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 static int qeth_l3_register_addr_entry(struct qeth_card *,
  41                 struct qeth_ipaddr *);
  42 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  43                 struct qeth_ipaddr *);
  44
  45 int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr,
  46                              char *buf)
  47 {
  48         if (proto == QETH_PROT_IPV4)
  49                 return sprintf(buf, "%pI4", addr);
  50         else
  51                 return sprintf(buf, "%pI6", addr);
  52 }
  53
  54 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card,
  55                                                    struct qeth_ipaddr *query)
  56 {
  57         u32 key = qeth_l3_ipaddr_hash(query);
  58         struct qeth_ipaddr *addr;
  59
  60         if (query->is_multicast) {
  61                 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key)
  62                         if (qeth_l3_addr_match_ip(addr, query))
  63                                 return addr;
  64         } else {
  65                 hash_for_each_possible(card->ip_htable,  addr, hnode, key)
  66                         if (qeth_l3_addr_match_ip(addr, query))
  67                                 return addr;
  68         }
  69         return NULL;
  70 }
  71
  72 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
  73 {
  74         int i, j;
  75         u8 octet;
  76
  77         for (i = 0; i < len; ++i) {
  78                 octet = addr[i];
  79                 for (j = 7; j >= 0; --j) {
  80                         bits[i*8 + j] = octet & 1;
  81                         octet >>= 1;
  82                 }
  83         }
  84 }
  85
  86 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
  87                                              struct qeth_ipaddr *addr)
  88 {
  89         struct qeth_ipato_entry *ipatoe;
  90         u8 addr_bits[128] = {0, };
  91         u8 ipatoe_bits[128] = {0, };
  92         int rc = 0;
  93
  94         if (!card->ipato.enabled)
  95                 return false;
  96         if (addr->type != QETH_IP_TYPE_NORMAL)
  97                 return false;
  98
  99         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 100                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 101         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 102                 if (addr->proto != ipatoe->proto)
 103                         continue;
 104                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 105                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 106                                           4 : 16);
 107                 if (addr->proto == QETH_PROT_IPV4)
 108                         rc = !memcmp(addr_bits, ipatoe_bits,
 109                                      min(32, ipatoe->mask_bits));
 110                 else
 111                         rc = !memcmp(addr_bits, ipatoe_bits,
 112                                      min(128, ipatoe->mask_bits));
 113                 if (rc)
 114                         break;
 115         }
 116         /* invert? */
 117         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 118                 rc = !rc;
 119         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 120                 rc = !rc;
 121
 122         return rc;
 123 }
 124
 125 static int qeth_l3_delete_ip(struct qeth_card *card,
 126                              struct qeth_ipaddr *tmp_addr)
 127 {
 128         int rc = 0;
 129         struct qeth_ipaddr *addr;
 130
 131         if (tmp_addr->type == QETH_IP_TYPE_RXIP)
 132                 QETH_CARD_TEXT(card, 2, "delrxip");
 133         else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
 134                 QETH_CARD_TEXT(card, 2, "delvipa");
 135         else
 136                 QETH_CARD_TEXT(card, 2, "delip");
 137
 138         if (tmp_addr->proto == QETH_PROT_IPV4)
 139                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 140         else {
 141                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 142                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 143         }
 144
 145         addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
 146         if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr))
 147                 return -ENOENT;
 148
 149         addr->ref_counter--;
 150         if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
 151                 return rc;
 152
 153         if (qeth_card_hw_is_reachable(card))
 154                 rc = qeth_l3_deregister_addr_entry(card, addr);
 155
 156         hash_del(&addr->hnode);
 157         kfree(addr);
 158
 159         return rc;
 160 }
 161
 162 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 163 {
 164         int rc = 0;
 165         struct qeth_ipaddr *addr;
 166         char buf[40];
 167
 168         if (tmp_addr->type == QETH_IP_TYPE_RXIP)
 169                 QETH_CARD_TEXT(card, 2, "addrxip");
 170         else if (tmp_addr->type == QETH_IP_TYPE_VIPA)
 171                 QETH_CARD_TEXT(card, 2, "addvipa");
 172         else
 173                 QETH_CARD_TEXT(card, 2, "addip");
 174
 175         if (tmp_addr->proto == QETH_PROT_IPV4)
 176                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 177         else {
 178                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 179                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 180         }
 181
 182         addr = qeth_l3_find_addr_by_ip(card, tmp_addr);
 183         if (addr) {
 184                 if (tmp_addr->type != QETH_IP_TYPE_NORMAL)
 185                         return -EADDRINUSE;
 186                 if (qeth_l3_addr_match_all(addr, tmp_addr)) {
 187                         addr->ref_counter++;
 188                         return 0;
 189                 }
 190                 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u,
 191                                          buf);
 192                 dev_warn(&card->gdev->dev,
 193                          "Registering IP address %s failed\n", buf);
 194                 return -EADDRINUSE;
 195         } else {
 196                 addr = kmemdup(tmp_addr, sizeof(*tmp_addr), GFP_KERNEL);
 197                 if (!addr)
 198                         return -ENOMEM;
 199
 200                 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 201                         QETH_CARD_TEXT(card, 2, "tkovaddr");
 202                         addr->ipato = 1;
 203                 }
 204                 hash_add(card->ip_htable, &addr->hnode,
 205                                 qeth_l3_ipaddr_hash(addr));
 206
 207                 if (!qeth_card_hw_is_reachable(card)) {
 208                         addr->disp_flag = QETH_DISP_ADDR_ADD;
 209                         return 0;
 210                 }
 211
 212                 rc = qeth_l3_register_addr_entry(card, addr);
 213
 214                 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) {
 215                         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 216                 } else {
 217                         hash_del(&addr->hnode);
 218                         kfree(addr);
 219                 }
 220         }
 221         return rc;
 222 }
 223
 224 static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr,
 225                              bool add)
 226 {
 227         int rc;
 228
 229         mutex_lock(&card->ip_lock);
 230         rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr);
 231         mutex_unlock(&card->ip_lock);
 232
 233         return rc;
 234 }
 235
 236 static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card)
 237 {
 238         struct qeth_ipaddr *addr;
 239         struct hlist_node *tmp;
 240         int i;
 241
 242         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
 243                 hash_del(&addr->hnode);
 244                 kfree(addr);
 245         }
 246 }
 247
 248 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 249 {
 250         struct qeth_ipaddr *addr;
 251         struct hlist_node *tmp;
 252         int i;
 253
 254         QETH_CARD_TEXT(card, 4, "clearip");
 255
 256         mutex_lock(&card->ip_lock);
 257
 258         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 259                 if (!recover) {
 260                         hash_del(&addr->hnode);
 261                         kfree(addr);
 262                         continue;
 263                 }
 264                 addr->disp_flag = QETH_DISP_ADDR_ADD;
 265         }
 266
 267         mutex_unlock(&card->ip_lock);
 268 }
 269
 270 static void qeth_l3_recover_ip(struct qeth_card *card)
 271 {
 272         struct qeth_ipaddr *addr;
 273         struct hlist_node *tmp;
 274         int i;
 275         int rc;
 276
 277         QETH_CARD_TEXT(card, 4, "recovrip");
 278
 279         mutex_lock(&card->ip_lock);
 280
 281         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 282                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
 283                         rc = qeth_l3_register_addr_entry(card, addr);
 284
 285                         if (!rc) {
 286                                 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 287                         } else {
 288                                 hash_del(&addr->hnode);
 289                                 kfree(addr);
 290                         }
 291                 }
 292         }
 293
 294         mutex_unlock(&card->ip_lock);
 295 }
 296
 297 static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply,
 298                                unsigned long data)
 299 {
 300         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
 301
 302         switch (cmd->hdr.return_code) {
 303         case IPA_RC_SUCCESS:
 304                 return 0;
 305         case IPA_RC_DUPLICATE_IP_ADDRESS:
 306                 return -EADDRINUSE;
 307         case IPA_RC_MC_ADDR_NOT_FOUND:
 308                 return -ENOENT;
 309         case IPA_RC_LAN_OFFLINE:
 310                 return -ENETDOWN;
 311         default:
 312                 return -EIO;
 313         }
 314 }
 315
 316 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 317                         struct qeth_ipaddr *addr, int ipacmd)
 318 {
 319         struct qeth_cmd_buffer *iob;
 320         struct qeth_ipa_cmd *cmd;
 321
 322         QETH_CARD_TEXT(card, 4, "setdelmc");
 323
 324         iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
 325                                  IPA_DATA_SIZEOF(setdelipm));
 326         if (!iob)
 327                 return -ENOMEM;
 328         cmd = __ipa_cmd(iob);
 329         if (addr->proto == QETH_PROT_IPV6) {
 330                 cmd->data.setdelipm.ip = addr->u.a6.addr;
 331                 ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac);
 332         } else {
 333                 cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr;
