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 spin_unlock_bh(&card->ip_lock); 250 rc = qeth_l3_register_addr_entry(card, addr); 251 spin_lock_bh(&card->ip_lock); 252 addr->in_progress = 0; 253 } else 254 rc = qeth_l3_register_addr_entry(card, addr); 255 256 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) || 257 (rc == IPA_RC_LAN_OFFLINE)) { 258 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 259 if (addr->ref_counter < 1) { 260 qeth_l3_deregister_addr_entry(card, addr); 261 hash_del(&addr->hnode); 262 kfree(addr); 263 } 264 } else { 265 hash_del(&addr->hnode); 266 kfree(addr); 267 } 268 } 269 return rc; 270 } 271 272 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) 273 { 274 struct qeth_ipaddr *addr; 275 struct hlist_node *tmp; 276 int i; 277 278 QETH_CARD_TEXT(card, 4, "clearip"); 279 280 spin_lock_bh(&card->ip_lock); 281 282 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 283 if (!recover) { 284 hash_del(&addr->hnode); 285 kfree(addr); 286 continue; 287 } 288 addr->disp_flag = QETH_DISP_ADDR_ADD; 289 } 290 291 spin_unlock_bh(&card->ip_lock); 292 293 spin_lock_bh(&card->mclock); 294 295 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 296 hash_del(&addr->hnode); 297 kfree(addr); 298 } 299 300 spin_unlock_bh(&card->mclock); 301 302 303 } 304 static void qeth_l3_recover_ip(struct qeth_card *card) 305 { 306 struct qeth_ipaddr *addr; 307 struct hlist_node *tmp; 308 int i; 309 int rc; 310 311 QETH_CARD_TEXT(card, 4, "recovrip"); 312 313 spin_lock_bh(&card->ip_lock); 314 315 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 316 if (addr->disp_flag == QETH_DISP_ADDR_ADD) { 317 if (addr->proto == QETH_PROT_IPV4) { 318 addr->in_progress = 1; 319 spin_unlock_bh(&card->ip_lock); 320 rc = qeth_l3_register_addr_entry(card, addr); 321 spin_lock_bh(&card->ip_lock); 322 addr->in_progress = 0; 323 } else 324 rc = qeth_l3_register_addr_entry(card, addr); 325 326 if (!rc) { 327 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 328 if (addr->ref_counter < 1) 329 qeth_l3_delete_ip(card, addr); 330 } else { 331 hash_del(&addr->hnode); 332 kfree(addr); 333 } 334 } 335 } 336 337 spin_unlock_bh(&card->ip_lock); 338 339 } 340 341 static int qeth_l3_send_setdelmc(struct qeth_card *card, 342 struct qeth_ipaddr *addr, int ipacmd) 343 { 344 int rc; 345 struct qeth_cmd_buffer *iob; 346 struct qeth_ipa_cmd *cmd; 347 348 QETH_CARD_TEXT(card, 4, "setdelmc"); 349 350 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 351 if (!iob) 352 return -ENOMEM; 353 cmd = __ipa_cmd(iob); 354 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac); 355 if (addr->proto == QETH_PROT_IPV6) 356 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr, 357 sizeof(struct in6_addr)); 358 else 359 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4); 360 361 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 362 363 return rc; 364 } 365 366 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len) 367 { 368 int i, j; 369 for (i = 0; i < 16; i++) { 370 j = (len) - (i * 8); 371 if (j >= 8) 372 netmask[i] = 0xff; 373 else if (j > 0) 374 netmask[i] = (u8)(0xFF00 >> j); 375 else 376 netmask[i] = 0; 377 } 378 } 379 380 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set) 381 { 382 switch (addr->type) { 383 case QETH_IP_TYPE_RXIP: 384 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 385 case QETH_IP_TYPE_VIPA: 386 return (set) ? QETH_IPA_SETIP_VIPA_FLAG : 387 QETH_IPA_DELIP_VIPA_FLAG; 388 default: 389 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 390 } 391 } 392 393 static int qeth_l3_send_setdelip(struct qeth_card *card, 394 struct qeth_ipaddr *addr, 395 enum qeth_ipa_cmds ipacmd) 396 { 397 struct qeth_cmd_buffer *iob; 398 struct qeth_ipa_cmd *cmd; 399 __u8 netmask[16]; 400 u32 flags; 401 402 QETH_CARD_TEXT(card, 4, "setdelip"); 403 404 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 405 if (!iob) 406 return -ENOMEM; 407 cmd = __ipa_cmd(iob); 408 409 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP); 410 QETH_CARD_TEXT_(card, 4, "flags%02X", flags); 411 412 if (addr->proto == QETH_PROT_IPV6) { 413 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr, 414 sizeof(struct in6_addr)); 415 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen); 416 memcpy(cmd->data.setdelip6.mask, netmask, 417 sizeof(struct in6_addr)); 418 cmd->data.setdelip6.flags = flags; 419 } else { 420 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4); 421 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4); 422 cmd->data.setdelip4.flags = flags; 423 } 424 425 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 426 } 427 428 static int qeth_l3_send_setrouting(struct qeth_card *card, 429 enum qeth_routing_types type, enum qeth_prot_versions prot) 430 { 431 int rc; 432 struct qeth_ipa_cmd *cmd; 433 struct qeth_cmd_buffer *iob; 434 435 QETH_CARD_TEXT(card, 4, "setroutg"); 436 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot); 437 if (!iob) 438 return -ENOMEM; 439 cmd = __ipa_cmd(iob); 440 cmd->data.setrtg.type = (type); 441 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 442 443 return rc; 444 } 445 446 static int qeth_l3_correct_routing_type(struct qeth_card *card, 447 enum qeth_routing_types *type, enum qeth_prot_versions prot) 448 { 449 if (card->info.type == QETH_CARD_TYPE_IQD) { 450 switch (*type) { 451 case NO_ROUTER: 452 case PRIMARY_CONNECTOR: 453 case SECONDARY_CONNECTOR: 454 case MULTICAST_ROUTER: 455 return 0; 456 default: 457 goto out_inval; 458 } 459 } else { 460 switch (*type) { 461 case NO_ROUTER: 462 case PRIMARY_ROUTER: 463 case SECONDARY_ROUTER: 464 return 0; 465 case MULTICAST_ROUTER: 466 if (qeth_is_ipafunc_supported(card, prot, 467 IPA_OSA_MC_ROUTER)) 468 return 0; 469 default: 470 goto out_inval; 471 } 472 } 473 out_inval: 474 *type = NO_ROUTER; 475 return -EINVAL; 476 } 477 478 int qeth_l3_setrouting_v4(struct qeth_card *card) 479 { 480 int rc; 481 482 QETH_CARD_TEXT(card, 3, "setrtg4"); 483 484 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, 485 QETH_PROT_IPV4); 486 if (rc) 487 return rc; 488 489 rc = qeth_l3_send_setrouting(card, card->options.route4.type, 490 QETH_PROT_IPV4); 491 if (rc) { 492 card->options.route4.type = NO_ROUTER; 493 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 494 rc, CARD_DEVID(card)); 495 } 496 return rc; 497 } 498 499 int qeth_l3_setrouting_v6(struct qeth_card *card) 500 { 501 int rc = 0; 502 503 QETH_CARD_TEXT(card, 3, "setrtg6"); 504 505 if (!qeth_is_supported(card, IPA_IPV6)) 506 return 0; 507 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type, 508 QETH_PROT_IPV6); 509 if (rc) 510 return rc; 511 512 rc = qeth_l3_send_setrouting(card, card->options.route6.type, 513 QETH_PROT_IPV6); 514 if (rc) { 515 card->options.route6.type = NO_ROUTER; 516 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 517 rc, CARD_DEVID(card)); 518 } 519 return rc; 520 } 521 522 /* 523 * IP address takeover related functions 524 */ 525 526 /** 527 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs. 528 * 529 * Caller must hold ip_lock. 530 */ 531 void qeth_l3_update_ipato(struct qeth_card *card) 532 { 533 struct qeth_ipaddr *addr; 534 unsigned int i; 535 536 hash_for_each(card->ip_htable, i, addr, hnode) { 537 if (addr->type != QETH_IP_TYPE_NORMAL) 538 continue; 539 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr); 540 } 541 } 542 543 static void qeth_l3_clear_ipato_list(struct qeth_card *card) 544 { 545 struct qeth_ipato_entry *ipatoe, *tmp; 546 547 spin_lock_bh(&card->ip_lock); 548 549 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 550 list_del(&ipatoe->entry); 551 kfree(ipatoe); 552 } 553 554 qeth_l3_update_ipato(card); 555 spin_unlock_bh(&card->ip_lock); 556 } 557 558 int qeth_l3_add_ipato_entry(struct qeth_card *card, 559 struct qeth_ipato_entry *new) 560 { 561 struct qeth_ipato_entry *ipatoe; 562 int rc = 0; 563 564 QETH_CARD_TEXT(card, 2, "addipato"); 565 566 spin_lock_bh(&card->ip_lock); 567 568 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 569 if (ipatoe->proto != new->proto) 570 continue; 571 if (!memcmp(ipatoe->addr, new->addr, 572 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) && 573 (ipatoe->mask_bits == new->mask_bits)) { 574 rc = -EEXIST; 575 break; 576 } 577 } 578 579 if (!rc) { 580 list_add_tail(&new->entry, &card->ipato.entries); 581 qeth_l3_update_ipato(card); 582 } 583 584 spin_unlock_bh(&card->ip_lock); 585 586 return rc; 587 } 588 589 int qeth_l3_del_ipato_entry(struct qeth_card *card, 590 enum qeth_prot_versions proto, u8 *addr, 591 int mask_bits) 592 { 593 struct qeth_ipato_entry *ipatoe, *tmp; 594 int rc = -ENOENT; 595 596 QETH_CARD_TEXT(card, 2, "delipato"); 597 598 spin_lock_bh(&card->ip_lock); 599 600 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 601 if (ipatoe->proto != proto) 602 continue; 603 if (!memcmp(ipatoe->addr, addr, 604 (proto == QETH_PROT_IPV4)? 