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 struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
 158                                                    struct qeth_ipaddr *query)
 159 {
 160         u64 key = qeth_l3_ipaddr_hash(query);
 161         struct qeth_ipaddr *addr;
 162
 163         if (query->is_multicast) {
 164                 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
 165                         if (qeth_l3_addr_match_ip(addr, query))
 166                                 return addr;
 167         } else {
 168                 hash_for_each_possible(card->ip_htable,  addr, hnode, key)
 169                         if (qeth_l3_addr_match_ip(addr, query))
 170                                 return addr;
 171         }
 172         return NULL;
 173 }
 174
 175 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 176 {
 177         int i, j;
 178         u8 octet;
 179
 180         for (i = 0; i < len; ++i) {
 181                 octet = addr[i];
 182                 for (j = 7; j >= 0; --j) {
 183                         bits[i*8 + j] = octet & 1;
 184                         octet >>= 1;
 185                 }
 186         }
 187 }
 188
 189 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 190                                              struct qeth_ipaddr *addr)
 191 {
 192         struct qeth_ipato_entry *ipatoe;
 193         u8 addr_bits[128] = {0, };
 194         u8 ipatoe_bits[128] = {0, };
 195         int rc = 0;
 196
 197         if (!card->ipato.enabled)
 198                 return 0;
 199         if (addr->type != QETH_IP_TYPE_NORMAL)
 200                 return 0;
 201
 202         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 203                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 204         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 205                 if (addr->proto != ipatoe->proto)
 206                         continue;
 207                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 208                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 209                                           4 : 16);
 210                 if (addr->proto == QETH_PROT_IPV4)
 211                         rc = !memcmp(addr_bits, ipatoe_bits,
 212                                      min(32, ipatoe->mask_bits));
 213                 else
 214                         rc = !memcmp(addr_bits, ipatoe_bits,
 215                                      min(128, ipatoe->mask_bits));
 216                 if (rc)
 217                         break;
 218         }
 219         /* invert? */
 220         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 221                 rc = !rc;
 222         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 223                 rc = !rc;
 224
 225         return rc;
 226 }
 227
 228 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 229 {
 230         int rc = 0;
 231         struct qeth_ipaddr *addr;
 232
 233         QETH_CARD_TEXT(card, 4, "delip");
 234
 235         if (tmp_addr->proto == QETH_PROT_IPV4)
 236                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 237         else {
 238                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 239                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 240         }
 241
 242         addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
 243         if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
 244                 return -ENOENT;
 245
 246         addr->ref_counter--;
 247         if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
 248                 return rc;
 249         if (addr->in_progress)
 250                 return -EINPROGRESS;
 251
 252         if (qeth_card_hw_is_reachable(card))
 253                 rc = qeth_l3_deregister_addr_entry(card, addr);
 254
 255         hash_del(&addr->hnode);
 256         kfree(addr);
 257
 258         return rc;
 259 }
 260
 261 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 262 {
 263         int rc = 0;
 264         struct qeth_ipaddr *addr;
 265         char buf[40];
 266
 267         QETH_CARD_TEXT(card, 4, "addip");
 268
 269         if (tmp_addr->proto == QETH_PROT_IPV4)
 270                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 271         else {
 272                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 273                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 274         }
 275
 276         addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
 277         if (addr) {
 278                 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
 279                         return -EADDRINUSE;
 280                 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
 281                         addr->ref_counter++;
 282                         return 0;
 283                 }
 284                 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
 285                                          buf);
 286                 dev_warn(&card->gdev->dev,
 287                          "Registering IP address %s failed\n", buf);
 288                 return -EADDRINUSE;
 289         } else {
 290                 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
 291                 if (!addr)
 292                         return -ENOMEM;
 293
 294                 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
 295                 addr->ref_counter = 1;
 296
 297                 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 298                         QETH_CARD_TEXT(card, 2, "tkovaddr");
 299                         addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 300                 }
 301                 hash_add(card->ip_htable, &addr->hnode,
 302                                 qeth_l3_ipaddr_hash(addr));
 303
 304                 if (!qeth_card_hw_is_reachable(card)) {
 305                         addr->disp_flag = QETH_DISP_ADDR_ADD;
 306                         return 0;
 307                 }
 308
 309                 /* qeth_l3_register_addr_entry can go to sleep
 310                  * if we add a IPV4 addr. It is caused by the reason
 311                  * that SETIP ipa cmd starts ARP staff for IPV4 addr.
 312                  * Thus we should unlock spinlock, and make a protection
 313                  * using in_progress variable to indicate that there is
 314                  * an hardware operation with this IPV4 address
 315                  */
 316                 if (addr->proto == QETH_PROT_IPV4) {
 317                         addr->in_progress = 1;
 318                         spin_unlock_bh(&card->ip_lock);
 319                         rc = qeth_l3_register_addr_entry(card, addr);
 320                         spin_lock_bh(&card->ip_lock);
 321                         addr->in_progress = 0;
 322                 } else
 323                         rc = qeth_l3_register_addr_entry(card, addr);
 324
 325                 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
 326                                 (rc == IPA_RC_LAN_OFFLINE)) {
 327                         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 328                         if (addr->ref_counter < 1) {
 329                                 qeth_l3_deregister_addr_entry(card, addr);
 330                                 hash_del(&addr->hnode);
 331                                 kfree(addr);
 332                         }
 333                 } else {
 334                         hash_del(&addr->hnode);
 335                         kfree(addr);
 336                 }
 337         }
 338         return rc;
 339 }
 340
 341
 342 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 343                                 enum qeth_prot_versions prot)
 344 {
 345         struct qeth_ipaddr *addr;
 346
 347         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 348         if (!addr)
 349                 return NULL;
 350
 351         addr->type = QETH_IP_TYPE_NORMAL;
 352         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 353         addr->proto = prot;
 354
 355         return addr;
 356 }
 357
 358 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 359 {
 360         struct qeth_ipaddr *addr;
 361         struct hlist_node *tmp;
 362         int i;
 363
 364         QETH_CARD_TEXT(card, 4, "clearip");
 365
 366         spin_lock_bh(&card->ip_lock);
 367
 368         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 369                 if (!recover) {
 370                         hash_del(&addr->hnode);
 371                         kfree(addr);
 372                         continue;
 373                 }
 374                 addr->disp_flag = QETH_DISP_ADDR_ADD;
 375         }
 376
 377         spin_unlock_bh(&card->ip_lock);
 378
 379         spin_lock_bh(&card->mclock);
 380
 381         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
 382                 hash_del(&addr->hnode);
 383                 kfree(addr);
 384         }
 385
 386         spin_unlock_bh(&card->mclock);
 387
 388
 389 }
 390 static void qeth_l3_recover_ip(struct qeth_card *card)
 391 {
 392         struct qeth_ipaddr *addr;
 393         struct hlist_node *tmp;
 394         int i;
 395         int rc;
 396
 397         QETH_CARD_TEXT(card, 4, "recovrip");
 398
 399         spin_lock_bh(&card->ip_lock);
 400
 401         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 402                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
 403                         if (addr->proto == QETH_PROT_IPV4) {
 404                                 addr->in_progress = 1;
 405                                 spin_unlock_bh(&card->ip_lock);
 406                                 rc = qeth_l3_register_addr_entry(card, addr);
 407                                 spin_lock_bh(&card->ip_lock);
 408                                 addr->in_progress = 0;
 409                         } else
 410                                 rc = qeth_l3_register_addr_entry(card, addr);
 411
 412                         if (!rc) {
 413                                 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 414                                 if (addr->ref_counter < 1)
 415                                         qeth_l3_delete_ip(card, addr);
 416                         } else {
 417                                 hash_del(&addr->hnode);
 418                                 kfree(addr);
 419                         }
 420                 }
 421         }
 422
 423         spin_unlock_bh(&card->ip_lock);
 424
 425 }
 426
 427 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 428                         struct qeth_ipaddr *addr, int ipacmd)
 429 {
 430         int rc;
 431         struct qeth_cmd_buffer *iob;
 432         struct qeth_ipa_cmd *cmd;
 433
 434         QETH_CARD_TEXT(card, 4, "setdelmc");
 435
 436         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 437         if (!iob)
 438                 return -ENOMEM;
 439         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 440         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 441         if (addr->proto == QETH_PROT_IPV6)
 442                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 443                        sizeof(struct in6_addr));
 444         else
 445                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 446
 447         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 448
 449         return rc;
 450 }
 451
 452 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 453 {
 454         int i, j;
 455         for (i = 0; i < 16; i++) {
 456                 j = (len) - (i * 8);
 457                 if (j >= 8)
 458                         netmask[i] = 0xff;
 459                 else if (j > 0)
 460                         netmask[i] = (u8)(0xFF00 >> j);
 461                 else
 462                         netmask[i] = 0;
 463         }
 464 }
 465
 466 static int qeth_l3_send_setdelip(struct qeth_card *card,
 467                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 468 {
 469         int rc;
 470         struct qeth_cmd_buffer *iob;
 471         struct qeth_ipa_cmd *cmd;
 472         __u8 netmask[16];
 473
 474         QETH_CARD_TEXT(card, 4, "setdelip");
 475         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 476
 477         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 478         if (!iob)
 479                 return -ENOMEM;
 480         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 481         if (addr->proto == QETH_PROT_IPV6) {
 482                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 483                        sizeof(struct in6_addr));
 484                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 485                 memcpy(cmd->data.setdelip6.mask, netmask,
 486                        sizeof(struct in6_addr));
 487                 cmd->data.setdelip6.flags = flags;
 488         } else {
 489                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 490                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 491                 cmd->data.setdelip4.flags = flags;
 492         }
 493
 494         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 495
 496         return rc;
 497 }
 498
 499 static int qeth_l3_send_setrouting(struct qeth_card *card,
 500         enum qeth_routing_types type, enum qeth_prot_versions prot)
 501 {
 502         int rc;
 503         struct qeth_ipa_cmd *cmd;
 504         struct qeth_cmd_buffer *iob;
 505
 506         QETH_CARD_TEXT(card, 4, "setroutg");
 507         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 508         if (!iob)
 509                 return -ENOMEM;
 510         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 511         cmd->data.setrtg.type = (type);
 512         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 513
 514         return rc;
 515 }
 516
 517 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 518                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 519 {
 520         if (card->info.type == QETH_CARD_TYPE_IQD) {
 521                 switch (*type) {
 522                 case NO_ROUTER:
 523                 case PRIMARY_CONNECTOR:
 524                 case SECONDARY_CONNECTOR:
 525                 case MULTICAST_ROUTER:
 526                         return 0;
 527                 default:
 528                         goto out_inval;
 529                 }
 530         } else {
 531                 switch (*type) {
 532                 case NO_ROUTER:
 533                 case PRIMARY_ROUTER:
 534                 case SECONDARY_ROUTER:
 535                         return 0;
 536                 case MULTICAST_ROUTER:
 537                         if (qeth_is_ipafunc_supported(card, prot,
 538                                                       IPA_OSA_MC_ROUTER))
 539                                 return 0;
 540                 default:
 541                         goto out_inval;
 542                 }
 543         }
 544 out_inval:
 545         *type = NO_ROUTER;
 546         return -EINVAL;
 547 }
 548
 549 int qeth_l3_setrouting_v4(struct qeth_card *card)
 550 {
 551         int rc;
 552
 553         QETH_CARD_TEXT(card, 3, "setrtg4");
 554
 555         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 556                                   QETH_PROT_IPV4);
 557         if (rc)
 558                 return rc;
 559
 560         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 561                                   QETH_PROT_IPV4);
 562         if (rc) {
 563                 card->options.route4.type = NO_ROUTER;
 564                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 565                         " on %s. Type set to 'no router'.\n", rc,
 566                         QETH_CARD_IFNAME(card));
 567         }
 568         return rc;
 569 }
 570
 571 int qeth_l3_setrouting_v6(struct qeth_card *card)
 572 {
 573         int rc = 0;
 574
 575         QETH_CARD_TEXT(card, 3, "setrtg6");
 576 #ifdef CONFIG_QETH_IPV6
 577
 578         if (!qeth_is_supported(card, IPA_IPV6))
 579                 return 0;
 580         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 581                                   QETH_PROT_IPV6);
 582         if (rc)
 583                 return rc;
 584
 585         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 586                                   QETH_PROT_IPV6);
 587         if (rc) {
 588                 card->options.route6.type = NO_ROUTER;
 589                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 590                         " on %s. Type set to 'no router'.\n", rc,
 591                         QETH_CARD_IFNAME(card));
 592         }
 593 #endif
 594         return rc;
 595 }
 596
 597 /*
 598  * IP address takeover related functions
 599  */
 600
 601 /**
 602  * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
 603  *
 604  * Caller must hold ip_lock.
