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
  26 #include <net/ip.h>
  27 #include <net/arp.h>
  28 #include <net/ip6_checksum.h>
  29
  30 #include "qeth_l3.h"
  31
  32 static int qeth_l3_set_offline(struct ccwgroup_device *);
  33 static int qeth_l3_recover(void *);
  34 static int qeth_l3_stop(struct net_device *);
  35 static void qeth_l3_set_multicast_list(struct net_device *);
  36 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *);
  37 static int qeth_l3_register_addr_entry(struct qeth_card *,
  38                 struct qeth_ipaddr *);
  39 static int qeth_l3_deregister_addr_entry(struct qeth_card *,
  40                 struct qeth_ipaddr *);
  41 static int __qeth_l3_set_online(struct ccwgroup_device *, int);
  42 static int __qeth_l3_set_offline(struct ccwgroup_device *, int);
  43
  44 int qeth_l3_set_large_send(struct qeth_card *card,
  45                 enum qeth_large_send_types type)
  46 {
  47         int rc = 0;
  48
  49         card->options.large_send = type;
  50         if (card->dev == NULL)
  51                 return 0;
  52
  53         if (card->options.large_send == QETH_LARGE_SEND_TSO) {
  54                 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
  55                         card->dev->features |= NETIF_F_TSO | NETIF_F_SG |
  56                                         NETIF_F_HW_CSUM;
  57                 } else {
  58                         card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
  59                                         NETIF_F_HW_CSUM);
  60                         card->options.large_send = QETH_LARGE_SEND_NO;
  61                         rc = -EOPNOTSUPP;
  62                 }
  63         } else {
  64                 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG |
  65                                         NETIF_F_HW_CSUM);
  66                 card->options.large_send = QETH_LARGE_SEND_NO;
  67         }
  68         return rc;
  69 }
  70
  71 static int qeth_l3_isxdigit(char *buf)
  72 {
  73         while (*buf) {
  74                 if (!isxdigit(*buf++))
  75                         return 0;
  76         }
  77         return 1;
  78 }
  79
  80 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf)
  81 {
  82         sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]);
  83 }
  84
  85 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr)
  86 {
  87         int count = 0, rc = 0;
  88         int in[4];
  89         char c;
  90
  91         rc = sscanf(buf, "%u.%u.%u.%u%c",
  92                     &in[0], &in[1], &in[2], &in[3], &c);
  93         if (rc != 4 && (rc != 5 || c != '\n'))
  94                 return -EINVAL;
  95         for (count = 0; count < 4; count++) {
  96                 if (in[count] > 255)
  97                         return -EINVAL;
  98                 addr[count] = in[count];
  99         }
 100         return 0;
 101 }
 102
 103 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf)
 104 {
 105         sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x"
 106                      ":%02x%02x:%02x%02x:%02x%02x:%02x%02x",
 107                      addr[0], addr[1], addr[2], addr[3],
 108                      addr[4], addr[5], addr[6], addr[7],
 109                      addr[8], addr[9], addr[10], addr[11],
 110                      addr[12], addr[13], addr[14], addr[15]);
 111 }
 112
 113 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr)
 114 {
 115         const char *end, *end_tmp, *start;
 116         __u16 *in;
 117         char num[5];
 118         int num2, cnt, out, found, save_cnt;
 119         unsigned short in_tmp[8] = {0, };
 120
 121         cnt = out = found = save_cnt = num2 = 0;
 122         end = start = buf;
 123         in = (__u16 *) addr;
 124         memset(in, 0, 16);
 125         while (*end) {
 126                 end = strchr(start, ':');
 127                 if (end == NULL) {
 128                         end = buf + strlen(buf);
 129                         end_tmp = strchr(start, '\n');
 130                         if (end_tmp != NULL)
 131                                 end = end_tmp;
 132                         out = 1;
 133                 }
 134                 if ((end - start)) {
 135                         memset(num, 0, 5);
 136                         if ((end - start) > 4)
 137                                 return -EINVAL;
 138                         memcpy(num, start, end - start);
 139                         if (!qeth_l3_isxdigit(num))
 140                                 return -EINVAL;
 141                         sscanf(start, "%x", &num2);
 142                         if (found)
 143                                 in_tmp[save_cnt++] = num2;
 144                         else
 145                                 in[cnt++] = num2;
 146                         if (out)
 147                                 break;
 148                 } else {
 149                         if (found)
 150                                 return -EINVAL;
 151                         found = 1;
 152                 }
 153                 start = ++end;
 154         }
 155         if (cnt + save_cnt > 8)
 156                 return -EINVAL;
 157         cnt = 7;
 158         while (save_cnt)
 159                 in[cnt--] = in_tmp[--save_cnt];
 160         return 0;
 161 }
 162
 163 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr,
 164                                 char *buf)
 165 {
 166         if (proto == QETH_PROT_IPV4)
 167                 qeth_l3_ipaddr4_to_string(addr, buf);
 168         else if (proto == QETH_PROT_IPV6)
 169                 qeth_l3_ipaddr6_to_string(addr, buf);
 170 }
 171
 172 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto,
 173                                 __u8 *addr)
 174 {
 175         if (proto == QETH_PROT_IPV4)
 176                 return qeth_l3_string_to_ipaddr4(buf, addr);
 177         else if (proto == QETH_PROT_IPV6)
 178                 return qeth_l3_string_to_ipaddr6(buf, addr);
 179         else
 180                 return -EINVAL;
 181 }
 182
 183 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len)
 184 {
 185         int i, j;
 186         u8 octet;
 187
 188         for (i = 0; i < len; ++i) {
 189                 octet = addr[i];
 190                 for (j = 7; j >= 0; --j) {
 191                         bits[i*8 + j] = octet & 1;
 192                         octet >>= 1;
 193                 }
 194         }
 195 }
 196
 197 static int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card,
 198                                                 struct qeth_ipaddr *addr)
 199 {
 200         struct qeth_ipato_entry *ipatoe;
 201         u8 addr_bits[128] = {0, };
 202         u8 ipatoe_bits[128] = {0, };
 203         int rc = 0;
 204
 205         if (!card->ipato.enabled)
 206                 return 0;
 207
 208         qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits,
 209                                   (addr->proto == QETH_PROT_IPV4)? 4:16);
 210         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 211                 if (addr->proto != ipatoe->proto)
 212                         continue;
 213                 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits,
 214                                           (ipatoe->proto == QETH_PROT_IPV4) ?
 215                                           4 : 16);
 216                 if (addr->proto == QETH_PROT_IPV4)
 217                         rc = !memcmp(addr_bits, ipatoe_bits,
 218                                      min(32, ipatoe->mask_bits));
 219                 else
 220                         rc = !memcmp(addr_bits, ipatoe_bits,
 221                                      min(128, ipatoe->mask_bits));
 222                 if (rc)
 223                         break;
 224         }
 225         /* invert? */
 226         if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4)
 227                 rc = !rc;
 228         else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6)
 229                 rc = !rc;
 230
 231         return rc;
 232 }
 233
 234 /*
 235  * Add IP to be added to todo list. If there is already an "add todo"
 236  * in this list we just incremenent the reference count.
 237  * Returns 0 if we  just incremented reference count.
 238  */
 239 static int __qeth_l3_insert_ip_todo(struct qeth_card *card,
 240                                         struct qeth_ipaddr *addr, int add)
 241 {
 242         struct qeth_ipaddr *tmp, *t;
 243         int found = 0;
 244
 245         if (card->options.sniffer)
 246                 return 0;
 247         list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) {
 248                 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) &&
 249                     (tmp->type == QETH_IP_TYPE_DEL_ALL_MC))
 250                         return 0;
 251                 if ((tmp->proto        == QETH_PROT_IPV4)     &&
 252                     (addr->proto       == QETH_PROT_IPV4)     &&
 253                     (tmp->type         == addr->type)         &&
 254                     (tmp->is_multicast == addr->is_multicast) &&
 255                     (tmp->u.a4.addr    == addr->u.a4.addr)    &&
 256                     (tmp->u.a4.mask    == addr->u.a4.mask)) {
 257                         found = 1;
 258                         break;
 259                 }
 260                 if ((tmp->proto        == QETH_PROT_IPV6)      &&
 261                     (addr->proto       == QETH_PROT_IPV6)      &&
 262                     (tmp->type         == addr->type)          &&
 263                     (tmp->is_multicast == addr->is_multicast)  &&
 264                     (tmp->u.a6.pfxlen  == addr->u.a6.pfxlen)   &&
 265                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 266                             sizeof(struct in6_addr)) == 0)) {
 267                         found = 1;
 268                         break;
 269                 }
 270         }
 271         if (found) {
 272                 if (addr->users != 0)
 273                         tmp->users += addr->users;
 274                 else
 275                         tmp->users += add ? 1 : -1;
 276                 if (tmp->users == 0) {
 277                         list_del(&tmp->entry);
 278                         kfree(tmp);
 279                 }
 280                 return 0;
 281         } else {
 282                 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC)
 283                         list_add(&addr->entry, card->ip_tbd_list);
 284                 else {
 285                         if (addr->users == 0)
 286                                 addr->users += add ? 1 : -1;
 287                         if (add && (addr->type == QETH_IP_TYPE_NORMAL) &&
 288                             qeth_l3_is_addr_covered_by_ipato(card, addr)) {
 289                                 QETH_DBF_TEXT(TRACE, 2, "tkovaddr");
 290                                 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG;
 291                         }
 292                         list_add_tail(&addr->entry, card->ip_tbd_list);
 293                 }
 294                 return 1;
 295         }
 296 }
 297
 298 static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 299 {
 300         unsigned long flags;
 301         int rc = 0;
 302
 303         QETH_DBF_TEXT(TRACE, 4, "delip");
 304
 305         if (addr->proto == QETH_PROT_IPV4)
 306                 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
 307         else {
 308                 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
 309                 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 310         }
 311         spin_lock_irqsave(&card->ip_lock, flags);
 312         rc = __qeth_l3_insert_ip_todo(card, addr, 0);
 313         spin_unlock_irqrestore(&card->ip_lock, flags);
 314         return rc;
 315 }
 316
 317 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr)
 318 {
 319         unsigned long flags;
 320         int rc = 0;
 321
 322         QETH_DBF_TEXT(TRACE, 4, "addip");
 323         if (addr->proto == QETH_PROT_IPV4)
 324                 QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4);
 325         else {
 326                 QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8);
 327                 QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8);
 328         }
 329         spin_lock_irqsave(&card->ip_lock, flags);
 330         rc = __qeth_l3_insert_ip_todo(card, addr, 1);
 331         spin_unlock_irqrestore(&card->ip_lock, flags);
 332         return rc;
 333 }
 334
 335
 336 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(
 337                                 enum qeth_prot_versions prot)
 338 {
 339         struct qeth_ipaddr *addr;
 340
 341         addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC);
 342         if (addr == NULL) {
 343                 return NULL;
 344         }
 345         addr->type = QETH_IP_TYPE_NORMAL;
 346         addr->proto = prot;
 347         return addr;
 348 }
 349
 350 static void qeth_l3_delete_mc_addresses(struct qeth_card *card)
 351 {
 352         struct qeth_ipaddr *iptodo;
 353         unsigned long flags;
 354
 355         QETH_DBF_TEXT(TRACE, 4, "delmc");
 356         iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
 357         if (!iptodo) {
 358                 QETH_DBF_TEXT(TRACE, 2, "dmcnomem");
 359                 return;
 360         }
 361         iptodo->type = QETH_IP_TYPE_DEL_ALL_MC;
 362         spin_lock_irqsave(&card->ip_lock, flags);
 363         if (!__qeth_l3_insert_ip_todo(card, iptodo, 0))
 364                 kfree(iptodo);
 365         spin_unlock_irqrestore(&card->ip_lock, flags);
 366 }
 367
 368 /*
 369  * Add/remove address to/from card's ip list, i.e. try to add or remove
 370  * reference to/from an IP address that is already registered on the card.