 334                 ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac);
 335         }
 336
 337         return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
 338 }
 339
 340 static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len)
 341 {
 342         unsigned int i = 0;
 343
 344         while (len && i < 4) {
 345                 int mask_len = min_t(int, len, 32);
 346
 347                 prefix->s6_addr32[i] = inet_make_mask(mask_len);
 348                 len -= mask_len;
 349                 i++;
 350         }
 351 }
 352
 353 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set)
 354 {
 355         switch (addr->type) {
 356         case QETH_IP_TYPE_RXIP:
 357                 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
 358         case QETH_IP_TYPE_VIPA:
 359                 return (set) ? QETH_IPA_SETIP_VIPA_FLAG :
 360                                QETH_IPA_DELIP_VIPA_FLAG;
 361         default:
 362                 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0;
 363         }
 364 }
 365
 366 static int qeth_l3_send_setdelip(struct qeth_card *card,
 367                                  struct qeth_ipaddr *addr,
 368                                  enum qeth_ipa_cmds ipacmd)
 369 {
 370         struct qeth_cmd_buffer *iob;
 371         struct qeth_ipa_cmd *cmd;
 372         u32 flags;
 373
 374         QETH_CARD_TEXT(card, 4, "setdelip");
 375
 376         iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto,
 377                                  IPA_DATA_SIZEOF(setdelip6));
 378         if (!iob)
 379                 return -ENOMEM;
 380         cmd = __ipa_cmd(iob);
 381
 382         flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP);
 383         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 384
 385         if (addr->proto == QETH_PROT_IPV6) {
 386                 cmd->data.setdelip6.addr = addr->u.a6.addr;
 387                 qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix,
 388                                         addr->u.a6.pfxlen);
 389                 cmd->data.setdelip6.flags = flags;
 390         } else {
 391                 cmd->data.setdelip4.addr = addr->u.a4.addr;
 392                 cmd->data.setdelip4.mask = addr->u.a4.mask;
 393                 cmd->data.setdelip4.flags = flags;
 394         }
 395
 396         return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL);
 397 }
 398
 399 static int qeth_l3_send_setrouting(struct qeth_card *card,
 400         enum qeth_routing_types type, enum qeth_prot_versions prot)
 401 {
 402         int rc;
 403         struct qeth_ipa_cmd *cmd;
 404         struct qeth_cmd_buffer *iob;
 405
 406         QETH_CARD_TEXT(card, 4, "setroutg");
 407         iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot,
 408                                  IPA_DATA_SIZEOF(setrtg));
 409         if (!iob)
 410                 return -ENOMEM;
 411         cmd = __ipa_cmd(iob);
 412         cmd->data.setrtg.type = (type);
 413         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 414
 415         return rc;
 416 }
 417
 418 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 419                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 420 {
 421         if (IS_IQD(card)) {
 422                 switch (*type) {
 423                 case NO_ROUTER:
 424                 case PRIMARY_CONNECTOR:
 425                 case SECONDARY_CONNECTOR:
 426                 case MULTICAST_ROUTER:
 427                         return 0;
 428                 default:
 429                         goto out_inval;
 430                 }
 431         } else {
 432                 switch (*type) {
 433                 case NO_ROUTER:
 434                 case PRIMARY_ROUTER:
 435                 case SECONDARY_ROUTER:
 436                         return 0;
 437                 case MULTICAST_ROUTER:
 438                         if (qeth_is_ipafunc_supported(card, prot,
 439                                                       IPA_OSA_MC_ROUTER))
 440                                 return 0;
 441                 default:
 442                         goto out_inval;
 443                 }
 444         }
 445 out_inval:
 446         *type = NO_ROUTER;
 447         return -EINVAL;
 448 }
 449
 450 int qeth_l3_setrouting_v4(struct qeth_card *card)
 451 {
 452         int rc;
 453
 454         QETH_CARD_TEXT(card, 3, "setrtg4");
 455
 456         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 457                                   QETH_PROT_IPV4);
 458         if (rc)
 459                 return rc;
 460
 461         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 462                                   QETH_PROT_IPV4);
 463         if (rc) {
 464                 card->options.route4.type = NO_ROUTER;
 465                 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
 466                                  rc, CARD_DEVID(card));
 467         }
 468         return rc;
 469 }
 470
 471 int qeth_l3_setrouting_v6(struct qeth_card *card)
 472 {
 473         int rc = 0;
 474
 475         QETH_CARD_TEXT(card, 3, "setrtg6");
 476
 477         if (!qeth_is_supported(card, IPA_IPV6))
 478                 return 0;
 479         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 480                                   QETH_PROT_IPV6);
 481         if (rc)
 482                 return rc;
 483
 484         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 485                                   QETH_PROT_IPV6);
 486         if (rc) {
 487                 card->options.route6.type = NO_ROUTER;
 488                 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n",
 489                                  rc, CARD_DEVID(card));
 490         }
 491         return rc;
 492 }
 493
 494 /*
 495  * IP address takeover related functions
 496  */
 497
 498 /**
 499  * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs.
 500  *
 501  * Caller must hold ip_lock.
 502  */
 503 void qeth_l3_update_ipato(struct qeth_card *card)
 504 {
 505         struct qeth_ipaddr *addr;
 506         unsigned int i;
 507
 508         hash_for_each(card->ip_htable, i, addr, hnode) {
 509                 if (addr->type != QETH_IP_TYPE_NORMAL)
 510                         continue;
 511                 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr);
 512         }
 513 }
 514
 515 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 516 {
 517         struct qeth_ipato_entry *ipatoe, *tmp;
 518
 519         mutex_lock(&card->ip_lock);
 520
 521         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 522                 list_del(&ipatoe->entry);
 523                 kfree(ipatoe);
 524         }
 525
 526         qeth_l3_update_ipato(card);
 527         mutex_unlock(&card->ip_lock);
 528 }
 529
 530 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 531                                 struct qeth_ipato_entry *new)
 532 {
 533         struct qeth_ipato_entry *ipatoe;
 534         int rc = 0;
 535
 536         QETH_CARD_TEXT(card, 2, "addipato");
 537
 538         mutex_lock(&card->conf_mutex);
 539         mutex_lock(&card->ip_lock);
 540
 541         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 542                 if (ipatoe->proto != new->proto)
 543                         continue;
 544                 if (!memcmp(ipatoe->addr, new->addr,
 545                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 546                     (ipatoe->mask_bits == new->mask_bits)) {
 547                         rc = -EEXIST;
 548                         break;
 549                 }
 550         }
 551
 552         if (!rc) {
 553                 list_add_tail(&new->entry, &card->ipato.entries);
 554                 qeth_l3_update_ipato(card);
 555         }
 556
 557         mutex_unlock(&card->ip_lock);
 558         mutex_unlock(&card->conf_mutex);
 559
 560         return rc;
 561 }
 562
 563 int qeth_l3_del_ipato_entry(struct qeth_card *card,
 564                             enum qeth_prot_versions proto, u8 *addr,
 565                             int mask_bits)
 566 {
 567         struct qeth_ipato_entry *ipatoe, *tmp;
 568         int rc = -ENOENT;
 569
 570         QETH_CARD_TEXT(card, 2, "delipato");
 571
 572         mutex_lock(&card->conf_mutex);
 573         mutex_lock(&card->ip_lock);
 574
 575         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 576                 if (ipatoe->proto != proto)
 577                         continue;
 578                 if (!memcmp(ipatoe->addr, addr,
 579                             (proto == QETH_PROT_IPV4)? 4:16) &&
 580                     (ipatoe->mask_bits == mask_bits)) {
 581                         list_del(&ipatoe->entry);
 582                         qeth_l3_update_ipato(card);
 583                         kfree(ipatoe);
 584                         rc = 0;
 585                 }
 586         }
 587
 588         mutex_unlock(&card->ip_lock);
 589         mutex_unlock(&card->conf_mutex);
 590
 591         return rc;
 592 }
 593
 594 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
 595                              enum qeth_ip_types type,
 596                              enum qeth_prot_versions proto)
 597 {
 598         struct qeth_ipaddr addr;
 599         int rc;
 600
 601         qeth_l3_init_ipaddr(&addr, type, proto);
 602         if (proto == QETH_PROT_IPV4)
 603                 memcpy(&addr.u.a4.addr, ip, 4);
 604         else
 605                 memcpy(&addr.u.a6.addr, ip, 16);
 606
 607         mutex_lock(&card->conf_mutex);
 608         rc = qeth_l3_modify_ip(card, &addr, add);
 609         mutex_unlock(&card->conf_mutex);
 610
 611         return rc;
 612 }
 613
 614 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add)
 615 {
 616         struct qeth_ipaddr addr;
 617         unsigned int i;
 618
 619         qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
 620         addr.u.a6.addr.s6_addr[0] = 0xfe;
 621         addr.u.a6.addr.s6_addr[1] = 0x80;
 622         for (i = 0; i < 8; i++)
 623                 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i];
 624
 625         return qeth_l3_modify_ip(card, &addr, add);
 626 }
 627
 628 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 629                                 struct qeth_ipaddr *addr)
 630 {
 631         char buf[50];
 632         int rc = 0;
 633         int cnt = 3;
 634
 635         if (card->options.sniffer)
 636                 return 0;
 637
 638         if (addr->proto == QETH_PROT_IPV4) {
 639                 QETH_CARD_TEXT(card, 2, "setaddr4");
 640                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 641         } else if (addr->proto == QETH_PROT_IPV6) {
 642                 QETH_CARD_TEXT(card, 2, "setaddr6");
 643                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 644                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 645         } else {
