drivers/s390/net/qeth_l3_main.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *    Copyright IBM Corp. 2007, 2009
   4  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   5  *               Frank Pavlic <fpavlic@de.ibm.com>,
   6  *               Thomas Spatzier <tspat@de.ibm.com>,
   7  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   8  */
   9
  10 #define KMSG_COMPONENT "qeth"
  11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  12
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/bitops.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/ip.h>
  21 #include <linux/in.h>
  22 #include <linux/ipv6.h>
  23 #include <linux/inetdevice.h>
  24 #include <linux/igmp.h>
  25 #include <linux/slab.h>
  26 #include <linux/if_ether.h>
  27 #include <linux/if_vlan.h>
  28 #include <linux/skbuff.h>
  29
  30 #include <net/ip.h>
  31 #include <net/arp.h>
  32 #include <net/route.h>
  33 #include <net/ipv6.h>
  34 #include <net/ip6_route.h>
  35 #include <net/ip6_fib.h>
  36 #include <net/ip6_checksum.h>
  37 #include <net/iucv/af_iucv.h>
  38 #include <linux/hashtable.h>
  39
  40 #include "qeth_l3.h"
  41
  42
  43 static int qeth_l3_set_offline(struct ccwgroup_device *);
  44 static int qeth_l3_stop(struct net_device *);
  45 static void qeth_l3_set_rx_mode(struct net_device *dev);
  46 static int qeth_l3_register_addr_entry(struct qeth_card *,
  47                 struct qeth_ipaddr *);
  48 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  49                 struct qeth_ipaddr *);
  50
  51 static int qeth_l3_isxdigit(char *buf)
  52 {
  53         while (*buf) {
  54                 if (!isxdigit(*buf++))
  55                         return 0;
  56         }
  57         return 1;
  58 }
  59
  60 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  61 {
  62         sprintf(buf, "%pI4", addr);
  63 }
  64
  65 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  66 {
  67         int count = 0, rc = 0;
  68         unsigned int in[4];
  69         char c;
  70
  71         rc = sscanf(buf, "%u.%u.%u.%u%c",
  72                     &in[0], &in[1], &in[2], &in[3], &c);
  73         if (rc != 4 && (rc != 5 || c != '\n'))
  74                 return -EINVAL;
  75         for (count = 0; count < 4; count++) {
  76                 if (in[count] > 255)
  77                         return -EINVAL;
  78                 addr[count] = in[count];
  79         }
  80         return 0;
  81 }
  82
  83 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  84 {
  85         sprintf(buf, "%pI6", addr);
  86 }
  87
  88 static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  89 {
  90         const char *end, *end_tmp, *start;
  91         __u16 *in;
  92         char num[5];
  93         int num2, cnt, out, found, save_cnt;
  94         unsigned short in_tmp[8] = {0, };
  95
  96         cnt = out = found = save_cnt = num2 = 0;
  97         end = start = buf;
  98         in = (__u16 *) addr;
  99         memset(in, 0, 16);
 100         while (*end) {
 101                 end = strchr(start, ':');
 102                 if (end == NULL) {
 103                         end = buf + strlen(buf);
 104                         end_tmp = strchr(start, '\n');
 105                         if (end_tmp != NULL)
 106                                 end = end_tmp;
 107                         out = 1;
 108                 }
 109                 if ((end - start)) {
 110                         memset(num, 0, 5);
 111                         if ((end - start) > 4)
 112                                 return -EINVAL;
 113                         memcpy(num, start, end - start);
 114                         if (!qeth_l3_isxdigit(num))
 115                                 return -EINVAL;
 116                         sscanf(start, "%x", &num2);
 117                         if (found)
 118                                 in_tmp[save_cnt++] = num2;
 119                         else
 120                                 in[cnt++] = num2;
 121                         if (out)
 122                                 break;
 123                 } else {
 124                         if (found)
 125                                 return -EINVAL;
 126                         found = 1;
 127                 }
 128                 start = ++end;
 129         }
 130         if (cnt + save_cnt > 8)
 131                 return -EINVAL;
 132         cnt = 7;
 133         while (save_cnt)
 134                 in[cnt--] = in_tmp[--save_cnt];
 135         return 0;
 136 }
 137
 138 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 139                                 char *buf)
 140 {
 141         if (proto == QETH_PROT_IPV4)
 142                 qeth_l3_ipaddr4_to_string(addr, buf);
 143         else if (proto == QETH_PROT_IPV6)
 144                 qeth_l3_ipaddr6_to_string(addr, buf);
 145 }
 146
 147 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 148                                 __u8 *addr)
 149 {
 150         if (proto == QETH_PROT_IPV4)
 151                 return qeth_l3_string_to_ipaddr4(buf, addr);
 152         else if (proto == QETH_PROT_IPV6)
 153                 return qeth_l3_string_to_ipaddr6(buf, addr);
 154         else
 155                 return -EINVAL;
 156 }
 157
 158 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 159 {
 160         int i, j;
 161         u8 octet;
 162
 163         for (i = 0; i < len; ++i) {
 164                 octet = addr[i];
 165                 for (j = 7; j >= 0; --j) {
 166                         bits[i*8 + j] = octet & 1;
 167                         octet >>= 1;
 168                 }
 169         }
 170 }
 171
 172 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 173                                              struct qeth_ipaddr *addr)
 174 {
 175         struct qeth_ipato_entry *ipatoe;
 176         u8 addr_bits[128] = {0, };
 177         u8 ipatoe_bits[128] = {0, };
 178         int rc = 0;
 179
 180         if (!card->ipato.enabled)
 181                 return 0;
 182         if (addr->type != QETH_IP_TYPE_NORMAL)
 183                 return 0;
 184
 185         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 186                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 187         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 188                 if (addr->proto != ipatoe->proto)
 189                         continue;
 190                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 191                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 192                                           4 : 16);
 193                 if (addr->proto == QETH_PROT_IPV4)
 194                         rc = !memcmp(addr_bits, ipatoe_bits,
 195                                      min(32, ipatoe->mask_bits));
 196                 else
 197                         rc = !memcmp(addr_bits, ipatoe_bits,
 198                                      min(128, ipatoe->mask_bits));
 199                 if (rc)
 200                         break;
 201         }
 202         /* invert? */
 203         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 204                 rc = !rc;
 205         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 206                 rc = !rc;
 207
 208         return rc;
 209 }
 210
 211 inline int
 212 qeth_l3_ipaddrs_is_equal(struct qeth_ipaddr *addr1, struct qeth_ipaddr *addr2)
 213 {
 214         return addr1->proto == addr2->proto &&
 215                !memcmp(&addr1->u, &addr2->u, sizeof(addr1->u)) &&
 216                ether_addr_equal_64bits(addr1->mac, addr2->mac);
 217 }
 218
 219 static struct qeth_ipaddr *
 220 qeth_l3_ip_from_hash(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 221 {
 222         struct qeth_ipaddr *addr;
 223
 224         if (tmp_addr->is_multicast) {
 225                 hash_for_each_possible(card->ip_mc_htable,  addr,
 226                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 227                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 228                                 return addr;
 229         } else {
 230                 hash_for_each_possible(card->ip_htable,  addr,
 231                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 232                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 233                                 return addr;
 234         }
 235
 236         return NULL;
 237 }
 238
 239 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 240 {
 241         int rc = 0;
 242         struct qeth_ipaddr *addr;
 243
 244         QETH_CARD_TEXT(card, 4, "delip");
 245
 246         if (tmp_addr->proto == QETH_PROT_IPV4)
 247                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 248         else {
 249                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 250                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 251         }
 252
 253         addr = qeth_l3_ip_from_hash(card, tmp_addr);
 254         if (!addr)
 255                 return -ENOENT;
 256
 257         addr->ref_counter--;
 258         if (addr->ref_counter > 0 && (addr->type == QETH_IP_TYPE_NORMAL ||
 259                                       addr->type == QETH_IP_TYPE_RXIP))
 260                 return rc;
 261         if (addr->in_progress)
 262                 return -EINPROGRESS;
 263
 264         if (!qeth_card_hw_is_reachable(card)) {
 265                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
 266                 return 0;
 267         }
 268
 269         rc = qeth_l3_deregister_addr_entry(card, addr);
 270
 271         hash_del(&addr->hnode);
 272         kfree(addr);
 273
 274         return rc;
 275 }
 276
 277 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 278 {
 279         int rc = 0;
 280         struct qeth_ipaddr *addr;
 281
 282         QETH_CARD_TEXT(card, 4, "addip");
 283
 284         if (tmp_addr->proto == QETH_PROT_IPV4)
 285                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 286         else {
 287                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 288                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 289         }
 290
 291         addr = qeth_l3_ip_from_hash(card, tmp_addr);
 292         if (!addr) {
 293                 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
 294                 if (!addr)
 295                         return -ENOMEM;
 296
 297                 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
 298                 addr->ref_counter = 1;
 299
 300                 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 301                         QETH_CARD_TEXT(card, 2, "tkovaddr");
 302                         addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 303                 }
 304                 hash_add(card->ip_htable, &addr->hnode,
 305                                 qeth_l3_ipaddr_hash(addr));
 306
 307                 if (!qeth_card_hw_is_reachable(card)) {
 308                         addr->disp_flag = QETH_DISP_ADDR_ADD;
 309                         return 0;
 310                 }
 311
 312                 /* qeth_l3_register_addr_entry can go to sleep
 313                  * if we add a IPV4 addr. It is caused by the reason
 314                  * that SETIP ipa cmd starts ARP staff for IPV4 addr.
