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/mii.h>
  20 #include <linux/ip.h>
  21 #include <linux/ipv6.h>
  22 #include <linux/inetdevice.h>
  23 #include <linux/igmp.h>
  24 #include <linux/slab.h>
  25 #include <linux/if_vlan.h>
  26
  27 #include <net/ip.h>
  28 #include <net/arp.h>
  29 #include <net/route.h>
  30 #include <net/ip6_fib.h>
  31 #include <net/ip6_checksum.h>
  32 #include <net/iucv/af_iucv.h>
  33 #include <linux/hashtable.h>
  34
  35 #include "qeth_l3.h"
  36
  37
  38 static int qeth_l3_set_offline(struct ccwgroup_device *);
  39 static int qeth_l3_recover(void *);
  40 static int qeth_l3_stop(struct net_device *);
  41 static void qeth_l3_set_multicast_list(struct net_device *);
  42 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  43 static int qeth_l3_register_addr_entry(struct qeth_card *,
  44                 struct qeth_ipaddr *);
  45 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  46                 struct qeth_ipaddr *);
  47 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  48 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  49
  50 static int qeth_l3_isxdigit(char *buf)
  51 {
  52         while (*buf) {
  53                 if (!isxdigit(*buf++))
  54                         return 0;
  55         }
  56         return 1;
  57 }
  58
  59 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  60 {
  61         sprintf(buf, "%pI4", addr);
  62 }
  63
  64 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  65 {
  66         int count = 0, rc = 0;
  67         unsigned int in[4];
  68         char c;
  69
  70         rc = sscanf(buf, "%u.%u.%u.%u%c",
  71                     &in[0], &in[1], &in[2], &in[3], &c);
  72         if (rc != 4 && (rc != 5 || c != '\n'))
  73                 return -EINVAL;
  74         for (count = 0; count < 4; count++) {
  75                 if (in[count] > 255)
  76                         return -EINVAL;
  77                 addr[count] = in[count];
  78         }
  79         return 0;
  80 }
  81
  82 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  83 {
  84         sprintf(buf, "%pI6", addr);
  85 }
  86
  87 static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  88 {
  89         const char *end, *end_tmp, *start;
  90         __u16 *in;
  91         char num[5];
  92         int num2, cnt, out, found, save_cnt;
  93         unsigned short in_tmp[8] = {0, };
  94
  95         cnt = out = found = save_cnt = num2 = 0;
  96         end = start = buf;
  97         in = (__u16 *) addr;
  98         memset(in, 0, 16);
  99         while (*end) {
 100                 end = strchr(start, ':');
 101                 if (end == NULL) {
 102                         end = buf + strlen(buf);
 103                         end_tmp = strchr(start, '\n');
 104                         if (end_tmp != NULL)
 105                                 end = end_tmp;
 106                         out = 1;
 107                 }
 108                 if ((end - start)) {
 109                         memset(num, 0, 5);
 110                         if ((end - start) > 4)
 111                                 return -EINVAL;
 112                         memcpy(num, start, end - start);
 113                         if (!qeth_l3_isxdigit(num))
 114                                 return -EINVAL;
 115                         sscanf(start, "%x", &num2);
 116                         if (found)
 117                                 in_tmp[save_cnt++] = num2;
 118                         else
 119                                 in[cnt++] = num2;
 120                         if (out)
 121                                 break;
 122                 } else {
 123                         if (found)
 124                                 return -EINVAL;
 125                         found = 1;
 126                 }
 127                 start = ++end;
 128         }
 129         if (cnt + save_cnt > 8)
 130                 return -EINVAL;
 131         cnt = 7;
 132         while (save_cnt)
 133                 in[cnt--] = in_tmp[--save_cnt];
 134         return 0;
 135 }
 136
 137 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 138                                 char *buf)
 139 {
 140         if (proto == QETH_PROT_IPV4)
 141                 qeth_l3_ipaddr4_to_string(addr, buf);
 142         else if (proto == QETH_PROT_IPV6)
 143                 qeth_l3_ipaddr6_to_string(addr, buf);
 144 }
 145
 146 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 147                                 __u8 *addr)
 148 {
 149         if (proto == QETH_PROT_IPV4)
 150                 return qeth_l3_string_to_ipaddr4(buf, addr);
 151         else if (proto == QETH_PROT_IPV6)
 152                 return qeth_l3_string_to_ipaddr6(buf, addr);
 153         else
 154                 return -EINVAL;
 155 }
 156
 157 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 158 {
 159         int i, j;
 160         u8 octet;
 161
 162         for (i = 0; i < len; ++i) {
 163                 octet = addr[i];
 164                 for (j = 7; j >= 0; --j) {
 165                         bits[i*8 + j] = octet & 1;
 166                         octet >>= 1;
 167                 }
 168         }
 169 }
 170
 171 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 172                                                 struct qeth_ipaddr *addr)
 173 {
 174         struct qeth_ipato_entry *ipatoe;
 175         u8 addr_bits[128] = {0, };
 176         u8 ipatoe_bits[128] = {0, };
 177         int rc = 0;
 178
 179         if (!card->ipato.enabled)
 180                 return 0;
 181
 182         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 183                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 184         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 185                 if (addr->proto != ipatoe->proto)
 186                         continue;
 187                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 188                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 189                                           4 : 16);
 190                 if (addr->proto == QETH_PROT_IPV4)
 191                         rc = !memcmp(addr_bits, ipatoe_bits,
 192                                      min(32, ipatoe->mask_bits));
 193                 else
 194                         rc = !memcmp(addr_bits, ipatoe_bits,
 195                                      min(128, ipatoe->mask_bits));
 196                 if (rc)
 197                         break;
 198         }
 199         /* invert? */
 200         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 201                 rc = !rc;
 202         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 203                 rc = !rc;
 204
 205         return rc;
 206 }
 207
 208 inline int
 209 qeth_l3_ipaddrs_is_equal(struct qeth_ipaddr *addr1, struct qeth_ipaddr *addr2)
 210 {
 211         return addr1->proto == addr2->proto &&
 212                 !memcmp(&addr1->u, &addr2->u, sizeof(addr1->u))  &&
 213                 !memcmp(&addr1->mac, &addr2->mac, sizeof(addr1->mac));
 214 }
 215
 216 static struct qeth_ipaddr *
 217 qeth_l3_ip_from_hash(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 218 {
 219         struct qeth_ipaddr *addr;
 220
 221         if (tmp_addr->is_multicast) {
 222                 hash_for_each_possible(card->ip_mc_htable,  addr,
 223                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 224                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 225                                 return addr;
 226         } else {
 227                 hash_for_each_possible(card->ip_htable,  addr,
 228                                 hnode, qeth_l3_ipaddr_hash(tmp_addr))
 229                         if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr))
 230                                 return addr;
 231         }
 232
 233         return NULL;
 234 }
 235
 236 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr)
 237 {
 238         int rc = 0;
 239         struct qeth_ipaddr *addr;
 240
 241         QETH_CARD_TEXT(card, 4, "delip");
 242
 243         if (tmp_addr->proto == QETH_PROT_IPV4)
 244                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4);
 245         else {
 246                 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8);
 247                 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8);
 248         }
 249
 250         addr = qeth_l3_ip_from_hash(card, tmp_addr);
 251         if (!addr)
 252                 return -ENOENT;
 253
 254         addr->ref_counter--;
 255         if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0)
 256                 return rc;
 257         if (addr->in_progress)
 258                 return -EINPROGRESS;
 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                 /* qeth_l3_register_addr_entry can go to sleep
 300                  * if we add a IPV4 addr. It is caused by the reason
 301                  * that SETIP ipa cmd starts ARP staff for IPV4 addr.
 302                  * Thus we should unlock spinlock, and make a protection
 303                  * using in_progress variable to indicate that there is
 304                  * an hardware operation with this IPV4 address
 305                  */
 306                 if (addr->proto == QETH_PROT_IPV4) {
 307                         addr->in_progress = 1;
 308                         spin_unlock_bh(&card->ip_lock);
 309                         rc = qeth_l3_register_addr_entry(card, addr);
 310                         spin_lock_bh(&card->ip_lock);
 311                         addr->in_progress = 0;
 312                 } else
 313                         rc = qeth_l3_register_addr_entry(card, addr);
 314
 315                 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) ||
 316                                 (rc == IPA_RC_LAN_OFFLINE)) {
 317                         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 318                         if (addr->ref_counter < 1) {
 319                                 qeth_l3_delete_ip(card, addr);
 320                                 kfree(addr);
 321                         }
 322                 } else {
 323                         hash_del(&addr->hnode);
 324                         kfree(addr);
 325                 }
 326         } else {
 327                         if (addr->type == QETH_IP_TYPE_NORMAL)
 328                                 addr->ref_counter++;
 329         }
 330
 331         return rc;
 332 }
 333
 334
 335 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 336                                 enum qeth_prot_versions prot)
 337 {
 338         struct qeth_ipaddr *addr;
 339
 340         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 341         if (!addr)
 342                 return NULL;
 343
 344         addr->type = QETH_IP_TYPE_NORMAL;
 345         addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 346         addr->proto = prot;
 347
 348         return addr;
 349 }
 350
 351 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover)
 352 {
 353         struct qeth_ipaddr *addr;
 354         struct hlist_node *tmp;
 355         int i;
 356
 357         QETH_CARD_TEXT(card, 4, "clearip");
 358
 359         if (recover && card->options.sniffer)
 360                 return;
 361
 362         spin_lock_bh(&card->ip_lock);
 363
 364         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 365                 if (!recover) {
 366                         hash_del(&addr->hnode);
 367                         kfree(addr);
 368                         continue;
 369                 }
 370                 addr->disp_flag = QETH_DISP_ADDR_ADD;
 371         }
 372
 373         spin_unlock_bh(&card->ip_lock);
 374
 375         spin_lock_bh(&card->mclock);
 376
 377         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
 378                 hash_del(&addr->hnode);
 379                 kfree(addr);
 380         }
 381
 382         spin_unlock_bh(&card->mclock);
 383
 384
 385 }
 386 static void qeth_l3_recover_ip(struct qeth_card *card)
 387 {
 388         struct qeth_ipaddr *addr;
 389         struct hlist_node *tmp;
 390         int i;
 391         int rc;
 392
 393         QETH_CARD_TEXT(card, 4, "recoverip");
 394
 395         spin_lock_bh(&card->ip_lock);
 396
 397         hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) {
 398                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
 399                         if (addr->proto == QETH_PROT_IPV4) {
 400                                 addr->in_progress = 1;
 401                                 spin_unlock_bh(&card->ip_lock);
 402                                 rc = qeth_l3_register_addr_entry(card, addr);
 403                                 spin_lock_bh(&card->ip_lock);
 404                                 addr->in_progress = 0;
 405                         } else
 406                                 rc = qeth_l3_register_addr_entry(card, addr);
 407
 408                         if (!rc) {
 409                                 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 410                                 if (addr->ref_counter < 1) {
 411                                         qeth_l3_delete_ip(card, addr);
 412                                         kfree(addr);
 413                                 }
 414                         } else {
 415                                 hash_del(&addr->hnode);
 416                                 kfree(addr);
 417                         }
 418                 }
 419         }
 420
 421         spin_unlock_bh(&card->ip_lock);
 422
 423 }
 424
 425 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 426                         struct qeth_ipaddr *addr, int ipacmd)
 427 {
 428         int rc;
 429         struct qeth_cmd_buffer *iob;
 430         struct qeth_ipa_cmd *cmd;
 431
 432         QETH_CARD_TEXT(card, 4, "setdelmc");
 433
 434         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 435         if (!iob)
 436                 return -ENOMEM;
 437         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 438         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 439         if (addr->proto == QETH_PROT_IPV6)
 440                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 441                        sizeof(struct in6_addr));
 442         else
 443                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 444
 445         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 446
 447         return rc;
 448 }
 449
 450 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 451 {
 452         int i, j;
 453         for (i = 0; i < 16; i++) {
 454                 j = (len) - (i * 8);
 455                 if (j >= 8)
 456                         netmask[i] = 0xff;
 457                 else if (j > 0)
 458                         netmask[i] = (u8)(0xFF00 >> j);
 459                 else
 460                         netmask[i] = 0;
 461         }
 462 }
 463
 464 static int qeth_l3_send_setdelip(struct qeth_card *card,
 465                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 466 {
 467         int rc;
 468         struct qeth_cmd_buffer *iob;
 469         struct qeth_ipa_cmd *cmd;
 470         __u8 netmask[16];
 471
 472         QETH_CARD_TEXT(card, 4, "setdelip");
 473         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 474
 475         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 476         if (!iob)
 477                 return -ENOMEM;
 478         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 479         if (addr->proto == QETH_PROT_IPV6) {
 480                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 481                        sizeof(struct in6_addr));
 482                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 483                 memcpy(cmd->data.setdelip6.mask, netmask,
 484                        sizeof(struct in6_addr));
 485                 cmd->data.setdelip6.flags = flags;
 486         } else {
 487                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 488                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 489                 cmd->data.setdelip4.flags = flags;
 490         }
 491
 492         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 493
 494         return rc;
 495 }
 496
 497 static int qeth_l3_send_setrouting(struct qeth_card *card,
 498         enum qeth_routing_types type, enum qeth_prot_versions prot)
 499 {
 500         int rc;
 501         struct qeth_ipa_cmd *cmd;
 502         struct qeth_cmd_buffer *iob;
 503
 504         QETH_CARD_TEXT(card, 4, "setroutg");
 505         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 506         if (!iob)
 507                 return -ENOMEM;
 508         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 509         cmd->data.setrtg.type = (type);
 510         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 511
 512         return rc;
 513 }
 514
 515 static int qeth_l3_correct_routing_type(struct qeth_card *card,
 516                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 517 {
 518         if (card->info.type == QETH_CARD_TYPE_IQD) {
 519                 switch (*type) {
 520                 case NO_ROUTER:
 521                 case PRIMARY_CONNECTOR:
 522                 case SECONDARY_CONNECTOR:
 523                 case MULTICAST_ROUTER:
 524                         return 0;
 525                 default:
 526                         goto out_inval;
 527                 }
 528         } else {
 529                 switch (*type) {
 530                 case NO_ROUTER:
 531                 case PRIMARY_ROUTER:
 532                 case SECONDARY_ROUTER:
 533                         return 0;
 534                 case MULTICAST_ROUTER:
 535                         if (qeth_is_ipafunc_supported(card, prot,
 536                                                       IPA_OSA_MC_ROUTER))
 537                                 return 0;
 538                 default:
 539                         goto out_inval;
 540                 }
 541         }
 542 out_inval:
 543         *type = NO_ROUTER;
 544         return -EINVAL;
 545 }
 546
 547 int qeth_l3_setrouting_v4(struct qeth_card *card)
 548 {
 549         int rc;
 550
 551         QETH_CARD_TEXT(card, 3, "setrtg4");
 552
 553         rc = qeth_l3_correct_routing_type(card, &card->options.route4.type,