 646                 QETH_CARD_TEXT(card, 2, "setaddr?");
 647                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 648         }
 649         do {
 650                 if (addr->is_multicast)
 651                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 652                 else
 653                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP);
 654                 if (rc)
 655                         QETH_CARD_TEXT(card, 2, "failed");
 656         } while ((--cnt > 0) && rc);
 657         if (rc) {
 658                 QETH_CARD_TEXT(card, 2, "FAILED");
 659                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 660                 dev_warn(&card->gdev->dev,
 661                         "Registering IP address %s failed\n", buf);
 662         }
 663         return rc;
 664 }
 665
 666 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 667                                                 struct qeth_ipaddr *addr)
 668 {
 669         int rc = 0;
 670
 671         if (card->options.sniffer)
 672                 return 0;
 673
 674         if (addr->proto == QETH_PROT_IPV4) {
 675                 QETH_CARD_TEXT(card, 2, "deladdr4");
 676                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 677         } else if (addr->proto == QETH_PROT_IPV6) {
 678                 QETH_CARD_TEXT(card, 2, "deladdr6");
 679                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 680                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 681         } else {
 682                 QETH_CARD_TEXT(card, 2, "deladdr?");
 683                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 684         }
 685         if (addr->is_multicast)
 686                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 687         else
 688                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP);
 689         if (rc)
 690                 QETH_CARD_TEXT(card, 2, "failed");
 691
 692         return rc;
 693 }
 694
 695 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 696 {
 697         int rc = 0;
 698
 699         QETH_CARD_TEXT(card, 2, "setadprm");
 700
 701         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 702                 rc = qeth_setadpparms_change_macaddr(card);
 703                 if (rc)
 704                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
 705                                 " address failed\n");
 706         }
 707
 708         return rc;
 709 }
 710
 711 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
 712 {
 713         int rc;
 714
 715         QETH_CARD_TEXT(card, 3, "ipaarp");
 716
 717         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 718                 dev_info(&card->gdev->dev,
 719                         "ARP processing not supported on %s!\n",
 720                         QETH_CARD_IFNAME(card));
 721                 return 0;
 722         }
 723         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
 724                                           IPA_CMD_ASS_START, NULL);
 725         if (rc) {
 726                 dev_warn(&card->gdev->dev,
 727                         "Starting ARP processing support for %s failed\n",
 728                         QETH_CARD_IFNAME(card));
 729         }
 730         return rc;
 731 }
 732
 733 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
 734 {
 735         int rc;
 736
 737         QETH_CARD_TEXT(card, 3, "stsrcmac");
 738
 739         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
 740                 dev_info(&card->gdev->dev,
 741                         "Inbound source MAC-address not supported on %s\n",
 742                         QETH_CARD_IFNAME(card));
 743                 return -EOPNOTSUPP;
 744         }
 745
 746         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
 747                                           IPA_CMD_ASS_START, NULL);
 748         if (rc)
 749                 dev_warn(&card->gdev->dev,
 750                         "Starting source MAC-address support for %s failed\n",
 751                         QETH_CARD_IFNAME(card));
 752         return rc;
 753 }
 754
 755 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
 756 {
 757         int rc = 0;
 758
 759         QETH_CARD_TEXT(card, 3, "strtvlan");
 760
 761         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
 762                 dev_info(&card->gdev->dev,
 763                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
 764                 return -EOPNOTSUPP;
 765         }
 766
 767         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
 768                                           IPA_CMD_ASS_START, NULL);
 769         if (rc) {
 770                 dev_warn(&card->gdev->dev,
 771                         "Starting VLAN support for %s failed\n",
 772                         QETH_CARD_IFNAME(card));
 773         } else {
 774                 dev_info(&card->gdev->dev, "VLAN enabled\n");
 775         }
 776         return rc;
 777 }
 778
 779 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
 780 {
 781         int rc;
 782
 783         QETH_CARD_TEXT(card, 3, "stmcast");
 784
 785         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
 786                 dev_info(&card->gdev->dev,
 787                         "Multicast not supported on %s\n",
 788                         QETH_CARD_IFNAME(card));
 789                 return -EOPNOTSUPP;
 790         }
 791
 792         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
 793                                           IPA_CMD_ASS_START, NULL);
 794         if (rc) {
 795                 dev_warn(&card->gdev->dev,
 796                         "Starting multicast support for %s failed\n",
 797                         QETH_CARD_IFNAME(card));
 798         } else {
 799                 dev_info(&card->gdev->dev, "Multicast enabled\n");
 800                 card->dev->flags |= IFF_MULTICAST;
 801         }
 802         return rc;
 803 }
 804
 805 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
 806 {
 807         u32 ipv6_data = 3;
 808         int rc;
 809
 810         QETH_CARD_TEXT(card, 3, "softipv6");
 811
 812         if (IS_IQD(card))
 813                 goto out;
 814
 815         rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START,
 816                                           &ipv6_data);
 817         if (rc) {
 818                 dev_err(&card->gdev->dev,
 819                         "Activating IPv6 support for %s failed\n",
 820                         QETH_CARD_IFNAME(card));
 821                 return rc;
 822         }
 823         rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START,
 824                                              NULL);
 825         if (rc) {
 826                 dev_err(&card->gdev->dev,
 827                         "Activating IPv6 support for %s failed\n",
 828                          QETH_CARD_IFNAME(card));
 829                 return rc;
 830         }
 831         rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU,
 832                                              IPA_CMD_ASS_START, NULL);
 833         if (rc) {
 834                 dev_warn(&card->gdev->dev,
 835                         "Enabling the passthrough mode for %s failed\n",
 836                         QETH_CARD_IFNAME(card));
 837                 return rc;
 838         }
 839 out:
 840         dev_info(&card->gdev->dev, "IPV6 enabled\n");
 841         return 0;
 842 }
 843
 844 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
 845 {
 846         QETH_CARD_TEXT(card, 3, "strtipv6");
 847
 848         if (!qeth_is_supported(card, IPA_IPV6)) {
 849                 dev_info(&card->gdev->dev,
 850                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
 851                 return 0;
 852         }
 853         return qeth_l3_softsetup_ipv6(card);
 854 }
 855
 856 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
 857 {
 858         u32 filter_data = 1;
 859         int rc;
 860
 861         QETH_CARD_TEXT(card, 3, "stbrdcst");
 862         card->info.broadcast_capable = 0;
 863         if (!qeth_is_supported(card, IPA_FILTERING)) {
 864                 dev_info(&card->gdev->dev,
 865                         "Broadcast not supported on %s\n",
 866                         QETH_CARD_IFNAME(card));
 867                 rc = -EOPNOTSUPP;
 868                 goto out;
 869         }
 870         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
 871                                           IPA_CMD_ASS_START, NULL);
 872         if (rc) {
 873                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
 874                         "%s failed\n", QETH_CARD_IFNAME(card));
 875                 goto out;
 876         }
 877
 878         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
 879                                           IPA_CMD_ASS_CONFIGURE, &filter_data);
 880         if (rc) {
 881                 dev_warn(&card->gdev->dev,
 882                         "Setting up broadcast filtering for %s failed\n",
 883                         QETH_CARD_IFNAME(card));
 884                 goto out;
 885         }
 886         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
 887         dev_info(&card->gdev->dev, "Broadcast enabled\n");
 888         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
 889                                           IPA_CMD_ASS_ENABLE, &filter_data);
 890         if (rc) {
 891                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
 892                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
 893                 goto out;
 894         }
 895         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
 896 out:
 897         if (card->info.broadcast_capable)
 898                 card->dev->flags |= IFF_BROADCAST;
 899         else
 900                 card->dev->flags &= ~IFF_BROADCAST;
 901         return rc;
 902 }
 903
 904 static void qeth_l3_start_ipassists(struct qeth_card *card)
 905 {
 906         QETH_CARD_TEXT(card, 3, "strtipas");
 907
 908         qeth_l3_start_ipa_arp_processing(card); /* go on*/
 909         qeth_l3_start_ipa_source_mac(card);     /* go on*/
 910         qeth_l3_start_ipa_vlan(card);           /* go on*/
 911         qeth_l3_start_ipa_multicast(card);              /* go on*/
 912         qeth_l3_start_ipa_ipv6(card);           /* go on*/
 913         qeth_l3_start_ipa_broadcast(card);              /* go on*/
 914 }
 915
 916 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
 917                 struct qeth_reply *reply, unsigned long data)
 918 {
 919         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
 920
 921         if (cmd->hdr.return_code)
 922                 return -EIO;
 923
 924         ether_addr_copy(card->dev->dev_addr,
 925                         cmd->data.create_destroy_addr.unique_id);
 926         return 0;
 927 }
 928
 929 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