 315                  * Thus we should unlock spinlock, and make a protection
 316                  * using in_progress variable to indicate that there is
 317                  * an hardware operation with this IPV4 address
 318                  */
 319                 if (addr->proto == QETH_PROT_IPV4) {
 320                         addr->in_progress = 1;
 321                         spin_unlock_bh(&card->ip_lock);
 322                         rc = qeth_l3_register_addr_entry(card, addr);
 323                         spin_lock_bh(&card->ip_lock);
 324                         addr->in_progress = 0;
 325                 } else
 326                         rc = qeth_l3_register_addr_entry(card, addr);
 327
 328                 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
 329                                 (rc == IPA_RC_LAN_OFFLINE)) {
 330                         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 331                         if (addr->ref_counter < 1) {
 332                                 qeth_l3_delete_ip(card, addr);
 333                                 kfree(addr);
 334                         }
 335                 } else {
 336                         hash_del(&addr->hnode);
 337                         kfree(addr);
 338                 }
 339         } else {
 340                 if (addr->type == QETH_IP_TYPE_NORMAL ||
 341                     addr->type == QETH_IP_TYPE_RXIP)
 342                         addr->ref_counter++;
 343         }
 344
 345         return rc;
 346 }
 347
 348
 349 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 350                                 enum qeth_prot_versions prot)
 351 {
 352         struct qeth_ipaddr *addr;
 353
 354         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 355         if (!addr)
 356                 return NULL;
 357
 358         addr->type = QETH_IP_TYPE_NORMAL;
 359         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 360         addr->proto = prot;
 361
 362         return addr;
 363 }
 364
 365 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 366 {
 367         struct qeth_ipaddr *addr;
 368         struct hlist_node *tmp;
 369         int i;
 370
 371         QETH_CARD_TEXT(card, 4, "clearip");
 372
 373         if (recover && card->options.sniffer)
 374                 return;
 375
 376         spin_lock_bh(&card->ip_lock);
 377
 378         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 379                 if (!recover) {
 380                         hash_del(&addr->hnode);
 381                         kfree(addr);
 382                         continue;
 383                 }
 384                 addr->disp_flag = QETH_DISP_ADDR_ADD;
 385         }
 386
 387         spin_unlock_bh(&card->ip_lock);
 388
 389         spin_lock_bh(&card->mclock);
 390
 391         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
 392                 hash_del(&addr->hnode);
 393                 kfree(addr);
 394         }
 395
 396         spin_unlock_bh(&card->mclock);
 397
 398
 399 }
 400 static void qeth_l3_recover_ip(struct qeth_card *card)
 401 {
 402         struct qeth_ipaddr *addr;
 403         struct hlist_node *tmp;
 404         int i;
 405         int rc;
 406
 407         QETH_CARD_TEXT(card, 4, "recovrip");
 408
 409         spin_lock_bh(&card->ip_lock);
 410
 411         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 412                 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
 413                         qeth_l3_deregister_addr_entry(card, addr);
 414                         hash_del(&addr->hnode);
 415                         kfree(addr);
 416                 } else if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
 417                         if (addr->proto == QETH_PROT_IPV4) {
 418                                 addr->in_progress = 1;
 419                                 spin_unlock_bh(&card->ip_lock);
 420                                 rc = qeth_l3_register_addr_entry(card, addr);
 421                                 spin_lock_bh(&card->ip_lock);
 422                                 addr->in_progress = 0;
 423                         } else
 424                                 rc = qeth_l3_register_addr_entry(card, addr);
 425
 426                         if (!rc) {
 427                                 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 428                                 if (addr->ref_counter < 1)
 429                                         qeth_l3_delete_ip(card, addr);
 430                         } else {
 431                                 hash_del(&addr->hnode);
 432                                 kfree(addr);
 433                         }
 434                 }
 435         }
 436
 437         spin_unlock_bh(&card->ip_lock);
 438
 439 }
 440
 441 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 442                         struct qeth_ipaddr *addr, int ipacmd)
 443 {
 444         int rc;
 445         struct qeth_cmd_buffer *iob;
 446         struct qeth_ipa_cmd *cmd;
 447
 448         QETH_CARD_TEXT(card, 4, "setdelmc");
 449
 450         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 451         if (!iob)
 452                 return -ENOMEM;
 453         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 454         ether_addr_copy(cmd->data.setdelipm.mac, addr->mac);
 455         if (addr->proto == QETH_PROT_IPV6)
 456                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 457                        sizeof(struct in6_addr));
 458         else
 459                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 460
 461         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 462
 463         return rc;
 464 }
 465
 466 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 467 {
 468         int i, j;
 469         for (i = 0; i < 16; i++) {
 470                 j = (len) - (i * 8);
 471                 if (j >= 8)
 472                         netmask[i] = 0xff;
 473                 else if (j > 0)
 474                         netmask[i] = (u8)(0xFF00 >> j);
 475                 else
 476                         netmask[i] = 0;
 477         }
 478 }
 479
 480 static int qeth_l3_send_setdelip(struct qeth_card *card,
 481                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 482 {
 483         int rc;
 484         struct qeth_cmd_buffer *iob;
 485         struct qeth_ipa_cmd *cmd;
 486         __u8 netmask[16];
 487
 488         QETH_CARD_TEXT(card, 4, "setdelip");
 489         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 490
 491         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 492         if (!iob)
 493                 return -ENOMEM;
 494         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 495         if (addr->proto == QETH_PROT_IPV6) {
 496                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 497                        sizeof(struct in6_addr));
 498                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 499                 memcpy(cmd->data.setdelip6.mask, netmask,
 500                        sizeof(struct in6_addr));
 501                 cmd->data.setdelip6.flags = flags;
 502         } else {
 503                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 504                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 505                 cmd->data.setdelip4.flags = flags;
 506         }
 507
 508         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 509
 510         return rc;
 511 }
 512
 513 static int qeth_l3_send_setrouting(struct qeth_card *card,
 514         enum qeth_routing_types type, enum qeth_prot_versions prot)
 515 {
 516         int rc;
 517         struct qeth_ipa_cmd *cmd;
 518         struct qeth_cmd_buffer *iob;
 519
 520         QETH_CARD_TEXT(card, 4, "setroutg");
 521         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 522         if (!iob)
 523                 return -ENOMEM;
 524         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 525         cmd->data.setrtg.type = (type);
 526         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 527
 528         return rc;
 529 }
 530
 531 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 532                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 533 {
 534         if (card->info.type == QETH_CARD_TYPE_IQD) {
 535                 switch (*type) {
 536                 case NO_ROUTER:
 537                 case PRIMARY_CONNECTOR:
 538                 case SECONDARY_CONNECTOR:
 539                 case MULTICAST_ROUTER:
 540                         return 0;
 541                 default:
 542                         goto out_inval;
 543                 }
 544         } else {
 545                 switch (*type) {
 546                 case NO_ROUTER:
 547                 case PRIMARY_ROUTER:
 548                 case SECONDARY_ROUTER:
 549                         return 0;
 550                 case MULTICAST_ROUTER:
 551                         if (qeth_is_ipafunc_supported(card, prot,
 552                                                       IPA_OSA_MC_ROUTER))
 553                                 return 0;
 554                 default:
 555                         goto out_inval;
 556                 }
 557         }
 558 out_inval:
 559         *type = NO_ROUTER;
 560         return -EINVAL;
 561 }
 562
 563 int qeth_l3_setrouting_v4(struct qeth_card *card)
 564 {
 565         int rc;
 566
 567         QETH_CARD_TEXT(card, 3, "setrtg4");
 568
 569         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 570                                   QETH_PROT_IPV4);
 571         if (rc)
 572                 return rc;
 573
 574         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 575                                   QETH_PROT_IPV4);
 576         if (rc) {
 577                 card->options.route4.type = NO_ROUTER;
 578                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 579                         " on %s. Type set to 'no router'.\n", rc,
 580                         QETH_CARD_IFNAME(card));
 581         }
 582         return rc;
 583 }
 584
 585 int qeth_l3_setrouting_v6(struct qeth_card *card)
 586 {
 587         int rc = 0;
 588
 589         QETH_CARD_TEXT(card, 3, "setrtg6");
 590
 591         if (!qeth_is_supported(card, IPA_IPV6))
 592                 return 0;
 593         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 594                                   QETH_PROT_IPV6);
 595         if (rc)
 596                 return rc;
 597
 598         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 599                                   QETH_PROT_IPV6);
 600         if (rc) {
 601                 card->options.route6.type = NO_ROUTER;
 602                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 603                         " on %s. Type set to 'no router'.\n", rc,
 604                         QETH_CARD_IFNAME(card));
 605         }
 606         return rc;
 607 }
 608
 609 /*
 610  * IP address takeover related functions
 611  */
 612
 613 /**
 614  * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
 615  *
 616  * Caller must hold ip_lock.
 617  */
 618 void qeth_l3_update_ipato(struct qeth_card *card)
 619 {
 620         struct qeth_ipaddr *addr;
 621         unsigned int i;
 622
 623         hash_for_each(card->ip_htable, i, addr, hnode) {
 624                 if (addr->type != QETH_IP_TYPE_NORMAL)
 625                         continue;
 626                 if (qeth_l3_is_addr_covered_by_ipato(card, addr))
 627                         addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 628                 else
 629                         addr->set_flags &= ~QETH_IPA_SETIP_TAKEOVER_FLAG;
 630         }
 631 }
 632
 633 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 634 {
 635         struct qeth_ipato_entry *ipatoe, *tmp;
 636
 637         spin_lock_bh(&card->ip_lock);
 638
 639         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 640                 list_del(&ipatoe->entry);
 641                 kfree(ipatoe);
 642         }
 643
 644         qeth_l3_update_ipato(card);
 645         spin_unlock_bh(&card->ip_lock);
 646 }
 647
 648 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 649                                 struct qeth_ipato_entry *new)
 650 {
 651         struct qeth_ipato_entry *ipatoe;
 652         int rc = 0;
 653
 654         QETH_CARD_TEXT(card, 2, "addipato");
 655
 656         spin_lock_bh(&card->ip_lock);
 657
 658         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 659                 if (ipatoe->proto != new->proto)
 660                         continue;
 661                 if (!memcmp(ipatoe->addr, new->addr,
 662                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 663                     (ipatoe->mask_bits == new->mask_bits)) {
 664                         rc = -EEXIST;
 665                         break;
 666                 }
 667         }
 668
 669         if (!rc) {
 670                 list_add_tail(&new->entry, &card->ipato.entries);
 671                 qeth_l3_update_ipato(card);
 672         }
 673
 674         spin_unlock_bh(&card->ip_lock);
 675
 676         return rc;
 677 }
 678
 679 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 680                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 681 {
 682         struct qeth_ipato_entry *ipatoe, *tmp;
 683
 684         QETH_CARD_TEXT(card, 2, "delipato");
 685
 686         spin_lock_bh(&card->ip_lock);
 687
 688         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 689                 if (ipatoe->proto != proto)
 690                         continue;
 691                 if (!memcmp(ipatoe->addr, addr,
 692                             (proto == QETH_PROT_IPV4)? 4:16) &&
 693                     (ipatoe->mask_bits == mask_bits)) {
 694                         list_del(&ipatoe->entry);
 695                         qeth_l3_update_ipato(card);
 696                         kfree(ipatoe);
 697                 }
 698         }
 699
 700         spin_unlock_bh(&card->ip_lock);
 701 }
 702
 703 /*
 704  * VIPA related functions
 705  */
 706 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 707               const u8 *addr)
 708 {
 709         struct qeth_ipaddr *ipaddr;
 710         int rc = 0;
 711
 712         ipaddr = qeth_l3_get_addr_buffer(proto);
 713         if (ipaddr) {
 714                 if (proto == QETH_PROT_IPV4) {
 715                         QETH_CARD_TEXT(card, 2, "addvipa4");
 716                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 717                         ipaddr->u.a4.mask = 0;
 718                 } else if (proto == QETH_PROT_IPV6) {
 719                         QETH_CARD_TEXT(card, 2, "addvipa6");
 720                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 721                         ipaddr->u.a6.pfxlen = 0;
 722                 }
 723                 ipaddr->type = QETH_IP_TYPE_VIPA;
 724                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 725                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 726         } else
 727                 return -ENOMEM;
 728
 729         spin_lock_bh(&card->ip_lock);
 730
 731         if (qeth_l3_ip_from_hash(card, ipaddr))
 732                 rc = -EEXIST;
 733         else
 734                 qeth_l3_add_ip(card, ipaddr);
 735
 736         spin_unlock_bh(&card->ip_lock);
 737
 738         kfree(ipaddr);
 739
 740         return rc;
 741 }
 742
 743 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 744               const u8 *addr)
 745 {
 746         struct qeth_ipaddr *ipaddr;
 747
 748         ipaddr = qeth_l3_get_addr_buffer(proto);
 749         if (ipaddr) {
 750                 if (proto == QETH_PROT_IPV4) {
 751                         QETH_CARD_TEXT(card, 2, "delvipa4");
 752                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 753                         ipaddr->u.a4.mask = 0;
 754                 } else if (proto == QETH_PROT_IPV6) {
 755                         QETH_CARD_TEXT(card, 2, "delvipa6");
 756                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 757                         ipaddr->u.a6.pfxlen = 0;
 758                 }
 759                 ipaddr->type = QETH_IP_TYPE_VIPA;
 760         } else
 761                 return;
 762
 763         spin_lock_bh(&card->ip_lock);
 764         qeth_l3_delete_ip(card, ipaddr);
 765         spin_unlock_bh(&card->ip_lock);
 766
 767         kfree(ipaddr);
 768 }
 769
 770 /*
 771  * proxy ARP related functions
 772  */
 773 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 774               const u8 *addr)
 775 {
 776         struct qeth_ipaddr *ipaddr;
 777         int rc = 0;
 778
 779         ipaddr = qeth_l3_get_addr_buffer(proto);
 780         if (ipaddr) {
 781                 if (proto == QETH_PROT_IPV4) {
 782                         QETH_CARD_TEXT(card, 2, "addrxip4");
 783                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 784                         ipaddr->u.a4.mask = 0;
 785                 } else if (proto == QETH_PROT_IPV6) {
 786                         QETH_CARD_TEXT(card, 2, "addrxip6");
 787                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 788                         ipaddr->u.a6.pfxlen = 0;
 789                 }
 790
 791                 ipaddr->type = QETH_IP_TYPE_RXIP;
 792                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 793                 ipaddr->del_flags = 0;
 794         } else
 795                 return -ENOMEM;
 796
 797         spin_lock_bh(&card->ip_lock);
 798
 799         if (qeth_l3_ip_from_hash(card, ipaddr))
 800                 rc = -EEXIST;
 801         else
 802                 qeth_l3_add_ip(card, ipaddr);
 803
 804         spin_unlock_bh(&card->ip_lock);
