drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/bitops.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/ip.h>
  20 #include <linux/ipv6.h>
  21 #include <linux/inetdevice.h>
  22 #include <linux/igmp.h>
  23 #include <linux/slab.h>
  24 #include <linux/if_vlan.h>
  25
  26 #include <net/ip.h>
  27 #include <net/arp.h>
  28 #include <net/route.h>
  29 #include <net/ip6_fib.h>
  30 #include <net/ip6_checksum.h>
  31 #include <net/iucv/af_iucv.h>
  32 #include <linux/hashtable.h>
  33
  34 #include "qeth_l3.h"
  35
  36
  37 static int qeth_l3_set_offline(struct ccwgroup_device *);
  38 static int qeth_l3_stop(struct net_device *);
  39 static void qeth_l3_set_multicast_list(struct net_device *);
  40 static int qeth_l3_register_addr_entry(struct qeth_card *,
  41                 struct qeth_ipaddr *);
  42 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  43                 struct qeth_ipaddr *);
  44
  45 static int qeth_l3_isxdigit(char *buf)
  46 {
  47         while (*buf) {
  48                 if (!isxdigit(*buf++))
  49                         return 0;
  50         }
  51         return 1;
  52 }
  53
  54 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  55 {
  56         sprintf(buf, "%pI4", addr);
  57 }
  58
  59 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  60 {
  61         int count = 0, rc = 0;
  62         unsigned int in[4];
  63         char c;
  64
  65         rc = sscanf(buf, "%u.%u.%u.%u%c",
  66                     &in[0], &in[1], &in[2], &in[3], &c);
  67         if (rc != 4 && (rc != 5 || c != '\n'))
  68                 return -EINVAL;
  69         for (count = 0; count < 4; count++) {
  70                 if (in[count] > 255)
  71                         return -EINVAL;
  72                 addr[count] = in[count];
  73         }
  74         return 0;
  75 }
  76
  77 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  78 {
  79         sprintf(buf, "%pI6", addr);
  80 }
  81
  82 static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  83 {
  84         const char *end, *end_tmp, *start;
  85         __u16 *in;
  86         char num[5];
  87         int num2, cnt, out, found, save_cnt;
  88         unsigned short in_tmp[8] = {0, };
  89
  90         cnt = out = found = save_cnt = num2 = 0;
  91         end = start = buf;
  92         in = (__u16 *) addr;
  93         memset(in, 0, 16);
  94         while (*end) {
  95                 end = strchr(start, ':');
  96                 if (end == NULL) {
  97                         end = buf + strlen(buf);
  98                         end_tmp = strchr(start, '\n');
  99                         if (end_tmp != NULL)
 100                                 end = end_tmp;
 101                         out = 1;
 102                 }
 103                 if ((end - start)) {
 104                         memset(num, 0, 5);
 105                         if ((end - start) > 4)
 106                                 return -EINVAL;
 107                         memcpy(num, start, end - start);
 108                         if (!qeth_l3_isxdigit(num))
 109                                 return -EINVAL;
 110                         sscanf(start, "%x", &num2);
 111                         if (found)
 112                                 in_tmp[save_cnt++] = num2;
 113                         else
 114                                 in[cnt++] = num2;
 115                         if (out)
 116                                 break;
 117                 } else {
 118                         if (found)
 119                                 return -EINVAL;
 120                         found = 1;
 121                 }
 122                 start = ++end;
 123         }
 124         if (cnt + save_cnt > 8)
 125                 return -EINVAL;
 126         cnt = 7;
 127         while (save_cnt)
 128                 in[cnt--] = in_tmp[--save_cnt];
 129         return 0;
 130 }
 131
 132 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 133                                 char *buf)
 134 {
 135         if (proto == QETH_PROT_IPV4)
 136                 qeth_l3_ipaddr4_to_string(addr, buf);
 137         else if (proto == QETH_PROT_IPV6)
 138                 qeth_l3_ipaddr6_to_string(addr, buf);
 139 }
 140
 141 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 142                                 __u8 *addr)
 143 {
 144         if (proto == QETH_PROT_IPV4)
 145                 return qeth_l3_string_to_ipaddr4(buf, addr);
 146         else if (proto == QETH_PROT_IPV6)
 147                 return qeth_l3_string_to_ipaddr6(buf, addr);
 148         else
 149                 return -EINVAL;
 150 }
 151
 152 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 153 {
 154         int i, j;
 155         u8 octet;
 156
 157         for (i = 0; i < len; ++i) {
 158                 octet = addr[i];
 159                 for (j = 7; j >= 0; --j) {
 160                         bits[i*8 + j] = octet & 1;
 161                         octet >>= 1;
 162                 }
 163         }
 164 }
 165
 166 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 167                                                 struct qeth_ipaddr *addr)
 168 {
 169         struct qeth_ipato_entry *ipatoe;
 170         u8 addr_bits[128] = {0, };
 171         u8 ipatoe_bits[128] = {0, };
 172         int rc = 0;
 173
 174         if (!card->ipato.enabled)
 175                 return 0;
 176
 177         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 178                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 179         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 180                 if (addr->proto != ipatoe->proto)
 181                         continue;
 182                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 183                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 184                                           4 : 16);
 185                 if (addr->proto == QETH_PROT_IPV4)
 186                         rc = !memcmp(addr_bits, ipatoe_bits,
 187                                      min(32, ipatoe->mask_bits));
 188                 else
 189                         rc = !memcmp(addr_bits, ipatoe_bits,
 190                                      min(128, ipatoe->mask_bits));
 191                 if (rc)
 192                         break;
 193         }
 194         /* invert? */
 195         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 196                 rc = !rc;
 197         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 198                 rc = !rc;
 199
 200         return rc;
 201 }
 202
 203 inline int
 204 qeth_l3_ipaddrs_is_equal(struct qeth_ipaddr *addr1, struct qeth_ipaddr *addr2)
 205 {
 206         return addr1->proto == addr2->proto &&
 207                 !memcmp(&addr1->u, &addr2->u, sizeof(addr1->u))  &&
 208                 !memcmp(&addr1->mac, &addr2->mac, sizeof(addr1->mac));
 209 }
 210
 211 static struct qeth_ipaddr *
 212 qeth_l3_ip_from_hash(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 213 {
 214         struct qeth_ipaddr *addr;
 215
 216         if (tmp_addr->is_multicast) {
 217                 hash_for_each_possible(card->ip_mc_htable,  addr,
 218                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 219                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 220                                 return addr;
 221         } else {
 222                 hash_for_each_possible(card->ip_htable,  addr,
 223                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 224                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 225                                 return addr;
 226         }
 227
 228         return NULL;
 229 }
 230
 231 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 232 {
 233         int rc = 0;
 234         struct qeth_ipaddr *addr;
 235
 236         QETH_CARD_TEXT(card, 4, "delip");
 237
 238         if (tmp_addr->proto == QETH_PROT_IPV4)
 239                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 240         else {
 241                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 242                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 243         }
 244
 245         addr = qeth_l3_ip_from_hash(card, tmp_addr);
 246         if (!addr)
 247                 return -ENOENT;
 248
 249         addr->ref_counter--;
 250         if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
 251                 return rc;
 252         if (addr->in_progress)
 253                 return -EINPROGRESS;
 254
 255         if (!qeth_card_hw_is_reachable(card)) {
 256                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
 257                 return 0;
 258         }
 259
 260         rc = qeth_l3_deregister_addr_entry(card, addr);
 261
 262         hash_del(&addr->hnode);
 263         kfree(addr);
 264
 265         return rc;
 266 }
 267
 268 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 269 {
 270         int rc = 0;
 271         struct qeth_ipaddr *addr;
 272
 273         QETH_CARD_TEXT(card, 4, "addip");
 274
 275         if (tmp_addr->proto == QETH_PROT_IPV4)
 276                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 277         else {
 278                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 279                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 280         }
 281
 282         addr = qeth_l3_ip_from_hash(card, tmp_addr);
 283         if (!addr) {
 284                 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
 285                 if (!addr)
 286                         return -ENOMEM;
 287
 288                 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
 289                 addr->ref_counter = 1;
 290
 291                 if (addr->type == QETH_IP_TYPE_NORMAL  &&
 292                                 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 293                         QETH_CARD_TEXT(card, 2, "tkovaddr");
 294                         addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 295                 }
 296                 hash_add(card->ip_htable, &addr->hnode,
 297                                 qeth_l3_ipaddr_hash(addr));
 298
 299                 if (!qeth_card_hw_is_reachable(card)) {
 300                         addr->disp_flag = QETH_DISP_ADDR_ADD;
 301                         return 0;
 302                 }
 303
 304                 /* qeth_l3_register_addr_entry can go to sleep
 305                  * if we add a IPV4 addr. It is caused by the reason
 306                  * that SETIP ipa cmd starts ARP staff for IPV4 addr.
 307                  * Thus we should unlock spinlock, and make a protection
 308                  * using in_progress variable to indicate that there is
 309                  * an hardware operation with this IPV4 address
 310                  */
 311                 if (addr->proto == QETH_PROT_IPV4) {
 312                         addr->in_progress = 1;
 313                         spin_unlock_bh(&card->ip_lock);
 314                         rc = qeth_l3_register_addr_entry(card, addr);
 315                         spin_lock_bh(&card->ip_lock);
 316                         addr->in_progress = 0;
 317                 } else
 318                         rc = qeth_l3_register_addr_entry(card, addr);
 319
 320                 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
 321                                 (rc == IPA_RC_LAN_OFFLINE)) {
 322                         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 323                         if (addr->ref_counter < 1) {
 324                                 qeth_l3_delete_ip(card, addr);
 325                                 kfree(addr);
 326                         }
 327                 } else {
 328                         hash_del(&addr->hnode);
 329                         kfree(addr);
 330                 }
 331         } else {
 332                         if (addr->type == QETH_IP_TYPE_NORMAL)
 333                                 addr->ref_counter++;
 334         }
 335
 336         return rc;
 337 }
 338
 339
 340 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 341                                 enum qeth_prot_versions prot)
 342 {
 343         struct qeth_ipaddr *addr;
 344
 345         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 346         if (!addr)
 347                 return NULL;
 348
 349         addr->type = QETH_IP_TYPE_NORMAL;
 350         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 351         addr->proto = prot;
 352
 353         return addr;
 354 }
 355
 356 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 357 {
 358         struct qeth_ipaddr *addr;
 359         struct hlist_node *tmp;
 360         int i;
 361
 362         QETH_CARD_TEXT(card, 4, "clearip");
 363
 364         if (recover && card->options.sniffer)
 365                 return;
 366
 367         spin_lock_bh(&card->ip_lock);
 368
 369         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 370                 if (!recover) {
 371                         hash_del(&addr->hnode);
 372                         kfree(addr);
 373                         continue;
 374                 }
 375                 addr->disp_flag = QETH_DISP_ADDR_ADD;
 376         }
 377
 378         spin_unlock_bh(&card->ip_lock);
 379
 380         spin_lock_bh(&card->mclock);
 381
 382         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
 383                 hash_del(&addr->hnode);
 384                 kfree(addr);
 385         }
 386
 387         spin_unlock_bh(&card->mclock);
 388
 389
 390 }
 391 static void qeth_l3_recover_ip(struct qeth_card *card)
 392 {
 393         struct qeth_ipaddr *addr;
 394         struct hlist_node *tmp;
 395         int i;
 396         int rc;
 397
 398         QETH_CARD_TEXT(card, 4, "recovrip");
 399
 400         spin_lock_bh(&card->ip_lock);
 401
 402         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 403                 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
 404                         qeth_l3_deregister_addr_entry(card, addr);
 405                         hash_del(&addr->hnode);
 406                         kfree(addr);
 407                 } else if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
 408                         if (addr->proto == QETH_PROT_IPV4) {
 409                                 addr->in_progress = 1;
 410                                 spin_unlock_bh(&card->ip_lock);
 411                                 rc = qeth_l3_register_addr_entry(card, addr);
 412                                 spin_lock_bh(&card->ip_lock);
 413                                 addr->in_progress = 0;
 414                         } else
 415                                 rc = qeth_l3_register_addr_entry(card, addr);
 416
 417                         if (!rc) {
 418                                 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 419                                 if (addr->ref_counter < 1)
 420                                         qeth_l3_delete_ip(card, addr);
 421                         } else {
 422                                 hash_del(&addr->hnode);
 423                                 kfree(addr);
 424                         }
 425                 }
 426         }
 427
 428         spin_unlock_bh(&card->ip_lock);
 429
 430 }
 431
 432 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 433                         struct qeth_ipaddr *addr, int ipacmd)
 434 {
 435         int rc;
 436         struct qeth_cmd_buffer *iob;
 437         struct qeth_ipa_cmd *cmd;
 438
 439         QETH_CARD_TEXT(card, 4, "setdelmc");
 440
 441         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 442         if (!iob)
 443                 return -ENOMEM;
 444         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 445         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 446         if (addr->proto == QETH_PROT_IPV6)
 447                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 448                        sizeof(struct in6_addr));
 449         else
 450                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 451
 452         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 453
 454         return rc;
 455 }
 456
 457 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 458 {
 459         int i, j;
 460         for (i = 0; i < 16; i++) {
 461                 j = (len) - (i * 8);
 462                 if (j >= 8)
 463                         netmask[i] = 0xff;
 464                 else if (j > 0)
 465                         netmask[i] = (u8)(0xFF00 >> j);
 466                 else
 467                         netmask[i] = 0;
 468         }
 469 }
 470
 471 static int qeth_l3_send_setdelip(struct qeth_card *card,
 472                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 473 {
 474         int rc;
 475         struct qeth_cmd_buffer *iob;
 476         struct qeth_ipa_cmd *cmd;
 477         __u8 netmask[16];
 478
 479         QETH_CARD_TEXT(card, 4, "setdelip");
 480         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 481
 482         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 483         if (!iob)
 484                 return -ENOMEM;
