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 int qeth_l3_stop(struct net_device *); 44 static void qeth_l3_set_rx_mode(struct net_device *dev); 45 static int qeth_l3_register_addr_entry(struct qeth_card *, 46 struct qeth_ipaddr *); 47 static int qeth_l3_deregister_addr_entry(struct qeth_card *, 48 struct qeth_ipaddr *); 49 50 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf) 51 { 52 sprintf(buf, "%pI4", addr); 53 } 54 55 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf) 56 { 57 sprintf(buf, "%pI6", addr); 58 } 59 60 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr, 61 char *buf) 62 { 63 if (proto == QETH_PROT_IPV4) 64 qeth_l3_ipaddr4_to_string(addr, buf); 65 else if (proto == QETH_PROT_IPV6) 66 qeth_l3_ipaddr6_to_string(addr, buf); 67 } 68 69 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot) 70 { 71 struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC); 72 73 if (addr) 74 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot); 75 return addr; 76 } 77 78 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card, 79 struct qeth_ipaddr *query) 80 { 81 u64 key = qeth_l3_ipaddr_hash(query); 82 struct qeth_ipaddr *addr; 83 84 if (query->is_multicast) { 85 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key) 86 if (qeth_l3_addr_match_ip(addr, query)) 87 return addr; 88 } else { 89 hash_for_each_possible(card->ip_htable, addr, hnode, key) 90 if (qeth_l3_addr_match_ip(addr, query)) 91 return addr; 92 } 93 return NULL; 94 } 95 96 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len) 97 { 98 int i, j; 99 u8 octet; 100 101 for (i = 0; i < len; ++i) { 102 octet = addr[i]; 103 for (j = 7; j >= 0; --j) { 104 bits[i*8 + j] = octet & 1; 105 octet >>= 1; 106 } 107 } 108 } 109 110 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, 111 struct qeth_ipaddr *addr) 112 { 113 struct qeth_ipato_entry *ipatoe; 114 u8 addr_bits[128] = {0, }; 115 u8 ipatoe_bits[128] = {0, }; 116 int rc = 0; 117 118 if (!card->ipato.enabled) 119 return false; 120 if (addr->type != QETH_IP_TYPE_NORMAL) 121 return false; 122 123 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits, 124 (addr->proto == QETH_PROT_IPV4)? 4:16); 125 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 126 if (addr->proto != ipatoe->proto) 127 continue; 128 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits, 129 (ipatoe->proto == QETH_PROT_IPV4) ? 130 4 : 16); 131 if (addr->proto == QETH_PROT_IPV4) 132 rc = !memcmp(addr_bits, ipatoe_bits, 133 min(32, ipatoe->mask_bits)); 134 else 135 rc = !memcmp(addr_bits, ipatoe_bits, 136 min(128, ipatoe->mask_bits)); 137 if (rc) 138 break; 139 } 140 /* invert? */ 141 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4) 142 rc = !rc; 143 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6) 144 rc = !rc; 145 146 return rc; 147 } 148 149 static int qeth_l3_delete_ip(struct qeth_card *card, 150 struct qeth_ipaddr *tmp_addr) 151 { 152 int rc = 0; 153 struct qeth_ipaddr *addr; 154 155 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 156 QETH_CARD_TEXT(card, 2, "delrxip"); 157 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 158 QETH_CARD_TEXT(card, 2, "delvipa"); 159 else 160 QETH_CARD_TEXT(card, 2, "delip"); 161 162 if (tmp_addr->proto == QETH_PROT_IPV4) 163 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 164 else { 165 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 166 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 167 } 168 169 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 170 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr)) 171 return -ENOENT; 172 173 addr->ref_counter--; 174 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0) 175 return rc; 176 if (addr->in_progress) 177 return -EINPROGRESS; 178 179 if (qeth_card_hw_is_reachable(card)) 180 rc = qeth_l3_deregister_addr_entry(card, addr); 181 182 hash_del(&addr->hnode); 183 kfree(addr); 184 185 return rc; 186 } 187 188 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) 189 { 190 int rc = 0; 191 struct qeth_ipaddr *addr; 192 char buf[40]; 193 194 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 195 QETH_CARD_TEXT(card, 2, "addrxip"); 196 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 197 QETH_CARD_TEXT(card, 2, "addvipa"); 198 else 199 QETH_CARD_TEXT(card, 2, "addip"); 200 201 if (tmp_addr->proto == QETH_PROT_IPV4) 202 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 203 else { 204 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 205 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 206 } 207 208 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 209 if (addr) { 210 if (tmp_addr->type != QETH_IP_TYPE_NORMAL) 211 return -EADDRINUSE; 212 if (qeth_l3_addr_match_all(addr, tmp_addr)) { 213 addr->ref_counter++; 214 return 0; 215 } 216 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u, 217 buf); 218 dev_warn(&card->gdev->dev, 219 "Registering IP address %s failed\n", buf); 220 return -EADDRINUSE; 221 } else { 222 addr = qeth_l3_get_addr_buffer(tmp_addr->proto); 223 if (!addr) 224 return -ENOMEM; 225 226 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr)); 227 addr->ref_counter = 1; 228 229 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) { 230 QETH_CARD_TEXT(card, 2, "tkovaddr"); 231 addr->ipato = 1; 232 } 233 hash_add(card->ip_htable, &addr->hnode, 234 qeth_l3_ipaddr_hash(addr)); 235 236 if (!qeth_card_hw_is_reachable(card)) { 237 addr->disp_flag = QETH_DISP_ADDR_ADD; 238 return 0; 239 } 240 241 /* qeth_l3_register_addr_entry can go to sleep 242 * if we add a IPV4 addr. It is caused by the reason 243 * that SETIP ipa cmd starts ARP staff for IPV4 addr. 244 * Thus we should unlock spinlock, and make a protection 245 * using in_progress variable to indicate that there is 246 * an hardware operation with this IPV4 address 247 */ 248 if (addr->proto == QETH_PROT_IPV4) { 249 addr->in_progress = 1; 250 spin_unlock_bh(&card->ip_lock); 251 rc = qeth_l3_register_addr_entry(card, addr); 252 spin_lock_bh(&card->ip_lock); 253 addr->in_progress = 0; 254 } else 255 rc = qeth_l3_register_addr_entry(card, addr); 256 257 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) || 258 (rc == IPA_RC_LAN_OFFLINE)) { 259 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 260 if (addr->ref_counter < 1) { 261 qeth_l3_deregister_addr_entry(card, addr); 262 hash_del(&addr->hnode); 263 kfree(addr); 264 } 265 } else { 266 hash_del(&addr->hnode); 267 kfree(addr); 268 } 269 } 270 return rc; 271 } 272 273 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) 274 { 275 struct qeth_ipaddr *addr; 276 struct hlist_node *tmp; 277 int i; 278 279 QETH_CARD_TEXT(card, 4, "clearip"); 280 281 if (recover && card->options.sniffer) 282 return; 283 284 spin_lock_bh(&card->ip_lock); 285 286 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 287 if (!recover) { 288 hash_del(&addr->hnode); 289 kfree(addr); 290 continue; 291 } 292 addr->disp_flag = QETH_DISP_ADDR_ADD; 293 } 294 295 spin_unlock_bh(&card->ip_lock); 296 297 spin_lock_bh(&card->mclock); 298 299 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 300 hash_del(&addr->hnode); 301 kfree(addr); 302 } 303 304 spin_unlock_bh(&card->mclock); 305 306 307 } 308 static void qeth_l3_recover_ip(struct qeth_card *card) 309 { 310 struct qeth_ipaddr *addr; 311 struct hlist_node *tmp; 312 int i; 313 int rc; 314 315 QETH_CARD_TEXT(card, 4, "recovrip"); 316 317 spin_lock_bh(&card->ip_lock); 318 319 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 320 if (addr->disp_flag == QETH_DISP_ADDR_ADD) { 321 if (addr->proto == QETH_PROT_IPV4) { 322 addr->in_progress = 1; 323 spin_unlock_bh(&card->ip_lock); 324 rc = qeth_l3_register_addr_entry(card, addr); 325 spin_lock_bh(&card->ip_lock); 326 addr->in_progress = 0; 327 } else 328 rc = qeth_l3_register_addr_entry(card, addr); 329 330 if (!rc) { 331 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 332 if (addr->ref_counter < 1) 333 qeth_l3_delete_ip(card, addr); 334 } else { 335 hash_del(&addr->hnode); 336 kfree(addr); 337 } 338 } 339 } 340 341 spin_unlock_bh(&card->ip_lock); 342 343 } 344 345 static int qeth_l3_send_setdelmc(struct qeth_card *card, 346 struct qeth_ipaddr *addr, int ipacmd) 347 { 348 int rc; 349 struct qeth_cmd_buffer *iob; 350 struct qeth_ipa_cmd *cmd; 351 352 QETH_CARD_TEXT(card, 4, "setdelmc"); 353 354 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 355 if (!iob) 356 return -ENOMEM; 357 cmd = __ipa_cmd(iob); 358 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac); 359 if (addr->proto == QETH_PROT_IPV6) 360 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr, 361 sizeof(struct in6_addr)); 362 else 363 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4); 364 365 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 366 367 return rc; 368 } 369 370 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len) 371 { 372 int i, j; 373 for (i = 0; i < 16; i++) { 374 j = (len) - (i * 8); 375 if (j >= 8) 376 netmask[i] = 0xff; 377 else if (j > 0) 378 netmask[i] = (u8)(0xFF00 >> j); 379 else 380 netmask[i] = 0; 381 } 382 } 383 384 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set) 385 { 386 switch (addr->type) { 387 case QETH_IP_TYPE_RXIP: 388 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 389 case QETH_IP_TYPE_VIPA: 390 return (set) ? QETH_IPA_SETIP_VIPA_FLAG : 391 QETH_IPA_DELIP_VIPA_FLAG; 392 default: 393 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 394 } 395 } 396 397 static int qeth_l3_send_setdelip(struct qeth_card *card, 398 struct qeth_ipaddr *addr, 399 enum qeth_ipa_cmds ipacmd) 400 { 401 struct qeth_cmd_buffer *iob; 402 struct qeth_ipa_cmd *cmd; 403 __u8 netmask[16]; 404 u32 flags; 405 406 QETH_CARD_TEXT(card, 4, "setdelip"); 407 408 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 409 if (!iob) 410 return -ENOMEM; 411 cmd = __ipa_cmd(iob); 412 413 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP); 414 QETH_CARD_TEXT_(card, 4, "flags%02X", flags); 415 416 if (addr->proto == QETH_PROT_IPV6) { 417 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr, 418 sizeof(struct in6_addr)); 419 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen); 420 memcpy(cmd->data.setdelip6.mask, netmask, 421 sizeof(struct in6_addr)); 422 cmd->data.setdelip6.flags = flags; 423 } else { 424 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4); 425 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4); 426 cmd->data.setdelip4.flags = flags; 427 } 428 429 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 430 } 431 432 static int qeth_l3_send_setrouting(struct qeth_card *card, 433 enum qeth_routing_types type, enum qeth_prot_versions prot) 434 { 435 int rc; 436 struct qeth_ipa_cmd *cmd; 437 struct qeth_cmd_buffer *iob; 438 439 QETH_CARD_TEXT(card, 4, "setroutg"); 440 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot); 441 if (!iob) 442 return -ENOMEM; 443 cmd = __ipa_cmd(iob); 444 cmd->data.setrtg.type = (type); 445 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 446 447 return rc; 448 } 449 450 static int qeth_l3_correct_routing_type(struct qeth_card *card, 451 enum qeth_routing_types *type, enum qeth_prot_versions prot) 452 { 453 if (card->info.type == QETH_CARD_TYPE_IQD) { 454 switch (*type) { 455 case NO_ROUTER: 456 case PRIMARY_CONNECTOR: 457 case SECONDARY_CONNECTOR: 458 case MULTICAST_ROUTER: 459 return 0; 460 default: 461 goto out_inval; 462 } 463 } else { 464 switch (*type) { 465 case NO_ROUTER: 466 case PRIMARY_ROUTER: 467 case SECONDARY_ROUTER: 468 return 0; 469 case MULTICAST_ROUTER: 470 if (qeth_is_ipafunc_supported(card, prot, 471 IPA_OSA_MC_ROUTER)) 472 return 0; 473 default: 474 goto out_inval; 475 } 476 } 477 out_inval: 478 *type = NO_ROUTER; 479 return -EINVAL; 480 } 481 482 int qeth_l3_setrouting_v4(struct qeth_card *card) 483 { 484 int rc; 485 486 QETH_CARD_TEXT(card, 3, "setrtg4"); 487 488 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, 489 QETH_PROT_IPV4); 490 if (rc) 491 return rc; 492 493 rc = qeth_l3_send_setrouting(card, card->options.route4.type, 494 QETH_PROT_IPV4); 495 if (rc) { 496 card->options.route4.type = NO_ROUTER; 497 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" 498 " on %s. Type set to 'no router'.\n", rc, 499 QETH_CARD_IFNAME(card)); 500 } 501 return rc; 502 } 503 504 int qeth_l3_setrouting_v6(struct qeth_card *card) 505 { 506 int rc = 0; 507 508 QETH_CARD_TEXT(card, 3, "setrtg6"); 509 510 if (!qeth_is_supported(card, IPA_IPV6)) 511 return 0; 512 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type, 513 QETH_PROT_IPV6); 514 if (rc) 515 return rc; 516 517 rc = qeth_l3_send_setrouting(card, card->options.route6.type, 518 QETH_PROT_IPV6); 519 if (rc) { 520 card->options.route6.type = NO_ROUTER; 521 QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" 522 " on %s. Type set to 'no router'.\n", rc, 523 QETH_CARD_IFNAME(card)); 524 } 525 return rc; 526 } 527 528 /* 529 * IP address takeover related functions 530 */ 531 532 /** 533 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs. 534 * 535 * Caller must hold ip_lock. 536 */ 537 void qeth_l3_update_ipato(struct qeth_card *card) 538 { 539 struct qeth_ipaddr *addr; 540 unsigned int i; 541 542 hash_for_each(card->ip_htable, i, addr, hnode) { 543 if (addr->type != QETH_IP_TYPE_NORMAL) 544 continue; 545 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr); 546 } 547 } 548 549 static void qeth_l3_clear_ipato_list(struct qeth_card *card) 550 { 551 struct qeth_ipato_entry *ipatoe, *tmp; 552 553 spin_lock_bh(&card->ip_lock); 554 555 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 556 list_del(&ipatoe->entry); 557 kfree(ipatoe); 558 } 559 560 qeth_l3_update_ipato(card); 561 spin_unlock_bh(&card->ip_lock); 562 } 563 564 int qeth_l3_add_ipato_entry(struct qeth_card *card, 565 struct qeth_ipato_entry *new) 566 { 567 struct qeth_ipato_entry *ipatoe; 568 int rc = 0; 569 570 QETH_CARD_TEXT(card, 2, "addipato"); 571 572 spin_lock_bh(&card->ip_lock); 573 574 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 575 if (ipatoe->proto != new->proto) 576 continue; 577 if (!memcmp(ipatoe->addr, new->addr, 578 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) && 579 (ipatoe->mask_bits == new->mask_bits)) { 580 rc = -EEXIST; 581 break; 582 } 583 } 584 585 if (!rc) { 586 list_add_tail(&new->entry, &card->ipato.entries); 587 qeth_l3_update_ipato(card); 588 } 589 590 spin_unlock_bh(&card->ip_lock); 591 592 return rc; 593 } 594 595 int qeth_l3_del_ipato_entry(struct qeth_card *card, 596 enum qeth_prot_versions proto, u8 *addr, 597 int mask_bits) 598 { 599 struct qeth_ipato_entry *ipatoe, *tmp; 600 int rc = -ENOENT; 601 602 QETH_CARD_TEXT(card, 2, "delipato"); 603 604 spin_lock_bh(&card->ip_lock); 605 606 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 607 if (ipatoe->proto != proto) 608 continue; 609 if (!memcmp(ipatoe->addr, addr, 610 (proto == QETH_PROT_IPV4)? 4:16) && 611 (ipatoe->mask_bits == mask_bits)) { 612 list_del(&ipatoe->entry); 613 qeth_l3_update_ipato(card); 614 kfree(ipatoe); 615 rc = 0; 616 } 617 } 618 619 spin_unlock_bh(&card->ip_lock); 620 return rc; 621 } 622 623 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip, 624 enum qeth_ip_types type, 625 enum qeth_prot_versions proto) 626 { 627 struct qeth_ipaddr addr; 628 int rc; 629 630 qeth_l3_init_ipaddr(&addr, type, proto); 631 if (proto == QETH_PROT_IPV4) 632 memcpy(&addr.u.a4.addr, ip, 4); 633 else 634 memcpy(&addr.u.a6.addr, ip, 16); 635 636 spin_lock_bh(&card->ip_lock); 637 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr); 638 spin_unlock_bh(&card->ip_lock); 639 return rc; 640 } 641 642 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add) 643 { 644 struct qeth_ipaddr addr; 645 int rc, i; 646 647 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 648 addr.u.a6.addr.s6_addr[0] = 0xfe; 649 addr.u.a6.addr.s6_addr[1] = 0x80; 650 for (i = 0; i < 8; i++) 651 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i]; 652 653 spin_lock_bh(&card->ip_lock); 654 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr); 655 spin_unlock_bh(&card->ip_lock); 656 return rc; 657 } 658 659 static int qeth_l3_register_addr_entry(struct qeth_card *card, 660 struct qeth_ipaddr *addr) 661 { 662 char buf[50]; 663 int rc = 0; 664 int cnt = 3; 665 666 667 if (addr->proto == QETH_PROT_IPV4) { 668 QETH_CARD_TEXT(card, 2, "setaddr4"); 669 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 670 } else if (addr->proto == QETH_PROT_IPV6) { 671 QETH_CARD_TEXT(card, 2, "setaddr6"); 672 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 673 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 674 } else { 675 QETH_CARD_TEXT(card, 2, "setaddr?"); 676 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 677 } 678 do { 679 if (addr->is_multicast) 680 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); 681 else 682 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP); 683 if (rc) 684 QETH_CARD_TEXT(card, 2, "failed"); 685 } while ((--cnt > 0) && rc); 686 if (rc) { 687 QETH_CARD_TEXT(card, 2, "FAILED"); 688 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); 689 dev_warn(&card->gdev->dev, 690 "Registering IP address %s failed\n", buf); 691 } 692 return rc; 693 } 694 695 static int qeth_l3_deregister_addr_entry(struct qeth_card *card, 696 struct qeth_ipaddr *addr) 697 { 698 int rc = 0; 699 700 if (addr->proto == QETH_PROT_IPV4) { 701 QETH_CARD_TEXT(card, 2, "deladdr4"); 702 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 703 } else if (addr->proto == QETH_PROT_IPV6) { 704 QETH_CARD_TEXT(card, 2, "deladdr6"); 705 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 706 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 707 } else { 708 QETH_CARD_TEXT(card, 2, "deladdr?"); 709 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 710 } 711 if (addr->is_multicast) 712 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); 713 else 714 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP); 715 if (rc) 716 QETH_CARD_TEXT(card, 2, "failed"); 717 718 return rc; 719 } 720 721 static int qeth_l3_setadapter_parms(struct qeth_card *card) 722 { 723 int rc = 0; 724 725 QETH_DBF_TEXT(SETUP, 2, "setadprm"); 726 727 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { 728 rc = qeth_setadpparms_change_macaddr(card); 729 if (rc) 730 dev_warn(&card->gdev->dev, "Reading the adapter MAC" 731 " address failed\n"); 732 } 733 734 return rc; 735 } 736 737 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) 738 { 739 int rc; 740 741 QETH_CARD_TEXT(card, 3, "ipaarp"); 742 743 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 744 dev_info(&card->gdev->dev, 745 "ARP processing not supported on %s!\n", 746 QETH_CARD_IFNAME(card)); 747 return 0; 748 } 749 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 750 IPA_CMD_ASS_START, 0); 751 if (rc) { 752 dev_warn(&card->gdev->dev, 753 "Starting ARP processing support for %s failed\n", 754 QETH_CARD_IFNAME(card)); 755 } 756 return rc; 757 } 758 759 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 760 { 761 int rc; 762 763 QETH_CARD_TEXT(card, 3, "stsrcmac"); 764 765 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { 766 dev_info(&card->gdev->dev, 767 "Inbound source MAC-address not supported on %s\n", 768 QETH_CARD_IFNAME(card)); 769 return -EOPNOTSUPP; 770 } 771 772 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC, 773 IPA_CMD_ASS_START, 0); 774 if (rc) 775 dev_warn(&card->gdev->dev, 776 "Starting source MAC-address support for %s failed\n", 777 QETH_CARD_IFNAME(card)); 778 return rc; 779 } 780 781 static int qeth_l3_start_ipa_vlan(struct qeth_card *card) 782 { 783 int rc = 0; 784 785 QETH_CARD_TEXT(card, 3, "strtvlan"); 786 787 if (!qeth_is_supported(card, IPA_FULL_VLAN)) { 788 dev_info(&card->gdev->dev, 789 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card)); 790 return -EOPNOTSUPP; 791 } 792 793 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO, 794 IPA_CMD_ASS_START, 0); 795 if (rc) { 796 dev_warn(&card->gdev->dev, 797 "Starting VLAN support for %s failed\n", 798 QETH_CARD_IFNAME(card)); 799 } else { 800 dev_info(&card->gdev->dev, "VLAN enabled\n"); 801 } 802 return rc; 803 } 804 805 static int qeth_l3_start_ipa_multicast(struct qeth_card *card) 806 { 807 int rc; 808 809 QETH_CARD_TEXT(card, 3, "stmcast"); 810 811 if (!qeth_is_supported(card, IPA_MULTICASTING)) { 812 dev_info(&card->gdev->dev, 813 "Multicast not supported on %s\n", 814 QETH_CARD_IFNAME(card)); 815 return -EOPNOTSUPP; 816 } 817 818 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING, 