drivers/s390/net/qeth_l3_main.c

   1 /*
   2  *  drivers/s390/net/qeth_l3_main.c
   3  *
   4  *    Copyright IBM Corp. 2007, 2009
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  11 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/bitops.h>
  17 #include <linux/string.h>
  18 #include <linux/errno.h>
  19 #include <linux/kernel.h>
  20 #include <linux/etherdevice.h>
  21 #include <linux/mii.h>
  22 #include <linux/ip.h>
  23 #include <linux/ipv6.h>
  24 #include <linux/inetdevice.h>
  25 #include <linux/igmp.h>
  26 #include <linux/slab.h>
  27 #include <linux/if_vlan.h>
  28
  29 #include <net/ip.h>
  30 #include <net/arp.h>
  31 #include <net/route.h>
  32 #include <net/ip6_fib.h>
  33 #include <net/ip6_checksum.h>
  34 #include <net/iucv/af_iucv.h>
  35
  36 #include "qeth_l3.h"
  37
  38
  39 static int qeth_l3_set_offline(struct ccwgroup_device *);
  40 static int qeth_l3_recover(void *);
  41 static int qeth_l3_stop(struct net_device *);
  42 static void qeth_l3_set_multicast_list(struct net_device *);
  43 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  44 static int qeth_l3_register_addr_entry(struct qeth_card *,
  45                 struct qeth_ipaddr *);
  46 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  47                 struct qeth_ipaddr *);
  48 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  49 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  50
  51 static int qeth_l3_isxdigit(char *buf)
  52 {
  53         while (*buf) {
  54                 if (!isxdigit(*buf++))
  55                         return 0;
  56         }
  57         return 1;
  58 }
  59
  60 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  61 {
  62         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
  63 }
  64
  65 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  66 {
  67         int count = 0, rc = 0;
  68         int in[4];
  69         char c;
  70
  71         rc = sscanf(buf, "%u.%u.%u.%u%c",
  72                     &in[0], &in[1], &in[2], &in[3], &c);
  73         if (rc != 4 && (rc != 5 || c != '\n'))
  74                 return -EINVAL;
  75         for (count = 0; count < 4; count++) {
  76                 if (in[count] > 255)
  77                         return -EINVAL;
  78                 addr[count] = in[count];
  79         }
  80         return 0;
  81 }
  82
  83 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  84 {
  85         sprintf(buf, "%pI6", addr);
  86 }
  87
  88 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  89 {
  90         const char *end, *end_tmp, *start;
  91         __u16 *in;
  92         char num[5];
  93         int num2, cnt, out, found, save_cnt;
  94         unsigned short in_tmp[8] = {0, };
  95
  96         cnt = out = found = save_cnt = num2 = 0;
  97         end = start = buf;
  98         in = (__u16 *) addr;
  99         memset(in, 0, 16);
 100         while (*end) {
 101                 end = strchr(start, ':');
 102                 if (end == NULL) {
 103                         end = buf + strlen(buf);
 104                         end_tmp = strchr(start, '\n');
 105                         if (end_tmp != NULL)
 106                                 end = end_tmp;
 107                         out = 1;
 108                 }
 109                 if ((end - start)) {
 110                         memset(num, 0, 5);
 111                         if ((end - start) > 4)
 112                                 return -EINVAL;
 113                         memcpy(num, start, end - start);
 114                         if (!qeth_l3_isxdigit(num))
 115                                 return -EINVAL;
 116                         sscanf(start, "%x", &num2);
 117                         if (found)
 118                                 in_tmp[save_cnt++] = num2;
 119                         else
 120                                 in[cnt++] = num2;
 121                         if (out)
 122                                 break;
 123                 } else {
 124                         if (found)
 125                                 return -EINVAL;
 126                         found = 1;
 127                 }
 128                 start = ++end;
 129         }
 130         if (cnt + save_cnt > 8)
 131                 return -EINVAL;
 132         cnt = 7;
 133         while (save_cnt)
 134                 in[cnt--] = in_tmp[--save_cnt];
 135         return 0;
 136 }
 137
 138 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 139                                 char *buf)
 140 {
 141         if (proto == QETH_PROT_IPV4)
 142                 qeth_l3_ipaddr4_to_string(addr, buf);
 143         else if (proto == QETH_PROT_IPV6)
 144                 qeth_l3_ipaddr6_to_string(addr, buf);
 145 }
 146
 147 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 148                                 __u8 *addr)
 149 {
 150         if (proto == QETH_PROT_IPV4)
 151                 return qeth_l3_string_to_ipaddr4(buf, addr);
 152         else if (proto == QETH_PROT_IPV6)
 153                 return qeth_l3_string_to_ipaddr6(buf, addr);
 154         else
 155                 return -EINVAL;
 156 }
 157
 158 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 159 {
 160         int i, j;
 161         u8 octet;
 162
 163         for (i = 0; i < len; ++i) {
 164                 octet = addr[i];
 165                 for (j = 7; j >= 0; --j) {
 166                         bits[i*8 + j] = octet & 1;
 167                         octet >>= 1;
 168                 }
 169         }
 170 }
 171
 172 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 173                                                 struct qeth_ipaddr *addr)
 174 {
 175         struct qeth_ipato_entry *ipatoe;
 176         u8 addr_bits[128] = {0, };
 177         u8 ipatoe_bits[128] = {0, };
 178         int rc = 0;
 179
 180         if (!card->ipato.enabled)
 181                 return 0;
 182
 183         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 184                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 185         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 186                 if (addr->proto != ipatoe->proto)
 187                         continue;
 188                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 189                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 190                                           4 : 16);
 191                 if (addr->proto == QETH_PROT_IPV4)
 192                         rc = !memcmp(addr_bits, ipatoe_bits,
 193                                      min(32, ipatoe->mask_bits));
 194                 else
 195                         rc = !memcmp(addr_bits, ipatoe_bits,
 196                                      min(128, ipatoe->mask_bits));
 197                 if (rc)
 198                         break;
 199         }
 200         /* invert? */
 201         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 202                 rc = !rc;
 203         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 204                 rc = !rc;
 205
 206         return rc;
 207 }
 208
 209 /*
 210  * Add IP to be added to todo list. If there is already an "add todo"
 211  * in this list we just incremenent the reference count.
 212  * Returns 0 if we  just incremented reference count.
 213  */
 214 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
 215                                         struct qeth_ipaddr *addr, int add)
 216 {
 217         struct qeth_ipaddr *tmp, *t;
 218         int found = 0;
 219
 220         if (card->options.sniffer)
 221                 return 0;
 222         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
 223                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
 224                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
 225                         return 0;
 226                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
 227                     (addr->proto       == QETH_PROT_IPV4)     &&
 228                     (tmp->type         == addr->type)         &&
 229                     (tmp->is_multicast == addr->is_multicast) &&
 230                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
 231                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
 232                         found = 1;
 233                         break;
 234                 }
 235                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
 236                     (addr->proto       == QETH_PROT_IPV6)      &&
 237                     (tmp->type         == addr->type)          &&
 238                     (tmp->is_multicast == addr->is_multicast)  &&
 239                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
 240                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 241                             sizeof(struct in6_addr)) == 0)) {
 242                         found = 1;
 243                         break;
 244                 }
 245         }
 246         if (found) {
 247                 if (addr->users != 0)
 248                         tmp->users += addr->users;
 249                 else
 250                         tmp->users += add ? 1 : -1;
 251                 if (tmp->users == 0) {
 252                         list_del(&tmp->entry);
 253                         kfree(tmp);
 254                 }
 255                 return 0;
 256         } else {
 257                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
 258                         list_add(&addr->entry, card->ip_tbd_list);
 259                 else {
 260                         if (addr->users == 0)
 261                                 addr->users += add ? 1 : -1;
 262                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
 263                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 264                                 QETH_CARD_TEXT(card, 2, "tkovaddr");
 265                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 266                         }
 267                         list_add_tail(&addr->entry, card->ip_tbd_list);
 268                 }
 269                 return 1;
 270         }
 271 }
 272
 273 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 274 {
 275         unsigned long flags;
 276         int rc = 0;
 277
 278         QETH_CARD_TEXT(card, 4, "delip");
 279
 280         if (addr->proto == QETH_PROT_IPV4)
 281                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 282         else {
 283                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 284                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 285         }
 286         spin_lock_irqsave(&card->ip_lock, flags);
 287         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
 288         spin_unlock_irqrestore(&card->ip_lock, flags);
 289         return rc;
 290 }
 291
 292 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 293 {
 294         unsigned long flags;
 295         int rc = 0;
 296
 297         QETH_CARD_TEXT(card, 4, "addip");
 298         if (addr->proto == QETH_PROT_IPV4)
 299                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 300         else {
 301                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 302                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 303         }
 304         spin_lock_irqsave(&card->ip_lock, flags);
 305         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
 306         spin_unlock_irqrestore(&card->ip_lock, flags);
 307         return rc;
 308 }
 309
 310
 311 struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 312                                 enum qeth_prot_versions prot)
 313 {
 314         struct qeth_ipaddr *addr;
 315
 316         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 317         if (addr == NULL) {
 318                 return NULL;
 319         }
 320         addr->type = QETH_IP_TYPE_NORMAL;
 321         addr->proto = prot;
 322         return addr;
 323 }
 324
 325 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
 326 {
 327         struct qeth_ipaddr *iptodo;
 328         unsigned long flags;
 329
 330         QETH_CARD_TEXT(card, 4, "delmc");
 331         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
 332         if (!iptodo) {
 333                 QETH_CARD_TEXT(card, 2, "dmcnomem");
 334                 return;
 335         }
 336         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
 337         spin_lock_irqsave(&card->ip_lock, flags);
 338         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
 339                 kfree(iptodo);
 340         spin_unlock_irqrestore(&card->ip_lock, flags);
 341 }
 342
 343 /*
 344  * Add/remove address to/from card's ip list, i.e. try to add or remove
 345  * reference to/from an IP address that is already registered on the card.
 346  * Returns:
 347  *      0  address was on card and its reference count has been adjusted,
 348  *         but is still > 0, so nothing has to be done
 349  *         also returns 0 if card was not on card and the todo was to delete
 350  *         the address -> there is also nothing to be done
 351  *      1  address was not on card and the todo is to add it to the card's ip
 352  *         list
 353  *      -1 address was on card and its reference count has been decremented
 354  *         to <= 0 by the todo -> address must be removed from card
 355  */
 356 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
 357                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
 358 {
 359         struct qeth_ipaddr *addr;
 360         int found = 0;
 361
 362         list_for_each_entry(addr, &card->ip_list, entry) {
 363                 if ((addr->proto == QETH_PROT_IPV4) &&
 364                     (todo->proto == QETH_PROT_IPV4) &&
 365                     (addr->type == todo->type) &&
 366                     (addr->u.a4.addr == todo->u.a4.addr) &&
 367                     (addr->u.a4.mask == todo->u.a4.mask)) {
 368                         found = 1;
 369                         break;
 370                 }
 371                 if ((addr->proto == QETH_PROT_IPV6) &&
 372                     (todo->proto == QETH_PROT_IPV6) &&
 373                     (addr->type == todo->type) &&
 374                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
 375                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
 376                             sizeof(struct in6_addr)) == 0)) {
 377                         found = 1;
 378                         break;
 379                 }
 380         }
 381         if (found) {
 382                 addr->users += todo->users;
 383                 if (addr->users <= 0) {
 384                         *__addr = addr;
 385                         return -1;
 386                 } else {
 387                         /* for VIPA and RXIP limit refcount to 1 */
 388                         if (addr->type != QETH_IP_TYPE_NORMAL)
 389                                 addr->users = 1;
 390                         return 0;
 391                 }
 392         }
 393         if (todo->users > 0) {
 394                 /* for VIPA and RXIP limit refcount to 1 */
 395                 if (todo->type != QETH_IP_TYPE_NORMAL)
 396                         todo->users = 1;
 397                 return 1;
 398         } else
 399                 return 0;
 400 }
 401
 402 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
 403                                         unsigned long *flags)
 404 {
 405         struct list_head fail_list;
 406         struct qeth_ipaddr *addr, *tmp;
 407         int rc;
 408
 409         INIT_LIST_HEAD(&fail_list);
 410 again:
 411         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
 412                 if (addr->is_multicast) {
 413                         list_del(&addr->entry);
 414                         spin_unlock_irqrestore(&card->ip_lock, *flags);
 415                         rc = qeth_l3_deregister_addr_entry(card, addr);
 416                         spin_lock_irqsave(&card->ip_lock, *flags);
 417                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
 418                                 kfree(addr);
 419                         else
 420                                 list_add_tail(&addr->entry, &fail_list);
 421                         goto again;
 422                 }
 423         }
 424         list_splice(&fail_list, &card->ip_list);
 425 }
 426
 427 void qeth_l3_set_ip_addr_list(struct qeth_card *card)
 428 {
 429         struct list_head *tbd_list;
 430         struct qeth_ipaddr *todo, *addr;
 431         unsigned long flags;
 432         int rc;
 433
 434         QETH_CARD_TEXT(card, 2, "sdiplist");
 435         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
 436
 437         if ((card->state != CARD_STATE_UP &&
 438              card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
 439                 return;
 440         }
 441
 442         spin_lock_irqsave(&card->ip_lock, flags);
 443         tbd_list = card->ip_tbd_list;
 444         card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC);
 445         if (!card->ip_tbd_list) {
 446                 QETH_CARD_TEXT(card, 0, "silnomem");
 447                 card->ip_tbd_list = tbd_list;
 448                 spin_unlock_irqrestore(&card->ip_lock, flags);
 449                 return;
 450         } else
 451                 INIT_LIST_HEAD(card->ip_tbd_list);
 452
 453         while (!list_empty(tbd_list)) {
 454                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
 455                 list_del(&todo->entry);
 456                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
 457                         __qeth_l3_delete_all_mc(card, &flags);
 458                         kfree(todo);
 459                         continue;
 460                 }
 461                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
 462                 if (rc == 0) {
 463                         /* nothing to be done; only adjusted refcount */
 464                         kfree(todo);
 465                 } else if (rc == 1) {
 466                         /* new entry to be added to on-card list */
 467                         spin_unlock_irqrestore(&card->ip_lock, flags);
 468                         rc = qeth_l3_register_addr_entry(card, todo);
 469                         spin_lock_irqsave(&card->ip_lock, flags);
 470                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
 471                                 list_add_tail(&todo->entry, &card->ip_list);
 472                         else
 473                                 kfree(todo);
 474                 } else if (rc == -1) {
 475                         /* on-card entry to be removed */
 476                         list_del_init(&addr->entry);
 477                         spin_unlock_irqrestore(&card->ip_lock, flags);
