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/iucv/af_iucv.h>
  36 #include <linux/hashtable.h>
  37
  38 #include "qeth_l3.h"
  39
  40
  41 static int qeth_l3_set_offline(struct ccwgroup_device *);
  42 static void qeth_l3_set_rx_mode(struct net_device *dev);
  43 static int qeth_l3_register_addr_entry(struct qeth_card *,
  44                 struct qeth_ipaddr *);
  45 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  46                 struct qeth_ipaddr *);
  47
  48 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  49 {
  50         sprintf(buf, "%pI4", addr);
  51 }
  52
  53 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  54 {
  55         sprintf(buf, "%pI6", addr);
  56 }
  57
  58 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
  59                                 char *buf)
  60 {
  61         if (proto == QETH_PROT_IPV4)
  62                 qeth_l3_ipaddr4_to_string(addr, buf);
  63         else if (proto == QETH_PROT_IPV6)
  64                 qeth_l3_ipaddr6_to_string(addr, buf);
  65 }
  66
  67 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot)
  68 {
  69         struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC);
  70
  71         if (addr)
  72                 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot);
  73         return addr;
  74 }
  75
  76 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
  77                                                    struct qeth_ipaddr *query)
  78 {
  79         u64 key = qeth_l3_ipaddr_hash(query);
  80         struct qeth_ipaddr *addr;
  81
  82         if (query->is_multicast) {
  83                 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
  84                         if (qeth_l3_addr_match_ip(addr, query))
  85                                 return addr;
  86         } else {
  87                 hash_for_each_possible(card->ip_htable,  addr, hnode, key)
  88                         if (qeth_l3_addr_match_ip(addr, query))
  89                                 return addr;
  90         }
  91         return NULL;
  92 }
  93
  94 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
  95 {
  96         int i, j;
  97         u8 octet;
  98
  99         for (i = 0; i < len; ++i) {
 100                 octet = addr[i];
 101                 for (j = 7; j >= 0; --j) {
 102                         bits[i*8 + j] = octet & 1;
 103                         octet >>= 1;
 104                 }
 105         }
 106 }
 107
 108 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 109                                              struct qeth_ipaddr *addr)
 110 {
 111         struct qeth_ipato_entry *ipatoe;
 112         u8 addr_bits[128] = {0, };
 113         u8 ipatoe_bits[128] = {0, };
 114         int rc = 0;
 115
 116         if (!card->ipato.enabled)
 117                 return false;
 118         if (addr->type != QETH_IP_TYPE_NORMAL)
 119                 return false;
 120
 121         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 122                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 123         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 124                 if (addr->proto != ipatoe->proto)
 125                         continue;
 126                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 127                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 128                                           4 : 16);
 129                 if (addr->proto == QETH_PROT_IPV4)
 130                         rc = !memcmp(addr_bits, ipatoe_bits,
 131                                      min(32, ipatoe->mask_bits));
 132                 else
 133                         rc = !memcmp(addr_bits, ipatoe_bits,
 134                                      min(128, ipatoe->mask_bits));
 135                 if (rc)
 136                         break;
 137         }
 138         /* invert? */
 139         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 140                 rc = !rc;
 141         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 142                 rc = !rc;
 143
 144         return rc;
 145 }
 146
 147 static int qeth_l3_delete_ip(struct qeth_card *card,
 148                              struct qeth_ipaddr *tmp_addr)
 149 {
 150         int rc = 0;
 151         struct qeth_ipaddr *addr;
 152
 153         if (tmp_addr->type == QETH_IP_TYPE_RXIP)
 154                 QETH_CARD_TEXT(card, 2, "delrxip");
 155         else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
 156                 QETH_CARD_TEXT(card, 2, "delvipa");
 157         else
 158                 QETH_CARD_TEXT(card, 2, "delip");
 159
 160         if (tmp_addr->proto == QETH_PROT_IPV4)
 161                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 162         else {
 163                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 164                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 165         }
 166
 167         addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
 168         if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
 169                 return -ENOENT;
 170
 171         addr->ref_counter--;
 172         if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
 173                 return rc;
 174         if (addr->in_progress)
 175                 return -EINPROGRESS;
 176
 177         if (qeth_card_hw_is_reachable(card))
 178                 rc = qeth_l3_deregister_addr_entry(card, addr);
 179
 180         hash_del(&addr->hnode);
 181         kfree(addr);
 182
 183         return rc;
 184 }
 185
 186 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 187 {
 188         int rc = 0;
 189         struct qeth_ipaddr *addr;
 190         char buf[40];
 191
 192         if (tmp_addr->type == QETH_IP_TYPE_RXIP)
 193                 QETH_CARD_TEXT(card, 2, "addrxip");
 194         else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
 195                 QETH_CARD_TEXT(card, 2, "addvipa");
 196         else
 197                 QETH_CARD_TEXT(card, 2, "addip");
 198
 199         if (tmp_addr->proto == QETH_PROT_IPV4)
 200                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 201         else {
 202                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 203                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 204         }
 205
 206         addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
 207         if (addr) {
 208                 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
 209                         return -EADDRINUSE;
 210                 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
 211                         addr->ref_counter++;
 212                         return 0;
 213                 }
 214                 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
 215                                          buf);
 216                 dev_warn(&card->gdev->dev,
 217                          "Registering IP address %s failed\n", buf);
 218                 return -EADDRINUSE;
 219         } else {
 220                 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
 221                 if (!addr)
 222                         return -ENOMEM;
 223
 224                 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
 225                 addr->ref_counter = 1;
 226
 227                 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 228                         QETH_CARD_TEXT(card, 2, "tkovaddr");
 229                         addr->ipato = 1;
 230                 }
 231                 hash_add(card->ip_htable, &addr->hnode,
 232                                 qeth_l3_ipaddr_hash(addr));
 233
 234                 if (!qeth_card_hw_is_reachable(card)) {
 235                         addr->disp_flag = QETH_DISP_ADDR_ADD;
 236                         return 0;
 237                 }
 238
 239                 /* qeth_l3_register_addr_entry can go to sleep
 240                  * if we add a IPV4 addr. It is caused by the reason
 241                  * that SETIP ipa cmd starts ARP staff for IPV4 addr.
 242                  * Thus we should unlock spinlock, and make a protection
 243                  * using in_progress variable to indicate that there is
 244                  * an hardware operation with this IPV4 address
 245                  */
 246                 if (addr->proto == QETH_PROT_IPV4) {
 247                         addr->in_progress = 1;
 248                         mutex_unlock(&card->ip_lock);
 249                         rc = qeth_l3_register_addr_entry(card, addr);
 250                         mutex_lock(&card->ip_lock);
 251                         addr->in_progress = 0;
 252                 } else
 253                         rc = qeth_l3_register_addr_entry(card, addr);
 254
 255                 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
 256                         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 257                         if (addr->ref_counter < 1) {
 258                                 qeth_l3_deregister_addr_entry(card, addr);
 259                                 hash_del(&addr->hnode);
 260                                 kfree(addr);
 261                         }
 262                 } else {
 263                         hash_del(&addr->hnode);
 264                         kfree(addr);
 265                 }
 266         }
 267         return rc;
 268 }
 269
 270 static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr,
 271                              bool add)
 272 {
 273         int rc;
 274
 275         mutex_lock(&card->ip_lock);
 276         rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);
 277         mutex_unlock(&card->ip_lock);
 278
 279         return rc;
 280 }
 281
 282 static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card)
 283 {
 284         struct qeth_ipaddr *addr;
 285         struct hlist_node *tmp;
 286         int i;
 287
 288         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
 289                 hash_del(&addr->hnode);
 290                 kfree(addr);
 291         }
 292 }
 293
 294 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 295 {
 296         struct qeth_ipaddr *addr;
 297         struct hlist_node *tmp;
 298         int i;
 299
 300         QETH_CARD_TEXT(card, 4, "clearip");
 301
 302         mutex_lock(&card->ip_lock);
 303
 304         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 305                 if (!recover) {
 306                         hash_del(&addr->hnode);
 307                         kfree(addr);
 308                         continue;
 309                 }
 310                 addr->disp_flag = QETH_DISP_ADDR_ADD;
 311         }
 312
 313         mutex_unlock(&card->ip_lock);
 314 }
 315
 316 static void qeth_l3_recover_ip(struct qeth_card *card)
 317 {
 318         struct qeth_ipaddr *addr;
 319         struct hlist_node *tmp;
 320         int i;
 321         int rc;
 322
 323         QETH_CARD_TEXT(card, 4, "recovrip");
 324
 325         mutex_lock(&card->ip_lock);
 326
 327         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 328                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
 329                         if (addr->proto == QETH_PROT_IPV4) {
 330                                 addr->in_progress = 1;
 331                                 mutex_unlock(&card->ip_lock);
 332                                 rc = qeth_l3_register_addr_entry(card, addr);
 333                                 mutex_lock(&card->ip_lock);
 334                                 addr->in_progress = 0;
 335                         } else
 336                                 rc = qeth_l3_register_addr_entry(card, addr);
 337
 338                         if (!rc) {
 339                                 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 340                                 if (addr->ref_counter < 1)
 341                                         qeth_l3_delete_ip(card, addr);
 342                         } else {
 343                                 hash_del(&addr->hnode);
 344                                 kfree(addr);
 345                         }
 346                 }
 347         }
 348
 349         mutex_unlock(&card->ip_lock);
 350 }
 351
 352 static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
 353                                unsigned long data)
 354 {
 355         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
 356
 357         switch (cmd->hdr.return_code) {
 358         case IPA_RC_SUCCESS:
 359                 return 0;
 360         case IPA_RC_DUPLICATE_IP_ADDRESS:
 361                 return -EADDRINUSE;
 362         case IPA_RC_MC_ADDR_NOT_FOUND:
 363                 return -ENOENT;
 364         case IPA_RC_LAN_OFFLINE:
 365                 return -ENETDOWN;
 366         default:
 367                 return -EIO;