 485         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 486         if (addr->proto == QETH_PROT_IPV6) {
 487                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 488                        sizeof(struct in6_addr));
 489                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 490                 memcpy(cmd->data.setdelip6.mask, netmask,
 491                        sizeof(struct in6_addr));
 492                 cmd->data.setdelip6.flags = flags;
 493         } else {
 494                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 495                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 496                 cmd->data.setdelip4.flags = flags;
 497         }
 498
 499         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 500
 501         return rc;
 502 }
 503
 504 static int qeth_l3_send_setrouting(struct qeth_card *card,
 505         enum qeth_routing_types type, enum qeth_prot_versions prot)
 506 {
 507         int rc;
 508         struct qeth_ipa_cmd *cmd;
 509         struct qeth_cmd_buffer *iob;
 510
 511         QETH_CARD_TEXT(card, 4, "setroutg");
 512         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 513         if (!iob)
 514                 return -ENOMEM;
 515         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 516         cmd->data.setrtg.type = (type);
 517         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 518
 519         return rc;
 520 }
 521
 522 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 523                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 524 {
 525         if (card->info.type == QETH_CARD_TYPE_IQD) {
 526                 switch (*type) {
 527                 case NO_ROUTER:
 528                 case PRIMARY_CONNECTOR:
 529                 case SECONDARY_CONNECTOR:
 530                 case MULTICAST_ROUTER:
 531                         return 0;
 532                 default:
 533                         goto out_inval;
 534                 }
 535         } else {
 536                 switch (*type) {
 537                 case NO_ROUTER:
 538                 case PRIMARY_ROUTER:
 539                 case SECONDARY_ROUTER:
 540                         return 0;
 541                 case MULTICAST_ROUTER:
 542                         if (qeth_is_ipafunc_supported(card, prot,
 543                                                       IPA_OSA_MC_ROUTER))
 544                                 return 0;
 545                 default:
 546                         goto out_inval;
 547                 }
 548         }
 549 out_inval:
 550         *type = NO_ROUTER;
 551         return -EINVAL;
 552 }
 553
 554 int qeth_l3_setrouting_v4(struct qeth_card *card)
 555 {
 556         int rc;
 557
 558         QETH_CARD_TEXT(card, 3, "setrtg4");
 559
 560         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 561                                   QETH_PROT_IPV4);
 562         if (rc)
 563                 return rc;
 564
 565         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 566                                   QETH_PROT_IPV4);
 567         if (rc) {
 568                 card->options.route4.type = NO_ROUTER;
 569                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 570                         " on %s. Type set to 'no router'.\n", rc,
 571                         QETH_CARD_IFNAME(card));
 572         }
 573         return rc;
 574 }
 575
 576 int qeth_l3_setrouting_v6(struct qeth_card *card)
 577 {
 578         int rc = 0;
 579
 580         QETH_CARD_TEXT(card, 3, "setrtg6");
 581 #ifdef CONFIG_QETH_IPV6
 582
 583         if (!qeth_is_supported(card, IPA_IPV6))
 584                 return 0;
 585         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 586                                   QETH_PROT_IPV6);
 587         if (rc)
 588                 return rc;
 589
 590         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 591                                   QETH_PROT_IPV6);
 592         if (rc) {
 593                 card->options.route6.type = NO_ROUTER;
 594                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 595                         " on %s. Type set to 'no router'.\n", rc,
 596                         QETH_CARD_IFNAME(card));
 597         }
 598 #endif
 599         return rc;
 600 }
 601
 602 /*
 603  * IP address takeover related functions
 604  */
 605 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 606 {
 607         struct qeth_ipato_entry *ipatoe, *tmp;
 608
 609         spin_lock_bh(&card->ip_lock);
 610
 611         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 612                 list_del(&ipatoe->entry);
 613                 kfree(ipatoe);
 614         }
 615
 616         spin_unlock_bh(&card->ip_lock);
 617 }
 618
 619 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 620                                 struct qeth_ipato_entry *new)
 621 {
 622         struct qeth_ipato_entry *ipatoe;
 623         int rc = 0;
 624
 625         QETH_CARD_TEXT(card, 2, "addipato");
 626
 627         spin_lock_bh(&card->ip_lock);
 628
 629         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 630                 if (ipatoe->proto != new->proto)
 631                         continue;
 632                 if (!memcmp(ipatoe->addr, new->addr,
 633                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 634                     (ipatoe->mask_bits == new->mask_bits)) {
 635                         rc = -EEXIST;
 636                         break;
 637                 }
 638         }
 639
 640         if (!rc)
 641                 list_add_tail(&new->entry, &card->ipato.entries);
 642
 643         spin_unlock_bh(&card->ip_lock);
 644
 645         return rc;
 646 }
 647
 648 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 649                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 650 {
 651         struct qeth_ipato_entry *ipatoe, *tmp;
 652
 653         QETH_CARD_TEXT(card, 2, "delipato");
 654
 655         spin_lock_bh(&card->ip_lock);
 656
 657         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 658                 if (ipatoe->proto != proto)
 659                         continue;
 660                 if (!memcmp(ipatoe->addr, addr,
 661                             (proto == QETH_PROT_IPV4)? 4:16) &&
 662                     (ipatoe->mask_bits == mask_bits)) {
 663                         list_del(&ipatoe->entry);
 664                         kfree(ipatoe);
 665                 }
 666         }
 667
 668         spin_unlock_bh(&card->ip_lock);
 669 }
 670
 671 /*
 672  * VIPA related functions
 673  */
 674 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 675               const u8 *addr)
 676 {
 677         struct qeth_ipaddr *ipaddr;
 678         int rc = 0;
 679
 680         ipaddr = qeth_l3_get_addr_buffer(proto);
 681         if (ipaddr) {
 682                 if (proto == QETH_PROT_IPV4) {
 683                         QETH_CARD_TEXT(card, 2, "addvipa4");
 684                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 685                         ipaddr->u.a4.mask = 0;
 686                 } else if (proto == QETH_PROT_IPV6) {
 687                         QETH_CARD_TEXT(card, 2, "addvipa6");
 688                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 689                         ipaddr->u.a6.pfxlen = 0;
 690                 }
 691                 ipaddr->type = QETH_IP_TYPE_VIPA;
 692                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 693                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 694         } else
 695                 return -ENOMEM;
 696
 697         spin_lock_bh(&card->ip_lock);
 698
 699         if (qeth_l3_ip_from_hash(card, ipaddr))
 700                 rc = -EEXIST;
 701         else
 702                 qeth_l3_add_ip(card, ipaddr);
 703
 704         spin_unlock_bh(&card->ip_lock);
 705
 706         kfree(ipaddr);
 707
 708         return rc;
 709 }
 710
 711 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 712               const u8 *addr)
 713 {
 714         struct qeth_ipaddr *ipaddr;
 715
 716         ipaddr = qeth_l3_get_addr_buffer(proto);
 717         if (ipaddr) {
 718                 if (proto == QETH_PROT_IPV4) {
 719                         QETH_CARD_TEXT(card, 2, "delvipa4");
 720                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 721                         ipaddr->u.a4.mask = 0;
 722                 } else if (proto == QETH_PROT_IPV6) {
 723                         QETH_CARD_TEXT(card, 2, "delvipa6");
 724                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 725                         ipaddr->u.a6.pfxlen = 0;
 726                 }
 727                 ipaddr->type = QETH_IP_TYPE_VIPA;
 728         } else
 729                 return;
 730
 731         spin_lock_bh(&card->ip_lock);
 732         qeth_l3_delete_ip(card, ipaddr);
 733         spin_unlock_bh(&card->ip_lock);
 734
 735         kfree(ipaddr);
 736 }
 737
 738 /*
 739  * proxy ARP related functions
 740  */
 741 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 742               const u8 *addr)
 743 {
 744         struct qeth_ipaddr *ipaddr;
 745         int rc = 0;
 746
 747         ipaddr = qeth_l3_get_addr_buffer(proto);
 748         if (ipaddr) {
 749                 if (proto == QETH_PROT_IPV4) {
 750                         QETH_CARD_TEXT(card, 2, "addrxip4");
 751                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 752                         ipaddr->u.a4.mask = 0;
 753                 } else if (proto == QETH_PROT_IPV6) {
 754                         QETH_CARD_TEXT(card, 2, "addrxip6");
 755                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 756                         ipaddr->u.a6.pfxlen = 0;
 757                 }
 758
 759                 ipaddr->type = QETH_IP_TYPE_RXIP;
 760                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 761                 ipaddr->del_flags = 0;
 762         } else
 763                 return -ENOMEM;
 764
 765         spin_lock_bh(&card->ip_lock);
 766
 767         if (qeth_l3_ip_from_hash(card, ipaddr))
 768                 rc = -EEXIST;
 769         else
 770                 qeth_l3_add_ip(card, ipaddr);
 771
 772         spin_unlock_bh(&card->ip_lock);
 773
 774         kfree(ipaddr);
 775
 776         return rc;
 777 }
 778
 779 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 780                         const u8 *addr)
 781 {
 782         struct qeth_ipaddr *ipaddr;
 783
 784         ipaddr = qeth_l3_get_addr_buffer(proto);
 785         if (ipaddr) {
 786                 if (proto == QETH_PROT_IPV4) {
 787                         QETH_CARD_TEXT(card, 2, "addrxip4");
 788                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 789                         ipaddr->u.a4.mask = 0;
 790                 } else if (proto == QETH_PROT_IPV6) {
 791                         QETH_CARD_TEXT(card, 2, "addrxip6");
 792                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 793                         ipaddr->u.a6.pfxlen = 0;
 794                 }
 795                 ipaddr->type = QETH_IP_TYPE_RXIP;
 796         } else
 797                 return;
 798
 799         spin_lock_bh(&card->ip_lock);
 800         qeth_l3_delete_ip(card, ipaddr);
 801         spin_unlock_bh(&card->ip_lock);
 802
 803         kfree(ipaddr);
 804 }
 805
 806 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 807                                 struct qeth_ipaddr *addr)
 808 {
 809         char buf[50];
 810         int rc = 0;
 811         int cnt = 3;
 812
 813
 814         if (addr->proto == QETH_PROT_IPV4) {
 815                 QETH_CARD_TEXT(card, 2, "setaddr4");
 816                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 817         } else if (addr->proto == QETH_PROT_IPV6) {
 818                 QETH_CARD_TEXT(card, 2, "setaddr6");
 819                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 820                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 821         } else {
 822                 QETH_CARD_TEXT(card, 2, "setaddr?");
 823                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 824         }
 825         do {
 826                 if (addr->is_multicast)
 827                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 828                 else
 829                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 830                                         addr->set_flags);
 831                 if (rc)
 832                         QETH_CARD_TEXT(card, 2, "failed");
 833         } while ((--cnt > 0) && rc);
 834         if (rc) {
 835                 QETH_CARD_TEXT(card, 2, "FAILED");
 836                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 837                 dev_warn(&card->gdev->dev,
 838                         "Registering IP address %s failed\n", buf);
 839         }
 840         return rc;
 841 }
 842
 843 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 844                                                 struct qeth_ipaddr *addr)
 845 {
 846         int rc = 0;
 847
 848         if (addr->proto == QETH_PROT_IPV4) {
 849                 QETH_CARD_TEXT(card, 2, "deladdr4");
 850                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 851         } else if (addr->proto == QETH_PROT_IPV6) {
 852                 QETH_CARD_TEXT(card, 2, "deladdr6");
 853                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 854                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 855         } else {
 856                 QETH_CARD_TEXT(card, 2, "deladdr?");
 857                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 858         }
 859         if (addr->is_multicast)
 860                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 861         else
 862                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 863                                         addr->del_flags);
 864         if (rc)
 865                 QETH_CARD_TEXT(card, 2, "failed");
 866
 867         return rc;
 868 }
 869
 870 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 871 {
 872         if (cast_type == RTN_MULTICAST)
 873                 return QETH_CAST_MULTICAST;
 874         if (cast_type == RTN_BROADCAST)
 875                 return QETH_CAST_BROADCAST;
 876         return QETH_CAST_UNICAST;
 877 }
 878
 879 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 880 {
 881         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 882         if (cast_type == RTN_MULTICAST)
 883                 return ct | QETH_CAST_MULTICAST;
 884         if (cast_type == RTN_ANYCAST)
 885                 return ct | QETH_CAST_ANYCAST;
 886         if (cast_type == RTN_BROADCAST)
 887                 return ct | QETH_CAST_BROADCAST;
 888         return ct | QETH_CAST_UNICAST;
 889 }
 890
 891 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 892 {
 893         int rc;
 894
 895         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 896
 897         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 898                 dev_info(&card->gdev->dev,
 899                         "set adapter parameters not supported.\n");
 900                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 901                 return 0;
 902         }
 903         rc = qeth_query_setadapterparms(card);
 904         if (rc) {
 905                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
 906                         "0x%x\n", dev_name(&card->gdev->dev), rc);
 907                 return rc;
 908         }
 909         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 910                 rc = qeth_setadpparms_change_macaddr(card);
 911                 if (rc)
 912                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
 913                                 " address failed\n");
 914         }
 915
 916         return rc;
 917 }
 918
 919 #ifdef CONFIG_QETH_IPV6
 920 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
 921                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
 922 {
 923         int rc;
 924         struct qeth_cmd_buffer *iob;
 925
 926         QETH_CARD_TEXT(card, 4, "simassp6");
 927         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
 928                                        0, QETH_PROT_IPV6);
 929         if (!iob)
 930                 return -ENOMEM;
 931         rc = qeth_send_setassparms(card, iob, 0, 0,
 932                                    qeth_setassparms_cb, NULL);
 933         return rc;
 934 }
 935 #endif
 936
 937 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
 938 {
 939         int rc;
 940
 941         QETH_CARD_TEXT(card, 3, "ipaarp");
 942
 943         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 944                 dev_info(&card->gdev->dev,
 945                         "ARP processing not supported on %s!\n",
 946                         QETH_CARD_IFNAME(card));
 947                 return 0;
 948         }
 949         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
 950                                           IPA_CMD_ASS_START, 0);
 951         if (rc) {
 952                 dev_warn(&card->gdev->dev,
