drivers/s390/net/qeth_l3_main.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *    Copyright IBM Corp. 2007, 2009
   4  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   5  *               Frank Pavlic <fpavlic@de.ibm.com>,
   6  *               Thomas Spatzier <tspat@de.ibm.com>,
   7  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   8  */
   9
  10 #define KMSG_COMPONENT "qeth"
  11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  12
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/bitops.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/ip.h>
  21 #include <linux/in.h>
  22 #include <linux/ipv6.h>
  23 #include <linux/inetdevice.h>
  24 #include <linux/igmp.h>
  25 #include <linux/slab.h>
  26 #include <linux/if_ether.h>
  27 #include <linux/if_vlan.h>
  28 #include <linux/skbuff.h>
  29
  30 #include <net/ip.h>
  31 #include <net/arp.h>
  32 #include <net/route.h>
  33 #include <net/ipv6.h>
  34 #include <net/ip6_route.h>
  35 #include <net/ip6_fib.h>
  36 #include <net/ip6_checksum.h>
  37 #include <net/iucv/af_iucv.h>
  38 #include <linux/hashtable.h>
  39
  40 #include "qeth_l3.h"
  41
  42
  43 static int qeth_l3_set_offline(struct ccwgroup_device *);
  44 static int qeth_l3_stop(struct net_device *);
  45 static void qeth_l3_set_rx_mode(struct net_device *dev);
  46 static int qeth_l3_register_addr_entry(struct qeth_card *,
  47                 struct qeth_ipaddr *);
  48 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  49                 struct qeth_ipaddr *);
  50
  51 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  52 {
  53         sprintf(buf, "%pI4", addr);
  54 }
  55
  56 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  57 {
  58         sprintf(buf, "%pI6", addr);
  59 }
  60
  61 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
  62                                 char *buf)
  63 {
  64         if (proto == QETH_PROT_IPV4)
  65                 qeth_l3_ipaddr4_to_string(addr, buf);
  66         else if (proto == QETH_PROT_IPV6)
  67                 qeth_l3_ipaddr6_to_string(addr, buf);
  68 }
  69
  70 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)
  71 {
  72         struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
  73
  74         if (addr)
  75                 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot);
  76         return addr;
  77 }
  78
  79 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
  80                                                    struct qeth_ipaddr *query)
  81 {
  82         u64 key = qeth_l3_ipaddr_hash(query);
  83         struct qeth_ipaddr *addr;
  84
  85         if (query->is_multicast) {
  86                 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
  87                         if (qeth_l3_addr_match_ip(addr, query))
  88                                 return addr;
  89         } else {
  90                 hash_for_each_possible(card->ip_htable,  addr, hnode, key)
  91                         if (qeth_l3_addr_match_ip(addr, query))
  92                                 return addr;
  93         }
  94         return NULL;
  95 }
  96
  97 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
  98 {
  99         int i, j;
 100         u8 octet;
 101
 102         for (i = 0; i < len; ++i) {
 103                 octet = addr[i];
 104                 for (j = 7; j >= 0; --j) {
 105                         bits[i*8 + j] = octet & 1;
 106                         octet >>= 1;
 107                 }
 108         }
 109 }
 110
 111 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 112                                              struct qeth_ipaddr *addr)
 113 {
 114         struct qeth_ipato_entry *ipatoe;
 115         u8 addr_bits[128] = {0, };
 116         u8 ipatoe_bits[128] = {0, };
 117         int rc = 0;
 118
 119         if (!card->ipato.enabled)
 120                 return false;
 121         if (addr->type != QETH_IP_TYPE_NORMAL)
 122                 return false;
 123
 124         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 125                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 126         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 127                 if (addr->proto != ipatoe->proto)
 128                         continue;
 129                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 130                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 131                                           4 : 16);
 132                 if (addr->proto == QETH_PROT_IPV4)
 133                         rc = !memcmp(addr_bits, ipatoe_bits,
 134                                      min(32, ipatoe->mask_bits));
 135                 else
 136                         rc = !memcmp(addr_bits, ipatoe_bits,
 137                                      min(128, ipatoe->mask_bits));
 138                 if (rc)
 139                         break;
 140         }
 141         /* invert? */
 142         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 143                 rc = !rc;
 144         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 145                 rc = !rc;
 146
 147         return rc;
 148 }
 149
 150 static int qeth_l3_delete_ip(struct qeth_card *card,
 151                              struct qeth_ipaddr *tmp_addr)
 152 {
 153         int rc = 0;
 154         struct qeth_ipaddr *addr;
 155
 156         if (tmp_addr->type == QETH_IP_TYPE_RXIP)
 157                 QETH_CARD_TEXT(card, 2, "delrxip");
 158         else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
 159                 QETH_CARD_TEXT(card, 2, "delvipa");
 160         else
 161                 QETH_CARD_TEXT(card, 2, "delip");
 162
 163         if (tmp_addr->proto == QETH_PROT_IPV4)
 164                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 165         else {
 166                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 167                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 168         }
 169
 170         addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
 171         if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
 172                 return -ENOENT;
 173
 174         addr->ref_counter--;
 175         if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
 176                 return rc;
 177         if (addr->in_progress)
 178                 return -EINPROGRESS;
 179
 180         if (qeth_card_hw_is_reachable(card))
 181                 rc = qeth_l3_deregister_addr_entry(card, addr);
 182
 183         hash_del(&addr->hnode);
 184         kfree(addr);
 185
 186         return rc;
 187 }
 188
 189 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 190 {
 191         int rc = 0;
 192         struct qeth_ipaddr *addr;
 193         char buf[40];
 194
 195         if (tmp_addr->type == QETH_IP_TYPE_RXIP)
 196                 QETH_CARD_TEXT(card, 2, "addrxip");
 197         else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
 198                 QETH_CARD_TEXT(card, 2, "addvipa");
 199         else
 200                 QETH_CARD_TEXT(card, 2, "addip");
 201
 202         if (tmp_addr->proto == QETH_PROT_IPV4)
 203                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 204         else {
 205                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 206                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 207         }
 208
 209         addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
 210         if (addr) {
 211                 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
 212                         return -EADDRINUSE;
 213                 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
 214                         addr->ref_counter++;
 215                         return 0;
 216                 }
 217                 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
 218                                          buf);
 219                 dev_warn(&card->gdev->dev,
 220                          "Registering IP address %s failed\n", buf);
 221                 return -EADDRINUSE;
 222         } else {
 223                 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
 224                 if (!addr)
 225                         return -ENOMEM;
 226
 227                 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
 228                 addr->ref_counter = 1;
 229
 230                 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 231                         QETH_CARD_TEXT(card, 2, "tkovaddr");
 232                         addr->ipato = 1;
 233                 }
 234                 hash_add(card->ip_htable, &addr->hnode,
 235                                 qeth_l3_ipaddr_hash(addr));
 236
 237                 if (!qeth_card_hw_is_reachable(card)) {
 238                         addr->disp_flag = QETH_DISP_ADDR_ADD;
 239                         return 0;
 240                 }
 241
 242                 /* qeth_l3_register_addr_entry can go to sleep
 243                  * if we add a IPV4 addr. It is caused by the reason
 244                  * that SETIP ipa cmd starts ARP staff for IPV4 addr.
 245                  * Thus we should unlock spinlock, and make a protection
 246                  * using in_progress variable to indicate that there is
 247                  * an hardware operation with this IPV4 address
 248                  */
 249                 if (addr->proto == QETH_PROT_IPV4) {
 250                         addr->in_progress = 1;
 251                         spin_unlock_bh(&card->ip_lock);
 252                         rc = qeth_l3_register_addr_entry(card, addr);
 253                         spin_lock_bh(&card->ip_lock);
 254                         addr->in_progress = 0;
 255                 } else
 256                         rc = qeth_l3_register_addr_entry(card, addr);
 257
 258                 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
 259                                 (rc == IPA_RC_LAN_OFFLINE)) {
 260                         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 261                         if (addr->ref_counter < 1) {
 262                                 qeth_l3_deregister_addr_entry(card, addr);
 263                                 hash_del(&addr->hnode);
 264                                 kfree(addr);
 265                         }
 266                 } else {
 267                         hash_del(&addr->hnode);
 268                         kfree(addr);
 269                 }
 270         }
 271         return rc;
 272 }
 273
 274 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 275 {
 276         struct qeth_ipaddr *addr;
 277         struct hlist_node *tmp;
 278         int i;
 279
 280         QETH_CARD_TEXT(card, 4, "clearip");
 281
 282         spin_lock_bh(&card->ip_lock);
 283
 284         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 285                 if (!recover) {
 286                         hash_del(&addr->hnode);
 287                         kfree(addr);
 288                         continue;
 289                 }
 290                 addr->disp_flag = QETH_DISP_ADDR_ADD;
 291         }
 292
 293         spin_unlock_bh(&card->ip_lock);
 294
 295         spin_lock_bh(&card->mclock);
 296
 297         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
 298                 hash_del(&addr->hnode);
 299                 kfree(addr);
 300         }
 301
 302         spin_unlock_bh(&card->mclock);
 303
 304
 305 }
 306 static void qeth_l3_recover_ip(struct qeth_card *card)
 307 {
 308         struct qeth_ipaddr *addr;
 309         struct hlist_node *tmp;
 310         int i;
 311         int rc;
 312
 313         QETH_CARD_TEXT(card, 4, "recovrip");
 314
 315         spin_lock_bh(&card->ip_lock);
 316
 317         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 318                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
 319                         if (addr->proto == QETH_PROT_IPV4) {
 320                                 addr->in_progress = 1;
 321                                 spin_unlock_bh(&card->ip_lock);
 322                                 rc = qeth_l3_register_addr_entry(card, addr);
 323                                 spin_lock_bh(&card->ip_lock);
 324                                 addr->in_progress = 0;
 325                         } else
 326                                 rc = qeth_l3_register_addr_entry(card, addr);
 327
 328                         if (!rc) {
 329                                 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 330                                 if (addr->ref_counter < 1)
 331                                         qeth_l3_delete_ip(card, addr);
 332                         } else {
 333                                 hash_del(&addr->hnode);
 334                                 kfree(addr);
 335                         }
 336                 }
 337         }
 338
 339         spin_unlock_bh(&card->ip_lock);
 340
 341 }
 342
 343 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 344                         struct qeth_ipaddr *addr, int ipacmd)
 345 {
 346         int rc;
 347         struct qeth_cmd_buffer *iob;
 348         struct qeth_ipa_cmd *cmd;
 349
 350         QETH_CARD_TEXT(card, 4, "setdelmc");
 351
 352         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 353         if (!iob)
 354                 return -ENOMEM;
 355         cmd = __ipa_cmd(iob);
 356         ether_addr_copy(cmd->data.setdelipm.mac, addr->mac);
 357         if (addr->proto == QETH_PROT_IPV6)
 358                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 359                        sizeof(struct in6_addr));
 360         else
 361                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 362
 363         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 364
 365         return rc;
 366 }
 367
 368 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 369 {
 370         int i, j;
 371         for (i = 0; i < 16; i++) {
 372                 j = (len) - (i * 8);
 373                 if (j >= 8)
 374                         netmask[i] = 0xff;
 375                 else if (j > 0)
 376                         netmask[i] = (u8)(0xFF00 >> j);
 377                 else
 378                         netmask[i] = 0;
 379         }
 380 }
 381
 382 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
 383 {
 384         switch (addr->type) {
 385         case QETH_IP_TYPE_RXIP:
 386                 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
 387         case QETH_IP_TYPE_VIPA:
 388                 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
 389                                QETH_IPA_DELIP_VIPA_FLAG;
 390         default:
 391                 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
 392         }
 393 }
 394
 395 static int qeth_l3_send_setdelip(struct qeth_card *card,
 396                                  struct qeth_ipaddr *addr,
 397                                  enum qeth_ipa_cmds ipacmd)
 398 {
 399         struct qeth_cmd_buffer *iob;
 400         struct qeth_ipa_cmd *cmd;
 401         __u8 netmask[16];
 402         u32 flags;
 403
 404         QETH_CARD_TEXT(card, 4, "setdelip");
 405
 406         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 407         if (!iob)
 408                 return -ENOMEM;
 409         cmd = __ipa_cmd(iob);
 410
 411         flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
 412         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 413