 930 {
 931         int rc = 0;
 932         struct qeth_cmd_buffer *iob;
 933         struct qeth_ipa_cmd *cmd;
 934
 935         QETH_CARD_TEXT(card, 2, "hsrmac");
 936
 937         iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
 938                                  IPA_DATA_SIZEOF(create_destroy_addr));
 939         if (!iob)
 940                 return -ENOMEM;
 941         cmd = __ipa_cmd(iob);
 942         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
 943                         card->info.unique_id;
 944
 945         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
 946                                 NULL);
 947         return rc;
 948 }
 949
 950 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
 951                 struct qeth_reply *reply, unsigned long data)
 952 {
 953         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
 954
 955         if (cmd->hdr.return_code == 0) {
 956                 card->info.unique_id = *((__u16 *)
 957                                 &cmd->data.create_destroy_addr.unique_id[6]);
 958                 return 0;
 959         }
 960
 961         card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED |
 962                                UNIQUE_ID_NOT_BY_CARD;
 963         dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n");
 964         return -EIO;
 965 }
 966
 967 static int qeth_l3_get_unique_id(struct qeth_card *card)
 968 {
 969         int rc = 0;
 970         struct qeth_cmd_buffer *iob;
 971         struct qeth_ipa_cmd *cmd;
 972
 973         QETH_CARD_TEXT(card, 2, "guniqeid");
 974
 975         if (!qeth_is_supported(card, IPA_IPV6)) {
 976                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
 977                                         UNIQUE_ID_NOT_BY_CARD;
 978                 return 0;
 979         }
 980
 981         iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6,
 982                                  IPA_DATA_SIZEOF(create_destroy_addr));
 983         if (!iob)
 984                 return -ENOMEM;
 985         cmd = __ipa_cmd(iob);
 986         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
 987                         card->info.unique_id;
 988
 989         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
 990         return rc;
 991 }
 992
 993 static int
 994 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
 995                             unsigned long data)
 996 {
 997         struct qeth_ipa_cmd        *cmd;
 998         __u16 rc;
 999
1000         QETH_CARD_TEXT(card, 2, "diastrcb");
1001
1002         cmd = (struct qeth_ipa_cmd *)data;
1003         rc = cmd->hdr.return_code;
1004         if (rc)
1005                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1006         switch (cmd->data.diagass.action) {
1007         case QETH_DIAGS_CMD_TRACE_QUERY:
1008                 break;
1009         case QETH_DIAGS_CMD_TRACE_DISABLE:
1010                 switch (rc) {
1011                 case 0:
1012                 case IPA_RC_INVALID_SUBCMD:
1013                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1014                         dev_info(&card->gdev->dev, "The HiperSockets network "
1015                                 "traffic analyzer is deactivated\n");
1016                         break;
1017                 default:
1018                         break;
1019                 }
1020                 break;
1021         case QETH_DIAGS_CMD_TRACE_ENABLE:
1022                 switch (rc) {
1023                 case 0:
1024                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1025                         dev_info(&card->gdev->dev, "The HiperSockets network "
1026                                 "traffic analyzer is activated\n");
1027                         break;
1028                 case IPA_RC_HARDWARE_AUTH_ERROR:
1029                         dev_warn(&card->gdev->dev, "The device is not "
1030                                 "authorized to run as a HiperSockets network "
1031                                 "traffic analyzer\n");
1032                         break;
1033                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1034                         dev_warn(&card->gdev->dev, "A HiperSockets "
1035                                 "network traffic analyzer is already "
1036                                 "active in the HiperSockets LAN\n");
1037                         break;
1038                 default:
1039                         break;
1040                 }
1041                 break;
1042         default:
1043                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n",
1044                                  cmd->data.diagass.action, CARD_DEVID(card));
1045         }
1046
1047         return rc ? -EIO : 0;
1048 }
1049
1050 static int
1051 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1052 {
1053         struct qeth_cmd_buffer *iob;
1054         struct qeth_ipa_cmd    *cmd;
1055
1056         QETH_CARD_TEXT(card, 2, "diagtrac");
1057
1058         iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0);
1059         if (!iob)
1060                 return -ENOMEM;
1061         cmd = __ipa_cmd(iob);
1062         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1063         cmd->data.diagass.action = diags_cmd;
1064         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1065 }
1066
1067 static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg)
1068 {
1069         struct qeth_card *card = arg;
1070         struct inet6_dev *in6_dev;
1071         struct in_device *in4_dev;
1072         struct qeth_ipaddr *ipm;
1073         struct qeth_ipaddr tmp;
1074         struct ip_mc_list *im4;
1075         struct ifmcaddr6 *im6;
1076
1077         QETH_CARD_TEXT(card, 4, "addmc");
1078
1079         if (!dev || !(dev->flags & IFF_UP))
1080                 goto out;
1081
1082         in4_dev = __in_dev_get_rtnl(dev);
1083         if (!in4_dev)
1084                 goto walk_ipv6;
1085
1086         qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
1087         tmp.disp_flag = QETH_DISP_ADDR_ADD;
1088         tmp.is_multicast = 1;
1089
1090         for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL;
1091              im4 = rtnl_dereference(im4->next_rcu)) {
1092                 tmp.u.a4.addr = im4->multiaddr;
1093
1094                 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1095                 if (ipm) {
1096                         /* for mcast, by-IP match means full match */
1097                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1098                         continue;
1099                 }
1100
1101                 ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL);
1102                 if (!ipm)
1103                         continue;
1104
1105                 hash_add(card->ip_mc_htable, &ipm->hnode,
1106                          qeth_l3_ipaddr_hash(ipm));
1107         }
1108
1109 walk_ipv6:
1110         if (!qeth_is_supported(card, IPA_IPV6))
1111                 goto out;
1112
1113         in6_dev = __in6_dev_get(dev);
1114         if (!in6_dev)
1115                 goto out;
1116
1117         qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6);
1118         tmp.disp_flag = QETH_DISP_ADDR_ADD;
1119         tmp.is_multicast = 1;
1120
1121         read_lock_bh(&in6_dev->lock);
1122         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1123                 tmp.u.a6.addr = im6->mca_addr;
1124
1125                 ipm = qeth_l3_find_addr_by_ip(card, &tmp);
1126                 if (ipm) {
1127                         /* for mcast, by-IP match means full match */
1128                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1129                         continue;
1130                 }
1131
1132                 ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC);
1133                 if (!ipm)
1134                         continue;
1135
1136                 hash_add(card->ip_mc_htable,
1137                                 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1138
1139         }
1140         read_unlock_bh(&in6_dev->lock);
1141
1142 out:
1143         return 0;
1144 }
1145
1146 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1147                                    __be16 proto, u16 vid)
1148 {
1149         struct qeth_card *card = dev->ml_priv;
1150
1151         QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
1152         return 0;
1153 }
1154
1155 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1156                                     __be16 proto, u16 vid)
1157 {
1158         struct qeth_card *card = dev->ml_priv;
1159
1160         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1161         return 0;
1162 }
1163
1164 static void qeth_l3_stop_card(struct qeth_card *card)
1165 {
1166         QETH_CARD_TEXT(card, 2, "stopcard");
1167
1168         qeth_set_allowed_threads(card, 0, 1);
1169
1170         cancel_work_sync(&card->rx_mode_work);
1171         qeth_l3_drain_rx_mode_cache(card);
1172
1173         if (card->options.sniffer &&
1174             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1175                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1176
1177         if (card->state == CARD_STATE_SOFTSETUP) {
1178                 qeth_l3_clear_ip_htable(card, 1);
1179                 qeth_clear_ipacmd_list(card);
1180                 qeth_drain_output_queues(card);
1181                 cancel_delayed_work_sync(&card->buffer_reclaim_work);
1182                 card->state = CARD_STATE_DOWN;
1183         }
1184
1185         qeth_qdio_clear_card(card, 0);
1186         qeth_clear_working_pool_list(card);
1187         flush_workqueue(card->event_wq);
1188         card->info.promisc_mode = 0;
1189 }
1190
1191 static void qeth_l3_set_promisc_mode(struct qeth_card *card)
1192 {
1193         bool enable = card->dev->flags & IFF_PROMISC;
1194
1195         if (card->info.promisc_mode == enable)
1196                 return;
1197
1198         if (IS_VM_NIC(card)) {          /* Guestlan trace */
1199                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1200                         qeth_setadp_promisc_mode(card, enable);
1201         } else if (card->options.sniffer &&     /* HiperSockets trace */
1202                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1203                 if (enable) {
1204                         QETH_CARD_TEXT(card, 3, "+promisc");
1205                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1206                 } else {
1207                         QETH_CARD_TEXT(card, 3, "-promisc");
1208                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1209                 }
1210         }
1211 }
1212
1213 static void qeth_l3_rx_mode_work(struct work_struct *work)
1214 {
1215         struct qeth_card *card = container_of(work, struct qeth_card,
1216                                               rx_mode_work);
1217         struct qeth_ipaddr *addr;
