1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2007, 2009 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #define KMSG_COMPONENT "qeth" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/bitops.h> 16 #include <linux/string.h> 17 #include <linux/errno.h> 18 #include <linux/kernel.h> 19 #include <linux/etherdevice.h> 20 #include <linux/ip.h> 21 #include <linux/in.h> 22 #include <linux/ipv6.h> 23 #include <linux/inetdevice.h> 24 #include <linux/igmp.h> 25 #include <linux/slab.h> 26 #include <linux/if_ether.h> 27 #include <linux/if_vlan.h> 28 #include <linux/skbuff.h> 29 30 #include <net/ip.h> 31 #include <net/arp.h> 32 #include <net/route.h> 33 #include <net/ipv6.h> 34 #include <net/ip6_route.h> 35 #include <net/iucv/af_iucv.h> 36 #include <linux/hashtable.h> 37 38 #include "qeth_l3.h" 39 40 static int qeth_l3_register_addr_entry(struct qeth_card *, 41 struct qeth_ipaddr *); 42 static int qeth_l3_deregister_addr_entry(struct qeth_card *, 43 struct qeth_ipaddr *); 44 45 int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr, 46 char *buf) 47 { 48 if (proto == QETH_PROT_IPV4) 49 return sprintf(buf, "%pI4", addr); 50 else 51 return sprintf(buf, "%pI6", addr); 52 } 53 54 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card, 55 struct qeth_ipaddr *query) 56 { 57 u32 key = qeth_l3_ipaddr_hash(query); 58 struct qeth_ipaddr *addr; 59 60 if (query->is_multicast) { 61 hash_for_each_possible(card->rx_mode_addrs, addr, hnode, key) 62 if (qeth_l3_addr_match_ip(addr, query)) 63 return addr; 64 } else { 65 hash_for_each_possible(card->ip_htable, addr, hnode, key) 66 if (qeth_l3_addr_match_ip(addr, query)) 67 return addr; 68 } 69 return NULL; 70 } 71 72 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len) 73 { 74 int i, j; 75 u8 octet; 76 77 for (i = 0; i < len; ++i) { 78 octet = addr[i]; 79 for (j = 7; j >= 0; --j) { 80 bits[i*8 + j] = octet & 1; 81 octet >>= 1; 82 } 83 } 84 } 85 86 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, 87 struct qeth_ipaddr *addr) 88 { 89 struct qeth_ipato_entry *ipatoe; 90 u8 addr_bits[128] = {0, }; 91 u8 ipatoe_bits[128] = {0, }; 92 int rc = 0; 93 94 if (!card->ipato.enabled) 95 return false; 96 if (addr->type != QETH_IP_TYPE_NORMAL) 97 return false; 98 99 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits, 100 (addr->proto == QETH_PROT_IPV4) ? 4 : 16); 101 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 102 if (addr->proto != ipatoe->proto) 103 continue; 104 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits, 105 (ipatoe->proto == QETH_PROT_IPV4) ? 106 4 : 16); 107 if (addr->proto == QETH_PROT_IPV4) 108 rc = !memcmp(addr_bits, ipatoe_bits, ipatoe->mask_bits); 109 else 110 rc = !memcmp(addr_bits, ipatoe_bits, ipatoe->mask_bits); 111 if (rc) 112 break; 113 } 114 /* invert? */ 115 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4) 116 rc = !rc; 117 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6) 118 rc = !rc; 119 120 return rc; 121 } 122 123 static int qeth_l3_delete_ip(struct qeth_card *card, 124 struct qeth_ipaddr *tmp_addr) 125 { 126 int rc = 0; 127 struct qeth_ipaddr *addr; 128 129 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 130 QETH_CARD_TEXT(card, 2, "delrxip"); 131 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 132 QETH_CARD_TEXT(card, 2, "delvipa"); 133 else 134 QETH_CARD_TEXT(card, 2, "delip"); 135 136 if (tmp_addr->proto == QETH_PROT_IPV4) 137 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 138 else { 139 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 140 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 141 } 142 143 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 144 