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/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/mii.h>
  21 #include <linux/ip.h>
  22 #include <linux/ipv6.h>
  23 #include <linux/inetdevice.h>
  24 #include <linux/igmp.h>
  25 #include <linux/slab.h>
  26
  27 #include <net/ip.h>
  28 #include <net/arp.h>
  29 #include <net/ip6_checksum.h>
  30
  31 #include "qeth_l3.h"
  32
  33
  34 static int qeth_l3_set_offline(struct ccwgroup_device *);
  35 static int qeth_l3_recover(void *);
  36 static int qeth_l3_stop(struct net_device *);
  37 static void qeth_l3_set_multicast_list(struct net_device *);
  38 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  39 static int qeth_l3_register_addr_entry(struct qeth_card *,
  40                 struct qeth_ipaddr *);
  41 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  42                 struct qeth_ipaddr *);
  43 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  44 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  45
  46 static int qeth_l3_isxdigit(char *buf)
  47 {
  48         while (*buf) {
  49                 if (!isxdigit(*buf++))
  50                         return 0;
  51         }
  52         return 1;
  53 }
  54
  55 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  56 {
  57         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
  58 }
  59
  60 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  61 {
  62         int count = 0, rc = 0;
  63         int in[4];
  64         char c;
  65
  66         rc = sscanf(buf, "%u.%u.%u.%u%c",
  67                     &in[0], &in[1], &in[2], &in[3], &c);
  68         if (rc != 4 && (rc != 5 || c != '\n'))
  69                 return -EINVAL;
  70         for (count = 0; count < 4; count++) {
  71                 if (in[count] > 255)
  72                         return -EINVAL;
  73                 addr[count] = in[count];
  74         }
  75         return 0;
  76 }
  77
  78 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
  79 {
  80         sprintf(buf, "%pI6", addr);
  81 }
  82
  83 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
  84 {
  85         const char *end, *end_tmp, *start;
  86         __u16 *in;
  87         char num[5];
  88         int num2, cnt, out, found, save_cnt;
  89         unsigned short in_tmp[8] = {0, };
  90
  91         cnt = out = found = save_cnt = num2 = 0;
  92         end = start = buf;
  93         in = (__u16 *) addr;
  94         memset(in, 0, 16);
  95         while (*end) {
  96                 end = strchr(start, ':');
  97                 if (end == NULL) {
  98                         end = buf + strlen(buf);
  99                         end_tmp = strchr(start, '\n');
 100                         if (end_tmp != NULL)
 101                                 end = end_tmp;
 102                         out = 1;
 103                 }
 104                 if ((end - start)) {
 105                         memset(num, 0, 5);
 106                         if ((end - start) > 4)
 107                                 return -EINVAL;
 108                         memcpy(num, start, end - start);
 109                         if (!qeth_l3_isxdigit(num))
 110                                 return -EINVAL;
 111                         sscanf(start, "%x", &num2);
 112                         if (found)
 113                                 in_tmp[save_cnt++] = num2;
 114                         else
 115                                 in[cnt++] = num2;
 116                         if (out)
 117                                 break;
 118                 } else {
 119                         if (found)
 120                                 return -EINVAL;
 121                         found = 1;
 122                 }
 123                 start = ++end;
 124         }
 125         if (cnt + save_cnt > 8)
 126                 return -EINVAL;
 127         cnt = 7;
 128         while (save_cnt)
 129                 in[cnt--] = in_tmp[--save_cnt];
 130         return 0;
 131 }
 132
 133 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 134                                 char *buf)
 135 {
 136         if (proto == QETH_PROT_IPV4)
 137                 qeth_l3_ipaddr4_to_string(addr, buf);
 138         else if (proto == QETH_PROT_IPV6)
 139                 qeth_l3_ipaddr6_to_string(addr, buf);
 140 }
 141
 142 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 143                                 __u8 *addr)
 144 {
 145         if (proto == QETH_PROT_IPV4)
 146                 return qeth_l3_string_to_ipaddr4(buf, addr);
 147         else if (proto == QETH_PROT_IPV6)
 148                 return qeth_l3_string_to_ipaddr6(buf, addr);
 149         else
 150                 return -EINVAL;
 151 }
 152
 153 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 154 {
 155         int i, j;
 156         u8 octet;
 157
 158         for (i = 0; i < len; ++i) {
 159                 octet = addr[i];
 160                 for (j = 7; j >= 0; --j) {
 161                         bits[i*8 + j] = octet & 1;
 162                         octet >>= 1;
 163                 }
 164         }
 165 }
 166
 167 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 168                                                 struct qeth_ipaddr *addr)
 169 {
 170         struct qeth_ipato_entry *ipatoe;
 171         u8 addr_bits[128] = {0, };
 172         u8 ipatoe_bits[128] = {0, };
 173         int rc = 0;
 174
 175         if (!card->ipato.enabled)
 176                 return 0;
 177
 178         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 179                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 180         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 181                 if (addr->proto != ipatoe->proto)
 182                         continue;
 183                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 184                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 185                                           4 : 16);
 186                 if (addr->proto == QETH_PROT_IPV4)
 187                         rc = !memcmp(addr_bits, ipatoe_bits,
 188                                      min(32, ipatoe->mask_bits));
 189                 else
 190                         rc = !memcmp(addr_bits, ipatoe_bits,
 191                                      min(128, ipatoe->mask_bits));
 192                 if (rc)
 193                         break;
 194         }
 195         /* invert? */
 196         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 197                 rc = !rc;
 198         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 199                 rc = !rc;
 200
 201         return rc;
 202 }
 203
 204 /*
 205  * Add IP to be added to todo list. If there is already an "add todo"
 206  * in this list we just incremenent the reference count.
 207  * Returns 0 if we  just incremented reference count.
 208  */
 209 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
 210                                         struct qeth_ipaddr *addr, int add)
 211 {
 212         struct qeth_ipaddr *tmp, *t;
 213         int found = 0;
 214
 215         if (card->options.sniffer)
 216                 return 0;
 217         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
 218                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
 219                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
 220                         return 0;
 221                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
 222                     (addr->proto       == QETH_PROT_IPV4)     &&
 223                     (tmp->type         == addr->type)         &&
 224                     (tmp->is_multicast == addr->is_multicast) &&
 225                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
 226                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
 227                         found = 1;
 228                         break;
 229                 }
 230                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
 231                     (addr->proto       == QETH_PROT_IPV6)      &&
 232                     (tmp->type         == addr->type)          &&
 233                     (tmp->is_multicast == addr->is_multicast)  &&
 234                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
 235                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 236                             sizeof(struct in6_addr)) == 0)) {
 237                         found = 1;
 238                         break;
 239                 }
 240         }
 241         if (found) {
 242                 if (addr->users != 0)
 243                         tmp->users += addr->users;
 244                 else
 245                         tmp->users += add ? 1 : -1;
 246                 if (tmp->users == 0) {
 247                         list_del(&tmp->entry);
 248                         kfree(tmp);
 249                 }
 250                 return 0;
 251         } else {
 252                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
 253                         list_add(&addr->entry, card->ip_tbd_list);
 254                 else {
 255                         if (addr->users == 0)
 256                                 addr->users += add ? 1 : -1;
 257                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
 258                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 259                                 QETH_CARD_TEXT(card, 2, "tkovaddr");
 260                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 261                         }
 262                         list_add_tail(&addr->entry, card->ip_tbd_list);
 263                 }
 264                 return 1;
 265         }
 266 }
 267
 268 static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 269 {
 270         unsigned long flags;
 271         int rc = 0;
 272
 273         QETH_CARD_TEXT(card, 4, "delip");
 274
 275         if (addr->proto == QETH_PROT_IPV4)
 276                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 277         else {
 278                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 279                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 280         }
 281         spin_lock_irqsave(&card->ip_lock, flags);
 282         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
 283         spin_unlock_irqrestore(&card->ip_lock, flags);
 284         return rc;
 285 }
 286
 287 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 288 {
 289         unsigned long flags;
 290         int rc = 0;
 291
 292         QETH_CARD_TEXT(card, 4, "addip");
 293         if (addr->proto == QETH_PROT_IPV4)
 294                 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4);
 295         else {
 296                 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8);
 297                 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 298         }
 299         spin_lock_irqsave(&card->ip_lock, flags);
 300         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
 301         spin_unlock_irqrestore(&card->ip_lock, flags);
 302         return rc;
 303 }
 304
 305
 306 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 307                                 enum qeth_prot_versions prot)
 308 {
 309         struct qeth_ipaddr *addr;
 310
 311         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 312         if (addr == NULL) {
 313                 return NULL;
 314         }
 315         addr->type = QETH_IP_TYPE_NORMAL;
 316         addr->proto = prot;
 317         return addr;
 318 }
 319
 320 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
 321 {
 322         struct qeth_ipaddr *iptodo;
 323         unsigned long flags;
 324
 325         QETH_CARD_TEXT(card, 4, "delmc");
 326         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
 327         if (!iptodo) {
 328                 QETH_CARD_TEXT(card, 2, "dmcnomem");
 329                 return;
 330         }
 331         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
 332         spin_lock_irqsave(&card->ip_lock, flags);
 333         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
 334                 kfree(iptodo);
 335         spin_unlock_irqrestore(&card->ip_lock, flags);
 336 }
 337
 338 /*
 339  * Add/remove address to/from card's ip list, i.e. try to add or remove
 340  * reference to/from an IP address that is already registered on the card.
 341  * Returns:
 342  *      0  address was on card and its reference count has been adjusted,
 343  *         but is still > 0, so nothing has to be done
 344  *         also returns 0 if card was not on card and the todo was to delete
 345  *         the address -> there is also nothing to be done
 346  *      1  address was not on card and the todo is to add it to the card's ip
 347  *         list
 348  *      -1 address was on card and its reference count has been decremented
 349  *         to <= 0 by the todo -> address must be removed from card
 350  */
 351 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
 352                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
 353 {
 354         struct qeth_ipaddr *addr;
 355         int found = 0;
 356
 357         list_for_each_entry(addr, &card->ip_list, entry) {
 358                 if ((addr->proto == QETH_PROT_IPV4) &&
 359                     (todo->proto == QETH_PROT_IPV4) &&
 360                     (addr->type == todo->type) &&
 361                     (addr->u.a4.addr == todo->u.a4.addr) &&
 362                     (addr->u.a4.mask == todo->u.a4.mask)) {
 363                         found = 1;
 364                         break;
 365                 }
 366                 if ((addr->proto == QETH_PROT_IPV6) &&
 367                     (todo->proto == QETH_PROT_IPV6) &&
 368                     (addr->type == todo->type) &&
 369                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
 370                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
 371                             sizeof(struct in6_addr)) == 0)) {
 372                         found = 1;
 373                         break;
 374                 }
 375         }
 376         if (found) {
 377                 addr->users += todo->users;
 378                 if (addr->users <= 0) {
 379                         *__addr = addr;
 380                         return -1;
 381                 } else {
 382                         /* for VIPA and RXIP limit refcount to 1 */
 383                         if (addr->type != QETH_IP_TYPE_NORMAL)
 384                                 addr->users = 1;
 385                         return 0;
 386                 }
 387         }
 388         if (todo->users > 0) {
 389                 /* for VIPA and RXIP limit refcount to 1 */
 390                 if (todo->type != QETH_IP_TYPE_NORMAL)
 391                         todo->users = 1;
 392                 return 1;
 393         } else
 394                 return 0;
 395 }
 396
 397 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
 398                                         unsigned long *flags)
 399 {
 400         struct list_head fail_list;
 401         struct qeth_ipaddr *addr, *tmp;
 402         int rc;
 403
 404         INIT_LIST_HEAD(&fail_list);
 405 again:
 406         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
 407                 if (addr->is_multicast) {
 408                         list_del(&addr->entry);
 409                         spin_unlock_irqrestore(&card->ip_lock, *flags);
 410                         rc = qeth_l3_deregister_addr_entry(card, addr);
 411                         spin_lock_irqsave(&card->ip_lock, *flags);
 412                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
 413                                 kfree(addr);
 414                         else
 415                                 list_add_tail(&addr->entry, &fail_list);
 416                         goto again;
 417                 }
 418         }
 419         list_splice(&fail_list, &card->ip_list);
 420 }
 421
 422 static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
 423 {
 424         struct list_head *tbd_list;
 425         struct qeth_ipaddr *todo, *addr;
 426         unsigned long flags;
 427         int rc;
 428
 429         QETH_CARD_TEXT(card, 2, "sdiplist");
 430         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
 431
 432         if ((card->state != CARD_STATE_UP &&
 433              card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) {
 434                 return;
 435         }
 436
 437         spin_lock_irqsave(&card->ip_lock, flags);
 438         tbd_list = card->ip_tbd_list;
 439         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
 440         if (!card->ip_tbd_list) {
 441                 QETH_CARD_TEXT(card, 0, "silnomem");
 442                 card->ip_tbd_list = tbd_list;
 443                 spin_unlock_irqrestore(&card->ip_lock, flags);
 444                 return;
 445         } else
 446                 INIT_LIST_HEAD(card->ip_tbd_list);
 447
 448         while (!list_empty(tbd_list)) {
 449                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
 450                 list_del(&todo->entry);
 451                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
 452                         __qeth_l3_delete_all_mc(card, &flags);
 453                         kfree(todo);
 454                         continue;
 455                 }
 456                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
 457                 if (rc == 0) {
 458                         /* nothing to be done; only adjusted refcount */
 459                         kfree(todo);
 460                 } else if (rc == 1) {
 461                         /* new entry to be added to on-card list */
 462                         spin_unlock_irqrestore(&card->ip_lock, flags);
 463                         rc = qeth_l3_register_addr_entry(card, todo);
 464                         spin_lock_irqsave(&card->ip_lock, flags);
 465                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
 466                                 list_add_tail(&todo->entry, &card->ip_list);
 467                         else
 468                                 kfree(todo);
 469                 } else if (rc == -1) {
 470                         /* on-card entry to be removed */
 471                         list_del_init(&addr->entry);
 472                         spin_unlock_irqrestore(&card->ip_lock, flags);
 473                         rc = qeth_l3_deregister_addr_entry(card, addr);
 474                         spin_lock_irqsave(&card->ip_lock, flags);
 475                         if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
 476                                 kfree(addr);
 477                         else
 478                                 list_add_tail(&addr->entry, &card->ip_list);
 479                         kfree(todo);
 480                 }
 481         }
 482         spin_unlock_irqrestore(&card->ip_lock, flags);
 483         kfree(tbd_list);
 484 }
 485
 486 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover)
 487 {
 488         struct qeth_ipaddr *addr, *tmp;
 489         unsigned long flags;
 490
 491         QETH_CARD_TEXT(card, 4, "clearip");
 492         if (recover && card->options.sniffer)
 493                 return;
 494         spin_lock_irqsave(&card->ip_lock, flags);
 495         /* clear todo list */
 496         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
 497                 list_del(&addr->entry);
 498                 kfree(addr);
 499         }
 500
 501         while (!list_empty(&card->ip_list)) {
 502                 addr = list_entry(card->ip_list.next,
