                &ipv6_hdr(skb)->daddr, 16);
2566                 }
2567         } else {
2568                 /* passthrough */
2569                 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2570                         !memcmp(skb->data + sizeof(struct qeth_hdr) +
2571                         sizeof(__u16), skb->dev->broadcast, 6)) {
2572                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2573                                                 QETH_HDR_PASSTHRU;
2574                 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2575                             skb->dev->broadcast, 6)) {
2576                         /* broadcast? */
2577                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2578                                                 QETH_HDR_PASSTHRU;
2579                 } else {
2580                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2581                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2582                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2583                 }
2584         }
2585 }
2586
2587 static void qeth_tso_fill_header(struct qeth_card *card,
2588                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2589 {
2590         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2591         struct tcphdr *tcph = tcp_hdr(skb);
2592         struct iphdr *iph = ip_hdr(skb);
2593         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2594
2595         /*fix header to TSO values ...*/
2596         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2597         /*set values which are fix for the first approach ...*/
2598         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2599         hdr->ext.imb_hdr_no  = 1;
2600         hdr->ext.hdr_type    = 1;
2601         hdr->ext.hdr_version = 1;
2602         hdr->ext.hdr_len     = 28;
2603         /*insert non-fix values */
2604         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2605         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2606         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2607                                        sizeof(struct qeth_hdr_tso));
2608         tcph->check = 0;
2609         if (skb->protocol == ETH_P_IPV6) {
2610                 ip6h->payload_len = 0;
2611                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2612                                                0, IPPROTO_TCP, 0);
2613         } else {
2614                 /*OSA want us to set these values ...*/
2615                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2616                                          0, IPPROTO_TCP, 0);
2617                 iph->tot_len = 0;
2618                 iph->check = 0;
2619         }
2620 }
2621
2622 static void qeth_tx_csum(struct sk_buff *skb)
2623 {
2624         __wsum csum;
2625         int offset;
2626
2627         skb_set_transport_header(skb, skb->csum_start - skb_headroom(skb));
2628         offset = skb->csum_start - skb_headroom(skb);
2629         BUG_ON(offset >= skb_headlen(skb));
2630         csum = skb_checksum(skb, offset, skb->len - offset, 0);
2631
2632         offset += skb->csum_offset;
2633         BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
2634         *(__sum16 *)(skb->data + offset) = csum_fold(csum);
2635 }
2636
2637 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2638 {
2639         int rc;
2640         u16 *tag;
2641         struct qeth_hdr *hdr = NULL;
2642         int elements_needed = 0;
2643         int elems;
2644         struct qeth_card *card = dev->ml_priv;
2645         struct sk_buff *new_skb = NULL;
2646         int ipv = qeth_get_ip_version(skb);
2647         int cast_type = qeth_get_cast_type(card, skb);
2648         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2649                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2650         int tx_bytes = skb->len;
2651         enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
2652         int data_offset = -1;
2653         int nr_frags;
2654
2655         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2656             (skb->protocol != htons(ETH_P_IPV6)) &&
2657             (skb->protocol != htons(ETH_P_IP)))
2658                         goto tx_drop;
2659
2660         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2661                 card->stats.tx_carrier_errors++;
2662                 goto tx_drop;
2663         }
2664
2665         if ((cast_type == RTN_BROADCAST) &&
2666             (card->info.broadcast_capable == 0))
2667                 goto tx_drop;
2668
2669         if (card->options.performance_stats) {
2670                 card->perf_stats.outbound_cnt++;
2671                 card->perf_stats.outbound_start_time = qeth_get_micros();
2672         }
2673
2674         if (skb_is_gso(skb))
2675                 large_send = card->options.large_send;
2676         else
2677                 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2678                         qeth_tx_csum(skb);
