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/ip6_fib.h> 36 #include <net/iucv/af_iucv.h> 37 #include <linux/hashtable.h> 38 39 #include "qeth_l3.h" 40 41 42 static int qeth_l3_set_offline(struct ccwgroup_device *); 43 static void qeth_l3_set_rx_mode(struct net_device *dev); 44 static int qeth_l3_register_addr_entry(struct qeth_card *, 45 struct qeth_ipaddr *); 46 static int qeth_l3_deregister_addr_entry(struct qeth_card *, 47 struct qeth_ipaddr *); 48 49 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf) 50 { 51 sprintf(buf, "%pI4", addr); 52 } 53 54 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf) 55 { 56 sprintf(buf, "%pI6", addr); 57 } 58 59 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr, 60 char *buf) 61 { 62 if (proto == QETH_PROT_IPV4) 63 qeth_l3_ipaddr4_to_string(addr, buf); 64 else if (proto == QETH_PROT_IPV6) 65 qeth_l3_ipaddr6_to_string(addr, buf); 66 } 67 68 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot) 69 { 70 struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC); 71 72 if (addr) 73 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot); 74 return addr; 75 } 76 77 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card, 78 struct qeth_ipaddr *query) 79 { 80 u64 key = qeth_l3_ipaddr_hash(query); 81 struct qeth_ipaddr *addr; 82 83 if (query->is_multicast) { 84 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key) 85 if (qeth_l3_addr_match_ip(addr, query)) 86 return addr; 87 } else { 88 hash_for_each_possible(card->ip_htable, addr, hnode, key) 89 if (qeth_l3_addr_match_ip(addr, query)) 90 return addr; 91 } 92 return NULL; 93 } 94 95 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len) 96 { 97 int i, j; 98 u8 octet; 99 100 for (i = 0; i < len; ++i) { 101 octet = addr[i]; 102 for (j = 7; j >= 0; --j) { 103 bits[i*8 + j] = octet & 1; 104 octet >>= 1; 105 } 106 } 107 } 108 109 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, 110 struct qeth_ipaddr *addr) 111 { 112 struct qeth_ipato_entry *ipatoe; 113 u8 addr_bits[128] = {0, }; 114 u8 ipatoe_bits[128] = {0, }; 115 int rc = 0; 116 117 if (!card->ipato.enabled) 118 return false; 119 if (addr->type != QETH_IP_TYPE_NORMAL) 120 return false; 121 122 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits, 123 (addr->proto == QETH_PROT_IPV4)? 4:16); 124 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 125 if (addr->proto != ipatoe->proto) 126 continue; 127 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits, 128 (ipatoe->proto == QETH_PROT_IPV4) ? 129 4 : 16); 130 if (addr->proto == QETH_PROT_IPV4) 131 rc = !memcmp(addr_bits, ipatoe_bits, 132 min(32, ipatoe->mask_bits)); 133 else 134 rc = !memcmp(addr_bits, ipatoe_bits, 135 min(128, ipatoe->mask_bits)); 136 if (rc) 137 break; 138 } 139 /* invert? */ 140 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4) 141 rc = !rc; 142 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6) 143 rc = !rc; 144 145 return rc; 146 } 147 148 static int qeth_l3_delete_ip(struct qeth_card *card, 149 struct qeth_ipaddr *tmp_addr) 150 { 151 int rc = 0; 152 struct qeth_ipaddr *addr; 153 154 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 155 QETH_CARD_TEXT(card, 2, "delrxip"); 156 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 157 QETH_CARD_TEXT(card, 2, "delvipa"); 158 else 159 QETH_CARD_TEXT(card, 2, "delip"); 160 161 if (tmp_addr->proto == QETH_PROT_IPV4) 162 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 163 else { 164 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 165 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 166 } 167 168 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 169 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr)) 170 return -ENOENT; 171 172 addr->ref_counter--; 173 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0) 174 return rc; 175 if (addr->in_progress) 176 return -EINPROGRESS; 177 178 if (qeth_card_hw_is_reachable(card)) 179 rc = qeth_l3_deregister_addr_entry(card, addr); 180 181 hash_del(&addr->hnode); 182 kfree(addr); 183 184 return rc; 185 } 186 187 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) 188 { 189 int rc = 0; 190 struct qeth_ipaddr *addr; 191 char buf[40]; 192 193 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 194 QETH_CARD_TEXT(card, 2, "addrxip"); 195 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 196 QETH_CARD_TEXT(card, 2, "addvipa"); 197 else 198 QETH_CARD_TEXT(card, 2, "addip"); 199 200 if (tmp_addr->proto == QETH_PROT_IPV4) 201 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 202 else { 203 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 204 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 205 } 206 207 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 208 if (addr) { 209 if (tmp_addr->type != QETH_IP_TYPE_NORMAL) 210 return -EADDRINUSE; 211 if (qeth_l3_addr_match_all(addr, tmp_addr)) { 212 addr->ref_counter++; 213 return 0; 214 } 215 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u, 216 buf); 217 dev_warn(&card->gdev->dev, 218 "Registering IP address %s failed\n", buf); 219 return -EADDRINUSE; 220 } else { 221 addr = qeth_l3_get_addr_buffer(tmp_addr->proto); 222 if (!addr) 223 return -ENOMEM; 224 225 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr)); 226 addr->ref_counter = 1; 227 228 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) { 229 QETH_CARD_TEXT(card, 2, "tkovaddr"); 230 addr->ipato = 1; 231 } 232 hash_add(card->ip_htable, &addr->hnode, 233 qeth_l3_ipaddr_hash(addr)); 234 235 if (!qeth_card_hw_is_reachable(card)) { 236 addr->disp_flag = QETH_DISP_ADDR_ADD; 237 return 0; 238 } 239 240 /* qeth_l3_register_addr_entry can go to sleep 241 * if we add a IPV4 addr. It is caused by the reason 242 * that SETIP ipa cmd starts ARP staff for IPV4 addr. 243 * Thus we should unlock spinlock, and make a protection 244 * using in_progress variable to indicate that there is 245 * an hardware operation with this IPV4 address 246 */ 247 if (addr->proto == QETH_PROT_IPV4) { 248 addr->in_progress = 1; 249 mutex_unlock(&card->ip_lock); 250 rc = qeth_l3_register_addr_entry(card, addr); 251 mutex_lock(&card->ip_lock); 252 addr->in_progress = 0; 253 } else 254 rc = qeth_l3_register_addr_entry(card, addr); 255 256 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) { 257 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 258 if (addr->ref_counter < 1) { 259 qeth_l3_deregister_addr_entry(card, addr); 260 hash_del(&addr->hnode); 261 kfree(addr); 262 } 263 } else { 264 hash_del(&addr->hnode); 265 kfree(addr); 266 } 267 } 268 return rc; 269 } 270 271 static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr, 272 bool add) 273 { 274 int rc; 275 276 mutex_lock(&card->ip_lock); 277 rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr); 278 mutex_unlock(&card->ip_lock); 279 280 return rc; 281 } 282 283 static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card) 284 { 285 struct qeth_ipaddr *addr; 286 struct hlist_node *tmp; 287 int i; 288 289 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 290 hash_del(&addr->hnode); 291 kfree(addr); 292 } 293 } 294 295 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) 296 { 297 struct qeth_ipaddr *addr; 298 struct hlist_node *tmp; 299 int i; 300 301 QETH_CARD_TEXT(card, 4, "clearip"); 302 303 mutex_lock(&card->ip_lock); 304 305 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 306 if (!recover) { 307 hash_del(&addr->hnode); 308 kfree(addr); 309 continue; 310 } 311 addr->disp_flag = QETH_DISP_ADDR_ADD; 312 } 313 314 mutex_unlock(&card->ip_lock); 315 } 316 317 static void qeth_l3_recover_ip(struct qeth_card *card) 318 { 319 struct qeth_ipaddr *addr; 320 struct hlist_node *tmp; 321 int i; 322 int rc; 323 324 QETH_CARD_TEXT(card, 4, "recovrip"); 325 326 mutex_lock(&card->ip_lock); 327 328 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 329 if (addr->disp_flag == QETH_DISP_ADDR_ADD) { 330 if (addr->proto == QETH_PROT_IPV4) { 331 addr->in_progress = 1; 332 mutex_unlock(&card->ip_lock); 333 rc = qeth_l3_register_addr_entry(card, addr); 334 mutex_lock(&card->ip_lock); 335 addr->in_progress = 0; 336 } else 337 rc = qeth_l3_register_addr_entry(card, addr); 338 339 if (!rc) { 340 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 341 if (addr->ref_counter < 1) 342 qeth_l3_delete_ip(card, addr); 343 } else { 344 hash_del(&addr->hnode); 345 kfree(addr); 346 } 347 } 348 } 349 350 mutex_unlock(&card->ip_lock); 351 } 352 353 static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply, 354 unsigned long data) 355 { 356 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 357 358 switch (cmd->hdr.return_code) { 359 case IPA_RC_SUCCESS: 360 return 0; 361 case IPA_RC_DUPLICATE_IP_ADDRESS: 362 return -EADDRINUSE; 363 case IPA_RC_MC_ADDR_NOT_FOUND: 364 return -ENOENT; 365 case IPA_RC_LAN_OFFLINE: 366 return -ENETDOWN; 367 default: 368 return -EIO; 369 } 370 } 371 372 static int qeth_l3_send_setdelmc(struct qeth_card *card, 373 struct qeth_ipaddr *addr, int ipacmd) 374 { 375 struct qeth_cmd_buffer *iob; 376 struct qeth_ipa_cmd *cmd; 377 378 QETH_CARD_TEXT(card, 4, "setdelmc"); 379 380 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 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_get_ipacmd_buffer(card, ipacmd, addr->proto); 433 if (!iob) 434 return -ENOMEM; 435 cmd = __ipa_cmd(iob); 436 437 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP); 438 QETH_CARD_TEXT_(card, 4, "flags%02X", flags); 439 440 if (addr->proto == QETH_PROT_IPV6) { 441 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr, 442 sizeof(struct in6_addr)); 443 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen); 444 memcpy(cmd->data.setdelip6.mask, netmask, 445 sizeof(struct in6_addr)); 446 cmd->data.setdelip6.flags = flags; 447 } else { 448 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4); 449 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4); 450 cmd->data.setdelip4.flags = flags; 451 } 452 453 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); 454 } 455 456 static int qeth_l3_send_setrouting(struct qeth_card *card, 457 enum qeth_routing_types type, enum qeth_prot_versions prot) 458 { 459 int rc; 460 struct qeth_ipa_cmd *cmd; 461 struct qeth_cmd_buffer *iob; 462 463 QETH_CARD_TEXT(card, 4, "setroutg"); 464 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot); 465 if (!iob) 466 return -ENOMEM; 467 cmd = __ipa_cmd(iob); 468 cmd->data.setrtg.type = (type); 469 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 470 471 return rc; 472 } 473 474 static int qeth_l3_correct_routing_type(struct qeth_card *card, 475 enum qeth_routing_types *type, enum qeth_prot_versions prot) 476 { 477 if (card->info.type == QETH_CARD_TYPE_IQD) { 478 switch (*type) { 479 case NO_ROUTER: 480 case PRIMARY_CONNECTOR: 481 case SECONDARY_CONNECTOR: 482 case MULTICAST_ROUTER: 483 return 0; 484 default: 485 goto out_inval; 486 } 487 } else { 488 switch (*type) { 489 case NO_ROUTER: 490 case PRIMARY_ROUTER: 491 case SECONDARY_ROUTER: 492 return 0; 493 case MULTICAST_ROUTER: 494 if (qeth_is_ipafunc_supported(card, prot, 495 IPA_OSA_MC_ROUTER)) 496 return 0; 497 default: 498 goto out_inval; 499 } 500 } 501 out_inval: 502 *type = NO_ROUTER; 503 return -EINVAL; 504 } 505 506 int qeth_l3_setrouting_v4(struct qeth_card *card) 507 { 508 int rc; 509 510 QETH_CARD_TEXT(card, 3, "setrtg4"); 511 512 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, 513 QETH_PROT_IPV4); 514 if (rc) 515 return rc; 516 517 rc = qeth_l3_send_setrouting(card, card->options.route4.type, 518 QETH_PROT_IPV4); 519 if (rc) { 520 card->options.route4.type = NO_ROUTER; 521 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 522 rc, CARD_DEVID(card)); 523 } 524 return rc; 525 } 526 527 int qeth_l3_setrouting_v6(struct qeth_card *card) 528 { 529 int rc = 0; 530 531 QETH_CARD_TEXT(card, 3, "setrtg6"); 532 533 if (!qeth_is_supported(card, IPA_IPV6)) 534 return 0; 535 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type, 536 QETH_PROT_IPV6); 537 if (rc) 538 return rc; 539 540 rc = qeth_l3_send_setrouting(card, card->options.route6.type, 541 QETH_PROT_IPV6); 542 if (rc) { 543 card->options.route6.type = NO_ROUTER; 544 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 545 rc, CARD_DEVID(card)); 546 } 547 return rc; 548 } 549 550 /* 551 * IP address takeover related functions 552 */ 553 554 /** 555 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs. 556 * 557 * Caller must hold ip_lock. 558 */ 559 void qeth_l3_update_ipato(struct qeth_card *card) 560 { 561 struct qeth_ipaddr *addr; 562 unsigned int i; 563 564 hash_for_each(card->ip_htable, i, addr, hnode) { 565 if (addr->type != QETH_IP_TYPE_NORMAL) 566 continue; 567 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr); 568 } 569 } 570 571 static void qeth_l3_clear_ipato_list(struct qeth_card *card) 572 { 573 struct qeth_ipato_entry *ipatoe, *tmp; 574 575 mutex_lock(&card->ip_lock); 576 577 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 578 list_del(&ipatoe->entry); 579 kfree(ipatoe); 580 } 581 582 qeth_l3_update_ipato(card); 583 mutex_unlock(&card->ip_lock); 584 } 585 586 int qeth_l3_add_ipato_entry(struct qeth_card *card, 587 struct qeth_ipato_entry *new) 588 { 589 struct qeth_ipato_entry *ipatoe; 590 int rc = 0; 591 592 QETH_CARD_TEXT(card, 2, "addipato"); 593 594 mutex_lock(&card->ip_lock); 595 596 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 597 if (ipatoe->proto != new->proto) 598 continue; 599 if (!memcmp(ipatoe->addr, new->addr, 600 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) && 601 (ipatoe->mask_bits == new->mask_bits)) { 602 rc = -EEXIST; 603 break; 604 } 605 } 606 607 if (!rc) { 608 list_add_tail(&new->entry, &card->ipato.entries); 609 qeth_l3_update_ipato(card); 610 } 611 612 mutex_unlock(&card->ip_lock); 613 614 return rc; 615 } 616 617 int qeth_l3_del_ipato_entry(struct qeth_card *card, 618 enum qeth_prot_versions proto, u8 *addr, 619 int mask_bits) 620 { 621 struct qeth_ipato_entry *ipatoe, *tmp; 622 int rc = -ENOENT; 623 624 QETH_CARD_TEXT(card, 2, "delipato"); 625 626 mutex_lock(&card->ip_lock); 627 628 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 629 if (ipatoe->proto != proto) 630 continue; 631 if (!memcmp(ipatoe->addr, addr, 632 (proto == QETH_PROT_IPV4)? 4:16) && 633 (ipatoe->mask_bits == mask_bits)) { 634 list_del(&ipatoe->entry); 635 qeth_l3_update_ipato(card); 636 kfree(ipatoe); 637 rc = 0; 638 } 639 } 640 641 mutex_unlock(&card->ip_lock); 642 return rc; 643 } 644 645 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip, 646 enum qeth_ip_types type, 647 enum qeth_prot_versions proto) 648 { 649 struct qeth_ipaddr addr; 650 651 qeth_l3_init_ipaddr(&addr, type, proto); 652 if (proto == QETH_PROT_IPV4) 653 memcpy(&addr.u.a4.addr, ip, 4); 654 else 655 memcpy(&addr.u.a6.addr, ip, 16); 656 657 return qeth_l3_modify_ip(card, &addr, add); 658 } 659 660 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add) 661 { 662 struct qeth_ipaddr addr; 663 unsigned int i; 664 665 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 666 addr.u.a6.addr.s6_addr[0] = 0xfe; 667 addr.u.a6.addr.s6_addr[1] = 0x80; 668 for (i = 0; i < 8; i++) 669 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i]; 670 671 return qeth_l3_modify_ip(card, &addr, add); 672 } 673 674 static int qeth_l3_register_addr_entry(struct qeth_card *card, 675 struct qeth_ipaddr *addr) 676 { 677 char buf[50]; 678 int rc = 0; 679 int cnt = 3; 680 681 if (card->options.sniffer) 682 return 0; 683 684 if (addr->proto == QETH_PROT_IPV4) { 685 QETH_CARD_TEXT(card, 2, "setaddr4"); 686 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 687 } else if (addr->proto == QETH_PROT_IPV6) { 688 QETH_CARD_TEXT(card, 2, "setaddr6"); 689 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 690 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 691 } else { 692 QETH_CARD_TEXT(card, 2, "setaddr?"); 693 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 694 } 695 do { 696 if (addr->is_multicast) 697 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); 698 else 699 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP); 700 if (rc) 701 QETH_CARD_TEXT(card, 2, "failed"); 702 } while ((--cnt > 0) && rc); 703 if (rc) { 704 QETH_CARD_TEXT(card, 2, "FAILED"); 705 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); 706 dev_warn(&card->gdev->dev, 707 "Registering IP address %s failed\n", buf); 708 } 709 return rc; 710 } 711 712 static int qeth_l3_deregister_addr_entry(struct qeth_card *card, 713 struct qeth_ipaddr *addr) 714 { 715 int rc = 0; 716 717 if (card->options.sniffer) 718 return 0; 719 720 if (addr->proto == QETH_PROT_IPV4) { 721 QETH_CARD_TEXT(card, 2, "deladdr4"); 722 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 723 } else if (addr->proto == QETH_PROT_IPV6) { 724 QETH_CARD_TEXT(card, 2, "deladdr6"); 725 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 726 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 727 } else { 728 QETH_CARD_TEXT(card, 2, "deladdr?"); 729 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 730 } 731 if (addr->is_multicast) 732 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); 733 else 734 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP); 735 if (rc) 736 QETH_CARD_TEXT(card, 2, "failed"); 737 738 return rc; 739 } 740 741 static int qeth_l3_setadapter_parms(struct qeth_card *card) 742 { 743 int rc = 0; 744 745 QETH_DBF_TEXT(SETUP, 2, "setadprm"); 746 747 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { 748 rc = qeth_setadpparms_change_macaddr(card); 749 if (rc) 750 dev_warn(&card->gdev->dev, "Reading the adapter MAC" 751 " address failed\n"); 752 } 753 754 return rc; 755 } 756 757 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) 758 { 759 int rc; 760 761 QETH_CARD_TEXT(card, 3, "ipaarp"); 762 763 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 764 dev_info(&card->gdev->dev, 765 "ARP processing not supported on %s!