 414         if (addr->proto == QETH_PROT_IPV6) {
 415                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 416                        sizeof(struct in6_addr));
 417                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 418                 memcpy(cmd->data.setdelip6.mask, netmask,
 419                        sizeof(struct in6_addr));
 420                 cmd->data.setdelip6.flags = flags;
 421         } else {
 422                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 423                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 424                 cmd->data.setdelip4.flags = flags;
 425         }
 426
 427         return qeth_send_ipa_cmd(card, iob, NULL, NULL);
 428 }
 429
 430 static int qeth_l3_send_setrouting(struct qeth_card *card,
 431         enum qeth_routing_types type, enum qeth_prot_versions prot)
 432 {
 433         int rc;
 434         struct qeth_ipa_cmd *cmd;
 435         struct qeth_cmd_buffer *iob;
 436
 437         QETH_CARD_TEXT(card, 4, "setroutg");
 438         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 439         if (!iob)
 440                 return -ENOMEM;
 441         cmd = __ipa_cmd(iob);
 442         cmd->data.setrtg.type = (type);
 443         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 444
 445         return rc;
 446 }
 447
 448 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 449                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 450 {
 451         if (card->info.type == QETH_CARD_TYPE_IQD) {
 452                 switch (*type) {
 453                 case NO_ROUTER:
 454                 case PRIMARY_CONNECTOR:
 455                 case SECONDARY_CONNECTOR:
 456                 case MULTICAST_ROUTER:
 457                         return 0;
 458                 default:
 459                         goto out_inval;
 460                 }
 461         } else {
 462                 switch (*type) {
 463                 case NO_ROUTER:
 464                 case PRIMARY_ROUTER:
 465                 case SECONDARY_ROUTER:
 466                         return 0;
 467                 case MULTICAST_ROUTER:
 468                         if (qeth_is_ipafunc_supported(card, prot,
 469                                                       IPA_OSA_MC_ROUTER))
 470                                 return 0;
 471                 default:
 472                         goto out_inval;
 473                 }
 474         }
 475 out_inval:
 476         *type = NO_ROUTER;
 477         return -EINVAL;
 478 }
 479
 480 int qeth_l3_setrouting_v4(struct qeth_card *card)
 481 {
 482         int rc;
 483
 484         QETH_CARD_TEXT(card, 3, "setrtg4");
 485
 486         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 487                                   QETH_PROT_IPV4);
 488         if (rc)
 489                 return rc;
 490
 491         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 492                                   QETH_PROT_IPV4);
 493         if (rc) {
 494                 card->options.route4.type = NO_ROUTER;
 495                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 496                         " on %s. Type set to 'no router'.\n", rc,
 497                         QETH_CARD_IFNAME(card));
 498         }
 499         return rc;
 500 }
 501
 502 int qeth_l3_setrouting_v6(struct qeth_card *card)
 503 {
 504         int rc = 0;
 505
 506         QETH_CARD_TEXT(card, 3, "setrtg6");
 507
 508         if (!qeth_is_supported(card, IPA_IPV6))
 509                 return 0;
 510         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 511                                   QETH_PROT_IPV6);
 512         if (rc)
 513                 return rc;
 514
 515         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 516                                   QETH_PROT_IPV6);
 517         if (rc) {
 518                 card->options.route6.type = NO_ROUTER;
 519                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 520                         " on %s. Type set to 'no router'.\n", rc,
 521                         QETH_CARD_IFNAME(card));
 522         }
 523         return rc;
 524 }
 525
 526 /*
 527  * IP address takeover related functions
 528  */
 529
 530 /**
 531  * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
 532  *
 533  * Caller must hold ip_lock.
 534  */
 535 void qeth_l3_update_ipato(struct qeth_card *card)
 536 {
 537         struct qeth_ipaddr *addr;
 538         unsigned int i;
 539
 540         hash_for_each(card->ip_htable, i, addr, hnode) {
 541                 if (addr->type != QETH_IP_TYPE_NORMAL)
 542                         continue;
 543                 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
 544         }
 545 }
 546
 547 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 548 {
 549         struct qeth_ipato_entry *ipatoe, *tmp;
 550
 551         spin_lock_bh(&card->ip_lock);
 552
 553         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 554                 list_del(&ipatoe->entry);
 555                 kfree(ipatoe);
 556         }
 557
 558         qeth_l3_update_ipato(card);
 559         spin_unlock_bh(&card->ip_lock);
 560 }
 561
 562 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 563                                 struct qeth_ipato_entry *new)
 564 {
 565         struct qeth_ipato_entry *ipatoe;
 566         int rc = 0;
 567
 568         QETH_CARD_TEXT(card, 2, "addipato");
 569
 570         spin_lock_bh(&card->ip_lock);
 571
 572         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 573                 if (ipatoe->proto != new->proto)
 574                         continue;
 575                 if (!memcmp(ipatoe->addr, new->addr,
 576                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 577                     (ipatoe->mask_bits == new->mask_bits)) {
 578                         rc = -EEXIST;
 579                         break;
 580                 }
 581         }
 582
 583         if (!rc) {
 584                 list_add_tail(&new->entry, &card->ipato.entries);
 585                 qeth_l3_update_ipato(card);
 586         }
 587
 588         spin_unlock_bh(&card->ip_lock);
 589
 590         return rc;
 591 }
 592
 593 int qeth_l3_del_ipato_entry(struct qeth_card *card,
 594                             enum qeth_prot_versions proto, u8 *addr,
 595                             int mask_bits)
 596 {
 597         struct qeth_ipato_entry *ipatoe, *tmp;
 598         int rc = -ENOENT;
 599
 600         QETH_CARD_TEXT(card, 2, "delipato");
 601
 602         spin_lock_bh(&card->ip_lock);
 603
 604         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 605                 if (ipatoe->proto != proto)
 606                         continue;
 607                 if (!memcmp(ipatoe->addr, addr,
 608                             (proto == QETH_PROT_IPV4)? 4:16) &&
 609                     (ipatoe->mask_bits == mask_bits)) {
 610                         list_del(&ipatoe->entry);
 611                         qeth_l3_update_ipato(card);
 612                         kfree(ipatoe);
 613                         rc = 0;
 614                 }
 615         }
 616
 617         spin_unlock_bh(&card->ip_lock);
 618         return rc;
 619 }
 620
 621 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
 622                              enum qeth_ip_types type,
 623                              enum qeth_prot_versions proto)
 624 {
 625         struct qeth_ipaddr addr;
 626         int rc;
 627
 628         qeth_l3_init_ipaddr(&addr, type, proto);
 629         if (proto == QETH_PROT_IPV4)
 630                 memcpy(&addr.u.a4.addr, ip, 4);
 631         else
 632                 memcpy(&addr.u.a6.addr, ip, 16);
 633
 634         spin_lock_bh(&card->ip_lock);
 635         rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
 636         spin_unlock_bh(&card->ip_lock);
 637         return rc;
 638 }
 639
 640 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
 641 {
 642         struct qeth_ipaddr addr;
 643         int rc, i;
 644
 645         qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
 646         addr.u.a6.addr.s6_addr[0] = 0xfe;
 647         addr.u.a6.addr.s6_addr[1] = 0x80;
 648         for (i = 0; i < 8; i++)
 649                 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
 650
 651         spin_lock_bh(&card->ip_lock);
 652         rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr);
 653         spin_unlock_bh(&card->ip_lock);
 654         return rc;
 655 }
 656
 657 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 658                                 struct qeth_ipaddr *addr)
 659 {
 660         char buf[50];
 661         int rc = 0;
 662         int cnt = 3;
 663
 664         if (card->options.sniffer)
 665                 return 0;
 666
 667         if (addr->proto == QETH_PROT_IPV4) {
 668                 QETH_CARD_TEXT(card, 2, "setaddr4");
 669                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 670         } else if (addr->proto == QETH_PROT_IPV6) {
 671                 QETH_CARD_TEXT(card, 2, "setaddr6");
 672                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 673                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 674         } else {
 675                 QETH_CARD_TEXT(card, 2, "setaddr?");
 676                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 677         }
 678         do {
 679                 if (addr->is_multicast)
 680                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 681                 else
 682                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
 683                 if (rc)
 684                         QETH_CARD_TEXT(card, 2, "failed");
 685         } while ((--cnt > 0) && rc);
 686         if (rc) {
 687                 QETH_CARD_TEXT(card, 2, "FAILED");
 688                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 689                 dev_warn(&card->gdev->dev,
 690                         "Registering IP address %s failed\n", buf);
 691         }
 692         return rc;
 693 }
 694
 695 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 696                                                 struct qeth_ipaddr *addr)
 697 {
 698         int rc = 0;
 699
 700         if (card->options.sniffer)
 701                 return 0;
 702
 703         if (addr->proto == QETH_PROT_IPV4) {
 704                 QETH_CARD_TEXT(card, 2, "deladdr4");
 705                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 706         } else if (addr->proto == QETH_PROT_IPV6) {
 707                 QETH_CARD_TEXT(card, 2, "deladdr6");
 708                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 709                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 710         } else {
 711                 QETH_CARD_TEXT(card, 2, "deladdr?");
 712                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 713         }
 714         if (addr->is_multicast)
 715                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 716         else
 717                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
 718         if (rc)
 719                 QETH_CARD_TEXT(card, 2, "failed");
 720
 721         return rc;
 722 }
 723
 724 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 725 {
 726         int rc = 0;
 727
 728         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 729
 730         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 731                 rc = qeth_setadpparms_change_macaddr(card);
 732                 if (rc)
 733                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
 734                                 " address failed\n");
 735         }
 736
 737         return rc;
 738 }
 739
 740 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
 741 {
 742         int rc;
 743
 744         QETH_CARD_TEXT(card, 3, "ipaarp");
 745
 746         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 747                 dev_info(&card->gdev->dev,
 748                         "ARP processing not supported on %s!\n",
 749                         QETH_CARD_IFNAME(card));
 750                 return 0;
 751         }
 752         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
 753                                           IPA_CMD_ASS_START, 0);
 754         if (rc) {
 755                 dev_warn(&card->gdev->dev,
 756                         "Starting ARP processing support for %s failed\n",
 757                         QETH_CARD_IFNAME(card));
 758         }
 759         return rc;
 760 }
 761
 762 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
 763 {
 764         int rc;
 765
 766         QETH_CARD_TEXT(card, 3, "stsrcmac");
 767
 768         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
 769                 dev_info(&card->gdev->dev,
 770                         "Inbound source MAC-address not supported on %s\n",
 771                         QETH_CARD_IFNAME(card));
 772                 return -EOPNOTSUPP;
 773         }
 774
 775         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
 776                                           IPA_CMD_ASS_START, 0);
 777         if (rc)
 778                 dev_warn(&card->gdev->dev,
 779                         "Starting source MAC-address support for %s failed\n",
 780                         QETH_CARD_IFNAME(card));
 781         return rc;
 782 }
 783
 784 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
 785 {
 786         int rc = 0;
 787
 788         QETH_CARD_TEXT(card, 3, "strtvlan");
 789
 790         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
 791                 dev_info(&card->gdev->dev,
 792                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
 793                 return -EOPNOTSUPP;
 794         }
 795
 796         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
 797                                           IPA_CMD_ASS_START, 0);
 798         if (rc) {
 799                 dev_warn(&card->gdev->dev,
 800                         "Starting VLAN support for %s failed\n",
 801                         QETH_CARD_IFNAME(card));
 802         } else {
 803                 dev_info(&card->gdev->dev, "VLAN enabled\n");
 804         }
 805         return rc;
 806 }
 807
 808 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
 809 {
 810         int rc;
 811
 812         QETH_CARD_TEXT(card, 3, "stmcast");
 813
 814         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
 815                 dev_info(&card->gdev->dev,
 816                         "Multicast not supported on %s\n",
 817                         QETH_CARD_IFNAME(card));
 818                 return -EOPNOTSUPP;
 819         }
 820
 821         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
 822                                           IPA_CMD_ASS_START, 0);
 823         if (rc) {
 824                 dev_warn(&card->gdev->dev,
 825                         "Starting multicast support for %s failed\n",
 826                         QETH_CARD_IFNAME(card));
 827         } else {
 828                 dev_info(&card->gdev->dev, "Multicast enabled\n");
 829                 card->dev->flags |= IFF_MULTICAST;
 830         }
 831         return rc;
 832 }
 833
 834 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
 835 {
 836         int rc;
 837
 838         QETH_CARD_TEXT(card, 3, "softipv6");
 839
