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/in.h> 22 #include <linux/ipv6.h> 23 #include <linux/inetdevice.h> 24 #include <linux/igmp.h> 25 #include <linux/slab.h> 26 #include <linux/if_ether.h> 27 #include <linux/if_vlan.h> 28 #include <linux/skbuff.h> 29 30 #include <net/ip.h> 31 #include <net/arp.h> 32 #include <net/route.h> 33 #include <net/ipv6.h> 34 #include <net/ip6_route.h> 35 #include <net/iucv/af_iucv.h> 36 #include <linux/hashtable.h> 37 38 #include "qeth_l3.h" 39 40 41 static int qeth_l3_set_offline(struct ccwgroup_device *); 42 static void qeth_l3_set_rx_mode(struct net_device *dev); 43 static int qeth_l3_register_addr_entry(struct qeth_card *, 44 struct qeth_ipaddr *); 45 static int qeth_l3_deregister_addr_entry(struct qeth_card *, 46 struct qeth_ipaddr *); 47 48 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf) 49 { 50 sprintf(buf, "%pI4", addr); 51 } 52 53 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf) 54 { 55 sprintf(buf, "%pI6", addr); 56 } 57 58 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr, 59 char *buf) 60 { 61 if (proto == QETH_PROT_IPV4) 62 qeth_l3_ipaddr4_to_string(addr, buf); 63 else if (proto == QETH_PROT_IPV6) 64 qeth_l3_ipaddr6_to_string(addr, buf); 65 } 66 67 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot) 68 { 69 struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC); 70 71 if (addr) 72 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot); 73 return addr; 74 } 75 76 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card, 77 struct qeth_ipaddr *query) 78 { 79 u64 key = qeth_l3_ipaddr_hash(query); 80 struct qeth_ipaddr *addr; 81 82 if (query->is_multicast) { 83 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key) 84 if (qeth_l3_addr_match_ip(addr, query)) 85 return addr; 86 } else { 87 hash_for_each_possible(card->ip_htable, addr, hnode, key) 88 if (qeth_l3_addr_match_ip(addr, query)) 89 return addr; 90 } 91 return NULL; 92 } 93 94 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len) 95 { 96 int i, j; 97 u8 octet; 98 99 for (i = 0; i < len; ++i) { 100 octet = addr[i]; 101 for (j = 7; j >= 0; --j) { 102 bits[i*8 + j] = octet & 1; 103 octet >>= 1; 104 } 105 } 106 } 107 108 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, 109 struct qeth_ipaddr *addr) 110 { 111 struct qeth_ipato_entry *ipatoe; 112 u8 addr_bits[128] = {0, }; 113 u8 ipatoe_bits[128] = {0, }; 114 int rc = 0; 115 116 if (!card->ipato.enabled) 117 return false; 118 if (addr->type != QETH_IP_TYPE_NORMAL) 119 return false; 120 121 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits, 122 (addr->proto == QETH_PROT_IPV4)? 4:16); 123 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 124 if (addr->proto != ipatoe->proto) 125 continue; 126 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits, 127 (ipatoe->proto == QETH_PROT_IPV4) ? 128 4 : 16); 129 if (addr->proto == QETH_PROT_IPV4) 130 rc = !memcmp(addr_bits, ipatoe_bits, 131 min(32, ipatoe->mask_bits)); 132 else 133 rc = !memcmp(addr_bits, ipatoe_bits, 134 min(128, ipatoe->mask_bits)); 135 if (rc) 136 break; 137 } 138 /* invert? */ 139 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4) 140 rc = !rc; 141 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6) 142 rc = !rc; 143 144 return rc; 145 } 146 147 static int qeth_l3_delete_ip(struct qeth_card *card, 148 struct qeth_ipaddr *tmp_addr) 149 { 150 int rc = 0; 151 struct qeth_ipaddr *addr; 152 153 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 154 QETH_CARD_TEXT(card, 2, "delrxip"); 155 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 156 QETH_CARD_TEXT(card, 2, "delvipa"); 157 else 158 QETH_CARD_TEXT(card, 2, "delip"); 159 160 if (tmp_addr->proto == QETH_PROT_IPV4) 161 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 162 else { 163 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 164 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 165 } 166 167 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 168 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr)) 169 return -ENOENT; 170 171 addr->ref_counter--; 172 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0) 173 return rc; 174 if (addr->in_progress) 175 return -EINPROGRESS; 176 177 if (qeth_card_hw_is_reachable(card)) 178 rc = qeth_l3_deregister_addr_entry(card, addr); 179 180 hash_del(&addr->hnode); 181 kfree(addr); 182 183 return rc; 184 } 185 186 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) 187 { 188 int rc = 0; 189 struct qeth_ipaddr *addr; 190 char buf[40]; 191 192 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 193 QETH_CARD_TEXT(card, 2, "addrxip"); 194 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 195 QETH_CARD_TEXT(card, 2, "addvipa"); 196 else 197 QETH_CARD_TEXT(card, 2, "addip"); 198 199 if (tmp_addr->proto == QETH_PROT_IPV4) 200 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 201 else { 202 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 203 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 204 } 205 206 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 207 if (addr) { 208 if (tmp_addr->type != QETH_IP_TYPE_NORMAL) 209 return -EADDRINUSE; 210 if (qeth_l3_addr_match_all(addr, tmp_addr)) { 211 addr->ref_counter++; 212 return 0; 213 } 214 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u, 215 buf); 216 dev_warn(&card->gdev->dev, 217 "Registering IP address %s failed\n", buf); 218 return -EADDRINUSE; 219 } else { 220 addr = qeth_l3_get_addr_buffer(tmp_addr->proto); 221 if (!addr) 222 return -ENOMEM; 223 224 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr)); 225 addr->ref_counter = 1; 226 227 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) { 228 QETH_CARD_TEXT(card, 2, "tkovaddr"); 229 addr->ipato = 1; 230 } 231 hash_add(card->ip_htable, &addr->hnode, 232 qeth_l3_ipaddr_hash(addr)); 233 234 if (!qeth_card_hw_is_reachable(card)) { 235 addr->disp_flag = QETH_DISP_ADDR_ADD; 236 return 0; 237 } 238 239 /* qeth_l3_register_addr_entry can go to sleep 240 * if we add a IPV4 addr. It is caused by the reason 241 * that SETIP ipa cmd starts ARP staff for IPV4 addr. 242 * Thus we should unlock spinlock, and make a protection 243 * using in_progress variable to indicate that there is 244 * an hardware operation with this IPV4 address 245 */ 246 if (addr->proto == QETH_PROT_IPV4) { 247 addr->in_progress = 1; 248 mutex_unlock(&card->ip_lock); 249 rc = qeth_l3_register_addr_entry(card, addr); 250 mutex_lock(&card->ip_lock); 251 addr->in_progress = 0; 252 } else 253 rc = qeth_l3_register_addr_entry(card, addr); 254 255 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) { 256 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 257 if (addr->ref_counter < 1) { 258 qeth_l3_deregister_addr_entry(card, addr); 259 hash_del(&addr->hnode); 260 kfree(addr); 261 } 262 } else { 263 hash_del(&addr->hnode); 264 kfree(addr); 265 } 266 } 267 return rc; 268 } 269 270 static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr, 271 bool add) 272 { 273 int rc; 274 275 mutex_lock(&card->ip_lock); 276 rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr); 277 mutex_unlock(&card->ip_lock); 278 279 return rc; 280 } 281 282 static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card) 283 { 284 struct qeth_ipaddr *addr; 285 struct hlist_node *tmp; 286 int i; 287 288 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 289 hash_del(&addr->hnode); 290 kfree(addr); 291 } 292 } 293 294 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) 295 { 296 struct qeth_ipaddr *addr; 297 struct hlist_node *tmp; 298 int i; 299 300 QETH_CARD_TEXT(card, 4, "clearip"); 301 302 mutex_lock(&card->ip_lock); 303 304 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 305 if (!recover) { 306 hash_del(&addr->hnode); 307 kfree(addr); 308 continue; 309 } 310 addr->disp_flag = QETH_DISP_ADDR_ADD; 311 } 312 313 mutex_unlock(&card->ip_lock); 314 } 315 316 static void qeth_l3_recover_ip(struct qeth_card *card) 317 { 318 struct qeth_ipaddr *addr; 319 struct hlist_node *tmp; 320 int i; 321 int rc; 322 323 QETH_CARD_TEXT(card, 4, "recovrip"); 324 325 mutex_lock(&card->ip_lock); 326 327 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 328 if (addr->disp_flag == QETH_DISP_ADDR_ADD) { 329 if (addr->proto == QETH_PROT_IPV4) { 330 addr->in_progress = 1; 331 mutex_unlock(&card->ip_lock); 332 rc = qeth_l3_register_addr_entry(card, addr); 333 mutex_lock(&card->ip_lock); 334 addr->in_progress = 0; 335 } else 336 rc = qeth_l3_register_addr_entry(card, addr); 337 338 if (!rc) { 339 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 340 if (addr->ref_counter < 1) 341 qeth_l3_delete_ip(card, addr); 342 } else { 343 hash_del(&addr->hnode); 344 kfree(addr); 345 } 346 } 347 } 348 349 mutex_unlock(&card->ip_lock); 350 } 351 352 static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply, 353 unsigned long data) 354 { 355 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 356 357 switch (cmd->hdr.return_code) { 358 case IPA_RC_SUCCESS: 359 return 0; 360 case IPA_RC_DUPLICATE_IP_ADDRESS: 361 return -EADDRINUSE; 362 case IPA_RC_MC_ADDR_NOT_FOUND: 363 return -ENOENT; 364 case IPA_RC_LAN_OFFLINE: 365 return -ENETDOWN; 366 default: 367 return -EIO; 368 } 369 } 370 371 static int qeth_l3_send_setdelmc(struct qeth_card *card, 372 struct qeth_ipaddr *addr, int ipacmd) 373 { 374 struct qeth_cmd_buffer *iob; 375 struct qeth_ipa_cmd *cmd; 376 377 QETH_CARD_TEXT(card, 4, "setdelmc"); 378 379 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto, 