 554                                   QETH_PROT_IPV4);
 555         if (rc)
 556                 return rc;
 557
 558         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 559                                   QETH_PROT_IPV4);
 560         if (rc) {
 561                 card->options.route4.type = NO_ROUTER;
 562                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 563                         " on %s. Type set to 'no router'.\n", rc,
 564                         QETH_CARD_IFNAME(card));
 565         }
 566         return rc;
 567 }
 568
 569 int qeth_l3_setrouting_v6(struct qeth_card *card)
 570 {
 571         int rc = 0;
 572
 573         QETH_CARD_TEXT(card, 3, "setrtg6");
 574 #ifdef CONFIG_QETH_IPV6
 575
 576         if (!qeth_is_supported(card, IPA_IPV6))
 577                 return 0;
 578         rc = qeth_l3_correct_routing_type(card, &card->options.route6.type,
 579                                   QETH_PROT_IPV6);
 580         if (rc)
 581                 return rc;
 582
 583         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 584                                   QETH_PROT_IPV6);
 585         if (rc) {
 586                 card->options.route6.type = NO_ROUTER;
 587                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 588                         " on %s. Type set to 'no router'.\n", rc,
 589                         QETH_CARD_IFNAME(card));
 590         }
 591 #endif
 592         return rc;
 593 }
 594
 595 /*
 596  * IP address takeover related functions
 597  */
 598 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 599 {
 600         struct qeth_ipato_entry *ipatoe, *tmp;
 601
 602         spin_lock_bh(&card->ip_lock);
 603
 604         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 605                 list_del(&ipatoe->entry);
 606                 kfree(ipatoe);
 607         }
 608
 609         spin_unlock_bh(&card->ip_lock);
 610 }
 611
 612 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 613                                 struct qeth_ipato_entry *new)
 614 {
 615         struct qeth_ipato_entry *ipatoe;
 616         int rc = 0;
 617
 618         QETH_CARD_TEXT(card, 2, "addipato");
 619
 620         spin_lock_bh(&card->ip_lock);
 621
 622         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 623                 if (ipatoe->proto != new->proto)
 624                         continue;
 625                 if (!memcmp(ipatoe->addr, new->addr,
 626                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 627                     (ipatoe->mask_bits == new->mask_bits)) {
 628                         rc = -EEXIST;
 629                         break;
 630                 }
 631         }
 632
 633         if (!rc)
 634                 list_add_tail(&new->entry, &card->ipato.entries);
 635
 636         spin_unlock_bh(&card->ip_lock);
 637
 638         return rc;
 639 }
 640
 641 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 642                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 643 {
 644         struct qeth_ipato_entry *ipatoe, *tmp;
 645
 646         QETH_CARD_TEXT(card, 2, "delipato");
 647
 648         spin_lock_bh(&card->ip_lock);
 649
 650         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 651                 if (ipatoe->proto != proto)
 652                         continue;
 653                 if (!memcmp(ipatoe->addr, addr,
 654                             (proto == QETH_PROT_IPV4)? 4:16) &&
 655                     (ipatoe->mask_bits == mask_bits)) {
 656                         list_del(&ipatoe->entry);
 657                         kfree(ipatoe);
 658                 }
 659         }
 660
 661         spin_unlock_bh(&card->ip_lock);
 662 }
 663
 664 /*
 665  * VIPA related functions
 666  */
 667 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 668               const u8 *addr)
 669 {
 670         struct qeth_ipaddr *ipaddr;
 671         int rc = 0;
 672
 673         ipaddr = qeth_l3_get_addr_buffer(proto);
 674         if (ipaddr) {
 675                 if (proto == QETH_PROT_IPV4) {
 676                         QETH_CARD_TEXT(card, 2, "addvipa4");
 677                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 678                         ipaddr->u.a4.mask = 0;
 679                 } else if (proto == QETH_PROT_IPV6) {
 680                         QETH_CARD_TEXT(card, 2, "addvipa6");
 681                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 682                         ipaddr->u.a6.pfxlen = 0;
 683                 }
 684                 ipaddr->type = QETH_IP_TYPE_VIPA;
 685                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 686                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 687         } else
 688                 return -ENOMEM;
 689
 690         spin_lock_bh(&card->ip_lock);
 691
 692         if (!qeth_l3_ip_from_hash(card, ipaddr))
 693                 rc = -EEXIST;
 694         else
 695                 qeth_l3_add_ip(card, ipaddr);
 696
 697         spin_unlock_bh(&card->ip_lock);
 698
 699         kfree(ipaddr);
 700
 701         return rc;
 702 }
 703
 704 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 705               const u8 *addr)
 706 {
 707         struct qeth_ipaddr *ipaddr;
 708
 709         ipaddr = qeth_l3_get_addr_buffer(proto);
 710         if (ipaddr) {
 711                 if (proto == QETH_PROT_IPV4) {
 712                         QETH_CARD_TEXT(card, 2, "delvipa4");
 713                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 714                         ipaddr->u.a4.mask = 0;
 715                 } else if (proto == QETH_PROT_IPV6) {
 716                         QETH_CARD_TEXT(card, 2, "delvipa6");
 717                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 718                         ipaddr->u.a6.pfxlen = 0;
 719                 }
 720                 ipaddr->type = QETH_IP_TYPE_VIPA;
 721         } else
 722                 return;
 723
 724         spin_lock_bh(&card->ip_lock);
 725         qeth_l3_delete_ip(card, ipaddr);
 726         spin_unlock_bh(&card->ip_lock);
 727
 728         kfree(ipaddr);
 729 }
 730
 731 /*
 732  * proxy ARP related functions
 733  */
 734 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 735               const u8 *addr)
 736 {
 737         struct qeth_ipaddr *ipaddr;
 738         int rc = 0;
 739
 740         ipaddr = qeth_l3_get_addr_buffer(proto);
 741         if (ipaddr) {
 742                 if (proto == QETH_PROT_IPV4) {
 743                         QETH_CARD_TEXT(card, 2, "addrxip4");
 744                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 745                         ipaddr->u.a4.mask = 0;
 746                 } else if (proto == QETH_PROT_IPV6) {
 747                         QETH_CARD_TEXT(card, 2, "addrxip6");
 748                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 749                         ipaddr->u.a6.pfxlen = 0;
 750                 }
 751
 752                 ipaddr->type = QETH_IP_TYPE_RXIP;
 753                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 754                 ipaddr->del_flags = 0;
 755         } else
 756                 return -ENOMEM;
 757
 758         spin_lock_bh(&card->ip_lock);
 759
 760         if (!qeth_l3_ip_from_hash(card, ipaddr))
 761                 rc = -EEXIST;
 762         else
 763                 qeth_l3_add_ip(card, ipaddr);
 764
 765         spin_unlock_bh(&card->ip_lock);
 766
 767         kfree(ipaddr);
 768
 769         return rc;
 770 }
 771
 772 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 773                         const u8 *addr)
 774 {
 775         struct qeth_ipaddr *ipaddr;
 776
 777         ipaddr = qeth_l3_get_addr_buffer(proto);
 778         if (ipaddr) {
 779                 if (proto == QETH_PROT_IPV4) {
 780                         QETH_CARD_TEXT(card, 2, "addrxip4");
 781                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 782                         ipaddr->u.a4.mask = 0;
 783                 } else if (proto == QETH_PROT_IPV6) {
 784                         QETH_CARD_TEXT(card, 2, "addrxip6");
 785                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 786                         ipaddr->u.a6.pfxlen = 0;
 787                 }
 788                 ipaddr->type = QETH_IP_TYPE_RXIP;
 789         } else
 790                 return;
 791
 792         spin_lock_bh(&card->ip_lock);
 793         qeth_l3_delete_ip(card, ipaddr);
 794         spin_unlock_bh(&card->ip_lock);
 795
 796         kfree(ipaddr);
 797 }
 798
 799 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 800                                 struct qeth_ipaddr *addr)
 801 {
 802         char buf[50];
 803         int rc = 0;
 804         int cnt = 3;
 805
 806
 807         if (addr->proto == QETH_PROT_IPV4) {
 808                 QETH_CARD_TEXT(card, 2, "setaddr4");
 809                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 810         } else if (addr->proto == QETH_PROT_IPV6) {
 811                 QETH_CARD_TEXT(card, 2, "setaddr6");
 812                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 813                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 814         } else {
 815                 QETH_CARD_TEXT(card, 2, "setaddr?");
 816                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 817         }
 818         do {
 819                 if (addr->is_multicast)
 820                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 821                 else
 822                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 823                                         addr->set_flags);
 824                 if (rc)
 825                         QETH_CARD_TEXT(card, 2, "failed");
 826         } while ((--cnt > 0) && rc);
 827         if (rc) {
 828                 QETH_CARD_TEXT(card, 2, "FAILED");
 829                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 830                 dev_warn(&card->gdev->dev,
 831                         "Registering IP address %s failed\n", buf);
 832         }
 833         return rc;
 834 }
 835
 836 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 837                                                 struct qeth_ipaddr *addr)
 838 {
 839         int rc = 0;
 840
 841         if (addr->proto == QETH_PROT_IPV4) {
 842                 QETH_CARD_TEXT(card, 2, "deladdr4");
 843                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 844         } else if (addr->proto == QETH_PROT_IPV6) {
 845                 QETH_CARD_TEXT(card, 2, "deladdr6");
 846                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 847                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 848         } else {
 849                 QETH_CARD_TEXT(card, 2, "deladdr?");
 850                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 851         }
 852         if (addr->is_multicast)
 853                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 854         else
 855                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 856                                         addr->del_flags);
 857         if (rc)
 858                 QETH_CARD_TEXT(card, 2, "failed");
 859
 860         return rc;
 861 }
 862
 863 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 864 {
 865         if (cast_type == RTN_MULTICAST)
 866                 return QETH_CAST_MULTICAST;
 867         if (cast_type == RTN_BROADCAST)
 868                 return QETH_CAST_BROADCAST;
 869         return QETH_CAST_UNICAST;
 870 }
 871
 872 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 873 {
 874         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 875         if (cast_type == RTN_MULTICAST)
 876                 return ct | QETH_CAST_MULTICAST;
 877         if (cast_type == RTN_ANYCAST)
 878                 return ct | QETH_CAST_ANYCAST;
 879         if (cast_type == RTN_BROADCAST)
 880                 return ct | QETH_CAST_BROADCAST;
 881         return ct | QETH_CAST_UNICAST;
 882 }
 883
 884 static int qeth_l3_setadapter_parms(struct qeth_card *card)
 885 {
 886         int rc;
 887
 888         QETH_DBF_TEXT(SETUP, 2, "setadprm");
 889
 890         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 891                 dev_info(&card->gdev->dev,
 892                         "set adapter parameters not supported.\n");
 893                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
 894                 return 0;
 895         }
 896         rc = qeth_query_setadapterparms(card);
 897         if (rc) {
 898                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
 899                         "0x%x\n", dev_name(&card->gdev->dev), rc);
 900                 return rc;
 901         }
 902         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
 903                 rc = qeth_setadpparms_change_macaddr(card);
 904                 if (rc)
 905                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
 906                                 " address failed\n");
 907         }
 908
 909         return rc;
 910 }
 911
 912 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
 913                         struct qeth_reply *reply, unsigned long data)
 914 {
 915         struct qeth_ipa_cmd *cmd;
 916
 917         QETH_CARD_TEXT(card, 4, "defadpcb");
 918
 919         cmd = (struct qeth_ipa_cmd *) data;
 920         if (cmd->hdr.return_code == 0) {
 921                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
 922                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
 923                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
 924                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
 925                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
 926         }
 927         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
 928             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
 929                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
 930                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
 931         }
 932         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
 933             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
 934                 card->info.tx_csum_mask =
 935                         cmd->data.setassparms.data.flags_32bit;
 936                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
 937         }
 938
 939         return 0;
 940 }
 941
 942 #ifdef CONFIG_QETH_IPV6
 943 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
 944                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
 945 {
 946         int rc;
 947         struct qeth_cmd_buffer *iob;
 948
 949         QETH_CARD_TEXT(card, 4, "simassp6");
 950         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
 951                                        0, QETH_PROT_IPV6);
 952         if (!iob)
 953                 return -ENOMEM;
 954         rc = qeth_send_setassparms(card, iob, 0, 0,
 955                                    qeth_l3_default_setassparms_cb, NULL);
 956         return rc;
 957 }
 958 #endif
 959
 960 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
 961 {
 962         int rc;
 963
 964         QETH_CARD_TEXT(card, 3, "ipaarp");
 965
 966         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
 967                 dev_info(&card->gdev->dev,
 968                         "ARP processing not supported on %s!\n",
 969                         QETH_CARD_IFNAME(card));
 970                 return 0;
 971         }
 972         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
 973                                           IPA_CMD_ASS_START, 0);
 974         if (rc) {
 975                 dev_warn(&card->gdev->dev,
 976                         "Starting ARP processing support for %s failed\n",
 977                         QETH_CARD_IFNAME(card));
 978         }
 979         return rc;
 980 }
 981
 982 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
 983 {
 984         int rc;
 985
 986         QETH_CARD_TEXT(card, 3, "ipaipfrg");
 987
 988         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
 989                 dev_info(&card->gdev->dev,
 990                         "Hardware IP fragmentation not supported on %s\n",
 991                         QETH_CARD_IFNAME(card));
 992                 return  -EOPNOTSUPP;
 993         }
 994
 995         rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
 996                                           IPA_CMD_ASS_START, 0);
 997         if (rc) {
 998                 dev_warn(&card->gdev->dev,
 999                         "Starting IP fragmentation support for %s failed\n",
1000                         QETH_CARD_IFNAME(card));
1001         } else
1002                 dev_info(&card->gdev->dev,
1003                         "Hardware IP fragmentation enabled \n");
1004         return rc;
1005 }
1006
1007 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1008 {
1009         int rc;
1010
1011         QETH_CARD_TEXT(card, 3, "stsrcmac");
1012
1013         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1014                 dev_info(&card->gdev->dev,
1015                         "Inbound source MAC-address not supported on %s\n",
1016                         QETH_CARD_IFNAME(card));
1017                 return -EOPNOTSUPP;
1018         }
1019
1020         rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC,
1021                                           IPA_CMD_ASS_START, 0);
1022         if (rc)
1023                 dev_warn(&card->gdev->dev,
1024                         "Starting source MAC-address support for %s failed\n",
1025                         QETH_CARD_IFNAME(card));
1026         return rc;
1027 }
1028
1029 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1030 {
1031         int rc = 0;
1032
1033         QETH_CARD_TEXT(card, 3, "strtvlan");
1034
1035         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1036                 dev_info(&card->gdev->dev,
1037                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1038                 return -EOPNOTSUPP;
1039         }
1040
1041         rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO,
1042                                           IPA_CMD_ASS_START, 0);
1043         if (rc) {
1044                 dev_warn(&card->gdev->dev,