 478                         rc = qeth_l3_deregister_addr_entry(card, addr);
 479                         spin_lock_irqsave(&card->ip_lock, flags);
 480                         if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
 481                                 kfree(addr);
 482                         else
 483                                 list_add_tail(&addr->entry, &card->ip_list);
 484                         kfree(todo);
 485                 }
 486         }
 487         spin_unlock_irqrestore(&card->ip_lock, flags);
 488         kfree(tbd_list);
 489 }
 490
 491 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
 492 {
 493         struct qeth_ipaddr *addr, *tmp;
 494         unsigned long flags;
 495
 496         QETH_CARD_TEXT(card, 4, "clearip");
 497         if (recover && card->options.sniffer)
 498                 return;
 499         spin_lock_irqsave(&card->ip_lock, flags);
 500         /* clear todo list */
 501         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
 502                 list_del(&addr->entry);
 503                 kfree(addr);
 504         }
 505
 506         while (!list_empty(&card->ip_list)) {
 507                 addr = list_entry(card->ip_list.next,
 508                                   struct qeth_ipaddr, entry);
 509                 list_del_init(&addr->entry);
 510                 if (!recover || addr->is_multicast) {
 511                         kfree(addr);
 512                         continue;
 513                 }
 514                 list_add_tail(&addr->entry, card->ip_tbd_list);
 515         }
 516         spin_unlock_irqrestore(&card->ip_lock, flags);
 517 }
 518
 519 static int qeth_l3_address_exists_in_list(struct list_head *list,
 520                 struct qeth_ipaddr *addr, int same_type)
 521 {
 522         struct qeth_ipaddr *tmp;
 523
 524         list_for_each_entry(tmp, list, entry) {
 525                 if ((tmp->proto == QETH_PROT_IPV4) &&
 526                     (addr->proto == QETH_PROT_IPV4) &&
 527                     ((same_type && (tmp->type == addr->type)) ||
 528                     (!same_type && (tmp->type != addr->type))) &&
 529                     (tmp->u.a4.addr == addr->u.a4.addr))
 530                         return 1;
 531
 532                 if ((tmp->proto == QETH_PROT_IPV6) &&
 533                     (addr->proto == QETH_PROT_IPV6) &&
 534                     ((same_type && (tmp->type == addr->type)) ||
 535                     (!same_type && (tmp->type != addr->type))) &&
 536                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 537                             sizeof(struct in6_addr)) == 0))
 538                         return 1;
 539
 540         }
 541         return 0;
 542 }
 543
 544 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 545                         struct qeth_ipaddr *addr, int ipacmd)
 546 {
 547         int rc;
 548         struct qeth_cmd_buffer *iob;
 549         struct qeth_ipa_cmd *cmd;
 550
 551         QETH_CARD_TEXT(card, 4, "setdelmc");
 552
 553         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 554         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 555         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 556         if (addr->proto == QETH_PROT_IPV6)
 557                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 558                        sizeof(struct in6_addr));
 559         else
 560                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 561
 562         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 563
 564         return rc;
 565 }
 566
 567 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 568 {
 569         int i, j;
 570         for (i = 0; i < 16; i++) {
 571                 j = (len) - (i * 8);
 572                 if (j >= 8)
 573                         netmask[i] = 0xff;
 574                 else if (j > 0)
 575                         netmask[i] = (u8)(0xFF00 >> j);
 576                 else
 577                         netmask[i] = 0;
 578         }
 579 }
 580
 581 static int qeth_l3_send_setdelip(struct qeth_card *card,
 582                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 583 {
 584         int rc;
 585         struct qeth_cmd_buffer *iob;
 586         struct qeth_ipa_cmd *cmd;
 587         __u8 netmask[16];
 588
 589         QETH_CARD_TEXT(card, 4, "setdelip");
 590         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 591
 592         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 593         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 594         if (addr->proto == QETH_PROT_IPV6) {
 595                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 596                        sizeof(struct in6_addr));
 597                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 598                 memcpy(cmd->data.setdelip6.mask, netmask,
 599                        sizeof(struct in6_addr));
 600                 cmd->data.setdelip6.flags = flags;
 601         } else {
 602                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 603                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 604                 cmd->data.setdelip4.flags = flags;
 605         }
 606
 607         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 608
 609         return rc;
 610 }
 611
 612 static int qeth_l3_send_setrouting(struct qeth_card *card,
 613         enum qeth_routing_types type, enum qeth_prot_versions prot)
 614 {
 615         int rc;
 616         struct qeth_ipa_cmd *cmd;
 617         struct qeth_cmd_buffer *iob;
 618
 619         QETH_CARD_TEXT(card, 4, "setroutg");
 620         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 621         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 622         cmd->data.setrtg.type = (type);
 623         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 624
 625         return rc;
 626 }
 627
 628 static void qeth_l3_correct_routing_type(struct qeth_card *card,
 629                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 630 {
 631         if (card->info.type == QETH_CARD_TYPE_IQD) {
 632                 switch (*type) {
 633                 case NO_ROUTER:
 634                 case PRIMARY_CONNECTOR:
 635                 case SECONDARY_CONNECTOR:
 636                 case MULTICAST_ROUTER:
 637                         return;
 638                 default:
 639                         goto out_inval;
 640                 }
 641         } else {
 642                 switch (*type) {
 643                 case NO_ROUTER:
 644                 case PRIMARY_ROUTER:
 645                 case SECONDARY_ROUTER:
 646                         return;
 647                 case MULTICAST_ROUTER:
 648                         if (qeth_is_ipafunc_supported(card, prot,
 649                                                       IPA_OSA_MC_ROUTER))
 650                                 return;
 651                 default:
 652                         goto out_inval;
 653                 }
 654         }
 655 out_inval:
 656         *type = NO_ROUTER;
 657 }
 658
 659 int qeth_l3_setrouting_v4(struct qeth_card *card)
 660 {
 661         int rc;
 662
 663         QETH_CARD_TEXT(card, 3, "setrtg4");
 664
 665         qeth_l3_correct_routing_type(card, &card->options.route4.type,
 666                                   QETH_PROT_IPV4);
 667
 668         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 669                                   QETH_PROT_IPV4);
 670         if (rc) {
 671                 card->options.route4.type = NO_ROUTER;
 672                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 673                         " on %s. Type set to 'no router'.\n", rc,
 674                         QETH_CARD_IFNAME(card));
 675         }
 676         return rc;
 677 }
 678
 679 int qeth_l3_setrouting_v6(struct qeth_card *card)
 680 {
 681         int rc = 0;
 682
 683         QETH_CARD_TEXT(card, 3, "setrtg6");
 684 #ifdef CONFIG_QETH_IPV6
 685
 686         if (!qeth_is_supported(card, IPA_IPV6))
 687                 return 0;
 688         qeth_l3_correct_routing_type(card, &card->options.route6.type,
 689                                   QETH_PROT_IPV6);
 690
 691         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 692                                   QETH_PROT_IPV6);
 693         if (rc) {
 694                 card->options.route6.type = NO_ROUTER;
 695                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 696                         " on %s. Type set to 'no router'.\n", rc,
 697                         QETH_CARD_IFNAME(card));
 698         }
 699 #endif
 700         return rc;
 701 }
 702
 703 /*
 704  * IP address takeover related functions
 705  */
 706 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 707 {
 708
 709         struct qeth_ipato_entry *ipatoe, *tmp;
 710         unsigned long flags;
 711
 712         spin_lock_irqsave(&card->ip_lock, flags);
 713         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 714                 list_del(&ipatoe->entry);
 715                 kfree(ipatoe);
 716         }
 717         spin_unlock_irqrestore(&card->ip_lock, flags);
 718 }
 719
 720 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 721                                 struct qeth_ipato_entry *new)
 722 {
 723         struct qeth_ipato_entry *ipatoe;
 724         unsigned long flags;
 725         int rc = 0;
 726
 727         QETH_CARD_TEXT(card, 2, "addipato");
 728         spin_lock_irqsave(&card->ip_lock, flags);
 729         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 730                 if (ipatoe->proto != new->proto)
 731                         continue;
 732                 if (!memcmp(ipatoe->addr, new->addr,
 733                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 734                     (ipatoe->mask_bits == new->mask_bits)) {
 735                         rc = -EEXIST;
 736                         break;
 737                 }
 738         }
 739         if (!rc)
 740                 list_add_tail(&new->entry, &card->ipato.entries);
 741
 742         spin_unlock_irqrestore(&card->ip_lock, flags);
 743         return rc;
 744 }
 745
 746 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 747                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 748 {
 749         struct qeth_ipato_entry *ipatoe, *tmp;
 750         unsigned long flags;
 751
 752         QETH_CARD_TEXT(card, 2, "delipato");
 753         spin_lock_irqsave(&card->ip_lock, flags);
 754         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 755                 if (ipatoe->proto != proto)
 756                         continue;
 757                 if (!memcmp(ipatoe->addr, addr,
 758                             (proto == QETH_PROT_IPV4)? 4:16) &&
 759                     (ipatoe->mask_bits == mask_bits)) {
 760                         list_del(&ipatoe->entry);
 761                         kfree(ipatoe);
 762                 }
 763         }
 764         spin_unlock_irqrestore(&card->ip_lock, flags);
 765 }
 766
 767 /*
 768  * VIPA related functions
 769  */
 770 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 771               const u8 *addr)
 772 {
 773         struct qeth_ipaddr *ipaddr;
 774         unsigned long flags;
 775         int rc = 0;
 776
 777         ipaddr = qeth_l3_get_addr_buffer(proto);
 778         if (ipaddr) {
 779                 if (proto == QETH_PROT_IPV4) {
 780                         QETH_CARD_TEXT(card, 2, "addvipa4");
 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, "addvipa6");
 785                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 786                         ipaddr->u.a6.pfxlen = 0;
 787                 }
 788                 ipaddr->type = QETH_IP_TYPE_VIPA;
 789                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 790                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 791         } else
 792                 return -ENOMEM;
 793         spin_lock_irqsave(&card->ip_lock, flags);
 794         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 795             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 796                 rc = -EEXIST;
 797         spin_unlock_irqrestore(&card->ip_lock, flags);
 798         if (rc) {
 799                 return rc;
 800         }
 801         if (!qeth_l3_add_ip(card, ipaddr))
 802                 kfree(ipaddr);
 803         qeth_l3_set_ip_addr_list(card);
 804         return rc;
 805 }
 806
 807 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 808               const u8 *addr)
 809 {
 810         struct qeth_ipaddr *ipaddr;
 811
 812         ipaddr = qeth_l3_get_addr_buffer(proto);
 813         if (ipaddr) {
 814                 if (proto == QETH_PROT_IPV4) {
 815                         QETH_CARD_TEXT(card, 2, "delvipa4");
 816                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 817                         ipaddr->u.a4.mask = 0;
 818                 } else if (proto == QETH_PROT_IPV6) {
 819                         QETH_CARD_TEXT(card, 2, "delvipa6");
 820                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 821                         ipaddr->u.a6.pfxlen = 0;
 822                 }
 823                 ipaddr->type = QETH_IP_TYPE_VIPA;
 824         } else
 825                 return;
 826         if (!qeth_l3_delete_ip(card, ipaddr))
 827                 kfree(ipaddr);
 828         qeth_l3_set_ip_addr_list(card);
 829 }
 830
 831 /*
 832  * proxy ARP related functions
 833  */
 834 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 835               const u8 *addr)
 836 {
 837         struct qeth_ipaddr *ipaddr;
 838         unsigned long flags;
 839         int rc = 0;
 840
 841         ipaddr = qeth_l3_get_addr_buffer(proto);
 842         if (ipaddr) {
 843                 if (proto == QETH_PROT_IPV4) {
 844                         QETH_CARD_TEXT(card, 2, "addrxip4");
 845                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 846                         ipaddr->u.a4.mask = 0;
 847                 } else if (proto == QETH_PROT_IPV6) {
 848                         QETH_CARD_TEXT(card, 2, "addrxip6");
 849                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 850                         ipaddr->u.a6.pfxlen = 0;
 851                 }
 852                 ipaddr->type = QETH_IP_TYPE_RXIP;
 853                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 854                 ipaddr->del_flags = 0;
 855         } else
 856                 return -ENOMEM;
 857         spin_lock_irqsave(&card->ip_lock, flags);
 858         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 859             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 860                 rc = -EEXIST;
 861         spin_unlock_irqrestore(&card->ip_lock, flags);
 862         if (rc) {
 863                 return rc;
 864         }
 865         if (!qeth_l3_add_ip(card, ipaddr))
 866                 kfree(ipaddr);
 867         qeth_l3_set_ip_addr_list(card);
 868         return 0;
 869 }
 870
 871 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 872                         const u8 *addr)
 873 {
 874         struct qeth_ipaddr *ipaddr;
 875
 876         ipaddr = qeth_l3_get_addr_buffer(proto);
 877         if (ipaddr) {
 878                 if (proto == QETH_PROT_IPV4) {
 879                         QETH_CARD_TEXT(card, 2, "addrxip4");
 880                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 881                         ipaddr->u.a4.mask = 0;
 882                 } else if (proto == QETH_PROT_IPV6) {
 883                         QETH_CARD_TEXT(card, 2, "addrxip6");
 884                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 885                         ipaddr->u.a6.pfxlen = 0;
 886                 }
 887                 ipaddr->type = QETH_IP_TYPE_RXIP;
 888         } else
 889                 return;
 890         if (!qeth_l3_delete_ip(card, ipaddr))
 891                 kfree(ipaddr);
 892         qeth_l3_set_ip_addr_list(card);
 893 }
 894
 895 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 896                                 struct qeth_ipaddr *addr)
 897 {
 898         char buf[50];
 899         int rc = 0;
 900         int cnt = 3;
 901
 902         if (addr->proto == QETH_PROT_IPV4) {
 903                 QETH_CARD_TEXT(card, 2, "setaddr4");
 904                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 905         } else if (addr->proto == QETH_PROT_IPV6) {
 906                 QETH_CARD_TEXT(card, 2, "setaddr6");
 907                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 908                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 909         } else {
 910                 QETH_CARD_TEXT(card, 2, "setaddr?");
 911                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 912         }
 913         do {
 914                 if (addr->is_multicast)
 915                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 916                 else
 917                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 918                                         addr->set_flags);
 919                 if (rc)
 920                         QETH_CARD_TEXT(card, 2, "failed");
 921         } while ((--cnt > 0) && rc);
 922         if (rc) {
 923                 QETH_CARD_TEXT(card, 2, "FAILED");
 924                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 925                 dev_warn(&card->gdev->dev,
 926                         "Registering IP address %s failed\n", buf);
 927         }
 928         return rc;
 929 }
 930
 931 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 932                                                 struct qeth_ipaddr *addr)
 933 {
 934         int rc = 0;
 935
 936         if (addr->proto == QETH_PROT_IPV4) {
 937                 QETH_CARD_TEXT(card, 2, "deladdr4");
 938                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 939         } else if (addr->proto == QETH_PROT_IPV6) {
 940                 QETH_CARD_TEXT(card, 2, "deladdr6");
 941                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 942                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 943         } else {
 944                 QETH_CARD_TEXT(card, 2, "deladdr?");
 945                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 946         }
 947         if (addr->is_multicast)
 948                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 949         else
 950                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 951                                         addr->del_flags);
 952         if (rc)
 953                 QETH_CARD_TEXT(card, 2, "failed");
 954
 955         return rc;
 956 }
 957
 958 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 959 {
 960         if (cast_type == RTN_MULTICAST)
 961                 return QETH_CAST_MULTICAST;
