drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/bitops.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/mii.h>
  20 #include <linux/ip.h>
  21 #include <linux/ipv6.h>
  22 #include <linux/inetdevice.h>
  23 #include <linux/igmp.h>
  24 #include <linux/slab.h>
  25 #include <linux/if_vlan.h>
  26
  27 #include <net/ip.h>
  28 #include <net/arp.h>
  29 #include <net/route.h>
  30 #include <net/ip6_fib.h>
  31 #include <net/ip6_checksum.h>
  32 #include <net/iucv/af_iucv.h>
  33 #include <linux/hashtable.h>
  34
  35 #include "qeth_l3.h"
  36
  37
  38 static int qeth_l3_set_offline(struct ccwgroup_device *);
  39 static int qeth_l3_recover(void *);
  40 static int qeth_l3_stop(struct net_device *);
  41 static void qeth_l3_set_multicast_list(struct net_device *);
  42 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  43 static int qeth_l3_register_addr_entry(struct qeth_card *,
  44                 struct qeth_ipaddr *);
  45 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  46                 struct qeth_ipaddr *);
  47 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  48 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  49
  50 static int qeth_l3_isxdigit(char *buf)
  51 {
  52         while (*buf) {
  53                 if (!isxdigit(*buf++))
  54                         return 0;
  55         }
  56         return 1;
  57 }
  58
  59 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  60 {
  61         sprintf(buf, "%pI4", addr);
  62 }
  63
  64 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  65 {
  66         int count = 0, rc = 0;
  67         unsigned int in[4];
  68         char c;
  69
  70         rc = sscanf(buf, "%u.%u.%u.%u%c",
  71                     &in[0], &in[1], &in[2], &in[3], &c);
  72         if (rc != 4 && (rc != 5 || c != '\n'))
  73                 return -EINVAL;
  74         for (count = 0; count < 4; count++) {
  75                 if (in[count] > 255)
  76                         return -EINVAL;
  77                 addr[count] = in[count];
  78         }
  79         return 0;
  80 }
  81
  82 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  83 {
  84         sprintf(buf, "%pI6", addr);
  85 }
  86
  87 static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  88 {
  89         const char *end, *end_tmp, *start;
  90         __u16 *in;
  91         char num[5];
  92         int num2, cnt, out, found, save_cnt;
  93         unsigned short in_tmp[8] = {0, };
  94
  95         cnt = out = found = save_cnt = num2 = 0;
  96         end = start = buf;
  97         in = (__u16 *) addr;
  98         memset(in, 0, 16);
  99         while (*end) {
 100                 end = strchr(start, ':');
 101                 if (end == NULL) {
 102                         end = buf + strlen(buf);
 103                         end_tmp = strchr(start, '\n');
 104                         if (end_tmp != NULL)
 105                                 end = end_tmp;
 106                         out = 1;
 107                 }
 108                 if ((end - start)) {
 109                         memset(num, 0, 5);
 110                         if ((end - start) > 4)
 111                                 return -EINVAL;
 112                         memcpy(num, start, end - start);
 113                         if (!qeth_l3_isxdigit(num))
 114                                 return -EINVAL;
 115                         sscanf(start, "%x", &num2);
 116                         if (found)
 117                                 in_tmp[save_cnt++] = num2;
 118                         else
 119                                 in[cnt++] = num2;
 120                         if (out)
 121                                 break;
 122                 } else {
 123                         if (found)
 124                                 return -EINVAL;
 125                         found = 1;
 126                 }
 127                 start = ++end;
 128         }
 129         if (cnt + save_cnt > 8)
 130                 return -EINVAL;
 131         cnt = 7;
 132         while (save_cnt)
 133                 in[cnt--] = in_tmp[--save_cnt];
 134         return 0;
 135 }
 136
 137 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 138                                 char *buf)
 139 {
 140         if (proto == QETH_PROT_IPV4)
 141                 qeth_l3_ipaddr4_to_string(addr, buf);
 142         else if (proto == QETH_PROT_IPV6)
 143                 qeth_l3_ipaddr6_to_string(addr, buf);
 144 }
 145
 146 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 147                                 __u8 *addr)
 148 {
 149         if (proto == QETH_PROT_IPV4)
 150                 return qeth_l3_string_to_ipaddr4(buf, addr);
 151         else if (proto == QETH_PROT_IPV6)
 152                 return qeth_l3_string_to_ipaddr6(buf, addr);
 153         else
 154                 return -EINVAL;
 155 }
 156
 157 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 158 {
 159         int i, j;
 160         u8 octet;
 161
 162         for (i = 0; i < len; ++i) {
 163                 octet = addr[i];
 164                 for (j = 7; j >= 0; --j) {
 165                         bits[i*8 + j] = octet & 1;
 166                         octet >>= 1;
 167                 }
 168         }
 169 }
 170
 171 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 172                                                 struct qeth_ipaddr *addr)
 173 {
 174         struct qeth_ipato_entry *ipatoe;
 175         u8 addr_bits[128] = {0, };
 176         u8 ipatoe_bits[128] = {0, };
 177         int rc = 0;
 178
 179         if (!card->ipato.enabled)
 180                 return 0;
 181
 182         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 183                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 184         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 185                 if (addr->proto != ipatoe->proto)
 186                         continue;
 187                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 188                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 189                                           4 : 16);
 190                 if (addr->proto == QETH_PROT_IPV4)
 191                         rc = !memcmp(addr_bits, ipatoe_bits,
 192                                      min(32, ipatoe->mask_bits));
 193                 else
 194                         rc = !memcmp(addr_bits, ipatoe_bits,
 195                                      min(128, ipatoe->mask_bits));
 196                 if (rc)
 197                         break;
 198         }
 199         /* invert? */
 200         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 201                 rc = !rc;
 202         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 203                 rc = !rc;
 204
 205         return rc;
 206 }
 207
 208 inline int
 209 qeth_l3_ipaddrs_is_equal(struct qeth_ipaddr *addr1, struct qeth_ipaddr *addr2)
 210 {
 211         return addr1->proto == addr2->proto &&
 212                 !memcmp(&addr1->u, &addr2->u, sizeof(addr1->u))  &&
 213                 !memcmp(&addr1->mac, &addr2->mac, sizeof(addr1->mac));
 214 }
 215
 216 static struct qeth_ipaddr *
 217 qeth_l3_ip_from_hash(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 218 {
 219         struct qeth_ipaddr *addr;
 220
 221         if (tmp_addr->is_multicast) {
 222                 hash_for_each_possible(card->ip_mc_htable,  addr,
 223                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 224                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 225                                 return addr;
 226         } else {
 227                 hash_for_each_possible(card->ip_htable,  addr,
 228                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 229                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 230                                 return addr;
 231         }
 232
 233         return NULL;
 234 }
 235
 236 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 237 {
 238         int rc = 0;
 239         struct qeth_ipaddr *addr;
 240
 241         QETH_CARD_TEXT(card, 4, "delip");
 242
 243         if (tmp_addr->proto == QETH_PROT_IPV4)
 244                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 245         else {
 246                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 247                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 248         }
 249
 250         addr = qeth_l3_ip_from_hash(card, tmp_addr);
 251         if (!addr)
 252                 return -ENOENT;
 253
 254         addr->ref_counter--;
 255         if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
 256                 return rc;
 257         if (addr->in_progress)
 258                 return -EINPROGRESS;
 259
 260         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                 /* qeth_l3_register_addr_entry can go to sleep
 300                  * if we add a IPV4 addr. It is caused by the reason
 301                  * that SETIP ipa cmd starts ARP staff for IPV4 addr.
 302                  * Thus we should unlock spinlock, and make a protection
 303                  * using in_progress variable to indicate that there is
 304                  * an hardware operation with this IPV4 address
 305                  */
 306                 if (addr->proto == QETH_PROT_IPV4) {
 307                         addr->in_progress = 1;
 308                         spin_unlock_bh(&card->ip_lock);
 309                         rc = qeth_l3_register_addr_entry(card, addr);
 310                         spin_lock_bh(&card->ip_lock);
 311                         addr->in_progress = 0;
 312                 } else
 313                         rc = qeth_l3_register_addr_entry(card, addr);
 314
 315                 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
 316                                 (rc == IPA_RC_LAN_OFFLINE)) {
 317                         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 318                         if (addr->ref_counter < 1) {
 319                                 qeth_l3_delete_ip(card, addr);
 320                                 kfree(addr);
 321                         }
 322                 } else {
 323                         hash_del(&addr->hnode);
 324                         kfree(addr);
 325                 }
 326         } else {
 327                         if (addr->type == QETH_IP_TYPE_NORMAL)
 328                                 addr->ref_counter++;
 329         }
 330
 331         return rc;
 332 }
 333
 334
 335 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 336                                 enum qeth_prot_versions prot)
 337 {
 338         struct qeth_ipaddr *addr;
 339
 340         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 341         if (!addr)
 342                 return NULL;
 343
 344         addr->type = QETH_IP_TYPE_NORMAL;
 345         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 346         addr->proto = prot;
 347
 348         return addr;
 349 }
 350
 351 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 352 {
 353         struct qeth_ipaddr *addr;
 354         struct hlist_node *tmp;
 355         int i;
 356
 357         QETH_CARD_TEXT(card, 4, "clearip");
 358
 359         if (recover && card->options.sniffer)
 360                 return;
 361
 362         spin_lock_bh(&card->ip_lock);
 363
 364         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 365                 if (!recover) {
 366                         hash_del(&addr->hnode);
 367                         kfree(addr);
 368                         continue;
 369                 }
 370                 addr->disp_flag = QETH_DISP_ADDR_ADD;
 371         }
 372
 373         spin_unlock_bh(&card->ip_lock);
 374
 375         spin_lock_bh(&card->mclock);
 376
 377         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
 378                 hash_del(&addr->hnode);
 379                 kfree(addr);
 380         }
 381
 382         spin_unlock_bh(&card->mclock);
 383
 384
 385 }
 386 static void qeth_l3_recover_ip(struct qeth_card *card)
 387 {
 388         struct qeth_ipaddr *addr;
 389         struct hlist_node *tmp;
 390         int i;
 391         int rc;
 392
 393         QETH_CARD_TEXT(card, 4, "recoverip");
 394
 395         spin_lock_bh(&card->ip_lock);
 396
 397         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 398                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
 399                         if (addr->proto == QETH_PROT_IPV4) {
 400                                 addr->in_progress = 1;
 401                                 spin_unlock_bh(&card->ip_lock);
 402                                 rc = qeth_l3_register_addr_entry(card, addr);
 403                                 spin_lock_bh(&card->ip_lock);
 404                                 addr->in_progress = 0;
 405                         } else
 406                                 rc = qeth_l3_register_addr_entry(card, addr);
 407
 408                         if (!rc) {
 409                                 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 410                                 if (addr->ref_counter < 1) {
 411                                         qeth_l3_delete_ip(card, addr);
 412                                         kfree(addr);
 413                                 }
 414                         } else {
 415                                 hash_del(&addr->hnode);
 416                                 kfree(addr);
 417                         }
 418                 }
 419         }
 420
 421         spin_unlock_bh(&card->ip_lock);
 422
 423 }
 424
 425 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 426                         struct qeth_ipaddr *addr, int ipacmd)
 427 {
 428         int rc;
 429         struct qeth_cmd_buffer *iob;
 430         struct qeth_ipa_cmd *cmd;
 431
 432         QETH_CARD_TEXT(card, 4, "setdelmc");
 433
 434         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 435         if (!iob)
 436                 return -ENOMEM;
 437         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 438         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 439         if (addr->proto == QETH_PROT_IPV6)
 440                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 441                        sizeof(struct in6_addr));
 442         else
 443                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 444
 445         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 446
 447         return rc;
 448 }
 449
 450 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 451 {
 452         int i, j;
 453         for (i = 0; i < 16; i++) {
 454                 j = (len) - (i * 8);
 455                 if (j >= 8)
 456                         netmask[i] = 0xff;
 457                 else if (j > 0)
 458                         netmask[i] = (u8)(0xFF00 >> j);
 459                 else
 460                         netmask[i] = 0;
 461         }
 462 }
 463
 464 static int qeth_l3_send_setdelip(struct qeth_card *card,
 465                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 466 {
 467         int rc;
 468         struct qeth_cmd_buffer *iob;
 469         struct qeth_ipa_cmd *cmd;
 470         __u8 netmask[16];
 471
 472         QETH_CARD_TEXT(card, 4, "setdelip");
 473         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 474
 475         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 476         if (!iob)
 477                 return -ENOMEM;
 478         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 479         if (addr->proto == QETH_PROT_IPV6) {
 480                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 481                        sizeof(struct in6_addr));
 482                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 483                 memcpy(cmd->data.setdelip6.mask, netmask,
 484                        sizeof(struct in6_addr));
 485                 cmd->data.setdelip6.flags = flags;
 486         } else {
 487                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 488                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 489                 cmd->data.setdelip4.flags = flags;
 490         }
 491
 492         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 493
 494         return rc;
 495 }
 496
 497 static int qeth_l3_send_setrouting(struct qeth_card *card,
 498         enum qeth_routing_types type, enum qeth_prot_versions prot)
 499 {
 500         int rc;
 501         struct qeth_ipa_cmd *cmd;
 502         struct qeth_cmd_buffer *iob;
 503
 504         QETH_CARD_TEXT(card, 4, "setroutg");
 505         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 506         if (!iob)
 507                 return -ENOMEM;
 508         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 509         cmd->data.setrtg.type = (type);
 510         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 511
 512         return rc;
 513 }
 514
 515 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 516                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 517 {
 518         if (card->info.type == QETH_CARD_TYPE_IQD) {
 519                 switch (*type) {
 520                 case NO_ROUTER:
 521                 case PRIMARY_CONNECTOR:
 522                 case SECONDARY_CONNECTOR:
 523                 case MULTICAST_ROUTER:
 524                         return 0;
 525                 default:
 526                         goto out_inval;
 527                 }
 528         } else {
 529                 switch (*type) {
 530                 case NO_ROUTER:
 531                 case PRIMARY_ROUTER:
 532                 case SECONDARY_ROUTER:
 533                         return 0;
 534                 case MULTICAST_ROUTER:
 535                         if (qeth_is_ipafunc_supported(card, prot,
 536                                                       IPA_OSA_MC_ROUTER))
 537                                 return 0;
 538                 default:
 539                         goto out_inval;
 540                 }
 541         }
 542 out_inval:
 543         *type = NO_ROUTER;
 544         return -EINVAL;
 545 }
 546
 547 int qeth_l3_setrouting_v4(struct qeth_card *card)
 548 {
 549         int rc;
 550
 551         QETH_CARD_TEXT(card, 3, "setrtg4");
 552
 553         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 554                                   QETH_PROT_IPV4);
 555         if (rc)
 556                 return rc;
 557
 558         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 559                                   QETH_PROT_IPV4);
 560         if (rc) {
 561                 card->options.route4.type = NO_ROUTER;
 562                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 563                         " on %s. Type set to 'no router'.\n", rc,
 564                         QETH_CARD_IFNAME(card));
 565         }
 566         return rc;
 567 }
 568
 569 int qeth_l3_setrouting_v6(struct qeth_card *card)
 570 {
 571         int rc = 0;
 572
 573         QETH_CARD_TEXT(card, 3, "setrtg6");
 574 #ifdef CONFIG_QETH_IPV6
 575
 576         if (!qeth_is_supported(card, IPA_IPV6))
 577                 return 0;
 578         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 579                                   QETH_PROT_IPV6);
 580         if (rc)
 581                 return rc;
 582
 583         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 584                                   QETH_PROT_IPV6);
 585         if (rc) {
 586                 card->options.route6.type = NO_ROUTER;
 587                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 588                         " on %s. Type set to 'no router'.\n", rc,
 589                         QETH_CARD_IFNAME(card));
 590         }
 591 #endif
 592         return rc;
 593 }
 594
 595 /*
 596  * IP address takeover related functions
 597  */
 598 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 599 {
 600         struct qeth_ipato_entry *ipatoe, *tmp;
 601
 602         spin_lock_bh(&card->ip_lock);
 603
 604         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 605                 list_del(&ipatoe->entry);
 606                 kfree(ipatoe);
 607         }
 608
 609         spin_unlock_bh(&card->ip_lock);
 610 }
 611
 612 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 613                                 struct qeth_ipato_entry *new)
 614 {
 615         struct qeth_ipato_entry *ipatoe;
 616         int rc = 0;
 617
 618         QETH_CARD_TEXT(card, 2, "addipato");
 619
 620         spin_lock_bh(&card->ip_lock);
 621
 622         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 623                 if (ipatoe->proto != new->proto)
 624                         continue;
 625                 if (!memcmp(ipatoe->addr, new->addr,
 626                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 627                     (ipatoe->mask_bits == new->mask_bits)) {
 628                         rc = -EEXIST;
 629                         break;
 630                 }
 631         }
 632
 633         if (!rc)
 634                 list_add_tail(&new->entry, &card->ipato.entries);
 635
 636         spin_unlock_bh(&card->ip_lock);
 637
 638         return rc;
 639 }
 640
 641 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 642                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 643 {
 644         struct qeth_ipato_entry *ipatoe, *tmp;
 645
 646         QETH_CARD_TEXT(card, 2, "delipato");
 647
 648         spin_lock_bh(&card->ip_lock);
 649
 650         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 651                 if (ipatoe->proto != proto)
 652                         continue;
 653                 if (!memcmp(ipatoe->addr, addr,
 654                             (proto == QETH_PROT_IPV4)? 4:16) &&
 655                     (ipatoe->mask_bits == mask_bits)) {
 656                         list_del(&ipatoe->entry);
 657                         kfree(ipatoe);
 658                 }
 659         }
 660
 661         spin_unlock_bh(&card->ip_lock);
 662 }
 663
 664 /*
 665  * VIPA related functions
 666  */
 667 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 668               const u8 *addr)
 669 {
 670         struct qeth_ipaddr *ipaddr;
 671         int rc = 0;
 672
 673         ipaddr = qeth_l3_get_addr_buffer(proto);
 674         if (ipaddr) {
 675                 if (proto == QETH_PROT_IPV4) {
 676                         QETH_CARD_TEXT(card, 2, "addvipa4");
 677                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 678                         ipaddr->u.a4.mask = 0;
 679                 } else if (proto == QETH_PROT_IPV6) {
 680                         QETH_CARD_TEXT(card, 2, "addvipa6");
 681                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 682                         ipaddr->u.a6.pfxlen = 0;
 683                 }
 684                 ipaddr->type = QETH_IP_TYPE_VIPA;
 685                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 686                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 687         } else
 688                 return -ENOMEM;
 689
 690         spin_lock_bh(&card->ip_lock);
 691
 692         if (!qeth_l3_ip_from_hash(card, ipaddr))
 693                 rc = -EEXIST;
 694         else
 695                 qeth_l3_add_ip(card, ipaddr);
 696
 697         spin_unlock_bh(&card->ip_lock);
 698
 699         kfree(ipaddr);
 700
 701         return rc;
 702 }
 703
 704 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 705               const u8 *addr)
 706 {
 707         struct qeth_ipaddr *ipaddr;
 708
 709         ipaddr = qeth_l3_get_addr_buffer(proto);
 710         if (ipaddr) {
 711                 if (proto == QETH_PROT_IPV4) {
 712                         QETH_CARD_TEXT(card, 2, "delvipa4");
 713                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 714                         ipaddr->u.a4.mask = 0;
 715                 } else if (proto == QETH_PROT_IPV6) {
 716                         QETH_CARD_TEXT(card, 2, "delvipa6");
 717                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 718                         ipaddr->u.a6.pfxlen = 0;
 719                 }
 720                 ipaddr->type = QETH_IP_TYPE_VIPA;
 721         } else
 722                 return;
 723
 724         spin_lock_bh(&card->ip_lock);
 725         qeth_l3_delete_ip(card, ipaddr);
 726         spin_unlock_bh(&card->ip_lock);
 727
 728         kfree(ipaddr);
 729 }
 730
 731 /*
 732  * proxy ARP related functions
 733  */
 734 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 735               const u8 *addr)
 736 {
 737         struct qeth_ipaddr *ipaddr;
 738         int rc = 0;
 739
 740         ipaddr = qeth_l3_get_addr_buffer(proto);
 741         if (ipaddr) {
 742                 if (proto == QETH_PROT_IPV4) {
 743                         QETH_CARD_TEXT(card, 2, "addrxip4");
 744                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 745                         ipaddr->u.a4.mask = 0;
 746                 } else if (proto == QETH_PROT_IPV6) {
 747                         QETH_CARD_TEXT(card, 2, "addrxip6");
 748                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 749                         ipaddr->u.a6.pfxlen = 0;
 750                 }
 751
 752                 ipaddr->type = QETH_IP_TYPE_RXIP;
 753                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 754                 ipaddr->del_flags = 0;
 755         } else
 756                 return -ENOMEM;
 757
 758         spin_lock_bh(&card->ip_lock);
 759
 760         if (!qeth_l3_ip_from_hash(card, ipaddr))
 761                 rc = -EEXIST;
 762         else
 763                 qeth_l3_add_ip(card, ipaddr);
 764
 765         spin_unlock_bh(&card->ip_lock);
 766
 767         kfree(ipaddr);
 768
 769         return rc;
 770 }
 771
 772 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 773                         const u8 *addr)
 774 {
 775         struct qeth_ipaddr *ipaddr;
 776
 777         ipaddr = qeth_l3_get_addr_buffer(proto);
 778         if (ipaddr) {
 779                 if (proto == QETH_PROT_IPV4) {
 780                         QETH_CARD_TEXT(card, 2, "addrxip4");
 781                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 782                         ipaddr->u.a4.mask = 0;
 783                 } else if (proto == QETH_PROT_IPV6) {
 784                         QETH_CARD_TEXT(card, 2, "addrxip6");
 785                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 786                         ipaddr->u.a6.pfxlen = 0;
 787                 }
 788                 ipaddr->type = QETH_IP_TYPE_RXIP;
 789         } else
 790                 return;
 791
 792         spin_lock_bh(&card->ip_lock);
 793         qeth_l3_delete_ip(card, ipaddr);
 794         spin_unlock_bh(&card->ip_lock);
 795
 796         kfree(ipaddr);
 797 }
 798
 799 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 800                                 struct qeth_ipaddr *addr)
 801 {
 802         char buf[50];
 803         int rc = 0;
 804         int cnt = 3;
 805
 806
 807         if (addr->proto == QETH_PROT_IPV4) {
 808                 QETH_CARD_TEXT(card, 2, "setaddr4");
 809                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 810         } else if (addr->proto == QETH_PROT_IPV6) {
 811                 QETH_CARD_TEXT(card, 2, "setaddr6");
 812                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 813                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 814         } else {
 815                 QETH_CARD_TEXT(card, 2, "setaddr?");
 816                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 817         }
 818         do {
 819                 if (addr->is_multicast)
 820                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 821                 else
 822                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 823                                         addr->set_flags);
 824                 if (rc)
 825                         QETH_CARD_TEXT(card, 2, "failed");
 826         } while ((--cnt > 0) && rc);
 827         if (rc) {
 828                 QETH_CARD_TEXT(card, 2, "FAILED");
 829                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 830                 dev_warn(&card->gdev->dev,
 831                         "Registering IP address %s failed\n", buf);
 832         }
 833         return rc;
 834 }
 835
 836 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 837                                                 struct qeth_ipaddr *addr)
 838 {
 839         int rc = 0;
 840
 841         if (addr->proto == QETH_PROT_IPV4) {
 842                 QETH_CARD_TEXT(card, 2, "deladdr4");
 843                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 844         } else if (addr->proto == QETH_PROT_IPV6) {
 845                 QETH_CARD_TEXT(card, 2, "deladdr6");
 846                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 847                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 848         } else {
 849                 QETH_CARD_TEXT(card, 2, "deladdr?");
 850                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 851         }
 852         if (addr->is_multicast)
 853                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 854         else
 855                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 856                                         addr->del_flags);
 857         if (rc)
 858                 QETH_CARD_TEXT(card, 2, "failed");
 859
 860         return rc;
 861 }
 862
 863 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 864 {
 865         if (cast_type == RTN_MULTICAST)
 866                 return QETH_CAST_MULTICAST;
 867         if (cast_type == RTN_BROADCAST)
 868                 return QETH_CAST_BROADCAST;
 869         return QETH_CAST_UNICAST;
 870 }
 871
 872 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 873 {
 874         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 875         if (cast_type == RTN_MULTICAST)
 876                 return ct | QETH_CAST_MULTICAST;
 877         if (cast_type == RTN_ANYCAST)
 878                 return ct | QETH_CAST_ANYCAST;
 879         if (cast_type == RTN_BROADCAST)
 880                 return ct | QETH_CAST_BROADCAST;
 881         return ct | QETH_CAST_UNICAST;
 882 }
 883
 884 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 885 {
 886         int rc;
 887
 888         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 889
 890         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 891                 dev_info(&card->gdev->dev,
 892                         "set adapter parameters not supported.\n");
 893                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 894                 return 0;
 895         }
 896         rc = qeth_query_setadapterparms(card);
 897         if (rc) {
 898                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
 899                         "0x%x\n", dev_name(&card->gdev->dev), rc);
 900                 return rc;
 901         }
 902         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 903                 rc = qeth_setadpparms_change_macaddr(card);
 904                 if (rc)
 905                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
 906                                 " address failed\n");
 907         }
 908
 909         return rc;
 910 }
 911
 912 #ifdef CONFIG_QETH_IPV6
 913 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
 914                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
 915 {
 916         int rc;
 917         struct qeth_cmd_buffer *iob;
 918
 919         QETH_CARD_TEXT(card, 4, "simassp6");
 920         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
 921                                        0, QETH_PROT_IPV6);
 922         if (!iob)
 923                 return -ENOMEM;
 924         rc = qeth_send_setassparms(card, iob, 0, 0,
 925                                    qeth_setassparms_cb, NULL);
 926         return rc;
 927 }
 928 #endif
 929
 930 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
 931 {
 932         int rc;
 933
 934         QETH_CARD_TEXT(card, 3, "ipaarp");
 935
 936         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 937                 dev_info(&card->gdev->dev,
 938                         "ARP processing not supported on %s!\n",
 939                         QETH_CARD_IFNAME(card));
 940                 return 0;
 941         }
 942         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
 943                                           IPA_CMD_ASS_START, 0);
 944         if (rc) {
 945                 dev_warn(&card->gdev->dev,
 946                         "Starting ARP processing support for %s failed\n",
 947                         QETH_CARD_IFNAME(card));
 948         }
 949         return rc;
 950 }
 951
 952 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
 953 {
 954         int rc;
 955
 956         QETH_CARD_TEXT(card, 3, "ipaipfrg");
 957
 958         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
 959                 dev_info(&card->gdev->dev,
 960                         "Hardware IP fragmentation not supported on %s\n",
 961                         QETH_CARD_IFNAME(card));
 962                 return  -EOPNOTSUPP;
 963         }
 964
 965         rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
 966                                           IPA_CMD_ASS_START, 0);
 967         if (rc) {
 968                 dev_warn(&card->gdev->dev,
 969                         "Starting IP fragmentation support for %s failed\n",
 970                         QETH_CARD_IFNAME(card));
 971         } else
 972                 dev_info(&card->gdev->dev,
 973                         "Hardware IP fragmentation enabled \n");
 974         return rc;
 975 }
 976
 977 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
 978 {
 979         int rc;
 980
 981         QETH_CARD_TEXT(card, 3, "stsrcmac");
 982
 983         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
 984                 dev_info(&card->gdev->dev,
 985                         "Inbound source MAC-address not supported on %s\n",
 986                         QETH_CARD_IFNAME(card));
 987                 return -EOPNOTSUPP;
 988         }
 989
 990         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
 991                                           IPA_CMD_ASS_START, 0);
 992         if (rc)
 993                 dev_warn(&card->gdev->dev,
 994                         "Starting source MAC-address support for %s failed\n",
 995                         QETH_CARD_IFNAME(card));
 996         return rc;
 997 }
 998
 999 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1000 {
1001         int rc = 0;
1002
1003         QETH_CARD_TEXT(card, 3, "strtvlan");
1004
1005         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1006                 dev_info(&card->gdev->dev,
1007                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1008                 return -EOPNOTSUPP;
1009         }
1010
1011         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
1012                                           IPA_CMD_ASS_START, 0);
1013         if (rc) {
1014                 dev_warn(&card->gdev->dev,
1015                         "Starting VLAN support for %s failed\n",
1016                         QETH_CARD_IFNAME(card));
1017         } else {
1018                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1019         }
1020         return rc;
1021 }
1022