1045                         "Starting VLAN support for %s failed\n",
1046                         QETH_CARD_IFNAME(card));
1047         } else {
1048                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1049         }
1050         return rc;
1051 }
1052
1053 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1054 {
1055         int rc;
1056
1057         QETH_CARD_TEXT(card, 3, "stmcast");
1058
1059         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1060                 dev_info(&card->gdev->dev,
1061                         "Multicast not supported on %s\n",
1062                         QETH_CARD_IFNAME(card));
1063                 return -EOPNOTSUPP;
1064         }
1065
1066         rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING,
1067                                           IPA_CMD_ASS_START, 0);
1068         if (rc) {
1069                 dev_warn(&card->gdev->dev,
1070                         "Starting multicast support for %s failed\n",
1071                         QETH_CARD_IFNAME(card));
1072         } else {
1073                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1074                 card->dev->flags |= IFF_MULTICAST;
1075         }
1076         return rc;
1077 }
1078
1079 #ifdef CONFIG_QETH_IPV6
1080 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1081 {
1082         int rc;
1083
1084         QETH_CARD_TEXT(card, 3, "softipv6");
1085
1086         if (card->info.type == QETH_CARD_TYPE_IQD)
1087                 goto out;
1088
1089         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1090         if (rc) {
1091                 dev_err(&card->gdev->dev,
1092                         "Activating IPv6 support for %s failed\n",
1093                         QETH_CARD_IFNAME(card));
1094                 return rc;
1095         }
1096         rc = qeth_send_simple_setassparms(card, IPA_IPV6,
1097                                           IPA_CMD_ASS_START, 3);
1098         if (rc) {
1099                 dev_err(&card->gdev->dev,
1100                         "Activating IPv6 support for %s failed\n",
1101                         QETH_CARD_IFNAME(card));
1102                 return rc;
1103         }
1104         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1105                                                IPA_CMD_ASS_START);
1106         if (rc) {
1107                 dev_err(&card->gdev->dev,
1108                         "Activating IPv6 support for %s failed\n",
1109                          QETH_CARD_IFNAME(card));
1110                 return rc;
1111         }
1112         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1113                                                IPA_CMD_ASS_START);
1114         if (rc) {
1115                 dev_warn(&card->gdev->dev,
1116                         "Enabling the passthrough mode for %s failed\n",
1117                         QETH_CARD_IFNAME(card));
1118                 return rc;
1119         }
1120 out:
1121         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1122         return 0;
1123 }
1124 #endif
1125
1126 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1127 {
1128         int rc = 0;
1129
1130         QETH_CARD_TEXT(card, 3, "strtipv6");
1131
1132         if (!qeth_is_supported(card, IPA_IPV6)) {
1133                 dev_info(&card->gdev->dev,
1134                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1135                 return 0;
1136         }
1137 #ifdef CONFIG_QETH_IPV6
1138         rc = qeth_l3_softsetup_ipv6(card);
1139 #endif
1140         return rc ;
1141 }
1142
1143 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1144 {
1145         int rc;
1146
1147         QETH_CARD_TEXT(card, 3, "stbrdcst");
1148         card->info.broadcast_capable = 0;
1149         if (!qeth_is_supported(card, IPA_FILTERING)) {
1150                 dev_info(&card->gdev->dev,
1151                         "Broadcast not supported on %s\n",
1152                         QETH_CARD_IFNAME(card));
1153                 rc = -EOPNOTSUPP;
1154                 goto out;
1155         }
1156         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1157                                           IPA_CMD_ASS_START, 0);
1158         if (rc) {
1159                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1160                         "%s failed\n", QETH_CARD_IFNAME(card));
1161                 goto out;
1162         }
1163
1164         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1165                                           IPA_CMD_ASS_CONFIGURE, 1);
1166         if (rc) {
1167                 dev_warn(&card->gdev->dev,
1168                         "Setting up broadcast filtering for %s failed\n",
1169                         QETH_CARD_IFNAME(card));
1170                 goto out;
1171         }
1172         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1173         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1174         rc = qeth_send_simple_setassparms(card, IPA_FILTERING,
1175                                           IPA_CMD_ASS_ENABLE, 1);
1176         if (rc) {
1177                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1178                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1179                 goto out;
1180         }
1181         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1182 out:
1183         if (card->info.broadcast_capable)
1184                 card->dev->flags |= IFF_BROADCAST;
1185         else
1186                 card->dev->flags &= ~IFF_BROADCAST;
1187         return rc;
1188 }
1189
1190 static void qeth_l3_start_ipa_checksum(struct qeth_card *card)
1191 {
1192         QETH_CARD_TEXT(card, 3, "strtcsum");
1193         if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)
1194             && (card->dev->features & NETIF_F_RXCSUM))
1195                 qeth_set_rx_csum(card, 1);
1196 }
1197
1198 static void qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1199 {
1200         QETH_CARD_TEXT(card, 3, "strttxcs");
1201         qeth_start_ipa_tx_checksum(card);
1202 }
1203
1204 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1205 {
1206         int rc;
1207
1208         QETH_CARD_TEXT(card, 3, "sttso");
1209
1210         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1211                 dev_info(&card->gdev->dev,
1212                         "Outbound TSO not supported on %s\n",
1213                         QETH_CARD_IFNAME(card));
1214                 rc = -EOPNOTSUPP;
1215         } else {
1216                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1217                                                   IPA_CMD_ASS_START, 0);
1218                 if (rc)
1219                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1220                                 "segmentation offload for %s failed\n",
1221                                 QETH_CARD_IFNAME(card));
1222                 else
1223                         dev_info(&card->gdev->dev,
1224                                 "Outbound TSO enabled\n");
1225         }
1226         if (rc)
1227                 card->dev->features &= ~NETIF_F_TSO;
1228         return rc;
1229 }
1230
1231 static int qeth_l3_start_ipassists(struct qeth_card *card)
1232 {
1233         QETH_CARD_TEXT(card, 3, "strtipas");
1234
1235         if (qeth_set_access_ctrl_online(card, 0))
1236                 return -EIO;
1237         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1238         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1239         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1240         qeth_l3_start_ipa_vlan(card);           /* go on*/
1241         qeth_l3_start_ipa_multicast(card);              /* go on*/
1242         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1243         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1244         qeth_l3_start_ipa_checksum(card);               /* go on*/
1245         qeth_l3_start_ipa_tx_checksum(card);
1246         qeth_l3_start_ipa_tso(card);            /* go on*/
1247         return 0;
1248 }
1249
1250 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1251                 struct qeth_reply *reply, unsigned long data)
1252 {
1253         struct qeth_ipa_cmd *cmd;
1254
1255         cmd = (struct qeth_ipa_cmd *) data;
1256         if (cmd->hdr.return_code == 0)
1257                 memcpy(card->dev->dev_addr,
1258                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1259         else
1260                 eth_random_addr(card->dev->dev_addr);
1261
1262         return 0;
1263 }
1264
1265 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1266 {
1267         int rc = 0;
1268         struct qeth_cmd_buffer *iob;
1269         struct qeth_ipa_cmd *cmd;
1270
1271         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1272
1273         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1274                                      QETH_PROT_IPV6);
1275         if (!iob)
1276                 return -ENOMEM;
1277         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1278         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1279                         card->info.unique_id;
1280
1281         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1282                                 NULL);
1283         return rc;
1284 }
1285
1286 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1287                 struct qeth_reply *reply, unsigned long data)
1288 {
1289         struct qeth_ipa_cmd *cmd;
1290
1291         cmd = (struct qeth_ipa_cmd *) data;
1292         if (cmd->hdr.return_code == 0)
1293                 card->info.unique_id = *((__u16 *)
1294                                 &cmd->data.create_destroy_addr.unique_id[6]);
1295         else {
1296                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1297                                         UNIQUE_ID_NOT_BY_CARD;
1298                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1299                         "generate a unique ID\n");
1300         }
1301         return 0;
1302 }
1303
1304 static int qeth_l3_get_unique_id(struct qeth_card *card)
1305 {
1306         int rc = 0;
1307         struct qeth_cmd_buffer *iob;
1308         struct qeth_ipa_cmd *cmd;
1309
1310         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1311
1312         if (!qeth_is_supported(card, IPA_IPV6)) {
1313                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1314                                         UNIQUE_ID_NOT_BY_CARD;
1315                 return 0;
1316         }
1317
1318         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1319                                      QETH_PROT_IPV6);
1320         if (!iob)
1321                 return -ENOMEM;
1322         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1323         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1324                         card->info.unique_id;
1325
1326         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1327         return rc;
1328 }
1329
1330 static int
1331 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1332                             unsigned long data)
1333 {
1334         struct qeth_ipa_cmd        *cmd;
1335         __u16 rc;
1336
1337         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1338
1339         cmd = (struct qeth_ipa_cmd *)data;
1340         rc = cmd->hdr.return_code;
1341         if (rc)
1342                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1343         switch (cmd->data.diagass.action) {
1344         case QETH_DIAGS_CMD_TRACE_QUERY:
1345                 break;
1346         case QETH_DIAGS_CMD_TRACE_DISABLE:
1347                 switch (rc) {
1348                 case 0:
1349                 case IPA_RC_INVALID_SUBCMD:
1350                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1351                         dev_info(&card->gdev->dev, "The HiperSockets network "
1352                                 "traffic analyzer is deactivated\n");
1353                         break;
1354                 default:
1355                         break;
1356                 }
1357                 break;
1358         case QETH_DIAGS_CMD_TRACE_ENABLE:
1359                 switch (rc) {
1360                 case 0:
1361                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1362                         dev_info(&card->gdev->dev, "The HiperSockets network "
1363                                 "traffic analyzer is activated\n");
1364                         break;
1365                 case IPA_RC_HARDWARE_AUTH_ERROR:
1366                         dev_warn(&card->gdev->dev, "The device is not "
1367                                 "authorized to run as a HiperSockets network "
1368                                 "traffic analyzer\n");
1369                         break;
1370                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1371                         dev_warn(&card->gdev->dev, "A HiperSockets "
1372                                 "network traffic analyzer is already "
1373                                 "active in the HiperSockets LAN\n");
1374                         break;
1375                 default:
1376                         break;
1377                 }
1378                 break;
1379         default:
1380                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1381                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1382         }
1383
1384         return 0;
1385 }
1386
1387 static int
1388 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1389 {
1390         struct qeth_cmd_buffer *iob;
1391         struct qeth_ipa_cmd    *cmd;
1392
1393         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1394
1395         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1396         if (!iob)
1397                 return -ENOMEM;
1398         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1399         cmd->data.diagass.subcmd_len = 16;
1400         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1401         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1402         cmd->data.diagass.action = diags_cmd;
1403         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1404 }
1405
1406 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac)
1407 {
1408         ip_eth_mc_map(ipm, mac);
1409 }
1410
1411 static void qeth_l3_mark_all_mc_to_be_deleted(struct qeth_card *card)
1412 {
1413         struct qeth_ipaddr *addr;
1414         int i;
1415
1416         hash_for_each(card->ip_mc_htable, i, addr, hnode)
1417                 addr->disp_flag = QETH_DISP_ADDR_DELETE;
1418
1419 }
1420
1421 static void qeth_l3_add_all_new_mc(struct qeth_card *card)
1422 {
1423         struct qeth_ipaddr *addr;
1424         struct hlist_node *tmp;
1425         int i;
1426         int rc;
1427
1428         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1429                 if (addr->disp_flag == QETH_DISP_ADDR_ADD) {
1430                         rc = qeth_l3_register_addr_entry(card, addr);
1431                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
1432                                 addr->ref_counter = 1;
1433                         else {
1434                                 hash_del(&addr->hnode);
1435                                 kfree(addr);
1436                         }
1437                 }
1438         }
1439
1440 }
1441
1442 static void qeth_l3_delete_nonused_mc(struct qeth_card *card)
1443 {
1444         struct qeth_ipaddr *addr;
1445         struct hlist_node *tmp;
1446         int i;
1447         int rc;
1448
1449         hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) {
1450                 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) {
1451                         rc = qeth_l3_deregister_addr_entry(card, addr);
1452                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) {
1453                                 hash_del(&addr->hnode);
1454                                 kfree(addr);
1455                         }
1456                 }
1457         }
1458
1459 }
1460
1461
1462 static void
1463 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev)
1464 {
1465         struct ip_mc_list *im4;
1466         struct qeth_ipaddr *tmp, *ipm;
1467         char buf[MAX_ADDR_LEN];
1468
1469         QETH_CARD_TEXT(card, 4, "addmc");
1470
1471         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1472                 if (!tmp)
1473                         return;
1474
1475         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1476              im4 = rcu_dereference(im4->next_rcu)) {
1477                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf);
1478
1479                 tmp->u.a4.addr = im4->multiaddr;
1480                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1481
1482                 ipm = qeth_l3_ip_from_hash(card, tmp);
1483                 if (ipm) {
1484                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1485                 } else {
1486                         ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1487                         if (!ipm)
1488                                 continue;
1489                         memcpy(ipm->mac, buf, sizeof(tmp->mac));
1490                         ipm->u.a4.addr = im4->multiaddr;
1491                         ipm->is_multicast = 1;
1492                         ipm->disp_flag = QETH_DISP_ADDR_ADD;
1493                         hash_add(card->ip_mc_htable,
1494                                         &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1495                 }
1496         }
1497
1498         kfree(tmp);
1499 }
1500
1501 /* called with rcu_read_lock */
1502 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1503 {
1504         struct in_device *in_dev;
1505         u16 vid;
1506
1507         QETH_CARD_TEXT(card, 4, "addmcvl");
1508
1509         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1510                 return;
1511
1512         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1513                 struct net_device *netdev;
1514
1515                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1516                                               vid);
1517                 if (netdev == NULL ||
1518                     !(netdev->flags & IFF_UP))
1519                         continue;