 953                         "Starting ARP processing support for %s failed\n",
 954                         QETH_CARD_IFNAME(card));
 955         }
 956         return rc;
 957 }
 958
 959 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
 960 {
 961         int rc;
 962
 963         QETH_CARD_TEXT(card, 3, "ipaipfrg");
 964
 965         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
 966                 dev_info(&card->gdev->dev,
 967                         "Hardware IP fragmentation not supported on %s\n",
 968                         QETH_CARD_IFNAME(card));
 969                 return  -EOPNOTSUPP;
 970         }
 971
 972         rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
 973                                           IPA_CMD_ASS_START, 0);
 974         if (rc) {
 975                 dev_warn(&card->gdev->dev,
 976                         "Starting IP fragmentation support for %s failed\n",
 977                         QETH_CARD_IFNAME(card));
 978         } else
 979                 dev_info(&card->gdev->dev,
 980                         "Hardware IP fragmentation enabled \n");
 981         return rc;
 982 }
 983
 984 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
 985 {
 986         int rc;
 987
 988         QETH_CARD_TEXT(card, 3, "stsrcmac");
 989
 990         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
 991                 dev_info(&card->gdev->dev,
 992                         "Inbound source MAC-address not supported on %s\n",
 993                         QETH_CARD_IFNAME(card));
 994                 return -EOPNOTSUPP;
 995         }
 996
 997         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
 998                                           IPA_CMD_ASS_START, 0);
 999         if (rc)
1000                 dev_warn(&card->gdev->dev,
1001                         "Starting source MAC-address support for %s failed\n",
1002                         QETH_CARD_IFNAME(card));
1003         return rc;
1004 }
1005
1006 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1007 {
1008         int rc = 0;
1009
1010         QETH_CARD_TEXT(card, 3, "strtvlan");
1011
1012         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1013                 dev_info(&card->gdev->dev,
1014                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1015                 return -EOPNOTSUPP;
1016         }
1017
1018         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
1019                                           IPA_CMD_ASS_START, 0);
1020         if (rc) {
1021                 dev_warn(&card->gdev->dev,
1022                         "Starting VLAN support for %s failed\n",
1023                         QETH_CARD_IFNAME(card));
1024         } else {
1025                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1026         }
1027         return rc;
1028 }
1029
1030 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1031 {
1032         int rc;
1033
1034         QETH_CARD_TEXT(card, 3, "stmcast");
1035
1036         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1037                 dev_info(&card->gdev->dev,
1038                         "Multicast not supported on %s\n",
1039                         QETH_CARD_IFNAME(card));
1040                 return -EOPNOTSUPP;
1041         }
1042
1043         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1044                                           IPA_CMD_ASS_START, 0);
1045         if (rc) {
1046                 dev_warn(&card->gdev->dev,
1047                         "Starting multicast support for %s failed\n",
1048                         QETH_CARD_IFNAME(card));
1049         } else {
1050                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1051                 card->dev->flags |= IFF_MULTICAST;
1052         }
1053         return rc;
1054 }
1055
1056 #ifdef CONFIG_QETH_IPV6
1057 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1058 {
1059         int rc;
1060
1061         QETH_CARD_TEXT(card, 3, "softipv6");
1062
1063         if (card->info.type == QETH_CARD_TYPE_IQD)
1064                 goto out;
1065
1066         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1067         if (rc) {
1068                 dev_err(&card->gdev->dev,
1069                         "Activating IPv6 support for %s failed\n",
1070                         QETH_CARD_IFNAME(card));
1071                 return rc;
1072         }
1073         rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1074                                           IPA_CMD_ASS_START, 3);
1075         if (rc) {
1076                 dev_err(&card->gdev->dev,
1077                         "Activating IPv6 support for %s failed\n",
1078                         QETH_CARD_IFNAME(card));
1079                 return rc;
1080         }
1081         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1082                                                IPA_CMD_ASS_START);
1083         if (rc) {
1084                 dev_err(&card->gdev->dev,
1085                         "Activating IPv6 support for %s failed\n",
1086                          QETH_CARD_IFNAME(card));
1087                 return rc;
1088         }
1089         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1090                                                IPA_CMD_ASS_START);
1091         if (rc) {
1092                 dev_warn(&card->gdev->dev,
1093                         "Enabling the passthrough mode for %s failed\n",
1094                         QETH_CARD_IFNAME(card));
1095                 return rc;
1096         }
1097 out:
1098         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1099         return 0;
1100 }
1101 #endif
1102
1103 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1104 {
1105         int rc = 0;
1106
1107         QETH_CARD_TEXT(card, 3, "strtipv6");
1108
1109         if (!qeth_is_supported(card, IPA_IPV6)) {
1110                 dev_info(&card->gdev->dev,
1111                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1112                 return 0;
1113         }
1114 #ifdef CONFIG_QETH_IPV6
1115         rc = qeth_l3_softsetup_ipv6(card);
1116 #endif
1117         return rc ;
1118 }
1119
1120 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1121 {
1122         int rc;
1123
1124         QETH_CARD_TEXT(card, 3, "stbrdcst");
1125         card->info.broadcast_capable = 0;
1126         if (!qeth_is_supported(card, IPA_FILTERING)) {
1127                 dev_info(&card->gdev->dev,
1128                         "Broadcast not supported on %s\n",
1129                         QETH_CARD_IFNAME(card));
1130                 rc = -EOPNOTSUPP;
1131                 goto out;
1132         }
1133         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1134                                           IPA_CMD_ASS_START, 0);
1135         if (rc) {
1136                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1137                         "%s failed\n", QETH_CARD_IFNAME(card));
1138                 goto out;
1139         }
1140
1141         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1142                                           IPA_CMD_ASS_CONFIGURE, 1);
1143         if (rc) {
1144                 dev_warn(&card->gdev->dev,
1145                         "Setting up broadcast filtering for %s failed\n",
1146                         QETH_CARD_IFNAME(card));
1147                 goto out;
1148         }
1149         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1150         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1151         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1152                                           IPA_CMD_ASS_ENABLE, 1);
1153         if (rc) {
1154                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1155                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1156                 goto out;
1157         }
1158         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1159 out:
1160         if (card->info.broadcast_capable)
1161                 card->dev->flags |= IFF_BROADCAST;
1162         else
1163                 card->dev->flags &= ~IFF_BROADCAST;
1164         return rc;
1165 }
1166
1167 static int qeth_l3_start_ipassists(struct qeth_card *card)
1168 {
1169         QETH_CARD_TEXT(card, 3, "strtipas");
1170
1171         if (qeth_set_access_ctrl_online(card, 0))
1172                 return -EIO;
1173         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1174         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1175         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1176         qeth_l3_start_ipa_vlan(card);           /* go on*/
1177         qeth_l3_start_ipa_multicast(card);              /* go on*/
1178         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1179         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1180         return 0;
1181 }
1182
1183 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1184                 struct qeth_reply *reply, unsigned long data)
1185 {
1186         struct qeth_ipa_cmd *cmd;
1187
1188         cmd = (struct qeth_ipa_cmd *) data;
1189         if (cmd->hdr.return_code == 0)
1190                 memcpy(card->dev->dev_addr,
1191                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1192         else
1193                 eth_random_addr(card->dev->dev_addr);
1194
1195         return 0;
1196 }
1197
1198 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1199 {
1200         int rc = 0;
1201         struct qeth_cmd_buffer *iob;
1202         struct qeth_ipa_cmd *cmd;
1203
1204         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1205
1206         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1207                                      QETH_PROT_IPV6);
1208         if (!iob)
1209                 return -ENOMEM;
1210         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1211         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1212                         card->info.unique_id;
1213
1214         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1215                                 NULL);
1216         return rc;
1217 }
1218
1219 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1220                 struct qeth_reply *reply, unsigned long data)
1221 {
1222         struct qeth_ipa_cmd *cmd;
1223
1224         cmd = (struct qeth_ipa_cmd *) data;
1225         if (cmd->hdr.return_code == 0)
1226                 card->info.unique_id = *((__u16 *)
1227                                 &cmd->data.create_destroy_addr.unique_id[6]);
1228         else {
1229                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1230                                         UNIQUE_ID_NOT_BY_CARD;
1231                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1232                         "generate a unique ID\n");
1233         }
1234         return 0;
1235 }
1236
1237 static int qeth_l3_get_unique_id(struct qeth_card *card)
1238 {
1239         int rc = 0;
1240         struct qeth_cmd_buffer *iob;
1241         struct qeth_ipa_cmd *cmd;
1242
1243         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1244
1245         if (!qeth_is_supported(card, IPA_IPV6)) {
1246                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1247                                         UNIQUE_ID_NOT_BY_CARD;
1248                 return 0;
1249         }
1250
1251         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1252                                      QETH_PROT_IPV6);
1253         if (!iob)
1254                 return -ENOMEM;
1255         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1256         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1257                         card->info.unique_id;
1258
1259         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1260         return rc;
1261 }
1262
1263 static int
1264 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1265                             unsigned long data)
1266 {
1267         struct qeth_ipa_cmd        *cmd;
1268         __u16 rc;
1269
1270         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1271
1272         cmd = (struct qeth_ipa_cmd *)data;
1273         rc = cmd->hdr.return_code;
1274         if (rc)
1275                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1276         switch (cmd->data.diagass.action) {
1277         case QETH_DIAGS_CMD_TRACE_QUERY:
1278                 break;
1279         case QETH_DIAGS_CMD_TRACE_DISABLE:
1280                 switch (rc) {
1281                 case 0:
1282                 case IPA_RC_INVALID_SUBCMD:
1283                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1284                         dev_info(&card->gdev->dev, "The HiperSockets network "
1285                                 "traffic analyzer is deactivated\n");
1286                         break;
1287                 default:
1288                         break;
1289                 }
1290                 break;
1291         case QETH_DIAGS_CMD_TRACE_ENABLE:
1292                 switch (rc) {
1293                 case 0:
1294                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1295                         dev_info(&card->gdev->dev, "The HiperSockets network "
1296                                 "traffic analyzer is activated\n");
1297                         break;
1298                 case IPA_RC_HARDWARE_AUTH_ERROR:
1299                         dev_warn(&card->gdev->dev, "The device is not "
1300                                 "authorized to run as a HiperSockets network "
1301                                 "traffic analyzer\n");
1302                         break;
1303                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1304                         dev_warn(&card->gdev->dev, "A HiperSockets "
1305                                 "network traffic analyzer is already "
1306                                 "active in the HiperSockets LAN\n");
1307                         break;
1308                 default:
1309                         break;
1310                 }
1311                 break;
1312         default:
1313                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1314                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1315         }
1316
1317         return 0;
1318 }
1319
1320 static int
1321 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1322 {
1323         struct qeth_cmd_buffer *iob;
1324         struct qeth_ipa_cmd    *cmd;
1325
1326         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1327
1328         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1329         if (!iob)
1330                 return -ENOMEM;
1331         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1332         cmd->data.diagass.subcmd_len = 16;
1333         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1334         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1335         cmd->data.diagass.action = diags_cmd;
1336         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1337 }
1338
1339 static void qeth_l3_get_mac_for_ipm(__be32 ipm, char *mac)
1340 {
1341         ip_eth_mc_map(ipm, mac);
1342 }
1343
1344 static void qeth_l3_mark_all_mc_to_be_deleted(struct qeth_card *card)
1345 {
1346         struct qeth_ipaddr *addr;
1347         int i;
1348
1349         hash_for_each(card->ip_mc_htable, i, addr, hnode)
1350                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1351
1352 }
1353
1354 static void qeth_l3_add_all_new_mc(struct qeth_card *card)
1355 {
1356         struct qeth_ipaddr *addr;
1357         struct hlist_node *tmp;
1358         int i;
1359         int rc;
1360
1361         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1362                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
1363                         rc = qeth_l3_register_addr_entry(card, addr);
1364                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
1365                                 addr->ref_counter = 1;
1366                         else {
1367                                 hash_del(&addr->hnode);
1368                                 kfree(addr);
1369                         }
1370                 }
1371         }
1372
1373 }
1374
1375 static void qeth_l3_delete_nonused_mc(struct qeth_card *card)
1376 {
1377         struct qeth_ipaddr *addr;
1378         struct hlist_node *tmp;
1379         int i;
1380         int rc;
1381
1382         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1383                 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
1384                         rc = qeth_l3_deregister_addr_entry(card, addr);
1385                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) {
1386                                 hash_del(&addr->hnode);
1387                                 kfree(addr);
1388                         }
1389                 }
1390         }
1391
1392 }
1393
1394
1395 static void
1396 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1397 {
1398         struct ip_mc_list *im4;
1399         struct qeth_ipaddr *tmp, *ipm;
1400         char buf[MAX_ADDR_LEN];
1401
1402         QETH_CARD_TEXT(card, 4, "addmc");
1403
1404         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1405                 if (!tmp)