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr)) 145 return -ENOENT; 146 147 addr->ref_counter--; 148 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0) 149 return rc; 150 151 if (qeth_card_hw_is_reachable(card)) 152 rc = qeth_l3_deregister_addr_entry(card, addr); 153 154 hash_del(&addr->hnode); 155 kfree(addr); 156 157 return rc; 158 } 159 160 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) 161 { 162 int rc = 0; 163 struct qeth_ipaddr *addr; 164 char buf[40]; 165 166 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 167 QETH_CARD_TEXT(card, 2, "addrxip"); 168 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 169 QETH_CARD_TEXT(card, 2, "addvipa"); 170 else 171 QETH_CARD_TEXT(card, 2, "addip"); 172 173 if (tmp_addr->proto == QETH_PROT_IPV4) 174 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 175 else { 176 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 177 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 178 } 179 180 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 181 if (addr) { 182 if (tmp_addr->type != QETH_IP_TYPE_NORMAL) 183 return -EADDRINUSE; 184 if (qeth_l3_addr_match_all(addr, tmp_addr)) { 185 addr->ref_counter++; 186 return 0; 187 } 188 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u, 189 buf); 190 dev_warn(&card->gdev->dev, 191 "Registering IP address %s failed\n", buf); 192 return -EADDRINUSE; 193 } else { 194 addr = kmemdup(tmp_addr, sizeof(*tmp_addr), GFP_KERNEL); 195 if (!addr) 196 return -ENOMEM; 197 198 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) { 199 QETH_CARD_TEXT(card, 2, "tkovaddr"); 200 addr->ipato = 1; 201 } 202 hash_add(card->ip_htable, &addr->hnode, 203 qeth_l3_ipaddr_hash(addr)); 204 205 if (!qeth_card_hw_is_reachable(card)) { 206 addr->disp_flag = QETH_DISP_ADDR_ADD; 207 return 0; 208 } 209 210 rc = qeth_l3_register_addr_entry(card, addr); 211 212 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) { 213 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 214 } else { 215 hash_del(&addr->hnode); 216 kfree(addr); 217 } 218 } 219 return rc; 220 } 221 222 static int qeth_l3_modify_ip(struct qeth_card *card, struct qeth_ipaddr *addr, 223 bool add) 224 { 225 int rc; 226 227 mutex_lock(&card->ip_lock); 228 rc = add ? qeth_l3_add_ip(card, addr) : qeth_l3_delete_ip(card, addr); 229 mutex_unlock(&card->ip_lock); 230 231 return rc; 232 } 233 234 static void qeth_l3_drain_rx_mode_cache(struct qeth_card *card) 235 { 236 struct qeth_ipaddr *addr; 237 struct hlist_node *tmp; 238 int i; 239 240 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) { 241 hash_del(&addr->hnode); 242 kfree(addr); 243 } 244 } 245 246 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) 247 { 248 struct qeth_ipaddr *addr; 249 struct hlist_node *tmp; 250 int i; 251 252 QETH_CARD_TEXT(card, 4, "clearip"); 253 254 mutex_lock(&card->ip_lock); 255 256 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 257 if (!recover) { 258 hash_del(&addr->hnode); 259 kfree(addr); 260 continue; 261 } 262 addr->disp_flag = QETH_DISP_ADDR_ADD; 263 } 264 265 mutex_unlock(&card->ip_lock); 266 } 267 268 static void qeth_l3_recover_ip(struct qeth_card *card) 269 { 270 struct qeth_ipaddr *addr; 271 struct hlist_node *tmp; 272 int i; 273 int rc; 274 275 QETH_CARD_TEXT(card, 4, "recovrip"); 276 277 mutex_lock(&card->ip_lock); 278 279 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 280 if (addr->disp_flag == QETH_DISP_ADDR_ADD) { 281 rc = qeth_l3_register_addr_entry(card, addr); 282 283 if (!rc) { 284 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 285 } else { 286 hash_del(&addr->hnode); 287 kfree(addr); 288 } 289 } 290 } 291 292 mutex_unlock(&card->ip_lock); 