380 IPA_DATA_SIZEOF(setdelipm)); 381 if (!iob) 382 return -ENOMEM; 383 cmd = __ipa_cmd(iob); 384 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac); 385 if (addr->proto == QETH_PROT_IPV6) 386 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr, 387 sizeof(struct in6_addr)); 388 else 389 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4); 390 391 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); 392 } 393 394 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len) 395 { 396 int i, j; 397 for (i = 0; i < 16; i++) { 398 j = (len) - (i * 8); 399 if (j >= 8) 400 netmask[i] = 0xff; 401 else if (j > 0) 402 netmask[i] = (u8)(0xFF00 >> j); 403 else 404 netmask[i] = 0; 405 } 406 } 407 408 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set) 409 { 410 switch (addr->type) { 411 case QETH_IP_TYPE_RXIP: 412 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 413 case QETH_IP_TYPE_VIPA: 414 return (set) ? QETH_IPA_SETIP_VIPA_FLAG : 415 QETH_IPA_DELIP_VIPA_FLAG; 416 default: 417 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 418 } 419 } 420 421 static int qeth_l3_send_setdelip(struct qeth_card *card, 422 struct qeth_ipaddr *addr, 423 enum qeth_ipa_cmds ipacmd) 424 { 425 struct qeth_cmd_buffer *iob; 426 struct qeth_ipa_cmd *cmd; 427 __u8 netmask[16]; 428 u32 flags; 429 430 QETH_CARD_TEXT(card, 4, "setdelip"); 431 432 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto, 433 IPA_DATA_SIZEOF(setdelip6)); 434 if (!iob) 435 return -ENOMEM; 436 cmd = __ipa_cmd(iob); 437 438 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP); 439 QETH_CARD_TEXT_(card, 4, "flags%02X", flags); 440 441 if (addr->proto == QETH_PROT_IPV6) { 442 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr, 443 sizeof(struct in6_addr)); 444 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen); 445 memcpy(cmd->data.setdelip6.mask, netmask, 446 sizeof(struct in6_addr)); 447 cmd->data.setdelip6.flags = flags; 448 } else { 449 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4); 450 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4); 451 cmd->data.setdelip4.flags = flags; 452 } 453 454 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); 455 } 456 457 static int qeth_l3_send_setrouting(struct qeth_card *card, 458 enum qeth_routing_types type, enum qeth_prot_versions prot) 459 { 460 int rc; 461 struct qeth_ipa_cmd *cmd; 462 struct qeth_cmd_buffer *iob; 463 464 QETH_CARD_TEXT(card, 4, "setroutg"); 465 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot, 466 IPA_DATA_SIZEOF(setrtg)); 467 if (!iob) 468 return -ENOMEM; 469 cmd = __ipa_cmd(iob); 470 cmd->data.setrtg.type = (type); 471 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 472 473 return rc; 474 } 475 476 static int qeth_l3_correct_routing_type(struct qeth_card *card, 477 enum qeth_routing_types *type, enum qeth_prot_versions prot) 478 { 479 if (IS_IQD(card)) { 480 switch (*type) { 481 case NO_ROUTER: 482 case PRIMARY_CONNECTOR: 483 case SECONDARY_CONNECTOR: 484 case MULTICAST_ROUTER: 485 return 0; 486 default: 487 goto out_inval; 488 } 489 } else { 490 switch (*type) { 491 case NO_ROUTER: 492 case PRIMARY_ROUTER: 493 case SECONDARY_ROUTER: 494 return 0; 495 case MULTICAST_ROUTER: 496 if (qeth_is_ipafunc_supported(card, prot, 497 IPA_OSA_MC_ROUTER)) 498 return 0; 499 default: 500 goto out_inval; 501 } 502 } 503 out_inval: 504 *type = NO_ROUTER; 505 return -EINVAL; 506 } 507 508 int qeth_l3_setrouting_v4(struct qeth_card *card) 509 { 510 int rc; 511 512 QETH_CARD_TEXT(card, 3, "setrtg4"); 513 514 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, 515 QETH_PROT_IPV4); 516 if (rc) 517 return rc; 518 519 rc = qeth_l3_send_setrouting(card, card->options.route4.type, 520 QETH_PROT_IPV4); 521 if (rc) { 522 card->options.route4.type = NO_ROUTER; 523 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 524 rc, CARD_DEVID(card)); 525 } 526 return rc; 527 } 528 529 int qeth_l3_setrouting_v6(struct qeth_card *card) 530 { 531 int rc = 0; 532 533 QETH_CARD_TEXT(card, 3, "setrtg6"); 534 535 if (!qeth_is_supported(card, IPA_IPV6)) 536 return 0; 537 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type, 538 QETH_PROT_IPV6); 539 if (rc) 540 return rc; 541 542 rc = qeth_l3_send_setrouting(card, card->options.route6.type, 543 QETH_PROT_IPV6); 544 if (rc) { 545 card->options.route6.type = NO_ROUTER; 546 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 547 rc, CARD_DEVID(card)); 548 } 549 return rc; 550 } 551 552 /* 553 * IP address takeover related functions 554 */ 555 556 /** 557 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs. 558 * 559 * Caller must hold ip_lock. 560 */ 561 void qeth_l3_update_ipato(struct qeth_card *card) 562 { 563 struct qeth_ipaddr *addr; 564 unsigned int i; 565 566 hash_for_each(card->ip_htable, i, addr, hnode) { 567 if (addr->type != QETH_IP_TYPE_NORMAL) 568 continue; 569 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr); 570 } 571 } 572 573 static void qeth_l3_clear_ipato_list(struct qeth_card *card) 574 { 575 struct qeth_ipato_entry *ipatoe, *tmp; 576 577 mutex_lock(&card->ip_lock); 578 579 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 580 list_del(&ipatoe->entry); 581 kfree(ipatoe); 582 } 583 584 qeth_l3_update_ipato(card); 585 mutex_unlock(&card->ip_lock); 586 } 587 588 int qeth_l3_add_ipato_entry(struct qeth_card *card, 589 struct qeth_ipato_entry *new) 590 { 591 struct qeth_ipato_entry *ipatoe; 592 int rc = 0; 593 594 QETH_CARD_TEXT(card, 2, "addipato"); 595 596 mutex_lock(&card->ip_lock); 597 598 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 599 if (ipatoe->proto != new->proto) 600 continue; 601 if (!memcmp(ipatoe->addr, new->addr, 602 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) && 603 (ipatoe->mask_bits == new->mask_bits)) { 604 rc = -EEXIST; 605 break; 606 } 607 } 608 609 if (!rc) { 610 list_add_tail(&new->entry, &card->ipato.entries); 611 qeth_l3_update_ipato(card); 612 } 613 614 mutex_unlock(&card->ip_lock); 615 616 return rc; 617 } 618 619 int qeth_l3_del_ipato_entry(struct qeth_card *card, 620 enum qeth_prot_versions proto, u8 *addr, 621 int mask_bits) 622 { 623 struct qeth_ipato_entry *ipatoe, *tmp; 624 int rc = -ENOENT; 625 626 QETH_CARD_TEXT(card, 2, "delipato"); 627 628 mutex_lock(&card->ip_lock); 629 630 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 631 if (ipatoe->proto != proto) 632 continue; 633 if (!memcmp(ipatoe->addr, addr, 634 (proto == QETH_PROT_IPV4)? 4:16) && 635 (ipatoe->mask_bits == mask_bits)) { 636 list_del(&ipatoe->entry); 637 qeth_l3_update_ipato(card); 638 kfree(ipatoe); 639 rc = 0; 640 } 641 } 642 643 mutex_unlock(&card->ip_lock); 644 return rc; 645 } 646 647 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip, 648 enum qeth_ip_types type, 649 enum qeth_prot_versions proto) 650 { 651 struct qeth_ipaddr addr; 652 653 qeth_l3_init_ipaddr(&addr, type, proto); 654 if (proto == QETH_PROT_IPV4) 655 memcpy(&addr.u.a4.addr, ip, 4); 656 else 657 memcpy(&addr.u.a6.addr, ip, 16); 658 659 return qeth_l3_modify_ip(card, &addr, add); 660 } 661 662 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add) 663 { 664 struct qeth_ipaddr addr; 665 unsigned int i; 666 667 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 668 addr.u.a6.addr.s6_addr[0] = 0xfe; 669 addr.u.a6.addr.s6_addr[1] = 0x80; 670 for (i = 0; i < 8; i++) 671 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i]; 672 673 return qeth_l3_modify_ip(card, &addr, add); 674 } 675 676 static int qeth_l3_register_addr_entry(struct qeth_card *card, 677 struct qeth_ipaddr *addr) 678 { 679 char buf[50]; 680 int rc = 0; 681 int cnt = 3; 682 683 if (card->options.sniffer) 684 return 0; 685 686 if (addr->proto == QETH_PROT_IPV4) { 687 QETH_CARD_TEXT(card, 2, "setaddr4"); 688 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 689 } else if (addr->proto == QETH_PROT_IPV6) { 690 QETH_CARD_TEXT(card, 2, "setaddr6"); 691 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 692 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 693 } else { 694 QETH_CARD_TEXT(card, 2, "setaddr?"); 695 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 696 } 697 do { 698 if (addr->is_multicast) 699 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); 700 else 701 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP); 702 if (rc) 703 QETH_CARD_TEXT(card, 2, "failed"); 704 } while ((--cnt > 0) && rc); 705 if (rc) { 706 QETH_CARD_TEXT(card, 2, "FAILED"); 707 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); 708 dev_warn(&card->gdev->dev, 709 "Registering IP address %s failed\n", buf); 710 } 711 return rc; 712 } 713 714 static int qeth_l3_deregister_addr_entry(struct qeth_card *card, 715 struct qeth_ipaddr *addr) 716 { 717 int rc = 0; 718 719 if (card->options.sniffer) 720 return 0; 721 722 if (addr->proto == QETH_PROT_IPV4) { 723 QETH_CARD_TEXT(card, 2, "deladdr4"); 724 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 725 } else if (addr->proto == QETH_PROT_IPV6) { 726 QETH_CARD_TEXT(card, 2, "deladdr6"); 727 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 728 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 729 } else { 730 QETH_CARD_TEXT(card, 2, "deladdr?"); 731 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 732 } 733 if (addr->is_multicast) 734 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); 735 else 736 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP); 737 if (rc) 738 QETH_CARD_TEXT(card, 2, "failed"); 739 740 return rc; 741 } 742 743 static int qeth_l3_setadapter_parms(struct qeth_card *card) 744 { 745 int rc = 0; 746 747 QETH_CARD_TEXT(card, 2, "setadprm"); 748 749 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { 750 rc = qeth_setadpparms_change_macaddr(card); 751 if (rc) 752 dev_warn(&card->gdev->dev, "Reading the adapter MAC" 753 " address failed\n"); 754 } 755 756 return rc; 757 } 758 759 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) 760 { 761 int rc; 762 763 QETH_CARD_TEXT(card, 3, "ipaarp"); 764 765 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 766 dev_info(&card->gdev->dev, 767 "ARP processing not supported on %s!