4:16) && 605 (ipatoe->mask_bits == mask_bits)) { 606 list_del(&ipatoe->entry); 607 qeth_l3_update_ipato(card); 608 kfree(ipatoe); 609 rc = 0; 610 } 611 } 612 613 spin_unlock_bh(&card->ip_lock); 614 return rc; 615 } 616 617 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip, 618 enum qeth_ip_types type, 619 enum qeth_prot_versions proto) 620 { 621 struct qeth_ipaddr addr; 622 int rc; 623 624 qeth_l3_init_ipaddr(&addr, type, proto); 625 if (proto == QETH_PROT_IPV4) 626 memcpy(&addr.u.a4.addr, ip, 4); 627 else 628 memcpy(&addr.u.a6.addr, ip, 16); 629 630 spin_lock_bh(&card->ip_lock); 631 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr); 632 spin_unlock_bh(&card->ip_lock); 633 return rc; 634 } 635 636 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add) 637 { 638 struct qeth_ipaddr addr; 639 int rc, i; 640 641 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 642 addr.u.a6.addr.s6_addr[0] = 0xfe; 643 addr.u.a6.addr.s6_addr[1] = 0x80; 644 for (i = 0; i < 8; i++) 645 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i]; 646 647 spin_lock_bh(&card->ip_lock); 648 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr); 649 spin_unlock_bh(&card->ip_lock); 650 return rc; 651 } 652 653 static int qeth_l3_register_addr_entry(struct qeth_card *card, 654 struct qeth_ipaddr *addr) 655 { 656 char buf[50]; 657 int rc = 0; 658 int cnt = 3; 659 660 if (card->options.sniffer) 661 return 0; 662 663 if (addr->proto == QETH_PROT_IPV4) { 664 QETH_CARD_TEXT(card, 2, "setaddr4"); 665 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 666 } else if (addr->proto == QETH_PROT_IPV6) { 667 QETH_CARD_TEXT(card, 2, "setaddr6"); 668 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 669 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 670 } else { 671 QETH_CARD_TEXT(card, 2, "setaddr?"); 672 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 673 } 674 do { 675 if (addr->is_multicast) 676 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); 677 else 678 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP); 679 if (rc) 680 QETH_CARD_TEXT(card, 2, "failed"); 681 } while ((--cnt > 0) && rc); 682 if (rc) { 683 QETH_CARD_TEXT(card, 2, "FAILED"); 684 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); 685 dev_warn(&card->gdev->dev, 686 "Registering IP address %s failed\n", buf); 687 } 688 return rc; 689 } 690 691 static int qeth_l3_deregister_addr_entry(struct qeth_card *card, 692 struct qeth_ipaddr *addr) 693 { 694 int rc = 0; 695 696 if (card->options.sniffer) 697 return 0; 698 699 if (addr->proto == QETH_PROT_IPV4) { 700 QETH_CARD_TEXT(card, 2, "deladdr4"); 701 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 702 } else if (addr->proto == QETH_PROT_IPV6) { 703 QETH_CARD_TEXT(card, 2, "deladdr6"); 704 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 705 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 706 } else { 707 QETH_CARD_TEXT(card, 2, "deladdr?"); 708 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 709 } 710 if (addr->is_multicast) 711 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); 712 else 713 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP); 714 if (rc) 715 QETH_CARD_TEXT(card, 2, "failed"); 716 717 return rc; 718 } 719 720 static int qeth_l3_setadapter_parms(struct qeth_card *card) 721 { 722 int rc = 0; 723 724 QETH_DBF_TEXT(SETUP, 2, "setadprm"); 725 726 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { 727 rc = qeth_setadpparms_change_macaddr(card); 728 if (rc) 729 dev_warn(&card->gdev->dev, "Reading the adapter MAC" 730 " address failed\n"); 731 } 732 733 return rc; 734 } 735 736 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) 737 { 738 int rc; 739 740 QETH_CARD_TEXT(card, 3, "ipaarp"); 741 742 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 743 dev_info(&card->gdev->dev, 744 "ARP processing not supported on %s!\n", 745 QETH_CARD_IFNAME(card)); 746 return 0; 747 } 748 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 749 IPA_CMD_ASS_START, 0); 750 if (rc) { 751 dev_warn(&card->gdev->dev, 752 "Starting ARP processing support for %s failed\n", 753 QETH_CARD_IFNAME(card)); 754 } 755 return rc; 756 } 757 758 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 759 { 760 int rc; 761 762 QETH_CARD_TEXT(card, 3, "stsrcmac"); 763 764 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { 765 dev_info(&card->gdev->dev, 766 "Inbound source MAC-address not supported on %s\n", 767 QETH_CARD_IFNAME(card)); 768 return -EOPNOTSUPP; 769 } 770 771 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC, 772 IPA_CMD_ASS_START, 0); 773 if (rc) 774 dev_warn(&card->gdev->dev, 775 "Starting source MAC-address support for %s failed\n", 776 QETH_CARD_IFNAME(card)); 777 return rc; 778 } 779 780 static int qeth_l3_start_ipa_vlan(struct qeth_card *card) 781 { 782 int rc = 0; 783 784 QETH_CARD_TEXT(card, 3, "strtvlan"); 785 786 if (!qeth_is_supported(card, IPA_FULL_VLAN)) { 787 dev_info(&card->gdev->dev, 788 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card)); 789 return -EOPNOTSUPP; 790 } 791 792 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO, 793 IPA_CMD_ASS_START, 0); 794 if (rc) { 795 dev_warn(&card->gdev->dev, 796 "Starting VLAN support for %s failed\n", 797 QETH_CARD_IFNAME(card)); 798 } else { 799 dev_info(&card->gdev->dev, "VLAN enabled\n"); 800 } 801 return rc; 802 } 803 804 static int qeth_l3_start_ipa_multicast(struct qeth_card *card) 805 { 806 int rc; 807 808 QETH_CARD_TEXT(card, 3, "stmcast"); 809 810 if (!qeth_is_supported(card, IPA_MULTICASTING)) { 811 dev_info(&card->gdev->dev, 812 "Multicast not supported on %s\n", 813 QETH_CARD_IFNAME(card)); 814 return -EOPNOTSUPP; 815 } 816 817 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING, 818 IPA_CMD_ASS_START, 0); 819 if (rc) { 820 dev_warn(&card->gdev->dev, 821 "Starting multicast support for %s failed\n", 822 QETH_CARD_IFNAME(card)); 823 } else { 824 dev_info(&card->gdev->dev, "Multicast enabled\n"); 825 card->dev->flags |= IFF_MULTICAST; 826 } 827 return rc; 828 } 829 830 static int qeth_l3_softsetup_ipv6(struct qeth_card *card) 831 { 832 int rc; 833 834 QETH_CARD_TEXT(card, 3, "softipv6"); 835 836 if (card->info.type == QETH_CARD_TYPE_IQD) 837 goto out; 838 839 rc = qeth_send_simple_setassparms(card, IPA_IPV6, 840 IPA_CMD_ASS_START, 3); 841 if (rc) { 842 dev_err(&card->gdev->dev, 843 "Activating IPv6 support for %s failed\n", 844 QETH_CARD_IFNAME(card)); 845 return rc; 846 } 847 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, 848 IPA_CMD_ASS_START, 0); 849 if (rc) { 850 dev_err(&card->gdev->dev, 851 "Activating IPv6 support for %s failed\n", 852 QETH_CARD_IFNAME(card)); 853 return rc; 854 } 855 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU, 856 IPA_CMD_ASS_START, 0); 857 if (rc) { 858 dev_warn(&card->gdev->dev, 859 "Enabling the passthrough mode for %s failed\n", 860 QETH_CARD_IFNAME(card)); 861 return rc; 862 } 863 out: 864 dev_info(&card->gdev->dev, "IPV6 enabled\n"); 865 return 0; 866 } 867 868 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) 869 { 870 QETH_CARD_TEXT(card, 3, "strtipv6"); 871 872 if (!qeth_is_supported(card, IPA_IPV6)) { 873 dev_info(&card->gdev->dev, 874 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card)); 875 return 0; 876 } 877 return qeth_l3_softsetup_ipv6(card); 878 } 879 880 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) 881 { 882 int rc; 883 884 QETH_CARD_TEXT(card, 3, "stbrdcst"); 885 card->info.broadcast_capable = 0; 886 if (!qeth_is_supported(card, IPA_FILTERING)) { 887 dev_info(&card->gdev->dev, 888 "Broadcast not supported on %s\n", 889 QETH_CARD_IFNAME(card)); 890 rc = -EOPNOTSUPP; 891 goto out; 892 } 893 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 894 IPA_CMD_ASS_START, 0); 895 if (rc) { 896 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for " 897 "%s failed\n", QETH_CARD_IFNAME(card)); 898 goto out; 899 } 900 901 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 902 IPA_CMD_ASS_CONFIGURE, 1); 903 if (rc) { 904 dev_warn(&card->gdev->dev, 905 "Setting up broadcast filtering for %s failed\n", 906 QETH_CARD_IFNAME(card)); 907 goto out; 908 } 909 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; 910 dev_info(&card->gdev->dev, "Broadcast enabled\n"); 911 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 912 IPA_CMD_ASS_ENABLE, 1); 913 if (rc) { 914 dev_warn(&card->gdev->dev, "Setting up broadcast echo " 915 "filtering for %s failed\n", QETH_CARD_IFNAME(card)); 916 goto out; 917 } 918 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; 919 out: 920 if (card->info.broadcast_capable) 921 card->dev->flags |= IFF_BROADCAST; 922 else 