1406                         return;
1407
1408         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1409              im4 = rcu_dereference(im4->next_rcu)) {
1410                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf);
1411
1412                 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1413                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1414
1415                 ipm = qeth_l3_ip_from_hash(card, tmp);
1416                 if (ipm) {
1417                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1418                 } else {
1419                         ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1420                         if (!ipm)
1421                                 continue;
1422                         memcpy(ipm->mac, buf, sizeof(tmp->mac));
1423                         ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1424                         ipm->is_multicast = 1;
1425                         ipm->disp_flag = QETH_DISP_ADDR_ADD;
1426                         hash_add(card->ip_mc_htable,
1427                                         &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1428                 }
1429         }
1430
1431         kfree(tmp);
1432 }
1433
1434 /* called with rcu_read_lock */
1435 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1436 {
1437         struct in_device *in_dev;
1438         u16 vid;
1439
1440         QETH_CARD_TEXT(card, 4, "addmcvl");
1441
1442         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1443                 return;
1444
1445         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1446                 struct net_device *netdev;
1447
1448                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1449                                               vid);
1450                 if (netdev == NULL ||
1451                     !(netdev->flags & IFF_UP))
1452                         continue;
1453                 in_dev = __in_dev_get_rcu(netdev);
1454                 if (!in_dev)
1455                         continue;
1456                 qeth_l3_add_mc_to_hash(card, in_dev);
1457         }
1458 }
1459
1460 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1461 {
1462         struct in_device *in4_dev;
1463
1464         QETH_CARD_TEXT(card, 4, "chkmcv4");
1465
1466         rcu_read_lock();
1467         in4_dev = __in_dev_get_rcu(card->dev);
1468         if (in4_dev == NULL)
1469                 goto unlock;
1470         qeth_l3_add_mc_to_hash(card, in4_dev);
1471         qeth_l3_add_vlan_mc(card);
1472 unlock:
1473         rcu_read_unlock();
1474 }
1475
1476 #ifdef CONFIG_QETH_IPV6
1477 static void
1478 qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev)
1479 {
1480         struct qeth_ipaddr *ipm;
1481         struct ifmcaddr6 *im6;
1482         struct qeth_ipaddr *tmp;
1483         char buf[MAX_ADDR_LEN];
1484
1485         QETH_CARD_TEXT(card, 4, "addmc6");
1486
1487         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1488                 if (!tmp)
1489                         return;
1490
1491         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1492                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1493
1494                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1495                 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1496                        sizeof(struct in6_addr));
1497                 tmp->is_multicast = 1;
1498
1499                 ipm = qeth_l3_ip_from_hash(card, tmp);
1500                 if (ipm) {
1501                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1502                         continue;
1503                 }
1504
1505                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1506                 if (!ipm)
1507                         continue;
1508
1509                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1510                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1511                        sizeof(struct in6_addr));
1512                 ipm->is_multicast = 1;
1513                 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1514                 hash_add(card->ip_mc_htable,
1515                                 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1516
1517         }
1518         kfree(tmp);
1519 }
1520
1521 /* called with rcu_read_lock */
1522 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1523 {
1524         struct inet6_dev *in_dev;
1525         u16 vid;
1526
1527         QETH_CARD_TEXT(card, 4, "admc6vl");
1528
1529         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1530                 return;
1531
1532         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1533                 struct net_device *netdev;
1534
1535                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1536                                               vid);
1537                 if (netdev == NULL ||
1538                     !(netdev->flags & IFF_UP))
1539                         continue;
1540                 in_dev = in6_dev_get(netdev);
1541                 if (!in_dev)
1542                         continue;
1543                 read_lock_bh(&in_dev->lock);
1544                 qeth_l3_add_mc6_to_hash(card, in_dev);
1545                 read_unlock_bh(&in_dev->lock);
1546                 in6_dev_put(in_dev);
1547         }
1548 }
1549
1550 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1551 {
1552         struct inet6_dev *in6_dev;
1553
1554         QETH_CARD_TEXT(card, 4, "chkmcv6");
1555
1556         if (!qeth_is_supported(card, IPA_IPV6))
1557                 return ;
1558         in6_dev = in6_dev_get(card->dev);
1559         if (!in6_dev)
1560                 return;
1561
1562         rcu_read_lock();
1563         read_lock_bh(&in6_dev->lock);
1564         qeth_l3_add_mc6_to_hash(card, in6_dev);
1565         qeth_l3_add_vlan_mc6(card);
1566         read_unlock_bh(&in6_dev->lock);
1567         rcu_read_unlock();
1568         in6_dev_put(in6_dev);
1569 }
1570 #endif /* CONFIG_QETH_IPV6 */
1571
1572 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1573                         unsigned short vid)
1574 {
1575         struct in_device *in_dev;
1576         struct in_ifaddr *ifa;
1577         struct qeth_ipaddr *addr;
1578         struct net_device *netdev;
1579
1580         QETH_CARD_TEXT(card, 4, "frvaddr4");
1581
1582         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1583         if (!netdev)
1584                 return;
1585         in_dev = in_dev_get(netdev);
1586         if (!in_dev)
1587                 return;
1588
1589         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1590         if (!addr)
1591                 return;
1592
1593         spin_lock_bh(&card->ip_lock);
1594
1595         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1596                 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address);
1597                 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask);
1598                 addr->type = QETH_IP_TYPE_NORMAL;
1599                 qeth_l3_delete_ip(card, addr);
1600         }
1601
1602         spin_unlock_bh(&card->ip_lock);
1603
1604         kfree(addr);
1605         in_dev_put(in_dev);
1606 }
1607
1608 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1609                         unsigned short vid)
1610 {
1611 #ifdef CONFIG_QETH_IPV6
1612         struct inet6_dev *in6_dev;
1613         struct inet6_ifaddr *ifa;
1614         struct qeth_ipaddr *addr;
1615         struct net_device *netdev;
1616
1617         QETH_CARD_TEXT(card, 4, "frvaddr6");
1618
1619         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1620         if (!netdev)
1621                 return;
1622
1623         in6_dev = in6_dev_get(netdev);
1624         if (!in6_dev)
1625                 return;
1626
1627         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1628         if (!addr)
1629                 return;
1630
1631         spin_lock_bh(&card->ip_lock);
1632
1633         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1634                 memcpy(&addr->u.a6.addr, &ifa->addr,
1635                        sizeof(struct in6_addr));
1636                 addr->u.a6.pfxlen = ifa->prefix_len;
1637                 addr->type = QETH_IP_TYPE_NORMAL;
1638                 qeth_l3_delete_ip(card, addr);
1639         }
1640
1641         spin_unlock_bh(&card->ip_lock);
1642
1643         kfree(addr);
1644         in6_dev_put(in6_dev);
1645 #endif /* CONFIG_QETH_IPV6 */
1646 }
1647
1648 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1649                         unsigned short vid)
1650 {
1651         rcu_read_lock();
1652         qeth_l3_free_vlan_addresses4(card, vid);
1653         qeth_l3_free_vlan_addresses6(card, vid);
1654         rcu_read_unlock();
1655 }
1656
1657 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1658                                    __be16 proto, u16 vid)
1659 {
1660         struct qeth_card *card = dev->ml_priv;
1661
1662         set_bit(vid, card->active_vlans);
1663         return 0;
1664 }
1665
1666 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1667                                     __be16 proto, u16 vid)
1668 {
1669         struct qeth_card *card = dev->ml_priv;
1670
1671         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1672
1673         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1674                 QETH_CARD_TEXT(card, 3, "kidREC");
1675                 return 0;
1676         }
1677         /* unregister IP addresses of vlan device */
1678         qeth_l3_free_vlan_addresses(card, vid);
1679         clear_bit(vid, card->active_vlans);
1680         qeth_l3_set_multicast_list(card->dev);
1681         return 0;
1682 }
1683
1684 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1685                         struct sk_buff *skb, struct qeth_hdr *hdr,
1686                         unsigned short *vlan_id)
1687 {
1688         __u16 prot;
1689         struct iphdr *ip_hdr;
1690         unsigned char tg_addr[MAX_ADDR_LEN];
1691         int is_vlan = 0;
1692
1693         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1694                 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1695                               ETH_P_IP;
1696                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1697                 case QETH_CAST_MULTICAST:
1698                         switch (prot) {
1699 #ifdef CONFIG_QETH_IPV6
1700                         case ETH_P_IPV6:
1701                                 ndisc_mc_map((struct in6_addr *)
1702                                      skb->data + 24,
1703                                      tg_addr, card->dev, 0);
1704                                 break;
1705 #endif
1706                         case ETH_P_IP:
1707                                 ip_hdr = (struct iphdr *)skb->data;
1708                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1709                                 break;
1710                         default:
1711                                 memcpy(tg_addr, card->dev->broadcast,
1712                                         card->dev->addr_len);
1713                         }
1714                         card->stats.multicast++;
1715                         skb->pkt_type = PACKET_MULTICAST;
1716                         break;
1717                 case QETH_CAST_BROADCAST:
1718                         memcpy(tg_addr, card->dev->broadcast,
1719                                 card->dev->addr_len);
1720                         card->stats.multicast++;
1721                         skb->pkt_type = PACKET_BROADCAST;
1722                         break;
1723                 case QETH_CAST_UNICAST:
1724                 case QETH_CAST_ANYCAST:
1725                 case QETH_CAST_NOCAST:
1726                 default:
1727                         if (card->options.sniffer)
1728                                 skb->pkt_type = PACKET_OTHERHOST;
1729                         else
1730                                 skb->pkt_type = PACKET_HOST;
1731                         memcpy(tg_addr, card->dev->dev_addr,
1732                                 card->dev->addr_len);
1733                 }
1734                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1735                         card->dev->header_ops->create(skb, card->dev, prot,
1736                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1737                                 card->dev->addr_len);
1738                 else
1739                         card->dev->header_ops->create(skb, card->dev, prot,
1740                                 tg_addr, "FAKELL", card->dev->addr_len);
1741         }
1742
1743         skb->protocol = eth_type_trans(skb, card->dev);
1744
1745         if (hdr->hdr.l3.ext_flags &
1746             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1747                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1748                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1749                 is_vlan = 1;
1750         }
1751
1752         if (card->dev->features & NETIF_F_RXCSUM) {
1753                 if ((hdr->hdr.l3.ext_flags &
1754                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1755                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1756                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1757                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1758                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1759                 else
1760                         skb->ip_summed = CHECKSUM_NONE;
1761         } else
1762                 skb->ip_summed = CHECKSUM_NONE;
1763         return is_vlan;
1764 }
1765
1766 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1767                                 int budget, int *done)
1768 {
1769         int work_done = 0;
1770         struct sk_buff *skb;
1771         struct qeth_hdr *hdr;
1772         __u16 vlan_tag = 0;
1773         int is_vlan;
1774         unsigned int len;
1775         __u16 magic;
1776
1777         *done = 0;
1778         WARN_ON_ONCE(!budget);
1779         while (budget) {
1780                 skb = qeth_core_get_next_skb(card,
1781                         &card->qdio.in_q->bufs[card->rx.b_index],
1782                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1783                 if (!skb) {
1784                         *done = 1;
1785                         break;
1786                 }
1787                 skb->dev = card->dev;
1788                 switch (hdr->hdr.l3.id) {
1789                 case QETH_HEADER_TYPE_LAYER3:
1790                         magic = *(__u16 *)skb->data;
1791                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1792                             (magic == ETH_P_AF_IUCV)) {
1793                                 skb->protocol = cpu_to_be16(ETH_P_AF_IUCV);
1794                                 skb->pkt_type = PACKET_HOST;
1795                                 skb->mac_header = NET_SKB_PAD;
1796                                 skb->dev = card->dev;
1797                                 len = skb->len;
1798                                 card->dev->header_ops->create(skb, card->dev, 0,
1799                                         card->dev->dev_addr, "FAKELL",
1800                                         card->dev->addr_len);
1801                                 netif_receive_skb(skb);
1802                         } else {
1803                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1804                                                       &vlan_tag);
1805                                 len = skb->len;
1806                                 if (is_vlan && !card->options.sniffer)
1807                                         __vlan_hwaccel_put_tag(skb,
1808                                                 htons(ETH_P_8021Q), vlan_tag);
1809                                 napi_gro_receive(&card->napi, skb);
1810                         }
1811                         break;
1812                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1813                         skb->pkt_type = PACKET_HOST;
1814                         skb->protocol = eth_type_trans(skb, skb->dev);
1815                         len = skb->len;
1816                         netif_receive_skb(skb);
1817                         break;
1818                 default:
1819                         dev_kfree_skb_any(skb);
1820                         QETH_CARD_TEXT(card, 3, "inbunkno");
1821                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1822                         continue;
1823                 }
1824                 work_done++;
1825                 budget--;
1826                 card->stats.rx_packets++;
1827                 card->stats.rx_bytes += len;
1828         }
1829         return work_done;
1830 }
1831
1832 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1833                         struct qeth_card *card)
1834 {
1835         int rc = 0;
1836         u16 vid;
1837
1838         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1839                 struct net_device *netdev;
1840
1841                 rcu_read_lock();