 605  */
 606 void qeth_l3_update_ipato(struct qeth_card *card)
 607 {
 608         struct qeth_ipaddr *addr;
 609         unsigned int i;
 610
 611         hash_for_each(card->ip_htable, i, addr, hnode) {
 612                 if (addr->type != QETH_IP_TYPE_NORMAL)
 613                         continue;
 614                 if (qeth_l3_is_addr_covered_by_ipato(card, addr))
 615                         addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 616                 else
 617                         addr->set_flags &= ~QETH_IPA_SETIP_TAKEOVER_FLAG;
 618         }
 619 }
 620
 621 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 622 {
 623         struct qeth_ipato_entry *ipatoe, *tmp;
 624
 625         spin_lock_bh(&card->ip_lock);
 626
 627         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 628                 list_del(&ipatoe->entry);
 629                 kfree(ipatoe);
 630         }
 631
 632         qeth_l3_update_ipato(card);
 633         spin_unlock_bh(&card->ip_lock);
 634 }
 635
 636 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 637                                 struct qeth_ipato_entry *new)
 638 {
 639         struct qeth_ipato_entry *ipatoe;
 640         int rc = 0;
 641
 642         QETH_CARD_TEXT(card, 2, "addipato");
 643
 644         spin_lock_bh(&card->ip_lock);
 645
 646         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 647                 if (ipatoe->proto != new->proto)
 648                         continue;
 649                 if (!memcmp(ipatoe->addr, new->addr,
 650                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 651                     (ipatoe->mask_bits == new->mask_bits)) {
 652                         rc = -EEXIST;
 653                         break;
 654                 }
 655         }
 656
 657         if (!rc) {
 658                 list_add_tail(&new->entry, &card->ipato.entries);
 659                 qeth_l3_update_ipato(card);
 660         }
 661
 662         spin_unlock_bh(&card->ip_lock);
 663
 664         return rc;
 665 }
 666
 667 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 668                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 669 {
 670         struct qeth_ipato_entry *ipatoe, *tmp;
 671
 672         QETH_CARD_TEXT(card, 2, "delipato");
 673
 674         spin_lock_bh(&card->ip_lock);
 675
 676         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 677                 if (ipatoe->proto != proto)
 678                         continue;
 679                 if (!memcmp(ipatoe->addr, addr,
 680                             (proto == QETH_PROT_IPV4)? 4:16) &&
 681                     (ipatoe->mask_bits == mask_bits)) {
 682                         list_del(&ipatoe->entry);
 683                         qeth_l3_update_ipato(card);
 684                         kfree(ipatoe);
 685                 }
 686         }
 687
 688         spin_unlock_bh(&card->ip_lock);
 689 }
 690
 691 /*
 692  * VIPA related functions
 693  */
 694 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 695               const u8 *addr)
 696 {
 697         struct qeth_ipaddr *ipaddr;
 698         int rc = 0;
 699
 700         ipaddr = qeth_l3_get_addr_buffer(proto);
 701         if (ipaddr) {
 702                 if (proto == QETH_PROT_IPV4) {
 703                         QETH_CARD_TEXT(card, 2, "addvipa4");
 704                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 705                         ipaddr->u.a4.mask = 0;
 706                 } else if (proto == QETH_PROT_IPV6) {
 707                         QETH_CARD_TEXT(card, 2, "addvipa6");
 708                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 709                         ipaddr->u.a6.pfxlen = 0;
 710                 }
 711                 ipaddr->type = QETH_IP_TYPE_VIPA;
 712                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 713                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 714         } else
 715                 return -ENOMEM;
 716
 717         spin_lock_bh(&card->ip_lock);
 718         rc = qeth_l3_add_ip(card, ipaddr);
 719         spin_unlock_bh(&card->ip_lock);
 720
 721         kfree(ipaddr);
 722
 723         return rc;
 724 }
 725
 726 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 727               const u8 *addr)
 728 {
 729         struct qeth_ipaddr *ipaddr;
 730
 731         ipaddr = qeth_l3_get_addr_buffer(proto);
 732         if (ipaddr) {
 733                 if (proto == QETH_PROT_IPV4) {
 734                         QETH_CARD_TEXT(card, 2, "delvipa4");
 735                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 736                         ipaddr->u.a4.mask = 0;
 737                 } else if (proto == QETH_PROT_IPV6) {
 738                         QETH_CARD_TEXT(card, 2, "delvipa6");
 739                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 740                         ipaddr->u.a6.pfxlen = 0;
 741                 }
 742                 ipaddr->type = QETH_IP_TYPE_VIPA;
 743         } else
 744                 return;
 745
 746         spin_lock_bh(&card->ip_lock);
 747         qeth_l3_delete_ip(card, ipaddr);
 748         spin_unlock_bh(&card->ip_lock);
 749
 750         kfree(ipaddr);
 751 }
 752
 753 /*
 754  * proxy ARP related functions
 755  */
 756 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 757               const u8 *addr)
 758 {
 759         struct qeth_ipaddr *ipaddr;
 760         int rc = 0;
 761
 762         ipaddr = qeth_l3_get_addr_buffer(proto);
 763         if (ipaddr) {
 764                 if (proto == QETH_PROT_IPV4) {
 765                         QETH_CARD_TEXT(card, 2, "addrxip4");
 766                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 767                         ipaddr->u.a4.mask = 0;
 768                 } else if (proto == QETH_PROT_IPV6) {
 769                         QETH_CARD_TEXT(card, 2, "addrxip6");
 770                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 771                         ipaddr->u.a6.pfxlen = 0;
 772                 }
 773
 774                 ipaddr->type = QETH_IP_TYPE_RXIP;
 775                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 776                 ipaddr->del_flags = 0;
 777         } else
 778                 return -ENOMEM;
 779
 780         spin_lock_bh(&card->ip_lock);
 781         rc = qeth_l3_add_ip(card, ipaddr);
 782         spin_unlock_bh(&card->ip_lock);
 783
 784         kfree(ipaddr);
 785
 786         return rc;
 787 }
 788
 789 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 790                         const u8 *addr)
 791 {
 792         struct qeth_ipaddr *ipaddr;
 793
 794         ipaddr = qeth_l3_get_addr_buffer(proto);
 795         if (ipaddr) {
 796                 if (proto == QETH_PROT_IPV4) {
 797                         QETH_CARD_TEXT(card, 2, "addrxip4");
 798                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 799                         ipaddr->u.a4.mask = 0;
 800                 } else if (proto == QETH_PROT_IPV6) {
 801                         QETH_CARD_TEXT(card, 2, "addrxip6");
 802                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 803                         ipaddr->u.a6.pfxlen = 0;
 804                 }
 805                 ipaddr->type = QETH_IP_TYPE_RXIP;
 806         } else
 807                 return;
 808
 809         spin_lock_bh(&card->ip_lock);
 810         qeth_l3_delete_ip(card, ipaddr);
 811         spin_unlock_bh(&card->ip_lock);
 812
 813         kfree(ipaddr);
 814 }
 815
 816 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 817                                 struct qeth_ipaddr *addr)
 818 {
 819         char buf[50];
 820         int rc = 0;
 821         int cnt = 3;
 822
 823         if (card->options.sniffer)
 824                 return 0;
 825
 826         if (addr->proto == QETH_PROT_IPV4) {
 827                 QETH_CARD_TEXT(card, 2, "setaddr4");
 828                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 829         } else if (addr->proto == QETH_PROT_IPV6) {
 830                 QETH_CARD_TEXT(card, 2, "setaddr6");
 831                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 832                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 833         } else {
 834                 QETH_CARD_TEXT(card, 2, "setaddr?");
 835                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 836         }
 837         do {
 838                 if (addr->is_multicast)
 839                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 840                 else
 841                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 842                                         addr->set_flags);
 843                 if (rc)
 844                         QETH_CARD_TEXT(card, 2, "failed");
 845         } while ((--cnt > 0) && rc);
 846         if (rc) {
 847                 QETH_CARD_TEXT(card, 2, "FAILED");
 848                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 849                 dev_warn(&card->gdev->dev,
 850                         "Registering IP address %s failed\n", buf);
 851         }
 852         return rc;
 853 }
 854
 855 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 856                                                 struct qeth_ipaddr *addr)
 857 {
 858         int rc = 0;
 859
 860         if (card->options.sniffer)
 861                 return 0;
 862
 863         if (addr->proto == QETH_PROT_IPV4) {
 864                 QETH_CARD_TEXT(card, 2, "deladdr4");
 865                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 866         } else if (addr->proto == QETH_PROT_IPV6) {
 867                 QETH_CARD_TEXT(card, 2, "deladdr6");
 868                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 869                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 870         } else {
 871                 QETH_CARD_TEXT(card, 2, "deladdr?");
 872                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 873         }
 874         if (addr->is_multicast)
 875                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 876         else
 877                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 878                                         addr->del_flags);
 879         if (rc)
 880                 QETH_CARD_TEXT(card, 2, "failed");
 881
 882         return rc;
 883 }
 884
 885 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 886 {
 887         if (cast_type == RTN_MULTICAST)
 888                 return QETH_CAST_MULTICAST;
 889         if (cast_type == RTN_BROADCAST)
 890                 return QETH_CAST_BROADCAST;
 891         return QETH_CAST_UNICAST;
 892 }
 893
 894 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 895 {
 896         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 897         if (cast_type == RTN_MULTICAST)
 898                 return ct | QETH_CAST_MULTICAST;
 899         if (cast_type == RTN_ANYCAST)
 900                 return ct | QETH_CAST_ANYCAST;
 901         if (cast_type == RTN_BROADCAST)
 902                 return ct | QETH_CAST_BROADCAST;
 903         return ct | QETH_CAST_UNICAST;
 904 }
 905
 906 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 907 {
 908         int rc;
 909
 910         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 911
 912         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 913                 dev_info(&card->gdev->dev,
 914                         "set adapter parameters not supported.\n");
 915                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 916                 return 0;
 917         }
 918         rc = qeth_query_setadapterparms(card);
 919         if (rc) {
 920                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
 921                         "0x%x\n", dev_name(&card->gdev->dev), rc);
 922                 return rc;
 923         }
 924         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 925                 rc = qeth_setadpparms_change_macaddr(card);
 926                 if (rc)
 927                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
 928                                 " address failed\n");
 929         }
 930
 931         return rc;
 932 }
 933
 934 #ifdef CONFIG_QETH_IPV6
 935 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
 936                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
 937 {
 938         int rc;
 939         struct qeth_cmd_buffer *iob;
 940
 941         QETH_CARD_TEXT(card, 4, "simassp6");
 942         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
 943                                        0, QETH_PROT_IPV6);
 944         if (!iob)
 945                 return -ENOMEM;
 946         rc = qeth_send_setassparms(card, iob, 0, 0,
 947                                    qeth_setassparms_cb, NULL);
 948         return rc;
 949 }
 950 #endif
 951
 952 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
 953 {
 954         int rc;
 955
 956         QETH_CARD_TEXT(card, 3, "ipaarp");
 957
 958         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 959                 dev_info(&card->gdev->dev,
 960                         "ARP processing not supported on %s!\n",
 961                         QETH_CARD_IFNAME(card));
 962                 return 0;
 963         }
 964         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
 965                                           IPA_CMD_ASS_START, 0);
 966         if (rc) {
 967                 dev_warn(&card->gdev->dev,
 968                         "Starting ARP processing support for %s failed\n",
 969                         QETH_CARD_IFNAME(card));
 970         }
 971         return rc;
 972 }
 973
 974 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
 975 {
 976         int rc;
 977
 978         QETH_CARD_TEXT(card, 3, "ipaipfrg");
 979
 980         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
 981                 dev_info(&card->gdev->dev,
 982                         "Hardware IP fragmentation not supported on %s\n",
 983                         QETH_CARD_IFNAME(card));
 984                 return  -EOPNOTSUPP;
 985         }
 986
 987         rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
 988                                           IPA_CMD_ASS_START, 0);
 989         if (rc) {
 990                 dev_warn(&card->gdev->dev,
 991                         "Starting IP fragmentation support for %s failed\n",
 992                         QETH_CARD_IFNAME(card));
 993         } else
 994                 dev_info(&card->gdev->dev,
 995                         "Hardware IP fragmentation enabled \n");
 996         return rc;
 997 }
 998
 999 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1000 {
1001         int rc;
1002
1003         QETH_CARD_TEXT(card, 3, "stsrcmac");
1004
1005         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1006                 dev_info(&card->gdev->dev,
1007                         "Inbound source MAC-address not supported on %s\n",
1008                         QETH_CARD_IFNAME(card));
1009                 return -EOPNOTSUPP;
1010         }
1011
1012         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
1013                                           IPA_CMD_ASS_START, 0);
1014         if (rc)
1015                 dev_warn(&card->gdev->dev,
1016                         "Starting source MAC-address support for %s failed\n",
1017                         QETH_CARD_IFNAME(card));
1018         return rc;
1019 }
1020
1021 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1022 {
1023         int rc = 0;
1024
1025         QETH_CARD_TEXT(card, 3, "strtvlan");
1026
1027         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1028                 dev_info(&card->gdev->dev,
1029                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1030                 return -EOPNOTSUPP;
1031         }
1032
1033         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
1034                                           IPA_CMD_ASS_START, 0);
1035         if (rc) {
1036                 dev_warn(&card->gdev->dev,
1037                         "Starting VLAN support for %s failed\n",
1038                         QETH_CARD_IFNAME(card));
1039         } else {
1040                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1041         }
1042         return rc;
1043 }
1044
1045 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1046 {
1047         int rc;
1048
1049         QETH_CARD_TEXT(card, 3, "stmcast");
1050
1051         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1052                 dev_info(&card->gdev->dev,
1053                         "Multicast not supported on %s\n",
1054                         QETH_CARD_IFNAME(card));
1055                 return -EOPNOTSUPP;
1056         }
1057
1058         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1059                                           IPA_CMD_ASS_START, 0);
1060         if (rc) {
1061                 dev_warn(&card->gdev->dev,
1062                         "Starting multicast support for %s failed\n",
1063                         QETH_CARD_IFNAME(card));
1064         } else {
1065                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1066                 card->dev->flags |= IFF_MULTICAST;
1067         }
1068         return rc;
1069 }
1070
1071 #ifdef CONFIG_QETH_IPV6
1072 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1073 {
1074         int rc;
1075
1076         QETH_CARD_TEXT(card, 3, "softipv6");
1077
