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/inet.h> 23 #include <linux/ipv6.h> 24 #include <linux/inetdevice.h> 25 #include <linux/igmp.h> 26 #include <linux/slab.h> 27 #include <linux/if_ether.h> 28 #include <linux/if_vlan.h> 29 #include <linux/skbuff.h> 30 31 #include <net/ip.h> 32 #include <net/arp.h> 33 #include <net/route.h> 34 #include <net/ipv6.h> 35 #include <net/ip6_route.h> 36 #include <net/iucv/af_iucv.h> 37 #include <linux/hashtable.h> 38 39 #include "qeth_l3.h" 40 41 static int qeth_l3_register_addr_entry(struct qeth_card *, 42 struct qeth_ipaddr *); 43 static int qeth_l3_deregister_addr_entry(struct qeth_card *, 44 struct qeth_ipaddr *); 45 46 int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr, 47 char *buf) 48 { 49 if (proto == QETH_PROT_IPV4) 50 return scnprintf(buf, INET_ADDRSTRLEN, "%pI4", addr); 51 else 52 return scnprintf(buf, INET6_ADDRSTRLEN, "%pI6", addr); 53 } 54 55 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card, 56 struct qeth_ipaddr *query) 57 { 58 u32 key = qeth_l3_ipaddr_hash(query); 59 struct qeth_ipaddr *addr; 60 61 if (query->is_multicast) { 62 hash_for_each_possible(card->rx_mode_addrs, addr, hnode, key) 63 if (qeth_l3_addr_match_ip(addr, query)) 64 return addr; 65 } else { 66 hash_for_each_possible(card->ip_htable, addr, hnode, key) 67 if (qeth_l3_addr_match_ip(addr, query)) 68 return addr; 69 } 70 return NULL; 71 } 72 73 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len) 74 { 75 int i, j; 76 u8 octet; 77 78 for (i = 0; i < len; ++i) { 79 octet = addr[i]; 80 for (j = 7; j >= 0; --j) { 81 bits[i*8 + j] = octet & 1; 82 octet >>= 1; 83 } 84 } 85 } 86 87 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, 88 struct qeth_ipaddr *addr) 89 { 90 struct qeth_ipato_entry *ipatoe; 91 u8 addr_bits[128] = {0, }; 92 u8 ipatoe_bits[128] = {0, }; 93 int rc = 0; 94 95 if (!card->ipato.enabled) 96 return false; 97 if (addr->type != QETH_IP_TYPE_NORMAL) 98 return false; 99 100 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits, 101 (addr->proto == QETH_PROT_IPV4) ? 4 : 16); 102 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 103 if (addr->proto != ipatoe->proto) 104 continue; 105 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits, 106 (ipatoe->proto == QETH_PROT_IPV4) ? 107 4 : 16); 108 rc = !memcmp(addr_bits, ipatoe_bits, ipatoe->mask_bits); 109 if (rc) 110 break; 111 } 112 /* invert? */ 113 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4) 114 rc = !rc; 115 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6) 116 rc = !rc; 117 118 return rc; 119 } 120 121 static int qeth_l3_delete_ip(struct qeth_card *card, 122 struct qeth_ipaddr *tmp_addr) 123 { 124 int rc = 0; 125 struct qeth_ipaddr *addr; 126 127 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 128 QETH_CARD_TEXT(card, 2, "delrxip"); 129 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 130 QETH_CARD_TEXT(card, 2, "delvipa"); 131 else 132 QETH_CARD_TEXT(card, 2, "delip"); 133 134 if (tmp_addr->proto == QETH_PROT_IPV4) 135 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 136 else { 137 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 138 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 139 } 140 141 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 142 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr)) 143 return -ENOENT; 144 145 addr->ref_counter--; 146 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0) 147 return rc; 148 149 if (qeth_card_hw_is_reachable(card)) 150 rc = qeth_l3_deregister_addr_entry(card, addr); 151 152 hash_del(&addr->hnode); 153 kfree(addr); 154 155 return rc; 156 } 157 158 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) 159 { 160 int rc = 0; 161 struct qeth_ipaddr *addr; 162 char buf[INET6_ADDRSTRLEN]; 163 164 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 165 QETH_CARD_TEXT(card, 2, "addrxip"); 166 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 167 QETH_CARD_TEXT(card, 2, "addvipa"); 168 else 169 QETH_CARD_TEXT(card, 2, "addip"); 170 171 if (tmp_addr->proto == QETH_PROT_IPV4) 172 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 173 else { 174 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 175 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 176 } 177 178 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 179 if (addr) { 180 if (tmp_addr->type != QETH_IP_TYPE_NORMAL) 181 return -EADDRINUSE; 182 if (qeth_l3_addr_match_all(addr, tmp_addr)) { 183 addr->ref_counter++; 184 return 0; 185 } 186 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u, 187 buf); 188 dev_warn(&card->gdev->dev, 189 "Registering IP address %s failed\n", buf); 190 return -EADDRINUSE; 191 } else { 192 addr = kmemdup(tmp_addr, sizeof(*tmp_addr), GFP_KERNEL); 193 if (!addr) 194 return -ENOMEM; 195 196 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) { 197 QETH_CARD_TEXT(card, 2, "tkovaddr"); 198 addr->ipato = 1; 199 } 200 hash_add(card->ip_htable, &addr->hnode, 201 qeth_l3_ipaddr_hash(addr)); 202 203 if (!qeth_card_hw_is_reachable(card)) { 204 addr->disp_flag = QETH_DISP_ADDR_ADD; 205 return 0; 206 } 207 208 rc = qeth_l3_register_addr_entry(card, addr); 209 210 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) { 211 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 212 } else { 213 hash_del(&addr->hnode); 214 kfree(addr); 215 } 216 } 217 return rc; 218 } 219 220 static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr, 221 bool add) 222 { 223 int rc; 224 225 mutex_lock(&card->ip_lock); 226 rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr); 227 mutex_unlock(&card->ip_lock); 228 229 return rc; 230 } 231 232 static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card) 233 { 234 struct qeth_ipaddr *addr; 235 struct hlist_node *tmp; 236 int i; 237 238 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) { 239 hash_del(&addr->hnode); 240 kfree(addr); 241 } 242 } 243 244 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) 245 { 246 struct qeth_ipaddr *addr; 247 struct hlist_node *tmp; 248 int i; 249 250 QETH_CARD_TEXT(card, 4, "clearip"); 251 252 mutex_lock(&card->ip_lock); 253 254 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 255 if (!recover) { 256 hash_del(&addr->hnode); 257 kfree(addr); 258 continue; 259 } 260 addr->disp_flag = QETH_DISP_ADDR_ADD; 261 } 262 263 mutex_unlock(&card->ip_lock); 264 } 265 266 static void qeth_l3_recover_ip(struct qeth_card *card) 267 { 268 struct qeth_ipaddr *addr; 269 struct hlist_node *tmp; 270 int i; 271 int rc; 272 273 QETH_CARD_TEXT(card, 4, "recovrip"); 274 275 mutex_lock(&card->ip_lock); 276 277 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 278 if (addr->disp_flag == QETH_DISP_ADDR_ADD) { 279 rc = qeth_l3_register_addr_entry(card, addr); 280 281 if (!rc) { 282 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 283 } else { 284 hash_del(&addr->hnode); 285 kfree(addr); 286 } 287 } 288 } 289 290 mutex_unlock(&card->ip_lock); 291 } 292 293 static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply, 294 unsigned long data) 295 { 296 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 297 298 switch (cmd->hdr.return_code) { 299 case IPA_RC_SUCCESS: 300 return 0; 301 case IPA_RC_DUPLICATE_IP_ADDRESS: 302 return -EADDRINUSE; 303 case IPA_RC_MC_ADDR_NOT_FOUND: 304 return -ENOENT; 305 case IPA_RC_LAN_OFFLINE: 306 return -ENETDOWN; 307 default: 308 return -EIO; 309 } 310 } 311 312 static int qeth_l3_send_setdelmc(struct qeth_card *card, 313 struct qeth_ipaddr *addr, 314 enum qeth_ipa_cmds ipacmd) 315 { 316 struct qeth_cmd_buffer *iob; 317 struct qeth_ipa_cmd *cmd; 318 319 QETH_CARD_TEXT(card, 4, "setdelmc"); 320 321 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto, 