2679                         if (card->options.performance_stats)
2680                                 card->perf_stats.tx_csum++;
2681                 }
2682
2683         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2684             (skb_shinfo(skb)->nr_frags == 0)) {
2685                 new_skb = skb;
2686                 data_offset = ETH_HLEN;
2687                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2688                 if (!hdr)
2689                         goto tx_drop;
2690                 elements_needed++;
2691         } else {
2692                 /* create a clone with writeable headroom */
2693                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2694                                         + VLAN_HLEN);
2695                 if (!new_skb)
2696                         goto tx_drop;
2697         }
2698
2699         if (card->info.type == QETH_CARD_TYPE_IQD) {
2700                 if (data_offset < 0)
2701                         skb_pull(new_skb, ETH_HLEN);
2702         } else {
2703                 if (new_skb->protocol == htons(ETH_P_IP)) {
2704                         if (card->dev->type == ARPHRD_IEEE802_TR)
2705                                 skb_pull(new_skb, TR_HLEN);
2706                         else
2707                                 skb_pull(new_skb, ETH_HLEN);
2708                 }
2709
2710                 if (new_skb->protocol == ETH_P_IPV6 && card->vlangrp &&
2711                                 vlan_tx_tag_present(new_skb)) {
2712                         skb_push(new_skb, VLAN_HLEN);
2713                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2714                         skb_copy_to_linear_data_offset(new_skb, 4,
2715                                 new_skb->data + 8, 4);
2716                         skb_copy_to_linear_data_offset(new_skb, 8,
2717                                 new_skb->data + 12, 4);
2718                         tag = (u16 *)(new_skb->data + 12);
2719                         *tag = __constant_htons(ETH_P_8021Q);
2720                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2721                         new_skb->vlan_tci = 0;
2722                 }
2723         }
2724
2725         netif_stop_queue(dev);
2726
2727         /* fix hardware limitation: as long as we do not have sbal
2728          * chaining we can not send long frag lists
2729          */
2730         if ((large_send == QETH_LARGE_SEND_TSO) &&
2731             ((skb_shinfo(new_skb)->nr_frags + 2) > 16)) {
2732                 if (skb_linearize(new_skb))
2733                         goto tx_drop;
2734         }
2735
2736         if ((large_send == QETH_LARGE_SEND_TSO) &&
2737             (cast_type == RTN_UNSPEC)) {
2738                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2739                                                 sizeof(struct qeth_hdr_tso));
2740                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2741                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2742                 qeth_tso_fill_header(card, hdr, new_skb);
2743                 elements_needed++;
2744         } else {
2745                 if (data_offset < 0) {
2746                         hdr = (struct qeth_hdr *)skb_push(new_skb,
2747                                                 sizeof(struct qeth_hdr));
2748                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2749                                                 cast_type);
2750                 } else {
2751                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2752                                                 cast_type);
2753                         hdr->hdr.l3.length = new_skb->len - data_offset;
2754                 }
2755         }
2756
2757         elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
2758                                                  elements_needed);
2759         if (!elems) {
2760                 if (data_offset >= 0)
2761                         kmem_cache_free(qeth_core_header_cache, hdr);
2762                 goto tx_drop;
2763         }
2764         elements_needed += elems;
2765         nr_frags = skb_shinfo(new_skb)->nr_frags;
2766
2767         if (card->info.type != QETH_CARD_TYPE_IQD)
2768                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
2769                                          elements_needed);
2770         else
2771                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2772                                         elements_needed, data_offset, 0);
2773
2774         if (!rc) {
2775                 card->stats.tx_packets++;
2776                 card->stats.tx_bytes += tx_bytes;
2777                 if (new_skb != skb)
2778                         dev_kfree_skb_any(skb);
2779                 if (card->options.performance_stats) {
2780                         if (large_send != QETH_LARGE_SEND_NO) {
2781                                 card->perf_stats.large_send_bytes += tx_bytes;
2782                                 card->perf_stats.large_send_cnt++;
