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 static 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 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr) 64 { 65 int count = 0, rc = 0; 66 unsigned 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 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf) 82 { 83 sprintf(buf, "%pI6", addr); 84 } 85 86 static 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 (!qeth_card_hw_is_reachable(card) || card->options.sniffer) 436 return; 437 438 spin_lock_irqsave(&card->ip_lock, flags); 439 tbd_list = card->ip_tbd_list; 440 card->ip_tbd_list = kzalloc(sizeof(struct list_head), GFP_ATOMIC); 441 if (!card->ip_tbd_list) { 442 QETH_CARD_TEXT(card, 0, "silnomem"); 443 card->ip_tbd_list = tbd_list; 444 spin_unlock_irqrestore(&card->ip_lock, flags); 445 return; 446 } else 447 INIT_LIST_HEAD(card->ip_tbd_list); 448 449 while (!list_empty(tbd_list)) { 450 todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry); 451 list_del(&todo->entry); 452 if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) { 453 __qeth_l3_delete_all_mc(card, &flags); 454 kfree(todo); 455 continue; 456 } 457 rc = __qeth_l3_ref_ip_on_card(card, todo, &addr); 458 if (rc == 0) { 459 /* nothing to be done; only adjusted refcount */ 460 kfree(todo); 461 } else if (rc == 1) { 462 /* new entry to be added to on-card list */ 463 spin_unlock_irqrestore(&card->ip_lock, flags); 464 rc = qeth_l3_register_addr_entry(card, todo); 465 spin_lock_irqsave(&card->ip_lock, flags); 466 if (!rc || (rc == IPA_RC_LAN_OFFLINE)) 467 list_add_tail(&todo->entry, &card->ip_list); 468 else 469 kfree(todo); 470 } else if (rc == -1) { 471 /* on-card entry to be removed */ 472 list_del_init(&addr->entry); 473 spin_unlock_irqrestore(&card->ip_lock, flags); 474 rc = qeth_l3_deregister_addr_entry(card, addr); 475 spin_lock_irqsave(&card->ip_lock, flags); 476 if (!rc || (rc == IPA_RC_IP_ADDRESS_NOT_DEFINED)) 477 kfree(addr); 478 else 479 list_add_tail(&addr->entry, &card->ip_list); 480 kfree(todo); 481 } 482 } 483 spin_unlock_irqrestore(&card->ip_lock, flags); 484 kfree(tbd_list); 485 } 486 487 static void qeth_l3_clear_ip_list(struct qeth_card *card, int recover) 488 { 489 struct qeth_ipaddr *addr, *tmp; 490 unsigned long flags; 491 492 QETH_CARD_TEXT(card, 4, "clearip"); 493 if (recover && card->options.sniffer) 494 return; 495 spin_lock_irqsave(&card->ip_lock, flags); 496 /* clear todo list */ 497 list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) { 498 list_del(&addr->entry); 499 kfree(addr); 500 } 501 502 while (!list_empty(&card->ip_list)) { 503 addr = list_entry(card->ip_list.next, 504 struct qeth_ipaddr, entry); 505 list_del_init(&addr->entry); 506 if (!recover || addr->is_multicast) { 507 kfree(addr); 508 continue; 509 } 510 list_add_tail(&addr->entry, card->ip_tbd_list); 511 } 512 spin_unlock_irqrestore(&card->ip_lock, flags); 513 } 514 515 static int qeth_l3_address_exists_in_list(struct list_head *list, 516 struct qeth_ipaddr *addr, int same_type) 517 { 518 struct qeth_ipaddr *tmp; 519 520 list_for_each_entry(tmp, list, entry) { 521 if ((tmp->proto == QETH_PROT_IPV4) && 522 (addr->proto == QETH_PROT_IPV4) && 523 ((same_type && (tmp->type == addr->type)) || 524 (!same_type && (tmp->type != addr->type))) && 525 (tmp->u.a4.addr == addr->u.a4.addr)) 526 return 1; 527 528 if ((tmp->proto == QETH_PROT_IPV6) && 529 (addr->proto == QETH_PROT_IPV6) && 530 ((same_type && (tmp->type == addr->type)) || 531 (!same_type && (tmp->type != addr->type))) && 532 (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr, 533 sizeof(struct in6_addr)) == 0)) 534 return 1; 535 536 } 537 return 0; 538 } 539 540 static int qeth_l3_send_setdelmc(struct qeth_card *card, 541 struct qeth_ipaddr *addr, int ipacmd) 542 { 543 int rc; 544 struct qeth_cmd_buffer *iob; 545 struct qeth_ipa_cmd *cmd; 546 547 QETH_CARD_TEXT(card, 4, "setdelmc"); 548 549 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 550 if (!iob) 551 return -ENOMEM; 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 if (!iob) 592 return -ENOMEM; 593 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 594 if (addr->proto == QETH_PROT_IPV6) { 595 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr, 596 sizeof(struct in6_addr)); 597 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen); 598 memcpy(cmd->data.setdelip6.mask, netmask, 599 sizeof(struct in6_addr)); 600 cmd->data.setdelip6.flags = flags; 601 } else { 602 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4); 603 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4); 604 cmd->data.setdelip4.flags = flags; 605 } 606 607 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 608 609 return rc; 610 } 611 612 static int qeth_l3_send_setrouting(struct qeth_card *card, 613 enum qeth_routing_types type, enum qeth_prot_versions prot) 614 { 615 int rc; 616 struct qeth_ipa_cmd *cmd; 617 struct qeth_cmd_buffer *iob; 618 619 QETH_CARD_TEXT(card, 4, "setroutg"); 620 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot); 621 if (!iob) 622 return -ENOMEM; 623 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 624 cmd->data.setrtg.type = (type); 625 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 626 627 return rc; 628 } 629 630 static int qeth_l3_correct_routing_type(struct qeth_card *card, 631 enum qeth_routing_types *type, enum qeth_prot_versions prot) 632 { 633 if (card->info.type == QETH_CARD_TYPE_IQD) { 634 switch (*type) { 635 case NO_ROUTER: 636 case PRIMARY_CONNECTOR: 637 case SECONDARY_CONNECTOR: 638 case MULTICAST_ROUTER: 639 return 0; 640 default: 641 goto out_inval; 642 } 643 } else { 644 switch (*type) { 645 case NO_ROUTER: 646 case PRIMARY_ROUTER: 647 case SECONDARY_ROUTER: 648 return 0; 649 case MULTICAST_ROUTER: 650 if (qeth_is_ipafunc_supported(card, prot, 651 IPA_OSA_MC_ROUTER)) 652 return 0; 653 default: 654 goto out_inval; 655 } 656 } 657 out_inval: 658 *type = NO_ROUTER; 659 return -EINVAL; 660 } 661 662 int qeth_l3_setrouting_v4(struct qeth_card *card) 663 { 664 int rc; 665 666 QETH_CARD_TEXT(card, 3, "setrtg4"); 667 668 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, 669 QETH_PROT_IPV4); 670 if (rc) 671 return rc; 672 673 rc = qeth_l3_send_setrouting(card, card->options.route4.type, 674 QETH_PROT_IPV4); 675 if (rc) { 676 card->options.route4.type = NO_ROUTER; 677 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" 678 " on %s. Type set to 'no router'.\n", rc, 679 QETH_CARD_IFNAME(card)); 680 } 681 return rc; 682 } 683 684 int qeth_l3_setrouting_v6(struct qeth_card *card) 685 { 686 int rc = 0; 687 688 QETH_CARD_TEXT(card, 3, "setrtg6"); 689 #ifdef CONFIG_QETH_IPV6 690 691 if (!qeth_is_supported(card, IPA_IPV6)) 692 return 0; 693 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type, 694 QETH_PROT_IPV6); 695 if (rc) 696 return rc; 697 698 rc = qeth_l3_send_setrouting(card, card->options.route6.type, 699 QETH_PROT_IPV6); 700 if (rc) { 701 card->options.route6.type = NO_ROUTER; 702 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" 703 " on %s. Type set to 'no router'.\n", rc, 704 QETH_CARD_IFNAME(card)); 705 } 706 #endif 707 return rc; 708 } 709 710 /* 711 * IP address takeover related functions 712 */ 713 static void qeth_l3_clear_ipato_list(struct qeth_card *card) 714 { 715 716 struct qeth_ipato_entry *ipatoe, *tmp; 717 unsigned long flags; 718 719 spin_lock_irqsave(&card->ip_lock, flags); 720 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 721 list_del(&ipatoe->entry); 722 kfree(ipatoe); 723 } 724 spin_unlock_irqrestore(&card->ip_lock, flags); 725 } 726 727 int qeth_l3_add_ipato_entry(struct qeth_card *card, 728 struct qeth_ipato_entry *new) 729 { 730 struct qeth_ipato_entry *ipatoe; 731 unsigned long flags; 732 int rc = 0; 733 734 QETH_CARD_TEXT(card, 2, "addipato"); 735 spin_lock_irqsave(&card->ip_lock, flags); 736 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 737 if (ipatoe->proto != new->proto) 738 continue; 739 if (!memcmp(ipatoe->addr, new->addr, 740 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) && 741 (ipatoe->mask_bits == new->mask_bits)) { 742 rc = -EEXIST; 743 break; 744 } 745 } 746 if (!rc) 747 list_add_tail(&new->entry, &card->ipato.entries); 748 749 spin_unlock_irqrestore(&card->ip_lock, flags); 750 return rc; 751 } 752 753 void qeth_l3_del_ipato_entry(struct qeth_card *card, 754 enum qeth_prot_versions proto, u8 *addr, int mask_bits) 755 { 756 struct qeth_ipato_entry *ipatoe, *tmp; 757 unsigned long flags; 758 759 QETH_CARD_TEXT(card, 2, "delipato"); 760 spin_lock_irqsave(&card->ip_lock, flags); 761 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 762 if (ipatoe->proto != proto) 763 continue; 764 if (!memcmp(ipatoe->addr, addr, 765 (proto == QETH_PROT_IPV4)? 4:16) && 766 (ipatoe->mask_bits == mask_bits)) { 767 list_del(&ipatoe->entry); 768 kfree(ipatoe); 769 } 770 } 771 spin_unlock_irqrestore(&card->ip_lock, flags); 772 } 773 774 /* 775 * VIPA related functions 776 */ 777 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto, 778 const u8 *addr) 779 { 780 struct qeth_ipaddr *ipaddr; 781 unsigned long flags; 782 int rc = 0; 783 784 ipaddr = qeth_l3_get_addr_buffer(proto); 785 if (ipaddr) { 786 if (proto == QETH_PROT_IPV4) { 787 QETH_CARD_TEXT(card, 2, "addvipa4"); 788 memcpy(&ipaddr->u.a4.addr, addr, 4); 789 ipaddr->u.a4.mask = 0; 790 } else if (proto == QETH_PROT_IPV6) { 791 QETH_CARD_TEXT(card, 2, "addvipa6"); 792 memcpy(&ipaddr->u.a6.addr, addr, 16); 793 ipaddr->u.a6.pfxlen = 0; 794 } 795 ipaddr->type = QETH_IP_TYPE_VIPA; 796 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG; 797 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG; 798 } else 799 return -ENOMEM; 800 spin_lock_irqsave(&card->ip_lock, flags); 801 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) || 802 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0)) 803 rc = -EEXIST; 804 spin_unlock_irqrestore(&card->ip_lock, flags); 805 if (rc) { 806 kfree(ipaddr); 807 return rc; 808 } 809 if (!qeth_l3_add_ip(card, ipaddr)) 810 kfree(ipaddr); 811 qeth_l3_set_ip_addr_list(card); 812 return rc; 813 } 814 815 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto, 816 const u8 *addr) 817 { 818 struct qeth_ipaddr *ipaddr; 819 820 ipaddr = qeth_l3_get_addr_buffer(proto); 821 if (ipaddr) { 822 if (proto == QETH_PROT_IPV4) { 823 QETH_CARD_TEXT(card, 2, "delvipa4"); 824 memcpy(&ipaddr->u.a4.addr, addr, 4); 825 ipaddr->u.a4.mask = 0; 826 } else if (proto == QETH_PROT_IPV6) { 827 QETH_CARD_TEXT(card, 2, "delvipa6"); 828 memcpy(&ipaddr->u.a6.addr, addr, 16); 829 ipaddr->u.a6.pfxlen = 0; 830 } 831 ipaddr->type = QETH_IP_TYPE_VIPA; 832 } else 833 return; 834 if (!qeth_l3_delete_ip(card, ipaddr)) 835 kfree(ipaddr); 836 qeth_l3_set_ip_addr_list(card); 837 } 838 839 /* 840 * proxy ARP related functions 841 */ 842 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto, 843 const u8 *addr) 844 { 845 struct qeth_ipaddr *ipaddr; 846 unsigned long flags; 847 int rc = 0; 848 849 ipaddr = qeth_l3_get_addr_buffer(proto); 850 if (ipaddr) { 851 if (proto == QETH_PROT_IPV4) { 852 QETH_CARD_TEXT(card, 2, "addrxip4"); 853 memcpy(&ipaddr->u.a4.addr, addr, 4); 854 ipaddr->u.a4.mask = 0; 855 } else if (proto == QETH_PROT_IPV6) { 856 QETH_CARD_TEXT(card, 2, "addrxip6"); 857 memcpy(&ipaddr->u.a6.addr, addr, 16); 858 ipaddr->u.a6.pfxlen = 0; 859 } 860 ipaddr->type = QETH_IP_TYPE_RXIP; 861 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG; 862 ipaddr->del_flags = 0; 863 } else 864 return -ENOMEM; 865 spin_lock_irqsave(&card->ip_lock, flags); 866 if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) || 867 qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0)) 868 rc = -EEXIST; 869 spin_unlock_irqrestore(&card->ip_lock, flags); 870 if (rc) { 871 kfree(ipaddr); 872 return rc; 873 } 874 if (!qeth_l3_add_ip(card, ipaddr)) 875 