 368         }
 369 }
 370
 371 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 372                         struct qeth_ipaddr *addr, int ipacmd)
 373 {
 374         struct qeth_cmd_buffer *iob;
 375         struct qeth_ipa_cmd *cmd;
 376
 377         QETH_CARD_TEXT(card, 4, "setdelmc");
 378
 379         iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
 380                                  IPA_DATA_SIZEOF(setdelipm));
 381         if (!iob)
 382                 return -ENOMEM;
 383         cmd = __ipa_cmd(iob);
 384         ether_addr_copy(cmd->data.setdelipm.mac, addr->mac);
 385         if (addr->proto == QETH_PROT_IPV6)
 386                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 387                        sizeof(struct in6_addr));
 388         else
 389                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 390
 391         return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
 392 }
 393
 394 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 395 {
 396         int i, j;
 397         for (i = 0; i < 16; i++) {
 398                 j = (len) - (i * 8);
 399                 if (j >= 8)
 400                         netmask[i] = 0xff;
 401                 else if (j > 0)
 402                         netmask[i] = (u8)(0xFF00 >> j);
 403                 else
 404                         netmask[i] = 0;
 405         }
 406 }
 407
 408 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
 409 {
 410         switch (addr->type) {
 411         case QETH_IP_TYPE_RXIP:
 412                 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
 413         case QETH_IP_TYPE_VIPA:
 414                 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
 415                                QETH_IPA_DELIP_VIPA_FLAG;
 416         default:
 417                 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
 418         }
 419 }
 420
 421 static int qeth_l3_send_setdelip(struct qeth_card *card,
 422                                  struct qeth_ipaddr *addr,
 423                                  enum qeth_ipa_cmds ipacmd)
 424 {
 425         struct qeth_cmd_buffer *iob;
 426         struct qeth_ipa_cmd *cmd;
 427         __u8 netmask[16];
 428         u32 flags;
 429
 430         QETH_CARD_TEXT(card, 4, "setdelip");
 431
 432         iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
 433                                  IPA_DATA_SIZEOF(setdelip6));
 434         if (!iob)
 435                 return -ENOMEM;
 436         cmd = __ipa_cmd(iob);
 437
 438         flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
 439         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 440
 441         if (addr->proto == QETH_PROT_IPV6) {
 442                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 443                        sizeof(struct in6_addr));
 444                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 445                 memcpy(cmd->data.setdelip6.mask, netmask,
 446                        sizeof(struct in6_addr));
 447                 cmd->data.setdelip6.flags = flags;
 448         } else {
 449                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 450                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 451                 cmd->data.setdelip4.flags = flags;
 452         }
 453
 454         return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
 455 }
 456
 457 static int qeth_l3_send_setrouting(struct qeth_card *card,
 458         enum qeth_routing_types type, enum qeth_prot_versions prot)
 459 {
 460         int rc;
 461         struct qeth_ipa_cmd *cmd;
 462         struct qeth_cmd_buffer *iob;
 463
 464         QETH_CARD_TEXT(card, 4, "setroutg");
 465         iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot,
 466                                  IPA_DATA_SIZEOF(setrtg));
 467         if (!iob)
 468                 return -ENOMEM;
 469         cmd = __ipa_cmd(iob);
 470         cmd->data.setrtg.type = (type);
 471         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 472
 473         return rc;
 474 }
 475
 476 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 477                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 478 {
 479         if (IS_IQD(card)) {
 480                 switch (*type) {
 481                 case NO_ROUTER:
 482                 case PRIMARY_CONNECTOR:
 483                 case SECONDARY_CONNECTOR:
 484                 case MULTICAST_ROUTER:
 485                         return 0;
 486                 default:
 487                         goto out_inval;
 488                 }
 489         } else {
 490                 switch (*type) {
 491                 case NO_ROUTER:
 492                 case PRIMARY_ROUTER:
 493                 case SECONDARY_ROUTER:
 494                         return 0;
 495                 case MULTICAST_ROUTER:
 496                         if (qeth_is_ipafunc_supported(card, prot,
 497                                                       IPA_OSA_MC_ROUTER))
 498                                 return 0;
 499                 default:
 500                         goto out_inval;
 501                 }
 502         }
 503 out_inval:
 504         *type = NO_ROUTER;
 505         return -EINVAL;
 506 }
 507
 508 int qeth_l3_setrouting_v4(struct qeth_card *card)
 509 {
 510         int rc;
 511
 512         QETH_CARD_TEXT(card, 3, "setrtg4");
 513
 514         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 515                                   QETH_PROT_IPV4);
 516         if (rc)
 517                 return rc;
 518
 519         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 520                                   QETH_PROT_IPV4);
 521         if (rc) {
 522                 card->options.route4.type = NO_ROUTER;
 523                 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
 524                                  rc, CARD_DEVID(card));
 525         }
 526         return rc;
 527 }
 528
 529 int qeth_l3_setrouting_v6(struct qeth_card *card)
 530 {
 531         int rc = 0;
 532
 533         QETH_CARD_TEXT(card, 3, "setrtg6");
 534
 535         if (!qeth_is_supported(card, IPA_IPV6))
 536                 return 0;
 537         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 538                                   QETH_PROT_IPV6);
 539         if (rc)
 540                 return rc;
 541
 542         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 543                                   QETH_PROT_IPV6);
 544         if (rc) {
 545                 card->options.route6.type = NO_ROUTER;
 546                 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
 547                                  rc, CARD_DEVID(card));
 548         }
 549         return rc;
 550 }
 551
 552 /*
 553  * IP address takeover related functions
 554  */
 555
 556 /**
 557  * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
 558  *
 559  * Caller must hold ip_lock.
 560  */
 561 void qeth_l3_update_ipato(struct qeth_card *card)
 562 {
 563         struct qeth_ipaddr *addr;
 564         unsigned int i;
 565
 566         hash_for_each(card->ip_htable, i, addr, hnode) {
 567                 if (addr->type != QETH_IP_TYPE_NORMAL)
 568                         continue;
 569                 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
 570         }
 571 }
 572
 573 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 574 {
 575         struct qeth_ipato_entry *ipatoe, *tmp;
 576
 577         mutex_lock(&card->ip_lock);
 578
 579         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 580                 list_del(&ipatoe->entry);
 581                 kfree(ipatoe);
 582         }
 583
 584         qeth_l3_update_ipato(card);
 585         mutex_unlock(&card->ip_lock);
 586 }
 587
 588 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 589                                 struct qeth_ipato_entry *new)
 590 {
 591         struct qeth_ipato_entry *ipatoe;
 592         int rc = 0;
 593
 594         QETH_CARD_TEXT(card, 2, "addipato");
 595
 596         mutex_lock(&card->ip_lock);
 597
 598         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 599                 if (ipatoe->proto != new->proto)
 600                         continue;
 601                 if (!memcmp(ipatoe->addr, new->addr,
 602                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 603                     (ipatoe->mask_bits == new->mask_bits)) {
 604                         rc = -EEXIST;
 605                         break;
 606                 }
 607         }
 608
 609         if (!rc) {
 610                 list_add_tail(&new->entry, &card->ipato.entries);
 611                 qeth_l3_update_ipato(card);
 612         }
 613
 614         mutex_unlock(&card->ip_lock);
 615
 616         return rc;
 617 }
 618
 619 int qeth_l3_del_ipato_entry(struct qeth_card *card,
 620                             enum qeth_prot_versions proto, u8 *addr,
 621                             int mask_bits)
 622 {
 623         struct qeth_ipato_entry *ipatoe, *tmp;
 624         int rc = -ENOENT;
 625
 626         QETH_CARD_TEXT(card, 2, "delipato");
 627
 628         mutex_lock(&card->ip_lock);
 629
 630         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 631                 if (ipatoe->proto != proto)
 632                         continue;
 633                 if (!memcmp(ipatoe->addr, addr,
 634                             (proto == QETH_PROT_IPV4)? 4:16) &&
 635                     (ipatoe->mask_bits == mask_bits)) {
 636                         list_del(&ipatoe->entry);
 637                         qeth_l3_update_ipato(card);
 638                         kfree(ipatoe);
 639                         rc = 0;
 640                 }
 641         }
 642
 643         mutex_unlock(&card->ip_lock);
 644         return rc;
 645 }
 646
 647 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
 648                              enum qeth_ip_types type,
 649                              enum qeth_prot_versions proto)
 650 {
 651         struct qeth_ipaddr addr;
 652
 653         qeth_l3_init_ipaddr(&addr, type, proto);
 654         if (proto == QETH_PROT_IPV4)
 655                 memcpy(&addr.u.a4.addr, ip, 4);
 656         else
 657                 memcpy(&addr.u.a6.addr, ip, 16);
 658
 659         return qeth_l3_modify_ip(card, &addr, add);
 660 }
 661
 662 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
 663 {
 664         struct qeth_ipaddr addr;
 665         unsigned int i;
 666
 667         qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
 668         addr.u.a6.addr.s6_addr[0] = 0xfe;
 669         addr.u.a6.addr.s6_addr[1] = 0x80;
 670         for (i = 0; i < 8; i++)
 671                 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
 672
 673         return qeth_l3_modify_ip(card, &addr, add);
 674 }
 675
 676 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 677                                 struct qeth_ipaddr *addr)
 678 {
 679         char buf[50];
 680         int rc = 0;
 681         int cnt = 3;
 682
 683         if (card->options.sniffer)
 684                 return 0;
 685
 686         if (addr->proto == QETH_PROT_IPV4) {
 687                 QETH_CARD_TEXT(card, 2, "setaddr4");
 688                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 689         } else if (addr->proto == QETH_PROT_IPV6) {
 690                 QETH_CARD_TEXT(card, 2, "setaddr6");
 691                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 692                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 693         } else {
 694                 QETH_CARD_TEXT(card, 2, "setaddr?");
 695                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 696         }
 697         do {
 698                 if (addr->is_multicast)
 699                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 700                 else
 701                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
 702                 if (rc)
 703                         QETH_CARD_TEXT(card, 2, "failed");
 704         } while ((--cnt > 0) && rc);
 705         if (rc) {
 706                 QETH_CARD_TEXT(card, 2, "FAILED");
 707                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 708                 dev_warn(&card->gdev->dev,
 709                         "Registering IP address %s failed\n", buf);
 710         }
 711         return rc;
 712 }
 713
 714 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 715                                                 struct qeth_ipaddr *addr)
 716 {
 717         int rc = 0;
 718
 719         if (card->options.sniffer)
 720                 return 0;
 721
 722         if (addr->proto == QETH_PROT_IPV4) {
 723                 QETH_CARD_TEXT(card, 2, "deladdr4");
 724                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 725         } else if (addr->proto == QETH_PROT_IPV6) {
