1 /* 2 * Copyright IBM Corp. 2007, 2009 3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 4 * Frank Pavlic <fpavlic@de.ibm.com>, 5 * Thomas Spatzier <tspat@de.ibm.com>, 6 * Frank Blaschka <frank.blaschka@de.ibm.com> 7 */ 8 9 #define KMSG_COMPONENT "qeth" 10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 11 12 #include <linux/module.h> 13 #include <linux/moduleparam.h> 14 #include <linux/bitops.h> 15 #include <linux/string.h> 16 #include <linux/errno.h> 17 #include <linux/kernel.h> 18 #include <linux/etherdevice.h> 19 #include <linux/mii.h> 20 #include <linux/ip.h> 21 #include <linux/ipv6.h> 22 #include <linux/inetdevice.h> 23 #include <linux/igmp.h> 24 #include <linux/slab.h> 25 #include <linux/if_vlan.h> 26 27 #include <net/ip.h> 28 #include <net/arp.h> 29 #include <net/route.h> 30 #include <net/ip6_fib.h> 31 #include <net/ip6_checksum.h> 32 #include <net/iucv/af_iucv.h> 33 34 #include "qeth_l3.h" 35 36 37 static int qeth_l3_set_offline(struct ccwgroup_device *); 38 static int qeth_l3_recover(void *); 39 static int qeth_l3_stop(struct net_device *); 40 static void qeth_l3_set_multicast_list(struct net_device *); 41 static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *); 42 static int qeth_l3_register_addr_entry(struct qeth_card *, 43 struct qeth_ipaddr *); 44 static int qeth_l3_deregister_addr_entry(struct qeth_card *, 45 struct qeth_ipaddr *); 46 static int __qeth_l3_set_online(struct ccwgroup_device *, int); 47 static int __qeth_l3_set_offline(struct ccwgroup_device *, int); 48 49 static int qeth_l3_isxdigit(char *buf) 50 { 51 while (*buf) { 52 if (!isxdigit(*buf++)) 53 return 0; 54 } 55 return 1; 56 } 57 58 void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf) 59 { 60 sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]); 61 } 62 63 int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr) 64 { 65 int count = 0, rc = 0; 66 int in[4]; 67 char c; 68 69 rc = sscanf(buf, "%u.%u.%u.%u%c", 70 &in[0], &in[1], &in[2], &in[3], &c); 71 if (rc != 4 && (rc != 5 || c != '\n')) 72 return -EINVAL; 73 for (count = 0; count < 4; count++) { 74 if (in[count] > 255) 75 return -EINVAL; 76 addr[count] = in[count]; 77 } 78 return 0; 79 } 80 81 void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf) 82 { 83 sprintf(buf, "%pI6", addr); 84 } 85 86 int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr) 87 { 88 const char *end, *end_tmp, *start; 89 __u16 *in; 90 char num[5]; 91 int num2, cnt, out, found, save_cnt; 92 unsigned short in_tmp[8] = {0, }; 93 94 cnt = out = found = save_cnt = num2 = 0; 95 end = start = buf; 96 in = (__u16 *) addr; 97 memset(in, 0, 16); 98 while (*end) { 99 end = strchr(start, ':'); 100 if (end == NULL) { 101 end = buf + strlen(buf); 102 end_tmp = strchr(start, '\n'); 103 if (end_tmp != NULL) 104 end = end_tmp; 105 out = 1; 106 } 107 if ((end - start)) { 108 memset(num, 0, 5); 109 if ((end - start) > 4) 110 return -EINVAL; 111 memcpy(num, start, end - start); 112 if (!qeth_l3_isxdigit(num)) 113 return -EINVAL; 114 sscanf(start, "%x", &num2); 115 if (found) 116 in_tmp[save_cnt++] = num2; 117 else 118 in[cnt++] = num2; 119 if (out) 120 break; 121 } else { 122 if (found) 123 return -EINVAL; 124 found = 1; 125 } 126 start = ++end; 127 } 128 if (cnt + save_cnt > 8) 129 return -EINVAL; 130 cnt = 7; 131 while (save_cnt) 132 in[cnt--] = in_tmp[--save_cnt]; 133 return 0; 134 } 135 136 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr, 137 char *buf) 138 { 139 if (proto == QETH_PROT_IPV4) 140 qeth_l3_ipaddr4_to_string(addr, buf); 141 else if (proto == QETH_PROT_IPV6) 142 qeth_l3_ipaddr6_to_string(addr, buf); 143 } 144 145 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto, 146 __u8 *addr) 147 { 148 if (proto == QETH_PROT_IPV4) 149 return qeth_l3_string_to_ipaddr4(buf, addr); 150 else if (proto == QETH_PROT_IPV6) 151 return qeth_l3_string_to_ipaddr6(buf, addr); 152 else 153 return -EINVAL; 154 } 155 156 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len) 157 { 158 int i, j; 159 u8 octet; 160 161 for (i = 0; i < len; ++i) { 162 octet = addr[i]; 163 for (j = 7; j >= 0; --j) { 164 bits[i*8 + j] = octet & 1; 165 octet >>= 1; 166 } 167 } 168 } 169 170 int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, 171 struct qeth_ipaddr *addr) 172 { 173 struct qeth_ipato_entry *ipatoe; 174 u8 addr_bits[128] = {0, }; 175 u8 ipatoe_bits[128] = {0, }; 176 int rc = 0; 177 178 if (!card->ipato.enabled) 179 return 0; 180 181 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits, 182 (addr->proto == QETH_PROT_IPV4)? 4:16); 183 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 184 if (addr->proto != ipatoe->proto) 185 continue; 186 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits, 187 (ipatoe->proto == QETH_PROT_IPV4) ? 188 4 : 16); 189 if (addr->proto == QETH_PROT_IPV4) 190 rc = !memcmp(addr_bits, ipatoe_bits, 191 min(32, ipatoe->mask_bits)); 192 else 193 rc = !memcmp(addr_bits, ipatoe_bits, 194 min(128, ipatoe->mask_bits)); 195 if (rc) 196 break; 197 } 198 /* invert? */ 199 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4) 200 rc = !rc; 201 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6) 202 rc = !rc; 203 204 return rc; 205 } 206 207 /* 208 * Add IP to be added to todo list. If there is already an "add todo" 209 * in this list we just incremenent the reference count. 210 * Returns 0 if we just incremented reference count. 211 */ 212 static int __qeth_l3_insert_ip_todo(struct qeth_card *card, 213 struct qeth_ipaddr *addr, int add) 214 { 215 struct qeth_ipaddr *tmp, *t; 216 int found = 0; 217 218 if (card->options.sniffer) 219 return 0; 220 list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) { 221 if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) && 222 (tmp->type == QETH_IP_TYPE_DEL_ALL_MC)) 223 return 0; 224 if ((tmp->proto == QETH_PROT_IPV4) && 225 (addr->proto == QETH_PROT_IPV4) && 226 (tmp->type == addr->type) && 227 (tmp->is_multicast == addr->is_multicast) && 228 (tmp->u.a4.addr == addr->u.a4.addr) && 229 (tmp->u.a4.mask == addr->u.a4.mask)) { 230 found = 1; 231 break; 232 } 233 if ((tmp->proto == QETH_PROT_IPV6) && 234 (addr->proto == QETH_PROT_IPV6) && 235 (tmp->type == addr->type) && 236 (tmp->is_multicast == addr->is_multicast) && 237 (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) && 238 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr, 239 sizeof(struct in6_addr)) == 0)) { 240 found = 1; 241 break; 242 } 243 } 244 if (found) { 245 if (addr->users != 0) 246 tmp->users += addr->users; 247 else 248 tmp->users += add ? 1 : -1; 249 if (tmp->users == 0) { 250 list_del(&tmp->entry); 251 kfree(tmp); 252 } 253 return 0; 254 } else { 255 if (addr->type == QETH_IP_TYPE_DEL_ALL_MC) 256 list_add(&addr->entry, card->ip_tbd_list); 257 else { 258 if (addr->users == 0) 259 addr->users += add ? 1 : -1; 260 if (add && (addr->type == QETH_IP_TYPE_NORMAL) && 261 qeth_l3_is_addr_covered_by_ipato(card, addr)) { 262 QETH_CARD_TEXT(card, 2, "tkovaddr"); 263 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG; 264 } 265 list_add_tail(&addr->entry, card->ip_tbd_list); 266 } 267 return 1; 268 } 269 } 270 271 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr) 272 { 273 unsigned long flags; 274 int rc = 0; 275 276 QETH_CARD_TEXT(card, 4, "delip"); 277 278 if (addr->proto == QETH_PROT_IPV4) 279 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4); 280 else { 281 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8); 282 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8); 283 } 284 spin_lock_irqsave(&card->ip_lock, flags); 285 rc = __qeth_l3_insert_ip_todo(card, addr, 0); 286 spin_unlock_irqrestore(&card->ip_lock, flags); 287 return rc; 288 } 289 290 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr) 291 { 292 unsigned long flags; 293 int rc = 0; 294 295 QETH_CARD_TEXT(card, 4, "addip"); 296 if (addr->proto == QETH_PROT_IPV4) 297 QETH_CARD_HEX(card, 4, &addr->u.a4.addr, 4); 298 else { 299 QETH_CARD_HEX(card, 4, &addr->u.a6.addr, 8); 300 QETH_CARD_HEX(card, 4, ((char *)&addr->u.a6.addr) + 8, 8); 301 } 302 spin_lock_irqsave(&card->ip_lock, flags); 303 rc = __qeth_l3_insert_ip_todo(card, addr, 1); 304 spin_unlock_irqrestore(&card->ip_lock, flags); 305 return rc; 306 } 307 308 309 struct qeth_ipaddr *qeth_l3_get_addr_buffer( 310 enum qeth_prot_versions prot) 311 { 312 struct qeth_ipaddr *addr; 313 314 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC); 315 if (addr == NULL) { 316 return NULL; 317 } 318 addr->type = QETH_IP_TYPE_NORMAL; 319 addr->proto = prot; 320 return addr; 321 } 322 323 static void qeth_l3_delete_mc_addresses(struct qeth_card *card) 324 { 325 struct qeth_ipaddr *iptodo; 326 unsigned long flags; 327 328 QETH_CARD_TEXT(card, 4, "delmc"); 329 iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 330 if (!iptodo) { 331 QETH_CARD_TEXT(card, 2, "dmcnomem"); 332 return; 333 } 334 iptodo->type = QETH_IP_TYPE_DEL_ALL_MC; 335 spin_lock_irqsave(&card->ip_lock, flags); 336 if (!__qeth_l3_insert_ip_todo(card, iptodo, 0)) 337 kfree(iptodo); 338 spin_unlock_irqrestore(&card->ip_lock, flags); 339 } 340 341 /* 342 * Add/remove address to/from card's ip list, i.e. try to add or remove 343 * reference to/from an IP address that is already registered on the card. 344 * Returns: 345 * 0 address was on card and its reference count has been adjusted, 346 * but is still > 0, so nothing has to be done 347 * also returns 0 if card was not on card and the todo was to delete 348 * the address -> there is also nothing to be done 349 * 1 address was not on card and the todo is to add it to the card's ip 350 * list 351 * -1 address was on card and its reference count has been decremented 352 * to <= 0 by the todo -> address must be removed from card 353 */ 354 static int __qeth_l3_ref_ip_on_card(struct qeth_card *card, 355 struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr) 356 { 357 struct qeth_ipaddr *addr; 358 int found = 0; 359 360 list_for_each_entry(addr, &card->ip_list, entry) { 361 if ((addr->proto == QETH_PROT_IPV4) && 362 (todo->proto == QETH_PROT_IPV4) && 363 (addr->type == todo->type) && 364 (addr->u.a4.addr == todo->u.a4.addr) && 365 (addr->u.a4.mask == todo->u.a4.mask)) { 366 found = 1; 367 break; 368 } 369 if ((addr->proto == QETH_PROT_IPV6) && 370 (todo->proto == QETH_PROT_IPV6) && 371 (addr->type == todo->type) && 372 (addr->u.a6.pfxlen == todo->u.a6.pfxlen) && 373 (memcmp(&addr->u.a6.addr, &todo->u.a6.addr, 374 sizeof(struct in6_addr)) == 0)) { 375 found = 1; 376 break; 377 } 378 } 379 if (found) { 380 addr->users += todo->users; 381 if (addr->users <= 0) { 382 *__addr = addr; 383 return -1; 384 } else { 385 /* for VIPA and RXIP limit refcount to 1 */ 386 if (addr->type != QETH_IP_TYPE_NORMAL) 387 addr->users = 1; 388 return 0; 389 } 390 } 391 if (todo->users > 0) { 392 /* for VIPA and RXIP limit refcount to 1 */ 393 if (todo->type != QETH_IP_TYPE_NORMAL) 394 todo->users = 1; 395 return 1; 396 } else 397 return 0; 398 } 399 400 static void __qeth_l3_delete_all_mc(struct qeth_card *card, 401 unsigned long *flags) 402 { 403 struct list_head fail_list; 404 struct qeth_ipaddr *addr, *tmp; 405 int rc; 406 407 INIT_LIST_HEAD(&fail_list); 408 again: 409 list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) { 410 if (addr->is_multicast) { 411 list_del(&addr->entry); 412 spin_unlock_irqrestore(&card->ip_lock, *flags); 413 rc = qeth_l3_deregister_addr_entry(card, addr); 414 spin_lock_irqsave(&card->ip_lock, *flags); 415 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) 416 kfree(addr); 417 else 418 list_add_tail(&addr->entry, &fail_list); 419 goto again; 420 } 421 } 422 list_splice(&fail_list, &card->ip_list); 423 } 424 425 void qeth_l3_set_ip_addr_list(struct qeth_card *card) 426 { 427 struct list_head *tbd_list; 428 struct qeth_ipaddr *todo, *addr; 429 unsigned long flags; 430 int rc; 431 432 QETH_CARD_TEXT(card, 2, "sdiplist"); 433 QETH_CARD_HEX(card, 2, &card, sizeof(void *)); 434 435 if ((card->state != CARD_STATE_UP && 436 card->state != CARD_STATE_SOFTSETUP) || card->options.sniffer) { 437 return; 438 } 439 440 spin_lock_irqsave(&card->ip_lock, flags); 441 tbd_list = card->ip_tbd_list; 442 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC); 443 if (!card->ip_tbd_list) { 444 QETH_CARD_TEXT(card, 0, "silnomem"); 445 card->ip_tbd_list = tbd_list; 446 spin_unlock_irqrestore(&card->ip_lock, flags); 447 return; 448 } else 449 INIT_LIST_HEAD(card->ip_tbd_list); 450 451 while (!list_empty(tbd_list)) { 452 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry); 453 list_del(&todo->entry); 454 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) { 455 __qeth_l3_delete_all_mc(card, &flags); 456 kfree(todo); 457 continue; 458 } 459 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr); 460 if (rc == 0) { 461 /* nothing to be done; only adjusted refcount */ 462 kfree(todo); 463 } else if (rc == 1) { 464 /* new entry to be added to on-card list */ 465 spin_unlock_irqrestore(&card->ip_lock, flags); 466 rc = qeth_l3_register_addr_entry(card, todo); 467 spin_lock_irqsave(&card->ip_lock, flags); 468 if (!rc || (rc == IPA_RC_LAN_OFFLINE)) 469 list_add_tail(&todo->entry, &card->ip_list); 470 else 471 kfree(todo); 472 } else if (rc == -1) { 473 /* on-card entry to be removed */ 474 list_del_init(&addr->entry); 475 spin_unlock_irqrestore(&card->ip_lock, flags); 476 rc = qeth_l3_deregister_addr_entry(card, addr); 477 spin_lock_irqsave(&card->ip_lock, flags); 478 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED)) 479 kfree(addr); 480 else 481 list_add_tail(&addr->entry, &card->ip_list); 482 kfree(todo); 483 } 484 } 485 spin_unlock_irqrestore(&card->ip_lock, flags); 486 kfree(tbd_list); 487 } 488 