 503                                   struct qeth_ipaddr, entry);
 504                 list_del_init(&addr->entry);
 505                 if (!recover || addr->is_multicast) {
 506                         kfree(addr);
 507                         continue;
 508                 }
 509                 list_add_tail(&addr->entry, card->ip_tbd_list);
 510         }
 511         spin_unlock_irqrestore(&card->ip_lock, flags);
 512 }
 513
 514 static int qeth_l3_address_exists_in_list(struct list_head *list,
 515                 struct qeth_ipaddr *addr, int same_type)
 516 {
 517         struct qeth_ipaddr *tmp;
 518
 519         list_for_each_entry(tmp, list, entry) {
 520                 if ((tmp->proto == QETH_PROT_IPV4) &&
 521                     (addr->proto == QETH_PROT_IPV4) &&
 522                     ((same_type && (tmp->type == addr->type)) ||
 523                     (!same_type && (tmp->type != addr->type))) &&
 524                     (tmp->u.a4.addr == addr->u.a4.addr))
 525                         return 1;
 526
 527                 if ((tmp->proto == QETH_PROT_IPV6) &&
 528                     (addr->proto == QETH_PROT_IPV6) &&
 529                     ((same_type && (tmp->type == addr->type)) ||
 530                     (!same_type && (tmp->type != addr->type))) &&
 531                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 532                             sizeof(struct in6_addr)) == 0))
 533                         return 1;
 534
 535         }
 536         return 0;
 537 }
 538
 539 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 540                         struct qeth_ipaddr *addr, int ipacmd)
 541 {
 542         int rc;
 543         struct qeth_cmd_buffer *iob;
 544         struct qeth_ipa_cmd *cmd;
 545
 546         QETH_CARD_TEXT(card, 4, "setdelmc");
 547
 548         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 549         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 550         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 551         if (addr->proto == QETH_PROT_IPV6)
 552                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 553                        sizeof(struct in6_addr));
 554         else
 555                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 556
 557         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 558
 559         return rc;
 560 }
 561
 562 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 563 {
 564         int i, j;
 565         for (i = 0; i < 16; i++) {
 566                 j = (len) - (i * 8);
 567                 if (j >= 8)
 568                         netmask[i] = 0xff;
 569                 else if (j > 0)
 570                         netmask[i] = (u8)(0xFF00 >> j);
 571                 else
 572                         netmask[i] = 0;
 573         }
 574 }
 575
 576 static int qeth_l3_send_setdelip(struct qeth_card *card,
 577                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 578 {
 579         int rc;
 580         struct qeth_cmd_buffer *iob;
 581         struct qeth_ipa_cmd *cmd;
 582         __u8 netmask[16];
 583
 584         QETH_CARD_TEXT(card, 4, "setdelip");
 585         QETH_CARD_TEXT_(card, 4, "flags%02X", flags);
 586
 587         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 588         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 589         if (addr->proto == QETH_PROT_IPV6) {
 590                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 591                        sizeof(struct in6_addr));
 592                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 593                 memcpy(cmd->data.setdelip6.mask, netmask,
 594                        sizeof(struct in6_addr));
 595                 cmd->data.setdelip6.flags = flags;
 596         } else {
 597                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 598                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 599                 cmd->data.setdelip4.flags = flags;
 600         }
 601
 602         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 603
 604         return rc;
 605 }
 606
 607 static int qeth_l3_send_setrouting(struct qeth_card *card,
 608         enum qeth_routing_types type, enum qeth_prot_versions prot)
 609 {
 610         int rc;
 611         struct qeth_ipa_cmd *cmd;
 612         struct qeth_cmd_buffer *iob;
 613
 614         QETH_CARD_TEXT(card, 4, "setroutg");
 615         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 616         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 617         cmd->data.setrtg.type = (type);
 618         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 619
 620         return rc;
 621 }
 622
 623 static void qeth_l3_correct_routing_type(struct qeth_card *card,
 624                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 625 {
 626         if (card->info.type == QETH_CARD_TYPE_IQD) {
 627                 switch (*type) {
 628                 case NO_ROUTER:
 629                 case PRIMARY_CONNECTOR:
 630                 case SECONDARY_CONNECTOR:
 631                 case MULTICAST_ROUTER:
 632                         return;
 633                 default:
 634                         goto out_inval;
 635                 }
 636         } else {
 637                 switch (*type) {
 638                 case NO_ROUTER:
 639                 case PRIMARY_ROUTER:
 640                 case SECONDARY_ROUTER:
 641                         return;
 642                 case MULTICAST_ROUTER:
 643                         if (qeth_is_ipafunc_supported(card, prot,
 644                                                       IPA_OSA_MC_ROUTER))
 645                                 return;
 646                 default:
 647                         goto out_inval;
 648                 }
 649         }
 650 out_inval:
 651         *type = NO_ROUTER;
 652 }
 653
 654 int qeth_l3_setrouting_v4(struct qeth_card *card)
 655 {
 656         int rc;
 657
 658         QETH_CARD_TEXT(card, 3, "setrtg4");
 659
 660         qeth_l3_correct_routing_type(card, &card->options.route4.type,
 661                                   QETH_PROT_IPV4);
 662
 663         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 664                                   QETH_PROT_IPV4);
 665         if (rc) {
 666                 card->options.route4.type = NO_ROUTER;
 667                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 668                         " on %s. Type set to 'no router'.\n", rc,
 669                         QETH_CARD_IFNAME(card));
 670         }
 671         return rc;
 672 }
 673
 674 int qeth_l3_setrouting_v6(struct qeth_card *card)
 675 {
 676         int rc = 0;
 677
 678         QETH_CARD_TEXT(card, 3, "setrtg6");
 679 #ifdef CONFIG_QETH_IPV6
 680
 681         if (!qeth_is_supported(card, IPA_IPV6))
 682                 return 0;
 683         qeth_l3_correct_routing_type(card, &card->options.route6.type,
 684                                   QETH_PROT_IPV6);
 685
 686         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 687                                   QETH_PROT_IPV6);
 688         if (rc) {
 689                 card->options.route6.type = NO_ROUTER;
 690                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 691                         " on %s. Type set to 'no router'.\n", rc,
 692                         QETH_CARD_IFNAME(card));
 693         }
 694 #endif
 695         return rc;
 696 }
 697
 698 /*
 699  * IP address takeover related functions
 700  */
 701 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 702 {
 703
 704         struct qeth_ipato_entry *ipatoe, *tmp;
 705         unsigned long flags;
 706
 707         spin_lock_irqsave(&card->ip_lock, flags);
 708         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 709                 list_del(&ipatoe->entry);
 710                 kfree(ipatoe);
 711         }
 712         spin_unlock_irqrestore(&card->ip_lock, flags);
 713 }
 714
 715 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 716                                 struct qeth_ipato_entry *new)
 717 {
 718         struct qeth_ipato_entry *ipatoe;
 719         unsigned long flags;
 720         int rc = 0;
 721
 722         QETH_CARD_TEXT(card, 2, "addipato");
 723         spin_lock_irqsave(&card->ip_lock, flags);
 724         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 725                 if (ipatoe->proto != new->proto)
 726                         continue;
 727                 if (!memcmp(ipatoe->addr, new->addr,
 728                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 729                     (ipatoe->mask_bits == new->mask_bits)) {
 730                         rc = -EEXIST;
 731                         break;
 732                 }
 733         }
 734         if (!rc)
 735                 list_add_tail(&new->entry, &card->ipato.entries);
 736
 737         spin_unlock_irqrestore(&card->ip_lock, flags);
 738         return rc;
 739 }
 740
 741 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 742                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 743 {
 744         struct qeth_ipato_entry *ipatoe, *tmp;
 745         unsigned long flags;
 746
 747         QETH_CARD_TEXT(card, 2, "delipato");
 748         spin_lock_irqsave(&card->ip_lock, flags);
 749         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 750                 if (ipatoe->proto != proto)
 751                         continue;
 752                 if (!memcmp(ipatoe->addr, addr,
 753                             (proto == QETH_PROT_IPV4)? 4:16) &&
 754                     (ipatoe->mask_bits == mask_bits)) {
 755                         list_del(&ipatoe->entry);
 756                         kfree(ipatoe);
 757                 }
 758         }
 759         spin_unlock_irqrestore(&card->ip_lock, flags);
 760 }
 761
 762 /*
 763  * VIPA related functions
 764  */
 765 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 766               const u8 *addr)
 767 {
 768         struct qeth_ipaddr *ipaddr;
 769         unsigned long flags;
 770         int rc = 0;
 771
 772         ipaddr = qeth_l3_get_addr_buffer(proto);
 773         if (ipaddr) {
 774                 if (proto == QETH_PROT_IPV4) {
 775                         QETH_CARD_TEXT(card, 2, "addvipa4");
 776                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 777                         ipaddr->u.a4.mask = 0;
 778                 } else if (proto == QETH_PROT_IPV6) {
 779                         QETH_CARD_TEXT(card, 2, "addvipa6");
 780                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 781                         ipaddr->u.a6.pfxlen = 0;
 782                 }
 783                 ipaddr->type = QETH_IP_TYPE_VIPA;
 784                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 785                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 786         } else
 787                 return -ENOMEM;
 788         spin_lock_irqsave(&card->ip_lock, flags);
 789         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 790             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 791                 rc = -EEXIST;
 792         spin_unlock_irqrestore(&card->ip_lock, flags);
 793         if (rc) {
 794                 return rc;
 795         }
 796         if (!qeth_l3_add_ip(card, ipaddr))
 797                 kfree(ipaddr);
 798         qeth_l3_set_ip_addr_list(card);
 799         return rc;
 800 }
 801
 802 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 803               const u8 *addr)
 804 {
 805         struct qeth_ipaddr *ipaddr;
 806
 807         ipaddr = qeth_l3_get_addr_buffer(proto);
 808         if (ipaddr) {
 809                 if (proto == QETH_PROT_IPV4) {
 810                         QETH_CARD_TEXT(card, 2, "delvipa4");
 811                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 812                         ipaddr->u.a4.mask = 0;
 813                 } else if (proto == QETH_PROT_IPV6) {
 814                         QETH_CARD_TEXT(card, 2, "delvipa6");
 815                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 816                         ipaddr->u.a6.pfxlen = 0;
 817                 }
 818                 ipaddr->type = QETH_IP_TYPE_VIPA;
 819         } else
 820                 return;
 821         if (!qeth_l3_delete_ip(card, ipaddr))
 822                 kfree(ipaddr);
 823         qeth_l3_set_ip_addr_list(card);
 824 }
 825
 826 /*
 827  * proxy ARP related functions
 828  */
 829 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 830               const u8 *addr)
 831 {
 832         struct qeth_ipaddr *ipaddr;
 833         unsigned long flags;
 834         int rc = 0;
 835
 836         ipaddr = qeth_l3_get_addr_buffer(proto);
 837         if (ipaddr) {
 838                 if (proto == QETH_PROT_IPV4) {
 839                         QETH_CARD_TEXT(card, 2, "addrxip4");
 840                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 841                         ipaddr->u.a4.mask = 0;
 842                 } else if (proto == QETH_PROT_IPV6) {
 843                         QETH_CARD_TEXT(card, 2, "addrxip6");
 844                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 845                         ipaddr->u.a6.pfxlen = 0;
 846                 }
 847                 ipaddr->type = QETH_IP_TYPE_RXIP;
 848                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 849                 ipaddr->del_flags = 0;
 850         } else
 851                 return -ENOMEM;
 852         spin_lock_irqsave(&card->ip_lock, flags);
 853         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 854             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 855                 rc = -EEXIST;
 856         spin_unlock_irqrestore(&card->ip_lock, flags);
 857         if (rc) {
 858                 return rc;
 859         }
 860         if (!qeth_l3_add_ip(card, ipaddr))
 861                 kfree(ipaddr);
 862         qeth_l3_set_ip_addr_list(card);
 863         return 0;
 864 }
 865
 866 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 867                         const u8 *addr)
 868 {
 869         struct qeth_ipaddr *ipaddr;
 870
 871         ipaddr = qeth_l3_get_addr_buffer(proto);
 872         if (ipaddr) {
 873                 if (proto == QETH_PROT_IPV4) {
 874                         QETH_CARD_TEXT(card, 2, "addrxip4");
 875                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 876                         ipaddr->u.a4.mask = 0;
 877                 } else if (proto == QETH_PROT_IPV6) {
 878                         QETH_CARD_TEXT(card, 2, "addrxip6");
 879                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 880                         ipaddr->u.a6.pfxlen = 0;
 881                 }
 882                 ipaddr->type = QETH_IP_TYPE_RXIP;
 883         } else
 884                 return;
 885         if (!qeth_l3_delete_ip(card, ipaddr))
 886                 kfree(ipaddr);
 887         qeth_l3_set_ip_addr_list(card);
 888 }
 889
 890 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 891                                 struct qeth_ipaddr *addr)
 892 {
 893         char buf[50];
 894         int rc = 0;
 895         int cnt = 3;
 896
 897         if (addr->proto == QETH_PROT_IPV4) {
 898                 QETH_CARD_TEXT(card, 2, "setaddr4");
 899                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 900         } else if (addr->proto == QETH_PROT_IPV6) {
 901                 QETH_CARD_TEXT(card, 2, "setaddr6");
 902                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 903                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 904         } else {
 905                 QETH_CARD_TEXT(card, 2, "setaddr?");
 906                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 907         }
 908         do {
 909                 if (addr->is_multicast)
 910                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 911                 else
 912                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 913                                         addr->set_flags);
 914                 if (rc)
 915                         QETH_CARD_TEXT(card, 2, "failed");
 916         } while ((--cnt > 0) && rc);
 917         if (rc) {
 918                 QETH_CARD_TEXT(card, 2, "FAILED");
 919                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 920                 dev_warn(&card->gdev->dev,
 921                         "Registering IP address %s failed\n", buf);
 922         }
 923         return rc;
 924 }
 925
 926 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 927                                                 struct qeth_ipaddr *addr)
 928 {
 929         int rc = 0;
 930
 931         if (addr->proto == QETH_PROT_IPV4) {
 932                 QETH_CARD_TEXT(card, 2, "deladdr4");
 933                 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int));
 934         } else if (addr->proto == QETH_PROT_IPV6) {
 935                 QETH_CARD_TEXT(card, 2, "deladdr6");
 936                 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8);
 937                 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 938         } else {
 939                 QETH_CARD_TEXT(card, 2, "deladdr?");
 940                 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr));
 941         }
 942         if (addr->is_multicast)
 943                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 944         else
 945                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 946                                         addr->del_flags);
 947         if (rc)
 948                 QETH_CARD_TEXT(card, 2, "failed");
 949
 950         return rc;
 951 }
 952
 953 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 954 {
 955         if (cast_type == RTN_MULTICAST)
 956                 return QETH_CAST_MULTICAST;
 957         if (cast_type == RTN_BROADCAST)
 958                 return QETH_CAST_BROADCAST;
 959         return QETH_CAST_UNICAST;
 960 }
 961
 962 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 963 {
 964         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 965         if (cast_type == RTN_MULTICAST)
 966                 return ct | QETH_CAST_MULTICAST;
 967         if (cast_type == RTN_ANYCAST)
 968                 return ct | QETH_CAST_ANYCAST;
 969         if (cast_type == RTN_BROADCAST)
 970                 return ct | QETH_CAST_BROADCAST;
 971         return ct | QETH_CAST_UNICAST;
 972 }
 973
 974 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
 975                                         __u32 mode)
 976 {
 977         int rc;
 978         struct qeth_cmd_buffer *iob;
 979         struct qeth_ipa_cmd *cmd;
 980
 981         QETH_CARD_TEXT(card, 4, "adpmode");
 982
 983         iob = qeth_get_adapter_cmd(card, command,
 984                                    sizeof(struct qeth_ipacmd_setadpparms));
 985         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 986         cmd->data.setadapterparms.data.mode = mode;
 987         rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
 988                                NULL);
 989         return rc;
 990 }
 991
 992 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
 993 {
 994         int rc;
 995
 996         QETH_CARD_TEXT(card, 4, "adphstr");
 997
 998         if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
 999                 rc = qeth_l3_send_setadp_mode(card,
1000                                         IPA_SETADP_SET_BROADCAST_MODE,
1001                                         card->options.broadcast_mode);
