drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/bitops.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/mii.h>
  20 #include <linux/ip.h>
  21 #include <linux/ipv6.h>
  22 #include <linux/inetdevice.h>
  23 #include <linux/igmp.h>
  24 #include <linux/slab.h>
  25 #include <linux/if_vlan.h>
  26
  27 #include <net/ip.h>
  28 #include <net/arp.h>
  29 #include <net/route.h>
  30 #include <net/ip6_fib.h>
  31 #include <net/ip6_checksum.h>
  32 #include <net/iucv/af_iucv.h>
  33 #include <linux/hashtable.h>
  34
  35 #include "qeth_l3.h"
  36
  37
  38 static int qeth_l3_set_offline(struct ccwgroup_device *);
  39 static int qeth_l3_recover(void *);
  40 static int qeth_l3_stop(struct net_device *);
  41 static void qeth_l3_set_multicast_list(struct net_device *);
  42 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  43 static int qeth_l3_register_addr_entry(struct qeth_card *,
  44                 struct qeth_ipaddr *);
  45 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  46                 struct qeth_ipaddr *);
  47 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  48 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  49
  50 static int qeth_l3_isxdigit(char *buf)
  51 {
  52         while (*buf) {
  53                 if (!isxdigit(*buf++))
  54                         return 0;
  55         }
  56         return 1;
  57 }
  58
  59 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  60 {
  61         sprintf(buf, "%pI4", addr);
  62 }
  63
  64 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  65 {
  66         int count = 0, rc = 0;
  67         unsigned int in[4];
  68         char c;
  69
  70         rc = sscanf(buf, "%u.%u.%u.%u%c",
  71                     &in[0], &in[1], &in[2], &in[3], &c);
  72         if (rc != 4 && (rc != 5 || c != '\n'))
  73                 return -EINVAL;
  74         for (count = 0; count < 4; count++) {
  75                 if (in[count] > 255)
  76                         return -EINVAL;
  77                 addr[count] = in[count];
  78         }
  79         return 0;
  80 }
  81
  82 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  83 {
  84         sprintf(buf, "%pI6", addr);
  85 }
  86
  87 static 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 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 inline int
 209 qeth_l3_ipaddrs_is_equal(struct qeth_ipaddr *addr1, struct qeth_ipaddr *addr2)
 210 {
 211         return addr1->proto == addr2->proto &&
 212                 !memcmp(&addr1->u, &addr2->u, sizeof(addr1->u))  &&
 213                 !memcmp(&addr1->mac, &addr2->mac, sizeof(addr1->mac));
 214 }
 215
 216 static struct qeth_ipaddr *
 217 qeth_l3_ip_from_hash(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 218 {
 219         struct qeth_ipaddr *addr;
 220
 221         if (tmp_addr->is_multicast) {
 222                 hash_for_each_possible(card->ip_mc_htable,  addr,
 223                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 224                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 225                                 return addr;
 226         } else {
 227                 hash_for_each_possible(card->ip_htable,  addr,
 228                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 229                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 230                                 return addr;
 231         }
 232
 233         return NULL;
 234 }
 235
 236 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 237 {
 238         int rc = 0;
 239         struct qeth_ipaddr *addr;
 240
 241         QETH_CARD_TEXT(card, 4, "delip");
 242
 243         if (tmp_addr->proto == QETH_PROT_IPV4)
 244                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 245         else {
 246                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 247                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 248         }
 249
 250         addr = qeth_l3_ip_from_hash(card, tmp_addr);
 251         if (!addr)
 252                 return -ENOENT;
 253
 254         addr->ref_counter--;
 255         if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
 256                 return rc;
 257         if (addr->in_progress)
 258                 return -EINPROGRESS;
 259
 260         if (!qeth_card_hw_is_reachable(card)) {
 261                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
 262                 return 0;
 263         }
 264
 265         rc = qeth_l3_deregister_addr_entry(card, addr);
 266
 267         hash_del(&addr->hnode);
 268         kfree(addr);
 269
 270         return rc;
 271 }
 272
 273 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 274 {
 275         int rc = 0;
 276         struct qeth_ipaddr *addr;
 277
 278         QETH_CARD_TEXT(card, 4, "addip");
 279
 280         if (tmp_addr->proto == QETH_PROT_IPV4)
 281                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 282         else {
 283                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 284                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 285         }
 286
 287         addr = qeth_l3_ip_from_hash(card, tmp_addr);
 288         if (!addr) {
 289                 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
 290                 if (!addr)
 291                         return -ENOMEM;
 292
 293                 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
 294                 addr->ref_counter = 1;
 295
 296                 if (addr->type == QETH_IP_TYPE_NORMAL  &&
 297                                 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 298                         QETH_CARD_TEXT(card, 2, "tkovaddr");
 299                         addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 300                 }
 301                 hash_add(card->ip_htable, &addr->hnode,
 302                                 qeth_l3_ipaddr_hash(addr));
 303
 304                 if (!qeth_card_hw_is_reachable(card)) {
 305                         addr->disp_flag = QETH_DISP_ADDR_ADD;
 306                         return 0;
 307                 }
 308
 309                 /* qeth_l3_register_addr_entry can go to sleep
 310                  * if we add a IPV4 addr. It is caused by the reason
 311                  * that SETIP ipa cmd starts ARP staff for IPV4 addr.
 312                  * Thus we should unlock spinlock, and make a protection
 313                  * using in_progress variable to indicate that there is
 314                  * an hardware operation with this IPV4 address
 315                  */
 316                 if (addr->proto == QETH_PROT_IPV4) {
 317                         addr->in_progress = 1;
 318                         spin_unlock_bh(&card->ip_lock);
 319                         rc = qeth_l3_register_addr_entry(card, addr);
 320                         spin_lock_bh(&card->ip_lock);
 321                         addr->in_progress = 0;
 322                 } else
 323                         rc = qeth_l3_register_addr_entry(card, addr);
 324
 325                 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
 326                                 (rc == IPA_RC_LAN_OFFLINE)) {
 327                         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 328                         if (addr->ref_counter < 1) {
 329                                 qeth_l3_delete_ip(card, addr);
 330                                 kfree(addr);
 331                         }
 332                 } else {
 333                         hash_del(&addr->hnode);
 334                         kfree(addr);
 335                 }
 336         } else {
 337                         if (addr->type == QETH_IP_TYPE_NORMAL)
 338                                 addr->ref_counter++;
 339         }
 340
 341         return rc;
 342 }
 343
 344
 345 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 346                                 enum qeth_prot_versions prot)
 347 {
 348         struct qeth_ipaddr *addr;
 349
 350         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 351         if (!addr)
 352                 return NULL;
 353
 354         addr->type = QETH_IP_TYPE_NORMAL;
 355         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 356         addr->proto = prot;
 357
 358         return addr;
 359 }
 360
 361 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 362 {
 363         struct qeth_ipaddr *addr;
 364         struct hlist_node *tmp;
 365         int i;
 366
 367         QETH_CARD_TEXT(card, 4, "clearip");
 368
 369         if (recover && card->options.sniffer)
 370                 return;
 371
 372         spin_lock_bh(&card->ip_lock);
 373
 374         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 375                 if (!recover) {
 376                         hash_del(&addr->hnode);
 377                         kfree(addr);
 378                         continue;
 379                 }
 380                 addr->disp_flag = QETH_DISP_ADDR_ADD;
 381         }
 382
 383         spin_unlock_bh(&card->ip_lock);
 384
 385         spin_lock_bh(&card->mclock);
 386
 387         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
 388                 hash_del(&addr->hnode);
 389                 kfree(addr);
 390         }
 391
 392         spin_unlock_bh(&card->mclock);
 393
 394
 395 }
 396 static void qeth_l3_recover_ip(struct qeth_card *card)
 397 {
 398         struct qeth_ipaddr *addr;
 399         struct hlist_node *tmp;
 400         int i;
 401         int rc;
 402
 403         QETH_CARD_TEXT(card, 4, "recovrip");
 404
 405         spin_lock_bh(&card->ip_lock);
 406
 407         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 408                 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
 409                         qeth_l3_deregister_addr_entry(card, addr);
 410                         hash_del(&addr->hnode);
 411                         kfree(addr);
 412                 } else if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
 413                         if (addr->proto == QETH_PROT_IPV4) {
 414                                 addr->in_progress = 1;
 415                                 spin_unlock_bh(&card->ip_lock);
 416                                 rc = qeth_l3_register_addr_entry(card, addr);
 417                                 spin_lock_bh(&card->ip_lock);
 418                                 addr->in_progress = 0;
 419                         } else
 420                                 rc = qeth_l3_register_addr_entry(card, addr);
 421
 422                         if (!rc) {
 423                                 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 424                                 if (addr->ref_counter < 1)
 425                                         qeth_l3_delete_ip(card, addr);
 426                         } else {
 427                                 hash_del(&addr->hnode);
 428                                 kfree(addr);
 429                         }
 430                 }
 431         }
 432
 433         spin_unlock_bh(&card->ip_lock);
 434
 435 }
 436
 437 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 438                         struct qeth_ipaddr *addr, int ipacmd)
 439 {
 440         int rc;
 441         struct qeth_cmd_buffer *iob;
 442         struct qeth_ipa_cmd *cmd;
 443
 444         QETH_CARD_TEXT(card, 4, "setdelmc");
 445
 446         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 447         if (!iob)
 448                 return -ENOMEM;
 449         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 450         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 451         if (addr->proto == QETH_PROT_IPV6)
 452                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 453                        sizeof(struct in6_addr));
 454         else
 455                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 456
 457         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 458
 459         return rc;
 460 }
 461
 462 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 463 {
 464         int i, j;
 465         for (i = 0; i < 16; i++) {
 466                 j = (len) - (i * 8);
 467                 if (j >= 8)
 468                         netmask[i] = 0xff;
 469                 else if (j > 0)
 470                         netmask[i] = (u8)(0xFF00 >> j);
 471                 else
 472                         netmask[i] = 0;
 473         }
 474 }
 475
 476 static int qeth_l3_send_setdelip(struct qeth_card *card,
 477                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 478 {
 479         int rc;
 480         struct qeth_cmd_buffer *iob;
 481         struct qeth_ipa_cmd *cmd;
 482         __u8 netmask[16];
 483
 484         QETH_CARD_TEXT(card, 4, "setdelip");
 485         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 486
 487         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 488         if (!iob)
 489                 return -ENOMEM;
 490         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 491         if (addr->proto == QETH_PROT_IPV6) {
 492                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 493                        sizeof(struct in6_addr));
 494                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 495                 memcpy(cmd->data.setdelip6.mask, netmask,
 496                        sizeof(struct in6_addr));
 497                 cmd->data.setdelip6.flags = flags;
 498         } else {
 499                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 500                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 501                 cmd->data.setdelip4.flags = flags;
 502         }
 503
 504         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 505
 506         return rc;
 507 }
 508
 509 static int qeth_l3_send_setrouting(struct qeth_card *card,
 510         enum qeth_routing_types type, enum qeth_prot_versions prot)
 511 {
 512         int rc;
 513         struct qeth_ipa_cmd *cmd;
 514         struct qeth_cmd_buffer *iob;
 515
 516         QETH_CARD_TEXT(card, 4, "setroutg");
 517         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 518         if (!iob)
 519                 return -ENOMEM;
 520         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 521         cmd->data.setrtg.type = (type);
 522         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 523
 524         return rc;
 525 }
 526
 527 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 528                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 529 {
 530         if (card->info.type == QETH_CARD_TYPE_IQD) {
 531                 switch (*type) {
 532                 case NO_ROUTER:
 533                 case PRIMARY_CONNECTOR:
 534                 case SECONDARY_CONNECTOR:
 535                 case MULTICAST_ROUTER:
 536                         return 0;
 537                 default:
 538                         goto out_inval;
 539                 }
 540         } else {
 541                 switch (*type) {
 542                 case NO_ROUTER:
 543                 case PRIMARY_ROUTER:
 544                 case SECONDARY_ROUTER:
 545                         return 0;
 546                 case MULTICAST_ROUTER:
 547                         if (qeth_is_ipafunc_supported(card, prot,
 548                                                       IPA_OSA_MC_ROUTER))
 549                                 return 0;
 550                 default:
 551                         goto out_inval;
 552                 }
 553         }
 554 out_inval:
 555         *type = NO_ROUTER;
 556         return -EINVAL;
 557 }
 558
 559 int qeth_l3_setrouting_v4(struct qeth_card *card)
 560 {
 561         int rc;
 562
 563         QETH_CARD_TEXT(card, 3, "setrtg4");
 564
 565         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 566                                   QETH_PROT_IPV4);
 567         if (rc)
 568                 return rc;
 569
 570         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 571                                   QETH_PROT_IPV4);
 572         if (rc) {
 573                 card->options.route4.type = NO_ROUTER;
 574                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 575                         " on %s. Type set to 'no router'.\n", rc,
 576                         QETH_CARD_IFNAME(card));
 577         }
 578         return rc;
 579 }
 580
 581 int qeth_l3_setrouting_v6(struct qeth_card *card)
 582 {
 583         int rc = 0;
 584
 585         QETH_CARD_TEXT(card, 3, "setrtg6");
 586 #ifdef CONFIG_QETH_IPV6
 587
 588         if (!qeth_is_supported(card, IPA_IPV6))
 589                 return 0;
 590         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 591                                   QETH_PROT_IPV6);
 592         if (rc)
 593                 return rc;
 594
 595         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 596                                   QETH_PROT_IPV6);
 597         if (rc) {
 598                 card->options.route6.type = NO_ROUTER;
 599                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 600                         " on %s. Type set to 'no router'.\n", rc,
 601                         QETH_CARD_IFNAME(card));
 602         }
 603 #endif
 604         return rc;
 605 }
 606
 607 /*
 608  * IP address takeover related functions
 609  */
 610 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 611 {