 726                 QETH_CARD_TEXT(card, 2, "deladdr6");
 727                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 728                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 729         } else {
 730                 QETH_CARD_TEXT(card, 2, "deladdr?");
 731                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 732         }
 733         if (addr->is_multicast)
 734                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 735         else
 736                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
 737         if (rc)
 738                 QETH_CARD_TEXT(card, 2, "failed");
 739
 740         return rc;
 741 }
 742
 743 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 744 {
 745         int rc = 0;
 746
 747         QETH_CARD_TEXT(card, 2, "setadprm");
 748
 749         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 750                 rc = qeth_setadpparms_change_macaddr(card);
 751                 if (rc)
 752                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
 753                                 " address failed\n");
 754         }
 755
 756         return rc;
 757 }
 758
 759 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
 760 {
 761         int rc;
 762
 763         QETH_CARD_TEXT(card, 3, "ipaarp");
 764
 765         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 766                 dev_info(&card->gdev->dev,
 767                         "ARP processing not supported on %s!\n",
 768                         QETH_CARD_IFNAME(card));
 769                 return 0;
 770         }
 771         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
 772                                           IPA_CMD_ASS_START, NULL);
 773         if (rc) {
 774                 dev_warn(&card->gdev->dev,
 775                         "Starting ARP processing support for %s failed\n",
 776                         QETH_CARD_IFNAME(card));
 777         }
 778         return rc;
 779 }
 780
 781 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
 782 {
 783         int rc;
 784
 785         QETH_CARD_TEXT(card, 3, "stsrcmac");
 786
 787         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
 788                 dev_info(&card->gdev->dev,
 789                         "Inbound source MAC-address not supported on %s\n",
 790                         QETH_CARD_IFNAME(card));
 791                 return -EOPNOTSUPP;
 792         }
 793
 794         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
 795                                           IPA_CMD_ASS_START, NULL);
 796         if (rc)
 797                 dev_warn(&card->gdev->dev,
 798                         "Starting source MAC-address support for %s failed\n",
 799                         QETH_CARD_IFNAME(card));
 800         return rc;
 801 }
 802
 803 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
 804 {
 805         int rc = 0;
 806
 807         QETH_CARD_TEXT(card, 3, "strtvlan");
 808
 809         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
 810                 dev_info(&card->gdev->dev,
 811                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
 812                 return -EOPNOTSUPP;
 813         }
 814
 815         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
 816                                           IPA_CMD_ASS_START, NULL);
 817         if (rc) {
 818                 dev_warn(&card->gdev->dev,
 819                         "Starting VLAN support for %s failed\n",
 820                         QETH_CARD_IFNAME(card));
 821         } else {
 822                 dev_info(&card->gdev->dev, "VLAN enabled\n");
 823         }
 824         return rc;
 825 }
 826
 827 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
 828 {
 829         int rc;
 830
 831         QETH_CARD_TEXT(card, 3, "stmcast");
 832
 833         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
 834                 dev_info(&card->gdev->dev,
 835                         "Multicast not supported on %s\n",
 836                         QETH_CARD_IFNAME(card));
 837                 return -EOPNOTSUPP;
 838         }
 839
 840         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
 841                                           IPA_CMD_ASS_START, NULL);
 842         if (rc) {
 843                 dev_warn(&card->gdev->dev,
 844                         "Starting multicast support for %s failed\n",
 845                         QETH_CARD_IFNAME(card));
 846         } else {
 847                 dev_info(&card->gdev->dev, "Multicast enabled\n");
 848                 card->dev->flags |= IFF_MULTICAST;
 849         }
 850         return rc;
 851 }
 852
 853 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
 854 {
 855         u32 ipv6_data = 3;
 856         int rc;
 857
 858         QETH_CARD_TEXT(card, 3, "softipv6");
 859
 860         if (IS_IQD(card))
 861                 goto out;
 862
 863         rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
 864                                           &ipv6_data);
 865         if (rc) {
 866                 dev_err(&card->gdev->dev,
 867                         "Activating IPv6 support for %s failed\n",
 868                         QETH_CARD_IFNAME(card));
 869                 return rc;
 870         }
 871         rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
 872                                              NULL);
 873         if (rc) {
 874                 dev_err(&card->gdev->dev,
 875                         "Activating IPv6 support for %s failed\n",
 876                          QETH_CARD_IFNAME(card));
 877                 return rc;
 878         }
 879         rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
 880                                              IPA_CMD_ASS_START, NULL);
 881         if (rc) {
 882                 dev_warn(&card->gdev->dev,
 883                         "Enabling the passthrough mode for %s failed\n",
 884                         QETH_CARD_IFNAME(card));
 885                 return rc;
 886         }
 887 out:
 888         dev_info(&card->gdev->dev, "IPV6 enabled\n");
 889         return 0;
 890 }
 891
 892 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
 893 {
 894         QETH_CARD_TEXT(card, 3, "strtipv6");
 895
 896         if (!qeth_is_supported(card, IPA_IPV6)) {
 897                 dev_info(&card->gdev->dev,
 898                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
 899                 return 0;
 900         }
 901         return qeth_l3_softsetup_ipv6(card);
 902 }
 903
 904 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
 905 {
 906         u32 filter_data = 1;
 907         int rc;
 908
 909         QETH_CARD_TEXT(card, 3, "stbrdcst");
 910         card->info.broadcast_capable = 0;
 911         if (!qeth_is_supported(card, IPA_FILTERING)) {
 912                 dev_info(&card->gdev->dev,
 913                         "Broadcast not supported on %s\n",
 914                         QETH_CARD_IFNAME(card));
 915                 rc = -EOPNOTSUPP;
 916                 goto out;
 917         }
 918         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
 919                                           IPA_CMD_ASS_START, NULL);
 920         if (rc) {
 921                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
 922                         "%s failed\n", QETH_CARD_IFNAME(card));
 923                 goto out;
 924         }
 925
 926         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
 927                                           IPA_CMD_ASS_CONFIGURE, &filter_data);
 928         if (rc) {
 929                 dev_warn(&card->gdev->dev,
 930                         "Setting up broadcast filtering for %s failed\n",
 931                         QETH_CARD_IFNAME(card));
 932                 goto out;
 933         }
 934         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
 935         dev_info(&card->gdev->dev, "Broadcast enabled\n");
 936         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
 937                                           IPA_CMD_ASS_ENABLE, &filter_data);
 938         if (rc) {
 939                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
 940                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
 941                 goto out;
 942         }
 943         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
 944 out:
 945         if (card->info.broadcast_capable)
 946                 card->dev->flags |= IFF_BROADCAST;
 947         else
 948                 card->dev->flags &= ~IFF_BROADCAST;
 949         return rc;
 950 }
 951
 952 static int qeth_l3_start_ipassists(struct qeth_card *card)
 953 {
 954         QETH_CARD_TEXT(card, 3, "strtipas");
 955
 956         if (qeth_set_access_ctrl_online(card, 0))
 957                 return -EIO;
 958         qeth_l3_start_ipa_arp_processing(card); /* go on*/
 959         qeth_l3_start_ipa_source_mac(card);     /* go on*/
 960         qeth_l3_start_ipa_vlan(card);           /* go on*/
 961         qeth_l3_start_ipa_multicast(card);              /* go on*/
 962         qeth_l3_start_ipa_ipv6(card);           /* go on*/
 963         qeth_l3_start_ipa_broadcast(card);              /* go on*/
 964         return 0;
 965 }
 966
 967 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
 968                 struct qeth_reply *reply, unsigned long data)
 969 {
 970         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
 971
 972         if (cmd->hdr.return_code)
 973                 return -EIO;
 974
 975         ether_addr_copy(card->dev->dev_addr,
 976                         cmd->data.create_destroy_addr.unique_id);
 977         return 0;
 978 }
 979
 980 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
 981 {
 982         int rc = 0;
 983         struct qeth_cmd_buffer *iob;
 984         struct qeth_ipa_cmd *cmd;
 985
 986         QETH_CARD_TEXT(card, 2, "hsrmac");
 987
 988         iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
 989                                  IPA_DATA_SIZEOF(create_destroy_addr));
 990         if (!iob)
 991                 return -ENOMEM;
 992         cmd = __ipa_cmd(iob);
 993         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
 994                         card->info.unique_id;
 995
 996         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
 997                                 NULL);
 998         return rc;
 999 }
1000
1001 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1002                 struct qeth_reply *reply, unsigned long data)
1003 {
1004         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1005
1006         if (cmd->hdr.return_code == 0) {
1007                 card->info.unique_id = *((__u16 *)
1008                                 &cmd->data.create_destroy_addr.unique_id[6]);
1009                 return 0;
1010         }
1011
1012         card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1013                                UNIQUE_ID_NOT_BY_CARD;
1014         dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
1015         return -EIO;
1016 }
1017
1018 static int qeth_l3_get_unique_id(struct qeth_card *card)
1019 {
1020         int rc = 0;
1021         struct qeth_cmd_buffer *iob;
1022         struct qeth_ipa_cmd *cmd;
1023
1024         QETH_CARD_TEXT(card, 2, "guniqeid");
1025
1026         if (!qeth_is_supported(card, IPA_IPV6)) {
1027                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1028                                         UNIQUE_ID_NOT_BY_CARD;
1029                 return 0;
1030         }
1031
1032         iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
1033                                  IPA_DATA_SIZEOF(create_destroy_addr));
1034         if (!iob)
1035                 return -ENOMEM;
1036         cmd = __ipa_cmd(iob);
1037         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1038                         card->info.unique_id;
1039
1040         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1041         return rc;
1042 }
1043
1044 static int
1045 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1046                             unsigned long data)
1047 {
1048         struct qeth_ipa_cmd        *cmd;
1049         __u16 rc;
1050
1051         QETH_CARD_TEXT(card, 2, "diastrcb");
1052
1053         cmd = (struct qeth_ipa_cmd *)data;
1054         rc = cmd->hdr.return_code;
1055         if (rc)
1056                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1057         switch (cmd->data.diagass.action) {
1058         case QETH_DIAGS_CMD_TRACE_QUERY:
1059                 break;
1060         case QETH_DIAGS_CMD_TRACE_DISABLE:
1061                 switch (rc) {
1062                 case 0:
1063                 case IPA_RC_INVALID_SUBCMD:
1064                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1065                         dev_info(&card->gdev->dev, "The HiperSockets network "
1066                                 "traffic analyzer is deactivated\n");
1067                         break;
1068                 default:
1069                         break;
1070                 }
1071                 break;
1072         case QETH_DIAGS_CMD_TRACE_ENABLE:
1073                 switch (rc) {
1074                 case 0:
1075                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1076                         dev_info(&card->gdev->dev, "The HiperSockets network "
1077                                 "traffic analyzer is activated\n");
1078                         break;
1079                 case IPA_RC_HARDWARE_AUTH_ERROR:
1080                         dev_warn(&card->gdev->dev, "The device is not "
1081                                 "authorized to run as a HiperSockets network "
1082                                 "traffic analyzer\n");
1083                         break;
1084                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1085                         dev_warn(&card->gdev->dev, "A HiperSockets "
1086                                 "network traffic analyzer is already "
1087                                 "active in the HiperSockets LAN\n");
1088                         break;
1089                 default:
1090                         break;
1091                 }
1092                 break;
1093         default:
1094                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1095                                  cmd->data.diagass.action, CARD_DEVID(card));
1096         }
1097
1098         return rc ? -EIO : 0;
1099 }
1100
1101 static int
1102 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1103 {
1104         struct qeth_cmd_buffer *iob;
1105         struct qeth_ipa_cmd    *cmd;
1106
1107         QETH_CARD_TEXT(card, 2, "diagtrac");
1108
1109         iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0);
1110         if (!iob)
1111                 return -ENOMEM;
1112         cmd = __ipa_cmd(iob);
1113         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1114         cmd->data.diagass.action = diags_cmd;
1115         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1116 }
1117
1118 static void
1119 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1120 {
1121         struct ip_mc_list *im4;
1122         struct qeth_ipaddr *tmp, *ipm;
1123
1124         QETH_CARD_TEXT(card, 4, "addmc");
1125
1126         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1127         if (!tmp)
1128                 return;
1129
1130         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1131              im4 = rcu_dereference(im4->next_rcu)) {
1132                 ip_eth_mc_map(im4->multiaddr, tmp->mac);
1133                 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1134                 tmp->is_multicast = 1;
1135
1136                 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1137                 if (ipm) {
1138                         /* for mcast, by-IP match means full match */
1139                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1140                 } else {
1141                         ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1142                         if (!ipm)
1143                                 continue;
1144                         ether_addr_copy(ipm->mac, tmp->mac);
1145                         ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1146                         ipm->is_multicast = 1;
1147                         ipm->disp_flag = QETH_DISP_ADDR_ADD;
1148                         hash_add(card->ip_mc_htable,
1149                                         &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1150                 }
1151         }
1152
1153         kfree(tmp);
1154 }
1155
1156 /* called with rcu_read_lock */
1157 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1158 {
1159         struct in_device *in_dev;
1160         u16 vid;
1161
1162         QETH_CARD_TEXT(card, 4, "addmcvl");
1163
1164         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1165                 return;
1166
1167         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1168                 struct net_device *netdev;
1169
1170                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1171                                               vid);
1172                 if (netdev == NULL ||
1173                     !(netdev->flags & IFF_UP))
1174                         continue;
1175                 in_dev = __in_dev_get_rcu(netdev);
1176                 if (!in_dev)
1177                         continue;
1178                 qeth_l3_add_mc_to_hash(card, in_dev);
1179         }
1180 }
1181
1182 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1183 {
1184         struct in_device *in4_dev;
1185
1186         QETH_CARD_TEXT(card, 4, "chkmcv4");
1187
1188         rcu_read_lock();
1189         in4_dev = __in_dev_get_rcu(card->dev);
1190         if (in4_dev == NULL)
1191                 goto unlock;
1192         qeth_l3_add_mc_to_hash(card, in4_dev);
1193         qeth_l3_add_vlan_mc(card);
1194 unlock:
1195         rcu_read_unlock();
1196 }
1197
1198 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card,
1199                                     struct inet6_dev *in6_dev)
1200 {
1201         struct qeth_ipaddr *ipm;
1202         struct ifmcaddr6 *im6;
1203         struct qeth_ipaddr *tmp;
1204
1205         QETH_CARD_TEXT(card, 4, "addmc6");
1206
1207         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1208         if (!tmp)
1209                 return;
1210
1211         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1212                 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac);
1213                 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1214                        sizeof(struct in6_addr));
1215                 tmp->is_multicast = 1;
1216
1217                 ipm = qeth_l3_find_addr_by_ip(card, tmp);
1218                 if (ipm) {
1219                         /* for mcast, by-IP match means full match */
1220                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1221                         continue;
1222                 }
1223
1224                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1225                 if (!ipm)
1226                         continue;
1227
1228                 ether_addr_copy(ipm->mac, tmp->mac);
1229                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1230                        sizeof(struct in6_addr));
1231                 ipm->is_multicast = 1;
1232                 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1233                 hash_add(card->ip_mc_htable,
1234                                 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1235
1236         }
1237         kfree(tmp);
1238 }
1239
1240 /* called with rcu_read_lock */
1241 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1242 {
1243         struct inet6_dev *in_dev;
1244         u16 vid;
1245
1246         QETH_CARD_TEXT(card, 4, "admc6vl");
1247
1248         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1249                 return;
1250
1251         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1252                 struct net_device *netdev;
1253
1254                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1255                                               vid);
1256                 if (netdev == NULL ||
1257                     !(netdev->flags & IFF_UP))
1258                         continue;
1259                 in_dev = in6_dev_get(netdev);
1260                 if (!in_dev)
1261                         continue;
1262                 read_lock_bh(&in_dev->lock);
1263                 qeth_l3_add_mc6_to_hash(card, in_dev);
1264                 read_unlock_bh(&in_dev->lock);
1265                 in6_dev_put(in_dev);
1266         }
1267 }
1268
1269 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1270 {
1271         struct inet6_dev *in6_dev;
1272
1273         QETH_CARD_TEXT(card, 4, "chkmcv6");
1274
1275         if (!qeth_is_supported(card, IPA_IPV6))
1276                 return ;
1277         in6_dev = in6_dev_get(card->dev);
1278         if (!in6_dev)
1279                 return;
1280
1281         rcu_read_lock();
1282         read_lock_bh(&in6_dev->lock);
1283         qeth_l3_add_mc6_to_hash(card, in6_dev);
1284         qeth_l3_add_vlan_mc6(card);
1285         read_unlock_bh(&in6_dev->lock);
1286         rcu_read_unlock();
1287         in6_dev_put(in6_dev);
1288 }
1289
1290 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1291                                    __be16 proto, u16 vid)
1292 {
1293         struct qeth_card *card = dev->ml_priv;
1294
1295         set_bit(vid, card->active_vlans);
1296         return 0;
1297 }
1298
1299 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1300                                     __be16 proto, u16 vid)
1301 {
1302         struct qeth_card *card = dev->ml_priv;
1303
1304         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1305
1306         clear_bit(vid, card->active_vlans);
1307         qeth_l3_set_rx_mode(dev);
1308         return 0;
1309 }
1310
1311 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb,
1312                                 struct qeth_hdr *hdr)
1313 {
1314         struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data;
1315         struct net_device *dev = skb->dev;
1316
1317         if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) {
1318                 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr,
1319                                 "FAKELL", skb->len);
1320                 return;
1321         }
1322
1323         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1324                 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1325                                                                  ETH_P_IP;
1326                 unsigned char tg_addr[ETH_ALEN];
1327
1328                 skb_reset_network_header(skb);
1329                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1330                 case QETH_CAST_MULTICAST:
1331                         if (prot == ETH_P_IP)
1332                                 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr);
1333                         else
1334                                 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr);
1335                         QETH_CARD_STAT_INC(card, rx_multicast);
1336                         break;
1337                 case QETH_CAST_BROADCAST:
1338                         ether_addr_copy(tg_addr, card->dev->broadcast);
1339                         QETH_CARD_STAT_INC(card, rx_multicast);
1340                         break;
1341                 default:
1342                         if (card->options.sniffer)
1343                                 skb->pkt_type = PACKET_OTHERHOST;
1344                         ether_addr_copy(tg_addr, card->dev->dev_addr);
1345                 }
1346
1347                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1348                         card->dev->header_ops->create(skb, card->dev, prot,
1349                                 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac,
1350                                 skb->len);
1351                 else
1352                         card->dev->header_ops->create(skb, card->dev, prot,
1353                                 tg_addr, "FAKELL", skb->len);
1354         }
1355
1356         /* copy VLAN tag from hdr into skb */
1357         if (!card->options.sniffer &&
1358             (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME |
1359                                       QETH_HDR_EXT_INCLUDE_VLAN_TAG))) {
1360                 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1361                                 hdr->hdr.l3.vlan_id :
1362                                 hdr->hdr.l3.next_hop.rx.vlan_id;
1363                 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
1364         }
1365
1366         qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags);
1367 }
1368
1369 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1370                                 int budget, int *done)
1371 {
1372         int work_done = 0;
1373         struct sk_buff *skb;
1374         struct qeth_hdr *hdr;
1375         unsigned int len;
1376
1377         *done = 0;
1378         WARN_ON_ONCE(!budget);
1379         while (budget) {
1380                 skb = qeth_core_get_next_skb(card,
1381                         &card->qdio.in_q->bufs[card->rx.b_index],
1382                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1383                 if (!skb) {
1384                         *done = 1;