1078         if (card->info.type == QETH_CARD_TYPE_IQD)
1079                 goto out;
1080
1081         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1082         if (rc) {
1083                 dev_err(&card->gdev->dev,
1084                         "Activating IPv6 support for %s failed\n",
1085                         QETH_CARD_IFNAME(card));
1086                 return rc;
1087         }
1088         rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1089                                           IPA_CMD_ASS_START, 3);
1090         if (rc) {
1091                 dev_err(&card->gdev->dev,
1092                         "Activating IPv6 support for %s failed\n",
1093                         QETH_CARD_IFNAME(card));
1094                 return rc;
1095         }
1096         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1097                                                IPA_CMD_ASS_START);
1098         if (rc) {
1099                 dev_err(&card->gdev->dev,
1100                         "Activating IPv6 support for %s failed\n",
1101                          QETH_CARD_IFNAME(card));
1102                 return rc;
1103         }
1104         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1105                                                IPA_CMD_ASS_START);
1106         if (rc) {
1107                 dev_warn(&card->gdev->dev,
1108                         "Enabling the passthrough mode for %s failed\n",
1109                         QETH_CARD_IFNAME(card));
1110                 return rc;
1111         }
1112 out:
1113         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1114         return 0;
1115 }
1116 #endif
1117
1118 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1119 {
1120         int rc = 0;
1121
1122         QETH_CARD_TEXT(card, 3, "strtipv6");
1123
1124         if (!qeth_is_supported(card, IPA_IPV6)) {
1125                 dev_info(&card->gdev->dev,
1126                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1127                 return 0;
1128         }
1129 #ifdef CONFIG_QETH_IPV6
1130         rc = qeth_l3_softsetup_ipv6(card);
1131 #endif
1132         return rc ;
1133 }
1134
1135 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1136 {
1137         int rc;
1138
1139         QETH_CARD_TEXT(card, 3, "stbrdcst");
1140         card->info.broadcast_capable = 0;
1141         if (!qeth_is_supported(card, IPA_FILTERING)) {
1142                 dev_info(&card->gdev->dev,
1143                         "Broadcast not supported on %s\n",
1144                         QETH_CARD_IFNAME(card));
1145                 rc = -EOPNOTSUPP;
1146                 goto out;
1147         }
1148         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1149                                           IPA_CMD_ASS_START, 0);
1150         if (rc) {
1151                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1152                         "%s failed\n", QETH_CARD_IFNAME(card));
1153                 goto out;
1154         }
1155
1156         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1157                                           IPA_CMD_ASS_CONFIGURE, 1);
1158         if (rc) {
1159                 dev_warn(&card->gdev->dev,
1160                         "Setting up broadcast filtering for %s failed\n",
1161                         QETH_CARD_IFNAME(card));
1162                 goto out;
1163         }
1164         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1165         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1166         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1167                                           IPA_CMD_ASS_ENABLE, 1);
1168         if (rc) {
1169                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1170                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1171                 goto out;
1172         }
1173         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1174 out:
1175         if (card->info.broadcast_capable)
1176                 card->dev->flags |= IFF_BROADCAST;
1177         else
1178                 card->dev->flags &= ~IFF_BROADCAST;
1179         return rc;
1180 }
1181
1182 static int qeth_l3_start_ipassists(struct qeth_card *card)
1183 {
1184         QETH_CARD_TEXT(card, 3, "strtipas");
1185
1186         if (qeth_set_access_ctrl_online(card, 0))
1187                 return -EIO;
1188         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1189         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1190         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1191         qeth_l3_start_ipa_vlan(card);           /* go on*/
1192         qeth_l3_start_ipa_multicast(card);              /* go on*/
1193         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1194         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1195         return 0;
1196 }
1197
1198 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1199                 struct qeth_reply *reply, unsigned long data)
1200 {
1201         struct qeth_ipa_cmd *cmd;
1202
1203         cmd = (struct qeth_ipa_cmd *) data;
1204         if (cmd->hdr.return_code == 0)
1205                 memcpy(card->dev->dev_addr,
1206                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1207         else
1208                 eth_random_addr(card->dev->dev_addr);
1209
1210         return 0;
1211 }
1212
1213 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1214 {
1215         int rc = 0;
1216         struct qeth_cmd_buffer *iob;
1217         struct qeth_ipa_cmd *cmd;
1218
1219         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1220
1221         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1222                                      QETH_PROT_IPV6);
1223         if (!iob)
1224                 return -ENOMEM;
1225         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1226         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1227                         card->info.unique_id;
1228
1229         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1230                                 NULL);
1231         return rc;
1232 }
1233
1234 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1235                 struct qeth_reply *reply, unsigned long data)
1236 {
1237         struct qeth_ipa_cmd *cmd;
1238
1239         cmd = (struct qeth_ipa_cmd *) data;
1240         if (cmd->hdr.return_code == 0)
1241                 card->info.unique_id = *((__u16 *)
1242                                 &cmd->data.create_destroy_addr.unique_id[6]);
1243         else {
1244                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1245                                         UNIQUE_ID_NOT_BY_CARD;
1246                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1247                         "generate a unique ID\n");
1248         }
1249         return 0;
1250 }
1251
1252 static int qeth_l3_get_unique_id(struct qeth_card *card)
1253 {
1254         int rc = 0;
1255         struct qeth_cmd_buffer *iob;
1256         struct qeth_ipa_cmd *cmd;
1257
1258         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1259
1260         if (!qeth_is_supported(card, IPA_IPV6)) {
1261                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1262                                         UNIQUE_ID_NOT_BY_CARD;
1263                 return 0;
1264         }
1265
1266         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1267                                      QETH_PROT_IPV6);
1268         if (!iob)
1269                 return -ENOMEM;
1270         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1271         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1272                         card->info.unique_id;
1273
1274         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1275         return rc;
1276 }
1277
1278 static int
1279 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1280                             unsigned long data)
1281 {
1282         struct qeth_ipa_cmd        *cmd;
1283         __u16 rc;
1284
1285         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1286
1287         cmd = (struct qeth_ipa_cmd *)data;
1288         rc = cmd->hdr.return_code;
1289         if (rc)
1290                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1291         switch (cmd->data.diagass.action) {
1292         case QETH_DIAGS_CMD_TRACE_QUERY:
1293                 break;
1294         case QETH_DIAGS_CMD_TRACE_DISABLE:
1295                 switch (rc) {
1296                 case 0:
1297                 case IPA_RC_INVALID_SUBCMD:
1298                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1299                         dev_info(&card->gdev->dev, "The HiperSockets network "
1300                                 "traffic analyzer is deactivated\n");
1301                         break;
1302                 default:
1303                         break;
1304                 }
1305                 break;
1306         case QETH_DIAGS_CMD_TRACE_ENABLE:
1307                 switch (rc) {
1308                 case 0:
1309                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1310                         dev_info(&card->gdev->dev, "The HiperSockets network "
1311                                 "traffic analyzer is activated\n");
1312                         break;
1313                 case IPA_RC_HARDWARE_AUTH_ERROR:
1314                         dev_warn(&card->gdev->dev, "The device is not "
1315                                 "authorized to run as a HiperSockets network "
1316                                 "traffic analyzer\n");
1317                         break;
1318                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1319                         dev_warn(&card->gdev->dev, "A HiperSockets "
1320                                 "network traffic analyzer is already "
1321                                 "active in the HiperSockets LAN\n");
1322                         break;
1323                 default:
1324                         break;
1325                 }
1326                 break;
1327         default:
1328                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1329                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1330         }
1331
1332         return 0;
1333 }
1334
1335 static int
1336 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1337 {
1338         struct qeth_cmd_buffer *iob;
1339         struct qeth_ipa_cmd    *cmd;
1340
1341         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1342
1343         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1344         if (!iob)
1345                 return -ENOMEM;
1346         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1347         cmd->data.diagass.subcmd_len = 16;
1348         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1349         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1350         cmd->data.diagass.action = diags_cmd;
1351         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1352 }
1353
1354 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac)
1355 {
1356         ip_eth_mc_map(ipm, mac);
1357 }
1358
1359 static void qeth_l3_mark_all_mc_to_be_deleted(struct qeth_card *card)
1360 {
1361         struct qeth_ipaddr *addr;
1362         int i;
1363
1364         hash_for_each(card->ip_mc_htable, i, addr, hnode)
1365                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1366
1367 }
1368
1369 static void qeth_l3_add_all_new_mc(struct qeth_card *card)
1370 {
1371         struct qeth_ipaddr *addr;
1372         struct hlist_node *tmp;
1373         int i;
1374         int rc;
1375
1376         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1377                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
1378                         rc = qeth_l3_register_addr_entry(card, addr);
1379                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
1380                                 addr->ref_counter = 1;
1381                         else {
1382                                 hash_del(&addr->hnode);
1383                                 kfree(addr);
1384                         }
1385                 }
1386         }
1387
1388 }
1389
1390 static void qeth_l3_delete_nonused_mc(struct qeth_card *card)
1391 {
1392         struct qeth_ipaddr *addr;
1393         struct hlist_node *tmp;
1394         int i;
1395         int rc;
1396
1397         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1398                 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
1399                         rc = qeth_l3_deregister_addr_entry(card, addr);
1400                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) {
1401                                 hash_del(&addr->hnode);
1402                                 kfree(addr);
1403                         }
1404                 }
1405         }
1406
1407 }
1408
1409
1410 static void
1411 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1412 {
1413         struct ip_mc_list *im4;
1414         struct qeth_ipaddr *tmp, *ipm;
1415         char buf[MAX_ADDR_LEN];
1416
1417         QETH_CARD_TEXT(card, 4, "addmc");
1418
1419         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1420                 if (!tmp)
1421                         return;
1422
1423         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1424              im4 = rcu_dereference(im4->next_rcu)) {
1425                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf);
1426
1427                 tmp->u.a4.addr = im4->multiaddr;
1428                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1429                 tmp->is_multicast = 1;
1430
1431                 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1432                 if (ipm) {
1433                         /* for mcast, by-IP match means full match */
1434                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1435                 } else {
1436                         ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1437                         if (!ipm)
1438                                 continue;
1439                         memcpy(ipm->mac, buf, sizeof(tmp->mac));
1440                         ipm->u.a4.addr = im4->multiaddr;
1441                         ipm->is_multicast = 1;
1442                         ipm->disp_flag = QETH_DISP_ADDR_ADD;
1443                         hash_add(card->ip_mc_htable,
1444                                         &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1445                 }
1446         }
1447
1448         kfree(tmp);
1449 }
1450
1451 /* called with rcu_read_lock */
1452 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1453 {
1454         struct in_device *in_dev;
1455         u16 vid;
1456
1457         QETH_CARD_TEXT(card, 4, "addmcvl");
1458
1459         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1460                 return;
1461
1462         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1463                 struct net_device *netdev;
1464
1465                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1466                                               vid);
1467                 if (netdev == NULL ||
1468                     !(netdev->flags & IFF_UP))
1469                         continue;
1470                 in_dev = __in_dev_get_rcu(netdev);
1471                 if (!in_dev)
1472                         continue;
1473                 qeth_l3_add_mc_to_hash(card, in_dev);
1474         }
1475 }
1476
1477 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1478 {
1479         struct in_device *in4_dev;
1480
1481         QETH_CARD_TEXT(card, 4, "chkmcv4");
1482
1483         rcu_read_lock();
1484         in4_dev = __in_dev_get_rcu(card->dev);
1485         if (in4_dev == NULL)
1486                 goto unlock;
1487         qeth_l3_add_mc_to_hash(card, in4_dev);
1488         qeth_l3_add_vlan_mc(card);
1489 unlock:
1490         rcu_read_unlock();
1491 }
1492
1493 #ifdef CONFIG_QETH_IPV6
1494 static void
1495 qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev)
1496 {
1497         struct qeth_ipaddr *ipm;
1498         struct ifmcaddr6 *im6;
1499         struct qeth_ipaddr *tmp;
1500         char buf[MAX_ADDR_LEN];
1501
1502         QETH_CARD_TEXT(card, 4, "addmc6");
1503
1504         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1505                 if (!tmp)
1506                         return;
1507
1508         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1509                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1510
1511                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1512                 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1513                        sizeof(struct in6_addr));
1514                 tmp->is_multicast = 1;
1515
1516                 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1517                 if (ipm) {
1518                         /* for mcast, by-IP match means full match */
1519                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1520                         continue;
1521                 }
1522
1523                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1524                 if (!ipm)
1525                         continue;
1526
1527                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1528                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1529                        sizeof(struct in6_addr));
1530                 ipm->is_multicast = 1;