1023 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1024 {
1025         int rc;
1026
1027         QETH_CARD_TEXT(card, 3, "stmcast");
1028
1029         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1030                 dev_info(&card->gdev->dev,
1031                         "Multicast not supported on %s\n",
1032                         QETH_CARD_IFNAME(card));
1033                 return -EOPNOTSUPP;
1034         }
1035
1036         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1037                                           IPA_CMD_ASS_START, 0);
1038         if (rc) {
1039                 dev_warn(&card->gdev->dev,
1040                         "Starting multicast support for %s failed\n",
1041                         QETH_CARD_IFNAME(card));
1042         } else {
1043                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1044                 card->dev->flags |= IFF_MULTICAST;
1045         }
1046         return rc;
1047 }
1048
1049 #ifdef CONFIG_QETH_IPV6
1050 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1051 {
1052         int rc;
1053
1054         QETH_CARD_TEXT(card, 3, "softipv6");
1055
1056         if (card->info.type == QETH_CARD_TYPE_IQD)
1057                 goto out;
1058
1059         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1060         if (rc) {
1061                 dev_err(&card->gdev->dev,
1062                         "Activating IPv6 support for %s failed\n",
1063                         QETH_CARD_IFNAME(card));
1064                 return rc;
1065         }
1066         rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1067                                           IPA_CMD_ASS_START, 3);
1068         if (rc) {
1069                 dev_err(&card->gdev->dev,
1070                         "Activating IPv6 support for %s failed\n",
1071                         QETH_CARD_IFNAME(card));
1072                 return rc;
1073         }
1074         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1075                                                IPA_CMD_ASS_START);
1076         if (rc) {
1077                 dev_err(&card->gdev->dev,
1078                         "Activating IPv6 support for %s failed\n",
1079                          QETH_CARD_IFNAME(card));
1080                 return rc;
1081         }
1082         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1083                                                IPA_CMD_ASS_START);
1084         if (rc) {
1085                 dev_warn(&card->gdev->dev,
1086                         "Enabling the passthrough mode for %s failed\n",
1087                         QETH_CARD_IFNAME(card));
1088                 return rc;
1089         }
1090 out:
1091         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1092         return 0;
1093 }
1094 #endif
1095
1096 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1097 {
1098         int rc = 0;
1099
1100         QETH_CARD_TEXT(card, 3, "strtipv6");
1101
1102         if (!qeth_is_supported(card, IPA_IPV6)) {
1103                 dev_info(&card->gdev->dev,
1104                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1105                 return 0;
1106         }
1107 #ifdef CONFIG_QETH_IPV6
1108         rc = qeth_l3_softsetup_ipv6(card);
1109 #endif
1110         return rc ;
1111 }
1112
1113 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1114 {
1115         int rc;
1116
1117         QETH_CARD_TEXT(card, 3, "stbrdcst");
1118         card->info.broadcast_capable = 0;
1119         if (!qeth_is_supported(card, IPA_FILTERING)) {
1120                 dev_info(&card->gdev->dev,
1121                         "Broadcast not supported on %s\n",
1122                         QETH_CARD_IFNAME(card));
1123                 rc = -EOPNOTSUPP;
1124                 goto out;
1125         }
1126         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1127                                           IPA_CMD_ASS_START, 0);
1128         if (rc) {
1129                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1130                         "%s failed\n", QETH_CARD_IFNAME(card));
1131                 goto out;
1132         }
1133
1134         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1135                                           IPA_CMD_ASS_CONFIGURE, 1);
1136         if (rc) {
1137                 dev_warn(&card->gdev->dev,
1138                         "Setting up broadcast filtering for %s failed\n",
1139                         QETH_CARD_IFNAME(card));
1140                 goto out;
1141         }
1142         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1143         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1144         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1145                                           IPA_CMD_ASS_ENABLE, 1);
1146         if (rc) {
1147                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1148                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1149                 goto out;
1150         }
1151         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1152 out:
1153         if (card->info.broadcast_capable)
1154                 card->dev->flags |= IFF_BROADCAST;
1155         else
1156                 card->dev->flags &= ~IFF_BROADCAST;
1157         return rc;
1158 }
1159
1160 static int qeth_l3_start_ipassists(struct qeth_card *card)
1161 {
1162         QETH_CARD_TEXT(card, 3, "strtipas");
1163
1164         if (qeth_set_access_ctrl_online(card, 0))
1165                 return -EIO;
1166         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1167         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1168         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1169         qeth_l3_start_ipa_vlan(card);           /* go on*/
1170         qeth_l3_start_ipa_multicast(card);              /* go on*/
1171         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1172         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1173         return 0;
1174 }
1175
1176 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1177                 struct qeth_reply *reply, unsigned long data)
1178 {
1179         struct qeth_ipa_cmd *cmd;
1180
1181         cmd = (struct qeth_ipa_cmd *) data;
1182         if (cmd->hdr.return_code == 0)
1183                 memcpy(card->dev->dev_addr,
1184                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1185         else
1186                 eth_random_addr(card->dev->dev_addr);
1187
1188         return 0;
1189 }
1190
1191 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1192 {
1193         int rc = 0;
1194         struct qeth_cmd_buffer *iob;
1195         struct qeth_ipa_cmd *cmd;
1196
1197         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1198
1199         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1200                                      QETH_PROT_IPV6);
1201         if (!iob)
1202                 return -ENOMEM;
1203         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1204         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1205                         card->info.unique_id;
1206
1207         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1208                                 NULL);
1209         return rc;
1210 }
1211
1212 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1213                 struct qeth_reply *reply, unsigned long data)
1214 {
1215         struct qeth_ipa_cmd *cmd;
1216
1217         cmd = (struct qeth_ipa_cmd *) data;
1218         if (cmd->hdr.return_code == 0)
1219                 card->info.unique_id = *((__u16 *)
1220                                 &cmd->data.create_destroy_addr.unique_id[6]);
1221         else {
1222                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1223                                         UNIQUE_ID_NOT_BY_CARD;
1224                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1225                         "generate a unique ID\n");
1226         }
1227         return 0;
1228 }
1229
1230 static int qeth_l3_get_unique_id(struct qeth_card *card)
1231 {
1232         int rc = 0;
1233         struct qeth_cmd_buffer *iob;
1234         struct qeth_ipa_cmd *cmd;
1235
1236         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1237
1238         if (!qeth_is_supported(card, IPA_IPV6)) {
1239                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1240                                         UNIQUE_ID_NOT_BY_CARD;
1241                 return 0;
1242         }
1243
1244         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1245                                      QETH_PROT_IPV6);
1246         if (!iob)
1247                 return -ENOMEM;
1248         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1249         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1250                         card->info.unique_id;
1251
1252         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1253         return rc;
1254 }
1255
1256 static int
1257 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1258                             unsigned long data)
1259 {
1260         struct qeth_ipa_cmd        *cmd;
1261         __u16 rc;
1262
1263         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1264
1265         cmd = (struct qeth_ipa_cmd *)data;
1266         rc = cmd->hdr.return_code;
1267         if (rc)
1268                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1269         switch (cmd->data.diagass.action) {
1270         case QETH_DIAGS_CMD_TRACE_QUERY:
1271                 break;
1272         case QETH_DIAGS_CMD_TRACE_DISABLE:
1273                 switch (rc) {
1274                 case 0:
1275                 case IPA_RC_INVALID_SUBCMD:
1276                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1277                         dev_info(&card->gdev->dev, "The HiperSockets network "
1278                                 "traffic analyzer is deactivated\n");
1279                         break;
1280                 default:
1281                         break;
1282                 }
1283                 break;
1284         case QETH_DIAGS_CMD_TRACE_ENABLE:
1285                 switch (rc) {
1286                 case 0:
1287                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1288                         dev_info(&card->gdev->dev, "The HiperSockets network "
1289                                 "traffic analyzer is activated\n");
1290                         break;
1291                 case IPA_RC_HARDWARE_AUTH_ERROR:
1292                         dev_warn(&card->gdev->dev, "The device is not "
1293                                 "authorized to run as a HiperSockets network "
1294                                 "traffic analyzer\n");
1295                         break;
1296                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1297                         dev_warn(&card->gdev->dev, "A HiperSockets "
1298                                 "network traffic analyzer is already "
1299                                 "active in the HiperSockets LAN\n");
1300                         break;
1301                 default:
1302                         break;
1303                 }
1304                 break;
1305         default:
1306                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1307                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1308         }
1309
1310         return 0;
1311 }
1312
1313 static int
1314 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1315 {
1316         struct qeth_cmd_buffer *iob;
1317         struct qeth_ipa_cmd    *cmd;
1318
1319         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1320
1321         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1322         if (!iob)
1323                 return -ENOMEM;
1324         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1325         cmd->data.diagass.subcmd_len = 16;
1326         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1327         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1328         cmd->data.diagass.action = diags_cmd;
1329         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1330 }
1331
1332 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac)
1333 {
1334         ip_eth_mc_map(ipm, mac);
1335 }
1336
1337 static void qeth_l3_mark_all_mc_to_be_deleted(struct qeth_card *card)
1338 {
1339         struct qeth_ipaddr *addr;
1340         int i;
1341
1342         hash_for_each(card->ip_mc_htable, i, addr, hnode)
1343                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1344
1345 }
1346
1347 static void qeth_l3_add_all_new_mc(struct qeth_card *card)
1348 {
1349         struct qeth_ipaddr *addr;
1350         struct hlist_node *tmp;
1351         int i;
1352         int rc;
1353
1354         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1355                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
1356                         rc = qeth_l3_register_addr_entry(card, addr);
1357                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
1358                                 addr->ref_counter = 1;
1359                         else {
1360                                 hash_del(&addr->hnode);
1361                                 kfree(addr);
1362                         }
1363                 }
1364         }
1365
1366 }
1367
1368 static void qeth_l3_delete_nonused_mc(struct qeth_card *card)
1369 {
1370         struct qeth_ipaddr *addr;
1371         struct hlist_node *tmp;
1372         int i;
1373         int rc;
1374
1375         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1376                 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
1377                         rc = qeth_l3_deregister_addr_entry(card, addr);
1378                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) {
1379                                 hash_del(&addr->hnode);
1380                                 kfree(addr);
1381                         }
1382                 }
1383         }
1384
1385 }
1386
1387
1388 static void
1389 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1390 {
1391         struct ip_mc_list *im4;
1392         struct qeth_ipaddr *tmp, *ipm;
1393         char buf[MAX_ADDR_LEN];
1394
1395         QETH_CARD_TEXT(card, 4, "addmc");
1396
1397         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1398                 if (!tmp)
1399                         return;
1400
1401         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1402              im4 = rcu_dereference(im4->next_rcu)) {
1403                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf);
1404
1405                 tmp->u.a4.addr = im4->multiaddr;
1406                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1407
1408                 ipm = qeth_l3_ip_from_hash(card, tmp);
1409                 if (ipm) {
1410                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1411                 } else {
1412                         ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1413                         if (!ipm)
1414                                 continue;
1415                         memcpy(ipm->mac, buf, sizeof(tmp->mac));
1416                         ipm->u.a4.addr = im4->multiaddr;
1417                         ipm->is_multicast = 1;
1418                         ipm->disp_flag = QETH_DISP_ADDR_ADD;
1419                         hash_add(card->ip_mc_htable,
1420                                         &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1421                 }
1422         }
1423
1424         kfree(tmp);
1425 }
1426
1427 /* called with rcu_read_lock */
1428 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1429 {
1430         struct in_device *in_dev;
1431         u16 vid;
1432
1433         QETH_CARD_TEXT(card, 4, "addmcvl");
1434
1435         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1436                 return;
1437
1438         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1439                 struct net_device *netdev;
1440
1441                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1442                                               vid);
1443                 if (netdev == NULL ||
1444                     !(netdev->flags & IFF_UP))
1445                         continue;
1446                 in_dev = __in_dev_get_rcu(netdev);
1447                 if (!in_dev)
1448                         continue;
1449                 qeth_l3_add_mc_to_hash(card, in_dev);
1450         }
1451 }
1452
1453 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1454 {
1455         struct in_device *in4_dev;
1456
1457         QETH_CARD_TEXT(card, 4, "chkmcv4");
1458
1459         rcu_read_lock();
1460         in4_dev = __in_dev_get_rcu(card->dev);
1461         if (in4_dev == NULL)
1462                 goto unlock;
1463         qeth_l3_add_mc_to_hash(card, in4_dev);
1464         qeth_l3_add_vlan_mc(card);
1465 unlock:
1466         rcu_read_unlock();
1467 }
1468
1469 #ifdef CONFIG_QETH_IPV6
1470 static void
1471 qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev)
1472 {
1473         struct qeth_ipaddr *ipm;
1474         struct ifmcaddr6 *im6;
1475         struct qeth_ipaddr *tmp;
1476         char buf[MAX_ADDR_LEN];
1477
1478         QETH_CARD_TEXT(card, 4, "addmc6");
1479
1480         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1481                 if (!tmp)
1482                         return;
1483
1484         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1485                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1486
1487                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1488                 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1489                        sizeof(struct in6_addr));
1490                 tmp->is_multicast = 1;
1491
