drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/bitops.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/ip.h>
  20 #include <linux/ipv6.h>
  21 #include <linux/inetdevice.h>
  22 #include <linux/igmp.h>
  23 #include <linux/slab.h>
  24 #include <linux/if_vlan.h>
  25
  26 #include <net/ip.h>
  27 #include <net/arp.h>
  28 #include <net/route.h>
  29 #include <net/ip6_fib.h>
  30 #include <net/ip6_checksum.h>
  31 #include <net/iucv/af_iucv.h>
  32 #include <linux/hashtable.h>
  33
  34 #include "qeth_l3.h"
  35
  36
  37 static int qeth_l3_set_offline(struct ccwgroup_device *);
  38 static int qeth_l3_stop(struct net_device *);
  39 static void qeth_l3_set_multicast_list(struct net_device *);
  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 static int qeth_l3_isxdigit(char *buf)
  46 {
  47         while (*buf) {
  48                 if (!isxdigit(*buf++))
  49                         return 0;
  50         }
  51         return 1;
  52 }
  53
  54 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  55 {
  56         sprintf(buf, "%pI4", addr);
  57 }
  58
  59 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  60 {
  61         int count = 0, rc = 0;
  62         unsigned int in[4];
  63         char c;
  64
  65         rc = sscanf(buf, "%u.%u.%u.%u%c",
  66                     &in[0], &in[1], &in[2], &in[3], &c);
  67         if (rc != 4 && (rc != 5 || c != '\n'))
  68                 return -EINVAL;
  69         for (count = 0; count < 4; count++) {
  70                 if (in[count] > 255)
  71                         return -EINVAL;
  72                 addr[count] = in[count];
  73         }
  74         return 0;
  75 }
  76
  77 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  78 {
  79         sprintf(buf, "%pI6", addr);
  80 }
  81
  82 static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  83 {
  84         const char *end, *end_tmp, *start;
  85         __u16 *in;
  86         char num[5];
  87         int num2, cnt, out, found, save_cnt;
  88         unsigned short in_tmp[8] = {0, };
  89
  90         cnt = out = found = save_cnt = num2 = 0;
  91         end = start = buf;
  92         in = (__u16 *) addr;
  93         memset(in, 0, 16);
  94         while (*end) {
  95                 end = strchr(start, ':');
  96                 if (end == NULL) {
  97                         end = buf + strlen(buf);
  98                         end_tmp = strchr(start, '\n');
  99                         if (end_tmp != NULL)
 100                                 end = end_tmp;
 101                         out = 1;
 102                 }
 103                 if ((end - start)) {
 104                         memset(num, 0, 5);
 105                         if ((end - start) > 4)
 106                                 return -EINVAL;
 107                         memcpy(num, start, end - start);
 108                         if (!qeth_l3_isxdigit(num))
 109                                 return -EINVAL;
 110                         sscanf(start, "%x", &num2);
 111                         if (found)
 112                                 in_tmp[save_cnt++] = num2;
 113                         else
 114                                 in[cnt++] = num2;
 115                         if (out)
 116                                 break;
 117                 } else {
 118                         if (found)
 119                                 return -EINVAL;
 120                         found = 1;
 121                 }
 122                 start = ++end;
 123         }
 124         if (cnt + save_cnt > 8)
 125                 return -EINVAL;
 126         cnt = 7;
 127         while (save_cnt)
 128                 in[cnt--] = in_tmp[--save_cnt];
 129         return 0;
 130 }
 131
 132 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 133                                 char *buf)
 134 {
 135         if (proto == QETH_PROT_IPV4)
 136                 qeth_l3_ipaddr4_to_string(addr, buf);
 137         else if (proto == QETH_PROT_IPV6)
 138                 qeth_l3_ipaddr6_to_string(addr, buf);
 139 }
 140
 141 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 142                                 __u8 *addr)
 143 {
 144         if (proto == QETH_PROT_IPV4)
 145                 return qeth_l3_string_to_ipaddr4(buf, addr);
 146         else if (proto == QETH_PROT_IPV6)
 147                 return qeth_l3_string_to_ipaddr6(buf, addr);
 148         else
 149                 return -EINVAL;
 150 }
 151
 152 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 153 {
 154         int i, j;
 155         u8 octet;
 156
 157         for (i = 0; i < len; ++i) {
 158                 octet = addr[i];
 159                 for (j = 7; j >= 0; --j) {
 160                         bits[i*8 + j] = octet & 1;
 161                         octet >>= 1;
 162                 }
 163         }
 164 }
 165
 166 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 167                                                 struct qeth_ipaddr *addr)
 168 {
 169         struct qeth_ipato_entry *ipatoe;
 170         u8 addr_bits[128] = {0, };
 171         u8 ipatoe_bits[128] = {0, };
 172         int rc = 0;
 173
 174         if (!card->ipato.enabled)
 175                 return 0;
 176
 177         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 178                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 179         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 180                 if (addr->proto != ipatoe->proto)
 181                         continue;
 182                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 183                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 184                                           4 : 16);
 185                 if (addr->proto == QETH_PROT_IPV4)
 186                         rc = !memcmp(addr_bits, ipatoe_bits,
 187                                      min(32, ipatoe->mask_bits));
 188                 else
 189                         rc = !memcmp(addr_bits, ipatoe_bits,
 190                                      min(128, ipatoe->mask_bits));
 191                 if (rc)
 192                         break;
 193         }
 194         /* invert? */
 195         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 196                 rc = !rc;
 197         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 198                 rc = !rc;
 199
 200         return rc;
 201 }
 202
 203 inline int
 204 qeth_l3_ipaddrs_is_equal(struct qeth_ipaddr *addr1, struct qeth_ipaddr *addr2)
 205 {
 206         return addr1->proto == addr2->proto &&
 207                 !memcmp(&addr1->u, &addr2->u, sizeof(addr1->u))  &&
 208                 !memcmp(&addr1->mac, &addr2->mac, sizeof(addr1->mac));
 209 }
 210
 211 static struct qeth_ipaddr *
 212 qeth_l3_ip_from_hash(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 213 {
 214         struct qeth_ipaddr *addr;
 215
 216         if (tmp_addr->is_multicast) {
 217                 hash_for_each_possible(card->ip_mc_htable,  addr,
 218                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 219                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 220                                 return addr;
 221         } else {
 222                 hash_for_each_possible(card->ip_htable,  addr,
 223                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 224                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 225                                 return addr;
 226         }
 227
 228         return NULL;
 229 }
 230
 231 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 232 {
 233         int rc = 0;
 234         struct qeth_ipaddr *addr;
 235
 236         QETH_CARD_TEXT(card, 4, "delip");
 237
 238         if (tmp_addr->proto == QETH_PROT_IPV4)
 239                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 240         else {
 241                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 242                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 243         }
 244
 245         addr = qeth_l3_ip_from_hash(card, tmp_addr);
 246         if (!addr)
 247                 return -ENOENT;
 248
 249         addr->ref_counter--;
 250         if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
 251                 return rc;
 252         if (addr->in_progress)
 253                 return -EINPROGRESS;
 254
 255         if (!qeth_card_hw_is_reachable(card)) {
 256                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
 257                 return 0;
 258         }
 259
 260         rc = qeth_l3_deregister_addr_entry(card, addr);
 261
 262         hash_del(&addr->hnode);
 263         kfree(addr);
 264
 265         return rc;
 266 }
 267
 268 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 269 {
 270         int rc = 0;
 271         struct qeth_ipaddr *addr;
 272
 273         QETH_CARD_TEXT(card, 4, "addip");
 274
 275         if (tmp_addr->proto == QETH_PROT_IPV4)
 276                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 277         else {
 278                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 279                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 280         }
 281
 282         addr = qeth_l3_ip_from_hash(card, tmp_addr);
 283         if (!addr) {
 284                 addr = qeth_l3_get_addr_buffer(tmp_addr->proto);
 285                 if (!addr)
 286                         return -ENOMEM;
 287
 288                 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr));
 289                 addr->ref_counter = 1;
 290
 291                 if (addr->type == QETH_IP_TYPE_NORMAL  &&
 292                                 qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 293                         QETH_CARD_TEXT(card, 2, "tkovaddr");
 294                         addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 295                 }
 296                 hash_add(card->ip_htable, &addr->hnode,
 297                                 qeth_l3_ipaddr_hash(addr));
 298
 299                 if (!qeth_card_hw_is_reachable(card)) {
 300                         addr->disp_flag = QETH_DISP_ADDR_ADD;
 301                         return 0;
 302                 }
 303
 304                 /* qeth_l3_register_addr_entry can go to sleep
 305                  * if we add a IPV4 addr. It is caused by the reason
 306                  * that SETIP ipa cmd starts ARP staff for IPV4 addr.
 307                  * Thus we should unlock spinlock, and make a protection
 308                  * using in_progress variable to indicate that there is
 309                  * an hardware operation with this IPV4 address
 310                  */
 311                 if (addr->proto == QETH_PROT_IPV4) {
 312                         addr->in_progress = 1;
 313                         spin_unlock_bh(&card->ip_lock);
 314                         rc = qeth_l3_register_addr_entry(card, addr);
 315                         spin_lock_bh(&card->ip_lock);
 316                         addr->in_progress = 0;
 317                 } else
 318                         rc = qeth_l3_register_addr_entry(card, addr);
 319
 320                 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
 321                                 (rc == IPA_RC_LAN_OFFLINE)) {
 322                         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 323                         if (addr->ref_counter < 1) {
 324                                 qeth_l3_delete_ip(card, addr);
 325                                 kfree(addr);
 326                         }
 327                 } else {
 328                         hash_del(&addr->hnode);
 329                         kfree(addr);
 330                 }
 331         } else {
 332                         if (addr->type == QETH_IP_TYPE_NORMAL)
 333                                 addr->ref_counter++;
 334         }
 335
 336         return rc;
 337 }
 338
 339
 340 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 341                                 enum qeth_prot_versions prot)
 342 {
 343         struct qeth_ipaddr *addr;
 344
 345         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 346         if (!addr)
 347                 return NULL;
 348
 349         addr->type = QETH_IP_TYPE_NORMAL;
 350         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 351         addr->proto = prot;
 352
 353         return addr;
 354 }
 355
 356 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 357 {
 358         struct qeth_ipaddr *addr;
 359         struct hlist_node *tmp;
 360         int i;
 361
 362         QETH_CARD_TEXT(card, 4, "clearip");
 363
 364         if (recover && card->options.sniffer)
 365                 return;
 366
 367         spin_lock_bh(&card->ip_lock);
 368
 369         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 370                 if (!recover) {
 371                         hash_del(&addr->hnode);
 372                         kfree(addr);
 373                         continue;
 374                 }
 375                 addr->disp_flag = QETH_DISP_ADDR_ADD;
 376         }
 377
 378         spin_unlock_bh(&card->ip_lock);
 379
 380         spin_lock_bh(&card->mclock);
 381
 382         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
 383                 hash_del(&addr->hnode);
 384                 kfree(addr);
 385         }
 386
 387         spin_unlock_bh(&card->mclock);
 388
 389
 390 }
 391 static void qeth_l3_recover_ip(struct qeth_card *card)
 392 {
 393         struct qeth_ipaddr *addr;
 394         struct hlist_node *tmp;
 395         int i;
 396         int rc;
 397
 398         QETH_CARD_TEXT(card, 4, "recovrip");
 399
 400         spin_lock_bh(&card->ip_lock);
 401
 402         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 403                 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
 404                         qeth_l3_deregister_addr_entry(card, addr);
 405                         hash_del(&addr->hnode);
 406                         kfree(addr);
 407                 } else if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
 408                         if (addr->proto == QETH_PROT_IPV4) {
 409                                 addr->in_progress = 1;
 410                                 spin_unlock_bh(&card->ip_lock);
 411                                 rc = qeth_l3_register_addr_entry(card, addr);
 412                                 spin_lock_bh(&card->ip_lock);
 413                                 addr->in_progress = 0;
 414                         } else
 415                                 rc = qeth_l3_register_addr_entry(card, addr);
 416
 417                         if (!rc) {
 418                                 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 419                                 if (addr->ref_counter < 1)
 420                                         qeth_l3_delete_ip(card, addr);
 421                         } else {
 422                                 hash_del(&addr->hnode);
 423                                 kfree(addr);
 424                         }
 425                 }
 426         }
 427
 428         spin_unlock_bh(&card->ip_lock);
 429
 430 }
 431
 432 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 433                         struct qeth_ipaddr *addr, int ipacmd)
 434 {
 435         int rc;
 436         struct qeth_cmd_buffer *iob;
 437         struct qeth_ipa_cmd *cmd;
 438
 439         QETH_CARD_TEXT(card, 4, "setdelmc");
 440
 441         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 442         if (!iob)
 443                 return -ENOMEM;
 444         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 445         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 446         if (addr->proto == QETH_PROT_IPV6)
 447                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 448                        sizeof(struct in6_addr));
 449         else
 450                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 451
 452         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 453
 454         return rc;
 455 }
 456
 457 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 458 {
 459         int i, j;
 460         for (i = 0; i < 16; i++) {
 461                 j = (len) - (i * 8);
 462                 if (j >= 8)
 463                         netmask[i] = 0xff;
 464                 else if (j > 0)
 465                         netmask[i] = (u8)(0xFF00 >> j);
 466                 else
 467                         netmask[i] = 0;
 468         }
 469 }
 470
 471 static int qeth_l3_send_setdelip(struct qeth_card *card,
 472                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 473 {
 474         int rc;
 475         struct qeth_cmd_buffer *iob;
 476         struct qeth_ipa_cmd *cmd;
 477         __u8 netmask[16];
 478
 479         QETH_CARD_TEXT(card, 4, "setdelip");
 480         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 481
 482         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 483         if (!iob)
 484                 return -ENOMEM;