kfree(ipaddr); 876 qeth_l3_set_ip_addr_list(card); 877 return 0; 878 } 879 880 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto, 881 const u8 *addr) 882 { 883 struct qeth_ipaddr *ipaddr; 884 885 ipaddr = qeth_l3_get_addr_buffer(proto); 886 if (ipaddr) { 887 if (proto == QETH_PROT_IPV4) { 888 QETH_CARD_TEXT(card, 2, "addrxip4"); 889 memcpy(&ipaddr->u.a4.addr, addr, 4); 890 ipaddr->u.a4.mask = 0; 891 } else if (proto == QETH_PROT_IPV6) { 892 QETH_CARD_TEXT(card, 2, "addrxip6"); 893 memcpy(&ipaddr->u.a6.addr, addr, 16); 894 ipaddr->u.a6.pfxlen = 0; 895 } 896 ipaddr->type = QETH_IP_TYPE_RXIP; 897 } else 898 return; 899 if (!qeth_l3_delete_ip(card, ipaddr)) 900 kfree(ipaddr); 901 qeth_l3_set_ip_addr_list(card); 902 } 903 904 static int qeth_l3_register_addr_entry(struct qeth_card *card, 905 struct qeth_ipaddr *addr) 906 { 907 char buf[50]; 908 int rc = 0; 909 int cnt = 3; 910 911 if (addr->proto == QETH_PROT_IPV4) { 912 QETH_CARD_TEXT(card, 2, "setaddr4"); 913 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 914 } else if (addr->proto == QETH_PROT_IPV6) { 915 QETH_CARD_TEXT(card, 2, "setaddr6"); 916 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 917 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 918 } else { 919 QETH_CARD_TEXT(card, 2, "setaddr?"); 920 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 921 } 922 do { 923 if (addr->is_multicast) 924 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); 925 else 926 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP, 927 addr->set_flags); 928 if (rc) 929 QETH_CARD_TEXT(card, 2, "failed"); 930 } while ((--cnt > 0) && rc); 931 if (rc) { 932 QETH_CARD_TEXT(card, 2, "FAILED"); 933 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); 934 dev_warn(&card->gdev->dev, 935 "Registering IP address %s failed\n", buf); 936 } 937 return rc; 938 } 939 940 static int qeth_l3_deregister_addr_entry(struct qeth_card *card, 941 struct qeth_ipaddr *addr) 942 { 943 int rc = 0; 944 945 if (addr->proto == QETH_PROT_IPV4) { 946 QETH_CARD_TEXT(card, 2, "deladdr4"); 947 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 948 } else if (addr->proto == QETH_PROT_IPV6) { 949 QETH_CARD_TEXT(card, 2, "deladdr6"); 950 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 951 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 952 } else { 953 QETH_CARD_TEXT(card, 2, "deladdr?"); 954 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 955 } 956 if (addr->is_multicast) 957 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); 958 else 959 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP, 960 addr->del_flags); 961 if (rc) 962 QETH_CARD_TEXT(card, 2, "failed"); 963 964 return rc; 965 } 966 967 static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type) 968 { 969 if (cast_type == RTN_MULTICAST) 970 return QETH_CAST_MULTICAST; 971 if (cast_type == RTN_BROADCAST) 972 return QETH_CAST_BROADCAST; 973 return QETH_CAST_UNICAST; 974 } 975 976 static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type) 977 { 978 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6; 979 if (cast_type == RTN_MULTICAST) 980 return ct | QETH_CAST_MULTICAST; 981 if (cast_type == RTN_ANYCAST) 982 return ct | QETH_CAST_ANYCAST; 983 if (cast_type == RTN_BROADCAST) 984 return ct | QETH_CAST_BROADCAST; 985 return ct | QETH_CAST_UNICAST; 986 } 987 988 static int qeth_l3_setadapter_parms(struct qeth_card *card) 989 { 990 int rc; 991 992 QETH_DBF_TEXT(SETUP, 2, "setadprm"); 993 994 if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 995 dev_info(&card->gdev->dev, 996 "set adapter parameters not supported.\n"); 997 QETH_DBF_TEXT(SETUP, 2, " notsupp"); 998 return 0; 999 } 1000 rc = qeth_query_setadapterparms(card); 1001 if (rc) { 1002 QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: " 1003 "0x%x\n", dev_name(&card->gdev->dev), rc); 1004 return rc; 1005 } 1006 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { 1007 rc = qeth_setadpparms_change_macaddr(card); 1008 if (rc) 1009 dev_warn(&card->gdev->dev, "Reading the adapter MAC" 1010 " address failed\n"); 1011 } 1012 1013 return rc; 1014 } 1015 1016 static int qeth_l3_default_setassparms_cb(struct qeth_card *card, 1017 struct qeth_reply *reply, unsigned long data) 1018 { 1019 struct qeth_ipa_cmd *cmd; 1020 1021 QETH_CARD_TEXT(card, 4, "defadpcb"); 1022 1023 cmd = (struct qeth_ipa_cmd *) data; 1024 if (cmd->hdr.return_code == 0) { 1025 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 1026 if (cmd->hdr.prot_version == QETH_PROT_IPV4) 1027 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; 1028 if (cmd->hdr.prot_version == QETH_PROT_IPV6) 1029 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; 1030 } 1031 if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM && 1032 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 1033 card->info.csum_mask = cmd->data.setassparms.data.flags_32bit; 1034 QETH_CARD_TEXT_(card, 3, "csum:%d", card->info.csum_mask); 1035 } 1036 if (cmd->data.setassparms.hdr.assist_no == IPA_OUTBOUND_CHECKSUM && 1037 cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { 1038 card->info.tx_csum_mask = 1039 cmd->data.setassparms.data.flags_32bit; 1040 QETH_CARD_TEXT_(card, 3, "tcsu:%d", card->info.tx_csum_mask); 1041 } 1042 1043 return 0; 1044 } 1045 1046 #ifdef CONFIG_QETH_IPV6 1047 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card, 1048 enum qeth_ipa_funcs ipa_func, __u16 cmd_code) 1049 { 1050 int rc; 1051 struct qeth_cmd_buffer *iob; 1052 1053 QETH_CARD_TEXT(card, 4, "simassp6"); 1054 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 1055 0, QETH_PROT_IPV6); 1056 if (!iob) 1057 return -ENOMEM; 1058 rc = qeth_send_setassparms(card, iob, 0, 0, 1059 qeth_l3_default_setassparms_cb, NULL); 1060 return rc; 1061 } 1062 #endif 1063 1064 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) 1065 { 1066 int rc; 1067 1068 QETH_CARD_TEXT(card, 3, "ipaarp"); 1069 1070 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1071 dev_info(&card->gdev->dev, 1072 "ARP processing not supported on %s!\n", 1073 QETH_CARD_IFNAME(card)); 1074 return 0; 1075 } 1076 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 1077 IPA_CMD_ASS_START, 0); 1078 if (rc) { 1079 dev_warn(&card->gdev->dev, 1080 "Starting ARP processing support for %s failed\n", 1081 QETH_CARD_IFNAME(card)); 1082 } 1083 return rc; 1084 } 1085 1086 static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card) 1087 { 1088 int rc; 1089 1090 QETH_CARD_TEXT(card, 3, "ipaipfrg"); 1091 1092 if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) { 1093 dev_info(&card->gdev->dev, 1094 "Hardware IP fragmentation not supported on %s\n", 1095 QETH_CARD_IFNAME(card)); 1096 return -EOPNOTSUPP; 1097 } 1098 1099 rc = qeth_send_simple_setassparms(card, IPA_IP_FRAGMENTATION, 1100 IPA_CMD_ASS_START, 0); 1101 if (rc) { 1102 dev_warn(&card->gdev->dev, 1103 "Starting IP fragmentation support for %s failed\n", 1104 QETH_CARD_IFNAME(card)); 1105 } else 1106 dev_info(&card->gdev->dev, 1107 "Hardware IP fragmentation enabled \n"); 1108 return rc; 1109 } 1110 1111 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 1112 { 1113 int rc; 1114 1115 QETH_CARD_TEXT(card, 3, "stsrcmac"); 1116 1117 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { 1118 dev_info(&card->gdev->dev, 1119 "Inbound source MAC-address not supported on %s\n", 1120 QETH_CARD_IFNAME(card)); 1121 return -EOPNOTSUPP; 1122 } 1123 1124 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC, 1125 IPA_CMD_ASS_START, 0); 1126 if (rc) 1127 dev_warn(&card->gdev->dev, 1128 "Starting source MAC-address support for %s failed\n", 1129 QETH_CARD_IFNAME(card)); 1130 return rc; 1131 } 1132 1133 static int qeth_l3_start_ipa_vlan(struct qeth_card *card) 1134 { 1135 int rc = 0; 1136 1137 QETH_CARD_TEXT(card, 3, "strtvlan"); 1138 1139 if (!qeth_is_supported(card, IPA_FULL_VLAN)) { 1140 dev_info(&card->gdev->dev, 1141 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card)); 1142 return -EOPNOTSUPP; 1143 } 1144 1145 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO, 1146 IPA_CMD_ASS_START, 0); 1147 if (rc) { 1148 dev_warn(&card->gdev->dev, 1149 "Starting VLAN support for %s failed\n", 1150 QETH_CARD_IFNAME(card)); 1151 } else { 1152 dev_info(&card->gdev->dev, "VLAN enabled\n"); 1153 } 1154 return rc; 1155 } 1156 1157 static int qeth_l3_start_ipa_multicast(struct qeth_card *card) 1158 { 1159 int rc; 1160 1161 QETH_CARD_TEXT(card, 3, "stmcast"); 1162 1163 if (!qeth_is_supported(card, IPA_MULTICASTING)) { 1164 dev_info(&card->gdev->dev, 1165 "Multicast not supported on %s\n", 1166 QETH_CARD_IFNAME(card)); 1167 return -EOPNOTSUPP; 1168 } 1169 1170 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING, 1171 IPA_CMD_ASS_START, 0); 1172 if (rc) { 1173 dev_warn(&card->gdev->dev, 1174 "Starting multicast support for %s failed\n", 1175 QETH_CARD_IFNAME(card)); 1176 } else { 1177 dev_info(&card->gdev->dev, "Multicast enabled\n"); 1178 card->dev->flags |= IFF_MULTICAST; 1179 } 1180 return rc; 1181 } 1182 1183 #ifdef CONFIG_QETH_IPV6 1184 static int qeth_l3_softsetup_ipv6(struct qeth_card *card) 1185 { 1186 int rc; 1187 1188 QETH_CARD_TEXT(card, 3, "softipv6"); 1189 1190 if (card->info.type == QETH_CARD_TYPE_IQD) 1191 goto out; 1192 1193 rc = qeth_query_ipassists(card, QETH_PROT_IPV6); 1194 if (rc) { 1195 dev_err(&card->gdev->dev, 1196 "Activating IPv6 support for %s failed\n", 1197 QETH_CARD_IFNAME(card)); 1198 return rc; 1199 } 1200 rc = qeth_send_simple_setassparms(card, IPA_IPV6, 1201 IPA_CMD_ASS_START, 3); 1202 if (rc) { 1203 dev_err(&card->gdev->dev, 1204 "Activating IPv6 support for %s failed\n", 1205 QETH_CARD_IFNAME(card)); 1206 return rc; 1207 } 1208 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6, 1209 IPA_CMD_ASS_START); 1210 if (rc) { 1211 dev_err(&card->gdev->dev, 1212 "Activating IPv6 support for %s failed\n", 1213 QETH_CARD_IFNAME(card)); 1214 return rc; 1215 } 1216 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU, 1217 IPA_CMD_ASS_START); 1218 if (rc) { 1219 dev_warn(&card->gdev->dev, 1220 "Enabling the passthrough mode for %s failed\n", 1221 QETH_CARD_IFNAME(card)); 1222 return rc; 1223 } 1224 out: 1225 dev_info(&card->gdev->dev, "IPV6 enabled\n"); 1226 return 0; 1227 } 1228 #endif 1229 1230 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) 1231 { 1232 int rc = 0; 1233 1234 QETH_CARD_TEXT(card, 3, "strtipv6"); 1235 1236 if (!qeth_is_supported(card, IPA_IPV6)) { 1237 dev_info(&card->gdev->dev, 1238 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card)); 1239 return 0; 1240 } 1241 #ifdef CONFIG_QETH_IPV6 1242 rc = qeth_l3_softsetup_ipv6(card); 1243 #endif 1244 return rc ; 1245 } 1246 1247 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) 1248 { 1249 int rc; 1250 1251 QETH_CARD_TEXT(card, 3, "stbrdcst"); 1252 card->info.broadcast_capable = 0; 1253 if (!qeth_is_supported(card, IPA_FILTERING)) { 1254 dev_info(&card->gdev->dev, 1255 "Broadcast not supported on %s\n", 1256 QETH_CARD_IFNAME(card)); 1257 rc = -EOPNOTSUPP; 1258 goto out; 1259 } 1260 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 1261 IPA_CMD_ASS_START, 0); 1262 if (rc) { 1263 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for " 1264 "%s failed\n", QETH_CARD_IFNAME(card)); 1265 goto out; 1266 } 1267 1268 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 1269 IPA_CMD_ASS_CONFIGURE, 1); 1270 if (rc) { 1271 dev_warn(&card->gdev->dev, 1272 "Setting up broadcast filtering for %s failed\n", 1273 QETH_CARD_IFNAME(card)); 1274 goto out; 1275 } 1276 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; 1277 dev_info(&card->gdev->dev, "Broadcast enabled\n"); 1278 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 1279 IPA_CMD_ASS_ENABLE, 1); 1280 if (rc) { 1281 dev_warn(&card->gdev->dev, "Setting up broadcast echo " 1282 "filtering for %s failed\n", QETH_CARD_IFNAME(card)); 