1218         struct hlist_node *tmp;
1219         int i, rc;
1220
1221         QETH_CARD_TEXT(card, 3, "setmulti");
1222
1223         if (!card->options.sniffer) {
1224                 rtnl_lock();
1225                 qeth_l3_add_mcast_rtnl(card->dev, 0, card);
1226                 if (qeth_is_supported(card, IPA_FULL_VLAN))
1227                         vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card);
1228                 rtnl_unlock();
1229
1230                 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1231                         switch (addr->disp_flag) {
1232                         case QETH_DISP_ADDR_DELETE:
1233                                 rc = qeth_l3_deregister_addr_entry(card, addr);
1234                                 if (!rc || rc == -ENOENT) {
1235                                         hash_del(&addr->hnode);
1236                                         kfree(addr);
1237                                 }
1238                                 break;
1239                         case QETH_DISP_ADDR_ADD:
1240                                 rc = qeth_l3_register_addr_entry(card, addr);
1241                                 if (rc && rc != -ENETDOWN) {
1242                                         hash_del(&addr->hnode);
1243                                         kfree(addr);
1244                                         break;
1245                                 }
1246                                 addr->ref_counter = 1;
1247                                 /* fall through */
1248                         default:
1249                                 /* for next call to set_rx_mode(): */
1250                                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1251                         }
1252                 }
1253         }
1254
1255         qeth_l3_set_promisc_mode(card);
1256 }
1257
1258 static int qeth_l3_arp_makerc(u16 rc)
1259 {
1260         switch (rc) {
1261         case IPA_RC_SUCCESS:
1262                 return 0;
1263         case QETH_IPA_ARP_RC_NOTSUPP:
1264         case QETH_IPA_ARP_RC_Q_NOTSUPP:
1265                 return -EOPNOTSUPP;
1266         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1267                 return -EINVAL;
1268         case QETH_IPA_ARP_RC_Q_NO_DATA:
1269                 return -ENOENT;
1270         default:
1271                 return -EIO;
1272         }
1273 }
1274
1275 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply,
1276                               unsigned long data)
1277 {
1278         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1279
1280         qeth_setassparms_cb(card, reply, data);
1281         return qeth_l3_arp_makerc(cmd->hdr.return_code);
1282 }
1283
1284 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1285 {
1286         struct qeth_cmd_buffer *iob;
1287         int rc;
1288
1289         QETH_CARD_TEXT(card, 3, "arpstnoe");
1290
1291         /*
1292          * currently GuestLAN only supports the ARP assist function
1293          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
1294          * thus we say EOPNOTSUPP for this ARP function
1295          */
1296         if (IS_VM_NIC(card))
1297                 return -EOPNOTSUPP;
1298         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1299                 return -EOPNOTSUPP;
1300         }
1301
1302         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1303                                        IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
1304                                        SETASS_DATA_SIZEOF(flags_32bit),
1305                                        QETH_PROT_IPV4);
1306         if (!iob)
1307                 return -ENOMEM;
1308
1309         __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries;
1310         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1311         if (rc)
1312                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n",
1313                                  CARD_DEVID(card), rc);
1314         return rc;
1315 }
1316
1317 static __u32 get_arp_entry_size(struct qeth_card *card,
1318                         struct qeth_arp_query_data *qdata,
1319                         struct qeth_arp_entrytype *type, __u8 strip_entries)
1320 {
1321         __u32 rc;
1322         __u8 is_hsi;
1323
1324         is_hsi = qdata->reply_bits == 5;
1325         if (type->ip == QETHARP_IP_ADDR_V4) {
1326                 QETH_CARD_TEXT(card, 4, "arpev4");
1327                 if (strip_entries) {
1328                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
1329                                 sizeof(struct qeth_arp_qi_entry7_short);
1330                 } else {
1331                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
1332                                 sizeof(struct qeth_arp_qi_entry7);
1333                 }
1334         } else if (type->ip == QETHARP_IP_ADDR_V6) {
1335                 QETH_CARD_TEXT(card, 4, "arpev6");
1336                 if (strip_entries) {
1337                         rc = is_hsi ?
1338                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
1339                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
1340                 } else {
1341                         rc = is_hsi ?
1342                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
1343                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
1344                 }
1345         } else {
1346                 QETH_CARD_TEXT(card, 4, "arpinv");
1347                 rc = 0;
1348         }
1349
1350         return rc;
1351 }
1352
1353 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
1354 {
1355         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
1356                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
1357 }
1358
1359 static int qeth_l3_arp_query_cb(struct qeth_card *card,
1360                 struct qeth_reply *reply, unsigned long data)
1361 {
1362         struct qeth_ipa_cmd *cmd;
1363         struct qeth_arp_query_data *qdata;
1364         struct qeth_arp_query_info *qinfo;
1365         int e;
1366         int entrybytes_done;
1367         int stripped_bytes;
1368         __u8 do_strip_entries;
1369
1370         QETH_CARD_TEXT(card, 3, "arpquecb");
1371
1372         qinfo = (struct qeth_arp_query_info *) reply->param;
1373         cmd = (struct qeth_ipa_cmd *) data;
1374         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
1375         if (cmd->hdr.return_code) {
1376                 QETH_CARD_TEXT(card, 4, "arpcberr");
1377                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1378                 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1379         }
1380         if (cmd->data.setassparms.hdr.return_code) {
1381                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1382                 QETH_CARD_TEXT(card, 4, "setaperr");
1383                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
1384                 return qeth_l3_arp_makerc(cmd->hdr.return_code);
1385         }
1386         qdata = &cmd->data.setassparms.data.query_arp;
1387         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
1388
1389         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
1390         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
1391         entrybytes_done = 0;
1392         for (e = 0; e < qdata->no_entries; ++e) {
1393                 char *cur_entry;
1394                 __u32 esize;
1395                 struct qeth_arp_entrytype *etype;
1396
1397                 cur_entry = &qdata->data + entrybytes_done;
1398                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
1399                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
1400                         QETH_CARD_TEXT(card, 4, "pmis");
1401                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
1402                         break;
1403                 }
1404                 esize = get_arp_entry_size(card, qdata, etype,
1405                         do_strip_entries);
1406                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
1407                 if (!esize)
1408                         break;
1409
1410                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
1411                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC);
1412                         memset(qinfo->udata, 0, 4);
1413                         return -ENOSPC;
1414                 }
1415
1416                 memcpy(qinfo->udata + qinfo->udata_offset,
1417                         &qdata->data + entrybytes_done + stripped_bytes,
1418                         esize);
1419                 entrybytes_done += esize + stripped_bytes;
1420                 qinfo->udata_offset += esize;
1421                 ++qinfo->no_entries;
1422         }
1423         /* check if all replies received ... */
1424         if (cmd->data.setassparms.hdr.seq_no <
1425             cmd->data.setassparms.hdr.number_of_replies)
1426                 return 1;
1427         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
1428         memcpy(qinfo->udata, &qinfo->no_entries, 4);
1429         /* keep STRIP_ENTRIES flag so the user program can distinguish
1430          * stripped entries from normal ones */
1431         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
1432                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
1433         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
1434         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
1435         return 0;
1436 }
1437
1438 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
1439         enum qeth_prot_versions prot,
1440         struct qeth_arp_query_info *qinfo)
1441 {
1442         struct qeth_cmd_buffer *iob;
1443         struct qeth_ipa_cmd *cmd;
1444         int rc;
1445
1446         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
1447
1448         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1449                                        IPA_CMD_ASS_ARP_QUERY_INFO,
1450                                        SETASS_DATA_SIZEOF(query_arp), prot);
1451         if (!iob)
1452                 return -ENOMEM;
1453         cmd = __ipa_cmd(iob);
1454         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
1455         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo);
1456         if (rc)
1457                 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n",
1458                                  CARD_DEVID(card), rc);
1459         return rc;
1460 }
1461
1462 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
1463 {
1464         struct qeth_arp_query_info qinfo = {0, };
1465         int rc;
1466
1467         QETH_CARD_TEXT(card, 3, "arpquery");
1468
1469         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
1470                                IPA_ARP_PROCESSING)) {
1471                 QETH_CARD_TEXT(card, 3, "arpqnsup");