322 IPA_DATA_SIZEOF(setdelipm)); 323 if (!iob) 324 return -ENOMEM; 325 cmd = __ipa_cmd(iob); 326 if (addr->proto == QETH_PROT_IPV6) { 327 cmd->data.setdelipm.ip = addr->u.a6.addr; 328 ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac); 329 } else { 330 cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr; 331 ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac); 332 } 333 334 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); 335 } 336 337 static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len) 338 { 339 unsigned int i = 0; 340 341 while (len && i < 4) { 342 int mask_len = min_t(int, len, 32); 343 344 prefix->s6_addr32[i] = inet_make_mask(mask_len); 345 len -= mask_len; 346 i++; 347 } 348 } 349 350 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set) 351 { 352 switch (addr->type) { 353 case QETH_IP_TYPE_RXIP: 354 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 355 case QETH_IP_TYPE_VIPA: 356 return (set) ? QETH_IPA_SETIP_VIPA_FLAG : 357 QETH_IPA_DELIP_VIPA_FLAG; 358 default: 359 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 360 } 361 } 362 363 static int qeth_l3_send_setdelip(struct qeth_card *card, 364 struct qeth_ipaddr *addr, 365 enum qeth_ipa_cmds ipacmd) 366 { 367 struct qeth_cmd_buffer *iob; 368 struct qeth_ipa_cmd *cmd; 369 u32 flags; 370 371 QETH_CARD_TEXT(card, 4, "setdelip"); 372 373 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto, 374 IPA_DATA_SIZEOF(setdelip6)); 375 if (!iob) 376 return -ENOMEM; 377 cmd = __ipa_cmd(iob); 378 379 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP); 380 QETH_CARD_TEXT_(card, 4, "flags%02X", flags); 381 382 if (addr->proto == QETH_PROT_IPV6) { 383 cmd->data.setdelip6.addr = addr->u.a6.addr; 384 qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix, 385 addr->u.a6.pfxlen); 386 cmd->data.setdelip6.flags = flags; 387 } else { 388 cmd->data.setdelip4.addr = addr->u.a4.addr; 389 cmd->data.setdelip4.mask = addr->u.a4.mask; 390 cmd->data.setdelip4.flags = flags; 391 } 392 393 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); 394 } 395 396 static int qeth_l3_send_setrouting(struct qeth_card *card, 397 enum qeth_routing_types type, enum qeth_prot_versions prot) 398 { 399 int rc; 400 struct qeth_ipa_cmd *cmd; 401 struct qeth_cmd_buffer *iob; 402 403 QETH_CARD_TEXT(card, 4, "setroutg"); 404 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot, 405 IPA_DATA_SIZEOF(setrtg)); 406 if (!iob) 407 return -ENOMEM; 408 cmd = __ipa_cmd(iob); 409 cmd->data.setrtg.type = (type); 410 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 411 412 return rc; 413 } 414 415 static int qeth_l3_correct_routing_type(struct qeth_card *card, 416 enum qeth_routing_types *type, enum qeth_prot_versions prot) 417 { 418 if (IS_IQD(card)) { 419 switch (*type) { 420 case NO_ROUTER: 421 case PRIMARY_CONNECTOR: 422 case SECONDARY_CONNECTOR: 423 case MULTICAST_ROUTER: 424 return 0; 425 default: 426 goto out_inval; 427 } 428 } else { 429 switch (*type) { 430 case NO_ROUTER: 431 case PRIMARY_ROUTER: 432 case SECONDARY_ROUTER: 433 return 0; 434 case MULTICAST_ROUTER: 435 if (qeth_is_ipafunc_supported(card, prot, 436 IPA_OSA_MC_ROUTER)) 437 return 0; 438 goto out_inval; 439 default: 440 goto out_inval; 441 } 442 } 443 out_inval: 444 *type = NO_ROUTER; 445 return -EINVAL; 446 } 447 448 int qeth_l3_setrouting_v4(struct qeth_card *card) 449 { 450 int rc; 451 452 QETH_CARD_TEXT(card, 3, "setrtg4"); 453 454 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, 455 QETH_PROT_IPV4); 456 if (rc) 457 return rc; 458 459 rc = qeth_l3_send_setrouting(card, card->options.route4.type, 460 QETH_PROT_IPV4); 461 if (rc) { 462 card->options.route4.type = NO_ROUTER; 463 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 464 rc, CARD_DEVID(card)); 465 } 466 return rc; 467 } 468 469 int qeth_l3_setrouting_v6(struct qeth_card *card) 470 { 471 int rc = 0; 472 473 QETH_CARD_TEXT(card, 3, "setrtg6"); 474 475 if (!qeth_is_supported(card, IPA_IPV6)) 476 return 0; 477 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type, 478 QETH_PROT_IPV6); 479 if (rc) 480 return rc; 481 482 rc = qeth_l3_send_setrouting(card, card->options.route6.type, 483 QETH_PROT_IPV6); 484 if (rc) { 485 card->options.route6.type = NO_ROUTER; 486 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 487 rc, CARD_DEVID(card)); 488 } 489 return rc; 490 } 491 492 /* 493 * IP address takeover related functions 494 */ 495 496 /* 497 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs. 498 * 499 * Caller must hold ip_lock. 500 */ 501 void qeth_l3_update_ipato(struct qeth_card *card) 502 { 503 struct qeth_ipaddr *addr; 504 unsigned int i; 505 506 hash_for_each(card->ip_htable, i, addr, hnode) { 507 if (addr->type != QETH_IP_TYPE_NORMAL) 508 continue; 509 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr); 510 } 511 } 512 513 static void qeth_l3_clear_ipato_list(struct qeth_card *card) 514 { 515 struct qeth_ipato_entry *ipatoe, *tmp; 516 517 mutex_lock(&card->ip_lock); 518 519 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 520 list_del(&ipatoe->entry); 521 kfree(ipatoe); 522 } 523 524 qeth_l3_update_ipato(card); 525 mutex_unlock(&card->ip_lock); 526 } 527 528 int qeth_l3_add_ipato_entry(struct qeth_card *card, 529 struct qeth_ipato_entry *new) 530 { 531 struct qeth_ipato_entry *ipatoe; 532 int rc = 0; 533 534 QETH_CARD_TEXT(card, 2, "addipato"); 535 536 mutex_lock(&card->ip_lock); 537 538 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 539 if (ipatoe->proto != new->proto) 540 continue; 541 if (!memcmp(ipatoe->addr, new->addr, 542 (ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16) && 543 (ipatoe->mask_bits == new->mask_bits)) { 544 rc = -EEXIST; 545 break; 546 } 547 } 548 549 if (!rc) { 550 list_add_tail(&new->entry, &card->ipato.entries); 551 qeth_l3_update_ipato(card); 552 } 553 554 mutex_unlock(&card->ip_lock); 555 556 return rc; 557 } 558 559 int qeth_l3_del_ipato_entry(struct qeth_card *card, 560 enum qeth_prot_versions proto, u8 *addr, 561 unsigned int mask_bits) 562 { 563 struct qeth_ipato_entry *ipatoe, *tmp; 564 int rc = -ENOENT; 565 566 QETH_CARD_TEXT(card, 2, "delipato"); 567 568 mutex_lock(&card->ip_lock); 569 570 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 571 if (ipatoe->proto != proto) 572 continue; 573 if (!memcmp(ipatoe->addr, addr, 574 (proto == QETH_PROT_IPV4) ? 4 : 16) && 575 (ipatoe->mask_bits == mask_bits)) { 576 list_del(&ipatoe->entry); 577 qeth_l3_update_ipato(card); 578 kfree(ipatoe); 579 rc = 0; 580 } 581 } 582 583 mutex_unlock(&card->ip_lock); 584 585 return rc; 586 } 587 588 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip, 589 enum qeth_ip_types type, 590 enum qeth_prot_versions proto) 591 { 592 struct qeth_ipaddr addr; 593 594 qeth_l3_init_ipaddr(&addr, type, proto); 595 if (proto == QETH_PROT_IPV4) 596 memcpy(&addr.u.a4.addr, ip, 4); 597 else 598 memcpy(&addr.u.a6.addr, ip, 16); 599 600 return qeth_l3_modify_ip(card, &addr, add); 601 } 602 603 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add) 604 { 605 struct qeth_ipaddr addr; 606 unsigned int i; 607 608 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 609 addr.u.a6.addr.s6_addr[0] = 0xfe; 610 addr.u.a6.addr.s6_addr[1] = 0x80; 611 for (i = 0; i < 8; i++) 612 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i]; 613 614 return qeth_l3_modify_ip(card, &addr, add); 615 } 616 617 static int qeth_l3_register_addr_entry(struct qeth_card *card, 618 struct qeth_ipaddr *addr) 619 { 620 char buf[50]; 621 int rc = 0; 622 int cnt = 3; 623 624 if (card->options.sniffer) 625 return 0; 626 627 if (addr->proto == QETH_PROT_IPV4) { 628 QETH_CARD_TEXT(card, 2, "setaddr4"); 629 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 