 612         struct qeth_ipato_entry *ipatoe, *tmp;
 613
 614         spin_lock_bh(&card->ip_lock);
 615
 616         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 617                 list_del(&ipatoe->entry);
 618                 kfree(ipatoe);
 619         }
 620
 621         spin_unlock_bh(&card->ip_lock);
 622 }
 623
 624 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 625                                 struct qeth_ipato_entry *new)
 626 {
 627         struct qeth_ipato_entry *ipatoe;
 628         int rc = 0;
 629
 630         QETH_CARD_TEXT(card, 2, "addipato");
 631
 632         spin_lock_bh(&card->ip_lock);
 633
 634         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 635                 if (ipatoe->proto != new->proto)
 636                         continue;
 637                 if (!memcmp(ipatoe->addr, new->addr,
 638                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 639                     (ipatoe->mask_bits == new->mask_bits)) {
 640                         rc = -EEXIST;
 641                         break;
 642                 }
 643         }
 644
 645         if (!rc)
 646                 list_add_tail(&new->entry, &card->ipato.entries);
 647
 648         spin_unlock_bh(&card->ip_lock);
 649
 650         return rc;
 651 }
 652
 653 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 654                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 655 {
 656         struct qeth_ipato_entry *ipatoe, *tmp;
 657
 658         QETH_CARD_TEXT(card, 2, "delipato");
 659
 660         spin_lock_bh(&card->ip_lock);
 661
 662         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 663                 if (ipatoe->proto != proto)
 664                         continue;
 665                 if (!memcmp(ipatoe->addr, addr,
 666                             (proto == QETH_PROT_IPV4)? 4:16) &&
 667                     (ipatoe->mask_bits == mask_bits)) {
 668                         list_del(&ipatoe->entry);
 669                         kfree(ipatoe);
 670                 }
 671         }
 672
 673         spin_unlock_bh(&card->ip_lock);
 674 }
 675
 676 /*
 677  * VIPA related functions
 678  */
 679 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 680               const u8 *addr)
 681 {
 682         struct qeth_ipaddr *ipaddr;
 683         int rc = 0;
 684
 685         ipaddr = qeth_l3_get_addr_buffer(proto);
 686         if (ipaddr) {
 687                 if (proto == QETH_PROT_IPV4) {
 688                         QETH_CARD_TEXT(card, 2, "addvipa4");
 689                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 690                         ipaddr->u.a4.mask = 0;
 691                 } else if (proto == QETH_PROT_IPV6) {
 692                         QETH_CARD_TEXT(card, 2, "addvipa6");
 693                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 694                         ipaddr->u.a6.pfxlen = 0;
 695                 }
 696                 ipaddr->type = QETH_IP_TYPE_VIPA;
 697                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 698                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 699         } else
 700                 return -ENOMEM;
 701
 702         spin_lock_bh(&card->ip_lock);
 703
 704         if (qeth_l3_ip_from_hash(card, ipaddr))
 705                 rc = -EEXIST;
 706         else
 707                 qeth_l3_add_ip(card, ipaddr);
 708
 709         spin_unlock_bh(&card->ip_lock);
 710
 711         kfree(ipaddr);
 712
 713         return rc;
 714 }
 715
 716 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 717               const u8 *addr)
 718 {
 719         struct qeth_ipaddr *ipaddr;
 720
 721         ipaddr = qeth_l3_get_addr_buffer(proto);
 722         if (ipaddr) {
 723                 if (proto == QETH_PROT_IPV4) {
 724                         QETH_CARD_TEXT(card, 2, "delvipa4");
 725                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 726                         ipaddr->u.a4.mask = 0;
 727                 } else if (proto == QETH_PROT_IPV6) {
 728                         QETH_CARD_TEXT(card, 2, "delvipa6");
 729                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 730                         ipaddr->u.a6.pfxlen = 0;
 731                 }
 732                 ipaddr->type = QETH_IP_TYPE_VIPA;
 733         } else
 734                 return;
 735
 736         spin_lock_bh(&card->ip_lock);
 737         qeth_l3_delete_ip(card, ipaddr);
 738         spin_unlock_bh(&card->ip_lock);
 739
 740         kfree(ipaddr);
 741 }
 742
 743 /*
 744  * proxy ARP related functions
 745  */
 746 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 747               const u8 *addr)
 748 {
 749         struct qeth_ipaddr *ipaddr;
 750         int rc = 0;
 751
 752         ipaddr = qeth_l3_get_addr_buffer(proto);
 753         if (ipaddr) {
 754                 if (proto == QETH_PROT_IPV4) {
 755                         QETH_CARD_TEXT(card, 2, "addrxip4");
 756                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 757                         ipaddr->u.a4.mask = 0;
 758                 } else if (proto == QETH_PROT_IPV6) {
 759                         QETH_CARD_TEXT(card, 2, "addrxip6");
 760                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 761                         ipaddr->u.a6.pfxlen = 0;
 762                 }
 763
 764                 ipaddr->type = QETH_IP_TYPE_RXIP;
 765                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 766                 ipaddr->del_flags = 0;
 767         } else
 768                 return -ENOMEM;
 769
 770         spin_lock_bh(&card->ip_lock);
 771
 772         if (qeth_l3_ip_from_hash(card, ipaddr))
 773                 rc = -EEXIST;
 774         else
 775                 qeth_l3_add_ip(card, ipaddr);
 776
 777         spin_unlock_bh(&card->ip_lock);
 778
 779         kfree(ipaddr);
 780
 781         return rc;
 782 }
 783
 784 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 785                         const u8 *addr)
 786 {
 787         struct qeth_ipaddr *ipaddr;
 788
 789         ipaddr = qeth_l3_get_addr_buffer(proto);
 790         if (ipaddr) {
 791                 if (proto == QETH_PROT_IPV4) {
 792                         QETH_CARD_TEXT(card, 2, "addrxip4");
 793                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 794                         ipaddr->u.a4.mask = 0;
 795                 } else if (proto == QETH_PROT_IPV6) {
 796                         QETH_CARD_TEXT(card, 2, "addrxip6");
 797                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 798                         ipaddr->u.a6.pfxlen = 0;
 799                 }
 800                 ipaddr->type = QETH_IP_TYPE_RXIP;
 801         } else
 802                 return;
 803
 804         spin_lock_bh(&card->ip_lock);
 805         qeth_l3_delete_ip(card, ipaddr);
 806         spin_unlock_bh(&card->ip_lock);
 807
 808         kfree(ipaddr);
 809 }
 810
 811 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 812                                 struct qeth_ipaddr *addr)
 813 {
 814         char buf[50];
 815         int rc = 0;
 816         int cnt = 3;
 817
 818
 819         if (addr->proto == QETH_PROT_IPV4) {
 820                 QETH_CARD_TEXT(card, 2, "setaddr4");
 821                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 822         } else if (addr->proto == QETH_PROT_IPV6) {
 823                 QETH_CARD_TEXT(card, 2, "setaddr6");
 824                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 825                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 826         } else {
 827                 QETH_CARD_TEXT(card, 2, "setaddr?");
 828                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 829         }
 830         do {
 831                 if (addr->is_multicast)
 832                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 833                 else
 834                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 835                                         addr->set_flags);
 836                 if (rc)
 837                         QETH_CARD_TEXT(card, 2, "failed");
 838         } while ((--cnt > 0) && rc);
 839         if (rc) {
 840                 QETH_CARD_TEXT(card, 2, "FAILED");
 841                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 842                 dev_warn(&card->gdev->dev,
 843                         "Registering IP address %s failed\n", buf);
 844         }
 845         return rc;
 846 }
 847
 848 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 849                                                 struct qeth_ipaddr *addr)
 850 {
 851         int rc = 0;
 852
 853         if (addr->proto == QETH_PROT_IPV4) {
 854                 QETH_CARD_TEXT(card, 2, "deladdr4");
 855                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 856         } else if (addr->proto == QETH_PROT_IPV6) {
 857                 QETH_CARD_TEXT(card, 2, "deladdr6");
 858                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 859                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 860         } else {
 861                 QETH_CARD_TEXT(card, 2, "deladdr?");
 862                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 863         }
 864         if (addr->is_multicast)
 865                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 866         else
 867                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 868                                         addr->del_flags);
 869         if (rc)
 870                 QETH_CARD_TEXT(card, 2, "failed");
 871
 872         return rc;
 873 }
 874
 875 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 876 {
 877         if (cast_type == RTN_MULTICAST)
 878                 return QETH_CAST_MULTICAST;
 879         if (cast_type == RTN_BROADCAST)
 880                 return QETH_CAST_BROADCAST;
 881         return QETH_CAST_UNICAST;
 882 }
 883
 884 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 885 {
 886         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 887         if (cast_type == RTN_MULTICAST)
 888                 return ct | QETH_CAST_MULTICAST;
 889         if (cast_type == RTN_ANYCAST)
 890                 return ct | QETH_CAST_ANYCAST;
 891         if (cast_type == RTN_BROADCAST)
 892                 return ct | QETH_CAST_BROADCAST;
 893         return ct | QETH_CAST_UNICAST;
 894 }
 895
 896 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 897 {
 898         int rc;
 899
 900         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 901
 902         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 903                 dev_info(&card->gdev->dev,
 904                         "set adapter parameters not supported.\n");
 905                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 906                 return 0;
 907         }
 908         rc = qeth_query_setadapterparms(card);
 909         if (rc) {
 910                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
 911                         "0x%x\n", dev_name(&card->gdev->dev), rc);
 912                 return rc;
 913         }
 914         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 915                 rc = qeth_setadpparms_change_macaddr(card);
 916                 if (rc)
 917                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
 918                                 " address failed\n");
 919         }
 920
 921         return rc;
 922 }
 923
 924 #ifdef CONFIG_QETH_IPV6
 925 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
 926                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
 927 {
 928         int rc;
 929         struct qeth_cmd_buffer *iob;
 930
 931         QETH_CARD_TEXT(card, 4, "simassp6");
 932         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
 933                                        0, QETH_PROT_IPV6);
 934         if (!iob)
 935                 return -ENOMEM;
 936         rc = qeth_send_setassparms(card, iob, 0, 0,
 937                                    qeth_setassparms_cb, NULL);
 938         return rc;
 939 }
 940 #endif
 941
 942 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
 943 {
 944         int rc;
 945
 946         QETH_CARD_TEXT(card, 3, "ipaarp");
 947
 948         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 949                 dev_info(&card->gdev->dev,
 950                         "ARP processing not supported on %s!\n",
 951                         QETH_CARD_IFNAME(card));
 952                 return 0;
 953         }
 954         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
 955                                           IPA_CMD_ASS_START, 0);
 956         if (rc) {
 957                 dev_warn(&card->gdev->dev,
 958                         "Starting ARP processing support for %s failed\n",
 959                         QETH_CARD_IFNAME(card));
 960         }
 961         return rc;
 962 }
 963
 964 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
 965 {
 966         int rc;
 967
 968         QETH_CARD_TEXT(card, 3, "ipaipfrg");
 969
 970         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
 971                 dev_info(&card->gdev->dev,
 972                         "Hardware IP fragmentation not supported on %s\n",
 973                         QETH_CARD_IFNAME(card));
 974                 return  -EOPNOTSUPP;
 975         }
 976
 977         rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
 978                                           IPA_CMD_ASS_START, 0);
 979         if (rc) {
 980                 dev_warn(&card->gdev->dev,
 981                         "Starting IP fragmentation support for %s failed\n",
 982                         QETH_CARD_IFNAME(card));
 983         } else
 984                 dev_info(&card->gdev->dev,
 985                         "Hardware IP fragmentation enabled \n");
 986         return rc;
 987 }
 988
 989 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
 990 {
 991         int rc;
 992
 993         QETH_CARD_TEXT(card, 3, "stsrcmac");
 994
 995         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
 996                 dev_info(&card->gdev->dev,
 997                         "Inbound source MAC-address not supported on %s\n",
 998                         QETH_CARD_IFNAME(card));
 999                 return -EOPNOTSUPP;
1000         }
1001
1002         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
1003                                           IPA_CMD_ASS_START, 0);
1004         if (rc)
1005                 dev_warn(&card->gdev->dev,
1006                         "Starting source MAC-address support for %s failed\n",
1007                         QETH_CARD_IFNAME(card));
1008         return rc;
1009 }
1010
1011 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1012 {
1013         int rc = 0;
1014
1015         QETH_CARD_TEXT(card, 3, "strtvlan");
1016
1017         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1018                 dev_info(&card->gdev->dev,
1019                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1020                 return -EOPNOTSUPP;
1021         }
1022
1023         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
1024                                           IPA_CMD_ASS_START, 0);
1025         if (rc) {
1026                 dev_warn(&card->gdev->dev,
1027                         "Starting VLAN support for %s failed\n",
1028                         QETH_CARD_IFNAME(card));
1029         } else {
1030                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1031         }
1032         return rc;
1033 }
1034
1035 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1036 {
1037         int rc;
1038
1039         QETH_CARD_TEXT(card, 3, "stmcast");
1040
1041         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1042                 dev_info(&card->gdev->dev,
1043                         "Multicast not supported on %s\n",
1044                         QETH_CARD_IFNAME(card));
1045                 return -EOPNOTSUPP;
1046         }
1047
1048         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1049                                           IPA_CMD_ASS_START, 0);
1050         if (rc) {
1051                 dev_warn(&card->gdev->dev,
1052                         "Starting multicast support for %s failed\n",
1053                         QETH_CARD_IFNAME(card));
1054         } else {
1055                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1056                 card->dev->flags |= IFF_MULTICAST;
1057         }
1058         return rc;
1059 }
1060
1061 #ifdef CONFIG_QETH_IPV6
1062 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1063 {
1064         int rc;
1065
1066         QETH_CARD_TEXT(card, 3, "softipv6");
1067
1068         if (card->info.type == QETH_CARD_TYPE_IQD)
1069                 goto out;
1070
1071         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1072         if (rc) {
1073                 dev_err(&card->gdev->dev,
1074                         "Activating IPv6 support for %s failed\n",
1075                         QETH_CARD_IFNAME(card));
1076                 return rc;
1077         }
1078         rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1079                                           IPA_CMD_ASS_START, 3);
1080         if (rc) {
1081                 dev_err(&card->gdev->dev,