 371  * Returns:
 372  *      0  address was on card and its reference count has been adjusted,
 373  *         but is still > 0, so nothing has to be done
 374  *         also returns 0 if card was not on card and the todo was to delete
 375  *         the address -> there is also nothing to be done
 376  *      1  address was not on card and the todo is to add it to the card's ip
 377  *         list
 378  *      -1 address was on card and its reference count has been decremented
 379  *         to <= 0 by the todo -> address must be removed from card
 380  */
 381 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card,
 382                 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr)
 383 {
 384         struct qeth_ipaddr *addr;
 385         int found = 0;
 386
 387         list_for_each_entry(addr, &card->ip_list, entry) {
 388                 if ((addr->proto == QETH_PROT_IPV4) &&
 389                     (todo->proto == QETH_PROT_IPV4) &&
 390                     (addr->type == todo->type) &&
 391                     (addr->u.a4.addr == todo->u.a4.addr) &&
 392                     (addr->u.a4.mask == todo->u.a4.mask)) {
 393                         found = 1;
 394                         break;
 395                 }
 396                 if ((addr->proto == QETH_PROT_IPV6) &&
 397                     (todo->proto == QETH_PROT_IPV6) &&
 398                     (addr->type == todo->type) &&
 399                     (addr->u.a6.pfxlen == todo->u.a6.pfxlen) &&
 400                     (memcmp(&addr->u.a6.addr, &todo->u.a6.addr,
 401                             sizeof(struct in6_addr)) == 0)) {
 402                         found = 1;
 403                         break;
 404                 }
 405         }
 406         if (found) {
 407                 addr->users += todo->users;
 408                 if (addr->users <= 0) {
 409                         *__addr = addr;
 410                         return -1;
 411                 } else {
 412                         /* for VIPA and RXIP limit refcount to 1 */
 413                         if (addr->type != QETH_IP_TYPE_NORMAL)
 414                                 addr->users = 1;
 415                         return 0;
 416                 }
 417         }
 418         if (todo->users > 0) {
 419                 /* for VIPA and RXIP limit refcount to 1 */
 420                 if (todo->type != QETH_IP_TYPE_NORMAL)
 421                         todo->users = 1;
 422                 return 1;
 423         } else
 424                 return 0;
 425 }
 426
 427 static void __qeth_l3_delete_all_mc(struct qeth_card *card,
 428                                         unsigned long *flags)
 429 {
 430         struct list_head fail_list;
 431         struct qeth_ipaddr *addr, *tmp;
 432         int rc;
 433
 434         INIT_LIST_HEAD(&fail_list);
 435 again:
 436         list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) {
 437                 if (addr->is_multicast) {
 438                         list_del(&addr->entry);
 439                         spin_unlock_irqrestore(&card->ip_lock, *flags);
 440                         rc = qeth_l3_deregister_addr_entry(card, addr);
 441                         spin_lock_irqsave(&card->ip_lock, *flags);
 442                         if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND))
 443                                 kfree(addr);
 444                         else
 445                                 list_add_tail(&addr->entry, &fail_list);
 446                         goto again;
 447                 }
 448         }
 449         list_splice(&fail_list, &card->ip_list);
 450 }
 451
 452 static void qeth_l3_set_ip_addr_list(struct qeth_card *card)
 453 {
 454         struct list_head *tbd_list;
 455         struct qeth_ipaddr *todo, *addr;
 456         unsigned long flags;
 457         int rc;
 458
 459         QETH_DBF_TEXT(TRACE, 2, "sdiplist");
 460         QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
 461
 462         if (card->options.sniffer)
 463                 return;
 464         spin_lock_irqsave(&card->ip_lock, flags);
 465         tbd_list = card->ip_tbd_list;
 466         card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC);
 467         if (!card->ip_tbd_list) {
 468                 QETH_DBF_TEXT(TRACE, 0, "silnomem");
 469                 card->ip_tbd_list = tbd_list;
 470                 spin_unlock_irqrestore(&card->ip_lock, flags);
 471                 return;
 472         } else
 473                 INIT_LIST_HEAD(card->ip_tbd_list);
 474
 475         while (!list_empty(tbd_list)) {
 476                 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry);
 477                 list_del(&todo->entry);
 478                 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) {
 479                         __qeth_l3_delete_all_mc(card, &flags);
 480                         kfree(todo);
 481                         continue;
 482                 }
 483                 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr);
 484                 if (rc == 0) {
 485                         /* nothing to be done; only adjusted refcount */
 486                         kfree(todo);
 487                 } else if (rc == 1) {
 488                         /* new entry to be added to on-card list */
 489                         spin_unlock_irqrestore(&card->ip_lock, flags);
 490                         rc = qeth_l3_register_addr_entry(card, todo);
 491                         spin_lock_irqsave(&card->ip_lock, flags);
 492                         if (!rc || (rc == IPA_RC_LAN_OFFLINE))
 493                                 list_add_tail(&todo->entry, &card->ip_list);
 494                         else
 495                                 kfree(todo);
 496                 } else if (rc == -1) {
 497                         /* on-card entry to be removed */
 498                         list_del_init(&addr->entry);
 499                         spin_unlock_irqrestore(&card->ip_lock, flags);
 500                         rc = qeth_l3_deregister_addr_entry(card, addr);
 501                         spin_lock_irqsave(&card->ip_lock, flags);
 502                         if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED))
 503                                 kfree(addr);
 504                         else
 505                                 list_add_tail(&addr->entry, &card->ip_list);
 506                         kfree(todo);
 507                 }
 508         }
 509         spin_unlock_irqrestore(&card->ip_lock, flags);
 510         kfree(tbd_list);
 511 }
 512
 513 static void qeth_l3_clear_ip_list(struct qeth_card *card, int clean,
 514                                         int recover)
 515 {
 516         struct qeth_ipaddr *addr, *tmp;
 517         unsigned long flags;
 518
 519         QETH_DBF_TEXT(TRACE, 4, "clearip");
 520         if (recover && card->options.sniffer)
 521                 return;
 522         spin_lock_irqsave(&card->ip_lock, flags);
 523         /* clear todo list */
 524         list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) {
 525                 list_del(&addr->entry);
 526                 kfree(addr);
 527         }
 528
 529         while (!list_empty(&card->ip_list)) {
 530                 addr = list_entry(card->ip_list.next,
 531                                   struct qeth_ipaddr, entry);
 532                 list_del_init(&addr->entry);
 533                 if (clean) {
 534                         spin_unlock_irqrestore(&card->ip_lock, flags);
 535                         qeth_l3_deregister_addr_entry(card, addr);
 536                         spin_lock_irqsave(&card->ip_lock, flags);
 537                 }
 538                 if (!recover || addr->is_multicast) {
 539                         kfree(addr);
 540                         continue;
 541                 }
 542                 list_add_tail(&addr->entry, card->ip_tbd_list);
 543         }
 544         spin_unlock_irqrestore(&card->ip_lock, flags);
 545 }
 546
 547 static int qeth_l3_address_exists_in_list(struct list_head *list,
 548                 struct qeth_ipaddr *addr, int same_type)
 549 {
 550         struct qeth_ipaddr *tmp;
 551
 552         list_for_each_entry(tmp, list, entry) {
 553                 if ((tmp->proto == QETH_PROT_IPV4) &&
 554                     (addr->proto == QETH_PROT_IPV4) &&
 555                     ((same_type && (tmp->type == addr->type)) ||
 556                     (!same_type && (tmp->type != addr->type))) &&
 557                     (tmp->u.a4.addr == addr->u.a4.addr))
 558                         return 1;
 559
 560                 if ((tmp->proto == QETH_PROT_IPV6) &&
 561                     (addr->proto == QETH_PROT_IPV6) &&
 562                     ((same_type && (tmp->type == addr->type)) ||
 563                     (!same_type && (tmp->type != addr->type))) &&
 564                     (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr,
 565                             sizeof(struct in6_addr)) == 0))
 566                         return 1;
 567
 568         }
 569         return 0;
 570 }
 571
 572 static int qeth_l3_send_setdelmc(struct qeth_card *card,
 573                         struct qeth_ipaddr *addr, int ipacmd)
 574 {
 575         int rc;
 576         struct qeth_cmd_buffer *iob;
 577         struct qeth_ipa_cmd *cmd;
 578
 579         QETH_DBF_TEXT(TRACE, 4, "setdelmc");
 580
 581         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 582         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 583         memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN);
 584         if (addr->proto == QETH_PROT_IPV6)
 585                 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr,
 586                        sizeof(struct in6_addr));
 587         else
 588                 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4);
 589
 590         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 591
 592         return rc;
 593 }
 594
 595 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len)
 596 {
 597         int i, j;
 598         for (i = 0; i < 16; i++) {
 599                 j = (len) - (i * 8);
 600                 if (j >= 8)
 601                         netmask[i] = 0xff;
 602                 else if (j > 0)
 603                         netmask[i] = (u8)(0xFF00 >> j);
 604                 else
 605                         netmask[i] = 0;
 606         }
 607 }
 608
 609 static int qeth_l3_send_setdelip(struct qeth_card *card,
 610                 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags)
 611 {
 612         int rc;
 613         struct qeth_cmd_buffer *iob;
 614         struct qeth_ipa_cmd *cmd;
 615         __u8 netmask[16];
 616
 617         QETH_DBF_TEXT(TRACE, 4, "setdelip");
 618         QETH_DBF_TEXT_(TRACE, 4, "flags%02X", flags);
 619
 620         iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto);
 621         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 622         if (addr->proto == QETH_PROT_IPV6) {
 623                 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr,
 624                        sizeof(struct in6_addr));
 625                 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen);
 626                 memcpy(cmd->data.setdelip6.mask, netmask,
 627                        sizeof(struct in6_addr));
 628                 cmd->data.setdelip6.flags = flags;
 629         } else {
 630                 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4);
 631                 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4);
 632                 cmd->data.setdelip4.flags = flags;
 633         }
 634
 635         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 636
 637         return rc;
 638 }
 639
 640 static int qeth_l3_send_setrouting(struct qeth_card *card,
 641         enum qeth_routing_types type, enum qeth_prot_versions prot)
 642 {
 643         int rc;
 644         struct qeth_ipa_cmd *cmd;
 645         struct qeth_cmd_buffer *iob;
 646
 647         QETH_DBF_TEXT(TRACE, 4, "setroutg");
 648         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot);
 649         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 650         cmd->data.setrtg.type = (type);
 651         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
 652
 653         return rc;
 654 }
 655
 656 static void qeth_l3_correct_routing_type(struct qeth_card *card,
 657                 enum qeth_routing_types *type, enum qeth_prot_versions prot)
 658 {
 659         if (card->info.type == QETH_CARD_TYPE_IQD) {
 660                 switch (*type) {
 661                 case NO_ROUTER:
 662                 case PRIMARY_CONNECTOR:
 663                 case SECONDARY_CONNECTOR:
 664                 case MULTICAST_ROUTER:
 665                         return;
 666                 default:
 667                         goto out_inval;
 668                 }
 669         } else {
 670                 switch (*type) {
 671                 case NO_ROUTER:
 672                 case PRIMARY_ROUTER:
 673                 case SECONDARY_ROUTER:
 674                         return;
 675                 case MULTICAST_ROUTER:
 676                         if (qeth_is_ipafunc_supported(card, prot,
 677                                                       IPA_OSA_MC_ROUTER))
 678                                 return;
 679                 default:
 680                         goto out_inval;
 681                 }
 682         }
 683 out_inval:
 684         *type = NO_ROUTER;
 685 }
 686
 687 int qeth_l3_setrouting_v4(struct qeth_card *card)
 688 {
 689         int rc;
 690
 691         QETH_DBF_TEXT(TRACE, 3, "setrtg4");
 692
 693         qeth_l3_correct_routing_type(card, &card->options.route4.type,
 694                                   QETH_PROT_IPV4);
 695
 696         rc = qeth_l3_send_setrouting(card, card->options.route4.type,
 697                                   QETH_PROT_IPV4);
 698         if (rc) {
 699                 card->options.route4.type = NO_ROUTER;
 700                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 701                         " on %s. Type set to 'no router'.\n", rc,
 702                         QETH_CARD_IFNAME(card));
 703         }
 704         return rc;
 705 }
 706
 707 int qeth_l3_setrouting_v6(struct qeth_card *card)
 708 {
 709         int rc = 0;
 710
 711         QETH_DBF_TEXT(TRACE, 3, "setrtg6");
 712 #ifdef CONFIG_QETH_IPV6
 713
 714         if (!qeth_is_supported(card, IPA_IPV6))
 715                 return 0;
 716         qeth_l3_correct_routing_type(card, &card->options.route6.type,
 717                                   QETH_PROT_IPV6);
 718
 719         rc = qeth_l3_send_setrouting(card, card->options.route6.type,
 720                                   QETH_PROT_IPV6);
 721         if (rc) {
 722                 card->options.route6.type = NO_ROUTER;
 723                 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type"
 724                         " on %s. Type set to 'no router'.\n", rc,
 725                         QETH_CARD_IFNAME(card));
 726         }
 727 #endif
 728         return rc;
 729 }
 730
 731 /*
 732  * IP address takeover related functions
 733  */
 734 static void qeth_l3_clear_ipato_list(struct qeth_card *card)
 735 {
 736
 737         struct qeth_ipato_entry *ipatoe, *tmp;
 738         unsigned long flags;
 739
 740         spin_lock_irqsave(&card->ip_lock, flags);
 741         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 742                 list_del(&ipatoe->entry);
 743                 kfree(ipatoe);
 744         }
 745         spin_unlock_irqrestore(&card->ip_lock, flags);
 746 }
 747
 748 int qeth_l3_add_ipato_entry(struct qeth_card *card,
 749                                 struct qeth_ipato_entry *new)
 750 {
 751         struct qeth_ipato_entry *ipatoe;
 752         unsigned long flags;
 753         int rc = 0;
 754
 755         QETH_DBF_TEXT(TRACE, 2, "addipato");
 756         spin_lock_irqsave(&card->ip_lock, flags);
 757         list_for_each_entry(ipatoe, &card->ipato.entries, entry) {
 758                 if (ipatoe->proto != new->proto)
 759                         continue;
 760                 if (!memcmp(ipatoe->addr, new->addr,
 761                             (ipatoe->proto == QETH_PROT_IPV4)? 4:16) &&
 762                     (ipatoe->mask_bits == new->mask_bits)) {
 763                         rc = -EEXIST;
 764                         break;
 765                 }
 766         }
 767         if (!rc)
 768                 list_add_tail(&new->entry, &card->ipato.entries);
 769
 770         spin_unlock_irqrestore(&card->ip_lock, flags);
 771         return rc;
 772 }
 773
 774 void qeth_l3_del_ipato_entry(struct qeth_card *card,
 775                 enum qeth_prot_versions proto, u8 *addr, int mask_bits)
 776 {
 777         struct qeth_ipato_entry *ipatoe, *tmp;
 778         unsigned long flags;
 779
 780         QETH_DBF_TEXT(TRACE, 2, "delipato");
 781         spin_lock_irqsave(&card->ip_lock, flags);
 782         list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) {
 783                 if (ipatoe->proto != proto)
 784                         continue;
 785                 if (!memcmp(ipatoe->addr, addr,
 786                             (proto == QETH_PROT_IPV4)? 4:16) &&
 787                     (ipatoe->mask_bits == mask_bits)) {
 788                         list_del(&ipatoe->entry);
 789                         kfree(ipatoe);
 790                 }
 791         }
 792         spin_unlock_irqrestore(&card->ip_lock, flags);
 793 }
 794
 795 /*
 796  * VIPA related functions
 797  */
 798 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 799               const u8 *addr)
 800 {
 801         struct qeth_ipaddr *ipaddr;
 802         unsigned long flags;
 803         int rc = 0;
 804
 805         ipaddr = qeth_l3_get_addr_buffer(proto);
 806         if (ipaddr) {
 807                 if (proto == QETH_PROT_IPV4) {
 808                         QETH_DBF_TEXT(TRACE, 2, "addvipa4");
 809                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 810                         ipaddr->u.a4.mask = 0;
 811                 } else if (proto == QETH_PROT_IPV6) {
 812                         QETH_DBF_TEXT(TRACE, 2, "addvipa6");
 813                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 814                         ipaddr->u.a6.pfxlen = 0;
 815                 }
 816                 ipaddr->type = QETH_IP_TYPE_VIPA;
 817                 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG;
 818                 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG;
 819         } else
 820                 return -ENOMEM;
 821         spin_lock_irqsave(&card->ip_lock, flags);
 822         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 823             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 824                 rc = -EEXIST;
 825         spin_unlock_irqrestore(&card->ip_lock, flags);
 826         if (rc) {
 827                 return rc;
 828         }
 829         if (!qeth_l3_add_ip(card, ipaddr))
 830                 kfree(ipaddr);
 831         qeth_l3_set_ip_addr_list(card);
 832         return rc;
 833 }
 834
 835 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto,
 836               const u8 *addr)
 837 {
 838         struct qeth_ipaddr *ipaddr;
 839
 840         ipaddr = qeth_l3_get_addr_buffer(proto);
 841         if (ipaddr) {
 842                 if (proto == QETH_PROT_IPV4) {
 843                         QETH_DBF_TEXT(TRACE, 2, "delvipa4");
 844                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 845                         ipaddr->u.a4.mask = 0;
 846                 } else if (proto == QETH_PROT_IPV6) {
 847                         QETH_DBF_TEXT(TRACE, 2, "delvipa6");
 848                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 849                         ipaddr->u.a6.pfxlen = 0;
 850                 }
 851                 ipaddr->type = QETH_IP_TYPE_VIPA;
 852         } else
 853                 return;
 854         if (!qeth_l3_delete_ip(card, ipaddr))
 855                 kfree(ipaddr);
 856         qeth_l3_set_ip_addr_list(card);
 857 }
 858
 859 /*
 860  * proxy ARP related functions
 861  */
 862 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 863               const u8 *addr)
 864 {
 865         struct qeth_ipaddr *ipaddr;
 866         unsigned long flags;
 867         int rc = 0;
 868
 869         ipaddr = qeth_l3_get_addr_buffer(proto);
 870         if (ipaddr) {
 871                 if (proto == QETH_PROT_IPV4) {
 872                         QETH_DBF_TEXT(TRACE, 2, "addrxip4");
 873                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 874                         ipaddr->u.a4.mask = 0;
 875                 } else if (proto == QETH_PROT_IPV6) {
 876                         QETH_DBF_TEXT(TRACE, 2, "addrxip6");
 877                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 878                         ipaddr->u.a6.pfxlen = 0;
 879                 }
 880                 ipaddr->type = QETH_IP_TYPE_RXIP;
 881                 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG;
 882                 ipaddr->del_flags = 0;
 883         } else
 884                 return -ENOMEM;
 885         spin_lock_irqsave(&card->ip_lock, flags);
 886         if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) ||
 887             qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0))
 888                 rc = -EEXIST;
 889         spin_unlock_irqrestore(&card->ip_lock, flags);
 890         if (rc) {
 891                 return rc;
 892         }
 893         if (!qeth_l3_add_ip(card, ipaddr))
 894                 kfree(ipaddr);
 895         qeth_l3_set_ip_addr_list(card);
 896         return 0;
 897 }
 898
 899 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto,
 900                         const u8 *addr)
 901 {
 902         struct qeth_ipaddr *ipaddr;
 903
 904         ipaddr = qeth_l3_get_addr_buffer(proto);
 905         if (ipaddr) {
 906                 if (proto == QETH_PROT_IPV4) {
 907                         QETH_DBF_TEXT(TRACE, 2, "addrxip4");
 908                         memcpy(&ipaddr->u.a4.addr, addr, 4);
 909                         ipaddr->u.a4.mask = 0;
 910                 } else if (proto == QETH_PROT_IPV6) {