630 } else if (addr->proto == QETH_PROT_IPV6) { 631 QETH_CARD_TEXT(card, 2, "setaddr6"); 632 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 633 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 634 } else { 635 QETH_CARD_TEXT(card, 2, "setaddr?"); 636 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 637 } 638 do { 639 if (addr->is_multicast) 640 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); 641 else 642 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP); 643 if (rc) 644 QETH_CARD_TEXT(card, 2, "failed"); 645 } while ((--cnt > 0) && rc); 646 if (rc) { 647 QETH_CARD_TEXT(card, 2, "FAILED"); 648 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); 649 dev_warn(&card->gdev->dev, 650 "Registering IP address %s failed\n", buf); 651 } 652 return rc; 653 } 654 655 static int qeth_l3_deregister_addr_entry(struct qeth_card *card, 656 struct qeth_ipaddr *addr) 657 { 658 int rc = 0; 659 660 if (card->options.sniffer) 661 return 0; 662 663 if (addr->proto == QETH_PROT_IPV4) { 664 QETH_CARD_TEXT(card, 2, "deladdr4"); 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, "deladdr6"); 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, "deladdr?"); 672 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 673 } 674 if (addr->is_multicast) 675 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); 676 else 677 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP); 678 if (rc) 679 QETH_CARD_TEXT(card, 2, "failed"); 680 681 return rc; 682 } 683 684 static int qeth_l3_setadapter_parms(struct qeth_card *card) 685 { 686 int rc = 0; 687 688 QETH_CARD_TEXT(card, 2, "setadprm"); 689 690 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { 691 rc = qeth_setadpparms_change_macaddr(card); 692 if (rc) 693 dev_warn(&card->gdev->dev, "Reading the adapter MAC" 694 " address failed\n"); 695 } 696 697 return rc; 698 } 699 700 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) 701 { 702 int rc; 703 704 QETH_CARD_TEXT(card, 3, "ipaarp"); 705 706 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 707 dev_info(&card->gdev->dev, 708 "ARP processing not supported on %s!\n", 709 netdev_name(card->dev)); 710 return 0; 711 } 712 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 713 IPA_CMD_ASS_START, NULL); 714 if (rc) { 715 dev_warn(&card->gdev->dev, 716 "Starting ARP processing support for %s failed\n", 717 netdev_name(card->dev)); 718 } 719 return rc; 720 } 721 722 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 723 { 724 int rc; 725 726 QETH_CARD_TEXT(card, 3, "stsrcmac"); 727 728 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { 729 dev_info(&card->gdev->dev, 730 "Inbound source MAC-address not supported on %s\n", 731 netdev_name(card->dev)); 732 return -EOPNOTSUPP; 733 } 734 735 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC, 736 IPA_CMD_ASS_START, NULL); 737 if (rc) 738 dev_warn(&card->gdev->dev, 739 "Starting source MAC-address support for %s failed\n", 740 netdev_name(card->dev)); 741 return rc; 742 } 743 744 static int qeth_l3_start_ipa_vlan(struct qeth_card *card) 745 { 746 int rc = 0; 747 748 QETH_CARD_TEXT(card, 3, "strtvlan"); 749 750 if (!qeth_is_supported(card, IPA_FULL_VLAN)) { 751 dev_info(&card->gdev->dev, 752 "VLAN not supported on %s\n", netdev_name(card->dev)); 753 return -EOPNOTSUPP; 754 } 755 756 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO, 757 IPA_CMD_ASS_START, NULL); 758 if (rc) { 759 dev_warn(&card->gdev->dev, 760 "Starting VLAN support for %s failed\n", 761 netdev_name(card->dev)); 762 } else { 763 dev_info(&card->gdev->dev, "VLAN enabled\n"); 764 } 765 return rc; 766 } 767 768 static int qeth_l3_start_ipa_multicast(struct qeth_card *card) 769 { 770 int rc; 771 772 QETH_CARD_TEXT(card, 3, "stmcast"); 773 774 if (!qeth_is_supported(card, IPA_MULTICASTING)) { 775 dev_info(&card->gdev->dev, 776 "Multicast not supported on %s\n", 777 netdev_name(card->dev)); 778 return -EOPNOTSUPP; 779 } 780 781 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING, 782 IPA_CMD_ASS_START, NULL); 783 if (rc) { 784 dev_warn(&card->gdev->dev, 785 "Starting multicast support for %s failed\n", 786 netdev_name(card->dev)); 787 } else { 788 dev_info(&card->gdev->dev, "Multicast enabled\n"); 789 card->dev->flags |= IFF_MULTICAST; 790 } 791 return rc; 792 } 793 794 static int qeth_l3_softsetup_ipv6(struct qeth_card *card) 795 { 796 u32 ipv6_data = 3; 797 int rc; 798 799 QETH_CARD_TEXT(card, 3, "softipv6"); 800 801 if (IS_IQD(card)) 802 goto out; 803 804 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START, 805 &ipv6_data); 806 if (rc) { 807 dev_err(&card->gdev->dev, 808 "Activating IPv6 support for %s failed\n", 809 netdev_name(card->dev)); 810 return rc; 811 } 812 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START, 813 NULL); 814 if (rc) { 815 dev_err(&card->gdev->dev, 816 "Activating IPv6 support for %s failed\n", 817 netdev_name(card->dev)); 818 return rc; 819 } 820 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU, 821 IPA_CMD_ASS_START, NULL); 822 if (rc) { 823 dev_warn(&card->gdev->dev, 824 "Enabling the passthrough mode for %s failed\n", 825 netdev_name(card->dev)); 826 return rc; 827 } 828 out: 829 dev_info(&card->gdev->dev, "IPV6 enabled\n"); 830 return 0; 831 } 832 833 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) 834 { 835 QETH_CARD_TEXT(card, 3, "strtipv6"); 836 837 if (!qeth_is_supported(card, IPA_IPV6)) { 838 dev_info(&card->gdev->dev, 839 "IPv6 not supported on %s\n", netdev_name(card->dev)); 840 return 0; 841 } 842 return qeth_l3_softsetup_ipv6(card); 843 } 844 845 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) 846 { 847 u32 filter_data = 1; 848 int rc; 849 850 QETH_CARD_TEXT(card, 3, "stbrdcst"); 851 card->info.broadcast_capable = 0; 852 if (!qeth_is_supported(card, IPA_FILTERING)) { 853 dev_info(&card->gdev->dev, 854 "Broadcast not supported on %s\n", 855 netdev_name(card->dev)); 856 rc = -EOPNOTSUPP; 857 goto out; 858 } 859 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 860 IPA_CMD_ASS_START, NULL); 861 if (rc) { 862 dev_warn(&card->gdev->dev, 863 "Enabling broadcast filtering for %s failed\n", 864 netdev_name(card->dev)); 865 goto out; 866 } 867 868 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 869 IPA_CMD_ASS_CONFIGURE, &filter_data); 870 if (rc) { 871 dev_warn(&card->gdev->dev, 872 "Setting up broadcast filtering for %s failed\n", 873 netdev_name(card->dev)); 874 goto out; 875 } 876 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; 877 dev_info(&card->gdev->dev, "Broadcast enabled\n"); 878 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 879 IPA_CMD_ASS_ENABLE, &filter_data); 880 if (rc) { 881 dev_warn(&card->gdev->dev, 882 "Setting up broadcast echo filtering for %s failed\n", 883 netdev_name(card->dev)); 884 goto out; 885 } 886 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; 887 out: 888 if (card->info.broadcast_capable) 889 card->dev->flags |= IFF_BROADCAST; 890 else 891 card->dev->flags &= ~IFF_BROADCAST; 892 return rc; 893 } 894 895 static void qeth_l3_start_ipassists(struct qeth_card *card) 896 { 897 QETH_CARD_TEXT(card, 3, "strtipas"); 898 899 qeth_l3_start_ipa_arp_processing(card); /* go on*/ 900 qeth_l3_start_ipa_source_mac(card); /* go on*/ 901 qeth_l3_start_ipa_vlan(card); /* go on*/ 902 qeth_l3_start_ipa_multicast(card); /* go on*/ 903 qeth_l3_start_ipa_ipv6(card); /* go on*/ 904 qeth_l3_start_ipa_broadcast(card); /* go on*/ 905 } 906 907 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, 908 struct qeth_reply *reply, unsigned long data) 909 { 910 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 911 912 if (cmd->hdr.return_code) 913 return -EIO; 914 if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr)) 