1385                         break;
1386                 }
1387                 switch (hdr->hdr.l3.id) {
1388                 case QETH_HEADER_TYPE_LAYER3:
1389                         qeth_l3_rebuild_skb(card, skb, hdr);
1390                         /* fall through */
1391                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1392                         skb->protocol = eth_type_trans(skb, skb->dev);
1393                         len = skb->len;
1394                         napi_gro_receive(&card->napi, skb);
1395                         break;
1396                 default:
1397                         dev_kfree_skb_any(skb);
1398                         QETH_CARD_TEXT(card, 3, "inbunkno");
1399                         QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
1400                         continue;
1401                 }
1402                 work_done++;
1403                 budget--;
1404                 QETH_CARD_STAT_INC(card, rx_packets);
1405                 QETH_CARD_STAT_ADD(card, rx_bytes, len);
1406         }
1407         return work_done;
1408 }
1409
1410 static void qeth_l3_stop_card(struct qeth_card *card)
1411 {
1412         QETH_CARD_TEXT(card, 2, "stopcard");
1413
1414         qeth_set_allowed_threads(card, 0, 1);
1415
1416         cancel_work_sync(&card->rx_mode_work);
1417         qeth_l3_drain_rx_mode_cache(card);
1418
1419         if (card->options.sniffer &&
1420             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1421                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1422
1423         if (card->state == CARD_STATE_SOFTSETUP) {
1424                 qeth_l3_clear_ip_htable(card, 1);
1425                 qeth_clear_ipacmd_list(card);
1426                 card->state = CARD_STATE_HARDSETUP;
1427         }
1428         if (card->state == CARD_STATE_HARDSETUP) {
1429                 qeth_qdio_clear_card(card, 0);
1430                 qeth_drain_output_queues(card);
1431                 qeth_clear_working_pool_list(card);
1432                 card->state = CARD_STATE_DOWN;
1433         }
1434
1435         flush_workqueue(card->event_wq);
1436 }
1437
1438 /*
1439  * test for and Switch promiscuous mode (on or off)
1440  *  either for guestlan or HiperSocket Sniffer
1441  */
1442 static void
1443 qeth_l3_handle_promisc_mode(struct qeth_card *card)
1444 {
1445         struct net_device *dev = card->dev;
1446
1447         if (((dev->flags & IFF_PROMISC) &&
1448              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1449             (!(dev->flags & IFF_PROMISC) &&
1450              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1451                 return;
1452
1453         if (IS_VM_NIC(card)) {          /* Guestlan trace */
1454                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1455                         qeth_setadp_promisc_mode(card);
1456         } else if (card->options.sniffer &&     /* HiperSockets trace */
1457                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1458                 if (dev->flags & IFF_PROMISC) {
1459                         QETH_CARD_TEXT(card, 3, "+promisc");
1460                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1461                 } else {
1462                         QETH_CARD_TEXT(card, 3, "-promisc");
1463                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1464                 }
1465         }
1466 }
1467
1468 static void qeth_l3_rx_mode_work(struct work_struct *work)
1469 {
1470         struct qeth_card *card = container_of(work, struct qeth_card,
1471                                               rx_mode_work);
1472         struct qeth_ipaddr *addr;
1473         struct hlist_node *tmp;
1474         int i, rc;
1475
1476         QETH_CARD_TEXT(card, 3, "setmulti");
1477
1478         if (!card->options.sniffer) {
1479                 qeth_l3_add_multicast_ipv4(card);
1480                 qeth_l3_add_multicast_ipv6(card);
1481
1482                 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1483                         switch (addr->disp_flag) {
1484                         case QETH_DISP_ADDR_DELETE:
1485                                 rc = qeth_l3_deregister_addr_entry(card, addr);
1486                                 if (!rc || rc == -ENOENT) {
1487                                         hash_del(&addr->hnode);
1488                                         kfree(addr);
1489                                 }
1490                                 break;
1491                         case QETH_DISP_ADDR_ADD:
1492                                 rc = qeth_l3_register_addr_entry(card, addr);
1493                                 if (rc && rc != -ENETDOWN) {
1494                                         hash_del(&addr->hnode);
1495                                         kfree(addr);
1496                                         break;
1497                                 }
1498                                 addr->ref_counter = 1;
1499                                 /* fall through */
1500                         default:
1501                                 /* for next call to set_rx_mode(): */
1502                                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1503                         }
1504                 }
1505
1506                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1507                         return;
1508         }
1509         qeth_l3_handle_promisc_mode(card);
1510 }
1511
1512 static int qeth_l3_arp_makerc(u16 rc)
1513 {
1514         switch (rc) {
1515         case IPA_RC_SUCCESS:
1516                 return 0;
1517         case QETH_IPA_ARP_RC_NOTSUPP:
1518         case QETH_IPA_ARP_RC_Q_NOTSUPP:
1519                 return -EOPNOTSUPP;
1520         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1521                 return -EINVAL;
1522         case QETH_IPA_ARP_RC_Q_NO_DATA:
1523                 return -ENOENT;
1524         default:
1525                 return -EIO;
1526         }
1527 }
1528
1529 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1530                               unsigned long data)
1531 {
1532         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1533
1534         qeth_setassparms_cb(card, reply, data);
1535         return qeth_l3_arp_makerc(cmd->hdr.return_code);
1536 }
1537
1538 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1539 {
1540         struct qeth_cmd_buffer *iob;
1541         int rc;
1542
1543         QETH_CARD_TEXT(card, 3, "arpstnoe");
1544
1545         /*
1546          * currently GuestLAN only supports the ARP assist function
1547          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1548          * thus we say EOPNOTSUPP for this ARP function
1549          */
1550         if (IS_VM_NIC(card))
1551                 return -EOPNOTSUPP;
1552         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1553                 return -EOPNOTSUPP;
1554         }
1555
1556         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1557                                        IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1558                                        SETASS_DATA_SIZEOF(flags_32bit),
1559                                        QETH_PROT_IPV4);
1560         if (!iob)
1561                 return -ENOMEM;
1562
1563         __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1564         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1565         if (rc)
1566                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1567                                  CARD_DEVID(card), rc);
1568         return rc;
1569 }
1570
1571 static __u32 get_arp_entry_size(struct qeth_card *card,
1572                         struct qeth_arp_query_data *qdata,
1573                         struct qeth_arp_entrytype *type, __u8 strip_entries)
1574 {
1575         __u32 rc;
1576         __u8 is_hsi;
1577
1578         is_hsi = qdata->reply_bits == 5;
1579         if (type->ip == QETHARP_IP_ADDR_V4) {
1580                 QETH_CARD_TEXT(card, 4, "arpev4");
1581                 if (strip_entries) {
1582                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1583                                 sizeof(struct qeth_arp_qi_entry7_short);
1584                 } else {
1585                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1586                                 sizeof(struct qeth_arp_qi_entry7);
1587                 }
1588         } else if (type->ip == QETHARP_IP_ADDR_V6) {
1589                 QETH_CARD_TEXT(card, 4, "arpev6");
1590                 if (strip_entries) {
1591                         rc = is_hsi ?
1592                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1593                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1594                 } else {
1595                         rc = is_hsi ?
1596                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1597                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
1598                 }
1599         } else {
1600                 QETH_CARD_TEXT(card, 4, "arpinv");
1601                 rc = 0;
1602         }
1603
1604         return rc;
1605 }
1606
1607 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1608 {
1609         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1610                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1611 }
1612
1613 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1614                 struct qeth_reply *reply, unsigned long data)
1615 {
1616         struct qeth_ipa_cmd *cmd;
1617         struct qeth_arp_query_data *qdata;
1618         struct qeth_arp_query_info *qinfo;
1619         int e;
1620         int entrybytes_done;
1621         int stripped_bytes;
1622         __u8 do_strip_entries;
1623
1624         QETH_CARD_TEXT(card, 3, "arpquecb");
1625
1626         qinfo = (struct qeth_arp_query_info *) reply->param;
1627         cmd = (struct qeth_ipa_cmd *) data;
1628         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1629         if (cmd->hdr.return_code) {
1630                 QETH_CARD_TEXT(card, 4, "arpcberr");
1631                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1632                 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1633         }
1634         if (cmd->data.setassparms.hdr.return_code) {
1635                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1636                 QETH_CARD_TEXT(card, 4, "setaperr");
1637                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1638                 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1639         }
1640         qdata = &cmd->data.setassparms.data.query_arp;
1641         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1642
1643         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1644         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1645         entrybytes_done = 0;
1646         for (e = 0; e < qdata->no_entries; ++e) {
1647                 char *cur_entry;
1648                 __u32 esize;
1649                 struct qeth_arp_entrytype *etype;
1650
1651                 cur_entry = &qdata->data + entrybytes_done;
1652                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1653                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1654                         QETH_CARD_TEXT(card, 4, "pmis");
1655                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1656                         break;
1657                 }
1658                 esize = get_arp_entry_size(card, qdata, etype,
1659                         do_strip_entries);
1660                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1661                 if (!esize)
1662                         break;
1663
1664                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1665                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1666                         memset(qinfo->udata, 0, 4);
1667                         return -ENOSPC;
1668                 }
1669
1670                 memcpy(qinfo->udata + qinfo->udata_offset,
1671                         &qdata->data + entrybytes_done + stripped_bytes,
1672                         esize);
1673                 entrybytes_done += esize + stripped_bytes;
1674                 qinfo->udata_offset += esize;
1675                 ++qinfo->no_entries;
1676         }
1677         /* check if all replies received ... */
1678         if (cmd->data.setassparms.hdr.seq_no <
1679             cmd->data.setassparms.hdr.number_of_replies)
1680                 return 1;
1681         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1682         memcpy(qinfo->udata, &qinfo->no_entries, 4);
1683         /* keep STRIP_ENTRIES flag so the user program can distinguish
1684          * stripped entries from normal ones */