489 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover) 490 { 491 struct qeth_ipaddr *addr, *tmp; 492 unsigned long flags; 493 494 QETH_CARD_TEXT(card, 4, "clearip"); 495 if (recover && card->options.sniffer) 496 return; 497 spin_lock_irqsave(&card->ip_lock, flags); 498 /* clear todo list */ 499 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) { 500 list_del(&addr->entry); 501 kfree(addr); 502 } 503 504 while (!list_empty(&card->ip_list)) { 505 addr = list_entry(card->ip_list.next, 506 struct qeth_ipaddr, entry); 507 list_del_init(&addr->entry); 508 if (!recover || addr->is_multicast) { 509 kfree(addr); 510 continue; 511 } 512 list_add_tail(&addr->entry, card->ip_tbd_list); 513 } 514 spin_unlock_irqrestore(&card->ip_lock, flags); 515 } 516 517 static int qeth_l3_address_exists_in_list(struct list_head *list, 518 struct qeth_ipaddr *addr, int same_type) 519 { 520 struct qeth_ipaddr *tmp; 521 522 list_for_each_entry(tmp, list, entry) { 523 if ((tmp->proto == QETH_PROT_IPV4) && 524 (addr->proto == QETH_PROT_IPV4) && 525 ((same_type && (tmp->type == addr->type)) || 526 (!same_type && (tmp->type != addr->type))) && 527 (tmp->u.a4.addr == addr->u.a4.addr)) 528 return 1; 529 530 if ((tmp->proto == QETH_PROT_IPV6) && 531 (addr->proto == QETH_PROT_IPV6) && 532 ((same_type && (tmp->type == addr->type)) || 533 (!same_type && (tmp->type != addr->type))) && 534 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr, 535 sizeof(struct in6_addr)) == 0)) 536 return 1; 537 538 } 539 return 0; 540 } 541 542 static int qeth_l3_send_setdelmc(struct qeth_card *card, 543 struct qeth_ipaddr *addr, int ipacmd) 544 { 545 int rc; 546 struct qeth_cmd_buffer *iob; 547 struct qeth_ipa_cmd *cmd; 548 549 QETH_CARD_TEXT(card, 4, "setdelmc"); 550 551 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 552 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 553 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN); 554 if (addr->proto == QETH_PROT_IPV6) 555 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr, 556 sizeof(struct in6_addr)); 557 else 558 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4); 559 560 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 561 562 return rc; 563 } 564 565 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len) 566 { 567 int i, j; 568 for (i = 0; i < 16; i++) { 569 j = (len) - (i * 8); 570 if (j >= 8) 571 netmask[i] = 0xff; 572 else if (j > 0) 573 netmask[i] = (u8)(0xFF00 >> j); 574 else 575 netmask[i] = 0; 576 } 577 } 578 579 static int qeth_l3_send_setdelip(struct qeth_card *card, 580 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags) 581 { 582 int rc; 583 struct qeth_cmd_buffer *iob; 584 struct qeth_ipa_cmd *cmd; 585 __u8 netmask[16]; 586 587 QETH_CARD_TEXT(card, 4, "setdelip"); 588 QETH_CARD_TEXT_(card, 4, "flags%02X", flags); 589 590 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 591 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 592 if (addr->proto == QETH_PROT_IPV6) { 593 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr, 594 sizeof(struct in6_addr)); 595 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen); 596 memcpy(cmd->data.setdelip6.mask, netmask, 597 sizeof(struct in6_addr)); 598 cmd->data.setdelip6.flags = flags; 599 } else { 600 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4); 601 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4); 602 cmd->data.setdelip4.flags = flags; 603 } 604 605 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 606 607 return rc; 608 } 609 610 static int qeth_l3_send_setrouting(struct qeth_card *card, 611 enum qeth_routing_types type, enum qeth_prot_versions prot) 612 { 613 int rc; 614 struct qeth_ipa_cmd *cmd; 615 struct qeth_cmd_buffer *iob; 616 617 QETH_CARD_TEXT(card, 4, "setroutg"); 618 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot); 619 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 620 cmd->data.setrtg.type = (type); 621 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 622 623 return rc; 624 } 625 626 static void qeth_l3_correct_routing_type(struct qeth_card *card, 627 enum qeth_routing_types *type, enum qeth_prot_versions prot) 628 { 629 if (card->info.type == QETH_CARD_TYPE_IQD) { 630 switch (*type) { 631 case NO_ROUTER: 632 case PRIMARY_CONNECTOR: 633 case SECONDARY_CONNECTOR: 634 case MULTICAST_ROUTER: 635 return; 636 default: 637 goto out_inval; 638 } 639 } else { 640 switch (*type) { 641 case NO_ROUTER: 642 case PRIMARY_ROUTER: 643 case SECONDARY_ROUTER: 644 return; 645 case MULTICAST_ROUTER: 646 if (qeth_is_ipafunc_supported(card, prot, 647 IPA_OSA_MC_ROUTER)) 648 return; 649 default: 650 goto out_inval; 651 } 652 } 653 out_inval: 654 *type = NO_ROUTER; 655 } 656 657 int qeth_l3_setrouting_v4(struct qeth_card *card) 658 { 659 int rc; 660 661 QETH_CARD_TEXT(card, 3, "setrtg4"); 662 663 qeth_l3_correct_routing_type(card, &card->options.route4.type, 664 QETH_PROT_IPV4); 665 666 rc = qeth_l3_send_setrouting(card, card->options.route4.type, 667 QETH_PROT_IPV4); 668 if (rc) { 669 card->options.route4.type = NO_ROUTER; 670 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" 671 " on %s. Type set to 'no router'.\n", rc, 672 QETH_CARD_IFNAME(card)); 673 } 674 return rc; 675 } 676 677 int qeth_l3_setrouting_v6(struct qeth_card *card) 678 { 679 int rc = 0; 680 681 QETH_CARD_TEXT(card, 3, "setrtg6"); 682 #ifdef CONFIG_QETH_IPV6 683 684 if (!qeth_is_supported(card, IPA_IPV6)) 685 return 0; 686 qeth_l3_correct_routing_type(card, &card->options.route6.type, 687 QETH_PROT_IPV6); 688 689 rc = qeth_l3_send_setrouting(card, card->options.route6.type, 690 QETH_PROT_IPV6); 691 if (rc) { 692 card->options.route6.type = NO_ROUTER; 693 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" 694 " on %s. Type set to 'no router'.\n", rc, 695 QETH_CARD_IFNAME(card)); 696 } 697 #endif 698 return rc; 699 } 700 701 /* 702 * IP address takeover related functions 703 */ 704 static void qeth_l3_clear_ipato_list(struct qeth_card *card) 705 { 706 707 struct qeth_ipato_entry *ipatoe, *tmp; 708 unsigned long flags; 709 710 spin_lock_irqsave(&card->ip_lock, flags); 711 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 712 list_del(&ipatoe->entry); 713 kfree(ipatoe); 714 } 715 spin_unlock_irqrestore(&card->ip_lock, flags); 716 } 717 718 int qeth_l3_add_ipato_entry(struct qeth_card *card, 719 struct qeth_ipato_entry *new) 720 { 721 struct qeth_ipato_entry *ipatoe; 722 unsigned long flags; 723 int rc = 0; 724 725 QETH_CARD_TEXT(card, 2, "addipato"); 726 spin_lock_irqsave(&card->ip_lock, flags); 727 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 728 if (ipatoe->proto != new->proto) 729 continue; 730 if (!memcmp(ipatoe->addr, new->addr, 731 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) && 732 (ipatoe->mask_bits == new->mask_bits)) { 733 rc = -EEXIST; 734 break; 735 } 736 } 737 if (!rc) 738 list_add_tail(&new->entry, &card->ipato.entries); 739 740 spin_unlock_irqrestore(&card->ip_lock, flags); 741 return rc; 742 } 743 744 void qeth_l3_del_ipato_entry(struct qeth_card *card, 745 enum qeth_prot_versions proto, u8 *addr, int mask_bits) 746 { 747 struct qeth_ipato_entry *ipatoe, *tmp; 748 unsigned long flags; 749 750 QETH_CARD_TEXT(card, 2, "delipato"); 751 spin_lock_irqsave(&card->ip_lock, flags); 752 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 753 if (ipatoe->proto != proto) 754 continue; 755 if (!memcmp(ipatoe->addr, addr, 756 (proto == QETH_PROT_IPV4)? 4:16) && 757 (ipatoe->mask_bits == mask_bits)) { 758 list_del(&ipatoe->entry); 759 kfree(ipatoe); 760 } 761 } 762 spin_unlock_irqrestore(&card->ip_lock, flags); 763 } 764 765 /* 766 * VIPA related functions 767 */ 768 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto, 769 const u8 *addr) 770 { 771 struct qeth_ipaddr *ipaddr; 772 unsigned long flags; 773 int rc = 0; 774 775 ipaddr = qeth_l3_get_addr_buffer(proto); 776 if (ipaddr) { 777 if (proto == QETH_PROT_IPV4) { 778 QETH_CARD_TEXT(card, 2, "addvipa4"); 779 memcpy(&ipaddr->u.a4.addr, addr, 4); 780 ipaddr->u.a4.mask = 0; 781 } else if (proto == QETH_PROT_IPV6) { 782 QETH_CARD_TEXT(card, 2, "addvipa6"); 783 memcpy(&ipaddr->u.a6.addr, addr, 16); 784 ipaddr->u.a6.pfxlen = 0; 785 } 786 ipaddr->type = QETH_IP_TYPE_VIPA; 787 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG; 788 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG; 789 } else 790 return -ENOMEM; 791 spin_lock_irqsave(&card->ip_lock, flags); 792 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) || 793 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0)) 794 rc = -EEXIST; 795 spin_unlock_irqrestore(&card->ip_lock, flags); 796 if (rc) { 797 kfree(ipaddr); 798 return rc; 799 } 800 if (!qeth_l3_add_ip(card, ipaddr)) 801 kfree(ipaddr); 802 qeth_l3_set_ip_addr_list(card); 803 return rc; 804 } 805 806 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto, 807 const u8 *addr) 808 { 809 struct qeth_ipaddr *ipaddr; 810 811 ipaddr = qeth_l3_get_addr_buffer(proto); 812 if (ipaddr) { 813 if (proto == QETH_PROT_IPV4) { 814 QETH_CARD_TEXT(card, 2, "delvipa4"); 815 memcpy(&ipaddr->u.a4.addr, addr, 4); 816 ipaddr->u.a4.mask = 0; 817 } else if (proto == QETH_PROT_IPV6) { 818 QETH_CARD_TEXT(card, 2, "delvipa6"); 819 memcpy(&ipaddr->u.a6.addr, addr, 16); 820 ipaddr->u.a6.pfxlen = 0; 821 } 822 ipaddr->type = QETH_IP_TYPE_VIPA; 823 } else 824 return; 825 if (!qeth_l3_delete_ip(card, ipaddr)) 826 kfree(ipaddr); 827 qeth_l3_set_ip_addr_list(card); 828 } 829 830 /* 831 * proxy ARP related functions 832 */ 833 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto, 834 const u8 *addr) 835 { 836 struct qeth_ipaddr *ipaddr; 837 unsigned long flags; 838 int rc = 0; 839 840 ipaddr = qeth_l3_get_addr_buffer(proto); 841 if (ipaddr) { 842 if (proto == QETH_PROT_IPV4) { 843 QETH_CARD_TEXT(card, 2, "addrxip4"); 844 memcpy(&ipaddr->u.a4.addr, addr, 4); 845 ipaddr->u.a4.mask = 0; 846 } else if (proto == QETH_PROT_IPV6) { 847 QETH_CARD_TEXT(card, 2, "addrxip6"); 848 memcpy(&ipaddr->u.a6.addr, addr, 16); 849 ipaddr->u.a6.pfxlen = 0; 850 } 851 ipaddr->type = QETH_IP_TYPE_RXIP; 852 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG; 853 ipaddr->del_flags = 0; 854 } else 855 return -ENOMEM; 856 spin_lock_irqsave(&card->ip_lock, flags); 857 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) || 858 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0)) 859 rc = -EEXIST; 860 spin_unlock_irqrestore(&card->ip_lock, flags); 861 if (rc) { 862 kfree(ipaddr); 863 return rc; 864 } 865 if (!qeth_l3_add_ip(card, ipaddr)) 866 kfree(ipaddr); 867 qeth_l3_set_ip_addr_list(card); 868 return 0; 869 } 870 871 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto, 872 const u8 *addr) 873 { 874 struct qeth_ipaddr *ipaddr; 875 876 ipaddr = qeth_l3_get_addr_buffer(proto); 877 if (ipaddr) { 878 if (proto == QETH_PROT_IPV4) { 879 QETH_CARD_TEXT(card, 2, "addrxip4"); 880 memcpy(&ipaddr->u.a4.addr, addr, 4); 881 ipaddr->u.a4.mask = 0; 882 } else if (proto == QETH_PROT_IPV6) { 883 QETH_CARD_TEXT(card, 2, "addrxip6"); 884 memcpy(&ipaddr->u.a6.addr, addr, 16); 885 ipaddr->u.a6.pfxlen = 0; 886 } 887 ipaddr->type = QETH_IP_TYPE_RXIP; 888 } else 889 return; 890 if (!qeth_l3_delete_ip(card, ipaddr)) 891 kfree(ipaddr); 892 qeth_l3_set_ip_addr_list(card); 893 } 894 895 static int qeth_l3_register_addr_entry(struct qeth_card *card, 896 struct qeth_ipaddr *addr) 897 { 898 char buf[50]; 899 int rc = 0; 900 int cnt = 3; 901 902 if (addr->proto == QETH_PROT_IPV4) { 903 QETH_CARD_TEXT(card, 2, "setaddr4"); 904 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 905 } else if (addr->proto == QETH_PROT_IPV6) { 906 QETH_CARD_TEXT(card, 2, "setaddr6"); 907 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 908 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 909 } else { 910 QETH_CARD_TEXT(card, 2, "setaddr?"); 911 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 912 } 913 do { 914 if (addr->is_multicast) 915 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); 916 else 917 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP, 918 addr->set_flags); 919 if (rc) 920 QETH_CARD_TEXT(card, 2, "failed"); 921 } while ((--cnt > 0) && rc); 922 if (rc) { 923 QETH_CARD_TEXT(card, 2, "FAILED"); 924 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); 925 dev_warn(&card->gdev->dev, 926 "Registering IP address %s failed\n", buf); 927 } 928 return rc; 929 } 930 931 static int qeth_l3_deregister_addr_entry(struct qeth_card *card, 932 struct qeth_ipaddr *addr) 933 { 934 int rc = 0; 935 936 if (addr->proto == QETH_PROT_IPV4) { 937 QETH_CARD_TEXT(card, 2, "deladdr4"); 938 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 939 } else if (addr->proto == QETH_PROT_IPV6) { 940 QETH_CARD_TEXT(card, 2, "deladdr6"); 941 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 942 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 943 } else { 944 QETH_CARD_TEXT(card, 2, "deladdr?"); 945 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 946 } 947 if (addr->is_multicast) 948 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); 949 else 950 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP, 951 addr->del_flags); 952 if (rc) 953 QETH_CARD_TEXT(card, 2, "failed"); 954 955 return rc; 956 } 957 958 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type) 959 { 960 if (cast_type == RTN_MULTICAST) 961 return QETH_CAST_MULTICAST; 962 if (cast_type == RTN_BROADCAST) 963 return QETH_CAST_BROADCAST; 964 return QETH_CAST_UNICAST; 965 } 966 967 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type) 968 { 969 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6; 970 if (cast_type == RTN_MULTICAST) 971 return ct | QETH_CAST_MULTICAST; 972 if (cast_type == RTN_ANYCAST) 973 return ct | QETH_CAST_ANYCAST; 974 if (cast_type == RTN_BROADCAST) 975 return ct | QETH_CAST_BROADCAST; 976 return ct | QETH_CAST_UNICAST; 977 } 978 979 static int qeth_l3_setadapter_parms(struct qeth_card *card) 980 { 981 int rc; 982 983 QETH_DBF_TEXT(SETUP, 2, "setadprm"); 984 985 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 986 dev_info(&card->gdev->dev, 987 "set adapter parameters not supported.