 805
 806         kfree(ipaddr);
 807
 808         return rc;
 809 }
 810
 811 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 812                         const u8 *addr)
 813 {
 814         struct qeth_ipaddr *ipaddr;
 815
 816         ipaddr = qeth_l3_get_addr_buffer(proto);
 817         if (ipaddr) {
 818                 if (proto == QETH_PROT_IPV4) {
 819                         QETH_CARD_TEXT(card, 2, "delrxip4");
 820                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 821                         ipaddr->u.a4.mask = 0;
 822                 } else if (proto == QETH_PROT_IPV6) {
 823                         QETH_CARD_TEXT(card, 2, "delrxip6");
 824                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 825                         ipaddr->u.a6.pfxlen = 0;
 826                 }
 827                 ipaddr->type = QETH_IP_TYPE_RXIP;
 828         } else
 829                 return;
 830
 831         spin_lock_bh(&card->ip_lock);
 832         qeth_l3_delete_ip(card, ipaddr);
 833         spin_unlock_bh(&card->ip_lock);
 834
 835         kfree(ipaddr);
 836 }
 837
 838 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 839                                 struct qeth_ipaddr *addr)
 840 {
 841         char buf[50];
 842         int rc = 0;
 843         int cnt = 3;
 844
 845
 846         if (addr->proto == QETH_PROT_IPV4) {
 847                 QETH_CARD_TEXT(card, 2, "setaddr4");
 848                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 849         } else if (addr->proto == QETH_PROT_IPV6) {
 850                 QETH_CARD_TEXT(card, 2, "setaddr6");
 851                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 852                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 853         } else {
 854                 QETH_CARD_TEXT(card, 2, "setaddr?");
 855                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 856         }
 857         do {
 858                 if (addr->is_multicast)
 859                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 860                 else
 861                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 862                                         addr->set_flags);
 863                 if (rc)
 864                         QETH_CARD_TEXT(card, 2, "failed");
 865         } while ((--cnt > 0) && rc);
 866         if (rc) {
 867                 QETH_CARD_TEXT(card, 2, "FAILED");
 868                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 869                 dev_warn(&card->gdev->dev,
 870                         "Registering IP address %s failed\n", buf);
 871         }
 872         return rc;
 873 }
 874
 875 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 876                                                 struct qeth_ipaddr *addr)
 877 {
 878         int rc = 0;
 879
 880         if (addr->proto == QETH_PROT_IPV4) {
 881                 QETH_CARD_TEXT(card, 2, "deladdr4");
 882                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 883         } else if (addr->proto == QETH_PROT_IPV6) {
 884                 QETH_CARD_TEXT(card, 2, "deladdr6");
 885                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 886                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 887         } else {
 888                 QETH_CARD_TEXT(card, 2, "deladdr?");
 889                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 890         }
 891         if (addr->is_multicast)
 892                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 893         else
 894                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 895                                         addr->del_flags);
 896         if (rc)
 897                 QETH_CARD_TEXT(card, 2, "failed");
 898
 899         return rc;
 900 }
 901
 902 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 903 {
 904         int rc = 0;
 905
 906         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 907
 908         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 909                 rc = qeth_setadpparms_change_macaddr(card);
 910                 if (rc)
 911                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
 912                                 " address failed\n");
 913         }
 914
 915         return rc;
 916 }
 917
 918 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
 919                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
 920 {
 921         int rc;
 922         struct qeth_cmd_buffer *iob;
 923
 924         QETH_CARD_TEXT(card, 4, "simassp6");
 925         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
 926                                        0, QETH_PROT_IPV6);
 927         if (!iob)
 928                 return -ENOMEM;
 929         rc = qeth_send_setassparms(card, iob, 0, 0,
 930                                    qeth_setassparms_cb, NULL);
 931         return rc;
 932 }
 933
 934 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
 935 {
 936         int rc;
 937
 938         QETH_CARD_TEXT(card, 3, "ipaarp");
 939
 940         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 941                 dev_info(&card->gdev->dev,
 942                         "ARP processing not supported on %s!\n",
 943                         QETH_CARD_IFNAME(card));
 944                 return 0;
 945         }
 946         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
 947                                           IPA_CMD_ASS_START, 0);
 948         if (rc) {
 949                 dev_warn(&card->gdev->dev,
 950                         "Starting ARP processing support for %s failed\n",
 951                         QETH_CARD_IFNAME(card));
 952         }
 953         return rc;
 954 }
 955
 956 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
 957 {
 958         int rc;
 959
 960         QETH_CARD_TEXT(card, 3, "stsrcmac");
 961
 962         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
 963                 dev_info(&card->gdev->dev,
 964                         "Inbound source MAC-address not supported on %s\n",
 965                         QETH_CARD_IFNAME(card));
 966                 return -EOPNOTSUPP;
 967         }
 968
 969         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
 970                                           IPA_CMD_ASS_START, 0);
 971         if (rc)
 972                 dev_warn(&card->gdev->dev,
 973                         "Starting source MAC-address support for %s failed\n",
 974                         QETH_CARD_IFNAME(card));
 975         return rc;
 976 }
 977
 978 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
 979 {
 980         int rc = 0;
 981
 982         QETH_CARD_TEXT(card, 3, "strtvlan");
 983
 984         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
 985                 dev_info(&card->gdev->dev,
 986                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
 987                 return -EOPNOTSUPP;
 988         }
 989
 990         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
 991                                           IPA_CMD_ASS_START, 0);
 992         if (rc) {
 993                 dev_warn(&card->gdev->dev,
 994                         "Starting VLAN support for %s failed\n",
 995                         QETH_CARD_IFNAME(card));
 996         } else {
 997                 dev_info(&card->gdev->dev, "VLAN enabled\n");
 998         }
 999         return rc;
1000 }
1001
1002 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1003 {
1004         int rc;
1005
1006         QETH_CARD_TEXT(card, 3, "stmcast");
1007
1008         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1009                 dev_info(&card->gdev->dev,
1010                         "Multicast not supported on %s\n",
1011                         QETH_CARD_IFNAME(card));
1012                 return -EOPNOTSUPP;
1013         }
1014
1015         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1016                                           IPA_CMD_ASS_START, 0);
1017         if (rc) {
1018                 dev_warn(&card->gdev->dev,
1019                         "Starting multicast support for %s failed\n",
1020                         QETH_CARD_IFNAME(card));
1021         } else {
1022                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1023                 card->dev->flags |= IFF_MULTICAST;
1024         }
1025         return rc;
1026 }
1027
1028 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1029 {
1030         int rc;
1031
1032         QETH_CARD_TEXT(card, 3, "softipv6");
1033
1034         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1035         if (rc) {
1036                 dev_err(&card->gdev->dev,
1037                         "Activating IPv6 support for %s failed\n",
1038                         QETH_CARD_IFNAME(card));
1039                 return rc;
1040         }
1041
1042         if (card->info.type == QETH_CARD_TYPE_IQD)
1043                 goto out;
1044
1045         rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1046                                           IPA_CMD_ASS_START, 3);
1047         if (rc) {
1048                 dev_err(&card->gdev->dev,
1049                         "Activating IPv6 support for %s failed\n",
1050                         QETH_CARD_IFNAME(card));
1051                 return rc;
1052         }
1053         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1054                                                IPA_CMD_ASS_START);
1055         if (rc) {
1056                 dev_err(&card->gdev->dev,
1057                         "Activating IPv6 support for %s failed\n",
1058                          QETH_CARD_IFNAME(card));
1059                 return rc;
1060         }
1061         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1062                                                IPA_CMD_ASS_START);
1063         if (rc) {
1064                 dev_warn(&card->gdev->dev,
1065                         "Enabling the passthrough mode for %s failed\n",
1066                         QETH_CARD_IFNAME(card));
1067                 return rc;
1068         }
1069 out:
1070         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1071         return 0;
1072 }
1073
1074 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1075 {
1076         QETH_CARD_TEXT(card, 3, "strtipv6");
1077
1078         if (!qeth_is_supported(card, IPA_IPV6)) {
1079                 dev_info(&card->gdev->dev,
1080                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1081                 return 0;
1082         }
1083         return qeth_l3_softsetup_ipv6(card);
1084 }
1085
1086 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1087 {
1088         int rc;
1089
1090         QETH_CARD_TEXT(card, 3, "stbrdcst");
1091         card->info.broadcast_capable = 0;
1092         if (!qeth_is_supported(card, IPA_FILTERING)) {
1093                 dev_info(&card->gdev->dev,
1094                         "Broadcast not supported on %s\n",
1095                         QETH_CARD_IFNAME(card));
1096                 rc = -EOPNOTSUPP;
1097                 goto out;
1098         }
1099         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1100                                           IPA_CMD_ASS_START, 0);
1101         if (rc) {
1102                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1103                         "%s failed\n", QETH_CARD_IFNAME(card));
1104                 goto out;
1105         }
1106
1107         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1108                                           IPA_CMD_ASS_CONFIGURE, 1);
1109         if (rc) {
1110                 dev_warn(&card->gdev->dev,
1111                         "Setting up broadcast filtering for %s failed\n",
1112                         QETH_CARD_IFNAME(card));
1113                 goto out;
1114         }
1115         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1116         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1117         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1118                                           IPA_CMD_ASS_ENABLE, 1);
1119         if (rc) {
1120                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1121                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1122                 goto out;
1123         }
1124         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1125 out:
1126         if (card->info.broadcast_capable)
1127                 card->dev->flags |= IFF_BROADCAST;
1128         else
1129                 card->dev->flags &= ~IFF_BROADCAST;
1130         return rc;
1131 }
1132
1133 static int qeth_l3_start_ipassists(struct qeth_card *card)
1134 {
1135         QETH_CARD_TEXT(card, 3, "strtipas");
1136
1137         if (qeth_set_access_ctrl_online(card, 0))
1138                 return -EIO;
1139         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1140         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1141         qeth_l3_start_ipa_vlan(card);           /* go on*/
1142         qeth_l3_start_ipa_multicast(card);              /* go on*/
1143         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1144         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1145         return 0;
1146 }
1147
1148 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1149                 struct qeth_reply *reply, unsigned long data)
1150 {
1151         struct qeth_ipa_cmd *cmd;
1152
1153         cmd = (struct qeth_ipa_cmd *) data;
1154         if (cmd->hdr.return_code == 0)
1155                 ether_addr_copy(card->dev->dev_addr,
1156                                 cmd->data.create_destroy_addr.unique_id);
1157         else
1158                 eth_random_addr(card->dev->dev_addr);
1159
1160         return 0;
1161 }
1162
1163 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1164 {
1165         int rc = 0;
1166         struct qeth_cmd_buffer *iob;
1167         struct qeth_ipa_cmd *cmd;
1168
1169         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1170
1171         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1172                                      QETH_PROT_IPV6);
1173         if (!iob)
1174                 return -ENOMEM;
1175         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1176         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1177                         card->info.unique_id;
1178
1179         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1180                                 NULL);
1181         return rc;
1182 }
1183
1184 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1185                 struct qeth_reply *reply, unsigned long data)
1186 {
1187         struct qeth_ipa_cmd *cmd;
1188
1189         cmd = (struct qeth_ipa_cmd *) data;
1190         if (cmd->hdr.return_code == 0)
1191                 card->info.unique_id = *((__u16 *)
1192                                 &cmd->data.create_destroy_addr.unique_id[6]);
1193         else {
1194                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1195                                         UNIQUE_ID_NOT_BY_CARD;
1196                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1197                         "generate a unique ID\n");
1198         }
1199         return 0;
1200 }
1201
1202 static int qeth_l3_get_unique_id(struct qeth_card *card)
1203 {
1204         int rc = 0;
1205         struct qeth_cmd_buffer *iob;
1206         struct qeth_ipa_cmd *cmd;
1207
1208         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1209
1210         if (!qeth_is_supported(card, IPA_IPV6)) {
1211                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1212                                         UNIQUE_ID_NOT_BY_CARD;
1213                 return 0;
1214         }
1215
1216         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1217                                      QETH_PROT_IPV6);
1218         if (!iob)
1219                 return -ENOMEM;
1220         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1221         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1222                         card->info.unique_id;
1223
1224         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1225         return rc;
1226 }
1227
1228 static int
1229 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1230                             unsigned long data)
1231 {
1232         struct qeth_ipa_cmd        *cmd;
1233         __u16 rc;
1234
1235         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1236
1237         cmd = (struct qeth_ipa_cmd *)data;
1238         rc = cmd->hdr.return_code;
1239         if (rc)
1240                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1241         switch (cmd->data.diagass.action) {
1242         case QETH_DIAGS_CMD_TRACE_QUERY:
1243                 break;
1244         case QETH_DIAGS_CMD_TRACE_DISABLE:
1245                 switch (rc) {
1246                 case 0:
1247                 case IPA_RC_INVALID_SUBCMD:
1248                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1249                         dev_info(&card->gdev->dev, "The HiperSockets network "
1250                                 "traffic analyzer is deactivated\n");
1251                         break;
1252                 default:
1253                         break;
1254                 }
1255                 break;
1256         case QETH_DIAGS_CMD_TRACE_ENABLE:
1257                 switch (rc) {
1258                 case 0:
1259                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1260                         dev_info(&card->gdev->dev, "The HiperSockets network "
1261                                 "traffic analyzer is activated\n");
1262                         break;
1263                 case IPA_RC_HARDWARE_AUTH_ERROR:
1264                         dev_warn(&card->gdev->dev, "The device is not "
1265                                 "authorized to run as a HiperSockets network "
1266                                 "traffic analyzer\n");
1267                         break;
1268                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1269                         dev_warn(&card->gdev->dev, "A HiperSockets "
1270                                 "network traffic analyzer is already "
1271                                 "active in the HiperSockets LAN\n");
1272                         break;
1273                 default:
1274                         break;
1275                 }
1276                 break;
1277         default:
1278                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1279                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1280         }
1281
1282         return 0;
1283 }
1284
1285 static int
1286 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1287 {
1288         struct qeth_cmd_buffer *iob;
1289         struct qeth_ipa_cmd    *cmd;
1290
1291         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1292
1293         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1294         if (!iob)
1295                 return -ENOMEM;
1296         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1297         cmd->data.diagass.subcmd_len = 16;
1298         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1299         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1300         cmd->data.diagass.action = diags_cmd;
1301         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1302 }
1303
1304 static void
1305 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1306 {
1307         struct ip_mc_list *im4;
1308         struct qeth_ipaddr *tmp, *ipm;
1309
1310         QETH_CARD_TEXT(card, 4, "addmc");
1311
1312         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1313         if (!tmp)
1314                 return;
1315
1316         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1317              im4 = rcu_dereference(im4->next_rcu)) {
1318                 ip_eth_mc_map(im4->multiaddr, tmp->mac);
1319                 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1320                 tmp->is_multicast = 1;
1321
1322                 ipm = qeth_l3_ip_from_hash(card, tmp);
1323                 if (ipm) {
1324                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1325                 } else {
1326                         ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1327                         if (!ipm)
1328                                 continue;
1329                         ether_addr_copy(ipm->mac, tmp->mac);
1330                         ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1331                         ipm->is_multicast = 1;
1332                         ipm->disp_flag = QETH_DISP_ADDR_ADD;
1333                         hash_add(card->ip_mc_htable,
1334                                         &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1335                 }
1336         }
1337
1338         kfree(tmp);
1339 }
1340
1341 /* called with rcu_read_lock */
1342 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1343 {
1344         struct in_device *in_dev;
1345         u16 vid;
1346
1347         QETH_CARD_TEXT(card, 4, "addmcvl");
1348
1349         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1350                 return;
1351
1352         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1353                 struct net_device *netdev;
1354
1355                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1356                                               vid);
1357                 if (netdev == NULL ||
1358                     !(netdev->flags & IFF_UP))
1359                         continue;
1360                 in_dev = __in_dev_get_rcu(netdev);
1361                 if (!in_dev)
1362                         continue;
1363                 qeth_l3_add_mc_to_hash(card, in_dev);
1364         }
1365 }
1366
1367 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1368 {
1369         struct in_device *in4_dev;
1370
1371         QETH_CARD_TEXT(card, 4, "chkmcv4");
1372
1373         rcu_read_lock();
1374         in4_dev = __in_dev_get_rcu(card->dev);
1375         if (in4_dev == NULL)
1376                 goto unlock;
1377         qeth_l3_add_mc_to_hash(card, in4_dev);
1378         qeth_l3_add_vlan_mc(card);
1379 unlock:
1380         rcu_read_unlock();
1381 }
1382
1383 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card,
1384                                     struct inet6_dev *in6_dev)
1385 {
1386         struct qeth_ipaddr *ipm;
1387         struct ifmcaddr6 *im6;
1388         struct qeth_ipaddr *tmp;
1389
1390         QETH_CARD_TEXT(card, 4, "addmc6");
1391
1392         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1393         if (!tmp)
1394                 return;
1395
1396         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1397                 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac);
1398                 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1399                        sizeof(struct in6_addr));
1400                 tmp->is_multicast = 1;
1401
1402                 ipm = qeth_l3_ip_from_hash(card, tmp);
1403                 if (ipm) {
1404                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1405                         continue;
1406                 }
1407
1408                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1409                 if (!ipm)
1410                         continue;
1411
1412                 ether_addr_copy(ipm->mac, tmp->mac);
1413                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1414                        sizeof(struct in6_addr));
1415                 ipm->is_multicast = 1;
1416                 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1417                 hash_add(card->ip_mc_htable,
1418                                 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1419
1420         }
1421         kfree(tmp);
1422 }
1423
1424 /* called with rcu_read_lock */
1425 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1426 {
1427         struct inet6_dev *in_dev;
1428         u16 vid;
1429
1430         QETH_CARD_TEXT(card, 4, "admc6vl");
1431
1432         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1433                 return;
1434
1435         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1436                 struct net_device *netdev;
1437
1438                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1439                                               vid);
1440                 if (netdev == NULL ||
1441                     !(netdev->flags & IFF_UP))
1442                         continue;
1443                 in_dev = in6_dev_get(netdev);
1444                 if (!in_dev)
1445                         continue;
1446                 read_lock_bh(&in_dev->lock);
1447                 qeth_l3_add_mc6_to_hash(card, in_dev);
1448                 read_unlock_bh(&in_dev->lock);
1449                 in6_dev_put(in_dev);
1450         }
1451 }
1452
1453 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1454 {
1455         struct inet6_dev *in6_dev;
1456
1457         QETH_CARD_TEXT(card, 4, "chkmcv6");
1458
1459         if (!qeth_is_supported(card, IPA_IPV6))
1460                 return ;
1461         in6_dev = in6_dev_get(card->dev);
1462         if (!in6_dev)
1463                 return;
1464
1465         rcu_read_lock();
1466         read_lock_bh(&in6_dev->lock);
1467         qeth_l3_add_mc6_to_hash(card, in6_dev);
1468         qeth_l3_add_vlan_mc6(card);
1469         read_unlock_bh(&in6_dev->lock);
1470         rcu_read_unlock();
1471         in6_dev_put(in6_dev);
1472 }
1473
1474 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1475                         unsigned short vid)
1476 {
1477         struct in_device *in_dev;
1478         struct in_ifaddr *ifa;
1479         struct qeth_ipaddr *addr;
1480         struct net_device *netdev;
1481
1482         QETH_CARD_TEXT(card, 4, "frvaddr4");
1483
1484         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1485         if (!netdev)
1486                 return;
1487         in_dev = in_dev_get(netdev);
1488         if (!in_dev)
1489                 return;
1490
1491         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1492         if (!addr)
1493                 goto out;
1494
1495         spin_lock_bh(&card->ip_lock);
1496
1497         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1498                 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address);
1499                 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask);
1500                 addr->type = QETH_IP_TYPE_NORMAL;
1501                 qeth_l3_delete_ip(card, addr);
1502         }
1503
1504         spin_unlock_bh(&card->ip_lock);
1505
1506         kfree(addr);
1507 out:
1508         in_dev_put(in_dev);
1509 }
1510
1511 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1512                                          unsigned short vid)
1513 {
1514         struct inet6_dev *in6_dev;
1515         struct inet6_ifaddr *ifa;
1516         struct qeth_ipaddr *addr;
1517         struct net_device *netdev;
1518
1519         QETH_CARD_TEXT(card, 4, "frvaddr6");
1520
1521         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1522         if (!netdev)
1523                 return;
1524
1525         in6_dev = in6_dev_get(netdev);
1526         if (!in6_dev)
1527                 return;
1528
1529         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1530         if (!addr)
1531                 goto out;
1532
1533         spin_lock_bh(&card->ip_lock);
1534
1535         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1536                 memcpy(&addr->u.a6.addr, &ifa->addr,
1537                        sizeof(struct in6_addr));
1538                 addr->u.a6.pfxlen = ifa->prefix_len;
1539                 addr->type = QETH_IP_TYPE_NORMAL;
1540                 qeth_l3_delete_ip(card, addr);
1541         }
1542
1543         spin_unlock_bh(&card->ip_lock);
1544
1545         kfree(addr);
1546 out:
1547         in6_dev_put(in6_dev);
1548 }
1549
1550 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1551                         unsigned short vid)
1552 {
1553         rcu_read_lock();
1554         qeth_l3_free_vlan_addresses4(card, vid);
1555         qeth_l3_free_vlan_addresses6(card, vid);
1556         rcu_read_unlock();
1557 }
1558
1559 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1560                                    __be16 proto, u16 vid)
1561 {
1562         struct qeth_card *card = dev->ml_priv;
1563
1564         set_bit(vid, card->active_vlans);
1565         return 0;
1566 }
1567
1568 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1569                                     __be16 proto, u16 vid)
1570 {
1571         struct qeth_card *card = dev->ml_priv;
1572
1573         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1574
1575         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1576                 QETH_CARD_TEXT(card, 3, "kidREC");
1577                 return 0;
1578         }
1579         /* unregister IP addresses of vlan device */
1580         qeth_l3_free_vlan_addresses(card, vid);
1581         clear_bit(vid, card->active_vlans);
1582         qeth_l3_set_rx_mode(dev);
1583         return 0;
1584 }
1585
1586 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1587                                 struct qeth_hdr *hdr)
1588 {
1589         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1590                 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1591                                                                  ETH_P_IP;
1592                 unsigned char tg_addr[ETH_ALEN];
1593
1594                 skb_reset_network_header(skb);
1595                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1596                 case QETH_CAST_MULTICAST:
1597                         if (prot == ETH_P_IP)
1598                                 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
1599                         else
1600                                 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1601
1602                         card->stats.multicast++;
1603                         skb->pkt_type = PACKET_MULTICAST;
1604                         break;
1605                 case QETH_CAST_BROADCAST:
1606                         ether_addr_copy(tg_addr, card->dev->broadcast);
1607                         card->stats.multicast++;
1608                         skb->pkt_type = PACKET_BROADCAST;
1609                         break;
1610                 case QETH_CAST_UNICAST:
1611                 case QETH_CAST_ANYCAST:
1612                 case QETH_CAST_NOCAST:
1613                 default:
1614                         if (card->options.sniffer)
1615                                 skb->pkt_type = PACKET_OTHERHOST;
1616                         else
1617                                 skb->pkt_type = PACKET_HOST;
1618                         ether_addr_copy(tg_addr, card->dev->dev_addr);
1619                 }
1620                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1621                         card->dev->header_ops->create(skb, card->dev, prot,
1622                                 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
1623                                 card->dev->addr_len);
1624                 else
1625                         card->dev->header_ops->create(skb, card->dev, prot,
1626                                 tg_addr, "FAKELL", card->dev->addr_len);
1627         }
1628
1629         skb->protocol = eth_type_trans(skb, card->dev);
1630
1631         /* copy VLAN tag from hdr into skb */
1632         if (!card->options.sniffer &&
1633             (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1634                                       QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1635                 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1636                                 hdr->hdr.l3.vlan_id :
1637                                 hdr->hdr.l3.next_hop.rx.vlan_id;
1638                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
1639         }
1640
1641         if (card->dev->features & NETIF_F_RXCSUM) {
1642                 if ((hdr->hdr.l3.ext_flags &
1643                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1644                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1645                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1646                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1647                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1648                 else
1649                         skb->ip_summed = CHECKSUM_NONE;
1650         } else
1651                 skb->ip_summed = CHECKSUM_NONE;
1652 }
1653
1654 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1655                                 int budget, int *done)
1656 {
1657         int work_done = 0;
1658         struct sk_buff *skb;
1659         struct qeth_hdr *hdr;
1660         unsigned int len;
1661         __u16 magic;
1662
1663         *done = 0;
1664         WARN_ON_ONCE(!budget);
1665         while (budget) {
1666                 skb = qeth_core_get_next_skb(card,
1667                         &card->qdio.in_q->bufs[card->rx.b_index],
1668                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1669                 if (!skb) {
1670                         *done = 1;
1671                         break;
1672                 }
1673                 skb->dev = card->dev;
1674                 switch (hdr->hdr.l3.id) {
1675                 case QETH_HEADER_TYPE_LAYER3:
1676                         magic = *(__u16 *)skb->data;
1677                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1678                             (magic == ETH_P_AF_IUCV)) {
1679                                 skb->protocol = cpu_to_be16(ETH_P_AF_IUCV);
1680                                 skb->pkt_type = PACKET_HOST;
1681                                 skb->mac_header = NET_SKB_PAD;
1682                                 skb->dev = card->dev;
1683                                 len = skb->len;
1684                                 card->dev->header_ops->create(skb, card->dev, 0,
1685                                         card->dev->dev_addr, "FAKELL",
1686                                         card->dev->addr_len);
1687                                 netif_receive_skb(skb);
1688                         } else {
1689                                 qeth_l3_rebuild_skb(card, skb, hdr);
1690                                 len = skb->len;
1691                                 napi_gro_receive(&card->napi, skb);
1692                         }
1693                         break;
1694                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1695                         skb->pkt_type = PACKET_HOST;
1696                         skb->protocol = eth_type_trans(skb, skb->dev);
1697                         len = skb->len;
1698                         netif_receive_skb(skb);
1699                         break;
1700                 default:
1701                         dev_kfree_skb_any(skb);
1702                         QETH_CARD_TEXT(card, 3, "inbunkno");
1703                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1704                         continue;
1705                 }
1706                 work_done++;
1707                 budget--;
1708                 card->stats.rx_packets++;
1709                 card->stats.rx_bytes += len;
1710         }
1711         return work_done;
1712 }
1713