1283 goto out; 1284 } 1285 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; 1286 out: 1287 if (card->info.broadcast_capable) 1288 card->dev->flags |= IFF_BROADCAST; 1289 else 1290 card->dev->flags &= ~IFF_BROADCAST; 1291 return rc; 1292 } 1293 1294 static void qeth_l3_start_ipa_checksum(struct qeth_card *card) 1295 { 1296 QETH_CARD_TEXT(card, 3, "strtcsum"); 1297 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) 1298 && (card->dev->features & NETIF_F_RXCSUM)) 1299 qeth_set_rx_csum(card, 1); 1300 } 1301 1302 static void qeth_l3_start_ipa_tx_checksum(struct qeth_card *card) 1303 { 1304 QETH_CARD_TEXT(card, 3, "strttxcs"); 1305 qeth_start_ipa_tx_checksum(card); 1306 } 1307 1308 static int qeth_l3_start_ipa_tso(struct qeth_card *card) 1309 { 1310 int rc; 1311 1312 QETH_CARD_TEXT(card, 3, "sttso"); 1313 1314 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 1315 dev_info(&card->gdev->dev, 1316 "Outbound TSO not supported on %s\n", 1317 QETH_CARD_IFNAME(card)); 1318 rc = -EOPNOTSUPP; 1319 } else { 1320 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO, 1321 IPA_CMD_ASS_START, 0); 1322 if (rc) 1323 dev_warn(&card->gdev->dev, "Starting outbound TCP " 1324 "segmentation offload for %s failed\n", 1325 QETH_CARD_IFNAME(card)); 1326 else 1327 dev_info(&card->gdev->dev, 1328 "Outbound TSO enabled\n"); 1329 } 1330 if (rc) 1331 card->dev->features &= ~NETIF_F_TSO; 1332 return rc; 1333 } 1334 1335 static int qeth_l3_start_ipassists(struct qeth_card *card) 1336 { 1337 QETH_CARD_TEXT(card, 3, "strtipas"); 1338 1339 if (qeth_set_access_ctrl_online(card, 0)) 1340 return -EIO; 1341 qeth_l3_start_ipa_arp_processing(card); /* go on*/ 1342 qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/ 1343 qeth_l3_start_ipa_source_mac(card); /* go on*/ 1344 qeth_l3_start_ipa_vlan(card); /* go on*/ 1345 qeth_l3_start_ipa_multicast(card); /* go on*/ 1346 qeth_l3_start_ipa_ipv6(card); /* go on*/ 1347 qeth_l3_start_ipa_broadcast(card); /* go on*/ 1348 qeth_l3_start_ipa_checksum(card); /* go on*/ 1349 qeth_l3_start_ipa_tx_checksum(card); 1350 qeth_l3_start_ipa_tso(card); /* go on*/ 1351 return 0; 1352 } 1353 1354 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, 1355 struct qeth_reply *reply, unsigned long data) 1356 { 1357 struct qeth_ipa_cmd *cmd; 1358 1359 cmd = (struct qeth_ipa_cmd *) data; 1360 if (cmd->hdr.return_code == 0) 1361 memcpy(card->dev->dev_addr, 1362 cmd->data.create_destroy_addr.unique_id, ETH_ALEN); 1363 else 1364 eth_random_addr(card->dev->dev_addr); 1365 1366 return 0; 1367 } 1368 1369 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) 1370 { 1371 int rc = 0; 1372 struct qeth_cmd_buffer *iob; 1373 struct qeth_ipa_cmd *cmd; 1374 1375 QETH_DBF_TEXT(SETUP, 2, "hsrmac"); 1376 1377 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 1378 QETH_PROT_IPV6); 1379 if (!iob) 1380 return -ENOMEM; 1381 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1382 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 1383 card->info.unique_id; 1384 1385 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, 1386 NULL); 1387 return rc; 1388 } 1389 1390 static int qeth_l3_get_unique_id_cb(struct qeth_card *card, 1391 struct qeth_reply *reply, unsigned long data) 1392 { 1393 struct qeth_ipa_cmd *cmd; 1394 1395 cmd = (struct qeth_ipa_cmd *) data; 1396 if (cmd->hdr.return_code == 0) 1397 card->info.unique_id = *((__u16 *) 1398 &cmd->data.create_destroy_addr.unique_id[6]); 1399 else { 1400 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1401 UNIQUE_ID_NOT_BY_CARD; 1402 dev_warn(&card->gdev->dev, "The network adapter failed to " 1403 "generate a unique ID\n"); 1404 } 1405 return 0; 1406 } 1407 1408 static int qeth_l3_get_unique_id(struct qeth_card *card) 1409 { 1410 int rc = 0; 1411 struct qeth_cmd_buffer *iob; 1412 struct qeth_ipa_cmd *cmd; 1413 1414 QETH_DBF_TEXT(SETUP, 2, "guniqeid"); 1415 1416 if (!qeth_is_supported(card, IPA_IPV6)) { 1417 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1418 UNIQUE_ID_NOT_BY_CARD; 1419 return 0; 1420 } 1421 1422 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 1423 QETH_PROT_IPV6); 1424 if (!iob) 1425 return -ENOMEM; 1426 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1427 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 1428 card->info.unique_id; 1429 1430 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL); 1431 return rc; 1432 } 1433 1434 static int 1435 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, 1436 unsigned long data) 1437 { 1438 struct qeth_ipa_cmd *cmd; 1439 __u16 rc; 1440 1441 QETH_DBF_TEXT(SETUP, 2, "diastrcb"); 1442 1443 cmd = (struct qeth_ipa_cmd *)data; 1444 rc = cmd->hdr.return_code; 1445 if (rc) 1446 QETH_CARD_TEXT_(card, 2, "dxter%x", rc); 1447 switch (cmd->data.diagass.action) { 1448 case QETH_DIAGS_CMD_TRACE_QUERY: 1449 break; 1450 case QETH_DIAGS_CMD_TRACE_DISABLE: 1451 switch (rc) { 1452 case 0: 1453 case IPA_RC_INVALID_SUBCMD: 1454 card->info.promisc_mode = SET_PROMISC_MODE_OFF; 1455 dev_info(&card->gdev->dev, "The HiperSockets network " 1456 "traffic analyzer is deactivated\n"); 1457 break; 1458 default: 1459 break; 1460 } 1461 break; 1462 case QETH_DIAGS_CMD_TRACE_ENABLE: 1463 switch (rc) { 1464 case 0: 1465 card->info.promisc_mode = SET_PROMISC_MODE_ON; 1466 dev_info(&card->gdev->dev, "The HiperSockets network " 1467 "traffic analyzer is activated\n"); 1468 break; 1469 case IPA_RC_HARDWARE_AUTH_ERROR: 1470 dev_warn(&card->gdev->dev, "The device is not " 1471 "authorized to run as a HiperSockets network " 1472 "traffic analyzer\n"); 1473 break; 1474 case IPA_RC_TRACE_ALREADY_ACTIVE: 1475 dev_warn(&card->gdev->dev, "A HiperSockets " 1476 "network traffic analyzer is already " 1477 "active in the HiperSockets LAN\n"); 1478 break; 1479 default: 1480 break; 1481 } 1482 break; 1483 default: 1484 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n", 1485 cmd->data.diagass.action, QETH_CARD_IFNAME(card)); 1486 } 1487 1488 return 0; 1489 } 1490 1491 static int 1492 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) 1493 { 1494 struct qeth_cmd_buffer *iob; 1495 struct qeth_ipa_cmd *cmd; 1496 1497 QETH_DBF_TEXT(SETUP, 2, "diagtrac"); 1498 1499 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 1500 if (!iob) 1501 return -ENOMEM; 1502 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1503 cmd->data.diagass.subcmd_len = 16; 1504 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE; 1505 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; 1506 cmd->data.diagass.action = diags_cmd; 1507 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL); 1508 } 1509 1510 static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac, 1511 struct net_device *dev) 1512 { 1513 ip_eth_mc_map(ipm, mac); 1514 } 1515 1516 static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev) 1517 { 1518 struct qeth_ipaddr *ipm; 1519 struct ip_mc_list *im4; 1520 char buf[MAX_ADDR_LEN]; 1521 1522 QETH_CARD_TEXT(card, 4, "addmc"); 1523 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL; 1524 im4 = rcu_dereference(im4->next_rcu)) { 1525 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev); 1526 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1527 if (!ipm) 1528 continue; 1529 ipm->u.a4.addr = im4->multiaddr; 1530 memcpy(ipm->mac, buf, OSA_ADDR_LEN); 1531 ipm->is_multicast = 1; 1532 if (!qeth_l3_add_ip(card, ipm)) 1533 kfree(ipm); 1534 } 1535 } 1536 1537 /* called with rcu_read_lock */ 1538 static void qeth_l3_add_vlan_mc(struct qeth_card *card) 1539 { 1540 struct in_device *in_dev; 1541 u16 vid; 1542 1543 QETH_CARD_TEXT(card, 4, "addmcvl"); 1544 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1545 return; 1546 1547 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1548 struct net_device *netdev; 1549 1550 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1551 vid); 1552 if (netdev == NULL || 1553 !(netdev->flags & IFF_UP)) 1554 continue; 1555 in_dev = __in_dev_get_rcu(netdev); 1556 if (!in_dev) 1557 continue; 1558 qeth_l3_add_mc(card, in_dev); 1559 } 1560 } 1561 1562 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card) 1563 { 1564 struct in_device *in4_dev; 1565 1566 QETH_CARD_TEXT(card, 4, "chkmcv4"); 1567 rcu_read_lock(); 1568 in4_dev = __in_dev_get_rcu(card->dev); 1569 if (in4_dev == NULL) 1570 goto unlock; 1571 qeth_l3_add_mc(card, in4_dev); 1572 qeth_l3_add_vlan_mc(card); 1573 unlock: 1574 rcu_read_unlock(); 1575 } 1576 1577 #ifdef CONFIG_QETH_IPV6 1578 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev) 1579 { 1580 struct qeth_ipaddr *ipm; 1581 struct ifmcaddr6 *im6; 1582 char buf[MAX_ADDR_LEN]; 1583 1584 QETH_CARD_TEXT(card, 4, "addmc6"); 1585 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { 1586 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0); 1587 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1588 if (!ipm) 1589 continue; 1590 ipm->is_multicast = 1; 1591 memcpy(ipm->mac, buf, OSA_ADDR_LEN); 1592 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr, 1593 sizeof(struct in6_addr)); 1594 if (!qeth_l3_add_ip(card, ipm)) 1595 kfree(ipm); 1596 } 1597 } 1598 1599 /* called with rcu_read_lock */ 1600 static void qeth_l3_add_vlan_mc6(struct qeth_card *card) 1601 { 1602 struct inet6_dev *in_dev; 1603 u16 vid; 1604 1605 QETH_CARD_TEXT(card, 4, "admc6vl"); 1606 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1607 return; 1608 1609 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1610 struct net_device *netdev; 1611 1612 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1613 vid); 1614 if (netdev == NULL || 1615 !(netdev->flags & IFF_UP)) 1616 continue; 1617 in_dev = in6_dev_get(netdev); 1618 if (!in_dev) 1619 continue; 1620 read_lock_bh(&in_dev->lock); 1621 qeth_l3_add_mc6(card, in_dev); 1622 read_unlock_bh(&in_dev->lock); 1623 in6_dev_put(in_dev); 1624 } 1625 } 1626 1627 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card) 1628 { 1629 struct inet6_dev *in6_dev; 1630 1631 QETH_CARD_TEXT(card, 4, "chkmcv6"); 1632 if (!qeth_is_supported(card, IPA_IPV6)) 1633 return ; 1634 in6_dev = in6_dev_get(card->dev); 1635 if (in6_dev == NULL) 1636 return; 1637 rcu_read_lock(); 1638 read_lock_bh(&in6_dev->lock); 1639 qeth_l3_add_mc6(card, in6_dev); 1640 qeth_l3_add_vlan_mc6(card); 1641 read_unlock_bh(&in6_dev->lock); 1642 rcu_read_unlock(); 1643 in6_dev_put(in6_dev); 1644 } 1645 #endif /* CONFIG_QETH_IPV6 */ 1646 1647 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card, 1648 unsigned short vid) 1649 { 1650 struct in_device *in_dev; 1651 struct in_ifaddr *ifa; 1652 struct qeth_ipaddr *addr; 1653 struct net_device *netdev; 1654 1655 QETH_CARD_TEXT(card, 4, "frvaddr4"); 1656 1657 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid); 1658 if (!netdev) 1659 return; 1660 in_dev = in_dev_get(netdev); 1661 if (!in_dev) 1662 return; 1663 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) { 1664 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1665 if (addr) { 1666 addr->u.a4.addr = ifa->ifa_address; 1667 addr->u.a4.mask = ifa->ifa_mask; 1668 addr->type = QETH_IP_TYPE_NORMAL; 1669 if (!qeth_l3_delete_ip(card, addr)) 1670 kfree(addr); 1671 } 1672 } 1673 in_dev_put(in_dev); 1674 } 1675 1676 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card, 1677 unsigned short vid) 1678 { 1679 #ifdef CONFIG_QETH_IPV6 1680 struct inet6_dev *in6_dev; 1681 struct inet6_ifaddr *ifa; 1682 struct qeth_ipaddr *addr; 1683 struct net_device *netdev; 1684 1685 QETH_CARD_TEXT(card, 4, "frvaddr6"); 1686 1687 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid); 1688 if (!netdev) 1689 return; 1690 in6_dev = in6_dev_get(netdev); 1691 if (!in6_dev) 1692 return; 1693 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) { 1694 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1695 if (addr) { 1696 memcpy(&addr->u.a6.addr, &ifa->addr, 1697 sizeof(struct