1002                 if (rc)
1003                         QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1004                                    "device %s: x%x\n",
1005                                    CARD_BUS_ID(card), rc);
1006                 rc = qeth_l3_send_setadp_mode(card,
1007                                         IPA_SETADP_ALTER_MAC_ADDRESS,
1008                                         card->options.macaddr_mode);
1009                 if (rc)
1010                         QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1011                                    "device %s: x%x\n", CARD_BUS_ID(card), rc);
1012                 return rc;
1013         }
1014         if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1015                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1016                            "to set broadcast mode, using ALLRINGS "
1017                            "on device %s:\n", CARD_BUS_ID(card));
1018         if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1019                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1020                            "to set macaddr mode, using NONCANONICAL "
1021                            "on device %s:\n", CARD_BUS_ID(card));
1022         return 0;
1023 }
1024
1025 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1026 {
1027         int rc;
1028
1029         QETH_DBF_TEXT(SETUP, 2, "setadprm");
1030
1031         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1032                 dev_info(&card->gdev->dev,
1033                         "set adapter parameters not supported.\n");
1034                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1035                 return 0;
1036         }
1037         rc = qeth_query_setadapterparms(card);
1038         if (rc) {
1039                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1040                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1041                 return rc;
1042         }
1043         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1044                 rc = qeth_setadpparms_change_macaddr(card);
1045                 if (rc)
1046                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1047                                 " address failed\n");
1048         }
1049
1050         if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1051             (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1052                 rc = qeth_l3_setadapter_hstr(card);
1053
1054         return rc;
1055 }
1056
1057 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1058                         struct qeth_reply *reply, unsigned long data)
1059 {
1060         struct qeth_ipa_cmd *cmd;
1061
1062         QETH_CARD_TEXT(card, 4, "defadpcb");
1063
1064         cmd = (struct qeth_ipa_cmd *) data;
1065         if (cmd->hdr.return_code == 0) {
1066                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1067                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1068                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1069                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1070                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1071         }
1072         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1073             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1074                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1075                 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask);
1076         }
1077         if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM &&
1078             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1079                 card->info.tx_csum_mask =
1080                         cmd->data.setassparms.data.flags_32bit;
1081                 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask);
1082         }
1083
1084         return 0;
1085 }
1086
1087 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1088         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1089         __u16 len, enum qeth_prot_versions prot)
1090 {
1091         struct qeth_cmd_buffer *iob;
1092         struct qeth_ipa_cmd *cmd;
1093
1094         QETH_CARD_TEXT(card, 4, "getasscm");
1095         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1096
1097         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1098         cmd->data.setassparms.hdr.assist_no = ipa_func;
1099         cmd->data.setassparms.hdr.length = 8 + len;
1100         cmd->data.setassparms.hdr.command_code = cmd_code;
1101         cmd->data.setassparms.hdr.return_code = 0;
1102         cmd->data.setassparms.hdr.seq_no = 0;
1103
1104         return iob;
1105 }
1106
1107 static int qeth_l3_send_setassparms(struct qeth_card *card,
1108         struct qeth_cmd_buffer *iob, __u16 len, long data,
1109         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1110                 unsigned long),
1111         void *reply_param)
1112 {
1113         int rc;
1114         struct qeth_ipa_cmd *cmd;
1115
1116         QETH_CARD_TEXT(card, 4, "sendassp");
1117
1118         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1119         if (len <= sizeof(__u32))
1120                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1121         else   /* (len > sizeof(__u32)) */
1122                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1123
1124         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1125         return rc;
1126 }
1127
1128 #ifdef CONFIG_QETH_IPV6
1129 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1130                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1131 {
1132         int rc;
1133         struct qeth_cmd_buffer *iob;
1134
1135         QETH_CARD_TEXT(card, 4, "simassp6");
1136         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1137                                        0, QETH_PROT_IPV6);
1138         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1139                                    qeth_l3_default_setassparms_cb, NULL);
1140         return rc;
1141 }
1142 #endif
1143
1144 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1145                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1146 {
1147         int rc;
1148         int length = 0;
1149         struct qeth_cmd_buffer *iob;
1150
1151         QETH_CARD_TEXT(card, 4, "simassp4");
1152         if (data)
1153                 length = sizeof(__u32);
1154         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1155                                        length, QETH_PROT_IPV4);
1156         rc = qeth_l3_send_setassparms(card, iob, length, data,
1157                                    qeth_l3_default_setassparms_cb, NULL);
1158         return rc;
1159 }
1160
1161 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1162 {
1163         int rc;
1164
1165         QETH_CARD_TEXT(card, 3, "ipaarp");
1166
1167         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1168                 dev_info(&card->gdev->dev,
1169                         "ARP processing not supported on %s!\n",
1170                         QETH_CARD_IFNAME(card));
1171                 return 0;
1172         }
1173         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1174                                         IPA_CMD_ASS_START, 0);
1175         if (rc) {
1176                 dev_warn(&card->gdev->dev,
1177                         "Starting ARP processing support for %s failed\n",
1178                         QETH_CARD_IFNAME(card));
1179         }
1180         return rc;
1181 }
1182
1183 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1184 {
1185         int rc;
1186
1187         QETH_CARD_TEXT(card, 3, "ipaipfrg");
1188
1189         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1190                 dev_info(&card->gdev->dev,
1191                         "Hardware IP fragmentation not supported on %s\n",
1192                         QETH_CARD_IFNAME(card));
1193                 return  -EOPNOTSUPP;
1194         }
1195
1196         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1197                                           IPA_CMD_ASS_START, 0);
1198         if (rc) {
1199                 dev_warn(&card->gdev->dev,
1200                         "Starting IP fragmentation support for %s failed\n",
1201                         QETH_CARD_IFNAME(card));
1202         } else
1203                 dev_info(&card->gdev->dev,
1204                         "Hardware IP fragmentation enabled \n");
1205         return rc;
1206 }
1207
1208 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1209 {
1210         int rc;
1211
1212         QETH_CARD_TEXT(card, 3, "stsrcmac");
1213
1214         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1215                 dev_info(&card->gdev->dev,
1216                         "Inbound source MAC-address not supported on %s\n",
1217                         QETH_CARD_IFNAME(card));
1218                 return -EOPNOTSUPP;
1219         }
1220
1221         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1222                                           IPA_CMD_ASS_START, 0);
1223         if (rc)
1224                 dev_warn(&card->gdev->dev,
1225                         "Starting source MAC-address support for %s failed\n",
1226                         QETH_CARD_IFNAME(card));
1227         return rc;
1228 }
1229
1230 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1231 {
1232         int rc = 0;
1233
1234         QETH_CARD_TEXT(card, 3, "strtvlan");
1235
1236         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1237                 dev_info(&card->gdev->dev,
1238                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1239                 return -EOPNOTSUPP;
1240         }
1241
1242         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1243                                           IPA_CMD_ASS_START, 0);
1244         if (rc) {
1245                 dev_warn(&card->gdev->dev,
1246                         "Starting VLAN support for %s failed\n",
1247                         QETH_CARD_IFNAME(card));
1248         } else {
1249                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1250         }
1251         return rc;
1252 }
1253
1254 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1255 {
1256         int rc;
1257
1258         QETH_CARD_TEXT(card, 3, "stmcast");
1259
1260         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1261                 dev_info(&card->gdev->dev,
1262                         "Multicast not supported on %s\n",
1263                         QETH_CARD_IFNAME(card));
1264                 return -EOPNOTSUPP;
1265         }
1266
1267         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1268                                           IPA_CMD_ASS_START, 0);
1269         if (rc) {
1270                 dev_warn(&card->gdev->dev,
1271                         "Starting multicast support for %s failed\n",
1272                         QETH_CARD_IFNAME(card));
1273         } else {
1274                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1275                 card->dev->flags |= IFF_MULTICAST;
1276         }
1277         return rc;
1278 }
1279
1280 static int qeth_l3_query_ipassists_cb(struct qeth_card *card,
1281                 struct qeth_reply *reply, unsigned long data)
1282 {
1283         struct qeth_ipa_cmd *cmd;
1284
1285         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
1286
1287         cmd = (struct qeth_ipa_cmd *) data;
1288         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
1289                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
1290                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1291         } else {
1292                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
1293                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1294         }
1295         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
1296         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
1297         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
1298         return 0;
1299 }
1300
1301 static int qeth_l3_query_ipassists(struct qeth_card *card,
1302                                 enum qeth_prot_versions prot)
1303 {
1304         int rc;
1305         struct qeth_cmd_buffer *iob;
1306
1307         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
1308         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
1309         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL);
1310         return rc;
1311 }
1312
1313 #ifdef CONFIG_QETH_IPV6
1314 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1315 {
1316         int rc;
1317
1318         QETH_CARD_TEXT(card, 3, "softipv6");
1319
1320         if (card->info.type == QETH_CARD_TYPE_IQD)
1321                 goto out;
1322
1323         rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6);
1324         if (rc) {
1325                 dev_err(&card->gdev->dev,
1326                         "Activating IPv6 support for %s failed\n",
1327                         QETH_CARD_IFNAME(card));
1328                 return rc;
1329         }
1330         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1331                                           IPA_CMD_ASS_START, 3);
1332         if (rc) {
1333                 dev_err(&card->gdev->dev,
1334                         "Activating IPv6 support for %s failed\n",
1335                         QETH_CARD_IFNAME(card));
1336                 return rc;
1337         }
1338         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1339                                                IPA_CMD_ASS_START);
1340         if (rc) {
1341                 dev_err(&card->gdev->dev,
1342                         "Activating IPv6 support for %s failed\n",
1343                          QETH_CARD_IFNAME(card));
1344                 return rc;
1345         }
1346         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1347                                                IPA_CMD_ASS_START);
1348         if (rc) {
1349                 dev_warn(&card->gdev->dev,
1350                         "Enabling the passthrough mode for %s failed\n",
1351                         QETH_CARD_IFNAME(card));
1352                 return rc;
1353         }
1354 out:
1355         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1356         return 0;
1357 }
1358 #endif
1359
1360 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1361 {
1362         int rc = 0;
1363
1364         QETH_CARD_TEXT(card, 3, "strtipv6");
1365
1366         if (!qeth_is_supported(card, IPA_IPV6)) {
1367                 dev_info(&card->gdev->dev,
1368                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1369                 return 0;
1370         }
1371 #ifdef CONFIG_QETH_IPV6
1372         rc = qeth_l3_softsetup_ipv6(card);
1373 #endif
1374         return rc ;
1375 }
1376
1377 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1378 {
1379         int rc;
1380
1381         QETH_CARD_TEXT(card, 3, "stbrdcst");
1382         card->info.broadcast_capable = 0;
1383         if (!qeth_is_supported(card, IPA_FILTERING)) {
1384                 dev_info(&card->gdev->dev,
1385                         "Broadcast not supported on %s\n",
1386                         QETH_CARD_IFNAME(card));
1387                 rc = -EOPNOTSUPP;
1388                 goto out;
1389         }
1390         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1391                                           IPA_CMD_ASS_START, 0);
1392         if (rc) {
1393                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1394                         "%s failed\n", QETH_CARD_IFNAME(card));
1395                 goto out;
1396         }
1397
1398         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1399                                           IPA_CMD_ASS_CONFIGURE, 1);
1400         if (rc) {
1401                 dev_warn(&card->gdev->dev,
1402                         "Setting up broadcast filtering for %s failed\n",
1403                         QETH_CARD_IFNAME(card));
1404                 goto out;
1405         }
1406         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1407         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1408         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1409                                           IPA_CMD_ASS_ENABLE, 1);
1410         if (rc) {
1411                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1412                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1413                 goto out;
1414         }
1415         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1416 out:
1417         if (card->info.broadcast_capable)
1418                 card->dev->flags |= IFF_BROADCAST;
1419         else
1420                 card->dev->flags &= ~IFF_BROADCAST;
1421         return rc;
1422 }
1423
1424 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1425 {
1426         int rc;
1427
1428         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1429                                           IPA_CMD_ASS_START, 0);
1430         if (rc) {
1431                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1432                         "failed, using SW checksumming\n",
1433                         QETH_CARD_IFNAME(card));
1434                 return rc;
1435         }
1436         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1437                                           IPA_CMD_ASS_ENABLE,
1438                                           card->info.csum_mask);
1439         if (rc) {
1440                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1441                         "failed, using SW checksumming\n",
1442                         QETH_CARD_IFNAME(card));
1443                 return rc;
1444         }
1445         return 0;
1446 }
1447
1448 int qeth_l3_set_rx_csum(struct qeth_card *card,
1449         enum qeth_checksum_types csum_type)
1450 {
1451         int rc = 0;
1452
1453         if (card->options.checksum_type == HW_CHECKSUMMING) {
1454                 if ((csum_type != HW_CHECKSUMMING) &&
1455                         (card->state != CARD_STATE_DOWN)) {
1456                         rc = qeth_l3_send_simple_setassparms(card,
1457                                 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1458                         if (rc)
1459                                 return -EIO;
1460                 }
1461                 card->dev->features |= NETIF_F_RXCSUM;
1462         } else {
1463                 if (csum_type == HW_CHECKSUMMING) {
1464                         if (card->state != CARD_STATE_DOWN) {
1465                                 if (!qeth_is_supported(card,
1466                                     IPA_INBOUND_CHECKSUM))
1467                                         return -EPERM;
1468                                 rc = qeth_l3_send_checksum_command(card);
1469                                 if (rc)
1470                                         return -EIO;
1471                         }
1472                 }
1473                 card->dev->features &= ~NETIF_F_RXCSUM;
1474         }
1475         card->options.checksum_type = csum_type;
1476         return rc;
1477 }
1478
1479 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1480 {
1481         int rc = 0;
1482
1483         QETH_CARD_TEXT(card, 3, "strtcsum");
1484
1485         if (card->options.checksum_type == NO_CHECKSUMMING) {
1486                 dev_info(&card->gdev->dev,
1487                         "Using no checksumming on %s.\n",
1488                         QETH_CARD_IFNAME(card));