\n", 766 QETH_CARD_IFNAME(card)); 767 return 0; 768 } 769 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 770 IPA_CMD_ASS_START, 0); 771 if (rc) { 772 dev_warn(&card->gdev->dev, 773 "Starting ARP processing support for %s failed\n", 774 QETH_CARD_IFNAME(card)); 775 } 776 return rc; 777 } 778 779 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 780 { 781 int rc; 782 783 QETH_CARD_TEXT(card, 3, "stsrcmac"); 784 785 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { 786 dev_info(&card->gdev->dev, 787 "Inbound source MAC-address not supported on %s\n", 788 QETH_CARD_IFNAME(card)); 789 return -EOPNOTSUPP; 790 } 791 792 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC, 793 IPA_CMD_ASS_START, 0); 794 if (rc) 795 dev_warn(&card->gdev->dev, 796 "Starting source MAC-address support for %s failed\n", 797 QETH_CARD_IFNAME(card)); 798 return rc; 799 } 800 801 static int qeth_l3_start_ipa_vlan(struct qeth_card *card) 802 { 803 int rc = 0; 804 805 QETH_CARD_TEXT(card, 3, "strtvlan"); 806 807 if (!qeth_is_supported(card, IPA_FULL_VLAN)) { 808 dev_info(&card->gdev->dev, 809 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card)); 810 return -EOPNOTSUPP; 811 } 812 813 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO, 814 IPA_CMD_ASS_START, 0); 815 if (rc) { 816 dev_warn(&card->gdev->dev, 817 "Starting VLAN support for %s failed\n", 818 QETH_CARD_IFNAME(card)); 819 } else { 820 dev_info(&card->gdev->dev, "VLAN enabled\n"); 821 } 822 return rc; 823 } 824 825 static int qeth_l3_start_ipa_multicast(struct qeth_card *card) 826 { 827 int rc; 828 829 QETH_CARD_TEXT(card, 3, "stmcast"); 830 831 if (!qeth_is_supported(card, IPA_MULTICASTING)) { 832 dev_info(&card->gdev->dev, 833 "Multicast not supported on %s\n", 834 QETH_CARD_IFNAME(card)); 835 return -EOPNOTSUPP; 836 } 837 838 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING, 839 IPA_CMD_ASS_START, 0); 840 if (rc) { 841 dev_warn(&card->gdev->dev, 842 "Starting multicast support for %s failed\n", 843 QETH_CARD_IFNAME(card)); 844 } else { 845 dev_info(&card->gdev->dev, "Multicast enabled\n"); 846 card->dev->flags |= IFF_MULTICAST; 847 } 848 return rc; 849 } 850 851 static int qeth_l3_softsetup_ipv6(struct qeth_card *card) 852 { 853 int rc; 854 855 QETH_CARD_TEXT(card, 3, "softipv6"); 856 857 if (card->info.type == QETH_CARD_TYPE_IQD) 858 goto out; 859 860 rc = qeth_send_simple_setassparms(card, IPA_IPV6, 861 IPA_CMD_ASS_START, 3); 862 if (rc) { 863 dev_err(&card->gdev->dev, 864 "Activating IPv6 support for %s failed\n", 865 QETH_CARD_IFNAME(card)); 866 return rc; 867 } 868 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, 869 IPA_CMD_ASS_START, 0); 870 if (rc) { 871 dev_err(&card->gdev->dev, 872 "Activating IPv6 support for %s failed\n", 873 QETH_CARD_IFNAME(card)); 874 return rc; 875 } 876 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU, 877 IPA_CMD_ASS_START, 0); 878 if (rc) { 879 dev_warn(&card->gdev->dev, 880 "Enabling the passthrough mode for %s failed\n", 881 QETH_CARD_IFNAME(card)); 882 return rc; 883 } 884 out: 885 dev_info(&card->gdev->dev, "IPV6 enabled\n"); 886 return 0; 887 } 888 889 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) 890 { 891 QETH_CARD_TEXT(card, 3, "strtipv6"); 892 893 if (!qeth_is_supported(card, IPA_IPV6)) { 894 dev_info(&card->gdev->dev, 895 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card)); 896 return 0; 897 } 898 return qeth_l3_softsetup_ipv6(card); 899 } 900 901 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) 902 { 903 int rc; 904 905 QETH_CARD_TEXT(card, 3, "stbrdcst"); 906 card->info.broadcast_capable = 0; 907 if (!qeth_is_supported(card, IPA_FILTERING)) { 908 dev_info(&card->gdev->dev, 909 "Broadcast not supported on %s\n", 910 QETH_CARD_IFNAME(card)); 911 rc = -EOPNOTSUPP; 912 goto out; 913 } 914 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 915 IPA_CMD_ASS_START, 0); 916 if (rc) { 917 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for " 918 "%s failed\n", QETH_CARD_IFNAME(card)); 919 goto out; 920 } 921 922 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 923 IPA_CMD_ASS_CONFIGURE, 1); 924 if (rc) { 925 dev_warn(&card->gdev->dev, 926 "Setting up broadcast filtering for %s failed\n", 927 QETH_CARD_IFNAME(card)); 928 goto out; 929 } 930 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; 931 dev_info(&card->gdev->dev, "Broadcast enabled\n"); 932 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 933 IPA_CMD_ASS_ENABLE, 1); 934 if (rc) { 935 dev_warn(&card->gdev->dev, "Setting up broadcast echo " 936 "filtering for %s failed\n", QETH_CARD_IFNAME(card)); 937 goto out; 938 } 939 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; 940 out: 941 if (card->info.broadcast_capable) 942 card->dev->flags |= IFF_BROADCAST; 943 else 944 card->dev->flags &= ~IFF_BROADCAST; 945 return rc; 946 } 947 948 static int qeth_l3_start_ipassists(struct qeth_card *card) 949 { 950 QETH_CARD_TEXT(card, 3, "strtipas"); 951 952 if (qeth_set_access_ctrl_online(card, 0)) 953 return -EIO; 954 qeth_l3_start_ipa_arp_processing(card); /* go on*/ 955 qeth_l3_start_ipa_source_mac(card); /* go on*/ 956 qeth_l3_start_ipa_vlan(card); /* go on*/ 957 qeth_l3_start_ipa_multicast(card); /* go on*/ 958 qeth_l3_start_ipa_ipv6(card); /* go on*/ 959 qeth_l3_start_ipa_broadcast(card); /* go on*/ 960 return 0; 961 } 962 963 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, 964 struct qeth_reply *reply, unsigned long data) 965 { 966 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 967 968 if (cmd->hdr.return_code) 969 return -EIO; 970 971 ether_addr_copy(card->dev->dev_addr, 972 cmd->data.create_destroy_addr.unique_id); 973 return 0; 974 } 975 976 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) 977 { 978 int rc = 0; 979 struct qeth_cmd_buffer *iob; 980 struct qeth_ipa_cmd *cmd; 981 982 QETH_DBF_TEXT(SETUP, 2, "hsrmac"); 983 984 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 985 QETH_PROT_IPV6); 986 if (!iob) 987 return -ENOMEM; 988 cmd = __ipa_cmd(iob); 989 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 990 card->info.unique_id; 991 992 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, 993 NULL); 994 return rc; 995 } 996 997 static int qeth_l3_get_unique_id_cb(struct qeth_card *card, 998 struct qeth_reply *reply, unsigned long data) 999 { 1000 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1001 1002 if (cmd->hdr.return_code == 0) { 1003 card->info.unique_id = *((__u16 *) 1004 &cmd->data.create_destroy_addr.unique_id[6]); 1005 return 0; 1006 } 1007 1008 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1009 UNIQUE_ID_NOT_BY_CARD; 1010 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n"); 1011 return -EIO; 1012 } 1013 1014 static int qeth_l3_get_unique_id(struct qeth_card *card) 1015 { 1016 int rc = 0; 1017 struct qeth_cmd_buffer *iob; 1018 struct qeth_ipa_cmd *cmd; 1019 1020 QETH_DBF_TEXT(SETUP, 2, "guniqeid"); 1021 1022 if (!qeth_is_supported(card, IPA_IPV6)) { 1023 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1024 UNIQUE_ID_NOT_BY_CARD; 1025 return 0; 1026 } 1027 1028 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 1029 QETH_PROT_IPV6); 1030 if (!iob) 1031 return -ENOMEM; 1032 cmd = __ipa_cmd(iob); 1033 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 1034 card->info.unique_id; 1035 1036 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL); 1037 return rc; 1038 } 1039 1040 static int 1041 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, 1042 unsigned long data) 1043 { 1044 struct qeth_ipa_cmd *cmd; 1045 __u16 rc; 1046 1047 QETH_DBF_TEXT(SETUP, 2, "diastrcb"); 1048 1049 cmd = (struct qeth_ipa_cmd *)data; 1050 rc = cmd->hdr.return_code; 1051 if (rc) 1052 QETH_CARD_TEXT_(card, 2, "dxter%x", rc); 1053 switch (cmd->data.diagass.action) { 1054 case QETH_DIAGS_CMD_TRACE_QUERY: 1055 break; 1056 case QETH_DIAGS_CMD_TRACE_DISABLE: 1057 switch (rc) { 1058 case 0: 1059 case IPA_RC_INVALID_SUBCMD: 1060 card->info.promisc_mode = SET_PROMISC_MODE_OFF; 1061 dev_info(&card->gdev->dev, "The HiperSockets network " 1062 "traffic analyzer is deactivated\n"); 1063 break; 1064 default: 1065 break; 1066 } 1067 break; 1068 case QETH_DIAGS_CMD_TRACE_ENABLE: 1069 switch (rc) { 1070 case 0: 1071 card->info.promisc_mode = SET_PROMISC_MODE_ON; 1072 dev_info(&card->gdev->dev, "The HiperSockets network " 1073 "traffic analyzer is activated\n"); 1074 break; 1075 case IPA_RC_HARDWARE_AUTH_ERROR: 1076 dev_warn(&card->gdev->dev, "The device is not " 1077 "authorized to run as a HiperSockets network " 1078 "traffic analyzer\n"); 1079 break; 1080 case IPA_RC_TRACE_ALREADY_ACTIVE: 1081 dev_warn(&card->gdev->dev, "A HiperSockets " 1082 "network