in6_addr)); 1698 addr->u.a6.pfxlen = ifa->prefix_len; 1699 addr->type = QETH_IP_TYPE_NORMAL; 1700 if (!qeth_l3_delete_ip(card, addr)) 1701 kfree(addr); 1702 } 1703 } 1704 in6_dev_put(in6_dev); 1705 #endif /* CONFIG_QETH_IPV6 */ 1706 } 1707 1708 static void qeth_l3_free_vlan_addresses(struct qeth_card *card, 1709 unsigned short vid) 1710 { 1711 rcu_read_lock(); 1712 qeth_l3_free_vlan_addresses4(card, vid); 1713 qeth_l3_free_vlan_addresses6(card, vid); 1714 rcu_read_unlock(); 1715 } 1716 1717 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, 1718 __be16 proto, u16 vid) 1719 { 1720 struct qeth_card *card = dev->ml_priv; 1721 1722 set_bit(vid, card->active_vlans); 1723 return 0; 1724 } 1725 1726 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, 1727 __be16 proto, u16 vid) 1728 { 1729 struct qeth_card *card = dev->ml_priv; 1730 unsigned long flags; 1731 1732 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 1733 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 1734 QETH_CARD_TEXT(card, 3, "kidREC"); 1735 return 0; 1736 } 1737 spin_lock_irqsave(&card->vlanlock, flags); 1738 /* unregister IP addresses of vlan device */ 1739 qeth_l3_free_vlan_addresses(card, vid); 1740 clear_bit(vid, card->active_vlans); 1741 spin_unlock_irqrestore(&card->vlanlock, flags); 1742 qeth_l3_set_multicast_list(card->dev); 1743 return 0; 1744 } 1745 1746 static inline int qeth_l3_rebuild_skb(struct qeth_card *card, 1747 struct sk_buff *skb, struct qeth_hdr *hdr, 1748 unsigned short *vlan_id) 1749 { 1750 __be16 prot; 1751 struct iphdr *ip_hdr; 1752 unsigned char tg_addr[MAX_ADDR_LEN]; 1753 int is_vlan = 0; 1754 1755 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) { 1756 prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 : 1757 ETH_P_IP); 1758 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) { 1759 case QETH_CAST_MULTICAST: 1760 switch (prot) { 1761 #ifdef CONFIG_QETH_IPV6 1762 case __constant_htons(ETH_P_IPV6): 1763 ndisc_mc_map((struct in6_addr *) 1764 skb->data + 24, 1765 tg_addr, card->dev, 0); 1766 break; 1767 #endif 1768 case __constant_htons(ETH_P_IP): 1769 ip_hdr = (struct iphdr *)skb->data; 1770 ip_eth_mc_map(ip_hdr->daddr, tg_addr); 1771 break; 1772 default: 1773 memcpy(tg_addr, card->dev->broadcast, 1774 card->dev->addr_len); 1775 } 1776 card->stats.multicast++; 1777 skb->pkt_type = PACKET_MULTICAST; 1778 break; 1779 case QETH_CAST_BROADCAST: 1780 memcpy(tg_addr, card->dev->broadcast, 1781 card->dev->addr_len); 1782 card->stats.multicast++; 1783 skb->pkt_type = PACKET_BROADCAST; 1784 break; 1785 case QETH_CAST_UNICAST: 1786 case QETH_CAST_ANYCAST: 1787 case QETH_CAST_NOCAST: 1788 default: 1789 if (card->options.sniffer) 1790 skb->pkt_type = PACKET_OTHERHOST; 1791 else 1792 skb->pkt_type = PACKET_HOST; 1793 memcpy(tg_addr, card->dev->dev_addr, 1794 card->dev->addr_len); 1795 } 1796 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR) 1797 card->dev->header_ops->create(skb, card->dev, prot, 1798 tg_addr, &hdr->hdr.l3.dest_addr[2], 1799 card->dev->addr_len); 1800 else 1801 card->dev->header_ops->create(skb, card->dev, prot, 1802 tg_addr, "FAKELL", card->dev->addr_len); 1803 } 1804 1805 skb->protocol = eth_type_trans(skb, card->dev); 1806 1807 if (hdr->hdr.l3.ext_flags & 1808 (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) { 1809 *vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ? 1810 hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]); 1811 is_vlan = 1; 1812 } 1813 1814 if (card->dev->features & NETIF_F_RXCSUM) { 1815 if ((hdr->hdr.l3.ext_flags & 1816 (QETH_HDR_EXT_CSUM_HDR_REQ | 1817 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 1818 (QETH_HDR_EXT_CSUM_HDR_REQ | 1819 QETH_HDR_EXT_CSUM_TRANSP_REQ)) 1820 skb->ip_summed = CHECKSUM_UNNECESSARY; 1821 else 1822 skb->ip_summed = CHECKSUM_NONE; 1823 } else 1824 skb->ip_summed = CHECKSUM_NONE; 1825 return is_vlan; 1826 } 1827 1828 static int qeth_l3_process_inbound_buffer(struct qeth_card *card, 1829 int budget, int *done) 1830 { 1831 int work_done = 0; 1832 struct sk_buff *skb; 1833 struct qeth_hdr *hdr; 1834 __u16 vlan_tag = 0; 1835 int is_vlan; 1836 unsigned int len; 1837 __u16 magic; 1838 1839 *done = 0; 1840 WARN_ON_ONCE(!budget); 1841 while (budget) { 1842 skb = qeth_core_get_next_skb(card, 1843 &card->qdio.in_q->bufs[card->rx.b_index], 1844 &card->rx.b_element, &card->rx.e_offset, &hdr); 1845 if (!skb) { 1846 *done = 1; 1847 break; 1848 } 1849 skb->dev = card->dev; 1850 switch (hdr->hdr.l3.id) { 1851 case QETH_HEADER_TYPE_LAYER3: 1852 magic = *(__u16 *)skb->data; 1853 if ((card->info.type == QETH_CARD_TYPE_IQD) && 1854 (magic == ETH_P_AF_IUCV)) { 1855 skb->protocol = ETH_P_AF_IUCV; 1856 skb->pkt_type = PACKET_HOST; 1857 skb->mac_header = NET_SKB_PAD; 1858 skb->dev = card->dev; 1859 len = skb->len; 1860 card->dev->header_ops->create(skb, card->dev, 0, 1861 card->dev->dev_addr, "FAKELL", 1862 card->dev->addr_len); 1863 netif_receive_skb(skb); 1864 } else { 1865 is_vlan = qeth_l3_rebuild_skb(card, skb, hdr, 1866 &vlan_tag); 1867 len = skb->len; 1868 if (is_vlan && !card->options.sniffer) 1869 __vlan_hwaccel_put_tag(skb, 1870 htons(ETH_P_8021Q), vlan_tag); 1871 napi_gro_receive(&card->napi, skb); 1872 } 1873 break; 1874 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */ 1875 skb->pkt_type = PACKET_HOST; 1876 skb->protocol = eth_type_trans(skb, skb->dev); 1877 len = skb->len; 1878 netif_receive_skb(skb); 1879 break; 1880 default: 1881 dev_kfree_skb_any(skb); 1882 QETH_CARD_TEXT(card, 3, "inbunkno"); 1883 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 1884 continue; 1885 } 1886 work_done++; 1887 budget--; 1888 card->stats.rx_packets++; 1889 card->stats.rx_bytes += len; 1890 } 1891 return work_done; 1892 } 1893 1894 static int qeth_l3_poll(struct napi_struct *napi, int budget) 1895 { 1896 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 1897 int work_done = 0; 1898 struct qeth_qdio_buffer *buffer; 1899 int done; 1900 int new_budget = budget; 1901 1902 if (card->options.performance_stats) { 1903 card->perf_stats.inbound_cnt++; 1904 card->perf_stats.inbound_start_time = qeth_get_micros(); 1905 } 1906 1907 while (1) { 1908 if (!card->rx.b_count) { 1909 card->rx.qdio_err = 0; 1910 card->rx.b_count = qdio_get_next_buffers( 1911 card->data.ccwdev, 0, &card->rx.b_index, 1912 &card->rx.qdio_err); 1913 if (card->rx.b_count <= 0) { 1914 card->rx.b_count = 0; 1915 break; 1916 } 1917 card->rx.b_element = 1918 &card->qdio.in_q->bufs[card->rx.b_index] 1919 .buffer->element[0]; 1920 card->rx.e_offset = 0; 1921 } 1922 1923 while (card->rx.b_count) { 1924 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 1925 if (!(card->rx.qdio_err && 1926 qeth_check_qdio_errors(card, buffer->buffer, 1927 card->rx.qdio_err, "qinerr"))) 1928 work_done += qeth_l3_process_inbound_buffer( 1929 card, new_budget, &done); 1930 else 1931 done = 1; 1932 1933 if (done) { 1934 if (card->options.performance_stats) 1935 card->perf_stats.bufs_rec++; 1936 qeth_put_buffer_pool_entry(card, 1937 buffer->pool_entry); 1938 qeth_queue_input_buffer(card, card->rx.b_index); 1939 card->rx.b_count--; 1940 if (card->rx.b_count) { 1941 card->rx.b_index = 1942 (card->rx.b_index + 1) % 1943 QDIO_MAX_BUFFERS_PER_Q; 1944 card->rx.b_element = 1945 &card->qdio.in_q 1946 ->bufs[card->rx.b_index] 1947 .buffer->element[0]; 1948 card->rx.e_offset = 0; 1949 } 1950 } 1951 1952 if (work_done >= budget) 1953 goto out; 1954 else 1955 new_budget = budget - work_done; 1956 } 1957 } 1958 1959 napi_complete(napi); 1960 if (qdio_start_irq(card->data.ccwdev, 0)) 1961 napi_schedule(&card->napi); 1962 out: 1963 if (card->options.performance_stats) 1964 card->perf_stats.inbound_time += qeth_get_micros() - 1965 card->perf_stats.inbound_start_time; 1966 return work_done; 1967 } 1968 1969 static int qeth_l3_verify_vlan_dev(struct net_device *dev, 1970 struct qeth_card *card) 1971 { 1972 int rc = 0; 1973 u16 vid; 1974 1975 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1976 struct net_device *netdev; 1977 1978 rcu_read_lock(); 1979 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1980 vid); 1981 rcu_read_unlock(); 1982 if (netdev == dev) { 1983 rc = QETH_VLAN_CARD; 1984 break; 1985 } 1986 } 1987 1988 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card)) 1989 return 0; 1990 1991 return rc; 1992 } 1993 1994 static int qeth_l3_verify_dev(struct net_device *dev) 1995 { 1996 struct qeth_card *card; 1997 unsigned long flags; 1998 int rc = 0; 1999 2000 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 2001 list_for_each_entry(card, &qeth_core_card_list.list, list) { 2002 if (card->dev == dev) { 2003 rc = QETH_REAL_CARD; 2004 break; 2005 } 2006 rc = qeth_l3_verify_vlan_dev(dev, card); 2007 if (rc) 2008 break; 2009 } 2010 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 2011 2012 return rc; 2013 } 2014 2015 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) 2016 { 2017 struct qeth_card *card = NULL; 2018 int rc; 2019 2020 rc = qeth_l3_verify_dev(dev); 2021 if (rc == QETH_REAL_CARD) 2022 card = dev->ml_priv; 2023 else if (rc == QETH_VLAN_CARD) 2024 card = vlan_dev_real_dev(dev)->ml_priv; 2025 if (card && card->options.layer2) 2026 card = NULL; 2027 if (card) 2028 QETH_CARD_TEXT_(card, 4, "%d", rc); 2029 return card ; 2030 } 2031 2032 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode) 2033 { 2034 QETH_DBF_TEXT(SETUP, 2, "stopcard"); 2035 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 2036 2037 qeth_set_allowed_threads(card, 0, 1); 2038 if (card->options.sniffer && 2039 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) 2040 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 2041 if (card->read.state == CH_STATE_UP && 2042 card->write.state == CH_STATE_UP && 2043 (card->state == CARD_STATE_UP)) { 2044 if (recovery_mode) 2045 qeth_l3_stop(card->dev); 2046 else { 2047 rtnl_lock(); 2048 dev_close(card->dev); 2049 rtnl_unlock(); 2050 } 2051 card->state = CARD_STATE_SOFTSETUP; 2052 } 2053 if (card->state == CARD_STATE_SOFTSETUP) { 2054 qeth_l3_clear_ip_list(card, 1); 2055 qeth_clear_ipacmd_list(card); 2056 card->state = CARD_STATE_HARDSETUP; 2057 } 2058 if (card->state == CARD_STATE_HARDSETUP) { 2059 qeth_qdio_clear_card(card, 0); 2060 qeth_clear_qdio_buffers(card); 2061 qeth_clear_working_pool_list(card); 2062 card->state = CARD_STATE_DOWN; 2063 } 2064 if (card->state == CARD_STATE_DOWN) { 2065 qeth_clear_cmd_buffers(&card->read); 2066 qeth_clear_cmd_buffers(&card->write); 2067 } 2068 } 2069 2070 /* 2071 * test for and Switch promiscuous mode (on or off) 2072 * either for guestlan or HiperSocket Sniffer 2073 */ 2074 static void 2075 qeth_l3_handle_promisc_mode(struct qeth_card *card) 2076 { 2077 struct net_device *dev = card->dev; 2078 2079 if (((dev->flags & IFF_PROMISC) && 2080 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 2081 (!