293 } 294 295 static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply, 296 unsigned long data) 297 { 298 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 299 300 switch (cmd->hdr.return_code) { 301 case IPA_RC_SUCCESS: 302 return 0; 303 case IPA_RC_DUPLICATE_IP_ADDRESS: 304 return -EADDRINUSE; 305 case IPA_RC_MC_ADDR_NOT_FOUND: 306 return -ENOENT; 307 case IPA_RC_LAN_OFFLINE: 308 return -ENETDOWN; 309 default: 310 return -EIO; 311 } 312 } 313 314 static int qeth_l3_send_setdelmc(struct qeth_card *card, 315 struct qeth_ipaddr *addr, 316 enum qeth_ipa_cmds ipacmd) 317 { 318 struct qeth_cmd_buffer *iob; 319 struct qeth_ipa_cmd *cmd; 320 321 QETH_CARD_TEXT(card, 4, "setdelmc"); 322 323 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto, 324 IPA_DATA_SIZEOF(setdelipm)); 325 if (!iob) 326 return -ENOMEM; 327 cmd = __ipa_cmd(iob); 328 if (addr->proto == QETH_PROT_IPV6) { 329 cmd->data.setdelipm.ip = addr->u.a6.addr; 330 ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac); 331 } else { 332 cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr; 333 ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac); 334 } 335 336 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); 337 } 338 339 static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len) 340 { 341 unsigned int i = 0; 342 343 while (len && i < 4) { 344 int mask_len = min_t(int, len, 32); 345 346 prefix->s6_addr32[i] = inet_make_mask(mask_len); 347 len -= mask_len; 348 i++; 349 } 350 } 351 352 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set) 353 { 354 switch (addr->type) { 355 case QETH_IP_TYPE_RXIP: 356 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 357 case QETH_IP_TYPE_VIPA: 358 return (set) ? QETH_IPA_SETIP_VIPA_FLAG : 359 QETH_IPA_DELIP_VIPA_FLAG; 360 default: 361 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 362 } 363 } 364 365 static int qeth_l3_send_setdelip(struct qeth_card *card, 366 struct qeth_ipaddr *addr, 367 enum qeth_ipa_cmds ipacmd) 368 { 369 struct qeth_cmd_buffer *iob; 370 struct qeth_ipa_cmd *cmd; 371 u32 flags; 372 373 QETH_CARD_TEXT(card, 4, "setdelip"); 374 375 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto, 376 IPA_DATA_SIZEOF(setdelip6)); 377 if (!iob) 378 return -ENOMEM; 379 cmd = __ipa_cmd(iob); 380 381 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP); 382 QETH_CARD_TEXT_(card, 4, "flags%02X", flags); 383 384 if (addr->proto == QETH_PROT_IPV6) { 385 cmd->data.setdelip6.addr = addr->u.a6.addr; 386 qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix, 387 addr->u.a6.pfxlen); 388 cmd->data.setdelip6.flags = flags; 389 } else { 390 cmd->data.setdelip4.addr = addr->u.a4.addr; 391 cmd->data.setdelip4.mask = addr->u.a4.mask; 392 cmd->data.setdelip4.flags = flags; 393 } 394 395 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); 396 } 397 398 static int qeth_l3_send_setrouting(struct qeth_card *card, 399 enum qeth_routing_types type, enum qeth_prot_versions prot) 400 { 401 int rc; 402 struct qeth_ipa_cmd *cmd; 403 struct qeth_cmd_buffer *iob; 404 405 QETH_CARD_TEXT(card, 4, "setroutg"); 406 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot, 407 IPA_DATA_SIZEOF(setrtg)); 408 if (!iob) 409 return -ENOMEM; 410 cmd = __ipa_cmd(iob); 411 cmd->data.setrtg.type = (type); 412 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 413 414 return rc; 415 } 416 417 static int qeth_l3_correct_routing_type(struct qeth_card *card, 418 enum qeth_routing_types *type, enum qeth_prot_versions prot) 419 { 420 if (IS_IQD(card)) { 421 switch (*type) { 422 case NO_ROUTER: 423 case PRIMARY_CONNECTOR: 424 case SECONDARY_CONNECTOR: 425 case MULTICAST_ROUTER: 426 