1492                 ipm = qeth_l3_ip_from_hash(card, tmp);
1493                 if (ipm) {
1494                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1495                         continue;
1496                 }
1497
1498                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1499                 if (!ipm)
1500                         continue;
1501
1502                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1503                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1504                        sizeof(struct in6_addr));
1505                 ipm->is_multicast = 1;
1506                 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1507                 hash_add(card->ip_mc_htable,
1508                                 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1509
1510         }
1511         kfree(tmp);
1512 }
1513
1514 /* called with rcu_read_lock */
1515 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1516 {
1517         struct inet6_dev *in_dev;
1518         u16 vid;
1519
1520         QETH_CARD_TEXT(card, 4, "admc6vl");
1521
1522         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1523                 return;
1524
1525         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1526                 struct net_device *netdev;
1527
1528                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1529                                               vid);
1530                 if (netdev == NULL ||
1531                     !(netdev->flags & IFF_UP))
1532                         continue;
1533                 in_dev = in6_dev_get(netdev);
1534                 if (!in_dev)
1535                         continue;
1536                 read_lock_bh(&in_dev->lock);
1537                 qeth_l3_add_mc6_to_hash(card, in_dev);
1538                 read_unlock_bh(&in_dev->lock);
1539                 in6_dev_put(in_dev);
1540         }
1541 }
1542
1543 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1544 {
1545         struct inet6_dev *in6_dev;
1546
1547         QETH_CARD_TEXT(card, 4, "chkmcv6");
1548
1549         if (!qeth_is_supported(card, IPA_IPV6))
1550                 return ;
1551         in6_dev = in6_dev_get(card->dev);
1552         if (!in6_dev)
1553                 return;
1554
1555         rcu_read_lock();
1556         read_lock_bh(&in6_dev->lock);
1557         qeth_l3_add_mc6_to_hash(card, in6_dev);
1558         qeth_l3_add_vlan_mc6(card);
1559         read_unlock_bh(&in6_dev->lock);
1560         rcu_read_unlock();
1561         in6_dev_put(in6_dev);
1562 }
1563 #endif /* CONFIG_QETH_IPV6 */
1564
1565 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1566                         unsigned short vid)
1567 {
1568         struct in_device *in_dev;
1569         struct in_ifaddr *ifa;
1570         struct qeth_ipaddr *addr;
1571         struct net_device *netdev;
1572
1573         QETH_CARD_TEXT(card, 4, "frvaddr4");
1574
1575         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1576         if (!netdev)
1577                 return;
1578         in_dev = in_dev_get(netdev);
1579         if (!in_dev)
1580                 return;
1581
1582         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1583         if (!addr)
1584                 return;
1585
1586         spin_lock_bh(&card->ip_lock);
1587
1588         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1589                 addr->u.a4.addr = ifa->ifa_address;
1590                 addr->u.a4.mask = ifa->ifa_mask;
1591                 addr->type = QETH_IP_TYPE_NORMAL;
1592                 qeth_l3_delete_ip(card, addr);
1593         }
1594
1595         spin_unlock_bh(&card->ip_lock);
1596
1597         kfree(addr);
1598         in_dev_put(in_dev);
1599 }
1600
1601 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1602                         unsigned short vid)
1603 {
1604 #ifdef CONFIG_QETH_IPV6
1605         struct inet6_dev *in6_dev;
1606         struct inet6_ifaddr *ifa;
1607         struct qeth_ipaddr *addr;
1608         struct net_device *netdev;
1609
1610         QETH_CARD_TEXT(card, 4, "frvaddr6");
1611
1612         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1613         if (!netdev)
1614                 return;
1615
1616         in6_dev = in6_dev_get(netdev);
1617         if (!in6_dev)
1618                 return;
1619
1620         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1621         if (!addr)
1622                 return;
1623
1624         spin_lock_bh(&card->ip_lock);
1625
1626         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1627                 memcpy(&addr->u.a6.addr, &ifa->addr,
1628                        sizeof(struct in6_addr));
1629                 addr->u.a6.pfxlen = ifa->prefix_len;
1630                 addr->type = QETH_IP_TYPE_NORMAL;
1631                 qeth_l3_delete_ip(card, addr);
1632         }
1633
1634         spin_unlock_bh(&card->ip_lock);
1635
1636         kfree(addr);
1637         in6_dev_put(in6_dev);
1638 #endif /* CONFIG_QETH_IPV6 */
1639 }
1640
1641 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1642                         unsigned short vid)
1643 {
1644         rcu_read_lock();
1645         qeth_l3_free_vlan_addresses4(card, vid);
1646         qeth_l3_free_vlan_addresses6(card, vid);
1647         rcu_read_unlock();
1648 }
1649
1650 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1651                                    __be16 proto, u16 vid)
1652 {
1653         struct qeth_card *card = dev->ml_priv;
1654
1655         set_bit(vid, card->active_vlans);
1656         return 0;
1657 }
1658
1659 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1660                                     __be16 proto, u16 vid)
1661 {
1662         struct qeth_card *card = dev->ml_priv;
1663
1664         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1665
1666         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1667                 QETH_CARD_TEXT(card, 3, "kidREC");
1668                 return 0;
1669         }
1670         /* unregister IP addresses of vlan device */
1671         qeth_l3_free_vlan_addresses(card, vid);
1672         clear_bit(vid, card->active_vlans);
1673         qeth_l3_set_multicast_list(card->dev);
1674         return 0;
1675 }
1676
1677 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1678                         struct sk_buff *skb, struct qeth_hdr *hdr,
1679                         unsigned short *vlan_id)
1680 {
1681         __be16 prot;
1682         struct iphdr *ip_hdr;
1683         unsigned char tg_addr[MAX_ADDR_LEN];
1684         int is_vlan = 0;
1685
1686         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1687                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1688                               ETH_P_IP);
1689                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1690                 case QETH_CAST_MULTICAST:
1691                         switch (prot) {
1692 #ifdef CONFIG_QETH_IPV6
1693                         case __constant_htons(ETH_P_IPV6):
1694                                 ndisc_mc_map((struct in6_addr *)
1695                                      skb->data + 24,
1696                                      tg_addr, card->dev, 0);
1697                                 break;
1698 #endif
1699                         case __constant_htons(ETH_P_IP):
1700                                 ip_hdr = (struct iphdr *)skb->data;
1701                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1702                                 break;
1703                         default:
1704                                 memcpy(tg_addr, card->dev->broadcast,
1705                                         card->dev->addr_len);
1706                         }
1707                         card->stats.multicast++;
1708                         skb->pkt_type = PACKET_MULTICAST;
1709                         break;
1710                 case QETH_CAST_BROADCAST:
1711                         memcpy(tg_addr, card->dev->broadcast,
1712                                 card->dev->addr_len);
1713                         card->stats.multicast++;
1714                         skb->pkt_type = PACKET_BROADCAST;
1715                         break;
1716                 case QETH_CAST_UNICAST:
1717                 case QETH_CAST_ANYCAST:
1718                 case QETH_CAST_NOCAST:
1719                 default:
1720                         if (card->options.sniffer)
1721                                 skb->pkt_type = PACKET_OTHERHOST;
1722                         else
1723                                 skb->pkt_type = PACKET_HOST;
1724                         memcpy(tg_addr, card->dev->dev_addr,
1725                                 card->dev->addr_len);
1726                 }
1727                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1728                         card->dev->header_ops->create(skb, card->dev, prot,
1729                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1730                                 card->dev->addr_len);
1731                 else
1732                         card->dev->header_ops->create(skb, card->dev, prot,
1733                                 tg_addr, "FAKELL", card->dev->addr_len);
1734         }
1735
1736         skb->protocol = eth_type_trans(skb, card->dev);
1737
1738         if (hdr->hdr.l3.ext_flags &
1739             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1740                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1741                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1742                 is_vlan = 1;
1743         }
1744
1745         if (card->dev->features & NETIF_F_RXCSUM) {
1746                 if ((hdr->hdr.l3.ext_flags &
1747                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1748                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1749                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1750                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1751                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1752                 else
1753                         skb->ip_summed = CHECKSUM_NONE;
1754         } else
1755                 skb->ip_summed = CHECKSUM_NONE;
1756         return is_vlan;
1757 }
1758
1759 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1760                                 int budget, int *done)
1761 {
1762         int work_done = 0;
1763         struct sk_buff *skb;
1764         struct qeth_hdr *hdr;
1765         __u16 vlan_tag = 0;
1766         int is_vlan;
1767         unsigned int len;
1768         __u16 magic;
1769
1770         *done = 0;
1771         WARN_ON_ONCE(!budget);
1772         while (budget) {
1773                 skb = qeth_core_get_next_skb(card,
1774                         &card->qdio.in_q->bufs[card->rx.b_index],
1775                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1776                 if (!skb) {
1777                         *done = 1;
1778                         break;
1779                 }
1780                 skb->dev = card->dev;
1781                 switch (hdr->hdr.l3.id) {
1782                 case QETH_HEADER_TYPE_LAYER3:
1783                         magic = *(__u16 *)skb->data;
1784                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1785                             (magic == ETH_P_AF_IUCV)) {
1786                                 skb->protocol = ETH_P_AF_IUCV;
1787                                 skb->pkt_type = PACKET_HOST;
1788                                 skb->mac_header = NET_SKB_PAD;
1789                                 skb->dev = card->dev;
1790                                 len = skb->len;
1791                                 card->dev->header_ops->create(skb, card->dev, 0,
1792                                         card->dev->dev_addr, "FAKELL",
1793                                         card->dev->addr_len);
1794                                 netif_receive_skb(skb);
1795                         } else {
1796                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1797                                                       &vlan_tag);
1798                                 len = skb->len;
1799                                 if (is_vlan && !card->options.sniffer)
1800                                         __vlan_hwaccel_put_tag(skb,
1801                                                 htons(ETH_P_8021Q), vlan_tag);
1802                                 napi_gro_receive(&card->napi, skb);
1803                         }
1804                         break;
1805                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1806                         skb->pkt_type = PACKET_HOST;
1807                         skb->protocol = eth_type_trans(skb, skb->dev);
1808                         len = skb->len;
1809                         netif_receive_skb(skb);
1810                         break;
1811                 default:
1812                         dev_kfree_skb_any(skb);
1813                         QETH_CARD_TEXT(card, 3, "inbunkno");
1814                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1815                         continue;
1816                 }
1817                 work_done++;
1818                 budget--;
1819                 card->stats.rx_packets++;
1820                 card->stats.rx_bytes += len;
1821         }
1822         return work_done;
1823 }
1824
1825 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1826 {
1827         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1828         int work_done = 0;
1829         struct qeth_qdio_buffer *buffer;
1830         int done;
1831         int new_budget = budget;
1832
1833         if (card->options.performance_stats) {
1834                 card->perf_stats.inbound_cnt++;
1835                 card->perf_stats.inbound_start_time = qeth_get_micros();
1836         }
1837
1838         while (1) {
1839                 if (!card->rx.b_count) {
1840                         card->rx.qdio_err = 0;
1841                         card->rx.b_count = qdio_get_next_buffers(
1842                                 card->data.ccwdev, 0, &card->rx.b_index,
1843                                 &card->rx.qdio_err);
1844                         if (card->rx.b_count <= 0) {
1845                                 card->rx.b_count = 0;
1846                                 break;
1847                         }
1848                         card->rx.b_element =
1849                                 &card->qdio.in_q->bufs[card->rx.b_index]
1850                                 .buffer->element[0];
1851                         card->rx.e_offset = 0;
1852                 }
1853
1854                 while (card->rx.b_count) {
1855                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
1856                         if (!(card->rx.qdio_err &&
1857                             qeth_check_qdio_errors(card, buffer->buffer,
1858                             card->rx.qdio_err, "qinerr")))
1859                                 work_done += qeth_l3_process_inbound_buffer(
1860                                         card, new_budget, &done);
1861                         else
1862                                 done = 1;
1863
1864                         if (done) {
1865                                 if (card->options.performance_stats)
1866                                         card->perf_stats.bufs_rec++;
1867                                 qeth_put_buffer_pool_entry(card,
1868                                         buffer->pool_entry);
1869                                 qeth_queue_input_buffer(card, card->rx.b_index);
1870                                 card->rx.b_count--;
1871                                 if (card->rx.b_count) {
1872                                         card->rx.b_index =
1873                                                 (card->rx.b_index + 1) %
1874                                                 QDIO_MAX_BUFFERS_PER_Q;
1875                                         card->rx.b_element =
1876                                                 &card->qdio.in_q
1877                                                 ->bufs[card->rx.b_index]
1878                                                 .buffer->element[0];
1879                                         card->rx.e_offset = 0;
1880                                 }
1881                         }
1882
1883                         if (work_done >= budget)
1884                                 goto out;
1885                         else
1886                                 new_budget = budget - work_done;
1887                 }
1888         }
1889
1890         napi_complete(napi);
1891         if (qdio_start_irq(card->data.ccwdev, 0))
1892                 napi_schedule(&card->napi);
1893 out:
1894         if (card->options.performance_stats)
1895                 card->perf_stats.inbound_time += qeth_get_micros() -
1896                         card->perf_stats.inbound_start_time;
1897         return work_done;
1898 }
1899
1900 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1901                         struct qeth_card *card)
1902 {
1903         int rc = 0;
1904         u16 vid;
1905
1906         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1907                 struct net_device *netdev;
1908
1909                 rcu_read_lock();
1910                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1911                                               vid);
1912                 rcu_read_unlock();
1913                 if (netdev == dev) {
1914                         rc = QETH_VLAN_CARD;
1915                         break;
1916                 }
1917         }
1918
1919         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
1920                 return 0;
1921
1922         return rc;
1923 }
1924
1925 static int qeth_l3_verify_dev(struct net_device *dev)