1082                         "Activating IPv6 support for %s failed\n",
1083                         QETH_CARD_IFNAME(card));
1084                 return rc;
1085         }
1086         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1087                                                IPA_CMD_ASS_START);
1088         if (rc) {
1089                 dev_err(&card->gdev->dev,
1090                         "Activating IPv6 support for %s failed\n",
1091                          QETH_CARD_IFNAME(card));
1092                 return rc;
1093         }
1094         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1095                                                IPA_CMD_ASS_START);
1096         if (rc) {
1097                 dev_warn(&card->gdev->dev,
1098                         "Enabling the passthrough mode for %s failed\n",
1099                         QETH_CARD_IFNAME(card));
1100                 return rc;
1101         }
1102 out:
1103         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1104         return 0;
1105 }
1106 #endif
1107
1108 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1109 {
1110         int rc = 0;
1111
1112         QETH_CARD_TEXT(card, 3, "strtipv6");
1113
1114         if (!qeth_is_supported(card, IPA_IPV6)) {
1115                 dev_info(&card->gdev->dev,
1116                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1117                 return 0;
1118         }
1119 #ifdef CONFIG_QETH_IPV6
1120         rc = qeth_l3_softsetup_ipv6(card);
1121 #endif
1122         return rc ;
1123 }
1124
1125 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1126 {
1127         int rc;
1128
1129         QETH_CARD_TEXT(card, 3, "stbrdcst");
1130         card->info.broadcast_capable = 0;
1131         if (!qeth_is_supported(card, IPA_FILTERING)) {
1132                 dev_info(&card->gdev->dev,
1133                         "Broadcast not supported on %s\n",
1134                         QETH_CARD_IFNAME(card));
1135                 rc = -EOPNOTSUPP;
1136                 goto out;
1137         }
1138         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1139                                           IPA_CMD_ASS_START, 0);
1140         if (rc) {
1141                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1142                         "%s failed\n", QETH_CARD_IFNAME(card));
1143                 goto out;
1144         }
1145
1146         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1147                                           IPA_CMD_ASS_CONFIGURE, 1);
1148         if (rc) {
1149                 dev_warn(&card->gdev->dev,
1150                         "Setting up broadcast filtering for %s failed\n",
1151                         QETH_CARD_IFNAME(card));
1152                 goto out;
1153         }
1154         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1155         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1156         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1157                                           IPA_CMD_ASS_ENABLE, 1);
1158         if (rc) {
1159                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1160                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1161                 goto out;
1162         }
1163         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1164 out:
1165         if (card->info.broadcast_capable)
1166                 card->dev->flags |= IFF_BROADCAST;
1167         else
1168                 card->dev->flags &= ~IFF_BROADCAST;
1169         return rc;
1170 }
1171
1172 static int qeth_l3_start_ipassists(struct qeth_card *card)
1173 {
1174         QETH_CARD_TEXT(card, 3, "strtipas");
1175
1176         if (qeth_set_access_ctrl_online(card, 0))
1177                 return -EIO;
1178         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1179         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1180         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1181         qeth_l3_start_ipa_vlan(card);           /* go on*/
1182         qeth_l3_start_ipa_multicast(card);              /* go on*/
1183         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1184         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1185         return 0;
1186 }
1187
1188 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1189                 struct qeth_reply *reply, unsigned long data)
1190 {
1191         struct qeth_ipa_cmd *cmd;
1192
1193         cmd = (struct qeth_ipa_cmd *) data;
1194         if (cmd->hdr.return_code == 0)
1195                 memcpy(card->dev->dev_addr,
1196                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1197         else
1198                 eth_random_addr(card->dev->dev_addr);
1199
1200         return 0;
1201 }
1202
1203 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1204 {
1205         int rc = 0;
1206         struct qeth_cmd_buffer *iob;
1207         struct qeth_ipa_cmd *cmd;
1208
1209         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1210
1211         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1212                                      QETH_PROT_IPV6);
1213         if (!iob)
1214                 return -ENOMEM;
1215         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1216         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1217                         card->info.unique_id;
1218
1219         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1220                                 NULL);
1221         return rc;
1222 }
1223
1224 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1225                 struct qeth_reply *reply, unsigned long data)
1226 {
1227         struct qeth_ipa_cmd *cmd;
1228
1229         cmd = (struct qeth_ipa_cmd *) data;
1230         if (cmd->hdr.return_code == 0)
1231                 card->info.unique_id = *((__u16 *)
1232                                 &cmd->data.create_destroy_addr.unique_id[6]);
1233         else {
1234                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1235                                         UNIQUE_ID_NOT_BY_CARD;
1236                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1237                         "generate a unique ID\n");
1238         }
1239         return 0;
1240 }
1241
1242 static int qeth_l3_get_unique_id(struct qeth_card *card)
1243 {
1244         int rc = 0;
1245         struct qeth_cmd_buffer *iob;
1246         struct qeth_ipa_cmd *cmd;
1247
1248         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1249
1250         if (!qeth_is_supported(card, IPA_IPV6)) {
1251                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1252                                         UNIQUE_ID_NOT_BY_CARD;
1253                 return 0;
1254         }
1255
1256         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1257                                      QETH_PROT_IPV6);
1258         if (!iob)
1259                 return -ENOMEM;
1260         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1261         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1262                         card->info.unique_id;
1263
1264         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1265         return rc;
1266 }
1267
1268 static int
1269 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1270                             unsigned long data)
1271 {
1272         struct qeth_ipa_cmd        *cmd;
1273         __u16 rc;
1274
1275         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1276
1277         cmd = (struct qeth_ipa_cmd *)data;
1278         rc = cmd->hdr.return_code;
1279         if (rc)
1280                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1281         switch (cmd->data.diagass.action) {
1282         case QETH_DIAGS_CMD_TRACE_QUERY:
1283                 break;
1284         case QETH_DIAGS_CMD_TRACE_DISABLE:
1285                 switch (rc) {
1286                 case 0:
1287                 case IPA_RC_INVALID_SUBCMD:
1288                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1289                         dev_info(&card->gdev->dev, "The HiperSockets network "
1290                                 "traffic analyzer is deactivated\n");
1291                         break;
1292                 default:
1293                         break;
1294                 }
1295                 break;
1296         case QETH_DIAGS_CMD_TRACE_ENABLE:
1297                 switch (rc) {
1298                 case 0:
1299                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1300                         dev_info(&card->gdev->dev, "The HiperSockets network "
1301                                 "traffic analyzer is activated\n");
1302                         break;
1303                 case IPA_RC_HARDWARE_AUTH_ERROR:
1304                         dev_warn(&card->gdev->dev, "The device is not "
1305                                 "authorized to run as a HiperSockets network "
1306                                 "traffic analyzer\n");
1307                         break;
1308                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1309                         dev_warn(&card->gdev->dev, "A HiperSockets "
1310                                 "network traffic analyzer is already "
1311                                 "active in the HiperSockets LAN\n");
1312                         break;
1313                 default:
1314                         break;
1315                 }
1316                 break;
1317         default:
1318                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1319                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1320         }
1321
1322         return 0;
1323 }
1324
1325 static int
1326 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1327 {
1328         struct qeth_cmd_buffer *iob;
1329         struct qeth_ipa_cmd    *cmd;
1330
1331         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1332
1333         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1334         if (!iob)
1335                 return -ENOMEM;
1336         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1337         cmd->data.diagass.subcmd_len = 16;
1338         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1339         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1340         cmd->data.diagass.action = diags_cmd;
1341         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1342 }
1343
1344 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac)
1345 {
1346         ip_eth_mc_map(ipm, mac);
1347 }
1348
1349 static void qeth_l3_mark_all_mc_to_be_deleted(struct qeth_card *card)
1350 {
1351         struct qeth_ipaddr *addr;
1352         int i;
1353
1354         hash_for_each(card->ip_mc_htable, i, addr, hnode)
1355                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1356
1357 }
1358
1359 static void qeth_l3_add_all_new_mc(struct qeth_card *card)
1360 {
1361         struct qeth_ipaddr *addr;
1362         struct hlist_node *tmp;
1363         int i;
1364         int rc;
1365
1366         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1367                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
1368                         rc = qeth_l3_register_addr_entry(card, addr);
1369                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
1370                                 addr->ref_counter = 1;
1371                         else {
1372                                 hash_del(&addr->hnode);
1373                                 kfree(addr);
1374                         }
1375                 }
1376         }
1377
1378 }
1379
1380 static void qeth_l3_delete_nonused_mc(struct qeth_card *card)
1381 {
1382         struct qeth_ipaddr *addr;
1383         struct hlist_node *tmp;
1384         int i;
1385         int rc;
1386
1387         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1388                 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
1389                         rc = qeth_l3_deregister_addr_entry(card, addr);
1390                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) {
1391                                 hash_del(&addr->hnode);
1392                                 kfree(addr);
1393                         }
1394                 }
1395         }
1396
1397 }
1398
1399
1400 static void
1401 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1402 {
1403         struct ip_mc_list *im4;
1404         struct qeth_ipaddr *tmp, *ipm;
1405         char buf[MAX_ADDR_LEN];
1406
1407         QETH_CARD_TEXT(card, 4, "addmc");
1408
1409         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1410                 if (!tmp)
1411                         return;
1412
1413         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1414              im4 = rcu_dereference(im4->next_rcu)) {
1415                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf);
1416
1417                 tmp->u.a4.addr = im4->multiaddr;
1418                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1419
1420                 ipm = qeth_l3_ip_from_hash(card, tmp);
1421                 if (ipm) {
1422                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1423                 } else {
1424                         ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1425                         if (!ipm)
1426                                 continue;
1427                         memcpy(ipm->mac, buf, sizeof(tmp->mac));
1428                         ipm->u.a4.addr = im4->multiaddr;
1429                         ipm->is_multicast = 1;
1430                         ipm->disp_flag = QETH_DISP_ADDR_ADD;
1431                         hash_add(card->ip_mc_htable,
1432                                         &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1433                 }
1434         }
1435
1436         kfree(tmp);
1437 }
1438
1439 /* called with rcu_read_lock */
1440 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1441 {
1442         struct in_device *in_dev;
1443         u16 vid;
1444
1445         QETH_CARD_TEXT(card, 4, "addmcvl");
1446
1447         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1448                 return;
1449
1450         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1451                 struct net_device *netdev;
1452
1453                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1454                                               vid);
1455                 if (netdev == NULL ||
1456                     !(netdev->flags & IFF_UP))
1457                         continue;
1458                 in_dev = __in_dev_get_rcu(netdev);
1459                 if (!in_dev)
1460                         continue;
1461                 qeth_l3_add_mc_to_hash(card, in_dev);
1462         }
1463 }
1464
1465 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1466 {
1467         struct in_device *in4_dev;
1468
1469         QETH_CARD_TEXT(card, 4, "chkmcv4");
1470
1471         rcu_read_lock();
1472         in4_dev = __in_dev_get_rcu(card->dev);
1473         if (in4_dev == NULL)
1474                 goto unlock;
1475         qeth_l3_add_mc_to_hash(card, in4_dev);
1476         qeth_l3_add_vlan_mc(card);
1477 unlock:
1478         rcu_read_unlock();
1479 }
1480
1481 #ifdef CONFIG_QETH_IPV6
1482 static void
1483 qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev)
1484 {
1485         struct qeth_ipaddr *ipm;
1486         struct ifmcaddr6 *im6;
1487         struct qeth_ipaddr *tmp;
1488         char buf[MAX_ADDR_LEN];
1489
1490         QETH_CARD_TEXT(card, 4, "addmc6");
1491
1492         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1493                 if (!tmp)
1494                         return;
1495
1496         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1497                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1498
1499                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1500                 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1501                        sizeof(struct in6_addr));
1502                 tmp->is_multicast = 1;
1503
1504                 ipm = qeth_l3_ip_from_hash(card, tmp);
1505                 if (ipm) {
1506                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1507                         continue;
1508                 }
1509
1510                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1511                 if (!ipm)
1512                         continue;
1513
1514                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1515                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1516                        sizeof(struct in6_addr));
1517                 ipm->is_multicast = 1;
1518                 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1519                 hash_add(card->ip_mc_htable,
1520                                 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1521
1522         }
1523         kfree(tmp);
1524 }
1525
1526 /* called with rcu_read_lock */
1527 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1528 {
1529         struct inet6_dev *in_dev;
1530         u16 vid;
1531
1532         QETH_CARD_TEXT(card, 4, "admc6vl");
1533
1534         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1535                 return;
1536
1537         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1538                 struct net_device *netdev;