return 0; 427 default: 428 goto out_inval; 429 } 430 } else { 431 switch (*type) { 432 case NO_ROUTER: 433 case PRIMARY_ROUTER: 434 case SECONDARY_ROUTER: 435 return 0; 436 case MULTICAST_ROUTER: 437 if (qeth_is_ipafunc_supported(card, prot, 438 IPA_OSA_MC_ROUTER)) 439 return 0; 440 default: 441 goto out_inval; 442 } 443 } 444 out_inval: 445 *type = NO_ROUTER; 446 return -EINVAL; 447 } 448 449 int qeth_l3_setrouting_v4(struct qeth_card *card) 450 { 451 int rc; 452 453 QETH_CARD_TEXT(card, 3, "setrtg4"); 454 455 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, 456 QETH_PROT_IPV4); 457 if (rc) 458 return rc; 459 460 rc = qeth_l3_send_setrouting(card, card->options.route4.type, 461 QETH_PROT_IPV4); 462 if (rc) { 463 card->options.route4.type = NO_ROUTER; 464 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 465 rc, CARD_DEVID(card)); 466 } 467 return rc; 468 } 469 470 int qeth_l3_setrouting_v6(struct qeth_card *card) 471 { 472 int rc = 0; 473 474 QETH_CARD_TEXT(card, 3, "setrtg6"); 475 476 if (!qeth_is_supported(card, IPA_IPV6)) 477 return 0; 478 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type, 479 QETH_PROT_IPV6); 480 if (rc) 481 return rc; 482 483 rc = qeth_l3_send_setrouting(card, card->options.route6.type, 484 QETH_PROT_IPV6); 485 if (rc) { 486 card->options.route6.type = NO_ROUTER; 487 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 488 rc, CARD_DEVID(card)); 489 } 490 return rc; 491 } 492 493 /* 494 * IP address takeover related functions 495 */ 496 497 /** 498 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs. 499 * 500 * Caller must hold ip_lock. 501 */ 502 void qeth_l3_update_ipato(struct qeth_card *card) 503 { 504 struct qeth_ipaddr *addr; 505 unsigned int i; 506 507 hash_for_each(card->ip_htable, i, addr, hnode) { 508 if (addr->type != QETH_IP_TYPE_NORMAL) 509 continue; 510 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr); 511 } 512 } 513 514 static void qeth_l3_clear_ipato_list(struct qeth_card *card) 515 { 516 struct qeth_ipato_entry *ipatoe, *tmp; 517 518 mutex_lock(&card->ip_lock); 519 520 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 521 list_del(&ipatoe->entry); 522 kfree(ipatoe); 523 } 524 525 qeth_l3_update_ipato(card); 526 mutex_unlock(&card->ip_lock); 527 } 528 529 int qeth_l3_add_ipato_entry(struct qeth_card *card, 530 struct qeth_ipato_entry *new) 531 { 532 struct qeth_ipato_entry *ipatoe; 533 int rc = 0; 534 535 QETH_CARD_TEXT(card, 2, "addipato"); 536 537 mutex_lock(&card->ip_lock); 538 539 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 540 if (ipatoe->proto != new->proto) 541 continue; 542 if (!memcmp(ipatoe->addr, new->addr, 543 (ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16) && 544 (ipatoe->mask_bits == new->mask_bits)) { 545 rc = -EEXIST; 546 break; 547 } 548 } 549 550 if (!rc) { 551 list_add_tail(&new->entry, &card->ipato.entries); 552 qeth_l3_update_ipato(card); 553 } 554 555 mutex_unlock(&card->ip_lock); 556 557 return rc; 558 } 559 560 int qeth_l3_del_ipato_entry(struct qeth_card *card, 561 enum qeth_prot_versions proto, u8 *addr, 562 unsigned int mask_bits) 563 { 564 struct qeth_ipato_entry *ipatoe, *tmp; 565 int rc = -ENOENT; 566 567 QETH_CARD_TEXT(card, 2, "delipato"); 568 569 mutex_lock(&card->ip_lock); 570 571 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 572 if (ipatoe->proto != proto) 573 continue; 574 if (!memcmp(ipatoe->addr, addr, 575 (proto == QETH_PROT_IPV4) ? 