 962         if (cast_type == RTN_BROADCAST)
 963                 return QETH_CAST_BROADCAST;
 964         return QETH_CAST_UNICAST;
 965 }
 966
 967 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 968 {
 969         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 970         if (cast_type == RTN_MULTICAST)
 971                 return ct | QETH_CAST_MULTICAST;
 972         if (cast_type == RTN_ANYCAST)
 973                 return ct | QETH_CAST_ANYCAST;
 974         if (cast_type == RTN_BROADCAST)
 975                 return ct | QETH_CAST_BROADCAST;
 976         return ct | QETH_CAST_UNICAST;
 977 }
 978
 979 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
 980                                         __u32 mode)
 981 {
 982         int rc;
 983         struct qeth_cmd_buffer *iob;
 984         struct qeth_ipa_cmd *cmd;
 985
 986         QETH_CARD_TEXT(card, 4, "adpmode");
 987
 988         iob = qeth_get_adapter_cmd(card, command,
 989                                    sizeof(struct qeth_ipacmd_setadpparms));
 990         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 991         cmd->data.setadapterparms.data.mode = mode;
 992         rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
 993                                NULL);
 994         return rc;
 995 }
 996
 997 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
 998 {
 999         int rc;
1000
1001         QETH_CARD_TEXT(card, 4, "adphstr");
1002
1003         if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1004                 rc = qeth_l3_send_setadp_mode(card,
1005                                         IPA_SETADP_SET_BROADCAST_MODE,
1006                                         card->options.broadcast_mode);
1007                 if (rc)
1008                         QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1009                                    "device %s: x%x\n",
1010                                    CARD_BUS_ID(card), rc);
1011                 rc = qeth_l3_send_setadp_mode(card,
1012                                         IPA_SETADP_ALTER_MAC_ADDRESS,
1013                                         card->options.macaddr_mode);
1014                 if (rc)
1015                         QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1016                                    "device %s: x%x\n", CARD_BUS_ID(card), rc);
1017                 return rc;
1018         }
1019         if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1020                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1021                            "to set broadcast mode, using ALLRINGS "
1022                            "on device %s:\n", CARD_BUS_ID(card));
1023         if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1024                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1025                            "to set macaddr mode, using NONCANONICAL "
1026                            "on device %s:\n", CARD_BUS_ID(card));
1027         return 0;
1028 }
1029
1030 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1031 {
1032         int rc;
1033
1034         QETH_DBF_TEXT(SETUP, 2, "setadprm");
1035
1036         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1037                 dev_info(&card->gdev->dev,
1038                         "set adapter parameters not supported.\n");
1039                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1040                 return 0;
1041         }
1042         rc = qeth_query_setadapterparms(card);
1043         if (rc) {
1044                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1045                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1046                 return rc;
1047         }
1048         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1049                 rc = qeth_setadpparms_change_macaddr(card);
1050                 if (rc)
1051                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1052                                 " address failed\n");
1053         }
1054
1055         if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1056             (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1057                 rc = qeth_l3_setadapter_hstr(card);
1058
1059         return rc;
1060 }
1061
1062 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1063                         struct qeth_reply *reply, unsigned long data)
1064 {
1065         struct qeth_ipa_cmd *cmd;
1066
1067         QETH_CARD_TEXT(card, 4, "defadpcb");
1068
1069         cmd = (struct qeth_ipa_cmd *) data;
1070         if (cmd->hdr.return_code == 0) {
1071                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1072                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1073                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1074                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1075                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1076         }
1077         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1078             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1079                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1080                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1081         }
1082         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1083             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1084                 card->info.tx_csum_mask =
1085                         cmd->data.setassparms.data.flags_32bit;
1086                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1087         }
1088
1089         return 0;
1090 }
1091
1092 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1093         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1094         __u16 len, enum qeth_prot_versions prot)
1095 {
1096         struct qeth_cmd_buffer *iob;
1097         struct qeth_ipa_cmd *cmd;
1098
1099         QETH_CARD_TEXT(card, 4, "getasscm");
1100         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1101
1102         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1103         cmd->data.setassparms.hdr.assist_no = ipa_func;
1104         cmd->data.setassparms.hdr.length = 8 + len;
1105         cmd->data.setassparms.hdr.command_code = cmd_code;
1106         cmd->data.setassparms.hdr.return_code = 0;
1107         cmd->data.setassparms.hdr.seq_no = 0;
1108
1109         return iob;
1110 }
1111
1112 static int qeth_l3_send_setassparms(struct qeth_card *card,
1113         struct qeth_cmd_buffer *iob, __u16 len, long data,
1114         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1115                 unsigned long),
1116         void *reply_param)
1117 {
1118         int rc;
1119         struct qeth_ipa_cmd *cmd;
1120
1121         QETH_CARD_TEXT(card, 4, "sendassp");
1122
1123         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1124         if (len <= sizeof(__u32))
1125                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1126         else   /* (len > sizeof(__u32)) */
1127                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1128
1129         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1130         return rc;
1131 }
1132
1133 #ifdef CONFIG_QETH_IPV6
1134 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1135                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1136 {
1137         int rc;
1138         struct qeth_cmd_buffer *iob;
1139
1140         QETH_CARD_TEXT(card, 4, "simassp6");
1141         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1142                                        0, QETH_PROT_IPV6);
1143         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1144                                    qeth_l3_default_setassparms_cb, NULL);
1145         return rc;
1146 }
1147 #endif
1148
1149 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1150                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1151 {
1152         int rc;
1153         int length = 0;
1154         struct qeth_cmd_buffer *iob;
1155
1156         QETH_CARD_TEXT(card, 4, "simassp4");
1157         if (data)
1158                 length = sizeof(__u32);
1159         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1160                                        length, QETH_PROT_IPV4);
1161         rc = qeth_l3_send_setassparms(card, iob, length, data,
1162                                    qeth_l3_default_setassparms_cb, NULL);
1163         return rc;
1164 }
1165
1166 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1167 {
1168         int rc;
1169
1170         QETH_CARD_TEXT(card, 3, "ipaarp");
1171
1172         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1173                 dev_info(&card->gdev->dev,
1174                         "ARP processing not supported on %s!\n",
1175                         QETH_CARD_IFNAME(card));
1176                 return 0;
1177         }
1178         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1179                                         IPA_CMD_ASS_START, 0);
1180         if (rc) {
1181                 dev_warn(&card->gdev->dev,
1182                         "Starting ARP processing support for %s failed\n",
1183                         QETH_CARD_IFNAME(card));
1184         }
1185         return rc;
1186 }
1187
1188 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1189 {
1190         int rc;
1191
1192         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1193
1194         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1195                 dev_info(&card->gdev->dev,
1196                         "Hardware IP fragmentation not supported on %s\n",
1197                         QETH_CARD_IFNAME(card));
1198                 return  -EOPNOTSUPP;
1199         }
1200
1201         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1202                                           IPA_CMD_ASS_START, 0);
1203         if (rc) {
1204                 dev_warn(&card->gdev->dev,
1205                         "Starting IP fragmentation support for %s failed\n",
1206                         QETH_CARD_IFNAME(card));
1207         } else
1208                 dev_info(&card->gdev->dev,
1209                         "Hardware IP fragmentation enabled \n");
1210         return rc;
1211 }
1212
1213 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1214 {
1215         int rc;
1216
1217         QETH_CARD_TEXT(card, 3, "stsrcmac");
1218
1219         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1220                 dev_info(&card->gdev->dev,
1221                         "Inbound source MAC-address not supported on %s\n",
1222                         QETH_CARD_IFNAME(card));
1223                 return -EOPNOTSUPP;
1224         }
1225
1226         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1227                                           IPA_CMD_ASS_START, 0);
1228         if (rc)
1229                 dev_warn(&card->gdev->dev,
1230                         "Starting source MAC-address support for %s failed\n",
1231                         QETH_CARD_IFNAME(card));
1232         return rc;
1233 }
1234
1235 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1236 {
1237         int rc = 0;
1238
1239         QETH_CARD_TEXT(card, 3, "strtvlan");
1240
1241         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1242                 dev_info(&card->gdev->dev,
1243                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1244                 return -EOPNOTSUPP;
1245         }
1246
1247         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1248                                           IPA_CMD_ASS_START, 0);
1249         if (rc) {
1250                 dev_warn(&card->gdev->dev,
1251                         "Starting VLAN support for %s failed\n",
1252                         QETH_CARD_IFNAME(card));
1253         } else {
1254                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1255         }
1256         return rc;
1257 }
1258
1259 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1260 {
1261         int rc;
1262
1263         QETH_CARD_TEXT(card, 3, "stmcast");
1264
1265         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1266                 dev_info(&card->gdev->dev,
1267                         "Multicast not supported on %s\n",
1268                         QETH_CARD_IFNAME(card));
1269                 return -EOPNOTSUPP;
1270         }
1271
1272         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1273                                           IPA_CMD_ASS_START, 0);
1274         if (rc) {
1275                 dev_warn(&card->gdev->dev,
1276                         "Starting multicast support for %s failed\n",
1277                         QETH_CARD_IFNAME(card));
1278         } else {
1279                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1280                 card->dev->flags |= IFF_MULTICAST;
1281         }
1282         return rc;
1283 }
1284
1285 #ifdef CONFIG_QETH_IPV6
1286 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1287 {
1288         int rc;
1289
1290         QETH_CARD_TEXT(card, 3, "softipv6");
1291
1292         if (card->info.type == QETH_CARD_TYPE_IQD)
1293                 goto out;
1294
1295         rc = qeth_query_ipassists(card, QETH_PROT_IPV6);
1296         if (rc) {
1297                 dev_err(&card->gdev->dev,
1298                         "Activating IPv6 support for %s failed\n",
1299                         QETH_CARD_IFNAME(card));
1300                 return rc;
1301         }
1302         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1303                                           IPA_CMD_ASS_START, 3);
1304         if (rc) {
1305                 dev_err(&card->gdev->dev,
1306                         "Activating IPv6 support for %s failed\n",
1307                         QETH_CARD_IFNAME(card));
1308                 return rc;
1309         }
1310         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1311                                                IPA_CMD_ASS_START);
1312         if (rc) {
1313                 dev_err(&card->gdev->dev,
1314                         "Activating IPv6 support for %s failed\n",
1315                          QETH_CARD_IFNAME(card));
1316                 return rc;
1317         }
1318         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1319                                                IPA_CMD_ASS_START);
1320         if (rc) {
1321                 dev_warn(&card->gdev->dev,
1322                         "Enabling the passthrough mode for %s failed\n",
1323                         QETH_CARD_IFNAME(card));
1324                 return rc;
1325         }
1326 out:
1327         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1328         return 0;
1329 }
1330 #endif
1331
1332 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1333 {
1334         int rc = 0;
1335
1336         QETH_CARD_TEXT(card, 3, "strtipv6");
1337
1338         if (!qeth_is_supported(card, IPA_IPV6)) {
1339                 dev_info(&card->gdev->dev,
1340                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1341                 return 0;
1342         }
1343 #ifdef CONFIG_QETH_IPV6
1344         rc = qeth_l3_softsetup_ipv6(card);
1345 #endif
1346         return rc ;
1347 }
1348
1349 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1350 {
1351         int rc;
1352
1353         QETH_CARD_TEXT(card, 3, "stbrdcst");
1354         card->info.broadcast_capable = 0;
1355         if (!qeth_is_supported(card, IPA_FILTERING)) {
1356                 dev_info(&card->gdev->dev,
1357                         "Broadcast not supported on %s\n",
1358                         QETH_CARD_IFNAME(card));
1359                 rc = -EOPNOTSUPP;
1360                 goto out;
1361         }
1362         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1363                                           IPA_CMD_ASS_START, 0);
1364         if (rc) {
1365                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1366                         "%s failed\n", QETH_CARD_IFNAME(card));
1367                 goto out;
1368         }
1369
1370         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1371                                           IPA_CMD_ASS_CONFIGURE, 1);
1372         if (rc) {
1373                 dev_warn(&card->gdev->dev,
1374                         "Setting up broadcast filtering for %s failed\n",
1375                         QETH_CARD_IFNAME(card));
1376                 goto out;
1377         }
1378         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1379         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1380         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1381                                           IPA_CMD_ASS_ENABLE, 1);
1382         if (rc) {
1383                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1384                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1385                 goto out;
1386         }
1387         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1388 out:
1389         if (card->info.broadcast_capable)
1390                 card->dev->flags |= IFF_BROADCAST;
1391         else
1392                 card->dev->flags &= ~IFF_BROADCAST;
1393         return rc;
1394 }
1395
1396 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1397 {
1398         int rc;
1399
1400         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1401                                           IPA_CMD_ASS_START, 0);
1402         if (rc) {
1403                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1404                         "failed, using SW checksumming\n",
1405                         QETH_CARD_IFNAME(card));
1406                 return rc;
1407         }
1408         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1409                                           IPA_CMD_ASS_ENABLE,
1410                                           card->info.csum_mask);
1411         if (rc) {
1412                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1413                         "failed, using SW checksumming\n",
1414                         QETH_CARD_IFNAME(card));
1415                 return rc;
1416         }
1417         return 0;
1418 }
1419
1420 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on)
1421 {
1422         int rc = 0;
1423
1424         if (on) {
1425                 rc = qeth_l3_send_checksum_command(card);
1426                 if (rc)
1427                         return -EIO;
1428                 dev_info(&card->gdev->dev,
1429                         "HW Checksumming (inbound) enabled\n");
1430         } else {
1431                 rc = qeth_l3_send_simple_setassparms(card,
1432                         IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1433                 if (rc)
1434                         return -EIO;
1435         }
1436
1437         return 0;
1438 }
1439