 485         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 486         if (addr->proto == QETH_PROT_IPV6) {
 487                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 488                        sizeof(struct in6_addr));
 489                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 490                 memcpy(cmd->data.setdelip6.mask, netmask,
 491                        sizeof(struct in6_addr));
 492                 cmd->data.setdelip6.flags = flags;
 493         } else {
 494                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 495                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 496                 cmd->data.setdelip4.flags = flags;
 497         }
 498
 499         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 500
 501         return rc;
 502 }
 503
 504 static int qeth_l3_send_setrouting(struct qeth_card *card,
 505         enum qeth_routing_types type, enum qeth_prot_versions prot)
 506 {
 507         int rc;
 508         struct qeth_ipa_cmd *cmd;
 509         struct qeth_cmd_buffer *iob;
 510
 511         QETH_CARD_TEXT(card, 4, "setroutg");
 512         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 513         if (!iob)
 514                 return -ENOMEM;
 515         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 516         cmd->data.setrtg.type = (type);
 517         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 518
 519         return rc;
 520 }
 521
 522 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 523                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 524 {
 525         if (card->info.type == QETH_CARD_TYPE_IQD) {
 526                 switch (*type) {
 527                 case NO_ROUTER:
 528                 case PRIMARY_CONNECTOR:
 529                 case SECONDARY_CONNECTOR:
 530                 case MULTICAST_ROUTER:
 531                         return 0;
 532                 default:
 533                         goto out_inval;
 534                 }
 535         } else {
 536                 switch (*type) {
 537                 case NO_ROUTER:
 538                 case PRIMARY_ROUTER:
 539                 case SECONDARY_ROUTER:
 540                         return 0;
 541                 case MULTICAST_ROUTER:
 542                         if (qeth_is_ipafunc_supported(card, prot,
 543                                                       IPA_OSA_MC_ROUTER))
 544                                 return 0;
 545                 default:
 546                         goto out_inval;
 547                 }
 548         }
 549 out_inval:
 550         *type = NO_ROUTER;
 551         return -EINVAL;
 552 }
 553
 554 int qeth_l3_setrouting_v4(struct qeth_card *card)
 555 {
 556         int rc;
 557
 558         QETH_CARD_TEXT(card, 3, "setrtg4");
 559
 560         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 561                                   QETH_PROT_IPV4);
 562         if (rc)
 563                 return rc;
 564
 565         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 566                                   QETH_PROT_IPV4);
 567         if (rc) {
 568                 card->options.route4.type = NO_ROUTER;
 569                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 570                         " on %s. Type set to 'no router'.\n", rc,
 571                         QETH_CARD_IFNAME(card));
 572         }
 573         return rc;
 574 }
 575
 576 int qeth_l3_setrouting_v6(struct qeth_card *card)
 577 {
 578         int rc = 0;
 579
 580         QETH_CARD_TEXT(card, 3, "setrtg6");
 581 #ifdef CONFIG_QETH_IPV6
 582
 583         if (!qeth_is_supported(card, IPA_IPV6))
 584                 return 0;
 585         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 586                                   QETH_PROT_IPV6);
 587         if (rc)
 588                 return rc;
 589
 590         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 591                                   QETH_PROT_IPV6);
 592         if (rc) {
 593                 card->options.route6.type = NO_ROUTER;
 594                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 595                         " on %s. Type set to 'no router'.\n", rc,
 596                         QETH_CARD_IFNAME(card));
 597         }
 598 #endif
 599         return rc;
 600 }
 601
 602 /*
 603  * IP address takeover related functions
 604  */
 605 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 606 {
 607         struct qeth_ipato_entry *ipatoe, *tmp;
 608
 609         spin_lock_bh(&card->ip_lock);
 610
 611         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 612                 list_del(&ipatoe->entry);
 613                 kfree(ipatoe);
 614         }
 615
 616         spin_unlock_bh(&card->ip_lock);
 617 }
 618
 619 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 620                                 struct qeth_ipato_entry *new)
 621 {
 622         struct qeth_ipato_entry *ipatoe;
 623         int rc = 0;
 624
 625         QETH_CARD_TEXT(card, 2, "addipato");
 626
 627         spin_lock_bh(&card->ip_lock);
 628
 629         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 630                 if (ipatoe->proto != new->proto)
 631                         continue;
 632                 if (!memcmp(ipatoe->addr, new->addr,
 633                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 634                     (ipatoe->mask_bits == new->mask_bits)) {
 635                         rc = -EEXIST;
 636                         break;
 637                 }
 638         }
 639
 640         if (!rc)
 641                 list_add_tail(&new->entry, &card->ipato.entries);
 642
 643         spin_unlock_bh(&card->ip_lock);
 644
 645         return rc;
 646 }
 647
 648 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 649                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 650 {
 651         struct qeth_ipato_entry *ipatoe, *tmp;
 652
 653         QETH_CARD_TEXT(card, 2, "delipato");
 654
 655         spin_lock_bh(&card->ip_lock);
 656
 657         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 658                 if (ipatoe->proto != proto)
 659                         continue;
 660                 if (!memcmp(ipatoe->addr, addr,
 661                             (proto == QETH_PROT_IPV4)? 4:16) &&
 662                     (ipatoe->mask_bits == mask_bits)) {
 663                         list_del(&ipatoe->entry);
 664                         kfree(ipatoe);
 665                 }
 666         }
 667
 668         spin_unlock_bh(&card->ip_lock);
 669 }
 670
 671 /*
 672  * VIPA related functions
 673  */
 674 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 675               const u8 *addr)
 676 {
 677         struct qeth_ipaddr *ipaddr;
 678         int rc = 0;
 679
 680         ipaddr = qeth_l3_get_addr_buffer(proto);
 681         if (ipaddr) {
 682                 if (proto == QETH_PROT_IPV4) {
 683                         QETH_CARD_TEXT(card, 2, "addvipa4");
 684                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 685                         ipaddr->u.a4.mask = 0;
 686                 } else if (proto == QETH_PROT_IPV6) {
 687                         QETH_CARD_TEXT(card, 2, "addvipa6");
 688                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 689                         ipaddr->u.a6.pfxlen = 0;
 690                 }
 691                 ipaddr->type = QETH_IP_TYPE_VIPA;
 692                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 693                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 694         } else
 695                 return -ENOMEM;
 696
 697         spin_lock_bh(&card->ip_lock);
 698
 699         if (qeth_l3_ip_from_hash(card, ipaddr))
 700                 rc = -EEXIST;
 701         else
 702                 qeth_l3_add_ip(card, ipaddr);
 703
 704         spin_unlock_bh(&card->ip_lock);
 705
 706         kfree(ipaddr);
 707
 708         return rc;
 709 }
 710
 711 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 712               const u8 *addr)
 713 {
 714         struct qeth_ipaddr *ipaddr;
 715
 716         ipaddr = qeth_l3_get_addr_buffer(proto);
 717         if (ipaddr) {
 718                 if (proto == QETH_PROT_IPV4) {
 719                         QETH_CARD_TEXT(card, 2, "delvipa4");
 720                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 721                         ipaddr->u.a4.mask = 0;
 722                 } else if (proto == QETH_PROT_IPV6) {
 723                         QETH_CARD_TEXT(card, 2, "delvipa6");
 724                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 725                         ipaddr->u.a6.pfxlen = 0;
 726                 }
 727                 ipaddr->type = QETH_IP_TYPE_VIPA;
 728         } else
 729                 return;
 730
 731         spin_lock_bh(&card->ip_lock);
 732         qeth_l3_delete_ip(card, ipaddr);
 733         spin_unlock_bh(&card->ip_lock);
 734
 735         kfree(ipaddr);
 736 }
 737
 738 /*
 739  * proxy ARP related functions
 740  */
 741 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 742               const u8 *addr)
 743 {
 744         struct qeth_ipaddr *ipaddr;
 745         int rc = 0;
 746
 747         ipaddr = qeth_l3_get_addr_buffer(proto);
 748         if (ipaddr) {
 749                 if (proto == QETH_PROT_IPV4) {
 750                         QETH_CARD_TEXT(card, 2, "addrxip4");
 751                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 752                         ipaddr->u.a4.mask = 0;
 753                 } else if (proto == QETH_PROT_IPV6) {
 754                         QETH_CARD_TEXT(card, 2, "addrxip6");
 755                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 756                         ipaddr->u.a6.pfxlen = 0;
 757                 }
 758
 759                 ipaddr->type = QETH_IP_TYPE_RXIP;
 760                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 761                 ipaddr->del_flags = 0;
 762         } else
 763                 return -ENOMEM;
 764
 765         spin_lock_bh(&card->ip_lock);
 766
 767         if (qeth_l3_ip_from_hash(card, ipaddr))
 768                 rc = -EEXIST;
 769         else
 770                 qeth_l3_add_ip(card, ipaddr);
 771
 772         spin_unlock_bh(&card->ip_lock);
 773
 774         kfree(ipaddr);
 775
 776         return rc;
 777 }
 778
 779 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 780                         const u8 *addr)
 781 {
 782         struct qeth_ipaddr *ipaddr;
 783
 784         ipaddr = qeth_l3_get_addr_buffer(proto);
 785         if (ipaddr) {
 786                 if (proto == QETH_PROT_IPV4) {
 787                         QETH_CARD_TEXT(card, 2, "addrxip4");
 788                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 789                         ipaddr->u.a4.mask = 0;
 790                 } else if (proto == QETH_PROT_IPV6) {
 791                         QETH_CARD_TEXT(card, 2, "addrxip6");
 792                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 793                         ipaddr->u.a6.pfxlen = 0;
 794                 }
 795                 ipaddr->type = QETH_IP_TYPE_RXIP;
 796         } else
 797                 return;
 798
 799         spin_lock_bh(&card->ip_lock);
 800         qeth_l3_delete_ip(card, ipaddr);
 801         spin_unlock_bh(&card->ip_lock);
 802
 803         kfree(ipaddr);
 804 }
 805
 806 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 807                                 struct qeth_ipaddr *addr)
 808 {
 809         char buf[50];
 810         int rc = 0;
 811         int cnt = 3;
 812
 813
 814         if (addr->proto == QETH_PROT_IPV4) {
 815                 QETH_CARD_TEXT(card, 2, "setaddr4");
 816                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 817         } else if (addr->proto == QETH_PROT_IPV6) {
 818                 QETH_CARD_TEXT(card, 2, "setaddr6");
 819                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 820                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 821         } else {
 822                 QETH_CARD_TEXT(card, 2, "setaddr?");
 823                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 824         }
 825         do {
 826                 if (addr->is_multicast)
 827                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 828                 else
 829                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 830                                         addr->set_flags);
 831                 if (rc)
 832                         QETH_CARD_TEXT(card, 2, "failed");
 833         } while ((--cnt > 0) && rc);
 834         if (rc) {
 835                 QETH_CARD_TEXT(card, 2, "FAILED");
 836                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 837                 dev_warn(&card->gdev->dev,
 838                         "Registering IP address %s failed\n", buf);
 839         }
 840         return rc;
 841 }
 842
 843 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 844                                                 struct qeth_ipaddr *addr)
 845 {
 846         int rc = 0;
 847
 848         if (addr->proto == QETH_PROT_IPV4) {
 849                 QETH_CARD_TEXT(card, 2, "deladdr4");
 850                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 851         } else if (addr->proto == QETH_PROT_IPV6) {
 852                 QETH_CARD_TEXT(card, 2, "deladdr6");
 853                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 854                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 855         } else {
 856                 QETH_CARD_TEXT(card, 2, "deladdr?");
 857                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 858         }
 859         if (addr->is_multicast)
 860                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 861         else
 862                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 863                                         addr->del_flags);
 864         if (rc)
 865                 QETH_CARD_TEXT(card, 2, "failed");
 866
 867         return rc;
 868 }
 869
 870 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 871 {
 872         if (cast_type == RTN_MULTICAST)
 873                 return QETH_CAST_MULTICAST;
 874         if (cast_type == RTN_BROADCAST)
 875                 return QETH_CAST_BROADCAST;
 876         return QETH_CAST_UNICAST;
 877 }
 878
 879 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 880 {
 881         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 882         if (cast_type == RTN_MULTICAST)
 883                 return ct | QETH_CAST_MULTICAST;
 884         if (cast_type == RTN_ANYCAST)
 885                 return ct | QETH_CAST_ANYCAST;
 886         if (cast_type == RTN_BROADCAST)
 887                 return ct | QETH_CAST_BROADCAST;
 888         return ct | QETH_CAST_UNICAST;
 889 }
 890
 891 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 892 {
 893         int rc;
 894
 895         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 896
 897         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 898                 dev_info(&card->gdev->dev,
 899                         "set adapter parameters not supported.\n");
 900                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 901                 return 0;
 902         }
 903         rc = qeth_query_setadapterparms(card);
 904         if (rc) {
 905                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
 906                         "0x%x\n", dev_name(&card->gdev->dev), rc);
 907                 return rc;
 908         }
 909         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 910                 rc = qeth_setadpparms_change_macaddr(card);
 911                 if (rc)
 912                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
 913                                 " address failed\n");
 914         }
 915
 916         return rc;
 917 }
 918
 919 #ifdef CONFIG_QETH_IPV6
 920 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
 921                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
 922 {
 923         int rc;
 924         struct qeth_cmd_buffer *iob;
 925
 926         QETH_CARD_TEXT(card, 4, "simassp6");
 927         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
 928                                        0, QETH_PROT_IPV6);
 929         if (!iob)
 930                 return -ENOMEM;
 931         rc = qeth_send_setassparms(card, iob, 0, 0,
 932                                    qeth_setassparms_cb, NULL);
 933         return rc;
 934 }
 935 #endif
 936
 937 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
 938 {
 939         int rc;
 940
 941         QETH_CARD_TEXT(card, 3, "ipaarp");
 942
 943         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 944                 dev_info(&card->gdev->dev,
 945                         "ARP processing not supported on %s!\n",
 946                         QETH_CARD_IFNAME(card));
 947                 return 0;