1714 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1715                         struct qeth_card *card)
1716 {
1717         int rc = 0;
1718         u16 vid;
1719
1720         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1721                 struct net_device *netdev;
1722
1723                 rcu_read_lock();
1724                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1725                                               vid);
1726                 rcu_read_unlock();
1727                 if (netdev == dev) {
1728                         rc = QETH_VLAN_CARD;
1729                         break;
1730                 }
1731         }
1732
1733         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
1734                 return 0;
1735
1736         return rc;
1737 }
1738
1739 static int qeth_l3_verify_dev(struct net_device *dev)
1740 {
1741         struct qeth_card *card;
1742         int rc = 0;
1743         unsigned long flags;
1744
1745         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
1746         list_for_each_entry(card, &qeth_core_card_list.list, list) {
1747                 if (card->dev == dev) {
1748                         rc = QETH_REAL_CARD;
1749                         break;
1750                 }
1751                 rc = qeth_l3_verify_vlan_dev(dev, card);
1752                 if (rc)
1753                         break;
1754         }
1755         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
1756
1757         return rc;
1758 }
1759
1760 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
1761 {
1762         struct qeth_card *card = NULL;
1763         int rc;
1764
1765         rc = qeth_l3_verify_dev(dev);
1766         if (rc == QETH_REAL_CARD)
1767                 card = dev->ml_priv;
1768         else if (rc == QETH_VLAN_CARD)
1769                 card = vlan_dev_real_dev(dev)->ml_priv;
1770         if (card && card->options.layer2)
1771                 card = NULL;
1772         if (card)
1773                 QETH_CARD_TEXT_(card, 4, "%d", rc);
1774         return card ;
1775 }
1776
1777 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1778 {
1779         QETH_DBF_TEXT(SETUP, 2, "stopcard");
1780         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1781
1782         qeth_set_allowed_threads(card, 0, 1);
1783         if (card->options.sniffer &&
1784             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1785                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1786         if (card->read.state == CH_STATE_UP &&
1787             card->write.state == CH_STATE_UP &&
1788             (card->state == CARD_STATE_UP)) {
1789                 if (recovery_mode)
1790                         qeth_l3_stop(card->dev);
1791                 else {
1792                         rtnl_lock();
1793                         dev_close(card->dev);
1794                         rtnl_unlock();
1795                 }
1796                 card->state = CARD_STATE_SOFTSETUP;
1797         }
1798         if (card->state == CARD_STATE_SOFTSETUP) {
1799                 qeth_l3_clear_ip_htable(card, 1);
1800                 qeth_clear_ipacmd_list(card);
1801                 card->state = CARD_STATE_HARDSETUP;
1802         }
1803         if (card->state == CARD_STATE_HARDSETUP) {
1804                 qeth_qdio_clear_card(card, 0);
1805                 qeth_clear_qdio_buffers(card);
1806                 qeth_clear_working_pool_list(card);
1807                 card->state = CARD_STATE_DOWN;
1808         }
1809         if (card->state == CARD_STATE_DOWN) {
1810                 qeth_clear_cmd_buffers(&card->read);
1811                 qeth_clear_cmd_buffers(&card->write);
1812         }
1813 }
1814
1815 /*
1816  * test for and Switch promiscuous mode (on or off)
1817  *  either for guestlan or HiperSocket Sniffer
1818  */
1819 static void
1820 qeth_l3_handle_promisc_mode(struct qeth_card *card)
1821 {
1822         struct net_device *dev = card->dev;
1823
1824         if (((dev->flags & IFF_PROMISC) &&
1825              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1826             (!(dev->flags & IFF_PROMISC) &&
1827              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1828                 return;
1829
1830         if (card->info.guestlan) {              /* Guestlan trace */
1831                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1832                         qeth_setadp_promisc_mode(card);
1833         } else if (card->options.sniffer &&     /* HiperSockets trace */
1834                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1835                 if (dev->flags & IFF_PROMISC) {
1836                         QETH_CARD_TEXT(card, 3, "+promisc");
1837                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1838                 } else {
1839                         QETH_CARD_TEXT(card, 3, "-promisc");
1840                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1841                 }
1842         }
1843 }
1844
1845 static void qeth_l3_set_rx_mode(struct net_device *dev)
1846 {
1847         struct qeth_card *card = dev->ml_priv;
1848         struct qeth_ipaddr *addr;
1849         struct hlist_node *tmp;
1850         int i, rc;
1851
1852         QETH_CARD_TEXT(card, 3, "setmulti");
1853         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
1854             (card->state != CARD_STATE_UP))
1855                 return;
1856         if (!card->options.sniffer) {
1857                 spin_lock_bh(&card->mclock);
1858
1859                 qeth_l3_add_multicast_ipv4(card);
1860                 qeth_l3_add_multicast_ipv6(card);
1861
1862                 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1863                         switch (addr->disp_flag) {
1864                         case QETH_DISP_ADDR_DELETE:
1865                                 rc = qeth_l3_deregister_addr_entry(card, addr);
1866                                 if (!rc || rc == IPA_RC_MC_ADDR_NOT_FOUND) {
1867                                         hash_del(&addr->hnode);
1868                                         kfree(addr);
1869                                 }
1870                                 break;
1871                         case QETH_DISP_ADDR_ADD:
1872                                 rc = qeth_l3_register_addr_entry(card, addr);
1873                                 if (rc && rc != IPA_RC_LAN_OFFLINE) {
1874                                         hash_del(&addr->hnode);
1875                                         kfree(addr);
1876                                         break;
1877                                 }
1878                                 addr->ref_counter = 1;
1879                                 /* fall through */
1880                         default:
1881                                 /* for next call to set_rx_mode(): */
1882                                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1883                         }
1884                 }
1885
1886                 spin_unlock_bh(&card->mclock);
1887
1888                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1889                         return;
1890         }
1891         qeth_l3_handle_promisc_mode(card);
1892 }
1893
1894 static const char *qeth_l3_arp_get_error_cause(int *rc)
1895 {
1896         switch (*rc) {
1897         case QETH_IPA_ARP_RC_FAILED:
1898                 *rc = -EIO;
1899                 return "operation failed";
1900         case QETH_IPA_ARP_RC_NOTSUPP:
1901                 *rc = -EOPNOTSUPP;
1902                 return "operation not supported";
1903         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1904                 *rc = -EINVAL;
1905                 return "argument out of range";
1906         case QETH_IPA_ARP_RC_Q_NOTSUPP:
1907                 *rc = -EOPNOTSUPP;
1908                 return "query operation not supported";
1909         case QETH_IPA_ARP_RC_Q_NO_DATA:
1910                 *rc = -ENOENT;
1911                 return "no query data available";
1912         default:
1913                 return "unknown error";
1914         }
1915 }
1916
1917 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1918 {
1919         int tmp;
1920         int rc;
1921
1922         QETH_CARD_TEXT(card, 3, "arpstnoe");
1923
1924         /*
1925          * currently GuestLAN only supports the ARP assist function
1926          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1927          * thus we say EOPNOTSUPP for this ARP function
1928          */
1929         if (card->info.guestlan)
1930                 return -EOPNOTSUPP;
1931         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1932                 return -EOPNOTSUPP;
1933         }
1934         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1935                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1936                                           no_entries);
1937         if (rc) {
1938                 tmp = rc;
1939                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
1940                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
1941                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1942         }
1943         return rc;
1944 }
1945
1946 static __u32 get_arp_entry_size(struct qeth_card *card,
1947                         struct qeth_arp_query_data *qdata,
1948                         struct qeth_arp_entrytype *type, __u8 strip_entries)
1949 {
1950         __u32 rc;
1951         __u8 is_hsi;
1952
1953         is_hsi = qdata->reply_bits == 5;
1954         if (type->ip == QETHARP_IP_ADDR_V4) {
1955                 QETH_CARD_TEXT(card, 4, "arpev4");
1956                 if (strip_entries) {
1957                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1958                                 sizeof(struct qeth_arp_qi_entry7_short);
1959                 } else {
1960                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1961                                 sizeof(struct qeth_arp_qi_entry7);
1962                 }
1963         } else if (type->ip == QETHARP_IP_ADDR_V6) {
1964                 QETH_CARD_TEXT(card, 4, "arpev6");
1965                 if (strip_entries) {
1966                         rc = is_hsi ?
1967                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1968                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1969                 } else {
1970                         rc = is_hsi ?
1971                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1972                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
1973                 }
1974         } else {
1975                 QETH_CARD_TEXT(card, 4, "arpinv");
1976                 rc = 0;
1977         }
1978
1979         return rc;
1980 }
1981
1982 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1983 {
1984         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1985                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1986 }
1987
1988 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1989                 struct qeth_reply *reply, unsigned long data)
1990 {
1991         struct qeth_ipa_cmd *cmd;
1992         struct qeth_arp_query_data *qdata;
1993         struct qeth_arp_query_info *qinfo;
1994         int i;
1995         int e;
1996         int entrybytes_done;
1997         int stripped_bytes;
1998         __u8 do_strip_entries;
1999
2000         QETH_CARD_TEXT(card, 3, "arpquecb");
2001
2002         qinfo = (struct qeth_arp_query_info *) reply->param;
2003         cmd = (struct qeth_ipa_cmd *) data;
2004         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2005         if (cmd->hdr.return_code) {
2006                 QETH_CARD_TEXT(card, 4, "arpcberr");
2007                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2008                 return 0;
2009         }
2010         if (cmd->data.setassparms.hdr.return_code) {
2011                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2012                 QETH_CARD_TEXT(card, 4, "setaperr");
2013                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2014                 return 0;
2015         }
2016         qdata = &cmd->data.setassparms.data.query_arp;
2017         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2018
2019         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2020         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2021         entrybytes_done = 0;
2022         for (e = 0; e < qdata->no_entries; ++e) {
2023                 char *cur_entry;
2024                 __u32 esize;
2025                 struct qeth_arp_entrytype *etype;
2026
2027                 cur_entry = &qdata->data + entrybytes_done;
2028                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2029                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2030                         QETH_CARD_TEXT(card, 4, "pmis");
2031                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2032                         break;
2033                 }
2034                 esize = get_arp_entry_size(card, qdata, etype,
2035                         do_strip_entries);
2036                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2037                 if (!esize)
2038                         break;
2039
2040                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2041                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2042                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2043                         goto out_error;
2044                 }
2045
2046                 memcpy(qinfo->udata + qinfo->udata_offset,
2047                         &qdata->data + entrybytes_done + stripped_bytes,
2048                         esize);
2049                 entrybytes_done += esize + stripped_bytes;
2050                 qinfo->udata_offset += esize;
2051                 ++qinfo->no_entries;
2052         }
2053         /* check if all replies received ... */
2054         if (cmd->data.setassparms.hdr.seq_no <
2055             cmd->data.setassparms.hdr.number_of_replies)
2056                 return 1;
2057         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2058         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2059         /* keep STRIP_ENTRIES flag so the user program can distinguish
2060          * stripped entries from normal ones */
2061         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2062                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2063         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2064         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2065         return 0;
2066 out_error:
2067         i = 0;
2068         memcpy(qinfo->udata, &i, 4);
2069         return 0;
2070 }
2071
2072 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2073                 struct qeth_cmd_buffer *iob, int len,
2074                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2075                         unsigned long),
2076                 void *reply_param)
2077 {
2078         QETH_CARD_TEXT(card, 4, "sendarp");
2079
2080         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2081         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2082                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2083         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2084                                       reply_cb, reply_param);
2085 }
2086
2087 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2088         enum qeth_prot_versions prot,
2089         struct qeth_arp_query_info *qinfo)
2090 {
2091         struct qeth_cmd_buffer *iob;
2092         struct qeth_ipa_cmd *cmd;
2093         int tmp;
2094         int rc;
2095
2096         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2097
2098         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2099                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2100                                        sizeof(struct qeth_arp_query_data)
2101                                                 - sizeof(char),
2102                                        prot);
2103         if (!iob)
2104                 return -ENOMEM;
2105         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2106         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2107         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2108         cmd->data.setassparms.data.query_arp.no_entries = 0;
2109         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2110                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2111                            qeth_l3_arp_query_cb, (void *)qinfo);
2112         if (rc) {
2113                 tmp = rc;
2114                 QETH_DBF_MESSAGE(2,
2115                         "Error while querying ARP cache on %s: %s "
2116                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2117                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2118         }
2119
2120         return rc;
2121 }
2122
2123 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2124 {
2125         struct qeth_arp_query_info qinfo = {0, };
2126         int rc;
2127
2128         QETH_CARD_TEXT(card, 3, "arpquery");
2129
2130         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2131                                IPA_ARP_PROCESSING)) {
2132                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2133                 rc = -EOPNOTSUPP;
2134                 goto out;
2135         }
2136         /* get size of userspace buffer and mask_bits -> 6 bytes */
2137         if (copy_from_user(&qinfo, udata, 6)) {
2138                 rc = -EFAULT;
2139                 goto out;
2140         }
2141         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2142         if (!qinfo.udata) {
