1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2007, 2009 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #define KMSG_COMPONENT "qeth" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/bitops.h> 16 #include <linux/string.h> 17 #include <linux/errno.h> 18 #include <linux/kernel.h> 19 #include <linux/etherdevice.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 #include <linux/hashtable.h> 34 35 #include "qeth_l3.h" 36 37 38 static int qeth_l3_set_offline(struct ccwgroup_device *); 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_register_addr_entry(struct qeth_card *, 42 struct qeth_ipaddr *); 43 static int qeth_l3_deregister_addr_entry(struct qeth_card *, 44 struct qeth_ipaddr *); 45 46 static int qeth_l3_isxdigit(char *buf) 47 { 48 while (*buf) { 49 if (!isxdigit(*buf++)) 50 return 0; 51 } 52 return 1; 53 } 54 55 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf) 56 { 57 sprintf(buf, "%pI4", addr); 58 } 59 60 static int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr) 61 { 62 int count = 0, rc = 0; 63 unsigned int in[4]; 64 char c; 65 66 rc = sscanf(buf, "%u.%u.%u.%u%c", 67 &in[0], &in[1], &in[2], &in[3], &c); 68 if (rc != 4 && (rc != 5 || c != '\n')) 69 return -EINVAL; 70 for (count = 0; count < 4; count++) { 71 if (in[count] > 255) 72 return -EINVAL; 73 addr[count] = in[count]; 74 } 75 return 0; 76 } 77 78 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf) 79 { 80 sprintf(buf, "%pI6", addr); 81 } 82 83 static int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr) 84 { 85 const char *end, *end_tmp, *start; 86 __u16 *in; 87 char num[5]; 88 int num2, cnt, out, found, save_cnt; 89 unsigned short in_tmp[8] = {0, }; 90 91 cnt = out = found = save_cnt = num2 = 0; 92 end = start = buf; 93 in = (__u16 *) addr; 94 memset(in, 0, 16); 95 while (*end) { 96 end = strchr(start, ':'); 97 if (end == NULL) { 98 end = buf + strlen(buf); 99 end_tmp = strchr(start, '\n'); 100 if (end_tmp != NULL) 101 end = end_tmp; 102 out = 1; 103 } 104 if ((end - start)) { 105 memset(num, 0, 5); 106 if ((end - start) > 4) 107 return -EINVAL; 108 memcpy(num, start, end - start); 109 if (!qeth_l3_isxdigit(num)) 110 return -EINVAL; 111 sscanf(start, "%x", &num2); 112 if (found) 113 in_tmp[save_cnt++] = num2; 114 else 115 in[cnt++] = num2; 116 if (out) 117 break; 118 } else { 119 if (found) 120 return -EINVAL; 121 found = 1; 122 } 123 start = ++end; 124 } 125 if (cnt + save_cnt > 8) 126 return -EINVAL; 127 cnt = 7; 128 while (save_cnt) 129 in[cnt--] = in_tmp[--save_cnt]; 130 return 0; 131 } 132 133 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr, 134 char *buf) 135 { 136 if (proto == QETH_PROT_IPV4) 137 qeth_l3_ipaddr4_to_string(addr, buf); 138 else if (proto == QETH_PROT_IPV6) 139 qeth_l3_ipaddr6_to_string(addr, buf); 140 } 141 142 int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto, 143 __u8 *addr) 144 { 145 if (proto == QETH_PROT_IPV4) 146 return qeth_l3_string_to_ipaddr4(buf, addr); 147 else if (proto == QETH_PROT_IPV6) 148 return qeth_l3_string_to_ipaddr6(buf, addr); 149 else 150 return -EINVAL; 151 } 152 153 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len) 154 { 155 int i, j; 156 u8 octet; 157 158 for (i = 0; i < len; ++i) { 159 octet = addr[i]; 160 for (j = 7; j >= 0; --j) { 161 bits[i*8 + j] = octet & 1; 162 octet >>= 1; 163 } 164 } 165 } 166 167 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, 168 struct qeth_ipaddr *addr) 169 { 170 struct qeth_ipato_entry *ipatoe; 171 u8 addr_bits[128] = {0, }; 172 u8 ipatoe_bits[128] = {0, }; 173 int rc = 0; 174 175 if (!card->ipato.enabled) 176 return 0; 177 if (addr->type != QETH_IP_TYPE_NORMAL) 178 return 0; 179 180 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits, 181 (addr->proto == QETH_PROT_IPV4)? 4:16); 182 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 183 if (addr->proto != ipatoe->proto) 184 continue; 185 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits, 186 (ipatoe->proto == QETH_PROT_IPV4) ? 187 4 : 16); 188 if (addr->proto == QETH_PROT_IPV4) 189 rc = !memcmp(addr_bits, ipatoe_bits, 190 min(32, ipatoe->mask_bits)); 191 else 192 rc = !memcmp(addr_bits, ipatoe_bits, 193 min(128, ipatoe->mask_bits)); 194 if (rc) 195 break; 196 } 197 /* invert? */ 198 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4) 199 rc = !rc; 200 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6) 201 rc = !rc; 202 203 return rc; 204 } 205 206 inline int 207 qeth_l3_ipaddrs_is_equal(struct qeth_ipaddr *addr1, struct qeth_ipaddr *addr2) 208 { 209 return addr1->proto == addr2->proto && 210 !memcmp(&addr1->u, &addr2->u, sizeof(addr1->u)) && 211 !memcmp(&addr1->mac, &addr2->mac, sizeof(addr1->mac)); 212 } 213 214 static struct qeth_ipaddr * 215 qeth_l3_ip_from_hash(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) 216 { 217 struct qeth_ipaddr *addr; 218 219 if (tmp_addr->is_multicast) { 220 hash_for_each_possible(card->ip_mc_htable, addr, 221 hnode, qeth_l3_ipaddr_hash(tmp_addr)) 222 if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr)) 223 return addr; 224 } else { 225 hash_for_each_possible(card->ip_htable, addr, 226 hnode, qeth_l3_ipaddr_hash(tmp_addr)) 227 if (qeth_l3_ipaddrs_is_equal(tmp_addr, addr)) 228 return addr; 229 } 230 231 return NULL; 232 } 233 234 int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) 235 { 236 int rc = 0; 237 struct qeth_ipaddr *addr; 238 239 QETH_CARD_TEXT(card, 4, "delip"); 240 241 if (tmp_addr->proto == QETH_PROT_IPV4) 242 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 243 else { 244 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 245 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 246 } 247 248 addr = qeth_l3_ip_from_hash(card, tmp_addr); 249 if (!addr) 250 return -ENOENT; 251 252 addr->ref_counter--; 253 if (addr->ref_counter > 0 && (addr->type == QETH_IP_TYPE_NORMAL || 254 addr->type == QETH_IP_TYPE_RXIP)) 255 return rc; 256 if (addr->in_progress) 257 return -EINPROGRESS; 258 259 if (!qeth_card_hw_is_reachable(card)) { 260 addr->disp_flag = QETH_DISP_ADDR_DELETE; 261 return 0; 262 } 263 264 rc = qeth_l3_deregister_addr_entry(card, addr); 265 266 hash_del(&addr->hnode); 267 kfree(addr); 268 269 return rc; 270 } 271 272 int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) 273 { 274 int rc = 0; 275 struct qeth_ipaddr *addr; 276 277 QETH_CARD_TEXT(card, 4, "addip"); 278 279 if (tmp_addr->proto == QETH_PROT_IPV4) 280 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 281 else { 282 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 283 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 284 } 285 286 addr = qeth_l3_ip_from_hash(card, tmp_addr); 287 if (!addr) { 288 addr = qeth_l3_get_addr_buffer(tmp_addr->proto); 289 if (!addr) 290 return -ENOMEM; 291 292 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr)); 293 addr->ref_counter = 1; 294 295 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) { 296 QETH_CARD_TEXT(card, 2, "tkovaddr"); 297 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG; 298 } 299 hash_add(card->ip_htable, &addr->hnode, 300 qeth_l3_ipaddr_hash(addr)); 301 302 if (!qeth_card_hw_is_reachable(card)) { 303 addr->disp_flag = QETH_DISP_ADDR_ADD; 304 return 0; 305 } 306 307 /* qeth_l3_register_addr_entry can go to sleep 308 * if we add a IPV4 addr. It is caused by the reason 309 * that SETIP ipa cmd starts ARP staff for IPV4 addr. 310 * Thus we should unlock spinlock, and make a protection 311 * using in_progress variable to indicate that there is 312 * an hardware operation with this IPV4 address 313 */ 314 if (addr->proto == QETH_PROT_IPV4) { 315 addr->in_progress = 1; 316 spin_unlock_bh(&card->ip_lock); 317 rc = qeth_l3_register_addr_entry(card, addr); 318 spin_lock_bh(&card->ip_lock); 319 addr->in_progress = 0; 320 } else 321 rc = qeth_l3_register_addr_entry(card, addr); 322 323 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) || 324 (rc == IPA_RC_LAN_OFFLINE)) { 325 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 326 if (addr->ref_counter < 1) { 327 qeth_l3_delete_ip(card, addr); 328 kfree(addr); 329 } 330 } else { 331 hash_del(&addr->hnode); 332 kfree(addr); 333 } 334 } else { 335 if (addr->type == QETH_IP_TYPE_NORMAL || 336 addr->type == QETH_IP_TYPE_RXIP) 337 addr->ref_counter++; 338 } 339 340 return rc; 341 } 342 343 344 struct qeth_ipaddr *qeth_l3_get_addr_buffer( 345 enum qeth_prot_versions prot) 346 { 347 struct qeth_ipaddr *addr; 348 349 addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC); 350 if (!addr) 351 return NULL; 352 353 addr->type = QETH_IP_TYPE_NORMAL; 354 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 355 addr->proto = prot; 356 357 return addr; 358 } 359 360 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) 361 { 362 struct qeth_ipaddr *addr; 363 struct hlist_node *tmp; 364 int i; 365 366 QETH_CARD_TEXT(card, 4, "clearip"); 367 368 if (recover && card->options.sniffer) 369 return; 370 371 spin_lock_bh(&card->ip_lock); 372 373 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 374 if (!recover) { 375 hash_del(&addr->hnode); 376 kfree(addr); 377 continue; 378 } 379 addr->disp_flag = QETH_DISP_ADDR_ADD; 380 } 381 382 spin_unlock_bh(&card->ip_lock); 383 384 spin_lock_bh(&card->mclock); 385 386 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 387 hash_del(&addr->hnode); 388 kfree(addr); 389 } 390 391 spin_unlock_bh(&card->mclock); 392 393 394 } 395 static void qeth_l3_recover_ip(struct qeth_card *card) 396 { 397 struct qeth_ipaddr *addr; 398 struct hlist_node *tmp; 399 int i; 400 int rc; 401 402 QETH_CARD_TEXT(card, 4, "recovrip"); 403 404 spin_lock_bh(&card->ip_lock); 405 406 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 407 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) { 408 qeth_l3_deregister_addr_entry(card, addr); 409 hash_del(&addr->hnode); 410 kfree(addr); 411 } else if (addr->disp_flag == QETH_DISP_ADDR_ADD) { 412 if (addr->proto == QETH_PROT_IPV4) { 413 addr->in_progress = 1; 414 spin_unlock_bh(&card->ip_lock); 415 rc = qeth_l3_register_addr_entry(card, addr); 416 spin_lock_bh(&card->ip_lock); 417 addr->in_progress = 0; 418 } else 419 rc = qeth_l3_register_addr_entry(card, addr); 420 421 if (!rc) { 422 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 423 if (addr->ref_counter < 1) 424 qeth_l3_delete_ip(card, addr); 425 } else { 426 hash_del(&addr->hnode); 427 kfree(addr); 428 } 429 } 430 } 431 432 spin_unlock_bh(&card->ip_lock); 433 434 } 435 436 static int qeth_l3_send_setdelmc(struct qeth_card *card, 437 struct qeth_ipaddr *addr, int ipacmd) 438 { 439 int rc; 440 struct qeth_cmd_buffer *iob; 441 struct qeth_ipa_cmd *cmd; 442 443 QETH_CARD_TEXT(card, 4, "setdelmc"); 444 445 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 446 if (!iob) 447 return -ENOMEM; 448 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 449 memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN); 450 if (addr->proto == QETH_PROT_IPV6) 451 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr, 452 sizeof(struct in6_addr)); 453 else 454 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4); 455 456 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 457 458 return rc; 459 } 460 461 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len) 462 { 463 int i, j; 464 for (i = 0; i < 16; i++) { 465 j = (len) - (i * 8); 466 if (j >= 8) 467 netmask[i] = 0xff; 468 else if (j > 0) 469 netmask[i] = (u8)(0xFF00 >> j); 470 else 471 netmask[i] = 0; 472 } 473 } 474 475 static int qeth_l3_send_setdelip(struct qeth_card *card, 476 struct qeth_ipaddr *addr, int ipacmd, unsigned int flags) 477 { 478 int rc; 479 struct qeth_cmd_buffer *iob; 480 struct qeth_ipa_cmd *cmd; 481 __u8 netmask[16]; 482 483 QETH_CARD_TEXT(card, 4, "setdelip"); 484 QETH_CARD_TEXT_(card, 4, "flags%02X", flags); 485 486 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 487 if (!iob) 488 return -ENOMEM; 489 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 490 if (addr->proto == QETH_PROT_IPV6) { 491 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr, 492 sizeof(struct in6_addr)); 493 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen); 494 memcpy(cmd->data.setdelip6.mask, netmask, 495 sizeof(struct in6_addr)); 496 cmd->data.setdelip6.flags = flags; 497 } else { 498 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4); 499 