 911                         QETH_DBF_TEXT(TRACE, 2, "addrxip6");
 912                         memcpy(&ipaddr->u.a6.addr, addr, 16);
 913                         ipaddr->u.a6.pfxlen = 0;
 914                 }
 915                 ipaddr->type = QETH_IP_TYPE_RXIP;
 916         } else
 917                 return;
 918         if (!qeth_l3_delete_ip(card, ipaddr))
 919                 kfree(ipaddr);
 920         qeth_l3_set_ip_addr_list(card);
 921 }
 922
 923 static int qeth_l3_register_addr_entry(struct qeth_card *card,
 924                                 struct qeth_ipaddr *addr)
 925 {
 926         char buf[50];
 927         int rc = 0;
 928         int cnt = 3;
 929
 930         if (addr->proto == QETH_PROT_IPV4) {
 931                 QETH_DBF_TEXT(TRACE, 2, "setaddr4");
 932                 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
 933         } else if (addr->proto == QETH_PROT_IPV6) {
 934                 QETH_DBF_TEXT(TRACE, 2, "setaddr6");
 935                 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
 936                 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 937         } else {
 938                 QETH_DBF_TEXT(TRACE, 2, "setaddr?");
 939                 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
 940         }
 941         do {
 942                 if (addr->is_multicast)
 943                         rc =  qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM);
 944                 else
 945                         rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP,
 946                                         addr->set_flags);
 947                 if (rc)
 948                         QETH_DBF_TEXT(TRACE, 2, "failed");
 949         } while ((--cnt > 0) && rc);
 950         if (rc) {
 951                 QETH_DBF_TEXT(TRACE, 2, "FAILED");
 952                 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf);
 953                 dev_warn(&card->gdev->dev,
 954                         "Registering IP address %s failed\n", buf);
 955         }
 956         return rc;
 957 }
 958
 959 static int qeth_l3_deregister_addr_entry(struct qeth_card *card,
 960                                                 struct qeth_ipaddr *addr)
 961 {
 962         int rc = 0;
 963
 964         if (addr->proto == QETH_PROT_IPV4) {
 965                 QETH_DBF_TEXT(TRACE, 2, "deladdr4");
 966                 QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int));
 967         } else if (addr->proto == QETH_PROT_IPV6) {
 968                 QETH_DBF_TEXT(TRACE, 2, "deladdr6");
 969                 QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8);
 970                 QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8);
 971         } else {
 972                 QETH_DBF_TEXT(TRACE, 2, "deladdr?");
 973                 QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr));
 974         }
 975         if (addr->is_multicast)
 976                 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM);
 977         else
 978                 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP,
 979                                         addr->del_flags);
 980         if (rc)
 981                 QETH_DBF_TEXT(TRACE, 2, "failed");
 982
 983         return rc;
 984 }
 985
 986 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type)
 987 {
 988         if (cast_type == RTN_MULTICAST)
 989                 return QETH_CAST_MULTICAST;
 990         if (cast_type == RTN_BROADCAST)
 991                 return QETH_CAST_BROADCAST;
 992         return QETH_CAST_UNICAST;
 993 }
 994
 995 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type)
 996 {
 997         u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6;
 998         if (cast_type == RTN_MULTICAST)
 999                 return ct | QETH_CAST_MULTICAST;
1000         if (cast_type == RTN_ANYCAST)
1001                 return ct | QETH_CAST_ANYCAST;
1002         if (cast_type == RTN_BROADCAST)
1003                 return ct | QETH_CAST_BROADCAST;
1004         return ct | QETH_CAST_UNICAST;
1005 }
1006
1007 static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command,
1008                                         __u32 mode)
1009 {
1010         int rc;
1011         struct qeth_cmd_buffer *iob;
1012         struct qeth_ipa_cmd *cmd;
1013
1014         QETH_DBF_TEXT(TRACE, 4, "adpmode");
1015
1016         iob = qeth_get_adapter_cmd(card, command,
1017                                    sizeof(struct qeth_ipacmd_setadpparms));
1018         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1019         cmd->data.setadapterparms.data.mode = mode;
1020         rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb,
1021                                NULL);
1022         return rc;
1023 }
1024
1025 static int qeth_l3_setadapter_hstr(struct qeth_card *card)
1026 {
1027         int rc;
1028
1029         QETH_DBF_TEXT(TRACE, 4, "adphstr");
1030
1031         if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) {
1032                 rc = qeth_l3_send_setadp_mode(card,
1033                                         IPA_SETADP_SET_BROADCAST_MODE,
1034                                         card->options.broadcast_mode);
1035                 if (rc)
1036                         QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on "
1037                                    "device %s: x%x\n",
1038                                    CARD_BUS_ID(card), rc);
1039                 rc = qeth_l3_send_setadp_mode(card,
1040                                         IPA_SETADP_ALTER_MAC_ADDRESS,
1041                                         card->options.macaddr_mode);
1042                 if (rc)
1043                         QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on "
1044                                    "device %s: x%x\n", CARD_BUS_ID(card), rc);
1045                 return rc;
1046         }
1047         if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL)
1048                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1049                            "to set broadcast mode, using ALLRINGS "
1050                            "on device %s:\n", CARD_BUS_ID(card));
1051         if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL)
1052                 QETH_DBF_MESSAGE(2, "set adapter parameters not available "
1053                            "to set macaddr mode, using NONCANONICAL "
1054                            "on device %s:\n", CARD_BUS_ID(card));
1055         return 0;
1056 }
1057
1058 static int qeth_l3_setadapter_parms(struct qeth_card *card)
1059 {
1060         int rc;
1061
1062         QETH_DBF_TEXT(SETUP, 2, "setadprm");
1063
1064         if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
1065                 dev_info(&card->gdev->dev,
1066                         "set adapter parameters not supported.\n");
1067                 QETH_DBF_TEXT(SETUP, 2, " notsupp");
1068                 return 0;
1069         }
1070         rc = qeth_query_setadapterparms(card);
1071         if (rc) {
1072                 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: "
1073                         "0x%x\n", dev_name(&card->gdev->dev), rc);
1074                 return rc;
1075         }
1076         if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) {
1077                 rc = qeth_setadpparms_change_macaddr(card);
1078                 if (rc)
1079                         dev_warn(&card->gdev->dev, "Reading the adapter MAC"
1080                                 " address failed\n");
1081         }
1082
1083         if ((card->info.link_type == QETH_LINK_TYPE_HSTR) ||
1084             (card->info.link_type == QETH_LINK_TYPE_LANE_TR))
1085                 rc = qeth_l3_setadapter_hstr(card);
1086
1087         return rc;
1088 }
1089
1090 static int qeth_l3_default_setassparms_cb(struct qeth_card *card,
1091                         struct qeth_reply *reply, unsigned long data)
1092 {
1093         struct qeth_ipa_cmd *cmd;
1094
1095         QETH_DBF_TEXT(TRACE, 4, "defadpcb");
1096
1097         cmd = (struct qeth_ipa_cmd *) data;
1098         if (cmd->hdr.return_code == 0) {
1099                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
1100                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
1101                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1102                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
1103                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1104         }
1105         if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM &&
1106             cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
1107                 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit;
1108                 QETH_DBF_TEXT_(TRACE, 3, "csum:%d", card->info.csum_mask);
1109         }
1110         return 0;
1111 }
1112
1113 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd(
1114         struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code,
1115         __u16 len, enum qeth_prot_versions prot)
1116 {
1117         struct qeth_cmd_buffer *iob;
1118         struct qeth_ipa_cmd *cmd;
1119
1120         QETH_DBF_TEXT(TRACE, 4, "getasscm");
1121         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
1122
1123         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1124         cmd->data.setassparms.hdr.assist_no = ipa_func;
1125         cmd->data.setassparms.hdr.length = 8 + len;
1126         cmd->data.setassparms.hdr.command_code = cmd_code;
1127         cmd->data.setassparms.hdr.return_code = 0;
1128         cmd->data.setassparms.hdr.seq_no = 0;
1129
1130         return iob;
1131 }
1132
1133 static int qeth_l3_send_setassparms(struct qeth_card *card,
1134         struct qeth_cmd_buffer *iob, __u16 len, long data,
1135         int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
1136                 unsigned long),
1137         void *reply_param)
1138 {
1139         int rc;
1140         struct qeth_ipa_cmd *cmd;
1141
1142         QETH_DBF_TEXT(TRACE, 4, "sendassp");
1143
1144         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1145         if (len <= sizeof(__u32))
1146                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
1147         else   /* (len > sizeof(__u32)) */
1148                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
1149
1150         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
1151         return rc;
1152 }
1153
1154 #ifdef CONFIG_QETH_IPV6
1155 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card,
1156                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code)
1157 {
1158         int rc;
1159         struct qeth_cmd_buffer *iob;
1160
1161         QETH_DBF_TEXT(TRACE, 4, "simassp6");
1162         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1163                                        0, QETH_PROT_IPV6);
1164         rc = qeth_l3_send_setassparms(card, iob, 0, 0,
1165                                    qeth_l3_default_setassparms_cb, NULL);
1166         return rc;
1167 }
1168 #endif
1169
1170 static int qeth_l3_send_simple_setassparms(struct qeth_card *card,
1171                 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data)
1172 {
1173         int rc;
1174         int length = 0;
1175         struct qeth_cmd_buffer *iob;
1176
1177         QETH_DBF_TEXT(TRACE, 4, "simassp4");
1178         if (data)
1179                 length = sizeof(__u32);
1180         iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code,
1181                                        length, QETH_PROT_IPV4);
1182         rc = qeth_l3_send_setassparms(card, iob, length, data,
1183                                    qeth_l3_default_setassparms_cb, NULL);
1184         return rc;
1185 }
1186
1187 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card)
1188 {
1189         int rc;
1190
1191         QETH_DBF_TEXT(TRACE, 3, "ipaarp");
1192
1193         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
1194                 dev_info(&card->gdev->dev,
1195                         "ARP processing not supported on %s!\n",
1196                         QETH_CARD_IFNAME(card));
1197                 return 0;
1198         }
1199         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
1200                                         IPA_CMD_ASS_START, 0);
1201         if (rc) {
1202                 dev_warn(&card->gdev->dev,
1203                         "Starting ARP processing support for %s failed\n",
1204                         QETH_CARD_IFNAME(card));
1205         }
1206         return rc;
1207 }
1208
1209 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card)
1210 {
1211         int rc;
1212
1213         QETH_DBF_TEXT(TRACE, 3, "ipaipfrg");
1214
1215         if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) {
1216                 dev_info(&card->gdev->dev,
1217                         "Hardware IP fragmentation not supported on %s\n",
1218                         QETH_CARD_IFNAME(card));
1219                 return  -EOPNOTSUPP;
1220         }
1221
1222         rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION,
1223                                           IPA_CMD_ASS_START, 0);
1224         if (rc) {
1225                 dev_warn(&card->gdev->dev,
1226                         "Starting IP fragmentation support for %s failed\n",
1227                         QETH_CARD_IFNAME(card));
1228         } else
1229                 dev_info(&card->gdev->dev,
1230                         "Hardware IP fragmentation enabled \n");
1231         return rc;
1232 }
1233
1234 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card)
1235 {
1236         int rc;
1237
1238         QETH_DBF_TEXT(TRACE, 3, "stsrcmac");
1239
1240         if (!qeth_is_supported(card, IPA_SOURCE_MAC)) {
1241                 dev_info(&card->gdev->dev,
1242                         "Inbound source MAC-address not supported on %s\n",
1243                         QETH_CARD_IFNAME(card));
1244                 return -EOPNOTSUPP;
1245         }
1246
1247         rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC,
1248                                           IPA_CMD_ASS_START, 0);
1249         if (rc)
1250                 dev_warn(&card->gdev->dev,
1251                         "Starting source MAC-address support for %s failed\n",
1252                         QETH_CARD_IFNAME(card));
1253         return rc;
1254 }
1255
1256 static int qeth_l3_start_ipa_vlan(struct qeth_card *card)
1257 {
1258         int rc = 0;
1259
1260         QETH_DBF_TEXT(TRACE, 3, "strtvlan");
1261
1262         if (!qeth_is_supported(card, IPA_FULL_VLAN)) {
1263                 dev_info(&card->gdev->dev,
1264                         "VLAN not supported on %s\n", QETH_CARD_IFNAME(card));
1265                 return -EOPNOTSUPP;
1266         }
1267
1268         rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO,
1269                                           IPA_CMD_ASS_START, 0);
1270         if (rc) {
1271                 dev_warn(&card->gdev->dev,
1272                         "Starting VLAN support for %s failed\n",
1273                         QETH_CARD_IFNAME(card));
1274         } else {
1275                 dev_info(&card->gdev->dev, "VLAN enabled\n");
1276         }
1277         return rc;
1278 }
1279
1280 static int qeth_l3_start_ipa_multicast(struct qeth_card *card)
1281 {
1282         int rc;
1283
1284         QETH_DBF_TEXT(TRACE, 3, "stmcast");
1285
1286         if (!qeth_is_supported(card, IPA_MULTICASTING)) {
1287                 dev_info(&card->gdev->dev,
1288                         "Multicast not supported on %s\n",
1289                         QETH_CARD_IFNAME(card));
1290                 return -EOPNOTSUPP;
1291         }
1292
1293         rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING,
1294                                           IPA_CMD_ASS_START, 0);
1295         if (rc) {
1296                 dev_warn(&card->gdev->dev,
1297                         "Starting multicast support for %s failed\n",
1298                         QETH_CARD_IFNAME(card));
1299         } else {
1300                 dev_info(&card->gdev->dev, "Multicast enabled\n");
1301                 card->dev->flags |= IFF_MULTICAST;
1302         }
1303         return rc;
1304 }
1305
1306 static int qeth_l3_query_ipassists_cb(struct qeth_card *card,
1307                 struct qeth_reply *reply, unsigned long data)
1308 {
1309         struct qeth_ipa_cmd *cmd;
1310
1311         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
1312
1313         cmd = (struct qeth_ipa_cmd *) data;
1314         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
1315                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
1316                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
1317         } else {
1318                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
1319                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
1320         }
1321         QETH_DBF_TEXT(SETUP, 2, "suppenbl");
1322         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
1323         QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
1324         return 0;
1325 }
1326
1327 static int qeth_l3_query_ipassists(struct qeth_card *card,
1328                                 enum qeth_prot_versions prot)
1329 {
1330         int rc;
1331         struct qeth_cmd_buffer *iob;
1332
1333         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
1334         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
1335         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL);
1336         return rc;
1337 }
1338
1339 #ifdef CONFIG_QETH_IPV6
1340 static int qeth_l3_softsetup_ipv6(struct qeth_card *card)
1341 {
1342         int rc;
1343
1344         QETH_DBF_TEXT(TRACE, 3, "softipv6");
1345
1346         if (card->info.type == QETH_CARD_TYPE_IQD)
1347                 goto out;
1348
1349         rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6);
1350         if (rc) {
1351                 dev_err(&card->gdev->dev,
1352                         "Activating IPv6 support for %s failed\n",
1353                         QETH_CARD_IFNAME(card));
1354                 return rc;
1355         }
1356         rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6,
1357                                           IPA_CMD_ASS_START, 3);
1358         if (rc) {
1359                 dev_err(&card->gdev->dev,
1360                         "Activating IPv6 support for %s failed\n",
1361                         QETH_CARD_IFNAME(card));
1362                 return rc;
1363         }
1364         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6,
1365                                                IPA_CMD_ASS_START);
1366         if (rc) {
1367                 dev_err(&card->gdev->dev,
1368                         "Activating IPv6 support for %s failed\n",
1369                          QETH_CARD_IFNAME(card));
1370                 return rc;
1371         }
1372         rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU,
1373                                                IPA_CMD_ASS_START);
1374         if (rc) {
1375                 dev_warn(&card->gdev->dev,
1376                         "Enabling the passthrough mode for %s failed\n",
1377                         QETH_CARD_IFNAME(card));
1378                 return rc;
1379         }
1380 out:
1381         dev_info(&card->gdev->dev, "IPV6 enabled\n");
1382         return 0;
1383 }
1384 #endif
1385
1386 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card)
1387 {
1388         int rc = 0;
1389
1390         QETH_DBF_TEXT(TRACE, 3, "strtipv6");
1391
1392         if (!qeth_is_supported(card, IPA_IPV6)) {
1393                 dev_info(&card->gdev->dev,
1394                         "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card));
1395                 return 0;
1396         }
1397 #ifdef CONFIG_QETH_IPV6
1398         rc = qeth_l3_softsetup_ipv6(card);
1399 #endif
1400         return rc ;
1401 }
1402
1403 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card)
1404 {
1405         int rc;
1406
1407         QETH_DBF_TEXT(TRACE, 3, "stbrdcst");
1408         card->info.broadcast_capable = 0;
1409         if (!qeth_is_supported(card, IPA_FILTERING)) {
1410                 dev_info(&card->gdev->dev,
1411                         "Broadcast not supported on %s\n",
1412                         QETH_CARD_IFNAME(card));
1413                 rc = -EOPNOTSUPP;
1414                 goto out;
1415         }
1416         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1417                                           IPA_CMD_ASS_START, 0);
1418         if (rc) {
1419                 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for "
1420                         "%s failed\n", QETH_CARD_IFNAME(card));
1421                 goto out;
1422         }
1423
1424         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1425                                           IPA_CMD_ASS_CONFIGURE, 1);
1426         if (rc) {
1427                 dev_warn(&card->gdev->dev,
1428                         "Setting up broadcast filtering for %s failed\n",
1429                         QETH_CARD_IFNAME(card));
1430                 goto out;
1431         }
1432         card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO;
1433         dev_info(&card->gdev->dev, "Broadcast enabled\n");
1434         rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING,
1435                                           IPA_CMD_ASS_ENABLE, 1);
1436         if (rc) {
1437                 dev_warn(&card->gdev->dev, "Setting up broadcast echo "
1438                         "filtering for %s failed\n", QETH_CARD_IFNAME(card));
1439                 goto out;
1440         }
1441         card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO;
1442 out:
1443         if (card->info.broadcast_capable)
1444                 card->dev->flags |= IFF_BROADCAST;
1445         else
1446                 card->dev->flags &= ~IFF_BROADCAST;
1447         return rc;
1448 }
1449
1450 static int qeth_l3_send_checksum_command(struct qeth_card *card)
1451 {
1452         int rc;
1453
1454         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1455                                           IPA_CMD_ASS_START, 0);
1456         if (rc) {