\n", 768 QETH_CARD_IFNAME(card)); 769 return 0; 770 } 771 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 772 IPA_CMD_ASS_START, NULL); 773 if (rc) { 774 dev_warn(&card->gdev->dev, 775 "Starting ARP processing support for %s failed\n", 776 QETH_CARD_IFNAME(card)); 777 } 778 return rc; 779 } 780 781 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 782 { 783 int rc; 784 785 QETH_CARD_TEXT(card, 3, "stsrcmac"); 786 787 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { 788 dev_info(&card->gdev->dev, 789 "Inbound source MAC-address not supported on %s\n", 790 QETH_CARD_IFNAME(card)); 791 return -EOPNOTSUPP; 792 } 793 794 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC, 795 IPA_CMD_ASS_START, NULL); 796 if (rc) 797 dev_warn(&card->gdev->dev, 798 "Starting source MAC-address support for %s failed\n", 799 QETH_CARD_IFNAME(card)); 800 return rc; 801 } 802 803 static int qeth_l3_start_ipa_vlan(struct qeth_card *card) 804 { 805 int rc = 0; 806 807 QETH_CARD_TEXT(card, 3, "strtvlan"); 808 809 if (!qeth_is_supported(card, IPA_FULL_VLAN)) { 810 dev_info(&card->gdev->dev, 811 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card)); 812 return -EOPNOTSUPP; 813 } 814 815 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO, 816 IPA_CMD_ASS_START, NULL); 817 if (rc) { 818 dev_warn(&card->gdev->dev, 819 "Starting VLAN support for %s failed\n", 820 QETH_CARD_IFNAME(card)); 821 } else { 822 dev_info(&card->gdev->dev, "VLAN enabled\n"); 823 } 824 return rc; 825 } 826 827 static int qeth_l3_start_ipa_multicast(struct qeth_card *card) 828 { 829 int rc; 830 831 QETH_CARD_TEXT(card, 3, "stmcast"); 832 833 if (!qeth_is_supported(card, IPA_MULTICASTING)) { 834 dev_info(&card->gdev->dev, 835 "Multicast not supported on %s\n", 836 QETH_CARD_IFNAME(card)); 837 return -EOPNOTSUPP; 838 } 839 840 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING, 841 IPA_CMD_ASS_START, NULL); 842 if (rc) { 843 dev_warn(&card->gdev->dev, 844 "Starting multicast support for %s failed\n", 845 QETH_CARD_IFNAME(card)); 846 } else { 847 dev_info(&card->gdev->dev, "Multicast enabled\n"); 848 card->dev->flags |= IFF_MULTICAST; 849 } 850 return rc; 851 } 852 853 static int qeth_l3_softsetup_ipv6(struct qeth_card *card) 854 { 855 u32 ipv6_data = 3; 856 int rc; 857 858 QETH_CARD_TEXT(card, 3, "softipv6"); 859 860 if (IS_IQD(card)) 861 goto out; 862 863 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START, 864 &ipv6_data); 865 if (rc) { 866 dev_err(&card->gdev->dev, 867 "Activating IPv6 support for %s failed\n", 868 QETH_CARD_IFNAME(card)); 869 return rc; 870 } 871 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START, 872 NULL); 873 if (rc) { 874 dev_err(&card->gdev->dev, 875 "Activating IPv6 support for %s failed\n", 876 QETH_CARD_IFNAME(card)); 877 return rc; 878 } 879 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU, 880 IPA_CMD_ASS_START, NULL); 881 if (rc) { 882 dev_warn(&card->gdev->dev, 883 "Enabling the passthrough mode for %s failed\n", 884 QETH_CARD_IFNAME(card)); 885 return rc; 886 } 887 out: 888 dev_info(&card->gdev->dev, "IPV6 enabled\n"); 889 return 0; 890 } 891 892 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) 893 { 894 QETH_CARD_TEXT(card, 3, "strtipv6"); 895 896 if (!qeth_is_supported(card, IPA_IPV6)) { 897 dev_info(&card->gdev->dev, 898 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card)); 899 return 0; 900 } 901 return qeth_l3_softsetup_ipv6(card); 902 } 903 904 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) 905 { 906 u32 filter_data = 1; 907 int rc; 908 909 QETH_CARD_TEXT(card, 3, "stbrdcst"); 910 card->info.broadcast_capable = 0; 911 if (!qeth_is_supported(card, IPA_FILTERING)) { 912 dev_info(&card->gdev->dev, 913 "Broadcast not supported on %s\n", 914 QETH_CARD_IFNAME(card)); 915 rc = -EOPNOTSUPP; 916 goto out; 917 } 918 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 919 IPA_CMD_ASS_START, NULL); 920 if (rc) { 921 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for " 922 "%s failed\n", QETH_CARD_IFNAME(card)); 923 goto out; 924 } 925 926 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 927 IPA_CMD_ASS_CONFIGURE, &filter_data); 928 if (rc) { 929 dev_warn(&card->gdev->dev, 930 "Setting up broadcast filtering for %s failed\n", 931 QETH_CARD_IFNAME(card)); 932 goto out; 933 } 934 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; 935 dev_info(&card->gdev->dev, "Broadcast enabled\n"); 936 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 937 IPA_CMD_ASS_ENABLE, &filter_data); 938 if (rc) { 939 dev_warn(&card->gdev->dev, "Setting up broadcast echo " 940 "filtering for %s failed\n", QETH_CARD_IFNAME(card)); 941 goto out; 942 } 943 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; 944 out: 945 if (card->info.broadcast_capable) 946 card->dev->flags |= IFF_BROADCAST; 947 else 948 card->dev->flags &= ~IFF_BROADCAST; 949 return rc; 950 } 951 952 static int qeth_l3_start_ipassists(struct qeth_card *card) 953 { 954 QETH_CARD_TEXT(card, 3, "strtipas"); 955 956 if (qeth_set_access_ctrl_online(card, 0)) 957 return -EIO; 958 qeth_l3_start_ipa_arp_processing(card); /* go on*/ 959 qeth_l3_start_ipa_source_mac(card); /* go on*/ 960 qeth_l3_start_ipa_vlan(card); /* go on*/ 961 qeth_l3_start_ipa_multicast(card); /* go on*/ 962 qeth_l3_start_ipa_ipv6(card); /* go on*/ 963 qeth_l3_start_ipa_broadcast(card); /* go on*/ 964 return 0; 965 } 966 967 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, 968 struct qeth_reply *reply, unsigned long data) 969 { 970 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 971 972 if (cmd->hdr.return_code) 973 return -EIO; 974 975 ether_addr_copy(card->dev->dev_addr, 976 cmd->data.create_destroy_addr.unique_id); 977 return 0; 978 } 979 980 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) 981 { 982 int rc = 0; 983 struct qeth_cmd_buffer *iob; 984 struct qeth_ipa_cmd *cmd; 985 986 QETH_CARD_TEXT(card, 2, "hsrmac"); 987 988 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6, 989 IPA_DATA_SIZEOF(create_destroy_addr)); 990 if (!iob) 991 return -ENOMEM; 992 cmd = __ipa_cmd(iob); 993 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 994 card->info.unique_id; 995 996 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, 997 NULL); 998 return rc; 999 } 1000 1001 static int qeth_l3_get_unique_id_cb(struct qeth_card *card, 1002 struct qeth_reply *reply, unsigned long data) 1003 { 1004 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1005 1006 if (cmd->hdr.return_code == 0) { 1007 card->info.unique_id = *((__u16 *) 1008 &cmd->data.create_destroy_addr.unique_id[6]); 1009 return 0; 1010 } 1011 1012 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1013 UNIQUE_ID_NOT_BY_CARD; 1014 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n"); 1015 return -EIO; 1016 } 1017 1018 static int qeth_l3_get_unique_id(struct qeth_card *card) 1019 { 1020 int rc = 0; 1021 struct qeth_cmd_buffer *iob; 1022 struct qeth_ipa_cmd *cmd; 1023 1024 QETH_CARD_TEXT(card, 2, "guniqeid"); 1025 1026 if (!qeth_is_supported(card, IPA_IPV6)) { 1027 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1028 UNIQUE_ID_NOT_BY_CARD; 1029 return 0; 1030 } 1031 1032 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6, 1033 IPA_DATA_SIZEOF(create_destroy_addr)); 1034 if (!iob) 1035 return -ENOMEM; 1036 cmd = __ipa_cmd(iob); 1037 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 1038 card->info.unique_id; 1039 1040 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL); 1041 return rc; 1042 } 1043 1044 static int 1045 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, 1046 unsigned long data) 1047 { 1048 struct qeth_ipa_cmd *cmd; 1049 __u16 rc; 1050 1051 QETH_CARD_TEXT(card, 2, "diastrcb"); 1052 1053 cmd = (struct qeth_ipa_cmd *)data; 1054 rc = cmd->hdr.return_code; 1055 if (rc) 1056 QETH_CARD_TEXT_(card, 2, "dxter%x", rc); 1057 switch (cmd->data.diagass.action) { 1058 case QETH_DIAGS_CMD_TRACE_QUERY: 1059 break; 1060 case QETH_DIAGS_CMD_TRACE_DISABLE: 1061 switch (rc) { 1062 case 0: 1063 case IPA_RC_INVALID_SUBCMD: 1064 card->info.promisc_mode = SET_PROMISC_MODE_OFF; 1065 dev_info(&card->gdev->dev, "The HiperSockets network " 1066 "traffic analyzer is deactivated\n"); 1067 break; 1068 default: 1069 break; 1070 } 1071 break; 1072 case QETH_DIAGS_CMD_TRACE_ENABLE: 1073 switch (rc) { 1074 case 0: 1075 card->info.promisc_mode = SET_PROMISC_MODE_ON; 1076 dev_info(&card->gdev->dev, "The HiperSockets network " 1077 "traffic analyzer is activated\n"); 1078 break; 1079 case IPA_RC_HARDWARE_AUTH_ERROR: 1080 dev_warn(&card->gdev->dev, "The device is not " 1081 "authorized to run as a HiperSockets network " 1082 "traffic analyzer\n"); 1083 break; 1084 case IPA_RC_TRACE_ALREADY_ACTIVE: 1085 dev_warn(&card->gdev->dev, "A HiperSockets " 1086 "network traffic analyzer is already " 1087 "active in the HiperSockets LAN\n"); 1088 break; 1089 default: 1090 break; 1091 } 1092 break; 1093 default: 1094 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n", 1095 cmd->data.diagass.action, CARD_DEVID(card)); 1096 } 1097 1098 return rc ? -EIO : 0; 1099 } 1100 1101 static int 1102 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) 1103 { 1104 struct qeth_cmd_buffer *iob; 1105 struct qeth_ipa_cmd *cmd; 1106 1107 QETH_CARD_TEXT(card, 2, "diagtrac"); 1108 1109 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0); 1110 if (!iob) 1111 return -ENOMEM; 1112 cmd = __ipa_cmd(iob); 1113 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; 1114 cmd->data.diagass.action = diags_cmd; 1115 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL); 1116 } 1117 1118 static void 1119 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev) 1120 { 1121 struct ip_mc_list *im4; 1122 struct qeth_ipaddr *tmp, *ipm; 1123 1124 QETH_CARD_TEXT(card, 4, "addmc"); 1125 1126 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1127 if (!tmp) 1128 return; 1129 1130 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL; 1131 im4 = rcu_dereference(im4->next_rcu)) { 1132 ip_eth_mc_map(im4->multiaddr, tmp->mac); 1133 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr); 1134 tmp->is_multicast = 1; 1135 1136 ipm = qeth_l3_find_addr_by_ip(card, tmp); 1137 if (ipm) { 1138 /* for mcast, by-IP match means full match */ 1139 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1140 } else { 1141 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1142 if (!ipm) 1143 continue; 1144 ether_addr_copy(ipm->mac, tmp->mac); 1145 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr); 1146 ipm->is_multicast = 1; 1147 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1148 hash_add(card->ip_mc_htable, 1149 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1150 } 1151 } 1152 1153 kfree(tmp); 1154 } 1155 1156 /* called with rcu_read_lock */ 1157 static void qeth_l3_add_vlan_mc(struct qeth_card *card) 1158 { 1159 struct in_device *in_dev; 1160 u16 vid; 1161 1162 QETH_CARD_TEXT(card, 4, "addmcvl"); 1163 1164 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1165 return; 1166 1167 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1168 struct net_device *netdev; 1169 1170 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1171 vid); 1172 if (netdev == NULL || 1173 !(netdev->flags & IFF_UP)) 1174 continue; 1175 in_dev = __in_dev_get_rcu(netdev); 1176 if (!in_dev) 1177 continue; 1178 qeth_l3_add_mc_to_hash(card, in_dev); 1179 } 1180 } 1181 1182 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card) 1183 { 1184 struct in_device *in4_dev; 1185 1186 QETH_CARD_TEXT(card, 4, "chkmcv4"); 1187 1188 rcu_read_lock(); 1189 in4_dev = __in_dev_get_rcu(card->dev); 1190 if (in4_dev == NULL) 1191 goto unlock; 1192 qeth_l3_add_mc_to_hash(card, in4_dev); 1193 qeth_l3_add_vlan_mc(card); 1194 unlock: 1195 rcu_read_unlock(); 1196 } 1197 1198 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card, 1199 struct inet6_dev *in6_dev) 1200 { 1201 struct qeth_ipaddr *ipm; 1202 struct ifmcaddr6 *im6; 1203 struct qeth_ipaddr *tmp; 1204 1205 QETH_CARD_TEXT(card, 4, "addmc6"); 1206 1207 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1208 if (!tmp) 1209 return; 1210 1211 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { 1212 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac); 1213 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr, 1214 sizeof(struct in6_addr)); 1215 tmp->is_multicast = 1; 1216 1217 ipm = qeth_l3_find_addr_by_ip(card, tmp); 1218 if (ipm) { 1219 /* for mcast, by-IP match means full match */ 1220 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1221 continue; 1222 } 1223 1224 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1225 if (!ipm) 1226 continue; 1227 1228 ether_addr_copy(ipm->mac, tmp->mac); 1229 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr, 1230 sizeof(struct in6_addr)); 1231 ipm->is_multicast = 1; 1232 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1233 hash_add(card->ip_mc_htable, 1234 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1235 1236 } 1237 kfree(tmp); 1238 } 1239 1240 /* called with rcu_read_lock */ 1241 static void qeth_l3_add_vlan_mc6(struct qeth_card *card) 1242 { 1243 struct inet6_dev *in_dev; 1244 u16 vid; 1245 1246 QETH_CARD_TEXT(card, 4, "admc6vl"); 1247 1248 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1249 return; 1250 1251 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1252 struct net_device *netdev; 1253 1254 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1255 vid); 1256 if (netdev == NULL || 1257 !(netdev->flags & IFF_UP)) 1258 continue; 1259 in_dev = in6_dev_get(netdev); 1260 if (!in_dev) 1261 continue; 1262 read_lock_bh(&in_dev->lock); 1263 qeth_l3_add_mc6_to_hash(card, in_dev); 1264 read_unlock_bh(&in_dev->lock); 1265 in6_dev_put(in_dev); 1266 } 1267 } 1268 1269 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card) 1270 { 1271 struct inet6_dev *in6_dev; 1272 1273 QETH_CARD_TEXT(card, 4, "chkmcv6"); 1274 1275 if (!qeth_is_supported(card, IPA_IPV6)) 1276 return ; 1277 in6_dev = in6_dev_get(card->dev); 1278 if (!in6_dev) 1279 return; 1280 1281 rcu_read_lock(); 1282 read_lock_bh(&in6_dev->lock); 1283 qeth_l3_add_mc6_to_hash(card, in6_dev); 1284 qeth_l3_add_vlan_mc6(card); 1285 read_unlock_bh(&in6_dev->lock); 1286 rcu_read_unlock(); 1287 in6_dev_put(in6_dev); 1288 } 1289 1290 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, 1291 __be16 proto, u16 vid) 1292 { 1293 struct qeth_card *card = dev->ml_priv; 1294 1295 set_bit(vid, card->active_vlans); 1296 return 0; 1297 } 1298 1299 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, 1300 __be16 proto, u16 vid) 1301 { 1302 struct qeth_card *card = dev->ml_priv; 1303 1304 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 1305 1306 clear_bit(vid, card->active_vlans); 1307 qeth_l3_set_rx_mode(dev); 1308 return 0; 1309 } 1310 1311 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb, 1312 struct qeth_hdr *hdr) 1313 { 1314 struct af_iucv_trans_hdr *iucv = (struct af_iucv_trans_hdr *) skb->data; 1315 struct net_device *dev = skb->dev; 1316 1317 if (IS_IQD(card) && iucv->magic == ETH_P_AF_IUCV) { 1318 dev_hard_header(skb, dev, ETH_P_AF_IUCV, dev->dev_addr, 1319 "FAKELL", skb->len); 1320 return; 1321 } 1322 1323 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) { 1324 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 : 1325 ETH_P_IP; 1326 unsigned char tg_addr[ETH_ALEN]; 1327 1328 skb_reset_network_header(skb); 1329 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) { 1330 case QETH_CAST_MULTICAST: 1331 if (prot == ETH_P_IP) 1332 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr); 1333 else 1334 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr); 1335 QETH_CARD_STAT_INC(card, rx_multicast); 1336 break; 1337 case QETH_CAST_BROADCAST: 1338 ether_addr_copy(tg_addr, card->dev->broadcast); 1339 QETH_CARD_STAT_INC(card, rx_multicast); 1340 break; 1341 default: 1342 if (card->options.sniffer) 1343 skb->pkt_type = PACKET_OTHERHOST; 1344 ether_addr_copy(tg_addr, card->dev->dev_addr); 1345 } 1346 1347 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR) 1348 card->dev->header_ops->create(skb, card->dev, prot, 1349 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac, 1350 skb->len); 1351 else 1352 card->dev->header_ops->create(skb, card->dev, prot, 1353 tg_addr, "FAKELL", skb->len); 1354 } 1355 1356 /* copy VLAN tag from hdr into skb */ 1357 if (!card->options.sniffer && 1358 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME | 1359 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) { 1360 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ? 1361 hdr->hdr.l3.vlan_id : 1362 hdr->hdr.l3.next_hop.rx.vlan_id; 1363 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag); 1364 } 1365 1366 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags); 1367 } 1368 1369 static int qeth_l3_process_inbound_buffer(struct qeth_card *card, 1370 int budget, int *done) 1371 { 1372 int work_done = 0; 1373 struct sk_buff *skb; 1374 struct qeth_hdr *hdr; 1375 unsigned int len; 1376 1377 *done = 0; 1378 WARN_ON_ONCE(!budget); 1379 while (budget) { 1380 skb = qeth_core_get_next_skb(card, 1381 &card->qdio.in_q->bufs[card->rx.b_index], 1382 &card->rx.b_element, &card->rx.e_offset, &hdr); 1383 if (!skb) { 1384 *done = 1; 1385 break; 1386 } 1387 switch (hdr->hdr.l3.id) { 1388 case QETH_HEADER_TYPE_LAYER3: 1389 qeth_l3_rebuild_skb(card, skb, hdr); 1390 /* fall through */ 1391 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */ 1392 skb->protocol = eth_type_trans(skb, skb->dev); 1393 len = skb->len; 1394 napi_gro_receive(&card->napi, skb); 1395 break; 1396 default: 1397 dev_kfree_skb_any(skb); 1398 QETH_CARD_TEXT(card, 3, "inbunkno"); 1399 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr)); 1400 continue; 1401 } 1402 work_done++; 1403 budget--; 1404 QETH_CARD_STAT_INC(card, rx_packets); 1405 QETH_CARD_STAT_ADD(card, rx_bytes, len); 1406 } 1407 return work_done; 1408 } 1409 1410 static void qeth_l3_stop_card(struct qeth_card *card) 1411 { 1412 QETH_CARD_TEXT(card, 2, "stopcard"); 1413 1414 qeth_set_allowed_threads(card, 0, 1); 1415 1416 cancel_work_sync(&card->rx_mode_work); 1417 qeth_l3_drain_rx_mode_cache(card); 1418 1419 if (card->options.sniffer && 1420 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) 1421 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1422 1423 if (card->state == CARD_STATE_SOFTSETUP) { 1424 qeth_l3_clear_ip_htable(card, 1); 1425 qeth_clear_ipacmd_list(card); 1426 card->state = CARD_STATE_HARDSETUP; 1427 } 1428 if (card->state == CARD_STATE_HARDSETUP) { 1429 qeth_qdio_clear_card(card, 0); 1430 qeth_drain_output_queues(card); 1431 qeth_clear_working_pool_list(card); 1432 card->state = CARD_STATE_DOWN; 1433 } 1434 1435 flush_workqueue(card->event_wq); 1436 } 1437 1438 /* 1439 * test for and Switch promiscuous mode (on or off) 1440 * either for guestlan or HiperSocket Sniffer 1441 */ 1442 static void 1443 qeth_l3_handle_promisc_mode(struct qeth_card *card) 1444 { 1445 struct net_device *dev = card->dev; 1446 1447 if (((dev->flags & IFF_PROMISC) && 1448 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 1449 (!