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4); 500 cmd->data.setdelip4.flags = flags; 501 } 502 503 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 504 505 return rc; 506 } 507 508 static int qeth_l3_send_setrouting(struct qeth_card *card, 509 enum qeth_routing_types type, enum qeth_prot_versions prot) 510 { 511 int rc; 512 struct qeth_ipa_cmd *cmd; 513 struct qeth_cmd_buffer *iob; 514 515 QETH_CARD_TEXT(card, 4, "setroutg"); 516 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot); 517 if (!iob) 518 return -ENOMEM; 519 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 520 cmd->data.setrtg.type = (type); 521 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 522 523 return rc; 524 } 525 526 static int qeth_l3_correct_routing_type(struct qeth_card *card, 527 enum qeth_routing_types *type, enum qeth_prot_versions prot) 528 { 529 if (card->info.type == QETH_CARD_TYPE_IQD) { 530 switch (*type) { 531 case NO_ROUTER: 532 case PRIMARY_CONNECTOR: 533 case SECONDARY_CONNECTOR: 534 case MULTICAST_ROUTER: 535 return 0; 536 default: 537 goto out_inval; 538 } 539 } else { 540 switch (*type) { 541 case NO_ROUTER: 542 case PRIMARY_ROUTER: 543 case SECONDARY_ROUTER: 544 return 0; 545 case MULTICAST_ROUTER: 546 if (qeth_is_ipafunc_supported(card, prot, 547 IPA_OSA_MC_ROUTER)) 548 return 0; 549 default: 550 goto out_inval; 551 } 552 } 553 out_inval: 554 *type = NO_ROUTER; 555 return -EINVAL; 556 } 557 558 int qeth_l3_setrouting_v4(struct qeth_card *card) 559 { 560 int rc; 561 562 QETH_CARD_TEXT(card, 3, "setrtg4"); 563 564 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, 565 QETH_PROT_IPV4); 566 if (rc) 567 return rc; 568 569 rc = qeth_l3_send_setrouting(card, card->options.route4.type, 570 QETH_PROT_IPV4); 571 if (rc) { 572 card->options.route4.type = NO_ROUTER; 573 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" 574 " on %s. Type set to 'no router'.\n", rc, 575 QETH_CARD_IFNAME(card)); 576 } 577 return rc; 578 } 579 580 int qeth_l3_setrouting_v6(struct qeth_card *card) 581 { 582 int rc = 0; 583 584 QETH_CARD_TEXT(card, 3, "setrtg6"); 585 #ifdef CONFIG_QETH_IPV6 586 587 if (!qeth_is_supported(card, IPA_IPV6)) 588 return 0; 589 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type, 590 QETH_PROT_IPV6); 591 if (rc) 592 return rc; 593 594 rc = qeth_l3_send_setrouting(card, card->options.route6.type, 595 QETH_PROT_IPV6); 596 if (rc) { 597 card->options.route6.type = NO_ROUTER; 598 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" 599 " on %s. Type set to 'no router'.\n", rc, 600 QETH_CARD_IFNAME(card)); 601 } 602 #endif 603 return rc; 604 } 605 606 /* 607 * IP address takeover related functions 608 */ 609 610 /** 611 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs. 612 * 613 * Caller must hold ip_lock. 614 */ 615 void qeth_l3_update_ipato(struct qeth_card *card) 616 { 617 struct qeth_ipaddr *addr; 618 unsigned int i; 619 620 hash_for_each(card->ip_htable, i, addr, hnode) { 621 if (addr->type != QETH_IP_TYPE_NORMAL) 622 continue; 623 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) 624 addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG; 625 else 626 addr->set_flags &= ~QETH_IPA_SETIP_TAKEOVER_FLAG; 627 } 628 } 629 630 static void qeth_l3_clear_ipato_list(struct qeth_card *card) 631 { 632 struct qeth_ipato_entry *ipatoe, *tmp; 633 634 spin_lock_bh(&card->ip_lock); 635 636 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 637 list_del(&ipatoe->entry); 638 kfree(ipatoe); 639 } 640 641 qeth_l3_update_ipato(card); 642 spin_unlock_bh(&card->ip_lock); 643 } 644 645 int qeth_l3_add_ipato_entry(struct qeth_card *card, 646 struct qeth_ipato_entry *new) 647 { 648 struct qeth_ipato_entry *ipatoe; 649 int rc = 0; 650 651 QETH_CARD_TEXT(card, 2, "addipato"); 652 653 spin_lock_bh(&card->ip_lock); 654 655 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 656 if (ipatoe->proto != new->proto) 657 continue; 658 if (!memcmp(ipatoe->addr, new->addr, 659 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) && 660 (ipatoe->mask_bits == new->mask_bits)) { 661 rc = -EEXIST; 662 break; 663 } 664 } 665 666 if (!rc) { 667 list_add_tail(&new->entry, &card->ipato.entries); 668 qeth_l3_update_ipato(card); 669 } 670 671 spin_unlock_bh(&card->ip_lock); 672 673 return rc; 674 } 675 676 void qeth_l3_del_ipato_entry(struct qeth_card *card, 677 enum qeth_prot_versions proto, u8 *addr, int mask_bits) 678 { 679 struct qeth_ipato_entry *ipatoe, *tmp; 680 681 QETH_CARD_TEXT(card, 2, "delipato"); 682 683 spin_lock_bh(&card->ip_lock); 684 685 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 686 if (ipatoe->proto != proto) 687 continue; 688 if (!memcmp(ipatoe->addr, addr, 689 (proto == QETH_PROT_IPV4)? 4:16) && 690 (ipatoe->mask_bits == mask_bits)) { 691 list_del(&ipatoe->entry); 692 qeth_l3_update_ipato(card); 693 kfree(ipatoe); 694 } 695 } 696 697 spin_unlock_bh(&card->ip_lock); 698 } 699 700 /* 701 * VIPA related functions 702 */ 703 int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto, 704 const u8 *addr) 705 { 706 struct qeth_ipaddr *ipaddr; 707 int rc = 0; 708 709 ipaddr = qeth_l3_get_addr_buffer(proto); 710 if (ipaddr) { 711 if (proto == QETH_PROT_IPV4) { 712 QETH_CARD_TEXT(card, 2, "addvipa4"); 713 memcpy(&ipaddr->u.a4.addr, addr, 4); 714 ipaddr->u.a4.mask = 0; 715 } else if (proto == QETH_PROT_IPV6) { 716 QETH_CARD_TEXT(card, 2, "addvipa6"); 717 memcpy(&ipaddr->u.a6.addr, addr, 16); 718 ipaddr->u.a6.pfxlen = 0; 719 } 720 ipaddr->type = QETH_IP_TYPE_VIPA; 721 ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG; 722 ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG; 723 } else 724 return -ENOMEM; 725 726 spin_lock_bh(&card->ip_lock); 727 728 if (qeth_l3_ip_from_hash(card, ipaddr)) 729 rc = -EEXIST; 730 else 731 qeth_l3_add_ip(card, ipaddr); 732 733 spin_unlock_bh(&card->ip_lock); 734 735 kfree(ipaddr); 736 737 return rc; 738 } 739 740 void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto, 741 const u8 *addr) 742 { 743 struct qeth_ipaddr *ipaddr; 744 745 ipaddr = qeth_l3_get_addr_buffer(proto); 746 if (ipaddr) { 747 if (proto == QETH_PROT_IPV4) { 748 QETH_CARD_TEXT(card, 2, "delvipa4"); 749 memcpy(&ipaddr->u.a4.addr, addr, 4); 750 ipaddr->u.a4.mask = 0; 751 } else if (proto == QETH_PROT_IPV6) { 752 QETH_CARD_TEXT(card, 2, "delvipa6"); 753 memcpy(&ipaddr->u.a6.addr, addr, 16); 754 ipaddr->u.a6.pfxlen = 0; 755 } 756 ipaddr->type = QETH_IP_TYPE_VIPA; 757 } else 758 return; 759 760 spin_lock_bh(&card->ip_lock); 761 qeth_l3_delete_ip(card, ipaddr); 762 spin_unlock_bh(&card->ip_lock); 763 764 kfree(ipaddr); 765 } 766 767 /* 768 * proxy ARP related functions 769 */ 770 int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto, 771 const u8 *addr) 772 { 773 struct qeth_ipaddr *ipaddr; 774 int rc = 0; 775 776 ipaddr = qeth_l3_get_addr_buffer(proto); 777 if (ipaddr) { 778 if (proto == QETH_PROT_IPV4) { 779 QETH_CARD_TEXT(card, 2, "addrxip4"); 780 memcpy(&ipaddr->u.a4.addr, addr, 4); 781 ipaddr->u.a4.mask = 0; 782 } else if (proto == QETH_PROT_IPV6) { 783 QETH_CARD_TEXT(card, 2, "addrxip6"); 784 memcpy(&ipaddr->u.a6.addr, addr, 16); 785 ipaddr->u.a6.pfxlen = 0; 786 } 787 788 ipaddr->type = QETH_IP_TYPE_RXIP; 789 ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG; 790 ipaddr->del_flags = 0; 791 } else 792 return -ENOMEM; 793 794 spin_lock_bh(&card->ip_lock); 795 796 if (qeth_l3_ip_from_hash(card, ipaddr)) 797 rc = -EEXIST; 798 else 799 qeth_l3_add_ip(card, ipaddr); 800 801 spin_unlock_bh(&card->ip_lock); 802 803 kfree(ipaddr); 804 805 return rc; 806 } 807 808 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto, 809 const u8 *addr) 810 { 811 struct qeth_ipaddr *ipaddr; 812 813 ipaddr = qeth_l3_get_addr_buffer(proto); 814 if (ipaddr) { 815 if (proto == QETH_PROT_IPV4) { 816 QETH_CARD_TEXT(card, 2, "delrxip4"); 817 memcpy(&ipaddr->u.a4.addr, addr, 4); 818 ipaddr->u.a4.mask = 0; 819 } else if (proto == QETH_PROT_IPV6) { 820 QETH_CARD_TEXT(card, 2, "delrxip6"); 821 memcpy(&ipaddr->u.a6.addr, addr, 16); 822 ipaddr->u.a6.pfxlen = 0; 823 } 824 ipaddr->type = QETH_IP_TYPE_RXIP; 825 } else 826 return; 827 828 spin_lock_bh(&card->ip_lock); 829 qeth_l3_delete_ip(card, ipaddr); 830 spin_unlock_bh(&card->ip_lock); 831 832 kfree(ipaddr); 833 } 834 835 static int qeth_l3_register_addr_entry(struct qeth_card *card, 836 struct qeth_ipaddr *addr) 837 { 838 char buf[50]; 839 int rc = 0; 840 int cnt = 3; 841 842 843 if (addr->proto == QETH_PROT_IPV4) { 844 QETH_CARD_TEXT(card, 2, "setaddr4"); 845 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 846 } else if (addr->proto == QETH_PROT_IPV6) { 847 QETH_CARD_TEXT(card, 2, "setaddr6"); 848 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 849 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 850 } else { 851 QETH_CARD_TEXT(card, 2, "setaddr?"); 852 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 853 } 854 do { 855 if (addr->is_multicast) 856 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); 857 else 858 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP, 859 addr->set_flags); 860 if (rc) 861 QETH_CARD_TEXT(card, 2, "failed"); 862 } while ((--cnt > 0) && rc); 863 if (rc) { 864 QETH_CARD_TEXT(card, 2, "FAILED"); 865 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); 866 dev_warn(&card->gdev->dev, 867 "Registering IP address %s failed\n", buf); 868 } 869 return rc; 870 } 871 872 static int qeth_l3_deregister_addr_entry(struct qeth_card *card, 873 struct qeth_ipaddr *addr) 874 { 875 int rc = 0; 876 877 if (addr->proto == QETH_PROT_IPV4) { 878 QETH_CARD_TEXT(card, 2, "deladdr4"); 879 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 880 } else if (addr->proto == QETH_PROT_IPV6) { 881 QETH_CARD_TEXT(card, 2, "deladdr6"); 882 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 883 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 884 } else { 885 QETH_CARD_TEXT(card, 2, "deladdr?"); 886 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 887 } 888 if (addr->is_multicast) 889 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); 890 else 891 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP, 892 addr->del_flags); 893 if (rc) 894 QETH_CARD_TEXT(card, 2, "failed"); 895 896 return rc; 897 } 898 899 static u8 qeth_l3_get_qeth_hdr_flags4(int cast_type) 900 { 901 if (cast_type == RTN_MULTICAST) 902 return QETH_CAST_MULTICAST; 903 if (cast_type == RTN_BROADCAST) 904 return QETH_CAST_BROADCAST; 905 return QETH_CAST_UNICAST; 906 } 907 908 static u8 qeth_l3_get_qeth_hdr_flags6(int cast_type) 909 { 910 u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6; 911 if (cast_type == RTN_MULTICAST) 912 return ct | QETH_CAST_MULTICAST; 913 if (cast_type == RTN_ANYCAST) 914 return ct | QETH_CAST_ANYCAST; 915 if (cast_type == RTN_BROADCAST) 916 return ct | QETH_CAST_BROADCAST; 917 return ct | QETH_CAST_UNICAST; 918 } 919 920 static int qeth_l3_setadapter_parms(struct qeth_card *card) 921 { 922 int rc = 0; 923 924 QETH_DBF_TEXT(SETUP, 2, "setadprm"); 925 926 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { 927 rc = qeth_setadpparms_change_macaddr(card); 928 if (rc) 929 dev_warn(&card->gdev->dev, "Reading the adapter MAC" 930 " address failed\n"); 931 } 932 933 return rc; 934 } 935 936 #ifdef CONFIG_QETH_IPV6 937 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card, 938 enum qeth_ipa_funcs ipa_func, __u16 cmd_code) 939 { 940 int rc; 941 struct qeth_cmd_buffer *iob; 942 943 QETH_CARD_TEXT(card, 4, "simassp6"); 944 iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code, 945 0, QETH_PROT_IPV6); 946 if (!iob) 947 return -ENOMEM; 948 rc = qeth_send_setassparms(card, iob, 0, 0, 949 qeth_setassparms_cb, NULL); 950 return rc; 951 } 952 #endif 953 954 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) 955 { 956 int rc; 957 958 QETH_CARD_TEXT(card, 3, "ipaarp"); 959 960 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 961 dev_info(&card->gdev->dev, 962 "ARP processing not supported on %s!