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