(dev->flags & IFF_PROMISC) && 2082 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 2083 return; 2084 2085 if (card->info.guestlan) { /* Guestlan trace */ 2086 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 2087 qeth_setadp_promisc_mode(card); 2088 } else if (card->options.sniffer && /* HiperSockets trace */ 2089 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 2090 if (dev->flags & IFF_PROMISC) { 2091 QETH_CARD_TEXT(card, 3, "+promisc"); 2092 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE); 2093 } else { 2094 QETH_CARD_TEXT(card, 3, "-promisc"); 2095 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 2096 } 2097 } 2098 } 2099 2100 static void qeth_l3_set_multicast_list(struct net_device *dev) 2101 { 2102 struct qeth_card *card = dev->ml_priv; 2103 2104 QETH_CARD_TEXT(card, 3, "setmulti"); 2105 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 2106 (card->state != CARD_STATE_UP)) 2107 return; 2108 if (!card->options.sniffer) { 2109 qeth_l3_delete_mc_addresses(card); 2110 qeth_l3_add_multicast_ipv4(card); 2111 #ifdef CONFIG_QETH_IPV6 2112 qeth_l3_add_multicast_ipv6(card); 2113 #endif 2114 qeth_l3_set_ip_addr_list(card); 2115 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 2116 return; 2117 } 2118 qeth_l3_handle_promisc_mode(card); 2119 } 2120 2121 static const char *qeth_l3_arp_get_error_cause(int *rc) 2122 { 2123 switch (*rc) { 2124 case QETH_IPA_ARP_RC_FAILED: 2125 *rc = -EIO; 2126 return "operation failed"; 2127 case QETH_IPA_ARP_RC_NOTSUPP: 2128 *rc = -EOPNOTSUPP; 2129 return "operation not supported"; 2130 case QETH_IPA_ARP_RC_OUT_OF_RANGE: 2131 *rc = -EINVAL; 2132 return "argument out of range"; 2133 case QETH_IPA_ARP_RC_Q_NOTSUPP: 2134 *rc = -EOPNOTSUPP; 2135 return "query operation not supported"; 2136 case QETH_IPA_ARP_RC_Q_NO_DATA: 2137 *rc = -ENOENT; 2138 return "no query data available"; 2139 default: 2140 return "unknown error"; 2141 } 2142 } 2143 2144 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) 2145 { 2146 int tmp; 2147 int rc; 2148 2149 QETH_CARD_TEXT(card, 3, "arpstnoe"); 2150 2151 /* 2152 * currently GuestLAN only supports the ARP assist function 2153 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; 2154 * thus we say EOPNOTSUPP for this ARP function 2155 */ 2156 if (card->info.guestlan) 2157 return -EOPNOTSUPP; 2158 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2159 return -EOPNOTSUPP; 2160 } 2161 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 2162 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 2163 no_entries); 2164 if (rc) { 2165 tmp = rc; 2166 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on " 2167 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card), 2168 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2169 } 2170 return rc; 2171 } 2172 2173 static __u32 get_arp_entry_size(struct qeth_card *card, 2174 struct qeth_arp_query_data *qdata, 2175 struct qeth_arp_entrytype *type, __u8 strip_entries) 2176 { 2177 __u32 rc; 2178 __u8 is_hsi; 2179 2180 is_hsi = qdata->reply_bits == 5; 2181 if (type->ip == QETHARP_IP_ADDR_V4) { 2182 QETH_CARD_TEXT(card, 4, "arpev4"); 2183 if (strip_entries) { 2184 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : 2185 sizeof(struct qeth_arp_qi_entry7_short); 2186 } else { 2187 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : 2188 sizeof(struct qeth_arp_qi_entry7); 2189 } 2190 } else if (type->ip == QETHARP_IP_ADDR_V6) { 2191 QETH_CARD_TEXT(card, 4, "arpev6"); 2192 if (strip_entries) { 2193 rc = is_hsi ? 2194 sizeof(struct qeth_arp_qi_entry5_short_ipv6) : 2195 sizeof(struct qeth_arp_qi_entry7_short_ipv6); 2196 } else { 2197 rc = is_hsi ? 2198 sizeof(struct qeth_arp_qi_entry5_ipv6) : 2199 sizeof(struct qeth_arp_qi_entry7_ipv6); 2200 } 2201 } else { 2202 QETH_CARD_TEXT(card, 4, "arpinv"); 2203 rc = 0; 2204 } 2205 2206 return rc; 2207 } 2208 2209 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) 2210 { 2211 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || 2212 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); 2213 } 2214 2215 static int qeth_l3_arp_query_cb(struct qeth_card *card, 2216 struct qeth_reply *reply, unsigned long data) 2217 { 2218 struct qeth_ipa_cmd *cmd; 2219 struct qeth_arp_query_data *qdata; 2220 struct qeth_arp_query_info *qinfo; 2221 int i; 2222 int e; 2223 int entrybytes_done; 2224 int stripped_bytes; 2225 __u8 do_strip_entries; 2226 2227 QETH_CARD_TEXT(card, 3, "arpquecb"); 2228 2229 qinfo = (struct qeth_arp_query_info *) reply->param; 2230 cmd = (struct qeth_ipa_cmd *) data; 2231 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version); 2232 if (cmd->hdr.return_code) { 2233 QETH_CARD_TEXT(card, 4, "arpcberr"); 2234 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 2235 return 0; 2236 } 2237 if (cmd->data.setassparms.hdr.return_code) { 2238 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 2239 QETH_CARD_TEXT(card, 4, "setaperr"); 2240 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 2241 return 0; 2242 } 2243 qdata = &cmd->data.setassparms.data.query_arp; 2244 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries); 2245 2246 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; 2247 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; 2248 entrybytes_done = 0; 2249 for (e = 0; e < qdata->no_entries; ++e) { 2250 char *cur_entry; 2251 __u32 esize; 2252 struct qeth_arp_entrytype *etype; 2253 2254 cur_entry = &qdata->data + entrybytes_done; 2255 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; 2256 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) { 2257 QETH_CARD_TEXT(card, 4, "pmis"); 2258 QETH_CARD_TEXT_(card, 4, "%i", etype->ip); 2259 break; 2260 } 2261 esize = get_arp_entry_size(card, qdata, etype, 2262 do_strip_entries); 2263 QETH_CARD_TEXT_(card, 5, "esz%i", esize); 2264 if (!esize) 2265 break; 2266 2267 if ((qinfo->udata_len - qinfo->udata_offset) < esize) { 2268 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM); 2269 cmd->hdr.return_code = IPA_RC_ENOMEM; 2270 goto out_error; 2271 } 2272 2273 memcpy(qinfo->udata + qinfo->udata_offset, 2274 &qdata->data + entrybytes_done + stripped_bytes, 2275 esize); 2276 entrybytes_done += esize + stripped_bytes; 2277 qinfo->udata_offset += esize; 2278 ++qinfo->no_entries; 2279 } 2280 /* check if all replies received ... */ 2281 if (cmd->data.setassparms.hdr.seq_no < 2282 cmd->data.setassparms.hdr.number_of_replies) 2283 return 1; 2284 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries); 2285 memcpy(qinfo->udata, &qinfo->no_entries, 4); 2286 /* keep STRIP_ENTRIES flag so the user program can distinguish 2287 * stripped entries from normal ones */ 2288 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) 2289 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; 2290 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); 2291 QETH_CARD_TEXT_(card, 4, "rc%i", 0); 2292 return 0; 2293 out_error: 2294 i = 0; 2295 memcpy(qinfo->udata, &i, 4); 2296 return 0; 2297 } 2298 2299 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card, 2300 struct qeth_cmd_buffer *iob, int len, 2301 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 2302 unsigned long), 2303 void *reply_param) 2304 { 2305 QETH_CARD_TEXT(card, 4, "sendarp"); 2306 2307 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2308 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2309 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2310 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 2311 reply_cb, reply_param); 2312 } 2313 2314 static int qeth_l3_query_arp_cache_info(struct qeth_card *card, 2315 enum qeth_prot_versions prot, 2316 struct qeth_arp_query_info *qinfo) 2317 { 2318 struct qeth_cmd_buffer *iob; 2319 struct qeth_ipa_cmd *cmd; 2320 int tmp; 2321 int rc; 2322 2323 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); 2324 2325 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 2326 IPA_CMD_ASS_ARP_QUERY_INFO, 2327 sizeof(struct qeth_arp_query_data) 2328 - sizeof(char), 2329 prot); 2330 if (!iob) 2331 return -ENOMEM; 2332 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2333 cmd->data.setassparms.data.query_arp.request_bits = 0x000F; 2334 cmd->data.setassparms.data.query_arp.reply_bits = 0; 2335 cmd->data.setassparms.data.query_arp.no_entries = 0; 2336 rc = qeth_l3_send_ipa_arp_cmd(card, iob, 2337 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN, 2338 qeth_l3_arp_query_cb, (void *)qinfo); 2339 if (rc) { 2340 tmp = rc; 2341 QETH_DBF_MESSAGE(2, 2342 "Error while querying ARP cache on %s: %s " 2343 "(0x%x/%d)\n", QETH_CARD_IFNAME(card), 2344 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2345 } 2346 2347 return rc; 2348 } 2349 2350 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) 2351 { 2352 struct qeth_arp_query_info qinfo = {0, }; 2353 int rc; 2354 2355 QETH_CARD_TEXT(card, 3, "arpquery"); 2356 2357 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ 2358 IPA_ARP_PROCESSING)) { 2359 QETH_CARD_TEXT(card, 3, "arpqnsup"); 2360 rc = -EOPNOTSUPP; 2361 goto out; 2362 } 2363 /* get size of userspace buffer and mask_bits -> 6 bytes */ 2364 if (copy_from_user(&qinfo, udata, 6)) { 2365 rc = -EFAULT; 2366 goto out; 2367 } 2368 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 2369 if (!qinfo.udata) { 2370 rc = -ENOMEM; 2371 goto out; 2372 } 2373 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; 2374 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo); 2375 if (rc) { 2376 if (copy_to_user(udata, qinfo.udata, 4)) 2377 rc = -EFAULT; 2378 goto free_and_out; 2379 } else { 2380 #ifdef CONFIG_QETH_IPV6 2381 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { 2382 /* fails in case of GuestLAN QDIO mode */ 2383 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, 2384 &qinfo); 2385 } 2386 #endif 2387 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) { 2388 QETH_CARD_TEXT(card, 4, "qactf"); 2389 rc = -EFAULT; 2390 goto free_and_out; 2391 } 2392 QETH_CARD_TEXT(card, 4, "qacts"); 2393 } 2394 free_and_out: 2395 kfree(qinfo.udata); 2396 out: 2397 return rc; 2398 } 2399 2400 static int qeth_l3_arp_add_entry(struct qeth_card *card, 2401 struct qeth_arp_cache_entry *entry) 2402 { 2403 struct qeth_cmd_buffer *iob; 2404 char buf[16]; 2405 int tmp; 2406 int rc; 2407 2408 QETH_CARD_TEXT(card, 3, "arpadent"); 2409 2410 /* 2411 * currently GuestLAN only supports the ARP assist function 2412 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; 2413 * thus we say EOPNOTSUPP for this ARP function 2414 */ 2415 if (card->info.guestlan) 2416 return -EOPNOTSUPP; 2417 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2418 return -EOPNOTSUPP; 2419 } 2420 2421 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 2422 IPA_CMD_ASS_ARP_ADD_ENTRY, 2423 sizeof(struct qeth_arp_cache_entry), 2424 QETH_PROT_IPV4); 2425 if (!iob) 2426 return -ENOMEM; 2427 rc = qeth_send_setassparms(card, iob, 2428 sizeof(struct qeth_arp_cache_entry), 2429 (unsigned long) entry, 2430 qeth_l3_default_setassparms_cb, NULL); 2431 if (rc) { 2432 tmp = rc; 2433 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); 2434 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s " 2435 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), 2436 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2437 } 2438 return rc; 2439 } 2440 2441 static int qeth_l3_arp_remove_entry(struct qeth_card *card, 2442 struct qeth_arp_cache_entry *entry) 2443 { 2444 struct qeth_cmd_buffer *iob; 2445 char buf[16] = {0, }; 2446 int tmp; 2447 int rc; 2448 2449 QETH_CARD_TEXT(card, 3, "arprment"); 2450 2451 /* 2452 * currently GuestLAN only supports the ARP assist function 2453 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY; 2454 * thus we say EOPNOTSUPP for this ARP function 2455 */ 2456 if (card->info.guestlan) 2457 return -EOPNOTSUPP; 2458 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2459 return -EOPNOTSUPP; 2460 } 2461 memcpy(buf, entry, 12); 2462 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 2463 IPA_CMD_ASS_ARP_REMOVE_ENTRY, 2464 12, 2465 QETH_PROT_IPV4); 2466 if (!iob) 2467 return -ENOMEM; 2468 rc = qeth_send_setassparms(card, iob, 2469 12, (unsigned long)buf, 2470 qeth_l3_default_setassparms_cb, NULL); 2471 if (rc) { 2472 tmp = rc; 2473 memset(buf, 0, 16); 2474 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); 2475 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s" 2476 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), 2477 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2478 } 2479 return rc; 2480 } 2481 2482 static int qeth_l3_arp_flush_cache(struct qeth_card *card) 2483 { 2484 int rc; 2485 int tmp; 2486 2487 QETH_CARD_TEXT(card, 3, "arpflush"); 2488 2489 /* 2490 * currently GuestLAN only supports the ARP assist function 2491 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; 2492 * thus we say