1539
1540                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1541                                               vid);
1542                 if (netdev == NULL ||
1543                     !(netdev->flags & IFF_UP))
1544                         continue;
1545                 in_dev = in6_dev_get(netdev);
1546                 if (!in_dev)
1547                         continue;
1548                 read_lock_bh(&in_dev->lock);
1549                 qeth_l3_add_mc6_to_hash(card, in_dev);
1550                 read_unlock_bh(&in_dev->lock);
1551                 in6_dev_put(in_dev);
1552         }
1553 }
1554
1555 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1556 {
1557         struct inet6_dev *in6_dev;
1558
1559         QETH_CARD_TEXT(card, 4, "chkmcv6");
1560
1561         if (!qeth_is_supported(card, IPA_IPV6))
1562                 return ;
1563         in6_dev = in6_dev_get(card->dev);
1564         if (!in6_dev)
1565                 return;
1566
1567         rcu_read_lock();
1568         read_lock_bh(&in6_dev->lock);
1569         qeth_l3_add_mc6_to_hash(card, in6_dev);
1570         qeth_l3_add_vlan_mc6(card);
1571         read_unlock_bh(&in6_dev->lock);
1572         rcu_read_unlock();
1573         in6_dev_put(in6_dev);
1574 }
1575 #endif /* CONFIG_QETH_IPV6 */
1576
1577 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1578                         unsigned short vid)
1579 {
1580         struct in_device *in_dev;
1581         struct in_ifaddr *ifa;
1582         struct qeth_ipaddr *addr;
1583         struct net_device *netdev;
1584
1585         QETH_CARD_TEXT(card, 4, "frvaddr4");
1586
1587         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1588         if (!netdev)
1589                 return;
1590         in_dev = in_dev_get(netdev);
1591         if (!in_dev)
1592                 return;
1593
1594         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1595         if (!addr)
1596                 return;
1597
1598         spin_lock_bh(&card->ip_lock);
1599
1600         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1601                 addr->u.a4.addr = ifa->ifa_address;
1602                 addr->u.a4.mask = ifa->ifa_mask;
1603                 addr->type = QETH_IP_TYPE_NORMAL;
1604                 qeth_l3_delete_ip(card, addr);
1605         }
1606
1607         spin_unlock_bh(&card->ip_lock);
1608
1609         kfree(addr);
1610         in_dev_put(in_dev);
1611 }
1612
1613 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1614                         unsigned short vid)
1615 {
1616 #ifdef CONFIG_QETH_IPV6
1617         struct inet6_dev *in6_dev;
1618         struct inet6_ifaddr *ifa;
1619         struct qeth_ipaddr *addr;
1620         struct net_device *netdev;
1621
1622         QETH_CARD_TEXT(card, 4, "frvaddr6");
1623
1624         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1625         if (!netdev)
1626                 return;
1627
1628         in6_dev = in6_dev_get(netdev);
1629         if (!in6_dev)
1630                 return;
1631
1632         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1633         if (!addr)
1634                 return;
1635
1636         spin_lock_bh(&card->ip_lock);
1637
1638         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1639                 memcpy(&addr->u.a6.addr, &ifa->addr,
1640                        sizeof(struct in6_addr));
1641                 addr->u.a6.pfxlen = ifa->prefix_len;
1642                 addr->type = QETH_IP_TYPE_NORMAL;
1643                 qeth_l3_delete_ip(card, addr);
1644         }
1645
1646         spin_unlock_bh(&card->ip_lock);
1647
1648         kfree(addr);
1649         in6_dev_put(in6_dev);
1650 #endif /* CONFIG_QETH_IPV6 */
1651 }
1652
1653 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1654                         unsigned short vid)
1655 {
1656         rcu_read_lock();
1657         qeth_l3_free_vlan_addresses4(card, vid);
1658         qeth_l3_free_vlan_addresses6(card, vid);
1659         rcu_read_unlock();
1660 }
1661
1662 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1663                                    __be16 proto, u16 vid)
1664 {
1665         struct qeth_card *card = dev->ml_priv;
1666
1667         set_bit(vid, card->active_vlans);
1668         return 0;
1669 }
1670
1671 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1672                                     __be16 proto, u16 vid)
1673 {
1674         struct qeth_card *card = dev->ml_priv;
1675
1676         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1677
1678         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1679                 QETH_CARD_TEXT(card, 3, "kidREC");
1680                 return 0;
1681         }
1682         /* unregister IP addresses of vlan device */
1683         qeth_l3_free_vlan_addresses(card, vid);
1684         clear_bit(vid, card->active_vlans);
1685         qeth_l3_set_multicast_list(card->dev);
1686         return 0;
1687 }
1688
1689 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1690                         struct sk_buff *skb, struct qeth_hdr *hdr,
1691                         unsigned short *vlan_id)
1692 {
1693         __be16 prot;
1694         struct iphdr *ip_hdr;
1695         unsigned char tg_addr[MAX_ADDR_LEN];
1696         int is_vlan = 0;
1697
1698         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1699                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1700                               ETH_P_IP);
1701                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1702                 case QETH_CAST_MULTICAST:
1703                         switch (prot) {
1704 #ifdef CONFIG_QETH_IPV6
1705                         case __constant_htons(ETH_P_IPV6):
1706                                 ndisc_mc_map((struct in6_addr *)
1707                                      skb->data + 24,
1708                                      tg_addr, card->dev, 0);
1709                                 break;
1710 #endif
1711                         case __constant_htons(ETH_P_IP):
1712                                 ip_hdr = (struct iphdr *)skb->data;
1713                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1714                                 break;
1715                         default:
1716                                 memcpy(tg_addr, card->dev->broadcast,
1717                                         card->dev->addr_len);
1718                         }
1719                         card->stats.multicast++;
1720                         skb->pkt_type = PACKET_MULTICAST;
1721                         break;
1722                 case QETH_CAST_BROADCAST:
1723                         memcpy(tg_addr, card->dev->broadcast,
1724                                 card->dev->addr_len);
1725                         card->stats.multicast++;
1726                         skb->pkt_type = PACKET_BROADCAST;
1727                         break;
1728                 case QETH_CAST_UNICAST:
1729                 case QETH_CAST_ANYCAST:
1730                 case QETH_CAST_NOCAST:
1731                 default:
1732                         if (card->options.sniffer)
1733                                 skb->pkt_type = PACKET_OTHERHOST;
1734                         else
1735                                 skb->pkt_type = PACKET_HOST;
1736                         memcpy(tg_addr, card->dev->dev_addr,
1737                                 card->dev->addr_len);
1738                 }
1739                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1740                         card->dev->header_ops->create(skb, card->dev, prot,
1741                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1742                                 card->dev->addr_len);
1743                 else
1744                         card->dev->header_ops->create(skb, card->dev, prot,
1745                                 tg_addr, "FAKELL", card->dev->addr_len);
1746         }
1747
1748         skb->protocol = eth_type_trans(skb, card->dev);
1749
1750         if (hdr->hdr.l3.ext_flags &
1751             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1752                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1753                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1754                 is_vlan = 1;
1755         }
1756
1757         if (card->dev->features & NETIF_F_RXCSUM) {
1758                 if ((hdr->hdr.l3.ext_flags &
1759                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1760                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1761                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1762                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1763                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1764                 else
1765                         skb->ip_summed = CHECKSUM_NONE;
1766         } else
1767                 skb->ip_summed = CHECKSUM_NONE;
1768         return is_vlan;
1769 }
1770
1771 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1772                                 int budget, int *done)
1773 {
1774         int work_done = 0;
1775         struct sk_buff *skb;
1776         struct qeth_hdr *hdr;
1777         __u16 vlan_tag = 0;
1778         int is_vlan;
1779         unsigned int len;
1780         __u16 magic;
1781
1782         *done = 0;
1783         WARN_ON_ONCE(!budget);
1784         while (budget) {
1785                 skb = qeth_core_get_next_skb(card,
1786                         &card->qdio.in_q->bufs[card->rx.b_index],
1787                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1788                 if (!skb) {
1789                         *done = 1;
1790                         break;
1791                 }
1792                 skb->dev = card->dev;
1793                 switch (hdr->hdr.l3.id) {
1794                 case QETH_HEADER_TYPE_LAYER3:
1795                         magic = *(__u16 *)skb->data;
1796                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1797                             (magic == ETH_P_AF_IUCV)) {
1798                                 skb->protocol = ETH_P_AF_IUCV;
1799                                 skb->pkt_type = PACKET_HOST;
1800                                 skb->mac_header = NET_SKB_PAD;
1801                                 skb->dev = card->dev;
1802                                 len = skb->len;
1803                                 card->dev->header_ops->create(skb, card->dev, 0,
1804                                         card->dev->dev_addr, "FAKELL",
1805                                         card->dev->addr_len);
1806                                 netif_receive_skb(skb);
1807                         } else {
1808                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1809                                                       &vlan_tag);
1810                                 len = skb->len;
1811                                 if (is_vlan && !card->options.sniffer)
1812                                         __vlan_hwaccel_put_tag(skb,
1813                                                 htons(ETH_P_8021Q), vlan_tag);
1814                                 napi_gro_receive(&card->napi, skb);
1815                         }
1816                         break;
1817                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1818                         skb->pkt_type = PACKET_HOST;
1819                         skb->protocol = eth_type_trans(skb, skb->dev);
1820                         len = skb->len;
1821                         netif_receive_skb(skb);
1822                         break;
1823                 default:
1824                         dev_kfree_skb_any(skb);
1825                         QETH_CARD_TEXT(card, 3, "inbunkno");
1826                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1827                         continue;
1828                 }
1829                 work_done++;
1830                 budget--;
1831                 card->stats.rx_packets++;
1832                 card->stats.rx_bytes += len;
1833         }
1834         return work_done;
1835 }
1836
1837 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1838 {
1839         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1840         int work_done = 0;
1841         struct qeth_qdio_buffer *buffer;
1842         int done;
1843         int new_budget = budget;
1844
1845         if (card->options.performance_stats) {
1846                 card->perf_stats.inbound_cnt++;
1847                 card->perf_stats.inbound_start_time = qeth_get_micros();
1848         }
1849
1850         while (1) {
1851                 if (!card->rx.b_count) {
1852                         card->rx.qdio_err = 0;
1853                         card->rx.b_count = qdio_get_next_buffers(
1854                                 card->data.ccwdev, 0, &card->rx.b_index,
1855                                 &card->rx.qdio_err);
1856                         if (card->rx.b_count <= 0) {
1857                                 card->rx.b_count = 0;
1858                                 break;
1859                         }
1860                         card->rx.b_element =
1861                                 &card->qdio.in_q->bufs[card->rx.b_index]
1862                                 .buffer->element[0];
1863                         card->rx.e_offset = 0;
1864                 }
1865
1866                 while (card->rx.b_count) {
1867                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
1868                         if (!(card->rx.qdio_err &&
1869                             qeth_check_qdio_errors(card, buffer->buffer,
1870                             card->rx.qdio_err, "qinerr")))
1871                                 work_done += qeth_l3_process_inbound_buffer(
1872                                         card, new_budget, &done);
1873                         else
1874                                 done = 1;
1875
1876                         if (done) {
1877                                 if (card->options.performance_stats)
1878                                         card->perf_stats.bufs_rec++;
1879                                 qeth_put_buffer_pool_entry(card,
1880                                         buffer->pool_entry);
1881                                 qeth_queue_input_buffer(card, card->rx.b_index);
1882                                 card->rx.b_count--;
1883                                 if (card->rx.b_count) {
1884                                         card->rx.b_index =
1885                                                 (card->rx.b_index + 1) %
1886                                                 QDIO_MAX_BUFFERS_PER_Q;
1887                                         card->rx.b_element =
1888                                                 &card->qdio.in_q
1889                                                 ->bufs[card->rx.b_index]
1890                                                 .buffer->element[0];
1891                                         card->rx.e_offset = 0;
1892                                 }
1893                         }
1894
1895                         if (work_done >= budget)
1896                                 goto out;
1897                         else
1898                                 new_budget = budget - work_done;
1899                 }
1900         }
1901
1902         napi_complete(napi);
1903         if (qdio_start_irq(card->data.ccwdev, 0))
1904                 napi_schedule(&card->napi);
1905 out:
1906         if (card->options.performance_stats)
1907                 card->perf_stats.inbound_time += qeth_get_micros() -
1908                         card->perf_stats.inbound_start_time;
1909         return work_done;
1910 }
1911
1912 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1913                         struct qeth_card *card)
1914 {
1915         int rc = 0;
1916         u16 vid;
1917
1918         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1919                 struct net_device *netdev;
1920
1921                 rcu_read_lock();
1922                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1923                                               vid);
1924                 rcu_read_unlock();
1925                 if (netdev == dev) {
1926                         rc = QETH_VLAN_CARD;
1927                         break;
1928                 }
1929         }
1930
1931         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
1932                 return 0;
1933
1934         return rc;
1935 }
1936
1937 static int qeth_l3_verify_dev(struct net_device *dev)
1938 {
1939         struct qeth_card *card;
1940         int rc = 0;
1941         unsigned long flags;
1942
1943         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
1944         list_for_each_entry(card, &qeth_core_card_list.list, list) {
1945                 if (card->dev == dev) {
1946                         rc = QETH_REAL_CARD;
1947                         break;
1948                 }
1949                 rc = qeth_l3_verify_vlan_dev(dev, card);
1950                 if (rc)
1951                         break;
1952         }
1953         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
1954
1955         return rc;
1956 }
1957
1958 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
1959 {
1960         struct qeth_card *card = NULL;
1961         int rc;
1962
1963         rc = qeth_l3_verify_dev(dev);