1457                 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s "
1458                         "failed, using SW checksumming\n",
1459                         QETH_CARD_IFNAME(card));
1460                 return rc;
1461         }
1462         rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM,
1463                                           IPA_CMD_ASS_ENABLE,
1464                                           card->info.csum_mask);
1465         if (rc) {
1466                 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s "
1467                         "failed, using SW checksumming\n",
1468                         QETH_CARD_IFNAME(card));
1469                 return rc;
1470         }
1471         return 0;
1472 }
1473
1474 int qeth_l3_set_rx_csum(struct qeth_card *card,
1475         enum qeth_checksum_types csum_type)
1476 {
1477         int rc = 0;
1478
1479         if (card->options.checksum_type == HW_CHECKSUMMING) {
1480                 if ((csum_type != HW_CHECKSUMMING) &&
1481                         (card->state != CARD_STATE_DOWN)) {
1482                         rc = qeth_l3_send_simple_setassparms(card,
1483                                 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0);
1484                         if (rc)
1485                                 return -EIO;
1486                 }
1487         } else {
1488                 if (csum_type == HW_CHECKSUMMING) {
1489                         if (card->state != CARD_STATE_DOWN) {
1490                                 if (!qeth_is_supported(card,
1491                                     IPA_INBOUND_CHECKSUM))
1492                                         return -EPERM;
1493                                 rc = qeth_l3_send_checksum_command(card);
1494                                 if (rc)
1495                                         return -EIO;
1496                         }
1497                 }
1498         }
1499         card->options.checksum_type = csum_type;
1500         return rc;
1501 }
1502
1503 static int qeth_l3_start_ipa_checksum(struct qeth_card *card)
1504 {
1505         int rc = 0;
1506
1507         QETH_DBF_TEXT(TRACE, 3, "strtcsum");
1508
1509         if (card->options.checksum_type == NO_CHECKSUMMING) {
1510                 dev_info(&card->gdev->dev,
1511                         "Using no checksumming on %s.\n",
1512                         QETH_CARD_IFNAME(card));
1513                 return 0;
1514         }
1515         if (card->options.checksum_type == SW_CHECKSUMMING) {
1516                 dev_info(&card->gdev->dev,
1517                         "Using SW checksumming on %s.\n",
1518                         QETH_CARD_IFNAME(card));
1519                 return 0;
1520         }
1521         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1522                 dev_info(&card->gdev->dev,
1523                         "Inbound HW Checksumming not "
1524                         "supported on %s,\ncontinuing "
1525                         "using Inbound SW Checksumming\n",
1526                         QETH_CARD_IFNAME(card));
1527                 card->options.checksum_type = SW_CHECKSUMMING;
1528                 return 0;
1529         }
1530         rc = qeth_l3_send_checksum_command(card);
1531         if (!rc)
1532                 dev_info(&card->gdev->dev,
1533                         "HW Checksumming (inbound) enabled\n");
1534
1535         return rc;
1536 }
1537
1538 static int qeth_l3_start_ipa_tso(struct qeth_card *card)
1539 {
1540         int rc;
1541
1542         QETH_DBF_TEXT(TRACE, 3, "sttso");
1543
1544         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
1545                 dev_info(&card->gdev->dev,
1546                         "Outbound TSO not supported on %s\n",
1547                         QETH_CARD_IFNAME(card));
1548                 rc = -EOPNOTSUPP;
1549         } else {
1550                 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
1551                                                 IPA_CMD_ASS_START, 0);
1552                 if (rc)
1553                         dev_warn(&card->gdev->dev, "Starting outbound TCP "
1554                                 "segmentation offload for %s failed\n",
1555                                 QETH_CARD_IFNAME(card));
1556                 else
1557                         dev_info(&card->gdev->dev,
1558                                 "Outbound TSO enabled\n");
1559         }
1560         if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) {
1561                 card->options.large_send = QETH_LARGE_SEND_NO;
1562                 card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG);
1563         }
1564         return rc;
1565 }
1566
1567 static int qeth_l3_start_ipassists(struct qeth_card *card)
1568 {
1569         QETH_DBF_TEXT(TRACE, 3, "strtipas");
1570
1571         qeth_set_access_ctrl_online(card);      /* go on*/
1572         qeth_l3_start_ipa_arp_processing(card); /* go on*/
1573         qeth_l3_start_ipa_ip_fragmentation(card);       /* go on*/
1574         qeth_l3_start_ipa_source_mac(card);     /* go on*/
1575         qeth_l3_start_ipa_vlan(card);           /* go on*/
1576         qeth_l3_start_ipa_multicast(card);              /* go on*/
1577         qeth_l3_start_ipa_ipv6(card);           /* go on*/
1578         qeth_l3_start_ipa_broadcast(card);              /* go on*/
1579         qeth_l3_start_ipa_checksum(card);               /* go on*/
1580         qeth_l3_start_ipa_tso(card);            /* go on*/
1581         return 0;
1582 }
1583
1584 static int qeth_l3_put_unique_id(struct qeth_card *card)
1585 {
1586
1587         int rc = 0;
1588         struct qeth_cmd_buffer *iob;
1589         struct qeth_ipa_cmd *cmd;
1590
1591         QETH_DBF_TEXT(TRACE, 2, "puniqeid");
1592
1593         if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) ==
1594                 UNIQUE_ID_NOT_BY_CARD)
1595                 return -1;
1596         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR,
1597                                      QETH_PROT_IPV6);
1598         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1599         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1600                                 card->info.unique_id;
1601         memcpy(&cmd->data.create_destroy_addr.unique_id[0],
1602                card->dev->dev_addr, OSA_ADDR_LEN);
1603         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
1604         return rc;
1605 }
1606
1607 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card,
1608                 struct qeth_reply *reply, unsigned long data)
1609 {
1610         struct qeth_ipa_cmd *cmd;
1611
1612         cmd = (struct qeth_ipa_cmd *) data;
1613         if (cmd->hdr.return_code == 0)
1614                 memcpy(card->dev->dev_addr,
1615                         cmd->data.create_destroy_addr.unique_id, ETH_ALEN);
1616         else
1617                 random_ether_addr(card->dev->dev_addr);
1618
1619         return 0;
1620 }
1621
1622 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card)
1623 {
1624         int rc = 0;
1625         struct qeth_cmd_buffer *iob;
1626         struct qeth_ipa_cmd *cmd;
1627
1628         QETH_DBF_TEXT(SETUP, 2, "hsrmac");
1629
1630         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1631                                      QETH_PROT_IPV6);
1632         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1633         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1634                         card->info.unique_id;
1635
1636         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb,
1637                                 NULL);
1638         return rc;
1639 }
1640
1641 static int qeth_l3_get_unique_id_cb(struct qeth_card *card,
1642                 struct qeth_reply *reply, unsigned long data)
1643 {
1644         struct qeth_ipa_cmd *cmd;
1645
1646         cmd = (struct qeth_ipa_cmd *) data;
1647         if (cmd->hdr.return_code == 0)
1648                 card->info.unique_id = *((__u16 *)
1649                                 &cmd->data.create_destroy_addr.unique_id[6]);
1650         else {
1651                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1652                                         UNIQUE_ID_NOT_BY_CARD;
1653                 dev_warn(&card->gdev->dev, "The network adapter failed to "
1654                         "generate a unique ID\n");
1655         }
1656         return 0;
1657 }
1658
1659 static int qeth_l3_get_unique_id(struct qeth_card *card)
1660 {
1661         int rc = 0;
1662         struct qeth_cmd_buffer *iob;
1663         struct qeth_ipa_cmd *cmd;
1664
1665         QETH_DBF_TEXT(SETUP, 2, "guniqeid");
1666
1667         if (!qeth_is_supported(card, IPA_IPV6)) {
1668                 card->info.unique_id =  UNIQUE_ID_IF_CREATE_ADDR_FAILED |
1669                                         UNIQUE_ID_NOT_BY_CARD;
1670                 return 0;
1671         }
1672
1673         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR,
1674                                      QETH_PROT_IPV6);
1675         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1676         *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) =
1677                         card->info.unique_id;
1678
1679         rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL);
1680         return rc;
1681 }
1682
1683 static int
1684 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
1685                             unsigned long data)
1686 {
1687         struct qeth_ipa_cmd        *cmd;
1688         __u16 rc;
1689
1690         QETH_DBF_TEXT(SETUP, 2, "diastrcb");
1691
1692         cmd = (struct qeth_ipa_cmd *)data;
1693         rc = cmd->hdr.return_code;
1694         if (rc) {
1695                 QETH_DBF_TEXT_(TRACE, 2, "dxter%x", rc);
1696                 if (cmd->data.diagass.action == QETH_DIAGS_CMD_TRACE_ENABLE) {
1697                         switch (rc) {
1698                         case IPA_RC_HARDWARE_AUTH_ERROR:
1699                                 dev_warn(&card->gdev->dev, "The device is not "
1700                                         "authorized to run as a HiperSockets "
1701                                         "network traffic analyzer\n");
1702                                 break;
1703                         case IPA_RC_TRACE_ALREADY_ACTIVE:
1704                                 dev_warn(&card->gdev->dev, "A HiperSockets "
1705                                         "network traffic analyzer is already "
1706                                         "active in the HiperSockets LAN\n");
1707                                 break;
1708                         default:
1709                                 break;
1710                         }
1711                 }
1712                 return 0;
1713         }
1714
1715         switch (cmd->data.diagass.action) {
1716         case QETH_DIAGS_CMD_TRACE_QUERY:
1717                 break;
1718         case QETH_DIAGS_CMD_TRACE_DISABLE:
1719                 card->info.promisc_mode = SET_PROMISC_MODE_OFF;
1720                 dev_info(&card->gdev->dev, "The HiperSockets network traffic "
1721                         "analyzer is deactivated\n");
1722                 break;
1723         case QETH_DIAGS_CMD_TRACE_ENABLE:
1724                 card->info.promisc_mode = SET_PROMISC_MODE_ON;
1725                 dev_info(&card->gdev->dev, "The HiperSockets network traffic "
1726                         "analyzer is activated\n");
1727                 break;
1728         default:
1729                 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
1730                         cmd->data.diagass.action, QETH_CARD_IFNAME(card));
1731         }
1732
1733         return 0;
1734 }
1735
1736 static int
1737 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd)
1738 {
1739         struct qeth_cmd_buffer *iob;
1740         struct qeth_ipa_cmd    *cmd;
1741
1742         QETH_DBF_TEXT(SETUP, 2, "diagtrac");
1743
1744         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
1745         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1746         cmd->data.diagass.subcmd_len = 16;
1747         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE;
1748         cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET;
1749         cmd->data.diagass.action = diags_cmd;
1750         return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL);
1751 }
1752
1753 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac,
1754                                 struct net_device *dev)
1755 {
1756         if (dev->type == ARPHRD_IEEE802_TR)
1757                 ip_tr_mc_map(ipm, mac);
1758         else
1759                 ip_eth_mc_map(ipm, mac);
1760 }
1761
1762 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev)
1763 {
1764         struct qeth_ipaddr *ipm;
1765         struct ip_mc_list *im4;
1766         char buf[MAX_ADDR_LEN];
1767
1768         QETH_DBF_TEXT(TRACE, 4, "addmc");
1769         for (im4 = in4_dev->mc_list; im4; im4 = im4->next) {
1770                 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev);
1771                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1772                 if (!ipm)
1773                         continue;
1774                 ipm->u.a4.addr = im4->multiaddr;
1775                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1776                 ipm->is_multicast = 1;
1777                 if (!qeth_l3_add_ip(card, ipm))
1778                         kfree(ipm);
1779         }
1780 }
1781
1782 static void qeth_l3_add_vlan_mc(struct qeth_card *card)
1783 {
1784         struct in_device *in_dev;
1785         struct vlan_group *vg;
1786         int i;
1787
1788         QETH_DBF_TEXT(TRACE, 4, "addmcvl");
1789         if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1790                 return;
1791
1792         vg = card->vlangrp;
1793         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1794                 struct net_device *netdev = vlan_group_get_device(vg, i);
1795                 if (netdev == NULL ||
1796                     !(netdev->flags & IFF_UP))
1797                         continue;
1798                 in_dev = in_dev_get(netdev);
1799                 if (!in_dev)
1800                         continue;
1801                 read_lock(&in_dev->mc_list_lock);
1802                 qeth_l3_add_mc(card, in_dev);
1803                 read_unlock(&in_dev->mc_list_lock);
1804                 in_dev_put(in_dev);
1805         }
1806 }
1807
1808 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card)
1809 {
1810         struct in_device *in4_dev;
1811
1812         QETH_DBF_TEXT(TRACE, 4, "chkmcv4");
1813         in4_dev = in_dev_get(card->dev);
1814         if (in4_dev == NULL)
1815                 return;
1816         read_lock(&in4_dev->mc_list_lock);
1817         qeth_l3_add_mc(card, in4_dev);
1818         qeth_l3_add_vlan_mc(card);
1819         read_unlock(&in4_dev->mc_list_lock);
1820         in_dev_put(in4_dev);
1821 }
1822
1823 #ifdef CONFIG_QETH_IPV6
1824 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev)
1825 {
1826         struct qeth_ipaddr *ipm;
1827         struct ifmcaddr6 *im6;
1828         char buf[MAX_ADDR_LEN];
1829
1830         QETH_DBF_TEXT(TRACE, 4, "addmc6");
1831         for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) {
1832                 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0);
1833                 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1834                 if (!ipm)
1835                         continue;
1836                 ipm->is_multicast = 1;
1837                 memcpy(ipm->mac, buf, OSA_ADDR_LEN);
1838                 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr,
1839                        sizeof(struct in6_addr));
1840                 if (!qeth_l3_add_ip(card, ipm))
1841                         kfree(ipm);
1842         }
1843 }
1844
1845 static void qeth_l3_add_vlan_mc6(struct qeth_card *card)
1846 {
1847         struct inet6_dev *in_dev;
1848         struct vlan_group *vg;
1849         int i;
1850
1851         QETH_DBF_TEXT(TRACE, 4, "admc6vl");
1852         if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL))
1853                 return;
1854
1855         vg = card->vlangrp;
1856         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
1857                 struct net_device *netdev = vlan_group_get_device(vg, i);
1858                 if (netdev == NULL ||
1859                     !(netdev->flags & IFF_UP))
1860                         continue;
1861                 in_dev = in6_dev_get(netdev);
1862                 if (!in_dev)
1863                         continue;
1864                 read_lock_bh(&in_dev->lock);
1865                 qeth_l3_add_mc6(card, in_dev);
1866                 read_unlock_bh(&in_dev->lock);
1867                 in6_dev_put(in_dev);
1868         }
1869 }
1870
1871 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card)
1872 {
1873         struct inet6_dev *in6_dev;
1874
1875         QETH_DBF_TEXT(TRACE, 4, "chkmcv6");
1876         if (!qeth_is_supported(card, IPA_IPV6))
1877                 return ;
1878         in6_dev = in6_dev_get(card->dev);
1879         if (in6_dev == NULL)
1880                 return;
1881         read_lock_bh(&in6_dev->lock);
1882         qeth_l3_add_mc6(card, in6_dev);
1883         qeth_l3_add_vlan_mc6(card);
1884         read_unlock_bh(&in6_dev->lock);
1885         in6_dev_put(in6_dev);
1886 }
1887 #endif /* CONFIG_QETH_IPV6 */
1888
1889 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card,
1890                         unsigned short vid)
1891 {
1892         struct in_device *in_dev;
1893         struct in_ifaddr *ifa;
1894         struct qeth_ipaddr *addr;
1895
1896         QETH_DBF_TEXT(TRACE, 4, "frvaddr4");
1897
1898         in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid));
1899         if (!in_dev)
1900                 return;
1901         for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
1902                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
1903                 if (addr) {
1904                         addr->u.a4.addr = ifa->ifa_address;
1905                         addr->u.a4.mask = ifa->ifa_mask;
1906                         addr->type = QETH_IP_TYPE_NORMAL;
1907                         if (!qeth_l3_delete_ip(card, addr))
1908                                 kfree(addr);
1909                 }
1910         }
1911         in_dev_put(in_dev);
1912 }
1913
1914 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card,
1915                         unsigned short vid)
1916 {
1917 #ifdef CONFIG_QETH_IPV6
1918         struct inet6_dev *in6_dev;
1919         struct inet6_ifaddr *ifa;
1920         struct qeth_ipaddr *addr;
1921
1922         QETH_DBF_TEXT(TRACE, 4, "frvaddr6");
1923
1924         in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid));
1925         if (!in6_dev)
1926                 return;
1927         for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next) {
1928                 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
1929                 if (addr) {
1930                         memcpy(&addr->u.a6.addr, &ifa->addr,
1931                                sizeof(struct in6_addr));
1932                         addr->u.a6.pfxlen = ifa->prefix_len;
1933                         addr->type = QETH_IP_TYPE_NORMAL;
1934                         if (!qeth_l3_delete_ip(card, addr))
1935                                 kfree(addr);
1936                 }
1937         }
1938         in6_dev_put(in6_dev);
1939 #endif /* CONFIG_QETH_IPV6 */
1940 }
1941
1942 static void qeth_l3_free_vlan_addresses(struct qeth_card *card,
1943                         unsigned short vid)
1944 {
1945         if (!card->vlangrp)
1946                 return;
1947         qeth_l3_free_vlan_addresses4(card, vid);
1948         qeth_l3_free_vlan_addresses6(card, vid);
1949 }
1950
1951 static void qeth_l3_vlan_rx_register(struct net_device *dev,
1952                         struct vlan_group *grp)
1953 {
1954         struct qeth_card *card = dev->ml_priv;
1955         unsigned long flags;
1956
1957         QETH_DBF_TEXT(TRACE, 4, "vlanreg");
1958         spin_lock_irqsave(&card->vlanlock, flags);
1959         card->vlangrp = grp;
1960         spin_unlock_irqrestore(&card->vlanlock, flags);
1961 }
1962
1963 static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1964 {
1965         return;
1966 }
1967
1968 static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1969 {
1970         struct qeth_card *card = dev->ml_priv;
1971         unsigned long flags;
1972
1973         QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
1974         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1975                 QETH_DBF_TEXT(TRACE, 3, "kidREC");
1976                 return;
1977         }
1978         spin_lock_irqsave(&card->vlanlock, flags);
1979         /* unregister IP addresses of vlan device */
1980         qeth_l3_free_vlan_addresses(card, vid);
1981         vlan_group_set_device(card->vlangrp, vid, NULL);
1982         spin_unlock_irqrestore(&card->vlanlock, flags);
1983         qeth_l3_set_multicast_list(card->dev);
1984 }
1985
1986 static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card,
1987                         struct sk_buff *skb, struct qeth_hdr *hdr)
1988 {
1989         unsigned short vlan_id = 0;
1990         __be16 prot;
1991         struct iphdr *ip_hdr;
1992         unsigned char tg_addr[MAX_ADDR_LEN];
1993
1994         if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) {
1995                 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 :
1996                               ETH_P_IP);
1997                 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) {
1998                 case QETH_CAST_MULTICAST:
1999                         switch (prot) {
2000 #ifdef CONFIG_QETH_IPV6
2001                         case __constant_htons(ETH_P_IPV6):
2002                                 ndisc_mc_map((struct in6_addr *)
2003                                      skb->data + 24,
2004                                      tg_addr, card->dev, 0);
2005                                 break;
2006 #endif
2007                         case __constant_htons(ETH_P_IP):
2008                                 ip_hdr = (struct iphdr *)skb->data;
2009                                 (card->dev->type == ARPHRD_IEEE802_TR) ?