819 IPA_CMD_ASS_START, 0); 820 if (rc) { 821 dev_warn(&card->gdev->dev, 822 "Starting multicast support for %s failed\n", 823 QETH_CARD_IFNAME(card)); 824 } else { 825 dev_info(&card->gdev->dev, "Multicast enabled\n"); 826 card->dev->flags |= IFF_MULTICAST; 827 } 828 return rc; 829 } 830 831 static int qeth_l3_softsetup_ipv6(struct qeth_card *card) 832 { 833 int rc; 834 835 QETH_CARD_TEXT(card, 3, "softipv6"); 836 837 if (card->info.type == QETH_CARD_TYPE_IQD) 838 goto out; 839 840 rc = qeth_send_simple_setassparms(card, IPA_IPV6, 841 IPA_CMD_ASS_START, 3); 842 if (rc) { 843 dev_err(&card->gdev->dev, 844 "Activating IPv6 support for %s failed\n", 845 QETH_CARD_IFNAME(card)); 846 return rc; 847 } 848 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, 849 IPA_CMD_ASS_START, 0); 850 if (rc) { 851 dev_err(&card->gdev->dev, 852 "Activating IPv6 support for %s failed\n", 853 QETH_CARD_IFNAME(card)); 854 return rc; 855 } 856 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU, 857 IPA_CMD_ASS_START, 0); 858 if (rc) { 859 dev_warn(&card->gdev->dev, 860 "Enabling the passthrough mode for %s failed\n", 861 QETH_CARD_IFNAME(card)); 862 return rc; 863 } 864 out: 865 dev_info(&card->gdev->dev, "IPV6 enabled\n"); 866 return 0; 867 } 868 869 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) 870 { 871 QETH_CARD_TEXT(card, 3, "strtipv6"); 872 873 if (!qeth_is_supported(card, IPA_IPV6)) { 874 dev_info(&card->gdev->dev, 875 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card)); 876 return 0; 877 } 878 return qeth_l3_softsetup_ipv6(card); 879 } 880 881 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) 882 { 883 int rc; 884 885 QETH_CARD_TEXT(card, 3, "stbrdcst"); 886 card->info.broadcast_capable = 0; 887 if (!qeth_is_supported(card, IPA_FILTERING)) { 888 dev_info(&card->gdev->dev, 889 "Broadcast not supported on %s\n", 890 QETH_CARD_IFNAME(card)); 891 rc = -EOPNOTSUPP; 892 goto out; 893 } 894 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 895 IPA_CMD_ASS_START, 0); 896 if (rc) { 897 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for " 898 "%s failed\n", QETH_CARD_IFNAME(card)); 899 goto out; 900 } 901 902 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 903 IPA_CMD_ASS_CONFIGURE, 1); 904 if (rc) { 905 dev_warn(&card->gdev->dev, 906 "Setting up broadcast filtering for %s failed\n", 907 QETH_CARD_IFNAME(card)); 908 goto out; 909 } 910 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; 911 dev_info(&card->gdev->dev, "Broadcast enabled\n"); 912 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 913 IPA_CMD_ASS_ENABLE, 1); 914 if (rc) { 915 dev_warn(&card->gdev->dev, "Setting up broadcast echo " 916 "filtering for %s failed\n", QETH_CARD_IFNAME(card)); 917 goto out; 918 } 919 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; 920 out: 921 if (card->info.broadcast_capable) 922 card->dev->flags |= IFF_BROADCAST; 923 else 924 card->dev->flags &= ~IFF_BROADCAST; 925 return rc; 926 } 927 928 static int qeth_l3_start_ipassists(struct qeth_card *card) 929 { 930 QETH_CARD_TEXT(card, 3, "strtipas"); 931 932 if (qeth_set_access_ctrl_online(card, 0)) 933 return -EIO; 934 qeth_l3_start_ipa_arp_processing(card); /* go on*/ 935 qeth_l3_start_ipa_source_mac(card); /* go on*/ 936 qeth_l3_start_ipa_vlan(card); /* go on*/ 937 qeth_l3_start_ipa_multicast(card); /* go on*/ 938 qeth_l3_start_ipa_ipv6(card); /* go on*/ 939 qeth_l3_start_ipa_broadcast(card); /* go on*/ 940 return 0; 941 } 942 943 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, 944 struct qeth_reply *reply, unsigned long data) 945 { 946 struct qeth_ipa_cmd *cmd; 947 948 cmd = (struct qeth_ipa_cmd *) data; 949 if (cmd->hdr.return_code == 0) 950 ether_addr_copy(card->dev->dev_addr, 951 cmd->data.create_destroy_addr.unique_id); 952 else 953 eth_random_addr(card->dev->dev_addr); 954 955 return 0; 956 } 957 958 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) 959 { 960 int rc = 0; 961 struct qeth_cmd_buffer *iob; 962 struct qeth_ipa_cmd *cmd; 963 964 QETH_DBF_TEXT(SETUP, 2, "hsrmac"); 965 966 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 967 QETH_PROT_IPV6); 968 if (!iob) 969 return -ENOMEM; 970 cmd = __ipa_cmd(iob); 971 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 972 card->info.unique_id; 973 974 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, 975 NULL); 976 return rc; 977 } 978 979 static int qeth_l3_get_unique_id_cb(struct qeth_card *card, 980 struct qeth_reply *reply, unsigned long data) 981 { 982 struct qeth_ipa_cmd *cmd; 983 984 cmd = (struct qeth_ipa_cmd *) data; 985 if (cmd->hdr.return_code == 0) 986 card->info.unique_id = *((__u16 *) 987 &cmd->data.create_destroy_addr.unique_id[6]); 988 else { 989 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 990 UNIQUE_ID_NOT_BY_CARD; 991 dev_warn(&card->gdev->dev, "The network adapter failed to " 992 "generate a unique ID\n"); 993 } 994 return 0; 995 } 996 997 static int qeth_l3_get_unique_id(struct qeth_card *card) 998 { 999 int rc = 0; 1000 struct qeth_cmd_buffer *iob; 1001 struct qeth_ipa_cmd *cmd; 1002 1003 QETH_DBF_TEXT(SETUP, 2, "guniqeid"); 1004 1005 if (!qeth_is_supported(card, IPA_IPV6)) { 1006 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1007 UNIQUE_ID_NOT_BY_CARD; 1008 return 0; 1009 } 1010 1011 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 1012 QETH_PROT_IPV6); 1013 if (!iob) 1014 return -ENOMEM; 1015 cmd = __ipa_cmd(iob); 1016 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 1017 card->info.unique_id; 1018 1019 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL); 1020 return rc; 1021 } 1022 1023 static int 1024 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, 1025 unsigned long data) 1026 { 1027 struct qeth_ipa_cmd *cmd; 1028 __u16 rc; 1029 1030 QETH_DBF_TEXT(SETUP, 2, "diastrcb"); 1031 1032 cmd = (struct qeth_ipa_cmd *)data; 1033 rc = cmd->hdr.return_code; 1034 if (rc) 1035 QETH_CARD_TEXT_(card, 2, "dxter%x", rc); 1036 switch (cmd->data.diagass.action) { 1037 case QETH_DIAGS_CMD_TRACE_QUERY: 1038 break; 1039 case QETH_DIAGS_CMD_TRACE_DISABLE: 1040 switch (rc) { 1041 case 0: 1042 case IPA_RC_INVALID_SUBCMD: 1043 card->info.promisc_mode = SET_PROMISC_MODE_OFF; 1044 dev_info(&card->gdev->dev, "The HiperSockets network " 1045 "traffic analyzer is deactivated\n"); 1046 break; 1047 default: 1048 break; 1049 } 1050 break; 1051 case QETH_DIAGS_CMD_TRACE_ENABLE: 1052 switch (rc) { 1053 case 0: 1054 card->info.promisc_mode = SET_PROMISC_MODE_ON; 1055 dev_info(&card->gdev->dev, "The HiperSockets network " 1056 "traffic analyzer is activated\n"); 1057 break; 1058 case IPA_RC_HARDWARE_AUTH_ERROR: 1059 dev_warn(&card->gdev->dev, "The device is not " 1060 "authorized to run as a HiperSockets network " 1061 "traffic analyzer\n"); 1062 break; 1063 case IPA_RC_TRACE_ALREADY_ACTIVE: 1064 dev_warn(&card->gdev->dev, "A HiperSockets " 1065 "network traffic analyzer is already " 1066 "active in the HiperSockets LAN\n"); 1067 break; 1068 default: 1069 break; 1070 } 1071 break; 1072 default: 1073 QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n", 1074 cmd->data.diagass.action, QETH_CARD_IFNAME(card)); 1075 } 1076 1077 return 0; 1078 } 1079 1080 static int 1081 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) 1082 { 1083 struct qeth_cmd_buffer *iob; 1084 struct qeth_ipa_cmd *cmd; 1085 1086 QETH_DBF_TEXT(SETUP, 2, "diagtrac"); 1087 1088 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 1089 if (!iob) 1090 return -ENOMEM; 1091 cmd = __ipa_cmd(iob); 1092 cmd->data.diagass.subcmd_len = 16; 1093 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE; 1094 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; 1095 cmd->data.diagass.action = diags_cmd; 1096 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL); 1097 } 1098 1099 static void 1100 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev) 1101 { 1102 struct ip_mc_list *im4; 1103 struct qeth_ipaddr *tmp, *ipm; 1104 1105 QETH_CARD_TEXT(card, 4, "addmc"); 1106 1107 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1108 if (!tmp) 1109 return; 1110 1111 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL; 1112 im4 = rcu_dereference(im4->next_rcu)) { 1113 ip_eth_mc_map(im4->multiaddr, tmp->mac); 1114 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr); 1115 tmp->is_multicast = 1; 1116 1117 ipm = qeth_l3_find_addr_by_ip(card, tmp); 1118 if (ipm) { 1119 /* for mcast, by-IP match means full match */ 1120 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1121 } else { 1122 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1123 if (!ipm) 1124 continue; 1125 ether_addr_copy(ipm->mac, tmp->mac); 1126 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr); 1127 ipm->is_multicast = 1; 1128 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1129 hash_add(card->ip_mc_htable, 1130 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1131 } 1132 } 1133 1134 kfree(tmp); 1135 } 1136 1137 /* called with rcu_read_lock */ 1138 static void qeth_l3_add_vlan_mc(struct qeth_card *card) 1139 { 1140 struct in_device *in_dev; 1141 u16 vid; 1142 1143 QETH_CARD_TEXT(card, 4, "addmcvl"); 1144 1145 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1146 return; 1147 1148 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1149 struct net_device *netdev; 1150 1151 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1152 vid); 1153 if (netdev == NULL || 1154 !