1964         if (rc == QETH_REAL_CARD)
1965                 card = dev->ml_priv;
1966         else if (rc == QETH_VLAN_CARD)
1967                 card = vlan_dev_real_dev(dev)->ml_priv;
1968         if (card && card->options.layer2)
1969                 card = NULL;
1970         if (card)
1971                 QETH_CARD_TEXT_(card, 4, "%d", rc);
1972         return card ;
1973 }
1974
1975 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1976 {
1977         QETH_DBF_TEXT(SETUP, 2, "stopcard");
1978         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1979
1980         qeth_set_allowed_threads(card, 0, 1);
1981         if (card->options.sniffer &&
1982             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1983                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1984         if (card->read.state == CH_STATE_UP &&
1985             card->write.state == CH_STATE_UP &&
1986             (card->state == CARD_STATE_UP)) {
1987                 if (recovery_mode)
1988                         qeth_l3_stop(card->dev);
1989                 else {
1990                         rtnl_lock();
1991                         dev_close(card->dev);
1992                         rtnl_unlock();
1993                 }
1994                 card->state = CARD_STATE_SOFTSETUP;
1995         }
1996         if (card->state == CARD_STATE_SOFTSETUP) {
1997                 qeth_l3_clear_ip_htable(card, 1);
1998                 qeth_clear_ipacmd_list(card);
1999                 card->state = CARD_STATE_HARDSETUP;
2000         }
2001         if (card->state == CARD_STATE_HARDSETUP) {
2002                 qeth_qdio_clear_card(card, 0);
2003                 qeth_clear_qdio_buffers(card);
2004                 qeth_clear_working_pool_list(card);
2005                 card->state = CARD_STATE_DOWN;
2006         }
2007         if (card->state == CARD_STATE_DOWN) {
2008                 qeth_clear_cmd_buffers(&card->read);
2009                 qeth_clear_cmd_buffers(&card->write);
2010         }
2011 }
2012
2013 /*
2014  * test for and Switch promiscuous mode (on or off)
2015  *  either for guestlan or HiperSocket Sniffer
2016  */
2017 static void
2018 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2019 {
2020         struct net_device *dev = card->dev;
2021
2022         if (((dev->flags & IFF_PROMISC) &&
2023              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2024             (!(dev->flags & IFF_PROMISC) &&
2025              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2026                 return;
2027
2028         if (card->info.guestlan) {              /* Guestlan trace */
2029                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2030                         qeth_setadp_promisc_mode(card);
2031         } else if (card->options.sniffer &&     /* HiperSockets trace */
2032                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2033                 if (dev->flags & IFF_PROMISC) {
2034                         QETH_CARD_TEXT(card, 3, "+promisc");
2035                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2036                 } else {
2037                         QETH_CARD_TEXT(card, 3, "-promisc");
2038                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2039                 }
2040         }
2041 }
2042
2043 static void qeth_l3_set_multicast_list(struct net_device *dev)
2044 {
2045         struct qeth_card *card = dev->ml_priv;
2046
2047         QETH_CARD_TEXT(card, 3, "setmulti");
2048         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2049             (card->state != CARD_STATE_UP))
2050                 return;
2051         if (!card->options.sniffer) {
2052
2053                 spin_lock_bh(&card->mclock);
2054
2055                 qeth_l3_mark_all_mc_to_be_deleted(card);
2056
2057                 qeth_l3_add_multicast_ipv4(card);
2058 #ifdef CONFIG_QETH_IPV6
2059                 qeth_l3_add_multicast_ipv6(card);
2060 #endif
2061                 qeth_l3_delete_nonused_mc(card);
2062                 qeth_l3_add_all_new_mc(card);
2063
2064                 spin_unlock_bh(&card->mclock);
2065
2066                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2067                         return;
2068         }
2069         qeth_l3_handle_promisc_mode(card);
2070 }
2071
2072 static const char *qeth_l3_arp_get_error_cause(int *rc)
2073 {
2074         switch (*rc) {
2075         case QETH_IPA_ARP_RC_FAILED:
2076                 *rc = -EIO;
2077                 return "operation failed";
2078         case QETH_IPA_ARP_RC_NOTSUPP:
2079                 *rc = -EOPNOTSUPP;
2080                 return "operation not supported";
2081         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2082                 *rc = -EINVAL;
2083                 return "argument out of range";
2084         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2085                 *rc = -EOPNOTSUPP;
2086                 return "query operation not supported";
2087         case QETH_IPA_ARP_RC_Q_NO_DATA:
2088                 *rc = -ENOENT;
2089                 return "no query data available";
2090         default:
2091                 return "unknown error";
2092         }
2093 }
2094
2095 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2096 {
2097         int tmp;
2098         int rc;
2099
2100         QETH_CARD_TEXT(card, 3, "arpstnoe");
2101
2102         /*
2103          * currently GuestLAN only supports the ARP assist function
2104          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2105          * thus we say EOPNOTSUPP for this ARP function
2106          */
2107         if (card->info.guestlan)
2108                 return -EOPNOTSUPP;
2109         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2110                 return -EOPNOTSUPP;
2111         }
2112         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2113                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2114                                           no_entries);
2115         if (rc) {
2116                 tmp = rc;
2117                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2118                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2119                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2120         }
2121         return rc;
2122 }
2123
2124 static __u32 get_arp_entry_size(struct qeth_card *card,
2125                         struct qeth_arp_query_data *qdata,
2126                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2127 {
2128         __u32 rc;
2129         __u8 is_hsi;
2130
2131         is_hsi = qdata->reply_bits == 5;
2132         if (type->ip == QETHARP_IP_ADDR_V4) {
2133                 QETH_CARD_TEXT(card, 4, "arpev4");
2134                 if (strip_entries) {
2135                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2136                                 sizeof(struct qeth_arp_qi_entry7_short);
2137                 } else {
2138                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2139                                 sizeof(struct qeth_arp_qi_entry7);
2140                 }
2141         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2142                 QETH_CARD_TEXT(card, 4, "arpev6");
2143                 if (strip_entries) {
2144                         rc = is_hsi ?
2145                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2146                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2147                 } else {
2148                         rc = is_hsi ?
2149                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2150                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2151                 }
2152         } else {
2153                 QETH_CARD_TEXT(card, 4, "arpinv");
2154                 rc = 0;
2155         }
2156
2157         return rc;
2158 }
2159
2160 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2161 {
2162         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2163                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2164 }
2165
2166 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2167                 struct qeth_reply *reply, unsigned long data)
2168 {
2169         struct qeth_ipa_cmd *cmd;
2170         struct qeth_arp_query_data *qdata;
2171         struct qeth_arp_query_info *qinfo;
2172         int i;
2173         int e;
2174         int entrybytes_done;
2175         int stripped_bytes;
2176         __u8 do_strip_entries;
2177
2178         QETH_CARD_TEXT(card, 3, "arpquecb");
2179
2180         qinfo = (struct qeth_arp_query_info *) reply->param;
2181         cmd = (struct qeth_ipa_cmd *) data;
2182         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2183         if (cmd->hdr.return_code) {
2184                 QETH_CARD_TEXT(card, 4, "arpcberr");
2185                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2186                 return 0;
2187         }
2188         if (cmd->data.setassparms.hdr.return_code) {
2189                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2190                 QETH_CARD_TEXT(card, 4, "setaperr");
2191                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2192                 return 0;
2193         }
2194         qdata = &cmd->data.setassparms.data.query_arp;
2195         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2196
2197         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2198         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2199         entrybytes_done = 0;
2200         for (e = 0; e < qdata->no_entries; ++e) {
2201                 char *cur_entry;
2202                 __u32 esize;
2203                 struct qeth_arp_entrytype *etype;
2204
2205                 cur_entry = &qdata->data + entrybytes_done;
2206                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2207                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2208                         QETH_CARD_TEXT(card, 4, "pmis");
2209                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2210                         break;
2211                 }
2212                 esize = get_arp_entry_size(card, qdata, etype,
2213                         do_strip_entries);
2214                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2215                 if (!esize)
2216                         break;
2217
2218                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2219                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2220                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2221                         goto out_error;
2222                 }
2223
2224                 memcpy(qinfo->udata + qinfo->udata_offset,
2225                         &qdata->data + entrybytes_done + stripped_bytes,
2226                         esize);
2227                 entrybytes_done += esize + stripped_bytes;
2228                 qinfo->udata_offset += esize;
2229                 ++qinfo->no_entries;
2230         }
2231         /* check if all replies received ... */
2232         if (cmd->data.setassparms.hdr.seq_no <
2233             cmd->data.setassparms.hdr.number_of_replies)
2234                 return 1;
2235         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2236         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2237         /* keep STRIP_ENTRIES flag so the user program can distinguish
2238          * stripped entries from normal ones */
2239         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2240                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2241         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2242         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2243         return 0;
2244 out_error:
2245         i = 0;
2246         memcpy(qinfo->udata, &i, 4);
2247         return 0;
2248 }
2249
2250 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2251                 struct qeth_cmd_buffer *iob, int len,
2252                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2253                         unsigned long),
2254                 void *reply_param)
2255 {
2256         QETH_CARD_TEXT(card, 4, "sendarp");
2257
2258         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2259         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2260                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2261         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2262                                       reply_cb, reply_param);
2263 }
2264
2265 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2266         enum qeth_prot_versions prot,
2267         struct qeth_arp_query_info *qinfo)
2268 {
2269         struct qeth_cmd_buffer *iob;
2270         struct qeth_ipa_cmd *cmd;
2271         int tmp;
2272         int rc;
2273
2274         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2275
2276         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2277                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2278                                        sizeof(struct qeth_arp_query_data)
2279                                                 - sizeof(char),
2280                                        prot);
2281         if (!iob)
2282                 return -ENOMEM;
2283         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2284         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2285         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2286         cmd->data.setassparms.data.query_arp.no_entries = 0;
2287         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2288                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2289                            qeth_l3_arp_query_cb, (void *)qinfo);
2290         if (rc) {
2291                 tmp = rc;
2292                 QETH_DBF_MESSAGE(2,
2293                         "Error while querying ARP cache on %s: %s "
2294                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2295                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2296         }
2297
2298         return rc;
2299 }
2300
2301 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2302 {
2303         struct qeth_arp_query_info qinfo = {0, };
2304         int rc;
2305
2306         QETH_CARD_TEXT(card, 3, "arpquery");
2307
2308         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2309                                IPA_ARP_PROCESSING)) {
2310                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2311                 rc = -EOPNOTSUPP;
2312                 goto out;
2313         }
2314         /* get size of userspace buffer and mask_bits -> 6 bytes */
2315         if (copy_from_user(&qinfo, udata, 6)) {
2316                 rc = -EFAULT;
2317                 goto out;
2318         }
2319         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2320         if (!qinfo.udata) {
2321                 rc = -ENOMEM;
2322                 goto out;
2323         }
2324         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2325         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2326         if (rc) {
2327                 if (copy_to_user(udata, qinfo.udata, 4))
2328                         rc = -EFAULT;
2329                 goto free_and_out;
2330         }
2331 #ifdef CONFIG_QETH_IPV6
2332         if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2333                 /* fails in case of GuestLAN QDIO mode */
2334                 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
2335         }
2336 #endif
2337         if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2338                 QETH_CARD_TEXT(card, 4, "qactf");
2339                 rc = -EFAULT;
2340                 goto free_and_out;
2341         }
2342         QETH_CARD_TEXT(card, 4, "qacts");
2343
2344 free_and_out:
2345         kfree(qinfo.udata);
2346 out:
2347         return rc;
2348 }
2349
2350 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2351                                 struct qeth_arp_cache_entry *entry)
2352 {
2353         struct qeth_cmd_buffer *iob;
2354         char buf[16];
2355         int tmp;
2356         int rc;
2357
2358         QETH_CARD_TEXT(card, 3, "arpadent");
2359
2360         /*
2361          * currently GuestLAN only supports the ARP assist function
2362          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2363          * thus we say EOPNOTSUPP for this ARP function
2364          */
2365         if (card->info.guestlan)
2366                 return -EOPNOTSUPP;
2367         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2368                 return -EOPNOTSUPP;
2369         }
2370
2371         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2372                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2373                                        sizeof(struct qeth_arp_cache_entry),
2374                                        QETH_PROT_IPV4);
2375         if (!iob)
2376                 return -ENOMEM;
2377         rc = qeth_send_setassparms(card, iob,
2378                                    sizeof(struct qeth_arp_cache_entry),
2379                                    (unsigned long) entry,
2380                                    qeth_setassparms_cb, NULL);
2381         if (rc) {
2382                 tmp = rc;