2783                         }
2784                         if (nr_frags) {
2785                                 card->perf_stats.sg_skbs_sent++;
2786                                 /* nr_frags + skb->data */
2787                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
2788                         }
2789                 }
2790         } else {
2791                 if (data_offset >= 0)
2792                         kmem_cache_free(qeth_core_header_cache, hdr);
2793
2794                 if (rc == -EBUSY) {
2795                         if (new_skb != skb)
2796                                 dev_kfree_skb_any(new_skb);
2797                         return NETDEV_TX_BUSY;
2798                 } else
2799                         goto tx_drop;
2800         }
2801
2802         netif_wake_queue(dev);
2803         if (card->options.performance_stats)
2804                 card->perf_stats.outbound_time += qeth_get_micros() -
2805                         card->perf_stats.outbound_start_time;
2806         return rc;
2807
2808 tx_drop:
2809         card->stats.tx_dropped++;
2810         card->stats.tx_errors++;
2811         if ((new_skb != skb) && new_skb)
2812                 dev_kfree_skb_any(new_skb);
2813         dev_kfree_skb_any(skb);
2814         netif_wake_queue(dev);
2815         return NETDEV_TX_OK;
2816 }
2817
2818 static int qeth_l3_open(struct net_device *dev)
2819 {
2820         struct qeth_card *card = dev->ml_priv;
2821
2822         QETH_DBF_TEXT(TRACE, 4, "qethopen");
2823         if (card->state != CARD_STATE_SOFTSETUP)
2824                 return -ENODEV;
2825         card->data.state = CH_STATE_UP;
2826         card->state = CARD_STATE_UP;
2827         netif_start_queue(dev);
2828
2829         if (!card->lan_online && netif_carrier_ok(dev))
2830                 netif_carrier_off(dev);
2831         return 0;
2832 }
2833
2834 static int qeth_l3_stop(struct net_device *dev)
2835 {
2836         struct qeth_card *card = dev->ml_priv;
2837
2838         QETH_DBF_TEXT(TRACE, 4, "qethstop");
2839         netif_tx_disable(dev);
2840         if (card->state == CARD_STATE_UP)
2841                 card->state = CARD_STATE_SOFTSETUP;
2842         return 0;
2843 }
2844
2845 static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev)
2846 {
2847         struct qeth_card *card = dev->ml_priv;
2848
2849         return (card->options.checksum_type == HW_CHECKSUMMING);
2850 }
2851
2852 static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data)
2853 {
2854         struct qeth_card *card = dev->ml_priv;
2855         enum qeth_card_states old_state;
2856         enum qeth_checksum_types csum_type;
2857
2858         if ((card->state != CARD_STATE_UP) &&
2859             (card->state != CARD_STATE_DOWN))
2860                 return -EPERM;
2861
2862         if (data)
2863                 csum_type = HW_CHECKSUMMING;
2864         else
2865                 csum_type = SW_CHECKSUMMING;
2866
2867         if (card->options.checksum_type != csum_type) {
2868                 old_state = card->state;
2869                 if (card->state == CARD_STATE_UP)
2870                         __qeth_l3_set_offline(card->gdev, 1);
2871                 card->options.checksum_type = csum_type;
2872                 if (old_state == CARD_STATE_UP)
2873                         __qeth_l3_set_online(card->gdev, 1);
2874         }
2875         return 0;
2876 }
2877
2878 static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data)
2879 {
2880         struct qeth_card *card = dev->ml_priv;
2881
2882         if (data) {
2883                 if (card->options.large_send == QETH_LARGE_SEND_NO) {
2884                         if (card->info.type == QETH_CARD_TYPE_IQD)
2885                                 return -EPERM;
2886                         else
2887                                 card->options.large_send = QETH_LARGE_SEND_TSO;
2888                         dev->features |= NETIF_F_TSO;
2889                 }
2890         } else {
2891                 dev->features &= ~NETIF_F_TSO;
2892                 card->options.large_send = QETH_LARGE_SEND_NO;
2893         }
2894         return 0;
2895 }
2896
2897 static struct ethtool_ops qeth_l3_ethtool_ops = {
2898         .get_link = ethtool_op_get_link,
2899         .get_tx_csum = ethtool_op_get_tx_csum,
2900         .set_tx_csum = ethtool_op_set_tx_hw_csum,
2901         .get_rx_csum = qeth_l3_ethtool_get_rx_csum,
2902         .set_rx_csum = qeth_l3_ethtool_set_rx_csum,
2903         .get_sg      = ethtool_op_get_sg,
2904         .set_sg      = ethtool_op_set_sg,
2905         .get_tso     = ethtool_op_get_tso,
2906         .set_tso     = qeth_l3_ethtool_set_tso,
2907         .get_strings = qeth_core_get_strings,
2908         .get_ethtool_stats = qeth_core_get_ethtool_stats,
2909         .get_stats_count = qeth_core_get_stats_count,
2910         .get_drvinfo = qeth_core_get_drvinfo,
2911         .get_settings = qeth_core_ethtool_get_settings,
2912 };
2913
2914 /*