1531                 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1532                 hash_add(card->ip_mc_htable,
1533                                 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1534
1535         }
1536         kfree(tmp);
1537 }
1538
1539 /* called with rcu_read_lock */
1540 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1541 {
1542         struct inet6_dev *in_dev;
1543         u16 vid;
1544
1545         QETH_CARD_TEXT(card, 4, "admc6vl");
1546
1547         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1548                 return;
1549
1550         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1551                 struct net_device *netdev;
1552
1553                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1554                                               vid);
1555                 if (netdev == NULL ||
1556                     !(netdev->flags & IFF_UP))
1557                         continue;
1558                 in_dev = in6_dev_get(netdev);
1559                 if (!in_dev)
1560                         continue;
1561                 read_lock_bh(&in_dev->lock);
1562                 qeth_l3_add_mc6_to_hash(card, in_dev);
1563                 read_unlock_bh(&in_dev->lock);
1564                 in6_dev_put(in_dev);
1565         }
1566 }
1567
1568 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1569 {
1570         struct inet6_dev *in6_dev;
1571
1572         QETH_CARD_TEXT(card, 4, "chkmcv6");
1573
1574         if (!qeth_is_supported(card, IPA_IPV6))
1575                 return ;
1576         in6_dev = in6_dev_get(card->dev);
1577         if (!in6_dev)
1578                 return;
1579
1580         rcu_read_lock();
1581         read_lock_bh(&in6_dev->lock);
1582         qeth_l3_add_mc6_to_hash(card, in6_dev);
1583         qeth_l3_add_vlan_mc6(card);
1584         read_unlock_bh(&in6_dev->lock);
1585         rcu_read_unlock();
1586         in6_dev_put(in6_dev);
1587 }
1588 #endif /* CONFIG_QETH_IPV6 */
1589
1590 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1591                         unsigned short vid)
1592 {
1593         struct in_device *in_dev;
1594         struct in_ifaddr *ifa;
1595         struct qeth_ipaddr *addr;
1596         struct net_device *netdev;
1597
1598         QETH_CARD_TEXT(card, 4, "frvaddr4");
1599
1600         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1601         if (!netdev)
1602                 return;
1603         in_dev = in_dev_get(netdev);
1604         if (!in_dev)
1605                 return;
1606
1607         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1608         if (!addr)
1609                 goto out;
1610
1611         spin_lock_bh(&card->ip_lock);
1612
1613         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1614                 addr->u.a4.addr = ifa->ifa_address;
1615                 addr->u.a4.mask = ifa->ifa_mask;
1616                 addr->type = QETH_IP_TYPE_NORMAL;
1617                 qeth_l3_delete_ip(card, addr);
1618         }
1619
1620         spin_unlock_bh(&card->ip_lock);
1621
1622         kfree(addr);
1623 out:
1624         in_dev_put(in_dev);
1625 }
1626
1627 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1628                         unsigned short vid)
1629 {
1630 #ifdef CONFIG_QETH_IPV6
1631         struct inet6_dev *in6_dev;
1632         struct inet6_ifaddr *ifa;
1633         struct qeth_ipaddr *addr;
1634         struct net_device *netdev;
1635
1636         QETH_CARD_TEXT(card, 4, "frvaddr6");
1637
1638         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1639         if (!netdev)
1640                 return;
1641
1642         in6_dev = in6_dev_get(netdev);
1643         if (!in6_dev)
1644                 return;
1645
1646         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1647         if (!addr)
1648                 goto out;
1649
1650         spin_lock_bh(&card->ip_lock);
1651
1652         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1653                 memcpy(&addr->u.a6.addr, &ifa->addr,
1654                        sizeof(struct in6_addr));
1655                 addr->u.a6.pfxlen = ifa->prefix_len;
1656                 addr->type = QETH_IP_TYPE_NORMAL;
1657                 qeth_l3_delete_ip(card, addr);
1658         }
1659
1660         spin_unlock_bh(&card->ip_lock);
1661
1662         kfree(addr);
1663 out:
1664         in6_dev_put(in6_dev);
1665 #endif /* CONFIG_QETH_IPV6 */
1666 }
1667
1668 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1669                         unsigned short vid)
1670 {
1671         rcu_read_lock();
1672         qeth_l3_free_vlan_addresses4(card, vid);
1673         qeth_l3_free_vlan_addresses6(card, vid);
1674         rcu_read_unlock();
1675 }
1676
1677 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1678                                    __be16 proto, u16 vid)
1679 {
1680         struct qeth_card *card = dev->ml_priv;
1681
1682         set_bit(vid, card->active_vlans);
1683         return 0;
1684 }
1685
1686 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1687                                     __be16 proto, u16 vid)
1688 {
1689         struct qeth_card *card = dev->ml_priv;
1690
1691         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1692
1693         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1694                 QETH_CARD_TEXT(card, 3, "kidREC");
1695                 return 0;
1696         }
1697         /* unregister IP addresses of vlan device */
1698         qeth_l3_free_vlan_addresses(card, vid);
1699         clear_bit(vid, card->active_vlans);
1700         qeth_l3_set_multicast_list(card->dev);
1701         return 0;
1702 }
1703
1704 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1705                         struct sk_buff *skb, struct qeth_hdr *hdr,
1706                         unsigned short *vlan_id)
1707 {
1708         __be16 prot;
1709         struct iphdr *ip_hdr;
1710         unsigned char tg_addr[MAX_ADDR_LEN];
1711         int is_vlan = 0;
1712
1713         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1714                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1715                               ETH_P_IP);
1716                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1717                 case QETH_CAST_MULTICAST:
1718                         switch (prot) {
1719 #ifdef CONFIG_QETH_IPV6
1720                         case __constant_htons(ETH_P_IPV6):
1721                                 ndisc_mc_map((struct in6_addr *)
1722                                      skb->data + 24,
1723                                      tg_addr, card->dev, 0);
1724                                 break;
1725 #endif
1726                         case __constant_htons(ETH_P_IP):
1727                                 ip_hdr = (struct iphdr *)skb->data;
1728                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1729                                 break;
1730                         default:
1731                                 memcpy(tg_addr, card->dev->broadcast,
1732                                         card->dev->addr_len);
1733                         }
1734                         card->stats.multicast++;
1735                         skb->pkt_type = PACKET_MULTICAST;
1736                         break;
1737                 case QETH_CAST_BROADCAST:
1738                         memcpy(tg_addr, card->dev->broadcast,
1739                                 card->dev->addr_len);
1740                         card->stats.multicast++;
1741                         skb->pkt_type = PACKET_BROADCAST;
1742                         break;
1743                 case QETH_CAST_UNICAST:
1744                 case QETH_CAST_ANYCAST:
1745                 case QETH_CAST_NOCAST:
1746                 default:
1747                         if (card->options.sniffer)
1748                                 skb->pkt_type = PACKET_OTHERHOST;
1749                         else
1750                                 skb->pkt_type = PACKET_HOST;
1751                         memcpy(tg_addr, card->dev->dev_addr,
1752                                 card->dev->addr_len);
1753                 }
1754                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1755                         card->dev->header_ops->create(skb, card->dev, prot,
1756                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1757                                 card->dev->addr_len);
1758                 else
1759                         card->dev->header_ops->create(skb, card->dev, prot,
1760                                 tg_addr, "FAKELL", card->dev->addr_len);
1761         }
1762
1763         skb->protocol = eth_type_trans(skb, card->dev);
1764
1765         if (hdr->hdr.l3.ext_flags &
1766             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1767                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1768                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1769                 is_vlan = 1;
1770         }
1771
1772         if (card->dev->features & NETIF_F_RXCSUM) {
1773                 if ((hdr->hdr.l3.ext_flags &
1774                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1775                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1776                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1777                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1778                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1779                 else
1780                         skb->ip_summed = CHECKSUM_NONE;
1781         } else
1782                 skb->ip_summed = CHECKSUM_NONE;
1783         return is_vlan;
1784 }
1785
1786 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1787                                 int budget, int *done)
1788 {
1789         int work_done = 0;
1790         struct sk_buff *skb;
1791         struct qeth_hdr *hdr;
1792         __u16 vlan_tag = 0;
1793         int is_vlan;
1794         unsigned int len;
1795         __u16 magic;
1796
1797         *done = 0;
1798         WARN_ON_ONCE(!budget);
1799         while (budget) {
1800                 skb = qeth_core_get_next_skb(card,
1801                         &card->qdio.in_q->bufs[card->rx.b_index],
1802                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1803                 if (!skb) {
1804                         *done = 1;
1805                         break;
1806                 }
1807                 skb->dev = card->dev;
1808                 switch (hdr->hdr.l3.id) {
1809                 case QETH_HEADER_TYPE_LAYER3:
1810                         magic = *(__u16 *)skb->data;
1811                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1812                             (magic == ETH_P_AF_IUCV)) {
1813                                 skb->protocol = ETH_P_AF_IUCV;
1814                                 skb->pkt_type = PACKET_HOST;
1815                                 skb->mac_header = NET_SKB_PAD;
1816                                 skb->dev = card->dev;
1817                                 len = skb->len;
1818                                 card->dev->header_ops->create(skb, card->dev, 0,
1819                                         card->dev->dev_addr, "FAKELL",
1820                                         card->dev->addr_len);
1821                                 netif_receive_skb(skb);
1822                         } else {
1823                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1824                                                       &vlan_tag);
1825                                 len = skb->len;
1826                                 if (is_vlan && !card->options.sniffer)
1827                                         __vlan_hwaccel_put_tag(skb,
1828                                                 htons(ETH_P_8021Q), vlan_tag);
1829                                 napi_gro_receive(&card->napi, skb);
1830                         }
1831                         break;
1832                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1833                         skb->pkt_type = PACKET_HOST;
1834                         skb->protocol = eth_type_trans(skb, skb->dev);
1835                         len = skb->len;
1836                         netif_receive_skb(skb);
1837                         break;
1838                 default:
1839                         dev_kfree_skb_any(skb);
1840                         QETH_CARD_TEXT(card, 3, "inbunkno");
1841                         QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
1842                         continue;
1843                 }
1844                 work_done++;
1845                 budget--;
1846                 card->stats.rx_packets++;
1847                 card->stats.rx_bytes += len;
1848         }
1849         return work_done;
1850 }
1851
1852 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1853 {
1854         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1855         int work_done = 0;
1856         struct qeth_qdio_buffer *buffer;
1857         int done;
1858         int new_budget = budget;
1859
1860         if (card->options.performance_stats) {
1861                 card->perf_stats.inbound_cnt++;
1862                 card->perf_stats.inbound_start_time = qeth_get_micros();
1863         }
1864
1865         while (1) {
1866                 if (!card->rx.b_count) {
1867                         card->rx.qdio_err = 0;
1868                         card->rx.b_count = qdio_get_next_buffers(
1869                                 card->data.ccwdev, 0, &card->rx.b_index,
1870                                 &card->rx.qdio_err);
1871                         if (card->rx.b_count <= 0) {
1872                                 card->rx.b_count = 0;
1873                                 break;
1874                         }
1875                         card->rx.b_element =
1876                                 &card->qdio.in_q->bufs[card->rx.b_index]
1877                                 .buffer->element[0];
1878                         card->rx.e_offset = 0;
1879                 }
1880
1881                 while (card->rx.b_count) {
1882                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
1883                         if (!(card->rx.qdio_err &&
1884                             qeth_check_qdio_errors(card, buffer->buffer,
1885                             card->rx.qdio_err, "qinerr")))
1886                                 work_done += qeth_l3_process_inbound_buffer(
1887                                         card, new_budget, &done);
1888                         else
1889                                 done = 1;
1890
1891                         if (done) {
1892                                 if (card->options.performance_stats)
1893                                         card->perf_stats.bufs_rec++;
1894                                 qeth_put_buffer_pool_entry(card,
1895                                         buffer->pool_entry);
1896                                 qeth_queue_input_buffer(card, card->rx.b_index);
1897                                 card->rx.b_count--;
1898                                 if (card->rx.b_count) {
1899                                         card->rx.b_index =
1900                                                 (card->rx.b_index + 1) %
1901                                                 QDIO_MAX_BUFFERS_PER_Q;
1902                                         card->rx.b_element =
1903                                                 &card->qdio.in_q
1904                                                 ->bufs[card->rx.b_index]
1905                                                 .buffer->element[0];
1906                                         card->rx.e_offset = 0;
1907                                 }
1908                         }
1909
1910                         if (work_done >= budget)
1911                                 goto out;
1912                         else
1913                                 new_budget = budget - work_done;
1914                 }
1915         }
1916
1917         napi_complete(napi);
1918         if (qdio_start_irq(card->data.ccwdev, 0))
1919                 napi_schedule(&card->napi);
1920 out:
1921         if (card->options.performance_stats)
1922                 card->perf_stats.inbound_time += qeth_get_micros() -
1923                         card->perf_stats.inbound_start_time;
1924         return work_done;
1925 }
1926
1927 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1928                         struct qeth_card *card)
1929 {
1930         int rc = 0;
1931         u16 vid;
1932
1933         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1934                 struct net_device *netdev;
1935
1936                 rcu_read_lock();
1937                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1938                                               vid);
1939                 rcu_read_unlock();
1940                 if (netdev == dev) {
1941                         rc = QETH_VLAN_CARD;
1942                         break;
1943                 }
1944         }
1945
1946         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
1947                 return 0;
1948
1949         return rc;
1950 }
1951
1952 static int qeth_l3_verify_dev(struct net_device *dev)
1953 {
1954         struct qeth_card *card;
1955         int rc = 0;
1956         unsigned long flags;
1957
1958         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
1959         list_for_each_entry(card, &qeth_core_card_list.list, list) {
1960                 if (card->dev == dev) {