(netdev->flags & IFF_UP)) 1155 continue; 1156 in_dev = __in_dev_get_rcu(netdev); 1157 if (!in_dev) 1158 continue; 1159 qeth_l3_add_mc_to_hash(card, in_dev); 1160 } 1161 } 1162 1163 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card) 1164 { 1165 struct in_device *in4_dev; 1166 1167 QETH_CARD_TEXT(card, 4, "chkmcv4"); 1168 1169 rcu_read_lock(); 1170 in4_dev = __in_dev_get_rcu(card->dev); 1171 if (in4_dev == NULL) 1172 goto unlock; 1173 qeth_l3_add_mc_to_hash(card, in4_dev); 1174 qeth_l3_add_vlan_mc(card); 1175 unlock: 1176 rcu_read_unlock(); 1177 } 1178 1179 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card, 1180 struct inet6_dev *in6_dev) 1181 { 1182 struct qeth_ipaddr *ipm; 1183 struct ifmcaddr6 *im6; 1184 struct qeth_ipaddr *tmp; 1185 1186 QETH_CARD_TEXT(card, 4, "addmc6"); 1187 1188 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1189 if (!tmp) 1190 return; 1191 1192 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { 1193 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac); 1194 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr, 1195 sizeof(struct in6_addr)); 1196 tmp->is_multicast = 1; 1197 1198 ipm = qeth_l3_find_addr_by_ip(card, tmp); 1199 if (ipm) { 1200 /* for mcast, by-IP match means full match */ 1201 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1202 continue; 1203 } 1204 1205 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1206 if (!ipm) 1207 continue; 1208 1209 ether_addr_copy(ipm->mac, tmp->mac); 1210 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr, 1211 sizeof(struct in6_addr)); 1212 ipm->is_multicast = 1; 1213 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1214 hash_add(card->ip_mc_htable, 1215 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1216 1217 } 1218 kfree(tmp); 1219 } 1220 1221 /* called with rcu_read_lock */ 1222 static void qeth_l3_add_vlan_mc6(struct qeth_card *card) 1223 { 1224 struct inet6_dev *in_dev; 1225 u16 vid; 1226 1227 QETH_CARD_TEXT(card, 4, "admc6vl"); 1228 1229 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1230 return; 1231 1232 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1233 struct net_device *netdev; 1234 1235 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1236 vid); 1237 if (netdev == NULL || 1238 !(netdev->flags & IFF_UP)) 1239 continue; 1240 in_dev = in6_dev_get(netdev); 1241 if (!in_dev) 1242 continue; 1243 read_lock_bh(&in_dev->lock); 1244 qeth_l3_add_mc6_to_hash(card, in_dev); 1245 read_unlock_bh(&in_dev->lock); 1246 in6_dev_put(in_dev); 1247 } 1248 } 1249 1250 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card) 1251 { 1252 struct inet6_dev *in6_dev; 1253 1254 QETH_CARD_TEXT(card, 4, "chkmcv6"); 1255 1256 if (!qeth_is_supported(card, IPA_IPV6)) 1257 return ; 1258 in6_dev = in6_dev_get(card->dev); 1259 if (!in6_dev) 1260 return; 1261 1262 rcu_read_lock(); 1263 read_lock_bh(&in6_dev->lock); 1264 qeth_l3_add_mc6_to_hash(card, in6_dev); 1265 qeth_l3_add_vlan_mc6(card); 1266 read_unlock_bh(&in6_dev->lock); 1267 rcu_read_unlock(); 1268 in6_dev_put(in6_dev); 1269 } 1270 1271 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, 1272 __be16 proto, u16 vid) 1273 { 1274 struct qeth_card *card = dev->ml_priv; 1275 1276 set_bit(vid, card->active_vlans); 1277 return 0; 1278 } 1279 1280 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, 1281 __be16 proto, u16 vid) 1282 { 1283 struct qeth_card *card = dev->ml_priv; 1284 1285 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 1286 1287 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 1288 QETH_CARD_TEXT(card, 3, "kidREC"); 1289 return 0; 1290 } 1291 clear_bit(vid, card->active_vlans); 1292 qeth_l3_set_rx_mode(dev); 1293 return 0; 1294 } 1295 1296 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb, 1297 struct qeth_hdr *hdr) 1298 { 1299 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) { 1300 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 : 1301 ETH_P_IP; 1302 unsigned char tg_addr[ETH_ALEN]; 1303 1304 skb_reset_network_header(skb); 1305 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) { 1306 case QETH_CAST_MULTICAST: 1307 if (prot == ETH_P_IP) 1308 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr); 1309 else 1310 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr); 1311 1312 card->stats.multicast++; 1313 break; 1314 case QETH_CAST_BROADCAST: 1315 ether_addr_copy(tg_addr, card->dev->broadcast); 1316 card->stats.multicast++; 1317 break; 1318 default: 1319 if (card->options.sniffer) 1320 skb->pkt_type = PACKET_OTHERHOST; 1321 ether_addr_copy(tg_addr, card->dev->dev_addr); 1322 } 1323 1324 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR) 1325 card->dev->header_ops->create(skb, card->dev, prot, 1326 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac, 1327 skb->len); 1328 else 1329 card->dev->header_ops->create(skb, card->dev, prot, 1330 tg_addr, "FAKELL", skb->len); 1331 } 1332 1333 skb->protocol = eth_type_trans(skb, card->dev); 1334 1335 /* copy VLAN tag from hdr into skb */ 1336 if (!card->options.sniffer && 1337 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME | 1338 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) { 1339 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ? 1340 hdr->hdr.l3.vlan_id : 1341 hdr->hdr.l3.next_hop.rx.vlan_id; 1342 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag); 1343 } 1344 1345 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags); 1346 } 1347 1348 static int qeth_l3_process_inbound_buffer(struct qeth_card *card, 1349 int budget, int *done) 1350 { 1351 struct net_device *dev = card->dev; 1352 int work_done = 0; 1353 struct sk_buff *skb; 1354 struct qeth_hdr *hdr; 1355 unsigned int len; 1356 __u16 magic; 1357 1358 *done = 0; 1359 WARN_ON_ONCE(!budget); 1360 while (budget) { 1361 skb = qeth_core_get_next_skb(card, 1362 &card->qdio.in_q->bufs[card->rx.b_index], 1363 &card->rx.b_element, &card->rx.e_offset, &hdr); 1364 if (!skb) { 1365 *done = 1; 1366 break; 1367 } 1368 switch (hdr->hdr.l3.id) { 1369 case QETH_HEADER_TYPE_LAYER3: 1370 magic = *(__u16 *)skb->data; 1371 if ((card->info.type == QETH_CARD_TYPE_IQD) && 1372 (magic == ETH_P_AF_IUCV)) { 1373 len = skb->len; 1374 dev_hard_header(skb, dev, ETH_P_AF_IUCV, 1375 dev->dev_addr, "FAKELL", len); 1376 skb->protocol = eth_type_trans(skb, dev); 1377 netif_receive_skb(skb); 1378 } else { 1379 qeth_l3_rebuild_skb(card, skb, hdr); 1380 len = skb->len; 1381 napi_gro_receive(&card->napi, skb); 1382 } 1383 break; 1384 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */ 1385 skb->protocol = eth_type_trans(skb, skb->dev); 1386 len = skb->len; 1387 netif_receive_skb(skb); 1388 break; 1389 default: 1390 dev_kfree_skb_any(skb); 1391 QETH_CARD_TEXT(card, 3, "inbunkno"); 1392 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr)); 1393 continue; 1394 } 1395 work_done++; 1396 budget--; 1397 card->stats.rx_packets++; 1398 card->stats.rx_bytes += len; 1399 } 1400 return work_done; 1401 } 1402 1403 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode) 1404 { 1405 QETH_DBF_TEXT(SETUP, 2, "stopcard"); 1406 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1407 1408 qeth_set_allowed_threads(card, 0, 1); 1409 if (card->options.sniffer && 1410 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) 1411 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1412 if (card->read.state == CH_STATE_UP && 1413 card->write.state == CH_STATE_UP && 1414 (card->state == CARD_STATE_UP)) { 1415 if (recovery_mode) 1416 qeth_l3_stop(card->dev); 1417 else { 1418 rtnl_lock(); 1419 dev_close(card->dev); 1420 rtnl_unlock(); 1421 } 1422 card->state = CARD_STATE_SOFTSETUP; 1423 } 1424 if (card->state == CARD_STATE_SOFTSETUP) { 1425 qeth_l3_clear_ip_htable(card, 1); 1426 qeth_clear_ipacmd_list(card); 1427 card->state = CARD_STATE_HARDSETUP; 1428 } 1429 if (card->state == CARD_STATE_HARDSETUP) { 1430 qeth_qdio_clear_card(card, 0); 1431 qeth_clear_qdio_buffers(card); 1432 qeth_clear_working_pool_list(card); 1433 card->state = CARD_STATE_DOWN; 1434 } 1435 if (card->state == CARD_STATE_DOWN) { 1436 qeth_clear_cmd_buffers(&card->read); 1437 qeth_clear_cmd_buffers(&card->write); 1438 } 1439 } 1440 1441 /* 1442 * test for and Switch promiscuous mode (on or off) 1443 * either for guestlan or HiperSocket Sniffer 1444 */ 1445 static void 1446 qeth_l3_handle_promisc_mode(struct qeth_card *card) 1447 { 1448 struct net_device *dev = card->dev; 1449 1450 if (((dev->flags & IFF_PROMISC) && 1451 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 1452 (!(dev->flags & IFF_PROMISC) && 1453 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 1454 return; 1455 1456 if (card->info.guestlan) { /* Guestlan trace */ 1457 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1458 qeth_setadp_promisc_mode(card); 1459 } else if (card->options.sniffer && /* HiperSockets trace */ 1460 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 1461 if (dev->flags & IFF_PROMISC) { 1462 QETH_CARD_TEXT(card, 3, "+promisc"); 1463 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE); 1464 } else { 1465 QETH_CARD_TEXT(card, 3, "-promisc"); 1466 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1467 } 1468 } 1469 } 1470 1471 static void qeth_l3_set_rx_mode(struct net_device *dev) 1472 { 1473 struct qeth_card *card = dev->ml_priv; 1474 struct qeth_ipaddr *addr; 1475 struct hlist_node *tmp; 1476 int i, rc; 1477 1478 QETH_CARD_TEXT(card, 3, "setmulti"); 1479 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 1480 (card->state != CARD_STATE_UP)) 1481 return; 1482 if (!card->options.sniffer) { 1483 spin_lock_bh(&card->mclock); 1484 1485 qeth_l3_add_multicast_ipv4(card); 1486 qeth_l3_add_multicast_ipv6(card); 1487 1488 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 1489 switch (addr->disp_flag) { 1490 case QETH_DISP_ADDR_DELETE: 1491 rc = qeth_l3_deregister_addr_entry(card, addr); 1492 if (!rc || rc == IPA_RC_MC_ADDR_NOT_FOUND) { 1493 hash_del(&addr->hnode); 1494 kfree(addr); 1495 } 1496 break; 1497 case QETH_DISP_ADDR_ADD: 1498 rc = qeth_l3_register_addr_entry(card, addr); 1499 if (rc && rc != IPA_RC_LAN_OFFLINE) { 1500 hash_del(&addr->hnode); 1501 kfree(addr); 1502 break; 1503 } 1504 addr->ref_counter = 1; 1505 /* fall through */ 1506 default: 1507 /* for next call to set_rx_mode(): */ 1508 addr->disp_flag = QETH_DISP_ADDR_DELETE; 1509 } 1510 } 1511 1512 spin_unlock_bh(&card->mclock); 1513 1514 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1515 return; 1516 } 1517 qeth_l3_handle_promisc_mode(card); 1518 } 1519 1520 static const char *qeth_l3_arp_get_error_cause(int *rc) 1521 { 1522 switch (*rc) { 1523 case QETH_IPA_ARP_RC_FAILED: 1524 *rc = -EIO; 1525 return "operation failed"; 1526 case QETH_IPA_ARP_RC_NOTSUPP: 1527 *rc = -EOPNOTSUPP; 1528 return "operation not supported"; 1529 case QETH_IPA_ARP_RC_OUT_OF_RANGE: 1530 *rc = -EINVAL; 1531 return "argument out of range"; 1532 case QETH_IPA_ARP_RC_Q_NOTSUPP: 1533 *rc = -EOPNOTSUPP; 1534 return "query operation not supported"; 1535 case QETH_IPA_ARP_RC_Q_NO_DATA: 1536 *rc = -ENOENT; 1537 return "no query data available"; 1538 default: 1539 return "unknown error"; 1540 } 1541 } 1542 1543 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) 1544 { 1545 int tmp; 1546 int rc; 1547 1548 QETH_CARD_TEXT(card, 3, "arpstnoe"); 1549 1550 /* 1551 * currently GuestLAN only supports the ARP assist function 1552 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; 1553 * thus we say EOPNOTSUPP for this ARP function 1554 */ 1555 if (card->info.guestlan) 1556 return -EOPNOTSUPP; 1557 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1558 return -EOPNOTSUPP; 1559 } 1560 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 1561 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 1562 no_entries); 1563 if (rc) { 1564 tmp = rc; 1565 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on " 1566 "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card), 1567 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 1568 } 1569 return rc; 1570 } 1571 1572 static __u32 get_arp_entry_size(struct qeth_card *card, 1573 struct qeth_arp_query_data *qdata, 1574 struct qeth_arp_entrytype *type, __u8 strip_entries) 1575 { 1576 __u32 rc; 1577 __u8 is_hsi; 1578 1579 is_hsi = qdata->reply_bits == 5; 1580 if (type->ip == QETHARP_IP_ADDR_V4) { 1581 QETH_CARD_TEXT(card, 4, "arpev4"); 1582 if (strip_entries) { 1583 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : 1584 sizeof(struct qeth_arp_qi_entry7_short); 1585 } else { 1586 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : 1587 sizeof(struct qeth_arp_qi_entry7); 1588 } 1589 } else if (type->ip == QETHARP_IP_ADDR_V6) { 1590 QETH_CARD_TEXT(card, 4, "arpev6"); 1591 if (strip_entries) { 1592 rc = is_hsi ? 1593 sizeof(struct qeth_arp_qi_entry5_short_ipv6) : 1594 sizeof(struct qeth_arp_qi_entry7_short_ipv6); 1595 } else { 1596 rc = is_hsi ? 1597 sizeof(struct qeth_arp_qi_entry5_ipv6) : 1598 sizeof(struct qeth_arp_qi_entry7_ipv6); 1599 } 1600 } else { 1601 QETH_CARD_TEXT(card, 4, "arpinv"); 1602 rc = 0; 1603 } 1604 1605 return rc; 1606 } 1607 1608 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) 1609 { 1610 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || 1611 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); 1612 } 1613 1614 static int qeth_l3_arp_query_cb(struct qeth_card *card, 1615 struct qeth_reply *reply, unsigned long data) 1616 { 1617 struct qeth_ipa_cmd *cmd; 1618 struct qeth_arp_query_data *qdata; 1619 struct qeth_arp_query_info *qinfo; 1620 int i; 1621 int e; 1622 int entrybytes_done; 1623 int stripped_bytes; 1624 __u8 do_strip_entries; 1625 1626 QETH_CARD_TEXT(card, 3, "arpquecb"); 1627 1628 qinfo = (struct qeth_arp_query_info *) reply->param; 1629 cmd = (struct qeth_ipa_cmd *) data; 1630 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version); 1631 if (cmd->hdr.return_code) { 1632 QETH_CARD_TEXT(card, 4, "arpcberr"); 1633 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1634 return 0; 1635 } 1636 if (cmd->data.setassparms.hdr.return_code) { 1637 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 1638 QETH_CARD_TEXT(card, 4, "setaperr"); 1639 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1640 return 0; 1641 } 1642 qdata = &cmd->data.setassparms.data.query_arp; 1643 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries); 1644 1645 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; 1646 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; 1647 entrybytes_done = 0; 1648 for (e = 0; e < qdata->no_entries; ++e) { 1649 char *cur_entry; 1650 __u32 esize; 1651 struct qeth_arp_entrytype *etype; 1652 1653 cur_entry = &qdata->data + entrybytes_done; 1654 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; 1655 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) { 1656 QETH_CARD_TEXT(card, 4, "pmis"); 1657 QETH_CARD_TEXT_(card, 4, "%i", etype->ip); 1658 break; 1659 } 1660 esize = get_arp_entry_size(card, qdata, etype, 1661 do_strip_entries); 1662 QETH_CARD_TEXT_(card, 5, "esz%i", esize); 1663 if (!esize) 1664 break; 1665 1666 if ((qinfo->udata_len - qinfo->udata_offset) < esize) { 1667 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM); 1668 cmd->hdr.return_code = IPA_RC_ENOMEM; 1669 goto out_error; 1670 } 1671 1672 memcpy(qinfo->udata + qinfo->udata_offset, 1673 &qdata->data + entrybytes_done + stripped_bytes, 1674 esize); 1675 entrybytes_done += esize + stripped_bytes; 1676 qinfo->udata_offset += esize; 1677 ++qinfo->no_entries; 1678 } 1679 /* check if all replies received ... */ 1680 if (cmd->data.setassparms.hdr.seq_no < 1681 cmd->data.setassparms.hdr.number_of_replies) 1682 return 1; 1683 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries); 1684 memcpy(qinfo->udata, &qinfo->no_entries, 4); 1685 /* keep STRIP_ENTRIES flag so the user program can distinguish 1686 * stripped entries from normal ones */ 1687 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) 1688 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; 1689 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); 1690 QETH_CARD_TEXT_(card, 4, "rc%i", 0); 1691 return 0; 1692 out_error: 1693 i = 0; 1694 memcpy(qinfo->udata, &i, 4); 1695 return 0; 1696 } 1697 1698 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card, 1699 struct qeth_cmd_buffer *iob, int len, 1700 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 1701 unsigned long), 1702 void *reply_param) 1703 { 1704 QETH_CARD_TEXT(card, 4, "sendarp"); 1705 1706 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 1707 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 1708 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 1709 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 1710 reply_cb, reply_param); 1711 } 1712 1713 static int qeth_l3_query_arp_cache_info(struct qeth_card *card, 1714 enum qeth_prot_versions prot, 1715 struct qeth_arp_query_info *qinfo) 1716 { 1717 struct qeth_cmd_buffer *iob; 1718 struct qeth_ipa_cmd *cmd; 1719 int tmp; 1720 int rc; 1721 1722 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); 1723 1724 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1725 IPA_CMD_ASS_ARP_QUERY_INFO, 1726 sizeof(struct qeth_arp_query_data) 1727 - sizeof(char), 1728 prot); 1729 if (!iob) 1730 return -ENOMEM; 1731 cmd = __ipa_cmd(iob); 1732 cmd->data.setassparms.data.query_arp.request_bits = 0x000F; 1733 cmd->data.setassparms.data.query_arp.reply_bits = 0; 1734 cmd->data.setassparms.data.query_arp.no_entries = 0; 1735 rc = qeth_l3_send_ipa_arp_cmd(card, iob, 1736 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN, 1737 qeth_l3_arp_query_cb, (void *)qinfo); 1738 if (rc) { 1739 tmp = rc; 1740 QETH_DBF_MESSAGE(2, 1741 "Error while querying ARP cache on %s: %s " 1742 "(0x%x/%d)\n", QETH_CARD_IFNAME(card), 1743 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 1744 } 1745 1746 return rc; 1747 } 1748 1749 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) 1750 { 1751 struct qeth_arp_query_info qinfo = {0, }; 1752 int rc; 1753 1754 QETH_CARD_TEXT(card, 3, "arpquery"); 1755 1756 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ 1757 IPA_ARP_PROCESSING)) { 1758 QETH_CARD_TEXT(card, 3, "arpqnsup"); 1759 rc = -EOPNOTSUPP; 1760 goto out; 1761 } 1762 /* get size of userspace buffer and mask_bits -> 6 bytes */ 1763 if (copy_from_user(&qinfo, udata, 6)) { 1764 rc = -EFAULT; 1765 goto out; 1766 } 1767 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 1768 if (!qinfo.udata) { 1769 rc = -ENOMEM; 1770 goto out; 1771 } 1772 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; 1773 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo); 1774 if (rc) { 1775 if (copy_to_user(udata, qinfo.udata, 4)) 1776 rc = -EFAULT; 1777 goto free_and_out; 1778 } 1779 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { 1780 /* fails in case of GuestLAN QDIO mode */ 1781 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo); 1782 } 1783 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) { 1784 QETH_CARD_TEXT(card, 4, "qactf"); 1785 rc = -EFAULT; 1786 goto free_and_out; 1787 } 1788 QETH_CARD_TEXT(card, 4, "qacts"); 1789 1790 free_and_out: 1791 kfree(qinfo.udata); 1792 out: 1793 return rc; 1794 } 1795 1796 static int qeth_l3_arp_add_entry(struct qeth_card *card, 1797 struct qeth_arp_cache_entry *entry) 1798 { 1799 struct qeth_cmd_buffer *iob; 1800 char buf[16]; 1801 int tmp; 1802 int rc; 1803 1804 QETH_CARD_TEXT(card, 3, "arpadent"); 1805 1806 /* 1807 * currently GuestLAN only supports the ARP assist function 1808 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; 1809 * thus we say EOPNOTSUPP for this ARP function 1810 */ 1811 if (card->info.guestlan) 1812 return -EOPNOTSUPP; 1813 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1814 return -EOPNOTSUPP; 1815 } 1816 1817 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1818 IPA_CMD_ASS_ARP_ADD_ENTRY, 1819 sizeof(struct qeth_arp_cache_entry), 1820 QETH_PROT_IPV4); 1821 if (!iob) 1822 return -ENOMEM; 1823 rc = qeth_send_setassparms(card, iob, 1824 sizeof(struct qeth_arp_cache_entry), 1825 (unsigned long) entry, 1826 qeth_setassparms_cb, NULL); 1827 if (rc) { 1828 tmp = rc; 1829 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); 1830 QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s " 1831 "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), 1832 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 1833 } 1834 return rc; 1835 } 1836 1837 static int qeth_l3_arp_remove_entry(struct qeth_card *card, 1838 struct qeth_arp_cache_entry *entry) 1839 { 1840 struct qeth_cmd_buffer *iob; 1841 char buf[16] = {0, }; 1842 int tmp; 1843 int rc; 1844 1845 QETH_CARD_TEXT(card, 3, "arprment"); 1846 1847 /* 1848 * currently GuestLAN only supports the ARP assist function 1849 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY; 1850 * thus we say EOPNOTSUPP for this ARP function 1851 */ 1852 if (card->info.guestlan) 1853 return -EOPNOTSUPP; 1854 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1855 return -EOPNOTSUPP; 1856 } 1857 memcpy(buf, entry, 12); 1858 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1859 IPA_CMD_ASS_ARP_REMOVE_ENTRY, 1860 12, 1861 QETH_PROT_IPV4); 1862 if (!iob) 1863 return -ENOMEM; 1864 rc = qeth_send_setassparms(card, iob, 1865 12, (unsigned long)buf, 1866 qeth_setassparms_cb, NULL); 1867 if (rc) { 1868 tmp = rc; 1869 memset(buf, 0, 16); 1870 qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); 1871 QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s" 1872 " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), 1873 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 1874 } 1875 return rc; 1876 } 1877 1878 static int qeth_l3_arp_flush_cache(struct qeth_card *card) 1879 { 1880 int rc; 1881 int tmp; 1882 1883 QETH_CARD_TEXT(card, 3, "arpflush"); 1884 1885 /* 1886 * currently GuestLAN only supports the ARP assist function 1887 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; 1888 * thus we say EOPNOTSUPP for this ARP function 1889 */ 1890 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD)) 1891 return -EOPNOTSUPP; 1892 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1893 return -EOPNOTSUPP; 1894 } 1895 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 1896 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0); 1897 if (rc) { 1898 tmp = rc; 1899 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s " 1900 "(0x%x/%d)\n", QETH_CARD_IFNAME(card), 1901 qeth_l3_arp_get_error_cause(&rc), tmp, tmp); 1902 } 1903 return rc; 1904 } 1905 1906 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 1907 { 1908 struct qeth_card *card = dev->ml_priv; 1909 struct qeth_arp_cache_entry arp_entry; 1910 int rc = 0; 1911 1912 switch (cmd) { 1913 case SIOC_QETH_ARP_SET_NO_ENTRIES: 1914 if (!capable(CAP_NET_ADMIN)) { 1915 rc = -EPERM; 1916 break; 1917 } 1918 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); 1919 break; 1920 case SIOC_QETH_ARP_QUERY_INFO: 1921 if (!capable(CAP_NET_ADMIN)) { 1922 rc = -EPERM; 1923 break; 1924 } 1925 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data); 1926 break; 1927 case SIOC_QETH_ARP_ADD_ENTRY: 1928 if (!capable(CAP_NET_ADMIN)) { 1929 rc = -EPERM; 1930 break; 1931 } 1932 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data, 1933 sizeof(struct qeth_arp_cache_entry))) 1934 rc = -EFAULT; 1935 else 1936 rc = qeth_l3_arp_add_entry(card, &arp_entry); 1937 break; 1938 case SIOC_QETH_ARP_REMOVE_ENTRY: 1939 if (!capable(CAP_NET_ADMIN)) { 1940 rc = -EPERM; 1941 break; 1942 } 1943 if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data, 1944 sizeof(struct qeth_arp_cache_entry))) 1945 rc = -EFAULT; 1946 else 1947 rc = qeth_l3_arp_remove_entry(card, &arp_entry); 1948 break; 1949 case SIOC_QETH_ARP_FLUSH_CACHE: 1950 if (!capable(CAP_NET_ADMIN)) { 1951 rc = -EPERM; 1952 break; 1953 } 1954 rc = qeth_l3_arp_flush_cache(card); 1955 break; 1956 default: 1957 rc = -EOPNOTSUPP; 1958 } 1959 return rc; 1960 } 1961 1962 static int qeth_l3_get_cast_type(struct sk_buff *skb) 1963 { 1964 struct neighbour *n = NULL; 1965 struct dst_entry *dst; 1966 1967 rcu_read_lock(); 1968 dst = skb_dst(skb); 1969 if (dst) 1970 n = dst_neigh_lookup_skb(dst, skb); 1971 if (n) { 1972 int cast_type = n->type; 1973 1974 rcu_read_unlock(); 1975 neigh_release(n); 1976 if ((cast_type == RTN_BROADCAST) || 1977 (cast_type == RTN_MULTICAST) || 1978 (cast_type == RTN_ANYCAST)) 1979 return cast_type; 1980 return RTN_UNICAST; 1981 } 1982 rcu_read_unlock(); 1983 1984 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */ 1985 switch (qeth_get_ip_version(skb)) { 1986 case 4: 1987 return ipv4_is_multicast(ip_hdr(skb)->daddr) ? 1988 RTN_MULTICAST : RTN_UNICAST; 1989 case 6: 1990 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ? 1991 RTN_MULTICAST : RTN_UNICAST; 1992 default: 1993 /* ... and MAC address */ 1994 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, 1995 skb->dev->broadcast)) 1996 return RTN_BROADCAST; 1997 if (is_multicast_ether_addr(eth_hdr(skb)->h_dest)) 1998 return RTN_MULTICAST; 1999 /* default to unicast */ 2000 return RTN_UNICAST; 2001 } 2002 } 2003 2004 static void qeth_l3_fill_af_iucv_hdr(struct qeth_hdr *hdr, struct sk_buff *skb, 2005 unsigned int data_len) 2006 { 2007 char daddr[16]; 2008 2009 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 2010 hdr->hdr.l3.length = data_len; 2011 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST; 2012 2013 memset(daddr, 0, sizeof(daddr)); 2014 daddr[0] = 0xfe; 2015 daddr[1] = 0x80; 2016 memcpy(&daddr[8], iucv_trans_hdr(skb)->destUserID, 8); 2017 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, daddr, 16); 2018 } 2019 2020 static u8 qeth_l3_cast_type_to_flag(int cast_type) 2021 { 2022 if (cast_type == RTN_MULTICAST) 2023 return QETH_CAST_MULTICAST; 2024 if (cast_type == RTN_ANYCAST) 2025 return QETH_CAST_ANYCAST; 2026 if (cast_type == RTN_BROADCAST) 2027 return QETH_CAST_BROADCAST; 2028 return QETH_CAST_UNICAST; 2029 } 2030 2031 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 2032 struct sk_buff *skb, int ipv, int cast_type, 2033 unsigned int data_len) 2034 { 2035 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 2036 2037 hdr->hdr.l3.length = data_len; 2038 2039 if (skb_is_gso(skb)) { 2040 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO; 2041 } else { 2042 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 2043 if (skb->ip_summed == CHECKSUM_PARTIAL) { 2044 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv); 2045 /* some HW requires combined L3+L4 csum offload: */ 2046 if (ipv == 4) 2047 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ; 2048 if (card->options.performance_stats) 2049 card->perf_stats.tx_csum++; 2050 } 2051 } 2052 2053 if (ipv == 4 || IS_IQD(card)) { 2054 /* NETIF_F_HW_VLAN_CTAG_TX */ 2055 if (skb_vlan_tag_present(skb)) { 2056 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME; 2057 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); 2058 } 2059 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) { 2060 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG; 2061 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); 2062 } 2063 2064 /* OSA only: */ 2065 if (!ipv) { 2066 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU; 2067 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, 2068 skb->dev->broadcast)) 2069 hdr->hdr.l3.flags |= QETH_CAST_BROADCAST; 2070 else 2071 hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ? 2072 QETH_CAST_MULTICAST : QETH_CAST_UNICAST; 2073 return; 2074 } 2075 2076 hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type); 2077 rcu_read_lock(); 2078 if (ipv == 4) { 2079 struct rtable *rt = skb_rtable(skb); 2080 2081 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ? 2082 rt_nexthop(rt, ip_hdr(skb)->daddr) : 2083 ip_hdr(skb)->daddr; 2084 } else { 2085 /* IPv6 */ 2086 const struct rt6_info *rt = skb_rt6_info(skb); 2087 const struct in6_addr *next_hop; 2088 2089 if (rt && !ipv6_addr_any(&rt->rt6i_gateway)) 2090 next_hop = &rt->rt6i_gateway; 2091 else 2092 next_hop = &ipv6_hdr(skb)->daddr; 2093 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, next_hop, 16); 2094 2095 hdr->hdr.l3.flags |= QETH_HDR_IPV6; 2096 if (card->info.type != QETH_CARD_TYPE_IQD) 2097 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU; 2098 } 2099 rcu_read_unlock(); 2100 } 2101 2102 static void qeth_l3_fixup_headers(struct sk_buff *skb) 2103 { 2104 struct iphdr *iph = ip_hdr(skb); 2105 2106 /* this is safe, IPv6 traffic takes a different path */ 2107 if (skb->ip_summed == CHECKSUM_PARTIAL) 2108 iph->check = 0; 2109 if (skb_is_gso(skb)) { 2110 iph->tot_len = 0; 2111 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr, 2112 iph->daddr, 0); 2113 } 2114 } 2115 2116 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb, 2117 struct qeth_qdio_out_q *queue, int ipv, int cast_type) 2118 { 2119 unsigned int hw_hdr_len, proto_len, frame_len, elements; 2120 unsigned char eth_hdr[ETH_HLEN]; 2121 bool is_tso = skb_is_gso(skb); 2122 unsigned int data_offset = 0; 2123 struct qeth_hdr *hdr = NULL; 2124 unsigned int hd_len = 0; 2125 int push_len, rc; 2126 bool is_sg; 2127 2128 if (is_tso) { 2129 hw_hdr_len = sizeof(struct qeth_hdr_tso); 2130 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb) - 2131 ETH_HLEN; 2132 } else { 2133 hw_hdr_len = sizeof(struct qeth_hdr); 2134 proto_len = 0; 2135 } 2136 2137 /* re-use the L2 header area for the HW header: */ 2138 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN); 2139 if (rc) 2140 return rc; 2141 skb_copy_from_linear_data(skb, eth_hdr, ETH_HLEN); 2142 skb_pull(skb, ETH_HLEN); 2143 frame_len = skb->len; 2144 2145 qeth_l3_fixup_headers(skb); 2146 push_len = qeth_add_hw_header(card, skb, &hdr, hw_hdr_len, proto_len, 2147 &elements); 2148 if (push_len < 0) 2149 return push_len; 2150 if (is_tso || !push_len) { 2151 /* HW header needs its own buffer element. */ 2152 hd_len = hw_hdr_len + proto_len; 2153 data_offset = push_len + proto_len; 2154 } 2155 memset(hdr, 0, hw_hdr_len); 2156 2157 if (skb->protocol == htons(ETH_P_AF_IUCV)) { 2158 qeth_l3_fill_af_iucv_hdr(hdr, skb, frame_len); 2159 } else { 2160 qeth_l3_fill_header(card, hdr, skb, ipv, cast_type, frame_len); 2161 if (is_tso) 2162 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr, 2163 frame_len - proto_len, skb, 2164 proto_len); 2165 } 2166 2167 is_sg = skb_is_nonlinear(skb); 2168 if (IS_IQD(card)) { 2169 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, 2170 hd_len); 2171 } else { 2172 /* TODO: drop skb_orphan() once TX completion is fast enough */ 2173 skb_orphan(skb); 2174 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset, 2175 hd_len, elements); 2176 } 2177 2178 if (!rc) { 2179 if (card->options.performance_stats) { 2180 card->perf_stats.buf_elements_sent += elements; 2181 if (is_sg) 2182 card->perf_stats.sg_skbs_sent++; 2183 if (is_tso) { 2184 card->perf_stats.large_send_bytes += frame_len; 2185 card->perf_stats.large_send_cnt++; 2186 } 2187 } 2188 } else { 2189 if (!push_len) 2190 kmem_cache_free(qeth_core_header_cache, hdr); 2191 if (rc == -EBUSY) { 2192 /* roll back to ETH header */ 2193 skb_pull(skb, push_len); 2194 skb_push(skb, ETH_HLEN); 2195 skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN); 2196 } 2197 } 2198 return rc; 2199 } 2200 2201 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, 2202 struct net_device *dev) 2203 { 2204 int cast_type = qeth_l3_get_cast_type(skb); 2205 struct qeth_card *card = dev->ml_priv; 2206 int ipv = qeth_get_ip_version(skb); 2207 struct qeth_qdio_out_q *queue; 2208 int tx_bytes = skb->len; 2209 int rc; 2210 2211 if (IS_IQD(card)) { 2212 if (card->options.sniffer) 