(dev->flags & IFF_PROMISC) && 1450 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 1451 return; 1452 1453 if (IS_VM_NIC(card)) { /* Guestlan trace */ 1454 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1455 qeth_setadp_promisc_mode(card); 1456 } else if (card->options.sniffer && /* HiperSockets trace */ 1457 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 1458 if (dev->flags & IFF_PROMISC) { 1459 QETH_CARD_TEXT(card, 3, "+promisc"); 1460 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE); 1461 } else { 1462 QETH_CARD_TEXT(card, 3, "-promisc"); 1463 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1464 } 1465 } 1466 } 1467 1468 static void qeth_l3_rx_mode_work(struct work_struct *work) 1469 { 1470 struct qeth_card *card = container_of(work, struct qeth_card, 1471 rx_mode_work); 1472 struct qeth_ipaddr *addr; 1473 struct hlist_node *tmp; 1474 int i, rc; 1475 1476 QETH_CARD_TEXT(card, 3, "setmulti"); 1477 1478 if (!card->options.sniffer) { 1479 qeth_l3_add_multicast_ipv4(card); 1480 qeth_l3_add_multicast_ipv6(card); 1481 1482 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 1483 switch (addr->disp_flag) { 1484 case QETH_DISP_ADDR_DELETE: 1485 rc = qeth_l3_deregister_addr_entry(card, addr); 1486 if (!rc || rc == -ENOENT) { 1487 hash_del(&addr->hnode); 1488 kfree(addr); 1489 } 1490 break; 1491 case QETH_DISP_ADDR_ADD: 1492 rc = qeth_l3_register_addr_entry(card, addr); 1493 if (rc && rc != -ENETDOWN) { 1494 hash_del(&addr->hnode); 1495 kfree(addr); 1496 break; 1497 } 1498 addr->ref_counter = 1; 1499 /* fall through */ 1500 default: 1501 /* for next call to set_rx_mode(): */ 1502 addr->disp_flag = QETH_DISP_ADDR_DELETE; 1503 } 1504 } 1505 1506 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1507 return; 1508 } 1509 qeth_l3_handle_promisc_mode(card); 1510 } 1511 1512 static int qeth_l3_arp_makerc(u16 rc) 1513 { 1514 switch (rc) { 1515 case IPA_RC_SUCCESS: 1516 return 0; 1517 case QETH_IPA_ARP_RC_NOTSUPP: 1518 case QETH_IPA_ARP_RC_Q_NOTSUPP: 1519 return -EOPNOTSUPP; 1520 case QETH_IPA_ARP_RC_OUT_OF_RANGE: 1521 return -EINVAL; 1522 case QETH_IPA_ARP_RC_Q_NO_DATA: 1523 return -ENOENT; 1524 default: 1525 return -EIO; 1526 } 1527 } 1528 1529 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply, 1530 unsigned long data) 1531 { 1532 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1533 1534 qeth_setassparms_cb(card, reply, data); 1535 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1536 } 1537 1538 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) 1539 { 1540 struct qeth_cmd_buffer *iob; 1541 int rc; 1542 1543 QETH_CARD_TEXT(card, 3, "arpstnoe"); 1544 1545 /* 1546 * currently GuestLAN only supports the ARP assist function 1547 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; 1548 * thus we say EOPNOTSUPP for this ARP function 1549 */ 1550 if (IS_VM_NIC(card)) 1551 return -EOPNOTSUPP; 1552 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1553 return -EOPNOTSUPP; 1554 } 1555 1556 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1557 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 1558 SETASS_DATA_SIZEOF(flags_32bit), 1559 QETH_PROT_IPV4); 1560 if (!iob) 1561 return -ENOMEM; 1562 1563 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries; 1564 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1565 if (rc) 1566 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n", 1567 CARD_DEVID(card), rc); 1568 return rc; 1569 } 1570 1571 static __u32 get_arp_entry_size(struct qeth_card *card, 1572 struct qeth_arp_query_data *qdata, 1573 struct qeth_arp_entrytype *type, __u8 strip_entries) 1574 { 1575 __u32 rc; 1576 __u8 is_hsi; 1577 1578 is_hsi = qdata->reply_bits == 5; 1579 if (type->ip == QETHARP_IP_ADDR_V4) { 1580 QETH_CARD_TEXT(card, 4, "arpev4"); 1581 if (strip_entries) { 1582 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : 1583 sizeof(struct qeth_arp_qi_entry7_short); 1584 } else { 1585 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : 1586 sizeof(struct qeth_arp_qi_entry7); 1587 } 1588 } else if (type->ip == QETHARP_IP_ADDR_V6) { 1589 QETH_CARD_TEXT(card, 4, "arpev6"); 1590 if (strip_entries) { 1591 rc = is_hsi ? 1592 sizeof(struct qeth_arp_qi_entry5_short_ipv6) : 1593 sizeof(struct qeth_arp_qi_entry7_short_ipv6); 1594 } else { 1595 rc = is_hsi ? 1596 sizeof(struct qeth_arp_qi_entry5_ipv6) : 1597 sizeof(struct qeth_arp_qi_entry7_ipv6); 1598 } 1599 } else { 1600 QETH_CARD_TEXT(card, 4, "arpinv"); 1601 rc = 0; 1602 } 1603 1604 return rc; 1605 } 1606 1607 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) 1608 { 1609 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || 1610 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); 1611 } 1612 1613 static int qeth_l3_arp_query_cb(struct qeth_card *card, 1614 struct qeth_reply *reply, unsigned long data) 1615 { 1616 struct qeth_ipa_cmd *cmd; 1617 struct qeth_arp_query_data *qdata; 1618 struct qeth_arp_query_info *qinfo; 1619 int e; 1620 int entrybytes_done; 1621 int stripped_bytes; 1622 __u8 do_strip_entries; 1623 1624 QETH_CARD_TEXT(card, 3, "arpquecb"); 1625 1626 qinfo = (struct qeth_arp_query_info *) reply->param; 1627 cmd = (struct qeth_ipa_cmd *) data; 1628 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version); 1629 if (cmd->hdr.return_code) { 1630 QETH_CARD_TEXT(card, 4, "arpcberr"); 1631 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1632 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1633 } 1634 if (cmd->data.setassparms.hdr.return_code) { 1635 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 1636 QETH_CARD_TEXT(card, 4, "setaperr"); 1637 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1638 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1639 } 1640 qdata = &cmd->data.setassparms.data.query_arp; 1641 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries); 1642 1643 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; 1644 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; 1645 entrybytes_done = 0; 1646 for (e = 0; e < qdata->no_entries; ++e) { 1647 char *cur_entry; 1648 __u32 esize; 1649 struct qeth_arp_entrytype *etype; 1650 1651 cur_entry = &qdata->data + entrybytes_done; 1652 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; 1653 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) { 1654 QETH_CARD_TEXT(card, 4, "pmis"); 1655 QETH_CARD_TEXT_(card, 4, "%i", etype->ip); 1656 break; 1657 } 1658 esize = get_arp_entry_size(card, qdata, etype, 1659 do_strip_entries); 1660 QETH_CARD_TEXT_(card, 5, "esz%i", esize); 1661 if (!esize) 1662 break; 1663 1664 if ((qinfo->udata_len - qinfo->udata_offset) < esize) { 1665 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC); 1666 memset(qinfo->udata, 0, 4); 1667 return -ENOSPC; 1668 } 1669 1670 memcpy(qinfo->udata + qinfo->udata_offset, 1671 &qdata->data + entrybytes_done + stripped_bytes, 1672 esize); 1673 entrybytes_done += esize + stripped_bytes; 1674 qinfo->udata_offset += esize; 1675 ++qinfo->no_entries; 1676 } 1677 /* check if all replies received ... */ 1678 if (cmd->data.setassparms.hdr.seq_no < 1679 cmd->data.setassparms.hdr.number_of_replies) 1680 return 1; 1681 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries); 1682 memcpy(qinfo->udata, &qinfo->no_entries, 4); 1683 /* keep STRIP_ENTRIES flag so the user program can distinguish 1684 * stripped entries from normal ones */ 1685 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) 1686 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; 1687 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); 1688 QETH_CARD_TEXT_(card, 4, "rc%i", 0); 1689 return 0; 1690 } 1691 1692 static int qeth_l3_query_arp_cache_info(struct qeth_card *card, 1693 enum qeth_prot_versions prot, 1694 struct qeth_arp_query_info *qinfo) 1695 { 1696 struct qeth_cmd_buffer *iob; 1697 struct qeth_ipa_cmd *cmd; 1698 int rc; 1699 1700 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); 1701 1702 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1703 IPA_CMD_ASS_ARP_QUERY_INFO, 1704 SETASS_DATA_SIZEOF(query_arp), prot); 1705 if (!iob) 1706 return -ENOMEM; 1707 cmd = __ipa_cmd(iob); 1708 cmd->data.setassparms.data.query_arp.request_bits = 0x000F; 1709 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo); 1710 if (rc) 1711 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n", 1712 CARD_DEVID(card), rc); 1713 return rc; 1714 } 1715 1716 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) 1717 { 1718 struct qeth_arp_query_info qinfo = {0, }; 1719 int rc; 1720 1721 QETH_CARD_TEXT(card, 3, "arpquery"); 1722 1723 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ 1724 IPA_ARP_PROCESSING)) { 1725 QETH_CARD_TEXT(card, 