1961                         rc = QETH_REAL_CARD;
1962                         break;
1963                 }
1964                 rc = qeth_l3_verify_vlan_dev(dev, card);
1965                 if (rc)
1966                         break;
1967         }
1968         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
1969
1970         return rc;
1971 }
1972
1973 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
1974 {
1975         struct qeth_card *card = NULL;
1976         int rc;
1977
1978         rc = qeth_l3_verify_dev(dev);
1979         if (rc == QETH_REAL_CARD)
1980                 card = dev->ml_priv;
1981         else if (rc == QETH_VLAN_CARD)
1982                 card = vlan_dev_real_dev(dev)->ml_priv;
1983         if (card && card->options.layer2)
1984                 card = NULL;
1985         if (card)
1986                 QETH_CARD_TEXT_(card, 4, "%d", rc);
1987         return card ;
1988 }
1989
1990 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1991 {
1992         QETH_DBF_TEXT(SETUP, 2, "stopcard");
1993         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1994
1995         qeth_set_allowed_threads(card, 0, 1);
1996         if (card->options.sniffer &&
1997             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1998                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1999         if (card->read.state == CH_STATE_UP &&
2000             card->write.state == CH_STATE_UP &&
2001             (card->state == CARD_STATE_UP)) {
2002                 if (recovery_mode)
2003                         qeth_l3_stop(card->dev);
2004                 else {
2005                         rtnl_lock();
2006                         dev_close(card->dev);
2007                         rtnl_unlock();
2008                 }
2009                 card->state = CARD_STATE_SOFTSETUP;
2010         }
2011         if (card->state == CARD_STATE_SOFTSETUP) {
2012                 qeth_l3_clear_ip_htable(card, 1);
2013                 qeth_clear_ipacmd_list(card);
2014                 card->state = CARD_STATE_HARDSETUP;
2015         }
2016         if (card->state == CARD_STATE_HARDSETUP) {
2017                 qeth_qdio_clear_card(card, 0);
2018                 qeth_clear_qdio_buffers(card);
2019                 qeth_clear_working_pool_list(card);
2020                 card->state = CARD_STATE_DOWN;
2021         }
2022         if (card->state == CARD_STATE_DOWN) {
2023                 qeth_clear_cmd_buffers(&card->read);
2024                 qeth_clear_cmd_buffers(&card->write);
2025         }
2026 }
2027
2028 /*
2029  * test for and Switch promiscuous mode (on or off)
2030  *  either for guestlan or HiperSocket Sniffer
2031  */
2032 static void
2033 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2034 {
2035         struct net_device *dev = card->dev;
2036
2037         if (((dev->flags & IFF_PROMISC) &&
2038              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2039             (!(dev->flags & IFF_PROMISC) &&
2040              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2041                 return;
2042
2043         if (card->info.guestlan) {              /* Guestlan trace */
2044                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2045                         qeth_setadp_promisc_mode(card);
2046         } else if (card->options.sniffer &&     /* HiperSockets trace */
2047                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2048                 if (dev->flags & IFF_PROMISC) {
2049                         QETH_CARD_TEXT(card, 3, "+promisc");
2050                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2051                 } else {
2052                         QETH_CARD_TEXT(card, 3, "-promisc");
2053                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2054                 }
2055         }
2056 }
2057
2058 static void qeth_l3_set_multicast_list(struct net_device *dev)
2059 {
2060         struct qeth_card *card = dev->ml_priv;
2061
2062         QETH_CARD_TEXT(card, 3, "setmulti");
2063         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2064             (card->state != CARD_STATE_UP))
2065                 return;
2066         if (!card->options.sniffer) {
2067
2068                 spin_lock_bh(&card->mclock);
2069
2070                 qeth_l3_mark_all_mc_to_be_deleted(card);
2071
2072                 qeth_l3_add_multicast_ipv4(card);
2073 #ifdef CONFIG_QETH_IPV6
2074                 qeth_l3_add_multicast_ipv6(card);
2075 #endif
2076                 qeth_l3_delete_nonused_mc(card);
2077                 qeth_l3_add_all_new_mc(card);
2078
2079                 spin_unlock_bh(&card->mclock);
2080
2081                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2082                         return;
2083         }
2084         qeth_l3_handle_promisc_mode(card);
2085 }
2086
2087 static const char *qeth_l3_arp_get_error_cause(int *rc)
2088 {
2089         switch (*rc) {
2090         case QETH_IPA_ARP_RC_FAILED:
2091                 *rc = -EIO;
2092                 return "operation failed";
2093         case QETH_IPA_ARP_RC_NOTSUPP:
2094                 *rc = -EOPNOTSUPP;
2095                 return "operation not supported";
2096         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2097                 *rc = -EINVAL;
2098                 return "argument out of range";
2099         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2100                 *rc = -EOPNOTSUPP;
2101                 return "query operation not supported";
2102         case QETH_IPA_ARP_RC_Q_NO_DATA:
2103                 *rc = -ENOENT;
2104                 return "no query data available";
2105         default:
2106                 return "unknown error";
2107         }
2108 }
2109
2110 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2111 {
2112         int tmp;
2113         int rc;
2114
2115         QETH_CARD_TEXT(card, 3, "arpstnoe");
2116
2117         /*
2118          * currently GuestLAN only supports the ARP assist function
2119          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2120          * thus we say EOPNOTSUPP for this ARP function
2121          */
2122         if (card->info.guestlan)
2123                 return -EOPNOTSUPP;
2124         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2125                 return -EOPNOTSUPP;
2126         }
2127         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2128                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2129                                           no_entries);
2130         if (rc) {
2131                 tmp = rc;
2132                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2133                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2134                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2135         }
2136         return rc;
2137 }
2138
2139 static __u32 get_arp_entry_size(struct qeth_card *card,
2140                         struct qeth_arp_query_data *qdata,
2141                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2142 {
2143         __u32 rc;
2144         __u8 is_hsi;
2145
2146         is_hsi = qdata->reply_bits == 5;
2147         if (type->ip == QETHARP_IP_ADDR_V4) {
2148                 QETH_CARD_TEXT(card, 4, "arpev4");
2149                 if (strip_entries) {
2150                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2151                                 sizeof(struct qeth_arp_qi_entry7_short);
2152                 } else {
2153                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2154                                 sizeof(struct qeth_arp_qi_entry7);
2155                 }
2156         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2157                 QETH_CARD_TEXT(card, 4, "arpev6");
2158                 if (strip_entries) {
2159                         rc = is_hsi ?
2160                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2161                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2162                 } else {
2163                         rc = is_hsi ?
2164                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2165                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2166                 }
2167         } else {
2168                 QETH_CARD_TEXT(card, 4, "arpinv");
2169                 rc = 0;
2170         }
2171
2172         return rc;
2173 }
2174
2175 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2176 {
2177         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2178                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2179 }
2180
2181 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2182                 struct qeth_reply *reply, unsigned long data)
2183 {
2184         struct qeth_ipa_cmd *cmd;
2185         struct qeth_arp_query_data *qdata;
2186         struct qeth_arp_query_info *qinfo;
2187         int i;
2188         int e;
2189         int entrybytes_done;
2190         int stripped_bytes;
2191         __u8 do_strip_entries;
2192
2193         QETH_CARD_TEXT(card, 3, "arpquecb");
2194
2195         qinfo = (struct qeth_arp_query_info *) reply->param;
2196         cmd = (struct qeth_ipa_cmd *) data;
2197         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2198         if (cmd->hdr.return_code) {
2199                 QETH_CARD_TEXT(card, 4, "arpcberr");
2200                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2201                 return 0;
2202         }
2203         if (cmd->data.setassparms.hdr.return_code) {
2204                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2205                 QETH_CARD_TEXT(card, 4, "setaperr");
2206                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2207                 return 0;
2208         }
2209         qdata = &cmd->data.setassparms.data.query_arp;
2210         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2211
2212         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2213         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2214         entrybytes_done = 0;
2215         for (e = 0; e < qdata->no_entries; ++e) {
2216                 char *cur_entry;
2217                 __u32 esize;
2218                 struct qeth_arp_entrytype *etype;
2219
2220                 cur_entry = &qdata->data + entrybytes_done;
2221                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2222                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2223                         QETH_CARD_TEXT(card, 4, "pmis");
2224                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2225                         break;
2226                 }
2227                 esize = get_arp_entry_size(card, qdata, etype,
2228                         do_strip_entries);
2229                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2230                 if (!esize)
2231                         break;
2232
2233                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2234                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2235                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2236                         goto out_error;
2237                 }
2238
2239                 memcpy(qinfo->udata + qinfo->udata_offset,
2240                         &qdata->data + entrybytes_done + stripped_bytes,
2241                         esize);
2242                 entrybytes_done += esize + stripped_bytes;
2243                 qinfo->udata_offset += esize;
2244                 ++qinfo->no_entries;
2245         }
2246         /* check if all replies received ... */
2247         if (cmd->data.setassparms.hdr.seq_no <
2248             cmd->data.setassparms.hdr.number_of_replies)
2249                 return 1;
2250         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2251         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2252         /* keep STRIP_ENTRIES flag so the user program can distinguish
2253          * stripped entries from normal ones */
2254         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2255                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2256         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2257         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2258         return 0;
2259 out_error:
2260         i = 0;
2261         memcpy(qinfo->udata, &i, 4);
2262         return 0;
2263 }
2264
2265 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2266                 struct qeth_cmd_buffer *iob, int len,
2267                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2268                         unsigned long),
2269                 void *reply_param)
2270 {
2271         QETH_CARD_TEXT(card, 4, "sendarp");
2272
2273         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2274         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2275                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2276         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2277                                       reply_cb, reply_param);
2278 }
2279
2280 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2281         enum qeth_prot_versions prot,
2282         struct qeth_arp_query_info *qinfo)
2283 {
2284         struct qeth_cmd_buffer *iob;
2285         struct qeth_ipa_cmd *cmd;
2286         int tmp;
2287         int rc;
2288
2289         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2290
2291         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2292                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2293                                        sizeof(struct qeth_arp_query_data)
2294                                                 - sizeof(char),
2295                                        prot);
2296         if (!iob)
2297                 return -ENOMEM;
2298         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2299         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2300         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2301         cmd->data.setassparms.data.query_arp.no_entries = 0;
2302         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2303                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2304                            qeth_l3_arp_query_cb, (void *)qinfo);
2305         if (rc) {
2306                 tmp = rc;
2307                 QETH_DBF_MESSAGE(2,
2308                         "Error while querying ARP cache on %s: %s "
2309                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2310                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2311         }
2312
2313         return rc;
2314 }
2315
2316 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2317 {
2318         struct qeth_arp_query_info qinfo = {0, };
2319         int rc;
2320
2321         QETH_CARD_TEXT(card, 3, "arpquery");
2322
2323         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2324                                IPA_ARP_PROCESSING)) {
2325                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2326                 rc = -EOPNOTSUPP;
2327                 goto out;
2328         }
2329         /* get size of userspace buffer and mask_bits -> 6 bytes */
2330         if (copy_from_user(&qinfo, udata, 6)) {
2331                 rc = -EFAULT;
2332                 goto out;
2333         }
2334         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2335         if (!qinfo.udata) {
2336                 rc = -ENOMEM;
2337                 goto out;
2338         }
2339         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2340         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2341         if (rc) {
2342                 if (copy_to_user(udata, qinfo.udata, 4))
2343                         rc = -EFAULT;
2344                 goto free_and_out;
2345         }
2346 #ifdef CONFIG_QETH_IPV6
2347         if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2348                 /* fails in case of GuestLAN QDIO mode */
2349                 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
2350         }
2351 #endif
2352         if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2353                 QETH_CARD_TEXT(card, 4, "qactf");
2354                 rc = -EFAULT;
2355                 goto free_and_out;
2356         }
2357         QETH_CARD_TEXT(card, 4, "qacts");
2358
2359 free_and_out:
2360         kfree(qinfo.udata);
2361 out:
2362         return rc;
2363 }
2364
2365 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2366                                 struct qeth_arp_cache_entry *entry)
2367 {
2368         struct qeth_cmd_buffer *iob;
2369         char buf[16];
2370         int tmp;
2371         int rc;
2372
2373         QETH_CARD_TEXT(card, 3, "arpadent");
2374
2375         /*
2376          * currently GuestLAN only supports the ARP assist function
2377          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2378          * thus we say EOPNOTSUPP for this ARP function
2379          */
2380         if (card->info.guestlan)
2381                 return -EOPNOTSUPP;
2382         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2383                 return -EOPNOTSUPP;
2384         }
2385
2386         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2387                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2388                                        sizeof(struct qeth_arp_cache_entry),
2389                                        QETH_PROT_IPV4);
2390         if (!iob)
2391                 return -ENOMEM;