1685         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1686                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1687         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1688         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1689         return 0;
1690 }
1691
1692 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1693         enum qeth_prot_versions prot,
1694         struct qeth_arp_query_info *qinfo)
1695 {
1696         struct qeth_cmd_buffer *iob;
1697         struct qeth_ipa_cmd *cmd;
1698         int rc;
1699
1700         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1701
1702         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1703                                        IPA_CMD_ASS_ARP_QUERY_INFO,
1704                                        SETASS_DATA_SIZEOF(query_arp), prot);
1705         if (!iob)
1706                 return -ENOMEM;
1707         cmd = __ipa_cmd(iob);
1708         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1709         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1710         if (rc)
1711                 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1712                                  CARD_DEVID(card), rc);
1713         return rc;
1714 }
1715
1716 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1717 {
1718         struct qeth_arp_query_info qinfo = {0, };
1719         int rc;
1720
1721         QETH_CARD_TEXT(card, 3, "arpquery");
1722
1723         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1724                                IPA_ARP_PROCESSING)) {
1725                 QETH_CARD_TEXT(card, 3, "arpqnsup");
1726                 rc = -EOPNOTSUPP;
1727                 goto out;
1728         }
1729         /* get size of userspace buffer and mask_bits -> 6 bytes */
1730         if (copy_from_user(&qinfo, udata, 6)) {
1731                 rc = -EFAULT;
1732                 goto out;
1733         }
1734         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1735         if (!qinfo.udata) {
1736                 rc = -ENOMEM;
1737                 goto out;
1738         }
1739         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1740         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1741         if (rc) {
1742                 if (copy_to_user(udata, qinfo.udata, 4))
1743                         rc = -EFAULT;
1744                 goto free_and_out;
1745         }
1746         if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1747                 /* fails in case of GuestLAN QDIO mode */
1748                 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1749         }
1750         if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1751                 QETH_CARD_TEXT(card, 4, "qactf");
1752                 rc = -EFAULT;
1753                 goto free_and_out;
1754         }
1755         QETH_CARD_TEXT(card, 4, "qacts");
1756
1757 free_and_out:
1758         kfree(qinfo.udata);
1759 out:
1760         return rc;
1761 }
1762
1763 static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1764                                     struct qeth_arp_cache_entry *entry,
1765                                     enum qeth_arp_process_subcmds arp_cmd)
1766 {
1767         struct qeth_arp_cache_entry *cmd_entry;
1768         struct qeth_cmd_buffer *iob;
1769         int rc;
1770
1771         if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1772                 QETH_CARD_TEXT(card, 3, "arpadd");
1773         else
1774                 QETH_CARD_TEXT(card, 3, "arpdel");
1775
1776         /*
1777          * currently GuestLAN only supports the ARP assist function
1778          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1779          * thus we say EOPNOTSUPP for this ARP function
1780          */
1781         if (IS_VM_NIC(card))
1782                 return -EOPNOTSUPP;
1783         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1784                 return -EOPNOTSUPP;
1785         }
1786
1787         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1788                                        SETASS_DATA_SIZEOF(arp_entry),
1789                                        QETH_PROT_IPV4);
1790         if (!iob)
1791                 return -ENOMEM;
1792
1793         cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1794         ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1795         memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1796         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1797         if (rc)
1798                 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1799                                  arp_cmd, CARD_DEVID(card), rc);
1800         return rc;
1801 }
1802
1803 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1804 {
1805         struct qeth_cmd_buffer *iob;
1806         int rc;
1807
1808         QETH_CARD_TEXT(card, 3, "arpflush");
1809
1810         /*
1811          * currently GuestLAN only supports the ARP assist function
1812          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1813          * thus we say EOPNOTSUPP for this ARP function
1814         */
1815         if (IS_VM_NIC(card) || IS_IQD(card))
1816                 return -EOPNOTSUPP;
1817         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1818                 return -EOPNOTSUPP;
1819         }
1820
1821         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1822                                        IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1823                                        QETH_PROT_IPV4);
1824         if (!iob)
1825                 return -ENOMEM;
1826
1827         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1828         if (rc)
1829                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1830                                  CARD_DEVID(card), rc);
1831         return rc;
1832 }
1833
1834 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1835 {
1836         struct qeth_card *card = dev->ml_priv;
1837         struct qeth_arp_cache_entry arp_entry;
1838         enum qeth_arp_process_subcmds arp_cmd;
1839         int rc = 0;
1840
1841         switch (cmd) {
1842         case SIOC_QETH_ARP_SET_NO_ENTRIES:
1843                 if (!capable(CAP_NET_ADMIN)) {
1844                         rc = -EPERM;
1845                         break;
1846                 }
1847                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1848                 break;
1849         case SIOC_QETH_ARP_QUERY_INFO:
1850                 if (!capable(CAP_NET_ADMIN)) {
1851                         rc = -EPERM;
1852                         break;
1853                 }
1854                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1855                 break;
1856         case SIOC_QETH_ARP_ADD_ENTRY:
1857         case SIOC_QETH_ARP_REMOVE_ENTRY:
1858                 if (!capable(CAP_NET_ADMIN))
1859                         return -EPERM;
1860                 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1861                         return -EFAULT;
1862
1863                 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1864                                 IPA_CMD_ASS_ARP_ADD_ENTRY :
1865                                 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1866                 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1867         case SIOC_QETH_ARP_FLUSH_CACHE:
1868                 if (!capable(CAP_NET_ADMIN)) {
1869                         rc = -EPERM;
1870                         break;
1871                 }
1872                 rc = qeth_l3_arp_flush_cache(card);
1873                 break;
1874         default:
1875                 rc = -EOPNOTSUPP;
1876         }
1877         return rc;
1878 }
1879
1880 static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
1881                                      int ipv)
1882 {
1883         struct neighbour *n = NULL;
1884
1885         if (dst)
1886                 n = dst_neigh_lookup_skb(dst, skb);
1887
1888         if (n) {
1889                 int cast_type = n->type;
1890
1891                 neigh_release(n);
1892                 if ((cast_type == RTN_BROADCAST) ||
1893                     (cast_type == RTN_MULTICAST) ||
1894                     (cast_type == RTN_ANYCAST))
1895                         return cast_type;
1896                 return RTN_UNICAST;
1897         }
1898
1899         /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1900         switch (ipv) {
1901         case 4:
1902                 if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
1903                         return RTN_BROADCAST;
1904                 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1905                                 RTN_MULTICAST : RTN_UNICAST;
1906         case 6:
1907                 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1908                                 RTN_MULTICAST : RTN_UNICAST;
1909         default:
1910                 /* ... and MAC address */
1911                 return qeth_get_ether_cast_type(skb);
1912         }
1913 }
1914
1915 static int qeth_l3_get_cast_type(struct sk_buff *skb)
1916 {
1917         int ipv = qeth_get_ip_version(skb);
1918         struct dst_entry *dst;
1919         int cast_type;
1920
1921         rcu_read_lock();
1922         dst = qeth_dst_check_rcu(skb, ipv);
1923         cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
1924         rcu_read_unlock();
1925
1926         return cast_type;
1927 }
1928
1929 static u8 qeth_l3_cast_type_to_flag(int cast_type)
1930 {
1931         if (cast_type == RTN_MULTICAST)
1932                 return QETH_CAST_MULTICAST;
1933         if (cast_type == RTN_ANYCAST)
1934                 return QETH_CAST_ANYCAST;
1935         if (cast_type == RTN_BROADCAST)
1936                 return QETH_CAST_BROADCAST;
1937         return QETH_CAST_UNICAST;
1938 }
1939
1940 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1941                                 struct qeth_hdr *hdr, struct sk_buff *skb,
1942                                 int ipv, unsigned int data_len)
1943 {
1944         struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1945         struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1946         struct qeth_card *card = queue->card;
1947         struct dst_entry *dst;
1948         int cast_type;
1949
1950         hdr->hdr.l3.length = data_len;
1951
1952         if (skb_is_gso(skb)) {
1953                 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1954         } else {
1955                 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1956
1957                 if (skb->protocol == htons(ETH_P_AF_IUCV)) {
1958                         l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
1959                         l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80);
1960                         memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2],
1961                                iucv_trans_hdr(skb)->destUserID, 8);
1962                         return;
1963                 }
1964
1965                 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1966                         qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
1967                         /* some HW requires combined L3+L4 csum offload: */
1968                         if (ipv == 4)
1969                                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1970                         QETH_TXQ_STAT_INC(queue, skbs_csum);
1971                 }
1972         }
1973
1974         if (ipv == 4 || IS_IQD(card)) {
1975                 /* NETIF_F_HW_VLAN_CTAG_TX */
1976                 if (skb_vlan_tag_present(skb)) {
1977                         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1978                         hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1979                 }
1980         } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1981                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1982                 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1983         }
1984
1985         rcu_read_lock();
1986         dst = qeth_dst_check_rcu(skb, ipv);
1987
1988         if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
1989                 cast_type = RTN_UNICAST;
1990         else
1991                 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
1992         l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
1993
1994         if (ipv == 4) {
1995                 struct rtable *rt = (struct rtable *) dst;
1996
1997                 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
1998                                 rt_nexthop(rt, ip_hdr(skb)->daddr) :
1999                                 ip_hdr(skb)->daddr;
2000         } else if (ipv == 6) {
2001                 struct rt6_info *rt = (struct rt6_info *) dst;