1440 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1441 {
1442         QETH_CARD_TEXT(card, 3, "strtcsum");
1443
1444         if (card->dev->features & NETIF_F_RXCSUM) {
1445                 rtnl_lock();
1446                 /* force set_features call */
1447                 card->dev->features &= ~NETIF_F_RXCSUM;
1448                 netdev_update_features(card->dev);
1449                 rtnl_unlock();
1450         }
1451         return 0;
1452 }
1453
1454 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1455 {
1456         int rc = 0;
1457
1458         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1459                 return rc;
1460         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1461                           IPA_CMD_ASS_START, 0);
1462         if (rc)
1463                 goto err_out;
1464         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1465                           IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1466         if (rc)
1467                 goto err_out;
1468         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1469         return rc;
1470 err_out:
1471         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1472                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1473         return rc;
1474 }
1475
1476 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1477 {
1478         int rc;
1479
1480         QETH_CARD_TEXT(card, 3, "sttso");
1481
1482         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1483                 dev_info(&card->gdev->dev,
1484                         "Outbound TSO not supported on %s\n",
1485                         QETH_CARD_IFNAME(card));
1486                 rc = -EOPNOTSUPP;
1487         } else {
1488                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1489                                                 IPA_CMD_ASS_START, 0);
1490                 if (rc)
1491                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1492                                 "segmentation offload for %s failed\n",
1493                                 QETH_CARD_IFNAME(card));
1494                 else
1495                         dev_info(&card->gdev->dev,
1496                                 "Outbound TSO enabled\n");
1497         }
1498         if (rc)
1499                 card->dev->features &= ~NETIF_F_TSO;
1500         return rc;
1501 }
1502
1503 static int qeth_l3_start_ipassists(struct qeth_card *card)
1504 {
1505         QETH_CARD_TEXT(card, 3, "strtipas");
1506
1507         qeth_set_access_ctrl_online(card);      /* go on*/
1508         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1509         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1510         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1511         qeth_l3_start_ipa_vlan(card);           /* go on*/
1512         qeth_l3_start_ipa_multicast(card);              /* go on*/
1513         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1514         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1515         qeth_l3_start_ipa_checksum(card);               /* go on*/
1516         qeth_l3_start_ipa_tx_checksum(card);
1517         qeth_l3_start_ipa_tso(card);            /* go on*/
1518         return 0;
1519 }
1520
1521 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1522                 struct qeth_reply *reply, unsigned long data)
1523 {
1524         struct qeth_ipa_cmd *cmd;
1525
1526         cmd = (struct qeth_ipa_cmd *) data;
1527         if (cmd->hdr.return_code == 0)
1528                 memcpy(card->dev->dev_addr,
1529                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1530         else
1531                 random_ether_addr(card->dev->dev_addr);
1532
1533         return 0;
1534 }
1535
1536 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1537 {
1538         int rc = 0;
1539         struct qeth_cmd_buffer *iob;
1540         struct qeth_ipa_cmd *cmd;
1541
1542         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1543
1544         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1545                                      QETH_PROT_IPV6);
1546         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1547         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1548                         card->info.unique_id;
1549
1550         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1551                                 NULL);
1552         return rc;
1553 }
1554
1555 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1556                 struct qeth_reply *reply, unsigned long data)
1557 {
1558         struct qeth_ipa_cmd *cmd;
1559
1560         cmd = (struct qeth_ipa_cmd *) data;
1561         if (cmd->hdr.return_code == 0)
1562                 card->info.unique_id = *((__u16 *)
1563                                 &cmd->data.create_destroy_addr.unique_id[6]);
1564         else {
1565                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1566                                         UNIQUE_ID_NOT_BY_CARD;
1567                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1568                         "generate a unique ID\n");
1569         }
1570         return 0;
1571 }
1572
1573 static int qeth_l3_get_unique_id(struct qeth_card *card)
1574 {
1575         int rc = 0;
1576         struct qeth_cmd_buffer *iob;
1577         struct qeth_ipa_cmd *cmd;
1578
1579         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1580
1581         if (!qeth_is_supported(card, IPA_IPV6)) {
1582                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1583                                         UNIQUE_ID_NOT_BY_CARD;
1584                 return 0;
1585         }
1586
1587         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1588                                      QETH_PROT_IPV6);
1589         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1590         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1591                         card->info.unique_id;
1592
1593         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1594         return rc;
1595 }
1596
1597 static int
1598 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1599                             unsigned long data)
1600 {
1601         struct qeth_ipa_cmd        *cmd;
1602         __u16 rc;
1603
1604         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1605
1606         cmd = (struct qeth_ipa_cmd *)data;
1607         rc = cmd->hdr.return_code;
1608         if (rc)
1609                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1610         switch (cmd->data.diagass.action) {
1611         case QETH_DIAGS_CMD_TRACE_QUERY:
1612                 break;
1613         case QETH_DIAGS_CMD_TRACE_DISABLE:
1614                 switch (rc) {
1615                 case 0:
1616                 case IPA_RC_INVALID_SUBCMD:
1617                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1618                         dev_info(&card->gdev->dev, "The HiperSockets network "
1619                                 "traffic analyzer is deactivated\n");
1620                         break;
1621                 default:
1622                         break;
1623                 }
1624                 break;
1625         case QETH_DIAGS_CMD_TRACE_ENABLE:
1626                 switch (rc) {
1627                 case 0:
1628                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1629                         dev_info(&card->gdev->dev, "The HiperSockets network "
1630                                 "traffic analyzer is activated\n");
1631                         break;
1632                 case IPA_RC_HARDWARE_AUTH_ERROR:
1633                         dev_warn(&card->gdev->dev, "The device is not "
1634                                 "authorized to run as a HiperSockets network "
1635                                 "traffic analyzer\n");
1636                         break;
1637                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1638                         dev_warn(&card->gdev->dev, "A HiperSockets "
1639                                 "network traffic analyzer is already "
1640                                 "active in the HiperSockets LAN\n");
1641                         break;
1642                 default:
1643                         break;
1644                 }
1645                 break;
1646         default:
1647                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1648                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1649         }
1650
1651         return 0;
1652 }
1653
1654 static int
1655 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1656 {
1657         struct qeth_cmd_buffer *iob;
1658         struct qeth_ipa_cmd    *cmd;
1659
1660         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1661
1662         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1663         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1664         cmd->data.diagass.subcmd_len = 16;
1665         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1666         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1667         cmd->data.diagass.action = diags_cmd;
1668         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1669 }
1670
1671 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1672                                 struct net_device *dev)
1673 {
1674         if (dev->type == ARPHRD_IEEE802_TR)
1675                 ip_tr_mc_map(ipm, mac);
1676         else
1677                 ip_eth_mc_map(ipm, mac);
1678 }
1679
1680 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1681 {
1682         struct qeth_ipaddr *ipm;
1683         struct ip_mc_list *im4;
1684         char buf[MAX_ADDR_LEN];
1685
1686         QETH_CARD_TEXT(card, 4, "addmc");
1687         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1688              im4 = rcu_dereference(im4->next_rcu)) {
1689                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1690                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1691                 if (!ipm)
1692                         continue;
1693                 ipm->u.a4.addr = im4->multiaddr;
1694                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1695                 ipm->is_multicast = 1;
1696                 if (!qeth_l3_add_ip(card, ipm))
1697                         kfree(ipm);
1698         }
1699 }
1700
1701 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1702 {
1703         struct in_device *in_dev;
1704         u16 vid;
1705
1706         QETH_CARD_TEXT(card, 4, "addmcvl");
1707         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1708                 return;
1709
1710         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1711                 struct net_device *netdev;
1712
1713                 rcu_read_lock();
1714                 netdev = __vlan_find_dev_deep(card->dev, vid);
1715                 rcu_read_unlock();
1716                 if (netdev == NULL ||
1717                     !(netdev->flags & IFF_UP))
1718                         continue;
1719                 in_dev = in_dev_get(netdev);
1720                 if (!in_dev)
1721                         continue;
1722                 rcu_read_lock();
1723                 qeth_l3_add_mc(card, in_dev);
1724                 rcu_read_unlock();
1725                 in_dev_put(in_dev);
1726         }
1727 }
1728
1729 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1730 {
1731         struct in_device *in4_dev;
1732
1733         QETH_CARD_TEXT(card, 4, "chkmcv4");
1734         in4_dev = in_dev_get(card->dev);
1735         if (in4_dev == NULL)
1736                 return;
1737         rcu_read_lock();
1738         qeth_l3_add_mc(card, in4_dev);
1739         qeth_l3_add_vlan_mc(card);
1740         rcu_read_unlock();
1741         in_dev_put(in4_dev);
1742 }
1743
1744 #ifdef CONFIG_QETH_IPV6
1745 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1746 {
1747         struct qeth_ipaddr *ipm;
1748         struct ifmcaddr6 *im6;
1749         char buf[MAX_ADDR_LEN];
1750
1751         QETH_CARD_TEXT(card, 4, "addmc6");
1752         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1753                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1754                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1755                 if (!ipm)
1756                         continue;
1757                 ipm->is_multicast = 1;
1758                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1759                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1760                        sizeof(struct in6_addr));
1761                 if (!qeth_l3_add_ip(card, ipm))
1762                         kfree(ipm);
1763         }
1764 }
1765
1766 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1767 {
1768         struct inet6_dev *in_dev;
1769         u16 vid;
1770
1771         QETH_CARD_TEXT(card, 4, "admc6vl");
1772         if (!qeth_is_supported(card, IPA_FULL_VLAN))
1773                 return;
1774
1775         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
1776                 struct net_device *netdev;
1777
1778                 netdev = __vlan_find_dev_deep(card->dev, vid);
1779                 if (netdev == NULL ||
1780                     !(netdev->flags & IFF_UP))
1781                         continue;
1782                 in_dev = in6_dev_get(netdev);
1783                 if (!in_dev)
1784                         continue;
1785                 read_lock_bh(&in_dev->lock);
1786                 qeth_l3_add_mc6(card, in_dev);
1787                 read_unlock_bh(&in_dev->lock);
1788                 in6_dev_put(in_dev);
1789         }
1790 }
1791
1792 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1793 {
1794         struct inet6_dev *in6_dev;
1795
1796         QETH_CARD_TEXT(card, 4, "chkmcv6");
1797         if (!qeth_is_supported(card, IPA_IPV6))
1798                 return ;
1799         in6_dev = in6_dev_get(card->dev);
1800         if (in6_dev == NULL)
1801                 return;
1802         read_lock_bh(&in6_dev->lock);
1803         qeth_l3_add_mc6(card, in6_dev);
1804         qeth_l3_add_vlan_mc6(card);
1805         read_unlock_bh(&in6_dev->lock);
1806         in6_dev_put(in6_dev);
1807 }
1808 #endif /* CONFIG_QETH_IPV6 */
1809
1810 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1811                         unsigned short vid)
1812 {
1813         struct in_device *in_dev;
1814         struct in_ifaddr *ifa;
1815         struct qeth_ipaddr *addr;
1816         struct net_device *netdev;
1817
1818         QETH_CARD_TEXT(card, 4, "frvaddr4");
1819
1820         netdev = __vlan_find_dev_deep(card->dev, vid);
1821         in_dev = in_dev_get(netdev);
1822         if (!in_dev)
1823                 return;
1824         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1825                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1826                 if (addr) {
1827                         addr->u.a4.addr = ifa->ifa_address;
1828                         addr->u.a4.mask = ifa->ifa_mask;
1829                         addr->type = QETH_IP_TYPE_NORMAL;
1830                         if (!qeth_l3_delete_ip(card, addr))
1831                                 kfree(addr);
1832                 }
1833         }
1834         in_dev_put(in_dev);
1835 }
1836
1837 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1838                         unsigned short vid)
1839 {
1840 #ifdef CONFIG_QETH_IPV6
1841         struct inet6_dev *in6_dev;
1842         struct inet6_ifaddr *ifa;
1843         struct qeth_ipaddr *addr;
1844         struct net_device *netdev;
1845
1846         QETH_CARD_TEXT(card, 4, "frvaddr6");
1847
1848         netdev = __vlan_find_dev_deep(card->dev, vid);
1849         in6_dev = in6_dev_get(netdev);
1850         if (!in6_dev)
1851                 return;
1852         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1853                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1854                 if (addr) {
1855                         memcpy(&addr->u.a6.addr, &ifa->addr,
1856                                sizeof(struct in6_addr));
1857                         addr->u.a6.pfxlen = ifa->prefix_len;
1858                         addr->type = QETH_IP_TYPE_NORMAL;
1859                         if (!qeth_l3_delete_ip(card, addr))
1860                                 kfree(addr);
1861                 }
1862         }
1863         in6_dev_put(in6_dev);
1864 #endif /* CONFIG_QETH_IPV6 */
1865 }
1866
1867 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1868                         unsigned short vid)
1869 {
1870         qeth_l3_free_vlan_addresses4(card, vid);
1871         qeth_l3_free_vlan_addresses6(card, vid);
1872 }
1873
1874 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1875 {
1876         struct qeth_card *card = dev->ml_priv;
1877
1878         set_bit(vid, card->active_vlans);
1879         return 0;
1880 }
1881
1882 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1883 {
1884         struct qeth_card *card = dev->ml_priv;
1885         unsigned long flags;
1886
1887         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1888         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1889                 QETH_CARD_TEXT(card, 3, "kidREC");
1890                 return 0;
1891         }
1892         spin_lock_irqsave(&card->vlanlock, flags);
1893         /* unregister IP addresses of vlan device */
1894         qeth_l3_free_vlan_addresses(card, vid);
1895         clear_bit(vid, card->active_vlans);
1896         spin_unlock_irqrestore(&card->vlanlock, flags);
1897         qeth_l3_set_multicast_list(card->dev);
1898         return 0;
1899 }
1900
1901 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1902                         struct sk_buff *skb, struct qeth_hdr *hdr,
1903                         unsigned short *vlan_id)
1904 {
1905         __be16 prot;
1906         struct iphdr *ip_hdr;
1907         unsigned char tg_addr[MAX_ADDR_LEN];
1908         int is_vlan = 0;
1909
1910         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1911                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1912                               ETH_P_IP);
1913                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1914                 case QETH_CAST_MULTICAST:
1915                         switch (prot) {
1916 #ifdef CONFIG_QETH_IPV6
1917                         case __constant_htons(ETH_P_IPV6):
1918                                 ndisc_mc_map((struct in6_addr *)
1919                                      skb->data + 24,
1920                                      tg_addr, card->dev, 0);
1921                                 break;
1922 #endif
1923                         case __constant_htons(ETH_P_IP):
1924                                 ip_hdr = (struct iphdr *)skb->data;
1925                                 (card->dev->type == ARPHRD_IEEE802_TR) ?