2915  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2916  * NOARP on the netdevice is no option because it also turns off neighbor
2917  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2918  * arp resolution but we want the hard header (packet socket will work
2919  * e.g. tcpdump)
2920  */
2921 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2922 {
2923         n->nud_state = NUD_NOARP;
2924         memcpy(n->ha, "FAKELL", 6);
2925         n->output = n->ops->connected_output;
2926         return 0;
2927 }
2928
2929 static int
2930 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2931 {
2932         if (np->tbl->family == AF_INET)
2933                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2934
2935         return 0;
2936 }
2937
2938 static const struct net_device_ops qeth_l3_netdev_ops = {
2939         .ndo_open               = qeth_l3_open,
2940         .ndo_stop               = qeth_l3_stop,
2941         .ndo_get_stats          = qeth_get_stats,
2942         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2943         .ndo_validate_addr      = eth_validate_addr,
2944         .ndo_set_multicast_list = qeth_l3_set_multicast_list,
2945         .ndo_do_ioctl           = qeth_l3_do_ioctl,
2946         .ndo_change_mtu         = qeth_change_mtu,
2947         .ndo_vlan_rx_register   = qeth_l3_vlan_rx_register,
2948         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2949         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2950         .ndo_tx_timeout         = qeth_tx_timeout,
2951 };
2952
2953 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2954         .ndo_open               = qeth_l3_open,
2955         .ndo_stop               = qeth_l3_stop,
2956         .ndo_get_stats          = qeth_get_stats,
2957         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2958         .ndo_validate_addr      = eth_validate_addr,
2959         .ndo_set_multicast_list = qeth_l3_set_multicast_list,
2960         .ndo_do_ioctl           = qeth_l3_do_ioctl,
2961         .ndo_change_mtu         = qeth_change_mtu,
2962         .ndo_vlan_rx_register   = qeth_l3_vlan_rx_register,
2963         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2964         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2965         .ndo_tx_timeout         = qeth_tx_timeout,
2966         .ndo_neigh_setup        = qeth_l3_neigh_setup,
2967 };
2968
2969 static int qeth_l3_setup_netdev(struct qeth_card *card)
2970 {
2971         if (card->info.type == QETH_CARD_TYPE_OSAE) {
2972                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2973                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2974 #ifdef CONFIG_TR
2975                         card->dev = alloc_trdev(0);
2976 #endif
2977                         if (!card->dev)
2978                                 return -ENODEV;
2979                         card->dev->netdev_ops = &qeth_l3_netdev_ops;
2980                 } else {
2981                         card->dev = alloc_etherdev(0);
2982                         if (!card->dev)
2983                                 return -ENODEV;
2984                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2985
2986                         /*IPv6 address autoconfiguration stuff*/
2987                         qeth_l3_get_unique_id(card);
2988                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2989                                 card->dev->dev_id = card->info.unique_id &
2990                                                          0xffff;
2991                 }
2992         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2993                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
2994                 if (!card->dev)
2995                         return -ENODEV;
2996                 card->dev->flags |= IFF_NOARP;
2997                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2998                 qeth_l3_iqd_read_initial_mac(card);
2999         } else
3000                 return -ENODEV;
3001
3002         card->dev->ml_priv = card;
3003         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3004         card->dev->mtu = card->info.initial_mtu;
3005         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3006         card->dev->features |=  NETIF_F_HW_VLAN_TX |
3007                                 NETIF_F_HW_VLAN_RX |
3008                                 NETIF_F_HW_VLAN_FILTER;
3009
3010         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3011         return register_netdev(card->dev);
3012 }
3013
3014 static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
3015                 unsigned int qdio_err, unsigned int queue, int first_element,
3016                 int count, unsigned long card_ptr)
3017 {
3018         struct net_device *net_dev;
3019         struct qeth_card *card;
3020         struct qeth_qdio_buffer *buffer;
3021         int index;
3022         int i;
3023
3024         card = (struct qeth_card *) card_ptr;
3025         net_dev = card->dev;
3026         if (card->options.performance_stats) {