traffic analyzer is already " 1083 "active in the HiperSockets LAN\n"); 1084 break; 1085 default: 1086 break; 1087 } 1088 break; 1089 default: 1090 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n", 1091 cmd->data.diagass.action, CARD_DEVID(card)); 1092 } 1093 1094 return rc ? -EIO : 0; 1095 } 1096 1097 static int 1098 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) 1099 { 1100 struct qeth_cmd_buffer *iob; 1101 struct qeth_ipa_cmd *cmd; 1102 1103 QETH_DBF_TEXT(SETUP, 2, "diagtrac"); 1104 1105 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 1106 if (!iob) 1107 return -ENOMEM; 1108 cmd = __ipa_cmd(iob); 1109 cmd->data.diagass.subcmd_len = 16; 1110 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE; 1111 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; 1112 cmd->data.diagass.action = diags_cmd; 1113 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL); 1114 } 1115 1116 static void 1117 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev) 1118 { 1119 struct ip_mc_list *im4; 1120 struct qeth_ipaddr *tmp, *ipm; 1121 1122 QETH_CARD_TEXT(card, 4, "addmc"); 1123 1124 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1125 if (!tmp) 1126 return; 1127 1128 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL; 1129 im4 = rcu_dereference(im4->next_rcu)) { 1130 ip_eth_mc_map(im4->multiaddr, tmp->mac); 1131 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr); 1132 tmp->is_multicast = 1; 1133 1134 ipm = qeth_l3_find_addr_by_ip(card, tmp); 1135 if (ipm) { 1136 /* for mcast, by-IP match means full match */ 1137 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1138 } else { 1139 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1140 if (!ipm) 1141 continue; 1142 ether_addr_copy(ipm->mac, tmp->mac); 1143 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr); 1144 ipm->is_multicast = 1; 1145 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1146 hash_add(card->ip_mc_htable, 1147 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1148 } 1149 } 1150 1151 kfree(tmp); 1152 } 1153 1154 /* called with rcu_read_lock */ 1155 static void qeth_l3_add_vlan_mc(struct qeth_card *card) 1156 { 1157 struct in_device *in_dev; 1158 u16 vid; 1159 1160 QETH_CARD_TEXT(card, 4, "addmcvl"); 1161 1162 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1163 return; 1164 1165 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1166 struct net_device *netdev; 1167 1168 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1169 vid); 1170 if (netdev == NULL || 1171 !(netdev->flags & IFF_UP)) 1172 continue; 1173 in_dev = __in_dev_get_rcu(netdev); 1174 if (!in_dev) 1175 continue; 1176 qeth_l3_add_mc_to_hash(card, in_dev); 1177 } 1178 } 1179 1180 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card) 1181 { 1182 struct in_device *in4_dev; 1183 1184 QETH_CARD_TEXT(card, 4, "chkmcv4"); 1185 1186 rcu_read_lock(); 1187 in4_dev = __in_dev_get_rcu(card->dev); 1188 if (in4_dev == NULL) 1189 goto unlock; 1190 qeth_l3_add_mc_to_hash(card, in4_dev); 1191 qeth_l3_add_vlan_mc(card); 1192 unlock: 1193 rcu_read_unlock(); 1194 } 1195 1196 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card, 1197 struct inet6_dev *in6_dev) 1198 { 1199 struct qeth_ipaddr *ipm; 1200 struct ifmcaddr6 *im6; 1201 struct qeth_ipaddr *tmp; 1202 1203 QETH_CARD_TEXT(card, 4, "addmc6"); 1204 1205 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1206 if (!tmp) 1207 return; 1208 1209 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { 1210 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac); 1211 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr, 1212 sizeof(struct in6_addr)); 1213 tmp->is_multicast = 1; 1214 1215 ipm = qeth_l3_find_addr_by_ip(card, tmp); 1216 if (ipm) { 1217 /* for mcast, by-IP match means full match */ 1218 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1219 continue; 1220 } 1221 1222 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1223 if (!ipm) 1224 continue; 1225 1226 ether_addr_copy(ipm->mac, tmp->mac); 1227 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr, 1228 sizeof(struct in6_addr)); 1229 ipm->is_multicast = 1; 1230 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1231 hash_add(card->ip_mc_htable, 1232 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1233 1234 } 1235 kfree(tmp); 1236 } 1237 1238 /* called with rcu_read_lock */ 1239 static void qeth_l3_add_vlan_mc6(struct qeth_card *card) 1240 { 1241 struct inet6_dev *in_dev; 1242 u16 vid; 1243 1244 QETH_CARD_TEXT(card, 4, "admc6vl"); 1245 1246 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1247 return; 1248 1249 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1250 struct net_device *netdev; 1251 1252 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1253 vid); 1254 if (netdev == NULL || 1255 !(netdev->flags & IFF_UP)) 1256 continue; 1257 in_dev = in6_dev_get(netdev); 1258 if (!in_dev) 1259 continue; 1260 read_lock_bh(&in_dev->lock); 1261 qeth_l3_add_mc6_to_hash(card, in_dev); 1262 read_unlock_bh(&in_dev->lock); 1263 in6_dev_put(in_dev); 1264 } 1265 } 1266 1267 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card) 1268 { 1269 struct inet6_dev *in6_dev; 1270 1271 QETH_CARD_TEXT(card, 4, "chkmcv6"); 1272 1273 if (!qeth_is_supported(card, IPA_IPV6)) 1274 return ; 1275 in6_dev = in6_dev_get(card->dev); 1276 if (!in6_dev) 1277 return; 1278 1279 rcu_read_lock(); 1280 read_lock_bh(&in6_dev->lock); 1281 qeth_l3_add_mc6_to_hash(card, in6_dev); 1282 qeth_l3_add_vlan_mc6(card); 1283 read_unlock_bh(&in6_dev->lock); 1284 rcu_read_unlock(); 1285 in6_dev_put(in6_dev); 1286 } 1287 1288 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, 1289 __be16 proto, u16 vid) 1290 { 1291 struct qeth_card *card = dev->ml_priv; 1292 1293 set_bit(vid, card->active_vlans); 1294 return 0; 1295 } 1296 1297 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, 1298 __be16 proto, u16 vid) 1299 { 1300 struct qeth_card *card = dev->ml_priv; 1301 1302 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 1303 1304 clear_bit(vid, card->active_vlans); 1305 qeth_l3_set_rx_mode(dev); 1306 return 0; 1307 } 1308 1309 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb, 1310 struct qeth_hdr *hdr) 1311 { 1312 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) { 1313 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 : 1314 ETH_P_IP; 1315 unsigned char tg_addr[ETH_ALEN]; 1316 1317 skb_reset_network_header(skb); 1318 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) { 1319 case QETH_CAST_MULTICAST: 1320 if (prot == ETH_P_IP) 1321 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr); 1322 else 1323 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr); 1324 QETH_CARD_STAT_INC(card, rx_multicast); 1325 break; 1326 case QETH_CAST_BROADCAST: 1327 ether_addr_copy(tg_addr, card->dev->broadcast); 1328 QETH_CARD_STAT_INC(card, rx_multicast); 1329 break; 1330 default: 1331 if (card->options.sniffer) 1332 skb->pkt_type = PACKET_OTHERHOST; 1333 ether_addr_copy(tg_addr, card->dev->dev_addr); 1334 } 1335 1336 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR) 1337 card->dev->header_ops->create(skb, card->dev, prot, 1338 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac, 1339 skb->len); 1340 else 1341 card->dev->header_ops->create(skb, card->dev, prot, 1342 tg_addr, "FAKELL", skb->len); 1343 } 1344 1345 skb->protocol = eth_type_trans(skb, card->dev); 1346 1347 /* copy VLAN tag from hdr into skb */ 1348 if (!card->options.sniffer && 1349 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME | 1350 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) { 1351 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ? 