1926                                 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1927                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1928                                 break;
1929                         default:
1930                                 memcpy(tg_addr, card->dev->broadcast,
1931                                         card->dev->addr_len);
1932                         }
1933                         card->stats.multicast++;
1934                         skb->pkt_type = PACKET_MULTICAST;
1935                         break;
1936                 case QETH_CAST_BROADCAST:
1937                         memcpy(tg_addr, card->dev->broadcast,
1938                                 card->dev->addr_len);
1939                         card->stats.multicast++;
1940                         skb->pkt_type = PACKET_BROADCAST;
1941                         break;
1942                 case QETH_CAST_UNICAST:
1943                 case QETH_CAST_ANYCAST:
1944                 case QETH_CAST_NOCAST:
1945                 default:
1946                         if (card->options.sniffer)
1947                                 skb->pkt_type = PACKET_OTHERHOST;
1948                         else
1949                                 skb->pkt_type = PACKET_HOST;
1950                         memcpy(tg_addr, card->dev->dev_addr,
1951                                 card->dev->addr_len);
1952                 }
1953                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
1954                         card->dev->header_ops->create(skb, card->dev, prot,
1955                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
1956                                 card->dev->addr_len);
1957                 else
1958                         card->dev->header_ops->create(skb, card->dev, prot,
1959                                 tg_addr, "FAKELL", card->dev->addr_len);
1960         }
1961
1962 #ifdef CONFIG_TR
1963         if (card->dev->type == ARPHRD_IEEE802_TR)
1964                 skb->protocol = tr_type_trans(skb, card->dev);
1965         else
1966 #endif
1967                 skb->protocol = eth_type_trans(skb, card->dev);
1968
1969         if (hdr->hdr.l3.ext_flags &
1970             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
1971                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
1972                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
1973                 is_vlan = 1;
1974         }
1975
1976         if (card->dev->features & NETIF_F_RXCSUM) {
1977                 if ((hdr->hdr.l3.ext_flags &
1978                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1979                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
1980                     (QETH_HDR_EXT_CSUM_HDR_REQ |
1981                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
1982                         skb->ip_summed = CHECKSUM_UNNECESSARY;
1983                 else
1984                         skb->ip_summed = CHECKSUM_NONE;
1985         } else
1986                 skb->ip_summed = CHECKSUM_NONE;
1987
1988         return is_vlan;
1989 }
1990
1991 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
1992                                 int budget, int *done)
1993 {
1994         int work_done = 0;
1995         struct sk_buff *skb;
1996         struct qeth_hdr *hdr;
1997         __u16 vlan_tag = 0;
1998         int is_vlan;
1999         unsigned int len;
2000         __u16 magic;
2001
2002         *done = 0;
2003         BUG_ON(!budget);
2004         while (budget) {
2005                 skb = qeth_core_get_next_skb(card,
2006                         &card->qdio.in_q->bufs[card->rx.b_index],
2007                         &card->rx.b_element, &card->rx.e_offset, &hdr);
2008                 if (!skb) {
2009                         *done = 1;
2010                         break;
2011                 }
2012                 skb->dev = card->dev;
2013                 switch (hdr->hdr.l3.id) {
2014                 case QETH_HEADER_TYPE_LAYER3:
2015                         magic = *(__u16 *)skb->data;
2016                         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2017                             (magic == ETH_P_AF_IUCV)) {
2018                                 skb->protocol = ETH_P_AF_IUCV;
2019                                 skb->pkt_type = PACKET_HOST;
2020                                 skb->mac_header = NET_SKB_PAD;
2021                                 skb->dev = card->dev;
2022                                 len = skb->len;
2023                                 card->dev->header_ops->create(skb, card->dev, 0,
2024                                         card->dev->dev_addr, "FAKELL",
2025                                         card->dev->addr_len);
2026                                 netif_receive_skb(skb);
2027                         } else {
2028                                 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
2029                                                       &vlan_tag);
2030                                 len = skb->len;
2031                                 if (is_vlan && !card->options.sniffer)
2032                                         __vlan_hwaccel_put_tag(skb, vlan_tag);
2033                                 napi_gro_receive(&card->napi, skb);
2034                         }
2035                         break;
2036                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2037                         skb->pkt_type = PACKET_HOST;
2038                         skb->protocol = eth_type_trans(skb, skb->dev);
2039                         len = skb->len;
2040                         netif_receive_skb(skb);
2041                         break;
2042                 default:
2043                         dev_kfree_skb_any(skb);
2044                         QETH_CARD_TEXT(card, 3, "inbunkno");
2045                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2046                         continue;
2047                 }
2048                 work_done++;
2049                 budget--;
2050                 card->stats.rx_packets++;
2051                 card->stats.rx_bytes += len;
2052         }
2053         return work_done;
2054 }
2055
2056 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2057 {
2058         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2059         int work_done = 0;
2060         struct qeth_qdio_buffer *buffer;
2061         int done;
2062         int new_budget = budget;
2063
2064         if (card->options.performance_stats) {
2065                 card->perf_stats.inbound_cnt++;
2066                 card->perf_stats.inbound_start_time = qeth_get_micros();
2067         }
2068
2069         while (1) {
2070                 if (!card->rx.b_count) {
2071                         card->rx.qdio_err = 0;
2072                         card->rx.b_count = qdio_get_next_buffers(
2073                                 card->data.ccwdev, 0, &card->rx.b_index,
2074                                 &card->rx.qdio_err);
2075                         if (card->rx.b_count <= 0) {
2076                                 card->rx.b_count = 0;
2077                                 break;
2078                         }
2079                         card->rx.b_element =
2080                                 &card->qdio.in_q->bufs[card->rx.b_index]
2081                                 .buffer->element[0];
2082                         card->rx.e_offset = 0;
2083                 }
2084
2085                 while (card->rx.b_count) {
2086                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2087                         if (!(card->rx.qdio_err &&
2088                             qeth_check_qdio_errors(card, buffer->buffer,
2089                             card->rx.qdio_err, "qinerr")))
2090                                 work_done += qeth_l3_process_inbound_buffer(
2091                                         card, new_budget, &done);
2092                         else
2093                                 done = 1;
2094
2095                         if (done) {
2096                                 if (card->options.performance_stats)
2097                                         card->perf_stats.bufs_rec++;
2098                                 qeth_put_buffer_pool_entry(card,
2099                                         buffer->pool_entry);
2100                                 qeth_queue_input_buffer(card, card->rx.b_index);
2101                                 card->rx.b_count--;
2102                                 if (card->rx.b_count) {
2103                                         card->rx.b_index =
2104                                                 (card->rx.b_index + 1) %
2105                                                 QDIO_MAX_BUFFERS_PER_Q;
2106                                         card->rx.b_element =
2107                                                 &card->qdio.in_q
2108                                                 ->bufs[card->rx.b_index]
2109                                                 .buffer->element[0];
2110                                         card->rx.e_offset = 0;
2111                                 }
2112                         }
2113
2114                         if (work_done >= budget)
2115                                 goto out;
2116                         else
2117                                 new_budget = budget - work_done;
2118                 }
2119         }
2120
2121         napi_complete(napi);
2122         if (qdio_start_irq(card->data.ccwdev, 0))
2123                 napi_schedule(&card->napi);
2124 out:
2125         if (card->options.performance_stats)
2126                 card->perf_stats.inbound_time += qeth_get_micros() -
2127                         card->perf_stats.inbound_start_time;
2128         return work_done;
2129 }
2130
2131 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2132                         struct qeth_card *card)
2133 {
2134         int rc = 0;
2135         u16 vid;
2136
2137         for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) {
2138                 struct net_device *netdev;
2139
2140                 rcu_read_lock();
2141                 netdev = __vlan_find_dev_deep(dev, vid);
2142                 rcu_read_unlock();
2143                 if (netdev == dev) {
2144                         rc = QETH_VLAN_CARD;
2145                         break;
2146                 }
2147         }
2148
2149         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2150                 return 0;
2151
2152         return rc;
2153 }
2154
2155 static int qeth_l3_verify_dev(struct net_device *dev)
2156 {
2157         struct qeth_card *card;
2158         unsigned long flags;
2159         int rc = 0;
2160
2161         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2162         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2163                 if (card->dev == dev) {
2164                         rc = QETH_REAL_CARD;
2165                         break;
2166                 }
2167                 rc = qeth_l3_verify_vlan_dev(dev, card);
2168                 if (rc)
2169                         break;
2170         }
2171         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2172
2173         return rc;
2174 }
2175
2176 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2177 {
2178         struct qeth_card *card = NULL;
2179         int rc;
2180
2181         rc = qeth_l3_verify_dev(dev);
2182         if (rc == QETH_REAL_CARD)
2183                 card = dev->ml_priv;
2184         else if (rc == QETH_VLAN_CARD)
2185                 card = vlan_dev_real_dev(dev)->ml_priv;
2186         if (card && card->options.layer2)
2187                 card = NULL;
2188         if (card)
2189                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2190         return card ;
2191 }
2192
2193 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2194 {
2195         int rc = 0;
2196
2197         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2198         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2199
2200         qeth_set_allowed_threads(card, 0, 1);
2201         if (card->options.sniffer &&
2202             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2203                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2204         if (card->read.state == CH_STATE_UP &&
2205             card->write.state == CH_STATE_UP &&
2206             (card->state == CARD_STATE_UP)) {
2207                 if (recovery_mode)
2208                         qeth_l3_stop(card->dev);
2209                 else {
2210                         rtnl_lock();
2211                         dev_close(card->dev);
2212                         rtnl_unlock();
2213                 }
2214                 card->state = CARD_STATE_SOFTSETUP;
2215         }
2216         if (card->state == CARD_STATE_SOFTSETUP) {
2217                 qeth_l3_clear_ip_list(card, 1);
2218                 qeth_clear_ipacmd_list(card);
2219                 card->state = CARD_STATE_HARDSETUP;
2220         }
2221         if (card->state == CARD_STATE_HARDSETUP) {
2222                 qeth_qdio_clear_card(card, 0);
2223                 qeth_clear_qdio_buffers(card);
2224                 qeth_clear_working_pool_list(card);
2225                 card->state = CARD_STATE_DOWN;
2226         }
2227         if (card->state == CARD_STATE_DOWN) {
2228                 qeth_clear_cmd_buffers(&card->read);
2229                 qeth_clear_cmd_buffers(&card->write);
2230         }
2231         return rc;
2232 }
2233
2234 /*
2235  * test for and Switch promiscuous mode (on or off)
2236  *  either for guestlan or HiperSocket Sniffer
2237  */
2238 static void
2239 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2240 {
2241         struct net_device *dev = card->dev;
2242
2243         if (((dev->flags & IFF_PROMISC) &&
2244              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2245             (!(dev->flags & IFF_PROMISC) &&
2246              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2247                 return;
2248
2249         if (card->info.guestlan) {              /* Guestlan trace */
2250                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2251                         qeth_setadp_promisc_mode(card);
2252         } else if (card->options.sniffer &&     /* HiperSockets trace */
2253                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2254                 if (dev->flags & IFF_PROMISC) {
2255                         QETH_CARD_TEXT(card, 3, "+promisc");
2256                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2257                 } else {
2258                         QETH_CARD_TEXT(card, 3, "-promisc");
2259                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2260                 }
2261         }
2262 }
2263
2264 static void qeth_l3_set_multicast_list(struct net_device *dev)
2265 {
2266         struct qeth_card *card = dev->ml_priv;
2267
2268         QETH_CARD_TEXT(card, 3, "setmulti");
2269         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2270             (card->state != CARD_STATE_UP))
2271                 return;
2272         if (!card->options.sniffer) {
2273                 qeth_l3_delete_mc_addresses(card);
2274                 qeth_l3_add_multicast_ipv4(card);
2275 #ifdef CONFIG_QETH_IPV6
2276                 qeth_l3_add_multicast_ipv6(card);
2277 #endif
2278                 qeth_l3_set_ip_addr_list(card);
2279                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2280                         return;
2281         }
2282         qeth_l3_handle_promisc_mode(card);
2283 }
2284
2285 static const char *qeth_l3_arp_get_error_cause(int *rc)
2286 {
2287         switch (*rc) {
2288         case QETH_IPA_ARP_RC_FAILED:
2289                 *rc = -EIO;
2290                 return "operation failed";
2291         case QETH_IPA_ARP_RC_NOTSUPP:
2292                 *rc = -EOPNOTSUPP;
2293                 return "operation not supported";
2294         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2295                 *rc = -EINVAL;
2296                 return "argument out of range";
2297         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2298                 *rc = -EOPNOTSUPP;
2299                 return "query operation not supported";
2300         case QETH_IPA_ARP_RC_Q_NO_DATA:
2301                 *rc = -ENOENT;
2302                 return "no query data available";
2303         default:
2304                 return "unknown error";
2305         }
2306 }
2307
2308 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2309 {
2310         int tmp;
2311         int rc;
2312
2313         QETH_CARD_TEXT(card, 3, "arpstnoe");
2314
2315         /*
2316          * currently GuestLAN only supports the ARP assist function
2317          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2318          * thus we say EOPNOTSUPP for this ARP function
2319          */
2320         if (card->info.guestlan)
2321                 return -EOPNOTSUPP;
2322         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2323                 return -EOPNOTSUPP;
2324         }
2325         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2326                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2327                                           no_entries);
2328         if (rc) {
2329                 tmp = rc;
2330                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2331                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2332                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2333         }
2334         return rc;
2335 }
2336
2337 static __u32 get_arp_entry_size(struct qeth_card *card,
2338                         struct qeth_arp_query_data *qdata,
2339                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2340 {
2341         __u32 rc;
2342         __u8 is_hsi;
2343
2344         is_hsi = qdata->reply_bits == 5;
2345         if (type->ip == QETHARP_IP_ADDR_V4) {
2346                 QETH_CARD_TEXT(card, 4, "arpev4");
2347                 if (strip_entries) {
2348                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2349                                 sizeof(struct qeth_arp_qi_entry7_short);
2350                 } else {
2351                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2352                                 sizeof(struct qeth_arp_qi_entry7);
2353                 }
2354         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2355                 QETH_CARD_TEXT(card, 4, "arpev6");
2356                 if (strip_entries) {
2357                         rc = is_hsi ?
2358                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2359                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2360                 } else {
2361                         rc = is_hsi ?