EOPNOTSUPP for this ARP function 2493 */ 2494 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD)) 2495 return -EOPNOTSUPP; 2496 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2497 return -EOPNOTSUPP; 2498 } 2499 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 2500 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0); 2501 if (rc) { 2502 tmp = rc; 2503 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s " 2504 "(0x%x/%d)\n", QETH_CARD_IFNAME(card), 2505 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2506 } 2507 return rc; 2508 } 2509 2510 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 2511 { 2512 struct qeth_card *card = dev->ml_priv; 2513 struct qeth_arp_cache_entry arp_entry; 2514 struct mii_ioctl_data *mii_data; 2515 int rc = 0; 2516 2517 if (!card) 2518 return -ENODEV; 2519 2520 if (!qeth_card_hw_is_reachable(card)) 2521 return -ENODEV; 2522 2523 switch (cmd) { 2524 case SIOC_QETH_ARP_SET_NO_ENTRIES: 2525 if (!capable(CAP_NET_ADMIN)) { 2526 rc = -EPERM; 2527 break; 2528 } 2529 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); 2530 break; 2531 case SIOC_QETH_ARP_QUERY_INFO: 2532 if (!capable(CAP_NET_ADMIN)) { 2533 rc = -EPERM; 2534 break; 2535 } 2536 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data); 2537 break; 2538 case SIOC_QETH_ARP_ADD_ENTRY: 2539 if (!capable(CAP_NET_ADMIN)) { 2540 rc = -EPERM; 2541 break; 2542 } 2543 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data, 2544 sizeof(struct qeth_arp_cache_entry))) 2545 rc = -EFAULT; 2546 else 2547 rc = qeth_l3_arp_add_entry(card, &arp_entry); 2548 break; 2549 case SIOC_QETH_ARP_REMOVE_ENTRY: 2550 if (!capable(CAP_NET_ADMIN)) { 2551 rc = -EPERM; 2552 break; 2553 } 2554 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data, 2555 sizeof(struct qeth_arp_cache_entry))) 2556 rc = -EFAULT; 2557 else 2558 rc = qeth_l3_arp_remove_entry(card, &arp_entry); 2559 break; 2560 case SIOC_QETH_ARP_FLUSH_CACHE: 2561 if (!capable(CAP_NET_ADMIN)) { 2562 rc = -EPERM; 2563 break; 2564 } 2565 rc = qeth_l3_arp_flush_cache(card); 2566 break; 2567 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 2568 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 2569 break; 2570 case SIOC_QETH_GET_CARD_TYPE: 2571 if ((card->info.type == QETH_CARD_TYPE_OSD || 2572 card->info.type == QETH_CARD_TYPE_OSX) && 2573 !card->info.guestlan) 2574 return 1; 2575 return 0; 2576 break; 2577 case SIOCGMIIPHY: 2578 mii_data = if_mii(rq); 2579 mii_data->phy_id = 0; 2580 break; 2581 case SIOCGMIIREG: 2582 mii_data = if_mii(rq); 2583 if (mii_data->phy_id != 0) 2584 rc = -EINVAL; 2585 else 2586 mii_data->val_out = qeth_mdio_read(dev, 2587 mii_data->phy_id, 2588 mii_data->reg_num); 2589 break; 2590 case SIOC_QETH_QUERY_OAT: 2591 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 2592 break; 2593 default: 2594 rc = -EOPNOTSUPP; 2595 } 2596 if (rc) 2597 QETH_CARD_TEXT_(card, 2, "ioce%d", rc); 2598 return rc; 2599 } 2600 2601 int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 2602 { 2603 int cast_type = RTN_UNSPEC; 2604 struct neighbour *n = NULL; 2605 struct dst_entry *dst; 2606 2607 rcu_read_lock(); 2608 dst = skb_dst(skb); 2609 if (dst) 2610 n = dst_neigh_lookup_skb(dst, skb); 2611 if (n) { 2612 cast_type = n->type; 2613 rcu_read_unlock(); 2614 neigh_release(n); 2615 if ((cast_type == RTN_BROADCAST) || 2616 (cast_type == RTN_MULTICAST) || 2617 (cast_type == RTN_ANYCAST)) 2618 return cast_type; 2619 else 2620 return RTN_UNSPEC; 2621 } 2622 rcu_read_unlock(); 2623 2624 /* try something else */ 2625 if (skb->protocol == ETH_P_IPV6) 2626 return (skb_network_header(skb)[24] == 0xff) ? 2627 RTN_MULTICAST : 0; 2628 else if (skb->protocol == ETH_P_IP) 2629 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ? 2630 RTN_MULTICAST : 0; 2631 /* ... */ 2632 if (!memcmp(skb->data, skb->dev->broadcast, 6)) 2633 return RTN_BROADCAST; 2634 else { 2635 u16 hdr_mac; 2636 2637 hdr_mac = *((u16 *)skb->data); 2638 /* tr multicast? */ 2639 switch (card->info.link_type) { 2640 case QETH_LINK_TYPE_HSTR: 2641 case QETH_LINK_TYPE_LANE_TR: 2642 if ((hdr_mac == QETH_TR_MAC_NC) || 2643 (hdr_mac == QETH_TR_MAC_C)) 2644 return RTN_MULTICAST; 2645 break; 2646 /* eth or so multicast? */ 2647 default: 2648 if ((hdr_mac == QETH_ETH_MAC_V4) || 2649 (hdr_mac == QETH_ETH_MAC_V6)) 2650 return RTN_MULTICAST; 2651 } 2652 } 2653 return cast_type; 2654 } 2655 2656 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card, 2657 struct qeth_hdr *hdr, struct sk_buff *skb) 2658 { 2659 char daddr[16]; 2660 struct af_iucv_trans_hdr *iucv_hdr; 2661 2662 skb_pull(skb, 14); 2663 card->dev->header_ops->create(skb, card->dev, 0, 2664 card->dev->dev_addr, card->dev->dev_addr, 2665 card->dev->addr_len); 2666 skb_pull(skb, 14); 2667 iucv_hdr = (struct af_iucv_trans_hdr *)skb->data; 2668 memset(hdr, 0, sizeof(struct qeth_hdr)); 2669 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 2670 hdr->hdr.l3.ext_flags = 0; 2671 hdr->hdr.l3.length = skb->len; 2672 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST; 2673 memset(daddr, 0, sizeof(daddr)); 2674 daddr[0] = 0xfe; 2675 daddr[1] = 0x80; 2676 memcpy(&daddr[8], iucv_hdr->destUserID, 8); 2677 memcpy(hdr->hdr.l3.dest_addr, daddr, 16); 2678 } 2679 2680 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 2681 struct sk_buff *skb, int ipv, int cast_type) 2682 { 2683 struct dst_entry *dst; 2684 2685 memset(hdr, 0, sizeof(struct qeth_hdr)); 2686 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 2687 hdr->hdr.l3.ext_flags = 0; 2688 2689 /* 2690 * before we're going to overwrite this location with next hop ip. 2691 * v6 uses passthrough, v4 sets the tag in the QDIO header. 2692 */ 2693 if (skb_vlan_tag_present(skb)) { 2694 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD)) 2695 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME; 2696 else 2697 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG; 2698 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); 2699 } 2700 2701 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr); 2702 2703 rcu_read_lock(); 2704 dst = skb_dst(skb); 2705 if (ipv == 4) { 2706 struct rtable *rt = (struct rtable *) dst; 2707 __be32 *pkey = &ip_hdr(skb)->daddr; 2708 2709 if (rt->rt_gateway) 2710 pkey = &rt->rt_gateway; 2711 2712 /* IPv4 */ 2713 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type); 2714 memset(hdr->hdr.l3.dest_addr, 0, 12); 2715 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey; 2716 } else if (ipv == 6) { 2717 struct rt6_info *rt = (struct rt6_info *) dst; 2718 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr; 2719 2720 if (!ipv6_addr_any(&rt->rt6i_gateway)) 2721 pkey = &rt->rt6i_gateway; 2722 2723 /* IPv6 */ 2724 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type); 2725 if (card->info.type == QETH_CARD_TYPE_IQD) 2726 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU; 2727 memcpy(hdr->hdr.l3.dest_addr, pkey, 16); 2728 } else { 2729 if (!memcmp(skb->data + sizeof(struct qeth_hdr), 2730 skb->dev->broadcast, 6)) { 2731 /* broadcast? */ 2732 hdr->hdr.l3.flags = QETH_CAST_BROADCAST | 2733 QETH_HDR_PASSTHRU; 2734 } else { 2735 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ? 2736 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU : 2737 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU; 2738 } 2739 } 2740 rcu_read_unlock(); 2741 } 2742 2743 static inline void qeth_l3_hdr_csum(struct qeth_card *card, 2744 struct qeth_hdr *hdr, struct sk_buff *skb) 2745 { 2746 struct iphdr *iph = ip_hdr(skb); 2747 2748 /* tcph->check contains already the pseudo hdr checksum 2749 * so just set the header flags 2750 */ 2751 if (iph->protocol == IPPROTO_UDP) 2752 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP; 2753 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 2754 QETH_HDR_EXT_CSUM_HDR_REQ; 2755 iph->check = 0; 2756 if (card->options.performance_stats) 2757 card->perf_stats.tx_csum++; 2758 } 2759 2760 static void qeth_tso_fill_header(struct qeth_card *card, 2761 struct qeth_hdr *qhdr, struct sk_buff *skb) 2762 { 2763 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr; 2764 struct tcphdr *tcph = tcp_hdr(skb); 2765 struct iphdr *iph = ip_hdr(skb); 2766 struct ipv6hdr *ip6h = ipv6_hdr(skb); 2767 2768 /*fix header to TSO values ...*/ 2769 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO; 2770 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso); 2771 /*set values which are fix for the first approach ...*/ 2772 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso); 2773 hdr->ext.imb_hdr_no = 1; 2774 hdr->ext.hdr_type = 1; 2775 hdr->ext.hdr_version = 1; 2776 hdr->ext.hdr_len = 28; 2777 /*insert non-fix values */ 2778 hdr->ext.mss = skb_shinfo(skb)->gso_size; 2779 hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4); 2780 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len - 2781 sizeof(struct qeth_hdr_tso)); 2782 tcph->check = 0; 2783 if (skb->protocol == ETH_P_IPV6) { 2784 ip6h->payload_len = 0; 2785 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr, 2786 0, IPPROTO_TCP, 0); 2787 } else { 2788 /*OSA want us to set these values ...*/ 2789 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 2790 0, IPPROTO_TCP, 0); 2791 iph->tot_len = 0; 2792 iph->check = 0; 2793 } 2794 } 2795 2796 static inline int qeth_l3_tso_elements(struct sk_buff *skb) 2797 { 2798 unsigned long tcpd = (unsigned long)tcp_hdr(skb) + 2799 tcp_hdr(skb)->doff * 4; 2800 int tcpd_len = skb_headlen(skb) - (tcpd - (unsigned long)skb->data); 2801 int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd); 2802 2803 elements += qeth_get_elements_for_frags(skb); 2804 2805 return elements; 2806 } 2807 2808 static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 2809 { 2810 int rc; 2811 u16 *tag; 2812 struct qeth_hdr *hdr = NULL; 2813 int elements_needed = 0; 2814 int elems; 2815 struct qeth_card *card = dev->ml_priv; 2816 struct sk_buff *new_skb = NULL; 2817 int ipv = qeth_get_ip_version(skb); 2818 int cast_type = qeth_l3_get_cast_type(card, skb); 2819 struct qeth_qdio_out_q *queue = 2820 card->qdio.out_qs[card->qdio.do_prio_queueing 2821 || (cast_type && card->info.is_multicast_different) ? 