915 return -EADDRNOTAVAIL; 916 917 eth_hw_addr_set(card->dev, cmd->data.create_destroy_addr.mac_addr); 918 return 0; 919 } 920 921 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) 922 { 923 int rc = 0; 924 struct qeth_cmd_buffer *iob; 925 926 QETH_CARD_TEXT(card, 2, "hsrmac"); 927 928 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6, 929 IPA_DATA_SIZEOF(create_destroy_addr)); 930 if (!iob) 931 return -ENOMEM; 932 933 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, 934 NULL); 935 return rc; 936 } 937 938 static int qeth_l3_get_unique_id_cb(struct qeth_card *card, 939 struct qeth_reply *reply, unsigned long data) 940 { 941 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 942 u16 *uid = reply->param; 943 944 if (cmd->hdr.return_code == 0) { 945 *uid = cmd->data.create_destroy_addr.uid; 946 return 0; 947 } 948 949 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n"); 950 return -EIO; 951 } 952 953 static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid) 954 { 955 struct qeth_cmd_buffer *iob; 956 957 QETH_CARD_TEXT(card, 2, "guniqeid"); 958 959 if (!qeth_is_supported(card, IPA_IPV6)) 960 goto out; 961 962 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6, 963 IPA_DATA_SIZEOF(create_destroy_addr)); 964 if (!iob) 965 goto out; 966 967 __ipa_cmd(iob)->data.create_destroy_addr.uid = uid; 968 qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, &uid); 969 970 out: 971 return uid; 972 } 973 974 static int 975 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, 976 unsigned long data) 977 { 978 struct qeth_ipa_cmd *cmd; 979 __u16 rc; 980 981 QETH_CARD_TEXT(card, 2, "diastrcb"); 982 983 cmd = (struct qeth_ipa_cmd *)data; 984 rc = cmd->hdr.return_code; 985 if (rc) 986 QETH_CARD_TEXT_(card, 2, "dxter%x", rc); 987 switch (cmd->data.diagass.action) { 988 case QETH_DIAGS_CMD_TRACE_QUERY: 989 break; 990 case QETH_DIAGS_CMD_TRACE_DISABLE: 991 switch (rc) { 992 case 0: 993 case IPA_RC_INVALID_SUBCMD: 994 card->info.promisc_mode = SET_PROMISC_MODE_OFF; 995 dev_info(&card->gdev->dev, "The HiperSockets network " 996 "traffic analyzer is deactivated\n"); 997 break; 998 default: 999 break; 1000 } 1001 break; 1002 case QETH_DIAGS_CMD_TRACE_ENABLE: 1003 switch (rc) { 1004 case 0: 1005 card->info.promisc_mode = SET_PROMISC_MODE_ON; 1006 dev_info(&card->gdev->dev, "The HiperSockets network " 1007 "traffic analyzer is activated\n"); 1008 break; 1009 case IPA_RC_HARDWARE_AUTH_ERROR: 1010 dev_warn(&card->gdev->dev, "The device is not " 1011 "authorized to run as a HiperSockets network " 1012 "traffic analyzer\n"); 1013 break; 1014 case IPA_RC_TRACE_ALREADY_ACTIVE: 1015 dev_warn(&card->gdev->dev, "A HiperSockets " 1016 "network traffic analyzer is already " 1017 "active in the HiperSockets LAN\n"); 1018 break; 1019 default: 1020 break; 1021 } 1022 break; 1023 default: 1024 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n", 1025 cmd->data.diagass.action, CARD_DEVID(card)); 1026 } 1027 1028 return rc ? -EIO : 0; 1029 } 1030 1031 static int 1032 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) 1033 { 1034 struct qeth_cmd_buffer *iob; 1035 struct qeth_ipa_cmd *cmd; 1036 1037 QETH_CARD_TEXT(card, 2, "diagtrac"); 1038 1039 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0); 1040 if (!iob) 1041 return -ENOMEM; 1042 cmd = __ipa_cmd(iob); 1043 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; 1044 cmd->data.diagass.action = diags_cmd; 1045 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL); 1046 } 1047 1048 static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg) 1049 { 1050 struct qeth_card *card = arg; 1051 struct inet6_dev *in6_dev; 1052 struct in_device *in4_dev; 1053 struct qeth_ipaddr *ipm; 1054 struct qeth_ipaddr tmp; 1055 struct ip_mc_list *im4; 1056 struct ifmcaddr6 *im6; 1057 1058 QETH_CARD_TEXT(card, 4, "addmc"); 1059 1060 if (!dev || !(dev->flags & IFF_UP)) 1061 goto out; 1062 1063 in4_dev = __in_dev_get_rtnl(dev); 1064 if (!in4_dev) 1065 goto walk_ipv6; 1066 1067 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); 1068 tmp.disp_flag = QETH_DISP_ADDR_ADD; 1069 tmp.is_multicast = 1; 1070 1071 for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL; 1072 im4 = rtnl_dereference(im4->next_rcu)) { 1073 tmp.u.a4.addr = im4->multiaddr; 1074 1075 ipm = qeth_l3_find_addr_by_ip(card, &tmp); 1076 if (ipm) { 1077 /* for mcast, by-IP match means full match */ 1078 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1079 continue; 1080 } 1081 1082 ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL); 1083 if (!ipm) 1084 continue; 1085 1086 hash_add(card->rx_mode_addrs, &ipm->hnode, 1087 qeth_l3_ipaddr_hash(ipm)); 1088 } 1089 1090 walk_ipv6: 1091 if (!qeth_is_supported(card, IPA_IPV6)) 1092 goto out; 1093 1094 in6_dev = __in6_dev_get(dev); 1095 if (!in6_dev) 1096 goto out; 1097 1098 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 1099 tmp.disp_flag = QETH_DISP_ADDR_ADD; 1100 tmp.is_multicast = 1; 1101 1102 for (im6 = rtnl_dereference(in6_dev->mc_list); 1103 im6; 1104 im6 = rtnl_dereference(im6->next)) { 1105 tmp.u.a6.addr = im6->mca_addr; 1106 1107 ipm = qeth_l3_find_addr_by_ip(card, &tmp); 1108 if (ipm) { 1109 /* for mcast, by-IP match means full match */ 1110 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1111 continue; 1112 } 1113 1114 ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC); 1115 if (!ipm) 1116 continue; 1117 1118 hash_add(card->rx_mode_addrs, &ipm->hnode, 1119 qeth_l3_ipaddr_hash(ipm)); 1120 1121 } 1122 1123 out: 1124 return 0; 1125 } 1126 1127 static void qeth_l3_set_promisc_mode(struct qeth_card *card) 1128 { 1129 bool enable = card->dev->flags & IFF_PROMISC; 1130 1131 if (card->info.promisc_mode == enable) 1132 return; 1133 1134 if (IS_VM_NIC(card)) { /* Guestlan trace */ 1135 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1136 qeth_setadp_promisc_mode(card, enable); 1137 } else if (card->options.sniffer && /* HiperSockets trace */ 1138 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 1139 if (enable) { 1140 QETH_CARD_TEXT(card, 3, "+promisc"); 1141 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE); 1142 } else { 1143 QETH_CARD_TEXT(card, 3, "-promisc"); 1144 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1145 } 1146 } 1147 } 1148 1149 static void qeth_l3_rx_mode_work(struct work_struct *work) 1150 { 1151 struct qeth_card *card = container_of(work, struct qeth_card, 1152 rx_mode_work); 1153 struct qeth_ipaddr *addr; 1154 struct hlist_node *tmp; 1155 int i, rc; 1156 1157 QETH_CARD_TEXT(card, 3, "setmulti"); 1158 1159 if (!card->options.sniffer) { 1160 rtnl_lock(); 1161 qeth_l3_add_mcast_rtnl(card->dev, 0, card); 1162 if (qeth_is_supported(card, IPA_FULL_VLAN)) 1163 vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card); 1164 rtnl_unlock(); 1165 1166 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) { 1167 switch (addr->disp_flag) { 1168 case QETH_DISP_ADDR_DELETE: 1169 rc = qeth_l3_deregister_addr_entry(card, addr); 1170 if (!rc || rc == -ENOENT) { 1171 hash_del(&addr->hnode); 1172 kfree(addr); 1173 } 1174 break; 1175 case QETH_DISP_ADDR_ADD: 1176 rc = qeth_l3_register_addr_entry(card, addr); 1177 if (rc && rc != -ENETDOWN) { 1178 hash_del(&addr->hnode); 1179 kfree(addr); 1180 break; 1181 } 1182 fallthrough; 1183 default: 1184 /* for next call to set_rx_mode(): */ 1185 addr->disp_flag = QETH_DISP_ADDR_DELETE; 1186 } 1187 } 1188 } 1189 1190 qeth_l3_set_promisc_mode(card); 1191 } 1192 1193 static int qeth_l3_arp_makerc(u16 rc) 1194 { 1195 switch (rc) { 1196 case IPA_RC_SUCCESS: 1197 return 0; 1198 case QETH_IPA_ARP_RC_NOTSUPP: 1199 case QETH_IPA_ARP_RC_Q_NOTSUPP: 1200 return -EOPNOTSUPP; 1201 case QETH_IPA_ARP_RC_OUT_OF_RANGE: 1202 return -EINVAL; 1203 case QETH_IPA_ARP_RC_Q_NO_DATA: 1204 return -ENOENT; 1205 default: 1206 return -EIO; 1207 } 1208 } 1209 1210 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply, 1211 unsigned long data) 1212 { 1213 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1214 1215 qeth_setassparms_cb(card, reply, data); 1216 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1217 } 1218 1219 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) 1220 { 1221 struct qeth_cmd_buffer *iob; 1222 int rc; 1223 1224 QETH_CARD_TEXT(card, 3, "arpstnoe"); 1225 1226 /* 1227 * currently GuestLAN only supports the ARP assist function 1228 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; 1229 * thus we say EOPNOTSUPP for this ARP function 1230 */ 1231 if (IS_VM_NIC(card)) 1232 return -EOPNOTSUPP; 1233 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1234 return -EOPNOTSUPP; 1235 } 1236 1237 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1238 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 1239 SETASS_DATA_SIZEOF(flags_32bit), 1240 QETH_PROT_IPV4); 1241 if (!iob) 1242 return -ENOMEM; 1243 1244 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries; 1245 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1246 if (rc) 1247 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n", 1248 CARD_DEVID(card), rc); 1249 return rc; 1250 } 1251 1252 static __u32 get_arp_entry_size(struct qeth_card *card, 1253 struct qeth_arp_query_data *qdata, 1254 struct qeth_arp_entrytype *type, __u8 strip_entries) 1255 { 1256 __u32 rc; 1257 __u8 is_hsi; 1258 1259 is_hsi = qdata->reply_bits == 5; 1260 if (type->ip == QETHARP_IP_ADDR_V4) { 1261 QETH_CARD_TEXT(card, 4, "arpev4"); 1262 if (strip_entries) { 1263 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : 1264 sizeof(struct qeth_arp_qi_entry7_short); 1265 } else { 1266 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : 1267 sizeof(struct qeth_arp_qi_entry7); 1268 } 1269 } else if (type->ip == QETHARP_IP_ADDR_V6) { 1270 QETH_CARD_TEXT(card, 4, "arpev6"); 1271 if (strip_entries) { 1272 rc = is_hsi ? 1273 sizeof(struct qeth_arp_qi_entry5_short_ipv6) : 1274 sizeof(struct qeth_arp_qi_entry7_short_ipv6); 1275 } else { 1276 rc = is_hsi ? 1277 sizeof(struct qeth_arp_qi_entry5_ipv6) : 1278 sizeof(struct qeth_arp_qi_entry7_ipv6); 1279 } 1280 } else { 1281 QETH_CARD_TEXT(card, 4, "arpinv"); 1282 rc = 0; 1283 } 1284 1285 return rc; 1286 } 1287 1288 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) 1289 { 1290 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || 1291 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); 1292 } 1293 1294 static int qeth_l3_arp_query_cb(struct qeth_card *card, 1295 struct qeth_reply *reply, unsigned long data) 1296 { 1297 struct qeth_ipa_cmd *cmd; 1298 struct qeth_arp_query_data *qdata; 1299 struct qeth_arp_query_info *qinfo; 1300 int e; 1301 int entrybytes_done; 1302 int stripped_bytes; 1303 __u8 do_strip_entries; 1304 1305 QETH_CARD_TEXT(card, 3, "arpquecb"); 1306 1307 qinfo = (struct qeth_arp_query_info *) reply->param; 1308 cmd = (struct qeth_ipa_cmd *) data; 1309 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version); 1310 if (cmd->hdr.return_code) { 1311 QETH_CARD_TEXT(card, 4, "arpcberr"); 1312 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1313 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1314 } 1315 if (cmd->data.setassparms.hdr.return_code) { 1316 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 1317 QETH_CARD_TEXT(card, 4, "setaperr"); 1318 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1319 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1320 } 1321 qdata = &cmd->data.setassparms.data.query_arp; 1322 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries); 1323 1324 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; 1325 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; 1326 entrybytes_done = 0; 1327 for (e = 0; e < qdata->no_entries; ++e) { 1328 char *cur_entry; 1329 __u32 esize; 1330 struct qeth_arp_entrytype *etype; 1331 1332 cur_entry = &qdata->data + entrybytes_done; 1333 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; 1334 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) { 1335 QETH_CARD_TEXT(card, 4, "pmis"); 1336 QETH_CARD_TEXT_(card, 4, "%i", etype->ip); 1337 break; 1338 } 1339 esize = get_arp_entry_size(card, qdata, etype, 1340 do_strip_entries); 1341 QETH_CARD_TEXT_(card, 5, "esz%i", esize); 1342 if (!esize) 1343 break; 1344 1345 if ((qinfo->udata_len - qinfo->udata_offset) < esize) { 1346 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC); 1347 memset(qinfo->udata, 0, 4); 1348 return -ENOSPC; 1349 } 1350 1351 memcpy(qinfo->udata + qinfo->udata_offset, 1352 &qdata->data + entrybytes_done + stripped_bytes, 1353 esize); 1354 entrybytes_done += esize + stripped_bytes; 1355 qinfo->udata_offset += esize; 1356 ++qinfo->no_entries; 1357 } 1358 /* check if all replies received ... */ 1359 if (cmd->data.setassparms.hdr.seq_no < 1360 cmd->data.setassparms.hdr.number_of_replies) 1361 return 1; 1362 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries); 1363 memcpy(qinfo->udata, &qinfo->no_entries, 4); 1364 /* keep STRIP_ENTRIES flag so the user program can distinguish 1365 * stripped entries from normal ones */ 1366 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) 1367 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; 1368 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); 1369 QETH_CARD_TEXT_(card, 4, "rc%i", 0); 1370 return 0; 1371 } 1372 1373 static int qeth_l3_query_arp_cache_info(struct qeth_card *card, 1374 enum qeth_prot_versions prot, 1375 struct qeth_arp_query_info *qinfo) 1376 { 1377 struct qeth_cmd_buffer *iob; 1378 struct qeth_ipa_cmd *cmd; 1379 int rc; 1380 1381 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); 1382 1383 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1384 IPA_CMD_ASS_ARP_QUERY_INFO, 1385 SETASS_DATA_SIZEOF(query_arp), prot); 1386 if (!iob) 1387 return -ENOMEM; 1388 cmd = __ipa_cmd(iob); 1389 cmd->data.setassparms.data.query_arp.request_bits = 0x000F; 1390 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo); 1391 if (rc) 1392 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n", 1393 CARD_DEVID(card), rc); 1394 return rc; 1395 } 1396 1397 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) 1398 { 1399 struct qeth_arp_query_info qinfo = {0, }; 1400 int rc; 1401 1402 QETH_CARD_TEXT(card, 3, "arpquery"); 1403 1404 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ 1405 IPA_ARP_PROCESSING)) { 1406 QETH_CARD_TEXT(card, 3, "arpqnsup"); 1407 rc = -EOPNOTSUPP; 1408 goto out; 1409 } 1410 /* get size of userspace buffer and mask_bits -> 6 bytes */ 1411 if (copy_from_user(&qinfo, udata, 6)) { 1412 rc = -EFAULT; 1413 goto out; 1414 } 1415 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 1416 if (!qinfo.udata) { 1417 rc = -ENOMEM; 1418 goto out; 1419 } 1420 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; 1421 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo); 1422 if (rc) { 1423 if (copy_to_user(udata, qinfo.udata, 4)) 1424 rc = -EFAULT; 1425 goto free_and_out; 1426 } 1427 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { 1428 /* fails in case of GuestLAN QDIO mode */ 1429 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo); 1430 } 1431 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) { 1432 QETH_CARD_TEXT(card, 4, "qactf"); 1433 rc = -EFAULT; 1434 goto free_and_out; 1435 } 1436 QETH_CARD_TEXT(card, 4, "qacts"); 1437 1438 free_and_out: 1439 kfree(qinfo.udata); 1440 out: 1441 return rc; 1442 } 1443 1444 static int qeth_l3_arp_modify_entry(struct qeth_card *card, 1445 struct qeth_arp_cache_entry *entry, 1446 