1520                 in_dev = __in_dev_get_rcu(netdev);
1521                 if (!in_dev)
1522                         continue;
1523                 qeth_l3_add_mc_to_hash(card, in_dev);
1524         }
1525 }
1526
1527 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1528 {
1529         struct in_device *in4_dev;
1530
1531         QETH_CARD_TEXT(card, 4, "chkmcv4");
1532
1533         rcu_read_lock();
1534         in4_dev = __in_dev_get_rcu(card->dev);
1535         if (in4_dev == NULL)
1536                 goto unlock;
1537         qeth_l3_add_mc_to_hash(card, in4_dev);
1538         qeth_l3_add_vlan_mc(card);
1539 unlock:
1540         rcu_read_unlock();
1541 }
1542
1543 #ifdef CONFIG_QETH_IPV6
1544 static void
1545 qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev)
1546 {
1547         struct qeth_ipaddr *ipm;
1548         struct ifmcaddr6 *im6;
1549         struct qeth_ipaddr *tmp;
1550         char buf[MAX_ADDR_LEN];
1551
1552         QETH_CARD_TEXT(card, 4, "addmc6");
1553
1554         tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1555                 if (!tmp)
1556                         return;
1557
1558         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1559                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1560
1561                 memcpy(tmp->mac, buf, sizeof(tmp->mac));
1562                 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr,
1563                        sizeof(struct in6_addr));
1564                 tmp->is_multicast = 1;
1565
1566                 ipm = qeth_l3_ip_from_hash(card, tmp);
1567                 if (ipm) {
1568                         ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
1569                         continue;
1570                 }
1571
1572                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1573                 if (!ipm)
1574                         continue;
1575
1576                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1577                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1578                        sizeof(struct in6_addr));
1579                 ipm->is_multicast = 1;
1580                 ipm->disp_flag = QETH_DISP_ADDR_ADD;
1581                 hash_add(card->ip_mc_htable,
1582                                 &ipm->hnode, qeth_l3_ipaddr_hash(ipm));
1583
1584         }
1585         kfree(tmp);
1586 }
1587
1588 /* called with rcu_read_lock */
1589 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1590 {
1591         struct inet6_dev *in_dev;
1592         u16 vid;
1593
1594         QETH_CARD_TEXT(card, 4, "admc6vl");
1595
1596         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1597                 return;
1598
1599         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1600                 struct net_device *netdev;
1601
1602                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1603                                               vid);
1604                 if (netdev == NULL ||
1605                     !(netdev->flags & IFF_UP))
1606                         continue;
1607                 in_dev = in6_dev_get(netdev);
1608                 if (!in_dev)
1609                         continue;
1610                 read_lock_bh(&in_dev->lock);
1611                 qeth_l3_add_mc6_to_hash(card, in_dev);
1612                 read_unlock_bh(&in_dev->lock);
1613                 in6_dev_put(in_dev);
1614         }
1615 }
1616
1617 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1618 {
1619         struct inet6_dev *in6_dev;
1620
1621         QETH_CARD_TEXT(card, 4, "chkmcv6");
1622
1623         if (!qeth_is_supported(card, IPA_IPV6))
1624                 return ;
1625         in6_dev = in6_dev_get(card->dev);
1626         if (!in6_dev)
1627                 return;
1628
1629         rcu_read_lock();
1630         read_lock_bh(&in6_dev->lock);
1631         qeth_l3_add_mc6_to_hash(card, in6_dev);
1632         qeth_l3_add_vlan_mc6(card);
1633         read_unlock_bh(&in6_dev->lock);
1634         rcu_read_unlock();
1635         in6_dev_put(in6_dev);
1636 }
1637 #endif /* CONFIG_QETH_IPV6 */
1638
1639 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1640                         unsigned short vid)
1641 {
1642         struct in_device *in_dev;
1643         struct in_ifaddr *ifa;
1644         struct qeth_ipaddr *addr;
1645         struct net_device *netdev;
1646
1647         QETH_CARD_TEXT(card, 4, "frvaddr4");
1648
1649         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1650         if (!netdev)
1651                 return;
1652         in_dev = in_dev_get(netdev);
1653         if (!in_dev)
1654                 return;
1655
1656         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1657         if (!addr)
1658                 return;
1659
1660         spin_lock_bh(&card->ip_lock);
1661
1662         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1663                 addr->u.a4.addr = ifa->ifa_address;
1664                 addr->u.a4.mask = ifa->ifa_mask;
1665                 addr->type = QETH_IP_TYPE_NORMAL;
1666                 qeth_l3_delete_ip(card, addr);
1667         }
1668
1669         spin_unlock_bh(&card->ip_lock);
1670
1671         kfree(addr);
1672         in_dev_put(in_dev);
1673 }
1674
1675 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1676                         unsigned short vid)
1677 {
1678 #ifdef CONFIG_QETH_IPV6
1679         struct inet6_dev *in6_dev;
1680         struct inet6_ifaddr *ifa;
1681         struct qeth_ipaddr *addr;
1682         struct net_device *netdev;
1683
1684         QETH_CARD_TEXT(card, 4, "frvaddr6");
1685
1686         netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid);
1687         if (!netdev)
1688                 return;
1689
1690         in6_dev = in6_dev_get(netdev);
1691         if (!in6_dev)
1692                 return;
1693
1694         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1695         if (!addr)
1696                 return;
1697
1698         spin_lock_bh(&card->ip_lock);
1699
1700         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1701                 memcpy(&addr->u.a6.addr, &ifa->addr,
1702                        sizeof(struct in6_addr));
1703                 addr->u.a6.pfxlen = ifa->prefix_len;
1704                 addr->type = QETH_IP_TYPE_NORMAL;
1705                 qeth_l3_delete_ip(card, addr);
1706         }
1707
1708         spin_unlock_bh(&card->ip_lock);
1709
1710         kfree(addr);
1711         in6_dev_put(in6_dev);
1712 #endif /* CONFIG_QETH_IPV6 */
1713 }
1714
1715 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1716                         unsigned short vid)
1717 {
1718         rcu_read_lock();
1719         qeth_l3_free_vlan_addresses4(card, vid);
1720         qeth_l3_free_vlan_addresses6(card, vid);
1721         rcu_read_unlock();
1722 }
1723
1724 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev,
1725                                    __be16 proto, u16 vid)
1726 {
1727         struct qeth_card *card = dev->ml_priv;
1728
1729         set_bit(vid, card->active_vlans);
1730         return 0;
1731 }
1732
1733 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev,
1734                                     __be16 proto, u16 vid)
1735 {
1736         struct qeth_card *card = dev->ml_priv;
1737
1738         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1739
1740         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1741                 QETH_CARD_TEXT(card, 3, "kidREC");
1742                 return 0;
1743         }
1744         /* unregister IP addresses of vlan device */
1745         qeth_l3_free_vlan_addresses(card, vid);
1746         clear_bit(vid, card->active_vlans);
1747         qeth_l3_set_multicast_list(card->dev);
1748         return 0;
1749 }
1750
1751 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1752                         struct sk_buff *skb, struct qeth_hdr *hdr,
1753                         unsigned short *vlan_id)
1754 {
1755         __be16 prot;
1756         struct iphdr *ip_hdr;
1757         unsigned char tg_addr[MAX_ADDR_LEN];
1758         int is_vlan = 0;
1759
1760         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1761                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1762                               ETH_P_IP);
1763                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1764                 case QETH_CAST_MULTICAST:
1765                         switch (prot) {
1766 #ifdef CONFIG_QETH_IPV6
1767                         case __constant_htons(ETH_P_IPV6):
1768                                 ndisc_mc_map((struct in6_addr *)
1769                                      skb->data + 24,
1770                                      tg_addr, card->dev, 0);
1771                                 break;
1772 #endif
1773                         case __constant_htons(ETH_P_IP):
1774                                 ip_hdr = (struct iphdr *)skb->data;
1775                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1776                                 break;
1777                         default:
1778                                 memcpy(tg_addr, card->dev->broadcast,
1779                                         card->dev->addr_len);
1780                         }
1781                         card->stats.multicast++;
1782                         skb->pkt_type = PACKET_MULTICAST;
1783                         break;
1784                 case QETH_CAST_BROADCAST:
1785                         memcpy(tg_addr, card->dev->broadcast,
1786                                 card->dev->addr_len);
1787                         card->stats.multicast++;
1788                         skb->pkt_type = PACKET_BROADCAST;
1789                         break;
1790                 case QETH_CAST_UNICAST:
1791                 case QETH_CAST_ANYCAST:
1792                 case QETH_CAST_NOCAST:
1793                 default:
1794                         if (card->options.sniffer)
1795                                 skb->pkt_type = PACKET_OTHERHOST;
1796                         else
1797                                 skb->pkt_type = PACKET_HOST;
1798                         memcpy(tg_addr, card->dev->dev_addr,
1799                                 card->dev->addr_len);
1800                 }
1801                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1802                         card->dev->header_ops->create(skb, card->dev, prot,
1803                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1804                                 card->dev->addr_len);
1805                 else
1806                         card->dev->header_ops->create(skb, card->dev, prot,
1807                                 tg_addr, "FAKELL", card->dev->addr_len);
1808         }
1809
1810         skb->protocol = eth_type_trans(skb, card->dev);
1811
1812         if (hdr->hdr.l3.ext_flags &
1813             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1814                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1815                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1816                 is_vlan = 1;
1817         }
1818
1819         if (card->dev->features & NETIF_F_RXCSUM) {
1820                 if ((hdr->hdr.l3.ext_flags &
1821                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1822                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1823                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1824                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1825                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1826                 else
1827                         skb->ip_summed = CHECKSUM_NONE;
1828         } else
1829                 skb->ip_summed = CHECKSUM_NONE;
1830         return is_vlan;
1831 }
1832
1833 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1834                                 int budget, int *done)
1835 {
1836         int work_done = 0;
1837         struct sk_buff *skb;
1838         struct qeth_hdr *hdr;
1839         __u16 vlan_tag = 0;
1840         int is_vlan;
1841         unsigned int len;
1842         __u16 magic;
1843
1844         *done = 0;
1845         WARN_ON_ONCE(!budget);
1846         while (budget) {
1847                 skb = qeth_core_get_next_skb(card,
1848                         &card->qdio.in_q->bufs[card->rx.b_index],
1849                         &card->rx.b_element, &card->rx.e_offset, &hdr);
1850                 if (!skb) {
1851                         *done = 1;
1852                         break;
1853                 }
1854                 skb->dev = card->dev;
1855                 switch (hdr->hdr.l3.id) {
1856                 case QETH_HEADER_TYPE_LAYER3:
1857                         magic = *(__u16 *)skb->data;
1858                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
1859                             (magic == ETH_P_AF_IUCV)) {
1860                                 skb->protocol = ETH_P_AF_IUCV;
1861                                 skb->pkt_type = PACKET_HOST;
1862                                 skb->mac_header = NET_SKB_PAD;
1863                                 skb->dev = card->dev;
1864                                 len = skb->len;
1865                                 card->dev->header_ops->create(skb, card->dev, 0,
1866                                         card->dev->dev_addr, "FAKELL",
1867                                         card->dev->addr_len);
1868                                 netif_receive_skb(skb);
1869                         } else {
1870                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
1871                                                       &vlan_tag);
1872                                 len = skb->len;
1873                                 if (is_vlan && !card->options.sniffer)
1874                                         __vlan_hwaccel_put_tag(skb,
1875                                                 htons(ETH_P_8021Q), vlan_tag);
1876                                 napi_gro_receive(&card->napi, skb);
1877                         }
1878                         break;
1879                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
1880                         skb->pkt_type = PACKET_HOST;
1881                         skb->protocol = eth_type_trans(skb, skb->dev);
1882                         len = skb->len;
1883                         netif_receive_skb(skb);
1884                         break;
1885                 default:
1886                         dev_kfree_skb_any(skb);
1887                         QETH_CARD_TEXT(card, 3, "inbunkno");
1888                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
1889                         continue;
1890                 }
1891                 work_done++;
1892                 budget--;
1893                 card->stats.rx_packets++;
1894                 card->stats.rx_bytes += len;
1895         }
1896         return work_done;
1897 }
1898
1899 static int qeth_l3_poll(struct napi_struct *napi, int budget)
1900 {
1901         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
1902         int work_done = 0;
1903         struct qeth_qdio_buffer *buffer;
1904         int done;
1905         int new_budget = budget;
1906
1907         if (card->options.performance_stats) {
1908                 card->perf_stats.inbound_cnt++;
1909                 card->perf_stats.inbound_start_time = qeth_get_micros();
1910         }
1911
1912         while (1) {
1913                 if (!card->rx.b_count) {
1914                         card->rx.qdio_err = 0;
1915                         card->rx.b_count = qdio_get_next_buffers(
1916                                 card->data.ccwdev, 0, &card->rx.b_index,
1917                                 &card->rx.qdio_err);
1918                         if (card->rx.b_count <= 0) {
1919                                 card->rx.b_count = 0;
1920                                 break;
1921                         }
1922                         card->rx.b_element =
1923                                 &card->qdio.in_q->bufs[card->rx.b_index]
1924                                 .buffer->element[0];
1925                         card->rx.e_offset = 0;
1926                 }
1927
1928                 while (card->rx.b_count) {
1929                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
1930                         if (!(card->rx.qdio_err &&
1931                             qeth_check_qdio_errors(card, buffer->buffer,
1932                             card->rx.qdio_err, "qinerr")))
1933                                 work_done += qeth_l3_process_inbound_buffer(
1934                                         card, new_budget, &done);
1935                         else
1936                                 done = 1;
1937
1938                         if (done) {
1939                                 if (card->options.performance_stats)
1940                                         card->perf_stats.bufs_rec++;
1941                                 qeth_put_buffer_pool_entry(card,
1942                                         buffer->pool_entry);
1943                                 qeth_queue_input_buffer(card, card->rx.b_index);
1944                                 card->rx.b_count--;
1945                                 if (card->rx.b_count) {
1946                                         card->rx.b_index =
1947                                                 (card->rx.b_index + 1) %
1948                                                 QDIO_MAX_BUFFERS_PER_Q;
1949                                         card->rx.b_element =
1950                                                 &card->qdio.in_q
1951                                                 ->bufs[card->rx.b_index]
1952                                                 .buffer->element[0];
1953                                         card->rx.e_offset = 0;
1954                                 }
1955                         }
1956
1957                         if (work_done >= budget)
1958                                 goto out;
1959                         else
1960                                 new_budget = budget - work_done;
1961                 }
1962         }
1963
1964         napi_complete(napi);
1965         if (qdio_start_irq(card->data.ccwdev, 0))
1966                 napi_schedule(&card->napi);
1967 out:
1968         if (card->options.performance_stats)
1969                 card->perf_stats.inbound_time += qeth_get_micros() -