\n"); 988 QETH_DBF_TEXT(SETUP, 2, " notsupp"); 989 return 0; 990 } 991 rc = qeth_query_setadapterparms(card); 992 if (rc) { 993 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: " 994 "0x%x\n", dev_name(&card->gdev->dev), rc); 995 return rc; 996 } 997 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { 998 rc = qeth_setadpparms_change_macaddr(card); 999 if (rc) 1000 dev_warn(&card->gdev->dev, "Reading the adapter MAC" 1001 " address failed\n"); 1002 } 1003 1004 return rc; 1005 } 1006 1007 static int qeth_l3_default_setassparms_cb(struct qeth_card *card, 1008 struct qeth_reply *reply, unsigned long data) 1009 { 1010 struct qeth_ipa_cmd *cmd; 1011 1012 QETH_CARD_TEXT(card, 4, "defadpcb"); 1013 1014 cmd = (struct qeth_ipa_cmd *) data; 1015 if (cmd->hdr.return_code == 0) { 1016 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 1017 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 1018 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 1019 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 1020 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 1021 } 1022 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM && 1023 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 1024 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit; 1025 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask); 1026 } 1027 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM && 1028 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 1029 card->info.tx_csum_mask = 1030 cmd->data.setassparms.data.flags_32bit; 1031 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask); 1032 } 1033 1034 return 0; 1035 } 1036 1037 static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd( 1038 struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code, 1039 __u16 len, enum qeth_prot_versions prot) 1040 { 1041 struct qeth_cmd_buffer *iob; 1042 struct qeth_ipa_cmd *cmd; 1043 1044 QETH_CARD_TEXT(card, 4, "getasscm"); 1045 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); 1046 1047 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1048 cmd->data.setassparms.hdr.assist_no = ipa_func; 1049 cmd->data.setassparms.hdr.length = 8 + len; 1050 cmd->data.setassparms.hdr.command_code = cmd_code; 1051 cmd->data.setassparms.hdr.return_code = 0; 1052 cmd->data.setassparms.hdr.seq_no = 0; 1053 1054 return iob; 1055 } 1056 1057 static int qeth_l3_send_setassparms(struct qeth_card *card, 1058 struct qeth_cmd_buffer *iob, __u16 len, long data, 1059 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 1060 unsigned long), 1061 void *reply_param) 1062 { 1063 int rc; 1064 struct qeth_ipa_cmd *cmd; 1065 1066 QETH_CARD_TEXT(card, 4, "sendassp"); 1067 1068 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1069 if (len <= sizeof(__u32)) 1070 cmd->data.setassparms.data.flags_32bit = (__u32) data; 1071 else /* (len > sizeof(__u32)) */ 1072 memcpy(&cmd->data.setassparms.data, (void *) data, len); 1073 1074 rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); 1075 return rc; 1076 } 1077 1078 #ifdef CONFIG_QETH_IPV6 1079 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card, 1080 enum qeth_ipa_funcs ipa_func, __u16 cmd_code) 1081 { 1082 int rc; 1083 struct qeth_cmd_buffer *iob; 1084 1085 QETH_CARD_TEXT(card, 4, "simassp6"); 1086 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code, 1087 0, QETH_PROT_IPV6); 1088 rc = qeth_l3_send_setassparms(card, iob, 0, 0, 1089 qeth_l3_default_setassparms_cb, NULL); 1090 return rc; 1091 } 1092 #endif 1093 1094 static int qeth_l3_send_simple_setassparms(struct qeth_card *card, 1095 enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data) 1096 { 1097 int rc; 1098 int length = 0; 1099 struct qeth_cmd_buffer *iob; 1100 1101 QETH_CARD_TEXT(card, 4, "simassp4"); 1102 if (data) 1103 length = sizeof(__u32); 1104 iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code, 1105 length, QETH_PROT_IPV4); 1106 rc = qeth_l3_send_setassparms(card, iob, length, data, 1107 qeth_l3_default_setassparms_cb, NULL); 1108 return rc; 1109 } 1110 1111 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) 1112 { 1113 int rc; 1114 1115 QETH_CARD_TEXT(card, 3, "ipaarp"); 1116 1117 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1118 dev_info(&card->gdev->dev, 1119 "ARP processing not supported on %s!\n", 1120 QETH_CARD_IFNAME(card)); 1121 return 0; 1122 } 1123 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING, 1124 IPA_CMD_ASS_START, 0); 1125 if (rc) { 1126 dev_warn(&card->gdev->dev, 1127 "Starting ARP processing support for %s failed\n", 1128 QETH_CARD_IFNAME(card)); 1129 } 1130 return rc; 1131 } 1132 1133 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card) 1134 { 1135 int rc; 1136 1137 QETH_CARD_TEXT(card, 3, "ipaipfrg"); 1138 1139 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) { 1140 dev_info(&card->gdev->dev, 1141 "Hardware IP fragmentation not supported on %s\n", 1142 QETH_CARD_IFNAME(card)); 1143 return -EOPNOTSUPP; 1144 } 1145 1146 rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION, 1147 IPA_CMD_ASS_START, 0); 1148 if (rc) { 1149 dev_warn(&card->gdev->dev, 1150 "Starting IP fragmentation support for %s failed\n", 1151 QETH_CARD_IFNAME(card)); 1152 } else 1153 dev_info(&card->gdev->dev, 1154 "Hardware IP fragmentation enabled \n"); 1155 return rc; 1156 } 1157 1158 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 1159 { 1160 int rc; 1161 1162 QETH_CARD_TEXT(card, 3, "stsrcmac"); 1163 1164 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { 1165 dev_info(&card->gdev->dev, 1166 "Inbound source MAC-address not supported on %s\n", 1167 QETH_CARD_IFNAME(card)); 1168 return -EOPNOTSUPP; 1169 } 1170 1171 rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC, 1172 IPA_CMD_ASS_START, 0); 1173 if (rc) 1174 dev_warn(&card->gdev->dev, 1175 "Starting source MAC-address support for %s failed\n", 1176 QETH_CARD_IFNAME(card)); 1177 return rc; 1178 } 1179 1180 static int qeth_l3_start_ipa_vlan(struct qeth_card *card) 1181 { 1182 int rc = 0; 1183 1184 QETH_CARD_TEXT(card, 3, "strtvlan"); 1185 1186 if (!qeth_is_supported(card, IPA_FULL_VLAN)) { 1187 dev_info(&card->gdev->dev, 1188 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card)); 1189 return -EOPNOTSUPP; 1190 } 1191 1192 rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO, 1193 IPA_CMD_ASS_START, 0); 1194 if (rc) { 1195 dev_warn(&card->gdev->dev, 1196 "Starting VLAN support for %s failed\n", 1197 QETH_CARD_IFNAME(card)); 1198 } else { 1199 dev_info(&card->gdev->dev, "VLAN enabled\n"); 1200 } 1201 return rc; 1202 } 1203 1204 static int qeth_l3_start_ipa_multicast(struct qeth_card *card) 1205 { 1206 int rc; 1207 1208 QETH_CARD_TEXT(card, 3, "stmcast"); 1209 1210 if (!qeth_is_supported(card, IPA_MULTICASTING)) { 1211 dev_info(&card->gdev->dev, 1212 "Multicast not supported on %s\n", 1213 QETH_CARD_IFNAME(card)); 1214 return -EOPNOTSUPP; 1215 } 1216 1217 rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING, 1218 IPA_CMD_ASS_START, 0); 1219 if (rc) { 1220 dev_warn(&card->gdev->dev, 1221 "Starting multicast support for %s failed\n", 1222 QETH_CARD_IFNAME(card)); 1223 } else { 1224 dev_info(&card->gdev->dev, "Multicast enabled\n"); 1225 card->dev->flags |= IFF_MULTICAST; 1226 } 1227 return rc; 1228 } 1229 1230 #ifdef CONFIG_QETH_IPV6 1231 static int qeth_l3_softsetup_ipv6(struct qeth_card *card) 1232 { 1233 int rc; 1234 1235 QETH_CARD_TEXT(card, 3, "softipv6"); 1236 1237 if (card->info.type == QETH_CARD_TYPE_IQD) 1238 goto out; 1239 1240 rc = qeth_query_ipassists(card, QETH_PROT_IPV6); 1241 if (rc) { 1242 dev_err(&card->gdev->dev, 1243 "Activating IPv6 support for %s failed\n", 1244 QETH_CARD_IFNAME(card)); 1245 return rc; 1246 } 1247 rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6, 1248 IPA_CMD_ASS_START, 3); 1249 if (rc) { 1250 dev_err(&card->gdev->dev, 1251 "Activating IPv6 support for %s failed\n", 1252 QETH_CARD_IFNAME(card)); 1253 return rc; 1254 } 1255 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6, 1256 IPA_CMD_ASS_START); 1257 if (rc) { 1258 dev_err(&card->gdev->dev, 1259 "Activating IPv6 support for %s failed\n", 1260 QETH_CARD_IFNAME(card)); 1261 return rc; 1262 } 1263 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU, 1264 IPA_CMD_ASS_START); 1265 if (rc) { 1266 dev_warn(&card->gdev->dev, 1267 "Enabling the passthrough mode for %s failed\n", 1268 QETH_CARD_IFNAME(card)); 1269 return rc; 1270 } 1271 out: 1272 dev_info(&card->gdev->dev, "IPV6 enabled\n"); 1273 return 0; 1274 } 1275 #endif 1276 1277 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) 1278 { 1279 int rc = 0; 1280 1281 QETH_CARD_TEXT(card, 3, "strtipv6"); 1282 1283 if (!qeth_is_supported(card, IPA_IPV6)) { 1284 dev_info(&card->gdev->dev, 1285 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card)); 1286 return 0; 1287 } 1288 #ifdef CONFIG_QETH_IPV6 1289 rc = qeth_l3_softsetup_ipv6(card); 1290 #endif 1291 return rc ; 1292 } 1293 1294 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) 1295 { 1296 int rc; 1297 1298 QETH_CARD_TEXT(card, 3, "stbrdcst"); 1299 card->info.broadcast_capable = 0; 1300 if (!qeth_is_supported(card, IPA_FILTERING)) { 1301 dev_info(&card->gdev->dev, 1302 "Broadcast not supported on %s\n", 1303 QETH_CARD_IFNAME(card)); 1304 rc = -EOPNOTSUPP; 1305 goto out; 1306 } 1307 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING, 1308 IPA_CMD_ASS_START, 0); 1309 if (rc) { 1310 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for " 1311 "%s failed\n", QETH_CARD_IFNAME(card)); 1312 goto out; 1313 } 1314 1315 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING, 1316 IPA_CMD_ASS_CONFIGURE, 1); 1317 if (rc) { 1318 dev_warn(&card->gdev->dev, 1319 "Setting up broadcast filtering for %s failed\n", 1320 QETH_CARD_IFNAME(card)); 1321 goto out; 1322 } 1323 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; 1324 dev_info(&card->gdev->dev, "Broadcast enabled\n"); 1325 rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING, 1326 IPA_CMD_ASS_ENABLE, 1); 1327 if (rc) { 1328 dev_warn(&card->gdev->dev, "Setting up broadcast echo " 1329 "filtering for %s failed\n", QETH_CARD_IFNAME(card)); 1330 goto out; 1331 } 1332 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; 1333 out: 1334 if (card->info.broadcast_capable) 1335 card->dev->flags |= IFF_BROADCAST; 1336 else 1337 card->dev->flags &= ~IFF_BROADCAST; 1338 return rc; 1339 } 1340 1341 static int qeth_l3_send_checksum_command(struct qeth_card *card) 1342 { 1343 int rc; 1344 1345 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM, 1346 IPA_CMD_ASS_START, 0); 1347 if (rc) { 1348 dev_warn(&card->gdev->dev, "Starting HW checksumming for %s " 1349 "failed, using SW checksumming\n", 1350 QETH_CARD_IFNAME(card)); 1351 return rc; 1352 } 1353 rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM, 1354 IPA_CMD_ASS_ENABLE, 1355 card->info.csum_mask); 1356 if (rc) { 1357 dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s " 1358 "failed, using SW checksumming\n", 1359 QETH_CARD_IFNAME(card)); 1360 return rc; 1361 } 1362 return 0; 1363 } 1364 1365 static int qeth_l3_set_rx_csum(struct qeth_card *card, int on) 1366 { 1367 int rc = 0; 1368 1369 if (on) { 1370 rc = qeth_l3_send_checksum_command(card); 1371 if (rc) 1372 return -EIO; 1373 dev_info(&card->gdev->dev, 1374 "HW Checksumming (inbound) enabled\n"); 1375 } else { 1376 rc = qeth_l3_send_simple_setassparms(card, 1377 IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_STOP, 0); 1378 if (rc) 1379 return -EIO; 1380 } 1381 1382 return 0; 1383 } 1384 1385 static int qeth_l3_start_ipa_checksum(struct qeth_card *card) 1386 { 1387 QETH_CARD_TEXT(card, 3, "strtcsum"); 1388 1389 if (card->dev->features & NETIF_F_RXCSUM) { 1390 rtnl_lock(); 1391 /* force set_features call */ 1392 card->dev->features &= ~NETIF_F_RXCSUM; 1393 netdev_update_features(card->dev); 1394 rtnl_unlock(); 1395 } 1396 return 0; 1397 } 1398 1399 static int qeth_l3_start_ipa_tx_checksum(struct qeth_card *card) 1400 { 1401 int rc = 0; 1402 1403 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 1404 return rc; 1405 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM, 1406 IPA_CMD_ASS_START, 0); 1407 if (rc) 1408 goto err_out; 1409 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_CHECKSUM, 1410 IPA_CMD_ASS_ENABLE, card->info.tx_csum_mask); 1411 if (rc) 1412 goto err_out; 1413 dev_info(&card->gdev->dev, "HW TX Checksumming enabled\n"); 1414 return rc; 1415 err_out: 1416 dev_warn(&card->gdev->dev, "Enabling HW TX checksumming for %s " 1417 "failed, using SW TX checksumming\n", QETH_CARD_IFNAME(card)); 1418 return rc; 1419 } 1420 1421 static int qeth_l3_start_ipa_tso(struct qeth_card *card) 1422 { 1423 int rc; 1424 1425 QETH_CARD_TEXT(card, 3, "sttso"); 1426 1427 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 1428 dev_info(&card->gdev->dev, 1429 "Outbound TSO not supported on %s\n", 1430 QETH_CARD_IFNAME(card)); 1431 rc = -EOPNOTSUPP; 1432 } else { 1433 rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 1434 IPA_CMD_ASS_START, 0); 1435 if (rc) 1436 dev_warn(&card->gdev->dev, "Starting outbound TCP " 1437 "segmentation offload for %s failed\n", 1438 QETH_CARD_IFNAME(card)); 1439 else 1440 dev_info(&card->gdev->dev, 1441 "Outbound TSO enabled\n"); 1442 } 1443 if (rc) 1444 