3, "arpqnsup"); 1726 rc = -EOPNOTSUPP; 1727 goto out; 1728 } 1729 /* get size of userspace buffer and mask_bits -> 6 bytes */ 1730 if (copy_from_user(&qinfo, udata, 6)) { 1731 rc = -EFAULT; 1732 goto out; 1733 } 1734 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 1735 if (!qinfo.udata) { 1736 rc = -ENOMEM; 1737 goto out; 1738 } 1739 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; 1740 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo); 1741 if (rc) { 1742 if (copy_to_user(udata, qinfo.udata, 4)) 1743 rc = -EFAULT; 1744 goto free_and_out; 1745 } 1746 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { 1747 /* fails in case of GuestLAN QDIO mode */ 1748 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo); 1749 } 1750 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) { 1751 QETH_CARD_TEXT(card, 4, "qactf"); 1752 rc = -EFAULT; 1753 goto free_and_out; 1754 } 1755 QETH_CARD_TEXT(card, 4, "qacts"); 1756 1757 free_and_out: 1758 kfree(qinfo.udata); 1759 out: 1760 return rc; 1761 } 1762 1763 static int qeth_l3_arp_modify_entry(struct qeth_card *card, 1764 struct qeth_arp_cache_entry *entry, 1765 enum qeth_arp_process_subcmds arp_cmd) 1766 { 1767 struct qeth_arp_cache_entry *cmd_entry; 1768 struct qeth_cmd_buffer *iob; 1769 int rc; 1770 1771 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY) 1772 QETH_CARD_TEXT(card, 3, "arpadd"); 1773 else 1774 QETH_CARD_TEXT(card, 3, "arpdel"); 1775 1776 /* 1777 * currently GuestLAN only supports the ARP assist function 1778 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; 1779 * thus we say EOPNOTSUPP for this ARP function 1780 */ 1781 if (IS_VM_NIC(card)) 1782 return -EOPNOTSUPP; 1783 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1784 return -EOPNOTSUPP; 1785 } 1786 1787 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd, 1788 SETASS_DATA_SIZEOF(arp_entry), 1789 QETH_PROT_IPV4); 1790 if (!iob) 1791 return -ENOMEM; 1792 1793 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry; 1794 ether_addr_copy(cmd_entry->macaddr, entry->macaddr); 1795 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4); 1796 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1797 if (rc) 1798 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n", 1799 arp_cmd, CARD_DEVID(card), rc); 1800 return rc; 1801 } 1802 1803 static int qeth_l3_arp_flush_cache(struct qeth_card *card) 1804 { 1805 struct qeth_cmd_buffer *iob; 1806 int rc; 1807 1808 QETH_CARD_TEXT(card, 3, "arpflush"); 1809 1810 /* 1811 * currently GuestLAN only supports the ARP assist function 1812 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; 1813 * thus we say EOPNOTSUPP for this ARP function 1814 */ 1815 if (IS_VM_NIC(card) || IS_IQD(card)) 1816 return -EOPNOTSUPP; 1817 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1818 return -EOPNOTSUPP; 1819 } 1820 1821 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1822 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0, 1823 QETH_PROT_IPV4); 1824 if (!iob) 1825 return -ENOMEM; 1826 1827 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1828 if (rc) 1829 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n", 1830 CARD_DEVID(card), rc); 1831 return rc; 1832 } 1833 1834 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 1835 { 1836 struct qeth_card *card = dev->ml_priv; 1837 struct qeth_arp_cache_entry arp_entry; 1838 enum qeth_arp_process_subcmds arp_cmd; 1839 int rc = 0; 1840 1841 switch (cmd) { 1842 case SIOC_QETH_ARP_SET_NO_ENTRIES: 1843 if (!capable(CAP_NET_ADMIN)) { 1844 rc = -EPERM; 1845 break; 1846 } 1847 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); 1848 break; 1849 case SIOC_QETH_ARP_QUERY_INFO: 1850 if (!capable(CAP_NET_ADMIN)) { 1851 rc = -EPERM; 1852 break; 1853 } 1854 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data); 1855 break; 1856 case SIOC_QETH_ARP_ADD_ENTRY: 1857 case SIOC_QETH_ARP_REMOVE_ENTRY: 1858 if (!capable(CAP_NET_ADMIN)) 1859 return -EPERM; 1860 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry))) 1861 return -EFAULT; 1862 1863 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ? 1864 IPA_CMD_ASS_ARP_ADD_ENTRY : 1865 IPA_CMD_ASS_ARP_REMOVE_ENTRY; 1866 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd); 1867 case SIOC_QETH_ARP_FLUSH_CACHE: 1868 if (!capable(CAP_NET_ADMIN)) { 1869 rc = -EPERM; 1870 break; 1871 } 1872 rc = qeth_l3_arp_flush_cache(card); 1873 break; 1874 default: 1875 rc = -EOPNOTSUPP; 1876 } 1877 return rc; 1878 } 1879 1880 static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst, 1881 int ipv) 1882 { 1883 struct neighbour *n = NULL; 1884 1885 if (dst) 1886 n = dst_neigh_lookup_skb(dst, skb); 1887 1888 if (n) { 1889 int cast_type = n->type; 1890 1891 neigh_release(n); 1892 if ((cast_type == RTN_BROADCAST) || 1893 (cast_type == RTN_MULTICAST) || 1894 (cast_type == RTN_ANYCAST)) 1895 return cast_type; 1896 return RTN_UNICAST; 1897 } 1898 1899 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */ 1900 switch (ipv) { 1901 case 4: 1902 if (ipv4_is_lbcast(ip_hdr(skb)->daddr)) 1903 return RTN_BROADCAST; 1904 return ipv4_is_multicast(ip_hdr(skb)->daddr) ? 1905 RTN_MULTICAST : RTN_UNICAST; 1906 case 6: 1907 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ? 1908 RTN_MULTICAST : RTN_UNICAST; 1909 default: 1910 /* ... and MAC address */ 1911 return qeth_get_ether_cast_type(skb); 1912 } 1913 } 1914 1915 static int qeth_l3_get_cast_type(struct sk_buff *skb) 1916 { 1917 int ipv = qeth_get_ip_version(skb); 1918 struct dst_entry *dst; 1919 int cast_type; 1920 1921 rcu_read_lock(); 1922 dst = qeth_dst_check_rcu(skb, ipv); 1923 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv); 1924 rcu_read_unlock(); 1925 1926 return cast_type; 1927 } 1928 1929 static u8 qeth_l3_cast_type_to_flag(int cast_type) 1930 { 1931 if (cast_type == RTN_MULTICAST) 1932 return QETH_CAST_MULTICAST; 1933 if (cast_type == RTN_ANYCAST) 1934 return QETH_CAST_ANYCAST; 1935 if (cast_type == RTN_BROADCAST) 1936 return QETH_CAST_BROADCAST; 1937 return QETH_CAST_UNICAST; 1938 } 1939 1940 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue, 1941 struct qeth_hdr *hdr, struct sk_buff *skb, 1942 int ipv, unsigned int data_len) 1943 { 1944 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3; 1945 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 1946 struct qeth_card *card = queue->card; 1947 struct dst_entry *dst; 1948 int cast_type; 1949 1950 hdr->hdr.l3.length = data_len; 1951 1952 if (skb_is_gso(skb)) { 1953 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO; 1954 } else { 1955 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 1956 1957 if (skb->protocol == htons(ETH_P_AF_IUCV)) { 1958 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST; 1959 l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80); 1960 memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2], 1961 iucv_trans_hdr(skb)->destUserID, 8); 1962 return; 1963 } 1964 1965 if (skb->ip_summed == CHECKSUM_PARTIAL) { 1966 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv); 1967 /* some HW requires combined L3+L4 csum offload: */ 1968 if (ipv == 4) 1969 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ; 1970 QETH_TXQ_STAT_INC(queue, skbs_csum); 1971 } 1972 } 1973 1974 if (ipv == 4 || IS_IQD(card)) { 1975 /* NETIF_F_HW_VLAN_CTAG_TX */ 1976 if (skb_vlan_tag_present(skb)) { 1977 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME; 1978 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); 1979 } 1980 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) { 1981 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG; 1982 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); 1983 } 1984 1985 rcu_read_lock(); 1986 dst = qeth_dst_check_rcu(skb, ipv); 1987 1988 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ) 1989 cast_type = RTN_UNICAST; 1990 else 1991 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv); 1992 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type); 1993 1994 if (ipv == 4) { 1995 struct rtable *rt = (struct rtable *) dst; 1996 1997 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ? 1998 rt_nexthop(rt, ip_hdr(skb)->daddr) : 1999 ip_hdr(skb)->daddr; 2000 } else if (ipv == 6) { 2001 struct rt6_info *rt = (struct rt6_info *) dst; 2002 2003 if (rt && !ipv6_addr_any(&rt->rt6i_gateway)) 2004 l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway; 2005 else 2006 l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr; 2007 2008 hdr->hdr.l3.flags |= QETH_HDR_IPV6; 2009 if (!IS_IQD(card)) 2010 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU; 2011 } else { 2012 /* OSA only: */ 2013 l3_hdr->flags |= QETH_HDR_PASSTHRU; 2014 } 2015 rcu_read_unlock(); 2016 } 2017 2018 static void qeth_l3_fixup_headers(struct sk_buff *skb) 2019 { 2020 struct iphdr *iph = ip_hdr(skb); 2021 2022 /* this is safe, IPv6 traffic takes a different path */ 2023 if (skb->ip_summed == CHECKSUM_PARTIAL) 2024 iph->check = 0; 2025 if (skb_is_gso(skb)) { 2026 iph->tot_len = 0; 2027 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr, 2028 iph->daddr, 0); 2029 } 2030 } 2031 2032 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb, 2033 struct qeth_qdio_out_q *queue, int ipv) 2034 { 2035 unsigned int hw_hdr_len; 2036 int rc; 2037 2038 /* re-use the L2 header area for the HW header: */ 2039 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) : 2040 sizeof(struct qeth_hdr); 2041 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN); 2042 if (rc) 2043 return rc; 2044 skb_pull(skb, ETH_HLEN); 2045 2046 qeth_l3_fixup_headers(skb); 2047 return qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header); 2048 } 2049 2050 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, 2051 struct net_device *dev) 2052 { 2053 struct qeth_card *card = dev->ml_priv; 2054 u16 txq = skb_get_queue_mapping(skb); 2055 int ipv = qeth_get_ip_version(skb); 2056 struct qeth_qdio_out_q *queue; 2057 int tx_bytes = skb->len; 2058 int rc; 2059 2060 if (IS_IQD(card)) { 2061 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)]; 2062 2063 if (card->options.sniffer) 2064 goto tx_drop; 2065 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) || 2066 (card->options.cq == QETH_CQ_ENABLED && 2067 skb->protocol != htons(ETH_P_AF_IUCV))) 2068 goto tx_drop; 2069 } else { 2070 queue = card->qdio.out_qs[txq]; 2071 } 2072 2073 if (!