3027                 card->perf_stats.inbound_cnt++;
3028                 card->perf_stats.inbound_start_time = qeth_get_micros();
3029         }
3030         if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3031                 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
3032                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
3033                 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X",
3034                                 first_element, count);
3035                 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
3036                 qeth_schedule_recovery(card);
3037                 return;
3038         }
3039         for (i = first_element; i < (first_element + count); ++i) {
3040                 index = i % QDIO_MAX_BUFFERS_PER_Q;
3041                 buffer = &card->qdio.in_q->bufs[index];
3042                 if (!(qdio_err &&
3043                       qeth_check_qdio_errors(buffer->buffer,
3044                                              qdio_err, "qinerr")))
3045                         qeth_l3_process_inbound_buffer(card, buffer, index);
3046                 /* clear buffer and give back to hardware */
3047                 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
3048                 qeth_queue_input_buffer(card, index);
3049         }
3050         if (card->options.performance_stats)
3051                 card->perf_stats.inbound_time += qeth_get_micros() -
3052                         card->perf_stats.inbound_start_time;
3053 }
3054
3055 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3056 {
3057         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3058
3059         qeth_l3_create_device_attributes(&gdev->dev);
3060         card->options.layer2 = 0;
3061         card->discipline.input_handler = (qdio_handler_t *)
3062                 qeth_l3_qdio_input_handler;
3063         card->discipline.output_handler = (qdio_handler_t *)
3064                 qeth_qdio_output_handler;
3065         card->discipline.recover = qeth_l3_recover;
3066         return 0;
3067 }
3068
3069 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3070 {
3071         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3072
3073         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3074
3075         if (cgdev->state == CCWGROUP_ONLINE) {
3076                 card->use_hard_stop = 1;
3077                 qeth_l3_set_offline(cgdev);
3078         }
3079
3080         if (card->dev) {
3081                 unregister_netdev(card->dev);
3082                 card->dev = NULL;
3083         }
3084
3085         qeth_l3_remove_device_attributes(&cgdev->dev);
3086         qeth_l3_clear_ip_list(card, 0, 0);
3087         qeth_l3_clear_ipato_list(card);
3088         return;
3089 }
3090
3091 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3092 {
3093         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3094         int rc = 0;
3095         enum qeth_card_states recover_flag;
3096
3097         BUG_ON(!card);
3098         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3099         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3100
3101         qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
3102
3103         recover_flag = card->state;
3104         rc = ccw_device_set_online(CARD_RDEV(card));
3105         if (rc) {
3106                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3107                 return -EIO;
3108         }
3109         rc = ccw_device_set_online(CARD_WDEV(card));
3110         if (rc) {
3111                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3112                 return -EIO;
3113         }
3114         rc = ccw_device_set_online(CARD_DDEV(card));
3115         if (rc) {
3116                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3117                 return -EIO;
3118         }
3119
3120         rc = qeth_core_hardsetup_card(card);
3121         if (rc) {
3122                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3123                 goto out_remove;
3124         }
3125
3126         qeth_l3_query_ipassists(card, QETH_PROT_IPV4);
3127
3128         if (!card->dev && qeth_l3_setup_netdev(card))
3129                 goto out_remove;
3130
3131         card->state = CARD_STATE_HARDSETUP;
3132         qeth_print_status_message(card);
3133
3134         /* softsetup */
3135         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3136
3137         rc = qeth_send_startlan(card);
3138         if (rc) {
3139                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3140                 if (rc == 0xe080) {
3141                         dev_warn(&card->gdev->dev,
3142                                 "The LAN is offline\n");
3143                         card->lan_online = 0;
3144                 }
3145                 return rc;
3146         } else
3147                 card->lan_online = 1;
3148         qeth_set_large_send(card, card->options.large_send);
3149
3150         rc = qeth_l3_setadapter_parms(card);
3151         if (rc)