1489                 return 0;
1490         }
1491         if (card->options.checksum_type == SW_CHECKSUMMING) {
1492                 dev_info(&card->gdev->dev,
1493                         "Using SW checksumming on %s.\n",
1494                         QETH_CARD_IFNAME(card));
1495                 return 0;
1496         }
1497         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1498                 dev_info(&card->gdev->dev,
1499                         "Inbound HW Checksumming not "
1500                         "supported on %s,\ncontinuing "
1501                         "using Inbound SW Checksumming\n",
1502                         QETH_CARD_IFNAME(card));
1503                 card->options.checksum_type = SW_CHECKSUMMING;
1504                 return 0;
1505         }
1506         rc = qeth_l3_send_checksum_command(card);
1507         if (!rc)
1508                 dev_info(&card->gdev->dev,
1509                         "HW Checksumming (inbound) enabled\n");
1510
1511         return rc;
1512 }
1513
1514 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card)
1515 {
1516         int rc = 0;
1517
1518         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
1519                 return rc;
1520         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1521                           IPA_CMD_ASS_START, 0);
1522         if (rc)
1523                 goto err_out;
1524         rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM,
1525                           IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask);
1526         if (rc)
1527                 goto err_out;
1528         dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n");
1529         return rc;
1530 err_out:
1531         dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s "
1532                 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card));
1533         return rc;
1534 }
1535
1536 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1537 {
1538         int rc;
1539
1540         QETH_CARD_TEXT(card, 3, "sttso");
1541
1542         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1543                 dev_info(&card->gdev->dev,
1544                         "Outbound TSO not supported on %s\n",
1545                         QETH_CARD_IFNAME(card));
1546                 rc = -EOPNOTSUPP;
1547         } else {
1548                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1549                                                 IPA_CMD_ASS_START, 0);
1550                 if (rc)
1551                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1552                                 "segmentation offload for %s failed\n",
1553                                 QETH_CARD_IFNAME(card));
1554                 else
1555                         dev_info(&card->gdev->dev,
1556                                 "Outbound TSO enabled\n");
1557         }
1558         if (rc)
1559                 card->dev->features &= ~NETIF_F_TSO;
1560         return rc;
1561 }
1562
1563 static int qeth_l3_start_ipassists(struct qeth_card *card)
1564 {
1565         QETH_CARD_TEXT(card, 3, "strtipas");
1566
1567         qeth_set_access_ctrl_online(card);      /* go on*/
1568         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1569         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1570         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1571         qeth_l3_start_ipa_vlan(card);           /* go on*/
1572         qeth_l3_start_ipa_multicast(card);              /* go on*/
1573         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1574         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1575         qeth_l3_start_ipa_checksum(card);               /* go on*/
1576         qeth_l3_start_ipa_tx_checksum(card);
1577         qeth_l3_start_ipa_tso(card);            /* go on*/
1578         return 0;
1579 }
1580
1581 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1582                 struct qeth_reply *reply, unsigned long data)
1583 {
1584         struct qeth_ipa_cmd *cmd;
1585
1586         cmd = (struct qeth_ipa_cmd *) data;
1587         if (cmd->hdr.return_code == 0)
1588                 memcpy(card->dev->dev_addr,
1589                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1590         else
1591                 random_ether_addr(card->dev->dev_addr);
1592
1593         return 0;
1594 }
1595
1596 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1597 {
1598         int rc = 0;
1599         struct qeth_cmd_buffer *iob;
1600         struct qeth_ipa_cmd *cmd;
1601
1602         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1603
1604         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1605                                      QETH_PROT_IPV6);
1606         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1607         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1608                         card->info.unique_id;
1609
1610         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1611                                 NULL);
1612         return rc;
1613 }
1614
1615 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1616                 struct qeth_reply *reply, unsigned long data)
1617 {
1618         struct qeth_ipa_cmd *cmd;
1619
1620         cmd = (struct qeth_ipa_cmd *) data;
1621         if (cmd->hdr.return_code == 0)
1622                 card->info.unique_id = *((__u16 *)
1623                                 &cmd->data.create_destroy_addr.unique_id[6]);
1624         else {
1625                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1626                                         UNIQUE_ID_NOT_BY_CARD;
1627                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1628                         "generate a unique ID\n");
1629         }
1630         return 0;
1631 }
1632
1633 static int qeth_l3_get_unique_id(struct qeth_card *card)
1634 {
1635         int rc = 0;
1636         struct qeth_cmd_buffer *iob;
1637         struct qeth_ipa_cmd *cmd;
1638
1639         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1640
1641         if (!qeth_is_supported(card, IPA_IPV6)) {
1642                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1643                                         UNIQUE_ID_NOT_BY_CARD;
1644                 return 0;
1645         }
1646
1647         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1648                                      QETH_PROT_IPV6);
1649         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1650         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1651                         card->info.unique_id;
1652
1653         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1654         return rc;
1655 }
1656
1657 static int
1658 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1659                             unsigned long data)
1660 {
1661         struct qeth_ipa_cmd        *cmd;
1662         __u16 rc;
1663
1664         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1665
1666         cmd = (struct qeth_ipa_cmd *)data;
1667         rc = cmd->hdr.return_code;
1668         if (rc)
1669                 QETH_CARD_TEXT_(card, 2, "dxter%x", rc);
1670         switch (cmd->data.diagass.action) {
1671         case QETH_DIAGS_CMD_TRACE_QUERY:
1672                 break;
1673         case QETH_DIAGS_CMD_TRACE_DISABLE:
1674                 switch (rc) {
1675                 case 0:
1676                 case IPA_RC_INVALID_SUBCMD:
1677                         card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1678                         dev_info(&card->gdev->dev, "The HiperSockets network "
1679                                 "traffic analyzer is deactivated\n");
1680                         break;
1681                 default:
1682                         break;
1683                 }
1684                 break;
1685         case QETH_DIAGS_CMD_TRACE_ENABLE:
1686                 switch (rc) {
1687                 case 0:
1688                         card->info.promisc_mode = SET_PROMISC_MODE_ON;
1689                         dev_info(&card->gdev->dev, "The HiperSockets network "
1690                                 "traffic analyzer is activated\n");
1691                         break;
1692                 case IPA_RC_HARDWARE_AUTH_ERROR:
1693                         dev_warn(&card->gdev->dev, "The device is not "
1694                                 "authorized to run as a HiperSockets network "
1695                                 "traffic analyzer\n");
1696                         break;
1697                 case IPA_RC_TRACE_ALREADY_ACTIVE:
1698                         dev_warn(&card->gdev->dev, "A HiperSockets "
1699                                 "network traffic analyzer is already "
1700                                 "active in the HiperSockets LAN\n");
1701                         break;
1702                 default:
1703                         break;
1704                 }
1705                 break;
1706         default:
1707                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1708                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1709         }
1710
1711         return 0;
1712 }
1713
1714 static int
1715 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1716 {
1717         struct qeth_cmd_buffer *iob;
1718         struct qeth_ipa_cmd    *cmd;
1719
1720         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1721
1722         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1723         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1724         cmd->data.diagass.subcmd_len = 16;
1725         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1726         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1727         cmd->data.diagass.action = diags_cmd;
1728         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1729 }
1730
1731 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1732                                 struct net_device *dev)
1733 {
1734         if (dev->type == ARPHRD_IEEE802_TR)
1735                 ip_tr_mc_map(ipm, mac);
1736         else
1737                 ip_eth_mc_map(ipm, mac);
1738 }
1739
1740 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1741 {
1742         struct qeth_ipaddr *ipm;
1743         struct ip_mc_list *im4;
1744         char buf[MAX_ADDR_LEN];
1745
1746         QETH_CARD_TEXT(card, 4, "addmc");
1747         for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL;
1748              im4 = rcu_dereference(im4->next_rcu)) {
1749                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1750                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1751                 if (!ipm)
1752                         continue;
1753                 ipm->u.a4.addr = im4->multiaddr;
1754                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1755                 ipm->is_multicast = 1;
1756                 if (!qeth_l3_add_ip(card, ipm))
1757                         kfree(ipm);
1758         }
1759 }
1760
1761 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1762 {
1763         struct in_device *in_dev;
1764         struct vlan_group *vg;
1765         int i;
1766
1767         QETH_CARD_TEXT(card, 4, "addmcvl");
1768         if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1769                 return;
1770
1771         vg = card->vlangrp;
1772         for (i = 0; i < VLAN_N_VID; i++) {
1773                 struct net_device *netdev = vlan_group_get_device(vg, i);
1774                 if (netdev == NULL ||
1775                     !(netdev->flags & IFF_UP))
1776                         continue;
1777                 in_dev = in_dev_get(netdev);
1778                 if (!in_dev)
1779                         continue;
1780                 rcu_read_lock();
1781                 qeth_l3_add_mc(card, in_dev);
1782                 rcu_read_unlock();
1783                 in_dev_put(in_dev);
1784         }
1785 }
1786
1787 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1788 {
1789         struct in_device *in4_dev;
1790
1791         QETH_CARD_TEXT(card, 4, "chkmcv4");
1792         in4_dev = in_dev_get(card->dev);
1793         if (in4_dev == NULL)
1794                 return;
1795         rcu_read_lock();
1796         qeth_l3_add_mc(card, in4_dev);
1797         qeth_l3_add_vlan_mc(card);
1798         rcu_read_unlock();
1799         in_dev_put(in4_dev);
1800 }
1801
1802 #ifdef CONFIG_QETH_IPV6
1803 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1804 {
1805         struct qeth_ipaddr *ipm;
1806         struct ifmcaddr6 *im6;
1807         char buf[MAX_ADDR_LEN];
1808
1809         QETH_CARD_TEXT(card, 4, "addmc6");
1810         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1811                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1812                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1813                 if (!ipm)
1814                         continue;
1815                 ipm->is_multicast = 1;
1816                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1817                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1818                        sizeof(struct in6_addr));
1819                 if (!qeth_l3_add_ip(card, ipm))
1820                         kfree(ipm);
1821         }
1822 }
1823
1824 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1825 {
1826         struct inet6_dev *in_dev;
1827         struct vlan_group *vg;
1828         int i;
1829
1830         QETH_CARD_TEXT(card, 4, "admc6vl");
1831         if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1832                 return;
1833
1834         vg = card->vlangrp;
1835         for (i = 0; i < VLAN_N_VID; i++) {
1836                 struct net_device *netdev = vlan_group_get_device(vg, i);
1837                 if (netdev == NULL ||
1838                     !(netdev->flags & IFF_UP))
1839                         continue;
1840                 in_dev = in6_dev_get(netdev);
1841                 if (!in_dev)
1842                         continue;
1843                 read_lock_bh(&in_dev->lock);
1844                 qeth_l3_add_mc6(card, in_dev);
1845                 read_unlock_bh(&in_dev->lock);
1846                 in6_dev_put(in_dev);
1847         }
1848 }
1849
1850 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1851 {
1852         struct inet6_dev *in6_dev;
1853
1854         QETH_CARD_TEXT(card, 4, "chkmcv6");
1855         if (!qeth_is_supported(card, IPA_IPV6))
1856                 return ;
1857         in6_dev = in6_dev_get(card->dev);
1858         if (in6_dev == NULL)
1859                 return;
1860         read_lock_bh(&in6_dev->lock);
1861         qeth_l3_add_mc6(card, in6_dev);
1862         qeth_l3_add_vlan_mc6(card);
1863         read_unlock_bh(&in6_dev->lock);
1864         in6_dev_put(in6_dev);
1865 }
1866 #endif /* CONFIG_QETH_IPV6 */
1867
1868 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1869                         unsigned short vid)
1870 {
1871         struct in_device *in_dev;
1872         struct in_ifaddr *ifa;
1873         struct qeth_ipaddr *addr;
1874
1875         QETH_CARD_TEXT(card, 4, "frvaddr4");
1876
1877         in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1878         if (!in_dev)
1879                 return;
1880         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1881                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1882                 if (addr) {
1883                         addr->u.a4.addr = ifa->ifa_address;
1884                         addr->u.a4.mask = ifa->ifa_mask;
1885                         addr->type = QETH_IP_TYPE_NORMAL;
1886                         if (!qeth_l3_delete_ip(card, addr))
1887                                 kfree(addr);
1888                 }
1889         }
1890         in_dev_put(in_dev);
1891 }
1892
1893 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1894                         unsigned short vid)
1895 {
1896 #ifdef CONFIG_QETH_IPV6
1897         struct inet6_dev *in6_dev;
1898         struct inet6_ifaddr *ifa;
1899         struct qeth_ipaddr *addr;
1900
1901         QETH_CARD_TEXT(card, 4, "frvaddr6");
1902
1903         in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1904         if (!in6_dev)
1905                 return;
1906         list_for_each_entry(ifa, &in6_dev->addr_list, if_list) {
1907                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1908                 if (addr) {
1909                         memcpy(&addr->u.a6.addr, &ifa->addr,
1910                                sizeof(struct in6_addr));
1911                         addr->u.a6.pfxlen = ifa->prefix_len;
1912                         addr->type = QETH_IP_TYPE_NORMAL;
1913                         if (!qeth_l3_delete_ip(card, addr))
1914                                 kfree(addr);
1915                 }
1916         }
1917         in6_dev_put(in6_dev);
1918 #endif /* CONFIG_QETH_IPV6 */
1919 }
1920
1921 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1922                         unsigned short vid)
1923 {
1924         if (!card->vlangrp)
1925                 return;
1926         qeth_l3_free_vlan_addresses4(card, vid);
1927         qeth_l3_free_vlan_addresses6(card, vid);
1928 }
1929
1930 static void qeth_l3_vlan_rx_register(struct net_device *dev,
1931                         struct vlan_group *grp)
1932 {
1933         struct qeth_card *card = dev->ml_priv;
1934         unsigned long flags;
1935
1936         QETH_CARD_TEXT(card, 4, "vlanreg");
1937         spin_lock_irqsave(&card->vlanlock, flags);
1938         card->vlangrp = grp;
1939         spin_unlock_irqrestore(&card->vlanlock, flags);
1940 }
1941
1942 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1943 {
1944         return;
1945 }
1946
1947 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1948 {
1949         struct qeth_card *card = dev->ml_priv;
1950         unsigned long flags;
1951
1952         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
1953         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1954                 QETH_CARD_TEXT(card, 3, "kidREC");
1955                 return;
1956         }
1957         spin_lock_irqsave(&card->vlanlock, flags);
1958         /* unregister IP addresses of vlan device */
1959         qeth_l3_free_vlan_addresses(card, vid);
1960         vlan_group_set_device(card->vlangrp, vid, NULL);
1961         spin_unlock_irqrestore(&card->vlanlock, flags);
1962         qeth_l3_set_multicast_list(card->dev);
1963 }
1964
1965 static inline int qeth_l3_rebuild_skb(struct qeth_card *card,
1966                         struct sk_buff *skb, struct qeth_hdr *hdr,
1967                         unsigned short *vlan_id)
1968 {
1969         __be16 prot;
1970         struct iphdr *ip_hdr;
1971         unsigned char tg_addr[MAX_ADDR_LEN];
1972         int is_vlan = 0;
1973
1974         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1975                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1976                               ETH_P_IP);
1977                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1978                 case QETH_CAST_MULTICAST:
1979                         switch (prot) {
1980 #ifdef CONFIG_QETH_IPV6
1981                         case __constant_htons(ETH_P_IPV6):
1982                                 ndisc_mc_map((struct in6_addr *)
1983                                      skb->data + 24,
1984                                      tg_addr, card->dev, 0);
1985                                 break;
1986 #endif
1987                         case __constant_htons(ETH_P_IP):
1988                                 ip_hdr = (struct iphdr *)skb->data;
1989                                 (card->dev->type == ARPHRD_IEEE802_TR) ?