\n", 963 QETH_CARD_IFNAME(card)); 964 return 0; 965 } 966 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 967 IPA_CMD_ASS_START, 0); 968 if (rc) { 969 dev_warn(&card->gdev->dev, 970 "Starting ARP processing support for %s failed\n", 971 QETH_CARD_IFNAME(card)); 972 } 973 return rc; 974 } 975 976 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 977 { 978 int rc; 979 980 QETH_CARD_TEXT(card, 3, "stsrcmac"); 981 982 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { 983 dev_info(&card->gdev->dev, 984 "Inbound source MAC-address not supported on %s\n", 985 QETH_CARD_IFNAME(card)); 986 return -EOPNOTSUPP; 987 } 988 989 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC, 990 IPA_CMD_ASS_START, 0); 991 if (rc) 992 dev_warn(&card->gdev->dev, 993 "Starting source MAC-address support for %s failed\n", 994 QETH_CARD_IFNAME(card)); 995 return rc; 996 } 997 998 static int qeth_l3_start_ipa_vlan(struct qeth_card *card) 999 { 1000 int rc = 0; 1001 1002 QETH_CARD_TEXT(card, 3, "strtvlan"); 1003 1004 if (!qeth_is_supported(card, IPA_FULL_VLAN)) { 1005 dev_info(&card->gdev->dev, 1006 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card)); 1007 return -EOPNOTSUPP; 1008 } 1009 1010 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO, 1011 IPA_CMD_ASS_START, 0); 1012 if (rc) { 1013 dev_warn(&card->gdev->dev, 1014 "Starting VLAN support for %s failed\n", 1015 QETH_CARD_IFNAME(card)); 1016 } else { 1017 dev_info(&card->gdev->dev, "VLAN enabled\n"); 1018 } 1019 return rc; 1020 } 1021 1022 static int qeth_l3_start_ipa_multicast(struct qeth_card *card) 1023 { 1024 int rc; 1025 1026 QETH_CARD_TEXT(card, 3, "stmcast"); 1027 1028 if (!qeth_is_supported(card, IPA_MULTICASTING)) { 1029 dev_info(&card->gdev->dev, 1030 "Multicast not supported on %s\n", 1031 QETH_CARD_IFNAME(card)); 1032 return -EOPNOTSUPP; 1033 } 1034 1035 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING, 1036 IPA_CMD_ASS_START, 0); 1037 if (rc) { 1038 dev_warn(&card->gdev->dev, 1039 "Starting multicast support for %s failed\n", 1040 QETH_CARD_IFNAME(card)); 1041 } else { 1042 dev_info(&card->gdev->dev, "Multicast enabled\n"); 1043 card->dev->flags |= IFF_MULTICAST; 1044 } 1045 return rc; 1046 } 1047 1048 #ifdef CONFIG_QETH_IPV6 1049 static int qeth_l3_softsetup_ipv6(struct qeth_card *card) 1050 { 1051 int rc; 1052 1053 QETH_CARD_TEXT(card, 3, "softipv6"); 1054 1055 rc = qeth_query_ipassists(card, QETH_PROT_IPV6); 1056 if (rc) { 1057 dev_err(&card->gdev->dev, 1058 "Activating IPv6 support for %s failed\n", 1059 QETH_CARD_IFNAME(card)); 1060 return rc; 1061 } 1062 1063 if (card->info.type == QETH_CARD_TYPE_IQD) 1064 goto out; 1065 1066 rc = qeth_send_simple_setassparms(card, IPA_IPV6, 1067 IPA_CMD_ASS_START, 3); 1068 if (rc) { 1069 dev_err(&card->gdev->dev, 1070 "Activating IPv6 support for %s failed\n", 1071 QETH_CARD_IFNAME(card)); 1072 return rc; 1073 } 1074 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6, 1075 IPA_CMD_ASS_START); 1076 if (rc) { 1077 dev_err(&card->gdev->dev, 1078 "Activating IPv6 support for %s failed\n", 1079 QETH_CARD_IFNAME(card)); 1080 return rc; 1081 } 1082 rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU, 1083 IPA_CMD_ASS_START); 1084 if (rc) { 1085 dev_warn(&card->gdev->dev, 1086 "Enabling the passthrough mode for %s failed\n", 1087 QETH_CARD_IFNAME(card)); 1088 return rc; 1089 } 1090 out: 1091 dev_info(&card->gdev->dev, "IPV6 enabled\n"); 1092 return 0; 1093 } 1094 #endif 1095 1096 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) 1097 { 1098 int rc = 0; 1099 1100 QETH_CARD_TEXT(card, 3, "strtipv6"); 1101 1102 if (!qeth_is_supported(card, IPA_IPV6)) { 1103 dev_info(&card->gdev->dev, 1104 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card)); 1105 return 0; 1106 } 1107 #ifdef CONFIG_QETH_IPV6 1108 rc = qeth_l3_softsetup_ipv6(card); 1109 #endif 1110 return rc ; 1111 } 1112 1113 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) 1114 { 1115 int rc; 1116 1117 QETH_CARD_TEXT(card, 3, "stbrdcst"); 1118 card->info.broadcast_capable = 0; 1119 if (!qeth_is_supported(card, IPA_FILTERING)) { 1120 dev_info(&card->gdev->dev, 1121 "Broadcast not supported on %s\n", 1122 QETH_CARD_IFNAME(card)); 1123 rc = -EOPNOTSUPP; 1124 goto out; 1125 } 1126 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 1127 IPA_CMD_ASS_START, 0); 1128 if (rc) { 1129 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for " 1130 "%s failed\n", QETH_CARD_IFNAME(card)); 1131 goto out; 1132 } 1133 1134 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 1135 IPA_CMD_ASS_CONFIGURE, 1); 1136 if (rc) { 1137 dev_warn(&card->gdev->dev, 1138 "Setting up broadcast filtering for %s failed\n", 1139 QETH_CARD_IFNAME(card)); 1140 goto out; 1141 } 1142 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; 1143 dev_info(&card->gdev->dev, "Broadcast enabled\n"); 1144 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 1145 IPA_CMD_ASS_ENABLE, 1); 1146 if (rc) { 1147 dev_warn(&card->gdev->dev, "Setting up broadcast echo " 1148 "filtering for %s failed\n", QETH_CARD_IFNAME(card)); 1149 goto out; 1150 } 1151 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; 1152 out: 1153 if (card->info.broadcast_capable) 1154 card->dev->flags |= IFF_BROADCAST; 1155 else 1156 card->dev->flags &= ~IFF_BROADCAST; 1157 return rc; 1158 } 1159 1160 static int qeth_l3_start_ipassists(struct qeth_card *card) 1161 { 1162 QETH_CARD_TEXT(card, 3, "strtipas"); 1163 1164 if (qeth_set_access_ctrl_online(card, 0)) 1165 return -EIO; 1166 qeth_l3_start_ipa_arp_processing(card); /* go on*/ 1167 qeth_l3_start_ipa_source_mac(card); /* go on*/ 1168 qeth_l3_start_ipa_vlan(card); /* go on*/ 1169 qeth_l3_start_ipa_multicast(card); /* go on*/ 1170 qeth_l3_start_ipa_ipv6(card); /* go on*/ 1171 qeth_l3_start_ipa_broadcast(card); /* go on*/ 1172 return 0; 1173 } 1174 1175 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, 1176 struct qeth_reply *reply, unsigned long data) 1177 { 1178 struct qeth_ipa_cmd *cmd; 1179 1180 cmd = (struct qeth_ipa_cmd *) data; 1181 if (cmd->hdr.return_code == 0) 1182 memcpy(card->dev->dev_addr, 1183 cmd->data.create_destroy_addr.unique_id, ETH_ALEN); 1184 else 1185 eth_random_addr(card->dev->dev_addr); 1186 1187 return 0; 1188 } 1189 1190 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) 1191 { 1192 int rc = 0; 1193 struct qeth_cmd_buffer *iob; 1194 struct qeth_ipa_cmd *cmd; 1195 1196 QETH_DBF_TEXT(SETUP, 2, "hsrmac"); 1197 1198 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 1199 QETH_PROT_IPV6); 1200 if (!iob) 1201 return -ENOMEM; 1202 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1203 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 1204 card->info.unique_id; 1205 1206 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, 1207 NULL); 1208 return rc; 1209 } 1210 1211 static int qeth_l3_get_unique_id_cb(struct qeth_card *card, 1212 struct qeth_reply *reply, unsigned long data) 1213 { 1214 struct qeth_ipa_cmd *cmd; 1215 1216 cmd = (struct qeth_ipa_cmd *) data; 1217 if (cmd->hdr.return_code == 0) 1218 card->info.unique_id = *((__u16 *) 1219 &cmd->data.create_destroy_addr.unique_id[6]); 1220 else { 1221 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1222 UNIQUE_ID_NOT_BY_CARD; 1223 dev_warn(&card->gdev->dev, "The network adapter failed to " 1224 "generate a unique ID\n"); 1225 } 1226 return 0; 1227 } 1228 1229 static int qeth_l3_get_unique_id(struct qeth_card *card) 1230 { 1231 int rc = 0; 1232 struct qeth_cmd_buffer *iob; 1233 struct qeth_ipa_cmd *cmd; 1234 1235 QETH_DBF_TEXT(SETUP, 2, "guniqeid"); 1236 1237 if (!qeth_is_supported(card, IPA_IPV6)) { 1238 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1239 UNIQUE_ID_NOT_BY_CARD; 1240 return 0; 1241 } 1242 1243 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 1244 QETH_PROT_IPV6); 1245 if (!iob) 1246 return -ENOMEM; 1247 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1248 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 1249 card->info.unique_id; 1250 1251 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL); 1252 return rc; 1253 } 1254 1255 static int 1256 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, 1257 unsigned long data) 1258 { 1259 struct qeth_ipa_cmd *cmd; 1260 __u16 rc; 1261 1262 QETH_DBF_TEXT(SETUP, 2, "diastrcb"); 1263 1264 cmd = (struct qeth_ipa_cmd *)data; 1265 rc = cmd->hdr.return_code; 1266 if (rc) 1267 QETH_CARD_TEXT_(card, 2, "dxter%x", rc); 1268 switch (cmd->data.diagass.action) { 1269 case QETH_DIAGS_CMD_TRACE_QUERY: 1270 break; 1271 case QETH_DIAGS_CMD_TRACE_DISABLE: 1272 switch (rc) { 1273 case 0: 1274 case IPA_RC_INVALID_SUBCMD: 1275 card->info.promisc_mode = SET_PROMISC_MODE_OFF; 1276 dev_info(&card->gdev->dev, "The HiperSockets network " 1277 "traffic analyzer is deactivated\n"); 1278 break; 1279 default: 1280 break; 1281 } 1282 break; 1283 case QETH_DIAGS_CMD_TRACE_ENABLE: 1284 switch (rc) { 1285 case 0: 1286 card->info.promisc_mode = SET_PROMISC_MODE_ON; 1287 dev_info(&card->gdev->dev, "The HiperSockets network " 1288 "traffic analyzer is activated\n"); 1289 break; 1290 case IPA_RC_HARDWARE_AUTH_ERROR: 1291 dev_warn(&card->gdev->dev, "The device is not " 1292 "authorized to run as a HiperSockets network " 1293 "traffic analyzer\n"); 1294 break; 1295 case IPA_RC_TRACE_ALREADY_ACTIVE: 1296 dev_warn(&card->gdev->dev, "A HiperSockets " 1297 "network traffic analyzer is already " 1298 "active in the HiperSockets LAN\n"); 1299 break; 1300 default: 1301 break; 1302 } 1303 break; 1304 default: 1305 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n", 1306 cmd->data.diagass.action, QETH_CARD_IFNAME(card)); 1307 } 1308 1309 return 0; 1310 } 1311 1312 static int 1313 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) 1314 { 1315 struct qeth_cmd_buffer *iob; 1316 struct qeth_ipa_cmd *cmd; 1317 1318 QETH_DBF_TEXT(SETUP, 2, "diagtrac"); 1319 1320 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 1321 if (!iob) 1322 return -ENOMEM; 1323 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1324 cmd->data.diagass.subcmd_len = 16; 1325 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE; 1326 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; 1327 cmd->data.diagass.action = diags_cmd; 1328 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL); 1329 } 1330 1331 static void qeth_l3_get_mac_for_ipm(__be32 ipm, char *mac) 1332 { 1333 ip_eth_mc_map(ipm, mac); 1334 } 1335 1336 static void qeth_l3_mark_all_mc_to_be_deleted(struct qeth_card *card) 1337 { 1338 struct qeth_ipaddr *addr; 1339 int i; 1340 1341 hash_for_each(card->ip_mc_htable, i, addr, hnode) 1342 addr->disp_flag = QETH_DISP_ADDR_DELETE; 1343 1344 } 1345 1346 static void qeth_l3_add_all_new_mc(struct qeth_card *card) 1347 { 1348 struct qeth_ipaddr *addr; 1349 struct hlist_node *tmp; 1350 int i; 1351 int rc; 1352 1353 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 1354 if (addr->disp_flag == QETH_DISP_ADDR_ADD) { 1355 rc = qeth_l3_register_addr_entry(card, addr); 1356 if (!rc || (rc == IPA_RC_LAN_OFFLINE)) 1357 addr->ref_counter = 1; 1358 else { 1359 hash_del(&addr->hnode); 1360 kfree(addr); 1361 } 1362 } 1363 } 1364 1365 } 1366 1367 static void qeth_l3_delete_nonused_mc(struct qeth_card *card) 1368 { 1369 struct qeth_ipaddr *addr; 1370 struct hlist_node *tmp; 1371 int i; 1372 int rc; 1373 1374 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 1375 if (addr->disp_flag == QETH_DISP_ADDR_DELETE) { 1376 rc = qeth_l3_deregister_addr_entry(card, addr); 1377 if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) { 1378 hash_del(&addr->hnode); 1379 kfree(addr); 1380 } 1381 } 1382 } 1383 1384 } 1385 1386 1387 static void 1388 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev) 1389 { 1390 struct ip_mc_list *im4; 1391 struct qeth_ipaddr *tmp, *ipm; 1392 char buf[MAX_ADDR_LEN]; 1393 1394 QETH_CARD_TEXT(card, 4, "addmc"); 1395 1396 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1397 if (!tmp) 1398 return; 1399 1400 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL; 1401 im4 = rcu_dereference(im4->next_rcu)) { 1402 qeth_l3_get_mac_for_ipm(im4->multiaddr, buf); 1403 1404 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr); 1405 memcpy(tmp->mac, buf, sizeof(tmp->mac)); 1406 tmp->is_multicast = 1; 1407 1408 ipm = qeth_l3_ip_from_hash(card, tmp); 1409 if (ipm) { 1410 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1411 } else { 1412 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1413 if (!ipm) 1414 continue; 1415 memcpy(ipm->mac, buf, sizeof(tmp->mac)); 1416 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr); 1417 ipm->is_multicast = 1; 1418 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1419 hash_add(card->ip_mc_htable, 1420 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1421 } 1422 } 1423 1424 kfree(tmp); 1425 } 1426 1427 /* called with rcu_read_lock */ 1428 static void qeth_l3_add_vlan_mc(struct qeth_card *card) 1429 { 1430 struct in_device *in_dev; 1431 u16 vid; 1432 1433 QETH_CARD_TEXT(card, 4, "addmcvl"); 1434 1435 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1436 return; 1437 1438 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1439 struct net_device *netdev; 1440 1441 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1442 vid); 1443 if (netdev == NULL || 1444 !