2143                 rc = -ENOMEM;
2144                 goto out;
2145         }
2146         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2147         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2148         if (rc) {
2149                 if (copy_to_user(udata, qinfo.udata, 4))
2150                         rc = -EFAULT;
2151                 goto free_and_out;
2152         }
2153         if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2154                 /* fails in case of GuestLAN QDIO mode */
2155                 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
2156         }
2157         if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2158                 QETH_CARD_TEXT(card, 4, "qactf");
2159                 rc = -EFAULT;
2160                 goto free_and_out;
2161         }
2162         QETH_CARD_TEXT(card, 4, "qacts");
2163
2164 free_and_out:
2165         kfree(qinfo.udata);
2166 out:
2167         return rc;
2168 }
2169
2170 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2171                                 struct qeth_arp_cache_entry *entry)
2172 {
2173         struct qeth_cmd_buffer *iob;
2174         char buf[16];
2175         int tmp;
2176         int rc;
2177
2178         QETH_CARD_TEXT(card, 3, "arpadent");
2179
2180         /*
2181          * currently GuestLAN only supports the ARP assist function
2182          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2183          * thus we say EOPNOTSUPP for this ARP function
2184          */
2185         if (card->info.guestlan)
2186                 return -EOPNOTSUPP;
2187         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2188                 return -EOPNOTSUPP;
2189         }
2190
2191         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2192                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2193                                        sizeof(struct qeth_arp_cache_entry),
2194                                        QETH_PROT_IPV4);
2195         if (!iob)
2196                 return -ENOMEM;
2197         rc = qeth_send_setassparms(card, iob,
2198                                    sizeof(struct qeth_arp_cache_entry),
2199                                    (unsigned long) entry,
2200                                    qeth_setassparms_cb, NULL);
2201         if (rc) {
2202                 tmp = rc;
2203                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2204                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2205                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2206                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2207         }
2208         return rc;
2209 }
2210
2211 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2212                                 struct qeth_arp_cache_entry *entry)
2213 {
2214         struct qeth_cmd_buffer *iob;
2215         char buf[16] = {0, };
2216         int tmp;
2217         int rc;
2218
2219         QETH_CARD_TEXT(card, 3, "arprment");
2220
2221         /*
2222          * currently GuestLAN only supports the ARP assist function
2223          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2224          * thus we say EOPNOTSUPP for this ARP function
2225          */
2226         if (card->info.guestlan)
2227                 return -EOPNOTSUPP;
2228         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2229                 return -EOPNOTSUPP;
2230         }
2231         memcpy(buf, entry, 12);
2232         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2233                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2234                                        12,
2235                                        QETH_PROT_IPV4);
2236         if (!iob)
2237                 return -ENOMEM;
2238         rc = qeth_send_setassparms(card, iob,
2239                                    12, (unsigned long)buf,
2240                                    qeth_setassparms_cb, NULL);
2241         if (rc) {
2242                 tmp = rc;
2243                 memset(buf, 0, 16);
2244                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2245                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2246                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2247                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2248         }
2249         return rc;
2250 }
2251
2252 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2253 {
2254         int rc;
2255         int tmp;
2256
2257         QETH_CARD_TEXT(card, 3, "arpflush");
2258
2259         /*
2260          * currently GuestLAN only supports the ARP assist function
2261          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2262          * thus we say EOPNOTSUPP for this ARP function
2263         */
2264         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2265                 return -EOPNOTSUPP;
2266         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2267                 return -EOPNOTSUPP;
2268         }
2269         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2270                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2271         if (rc) {
2272                 tmp = rc;
2273                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2274                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2275                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2276         }
2277         return rc;
2278 }
2279
2280 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2281 {
2282         struct qeth_card *card = dev->ml_priv;
2283         struct qeth_arp_cache_entry arp_entry;
2284         int rc = 0;
2285
2286         switch (cmd) {
2287         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2288                 if (!capable(CAP_NET_ADMIN)) {
2289                         rc = -EPERM;
2290                         break;
2291                 }
2292                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2293                 break;
2294         case SIOC_QETH_ARP_QUERY_INFO:
2295                 if (!capable(CAP_NET_ADMIN)) {
2296                         rc = -EPERM;
2297                         break;
2298                 }
2299                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2300                 break;
2301         case SIOC_QETH_ARP_ADD_ENTRY:
2302                 if (!capable(CAP_NET_ADMIN)) {
2303                         rc = -EPERM;
2304                         break;
2305                 }
2306                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2307                                    sizeof(struct qeth_arp_cache_entry)))
2308                         rc = -EFAULT;
2309                 else
2310                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2311                 break;
2312         case SIOC_QETH_ARP_REMOVE_ENTRY:
2313                 if (!capable(CAP_NET_ADMIN)) {
2314                         rc = -EPERM;
2315                         break;
2316                 }
2317                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2318                                    sizeof(struct qeth_arp_cache_entry)))
2319                         rc = -EFAULT;
2320                 else
2321                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2322                 break;
2323         case SIOC_QETH_ARP_FLUSH_CACHE:
2324                 if (!capable(CAP_NET_ADMIN)) {
2325                         rc = -EPERM;
2326                         break;
2327                 }
2328                 rc = qeth_l3_arp_flush_cache(card);
2329                 break;
2330         default:
2331                 rc = -EOPNOTSUPP;
2332         }
2333         return rc;
2334 }
2335
2336 static int qeth_l3_get_cast_type(struct sk_buff *skb)
2337 {
2338         struct neighbour *n = NULL;
2339         struct dst_entry *dst;
2340
2341         rcu_read_lock();
2342         dst = skb_dst(skb);
2343         if (dst)
2344                 n = dst_neigh_lookup_skb(dst, skb);
2345         if (n) {
2346                 int cast_type = n->type;
2347
2348                 rcu_read_unlock();
2349                 neigh_release(n);
2350                 if ((cast_type == RTN_BROADCAST) ||
2351                     (cast_type == RTN_MULTICAST) ||
2352                     (cast_type == RTN_ANYCAST))
2353                         return cast_type;
2354                 return RTN_UNSPEC;
2355         }
2356         rcu_read_unlock();
2357
2358         /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
2359         if (be16_to_cpu(skb->protocol) == ETH_P_IPV6)
2360                 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
2361                                 RTN_MULTICAST : RTN_UNSPEC;
2362         else if (be16_to_cpu(skb->protocol) == ETH_P_IP)
2363                 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
2364                                 RTN_MULTICAST : RTN_UNSPEC;
2365
2366         /* ... and MAC address */
2367         if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, skb->dev->broadcast))
2368                 return RTN_BROADCAST;
2369         if (is_multicast_ether_addr(eth_hdr(skb)->h_dest))
2370                 return RTN_MULTICAST;
2371
2372         /* default to unicast */
2373         return RTN_UNSPEC;
2374 }
2375
2376 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2377                 struct qeth_hdr *hdr, struct sk_buff *skb)
2378 {
2379         char daddr[16];
2380         struct af_iucv_trans_hdr *iucv_hdr;
2381
2382         memset(hdr, 0, sizeof(struct qeth_hdr));
2383         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2384         hdr->hdr.l3.ext_flags = 0;
2385         hdr->hdr.l3.length = skb->len - ETH_HLEN;
2386         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2387
2388         iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN);
2389         memset(daddr, 0, sizeof(daddr));
2390         daddr[0] = 0xfe;
2391         daddr[1] = 0x80;
2392         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2393         memcpy(hdr->hdr.l3.next_hop.ipv6_addr, daddr, 16);
2394 }
2395
2396 static u8 qeth_l3_cast_type_to_flag(int cast_type)
2397 {
2398         if (cast_type == RTN_MULTICAST)
2399                 return QETH_CAST_MULTICAST;
2400         if (cast_type == RTN_ANYCAST)
2401                 return QETH_CAST_ANYCAST;
2402         if (cast_type == RTN_BROADCAST)
2403                 return QETH_CAST_BROADCAST;
2404         return QETH_CAST_UNICAST;
2405 }
2406
2407 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2408                                 struct sk_buff *skb, int ipv, int cast_type)
2409 {
2410         memset(hdr, 0, sizeof(struct qeth_hdr));
2411         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2412         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2413
2414         /*
2415          * before we're going to overwrite this location with next hop ip.
2416          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2417          */
2418         if (skb_vlan_tag_present(skb)) {
2419                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2420                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2421                 else
2422                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2423                 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2424         }
2425
2426         /* OSA only: */
2427         if (!ipv) {
2428                 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU;
2429                 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
2430                                             skb->dev->broadcast))
2431                         hdr->hdr.l3.flags |= QETH_CAST_BROADCAST;
2432                 else
2433                         hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ?
2434                                 QETH_CAST_MULTICAST : QETH_CAST_UNICAST;
2435                 return;
2436         }
2437
2438         hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type);
2439         rcu_read_lock();
2440         if (ipv == 4) {
2441                 struct rtable *rt = skb_rtable(skb);
2442
2443                 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
2444                                 rt_nexthop(rt, ip_hdr(skb)->daddr) :
2445                                 ip_hdr(skb)->daddr;
2446         } else {
2447                 /* IPv6 */
2448                 const struct rt6_info *rt = skb_rt6_info(skb);
2449                 const struct in6_addr *next_hop;
2450
2451                 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
2452                         next_hop = &rt->rt6i_gateway;
2453                 else
2454                         next_hop = &ipv6_hdr(skb)->daddr;
2455                 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, next_hop, 16);
2456
2457                 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
2458                 if (card->info.type != QETH_CARD_TYPE_IQD)
2459                         hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
2460         }
2461         rcu_read_unlock();
2462 }
2463
2464 static void qeth_l3_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr,
2465                              struct sk_buff *skb)
2466 {
2467         struct iphdr *iph = ip_hdr(skb);
2468
2469         /* tcph->check contains already the pseudo hdr checksum
2470          * so just set the header flags
2471          */
2472         if (iph->protocol == IPPROTO_UDP)
2473                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2474         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2475                 QETH_HDR_EXT_CSUM_HDR_REQ;
2476         iph->check = 0;
2477         if (card->options.performance_stats)
2478                 card->perf_stats.tx_csum++;
2479 }
2480
2481 static void qeth_tso_fill_header(struct qeth_card *card,
2482                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2483 {
2484         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2485         struct tcphdr *tcph = tcp_hdr(skb);
2486         struct iphdr *iph = ip_hdr(skb);
2487         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2488
2489         /*fix header to TSO values ...*/
2490         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2491         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2492         /*set values which are fix for the first approach ...*/
2493         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2494         hdr->ext.imb_hdr_no  = 1;
2495         hdr->ext.hdr_type    = 1;
2496         hdr->ext.hdr_version = 1;
2497         hdr->ext.hdr_len     = 28;
2498         /*insert non-fix values */
2499         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2500         hdr->ext.dg_hdr_len = (__u16)(ip_hdrlen(skb) + tcp_hdrlen(skb));
2501         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2502                                        sizeof(struct qeth_hdr_tso));
2503         tcph->check = 0;
2504         if (be16_to_cpu(skb->protocol) == ETH_P_IPV6) {
2505                 ip6h->payload_len = 0;
2506                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2507                                                0, IPPROTO_TCP, 0);
2508         } else {
2509                 /*OSA want us to set these values ...*/
2510                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2511                                          0, IPPROTO_TCP, 0);
2512                 iph->tot_len = 0;
2513                 iph->check = 0;
2514         }
2515 }
2516
2517 /**
2518  * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2519  * @card:                          qeth card structure, to check max. elems.
2520  * @skb:                           SKB address
2521  * @extra_elems:                   extra elems needed, to check against max.
2522  *
2523  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2524  * skb data, including linear part and fragments, but excluding TCP header.
2525  * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2526  * Checks if the result plus extra_elems fits under the limit for the card.
2527  * Returns 0 if it does not.
2528  * Note: extra_elems is not included in the returned result.
2529  */
2530 static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2531                         struct sk_buff *skb, int extra_elems)
2532 {
2533         addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2534         int elements = qeth_get_elements_for_range(
2535                                 tcpdptr,
2536                                 (addr_t)skb->data + skb_headlen(skb)) +
2537                                 qeth_get_elements_for_frags(skb);
2538
2539         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2540                 QETH_DBF_MESSAGE(2,
2541         "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2542                                 elements + extra_elems, skb->len);
2543                 return 0;
2544         }
2545         return elements;
2546 }
2547
2548 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2549                                            struct net_device *dev)
2550 {
2551         int rc;
2552         __be16 *tag;
2553         struct qeth_hdr *hdr = NULL;
2554         int hdr_elements = 0;
2555         int elements;
2556         struct qeth_card *card = dev->ml_priv;
2557         struct sk_buff *new_skb = NULL;
2558         int ipv = qeth_get_ip_version(skb);
2559         int cast_type = qeth_l3_get_cast_type(skb);
2560         struct qeth_qdio_out_q *queue =
2561                 card->qdio.out_qs[card->qdio.do_prio_queueing
2562                         || (cast_type && card->info.is_multicast_different) ?