 840         if (card->info.type == QETH_CARD_TYPE_IQD)
 841                 goto out;
 842
 843         rc = qeth_send_simple_setassparms(card, IPA_IPV6,
 844                                           IPA_CMD_ASS_START, 3);
 845         if (rc) {
 846                 dev_err(&card->gdev->dev,
 847                         "Activating IPv6 support for %s failed\n",
 848                         QETH_CARD_IFNAME(card));
 849                 return rc;
 850         }
 851         rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6,
 852                                              IPA_CMD_ASS_START, 0);
 853         if (rc) {
 854                 dev_err(&card->gdev->dev,
 855                         "Activating IPv6 support for %s failed\n",
 856                          QETH_CARD_IFNAME(card));
 857                 return rc;
 858         }
 859         rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
 860                                              IPA_CMD_ASS_START, 0);
 861         if (rc) {
 862                 dev_warn(&card->gdev->dev,
 863                         "Enabling the passthrough mode for %s failed\n",
 864                         QETH_CARD_IFNAME(card));
 865                 return rc;
 866         }
 867 out:
 868         dev_info(&card->gdev->dev, "IPV6 enabled\n");
 869         return 0;
 870 }
 871
 872 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
 873 {
 874         QETH_CARD_TEXT(card, 3, "strtipv6");
 875
 876         if (!qeth_is_supported(card, IPA_IPV6)) {
 877                 dev_info(&card->gdev->dev,
 878                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
 879                 return 0;
 880         }
 881         return qeth_l3_softsetup_ipv6(card);
 882 }
 883
 884 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
 885 {
 886         int rc;
 887
 888         QETH_CARD_TEXT(card, 3, "stbrdcst");
 889         card->info.broadcast_capable = 0;
 890         if (!qeth_is_supported(card, IPA_FILTERING)) {
 891                 dev_info(&card->gdev->dev,
 892                         "Broadcast not supported on %s\n",
 893                         QETH_CARD_IFNAME(card));
 894                 rc = -EOPNOTSUPP;
 895                 goto out;
 896         }
 897         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
 898                                           IPA_CMD_ASS_START, 0);
 899         if (rc) {
 900                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
 901                         "%s failed\n", QETH_CARD_IFNAME(card));
 902                 goto out;
 903         }
 904
 905         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
 906                                           IPA_CMD_ASS_CONFIGURE, 1);
 907         if (rc) {
 908                 dev_warn(&card->gdev->dev,
 909                         "Setting up broadcast filtering for %s failed\n",
 910                         QETH_CARD_IFNAME(card));
 911                 goto out;
 912         }
 913         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
 914         dev_info(&card->gdev->dev, "Broadcast enabled\n");
 915         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
 916                                           IPA_CMD_ASS_ENABLE, 1);
 917         if (rc) {
 918                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
 919                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
 920                 goto out;
 921         }
 922         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
 923 out:
 924         if (card->info.broadcast_capable)
 925                 card->dev->flags |= IFF_BROADCAST;
 926         else
 927                 card->dev->flags &= ~IFF_BROADCAST;
 928         return rc;
 929 }
 930
 931 static int qeth_l3_start_ipassists(struct qeth_card *card)
 932 {
 933         QETH_CARD_TEXT(card, 3, "strtipas");
 934
 935         if (qeth_set_access_ctrl_online(card, 0))
 936                 return -EIO;
 937         qeth_l3_start_ipa_arp_processing(card); /* go on*/
 938         qeth_l3_start_ipa_source_mac(card);     /* go on*/
 939         qeth_l3_start_ipa_vlan(card);           /* go on*/
 940         qeth_l3_start_ipa_multicast(card);              /* go on*/
 941         qeth_l3_start_ipa_ipv6(card);           /* go on*/
 942         qeth_l3_start_ipa_broadcast(card);              /* go on*/
 943         return 0;
 944 }
 945
 946 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
 947                 struct qeth_reply *reply, unsigned long data)
 948 {
 949         struct qeth_ipa_cmd *cmd;
 950
 951         cmd = (struct qeth_ipa_cmd *) data;
 952         if (cmd->hdr.return_code == 0)
 953                 ether_addr_copy(card->dev->dev_addr,
 954                                 cmd->data.create_destroy_addr.unique_id);
 955         else
 956                 eth_random_addr(card->dev->dev_addr);
 957
 958         return 0;
 959 }
 960
 961 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
 962 {
 963         int rc = 0;
 964         struct qeth_cmd_buffer *iob;
 965         struct qeth_ipa_cmd *cmd;
 966
 967         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
 968
 969         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
 970                                      QETH_PROT_IPV6);
 971         if (!iob)
 972                 return -ENOMEM;
 973         cmd = __ipa_cmd(iob);
 974         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
 975                         card->info.unique_id;
 976
 977         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
 978                                 NULL);
 979         return rc;
 980 }
 981
 982 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
 983                 struct qeth_reply *reply, unsigned long data)
 984 {
 985         struct qeth_ipa_cmd *cmd;
 986
 987         cmd = (struct qeth_ipa_cmd *) data;
 988         if (cmd->hdr.return_code == 0)
 989                 card->info.unique_id = *((__u16 *)
 990                                 &cmd->data.create_destroy_addr.unique_id[6]);
 991         else {
 992                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
 993                                         UNIQUE_ID_NOT_BY_CARD;
 994                 dev_warn(&card->gdev->dev, "The network adapter failed to "
 995                         "generate a unique ID\n");
 996         }
 997         return 0;
 998 }
 999
1000 static int qeth_l3_get_unique_id(struct qeth_card *card)
1001 {
1002         int rc = 0;
1003         struct qeth_cmd_buffer *iob;
1004         struct qeth_ipa_cmd *cmd;
1005
1006         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1007
1008         if (!qeth_is_supported(card, IPA_IPV6)) {
1009                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1010                                         UNIQUE_ID_NOT_BY_CARD;
1011                 return 0;
1012         }
1013
1014         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1015                                      QETH_PROT_IPV6);
1016         if (!iob)
1017                 return -ENOMEM;
1018         cmd = __ipa_cmd(iob);
1019         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1020                         card->info.unique_id;
1021
1022         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1023         return rc;
1024 }
1025
1026 static int
1027 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1028                             unsigned long data)
1029 {
1030         struct qeth_ipa_cmd        *cmd;
1031         __u16 rc;
1032
1033         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1034
1035         cmd = (struct qeth_ipa_cmd *)data;
1036         rc = cmd->hdr.return_code;
1037         if (rc)
1038                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1039         switch (cmd->data.diagass.action) {
1040         case QETH_DIAGS_CMD_TRACE_QUERY:
1041                 break;
1042         case QETH_DIAGS_CMD_TRACE_DISABLE:
1043                 switch (rc) {
1044                 case 0:
1045                 case IPA_RC_INVALID_SUBCMD:
1046                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1047                         dev_info(&card->gdev->dev, "The HiperSockets network "
1048                                 "traffic analyzer is deactivated\n");
1049                         break;
1050                 default:
1051                         break;
1052                 }
1053                 break;
1054         case QETH_DIAGS_CMD_TRACE_ENABLE:
1055                 switch (rc) {
1056                 case 0:
1057                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1058                         dev_info(&card->gdev->dev, "The HiperSockets network "
1059                                 "traffic analyzer is activated\n");
1060                         break;
1061                 case IPA_RC_HARDWARE_AUTH_ERROR:
1062                         dev_warn(&card->gdev->dev, "The device is not "
1063                                 "authorized to run as a HiperSockets network "
1064                                 "traffic analyzer\n");
1065                         break;
1066                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1067                         dev_warn(&card->gdev->dev, "A HiperSockets "
1068                                 "network traffic analyzer is already "
1069                                 "active in the HiperSockets LAN\n");
1070                         break;
1071                 default:
1072                         break;
1073                 }
1074                 break;
1075         default:
1076                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1077                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1078         }
1079
1080         return 0;
1081 }
1082
1083 static int
1084 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1085 {
1086         struct qeth_cmd_buffer *iob;
1087         struct qeth_ipa_cmd    *cmd;
1088
1089         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1090
1091         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1092         if (!iob)
1093                 return -ENOMEM;
1094         cmd = __ipa_cmd(iob);
1095         cmd->data.diagass.subcmd_len = 16;
1096         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1097         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1098         cmd->data.diagass.action = diags_cmd;
1099         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1100 }
1101
1102 static void
1103 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1104 {
1105         struct ip_mc_list *im4;
1106         struct qeth_ipaddr *tmp, *ipm;
1107
1108         QETH_CARD_TEXT(card, 4, "addmc");
1109
1110         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1111         if (!tmp)
1112                 return;
1113
1114         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1115              im4 = rcu_dereference(im4->next_rcu)) {
1116                 ip_eth_mc_map(im4->multiaddr, tmp->mac);
1117                 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1118                 tmp->is_multicast = 1;
1119
1120                 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1121                 if (ipm) {
1122                         /* for mcast, by-IP match means full match */
1123                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1124                 } else {
1125                         ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1126                         if (!ipm)
1127                                 continue;
1128                         ether_addr_copy(ipm->mac, tmp->mac);
1129                         ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1130                         ipm->is_multicast = 1;
1131                         ipm->disp_flag = QETH_DISP_ADDR_ADD;
1132                         hash_add(card->ip_mc_htable,
1133                                         &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1134                 }
1135         }
1136
1137         kfree(tmp);
1138 }
1139
1140 /* called with rcu_read_lock */
1141 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1142 {
1143         struct in_device *in_dev;
1144         u16 vid;
1145
1146         QETH_CARD_TEXT(card, 4, "addmcvl");
1147
1148         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1149                 return;
1150
1151         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1152                 struct net_device *netdev;
1153
1154                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1155                                               vid);
1156                 if (netdev == NULL ||
1157                     !(netdev->flags & IFF_UP))
1158                         continue;
1159                 in_dev = __in_dev_get_rcu(netdev);
1160                 if (!in_dev)
1161                         continue;
1162                 qeth_l3_add_mc_to_hash(card, in_dev);
1163         }
1164 }
1165
1166 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1167 {
1168         struct in_device *in4_dev;
1169
1170         QETH_CARD_TEXT(card, 4, "chkmcv4");
1171
1172         rcu_read_lock();
1173         in4_dev = __in_dev_get_rcu(card->dev);
1174         if (in4_dev == NULL)
1175                 goto unlock;
1176         qeth_l3_add_mc_to_hash(card, in4_dev);
1177         qeth_l3_add_vlan_mc(card);
1178 unlock:
1179         rcu_read_unlock();
1180 }
1181
1182 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card,
1183                                     struct inet6_dev *in6_dev)
1184 {
1185         struct qeth_ipaddr *ipm;
1186         struct ifmcaddr6 *im6;
1187         struct qeth_ipaddr *tmp;
1188
1189         QETH_CARD_TEXT(card, 4, "addmc6");
1190
1191         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1192         if (!tmp)
1193                 return;
1194
1195         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1196                 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac);
1197                 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1198                        sizeof(struct in6_addr));
1199                 tmp->is_multicast = 1;
1200
1201                 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1202                 if (ipm) {
1203                         /* for mcast, by-IP match means full match */
1204                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1205                         continue;
1206                 }
1207
1208                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1209                 if (!ipm)
1210                         continue;
1211
1212                 ether_addr_copy(ipm->mac, tmp->mac);
1213                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1214                        sizeof(struct in6_addr));
1215                 ipm->is_multicast = 1;
1216                 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1217                 hash_add(card->ip_mc_htable,
1218                                 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1219
1220         }
1221         kfree(tmp);
1222 }
1223
1224 /* called with rcu_read_lock */
1225 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1226 {
1227         struct inet6_dev *in_dev;
1228         u16 vid;
1229
1230         QETH_CARD_TEXT(card, 4, "admc6vl");
1231
1232         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1233                 return;