(netdev->flags & IFF_UP)) 1445 continue; 1446 in_dev = __in_dev_get_rcu(netdev); 1447 if (!in_dev) 1448 continue; 1449 qeth_l3_add_mc_to_hash(card, in_dev); 1450 } 1451 } 1452 1453 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card) 1454 { 1455 struct in_device *in4_dev; 1456 1457 QETH_CARD_TEXT(card, 4, "chkmcv4"); 1458 1459 rcu_read_lock(); 1460 in4_dev = __in_dev_get_rcu(card->dev); 1461 if (in4_dev == NULL) 1462 goto unlock; 1463 qeth_l3_add_mc_to_hash(card, in4_dev); 1464 qeth_l3_add_vlan_mc(card); 1465 unlock: 1466 rcu_read_unlock(); 1467 } 1468 1469 #ifdef CONFIG_QETH_IPV6 1470 static void 1471 qeth_l3_add_mc6_to_hash(struct qeth_card *card, struct inet6_dev *in6_dev) 1472 { 1473 struct qeth_ipaddr *ipm; 1474 struct ifmcaddr6 *im6; 1475 struct qeth_ipaddr *tmp; 1476 char buf[MAX_ADDR_LEN]; 1477 1478 QETH_CARD_TEXT(card, 4, "addmc6"); 1479 1480 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1481 if (!tmp) 1482 return; 1483 1484 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { 1485 ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0); 1486 1487 memcpy(tmp->mac, buf, sizeof(tmp->mac)); 1488 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr, 1489 sizeof(struct in6_addr)); 1490 tmp->is_multicast = 1; 1491 1492 ipm = qeth_l3_ip_from_hash(card, tmp); 1493 if (ipm) { 1494 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1495 continue; 1496 } 1497 1498 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1499 if (!ipm) 1500 continue; 1501 1502 memcpy(ipm->mac, buf, OSA_ADDR_LEN); 1503 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr, 1504 sizeof(struct in6_addr)); 1505 ipm->is_multicast = 1; 1506 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1507 hash_add(card->ip_mc_htable, 1508 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1509 1510 } 1511 kfree(tmp); 1512 } 1513 1514 /* called with rcu_read_lock */ 1515 static void qeth_l3_add_vlan_mc6(struct qeth_card *card) 1516 { 1517 struct inet6_dev *in_dev; 1518 u16 vid; 1519 1520 QETH_CARD_TEXT(card, 4, "admc6vl"); 1521 1522 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1523 return; 1524 1525 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1526 struct net_device *netdev; 1527 1528 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1529 vid); 1530 if (netdev == NULL || 1531 !(netdev->flags & IFF_UP)) 1532 continue; 1533 in_dev = in6_dev_get(netdev); 1534 if (!in_dev) 1535 continue; 1536 read_lock_bh(&in_dev->lock); 1537 qeth_l3_add_mc6_to_hash(card, in_dev); 1538 read_unlock_bh(&in_dev->lock); 1539 in6_dev_put(in_dev); 1540 } 1541 } 1542 1543 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card) 1544 { 1545 struct inet6_dev *in6_dev; 1546 1547 QETH_CARD_TEXT(card, 4, "chkmcv6"); 1548 1549 if (!qeth_is_supported(card, IPA_IPV6)) 1550 return ; 1551 in6_dev = in6_dev_get(card->dev); 1552 if (!in6_dev) 1553 return; 1554 1555 rcu_read_lock(); 1556 read_lock_bh(&in6_dev->lock); 1557 qeth_l3_add_mc6_to_hash(card, in6_dev); 1558 qeth_l3_add_vlan_mc6(card); 1559 read_unlock_bh(&in6_dev->lock); 1560 rcu_read_unlock(); 1561 in6_dev_put(in6_dev); 1562 } 1563 #endif /* CONFIG_QETH_IPV6 */ 1564 1565 static void qeth_l3_free_vlan_addresses4(struct qeth_card *card, 1566 unsigned short vid) 1567 { 1568 struct in_device *in_dev; 1569 struct in_ifaddr *ifa; 1570 struct qeth_ipaddr *addr; 1571 struct net_device *netdev; 1572 1573 QETH_CARD_TEXT(card, 4, "frvaddr4"); 1574 1575 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid); 1576 if (!netdev) 1577 return; 1578 in_dev = in_dev_get(netdev); 1579 if (!in_dev) 1580 return; 1581 1582 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1583 if (!addr) 1584 goto out; 1585 1586 spin_lock_bh(&card->ip_lock); 1587 1588 for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) { 1589 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address); 1590 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask); 1591 addr->type = QETH_IP_TYPE_NORMAL; 1592 qeth_l3_delete_ip(card, addr); 1593 } 1594 1595 spin_unlock_bh(&card->ip_lock); 1596 1597 kfree(addr); 1598 out: 1599 in_dev_put(in_dev); 1600 } 1601 1602 static void qeth_l3_free_vlan_addresses6(struct qeth_card *card, 1603 unsigned short vid) 1604 { 1605 #ifdef CONFIG_QETH_IPV6 1606 struct inet6_dev *in6_dev; 1607 struct inet6_ifaddr *ifa; 1608 struct qeth_ipaddr *addr; 1609 struct net_device *netdev; 1610 1611 QETH_CARD_TEXT(card, 4, "frvaddr6"); 1612 1613 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), vid); 1614 if (!netdev) 1615 return; 1616 1617 in6_dev = in6_dev_get(netdev); 1618 if (!in6_dev) 1619 return; 1620 1621 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1622 if (!addr) 1623 goto out; 1624 1625 spin_lock_bh(&card->ip_lock); 1626 1627 list_for_each_entry(ifa, &in6_dev->addr_list, if_list) { 1628 memcpy(&addr->u.a6.addr, &ifa->addr, 1629 sizeof(struct in6_addr)); 1630 addr->u.a6.pfxlen = ifa->prefix_len; 1631 addr->type = QETH_IP_TYPE_NORMAL; 1632 qeth_l3_delete_ip(card, addr); 1633 } 1634 1635 spin_unlock_bh(&card->ip_lock); 1636 1637 kfree(addr); 1638 out: 1639 in6_dev_put(in6_dev); 1640 #endif /* CONFIG_QETH_IPV6 */ 1641 } 1642 1643 static void qeth_l3_free_vlan_addresses(struct qeth_card *card, 1644 unsigned short vid) 1645 { 1646 rcu_read_lock(); 1647 qeth_l3_free_vlan_addresses4(card, vid); 1648 qeth_l3_free_vlan_addresses6(card, vid); 1649 rcu_read_unlock(); 1650 } 1651 1652 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, 1653 __be16 proto, u16 vid) 1654 { 1655 struct qeth_card *card = dev->ml_priv; 1656 1657 set_bit(vid, card->active_vlans); 1658 return 0; 1659 } 1660 1661 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, 1662 __be16 proto, u16 vid) 1663 { 1664 struct qeth_card *card = dev->ml_priv; 1665 1666 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 1667 1668 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 1669 QETH_CARD_TEXT(card, 3, "kidREC"); 1670 return 0; 1671 } 1672 /* unregister IP addresses of vlan device */ 1673 qeth_l3_free_vlan_addresses(card, vid); 1674 clear_bit(vid, card->active_vlans); 1675 qeth_l3_set_multicast_list(card->dev); 1676 return 0; 1677 } 1678 1679 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb, 1680 struct qeth_hdr *hdr) 1681 { 1682 __u16 prot; 1683 struct iphdr *ip_hdr; 1684 unsigned char tg_addr[MAX_ADDR_LEN]; 1685 1686 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) { 1687 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 : 1688 ETH_P_IP; 1689 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) { 1690 case QETH_CAST_MULTICAST: 1691 switch (prot) { 1692 #ifdef CONFIG_QETH_IPV6 1693 case ETH_P_IPV6: 1694 ndisc_mc_map((struct in6_addr *) 1695 skb->data + 24, 1696 tg_addr, card->dev, 0); 1697 break; 1698 #endif 1699 case ETH_P_IP: 1700 ip_hdr = (struct iphdr *)skb->data; 1701 ip_eth_mc_map(ip_hdr->daddr, tg_addr); 1702 break; 1703 default: 1704 memcpy(tg_addr, card->dev->broadcast, 1705 card->dev->addr_len); 1706 } 1707 card->stats.multicast++; 1708 skb->pkt_type = PACKET_MULTICAST; 1709 break; 1710 case QETH_CAST_BROADCAST: 1711 memcpy(tg_addr, card->dev->broadcast, 1712 card->dev->addr_len); 1713 card->stats.multicast++; 1714 skb->pkt_type = PACKET_BROADCAST; 1715 break; 1716 case QETH_CAST_UNICAST: 1717 case QETH_CAST_ANYCAST: 1718 case QETH_CAST_NOCAST: 1719 default: 1720 if (card->options.sniffer) 1721 skb->pkt_type = PACKET_OTHERHOST; 1722 else 1723 skb->pkt_type = PACKET_HOST; 1724 memcpy(tg_addr, card->dev->dev_addr, 1725 card->dev->addr_len); 1726 } 1727 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR) 1728 card->dev->header_ops->create(skb, card->dev, prot, 1729 tg_addr, &hdr->hdr.l3.dest_addr[2], 1730 card->dev->addr_len); 1731 else 1732 card->dev->header_ops->create(skb, card->dev, prot, 1733 tg_addr, "FAKELL", card->dev->addr_len); 1734 } 1735 1736 skb->protocol = eth_type_trans(skb, card->dev); 1737 1738 /* copy VLAN tag from hdr into skb */ 1739 if (!card->options.sniffer && 1740 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME | 1741 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) { 1742 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ? 1743 hdr->hdr.l3.vlan_id : 1744 *((u16 *)&hdr->hdr.l3.dest_addr[12]); 1745 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag); 1746 } 1747 1748 if (card->dev->features & NETIF_F_RXCSUM) { 1749 if ((hdr->hdr.l3.ext_flags & 1750 (QETH_HDR_EXT_CSUM_HDR_REQ | 1751 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 1752 (QETH_HDR_EXT_CSUM_HDR_REQ | 1753 QETH_HDR_EXT_CSUM_TRANSP_REQ)) 1754 skb->ip_summed = CHECKSUM_UNNECESSARY; 1755 else 1756 skb->ip_summed = CHECKSUM_NONE; 1757 } else 1758 skb->ip_summed = CHECKSUM_NONE; 1759 } 1760 1761 static int qeth_l3_process_inbound_buffer(struct qeth_card *card, 1762 int budget, int *done) 1763 { 1764 int work_done = 0; 1765 struct sk_buff *skb; 1766 struct qeth_hdr *hdr; 1767 unsigned int len; 1768 __u16 magic; 1769 1770 *done = 0; 1771 WARN_ON_ONCE(!budget); 1772 while (budget) { 1773 skb = qeth_core_get_next_skb(card, 1774 &card->qdio.in_q->bufs[card->rx.b_index], 1775 &card->rx.b_element, &card->rx.e_offset, &hdr); 1776 if (!skb) { 1777 *done = 1; 1778 break; 1779 } 1780 skb->dev = card->dev; 1781 switch (hdr->hdr.l3.id) { 1782 case QETH_HEADER_TYPE_LAYER3: 1783 magic = *(__u16 *)skb->data; 1784 if ((card->info.type == QETH_CARD_TYPE_IQD) && 1785 (magic == ETH_P_AF_IUCV)) { 1786 skb->protocol = cpu_to_be16(ETH_P_AF_IUCV); 1787 skb->pkt_type = PACKET_HOST; 1788 skb->mac_header = NET_SKB_PAD; 1789 skb->dev = card->dev; 1790 len = skb->len; 1791 card->dev->header_ops->create(skb, card->dev, 0, 1792 card->dev->dev_addr, "FAKELL", 1793 card->dev->addr_len); 1794 netif_receive_skb(skb); 1795 } else { 1796 qeth_l3_rebuild_skb(card, skb, hdr); 1797 len = skb->len; 1798 napi_gro_receive(&card->napi, skb); 1799 } 1800 break; 1801 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */ 1802 skb->pkt_type = PACKET_HOST; 1803 skb->protocol = eth_type_trans(skb, skb->dev); 1804 len = skb->len; 1805 netif_receive_skb(skb); 1806 break; 1807 default: 1808 dev_kfree_skb_any(skb); 1809 QETH_CARD_TEXT(card, 3, "inbunkno"); 1810 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 1811 continue; 1812 } 1813 work_done++; 1814 budget--; 1815 card->stats.rx_packets++; 1816 card->stats.rx_bytes += len; 1817 } 1818 return work_done; 1819 } 1820 1821 static int qeth_l3_verify_vlan_dev(struct net_device *dev, 1822 struct qeth_card *card) 1823 { 1824 int rc = 0; 1825 u16 vid; 1826 1827 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1828 struct net_device *netdev; 1829 1830 rcu_read_lock(); 1831 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1832 vid); 1833 rcu_read_unlock(); 1834 if (netdev == dev) { 1835 rc = QETH_VLAN_CARD; 1836 break; 1837 } 1838 } 1839 1840 if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card)) 1841 return 0; 1842 1843 return rc; 1844 } 1845 1846 static int qeth_l3_verify_dev(struct net_device *dev) 1847 { 1848 struct qeth_card *card; 1849 int rc = 0; 1850 unsigned long flags; 1851 1852 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 1853 list_for_each_entry(card, &qeth_core_card_list.list, list) { 1854 if (card->dev == dev) { 1855 rc = QETH_REAL_CARD; 1856 break; 1857 } 1858 rc = qeth_l3_verify_vlan_dev(dev, card); 1859 if (rc) 1860 break; 1861 } 1862 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 1863 1864 return rc; 1865 } 1866 1867 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) 1868 { 1869 struct qeth_card *card = NULL; 1870 int rc; 1871 1872 rc = qeth_l3_verify_dev(dev); 1873 if (rc == QETH_REAL_CARD) 1874 card = dev->ml_priv; 1875 else if (rc == QETH_VLAN_CARD) 1876 card = vlan_dev_real_dev(dev)->ml_priv; 1877 if (card && card->options.layer2) 1878 card = NULL; 1879 if (card) 1880 QETH_CARD_TEXT_(card, 4, "%d", rc); 1881 return card ; 1882 } 1883 1884 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode) 1885 { 1886 QETH_DBF_TEXT(SETUP, 2, "stopcard"); 1887 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1888 1889 qeth_set_allowed_threads(card, 0, 1); 1890 if (card->options.sniffer && 1891 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) 1892 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1893 if (card->read.state == CH_STATE_UP && 1894 card->write.state == CH_STATE_UP && 1895 (card->state == CARD_STATE_UP)) { 1896 if (recovery_mode) 1897 qeth_l3_stop(card->dev); 1898 else { 1899 rtnl_lock(); 1900 dev_close(card->dev); 1901 rtnl_unlock(); 1902 } 1903 card->state = CARD_STATE_SOFTSETUP; 1904 } 1905 if (card->state == CARD_STATE_SOFTSETUP) { 1906 qeth_l3_clear_ip_htable(card, 1); 1907 qeth_clear_ipacmd_list(card); 1908 card->state = CARD_STATE_HARDSETUP; 1909 } 1910 if (card->state == CARD_STATE_HARDSETUP) { 1911 qeth_qdio_clear_card(card, 0); 1912 qeth_clear_qdio_buffers(card); 1913 qeth_clear_working_pool_list(card); 1914 card->state = CARD_STATE_DOWN; 1915 } 1916 if (card->state == CARD_STATE_DOWN) { 1917 qeth_clear_cmd_buffers(&card->read); 1918 qeth_clear_cmd_buffers(&card->write); 1919 } 1920 } 1921 1922 /* 1923 * test for and Switch promiscuous mode (on or off) 1924 * either for guestlan or HiperSocket Sniffer 1925 */ 1926 static void 1927 qeth_l3_handle_promisc_mode(struct qeth_card *card) 1928 { 1929 struct net_device *dev = card->dev; 1930 1931 if (((dev->flags & IFF_PROMISC) && 1932 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 1933 (!