1970                         card->perf_stats.inbound_start_time;
1971         return work_done;
1972 }
1973
1974 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
1975                         struct qeth_card *card)
1976 {
1977         int rc = 0;
1978         u16 vid;
1979
1980         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1981                 struct net_device *netdev;
1982
1983                 rcu_read_lock();
1984                 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q),
1985                                               vid);
1986                 rcu_read_unlock();
1987                 if (netdev == dev) {
1988                         rc = QETH_VLAN_CARD;
1989                         break;
1990                 }
1991         }
1992
1993         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
1994                 return 0;
1995
1996         return rc;
1997 }
1998
1999 static int qeth_l3_verify_dev(struct net_device *dev)
2000 {
2001         struct qeth_card *card;
2002         int rc = 0;
2003         unsigned long flags;
2004
2005         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2006         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2007                 if (card->dev == dev) {
2008                         rc = QETH_REAL_CARD;
2009                         break;
2010                 }
2011                 rc = qeth_l3_verify_vlan_dev(dev, card);
2012                 if (rc)
2013                         break;
2014         }
2015         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2016
2017         return rc;
2018 }
2019
2020 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2021 {
2022         struct qeth_card *card = NULL;
2023         int rc;
2024
2025         rc = qeth_l3_verify_dev(dev);
2026         if (rc == QETH_REAL_CARD)
2027                 card = dev->ml_priv;
2028         else if (rc == QETH_VLAN_CARD)
2029                 card = vlan_dev_real_dev(dev)->ml_priv;
2030         if (card && card->options.layer2)
2031                 card = NULL;
2032         if (card)
2033                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2034         return card ;
2035 }
2036
2037 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2038 {
2039         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2040         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2041
2042         qeth_set_allowed_threads(card, 0, 1);
2043         if (card->options.sniffer &&
2044             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2045                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2046         if (card->read.state == CH_STATE_UP &&
2047             card->write.state == CH_STATE_UP &&
2048             (card->state == CARD_STATE_UP)) {
2049                 if (recovery_mode)
2050                         qeth_l3_stop(card->dev);
2051                 else {
2052                         rtnl_lock();
2053                         dev_close(card->dev);
2054                         rtnl_unlock();
2055                 }
2056                 card->state = CARD_STATE_SOFTSETUP;
2057         }
2058         if (card->state == CARD_STATE_SOFTSETUP) {
2059                 qeth_l3_clear_ip_htable(card, 1);
2060                 qeth_clear_ipacmd_list(card);
2061                 card->state = CARD_STATE_HARDSETUP;
2062         }
2063         if (card->state == CARD_STATE_HARDSETUP) {
2064                 qeth_qdio_clear_card(card, 0);
2065                 qeth_clear_qdio_buffers(card);
2066                 qeth_clear_working_pool_list(card);
2067                 card->state = CARD_STATE_DOWN;
2068         }
2069         if (card->state == CARD_STATE_DOWN) {
2070                 qeth_clear_cmd_buffers(&card->read);
2071                 qeth_clear_cmd_buffers(&card->write);
2072         }
2073 }
2074
2075 /*
2076  * test for and Switch promiscuous mode (on or off)
2077  *  either for guestlan or HiperSocket Sniffer
2078  */
2079 static void
2080 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2081 {
2082         struct net_device *dev = card->dev;
2083
2084         if (((dev->flags & IFF_PROMISC) &&
2085              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2086             (!(dev->flags & IFF_PROMISC) &&
2087              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2088                 return;
2089
2090         if (card->info.guestlan) {              /* Guestlan trace */
2091                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2092                         qeth_setadp_promisc_mode(card);
2093         } else if (card->options.sniffer &&     /* HiperSockets trace */
2094                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2095                 if (dev->flags & IFF_PROMISC) {
2096                         QETH_CARD_TEXT(card, 3, "+promisc");
2097                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2098                 } else {
2099                         QETH_CARD_TEXT(card, 3, "-promisc");
2100                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2101                 }
2102         }
2103 }
2104
2105 static void qeth_l3_set_multicast_list(struct net_device *dev)
2106 {
2107         struct qeth_card *card = dev->ml_priv;
2108
2109         QETH_CARD_TEXT(card, 3, "setmulti");
2110         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2111             (card->state != CARD_STATE_UP))
2112                 return;
2113         if (!card->options.sniffer) {
2114
2115                 spin_lock_bh(&card->mclock);
2116
2117                 qeth_l3_mark_all_mc_to_be_deleted(card);
2118
2119                 qeth_l3_add_multicast_ipv4(card);
2120 #ifdef CONFIG_QETH_IPV6
2121                 qeth_l3_add_multicast_ipv6(card);
2122 #endif
2123                 qeth_l3_delete_nonused_mc(card);
2124                 qeth_l3_add_all_new_mc(card);
2125
2126                 spin_unlock_bh(&card->mclock);
2127
2128                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2129                         return;
2130         }
2131         qeth_l3_handle_promisc_mode(card);
2132 }
2133
2134 static const char *qeth_l3_arp_get_error_cause(int *rc)
2135 {
2136         switch (*rc) {
2137         case QETH_IPA_ARP_RC_FAILED:
2138                 *rc = -EIO;
2139                 return "operation failed";
2140         case QETH_IPA_ARP_RC_NOTSUPP:
2141                 *rc = -EOPNOTSUPP;
2142                 return "operation not supported";
2143         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2144                 *rc = -EINVAL;
2145                 return "argument out of range";
2146         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2147                 *rc = -EOPNOTSUPP;
2148                 return "query operation not supported";
2149         case QETH_IPA_ARP_RC_Q_NO_DATA:
2150                 *rc = -ENOENT;
2151                 return "no query data available";
2152         default:
2153                 return "unknown error";
2154         }
2155 }
2156
2157 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2158 {
2159         int tmp;
2160         int rc;
2161
2162         QETH_CARD_TEXT(card, 3, "arpstnoe");
2163
2164         /*
2165          * currently GuestLAN only supports the ARP assist function
2166          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2167          * thus we say EOPNOTSUPP for this ARP function
2168          */
2169         if (card->info.guestlan)
2170                 return -EOPNOTSUPP;
2171         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2172                 return -EOPNOTSUPP;
2173         }
2174         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2175                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2176                                           no_entries);
2177         if (rc) {
2178                 tmp = rc;
2179                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2180                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2181                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2182         }
2183         return rc;
2184 }
2185
2186 static __u32 get_arp_entry_size(struct qeth_card *card,
2187                         struct qeth_arp_query_data *qdata,
2188                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2189 {
2190         __u32 rc;
2191         __u8 is_hsi;
2192
2193         is_hsi = qdata->reply_bits == 5;
2194         if (type->ip == QETHARP_IP_ADDR_V4) {
2195                 QETH_CARD_TEXT(card, 4, "arpev4");
2196                 if (strip_entries) {
2197                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2198                                 sizeof(struct qeth_arp_qi_entry7_short);
2199                 } else {
2200                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2201                                 sizeof(struct qeth_arp_qi_entry7);
2202                 }
2203         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2204                 QETH_CARD_TEXT(card, 4, "arpev6");
2205                 if (strip_entries) {
2206                         rc = is_hsi ?
2207                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2208                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2209                 } else {
2210                         rc = is_hsi ?
2211                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2212                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2213                 }
2214         } else {
2215                 QETH_CARD_TEXT(card, 4, "arpinv");
2216                 rc = 0;
2217         }
2218
2219         return rc;
2220 }
2221
2222 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2223 {
2224         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2225                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2226 }
2227
2228 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2229                 struct qeth_reply *reply, unsigned long data)
2230 {
2231         struct qeth_ipa_cmd *cmd;
2232         struct qeth_arp_query_data *qdata;
2233         struct qeth_arp_query_info *qinfo;
2234         int i;
2235         int e;
2236         int entrybytes_done;
2237         int stripped_bytes;
2238         __u8 do_strip_entries;
2239
2240         QETH_CARD_TEXT(card, 3, "arpquecb");
2241
2242         qinfo = (struct qeth_arp_query_info *) reply->param;
2243         cmd = (struct qeth_ipa_cmd *) data;
2244         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2245         if (cmd->hdr.return_code) {
2246                 QETH_CARD_TEXT(card, 4, "arpcberr");
2247                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2248                 return 0;
2249         }
2250         if (cmd->data.setassparms.hdr.return_code) {
2251                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2252                 QETH_CARD_TEXT(card, 4, "setaperr");
2253                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2254                 return 0;
2255         }
2256         qdata = &cmd->data.setassparms.data.query_arp;
2257         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2258
2259         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2260         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2261         entrybytes_done = 0;
2262         for (e = 0; e < qdata->no_entries; ++e) {
2263                 char *cur_entry;
2264                 __u32 esize;
2265                 struct qeth_arp_entrytype *etype;
2266
2267                 cur_entry = &qdata->data + entrybytes_done;
2268                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2269                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2270                         QETH_CARD_TEXT(card, 4, "pmis");
2271                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2272                         break;
2273                 }
2274                 esize = get_arp_entry_size(card, qdata, etype,
2275                         do_strip_entries);
2276                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2277                 if (!esize)
2278                         break;
2279
2280                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2281                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2282                         cmd->hdr.return_code = IPA_RC_ENOMEM;
2283                         goto out_error;
2284                 }
2285
2286                 memcpy(qinfo->udata + qinfo->udata_offset,
2287                         &qdata->data + entrybytes_done + stripped_bytes,
2288                         esize);
2289                 entrybytes_done += esize + stripped_bytes;
2290                 qinfo->udata_offset += esize;
2291                 ++qinfo->no_entries;
2292         }
2293         /* check if all replies received ... */
2294         if (cmd->data.setassparms.hdr.seq_no <
2295             cmd->data.setassparms.hdr.number_of_replies)
2296                 return 1;
2297         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2298         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2299         /* keep STRIP_ENTRIES flag so the user program can distinguish
2300          * stripped entries from normal ones */
2301         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2302                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2303         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2304         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2305         return 0;
2306 out_error:
2307         i = 0;
2308         memcpy(qinfo->udata, &i, 4);
2309         return 0;
2310 }
2311
2312 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2313                 struct qeth_cmd_buffer *iob, int len,
2314                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2315                         unsigned long),
2316                 void *reply_param)
2317 {
2318         QETH_CARD_TEXT(card, 4, "sendarp");
2319
2320         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2321         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2322                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2323         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2324                                       reply_cb, reply_param);
2325 }
2326
2327 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2328         enum qeth_prot_versions prot,
2329         struct qeth_arp_query_info *qinfo)
2330 {
2331         struct qeth_cmd_buffer *iob;
2332         struct qeth_ipa_cmd *cmd;
2333         int tmp;
2334         int rc;
2335
2336         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2337
2338         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2339                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2340                                        sizeof(struct qeth_arp_query_data)
2341                                                 - sizeof(char),
2342                                        prot);
2343         if (!iob)
2344                 return -ENOMEM;
2345         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2346         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2347         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2348         cmd->data.setassparms.data.query_arp.no_entries = 0;
2349         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2350                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2351                            qeth_l3_arp_query_cb, (void *)qinfo);
2352         if (rc) {
2353                 tmp = rc;
2354                 QETH_DBF_MESSAGE(2,
2355                         "Error while querying ARP cache on %s: %s "
2356                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2357                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2358         }
2359
2360         return rc;
2361 }
2362
2363 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2364 {
2365         struct qeth_arp_query_info qinfo = {0, };
2366         int rc;
2367
2368         QETH_CARD_TEXT(card, 3, "arpquery");
2369
2370         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2371                                IPA_ARP_PROCESSING)) {
2372                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2373                 rc = -EOPNOTSUPP;
2374                 goto out;
2375         }
2376         /* get size of userspace buffer and mask_bits -> 6 bytes */
2377         if (copy_from_user(&qinfo, udata, 6)) {
2378                 rc = -EFAULT;
2379                 goto out;
2380         }
2381         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2382         if (!qinfo.udata) {
2383                 rc = -ENOMEM;
2384                 goto out;
2385         }
2386         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2387         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2388         if (rc) {
2389                 if (copy_to_user(udata, qinfo.udata, 4))
2390                         rc = -EFAULT;
2391                         goto free_and_out;
2392         } else {
2393 #ifdef CONFIG_QETH_IPV6
2394                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2395                         /* fails in case of GuestLAN QDIO mode */
2396                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2397                                 &qinfo);
2398                 }
2399 #endif
2400                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2401                         QETH_CARD_TEXT(card, 4, "qactf");
2402                         rc = -EFAULT;
2403                         goto free_and_out;
2404                 }
2405                 QETH_CARD_TEXT(card, 4, "qacts");
2406         }
2407 free_and_out:
2408         kfree(qinfo.udata);
2409 out:
2410         return rc;
2411 }
2412
2413 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2414                                 struct qeth_arp_cache_entry *entry)
2415 {
2416         struct qeth_cmd_buffer *iob;
2417         char buf[16];
2418         int tmp;
2419         int rc;
2420
2421         QETH_CARD_TEXT(card, 3, "arpadent");
2422
2423         /*
2424          * currently GuestLAN only supports the ARP assist function
2425          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2426          * thus we say EOPNOTSUPP for this ARP function