 948         }
 949         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
 950                                           IPA_CMD_ASS_START, 0);
 951         if (rc) {
 952                 dev_warn(&card->gdev->dev,
 953                         "Starting ARP processing support for %s failed\n",
 954                         QETH_CARD_IFNAME(card));
 955         }
 956         return rc;
 957 }
 958
 959 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
 960 {
 961         int rc;
 962
 963         QETH_CARD_TEXT(card, 3, "stsrcmac");
 964
 965         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
 966                 dev_info(&card->gdev->dev,
 967                         "Inbound source MAC-address not supported on %s\n",
 968                         QETH_CARD_IFNAME(card));
 969                 return -EOPNOTSUPP;
 970         }
 971
 972         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
 973                                           IPA_CMD_ASS_START, 0);
 974         if (rc)
 975                 dev_warn(&card->gdev->dev,
 976                         "Starting source MAC-address support for %s failed\n",
 977                         QETH_CARD_IFNAME(card));
 978         return rc;
 979 }
 980
 981 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
 982 {
 983         int rc = 0;
 984
 985         QETH_CARD_TEXT(card, 3, "strtvlan");
 986
 987         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
 988                 dev_info(&card->gdev->dev,
 989                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
 990                 return -EOPNOTSUPP;
 991         }
 992
 993         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
 994                                           IPA_CMD_ASS_START, 0);
 995         if (rc) {
 996                 dev_warn(&card->gdev->dev,
 997                         "Starting VLAN support for %s failed\n",
 998                         QETH_CARD_IFNAME(card));
 999         } else {
1000                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1001         }
1002         return rc;
1003 }
1004
1005 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1006 {
1007         int rc;
1008
1009         QETH_CARD_TEXT(card, 3, "stmcast");
1010
1011         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1012                 dev_info(&card->gdev->dev,
1013                         "Multicast not supported on %s\n",
1014                         QETH_CARD_IFNAME(card));
1015                 return -EOPNOTSUPP;
1016         }
1017
1018         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1019                                           IPA_CMD_ASS_START, 0);
1020         if (rc) {
1021                 dev_warn(&card->gdev->dev,
1022                         "Starting multicast support for %s failed\n",
1023                         QETH_CARD_IFNAME(card));
1024         } else {
1025                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1026                 card->dev->flags |= IFF_MULTICAST;
1027         }
1028         return rc;
1029 }
1030
1031 #ifdef CONFIG_QETH_IPV6
1032 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1033 {
1034         int rc;
1035
1036         QETH_CARD_TEXT(card, 3, "softipv6");
1037
1038         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1039         if (rc) {
1040                 dev_err(&card->gdev->dev,
1041                         "Activating IPv6 support for %s failed\n",
1042                         QETH_CARD_IFNAME(card));
1043                 return rc;
1044         }
1045
1046         if (card->info.type == QETH_CARD_TYPE_IQD)
1047                 goto out;
1048
1049         rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1050                                           IPA_CMD_ASS_START, 3);
1051         if (rc) {
1052                 dev_err(&card->gdev->dev,
1053                         "Activating IPv6 support for %s failed\n",
1054                         QETH_CARD_IFNAME(card));
1055                 return rc;
1056         }
1057         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1058                                                IPA_CMD_ASS_START);
1059         if (rc) {
1060                 dev_err(&card->gdev->dev,
1061                         "Activating IPv6 support for %s failed\n",
1062                          QETH_CARD_IFNAME(card));
1063                 return rc;
1064         }
1065         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1066                                                IPA_CMD_ASS_START);
1067         if (rc) {
1068                 dev_warn(&card->gdev->dev,
1069                         "Enabling the passthrough mode for %s failed\n",
1070                         QETH_CARD_IFNAME(card));
1071                 return rc;
1072         }
1073 out:
1074         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1075         return 0;
1076 }
1077 #endif
1078
1079 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1080 {
1081         int rc = 0;
1082
1083         QETH_CARD_TEXT(card, 3, "strtipv6");
1084
1085         if (!qeth_is_supported(card, IPA_IPV6)) {
1086                 dev_info(&card->gdev->dev,
1087                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1088                 return 0;
1089         }
1090 #ifdef CONFIG_QETH_IPV6
1091         rc = qeth_l3_softsetup_ipv6(card);
1092 #endif
1093         return rc ;
1094 }
1095
1096 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1097 {
1098         int rc;
1099
1100         QETH_CARD_TEXT(card, 3, "stbrdcst");
1101         card->info.broadcast_capable = 0;
1102         if (!qeth_is_supported(card, IPA_FILTERING)) {
1103                 dev_info(&card->gdev->dev,
1104                         "Broadcast not supported on %s\n",
1105                         QETH_CARD_IFNAME(card));
1106                 rc = -EOPNOTSUPP;
1107                 goto out;
1108         }
1109         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1110                                           IPA_CMD_ASS_START, 0);
1111         if (rc) {
1112                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1113                         "%s failed\n", QETH_CARD_IFNAME(card));
1114                 goto out;
1115         }
1116
1117         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1118                                           IPA_CMD_ASS_CONFIGURE, 1);
1119         if (rc) {
1120                 dev_warn(&card->gdev->dev,
1121                         "Setting up broadcast filtering for %s failed\n",
1122                         QETH_CARD_IFNAME(card));
1123                 goto out;
1124         }
1125         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1126         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1127         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1128                                           IPA_CMD_ASS_ENABLE, 1);
1129         if (rc) {
1130                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1131                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1132                 goto out;
1133         }
1134         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1135 out:
1136         if (card->info.broadcast_capable)
1137                 card->dev->flags |= IFF_BROADCAST;
1138         else
1139                 card->dev->flags &= ~IFF_BROADCAST;
1140         return rc;
1141 }
1142
1143 static int qeth_l3_start_ipassists(struct qeth_card *card)
1144 {
1145         QETH_CARD_TEXT(card, 3, "strtipas");
1146
1147         if (qeth_set_access_ctrl_online(card, 0))
1148                 return -EIO;
1149         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1150         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1151         qeth_l3_start_ipa_vlan(card);           /* go on*/
1152         qeth_l3_start_ipa_multicast(card);              /* go on*/
1153         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1154         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1155         return 0;
1156 }
1157
1158 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1159                 struct qeth_reply *reply, unsigned long data)
1160 {
1161         struct qeth_ipa_cmd *cmd;
1162
1163         cmd = (struct qeth_ipa_cmd *) data;
1164         if (cmd->hdr.return_code == 0)
1165                 memcpy(card->dev->dev_addr,
1166                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1167         else
1168                 eth_random_addr(card->dev->dev_addr);
1169
1170         return 0;
1171 }
1172
1173 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1174 {
1175         int rc = 0;
1176         struct qeth_cmd_buffer *iob;
1177         struct qeth_ipa_cmd *cmd;
1178
1179         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1180
1181         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1182                                      QETH_PROT_IPV6);
1183         if (!iob)
1184                 return -ENOMEM;
1185         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1186         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1187                         card->info.unique_id;
1188
1189         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1190                                 NULL);
1191         return rc;
1192 }
1193
1194 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1195                 struct qeth_reply *reply, unsigned long data)
1196 {
1197         struct qeth_ipa_cmd *cmd;
1198
1199         cmd = (struct qeth_ipa_cmd *) data;
1200         if (cmd->hdr.return_code == 0)
1201                 card->info.unique_id = *((__u16 *)
1202                                 &cmd->data.create_destroy_addr.unique_id[6]);
1203         else {
1204                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1205                                         UNIQUE_ID_NOT_BY_CARD;
1206                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1207                         "generate a unique ID\n");
1208         }
1209         return 0;
1210 }
1211
1212 static int qeth_l3_get_unique_id(struct qeth_card *card)
1213 {
1214         int rc = 0;
1215         struct qeth_cmd_buffer *iob;
1216         struct qeth_ipa_cmd *cmd;
1217
1218         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1219
1220         if (!qeth_is_supported(card, IPA_IPV6)) {
1221                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1222                                         UNIQUE_ID_NOT_BY_CARD;
1223                 return 0;
1224         }
1225
1226         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1227                                      QETH_PROT_IPV6);
1228         if (!iob)
1229                 return -ENOMEM;
1230         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1231         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1232                         card->info.unique_id;
1233
1234         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1235         return rc;
1236 }
1237
1238 static int
1239 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1240                             unsigned long data)
1241 {
1242         struct qeth_ipa_cmd        *cmd;
1243         __u16 rc;
1244
1245         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1246
1247         cmd = (struct qeth_ipa_cmd *)data;
1248         rc = cmd->hdr.return_code;
1249         if (rc)
1250                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1251         switch (cmd->data.diagass.action) {
1252         case QETH_DIAGS_CMD_TRACE_QUERY:
1253                 break;
1254         case QETH_DIAGS_CMD_TRACE_DISABLE:
1255                 switch (rc) {
1256                 case 0:
1257                 case IPA_RC_INVALID_SUBCMD:
1258                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1259                         dev_info(&card->gdev->dev, "The HiperSockets network "
1260                                 "traffic analyzer is deactivated\n");
1261                         break;
1262                 default:
1263                         break;
1264                 }
1265                 break;
1266         case QETH_DIAGS_CMD_TRACE_ENABLE:
1267                 switch (rc) {
1268                 case 0:
1269                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1270                         dev_info(&card->gdev->dev, "The HiperSockets network "
1271                                 "traffic analyzer is activated\n");
1272                         break;
1273                 case IPA_RC_HARDWARE_AUTH_ERROR:
1274                         dev_warn(&card->gdev->dev, "The device is not "
1275                                 "authorized to run as a HiperSockets network "
1276                                 "traffic analyzer\n");
1277                         break;
1278                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1279                         dev_warn(&card->gdev->dev, "A HiperSockets "
1280                                 "network traffic analyzer is already "
1281                                 "active in the HiperSockets LAN\n");
1282                         break;
1283                 default:
1284                         break;
1285                 }
1286                 break;
1287         default:
1288                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1289                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1290         }
1291
1292         return 0;
1293 }
1294
1295 static int
1296 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1297 {
1298         struct qeth_cmd_buffer *iob;
1299         struct qeth_ipa_cmd    *cmd;
1300
1301         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1302
1303         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1304         if (!iob)
1305                 return -ENOMEM;
1306         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1307         cmd->data.diagass.subcmd_len = 16;
1308         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1309         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1310         cmd->data.diagass.action = diags_cmd;
1311         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1312 }
1313
1314 static void qeth_l3_get_mac_for_ipm(__be32 ipm, char *mac)
1315 {
1316         ip_eth_mc_map(ipm, mac);
1317 }
1318
1319 static void qeth_l3_mark_all_mc_to_be_deleted(struct qeth_card *card)
1320 {
1321         struct qeth_ipaddr *addr;
1322         int i;
1323
1324         hash_for_each(card->ip_mc_htable, i, addr, hnode)
1325                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1326
1327 }
1328
1329 static void qeth_l3_add_all_new_mc(struct qeth_card *card)
1330 {
1331         struct qeth_ipaddr *addr;
1332         struct hlist_node *tmp;
1333         int i;
1334         int rc;
1335
1336         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1337                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
1338                         rc = qeth_l3_register_addr_entry(card, addr);
1339                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
1340                                 addr->ref_counter = 1;
1341                         else {
1342                                 hash_del(&addr->hnode);
1343                                 kfree(addr);
1344                         }
1345                 }
1346         }
1347
1348 }
1349
1350 static void qeth_l3_delete_nonused_mc(struct qeth_card *card)
1351 {
1352         struct qeth_ipaddr *addr;
1353         struct hlist_node *tmp;
1354         int i;
1355         int rc;
1356
1357         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1358                 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
1359                         rc = qeth_l3_deregister_addr_entry(card, addr);
1360                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) {
1361                                 hash_del(&addr->hnode);
1362                                 kfree(addr);
1363                         }
1364                 }
1365         }
1366
1367 }
1368
1369
1370 static void
1371 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1372 {
1373         struct ip_mc_list *im4;
1374         struct qeth_ipaddr *tmp, *ipm;
1375         char buf[MAX_ADDR_LEN];
1376
1377         QETH_CARD_TEXT(card, 4, "addmc");
1378
1379         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1380                 if (!tmp)
1381                         return;
1382
1383         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1384              im4 = rcu_dereference(im4->next_rcu)) {
1385                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf);
1386
1387                 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr);
1388                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1389
1390                 ipm = qeth_l3_ip_from_hash(card, tmp);
1391                 if (ipm) {
1392                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1393                 } else {