2383                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2384                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2385                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2386                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2387         }
2388         return rc;
2389 }
2390
2391 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2392                                 struct qeth_arp_cache_entry *entry)
2393 {
2394         struct qeth_cmd_buffer *iob;
2395         char buf[16] = {0, };
2396         int tmp;
2397         int rc;
2398
2399         QETH_CARD_TEXT(card, 3, "arprment");
2400
2401         /*
2402          * currently GuestLAN only supports the ARP assist function
2403          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2404          * thus we say EOPNOTSUPP for this ARP function
2405          */
2406         if (card->info.guestlan)
2407                 return -EOPNOTSUPP;
2408         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2409                 return -EOPNOTSUPP;
2410         }
2411         memcpy(buf, entry, 12);
2412         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2413                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2414                                        12,
2415                                        QETH_PROT_IPV4);
2416         if (!iob)
2417                 return -ENOMEM;
2418         rc = qeth_send_setassparms(card, iob,
2419                                    12, (unsigned long)buf,
2420                                    qeth_setassparms_cb, NULL);
2421         if (rc) {
2422                 tmp = rc;
2423                 memset(buf, 0, 16);
2424                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2425                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2426                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2427                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2428         }
2429         return rc;
2430 }
2431
2432 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2433 {
2434         int rc;
2435         int tmp;
2436
2437         QETH_CARD_TEXT(card, 3, "arpflush");
2438
2439         /*
2440          * currently GuestLAN only supports the ARP assist function
2441          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2442          * thus we say EOPNOTSUPP for this ARP function
2443         */
2444         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2445                 return -EOPNOTSUPP;
2446         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2447                 return -EOPNOTSUPP;
2448         }
2449         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2450                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2451         if (rc) {
2452                 tmp = rc;
2453                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2454                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2455                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2456         }
2457         return rc;
2458 }
2459
2460 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2461 {
2462         struct qeth_card *card = dev->ml_priv;
2463         struct qeth_arp_cache_entry arp_entry;
2464         struct mii_ioctl_data *mii_data;
2465         int rc = 0;
2466
2467         if (!card)
2468                 return -ENODEV;
2469
2470         if (!qeth_card_hw_is_reachable(card))
2471                 return -ENODEV;
2472
2473         switch (cmd) {
2474         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2475                 if (!capable(CAP_NET_ADMIN)) {
2476                         rc = -EPERM;
2477                         break;
2478                 }
2479                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2480                 break;
2481         case SIOC_QETH_ARP_QUERY_INFO:
2482                 if (!capable(CAP_NET_ADMIN)) {
2483                         rc = -EPERM;
2484                         break;
2485                 }
2486                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2487                 break;
2488         case SIOC_QETH_ARP_ADD_ENTRY:
2489                 if (!capable(CAP_NET_ADMIN)) {
2490                         rc = -EPERM;
2491                         break;
2492                 }
2493                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2494                                    sizeof(struct qeth_arp_cache_entry)))
2495                         rc = -EFAULT;
2496                 else
2497                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2498                 break;
2499         case SIOC_QETH_ARP_REMOVE_ENTRY:
2500                 if (!capable(CAP_NET_ADMIN)) {
2501                         rc = -EPERM;
2502                         break;
2503                 }
2504                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2505                                    sizeof(struct qeth_arp_cache_entry)))
2506                         rc = -EFAULT;
2507                 else
2508                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2509                 break;
2510         case SIOC_QETH_ARP_FLUSH_CACHE:
2511                 if (!capable(CAP_NET_ADMIN)) {
2512                         rc = -EPERM;
2513                         break;
2514                 }
2515                 rc = qeth_l3_arp_flush_cache(card);
2516                 break;
2517         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2518                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2519                 break;
2520         case SIOC_QETH_GET_CARD_TYPE:
2521                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2522                      card->info.type == QETH_CARD_TYPE_OSX) &&
2523                     !card->info.guestlan)
2524                         return 1;
2525                 return 0;
2526                 break;
2527         case SIOCGMIIPHY:
2528                 mii_data = if_mii(rq);
2529                 mii_data->phy_id = 0;
2530                 break;
2531         case SIOCGMIIREG:
2532                 mii_data = if_mii(rq);
2533                 if (mii_data->phy_id != 0)
2534                         rc = -EINVAL;
2535                 else
2536                         mii_data->val_out = qeth_mdio_read(dev,
2537                                                         mii_data->phy_id,
2538                                                         mii_data->reg_num);
2539                 break;
2540         case SIOC_QETH_QUERY_OAT:
2541                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2542                 break;
2543         default:
2544                 rc = -EOPNOTSUPP;
2545         }
2546         if (rc)
2547                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2548         return rc;
2549 }
2550
2551 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2552 {
2553         int cast_type = RTN_UNSPEC;
2554         struct neighbour *n = NULL;
2555         struct dst_entry *dst;
2556
2557         rcu_read_lock();
2558         dst = skb_dst(skb);
2559         if (dst)
2560                 n = dst_neigh_lookup_skb(dst, skb);
2561         if (n) {
2562                 cast_type = n->type;
2563                 rcu_read_unlock();
2564                 neigh_release(n);
2565                 if ((cast_type == RTN_BROADCAST) ||
2566                     (cast_type == RTN_MULTICAST) ||
2567                     (cast_type == RTN_ANYCAST))
2568                         return cast_type;
2569                 else
2570                         return RTN_UNSPEC;
2571         }
2572         rcu_read_unlock();
2573
2574         /* try something else */
2575         if (skb->protocol == ETH_P_IPV6)
2576                 return (skb_network_header(skb)[24] == 0xff) ?
2577                                 RTN_MULTICAST : 0;
2578         else if (skb->protocol == ETH_P_IP)
2579                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2580                                 RTN_MULTICAST : 0;
2581         /* ... */
2582         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2583                 return RTN_BROADCAST;
2584         else {
2585                 u16 hdr_mac;
2586
2587                 hdr_mac = *((u16 *)skb->data);
2588                 /* tr multicast? */
2589                 switch (card->info.link_type) {
2590                 case QETH_LINK_TYPE_HSTR:
2591                 case QETH_LINK_TYPE_LANE_TR:
2592                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2593                             (hdr_mac == QETH_TR_MAC_C))
2594                                 return RTN_MULTICAST;
2595                         break;
2596                 /* eth or so multicast? */
2597                 default:
2598                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2599                             (hdr_mac == QETH_ETH_MAC_V6))
2600                                 return RTN_MULTICAST;
2601                 }
2602         }
2603         return cast_type;
2604 }
2605
2606 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2607                 struct qeth_hdr *hdr, struct sk_buff *skb)
2608 {
2609         char daddr[16];
2610         struct af_iucv_trans_hdr *iucv_hdr;
2611
2612         skb_pull(skb, 14);
2613         card->dev->header_ops->create(skb, card->dev, 0,
2614                                       card->dev->dev_addr, card->dev->dev_addr,
2615                                       card->dev->addr_len);
2616         skb_pull(skb, 14);
2617         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2618         memset(hdr, 0, sizeof(struct qeth_hdr));
2619         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2620         hdr->hdr.l3.ext_flags = 0;
2621         hdr->hdr.l3.length = skb->len;
2622         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2623         memset(daddr, 0, sizeof(daddr));
2624         daddr[0] = 0xfe;
2625         daddr[1] = 0x80;
2626         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2627         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2628 }
2629
2630 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2631                 struct sk_buff *skb, int ipv, int cast_type)
2632 {
2633         struct dst_entry *dst;
2634
2635         memset(hdr, 0, sizeof(struct qeth_hdr));
2636         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2637         hdr->hdr.l3.ext_flags = 0;
2638
2639         /*
2640          * before we're going to overwrite this location with next hop ip.
2641          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2642          */
2643         if (skb_vlan_tag_present(skb)) {
2644                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2645                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2646                 else
2647                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2648                 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2649         }
2650
2651         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2652
2653         rcu_read_lock();
2654         dst = skb_dst(skb);
2655         if (ipv == 4) {
2656                 struct rtable *rt = (struct rtable *) dst;
2657                 __be32 *pkey = &ip_hdr(skb)->daddr;
2658
2659                 if (rt->rt_gateway)
2660                         pkey = &rt->rt_gateway;
2661
2662                 /* IPv4 */
2663                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2664                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2665                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2666         } else if (ipv == 6) {
2667                 struct rt6_info *rt = (struct rt6_info *) dst;
2668                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2669
2670                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2671                         pkey = &rt->rt6i_gateway;
2672
2673                 /* IPv6 */
2674                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2675                 if (card->info.type == QETH_CARD_TYPE_IQD)
2676                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2677                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2678         } else {
2679                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2680                             skb->dev->broadcast, 6)) {
2681                         /* broadcast? */
2682                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2683                                                 QETH_HDR_PASSTHRU;
2684                 } else {
2685                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2686                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2687                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2688                 }
2689         }
2690         rcu_read_unlock();
2691 }
2692
2693 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2694                 struct qeth_hdr *hdr, struct sk_buff *skb)
2695 {
2696         struct iphdr *iph = ip_hdr(skb);
2697
2698         /* tcph->check contains already the pseudo hdr checksum
2699          * so just set the header flags
2700          */
2701         if (iph->protocol == IPPROTO_UDP)
2702                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2703         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2704                 QETH_HDR_EXT_CSUM_HDR_REQ;
2705         iph->check = 0;
2706         if (card->options.performance_stats)
2707                 card->perf_stats.tx_csum++;
2708 }
2709
2710 static void qeth_tso_fill_header(struct qeth_card *card,
2711                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2712 {
2713         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2714         struct tcphdr *tcph = tcp_hdr(skb);
2715         struct iphdr *iph = ip_hdr(skb);
2716         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2717
2718         /*fix header to TSO values ...*/
2719         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2720         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2721         /*set values which are fix for the first approach ...*/
2722         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2723         hdr->ext.imb_hdr_no  = 1;
2724         hdr->ext.hdr_type    = 1;
2725         hdr->ext.hdr_version = 1;
2726         hdr->ext.hdr_len     = 28;
2727         /*insert non-fix values */
2728         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2729         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2730         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2731                                        sizeof(struct qeth_hdr_tso));
2732         tcph->check = 0;
2733         if (skb->protocol == ETH_P_IPV6) {
2734                 ip6h->payload_len = 0;
2735                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2736                                                0, IPPROTO_TCP, 0);
2737         } else {
2738                 /*OSA want us to set these values ...*/
2739                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2740                                          0, IPPROTO_TCP, 0);
2741                 iph->tot_len = 0;
2742                 iph->check = 0;
2743         }
2744 }
2745
2746 /**
2747  * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2748  * @card:                          qeth card structure, to check max. elems.
2749  * @skb:                           SKB address
2750  * @extra_elems:                   extra elems needed, to check against max.
2751  *
2752  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2753  * skb data, including linear part and fragments, but excluding TCP header.
2754  * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2755  * Checks if the result plus extra_elems fits under the limit for the card.
2756  * Returns 0 if it does not.
2757  * Note: extra_elems is not included in the returned result.
2758  */
2759 static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2760                         struct sk_buff *skb, int extra_elems)
2761 {
2762         addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2763         int elements = qeth_get_elements_for_range(
2764                                 tcpdptr,
2765                                 (addr_t)skb->data + skb_headlen(skb)) +
2766                                 qeth_get_elements_for_frags(skb);
2767
2768         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2769                 QETH_DBF_MESSAGE(2,
2770         "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2771                                 elements + extra_elems, skb->len);
2772                 return 0;
2773         }
2774         return elements;
2775 }
2776
2777 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2778 {
2779         int rc;
2780         u16 *tag;
2781         struct qeth_hdr *hdr = NULL;
2782         int hdr_elements = 0;
2783         int elements;
2784         struct qeth_card *card = dev->ml_priv;
2785         struct sk_buff *new_skb = NULL;
2786         int ipv = qeth_get_ip_version(skb);
2787         int cast_type = qeth_l3_get_cast_type(card, skb);
2788         struct qeth_qdio_out_q *queue =
2789                 card->qdio.out_qs[card->qdio.do_prio_queueing
2790                         || (cast_type && card->info.is_multicast_different) ?