2362                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2363                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2364                 }
2365         } else {
2366                 QETH_CARD_TEXT(card, 4, "arpinv");
2367                 rc = 0;
2368         }
2369
2370         return rc;
2371 }
2372
2373 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2374 {
2375         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2376                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2377 }
2378
2379 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2380                 struct qeth_reply *reply, unsigned long data)
2381 {
2382         struct qeth_ipa_cmd *cmd;
2383         struct qeth_arp_query_data *qdata;
2384         struct qeth_arp_query_info *qinfo;
2385         int i;
2386         int e;
2387         int entrybytes_done;
2388         int stripped_bytes;
2389         __u8 do_strip_entries;
2390
2391         QETH_CARD_TEXT(card, 3, "arpquecb");
2392
2393         qinfo = (struct qeth_arp_query_info *) reply->param;
2394         cmd = (struct qeth_ipa_cmd *) data;
2395         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2396         if (cmd->hdr.return_code) {
2397                 QETH_CARD_TEXT(card, 4, "arpcberr");
2398                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2399                 return 0;
2400         }
2401         if (cmd->data.setassparms.hdr.return_code) {
2402                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2403                 QETH_CARD_TEXT(card, 4, "setaperr");
2404                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2405                 return 0;
2406         }
2407         qdata = &cmd->data.setassparms.data.query_arp;
2408         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2409
2410         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2411         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2412         entrybytes_done = 0;
2413         for (e = 0; e < qdata->no_entries; ++e) {
2414                 char *cur_entry;
2415                 __u32 esize;
2416                 struct qeth_arp_entrytype *etype;
2417
2418                 cur_entry = &qdata->data + entrybytes_done;
2419                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2420                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2421                         QETH_CARD_TEXT(card, 4, "pmis");
2422                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2423                         break;
2424                 }
2425                 esize = get_arp_entry_size(card, qdata, etype,
2426                         do_strip_entries);
2427                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2428                 if (!esize)
2429                         break;
2430
2431                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2432                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2433                         cmd->hdr.return_code = -ENOMEM;
2434                         goto out_error;
2435                 }
2436
2437                 memcpy(qinfo->udata + qinfo->udata_offset,
2438                         &qdata->data + entrybytes_done + stripped_bytes,
2439                         esize);
2440                 entrybytes_done += esize + stripped_bytes;
2441                 qinfo->udata_offset += esize;
2442                 ++qinfo->no_entries;
2443         }
2444         /* check if all replies received ... */
2445         if (cmd->data.setassparms.hdr.seq_no <
2446             cmd->data.setassparms.hdr.number_of_replies)
2447                 return 1;
2448         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2449         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2450         /* keep STRIP_ENTRIES flag so the user program can distinguish
2451          * stripped entries from normal ones */
2452         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2453                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2454         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2455         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2456         return 0;
2457 out_error:
2458         i = 0;
2459         memcpy(qinfo->udata, &i, 4);
2460         return 0;
2461 }
2462
2463 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2464                 struct qeth_cmd_buffer *iob, int len,
2465                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2466                         unsigned long),
2467                 void *reply_param)
2468 {
2469         QETH_CARD_TEXT(card, 4, "sendarp");
2470
2471         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2472         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2473                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2474         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2475                                       reply_cb, reply_param);
2476 }
2477
2478 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2479         enum qeth_prot_versions prot,
2480         struct qeth_arp_query_info *qinfo)
2481 {
2482         struct qeth_cmd_buffer *iob;
2483         struct qeth_ipa_cmd *cmd;
2484         int tmp;
2485         int rc;
2486
2487         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2488
2489         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2490                         IPA_CMD_ASS_ARP_QUERY_INFO,
2491                         sizeof(struct qeth_arp_query_data) - sizeof(char),
2492                         prot);
2493         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2494         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2495         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2496         cmd->data.setassparms.data.query_arp.no_entries = 0;
2497         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2498                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2499                            qeth_l3_arp_query_cb, (void *)qinfo);
2500         if (rc) {
2501                 tmp = rc;
2502                 QETH_DBF_MESSAGE(2,
2503                         "Error while querying ARP cache on %s: %s "
2504                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2505                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2506         }
2507
2508         return rc;
2509 }
2510
2511 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2512 {
2513         struct qeth_arp_query_info qinfo = {0, };
2514         int rc;
2515
2516         QETH_CARD_TEXT(card, 3, "arpquery");
2517
2518         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2519                                IPA_ARP_PROCESSING)) {
2520                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2521                 rc = -EOPNOTSUPP;
2522                 goto out;
2523         }
2524         /* get size of userspace buffer and mask_bits -> 6 bytes */
2525         if (copy_from_user(&qinfo, udata, 6)) {
2526                 rc = -EFAULT;
2527                 goto out;
2528         }
2529         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2530         if (!qinfo.udata) {
2531                 rc = -ENOMEM;
2532                 goto out;
2533         }
2534         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2535         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2536         if (rc) {
2537                 if (copy_to_user(udata, qinfo.udata, 4))
2538                         rc = -EFAULT;
2539                         goto free_and_out;
2540         } else {
2541 #ifdef CONFIG_QETH_IPV6
2542                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2543                         /* fails in case of GuestLAN QDIO mode */
2544                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2545                                 &qinfo);
2546                 }
2547 #endif
2548                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2549                         QETH_CARD_TEXT(card, 4, "qactf");
2550                         rc = -EFAULT;
2551                         goto free_and_out;
2552                 }
2553                 QETH_CARD_TEXT_(card, 4, "qacts");
2554         }
2555 free_and_out:
2556         kfree(qinfo.udata);
2557 out:
2558         return rc;
2559 }
2560
2561 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2562                                 struct qeth_arp_cache_entry *entry)
2563 {
2564         struct qeth_cmd_buffer *iob;
2565         char buf[16];
2566         int tmp;
2567         int rc;
2568
2569         QETH_CARD_TEXT(card, 3, "arpadent");
2570
2571         /*
2572          * currently GuestLAN only supports the ARP assist function
2573          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2574          * thus we say EOPNOTSUPP for this ARP function
2575          */
2576         if (card->info.guestlan)
2577                 return -EOPNOTSUPP;
2578         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2579                 return -EOPNOTSUPP;
2580         }
2581
2582         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2583                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2584                                        sizeof(struct qeth_arp_cache_entry),
2585                                        QETH_PROT_IPV4);
2586         rc = qeth_l3_send_setassparms(card, iob,
2587                                    sizeof(struct qeth_arp_cache_entry),
2588                                    (unsigned long) entry,
2589                                    qeth_l3_default_setassparms_cb, NULL);
2590         if (rc) {
2591                 tmp = rc;
2592                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2593                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2594                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2595                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2596         }
2597         return rc;
2598 }
2599
2600 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2601                                 struct qeth_arp_cache_entry *entry)
2602 {
2603         struct qeth_cmd_buffer *iob;
2604         char buf[16] = {0, };
2605         int tmp;
2606         int rc;
2607
2608         QETH_CARD_TEXT(card, 3, "arprment");
2609
2610         /*
2611          * currently GuestLAN only supports the ARP assist function
2612          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2613          * thus we say EOPNOTSUPP for this ARP function
2614          */
2615         if (card->info.guestlan)
2616                 return -EOPNOTSUPP;
2617         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2618                 return -EOPNOTSUPP;
2619         }
2620         memcpy(buf, entry, 12);
2621         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2622                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2623                                        12,
2624                                        QETH_PROT_IPV4);
2625         rc = qeth_l3_send_setassparms(card, iob,
2626                                    12, (unsigned long)buf,
2627                                    qeth_l3_default_setassparms_cb, NULL);
2628         if (rc) {
2629                 tmp = rc;
2630                 memset(buf, 0, 16);
2631                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2632                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2633                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2634                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2635         }
2636         return rc;
2637 }
2638
2639 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2640 {
2641         int rc;
2642         int tmp;
2643
2644         QETH_CARD_TEXT(card, 3, "arpflush");
2645
2646         /*
2647          * currently GuestLAN only supports the ARP assist function
2648          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2649          * thus we say EOPNOTSUPP for this ARP function
2650         */
2651         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2652                 return -EOPNOTSUPP;
2653         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2654                 return -EOPNOTSUPP;
2655         }
2656         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2657                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2658         if (rc) {
2659                 tmp = rc;
2660                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2661                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2662                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2663         }
2664         return rc;
2665 }
2666
2667 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2668 {
2669         struct qeth_card *card = dev->ml_priv;
2670         struct qeth_arp_cache_entry arp_entry;
2671         struct mii_ioctl_data *mii_data;
2672         int rc = 0;
2673
2674         if (!card)
2675                 return -ENODEV;
2676
2677         if ((card->state != CARD_STATE_UP) &&
2678                 (card->state != CARD_STATE_SOFTSETUP))
2679                 return -ENODEV;
2680
2681         switch (cmd) {
2682         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2683                 if (!capable(CAP_NET_ADMIN)) {
2684                         rc = -EPERM;
2685                         break;
2686                 }
2687                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2688                 break;
2689         case SIOC_QETH_ARP_QUERY_INFO:
2690                 if (!capable(CAP_NET_ADMIN)) {
2691                         rc = -EPERM;
2692                         break;
2693                 }
2694                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2695                 break;
2696         case SIOC_QETH_ARP_ADD_ENTRY:
2697                 if (!capable(CAP_NET_ADMIN)) {
2698                         rc = -EPERM;
2699                         break;
2700                 }
2701                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2702                                    sizeof(struct qeth_arp_cache_entry)))
2703                         rc = -EFAULT;
2704                 else
2705                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2706                 break;
2707         case SIOC_QETH_ARP_REMOVE_ENTRY:
2708                 if (!capable(CAP_NET_ADMIN)) {
2709                         rc = -EPERM;
2710                         break;
2711                 }
2712                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2713                                    sizeof(struct qeth_arp_cache_entry)))
2714                         rc = -EFAULT;
2715                 else
2716                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2717                 break;
2718         case SIOC_QETH_ARP_FLUSH_CACHE:
2719                 if (!capable(CAP_NET_ADMIN)) {
2720                         rc = -EPERM;
2721                         break;
2722                 }
2723                 rc = qeth_l3_arp_flush_cache(card);
2724                 break;
2725         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2726                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2727                 break;
2728         case SIOC_QETH_GET_CARD_TYPE:
2729                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2730                      card->info.type == QETH_CARD_TYPE_OSX) &&
2731                     !card->info.guestlan)
2732                         return 1;
2733                 return 0;
2734                 break;
2735         case SIOCGMIIPHY:
2736                 mii_data = if_mii(rq);
2737                 mii_data->phy_id = 0;
2738                 break;
2739         case SIOCGMIIREG:
2740                 mii_data = if_mii(rq);
2741                 if (mii_data->phy_id != 0)
2742                         rc = -EINVAL;
2743                 else
2744                         mii_data->val_out = qeth_mdio_read(dev,
2745                                                         mii_data->phy_id,
2746                                                         mii_data->reg_num);
2747                 break;
2748         case SIOC_QETH_QUERY_OAT:
2749                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
2750                 break;
2751         default:
2752                 rc = -EOPNOTSUPP;
2753         }
2754         if (rc)
2755                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2756         return rc;
2757 }
2758
2759 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2760 {
2761         int cast_type = RTN_UNSPEC;
2762         struct neighbour *n = NULL;
2763         struct dst_entry *dst;
2764
2765         rcu_read_lock();
2766         dst = skb_dst(skb);
2767         if (dst)
2768                 n = dst_get_neighbour_noref(dst);
2769         if (n) {
2770                 cast_type = n->type;
2771                 rcu_read_unlock();
2772                 if ((cast_type == RTN_BROADCAST) ||
2773                     (cast_type == RTN_MULTICAST) ||
2774                     (cast_type == RTN_ANYCAST))
2775                         return cast_type;
2776                 else
2777                         return RTN_UNSPEC;
2778         }
2779         rcu_read_unlock();
2780
2781         /* try something else */
2782         if (skb->protocol == ETH_P_IPV6)
2783                 return (skb_network_header(skb)[24] == 0xff) ?
2784                                 RTN_MULTICAST : 0;
2785         else if (skb->protocol == ETH_P_IP)
2786                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2787                                 RTN_MULTICAST : 0;
2788         /* ... */
2789         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2790                 return RTN_BROADCAST;
2791         else {
2792                 u16 hdr_mac;
2793
2794                 hdr_mac = *((u16 *)skb->data);
2795                 /* tr multicast? */
2796                 switch (card->info.link_type) {
2797                 case QETH_LINK_TYPE_HSTR:
2798                 case QETH_LINK_TYPE_LANE_TR:
2799                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2800                             (hdr_mac == QETH_TR_MAC_C))
2801                                 return RTN_MULTICAST;
2802                         break;
2803                 /* eth or so multicast? */
2804                 default:
2805                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2806                             (hdr_mac == QETH_ETH_MAC_V6))
2807                                 return RTN_MULTICAST;
2808                 }
2809         }
2810         return cast_type;
2811 }
2812
2813 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card,
2814                 struct qeth_hdr *hdr, struct sk_buff *skb)
2815 {
2816         char daddr[16];
2817         struct af_iucv_trans_hdr *iucv_hdr;
2818
2819         skb_pull(skb, 14);
2820         card->dev->header_ops->create(skb, card->dev, 0,
2821                                       card->dev->dev_addr, card->dev->dev_addr,
2822                                       card->dev->addr_len);
2823         skb_pull(skb, 14);
2824         iucv_hdr = (struct af_iucv_trans_hdr *)skb->data;
2825         memset(hdr, 0, sizeof(struct qeth_hdr));
2826         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2827         hdr->hdr.l3.ext_flags = 0;
2828         hdr->hdr.l3.length = skb->len;
2829         hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST;
2830         memset(daddr, 0, sizeof(daddr));
2831         daddr[0] = 0xfe;
2832         daddr[1] = 0x80;
2833         memcpy(&daddr[8], iucv_hdr->destUserID, 8);
2834         memcpy(hdr->hdr.l3.dest_addr, daddr, 16);
2835 }
2836
2837 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2838                 struct sk_buff *skb, int ipv, int cast_type)
2839 {
2840         struct dst_entry *dst;
2841
2842         memset(hdr, 0, sizeof(struct qeth_hdr));
2843         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2844         hdr->hdr.l3.ext_flags = 0;
2845
2846         /*
2847          * before we're going to overwrite this location with next hop ip.