1926 {
1927         struct qeth_card *card;
1928         int rc = 0;
1929         unsigned long flags;
1930
1931         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
1932         list_for_each_entry(card, &qeth_core_card_list.list, list) {
1933                 if (card->dev == dev) {
1934                         rc = QETH_REAL_CARD;
1935                         break;
1936                 }
1937                 rc = qeth_l3_verify_vlan_dev(dev, card);
1938                 if (rc)
1939                         break;
1940         }
1941         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
1942
1943         return rc;
1944 }
1945
1946 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
1947 {
1948         struct qeth_card *card = NULL;
1949         int rc;
1950
1951         rc = qeth_l3_verify_dev(dev);
1952         if (rc == QETH_REAL_CARD)
1953                 card = dev->ml_priv;
1954         else if (rc == QETH_VLAN_CARD)
1955                 card = vlan_dev_real_dev(dev)->ml_priv;
1956         if (card && card->options.layer2)
1957                 card = NULL;
1958         if (card)
1959                 QETH_CARD_TEXT_(card, 4, "%d", rc);
1960         return card ;
1961 }
1962
1963 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1964 {
1965         QETH_DBF_TEXT(SETUP, 2, "stopcard");
1966         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1967
1968         qeth_set_allowed_threads(card, 0, 1);
1969         if (card->options.sniffer &&
1970             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1971                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1972         if (card->read.state == CH_STATE_UP &&
1973             card->write.state == CH_STATE_UP &&
1974             (card->state == CARD_STATE_UP)) {
1975                 if (recovery_mode)
1976                         qeth_l3_stop(card->dev);
1977                 else {
1978                         rtnl_lock();
1979                         dev_close(card->dev);
1980                         rtnl_unlock();
1981                 }
1982                 card->state = CARD_STATE_SOFTSETUP;
1983         }
1984         if (card->state == CARD_STATE_SOFTSETUP) {
1985                 qeth_l3_clear_ip_htable(card, 1);
1986                 qeth_clear_ipacmd_list(card);
1987                 card->state = CARD_STATE_HARDSETUP;
1988         }
1989         if (card->state == CARD_STATE_HARDSETUP) {
1990                 qeth_qdio_clear_card(card, 0);
1991                 qeth_clear_qdio_buffers(card);
1992                 qeth_clear_working_pool_list(card);
1993                 card->state = CARD_STATE_DOWN;
1994         }
1995         if (card->state == CARD_STATE_DOWN) {
1996                 qeth_clear_cmd_buffers(&card->read);
1997                 qeth_clear_cmd_buffers(&card->write);
1998         }
1999 }
2000
2001 /*
2002  * test for and Switch promiscuous mode (on or off)
2003  *  either for guestlan or HiperSocket Sniffer
2004  */
2005 static void
2006 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2007 {
2008         struct net_device *dev = card->dev;
2009
2010         if (((dev->flags & IFF_PROMISC) &&
2011              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2012             (!(dev->flags & IFF_PROMISC) &&
2013              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2014                 return;
2015
2016         if (card->info.guestlan) {              /* Guestlan trace */
2017                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2018                         qeth_setadp_promisc_mode(card);
2019         } else if (card->options.sniffer &&     /* HiperSockets trace */
2020                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2021                 if (dev->flags & IFF_PROMISC) {
2022                         QETH_CARD_TEXT(card, 3, "+promisc");
2023                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2024                 } else {
2025                         QETH_CARD_TEXT(card, 3, "-promisc");
2026                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2027                 }
2028         }
2029 }
2030
2031 static void qeth_l3_set_multicast_list(struct net_device *dev)
2032 {
2033         struct qeth_card *card = dev->ml_priv;
2034
2035         QETH_CARD_TEXT(card, 3, "setmulti");
2036         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2037             (card->state != CARD_STATE_UP))
2038                 return;
2039         if (!card->options.sniffer) {
2040
2041                 spin_lock_bh(&card->mclock);
2042
2043                 qeth_l3_mark_all_mc_to_be_deleted(card);
2044
2045                 qeth_l3_add_multicast_ipv4(card);
2046 #ifdef CONFIG_QETH_IPV6
2047                 qeth_l3_add_multicast_ipv6(card);
2048 #endif
2049                 qeth_l3_delete_nonused_mc(card);
2050                 qeth_l3_add_all_new_mc(card);
2051
2052                 spin_unlock_bh(&card->mclock);
2053
2054                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2055                         return;
2056         }
2057         qeth_l3_handle_promisc_mode(card);
2058 }
2059
2060 static const char *qeth_l3_arp_get_error_cause(int *rc)
2061 {
2062         switch (*rc) {
2063         case QETH_IPA_ARP_RC_FAILED:
2064                 *rc = -EIO;
2065                 return "operation failed";
2066         case QETH_IPA_ARP_RC_NOTSUPP:
2067                 *rc = -EOPNOTSUPP;
2068                 return "operation not supported";
2069         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2070                 *rc = -EINVAL;
2071                 return "argument out of range";
2072         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2073                 *rc = -EOPNOTSUPP;
2074                 return "query operation not supported";
2075         case QETH_IPA_ARP_RC_Q_NO_DATA:
2076                 *rc = -ENOENT;
2077                 return "no query data available";
2078         default:
2079                 return "unknown error";
2080         }
2081 }
2082
2083 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2084 {
2085         int tmp;
2086         int rc;
2087
2088         QETH_CARD_TEXT(card, 3, "arpstnoe");
2089
2090         /*
2091          * currently GuestLAN only supports the ARP assist function
2092          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2093          * thus we say EOPNOTSUPP for this ARP function
2094          */
2095         if (card->info.guestlan)
2096                 return -EOPNOTSUPP;
2097         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2098                 return -EOPNOTSUPP;
2099         }
2100         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2101                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2102                                           no_entries);
2103         if (rc) {
2104                 tmp = rc;
2105                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2106                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2107                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2108         }
2109         return rc;
2110 }
2111
2112 static __u32 get_arp_entry_size(struct qeth_card *card,
2113                         struct qeth_arp_query_data *qdata,
2114                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2115 {
2116         __u32 rc;
2117         __u8 is_hsi;
2118
2119         is_hsi = qdata->reply_bits == 5;
2120         if (type->ip == QETHARP_IP_ADDR_V4) {
2121                 QETH_CARD_TEXT(card, 4, "arpev4");
2122                 if (strip_entries) {
2123                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2124                                 sizeof(struct qeth_arp_qi_entry7_short);
2125                 } else {
2126                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2127                                 sizeof(struct qeth_arp_qi_entry7);
2128                 }
2129         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2130                 QETH_CARD_TEXT(card, 4, "arpev6");
2131                 if (strip_entries) {
2132                         rc = is_hsi ?
2133                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2134                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2135                 } else {
2136                         rc = is_hsi ?
2137                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2138                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2139                 }
2140         } else {
2141                 QETH_CARD_TEXT(card, 4, "arpinv");
2142                 rc = 0;
2143         }
2144
2145         return rc;
2146 }
2147
2148 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2149 {
2150         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2151                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2152 }
2153
2154 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2155                 struct qeth_reply *reply, unsigned long data)
2156 {
2157         struct qeth_ipa_cmd *cmd;
2158         struct qeth_arp_query_data *qdata;
2159         struct qeth_arp_query_info *qinfo;
2160         int i;
2161         int e;
2162         int entrybytes_done;
2163         int stripped_bytes;
2164         __u8 do_strip_entries;
2165
2166         QETH_CARD_TEXT(card, 3, "arpquecb");
2167
2168         qinfo = (struct qeth_arp_query_info *) reply->param;
2169         cmd = (struct qeth_ipa_cmd *) data;
2170         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2171         if (cmd->hdr.return_code) {
2172                 QETH_CARD_TEXT(card, 4, "arpcberr");
2173                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2174                 return 0;
2175         }
2176         if (cmd->data.setassparms.hdr.return_code) {
2177                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2178                 QETH_CARD_TEXT(card, 4, "setaperr");
2179                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2180                 return 0;
2181         }
2182         qdata = &cmd->data.setassparms.data.query_arp;
2183         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2184
2185         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2186         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2187         entrybytes_done = 0;
2188         for (e = 0; e < qdata->no_entries; ++e) {
2189                 char *cur_entry;
2190                 __u32 esize;
2191                 struct qeth_arp_entrytype *etype;
2192
2193                 cur_entry = &qdata->data + entrybytes_done;
2194                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2195                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2196                         QETH_CARD_TEXT(card, 4, "pmis");
2197                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2198                         break;
2199                 }
2200                 esize = get_arp_entry_size(card, qdata, etype,
2201                         do_strip_entries);
2202                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2203                 if (!esize)
2204                         break;
2205
2206                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2207                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2208                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2209                         goto out_error;
2210                 }
2211
2212                 memcpy(qinfo->udata + qinfo->udata_offset,
2213                         &qdata->data + entrybytes_done + stripped_bytes,
2214                         esize);
2215                 entrybytes_done += esize + stripped_bytes;
2216                 qinfo->udata_offset += esize;
2217                 ++qinfo->no_entries;
2218         }
2219         /* check if all replies received ... */
2220         if (cmd->data.setassparms.hdr.seq_no <
2221             cmd->data.setassparms.hdr.number_of_replies)
2222                 return 1;
2223         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2224         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2225         /* keep STRIP_ENTRIES flag so the user program can distinguish
2226          * stripped entries from normal ones */
2227         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2228                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2229         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2230         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2231         return 0;
2232 out_error:
2233         i = 0;
2234         memcpy(qinfo->udata, &i, 4);
2235         return 0;
2236 }
2237
2238 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2239                 struct qeth_cmd_buffer *iob, int len,
2240                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2241                         unsigned long),
2242                 void *reply_param)
2243 {
2244         QETH_CARD_TEXT(card, 4, "sendarp");
2245
2246         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2247         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2248                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2249         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2250                                       reply_cb, reply_param);
2251 }
2252
2253 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2254         enum qeth_prot_versions prot,
2255         struct qeth_arp_query_info *qinfo)
2256 {
2257         struct qeth_cmd_buffer *iob;
2258         struct qeth_ipa_cmd *cmd;
2259         int tmp;
2260         int rc;
2261
2262         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2263
2264         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2265                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2266                                        sizeof(struct qeth_arp_query_data)
2267                                                 - sizeof(char),
2268                                        prot);
2269         if (!iob)
2270                 return -ENOMEM;
2271         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2272         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2273         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2274         cmd->data.setassparms.data.query_arp.no_entries = 0;
2275         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2276                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2277                            qeth_l3_arp_query_cb, (void *)qinfo);
2278         if (rc) {
2279                 tmp = rc;
2280                 QETH_DBF_MESSAGE(2,
2281                         "Error while querying ARP cache on %s: %s "
2282                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2283                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2284         }
2285
2286         return rc;
2287 }
2288
2289 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2290 {
2291         struct qeth_arp_query_info qinfo = {0, };
2292         int rc;
2293
2294         QETH_CARD_TEXT(card, 3, "arpquery");
2295
2296         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2297                                IPA_ARP_PROCESSING)) {
2298                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2299                 rc = -EOPNOTSUPP;
2300                 goto out;
2301         }
2302         /* get size of userspace buffer and mask_bits -> 6 bytes */
2303         if (copy_from_user(&qinfo, udata, 6)) {
2304                 rc = -EFAULT;
2305                 goto out;
2306         }
2307         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2308         if (!qinfo.udata) {
2309                 rc = -ENOMEM;
2310                 goto out;
2311         }
2312         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2313         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2314         if (rc) {
2315                 if (copy_to_user(udata, qinfo.udata, 4))
2316                         rc = -EFAULT;
2317                 goto free_and_out;
2318         }
2319 #ifdef CONFIG_QETH_IPV6
2320         if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2321                 /* fails in case of GuestLAN QDIO mode */
2322                 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
2323         }
2324 #endif
2325         if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2326                 QETH_CARD_TEXT(card, 4, "qactf");
2327                 rc = -EFAULT;
2328                 goto free_and_out;
2329         }
2330         QETH_CARD_TEXT(card, 4, "qacts");
2331
2332 free_and_out:
2333         kfree(qinfo.udata);
2334 out:
2335         return rc;
2336 }
2337
2338 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2339                                 struct qeth_arp_cache_entry *entry)
2340 {
2341         struct qeth_cmd_buffer *iob;
2342         char buf[16];
2343         int tmp;
2344         int rc;
2345
2346         QETH_CARD_TEXT(card, 3, "arpadent");
2347
2348         /*
2349          * currently GuestLAN only supports the ARP assist function
2350          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2351          * thus we say EOPNOTSUPP for this ARP function
2352          */
2353         if (card->info.guestlan)
2354                 return -EOPNOTSUPP;
2355         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2356                 return -EOPNOTSUPP;
2357         }
2358
2359         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2360                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2361                                        sizeof(struct qeth_arp_cache_entry),
2362                                        QETH_PROT_IPV4);
2363         if (!iob)