1234
1235         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1236                 struct net_device *netdev;
1237
1238                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1239                                               vid);
1240                 if (netdev == NULL ||
1241                     !(netdev->flags & IFF_UP))
1242                         continue;
1243                 in_dev = in6_dev_get(netdev);
1244                 if (!in_dev)
1245                         continue;
1246                 read_lock_bh(&in_dev->lock);
1247                 qeth_l3_add_mc6_to_hash(card, in_dev);
1248                 read_unlock_bh(&in_dev->lock);
1249                 in6_dev_put(in_dev);
1250         }
1251 }
1252
1253 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1254 {
1255         struct inet6_dev *in6_dev;
1256
1257         QETH_CARD_TEXT(card, 4, "chkmcv6");
1258
1259         if (!qeth_is_supported(card, IPA_IPV6))
1260                 return ;
1261         in6_dev = in6_dev_get(card->dev);
1262         if (!in6_dev)
1263                 return;
1264
1265         rcu_read_lock();
1266         read_lock_bh(&in6_dev->lock);
1267         qeth_l3_add_mc6_to_hash(card, in6_dev);
1268         qeth_l3_add_vlan_mc6(card);
1269         read_unlock_bh(&in6_dev->lock);
1270         rcu_read_unlock();
1271         in6_dev_put(in6_dev);
1272 }
1273
1274 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1275                                    __be16 proto, u16 vid)
1276 {
1277         struct qeth_card *card = dev->ml_priv;
1278
1279         set_bit(vid, card->active_vlans);
1280         return 0;
1281 }
1282
1283 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1284                                     __be16 proto, u16 vid)
1285 {
1286         struct qeth_card *card = dev->ml_priv;
1287
1288         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1289
1290         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1291                 QETH_CARD_TEXT(card, 3, "kidREC");
1292                 return 0;
1293         }
1294         clear_bit(vid, card->active_vlans);
1295         qeth_l3_set_rx_mode(dev);
1296         return 0;
1297 }
1298
1299 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1300                                 struct qeth_hdr *hdr)
1301 {
1302         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1303                 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1304                                                                  ETH_P_IP;
1305                 unsigned char tg_addr[ETH_ALEN];
1306
1307                 skb_reset_network_header(skb);
1308                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1309                 case QETH_CAST_MULTICAST:
1310                         if (prot == ETH_P_IP)
1311                                 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
1312                         else
1313                                 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1314
1315                         card->stats.multicast++;
1316                         break;
1317                 case QETH_CAST_BROADCAST:
1318                         ether_addr_copy(tg_addr, card->dev->broadcast);
1319                         card->stats.multicast++;
1320                         break;
1321                 default:
1322                         if (card->options.sniffer)
1323                                 skb->pkt_type = PACKET_OTHERHOST;
1324                         ether_addr_copy(tg_addr, card->dev->dev_addr);
1325                 }
1326
1327                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1328                         card->dev->header_ops->create(skb, card->dev, prot,
1329                                 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
1330                                 skb->len);
1331                 else
1332                         card->dev->header_ops->create(skb, card->dev, prot,
1333                                 tg_addr, "FAKELL", skb->len);
1334         }
1335
1336         skb->protocol = eth_type_trans(skb, card->dev);
1337
1338         /* copy VLAN tag from hdr into skb */
1339         if (!card->options.sniffer &&
1340             (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1341                                       QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1342                 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1343                                 hdr->hdr.l3.vlan_id :
1344                                 hdr->hdr.l3.next_hop.rx.vlan_id;
1345                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
1346         }
1347
1348         qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags);
1349 }
1350
1351 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1352                                 int budget, int *done)
1353 {
1354         int work_done = 0;
1355         struct sk_buff *skb;
1356         struct qeth_hdr *hdr;
1357         unsigned int len;
1358         __u16 magic;
1359
1360         *done = 0;
1361         WARN_ON_ONCE(!budget);
1362         while (budget) {
1363                 skb = qeth_core_get_next_skb(card,
1364                         &card->qdio.in_q->bufs[card->rx.b_index],
1365                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1366                 if (!skb) {
1367                         *done = 1;
1368                         break;
1369                 }
1370                 switch (hdr->hdr.l3.id) {
1371                 case QETH_HEADER_TYPE_LAYER3:
1372                         magic = *(__u16 *)skb->data;
1373                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1374                             (magic == ETH_P_AF_IUCV)) {
1375                                 skb->protocol = cpu_to_be16(ETH_P_AF_IUCV);
1376                                 len = skb->len;
1377                                 card->dev->header_ops->create(skb, card->dev, 0,
1378                                         card->dev->dev_addr, "FAKELL", len);
1379                                 skb_reset_mac_header(skb);
1380                                 netif_receive_skb(skb);
1381                         } else {
1382                                 qeth_l3_rebuild_skb(card, skb, hdr);
1383                                 len = skb->len;
1384                                 napi_gro_receive(&card->napi, skb);
1385                         }
1386                         break;
1387                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1388                         skb->protocol = eth_type_trans(skb, skb->dev);
1389                         len = skb->len;
1390                         netif_receive_skb(skb);
1391                         break;
1392                 default:
1393                         dev_kfree_skb_any(skb);
1394                         QETH_CARD_TEXT(card, 3, "inbunkno");
1395                         QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
1396                         continue;
1397                 }
1398                 work_done++;
1399                 budget--;
1400                 card->stats.rx_packets++;
1401                 card->stats.rx_bytes += len;
1402         }
1403         return work_done;
1404 }
1405
1406 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1407 {
1408         QETH_DBF_TEXT(SETUP, 2, "stopcard");
1409         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1410
1411         qeth_set_allowed_threads(card, 0, 1);
1412         if (card->options.sniffer &&
1413             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1414                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1415         if (card->read.state == CH_STATE_UP &&
1416             card->write.state == CH_STATE_UP &&
1417             (card->state == CARD_STATE_UP)) {
1418                 if (recovery_mode)
1419                         qeth_l3_stop(card->dev);
1420                 else {
1421                         rtnl_lock();
1422                         dev_close(card->dev);
1423                         rtnl_unlock();
1424                 }
1425                 card->state = CARD_STATE_SOFTSETUP;
1426         }
1427         if (card->state == CARD_STATE_SOFTSETUP) {
1428                 qeth_l3_clear_ip_htable(card, 1);
1429                 qeth_clear_ipacmd_list(card);
1430                 card->state = CARD_STATE_HARDSETUP;
1431         }
1432         if (card->state == CARD_STATE_HARDSETUP) {
1433                 qeth_qdio_clear_card(card, 0);
1434                 qeth_clear_qdio_buffers(card);
1435                 qeth_clear_working_pool_list(card);
1436                 card->state = CARD_STATE_DOWN;
1437         }
1438         if (card->state == CARD_STATE_DOWN) {
1439                 qeth_clear_cmd_buffers(&card->read);
1440                 qeth_clear_cmd_buffers(&card->write);
1441         }
1442 }
1443
1444 /*
1445  * test for and Switch promiscuous mode (on or off)
1446  *  either for guestlan or HiperSocket Sniffer
1447  */
1448 static void
1449 qeth_l3_handle_promisc_mode(struct qeth_card *card)
1450 {
1451         struct net_device *dev = card->dev;
1452
1453         if (((dev->flags & IFF_PROMISC) &&
1454              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1455             (!(dev->flags & IFF_PROMISC) &&
1456              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1457                 return;
1458
1459         if (card->info.guestlan) {              /* Guestlan trace */
1460                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1461                         qeth_setadp_promisc_mode(card);
1462         } else if (card->options.sniffer &&     /* HiperSockets trace */
1463                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1464                 if (dev->flags & IFF_PROMISC) {
1465                         QETH_CARD_TEXT(card, 3, "+promisc");
1466                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1467                 } else {
1468                         QETH_CARD_TEXT(card, 3, "-promisc");
1469                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1470                 }
1471         }
1472 }
1473
1474 static void qeth_l3_set_rx_mode(struct net_device *dev)
1475 {
1476         struct qeth_card *card = dev->ml_priv;
1477         struct qeth_ipaddr *addr;
1478         struct hlist_node *tmp;
1479         int i, rc;
1480
1481         QETH_CARD_TEXT(card, 3, "setmulti");
1482         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
1483             (card->state != CARD_STATE_UP))
1484                 return;
1485         if (!card->options.sniffer) {
1486                 spin_lock_bh(&card->mclock);
1487
1488                 qeth_l3_add_multicast_ipv4(card);
1489                 qeth_l3_add_multicast_ipv6(card);
1490
1491                 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1492                         switch (addr->disp_flag) {
1493                         case QETH_DISP_ADDR_DELETE:
1494                                 rc = qeth_l3_deregister_addr_entry(card, addr);
1495                                 if (!rc || rc == IPA_RC_MC_ADDR_NOT_FOUND) {
1496                                         hash_del(&addr->hnode);
1497                                         kfree(addr);
1498                                 }
1499                                 break;
1500                         case QETH_DISP_ADDR_ADD:
1501                                 rc = qeth_l3_register_addr_entry(card, addr);
1502                                 if (rc && rc != IPA_RC_LAN_OFFLINE) {
1503                                         hash_del(&addr->hnode);
1504                                         kfree(addr);
1505                                         break;
1506                                 }
1507                                 addr->ref_counter = 1;
1508                                 /* fall through */
1509                         default:
1510                                 /* for next call to set_rx_mode(): */
1511                                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1512                         }
1513                 }
1514
1515                 spin_unlock_bh(&card->mclock);
1516
1517                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1518                         return;
1519         }
1520         qeth_l3_handle_promisc_mode(card);
1521 }
1522
1523 static const char *qeth_l3_arp_get_error_cause(int *rc)
1524 {
1525         switch (*rc) {
1526         case QETH_IPA_ARP_RC_FAILED:
1527                 *rc = -EIO;
1528                 return "operation failed";
1529         case QETH_IPA_ARP_RC_NOTSUPP:
1530                 *rc = -EOPNOTSUPP;
1531                 return "operation not supported";
1532         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1533                 *rc = -EINVAL;
1534                 return "argument out of range";
1535         case QETH_IPA_ARP_RC_Q_NOTSUPP:
1536                 *rc = -EOPNOTSUPP;
1537                 return "query operation not supported";
1538         case QETH_IPA_ARP_RC_Q_NO_DATA:
1539                 *rc = -ENOENT;
1540                 return "no query data available";
1541         default:
1542                 return "unknown error";
1543         }
1544 }
1545
1546 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1547 {
1548         int tmp;
1549         int rc;
1550
1551         QETH_CARD_TEXT(card, 3, "arpstnoe");
1552
1553         /*
1554          * currently GuestLAN only supports the ARP assist function
1555          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1556          * thus we say EOPNOTSUPP for this ARP function
1557          */
1558         if (card->info.guestlan)
1559                 return -EOPNOTSUPP;
1560         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1561                 return -EOPNOTSUPP;
1562         }
1563         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1564                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1565                                           no_entries);
1566         if (rc) {
1567                 tmp = rc;
1568                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
1569                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
1570                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1571         }
1572         return rc;
1573 }
1574
1575 static __u32 get_arp_entry_size(struct qeth_card *card,
1576                         struct qeth_arp_query_data *qdata,
1577                         struct qeth_arp_entrytype *type, __u8 strip_entries)
1578 {
1579         __u32 rc;
1580         __u8 is_hsi;
1581
1582         is_hsi = qdata->reply_bits == 5;
1583         if (type->ip == QETHARP_IP_ADDR_V4) {
1584                 QETH_CARD_TEXT(card, 4, "arpev4");
1585                 if (strip_entries) {
1586                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1587                                 sizeof(struct qeth_arp_qi_entry7_short);
1588                 } else {
1589                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1590                                 sizeof(struct qeth_arp_qi_entry7);
1591                 }
1592         } else if (type->ip == QETHARP_IP_ADDR_V6) {
1593                 QETH_CARD_TEXT(card, 4, "arpev6");
1594                 if (strip_entries) {
1595                         rc = is_hsi ?