4 : 16) && 576 (ipatoe->mask_bits == mask_bits)) { 577 list_del(&ipatoe->entry); 578 qeth_l3_update_ipato(card); 579 kfree(ipatoe); 580 rc = 0; 581 } 582 } 583 584 mutex_unlock(&card->ip_lock); 585 586 return rc; 587 } 588 589 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip, 590 enum qeth_ip_types type, 591 enum qeth_prot_versions proto) 592 { 593 struct qeth_ipaddr addr; 594 595 qeth_l3_init_ipaddr(&addr, type, proto); 596 if (proto == QETH_PROT_IPV4) 597 memcpy(&addr.u.a4.addr, ip, 4); 598 else 599 memcpy(&addr.u.a6.addr, ip, 16); 600 601 return qeth_l3_modify_ip(card, &addr, add); 602 } 603 604 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add) 605 { 606 struct qeth_ipaddr addr; 607 unsigned int i; 608 609 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 610 addr.u.a6.addr.s6_addr[0] = 0xfe; 611 addr.u.a6.addr.s6_addr[1] = 0x80; 612 for (i = 0; i < 8; i++) 613 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i]; 614 615 return qeth_l3_modify_ip(card, &addr, add); 616 } 617 618 static int qeth_l3_register_addr_entry(struct qeth_card *card, 619 struct qeth_ipaddr *addr) 620 { 621 char buf[50]; 622 int rc = 0; 623 int cnt = 3; 624 625 if (card->options.sniffer) 626 return 0; 627 628 if (addr->proto == QETH_PROT_IPV4) { 629 QETH_CARD_TEXT(card, 2, "setaddr4"); 630 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 631 } else if (addr->proto == QETH_PROT_IPV6) { 632 QETH_CARD_TEXT(card, 2, "setaddr6"); 633 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 634 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 635 } else { 636 QETH_CARD_TEXT(card, 2, "setaddr?"); 637 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 638 } 639 do { 640 if (addr->is_multicast) 641 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); 642 else 643 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP); 644 if (rc) 645 QETH_CARD_TEXT(card, 2, "failed"); 646 } while ((--cnt > 0) && rc); 647 if (rc) { 648 QETH_CARD_TEXT(card, 2, "FAILED"); 649 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); 650 dev_warn(&card->gdev->dev, 651 "Registering IP address %s failed\n", buf); 652 } 653 return rc; 654 } 655 656 static int qeth_l3_deregister_addr_entry(struct qeth_card *card, 657 struct qeth_ipaddr *addr) 658 { 659 int rc = 0; 660 661 if (card->options.sniffer) 662 return 0; 663 664 if (addr->proto == QETH_PROT_IPV4) { 665 QETH_CARD_TEXT(card, 2, "deladdr4"); 666 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 667 } else if (addr->proto == QETH_PROT_IPV6) { 668 QETH_CARD_TEXT(card, 2, "deladdr6"); 669 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 670 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 671 } else { 672 QETH_CARD_TEXT(card, 2, "deladdr?"); 673 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 674 } 675 if (addr->is_multicast) 676 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); 677 else 678 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP); 679 if (rc) 680 QETH_CARD_TEXT(card, 2, "failed"); 681 682 return rc; 683 } 684 685 static int qeth_l3_setadapter_parms(struct qeth_card *card) 686 { 687 int rc = 0; 688 689 QETH_CARD_TEXT(card, 2, "setadprm"); 690 691 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { 692 rc = qeth_setadpparms_change_macaddr(card); 693 if (rc) 694 dev_warn(&card->gdev->dev, "Reading the adapter MAC" 695 " address failed\n"); 696 } 697 698 return rc; 699 } 700 701 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) 702 { 703 int rc; 704 705 QETH_CARD_TEXT(card, 3, "ipaarp"); 706 707 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 708 dev_info(&card->gdev->dev, 709 "ARP processing not supported on %s!