2010                                 ip_tr_mc_map(ip_hdr->daddr, tg_addr):
2011                                 ip_eth_mc_map(ip_hdr->daddr, tg_addr);
2012                                 break;
2013                         default:
2014                                 memcpy(tg_addr, card->dev->broadcast,
2015                                         card->dev->addr_len);
2016                         }
2017                         card->stats.multicast++;
2018                         skb->pkt_type = PACKET_MULTICAST;
2019                         break;
2020                 case QETH_CAST_BROADCAST:
2021                         memcpy(tg_addr, card->dev->broadcast,
2022                                 card->dev->addr_len);
2023                         card->stats.multicast++;
2024                         skb->pkt_type = PACKET_BROADCAST;
2025                         break;
2026                 case QETH_CAST_UNICAST:
2027                 case QETH_CAST_ANYCAST:
2028                 case QETH_CAST_NOCAST:
2029                 default:
2030                         if (card->options.sniffer)
2031                                 skb->pkt_type = PACKET_OTHERHOST;
2032                         else
2033                                 skb->pkt_type = PACKET_HOST;
2034                         memcpy(tg_addr, card->dev->dev_addr,
2035                                 card->dev->addr_len);
2036                 }
2037                 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR)
2038                         card->dev->header_ops->create(skb, card->dev, prot,
2039                                 tg_addr, &hdr->hdr.l3.dest_addr[2],
2040                                 card->dev->addr_len);
2041                 else
2042                         card->dev->header_ops->create(skb, card->dev, prot,
2043                                 tg_addr, "FAKELL", card->dev->addr_len);
2044         }
2045
2046 #ifdef CONFIG_TR
2047         if (card->dev->type == ARPHRD_IEEE802_TR)
2048                 skb->protocol = tr_type_trans(skb, card->dev);
2049         else
2050 #endif
2051                 skb->protocol = eth_type_trans(skb, card->dev);
2052
2053         if (hdr->hdr.l3.ext_flags &
2054             (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) {
2055                 vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)?
2056                  hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]);
2057         }
2058
2059         switch (card->options.checksum_type) {
2060         case SW_CHECKSUMMING:
2061                 skb->ip_summed = CHECKSUM_NONE;
2062                 break;
2063         case NO_CHECKSUMMING:
2064                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2065                 break;
2066         case HW_CHECKSUMMING:
2067                 if ((hdr->hdr.l3.ext_flags &
2068                     (QETH_HDR_EXT_CSUM_HDR_REQ |
2069                      QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
2070                     (QETH_HDR_EXT_CSUM_HDR_REQ |
2071                      QETH_HDR_EXT_CSUM_TRANSP_REQ))
2072                         skb->ip_summed = CHECKSUM_UNNECESSARY;
2073                 else
2074                         skb->ip_summed = CHECKSUM_NONE;
2075         }
2076
2077         return vlan_id;
2078 }
2079
2080 static void qeth_l3_process_inbound_buffer(struct qeth_card *card,
2081                             struct qeth_qdio_buffer *buf, int index)
2082 {
2083         struct qdio_buffer_element *element;
2084         struct sk_buff *skb;
2085         struct qeth_hdr *hdr;
2086         int offset;
2087         __u16 vlan_tag = 0;
2088         unsigned int len;
2089         /* get first element of current buffer */
2090         element = (struct qdio_buffer_element *)&buf->buffer->element[0];
2091         offset = 0;
2092         if (card->options.performance_stats)
2093                 card->perf_stats.bufs_rec++;
2094         while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
2095                                        &offset, &hdr))) {
2096                 skb->dev = card->dev;
2097                 /* is device UP ? */
2098                 if (!(card->dev->flags & IFF_UP)) {
2099                         dev_kfree_skb_any(skb);
2100                         continue;
2101                 }
2102
2103                 switch (hdr->hdr.l3.id) {
2104                 case QETH_HEADER_TYPE_LAYER3:
2105                         vlan_tag = qeth_l3_rebuild_skb(card, skb, hdr);
2106                         len = skb->len;
2107                         if (vlan_tag && !card->options.sniffer)
2108                                 if (card->vlangrp)
2109                                         vlan_hwaccel_rx(skb, card->vlangrp,
2110                                                 vlan_tag);
2111                                 else {
2112                                         dev_kfree_skb_any(skb);
2113                                         continue;
2114                                 }
2115                         else
2116                                 netif_rx(skb);
2117                         break;
2118                 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */
2119                         skb->pkt_type = PACKET_HOST;
2120                         skb->protocol = eth_type_trans(skb, skb->dev);
2121                         if (card->options.checksum_type == NO_CHECKSUMMING)
2122                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2123                         else
2124                                 skb->ip_summed = CHECKSUM_NONE;
2125                         len = skb->len;
2126                         netif_receive_skb(skb);
2127                         break;
2128                 default:
2129                         dev_kfree_skb_any(skb);
2130                         QETH_DBF_TEXT(TRACE, 3, "inbunkno");
2131                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
2132                         continue;
2133                 }
2134
2135                 card->stats.rx_packets++;
2136                 card->stats.rx_bytes += len;
2137         }
2138 }
2139
2140 static int qeth_l3_verify_vlan_dev(struct net_device *dev,
2141                         struct qeth_card *card)
2142 {
2143         int rc = 0;
2144         struct vlan_group *vg;
2145         int i;
2146
2147         vg = card->vlangrp;
2148         if (!vg)
2149                 return rc;
2150
2151         for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) {
2152                 if (vlan_group_get_device(vg, i) == dev) {
2153                         rc = QETH_VLAN_CARD;
2154                         break;
2155                 }
2156         }
2157
2158         if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card))
2159                 return 0;
2160
2161         return rc;
2162 }
2163
2164 static int qeth_l3_verify_dev(struct net_device *dev)
2165 {
2166         struct qeth_card *card;
2167         unsigned long flags;
2168         int rc = 0;
2169
2170         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
2171         list_for_each_entry(card, &qeth_core_card_list.list, list) {
2172                 if (card->dev == dev) {
2173                         rc = QETH_REAL_CARD;
2174                         break;
2175                 }
2176                 rc = qeth_l3_verify_vlan_dev(dev, card);
2177                 if (rc)
2178                         break;
2179         }
2180         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
2181
2182         return rc;
2183 }
2184
2185 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev)
2186 {
2187         struct qeth_card *card = NULL;
2188         int rc;
2189
2190         rc = qeth_l3_verify_dev(dev);
2191         if (rc == QETH_REAL_CARD)
2192                 card = dev->ml_priv;
2193         else if (rc == QETH_VLAN_CARD)
2194                 card = vlan_dev_real_dev(dev)->ml_priv;
2195         if (card && card->options.layer2)
2196                 card = NULL;
2197         QETH_DBF_TEXT_(TRACE, 4, "%d", rc);
2198         return card ;
2199 }
2200
2201 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
2202 {
2203         int rc = 0;
2204
2205         QETH_DBF_TEXT(SETUP, 2, "stopcard");
2206         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
2207
2208         qeth_set_allowed_threads(card, 0, 1);
2209         if (card->options.sniffer &&
2210             (card->info.promisc_mode == SET_PROMISC_MODE_ON))
2211                 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2212         if (card->read.state == CH_STATE_UP &&
2213             card->write.state == CH_STATE_UP &&
2214             (card->state == CARD_STATE_UP)) {
2215                 if (recovery_mode)
2216                         qeth_l3_stop(card->dev);
2217                 else {
2218                         if (card->dev) {
2219                                 rtnl_lock();
2220                                 dev_close(card->dev);
2221                                 rtnl_unlock();
2222                         }
2223                 }
2224                 if (!card->use_hard_stop) {
2225                         rc = qeth_send_stoplan(card);
2226                         if (rc)
2227                                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2228                 }
2229                 card->state = CARD_STATE_SOFTSETUP;
2230         }
2231         if (card->state == CARD_STATE_SOFTSETUP) {
2232                 qeth_l3_clear_ip_list(card, !card->use_hard_stop, 1);
2233                 qeth_clear_ipacmd_list(card);
2234                 card->state = CARD_STATE_HARDSETUP;
2235         }
2236         if (card->state == CARD_STATE_HARDSETUP) {
2237                 if (!card->use_hard_stop &&
2238                     (card->info.type != QETH_CARD_TYPE_IQD)) {
2239                         rc = qeth_l3_put_unique_id(card);
2240                         if (rc)
2241                                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2242                 }
2243                 qeth_qdio_clear_card(card, 0);
2244                 qeth_clear_qdio_buffers(card);
2245                 qeth_clear_working_pool_list(card);
2246                 card->state = CARD_STATE_DOWN;
2247         }
2248         if (card->state == CARD_STATE_DOWN) {
2249                 qeth_clear_cmd_buffers(&card->read);
2250                 qeth_clear_cmd_buffers(&card->write);
2251         }
2252         card->use_hard_stop = 0;
2253         return rc;
2254 }
2255
2256 /*
2257  * test for and Switch promiscuous mode (on or off)
2258  *  either for guestlan or HiperSocket Sniffer
2259  */
2260 static void
2261 qeth_l3_handle_promisc_mode(struct qeth_card *card)
2262 {
2263         struct net_device *dev = card->dev;
2264
2265         if (((dev->flags & IFF_PROMISC) &&
2266              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
2267             (!(dev->flags & IFF_PROMISC) &&
2268              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
2269                 return;
2270
2271         if (card->info.guestlan) {              /* Guestlan trace */
2272                 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2273                         qeth_setadp_promisc_mode(card);
2274         } else if (card->options.sniffer &&     /* HiperSockets trace */
2275                    qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
2276                 if (dev->flags & IFF_PROMISC) {
2277                         QETH_DBF_TEXT(TRACE, 3, "+promisc");
2278                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
2279                 } else {
2280                         QETH_DBF_TEXT(TRACE, 3, "-promisc");
2281                         qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE);
2282                 }
2283         }
2284 }
2285
2286 static void qeth_l3_set_multicast_list(struct net_device *dev)
2287 {
2288         struct qeth_card *card = dev->ml_priv;
2289
2290         QETH_DBF_TEXT(TRACE, 3, "setmulti");
2291         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
2292             (card->state != CARD_STATE_UP))
2293                 return;
2294         if (!card->options.sniffer) {
2295                 qeth_l3_delete_mc_addresses(card);
2296                 qeth_l3_add_multicast_ipv4(card);
2297 #ifdef CONFIG_QETH_IPV6
2298                 qeth_l3_add_multicast_ipv6(card);
2299 #endif
2300                 qeth_l3_set_ip_addr_list(card);
2301                 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
2302                         return;
2303         }
2304         qeth_l3_handle_promisc_mode(card);
2305 }
2306
2307 static const char *qeth_l3_arp_get_error_cause(int *rc)
2308 {
2309         switch (*rc) {
2310         case QETH_IPA_ARP_RC_FAILED:
2311                 *rc = -EIO;
2312                 return "operation failed";
2313         case QETH_IPA_ARP_RC_NOTSUPP:
2314                 *rc = -EOPNOTSUPP;
2315                 return "operation not supported";
2316         case QETH_IPA_ARP_RC_OUT_OF_RANGE:
2317                 *rc = -EINVAL;
2318                 return "argument out of range";
2319         case QETH_IPA_ARP_RC_Q_NOTSUPP:
2320                 *rc = -EOPNOTSUPP;
2321                 return "query operation not supported";
2322         case QETH_IPA_ARP_RC_Q_NO_DATA:
2323                 *rc = -ENOENT;
2324                 return "no query data available";
2325         default:
2326                 return "unknown error";
2327         }
2328 }
2329
2330 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
2331 {
2332         int tmp;
2333         int rc;
2334
2335         QETH_DBF_TEXT(TRACE, 3, "arpstnoe");
2336
2337         /*
2338          * currently GuestLAN only supports the ARP assist function
2339          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES;
2340          * thus we say EOPNOTSUPP for this ARP function
2341          */
2342         if (card->info.guestlan)
2343                 return -EOPNOTSUPP;
2344         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2345                 return -EOPNOTSUPP;
2346         }
2347         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2348                                           IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
2349                                           no_entries);
2350         if (rc) {
2351                 tmp = rc;
2352                 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on "
2353                         "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card),
2354                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2355         }
2356         return rc;
2357 }
2358
2359 static void qeth_l3_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo,
2360                 struct qeth_arp_query_data *qdata, int entry_size,
2361                 int uentry_size)
2362 {
2363         char *entry_ptr;
2364         char *uentry_ptr;
2365         int i;
2366
2367         entry_ptr = (char *)&qdata->data;
2368         uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset);
2369         for (i = 0; i < qdata->no_entries; ++i) {
2370                 /* strip off 32 bytes "media specific information" */
2371                 memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32);
2372                 entry_ptr += entry_size;
2373                 uentry_ptr += uentry_size;
2374         }
2375 }
2376
2377 static int qeth_l3_arp_query_cb(struct qeth_card *card,
2378                 struct qeth_reply *reply, unsigned long data)
2379 {
2380         struct qeth_ipa_cmd *cmd;
2381         struct qeth_arp_query_data *qdata;
2382         struct qeth_arp_query_info *qinfo;
2383         int entry_size;
2384         int uentry_size;
2385         int i;
2386
2387         QETH_DBF_TEXT(TRACE, 4, "arpquecb");
2388
2389         qinfo = (struct qeth_arp_query_info *) reply->param;
2390         cmd = (struct qeth_ipa_cmd *) data;
2391         if (cmd->hdr.return_code) {
2392                 QETH_DBF_TEXT_(TRACE, 4, "qaer1%i", cmd->hdr.return_code);
2393                 return 0;
2394         }
2395         if (cmd->data.setassparms.hdr.return_code) {
2396                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
2397                 QETH_DBF_TEXT_(TRACE, 4, "qaer2%i", cmd->hdr.return_code);
2398                 return 0;
2399         }
2400         qdata = &cmd->data.setassparms.data.query_arp;
2401         switch (qdata->reply_bits) {
2402         case 5:
2403                 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5);
2404                 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2405                         uentry_size = sizeof(struct qeth_arp_qi_entry5_short);
2406                 break;
2407         case 7:
2408                 /* fall through to default */
2409         default:
2410                 /* tr is the same as eth -> entry7 */
2411                 uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7);
2412                 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2413                         uentry_size = sizeof(struct qeth_arp_qi_entry7_short);
2414                 break;
2415         }
2416         /* check if there is enough room in userspace */
2417         if ((qinfo->udata_len - qinfo->udata_offset) <
2418                         qdata->no_entries * uentry_size){
2419                 QETH_DBF_TEXT_(TRACE, 4, "qaer3%i", -ENOMEM);
2420                 cmd->hdr.return_code = -ENOMEM;
2421                 goto out_error;
2422         }
2423         QETH_DBF_TEXT_(TRACE, 4, "anore%i",