2791                         qeth_get_priority_queue(card, skb, ipv, cast_type) :
2792                         card->qdio.default_out_queue];
2793         int tx_bytes = skb->len;
2794         bool use_tso;
2795         int data_offset = -1;
2796         int nr_frags;
2797
2798         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2799              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2800               ((card->options.cq == QETH_CQ_ENABLED) &&
2801                (skb->protocol != ETH_P_AF_IUCV)))) ||
2802             card->options.sniffer)
2803                         goto tx_drop;
2804
2805         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2806                 card->stats.tx_carrier_errors++;
2807                 goto tx_drop;
2808         }
2809
2810         if ((cast_type == RTN_BROADCAST) &&
2811             (card->info.broadcast_capable == 0))
2812                 goto tx_drop;
2813
2814         if (card->options.performance_stats) {
2815                 card->perf_stats.outbound_cnt++;
2816                 card->perf_stats.outbound_start_time = qeth_get_micros();
2817         }
2818
2819         /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2820         use_tso = skb_is_gso(skb) &&
2821                   (qeth_get_ip_protocol(skb) == IPPROTO_TCP) && (ipv == 4);
2822
2823         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2824             !skb_is_nonlinear(skb)) {
2825                 new_skb = skb;
2826                 if (new_skb->protocol == ETH_P_AF_IUCV)
2827                         data_offset = 0;
2828                 else
2829                         data_offset = ETH_HLEN;
2830                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2831                 if (!hdr)
2832                         goto tx_drop;
2833                 hdr_elements++;
2834         } else {
2835                 /* create a clone with writeable headroom */
2836                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2837                                         + VLAN_HLEN);
2838                 if (!new_skb)
2839                         goto tx_drop;
2840         }
2841
2842         if (card->info.type == QETH_CARD_TYPE_IQD) {
2843                 if (data_offset < 0)
2844                         skb_pull(new_skb, ETH_HLEN);
2845         } else {
2846                 if (ipv == 4) {
2847                         skb_pull(new_skb, ETH_HLEN);
2848                 }
2849
2850                 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2851                         skb_push(new_skb, VLAN_HLEN);
2852                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2853                         skb_copy_to_linear_data_offset(new_skb, 4,
2854                                 new_skb->data + 8, 4);
2855                         skb_copy_to_linear_data_offset(new_skb, 8,
2856                                 new_skb->data + 12, 4);
2857                         tag = (u16 *)(new_skb->data + 12);
2858                         *tag = __constant_htons(ETH_P_8021Q);
2859                         *(tag + 1) = htons(skb_vlan_tag_get(new_skb));
2860                 }
2861         }
2862
2863         netif_stop_queue(dev);
2864
2865         /* fix hardware limitation: as long as we do not have sbal
2866          * chaining we can not send long frag lists
2867          */
2868         if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2869             ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2870              (!use_tso && !qeth_get_elements_no(card, new_skb, 0)))) {
2871                 int lin_rc = skb_linearize(new_skb);
2872
2873                 if (card->options.performance_stats) {
2874                         if (lin_rc)
2875                                 card->perf_stats.tx_linfail++;
2876                         else
2877                                 card->perf_stats.tx_lin++;
2878                 }
2879                 if (lin_rc)
2880                         goto tx_drop;
2881         }
2882
2883         if (use_tso) {
2884                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2885                                                 sizeof(struct qeth_hdr_tso));
2886                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2887                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2888                 qeth_tso_fill_header(card, hdr, new_skb);
2889                 hdr_elements++;
2890         } else {
2891                 if (data_offset < 0) {
2892                         hdr = (struct qeth_hdr *)skb_push(new_skb,
2893                                                 sizeof(struct qeth_hdr));
2894                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2895                                                 cast_type);
2896                 } else {
2897                         if (new_skb->protocol == ETH_P_AF_IUCV)
2898                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2899                         else {
2900                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2901                                                         cast_type);
2902                                 hdr->hdr.l3.length = new_skb->len - data_offset;
2903                         }
2904                 }
2905
2906                 if (skb->ip_summed == CHECKSUM_PARTIAL)
2907                         qeth_l3_hdr_csum(card, hdr, new_skb);
2908         }
2909
2910         elements = use_tso ?
2911                    qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2912                    qeth_get_elements_no(card, new_skb, hdr_elements);
2913         if (!elements) {
2914                 if (data_offset >= 0)
2915                         kmem_cache_free(qeth_core_header_cache, hdr);
2916                 goto tx_drop;
2917         }
2918         elements += hdr_elements;
2919
2920         if (card->info.type != QETH_CARD_TYPE_IQD) {
2921                 int len;
2922                 if (use_tso)
2923                         len = ((unsigned long)tcp_hdr(new_skb) +
2924                                 tcp_hdrlen(new_skb)) -
2925                                 (unsigned long)new_skb->data;
2926                 else
2927                         len = sizeof(struct qeth_hdr_layer3);
2928
2929                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2930                         goto tx_drop;
2931                 rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements);
2932         } else
2933                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2934                                         elements, data_offset, 0);
2935
2936         if (!rc) {
2937                 card->stats.tx_packets++;
2938                 card->stats.tx_bytes += tx_bytes;
2939                 if (new_skb != skb)
2940                         dev_kfree_skb_any(skb);
2941                 if (card->options.performance_stats) {
2942                         nr_frags = skb_shinfo(new_skb)->nr_frags;
2943                         if (use_tso) {
2944                                 card->perf_stats.large_send_bytes += tx_bytes;
2945                                 card->perf_stats.large_send_cnt++;
2946                         }
2947                         if (nr_frags) {
2948                                 card->perf_stats.sg_skbs_sent++;
2949                                 /* nr_frags + skb->data */
2950                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
2951                         }
2952                 }
2953                 rc = NETDEV_TX_OK;
2954         } else {
2955                 if (data_offset >= 0)
2956                         kmem_cache_free(qeth_core_header_cache, hdr);
2957
2958                 if (rc == -EBUSY) {
2959                         if (new_skb != skb)
2960                                 dev_kfree_skb_any(new_skb);
2961                         return NETDEV_TX_BUSY;
2962                 } else
2963                         goto tx_drop;
2964         }
2965
2966         netif_wake_queue(dev);
2967         if (card->options.performance_stats)
2968                 card->perf_stats.outbound_time += qeth_get_micros() -
2969                         card->perf_stats.outbound_start_time;
2970         return rc;
2971
2972 tx_drop:
2973         card->stats.tx_dropped++;
2974         card->stats.tx_errors++;
2975         if ((new_skb != skb) && new_skb)
2976                 dev_kfree_skb_any(new_skb);
2977         dev_kfree_skb_any(skb);
2978         netif_wake_queue(dev);
2979         return NETDEV_TX_OK;
2980 }
2981
2982 static int __qeth_l3_open(struct net_device *dev)
2983 {
2984         struct qeth_card *card = dev->ml_priv;
2985         int rc = 0;
2986
2987         QETH_CARD_TEXT(card, 4, "qethopen");
2988         if (card->state == CARD_STATE_UP)
2989                 return rc;
2990         if (card->state != CARD_STATE_SOFTSETUP)
2991                 return -ENODEV;
2992         card->data.state = CH_STATE_UP;
2993         card->state = CARD_STATE_UP;
2994         netif_start_queue(dev);
2995
2996         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2997                 napi_enable(&card->napi);
2998                 napi_schedule(&card->napi);
2999         } else
3000                 rc = -EIO;
3001         return rc;
3002 }
3003
3004 static int qeth_l3_open(struct net_device *dev)
3005 {
3006         struct qeth_card *card = dev->ml_priv;
3007
3008         QETH_CARD_TEXT(card, 5, "qethope_");
3009         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3010                 QETH_CARD_TEXT(card, 3, "openREC");
3011                 return -ERESTARTSYS;
3012         }
3013         return __qeth_l3_open(dev);
3014 }
3015
3016 static int qeth_l3_stop(struct net_device *dev)
3017 {
3018         struct qeth_card *card = dev->ml_priv;
3019
3020         QETH_CARD_TEXT(card, 4, "qethstop");
3021         netif_tx_disable(dev);
3022         if (card->state == CARD_STATE_UP) {
3023                 card->state = CARD_STATE_SOFTSETUP;
3024                 napi_disable(&card->napi);
3025         }
3026         return 0;
3027 }
3028
3029 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3030         .get_link = ethtool_op_get_link,
3031         .get_strings = qeth_core_get_strings,
3032         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3033         .get_sset_count = qeth_core_get_sset_count,
3034         .get_drvinfo = qeth_core_get_drvinfo,
3035         .get_settings = qeth_core_ethtool_get_settings,
3036 };
3037
3038 /*
3039  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3040  * NOARP on the netdevice is no option because it also turns off neighbor
3041  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3042  * arp resolution but we want the hard header (packet socket will work
3043  * e.g. tcpdump)
3044  */
3045 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3046 {
3047         n->nud_state = NUD_NOARP;
3048         memcpy(n->ha, "FAKELL", 6);
3049         n->output = n->ops->connected_output;
3050         return 0;
3051 }
3052
3053 static int
3054 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3055 {
3056         if (np->tbl->family == AF_INET)
3057                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3058
3059         return 0;
3060 }
3061
3062 static const struct net_device_ops qeth_l3_netdev_ops = {
3063         .ndo_open               = qeth_l3_open,
3064         .ndo_stop               = qeth_l3_stop,
3065         .ndo_get_stats          = qeth_get_stats,
3066         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3067         .ndo_validate_addr      = eth_validate_addr,
3068         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3069         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3070         .ndo_change_mtu         = qeth_change_mtu,
3071         .ndo_fix_features       = qeth_fix_features,
3072         .ndo_set_features       = qeth_set_features,
3073         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3074         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3075         .ndo_tx_timeout         = qeth_tx_timeout,
3076 };
3077
3078 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3079         .ndo_open               = qeth_l3_open,
3080         .ndo_stop               = qeth_l3_stop,
3081         .ndo_get_stats          = qeth_get_stats,
3082         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3083         .ndo_validate_addr      = eth_validate_addr,
3084         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3085         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3086         .ndo_change_mtu         = qeth_change_mtu,
3087         .ndo_fix_features       = qeth_fix_features,
3088         .ndo_set_features       = qeth_set_features,
3089         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3090         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3091         .ndo_tx_timeout         = qeth_tx_timeout,
3092         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3093 };
3094
3095 static int qeth_l3_setup_netdev(struct qeth_card *card)
3096 {
3097         int rc;
3098
3099         if (card->info.type == QETH_CARD_TYPE_OSD ||
3100             card->info.type == QETH_CARD_TYPE_OSX) {
3101                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3102                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3103                         pr_info("qeth_l3: ignoring TR device\n");
3104                         return -ENODEV;
3105                 } else {
3106                         card->dev = alloc_etherdev(0);
3107                         if (!card->dev)
3108                                 return -ENODEV;
3109                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3110
3111                         /*IPv6 address autoconfiguration stuff*/
3112                         qeth_l3_get_unique_id(card);
3113                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3114                                 card->dev->dev_id = card->info.unique_id &
3115                                                          0xffff;
3116                         if (!card->info.guestlan) {
3117                                 card->dev->hw_features = NETIF_F_SG |
3118                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3119                                         NETIF_F_TSO;
3120                                 card->dev->vlan_features = NETIF_F_SG |
3121                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3122                                         NETIF_F_TSO;
3123                         }
3124                 }
3125         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3126                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
3127                                          ether_setup);
3128                 if (!card->dev)
3129                         return -ENODEV;
3130                 card->dev->flags |= IFF_NOARP;
3131                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3132                 rc = qeth_l3_iqd_read_initial_mac(card);
3133                 if (rc)
3134                         return rc;
3135                 if (card->options.hsuid[0])
3136                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3137         } else
3138                 return -ENODEV;
3139
3140         card->dev->ml_priv = card;
3141         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3142         card->dev->mtu = card->info.initial_mtu;
3143         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
3144         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
3145                                 NETIF_F_HW_VLAN_CTAG_RX |
3146                                 NETIF_F_HW_VLAN_CTAG_FILTER;
3147         netif_keep_dst(card->dev);
3148         card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
3149                                   PAGE_SIZE;
3150
3151         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3152         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3153         netif_carrier_off(card->dev);
3154         return register_netdev(card->dev);
3155 }
3156
3157 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3158 {
3159         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3160
3161         qeth_l3_create_device_attributes(&gdev->dev);
3162         card->options.layer2 = 0;
3163         card->info.hwtrap = 0;
3164         return 0;
3165 }
3166
3167 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3168 {
3169         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3170