3152                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3153         rc = qeth_l3_start_ipassists(card);
3154         if (rc)
3155                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3156         rc = qeth_l3_setrouting_v4(card);
3157         if (rc)
3158                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3159         rc = qeth_l3_setrouting_v6(card);
3160         if (rc)
3161                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3162         netif_tx_disable(card->dev);
3163
3164         rc = qeth_init_qdio_queues(card);
3165         if (rc) {
3166                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3167                 goto out_remove;
3168         }
3169         card->state = CARD_STATE_SOFTSETUP;
3170         netif_carrier_on(card->dev);
3171
3172         qeth_set_allowed_threads(card, 0xffffffff, 0);
3173         if (recover_flag == CARD_STATE_RECOVER) {
3174                 if (recovery_mode)
3175                         qeth_l3_open(card->dev);
3176                 else {
3177                         rtnl_lock();
3178                         dev_open(card->dev);
3179                         rtnl_unlock();
3180                 }
3181                 qeth_l3_set_multicast_list(card->dev);
3182         }
3183         /* let user_space know that device is online */
3184         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3185         return 0;
3186 out_remove:
3187         card->use_hard_stop = 1;
3188         qeth_l3_stop_card(card, 0);
3189         ccw_device_set_offline(CARD_DDEV(card));
3190         ccw_device_set_offline(CARD_WDEV(card));
3191         ccw_device_set_offline(CARD_RDEV(card));
3192         if (recover_flag == CARD_STATE_RECOVER)
3193                 card->state = CARD_STATE_RECOVER;
3194         else
3195                 card->state = CARD_STATE_DOWN;
3196         return -ENODEV;
3197 }
3198
3199 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3200 {
3201         return __qeth_l3_set_online(gdev, 0);
3202 }
3203
3204 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3205                         int recovery_mode)
3206 {
3207         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3208         int rc = 0, rc2 = 0, rc3 = 0;
3209         enum qeth_card_states recover_flag;
3210
3211         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3212         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3213
3214         if (card->dev && netif_carrier_ok(card->dev))
3215                 netif_carrier_off(card->dev);
3216         recover_flag = card->state;
3217         qeth_l3_stop_card(card, recovery_mode);
3218         rc  = ccw_device_set_offline(CARD_DDEV(card));
3219         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3220         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3221         if (!rc)
3222                 rc = (rc2) ? rc2 : rc3;
3223         if (rc)
3224                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3225         if (recover_flag == CARD_STATE_UP)
3226                 card->state = CARD_STATE_RECOVER;
3227         /* let user_space know that device is offline */
3228         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3229         return 0;
3230 }
3231
3232 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3233 {
3234         return __qeth_l3_set_offline(cgdev, 0);
3235 }
3236
3237 static int qeth_l3_recover(void *ptr)
3238 {
3239         struct qeth_card *card;
3240         int rc = 0;
3241
3242         card = (struct qeth_card *) ptr;
3243         QETH_DBF_TEXT(TRACE, 2, "recover1");
3244         QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
3245         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3246                 return 0;
3247         QETH_DBF_TEXT(TRACE, 2, "recover2");
3248         dev_warn(&card->gdev->dev,
3249                 "A recovery process has been started for the device\n");
3250         card->use_hard_stop = 1;
3251         __qeth_l3_set_offline(card->gdev, 1);
3252         rc = __qeth_l3_set_online(card->gdev, 1);
3253         /* don't run another scheduled recovery */
3254         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3255         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3256         if (!rc)
3257                 dev_info(&card->gdev->dev,
3258                         "Device successfully recovered!\n");
3259         else {
3260                 rtnl_lock();
3261                 dev_close(card->dev);
3262                 rtnl_unlock();
3263                 dev_warn(&card->gdev->dev, "The qeth device driver "
3264                         "failed to recover an error on the device\n");
3265         }
3266         return 0;
3267 }
3268
3269 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3270 {
3271         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3272         qeth_l3_clear_ip_list(card, 0, 0);
3273         qeth_qdio_clear_card(card, 0);
3274         qeth_clear_qdio_buffers(card);
3275 }
3276