2424                        cmd->data.setassparms.hdr.number_of_replies);
2425         QETH_DBF_TEXT_(TRACE, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no);
2426         QETH_DBF_TEXT_(TRACE, 4, "anoen%i", qdata->no_entries);
2427
2428         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) {
2429                 /* strip off "media specific information" */
2430                 qeth_l3_copy_arp_entries_stripped(qinfo, qdata, entry_size,
2431                                                uentry_size);
2432         } else
2433                 /*copy entries to user buffer*/
2434                 memcpy(qinfo->udata + qinfo->udata_offset,
2435                        (char *)&qdata->data, qdata->no_entries*uentry_size);
2436
2437         qinfo->no_entries += qdata->no_entries;
2438         qinfo->udata_offset += (qdata->no_entries*uentry_size);
2439         /* check if all replies received ... */
2440         if (cmd->data.setassparms.hdr.seq_no <
2441             cmd->data.setassparms.hdr.number_of_replies)
2442                 return 1;
2443         memcpy(qinfo->udata, &qinfo->no_entries, 4);
2444         /* keep STRIP_ENTRIES flag so the user program can distinguish
2445          * stripped entries from normal ones */
2446         if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES)
2447                 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES;
2448         memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2);
2449         return 0;
2450 out_error:
2451         i = 0;
2452         memcpy(qinfo->udata, &i, 4);
2453         return 0;
2454 }
2455
2456 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card,
2457                 struct qeth_cmd_buffer *iob, int len,
2458                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
2459                         unsigned long),
2460                 void *reply_param)
2461 {
2462         QETH_DBF_TEXT(TRACE, 4, "sendarp");
2463
2464         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2465         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2466                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2467         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
2468                                       reply_cb, reply_param);
2469 }
2470
2471 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata)
2472 {
2473         struct qeth_cmd_buffer *iob;
2474         struct qeth_arp_query_info qinfo = {0, };
2475         int tmp;
2476         int rc;
2477
2478         QETH_DBF_TEXT(TRACE, 3, "arpquery");
2479
2480         if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/
2481                                IPA_ARP_PROCESSING)) {
2482                 return -EOPNOTSUPP;
2483         }
2484         /* get size of userspace buffer and mask_bits -> 6 bytes */
2485         if (copy_from_user(&qinfo, udata, 6))
2486                 return -EFAULT;
2487         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
2488         if (!qinfo.udata)
2489                 return -ENOMEM;
2490         qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET;
2491         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2492                                        IPA_CMD_ASS_ARP_QUERY_INFO,
2493                                        sizeof(int), QETH_PROT_IPV4);
2494
2495         rc = qeth_l3_send_ipa_arp_cmd(card, iob,
2496                                    QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN,
2497                                    qeth_l3_arp_query_cb, (void *)&qinfo);
2498         if (rc) {
2499                 tmp = rc;
2500                 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on %s: %s "
2501                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2502                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2503                 if (copy_to_user(udata, qinfo.udata, 4))
2504                         rc = -EFAULT;
2505         } else {
2506                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
2507                         rc = -EFAULT;
2508         }
2509         kfree(qinfo.udata);
2510         return rc;
2511 }
2512
2513 static int qeth_l3_arp_add_entry(struct qeth_card *card,
2514                                 struct qeth_arp_cache_entry *entry)
2515 {
2516         struct qeth_cmd_buffer *iob;
2517         char buf[16];
2518         int tmp;
2519         int rc;
2520
2521         QETH_DBF_TEXT(TRACE, 3, "arpadent");
2522
2523         /*
2524          * currently GuestLAN only supports the ARP assist function
2525          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY;
2526          * thus we say EOPNOTSUPP for this ARP function
2527          */
2528         if (card->info.guestlan)
2529                 return -EOPNOTSUPP;
2530         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2531                 return -EOPNOTSUPP;
2532         }
2533
2534         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2535                                        IPA_CMD_ASS_ARP_ADD_ENTRY,
2536                                        sizeof(struct qeth_arp_cache_entry),
2537                                        QETH_PROT_IPV4);
2538         rc = qeth_l3_send_setassparms(card, iob,
2539                                    sizeof(struct qeth_arp_cache_entry),
2540                                    (unsigned long) entry,
2541                                    qeth_l3_default_setassparms_cb, NULL);
2542         if (rc) {
2543                 tmp = rc;
2544                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2545                 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s "
2546                         "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2547                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2548         }
2549         return rc;
2550 }
2551
2552 static int qeth_l3_arp_remove_entry(struct qeth_card *card,
2553                                 struct qeth_arp_cache_entry *entry)
2554 {
2555         struct qeth_cmd_buffer *iob;
2556         char buf[16] = {0, };
2557         int tmp;
2558         int rc;
2559
2560         QETH_DBF_TEXT(TRACE, 3, "arprment");
2561
2562         /*
2563          * currently GuestLAN only supports the ARP assist function
2564          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY;
2565          * thus we say EOPNOTSUPP for this ARP function
2566          */
2567         if (card->info.guestlan)
2568                 return -EOPNOTSUPP;
2569         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2570                 return -EOPNOTSUPP;
2571         }
2572         memcpy(buf, entry, 12);
2573         iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
2574                                        IPA_CMD_ASS_ARP_REMOVE_ENTRY,
2575                                        12,
2576                                        QETH_PROT_IPV4);
2577         rc = qeth_l3_send_setassparms(card, iob,
2578                                    12, (unsigned long)buf,
2579                                    qeth_l3_default_setassparms_cb, NULL);
2580         if (rc) {
2581                 tmp = rc;
2582                 memset(buf, 0, 16);
2583                 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf);
2584                 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s"
2585                         " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card),
2586                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2587         }
2588         return rc;
2589 }
2590
2591 static int qeth_l3_arp_flush_cache(struct qeth_card *card)
2592 {
2593         int rc;
2594         int tmp;
2595
2596         QETH_DBF_TEXT(TRACE, 3, "arpflush");
2597
2598         /*
2599          * currently GuestLAN only supports the ARP assist function
2600          * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE;
2601          * thus we say EOPNOTSUPP for this ARP function
2602         */
2603         if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD))
2604                 return -EOPNOTSUPP;
2605         if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) {
2606                 return -EOPNOTSUPP;
2607         }
2608         rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING,
2609                                           IPA_CMD_ASS_ARP_FLUSH_CACHE, 0);
2610         if (rc) {
2611                 tmp = rc;
2612                 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s "
2613                         "(0x%x/%d)\n", QETH_CARD_IFNAME(card),
2614                         qeth_l3_arp_get_error_cause(&rc), tmp, tmp);
2615         }
2616         return rc;
2617 }
2618
2619 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
2620 {
2621         struct qeth_card *card = dev->ml_priv;
2622         struct qeth_arp_cache_entry arp_entry;
2623         struct mii_ioctl_data *mii_data;
2624         int rc = 0;
2625
2626         if (!card)
2627                 return -ENODEV;
2628
2629         if ((card->state != CARD_STATE_UP) &&
2630                 (card->state != CARD_STATE_SOFTSETUP))
2631                 return -ENODEV;
2632
2633         switch (cmd) {
2634         case SIOC_QETH_ARP_SET_NO_ENTRIES:
2635                 if (!capable(CAP_NET_ADMIN)) {
2636                         rc = -EPERM;
2637                         break;
2638                 }
2639                 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue);
2640                 break;
2641         case SIOC_QETH_ARP_QUERY_INFO:
2642                 if (!capable(CAP_NET_ADMIN)) {
2643                         rc = -EPERM;
2644                         break;
2645                 }
2646                 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data);
2647                 break;
2648         case SIOC_QETH_ARP_ADD_ENTRY:
2649                 if (!capable(CAP_NET_ADMIN)) {
2650                         rc = -EPERM;
2651                         break;
2652                 }
2653                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2654                                    sizeof(struct qeth_arp_cache_entry)))
2655                         rc = -EFAULT;
2656                 else
2657                         rc = qeth_l3_arp_add_entry(card, &arp_entry);
2658                 break;
2659         case SIOC_QETH_ARP_REMOVE_ENTRY:
2660                 if (!capable(CAP_NET_ADMIN)) {
2661                         rc = -EPERM;
2662                         break;
2663                 }
2664                 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data,
2665                                    sizeof(struct qeth_arp_cache_entry)))
2666                         rc = -EFAULT;
2667                 else
2668                         rc = qeth_l3_arp_remove_entry(card, &arp_entry);
2669                 break;
2670         case SIOC_QETH_ARP_FLUSH_CACHE:
2671                 if (!capable(CAP_NET_ADMIN)) {
2672                         rc = -EPERM;
2673                         break;
2674                 }
2675                 rc = qeth_l3_arp_flush_cache(card);
2676                 break;
2677         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
2678                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
2679                 break;
2680         case SIOC_QETH_GET_CARD_TYPE:
2681                 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
2682                     !card->info.guestlan)
2683                         return 1;
2684                 return 0;
2685                 break;
2686         case SIOCGMIIPHY:
2687                 mii_data = if_mii(rq);
2688                 mii_data->phy_id = 0;
2689                 break;
2690         case SIOCGMIIREG:
2691                 mii_data = if_mii(rq);
2692                 if (mii_data->phy_id != 0)
2693                         rc = -EINVAL;
2694                 else
2695                         mii_data->val_out = qeth_mdio_read(dev,
2696                                                         mii_data->phy_id,
2697                                                         mii_data->reg_num);
2698                 break;
2699         default:
2700                 rc = -EOPNOTSUPP;
2701         }
2702         if (rc)
2703                 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
2704         return rc;
2705 }
2706
2707 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
2708 {
2709         int cast_type = RTN_UNSPEC;
2710
2711         if (skb_dst(skb) && skb_dst(skb)->neighbour) {
2712                 cast_type = skb_dst(skb)->neighbour->type;
2713                 if ((cast_type == RTN_BROADCAST) ||
2714                     (cast_type == RTN_MULTICAST) ||
2715                     (cast_type == RTN_ANYCAST))
2716                         return cast_type;
2717                 else
2718                         return RTN_UNSPEC;
2719         }
2720         /* try something else */
2721         if (skb->protocol == ETH_P_IPV6)
2722                 return (skb_network_header(skb)[24] == 0xff) ?
2723                                 RTN_MULTICAST : 0;
2724         else if (skb->protocol == ETH_P_IP)
2725                 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ?
2726                                 RTN_MULTICAST : 0;
2727         /* ... */
2728         if (!memcmp(skb->data, skb->dev->broadcast, 6))
2729                 return RTN_BROADCAST;
2730         else {
2731                 u16 hdr_mac;
2732
2733                 hdr_mac = *((u16 *)skb->data);
2734                 /* tr multicast? */
2735                 switch (card->info.link_type) {
2736                 case QETH_LINK_TYPE_HSTR:
2737                 case QETH_LINK_TYPE_LANE_TR:
2738                         if ((hdr_mac == QETH_TR_MAC_NC) ||
2739                             (hdr_mac == QETH_TR_MAC_C))
2740                                 return RTN_MULTICAST;
2741                         break;
2742                 /* eth or so multicast? */
2743                 default:
2744                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
2745                             (hdr_mac == QETH_ETH_MAC_V6))
2746                                 return RTN_MULTICAST;
2747                 }
2748         }
2749         return cast_type;
2750 }
2751
2752 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
2753                 struct sk_buff *skb, int ipv, int cast_type)
2754 {
2755         memset(hdr, 0, sizeof(struct qeth_hdr));
2756         hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
2757         hdr->hdr.l3.ext_flags = 0;
2758
2759         /*
2760          * before we're going to overwrite this location with next hop ip.
2761          * v6 uses passthrough, v4 sets the tag in the QDIO header.
2762          */
2763         if (card->vlangrp && vlan_tx_tag_present(skb)) {
2764                 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD))
2765                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME;
2766                 else
2767                         hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG;
2768                 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb);
2769         }
2770
2771         hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
2772         if (ipv == 4) {
2773                 /* IPv4 */
2774                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
2775                 memset(hdr->hdr.l3.dest_addr, 0, 12);
2776                 if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
2777                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2778                             *((u32 *) skb_dst(skb)->neighbour->primary_key);
2779                 } else {
2780                         /* fill in destination address used in ip header */
2781                         *((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
2782                                                         ip_hdr(skb)->daddr;
2783                 }
2784         } else if (ipv == 6) {
2785                 /* IPv6 */
2786                 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
2787                 if (card->info.type == QETH_CARD_TYPE_IQD)
2788                         hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
2789                 if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
2790                         memcpy(hdr->hdr.l3.dest_addr,
2791                                skb_dst(skb)->neighbour->primary_key, 16);
2792                 } else {
2793                         /* fill in destination address used in ip header */
2794                         memcpy(hdr->hdr.l3.dest_addr,
2795                                &ipv6_hdr(skb)->daddr, 16);
2796                 }
2797         } else {
2798                 /* passthrough */
2799                 if ((skb->dev->type == ARPHRD_IEEE802_TR) &&
2800                         !memcmp(skb->data + sizeof(struct qeth_hdr) +
2801                         sizeof(__u16), skb->dev->broadcast, 6)) {
2802                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2803                                                 QETH_HDR_PASSTHRU;
2804                 } else if (!memcmp(skb->data + sizeof(struct qeth_hdr),
2805                             skb->dev->broadcast, 6)) {
2806                         /* broadcast? */
2807                         hdr->hdr.l3.flags = QETH_CAST_BROADCAST |
2808                                                 QETH_HDR_PASSTHRU;
2809                 } else {
2810                         hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ?