1842                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1843                                               vid);
1844                 rcu_read_unlock();
1845                 if (netdev == dev) {
1846                         rc = QETH_VLAN_CARD;
1847                         break;
1848                 }
1849         }
1850
1851         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
1852                 return 0;
1853
1854         return rc;
1855 }
1856
1857 static int qeth_l3_verify_dev(struct net_device *dev)
1858 {
1859         struct qeth_card *card;
1860         int rc = 0;
1861         unsigned long flags;
1862
1863         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
1864         list_for_each_entry(card, &qeth_core_card_list.list, list) {
1865                 if (card->dev == dev) {
1866                         rc = QETH_REAL_CARD;
1867                         break;
1868                 }
1869                 rc = qeth_l3_verify_vlan_dev(dev, card);
1870                 if (rc)
1871                         break;
1872         }
1873         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
1874
1875         return rc;
1876 }
1877
1878 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
1879 {
1880         struct qeth_card *card = NULL;
1881         int rc;
1882
1883         rc = qeth_l3_verify_dev(dev);
1884         if (rc == QETH_REAL_CARD)
1885                 card = dev->ml_priv;
1886         else if (rc == QETH_VLAN_CARD)
1887                 card = vlan_dev_real_dev(dev)->ml_priv;
1888         if (card && card->options.layer2)
1889                 card = NULL;
1890         if (card)
1891                 QETH_CARD_TEXT_(card, 4, "%d", rc);
1892         return card ;
1893 }
1894
1895 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1896 {
1897         QETH_DBF_TEXT(SETUP, 2, "stopcard");
1898         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1899
1900         qeth_set_allowed_threads(card, 0, 1);
1901         if (card->options.sniffer &&
1902             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1903                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1904         if (card->read.state == CH_STATE_UP &&
1905             card->write.state == CH_STATE_UP &&
1906             (card->state == CARD_STATE_UP)) {
1907                 if (recovery_mode)
1908                         qeth_l3_stop(card->dev);
1909                 else {
1910                         rtnl_lock();
1911                         dev_close(card->dev);
1912                         rtnl_unlock();
1913                 }
1914                 card->state = CARD_STATE_SOFTSETUP;
1915         }
1916         if (card->state == CARD_STATE_SOFTSETUP) {
1917                 qeth_l3_clear_ip_htable(card, 1);
1918                 qeth_clear_ipacmd_list(card);
1919                 card->state = CARD_STATE_HARDSETUP;
1920         }
1921         if (card->state == CARD_STATE_HARDSETUP) {
1922                 qeth_qdio_clear_card(card, 0);
1923                 qeth_clear_qdio_buffers(card);
1924                 qeth_clear_working_pool_list(card);
1925                 card->state = CARD_STATE_DOWN;
1926         }
1927         if (card->state == CARD_STATE_DOWN) {
1928                 qeth_clear_cmd_buffers(&card->read);
1929                 qeth_clear_cmd_buffers(&card->write);
1930         }
1931 }
1932
1933 /*
1934  * test for and Switch promiscuous mode (on or off)
1935  *  either for guestlan or HiperSocket Sniffer
1936  */
1937 static void
1938 qeth_l3_handle_promisc_mode(struct qeth_card *card)
1939 {
1940         struct net_device *dev = card->dev;
1941
1942         if (((dev->flags & IFF_PROMISC) &&
1943              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1944             (!(dev->flags & IFF_PROMISC) &&
1945              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1946                 return;
1947
1948         if (card->info.guestlan) {              /* Guestlan trace */
1949                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1950                         qeth_setadp_promisc_mode(card);
1951         } else if (card->options.sniffer &&     /* HiperSockets trace */
1952                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1953                 if (dev->flags & IFF_PROMISC) {
1954                         QETH_CARD_TEXT(card, 3, "+promisc");
1955                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1956                 } else {
1957                         QETH_CARD_TEXT(card, 3, "-promisc");
1958                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1959                 }
1960         }
1961 }
1962
1963 static void qeth_l3_set_multicast_list(struct net_device *dev)
1964 {
1965         struct qeth_card *card = dev->ml_priv;
1966
1967         QETH_CARD_TEXT(card, 3, "setmulti");
1968         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
1969             (card->state != CARD_STATE_UP))
1970                 return;
1971         if (!card->options.sniffer) {
1972
1973                 spin_lock_bh(&card->mclock);
1974
1975                 qeth_l3_mark_all_mc_to_be_deleted(card);
1976
1977                 qeth_l3_add_multicast_ipv4(card);
1978 #ifdef CONFIG_QETH_IPV6
1979                 qeth_l3_add_multicast_ipv6(card);
1980 #endif
1981                 qeth_l3_delete_nonused_mc(card);
1982                 qeth_l3_add_all_new_mc(card);
1983
1984                 spin_unlock_bh(&card->mclock);
1985
1986                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1987                         return;
1988         }
1989         qeth_l3_handle_promisc_mode(card);
1990 }
1991
1992 static const char *qeth_l3_arp_get_error_cause(int *rc)
1993 {
1994         switch (*rc) {
1995         case QETH_IPA_ARP_RC_FAILED:
1996                 *rc = -EIO;
1997                 return "operation failed";
1998         case QETH_IPA_ARP_RC_NOTSUPP:
1999                 *rc = -EOPNOTSUPP;
2000                 return "operation not supported";
2001         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2002                 *rc = -EINVAL;
2003                 return "argument out of range";
2004         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2005                 *rc = -EOPNOTSUPP;
2006                 return "query operation not supported";
2007         case QETH_IPA_ARP_RC_Q_NO_DATA:
2008                 *rc = -ENOENT;
2009                 return "no query data available";
2010         default:
2011                 return "unknown error";
2012         }
2013 }
2014
2015 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2016 {
2017         int tmp;
2018         int rc;
2019
2020         QETH_CARD_TEXT(card, 3, "arpstnoe");
2021
2022         /*
2023          * currently GuestLAN only supports the ARP assist function
2024          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2025          * thus we say EOPNOTSUPP for this ARP function
2026          */
2027         if (card->info.guestlan)
2028                 return -EOPNOTSUPP;
2029         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2030                 return -EOPNOTSUPP;
2031         }
2032         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2033                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2034                                           no_entries);
2035         if (rc) {
2036                 tmp = rc;
2037                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2038                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2039                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2040         }
2041         return rc;
2042 }
2043
2044 static __u32 get_arp_entry_size(struct qeth_card *card,
2045                         struct qeth_arp_query_data *qdata,
2046                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2047 {
2048         __u32 rc;
2049         __u8 is_hsi;
2050
2051         is_hsi = qdata->reply_bits == 5;
2052         if (type->ip == QETHARP_IP_ADDR_V4) {
2053                 QETH_CARD_TEXT(card, 4, "arpev4");
2054                 if (strip_entries) {
2055                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2056                                 sizeof(struct qeth_arp_qi_entry7_short);
2057                 } else {
2058                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2059                                 sizeof(struct qeth_arp_qi_entry7);
2060                 }
2061         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2062                 QETH_CARD_TEXT(card, 4, "arpev6");
2063                 if (strip_entries) {
2064                         rc = is_hsi ?
2065                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2066                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2067                 } else {
2068                         rc = is_hsi ?
2069                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2070                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2071                 }
2072         } else {
2073                 QETH_CARD_TEXT(card, 4, "arpinv");
2074                 rc = 0;
2075         }
2076
2077         return rc;
2078 }
2079
2080 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2081 {
2082         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2083                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2084 }
2085
2086 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2087                 struct qeth_reply *reply, unsigned long data)
2088 {
2089         struct qeth_ipa_cmd *cmd;
2090         struct qeth_arp_query_data *qdata;
2091         struct qeth_arp_query_info *qinfo;
2092         int i;
2093         int e;
2094         int entrybytes_done;
2095         int stripped_bytes;
2096         __u8 do_strip_entries;
2097
2098         QETH_CARD_TEXT(card, 3, "arpquecb");
2099
2100         qinfo = (struct qeth_arp_query_info *) reply->param;
2101         cmd = (struct qeth_ipa_cmd *) data;
2102         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2103         if (cmd->hdr.return_code) {
2104                 QETH_CARD_TEXT(card, 4, "arpcberr");
2105                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2106                 return 0;
2107         }
2108         if (cmd->data.setassparms.hdr.return_code) {
2109                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2110                 QETH_CARD_TEXT(card, 4, "setaperr");
2111                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2112                 return 0;
2113         }
2114         qdata = &cmd->data.setassparms.data.query_arp;
2115         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2116
2117         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2118         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2119         entrybytes_done = 0;
2120         for (e = 0; e < qdata->no_entries; ++e) {
2121                 char *cur_entry;
2122                 __u32 esize;
2123                 struct qeth_arp_entrytype *etype;
2124
2125                 cur_entry = &qdata->data + entrybytes_done;
2126                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2127                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2128                         QETH_CARD_TEXT(card, 4, "pmis");
2129                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2130                         break;
2131                 }
2132                 esize = get_arp_entry_size(card, qdata, etype,
2133                         do_strip_entries);
2134                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2135                 if (!esize)
2136                         break;
2137
2138                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2139                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2140                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2141                         goto out_error;
2142                 }
2143
2144                 memcpy(qinfo->udata + qinfo->udata_offset,
2145                         &qdata->data + entrybytes_done + stripped_bytes,
2146                         esize);
2147                 entrybytes_done += esize + stripped_bytes;
2148                 qinfo->udata_offset += esize;
2149                 ++qinfo->no_entries;
2150         }
2151         /* check if all replies received ... */
2152         if (cmd->data.setassparms.hdr.seq_no <
2153             cmd->data.setassparms.hdr.number_of_replies)
2154                 return 1;
2155         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2156         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2157         /* keep STRIP_ENTRIES flag so the user program can distinguish
2158          * stripped entries from normal ones */
2159         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2160                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2161         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2162         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2163         return 0;
2164 out_error:
2165         i = 0;
2166         memcpy(qinfo->udata, &i, 4);
2167         return 0;
2168 }
2169
2170 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2171                 struct qeth_cmd_buffer *iob, int len,
2172                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2173                         unsigned long),
2174                 void *reply_param)
2175 {
2176         QETH_CARD_TEXT(card, 4, "sendarp");
2177
2178         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2179         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2180                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2181         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2182                                       reply_cb, reply_param);
2183 }
2184
2185 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2186         enum qeth_prot_versions prot,
2187         struct qeth_arp_query_info *qinfo)
2188 {
2189         struct qeth_cmd_buffer *iob;
2190         struct qeth_ipa_cmd *cmd;
2191         int tmp;
2192         int rc;
2193
2194         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2195
2196         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2197                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2198                                        sizeof(struct qeth_arp_query_data)
2199                                                 - sizeof(char),
2200                                        prot);
2201         if (!iob)
2202                 return -ENOMEM;
2203         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2204         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2205         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2206         cmd->data.setassparms.data.query_arp.no_entries = 0;
2207         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2208                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2209                            qeth_l3_arp_query_cb, (void *)qinfo);
2210         if (rc) {
2211                 tmp = rc;
2212                 QETH_DBF_MESSAGE(2,
2213                         "Error while querying ARP cache on %s: %s "
2214                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2215                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2216         }
2217
2218         return rc;
2219 }
2220
2221 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2222 {
2223         struct qeth_arp_query_info qinfo = {0, };
2224         int rc;
2225
2226         QETH_CARD_TEXT(card, 3, "arpquery");
2227
2228         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2229                                IPA_ARP_PROCESSING)) {
2230                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2231                 rc = -EOPNOTSUPP;
2232                 goto out;
2233         }
2234         /* get size of userspace buffer and mask_bits -> 6 bytes */
2235         if (copy_from_user(&qinfo, udata, 6)) {
2236                 rc = -EFAULT;
2237                 goto out;
2238         }
2239         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2240         if (!qinfo.udata) {
2241                 rc = -ENOMEM;
2242                 goto out;
2243         }
2244         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2245         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2246         if (rc) {
2247                 if (copy_to_user(udata, qinfo.udata, 4))
2248                         rc = -EFAULT;
2249                 goto free_and_out;
2250         }
2251 #ifdef CONFIG_QETH_IPV6
2252         if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2253                 /* fails in case of GuestLAN QDIO mode */
2254                 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
2255         }
2256 #endif
2257         if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2258                 QETH_CARD_TEXT(card, 4, "qactf");
2259                 rc = -EFAULT;
2260                 goto free_and_out;
2261         }
2262         QETH_CARD_TEXT(card, 4, "qacts");
2263
2264 free_and_out:
2265         kfree(qinfo.udata);
2266 out:
2267         return rc;
2268 }
2269
2270 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2271                                 struct qeth_arp_cache_entry *entry)
2272 {
2273         struct qeth_cmd_buffer *iob;
2274         char buf[16];
2275         int tmp;
2276         int rc;
2277
2278         QETH_CARD_TEXT(card, 3, "arpadent");
2279
2280         /*
2281          * currently GuestLAN only supports the ARP assist function
2282          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2283          * thus we say EOPNOTSUPP for this ARP function
2284          */
2285         if (card->info.guestlan)
2286                 return -EOPNOTSUPP;
2287         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2288                 return -EOPNOTSUPP;
2289         }
2290
2291         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2292                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2293                                        sizeof(struct qeth_arp_cache_entry),
2294                                        QETH_PROT_IPV4);
2295         if (!iob)
2296                 return -ENOMEM;
2297         rc = qeth_send_setassparms(card, iob,
2298                                    sizeof(struct qeth_arp_cache_entry),
2299                                    (unsigned long) entry,
2300                                    qeth_setassparms_cb, NULL);
2301         if (rc) {
2302                 tmp = rc;
2303                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2304                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2305                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2306                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2307         }
2308         return rc;
2309 }
2310
2311 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2312                                 struct qeth_arp_cache_entry *entry)
2313 {
2314         struct qeth_cmd_buffer *iob;
2315         char buf[16] = {0, };
2316         int tmp;
2317         int rc;
2318
2319         QETH_CARD_TEXT(card, 3, "arprment");
2320
2321         /*
2322          * currently GuestLAN only supports the ARP assist function
2323          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2324          * thus we say EOPNOTSUPP for this ARP function
2325          */
2326         if (card->info.guestlan)
2327                 return -EOPNOTSUPP;
2328         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2329                 return -EOPNOTSUPP;
2330         }
2331         memcpy(buf, entry, 12);
2332         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2333                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2334                                        12,
2335                                        QETH_PROT_IPV4);
2336         if (!iob)
2337                 return -ENOMEM;
2338         rc = qeth_send_setassparms(card, iob,
2339                                    12, (unsigned long)buf,
2340                                    qeth_setassparms_cb, NULL);
2341         if (rc) {
2342                 tmp = rc;
2343                 memset(buf, 0, 16);
2344                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2345                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2346                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2347                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2348         }
2349         return rc;
2350 }
2351
2352 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2353 {
2354         int rc;
2355         int tmp;
2356
2357         QETH_CARD_TEXT(card, 3, "arpflush");
2358
2359         /*
2360          * currently GuestLAN only supports the ARP assist function
2361          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2362          * thus we say EOPNOTSUPP for this ARP function
2363         */
2364         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2365                 return -EOPNOTSUPP;
2366         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2367                 return -EOPNOTSUPP;
2368         }
2369         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2370                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2371         if (rc) {
2372                 tmp = rc;
2373                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2374                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2375                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2376         }
2377         return rc;
2378 }
2379
2380 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2381 {
2382         struct qeth_card *card = dev->ml_priv;
2383         struct qeth_arp_cache_entry arp_entry;
2384         int rc = 0;
2385
2386         switch (cmd) {
2387         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2388                 if (!capable(CAP_NET_ADMIN)) {
2389                         rc = -EPERM;
2390                         break;
2391                 }
2392                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2393                 break;
2394         case SIOC_QETH_ARP_QUERY_INFO:
2395                 if (!capable(CAP_NET_ADMIN)) {
2396                         rc = -EPERM;
2397                         break;
2398                 }
2399                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2400                 break;
2401         case SIOC_QETH_ARP_ADD_ENTRY:
2402                 if (!capable(CAP_NET_ADMIN)) {
2403                         rc = -EPERM;
2404                         break;
2405                 }
2406                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2407                                    sizeof(struct qeth_arp_cache_entry)))
2408                         rc = -EFAULT;
2409                 else
2410                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2411                 break;
2412         case SIOC_QETH_ARP_REMOVE_ENTRY:
2413                 if (!capable(CAP_NET_ADMIN)) {
2414                         rc = -EPERM;
2415                         break;
2416                 }
2417                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2418                                    sizeof(struct qeth_arp_cache_entry)))
2419                         rc = -EFAULT;
2420                 else
2421                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2422                 break;
2423         case SIOC_QETH_ARP_FLUSH_CACHE:
2424                 if (!capable(CAP_NET_ADMIN)) {
2425                         rc = -EPERM;
2426                         break;
2427                 }
2428                 rc = qeth_l3_arp_flush_cache(card);
2429                 break;
2430         default:
2431                 rc = -EOPNOTSUPP;
2432         }
2433         return rc;
2434 }
2435
2436 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2437 {
2438         int cast_type = RTN_UNSPEC;
2439         struct neighbour *n = NULL;
2440         struct dst_entry *dst;
2441
2442         rcu_read_lock();
2443         dst = skb_dst(skb);
2444         if (dst)
2445                 n = dst_neigh_lookup_skb(dst, skb);
2446         if (n) {
2447                 cast_type = n->type;
2448                 rcu_read_unlock();
2449                 neigh_release(n);
2450                 if ((cast_type == RTN_BROADCAST) ||
2451                     (cast_type == RTN_MULTICAST) ||
2452                     (cast_type == RTN_ANYCAST))
2453                         return cast_type;
2454                 else
2455                         return RTN_UNSPEC;
2456         }
2457         rcu_read_unlock();
2458
2459         /* try something else */
2460         if (be16_to_cpu(skb->protocol) == ETH_P_IPV6)
2461                 return (skb_network_header(skb)[24] == 0xff) ?
2462                                 RTN_MULTICAST : 0;
2463         else if (be16_to_cpu(skb->protocol) == ETH_P_IP)
2464                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2465                                 RTN_MULTICAST : 0;
2466         /* ... */
2467         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2468                 return RTN_BROADCAST;
2469         else {
2470                 u16 hdr_mac;
2471
2472                 hdr_mac = *((u16 *)skb->data);
2473                 /* tr multicast? */
2474                 switch (card->info.link_type) {
2475                 case QETH_LINK_TYPE_HSTR:
2476                 case QETH_LINK_TYPE_LANE_TR:
2477                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2478                             (hdr_mac == QETH_TR_MAC_C))
2479                                 return RTN_MULTICAST;
2480                         break;
2481                 /* eth or so multicast? */
2482                 default:
2483                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2484                             (hdr_mac == QETH_ETH_MAC_V6))
2485                                 return RTN_MULTICAST;
2486                 }
2487         }
2488         return cast_type;
2489 }
2490
2491 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2492                 struct qeth_hdr *hdr, struct sk_buff *skb)
2493 {
2494         char daddr[16];
2495         struct af_iucv_trans_hdr *iucv_hdr;
2496
2497         memset(hdr, 0, sizeof(struct qeth_hdr));
2498         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2499         hdr->hdr.l3.ext_flags = 0;
2500         hdr->hdr.l3.length = skb->len - ETH_HLEN;
2501         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2502
2503         iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN);
2504         memset(daddr, 0, sizeof(daddr));
2505         daddr[0] = 0xfe;
2506         daddr[1] = 0x80;
2507         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2508         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2509 }
2510
2511 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2512                 struct sk_buff *skb, int ipv, int cast_type)
2513 {
2514         struct dst_entry *dst;
2515
2516         memset(hdr, 0, sizeof(struct qeth_hdr));
2517         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2518         hdr->hdr.l3.ext_flags = 0;
2519
2520         /*
2521          * before we're going to overwrite this location with next hop ip.
2522          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2523          */
2524         if (skb_vlan_tag_present(skb)) {
2525                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2526                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2527                 else
2528                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2529                 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2530         }
2531
2532         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2533
2534         rcu_read_lock();
2535         dst = skb_dst(skb);
2536         if (ipv == 4) {
2537                 struct rtable *rt = (struct rtable *) dst;
2538                 __be32 *pkey = &ip_hdr(skb)->daddr;
2539
2540                 if (rt->rt_gateway)
2541                         pkey = &rt->rt_gateway;
2542
2543                 /* IPv4 */
2544                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2545                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2546                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2547         } else if (ipv == 6) {
2548                 struct rt6_info *rt = (struct rt6_info *) dst;
2549                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2550
2551                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2552                         pkey = &rt->rt6i_gateway;
2553
2554                 /* IPv6 */
2555                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2556                 if (card->info.type == QETH_CARD_TYPE_IQD)
2557                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2558                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2559         } else {
2560                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2561                             skb->dev->broadcast, 6)) {
2562                         /* broadcast? */
2563                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2564                                                 QETH_HDR_PASSTHRU;
2565                 } else {
2566                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2567                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2568                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2569                 }
2570         }
2571         rcu_read_unlock();
2572 }
2573
2574 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2575                 struct qeth_hdr *hdr, struct sk_buff *skb)
2576 {
2577         struct iphdr *iph = ip_hdr(skb);
2578
2579         /* tcph->check contains already the pseudo hdr checksum
2580          * so just set the header flags
2581          */
2582         if (iph->protocol == IPPROTO_UDP)
2583                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2584         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2585                 QETH_HDR_EXT_CSUM_HDR_REQ;
2586         iph->check = 0;
2587         if (card->options.performance_stats)
2588                 card->perf_stats.tx_csum++;
2589 }
2590
2591 static void qeth_tso_fill_header(struct qeth_card *card,
2592                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2593 {
2594         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2595         struct tcphdr *tcph = tcp_hdr(skb);
2596         struct iphdr *iph = ip_hdr(skb);
2597         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2598
2599         /*fix header to TSO values ...*/
2600         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2601         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2602         /*set values which are fix for the first approach ...*/
2603         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2604         hdr->ext.imb_hdr_no  = 1;
2605         hdr->ext.hdr_type    = 1;
2606         hdr->ext.hdr_version = 1;
2607         hdr->ext.hdr_len     = 28;
2608         /*insert non-fix values */
2609         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2610         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2611         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2612                                        sizeof(struct qeth_hdr_tso));
2613         tcph->check = 0;
2614         if (be16_to_cpu(skb->protocol) == ETH_P_IPV6) {
2615                 ip6h->payload_len = 0;
2616                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2617                                                0, IPPROTO_TCP, 0);
2618         } else {
2619                 /*OSA want us to set these values ...*/
2620                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2621                                          0, IPPROTO_TCP, 0);
2622                 iph->tot_len = 0;
2623                 iph->check = 0;
2624         }
2625 }
2626
2627 /**
2628  * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2629  * @card:                          qeth card structure, to check max. elems.
2630  * @skb:                           SKB address
2631  * @extra_elems:                   extra elems needed, to check against max.
2632  *
2633  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2634  * skb data, including linear part and fragments, but excluding TCP header.
2635  * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2636  * Checks if the result plus extra_elems fits under the limit for the card.
2637  * Returns 0 if it does not.
2638  * Note: extra_elems is not included in the returned result.
2639  */
2640 static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2641                         struct sk_buff *skb, int extra_elems)
2642 {
2643         addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2644         int elements = qeth_get_elements_for_range(
2645                                 tcpdptr,
2646                                 (addr_t)skb->data + skb_headlen(skb)) +
2647                                 qeth_get_elements_for_frags(skb);
2648
2649         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2650                 QETH_DBF_MESSAGE(2,
2651         "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2652                                 elements + extra_elems, skb->len);
2653                 return 0;
2654         }
2655         return elements;
2656 }
2657
2658 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2659                                            struct net_device *dev)
2660 {
2661         int rc;
2662         __be16 *tag;
2663         struct qeth_hdr *hdr = NULL;
2664         int hdr_elements = 0;
2665         int elements;
2666         struct qeth_card *card = dev->ml_priv;
2667         struct sk_buff *new_skb = NULL;
2668         int ipv = qeth_get_ip_version(skb);
2669         int cast_type = qeth_l3_get_cast_type(card, skb);
2670         struct qeth_qdio_out_q *queue =
2671                 card->qdio.out_qs[card->qdio.do_prio_queueing
2672                         || (cast_type && card->info.is_multicast_different) ?