(dev->flags & IFF_PROMISC) && 1934 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 1935 return; 1936 1937 if (card->info.guestlan) { /* Guestlan trace */ 1938 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1939 qeth_setadp_promisc_mode(card); 1940 } else if (card->options.sniffer && /* HiperSockets trace */ 1941 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 1942 if (dev->flags & IFF_PROMISC) { 1943 QETH_CARD_TEXT(card, 3, "+promisc"); 1944 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE); 1945 } else { 1946 QETH_CARD_TEXT(card, 3, "-promisc"); 1947 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1948 } 1949 } 1950 } 1951 1952 static void qeth_l3_set_multicast_list(struct net_device *dev) 1953 { 1954 struct qeth_card *card = dev->ml_priv; 1955 1956 QETH_CARD_TEXT(card, 3, "setmulti"); 1957 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 1958 (card->state != CARD_STATE_UP)) 1959 return; 1960 if (!card->options.sniffer) { 1961 1962 spin_lock_bh(&card->mclock); 1963 1964 qeth_l3_mark_all_mc_to_be_deleted(card); 1965 1966 qeth_l3_add_multicast_ipv4(card); 1967 #ifdef CONFIG_QETH_IPV6 1968 qeth_l3_add_multicast_ipv6(card); 1969 #endif 1970 qeth_l3_delete_nonused_mc(card); 1971 qeth_l3_add_all_new_mc(card); 1972 1973 spin_unlock_bh(&card->mclock); 1974 1975 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1976 return; 1977 } 1978 qeth_l3_handle_promisc_mode(card); 1979 } 1980 1981 static const char *qeth_l3_arp_get_error_cause(int *rc) 1982 { 1983 switch (*rc) { 1984 case QETH_IPA_ARP_RC_FAILED: 1985 *rc = -EIO; 1986 return "operation failed"; 1987 case QETH_IPA_ARP_RC_NOTSUPP: 1988 *rc = -EOPNOTSUPP; 1989 return "operation not supported"; 1990 case QETH_IPA_ARP_RC_OUT_OF_RANGE: 1991 *rc = -EINVAL; 1992 return "argument out of range"; 1993 case QETH_IPA_ARP_RC_Q_NOTSUPP: 1994 *rc = -EOPNOTSUPP; 1995 return "query operation not supported"; 1996 case QETH_IPA_ARP_RC_Q_NO_DATA: 1997 *rc = -ENOENT; 1998 return "no query data available"; 1999 default: 2000 return "unknown error"; 2001 } 2002 } 2003 2004 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) 2005 { 2006 int tmp; 2007 int rc; 2008 2009 QETH_CARD_TEXT(card, 3, "arpstnoe"); 2010 2011 /* 2012 * currently GuestLAN only supports the ARP assist function 2013 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; 2014 * thus we say EOPNOTSUPP for this ARP function 2015 */ 2016 if (card->info.guestlan) 2017 return -EOPNOTSUPP; 2018 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2019 return -EOPNOTSUPP; 2020 } 2021 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 2022 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 2023 no_entries); 2024 if (rc) { 2025 tmp = rc; 2026 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on " 2027 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card), 2028 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2029 } 2030 return rc; 2031 } 2032 2033 static __u32 get_arp_entry_size(struct qeth_card *card, 2034 struct qeth_arp_query_data *qdata, 2035 struct qeth_arp_entrytype *type, __u8 strip_entries) 2036 { 2037 __u32 rc; 2038 __u8 is_hsi; 2039 2040 is_hsi = qdata->reply_bits == 5; 2041 if (type->ip == QETHARP_IP_ADDR_V4) { 2042 QETH_CARD_TEXT(card, 4, "arpev4"); 2043 if (strip_entries) { 2044 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : 2045 sizeof(struct qeth_arp_qi_entry7_short); 2046 } else { 2047 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : 2048 sizeof(struct qeth_arp_qi_entry7); 2049 } 2050 } else if (type->ip == QETHARP_IP_ADDR_V6) { 2051 QETH_CARD_TEXT(card, 4, "arpev6"); 2052 if (strip_entries) { 2053 rc = is_hsi ? 2054 sizeof(struct qeth_arp_qi_entry5_short_ipv6) : 2055 sizeof(struct qeth_arp_qi_entry7_short_ipv6); 2056 } else { 2057 rc = is_hsi ? 2058 sizeof(struct qeth_arp_qi_entry5_ipv6) : 2059 sizeof(struct qeth_arp_qi_entry7_ipv6); 2060 } 2061 } else { 2062 QETH_CARD_TEXT(card, 4, "arpinv"); 2063 rc = 0; 2064 } 2065 2066 return rc; 2067 } 2068 2069 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) 2070 { 2071 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || 2072 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); 2073 } 2074 2075 static int qeth_l3_arp_query_cb(struct qeth_card *card, 2076 struct qeth_reply *reply, unsigned long data) 2077 { 2078 struct qeth_ipa_cmd *cmd; 2079 struct qeth_arp_query_data *qdata; 2080 struct qeth_arp_query_info *qinfo; 2081 int i; 2082 int e; 2083 int entrybytes_done; 2084 int stripped_bytes; 2085 __u8 do_strip_entries; 2086 2087 QETH_CARD_TEXT(card, 3, "arpquecb"); 2088 2089 qinfo = (struct qeth_arp_query_info *) reply->param; 2090 cmd = (struct qeth_ipa_cmd *) data; 2091 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version); 2092 if (cmd->hdr.return_code) { 2093 QETH_CARD_TEXT(card, 4, "arpcberr"); 2094 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 2095 return 0; 2096 } 2097 if (cmd->data.setassparms.hdr.return_code) { 2098 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 2099 QETH_CARD_TEXT(card, 4, "setaperr"); 2100 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 2101 return 0; 2102 } 2103 qdata = &cmd->data.setassparms.data.query_arp; 2104 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries); 2105 2106 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; 2107 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; 2108 entrybytes_done = 0; 2109 for (e = 0; e < qdata->no_entries; ++e) { 2110 char *cur_entry; 2111 __u32 esize; 2112 struct qeth_arp_entrytype *etype; 2113 2114 cur_entry = &qdata->data + entrybytes_done; 2115 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; 2116 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) { 2117 QETH_CARD_TEXT(card, 4, "pmis"); 2118 QETH_CARD_TEXT_(card, 4, "%i", etype->ip); 2119 break; 2120 } 2121 esize = get_arp_entry_size(card, qdata, etype, 2122 do_strip_entries); 2123 QETH_CARD_TEXT_(card, 5, "esz%i", esize); 2124 if (!esize) 2125 break; 2126 2127 if ((qinfo->udata_len - qinfo->udata_offset) < esize) { 2128 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM); 2129 cmd->hdr.return_code = IPA_RC_ENOMEM; 2130 goto out_error; 2131 } 2132 2133 memcpy(qinfo->udata + qinfo->udata_offset, 2134 &qdata->data + entrybytes_done + stripped_bytes, 2135 esize); 2136 entrybytes_done += esize + stripped_bytes; 2137 qinfo->udata_offset += esize; 2138 ++qinfo->no_entries; 2139 } 2140 /* check if all replies received ... */ 2141 if (cmd->data.setassparms.hdr.seq_no < 2142 cmd->data.setassparms.hdr.number_of_replies) 2143 return 1; 2144 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries); 2145 memcpy(qinfo->udata, &qinfo->no_entries, 4); 2146 /* keep STRIP_ENTRIES flag so the user program can distinguish 2147 * stripped entries from normal ones */ 2148 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) 2149 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; 2150 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); 2151 QETH_CARD_TEXT_(card, 4, "rc%i", 0); 2152 return 0; 2153 out_error: 2154 i = 0; 2155 memcpy(qinfo->udata, &i, 4); 2156 return 0; 2157 } 2158 2159 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card, 2160 struct qeth_cmd_buffer *iob, int len, 2161 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 2162 unsigned long), 2163 void *reply_param) 2164 { 2165 QETH_CARD_TEXT(card, 4, "sendarp"); 2166 2167 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 2168 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 2169 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 2170 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 2171 reply_cb, reply_param); 2172 } 2173 2174 static int qeth_l3_query_arp_cache_info(struct qeth_card *card, 2175 enum qeth_prot_versions prot, 2176 struct qeth_arp_query_info *qinfo) 2177 { 2178 struct qeth_cmd_buffer *iob; 2179 struct qeth_ipa_cmd *cmd; 2180 int tmp; 2181 int rc; 2182 2183 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); 2184 2185 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 2186 IPA_CMD_ASS_ARP_QUERY_INFO, 2187 sizeof(struct qeth_arp_query_data) 2188 - sizeof(char), 2189 prot); 2190 if (!iob) 2191 return -ENOMEM; 2192 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2193 cmd->data.setassparms.data.query_arp.request_bits = 0x000F; 2194 cmd->data.setassparms.data.query_arp.reply_bits = 0; 2195 cmd->data.setassparms.data.query_arp.no_entries = 0; 2196 rc = qeth_l3_send_ipa_arp_cmd(card, iob, 2197 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN, 2198 qeth_l3_arp_query_cb, (void *)qinfo); 2199 if (rc) { 2200 tmp = rc; 2201 QETH_DBF_MESSAGE(2, 2202 "Error while querying ARP cache on %s: %s " 2203 "(0x%x/%d)\n", QETH_CARD_IFNAME(card), 2204 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2205 } 2206 2207 return rc; 2208 } 2209 2210 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) 2211 { 2212 struct qeth_arp_query_info qinfo = {0, }; 2213 int rc; 2214 2215 QETH_CARD_TEXT(card, 3, "arpquery"); 2216 2217 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ 2218 IPA_ARP_PROCESSING)) { 2219 QETH_CARD_TEXT(card, 3, "arpqnsup"); 2220 rc = -EOPNOTSUPP; 2221 goto out; 2222 } 2223 /* get size of userspace buffer and mask_bits -> 6 bytes */ 2224 if (copy_from_user(&qinfo, udata, 6)) { 2225 rc = -EFAULT; 2226 goto out; 2227 } 2228 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 2229 if (!qinfo.udata) { 2230 rc = -ENOMEM; 2231 goto out; 2232 } 2233 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; 2234 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo); 2235 if (rc) { 2236 if (copy_to_user(udata, qinfo.udata, 4)) 2237 rc = -EFAULT; 2238 goto free_and_out; 2239 } 2240 #ifdef CONFIG_QETH_IPV6 2241 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { 2242 /* fails in case of GuestLAN QDIO mode */ 2243 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo); 2244 } 2245 #endif 2246 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) { 2247 QETH_CARD_TEXT(card, 4, "qactf"); 2248 rc = -EFAULT; 2249 goto free_and_out; 2250 } 2251 QETH_CARD_TEXT(card, 4, "qacts"); 2252 2253 free_and_out: 2254 kfree(qinfo.udata); 2255 out: 2256 return rc; 2257 } 2258 2259 static int qeth_l3_arp_add_entry(struct qeth_card *card, 2260 struct qeth_arp_cache_entry *entry) 2261 { 2262 struct qeth_cmd_buffer *iob; 2263 char buf[16]; 2264 int tmp; 2265 int rc; 2266 2267 QETH_CARD_TEXT(card, 3, "arpadent"); 2268 2269 /* 2270 * currently GuestLAN only supports the ARP assist function 2271 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; 2272 * thus we say EOPNOTSUPP for this ARP function 2273 */ 2274 if (card->info.guestlan) 2275 return -EOPNOTSUPP; 2276 