1352 hdr->hdr.l3.vlan_id : 1353 hdr->hdr.l3.next_hop.rx.vlan_id; 1354 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag); 1355 } 1356 1357 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags); 1358 } 1359 1360 static int qeth_l3_process_inbound_buffer(struct qeth_card *card, 1361 int budget, int *done) 1362 { 1363 struct net_device *dev = card->dev; 1364 int work_done = 0; 1365 struct sk_buff *skb; 1366 struct qeth_hdr *hdr; 1367 unsigned int len; 1368 __u16 magic; 1369 1370 *done = 0; 1371 WARN_ON_ONCE(!budget); 1372 while (budget) { 1373 skb = qeth_core_get_next_skb(card, 1374 &card->qdio.in_q->bufs[card->rx.b_index], 1375 &card->rx.b_element, &card->rx.e_offset, &hdr); 1376 if (!skb) { 1377 *done = 1; 1378 break; 1379 } 1380 switch (hdr->hdr.l3.id) { 1381 case QETH_HEADER_TYPE_LAYER3: 1382 magic = *(__u16 *)skb->data; 1383 if ((card->info.type == QETH_CARD_TYPE_IQD) && 1384 (magic == ETH_P_AF_IUCV)) { 1385 len = skb->len; 1386 dev_hard_header(skb, dev, ETH_P_AF_IUCV, 1387 dev->dev_addr, "FAKELL", len); 1388 skb->protocol = eth_type_trans(skb, dev); 1389 netif_receive_skb(skb); 1390 } else { 1391 qeth_l3_rebuild_skb(card, skb, hdr); 1392 len = skb->len; 1393 napi_gro_receive(&card->napi, skb); 1394 } 1395 break; 1396 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */ 1397 skb->protocol = eth_type_trans(skb, skb->dev); 1398 len = skb->len; 1399 netif_receive_skb(skb); 1400 break; 1401 default: 1402 dev_kfree_skb_any(skb); 1403 QETH_CARD_TEXT(card, 3, "inbunkno"); 1404 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr)); 1405 continue; 1406 } 1407 work_done++; 1408 budget--; 1409 QETH_CARD_STAT_INC(card, rx_packets); 1410 QETH_CARD_STAT_ADD(card, rx_bytes, len); 1411 } 1412 return work_done; 1413 } 1414 1415 static void qeth_l3_stop_card(struct qeth_card *card) 1416 { 1417 QETH_DBF_TEXT(SETUP, 2, "stopcard"); 1418 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1419 1420 qeth_set_allowed_threads(card, 0, 1); 1421 1422 cancel_work_sync(&card->rx_mode_work); 1423 qeth_l3_drain_rx_mode_cache(card); 1424 1425 if (card->options.sniffer && 1426 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) 1427 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1428 1429 if (card->state == CARD_STATE_SOFTSETUP) { 1430 qeth_l3_clear_ip_htable(card, 1); 1431 qeth_clear_ipacmd_list(card); 1432 card->state = CARD_STATE_HARDSETUP; 1433 } 1434 if (card->state == CARD_STATE_HARDSETUP) { 1435 qeth_qdio_clear_card(card, 0); 1436 qeth_clear_qdio_buffers(card); 1437 qeth_clear_working_pool_list(card); 1438 card->state = CARD_STATE_DOWN; 1439 } 1440 if (card->state == CARD_STATE_DOWN) { 1441 qeth_clear_cmd_buffers(&card->read); 1442 qeth_clear_cmd_buffers(&card->write); 1443 } 1444 1445 flush_workqueue(card->event_wq); 1446 } 1447 1448 /* 1449 * test for and Switch promiscuous mode (on or off) 1450 * either for guestlan or HiperSocket Sniffer 1451 */ 1452 static void 1453 qeth_l3_handle_promisc_mode(struct qeth_card *card) 1454 { 1455 struct net_device *dev = card->dev; 1456 1457 if (((dev->flags & IFF_PROMISC) && 1458 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 1459 (!(dev->flags & IFF_PROMISC) && 1460 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 1461 return; 1462 1463 if (card->info.guestlan) { /* Guestlan trace */ 1464 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1465 qeth_setadp_promisc_mode(card); 1466 } else if (card->options.sniffer && /* HiperSockets trace */ 1467 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 1468 if (dev->flags & IFF_PROMISC) { 1469 QETH_CARD_TEXT(card, 3, "+promisc"); 1470 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE); 1471 } else { 1472 QETH_CARD_TEXT(card, 3, "-promisc"); 1473 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1474 } 1475 } 1476 } 1477 1478 static void qeth_l3_rx_mode_work(struct work_struct *work) 1479 { 1480 struct qeth_card *card = container_of(work, struct qeth_card, 1481 rx_mode_work); 1482 struct qeth_ipaddr *addr; 1483 struct hlist_node *tmp; 1484 int i, rc; 1485 1486 QETH_CARD_TEXT(card, 3, "setmulti"); 1487 1488 if (!card->options.sniffer) { 1489 qeth_l3_add_multicast_ipv4(card); 1490 qeth_l3_add_multicast_ipv6(card); 1491 1492 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 1493 switch (addr->disp_flag) { 1494 case QETH_DISP_ADDR_DELETE: 1495 rc = qeth_l3_deregister_addr_entry(card, addr); 1496 if (!rc || rc == -ENOENT) { 1497 hash_del(&addr->hnode); 1498 kfree(addr); 1499 } 1500 break; 1501 case QETH_DISP_ADDR_ADD: 1502 rc = qeth_l3_register_addr_entry(card, addr); 1503 if (rc && rc != -ENETDOWN) { 1504 hash_del(&addr->hnode); 1505 kfree(addr); 1506 break; 1507 } 1508 addr->ref_counter = 1; 1509 /* fall through */ 1510 default: 1511 /* for next call to set_rx_mode(): */ 1512 addr->disp_flag = QETH_DISP_ADDR_DELETE; 1513 } 1514 } 1515 1516 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1517 return; 1518 } 1519 qeth_l3_handle_promisc_mode(card); 1520 } 1521 1522 static int qeth_l3_arp_makerc(u16 rc) 1523 { 1524 switch (rc) { 1525 case IPA_RC_SUCCESS: 1526 return 0; 1527 case QETH_IPA_ARP_RC_NOTSUPP: 1528 case QETH_IPA_ARP_RC_Q_NOTSUPP: 1529 return -EOPNOTSUPP; 1530 case QETH_IPA_ARP_RC_OUT_OF_RANGE: 1531 return -EINVAL; 1532 case QETH_IPA_ARP_RC_Q_NO_DATA: 1533 return -ENOENT; 1534 default: 1535 return -EIO; 1536 } 1537 } 1538 1539 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply, 1540 unsigned long data) 1541 { 1542 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1543 1544 qeth_setassparms_cb(card, reply, data); 1545 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1546 } 1547 1548 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) 1549 { 1550 struct qeth_cmd_buffer *iob; 1551 int rc; 1552 1553 QETH_CARD_TEXT(card, 3, "arpstnoe"); 1554 1555 /* 1556 * currently GuestLAN only supports the ARP assist function 1557 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; 1558 * thus we say EOPNOTSUPP for this ARP function 1559 */ 1560 if (card->info.guestlan) 1561 return -EOPNOTSUPP; 1562 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1563 return -EOPNOTSUPP; 1564 } 1565 1566 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1567 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 4, 1568 QETH_PROT_IPV4); 1569 if (!iob) 1570 return -ENOMEM; 1571 1572 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries; 1573 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1574 if (rc) 1575 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n", 1576 CARD_DEVID(card), rc); 1577 return rc; 1578 } 1579 1580 static __u32 get_arp_entry_size(struct qeth_card *card, 1581 struct qeth_arp_query_data *qdata, 1582 struct qeth_arp_entrytype *type, __u8 strip_entries) 1583 { 1584 __u32 rc; 1585 __u8 is_hsi; 1586 1587 is_hsi = qdata->reply_bits == 5; 1588 if (type->ip == QETHARP_IP_ADDR_V4) { 1589 QETH_CARD_TEXT(card, 4, "arpev4"); 1590 if (strip_entries) { 1591 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : 1592 sizeof(struct qeth_arp_qi_entry7_short); 1593 } else { 1594 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : 1595 sizeof(struct qeth_arp_qi_entry7); 1596 } 1597 } else if (type->ip == QETHARP_IP_ADDR_V6) { 1598 QETH_CARD_TEXT(card, 4, "arpev6"); 1599 if (strip_entries) { 1600 rc = is_hsi ? 1601 sizeof(struct qeth_arp_qi_entry5_short_ipv6) : 1602 sizeof(struct qeth_arp_qi_entry7_short_ipv6); 1603 } else { 1604 rc = is_hsi ? 1605 sizeof(struct qeth_arp_qi_entry5_ipv6) : 1606 sizeof(struct qeth_arp_qi_entry7_ipv6); 1607 } 1608 } else { 1609 QETH_CARD_TEXT(card, 4, "arpinv"); 1610 rc = 0; 1611 } 1612 1613 return rc; 1614 } 1615 1616 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) 1617 { 1618 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || 1619 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); 1620 } 1621 1622 static int qeth_l3_arp_query_cb(struct qeth_card *card, 1623 struct qeth_reply *reply, unsigned long data) 1624 { 1625 struct qeth_ipa_cmd *cmd; 1626 struct qeth_arp_query_data *qdata; 1627 struct qeth_arp_query_info *qinfo; 1628 int e; 1629 int entrybytes_done; 1630 int stripped_bytes; 1631 __u8 do_strip_entries; 1632 1633 QETH_CARD_TEXT(card, 3, "arpquecb"); 1634 1635 qinfo = (struct qeth_arp_query_info *) reply->param; 1636 cmd = (struct qeth_ipa_cmd *) data; 1637 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version); 1638 if (cmd->hdr.return_code) { 1639 QETH_CARD_TEXT(card, 4, "arpcberr"); 1640 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1641 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1642 } 1643 if (cmd->data.setassparms.hdr.return_code) { 1644 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 1645 QETH_CARD_TEXT(card, 4, "setaperr"); 1646 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1647 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1648 } 1649 qdata = &cmd->data.setassparms.data.query_arp; 1650 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries); 1651 1652 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; 1653 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; 1654 entrybytes_done = 0; 1655 for (e = 0; e < qdata->no_entries; ++e) { 1656 char *cur_entry; 1657 __u32 esize; 1658 struct qeth_arp_entrytype *etype; 1659 1660 cur_entry = &qdata->data + entrybytes_done; 1661 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; 1662 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) { 1663 QETH_CARD_TEXT(card, 4, "pmis"); 1664 QETH_CARD_TEXT_(card, 4, "%i", etype->ip); 1665 break; 1666 } 1667 esize = get_arp_entry_size(card, qdata, etype, 1668 do_strip_entries); 1669 QETH_CARD_TEXT_(card, 5, "esz%i", esize); 1670 if (!esize) 1671 break; 1672 1673 if ((qinfo->udata_len - qinfo->udata_offset) < esize) { 1674 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC); 1675 memset(qinfo->udata, 0, 4); 1676 return -ENOSPC; 1677 } 1678 1679 memcpy(qinfo->udata + qinfo->udata_offset, 1680 &qdata->data + entrybytes_done + stripped_bytes, 1681 esize); 1682 entrybytes_done += esize + stripped_bytes; 1683 qinfo->udata_offset += esize; 1684 ++qinfo->no_entries; 1685 } 1686 /* check if all replies received ... */ 1687 if (cmd->data.setassparms.hdr.seq_no < 1688 cmd->data.setassparms.hdr.number_of_replies) 1689 return 1; 1690 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries); 1691 memcpy(qinfo->udata, &qinfo->no_entries, 4); 1692 /* keep STRIP_ENTRIES flag so the user program can distinguish 1693 * stripped entries from normal ones */ 1694 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) 1695 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; 1696 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); 1697 QETH_CARD_TEXT_(card, 4, "rc%i", 0); 1698 return 0; 1699 } 1700 1701 static int qeth_l3_query_arp_cache_info(struct qeth_card *card, 1702 enum qeth_prot_versions prot, 1703 struct qeth_arp_query_info *qinfo) 1704 { 1705 struct qeth_cmd_buffer *iob; 1706 struct qeth_ipa_cmd *cmd; 1707 int rc; 1708 1709 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); 1710 1711 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1712 IPA_CMD_ASS_ARP_QUERY_INFO, 1713 sizeof(struct qeth_arp_query_data) 1714 - sizeof(char), 1715 prot); 1716 if (!iob) 1717 return -ENOMEM; 1718 cmd = __ipa_cmd(iob); 1719 cmd->data.setassparms.data.query_arp.request_bits = 0x000F; 1720 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo); 1721 if (rc) 1722 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n", 1723 CARD_DEVID(card), rc); 1724 return rc; 1725 } 1726 1727 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) 1728 { 1729 struct qeth_arp_query_info qinfo = {0, }; 1730 int rc; 1731 1732 QETH_CARD_TEXT(card, 3, "arpquery"); 1733 1734 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ 1735 IPA_ARP_PROCESSING)) { 1736 QETH_CARD_TEXT(card, 3, "arpqnsup"); 1737 rc = -EOPNOTSUPP; 1738 goto out; 1739 } 1740 /* get size of userspace buffer and mask_bits -> 6 bytes */ 1741 if (copy_from_user(&qinfo, udata, 6)) { 1742 rc = -EFAULT; 1743 goto out; 1744 } 1745 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 1746 if (!qinfo.udata) { 1747 rc = -ENOMEM; 1748 goto out; 1749 } 1750 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; 1751 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo); 1752 if (rc) { 1753 if (copy_to_user(udata, qinfo.udata, 4)) 1754 rc = -EFAULT; 1755 goto free_and_out; 1756 } 1757 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { 1758 /* fails in case of GuestLAN QDIO mode */ 1759 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo); 1760 } 1761 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) { 1762 QETH_CARD_TEXT(card, 4, "qactf"); 1763 rc = -EFAULT; 1764 goto free_and_out; 1765 } 1766 QETH_CARD_TEXT(card, 4, "qacts"); 1767 1768 free_and_out: 1769 kfree(qinfo.udata); 1770 out: 1771 return rc; 1772 } 1773 1774 static int qeth_l3_arp_modify_entry(struct qeth_card *card, 1775 struct qeth_arp_cache_entry *entry, 1776 enum qeth_arp_process_subcmds arp_cmd) 1777 { 1778 struct qeth_arp_cache_entry *cmd_entry; 1779 struct qeth_cmd_buffer *iob; 1780 int rc; 1781 1782 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY) 1783 QETH_CARD_TEXT(card, 3, "arpadd"); 1784 else 1785 QETH_CARD_TEXT(card, 3, "arpdel"); 1786 1787 /* 1788 * currently GuestLAN only supports the ARP assist function 1789 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; 1790 * thus we say EOPNOTSUPP for this ARP function 1791 */ 1792 if (card->info.guestlan) 1793 return -EOPNOTSUPP; 1794 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1795 return -EOPNOTSUPP; 1796 } 1797 1798 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd, 1799 sizeof(*cmd_entry), QETH_PROT_IPV4); 1800 if (!iob) 1801 return -ENOMEM; 1802 1803 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry; 1804 ether_addr_copy(cmd_entry->macaddr, entry->macaddr); 1805 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4); 1806 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1807 if (rc) 1808 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n", 1809 arp_cmd, CARD_DEVID(card), rc); 1810 return rc; 1811 } 1812 1813 static int qeth_l3_arp_flush_cache(struct qeth_card *card) 1814 { 1815 struct qeth_cmd_buffer *iob; 1816 int rc; 1817 1818 QETH_CARD_TEXT(card, 3, "arpflush"); 1819 1820 /* 1821 * currently GuestLAN only supports the ARP assist function 1822 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; 1823 * thus we say EOPNOTSUPP for this ARP function 1824 */ 1825 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD)) 1826 return -EOPNOTSUPP; 1827 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1828 return -EOPNOTSUPP; 1829 } 1830 1831 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1832 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0, 1833 QETH_PROT_IPV4); 1834 if (!iob) 1835 return -ENOMEM; 1836 1837 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1838 if (rc) 1839 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n", 1840 CARD_DEVID(card), rc); 1841 return rc; 1842 } 1843 1844 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 1845 { 1846 struct qeth_card *card = dev->ml_priv; 1847 struct qeth_arp_cache_entry arp_entry; 1848 enum qeth_arp_process_subcmds arp_cmd; 1849 int rc = 0; 1850 1851 switch (cmd) { 1852 case SIOC_QETH_ARP_SET_NO_ENTRIES: 1853 if (!capable(CAP_NET_ADMIN)) { 1854 rc = -EPERM; 1855 break; 1856 } 1857 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); 1858 break; 1859 case SIOC_QETH_ARP_QUERY_INFO: 1860 if (!capable(CAP_NET_ADMIN)) { 1861 rc = -EPERM; 1862 break; 1863 } 1864 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data); 1865 break; 1866 case SIOC_QETH_ARP_ADD_ENTRY: 1867 case SIOC_QETH_ARP_REMOVE_ENTRY: 1868 if (!capable(CAP_NET_ADMIN)) 1869 return -EPERM; 1870 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry))) 1871 return -EFAULT; 1872 1873 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ? 1874 IPA_CMD_ASS_ARP_ADD_ENTRY : 1875 IPA_CMD_ASS_ARP_REMOVE_ENTRY; 1876 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd); 1877 case SIOC_QETH_ARP_FLUSH_CACHE: 1878 if (!capable(CAP_NET_ADMIN)) { 1879 rc = -EPERM; 1880 break; 1881 } 1882 rc = qeth_l3_arp_flush_cache(card); 1883 break; 1884 default: 1885 rc = -EOPNOTSUPP; 1886 } 1887 return rc; 1888 } 1889 1890 static int qeth_l3_get_cast_type(struct sk_buff *skb) 1891 { 1892 struct neighbour *n = NULL; 1893 struct dst_entry *dst; 1894 1895 rcu_read_lock(); 1896 dst = skb_dst(skb); 1897 if (dst) 1898 n = dst_neigh_lookup_skb(dst, skb); 1899 if (n) { 1900 int cast_type = n->type; 1901 1902 rcu_read_unlock(); 1903 neigh_release(n); 1904 if ((cast_type == RTN_BROADCAST) || 1905 (cast_type == RTN_MULTICAST) || 1906 (cast_type == RTN_ANYCAST)) 1907 return cast_type; 1908 return RTN_UNICAST; 1909 } 1910 rcu_read_unlock(); 1911 1912 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */ 1913 switch (qeth_get_ip_version(skb)) { 1914 case 4: 1915 return ipv4_is_multicast(ip_hdr(skb)->daddr) ? 1916 RTN_MULTICAST : RTN_UNICAST; 1917 case 6: 1918 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ? 1919 RTN_MULTICAST : RTN_UNICAST; 1920 default: 1921 /* ... and MAC address */ 1922 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, 1923 skb->dev->broadcast)) 1924 return RTN_BROADCAST; 1925 if (is_multicast_ether_addr(eth_hdr(skb)->h_dest)) 1926 return RTN_MULTICAST; 1927 /* default to unicast */ 1928 return RTN_UNICAST; 1929 } 1930 } 1931 1932 static u8 qeth_l3_cast_type_to_flag(int cast_type) 1933 { 1934 if (cast_type == RTN_MULTICAST) 1935 return QETH_CAST_MULTICAST; 1936 if (cast_type == RTN_ANYCAST) 1937 return QETH_CAST_ANYCAST; 1938 if (cast_type == RTN_BROADCAST) 1939 return QETH_CAST_BROADCAST; 1940 return QETH_CAST_UNICAST; 1941 } 1942 1943 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue, 1944 struct qeth_hdr *hdr, struct sk_buff *skb, 1945 int ipv, int cast_type, unsigned int data_len) 1946 { 1947 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3; 1948 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 1949 struct qeth_card *card = queue->card; 1950 1951 hdr->hdr.l3.length = data_len; 1952 1953 if (skb_is_gso(skb)) { 1954 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO; 1955 } else { 1956 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 1957 1958 if (skb->protocol == htons(ETH_P_AF_IUCV)) { 1959 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST; 1960 l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80); 1961 memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2], 1962 iucv_trans_hdr(skb)->destUserID, 8); 1963 return; 1964 } 1965 1966 if (skb->ip_summed == CHECKSUM_PARTIAL) { 1967 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv); 1968 /* some HW requires combined L3+L4 csum offload: */ 1969 if (ipv == 4) 1970 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ; 1971 QETH_TXQ_STAT_INC(queue, skbs_csum); 1972 } 1973 } 1974 1975 if (ipv == 4 || IS_IQD(card)) { 1976 /* NETIF_F_HW_VLAN_CTAG_TX */ 1977 if (skb_vlan_tag_present(skb)) { 1978 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME; 1979 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); 1980 } 1981 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) { 1982 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG; 1983 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); 1984 } 1985 1986 /* OSA only: */ 1987 if (!ipv) { 1988 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU; 1989 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, 1990 skb->dev->broadcast)) 1991 hdr->hdr.l3.flags |= QETH_CAST_BROADCAST; 1992 else 1993 hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ? 