2427          */
2428         if (card->info.guestlan)
2429                 return -EOPNOTSUPP;
2430         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2431                 return -EOPNOTSUPP;
2432         }
2433
2434         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2435                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2436                                        sizeof(struct qeth_arp_cache_entry),
2437                                        QETH_PROT_IPV4);
2438         if (!iob)
2439                 return -ENOMEM;
2440         rc = qeth_send_setassparms(card, iob,
2441                                    sizeof(struct qeth_arp_cache_entry),
2442                                    (unsigned long) entry,
2443                                    qeth_l3_default_setassparms_cb, NULL);
2444         if (rc) {
2445                 tmp = rc;
2446                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2447                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2448                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2449                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2450         }
2451         return rc;
2452 }
2453
2454 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2455                                 struct qeth_arp_cache_entry *entry)
2456 {
2457         struct qeth_cmd_buffer *iob;
2458         char buf[16] = {0, };
2459         int tmp;
2460         int rc;
2461
2462         QETH_CARD_TEXT(card, 3, "arprment");
2463
2464         /*
2465          * currently GuestLAN only supports the ARP assist function
2466          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2467          * thus we say EOPNOTSUPP for this ARP function
2468          */
2469         if (card->info.guestlan)
2470                 return -EOPNOTSUPP;
2471         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2472                 return -EOPNOTSUPP;
2473         }
2474         memcpy(buf, entry, 12);
2475         iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2476                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2477                                        12,
2478                                        QETH_PROT_IPV4);
2479         if (!iob)
2480                 return -ENOMEM;
2481         rc = qeth_send_setassparms(card, iob,
2482                                    12, (unsigned long)buf,
2483                                    qeth_l3_default_setassparms_cb, NULL);
2484         if (rc) {
2485                 tmp = rc;
2486                 memset(buf, 0, 16);
2487                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2488                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2489                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2490                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2491         }
2492         return rc;
2493 }
2494
2495 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2496 {
2497         int rc;
2498         int tmp;
2499
2500         QETH_CARD_TEXT(card, 3, "arpflush");
2501
2502         /*
2503          * currently GuestLAN only supports the ARP assist function
2504          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2505          * thus we say EOPNOTSUPP for this ARP function
2506         */
2507         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2508                 return -EOPNOTSUPP;
2509         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2510                 return -EOPNOTSUPP;
2511         }
2512         rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2513                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2514         if (rc) {
2515                 tmp = rc;
2516                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2517                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2518                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2519         }
2520         return rc;
2521 }
2522
2523 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2524 {
2525         struct qeth_card *card = dev->ml_priv;
2526         struct qeth_arp_cache_entry arp_entry;
2527         struct mii_ioctl_data *mii_data;
2528         int rc = 0;
2529
2530         if (!card)
2531                 return -ENODEV;
2532
2533         if (!qeth_card_hw_is_reachable(card))
2534                 return -ENODEV;
2535
2536         switch (cmd) {
2537         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2538                 if (!capable(CAP_NET_ADMIN)) {
2539                         rc = -EPERM;
2540                         break;
2541                 }
2542                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2543                 break;
2544         case SIOC_QETH_ARP_QUERY_INFO:
2545                 if (!capable(CAP_NET_ADMIN)) {
2546                         rc = -EPERM;
2547                         break;
2548                 }
2549                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2550                 break;
2551         case SIOC_QETH_ARP_ADD_ENTRY:
2552                 if (!capable(CAP_NET_ADMIN)) {
2553                         rc = -EPERM;
2554                         break;
2555                 }
2556                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2557                                    sizeof(struct qeth_arp_cache_entry)))
2558                         rc = -EFAULT;
2559                 else
2560                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2561                 break;
2562         case SIOC_QETH_ARP_REMOVE_ENTRY:
2563                 if (!capable(CAP_NET_ADMIN)) {
2564                         rc = -EPERM;
2565                         break;
2566                 }
2567                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2568                                    sizeof(struct qeth_arp_cache_entry)))
2569                         rc = -EFAULT;
2570                 else
2571                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2572                 break;
2573         case SIOC_QETH_ARP_FLUSH_CACHE:
2574                 if (!capable(CAP_NET_ADMIN)) {
2575                         rc = -EPERM;
2576                         break;
2577                 }
2578                 rc = qeth_l3_arp_flush_cache(card);
2579                 break;
2580         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2581                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2582                 break;
2583         case SIOC_QETH_GET_CARD_TYPE:
2584                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2585                      card->info.type == QETH_CARD_TYPE_OSX) &&
2586                     !card->info.guestlan)
2587                         return 1;
2588                 return 0;
2589                 break;
2590         case SIOCGMIIPHY:
2591                 mii_data = if_mii(rq);
2592                 mii_data->phy_id = 0;
2593                 break;
2594         case SIOCGMIIREG:
2595                 mii_data = if_mii(rq);
2596                 if (mii_data->phy_id != 0)
2597                         rc = -EINVAL;
2598                 else
2599                         mii_data->val_out = qeth_mdio_read(dev,
2600                                                         mii_data->phy_id,
2601                                                         mii_data->reg_num);
2602                 break;
2603         case SIOC_QETH_QUERY_OAT:
2604                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2605                 break;
2606         default:
2607                 rc = -EOPNOTSUPP;
2608         }
2609         if (rc)
2610                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2611         return rc;
2612 }
2613
2614 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2615 {
2616         int cast_type = RTN_UNSPEC;
2617         struct neighbour *n = NULL;
2618         struct dst_entry *dst;
2619
2620         rcu_read_lock();
2621         dst = skb_dst(skb);
2622         if (dst)
2623                 n = dst_neigh_lookup_skb(dst, skb);
2624         if (n) {
2625                 cast_type = n->type;
2626                 rcu_read_unlock();
2627                 neigh_release(n);
2628                 if ((cast_type == RTN_BROADCAST) ||
2629                     (cast_type == RTN_MULTICAST) ||
2630                     (cast_type == RTN_ANYCAST))
2631                         return cast_type;
2632                 else
2633                         return RTN_UNSPEC;
2634         }
2635         rcu_read_unlock();
2636
2637         /* try something else */
2638         if (skb->protocol == ETH_P_IPV6)
2639                 return (skb_network_header(skb)[24] == 0xff) ?
2640                                 RTN_MULTICAST : 0;
2641         else if (skb->protocol == ETH_P_IP)
2642                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2643                                 RTN_MULTICAST : 0;
2644         /* ... */
2645         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2646                 return RTN_BROADCAST;
2647         else {
2648                 u16 hdr_mac;
2649
2650                 hdr_mac = *((u16 *)skb->data);
2651                 /* tr multicast? */
2652                 switch (card->info.link_type) {
2653                 case QETH_LINK_TYPE_HSTR:
2654                 case QETH_LINK_TYPE_LANE_TR:
2655                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2656                             (hdr_mac == QETH_TR_MAC_C))
2657                                 return RTN_MULTICAST;
2658                         break;
2659                 /* eth or so multicast? */
2660                 default:
2661                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2662                             (hdr_mac == QETH_ETH_MAC_V6))
2663                                 return RTN_MULTICAST;
2664                 }
2665         }
2666         return cast_type;
2667 }
2668
2669 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2670                 struct qeth_hdr *hdr, struct sk_buff *skb)
2671 {
2672         char daddr[16];
2673         struct af_iucv_trans_hdr *iucv_hdr;
2674
2675         skb_pull(skb, 14);
2676         card->dev->header_ops->create(skb, card->dev, 0,
2677                                       card->dev->dev_addr, card->dev->dev_addr,
2678                                       card->dev->addr_len);
2679         skb_pull(skb, 14);
2680         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2681         memset(hdr, 0, sizeof(struct qeth_hdr));
2682         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2683         hdr->hdr.l3.ext_flags = 0;
2684         hdr->hdr.l3.length = skb->len;
2685         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2686         memset(daddr, 0, sizeof(daddr));
2687         daddr[0] = 0xfe;
2688         daddr[1] = 0x80;
2689         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2690         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2691 }
2692
2693 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2694                 struct sk_buff *skb, int ipv, int cast_type)
2695 {
2696         struct dst_entry *dst;
2697
2698         memset(hdr, 0, sizeof(struct qeth_hdr));
2699         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2700         hdr->hdr.l3.ext_flags = 0;
2701
2702         /*
2703          * before we're going to overwrite this location with next hop ip.
2704          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2705          */
2706         if (skb_vlan_tag_present(skb)) {
2707                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2708                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2709                 else
2710                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2711                 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb);
2712         }
2713
2714         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2715
2716         rcu_read_lock();
2717         dst = skb_dst(skb);
2718         if (ipv == 4) {
2719                 struct rtable *rt = (struct rtable *) dst;
2720                 __be32 *pkey = &ip_hdr(skb)->daddr;
2721
2722                 if (rt->rt_gateway)
2723                         pkey = &rt->rt_gateway;
2724
2725                 /* IPv4 */
2726                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2727                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2728                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2729         } else if (ipv == 6) {
2730                 struct rt6_info *rt = (struct rt6_info *) dst;
2731                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2732
2733                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2734                         pkey = &rt->rt6i_gateway;
2735
2736                 /* IPv6 */
2737                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2738                 if (card->info.type == QETH_CARD_TYPE_IQD)
2739                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2740                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2741         } else {
2742                 if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2743                             skb->dev->broadcast, 6)) {
2744                         /* broadcast? */
2745                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2746                                                 QETH_HDR_PASSTHRU;
2747                 } else {
2748                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2749                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2750                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2751                 }
2752         }
2753         rcu_read_unlock();
2754 }
2755
2756 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2757                 struct qeth_hdr *hdr, struct sk_buff *skb)
2758 {
2759         struct iphdr *iph = ip_hdr(skb);
2760
2761         /* tcph->check contains already the pseudo hdr checksum
2762          * so just set the header flags
2763          */
2764         if (iph->protocol == IPPROTO_UDP)
2765                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2766         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2767                 QETH_HDR_EXT_CSUM_HDR_REQ;
2768         iph->check = 0;
2769         if (card->options.performance_stats)
2770                 card->perf_stats.tx_csum++;
2771 }
2772
2773 static void qeth_tso_fill_header(struct qeth_card *card,
2774                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2775 {
2776         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2777         struct tcphdr *tcph = tcp_hdr(skb);
2778         struct iphdr *iph = ip_hdr(skb);
2779         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2780
2781         /*fix header to TSO values ...*/
2782         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2783         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2784         /*set values which are fix for the first approach ...*/
2785         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2786         hdr->ext.imb_hdr_no  = 1;
2787         hdr->ext.hdr_type    = 1;
2788         hdr->ext.hdr_version = 1;
2789         hdr->ext.hdr_len     = 28;
2790         /*insert non-fix values */
2791         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2792         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2793         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2794                                        sizeof(struct qeth_hdr_tso));
2795         tcph->check = 0;
2796         if (skb->protocol == ETH_P_IPV6) {
2797                 ip6h->payload_len = 0;
2798                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2799                                                0, IPPROTO_TCP, 0);
2800         } else {
2801                 /*OSA want us to set these values ...*/
2802                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2803                                          0, IPPROTO_TCP, 0);
2804                 iph->tot_len = 0;
2805                 iph->check = 0;
2806         }
2807 }
2808
2809 /**
2810  * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso
2811  * @card:                          qeth card structure, to check max. elems.
2812  * @skb:                           SKB address
2813  * @extra_elems:                   extra elems needed, to check against max.
2814  *
2815  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
2816  * skb data, including linear part and fragments, but excluding TCP header.
2817  * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().)
2818  * Checks if the result plus extra_elems fits under the limit for the card.
2819  * Returns 0 if it does not.
2820  * Note: extra_elems is not included in the returned result.
2821  */
2822 static int qeth_l3_get_elements_no_tso(struct qeth_card *card,
2823                         struct sk_buff *skb, int extra_elems)
2824 {
2825         addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb);
2826         int elements = qeth_get_elements_for_range(
2827                                 tcpdptr,
2828                                 (addr_t)skb->data + skb_headlen(skb)) +
2829                 qeth_get_elements_for_frags(skb);
2830
2831         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
2832                 QETH_DBF_MESSAGE(2,
2833         "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n",
2834                                 elements + extra_elems, skb->len);
2835                 return 0;
2836         }
2837         return elements;
2838 }
2839
2840 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2841 {
2842         int rc;
2843         u16 *tag;
2844         struct qeth_hdr *hdr = NULL;
2845         int hdr_elements = 0;
2846         int elements;
2847         struct qeth_card *card = dev->ml_priv;
2848         struct sk_buff *new_skb = NULL;
2849         int ipv = qeth_get_ip_version(skb);
2850         int cast_type = qeth_l3_get_cast_type(card, skb);
2851         struct qeth_qdio_out_q *queue =
2852                 card->qdio.out_qs[card->qdio.do_prio_queueing
2853                         || (cast_type && card->info.is_multicast_different) ?