1990                                 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
1991                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
1992                                 break;
1993                         default:
1994                                 memcpy(tg_addr, card->dev->broadcast,
1995                                         card->dev->addr_len);
1996                         }
1997                         card->stats.multicast++;
1998                         skb->pkt_type = PACKET_MULTICAST;
1999                         break;
2000                 case QETH_CAST_BROADCAST:
2001                         memcpy(tg_addr, card->dev->broadcast,
2002                                 card->dev->addr_len);
2003                         card->stats.multicast++;
2004                         skb->pkt_type = PACKET_BROADCAST;
2005                         break;
2006                 case QETH_CAST_UNICAST:
2007                 case QETH_CAST_ANYCAST:
2008                 case QETH_CAST_NOCAST:
2009                 default:
2010                         if (card->options.sniffer)
2011                                 skb->pkt_type = PACKET_OTHERHOST;
2012                         else
2013                                 skb->pkt_type = PACKET_HOST;
2014                         memcpy(tg_addr, card->dev->dev_addr,
2015                                 card->dev->addr_len);
2016                 }
2017                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
2018                         card->dev->header_ops->create(skb, card->dev, prot,
2019                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
2020                                 card->dev->addr_len);
2021                 else
2022                         card->dev->header_ops->create(skb, card->dev, prot,
2023                                 tg_addr, "FAKELL", card->dev->addr_len);
2024         }
2025
2026 #ifdef CONFIG_TR
2027         if (card->dev->type == ARPHRD_IEEE802_TR)
2028                 skb->protocol = tr_type_trans(skb, card->dev);
2029         else
2030 #endif
2031                 skb->protocol = eth_type_trans(skb, card->dev);
2032
2033         if (hdr->hdr.l3.ext_flags &
2034             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
2035                 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ?
2036                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
2037                 is_vlan = 1;
2038         }
2039
2040         switch (card->options.checksum_type) {
2041         case SW_CHECKSUMMING:
2042                 skb->ip_summed = CHECKSUM_NONE;
2043                 break;
2044         case NO_CHECKSUMMING:
2045                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2046                 break;
2047         case HW_CHECKSUMMING:
2048                 if ((hdr->hdr.l3.ext_flags &
2049                     (QETH_HDR_EXT_CSUM_HDR_REQ |
2050                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
2051                     (QETH_HDR_EXT_CSUM_HDR_REQ |
2052                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
2053                         skb->ip_summed = CHECKSUM_UNNECESSARY;
2054                 else
2055                         skb->ip_summed = CHECKSUM_NONE;
2056         }
2057
2058         return is_vlan;
2059 }
2060
2061 static int qeth_l3_process_inbound_buffer(struct qeth_card *card,
2062                                 int budget, int *done)
2063 {
2064         int work_done = 0;
2065         struct sk_buff *skb;
2066         struct qeth_hdr *hdr;
2067         __u16 vlan_tag = 0;
2068         int is_vlan;
2069         unsigned int len;
2070
2071         *done = 0;
2072         BUG_ON(!budget);
2073         while (budget) {
2074                 skb = qeth_core_get_next_skb(card,
2075                         card->qdio.in_q->bufs[card->rx.b_index].buffer,
2076                         &card->rx.b_element, &card->rx.e_offset, &hdr);
2077                 if (!skb) {
2078                         *done = 1;
2079                         break;
2080                 }
2081                 skb->dev = card->dev;
2082                 switch (hdr->hdr.l3.id) {
2083                 case QETH_HEADER_TYPE_LAYER3:
2084                         is_vlan = qeth_l3_rebuild_skb(card, skb, hdr,
2085                                                       &vlan_tag);
2086                         len = skb->len;
2087                         if (is_vlan && !card->options.sniffer)
2088                                 vlan_gro_receive(&card->napi, card->vlangrp,
2089                                         vlan_tag, skb);
2090                         else
2091                                 napi_gro_receive(&card->napi, skb);
2092                         break;
2093                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2094                         skb->pkt_type = PACKET_HOST;
2095                         skb->protocol = eth_type_trans(skb, skb->dev);
2096                         len = skb->len;
2097                         netif_receive_skb(skb);
2098                         break;
2099                 default:
2100                         dev_kfree_skb_any(skb);
2101                         QETH_CARD_TEXT(card, 3, "inbunkno");
2102                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2103                         continue;
2104                 }
2105                 work_done++;
2106                 budget--;
2107                 card->stats.rx_packets++;
2108                 card->stats.rx_bytes += len;
2109         }
2110         return work_done;
2111 }
2112
2113 static int qeth_l3_poll(struct napi_struct *napi, int budget)
2114 {
2115         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
2116         int work_done = 0;
2117         struct qeth_qdio_buffer *buffer;
2118         int done;
2119         int new_budget = budget;
2120
2121         if (card->options.performance_stats) {
2122                 card->perf_stats.inbound_cnt++;
2123                 card->perf_stats.inbound_start_time = qeth_get_micros();
2124         }
2125
2126         while (1) {
2127                 if (!card->rx.b_count) {
2128                         card->rx.qdio_err = 0;
2129                         card->rx.b_count = qdio_get_next_buffers(
2130                                 card->data.ccwdev, 0, &card->rx.b_index,
2131                                 &card->rx.qdio_err);
2132                         if (card->rx.b_count <= 0) {
2133                                 card->rx.b_count = 0;
2134                                 break;
2135                         }
2136                         card->rx.b_element =
2137                                 &card->qdio.in_q->bufs[card->rx.b_index]
2138                                 .buffer->element[0];
2139                         card->rx.e_offset = 0;
2140                 }
2141
2142                 while (card->rx.b_count) {
2143                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
2144                         if (!(card->rx.qdio_err &&
2145                             qeth_check_qdio_errors(card, buffer->buffer,
2146                             card->rx.qdio_err, "qinerr")))
2147                                 work_done += qeth_l3_process_inbound_buffer(
2148                                         card, new_budget, &done);
2149                         else
2150                                 done = 1;
2151
2152                         if (done) {
2153                                 if (card->options.performance_stats)
2154                                         card->perf_stats.bufs_rec++;
2155                                 qeth_put_buffer_pool_entry(card,
2156                                         buffer->pool_entry);
2157                                 qeth_queue_input_buffer(card, card->rx.b_index);
2158                                 card->rx.b_count--;
2159                                 if (card->rx.b_count) {
2160                                         card->rx.b_index =
2161                                                 (card->rx.b_index + 1) %
2162                                                 QDIO_MAX_BUFFERS_PER_Q;
2163                                         card->rx.b_element =
2164                                                 &card->qdio.in_q
2165                                                 ->bufs[card->rx.b_index]
2166                                                 .buffer->element[0];
2167                                         card->rx.e_offset = 0;
2168                                 }
2169                         }
2170
2171                         if (work_done >= budget)
2172                                 goto out;
2173                         else
2174                                 new_budget = budget - work_done;
2175                 }
2176         }
2177
2178         napi_complete(napi);
2179         if (qdio_start_irq(card->data.ccwdev, 0))
2180                 napi_schedule(&card->napi);
2181 out:
2182         if (card->options.performance_stats)
2183                 card->perf_stats.inbound_time += qeth_get_micros() -
2184                         card->perf_stats.inbound_start_time;
2185         return work_done;
2186 }
2187
2188 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2189                         struct qeth_card *card)
2190 {
2191         int rc = 0;
2192         struct vlan_group *vg;
2193         int i;
2194
2195         vg = card->vlangrp;
2196         if (!vg)
2197                 return rc;
2198
2199         for (i = 0; i < VLAN_N_VID; i++) {
2200                 if (vlan_group_get_device(vg, i) == dev) {
2201                         rc = QETH_VLAN_CARD;
2202                         break;
2203                 }
2204         }
2205
2206         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2207                 return 0;
2208
2209         return rc;
2210 }
2211
2212 static int qeth_l3_verify_dev(struct net_device *dev)
2213 {
2214         struct qeth_card *card;
2215         unsigned long flags;
2216         int rc = 0;
2217
2218         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2219         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2220                 if (card->dev == dev) {
2221                         rc = QETH_REAL_CARD;
2222                         break;
2223                 }
2224                 rc = qeth_l3_verify_vlan_dev(dev, card);
2225                 if (rc)
2226                         break;
2227         }
2228         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2229
2230         return rc;
2231 }
2232
2233 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2234 {
2235         struct qeth_card *card = NULL;
2236         int rc;
2237
2238         rc = qeth_l3_verify_dev(dev);
2239         if (rc == QETH_REAL_CARD)
2240                 card = dev->ml_priv;
2241         else if (rc == QETH_VLAN_CARD)
2242                 card = vlan_dev_real_dev(dev)->ml_priv;
2243         if (card && card->options.layer2)
2244                 card = NULL;
2245         if (card)
2246                 QETH_CARD_TEXT_(card, 4, "%d", rc);
2247         return card ;
2248 }
2249
2250 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2251 {
2252         int rc = 0;
2253
2254         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2255         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2256
2257         qeth_set_allowed_threads(card, 0, 1);
2258         if (card->options.sniffer &&
2259             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2260                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2261         if (card->read.state == CH_STATE_UP &&
2262             card->write.state == CH_STATE_UP &&
2263             (card->state == CARD_STATE_UP)) {
2264                 if (recovery_mode)
2265                         qeth_l3_stop(card->dev);
2266                 else {
2267                         rtnl_lock();
2268                         dev_close(card->dev);
2269                         rtnl_unlock();
2270                 }
2271                 card->state = CARD_STATE_SOFTSETUP;
2272         }
2273         if (card->state == CARD_STATE_SOFTSETUP) {
2274                 qeth_l3_clear_ip_list(card, 1);
2275                 qeth_clear_ipacmd_list(card);
2276                 card->state = CARD_STATE_HARDSETUP;
2277         }
2278         if (card->state == CARD_STATE_HARDSETUP) {
2279                 qeth_qdio_clear_card(card, 0);
2280                 qeth_clear_qdio_buffers(card);
2281                 qeth_clear_working_pool_list(card);
2282                 card->state = CARD_STATE_DOWN;
2283         }
2284         if (card->state == CARD_STATE_DOWN) {
2285                 qeth_clear_cmd_buffers(&card->read);
2286                 qeth_clear_cmd_buffers(&card->write);
2287         }
2288         return rc;
2289 }
2290
2291 /*
2292  * test for and Switch promiscuous mode (on or off)
2293  *  either for guestlan or HiperSocket Sniffer
2294  */
2295 static void
2296 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2297 {
2298         struct net_device *dev = card->dev;
2299
2300         if (((dev->flags & IFF_PROMISC) &&
2301              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2302             (!(dev->flags & IFF_PROMISC) &&
2303              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2304                 return;
2305
2306         if (card->info.guestlan) {              /* Guestlan trace */
2307                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2308                         qeth_setadp_promisc_mode(card);
2309         } else if (card->options.sniffer &&     /* HiperSockets trace */
2310                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2311                 if (dev->flags & IFF_PROMISC) {
2312                         QETH_CARD_TEXT(card, 3, "+promisc");
2313                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2314                 } else {
2315                         QETH_CARD_TEXT(card, 3, "-promisc");
2316                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2317                 }
2318         }
2319 }
2320
2321 static void qeth_l3_set_multicast_list(struct net_device *dev)
2322 {
2323         struct qeth_card *card = dev->ml_priv;
2324
2325         QETH_CARD_TEXT(card, 3, "setmulti");
2326         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2327             (card->state != CARD_STATE_UP))
2328                 return;
2329         if (!card->options.sniffer) {
2330                 qeth_l3_delete_mc_addresses(card);
2331                 qeth_l3_add_multicast_ipv4(card);
2332 #ifdef CONFIG_QETH_IPV6
2333                 qeth_l3_add_multicast_ipv6(card);
2334 #endif
2335                 qeth_l3_set_ip_addr_list(card);
2336                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2337                         return;
2338         }
2339         qeth_l3_handle_promisc_mode(card);
2340 }
2341
2342 static const char *qeth_l3_arp_get_error_cause(int *rc)
2343 {
2344         switch (*rc) {
2345         case QETH_IPA_ARP_RC_FAILED:
2346                 *rc = -EIO;
2347                 return "operation failed";
2348         case QETH_IPA_ARP_RC_NOTSUPP:
2349                 *rc = -EOPNOTSUPP;
2350                 return "operation not supported";
2351         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2352                 *rc = -EINVAL;
2353                 return "argument out of range";
2354         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2355                 *rc = -EOPNOTSUPP;
2356                 return "query operation not supported";
2357         case QETH_IPA_ARP_RC_Q_NO_DATA:
2358                 *rc = -ENOENT;
2359                 return "no query data available";
2360         default:
2361                 return "unknown error";
2362         }
2363 }
2364
2365 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2366 {
2367         int tmp;
2368         int rc;
2369
2370         QETH_CARD_TEXT(card, 3, "arpstnoe");
2371
2372         /*
2373          * currently GuestLAN only supports the ARP assist function
2374          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2375          * thus we say EOPNOTSUPP for this ARP function
2376          */
2377         if (card->info.guestlan)
2378                 return -EOPNOTSUPP;
2379         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2380                 return -EOPNOTSUPP;
2381         }
2382         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2383                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2384                                           no_entries);
2385         if (rc) {
2386                 tmp = rc;
2387                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2388                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2389                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2390         }
2391         return rc;
2392 }
2393
2394 static __u32 get_arp_entry_size(struct qeth_card *card,
2395                         struct qeth_arp_query_data *qdata,
2396                         struct qeth_arp_entrytype *type, __u8 strip_entries)
2397 {
2398         __u32 rc;
2399         __u8 is_hsi;
2400
2401         is_hsi = qdata->reply_bits == 5;
2402         if (type->ip == QETHARP_IP_ADDR_V4) {
2403                 QETH_CARD_TEXT(card, 4, "arpev4");
2404                 if (strip_entries) {
2405                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) :
2406                                 sizeof(struct qeth_arp_qi_entry7_short);
2407                 } else {
2408                         rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) :
2409                                 sizeof(struct qeth_arp_qi_entry7);
2410                 }
2411         } else if (type->ip == QETHARP_IP_ADDR_V6) {
2412                 QETH_CARD_TEXT(card, 4, "arpev6");
2413                 if (strip_entries) {
2414                         rc = is_hsi ?