card->dev->features &= ~NETIF_F_TSO; 1445 return rc; 1446 } 1447 1448 static int qeth_l3_start_ipassists(struct qeth_card *card) 1449 { 1450 QETH_CARD_TEXT(card, 3, "strtipas"); 1451 1452 qeth_set_access_ctrl_online(card); /* go on*/ 1453 qeth_l3_start_ipa_arp_processing(card); /* go on*/ 1454 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/ 1455 qeth_l3_start_ipa_source_mac(card); /* go on*/ 1456 qeth_l3_start_ipa_vlan(card); /* go on*/ 1457 qeth_l3_start_ipa_multicast(card); /* go on*/ 1458 qeth_l3_start_ipa_ipv6(card); /* go on*/ 1459 qeth_l3_start_ipa_broadcast(card); /* go on*/ 1460 qeth_l3_start_ipa_checksum(card); /* go on*/ 1461 qeth_l3_start_ipa_tx_checksum(card); 1462 qeth_l3_start_ipa_tso(card); /* go on*/ 1463 return 0; 1464 } 1465 1466 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, 1467 struct qeth_reply *reply, unsigned long data) 1468 { 1469 struct qeth_ipa_cmd *cmd; 1470 1471 cmd = (struct qeth_ipa_cmd *) data; 1472 if (cmd->hdr.return_code == 0) 1473 memcpy(card->dev->dev_addr, 1474 cmd->data.create_destroy_addr.unique_id, ETH_ALEN); 1475 else 1476 eth_random_addr(card->dev->dev_addr); 1477 1478 return 0; 1479 } 1480 1481 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) 1482 { 1483 int rc = 0; 1484 struct qeth_cmd_buffer *iob; 1485 struct qeth_ipa_cmd *cmd; 1486 1487 QETH_DBF_TEXT(SETUP, 2, "hsrmac"); 1488 1489 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 1490 QETH_PROT_IPV6); 1491 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1492 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 1493 card->info.unique_id; 1494 1495 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, 1496 NULL); 1497 return rc; 1498 } 1499 1500 static int qeth_l3_get_unique_id_cb(struct qeth_card *card, 1501 struct qeth_reply *reply, unsigned long data) 1502 { 1503 struct qeth_ipa_cmd *cmd; 1504 1505 cmd = (struct qeth_ipa_cmd *) data; 1506 if (cmd->hdr.return_code == 0) 1507 card->info.unique_id = *((__u16 *) 1508 &cmd->data.create_destroy_addr.unique_id[6]); 1509 else { 1510 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1511 UNIQUE_ID_NOT_BY_CARD; 1512 dev_warn(&card->gdev->dev, "The network adapter failed to " 1513 "generate a unique ID\n"); 1514 } 1515 return 0; 1516 } 1517 1518 static int qeth_l3_get_unique_id(struct qeth_card *card) 1519 { 1520 int rc = 0; 1521 struct qeth_cmd_buffer *iob; 1522 struct qeth_ipa_cmd *cmd; 1523 1524 QETH_DBF_TEXT(SETUP, 2, "guniqeid"); 1525 1526 if (!qeth_is_supported(card, IPA_IPV6)) { 1527 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1528 UNIQUE_ID_NOT_BY_CARD; 1529 return 0; 1530 } 1531 1532 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 1533 QETH_PROT_IPV6); 1534 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1535 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 1536 card->info.unique_id; 1537 1538 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL); 1539 return rc; 1540 } 1541 1542 static int 1543 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, 1544 unsigned long data) 1545 { 1546 struct qeth_ipa_cmd *cmd; 1547 __u16 rc; 1548 1549 QETH_DBF_TEXT(SETUP, 2, "diastrcb"); 1550 1551 cmd = (struct qeth_ipa_cmd *)data; 1552 rc = cmd->hdr.return_code; 1553 if (rc) 1554 QETH_CARD_TEXT_(card, 2, "dxter%x", rc); 1555 switch (cmd->data.diagass.action) { 1556 case QETH_DIAGS_CMD_TRACE_QUERY: 1557 break; 1558 case QETH_DIAGS_CMD_TRACE_DISABLE: 1559 switch (rc) { 1560 case 0: 1561 case IPA_RC_INVALID_SUBCMD: 1562 card->info.promisc_mode = SET_PROMISC_MODE_OFF; 1563 dev_info(&card->gdev->dev, "The HiperSockets network " 1564 "traffic analyzer is deactivated\n"); 1565 break; 1566 default: 1567 break; 1568 } 1569 break; 1570 case QETH_DIAGS_CMD_TRACE_ENABLE: 1571 switch (rc) { 1572 case 0: 1573 card->info.promisc_mode = SET_PROMISC_MODE_ON; 1574 dev_info(&card->gdev->dev, "The HiperSockets network " 1575 "traffic analyzer is activated\n"); 1576 break; 1577 case IPA_RC_HARDWARE_AUTH_ERROR: 1578 dev_warn(&card->gdev->dev, "The device is not " 1579 "authorized to run as a HiperSockets network " 1580 "traffic analyzer\n"); 1581 break; 1582 case IPA_RC_TRACE_ALREADY_ACTIVE: 1583 dev_warn(&card->gdev->dev, "A HiperSockets " 1584 "network traffic analyzer is already " 1585 "active in the HiperSockets LAN\n"); 1586 break; 1587 default: 1588 break; 1589 } 1590 break; 1591 default: 1592 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n", 1593 cmd->data.diagass.action, QETH_CARD_IFNAME(card)); 1594 } 1595 1596 return 0; 1597 } 1598 1599 static int 1600 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) 1601 { 1602 struct qeth_cmd_buffer *iob; 1603 struct qeth_ipa_cmd *cmd; 1604 1605 QETH_DBF_TEXT(SETUP, 2, "diagtrac"); 1606 1607 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 1608 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1609 cmd->data.diagass.subcmd_len = 16; 1610 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE; 1611 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; 1612 cmd->data.diagass.action = diags_cmd; 1613 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL); 1614 } 1615 1616 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac, 1617 struct net_device *dev) 1618 { 1619 ip_eth_mc_map(ipm, mac); 1620 } 1621 1622 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev) 1623 { 1624 struct qeth_ipaddr *ipm; 1625 struct ip_mc_list *im4; 1626 char buf[MAX_ADDR_LEN]; 1627 1628 QETH_CARD_TEXT(card, 4, "addmc"); 1629 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL; 1630 im4 = rcu_dereference(im4->next_rcu)) { 1631 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev); 1632 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1633 if (!ipm) 1634 continue; 1635 ipm->u.a4.addr = im4->multiaddr; 1636 memcpy(ipm->mac, buf, OSA_ADDR_LEN); 1637 ipm->is_multicast = 1; 1638 if (!qeth_l3_add_ip(card, ipm)) 1639 kfree(ipm); 1640 } 1641 } 1642 1643 static void qeth_l3_add_vlan_mc(struct qeth_card *card) 1644 { 1645 struct in_device *in_dev; 1646 u16 vid; 1647 1648 QETH_CARD_TEXT(card, 4, "addmcvl"); 1649 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1650 return; 1651 1652 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1653 struct net_device *netdev; 1654 1655 rcu_read_lock(); 1656 netdev = __vlan_find_dev_deep(card->dev, vid); 1657 rcu_read_unlock(); 1658 if (netdev == NULL || 1659 !(netdev->flags & IFF_UP)) 1660 continue; 1661 in_dev = in_dev_get(netdev); 1662 if (!in_dev) 1663 continue; 1664 rcu_read_lock(); 1665 qeth_l3_add_mc(card, in_dev); 1666 rcu_read_unlock(); 1667 in_dev_put(in_dev); 1668 } 1669 } 1670 1671 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card) 1672 { 1673 struct in_device *in4_dev; 1674 1675 QETH_CARD_TEXT(card, 4, "chkmcv4"); 1676 in4_dev = in_dev_get(card->dev); 1677 if (in4_dev == NULL) 1678 return; 1679 rcu_read_lock(); 1680 qeth_l3_add_mc(card, in4_dev); 1681 qeth_l3_add_vlan_mc(card); 1682 rcu_read_unlock(); 1683 in_dev_put(in4_dev); 1684 } 1685 1686 #ifdef CONFIG_QETH_IPV6 1687 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev) 1688 { 1689 struct qeth_ipaddr *ipm; 1690 struct ifmcaddr6 *im6; 1691 char buf[MAX_ADDR_LEN]; 1692 1693 QETH_CARD_TEXT(card, 4, "addmc6"); 1694 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { 1695 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0); 1696 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1697 if (!ipm) 1698 continue; 1699 ipm->is_multicast = 1; 1700 memcpy(ipm->mac, buf, OSA_ADDR_LEN); 1701 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr, 1702 sizeof(struct in6_addr)); 1703 if (!qeth_l3_add_ip(card, ipm)) 1704 kfree(ipm); 1705 } 1706 } 1707 1708 static void qeth_l3_add_vlan_mc6(struct qeth_card *card) 1709 { 1710 struct inet6_dev *in_dev; 1711 u16 vid; 1712 1713 QETH_CARD_TEXT(card, 4, "admc6vl"); 1714 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1715 return; 1716 1717 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1718 struct net_device *netdev; 1719 1720 netdev = __vlan_find_dev_deep(card->dev, vid); 1721 if (netdev == NULL || 1722 !(netdev->flags & IFF_UP)) 1723 continue; 1724 in_dev = in6_dev_get(netdev); 1725 if (!in_dev) 1726 continue; 1727 read_lock_bh(&in_dev->lock); 1728 qeth_l3_add_mc6(card, in_dev); 1729 read_unlock_bh(&in_dev->lock); 1730 in6_dev_put(in_dev); 1731 } 1732 } 1733 1734 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card) 1735 { 1736 struct inet6_dev *in6_dev; 1737 1738 QETH_CARD_TEXT(card, 4, "chkmcv6"); 1739 if (!qeth_is_supported(card, IPA_IPV6)) 1740 return ; 1741 in6_dev = in6_dev_get(card->dev); 1742 if (in6_dev == NULL) 1743 return; 1744 read_lock_bh(&in6_dev->lock); 1745 qeth_l3_add_mc6(card, in6_dev); 1746 qeth_l3_add_vlan_mc6(card); 1747 read_unlock_bh(&in6_dev->lock); 1748 in6_dev_put(in6_dev); 1749 } 1750 #endif /* CONFIG_QETH_IPV6 */ 1751 1752 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card, 1753 unsigned short vid) 1754 { 1755 struct in_device *in_dev; 1756 struct in_ifaddr *ifa; 1757 struct qeth_ipaddr *addr; 1758 struct net_device *netdev; 1759 1760 QETH_CARD_TEXT(card, 4, "frvaddr4"); 1761 1762 netdev = __vlan_find_dev_deep(card->dev, vid); 1763 if (!netdev) 1764 return; 1765 in_dev = in_dev_get(netdev); 1766 if (!in_dev) 1767 return; 1768 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) { 1769 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1770 if (addr) { 1771 addr->u.a4.addr = ifa->ifa_address; 1772 addr->u.a4.mask = ifa->ifa_mask; 1773 addr->type = QETH_IP_TYPE_NORMAL; 1774 if (!qeth_l3_delete_ip(card, addr)) 1775 kfree(addr); 1776 } 1777 } 1778 in_dev_put(in_dev); 1779 } 1780 1781 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card, 1782 unsigned short vid) 1783 { 1784 #ifdef CONFIG_QETH_IPV6 1785 struct inet6_dev *in6_dev; 1786 struct inet6_ifaddr *ifa; 1787 struct qeth_ipaddr *addr; 1788 struct net_device *netdev; 1789 1790 QETH_CARD_TEXT(card, 4, "frvaddr6"); 1791 1792 netdev = __vlan_find_dev_deep(card->dev, vid); 1793 if (!netdev) 1794 return; 1795 in6_dev = in6_dev_get(netdev); 1796 if (!in6_dev) 1797 return; 1798 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) { 1799 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1800 if (addr) { 1801 memcpy(&addr->u.a6.addr, &ifa->addr, 1802 sizeof(struct in6_addr)); 1803 addr->u.a6.pfxlen = ifa->prefix_len; 1804 addr->type = QETH_IP_TYPE_NORMAL; 1805 if (!qeth_l3_delete_ip(card, addr)) 1806 kfree(addr); 1807 } 1808 } 1809 in6_dev_put(in6_dev); 1810 #endif /* CONFIG_QETH_IPV6 */ 1811 } 1812 1813 static void qeth_l3_free_vlan_addresses(struct qeth_card *card, 1814 unsigned short vid) 1815 { 1816 qeth_l3_free_vlan_addresses4(card, vid); 1817 qeth_l3_free_vlan_addresses6(card, vid); 1818 } 1819 1820 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) 1821 { 1822 struct qeth_card *card = dev->ml_priv; 1823 1824 set_bit(vid, card->active_vlans); 1825 return 0; 1826 } 1827 1828 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) 1829 { 1830 struct qeth_card *card = dev->ml_priv; 1831 unsigned long flags; 1832 1833 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 1834 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 1835 QETH_CARD_TEXT(card, 3, "kidREC"); 1836 return 0; 1837 } 1838 spin_lock_irqsave(&card->vlanlock, flags); 1839 /* unregister IP addresses of vlan device */ 1840 qeth_l3_free_vlan_addresses(card, vid); 1841 clear_bit(vid, card->active_vlans); 1842 spin_unlock_irqrestore(&card->vlanlock, flags); 1843 qeth_l3_set_multicast_list(card->dev); 1844 return 0; 1845 } 1846 1847 static inline int qeth_l3_rebuild_skb(struct qeth_card *card, 1848 struct sk_buff *skb, struct qeth_hdr *hdr, 1849 unsigned short *vlan_id) 1850 { 1851 __be16 prot; 1852 struct iphdr *ip_hdr; 1853 unsigned char tg_addr[MAX_ADDR_LEN]; 1854 int is_vlan = 0; 1855 1856 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) { 1857 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 : 1858 ETH_P_IP); 1859 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) { 1860 case QETH_CAST_MULTICAST: 1861 switch (prot) { 1862 #ifdef CONFIG_QETH_IPV6 1863 case __constant_htons(ETH_P_IPV6): 1864 ndisc_mc_map((struct in6_addr *) 1865 skb->data + 24, 1866 tg_addr, card->dev, 0); 1867 break; 1868 #endif 1869 case __constant_htons(ETH_P_IP): 1870 ip_hdr = (struct iphdr *)skb->data; 1871 ip_eth_mc_map(ip_hdr->daddr, tg_addr); 1872 break; 1873 default: 1874 memcpy(tg_addr, card->dev->broadcast, 1875 card->dev->addr_len); 1876 } 1877 card->stats.multicast++; 1878 skb->pkt_type = PACKET_MULTICAST; 1879 break; 1880 case QETH_CAST_BROADCAST: 1881 memcpy(tg_addr, card->dev->broadcast, 1882 card->dev->addr_len); 1883 card->stats.multicast++; 1884 skb->pkt_type = PACKET_BROADCAST; 1885 break; 1886 case QETH_CAST_UNICAST: 1887 case QETH_CAST_ANYCAST: 1888 case QETH_CAST_NOCAST: 1889 default: 1890 if (card->options.sniffer) 1891 skb->pkt_type = PACKET_OTHERHOST; 1892 else 1893 skb->pkt_type = PACKET_HOST; 1894 memcpy(tg_addr, card->dev->dev_addr, 1895 card->dev->addr_len); 1896 } 1897 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR) 1898 card->dev->header_ops->create(skb, card->dev, prot, 1899 tg_addr, &hdr->hdr.l3.dest_addr[2], 1900 card->dev->addr_len); 1901 else 1902 card->dev->header_ops->create(skb, card->dev, prot, 1903 tg_addr, "FAKELL", card->dev->addr_len); 1904 } 1905 1906 skb->protocol = eth_type_trans(skb, card->dev); 1907 1908 if (hdr->hdr.l3.ext_flags & 1909 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) { 1910 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ? 