1472                 rc = -EOPNOTSUPP;
1473                 goto out;
1474         }
1475         /* get size of userspace buffer and mask_bits -> 6 bytes */
1476         if (copy_from_user(&qinfo, udata, 6)) {
1477                 rc = -EFAULT;
1478                 goto out;
1479         }
1480         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
1481         if (!qinfo.udata) {
1482                 rc = -ENOMEM;
1483                 goto out;
1484         }
1485         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
1486         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
1487         if (rc) {
1488                 if (copy_to_user(udata, qinfo.udata, 4))
1489                         rc = -EFAULT;
1490                 goto free_and_out;
1491         }
1492         if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
1493                 /* fails in case of GuestLAN QDIO mode */
1494                 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
1495         }
1496         if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
1497                 QETH_CARD_TEXT(card, 4, "qactf");
1498                 rc = -EFAULT;
1499                 goto free_and_out;
1500         }
1501         QETH_CARD_TEXT(card, 4, "qacts");
1502
1503 free_and_out:
1504         kfree(qinfo.udata);
1505 out:
1506         return rc;
1507 }
1508
1509 static int qeth_l3_arp_modify_entry(struct qeth_card *card,
1510                                     struct qeth_arp_cache_entry *entry,
1511                                     enum qeth_arp_process_subcmds arp_cmd)
1512 {
1513         struct qeth_arp_cache_entry *cmd_entry;
1514         struct qeth_cmd_buffer *iob;
1515         int rc;
1516
1517         if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY)
1518                 QETH_CARD_TEXT(card, 3, "arpadd");
1519         else
1520                 QETH_CARD_TEXT(card, 3, "arpdel");
1521
1522         /*
1523          * currently GuestLAN only supports the ARP assist function
1524          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
1525          * thus we say EOPNOTSUPP for this ARP function
1526          */
1527         if (IS_VM_NIC(card))
1528                 return -EOPNOTSUPP;
1529         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1530                 return -EOPNOTSUPP;
1531         }
1532
1533         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
1534                                        SETASS_DATA_SIZEOF(arp_entry),
1535                                        QETH_PROT_IPV4);
1536         if (!iob)
1537                 return -ENOMEM;
1538
1539         cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry;
1540         ether_addr_copy(cmd_entry->macaddr, entry->macaddr);
1541         memcpy(cmd_entry->ipaddr, entry->ipaddr, 4);
1542         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1543         if (rc)
1544                 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n",
1545                                  arp_cmd, CARD_DEVID(card), rc);
1546         return rc;
1547 }
1548
1549 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
1550 {
1551         struct qeth_cmd_buffer *iob;
1552         int rc;
1553
1554         QETH_CARD_TEXT(card, 3, "arpflush");
1555
1556         /*
1557          * currently GuestLAN only supports the ARP assist function
1558          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
1559          * thus we say EOPNOTSUPP for this ARP function
1560         */
1561         if (IS_VM_NIC(card) || IS_IQD(card))
1562                 return -EOPNOTSUPP;
1563         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1564                 return -EOPNOTSUPP;
1565         }
1566
1567         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
1568                                        IPA_CMD_ASS_ARP_FLUSH_CACHE, 0,
1569                                        QETH_PROT_IPV4);
1570         if (!iob)
1571                 return -ENOMEM;
1572
1573         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL);
1574         if (rc)
1575                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n",
1576                                  CARD_DEVID(card), rc);
1577         return rc;
1578 }
1579
1580 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1581 {
1582         struct qeth_card *card = dev->ml_priv;
1583         struct qeth_arp_cache_entry arp_entry;
1584         enum qeth_arp_process_subcmds arp_cmd;
1585         int rc = 0;
1586
1587         switch (cmd) {
1588         case SIOC_QETH_ARP_SET_NO_ENTRIES:
1589                 if (!capable(CAP_NET_ADMIN)) {
1590                         rc = -EPERM;
1591                         break;
1592                 }
1593                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
1594                 break;
1595         case SIOC_QETH_ARP_QUERY_INFO:
1596                 if (!capable(CAP_NET_ADMIN)) {
1597                         rc = -EPERM;
1598                         break;
1599                 }
1600                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
1601                 break;
1602         case SIOC_QETH_ARP_ADD_ENTRY:
1603         case SIOC_QETH_ARP_REMOVE_ENTRY:
1604                 if (!capable(CAP_NET_ADMIN))
1605                         return -EPERM;
1606                 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry)))
1607                         return -EFAULT;
1608
1609                 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ?
1610                                 IPA_CMD_ASS_ARP_ADD_ENTRY :
1611                                 IPA_CMD_ASS_ARP_REMOVE_ENTRY;
1612                 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd);
1613         case SIOC_QETH_ARP_FLUSH_CACHE:
1614                 if (!capable(CAP_NET_ADMIN)) {
1615                         rc = -EPERM;
1616                         break;
1617                 }
1618                 rc = qeth_l3_arp_flush_cache(card);
1619                 break;
1620         default:
1621                 rc = -EOPNOTSUPP;
1622         }
1623         return rc;
1624 }
1625
1626 static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst,
1627                                      int ipv)
1628 {
1629         struct neighbour *n = NULL;
1630
1631         if (dst)
1632                 n = dst_neigh_lookup_skb(dst, skb);
1633
1634         if (n) {
1635                 int cast_type = n->type;
1636
1637                 neigh_release(n);
1638                 if ((cast_type == RTN_BROADCAST) ||
1639                     (cast_type == RTN_MULTICAST) ||
1640                     (cast_type == RTN_ANYCAST))
1641                         return cast_type;
1642                 return RTN_UNICAST;
1643         }
1644
1645         /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */
1646         switch (ipv) {
1647         case 4:
1648                 if (ipv4_is_lbcast(ip_hdr(skb)->daddr))
1649                         return RTN_BROADCAST;
1650                 return ipv4_is_multicast(ip_hdr(skb)->daddr) ?
1651                                 RTN_MULTICAST : RTN_UNICAST;
1652         case 6:
1653                 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ?
1654                                 RTN_MULTICAST : RTN_UNICAST;
1655         default:
1656                 /* ... and MAC address */
1657                 return qeth_get_ether_cast_type(skb);
1658         }
1659 }
1660
1661 static int qeth_l3_get_cast_type(struct sk_buff *skb)
1662 {
1663         int ipv = qeth_get_ip_version(skb);
1664         struct dst_entry *dst;
1665         int cast_type;
1666
1667         rcu_read_lock();
1668         dst = qeth_dst_check_rcu(skb, ipv);
1669         cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
1670         rcu_read_unlock();
1671
1672         return cast_type;
1673 }
1674
1675 static u8 qeth_l3_cast_type_to_flag(int cast_type)
1676 {
1677         if (cast_type == RTN_MULTICAST)
1678                 return QETH_CAST_MULTICAST;
1679         if (cast_type == RTN_ANYCAST)
1680                 return QETH_CAST_ANYCAST;
1681         if (cast_type == RTN_BROADCAST)
1682                 return QETH_CAST_BROADCAST;
1683         return QETH_CAST_UNICAST;
1684 }
1685
1686 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue,
1687                                 struct qeth_hdr *hdr, struct sk_buff *skb,
1688                                 int ipv, unsigned int data_len)
1689 {
1690         struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3;
1691         struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
1692         struct qeth_card *card = queue->card;
1693         struct dst_entry *dst;
1694         int cast_type;
1695
1696         hdr->hdr.l3.length = data_len;
1697
1698         if (skb_is_gso(skb)) {
1699                 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO;
1700         } else {
1701                 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
1702
1703                 if (skb->protocol == htons(ETH_P_AF_IUCV)) {
1704                         l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
1705                         l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80);
1706                         memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2],
1707                                iucv_trans_hdr(skb)->destUserID, 8);
1708                         return;
1709                 }
1710
1711                 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1712                         qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv);
1713                         /* some HW requires combined L3+L4 csum offload: */
1714                         if (ipv == 4)
1715                                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
1716                 }
1717         }
1718
1719         if (ipv == 4 || IS_IQD(card)) {
1720                 /* NETIF_F_HW_VLAN_CTAG_TX */
1721                 if (skb_vlan_tag_present(skb)) {
1722                         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME;
1723                         hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
1724                 }
1725         } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) {
1726                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG;
1727                 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI);
1728         }
1729
1730         rcu_read_lock();
1731         dst = qeth_dst_check_rcu(skb, ipv);
1732
1733         if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ)
1734                 cast_type = RTN_UNICAST;
1735         else
1736                 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv);
1737         l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type);
1738
1739         if (ipv == 4) {
1740                 struct rtable *rt = (struct rtable *) dst;
1741
1742                 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ?