2415                                 sizeof(struct qeth_arp_qi_entry5_short_ipv6) :
2416                                 sizeof(struct qeth_arp_qi_entry7_short_ipv6);
2417                 } else {
2418                         rc = is_hsi ?
2419                                 sizeof(struct qeth_arp_qi_entry5_ipv6) :
2420                                 sizeof(struct qeth_arp_qi_entry7_ipv6);
2421                 }
2422         } else {
2423                 QETH_CARD_TEXT(card, 4, "arpinv");
2424                 rc = 0;
2425         }
2426
2427         return rc;
2428 }
2429
2430 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot)
2431 {
2432         return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) ||
2433                 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6);
2434 }
2435
2436 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2437                 struct qeth_reply *reply, unsigned long data)
2438 {
2439         struct qeth_ipa_cmd *cmd;
2440         struct qeth_arp_query_data *qdata;
2441         struct qeth_arp_query_info *qinfo;
2442         int i;
2443         int e;
2444         int entrybytes_done;
2445         int stripped_bytes;
2446         __u8 do_strip_entries;
2447
2448         QETH_CARD_TEXT(card, 3, "arpquecb");
2449
2450         qinfo = (struct qeth_arp_query_info *) reply->param;
2451         cmd = (struct qeth_ipa_cmd *) data;
2452         QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version);
2453         if (cmd->hdr.return_code) {
2454                 QETH_CARD_TEXT(card, 4, "arpcberr");
2455                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2456                 return 0;
2457         }
2458         if (cmd->data.setassparms.hdr.return_code) {
2459                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2460                 QETH_CARD_TEXT(card, 4, "setaperr");
2461                 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code);
2462                 return 0;
2463         }
2464         qdata = &cmd->data.setassparms.data.query_arp;
2465         QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries);
2466
2467         do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0;
2468         stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0;
2469         entrybytes_done = 0;
2470         for (e = 0; e < qdata->no_entries; ++e) {
2471                 char *cur_entry;
2472                 __u32 esize;
2473                 struct qeth_arp_entrytype *etype;
2474
2475                 cur_entry = &qdata->data + entrybytes_done;
2476                 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type;
2477                 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) {
2478                         QETH_CARD_TEXT(card, 4, "pmis");
2479                         QETH_CARD_TEXT_(card, 4, "%i", etype->ip);
2480                         break;
2481                 }
2482                 esize = get_arp_entry_size(card, qdata, etype,
2483                         do_strip_entries);
2484                 QETH_CARD_TEXT_(card, 5, "esz%i", esize);
2485                 if (!esize)
2486                         break;
2487
2488                 if ((qinfo->udata_len - qinfo->udata_offset) < esize) {
2489                         QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM);
2490                         cmd->hdr.return_code = -ENOMEM;
2491                         goto out_error;
2492                 }
2493
2494                 memcpy(qinfo->udata + qinfo->udata_offset,
2495                         &qdata->data + entrybytes_done + stripped_bytes,
2496                         esize);
2497                 entrybytes_done += esize + stripped_bytes;
2498                 qinfo->udata_offset += esize;
2499                 ++qinfo->no_entries;
2500         }
2501         /* check if all replies received ... */
2502         if (cmd->data.setassparms.hdr.seq_no <
2503             cmd->data.setassparms.hdr.number_of_replies)
2504                 return 1;
2505         QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries);
2506         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2507         /* keep STRIP_ENTRIES flag so the user program can distinguish
2508          * stripped entries from normal ones */
2509         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2510                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2511         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2512         QETH_CARD_TEXT_(card, 4, "rc%i", 0);
2513         return 0;
2514 out_error:
2515         i = 0;
2516         memcpy(qinfo->udata, &i, 4);
2517         return 0;
2518 }
2519
2520 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2521                 struct qeth_cmd_buffer *iob, int len,
2522                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2523                         unsigned long),
2524                 void *reply_param)
2525 {
2526         QETH_CARD_TEXT(card, 4, "sendarp");
2527
2528         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2529         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2530                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2531         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2532                                       reply_cb, reply_param);
2533 }
2534
2535 static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
2536         enum qeth_prot_versions prot,
2537         struct qeth_arp_query_info *qinfo)
2538 {
2539         struct qeth_cmd_buffer *iob;
2540         struct qeth_ipa_cmd *cmd;
2541         int tmp;
2542         int rc;
2543
2544         QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot);
2545
2546         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2547                         IPA_CMD_ASS_ARP_QUERY_INFO,
2548                         sizeof(struct qeth_arp_query_data) - sizeof(char),
2549                         prot);
2550         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2551         cmd->data.setassparms.data.query_arp.request_bits = 0x000F;
2552         cmd->data.setassparms.data.query_arp.reply_bits = 0;
2553         cmd->data.setassparms.data.query_arp.no_entries = 0;
2554         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2555                            QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2556                            qeth_l3_arp_query_cb, (void *)qinfo);
2557         if (rc) {
2558                 tmp = rc;
2559                 QETH_DBF_MESSAGE(2,
2560                         "Error while querying ARP cache on %s: %s "
2561                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2562                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2563         }
2564
2565         return rc;
2566 }
2567
2568 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2569 {
2570         struct qeth_arp_query_info qinfo = {0, };
2571         int rc;
2572
2573         QETH_CARD_TEXT(card, 3, "arpquery");
2574
2575         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2576                                IPA_ARP_PROCESSING)) {
2577                 QETH_CARD_TEXT(card, 3, "arpqnsup");
2578                 rc = -EOPNOTSUPP;
2579                 goto out;
2580         }
2581         /* get size of userspace buffer and mask_bits -> 6 bytes */
2582         if (copy_from_user(&qinfo, udata, 6)) {
2583                 rc = -EFAULT;
2584                 goto out;
2585         }
2586         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2587         if (!qinfo.udata) {
2588                 rc = -ENOMEM;
2589                 goto out;
2590         }
2591         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2592         rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo);
2593         if (rc) {
2594                 if (copy_to_user(udata, qinfo.udata, 4))
2595                         rc = -EFAULT;
2596                         goto free_and_out;
2597         } else {
2598 #ifdef CONFIG_QETH_IPV6
2599                 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) {
2600                         /* fails in case of GuestLAN QDIO mode */
2601                         qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6,
2602                                 &qinfo);
2603                 }
2604 #endif
2605                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) {
2606                         QETH_CARD_TEXT(card, 4, "qactf");
2607                         rc = -EFAULT;
2608                         goto free_and_out;
2609                 }
2610                 QETH_CARD_TEXT_(card, 4, "qacts");
2611         }
2612 free_and_out:
2613         kfree(qinfo.udata);
2614 out:
2615         return rc;
2616 }
2617
2618 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2619                                 struct qeth_arp_cache_entry *entry)
2620 {
2621         struct qeth_cmd_buffer *iob;
2622         char buf[16];
2623         int tmp;
2624         int rc;
2625
2626         QETH_CARD_TEXT(card, 3, "arpadent");
2627
2628         /*
2629          * currently GuestLAN only supports the ARP assist function
2630          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2631          * thus we say EOPNOTSUPP for this ARP function
2632          */
2633         if (card->info.guestlan)
2634                 return -EOPNOTSUPP;
2635         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2636                 return -EOPNOTSUPP;
2637         }
2638
2639         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2640                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2641                                        sizeof(struct qeth_arp_cache_entry),
2642                                        QETH_PROT_IPV4);
2643         rc = qeth_l3_send_setassparms(card, iob,
2644                                    sizeof(struct qeth_arp_cache_entry),
2645                                    (unsigned long) entry,
2646                                    qeth_l3_default_setassparms_cb, NULL);
2647         if (rc) {
2648                 tmp = rc;
2649                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2650                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2651                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2652                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2653         }
2654         return rc;
2655 }
2656
2657 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2658                                 struct qeth_arp_cache_entry *entry)
2659 {
2660         struct qeth_cmd_buffer *iob;
2661         char buf[16] = {0, };
2662         int tmp;
2663         int rc;
2664
2665         QETH_CARD_TEXT(card, 3, "arprment");
2666
2667         /*
2668          * currently GuestLAN only supports the ARP assist function
2669          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2670          * thus we say EOPNOTSUPP for this ARP function
2671          */
2672         if (card->info.guestlan)
2673                 return -EOPNOTSUPP;
2674         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2675                 return -EOPNOTSUPP;
2676         }
2677         memcpy(buf, entry, 12);
2678         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2679                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2680                                        12,
2681                                        QETH_PROT_IPV4);
2682         rc = qeth_l3_send_setassparms(card, iob,
2683                                    12, (unsigned long)buf,
2684                                    qeth_l3_default_setassparms_cb, NULL);
2685         if (rc) {
2686                 tmp = rc;
2687                 memset(buf, 0, 16);
2688                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2689                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2690                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2691                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2692         }
2693         return rc;
2694 }
2695
2696 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2697 {
2698         int rc;
2699         int tmp;
2700
2701         QETH_CARD_TEXT(card, 3, "arpflush");
2702
2703         /*
2704          * currently GuestLAN only supports the ARP assist function
2705          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2706          * thus we say EOPNOTSUPP for this ARP function
2707         */
2708         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2709                 return -EOPNOTSUPP;
2710         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2711                 return -EOPNOTSUPP;
2712         }
2713         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2714                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2715         if (rc) {
2716                 tmp = rc;
2717                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2718                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2719                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2720         }
2721         return rc;
2722 }
2723
2724 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2725 {
2726         struct qeth_card *card = dev->ml_priv;
2727         struct qeth_arp_cache_entry arp_entry;
2728         struct mii_ioctl_data *mii_data;
2729         int rc = 0;
2730
2731         if (!card)
2732                 return -ENODEV;
2733
2734         if ((card->state != CARD_STATE_UP) &&
2735                 (card->state != CARD_STATE_SOFTSETUP))
2736                 return -ENODEV;
2737
2738         switch (cmd) {
2739         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2740                 if (!capable(CAP_NET_ADMIN)) {
2741                         rc = -EPERM;
2742                         break;
2743                 }
2744                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2745                 break;
2746         case SIOC_QETH_ARP_QUERY_INFO:
2747                 if (!capable(CAP_NET_ADMIN)) {
2748                         rc = -EPERM;
2749                         break;
2750                 }
2751                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2752                 break;
2753         case SIOC_QETH_ARP_ADD_ENTRY:
2754                 if (!capable(CAP_NET_ADMIN)) {
2755                         rc = -EPERM;
2756                         break;
2757                 }
2758                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2759                                    sizeof(struct qeth_arp_cache_entry)))
2760                         rc = -EFAULT;
2761                 else
2762                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2763                 break;
2764         case SIOC_QETH_ARP_REMOVE_ENTRY:
2765                 if (!capable(CAP_NET_ADMIN)) {
2766                         rc = -EPERM;
2767                         break;
2768                 }
2769                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2770                                    sizeof(struct qeth_arp_cache_entry)))
2771                         rc = -EFAULT;
2772                 else
2773                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2774                 break;
2775         case SIOC_QETH_ARP_FLUSH_CACHE:
2776                 if (!capable(CAP_NET_ADMIN)) {
2777                         rc = -EPERM;
2778                         break;
2779                 }
2780                 rc = qeth_l3_arp_flush_cache(card);
2781                 break;
2782         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2783                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2784                 break;
2785         case SIOC_QETH_GET_CARD_TYPE:
2786                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
2787                      card->info.type == QETH_CARD_TYPE_OSX) &&
2788                     !card->info.guestlan)
2789                         return 1;
2790                 return 0;
2791                 break;
2792         case SIOCGMIIPHY:
2793                 mii_data = if_mii(rq);
2794                 mii_data->phy_id = 0;
2795                 break;
2796         case SIOCGMIIREG:
2797                 mii_data = if_mii(rq);
2798                 if (mii_data->phy_id != 0)
2799                         rc = -EINVAL;
2800                 else
2801                         mii_data->val_out = qeth_mdio_read(dev,
2802                                                         mii_data->phy_id,
2803                                                         mii_data->reg_num);
2804                 break;
2805         default:
2806                 rc = -EOPNOTSUPP;
2807         }
2808         if (rc)
2809                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
2810         return rc;
2811 }
2812
2813 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2814 {
2815         int cast_type = RTN_UNSPEC;
2816
2817         if (skb_dst(skb) && skb_dst(skb)->neighbour) {
2818                 cast_type = skb_dst(skb)->neighbour->type;
2819                 if ((cast_type == RTN_BROADCAST) ||
2820                     (cast_type == RTN_MULTICAST) ||
2821                     (cast_type == RTN_ANYCAST))
2822                         return cast_type;
2823                 else
2824                         return RTN_UNSPEC;
2825         }
2826         /* try something else */
2827         if (skb->protocol == ETH_P_IPV6)
2828                 return (skb_network_header(skb)[24] == 0xff) ?
2829                                 RTN_MULTICAST : 0;
2830         else if (skb->protocol == ETH_P_IP)
2831                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2832                                 RTN_MULTICAST : 0;
2833         /* ... */
2834         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2835                 return RTN_BROADCAST;
2836         else {
2837                 u16 hdr_mac;
2838
2839                 hdr_mac = *((u16 *)skb->data);
2840                 /* tr multicast? */
2841                 switch (card->info.link_type) {
2842                 case QETH_LINK_TYPE_HSTR:
2843                 case QETH_LINK_TYPE_LANE_TR:
2844                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2845                             (hdr_mac == QETH_TR_MAC_C))
2846                                 return RTN_MULTICAST;
2847                         break;
2848                 /* eth or so multicast? */
2849                 default:
2850                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2851                             (hdr_mac == QETH_ETH_MAC_V6))
2852                                 return RTN_MULTICAST;
2853                 }
2854         }
2855         return cast_type;
2856 }
2857
2858 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2859                 struct sk_buff *skb, int ipv, int cast_type)
2860 {
2861         memset(hdr, 0, sizeof(struct qeth_hdr));
2862         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2863         hdr->hdr.l3.ext_flags = 0;
2864
2865         /*
2866          * before we're going to overwrite this location with next hop ip.