2364                 return -ENOMEM;
2365         rc = qeth_send_setassparms(card, iob,
2366                                    sizeof(struct qeth_arp_cache_entry),
2367                                    (unsigned long) entry,
2368                                    qeth_setassparms_cb, NULL);
2369         if (rc) {
2370                 tmp = rc;
2371                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2372                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2373                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2374                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2375         }
2376         return rc;
2377 }
2378
2379 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2380                                 struct qeth_arp_cache_entry *entry)
2381 {
2382         struct qeth_cmd_buffer *iob;
2383         char buf[16] = {0, };
2384         int tmp;
2385         int rc;
2386
2387         QETH_CARD_TEXT(card, 3, "arprment");
2388
2389         /*
2390          * currently GuestLAN only supports the ARP assist function
2391          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2392          * thus we say EOPNOTSUPP for this ARP function
2393          */
2394         if (card->info.guestlan)
2395                 return -EOPNOTSUPP;
2396         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2397                 return -EOPNOTSUPP;
2398         }
2399         memcpy(buf, entry, 12);
2400         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2401                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2402                                        12,
2403                                        QETH_PROT_IPV4);
2404         if (!iob)
2405                 return -ENOMEM;
2406         rc = qeth_send_setassparms(card, iob,
2407                                    12, (unsigned long)buf,
2408                                    qeth_setassparms_cb, NULL);
2409         if (rc) {
2410                 tmp = rc;
2411                 memset(buf, 0, 16);
2412                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2413                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2414                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2415                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2416         }
2417         return rc;
2418 }
2419
2420 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2421 {
2422         int rc;
2423         int tmp;
2424
2425         QETH_CARD_TEXT(card, 3, "arpflush");
2426
2427         /*
2428          * currently GuestLAN only supports the ARP assist function
2429          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2430          * thus we say EOPNOTSUPP for this ARP function
2431         */
2432         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2433                 return -EOPNOTSUPP;
2434         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2435                 return -EOPNOTSUPP;
2436         }
2437         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2438                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2439         if (rc) {
2440                 tmp = rc;
2441                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2442                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2443                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2444         }
2445         return rc;
2446 }
2447
2448 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2449 {
2450         struct qeth_card *card = dev->ml_priv;
2451         struct qeth_arp_cache_entry arp_entry;
2452         struct mii_ioctl_data *mii_data;
2453         int rc = 0;
2454
2455         if (!card)
2456                 return -ENODEV;
2457
2458         if (!qeth_card_hw_is_reachable(card))
2459                 return -ENODEV;
2460
2461         switch (cmd) {
2462         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2463                 if (!capable(CAP_NET_ADMIN)) {
2464                         rc = -EPERM;
2465                         break;
2466                 }
2467                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2468                 break;
2469         case SIOC_QETH_ARP_QUERY_INFO:
2470                 if (!capable(CAP_NET_ADMIN)) {
2471                         rc = -EPERM;
2472                         break;
2473                 }
2474                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2475                 break;
2476         case SIOC_QETH_ARP_ADD_ENTRY:
2477                 if (!capable(CAP_NET_ADMIN)) {
2478                         rc = -EPERM;
2479                         break;
2480                 }
2481                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2482                                    sizeof(struct qeth_arp_cache_entry)))
2483                         rc = -EFAULT;
2484                 else
2485                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2486                 break;
2487         case SIOC_QETH_ARP_REMOVE_ENTRY:
2488                 if (!capable(CAP_NET_ADMIN)) {
2489                         rc = -EPERM;
2490                         break;
2491                 }
2492                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2493                                    sizeof(struct qeth_arp_cache_entry)))
2494                         rc = -EFAULT;
2495                 else
2496                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2497                 break;
2498         case SIOC_QETH_ARP_FLUSH_CACHE:
2499                 if (!capable(CAP_NET_ADMIN)) {
2500                         rc = -EPERM;
2501                         break;
2502                 }
2503                 rc = qeth_l3_arp_flush_cache(card);
2504                 break;
2505         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2506                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2507                 break;
2508         case SIOC_QETH_GET_CARD_TYPE:
2509                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2510                      card->info.type == QETH_CARD_TYPE_OSX) &&
2511                     !card->info.guestlan)
2512                         return 1;
2513                 return 0;
2514                 break;
2515         case SIOCGMIIPHY:
2516                 mii_data = if_mii(rq);
2517                 mii_data->phy_id = 0;
2518                 break;
2519         case SIOCGMIIREG:
2520                 mii_data = if_mii(rq);
2521                 if (mii_data->phy_id != 0)
2522                         rc = -EINVAL;
2523                 else
2524                         mii_data->val_out = qeth_mdio_read(dev,
2525                                                         mii_data->phy_id,
2526                                                         mii_data->reg_num);
2527                 break;
2528         case SIOC_QETH_QUERY_OAT:
2529                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2530                 break;
2531         default:
2532                 rc = -EOPNOTSUPP;
2533         }
2534         if (rc)
2535                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2536         return rc;
2537 }
2538
2539 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2540 {
2541         int cast_type = RTN_UNSPEC;
2542         struct neighbour *n = NULL;
2543         struct dst_entry *dst;
2544
2545         rcu_read_lock();
2546         dst = skb_dst(skb);
2547         if (dst)
2548                 n = dst_neigh_lookup_skb(dst, skb);
2549         if (n) {
2550                 cast_type = n->type;
2551                 rcu_read_unlock();
2552                 neigh_release(n);
2553                 if ((cast_type == RTN_BROADCAST) ||
2554                     (cast_type == RTN_MULTICAST) ||
2555                     (cast_type == RTN_ANYCAST))
2556                         return cast_type;
2557                 else
2558                         return RTN_UNSPEC;
2559         }
2560         rcu_read_unlock();
2561
2562         /* try something else */
2563         if (skb->protocol == ETH_P_IPV6)
2564                 return (skb_network_header(skb)[24] == 0xff) ?
2565                                 RTN_MULTICAST : 0;
2566         else if (skb->protocol == ETH_P_IP)
2567                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2568                                 RTN_MULTICAST : 0;
2569         /* ... */
2570         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2571                 return RTN_BROADCAST;
2572         else {
2573                 u16 hdr_mac;
2574
2575                 hdr_mac = *((u16 *)skb->data);
2576                 /* tr multicast? */
2577                 switch (card->info.link_type) {
2578                 case QETH_LINK_TYPE_HSTR:
2579                 case QETH_LINK_TYPE_LANE_TR:
2580                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2581                             (hdr_mac == QETH_TR_MAC_C))
2582                                 return RTN_MULTICAST;
2583                         break;
2584                 /* eth or so multicast? */
2585                 default:
2586                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2587                             (hdr_mac == QETH_ETH_MAC_V6))
2588                                 return RTN_MULTICAST;
2589                 }
2590         }
2591         return cast_type;
2592 }
2593
2594 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2595                 struct qeth_hdr *hdr, struct sk_buff *skb)
2596 {
2597         char daddr[16];
2598         struct af_iucv_trans_hdr *iucv_hdr;
2599
2600         skb_pull(skb, 14);
2601         card->dev->header_ops->create(skb, card->dev, 0,
2602                                       card->dev->dev_addr, card->dev->dev_addr,
2603                                       card->dev->addr_len);
2604         skb_pull(skb, 14);
2605         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2606         memset(hdr, 0, sizeof(struct qeth_hdr));
2607         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2608         hdr->hdr.l3.ext_flags = 0;
2609         hdr->hdr.l3.length = skb->len;
2610         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2611         memset(daddr, 0, sizeof(daddr));
2612         daddr[0] = 0xfe;
2613         daddr[1] = 0x80;
2614         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2615         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2616 }
2617
2618 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2619                 struct sk_buff *skb, int ipv, int cast_type)
2620 {
2621         struct dst_entry *dst;
2622
2623         memset(hdr, 0, sizeof(struct qeth_hdr));
2624         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2625         hdr->hdr.l3.ext_flags = 0;
2626
2627         /*
2628          * before we're going to overwrite this location with next hop ip.
2629          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2630          */
2631         if (skb_vlan_tag_present(skb)) {
2632                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2633                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2634                 else
2635                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2636                 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2637         }
2638
2639         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2640
2641         rcu_read_lock();
2642         dst = skb_dst(skb);
2643         if (ipv == 4) {
2644                 struct rtable *rt = (struct rtable *) dst;
2645                 __be32 *pkey = &ip_hdr(skb)->daddr;
2646
2647                 if (rt->rt_gateway)
2648                         pkey = &rt->rt_gateway;
2649
2650                 /* IPv4 */
2651                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2652                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2653                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2654         } else if (ipv == 6) {
2655                 struct rt6_info *rt = (struct rt6_info *) dst;
2656                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2657
2658                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2659                         pkey = &rt->rt6i_gateway;
2660
2661                 /* IPv6 */
2662                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2663                 if (card->info.type == QETH_CARD_TYPE_IQD)
2664                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2665                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2666         } else {
2667                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2668                             skb->dev->broadcast, 6)) {
2669                         /* broadcast? */
2670                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2671                                                 QETH_HDR_PASSTHRU;
2672                 } else {
2673                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2674                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2675                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2676                 }
2677         }
2678         rcu_read_unlock();
2679 }
2680
2681 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2682                 struct qeth_hdr *hdr, struct sk_buff *skb)
2683 {
2684         struct iphdr *iph = ip_hdr(skb);
2685
2686         /* tcph->check contains already the pseudo hdr checksum
2687          * so just set the header flags
2688          */
2689         if (iph->protocol == IPPROTO_UDP)
2690                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2691         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2692                 QETH_HDR_EXT_CSUM_HDR_REQ;
2693         iph->check = 0;
2694         if (card->options.performance_stats)
2695                 card->perf_stats.tx_csum++;
2696 }
2697
2698 static void qeth_tso_fill_header(struct qeth_card *card,
2699                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2700 {
2701         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2702         struct tcphdr *tcph = tcp_hdr(skb);
2703         struct iphdr *iph = ip_hdr(skb);
2704         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2705
2706         /*fix header to TSO values ...*/
2707         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2708         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2709         /*set values which are fix for the first approach ...*/
2710         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2711         hdr->ext.imb_hdr_no  = 1;
2712         hdr->ext.hdr_type    = 1;
2713         hdr->ext.hdr_version = 1;
2714         hdr->ext.hdr_len     = 28;
2715         /*insert non-fix values */
2716         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2717         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2718         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2719                                        sizeof(struct qeth_hdr_tso));
2720         tcph->check = 0;
2721         if (skb->protocol == ETH_P_IPV6) {
2722                 ip6h->payload_len = 0;
2723                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2724                                                0, IPPROTO_TCP, 0);
2725         } else {
2726                 /*OSA want us to set these values ...*/
2727                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2728                                          0, IPPROTO_TCP, 0);
2729                 iph->tot_len = 0;
2730                 iph->check = 0;
2731         }
2732 }
2733
2734 /**
2735  * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2736  * @card:                          qeth card structure, to check max. elems.
2737  * @skb:                           SKB address
2738  * @extra_elems:                   extra elems needed, to check against max.
2739  *
2740  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2741  * skb data, including linear part and fragments, but excluding TCP header.
2742  * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2743  * Checks if the result plus extra_elems fits under the limit for the card.
2744  * Returns 0 if it does not.
2745  * Note: extra_elems is not included in the returned result.
2746  */
2747 static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2748                         struct sk_buff *skb, int extra_elems)
2749 {
2750         addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2751         int elements = qeth_get_elements_for_range(
2752                                 tcpdptr,
2753                                 (addr_t)skb->data + skb_headlen(skb)) +
2754                                 qeth_get_elements_for_frags(skb);
2755
2756         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2757                 QETH_DBF_MESSAGE(2,
2758         "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2759                                 elements + extra_elems, skb->len);
2760                 return 0;
2761         }
2762         return elements;
2763 }
2764
2765 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2766 {
2767         int rc;
2768         u16 *tag;
2769         struct qeth_hdr *hdr = NULL;
2770         int hdr_elements = 0;
2771         int elements;
2772         struct qeth_card *card = dev->ml_priv;
2773         struct sk_buff *new_skb = NULL;
2774         int ipv = qeth_get_ip_version(skb);
2775         int cast_type = qeth_l3_get_cast_type(card, skb);
2776         struct qeth_qdio_out_q *queue =
2777                 card->qdio.out_qs[card->qdio.do_prio_queueing
2778                         || (cast_type && card->info.is_multicast_different) ?