2213 goto tx_drop; 2214 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) || 2215 (card->options.cq == QETH_CQ_ENABLED && 2216 skb->protocol != htons(ETH_P_AF_IUCV))) 2217 goto tx_drop; 2218 } 2219 2220 if (card->state != CARD_STATE_UP) { 2221 card->stats.tx_carrier_errors++; 2222 goto tx_drop; 2223 } 2224 2225 if (cast_type == RTN_BROADCAST && !card->info.broadcast_capable) 2226 goto tx_drop; 2227 2228 queue = qeth_get_tx_queue(card, skb, ipv, cast_type); 2229 2230 if (card->options.performance_stats) { 2231 card->perf_stats.outbound_cnt++; 2232 card->perf_stats.outbound_start_time = qeth_get_micros(); 2233 } 2234 netif_stop_queue(dev); 2235 2236 if (ipv == 4 || IS_IQD(card)) 2237 rc = qeth_l3_xmit(card, skb, queue, ipv, cast_type); 2238 else 2239 rc = qeth_xmit(card, skb, queue, ipv, cast_type, 2240 qeth_l3_fill_header); 2241 2242 if (!rc) { 2243 card->stats.tx_packets++; 2244 card->stats.tx_bytes += tx_bytes; 2245 if (card->options.performance_stats) 2246 card->perf_stats.outbound_time += qeth_get_micros() - 2247 card->perf_stats.outbound_start_time; 2248 netif_wake_queue(dev); 2249 return NETDEV_TX_OK; 2250 } else if (rc == -EBUSY) { 2251 return NETDEV_TX_BUSY; 2252 } /* else fall through */ 2253 2254 tx_drop: 2255 card->stats.tx_dropped++; 2256 card->stats.tx_errors++; 2257 dev_kfree_skb_any(skb); 2258 netif_wake_queue(dev); 2259 return NETDEV_TX_OK; 2260 } 2261 2262 static int __qeth_l3_open(struct net_device *dev) 2263 { 2264 struct qeth_card *card = dev->ml_priv; 2265 int rc = 0; 2266 2267 QETH_CARD_TEXT(card, 4, "qethopen"); 2268 if (card->state == CARD_STATE_UP) 2269 return rc; 2270 if (card->state != CARD_STATE_SOFTSETUP) 2271 return -ENODEV; 2272 card->data.state = CH_STATE_UP; 2273 card->state = CARD_STATE_UP; 2274 netif_start_queue(dev); 2275 2276 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 2277 napi_enable(&card->napi); 2278 local_bh_disable(); 2279 napi_schedule(&card->napi); 2280 /* kick-start the NAPI softirq: */ 2281 local_bh_enable(); 2282 } else 2283 rc = -EIO; 2284 return rc; 2285 } 2286 2287 static int qeth_l3_open(struct net_device *dev) 2288 { 2289 struct qeth_card *card = dev->ml_priv; 2290 2291 QETH_CARD_TEXT(card, 5, "qethope_"); 2292 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 2293 QETH_CARD_TEXT(card, 3, "openREC"); 2294 return -ERESTARTSYS; 2295 } 2296 return __qeth_l3_open(dev); 2297 } 2298 2299 static int qeth_l3_stop(struct net_device *dev) 2300 { 2301 struct qeth_card *card = dev->ml_priv; 2302 2303 QETH_CARD_TEXT(card, 4, "qethstop"); 2304 netif_tx_disable(dev); 2305 if (card->state == CARD_STATE_UP) { 2306 card->state = CARD_STATE_SOFTSETUP; 2307 napi_disable(&card->napi); 2308 } 2309 return 0; 2310 } 2311 2312 static const struct ethtool_ops qeth_l3_ethtool_ops = { 2313 .get_link = ethtool_op_get_link, 2314 .get_strings = qeth_core_get_strings, 2315 .get_ethtool_stats = qeth_core_get_ethtool_stats, 2316 .get_sset_count = qeth_core_get_sset_count, 2317 .get_drvinfo = qeth_core_get_drvinfo, 2318 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 2319 }; 2320 2321 /* 2322 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting 2323 * NOARP on the netdevice is no option because it also turns off neighbor 2324 * solicitation. For IPv4 we install a neighbor_setup function. We don't want 2325 * arp resolution but we want the hard header (packet socket will work 2326 * e.g. tcpdump) 2327 */ 2328 static int qeth_l3_neigh_setup_noarp(struct neighbour *n) 2329 { 2330 n->nud_state = NUD_NOARP; 2331 memcpy(n->ha, "FAKELL", 6); 2332 n->output = n->ops->connected_output; 2333 return 0; 2334 } 2335 2336 static int 2337 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) 2338 { 2339 if (np->tbl->family == AF_INET) 2340 np->neigh_setup = qeth_l3_neigh_setup_noarp; 2341 2342 return 0; 2343 } 2344 2345 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb, 2346 struct net_device *dev, 2347 netdev_features_t features) 2348 { 2349 if (qeth_get_ip_version(skb) != 4) 2350 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 2351 return qeth_features_check(skb, dev, features); 2352 } 2353 2354 static const struct net_device_ops qeth_l3_netdev_ops = { 2355 .ndo_open = qeth_l3_open, 2356 .ndo_stop = qeth_l3_stop, 2357 .ndo_get_stats = qeth_get_stats, 2358 .ndo_start_xmit = qeth_l3_hard_start_xmit, 2359 .ndo_validate_addr = eth_validate_addr, 2360 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 2361 .ndo_do_ioctl = qeth_do_ioctl, 2362 .ndo_fix_features = qeth_fix_features, 2363 .ndo_set_features = qeth_set_features, 2364 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 2365 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 2366 .ndo_tx_timeout = qeth_tx_timeout, 2367 }; 2368 2369 static const struct net_device_ops qeth_l3_osa_netdev_ops = { 2370 .ndo_open = qeth_l3_open, 2371 .ndo_stop = qeth_l3_stop, 2372 .ndo_get_stats = qeth_get_stats, 2373 .ndo_start_xmit = qeth_l3_hard_start_xmit, 2374 .ndo_features_check = qeth_l3_osa_features_check, 2375 .ndo_validate_addr = eth_validate_addr, 2376 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 2377 .ndo_do_ioctl = qeth_do_ioctl, 2378 .ndo_fix_features = qeth_fix_features, 2379 .ndo_set_features = qeth_set_features, 2380 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 2381 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 2382 .ndo_tx_timeout = qeth_tx_timeout, 2383 .ndo_neigh_setup = qeth_l3_neigh_setup, 2384 }; 2385 2386 static int qeth_l3_setup_netdev(struct qeth_card *card) 2387 { 2388 unsigned int headroom; 2389 int rc; 2390 2391 if (card->dev->netdev_ops) 2392 return 0; 2393 2394 if (card->info.type == QETH_CARD_TYPE_OSD || 2395 card->info.type == QETH_CARD_TYPE_OSX) { 2396 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) || 2397 (card->info.link_type == QETH_LINK_TYPE_HSTR)) { 2398 pr_info("qeth_l3: ignoring TR device\n"); 2399 return -ENODEV; 2400 } 2401 2402 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; 2403 2404 /*IPv6 address autoconfiguration stuff*/ 2405 qeth_l3_get_unique_id(card); 2406 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD)) 2407 card->dev->dev_id = card->info.unique_id & 0xffff; 2408 2409 if (!card->info.guestlan) { 2410 card->dev->features |= NETIF_F_SG; 2411 card->dev->hw_features |= NETIF_F_TSO | 2412 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 2413 card->dev->vlan_features |= NETIF_F_TSO | 2414 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 2415 } 2416 2417 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 2418 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 2419 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 2420 } 2421 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 2422 card->dev->hw_features |= NETIF_F_TSO6; 2423 card->dev->vlan_features |= NETIF_F_TSO6; 2424 } 2425 2426 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */ 2427 if (card->dev->hw_features & NETIF_F_TSO6) 2428 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN; 2429 else if (card->dev->hw_features & NETIF_F_TSO) 2430 headroom = sizeof(struct qeth_hdr_tso); 2431 else 2432 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN; 2433 } else if (card->info.type == QETH_CARD_TYPE_IQD) { 2434 card->dev->flags |= IFF_NOARP; 2435 card->dev->netdev_ops = &qeth_l3_netdev_ops; 2436 headroom = sizeof(struct qeth_hdr) - ETH_HLEN; 2437 2438 rc = qeth_l3_iqd_read_initial_mac(card); 2439 if (rc) 2440 goto out; 2441 2442 if (card->options.hsuid[0]) 2443 memcpy(card->dev->perm_addr, card->options.hsuid, 9); 2444 } else 2445 return -ENODEV; 2446 2447 card->dev->needed_headroom = headroom; 2448 card->dev->ethtool_ops = &qeth_l3_ethtool_ops; 2449 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 2450 NETIF_F_HW_VLAN_CTAG_RX | 2451 NETIF_F_HW_VLAN_CTAG_FILTER; 2452 2453 netif_keep_dst(card->dev); 2454 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) 2455 netif_set_gso_max_size(card->dev, 2456 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1)); 2457 2458 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 2459 rc = register_netdev(card->dev); 2460 out: 2461 if (rc) 2462 card->dev->netdev_ops = NULL; 2463 return rc; 2464 } 2465 2466 static const struct device_type qeth_l3_devtype = { 2467 .name = "qeth_layer3", 2468 .groups = qeth_l3_attr_groups, 2469 }; 2470 2471 static int qeth_l3_probe_device(struct ccwgroup_device *gdev) 2472 { 2473 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2474 int rc; 2475 2476 if (gdev->dev.type == &qeth_generic_devtype) { 2477 rc = qeth_l3_create_device_attributes(&gdev->dev); 2478 if (rc) 2479 return rc; 2480 } 2481 hash_init(card->ip_htable); 2482 hash_init(card->ip_mc_htable); 2483 card->info.hwtrap = 0; 2484 return 0; 2485 } 2486 2487 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) 2488 { 2489 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 2490 2491 if (cgdev->dev.type == &qeth_generic_devtype) 2492 qeth_l3_remove_device_attributes(&cgdev->dev); 2493 2494 qeth_set_allowed_threads(card, 0, 1); 2495 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 2496 2497 if (cgdev->state == CCWGROUP_ONLINE) 2498 qeth_l3_set_offline(cgdev); 2499 2500 unregister_netdev(card->dev); 2501 qeth_l3_clear_ip_htable(card, 0); 2502 qeth_l3_clear_ipato_list(card); 2503 } 2504 2505 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) 2506 { 2507 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2508 int rc = 0; 2509 enum qeth_card_states recover_flag; 2510 2511 mutex_lock(&card->discipline_mutex); 2512 mutex_lock(&card->conf_mutex); 2513 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 2514 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 2515 2516 recover_flag = card->state; 2517 rc = qeth_core_hardsetup_card(card); 2518 if (rc) { 2519 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 2520 rc = -ENODEV; 2521 goto out_remove; 2522 } 2523 2524 rc = qeth_l3_setup_netdev(card); 2525 if (rc) 2526 goto out_remove; 2527 2528 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 2529 if (card->info.hwtrap && 2530 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 2531 card->info.hwtrap = 0; 2532 } else 2533 card->info.hwtrap = 0; 2534 2535 card->state = CARD_STATE_HARDSETUP; 2536 qeth_print_status_message(card); 2537 