enum qeth_arp_process_subcmds arp_cmd) 1447 { 1448 struct qeth_arp_cache_entry *cmd_entry; 1449 struct qeth_cmd_buffer *iob; 1450 int rc; 1451 1452 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY) 1453 QETH_CARD_TEXT(card, 3, "arpadd"); 1454 else 1455 QETH_CARD_TEXT(card, 3, "arpdel"); 1456 1457 /* 1458 * currently GuestLAN only supports the ARP assist function 1459 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; 1460 * thus we say EOPNOTSUPP for this ARP function 1461 */ 1462 if (IS_VM_NIC(card)) 1463 return -EOPNOTSUPP; 1464 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1465 return -EOPNOTSUPP; 1466 } 1467 1468 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd, 1469 SETASS_DATA_SIZEOF(arp_entry), 1470 QETH_PROT_IPV4); 1471 if (!iob) 1472 return -ENOMEM; 1473 1474 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry; 1475 ether_addr_copy(cmd_entry->macaddr, entry->macaddr); 1476 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4); 1477 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1478 if (rc) 1479 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n", 1480 arp_cmd, CARD_DEVID(card), rc); 1481 return rc; 1482 } 1483 1484 static int qeth_l3_arp_flush_cache(struct qeth_card *card) 1485 { 1486 struct qeth_cmd_buffer *iob; 1487 int rc; 1488 1489 QETH_CARD_TEXT(card, 3, "arpflush"); 1490 1491 /* 1492 * currently GuestLAN only supports the ARP assist function 1493 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; 1494 * thus we say EOPNOTSUPP for this ARP function 1495 */ 1496 if (IS_VM_NIC(card) || IS_IQD(card)) 1497 return -EOPNOTSUPP; 1498 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1499 return -EOPNOTSUPP; 1500 } 1501 1502 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1503 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0, 1504 QETH_PROT_IPV4); 1505 if (!iob) 1506 return -ENOMEM; 1507 1508 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1509 if (rc) 1510 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n", 1511 CARD_DEVID(card), rc); 1512 return rc; 1513 } 1514 1515 static int qeth_l3_ndo_siocdevprivate(struct net_device *dev, struct ifreq *rq, 1516 void __user *data, int cmd) 1517 { 1518 struct qeth_card *card = dev->ml_priv; 1519 struct qeth_arp_cache_entry arp_entry; 1520 enum qeth_arp_process_subcmds arp_cmd; 1521 int rc = 0; 1522 1523 switch (cmd) { 1524 case SIOC_QETH_ARP_SET_NO_ENTRIES: 1525 if (!capable(CAP_NET_ADMIN)) { 1526 rc = -EPERM; 1527 break; 1528 } 1529 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); 1530 break; 1531 case SIOC_QETH_ARP_QUERY_INFO: 1532 if (!capable(CAP_NET_ADMIN)) { 1533 rc = -EPERM; 1534 break; 1535 } 1536 rc = qeth_l3_arp_query(card, data); 1537 break; 1538 case SIOC_QETH_ARP_ADD_ENTRY: 1539 case SIOC_QETH_ARP_REMOVE_ENTRY: 1540 if (!capable(CAP_NET_ADMIN)) 1541 return -EPERM; 1542 if (copy_from_user(&arp_entry, data, sizeof(arp_entry))) 1543 return -EFAULT; 1544 1545 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ? 1546 IPA_CMD_ASS_ARP_ADD_ENTRY : 1547 IPA_CMD_ASS_ARP_REMOVE_ENTRY; 1548 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd); 1549 case SIOC_QETH_ARP_FLUSH_CACHE: 1550 if (!capable(CAP_NET_ADMIN)) { 1551 rc = -EPERM; 1552 break; 1553 } 1554 rc = qeth_l3_arp_flush_cache(card); 1555 break; 1556 default: 1557 rc = qeth_siocdevprivate(dev, rq, data, cmd); 1558 } 1559 return rc; 1560 } 1561 1562 static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst, 1563 __be16 proto) 1564 { 1565 struct neighbour *n = NULL; 1566 1567 if (dst) 1568 n = dst_neigh_lookup_skb(dst, skb); 1569 1570 if (n) { 1571 int cast_type = n->type; 1572 1573 neigh_release(n); 1574 if ((cast_type == RTN_BROADCAST) || 1575 (cast_type == RTN_MULTICAST) || 1576 (cast_type == RTN_ANYCAST)) 1577 return cast_type; 1578 return RTN_UNICAST; 1579 } 1580 1581 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */ 1582 switch (proto) { 1583 case htons(ETH_P_IP): 1584 if (ipv4_is_lbcast(ip_hdr(skb)->daddr)) 1585 return RTN_BROADCAST; 1586 return ipv4_is_multicast(ip_hdr(skb)->daddr) ? 1587 RTN_MULTICAST : RTN_UNICAST; 1588 case htons(ETH_P_IPV6): 1589 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ? 1590 RTN_MULTICAST : RTN_UNICAST; 1591 case htons(ETH_P_AF_IUCV): 1592 return RTN_UNICAST; 1593 default: 1594 /* OSA only: ... and MAC address */ 1595 return qeth_get_ether_cast_type(skb); 1596 } 1597 } 1598 1599 static int qeth_l3_get_cast_type(struct sk_buff *skb, __be16 proto) 1600 { 1601 struct dst_entry *dst; 1602 int cast_type; 1603 1604 rcu_read_lock(); 1605 dst = qeth_dst_check_rcu(skb, proto); 1606 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto); 1607 rcu_read_unlock(); 1608 1609 return cast_type; 1610 } 1611 1612 static u8 qeth_l3_cast_type_to_flag(int cast_type) 1613 { 1614 if (cast_type == RTN_MULTICAST) 1615 return QETH_CAST_MULTICAST; 1616 if (cast_type == RTN_ANYCAST) 1617 return QETH_CAST_ANYCAST; 1618 if (cast_type == RTN_BROADCAST) 1619 return QETH_CAST_BROADCAST; 1620 return QETH_CAST_UNICAST; 1621 } 1622 1623 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue, 1624 struct qeth_hdr *hdr, struct sk_buff *skb, 1625 __be16 proto, unsigned int data_len) 1626 { 1627 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3; 1628 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 1629 struct qeth_card *card = queue->card; 1630 struct dst_entry *dst; 1631 int cast_type; 1632 1633 hdr->hdr.l3.length = data_len; 1634 1635 if (skb_is_gso(skb)) { 1636 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO; 1637 } else { 1638 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 1639 1640 if (skb->ip_summed == CHECKSUM_PARTIAL) { 1641 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, proto); 1642 /* some HW requires combined L3+L4 csum offload: */ 1643 if (proto == htons(ETH_P_IP)) 1644 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ; 1645 } 1646 } 1647 1648 if (proto == htons(ETH_P_IP) || IS_IQD(card)) { 1649 /* NETIF_F_HW_VLAN_CTAG_TX */ 1650 if (skb_vlan_tag_present(skb)) { 1651 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME; 1652 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); 1653 } 1654 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) { 1655 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG; 1656 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); 1657 } 1658 1659 rcu_read_lock(); 1660 dst = qeth_dst_check_rcu(skb, proto); 1661 1662 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ) 1663 cast_type = RTN_UNICAST; 1664 else 1665 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, proto); 1666 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type); 1667 1668 switch (proto) { 1669 case htons(ETH_P_IP): 1670 l3_hdr->next_hop.addr.s6_addr32[3] = 1671 qeth_next_hop_v4_rcu(skb, dst); 1672 break; 1673 case htons(ETH_P_IPV6): 1674 l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst); 1675 1676 hdr->hdr.l3.flags |= QETH_HDR_IPV6; 1677 if (!IS_IQD(card)) 1678 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU; 1679 break; 1680 case htons(ETH_P_AF_IUCV): 1681 l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80); 1682 memcpy(&l3_hdr->next_hop.addr.s6_addr32[2], 1683 iucv_trans_hdr(skb)->destUserID, 8); 1684 l3_hdr->flags |= QETH_HDR_IPV6; 1685 break; 1686 default: 1687 /* OSA only: */ 1688 l3_hdr->flags |= QETH_HDR_PASSTHRU; 1689 } 1690 rcu_read_unlock(); 1691 } 1692 1693 static void qeth_l3_fixup_headers(struct sk_buff *skb) 1694 { 1695 struct iphdr *iph = ip_hdr(skb); 1696 1697 /* this is safe, IPv6 traffic takes a different path */ 1698 if (skb->ip_summed == CHECKSUM_PARTIAL) 1699 iph->check = 0; 1700 if (skb_is_gso(skb)) { 1701 iph->tot_len = 0; 1702 