2811                                 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU :
2812                                 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU;
2813                 }
2814         }
2815 }
2816
2817 static void qeth_tso_fill_header(struct qeth_card *card,
2818                 struct qeth_hdr *qhdr, struct sk_buff *skb)
2819 {
2820         struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr;
2821         struct tcphdr *tcph = tcp_hdr(skb);
2822         struct iphdr *iph = ip_hdr(skb);
2823         struct ipv6hdr *ip6h = ipv6_hdr(skb);
2824
2825         /*fix header to TSO values ...*/
2826         hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO;
2827         /*set values which are fix for the first approach ...*/
2828         hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso);
2829         hdr->ext.imb_hdr_no  = 1;
2830         hdr->ext.hdr_type    = 1;
2831         hdr->ext.hdr_version = 1;
2832         hdr->ext.hdr_len     = 28;
2833         /*insert non-fix values */
2834         hdr->ext.mss = skb_shinfo(skb)->gso_size;
2835         hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4);
2836         hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len -
2837                                        sizeof(struct qeth_hdr_tso));
2838         tcph->check = 0;
2839         if (skb->protocol == ETH_P_IPV6) {
2840                 ip6h->payload_len = 0;
2841                 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr,
2842                                                0, IPPROTO_TCP, 0);
2843         } else {
2844                 /*OSA want us to set these values ...*/
2845                 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
2846                                          0, IPPROTO_TCP, 0);
2847                 iph->tot_len = 0;
2848                 iph->check = 0;
2849         }
2850 }
2851
2852 static void qeth_tx_csum(struct sk_buff *skb)
2853 {
2854         __wsum csum;
2855         int offset;
2856
2857         skb_set_transport_header(skb, skb->csum_start - skb_headroom(skb));
2858         offset = skb->csum_start - skb_headroom(skb);
2859         BUG_ON(offset >= skb_headlen(skb));
2860         csum = skb_checksum(skb, offset, skb->len - offset, 0);
2861
2862         offset += skb->csum_offset;
2863         BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb));
2864         *(__sum16 *)(skb->data + offset) = csum_fold(csum);
2865 }
2866
2867 static inline int qeth_l3_tso_elements(struct sk_buff *skb)
2868 {
2869         unsigned long tcpd = (unsigned long)tcp_hdr(skb) +
2870                 tcp_hdr(skb)->doff * 4;
2871         int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data);
2872         int elements = PFN_UP(tcpd + tcpd_len) - PFN_DOWN(tcpd);
2873         elements += skb_shinfo(skb)->nr_frags;
2874         return elements;
2875 }
2876
2877 static inline int qeth_l3_tso_check(struct sk_buff *skb)
2878 {
2879         int len = ((unsigned long)tcp_hdr(skb) + tcp_hdr(skb)->doff * 4) -
2880                 (unsigned long)skb->data;
2881         return (((unsigned long)skb->data & PAGE_MASK) !=
2882                 (((unsigned long)skb->data + len) & PAGE_MASK));
2883 }
2884
2885 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
2886 {
2887         int rc;
2888         u16 *tag;
2889         struct qeth_hdr *hdr = NULL;
2890         int elements_needed = 0;
2891         int elems;
2892         struct qeth_card *card = dev->ml_priv;
2893         struct sk_buff *new_skb = NULL;
2894         int ipv = qeth_get_ip_version(skb);
2895         int cast_type = qeth_l3_get_cast_type(card, skb);
2896         struct qeth_qdio_out_q *queue = card->qdio.out_qs
2897                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
2898         int tx_bytes = skb->len;
2899         enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO;
2900         int data_offset = -1;
2901         int nr_frags;
2902
2903         if ((card->info.type == QETH_CARD_TYPE_IQD) &&
2904             (((skb->protocol != htons(ETH_P_IPV6)) &&
2905               (skb->protocol != htons(ETH_P_IP))) ||
2906              card->options.sniffer))
2907                         goto tx_drop;
2908
2909         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
2910                 card->stats.tx_carrier_errors++;
2911                 goto tx_drop;
2912         }
2913
2914         if ((cast_type == RTN_BROADCAST) &&
2915             (card->info.broadcast_capable == 0))
2916                 goto tx_drop;
2917
2918         if (card->options.performance_stats) {
2919                 card->perf_stats.outbound_cnt++;
2920                 card->perf_stats.outbound_start_time = qeth_get_micros();
2921         }
2922
2923         if (skb_is_gso(skb))
2924                 large_send = card->options.large_send;
2925         else
2926                 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2927                         qeth_tx_csum(skb);
2928                         if (card->options.performance_stats)
2929                                 card->perf_stats.tx_csum++;
2930                 }
2931
2932         if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) &&
2933             (skb_shinfo(skb)->nr_frags == 0)) {
2934                 new_skb = skb;
2935                 data_offset = ETH_HLEN;
2936                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
2937                 if (!hdr)
2938                         goto tx_drop;
2939                 elements_needed++;
2940         } else {
2941                 /* create a clone with writeable headroom */
2942                 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso)
2943                                         + VLAN_HLEN);
2944                 if (!new_skb)
2945                         goto tx_drop;
2946         }
2947
2948         if (card->info.type == QETH_CARD_TYPE_IQD) {
2949                 if (data_offset < 0)
2950                         skb_pull(new_skb, ETH_HLEN);
2951         } else {
2952                 if (new_skb->protocol == htons(ETH_P_IP)) {
2953                         if (card->dev->type == ARPHRD_IEEE802_TR)
2954                                 skb_pull(new_skb, TR_HLEN);
2955                         else
2956                                 skb_pull(new_skb, ETH_HLEN);
2957                 }
2958
2959                 if (new_skb->protocol == ETH_P_IPV6 && card->vlangrp &&
2960                                 vlan_tx_tag_present(new_skb)) {
2961                         skb_push(new_skb, VLAN_HLEN);
2962                         skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
2963                         skb_copy_to_linear_data_offset(new_skb, 4,
2964                                 new_skb->data + 8, 4);
2965                         skb_copy_to_linear_data_offset(new_skb, 8,
2966                                 new_skb->data + 12, 4);
2967                         tag = (u16 *)(new_skb->data + 12);
2968                         *tag = __constant_htons(ETH_P_8021Q);
2969                         *(tag + 1) = htons(vlan_tx_tag_get(new_skb));
2970                         new_skb->vlan_tci = 0;
2971                 }
2972         }
2973
2974         netif_stop_queue(dev);
2975
2976         /* fix hardware limitation: as long as we do not have sbal
2977          * chaining we can not send long frag lists
2978          */
2979         if (large_send == QETH_LARGE_SEND_TSO) {
2980                 if (qeth_l3_tso_elements(new_skb) + 1 > 16) {
2981                         if (skb_linearize(new_skb))
2982                                 goto tx_drop;
2983                         if (card->options.performance_stats)
2984                                 card->perf_stats.tx_lin++;
2985                 }
2986         }
2987
2988         if ((large_send == QETH_LARGE_SEND_TSO) &&
2989             (cast_type == RTN_UNSPEC)) {
2990                 hdr = (struct qeth_hdr *)skb_push(new_skb,
2991                                                 sizeof(struct qeth_hdr_tso));
2992                 if (qeth_l3_tso_check(new_skb))
2993                         QETH_DBF_MESSAGE(2, "tso skb misaligned\n");
2994                 memset(hdr, 0, sizeof(struct qeth_hdr_tso));
2995                 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type);
2996                 qeth_tso_fill_header(card, hdr, new_skb);
2997                 elements_needed++;
2998         } else {
2999                 if (data_offset < 0) {
3000                         hdr = (struct qeth_hdr *)skb_push(new_skb,
3001                                                 sizeof(struct qeth_hdr));
3002                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3003                                                 cast_type);
3004                 } else {
3005                         qeth_l3_fill_header(card, hdr, new_skb, ipv,
3006                                                 cast_type);
3007                         hdr->hdr.l3.length = new_skb->len - data_offset;
3008                 }
3009         }
3010
3011         elems = qeth_get_elements_no(card, (void *)hdr, new_skb,
3012                                                  elements_needed);
3013         if (!elems) {
3014                 if (data_offset >= 0)
3015                         kmem_cache_free(qeth_core_header_cache, hdr);
3016                 goto tx_drop;
3017         }
3018         elements_needed += elems;
3019         nr_frags = skb_shinfo(new_skb)->nr_frags;
3020
3021         if (card->info.type != QETH_CARD_TYPE_IQD)
3022                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
3023                                          elements_needed);
3024         else
3025                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
3026                                         elements_needed, data_offset, 0);
3027
3028         if (!rc) {
3029                 card->stats.tx_packets++;
3030                 card->stats.tx_bytes += tx_bytes;
3031                 if (new_skb != skb)
3032                         dev_kfree_skb_any(skb);
3033                 if (card->options.performance_stats) {
3034                         if (large_send != QETH_LARGE_SEND_NO) {
3035                                 card->perf_stats.large_send_bytes += tx_bytes;
3036                                 card->perf_stats.large_send_cnt++;
3037                         }
3038                         if (nr_frags) {
3039                                 card->perf_stats.sg_skbs_sent++;
3040                                 /* nr_frags + skb->data */
3041                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
3042                         }
3043                 }
3044                 rc = NETDEV_TX_OK;
3045         } else {
3046                 if (data_offset >= 0)
3047                         kmem_cache_free(qeth_core_header_cache, hdr);
3048
3049                 if (rc == -EBUSY) {
3050                         if (new_skb != skb)
3051                                 dev_kfree_skb_any(new_skb);
3052                         return NETDEV_TX_BUSY;
3053                 } else
3054                         goto tx_drop;
3055         }
3056
3057         netif_wake_queue(dev);
3058         if (card->options.performance_stats)
3059                 card->perf_stats.outbound_time += qeth_get_micros() -
3060                         card->perf_stats.outbound_start_time;
3061         return rc;
3062
3063 tx_drop:
3064         card->stats.tx_dropped++;
3065         card->stats.tx_errors++;
3066         if ((new_skb != skb) && new_skb)
3067                 dev_kfree_skb_any(new_skb);
3068         dev_kfree_skb_any(skb);
3069         netif_wake_queue(dev);
3070         return NETDEV_TX_OK;
3071 }
3072
3073 static int qeth_l3_open(struct net_device *dev)
3074 {
3075         struct qeth_card *card = dev->ml_priv;
3076
3077         QETH_DBF_TEXT(TRACE, 4, "qethopen");
3078         if (card->state != CARD_STATE_SOFTSETUP)
3079                 return -ENODEV;
3080         card->data.state = CH_STATE_UP;
3081         card->state = CARD_STATE_UP;
3082         netif_start_queue(dev);
3083
3084         if (!card->lan_online && netif_carrier_ok(dev))
3085                 netif_carrier_off(dev);
3086         return 0;
3087 }
3088
3089 static int qeth_l3_stop(struct net_device *dev)
3090 {
3091         struct qeth_card *card = dev->ml_priv;
3092
3093         QETH_DBF_TEXT(TRACE, 4, "qethstop");
3094         netif_tx_disable(dev);
3095         if (card->state == CARD_STATE_UP)
3096                 card->state = CARD_STATE_SOFTSETUP;
3097         return 0;
3098 }
3099
3100 static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev)
3101 {
3102         struct qeth_card *card = dev->ml_priv;
3103
3104         return (card->options.checksum_type == HW_CHECKSUMMING);
3105 }
3106
3107 static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data)
3108 {
3109         struct qeth_card *card = dev->ml_priv;
3110         enum qeth_checksum_types csum_type;
3111
3112         if (data)
3113                 csum_type = HW_CHECKSUMMING;
3114         else
3115                 csum_type = SW_CHECKSUMMING;
3116
3117         return qeth_l3_set_rx_csum(card, csum_type);
3118 }
3119
3120 static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data)
3121 {
3122         struct qeth_card *card = dev->ml_priv;
3123         int rc = 0;
3124
3125         if (data) {
3126                 rc = qeth_l3_set_large_send(card, QETH_LARGE_SEND_TSO);
3127         } else {
3128                 dev->features &= ~NETIF_F_TSO;
3129                 card->options.large_send = QETH_LARGE_SEND_NO;
3130         }
3131         return rc;
3132 }
3133
3134 static const struct ethtool_ops qeth_l3_ethtool_ops = {
3135         .get_link = ethtool_op_get_link,
3136         .get_tx_csum = ethtool_op_get_tx_csum,
3137         .set_tx_csum = ethtool_op_set_tx_hw_csum,
3138         .get_rx_csum = qeth_l3_ethtool_get_rx_csum,
3139         .set_rx_csum = qeth_l3_ethtool_set_rx_csum,
3140         .get_sg      = ethtool_op_get_sg,
3141         .set_sg      = ethtool_op_set_sg,
3142         .get_tso     = ethtool_op_get_tso,
3143         .set_tso     = qeth_l3_ethtool_set_tso,
3144         .get_strings = qeth_core_get_strings,
3145         .get_ethtool_stats = qeth_core_get_ethtool_stats,
3146         .get_sset_count = qeth_core_get_sset_count,
3147         .get_drvinfo = qeth_core_get_drvinfo,
3148         .get_settings = qeth_core_ethtool_get_settings,
3149 };
3150
3151 /*
3152  * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting
3153  * NOARP on the netdevice is no option because it also turns off neighbor
3154  * solicitation. For IPv4 we install a neighbor_setup function. We don't want
3155  * arp resolution but we want the hard header (packet socket will work
3156  * e.g. tcpdump)
3157  */
3158 static int qeth_l3_neigh_setup_noarp(struct neighbour *n)
3159 {
3160         n->nud_state = NUD_NOARP;
3161         memcpy(n->ha, "FAKELL", 6);
3162         n->output = n->ops->connected_output;
3163         return 0;
3164 }
3165
3166 static int
3167 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np)
3168 {
3169         if (np->tbl->family == AF_INET)
3170                 np->neigh_setup = qeth_l3_neigh_setup_noarp;
3171
3172         return 0;
3173 }
3174
3175 static const struct net_device_ops qeth_l3_netdev_ops = {
3176         .ndo_open               = qeth_l3_open,
3177         .ndo_stop               = qeth_l3_stop,
3178         .ndo_get_stats          = qeth_get_stats,
3179         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3180         .ndo_validate_addr      = eth_validate_addr,
3181         .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3182         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3183         .ndo_change_mtu         = qeth_change_mtu,
3184         .ndo_vlan_rx_register   = qeth_l3_vlan_rx_register,
3185         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3186         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3187         .ndo_tx_timeout         = qeth_tx_timeout,
3188 };
3189
3190 static const struct net_device_ops qeth_l3_osa_netdev_ops = {
3191         .ndo_open               = qeth_l3_open,
3192         .ndo_stop               = qeth_l3_stop,
3193         .ndo_get_stats          = qeth_get_stats,
3194         .ndo_start_xmit         = qeth_l3_hard_start_xmit,
3195         .ndo_validate_addr      = eth_validate_addr,
3196         .ndo_set_multicast_list = qeth_l3_set_multicast_list,
3197         .ndo_do_ioctl           = qeth_l3_do_ioctl,
3198         .ndo_change_mtu         = qeth_change_mtu,
3199         .ndo_vlan_rx_register   = qeth_l3_vlan_rx_register,
3200         .ndo_vlan_rx_add_vid    = qeth_l3_vlan_rx_add_vid,
3201         .ndo_vlan_rx_kill_vid   = qeth_l3_vlan_rx_kill_vid,
3202         .ndo_tx_timeout         = qeth_tx_timeout,
3203         .ndo_neigh_setup        = qeth_l3_neigh_setup,
3204 };
3205
3206 static int qeth_l3_setup_netdev(struct qeth_card *card)
3207 {
3208         if (card->info.type == QETH_CARD_TYPE_OSAE) {
3209                 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) ||
3210                     (card->info.link_type == QETH_LINK_TYPE_HSTR)) {
3211 #ifdef CONFIG_TR
3212                         card->dev = alloc_trdev(0);
3213 #endif
3214                         if (!card->dev)
3215                                 return -ENODEV;
3216                         card->dev->netdev_ops = &qeth_l3_netdev_ops;
3217                 } else {
3218                         card->dev = alloc_etherdev(0);
3219                         if (!card->dev)
3220                                 return -ENODEV;
3221                         card->dev->netdev_ops = &qeth_l3_osa_netdev_ops;
3222
3223                         /*IPv6 address autoconfiguration stuff*/
3224                         qeth_l3_get_unique_id(card);
3225                         if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD))
3226                                 card->dev->dev_id = card->info.unique_id &
3227                                                          0xffff;
3228                 }
3229         } else if (card->info.type == QETH_CARD_TYPE_IQD) {
3230                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
3231                 if (!card->dev)
3232                         return -ENODEV;