1911 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]); 1912 is_vlan = 1; 1913 } 1914 1915 if (card->dev->features & NETIF_F_RXCSUM) { 1916 if ((hdr->hdr.l3.ext_flags & 1917 (QETH_HDR_EXT_CSUM_HDR_REQ | 1918 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 1919 (QETH_HDR_EXT_CSUM_HDR_REQ | 1920 QETH_HDR_EXT_CSUM_TRANSP_REQ)) 1921 skb->ip_summed = CHECKSUM_UNNECESSARY; 1922 else 1923 skb->ip_summed = CHECKSUM_NONE; 1924 } else 1925 skb->ip_summed = CHECKSUM_NONE; 1926 1927 return is_vlan; 1928 } 1929 1930 static int qeth_l3_process_inbound_buffer(struct qeth_card *card, 1931 int budget, int *done) 1932 { 1933 int work_done = 0; 1934 struct sk_buff *skb; 1935 struct qeth_hdr *hdr; 1936 __u16 vlan_tag = 0; 1937 int is_vlan; 1938 unsigned int len; 1939 __u16 magic; 1940 1941 *done = 0; 1942 WARN_ON_ONCE(!budget); 1943 while (budget) { 1944 skb = qeth_core_get_next_skb(card, 1945 &card->qdio.in_q->bufs[card->rx.b_index], 1946 &card->rx.b_element, &card->rx.e_offset, &hdr); 1947 if (!skb) { 1948 *done = 1; 1949 break; 1950 } 1951 skb->dev = card->dev; 1952 switch (hdr->hdr.l3.id) { 1953 case QETH_HEADER_TYPE_LAYER3: 1954 magic = *(__u16 *)skb->data; 1955 if ((card->info.type == QETH_CARD_TYPE_IQD) && 1956 (magic == ETH_P_AF_IUCV)) { 1957 skb->protocol = ETH_P_AF_IUCV; 1958 skb->pkt_type = PACKET_HOST; 1959 skb->mac_header = NET_SKB_PAD; 1960 skb->dev = card->dev; 1961 len = skb->len; 1962 card->dev->header_ops->create(skb, card->dev, 0, 1963 card->dev->dev_addr, "FAKELL", 1964 card->dev->addr_len); 1965 netif_receive_skb(skb); 1966 } else { 1967 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr, 1968 &vlan_tag); 1969 len = skb->len; 1970 if (is_vlan && !card->options.sniffer) 1971 __vlan_hwaccel_put_tag(skb, vlan_tag); 1972 napi_gro_receive(&card->napi, skb); 1973 } 1974 break; 1975 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */ 1976 skb->pkt_type = PACKET_HOST; 1977 skb->protocol = eth_type_trans(skb, skb->dev); 1978 len = skb->len; 1979 netif_receive_skb(skb); 1980 break; 1981 default: 1982 dev_kfree_skb_any(skb); 1983 QETH_CARD_TEXT(card, 3, "inbunkno"); 1984 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 1985 continue; 1986 } 1987 work_done++; 1988 budget--; 1989 card->stats.rx_packets++; 1990 card->stats.rx_bytes += len; 1991 } 1992 return work_done; 1993 } 1994 1995 static int qeth_l3_poll(struct napi_struct *napi, int budget) 1996 { 1997 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 1998 int work_done = 0; 1999 struct qeth_qdio_buffer *buffer; 2000 int done; 2001 int new_budget = budget; 2002 2003 if (card->options.performance_stats) { 2004 card->perf_stats.inbound_cnt++; 2005 card->perf_stats.inbound_start_time = qeth_get_micros(); 2006 } 2007 2008 while (1) { 2009 if (!card->rx.b_count) { 2010 card->rx.qdio_err = 0; 2011 card->rx.b_count = qdio_get_next_buffers( 2012 card->data.ccwdev, 0, &card->rx.b_index, 2013 &card->rx.qdio_err); 2014 if (card->rx.b_count <= 0) { 2015 card->rx.b_count = 0; 2016 break; 2017 } 2018 card->rx.b_element = 2019 &card->qdio.in_q->bufs[card->rx.b_index] 2020 .buffer->element[0]; 2021 card->rx.e_offset = 0; 2022 } 2023 2024 while (card->rx.b_count) { 2025 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 2026 if (!(card->rx.qdio_err && 2027 qeth_check_qdio_errors(card, buffer->buffer, 2028 card->rx.qdio_err, "qinerr"))) 2029 work_done += qeth_l3_process_inbound_buffer( 2030 card, new_budget, &done); 2031 else 2032 done = 1; 2033 2034 if (done) { 2035 if (card->options.performance_stats) 2036 card->perf_stats.bufs_rec++; 2037 qeth_put_buffer_pool_entry(card, 2038 buffer->pool_entry); 2039 qeth_queue_input_buffer(card, card->rx.b_index); 2040 card->rx.b_count--; 2041 if (card->rx.b_count) { 2042 card->rx.b_index = 2043 (card->rx.b_index + 1) % 2044 QDIO_MAX_BUFFERS_PER_Q; 2045 card->rx.b_element = 2046 &card->qdio.in_q 2047 ->bufs[card->rx.b_index] 2048 .buffer->element[0]; 2049 card->rx.e_offset = 0; 2050 } 2051 } 2052 2053 if (work_done >= budget) 2054 goto out; 2055 else 2056 new_budget = budget - work_done; 2057 } 2058 } 2059 2060 napi_complete(napi); 2061 if (qdio_start_irq(card->data.ccwdev, 0)) 2062 napi_schedule(&card->napi); 2063 out: 2064 if (card->options.performance_stats) 2065 card->perf_stats.inbound_time += qeth_get_micros() - 2066 card->perf_stats.inbound_start_time; 2067 return work_done; 2068 } 2069 2070 static int qeth_l3_verify_vlan_dev(struct net_device *dev, 2071 struct qeth_card *card) 2072 { 2073 int rc = 0; 2074 u16 vid; 2075 2076 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 2077 struct net_device *netdev; 2078 2079 rcu_read_lock(); 2080 netdev = __vlan_find_dev_deep(card->dev, vid); 2081 rcu_read_unlock(); 2082 if (netdev == dev) { 2083 rc = QETH_VLAN_CARD; 2084 break; 2085 } 2086 } 2087 2088 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card)) 2089 return 0; 2090 2091 return rc; 2092 } 2093 2094 static int qeth_l3_verify_dev(struct net_device *dev) 2095 { 2096 struct qeth_card *card; 2097 unsigned long flags; 2098 int rc = 0; 2099 2100 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 2101 list_for_each_entry(card, &qeth_core_card_list.list, list) { 2102 if (card->dev == dev) { 2103 rc = QETH_REAL_CARD; 2104 break; 2105 } 2106 rc = qeth_l3_verify_vlan_dev(dev, card); 2107 if (rc) 2108 break; 2109 } 2110 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 2111 2112 return rc; 2113 } 2114 2115 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) 2116 { 2117 struct qeth_card *card = NULL; 2118 int rc; 2119 2120 rc = qeth_l3_verify_dev(dev); 2121 if (rc == QETH_REAL_CARD) 2122 card = dev->ml_priv; 2123 else if (rc == QETH_VLAN_CARD) 2124 card = vlan_dev_real_dev(dev)->ml_priv; 2125 if (card && card->options.layer2) 2126 card = NULL; 2127 if (card) 2128 QETH_CARD_TEXT_(card, 4, "%d", rc); 2129 return card ; 2130 } 2131 2132 static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode) 2133 { 2134 int rc = 0; 2135 2136 QETH_DBF_TEXT(SETUP, 2, "stopcard"); 2137 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 2138 2139 qeth_set_allowed_threads(card, 0, 1); 2140 if (card->options.sniffer && 2141 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) 2142 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 2143 if (card->read.state == CH_STATE_UP && 2144 card->write.state == CH_STATE_UP && 2145 (card->state == CARD_STATE_UP)) { 2146 if (recovery_mode) 2147 qeth_l3_stop(card->dev); 2148 else { 2149 rtnl_lock(); 2150 dev_close(card->dev); 2151 rtnl_unlock(); 2152 } 2153 card->state = CARD_STATE_SOFTSETUP; 2154 } 2155 if (card->state == CARD_STATE_SOFTSETUP) { 2156 qeth_l3_clear_ip_list(card, 1); 2157 qeth_clear_ipacmd_list(card); 2158 card->state = CARD_STATE_HARDSETUP; 2159 } 2160 if (card->state == CARD_STATE_HARDSETUP) { 2161 qeth_qdio_clear_card(card, 0); 2162 qeth_clear_qdio_buffers(card); 2163 qeth_clear_working_pool_list(card); 2164 card->state = CARD_STATE_DOWN; 2165 } 2166 if (card->state == CARD_STATE_DOWN) { 2167 qeth_clear_cmd_buffers(&card->read); 2168 qeth_clear_cmd_buffers(&card->write); 2169 } 2170 return rc; 2171 } 2172 2173 /* 2174 * test for and Switch promiscuous mode (on or off) 2175 * either for guestlan or HiperSocket Sniffer 2176 */ 2177 static void 2178 qeth_l3_handle_promisc_mode(struct qeth_card *card) 2179 { 2180 struct net_device *dev = card->dev; 2181 2182 if (((dev->flags & IFF_PROMISC) && 2183 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 2184 (!(dev->flags & IFF_PROMISC) && 2185 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 2186 return; 2187 2188 if (card->info.guestlan) { /* Guestlan trace */ 2189 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 2190 qeth_setadp_promisc_mode(card); 2191 } else if (card->options.sniffer && /* HiperSockets trace */ 2192 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 2193 if (dev->flags & IFF_PROMISC) { 2194 QETH_CARD_TEXT(card, 3, "+promisc"); 2195 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE); 2196 } else { 2197 QETH_CARD_TEXT(card, 3, "-promisc"); 2198 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 2199 } 2200 } 2201 } 2202 2203 static void qeth_l3_set_multicast_list(struct net_device *dev) 2204 { 2205 struct qeth_card *card = dev->ml_priv; 2206 2207 QETH_CARD_TEXT(card, 3, "setmulti"); 2208 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 2209 (card->state != CARD_STATE_UP)) 2210 return; 2211 if (!card->options.sniffer) { 2212 qeth_l3_delete_mc_addresses(card); 2213 qeth_l3_add_multicast_ipv4(card); 2214 #ifdef CONFIG_QETH_IPV6 2215 qeth_l3_add_multicast_ipv6(card); 2216 #endif 2217 qeth_l3_set_ip_addr_list(card); 2218 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 2219 return; 2220 } 2221 qeth_l3_handle_promisc_mode(card); 2222 } 2223 2224 static const char *qeth_l3_arp_get_error_cause(int *rc) 2225 { 2226 switch (*rc) { 2227 case QETH_IPA_ARP_RC_FAILED: 2228 *rc = -EIO; 2229 return "operation failed"; 2230 case QETH_IPA_ARP_RC_NOTSUPP: 2231 *rc = -EOPNOTSUPP; 2232 return "operation not supported"; 2233 case QETH_IPA_ARP_RC_OUT_OF_RANGE: 2234 *rc = -EINVAL; 2235 return "argument out of range"; 2236 case QETH_IPA_ARP_RC_Q_NOTSUPP: 2237 *rc = -EOPNOTSUPP; 2238 return "query operation not supported"; 2239 case QETH_IPA_ARP_RC_Q_NO_DATA: 2240 *rc = -ENOENT; 2241 return "no query data available"; 2242 default: 2243 return "unknown error"; 2244 } 2245 } 2246 2247 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) 2248 { 2249 int tmp; 2250 int rc; 2251 2252 QETH_CARD_TEXT(card, 3, "arpstnoe"); 2253 2254 /* 2255 * currently GuestLAN only supports the ARP assist function 2256 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; 2257 * thus we say EOPNOTSUPP for this ARP function 2258 */ 2259 if (card->info.guestlan) 2260 return -EOPNOTSUPP; 2261 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2262 return -EOPNOTSUPP; 2263 } 2264 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING, 2265 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 2266 no_entries); 2267 if (rc) { 2268 tmp = rc; 2269 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on " 2270 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card), 2271 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2272 } 2273 return rc; 2274 } 2275 2276 static __u32 get_arp_entry_size(struct qeth_card *card, 2277 struct qeth_arp_query_data *qdata, 2278 struct qeth_arp_entrytype *type, __u8 strip_entries) 2279 { 2280 __u32 rc; 2281 __u8 is_hsi; 2282 2283 is_hsi = qdata->reply_bits == 5; 2284 if (type->ip == QETHARP_IP_ADDR_V4) { 2285 QETH_CARD_TEXT(card, 4, "arpev4"); 2286 if (strip_entries) { 2287 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : 2288 sizeof(struct qeth_arp_qi_entry7_short); 2289 } else { 2290 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : 2291 sizeof(struct qeth_arp_qi_entry7); 2292 } 2293 } else if (type->ip == QETHARP_IP_ADDR_V6) { 2294 QETH_CARD_TEXT(card, 4, "arpev6"); 2295 if (strip_entries) { 2296 rc = is_hsi ? 2297 sizeof(struct qeth_arp_qi_entry5_short_ipv6) : 2298 sizeof(struct qeth_arp_qi_entry7_short_ipv6); 2299 } else { 2300 rc = is_hsi ? 2301 sizeof(struct qeth_arp_qi_entry5_ipv6) : 2302 sizeof(struct qeth_arp_qi_entry7_ipv6); 2303 } 2304 } else { 2305 QETH_CARD_TEXT(card, 4, "arpinv"); 2306 rc = 0; 2307 } 2308 2309 return rc; 2310 } 2311 2312 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) 2313 { 2314 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || 2315 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); 2316 } 2317 2318 static int qeth_l3_arp_query_cb(struct qeth_card *card, 2319 struct qeth_reply *reply, unsigned long data) 2320 { 2321 struct qeth_ipa_cmd *cmd; 2322 struct qeth_arp_query_data *qdata; 2323 struct qeth_arp_query_info *qinfo; 2324 int i; 2325 int e; 2326 int entrybytes_done; 2327 int stripped_bytes; 2328 __u8 do_strip_entries; 2329 2330 QETH_CARD_TEXT(card, 3, "arpquecb"); 2331 2332 qinfo = (struct qeth_arp_query_info *) reply->param; 2333 cmd = (struct qeth_ipa_cmd *) data; 2334 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version); 2335 if (cmd->hdr.return_code) { 2336 QETH_CARD_TEXT(card, 4, "arpcberr"); 2337 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 2338 return 0; 2339 } 2340 if (cmd->data.setassparms.hdr.return_code) { 2341 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 2342 QETH_CARD_TEXT(card, 4, "setaperr"); 2343 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 2344 return 0; 2345 } 2346 qdata = &cmd->data.setassparms.data.query_arp; 2347 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries); 2348 2349 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; 2350 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; 2351 entrybytes_done = 0; 2352 for (e = 0; e < qdata->no_entries; ++e) { 2353 char *cur_entry; 2354 __u32 esize; 2355 struct qeth_arp_entrytype *etype; 2356 2357 cur_entry = &qdata->data + entrybytes_done; 2358 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; 2359 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) { 2360 QETH_CARD_TEXT(card, 4, "pmis"); 2361 QETH_CARD_TEXT_(card, 4, "%i", etype->ip); 2362 break; 2363 } 2364 esize = get_arp_entry_size(card, qdata, etype, 2365 do_strip_entries); 2366 QETH_CARD_TEXT_(card, 5, "esz%i", esize); 2367 if (!esize) 2368 break; 2369 2370 if ((qinfo->udata_len - qinfo->udata_offset) < esize) { 2371 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM); 2372 cmd->hdr.return_code = IPA_RC_ENOMEM; 2373 goto out_error; 2374 } 2375 2376 memcpy(qinfo->udata + qinfo->udata_offset, 2377 &qdata->data + entrybytes_done + stripped_bytes, 2378 esize); 2379 entrybytes_done += esize + stripped_bytes; 2380 qinfo->udata_offset += esize; 2381 ++qinfo->no_entries; 2382 } 2383 /* check if all replies received ... */ 2384 if (cmd->data.setassparms.hdr.seq_no < 2385 cmd->data.setassparms.hdr.number_of_replies) 