2867          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2868          */
2869         if (card->vlangrp && vlan_tx_tag_present(skb)) {
2870                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2871                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2872                 else
2873                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2874                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2875         }
2876
2877         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2878         if (ipv == 4) {
2879                 /* IPv4 */
2880                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2881                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2882                 if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
2883                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2884                             *((u32 *) skb_dst(skb)->neighbour->primary_key);
2885                 } else {
2886                         /* fill in destination address used in ip header */
2887                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2888                                                         ip_hdr(skb)->daddr;
2889                 }
2890         } else if (ipv == 6) {
2891                 /* IPv6 */
2892                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2893                 if (card->info.type == QETH_CARD_TYPE_IQD)
2894                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2895                 if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
2896                         memcpy(hdr->hdr.l3.dest_addr,
2897                                skb_dst(skb)->neighbour->primary_key, 16);
2898                 } else {
2899                         /* fill in destination address used in ip header */
2900                         memcpy(hdr->hdr.l3.dest_addr,
2901                                &ipv6_hdr(skb)->daddr, 16);
2902                 }
2903         } else {
2904                 /* passthrough */
2905                 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2906                         !memcmp(skb->data + sizeof(struct qeth_hdr) +
2907                         sizeof(__u16), skb->dev->broadcast, 6)) {
2908                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2909                                                 QETH_HDR_PASSTHRU;
2910                 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2911                             skb->dev->broadcast, 6)) {
2912                         /* broadcast? */
2913                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2914                                                 QETH_HDR_PASSTHRU;
2915                 } else {
2916                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2917                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2918                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2919                 }
2920         }
2921 }
2922
2923 static inline void qeth_l3_hdr_csum(struct qeth_card *card,
2924                 struct qeth_hdr *hdr, struct sk_buff *skb)
2925 {
2926         struct iphdr *iph = ip_hdr(skb);
2927
2928         /* tcph->check contains already the pseudo hdr checksum
2929          * so just set the header flags
2930          */
2931         if (iph->protocol == IPPROTO_UDP)
2932                 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP;
2933         hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
2934                 QETH_HDR_EXT_CSUM_HDR_REQ;
2935         iph->check = 0;
2936         if (card->options.performance_stats)
2937                 card->perf_stats.tx_csum++;
2938 }
2939
2940 static void qeth_tso_fill_header(struct qeth_card *card,
2941                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2942 {
2943         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2944         struct tcphdr *tcph = tcp_hdr(skb);
2945         struct iphdr *iph = ip_hdr(skb);
2946         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2947
2948         /*fix header to TSO values ...*/
2949         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2950         hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso);
2951         /*set values which are fix for the first approach ...*/
2952         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2953         hdr->ext.imb_hdr_no  = 1;
2954         hdr->ext.hdr_type    = 1;
2955         hdr->ext.hdr_version = 1;
2956         hdr->ext.hdr_len     = 28;
2957         /*insert non-fix values */
2958         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2959         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2960         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2961                                        sizeof(struct qeth_hdr_tso));
2962         tcph->check = 0;
2963         if (skb->protocol == ETH_P_IPV6) {
2964                 ip6h->payload_len = 0;
2965                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2966                                                0, IPPROTO_TCP, 0);
2967         } else {
2968                 /*OSA want us to set these values ...*/
2969                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2970                                          0, IPPROTO_TCP, 0);
2971                 iph->tot_len = 0;
2972                 iph->check = 0;
2973         }
2974 }
2975
2976 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2977 {
2978         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2979                 tcp_hdr(skb)->doff * 4;
2980         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2981         int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd);
2982         elements += skb_shinfo(skb)->nr_frags;
2983         return elements;
2984 }
2985
2986 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2987 {
2988         int rc;
2989         u16 *tag;
2990         struct qeth_hdr *hdr = NULL;
2991         int elements_needed = 0;
2992         int elems;
2993         struct qeth_card *card = dev->ml_priv;
2994         struct sk_buff *new_skb = NULL;
2995         int ipv = qeth_get_ip_version(skb);
2996         int cast_type = qeth_l3_get_cast_type(card, skb);
2997         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2998                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2999         int tx_bytes = skb->len;
3000         bool large_send;
3001         int data_offset = -1;
3002         int nr_frags;
3003
3004         if (((card->info.type == QETH_CARD_TYPE_IQD) && (!ipv)) ||
3005              card->options.sniffer)
3006                         goto tx_drop;
3007
3008         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
3009                 card->stats.tx_carrier_errors++;
3010                 goto tx_drop;
3011         }
3012
3013         if ((cast_type == RTN_BROADCAST) &&
3014             (card->info.broadcast_capable == 0))
3015                 goto tx_drop;
3016
3017         if (card->options.performance_stats) {
3018                 card->perf_stats.outbound_cnt++;
3019                 card->perf_stats.outbound_start_time = qeth_get_micros();
3020         }
3021
3022         large_send = skb_is_gso(skb);
3023
3024         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
3025             (skb_shinfo(skb)->nr_frags == 0)) {
3026                 new_skb = skb;
3027                 data_offset = ETH_HLEN;
3028                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3029                 if (!hdr)
3030                         goto tx_drop;
3031                 elements_needed++;
3032         } else {
3033                 /* create a clone with writeable headroom */
3034                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
3035                                         + VLAN_HLEN);
3036                 if (!new_skb)
3037                         goto tx_drop;
3038         }
3039
3040         if (card->info.type == QETH_CARD_TYPE_IQD) {
3041                 if (data_offset < 0)
3042                         skb_pull(new_skb, ETH_HLEN);
3043         } else {
3044                 if (ipv == 4) {
3045                         if (card->dev->type == ARPHRD_IEEE802_TR)
3046                                 skb_pull(new_skb, TR_HLEN);
3047                         else
3048                                 skb_pull(new_skb, ETH_HLEN);
3049                 }
3050
3051                 if (ipv != 4 && card->vlangrp &&
3052                                 vlan_tx_tag_present(new_skb)) {
3053                         skb_push(new_skb, VLAN_HLEN);
3054                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
3055                         skb_copy_to_linear_data_offset(new_skb, 4,
3056                                 new_skb->data + 8, 4);
3057                         skb_copy_to_linear_data_offset(new_skb, 8,
3058                                 new_skb->data + 12, 4);
3059                         tag = (u16 *)(new_skb->data + 12);
3060                         *tag = __constant_htons(ETH_P_8021Q);
3061                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
3062                         new_skb->vlan_tci = 0;
3063                 }
3064         }
3065
3066         netif_stop_queue(dev);
3067
3068         /* fix hardware limitation: as long as we do not have sbal
3069          * chaining we can not send long frag lists
3070          */
3071         if (large_send) {
3072                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
3073                         if (skb_linearize(new_skb))
3074                                 goto tx_drop;
3075                         if (card->options.performance_stats)
3076                                 card->perf_stats.tx_lin++;
3077                 }
3078         }
3079
3080         if (large_send && (cast_type == RTN_UNSPEC)) {
3081                 hdr = (struct qeth_hdr *)skb_push(new_skb,
3082                                                 sizeof(struct qeth_hdr_tso));
3083                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
3084                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
3085                 qeth_tso_fill_header(card, hdr, new_skb);
3086                 elements_needed++;
3087         } else {
3088                 if (data_offset < 0) {
3089                         hdr = (struct qeth_hdr *)skb_push(new_skb,
3090                                                 sizeof(struct qeth_hdr));
3091                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3092                                                 cast_type);
3093                 } else {
3094                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3095                                                 cast_type);
3096                         hdr->hdr.l3.length = new_skb->len - data_offset;
3097                 }
3098
3099                 if (skb->ip_summed == CHECKSUM_PARTIAL)
3100                         qeth_l3_hdr_csum(card, hdr, new_skb);
3101         }
3102
3103         elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3104                                                  elements_needed);
3105         if (!elems) {
3106                 if (data_offset >= 0)
3107                         kmem_cache_free(qeth_core_header_cache, hdr);
3108                 goto tx_drop;
3109         }
3110         elements_needed += elems;
3111         nr_frags = skb_shinfo(new_skb)->nr_frags;
3112
3113         if (card->info.type != QETH_CARD_TYPE_IQD) {
3114                 int len;
3115                 if (large_send)
3116                         len = ((unsigned long)tcp_hdr(new_skb) +
3117                                 tcp_hdr(new_skb)->doff * 4) -
3118                                 (unsigned long)new_skb->data;
3119                 else
3120                         len = sizeof(struct qeth_hdr_layer3);
3121
3122                 if (qeth_hdr_chk_and_bounce(new_skb, len))
3123                         goto tx_drop;
3124                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3125                                          elements_needed);
3126         } else
3127                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3128                                         elements_needed, data_offset, 0);
3129
3130         if (!rc) {
3131                 card->stats.tx_packets++;
3132                 card->stats.tx_bytes += tx_bytes;
3133                 if (new_skb != skb)
3134                         dev_kfree_skb_any(skb);
3135                 if (card->options.performance_stats) {
3136                         if (large_send) {
3137                                 card->perf_stats.large_send_bytes += tx_bytes;
3138                                 card->perf_stats.large_send_cnt++;
3139                         }
3140                         if (nr_frags) {
3141                                 card->perf_stats.sg_skbs_sent++;
3142                                 /* nr_frags + skb->data */
3143                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3144                         }
3145                 }
3146                 rc = NETDEV_TX_OK;
3147         } else {
3148                 if (data_offset >= 0)
3149                         kmem_cache_free(qeth_core_header_cache, hdr);
3150
3151                 if (rc == -EBUSY) {
3152                         if (new_skb != skb)
3153                                 dev_kfree_skb_any(new_skb);
3154                         return NETDEV_TX_BUSY;
3155                 } else
3156                         goto tx_drop;
3157         }
3158
3159         netif_wake_queue(dev);
3160         if (card->options.performance_stats)
3161                 card->perf_stats.outbound_time += qeth_get_micros() -
3162                         card->perf_stats.outbound_start_time;
3163         return rc;
3164
3165 tx_drop:
3166         card->stats.tx_dropped++;
3167         card->stats.tx_errors++;
3168         if ((new_skb != skb) && new_skb)
3169                 dev_kfree_skb_any(new_skb);
3170         dev_kfree_skb_any(skb);
3171         netif_wake_queue(dev);
3172         return NETDEV_TX_OK;
3173 }
3174
3175 static int __qeth_l3_open(struct net_device *dev)
3176 {
3177         struct qeth_card *card = dev->ml_priv;
3178         int rc = 0;
3179
3180         QETH_CARD_TEXT(card, 4, "qethopen");
3181         if (card->state == CARD_STATE_UP)
3182                 return rc;
3183         if (card->state != CARD_STATE_SOFTSETUP)
3184                 return -ENODEV;
3185         card->data.state = CH_STATE_UP;
3186         card->state = CARD_STATE_UP;
3187         netif_start_queue(dev);
3188
3189         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
3190                 napi_enable(&card->napi);
3191                 napi_schedule(&card->napi);
3192         } else
3193                 rc = -EIO;
3194         return rc;
3195 }
3196
3197 static int qeth_l3_open(struct net_device *dev)
3198 {
3199         struct qeth_card *card = dev->ml_priv;
3200
3201         QETH_CARD_TEXT(card, 5, "qethope_");
3202         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
3203                 QETH_CARD_TEXT(card, 3, "openREC");
3204                 return -ERESTARTSYS;
3205         }
3206         return __qeth_l3_open(dev);
3207 }
3208
3209 static int qeth_l3_stop(struct net_device *dev)
3210 {
3211         struct qeth_card *card = dev->ml_priv;
3212
3213         QETH_CARD_TEXT(card, 4, "qethstop");
3214         netif_tx_disable(dev);
3215         if (card->state == CARD_STATE_UP) {
3216                 card->state = CARD_STATE_SOFTSETUP;
3217                 napi_disable(&card->napi);
3218         }
3219         return 0;
3220 }
3221
3222 static u32 qeth_l3_fix_features(struct net_device *dev, u32 features)
3223 {
3224         struct qeth_card *card = dev->ml_priv;
3225
3226         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
3227                 features &= ~NETIF_F_IP_CSUM;
3228         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
3229                 features &= ~NETIF_F_TSO;
3230         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
3231                 features &= ~NETIF_F_RXCSUM;
3232
3233         return features;
3234 }
3235
3236 static int qeth_l3_set_features(struct net_device *dev, u32 features)
3237 {
3238         enum qeth_checksum_types csum_type;
3239         struct qeth_card *card = dev->ml_priv;
3240         u32 changed = dev->features ^ features;
3241
3242         if (!(changed & NETIF_F_RXCSUM))
3243                 return 0;
3244
3245         if (features & NETIF_F_RXCSUM)
3246                 csum_type = HW_CHECKSUMMING;
3247         else
3248                 csum_type = SW_CHECKSUMMING;
3249
3250         dev->features = features ^ NETIF_F_RXCSUM;
3251         return qeth_l3_set_rx_csum(card, csum_type);
3252 }
3253
3254 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3255         .get_link = ethtool_op_get_link,
3256         .get_strings = qeth_core_get_strings,
3257         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3258         .get_sset_count = qeth_core_get_sset_count,
3259         .get_drvinfo = qeth_core_get_drvinfo,
3260         .get_settings = qeth_core_ethtool_get_settings,
3261 };
3262
3263 /*
3264  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3265  * NOARP on the netdevice is no option because it also turns off neighbor
3266  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3267  * arp resolution but we want the hard header (packet socket will work
3268  * e.g. tcpdump)
3269  */
3270 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3271 {
3272         n->nud_state = NUD_NOARP;
3273         memcpy(n->ha, "FAKELL", 6);
3274         n->output = n->ops->connected_output;
3275         return 0;
3276 }
3277
3278 static int
3279 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3280 {
3281         if (np->tbl->family == AF_INET)
3282                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3283
3284         return 0;
3285 }
3286
3287 static const struct net_device_ops qeth_l3_netdev_ops = {
3288         .ndo_open               = qeth_l3_open,
3289         .ndo_stop               = qeth_l3_stop,
3290         .ndo_get_stats          = qeth_get_stats,
3291         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3292         .ndo_validate_addr      = eth_validate_addr,
3293         .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3294         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3295         .ndo_change_mtu         = qeth_change_mtu,
3296         .ndo_fix_features       = qeth_l3_fix_features,
3297         .ndo_set_features       = qeth_l3_set_features,
3298         .ndo_vlan_rx_register   = qeth_l3_vlan_rx_register,
3299         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3300         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3301         .ndo_tx_timeout         = qeth_tx_timeout,