923 card->dev->flags &= ~IFF_BROADCAST; 924 return rc; 925 } 926 927 static int qeth_l3_start_ipassists(struct qeth_card *card) 928 { 929 QETH_CARD_TEXT(card, 3, "strtipas"); 930 931 if (qeth_set_access_ctrl_online(card, 0)) 932 return -EIO; 933 qeth_l3_start_ipa_arp_processing(card); /* go on*/ 934 qeth_l3_start_ipa_source_mac(card); /* go on*/ 935 qeth_l3_start_ipa_vlan(card); /* go on*/ 936 qeth_l3_start_ipa_multicast(card); /* go on*/ 937 qeth_l3_start_ipa_ipv6(card); /* go on*/ 938 qeth_l3_start_ipa_broadcast(card); /* go on*/ 939 return 0; 940 } 941 942 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, 943 struct qeth_reply *reply, unsigned long data) 944 { 945 struct qeth_ipa_cmd *cmd; 946 947 cmd = (struct qeth_ipa_cmd *) data; 948 if (cmd->hdr.return_code == 0) 949 ether_addr_copy(card->dev->dev_addr, 950 cmd->data.create_destroy_addr.unique_id); 951 return 0; 952 } 953 954 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) 955 { 956 int rc = 0; 957 struct qeth_cmd_buffer *iob; 958 struct qeth_ipa_cmd *cmd; 959 960 QETH_DBF_TEXT(SETUP, 2, "hsrmac"); 961 962 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 963 QETH_PROT_IPV6); 964 if (!iob) 965 return -ENOMEM; 966 cmd = __ipa_cmd(iob); 967 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 968 card->info.unique_id; 969 970 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, 971 NULL); 972 return rc; 973 } 974 975 static int qeth_l3_get_unique_id_cb(struct qeth_card *card, 976 struct qeth_reply *reply, unsigned long data) 977 { 978 struct qeth_ipa_cmd *cmd; 979 980 cmd = (struct qeth_ipa_cmd *) data; 981 if (cmd->hdr.return_code == 0) 982 card->info.unique_id = *((__u16 *) 983 &cmd->data.create_destroy_addr.unique_id[6]); 984 else { 985 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 986 UNIQUE_ID_NOT_BY_CARD; 987 dev_warn(&card->gdev->dev, "The network adapter failed to " 988 "generate a unique ID\n"); 989 } 990 return 0; 991 } 992 993 static int qeth_l3_get_unique_id(struct qeth_card *card) 994 { 995 int rc = 0; 996 struct qeth_cmd_buffer *iob; 997 struct qeth_ipa_cmd *cmd; 998 999 QETH_DBF_TEXT(SETUP, 2, "guniqeid"); 1000 1001 if (!qeth_is_supported(card, IPA_IPV6)) { 1002 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1003 UNIQUE_ID_NOT_BY_CARD; 1004 return 0; 1005 } 1006 1007 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 1008 QETH_PROT_IPV6); 1009 if (!iob) 1010 return -ENOMEM; 1011 cmd = __ipa_cmd(iob); 1012 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 1013 card->info.unique_id; 1014 1015 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL); 1016 return rc; 1017 } 1018 1019 static int 1020 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, 1021 unsigned long data) 1022 { 1023 struct qeth_ipa_cmd *cmd; 1024 __u16 rc; 1025 1026 QETH_DBF_TEXT(SETUP, 2, "diastrcb"); 1027 1028 cmd = (struct qeth_ipa_cmd *)data; 1029 rc = cmd->hdr.return_code; 1030 if (rc) 1031 QETH_CARD_TEXT_(card, 2, "dxter%x", rc); 1032 switch (cmd->data.diagass.action) { 1033 case QETH_DIAGS_CMD_TRACE_QUERY: 1034 break; 1035 case QETH_DIAGS_CMD_TRACE_DISABLE: 1036 switch (rc) { 1037 case 0: 1038 case IPA_RC_INVALID_SUBCMD: 1039 card->info.promisc_mode = SET_PROMISC_MODE_OFF; 1040 dev_info(&card->gdev->dev, "The HiperSockets network " 1041 "traffic analyzer is deactivated\n"); 1042 break; 1043 default: 1044 break; 1045 } 1046 break; 1047 case QETH_DIAGS_CMD_TRACE_ENABLE: 1048 switch (rc) { 1049 case 0: 1050 card->info.promisc_mode = SET_PROMISC_MODE_ON; 1051 dev_info(&card->gdev->dev, "The HiperSockets network " 1052 "traffic analyzer is activated\n"); 1053 break; 1054 case IPA_RC_HARDWARE_AUTH_ERROR: 1055 dev_warn(&card->gdev->dev, "The device is not " 1056 "authorized to run as a HiperSockets network " 1057 "traffic analyzer\n"); 1058 break; 1059 case IPA_RC_TRACE_ALREADY_ACTIVE: 1060 dev_warn(&card->gdev->dev, "A HiperSockets " 1061 "network traffic analyzer is already " 1062 "active in the HiperSockets LAN\n"); 1063 break; 1064 default: 1065 break; 1066 } 1067 break; 1068 default: 1069 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n", 1070 cmd->data.diagass.action, CARD_DEVID(card)); 1071 } 1072 1073 return 0; 1074 } 1075 1076 static int 1077 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) 1078 { 1079 struct qeth_cmd_buffer *iob; 1080 struct qeth_ipa_cmd *cmd; 1081 1082 QETH_DBF_TEXT(SETUP, 2, "diagtrac"); 1083 1084 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 1085 if (!iob) 1086 return -ENOMEM; 1087 cmd = __ipa_cmd(iob); 1088 cmd->data.diagass.subcmd_len = 16; 1089 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE; 1090 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; 1091 cmd->data.diagass.action = diags_cmd; 1092 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL); 1093 } 1094 1095 static void 1096 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev) 1097 { 1098 struct ip_mc_list *im4; 1099 struct qeth_ipaddr *tmp, *ipm; 1100 1101 QETH_CARD_TEXT(card, 4, "addmc"); 1102 1103 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1104 if (!tmp) 1105 return; 1106 1107 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL; 1108 im4 = rcu_dereference(im4->next_rcu)) { 1109 ip_eth_mc_map(im4->multiaddr, tmp->mac); 1110 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr); 1111 tmp->is_multicast = 1; 1112 1113 ipm = qeth_l3_find_addr_by_ip(card, tmp); 1114 if (ipm) { 1115 /* for mcast, by-IP match means full match */ 1116 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1117 } else { 1118 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1119 if (!ipm) 1120 continue; 1121 ether_addr_copy(ipm->mac, tmp->mac); 1122 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr); 1123 ipm->is_multicast = 1; 1124 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1125 hash_add(card->ip_mc_htable, 1126 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1127 } 1128 } 1129 1130 kfree(tmp); 1131 } 1132 1133 /* called with rcu_read_lock */ 1134 static void qeth_l3_add_vlan_mc(struct qeth_card *card) 1135 { 1136 struct in_device *in_dev; 1137 u16 vid; 1138 1139 QETH_CARD_TEXT(card, 4, "addmcvl"); 1140 1141 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1142 return; 1143 1144 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1145 struct net_device *netdev; 1146 1147 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1148 vid); 1149 if (netdev == NULL || 1150 !(netdev->flags & IFF_UP)) 1151 continue; 1152 in_dev = __in_dev_get_rcu(netdev); 1153 if (!in_dev) 1154 continue; 1155 qeth_l3_add_mc_to_hash(card, in_dev); 1156 } 1157 } 1158 1159 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card) 1160 { 1161 struct in_device *in4_dev; 1162 1163 QETH_CARD_TEXT(card, 4, "chkmcv4"); 1164 1165 rcu_read_lock(); 1166 in4_dev = __in_dev_get_rcu(card->dev); 1167 if (in4_dev == NULL) 1168 goto unlock; 1169 qeth_l3_add_mc_to_hash(card, in4_dev); 1170 qeth_l3_add_vlan_mc(card); 1171 unlock: 1172 rcu_read_unlock(); 1173 } 1174 1175 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card, 1176 struct inet6_dev *in6_dev) 1177 { 1178 struct qeth_ipaddr *ipm; 1179 struct ifmcaddr6 *im6; 1180 struct qeth_ipaddr *tmp; 1181 1182 QETH_CARD_TEXT(card, 4, "addmc6"); 1183 1184 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1185 if (!tmp) 1186 return; 1187 1188 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { 1189 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac); 1190 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr, 1191 sizeof(struct in6_addr)); 1192 tmp->is_multicast = 1; 1193 1194 ipm = qeth_l3_find_addr_by_ip(card, tmp); 1195 if (ipm) { 1196 /* for mcast, by-IP match means full match */ 1197 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1198 continue; 1199 } 1200 1201 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1202 if (!ipm) 1203 continue; 1204 1205 ether_addr_copy(ipm->mac, tmp->mac); 1206 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr, 1207 sizeof(struct in6_addr)); 1208 ipm->is_multicast = 1; 1209 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1210 hash_add(card->ip_mc_htable, 1211 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1212 1213 } 1214 kfree(tmp); 1215 } 1216 1217 /* called with rcu_read_lock */ 1218 static void qeth_l3_add_vlan_mc6(struct qeth_card *card) 1219 { 1220 struct inet6_dev *in_dev; 1221 u16 vid; 1222 1223 QETH_CARD_TEXT(card, 4, "admc6vl"); 1224 1225 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1226 return; 1227 1228 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1229 struct net_device *netdev; 1230 1231 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1232 vid); 1233 if (netdev == NULL || 1234 !