2779                         qeth_get_priority_queue(card, skb, ipv, cast_type) :
2780                         card->qdio.default_out_queue];
2781         int tx_bytes = skb->len;
2782         bool use_tso;
2783         int data_offset = -1;
2784         int nr_frags;
2785
2786         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2787              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2788               ((card->options.cq == QETH_CQ_ENABLED) &&
2789                (skb->protocol != ETH_P_AF_IUCV)))) ||
2790             card->options.sniffer)
2791                         goto tx_drop;
2792
2793         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2794                 card->stats.tx_carrier_errors++;
2795                 goto tx_drop;
2796         }
2797
2798         if ((cast_type == RTN_BROADCAST) &&
2799             (card->info.broadcast_capable == 0))
2800                 goto tx_drop;
2801
2802         if (card->options.performance_stats) {
2803                 card->perf_stats.outbound_cnt++;
2804                 card->perf_stats.outbound_start_time = qeth_get_micros();
2805         }
2806
2807         /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2808         use_tso = skb_is_gso(skb) &&
2809                   (qeth_get_ip_protocol(skb) == IPPROTO_TCP) && (ipv == 4);
2810
2811         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2812             !skb_is_nonlinear(skb)) {
2813                 new_skb = skb;
2814                 if (new_skb->protocol == ETH_P_AF_IUCV)
2815                         data_offset = 0;
2816                 else
2817                         data_offset = ETH_HLEN;
2818                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2819                 if (!hdr)
2820                         goto tx_drop;
2821                 hdr_elements++;
2822         } else {
2823                 /* create a clone with writeable headroom */
2824                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2825                                         + VLAN_HLEN);
2826                 if (!new_skb)
2827                         goto tx_drop;
2828         }
2829
2830         if (card->info.type == QETH_CARD_TYPE_IQD) {
2831                 if (data_offset < 0)
2832                         skb_pull(new_skb, ETH_HLEN);
2833         } else {
2834                 if (ipv == 4) {
2835                         skb_pull(new_skb, ETH_HLEN);
2836                 }
2837
2838                 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2839                         skb_push(new_skb, VLAN_HLEN);
2840                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2841                         skb_copy_to_linear_data_offset(new_skb, 4,
2842                                 new_skb->data + 8, 4);
2843                         skb_copy_to_linear_data_offset(new_skb, 8,
2844                                 new_skb->data + 12, 4);
2845                         tag = (u16 *)(new_skb->data + 12);
2846                         *tag = __constant_htons(ETH_P_8021Q);
2847                         *(tag + 1) = htons(skb_vlan_tag_get(new_skb));
2848                 }
2849         }
2850
2851         netif_stop_queue(dev);
2852
2853         /* fix hardware limitation: as long as we do not have sbal
2854          * chaining we can not send long frag lists
2855          */
2856         if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2857             ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2858              (!use_tso && !qeth_get_elements_no(card, new_skb, 0)))) {
2859                 int lin_rc = skb_linearize(new_skb);
2860
2861                 if (card->options.performance_stats) {
2862                         if (lin_rc)
2863                                 card->perf_stats.tx_linfail++;
2864                         else
2865                                 card->perf_stats.tx_lin++;
2866                 }
2867                 if (lin_rc)
2868                         goto tx_drop;
2869         }
2870
2871         if (use_tso) {
2872                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2873                                                 sizeof(struct qeth_hdr_tso));
2874                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2875                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2876                 qeth_tso_fill_header(card, hdr, new_skb);
2877                 hdr_elements++;
2878         } else {
2879                 if (data_offset < 0) {
2880                         hdr = (struct qeth_hdr *)skb_push(new_skb,
2881                                                 sizeof(struct qeth_hdr));
2882                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2883                                                 cast_type);
2884                 } else {
2885                         if (new_skb->protocol == ETH_P_AF_IUCV)
2886                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2887                         else {
2888                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2889                                                         cast_type);
2890                                 hdr->hdr.l3.length = new_skb->len - data_offset;
2891                         }
2892                 }
2893
2894                 if (skb->ip_summed == CHECKSUM_PARTIAL)
2895                         qeth_l3_hdr_csum(card, hdr, new_skb);
2896         }
2897
2898         elements = use_tso ?
2899                    qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2900                    qeth_get_elements_no(card, new_skb, hdr_elements);
2901         if (!elements) {
2902                 if (data_offset >= 0)
2903                         kmem_cache_free(qeth_core_header_cache, hdr);
2904                 goto tx_drop;
2905         }
2906         elements += hdr_elements;
2907
2908         if (card->info.type != QETH_CARD_TYPE_IQD) {
2909                 int len;
2910                 if (use_tso)
2911                         len = ((unsigned long)tcp_hdr(new_skb) +
2912                                 tcp_hdrlen(new_skb)) -
2913                                 (unsigned long)new_skb->data;
2914                 else
2915                         len = sizeof(struct qeth_hdr_layer3);
2916
2917                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2918                         goto tx_drop;
2919                 rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements);
2920         } else
2921                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2922                                         elements, data_offset, 0);
2923
2924         if (!rc) {
2925                 card->stats.tx_packets++;
2926                 card->stats.tx_bytes += tx_bytes;
2927                 if (new_skb != skb)
2928                         dev_kfree_skb_any(skb);
2929                 if (card->options.performance_stats) {
2930                         nr_frags = skb_shinfo(new_skb)->nr_frags;
2931                         if (use_tso) {
2932                                 card->perf_stats.large_send_bytes += tx_bytes;
2933                                 card->perf_stats.large_send_cnt++;
2934                         }
2935                         if (nr_frags) {
2936                                 card->perf_stats.sg_skbs_sent++;
2937                                 /* nr_frags + skb->data */
2938                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
2939                         }
2940                 }
2941                 rc = NETDEV_TX_OK;
2942         } else {
2943                 if (data_offset >= 0)
2944                         kmem_cache_free(qeth_core_header_cache, hdr);
2945
2946                 if (rc == -EBUSY) {
2947                         if (new_skb != skb)
2948                                 dev_kfree_skb_any(new_skb);
2949                         return NETDEV_TX_BUSY;
2950                 } else
2951                         goto tx_drop;
2952         }
2953
2954         netif_wake_queue(dev);
2955         if (card->options.performance_stats)
2956                 card->perf_stats.outbound_time += qeth_get_micros() -
2957                         card->perf_stats.outbound_start_time;
2958         return rc;
2959
2960 tx_drop:
2961         card->stats.tx_dropped++;
2962         card->stats.tx_errors++;
2963         if ((new_skb != skb) && new_skb)
2964                 dev_kfree_skb_any(new_skb);
2965         dev_kfree_skb_any(skb);
2966         netif_wake_queue(dev);
2967         return NETDEV_TX_OK;
2968 }
2969
2970 static int __qeth_l3_open(struct net_device *dev)
2971 {
2972         struct qeth_card *card = dev->ml_priv;
2973         int rc = 0;
2974
2975         QETH_CARD_TEXT(card, 4, "qethopen");
2976         if (card->state == CARD_STATE_UP)
2977                 return rc;
2978         if (card->state != CARD_STATE_SOFTSETUP)
2979                 return -ENODEV;
2980         card->data.state = CH_STATE_UP;
2981         card->state = CARD_STATE_UP;
2982         netif_start_queue(dev);
2983
2984         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2985                 napi_enable(&card->napi);
2986                 napi_schedule(&card->napi);
2987         } else
2988                 rc = -EIO;
2989         return rc;
2990 }
2991
2992 static int qeth_l3_open(struct net_device *dev)
2993 {
2994         struct qeth_card *card = dev->ml_priv;
2995
2996         QETH_CARD_TEXT(card, 5, "qethope_");
2997         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2998                 QETH_CARD_TEXT(card, 3, "openREC");
2999                 return -ERESTARTSYS;
3000         }
3001         return __qeth_l3_open(dev);
3002 }
3003
3004 static int qeth_l3_stop(struct net_device *dev)
3005 {
3006         struct qeth_card *card = dev->ml_priv;
3007
3008         QETH_CARD_TEXT(card, 4, "qethstop");
3009         netif_tx_disable(dev);
3010         if (card->state == CARD_STATE_UP) {
3011                 card->state = CARD_STATE_SOFTSETUP;
3012                 napi_disable(&card->napi);
3013         }
3014         return 0;
3015 }
3016
3017 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3018         .get_link = ethtool_op_get_link,
3019         .get_strings = qeth_core_get_strings,
3020         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3021         .get_sset_count = qeth_core_get_sset_count,
3022         .get_drvinfo = qeth_core_get_drvinfo,
3023         .get_settings = qeth_core_ethtool_get_settings,
3024 };
3025
3026 /*
3027  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3028  * NOARP on the netdevice is no option because it also turns off neighbor
3029  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3030  * arp resolution but we want the hard header (packet socket will work
3031  * e.g. tcpdump)
3032  */
3033 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3034 {
3035         n->nud_state = NUD_NOARP;
3036         memcpy(n->ha, "FAKELL", 6);
3037         n->output = n->ops->connected_output;
3038         return 0;
3039 }
3040
3041 static int
3042 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3043 {
3044         if (np->tbl->family == AF_INET)
3045                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3046
3047         return 0;
3048 }
3049
3050 static const struct net_device_ops qeth_l3_netdev_ops = {
3051         .ndo_open               = qeth_l3_open,
3052         .ndo_stop               = qeth_l3_stop,
3053         .ndo_get_stats          = qeth_get_stats,
3054         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3055         .ndo_validate_addr      = eth_validate_addr,
3056         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3057         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3058         .ndo_change_mtu         = qeth_change_mtu,
3059         .ndo_fix_features       = qeth_fix_features,
3060         .ndo_set_features       = qeth_set_features,
3061         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3062         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3063         .ndo_tx_timeout         = qeth_tx_timeout,
3064 };
3065
3066 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3067         .ndo_open               = qeth_l3_open,
3068         .ndo_stop               = qeth_l3_stop,
3069         .ndo_get_stats          = qeth_get_stats,
3070         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3071         .ndo_validate_addr      = eth_validate_addr,
3072         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3073         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3074         .ndo_change_mtu         = qeth_change_mtu,
3075         .ndo_fix_features       = qeth_fix_features,
3076         .ndo_set_features       = qeth_set_features,
3077         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3078         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3079         .ndo_tx_timeout         = qeth_tx_timeout,
3080         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3081 };
3082
3083 static int qeth_l3_setup_netdev(struct qeth_card *card)
3084 {
3085         int rc;
3086
3087         if (card->info.type == QETH_CARD_TYPE_OSD ||
3088             card->info.type == QETH_CARD_TYPE_OSX) {
3089                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3090                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3091                         pr_info("qeth_l3: ignoring TR device\n");
3092                         return -ENODEV;
3093                 } else {
3094                         card->dev = alloc_etherdev(0);
3095                         if (!card->dev)
3096                                 return -ENODEV;
3097                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3098
3099                         /*IPv6 address autoconfiguration stuff*/
3100                         qeth_l3_get_unique_id(card);
3101                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3102                                 card->dev->dev_id = card->info.unique_id &
3103                                                          0xffff;
3104                         if (!card->info.guestlan) {
3105                                 card->dev->hw_features = NETIF_F_SG |
3106                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3107                                         NETIF_F_TSO;
3108                                 card->dev->vlan_features = NETIF_F_SG |
3109                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3110                                         NETIF_F_TSO;
3111                                 card->dev->features = NETIF_F_SG;
3112                         }
3113                 }
3114         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3115                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
3116                                          ether_setup);
3117                 if (!card->dev)
3118                         return -ENODEV;
3119                 card->dev->flags |= IFF_NOARP;
3120                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3121                 rc = qeth_l3_iqd_read_initial_mac(card);
3122                 if (rc)
3123                         return rc;
3124                 if (card->options.hsuid[0])
3125                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3126         } else
3127                 return -ENODEV;
3128
3129         card->dev->ml_priv = card;
3130         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3131         card->dev->mtu = card->info.initial_mtu;
3132         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
3133         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
3134                                 NETIF_F_HW_VLAN_CTAG_RX |
3135                                 NETIF_F_HW_VLAN_CTAG_FILTER;
3136         netif_keep_dst(card->dev);
3137         card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
3138                                   PAGE_SIZE;
3139         card->dev->gso_max_segs = (QETH_MAX_BUFFER_ELEMENTS(card) - 1);
3140
3141         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3142         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3143         netif_carrier_off(card->dev);
3144         return register_netdev(card->dev);
3145 }
3146
3147 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3148 {
3149         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3150
3151         qeth_l3_create_device_attributes(&gdev->dev);
3152         card->options.layer2 = 0;
3153         card->info.hwtrap = 0;
3154         return 0;
3155 }
3156
3157 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3158 {