2392         rc = qeth_send_setassparms(card, iob,
2393                                    sizeof(struct qeth_arp_cache_entry),
2394                                    (unsigned long) entry,
2395                                    qeth_setassparms_cb, NULL);
2396         if (rc) {
2397                 tmp = rc;
2398                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2399                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2400                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2401                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2402         }
2403         return rc;
2404 }
2405
2406 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2407                                 struct qeth_arp_cache_entry *entry)
2408 {
2409         struct qeth_cmd_buffer *iob;
2410         char buf[16] = {0, };
2411         int tmp;
2412         int rc;
2413
2414         QETH_CARD_TEXT(card, 3, "arprment");
2415
2416         /*
2417          * currently GuestLAN only supports the ARP assist function
2418          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2419          * thus we say EOPNOTSUPP for this ARP function
2420          */
2421         if (card->info.guestlan)
2422                 return -EOPNOTSUPP;
2423         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2424                 return -EOPNOTSUPP;
2425         }
2426         memcpy(buf, entry, 12);
2427         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2428                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2429                                        12,
2430                                        QETH_PROT_IPV4);
2431         if (!iob)
2432                 return -ENOMEM;
2433         rc = qeth_send_setassparms(card, iob,
2434                                    12, (unsigned long)buf,
2435                                    qeth_setassparms_cb, NULL);
2436         if (rc) {
2437                 tmp = rc;
2438                 memset(buf, 0, 16);
2439                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2440                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2441                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2442                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2443         }
2444         return rc;
2445 }
2446
2447 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2448 {
2449         int rc;
2450         int tmp;
2451
2452         QETH_CARD_TEXT(card, 3, "arpflush");
2453
2454         /*
2455          * currently GuestLAN only supports the ARP assist function
2456          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2457          * thus we say EOPNOTSUPP for this ARP function
2458         */
2459         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2460                 return -EOPNOTSUPP;
2461         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2462                 return -EOPNOTSUPP;
2463         }
2464         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2465                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2466         if (rc) {
2467                 tmp = rc;
2468                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2469                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2470                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2471         }
2472         return rc;
2473 }
2474
2475 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2476 {
2477         struct qeth_card *card = dev->ml_priv;
2478         struct qeth_arp_cache_entry arp_entry;
2479         struct mii_ioctl_data *mii_data;
2480         int rc = 0;
2481
2482         if (!card)
2483                 return -ENODEV;
2484
2485         if (!qeth_card_hw_is_reachable(card))
2486                 return -ENODEV;
2487
2488         switch (cmd) {
2489         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2490                 if (!capable(CAP_NET_ADMIN)) {
2491                         rc = -EPERM;
2492                         break;
2493                 }
2494                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2495                 break;
2496         case SIOC_QETH_ARP_QUERY_INFO:
2497                 if (!capable(CAP_NET_ADMIN)) {
2498                         rc = -EPERM;
2499                         break;
2500                 }
2501                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2502                 break;
2503         case SIOC_QETH_ARP_ADD_ENTRY:
2504                 if (!capable(CAP_NET_ADMIN)) {
2505                         rc = -EPERM;
2506                         break;
2507                 }
2508                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2509                                    sizeof(struct qeth_arp_cache_entry)))
2510                         rc = -EFAULT;
2511                 else
2512                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2513                 break;
2514         case SIOC_QETH_ARP_REMOVE_ENTRY:
2515                 if (!capable(CAP_NET_ADMIN)) {
2516                         rc = -EPERM;
2517                         break;
2518                 }
2519                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2520                                    sizeof(struct qeth_arp_cache_entry)))
2521                         rc = -EFAULT;
2522                 else
2523                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2524                 break;
2525         case SIOC_QETH_ARP_FLUSH_CACHE:
2526                 if (!capable(CAP_NET_ADMIN)) {
2527                         rc = -EPERM;
2528                         break;
2529                 }
2530                 rc = qeth_l3_arp_flush_cache(card);
2531                 break;
2532         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2533                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2534                 break;
2535         case SIOC_QETH_GET_CARD_TYPE:
2536                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2537                      card->info.type == QETH_CARD_TYPE_OSX) &&
2538                     !card->info.guestlan)
2539                         return 1;
2540                 return 0;
2541                 break;
2542         case SIOCGMIIPHY:
2543                 mii_data = if_mii(rq);
2544                 mii_data->phy_id = 0;
2545                 break;
2546         case SIOCGMIIREG:
2547                 mii_data = if_mii(rq);
2548                 if (mii_data->phy_id != 0)
2549                         rc = -EINVAL;
2550                 else
2551                         mii_data->val_out = qeth_mdio_read(dev,
2552                                                         mii_data->phy_id,
2553                                                         mii_data->reg_num);
2554                 break;
2555         case SIOC_QETH_QUERY_OAT:
2556                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2557                 break;
2558         default:
2559                 rc = -EOPNOTSUPP;
2560         }
2561         if (rc)
2562                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2563         return rc;
2564 }
2565
2566 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2567 {
2568         int cast_type = RTN_UNSPEC;
2569         struct neighbour *n = NULL;
2570         struct dst_entry *dst;
2571
2572         rcu_read_lock();
2573         dst = skb_dst(skb);
2574         if (dst)
2575                 n = dst_neigh_lookup_skb(dst, skb);
2576         if (n) {
2577                 cast_type = n->type;
2578                 rcu_read_unlock();
2579                 neigh_release(n);
2580                 if ((cast_type == RTN_BROADCAST) ||
2581                     (cast_type == RTN_MULTICAST) ||
2582                     (cast_type == RTN_ANYCAST))
2583                         return cast_type;
2584                 else
2585                         return RTN_UNSPEC;
2586         }
2587         rcu_read_unlock();
2588
2589         /* try something else */
2590         if (skb->protocol == ETH_P_IPV6)
2591                 return (skb_network_header(skb)[24] == 0xff) ?
2592                                 RTN_MULTICAST : 0;
2593         else if (skb->protocol == ETH_P_IP)
2594                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2595                                 RTN_MULTICAST : 0;
2596         /* ... */
2597         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2598                 return RTN_BROADCAST;
2599         else {
2600                 u16 hdr_mac;
2601
2602                 hdr_mac = *((u16 *)skb->data);
2603                 /* tr multicast? */
2604                 switch (card->info.link_type) {
2605                 case QETH_LINK_TYPE_HSTR:
2606                 case QETH_LINK_TYPE_LANE_TR:
2607                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2608                             (hdr_mac == QETH_TR_MAC_C))
2609                                 return RTN_MULTICAST;
2610                         break;
2611                 /* eth or so multicast? */
2612                 default:
2613                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2614                             (hdr_mac == QETH_ETH_MAC_V6))
2615                                 return RTN_MULTICAST;
2616                 }
2617         }
2618         return cast_type;
2619 }
2620
2621 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2622                 struct qeth_hdr *hdr, struct sk_buff *skb)
2623 {
2624         char daddr[16];
2625         struct af_iucv_trans_hdr *iucv_hdr;
2626
2627         memset(hdr, 0, sizeof(struct qeth_hdr));
2628         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2629         hdr->hdr.l3.ext_flags = 0;
2630         hdr->hdr.l3.length = skb->len - ETH_HLEN;
2631         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2632
2633         iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN);
2634         memset(daddr, 0, sizeof(daddr));
2635         daddr[0] = 0xfe;
2636         daddr[1] = 0x80;
2637         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2638         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2639 }
2640
2641 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2642                 struct sk_buff *skb, int ipv, int cast_type)
2643 {
2644         struct dst_entry *dst;
2645
2646         memset(hdr, 0, sizeof(struct qeth_hdr));
2647         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2648         hdr->hdr.l3.ext_flags = 0;
2649
2650         /*
2651          * before we're going to overwrite this location with next hop ip.
2652          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2653          */
2654         if (skb_vlan_tag_present(skb)) {
2655                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2656                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2657                 else
2658                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2659                 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2660         }
2661
2662         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2663
2664         rcu_read_lock();
2665         dst = skb_dst(skb);
2666         if (ipv == 4) {
2667                 struct rtable *rt = (struct rtable *) dst;
2668                 __be32 *pkey = &ip_hdr(skb)->daddr;
2669
2670                 if (rt->rt_gateway)
2671                         pkey = &rt->rt_gateway;
2672
2673                 /* IPv4 */
2674                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2675                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2676                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2677         } else if (ipv == 6) {
2678                 struct rt6_info *rt = (struct rt6_info *) dst;
2679                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2680
2681                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2682                         pkey = &rt->rt6i_gateway;
2683
2684                 /* IPv6 */
2685                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2686                 if (card->info.type == QETH_CARD_TYPE_IQD)
2687                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2688                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2689         } else {
2690                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2691                             skb->dev->broadcast, 6)) {
2692                         /* broadcast? */
2693                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2694                                                 QETH_HDR_PASSTHRU;
2695                 } else {
2696                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2697                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2698                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2699                 }
2700         }
2701         rcu_read_unlock();
2702 }
2703
2704 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2705                 struct qeth_hdr *hdr, struct sk_buff *skb)
2706 {
2707         struct iphdr *iph = ip_hdr(skb);
2708
2709         /* tcph->check contains already the pseudo hdr checksum
2710          * so just set the header flags
2711          */
2712         if (iph->protocol == IPPROTO_UDP)
2713                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2714         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2715                 QETH_HDR_EXT_CSUM_HDR_REQ;
2716         iph->check = 0;
2717         if (card->options.performance_stats)
2718                 card->perf_stats.tx_csum++;
2719 }
2720
2721 static void qeth_tso_fill_header(struct qeth_card *card,
2722                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2723 {
2724         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2725         struct tcphdr *tcph = tcp_hdr(skb);
2726         struct iphdr *iph = ip_hdr(skb);
2727         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2728
2729         /*fix header to TSO values ...*/
2730         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2731         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2732         /*set values which are fix for the first approach ...*/
2733         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2734         hdr->ext.imb_hdr_no  = 1;
2735         hdr->ext.hdr_type    = 1;
2736         hdr->ext.hdr_version = 1;
2737         hdr->ext.hdr_len     = 28;
2738         /*insert non-fix values */
2739         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2740         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2741         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2742                                        sizeof(struct qeth_hdr_tso));
2743         tcph->check = 0;
2744         if (skb->protocol == ETH_P_IPV6) {
2745                 ip6h->payload_len = 0;
2746                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2747                                                0, IPPROTO_TCP, 0);
2748         } else {
2749                 /*OSA want us to set these values ...*/
2750                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2751                                          0, IPPROTO_TCP, 0);
2752                 iph->tot_len = 0;
2753                 iph->check = 0;
2754         }
2755 }
2756
2757 /**
2758  * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2759  * @card:                          qeth card structure, to check max. elems.
2760  * @skb:                           SKB address
2761  * @extra_elems:                   extra elems needed, to check against max.
2762  *
2763  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2764  * skb data, including linear part and fragments, but excluding TCP header.
2765  * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2766  * Checks if the result plus extra_elems fits under the limit for the card.
2767  * Returns 0 if it does not.
2768  * Note: extra_elems is not included in the returned result.
2769  */
2770 static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2771                         struct sk_buff *skb, int extra_elems)
2772 {
2773         addr_t start = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2774         addr_t end = (addr_t)skb->data + skb_headlen(skb);
2775         int elements = qeth_get_elements_for_frags(skb);
2776
2777         if (start != end)
2778                 elements += qeth_get_elements_for_range(start, end);
2779
2780         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2781                 QETH_DBF_MESSAGE(2,
2782         "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2783                                 elements + extra_elems, skb->len);
2784                 return 0;
2785         }
2786         return elements;
2787 }
2788
2789 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2790 {
2791         int rc;
2792         u16 *tag;
2793         struct qeth_hdr *hdr = NULL;
2794         int hdr_elements = 0;
2795         int elements;
2796         struct qeth_card *card = dev->ml_priv;
2797         struct sk_buff *new_skb = NULL;
2798         int ipv = qeth_get_ip_version(skb);
2799         int cast_type = qeth_l3_get_cast_type(card, skb);
2800         struct qeth_qdio_out_q *queue =
2801                 card->qdio.out_qs[card->qdio.do_prio_queueing
2802                         || (cast_type && card->info.is_multicast_different) ?