2538 /* softsetup */ 2539 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 2540 2541 rc = qeth_l3_setadapter_parms(card); 2542 if (rc) 2543 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 2544 if (!card->options.sniffer) { 2545 rc = qeth_l3_start_ipassists(card); 2546 if (rc) { 2547 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2548 goto out_remove; 2549 } 2550 rc = qeth_l3_setrouting_v4(card); 2551 if (rc) 2552 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc); 2553 rc = qeth_l3_setrouting_v6(card); 2554 if (rc) 2555 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc); 2556 } 2557 netif_tx_disable(card->dev); 2558 2559 rc = qeth_init_qdio_queues(card); 2560 if (rc) { 2561 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2562 rc = -ENODEV; 2563 goto out_remove; 2564 } 2565 card->state = CARD_STATE_SOFTSETUP; 2566 2567 qeth_set_allowed_threads(card, 0xffffffff, 0); 2568 qeth_l3_recover_ip(card); 2569 2570 qeth_enable_hw_features(card->dev); 2571 if (recover_flag == CARD_STATE_RECOVER) { 2572 rtnl_lock(); 2573 if (recovery_mode) { 2574 __qeth_l3_open(card->dev); 2575 qeth_l3_set_rx_mode(card->dev); 2576 } else { 2577 dev_open(card->dev); 2578 } 2579 rtnl_unlock(); 2580 } 2581 qeth_trace_features(card); 2582 /* let user_space know that device is online */ 2583 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 2584 mutex_unlock(&card->conf_mutex); 2585 mutex_unlock(&card->discipline_mutex); 2586 return 0; 2587 out_remove: 2588 qeth_l3_stop_card(card, 0); 2589 ccw_device_set_offline(CARD_DDEV(card)); 2590 ccw_device_set_offline(CARD_WDEV(card)); 2591 ccw_device_set_offline(CARD_RDEV(card)); 2592 qdio_free(CARD_DDEV(card)); 2593 if (recover_flag == CARD_STATE_RECOVER) 2594 card->state = CARD_STATE_RECOVER; 2595 else 2596 card->state = CARD_STATE_DOWN; 2597 mutex_unlock(&card->conf_mutex); 2598 mutex_unlock(&card->discipline_mutex); 2599 return rc; 2600 } 2601 2602 static int qeth_l3_set_online(struct ccwgroup_device *gdev) 2603 { 2604 return __qeth_l3_set_online(gdev, 0); 2605 } 2606 2607 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev, 2608 int recovery_mode) 2609 { 2610 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 2611 int rc = 0, rc2 = 0, rc3 = 0; 2612 enum qeth_card_states recover_flag; 2613 2614 mutex_lock(&card->discipline_mutex); 2615 mutex_lock(&card->conf_mutex); 2616 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 2617 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 2618 2619 netif_carrier_off(card->dev); 2620 recover_flag = card->state; 2621 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 2622 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 2623 card->info.hwtrap = 1; 2624 } 2625 qeth_l3_stop_card(card, recovery_mode); 2626 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) { 2627 rtnl_lock(); 2628 call_netdevice_notifiers(NETDEV_REBOOT, card->dev); 2629 rtnl_unlock(); 2630 } 2631 rc = ccw_device_set_offline(CARD_DDEV(card)); 2632 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 2633 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 2634 if (!rc) 2635 rc = (rc2) ? rc2 : rc3; 2636 if (rc) 2637 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2638 qdio_free(CARD_DDEV(card)); 2639 if (recover_flag == CARD_STATE_UP) 2640 card->state = CARD_STATE_RECOVER; 2641 /* let user_space know that device is offline */ 2642 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 2643 mutex_unlock(&card->conf_mutex); 2644 mutex_unlock(&card->discipline_mutex); 2645 return 0; 2646 } 2647 2648 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev) 2649 { 2650 return __qeth_l3_set_offline(cgdev, 0); 2651 } 2652 2653 static int qeth_l3_recover(void *ptr) 2654 { 2655 struct qeth_card *card; 2656 int rc = 0; 2657 2658 card = (struct qeth_card *) ptr; 2659 QETH_CARD_TEXT(card, 2, "recover1"); 2660 QETH_CARD_HEX(card, 2, &card, sizeof(void *)); 2661 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 2662 return 0; 2663 QETH_CARD_TEXT(card, 2, "recover2"); 2664 dev_warn(&card->gdev->dev, 2665 "A recovery process has been started for the device\n"); 2666 qeth_set_recovery_task(card); 2667 __qeth_l3_set_offline(card->gdev, 1); 2668 rc = __qeth_l3_set_online(card->gdev, 1); 2669 if (!rc) 2670 dev_info(&card->gdev->dev, 2671 "Device successfully recovered!\n"); 2672 else { 2673 qeth_close_dev(card); 2674 dev_warn(&card->gdev->dev, "The qeth device driver " 2675 "failed to recover an error on the device\n"); 2676 } 2677 qeth_clear_recovery_task(card); 2678 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 2679 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 2680 return 0; 2681 } 2682 2683 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev) 2684 { 2685 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2686 2687 netif_device_detach(card->dev); 2688 qeth_set_allowed_threads(card, 0, 1); 2689 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 2690 if (gdev->state == CCWGROUP_OFFLINE) 2691 return 0; 2692 if (card->state == CARD_STATE_UP) { 2693 if (card->info.hwtrap) 2694 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 2695 __qeth_l3_set_offline(card->gdev, 1); 2696 } else 2697 __qeth_l3_set_offline(card->gdev, 0); 2698 return 0; 2699 } 2700 2701 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev) 2702 { 2703 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2704 int rc = 0; 2705 2706 if (card->state == CARD_STATE_RECOVER) { 2707 rc = __qeth_l3_set_online(card->gdev, 1); 2708 if (rc) { 2709 rtnl_lock(); 2710 dev_close(card->dev); 2711 rtnl_unlock(); 2712 } 2713 } else 2714 rc = __qeth_l3_set_online(card->gdev, 0); 2715 2716 qeth_set_allowed_threads(card, 0xffffffff, 0); 2717 netif_device_attach(card->dev); 2718 if (rc) 2719 dev_warn(&card->gdev->dev, "The qeth device driver " 2720 "failed to recover an error on the device\n"); 2721 return rc; 2722 } 2723 2724 /* Returns zero if the command is successfully "consumed" */ 2725 static int qeth_l3_control_event(struct qeth_card *card, 2726 struct qeth_ipa_cmd *cmd) 2727 { 2728 return 1; 2729 } 2730 2731 struct qeth_discipline qeth_l3_discipline = { 2732 .devtype = &qeth_l3_devtype, 2733 .process_rx_buffer = qeth_l3_process_inbound_buffer, 2734 .recover = qeth_l3_recover, 2735 .setup = qeth_l3_probe_device, 2736 .remove = qeth_l3_remove_device, 2737 .set_online = qeth_l3_set_online, 2738 .set_offline = qeth_l3_set_offline, 2739 .freeze = qeth_l3_pm_suspend, 2740 .thaw = qeth_l3_pm_resume, 2741 .restore = qeth_l3_pm_resume, 2742 .do_ioctl = qeth_l3_do_ioctl, 2743 .control_event_handler = qeth_l3_control_event, 2744 }; 2745 EXPORT_SYMBOL_GPL(qeth_l3_discipline); 2746 2747 static int qeth_l3_handle_ip_event(struct qeth_card *card, 2748 struct qeth_ipaddr *addr, 2749 unsigned long event) 2750 { 2751 switch (event) { 2752 case NETDEV_UP: 2753 spin_lock_bh(&card->ip_lock); 2754 qeth_l3_add_ip(card, addr); 2755 spin_unlock_bh(&card->ip_lock); 2756 return NOTIFY_OK; 2757 case NETDEV_DOWN: 2758 spin_lock_bh(&card->ip_lock); 2759 qeth_l3_delete_ip(card, addr); 2760 spin_unlock_bh(&card->ip_lock); 2761 return NOTIFY_OK; 2762 default: 2763 return NOTIFY_DONE; 2764 } 2765 } 2766 2767 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) 2768 { 2769 if (is_vlan_dev(dev)) 2770 dev = vlan_dev_real_dev(dev); 2771 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops || 2772 dev->netdev_ops == &qeth_l3_netdev_ops) 2773 return (struct qeth_card *) dev->ml_priv; 2774 return NULL; 2775 } 2776 2777 static int qeth_l3_ip_event(struct notifier_block *this, 2778 unsigned long event, void *ptr) 2779 { 2780 2781 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 2782 struct net_device *dev = ifa->ifa_dev->dev; 2783 struct qeth_ipaddr addr; 2784 struct qeth_card *card; 2785 2786 if (dev_net(dev) != &init_net) 2787 return NOTIFY_DONE; 2788 2789 card = qeth_l3_get_card_from_dev(dev); 2790 if (!card) 2791 return NOTIFY_DONE; 2792 QETH_CARD_TEXT(card, 3, "ipevent"); 2793 2794 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); 2795 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address); 2796 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask); 2797 2798 return qeth_l3_handle_ip_event(card, &addr, event); 2799 } 2800 2801 static struct notifier_block qeth_l3_ip_notifier = { 2802 qeth_l3_ip_event, 2803 NULL, 2804 }; 2805 2806 static int qeth_l3_ip6_event(struct notifier_block *this, 2807 unsigned long event, void *ptr) 2808 { 2809 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 2810 struct net_device *dev = ifa->idev->dev; 2811 struct qeth_ipaddr addr; 2812 struct qeth_card *card; 2813 2814 card = qeth_l3_get_card_from_dev(dev); 2815 if (!card) 2816 return NOTIFY_DONE; 2817 QETH_CARD_TEXT(card, 3, "ip6event"); 2818 if (!qeth_is_supported(card, IPA_IPV6)) 2819 return NOTIFY_DONE; 2820 2821 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 2822 addr.u.a6.addr = ifa->addr; 2823 addr.u.a6.pfxlen = ifa->prefix_len; 2824 2825 return qeth_l3_handle_ip_event(card, &addr, event); 2826 } 2827 2828 static struct notifier_block qeth_l3_ip6_notifier = { 2829 qeth_l3_ip6_event, 2830 NULL, 2831 }; 2832 2833 static int qeth_l3_register_notifiers(void) 2834 { 2835 int rc; 2836 2837 QETH_DBF_TEXT(SETUP, 5, "regnotif"); 2838 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); 2839 if (rc) 2840 return rc; 2841 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); 2842 if (rc) { 2843 unregister_inetaddr_notifier(&qeth_l3_ip_notifier); 2844 return rc; 2845 } 2846 return 0; 2847 } 2848 2849 static void qeth_l3_unregister_notifiers(void) 2850 { 2851 QETH_DBF_TEXT(SETUP, 5, "unregnot"); 2852 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); 2853 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); 2854 } 2855 2856 static int __init qeth_l3_init(void) 2857 { 2858 pr_info("register layer 3 discipline\n"); 2859 return qeth_l3_register_notifiers(); 2860 } 2861 2862 static void __exit qeth_l3_exit(void) 2863 { 2864 qeth_l3_unregister_notifiers(); 2865 pr_info("unregister layer 3 discipline\n"); 2866 } 2867 2868 module_init(qeth_l3_init); 2869 module_exit(qeth_l3_exit); 2870 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2871 MODULE_DESCRIPTION("qeth layer 3 discipline"); 2872 MODULE_LICENSE("GPL"); 2873