1596                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1597                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1598                 } else {
1599                         rc = is_hsi ?
1600                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1601                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
1602                 }
1603         } else {
1604                 QETH_CARD_TEXT(card, 4, "arpinv");
1605                 rc = 0;
1606         }
1607
1608         return rc;
1609 }
1610
1611 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1612 {
1613         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1614                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1615 }
1616
1617 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1618                 struct qeth_reply *reply, unsigned long data)
1619 {
1620         struct qeth_ipa_cmd *cmd;
1621         struct qeth_arp_query_data *qdata;
1622         struct qeth_arp_query_info *qinfo;
1623         int i;
1624         int e;
1625         int entrybytes_done;
1626         int stripped_bytes;
1627         __u8 do_strip_entries;
1628
1629         QETH_CARD_TEXT(card, 3, "arpquecb");
1630
1631         qinfo = (struct qeth_arp_query_info *) reply->param;
1632         cmd = (struct qeth_ipa_cmd *) data;
1633         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1634         if (cmd->hdr.return_code) {
1635                 QETH_CARD_TEXT(card, 4, "arpcberr");
1636                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1637                 return 0;
1638         }
1639         if (cmd->data.setassparms.hdr.return_code) {
1640                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1641                 QETH_CARD_TEXT(card, 4, "setaperr");
1642                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1643                 return 0;
1644         }
1645         qdata = &cmd->data.setassparms.data.query_arp;
1646         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1647
1648         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1649         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1650         entrybytes_done = 0;
1651         for (e = 0; e < qdata->no_entries; ++e) {
1652                 char *cur_entry;
1653                 __u32 esize;
1654                 struct qeth_arp_entrytype *etype;
1655
1656                 cur_entry = &qdata->data + entrybytes_done;
1657                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1658                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1659                         QETH_CARD_TEXT(card, 4, "pmis");
1660                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1661                         break;
1662                 }
1663                 esize = get_arp_entry_size(card, qdata, etype,
1664                         do_strip_entries);
1665                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1666                 if (!esize)
1667                         break;
1668
1669                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1670                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
1671                         cmd->hdr.return_code = IPA_RC_ENOMEM;
1672                         goto out_error;
1673                 }
1674
1675                 memcpy(qinfo->udata + qinfo->udata_offset,
1676                         &qdata->data + entrybytes_done + stripped_bytes,
1677                         esize);
1678                 entrybytes_done += esize + stripped_bytes;
1679                 qinfo->udata_offset += esize;
1680                 ++qinfo->no_entries;
1681         }
1682         /* check if all replies received ... */
1683         if (cmd->data.setassparms.hdr.seq_no <
1684             cmd->data.setassparms.hdr.number_of_replies)
1685                 return 1;
1686         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1687         memcpy(qinfo->udata, &qinfo->no_entries, 4);
1688         /* keep STRIP_ENTRIES flag so the user program can distinguish
1689          * stripped entries from normal ones */
1690         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1691                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1692         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1693         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1694         return 0;
1695 out_error:
1696         i = 0;
1697         memcpy(qinfo->udata, &i, 4);
1698         return 0;
1699 }
1700
1701 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
1702                 struct qeth_cmd_buffer *iob, int len,
1703                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1704                         unsigned long),
1705                 void *reply_param)
1706 {
1707         QETH_CARD_TEXT(card, 4, "sendarp");
1708
1709         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
1710         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
1711                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
1712         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
1713                                       reply_cb, reply_param);
1714 }
1715
1716 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1717         enum qeth_prot_versions prot,
1718         struct qeth_arp_query_info *qinfo)
1719 {
1720         struct qeth_cmd_buffer *iob;
1721         struct qeth_ipa_cmd *cmd;
1722         int tmp;
1723         int rc;
1724
1725         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1726
1727         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1728                                        IPA_CMD_ASS_ARP_QUERY_INFO,
1729                                        sizeof(struct qeth_arp_query_data)
1730                                                 - sizeof(char),
1731                                        prot);
1732         if (!iob)
1733                 return -ENOMEM;
1734         cmd = __ipa_cmd(iob);
1735         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1736         cmd->data.setassparms.data.query_arp.reply_bits = 0;
1737         cmd->data.setassparms.data.query_arp.no_entries = 0;
1738         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
1739                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
1740                            qeth_l3_arp_query_cb, (void *)qinfo);
1741         if (rc) {
1742                 tmp = rc;
1743                 QETH_DBF_MESSAGE(2,
1744                         "Error while querying ARP cache on %s: %s "
1745                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
1746                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1747         }
1748
1749         return rc;
1750 }
1751
1752 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1753 {
1754         struct qeth_arp_query_info qinfo = {0, };
1755         int rc;
1756
1757         QETH_CARD_TEXT(card, 3, "arpquery");
1758
1759         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1760                                IPA_ARP_PROCESSING)) {
1761                 QETH_CARD_TEXT(card, 3, "arpqnsup");
1762                 rc = -EOPNOTSUPP;
1763                 goto out;
1764         }
1765         /* get size of userspace buffer and mask_bits -> 6 bytes */
1766         if (copy_from_user(&qinfo, udata, 6)) {
1767                 rc = -EFAULT;
1768                 goto out;
1769         }
1770         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1771         if (!qinfo.udata) {
1772                 rc = -ENOMEM;
1773                 goto out;
1774         }
1775         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1776         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1777         if (rc) {
1778                 if (copy_to_user(udata, qinfo.udata, 4))
1779                         rc = -EFAULT;
1780                 goto free_and_out;
1781         }
1782         if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1783                 /* fails in case of GuestLAN QDIO mode */
1784                 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1785         }
1786         if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1787                 QETH_CARD_TEXT(card, 4, "qactf");
1788                 rc = -EFAULT;
1789                 goto free_and_out;
1790         }
1791         QETH_CARD_TEXT(card, 4, "qacts");
1792
1793 free_and_out:
1794         kfree(qinfo.udata);
1795 out:
1796         return rc;
1797 }
1798
1799 static int qeth_l3_arp_add_entry(struct qeth_card *card,
1800                                 struct qeth_arp_cache_entry *entry)
1801 {
1802         struct qeth_cmd_buffer *iob;
1803         char buf[16];
1804         int tmp;
1805         int rc;
1806
1807         QETH_CARD_TEXT(card, 3, "arpadent");
1808
1809         /*
1810          * currently GuestLAN only supports the ARP assist function
1811          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1812          * thus we say EOPNOTSUPP for this ARP function
1813          */
1814         if (card->info.guestlan)
1815                 return -EOPNOTSUPP;
1816         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1817                 return -EOPNOTSUPP;
1818         }
1819
1820         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1821                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
1822                                        sizeof(struct qeth_arp_cache_entry),
1823                                        QETH_PROT_IPV4);
1824         if (!iob)
1825                 return -ENOMEM;
1826         rc = qeth_send_setassparms(card, iob,
1827                                    sizeof(struct qeth_arp_cache_entry),
1828                                    (unsigned long) entry,
1829                                    qeth_setassparms_cb, NULL);
1830         if (rc) {
1831                 tmp = rc;
1832                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
1833                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
1834                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
1835                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1836         }
1837         return rc;
1838 }
1839
1840 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
1841                                 struct qeth_arp_cache_entry *entry)
1842 {
1843         struct qeth_cmd_buffer *iob;
1844         char buf[16] = {0, };
1845         int tmp;
1846         int rc;
1847
1848         QETH_CARD_TEXT(card, 3, "arprment");
1849
1850         /*
1851          * currently GuestLAN only supports the ARP assist function
1852          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1853          * thus we say EOPNOTSUPP for this ARP function
1854          */
1855         if (card->info.guestlan)
1856                 return -EOPNOTSUPP;
1857         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1858                 return -EOPNOTSUPP;
1859         }
1860         memcpy(buf, entry, 12);
1861         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1862                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
1863                                        12,
1864                                        QETH_PROT_IPV4);
1865         if (!iob)
1866                 return -ENOMEM;
1867         rc = qeth_send_setassparms(card, iob,
1868                                    12, (unsigned long)buf,
1869                                    qeth_setassparms_cb, NULL);
1870         if (rc) {
1871                 tmp = rc;
1872                 memset(buf, 0, 16);
1873                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
1874                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
1875                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
1876                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1877         }
1878         return rc;
1879 }
1880
1881 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1882 {
1883         int rc;
1884         int tmp;
1885
1886         QETH_CARD_TEXT(card, 3, "arpflush");
1887
1888         /*
1889          * currently GuestLAN only supports the ARP assist function
1890          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1891          * thus we say EOPNOTSUPP for this ARP function
1892         */
1893         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
1894                 return -EOPNOTSUPP;
1895         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1896                 return -EOPNOTSUPP;
1897         }
1898         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1899                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
1900         if (rc) {
1901                 tmp = rc;
1902                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
1903                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
1904                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
1905         }
1906         return rc;
1907 }
1908
1909 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1910 {
1911         struct qeth_card *card = dev->ml_priv;
1912         struct qeth_arp_cache_entry arp_entry;
1913         int rc = 0;
1914
1915         switch (cmd) {
1916         case SIOC_QETH_ARP_SET_NO_ENTRIES:
1917                 if (!capable(CAP_NET_ADMIN)) {
1918                         rc = -EPERM;
1919                         break;
1920                 }
1921                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1922                 break;
1923         case SIOC_QETH_ARP_QUERY_INFO:
1924                 if (!capable(CAP_NET_ADMIN)) {
1925                         rc = -EPERM;
1926                         break;
1927                 }
1928                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1929                 break;
1930         case SIOC_QETH_ARP_ADD_ENTRY:
1931                 if (!capable(CAP_NET_ADMIN)) {
1932                         rc = -EPERM;
1933                         break;
1934                 }
1935                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
1936                                    sizeof(struct qeth_arp_cache_entry)))
1937                         rc = -EFAULT;
1938                 else
1939                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
1940                 break;
1941         case SIOC_QETH_ARP_REMOVE_ENTRY:
1942                 if (!capable(CAP_NET_ADMIN)) {
1943                         rc = -EPERM;
1944                         break;
1945                 }
1946                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
1947                                    sizeof(struct qeth_arp_cache_entry)))
1948                         rc = -EFAULT;
1949                 else
1950                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
1951                 break;
1952         case SIOC_QETH_ARP_FLUSH_CACHE:
1953                 if (!capable(CAP_NET_ADMIN)) {
1954                         rc = -EPERM;
1955                         break;
1956                 }
1957                 rc = qeth_l3_arp_flush_cache(card);
1958                 break;
1959         default:
1960                 rc = -EOPNOTSUPP;
1961         }
1962         return rc;
1963 }
1964
1965 static int qeth_l3_get_cast_type(struct sk_buff *skb)
1966 {
1967         struct neighbour *n = NULL;
1968         struct dst_entry *dst;
1969
1970         rcu_read_lock();
1971         dst = skb_dst(skb);
1972         if (dst)
1973                 n = dst_neigh_lookup_skb(dst, skb);
1974         if (n) {
1975                 int cast_type = n->type;
1976
1977                 rcu_read_unlock();
1978                 neigh_release(n);
1979                 if ((cast_type == RTN_BROADCAST) ||
1980                     (cast_type == RTN_MULTICAST) ||
1981                     (cast_type == RTN_ANYCAST))
1982                         return cast_type;
1983                 return RTN_UNICAST;
1984         }
1985         rcu_read_unlock();
1986
1987         /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1988         if (be16_to_cpu(skb->protocol) == ETH_P_IPV6)
1989                 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1990                                 RTN_MULTICAST : RTN_UNICAST;
1991         else if (be16_to_cpu(skb->protocol) == ETH_P_IP)
1992                 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1993                                 RTN_MULTICAST : RTN_UNICAST;
1994
1995         /* ... and MAC address */
1996         if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, skb->dev->broadcast))
1997                 return RTN_BROADCAST;
1998         if (is_multicast_ether_addr(eth_hdr(skb)->h_dest))
1999                 return RTN_MULTICAST;
2000
2001         /* default to unicast */
2002         return RTN_UNICAST;
2003 }
2004
2005 static void qeth_l3_fill_af_iucv_hdr(struct qeth_hdr *hdr, struct sk_buff *skb,
2006                                      unsigned int data_len)
2007 {
2008         char daddr[16];
2009         struct af_iucv_trans_hdr *iucv_hdr;
2010
2011         memset(hdr, 0, sizeof(struct qeth_hdr));
2012         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2013         hdr->hdr.l3.length = data_len;
2014         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2015
2016         iucv_hdr = (struct af_iucv_trans_hdr *)(skb_mac_header(skb) + ETH_HLEN);
2017         memset(daddr, 0, sizeof(daddr));
2018         daddr[0] = 0xfe;
2019         daddr[1] = 0x80;
2020         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2021         memcpy(hdr->hdr.l3.next_hop.ipv6_addr, daddr, 16);
2022 }
2023
2024 static u8 qeth_l3_cast_type_to_flag(int cast_type)
2025 {
2026         if (cast_type == RTN_MULTICAST)
2027                 return QETH_CAST_MULTICAST;
2028         if (cast_type == RTN_ANYCAST)
2029                 return QETH_CAST_ANYCAST;
2030         if (cast_type == RTN_BROADCAST)
2031                 return QETH_CAST_BROADCAST;
2032         return QETH_CAST_UNICAST;
2033 }
2034
2035 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2036                                 struct sk_buff *skb, int ipv, int cast_type,
2037                                 unsigned int data_len)
2038 {
2039         memset(hdr, 0, sizeof(struct qeth_hdr));
2040         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2041         hdr->hdr.l3.length = data_len;
2042
2043         /*
2044          * before we're going to overwrite this location with next hop ip.