2803                         qeth_get_priority_queue(card, skb, ipv, cast_type) :
2804                         card->qdio.default_out_queue];
2805         int tx_bytes = skb->len;
2806         bool use_tso;
2807         int data_offset = -1;
2808         int nr_frags;
2809
2810         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2811              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2812               ((card->options.cq == QETH_CQ_ENABLED) &&
2813                (skb->protocol != ETH_P_AF_IUCV)))) ||
2814             card->options.sniffer)
2815                         goto tx_drop;
2816
2817         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2818                 card->stats.tx_carrier_errors++;
2819                 goto tx_drop;
2820         }
2821
2822         if ((cast_type == RTN_BROADCAST) &&
2823             (card->info.broadcast_capable == 0))
2824                 goto tx_drop;
2825
2826         if (card->options.performance_stats) {
2827                 card->perf_stats.outbound_cnt++;
2828                 card->perf_stats.outbound_start_time = qeth_get_micros();
2829         }
2830
2831         /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2832         use_tso = skb_is_gso(skb) &&
2833                   (qeth_get_ip_protocol(skb) == IPPROTO_TCP) && (ipv == 4);
2834
2835         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2836             !skb_is_nonlinear(skb)) {
2837                 new_skb = skb;
2838                 data_offset = ETH_HLEN;
2839                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2840                 if (!hdr)
2841                         goto tx_drop;
2842                 hdr_elements++;
2843         } else {
2844                 /* create a clone with writeable headroom */
2845                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2846                                         + VLAN_HLEN);
2847                 if (!new_skb)
2848                         goto tx_drop;
2849         }
2850
2851         if (card->info.type == QETH_CARD_TYPE_IQD) {
2852                 if (data_offset < 0)
2853                         skb_pull(new_skb, ETH_HLEN);
2854         } else {
2855                 if (ipv == 4) {
2856                         skb_pull(new_skb, ETH_HLEN);
2857                 }
2858
2859                 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2860                         skb_push(new_skb, VLAN_HLEN);
2861                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2862                         skb_copy_to_linear_data_offset(new_skb, 4,
2863                                 new_skb->data + 8, 4);
2864                         skb_copy_to_linear_data_offset(new_skb, 8,
2865                                 new_skb->data + 12, 4);
2866                         tag = (u16 *)(new_skb->data + 12);
2867                         *tag = __constant_htons(ETH_P_8021Q);
2868                         *(tag + 1) = htons(skb_vlan_tag_get(new_skb));
2869                 }
2870         }
2871
2872         netif_stop_queue(dev);
2873
2874         /* fix hardware limitation: as long as we do not have sbal
2875          * chaining we can not send long frag lists
2876          */
2877         if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2878             ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2879              (!use_tso && !qeth_get_elements_no(card, new_skb, 0, 0)))) {
2880                 int lin_rc = skb_linearize(new_skb);
2881
2882                 if (card->options.performance_stats) {
2883                         if (lin_rc)
2884                                 card->perf_stats.tx_linfail++;
2885                         else
2886                                 card->perf_stats.tx_lin++;
2887                 }
2888                 if (lin_rc)
2889                         goto tx_drop;
2890         }
2891
2892         if (use_tso) {
2893                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2894                                                 sizeof(struct qeth_hdr_tso));
2895                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2896                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2897                 qeth_tso_fill_header(card, hdr, new_skb);
2898                 hdr_elements++;
2899         } else {
2900                 if (data_offset < 0) {
2901                         hdr = (struct qeth_hdr *)skb_push(new_skb,
2902                                                 sizeof(struct qeth_hdr));
2903                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2904                                                 cast_type);
2905                 } else {
2906                         if (new_skb->protocol == ETH_P_AF_IUCV)
2907                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2908                         else {
2909                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2910                                                         cast_type);
2911                                 hdr->hdr.l3.length = new_skb->len - data_offset;
2912                         }
2913                 }
2914
2915                 if (skb->ip_summed == CHECKSUM_PARTIAL)
2916                         qeth_l3_hdr_csum(card, hdr, new_skb);
2917         }
2918
2919         elements = use_tso ?
2920                    qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2921                    qeth_get_elements_no(card, new_skb, hdr_elements,
2922                                         (data_offset > 0) ? data_offset : 0);
2923         if (!elements) {
2924                 if (data_offset >= 0)
2925                         kmem_cache_free(qeth_core_header_cache, hdr);
2926                 goto tx_drop;
2927         }
2928         elements += hdr_elements;
2929
2930         if (card->info.type != QETH_CARD_TYPE_IQD) {
2931                 int len;
2932                 if (use_tso)
2933                         len = ((unsigned long)tcp_hdr(new_skb) +
2934                                 tcp_hdrlen(new_skb)) -
2935                                 (unsigned long)new_skb->data;
2936                 else
2937                         len = sizeof(struct qeth_hdr_layer3);
2938
2939                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2940                         goto tx_drop;
2941                 rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements);
2942         } else
2943                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2944                                         elements, data_offset, 0);
2945
2946         if (!rc) {
2947                 card->stats.tx_packets++;
2948                 card->stats.tx_bytes += tx_bytes;
2949                 if (new_skb != skb)
2950                         dev_kfree_skb_any(skb);
2951                 if (card->options.performance_stats) {
2952                         nr_frags = skb_shinfo(new_skb)->nr_frags;
2953                         if (use_tso) {
2954                                 card->perf_stats.large_send_bytes += tx_bytes;
2955                                 card->perf_stats.large_send_cnt++;
2956                         }
2957                         if (nr_frags) {
2958                                 card->perf_stats.sg_skbs_sent++;
2959                                 /* nr_frags + skb->data */
2960                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
2961                         }
2962                 }
2963                 rc = NETDEV_TX_OK;
2964         } else {
2965                 if (data_offset >= 0)
2966                         kmem_cache_free(qeth_core_header_cache, hdr);
2967
2968                 if (rc == -EBUSY) {
2969                         if (new_skb != skb)
2970                                 dev_kfree_skb_any(new_skb);
2971                         return NETDEV_TX_BUSY;
2972                 } else
2973                         goto tx_drop;
2974         }
2975
2976         netif_wake_queue(dev);
2977         if (card->options.performance_stats)
2978                 card->perf_stats.outbound_time += qeth_get_micros() -
2979                         card->perf_stats.outbound_start_time;
2980         return rc;
2981
2982 tx_drop:
2983         card->stats.tx_dropped++;
2984         card->stats.tx_errors++;
2985         if ((new_skb != skb) && new_skb)
2986                 dev_kfree_skb_any(new_skb);
2987         dev_kfree_skb_any(skb);
2988         netif_wake_queue(dev);
2989         return NETDEV_TX_OK;
2990 }
2991
2992 static int __qeth_l3_open(struct net_device *dev)
2993 {
2994         struct qeth_card *card = dev->ml_priv;
2995         int rc = 0;
2996
2997         QETH_CARD_TEXT(card, 4, "qethopen");
2998         if (card->state == CARD_STATE_UP)
2999                 return rc;
3000         if (card->state != CARD_STATE_SOFTSETUP)
3001                 return -ENODEV;
3002         card->data.state = CH_STATE_UP;
3003         card->state = CARD_STATE_UP;
3004         netif_start_queue(dev);
3005
3006         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3007                 napi_enable(&card->napi);
3008                 local_bh_disable();
3009                 napi_schedule(&card->napi);
3010                 /* kick-start the NAPI softirq: */
3011                 local_bh_enable();
3012         } else
3013                 rc = -EIO;
3014         return rc;
3015 }
3016
3017 static int qeth_l3_open(struct net_device *dev)
3018 {
3019         struct qeth_card *card = dev->ml_priv;
3020
3021         QETH_CARD_TEXT(card, 5, "qethope_");
3022         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3023                 QETH_CARD_TEXT(card, 3, "openREC");
3024                 return -ERESTARTSYS;
3025         }
3026         return __qeth_l3_open(dev);
3027 }
3028
3029 static int qeth_l3_stop(struct net_device *dev)
3030 {
3031         struct qeth_card *card = dev->ml_priv;
3032
3033         QETH_CARD_TEXT(card, 4, "qethstop");
3034         netif_tx_disable(dev);
3035         if (card->state == CARD_STATE_UP) {
3036                 card->state = CARD_STATE_SOFTSETUP;
3037                 napi_disable(&card->napi);
3038         }
3039         return 0;
3040 }
3041
3042 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3043         .get_link = ethtool_op_get_link,
3044         .get_strings = qeth_core_get_strings,
3045         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3046         .get_sset_count = qeth_core_get_sset_count,
3047         .get_drvinfo = qeth_core_get_drvinfo,
3048         .get_settings = qeth_core_ethtool_get_settings,
3049 };
3050
3051 /*
3052  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3053  * NOARP on the netdevice is no option because it also turns off neighbor
3054  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3055  * arp resolution but we want the hard header (packet socket will work
3056  * e.g. tcpdump)
3057  */
3058 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3059 {
3060         n->nud_state = NUD_NOARP;
3061         memcpy(n->ha, "FAKELL", 6);
3062         n->output = n->ops->connected_output;
3063         return 0;
3064 }
3065
3066 static int
3067 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3068 {
3069         if (np->tbl->family == AF_INET)
3070                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3071
3072         return 0;
3073 }
3074
3075 static const struct net_device_ops qeth_l3_netdev_ops = {
3076         .ndo_open               = qeth_l3_open,
3077         .ndo_stop               = qeth_l3_stop,
3078         .ndo_get_stats          = qeth_get_stats,
3079         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3080         .ndo_features_check     = qeth_features_check,
3081         .ndo_validate_addr      = eth_validate_addr,
3082         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3083         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3084         .ndo_change_mtu         = qeth_change_mtu,
3085         .ndo_fix_features       = qeth_fix_features,
3086         .ndo_set_features       = qeth_set_features,
3087         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3088         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3089         .ndo_tx_timeout         = qeth_tx_timeout,
3090 };
3091
3092 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3093         .ndo_open               = qeth_l3_open,
3094         .ndo_stop               = qeth_l3_stop,
3095         .ndo_get_stats          = qeth_get_stats,
3096         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3097         .ndo_validate_addr      = eth_validate_addr,
3098         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3099         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3100         .ndo_change_mtu         = qeth_change_mtu,
3101         .ndo_fix_features       = qeth_fix_features,
3102         .ndo_set_features       = qeth_set_features,
3103         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3104         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3105         .ndo_tx_timeout         = qeth_tx_timeout,
3106         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3107 };
3108
3109 static int qeth_l3_setup_netdev(struct qeth_card *card)
3110 {
3111         int rc;
3112
3113         if (card->info.type == QETH_CARD_TYPE_OSD ||
3114             card->info.type == QETH_CARD_TYPE_OSX) {
3115                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3116                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3117                         pr_info("qeth_l3: ignoring TR device\n");
3118                         return -ENODEV;
3119                 } else {
3120                         card->dev = alloc_etherdev(0);
3121                         if (!card->dev)
3122                                 return -ENODEV;
3123                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3124
3125                         /*IPv6 address autoconfiguration stuff*/
3126                         qeth_l3_get_unique_id(card);
3127                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3128                                 card->dev->dev_id = card->info.unique_id &
3129                                                          0xffff;
3130                         if (!card->info.guestlan) {
3131                                 card->dev->hw_features = NETIF_F_SG |
3132                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3133                                         NETIF_F_TSO;
3134                                 card->dev->vlan_features = NETIF_F_SG |
3135                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3136                                         NETIF_F_TSO;
3137                                 card->dev->features |= NETIF_F_SG;
3138                         }
3139                 }
3140         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3141                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
3142                                          ether_setup);
3143                 if (!card->dev)
3144                         return -ENODEV;
3145                 card->dev->flags |= IFF_NOARP;
3146                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3147                 rc = qeth_l3_iqd_read_initial_mac(card);
3148                 if (rc)
3149                         return rc;
3150                 if (card->options.hsuid[0])
3151                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3152         } else
3153                 return -ENODEV;
3154
3155         card->dev->ml_priv = card;
3156         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3157         card->dev->mtu = card->info.initial_mtu;
3158         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
3159         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
3160                                 NETIF_F_HW_VLAN_CTAG_RX |
3161                                 NETIF_F_HW_VLAN_CTAG_FILTER;
3162         netif_keep_dst(card->dev);
3163         netif_set_gso_max_size(card->dev, (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
3164                                           PAGE_SIZE);
3165
3166         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3167         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3168         netif_carrier_off(card->dev);
3169         return register_netdev(card->dev);
3170 }
3171
3172 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3173 {
3174         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3175         int rc;