2854                         qeth_get_priority_queue(card, skb, ipv, cast_type) :
2855                         card->qdio.default_out_queue];
2856         int tx_bytes = skb->len;
2857         bool use_tso;
2858         int data_offset = -1;
2859         int nr_frags;
2860
2861         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2862              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2863               ((card->options.cq == QETH_CQ_ENABLED) &&
2864                (skb->protocol != ETH_P_AF_IUCV)))) ||
2865             card->options.sniffer)
2866                         goto tx_drop;
2867
2868         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2869                 card->stats.tx_carrier_errors++;
2870                 goto tx_drop;
2871         }
2872
2873         if ((cast_type == RTN_BROADCAST) &&
2874             (card->info.broadcast_capable == 0))
2875                 goto tx_drop;
2876
2877         if (card->options.performance_stats) {
2878                 card->perf_stats.outbound_cnt++;
2879                 card->perf_stats.outbound_start_time = qeth_get_micros();
2880         }
2881
2882         /* Ignore segment size from skb_is_gso(), 1 page is always used. */
2883         use_tso = skb_is_gso(skb) &&
2884                   (qeth_get_ip_protocol(skb) == IPPROTO_TCP) && (ipv == 4);
2885
2886         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2887             !skb_is_nonlinear(skb)) {
2888                 new_skb = skb;
2889                 if (new_skb->protocol == ETH_P_AF_IUCV)
2890                         data_offset = 0;
2891                 else
2892                         data_offset = ETH_HLEN;
2893                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2894                 if (!hdr)
2895                         goto tx_drop;
2896                 hdr_elements++;
2897         } else {
2898                 /* create a clone with writeable headroom */
2899                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2900                                         + VLAN_HLEN);
2901                 if (!new_skb)
2902                         goto tx_drop;
2903         }
2904
2905         if (card->info.type == QETH_CARD_TYPE_IQD) {
2906                 if (data_offset < 0)
2907                         skb_pull(new_skb, ETH_HLEN);
2908         } else {
2909                 if (ipv == 4) {
2910                         skb_pull(new_skb, ETH_HLEN);
2911                 }
2912
2913                 if (ipv != 4 && skb_vlan_tag_present(new_skb)) {
2914                         skb_push(new_skb, VLAN_HLEN);
2915                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2916                         skb_copy_to_linear_data_offset(new_skb, 4,
2917                                 new_skb->data + 8, 4);
2918                         skb_copy_to_linear_data_offset(new_skb, 8,
2919                                 new_skb->data + 12, 4);
2920                         tag = (u16 *)(new_skb->data + 12);
2921                         *tag = __constant_htons(ETH_P_8021Q);
2922                         *(tag + 1) = htons(skb_vlan_tag_get(new_skb));
2923                 }
2924         }
2925
2926         netif_stop_queue(dev);
2927
2928         /* fix hardware limitation: as long as we do not have sbal
2929          * chaining we can not send long frag lists
2930          */
2931         if ((card->info.type != QETH_CARD_TYPE_IQD) &&
2932             ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) ||
2933              (!use_tso && !qeth_get_elements_no(card, new_skb, 0)))) {
2934                 int lin_rc = skb_linearize(new_skb);
2935
2936                 if (card->options.performance_stats) {
2937                         if (lin_rc)
2938                                 card->perf_stats.tx_linfail++;
2939                         else
2940                                 card->perf_stats.tx_lin++;
2941                 }
2942                 if (lin_rc)
2943                         goto tx_drop;
2944         }
2945
2946         if (use_tso) {
2947                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2948                                                 sizeof(struct qeth_hdr_tso));
2949                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2950                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2951                 qeth_tso_fill_header(card, hdr, new_skb);
2952                 hdr_elements++;
2953         } else {
2954                 if (data_offset < 0) {
2955                         hdr = (struct qeth_hdr *)skb_push(new_skb,
2956                                                 sizeof(struct qeth_hdr));
2957                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
2958                                                 cast_type);
2959                 } else {
2960                         if (new_skb->protocol == ETH_P_AF_IUCV)
2961                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
2962                         else {
2963                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
2964                                                         cast_type);
2965                                 hdr->hdr.l3.length = new_skb->len - data_offset;
2966                         }
2967                 }
2968
2969                 if (skb->ip_summed == CHECKSUM_PARTIAL)
2970                         qeth_l3_hdr_csum(card, hdr, new_skb);
2971         }
2972
2973         elements = use_tso ?
2974                    qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) :
2975                    qeth_get_elements_no(card, new_skb, hdr_elements);
2976         if (!elements) {
2977                 if (data_offset >= 0)
2978                         kmem_cache_free(qeth_core_header_cache, hdr);
2979                 goto tx_drop;
2980         }
2981         elements += hdr_elements;
2982
2983         if (card->info.type != QETH_CARD_TYPE_IQD) {
2984                 int len;
2985                 if (use_tso)
2986                         len = ((unsigned long)tcp_hdr(new_skb) +
2987                                 tcp_hdrlen(new_skb)) -
2988                                 (unsigned long)new_skb->data;
2989                 else
2990                         len = sizeof(struct qeth_hdr_layer3);
2991
2992                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len))
2993                         goto tx_drop;
2994                 rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements);
2995         } else
2996                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
2997                                         elements, data_offset, 0);
2998
2999         if (!rc) {
3000                 card->stats.tx_packets++;
3001                 card->stats.tx_bytes += tx_bytes;
3002                 if (new_skb != skb)
3003                         dev_kfree_skb_any(skb);
3004                 if (card->options.performance_stats) {
3005                         nr_frags = skb_shinfo(new_skb)->nr_frags;
3006                         if (use_tso) {
3007                                 card->perf_stats.large_send_bytes += tx_bytes;
3008                                 card->perf_stats.large_send_cnt++;
3009                         }
3010                         if (nr_frags) {
3011                                 card->perf_stats.sg_skbs_sent++;
3012                                 /* nr_frags + skb->data */
3013                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3014                         }
3015                 }
3016                 rc = NETDEV_TX_OK;
3017         } else {
3018                 if (data_offset >= 0)
3019                         kmem_cache_free(qeth_core_header_cache, hdr);
3020
3021                 if (rc == -EBUSY) {
3022                         if (new_skb != skb)
3023                                 dev_kfree_skb_any(new_skb);
3024                         return NETDEV_TX_BUSY;
3025                 } else
3026                         goto tx_drop;
3027         }
3028
3029         netif_wake_queue(dev);
3030         if (card->options.performance_stats)
3031                 card->perf_stats.outbound_time += qeth_get_micros() -
3032                         card->perf_stats.outbound_start_time;
3033         return rc;
3034
3035 tx_drop:
3036         card->stats.tx_dropped++;
3037         card->stats.tx_errors++;
3038         if ((new_skb != skb) && new_skb)
3039                 dev_kfree_skb_any(new_skb);
3040         dev_kfree_skb_any(skb);
3041         netif_wake_queue(dev);
3042         return NETDEV_TX_OK;
3043 }
3044
3045 static int __qeth_l3_open(struct net_device *dev)
3046 {
3047         struct qeth_card *card = dev->ml_priv;
3048         int rc = 0;
3049
3050         QETH_CARD_TEXT(card, 4, "qethopen");
3051         if (card->state == CARD_STATE_UP)
3052                 return rc;
3053         if (card->state != CARD_STATE_SOFTSETUP)
3054                 return -ENODEV;
3055         card->data.state = CH_STATE_UP;
3056         card->state = CARD_STATE_UP;
3057         netif_start_queue(dev);
3058
3059         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3060                 napi_enable(&card->napi);
3061                 napi_schedule(&card->napi);
3062         } else
3063                 rc = -EIO;
3064         return rc;
3065 }
3066
3067 static int qeth_l3_open(struct net_device *dev)
3068 {
3069         struct qeth_card *card = dev->ml_priv;
3070
3071         QETH_CARD_TEXT(card, 5, "qethope_");
3072         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3073                 QETH_CARD_TEXT(card, 3, "openREC");
3074                 return -ERESTARTSYS;
3075         }
3076         return __qeth_l3_open(dev);
3077 }
3078
3079 static int qeth_l3_stop(struct net_device *dev)
3080 {
3081         struct qeth_card *card = dev->ml_priv;
3082
3083         QETH_CARD_TEXT(card, 4, "qethstop");
3084         netif_tx_disable(dev);
3085         if (card->state == CARD_STATE_UP) {
3086                 card->state = CARD_STATE_SOFTSETUP;
3087                 napi_disable(&card->napi);
3088         }
3089         return 0;
3090 }
3091
3092 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3093         netdev_features_t features)
3094 {
3095         struct qeth_card *card = dev->ml_priv;
3096
3097         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3098                 features &= ~NETIF_F_IP_CSUM;
3099         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3100                 features &= ~NETIF_F_TSO;
3101         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3102                 features &= ~NETIF_F_RXCSUM;
3103         return features;
3104 }
3105
3106 static int qeth_l3_set_features(struct net_device *dev,
3107         netdev_features_t features)
3108 {
3109         struct qeth_card *card = dev->ml_priv;
3110         netdev_features_t changed = dev->features ^ features;
3111
3112         if (!(changed & NETIF_F_RXCSUM))
3113                 return 0;
3114
3115         if (card->state == CARD_STATE_DOWN ||
3116             card->state == CARD_STATE_RECOVER)
3117                 return 0;
3118
3119         return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0);
3120 }
3121
3122 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3123         .get_link = ethtool_op_get_link,
3124         .get_strings = qeth_core_get_strings,
3125         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3126         .get_sset_count = qeth_core_get_sset_count,
3127         .get_drvinfo = qeth_core_get_drvinfo,
3128         .get_settings = qeth_core_ethtool_get_settings,
3129 };
3130
3131 /*
3132  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3133  * NOARP on the netdevice is no option because it also turns off neighbor
3134  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3135  * arp resolution but we want the hard header (packet socket will work
3136  * e.g. tcpdump)
3137  */
3138 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3139 {
3140         n->nud_state = NUD_NOARP;
3141         memcpy(n->ha, "FAKELL", 6);
3142         n->output = n->ops->connected_output;
3143         return 0;
3144 }
3145
3146 static int
3147 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3148 {
3149         if (np->tbl->family == AF_INET)
3150                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3151
3152         return 0;
3153 }
3154
3155 static const struct net_device_ops qeth_l3_netdev_ops = {
3156         .ndo_open               = qeth_l3_open,
3157         .ndo_stop               = qeth_l3_stop,
3158         .ndo_get_stats          = qeth_get_stats,
3159         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3160         .ndo_validate_addr      = eth_validate_addr,
3161         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3162         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3163         .ndo_change_mtu         = qeth_change_mtu,
3164         .ndo_fix_features       = qeth_l3_fix_features,
3165         .ndo_set_features       = qeth_l3_set_features,
3166         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3167         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3168         .ndo_tx_timeout         = qeth_tx_timeout,
3169 };
3170
3171 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3172         .ndo_open               = qeth_l3_open,
3173         .ndo_stop               = qeth_l3_stop,
3174         .ndo_get_stats          = qeth_get_stats,
3175         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3176         .ndo_validate_addr      = eth_validate_addr,
3177         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3178         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3179         .ndo_change_mtu         = qeth_change_mtu,
3180         .ndo_fix_features       = qeth_l3_fix_features,
3181         .ndo_set_features       = qeth_l3_set_features,
3182         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3183         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3184         .ndo_tx_timeout         = qeth_tx_timeout,
3185         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3186 };
3187
3188 static int qeth_l3_setup_netdev(struct qeth_card *card)
3189 {
3190         int rc;
3191
3192         if (card->info.type == QETH_CARD_TYPE_OSD ||
3193             card->info.type == QETH_CARD_TYPE_OSX) {
3194                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3195                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3196                         pr_info("qeth_l3: ignoring TR device\n");
3197                         return -ENODEV;
3198                 } else {
3199                         card->dev = alloc_etherdev(0);
3200                         if (!card->dev)
3201                                 return -ENODEV;
3202                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3203
3204                         /*IPv6 address autoconfiguration stuff*/
3205                         qeth_l3_get_unique_id(card);
3206                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3207                                 card->dev->dev_id = card->info.unique_id &
3208                                                          0xffff;
3209                         if (!card->info.guestlan) {
3210                                 card->dev->hw_features = NETIF_F_SG |
3211                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3212                                         NETIF_F_TSO;
3213                                 card->dev->features = NETIF_F_RXCSUM |
3214                                                       NETIF_F_SG;
3215                         }
3216                 }
3217         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3218                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
3219                                          ether_setup);
3220                 if (!card->dev)
3221                         return -ENODEV;
3222                 card->dev->flags |= IFF_NOARP;
3223                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3224                 rc = qeth_l3_iqd_read_initial_mac(card);
3225                 if (rc)
3226                         return rc;
3227                 if (card->options.hsuid[0])
3228                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3229         } else
3230                 return -ENODEV;
3231
3232         card->dev->ml_priv = card;
3233         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3234         card->dev->mtu = card->info.initial_mtu;
3235         card->dev->ethtool_ops = &qeth_l3_ethtool_ops;
3236         card->dev->features |=  NETIF_F_HW_VLAN_CTAG_TX |
3237                                 NETIF_F_HW_VLAN_CTAG_RX |
3238                                 NETIF_F_HW_VLAN_CTAG_FILTER;
3239         netif_keep_dst(card->dev);
3240         card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
3241                                   PAGE_SIZE;
3242         card->dev->gso_max_segs = (QETH_MAX_BUFFER_ELEMENTS(card) - 1);
3243