2045          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2046          */
2047         if (skb_vlan_tag_present(skb)) {
2048                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2049                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2050                 else
2051                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2052                 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2053         }
2054
2055         if (!skb_is_gso(skb) && skb->ip_summed == CHECKSUM_PARTIAL) {
2056                 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
2057                 if (card->options.performance_stats)
2058                         card->perf_stats.tx_csum++;
2059         }
2060
2061         /* OSA only: */
2062         if (!ipv) {
2063                 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU;
2064                 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest,
2065                                             skb->dev->broadcast))
2066                         hdr->hdr.l3.flags |= QETH_CAST_BROADCAST;
2067                 else
2068                         hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ?
2069                                 QETH_CAST_MULTICAST : QETH_CAST_UNICAST;
2070                 return;
2071         }
2072
2073         hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type);
2074         rcu_read_lock();
2075         if (ipv == 4) {
2076                 struct rtable *rt = skb_rtable(skb);
2077
2078                 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
2079                                 rt_nexthop(rt, ip_hdr(skb)->daddr) :
2080                                 ip_hdr(skb)->daddr;
2081         } else {
2082                 /* IPv6 */
2083                 const struct rt6_info *rt = skb_rt6_info(skb);
2084                 const struct in6_addr *next_hop;
2085
2086                 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
2087                         next_hop = &rt->rt6i_gateway;
2088                 else
2089                         next_hop = &ipv6_hdr(skb)->daddr;
2090                 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, next_hop, 16);
2091
2092                 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
2093                 if (card->info.type != QETH_CARD_TYPE_IQD)
2094                         hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
2095         }
2096         rcu_read_unlock();
2097 }
2098
2099 static void qeth_tso_fill_header(struct qeth_card *card,
2100                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2101 {
2102         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2103         struct tcphdr *tcph = tcp_hdr(skb);
2104         struct iphdr *iph = ip_hdr(skb);
2105         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2106
2107         /*fix header to TSO values ...*/
2108         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2109         /*set values which are fix for the first approach ...*/
2110         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2111         hdr->ext.imb_hdr_no  = 1;
2112         hdr->ext.hdr_type    = 1;
2113         hdr->ext.hdr_version = 1;
2114         hdr->ext.hdr_len     = 28;
2115         /*insert non-fix values */
2116         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2117         hdr->ext.dg_hdr_len = (__u16)(ip_hdrlen(skb) + tcp_hdrlen(skb));
2118         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2119                                        sizeof(struct qeth_hdr_tso));
2120         tcph->check = 0;
2121         if (be16_to_cpu(skb->protocol) == ETH_P_IPV6) {
2122                 ip6h->payload_len = 0;
2123                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2124                                                0, IPPROTO_TCP, 0);
2125         } else {
2126                 /*OSA want us to set these values ...*/
2127                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2128                                          0, IPPROTO_TCP, 0);
2129                 iph->tot_len = 0;
2130                 iph->check = 0;
2131         }
2132 }
2133
2134 /**
2135  * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2136  * @card:                          qeth card structure, to check max. elems.
2137  * @skb:                           SKB address
2138  * @extra_elems:                   extra elems needed, to check against max.
2139  *
2140  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2141  * skb data, including linear part and fragments, but excluding TCP header.
2142  * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2143  * Checks if the result plus extra_elems fits under the limit for the card.
2144  * Returns 0 if it does not.
2145  * Note: extra_elems is not included in the returned result.
2146  */
2147 static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2148                         struct sk_buff *skb, int extra_elems)
2149 {
2150         addr_t start = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2151         addr_t end = (addr_t)skb->data + skb_headlen(skb);
2152         int elements = qeth_get_elements_for_frags(skb);
2153
2154         if (start != end)
2155                 elements += qeth_get_elements_for_range(start, end);
2156
2157         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2158                 QETH_DBF_MESSAGE(2,
2159         "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2160                                 elements + extra_elems, skb->len);
2161                 return 0;
2162         }
2163         return elements;
2164 }
2165
2166 static int qeth_l3_xmit_offload(struct qeth_card *card, struct sk_buff *skb,
2167                                 struct qeth_qdio_out_q *queue, int ipv,
2168                                 int cast_type)
2169 {
2170         const unsigned int hw_hdr_len = sizeof(struct qeth_hdr);
2171         unsigned int frame_len, elements;
2172         unsigned char eth_hdr[ETH_HLEN];
2173         struct qeth_hdr *hdr = NULL;
2174         unsigned int hd_len = 0;
2175         int push_len, rc;
2176         bool is_sg;
2177
2178         /* re-use the L2 header area for the HW header: */
2179         rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
2180         if (rc)
2181                 return rc;
2182         skb_copy_from_linear_data(skb, eth_hdr, ETH_HLEN);
2183         skb_pull(skb, ETH_HLEN);
2184         frame_len = skb->len;
2185
2186         push_len = qeth_add_hw_header(card, skb, &hdr, hw_hdr_len, 0,
2187                                       &elements);
2188         if (push_len < 0)
2189                 return push_len;
2190         if (!push_len) {
2191                 /* hdr was added discontiguous from skb->data */
2192                 hd_len = hw_hdr_len;
2193         }
2194
2195         if (skb->protocol == htons(ETH_P_AF_IUCV))
2196                 qeth_l3_fill_af_iucv_hdr(hdr, skb, frame_len);
2197         else
2198                 qeth_l3_fill_header(card, hdr, skb, ipv, cast_type, frame_len);
2199
2200         is_sg = skb_is_nonlinear(skb);
2201         if (IS_IQD(card)) {
2202                 rc = qeth_do_send_packet_fast(queue, skb, hdr, 0, hd_len);
2203         } else {
2204                 /* TODO: drop skb_orphan() once TX completion is fast enough */
2205                 skb_orphan(skb);
2206                 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len,
2207                                          elements);
2208         }
2209
2210         if (!rc) {
2211                 if (card->options.performance_stats) {
2212                         card->perf_stats.buf_elements_sent += elements;
2213                         if (is_sg)
2214                                 card->perf_stats.sg_skbs_sent++;
2215                 }
2216         } else {
2217                 if (!push_len)
2218                         kmem_cache_free(qeth_core_header_cache, hdr);
2219                 if (rc == -EBUSY) {
2220                         /* roll back to ETH header */
2221                         skb_pull(skb, push_len);
2222                         skb_push(skb, ETH_HLEN);
2223                         skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN);
2224                 }
2225         }
2226         return rc;
2227 }
2228
2229 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
2230                         struct qeth_qdio_out_q *queue, int ipv, int cast_type)
2231 {
2232         int elements, len, rc;
2233         __be16 *tag;
2234         struct qeth_hdr *hdr = NULL;
2235         int hdr_elements = 0;
2236         struct sk_buff *new_skb = NULL;
2237         int tx_bytes = skb->len;
2238         unsigned int hd_len;
2239         bool use_tso, is_sg;
2240
2241         /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2242         use_tso = skb_is_gso(skb) &&
2243                   (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4);
2244
2245         /* create a clone with writeable headroom */
2246         new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso) +
2247                                             VLAN_HLEN);
2248         if (!new_skb)
2249                 return -ENOMEM;
2250
2251         if (ipv == 4) {
2252                 skb_pull(new_skb, ETH_HLEN);
2253         } else if (skb_vlan_tag_present(new_skb)) {
2254                 skb_push(new_skb, VLAN_HLEN);
2255                 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2256                 skb_copy_to_linear_data_offset(new_skb, 4,
2257                                                new_skb->data + 8, 4);
2258                 skb_copy_to_linear_data_offset(new_skb, 8,
2259                                                new_skb->data + 12, 4);
2260                 tag = (__be16 *)(new_skb->data + 12);
2261                 *tag = cpu_to_be16(ETH_P_8021Q);
2262                 *(tag + 1) = cpu_to_be16(skb_vlan_tag_get(new_skb));
2263         }
2264
2265         /* fix hardware limitation: as long as we do not have sbal
2266          * chaining we can not send long frag lists
2267          */
2268         if ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2269             (!use_tso && !qeth_get_elements_no(card, new_skb, 0, 0))) {
2270                 rc = skb_linearize(new_skb);
2271
2272                 if (card->options.performance_stats) {
2273                         if (rc)
2274                                 card->perf_stats.tx_linfail++;
2275                         else
2276                                 card->perf_stats.tx_lin++;
2277                 }
2278                 if (rc)
2279                         goto out;
2280         }
2281
2282         if (use_tso) {
2283                 hdr = skb_push(new_skb, sizeof(struct qeth_hdr_tso));
2284                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2285                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type,
2286                                     new_skb->len - sizeof(struct qeth_hdr_tso));
2287                 qeth_tso_fill_header(card, hdr, new_skb);
2288                 hdr_elements++;
2289         } else {
2290                 hdr = skb_push(new_skb, sizeof(struct qeth_hdr));
2291                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type,
2292                                     new_skb->len - sizeof(struct qeth_hdr));
2293         }
2294
2295         elements = use_tso ?