3233                 card->dev->flags |= IFF_NOARP;
3234                 card->dev->netdev_ops = &qeth_l3_netdev_ops;
3235                 qeth_l3_iqd_read_initial_mac(card);
3236         } else
3237                 return -ENODEV;
3238
3239         card->dev->ml_priv = card;
3240         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
3241         card->dev->mtu = card->info.initial_mtu;
3242         SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops);
3243         card->dev->features |=  NETIF_F_HW_VLAN_TX |
3244                                 NETIF_F_HW_VLAN_RX |
3245                                 NETIF_F_HW_VLAN_FILTER;
3246         card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
3247         card->dev->gso_max_size = 15 * PAGE_SIZE;
3248
3249         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
3250         return register_netdev(card->dev);
3251 }
3252
3253 static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev,
3254                 unsigned int qdio_err, unsigned int queue, int first_element,
3255                 int count, unsigned long card_ptr)
3256 {
3257         struct net_device *net_dev;
3258         struct qeth_card *card;
3259         struct qeth_qdio_buffer *buffer;
3260         int index;
3261         int i;
3262
3263         card = (struct qeth_card *) card_ptr;
3264         net_dev = card->dev;
3265         if (card->options.performance_stats) {
3266                 card->perf_stats.inbound_cnt++;
3267                 card->perf_stats.inbound_start_time = qeth_get_micros();
3268         }
3269         if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
3270                 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
3271                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
3272                 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X",
3273                                 first_element, count);
3274                 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
3275                 qeth_schedule_recovery(card);
3276                 return;
3277         }
3278         for (i = first_element; i < (first_element + count); ++i) {
3279                 index = i % QDIO_MAX_BUFFERS_PER_Q;
3280                 buffer = &card->qdio.in_q->bufs[index];
3281                 if (!(qdio_err &&
3282                       qeth_check_qdio_errors(card, buffer->buffer,
3283                                              qdio_err, "qinerr")))
3284                         qeth_l3_process_inbound_buffer(card, buffer, index);
3285                 /* clear buffer and give back to hardware */
3286                 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
3287                 qeth_queue_input_buffer(card, index);
3288         }
3289         if (card->options.performance_stats)
3290                 card->perf_stats.inbound_time += qeth_get_micros() -
3291                         card->perf_stats.inbound_start_time;
3292 }
3293
3294 static int qeth_l3_probe_device(struct ccwgroup_device *gdev)
3295 {
3296         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3297
3298         qeth_l3_create_device_attributes(&gdev->dev);
3299         card->options.layer2 = 0;
3300         card->discipline.input_handler = (qdio_handler_t *)
3301                 qeth_l3_qdio_input_handler;
3302         card->discipline.output_handler = (qdio_handler_t *)
3303                 qeth_qdio_output_handler;
3304         card->discipline.recover = qeth_l3_recover;
3305         return 0;
3306 }
3307
3308 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
3309 {
3310         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3311
3312         qeth_set_allowed_threads(card, 0, 1);
3313         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3314
3315         if (cgdev->state == CCWGROUP_ONLINE) {
3316                 card->use_hard_stop = 1;
3317                 qeth_l3_set_offline(cgdev);
3318         }
3319
3320         if (card->dev) {
3321                 unregister_netdev(card->dev);
3322                 card->dev = NULL;
3323         }
3324
3325         qeth_l3_remove_device_attributes(&cgdev->dev);
3326         qeth_l3_clear_ip_list(card, 0, 0);
3327         qeth_l3_clear_ipato_list(card);
3328         return;
3329 }
3330
3331 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode)
3332 {
3333         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3334         int rc = 0;
3335         enum qeth_card_states recover_flag;
3336
3337         BUG_ON(!card);
3338         QETH_DBF_TEXT(SETUP, 2, "setonlin");
3339         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
3340
3341         qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
3342
3343         recover_flag = card->state;
3344         rc = qeth_core_hardsetup_card(card);
3345         if (rc) {
3346                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3347                 rc = -ENODEV;
3348                 goto out_remove;
3349         }
3350
3351         qeth_l3_query_ipassists(card, QETH_PROT_IPV4);
3352
3353         if (!card->dev && qeth_l3_setup_netdev(card)) {
3354                 rc = -ENODEV;
3355                 goto out_remove;
3356         }
3357
3358         card->state = CARD_STATE_HARDSETUP;
3359         qeth_print_status_message(card);
3360
3361         /* softsetup */
3362         QETH_DBF_TEXT(SETUP, 2, "softsetp");
3363
3364         rc = qeth_send_startlan(card);
3365         if (rc) {
3366                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3367                 if (rc == 0xe080) {
3368                         dev_warn(&card->gdev->dev,
3369                                 "The LAN is offline\n");
3370                         card->lan_online = 0;
3371                         return 0;
3372                 }
3373                 rc = -ENODEV;
3374                 goto out_remove;
3375         } else
3376                 card->lan_online = 1;
3377
3378         rc = qeth_l3_setadapter_parms(card);
3379         if (rc)
3380                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
3381         if (!card->options.sniffer) {
3382                 rc = qeth_l3_start_ipassists(card);
3383                 if (rc)
3384                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
3385                 qeth_l3_set_large_send(card, card->options.large_send);
3386                 rc = qeth_l3_setrouting_v4(card);
3387                 if (rc)
3388                         QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
3389                 rc = qeth_l3_setrouting_v6(card);
3390                 if (rc)
3391                         QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
3392         }
3393         netif_tx_disable(card->dev);
3394
3395         rc = qeth_init_qdio_queues(card);
3396         if (rc) {
3397                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
3398                 rc = -ENODEV;
3399                 goto out_remove;
3400         }
3401         card->state = CARD_STATE_SOFTSETUP;
3402         netif_carrier_on(card->dev);
3403
3404         qeth_set_allowed_threads(card, 0xffffffff, 0);
3405         qeth_l3_set_ip_addr_list(card);
3406         if (recover_flag == CARD_STATE_RECOVER) {
3407                 if (recovery_mode)
3408                         qeth_l3_open(card->dev);
3409                 else {
3410                         rtnl_lock();
3411                         dev_open(card->dev);
3412                         rtnl_unlock();
3413                 }
3414                 qeth_l3_set_multicast_list(card->dev);
3415         }
3416         /* let user_space know that device is online */
3417         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
3418         return 0;
3419 out_remove:
3420         card->use_hard_stop = 1;
3421         qeth_l3_stop_card(card, 0);
3422         ccw_device_set_offline(CARD_DDEV(card));
3423         ccw_device_set_offline(CARD_WDEV(card));
3424         ccw_device_set_offline(CARD_RDEV(card));
3425         if (recover_flag == CARD_STATE_RECOVER)
3426                 card->state = CARD_STATE_RECOVER;
3427         else
3428                 card->state = CARD_STATE_DOWN;
3429         return rc;
3430 }
3431
3432 static int qeth_l3_set_online(struct ccwgroup_device *gdev)
3433 {
3434         return __qeth_l3_set_online(gdev, 0);
3435 }
3436
3437 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev,
3438                         int recovery_mode)
3439 {
3440         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
3441         int rc = 0, rc2 = 0, rc3 = 0;
3442         enum qeth_card_states recover_flag;
3443
3444         QETH_DBF_TEXT(SETUP, 3, "setoffl");
3445         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
3446
3447         if (card->dev && netif_carrier_ok(card->dev))
3448                 netif_carrier_off(card->dev);
3449         recover_flag = card->state;
3450         qeth_l3_stop_card(card, recovery_mode);
3451         rc  = ccw_device_set_offline(CARD_DDEV(card));
3452         rc2 = ccw_device_set_offline(CARD_WDEV(card));
3453         rc3 = ccw_device_set_offline(CARD_RDEV(card));
3454         if (!rc)
3455                 rc = (rc2) ? rc2 : rc3;
3456         if (rc)
3457                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
3458         if (recover_flag == CARD_STATE_UP)
3459                 card->state = CARD_STATE_RECOVER;
3460         /* let user_space know that device is offline */
3461         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
3462         return 0;
3463 }
3464
3465 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev)
3466 {
3467         return __qeth_l3_set_offline(cgdev, 0);
3468 }
3469
3470 static int qeth_l3_recover(void *ptr)
3471 {
3472         struct qeth_card *card;
3473         int rc = 0;
3474
3475         card = (struct qeth_card *) ptr;
3476         QETH_DBF_TEXT(TRACE, 2, "recover1");
3477         QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
3478         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
3479                 return 0;
3480         QETH_DBF_TEXT(TRACE, 2, "recover2");
3481         dev_warn(&card->gdev->dev,
3482                 "A recovery process has been started for the device\n");
3483         card->use_hard_stop = 1;
3484         __qeth_l3_set_offline(card->gdev, 1);
3485         rc = __qeth_l3_set_online(card->gdev, 1);
3486         /* don't run another scheduled recovery */
3487         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
3488         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
3489         if (!rc)
3490                 dev_info(&card->gdev->dev,
3491                         "Device successfully recovered!\n");
3492         else {
3493                 rtnl_lock();
3494                 dev_close(card->dev);
3495                 rtnl_unlock();
3496                 dev_warn(&card->gdev->dev, "The qeth device driver "
3497                         "failed to recover an error on the device\n");
3498         }
3499         return 0;
3500 }
3501
3502 static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
3503 {
3504         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3505         qeth_l3_clear_ip_list(card, 0, 0);
3506         qeth_qdio_clear_card(card, 0);
3507         qeth_clear_qdio_buffers(card);
3508 }
3509
3510 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
3511 {
3512         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3513
3514         if (card->dev)
3515                 netif_device_detach(card->dev);
3516         qeth_set_allowed_threads(card, 0, 1);
3517         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
3518         if (gdev->state == CCWGROUP_OFFLINE)
3519                 return 0;
3520         if (card->state == CARD_STATE_UP) {
3521                 card->use_hard_stop = 1;
3522                 __qeth_l3_set_offline(card->gdev, 1);
3523         } else
3524                 __qeth_l3_set_offline(card->gdev, 0);
3525         return 0;
3526 }
3527
3528 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
3529 {
3530         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
3531         int rc = 0;
3532
3533         if (gdev->state == CCWGROUP_OFFLINE)
3534                 goto out;
3535
3536         if (card->state == CARD_STATE_RECOVER) {
3537                 rc = __qeth_l3_set_online(card->gdev, 1);
3538                 if (rc) {
3539                         if (card->dev) {
3540                                 rtnl_lock();
3541                                 dev_close(card->dev);
3542                                 rtnl_unlock();
3543                         }
3544                 }
3545         } else
3546                 rc = __qeth_l3_set_online(card->gdev, 0);
3547 out:
3548         qeth_set_allowed_threads(card, 0xffffffff, 0);
3549         if (card->dev)
3550                 netif_device_attach(card->dev);
3551         if (rc)
3552                 dev_warn(&card->gdev->dev, "The qeth device driver "
3553                         "failed to recover an error on the device\n");
3554         return rc;
3555 }
3556
3557 struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
3558         .probe = qeth_l3_probe_device,
3559         .remove = qeth_l3_remove_device,
3560         .set_online = qeth_l3_set_online,
3561         .set_offline = qeth_l3_set_offline,
3562         .shutdown = qeth_l3_shutdown,
3563         .freeze = qeth_l3_pm_suspend,
3564         .thaw = qeth_l3_pm_resume,
3565         .restore = qeth_l3_pm_resume,
3566 };
3567 EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);
3568
3569 static int qeth_l3_ip_event(struct notifier_block *this,
3570                             unsigned long event, void *ptr)
3571 {
3572         struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
3573         struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev;
3574         struct qeth_ipaddr *addr;
3575         struct qeth_card *card;
3576
3577         if (dev_net(dev) != &init_net)
3578                 return NOTIFY_DONE;
3579
3580         QETH_DBF_TEXT(TRACE, 3, "ipevent");
3581         card = qeth_l3_get_card_from_dev(dev);
3582         if (!card)
3583                 return NOTIFY_DONE;
3584
3585         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4);
3586         if (addr != NULL) {
3587                 addr->u.a4.addr = ifa->ifa_address;
3588                 addr->u.a4.mask = ifa->ifa_mask;
3589                 addr->type = QETH_IP_TYPE_NORMAL;
3590         } else
3591                 goto out;
3592
3593         switch (event) {
3594         case NETDEV_UP:
3595                 if (!qeth_l3_add_ip(card, addr))
3596                         kfree(addr);
3597                 break;
3598         case NETDEV_DOWN:
3599                 if (!qeth_l3_delete_ip(card, addr))
3600                         kfree(addr);
3601                 break;
3602         default:
3603                 break;
3604         }
3605         qeth_l3_set_ip_addr_list(card);
3606 out:
3607         return NOTIFY_DONE;
3608 }
3609
3610 static struct notifier_block qeth_l3_ip_notifier = {
3611         qeth_l3_ip_event,
3612         NULL,
3613 };
3614
3615 #ifdef CONFIG_QETH_IPV6
3616 /**
3617  * IPv6 event handler
3618  */
3619 static int qeth_l3_ip6_event(struct notifier_block *this,
3620                              unsigned long event, void *ptr)
3621 {
3622         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
3623         struct net_device *dev = (struct net_device *)ifa->idev->dev;
3624         struct qeth_ipaddr *addr;
3625         struct qeth_card *card;
3626
3627         QETH_DBF_TEXT(TRACE, 3, "ip6event");
3628
3629         card = qeth_l3_get_card_from_dev(dev);
3630         if (!card)
3631                 return NOTIFY_DONE;
3632         if (!qeth_is_supported(card, IPA_IPV6))
3633                 return NOTIFY_DONE;
3634
3635         addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6);
3636         if (addr != NULL) {
3637                 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr));
3638                 addr->u.a6.pfxlen = ifa->prefix_len;
3639                 addr->type = QETH_IP_TYPE_NORMAL;
3640         } else
3641                 goto out;
3642
3643         switch (event) {
3644         case NETDEV_UP:
3645                 if (!qeth_l3_add_ip(card, addr))
3646                         kfree(addr);
3647                 break;
3648         case NETDEV_DOWN:
3649                 if (!qeth_l3_delete_ip(card, addr))
3650                         kfree(addr);
3651                 break;
3652         default:
3653                 break;
3654         }
3655         qeth_l3_set_ip_addr_list(card);
3656 out:
3657         return NOTIFY_DONE;
3658 }
3659
3660 static struct notifier_block qeth_l3_ip6_notifier = {
3661         qeth_l3_ip6_event,
3662         NULL,
3663 };
3664 #endif
3665
3666 static int qeth_l3_register_notifiers(void)
3667 {
3668         int rc;
3669
3670         QETH_DBF_TEXT(TRACE, 5, "regnotif");
3671         rc = register_inetaddr_notifier(&qeth_l3_ip_notifier);
3672         if (rc)
3673                 return rc;
3674 #ifdef CONFIG_QETH_IPV6
3675         rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier);
3676         if (rc) {
3677                 unregister_inetaddr_notifier(&qeth_l3_ip_notifier);
3678                 return rc;
3679         }
3680 #else
3681         pr_warning("There is no IPv6 support for the layer 3 discipline\n");
3682 #endif
3683         return 0;
3684 }
3685
3686 static void qeth_l3_unregister_notifiers(void)
3687 {
3688
3689         QETH_DBF_TEXT(TRACE, 5, "unregnot");
3690         BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier));
3691 #ifdef CONFIG_QETH_IPV6
3692         BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier));
3693 #endif /* QETH_IPV6 */
3694 }
3695
3696 static int __init qeth_l3_init(void)
3697 {
3698         int rc = 0;
3699
3700         pr_info("register layer 3 discipline\n");
3701         rc = qeth_l3_register_notifiers();
3702         return rc;
3703 }
3704
3705 static void __exit qeth_l3_exit(void)
3706 {
3707         qeth_l3_unregister_notifiers();
3708         pr_info("unregister layer 3 discipline\n");
3709 }
3710
3711 module_init(qeth_l3_init);
3712 module_exit(qeth_l3_exit);
3713 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
3714 MODULE_DESCRIPTION("qeth layer 3 discipline");
3715 MODULE_LICENSE("GPL");