2386 return 1; 2387 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries); 2388 memcpy(qinfo->udata, &qinfo->no_entries, 4); 2389 /* keep STRIP_ENTRIES flag so the user program can distinguish 2390 * stripped entries from normal ones */ 2391 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) 2392 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; 2393 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); 2394 QETH_CARD_TEXT_(card, 4, "rc%i", 0); 2395 return 0; 2396 out_error: 2397 i = 0; 2398 memcpy(qinfo->udata, &i, 4); 2399 return 0; 2400 } 2401 2402 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card, 2403 struct qeth_cmd_buffer *iob, int len, 2404 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 2405 unsigned long), 2406 void *reply_param) 2407 { 2408 QETH_CARD_TEXT(card, 4, "sendarp"); 2409 2410 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2411 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2412 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2413 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 2414 reply_cb, reply_param); 2415 } 2416 2417 static int qeth_l3_query_arp_cache_info(struct qeth_card *card, 2418 enum qeth_prot_versions prot, 2419 struct qeth_arp_query_info *qinfo) 2420 { 2421 struct qeth_cmd_buffer *iob; 2422 struct qeth_ipa_cmd *cmd; 2423 int tmp; 2424 int rc; 2425 2426 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); 2427 2428 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 2429 IPA_CMD_ASS_ARP_QUERY_INFO, 2430 sizeof(struct qeth_arp_query_data) - sizeof(char), 2431 prot); 2432 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2433 cmd->data.setassparms.data.query_arp.request_bits = 0x000F; 2434 cmd->data.setassparms.data.query_arp.reply_bits = 0; 2435 cmd->data.setassparms.data.query_arp.no_entries = 0; 2436 rc = qeth_l3_send_ipa_arp_cmd(card, iob, 2437 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN, 2438 qeth_l3_arp_query_cb, (void *)qinfo); 2439 if (rc) { 2440 tmp = rc; 2441 QETH_DBF_MESSAGE(2, 2442 "Error while querying ARP cache on %s: %s " 2443 "(0x%x/%d)\n", QETH_CARD_IFNAME(card), 2444 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2445 } 2446 2447 return rc; 2448 } 2449 2450 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) 2451 { 2452 struct qeth_arp_query_info qinfo = {0, }; 2453 int rc; 2454 2455 QETH_CARD_TEXT(card, 3, "arpquery"); 2456 2457 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ 2458 IPA_ARP_PROCESSING)) { 2459 QETH_CARD_TEXT(card, 3, "arpqnsup"); 2460 rc = -EOPNOTSUPP; 2461 goto out; 2462 } 2463 /* get size of userspace buffer and mask_bits -> 6 bytes */ 2464 if (copy_from_user(&qinfo, udata, 6)) { 2465 rc = -EFAULT; 2466 goto out; 2467 } 2468 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 2469 if (!qinfo.udata) { 2470 rc = -ENOMEM; 2471 goto out; 2472 } 2473 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; 2474 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo); 2475 if (rc) { 2476 if (copy_to_user(udata, qinfo.udata, 4)) 2477 rc = -EFAULT; 2478 goto free_and_out; 2479 } else { 2480 #ifdef CONFIG_QETH_IPV6 2481 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { 2482 /* fails in case of GuestLAN QDIO mode */ 2483 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, 2484 &qinfo); 2485 } 2486 #endif 2487 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) { 2488 QETH_CARD_TEXT(card, 4, "qactf"); 2489 rc = -EFAULT; 2490 goto free_and_out; 2491 } 2492 QETH_CARD_TEXT_(card, 4, "qacts"); 2493 } 2494 free_and_out: 2495 kfree(qinfo.udata); 2496 out: 2497 return rc; 2498 } 2499 2500 static int qeth_l3_arp_add_entry(struct qeth_card *card, 2501 struct qeth_arp_cache_entry *entry) 2502 { 2503 struct qeth_cmd_buffer *iob; 2504 char buf[16]; 2505 int tmp; 2506 int rc; 2507 2508 QETH_CARD_TEXT(card, 3, "arpadent"); 2509 2510 /* 2511 * currently GuestLAN only supports the ARP assist function 2512 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; 2513 * thus we say EOPNOTSUPP for this ARP function 2514 */ 2515 if (card->info.guestlan) 2516 return -EOPNOTSUPP; 2517 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2518 return -EOPNOTSUPP; 2519 } 2520 2521 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 2522 IPA_CMD_ASS_ARP_ADD_ENTRY, 2523 sizeof(struct qeth_arp_cache_entry), 2524 QETH_PROT_IPV4); 2525 rc = qeth_l3_send_setassparms(card, iob, 2526 sizeof(struct qeth_arp_cache_entry), 2527 (unsigned long) entry, 2528 qeth_l3_default_setassparms_cb, NULL); 2529 if (rc) { 2530 tmp = rc; 2531 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); 2532 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s " 2533 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), 2534 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2535 } 2536 return rc; 2537 } 2538 2539 static int qeth_l3_arp_remove_entry(struct qeth_card *card, 2540 struct qeth_arp_cache_entry *entry) 2541 { 2542 struct qeth_cmd_buffer *iob; 2543 char buf[16] = {0, }; 2544 int tmp; 2545 int rc; 2546 2547 QETH_CARD_TEXT(card, 3, "arprment"); 2548 2549 /* 2550 * currently GuestLAN only supports the ARP assist function 2551 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY; 2552 * thus we say EOPNOTSUPP for this ARP function 2553 */ 2554 if (card->info.guestlan) 2555 return -EOPNOTSUPP; 2556 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2557 return -EOPNOTSUPP; 2558 } 2559 memcpy(buf, entry, 12); 2560 iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 2561 IPA_CMD_ASS_ARP_REMOVE_ENTRY, 2562 12, 2563 QETH_PROT_IPV4); 2564 rc = qeth_l3_send_setassparms(card, iob, 2565 12, (unsigned long)buf, 2566 qeth_l3_default_setassparms_cb, NULL); 2567 if (rc) { 2568 tmp = rc; 2569 memset(buf, 0, 16); 2570 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); 2571 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s" 2572 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), 2573 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2574 } 2575 return rc; 2576 } 2577 2578 static int qeth_l3_arp_flush_cache(struct qeth_card *card) 2579 { 2580 int rc; 2581 int tmp; 2582 2583 QETH_CARD_TEXT(card, 3, "arpflush"); 2584 2585 /* 2586 * currently GuestLAN only supports the ARP assist function 2587 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; 2588 * thus we say EOPNOTSUPP for this ARP function 2589 */ 2590 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD)) 2591 return -EOPNOTSUPP; 2592 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2593 return -EOPNOTSUPP; 2594 } 2595 rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING, 2596 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0); 2597 if (rc) { 2598 tmp = rc; 2599 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s " 2600 "(0x%x/%d)\n", QETH_CARD_IFNAME(card), 2601 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2602 } 2603 return rc; 2604 } 2605 2606 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 2607 { 2608 struct qeth_card *card = dev->ml_priv; 2609 struct qeth_arp_cache_entry arp_entry; 2610 struct mii_ioctl_data *mii_data; 2611 int rc = 0; 2612 2613 if (!card) 2614 return -ENODEV; 2615 2616 if ((card->state != CARD_STATE_UP) && 2617 (card->state != CARD_STATE_SOFTSETUP)) 2618 return -ENODEV; 2619 2620 switch (cmd) { 2621 case SIOC_QETH_ARP_SET_NO_ENTRIES: 2622 if (!capable(CAP_NET_ADMIN)) { 2623 rc = -EPERM; 2624 break; 2625 } 2626 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); 2627 break; 2628 case SIOC_QETH_ARP_QUERY_INFO: 2629 if (!capable(CAP_NET_ADMIN)) { 2630 rc = -EPERM; 2631 break; 2632 } 2633 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data); 2634 break; 2635 case SIOC_QETH_ARP_ADD_ENTRY: 2636 if (!capable(CAP_NET_ADMIN)) { 2637 rc = -EPERM; 2638 break; 2639 } 2640 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data, 2641 sizeof(struct qeth_arp_cache_entry))) 2642 rc = -EFAULT; 2643 else 2644 rc = qeth_l3_arp_add_entry(card, &arp_entry); 2645 break; 2646 case SIOC_QETH_ARP_REMOVE_ENTRY: 2647 if (!capable(CAP_NET_ADMIN)) { 2648 rc = -EPERM; 2649 break; 2650 } 2651 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data, 2652 sizeof(struct qeth_arp_cache_entry))) 2653 rc = -EFAULT; 2654 else 2655 rc = qeth_l3_arp_remove_entry(card, &arp_entry); 2656 break; 2657 case SIOC_QETH_ARP_FLUSH_CACHE: 2658 if (!capable(CAP_NET_ADMIN)) { 2659 rc = -EPERM; 2660 break; 2661 } 2662 rc = qeth_l3_arp_flush_cache(card); 2663 break; 2664 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 2665 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 2666 break; 2667 case SIOC_QETH_GET_CARD_TYPE: 2668 if ((card->info.type == QETH_CARD_TYPE_OSD || 2669 card->info.type == QETH_CARD_TYPE_OSX) && 2670 !card->info.guestlan) 2671 return 1; 2672 return 0; 2673 break; 2674 case SIOCGMIIPHY: 2675 mii_data = if_mii(rq); 2676 mii_data->phy_id = 0; 2677 break; 2678 case SIOCGMIIREG: 2679 mii_data = if_mii(rq); 2680 if (mii_data->phy_id != 0) 2681 rc = -EINVAL; 2682 else 2683 mii_data->val_out = qeth_mdio_read(dev, 2684 mii_data->phy_id, 2685 mii_data->reg_num); 2686 break; 2687 case SIOC_QETH_QUERY_OAT: 2688 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 2689 break; 2690 default: 2691 rc = -EOPNOTSUPP; 2692 } 2693 if (rc) 2694 QETH_CARD_TEXT_(card, 2, "ioce%d", rc); 2695 return rc; 2696 } 2697 2698 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 2699 { 2700 int cast_type = RTN_UNSPEC; 2701 struct neighbour *n = NULL; 2702 struct dst_entry *dst; 2703 2704 rcu_read_lock(); 2705 dst = skb_dst(skb); 2706 if (dst) 2707 n = dst_neigh_lookup_skb(dst, skb); 2708 if (n) { 2709 cast_type = n->type; 2710 rcu_read_unlock(); 2711 neigh_release(n); 2712 if ((cast_type == RTN_BROADCAST) || 2713 (cast_type == RTN_MULTICAST) || 2714 (cast_type == RTN_ANYCAST)) 2715 return cast_type; 2716 else 2717 return RTN_UNSPEC; 2718 } 2719 rcu_read_unlock(); 2720 2721 /* try something else */ 2722 if (skb->protocol == ETH_P_IPV6) 2723 return (skb_network_header(skb)[24] == 0xff) ? 2724 RTN_MULTICAST : 0; 2725 else if (skb->protocol == ETH_P_IP) 2726 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ? 2727 RTN_MULTICAST : 0; 2728 /* ... */ 2729 if (!memcmp(skb->data, skb->dev->broadcast, 6)) 2730 return RTN_BROADCAST; 2731 else { 2732 u16 hdr_mac; 2733 2734 hdr_mac = *((u16 *)skb->data); 2735 /* tr multicast? */ 2736 switch (card->info.link_type) { 2737 case QETH_LINK_TYPE_HSTR: 2738 case QETH_LINK_TYPE_LANE_TR: 2739 if ((hdr_mac == QETH_TR_MAC_NC) || 2740 (hdr_mac == QETH_TR_MAC_C)) 2741 return RTN_MULTICAST; 2742 break; 2743 /* eth or so multicast? */ 2744 default: 2745 if ((hdr_mac == QETH_ETH_MAC_V4) || 2746 (hdr_mac == QETH_ETH_MAC_V6)) 2747 return RTN_MULTICAST; 2748 } 2749 } 2750 return cast_type; 2751 } 2752 2753 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card, 2754 struct qeth_hdr *hdr, struct sk_buff *skb) 2755 { 2756 char daddr[16]; 2757 struct af_iucv_trans_hdr *iucv_hdr; 2758 2759 skb_pull(skb, 14); 2760 card->dev->header_ops->create(skb, card->dev, 0, 2761 card->dev->dev_addr, card->dev->dev_addr, 2762 card->dev->addr_len); 2763 skb_pull(skb, 14); 2764 iucv_hdr = (struct af_iucv_trans_hdr *)skb->data; 2765 memset(hdr, 0, sizeof(struct qeth_hdr)); 2766 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 2767 hdr->hdr.l3.ext_flags = 0; 2768 hdr->hdr.l3.length = skb->len; 2769 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST; 2770 memset(daddr, 0, sizeof(daddr)); 2771 daddr[0] = 0xfe; 2772 daddr[1] = 0x80; 2773 memcpy(&daddr[8], iucv_hdr->destUserID, 8); 2774 memcpy(hdr->hdr.l3.dest_addr, daddr, 16); 2775 } 2776 2777 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 2778 struct sk_buff *skb, int ipv, int cast_type) 2779 { 2780 struct dst_entry *dst; 2781 2782 memset(hdr, 0, sizeof(struct qeth_hdr)); 2783 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 2784 hdr->hdr.l3.ext_flags = 0; 2785 2786 /* 2787 * before we're going to overwrite this location with next hop ip. 2788 * v6 uses passthrough, v4 sets the tag in the QDIO header. 2789 */ 2790 if (vlan_tx_tag_present(skb)) { 2791 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD)) 2792 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME; 2793 else 2794 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG; 2795 hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb); 2796 } 2797 2798 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr); 2799 2800 rcu_read_lock(); 2801 dst = skb_dst(skb); 2802 if (ipv == 4) { 2803 struct rtable *rt = (struct rtable *) dst; 2804 __be32 *pkey = &ip_hdr(skb)->daddr; 2805 2806 if (rt->rt_gateway) 2807 pkey = &rt->rt_gateway; 2808 2809 /* IPv4 */ 2810 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type); 2811 memset(hdr->hdr.l3.dest_addr, 0, 12); 2812 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey; 2813 } else if (ipv == 6) { 2814 struct rt6_info *rt = (struct rt6_info *) dst; 2815 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr; 2816 2817 if (!ipv6_addr_any(&rt->rt6i_gateway)) 2818 pkey = &rt->rt6i_gateway; 2819 2820 /* IPv6 */ 2821 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type); 2822 if (card->info.type == QETH_CARD_TYPE_IQD) 2823 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU; 2824 memcpy(hdr->hdr.l3.dest_addr, pkey, 16); 2825 } else { 2826 if (!memcmp(skb->data + sizeof(struct qeth_hdr), 2827 skb->dev->broadcast, 6)) { 2828 /* broadcast? */ 2829 hdr->hdr.l3.flags = QETH_CAST_BROADCAST | 2830 QETH_HDR_PASSTHRU; 2831 } else { 2832 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ? 