(netdev->flags & IFF_UP)) 1235 continue; 1236 in_dev = in6_dev_get(netdev); 1237 if (!in_dev) 1238 continue; 1239 read_lock_bh(&in_dev->lock); 1240 qeth_l3_add_mc6_to_hash(card, in_dev); 1241 read_unlock_bh(&in_dev->lock); 1242 in6_dev_put(in_dev); 1243 } 1244 } 1245 1246 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card) 1247 { 1248 struct inet6_dev *in6_dev; 1249 1250 QETH_CARD_TEXT(card, 4, "chkmcv6"); 1251 1252 if (!qeth_is_supported(card, IPA_IPV6)) 1253 return ; 1254 in6_dev = in6_dev_get(card->dev); 1255 if (!in6_dev) 1256 return; 1257 1258 rcu_read_lock(); 1259 read_lock_bh(&in6_dev->lock); 1260 qeth_l3_add_mc6_to_hash(card, in6_dev); 1261 qeth_l3_add_vlan_mc6(card); 1262 read_unlock_bh(&in6_dev->lock); 1263 rcu_read_unlock(); 1264 in6_dev_put(in6_dev); 1265 } 1266 1267 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, 1268 __be16 proto, u16 vid) 1269 { 1270 struct qeth_card *card = dev->ml_priv; 1271 1272 set_bit(vid, card->active_vlans); 1273 return 0; 1274 } 1275 1276 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, 1277 __be16 proto, u16 vid) 1278 { 1279 struct qeth_card *card = dev->ml_priv; 1280 1281 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 1282 1283 clear_bit(vid, card->active_vlans); 1284 qeth_l3_set_rx_mode(dev); 1285 return 0; 1286 } 1287 1288 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb, 1289 struct qeth_hdr *hdr) 1290 { 1291 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) { 1292 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 : 1293 ETH_P_IP; 1294 unsigned char tg_addr[ETH_ALEN]; 1295 1296 skb_reset_network_header(skb); 1297 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) { 1298 case QETH_CAST_MULTICAST: 1299 if (prot == ETH_P_IP) 1300 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr); 1301 else 1302 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr); 1303 1304 card->stats.multicast++; 1305 break; 1306 case QETH_CAST_BROADCAST: 1307 ether_addr_copy(tg_addr, card->dev->broadcast); 1308 card->stats.multicast++; 1309 break; 1310 default: 1311 if (card->options.sniffer) 1312 skb->pkt_type = PACKET_OTHERHOST; 1313 ether_addr_copy(tg_addr, card->dev->dev_addr); 1314 } 1315 1316 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR) 1317 card->dev->header_ops->create(skb, card->dev, prot, 1318 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac, 1319 skb->len); 1320 else 1321 card->dev->header_ops->create(skb, card->dev, prot, 1322 tg_addr, "FAKELL", skb->len); 1323 } 1324 1325 skb->protocol = eth_type_trans(skb, card->dev); 1326 1327 /* copy VLAN tag from hdr into skb */ 1328 if (!card->options.sniffer && 1329 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME | 1330 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) { 1331 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ? 1332 hdr->hdr.l3.vlan_id : 1333 hdr->hdr.l3.next_hop.rx.vlan_id; 1334 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag); 1335 } 1336 1337 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags); 1338 } 1339 1340 static int qeth_l3_process_inbound_buffer(struct qeth_card *card, 1341 int budget, int *done) 1342 { 1343 struct net_device *dev = card->dev; 1344 int work_done = 0; 1345 struct sk_buff *skb; 1346 struct qeth_hdr *hdr; 1347 unsigned int len; 1348 __u16 magic; 1349 1350 *done = 0; 1351 WARN_ON_ONCE(!budget); 1352 while (budget) { 1353 skb = qeth_core_get_next_skb(card, 1354 &card->qdio.in_q->bufs[card->rx.b_index], 1355 &card->rx.b_element, &card->rx.e_offset, &hdr); 1356 if (!skb) { 1357 *done = 1; 1358 break; 1359 } 1360 switch (hdr->hdr.l3.id) { 1361 case QETH_HEADER_TYPE_LAYER3: 1362 magic = *(__u16 *)skb->data; 1363 if ((card->info.type == QETH_CARD_TYPE_IQD) && 1364 (magic == ETH_P_AF_IUCV)) { 1365 len = skb->len; 1366 dev_hard_header(skb, dev, ETH_P_AF_IUCV, 1367 dev->dev_addr, "FAKELL", len); 1368 skb->protocol = eth_type_trans(skb, dev); 1369 netif_receive_skb(skb); 1370 } else { 1371 qeth_l3_rebuild_skb(card, skb, hdr); 1372 len = skb->len; 1373 napi_gro_receive(&card->napi, skb); 1374 } 1375 break; 1376 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */ 1377 skb->protocol = eth_type_trans(skb, skb->dev); 1378 len = skb->len; 1379 netif_receive_skb(skb); 1380 break; 1381 default: 1382 dev_kfree_skb_any(skb); 1383 QETH_CARD_TEXT(card, 3, "inbunkno"); 1384 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr)); 1385 continue; 1386 } 1387 work_done++; 1388 budget--; 1389 card->stats.rx_packets++; 1390 card->stats.rx_bytes += len; 1391 } 1392 return work_done; 1393 } 1394 1395 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode) 1396 { 1397 QETH_DBF_TEXT(SETUP, 2, "stopcard"); 1398 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1399 1400 qeth_set_allowed_threads(card, 0, 1); 1401 if (card->options.sniffer && 1402 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) 1403 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1404 if (card->read.state == CH_STATE_UP && 1405 card->write.state == CH_STATE_UP && 1406 (card->state == CARD_STATE_UP)) { 1407 if (recovery_mode) 1408 qeth_stop(card->dev); 1409 else { 1410 rtnl_lock(); 1411 dev_close(card->dev); 1412 rtnl_unlock(); 1413 } 1414 card->state = CARD_STATE_SOFTSETUP; 1415 } 1416 if (card->state == CARD_STATE_SOFTSETUP) { 1417 qeth_l3_clear_ip_htable(card, 1); 1418 qeth_clear_ipacmd_list(card); 1419 card->state = CARD_STATE_HARDSETUP; 1420 } 1421 if (card->state == CARD_STATE_HARDSETUP) { 1422 qeth_qdio_clear_card(card, 0); 1423 qeth_clear_qdio_buffers(card); 1424 qeth_clear_working_pool_list(card); 1425 card->state = CARD_STATE_DOWN; 1426 } 1427 if (card->state == CARD_STATE_DOWN) { 1428 qeth_clear_cmd_buffers(&card->read); 1429 qeth_clear_cmd_buffers(&card->write); 1430 } 1431 } 1432 1433 /* 1434 * test for and Switch promiscuous mode (on or off) 1435 * either for guestlan or HiperSocket Sniffer 1436 */ 1437 static void 1438 qeth_l3_handle_promisc_mode(struct qeth_card *card) 1439 { 1440 struct net_device *dev = card->dev; 1441 1442 if (((dev->flags & IFF_PROMISC) && 1443 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 1444 (!(dev->flags & IFF_PROMISC) && 1445 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 1446 return; 1447 1448 if (card->info.guestlan) { /* Guestlan trace */ 1449 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1450 qeth_setadp_promisc_mode(card); 1451 } else if (card->options.sniffer && /* HiperSockets trace */ 1452 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 1453 if (dev->flags & IFF_PROMISC) { 1454 QETH_CARD_TEXT(card, 3, "+promisc"); 1455 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE); 1456 } else { 1457 QETH_CARD_TEXT(card, 3, "-promisc"); 1458 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1459 } 1460 } 1461 } 1462 1463 static void qeth_l3_set_rx_mode(struct net_device *dev) 1464 { 1465 struct qeth_card *card = dev->ml_priv; 1466 struct qeth_ipaddr *addr; 1467 struct hlist_node *tmp; 1468 int i, rc; 1469 1470 QETH_CARD_TEXT(card, 3, "setmulti"); 1471 1472 if (!card->options.sniffer) { 1473 spin_lock_bh(&card->mclock); 1474 1475 qeth_l3_add_multicast_ipv4(card); 1476 qeth_l3_add_multicast_ipv6(card); 1477 1478 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 1479 switch (addr->disp_flag) { 1480 case QETH_DISP_ADDR_DELETE: 1481 rc = qeth_l3_deregister_addr_entry(card, addr); 1482 if (!rc || rc == IPA_RC_MC_ADDR_NOT_FOUND) { 1483 hash_del(&addr->hnode); 1484 kfree(addr); 1485 } 1486 break; 1487 case QETH_DISP_ADDR_ADD: 1488 rc = qeth_l3_register_addr_entry(card, addr); 1489 if (rc && rc != IPA_RC_LAN_OFFLINE) { 1490 hash_del(&addr->hnode); 1491 kfree(addr); 1492 break; 1493 } 1494 addr->ref_counter = 1; 1495 /* fall through */ 1496 default: 1497 /* for next call to set_rx_mode(): */ 1498 addr->disp_flag = QETH_DISP_ADDR_DELETE; 1499 } 1500 } 1501 1502 spin_unlock_bh(&card->mclock); 1503 1504 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1505 return; 1506 } 1507 qeth_l3_handle_promisc_mode(card); 1508 } 1509 1510 static int qeth_l3_arp_makerc(int rc) 1511 { 1512 switch (rc) { 1513 case IPA_RC_SUCCESS: 1514 return 0; 1515 case QETH_IPA_ARP_RC_NOTSUPP: 1516 case QETH_IPA_ARP_RC_Q_NOTSUPP: 1517 return -EOPNOTSUPP; 1518 case QETH_IPA_ARP_RC_OUT_OF_RANGE: 1519 return -EINVAL; 1520 case QETH_IPA_ARP_RC_Q_NO_DATA: 1521 return -ENOENT; 1522 default: 1523 return -EIO; 1524 } 1525 } 1526 1527 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) 1528 { 1529 int rc; 1530 1531 QETH_CARD_TEXT(card, 3, "arpstnoe"); 1532 1533 /* 1534 * currently GuestLAN only supports the ARP assist function 1535 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; 1536 * thus we say EOPNOTSUPP for this ARP function 1537 */ 1538 if (card->info.guestlan) 1539 return -EOPNOTSUPP; 1540 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1541 return -EOPNOTSUPP; 1542 } 1543 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 1544 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 1545 no_entries); 1546 if (rc) 1547 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n", 1548 CARD_DEVID(card), rc); 1549 return qeth_l3_arp_makerc(rc); 1550 } 1551 1552 static __u32 get_arp_entry_size(struct qeth_card *card, 1553 struct qeth_arp_query_data *qdata, 1554 struct qeth_arp_entrytype *type, __u8 strip_entries) 1555 { 1556 __u32 rc; 1557 __u8 is_hsi; 1558 1559 is_hsi = qdata->reply_bits == 5; 1560 if (type->ip == QETHARP_IP_ADDR_V4) { 1561 QETH_CARD_TEXT(card, 4, "arpev4"); 1562 if (strip_entries) { 1563 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : 1564 sizeof(struct qeth_arp_qi_entry7_short); 1565 } else { 1566 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : 1567 sizeof(struct qeth_arp_qi_entry7); 1568 } 1569 } else if (type->ip == QETHARP_IP_ADDR_V6) { 1570 QETH_CARD_TEXT(card, 4, "arpev6"); 1571 if (strip_entries) { 1572 rc = is_hsi ? 