1743                                 rt_nexthop(rt, ip_hdr(skb)->daddr) :
1744                                 ip_hdr(skb)->daddr;
1745         } else if (ipv == 6) {
1746                 struct rt6_info *rt = (struct rt6_info *) dst;
1747
1748                 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
1749                         l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway;
1750                 else
1751                         l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr;
1752
1753                 hdr->hdr.l3.flags |= QETH_HDR_IPV6;
1754                 if (!IS_IQD(card))
1755                         hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU;
1756         } else {
1757                 /* OSA only: */
1758                 l3_hdr->flags |= QETH_HDR_PASSTHRU;
1759         }
1760         rcu_read_unlock();
1761 }
1762
1763 static void qeth_l3_fixup_headers(struct sk_buff *skb)
1764 {
1765         struct iphdr *iph = ip_hdr(skb);
1766
1767         /* this is safe, IPv6 traffic takes a different path */
1768         if (skb->ip_summed == CHECKSUM_PARTIAL)
1769                 iph->check = 0;
1770         if (skb_is_gso(skb)) {
1771                 iph->tot_len = 0;
1772                 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr,
1773                                                     iph->daddr, 0);
1774         }
1775 }
1776
1777 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb,
1778                         struct qeth_qdio_out_q *queue, int ipv)
1779 {
1780         unsigned int hw_hdr_len;
1781         int rc;
1782
1783         /* re-use the L2 header area for the HW header: */
1784         hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) :
1785                                        sizeof(struct qeth_hdr);
1786         rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN);
1787         if (rc)
1788                 return rc;
1789         skb_pull(skb, ETH_HLEN);
1790
1791         qeth_l3_fixup_headers(skb);
1792         return qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
1793 }
1794
1795 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
1796                                            struct net_device *dev)
1797 {
1798         struct qeth_card *card = dev->ml_priv;
1799         u16 txq = skb_get_queue_mapping(skb);
1800         int ipv = qeth_get_ip_version(skb);
1801         struct qeth_qdio_out_q *queue;
1802         int rc;
1803
1804         if (!skb_is_gso(skb))
1805                 qdisc_skb_cb(skb)->pkt_len = skb->len;
1806         if (IS_IQD(card)) {
1807                 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)];
1808
1809                 if (card->options.sniffer)
1810                         goto tx_drop;
1811                 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) ||
1812                     (card->options.cq == QETH_CQ_ENABLED &&
1813                      skb->protocol != htons(ETH_P_AF_IUCV)))
1814                         goto tx_drop;
1815         } else {
1816                 queue = card->qdio.out_qs[txq];
1817         }
1818
1819         if (!(dev->flags & IFF_BROADCAST) &&
1820             qeth_l3_get_cast_type(skb) == RTN_BROADCAST)
1821                 goto tx_drop;
1822
1823         if (ipv == 4 || IS_IQD(card))
1824                 rc = qeth_l3_xmit(card, skb, queue, ipv);
1825         else
1826                 rc = qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header);
1827
1828         if (!rc)
1829                 return NETDEV_TX_OK;
1830
1831 tx_drop:
1832         QETH_TXQ_STAT_INC(queue, tx_dropped);
1833         kfree_skb(skb);
1834         return NETDEV_TX_OK;
1835 }
1836
1837 static void qeth_l3_set_rx_mode(struct net_device *dev)
1838 {
1839         struct qeth_card *card = dev->ml_priv;
1840
1841         schedule_work(&card->rx_mode_work);
1842 }
1843
1844 /*
1845  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
1846  * NOARP on the netdevice is no option because it also turns off neighbor
1847  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
1848  * arp resolution but we want the hard header (packet socket will work
1849  * e.g. tcpdump)
1850  */
1851 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
1852 {
1853         n->nud_state = NUD_NOARP;
1854         memcpy(n->ha, "FAKELL", 6);
1855         n->output = n->ops->connected_output;
1856         return 0;
1857 }
1858
1859 static int
1860 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
1861 {
1862         if (np->tbl->family == AF_INET)
1863                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
1864
1865         return 0;
1866 }
1867
1868 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb,
1869                                                     struct net_device *dev,
1870                                                     netdev_features_t features)
1871 {
1872         if (qeth_get_ip_version(skb) != 4)
1873                 features &= ~NETIF_F_HW_VLAN_CTAG_TX;
1874         return qeth_features_check(skb, dev, features);
1875 }
1876
1877 static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb,
1878                                     struct net_device *sb_dev)
1879 {
1880         return qeth_iqd_select_queue(dev, skb, qeth_l3_get_cast_type(skb),
1881                                      sb_dev);
1882 }
1883
1884 static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb,
1885                                     struct net_device *sb_dev)
1886 {
1887         struct qeth_card *card = dev->ml_priv;
1888
1889         return qeth_get_priority_queue(card, skb);
1890 }
1891
1892 static const struct net_device_ops qeth_l3_netdev_ops = {
1893         .ndo_open               = qeth_open,
1894         .ndo_stop               = qeth_stop,
1895         .ndo_get_stats64        = qeth_get_stats64,
1896         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
1897         .ndo_select_queue       = qeth_l3_iqd_select_queue,
1898         .ndo_validate_addr      = eth_validate_addr,
1899         .ndo_set_rx_mode        = qeth_l3_set_rx_mode,
1900         .ndo_do_ioctl           = qeth_do_ioctl,
1901         .ndo_fix_features       = qeth_fix_features,
1902         .ndo_set_features       = qeth_set_features,
1903         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
1904         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
1905         .ndo_tx_timeout         = qeth_tx_timeout,
1906 };
1907
1908 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
1909         .ndo_open               = qeth_open,
1910         .ndo_stop               = qeth_stop,
1911         .ndo_get_stats64        = qeth_get_stats64,
1912         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
1913         .ndo_features_check     = qeth_l3_osa_features_check,
1914         .ndo_select_queue       = qeth_l3_osa_select_queue,
1915         .ndo_validate_addr      = eth_validate_addr,
1916         .ndo_set_rx_mode        = qeth_l3_set_rx_mode,
1917         .ndo_do_ioctl           = qeth_do_ioctl,
1918         .ndo_fix_features       = qeth_fix_features,
1919         .ndo_set_features       = qeth_set_features,
1920         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
1921         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
1922         .ndo_tx_timeout         = qeth_tx_timeout,
1923         .ndo_neigh_setup        = qeth_l3_neigh_setup,
1924 };
1925
1926 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok)
1927 {
1928         unsigned int headroom;
1929         int rc;
1930
1931         if (IS_OSD(card) || IS_OSX(card)) {
1932                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
1933                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
1934                         pr_info("qeth_l3: ignoring TR device\n");
1935                         return -ENODEV;
1936                 }
1937
1938                 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
1939
1940                 /*IPv6 address autoconfiguration stuff*/
1941                 qeth_l3_get_unique_id(card);
1942                 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
1943                         card->dev->dev_id = card->info.unique_id & 0xffff;
1944
1945                 if (!IS_VM_NIC(card)) {
1946                         card->dev->features |= NETIF_F_SG;
1947                         card->dev->hw_features |= NETIF_F_TSO |
1948                                 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1949                         card->dev->vlan_features |= NETIF_F_TSO |
1950                                 NETIF_F_RXCSUM | NETIF_F_IP_CSUM;
1951                 }
1952
1953                 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
1954                         card->dev->hw_features |= NETIF_F_IPV6_CSUM;
1955                         card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
1956                 }
1957                 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
1958                         card->dev->hw_features |= NETIF_F_TSO6;
1959                         card->dev->vlan_features |= NETIF_F_TSO6;
1960                 }
1961
1962                 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */
1963                 if (card->dev->hw_features & NETIF_F_TSO6)
1964                         headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN;
1965                 else if (card->dev->hw_features & NETIF_F_TSO)
1966                         headroom = sizeof(struct qeth_hdr_tso);
1967                 else
1968                         headroom = sizeof(struct qeth_hdr) + VLAN_HLEN;
1969         } else if (IS_IQD(card)) {
1970                 card->dev->flags |= IFF_NOARP;
1971                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
1972                 headroom = sizeof(struct qeth_hdr) - ETH_HLEN;
1973
1974                 rc = qeth_l3_iqd_read_initial_mac(card);
1975                 if (rc)
1976                         goto out;
1977         } else
1978                 return -ENODEV;
1979
1980         card->dev->needed_headroom = headroom;
1981         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
1982                                 NETIF_F_HW_VLAN_CTAG_RX |
1983                                 NETIF_F_HW_VLAN_CTAG_FILTER;
1984
1985         netif_keep_dst(card->dev);
1986         if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6))
1987                 netif_set_gso_max_size(card->dev,
1988                                        PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1));
1989
1990         netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
1991         rc = register_netdev(card->dev);
1992         if (!rc && carrier_ok)
1993                 netif_carrier_on(card->dev);
1994
1995 out:
1996         if (rc)
1997                 card->dev->netdev_ops = NULL;