2673                         qeth_get_priority_queue(card, skb, ipv, cast_type) :
2674                         card->qdio.default_out_queue];
2675         int tx_bytes = skb->len;
2676         bool use_tso;
2677         int data_offset = -1;
2678         int nr_frags;
2679
2680         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2681              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2682               ((card->options.cq == QETH_CQ_ENABLED) &&
2683                (be16_to_cpu(skb->protocol) != ETH_P_AF_IUCV)))) ||
2684             card->options.sniffer)
2685                         goto tx_drop;
2686
2687         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2688                 card->stats.tx_carrier_errors++;
2689                 goto tx_drop;
2690         }
2691
2692         if ((cast_type == RTN_BROADCAST) &&
2693             (card->info.broadcast_capable == 0))
2694                 goto tx_drop;
2695
2696         if (card->options.performance_stats) {
2697                 card->perf_stats.outbound_cnt++;
2698                 card->perf_stats.outbound_start_time = qeth_get_micros();
2699         }
2700
2701         /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2702         use_tso = skb_is_gso(skb) &&
2703                   (qeth_get_ip_protocol(skb) == IPPROTO_TCP) && (ipv == 4);
2704
2705         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2706             !skb_is_nonlinear(skb)) {
2707                 new_skb = skb;
2708                 data_offset = ETH_HLEN;
2709                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2710                 if (!hdr)
2711                         goto tx_drop;
2712                 hdr_elements++;
2713         } else {
2714                 /* create a clone with writeable headroom */
2715                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2716                                         + VLAN_HLEN);
2717                 if (!new_skb)
2718                         goto tx_drop;
2719         }
2720
2721         if (card->info.type == QETH_CARD_TYPE_IQD) {
2722                 if (data_offset < 0)
2723                         skb_pull(new_skb, ETH_HLEN);
2724         } else {
2725                 if (ipv == 4) {
2726                         skb_pull(new_skb, ETH_HLEN);
2727                 }
2728
2729                 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2730                         skb_push(new_skb, VLAN_HLEN);
2731                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2732                         skb_copy_to_linear_data_offset(new_skb, 4,
2733                                 new_skb->data + 8, 4);
2734                         skb_copy_to_linear_data_offset(new_skb, 8,
2735                                 new_skb->data + 12, 4);
2736                         tag = (__be16 *)(new_skb->data + 12);
2737                         *tag = cpu_to_be16(ETH_P_8021Q);
2738                         *(tag + 1) = cpu_to_be16(skb_vlan_tag_get(new_skb));
2739                 }
2740         }
2741
2742         netif_stop_queue(dev);
2743
2744         /* fix hardware limitation: as long as we do not have sbal
2745          * chaining we can not send long frag lists
2746          */
2747         if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2748             ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2749              (!use_tso && !qeth_get_elements_no(card, new_skb, 0, 0)))) {
2750                 int lin_rc = skb_linearize(new_skb);
2751
2752                 if (card->options.performance_stats) {
2753                         if (lin_rc)
2754                                 card->perf_stats.tx_linfail++;
2755                         else
2756                                 card->perf_stats.tx_lin++;
2757                 }
2758                 if (lin_rc)
2759                         goto tx_drop;
2760         }
2761
2762         if (use_tso) {
2763                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2764                                                 sizeof(struct qeth_hdr_tso));
2765                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2766                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2767                 qeth_tso_fill_header(card, hdr, new_skb);
2768                 hdr_elements++;
2769         } else {
2770                 if (data_offset < 0) {
2771                         hdr = (struct qeth_hdr *)skb_push(new_skb,
2772                                                 sizeof(struct qeth_hdr));
2773                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2774                                                 cast_type);
2775                 } else {
2776                         if (be16_to_cpu(new_skb->protocol) == ETH_P_AF_IUCV)
2777                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2778                         else {
2779                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2780                                                         cast_type);
2781                                 hdr->hdr.l3.length = new_skb->len - data_offset;
2782                         }
2783                 }
2784
2785                 if (skb->ip_summed == CHECKSUM_PARTIAL)
2786                         qeth_l3_hdr_csum(card, hdr, new_skb);
2787         }
2788
2789         elements = use_tso ?
2790                    qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2791                    qeth_get_elements_no(card, new_skb, hdr_elements,
2792                                         (data_offset > 0) ? data_offset : 0);
2793         if (!elements) {
2794                 if (data_offset >= 0)
2795                         kmem_cache_free(qeth_core_header_cache, hdr);
2796                 goto tx_drop;
2797         }
2798         elements += hdr_elements;
2799
2800         if (card->info.type != QETH_CARD_TYPE_IQD) {
2801                 int len;
2802                 if (use_tso)
2803                         len = ((unsigned long)tcp_hdr(new_skb) +
2804                                 tcp_hdrlen(new_skb)) -
2805                                 (unsigned long)new_skb->data;
2806                 else
2807                         len = sizeof(struct qeth_hdr_layer3);
2808
2809                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2810                         goto tx_drop;
2811                 rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements);
2812         } else
2813                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2814                                               data_offset, 0);
2815
2816         if (!rc) {
2817                 card->stats.tx_packets++;
2818                 card->stats.tx_bytes += tx_bytes;
2819                 if (new_skb != skb)
2820                         dev_kfree_skb_any(skb);
2821                 if (card->options.performance_stats) {
2822                         nr_frags = skb_shinfo(new_skb)->nr_frags;
2823                         if (use_tso) {
2824                                 card->perf_stats.large_send_bytes += tx_bytes;
2825                                 card->perf_stats.large_send_cnt++;
2826                         }
2827                         if (nr_frags) {
2828                                 card->perf_stats.sg_skbs_sent++;
2829                                 /* nr_frags + skb->data */
2830                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
2831                         }
2832                 }
2833                 rc = NETDEV_TX_OK;
2834         } else {
2835                 if (data_offset >= 0)
2836                         kmem_cache_free(qeth_core_header_cache, hdr);
2837
2838                 if (rc == -EBUSY) {
2839                         if (new_skb != skb)
2840                                 dev_kfree_skb_any(new_skb);
2841                         return NETDEV_TX_BUSY;
2842                 } else
2843                         goto tx_drop;
2844         }
2845
2846         netif_wake_queue(dev);
2847         if (card->options.performance_stats)
2848                 card->perf_stats.outbound_time += qeth_get_micros() -
2849                         card->perf_stats.outbound_start_time;
2850         return rc;
2851
2852 tx_drop:
2853         card->stats.tx_dropped++;
2854         card->stats.tx_errors++;
2855         if ((new_skb != skb) && new_skb)
2856                 dev_kfree_skb_any(new_skb);
2857         dev_kfree_skb_any(skb);
2858         netif_wake_queue(dev);
2859         return NETDEV_TX_OK;
2860 }
2861
2862 static int __qeth_l3_open(struct net_device *dev)
2863 {
2864         struct qeth_card *card = dev->ml_priv;
2865         int rc = 0;
2866
2867         QETH_CARD_TEXT(card, 4, "qethopen");
2868         if (card->state == CARD_STATE_UP)
2869                 return rc;
2870         if (card->state != CARD_STATE_SOFTSETUP)
2871                 return -ENODEV;
2872         card->data.state = CH_STATE_UP;
2873         card->state = CARD_STATE_UP;
2874         netif_start_queue(dev);
2875
2876         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2877                 napi_enable(&card->napi);
2878                 napi_schedule(&card->napi);
2879         } else
2880                 rc = -EIO;
2881         return rc;
2882 }
2883
2884 static int qeth_l3_open(struct net_device *dev)
2885 {
2886         struct qeth_card *card = dev->ml_priv;
2887
2888         QETH_CARD_TEXT(card, 5, "qethope_");
2889         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2890                 QETH_CARD_TEXT(card, 3, "openREC");
2891                 return -ERESTARTSYS;
2892         }
2893         return __qeth_l3_open(dev);
2894 }
2895
2896 static int qeth_l3_stop(struct net_device *dev)
2897 {
2898         struct qeth_card *card = dev->ml_priv;
2899
2900         QETH_CARD_TEXT(card, 4, "qethstop");
2901         netif_tx_disable(dev);
2902         if (card->state == CARD_STATE_UP) {
2903                 card->state = CARD_STATE_SOFTSETUP;
2904                 napi_disable(&card->napi);
2905         }
2906         return 0;
2907 }
2908
2909 static const struct ethtool_ops qeth_l3_ethtool_ops = {
2910         .get_link = ethtool_op_get_link,
2911         .get_strings = qeth_core_get_strings,
2912         .get_ethtool_stats = qeth_core_get_ethtool_stats,
2913         .get_sset_count = qeth_core_get_sset_count,
2914         .get_drvinfo = qeth_core_get_drvinfo,
2915         .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
2916 };
2917
2918 /*
2919  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2920  * NOARP on the netdevice is no option because it also turns off neighbor
2921  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2922  * arp resolution but we want the hard header (packet socket will work
2923  * e.g. tcpdump)
2924  */
2925 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2926 {
2927         n->nud_state = NUD_NOARP;
2928         memcpy(n->ha, "FAKELL", 6);
2929         n->output = n->ops->connected_output;
2930         return 0;
2931 }
2932
2933 static int
2934 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2935 {
2936         if (np->tbl->family == AF_INET)
2937                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2938
2939         return 0;
2940 }
2941
2942 static const struct net_device_ops qeth_l3_netdev_ops = {
2943         .ndo_open               = qeth_l3_open,
2944         .ndo_stop               = qeth_l3_stop,
2945         .ndo_get_stats          = qeth_get_stats,
2946         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2947         .ndo_validate_addr      = eth_validate_addr,
2948         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
2949         .ndo_do_ioctl           = qeth_do_ioctl,
2950         .ndo_change_mtu         = qeth_change_mtu,
2951         .ndo_fix_features       = qeth_fix_features,
2952         .ndo_set_features       = qeth_set_features,
2953         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2954         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2955         .ndo_tx_timeout         = qeth_tx_timeout,
2956 };
2957
2958 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2959         .ndo_open               = qeth_l3_open,
2960         .ndo_stop               = qeth_l3_stop,
2961         .ndo_get_stats          = qeth_get_stats,
2962         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2963         .ndo_validate_addr      = eth_validate_addr,
2964         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
2965         .ndo_do_ioctl           = qeth_do_ioctl,
2966         .ndo_change_mtu         = qeth_change_mtu,
2967         .ndo_fix_features       = qeth_fix_features,
2968         .ndo_set_features       = qeth_set_features,
2969         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2970         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2971         .ndo_tx_timeout         = qeth_tx_timeout,
2972         .ndo_neigh_setup        = qeth_l3_neigh_setup,
2973 };
2974
2975 static int qeth_l3_setup_netdev(struct qeth_card *card)
2976 {
2977         int rc;
2978
2979         if (card->info.type == QETH_CARD_TYPE_OSD ||
2980             card->info.type == QETH_CARD_TYPE_OSX) {
2981                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2982                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2983                         pr_info("qeth_l3: ignoring TR device\n");
2984                         return -ENODEV;
2985                 } else {
2986                         card->dev = alloc_etherdev(0);
2987                         if (!card->dev)
2988                                 return -ENODEV;
2989                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2990
2991                         /*IPv6 address autoconfiguration stuff*/
2992                         qeth_l3_get_unique_id(card);
2993                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2994                                 card->dev->dev_id = card->info.unique_id &
2995                                                          0xffff;
2996                         if (!card->info.guestlan) {
2997                                 card->dev->hw_features = NETIF_F_SG |
2998                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
2999                                         NETIF_F_TSO;
3000                                 card->dev->vlan_features = NETIF_F_SG |
3001                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3002                                         NETIF_F_TSO;
3003                         }
3004                 }
3005         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3006                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
3007                                          ether_setup);
3008                 if (!card->dev)
3009                         return -ENODEV;
3010                 card->dev->flags |= IFF_NOARP;
3011                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3012                 rc = qeth_l3_iqd_read_initial_mac(card);
3013                 if (rc)
3014                         return rc;
3015                 if (card->options.hsuid[0])
3016                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3017         } else
3018                 return -ENODEV;
3019
3020         card->dev->ml_priv = card;
3021         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3022         card->dev->mtu = card->info.initial_mtu;
3023         card->dev->min_mtu = 64;
3024         card->dev->max_mtu = ETH_MAX_MTU;
3025         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
3026         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
3027                                 NETIF_F_HW_VLAN_CTAG_RX |
3028                                 NETIF_F_HW_VLAN_CTAG_FILTER;
3029         netif_keep_dst(card->dev);
3030         card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
3031                                   PAGE_SIZE;
3032
3033         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3034         netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
3035         netif_carrier_off(card->dev);
3036         return register_netdev(card->dev);
3037 }
3038
3039 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3040 {