1394                         ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1395                         if (!ipm)
1396                                 continue;
1397                         memcpy(ipm->mac, buf, sizeof(tmp->mac));
1398                         ipm->u.a4.addr = be32_to_cpu(im4->multiaddr);
1399                         ipm->is_multicast = 1;
1400                         ipm->disp_flag = QETH_DISP_ADDR_ADD;
1401                         hash_add(card->ip_mc_htable,
1402                                         &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1403                 }
1404         }
1405
1406         kfree(tmp);
1407 }
1408
1409 /* called with rcu_read_lock */
1410 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1411 {
1412         struct in_device *in_dev;
1413         u16 vid;
1414
1415         QETH_CARD_TEXT(card, 4, "addmcvl");
1416
1417         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1418                 return;
1419
1420         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1421                 struct net_device *netdev;
1422
1423                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1424                                               vid);
1425                 if (netdev == NULL ||
1426                     !(netdev->flags & IFF_UP))
1427                         continue;
1428                 in_dev = __in_dev_get_rcu(netdev);
1429                 if (!in_dev)
1430                         continue;
1431                 qeth_l3_add_mc_to_hash(card, in_dev);
1432         }
1433 }
1434
1435 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1436 {
1437         struct in_device *in4_dev;
1438
1439         QETH_CARD_TEXT(card, 4, "chkmcv4");
1440
1441         rcu_read_lock();
1442         in4_dev = __in_dev_get_rcu(card->dev);
1443         if (in4_dev == NULL)
1444                 goto unlock;
1445         qeth_l3_add_mc_to_hash(card, in4_dev);
1446         qeth_l3_add_vlan_mc(card);
1447 unlock:
1448         rcu_read_unlock();
1449 }
1450
1451 #ifdef CONFIG_QETH_IPV6
1452 static void
1453 qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev)
1454 {
1455         struct qeth_ipaddr *ipm;
1456         struct ifmcaddr6 *im6;
1457         struct qeth_ipaddr *tmp;
1458         char buf[MAX_ADDR_LEN];
1459
1460         QETH_CARD_TEXT(card, 4, "addmc6");
1461
1462         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1463                 if (!tmp)
1464                         return;
1465
1466         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1467                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1468
1469                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1470                 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1471                        sizeof(struct in6_addr));
1472                 tmp->is_multicast = 1;
1473
1474                 ipm = qeth_l3_ip_from_hash(card, tmp);
1475                 if (ipm) {
1476                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1477                         continue;
1478                 }
1479
1480                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1481                 if (!ipm)
1482                         continue;
1483
1484                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1485                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1486                        sizeof(struct in6_addr));
1487                 ipm->is_multicast = 1;
1488                 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1489                 hash_add(card->ip_mc_htable,
1490                                 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1491
1492         }
1493         kfree(tmp);
1494 }
1495
1496 /* called with rcu_read_lock */
1497 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1498 {
1499         struct inet6_dev *in_dev;
1500         u16 vid;
1501
1502         QETH_CARD_TEXT(card, 4, "admc6vl");
1503
1504         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1505                 return;
1506
1507         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1508                 struct net_device *netdev;
1509
1510                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1511                                               vid);
1512                 if (netdev == NULL ||
1513                     !(netdev->flags & IFF_UP))
1514                         continue;
1515                 in_dev = in6_dev_get(netdev);
1516                 if (!in_dev)
1517                         continue;
1518                 read_lock_bh(&in_dev->lock);
1519                 qeth_l3_add_mc6_to_hash(card, in_dev);
1520                 read_unlock_bh(&in_dev->lock);
1521                 in6_dev_put(in_dev);
1522         }
1523 }
1524
1525 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1526 {
1527         struct inet6_dev *in6_dev;
1528
1529         QETH_CARD_TEXT(card, 4, "chkmcv6");
1530
1531         if (!qeth_is_supported(card, IPA_IPV6))
1532                 return ;
1533         in6_dev = in6_dev_get(card->dev);
1534         if (!in6_dev)
1535                 return;
1536
1537         rcu_read_lock();
1538         read_lock_bh(&in6_dev->lock);
1539         qeth_l3_add_mc6_to_hash(card, in6_dev);
1540         qeth_l3_add_vlan_mc6(card);
1541         read_unlock_bh(&in6_dev->lock);
1542         rcu_read_unlock();
1543         in6_dev_put(in6_dev);
1544 }
1545 #endif /* CONFIG_QETH_IPV6 */
1546
1547 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1548                         unsigned short vid)
1549 {
1550         struct in_device *in_dev;
1551         struct in_ifaddr *ifa;
1552         struct qeth_ipaddr *addr;
1553         struct net_device *netdev;
1554
1555         QETH_CARD_TEXT(card, 4, "frvaddr4");
1556
1557         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1558         if (!netdev)
1559                 return;
1560         in_dev = in_dev_get(netdev);
1561         if (!in_dev)
1562                 return;
1563
1564         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1565         if (!addr)
1566                 return;
1567
1568         spin_lock_bh(&card->ip_lock);
1569
1570         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1571                 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address);
1572                 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask);
1573                 addr->type = QETH_IP_TYPE_NORMAL;
1574                 qeth_l3_delete_ip(card, addr);
1575         }
1576
1577         spin_unlock_bh(&card->ip_lock);
1578
1579         kfree(addr);
1580         in_dev_put(in_dev);
1581 }
1582
1583 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1584                         unsigned short vid)
1585 {
1586 #ifdef CONFIG_QETH_IPV6
1587         struct inet6_dev *in6_dev;
1588         struct inet6_ifaddr *ifa;
1589         struct qeth_ipaddr *addr;
1590         struct net_device *netdev;
1591
1592         QETH_CARD_TEXT(card, 4, "frvaddr6");
1593
1594         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1595         if (!netdev)
1596                 return;
1597
1598         in6_dev = in6_dev_get(netdev);
1599         if (!in6_dev)
1600                 return;
1601
1602         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1603         if (!addr)
1604                 return;
1605
1606         spin_lock_bh(&card->ip_lock);
1607
1608         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1609                 memcpy(&addr->u.a6.addr, &ifa->addr,
1610                        sizeof(struct in6_addr));
1611                 addr->u.a6.pfxlen = ifa->prefix_len;
1612                 addr->type = QETH_IP_TYPE_NORMAL;
1613                 qeth_l3_delete_ip(card, addr);
1614         }
1615
1616         spin_unlock_bh(&card->ip_lock);
1617
1618         kfree(addr);
1619         in6_dev_put(in6_dev);
1620 #endif /* CONFIG_QETH_IPV6 */
1621 }
1622
1623 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1624                         unsigned short vid)
1625 {
1626         rcu_read_lock();
1627         qeth_l3_free_vlan_addresses4(card, vid);
1628         qeth_l3_free_vlan_addresses6(card, vid);
1629         rcu_read_unlock();
1630 }
1631
1632 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1633                                    __be16 proto, u16 vid)
1634 {
1635         struct qeth_card *card = dev->ml_priv;
1636
1637         set_bit(vid, card->active_vlans);
1638         return 0;
1639 }
1640
1641 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1642                                     __be16 proto, u16 vid)
1643 {
1644         struct qeth_card *card = dev->ml_priv;
1645
1646         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1647
1648         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1649                 QETH_CARD_TEXT(card, 3, "kidREC");
1650                 return 0;
1651         }
1652         /* unregister IP addresses of vlan device */
1653         qeth_l3_free_vlan_addresses(card, vid);
1654         clear_bit(vid, card->active_vlans);
1655         qeth_l3_set_multicast_list(card->dev);
1656         return 0;
1657 }
1658
1659 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1660                         struct sk_buff *skb, struct qeth_hdr *hdr,
1661                         unsigned short *vlan_id)
1662 {
1663         __u16 prot;
1664         struct iphdr *ip_hdr;
1665         unsigned char tg_addr[MAX_ADDR_LEN];
1666         int is_vlan = 0;
1667
1668         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1669                 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 :
1670                               ETH_P_IP;
1671                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1672                 case QETH_CAST_MULTICAST:
1673                         switch (prot) {
1674 #ifdef CONFIG_QETH_IPV6
1675                         case ETH_P_IPV6:
1676                                 ndisc_mc_map((struct in6_addr *)
1677                                      skb->data + 24,
1678                                      tg_addr, card->dev, 0);
1679                                 break;
1680 #endif
1681                         case ETH_P_IP:
1682                                 ip_hdr = (struct iphdr *)skb->data;
1683                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1684                                 break;
1685                         default:
1686                                 memcpy(tg_addr, card->dev->broadcast,
1687                                         card->dev->addr_len);
1688                         }
1689                         card->stats.multicast++;
1690                         skb->pkt_type = PACKET_MULTICAST;
1691                         break;
1692                 case QETH_CAST_BROADCAST:
1693                         memcpy(tg_addr, card->dev->broadcast,
1694                                 card->dev->addr_len);
1695                         card->stats.multicast++;
1696                         skb->pkt_type = PACKET_BROADCAST;
1697                         break;
1698                 case QETH_CAST_UNICAST:
1699                 case QETH_CAST_ANYCAST:
1700                 case QETH_CAST_NOCAST:
1701                 default:
1702                         if (card->options.sniffer)
1703                                 skb->pkt_type = PACKET_OTHERHOST;
1704                         else
1705                                 skb->pkt_type = PACKET_HOST;
1706                         memcpy(tg_addr, card->dev->dev_addr,
1707                                 card->dev->addr_len);
1708                 }
1709                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1710                         card->dev->header_ops->create(skb, card->dev, prot,
1711                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1712                                 card->dev->addr_len);
1713                 else
1714                         card->dev->header_ops->create(skb, card->dev, prot,
1715                                 tg_addr, "FAKELL", card->dev->addr_len);
1716         }
1717
1718         skb->protocol = eth_type_trans(skb, card->dev);
1719
1720         if (hdr->hdr.l3.ext_flags &
1721             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1722                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1723                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1724                 is_vlan = 1;
1725         }
1726
1727         if (card->dev->features & NETIF_F_RXCSUM) {
1728                 if ((hdr->hdr.l3.ext_flags &
1729                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1730                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1731                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1732                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1733                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1734                 else
1735                         skb->ip_summed = CHECKSUM_NONE;
1736         } else
1737                 skb->ip_summed = CHECKSUM_NONE;
1738         return is_vlan;
1739 }
1740
1741 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1742                                 int budget, int *done)
1743 {
1744         int work_done = 0;
1745         struct sk_buff *skb;
1746         struct qeth_hdr *hdr;
1747         __u16 vlan_tag = 0;
1748         int is_vlan;
1749         unsigned int len;
1750         __u16 magic;
1751
1752         *done = 0;
1753         WARN_ON_ONCE(!budget);
1754         while (budget) {
1755                 skb = qeth_core_get_next_skb(card,
1756                         &card->qdio.in_q->bufs[card->rx.b_index],
1757                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1758                 if (!skb) {
1759                         *done = 1;
1760                         break;
1761                 }
1762                 skb->dev = card->dev;
1763                 switch (hdr->hdr.l3.id) {
1764                 case QETH_HEADER_TYPE_LAYER3:
1765                         magic = *(__u16 *)skb->data;
1766                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1767                             (magic == ETH_P_AF_IUCV)) {
1768                                 skb->protocol = cpu_to_be16(ETH_P_AF_IUCV);
1769                                 skb->pkt_type = PACKET_HOST;
1770                                 skb->mac_header = NET_SKB_PAD;
1771                                 skb->dev = card->dev;
1772                                 len = skb->len;
1773                                 card->dev->header_ops->create(skb, card->dev, 0,
1774                                         card->dev->dev_addr, "FAKELL",
1775                                         card->dev->addr_len);
1776                                 netif_receive_skb(skb);
1777                         } else {
1778                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1779                                                       &vlan_tag);
1780                                 len = skb->len;
1781                                 if (is_vlan && !card->options.sniffer)
1782                                         __vlan_hwaccel_put_tag(skb,
1783                                                 htons(ETH_P_8021Q), vlan_tag);
1784                                 napi_gro_receive(&card->napi, skb);
1785                         }
1786                         break;
1787                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1788                         skb->pkt_type = PACKET_HOST;
1789                         skb->protocol = eth_type_trans(skb, skb->dev);
1790                         len = skb->len;
1791                         netif_receive_skb(skb);
1792                         break;
1793                 default:
1794                         dev_kfree_skb_any(skb);
1795                         QETH_CARD_TEXT(card, 3, "inbunkno");
1796                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1797                         continue;
1798                 }
1799                 work_done++;
1800                 budget--;
1801                 card->stats.rx_packets++;
1802                 card->stats.rx_bytes += len;
1803         }
1804         return work_done;
1805 }
1806
1807 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1808                         struct qeth_card *card)
1809 {
1810         int rc = 0;
1811         u16 vid;
1812
1813         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1814                 struct net_device *netdev;
1815
1816                 rcu_read_lock();
1817                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1818                                               vid);
1819                 rcu_read_unlock();
1820                 if (netdev == dev) {
1821                         rc = QETH_VLAN_CARD;
1822                         break;
1823                 }
1824         }
1825
1826         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