2296                    qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2297                    qeth_get_elements_no(card, new_skb, hdr_elements, 0);
2298         if (!elements) {
2299                 rc = -E2BIG;
2300                 goto out;
2301         }
2302         elements += hdr_elements;
2303
2304         if (use_tso) {
2305                 hd_len = sizeof(struct qeth_hdr_tso) +
2306                          ip_hdrlen(new_skb) + tcp_hdrlen(new_skb);
2307                 len = hd_len;
2308         } else {
2309                 hd_len = 0;
2310                 len = sizeof(struct qeth_hdr_layer3);
2311         }
2312
2313         if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len)) {
2314                 rc = -EINVAL;
2315                 goto out;
2316         }
2317
2318         is_sg = skb_is_nonlinear(new_skb);
2319         rc = qeth_do_send_packet(card, queue, new_skb, hdr, hd_len, hd_len,
2320                                  elements);
2321 out:
2322         if (!rc) {
2323                 if (new_skb != skb)
2324                         dev_kfree_skb_any(skb);
2325                 if (card->options.performance_stats) {
2326                         card->perf_stats.buf_elements_sent += elements;
2327                         if (is_sg)
2328                                 card->perf_stats.sg_skbs_sent++;
2329                         if (use_tso) {
2330                                 card->perf_stats.large_send_bytes += tx_bytes;
2331                                 card->perf_stats.large_send_cnt++;
2332                         }
2333                 }
2334         } else {
2335                 if (new_skb != skb)
2336                         dev_kfree_skb_any(new_skb);
2337         }
2338         return rc;
2339 }
2340
2341 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2342                                            struct net_device *dev)
2343 {
2344         int cast_type = qeth_l3_get_cast_type(skb);
2345         struct qeth_card *card = dev->ml_priv;
2346         int ipv = qeth_get_ip_version(skb);
2347         struct qeth_qdio_out_q *queue;
2348         int tx_bytes = skb->len;
2349         int rc;
2350
2351         if (IS_IQD(card)) {
2352                 if (card->options.sniffer)
2353                         goto tx_drop;
2354                 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
2355                     (card->options.cq == QETH_CQ_ENABLED &&
2356                      skb->protocol != htons(ETH_P_AF_IUCV)))
2357                         goto tx_drop;
2358         }
2359
2360         if (card->state != CARD_STATE_UP || !card->lan_online) {
2361                 card->stats.tx_carrier_errors++;
2362                 goto tx_drop;
2363         }
2364
2365         if (cast_type == RTN_BROADCAST && !card->info.broadcast_capable)
2366                 goto tx_drop;
2367
2368         queue = qeth_get_tx_queue(card, skb, ipv, cast_type);
2369
2370         if (card->options.performance_stats) {
2371                 card->perf_stats.outbound_cnt++;
2372                 card->perf_stats.outbound_start_time = qeth_get_micros();
2373         }
2374         netif_stop_queue(dev);
2375
2376         if (IS_IQD(card) || (!skb_is_gso(skb) && ipv == 4))
2377                 rc = qeth_l3_xmit_offload(card, skb, queue, ipv, cast_type);
2378         else
2379                 rc = qeth_l3_xmit(card, skb, queue, ipv, cast_type);
2380
2381         if (!rc) {
2382                 card->stats.tx_packets++;
2383                 card->stats.tx_bytes += tx_bytes;
2384                 if (card->options.performance_stats)
2385                         card->perf_stats.outbound_time += qeth_get_micros() -
2386                                 card->perf_stats.outbound_start_time;
2387                 netif_wake_queue(dev);
2388                 return NETDEV_TX_OK;
2389         } else if (rc == -EBUSY) {
2390                 return NETDEV_TX_BUSY;
2391         } /* else fall through */
2392
2393 tx_drop:
2394         card->stats.tx_dropped++;
2395         card->stats.tx_errors++;
2396         dev_kfree_skb_any(skb);
2397         netif_wake_queue(dev);
2398         return NETDEV_TX_OK;
2399 }
2400
2401 static int __qeth_l3_open(struct net_device *dev)
2402 {
2403         struct qeth_card *card = dev->ml_priv;
2404         int rc = 0;
2405
2406         QETH_CARD_TEXT(card, 4, "qethopen");
2407         if (card->state == CARD_STATE_UP)
2408                 return rc;
2409         if (card->state != CARD_STATE_SOFTSETUP)
2410                 return -ENODEV;
2411         card->data.state = CH_STATE_UP;
2412         card->state = CARD_STATE_UP;
2413         netif_start_queue(dev);
2414
2415         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2416                 napi_enable(&card->napi);
2417                 local_bh_disable();
2418                 napi_schedule(&card->napi);
2419                 /* kick-start the NAPI softirq: */
2420                 local_bh_enable();
2421         } else
2422                 rc = -EIO;
2423         return rc;
2424 }
2425
2426 static int qeth_l3_open(struct net_device *dev)
2427 {
2428         struct qeth_card *card = dev->ml_priv;
2429
2430         QETH_CARD_TEXT(card, 5, "qethope_");
2431         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2432                 QETH_CARD_TEXT(card, 3, "openREC");
2433                 return -ERESTARTSYS;
2434         }
2435         return __qeth_l3_open(dev);
2436 }
2437
2438 static int qeth_l3_stop(struct net_device *dev)
2439 {
2440         struct qeth_card *card = dev->ml_priv;
2441
2442         QETH_CARD_TEXT(card, 4, "qethstop");
2443         netif_tx_disable(dev);
2444         if (card->state == CARD_STATE_UP) {
2445                 card->state = CARD_STATE_SOFTSETUP;
2446                 napi_disable(&card->napi);
2447         }
2448         return 0;
2449 }
2450
2451 static const struct ethtool_ops qeth_l3_ethtool_ops = {
2452         .get_link = ethtool_op_get_link,
2453         .get_strings = qeth_core_get_strings,
2454         .get_ethtool_stats = qeth_core_get_ethtool_stats,
2455         .get_sset_count = qeth_core_get_sset_count,
2456         .get_drvinfo = qeth_core_get_drvinfo,
2457         .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
2458 };
2459
2460 /*
2461  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2462  * NOARP on the netdevice is no option because it also turns off neighbor
2463  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2464  * arp resolution but we want the hard header (packet socket will work
2465  * e.g. tcpdump)
2466  */
2467 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2468 {
2469         n->nud_state = NUD_NOARP;
2470         memcpy(n->ha, "FAKELL", 6);
2471         n->output = n->ops->connected_output;
2472         return 0;
2473 }
2474
2475 static int
2476 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2477 {
2478         if (np->tbl->family == AF_INET)
2479                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2480
2481         return 0;
2482 }
2483
2484 static const struct net_device_ops qeth_l3_netdev_ops = {
2485         .ndo_open               = qeth_l3_open,
2486         .ndo_stop               = qeth_l3_stop,
2487         .ndo_get_stats          = qeth_get_stats,
2488         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2489         .ndo_validate_addr      = eth_validate_addr,
2490         .ndo_set_rx_mode        = qeth_l3_set_rx_mode,
2491         .ndo_do_ioctl           = qeth_do_ioctl,
2492         .ndo_fix_features       = qeth_fix_features,
2493         .ndo_set_features       = qeth_set_features,
2494         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2495         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2496         .ndo_tx_timeout         = qeth_tx_timeout,
2497 };
2498
2499 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2500         .ndo_open               = qeth_l3_open,
2501         .ndo_stop               = qeth_l3_stop,
2502         .ndo_get_stats          = qeth_get_stats,
2503         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2504         .ndo_features_check     = qeth_features_check,
2505         .ndo_validate_addr      = eth_validate_addr,
2506         .ndo_set_rx_mode        = qeth_l3_set_rx_mode,
2507         .ndo_do_ioctl           = qeth_do_ioctl,
2508         .ndo_fix_features       = qeth_fix_features,
2509         .ndo_set_features       = qeth_set_features,
2510         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2511         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2512         .ndo_tx_timeout         = qeth_tx_timeout,
2513         .ndo_neigh_setup        = qeth_l3_neigh_setup,
2514 };
2515
2516 static int qeth_l3_setup_netdev(struct qeth_card *card)
2517 {
2518         int rc;
2519
2520         if (qeth_netdev_is_registered(card->dev))
2521                 return 0;
2522
2523         if (card->info.type == QETH_CARD_TYPE_OSD ||
2524             card->info.type == QETH_CARD_TYPE_OSX) {
2525                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2526                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2527                         pr_info("qeth_l3: ignoring TR device\n");
2528                         return -ENODEV;
2529                 }
2530
2531                 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2532
2533                 /*IPv6 address autoconfiguration stuff*/
2534                 qeth_l3_get_unique_id(card);
2535                 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2536                         card->dev->dev_id = card->info.unique_id & 0xffff;
2537
2538                 if (!card->info.guestlan) {
2539                         card->dev->features |= NETIF_F_SG;
2540                         card->dev->hw_features |= NETIF_F_TSO |
2541                                 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2542                         card->dev->vlan_features |= NETIF_F_TSO |
2543                                 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2544                 }
2545
2546                 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
2547                         card->dev->hw_features |= NETIF_F_IPV6_CSUM;
2548                         card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
2549                 }
2550         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2551                 card->dev->flags |= IFF_NOARP;
2552                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2553
2554                 rc = qeth_l3_iqd_read_initial_mac(card);
2555                 if (rc)
2556                         goto out;
2557
2558                 if (card->options.hsuid[0])
2559                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
2560         } else
2561                 return -ENODEV;
2562
2563         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
2564         card->dev->needed_headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
2565         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
2566                                 NETIF_F_HW_VLAN_CTAG_RX |
2567                                 NETIF_F_HW_VLAN_CTAG_FILTER;
2568
2569         netif_keep_dst(card->dev);
2570         if (card->dev->hw_features & NETIF_F_TSO)
2571                 netif_set_gso_max_size(card->dev,
2572                                        PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
2573
2574         netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2575         rc = register_netdev(card->dev);
2576 out:
2577         if (rc)
2578                 card->dev->netdev_ops = NULL;
2579         return rc;
2580 }
2581
2582 static const struct device_type qeth_l3_devtype = {
2583         .name = "qeth_layer3",
2584         .groups = qeth_l3_attr_groups,
2585 };
2586
2587 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2588 {
2589         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2590         int rc;
2591
2592         hash_init(card->ip_htable);
2593
2594         if (gdev->dev.type == &qeth_generic_devtype) {
2595                 rc = qeth_l3_create_device_attributes(&gdev->dev);
2596                 if (rc)
2597                         return rc;
2598         }
2599
2600         hash_init(card->ip_mc_htable);
2601         card->options.layer2 = 0;
2602         card->info.hwtrap = 0;
2603         return 0;
2604 }
2605
2606 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2607 {
2608         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2609
2610         if (cgdev->dev.type == &qeth_generic_devtype)
2611                 qeth_l3_remove_device_attributes(&cgdev->dev);
2612
2613         qeth_set_allowed_threads(card, 0, 1);
2614         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2615
2616         if (cgdev->state == CCWGROUP_ONLINE)
2617                 qeth_l3_set_offline(cgdev);
2618
2619         cancel_work_sync(&card->close_dev_work);
2620         if (qeth_netdev_is_registered(card->dev))
2621                 unregister_netdev(card->dev);
2622         qeth_l3_clear_ip_htable(card, 0);
2623         qeth_l3_clear_ipato_list(card);
2624 }
2625
2626 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
2627 {
2628         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2629         int rc = 0;
2630         enum qeth_card_states recover_flag;
2631
2632         mutex_lock(&card->discipline_mutex);
2633         mutex_lock(&card->conf_mutex);
2634         QETH_DBF_TEXT(SETUP, 2, "setonlin");
2635         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2636
2637         recover_flag = card->state;
2638         rc = qeth_core_hardsetup_card(card);