1998         return rc;
1999 }
2000
2001 static const struct device_type qeth_l3_devtype = {
2002         .name = "qeth_layer3",
2003         .groups = qeth_l3_attr_groups,
2004 };
2005
2006 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
2007 {
2008         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
2009         int rc;
2010
2011         hash_init(card->ip_htable);
2012         mutex_init(&card->ip_lock);
2013         card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0,
2014                                                dev_name(&gdev->dev));
2015         if (!card->cmd_wq)
2016                 return -ENOMEM;
2017
2018         if (gdev->dev.type == &qeth_generic_devtype) {
2019                 rc = qeth_l3_create_device_attributes(&gdev->dev);
2020                 if (rc) {
2021                         destroy_workqueue(card->cmd_wq);
2022                         return rc;
2023                 }
2024         }
2025
2026         hash_init(card->ip_mc_htable);
2027         INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work);
2028         return 0;
2029 }
2030
2031 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
2032 {
2033         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
2034
2035         if (cgdev->dev.type == &qeth_generic_devtype)
2036                 qeth_l3_remove_device_attributes(&cgdev->dev);
2037
2038         qeth_set_allowed_threads(card, 0, 1);
2039         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
2040
2041         if (cgdev->state == CCWGROUP_ONLINE)
2042                 qeth_set_offline(card, false);
2043
2044         cancel_work_sync(&card->close_dev_work);
2045         if (qeth_netdev_is_registered(card->dev))
2046                 unregister_netdev(card->dev);
2047
2048         flush_workqueue(card->cmd_wq);
2049         destroy_workqueue(card->cmd_wq);
2050         qeth_l3_clear_ip_htable(card, 0);
2051         qeth_l3_clear_ipato_list(card);
2052 }
2053
2054 static int qeth_l3_set_online(struct qeth_card *card)
2055 {
2056         struct ccwgroup_device *gdev = card->gdev;
2057         struct net_device *dev = card->dev;
2058         int rc = 0;
2059         bool carrier_ok;
2060
2061         rc = qeth_core_hardsetup_card(card, &carrier_ok);
2062         if (rc) {
2063                 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
2064                 rc = -ENODEV;
2065                 goto out_remove;
2066         }
2067
2068         qeth_print_status_message(card);
2069
2070         /* softsetup */
2071         QETH_CARD_TEXT(card, 2, "softsetp");
2072
2073         rc = qeth_l3_setadapter_parms(card);
2074         if (rc)
2075                 QETH_CARD_TEXT_(card, 2, "2err%04x", rc);
2076         if (!card->options.sniffer) {
2077                 qeth_l3_start_ipassists(card);
2078
2079                 rc = qeth_l3_setrouting_v4(card);
2080                 if (rc)
2081                         QETH_CARD_TEXT_(card, 2, "4err%04x", rc);
2082                 rc = qeth_l3_setrouting_v6(card);
2083                 if (rc)
2084                         QETH_CARD_TEXT_(card, 2, "5err%04x", rc);
2085         }
2086
2087         card->state = CARD_STATE_SOFTSETUP;
2088
2089         qeth_set_allowed_threads(card, 0xffffffff, 0);
2090         qeth_l3_recover_ip(card);
2091
2092         if (!qeth_netdev_is_registered(dev)) {
2093                 rc = qeth_l3_setup_netdev(card, carrier_ok);
2094                 if (rc)
2095                         goto out_remove;
2096         } else {
2097                 rtnl_lock();
2098                 if (carrier_ok)
2099                         netif_carrier_on(dev);
2100                 else
2101                         netif_carrier_off(dev);
2102
2103                 netif_device_attach(dev);
2104                 qeth_enable_hw_features(dev);
2105
2106                 if (card->info.open_when_online) {
2107                         card->info.open_when_online = 0;
2108                         dev_open(dev, NULL);
2109                 }
2110                 rtnl_unlock();
2111         }
2112         qeth_trace_features(card);
2113         /* let user_space know that device is online */
2114         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
2115         return 0;
2116 out_remove:
2117         qeth_l3_stop_card(card);
2118         qeth_stop_channel(&card->data);
2119         qeth_stop_channel(&card->write);
2120         qeth_stop_channel(&card->read);
2121         qdio_free(CARD_DDEV(card));
2122         return rc;
2123 }
2124
2125 static void qeth_l3_set_offline(struct qeth_card *card)
2126 {
2127         qeth_l3_stop_card(card);
2128 }
2129
2130 /* Returns zero if the command is successfully "consumed" */
2131 static int qeth_l3_control_event(struct qeth_card *card,
2132                                         struct qeth_ipa_cmd *cmd)
2133 {
2134         return 1;
2135 }
2136
2137 struct qeth_discipline qeth_l3_discipline = {
2138         .devtype = &qeth_l3_devtype,
2139         .setup = qeth_l3_probe_device,
2140         .remove = qeth_l3_remove_device,
2141         .set_online = qeth_l3_set_online,
2142         .set_offline = qeth_l3_set_offline,
2143         .do_ioctl = qeth_l3_do_ioctl,
2144         .control_event_handler = qeth_l3_control_event,
2145 };
2146 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
2147
2148 static int qeth_l3_handle_ip_event(struct qeth_card *card,
2149                                    struct qeth_ipaddr *addr,
2150                                    unsigned long event)
2151 {
2152         switch (event) {
2153         case NETDEV_UP:
2154                 qeth_l3_modify_ip(card, addr, true);
2155                 return NOTIFY_OK;
2156         case NETDEV_DOWN:
2157                 qeth_l3_modify_ip(card, addr, false);
2158                 return NOTIFY_OK;
2159         default:
2160                 return NOTIFY_DONE;
2161         }
2162 }
2163
2164 struct qeth_l3_ip_event_work {
2165         struct work_struct work;
2166         struct qeth_card *card;
2167         struct qeth_ipaddr addr;
2168 };
2169
2170 #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work)
2171
2172 static void qeth_l3_add_ip_worker(struct work_struct *work)
2173 {
2174         struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2175
2176         qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true);
2177         kfree(work);
2178 }
2179
2180 static void qeth_l3_delete_ip_worker(struct work_struct *work)
2181 {
2182         struct qeth_l3_ip_event_work *ip_work = to_ip_work(work);
2183
2184         qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false);
2185         kfree(work);
2186 }
2187
2188 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2189 {
2190         if (is_vlan_dev(dev))
2191                 dev = vlan_dev_real_dev(dev);
2192         if (dev->netdev_ops == &qeth_l3_osa_netdev_ops ||
2193             dev->netdev_ops == &qeth_l3_netdev_ops)
2194                 return (struct qeth_card *) dev->ml_priv;
2195         return NULL;
2196 }
2197
2198 static int qeth_l3_ip_event(struct notifier_block *this,
2199                             unsigned long event, void *ptr)
2200 {
2201
2202         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
2203         struct net_device *dev = ifa->ifa_dev->dev;
2204         struct qeth_ipaddr addr;
2205         struct qeth_card *card;
2206
2207         if (dev_net(dev) != &init_net)
2208                 return NOTIFY_DONE;
2209
2210         card = qeth_l3_get_card_from_dev(dev);
2211         if (!card)
2212                 return NOTIFY_DONE;
2213         QETH_CARD_TEXT(card, 3, "ipevent");
2214
2215         qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4);
2216         addr.u.a4.addr = ifa->ifa_address;
2217         addr.u.a4.mask = ifa->ifa_mask;
2218
2219         return qeth_l3_handle_ip_event(card, &addr, event);
2220 }
2221
2222 static struct notifier_block qeth_l3_ip_notifier = {
2223         qeth_l3_ip_event,
2224         NULL,
2225 };
2226
2227 static int qeth_l3_ip6_event(struct notifier_block *this,
2228                              unsigned long event, void *ptr)
2229 {
2230         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
2231         struct net_device *dev = ifa->idev->dev;
2232         struct qeth_l3_ip_event_work *ip_work;
2233         struct qeth_card *card;
2234
2235         if (event != NETDEV_UP && event != NETDEV_DOWN)
2236                 return NOTIFY_DONE;
2237
2238         card = qeth_l3_get_card_from_dev(dev);
2239         if (!card)
2240                 return NOTIFY_DONE;
2241         QETH_CARD_TEXT(card, 3, "ip6event");
2242         if (!qeth_is_supported(card, IPA_IPV6))
2243                 return NOTIFY_DONE;
2244
2245         ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC);
2246         if (!ip_work)
2247                 return NOTIFY_DONE;
2248
2249         if (event == NETDEV_UP)
2250                 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker);
2251         else
2252                 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker);
2253
2254         ip_work->card = card;
2255         qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL,
2256                             QETH_PROT_IPV6);
2257         ip_work->addr.u.a6.addr = ifa->addr;
2258         ip_work->addr.u.a6.pfxlen = ifa->prefix_len;
2259
2260         queue_work(card->cmd_wq, &ip_work->work);
2261         return NOTIFY_OK;
2262 }
2263
2264 static struct notifier_block qeth_l3_ip6_notifier = {
2265         qeth_l3_ip6_event,
2266         NULL,
2267 };
2268
2269 static int qeth_l3_register_notifiers(void)
2270 {
2271         int rc;
2272
2273         QETH_DBF_TEXT(SETUP, 5, "regnotif");
2274         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
2275         if (rc)
2276                 return rc;
2277         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
2278         if (rc) {
2279                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
2280                 return rc;
2281         }
2282         return 0;
2283 }
2284
2285 static void qeth_l3_unregister_notifiers(void)
2286 {
2287         QETH_DBF_TEXT(SETUP, 5, "unregnot");
2288         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
2289         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
2290 }
2291
2292 static int __init qeth_l3_init(void)
2293 {
2294         pr_info("register layer 3 discipline\n");
2295         return qeth_l3_register_notifiers();
2296 }
2297
2298 static void __exit qeth_l3_exit(void)
2299 {
2300         qeth_l3_unregister_notifiers();
2301         pr_info("unregister layer 3 discipline\n");
2302 }
2303
2304 module_init(qeth_l3_init);
2305 module_exit(qeth_l3_exit);
2306 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2307 MODULE_DESCRIPTION("qeth layer 3 discipline");
2308 MODULE_LICENSE("GPL");