1827                 return 0;
1828
1829         return rc;
1830 }
1831
1832 static int qeth_l3_verify_dev(struct net_device *dev)
1833 {
1834         struct qeth_card *card;
1835         int rc = 0;
1836         unsigned long flags;
1837
1838         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
1839         list_for_each_entry(card, &qeth_core_card_list.list, list) {
1840                 if (card->dev == dev) {
1841                         rc = QETH_REAL_CARD;
1842                         break;
1843                 }
1844                 rc = qeth_l3_verify_vlan_dev(dev, card);
1845                 if (rc)
1846                         break;
1847         }
1848         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
1849
1850         return rc;
1851 }
1852
1853 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
1854 {
1855         struct qeth_card *card = NULL;
1856         int rc;
1857
1858         rc = qeth_l3_verify_dev(dev);
1859         if (rc == QETH_REAL_CARD)
1860                 card = dev->ml_priv;
1861         else if (rc == QETH_VLAN_CARD)
1862                 card = vlan_dev_real_dev(dev)->ml_priv;
1863         if (card && card->options.layer2)
1864                 card = NULL;
1865         if (card)
1866                 QETH_CARD_TEXT_(card, 4, "%d", rc);
1867         return card ;
1868 }
1869
1870 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
1871 {
1872         QETH_DBF_TEXT(SETUP, 2, "stopcard");
1873         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1874
1875         qeth_set_allowed_threads(card, 0, 1);
1876         if (card->options.sniffer &&
1877             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
1878                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1879         if (card->read.state == CH_STATE_UP &&
1880             card->write.state == CH_STATE_UP &&
1881             (card->state == CARD_STATE_UP)) {
1882                 if (recovery_mode)
1883                         qeth_l3_stop(card->dev);
1884                 else {
1885                         rtnl_lock();
1886                         dev_close(card->dev);
1887                         rtnl_unlock();
1888                 }
1889                 card->state = CARD_STATE_SOFTSETUP;
1890         }
1891         if (card->state == CARD_STATE_SOFTSETUP) {
1892                 qeth_l3_clear_ip_htable(card, 1);
1893                 qeth_clear_ipacmd_list(card);
1894                 card->state = CARD_STATE_HARDSETUP;
1895         }
1896         if (card->state == CARD_STATE_HARDSETUP) {
1897                 qeth_qdio_clear_card(card, 0);
1898                 qeth_clear_qdio_buffers(card);
1899                 qeth_clear_working_pool_list(card);
1900                 card->state = CARD_STATE_DOWN;
1901         }
1902         if (card->state == CARD_STATE_DOWN) {
1903                 qeth_clear_cmd_buffers(&card->read);
1904                 qeth_clear_cmd_buffers(&card->write);
1905         }
1906 }
1907
1908 /*
1909  * test for and Switch promiscuous mode (on or off)
1910  *  either for guestlan or HiperSocket Sniffer
1911  */
1912 static void
1913 qeth_l3_handle_promisc_mode(struct qeth_card *card)
1914 {
1915         struct net_device *dev = card->dev;
1916
1917         if (((dev->flags & IFF_PROMISC) &&
1918              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
1919             (!(dev->flags & IFF_PROMISC) &&
1920              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
1921                 return;
1922
1923         if (card->info.guestlan) {              /* Guestlan trace */
1924                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1925                         qeth_setadp_promisc_mode(card);
1926         } else if (card->options.sniffer &&     /* HiperSockets trace */
1927                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
1928                 if (dev->flags & IFF_PROMISC) {
1929                         QETH_CARD_TEXT(card, 3, "+promisc");
1930                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
1931                 } else {
1932                         QETH_CARD_TEXT(card, 3, "-promisc");
1933                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
1934                 }
1935         }
1936 }
1937
1938 static void qeth_l3_set_multicast_list(struct net_device *dev)
1939 {
1940         struct qeth_card *card = dev->ml_priv;
1941
1942         QETH_CARD_TEXT(card, 3, "setmulti");
1943         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
1944             (card->state != CARD_STATE_UP))
1945                 return;
1946         if (!card->options.sniffer) {
1947
1948                 spin_lock_bh(&card->mclock);
1949
1950                 qeth_l3_mark_all_mc_to_be_deleted(card);
1951
1952                 qeth_l3_add_multicast_ipv4(card);
1953 #ifdef CONFIG_QETH_IPV6
1954                 qeth_l3_add_multicast_ipv6(card);
1955 #endif
1956                 qeth_l3_delete_nonused_mc(card);
1957                 qeth_l3_add_all_new_mc(card);
1958
1959                 spin_unlock_bh(&card->mclock);
1960
1961                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
1962                         return;
1963         }
1964         qeth_l3_handle_promisc_mode(card);
1965 }
1966
1967 static const char *qeth_l3_arp_get_error_cause(int *rc)
1968 {
1969         switch (*rc) {
1970         case QETH_IPA_ARP_RC_FAILED:
1971                 *rc = -EIO;
1972                 return "operation failed";
1973         case QETH_IPA_ARP_RC_NOTSUPP:
1974                 *rc = -EOPNOTSUPP;
1975                 return "operation not supported";
1976         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
1977                 *rc = -EINVAL;
1978                 return "argument out of range";
1979         case QETH_IPA_ARP_RC_Q_NOTSUPP:
1980                 *rc = -EOPNOTSUPP;
1981                 return "query operation not supported";
1982         case QETH_IPA_ARP_RC_Q_NO_DATA:
1983                 *rc = -ENOENT;
1984                 return "no query data available";
1985         default:
1986                 return "unknown error";
1987         }
1988 }
1989
1990 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
1991 {
1992         int tmp;
1993         int rc;
1994
1995         QETH_CARD_TEXT(card, 3, "arpstnoe");
1996
1997         /*
1998          * currently GuestLAN only supports the ARP assist function
1999          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2000          * thus we say EOPNOTSUPP for this ARP function
2001          */
2002         if (card->info.guestlan)
2003                 return -EOPNOTSUPP;
2004         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2005                 return -EOPNOTSUPP;
2006         }
2007         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2008                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2009                                           no_entries);
2010         if (rc) {
2011                 tmp = rc;
2012                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2013                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2014                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2015         }
2016         return rc;
2017 }
2018
2019 static __u32 get_arp_entry_size(struct qeth_card *card,
2020                         struct qeth_arp_query_data *qdata,
2021                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2022 {
2023         __u32 rc;
2024         __u8 is_hsi;
2025
2026         is_hsi = qdata->reply_bits == 5;
2027         if (type->ip == QETHARP_IP_ADDR_V4) {
2028                 QETH_CARD_TEXT(card, 4, "arpev4");
2029                 if (strip_entries) {
2030                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2031                                 sizeof(struct qeth_arp_qi_entry7_short);
2032                 } else {
2033                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2034                                 sizeof(struct qeth_arp_qi_entry7);
2035                 }
2036         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2037                 QETH_CARD_TEXT(card, 4, "arpev6");
2038                 if (strip_entries) {
2039                         rc = is_hsi ?
2040                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2041                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2042                 } else {
2043                         rc = is_hsi ?
2044                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2045                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2046                 }
2047         } else {
2048                 QETH_CARD_TEXT(card, 4, "arpinv");
2049                 rc = 0;
2050         }
2051
2052         return rc;
2053 }
2054
2055 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2056 {
2057         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2058                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2059 }
2060
2061 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2062                 struct qeth_reply *reply, unsigned long data)
2063 {
2064         struct qeth_ipa_cmd *cmd;
2065         struct qeth_arp_query_data *qdata;
2066         struct qeth_arp_query_info *qinfo;
2067         int i;
2068         int e;
2069         int entrybytes_done;
2070         int stripped_bytes;
2071         __u8 do_strip_entries;
2072
2073         QETH_CARD_TEXT(card, 3, "arpquecb");
2074
2075         qinfo = (struct qeth_arp_query_info *) reply->param;
2076         cmd = (struct qeth_ipa_cmd *) data;
2077         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2078         if (cmd->hdr.return_code) {
2079                 QETH_CARD_TEXT(card, 4, "arpcberr");
2080                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2081                 return 0;
2082         }
2083         if (cmd->data.setassparms.hdr.return_code) {
2084                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2085                 QETH_CARD_TEXT(card, 4, "setaperr");
2086                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2087                 return 0;
2088         }
2089         qdata = &cmd->data.setassparms.data.query_arp;
2090         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2091
2092         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2093         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2094         entrybytes_done = 0;
2095         for (e = 0; e < qdata->no_entries; ++e) {
2096                 char *cur_entry;
2097                 __u32 esize;
2098                 struct qeth_arp_entrytype *etype;
2099
2100                 cur_entry = &qdata->data + entrybytes_done;
2101                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2102                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2103                         QETH_CARD_TEXT(card, 4, "pmis");
2104                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2105                         break;
2106                 }
2107                 esize = get_arp_entry_size(card, qdata, etype,
2108                         do_strip_entries);
2109                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2110                 if (!esize)
2111                         break;
2112
2113                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2114                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2115                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2116                         goto out_error;
2117                 }
2118
2119                 memcpy(qinfo->udata + qinfo->udata_offset,
2120                         &qdata->data + entrybytes_done + stripped_bytes,
2121                         esize);
2122                 entrybytes_done += esize + stripped_bytes;
2123                 qinfo->udata_offset += esize;
2124                 ++qinfo->no_entries;
2125         }
2126         /* check if all replies received ... */
2127         if (cmd->data.setassparms.hdr.seq_no <
2128             cmd->data.setassparms.hdr.number_of_replies)
2129                 return 1;
2130         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2131         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2132         /* keep STRIP_ENTRIES flag so the user program can distinguish
2133          * stripped entries from normal ones */
2134         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2135                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2136         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2137         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2138         return 0;
2139 out_error:
2140         i = 0;
2141         memcpy(qinfo->udata, &i, 4);
2142         return 0;
2143 }
2144
2145 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2146                 struct qeth_cmd_buffer *iob, int len,
2147                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2148                         unsigned long),
2149                 void *reply_param)
2150 {
2151         QETH_CARD_TEXT(card, 4, "sendarp");
2152
2153         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2154         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2155                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2156         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2157                                       reply_cb, reply_param);
2158 }
2159
2160 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2161         enum qeth_prot_versions prot,
2162         struct qeth_arp_query_info *qinfo)
2163 {
2164         struct qeth_cmd_buffer *iob;
2165         struct qeth_ipa_cmd *cmd;
2166         int tmp;
2167         int rc;
2168
2169         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2170
2171         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2172                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2173                                        sizeof(struct qeth_arp_query_data)
2174                                                 - sizeof(char),
2175                                        prot);
2176         if (!iob)
2177                 return -ENOMEM;
2178         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2179         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2180         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2181         cmd->data.setassparms.data.query_arp.no_entries = 0;
2182         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2183                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2184                            qeth_l3_arp_query_cb, (void *)qinfo);
2185         if (rc) {
2186                 tmp = rc;
2187                 QETH_DBF_MESSAGE(2,
2188                         "Error while querying ARP cache on %s: %s "
2189                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2190                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2191         }
2192
2193         return rc;
2194 }
2195
2196 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2197 {
2198         struct qeth_arp_query_info qinfo = {0, };
2199         int rc;
2200
2201         QETH_CARD_TEXT(card, 3, "arpquery");
2202
2203         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2204                                IPA_ARP_PROCESSING)) {
2205                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2206                 rc = -EOPNOTSUPP;
2207                 goto out;
2208         }
2209         /* get size of userspace buffer and mask_bits -> 6 bytes */
2210         if (copy_from_user(&qinfo, udata, 6)) {
2211                 rc = -EFAULT;
2212                 goto out;
2213         }
2214         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2215         if (!qinfo.udata) {
2216                 rc = -ENOMEM;
2217                 goto out;
2218         }
2219         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2220         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2221         if (rc) {
2222                 if (copy_to_user(udata, qinfo.udata, 4))
2223                         rc = -EFAULT;
2224                 goto free_and_out;
2225         }
2226 #ifdef CONFIG_QETH_IPV6
2227         if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2228                 /* fails in case of GuestLAN QDIO mode */
2229                 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo);
2230         }
2231 #endif
2232         if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2233                 QETH_CARD_TEXT(card, 4, "qactf");
2234                 rc = -EFAULT;
2235                 goto free_and_out;
2236         }
2237         QETH_CARD_TEXT(card, 4, "qacts");
2238
2239 free_and_out:
2240         kfree(qinfo.udata);
2241 out:
2242         return rc;
2243 }
2244
2245 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2246                                 struct qeth_arp_cache_entry *entry)
2247 {
2248         struct qeth_cmd_buffer *iob;