2002
2003                 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
2004                         l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway;
2005                 else
2006                         l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr;
2007
2008                 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
2009                 if (!IS_IQD(card))
2010                         hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
2011         } else {
2012                 /* OSA only: */
2013                 l3_hdr->flags |= QETH_HDR_PASSTHRU;
2014         }
2015         rcu_read_unlock();
2016 }
2017
2018 static void qeth_l3_fixup_headers(struct sk_buff *skb)
2019 {
2020         struct iphdr *iph = ip_hdr(skb);
2021
2022         /* this is safe, IPv6 traffic takes a different path */
2023         if (skb->ip_summed == CHECKSUM_PARTIAL)
2024                 iph->check = 0;
2025         if (skb_is_gso(skb)) {
2026                 iph->tot_len = 0;
2027                 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
2028                                                     iph->daddr, 0);
2029         }
2030 }
2031
2032 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
2033                         struct qeth_qdio_out_q *queue, int ipv)
2034 {
2035         unsigned int hw_hdr_len;
2036         int rc;
2037
2038         /* re-use the L2 header area for the HW header: */
2039         hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
2040                                        sizeof(struct qeth_hdr);
2041         rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
2042         if (rc)
2043                 return rc;
2044         skb_pull(skb, ETH_HLEN);
2045
2046         qeth_l3_fixup_headers(skb);
2047         return qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
2048 }
2049
2050 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2051                                            struct net_device *dev)
2052 {
2053         struct qeth_card *card = dev->ml_priv;
2054         u16 txq = skb_get_queue_mapping(skb);
2055         int ipv = qeth_get_ip_version(skb);
2056         struct qeth_qdio_out_q *queue;
2057         int tx_bytes = skb->len;
2058         int rc;
2059
2060         if (IS_IQD(card)) {
2061                 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
2062
2063                 if (card->options.sniffer)
2064                         goto tx_drop;
2065                 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
2066                     (card->options.cq == QETH_CQ_ENABLED &&
2067                      skb->protocol != htons(ETH_P_AF_IUCV)))
2068                         goto tx_drop;
2069         } else {
2070                 queue = card->qdio.out_qs[txq];
2071         }
2072
2073         if (!(dev->flags & IFF_BROADCAST) &&
2074             qeth_l3_get_cast_type(skb) == RTN_BROADCAST)
2075                 goto tx_drop;
2076
2077         if (ipv == 4 || IS_IQD(card))
2078                 rc = qeth_l3_xmit(card, skb, queue, ipv);
2079         else
2080                 rc = qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
2081
2082         if (!rc) {
2083                 QETH_TXQ_STAT_INC(queue, tx_packets);
2084                 QETH_TXQ_STAT_ADD(queue, tx_bytes, tx_bytes);
2085                 return NETDEV_TX_OK;
2086         }
2087
2088 tx_drop:
2089         QETH_TXQ_STAT_INC(queue, tx_dropped);
2090         kfree_skb(skb);
2091         return NETDEV_TX_OK;
2092 }
2093
2094 static void qeth_l3_set_rx_mode(struct net_device *dev)
2095 {
2096         struct qeth_card *card = dev->ml_priv;
2097
2098         schedule_work(&card->rx_mode_work);
2099 }
2100
2101 /*
2102  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2103  * NOARP on the netdevice is no option because it also turns off neighbor
2104  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2105  * arp resolution but we want the hard header (packet socket will work
2106  * e.g. tcpdump)
2107  */
2108 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2109 {
2110         n->nud_state = NUD_NOARP;
2111         memcpy(n->ha, "FAKELL", 6);
2112         n->output = n->ops->connected_output;
2113         return 0;
2114 }
2115
2116 static int
2117 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2118 {
2119         if (np->tbl->family == AF_INET)
2120                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2121
2122         return 0;
2123 }
2124
2125 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
2126                                                     struct net_device *dev,
2127                                                     netdev_features_t features)
2128 {
2129         if (qeth_get_ip_version(skb) != 4)
2130                 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
2131         return qeth_features_check(skb, dev, features);
2132 }
2133
2134 static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
2135                                     struct net_device *sb_dev)
2136 {
2137         return qeth_iqd_select_queue(dev, skb, qeth_l3_get_cast_type(skb),
2138                                      sb_dev);
2139 }
2140
2141 static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
2142                                     struct net_device *sb_dev)
2143 {
2144         struct qeth_card *card = dev->ml_priv;
2145
2146         return qeth_get_priority_queue(card, skb);
2147 }
2148
2149 static const struct net_device_ops qeth_l3_netdev_ops = {
2150         .ndo_open               = qeth_open,
2151         .ndo_stop               = qeth_stop,
2152         .ndo_get_stats64        = qeth_get_stats64,
2153         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2154         .ndo_select_queue       = qeth_l3_iqd_select_queue,
2155         .ndo_validate_addr      = eth_validate_addr,
2156         .ndo_set_rx_mode        = qeth_l3_set_rx_mode,
2157         .ndo_do_ioctl           = qeth_do_ioctl,
2158         .ndo_fix_features       = qeth_fix_features,
2159         .ndo_set_features       = qeth_set_features,
2160         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2161         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2162         .ndo_tx_timeout         = qeth_tx_timeout,
2163 };
2164
2165 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2166         .ndo_open               = qeth_open,
2167         .ndo_stop               = qeth_stop,
2168         .ndo_get_stats64        = qeth_get_stats64,
2169         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2170         .ndo_features_check     = qeth_l3_osa_features_check,
2171         .ndo_select_queue       = qeth_l3_osa_select_queue,
2172         .ndo_validate_addr      = eth_validate_addr,
2173         .ndo_set_rx_mode        = qeth_l3_set_rx_mode,
2174         .ndo_do_ioctl           = qeth_do_ioctl,
2175         .ndo_fix_features       = qeth_fix_features,
2176         .ndo_set_features       = qeth_set_features,
2177         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2178         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2179         .ndo_tx_timeout         = qeth_tx_timeout,
2180         .ndo_neigh_setup        = qeth_l3_neigh_setup,
2181 };
2182
2183 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
2184 {
2185         unsigned int headroom;
2186         int rc;
2187
2188         if (IS_OSD(card) || IS_OSX(card)) {
2189                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2190                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2191                         pr_info("qeth_l3: ignoring TR device\n");
2192                         return -ENODEV;
2193                 }
2194
2195                 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2196
2197                 /*IPv6 address autoconfiguration stuff*/
2198                 qeth_l3_get_unique_id(card);
2199                 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2200                         card->dev->dev_id = card->info.unique_id & 0xffff;
2201
2202                 if (!IS_VM_NIC(card)) {
2203                         card->dev->features |= NETIF_F_SG;
2204                         card->dev->hw_features |= NETIF_F_TSO |
2205                                 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2206                         card->dev->vlan_features |= NETIF_F_TSO |
2207                                 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
2208                 }
2209
2210                 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
2211                         card->dev->hw_features |= NETIF_F_IPV6_CSUM;
2212                         card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
2213                 }
2214                 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
2215                         card->dev->hw_features |= NETIF_F_TSO6;
2216                         card->dev->vlan_features |= NETIF_F_TSO6;
2217                 }
2218
2219                 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
2220                 if (card->dev->hw_features & NETIF_F_TSO6)
2221                         headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
2222                 else if (card->dev->hw_features & NETIF_F_TSO)
2223                         headroom = sizeof(struct qeth_hdr_tso);
2224                 else
2225                         headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
2226         } else if (IS_IQD(card)) {
2227                 card->dev->flags |= IFF_NOARP;
2228                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2229                 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
2230
2231                 rc = qeth_l3_iqd_read_initial_mac(card);
2232                 if (rc)
2233                         goto out;
2234         } else
2235                 return -ENODEV;
2236
2237         card->dev->needed_headroom = headroom;
2238         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
2239                                 NETIF_F_HW_VLAN_CTAG_RX |
2240                                 NETIF_F_HW_VLAN_CTAG_FILTER;
2241
2242         netif_keep_dst(card->dev);
2243         if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
2244                 netif_set_gso_max_size(card->dev,
2245                                        PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
2246
2247         netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
2248         rc = register_netdev(card->dev);
2249         if (!rc && carrier_ok)
2250                 netif_carrier_on(card->dev);
2251
2252 out:
2253         if (rc)
2254                 card->dev->netdev_ops = NULL;
2255         return rc;
2256 }
2257
2258 static const struct device_type qeth_l3_devtype = {
2259         .name = "qeth_layer3",
2260         .groups = qeth_l3_attr_groups,
2261 };
2262
2263 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2264 {
2265         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2266         int rc;
2267
2268         hash_init(card->ip_htable);
2269         mutex_init(&card->ip_lock);
2270         card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
2271                                                dev_name(&gdev->dev));
2272         if (!card->cmd_wq)
2273                 return -ENOMEM;
2274
2275         if (gdev->dev.type == &qeth_generic_devtype) {
2276                 rc = qeth_l3_create_device_attributes(&gdev->dev);
2277                 if (rc) {
2278                         destroy_workqueue(card->cmd_wq);
2279                         return rc;
2280                 }
2281         }
2282
2283         hash_init(card->ip_mc_htable);
2284         INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
2285         return 0;
2286 }
2287
2288 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2289 {
2290         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2291
2292         if (cgdev->dev.type == &qeth_generic_devtype)
2293                 qeth_l3_remove_device_attributes(&cgdev->dev);
2294
2295         qeth_set_allowed_threads(card, 0, 1);
2296         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2297
2298         if (cgdev->state == CCWGROUP_ONLINE)
2299                 qeth_l3_set_offline(cgdev);
2300
2301         cancel_work_sync(&card->close_dev_work);
2302         if (qeth_netdev_is_registered(card->dev))
2303                 unregister_netdev(card->dev);
2304
2305         flush_workqueue(card->cmd_wq);
2306         destroy_workqueue(card->cmd_wq);
2307         qeth_l3_clear_ip_htable(card, 0);
2308         qeth_l3_clear_ipato_list(card);
2309 }
2310
2311 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
2312 {
2313         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2314         struct net_device *dev = card->dev;