2563                         qeth_get_priority_queue(card, skb, ipv, cast_type) :
2564                         card->qdio.default_out_queue];
2565         int tx_bytes = skb->len;
2566         unsigned int hd_len = 0;
2567         bool use_tso;
2568         int data_offset = -1;
2569         unsigned int nr_frags;
2570
2571         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2572              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2573               ((card->options.cq == QETH_CQ_ENABLED) &&
2574                (be16_to_cpu(skb->protocol) != ETH_P_AF_IUCV)))) ||
2575             card->options.sniffer)
2576                         goto tx_drop;
2577
2578         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2579                 card->stats.tx_carrier_errors++;
2580                 goto tx_drop;
2581         }
2582
2583         if ((cast_type == RTN_BROADCAST) &&
2584             (card->info.broadcast_capable == 0))
2585                 goto tx_drop;
2586
2587         if (card->options.performance_stats) {
2588                 card->perf_stats.outbound_cnt++;
2589                 card->perf_stats.outbound_start_time = qeth_get_micros();
2590         }
2591
2592         /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2593         use_tso = skb_is_gso(skb) &&
2594                   (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4);
2595
2596         if (card->info.type == QETH_CARD_TYPE_IQD) {
2597                 new_skb = skb;
2598                 data_offset = ETH_HLEN;
2599                 hd_len = sizeof(*hdr);
2600                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2601                 if (!hdr)
2602                         goto tx_drop;
2603                 hdr_elements++;
2604         } else {
2605                 /* create a clone with writeable headroom */
2606                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2607                                         + VLAN_HLEN);
2608                 if (!new_skb)
2609                         goto tx_drop;
2610
2611                 if (ipv == 4) {
2612                         skb_pull(new_skb, ETH_HLEN);
2613                 }
2614
2615                 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2616                         skb_push(new_skb, VLAN_HLEN);
2617                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2618                         skb_copy_to_linear_data_offset(new_skb, 4,
2619                                 new_skb->data + 8, 4);
2620                         skb_copy_to_linear_data_offset(new_skb, 8,
2621                                 new_skb->data + 12, 4);
2622                         tag = (__be16 *)(new_skb->data + 12);
2623                         *tag = cpu_to_be16(ETH_P_8021Q);
2624                         *(tag + 1) = cpu_to_be16(skb_vlan_tag_get(new_skb));
2625                 }
2626         }
2627
2628         netif_stop_queue(dev);
2629
2630         /* fix hardware limitation: as long as we do not have sbal
2631          * chaining we can not send long frag lists
2632          */
2633         if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2634             ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2635              (!use_tso && !qeth_get_elements_no(card, new_skb, 0, 0)))) {
2636                 int lin_rc = skb_linearize(new_skb);
2637
2638                 if (card->options.performance_stats) {
2639                         if (lin_rc)
2640                                 card->perf_stats.tx_linfail++;
2641                         else
2642                                 card->perf_stats.tx_lin++;
2643                 }
2644                 if (lin_rc)
2645                         goto tx_drop;
2646         }
2647         nr_frags = skb_shinfo(new_skb)->nr_frags;
2648
2649         if (use_tso) {
2650                 hdr = skb_push(new_skb, sizeof(struct qeth_hdr_tso));
2651                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2652                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2653                 qeth_tso_fill_header(card, hdr, new_skb);
2654                 hdr_elements++;
2655         } else {
2656                 if (data_offset < 0) {
2657                         hdr = skb_push(new_skb, sizeof(struct qeth_hdr));
2658                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2659                                                 cast_type);
2660                 } else {
2661                         if (be16_to_cpu(new_skb->protocol) == ETH_P_AF_IUCV)
2662                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2663                         else {
2664                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2665                                                         cast_type);
2666                                 hdr->hdr.l3.length = new_skb->len - data_offset;
2667                         }
2668                 }
2669
2670                 if (skb->ip_summed == CHECKSUM_PARTIAL)
2671                         qeth_l3_hdr_csum(card, hdr, new_skb);
2672         }
2673
2674         elements = use_tso ?
2675                    qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2676                    qeth_get_elements_no(card, new_skb, hdr_elements,
2677                                         (data_offset > 0) ? data_offset : 0);
2678         if (!elements) {
2679                 if (data_offset >= 0)
2680                         kmem_cache_free(qeth_core_header_cache, hdr);
2681                 goto tx_drop;
2682         }
2683         elements += hdr_elements;
2684
2685         if (card->info.type != QETH_CARD_TYPE_IQD) {
2686                 int len;
2687                 if (use_tso) {
2688                         hd_len = sizeof(struct qeth_hdr_tso) +
2689                                  ip_hdrlen(new_skb) + tcp_hdrlen(new_skb);
2690                         len = hd_len;
2691                 } else {
2692                         len = sizeof(struct qeth_hdr_layer3);
2693                 }
2694
2695                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2696                         goto tx_drop;
2697                 rc = qeth_do_send_packet(card, queue, new_skb, hdr, hd_len,
2698                                          hd_len, elements);
2699         } else
2700                 rc = qeth_do_send_packet_fast(queue, new_skb, hdr, data_offset,
2701                                               hd_len);
2702
2703         if (!rc) {
2704                 card->stats.tx_packets++;
2705                 card->stats.tx_bytes += tx_bytes;
2706                 if (new_skb != skb)
2707                         dev_kfree_skb_any(skb);
2708                 if (card->options.performance_stats) {
2709                         if (use_tso) {
2710                                 card->perf_stats.large_send_bytes += tx_bytes;
2711                                 card->perf_stats.large_send_cnt++;
2712                         }
2713                         if (nr_frags) {
2714                                 card->perf_stats.sg_skbs_sent++;
2715                                 /* nr_frags + skb->data */
2716                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
2717                         }
2718                 }
2719                 rc = NETDEV_TX_OK;
2720         } else {
2721                 if (data_offset >= 0)
2722                         kmem_cache_free(qeth_core_header_cache, hdr);
2723
2724                 if (rc == -EBUSY) {
2725                         if (new_skb != skb)
2726                                 dev_kfree_skb_any(new_skb);
2727                         return NETDEV_TX_BUSY;
2728                 } else
2729                         goto tx_drop;
2730         }
2731
2732         netif_wake_queue(dev);
2733         if (card->options.performance_stats)
2734                 card->perf_stats.outbound_time += qeth_get_micros() -
2735                         card->perf_stats.outbound_start_time;
2736         return rc;
2737
2738 tx_drop:
2739         card->stats.tx_dropped++;
2740         card->stats.tx_errors++;
2741         if ((new_skb != skb) && new_skb)
2742                 dev_kfree_skb_any(new_skb);
2743         dev_kfree_skb_any(skb);
2744         netif_wake_queue(dev);
2745         return NETDEV_TX_OK;
2746 }
2747
2748 static int __qeth_l3_open(struct net_device *dev)
2749 {
2750         struct qeth_card *card = dev->ml_priv;
2751         int rc = 0;
2752
2753         QETH_CARD_TEXT(card, 4, "qethopen");
2754         if (card->state == CARD_STATE_UP)
2755                 return rc;
2756         if (card->state != CARD_STATE_SOFTSETUP)
2757                 return -ENODEV;
2758         card->data.state = CH_STATE_UP;
2759         card->state = CARD_STATE_UP;
2760         netif_start_queue(dev);
2761
2762         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2763                 napi_enable(&card->napi);
2764                 napi_schedule(&card->napi);
2765         } else
2766                 rc = -EIO;
2767         return rc;
2768 }
2769
2770 static int qeth_l3_open(struct net_device *dev)
2771 {
2772         struct qeth_card *card = dev->ml_priv;
2773
2774         QETH_CARD_TEXT(card, 5, "qethope_");
2775         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2776                 QETH_CARD_TEXT(card, 3, "openREC");
2777                 return -ERESTARTSYS;
2778         }
2779         return __qeth_l3_open(dev);
2780 }
2781
2782 static int qeth_l3_stop(struct net_device *dev)
2783 {
2784         struct qeth_card *card = dev->ml_priv;
2785
2786         QETH_CARD_TEXT(card, 4, "qethstop");
2787         netif_tx_disable(dev);
2788         if (card->state == CARD_STATE_UP) {
2789                 card->state = CARD_STATE_SOFTSETUP;
2790                 napi_disable(&card->napi);
2791         }
2792         return 0;
2793 }
2794
2795 static const struct ethtool_ops qeth_l3_ethtool_ops = {
2796         .get_link = ethtool_op_get_link,
2797         .get_strings = qeth_core_get_strings,
2798         .get_ethtool_stats = qeth_core_get_ethtool_stats,
2799         .get_sset_count = qeth_core_get_sset_count,
2800         .get_drvinfo = qeth_core_get_drvinfo,
2801         .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
2802 };
2803
2804 /*
2805  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2806  * NOARP on the netdevice is no option because it also turns off neighbor
2807  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2808  * arp resolution but we want the hard header (packet socket will work
2809  * e.g. tcpdump)
2810  */
2811 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2812 {
2813         n->nud_state = NUD_NOARP;
2814         memcpy(n->ha, "FAKELL", 6);
2815         n->output = n->ops->connected_output;
2816         return 0;
2817 }
2818
2819 static int
2820 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2821 {
2822         if (np->tbl->family == AF_INET)
2823                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2824
2825         return 0;
2826 }
2827
2828 static const struct net_device_ops qeth_l3_netdev_ops = {
2829         .ndo_open               = qeth_l3_open,
2830         .ndo_stop               = qeth_l3_stop,
2831         .ndo_get_stats          = qeth_get_stats,
2832         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2833         .ndo_validate_addr      = eth_validate_addr,
2834         .ndo_set_rx_mode        = qeth_l3_set_rx_mode,
2835         .ndo_do_ioctl           = qeth_do_ioctl,
2836         .ndo_change_mtu         = qeth_change_mtu,
2837         .ndo_fix_features       = qeth_fix_features,
2838         .ndo_set_features       = qeth_set_features,
2839         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2840         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2841         .ndo_tx_timeout         = qeth_tx_timeout,
2842 };
2843
2844 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2845         .ndo_open               = qeth_l3_open,
2846         .ndo_stop               = qeth_l3_stop,
2847         .ndo_get_stats          = qeth_get_stats,
2848         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2849         .ndo_features_check     = qeth_features_check,
2850         .ndo_validate_addr      = eth_validate_addr,
2851         .ndo_set_rx_mode        = qeth_l3_set_rx_mode,
2852         .ndo_do_ioctl           = qeth_do_ioctl,
2853         .ndo_change_mtu         = qeth_change_mtu,
2854         .ndo_fix_features       = qeth_fix_features,
2855         .ndo_set_features       = qeth_set_features,
2856         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2857         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2858         .ndo_tx_timeout         = qeth_tx_timeout,
2859         .ndo_neigh_setup        = qeth_l3_neigh_setup,
2860 };
2861
2862 static int qeth_l3_setup_netdev(struct qeth_card *card)
2863 {
2864         int rc;
2865
2866         if (card->info.type == QETH_CARD_TYPE_OSD ||
2867             card->info.type == QETH_CARD_TYPE_OSX) {
2868                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2869                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2870                         pr_info("qeth_l3: ignoring TR device\n");
2871                         return -ENODEV;
2872                 } else {
2873                         card->dev = alloc_etherdev(0);
2874                         if (!card->dev)
2875                                 return -ENODEV;
2876                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2877
2878                         /*IPv6 address autoconfiguration stuff*/
2879                         qeth_l3_get_unique_id(card);
2880                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2881                                 card->dev->dev_id = card->info.unique_id &
2882                                                          0xffff;
2883                         if (!card->info.guestlan) {
2884                                 card->dev->hw_features = NETIF_F_SG |
2885                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
2886                                         NETIF_F_TSO;
2887                                 card->dev->vlan_features = NETIF_F_SG |
2888                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
2889                                         NETIF_F_TSO;
2890                                 card->dev->features |= NETIF_F_SG;
2891                         }
2892                 }
2893         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2894                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
2895                                          ether_setup);
2896                 if (!card->dev)
2897                         return -ENODEV;
2898                 card->dev->flags |= IFF_NOARP;
2899                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2900                 rc = qeth_l3_iqd_read_initial_mac(card);
2901                 if (rc)
2902                         return rc;
2903                 if (card->options.hsuid[0])
2904                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
2905         } else
2906                 return -ENODEV;
2907
2908         card->dev->ml_priv = card;
2909         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
2910         card->dev->mtu = card->info.initial_mtu;
2911         card->dev->min_mtu = 64;
2912         card->dev->max_mtu = ETH_MAX_MTU;
2913         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
2914         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
2915                                 NETIF_F_HW_VLAN_CTAG_RX |
2916                                 NETIF_F_HW_VLAN_CTAG_FILTER;
2917         netif_keep_dst(card->dev);
2918         netif_set_gso_max_size(card->dev, (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
2919                                           PAGE_SIZE);
2920
2921         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
2922         netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2923         netif_carrier_off(card->dev);
2924         return register_netdev(card->dev);
2925 }
2926
2927 static const struct device_type qeth_l3_devtype = {
2928         .name = "qeth_layer3",