2249         char buf[16];
2250         int tmp;
2251         int rc;
2252
2253         QETH_CARD_TEXT(card, 3, "arpadent");
2254
2255         /*
2256          * currently GuestLAN only supports the ARP assist function
2257          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2258          * thus we say EOPNOTSUPP for this ARP function
2259          */
2260         if (card->info.guestlan)
2261                 return -EOPNOTSUPP;
2262         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2263                 return -EOPNOTSUPP;
2264         }
2265
2266         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2267                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2268                                        sizeof(struct qeth_arp_cache_entry),
2269                                        QETH_PROT_IPV4);
2270         if (!iob)
2271                 return -ENOMEM;
2272         rc = qeth_send_setassparms(card, iob,
2273                                    sizeof(struct qeth_arp_cache_entry),
2274                                    (unsigned long) entry,
2275                                    qeth_setassparms_cb, NULL);
2276         if (rc) {
2277                 tmp = rc;
2278                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2279                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2280                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2281                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2282         }
2283         return rc;
2284 }
2285
2286 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2287                                 struct qeth_arp_cache_entry *entry)
2288 {
2289         struct qeth_cmd_buffer *iob;
2290         char buf[16] = {0, };
2291         int tmp;
2292         int rc;
2293
2294         QETH_CARD_TEXT(card, 3, "arprment");
2295
2296         /*
2297          * currently GuestLAN only supports the ARP assist function
2298          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2299          * thus we say EOPNOTSUPP for this ARP function
2300          */
2301         if (card->info.guestlan)
2302                 return -EOPNOTSUPP;
2303         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2304                 return -EOPNOTSUPP;
2305         }
2306         memcpy(buf, entry, 12);
2307         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2308                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2309                                        12,
2310                                        QETH_PROT_IPV4);
2311         if (!iob)
2312                 return -ENOMEM;
2313         rc = qeth_send_setassparms(card, iob,
2314                                    12, (unsigned long)buf,
2315                                    qeth_setassparms_cb, NULL);
2316         if (rc) {
2317                 tmp = rc;
2318                 memset(buf, 0, 16);
2319                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2320                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2321                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2322                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2323         }
2324         return rc;
2325 }
2326
2327 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2328 {
2329         int rc;
2330         int tmp;
2331
2332         QETH_CARD_TEXT(card, 3, "arpflush");
2333
2334         /*
2335          * currently GuestLAN only supports the ARP assist function
2336          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2337          * thus we say EOPNOTSUPP for this ARP function
2338         */
2339         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2340                 return -EOPNOTSUPP;
2341         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2342                 return -EOPNOTSUPP;
2343         }
2344         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2345                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2346         if (rc) {
2347                 tmp = rc;
2348                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2349                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2350                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2351         }
2352         return rc;
2353 }
2354
2355 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2356 {
2357         struct qeth_card *card = dev->ml_priv;
2358         struct qeth_arp_cache_entry arp_entry;
2359         int rc = 0;
2360
2361         switch (cmd) {
2362         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2363                 if (!capable(CAP_NET_ADMIN)) {
2364                         rc = -EPERM;
2365                         break;
2366                 }
2367                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2368                 break;
2369         case SIOC_QETH_ARP_QUERY_INFO:
2370                 if (!capable(CAP_NET_ADMIN)) {
2371                         rc = -EPERM;
2372                         break;
2373                 }
2374                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2375                 break;
2376         case SIOC_QETH_ARP_ADD_ENTRY:
2377                 if (!capable(CAP_NET_ADMIN)) {
2378                         rc = -EPERM;
2379                         break;
2380                 }
2381                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2382                                    sizeof(struct qeth_arp_cache_entry)))
2383                         rc = -EFAULT;
2384                 else
2385                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2386                 break;
2387         case SIOC_QETH_ARP_REMOVE_ENTRY:
2388                 if (!capable(CAP_NET_ADMIN)) {
2389                         rc = -EPERM;
2390                         break;
2391                 }
2392                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2393                                    sizeof(struct qeth_arp_cache_entry)))
2394                         rc = -EFAULT;
2395                 else
2396                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2397                 break;
2398         case SIOC_QETH_ARP_FLUSH_CACHE:
2399                 if (!capable(CAP_NET_ADMIN)) {
2400                         rc = -EPERM;
2401                         break;
2402                 }
2403                 rc = qeth_l3_arp_flush_cache(card);
2404                 break;
2405         default:
2406                 rc = -EOPNOTSUPP;
2407         }
2408         return rc;
2409 }
2410
2411 inline int qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2412 {
2413         int cast_type = RTN_UNSPEC;
2414         struct neighbour *n = NULL;
2415         struct dst_entry *dst;
2416
2417         rcu_read_lock();
2418         dst = skb_dst(skb);
2419         if (dst)
2420                 n = dst_neigh_lookup_skb(dst, skb);
2421         if (n) {
2422                 cast_type = n->type;
2423                 rcu_read_unlock();
2424                 neigh_release(n);
2425                 if ((cast_type == RTN_BROADCAST) ||
2426                     (cast_type == RTN_MULTICAST) ||
2427                     (cast_type == RTN_ANYCAST))
2428                         return cast_type;
2429                 else
2430                         return RTN_UNSPEC;
2431         }
2432         rcu_read_unlock();
2433
2434         /* try something else */
2435         if (be16_to_cpu(skb->protocol) == ETH_P_IPV6)
2436                 return (skb_network_header(skb)[24] == 0xff) ?
2437                                 RTN_MULTICAST : 0;
2438         else if (be16_to_cpu(skb->protocol) == ETH_P_IP)
2439                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2440                                 RTN_MULTICAST : 0;
2441         /* ... */
2442         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2443                 return RTN_BROADCAST;
2444         else {
2445                 u16 hdr_mac;
2446
2447                 hdr_mac = *((u16 *)skb->data);
2448                 /* tr multicast? */
2449                 switch (card->info.link_type) {
2450                 case QETH_LINK_TYPE_HSTR:
2451                 case QETH_LINK_TYPE_LANE_TR:
2452                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2453                             (hdr_mac == QETH_TR_MAC_C))
2454                                 return RTN_MULTICAST;
2455                         break;
2456                 /* eth or so multicast? */
2457                 default:
2458                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2459                             (hdr_mac == QETH_ETH_MAC_V6))
2460                                 return RTN_MULTICAST;
2461                 }
2462         }
2463         return cast_type;
2464 }
2465
2466 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2467                 struct qeth_hdr *hdr, struct sk_buff *skb)
2468 {
2469         char daddr[16];
2470         struct af_iucv_trans_hdr *iucv_hdr;
2471
2472         memset(hdr, 0, sizeof(struct qeth_hdr));
2473         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2474         hdr->hdr.l3.ext_flags = 0;
2475         hdr->hdr.l3.length = skb->len - ETH_HLEN;
2476         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2477
2478         iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN);
2479         memset(daddr, 0, sizeof(daddr));
2480         daddr[0] = 0xfe;
2481         daddr[1] = 0x80;
2482         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2483         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2484 }
2485
2486 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2487                 struct sk_buff *skb, int ipv, int cast_type)
2488 {
2489         struct dst_entry *dst;
2490
2491         memset(hdr, 0, sizeof(struct qeth_hdr));
2492         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2493         hdr->hdr.l3.ext_flags = 0;
2494
2495         /*
2496          * before we're going to overwrite this location with next hop ip.
2497          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2498          */
2499         if (skb_vlan_tag_present(skb)) {
2500                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2501                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2502                 else
2503                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2504                 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2505         }
2506
2507         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2508
2509         rcu_read_lock();
2510         dst = skb_dst(skb);
2511         if (ipv == 4) {
2512                 struct rtable *rt = (struct rtable *) dst;
2513                 __be32 *pkey = &ip_hdr(skb)->daddr;
2514
2515                 if (rt && rt->rt_gateway)
2516                         pkey = &rt->rt_gateway;
2517
2518                 /* IPv4 */
2519                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2520                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2521                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2522         } else if (ipv == 6) {
2523                 struct rt6_info *rt = (struct rt6_info *) dst;
2524                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2525
2526                 if (rt && !ipv6_addr_any(&rt->rt6i_gateway))
2527                         pkey = &rt->rt6i_gateway;
2528
2529                 /* IPv6 */
2530                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2531                 if (card->info.type == QETH_CARD_TYPE_IQD)
2532                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2533                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2534         } else {
2535                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2536                             skb->dev->broadcast, 6)) {
2537                         /* broadcast? */
2538                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2539                                                 QETH_HDR_PASSTHRU;
2540                 } else {
2541                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2542                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2543                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2544                 }
2545         }
2546         rcu_read_unlock();
2547 }
2548
2549 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2550                 struct qeth_hdr *hdr, struct sk_buff *skb)
2551 {
2552         struct iphdr *iph = ip_hdr(skb);
2553
2554         /* tcph->check contains already the pseudo hdr checksum
2555          * so just set the header flags
2556          */
2557         if (iph->protocol == IPPROTO_UDP)
2558                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2559         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2560                 QETH_HDR_EXT_CSUM_HDR_REQ;
2561         iph->check = 0;
2562         if (card->options.performance_stats)
2563                 card->perf_stats.tx_csum++;
2564 }
2565
2566 static void qeth_tso_fill_header(struct qeth_card *card,
2567                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2568 {
2569         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2570         struct tcphdr *tcph = tcp_hdr(skb);
2571         struct iphdr *iph = ip_hdr(skb);
2572         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2573
2574         /*fix header to TSO values ...*/
2575         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2576         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2577         /*set values which are fix for the first approach ...*/
2578         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2579         hdr->ext.imb_hdr_no  = 1;
2580         hdr->ext.hdr_type    = 1;
2581         hdr->ext.hdr_version = 1;
2582         hdr->ext.hdr_len     = 28;
2583         /*insert non-fix values */
2584         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2585         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2586         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2587                                        sizeof(struct qeth_hdr_tso));
2588         tcph->check = 0;
2589         if (be16_to_cpu(skb->protocol) == ETH_P_IPV6) {
2590                 ip6h->payload_len = 0;
2591                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2592                                                0, IPPROTO_TCP, 0);
2593         } else {
2594                 /*OSA want us to set these values ...*/
2595                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2596                                          0, IPPROTO_TCP, 0);
2597                 iph->tot_len = 0;
2598                 iph->check = 0;
2599         }
2600 }
2601
2602 /**
2603  * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2604  * @card:                          qeth card structure, to check max. elems.
2605  * @skb:                           SKB address
2606  * @extra_elems:                   extra elems needed, to check against max.
2607  *
2608  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2609  * skb data, including linear part and fragments, but excluding TCP header.
2610  * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2611  * Checks if the result plus extra_elems fits under the limit for the card.
2612  * Returns 0 if it does not.
2613  * Note: extra_elems is not included in the returned result.
2614  */
2615 static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2616                         struct sk_buff *skb, int extra_elems)
2617 {
2618         addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2619         int elements = qeth_get_elements_for_range(
2620                                 tcpdptr,
2621                                 (addr_t)skb->data + skb_headlen(skb)) +
2622                                 qeth_get_elements_for_frags(skb);
2623
2624         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2625                 QETH_DBF_MESSAGE(2,
2626         "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2627                                 elements + extra_elems, skb->len);
2628                 return 0;
2629         }
2630         return elements;
2631 }
2632
2633 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb,
2634                                            struct net_device *dev)
2635 {
2636         int rc;
2637         __be16 *tag;
2638         struct qeth_hdr *hdr = NULL;
2639         int hdr_elements = 0;
2640         int elements;
2641         struct qeth_card *card = dev->ml_priv;
2642         struct sk_buff *new_skb = NULL;
2643         int ipv = qeth_get_ip_version(skb);
2644         int cast_type = qeth_l3_get_cast_type(card, skb);
2645         struct qeth_qdio_out_q *queue =
2646                 card->qdio.out_qs[card->qdio.do_prio_queueing
2647                         || (cast_type && card->info.is_multicast_different) ?