2822 qeth_get_priority_queue(card, skb, ipv, cast_type) : 2823 card->qdio.default_out_queue]; 2824 int tx_bytes = skb->len; 2825 bool large_send; 2826 int data_offset = -1; 2827 int nr_frags; 2828 2829 if (((card->info.type == QETH_CARD_TYPE_IQD) && 2830 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) || 2831 ((card->options.cq == QETH_CQ_ENABLED) && 2832 (skb->protocol != ETH_P_AF_IUCV)))) || 2833 card->options.sniffer) 2834 goto tx_drop; 2835 2836 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 2837 card->stats.tx_carrier_errors++; 2838 goto tx_drop; 2839 } 2840 2841 if ((cast_type == RTN_BROADCAST) && 2842 (card->info.broadcast_capable == 0)) 2843 goto tx_drop; 2844 2845 if (card->options.performance_stats) { 2846 card->perf_stats.outbound_cnt++; 2847 card->perf_stats.outbound_start_time = qeth_get_micros(); 2848 } 2849 2850 large_send = skb_is_gso(skb); 2851 2852 if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) && 2853 (skb_shinfo(skb)->nr_frags == 0)) { 2854 new_skb = skb; 2855 if (new_skb->protocol == ETH_P_AF_IUCV) 2856 data_offset = 0; 2857 else 2858 data_offset = ETH_HLEN; 2859 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 2860 if (!hdr) 2861 goto tx_drop; 2862 elements_needed++; 2863 } else { 2864 /* create a clone with writeable headroom */ 2865 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso) 2866 + VLAN_HLEN); 2867 if (!new_skb) 2868 goto tx_drop; 2869 } 2870 2871 if (card->info.type == QETH_CARD_TYPE_IQD) { 2872 if (data_offset < 0) 2873 skb_pull(new_skb, ETH_HLEN); 2874 } else { 2875 if (ipv == 4) { 2876 skb_pull(new_skb, ETH_HLEN); 2877 } 2878 2879 if (ipv != 4 && skb_vlan_tag_present(new_skb)) { 2880 skb_push(new_skb, VLAN_HLEN); 2881 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4); 2882 skb_copy_to_linear_data_offset(new_skb, 4, 2883 new_skb->data + 8, 4); 2884 skb_copy_to_linear_data_offset(new_skb, 8, 2885 new_skb->data + 12, 4); 2886 tag = (u16 *)(new_skb->data + 12); 2887 *tag = __constant_htons(ETH_P_8021Q); 2888 *(tag + 1) = htons(skb_vlan_tag_get(new_skb)); 2889 } 2890 } 2891 2892 netif_stop_queue(dev); 2893 2894 /* fix hardware limitation: as long as we do not have sbal 2895 * chaining we can not send long frag lists 2896 */ 2897 if (large_send) { 2898 if (qeth_l3_tso_elements(new_skb) + 1 > 16) { 2899 if (skb_linearize(new_skb)) 2900 goto tx_drop; 2901 if (card->options.performance_stats) 2902 card->perf_stats.tx_lin++; 2903 } 2904 } 2905 2906 if (large_send && (cast_type == RTN_UNSPEC)) { 2907 hdr = (struct qeth_hdr *)skb_push(new_skb, 2908 sizeof(struct qeth_hdr_tso)); 2909 memset(hdr, 0, sizeof(struct qeth_hdr_tso)); 2910 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type); 2911 qeth_tso_fill_header(card, hdr, new_skb); 2912 elements_needed++; 2913 } else { 2914 if (data_offset < 0) { 2915 hdr = (struct qeth_hdr *)skb_push(new_skb, 2916 sizeof(struct qeth_hdr)); 2917 qeth_l3_fill_header(card, hdr, new_skb, ipv, 2918 cast_type); 2919 } else { 2920 if (new_skb->protocol == ETH_P_AF_IUCV) 2921 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb); 2922 else { 2923 qeth_l3_fill_header(card, hdr, new_skb, ipv, 2924 cast_type); 2925 hdr->hdr.l3.length = new_skb->len - data_offset; 2926 } 2927 } 2928 2929 if (skb->ip_summed == CHECKSUM_PARTIAL) 2930 qeth_l3_hdr_csum(card, hdr, new_skb); 2931 } 2932 2933 elems = qeth_get_elements_no(card, new_skb, elements_needed); 2934 if (!elems) { 2935 if (data_offset >= 0) 2936 kmem_cache_free(qeth_core_header_cache, hdr); 2937 goto tx_drop; 2938 } 2939 elements_needed += elems; 2940 nr_frags = skb_shinfo(new_skb)->nr_frags; 2941 2942 if (card->info.type != QETH_CARD_TYPE_IQD) { 2943 int len; 2944 if (large_send) 2945 len = ((unsigned long)tcp_hdr(new_skb) + 2946 tcp_hdr(new_skb)->doff * 4) - 2947 (unsigned long)new_skb->data; 2948 else 2949 len = sizeof(struct qeth_hdr_layer3); 2950 2951 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len)) 2952 goto tx_drop; 2953 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 2954 elements_needed); 2955 } else 2956 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 2957 elements_needed, data_offset, 0); 2958 2959 if (!rc) { 2960 card->stats.tx_packets++; 2961 card->stats.tx_bytes += tx_bytes; 2962 if (new_skb != skb) 2963 dev_kfree_skb_any(skb); 2964 if (card->options.performance_stats) { 2965 if (large_send) { 2966 card->perf_stats.large_send_bytes += tx_bytes; 2967 card->perf_stats.large_send_cnt++; 2968 } 2969 if (nr_frags) { 2970 card->perf_stats.sg_skbs_sent++; 2971 /* nr_frags + skb->data */ 2972 card->perf_stats.sg_frags_sent += nr_frags + 1; 2973 } 2974 } 2975 rc = NETDEV_TX_OK; 2976 } else { 2977 if (data_offset >= 0) 2978 kmem_cache_free(qeth_core_header_cache, hdr); 2979 2980 if (rc == -EBUSY) { 2981 if (new_skb != skb) 2982 dev_kfree_skb_any(new_skb); 2983 return NETDEV_TX_BUSY; 2984 } else 2985 goto tx_drop; 2986 } 2987 2988 netif_wake_queue(dev); 2989 if (card->options.performance_stats) 2990 card->perf_stats.outbound_time += qeth_get_micros() - 2991 card->perf_stats.outbound_start_time; 2992 return rc; 2993 2994 tx_drop: 2995 card->stats.tx_dropped++; 2996 card->stats.tx_errors++; 2997 if ((new_skb != skb) && new_skb) 2998 dev_kfree_skb_any(new_skb); 2999 dev_kfree_skb_any(skb); 3000 netif_wake_queue(dev); 3001 return NETDEV_TX_OK; 3002 } 3003 3004 static int __qeth_l3_open(struct net_device *dev) 3005 { 3006 struct qeth_card *card = dev->ml_priv; 3007 int rc = 0; 3008 3009 QETH_CARD_TEXT(card, 4, "qethopen"); 3010 if (card->state == CARD_STATE_UP) 3011 return rc; 3012 if (card->state != CARD_STATE_SOFTSETUP) 3013 return -ENODEV; 3014 card->data.state = CH_STATE_UP; 3015 card->state = CARD_STATE_UP; 3016 netif_start_queue(dev); 3017 3018 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 3019 napi_enable(&card->napi); 3020 napi_schedule(&card->napi); 3021 } else 3022 rc = -EIO; 3023 return rc; 3024 } 3025 3026 static int qeth_l3_open(struct net_device *dev) 3027 { 3028 struct qeth_card *card = dev->ml_priv; 3029 3030 QETH_CARD_TEXT(card, 5, "qethope_"); 3031 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 3032 QETH_CARD_TEXT(card, 3, "openREC"); 3033 return -ERESTARTSYS; 3034 } 3035 return __qeth_l3_open(dev); 3036 } 3037 3038 static int qeth_l3_stop(struct net_device *dev) 3039 { 3040 struct qeth_card *card = dev->ml_priv; 3041 3042 QETH_CARD_TEXT(card, 4, "qethstop"); 3043 netif_tx_disable(dev); 3044 if (card->state == CARD_STATE_UP) { 3045 card->state = CARD_STATE_SOFTSETUP; 3046 napi_disable(&card->napi); 3047 } 3048 return 0; 3049 } 3050 3051 static netdev_features_t qeth_l3_fix_features(struct net_device *dev, 3052 netdev_features_t features) 3053 { 3054 struct qeth_card *card = dev->ml_priv; 3055 3056 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 3057 features &= ~NETIF_F_IP_CSUM; 3058 if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) 3059 features &= ~NETIF_F_TSO; 3060 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 3061 features &= ~NETIF_F_RXCSUM; 3062 return features; 3063 } 3064 3065 static int qeth_l3_set_features(struct net_device *dev, 3066 netdev_features_t features) 3067 { 3068 struct qeth_card *card = dev->ml_priv; 3069 netdev_features_t changed = dev->features ^ features; 3070 3071 if (!(changed & NETIF_F_RXCSUM)) 3072 return 0; 3073 3074 if (card->state == CARD_STATE_DOWN || 3075 card->state == CARD_STATE_RECOVER) 3076 return 0; 3077 3078 return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0); 3079 } 3080 3081 static const struct ethtool_ops qeth_l3_ethtool_ops = { 3082 .get_link = ethtool_op_get_link, 3083 .get_strings = qeth_core_get_strings, 3084 .get_ethtool_stats = qeth_core_get_ethtool_stats, 3085 .get_sset_count = qeth_core_get_sset_count, 3086 .get_drvinfo = qeth_core_get_drvinfo, 3087 .get_settings = qeth_core_ethtool_get_settings, 3088 }; 3089 3090 /* 3091 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting 3092 * NOARP on the netdevice is no option because it also turns off neighbor 3093 * solicitation. For IPv4 we install a neighbor_setup function. We don't want 3094 * arp resolution but we want the hard header (packet socket will work 3095 * e.g. tcpdump) 3096 */ 3097 static int qeth_l3_neigh_setup_noarp(struct neighbour *n) 3098 { 3099 n->nud_state = NUD_NOARP; 3100 memcpy(n->ha, "FAKELL", 6); 3101 n->output = n->ops->connected_output; 3102 return 0; 3103 } 3104 3105 static int 3106 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) 3107 { 3108 if (np->tbl->family == AF_INET) 3109 np->neigh_setup = qeth_l3_neigh_setup_noarp; 3110 3111 return 0; 3112 } 3113 3114 static const struct net_device_ops qeth_l3_netdev_ops = { 3115 .ndo_open = qeth_l3_open, 3116 .ndo_stop = qeth_l3_stop, 3117 .ndo_get_stats = qeth_get_stats, 3118 .ndo_start_xmit = qeth_l3_hard_start_xmit, 3119 .ndo_validate_addr = eth_validate_addr, 3120 .ndo_set_rx_mode = qeth_l3_set_multicast_list, 3121 .ndo_do_ioctl = qeth_l3_do_ioctl, 3122 .ndo_change_mtu = qeth_change_mtu, 3123 .ndo_fix_features = qeth_l3_fix_features, 3124 .ndo_set_features = qeth_l3_set_features, 3125 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 3126 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 3127 .ndo_tx_timeout = qeth_tx_timeout, 3128 }; 3129 3130 static const struct net_device_ops qeth_l3_osa_netdev_ops = { 3131 .ndo_open = qeth_l3_open, 3132 .ndo_stop = qeth_l3_stop, 3133 .ndo_get_stats = qeth_get_stats, 3134 .ndo_start_xmit = qeth_l3_hard_start_xmit, 3135 .ndo_validate_addr = eth_validate_addr, 3136 .ndo_set_rx_mode = qeth_l3_set_multicast_list, 3137 .ndo_do_ioctl = qeth_l3_do_ioctl, 3138 .ndo_change_mtu = qeth_change_mtu, 3139 .ndo_fix_features = qeth_l3_fix_features, 3140 .ndo_set_features = qeth_l3_set_features, 3141 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 3142 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 3143 .ndo_tx_timeout = qeth_tx_timeout, 3144 .ndo_neigh_setup = qeth_l3_neigh_setup, 3145 }; 3146 3147 static int qeth_l3_setup_netdev(struct qeth_card *card) 3148 { 3149 int rc; 3150 3151 if (card->info.type == QETH_CARD_TYPE_OSD || 3152 card->info.type == QETH_CARD_TYPE_OSX) { 3153 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) || 3154 (card->info.link_type == QETH_LINK_TYPE_HSTR)) { 3155 pr_info("qeth_l3: ignoring TR device\n"); 3156 return -ENODEV; 3157 } else { 3158 card->dev = alloc_etherdev(0); 3159 if (!card->dev) 3160 return -ENODEV; 3161 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; 3162 3163 /*IPv6 address autoconfiguration stuff*/ 3164 qeth_l3_get_unique_id(card); 3165 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD)) 3166 card->dev->dev_id = card->info.unique_id & 3167 0xffff; 3168 if (!card->info.guestlan) { 3169 card->dev->hw_features = NETIF_F_SG | 3170 NETIF_F_RXCSUM | NETIF_F_IP_CSUM | 3171 NETIF_F_TSO; 3172 card->dev->features = NETIF_F_RXCSUM; 3173 } 3174 } 3175 } else if (card->info.type == QETH_CARD_TYPE_IQD) { 3176 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 3177 ether_setup); 3178 if (!card->dev) 3179 return -ENODEV; 3180 card->dev->flags |= IFF_NOARP; 3181 card->dev->netdev_ops = &qeth_l3_netdev_ops; 3182 rc = qeth_l3_iqd_read_initial_mac(card); 3183 if (rc) 3184 return rc; 3185 if (card->options.hsuid[0]) 3186 memcpy(card->dev->perm_addr, card->options.hsuid, 9); 3187 } else 3188 return -ENODEV; 3189 3190 card->dev->ml_priv = card; 3191 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 3192 card->dev->mtu = card->info.initial_mtu; 3193 card->dev->ethtool_ops = &qeth_l3_ethtool_ops; 3194 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 3195 NETIF_F_HW_VLAN_CTAG_RX | 3196 NETIF_F_HW_VLAN_CTAG_FILTER; 3197 netif_keep_dst(card->dev); 3198 card->dev->gso_max_size = 15 * PAGE_SIZE; 3199 3200 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 3201 netif_napi_add(card->dev, &card->napi, qeth_l3_poll, QETH_NAPI_WEIGHT); 3202 netif_carrier_off(card->dev); 3203 return register_netdev(card->dev); 3204 } 3205 3206 static int qeth_l3_probe_device(struct ccwgroup_device *gdev) 3207 { 3208 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3209 3210 qeth_l3_create_device_attributes(&gdev->dev); 3211 card->options.layer2 = 0; 3212 card->info.hwtrap = 0; 3213 return 0; 3214 } 3215 3216 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) 3217 { 3218 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 3219 3220 qeth_l3_remove_device_attributes(&cgdev->dev); 3221 3222 qeth_set_allowed_threads(card, 0, 1); 3223 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 3224 3225 if (cgdev->state == CCWGROUP_ONLINE) 3226 qeth_l3_set_offline(cgdev); 3227 3228 if (card->dev) { 3229 unregister_netdev(card->dev); 3230 card->dev = NULL; 3231 } 3232 3233 qeth_l3_clear_ip_list(card, 0); 3234 qeth_l3_clear_ipato_list(card); 3235 return; 3236 } 3237 3238 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) 3239 { 3240 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3241 int rc = 0; 3242 enum qeth_card_states recover_flag; 3243 3244 mutex_lock(&card->discipline_mutex); 3245 mutex_lock(&card->conf_mutex); 3246 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 3247 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 3248 3249 recover_flag = card->state; 3250 rc = qeth_core_hardsetup_card(card); 3251 if (rc) { 3252 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 3253 rc = -ENODEV; 3254 goto out_remove; 3255 } 3256 3257 if (!card->dev && qeth_l3_setup_netdev(card)) { 3258 rc = -ENODEV; 3259 goto out_remove; 3260 } 3261 3262 