3159         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3160
3161         qeth_l3_remove_device_attributes(&cgdev->dev);
3162
3163         qeth_set_allowed_threads(card, 0, 1);
3164         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3165
3166         if (cgdev->state == CCWGROUP_ONLINE)
3167                 qeth_l3_set_offline(cgdev);
3168
3169         if (card->dev) {
3170                 netif_napi_del(&card->napi);
3171                 unregister_netdev(card->dev);
3172                 card->dev = NULL;
3173         }
3174
3175         qeth_l3_clear_ip_htable(card, 0);
3176         qeth_l3_clear_ipato_list(card);
3177         return;
3178 }
3179
3180 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3181 {
3182         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3183         int rc = 0;
3184         enum qeth_card_states recover_flag;
3185
3186         mutex_lock(&card->discipline_mutex);
3187         mutex_lock(&card->conf_mutex);
3188         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3189         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3190
3191         recover_flag = card->state;
3192         rc = qeth_core_hardsetup_card(card);
3193         if (rc) {
3194                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3195                 rc = -ENODEV;
3196                 goto out_remove;
3197         }
3198
3199         if (!card->dev && qeth_l3_setup_netdev(card)) {
3200                 rc = -ENODEV;
3201                 goto out_remove;
3202         }
3203
3204         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3205                 if (card->info.hwtrap &&
3206                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3207                         card->info.hwtrap = 0;
3208         } else
3209                 card->info.hwtrap = 0;
3210
3211         card->state = CARD_STATE_HARDSETUP;
3212         memset(&card->rx, 0, sizeof(struct qeth_rx));
3213         qeth_print_status_message(card);
3214
3215         /* softsetup */
3216         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3217
3218         rc = qeth_send_startlan(card);
3219         if (rc) {
3220                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3221                 if (rc == 0xe080) {
3222                         dev_warn(&card->gdev->dev,
3223                                 "The LAN is offline\n");
3224                         card->lan_online = 0;
3225                         goto contin;
3226                 }
3227                 rc = -ENODEV;
3228                 goto out_remove;
3229         } else
3230                 card->lan_online = 1;
3231
3232 contin:
3233         rc = qeth_l3_setadapter_parms(card);
3234         if (rc)
3235                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3236         if (!card->options.sniffer) {
3237                 rc = qeth_l3_start_ipassists(card);
3238                 if (rc) {
3239                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3240                         goto out_remove;
3241                 }
3242                 rc = qeth_l3_setrouting_v4(card);
3243                 if (rc)
3244                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3245                 rc = qeth_l3_setrouting_v6(card);
3246                 if (rc)
3247                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3248         }
3249         netif_tx_disable(card->dev);
3250
3251         rc = qeth_init_qdio_queues(card);
3252         if (rc) {
3253                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3254                 rc = -ENODEV;
3255                 goto out_remove;
3256         }
3257         card->state = CARD_STATE_SOFTSETUP;
3258
3259         qeth_set_allowed_threads(card, 0xffffffff, 0);
3260         qeth_l3_recover_ip(card);
3261         if (card->lan_online)
3262                 netif_carrier_on(card->dev);
3263         else
3264                 netif_carrier_off(card->dev);
3265         if (recover_flag == CARD_STATE_RECOVER) {
3266                 rtnl_lock();
3267                 if (recovery_mode)
3268                         __qeth_l3_open(card->dev);
3269                 else
3270                         dev_open(card->dev);
3271                 qeth_l3_set_multicast_list(card->dev);
3272                 rtnl_unlock();
3273         }
3274         qeth_trace_features(card);
3275         /* let user_space know that device is online */
3276         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3277         mutex_unlock(&card->conf_mutex);
3278         mutex_unlock(&card->discipline_mutex);
3279         return 0;
3280 out_remove:
3281         qeth_l3_stop_card(card, 0);
3282         ccw_device_set_offline(CARD_DDEV(card));
3283         ccw_device_set_offline(CARD_WDEV(card));
3284         ccw_device_set_offline(CARD_RDEV(card));
3285         qdio_free(CARD_DDEV(card));
3286         if (recover_flag == CARD_STATE_RECOVER)
3287                 card->state = CARD_STATE_RECOVER;
3288         else
3289                 card->state = CARD_STATE_DOWN;
3290         mutex_unlock(&card->conf_mutex);
3291         mutex_unlock(&card->discipline_mutex);
3292         return rc;
3293 }
3294
3295 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3296 {
3297         return __qeth_l3_set_online(gdev, 0);
3298 }
3299
3300 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3301                         int recovery_mode)
3302 {
3303         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3304         int rc = 0, rc2 = 0, rc3 = 0;
3305         enum qeth_card_states recover_flag;
3306
3307         mutex_lock(&card->discipline_mutex);
3308         mutex_lock(&card->conf_mutex);
3309         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3310         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3311
3312         if (card->dev && netif_carrier_ok(card->dev))
3313                 netif_carrier_off(card->dev);
3314         recover_flag = card->state;
3315         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3316                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3317                 card->info.hwtrap = 1;
3318         }
3319         qeth_l3_stop_card(card, recovery_mode);
3320         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3321                 rtnl_lock();
3322                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3323                 rtnl_unlock();
3324         }
3325         rc  = ccw_device_set_offline(CARD_DDEV(card));
3326         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3327         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3328         if (!rc)
3329                 rc = (rc2) ? rc2 : rc3;
3330         if (rc)
3331                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3332         qdio_free(CARD_DDEV(card));
3333         if (recover_flag == CARD_STATE_UP)
3334                 card->state = CARD_STATE_RECOVER;
3335         /* let user_space know that device is offline */
3336         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3337         mutex_unlock(&card->conf_mutex);
3338         mutex_unlock(&card->discipline_mutex);
3339         return 0;
3340 }
3341
3342 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3343 {
3344         return __qeth_l3_set_offline(cgdev, 0);
3345 }
3346
3347 static int qeth_l3_recover(void *ptr)
3348 {
3349         struct qeth_card *card;
3350         int rc = 0;
3351
3352         card = (struct qeth_card *) ptr;
3353         QETH_CARD_TEXT(card, 2, "recover1");
3354         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3355         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3356                 return 0;
3357         QETH_CARD_TEXT(card, 2, "recover2");
3358         dev_warn(&card->gdev->dev,
3359                 "A recovery process has been started for the device\n");
3360         qeth_set_recovery_task(card);
3361         __qeth_l3_set_offline(card->gdev, 1);
3362         rc = __qeth_l3_set_online(card->gdev, 1);
3363         if (!rc)
3364                 dev_info(&card->gdev->dev,
3365                         "Device successfully recovered!\n");
3366         else {
3367                 qeth_close_dev(card);
3368                 dev_warn(&card->gdev->dev, "The qeth device driver "
3369                                 "failed to recover an error on the device\n");
3370         }
3371         qeth_clear_recovery_task(card);
3372         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3373         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3374         return 0;
3375 }
3376
3377 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3378 {
3379         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3380         qeth_set_allowed_threads(card, 0, 1);
3381         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3382                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3383         qeth_qdio_clear_card(card, 0);
3384         qeth_clear_qdio_buffers(card);
3385         qdio_free(CARD_DDEV(card));
3386 }
3387
3388 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3389 {
3390         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3391
3392         if (card->dev)
3393                 netif_device_detach(card->dev);
3394         qeth_set_allowed_threads(card, 0, 1);
3395         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3396         if (gdev->state == CCWGROUP_OFFLINE)
3397                 return 0;
3398         if (card->state == CARD_STATE_UP) {
3399                 if (card->info.hwtrap)
3400                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3401                 __qeth_l3_set_offline(card->gdev, 1);
3402         } else
3403                 __qeth_l3_set_offline(card->gdev, 0);
3404         return 0;
3405 }
3406
3407 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3408 {
3409         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3410         int rc = 0;
3411
3412         if (gdev->state == CCWGROUP_OFFLINE)
3413                 goto out;
3414
3415         if (card->state == CARD_STATE_RECOVER) {
3416                 rc = __qeth_l3_set_online(card->gdev, 1);
3417                 if (rc) {
3418                         rtnl_lock();
3419                         dev_close(card->dev);
3420                         rtnl_unlock();
3421                 }
3422         } else
3423                 rc = __qeth_l3_set_online(card->gdev, 0);
3424 out:
3425         qeth_set_allowed_threads(card, 0xffffffff, 0);
3426         if (card->dev)
3427                 netif_device_attach(card->dev);
3428         if (rc)
3429                 dev_warn(&card->gdev->dev, "The qeth device driver "
3430                         "failed to recover an error on the device\n");
3431         return rc;
3432 }
3433
3434 /* Returns zero if the command is successfully "consumed" */
3435 static int qeth_l3_control_event(struct qeth_card *card,
3436                                         struct qeth_ipa_cmd *cmd)
3437 {
3438         return 1;
3439 }
3440
3441 struct qeth_discipline qeth_l3_discipline = {
3442         .start_poll = qeth_qdio_start_poll,
3443         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3444         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3445         .recover = qeth_l3_recover,
3446         .setup = qeth_l3_probe_device,
3447         .remove = qeth_l3_remove_device,
3448         .set_online = qeth_l3_set_online,
3449         .set_offline = qeth_l3_set_offline,
3450         .shutdown = qeth_l3_shutdown,
3451         .freeze = qeth_l3_pm_suspend,
3452         .thaw = qeth_l3_pm_resume,
3453         .restore = qeth_l3_pm_resume,
3454         .control_event_handler = qeth_l3_control_event,
3455 };
3456 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3457
3458 static int qeth_l3_ip_event(struct notifier_block *this,
3459                             unsigned long event, void *ptr)
3460 {
3461
3462         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3463         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3464         struct qeth_ipaddr *addr;
3465         struct qeth_card *card;
3466
3467         if (dev_net(dev) != &init_net)
3468                 return NOTIFY_DONE;
3469
3470         card = qeth_l3_get_card_from_dev(dev);
3471         if (!card)
3472                 return NOTIFY_DONE;
3473         QETH_CARD_TEXT(card, 3, "ipevent");
3474
3475         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3476         if (addr) {
3477                 addr->u.a4.addr = ifa->ifa_address;
3478                 addr->u.a4.mask = ifa->ifa_mask;
3479                 addr->type = QETH_IP_TYPE_NORMAL;
3480         } else
3481                 return NOTIFY_DONE;
3482
3483         switch (event) {
3484         case NETDEV_UP:
3485                 spin_lock_bh(&card->ip_lock);
3486                 qeth_l3_add_ip(card, addr);
3487                 spin_unlock_bh(&card->ip_lock);
3488                 break;
3489         case NETDEV_DOWN:
3490                 spin_lock_bh(&card->ip_lock);
3491                 qeth_l3_delete_ip(card, addr);
3492                 spin_unlock_bh(&card->ip_lock);
3493                 break;
3494         }
3495
3496         kfree(addr);
3497         return NOTIFY_DONE;
3498 }
3499
3500 static struct notifier_block qeth_l3_ip_notifier = {
3501         qeth_l3_ip_event,
3502         NULL,
3503 };
3504
3505 #ifdef CONFIG_QETH_IPV6
3506 /**
3507  * IPv6 event handler
3508  */
3509 static int qeth_l3_ip6_event(struct notifier_block *this,
3510                              unsigned long event, void *ptr)
3511 {
3512         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3513         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3514         struct qeth_ipaddr *addr;
3515         struct qeth_card *card;
3516
3517         card = qeth_l3_get_card_from_dev(dev);
3518         if (!card)
3519                 return NOTIFY_DONE;
3520         QETH_CARD_TEXT(card, 3, "ip6event");
3521         if (!qeth_is_supported(card, IPA_IPV6))
3522                 return NOTIFY_DONE;
3523
3524         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3525         if (addr) {
3526                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3527                 addr->u.a6.pfxlen = ifa->prefix_len;
3528                 addr->type = QETH_IP_TYPE_NORMAL;
3529         } else
3530                 return NOTIFY_DONE;
3531
3532         switch (event) {
3533         case NETDEV_UP:
3534                 spin_lock_bh(&card->ip_lock);
3535                 qeth_l3_add_ip(card, addr);
3536                 spin_unlock_bh(&card->ip_lock);
3537                 break;
3538         case NETDEV_DOWN:
3539                 spin_lock_bh(&card->ip_lock);
3540                 qeth_l3_delete_ip(card, addr);
3541                 spin_unlock_bh(&card->ip_lock);
3542                 break;
3543         }
3544
3545         kfree(addr);
3546         return NOTIFY_DONE;
3547 }
3548
3549 static struct notifier_block qeth_l3_ip6_notifier = {
3550         qeth_l3_ip6_event,
3551         NULL,
3552 };
3553 #endif
3554
3555 static int qeth_l3_register_notifiers(void)
3556 {
3557         int rc;
3558
3559         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3560         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3561         if (rc)
3562                 return rc;
3563 #ifdef CONFIG_QETH_IPV6
3564         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3565         if (rc) {
3566                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3567                 return rc;
3568         }
3569 #else
3570         pr_warn("There is no IPv6 support for the layer 3 discipline\n");
3571 #endif
3572         return 0;
3573 }
3574
3575 static void qeth_l3_unregister_notifiers(void)
3576 {
3577
3578         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3579         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3580 #ifdef CONFIG_QETH_IPV6
3581         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3582 #endif /* QETH_IPV6 */
3583 }
3584
3585 static int __init qeth_l3_init(void)
3586 {
3587         int rc = 0;
3588
3589         pr_info("register layer 3 discipline\n");
3590         rc = qeth_l3_register_notifiers();
3591         return rc;
3592 }
3593
3594 static void __exit qeth_l3_exit(void)
3595 {
3596         qeth_l3_unregister_notifiers();
3597         pr_info("unregister layer 3 discipline\n");
3598 }
3599
3600 module_init(qeth_l3_init);
3601 module_exit(qeth_l3_exit);
3602 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3603 MODULE_DESCRIPTION("qeth layer 3 discipline");
3604 MODULE_LICENSE("GPL");