1573 sizeof(struct qeth_arp_qi_entry5_short_ipv6) : 1574 sizeof(struct qeth_arp_qi_entry7_short_ipv6); 1575 } else { 1576 rc = is_hsi ? 1577 sizeof(struct qeth_arp_qi_entry5_ipv6) : 1578 sizeof(struct qeth_arp_qi_entry7_ipv6); 1579 } 1580 } else { 1581 QETH_CARD_TEXT(card, 4, "arpinv"); 1582 rc = 0; 1583 } 1584 1585 return rc; 1586 } 1587 1588 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) 1589 { 1590 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || 1591 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); 1592 } 1593 1594 static int qeth_l3_arp_query_cb(struct qeth_card *card, 1595 struct qeth_reply *reply, unsigned long data) 1596 { 1597 struct qeth_ipa_cmd *cmd; 1598 struct qeth_arp_query_data *qdata; 1599 struct qeth_arp_query_info *qinfo; 1600 int i; 1601 int e; 1602 int entrybytes_done; 1603 int stripped_bytes; 1604 __u8 do_strip_entries; 1605 1606 QETH_CARD_TEXT(card, 3, "arpquecb"); 1607 1608 qinfo = (struct qeth_arp_query_info *) reply->param; 1609 cmd = (struct qeth_ipa_cmd *) data; 1610 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version); 1611 if (cmd->hdr.return_code) { 1612 QETH_CARD_TEXT(card, 4, "arpcberr"); 1613 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1614 return 0; 1615 } 1616 if (cmd->data.setassparms.hdr.return_code) { 1617 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 1618 QETH_CARD_TEXT(card, 4, "setaperr"); 1619 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1620 return 0; 1621 } 1622 qdata = &cmd->data.setassparms.data.query_arp; 1623 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries); 1624 1625 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; 1626 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; 1627 entrybytes_done = 0; 1628 for (e = 0; e < qdata->no_entries; ++e) { 1629 char *cur_entry; 1630 __u32 esize; 1631 struct qeth_arp_entrytype *etype; 1632 1633 cur_entry = &qdata->data + entrybytes_done; 1634 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; 1635 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) { 1636 QETH_CARD_TEXT(card, 4, "pmis"); 1637 QETH_CARD_TEXT_(card, 4, "%i", etype->ip); 1638 break; 1639 } 1640 esize = get_arp_entry_size(card, qdata, etype, 1641 do_strip_entries); 1642 QETH_CARD_TEXT_(card, 5, "esz%i", esize); 1643 if (!esize) 1644 break; 1645 1646 if ((qinfo->udata_len - qinfo->udata_offset) < esize) { 1647 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM); 1648 cmd->hdr.return_code = IPA_RC_ENOMEM; 1649 goto out_error; 1650 } 1651 1652 memcpy(qinfo->udata + qinfo->udata_offset, 1653 &qdata->data + entrybytes_done + stripped_bytes, 1654 esize); 1655 entrybytes_done += esize + stripped_bytes; 1656 qinfo->udata_offset += esize; 1657 ++qinfo->no_entries; 1658 } 1659 /* check if all replies received ... */ 1660 if (cmd->data.setassparms.hdr.seq_no < 1661 cmd->data.setassparms.hdr.number_of_replies) 1662 return 1; 1663 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries); 1664 memcpy(qinfo->udata, &qinfo->no_entries, 4); 1665 /* keep STRIP_ENTRIES flag so the user program can distinguish 1666 * stripped entries from normal ones */ 1667 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) 1668 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; 1669 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); 1670 QETH_CARD_TEXT_(card, 4, "rc%i", 0); 1671 return 0; 1672 out_error: 1673 i = 0; 1674 memcpy(qinfo->udata, &i, 4); 1675 return 0; 1676 } 1677 1678 static int qeth_l3_query_arp_cache_info(struct qeth_card *card, 1679 enum qeth_prot_versions prot, 1680 struct qeth_arp_query_info *qinfo) 1681 { 1682 struct qeth_cmd_buffer *iob; 1683 struct qeth_ipa_cmd *cmd; 1684 int rc; 1685 1686 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); 1687 1688 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1689 IPA_CMD_ASS_ARP_QUERY_INFO, 1690 sizeof(struct qeth_arp_query_data) 1691 - sizeof(char), 1692 prot); 1693 if (!iob) 1694 return -ENOMEM; 1695 cmd = __ipa_cmd(iob); 1696 cmd->data.setassparms.data.query_arp.request_bits = 0x000F; 1697 rc = qeth_send_control_data(card, 1698 QETH_SETASS_BASE_LEN + QETH_ARP_CMD_LEN, 1699 iob, qeth_l3_arp_query_cb, qinfo); 1700 if (rc) 1701 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n", 1702 CARD_DEVID(card), rc); 1703 return qeth_l3_arp_makerc(rc); 1704 } 1705 1706 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) 1707 { 1708 struct qeth_arp_query_info qinfo = {0, }; 1709 int rc; 1710 1711 QETH_CARD_TEXT(card, 3, "arpquery"); 1712 1713 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ 1714 IPA_ARP_PROCESSING)) { 1715 QETH_CARD_TEXT(card, 3, "arpqnsup"); 1716 rc = -EOPNOTSUPP; 1717 goto out; 1718 } 1719 /* get size of userspace buffer and mask_bits -> 6 bytes */ 1720 if (copy_from_user(&qinfo, udata, 6)) { 1721 rc = -EFAULT; 1722 goto out; 1723 } 1724 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 1725 if (!qinfo.udata) { 1726 rc = -ENOMEM; 1727 goto out; 1728 } 1729 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; 1730 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo); 1731 if (rc) { 1732 if (copy_to_user(udata, qinfo.udata, 4)) 1733 rc = -EFAULT; 1734 goto free_and_out; 1735 } 1736 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { 1737 /* fails in case of GuestLAN QDIO mode */ 1738 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo); 1739 } 1740 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) { 1741 QETH_CARD_TEXT(card, 4, "qactf"); 1742 rc = -EFAULT; 1743 goto free_and_out; 1744 } 1745 QETH_CARD_TEXT(card, 4, "qacts"); 1746 1747 free_and_out: 1748 kfree(qinfo.udata); 1749 out: 1750 return rc; 1751 } 1752 1753 static int qeth_l3_arp_modify_entry(struct qeth_card *card, 1754 struct qeth_arp_cache_entry *entry, 1755 enum qeth_arp_process_subcmds arp_cmd) 1756 { 1757 struct qeth_arp_cache_entry *cmd_entry; 1758 struct qeth_cmd_buffer *iob; 1759 int rc; 1760 1761 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY) 1762 QETH_CARD_TEXT(card, 3, "arpadd"); 1763 else 1764 QETH_CARD_TEXT(card, 3, "arpdel"); 1765 1766 /* 1767 * currently GuestLAN only supports the ARP assist function 1768 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; 1769 * thus we say EOPNOTSUPP for this ARP function 1770 */ 1771 if (card->info.guestlan) 1772 return -EOPNOTSUPP; 1773 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1774 return -EOPNOTSUPP; 1775 } 1776 1777 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd, 1778 sizeof(*cmd_entry), QETH_PROT_IPV4); 1779 if (!iob) 1780 return -ENOMEM; 1781 1782 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry; 1783 ether_addr_copy(cmd_entry->macaddr, entry->macaddr); 1784 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4); 1785 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL); 1786 if (rc) 1787 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n", 1788 arp_cmd, CARD_DEVID(card), rc); 1789 1790 return qeth_l3_arp_makerc(rc); 1791 } 1792 1793 static int qeth_l3_arp_flush_cache(struct qeth_card *card) 1794 { 1795 int rc; 1796 1797 QETH_CARD_TEXT(card, 3, "arpflush"); 1798 1799 /* 1800 * currently GuestLAN only supports the ARP assist function 1801 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; 1802 * thus we say EOPNOTSUPP for this ARP function 1803 */ 1804 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD)) 1805 return -EOPNOTSUPP; 1806 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1807 return -EOPNOTSUPP; 1808 } 1809 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 1810 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0); 1811 if (rc) 1812 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n", 1813 CARD_DEVID(card), rc); 1814 return qeth_l3_arp_makerc(rc); 1815 } 1816 1817 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 1818 { 1819 struct qeth_card *card = dev->ml_priv; 1820 struct qeth_arp_cache_entry arp_entry; 1821 enum qeth_arp_process_subcmds arp_cmd; 1822 int rc = 0; 1823 1824 switch (cmd) { 1825 case SIOC_QETH_ARP_SET_NO_ENTRIES: 1826 if (!capable(CAP_NET_ADMIN)) { 1827 rc = -EPERM; 1828 break; 1829 } 1830 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); 1831 break; 1832 case SIOC_QETH_ARP_QUERY_INFO: 1833 if (!capable(CAP_NET_ADMIN)) { 1834 rc = -EPERM; 1835 break; 1836 } 1837 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data); 1838 break; 1839 case SIOC_QETH_ARP_ADD_ENTRY: 1840 case SIOC_QETH_ARP_REMOVE_ENTRY: 1841 if (!capable(CAP_NET_ADMIN)) 1842 return -EPERM; 1843 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry))) 1844 return -EFAULT; 1845 1846 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ? 