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 3263 if (card->info.hwtrap && 3264 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 3265 card->info.hwtrap = 0; 3266 } else 3267 card->info.hwtrap = 0; 3268 3269 card->state = CARD_STATE_HARDSETUP; 3270 memset(&card->rx, 0, sizeof(struct qeth_rx)); 3271 qeth_print_status_message(card); 3272 3273 /* softsetup */ 3274 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 3275 3276 rc = qeth_send_startlan(card); 3277 if (rc) { 3278 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 3279 if (rc == 0xe080) { 3280 dev_warn(&card->gdev->dev, 3281 "The LAN is offline\n"); 3282 card->lan_online = 0; 3283 goto contin; 3284 } 3285 rc = -ENODEV; 3286 goto out_remove; 3287 } else 3288 card->lan_online = 1; 3289 3290 contin: 3291 rc = qeth_l3_setadapter_parms(card); 3292 if (rc) 3293 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 3294 if (!card->options.sniffer) { 3295 rc = qeth_l3_start_ipassists(card); 3296 if (rc) { 3297 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 3298 goto out_remove; 3299 } 3300 rc = qeth_l3_setrouting_v4(card); 3301 if (rc) 3302 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc); 3303 rc = qeth_l3_setrouting_v6(card); 3304 if (rc) 3305 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc); 3306 } 3307 netif_tx_disable(card->dev); 3308 3309 rc = qeth_init_qdio_queues(card); 3310 if (rc) { 3311 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 3312 rc = -ENODEV; 3313 goto out_remove; 3314 } 3315 card->state = CARD_STATE_SOFTSETUP; 3316 3317 qeth_set_allowed_threads(card, 0xffffffff, 0); 3318 qeth_l3_set_ip_addr_list(card); 3319 if (card->lan_online) 3320 netif_carrier_on(card->dev); 3321 else 3322 netif_carrier_off(card->dev); 3323 if (recover_flag == CARD_STATE_RECOVER) { 3324 rtnl_lock(); 3325 if (recovery_mode) 3326 __qeth_l3_open(card->dev); 3327 else 3328 dev_open(card->dev); 3329 qeth_l3_set_multicast_list(card->dev); 3330 rtnl_unlock(); 3331 } 3332 qeth_trace_features(card); 3333 /* let user_space know that device is online */ 3334 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 3335 mutex_unlock(&card->conf_mutex); 3336 mutex_unlock(&card->discipline_mutex); 3337 return 0; 3338 out_remove: 3339 qeth_l3_stop_card(card, 0); 3340 ccw_device_set_offline(CARD_DDEV(card)); 3341 ccw_device_set_offline(CARD_WDEV(card)); 3342 ccw_device_set_offline(CARD_RDEV(card)); 3343 qdio_free(CARD_DDEV(card)); 3344 if (recover_flag == CARD_STATE_RECOVER) 3345 card->state = CARD_STATE_RECOVER; 3346 else 3347 card->state = CARD_STATE_DOWN; 3348 mutex_unlock(&card->conf_mutex); 3349 mutex_unlock(&card->discipline_mutex); 3350 return rc; 3351 } 3352 3353 static int qeth_l3_set_online(struct ccwgroup_device *gdev) 3354 { 3355 return __qeth_l3_set_online(gdev, 0); 3356 } 3357 3358 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev, 3359 int recovery_mode) 3360 { 3361 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 3362 int rc = 0, rc2 = 0, rc3 = 0; 3363 enum qeth_card_states recover_flag; 3364 3365 mutex_lock(&card->discipline_mutex); 3366 mutex_lock(&card->conf_mutex); 3367 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 3368 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 3369 3370 if (card->dev && netif_carrier_ok(card->dev)) 3371 netif_carrier_off(card->dev); 3372 recover_flag = card->state; 3373 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 3374 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 3375 card->info.hwtrap = 1; 3376 } 3377 qeth_l3_stop_card(card, recovery_mode); 3378 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) { 3379 rtnl_lock(); 3380 call_netdevice_notifiers(NETDEV_REBOOT, card->dev); 3381 rtnl_unlock(); 3382 } 3383 rc = ccw_device_set_offline(CARD_DDEV(card)); 3384 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 3385 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 3386 if (!rc) 3387 rc = (rc2) ? rc2 : rc3; 3388 if (rc) 3389 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 3390 qdio_free(CARD_DDEV(card)); 3391 if (recover_flag == CARD_STATE_UP) 3392 card->state = CARD_STATE_RECOVER; 3393 /* let user_space know that device is offline */ 3394 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 3395 mutex_unlock(&card->conf_mutex); 3396 mutex_unlock(&card->discipline_mutex); 3397 return 0; 3398 } 3399 3400 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev) 3401 { 3402 return __qeth_l3_set_offline(cgdev, 0); 3403 } 3404 3405 static int qeth_l3_recover(void *ptr) 3406 { 3407 struct qeth_card *card; 3408 int rc = 0; 3409 3410 card = (struct qeth_card *) ptr; 3411 QETH_CARD_TEXT(card, 2, "recover1"); 3412 QETH_CARD_HEX(card, 2, &card, sizeof(void *)); 3413 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 3414 return 0; 3415 QETH_CARD_TEXT(card, 2, "recover2"); 3416 dev_warn(&card->gdev->dev, 3417 "A recovery process has been started for the device\n"); 3418 qeth_set_recovery_task(card); 3419 __qeth_l3_set_offline(card->gdev, 1); 3420 rc = __qeth_l3_set_online(card->gdev, 1); 3421 if (!rc) 3422 dev_info(&card->gdev->dev, 3423 "Device successfully recovered!\n"); 3424 else { 3425 qeth_close_dev(card); 3426 dev_warn(&card->gdev->dev, "The qeth device driver " 3427 "failed to recover an error on the device\n"); 3428 } 3429 qeth_clear_recovery_task(card); 3430 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 3431 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 3432 return 0; 3433 } 3434 3435 static void qeth_l3_shutdown(struct ccwgroup_device *gdev) 3436 { 3437 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3438 qeth_set_allowed_threads(card, 0, 1); 3439 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 3440 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 3441 qeth_qdio_clear_card(card, 0); 3442 qeth_clear_qdio_buffers(card); 3443 qdio_free(CARD_DDEV(card)); 3444 } 3445 3446 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev) 3447 { 3448 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3449 3450 if (card->dev) 3451 netif_device_detach(card->dev); 3452 qeth_set_allowed_threads(card, 0, 1); 3453 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 3454 if (gdev->state == CCWGROUP_OFFLINE) 3455 return 0; 3456 if (card->state == CARD_STATE_UP) { 3457 if (card->info.hwtrap) 3458 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 3459 __qeth_l3_set_offline(card->gdev, 1); 3460 } else 3461 __qeth_l3_set_offline(card->gdev, 0); 3462 return 0; 3463 } 3464 3465 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev) 3466 { 3467 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3468 int rc = 0; 3469 3470 if (gdev->state == CCWGROUP_OFFLINE) 3471 goto out; 3472 3473 if (card->state == CARD_STATE_RECOVER) { 3474 rc = __qeth_l3_set_online(card->gdev, 1); 3475 if (rc) { 3476 rtnl_lock(); 3477 dev_close(card->dev); 3478 rtnl_unlock(); 3479 } 3480 } else 3481 rc = __qeth_l3_set_online(card->gdev, 0); 3482 out: 3483 qeth_set_allowed_threads(card, 0xffffffff, 0); 3484 if (card->dev) 3485 netif_device_attach(card->dev); 3486 if (rc) 3487 dev_warn(&card->gdev->dev, "The qeth device driver " 3488 "failed to recover an error on the device\n"); 3489 return rc; 3490 } 3491 3492 /* Returns zero if the command is successfully "consumed" */ 3493 static int qeth_l3_control_event(struct qeth_card *card, 3494 struct qeth_ipa_cmd *cmd) 3495 { 3496 return 1; 3497 } 3498 3499 struct qeth_discipline qeth_l3_discipline = { 3500 .start_poll = qeth_qdio_start_poll, 3501 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 3502 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 3503 .recover = qeth_l3_recover, 3504 .setup = qeth_l3_probe_device, 3505 .remove = qeth_l3_remove_device, 3506 .set_online = qeth_l3_set_online, 3507 .set_offline = qeth_l3_set_offline, 3508 .shutdown = qeth_l3_shutdown, 3509 .freeze = qeth_l3_pm_suspend, 3510 .thaw = qeth_l3_pm_resume, 3511 .restore = qeth_l3_pm_resume, 3512 .control_event_handler = qeth_l3_control_event, 3513 }; 3514 EXPORT_SYMBOL_GPL(qeth_l3_discipline); 3515 3516 static int qeth_l3_ip_event(struct notifier_block *this, 3517 unsigned long event, void *ptr) 3518 { 3519 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 3520 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev; 3521 struct qeth_ipaddr *addr; 3522 struct qeth_card *card; 3523 3524 if (dev_net(dev) != &init_net) 3525 return NOTIFY_DONE; 3526 3527 card = qeth_l3_get_card_from_dev(dev); 3528 if (!card) 3529 return NOTIFY_DONE; 3530 QETH_CARD_TEXT(card, 3, "ipevent"); 3531 3532 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 3533 if (addr != NULL) { 3534 addr->u.a4.addr = ifa->ifa_address; 3535 addr->u.a4.mask = ifa->ifa_mask; 3536 addr->type = QETH_IP_TYPE_NORMAL; 3537 } else 3538 goto out; 3539 3540 switch (event) { 3541 case NETDEV_UP: 3542 if (!qeth_l3_add_ip(card, addr)) 3543 kfree(addr); 3544 break; 3545 case NETDEV_DOWN: 3546 if (!qeth_l3_delete_ip(card, addr)) 3547 kfree(addr); 3548 break; 3549 default: 3550 break; 3551 } 3552 qeth_l3_set_ip_addr_list(card); 3553 out: 3554 return NOTIFY_DONE; 3555 } 3556 3557 static struct notifier_block qeth_l3_ip_notifier = { 3558 qeth_l3_ip_event, 3559 NULL, 3560 }; 3561 3562 #ifdef CONFIG_QETH_IPV6 3563 /** 3564 * IPv6 event handler 3565 */ 3566 static int qeth_l3_ip6_event(struct notifier_block *this, 3567 unsigned long event, void *ptr) 3568 { 3569 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 3570 struct net_device *dev = (struct net_device *)ifa->idev->dev; 3571 struct qeth_ipaddr *addr; 3572 struct qeth_card *card; 3573 3574 card = qeth_l3_get_card_from_dev(dev); 3575 if (!card) 3576 return NOTIFY_DONE; 3577 QETH_CARD_TEXT(card, 3, "ip6event"); 3578 if (!qeth_is_supported(card, IPA_IPV6)) 3579 return NOTIFY_DONE; 3580 3581 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 3582 if (addr != NULL) { 3583 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr)); 3584 addr->u.a6.pfxlen = ifa->prefix_len; 3585 addr->type = QETH_IP_TYPE_NORMAL; 3586 } else 3587 goto out; 3588 3589 switch (event) { 3590 case NETDEV_UP: 3591 if (!qeth_l3_add_ip(card, addr)) 3592 kfree(addr); 3593 break; 3594 case NETDEV_DOWN: 3595 if (!qeth_l3_delete_ip(card, addr)) 3596 kfree(addr); 3597 break; 3598 default: 3599 break; 3600 } 3601 qeth_l3_set_ip_addr_list(card); 3602 out: 3603 return NOTIFY_DONE; 3604 } 3605 3606 static struct notifier_block qeth_l3_ip6_notifier = { 3607 qeth_l3_ip6_event, 3608 NULL, 3609 }; 3610 #endif 3611 3612 static int qeth_l3_register_notifiers(void) 3613 { 3614 int rc; 3615 3616 QETH_DBF_TEXT(SETUP, 5, "regnotif"); 3617 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); 3618 if (rc) 3619 return rc; 3620 #ifdef CONFIG_QETH_IPV6 3621 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); 3622 if (rc) { 3623 unregister_inetaddr_notifier(&qeth_l3_ip_notifier); 3624 return rc; 3625 } 3626 #else 3627 pr_warn("There is no IPv6 support for the layer 3 discipline\n"); 3628 #endif 3629 return 0; 3630 } 3631 3632 static void qeth_l3_unregister_notifiers(void) 3633 { 3634 3635 QETH_DBF_TEXT(SETUP, 5, "unregnot"); 3636 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); 3637 #ifdef CONFIG_QETH_IPV6 3638 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); 3639 #endif /* QETH_IPV6 */ 3640 } 3641 3642 static int __init qeth_l3_init(void) 3643 { 3644 int rc = 0; 3645 3646 pr_info("register layer 3 discipline\n"); 3647 rc = qeth_l3_register_notifiers(); 3648 return rc; 3649 } 3650 3651 static void __exit qeth_l3_exit(void) 3652 { 3653 qeth_l3_unregister_notifiers(); 3654 pr_info("unregister layer 3 discipline\n"); 3655 } 3656 3657 module_init(qeth_l3_init); 3658 module_exit(qeth_l3_exit); 3659 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 3660 MODULE_DESCRIPTION("qeth layer 3 discipline"); 3661 MODULE_LICENSE("GPL"); 3662