3171         qeth_l3_remove_device_attributes(&cgdev->dev);
3172
3173         qeth_set_allowed_threads(card, 0, 1);
3174         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3175
3176         if (cgdev->state == CCWGROUP_ONLINE)
3177                 qeth_l3_set_offline(cgdev);
3178
3179         if (card->dev) {
3180                 netif_napi_del(&card->napi);
3181                 unregister_netdev(card->dev);
3182                 card->dev = NULL;
3183         }
3184
3185         qeth_l3_clear_ip_htable(card, 0);
3186         qeth_l3_clear_ipato_list(card);
3187         return;
3188 }
3189
3190 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3191 {
3192         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3193         int rc = 0;
3194         enum qeth_card_states recover_flag;
3195
3196         mutex_lock(&card->discipline_mutex);
3197         mutex_lock(&card->conf_mutex);
3198         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3199         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3200
3201         recover_flag = card->state;
3202         rc = qeth_core_hardsetup_card(card);
3203         if (rc) {
3204                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3205                 rc = -ENODEV;
3206                 goto out_remove;
3207         }
3208
3209         if (!card->dev && qeth_l3_setup_netdev(card)) {
3210                 rc = -ENODEV;
3211                 goto out_remove;
3212         }
3213
3214         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3215                 if (card->info.hwtrap &&
3216                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3217                         card->info.hwtrap = 0;
3218         } else
3219                 card->info.hwtrap = 0;
3220
3221         card->state = CARD_STATE_HARDSETUP;
3222         memset(&card->rx, 0, sizeof(struct qeth_rx));
3223         qeth_print_status_message(card);
3224
3225         /* softsetup */
3226         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3227
3228         rc = qeth_send_startlan(card);
3229         if (rc) {
3230                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3231                 if (rc == 0xe080) {
3232                         dev_warn(&card->gdev->dev,
3233                                 "The LAN is offline\n");
3234                         card->lan_online = 0;
3235                         goto contin;
3236                 }
3237                 rc = -ENODEV;
3238                 goto out_remove;
3239         } else
3240                 card->lan_online = 1;
3241
3242 contin:
3243         rc = qeth_l3_setadapter_parms(card);
3244         if (rc)
3245                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3246         if (!card->options.sniffer) {
3247                 rc = qeth_l3_start_ipassists(card);
3248                 if (rc) {
3249                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3250                         goto out_remove;
3251                 }
3252                 rc = qeth_l3_setrouting_v4(card);
3253                 if (rc)
3254                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3255                 rc = qeth_l3_setrouting_v6(card);
3256                 if (rc)
3257                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3258         }
3259         netif_tx_disable(card->dev);
3260
3261         rc = qeth_init_qdio_queues(card);
3262         if (rc) {
3263                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3264                 rc = -ENODEV;
3265                 goto out_remove;
3266         }
3267         card->state = CARD_STATE_SOFTSETUP;
3268
3269         qeth_set_allowed_threads(card, 0xffffffff, 0);
3270         qeth_l3_recover_ip(card);
3271         if (card->lan_online)
3272                 netif_carrier_on(card->dev);
3273         else
3274                 netif_carrier_off(card->dev);
3275         if (recover_flag == CARD_STATE_RECOVER) {
3276                 rtnl_lock();
3277                 if (recovery_mode)
3278                         __qeth_l3_open(card->dev);
3279                 else
3280                         dev_open(card->dev);
3281                 qeth_l3_set_multicast_list(card->dev);
3282                 qeth_recover_features(card->dev);
3283                 rtnl_unlock();
3284         }
3285         qeth_trace_features(card);
3286         /* let user_space know that device is online */
3287         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3288         mutex_unlock(&card->conf_mutex);
3289         mutex_unlock(&card->discipline_mutex);
3290         return 0;
3291 out_remove:
3292         qeth_l3_stop_card(card, 0);
3293         ccw_device_set_offline(CARD_DDEV(card));
3294         ccw_device_set_offline(CARD_WDEV(card));
3295         ccw_device_set_offline(CARD_RDEV(card));
3296         qdio_free(CARD_DDEV(card));
3297         if (recover_flag == CARD_STATE_RECOVER)
3298                 card->state = CARD_STATE_RECOVER;
3299         else
3300                 card->state = CARD_STATE_DOWN;
3301         mutex_unlock(&card->conf_mutex);
3302         mutex_unlock(&card->discipline_mutex);
3303         return rc;
3304 }
3305
3306 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3307 {
3308         return __qeth_l3_set_online(gdev, 0);
3309 }
3310
3311 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3312                         int recovery_mode)
3313 {
3314         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3315         int rc = 0, rc2 = 0, rc3 = 0;
3316         enum qeth_card_states recover_flag;
3317
3318         mutex_lock(&card->discipline_mutex);
3319         mutex_lock(&card->conf_mutex);
3320         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3321         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3322
3323         if (card->dev && netif_carrier_ok(card->dev))
3324                 netif_carrier_off(card->dev);
3325         recover_flag = card->state;
3326         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3327                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3328                 card->info.hwtrap = 1;
3329         }
3330         qeth_l3_stop_card(card, recovery_mode);
3331         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3332                 rtnl_lock();
3333                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3334                 rtnl_unlock();
3335         }
3336         rc  = ccw_device_set_offline(CARD_DDEV(card));
3337         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3338         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3339         if (!rc)
3340                 rc = (rc2) ? rc2 : rc3;
3341         if (rc)
3342                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3343         qdio_free(CARD_DDEV(card));
3344         if (recover_flag == CARD_STATE_UP)
3345                 card->state = CARD_STATE_RECOVER;
3346         /* let user_space know that device is offline */
3347         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3348         mutex_unlock(&card->conf_mutex);
3349         mutex_unlock(&card->discipline_mutex);
3350         return 0;
3351 }
3352
3353 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3354 {
3355         return __qeth_l3_set_offline(cgdev, 0);
3356 }
3357
3358 static int qeth_l3_recover(void *ptr)
3359 {
3360         struct qeth_card *card;
3361         int rc = 0;
3362
3363         card = (struct qeth_card *) ptr;
3364         QETH_CARD_TEXT(card, 2, "recover1");
3365         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3366         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3367                 return 0;
3368         QETH_CARD_TEXT(card, 2, "recover2");
3369         dev_warn(&card->gdev->dev,
3370                 "A recovery process has been started for the device\n");
3371         qeth_set_recovery_task(card);
3372         __qeth_l3_set_offline(card->gdev, 1);
3373         rc = __qeth_l3_set_online(card->gdev, 1);
3374         if (!rc)
3375                 dev_info(&card->gdev->dev,
3376                         "Device successfully recovered!\n");
3377         else {
3378                 qeth_close_dev(card);
3379                 dev_warn(&card->gdev->dev, "The qeth device driver "
3380                                 "failed to recover an error on the device\n");
3381         }
3382         qeth_clear_recovery_task(card);
3383         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3384         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3385         return 0;
3386 }
3387
3388 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3389 {
3390         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3391         qeth_set_allowed_threads(card, 0, 1);
3392         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3393                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3394         qeth_qdio_clear_card(card, 0);
3395         qeth_clear_qdio_buffers(card);
3396         qdio_free(CARD_DDEV(card));
3397 }
3398
3399 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3400 {
3401         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3402
3403         if (card->dev)
3404                 netif_device_detach(card->dev);
3405         qeth_set_allowed_threads(card, 0, 1);
3406         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3407         if (gdev->state == CCWGROUP_OFFLINE)
3408                 return 0;
3409         if (card->state == CARD_STATE_UP) {
3410                 if (card->info.hwtrap)
3411                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3412                 __qeth_l3_set_offline(card->gdev, 1);
3413         } else
3414                 __qeth_l3_set_offline(card->gdev, 0);
3415         return 0;
3416 }
3417
3418 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3419 {
3420         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3421         int rc = 0;
3422
3423         if (gdev->state == CCWGROUP_OFFLINE)
3424                 goto out;
3425
3426         if (card->state == CARD_STATE_RECOVER) {
3427                 rc = __qeth_l3_set_online(card->gdev, 1);
3428                 if (rc) {
3429                         rtnl_lock();
3430                         dev_close(card->dev);
3431                         rtnl_unlock();
3432                 }
3433         } else
3434                 rc = __qeth_l3_set_online(card->gdev, 0);
3435 out:
3436         qeth_set_allowed_threads(card, 0xffffffff, 0);
3437         if (card->dev)
3438                 netif_device_attach(card->dev);
3439         if (rc)
3440                 dev_warn(&card->gdev->dev, "The qeth device driver "
3441                         "failed to recover an error on the device\n");
3442         return rc;
3443 }
3444
3445 /* Returns zero if the command is successfully "consumed" */
3446 static int qeth_l3_control_event(struct qeth_card *card,
3447                                         struct qeth_ipa_cmd *cmd)
3448 {
3449         return 1;
3450 }
3451
3452 struct qeth_discipline qeth_l3_discipline = {
3453         .start_poll = qeth_qdio_start_poll,
3454         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3455         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3456         .recover = qeth_l3_recover,
3457         .setup = qeth_l3_probe_device,
3458         .remove = qeth_l3_remove_device,
3459         .set_online = qeth_l3_set_online,
3460         .set_offline = qeth_l3_set_offline,
3461         .shutdown = qeth_l3_shutdown,
3462         .freeze = qeth_l3_pm_suspend,
3463         .thaw = qeth_l3_pm_resume,
3464         .restore = qeth_l3_pm_resume,
3465         .control_event_handler = qeth_l3_control_event,
3466 };
3467 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3468
3469 static int qeth_l3_ip_event(struct notifier_block *this,
3470                             unsigned long event, void *ptr)
3471 {
3472
3473         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3474         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3475         struct qeth_ipaddr *addr;
3476         struct qeth_card *card;
3477
3478         if (dev_net(dev) != &init_net)
3479                 return NOTIFY_DONE;
3480
3481         card = qeth_l3_get_card_from_dev(dev);
3482         if (!card)
3483                 return NOTIFY_DONE;
3484         QETH_CARD_TEXT(card, 3, "ipevent");
3485
3486         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3487         if (addr) {
3488                 addr->u.a4.addr = ifa->ifa_address;
3489                 addr->u.a4.mask = ifa->ifa_mask;
3490                 addr->type = QETH_IP_TYPE_NORMAL;
3491         } else
3492                 return NOTIFY_DONE;
3493
3494         switch (event) {
3495         case NETDEV_UP:
3496                 spin_lock_bh(&card->ip_lock);
3497                 qeth_l3_add_ip(card, addr);
3498                 spin_unlock_bh(&card->ip_lock);
3499                 break;
3500         case NETDEV_DOWN:
3501                 spin_lock_bh(&card->ip_lock);
3502                 qeth_l3_delete_ip(card, addr);
3503                 spin_unlock_bh(&card->ip_lock);
3504                 break;
3505         }
3506
3507         kfree(addr);
3508         return NOTIFY_DONE;
3509 }
3510
3511 static struct notifier_block qeth_l3_ip_notifier = {
3512         qeth_l3_ip_event,
3513         NULL,
3514 };
3515
3516 #ifdef CONFIG_QETH_IPV6
3517 /**
3518  * IPv6 event handler
3519  */
3520 static int qeth_l3_ip6_event(struct notifier_block *this,
3521                              unsigned long event, void *ptr)
3522 {
3523         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3524         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3525         struct qeth_ipaddr *addr;
3526         struct qeth_card *card;
3527
3528         card = qeth_l3_get_card_from_dev(dev);
3529         if (!card)
3530                 return NOTIFY_DONE;
3531         QETH_CARD_TEXT(card, 3, "ip6event");
3532         if (!qeth_is_supported(card, IPA_IPV6))
3533                 return NOTIFY_DONE;
3534
3535         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3536         if (addr) {
3537                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3538                 addr->u.a6.pfxlen = ifa->prefix_len;
3539                 addr->type = QETH_IP_TYPE_NORMAL;
3540         } else
3541                 return NOTIFY_DONE;
3542
3543         switch (event) {
3544         case NETDEV_UP:
3545                 spin_lock_bh(&card->ip_lock);
3546                 qeth_l3_add_ip(card, addr);
3547                 spin_unlock_bh(&card->ip_lock);
3548                 break;
3549         case NETDEV_DOWN:
3550                 spin_lock_bh(&card->ip_lock);
3551                 qeth_l3_delete_ip(card, addr);
3552                 spin_unlock_bh(&card->ip_lock);
3553                 break;
3554         }
3555
3556         kfree(addr);
3557         return NOTIFY_DONE;
3558 }
3559
3560 static struct notifier_block qeth_l3_ip6_notifier = {
3561         qeth_l3_ip6_event,
3562         NULL,
3563 };
3564 #endif
3565
3566 static int qeth_l3_register_notifiers(void)
3567 {
3568         int rc;
3569
3570         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3571         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3572         if (rc)
3573                 return rc;
3574 #ifdef CONFIG_QETH_IPV6
3575         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3576         if (rc) {
3577                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3578                 return rc;
3579         }
3580 #else
3581         pr_warn("There is no IPv6 support for the layer 3 discipline\n");
3582 #endif
3583         return 0;
3584 }
3585
3586 static void qeth_l3_unregister_notifiers(void)
3587 {
3588
3589         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3590         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3591 #ifdef CONFIG_QETH_IPV6
3592         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3593 #endif /* QETH_IPV6 */
3594 }
3595
3596 static int __init qeth_l3_init(void)
3597 {
3598         int rc = 0;
3599
3600         pr_info("register layer 3 discipline\n");
3601         rc = qeth_l3_register_notifiers();
3602         return rc;
3603 }
3604
3605 static void __exit qeth_l3_exit(void)
3606 {
3607         qeth_l3_unregister_notifiers();
3608         pr_info("unregister layer 3 discipline\n");
3609 }
3610
3611 module_init(qeth_l3_init);
3612 module_exit(qeth_l3_exit);
3613 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3614 MODULE_DESCRIPTION("qeth layer 3 discipline");
3615 MODULE_LICENSE("GPL");