2929         .groups = qeth_l3_attr_groups,
2930 };
2931
2932 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2933 {
2934         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2935         int rc;
2936
2937         if (gdev->dev.type == &qeth_generic_devtype) {
2938                 rc = qeth_l3_create_device_attributes(&gdev->dev);
2939                 if (rc)
2940                         return rc;
2941         }
2942         hash_init(card->ip_htable);
2943         hash_init(card->ip_mc_htable);
2944         card->options.layer2 = 0;
2945         card->info.hwtrap = 0;
2946         return 0;
2947 }
2948
2949 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2950 {
2951         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2952
2953         if (cgdev->dev.type == &qeth_generic_devtype)
2954                 qeth_l3_remove_device_attributes(&cgdev->dev);
2955
2956         qeth_set_allowed_threads(card, 0, 1);
2957         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2958
2959         if (cgdev->state == CCWGROUP_ONLINE)
2960                 qeth_l3_set_offline(cgdev);
2961
2962         if (card->dev) {
2963                 netif_napi_del(&card->napi);
2964                 unregister_netdev(card->dev);
2965                 card->dev = NULL;
2966         }
2967
2968         qeth_l3_clear_ip_htable(card, 0);
2969         qeth_l3_clear_ipato_list(card);
2970         return;
2971 }
2972
2973 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
2974 {
2975         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2976         int rc = 0;
2977         enum qeth_card_states recover_flag;
2978
2979         mutex_lock(&card->discipline_mutex);
2980         mutex_lock(&card->conf_mutex);
2981         QETH_DBF_TEXT(SETUP, 2, "setonlin");
2982         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2983
2984         recover_flag = card->state;
2985         rc = qeth_core_hardsetup_card(card);
2986         if (rc) {
2987                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2988                 rc = -ENODEV;
2989                 goto out_remove;
2990         }
2991
2992         if (!card->dev && qeth_l3_setup_netdev(card)) {
2993                 rc = -ENODEV;
2994                 goto out_remove;
2995         }
2996
2997         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2998                 if (card->info.hwtrap &&
2999                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3000                         card->info.hwtrap = 0;
3001         } else
3002                 card->info.hwtrap = 0;
3003
3004         card->state = CARD_STATE_HARDSETUP;
3005         memset(&card->rx, 0, sizeof(struct qeth_rx));
3006         qeth_print_status_message(card);
3007
3008         /* softsetup */
3009         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3010
3011         rc = qeth_l3_setadapter_parms(card);
3012         if (rc)
3013                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3014         if (!card->options.sniffer) {
3015                 rc = qeth_l3_start_ipassists(card);
3016                 if (rc) {
3017                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3018                         goto out_remove;
3019                 }
3020                 rc = qeth_l3_setrouting_v4(card);
3021                 if (rc)
3022                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3023                 rc = qeth_l3_setrouting_v6(card);
3024                 if (rc)
3025                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3026         }
3027         netif_tx_disable(card->dev);
3028
3029         rc = qeth_init_qdio_queues(card);
3030         if (rc) {
3031                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3032                 rc = -ENODEV;
3033                 goto out_remove;
3034         }
3035         card->state = CARD_STATE_SOFTSETUP;
3036
3037         qeth_set_allowed_threads(card, 0xffffffff, 0);
3038         qeth_l3_recover_ip(card);
3039         if (card->lan_online)
3040                 netif_carrier_on(card->dev);
3041         else
3042                 netif_carrier_off(card->dev);
3043         if (recover_flag == CARD_STATE_RECOVER) {
3044                 rtnl_lock();
3045                 if (recovery_mode)
3046                         __qeth_l3_open(card->dev);
3047                 else
3048                         dev_open(card->dev);
3049                 qeth_l3_set_rx_mode(card->dev);
3050                 qeth_recover_features(card->dev);
3051                 rtnl_unlock();
3052         }
3053         qeth_trace_features(card);
3054         /* let user_space know that device is online */
3055         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3056         mutex_unlock(&card->conf_mutex);
3057         mutex_unlock(&card->discipline_mutex);
3058         return 0;
3059 out_remove:
3060         qeth_l3_stop_card(card, 0);
3061         ccw_device_set_offline(CARD_DDEV(card));
3062         ccw_device_set_offline(CARD_WDEV(card));
3063         ccw_device_set_offline(CARD_RDEV(card));
3064         qdio_free(CARD_DDEV(card));
3065         if (recover_flag == CARD_STATE_RECOVER)
3066                 card->state = CARD_STATE_RECOVER;
3067         else
3068                 card->state = CARD_STATE_DOWN;
3069         mutex_unlock(&card->conf_mutex);
3070         mutex_unlock(&card->discipline_mutex);
3071         return rc;
3072 }
3073
3074 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3075 {
3076         return __qeth_l3_set_online(gdev, 0);
3077 }
3078
3079 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3080                         int recovery_mode)
3081 {
3082         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3083         int rc = 0, rc2 = 0, rc3 = 0;
3084         enum qeth_card_states recover_flag;
3085
3086         mutex_lock(&card->discipline_mutex);
3087         mutex_lock(&card->conf_mutex);
3088         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3089         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3090
3091         if (card->dev && netif_carrier_ok(card->dev))
3092                 netif_carrier_off(card->dev);
3093         recover_flag = card->state;
3094         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3095                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3096                 card->info.hwtrap = 1;
3097         }
3098         qeth_l3_stop_card(card, recovery_mode);
3099         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3100                 rtnl_lock();
3101                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3102                 rtnl_unlock();
3103         }
3104         rc  = ccw_device_set_offline(CARD_DDEV(card));
3105         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3106         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3107         if (!rc)
3108                 rc = (rc2) ? rc2 : rc3;
3109         if (rc)
3110                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3111         qdio_free(CARD_DDEV(card));
3112         if (recover_flag == CARD_STATE_UP)
3113                 card->state = CARD_STATE_RECOVER;
3114         /* let user_space know that device is offline */
3115         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3116         mutex_unlock(&card->conf_mutex);
3117         mutex_unlock(&card->discipline_mutex);
3118         return 0;
3119 }
3120
3121 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3122 {
3123         return __qeth_l3_set_offline(cgdev, 0);
3124 }
3125
3126 static int qeth_l3_recover(void *ptr)
3127 {
3128         struct qeth_card *card;
3129         int rc = 0;
3130
3131         card = (struct qeth_card *) ptr;
3132         QETH_CARD_TEXT(card, 2, "recover1");
3133         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3134         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3135                 return 0;
3136         QETH_CARD_TEXT(card, 2, "recover2");
3137         dev_warn(&card->gdev->dev,
3138                 "A recovery process has been started for the device\n");
3139         qeth_set_recovery_task(card);
3140         __qeth_l3_set_offline(card->gdev, 1);
3141         rc = __qeth_l3_set_online(card->gdev, 1);
3142         if (!rc)
3143                 dev_info(&card->gdev->dev,
3144                         "Device successfully recovered!\n");
3145         else {
3146                 qeth_close_dev(card);
3147                 dev_warn(&card->gdev->dev, "The qeth device driver "
3148                                 "failed to recover an error on the device\n");
3149         }
3150         qeth_clear_recovery_task(card);
3151         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3152         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3153         return 0;
3154 }
3155
3156 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3157 {
3158         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3159
3160         if (card->dev)
3161                 netif_device_detach(card->dev);
3162         qeth_set_allowed_threads(card, 0, 1);
3163         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3164         if (gdev->state == CCWGROUP_OFFLINE)
3165                 return 0;
3166         if (card->state == CARD_STATE_UP) {
3167                 if (card->info.hwtrap)
3168                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3169                 __qeth_l3_set_offline(card->gdev, 1);
3170         } else
3171                 __qeth_l3_set_offline(card->gdev, 0);
3172         return 0;
3173 }
3174
3175 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3176 {
3177         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3178         int rc = 0;
3179
3180         if (gdev->state == CCWGROUP_OFFLINE)
3181                 goto out;
3182
3183         if (card->state == CARD_STATE_RECOVER) {
3184                 rc = __qeth_l3_set_online(card->gdev, 1);
3185                 if (rc) {
3186                         rtnl_lock();
3187                         dev_close(card->dev);
3188                         rtnl_unlock();
3189                 }
3190         } else
3191                 rc = __qeth_l3_set_online(card->gdev, 0);
3192 out:
3193         qeth_set_allowed_threads(card, 0xffffffff, 0);
3194         if (card->dev)
3195                 netif_device_attach(card->dev);
3196         if (rc)
3197                 dev_warn(&card->gdev->dev, "The qeth device driver "
3198                         "failed to recover an error on the device\n");
3199         return rc;
3200 }
3201
3202 /* Returns zero if the command is successfully "consumed" */
3203 static int qeth_l3_control_event(struct qeth_card *card,
3204                                         struct qeth_ipa_cmd *cmd)
3205 {
3206         return 1;
3207 }
3208
3209 struct qeth_discipline qeth_l3_discipline = {
3210         .devtype = &qeth_l3_devtype,
3211         .start_poll = qeth_qdio_start_poll,
3212         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3213         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3214         .process_rx_buffer = qeth_l3_process_inbound_buffer,
3215         .recover = qeth_l3_recover,
3216         .setup = qeth_l3_probe_device,
3217         .remove = qeth_l3_remove_device,
3218         .set_online = qeth_l3_set_online,
3219         .set_offline = qeth_l3_set_offline,
3220         .freeze = qeth_l3_pm_suspend,
3221         .thaw = qeth_l3_pm_resume,
3222         .restore = qeth_l3_pm_resume,
3223         .do_ioctl = qeth_l3_do_ioctl,
3224         .control_event_handler = qeth_l3_control_event,
3225 };
3226 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3227
3228 static int qeth_l3_ip_event(struct notifier_block *this,
3229                             unsigned long event, void *ptr)
3230 {
3231
3232         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3233         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3234         struct qeth_ipaddr *addr;
3235         struct qeth_card *card;
3236
3237         if (dev_net(dev) != &init_net)
3238                 return NOTIFY_DONE;
3239
3240         card = qeth_l3_get_card_from_dev(dev);
3241         if (!card)
3242                 return NOTIFY_DONE;
3243         QETH_CARD_TEXT(card, 3, "ipevent");
3244
3245         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3246         if (addr) {
3247                 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address);
3248                 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask);
3249                 addr->type = QETH_IP_TYPE_NORMAL;
3250         } else
3251                 return NOTIFY_DONE;
3252
3253         switch (event) {
3254         case NETDEV_UP:
3255                 spin_lock_bh(&card->ip_lock);
3256                 qeth_l3_add_ip(card, addr);
3257                 spin_unlock_bh(&card->ip_lock);
3258                 break;
3259         case NETDEV_DOWN:
3260                 spin_lock_bh(&card->ip_lock);
3261                 qeth_l3_delete_ip(card, addr);
3262                 spin_unlock_bh(&card->ip_lock);
3263                 break;
3264         }
3265
3266         kfree(addr);
3267         return NOTIFY_DONE;
3268 }
3269
3270 static struct notifier_block qeth_l3_ip_notifier = {
3271         qeth_l3_ip_event,
3272         NULL,
3273 };
3274
3275 static int qeth_l3_ip6_event(struct notifier_block *this,
3276                              unsigned long event, void *ptr)
3277 {
3278         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3279         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3280         struct qeth_ipaddr *addr;
3281         struct qeth_card *card;
3282
3283         card = qeth_l3_get_card_from_dev(dev);
3284         if (!card)
3285                 return NOTIFY_DONE;
3286         QETH_CARD_TEXT(card, 3, "ip6event");
3287         if (!qeth_is_supported(card, IPA_IPV6))
3288                 return NOTIFY_DONE;
3289
3290         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3291         if (addr) {
3292                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3293                 addr->u.a6.pfxlen = ifa->prefix_len;
3294                 addr->type = QETH_IP_TYPE_NORMAL;
3295         } else
3296                 return NOTIFY_DONE;
3297
3298         switch (event) {
3299         case NETDEV_UP:
3300                 spin_lock_bh(&card->ip_lock);
3301                 qeth_l3_add_ip(card, addr);
3302                 spin_unlock_bh(&card->ip_lock);
3303                 break;
3304         case NETDEV_DOWN:
3305                 spin_lock_bh(&card->ip_lock);
3306                 qeth_l3_delete_ip(card, addr);
3307                 spin_unlock_bh(&card->ip_lock);
3308                 break;
3309         }
3310
3311         kfree(addr);
3312         return NOTIFY_DONE;
3313 }
3314
3315 static struct notifier_block qeth_l3_ip6_notifier = {
3316         qeth_l3_ip6_event,
3317         NULL,
3318 };
3319
3320 static int qeth_l3_register_notifiers(void)
3321 {
3322         int rc;
3323
3324         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3325         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3326         if (rc)
3327                 return rc;
3328         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3329         if (rc) {
3330                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3331                 return rc;
3332         }
3333         return 0;
3334 }
3335
3336 static void qeth_l3_unregister_notifiers(void)
3337 {
3338         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3339         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3340         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3341 }
3342
3343 static int __init qeth_l3_init(void)
3344 {
3345         pr_info("register layer 3 discipline\n");
3346         return qeth_l3_register_notifiers();
3347 }
3348
3349 static void __exit qeth_l3_exit(void)
3350 {
3351         qeth_l3_unregister_notifiers();
3352         pr_info("unregister layer 3 discipline\n");
3353 }
3354
3355 module_init(qeth_l3_init);
3356 module_exit(qeth_l3_exit);
3357 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3358 MODULE_DESCRIPTION("qeth layer 3 discipline");
3359 MODULE_LICENSE("GPL");