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2277 return -EOPNOTSUPP; 2278 } 2279 2280 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 2281 IPA_CMD_ASS_ARP_ADD_ENTRY, 2282 sizeof(struct qeth_arp_cache_entry), 2283 QETH_PROT_IPV4); 2284 if (!iob) 2285 return -ENOMEM; 2286 rc = qeth_send_setassparms(card, iob, 2287 sizeof(struct qeth_arp_cache_entry), 2288 (unsigned long) entry, 2289 qeth_setassparms_cb, NULL); 2290 if (rc) { 2291 tmp = rc; 2292 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); 2293 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s " 2294 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), 2295 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2296 } 2297 return rc; 2298 } 2299 2300 static int qeth_l3_arp_remove_entry(struct qeth_card *card, 2301 struct qeth_arp_cache_entry *entry) 2302 { 2303 struct qeth_cmd_buffer *iob; 2304 char buf[16] = {0, }; 2305 int tmp; 2306 int rc; 2307 2308 QETH_CARD_TEXT(card, 3, "arprment"); 2309 2310 /* 2311 * currently GuestLAN only supports the ARP assist function 2312 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY; 2313 * thus we say EOPNOTSUPP for this ARP function 2314 */ 2315 if (card->info.guestlan) 2316 return -EOPNOTSUPP; 2317 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2318 return -EOPNOTSUPP; 2319 } 2320 memcpy(buf, entry, 12); 2321 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 2322 IPA_CMD_ASS_ARP_REMOVE_ENTRY, 2323 12, 2324 QETH_PROT_IPV4); 2325 if (!iob) 2326 return -ENOMEM; 2327 rc = qeth_send_setassparms(card, iob, 2328 12, (unsigned long)buf, 2329 qeth_setassparms_cb, NULL); 2330 if (rc) { 2331 tmp = rc; 2332 memset(buf, 0, 16); 2333 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); 2334 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s" 2335 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), 2336 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2337 } 2338 return rc; 2339 } 2340 2341 static int qeth_l3_arp_flush_cache(struct qeth_card *card) 2342 { 2343 int rc; 2344 int tmp; 2345 2346 QETH_CARD_TEXT(card, 3, "arpflush"); 2347 2348 /* 2349 * currently GuestLAN only supports the ARP assist function 2350 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; 2351 * thus we say EOPNOTSUPP for this ARP function 2352 */ 2353 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD)) 2354 return -EOPNOTSUPP; 2355 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 2356 return -EOPNOTSUPP; 2357 } 2358 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 2359 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0); 2360 if (rc) { 2361 tmp = rc; 2362 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s " 2363 "(0x%x/%d)\n", QETH_CARD_IFNAME(card), 2364 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 2365 } 2366 return rc; 2367 } 2368 2369 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 2370 { 2371 struct qeth_card *card = dev->ml_priv; 2372 struct qeth_arp_cache_entry arp_entry; 2373 int rc = 0; 2374 2375 switch (cmd) { 2376 case SIOC_QETH_ARP_SET_NO_ENTRIES: 2377 if (!capable(CAP_NET_ADMIN)) { 2378 rc = -EPERM; 2379 break; 2380 } 2381 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); 2382 break; 2383 case SIOC_QETH_ARP_QUERY_INFO: 2384 if (!capable(CAP_NET_ADMIN)) { 2385 rc = -EPERM; 2386 break; 2387 } 2388 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data); 2389 break; 2390 case SIOC_QETH_ARP_ADD_ENTRY: 2391 if (!capable(CAP_NET_ADMIN)) { 2392 rc = -EPERM; 2393 break; 2394 } 2395 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data, 2396 sizeof(struct qeth_arp_cache_entry))) 2397 rc = -EFAULT; 2398 else 2399 rc = qeth_l3_arp_add_entry(card, &arp_entry); 2400 break; 2401 case SIOC_QETH_ARP_REMOVE_ENTRY: 2402 if (!capable(CAP_NET_ADMIN)) { 2403 rc = -EPERM; 2404 break; 2405 } 2406 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data, 2407 sizeof(struct qeth_arp_cache_entry))) 2408 rc = -EFAULT; 2409 else 2410 rc = qeth_l3_arp_remove_entry(card, &arp_entry); 2411 break; 2412 case SIOC_QETH_ARP_FLUSH_CACHE: 2413 if (!capable(CAP_NET_ADMIN)) { 2414 rc = -EPERM; 2415 break; 2416 } 2417 rc = qeth_l3_arp_flush_cache(card); 2418 break; 2419 default: 2420 rc = -EOPNOTSUPP; 2421 } 2422 return rc; 2423 } 2424 2425 static int qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 2426 { 2427 int cast_type = RTN_UNSPEC; 2428 struct neighbour *n = NULL; 2429 struct dst_entry *dst; 2430 2431 rcu_read_lock(); 2432 dst = skb_dst(skb); 2433 if (dst) 2434 n = dst_neigh_lookup_skb(dst, skb); 2435 if (n) { 2436 cast_type = n->type; 2437 rcu_read_unlock(); 2438 neigh_release(n); 2439 if ((cast_type == RTN_BROADCAST) || 2440 (cast_type == RTN_MULTICAST) || 2441 (cast_type == RTN_ANYCAST)) 2442 return cast_type; 2443 else 2444 return RTN_UNSPEC; 2445 } 2446 rcu_read_unlock(); 2447 2448 /* try something else */ 2449 if (be16_to_cpu(skb->protocol) == ETH_P_IPV6) 2450 return (skb_network_header(skb)[24] == 0xff) ? 2451 RTN_MULTICAST : 0; 2452 else if (be16_to_cpu(skb->protocol) == ETH_P_IP) 2453 return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ? 2454 RTN_MULTICAST : 0; 2455 /* ... */ 2456 if (!memcmp(skb->data, skb->dev->broadcast, 6)) 2457 return RTN_BROADCAST; 2458 else { 2459 u16 hdr_mac; 2460 2461 hdr_mac = *((u16 *)skb->data); 2462 /* tr multicast? */ 2463 switch (card->info.link_type) { 2464 case QETH_LINK_TYPE_HSTR: 2465 case QETH_LINK_TYPE_LANE_TR: 2466 if ((hdr_mac == QETH_TR_MAC_NC) || 2467 (hdr_mac == QETH_TR_MAC_C)) 2468 return RTN_MULTICAST; 2469 break; 2470 /* eth or so multicast? */ 2471 default: 2472 if ((hdr_mac == QETH_ETH_MAC_V4) || 2473 (hdr_mac == QETH_ETH_MAC_V6)) 2474 return RTN_MULTICAST; 2475 } 2476 } 2477 return cast_type; 2478 } 2479 2480 static void qeth_l3_fill_af_iucv_hdr(struct qeth_card *card, 2481 struct qeth_hdr *hdr, struct sk_buff *skb) 2482 { 2483 char daddr[16]; 2484 struct af_iucv_trans_hdr *iucv_hdr; 2485 2486 memset(hdr, 0, sizeof(struct qeth_hdr)); 2487 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 2488 hdr->hdr.l3.ext_flags = 0; 2489 hdr->hdr.l3.length = skb->len - ETH_HLEN; 2490 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST; 2491 2492 iucv_hdr = (struct af_iucv_trans_hdr *) (skb->data + ETH_HLEN); 2493 memset(daddr, 0, sizeof(daddr)); 2494 daddr[0] = 0xfe; 2495 daddr[1] = 0x80; 2496 memcpy(&daddr[8], iucv_hdr->destUserID, 8); 2497 memcpy(hdr->hdr.l3.dest_addr, daddr, 16); 2498 } 2499 2500 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 2501 struct sk_buff *skb, int ipv, int cast_type) 2502 { 2503 struct dst_entry *dst; 2504 2505 memset(hdr, 0, sizeof(struct qeth_hdr)); 2506 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 2507 hdr->hdr.l3.ext_flags = 0; 2508 2509 /* 2510 * before we're going to overwrite this location with next hop ip. 2511 * v6 uses passthrough, v4 sets the tag in the QDIO header. 2512 */ 2513 if (skb_vlan_tag_present(skb)) { 2514 if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD)) 2515 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME; 2516 else 2517 hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG; 2518 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); 2519 } 2520 2521 hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr); 2522 2523 rcu_read_lock(); 2524 dst = skb_dst(skb); 2525 if (ipv == 4) { 2526 struct rtable *rt = (struct rtable *) dst; 2527 __be32 *pkey = &ip_hdr(skb)->daddr; 2528 2529 if (rt && rt->rt_gateway) 2530 pkey = &rt->rt_gateway; 2531 2532 /* IPv4 */ 2533 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type); 2534 memset(hdr->hdr.l3.dest_addr, 0, 12); 2535 *((__be32 *) (&hdr->hdr.l3.dest_addr[12])) = *pkey; 2536 } else if (ipv == 6) { 2537 struct rt6_info *rt = (struct rt6_info *) dst; 2538 struct in6_addr *pkey = &ipv6_hdr(skb)->daddr; 2539 2540 if (rt && !ipv6_addr_any(&rt->rt6i_gateway)) 2541 pkey = &rt->rt6i_gateway; 2542 2543 /* IPv6 */ 2544 hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type); 2545 if (card->info.type == QETH_CARD_TYPE_IQD) 2546 hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU; 2547 memcpy(hdr->hdr.l3.dest_addr, pkey, 16); 2548 } else { 2549 if (!memcmp(skb->data + sizeof(struct qeth_hdr), 2550 skb->dev->broadcast, 6)) { 2551 /* broadcast? */ 2552 hdr->hdr.l3.flags = QETH_CAST_BROADCAST | 2553 QETH_HDR_PASSTHRU; 2554 } else { 2555 hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ? 2556 QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU : 2557 QETH_CAST_UNICAST | QETH_HDR_PASSTHRU; 2558 } 2559 } 2560 rcu_read_unlock(); 2561 } 2562 2563 static void qeth_l3_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr, 2564 struct sk_buff *skb) 2565 { 2566 struct iphdr *iph = ip_hdr(skb); 2567 2568 /* tcph->check contains already the pseudo hdr checksum 2569 * so just set the header flags 2570 */ 2571 if (iph->protocol == IPPROTO_UDP) 2572 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_UDP; 2573 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 2574 QETH_HDR_EXT_CSUM_HDR_REQ; 2575 iph->check = 0; 2576 if (card->options.performance_stats) 2577 card->perf_stats.tx_csum++; 2578 } 2579 2580 static void qeth_tso_fill_header(struct qeth_card *card, 2581 struct qeth_hdr *qhdr, struct sk_buff *skb) 2582 { 2583 struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr; 2584 struct tcphdr *tcph = tcp_hdr(skb); 2585 struct iphdr *iph = ip_hdr(skb); 2586 struct ipv6hdr *ip6h = ipv6_hdr(skb); 2587 2588 /*fix header to TSO values ...*/ 2589 hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO; 2590 hdr->hdr.hdr.l3.length = skb->len - sizeof(struct qeth_hdr_tso); 2591 /*set values which are fix for the first approach ...*/ 2592 hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso); 2593 hdr->ext.imb_hdr_no = 1; 2594 hdr->ext.hdr_type = 1; 2595 hdr->ext.hdr_version = 1; 2596 hdr->ext.hdr_len = 28; 2597 /*insert non-fix values */ 2598 hdr->ext.mss = skb_shinfo(skb)->gso_size; 2599 hdr->ext.dg_hdr_len = (__u16)(ip_hdrlen(skb) + tcp_hdrlen(skb)); 2600 hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len - 2601 sizeof(struct qeth_hdr_tso)); 2602 tcph->check = 0; 2603 if (be16_to_cpu(skb->protocol) == ETH_P_IPV6) { 2604 ip6h->payload_len = 0; 2605 tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr, 2606 0, IPPROTO_TCP, 0); 2607 } else { 2608 /*OSA want us to set these values ...*/ 2609 tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 2610 0, IPPROTO_TCP, 0); 2611 iph->tot_len = 0; 2612 iph->check = 0; 2613 } 2614 } 2615 2616 /** 2617 * qeth_l3_get_elements_no_tso() - find number of SBALEs for skb data for tso 2618 * @card: qeth card structure, to check max. elems. 2619 * @skb: SKB address 2620 * @extra_elems: extra elems needed, to check against max. 2621 * 2622 * Returns the number of pages, and thus QDIO buffer elements, needed to cover 2623 * skb data, including linear part and fragments, but excluding TCP header. 2624 * (Exclusion of TCP header distinguishes it from qeth_get_elements_no().) 2625 * Checks if the result plus extra_elems fits under the limit for the card. 2626 * Returns 0 if it does not. 2627 * Note: extra_elems is not included in the returned result. 2628 */ 2629 static int qeth_l3_get_elements_no_tso(struct qeth_card *card, 2630 struct sk_buff *skb, int extra_elems) 2631 { 2632 addr_t tcpdptr = (addr_t)tcp_hdr(skb) + tcp_hdrlen(skb); 2633 int elements = qeth_get_elements_for_range( 2634 tcpdptr, 2635 (addr_t)skb->data + skb_headlen(skb)) + 2636 qeth_get_elements_for_frags(skb); 2637 2638 if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { 2639 QETH_DBF_MESSAGE(2, 2640 "Invalid size of TSO IP packet (Number=%d / Length=%d). Discarded.\n", 2641 elements + extra_elems, skb->len); 2642 return 0; 2643 } 2644 return elements; 2645 } 2646 2647 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, 2648 struct net_device *dev) 2649 { 2650 int rc; 2651 __be16 *tag; 2652 struct qeth_hdr *hdr = NULL; 2653 int hdr_elements = 0; 2654 int elements; 2655 struct qeth_card *card = dev->ml_priv; 2656 struct sk_buff *new_skb = NULL; 2657 int ipv = qeth_get_ip_version(skb); 2658 int cast_type = qeth_l3_get_cast_type(card, skb); 2659 struct qeth_qdio_out_q *queue = 2660 card->qdio.out_qs[card->qdio.do_prio_queueing 2661 || (cast_type && card->info.is_multicast_different) ? 