2648                         qeth_get_priority_queue(card, skb, ipv, cast_type) :
2649                         card->qdio.default_out_queue];
2650         int tx_bytes = skb->len;
2651         bool use_tso;
2652         int data_offset = -1;
2653         int nr_frags;
2654
2655         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2656              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2657               ((card->options.cq == QETH_CQ_ENABLED) &&
2658                (be16_to_cpu(skb->protocol) != ETH_P_AF_IUCV)))) ||
2659             card->options.sniffer)
2660                         goto tx_drop;
2661
2662         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2663                 card->stats.tx_carrier_errors++;
2664                 goto tx_drop;
2665         }
2666
2667         if ((cast_type == RTN_BROADCAST) &&
2668             (card->info.broadcast_capable == 0))
2669                 goto tx_drop;
2670
2671         if (card->options.performance_stats) {
2672                 card->perf_stats.outbound_cnt++;
2673                 card->perf_stats.outbound_start_time = qeth_get_micros();
2674         }
2675
2676         /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2677         use_tso = skb_is_gso(skb) &&
2678                   (qeth_get_ip_protocol(skb) == IPPROTO_TCP) && (ipv == 4);
2679
2680         if (card->info.type == QETH_CARD_TYPE_IQD) {
2681                 new_skb = skb;
2682                 data_offset = ETH_HLEN;
2683                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2684                 if (!hdr)
2685                         goto tx_drop;
2686                 hdr_elements++;
2687         } else {
2688                 /* create a clone with writeable headroom */
2689                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2690                                         + VLAN_HLEN);
2691                 if (!new_skb)
2692                         goto tx_drop;
2693
2694                 if (ipv == 4) {
2695                         skb_pull(new_skb, ETH_HLEN);
2696                 }
2697
2698                 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2699                         skb_push(new_skb, VLAN_HLEN);
2700                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2701                         skb_copy_to_linear_data_offset(new_skb, 4,
2702                                 new_skb->data + 8, 4);
2703                         skb_copy_to_linear_data_offset(new_skb, 8,
2704                                 new_skb->data + 12, 4);
2705                         tag = (__be16 *)(new_skb->data + 12);
2706                         *tag = cpu_to_be16(ETH_P_8021Q);
2707                         *(tag + 1) = cpu_to_be16(skb_vlan_tag_get(new_skb));
2708                 }
2709         }
2710
2711         netif_stop_queue(dev);
2712
2713         /* fix hardware limitation: as long as we do not have sbal
2714          * chaining we can not send long frag lists
2715          */
2716         if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2717             ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2718              (!use_tso && !qeth_get_elements_no(card, new_skb, 0, 0)))) {
2719                 int lin_rc = skb_linearize(new_skb);
2720
2721                 if (card->options.performance_stats) {
2722                         if (lin_rc)
2723                                 card->perf_stats.tx_linfail++;
2724                         else
2725                                 card->perf_stats.tx_lin++;
2726                 }
2727                 if (lin_rc)
2728                         goto tx_drop;
2729         }
2730
2731         if (use_tso) {
2732                 hdr = skb_push(new_skb, sizeof(struct qeth_hdr_tso));
2733                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2734                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2735                 qeth_tso_fill_header(card, hdr, new_skb);
2736                 hdr_elements++;
2737         } else {
2738                 if (data_offset < 0) {
2739                         hdr = skb_push(new_skb, sizeof(struct qeth_hdr));
2740                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2741                                                 cast_type);
2742                 } else {
2743                         if (be16_to_cpu(new_skb->protocol) == ETH_P_AF_IUCV)
2744                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2745                         else {
2746                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2747                                                         cast_type);
2748                                 hdr->hdr.l3.length = new_skb->len - data_offset;
2749                         }
2750                 }
2751
2752                 if (skb->ip_summed == CHECKSUM_PARTIAL)
2753                         qeth_l3_hdr_csum(card, hdr, new_skb);
2754         }
2755
2756         elements = use_tso ?
2757                    qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2758                    qeth_get_elements_no(card, new_skb, hdr_elements,
2759                                         (data_offset > 0) ? data_offset : 0);
2760         if (!elements) {
2761                 if (data_offset >= 0)
2762                         kmem_cache_free(qeth_core_header_cache, hdr);
2763                 goto tx_drop;
2764         }
2765         elements += hdr_elements;
2766
2767         if (card->info.type != QETH_CARD_TYPE_IQD) {
2768                 int len;
2769                 if (use_tso)
2770                         len = ((unsigned long)tcp_hdr(new_skb) +
2771                                 tcp_hdrlen(new_skb)) -
2772                                 (unsigned long)new_skb->data;
2773                 else
2774                         len = sizeof(struct qeth_hdr_layer3);
2775
2776                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2777                         goto tx_drop;
2778                 rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements);
2779         } else
2780                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2781                                               data_offset, 0);
2782
2783         if (!rc) {
2784                 card->stats.tx_packets++;
2785                 card->stats.tx_bytes += tx_bytes;
2786                 if (new_skb != skb)
2787                         dev_kfree_skb_any(skb);
2788                 if (card->options.performance_stats) {
2789                         nr_frags = skb_shinfo(new_skb)->nr_frags;
2790                         if (use_tso) {
2791                                 card->perf_stats.large_send_bytes += tx_bytes;
2792                                 card->perf_stats.large_send_cnt++;
2793                         }
2794                         if (nr_frags) {
2795                                 card->perf_stats.sg_skbs_sent++;
2796                                 /* nr_frags + skb->data */
2797                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
2798                         }
2799                 }
2800                 rc = NETDEV_TX_OK;
2801         } else {
2802                 if (data_offset >= 0)
2803                         kmem_cache_free(qeth_core_header_cache, hdr);
2804
2805                 if (rc == -EBUSY) {
2806                         if (new_skb != skb)
2807                                 dev_kfree_skb_any(new_skb);
2808                         return NETDEV_TX_BUSY;
2809                 } else
2810                         goto tx_drop;
2811         }
2812
2813         netif_wake_queue(dev);
2814         if (card->options.performance_stats)
2815                 card->perf_stats.outbound_time += qeth_get_micros() -
2816                         card->perf_stats.outbound_start_time;
2817         return rc;
2818
2819 tx_drop:
2820         card->stats.tx_dropped++;
2821         card->stats.tx_errors++;
2822         if ((new_skb != skb) && new_skb)
2823                 dev_kfree_skb_any(new_skb);
2824         dev_kfree_skb_any(skb);
2825         netif_wake_queue(dev);
2826         return NETDEV_TX_OK;
2827 }
2828
2829 static int __qeth_l3_open(struct net_device *dev)
2830 {
2831         struct qeth_card *card = dev->ml_priv;
2832         int rc = 0;
2833
2834         QETH_CARD_TEXT(card, 4, "qethopen");
2835         if (card->state == CARD_STATE_UP)
2836                 return rc;
2837         if (card->state != CARD_STATE_SOFTSETUP)
2838                 return -ENODEV;
2839         card->data.state = CH_STATE_UP;
2840         card->state = CARD_STATE_UP;
2841         netif_start_queue(dev);
2842
2843         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
2844                 napi_enable(&card->napi);
2845                 napi_schedule(&card->napi);
2846         } else
2847                 rc = -EIO;
2848         return rc;
2849 }
2850
2851 static int qeth_l3_open(struct net_device *dev)
2852 {
2853         struct qeth_card *card = dev->ml_priv;
2854
2855         QETH_CARD_TEXT(card, 5, "qethope_");
2856         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
2857                 QETH_CARD_TEXT(card, 3, "openREC");
2858                 return -ERESTARTSYS;
2859         }
2860         return __qeth_l3_open(dev);
2861 }
2862
2863 static int qeth_l3_stop(struct net_device *dev)
2864 {
2865         struct qeth_card *card = dev->ml_priv;
2866
2867         QETH_CARD_TEXT(card, 4, "qethstop");
2868         netif_tx_disable(dev);
2869         if (card->state == CARD_STATE_UP) {
2870                 card->state = CARD_STATE_SOFTSETUP;
2871                 napi_disable(&card->napi);
2872         }
2873         return 0;
2874 }
2875
2876 static const struct ethtool_ops qeth_l3_ethtool_ops = {
2877         .get_link = ethtool_op_get_link,
2878         .get_strings = qeth_core_get_strings,
2879         .get_ethtool_stats = qeth_core_get_ethtool_stats,
2880         .get_sset_count = qeth_core_get_sset_count,
2881         .get_drvinfo = qeth_core_get_drvinfo,
2882         .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
2883 };
2884
2885 /*
2886  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
2887  * NOARP on the netdevice is no option because it also turns off neighbor
2888  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
2889  * arp resolution but we want the hard header (packet socket will work
2890  * e.g. tcpdump)
2891  */
2892 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
2893 {
2894         n->nud_state = NUD_NOARP;
2895         memcpy(n->ha, "FAKELL", 6);
2896         n->output = n->ops->connected_output;
2897         return 0;
2898 }
2899
2900 static int
2901 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
2902 {
2903         if (np->tbl->family == AF_INET)
2904                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
2905
2906         return 0;
2907 }
2908
2909 static const struct net_device_ops qeth_l3_netdev_ops = {
2910         .ndo_open               = qeth_l3_open,
2911         .ndo_stop               = qeth_l3_stop,
2912         .ndo_get_stats          = qeth_get_stats,
2913         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2914         .ndo_validate_addr      = eth_validate_addr,
2915         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
2916         .ndo_do_ioctl           = qeth_do_ioctl,
2917         .ndo_change_mtu         = qeth_change_mtu,
2918         .ndo_fix_features       = qeth_fix_features,
2919         .ndo_set_features       = qeth_set_features,
2920         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2921         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2922         .ndo_tx_timeout         = qeth_tx_timeout,
2923 };
2924
2925 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
2926         .ndo_open               = qeth_l3_open,
2927         .ndo_stop               = qeth_l3_stop,
2928         .ndo_get_stats          = qeth_get_stats,
2929         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
2930         .ndo_validate_addr      = eth_validate_addr,
2931         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
2932         .ndo_do_ioctl           = qeth_do_ioctl,
2933         .ndo_change_mtu         = qeth_change_mtu,
2934         .ndo_fix_features       = qeth_fix_features,
2935         .ndo_set_features       = qeth_set_features,
2936         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
2937         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
2938         .ndo_tx_timeout         = qeth_tx_timeout,
2939         .ndo_neigh_setup        = qeth_l3_neigh_setup,
2940 };
2941
2942 static int qeth_l3_setup_netdev(struct qeth_card *card)
2943 {
2944         int rc;
2945
2946         if (card->info.type == QETH_CARD_TYPE_OSD ||
2947             card->info.type == QETH_CARD_TYPE_OSX) {
2948                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
2949                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
2950                         pr_info("qeth_l3: ignoring TR device\n");
2951                         return -ENODEV;
2952                 } else {
2953                         card->dev = alloc_etherdev(0);
2954                         if (!card->dev)
2955                                 return -ENODEV;
2956                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
2957
2958                         /*IPv6 address autoconfiguration stuff*/
2959                         qeth_l3_get_unique_id(card);
2960                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
2961                                 card->dev->dev_id = card->info.unique_id &
2962                                                          0xffff;
2963                         if (!card->info.guestlan) {
2964                                 card->dev->hw_features = NETIF_F_SG |
2965                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
2966                                         NETIF_F_TSO;
2967                                 card->dev->vlan_features = NETIF_F_SG |
2968                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
2969                                         NETIF_F_TSO;
2970                         }
2971                 }
2972         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
2973                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
2974                                          ether_setup);
2975                 if (!card->dev)
2976                         return -ENODEV;
2977                 card->dev->flags |= IFF_NOARP;
2978                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
2979                 rc = qeth_l3_iqd_read_initial_mac(card);
2980                 if (rc)
2981                         return rc;
2982                 if (card->options.hsuid[0])
2983                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
2984         } else
2985                 return -ENODEV;
2986
2987         card->dev->ml_priv = card;
2988         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
2989         card->dev->mtu = card->info.initial_mtu;
2990         card->dev->min_mtu = 64;
2991         card->dev->max_mtu = ETH_MAX_MTU;
2992         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
2993         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
2994                                 NETIF_F_HW_VLAN_CTAG_RX |
2995                                 NETIF_F_HW_VLAN_CTAG_FILTER;
2996         netif_keep_dst(card->dev);
2997         card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
2998                                   PAGE_SIZE;
2999
3000         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3001         netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
3002         netif_carrier_off(card->dev);
3003         return register_netdev(card->dev);
3004 }
3005
3006 static const struct device_type qeth_l3_devtype = {
3007         .name = "qeth_layer3",
3008         .groups = qeth_l3_attr_groups,
3009 };
3010
3011 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3012 {
3013         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3014         int rc;
3015
3016         if (gdev->dev.type == &qeth_generic_devtype) {
3017                 rc = qeth_l3_create_device_attributes(&gdev->dev);