(dev->flags & IFF_BROADCAST) && 2074 qeth_l3_get_cast_type(skb) == RTN_BROADCAST) 2075 goto tx_drop; 2076 2077 if (ipv == 4 || IS_IQD(card)) 2078 rc = qeth_l3_xmit(card, skb, queue, ipv); 2079 else 2080 rc = qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header); 2081 2082 if (!rc) { 2083 QETH_TXQ_STAT_INC(queue, tx_packets); 2084 QETH_TXQ_STAT_ADD(queue, tx_bytes, tx_bytes); 2085 return NETDEV_TX_OK; 2086 } 2087 2088 tx_drop: 2089 QETH_TXQ_STAT_INC(queue, tx_dropped); 2090 kfree_skb(skb); 2091 return NETDEV_TX_OK; 2092 } 2093 2094 static void qeth_l3_set_rx_mode(struct net_device *dev) 2095 { 2096 struct qeth_card *card = dev->ml_priv; 2097 2098 schedule_work(&card->rx_mode_work); 2099 } 2100 2101 /* 2102 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting 2103 * NOARP on the netdevice is no option because it also turns off neighbor 2104 * solicitation. For IPv4 we install a neighbor_setup function. We don't want 2105 * arp resolution but we want the hard header (packet socket will work 2106 * e.g. tcpdump) 2107 */ 2108 static int qeth_l3_neigh_setup_noarp(struct neighbour *n) 2109 { 2110 n->nud_state = NUD_NOARP; 2111 memcpy(n->ha, "FAKELL", 6); 2112 n->output = n->ops->connected_output; 2113 return 0; 2114 } 2115 2116 static int 2117 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) 2118 { 2119 if (np->tbl->family == AF_INET) 2120 np->neigh_setup = qeth_l3_neigh_setup_noarp; 2121 2122 return 0; 2123 } 2124 2125 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb, 2126 struct net_device *dev, 2127 netdev_features_t features) 2128 { 2129 if (qeth_get_ip_version(skb) != 4) 2130 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 2131 return qeth_features_check(skb, dev, features); 2132 } 2133 2134 static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 2135 struct net_device *sb_dev) 2136 { 2137 return qeth_iqd_select_queue(dev, skb, qeth_l3_get_cast_type(skb), 2138 sb_dev); 2139 } 2140 2141 static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb, 2142 struct net_device *sb_dev) 2143 { 2144 struct qeth_card *card = dev->ml_priv; 2145 2146 return qeth_get_priority_queue(card, skb); 2147 } 2148 2149 static const struct net_device_ops qeth_l3_netdev_ops = { 2150 .ndo_open = qeth_open, 2151 .ndo_stop = qeth_stop, 2152 .ndo_get_stats64 = qeth_get_stats64, 2153 .ndo_start_xmit = qeth_l3_hard_start_xmit, 2154 .ndo_select_queue = qeth_l3_iqd_select_queue, 2155 .ndo_validate_addr = eth_validate_addr, 2156 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 2157 .ndo_do_ioctl = qeth_do_ioctl, 2158 .ndo_fix_features = qeth_fix_features, 2159 .ndo_set_features = qeth_set_features, 2160 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 2161 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 2162 .ndo_tx_timeout = qeth_tx_timeout, 2163 }; 2164 2165 static const struct net_device_ops qeth_l3_osa_netdev_ops = { 2166 .ndo_open = qeth_open, 2167 .ndo_stop = qeth_stop, 2168 .ndo_get_stats64 = qeth_get_stats64, 2169 .ndo_start_xmit = qeth_l3_hard_start_xmit, 2170 .ndo_features_check = qeth_l3_osa_features_check, 2171 .ndo_select_queue = qeth_l3_osa_select_queue, 2172 .ndo_validate_addr = eth_validate_addr, 2173 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 2174 .ndo_do_ioctl = qeth_do_ioctl, 2175 .ndo_fix_features = qeth_fix_features, 2176 .ndo_set_features = qeth_set_features, 2177 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 2178 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 2179 .ndo_tx_timeout = qeth_tx_timeout, 2180 .ndo_neigh_setup = qeth_l3_neigh_setup, 2181 }; 2182 2183 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok) 2184 { 2185 unsigned int headroom; 2186 int rc; 2187 2188 if (IS_OSD(card) || IS_OSX(card)) { 2189 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) || 2190 (card->info.link_type == QETH_LINK_TYPE_HSTR)) { 2191 pr_info("qeth_l3: ignoring TR device\n"); 2192 return -ENODEV; 2193 } 2194 2195 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; 2196 2197 /*IPv6 address autoconfiguration stuff*/ 2198 qeth_l3_get_unique_id(card); 2199 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD)) 2200 card->dev->dev_id = card->info.unique_id & 0xffff; 2201 2202 if (!IS_VM_NIC(card)) { 2203 card->dev->features |= NETIF_F_SG; 2204 card->dev->hw_features |= NETIF_F_TSO | 2205 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 2206 card->dev->vlan_features |= NETIF_F_TSO | 2207 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 2208 } 2209 2210 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 2211 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 2212 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 2213 } 2214 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 2215 card->dev->hw_features |= NETIF_F_TSO6; 2216 card->dev->vlan_features |= NETIF_F_TSO6; 2217 } 2218 2219 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */ 2220 if (card->dev->hw_features & NETIF_F_TSO6) 2221 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN; 2222 else if (card->dev->hw_features & NETIF_F_TSO) 2223 headroom = sizeof(struct qeth_hdr_tso); 2224 else 2225 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN; 2226 } else if (IS_IQD(card)) { 2227 card->dev->flags |= IFF_NOARP; 2228 card->dev->netdev_ops = &qeth_l3_netdev_ops; 2229 headroom = sizeof(struct qeth_hdr) - ETH_HLEN; 2230 2231 rc = qeth_l3_iqd_read_initial_mac(card); 2232 if (rc) 2233 goto out; 2234 } else 2235 return -ENODEV; 2236 2237 card->dev->needed_headroom = headroom; 2238 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 2239 NETIF_F_HW_VLAN_CTAG_RX | 2240 NETIF_F_HW_VLAN_CTAG_FILTER; 2241 2242 netif_keep_dst(card->dev); 2243 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) 2244 netif_set_gso_max_size(card->dev, 2245 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1)); 2246 2247 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 2248 rc = register_netdev(card->dev); 2249 if (!rc && carrier_ok) 2250 netif_carrier_on(card->dev); 2251 2252 out: 2253 if (rc) 2254 card->dev->netdev_ops = NULL; 2255 return rc; 2256 } 2257 2258 static const struct device_type qeth_l3_devtype = { 2259 .name = "qeth_layer3", 2260 .groups = qeth_l3_attr_groups, 2261 }; 2262 2263 static int qeth_l3_probe_device(struct ccwgroup_device *gdev) 2264 { 2265 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2266 int rc; 2267 2268 hash_init(card->ip_htable); 2269 mutex_init(&card->ip_lock); 2270 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0, 2271 dev_name(&gdev->dev)); 2272 if (!card->cmd_wq) 2273 return -ENOMEM; 2274 2275 if (gdev->dev.type == &qeth_generic_devtype) { 2276 rc = qeth_l3_create_device_attributes(&gdev->dev); 2277 if (rc) { 2278 destroy_workqueue(card->cmd_wq); 2279 return rc; 2280 } 2281 } 2282 2283 hash_init(card->ip_mc_htable); 2284 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work); 2285 return 0; 2286 } 2287 2288 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) 2289 { 2290 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 2291 2292 if (cgdev->dev.type == &qeth_generic_devtype) 2293 qeth_l3_remove_device_attributes(&cgdev->dev); 2294 2295 qeth_set_allowed_threads(card, 0, 1); 2296 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 2297 2298 if (cgdev->state == CCWGROUP_ONLINE) 2299 qeth_l3_set_offline(cgdev); 2300 2301 cancel_work_sync(&card->close_dev_work); 2302 if (qeth_netdev_is_registered(card->dev)) 2303 unregister_netdev(card->dev); 2304 2305 flush_workqueue(card->cmd_wq); 2306 destroy_workqueue(card->cmd_wq); 2307 qeth_l3_clear_ip_htable(card, 0); 2308 qeth_l3_clear_ipato_list(card); 2309 } 2310 2311 static int qeth_l3_set_online(struct ccwgroup_device *gdev) 2312 { 2313 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2314 struct net_device *dev = card->dev; 2315 int rc = 0; 2316 bool carrier_ok; 2317 2318 mutex_lock(&card->discipline_mutex); 2319 mutex_lock(&card->conf_mutex); 2320 QETH_CARD_TEXT(card, 2, "setonlin"); 2321 2322 rc = qeth_core_hardsetup_card(card, &carrier_ok); 2323 if (rc) { 2324 QETH_CARD_TEXT_(card, 2, "2err%04x", rc); 2325 rc = -ENODEV; 2326 goto out_remove; 2327 } 2328 2329 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 2330 if (card->info.hwtrap && 2331 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 2332 card->info.hwtrap = 0; 2333 } else 2334 card->info.hwtrap = 0; 2335 2336 card->state = CARD_STATE_HARDSETUP; 2337 qeth_print_status_message(card); 2338 2339 /* softsetup */ 2340 QETH_CARD_TEXT(card, 2, "softsetp"); 2341 2342 rc = qeth_l3_setadapter_parms(card); 2343 if (rc) 2344 QETH_CARD_TEXT_(card, 