2662 qeth_get_priority_queue(card, skb, ipv, cast_type) : 2663 card->qdio.default_out_queue]; 2664 int tx_bytes = skb->len; 2665 unsigned int hd_len = 0; 2666 bool use_tso; 2667 int data_offset = -1; 2668 unsigned int nr_frags; 2669 2670 if (((card->info.type == QETH_CARD_TYPE_IQD) && 2671 (((card->options.cq != QETH_CQ_ENABLED) && !ipv) || 2672 ((card->options.cq == QETH_CQ_ENABLED) && 2673 (be16_to_cpu(skb->protocol) != ETH_P_AF_IUCV)))) || 2674 card->options.sniffer) 2675 goto tx_drop; 2676 2677 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 2678 card->stats.tx_carrier_errors++; 2679 goto tx_drop; 2680 } 2681 2682 if ((cast_type == RTN_BROADCAST) && 2683 (card->info.broadcast_capable == 0)) 2684 goto tx_drop; 2685 2686 if (card->options.performance_stats) { 2687 card->perf_stats.outbound_cnt++; 2688 card->perf_stats.outbound_start_time = qeth_get_micros(); 2689 } 2690 2691 /* Ignore segment size from skb_is_gso(), 1 page is always used. */ 2692 use_tso = skb_is_gso(skb) && 2693 (skb_shinfo(skb)->gso_type & SKB_GSO_TCPV4); 2694 2695 if (card->info.type == QETH_CARD_TYPE_IQD) { 2696 new_skb = skb; 2697 data_offset = ETH_HLEN; 2698 hd_len = sizeof(*hdr); 2699 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 2700 if (!hdr) 2701 goto tx_drop; 2702 hdr_elements++; 2703 } else { 2704 /* create a clone with writeable headroom */ 2705 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso) 2706 + VLAN_HLEN); 2707 if (!new_skb) 2708 goto tx_drop; 2709 2710 if (ipv == 4) { 2711 skb_pull(new_skb, ETH_HLEN); 2712 } 2713 2714 if (ipv != 4 && skb_vlan_tag_present(new_skb)) { 2715 skb_push(new_skb, VLAN_HLEN); 2716 skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4); 2717 skb_copy_to_linear_data_offset(new_skb, 4, 2718 new_skb->data + 8, 4); 2719 skb_copy_to_linear_data_offset(new_skb, 8, 2720 new_skb->data + 12, 4); 2721 tag = (__be16 *)(new_skb->data + 12); 2722 *tag = cpu_to_be16(ETH_P_8021Q); 2723 *(tag + 1) = cpu_to_be16(skb_vlan_tag_get(new_skb)); 2724 } 2725 } 2726 2727 netif_stop_queue(dev); 2728 2729 /* fix hardware limitation: as long as we do not have sbal 2730 * chaining we can not send long frag lists 2731 */ 2732 if ((card->info.type != QETH_CARD_TYPE_IQD) && 2733 ((use_tso && !qeth_l3_get_elements_no_tso(card, new_skb, 1)) || 2734 (!use_tso && !qeth_get_elements_no(card, new_skb, 0, 0)))) { 2735 int lin_rc = skb_linearize(new_skb); 2736 2737 if (card->options.performance_stats) { 2738 if (lin_rc) 2739 card->perf_stats.tx_linfail++; 2740 else 2741 card->perf_stats.tx_lin++; 2742 } 2743 if (lin_rc) 2744 goto tx_drop; 2745 } 2746 nr_frags = skb_shinfo(new_skb)->nr_frags; 2747 2748 if (use_tso) { 2749 hdr = skb_push(new_skb, sizeof(struct qeth_hdr_tso)); 2750 memset(hdr, 0, sizeof(struct qeth_hdr_tso)); 2751 qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type); 2752 qeth_tso_fill_header(card, hdr, new_skb); 2753 hdr_elements++; 2754 } else { 2755 if (data_offset < 0) { 2756 hdr = skb_push(new_skb, sizeof(struct qeth_hdr)); 2757 qeth_l3_fill_header(card, hdr, new_skb, ipv, 2758 cast_type); 2759 } else { 2760 if (be16_to_cpu(new_skb->protocol) == ETH_P_AF_IUCV) 2761 qeth_l3_fill_af_iucv_hdr(card, hdr, new_skb); 2762 else { 2763 qeth_l3_fill_header(card, hdr, new_skb, ipv, 2764 cast_type); 2765 hdr->hdr.l3.length = new_skb->len - data_offset; 2766 } 2767 } 2768 2769 if (skb->ip_summed == CHECKSUM_PARTIAL) 2770 qeth_l3_hdr_csum(card, hdr, new_skb); 2771 } 2772 2773 elements = use_tso ? 2774 qeth_l3_get_elements_no_tso(card, new_skb, hdr_elements) : 2775 qeth_get_elements_no(card, new_skb, hdr_elements, 2776 (data_offset > 0) ? data_offset : 0); 2777 if (!elements) { 2778 if (data_offset >= 0) 2779 kmem_cache_free(qeth_core_header_cache, hdr); 2780 goto tx_drop; 2781 } 2782 elements += hdr_elements; 2783 2784 if (card->info.type != QETH_CARD_TYPE_IQD) { 2785 int len; 2786 if (use_tso) { 2787 hd_len = sizeof(struct qeth_hdr_tso) + 2788 ip_hdrlen(new_skb) + tcp_hdrlen(new_skb); 2789 len = hd_len; 2790 } else { 2791 len = sizeof(struct qeth_hdr_layer3); 2792 } 2793 2794 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, len)) 2795 goto tx_drop; 2796 rc = qeth_do_send_packet(card, queue, new_skb, hdr, hd_len, 2797 hd_len, elements); 2798 } else 2799 rc = qeth_do_send_packet_fast(queue, new_skb, hdr, data_offset, 2800 hd_len); 2801 2802 if (!rc) { 2803 card->stats.tx_packets++; 2804 card->stats.tx_bytes += tx_bytes; 2805 if (new_skb != skb) 2806 dev_kfree_skb_any(skb); 2807 if (card->options.performance_stats) { 2808 if (use_tso) { 2809 card->perf_stats.large_send_bytes += tx_bytes; 2810 card->perf_stats.large_send_cnt++; 2811 } 2812 if (nr_frags) { 2813 card->perf_stats.sg_skbs_sent++; 2814 /* nr_frags + skb->data */ 2815 card->perf_stats.sg_frags_sent += nr_frags + 1; 2816 } 2817 } 2818 rc = NETDEV_TX_OK; 2819 } else { 2820 if (data_offset >= 0) 2821 kmem_cache_free(qeth_core_header_cache, hdr); 2822 2823 if (rc == -EBUSY) { 2824 if (new_skb != skb) 2825 dev_kfree_skb_any(new_skb); 2826 return NETDEV_TX_BUSY; 2827 } else 2828 goto tx_drop; 2829 } 2830 2831 netif_wake_queue(dev); 2832 if (card->options.performance_stats) 2833 card->perf_stats.outbound_time += qeth_get_micros() - 2834 card->perf_stats.outbound_start_time; 2835 return rc; 2836 2837 tx_drop: 2838 card->stats.tx_dropped++; 2839 card->stats.tx_errors++; 2840 if ((new_skb != skb) && new_skb) 2841 dev_kfree_skb_any(new_skb); 2842 dev_kfree_skb_any(skb); 2843 netif_wake_queue(dev); 2844 return NETDEV_TX_OK; 2845 } 2846 2847 static int __qeth_l3_open(struct net_device *dev) 2848 { 2849 struct qeth_card *card = dev->ml_priv; 2850 int rc = 0; 2851 2852 QETH_CARD_TEXT(card, 4, "qethopen"); 2853 if (card->state == CARD_STATE_UP) 2854 return rc; 2855 if (card->state != CARD_STATE_SOFTSETUP) 2856 return -ENODEV; 2857 card->data.state = CH_STATE_UP; 2858 card->state = CARD_STATE_UP; 2859 netif_start_queue(dev); 2860 2861 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 2862 napi_enable(&card->napi); 2863 napi_schedule(&card->napi); 2864 } else 2865 rc = -EIO; 2866 return rc; 2867 } 2868 2869 static int qeth_l3_open(struct net_device *dev) 2870 { 2871 struct qeth_card *card = dev->ml_priv; 2872 2873 QETH_CARD_TEXT(card, 5, "qethope_"); 2874 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 2875 QETH_CARD_TEXT(card, 3, "openREC"); 2876 return -ERESTARTSYS; 2877 } 2878 return __qeth_l3_open(dev); 2879 } 2880 2881 static int qeth_l3_stop(struct net_device *dev) 2882 { 2883 struct qeth_card *card = dev->ml_priv; 2884 2885 QETH_CARD_TEXT(card, 4, "qethstop"); 2886 netif_tx_disable(dev); 2887 if (card->state == CARD_STATE_UP) { 2888 card->state = CARD_STATE_SOFTSETUP; 2889 napi_disable(&card->napi); 2890 } 2891 return 0; 2892 } 2893 2894 static const struct ethtool_ops qeth_l3_ethtool_ops = { 2895 .get_link = ethtool_op_get_link, 2896 .get_strings = qeth_core_get_strings, 2897 .get_ethtool_stats = qeth_core_get_ethtool_stats, 2898 .get_sset_count = qeth_core_get_sset_count, 2899 .get_drvinfo = qeth_core_get_drvinfo, 2900 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 2901 }; 2902 2903 /* 2904 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting 2905 * NOARP on the netdevice is no option because it also turns off neighbor 2906 * solicitation. For IPv4 we install a neighbor_setup function. We don't want 2907 * arp resolution but we want the hard header (packet socket will work 2908 * e.g. tcpdump) 2909 */ 2910 static int qeth_l3_neigh_setup_noarp(struct neighbour *n) 2911 { 2912 n->nud_state = NUD_NOARP; 2913 memcpy(n->ha, "FAKELL", 6); 2914 n->output = n->ops->connected_output; 2915 return 0; 2916 } 2917 2918 static int 2919 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) 2920 { 2921 if (np->tbl->family == AF_INET) 2922 np->neigh_setup = qeth_l3_neigh_setup_noarp; 2923 2924 return 0; 2925 } 2926 2927 static const struct net_device_ops qeth_l3_netdev_ops = { 2928 .ndo_open = qeth_l3_open, 2929 .ndo_stop = qeth_l3_stop, 2930 .ndo_get_stats = qeth_get_stats, 2931 .ndo_start_xmit = qeth_l3_hard_start_xmit, 2932 .ndo_validate_addr = eth_validate_addr, 2933 .ndo_set_rx_mode = qeth_l3_set_multicast_list, 2934 .ndo_do_ioctl = qeth_do_ioctl, 2935 .ndo_change_mtu = qeth_change_mtu, 2936 .ndo_fix_features = qeth_fix_features, 2937 .ndo_set_features = qeth_set_features, 2938 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 2939 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 2940 .ndo_tx_timeout = qeth_tx_timeout, 2941 }; 2942 2943 static const struct net_device_ops qeth_l3_osa_netdev_ops = { 2944 .ndo_open = qeth_l3_open, 2945 .ndo_stop = qeth_l3_stop, 2946 .ndo_get_stats = qeth_get_stats, 2947 .ndo_start_xmit = qeth_l3_hard_start_xmit, 2948 .ndo_features_check = qeth_features_check, 2949 .ndo_validate_addr = eth_validate_addr, 2950 .ndo_set_rx_mode = qeth_l3_set_multicast_list, 2951 .ndo_do_ioctl = qeth_do_ioctl, 2952 .ndo_change_mtu = qeth_change_mtu, 2953 .ndo_fix_features = qeth_fix_features, 2954 .ndo_set_features = qeth_set_features, 2955 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 2956 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 2957 .ndo_tx_timeout = qeth_tx_timeout, 2958 .ndo_neigh_setup = qeth_l3_neigh_setup, 2959 }; 2960 2961 static int qeth_l3_setup_netdev(struct qeth_card *card) 2962 { 2963 int rc; 2964 2965 if (card->info.type == QETH_CARD_TYPE_OSD || 2966 card->info.type == QETH_CARD_TYPE_OSX) { 2967 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) || 2968 (card->info.link_type == QETH_LINK_TYPE_HSTR)) { 2969 pr_info("qeth_l3: ignoring TR device\n"); 2970 return -ENODEV; 2971 } else { 2972 card->dev = alloc_etherdev(0); 2973 if (!card->dev) 2974 return -ENODEV; 2975 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; 2976 2977 /*IPv6 address autoconfiguration stuff*/ 2978 qeth_l3_get_unique_id(card); 2979 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD)) 2980 card->dev->dev_id = card->info.unique_id & 2981 0xffff; 2982 if (!card->info.guestlan) { 2983 card->dev->hw_features = NETIF_F_SG | 2984 NETIF_F_RXCSUM | NETIF_F_IP_CSUM | 2985 NETIF_F_TSO; 2986 card->dev->vlan_features = NETIF_F_SG | 2987 NETIF_F_RXCSUM | NETIF_F_IP_CSUM | 2988 NETIF_F_TSO; 2989 card->dev->features |= NETIF_F_SG; 2990 } 2991 } 2992 } else if (card->info.type == QETH_CARD_TYPE_IQD) { 2993 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 2994 ether_setup); 2995 if (!card->dev) 2996 return -ENODEV; 2997 card->dev->flags |= IFF_NOARP; 2998 card->dev->netdev_ops = &qeth_l3_netdev_ops; 2999 rc = qeth_l3_iqd_read_initial_mac(card); 3000 if (rc) 3001 return rc; 3002 if (card->options.hsuid[0]) 3003 memcpy(card->dev->perm_addr, card->options.hsuid, 9); 3004 } else 3005 return -ENODEV; 3006 3007 card->dev->ml_priv = card; 3008 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 3009 card->dev->mtu = card->info.initial_mtu; 3010 card->dev->min_mtu = 64; 3011 card->dev->max_mtu = ETH_MAX_MTU; 3012 card->dev->ethtool_ops = &qeth_l3_ethtool_ops; 3013 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 3014 NETIF_F_HW_VLAN_CTAG_RX | 3015 NETIF_F_HW_VLAN_CTAG_FILTER; 3016 netif_keep_dst(card->dev); 3017 netif_set_gso_max_size(card->dev, (QETH_MAX_BUFFER_ELEMENTS(card) - 1) * 3018 PAGE_SIZE); 3019 3020 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 3021 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 3022 netif_carrier_off(card->dev); 3023 return register_netdev(card->dev); 3024 } 3025 3026 static const struct device_type qeth_l3_devtype = { 3027 .name = "qeth_layer3", 3028 .groups = qeth_l3_attr_groups, 3029 }; 3030 3031 static int qeth_l3_probe_device(struct ccwgroup_device *gdev) 3032 { 3033 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3034 int rc; 3035 3036 if (gdev->dev.type == &qeth_generic_devtype) { 3037 rc = qeth_l3_create_device_attributes(&gdev->dev); 3038 if (rc) 3039 return rc; 3040 } 3041 hash_init(card->ip_htable); 3042 hash_init(card->ip_mc_htable); 3043 card->options.layer2 = 0; 3044 card->info.hwtrap = 0; 3045 return 0; 3046 } 3047 3048 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) 3049 { 3050 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 3051 3052 if (cgdev->dev.type == &qeth_generic_devtype) 3053 qeth_l3_remove_device_attributes(&cgdev->dev); 3054 3055 qeth_set_allowed_threads(card, 0, 1); 3056 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 3057 3058 if (cgdev->state == CCWGROUP_ONLINE) 3059 qeth_l3_set_offline(cgdev); 3060 3061 if (card->dev) { 3062 netif_napi_del(&card->napi); 3063 unregister_netdev(card->dev); 3064 card->dev = NULL; 3065 } 3066 3067 qeth_l3_clear_ip_htable(card, 0); 3068 qeth_l3_clear_ipato_list(card); 3069 return; 3070 } 3071 3072 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) 3073 { 3074 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3075 int rc = 0; 3076 enum qeth_card_states recover_flag; 3077 3078 mutex_lock(&card->discipline_mutex); 3079 mutex_lock(&card->conf_mutex); 3080 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 3081 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 3082 3083 recover_flag = card->state; 3084 rc = qeth_core_hardsetup_card(card); 3085 if (rc) { 3086 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 3087 rc = -ENODEV; 3088 goto out_remove; 3089 } 3090 3091 if (!card->dev && qeth_l3_setup_netdev(card)) { 3092 rc = -ENODEV; 3093 goto out_remove; 3094 } 3095 3096 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 3097 if (card->info.hwtrap && 3098 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 3099 card->info.hwtrap = 0; 3100 } else 3101 card->info.hwtrap = 0; 3102 3103 card->state = CARD_STATE_HARDSETUP; 3104 memset(&card->rx, 0, sizeof(struct qeth_rx)); 3105 qeth_print_status_message(card); 3106 3107 /* softsetup */ 3108 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 3109 3110 rc = qeth_l3_setadapter_parms(card); 3111 if (rc) 3112 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 3113 if (!card->options.sniffer) { 3114 rc = qeth_l3_start_ipassists(card); 3115 if (rc) { 3116 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 3117 goto out_remove; 3118 } 3119 rc = qeth_l3_setrouting_v4(card); 3120 if (rc) 3121 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc); 3122 rc = qeth_l3_setrouting_v6(card); 3123 if (rc) 3124 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc); 3125 } 3126 netif_tx_disable(card->dev); 3127 3128 rc = qeth_init_qdio_queues(card); 3129 if (rc) { 3130 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 3131 rc = -ENODEV; 3132 goto out_remove; 3133 } 3134 card->state = CARD_STATE_SOFTSETUP; 3135 3136 qeth_set_allowed_threads(card, 0xffffffff, 0); 3137 qeth_l3_recover_ip(card); 3138 if (card->lan_online) 3139 netif_carrier_on(card->dev); 3140 else 3141 netif_carrier_off(card->dev); 3142 if (recover_flag == CARD_STATE_RECOVER) { 3143 rtnl_lock(); 3144 if (recovery_mode) 3145 __qeth_l3_open(card->dev); 3146 else 3147 dev_open(card->dev); 3148 qeth_l3_set_multicast_list(card->dev); 3149 qeth_recover_features(card->dev); 3150 rtnl_unlock(); 3151 } 3152 qeth_trace_features(card); 3153 /* let user_space know that device is online */ 3154 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 3155 mutex_unlock(&card->conf_mutex); 3156 mutex_unlock(&card->discipline_mutex); 3157 return 0; 3158 out_remove: 3159 qeth_l3_stop_card(card, 0); 3160 ccw_device_set_offline(CARD_DDEV(card)); 3161 ccw_device_set_offline(CARD_WDEV(card)); 3162 ccw_device_set_offline(CARD_RDEV(card)); 3163 qdio_free(CARD_DDEV(card)); 3164 if (recover_flag == CARD_STATE_RECOVER) 3165 card->state = CARD_STATE_RECOVER; 3166 else 3167 card->state = CARD_STATE_DOWN; 3168 mutex_unlock(&card->conf_mutex); 3169 mutex_unlock(&card->discipline_mutex); 3170 return rc; 3171 } 3172 3173 static int qeth_l3_set_online(struct ccwgroup_device *gdev) 3174 { 3175 return __qeth_l3_set_online(gdev, 0); 3176 } 3177 3178 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev, 3179 int recovery_mode) 3180 { 3181 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 3182 int rc = 0, rc2 = 0, rc3 = 0; 3183 enum qeth_card_states recover_flag; 3184 3185 mutex_lock(&card->discipline_mutex); 3186 mutex_lock(&card->conf_mutex); 3187 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 3188 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 3189 3190 if (card->dev && netif_carrier_ok(card->dev)) 3191 netif_carrier_off(card->dev); 3192 recover_flag = card->state; 3193 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 3194 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 3195 card->info.hwtrap = 1; 3196 } 3197 qeth_l3_stop_card(card, recovery_mode); 3198 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) { 3199 rtnl_lock(); 3200 call_netdevice_notifiers(NETDEV_REBOOT, card->dev); 3201 rtnl_unlock(); 3202 } 3203 rc = ccw_device_set_offline(CARD_DDEV(card)); 3204 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 3205 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 3206 if (!rc) 3207 rc = (rc2) ? rc2 : rc3; 3208 if (rc) 3209 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 3210 qdio_free(CARD_DDEV(card)); 3211 if (recover_flag == CARD_STATE_UP) 3212 card->state = CARD_STATE_RECOVER; 3213 /* let user_space know that device is offline */ 3214 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 3215 mutex_unlock(&card->conf_mutex); 3216 mutex_unlock(&card->discipline_mutex); 3217 return 0; 3218 } 3219 3220 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev) 3221 { 3222 return __qeth_l3_set_offline(cgdev, 0); 3223 } 3224 3225 static int qeth_l3_recover(void *ptr) 3226 { 3227 struct qeth_card *card; 3228 int rc = 0; 3229 3230 card = (struct qeth_card *) ptr; 3231 QETH_CARD_TEXT(card, 2, "recover1"); 3232 QETH_CARD_HEX(card, 2, &card, sizeof(void *)); 3233 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 3234 return 0; 3235 QETH_CARD_TEXT(card, 2, "recover2"); 3236 dev_warn(&card->gdev->dev, 3237 "A recovery process has been started for the device\n"); 3238 qeth_set_recovery_task(card); 3239 __qeth_l3_set_offline(card->gdev, 1); 3240 rc = __qeth_l3_set_online(card->gdev, 1); 3241 if (!rc) 3242 dev_info(&card->gdev->dev, 3243 "Device successfully recovered!\n"); 3244 else { 3245 qeth_close_dev(card); 3246 dev_warn(&card->gdev->dev, "The qeth device driver " 3247 "failed to recover an error on the device\n"); 3248 } 3249 qeth_clear_recovery_task(card); 3250 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 3251 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 3252 return 0; 3253 } 3254 3255 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev) 3256 { 3257 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3258 3259 if (card->dev) 3260 netif_device_detach(card->dev); 3261 qeth_set_allowed_threads(card, 0, 1); 3262 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 3263 if (gdev->state == CCWGROUP_OFFLINE) 3264 return 0; 3265 if (card->state == CARD_STATE_UP) { 3266 if (card->info.hwtrap) 3267 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 3268 __qeth_l3_set_offline(card->gdev, 1); 3269 } else 3270 __qeth_l3_set_offline(card->gdev, 0); 3271 return 0; 3272 } 3273 3274 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev) 3275 { 3276 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 3277 int rc = 0; 3278 3279 if (gdev->state == CCWGROUP_OFFLINE) 3280 goto out; 3281 3282 if (card->state == CARD_STATE_RECOVER) { 3283 rc = __qeth_l3_set_online(card->gdev, 1); 3284 if (rc) { 3285 rtnl_lock(); 3286 dev_close(card->dev); 3287 rtnl_unlock(); 3288 } 3289 } else 3290 rc = __qeth_l3_set_online(card->gdev, 0); 3291 out: 3292 qeth_set_allowed_threads(card, 0xffffffff, 0); 3293 if (card->dev) 3294 netif_device_attach(card->dev); 3295 if (rc) 3296 dev_warn(&card->gdev->dev, "The qeth device driver " 3297 "failed to recover an error on the device\n"); 3298 return rc; 3299 } 3300 3301 /* Returns zero if the command is successfully "consumed" */ 3302 static int qeth_l3_control_event(struct qeth_card *card, 3303 struct qeth_ipa_cmd *cmd) 3304 { 3305 return 1; 3306 } 3307 3308 struct qeth_discipline qeth_l3_discipline = { 3309 .devtype = &qeth_l3_devtype, 3310 .start_poll = qeth_qdio_start_poll, 3311 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 3312 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 3313 .process_rx_buffer = qeth_l3_process_inbound_buffer, 3314 .recover = qeth_l3_recover, 3315 .setup = qeth_l3_probe_device, 3316 .remove = qeth_l3_remove_device, 3317 .set_online = qeth_l3_set_online, 3318 .set_offline = qeth_l3_set_offline, 3319 .freeze = qeth_l3_pm_suspend, 3320 .thaw = qeth_l3_pm_resume, 3321 .restore = qeth_l3_pm_resume, 3322 .do_ioctl = qeth_l3_do_ioctl, 3323 .control_event_handler = qeth_l3_control_event, 3324 }; 3325 EXPORT_SYMBOL_GPL(qeth_l3_discipline); 3326 3327 static int qeth_l3_ip_event(struct notifier_block *this, 3328 unsigned long event, void *ptr) 3329 { 3330 3331 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 3332 struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev; 3333 struct qeth_ipaddr *addr; 3334 struct qeth_card *card; 3335 3336 if (dev_net(dev) != &init_net) 3337 return NOTIFY_DONE; 3338 3339 card = qeth_l3_get_card_from_dev(dev); 3340 if (!card) 3341 return NOTIFY_DONE; 3342 QETH_CARD_TEXT(card, 3, "ipevent"); 3343 3344 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 3345 if (addr) { 3346 addr->u.a4.addr = be32_to_cpu(ifa->ifa_address); 3347 addr->u.a4.mask = be32_to_cpu(ifa->ifa_mask); 3348 addr->type = QETH_IP_TYPE_NORMAL; 3349 } else 3350 return NOTIFY_DONE; 3351 3352 switch (event) { 3353 case NETDEV_UP: 3354 spin_lock_bh(&card->ip_lock); 3355 qeth_l3_add_ip(card, addr); 3356 spin_unlock_bh(&card->ip_lock); 3357 break; 3358 case NETDEV_DOWN: 3359 spin_lock_bh(&card->ip_lock); 3360 qeth_l3_delete_ip(card, addr); 3361 spin_unlock_bh(&card->ip_lock); 3362 break; 3363 } 3364 3365 kfree(addr); 3366 return NOTIFY_DONE; 3367 } 3368 3369 static struct notifier_block qeth_l3_ip_notifier = { 3370 qeth_l3_ip_event, 3371 NULL, 3372 }; 3373 3374 #ifdef CONFIG_QETH_IPV6 3375 /** 3376 * IPv6 event handler 3377 */ 3378 static int qeth_l3_ip6_event(struct notifier_block *this, 3379 unsigned long event, void *ptr) 3380 { 3381 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 3382 struct net_device *dev = (struct net_device *)ifa->idev->dev; 3383 struct qeth_ipaddr *addr; 3384 struct qeth_card *card; 3385 3386 card = qeth_l3_get_card_from_dev(dev); 3387 if (!card) 3388 return NOTIFY_DONE; 3389 QETH_CARD_TEXT(card, 3, "ip6event"); 3390 if (!qeth_is_supported(card, IPA_IPV6)) 3391 return NOTIFY_DONE; 3392 3393 addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 3394 if (addr) { 3395 memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr)); 3396 addr->u.a6.pfxlen = ifa->prefix_len; 3397 addr->type = QETH_IP_TYPE_NORMAL; 3398 } else 3399 return NOTIFY_DONE; 3400 3401 switch (event) { 3402 case NETDEV_UP: 3403 spin_lock_bh(&card->ip_lock); 3404 qeth_l3_add_ip(card, addr); 3405 spin_unlock_bh(&card->ip_lock); 3406 break; 3407 case NETDEV_DOWN: 3408 spin_lock_bh(&card->ip_lock); 3409 qeth_l3_delete_ip(card, addr); 3410 spin_unlock_bh(&card->ip_lock); 3411 break; 3412 } 3413 3414 kfree(addr); 3415 return NOTIFY_DONE; 3416 } 3417 3418 static struct notifier_block qeth_l3_ip6_notifier = { 3419 qeth_l3_ip6_event, 3420 NULL, 3421 }; 3422 #endif 3423 3424 static int qeth_l3_register_notifiers(void) 3425 { 3426 int rc; 3427 3428 QETH_DBF_TEXT(SETUP, 5, "regnotif"); 3429 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); 3430 if (rc) 3431 return rc; 3432 #ifdef CONFIG_QETH_IPV6 3433 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); 3434 if (rc) { 3435 unregister_inetaddr_notifier(&qeth_l3_ip_notifier); 3436 return rc; 3437 } 3438 #else 3439 pr_warn("There is no IPv6 support for the layer 3 discipline\n"); 3440 #endif 3441 return 0; 3442 } 3443 3444 static void qeth_l3_unregister_notifiers(void) 3445 { 3446 3447 QETH_DBF_TEXT(SETUP, 5, "unregnot"); 3448 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); 3449 #ifdef CONFIG_QETH_IPV6 3450 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); 3451 #endif /* QETH_IPV6 */ 3452 } 3453 3454 static int __init qeth_l3_init(void) 3455 { 3456 int rc = 0; 3457 3458 pr_info("register layer 3 discipline\n"); 3459 rc = qeth_l3_register_notifiers(); 3460 return rc; 3461 } 3462 3463 static void __exit qeth_l3_exit(void) 3464 { 3465 qeth_l3_unregister_notifiers(); 3466 pr_info("unregister layer 3 discipline\n"); 3467 } 3468 3469 module_init(qeth_l3_init); 3470 module_exit(qeth_l3_exit); 3471 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 3472 MODULE_DESCRIPTION("qeth layer 3 discipline"); 3473 MODULE_LICENSE("GPL"); 3474