3277 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3278         .probe = qeth_l3_probe_device,
3279         .remove = qeth_l3_remove_device,
3280         .set_online = qeth_l3_set_online,
3281         .set_offline = qeth_l3_set_offline,
3282         .shutdown = qeth_l3_shutdown,
3283 };
3284 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3285
3286 static int qeth_l3_ip_event(struct notifier_block *this,
3287                             unsigned long event, void *ptr)
3288 {
3289         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3290         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3291         struct qeth_ipaddr *addr;
3292         struct qeth_card *card;
3293
3294         if (dev_net(dev) != &init_net)
3295                 return NOTIFY_DONE;
3296
3297         QETH_DBF_TEXT(TRACE, 3, "ipevent");
3298         card = qeth_l3_get_card_from_dev(dev);
3299         if (!card)
3300                 return NOTIFY_DONE;
3301
3302         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3303         if (addr != NULL) {
3304                 addr->u.a4.addr = ifa->ifa_address;
3305                 addr->u.a4.mask = ifa->ifa_mask;
3306                 addr->type = QETH_IP_TYPE_NORMAL;
3307         } else
3308                 goto out;
3309
3310         switch (event) {
3311         case NETDEV_UP:
3312                 if (!qeth_l3_add_ip(card, addr))
3313                         kfree(addr);
3314                 break;
3315         case NETDEV_DOWN:
3316                 if (!qeth_l3_delete_ip(card, addr))
3317                         kfree(addr);
3318                 break;
3319         default:
3320                 break;
3321         }
3322         qeth_l3_set_ip_addr_list(card);
3323 out:
3324         return NOTIFY_DONE;
3325 }
3326
3327 static struct notifier_block qeth_l3_ip_notifier = {
3328         qeth_l3_ip_event,
3329         NULL,
3330 };
3331
3332 #ifdef CONFIG_QETH_IPV6
3333 /**
3334  * IPv6 event handler
3335  */
3336 static int qeth_l3_ip6_event(struct notifier_block *this,
3337                              unsigned long event, void *ptr)
3338 {
3339         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3340         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3341         struct qeth_ipaddr *addr;
3342         struct qeth_card *card;
3343
3344         QETH_DBF_TEXT(TRACE, 3, "ip6event");
3345
3346         card = qeth_l3_get_card_from_dev(dev);
3347         if (!card)
3348                 return NOTIFY_DONE;
3349         if (!qeth_is_supported(card, IPA_IPV6))
3350                 return NOTIFY_DONE;
3351
3352         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3353         if (addr != NULL) {
3354                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3355                 addr->u.a6.pfxlen = ifa->prefix_len;
3356                 addr->type = QETH_IP_TYPE_NORMAL;
3357         } else
3358                 goto out;
3359
3360         switch (event) {
3361         case NETDEV_UP:
3362                 if (!qeth_l3_add_ip(card, addr))
3363                         kfree(addr);
3364                 break;
3365         case NETDEV_DOWN:
3366                 if (!qeth_l3_delete_ip(card, addr))
3367                         kfree(addr);
3368                 break;
3369         default:
3370                 break;
3371         }
3372         qeth_l3_set_ip_addr_list(card);
3373 out:
3374         return NOTIFY_DONE;
3375 }
3376
3377 static struct notifier_block qeth_l3_ip6_notifier = {
3378         qeth_l3_ip6_event,
3379         NULL,
3380 };
3381 #endif
3382
3383 static int qeth_l3_register_notifiers(void)
3384 {
3385         int rc;
3386
3387         QETH_DBF_TEXT(TRACE, 5, "regnotif");
3388         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3389         if (rc)
3390                 return rc;
3391 #ifdef CONFIG_QETH_IPV6
3392         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3393         if (rc) {
3394                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3395                 return rc;
3396         }
3397 #else
3398         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3399 #endif
3400         return 0;
3401 }
3402
3403 static void qeth_l3_unregister_notifiers(void)
3404 {
3405
3406         QETH_DBF_TEXT(TRACE, 5, "unregnot");
3407         BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3408 #ifdef CONFIG_QETH_IPV6
3409         BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3410 #endif /* QETH_IPV6 */
3411 }
3412
3413 static int __init qeth_l3_init(void)
3414 {
3415         int rc = 0;
3416
3417         pr_info("register layer 3 discipline\n");
3418         rc = qeth_l3_register_notifiers();
3419         return rc;
3420 }
3421
3422 static void __exit qeth_l3_exit(void)
3423 {
3424         qeth_l3_unregister_notifiers();
3425         pr_info("unregister layer 3 discipline\n");
3426 }
3427
3428 module_init(qeth_l3_init);
3429 module_exit(qeth_l3_exit);
3430 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3431 MODULE_DESCRIPTION("qeth layer 3 discipline");
3432 MODULE_LICENSE("GPL");