3018                 if (rc)
3019                         return rc;
3020         }
3021         hash_init(card->ip_htable);
3022         hash_init(card->ip_mc_htable);
3023         card->options.layer2 = 0;
3024         card->info.hwtrap = 0;
3025         return 0;
3026 }
3027
3028 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3029 {
3030         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3031
3032         if (cgdev->dev.type == &qeth_generic_devtype)
3033                 qeth_l3_remove_device_attributes(&cgdev->dev);
3034
3035         qeth_set_allowed_threads(card, 0, 1);
3036         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3037
3038         if (cgdev->state == CCWGROUP_ONLINE)
3039                 qeth_l3_set_offline(cgdev);
3040
3041         if (card->dev) {
3042                 netif_napi_del(&card->napi);
3043                 unregister_netdev(card->dev);
3044                 card->dev = NULL;
3045         }
3046
3047         qeth_l3_clear_ip_htable(card, 0);
3048         qeth_l3_clear_ipato_list(card);
3049         return;
3050 }
3051
3052 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3053 {
3054         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3055         int rc = 0;
3056         enum qeth_card_states recover_flag;
3057
3058         mutex_lock(&card->discipline_mutex);
3059         mutex_lock(&card->conf_mutex);
3060         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3061         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3062
3063         recover_flag = card->state;
3064         rc = qeth_core_hardsetup_card(card);
3065         if (rc) {
3066                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3067                 rc = -ENODEV;
3068                 goto out_remove;
3069         }
3070
3071         if (!card->dev && qeth_l3_setup_netdev(card)) {
3072                 rc = -ENODEV;
3073                 goto out_remove;
3074         }
3075
3076         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3077                 if (card->info.hwtrap &&
3078                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3079                         card->info.hwtrap = 0;
3080         } else
3081                 card->info.hwtrap = 0;
3082
3083         card->state = CARD_STATE_HARDSETUP;
3084         memset(&card->rx, 0, sizeof(struct qeth_rx));
3085         qeth_print_status_message(card);
3086
3087         /* softsetup */
3088         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3089
3090         rc = qeth_l3_setadapter_parms(card);
3091         if (rc)
3092                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3093         if (!card->options.sniffer) {
3094                 rc = qeth_l3_start_ipassists(card);
3095                 if (rc) {
3096                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3097                         goto out_remove;
3098                 }
3099                 rc = qeth_l3_setrouting_v4(card);
3100                 if (rc)
3101                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3102                 rc = qeth_l3_setrouting_v6(card);
3103                 if (rc)
3104                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3105         }
3106         netif_tx_disable(card->dev);
3107
3108         rc = qeth_init_qdio_queues(card);
3109         if (rc) {
3110                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3111                 rc = -ENODEV;
3112                 goto out_remove;
3113         }
3114         card->state = CARD_STATE_SOFTSETUP;
3115
3116         qeth_set_allowed_threads(card, 0xffffffff, 0);
3117         qeth_l3_recover_ip(card);
3118         if (card->lan_online)
3119                 netif_carrier_on(card->dev);
3120         else
3121                 netif_carrier_off(card->dev);
3122         if (recover_flag == CARD_STATE_RECOVER) {
3123                 rtnl_lock();
3124                 if (recovery_mode)
3125                         __qeth_l3_open(card->dev);
3126                 else
3127                         dev_open(card->dev);
3128                 qeth_l3_set_multicast_list(card->dev);
3129                 qeth_recover_features(card->dev);
3130                 rtnl_unlock();
3131         }
3132         qeth_trace_features(card);
3133         /* let user_space know that device is online */
3134         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3135         mutex_unlock(&card->conf_mutex);
3136         mutex_unlock(&card->discipline_mutex);
3137         return 0;
3138 out_remove:
3139         qeth_l3_stop_card(card, 0);
3140         ccw_device_set_offline(CARD_DDEV(card));
3141         ccw_device_set_offline(CARD_WDEV(card));
3142         ccw_device_set_offline(CARD_RDEV(card));
3143         qdio_free(CARD_DDEV(card));
3144         if (recover_flag == CARD_STATE_RECOVER)
3145                 card->state = CARD_STATE_RECOVER;
3146         else
3147                 card->state = CARD_STATE_DOWN;
3148         mutex_unlock(&card->conf_mutex);
3149         mutex_unlock(&card->discipline_mutex);
3150         return rc;
3151 }
3152
3153 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3154 {
3155         return __qeth_l3_set_online(gdev, 0);
3156 }
3157
3158 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3159                         int recovery_mode)
3160 {
3161         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3162         int rc = 0, rc2 = 0, rc3 = 0;
3163         enum qeth_card_states recover_flag;
3164
3165         mutex_lock(&card->discipline_mutex);
3166         mutex_lock(&card->conf_mutex);
3167         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3168         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3169
3170         if (card->dev && netif_carrier_ok(card->dev))
3171                 netif_carrier_off(card->dev);
3172         recover_flag = card->state;
3173         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3174                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3175                 card->info.hwtrap = 1;
3176         }
3177         qeth_l3_stop_card(card, recovery_mode);
3178         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3179                 rtnl_lock();
3180                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3181                 rtnl_unlock();
3182         }
3183         rc  = ccw_device_set_offline(CARD_DDEV(card));
3184         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3185         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3186         if (!rc)
3187                 rc = (rc2) ? rc2 : rc3;
3188         if (rc)
3189                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3190         qdio_free(CARD_DDEV(card));
3191         if (recover_flag == CARD_STATE_UP)
3192                 card->state = CARD_STATE_RECOVER;
3193         /* let user_space know that device is offline */
3194         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3195         mutex_unlock(&card->conf_mutex);
3196         mutex_unlock(&card->discipline_mutex);
3197         return 0;
3198 }
3199
3200 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3201 {
3202         return __qeth_l3_set_offline(cgdev, 0);
3203 }
3204
3205 static int qeth_l3_recover(void *ptr)
3206 {
3207         struct qeth_card *card;
3208         int rc = 0;
3209
3210         card = (struct qeth_card *) ptr;
3211         QETH_CARD_TEXT(card, 2, "recover1");
3212         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3213         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3214                 return 0;
3215         QETH_CARD_TEXT(card, 2, "recover2");
3216         dev_warn(&card->gdev->dev,
3217                 "A recovery process has been started for the device\n");
3218         qeth_set_recovery_task(card);
3219         __qeth_l3_set_offline(card->gdev, 1);
3220         rc = __qeth_l3_set_online(card->gdev, 1);
3221         if (!rc)
3222                 dev_info(&card->gdev->dev,
3223                         "Device successfully recovered!\n");
3224         else {
3225                 qeth_close_dev(card);
3226                 dev_warn(&card->gdev->dev, "The qeth device driver "
3227                                 "failed to recover an error on the device\n");
3228         }
3229         qeth_clear_recovery_task(card);
3230         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3231         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3232         return 0;
3233 }
3234
3235 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3236 {
3237         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3238
3239         if (card->dev)
3240                 netif_device_detach(card->dev);
3241         qeth_set_allowed_threads(card, 0, 1);
3242         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3243         if (gdev->state == CCWGROUP_OFFLINE)
3244                 return 0;
3245         if (card->state == CARD_STATE_UP) {
3246                 if (card->info.hwtrap)
3247                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3248                 __qeth_l3_set_offline(card->gdev, 1);
3249         } else
3250                 __qeth_l3_set_offline(card->gdev, 0);
3251         return 0;
3252 }
3253
3254 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3255 {
3256         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3257         int rc = 0;
3258
3259         if (gdev->state == CCWGROUP_OFFLINE)
3260                 goto out;
3261
3262         if (card->state == CARD_STATE_RECOVER) {
3263                 rc = __qeth_l3_set_online(card->gdev, 1);
3264                 if (rc) {
3265                         rtnl_lock();
3266                         dev_close(card->dev);
3267                         rtnl_unlock();
3268                 }
3269         } else
3270                 rc = __qeth_l3_set_online(card->gdev, 0);
3271 out:
3272         qeth_set_allowed_threads(card, 0xffffffff, 0);
3273         if (card->dev)
3274                 netif_device_attach(card->dev);
3275         if (rc)
3276                 dev_warn(&card->gdev->dev, "The qeth device driver "
3277                         "failed to recover an error on the device\n");
3278         return rc;
3279 }
3280
3281 /* Returns zero if the command is successfully "consumed" */
3282 static int qeth_l3_control_event(struct qeth_card *card,
3283                                         struct qeth_ipa_cmd *cmd)
3284 {
3285         return 1;
3286 }
3287
3288 struct qeth_discipline qeth_l3_discipline = {
3289         .devtype = &qeth_l3_devtype,
3290         .start_poll = qeth_qdio_start_poll,
3291         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3292         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3293         .process_rx_buffer = qeth_l3_process_inbound_buffer,
3294         .recover = qeth_l3_recover,
3295         .setup = qeth_l3_probe_device,
3296         .remove = qeth_l3_remove_device,
3297         .set_online = qeth_l3_set_online,
3298         .set_offline = qeth_l3_set_offline,
3299         .freeze = qeth_l3_pm_suspend,
3300         .thaw = qeth_l3_pm_resume,
3301         .restore = qeth_l3_pm_resume,
3302         .do_ioctl = qeth_l3_do_ioctl,
3303         .control_event_handler = qeth_l3_control_event,
3304 };
3305 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3306
3307 static int qeth_l3_ip_event(struct notifier_block *this,
3308                             unsigned long event, void *ptr)
3309 {
3310
3311         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3312         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3313         struct qeth_ipaddr *addr;
3314         struct qeth_card *card;
3315
3316         if (dev_net(dev) != &init_net)
3317                 return NOTIFY_DONE;
3318
3319         card = qeth_l3_get_card_from_dev(dev);
3320         if (!card)
3321                 return NOTIFY_DONE;
3322         QETH_CARD_TEXT(card, 3, "ipevent");
3323
3324         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3325         if (addr) {
3326                 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address);
3327                 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask);
3328                 addr->type = QETH_IP_TYPE_NORMAL;
3329         } else
3330                 return NOTIFY_DONE;
3331
3332         switch (event) {
3333         case NETDEV_UP:
3334                 spin_lock_bh(&card->ip_lock);
3335                 qeth_l3_add_ip(card, addr);
3336                 spin_unlock_bh(&card->ip_lock);
3337                 break;
3338         case NETDEV_DOWN:
3339                 spin_lock_bh(&card->ip_lock);
3340                 qeth_l3_delete_ip(card, addr);
3341                 spin_unlock_bh(&card->ip_lock);
3342                 break;
3343         }
3344
3345         kfree(addr);
3346         return NOTIFY_DONE;
3347 }
3348
3349 static struct notifier_block qeth_l3_ip_notifier = {
3350         qeth_l3_ip_event,
3351         NULL,
3352 };
3353
3354 #ifdef CONFIG_QETH_IPV6
3355 /**
3356  * IPv6 event handler
3357  */
3358 static int qeth_l3_ip6_event(struct notifier_block *this,
3359                              unsigned long event, void *ptr)
3360 {
3361         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3362         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3363         struct qeth_ipaddr *addr;
3364         struct qeth_card *card;
3365
3366         card = qeth_l3_get_card_from_dev(dev);
3367         if (!card)
3368                 return NOTIFY_DONE;
3369         QETH_CARD_TEXT(card, 3, "ip6event");
3370         if (!qeth_is_supported(card, IPA_IPV6))
3371                 return NOTIFY_DONE;
3372
3373         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3374         if (addr) {
3375                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3376                 addr->u.a6.pfxlen = ifa->prefix_len;
3377                 addr->type = QETH_IP_TYPE_NORMAL;
3378         } else
3379                 return NOTIFY_DONE;
3380
3381         switch (event) {
3382         case NETDEV_UP:
3383                 spin_lock_bh(&card->ip_lock);
3384                 qeth_l3_add_ip(card, addr);
3385                 spin_unlock_bh(&card->ip_lock);
3386                 break;
3387         case NETDEV_DOWN:
3388                 spin_lock_bh(&card->ip_lock);
3389                 qeth_l3_delete_ip(card, addr);
3390                 spin_unlock_bh(&card->ip_lock);
3391                 break;
3392         }
3393
3394         kfree(addr);
3395         return NOTIFY_DONE;
3396 }
3397
3398 static struct notifier_block qeth_l3_ip6_notifier = {
3399         qeth_l3_ip6_event,
3400         NULL,
3401 };
3402 #endif
3403
3404 static int qeth_l3_register_notifiers(void)
3405 {
3406         int rc;
3407
3408         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3409         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3410         if (rc)
3411                 return rc;
3412 #ifdef CONFIG_QETH_IPV6
3413         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3414         if (rc) {
3415                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3416                 return rc;
3417         }
3418 #else
3419         pr_warn("There is no IPv6 support for the layer 3 discipline\n");
3420 #endif
3421         return 0;
3422 }
3423
3424 static void qeth_l3_unregister_notifiers(void)
3425 {
3426
3427         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3428         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3429 #ifdef CONFIG_QETH_IPV6
3430         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3431 #endif /* QETH_IPV6 */
3432 }
3433
3434 static int __init qeth_l3_init(void)
3435 {
3436         int rc = 0;
3437
3438         pr_info("register layer 3 discipline\n");
3439         rc = qeth_l3_register_notifiers();
3440         return rc;
3441 }
3442
3443 static void __exit qeth_l3_exit(void)
3444 {
3445         qeth_l3_unregister_notifiers();
3446         pr_info("unregister layer 3 discipline\n");
3447 }
3448
3449 module_init(qeth_l3_init);
3450 module_exit(qeth_l3_exit);
3451 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3452 MODULE_DESCRIPTION("qeth layer 3 discipline");
3453 MODULE_LICENSE("GPL");