1994 QETH_CAST_MULTICAST : QETH_CAST_UNICAST; 1995 return; 1996 } 1997 1998 hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type); 1999 rcu_read_lock(); 2000 if (ipv == 4) { 2001 struct rtable *rt = skb_rtable(skb); 2002 2003 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ? 2004 rt_nexthop(rt, ip_hdr(skb)->daddr) : 2005 ip_hdr(skb)->daddr; 2006 } else { 2007 /* IPv6 */ 2008 const struct rt6_info *rt = skb_rt6_info(skb); 2009 2010 if (rt && !ipv6_addr_any(&rt->rt6i_gateway)) 2011 l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway; 2012 else 2013 l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr; 2014 2015 hdr->hdr.l3.flags |= QETH_HDR_IPV6; 2016 if (card->info.type != QETH_CARD_TYPE_IQD) 2017 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU; 2018 } 2019 rcu_read_unlock(); 2020 } 2021 2022 static void qeth_l3_fixup_headers(struct sk_buff *skb) 2023 { 2024 struct iphdr *iph = ip_hdr(skb); 2025 2026 /* this is safe, IPv6 traffic takes a different path */ 2027 if (skb->ip_summed == CHECKSUM_PARTIAL) 2028 iph->check = 0; 2029 if (skb_is_gso(skb)) { 2030 iph->tot_len = 0; 2031 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr, 2032 iph->daddr, 0); 2033 } 2034 } 2035 2036 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb, 2037 struct qeth_qdio_out_q *queue, int ipv, int cast_type) 2038 { 2039 unsigned char eth_hdr[ETH_HLEN]; 2040 unsigned int hw_hdr_len; 2041 int rc; 2042 2043 /* re-use the L2 header area for the HW header: */ 2044 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) : 2045 sizeof(struct qeth_hdr); 2046 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN); 2047 if (rc) 2048 return rc; 2049 skb_copy_from_linear_data(skb, eth_hdr, ETH_HLEN); 2050 skb_pull(skb, ETH_HLEN); 2051 2052 qeth_l3_fixup_headers(skb); 2053 rc = qeth_xmit(card, skb, queue, ipv, cast_type, qeth_l3_fill_header); 2054 if (rc == -EBUSY) { 2055 /* roll back to ETH header */ 2056 skb_push(skb, ETH_HLEN); 2057 skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN); 2058 } 2059 return rc; 2060 } 2061 2062 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, 2063 struct net_device *dev) 2064 { 2065 int cast_type = qeth_l3_get_cast_type(skb); 2066 struct qeth_card *card = dev->ml_priv; 2067 int ipv = qeth_get_ip_version(skb); 2068 struct qeth_qdio_out_q *queue; 2069 int tx_bytes = skb->len; 2070 int rc; 2071 2072 queue = qeth_get_tx_queue(card, skb, ipv, cast_type); 2073 2074 if (IS_IQD(card)) { 2075 if (card->options.sniffer) 2076 goto tx_drop; 2077 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) || 2078 (card->options.cq == QETH_CQ_ENABLED && 2079 skb->protocol != htons(ETH_P_AF_IUCV))) 2080 goto tx_drop; 2081 } 2082 2083 if (cast_type == RTN_BROADCAST && !card->info.broadcast_capable) 2084 goto tx_drop; 2085 2086 netif_stop_queue(dev); 2087 2088 if (ipv == 4 || IS_IQD(card)) 2089 rc = qeth_l3_xmit(card, skb, queue, ipv, cast_type); 2090 else 2091 rc = qeth_xmit(card, skb, queue, ipv, cast_type, 2092 qeth_l3_fill_header); 2093 2094 if (!rc) { 2095 QETH_TXQ_STAT_INC(queue, tx_packets); 2096 QETH_TXQ_STAT_ADD(queue, tx_bytes, tx_bytes); 2097 netif_wake_queue(dev); 2098 return NETDEV_TX_OK; 2099 } else if (rc == -EBUSY) { 2100 return NETDEV_TX_BUSY; 2101 } /* else fall through */ 2102 2103 tx_drop: 2104 QETH_TXQ_STAT_INC(queue, tx_dropped); 2105 kfree_skb(skb); 2106 netif_wake_queue(dev); 2107 return NETDEV_TX_OK; 2108 } 2109 2110 static void qeth_l3_set_rx_mode(struct net_device *dev) 2111 { 2112 struct qeth_card *card = dev->ml_priv; 2113 2114 schedule_work(&card->rx_mode_work); 2115 } 2116 2117 /* 2118 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting 2119 * NOARP on the netdevice is no option because it also turns off neighbor 2120 * solicitation. For IPv4 we install a neighbor_setup function. We don't want 2121 * arp resolution but we want the hard header (packet socket will work 2122 * e.g. tcpdump) 2123 */ 2124 static int qeth_l3_neigh_setup_noarp(struct neighbour *n) 2125 { 2126 n->nud_state = NUD_NOARP; 2127 memcpy(n->ha, "FAKELL", 6); 2128 n->output = n->ops->connected_output; 2129 return 0; 2130 } 2131 2132 static int 2133 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) 2134 { 2135 if (np->tbl->family == AF_INET) 2136 np->neigh_setup = qeth_l3_neigh_setup_noarp; 2137 2138 return 0; 2139 } 2140 2141 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb, 2142 struct net_device *dev, 2143 netdev_features_t features) 2144 { 2145 if (qeth_get_ip_version(skb) != 4) 2146 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 2147 return qeth_features_check(skb, dev, features); 2148 } 2149 2150 static const struct net_device_ops qeth_l3_netdev_ops = { 2151 .ndo_open = qeth_open, 2152 .ndo_stop = qeth_stop, 2153 .ndo_get_stats64 = qeth_get_stats64, 2154 .ndo_start_xmit = qeth_l3_hard_start_xmit, 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_validate_addr = eth_validate_addr, 2172 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 2173 .ndo_do_ioctl = qeth_do_ioctl, 2174 .ndo_fix_features = qeth_fix_features, 2175 .ndo_set_features = qeth_set_features, 2176 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 2177 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 2178 .ndo_tx_timeout = qeth_tx_timeout, 2179 .ndo_neigh_setup = qeth_l3_neigh_setup, 2180 }; 2181 2182 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok) 2183 { 2184 unsigned int headroom; 2185 int rc; 2186 2187 if (card->info.type == QETH_CARD_TYPE_OSD || 2188 card->info.type == QETH_CARD_TYPE_OSX) { 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 (!card->info.guestlan) { 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 (card->info.type == QETH_CARD_TYPE_IQD) { 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_DBF_TEXT(SETUP, 2, "setonlin"); 2321 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 2322 2323 rc = qeth_core_hardsetup_card(card, &carrier_ok); 2324 if (rc) { 2325 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 2326 rc = -ENODEV; 2327 goto out_remove; 2328 } 2329 2330 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 2331 if (card->info.hwtrap && 2332 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 2333 card->info.hwtrap = 0; 2334 } else 2335 card->info.hwtrap = 0; 2336 2337 card->state = CARD_STATE_HARDSETUP; 2338 qeth_print_status_message(card); 2339 2340 /* softsetup */ 2341 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 2342 2343 rc = qeth_l3_setadapter_parms(card); 2344 if (rc) 2345 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 2346 if (!card->options.sniffer) { 2347 rc = qeth_l3_start_ipassists(card); 2348 if (rc) { 2349 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2350 goto out_remove; 2351 } 2352 rc = qeth_l3_setrouting_v4(card); 2353 if (rc) 2354 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc); 2355 rc = qeth_l3_setrouting_v6(card); 2356 if (rc) 2357 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc); 2358 } 2359 2360 rc = qeth_init_qdio_queues(card); 2361 if (rc) { 2362 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2363 rc = -ENODEV; 2364 goto out_remove; 2365 } 2366 card->state = CARD_STATE_SOFTSETUP; 2367 2368 qeth_set_allowed_threads(card, 0xffffffff, 0); 2369 qeth_l3_recover_ip(card); 2370 2371 if (!qeth_netdev_is_registered(dev)) { 2372 rc = qeth_l3_setup_netdev(card, carrier_ok); 2373 if (rc) 2374 goto out_remove; 2375 } else { 2376 rtnl_lock(); 2377 if (carrier_ok) 2378 netif_carrier_on(dev); 2379 else 2380 netif_carrier_off(dev); 2381 2382 netif_device_attach(dev); 2383 qeth_enable_hw_features(dev); 2384 2385 if (card->info.open_when_online) { 2386 card->info.open_when_online = 0; 2387 dev_open(dev, NULL); 2388 } 2389 rtnl_unlock(); 2390 } 2391 qeth_trace_features(card); 2392 /* let user_space know that device is online */ 2393 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 2394 mutex_unlock(&card->conf_mutex); 2395 mutex_unlock(&card->discipline_mutex); 2396 return 0; 2397 out_remove: 2398 qeth_l3_stop_card(card); 2399 ccw_device_set_offline(CARD_DDEV(card)); 2400 ccw_device_set_offline(CARD_WDEV(card)); 2401 ccw_device_set_offline(CARD_RDEV(card)); 