2315         int rc = 0;
2316         bool carrier_ok;
2317
2318         mutex_lock(&card->discipline_mutex);
2319         mutex_lock(&card->conf_mutex);
2320         QETH_CARD_TEXT(card, 2, "setonlin");
2321
2322         rc = qeth_core_hardsetup_card(card, &carrier_ok);
2323         if (rc) {
2324                 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
2325                 rc = -ENODEV;
2326                 goto out_remove;
2327         }
2328
2329         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
2330                 if (card->info.hwtrap &&
2331                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
2332                         card->info.hwtrap = 0;
2333         } else
2334                 card->info.hwtrap = 0;
2335
2336         card->state = CARD_STATE_HARDSETUP;
2337         qeth_print_status_message(card);
2338
2339         /* softsetup */
2340         QETH_CARD_TEXT(card, 2, "softsetp");
2341
2342         rc = qeth_l3_setadapter_parms(card);
2343         if (rc)
2344                 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
2345         if (!card->options.sniffer) {
2346                 rc = qeth_l3_start_ipassists(card);
2347                 if (rc) {
2348                         QETH_CARD_TEXT_(card, 2, "3err%d", rc);
2349                         goto out_remove;
2350                 }
2351                 rc = qeth_l3_setrouting_v4(card);
2352                 if (rc)
2353                         QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
2354                 rc = qeth_l3_setrouting_v6(card);
2355                 if (rc)
2356                         QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
2357         }
2358
2359         rc = qeth_init_qdio_queues(card);
2360         if (rc) {
2361                 QETH_CARD_TEXT_(card, 2, "6err%d", rc);
2362                 rc = -ENODEV;
2363                 goto out_remove;
2364         }
2365         card->state = CARD_STATE_SOFTSETUP;
2366
2367         qeth_set_allowed_threads(card, 0xffffffff, 0);
2368         qeth_l3_recover_ip(card);
2369
2370         if (!qeth_netdev_is_registered(dev)) {
2371                 rc = qeth_l3_setup_netdev(card, carrier_ok);
2372                 if (rc)
2373                         goto out_remove;
2374         } else {
2375                 rtnl_lock();
2376                 if (carrier_ok)
2377                         netif_carrier_on(dev);
2378                 else
2379                         netif_carrier_off(dev);
2380
2381                 netif_device_attach(dev);
2382                 qeth_enable_hw_features(dev);
2383
2384                 if (card->info.open_when_online) {
2385                         card->info.open_when_online = 0;
2386                         dev_open(dev, NULL);
2387                 }
2388                 rtnl_unlock();
2389         }
2390         qeth_trace_features(card);
2391         /* let user_space know that device is online */
2392         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2393         mutex_unlock(&card->conf_mutex);
2394         mutex_unlock(&card->discipline_mutex);
2395         return 0;
2396 out_remove:
2397         qeth_l3_stop_card(card);
2398         ccw_device_set_offline(CARD_DDEV(card));
2399         ccw_device_set_offline(CARD_WDEV(card));
2400         ccw_device_set_offline(CARD_RDEV(card));
2401         qdio_free(CARD_DDEV(card));
2402
2403         mutex_unlock(&card->conf_mutex);
2404         mutex_unlock(&card->discipline_mutex);
2405         return rc;
2406 }
2407
2408 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
2409                         int recovery_mode)
2410 {
2411         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2412         int rc = 0, rc2 = 0, rc3 = 0;
2413
2414         mutex_lock(&card->discipline_mutex);
2415         mutex_lock(&card->conf_mutex);
2416         QETH_CARD_TEXT(card, 3, "setoffl");
2417
2418         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
2419                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
2420                 card->info.hwtrap = 1;
2421         }
2422
2423         rtnl_lock();
2424         card->info.open_when_online = card->dev->flags & IFF_UP;
2425         dev_close(card->dev);
2426         netif_device_detach(card->dev);
2427         netif_carrier_off(card->dev);
2428         rtnl_unlock();
2429
2430         qeth_l3_stop_card(card);
2431         if (card->options.cq == QETH_CQ_ENABLED) {
2432                 rtnl_lock();
2433                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
2434                 rtnl_unlock();
2435         }
2436         rc  = ccw_device_set_offline(CARD_DDEV(card));
2437         rc2 = ccw_device_set_offline(CARD_WDEV(card));
2438         rc3 = ccw_device_set_offline(CARD_RDEV(card));
2439         if (!rc)
2440                 rc = (rc2) ? rc2 : rc3;
2441         if (rc)
2442                 QETH_CARD_TEXT_(card, 2, "1err%d", rc);
2443         qdio_free(CARD_DDEV(card));
2444
2445         /* let user_space know that device is offline */
2446         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
2447         mutex_unlock(&card->conf_mutex);
2448         mutex_unlock(&card->discipline_mutex);
2449         return 0;
2450 }
2451
2452 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
2453 {
2454         return __qeth_l3_set_offline(cgdev, 0);
2455 }
2456
2457 static int qeth_l3_recover(void *ptr)
2458 {
2459         struct qeth_card *card;
2460         int rc = 0;
2461
2462         card = (struct qeth_card *) ptr;
2463         QETH_CARD_TEXT(card, 2, "recover1");
2464         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
2465         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
2466                 return 0;
2467         QETH_CARD_TEXT(card, 2, "recover2");
2468         dev_warn(&card->gdev->dev,
2469                 "A recovery process has been started for the device\n");
2470         __qeth_l3_set_offline(card->gdev, 1);
2471         rc = qeth_l3_set_online(card->gdev);
2472         if (!rc)
2473                 dev_info(&card->gdev->dev,
2474                         "Device successfully recovered!\n");
2475         else {
2476                 ccwgroup_set_offline(card->gdev);
2477                 dev_warn(&card->gdev->dev, "The qeth device driver "
2478                                 "failed to recover an error on the device\n");
2479         }
2480         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
2481         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
2482         return 0;
2483 }
2484
2485 /* Returns zero if the command is successfully "consumed" */
2486 static int qeth_l3_control_event(struct qeth_card *card,
2487                                         struct qeth_ipa_cmd *cmd)
2488 {
2489         return 1;
2490 }
2491
2492 struct qeth_discipline qeth_l3_discipline = {
2493         .devtype = &qeth_l3_devtype,
2494         .process_rx_buffer = qeth_l3_process_inbound_buffer,
2495         .recover = qeth_l3_recover,
2496         .setup = qeth_l3_probe_device,
2497         .remove = qeth_l3_remove_device,
2498         .set_online = qeth_l3_set_online,
2499         .set_offline = qeth_l3_set_offline,
2500         .do_ioctl = qeth_l3_do_ioctl,
2501         .control_event_handler = qeth_l3_control_event,
2502 };
2503 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2504
2505 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2506                                    struct qeth_ipaddr *addr,
2507                                    unsigned long event)
2508 {
2509         switch (event) {
2510         case NETDEV_UP:
2511                 qeth_l3_modify_ip(card, addr, true);
2512                 return NOTIFY_OK;
2513         case NETDEV_DOWN:
2514                 qeth_l3_modify_ip(card, addr, false);
2515                 return NOTIFY_OK;
2516         default:
2517                 return NOTIFY_DONE;
2518         }
2519 }
2520
2521 struct qeth_l3_ip_event_work {
2522         struct work_struct work;
2523         struct qeth_card *card;
2524         struct qeth_ipaddr addr;
2525 };
2526
2527 #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
2528
2529 static void qeth_l3_add_ip_worker(struct work_struct *work)
2530 {
2531         struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2532
2533         qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
2534         kfree(work);
2535 }
2536
2537 static void qeth_l3_delete_ip_worker(struct work_struct *work)
2538 {
2539         struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2540
2541         qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
2542         kfree(work);
2543 }
2544
2545 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2546 {
2547         if (is_vlan_dev(dev))
2548                 dev = vlan_dev_real_dev(dev);
2549         if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2550             dev->netdev_ops == &qeth_l3_netdev_ops)
2551                 return (struct qeth_card *) dev->ml_priv;
2552         return NULL;
2553 }
2554
2555 static int qeth_l3_ip_event(struct notifier_block *this,
2556                             unsigned long event, void *ptr)
2557 {
2558
2559         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2560         struct net_device *dev = ifa->ifa_dev->dev;
2561         struct qeth_ipaddr addr;
2562         struct qeth_card *card;
2563
2564         if (dev_net(dev) != &init_net)
2565                 return NOTIFY_DONE;
2566
2567         card = qeth_l3_get_card_from_dev(dev);
2568         if (!card)
2569                 return NOTIFY_DONE;
2570         QETH_CARD_TEXT(card, 3, "ipevent");
2571
2572         qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2573         addr.u.a4.addr = be32_to_cpu(ifa->ifa_address);
2574         addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask);
2575
2576         return qeth_l3_handle_ip_event(card, &addr, event);
2577 }
2578
2579 static struct notifier_block qeth_l3_ip_notifier = {
2580         qeth_l3_ip_event,
2581         NULL,
2582 };
2583
2584 static int qeth_l3_ip6_event(struct notifier_block *this,
2585                              unsigned long event, void *ptr)
2586 {
2587         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2588         struct net_device *dev = ifa->idev->dev;
2589         struct qeth_l3_ip_event_work *ip_work;
2590         struct qeth_card *card;
2591
2592         if (event != NETDEV_UP && event != NETDEV_DOWN)
2593                 return NOTIFY_DONE;
2594
2595         card = qeth_l3_get_card_from_dev(dev);
2596         if (!card)
2597                 return NOTIFY_DONE;
2598         QETH_CARD_TEXT(card, 3, "ip6event");
2599         if (!qeth_is_supported(card, IPA_IPV6))
2600                 return NOTIFY_DONE;
2601
2602         ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
2603         if (!ip_work)
2604                 return NOTIFY_DONE;
2605
2606         if (event == NETDEV_UP)
2607                 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
2608         else
2609                 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
2610
2611         ip_work->card = card;
2612         qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
2613                             QETH_PROT_IPV6);
2614         ip_work->addr.u.a6.addr = ifa->addr;
2615         ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
2616
2617         queue_work(card->cmd_wq, &ip_work->work);
2618         return NOTIFY_OK;
2619 }
2620
2621 static struct notifier_block qeth_l3_ip6_notifier = {
2622         qeth_l3_ip6_event,
2623         NULL,
2624 };
2625
2626 static int qeth_l3_register_notifiers(void)
2627 {
2628         int rc;
2629
2630         QETH_DBF_TEXT(SETUP, 5, "regnotif");
2631         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2632         if (rc)
2633                 return rc;
2634         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2635         if (rc) {
2636                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2637                 return rc;
2638         }
2639         return 0;
2640 }
2641
2642 static void qeth_l3_unregister_notifiers(void)
2643 {
2644         QETH_DBF_TEXT(SETUP, 5, "unregnot");
2645         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2646         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2647 }
2648
2649 static int __init qeth_l3_init(void)
2650 {
2651         pr_info("register layer 3 discipline\n");
2652         return qeth_l3_register_notifiers();
2653 }
2654
2655 static void __exit qeth_l3_exit(void)
2656 {
2657         qeth_l3_unregister_notifiers();
2658         pr_info("unregister layer 3 discipline\n");
2659 }
2660
2661 module_init(qeth_l3_init);
2662 module_exit(qeth_l3_exit);
2663 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2664 MODULE_DESCRIPTION("qeth layer 3 discipline");
2665 MODULE_LICENSE("GPL");