2, "2err%04x", rc); 2345 if (!card->options.sniffer) { 2346 rc = qeth_l3_start_ipassists(card); 2347 if (rc) { 2348 QETH_CARD_TEXT_(card, 2, "3err%d", rc); 2349 goto out_remove; 2350 } 2351 rc = qeth_l3_setrouting_v4(card); 2352 if (rc) 2353 QETH_CARD_TEXT_(card, 2, "4err%04x", rc); 2354 rc = qeth_l3_setrouting_v6(card); 2355 if (rc) 2356 QETH_CARD_TEXT_(card, 2, "5err%04x", rc); 2357 } 2358 2359 rc = qeth_init_qdio_queues(card); 2360 if (rc) { 2361 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 2362 rc = -ENODEV; 2363 goto out_remove; 2364 } 2365 card->state = CARD_STATE_SOFTSETUP; 2366 2367 qeth_set_allowed_threads(card, 0xffffffff, 0); 2368 qeth_l3_recover_ip(card); 2369 2370 if (!qeth_netdev_is_registered(dev)) { 2371 rc = qeth_l3_setup_netdev(card, carrier_ok); 2372 if (rc) 2373 goto out_remove; 2374 } else { 2375 rtnl_lock(); 2376 if (carrier_ok) 2377 netif_carrier_on(dev); 2378 else 2379 netif_carrier_off(dev); 2380 2381 netif_device_attach(dev); 2382 qeth_enable_hw_features(dev); 2383 2384 if (card->info.open_when_online) { 2385 card->info.open_when_online = 0; 2386 dev_open(dev, NULL); 2387 } 2388 rtnl_unlock(); 2389 } 2390 qeth_trace_features(card); 2391 /* let user_space know that device is online */ 2392 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 2393 mutex_unlock(&card->conf_mutex); 2394 mutex_unlock(&card->discipline_mutex); 2395 return 0; 2396 out_remove: 2397 qeth_l3_stop_card(card); 2398 ccw_device_set_offline(CARD_DDEV(card)); 2399 ccw_device_set_offline(CARD_WDEV(card)); 2400 ccw_device_set_offline(CARD_RDEV(card)); 2401 qdio_free(CARD_DDEV(card)); 2402 2403 mutex_unlock(&card->conf_mutex); 2404 mutex_unlock(&card->discipline_mutex); 2405 return rc; 2406 } 2407 2408 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev, 2409 int recovery_mode) 2410 { 2411 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 2412 int rc = 0, rc2 = 0, rc3 = 0; 2413 2414 mutex_lock(&card->discipline_mutex); 2415 mutex_lock(&card->conf_mutex); 2416 QETH_CARD_TEXT(card, 3, "setoffl"); 2417 2418 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 2419 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 2420 card->info.hwtrap = 1; 2421 } 2422 2423 rtnl_lock(); 2424 card->info.open_when_online = card->dev->flags & IFF_UP; 2425 dev_close(card->dev); 2426 netif_device_detach(card->dev); 2427 netif_carrier_off(card->dev); 2428 rtnl_unlock(); 2429 2430 qeth_l3_stop_card(card); 2431 if (card->options.cq == QETH_CQ_ENABLED) { 2432 rtnl_lock(); 2433 call_netdevice_notifiers(NETDEV_REBOOT, card->dev); 2434 rtnl_unlock(); 2435 } 2436 rc = ccw_device_set_offline(CARD_DDEV(card)); 2437 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 2438 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 2439 if (!rc) 2440 rc = (rc2) ? rc2 : rc3; 2441 if (rc) 2442 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 2443 qdio_free(CARD_DDEV(card)); 2444 2445 /* let user_space know that device is offline */ 2446 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 2447 mutex_unlock(&card->conf_mutex); 2448 mutex_unlock(&card->discipline_mutex); 2449 return 0; 2450 } 2451 2452 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev) 2453 { 2454 return __qeth_l3_set_offline(cgdev, 0); 2455 } 2456 2457 static int qeth_l3_recover(void *ptr) 2458 { 2459 struct qeth_card *card; 2460 int rc = 0; 2461 2462 card = (struct qeth_card *) ptr; 2463 QETH_CARD_TEXT(card, 2, "recover1"); 2464 QETH_CARD_HEX(card, 2, &card, sizeof(void *)); 2465 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 2466 return 0; 2467 QETH_CARD_TEXT(card, 2, "recover2"); 2468 dev_warn(&card->gdev->dev, 2469 "A recovery process has been started for the device\n"); 2470 __qeth_l3_set_offline(card->gdev, 1); 2471 rc = qeth_l3_set_online(card->gdev); 2472 if (!rc) 2473 dev_info(&card->gdev->dev, 2474 "Device successfully recovered!\n"); 2475 else { 2476 ccwgroup_set_offline(card->gdev); 2477 dev_warn(&card->gdev->dev, "The qeth device driver " 2478 "failed to recover an error on the device\n"); 2479 } 2480 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 2481 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 2482 return 0; 2483 } 2484 2485 /* Returns zero if the command is successfully "consumed" */ 2486 static int qeth_l3_control_event(struct qeth_card *card, 2487 struct qeth_ipa_cmd *cmd) 2488 { 2489 return 1; 2490 } 2491 2492 struct qeth_discipline qeth_l3_discipline = { 2493 .devtype = &qeth_l3_devtype, 2494 .process_rx_buffer = qeth_l3_process_inbound_buffer, 2495 .recover = qeth_l3_recover, 2496 .setup = qeth_l3_probe_device, 2497 .remove = qeth_l3_remove_device, 2498 .set_online = qeth_l3_set_online, 2499 .set_offline = qeth_l3_set_offline, 2500 .do_ioctl = qeth_l3_do_ioctl, 2501 .control_event_handler = qeth_l3_control_event, 2502 }; 2503 EXPORT_SYMBOL_GPL(qeth_l3_discipline); 2504 2505 static int qeth_l3_handle_ip_event(struct qeth_card *card, 2506 struct qeth_ipaddr *addr, 2507 unsigned long event) 2508 { 2509 switch (event) { 2510 case NETDEV_UP: 2511 qeth_l3_modify_ip(card, addr, true); 2512 return NOTIFY_OK; 2513 case NETDEV_DOWN: 2514 qeth_l3_modify_ip(card, addr, false); 2515 return NOTIFY_OK; 2516 default: 2517 return NOTIFY_DONE; 2518 } 2519 } 2520 2521 struct qeth_l3_ip_event_work { 2522 struct work_struct work; 2523 struct qeth_card *card; 2524 struct qeth_ipaddr addr; 2525 }; 2526 2527 #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work) 2528 2529 static void qeth_l3_add_ip_worker(struct work_struct *work) 2530 { 2531 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); 2532 2533 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true); 2534 kfree(work); 2535 } 2536 2537 static void qeth_l3_delete_ip_worker(struct work_struct *work) 2538 { 2539 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); 2540 2541 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false); 2542 kfree(work); 2543 } 2544 2545 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) 2546 { 2547 if (is_vlan_dev(dev)) 2548 dev = vlan_dev_real_dev(dev); 2549 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops || 2550 dev->netdev_ops == &qeth_l3_netdev_ops) 2551 return (struct qeth_card *) dev->ml_priv; 2552 return NULL; 2553 } 2554 2555 static int qeth_l3_ip_event(struct notifier_block *this, 2556 unsigned long event, void *ptr) 2557 { 2558 2559 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 2560 struct net_device *dev = ifa->ifa_dev->dev; 2561 struct qeth_ipaddr addr; 2562 struct qeth_card *card; 2563 2564 if (dev_net(dev) != &init_net) 2565 return NOTIFY_DONE; 2566 2567 card = qeth_l3_get_card_from_dev(dev); 2568 if (!card) 2569 return NOTIFY_DONE; 2570 QETH_CARD_TEXT(card, 3, "ipevent"); 2571 2572 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); 2573 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address); 2574 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask); 2575 2576 return qeth_l3_handle_ip_event(card, &addr, event); 2577 } 2578 2579 static struct notifier_block qeth_l3_ip_notifier = { 2580 qeth_l3_ip_event, 2581 NULL, 2582 }; 2583 2584 static int qeth_l3_ip6_event(struct notifier_block *this, 2585 unsigned long event, void *ptr) 2586 { 2587 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 2588 struct net_device *dev = ifa->idev->dev; 2589 struct qeth_l3_ip_event_work *ip_work; 2590 struct qeth_card *card; 2591 2592 if (event != NETDEV_UP && event != NETDEV_DOWN) 2593 return NOTIFY_DONE; 2594 2595 card = qeth_l3_get_card_from_dev(dev); 2596 if (!card) 2597 return NOTIFY_DONE; 2598 QETH_CARD_TEXT(card, 3, "ip6event"); 2599 if (!qeth_is_supported(card, IPA_IPV6)) 2600 return NOTIFY_DONE; 2601 2602 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC); 2603 if (!ip_work) 2604 return NOTIFY_DONE; 2605 2606 if (event == NETDEV_UP) 2607 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker); 2608 else 2609 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker); 2610 2611 ip_work->card = card; 2612 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL, 2613 QETH_PROT_IPV6); 2614 ip_work->addr.u.a6.addr = ifa->addr; 2615 ip_work->addr.u.a6.pfxlen = ifa->prefix_len; 2616 2617 queue_work(card->cmd_wq, &ip_work->work); 2618 return NOTIFY_OK; 2619 } 2620 2621 static struct notifier_block qeth_l3_ip6_notifier = { 2622 qeth_l3_ip6_event, 2623 NULL, 2624 }; 2625 2626 static int qeth_l3_register_notifiers(void) 2627 { 2628 int rc; 2629 2630 QETH_DBF_TEXT(SETUP, 5, "regnotif"); 2631 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); 2632 if (rc) 2633 return rc; 2634 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); 2635 if (rc) { 2636 unregister_inetaddr_notifier(&qeth_l3_ip_notifier); 2637 return rc; 2638 } 2639 return 0; 2640 } 2641 2642 static void qeth_l3_unregister_notifiers(void) 2643 { 2644 QETH_DBF_TEXT(SETUP, 5, "unregnot"); 2645 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); 2646 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); 2647 } 2648 2649 static int __init qeth_l3_init(void) 2650 { 2651 pr_info("register layer 3 discipline\n"); 2652 return qeth_l3_register_notifiers(); 2653 } 2654 2655 static void __exit qeth_l3_exit(void) 2656 { 2657 qeth_l3_unregister_notifiers(); 2658 pr_info("unregister layer 3 discipline\n"); 2659 } 2660 2661 module_init(qeth_l3_init); 2662 module_exit(qeth_l3_exit); 2663 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2664 MODULE_DESCRIPTION("qeth layer 3 discipline"); 2665 MODULE_LICENSE("GPL"); 2666