1847 IPA_CMD_ASS_ARP_ADD_ENTRY : 1848 IPA_CMD_ASS_ARP_REMOVE_ENTRY; 1849 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd); 1850 case SIOC_QETH_ARP_FLUSH_CACHE: 1851 if (!capable(CAP_NET_ADMIN)) { 1852 rc = -EPERM; 1853 break; 1854 } 1855 rc = qeth_l3_arp_flush_cache(card); 1856 break; 1857 default: 1858 rc = -EOPNOTSUPP; 1859 } 1860 return rc; 1861 } 1862 1863 static int qeth_l3_get_cast_type(struct sk_buff *skb) 1864 { 1865 struct neighbour *n = NULL; 1866 struct dst_entry *dst; 1867 1868 rcu_read_lock(); 1869 dst = skb_dst(skb); 1870 if (dst) 1871 n = dst_neigh_lookup_skb(dst, skb); 1872 if (n) { 1873 int cast_type = n->type; 1874 1875 rcu_read_unlock(); 1876 neigh_release(n); 1877 if ((cast_type == RTN_BROADCAST) || 1878 (cast_type == RTN_MULTICAST) || 1879 (cast_type == RTN_ANYCAST)) 1880 return cast_type; 1881 return RTN_UNICAST; 1882 } 1883 rcu_read_unlock(); 1884 1885 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */ 1886 switch (qeth_get_ip_version(skb)) { 1887 case 4: 1888 return ipv4_is_multicast(ip_hdr(skb)->daddr) ? 1889 RTN_MULTICAST : RTN_UNICAST; 1890 case 6: 1891 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ? 1892 RTN_MULTICAST : RTN_UNICAST; 1893 default: 1894 /* ... and MAC address */ 1895 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, 1896 skb->dev->broadcast)) 1897 return RTN_BROADCAST; 1898 if (is_multicast_ether_addr(eth_hdr(skb)->h_dest)) 1899 return RTN_MULTICAST; 1900 /* default to unicast */ 1901 return RTN_UNICAST; 1902 } 1903 } 1904 1905 static u8 qeth_l3_cast_type_to_flag(int cast_type) 1906 { 1907 if (cast_type == RTN_MULTICAST) 1908 return QETH_CAST_MULTICAST; 1909 if (cast_type == RTN_ANYCAST) 1910 return QETH_CAST_ANYCAST; 1911 if (cast_type == RTN_BROADCAST) 1912 return QETH_CAST_BROADCAST; 1913 return QETH_CAST_UNICAST; 1914 } 1915 1916 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 1917 struct sk_buff *skb, int ipv, int cast_type, 1918 unsigned int data_len) 1919 { 1920 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3; 1921 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 1922 1923 hdr->hdr.l3.length = data_len; 1924 1925 if (skb_is_gso(skb)) { 1926 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO; 1927 } else { 1928 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 1929 1930 if (skb->protocol == htons(ETH_P_AF_IUCV)) { 1931 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST; 1932 l3_hdr->next_hop.ipv6_addr.s6_addr16[0] = htons(0xfe80); 1933 memcpy(&l3_hdr->next_hop.ipv6_addr.s6_addr32[2], 1934 iucv_trans_hdr(skb)->destUserID, 8); 1935 return; 1936 } 1937 1938 if (skb->ip_summed == CHECKSUM_PARTIAL) { 1939 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv); 1940 /* some HW requires combined L3+L4 csum offload: */ 1941 if (ipv == 4) 1942 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ; 1943 if (card->options.performance_stats) 1944 card->perf_stats.tx_csum++; 1945 } 1946 } 1947 1948 if (ipv == 4 || IS_IQD(card)) { 1949 /* NETIF_F_HW_VLAN_CTAG_TX */ 1950 if (skb_vlan_tag_present(skb)) { 1951 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME; 1952 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); 1953 } 1954 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) { 1955 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG; 1956 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); 1957 } 1958 1959 /* OSA only: */ 1960 if (!ipv) { 1961 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU; 1962 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, 1963 skb->dev->broadcast)) 1964 hdr->hdr.l3.flags |= QETH_CAST_BROADCAST; 1965 else 1966 hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ? 1967 QETH_CAST_MULTICAST : QETH_CAST_UNICAST; 1968 return; 1969 } 1970 1971 hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type); 1972 rcu_read_lock(); 1973 if (ipv == 4) { 1974 struct rtable *rt = skb_rtable(skb); 1975 1976 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ? 1977 rt_nexthop(rt, ip_hdr(skb)->daddr) : 1978 ip_hdr(skb)->daddr; 1979 } else { 1980 /* IPv6 */ 1981 const struct rt6_info *rt = skb_rt6_info(skb); 1982 1983 if (rt && !ipv6_addr_any(&rt->rt6i_gateway)) 1984 l3_hdr->next_hop.ipv6_addr = rt->rt6i_gateway; 1985 else 1986 l3_hdr->next_hop.ipv6_addr = ipv6_hdr(skb)->daddr; 1987 1988 hdr->hdr.l3.flags |= QETH_HDR_IPV6; 1989 if (card->info.type != QETH_CARD_TYPE_IQD) 1990 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU; 1991 } 1992 rcu_read_unlock(); 1993 } 1994 1995 static void qeth_l3_fixup_headers(struct sk_buff *skb) 1996 { 1997 struct iphdr *iph = ip_hdr(skb); 1998 1999 /* this is safe, IPv6 traffic takes a different path */ 2000 if (skb->ip_summed == CHECKSUM_PARTIAL) 2001 iph->check = 0; 2002 if (skb_is_gso(skb)) { 2003 iph->tot_len = 0; 2004 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr, 2005 iph->daddr, 0); 2006 } 2007 } 2008 2009 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb, 2010 struct qeth_qdio_out_q *queue, int ipv, int cast_type) 2011 { 2012 unsigned char eth_hdr[ETH_HLEN]; 2013 unsigned int hw_hdr_len; 2014 int rc; 2015 2016 /* re-use the L2 header area for the HW header: */ 2017 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) : 2018 sizeof(struct qeth_hdr); 2019 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN); 2020 if (rc) 2021 return rc; 2022 skb_copy_from_linear_data(skb, eth_hdr, ETH_HLEN); 2023 skb_pull(skb, ETH_HLEN); 2024 2025 qeth_l3_fixup_headers(skb); 2026 rc = qeth_xmit(card, skb, queue, ipv, cast_type, qeth_l3_fill_header); 2027 if (rc == -EBUSY) { 2028 /* roll back to ETH header */ 2029 skb_push(skb, ETH_HLEN); 2030 skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN); 2031 } 2032 return rc; 2033 } 2034 2035 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, 2036 struct net_device *dev) 2037 { 2038 int cast_type = qeth_l3_get_cast_type(skb); 2039 struct qeth_card *card = dev->ml_priv; 2040 int ipv = qeth_get_ip_version(skb); 2041 struct qeth_qdio_out_q *queue; 2042 int tx_bytes = skb->len; 2043 int rc; 2044 2045 if (IS_IQD(card)) { 2046 if (card->options.sniffer) 2047 goto tx_drop; 2048 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) || 2049 (card->options.cq == QETH_CQ_ENABLED && 2050 skb->protocol != htons(ETH_P_AF_IUCV))) 2051 goto tx_drop; 2052 } 2053 2054 if (card->state != CARD_STATE_UP) { 2055 card->stats.tx_carrier_errors++; 2056 goto tx_drop; 2057 } 2058 2059 if (cast_type == RTN_BROADCAST && !card->info.broadcast_capable) 2060 goto tx_drop; 2061 2062 queue = qeth_get_tx_queue(card, skb, ipv, cast_type); 2063 2064 if (card->options.performance_stats) { 2065 card->perf_stats.outbound_cnt++; 2066 card->perf_stats.outbound_start_time = qeth_get_micros(); 2067 } 2068 netif_stop_queue(dev); 2069 2070 if (ipv == 4 || IS_IQD(card)) 2071 rc = qeth_l3_xmit(card, skb, queue, ipv, cast_type); 2072 else 2073 rc = qeth_xmit(card, skb, queue, ipv, cast_type, 2074 qeth_l3_fill_header); 2075 2076 if (!rc) { 2077 card->stats.tx_packets++; 2078 card->stats.tx_bytes += tx_bytes; 2079 if (card->options.performance_stats) 2080 card->perf_stats.outbound_time += qeth_get_micros() - 2081 card->perf_stats.outbound_start_time; 2082 netif_wake_queue(dev); 2083 return NETDEV_TX_OK; 2084 } else if (rc == -EBUSY) { 2085 return NETDEV_TX_BUSY; 2086 } /* else fall through */ 2087 2088 tx_drop: 2089 card->stats.tx_dropped++; 2090 card->stats.tx_errors++; 2091 dev_kfree_skb_any(skb); 2092 netif_wake_queue(dev); 2093 return NETDEV_TX_OK; 2094 } 2095 2096 static const struct ethtool_ops qeth_l3_ethtool_ops = { 2097 .get_link = ethtool_op_get_link, 2098 .get_strings = qeth_core_get_strings, 2099 .get_ethtool_stats = qeth_core_get_ethtool_stats, 2100 .get_sset_count = qeth_core_get_sset_count, 2101 .get_drvinfo = qeth_core_get_drvinfo, 2102 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 2103 }; 2104 2105 /* 2106 