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr, 1703 iph->daddr, 0); 1704 } 1705 } 1706 1707 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb, 1708 struct qeth_qdio_out_q *queue, __be16 proto) 1709 { 1710 unsigned int hw_hdr_len; 1711 int rc; 1712 1713 /* re-use the L2 header area for the HW header: */ 1714 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) : 1715 sizeof(struct qeth_hdr); 1716 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN); 1717 if (rc) 1718 return rc; 1719 skb_pull(skb, ETH_HLEN); 1720 1721 qeth_l3_fixup_headers(skb); 1722 return qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header); 1723 } 1724 1725 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, 1726 struct net_device *dev) 1727 { 1728 struct qeth_card *card = dev->ml_priv; 1729 __be16 proto = vlan_get_protocol(skb); 1730 u16 txq = skb_get_queue_mapping(skb); 1731 struct qeth_qdio_out_q *queue; 1732 int rc; 1733 1734 if (!skb_is_gso(skb)) 1735 qdisc_skb_cb(skb)->pkt_len = skb->len; 1736 if (IS_IQD(card)) { 1737 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)]; 1738 1739 if (card->options.sniffer) 1740 goto tx_drop; 1741 1742 switch (proto) { 1743 case htons(ETH_P_AF_IUCV): 1744 if (card->options.cq != QETH_CQ_ENABLED) 1745 goto tx_drop; 1746 break; 1747 case htons(ETH_P_IP): 1748 case htons(ETH_P_IPV6): 1749 if (card->options.cq == QETH_CQ_ENABLED) 1750 goto tx_drop; 1751 break; 1752 default: 1753 goto tx_drop; 1754 } 1755 } else { 1756 queue = card->qdio.out_qs[txq]; 1757 } 1758 1759 if (!(dev->flags & IFF_BROADCAST) && 1760 qeth_l3_get_cast_type(skb, proto) == RTN_BROADCAST) 1761 goto tx_drop; 1762 1763 if (proto == htons(ETH_P_IP) || IS_IQD(card)) 1764 rc = qeth_l3_xmit(card, skb, queue, proto); 1765 else 1766 rc = qeth_xmit(card, skb, queue, proto, qeth_l3_fill_header); 1767 1768 if (!rc) 1769 return NETDEV_TX_OK; 1770 1771 tx_drop: 1772 QETH_TXQ_STAT_INC(queue, tx_dropped); 1773 kfree_skb(skb); 1774 return NETDEV_TX_OK; 1775 } 1776 1777 static void qeth_l3_set_rx_mode(struct net_device *dev) 1778 { 1779 struct qeth_card *card = dev->ml_priv; 1780 1781 schedule_work(&card->rx_mode_work); 1782 } 1783 1784 /* 1785 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting 1786 * NOARP on the netdevice is no option because it also turns off neighbor 1787 * solicitation. For IPv4 we install a neighbor_setup function. We don't want 1788 * arp resolution but we want the hard header (packet socket will work 1789 * e.g. tcpdump) 1790 */ 1791 static int qeth_l3_neigh_setup_noarp(struct neighbour *n) 1792 { 1793 n->nud_state = NUD_NOARP; 1794 memcpy(n->ha, "FAKELL", 6); 1795 n->output = n->ops->connected_output; 1796 return 0; 1797 } 1798 1799 static int 1800 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) 1801 { 1802 if (np->tbl->family == AF_INET) 1803 np->neigh_setup = qeth_l3_neigh_setup_noarp; 1804 1805 return 0; 1806 } 1807 1808 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb, 1809 struct net_device *dev, 1810 netdev_features_t features) 1811 { 1812 if (vlan_get_protocol(skb) != htons(ETH_P_IP)) 1813 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 1814 return qeth_features_check(skb, dev, features); 1815 } 1816 1817 static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 1818 struct net_device *sb_dev) 1819 { 1820 __be16 proto = vlan_get_protocol(skb); 1821 1822 return qeth_iqd_select_queue(dev, skb, 1823 qeth_l3_get_cast_type(skb, proto), sb_dev); 1824 } 1825 1826 static const struct net_device_ops qeth_l3_netdev_ops = { 1827 .ndo_open = qeth_open, 1828 .ndo_stop = qeth_stop, 1829 .ndo_get_stats64 = qeth_get_stats64, 1830 .ndo_start_xmit = qeth_l3_hard_start_xmit, 1831 .ndo_select_queue = qeth_l3_iqd_select_queue, 1832 .ndo_validate_addr = eth_validate_addr, 1833 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 1834 .ndo_eth_ioctl = qeth_do_ioctl, 1835 .ndo_siocdevprivate = qeth_l3_ndo_siocdevprivate, 1836 .ndo_fix_features = qeth_fix_features, 1837 .ndo_set_features = qeth_set_features, 1838 .ndo_tx_timeout = qeth_tx_timeout, 1839 }; 1840 1841 static const struct net_device_ops qeth_l3_osa_netdev_ops = { 1842 .ndo_open = qeth_open, 1843 .ndo_stop = qeth_stop, 1844 .ndo_get_stats64 = qeth_get_stats64, 1845 .ndo_start_xmit = qeth_l3_hard_start_xmit, 1846 .ndo_features_check = qeth_l3_osa_features_check, 1847 .ndo_select_queue = qeth_osa_select_queue, 1848 .ndo_validate_addr = eth_validate_addr, 1849 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 1850 .ndo_eth_ioctl = qeth_do_ioctl, 1851 .ndo_siocdevprivate = qeth_l3_ndo_siocdevprivate, 1852 .ndo_fix_features = qeth_fix_features, 1853 .ndo_set_features = qeth_set_features, 1854 .ndo_tx_timeout = qeth_tx_timeout, 1855 .ndo_neigh_setup = qeth_l3_neigh_setup, 1856 }; 1857 1858 static int qeth_l3_setup_netdev(struct qeth_card *card) 1859 { 1860 struct net_device *dev = card->dev; 1861 unsigned int headroom; 1862 int rc; 1863 1864 if (IS_OSD(card) || IS_OSX(card)) { 1865 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; 1866 1867 /*IPv6 address autoconfiguration stuff*/ 1868 dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id); 1869 1870 if (!IS_VM_NIC(card)) { 1871 card->dev->features |= NETIF_F_SG; 1872 card->dev->hw_features |= NETIF_F_TSO | 1873 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 1874 card->dev->vlan_features |= NETIF_F_TSO | 1875 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 1876 } 1877 1878 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 1879 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 1880 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 1881 } 1882 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 1883 card->dev->hw_features |= NETIF_F_TSO6; 1884 card->dev->vlan_features |= NETIF_F_TSO6; 1885 } 1886 1887 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */ 1888 if (card->dev->hw_features & NETIF_F_TSO6) 1889 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN; 1890 else if (card->dev->hw_features & NETIF_F_TSO) 1891 headroom = sizeof(struct qeth_hdr_tso); 1892 else 1893 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN; 1894 } else if (IS_IQD(card)) { 1895 card->dev->flags |= IFF_NOARP; 1896 card->dev->netdev_ops = &qeth_l3_netdev_ops; 1897 headroom = sizeof(struct qeth_hdr) - ETH_HLEN; 1898 1899 rc = qeth_l3_iqd_read_initial_mac(card); 1900 if (rc) 1901 return rc; 1902 } else 1903 return -ENODEV; 1904 1905 card->dev->needed_headroom = headroom; 1906 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 1907 NETIF_F_HW_VLAN_CTAG_RX; 1908 1909 netif_keep_dst(card->dev); 1910 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) 1911 netif_set_tso_max_size(card->dev, 1912 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1)); 1913 1914 netif_napi_add(card->dev, &card->napi, qeth_poll); 1915 return register_netdev(card->dev); 1916 } 1917 1918 static const struct device_type qeth_l3_devtype = { 1919 .name = "qeth_layer3", 1920 .groups = qeth_l3_attr_groups, 1921 }; 1922 1923 static int qeth_l3_probe_device(struct ccwgroup_device *gdev) 1924 { 1925 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1926 int rc; 1927 1928 hash_init(card->ip_htable); 1929 mutex_init(&card->ip_lock); 1930 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0, 1931 dev_name(&gdev->dev)); 1932 if (!card->cmd_wq) 1933 return -ENOMEM; 1934 1935 if (gdev->dev.type) { 1936 rc = device_add_groups(&gdev->dev, qeth_l3_attr_groups); 1937 if (rc) { 1938 destroy_workqueue(card->cmd_wq); 1939 return rc; 1940 } 1941 } else { 1942 gdev->dev.type = &qeth_l3_devtype; 1943 } 1944 1945 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work); 1946 return 0; 1947 } 1948 1949 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) 1950 { 1951 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1952 1953 if (cgdev->dev.type != &qeth_l3_devtype) 1954 device_remove_groups(&cgdev->dev, qeth_l3_attr_groups); 1955 1956 qeth_set_allowed_threads(card, 0, 1); 1957 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1958 1959 if (cgdev->state == CCWGROUP_ONLINE) 1960 qeth_set_offline(card, card->discipline, false); 1961 1962 if (card->dev->reg_state == NETREG_REGISTERED) 1963 unregister_netdev(card->dev); 1964 1965 destroy_workqueue(card->cmd_wq); 1966 qeth_l3_clear_ip_htable(card, 0); 1967 qeth_l3_clear_ipato_list(card); 1968 } 1969 1970 static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok) 1971 { 1972 struct net_device *dev = card->dev; 1973 int rc = 0; 1974 1975 /* softsetup */ 1976 QETH_CARD_TEXT(card, 2, "softsetp"); 1977 1978 rc = qeth_l3_setadapter_parms(card); 1979 if (rc) 1980 QETH_CARD_TEXT_(card, 2, "2err%04x", rc); 1981 if (!card->options.sniffer) { 1982 qeth_l3_start_ipassists(card); 1983 1984 rc = qeth_l3_setrouting_v4(card); 1985 if (rc) 1986 QETH_CARD_TEXT_(card, 2, "4err%04x", rc); 1987 rc = qeth_l3_setrouting_v6(card); 1988 if (rc) 1989 QETH_CARD_TEXT_(card, 2, "5err%04x", rc); 1990 } 1991 1992 card->state = CARD_STATE_SOFTSETUP; 1993 1994 qeth_set_allowed_threads(card, 0xffffffff, 0); 1995 qeth_l3_recover_ip(card); 1996 1997 if (dev->reg_state != NETREG_REGISTERED) { 1998 rc = qeth_l3_setup_netdev(card); 1999 if (rc) 2000 goto err_setup; 2001 2002 if (carrier_ok) 2003 netif_carrier_on(dev); 2004 } else { 2005 rtnl_lock(); 2006 rc = qeth_set_real_num_tx_queues(card, 2007 qeth_tx_actual_queues(card)); 2008 if (rc) { 2009 rtnl_unlock(); 2010 goto err_set_queues; 2011 } 2012 2013 if (carrier_ok) 2014 netif_carrier_on(dev); 2015 else 2016 netif_carrier_off(dev); 2017 2018 netif_device_attach(dev); 2019 qeth_enable_hw_features(dev); 2020 2021 if (netif_running(dev)) { 2022 local_bh_disable(); 2023 napi_schedule(&card->napi); 2024 /* kick-start the NAPI softirq: */ 2025 local_bh_enable(); 2026 } 2027 rtnl_unlock(); 2028 } 2029 return 0; 2030 2031 err_set_queues: 2032 err_setup: 2033 qeth_set_allowed_threads(card, 0, 1); 2034 card->state = CARD_STATE_DOWN; 2035 qeth_l3_clear_ip_htable(card, 1); 2036 return rc; 2037 } 2038 2039 static void qeth_l3_set_offline(struct qeth_card *card) 2040 { 2041 qeth_set_allowed_threads(card, 0, 1); 2042 qeth_l3_drain_rx_mode_cache(card); 2043 2044 if (card->options.sniffer && 2045 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) 2046 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 2047 2048 if (card->state == CARD_STATE_SOFTSETUP) { 2049 card->state = CARD_STATE_DOWN; 2050 qeth_l3_clear_ip_htable(card, 1); 2051 } 2052 } 2053 2054 /* Returns zero if the command is successfully "consumed" */ 2055 static int qeth_l3_control_event(struct qeth_card *card, 2056 struct qeth_ipa_cmd *cmd) 2057 { 2058 return 1; 2059 } 2060 2061 const struct qeth_discipline qeth_l3_discipline = { 2062 .setup = qeth_l3_probe_device, 2063 .remove = qeth_l3_remove_device, 2064 .set_online = qeth_l3_set_online, 2065 .set_offline = qeth_l3_set_offline, 2066 .control_event_handler = qeth_l3_control_event, 2067 }; 2068 EXPORT_SYMBOL_GPL(qeth_l3_discipline); 2069 2070 static int qeth_l3_handle_ip_event(struct qeth_card *card, 2071 struct qeth_ipaddr *addr, 2072 unsigned long event) 2073 { 2074 switch (event) { 2075 case NETDEV_UP: 2076 qeth_l3_modify_ip(card, addr, true); 2077 return NOTIFY_OK; 2078 case NETDEV_DOWN: 2079 qeth_l3_modify_ip(card, addr, false); 2080 return NOTIFY_OK; 2081 default: 2082 return NOTIFY_DONE; 2083 } 2084 } 2085 2086 struct qeth_l3_ip_event_work { 2087 struct work_struct work; 2088 struct qeth_card *card; 2089 struct qeth_ipaddr addr; 2090 }; 2091 2092 #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work) 2093 2094 static void qeth_l3_add_ip_worker(struct work_struct *work) 2095 { 2096 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); 2097 2098 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true); 2099 kfree(work); 2100 } 2101 2102 static void qeth_l3_delete_ip_worker(struct work_struct *work) 2103 { 2104 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); 2105 2106 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false); 2107 kfree(work); 2108 } 2109 2110 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) 2111 { 2112 if (is_vlan_dev(dev)) 2113 dev = vlan_dev_real_dev(dev); 2114 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops || 2115 dev->netdev_ops == &qeth_l3_netdev_ops) 2116 return (struct qeth_card *) dev->ml_priv; 2117 return NULL; 2118 } 2119 2120 static int qeth_l3_ip_event(struct notifier_block *this, 2121 unsigned long event, void *ptr) 2122 { 2123 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 2124 struct net_device *dev = ifa->ifa_dev->dev; 2125 struct qeth_ipaddr addr; 2126 struct qeth_card *card; 2127 2128 card = qeth_l3_get_card_from_dev(dev); 2129 if (!card) 2130 return NOTIFY_DONE; 2131 QETH_CARD_TEXT(card, 3, "ipevent"); 2132 2133 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); 2134 addr.u.a4.addr = ifa->ifa_address; 2135 addr.u.a4.mask = ifa->ifa_mask; 2136 2137 return qeth_l3_handle_ip_event(card, &addr, event); 2138 } 2139 2140 static struct notifier_block qeth_l3_ip_notifier = { 2141 qeth_l3_ip_event, 2142 NULL, 2143 }; 2144 2145 static int qeth_l3_ip6_event(struct notifier_block *this, 2146 unsigned long event, void *ptr) 2147 { 2148 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 2149 struct net_device *dev = ifa->idev->dev; 2150 struct qeth_l3_ip_event_work *ip_work; 2151 struct qeth_card *card; 2152 2153 if (event != NETDEV_UP && event != NETDEV_DOWN) 2154 return NOTIFY_DONE; 2155 2156 card = qeth_l3_get_card_from_dev(dev); 2157 if (!card) 2158 return NOTIFY_DONE; 2159 QETH_CARD_TEXT(card, 3, "ip6event"); 2160 if (!qeth_is_supported(card, IPA_IPV6)) 2161 return NOTIFY_DONE; 2162 2163 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC); 2164 if (!ip_work) 2165 return NOTIFY_DONE; 2166 2167 if (event == NETDEV_UP) 2168 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker); 2169 else 2170 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker); 2171 2172 ip_work->card = card; 2173 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL, 2174 QETH_PROT_IPV6); 2175 ip_work->addr.u.a6.addr = ifa->addr; 2176 ip_work->addr.u.a6.pfxlen = ifa->prefix_len; 2177 2178 queue_work(card->cmd_wq, &ip_work->work); 2179 return NOTIFY_OK; 2180 } 2181 2182 static struct notifier_block qeth_l3_ip6_notifier = { 2183 qeth_l3_ip6_event, 2184 NULL, 2185 }; 2186 2187 static int qeth_l3_register_notifiers(void) 2188 { 2189 int rc; 2190 2191 QETH_DBF_TEXT(SETUP, 5, "regnotif"); 2192 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); 2193 if (rc) 2194 return rc; 2195 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); 2196 if (rc) { 2197 unregister_inetaddr_notifier(&qeth_l3_ip_notifier); 2198 return rc; 2199 } 2200 return 0; 2201 } 2202 2203 static void qeth_l3_unregister_notifiers(void) 2204 { 2205 QETH_DBF_TEXT(SETUP, 5, "unregnot"); 2206 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); 2207 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); 2208 } 2209 2210 static int __init qeth_l3_init(void) 2211 { 2212 pr_info("register layer 3 discipline\n"); 2213 return qeth_l3_register_notifiers(); 2214 } 2215 2216 static void __exit qeth_l3_exit(void) 2217 { 2218 qeth_l3_unregister_notifiers(); 2219 pr_info("unregister layer 3 discipline\n"); 2220 } 2221 2222 module_init(qeth_l3_init); 2223 module_exit(qeth_l3_exit); 2224 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2225 MODULE_DESCRIPTION("qeth layer 3 discipline"); 2226 MODULE_LICENSE("GPL"); 2227