2848          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2849          */
2850         if (vlan_tx_tag_present(skb)) {
2851                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2852                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2853                 else
2854                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2855                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2856         }
2857
2858         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2859
2860         rcu_read_lock();
2861         dst = skb_dst(skb);
2862         if (ipv == 4) {
2863                 struct rtable *rt = (struct rtable *) dst;
2864                 __be32 *pkey = &ip_hdr(skb)->daddr;
2865
2866                 if (rt->rt_gateway)
2867                         pkey = &rt->rt_gateway;
2868
2869                 /* IPv4 */
2870                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2871                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2872                 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey;
2873         } else if (ipv == 6) {
2874                 struct rt6_info *rt = (struct rt6_info *) dst;
2875                 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr;
2876
2877                 if (!ipv6_addr_any(&rt->rt6i_gateway))
2878                         pkey = &rt->rt6i_gateway;
2879
2880                 /* IPv6 */
2881                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2882                 if (card->info.type == QETH_CARD_TYPE_IQD)
2883                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2884                 memcpy(hdr->hdr.l3.dest_addr, pkey, 16);
2885         } else {
2886                 /* passthrough */
2887                 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2888                         !memcmp(skb->data + sizeof(struct qeth_hdr) +
2889                         sizeof(__u16), skb->dev->broadcast, 6)) {
2890                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2891                                                 QETH_HDR_PASSTHRU;
2892                 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2893                             skb->dev->broadcast, 6)) {
2894                         /* broadcast? */
2895                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2896                                                 QETH_HDR_PASSTHRU;
2897                 } else {
2898                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2899                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2900                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2901                 }
2902         }
2903         rcu_read_unlock();
2904 }
2905
2906 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2907                 struct qeth_hdr *hdr, struct sk_buff *skb)
2908 {
2909         struct iphdr *iph = ip_hdr(skb);
2910
2911         /* tcph->check contains already the pseudo hdr checksum
2912          * so just set the header flags
2913          */
2914         if (iph->protocol == IPPROTO_UDP)
2915                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2916         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2917                 QETH_HDR_EXT_CSUM_HDR_REQ;
2918         iph->check = 0;
2919         if (card->options.performance_stats)
2920                 card->perf_stats.tx_csum++;
2921 }
2922
2923 static void qeth_tso_fill_header(struct qeth_card *card,
2924                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2925 {
2926         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2927         struct tcphdr *tcph = tcp_hdr(skb);
2928         struct iphdr *iph = ip_hdr(skb);
2929         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2930
2931         /*fix header to TSO values ...*/
2932         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2933         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2934         /*set values which are fix for the first approach ...*/
2935         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2936         hdr->ext.imb_hdr_no  = 1;
2937         hdr->ext.hdr_type    = 1;
2938         hdr->ext.hdr_version = 1;
2939         hdr->ext.hdr_len     = 28;
2940         /*insert non-fix values */
2941         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2942         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2943         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2944                                        sizeof(struct qeth_hdr_tso));
2945         tcph->check = 0;
2946         if (skb->protocol == ETH_P_IPV6) {
2947                 ip6h->payload_len = 0;
2948                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2949                                                0, IPPROTO_TCP, 0);
2950         } else {
2951                 /*OSA want us to set these values ...*/
2952                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2953                                          0, IPPROTO_TCP, 0);
2954                 iph->tot_len = 0;
2955                 iph->check = 0;
2956         }
2957 }
2958
2959 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2960 {
2961         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2962                 tcp_hdr(skb)->doff * 4;
2963         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2964         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2965         elements += skb_shinfo(skb)->nr_frags;
2966         return elements;
2967 }
2968
2969 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2970 {
2971         int rc;
2972         u16 *tag;
2973         struct qeth_hdr *hdr = NULL;
2974         int elements_needed = 0;
2975         int elems;
2976         struct qeth_card *card = dev->ml_priv;
2977         struct sk_buff *new_skb = NULL;
2978         int ipv = qeth_get_ip_version(skb);
2979         int cast_type = qeth_l3_get_cast_type(card, skb);
2980         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2981                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2982         int tx_bytes = skb->len;
2983         bool large_send;
2984         int data_offset = -1;
2985         int nr_frags;
2986
2987         if (((card->info.type == QETH_CARD_TYPE_IQD) &&
2988              (((card->options.cq != QETH_CQ_ENABLED) && !ipv) ||
2989               ((card->options.cq == QETH_CQ_ENABLED) &&
2990                (skb->protocol != ETH_P_AF_IUCV)))) ||
2991             card->options.sniffer)
2992                         goto tx_drop;
2993
2994         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2995                 card->stats.tx_carrier_errors++;
2996                 goto tx_drop;
2997         }
2998
2999         if ((cast_type == RTN_BROADCAST) &&
3000             (card->info.broadcast_capable == 0))
3001                 goto tx_drop;
3002
3003         if (card->options.performance_stats) {
3004                 card->perf_stats.outbound_cnt++;
3005                 card->perf_stats.outbound_start_time = qeth_get_micros();
3006         }
3007
3008         large_send = skb_is_gso(skb);
3009
3010         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
3011             (skb_shinfo(skb)->nr_frags == 0)) {
3012                 new_skb = skb;
3013                 if (new_skb->protocol == ETH_P_AF_IUCV)
3014                         data_offset = 0;
3015                 else
3016                         data_offset = ETH_HLEN;
3017                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3018                 if (!hdr)
3019                         goto tx_drop;
3020                 elements_needed++;
3021         } else {
3022                 /* create a clone with writeable headroom */
3023                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
3024                                         + VLAN_HLEN);
3025                 if (!new_skb)
3026                         goto tx_drop;
3027         }
3028
3029         if (card->info.type == QETH_CARD_TYPE_IQD) {
3030                 if (data_offset < 0)
3031                         skb_pull(new_skb, ETH_HLEN);
3032         } else {
3033                 if (ipv == 4) {
3034                         if (card->dev->type == ARPHRD_IEEE802_TR)
3035                                 skb_pull(new_skb, TR_HLEN);
3036                         else
3037                                 skb_pull(new_skb, ETH_HLEN);
3038                 }
3039
3040                 if (ipv != 4 && vlan_tx_tag_present(new_skb)) {
3041                         skb_push(new_skb, VLAN_HLEN);
3042                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
3043                         skb_copy_to_linear_data_offset(new_skb, 4,
3044                                 new_skb->data + 8, 4);
3045                         skb_copy_to_linear_data_offset(new_skb, 8,
3046                                 new_skb->data + 12, 4);
3047                         tag = (u16 *)(new_skb->data + 12);
3048                         *tag = __constant_htons(ETH_P_8021Q);
3049                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
3050                 }
3051         }
3052
3053         netif_stop_queue(dev);
3054
3055         /* fix hardware limitation: as long as we do not have sbal
3056          * chaining we can not send long frag lists
3057          */
3058         if (large_send) {
3059                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3060                         if (skb_linearize(new_skb))
3061                                 goto tx_drop;
3062                         if (card->options.performance_stats)
3063                                 card->perf_stats.tx_lin++;
3064                 }
3065         }
3066
3067         if (large_send && (cast_type == RTN_UNSPEC)) {
3068                 hdr = (struct qeth_hdr *)skb_push(new_skb,
3069                                                 sizeof(struct qeth_hdr_tso));
3070                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3071                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3072                 qeth_tso_fill_header(card, hdr, new_skb);
3073                 elements_needed++;
3074         } else {
3075                 if (data_offset < 0) {
3076                         hdr = (struct qeth_hdr *)skb_push(new_skb,
3077                                                 sizeof(struct qeth_hdr));
3078                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3079                                                 cast_type);
3080                 } else {
3081                         if (new_skb->protocol == ETH_P_AF_IUCV)
3082                                 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb);
3083                         else {
3084                                 qeth_l3_fill_header(card, hdr, new_skb, ipv,
3085                                                         cast_type);
3086                                 hdr->hdr.l3.length = new_skb->len - data_offset;
3087                         }
3088                 }
3089
3090                 if (skb->ip_summed == CHECKSUM_PARTIAL)
3091                         qeth_l3_hdr_csum(card, hdr, new_skb);
3092         }
3093
3094         elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3095                                                  elements_needed);
3096         if (!elems) {
3097                 if (data_offset >= 0)
3098                         kmem_cache_free(qeth_core_header_cache, hdr);
3099                 goto tx_drop;
3100         }
3101         elements_needed += elems;
3102         nr_frags = skb_shinfo(new_skb)->nr_frags;
3103
3104         if (card->info.type != QETH_CARD_TYPE_IQD) {
3105                 int len;
3106                 if (large_send)
3107                         len = ((unsigned long)tcp_hdr(new_skb) +
3108                                 tcp_hdr(new_skb)->doff * 4) -
3109                                 (unsigned long)new_skb->data;
3110                 else
3111                         len = sizeof(struct qeth_hdr_layer3);
3112
3113                 if (qeth_hdr_chk_and_bounce(new_skb, len))
3114                         goto tx_drop;
3115                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3116                                          elements_needed);
3117         } else
3118                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3119                                         elements_needed, data_offset, 0);
3120
3121         if (!rc) {
3122                 card->stats.tx_packets++;
3123                 card->stats.tx_bytes += tx_bytes;
3124                 if (new_skb != skb)
3125                         dev_kfree_skb_any(skb);
3126                 if (card->options.performance_stats) {
3127                         if (large_send) {
3128                                 card->perf_stats.large_send_bytes += tx_bytes;
3129                                 card->perf_stats.large_send_cnt++;
3130                         }
3131                         if (nr_frags) {
3132                                 card->perf_stats.sg_skbs_sent++;
3133                                 /* nr_frags + skb->data */
3134                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3135                         }
3136                 }
3137                 rc = NETDEV_TX_OK;
3138         } else {
3139                 if (data_offset >= 0)
3140                         kmem_cache_free(qeth_core_header_cache, hdr);
3141
3142                 if (rc == -EBUSY) {
3143                         if (new_skb != skb)
3144                                 dev_kfree_skb_any(new_skb);
3145                         return NETDEV_TX_BUSY;
3146                 } else
3147                         goto tx_drop;
3148         }
3149
3150         netif_wake_queue(dev);
3151         if (card->options.performance_stats)
3152                 card->perf_stats.outbound_time += qeth_get_micros() -
3153                         card->perf_stats.outbound_start_time;
3154         return rc;
3155
3156 tx_drop:
3157         card->stats.tx_dropped++;
3158         card->stats.tx_errors++;
3159         if ((new_skb != skb) && new_skb)
3160                 dev_kfree_skb_any(new_skb);
3161         dev_kfree_skb_any(skb);
3162         netif_wake_queue(dev);
3163         return NETDEV_TX_OK;
3164 }
3165
3166 static int __qeth_l3_open(struct net_device *dev)
3167 {
3168         struct qeth_card *card = dev->ml_priv;
3169         int rc = 0;
3170
3171         QETH_CARD_TEXT(card, 4, "qethopen");
3172         if (card->state == CARD_STATE_UP)
3173                 return rc;
3174         if (card->state != CARD_STATE_SOFTSETUP)
3175                 return -ENODEV;
3176         card->data.state = CH_STATE_UP;
3177         card->state = CARD_STATE_UP;
3178         netif_start_queue(dev);
3179
3180         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3181                 napi_enable(&card->napi);
3182                 napi_schedule(&card->napi);
3183         } else
3184                 rc = -EIO;
3185         return rc;
3186 }
3187
3188 static int qeth_l3_open(struct net_device *dev)
3189 {
3190         struct qeth_card *card = dev->ml_priv;
3191
3192         QETH_CARD_TEXT(card, 5, "qethope_");
3193         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3194                 QETH_CARD_TEXT(card, 3, "openREC");
3195                 return -ERESTARTSYS;
3196         }
3197         return __qeth_l3_open(dev);
3198 }
3199
3200 static int qeth_l3_stop(struct net_device *dev)
3201 {
3202         struct qeth_card *card = dev->ml_priv;
3203
3204         QETH_CARD_TEXT(card, 4, "qethstop");
3205         netif_tx_disable(dev);
3206         if (card->state == CARD_STATE_UP) {
3207                 card->state = CARD_STATE_SOFTSETUP;
3208                 napi_disable(&card->napi);
3209         }
3210         return 0;
3211 }
3212
3213 static netdev_features_t qeth_l3_fix_features(struct net_device *dev,
3214         netdev_features_t features)
3215 {
3216         struct qeth_card *card = dev->ml_priv;
3217
3218         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3219                 features &= ~NETIF_F_IP_CSUM;
3220         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3221                 features &= ~NETIF_F_TSO;
3222         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3223                 features &= ~NETIF_F_RXCSUM;
3224
3225         return features;
3226 }
3227
3228 static int qeth_l3_set_features(struct net_device *dev,
3229         netdev_features_t features)
3230 {
3231         struct qeth_card *card = dev->ml_priv;
3232         u32 changed = dev->features ^ features;
3233         int err;
3234
3235         if (!(changed & NETIF_F_RXCSUM))
3236                 return 0;
3237
3238         if (card->state == CARD_STATE_DOWN ||
3239             card->state == CARD_STATE_RECOVER)
3240                 return 0;
3241
3242         err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM);
3243         if (err)
3244                 dev->features = features ^ NETIF_F_RXCSUM;
3245
3246         return err;
3247 }
3248
3249 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3250         .get_link = ethtool_op_get_link,
3251         .get_strings = qeth_core_get_strings,
3252         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3253         .get_sset_count = qeth_core_get_sset_count,
3254         .get_drvinfo = qeth_core_get_drvinfo,
3255         .get_settings = qeth_core_ethtool_get_settings,
3256 };
3257
3258 /*
3259  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3260  * NOARP on the netdevice is no option because it also turns off neighbor
3261  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3262  * arp resolution but we want the hard header (packet socket will work
3263  * e.g. tcpdump)
3264  */
3265 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3266 {
3267         n->nud_state = NUD_NOARP;
3268         memcpy(n->ha, "FAKELL", 6);
3269         n->output = n->ops->connected_output;
3270         return 0;
3271 }
3272
3273 static int
3274 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3275 {
3276         if (np->tbl->family == AF_INET)
3277                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3278
3279         return 0;
3280 }
3281
3282 static const struct net_device_ops qeth_l3_netdev_ops = {
3283         .ndo_open               = qeth_l3_open,
3284         .ndo_stop               = qeth_l3_stop,
3285         .ndo_get_stats          = qeth_get_stats,
3286         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3287         .ndo_validate_addr      = eth_validate_addr,
3288         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3289         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3290         .ndo_change_mtu         = qeth_change_mtu,
3291         .ndo_fix_features       = qeth_l3_fix_features,
3292         .ndo_set_features       = qeth_l3_set_features,
3293         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3294         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3295         .ndo_tx_timeout         = qeth_tx_timeout,
3296 };
3297
3298 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3299         .ndo_open               = qeth_l3_open,
3300         .ndo_stop               = qeth_l3_stop,
3301         .ndo_get_stats          = qeth_get_stats,
3302         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3303         .ndo_validate_addr      = eth_validate_addr,
3304         .ndo_set_rx_mode        = qeth_l3_set_multicast_list,
3305         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3306         .ndo_change_mtu         = qeth_change_mtu,
3307         .ndo_fix_features       = qeth_l3_fix_features,