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting 2107 * NOARP on the netdevice is no option because it also turns off neighbor 2108 * solicitation. For IPv4 we install a neighbor_setup function. We don't want 2109 * arp resolution but we want the hard header (packet socket will work 2110 * e.g. tcpdump) 2111 */ 2112 static int qeth_l3_neigh_setup_noarp(struct neighbour *n) 2113 { 2114 n->nud_state = NUD_NOARP; 2115 memcpy(n->ha, "FAKELL", 6); 2116 n->output = n->ops->connected_output; 2117 return 0; 2118 } 2119 2120 static int 2121 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) 2122 { 2123 if (np->tbl->family == AF_INET) 2124 np->neigh_setup = qeth_l3_neigh_setup_noarp; 2125 2126 return 0; 2127 } 2128 2129 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb, 2130 struct net_device *dev, 2131 netdev_features_t features) 2132 { 2133 if (qeth_get_ip_version(skb) != 4) 2134 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 2135 return qeth_features_check(skb, dev, features); 2136 } 2137 2138 static const struct net_device_ops qeth_l3_netdev_ops = { 2139 .ndo_open = qeth_open, 2140 .ndo_stop = qeth_stop, 2141 .ndo_get_stats = qeth_get_stats, 2142 .ndo_start_xmit = qeth_l3_hard_start_xmit, 2143 .ndo_validate_addr = eth_validate_addr, 2144 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 2145 .ndo_do_ioctl = qeth_do_ioctl, 2146 .ndo_fix_features = qeth_fix_features, 2147 .ndo_set_features = qeth_set_features, 2148 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 2149 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 2150 .ndo_tx_timeout = qeth_tx_timeout, 2151 }; 2152 2153 static const struct net_device_ops qeth_l3_osa_netdev_ops = { 2154 .ndo_open = qeth_open, 2155 .ndo_stop = qeth_stop, 2156 .ndo_get_stats = qeth_get_stats, 2157 .ndo_start_xmit = qeth_l3_hard_start_xmit, 2158 .ndo_features_check = qeth_l3_osa_features_check, 2159 .ndo_validate_addr = eth_validate_addr, 2160 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 2161 .ndo_do_ioctl = qeth_do_ioctl, 2162 .ndo_fix_features = qeth_fix_features, 2163 .ndo_set_features = qeth_set_features, 2164 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 2165 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 2166 .ndo_tx_timeout = qeth_tx_timeout, 2167 .ndo_neigh_setup = qeth_l3_neigh_setup, 2168 }; 2169 2170 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok) 2171 { 2172 unsigned int headroom; 2173 int rc; 2174 2175 if (card->info.type == QETH_CARD_TYPE_OSD || 2176 card->info.type == QETH_CARD_TYPE_OSX) { 2177 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) || 2178 (card->info.link_type == QETH_LINK_TYPE_HSTR)) { 2179 pr_info("qeth_l3: ignoring TR device\n"); 2180 return -ENODEV; 2181 } 2182 2183 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; 2184 2185 /*IPv6 address autoconfiguration stuff*/ 2186 qeth_l3_get_unique_id(card); 2187 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD)) 2188 card->dev->dev_id = card->info.unique_id & 0xffff; 2189 2190 if (!card->info.guestlan) { 2191 card->dev->features |= NETIF_F_SG; 2192 card->dev->hw_features |= NETIF_F_TSO | 2193 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 2194 card->dev->vlan_features |= NETIF_F_TSO | 2195 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 2196 } 2197 2198 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 2199 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 2200 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 2201 } 2202 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 2203 card->dev->hw_features |= NETIF_F_TSO6; 2204 card->dev->vlan_features |= NETIF_F_TSO6; 2205 } 2206 2207 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */ 2208 if (card->dev->hw_features & NETIF_F_TSO6) 2209 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN; 2210 else if (card->dev->hw_features & NETIF_F_TSO) 2211 headroom = sizeof(struct qeth_hdr_tso); 2212 else 2213 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN; 2214 } else if (card->info.type == QETH_CARD_TYPE_IQD) { 2215 card->dev->flags |= IFF_NOARP; 2216 card->dev->netdev_ops = &qeth_l3_netdev_ops; 2217 headroom = sizeof(struct qeth_hdr) - ETH_HLEN; 2218 2219 rc = qeth_l3_iqd_read_initial_mac(card); 2220 if (rc) 2221 goto out; 2222 } else 2223 return -ENODEV; 2224 2225 card->dev->needed_headroom = headroom; 2226 card->dev->ethtool_ops = &qeth_l3_ethtool_ops; 2227 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 2228 NETIF_F_HW_VLAN_CTAG_RX | 2229 NETIF_F_HW_VLAN_CTAG_FILTER; 2230 2231 netif_keep_dst(card->dev); 2232 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) 2233 netif_set_gso_max_size(card->dev, 2234 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1)); 2235 2236 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 2237 rc = register_netdev(card->dev); 2238 if (!rc && carrier_ok) 2239 netif_carrier_on(card->dev); 2240 2241 out: 2242 if (rc) 2243 card->dev->netdev_ops = NULL; 2244 return rc; 2245 } 2246 2247 static const struct device_type qeth_l3_devtype = { 2248 .name = "qeth_layer3", 2249 .groups = qeth_l3_attr_groups, 2250 }; 2251 2252 static int qeth_l3_probe_device(struct ccwgroup_device *gdev) 2253 { 2254 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2255 int rc; 2256 2257 if (gdev->dev.type == &qeth_generic_devtype) { 2258 rc = qeth_l3_create_device_attributes(&gdev->dev); 2259 if (rc) 2260 return rc; 2261 } 2262 hash_init(card->ip_htable); 2263 hash_init(card->ip_mc_htable); 2264 card->info.hwtrap = 0; 2265 return 0; 2266 } 2267 2268 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) 2269 { 2270 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 2271 2272 if (cgdev->dev.type == &qeth_generic_devtype) 2273 qeth_l3_remove_device_attributes(&cgdev->dev); 2274 2275 qeth_set_allowed_threads(card, 0, 1); 2276 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 2277 2278 if (cgdev->state == CCWGROUP_ONLINE) 2279 qeth_l3_set_offline(cgdev); 2280 2281 if (qeth_netdev_is_registered(card->dev)) 2282 unregister_netdev(card->dev); 2283 qeth_l3_clear_ip_htable(card, 0); 2284 qeth_l3_clear_ipato_list(card); 2285 } 2286 2287 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) 2288 { 2289 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2290 struct net_device *dev = card->dev; 2291 int rc = 0; 2292 enum qeth_card_states recover_flag; 2293 bool carrier_ok; 2294 2295 mutex_lock(&card->discipline_mutex); 2296 mutex_lock(&card->conf_mutex); 2297 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 2298 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 2299 2300 recover_flag = card->state; 2301 rc = qeth_core_hardsetup_card(card, &carrier_ok); 2302 if (rc) { 2303 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 2304 rc = -ENODEV; 2305 goto out_remove; 2306 } 2307 2308 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 2309 if (card->info.hwtrap && 2310 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 2311 card->info.hwtrap = 0; 2312 } else 2313 card->info.hwtrap = 0; 2314 2315 card->state = CARD_STATE_HARDSETUP; 2316 qeth_print_status_message(card); 2317 2318 /* softsetup */ 2319 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 2320 2321 rc = qeth_l3_setadapter_parms(card); 2322 if (rc) 2323 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 2324 if (!card->options.sniffer) { 2325 rc = qeth_l3_start_ipassists(card); 2326 if (rc) { 2327 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2328 goto out_remove; 2329 } 2330 rc = qeth_l3_setrouting_v4(card); 2331 if (rc) 2332 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc); 2333 rc = qeth_l3_setrouting_v6(card); 2334 if (rc) 2335 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc); 2336 } 2337 2338 rc = qeth_init_qdio_queues(card); 2339 if (rc) { 2340 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2341 rc = -ENODEV; 2342 goto out_remove; 2343 } 2344 card->state = CARD_STATE_SOFTSETUP; 2345 2346 qeth_set_allowed_threads(card, 0xffffffff, 0); 2347 qeth_l3_recover_ip(card); 2348 2349 if (!qeth_netdev_is_registered(dev)) { 2350 rc = qeth_l3_setup_netdev(card, carrier_ok); 2351 if (rc) 2352 goto out_remove; 2353 } else { 2354 rtnl_lock(); 2355 if (carrier_ok) 2356 netif_carrier_on(dev); 2357 else 2358 netif_carrier_off(dev); 2359 2360 netif_device_attach(dev); 2361 qeth_enable_hw_features(dev); 2362 2363 if (recover_flag == CARD_STATE_RECOVER) { 2364 if (recovery_mode) { 2365 qeth_open(dev); 2366 qeth_l3_set_rx_mode(dev); 2367 } else { 2368 dev_open(dev, NULL); 2369 } 2370 } 2371 rtnl_unlock(); 2372 } 2373 qeth_trace_features(card); 2374 /* let user_space know that device is online */ 2375 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 2376 mutex_unlock(&card->conf_mutex); 2377 