2402 qdio_free(CARD_DDEV(card)); 2403 card->state = CARD_STATE_DOWN; 2404 2405 mutex_unlock(&card->conf_mutex); 2406 mutex_unlock(&card->discipline_mutex); 2407 return rc; 2408 } 2409 2410 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev, 2411 int recovery_mode) 2412 { 2413 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 2414 int rc = 0, rc2 = 0, rc3 = 0; 2415 2416 mutex_lock(&card->discipline_mutex); 2417 mutex_lock(&card->conf_mutex); 2418 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 2419 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 2420 2421 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 2422 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 2423 card->info.hwtrap = 1; 2424 } 2425 2426 rtnl_lock(); 2427 card->info.open_when_online = card->dev->flags & IFF_UP; 2428 dev_close(card->dev); 2429 netif_device_detach(card->dev); 2430 netif_carrier_off(card->dev); 2431 rtnl_unlock(); 2432 2433 qeth_l3_stop_card(card); 2434 if (card->options.cq == QETH_CQ_ENABLED) { 2435 rtnl_lock(); 2436 call_netdevice_notifiers(NETDEV_REBOOT, card->dev); 2437 rtnl_unlock(); 2438 } 2439 rc = ccw_device_set_offline(CARD_DDEV(card)); 2440 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 2441 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 2442 if (!rc) 2443 rc = (rc2) ? rc2 : rc3; 2444 if (rc) 2445 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2446 qdio_free(CARD_DDEV(card)); 2447 2448 /* let user_space know that device is offline */ 2449 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 2450 mutex_unlock(&card->conf_mutex); 2451 mutex_unlock(&card->discipline_mutex); 2452 return 0; 2453 } 2454 2455 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev) 2456 { 2457 return __qeth_l3_set_offline(cgdev, 0); 2458 } 2459 2460 static int qeth_l3_recover(void *ptr) 2461 { 2462 struct qeth_card *card; 2463 int rc = 0; 2464 2465 card = (struct qeth_card *) ptr; 2466 QETH_CARD_TEXT(card, 2, "recover1"); 2467 QETH_CARD_HEX(card, 2, &card, sizeof(void *)); 2468 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 2469 return 0; 2470 QETH_CARD_TEXT(card, 2, "recover2"); 2471 dev_warn(&card->gdev->dev, 2472 "A recovery process has been started for the device\n"); 2473 __qeth_l3_set_offline(card->gdev, 1); 2474 rc = qeth_l3_set_online(card->gdev); 2475 if (!rc) 2476 dev_info(&card->gdev->dev, 2477 "Device successfully recovered!\n"); 2478 else { 2479 ccwgroup_set_offline(card->gdev); 2480 dev_warn(&card->gdev->dev, "The qeth device driver " 2481 "failed to recover an error on the device\n"); 2482 } 2483 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 2484 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 2485 return 0; 2486 } 2487 2488 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev) 2489 { 2490 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2491 2492 qeth_set_allowed_threads(card, 0, 1); 2493 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 2494 if (gdev->state == CCWGROUP_OFFLINE) 2495 return 0; 2496 2497 qeth_l3_set_offline(gdev); 2498 return 0; 2499 } 2500 2501 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev) 2502 { 2503 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2504 int rc; 2505 2506 rc = qeth_l3_set_online(gdev); 2507 2508 qeth_set_allowed_threads(card, 0xffffffff, 0); 2509 if (rc) 2510 dev_warn(&card->gdev->dev, "The qeth device driver " 2511 "failed to recover an error on the device\n"); 2512 return rc; 2513 } 2514 2515 /* Returns zero if the command is successfully "consumed" */ 2516 static int qeth_l3_control_event(struct qeth_card *card, 2517 struct qeth_ipa_cmd *cmd) 2518 { 2519 return 1; 2520 } 2521 2522 struct qeth_discipline qeth_l3_discipline = { 2523 .devtype = &qeth_l3_devtype, 2524 .process_rx_buffer = qeth_l3_process_inbound_buffer, 2525 .recover = qeth_l3_recover, 2526 .setup = qeth_l3_probe_device, 2527 .remove = qeth_l3_remove_device, 2528 .set_online = qeth_l3_set_online, 2529 .set_offline = qeth_l3_set_offline, 2530 .freeze = qeth_l3_pm_suspend, 2531 .thaw = qeth_l3_pm_resume, 2532 .restore = qeth_l3_pm_resume, 2533 .do_ioctl = qeth_l3_do_ioctl, 2534 .control_event_handler = qeth_l3_control_event, 2535 }; 2536 EXPORT_SYMBOL_GPL(qeth_l3_discipline); 2537 2538 static int qeth_l3_handle_ip_event(struct qeth_card *card, 2539 struct qeth_ipaddr *addr, 2540 unsigned long event) 2541 { 2542 switch (event) { 2543 case NETDEV_UP: 2544 qeth_l3_modify_ip(card, addr, true); 2545 return NOTIFY_OK; 2546 case NETDEV_DOWN: 2547 qeth_l3_modify_ip(card, addr, false); 2548 return NOTIFY_OK; 2549 default: 2550 return NOTIFY_DONE; 2551 } 2552 } 2553 2554 struct qeth_l3_ip_event_work { 2555 struct work_struct work; 2556 struct qeth_card *card; 2557 struct qeth_ipaddr addr; 2558 }; 2559 2560 #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work) 2561 2562 static void qeth_l3_add_ip_worker(struct work_struct *work) 2563 { 2564 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); 2565 2566 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true); 2567 kfree(work); 2568 } 2569 2570 static void qeth_l3_delete_ip_worker(struct work_struct *work) 2571 { 2572 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); 2573 2574 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false); 2575 kfree(work); 2576 } 2577 2578 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) 2579 { 2580 if (is_vlan_dev(dev)) 2581 dev = vlan_dev_real_dev(dev); 2582 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops || 2583 dev->netdev_ops == &qeth_l3_netdev_ops) 2584 return (struct qeth_card *) dev->ml_priv; 2585 return NULL; 2586 } 2587 2588 static int qeth_l3_ip_event(struct notifier_block *this, 2589 unsigned long event, void *ptr) 2590 { 2591 2592 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 2593 struct net_device *dev = ifa->ifa_dev->dev; 2594 struct qeth_ipaddr addr; 2595 struct qeth_card *card; 2596 2597 if (dev_net(dev) != &init_net) 2598 return NOTIFY_DONE; 2599 2600 card = qeth_l3_get_card_from_dev(dev); 2601 if (!card) 2602 return NOTIFY_DONE; 2603 QETH_CARD_TEXT(card, 3, "ipevent"); 2604 2605 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); 2606 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address); 2607 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask); 2608 2609 return qeth_l3_handle_ip_event(card, &addr, event); 2610 } 2611 2612 static struct notifier_block qeth_l3_ip_notifier = { 2613 qeth_l3_ip_event, 2614 NULL, 2615 }; 2616 2617 static int qeth_l3_ip6_event(struct notifier_block *this, 2618 unsigned long event, void *ptr) 2619 { 2620 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 2621 struct net_device *dev = ifa->idev->dev; 2622 struct qeth_l3_ip_event_work *ip_work; 2623 struct qeth_card *card; 2624 2625 if (event != NETDEV_UP && event != NETDEV_DOWN) 2626 return NOTIFY_DONE; 2627 2628 card = qeth_l3_get_card_from_dev(dev); 2629 if (!card) 2630 return NOTIFY_DONE; 2631 QETH_CARD_TEXT(card, 3, "ip6event"); 2632 if (!qeth_is_supported(card, IPA_IPV6)) 2633 return NOTIFY_DONE; 2634 2635 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC); 2636 if (!ip_work) 2637 return NOTIFY_DONE; 2638 2639 if (event == NETDEV_UP) 2640 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker); 2641 else 2642 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker); 2643 2644 ip_work->card = card; 2645 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL, 2646 QETH_PROT_IPV6); 2647 ip_work->addr.u.a6.addr = ifa->addr; 2648 ip_work->addr.u.a6.pfxlen = ifa->prefix_len; 2649 2650 queue_work(card->cmd_wq, &ip_work->work); 2651 return NOTIFY_OK; 2652 } 2653 2654 static struct notifier_block qeth_l3_ip6_notifier = { 2655 qeth_l3_ip6_event, 2656 NULL, 2657 }; 2658 2659 static int qeth_l3_register_notifiers(void) 2660 { 2661 int rc; 2662 2663 QETH_DBF_TEXT(SETUP, 5, "regnotif"); 2664 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); 2665 if (rc) 2666 return rc; 2667 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); 2668 if (rc) { 2669 unregister_inetaddr_notifier(&qeth_l3_ip_notifier); 2670 return rc; 2671 } 2672 return 0; 2673 } 2674 2675 static void qeth_l3_unregister_notifiers(void) 2676 { 2677 QETH_DBF_TEXT(SETUP, 5, "unregnot"); 2678 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); 2679 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); 2680 } 2681 2682 static int __init qeth_l3_init(void) 2683 { 2684 pr_info("register layer 3 discipline\n"); 2685 return qeth_l3_register_notifiers(); 2686 } 2687 2688 static void __exit qeth_l3_exit(void) 2689 { 2690 qeth_l3_unregister_notifiers(); 2691 pr_info("unregister layer 3 discipline\n"); 2692 } 2693 2694 module_init(qeth_l3_init); 2695 module_exit(qeth_l3_exit); 2696 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2697 MODULE_DESCRIPTION("qeth layer 3 discipline"); 2698 MODULE_LICENSE("GPL"); 2699