3308         .ndo_set_features       = qeth_l3_set_features,
3309         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3310         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3311         .ndo_tx_timeout         = qeth_tx_timeout,
3312         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3313 };
3314
3315 static int qeth_l3_setup_netdev(struct qeth_card *card)
3316 {
3317         if (card->info.type == QETH_CARD_TYPE_OSD ||
3318             card->info.type == QETH_CARD_TYPE_OSX) {
3319                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3320                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3321 #ifdef CONFIG_TR
3322                         card->dev = alloc_trdev(0);
3323 #endif
3324                         if (!card->dev)
3325                                 return -ENODEV;
3326                         card->dev->netdev_ops = &qeth_l3_netdev_ops;
3327                 } else {
3328                         card->dev = alloc_etherdev(0);
3329                         if (!card->dev)
3330                                 return -ENODEV;
3331                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3332
3333                         /*IPv6 address autoconfiguration stuff*/
3334                         qeth_l3_get_unique_id(card);
3335                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3336                                 card->dev->dev_id = card->info.unique_id &
3337                                                          0xffff;
3338                         if (!card->info.guestlan) {
3339                                 card->dev->hw_features = NETIF_F_SG |
3340                                         NETIF_F_RXCSUM | NETIF_F_IP_CSUM |
3341                                         NETIF_F_TSO;
3342                                 card->dev->features = NETIF_F_RXCSUM;
3343                         }
3344                 }
3345         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3346                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3347                 if (!card->dev)
3348                         return -ENODEV;
3349                 card->dev->flags |= IFF_NOARP;
3350                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3351                 qeth_l3_iqd_read_initial_mac(card);
3352                 if (card->options.hsuid[0])
3353                         memcpy(card->dev->perm_addr, card->options.hsuid, 9);
3354         } else
3355                 return -ENODEV;
3356
3357         card->dev->ml_priv = card;
3358         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3359         card->dev->mtu = card->info.initial_mtu;
3360         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3361         card->dev->features |=  NETIF_F_HW_VLAN_TX |
3362                                 NETIF_F_HW_VLAN_RX |
3363                                 NETIF_F_HW_VLAN_FILTER;
3364         card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3365         card->dev->gso_max_size = 15 * PAGE_SIZE;
3366
3367         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3368         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3369         return register_netdev(card->dev);
3370 }
3371
3372 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3373 {
3374         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3375
3376         qeth_l3_create_device_attributes(&gdev->dev);
3377         card->options.layer2 = 0;
3378         card->info.hwtrap = 0;
3379         card->discipline.start_poll = qeth_qdio_start_poll;
3380         card->discipline.input_handler = (qdio_handler_t *)
3381                 qeth_qdio_input_handler;
3382         card->discipline.output_handler = (qdio_handler_t *)
3383                 qeth_qdio_output_handler;
3384         card->discipline.recover = qeth_l3_recover;
3385         return 0;
3386 }
3387
3388 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3389 {
3390         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3391
3392         qeth_l3_remove_device_attributes(&cgdev->dev);
3393
3394         qeth_set_allowed_threads(card, 0, 1);
3395         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3396
3397         if (cgdev->state == CCWGROUP_ONLINE)
3398                 qeth_l3_set_offline(cgdev);
3399
3400         if (card->dev) {
3401                 unregister_netdev(card->dev);
3402                 card->dev = NULL;
3403         }
3404
3405         qeth_l3_clear_ip_list(card, 0);
3406         qeth_l3_clear_ipato_list(card);
3407         return;
3408 }
3409
3410 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3411 {
3412         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3413         int rc = 0;
3414         enum qeth_card_states recover_flag;
3415
3416         BUG_ON(!card);
3417         mutex_lock(&card->discipline_mutex);
3418         mutex_lock(&card->conf_mutex);
3419         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3420         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3421
3422         recover_flag = card->state;
3423         rc = qeth_core_hardsetup_card(card);
3424         if (rc) {
3425                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3426                 rc = -ENODEV;
3427                 goto out_remove;
3428         }
3429
3430         if (!card->dev && qeth_l3_setup_netdev(card)) {
3431                 rc = -ENODEV;
3432                 goto out_remove;
3433         }
3434
3435         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
3436                 if (card->info.hwtrap &&
3437                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
3438                         card->info.hwtrap = 0;
3439         } else
3440                 card->info.hwtrap = 0;
3441
3442         card->state = CARD_STATE_HARDSETUP;
3443         memset(&card->rx, 0, sizeof(struct qeth_rx));
3444         qeth_print_status_message(card);
3445
3446         /* softsetup */
3447         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3448
3449         rc = qeth_send_startlan(card);
3450         if (rc) {
3451                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3452                 if (rc == 0xe080) {
3453                         dev_warn(&card->gdev->dev,
3454                                 "The LAN is offline\n");
3455                         card->lan_online = 0;
3456                         goto contin;
3457                 }
3458                 rc = -ENODEV;
3459                 goto out_remove;
3460         } else
3461                 card->lan_online = 1;
3462
3463 contin:
3464         rc = qeth_l3_setadapter_parms(card);
3465         if (rc)
3466                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3467         if (!card->options.sniffer) {
3468                 rc = qeth_l3_start_ipassists(card);
3469                 if (rc)
3470                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3471                 rc = qeth_l3_setrouting_v4(card);
3472                 if (rc)
3473                         QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3474                 rc = qeth_l3_setrouting_v6(card);
3475                 if (rc)
3476                         QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3477         }
3478         netif_tx_disable(card->dev);
3479
3480         rc = qeth_init_qdio_queues(card);
3481         if (rc) {
3482                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3483                 rc = -ENODEV;
3484                 goto out_remove;
3485         }
3486         card->state = CARD_STATE_SOFTSETUP;
3487
3488         qeth_set_allowed_threads(card, 0xffffffff, 0);
3489         qeth_l3_set_ip_addr_list(card);
3490         if (card->lan_online)
3491                 netif_carrier_on(card->dev);
3492         else
3493                 netif_carrier_off(card->dev);
3494         if (recover_flag == CARD_STATE_RECOVER) {
3495                 rtnl_lock();
3496                 if (recovery_mode)
3497                         __qeth_l3_open(card->dev);
3498                 else
3499                         dev_open(card->dev);
3500                 qeth_l3_set_multicast_list(card->dev);
3501                 rtnl_unlock();
3502         }
3503         /* let user_space know that device is online */
3504         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3505         mutex_unlock(&card->conf_mutex);
3506         mutex_unlock(&card->discipline_mutex);
3507         return 0;
3508 out_remove:
3509         qeth_l3_stop_card(card, 0);
3510         ccw_device_set_offline(CARD_DDEV(card));
3511         ccw_device_set_offline(CARD_WDEV(card));
3512         ccw_device_set_offline(CARD_RDEV(card));
3513         if (recover_flag == CARD_STATE_RECOVER)
3514                 card->state = CARD_STATE_RECOVER;
3515         else
3516                 card->state = CARD_STATE_DOWN;
3517         mutex_unlock(&card->conf_mutex);
3518         mutex_unlock(&card->discipline_mutex);
3519         return rc;
3520 }
3521
3522 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3523 {
3524         return __qeth_l3_set_online(gdev, 0);
3525 }
3526
3527 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3528                         int recovery_mode)
3529 {
3530         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3531         int rc = 0, rc2 = 0, rc3 = 0;
3532         enum qeth_card_states recover_flag;
3533
3534         mutex_lock(&card->discipline_mutex);
3535         mutex_lock(&card->conf_mutex);
3536         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3537         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3538
3539         if (card->dev && netif_carrier_ok(card->dev))
3540                 netif_carrier_off(card->dev);
3541         recover_flag = card->state;
3542         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
3543                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3544                 card->info.hwtrap = 1;
3545         }
3546         qeth_l3_stop_card(card, recovery_mode);
3547         if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) {
3548                 rtnl_lock();
3549                 call_netdevice_notifiers(NETDEV_REBOOT, card->dev);
3550                 rtnl_unlock();
3551         }
3552         rc  = ccw_device_set_offline(CARD_DDEV(card));
3553         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3554         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3555         if (!rc)
3556                 rc = (rc2) ? rc2 : rc3;
3557         if (rc)
3558                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3559         if (recover_flag == CARD_STATE_UP)
3560                 card->state = CARD_STATE_RECOVER;
3561         /* let user_space know that device is offline */
3562         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3563         mutex_unlock(&card->conf_mutex);
3564         mutex_unlock(&card->discipline_mutex);
3565         return 0;
3566 }
3567
3568 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3569 {
3570         return __qeth_l3_set_offline(cgdev, 0);
3571 }
3572
3573 static int qeth_l3_recover(void *ptr)
3574 {
3575         struct qeth_card *card;
3576         int rc = 0;
3577
3578         card = (struct qeth_card *) ptr;
3579         QETH_CARD_TEXT(card, 2, "recover1");
3580         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3581         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3582                 return 0;
3583         QETH_CARD_TEXT(card, 2, "recover2");
3584         dev_warn(&card->gdev->dev,
3585                 "A recovery process has been started for the device\n");
3586         __qeth_l3_set_offline(card->gdev, 1);
3587         rc = __qeth_l3_set_online(card->gdev, 1);
3588         if (!rc)
3589                 dev_info(&card->gdev->dev,
3590                         "Device successfully recovered!\n");
3591         else {
3592                 rtnl_lock();
3593                 dev_close(card->dev);
3594                 rtnl_unlock();
3595                 dev_warn(&card->gdev->dev, "The qeth device driver "
3596                         "failed to recover an error on the device\n");
3597         }
3598         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3599         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3600         return 0;
3601 }
3602
3603 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3604 {
3605         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3606         qeth_set_allowed_threads(card, 0, 1);
3607         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
3608                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3609         qeth_qdio_clear_card(card, 0);
3610         qeth_clear_qdio_buffers(card);
3611 }
3612
3613 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3614 {
3615         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3616
3617         if (card->dev)
3618                 netif_device_detach(card->dev);
3619         qeth_set_allowed_threads(card, 0, 1);
3620         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3621         if (gdev->state == CCWGROUP_OFFLINE)
3622                 return 0;
3623         if (card->state == CARD_STATE_UP) {
3624                 if (card->info.hwtrap)
3625                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
3626                 __qeth_l3_set_offline(card->gdev, 1);
3627         } else
3628                 __qeth_l3_set_offline(card->gdev, 0);
3629         return 0;
3630 }
3631
3632 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3633 {
3634         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3635         int rc = 0;
3636
3637         if (gdev->state == CCWGROUP_OFFLINE)
3638                 goto out;
3639
3640         if (card->state == CARD_STATE_RECOVER) {
3641                 rc = __qeth_l3_set_online(card->gdev, 1);
3642                 if (rc) {
3643                         rtnl_lock();
3644                         dev_close(card->dev);
3645                         rtnl_unlock();
3646                 }
3647         } else
3648                 rc = __qeth_l3_set_online(card->gdev, 0);
3649 out:
3650         qeth_set_allowed_threads(card, 0xffffffff, 0);
3651         if (card->dev)
3652                 netif_device_attach(card->dev);
3653         if (rc)
3654                 dev_warn(&card->gdev->dev, "The qeth device driver "
3655                         "failed to recover an error on the device\n");
3656         return rc;
3657 }
3658
3659 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3660         .probe = qeth_l3_probe_device,
3661         .remove = qeth_l3_remove_device,
3662         .set_online = qeth_l3_set_online,
3663         .set_offline = qeth_l3_set_offline,
3664         .shutdown = qeth_l3_shutdown,
3665         .freeze = qeth_l3_pm_suspend,
3666         .thaw = qeth_l3_pm_resume,
3667         .restore = qeth_l3_pm_resume,
3668 };
3669 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3670
3671 static int qeth_l3_ip_event(struct notifier_block *this,
3672                             unsigned long event, void *ptr)
3673 {
3674         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3675         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3676         struct qeth_ipaddr *addr;
3677         struct qeth_card *card;
3678
3679         if (dev_net(dev) != &init_net)
3680                 return NOTIFY_DONE;
3681
3682         card = qeth_l3_get_card_from_dev(dev);
3683         QETH_CARD_TEXT(card, 3, "ipevent");
3684         if (!card)
3685                 return NOTIFY_DONE;
3686
3687         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3688         if (addr != NULL) {
3689                 addr->u.a4.addr = ifa->ifa_address;
3690                 addr->u.a4.mask = ifa->ifa_mask;
3691                 addr->type = QETH_IP_TYPE_NORMAL;
3692         } else
3693                 goto out;
3694
3695         switch (event) {
3696         case NETDEV_UP:
3697                 if (!qeth_l3_add_ip(card, addr))
3698                         kfree(addr);
3699                 break;
3700         case NETDEV_DOWN:
3701                 if (!qeth_l3_delete_ip(card, addr))
3702                         kfree(addr);
3703                 break;
3704         default:
3705                 break;
3706         }
3707         qeth_l3_set_ip_addr_list(card);
3708 out:
3709         return NOTIFY_DONE;
3710 }
3711
3712 static struct notifier_block qeth_l3_ip_notifier = {
3713         qeth_l3_ip_event,
3714         NULL,
3715 };
3716
3717 #ifdef CONFIG_QETH_IPV6
3718 /**
3719  * IPv6 event handler
3720  */
3721 static int qeth_l3_ip6_event(struct notifier_block *this,
3722                              unsigned long event, void *ptr)
3723 {
3724         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3725         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3726         struct qeth_ipaddr *addr;
3727         struct qeth_card *card;
3728
3729         card = qeth_l3_get_card_from_dev(dev);
3730         if (!card)
3731                 return NOTIFY_DONE;
3732         QETH_CARD_TEXT(card, 3, "ip6event");
3733         if (!qeth_is_supported(card, IPA_IPV6))
3734                 return NOTIFY_DONE;
3735
3736         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3737         if (addr != NULL) {
3738                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3739                 addr->u.a6.pfxlen = ifa->prefix_len;
3740                 addr->type = QETH_IP_TYPE_NORMAL;
3741         } else
3742                 goto out;
3743
3744         switch (event) {
3745         case NETDEV_UP:
3746                 if (!qeth_l3_add_ip(card, addr))
3747                         kfree(addr);
3748                 break;
3749         case NETDEV_DOWN:
3750                 if (!qeth_l3_delete_ip(card, addr))
3751                         kfree(addr);
3752                 break;
3753         default:
3754                 break;
3755         }
3756         qeth_l3_set_ip_addr_list(card);
3757 out:
3758         return NOTIFY_DONE;
3759 }
3760
3761 static struct notifier_block qeth_l3_ip6_notifier = {
3762         qeth_l3_ip6_event,
3763         NULL,
3764 };
3765 #endif
3766
3767 static int qeth_l3_register_notifiers(void)
3768 {
3769         int rc;
3770
3771         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3772         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3773         if (rc)
3774                 return rc;
3775 #ifdef CONFIG_QETH_IPV6
3776         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3777         if (rc) {
3778                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3779                 return rc;
3780         }
3781 #else
3782         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3783 #endif
3784         return 0;
3785 }
3786
3787 static void qeth_l3_unregister_notifiers(void)
3788 {
3789
3790         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3791         BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3792 #ifdef CONFIG_QETH_IPV6
3793         BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3794 #endif /* QETH_IPV6 */
3795 }
3796
3797 static int __init qeth_l3_init(void)
3798 {
3799         int rc = 0;
3800
3801         pr_info("register layer 3 discipline\n");
3802         rc = qeth_l3_register_notifiers();
3803         return rc;
3804 }
3805
3806 static void __exit qeth_l3_exit(void)
3807 {
3808         qeth_l3_unregister_notifiers();
3809         pr_info("unregister layer 3 discipline\n");
3810 }
3811
3812 module_init(qeth_l3_init);
3813 module_exit(qeth_l3_exit);
3814 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3815 MODULE_DESCRIPTION("qeth layer 3 discipline");
3816 MODULE_LICENSE("GPL");