3302 };
3303
3304 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3305         .ndo_open               = qeth_l3_open,
3306         .ndo_stop               = qeth_l3_stop,
3307         .ndo_get_stats          = qeth_get_stats,
3308         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3309         .ndo_validate_addr      = eth_validate_addr,
3310         .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3311         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3312         .ndo_change_mtu         = qeth_change_mtu,
3313         .ndo_fix_features       = qeth_l3_fix_features,
3314         .ndo_set_features       = qeth_l3_set_features,
3315         .ndo_vlan_rx_register   = qeth_l3_vlan_rx_register,
3316         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3317         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3318         .ndo_tx_timeout         = qeth_tx_timeout,
3319         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3320 };
3321
3322 static int qeth_l3_setup_netdev(struct qeth_card *card)
3323 {
3324         if (card->info.type == QETH_CARD_TYPE_OSD ||
3325             card->info.type == QETH_CARD_TYPE_OSX) {
3326                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3327                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3328 #ifdef CONFIG_TR
3329                         card->dev = alloc_trdev(0);
3330 #endif
3331                         if (!card->dev)
3332                                 return -ENODEV;
3333                         card->dev->netdev_ops = &qeth_l3_netdev_ops;
3334                 } else {
3335                         card->dev = alloc_etherdev(0);
3336                         if (!card->dev)
3337                                 return -ENODEV;
3338                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3339
3340                         /*IPv6 address autoconfiguration stuff*/
3341                         qeth_l3_get_unique_id(card);
3342                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3343                                 card->dev->dev_id = card->info.unique_id &
3344                                                          0xffff;
3345                 }
3346         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3347                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3348                 if (!card->dev)
3349                         return -ENODEV;
3350                 card->dev->flags |= IFF_NOARP;
3351                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3352                 qeth_l3_iqd_read_initial_mac(card);
3353         } else
3354                 return -ENODEV;
3355
3356         card->dev->ml_priv = card;
3357         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3358         card->dev->mtu = card->info.initial_mtu;
3359         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3360         card->dev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
3361                 NETIF_F_IP_CSUM | NETIF_F_TSO;
3362         card->dev->features |=  NETIF_F_HW_VLAN_TX |
3363                                 NETIF_F_HW_VLAN_RX |
3364                                 NETIF_F_HW_VLAN_FILTER;
3365         card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3366         card->dev->gso_max_size = 15 * PAGE_SIZE;
3367
3368         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3369         netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT);
3370         return register_netdev(card->dev);
3371 }
3372
3373 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3374 {
3375         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3376
3377         qeth_l3_create_device_attributes(&gdev->dev);
3378         card->options.layer2 = 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         if ((card->info.type == QETH_CARD_TYPE_OSD) ||
3386             (card->info.type == QETH_CARD_TYPE_OSX))
3387                 card->options.checksum_type = HW_CHECKSUMMING;
3388         return 0;
3389 }
3390
3391 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3392 {
3393         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3394
3395         qeth_l3_remove_device_attributes(&cgdev->dev);
3396
3397         qeth_set_allowed_threads(card, 0, 1);
3398         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3399
3400         if (cgdev->state == CCWGROUP_ONLINE)
3401                 qeth_l3_set_offline(cgdev);
3402
3403         if (card->dev) {
3404                 unregister_netdev(card->dev);
3405                 card->dev = NULL;
3406         }
3407
3408         qeth_l3_clear_ip_list(card, 0);
3409         qeth_l3_clear_ipato_list(card);
3410         return;
3411 }
3412
3413 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3414 {
3415         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3416         int rc = 0;
3417         enum qeth_card_states recover_flag;
3418
3419         BUG_ON(!card);
3420         mutex_lock(&card->discipline_mutex);
3421         mutex_lock(&card->conf_mutex);
3422         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3423         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3424
3425         recover_flag = card->state;
3426         rc = qeth_core_hardsetup_card(card);
3427         if (rc) {
3428                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3429                 rc = -ENODEV;
3430                 goto out_remove;
3431         }
3432
3433         qeth_l3_query_ipassists(card, QETH_PROT_IPV4);
3434
3435         if (!card->dev && qeth_l3_setup_netdev(card)) {
3436                 rc = -ENODEV;
3437                 goto out_remove;
3438         }
3439
3440         card->state = CARD_STATE_HARDSETUP;
3441         memset(&card->rx, 0, sizeof(struct qeth_rx));
3442         qeth_print_status_message(card);
3443
3444         /* softsetup */
3445         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3446
3447         rc = qeth_send_startlan(card);
3448         if (rc) {
3449                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3450                 if (rc == 0xe080) {
3451                         dev_warn(&card->gdev->dev,
3452                                 "The LAN is offline\n");
3453                         card->lan_online = 0;
3454                         goto contin;
3455                 }
3456                 rc = -ENODEV;
3457                 goto out_remove;
3458         } else
3459                 card->lan_online = 1;
3460
3461 contin:
3462         rc = qeth_l3_setadapter_parms(card);
3463         if (rc)
3464                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3465         if (!card->options.sniffer) {
3466                 rc = qeth_l3_start_ipassists(card);
3467                 if (rc)
3468                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3469                 rc = qeth_l3_setrouting_v4(card);
3470                 if (rc)
3471                         QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3472                 rc = qeth_l3_setrouting_v6(card);
3473                 if (rc)
3474                         QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3475         }
3476         netif_tx_disable(card->dev);
3477
3478         rc = qeth_init_qdio_queues(card);
3479         if (rc) {
3480                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3481                 rc = -ENODEV;
3482                 goto out_remove;
3483         }
3484         card->state = CARD_STATE_SOFTSETUP;
3485
3486         qeth_set_allowed_threads(card, 0xffffffff, 0);
3487         qeth_l3_set_ip_addr_list(card);
3488         if (card->lan_online)
3489                 netif_carrier_on(card->dev);
3490         else
3491                 netif_carrier_off(card->dev);
3492         if (recover_flag == CARD_STATE_RECOVER) {
3493                 if (recovery_mode)
3494                         __qeth_l3_open(card->dev);
3495                 else {
3496                         rtnl_lock();
3497                         dev_open(card->dev);
3498                         rtnl_unlock();
3499                 }
3500                 qeth_l3_set_multicast_list(card->dev);
3501         }
3502         /* let user_space know that device is online */
3503         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3504         mutex_unlock(&card->conf_mutex);
3505         mutex_unlock(&card->discipline_mutex);
3506         return 0;
3507 out_remove:
3508         qeth_l3_stop_card(card, 0);
3509         ccw_device_set_offline(CARD_DDEV(card));
3510         ccw_device_set_offline(CARD_WDEV(card));
3511         ccw_device_set_offline(CARD_RDEV(card));
3512         if (recover_flag == CARD_STATE_RECOVER)
3513                 card->state = CARD_STATE_RECOVER;
3514         else
3515                 card->state = CARD_STATE_DOWN;
3516         mutex_unlock(&card->conf_mutex);
3517         mutex_unlock(&card->discipline_mutex);
3518         return rc;
3519 }
3520
3521 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3522 {
3523         return __qeth_l3_set_online(gdev, 0);
3524 }
3525
3526 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3527                         int recovery_mode)
3528 {
3529         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3530         int rc = 0, rc2 = 0, rc3 = 0;
3531         enum qeth_card_states recover_flag;
3532
3533         mutex_lock(&card->discipline_mutex);
3534         mutex_lock(&card->conf_mutex);
3535         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3536         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3537
3538         if (card->dev && netif_carrier_ok(card->dev))
3539                 netif_carrier_off(card->dev);
3540         recover_flag = card->state;
3541         qeth_l3_stop_card(card, recovery_mode);
3542         rc  = ccw_device_set_offline(CARD_DDEV(card));
3543         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3544         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3545         if (!rc)
3546                 rc = (rc2) ? rc2 : rc3;
3547         if (rc)
3548                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3549         if (recover_flag == CARD_STATE_UP)
3550                 card->state = CARD_STATE_RECOVER;
3551         /* let user_space know that device is offline */
3552         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3553         mutex_unlock(&card->conf_mutex);
3554         mutex_unlock(&card->discipline_mutex);
3555         return 0;
3556 }
3557
3558 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3559 {
3560         return __qeth_l3_set_offline(cgdev, 0);
3561 }
3562
3563 static int qeth_l3_recover(void *ptr)
3564 {
3565         struct qeth_card *card;
3566         int rc = 0;
3567
3568         card = (struct qeth_card *) ptr;
3569         QETH_CARD_TEXT(card, 2, "recover1");
3570         QETH_CARD_HEX(card, 2, &card, sizeof(void *));
3571         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3572                 return 0;
3573         QETH_CARD_TEXT(card, 2, "recover2");
3574         dev_warn(&card->gdev->dev,
3575                 "A recovery process has been started for the device\n");
3576         __qeth_l3_set_offline(card->gdev, 1);
3577         rc = __qeth_l3_set_online(card->gdev, 1);
3578         if (!rc)
3579                 dev_info(&card->gdev->dev,
3580                         "Device successfully recovered!\n");
3581         else {
3582                 rtnl_lock();
3583                 dev_close(card->dev);
3584                 rtnl_unlock();
3585                 dev_warn(&card->gdev->dev, "The qeth device driver "
3586                         "failed to recover an error on the device\n");
3587         }
3588         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3589         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3590         return 0;
3591 }
3592
3593 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3594 {
3595         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3596         qeth_qdio_clear_card(card, 0);
3597         qeth_clear_qdio_buffers(card);
3598 }
3599
3600 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3601 {
3602         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3603
3604         if (card->dev)
3605                 netif_device_detach(card->dev);
3606         qeth_set_allowed_threads(card, 0, 1);
3607         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3608         if (gdev->state == CCWGROUP_OFFLINE)
3609                 return 0;
3610         if (card->state == CARD_STATE_UP) {
3611                 __qeth_l3_set_offline(card->gdev, 1);
3612         } else
3613                 __qeth_l3_set_offline(card->gdev, 0);
3614         return 0;
3615 }
3616
3617 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3618 {
3619         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3620         int rc = 0;
3621
3622         if (gdev->state == CCWGROUP_OFFLINE)
3623                 goto out;
3624
3625         if (card->state == CARD_STATE_RECOVER) {
3626                 rc = __qeth_l3_set_online(card->gdev, 1);
3627                 if (rc) {
3628                         rtnl_lock();
3629                         dev_close(card->dev);
3630                         rtnl_unlock();
3631                 }
3632         } else
3633                 rc = __qeth_l3_set_online(card->gdev, 0);
3634 out:
3635         qeth_set_allowed_threads(card, 0xffffffff, 0);
3636         if (card->dev)
3637                 netif_device_attach(card->dev);
3638         if (rc)
3639                 dev_warn(&card->gdev->dev, "The qeth device driver "
3640                         "failed to recover an error on the device\n");
3641         return rc;
3642 }
3643
3644 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3645         .probe = qeth_l3_probe_device,
3646         .remove = qeth_l3_remove_device,
3647         .set_online = qeth_l3_set_online,
3648         .set_offline = qeth_l3_set_offline,
3649         .shutdown = qeth_l3_shutdown,
3650         .freeze = qeth_l3_pm_suspend,
3651         .thaw = qeth_l3_pm_resume,
3652         .restore = qeth_l3_pm_resume,
3653 };
3654 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3655
3656 static int qeth_l3_ip_event(struct notifier_block *this,
3657                             unsigned long event, void *ptr)
3658 {
3659         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3660         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3661         struct qeth_ipaddr *addr;
3662         struct qeth_card *card;
3663
3664         if (dev_net(dev) != &init_net)
3665                 return NOTIFY_DONE;
3666
3667         card = qeth_l3_get_card_from_dev(dev);
3668         QETH_CARD_TEXT(card, 3, "ipevent");
3669         if (!card)
3670                 return NOTIFY_DONE;
3671
3672         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3673         if (addr != NULL) {
3674                 addr->u.a4.addr = ifa->ifa_address;
3675                 addr->u.a4.mask = ifa->ifa_mask;
3676                 addr->type = QETH_IP_TYPE_NORMAL;
3677         } else
3678                 goto out;
3679
3680         switch (event) {
3681         case NETDEV_UP:
3682                 if (!qeth_l3_add_ip(card, addr))
3683                         kfree(addr);
3684                 break;
3685         case NETDEV_DOWN:
3686                 if (!qeth_l3_delete_ip(card, addr))
3687                         kfree(addr);
3688                 break;
3689         default:
3690                 break;
3691         }
3692         qeth_l3_set_ip_addr_list(card);
3693 out:
3694         return NOTIFY_DONE;
3695 }
3696
3697 static struct notifier_block qeth_l3_ip_notifier = {
3698         qeth_l3_ip_event,
3699         NULL,
3700 };
3701
3702 #ifdef CONFIG_QETH_IPV6
3703 /**
3704  * IPv6 event handler
3705  */
3706 static int qeth_l3_ip6_event(struct notifier_block *this,
3707                              unsigned long event, void *ptr)
3708 {
3709         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3710         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3711         struct qeth_ipaddr *addr;
3712         struct qeth_card *card;
3713
3714
3715         card = qeth_l3_get_card_from_dev(dev);
3716         if (!card)
3717                 return NOTIFY_DONE;
3718         QETH_CARD_TEXT(card, 3, "ip6event");
3719         if (!qeth_is_supported(card, IPA_IPV6))
3720                 return NOTIFY_DONE;
3721
3722         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3723         if (addr != NULL) {
3724                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3725                 addr->u.a6.pfxlen = ifa->prefix_len;
3726                 addr->type = QETH_IP_TYPE_NORMAL;
3727         } else
3728                 goto out;
3729
3730         switch (event) {
3731         case NETDEV_UP:
3732                 if (!qeth_l3_add_ip(card, addr))
3733                         kfree(addr);
3734                 break;
3735         case NETDEV_DOWN:
3736                 if (!qeth_l3_delete_ip(card, addr))
3737                         kfree(addr);
3738                 break;
3739         default:
3740                 break;
3741         }
3742         qeth_l3_set_ip_addr_list(card);
3743 out:
3744         return NOTIFY_DONE;
3745 }
3746
3747 static struct notifier_block qeth_l3_ip6_notifier = {
3748         qeth_l3_ip6_event,
3749         NULL,
3750 };
3751 #endif
3752
3753 static int qeth_l3_register_notifiers(void)
3754 {
3755         int rc;
3756
3757         QETH_DBF_TEXT(SETUP, 5, "regnotif");
3758         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3759         if (rc)
3760                 return rc;
3761 #ifdef CONFIG_QETH_IPV6
3762         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3763         if (rc) {
3764                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3765                 return rc;
3766         }
3767 #else
3768         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3769 #endif
3770         return 0;
3771 }
3772
3773 static void qeth_l3_unregister_notifiers(void)
3774 {
3775
3776         QETH_DBF_TEXT(SETUP, 5, "unregnot");
3777         BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3778 #ifdef CONFIG_QETH_IPV6
3779         BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3780 #endif /* QETH_IPV6 */
3781 }
3782
3783 static int __init qeth_l3_init(void)
3784 {
3785         int rc = 0;
3786
3787         pr_info("register layer 3 discipline\n");
3788         rc = qeth_l3_register_notifiers();
3789         return rc;
3790 }
3791
3792 static void __exit qeth_l3_exit(void)
3793 {
3794         qeth_l3_unregister_notifiers();
3795         pr_info("unregister layer 3 discipline\n");
3796 }
3797
3798 module_init(qeth_l3_init);
3799 module_exit(qeth_l3_exit);
3800 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3801 MODULE_DESCRIPTION("qeth layer 3 discipline");
3802 MODULE_LICENSE("GPL");