2639         if (rc) {
2640                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2641                 rc = -ENODEV;
2642                 goto out_remove;
2643         }
2644
2645         rc = qeth_l3_setup_netdev(card);
2646         if (rc)
2647                 goto out_remove;
2648
2649         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2650                 if (card->info.hwtrap &&
2651                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
2652                         card->info.hwtrap = 0;
2653         } else
2654                 card->info.hwtrap = 0;
2655
2656         card->state = CARD_STATE_HARDSETUP;
2657         qeth_print_status_message(card);
2658
2659         /* softsetup */
2660         QETH_DBF_TEXT(SETUP, 2, "softsetp");
2661
2662         rc = qeth_l3_setadapter_parms(card);
2663         if (rc)
2664                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
2665         if (!card->options.sniffer) {
2666                 rc = qeth_l3_start_ipassists(card);
2667                 if (rc) {
2668                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2669                         goto out_remove;
2670                 }
2671                 rc = qeth_l3_setrouting_v4(card);
2672                 if (rc)
2673                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
2674                 rc = qeth_l3_setrouting_v6(card);
2675                 if (rc)
2676                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
2677         }
2678         netif_tx_disable(card->dev);
2679
2680         rc = qeth_init_qdio_queues(card);
2681         if (rc) {
2682                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2683                 rc = -ENODEV;
2684                 goto out_remove;
2685         }
2686         card->state = CARD_STATE_SOFTSETUP;
2687
2688         qeth_set_allowed_threads(card, 0xffffffff, 0);
2689         qeth_l3_recover_ip(card);
2690         if (card->lan_online)
2691                 netif_carrier_on(card->dev);
2692         else
2693                 netif_carrier_off(card->dev);
2694
2695         qeth_enable_hw_features(card->dev);
2696         if (recover_flag == CARD_STATE_RECOVER) {
2697                 rtnl_lock();
2698                 if (recovery_mode) {
2699                         __qeth_l3_open(card->dev);
2700                         qeth_l3_set_rx_mode(card->dev);
2701                 } else {
2702                         dev_open(card->dev);
2703                 }
2704                 rtnl_unlock();
2705         }
2706         qeth_trace_features(card);
2707         /* let user_space know that device is online */
2708         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2709         mutex_unlock(&card->conf_mutex);
2710         mutex_unlock(&card->discipline_mutex);
2711         return 0;
2712 out_remove:
2713         qeth_l3_stop_card(card, 0);
2714         ccw_device_set_offline(CARD_DDEV(card));
2715         ccw_device_set_offline(CARD_WDEV(card));
2716         ccw_device_set_offline(CARD_RDEV(card));
2717         qdio_free(CARD_DDEV(card));
2718         if (recover_flag == CARD_STATE_RECOVER)
2719                 card->state = CARD_STATE_RECOVER;
2720         else
2721                 card->state = CARD_STATE_DOWN;
2722         mutex_unlock(&card->conf_mutex);
2723         mutex_unlock(&card->discipline_mutex);
2724         return rc;
2725 }
2726
2727 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2728 {
2729         return __qeth_l3_set_online(gdev, 0);
2730 }
2731
2732 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2733                         int recovery_mode)
2734 {
2735         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2736         int rc = 0, rc2 = 0, rc3 = 0;
2737         enum qeth_card_states recover_flag;
2738
2739         mutex_lock(&card->discipline_mutex);
2740         mutex_lock(&card->conf_mutex);
2741         QETH_DBF_TEXT(SETUP, 3, "setoffl");
2742         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
2743
2744         netif_carrier_off(card->dev);
2745         recover_flag = card->state;
2746         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2747                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2748                 card->info.hwtrap = 1;
2749         }
2750         qeth_l3_stop_card(card, recovery_mode);
2751         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
2752                 rtnl_lock();
2753                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2754                 rtnl_unlock();
2755         }
2756         rc  = ccw_device_set_offline(CARD_DDEV(card));
2757         rc2 = ccw_device_set_offline(CARD_WDEV(card));
2758         rc3 = ccw_device_set_offline(CARD_RDEV(card));
2759         if (!rc)
2760                 rc = (rc2) ? rc2 : rc3;
2761         if (rc)
2762                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2763         qdio_free(CARD_DDEV(card));
2764         if (recover_flag == CARD_STATE_UP)
2765                 card->state = CARD_STATE_RECOVER;
2766         /* let user_space know that device is offline */
2767         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
2768         mutex_unlock(&card->conf_mutex);
2769         mutex_unlock(&card->discipline_mutex);
2770         return 0;
2771 }
2772
2773 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2774 {
2775         return __qeth_l3_set_offline(cgdev, 0);
2776 }
2777
2778 static int qeth_l3_recover(void *ptr)
2779 {
2780         struct qeth_card *card;
2781         int rc = 0;
2782
2783         card = (struct qeth_card *) ptr;
2784         QETH_CARD_TEXT(card, 2, "recover1");
2785         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
2786         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2787                 return 0;
2788         QETH_CARD_TEXT(card, 2, "recover2");
2789         dev_warn(&card->gdev->dev,
2790                 "A recovery process has been started for the device\n");
2791         qeth_set_recovery_task(card);
2792         __qeth_l3_set_offline(card->gdev, 1);
2793         rc = __qeth_l3_set_online(card->gdev, 1);
2794         if (!rc)
2795                 dev_info(&card->gdev->dev,
2796                         "Device successfully recovered!\n");
2797         else {
2798                 qeth_close_dev(card);
2799                 dev_warn(&card->gdev->dev, "The qeth device driver "
2800                                 "failed to recover an error on the device\n");
2801         }
2802         qeth_clear_recovery_task(card);
2803         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2804         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
2805         return 0;
2806 }
2807
2808 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
2809 {
2810         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2811
2812         netif_device_detach(card->dev);
2813         qeth_set_allowed_threads(card, 0, 1);
2814         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2815         if (gdev->state == CCWGROUP_OFFLINE)
2816                 return 0;
2817         if (card->state == CARD_STATE_UP) {
2818                 if (card->info.hwtrap)
2819                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2820                 __qeth_l3_set_offline(card->gdev, 1);
2821         } else
2822                 __qeth_l3_set_offline(card->gdev, 0);
2823         return 0;
2824 }
2825
2826 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
2827 {
2828         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2829         int rc = 0;
2830
2831         if (gdev->state == CCWGROUP_OFFLINE)
2832                 goto out;
2833
2834         if (card->state == CARD_STATE_RECOVER) {
2835                 rc = __qeth_l3_set_online(card->gdev, 1);
2836                 if (rc) {
2837                         rtnl_lock();
2838                         dev_close(card->dev);
2839                         rtnl_unlock();
2840                 }
2841         } else
2842                 rc = __qeth_l3_set_online(card->gdev, 0);
2843 out:
2844         qeth_set_allowed_threads(card, 0xffffffff, 0);
2845         netif_device_attach(card->dev);
2846         if (rc)
2847                 dev_warn(&card->gdev->dev, "The qeth device driver "
2848                         "failed to recover an error on the device\n");
2849         return rc;
2850 }
2851
2852 /* Returns zero if the command is successfully "consumed" */
2853 static int qeth_l3_control_event(struct qeth_card *card,
2854                                         struct qeth_ipa_cmd *cmd)
2855 {
2856         return 1;
2857 }
2858
2859 struct qeth_discipline qeth_l3_discipline = {
2860         .devtype = &qeth_l3_devtype,
2861         .process_rx_buffer = qeth_l3_process_inbound_buffer,
2862         .recover = qeth_l3_recover,
2863         .setup = qeth_l3_probe_device,
2864         .remove = qeth_l3_remove_device,
2865         .set_online = qeth_l3_set_online,
2866         .set_offline = qeth_l3_set_offline,
2867         .freeze = qeth_l3_pm_suspend,
2868         .thaw = qeth_l3_pm_resume,
2869         .restore = qeth_l3_pm_resume,
2870         .do_ioctl = qeth_l3_do_ioctl,
2871         .control_event_handler = qeth_l3_control_event,
2872 };
2873 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2874
2875 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2876                                    struct qeth_ipaddr *addr,
2877                                    unsigned long event)
2878 {
2879         switch (event) {
2880         case NETDEV_UP:
2881                 spin_lock_bh(&card->ip_lock);
2882                 qeth_l3_add_ip(card, addr);
2883                 spin_unlock_bh(&card->ip_lock);
2884                 return NOTIFY_OK;
2885         case NETDEV_DOWN:
2886                 spin_lock_bh(&card->ip_lock);
2887                 qeth_l3_delete_ip(card, addr);
2888                 spin_unlock_bh(&card->ip_lock);
2889                 return NOTIFY_OK;
2890         default:
2891                 return NOTIFY_DONE;
2892         }
2893 }
2894
2895 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2896 {
2897         if (is_vlan_dev(dev))
2898                 dev = vlan_dev_real_dev(dev);
2899         if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2900             dev->netdev_ops == &qeth_l3_netdev_ops)
2901                 return (struct qeth_card *) dev->ml_priv;
2902         return NULL;
2903 }
2904
2905 static int qeth_l3_ip_event(struct notifier_block *this,
2906                             unsigned long event, void *ptr)
2907 {
2908
2909         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2910         struct net_device *dev = ifa->ifa_dev->dev;
2911         struct qeth_ipaddr addr;
2912         struct qeth_card *card;
2913
2914         if (dev_net(dev) != &init_net)
2915                 return NOTIFY_DONE;
2916
2917         card = qeth_l3_get_card_from_dev(dev);
2918         if (!card)
2919                 return NOTIFY_DONE;
2920         QETH_CARD_TEXT(card, 3, "ipevent");
2921
2922         qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2923         addr.u.a4.addr = be32_to_cpu(ifa->ifa_address);
2924         addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
2925
2926         return qeth_l3_handle_ip_event(card, &addr, event);
2927 }
2928
2929 static struct notifier_block qeth_l3_ip_notifier = {
2930         qeth_l3_ip_event,
2931         NULL,
2932 };
2933
2934 static int qeth_l3_ip6_event(struct notifier_block *this,
2935                              unsigned long event, void *ptr)
2936 {
2937         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2938         struct net_device *dev = ifa->idev->dev;
2939         struct qeth_ipaddr addr;
2940         struct qeth_card *card;
2941
2942         card = qeth_l3_get_card_from_dev(dev);
2943         if (!card)
2944                 return NOTIFY_DONE;
2945         QETH_CARD_TEXT(card, 3, "ip6event");
2946         if (!qeth_is_supported(card, IPA_IPV6))
2947                 return NOTIFY_DONE;
2948
2949         qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
2950         addr.u.a6.addr = ifa->addr;
2951         addr.u.a6.pfxlen = ifa->prefix_len;
2952
2953         return qeth_l3_handle_ip_event(card, &addr, event);
2954 }
2955
2956 static struct notifier_block qeth_l3_ip6_notifier = {
2957         qeth_l3_ip6_event,
2958         NULL,
2959 };
2960
2961 static int qeth_l3_register_notifiers(void)
2962 {
2963         int rc;
2964
2965         QETH_DBF_TEXT(SETUP, 5, "regnotif");
2966         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2967         if (rc)
2968                 return rc;
2969         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2970         if (rc) {
2971                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2972                 return rc;
2973         }
2974         return 0;
2975 }
2976
2977 static void qeth_l3_unregister_notifiers(void)
2978 {
2979         QETH_DBF_TEXT(SETUP, 5, "unregnot");
2980         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2981         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2982 }
2983
2984 static int __init qeth_l3_init(void)
2985 {
2986         pr_info("register layer 3 discipline\n");
2987         return qeth_l3_register_notifiers();
2988 }
2989
2990 static void __exit qeth_l3_exit(void)
2991 {
2992         qeth_l3_unregister_notifiers();
2993         pr_info("unregister layer 3 discipline\n");
2994 }
2995
2996 module_init(qeth_l3_init);
2997 module_exit(qeth_l3_exit);
2998 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2999 MODULE_DESCRIPTION("qeth layer 3 discipline");
3000 MODULE_LICENSE("GPL");