3041         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3042         int rc;
3043
3044         rc = qeth_l3_create_device_attributes(&gdev->dev);
3045         if (rc)
3046                 return rc;
3047         hash_init(card->ip_htable);
3048         hash_init(card->ip_mc_htable);
3049         card->options.layer2 = 0;
3050         card->info.hwtrap = 0;
3051         return 0;
3052 }
3053
3054 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3055 {
3056         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3057
3058         qeth_l3_remove_device_attributes(&cgdev->dev);
3059
3060         qeth_set_allowed_threads(card, 0, 1);
3061         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3062
3063         if (cgdev->state == CCWGROUP_ONLINE)
3064                 qeth_l3_set_offline(cgdev);
3065
3066         if (card->dev) {
3067                 netif_napi_del(&card->napi);
3068                 unregister_netdev(card->dev);
3069                 card->dev = NULL;
3070         }
3071
3072         qeth_l3_clear_ip_htable(card, 0);
3073         qeth_l3_clear_ipato_list(card);
3074         return;
3075 }
3076
3077 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3078 {
3079         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3080         int rc = 0;
3081         enum qeth_card_states recover_flag;
3082
3083         mutex_lock(&card->discipline_mutex);
3084         mutex_lock(&card->conf_mutex);
3085         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3086         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3087
3088         recover_flag = card->state;
3089         rc = qeth_core_hardsetup_card(card);
3090         if (rc) {
3091                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3092                 rc = -ENODEV;
3093                 goto out_remove;
3094         }
3095
3096         if (!card->dev && qeth_l3_setup_netdev(card)) {
3097                 rc = -ENODEV;
3098                 goto out_remove;
3099         }
3100
3101         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3102                 if (card->info.hwtrap &&
3103                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3104                         card->info.hwtrap = 0;
3105         } else
3106                 card->info.hwtrap = 0;
3107
3108         card->state = CARD_STATE_HARDSETUP;
3109         memset(&card->rx, 0, sizeof(struct qeth_rx));
3110         qeth_print_status_message(card);
3111
3112         /* softsetup */
3113         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3114
3115         rc = qeth_l3_setadapter_parms(card);
3116         if (rc)
3117                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3118         if (!card->options.sniffer) {
3119                 rc = qeth_l3_start_ipassists(card);
3120                 if (rc) {
3121                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3122                         goto out_remove;
3123                 }
3124                 rc = qeth_l3_setrouting_v4(card);
3125                 if (rc)
3126                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3127                 rc = qeth_l3_setrouting_v6(card);
3128                 if (rc)
3129                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3130         }
3131         netif_tx_disable(card->dev);
3132
3133         rc = qeth_init_qdio_queues(card);
3134         if (rc) {
3135                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3136                 rc = -ENODEV;
3137                 goto out_remove;
3138         }
3139         card->state = CARD_STATE_SOFTSETUP;
3140
3141         qeth_set_allowed_threads(card, 0xffffffff, 0);
3142         qeth_l3_recover_ip(card);
3143         if (card->lan_online)
3144                 netif_carrier_on(card->dev);
3145         else
3146                 netif_carrier_off(card->dev);
3147         if (recover_flag == CARD_STATE_RECOVER) {
3148                 rtnl_lock();
3149                 if (recovery_mode)
3150                         __qeth_l3_open(card->dev);
3151                 else
3152                         dev_open(card->dev);
3153                 qeth_l3_set_multicast_list(card->dev);
3154                 qeth_recover_features(card->dev);
3155                 rtnl_unlock();
3156         }
3157         qeth_trace_features(card);
3158         /* let user_space know that device is online */
3159         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3160         mutex_unlock(&card->conf_mutex);
3161         mutex_unlock(&card->discipline_mutex);
3162         return 0;
3163 out_remove:
3164         qeth_l3_stop_card(card, 0);
3165         ccw_device_set_offline(CARD_DDEV(card));
3166         ccw_device_set_offline(CARD_WDEV(card));
3167         ccw_device_set_offline(CARD_RDEV(card));
3168         qdio_free(CARD_DDEV(card));
3169         if (recover_flag == CARD_STATE_RECOVER)
3170                 card->state = CARD_STATE_RECOVER;
3171         else
3172                 card->state = CARD_STATE_DOWN;
3173         mutex_unlock(&card->conf_mutex);
3174         mutex_unlock(&card->discipline_mutex);
3175         return rc;
3176 }
3177
3178 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3179 {
3180         return __qeth_l3_set_online(gdev, 0);
3181 }
3182
3183 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3184                         int recovery_mode)
3185 {
3186         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3187         int rc = 0, rc2 = 0, rc3 = 0;
3188         enum qeth_card_states recover_flag;
3189
3190         mutex_lock(&card->discipline_mutex);
3191         mutex_lock(&card->conf_mutex);
3192         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3193         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3194
3195         if (card->dev && netif_carrier_ok(card->dev))
3196                 netif_carrier_off(card->dev);
3197         recover_flag = card->state;
3198         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3199                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3200                 card->info.hwtrap = 1;
3201         }
3202         qeth_l3_stop_card(card, recovery_mode);
3203         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3204                 rtnl_lock();
3205                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3206                 rtnl_unlock();
3207         }
3208         rc  = ccw_device_set_offline(CARD_DDEV(card));
3209         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3210         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3211         if (!rc)
3212                 rc = (rc2) ? rc2 : rc3;
3213         if (rc)
3214                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3215         qdio_free(CARD_DDEV(card));
3216         if (recover_flag == CARD_STATE_UP)
3217                 card->state = CARD_STATE_RECOVER;
3218         /* let user_space know that device is offline */
3219         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3220         mutex_unlock(&card->conf_mutex);
3221         mutex_unlock(&card->discipline_mutex);
3222         return 0;
3223 }
3224
3225 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3226 {
3227         return __qeth_l3_set_offline(cgdev, 0);
3228 }
3229
3230 static int qeth_l3_recover(void *ptr)
3231 {
3232         struct qeth_card *card;
3233         int rc = 0;
3234
3235         card = (struct qeth_card *) ptr;
3236         QETH_CARD_TEXT(card, 2, "recover1");
3237         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3238         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3239                 return 0;
3240         QETH_CARD_TEXT(card, 2, "recover2");
3241         dev_warn(&card->gdev->dev,
3242                 "A recovery process has been started for the device\n");
3243         qeth_set_recovery_task(card);
3244         __qeth_l3_set_offline(card->gdev, 1);
3245         rc = __qeth_l3_set_online(card->gdev, 1);
3246         if (!rc)
3247                 dev_info(&card->gdev->dev,
3248                         "Device successfully recovered!\n");
3249         else {
3250                 qeth_close_dev(card);
3251                 dev_warn(&card->gdev->dev, "The qeth device driver "
3252                                 "failed to recover an error on the device\n");
3253         }
3254         qeth_clear_recovery_task(card);
3255         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3256         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3257         return 0;
3258 }
3259
3260 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3261 {
3262         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3263
3264         if (card->dev)
3265                 netif_device_detach(card->dev);
3266         qeth_set_allowed_threads(card, 0, 1);
3267         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3268         if (gdev->state == CCWGROUP_OFFLINE)
3269                 return 0;
3270         if (card->state == CARD_STATE_UP) {
3271                 if (card->info.hwtrap)
3272                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3273                 __qeth_l3_set_offline(card->gdev, 1);
3274         } else
3275                 __qeth_l3_set_offline(card->gdev, 0);
3276         return 0;
3277 }
3278
3279 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3280 {
3281         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3282         int rc = 0;
3283
3284         if (gdev->state == CCWGROUP_OFFLINE)
3285                 goto out;
3286
3287         if (card->state == CARD_STATE_RECOVER) {
3288                 rc = __qeth_l3_set_online(card->gdev, 1);
3289                 if (rc) {
3290                         rtnl_lock();
3291                         dev_close(card->dev);
3292                         rtnl_unlock();
3293                 }
3294         } else
3295                 rc = __qeth_l3_set_online(card->gdev, 0);
3296 out:
3297         qeth_set_allowed_threads(card, 0xffffffff, 0);
3298         if (card->dev)
3299                 netif_device_attach(card->dev);
3300         if (rc)
3301                 dev_warn(&card->gdev->dev, "The qeth device driver "
3302                         "failed to recover an error on the device\n");
3303         return rc;
3304 }
3305
3306 /* Returns zero if the command is successfully "consumed" */
3307 static int qeth_l3_control_event(struct qeth_card *card,
3308                                         struct qeth_ipa_cmd *cmd)
3309 {
3310         return 1;
3311 }
3312
3313 struct qeth_discipline qeth_l3_discipline = {
3314         .devtype = &qeth_generic_devtype,
3315         .start_poll = qeth_qdio_start_poll,
3316         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3317         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3318         .process_rx_buffer = qeth_l3_process_inbound_buffer,
3319         .recover = qeth_l3_recover,
3320         .setup = qeth_l3_probe_device,
3321         .remove = qeth_l3_remove_device,
3322         .set_online = qeth_l3_set_online,
3323         .set_offline = qeth_l3_set_offline,
3324         .freeze = qeth_l3_pm_suspend,
3325         .thaw = qeth_l3_pm_resume,
3326         .restore = qeth_l3_pm_resume,
3327         .do_ioctl = qeth_l3_do_ioctl,
3328         .control_event_handler = qeth_l3_control_event,
3329 };
3330 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3331
3332 static int qeth_l3_ip_event(struct notifier_block *this,
3333                             unsigned long event, void *ptr)
3334 {
3335
3336         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3337         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3338         struct qeth_ipaddr *addr;
3339         struct qeth_card *card;
3340
3341         if (dev_net(dev) != &init_net)
3342                 return NOTIFY_DONE;
3343
3344         card = qeth_l3_get_card_from_dev(dev);
3345         if (!card)
3346                 return NOTIFY_DONE;
3347         QETH_CARD_TEXT(card, 3, "ipevent");
3348
3349         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3350         if (addr) {
3351                 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address);
3352                 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask);
3353                 addr->type = QETH_IP_TYPE_NORMAL;
3354         } else
3355                 return NOTIFY_DONE;
3356
3357         switch (event) {
3358         case NETDEV_UP:
3359                 spin_lock_bh(&card->ip_lock);
3360                 qeth_l3_add_ip(card, addr);
3361                 spin_unlock_bh(&card->ip_lock);
3362                 break;
3363         case NETDEV_DOWN:
3364                 spin_lock_bh(&card->ip_lock);
3365                 qeth_l3_delete_ip(card, addr);
3366                 spin_unlock_bh(&card->ip_lock);
3367                 break;
3368         }
3369
3370         kfree(addr);
3371         return NOTIFY_DONE;
3372 }
3373
3374 static struct notifier_block qeth_l3_ip_notifier = {
3375         qeth_l3_ip_event,
3376         NULL,
3377 };
3378
3379 #ifdef CONFIG_QETH_IPV6
3380 /**
3381  * IPv6 event handler
3382  */
3383 static int qeth_l3_ip6_event(struct notifier_block *this,
3384                              unsigned long event, void *ptr)
3385 {
3386         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3387         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3388         struct qeth_ipaddr *addr;
3389         struct qeth_card *card;
3390
3391         card = qeth_l3_get_card_from_dev(dev);
3392         if (!card)
3393                 return NOTIFY_DONE;
3394         QETH_CARD_TEXT(card, 3, "ip6event");
3395         if (!qeth_is_supported(card, IPA_IPV6))
3396                 return NOTIFY_DONE;
3397
3398         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3399         if (addr) {
3400                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3401                 addr->u.a6.pfxlen = ifa->prefix_len;
3402                 addr->type = QETH_IP_TYPE_NORMAL;
3403         } else
3404                 return NOTIFY_DONE;
3405
3406         switch (event) {
3407         case NETDEV_UP:
3408                 spin_lock_bh(&card->ip_lock);
3409                 qeth_l3_add_ip(card, addr);
3410                 spin_unlock_bh(&card->ip_lock);
3411                 break;
3412         case NETDEV_DOWN:
3413                 spin_lock_bh(&card->ip_lock);
3414                 qeth_l3_delete_ip(card, addr);
3415                 spin_unlock_bh(&card->ip_lock);
3416                 break;
3417         }
3418
3419         kfree(addr);
3420         return NOTIFY_DONE;
3421 }
3422
3423 static struct notifier_block qeth_l3_ip6_notifier = {
3424         qeth_l3_ip6_event,
3425         NULL,
3426 };
3427 #endif
3428
3429 static int qeth_l3_register_notifiers(void)
3430 {
3431         int rc;
3432
3433         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3434         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3435         if (rc)
3436                 return rc;
3437 #ifdef CONFIG_QETH_IPV6
3438         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3439         if (rc) {
3440                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3441                 return rc;
3442         }
3443 #else
3444         pr_warn("There is no IPv6 support for the layer 3 discipline\n");
3445 #endif
3446         return 0;
3447 }
3448
3449 static void qeth_l3_unregister_notifiers(void)
3450 {
3451
3452         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3453         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3454 #ifdef CONFIG_QETH_IPV6
3455         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3456 #endif /* QETH_IPV6 */
3457 }
3458
3459 static int __init qeth_l3_init(void)
3460 {
3461         int rc = 0;
3462
3463         pr_info("register layer 3 discipline\n");
3464         rc = qeth_l3_register_notifiers();
3465         return rc;
3466 }
3467
3468 static void __exit qeth_l3_exit(void)
3469 {
3470         qeth_l3_unregister_notifiers();
3471         pr_info("unregister layer 3 discipline\n");
3472 }
3473
3474 module_init(qeth_l3_init);
3475 module_exit(qeth_l3_exit);
3476 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3477 MODULE_DESCRIPTION("qeth layer 3 discipline");
3478 MODULE_LICENSE("GPL");