3244         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3245         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3246         netif_carrier_off(card->dev);
3247         return register_netdev(card->dev);
3248 }
3249
3250 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3251 {
3252         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3253
3254         qeth_l3_create_device_attributes(&gdev->dev);
3255         card->options.layer2 = 0;
3256         card->info.hwtrap = 0;
3257         return 0;
3258 }
3259
3260 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3261 {
3262         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3263
3264         qeth_l3_remove_device_attributes(&cgdev->dev);
3265
3266         qeth_set_allowed_threads(card, 0, 1);
3267         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3268
3269         if (cgdev->state == CCWGROUP_ONLINE)
3270                 qeth_l3_set_offline(cgdev);
3271
3272         if (card->dev) {
3273                 unregister_netdev(card->dev);
3274                 card->dev = NULL;
3275         }
3276
3277         qeth_l3_clear_ip_htable(card, 0);
3278         qeth_l3_clear_ipato_list(card);
3279         return;
3280 }
3281
3282 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3283 {
3284         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3285         int rc = 0;
3286         enum qeth_card_states recover_flag;
3287
3288         mutex_lock(&card->discipline_mutex);
3289         mutex_lock(&card->conf_mutex);
3290         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3291         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3292
3293         recover_flag = card->state;
3294         rc = qeth_core_hardsetup_card(card);
3295         if (rc) {
3296                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3297                 rc = -ENODEV;
3298                 goto out_remove;
3299         }
3300
3301         if (!card->dev && qeth_l3_setup_netdev(card)) {
3302                 rc = -ENODEV;
3303                 goto out_remove;
3304         }
3305
3306         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3307                 if (card->info.hwtrap &&
3308                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3309                         card->info.hwtrap = 0;
3310         } else
3311                 card->info.hwtrap = 0;
3312
3313         card->state = CARD_STATE_HARDSETUP;
3314         memset(&card->rx, 0, sizeof(struct qeth_rx));
3315         qeth_print_status_message(card);
3316
3317         /* softsetup */
3318         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3319
3320         rc = qeth_send_startlan(card);
3321         if (rc) {
3322                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3323                 if (rc == 0xe080) {
3324                         dev_warn(&card->gdev->dev,
3325                                 "The LAN is offline\n");
3326                         card->lan_online = 0;
3327                         goto contin;
3328                 }
3329                 rc = -ENODEV;
3330                 goto out_remove;
3331         } else
3332                 card->lan_online = 1;
3333
3334 contin:
3335         rc = qeth_l3_setadapter_parms(card);
3336         if (rc)
3337                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
3338         if (!card->options.sniffer) {
3339                 rc = qeth_l3_start_ipassists(card);
3340                 if (rc) {
3341                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3342                         goto out_remove;
3343                 }
3344                 rc = qeth_l3_setrouting_v4(card);
3345                 if (rc)
3346                         QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc);
3347                 rc = qeth_l3_setrouting_v6(card);
3348                 if (rc)
3349                         QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc);
3350         }
3351         netif_tx_disable(card->dev);
3352
3353         rc = qeth_init_qdio_queues(card);
3354         if (rc) {
3355                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3356                 rc = -ENODEV;
3357                 goto out_remove;
3358         }
3359         card->state = CARD_STATE_SOFTSETUP;
3360
3361         qeth_set_allowed_threads(card, 0xffffffff, 0);
3362         qeth_l3_recover_ip(card);
3363         if (card->lan_online)
3364                 netif_carrier_on(card->dev);
3365         else
3366                 netif_carrier_off(card->dev);
3367         if (recover_flag == CARD_STATE_RECOVER) {
3368                 rtnl_lock();
3369                 if (recovery_mode)
3370                         __qeth_l3_open(card->dev);
3371                 else
3372                         dev_open(card->dev);
3373                 qeth_l3_set_multicast_list(card->dev);
3374                 rtnl_unlock();
3375         }
3376         qeth_trace_features(card);
3377         /* let user_space know that device is online */
3378         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3379         mutex_unlock(&card->conf_mutex);
3380         mutex_unlock(&card->discipline_mutex);
3381         return 0;
3382 out_remove:
3383         qeth_l3_stop_card(card, 0);
3384         ccw_device_set_offline(CARD_DDEV(card));
3385         ccw_device_set_offline(CARD_WDEV(card));
3386         ccw_device_set_offline(CARD_RDEV(card));
3387         qdio_free(CARD_DDEV(card));
3388         if (recover_flag == CARD_STATE_RECOVER)
3389                 card->state = CARD_STATE_RECOVER;
3390         else
3391                 card->state = CARD_STATE_DOWN;
3392         mutex_unlock(&card->conf_mutex);
3393         mutex_unlock(&card->discipline_mutex);
3394         return rc;
3395 }
3396
3397 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3398 {
3399         return __qeth_l3_set_online(gdev, 0);
3400 }
3401
3402 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3403                         int recovery_mode)
3404 {
3405         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3406         int rc = 0, rc2 = 0, rc3 = 0;
3407         enum qeth_card_states recover_flag;
3408
3409         mutex_lock(&card->discipline_mutex);
3410         mutex_lock(&card->conf_mutex);
3411         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3412         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3413
3414         if (card->dev && netif_carrier_ok(card->dev))
3415                 netif_carrier_off(card->dev);
3416         recover_flag = card->state;
3417         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3418                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3419                 card->info.hwtrap = 1;
3420         }
3421         qeth_l3_stop_card(card, recovery_mode);
3422         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3423                 rtnl_lock();
3424                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3425                 rtnl_unlock();
3426         }
3427         rc  = ccw_device_set_offline(CARD_DDEV(card));
3428         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3429         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3430         if (!rc)
3431                 rc = (rc2) ? rc2 : rc3;
3432         if (rc)
3433                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3434         qdio_free(CARD_DDEV(card));
3435         if (recover_flag == CARD_STATE_UP)
3436                 card->state = CARD_STATE_RECOVER;
3437         /* let user_space know that device is offline */
3438         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3439         mutex_unlock(&card->conf_mutex);
3440         mutex_unlock(&card->discipline_mutex);
3441         return 0;
3442 }
3443
3444 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3445 {
3446         return __qeth_l3_set_offline(cgdev, 0);
3447 }
3448
3449 static int qeth_l3_recover(void *ptr)
3450 {
3451         struct qeth_card *card;
3452         int rc = 0;
3453
3454         card = (struct qeth_card *) ptr;
3455         QETH_CARD_TEXT(card, 2, "recover1");
3456         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3457         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3458                 return 0;
3459         QETH_CARD_TEXT(card, 2, "recover2");
3460         dev_warn(&card->gdev->dev,
3461                 "A recovery process has been started for the device\n");
3462         qeth_set_recovery_task(card);
3463         __qeth_l3_set_offline(card->gdev, 1);
3464         rc = __qeth_l3_set_online(card->gdev, 1);
3465         if (!rc)
3466                 dev_info(&card->gdev->dev,
3467                         "Device successfully recovered!\n");
3468         else {
3469                 qeth_close_dev(card);
3470                 dev_warn(&card->gdev->dev, "The qeth device driver "
3471                                 "failed to recover an error on the device\n");
3472         }
3473         qeth_clear_recovery_task(card);
3474         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3475         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3476         return 0;
3477 }
3478
3479 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3480 {
3481         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3482         qeth_set_allowed_threads(card, 0, 1);
3483         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3484                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3485         qeth_qdio_clear_card(card, 0);
3486         qeth_clear_qdio_buffers(card);
3487         qdio_free(CARD_DDEV(card));
3488 }
3489
3490 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3491 {
3492         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3493
3494         if (card->dev)
3495                 netif_device_detach(card->dev);
3496         qeth_set_allowed_threads(card, 0, 1);
3497         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3498         if (gdev->state == CCWGROUP_OFFLINE)
3499                 return 0;
3500         if (card->state == CARD_STATE_UP) {
3501                 if (card->info.hwtrap)
3502                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3503                 __qeth_l3_set_offline(card->gdev, 1);
3504         } else
3505                 __qeth_l3_set_offline(card->gdev, 0);
3506         return 0;
3507 }
3508
3509 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3510 {
3511         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3512         int rc = 0;
3513
3514         if (gdev->state == CCWGROUP_OFFLINE)
3515                 goto out;
3516
3517         if (card->state == CARD_STATE_RECOVER) {
3518                 rc = __qeth_l3_set_online(card->gdev, 1);
3519                 if (rc) {
3520                         rtnl_lock();
3521                         dev_close(card->dev);
3522                         rtnl_unlock();
3523                 }
3524         } else
3525                 rc = __qeth_l3_set_online(card->gdev, 0);
3526 out:
3527         qeth_set_allowed_threads(card, 0xffffffff, 0);
3528         if (card->dev)
3529                 netif_device_attach(card->dev);
3530         if (rc)
3531                 dev_warn(&card->gdev->dev, "The qeth device driver "
3532                         "failed to recover an error on the device\n");
3533         return rc;
3534 }
3535
3536 /* Returns zero if the command is successfully "consumed" */
3537 static int qeth_l3_control_event(struct qeth_card *card,
3538                                         struct qeth_ipa_cmd *cmd)
3539 {
3540         return 1;
3541 }
3542
3543 struct qeth_discipline qeth_l3_discipline = {
3544         .start_poll = qeth_qdio_start_poll,
3545         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
3546         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
3547         .recover = qeth_l3_recover,
3548         .setup = qeth_l3_probe_device,
3549         .remove = qeth_l3_remove_device,
3550         .set_online = qeth_l3_set_online,
3551         .set_offline = qeth_l3_set_offline,
3552         .shutdown = qeth_l3_shutdown,
3553         .freeze = qeth_l3_pm_suspend,
3554         .thaw = qeth_l3_pm_resume,
3555         .restore = qeth_l3_pm_resume,
3556         .control_event_handler = qeth_l3_control_event,
3557 };
3558 EXPORT_SYMBOL_GPL(qeth_l3_discipline);
3559
3560 static int qeth_l3_ip_event(struct notifier_block *this,
3561                             unsigned long event, void *ptr)
3562 {
3563
3564         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3565         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3566         struct qeth_ipaddr *addr;
3567         struct qeth_card *card;
3568
3569         if (dev_net(dev) != &init_net)
3570                 return NOTIFY_DONE;
3571
3572         card = qeth_l3_get_card_from_dev(dev);
3573         if (!card)
3574                 return NOTIFY_DONE;
3575         QETH_CARD_TEXT(card, 3, "ipevent");
3576
3577         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3578         if (addr) {
3579                 addr->u.a4.addr = ifa->ifa_address;
3580                 addr->u.a4.mask = ifa->ifa_mask;
3581                 addr->type = QETH_IP_TYPE_NORMAL;
3582         } else
3583                 return NOTIFY_DONE;
3584
3585         switch (event) {
3586         case NETDEV_UP:
3587                 spin_lock_bh(&card->ip_lock);
3588                 qeth_l3_add_ip(card, addr);
3589                 spin_unlock_bh(&card->ip_lock);
3590                 break;
3591         case NETDEV_DOWN:
3592                 spin_lock_bh(&card->ip_lock);
3593                 qeth_l3_delete_ip(card, addr);
3594                 spin_unlock_bh(&card->ip_lock);
3595                 break;
3596         }
3597
3598         kfree(addr);
3599         return NOTIFY_DONE;
3600 }
3601
3602 static struct notifier_block qeth_l3_ip_notifier = {
3603         qeth_l3_ip_event,
3604         NULL,
3605 };
3606
3607 #ifdef CONFIG_QETH_IPV6
3608 /**
3609  * IPv6 event handler
3610  */
3611 static int qeth_l3_ip6_event(struct notifier_block *this,
3612                              unsigned long event, void *ptr)
3613 {
3614         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3615         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3616         struct qeth_ipaddr *addr;
3617         struct qeth_card *card;
3618
3619         card = qeth_l3_get_card_from_dev(dev);
3620         if (!card)
3621                 return NOTIFY_DONE;
3622         QETH_CARD_TEXT(card, 3, "ip6event");
3623         if (!qeth_is_supported(card, IPA_IPV6))
3624                 return NOTIFY_DONE;
3625
3626         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3627         if (addr) {
3628                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3629                 addr->u.a6.pfxlen = ifa->prefix_len;
3630                 addr->type = QETH_IP_TYPE_NORMAL;
3631         } else
3632                 return NOTIFY_DONE;
3633
3634         switch (event) {
3635         case NETDEV_UP:
3636                 spin_lock_bh(&card->ip_lock);
3637                 qeth_l3_add_ip(card, addr);
3638                 spin_unlock_bh(&card->ip_lock);
3639                 break;
3640         case NETDEV_DOWN:
3641                 spin_lock_bh(&card->ip_lock);
3642                 qeth_l3_delete_ip(card, addr);
3643                 spin_unlock_bh(&card->ip_lock);
3644                 break;
3645         }
3646
3647         kfree(addr);
3648         return NOTIFY_DONE;
3649 }
3650
3651 static struct notifier_block qeth_l3_ip6_notifier = {
3652         qeth_l3_ip6_event,
3653         NULL,
3654 };
3655 #endif
3656
3657 static int qeth_l3_register_notifiers(void)
3658 {
3659         int rc;
3660
3661         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3662         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3663         if (rc)
3664                 return rc;
3665 #ifdef CONFIG_QETH_IPV6
3666         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3667         if (rc) {
3668                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3669                 return rc;
3670         }
3671 #else
3672         pr_warn("There is no IPv6 support for the layer 3 discipline\n");
3673 #endif
3674         return 0;
3675 }
3676
3677 static void qeth_l3_unregister_notifiers(void)
3678 {
3679
3680         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3681         WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3682 #ifdef CONFIG_QETH_IPV6
3683         WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3684 #endif /* QETH_IPV6 */
3685 }
3686
3687 static int __init qeth_l3_init(void)
3688 {
3689         int rc = 0;
3690
3691         pr_info("register layer 3 discipline\n");
3692         rc = qeth_l3_register_notifiers();
3693         return rc;
3694 }
3695
3696 static void __exit qeth_l3_exit(void)
3697 {
3698         qeth_l3_unregister_notifiers();
3699         pr_info("unregister layer 3 discipline\n");
3700 }
3701
3702 module_init(qeth_l3_init);
3703 module_exit(qeth_l3_exit);
3704 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3705 MODULE_DESCRIPTION("qeth layer 3 discipline");
3706 MODULE_LICENSE("GPL");