mutex_unlock(&card->discipline_mutex); 2378 return 0; 2379 out_remove: 2380 qeth_l3_stop_card(card, 0); 2381 ccw_device_set_offline(CARD_DDEV(card)); 2382 ccw_device_set_offline(CARD_WDEV(card)); 2383 ccw_device_set_offline(CARD_RDEV(card)); 2384 qdio_free(CARD_DDEV(card)); 2385 if (recover_flag == CARD_STATE_RECOVER) 2386 card->state = CARD_STATE_RECOVER; 2387 else 2388 card->state = CARD_STATE_DOWN; 2389 mutex_unlock(&card->conf_mutex); 2390 mutex_unlock(&card->discipline_mutex); 2391 return rc; 2392 } 2393 2394 static int qeth_l3_set_online(struct ccwgroup_device *gdev) 2395 { 2396 return __qeth_l3_set_online(gdev, 0); 2397 } 2398 2399 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev, 2400 int recovery_mode) 2401 { 2402 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 2403 int rc = 0, rc2 = 0, rc3 = 0; 2404 enum qeth_card_states recover_flag; 2405 2406 mutex_lock(&card->discipline_mutex); 2407 mutex_lock(&card->conf_mutex); 2408 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 2409 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 2410 2411 rtnl_lock(); 2412 netif_device_detach(card->dev); 2413 netif_carrier_off(card->dev); 2414 rtnl_unlock(); 2415 2416 recover_flag = card->state; 2417 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 2418 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 2419 card->info.hwtrap = 1; 2420 } 2421 qeth_l3_stop_card(card, recovery_mode); 2422 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) { 2423 rtnl_lock(); 2424 call_netdevice_notifiers(NETDEV_REBOOT, card->dev); 2425 rtnl_unlock(); 2426 } 2427 rc = ccw_device_set_offline(CARD_DDEV(card)); 2428 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 2429 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 2430 if (!rc) 2431 rc = (rc2) ? rc2 : rc3; 2432 if (rc) 2433 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2434 qdio_free(CARD_DDEV(card)); 2435 if (recover_flag == CARD_STATE_UP) 2436 card->state = CARD_STATE_RECOVER; 2437 /* let user_space know that device is offline */ 2438 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 2439 mutex_unlock(&card->conf_mutex); 2440 mutex_unlock(&card->discipline_mutex); 2441 return 0; 2442 } 2443 2444 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev) 2445 { 2446 return __qeth_l3_set_offline(cgdev, 0); 2447 } 2448 2449 static int qeth_l3_recover(void *ptr) 2450 { 2451 struct qeth_card *card; 2452 int rc = 0; 2453 2454 card = (struct qeth_card *) ptr; 2455 QETH_CARD_TEXT(card, 2, "recover1"); 2456 QETH_CARD_HEX(card, 2, &card, sizeof(void *)); 2457 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 2458 return 0; 2459 QETH_CARD_TEXT(card, 2, "recover2"); 2460 dev_warn(&card->gdev->dev, 2461 "A recovery process has been started for the device\n"); 2462 __qeth_l3_set_offline(card->gdev, 1); 2463 rc = __qeth_l3_set_online(card->gdev, 1); 2464 if (!rc) 2465 dev_info(&card->gdev->dev, 2466 "Device successfully recovered!\n"); 2467 else { 2468 qeth_close_dev(card); 2469 dev_warn(&card->gdev->dev, "The qeth device driver " 2470 "failed to recover an error on the device\n"); 2471 } 2472 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 2473 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 2474 return 0; 2475 } 2476 2477 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev) 2478 { 2479 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2480 2481 qeth_set_allowed_threads(card, 0, 1); 2482 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 2483 if (gdev->state == CCWGROUP_OFFLINE) 2484 return 0; 2485 if (card->state == CARD_STATE_UP) { 2486 if (card->info.hwtrap) 2487 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 2488 __qeth_l3_set_offline(card->gdev, 1); 2489 } else 2490 __qeth_l3_set_offline(card->gdev, 0); 2491 return 0; 2492 } 2493 2494 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev) 2495 { 2496 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2497 int rc = 0; 2498 2499 if (card->state == CARD_STATE_RECOVER) { 2500 rc = __qeth_l3_set_online(card->gdev, 1); 2501 if (rc) { 2502 rtnl_lock(); 2503 dev_close(card->dev); 2504 rtnl_unlock(); 2505 } 2506 } else 2507 rc = __qeth_l3_set_online(card->gdev, 0); 2508 2509 qeth_set_allowed_threads(card, 0xffffffff, 0); 2510 if (rc) 2511 dev_warn(&card->gdev->dev, "The qeth device driver " 2512 "failed to recover an error on the device\n"); 2513 return rc; 2514 } 2515 2516 /* Returns zero if the command is successfully "consumed" */ 2517 static int qeth_l3_control_event(struct qeth_card *card, 2518 struct qeth_ipa_cmd *cmd) 2519 { 2520 return 1; 2521 } 2522 2523 struct qeth_discipline qeth_l3_discipline = { 2524 .devtype = &qeth_l3_devtype, 2525 .process_rx_buffer = qeth_l3_process_inbound_buffer, 2526 .recover = qeth_l3_recover, 2527 .setup = qeth_l3_probe_device, 2528 .remove = qeth_l3_remove_device, 2529 .set_online = qeth_l3_set_online, 2530 .set_offline = qeth_l3_set_offline, 2531 .freeze = qeth_l3_pm_suspend, 2532 .thaw = qeth_l3_pm_resume, 2533 .restore = qeth_l3_pm_resume, 2534 .do_ioctl = qeth_l3_do_ioctl, 2535 .control_event_handler = qeth_l3_control_event, 2536 }; 2537 EXPORT_SYMBOL_GPL(qeth_l3_discipline); 2538 2539 static int qeth_l3_handle_ip_event(struct qeth_card *card, 2540 struct qeth_ipaddr *addr, 2541 unsigned long event) 2542 { 2543 switch (event) { 2544 case NETDEV_UP: 2545 spin_lock_bh(&card->ip_lock); 2546 qeth_l3_add_ip(card, addr); 2547 spin_unlock_bh(&card->ip_lock); 2548 return NOTIFY_OK; 2549 case NETDEV_DOWN: 2550 spin_lock_bh(&card->ip_lock); 2551 qeth_l3_delete_ip(card, addr); 2552 spin_unlock_bh(&card->ip_lock); 2553 return NOTIFY_OK; 2554 default: 2555 return NOTIFY_DONE; 2556 } 2557 } 2558 2559 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) 2560 { 2561 if (is_vlan_dev(dev)) 2562 dev = vlan_dev_real_dev(dev); 2563 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops || 2564 dev->netdev_ops == &qeth_l3_netdev_ops) 2565 return (struct qeth_card *) dev->ml_priv; 2566 return NULL; 2567 } 2568 2569 static int qeth_l3_ip_event(struct notifier_block *this, 2570 unsigned long event, void *ptr) 2571 { 2572 2573 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 2574 struct net_device *dev = ifa->ifa_dev->dev; 2575 struct qeth_ipaddr addr; 2576 struct qeth_card *card; 2577 2578 if (dev_net(dev) != &init_net) 2579 return NOTIFY_DONE; 2580 2581 card = qeth_l3_get_card_from_dev(dev); 2582 if (!card) 2583 return NOTIFY_DONE; 2584 QETH_CARD_TEXT(card, 3, "ipevent"); 2585 2586 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); 2587 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address); 2588 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask); 2589 2590 return qeth_l3_handle_ip_event(card, &addr, event); 2591 } 2592 2593 static struct notifier_block qeth_l3_ip_notifier = { 2594 qeth_l3_ip_event, 2595 NULL, 2596 }; 2597 2598 static int qeth_l3_ip6_event(struct notifier_block *this, 2599 unsigned long event, void *ptr) 2600 { 2601 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 2602 struct net_device *dev = ifa->idev->dev; 2603 struct qeth_ipaddr addr; 2604 struct qeth_card *card; 2605 2606 card = qeth_l3_get_card_from_dev(dev); 2607 if (!card) 2608 return NOTIFY_DONE; 2609 QETH_CARD_TEXT(card, 3, "ip6event"); 2610 if (!qeth_is_supported(card, IPA_IPV6)) 2611 return NOTIFY_DONE; 2612 2613 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 2614 addr.u.a6.addr = ifa->addr; 2615 addr.u.a6.pfxlen = ifa->prefix_len; 2616 2617 return qeth_l3_handle_ip_event(card, &addr, event); 2618 } 2619 2620 static struct notifier_block qeth_l3_ip6_notifier = { 2621 qeth_l3_ip6_event, 2622 NULL, 2623 }; 2624 2625 static int qeth_l3_register_notifiers(void) 2626 { 2627 int rc; 2628 2629 QETH_DBF_TEXT(SETUP, 5, "regnotif"); 2630 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); 2631 if (rc) 2632 return rc; 2633 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); 2634 if (rc) { 2635 unregister_inetaddr_notifier(&qeth_l3_ip_notifier); 2636 return rc; 2637 } 2638 return 0; 2639 } 2640 2641 static void qeth_l3_unregister_notifiers(void) 2642 { 2643 QETH_DBF_TEXT(SETUP, 5, "unregnot"); 2644 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); 2645 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); 2646 } 2647 2648 static int __init qeth_l3_init(void) 2649 { 2650 pr_info("register layer 3 discipline\n"); 2651 return qeth_l3_register_notifiers(); 2652 } 2653 2654 static void __exit qeth_l3_exit(void) 2655 { 2656 qeth_l3_unregister_notifiers(); 2657 pr_info("unregister layer 3 discipline\n"); 2658 } 2659 2660 module_init(qeth_l3_init); 2661 module_exit(qeth_l3_exit); 2662 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2663 MODULE_DESCRIPTION("qeth layer 3 discipline"); 2664 MODULE_LICENSE("GPL"); 2665