3176
3177         rc = qeth_l3_create_device_attributes(&gdev->dev);
3178         if (rc)
3179                 return rc;
3180         hash_init(card->ip_htable);
3181         hash_init(card->ip_mc_htable);
3182         card->options.layer2 = 0;
3183         card->info.hwtrap = 0;
3184         return 0;
3185 }
3186
3187 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3188 {
3189         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3190
3191         qeth_l3_remove_device_attributes(&cgdev->dev);
3192
3193         qeth_set_allowed_threads(card, 0, 1);
3194         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3195
3196         if (cgdev->state == CCWGROUP_ONLINE)
3197                 qeth_l3_set_offline(cgdev);
3198
3199         if (card->dev) {
3200                 unregister_netdev(card->dev);
3201                 free_netdev(card->dev);
3202                 card->dev = NULL;
3203         }
3204
3205         qeth_l3_clear_ip_htable(card, 0);
3206         qeth_l3_clear_ipato_list(card);
3207         return;
3208 }
3209
3210 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3211 {
3212         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3213         int rc = 0;
3214         enum qeth_card_states recover_flag;
3215
3216         mutex_lock(&card->discipline_mutex);
3217         mutex_lock(&card->conf_mutex);
3218         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3219         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3220
3221         recover_flag = card->state;
3222         rc = qeth_core_hardsetup_card(card);
3223         if (rc) {
3224                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3225                 rc = -ENODEV;
3226                 goto out_remove;
3227         }
3228
3229         if (!card->dev && qeth_l3_setup_netdev(card)) {
3230                 rc = -ENODEV;
3231                 goto out_remove;
3232         }
3233
3234         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3235                 if (card->info.hwtrap &&
3236                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3237                         card->info.hwtrap = 0;
3238         } else
3239                 card->info.hwtrap = 0;
3240
3241         card->state = CARD_STATE_HARDSETUP;
3242         memset(&card->rx, 0, sizeof(struct qeth_rx));
3243         qeth_print_status_message(card);
3244
3245         /* softsetup */
3246         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3247
3248         rc = qeth_l3_setadapter_parms(card);
3249         if (rc)
3250                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3251         if (!card->options.sniffer) {
3252                 rc = qeth_l3_start_ipassists(card);
3253                 if (rc) {
3254                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3255                         goto out_remove;
3256                 }
3257                 rc = qeth_l3_setrouting_v4(card);
3258                 if (rc)
3259                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3260                 rc = qeth_l3_setrouting_v6(card);
3261                 if (rc)
3262                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3263         }
3264         netif_tx_disable(card->dev);
3265
3266         rc = qeth_init_qdio_queues(card);
3267         if (rc) {
3268                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3269                 rc = -ENODEV;
3270                 goto out_remove;
3271         }
3272         card->state = CARD_STATE_SOFTSETUP;
3273
3274         qeth_set_allowed_threads(card, 0xffffffff, 0);
3275         qeth_l3_recover_ip(card);
3276         if (card->lan_online)
3277                 netif_carrier_on(card->dev);
3278         else
3279                 netif_carrier_off(card->dev);
3280         if (recover_flag == CARD_STATE_RECOVER) {
3281                 rtnl_lock();
3282                 if (recovery_mode)
3283                         __qeth_l3_open(card->dev);
3284                 else
3285                         dev_open(card->dev);
3286                 qeth_l3_set_multicast_list(card->dev);
3287                 qeth_recover_features(card->dev);
3288                 rtnl_unlock();
3289         }
3290         qeth_trace_features(card);
3291         /* let user_space know that device is online */
3292         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3293         mutex_unlock(&card->conf_mutex);
3294         mutex_unlock(&card->discipline_mutex);
3295         return 0;
3296 out_remove:
3297         qeth_l3_stop_card(card, 0);
3298         ccw_device_set_offline(CARD_DDEV(card));
3299         ccw_device_set_offline(CARD_WDEV(card));
3300         ccw_device_set_offline(CARD_RDEV(card));
3301         qdio_free(CARD_DDEV(card));
3302         if (recover_flag == CARD_STATE_RECOVER)
3303                 card->state = CARD_STATE_RECOVER;
3304         else
3305                 card->state = CARD_STATE_DOWN;
3306         mutex_unlock(&card->conf_mutex);
3307         mutex_unlock(&card->discipline_mutex);
3308         return rc;
3309 }
3310
3311 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3312 {
3313         return __qeth_l3_set_online(gdev, 0);
3314 }
3315
3316 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3317                         int recovery_mode)
3318 {
3319         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3320         int rc = 0, rc2 = 0, rc3 = 0;
3321         enum qeth_card_states recover_flag;
3322
3323         mutex_lock(&card->discipline_mutex);
3324         mutex_lock(&card->conf_mutex);
3325         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3326         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3327
3328         if (card->dev && netif_carrier_ok(card->dev))
3329                 netif_carrier_off(card->dev);
3330         recover_flag = card->state;
3331         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3332                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3333                 card->info.hwtrap = 1;
3334         }
3335         qeth_l3_stop_card(card, recovery_mode);
3336         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3337                 rtnl_lock();
3338                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3339                 rtnl_unlock();
3340         }
3341         rc  = ccw_device_set_offline(CARD_DDEV(card));
3342         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3343         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3344         if (!rc)
3345                 rc = (rc2) ? rc2 : rc3;
3346         if (rc)
3347                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3348         qdio_free(CARD_DDEV(card));
3349         if (recover_flag == CARD_STATE_UP)
3350                 card->state = CARD_STATE_RECOVER;
3351         /* let user_space know that device is offline */
3352         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3353         mutex_unlock(&card->conf_mutex);
3354         mutex_unlock(&card->discipline_mutex);
3355         return 0;
3356 }
3357
3358 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3359 {
3360         return __qeth_l3_set_offline(cgdev, 0);
3361 }
3362
3363 static int qeth_l3_recover(void *ptr)
3364 {
3365         struct qeth_card *card;
3366         int rc = 0;
3367
3368         card = (struct qeth_card *) ptr;
3369         QETH_CARD_TEXT(card, 2, "recover1");
3370         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3371         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3372                 return 0;
3373         QETH_CARD_TEXT(card, 2, "recover2");
3374         dev_warn(&card->gdev->dev,
3375                 "A recovery process has been started for the device\n");
3376         qeth_set_recovery_task(card);
3377         __qeth_l3_set_offline(card->gdev, 1);
3378         rc = __qeth_l3_set_online(card->gdev, 1);
3379         if (!rc)
3380                 dev_info(&card->gdev->dev,
3381                         "Device successfully recovered!\n");
3382         else {
3383                 qeth_close_dev(card);
3384                 dev_warn(&card->gdev->dev, "The qeth device driver "
3385                                 "failed to recover an error on the device\n");
3386         }
3387         qeth_clear_recovery_task(card);
3388         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3389         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3390         return 0;
3391 }
3392
3393 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3394 {
3395         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3396         qeth_set_allowed_threads(card, 0, 1);
3397         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3398                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3399         qeth_qdio_clear_card(card, 0);
3400         qeth_clear_qdio_buffers(card);
3401         qdio_free(CARD_DDEV(card));
3402 }
3403
3404 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3405 {
3406         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3407
3408         if (card->dev)
3409                 netif_device_detach(card->dev);
3410         qeth_set_allowed_threads(card, 0, 1);
3411         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3412         if (gdev->state == CCWGROUP_OFFLINE)
3413                 return 0;
3414         if (card->state == CARD_STATE_UP) {
3415                 if (card->info.hwtrap)
3416                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3417                 __qeth_l3_set_offline(card->gdev, 1);
3418         } else
3419                 __qeth_l3_set_offline(card->gdev, 0);
3420         return 0;
3421 }
3422
3423 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3424 {
3425         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3426         int rc = 0;
3427
3428         if (gdev->state == CCWGROUP_OFFLINE)
3429                 goto out;
3430
3431         if (card->state == CARD_STATE_RECOVER) {
3432                 rc = __qeth_l3_set_online(card->gdev, 1);
3433                 if (rc) {
3434                         rtnl_lock();
3435                         dev_close(card->dev);
3436                         rtnl_unlock();
3437                 }
3438         } else
3439                 rc = __qeth_l3_set_online(card->gdev, 0);
3440 out:
3441         qeth_set_allowed_threads(card, 0xffffffff, 0);
3442         if (card->dev)
3443                 netif_device_attach(card->dev);
3444         if (rc)
3445                 dev_warn(&card->gdev->dev, "The qeth device driver "
3446                         "failed to recover an error on the device\n");
3447         return rc;
3448 }
3449
3450 /* Returns zero if the command is successfully "consumed" */
3451 static int qeth_l3_control_event(struct qeth_card *card,
3452                                         struct qeth_ipa_cmd *cmd)
3453 {
3454         return 1;
3455 }
3456
3457 struct qeth_discipline qeth_l3_discipline = {
3458         .devtype = &qeth_generic_devtype,
3459         .start_poll = qeth_qdio_start_poll,
3460         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3461         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3462         .recover = qeth_l3_recover,
3463         .setup = qeth_l3_probe_device,
3464         .remove = qeth_l3_remove_device,
3465         .set_online = qeth_l3_set_online,
3466         .set_offline = qeth_l3_set_offline,
3467         .shutdown = qeth_l3_shutdown,
3468         .freeze = qeth_l3_pm_suspend,
3469         .thaw = qeth_l3_pm_resume,
3470         .restore = qeth_l3_pm_resume,
3471         .control_event_handler = qeth_l3_control_event,
3472 };
3473 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3474
3475 static int qeth_l3_ip_event(struct notifier_block *this,
3476                             unsigned long event, void *ptr)
3477 {
3478
3479         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3480         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3481         struct qeth_ipaddr *addr;
3482         struct qeth_card *card;
3483
3484         if (dev_net(dev) != &init_net)
3485                 return NOTIFY_DONE;
3486
3487         card = qeth_l3_get_card_from_dev(dev);
3488         if (!card)
3489                 return NOTIFY_DONE;
3490         QETH_CARD_TEXT(card, 3, "ipevent");
3491
3492         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3493         if (addr) {
3494                 addr->u.a4.addr = ifa->ifa_address;
3495                 addr->u.a4.mask = ifa->ifa_mask;
3496                 addr->type = QETH_IP_TYPE_NORMAL;
3497         } else
3498                 return NOTIFY_DONE;
3499
3500         switch (event) {
3501         case NETDEV_UP:
3502                 spin_lock_bh(&card->ip_lock);
3503                 qeth_l3_add_ip(card, addr);
3504                 spin_unlock_bh(&card->ip_lock);
3505                 break;
3506         case NETDEV_DOWN:
3507                 spin_lock_bh(&card->ip_lock);
3508                 qeth_l3_delete_ip(card, addr);
3509                 spin_unlock_bh(&card->ip_lock);
3510                 break;
3511         }
3512
3513         kfree(addr);
3514         return NOTIFY_DONE;
3515 }
3516
3517 static struct notifier_block qeth_l3_ip_notifier = {
3518         qeth_l3_ip_event,
3519         NULL,
3520 };
3521
3522 #ifdef CONFIG_QETH_IPV6
3523 /**
3524  * IPv6 event handler
3525  */
3526 static int qeth_l3_ip6_event(struct notifier_block *this,
3527                              unsigned long event, void *ptr)
3528 {
3529         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3530         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3531         struct qeth_ipaddr *addr;
3532         struct qeth_card *card;
3533
3534         card = qeth_l3_get_card_from_dev(dev);
3535         if (!card)
3536                 return NOTIFY_DONE;
3537         QETH_CARD_TEXT(card, 3, "ip6event");
3538         if (!qeth_is_supported(card, IPA_IPV6))
3539                 return NOTIFY_DONE;
3540
3541         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3542         if (addr) {
3543                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3544                 addr->u.a6.pfxlen = ifa->prefix_len;
3545                 addr->type = QETH_IP_TYPE_NORMAL;
3546         } else
3547                 return NOTIFY_DONE;
3548
3549         switch (event) {
3550         case NETDEV_UP:
3551                 spin_lock_bh(&card->ip_lock);
3552                 qeth_l3_add_ip(card, addr);
3553                 spin_unlock_bh(&card->ip_lock);
3554                 break;
3555         case NETDEV_DOWN:
3556                 spin_lock_bh(&card->ip_lock);
3557                 qeth_l3_delete_ip(card, addr);
3558                 spin_unlock_bh(&card->ip_lock);
3559                 break;
3560         }
3561
3562         kfree(addr);
3563         return NOTIFY_DONE;
3564 }
3565
3566 static struct notifier_block qeth_l3_ip6_notifier = {
3567         qeth_l3_ip6_event,
3568         NULL,
3569 };
3570 #endif
3571
3572 static int qeth_l3_register_notifiers(void)
3573 {
3574         int rc;
3575
3576         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3577         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3578         if (rc)
3579                 return rc;
3580 #ifdef CONFIG_QETH_IPV6
3581         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3582         if (rc) {
3583                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3584                 return rc;
3585         }
3586 #else
3587         pr_warn("There is no IPv6 support for the layer 3 discipline\n");
3588 #endif
3589         return 0;
3590 }
3591
3592 static void qeth_l3_unregister_notifiers(void)
3593 {
3594
3595         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3596         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3597 #ifdef CONFIG_QETH_IPV6
3598         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3599 #endif /* QETH_IPV6 */
3600 }
3601
3602 static int __init qeth_l3_init(void)
3603 {
3604         int rc = 0;
3605
3606         pr_info("register layer 3 discipline\n");
3607         rc = qeth_l3_register_notifiers();
3608         return rc;
3609 }
3610
3611 static void __exit qeth_l3_exit(void)
3612 {
3613         qeth_l3_unregister_notifiers();
3614         pr_info("unregister layer 3 discipline\n");
3615 }
3616
3617 module_init(qeth_l3_init);
3618 module_exit(qeth_l3_exit);
3619 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3620 MODULE_DESCRIPTION("qeth layer 3 discipline");
3621 MODULE_LICENSE("GPL");