2833 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU : 2834 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU; 2835 } 2836 } 2837 rcu_read_unlock(); 2838 } 2839 2840 static inline void qeth_l3_hdr_csum(struct qeth_card *card, 2841 struct qeth_hdr *hdr, struct sk_buff *skb) 2842 { 2843 struct iphdr *iph = ip_hdr(skb); 2844 2845 /* tcph->check contains already the pseudo hdr checksum 2846 * so just set the header flags 2847 */ 2848 if (iph->protocol == IPPROTO_UDP) 2849 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP; 2850 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 2851 QETH_HDR_EXT_CSUM_HDR_REQ; 2852 iph->check = 0; 2853 if (card->options.performance_stats) 2854 card->perf_stats.tx_csum++; 2855 } 2856 2857 static void qeth_tso_fill_header(struct qeth_card *card, 2858 struct qeth_hdr *qhdr, struct sk_buff *skb) 2859 { 2860 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr; 2861 struct tcphdr *tcph = tcp_hdr(skb); 2862 struct iphdr *iph = ip_hdr(skb); 2863 struct ipv6hdr *ip6h = ipv6_hdr(skb); 2864 2865 /*fix header to TSO values ...*/ 2866 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO; 2867 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso); 2868 /*set values which are fix for the first approach ...*/ 2869 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso); 2870 hdr->ext.imb_hdr_no = 1; 2871 hdr->ext.hdr_type = 1; 2872 hdr->ext.hdr_version = 1; 2873 hdr->ext.hdr_len = 28; 2874 /*insert non-fix values */ 2875 hdr->ext.mss = skb_shinfo(skb)->gso_size; 2876 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4); 2877 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len - 2878 sizeof(struct qeth_hdr_tso)); 2879 tcph->check = 0; 2880 if (skb->protocol == ETH_P_IPV6) { 2881 ip6h->payload_len = 0; 2882 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr, 2883 0, IPPROTO_TCP, 0); 2884 } else { 2885 /*OSA want us to set these values ...*/ 2886 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 2887 0, IPPROTO_TCP, 0); 2888 iph->tot_len = 0; 2889 iph->check = 0; 2890 } 2891 } 2892 2893 static inline int qeth_l3_tso_elements(struct sk_buff *skb) 2894 { 2895 unsigned long tcpd = (unsigned long)tcp_hdr(skb) + 2896 tcp_hdr(skb)->doff * 4; 2897 int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data); 2898 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd); 2899 elements += skb_shinfo(skb)->nr_frags; 2900 return elements; 2901 } 2902 2903 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 2904 { 2905 int rc; 2906 u16 *tag; 2907 struct qeth_hdr *hdr = NULL; 2908 int elements_needed = 0; 2909 int elems; 2910 struct qeth_card *card = dev->ml_priv; 2911 struct sk_buff *new_skb = NULL; 2912 int ipv = qeth_get_ip_version(skb); 2913 int cast_type = qeth_l3_get_cast_type(card, skb); 2914 struct qeth_qdio_out_q *queue = card->qdio.out_qs 2915 [qeth_get_priority_queue(card, skb, ipv, cast_type)]; 2916 int tx_bytes = skb->len; 2917 bool large_send; 2918 int data_offset = -1; 2919 int nr_frags; 2920 2921 if (((card->info.type == QETH_CARD_TYPE_IQD) && 2922 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) || 2923 ((card->options.cq == QETH_CQ_ENABLED) && 2924 (skb->protocol != ETH_P_AF_IUCV)))) || 2925 card->options.sniffer) 2926 goto tx_drop; 2927 2928 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 2929 card->stats.tx_carrier_errors++; 2930 goto tx_drop; 2931 } 2932 2933 if ((cast_type == RTN_BROADCAST) && 2934 (card->info.broadcast_capable == 0)) 2935 goto tx_drop; 2936 2937 if (card->options.performance_stats) { 2938 card->perf_stats.outbound_cnt++; 2939 card->perf_stats.outbound_start_time = qeth_get_micros(); 2940 } 2941 2942 large_send = skb_is_gso(skb); 2943 2944 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) && 2945 (skb_shinfo(skb)->nr_frags == 0)) { 2946 new_skb = skb; 2947 if (new_skb->protocol == ETH_P_AF_IUCV) 2948 data_offset = 0; 2949 else 2950 data_offset = ETH_HLEN; 2951 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 2952 if (!hdr) 2953 goto tx_drop; 2954 elements_needed++; 2955 } else { 2956 /* create a clone with writeable headroom */ 2957 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso) 2958 + VLAN_HLEN); 2959 if (!new_skb) 2960 goto tx_drop; 2961 } 2962 2963 if (card->info.type == QETH_CARD_TYPE_IQD) { 2964 if (data_offset < 0) 2965 skb_pull(new_skb, ETH_HLEN); 2966 } else { 2967 if (ipv == 4) { 2968 skb_pull(new_skb, ETH_HLEN); 2969 } 2970 2971 if (ipv != 4 && vlan_tx_tag_present(new_skb)) { 2972 skb_push(new_skb, VLAN_HLEN); 2973 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4); 2974 skb_copy_to_linear_data_offset(new_skb, 4, 2975 new_skb->data + 8, 4); 2976 skb_copy_to_linear_data_offset(new_skb, 8, 2977 new_skb->data + 12, 4); 2978 tag = (u16 *)(new_skb->data + 12); 2979 *tag = __constant_htons(ETH_P_8021Q); 2980 *(tag + 1) = htons(vlan_tx_tag_get(new_skb)); 2981 } 2982 } 2983 2984 netif_stop_queue(dev); 2985 2986 /* fix hardware limitation: as long as we do not have sbal 2987 * chaining we can not send long frag lists 2988 */ 2989 if (large_send) { 2990 if (qeth_l3_tso_elements(new_skb) + 1 > 16) { 2991 if (skb_linearize(new_skb)) 2992 goto tx_drop; 2993 if (card->options.performance_stats) 2994 card->perf_stats.tx_lin++; 2995 } 2996 } 2997 2998 if (large_send && (cast_type == RTN_UNSPEC)) { 2999 hdr = (struct qeth_hdr *)skb_push(new_skb, 3000 sizeof(struct qeth_hdr_tso)); 3001 memset(hdr, 0, sizeof(struct qeth_hdr_tso)); 3002 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type); 3003 qeth_tso_fill_header(card, hdr, new_skb); 3004 elements_needed++; 3005 } else { 3006 if (data_offset < 0) { 3007 hdr = (struct qeth_hdr *)skb_push(new_skb, 3008 sizeof(struct qeth_hdr)); 3009 qeth_l3_fill_header(card, hdr, new_skb, ipv, 3010 cast_type); 3011 } else { 3012 if (new_skb->protocol == ETH_P_AF_IUCV) 3013 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb); 3014 else { 3015 qeth_l3_fill_header(card, hdr, new_skb, ipv, 3016 cast_type); 3017 hdr->hdr.l3.length = new_skb->len - data_offset; 3018 } 3019 } 3020 3021 if (skb->ip_summed == CHECKSUM_PARTIAL) 3022 qeth_l3_hdr_csum(card, hdr, new_skb); 3023 } 3024 3025 elems = qeth_get_elements_no(card, (void *)hdr, new_skb, 3026 elements_needed); 3027 if (!elems) { 3028 if (data_offset >= 0) 3029 kmem_cache_free(qeth_core_header_cache, hdr); 3030 goto tx_drop; 3031 } 3032 elements_needed += elems; 3033 nr_frags = skb_shinfo(new_skb)->nr_frags; 3034 3035 if (card->info.type != QETH_CARD_TYPE_IQD) { 3036 int len; 3037 if (large_send) 3038 len = ((unsigned long)tcp_hdr(new_skb) + 3039 tcp_hdr(new_skb)->doff * 4) - 3040 (unsigned long)new_skb->data; 3041 else 3042 len = sizeof(struct qeth_hdr_layer3); 3043 3044 if (qeth_hdr_chk_and_bounce(new_skb, len)) 3045 goto tx_drop; 3046 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 3047 elements_needed); 3048 } else 3049 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 3050 elements_needed, data_offset, 0); 3051 3052 if (!rc) { 3053 card->stats.tx_packets++; 3054 card->stats.tx_bytes += tx_bytes; 3055 if (new_skb != skb) 3056 dev_kfree_skb_any(skb); 3057 if (card->options.performance_stats) { 3058 if (large_send) { 3059 card->perf_stats.large_send_bytes += tx_bytes; 3060 card->perf_stats.large_send_cnt++; 3061 } 3062 if (nr_frags) { 3063 card->perf_stats.sg_skbs_sent++; 3064 /* nr_frags + skb->data */ 3065 card->perf_stats.sg_frags_sent += nr_frags + 1; 3066 } 3067 } 3068 rc = NETDEV_TX_OK; 3069 } else { 3070 if (data_offset >= 0) 3071 kmem_cache_free(qeth_core_header_cache, hdr); 3072 3073 if (rc == -EBUSY) { 3074 if (new_skb != skb) 3075 dev_kfree_skb_any(new_skb); 3076 return NETDEV_TX_BUSY; 3077 } else 3078 goto tx_drop; 3079 } 3080 3081 netif_wake_queue(dev); 3082 if (card->options.performance_stats) 3083 card->perf_stats.outbound_time += qeth_get_micros() - 3084 card->perf_stats.outbound_start_time; 3085 return rc; 3086 3087 tx_drop: 3088 card->stats.tx_dropped++; 3089 card->stats.tx_errors++; 3090 if ((new_skb != skb) && new_skb) 3091 dev_kfree_skb_any(new_skb); 3092 dev_kfree_skb_any(skb); 3093 netif_wake_queue(dev); 3094 return NETDEV_TX_OK; 3095 } 3096 3097 static int __qeth_l3_open(struct net_device *dev) 3098 { 3099 struct qeth_card *card = dev->ml_priv; 3100 int rc = 0; 3101 3102 QETH_CARD_TEXT(card, 4, "qethopen"); 3103 if (card->state == CARD_STATE_UP) 3104 return rc; 3105 if (card->state != CARD_STATE_SOFTSETUP) 3106 return -ENODEV; 3107 card->data.state = CH_STATE_UP; 3108 card->state = CARD_STATE_UP; 3109 netif_start_queue(dev); 3110 3111 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 3112 napi_enable(&card->napi); 3113 napi_schedule(&card->napi); 3114 } else 3115 rc = -EIO; 3116 return rc; 3117 } 3118 3119 static int qeth_l3_open(struct net_device *dev) 3120 { 3121 struct qeth_card *card = dev->ml_priv; 3122 3123 QETH_CARD_TEXT(card, 5, "qethope_"); 3124 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 3125 QETH_CARD_TEXT(card, 3, "openREC"); 3126 return -ERESTARTSYS; 3127 } 3128 return __qeth_l3_open(dev); 3129 } 3130 3131 static int qeth_l3_stop(struct net_device *dev) 3132 { 3133 struct qeth_card *card = dev->ml_priv; 3134 3135 QETH_CARD_TEXT(card, 4, "qethstop"); 3136 netif_tx_disable(dev); 3137 if (card->state == CARD_STATE_UP) { 3138 card->state = CARD_STATE_SOFTSETUP; 3139 napi_disable(&card->napi); 3140 } 3141 return 0; 3142 } 3143 3144 static netdev_features_t qeth_l3_fix_features(struct net_device *dev, 3145 netdev_features_t features) 3146 { 3147 struct qeth_card *card = dev->ml_priv; 3148 3149 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 3150 features &= ~NETIF_F_IP_CSUM; 3151 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 3152 features &= ~NETIF_F_TSO; 3153 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 3154 features &= ~NETIF_F_RXCSUM; 3155 3156 return features; 3157 } 3158 3159 static int qeth_l3_set_features(struct net_device *dev, 3160 netdev_features_t features) 3161 { 3162 struct qeth_card *card = dev->ml_priv; 3163 u32 changed = dev->features ^ features; 3164 int err; 3165 3166 if (!(changed & NETIF_F_RXCSUM)) 3167 return 0; 3168 3169 if (card->state == CARD_STATE_DOWN || 3170 card->state == CARD_STATE_RECOVER) 3171 return 0; 3172 3173 err = qeth_l3_set_rx_csum(card, features & NETIF_F_RXCSUM); 3174 if (err) 3175 dev->features = features ^ NETIF_F_RXCSUM; 3176 3177 return err; 3178 } 3179 3180 static const struct ethtool_ops qeth_l3_ethtool_ops = { 3181 .get_link = ethtool_op_get_link, 3182 .get_strings = qeth_core_get_strings, 3183 .get_ethtool_stats = qeth_core_get_ethtool_stats, 3184 .get_sset_count = qeth_core_get_sset_count, 3185 .get_drvinfo = qeth_core_get_drvinfo, 3186 .get_settings = qeth_core_ethtool_get_settings, 3187 }; 3188 3189 /* 3190 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting 3191 * NOARP on the netdevice is no option because it also turns off neighbor 3192 * solicitation. For IPv4 we install a neighbor_setup function. We don't want 3193 * arp resolution but we want the hard header (packet socket will work 3194 * e.g. tcpdump) 3195 */ 3196 static int qeth_l3_neigh_setup_noarp(struct neighbour *n) 3197 { 3198 n->nud_state = NUD_NOARP; 3199 memcpy(n->ha, "FAKELL", 6); 3200 n->output = n->ops->connected_output; 3201 return 0; 3202 } 3203 3204 static int 3205 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) 3206 { 3207 if (np->tbl->family == AF_INET) 3208 np->neigh_setup = qeth_l3_neigh_setup_noarp; 3209 3210 return 0; 3211 } 3212 3213 static const struct net_device_ops qeth_l3_netdev_ops = { 3214 .ndo_open = qeth_l3_open, 3215 .ndo_stop = qeth_l3_stop, 3216 .ndo_get_stats = qeth_get_stats, 3217 .ndo_start_xmit = qeth_l3_hard_start_xmit, 3218 .ndo_validate_addr = eth_validate_addr, 3219 .ndo_set_rx_mode = qeth_l3_set_multicast_list, 3220 .ndo_do_ioctl = qeth_l3_do_ioctl, 3221 .ndo_change_mtu = qeth_change_mtu, 3222 .ndo_fix_features = qeth_l3_fix_features, 3223 .ndo_set_features = qeth_l3_set_features, 3224 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 3225 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 3226 .ndo_tx_timeout = qeth_tx_timeout, 3227 }; 3228 3229 static const struct net_device_ops qeth_l3_osa_netdev_ops = { 3230 .ndo_open = qeth_l3_open, 3231 .ndo_stop = qeth_l3_stop, 3232 .ndo_get_stats = qeth_get_stats, 3233 .ndo_start_xmit = qeth_l3_hard_start_xmit, 3234 .ndo_validate_addr = eth_validate_addr, 3235 .ndo_set_rx_mode = qeth_l3_set_multicast_list, 3236 .ndo_do_ioctl = qeth_l3_do_ioctl, 3237 .ndo_change_mtu = qeth_change_mtu, 3238 .ndo_fix_features = qeth_l3_fix_features, 3239 .ndo_set_features = qeth_l3_set_features, 3240 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 3241 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 3242 .ndo_tx_timeout = qeth_tx_timeout, 3243 .ndo_neigh_setup = qeth_l3_neigh_setup, 3244 }; 3245 3246 static int qeth_l3_setup_netdev(struct qeth_card *card) 3247 { 3248 if (card->info.type == QETH_CARD_TYPE_OSD || 3249 card->info.type == QETH_CARD_TYPE_OSX) { 3250 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) || 3251 (card->info.link_type == QETH_LINK_TYPE_HSTR)) { 3252 pr_info("qeth_l3: ignoring TR device\n"); 3253 return -ENODEV; 3254 } else { 3255 card->dev = alloc_etherdev(0); 3256 if (!card->dev) 3257 return -ENODEV; 3258 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; 3259 3260 /*IPv6 address autoconfiguration stuff*/ 3261 qeth_l3_get_unique_id(card); 3262 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD)) 3263 card->dev->dev_id = card->info.unique_id & 3264 0xffff; 3265 if (!card->info.guestlan) { 3266 card->dev->hw_features = NETIF_F_SG | 3267 NETIF_F_RXCSUM | NETIF_F_IP_CSUM | 3268 NETIF_F_TSO; 3269 card->dev->features = NETIF_F_RXCSUM; 3270 } 3271 } 3272 } else if (card->info.type == QETH_CARD_TYPE_IQD) { 3273 card->dev = alloc_netdev(0, "hsi%d", ether_setup); 3274 if (!card->dev) 3275 return -ENODEV; 3276 card->dev->flags |= IFF_NOARP; 3277 card->dev->netdev_ops = &qeth_l3_netdev_ops; 3278 qeth_l3_iqd_read_initial_mac(card); 3279 if (card->options.hsuid[0]) 3280 memcpy(card->dev->perm_addr, card->options.hsuid, 9); 3281 } else 3282 return -ENODEV; 3283 3284 card->dev->ml_priv = card; 3285 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 3286 card->dev->mtu = card->info.initial_mtu; 3287 SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops); 3288 card->dev->features |= NETIF_F_HW_VLAN_TX | 3289 NETIF_F_HW_VLAN_RX | 3290 NETIF_F_HW_VLAN_FILTER; 3291 card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; 3292 card->dev->gso_max_size = 15 * PAGE_SIZE; 3293 3294 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 3295 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT); 3296 return register_netdev(card->dev); 3297 } 3298 3299 static int qeth_l3_probe_device(struct ccwgroup_device *gdev) 3300 { 3301 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3302 3303 qeth_l3_create_device_attributes(&gdev->dev); 3304 card->options.layer2 = 0; 3305 card->info.hwtrap = 0; 3306 return 0; 3307 } 3308 3309 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) 3310 { 3311 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 3312 3313 qeth_l3_remove_device_attributes(&cgdev->dev); 3314 3315 qeth_set_allowed_threads(card, 0, 1); 3316 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 3317 3318 if (cgdev->state == CCWGROUP_ONLINE) 3319 qeth_l3_set_offline(cgdev); 3320 3321 if (card->dev) { 3322 unregister_netdev(card->dev); 3323 card->dev = NULL; 3324 } 3325 3326 qeth_l3_clear_ip_list(card, 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 mutex_lock(&card->discipline_mutex); 3338 mutex_lock(&card->conf_mutex); 3339 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 3340 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 3341 3342 recover_flag = card->state; 3343 rc = qeth_core_hardsetup_card(card); 3344 if (rc) { 3345 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 3346 rc = -ENODEV; 3347 goto out_remove; 3348 } 3349 qeth_trace_features(card); 3350 3351 if (!card->dev && qeth_l3_setup_netdev(card)) { 3352 rc = -ENODEV; 3353 goto out_remove; 3354 } 3355 3356 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 3357 if (card->info.hwtrap && 3358 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 3359 card->info.hwtrap = 0; 3360 } else 3361 card->info.hwtrap = 0; 3362 3363 card->state = CARD_STATE_HARDSETUP; 3364 memset(&card->rx, 0, sizeof(struct qeth_rx)); 3365 qeth_print_status_message(card); 3366 3367 /* softsetup */ 3368 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 3369 3370 rc = qeth_send_startlan(card); 3371 if (rc) { 3372 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 3373 if (rc == 0xe080) { 3374 dev_warn(&card->gdev->dev, 3375 "The LAN is offline\n"); 3376 card->lan_online = 0; 3377 goto contin; 3378 } 3379 rc = -ENODEV; 3380 goto out_remove; 3381 } else 3382 card->lan_online = 1; 3383 3384 contin: 3385 rc = qeth_l3_setadapter_parms(card); 3386 if (rc) 3387 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 3388 if (!card->options.sniffer) { 3389 rc = qeth_l3_start_ipassists(card); 3390 if (rc) 3391 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 3392 rc = qeth_l3_setrouting_v4(card); 3393 if (rc) 3394 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); 3395 rc = qeth_l3_setrouting_v6(card); 3396 if (rc) 3397 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); 3398 } 3399 netif_tx_disable(card->dev); 3400 3401 rc = qeth_init_qdio_queues(card); 3402 if (rc) { 3403 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 3404 rc = -ENODEV; 3405 goto out_remove; 3406 } 3407 card->state = CARD_STATE_SOFTSETUP; 3408 3409 qeth_set_allowed_threads(card, 0xffffffff, 0); 3410 qeth_l3_set_ip_addr_list(card); 3411 if (card->lan_online) 3412 netif_carrier_on(card->dev); 3413 else 3414 netif_carrier_off(card->dev); 3415 if (recover_flag == CARD_STATE_RECOVER) { 3416 rtnl_lock(); 3417 if (recovery_mode) 3418 __qeth_l3_open(card->dev); 3419 else 3420 dev_open(card->dev); 3421 qeth_l3_set_multicast_list(card->dev); 3422 rtnl_unlock(); 3423 } 3424 /* let user_space know that device is online */ 3425 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 3426 mutex_unlock(&card->conf_mutex); 3427 mutex_unlock(&card->discipline_mutex); 3428 return 0; 3429 out_remove: 3430 qeth_l3_stop_card(card, 0); 3431 ccw_device_set_offline(CARD_DDEV(card)); 3432 ccw_device_set_offline(CARD_WDEV(card)); 3433 ccw_device_set_offline(CARD_RDEV(card)); 3434 if (recover_flag == CARD_STATE_RECOVER) 3435 card->state = CARD_STATE_RECOVER; 3436 else 3437 card->state = CARD_STATE_DOWN; 3438 mutex_unlock(&card->conf_mutex); 3439 mutex_unlock(&card->discipline_mutex); 3440 return rc; 3441 } 3442 3443 static int qeth_l3_set_online(struct ccwgroup_device *gdev) 3444 { 3445 return __qeth_l3_set_online(gdev, 0); 3446 } 3447 3448 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev, 3449 int recovery_mode) 3450 { 3451 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 3452 int rc = 0, rc2 = 0, rc3 = 0; 3453 enum qeth_card_states recover_flag; 3454 3455 mutex_lock(&card->discipline_mutex); 3456 mutex_lock(&card->conf_mutex); 3457 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 3458 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 3459 3460 if (card->dev && netif_carrier_ok(card->dev)) 3461 netif_carrier_off(card->dev); 3462 recover_flag = card->state; 3463 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 3464 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 3465 card->info.hwtrap = 1; 3466 } 3467 qeth_l3_stop_card(card, recovery_mode); 3468 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) { 3469 rtnl_lock(); 3470 call_netdevice_notifiers(NETDEV_REBOOT, card->dev); 3471 rtnl_unlock(); 3472 } 3473 rc = ccw_device_set_offline(CARD_DDEV(card)); 3474 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 3475 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 3476 if (!rc) 3477 rc = (rc2) ? rc2 : rc3; 3478 if (rc) 3479 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 3480 if (recover_flag == CARD_STATE_UP) 3481 card->state = CARD_STATE_RECOVER; 3482 /* let user_space know that device is offline */ 3483 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 3484 mutex_unlock(&card->conf_mutex); 3485 mutex_unlock(&card->discipline_mutex); 3486 return 0; 3487 } 3488 3489 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev) 3490 { 3491 return __qeth_l3_set_offline(cgdev, 0); 3492 } 3493 3494 static int qeth_l3_recover(void *ptr) 3495 { 3496 struct qeth_card *card; 3497 int rc = 0; 3498 3499 card = (struct qeth_card *) ptr; 3500 QETH_CARD_TEXT(card, 2, "recover1"); 3501 QETH_CARD_HEX(card, 2, &card, sizeof(void *)); 3502 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 3503 return 0; 3504 QETH_CARD_TEXT(card, 2, "recover2"); 3505 dev_warn(&card->gdev->dev, 3506 "A recovery process has been started for the device\n"); 3507 __qeth_l3_set_offline(card->gdev, 1); 3508 rc = __qeth_l3_set_online(card->gdev, 1); 3509 if (!rc) 3510 dev_info(&card->gdev->dev, 3511 "Device successfully recovered!\n"); 3512 else { 3513 if (rtnl_trylock()) { 3514 dev_close(card->dev); 3515 rtnl_unlock(); 3516 dev_warn(&card->gdev->dev, "The qeth device driver " 3517 "failed to recover an error on the device\n"); 3518 } 3519 } 3520 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 3521 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 3522 return 0; 3523 } 3524 3525 static void qeth_l3_shutdown(struct ccwgroup_device *gdev) 3526 { 3527 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3528 qeth_set_allowed_threads(card, 0, 1); 3529 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 3530 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 3531 qeth_qdio_clear_card(card, 0); 3532 qeth_clear_qdio_buffers(card); 3533 } 3534 3535 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev) 3536 { 3537 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3538 3539 if (card->dev) 3540 netif_device_detach(card->dev); 3541 qeth_set_allowed_threads(card, 0, 1); 3542 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 3543 if (gdev->state == CCWGROUP_OFFLINE) 3544 return 0; 3545 if (card->state == CARD_STATE_UP) { 3546 if (card->info.hwtrap) 3547 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 3548 __qeth_l3_set_offline(card->gdev, 1); 3549 } else 3550 __qeth_l3_set_offline(card->gdev, 0); 3551 return 0; 3552 } 3553 3554 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev) 3555 { 3556 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3557 int rc = 0; 3558 3559 if (gdev->state == CCWGROUP_OFFLINE) 3560 goto out; 3561 3562 if (card->state == CARD_STATE_RECOVER) { 3563 rc = __qeth_l3_set_online(card->gdev, 1); 3564 if (rc) { 3565 rtnl_lock(); 3566 dev_close(card->dev); 3567 rtnl_unlock(); 3568 } 3569 } else 3570 rc = __qeth_l3_set_online(card->gdev, 0); 3571 out: 3572 qeth_set_allowed_threads(card, 0xffffffff, 0); 3573 if (card->dev) 3574 netif_device_attach(card->dev); 3575 if (rc) 3576 dev_warn(&card->gdev->dev, "The qeth device driver " 3577 "failed to recover an error on the device\n"); 3578 return rc; 3579 } 3580 3581 struct qeth_discipline qeth_l3_discipline = { 3582 .start_poll = qeth_qdio_start_poll, 3583 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 3584 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 3585 .recover = qeth_l3_recover, 3586 .setup = qeth_l3_probe_device, 3587 .remove = qeth_l3_remove_device, 3588 .set_online = qeth_l3_set_online, 3589 .set_offline = qeth_l3_set_offline, 3590 .shutdown = qeth_l3_shutdown, 3591 .freeze = qeth_l3_pm_suspend, 3592 .thaw = qeth_l3_pm_resume, 3593 .restore = qeth_l3_pm_resume, 3594 }; 3595 EXPORT_SYMBOL_GPL(qeth_l3_discipline); 3596 3597 static int qeth_l3_ip_event(struct notifier_block *this, 3598 unsigned long event, void *ptr) 3599 { 3600 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 3601 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev; 3602 struct qeth_ipaddr *addr; 3603 struct qeth_card *card; 3604 3605 if (dev_net(dev) != &init_net) 3606 return NOTIFY_DONE; 3607 3608 card = qeth_l3_get_card_from_dev(dev); 3609 if (!card) 3610 return NOTIFY_DONE; 3611 QETH_CARD_TEXT(card, 3, "ipevent"); 3612 3613 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 3614 if (addr != NULL) { 3615 addr->u.a4.addr = ifa->ifa_address; 3616 addr->u.a4.mask = ifa->ifa_mask; 3617 addr->type = QETH_IP_TYPE_NORMAL; 3618 } else 3619 goto out; 3620 3621 switch (event) { 3622 case NETDEV_UP: 3623 if (!qeth_l3_add_ip(card, addr)) 3624 kfree(addr); 3625 break; 3626 case NETDEV_DOWN: 3627 if (!qeth_l3_delete_ip(card, addr)) 3628 kfree(addr); 3629 break; 3630 default: 3631 break; 3632 } 3633 qeth_l3_set_ip_addr_list(card); 3634 out: 3635 return NOTIFY_DONE; 3636 } 3637 3638 static struct notifier_block qeth_l3_ip_notifier = { 3639 qeth_l3_ip_event, 3640 NULL, 3641 }; 3642 3643 #ifdef CONFIG_QETH_IPV6 3644 /** 3645 * IPv6 event handler 3646 */ 3647 static int qeth_l3_ip6_event(struct notifier_block *this, 3648 unsigned long event, void *ptr) 3649 { 3650 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 3651 struct net_device *dev = (struct net_device *)ifa->idev->dev; 3652 struct qeth_ipaddr *addr; 3653 struct qeth_card *card; 3654 3655 card = qeth_l3_get_card_from_dev(dev); 3656 if (!card) 3657 return NOTIFY_DONE; 3658 QETH_CARD_TEXT(card, 3, "ip6event"); 3659 if (!qeth_is_supported(card, IPA_IPV6)) 3660 return NOTIFY_DONE; 3661 3662 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 3663 if (addr != NULL) { 3664 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr)); 3665 addr->u.a6.pfxlen = ifa->prefix_len; 3666 addr->type = QETH_IP_TYPE_NORMAL; 3667 } else 3668 goto out; 3669 3670 switch (event) { 3671 case NETDEV_UP: 3672 if (!qeth_l3_add_ip(card, addr)) 3673 kfree(addr); 3674 break; 3675 case NETDEV_DOWN: 3676 if (!qeth_l3_delete_ip(card, addr)) 3677 kfree(addr); 3678 break; 3679 default: 3680 break; 3681 } 3682 qeth_l3_set_ip_addr_list(card); 3683 out: 3684 return NOTIFY_DONE; 3685 } 3686 3687 static struct notifier_block qeth_l3_ip6_notifier = { 3688 qeth_l3_ip6_event, 3689 NULL, 3690 }; 3691 #endif 3692 3693 static int qeth_l3_register_notifiers(void) 3694 { 3695 int rc; 3696 3697 QETH_DBF_TEXT(SETUP, 5, "regnotif"); 3698 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); 3699 if (rc) 3700 return rc; 3701 #ifdef CONFIG_QETH_IPV6 3702 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); 3703 if (rc) { 3704 unregister_inetaddr_notifier(&qeth_l3_ip_notifier); 3705 return rc; 3706 } 3707 #else 3708 pr_warning("There is no IPv6 support for the layer 3 discipline\n"); 3709 #endif 3710 return 0; 3711 } 3712 3713 static void qeth_l3_unregister_notifiers(void) 3714 { 3715 3716 QETH_DBF_TEXT(SETUP, 5, "unregnot"); 3717 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); 3718 #ifdef CONFIG_QETH_IPV6 3719 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); 3720 #endif /* QETH_IPV6 */ 3721 } 3722 3723 static int __init qeth_l3_init(void) 3724 { 3725 int rc = 0; 3726 3727 pr_info("register layer 3 discipline\n"); 3728 rc = qeth_l3_register_notifiers(); 3729 return rc; 3730 } 3731 3732 static void __exit qeth_l3_exit(void) 3733 { 3734 qeth_l3_unregister_notifiers(); 3735 pr_info("unregister layer 3 discipline\n"); 3736 } 3737 3738 module_init(qeth_l3_init); 3739 module_exit(qeth_l3_exit); 3740 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 3741 MODULE_DESCRIPTION("qeth layer 3 discipline"); 3742 MODULE_LICENSE("GPL"); 3743