\n", 710 netdev_name(card->dev)); 711 return 0; 712 } 713 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 714 IPA_CMD_ASS_START, NULL); 715 if (rc) { 716 dev_warn(&card->gdev->dev, 717 "Starting ARP processing support for %s failed\n", 718 netdev_name(card->dev)); 719 } 720 return rc; 721 } 722 723 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 724 { 725 int rc; 726 727 QETH_CARD_TEXT(card, 3, "stsrcmac"); 728 729 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { 730 dev_info(&card->gdev->dev, 731 "Inbound source MAC-address not supported on %s\n", 732 netdev_name(card->dev)); 733 return -EOPNOTSUPP; 734 } 735 736 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC, 737 IPA_CMD_ASS_START, NULL); 738 if (rc) 739 dev_warn(&card->gdev->dev, 740 "Starting source MAC-address support for %s failed\n", 741 netdev_name(card->dev)); 742 return rc; 743 } 744 745 static int qeth_l3_start_ipa_vlan(struct qeth_card *card) 746 { 747 int rc = 0; 748 749 QETH_CARD_TEXT(card, 3, "strtvlan"); 750 751 if (!qeth_is_supported(card, IPA_FULL_VLAN)) { 752 dev_info(&card->gdev->dev, 753 "VLAN not supported on %s\n", netdev_name(card->dev)); 754 return -EOPNOTSUPP; 755 } 756 757 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO, 758 IPA_CMD_ASS_START, NULL); 759 if (rc) { 760 dev_warn(&card->gdev->dev, 761 "Starting VLAN support for %s failed\n", 762 netdev_name(card->dev)); 763 } else { 764 dev_info(&card->gdev->dev, "VLAN enabled\n"); 765 } 766 return rc; 767 } 768 769 static int qeth_l3_start_ipa_multicast(struct qeth_card *card) 770 { 771 int rc; 772 773 QETH_CARD_TEXT(card, 3, "stmcast"); 774 775 if (!qeth_is_supported(card, IPA_MULTICASTING)) { 776 dev_info(&card->gdev->dev, 777 "Multicast not supported on %s\n", 778 netdev_name(card->dev)); 779 return -EOPNOTSUPP; 780 } 781 782 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING, 783 IPA_CMD_ASS_START, NULL); 784 if (rc) { 785 dev_warn(&card->gdev->dev, 786 "Starting multicast support for %s failed\n", 787 netdev_name(card->dev)); 788 } else { 789 dev_info(&card->gdev->dev, "Multicast enabled\n"); 790 card->dev->flags |= IFF_MULTICAST; 791 } 792 return rc; 793 } 794 795 static int qeth_l3_softsetup_ipv6(struct qeth_card *card) 796 { 797 u32 ipv6_data = 3; 798 int rc; 799 800 QETH_CARD_TEXT(card, 3, "softipv6"); 801 802 if (IS_IQD(card)) 803 goto out; 804 805 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START, 806 &ipv6_data); 807 if (rc) { 808 dev_err(&card->gdev->dev, 809 "Activating IPv6 support for %s failed\n", 810 netdev_name(card->dev)); 811 return rc; 812 } 813 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START, 814 NULL); 815 if (rc) { 816 dev_err(&card->gdev->dev, 817 "Activating IPv6 support for %s failed\n", 818 netdev_name(card->dev)); 819 return rc; 820 } 821 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU, 822 IPA_CMD_ASS_START, NULL); 823 if (rc) { 824 dev_warn(&card->gdev->dev, 825 "Enabling the passthrough mode for %s failed\n", 826 netdev_name(card->dev)); 827 return rc; 828 } 829 out: 830 dev_info(&card->gdev->dev, "IPV6 enabled\n"); 831 return 0; 832 } 833 834 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) 835 { 836 QETH_CARD_TEXT(card, 3, "strtipv6"); 837 838 if (!qeth_is_supported(card, IPA_IPV6)) { 839 dev_info(&card->gdev->dev, 840 "IPv6 not supported on %s\n", netdev_name(card->dev)); 841 return 0; 842 } 843 return qeth_l3_softsetup_ipv6(card); 844 } 845 846 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) 847 { 848 u32 filter_data = 1; 849 int rc; 850 851 QETH_CARD_TEXT(card, 3, "stbrdcst"); 852 card->info.broadcast_capable = 0; 853 if (!qeth_is_supported(card, IPA_FILTERING)) { 854 dev_info(&card->gdev->dev, 855 "Broadcast not supported on %s\n", 856 netdev_name(card->dev)); 857 rc = -EOPNOTSUPP; 858 goto out; 859 } 860 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 861 IPA_CMD_ASS_START, NULL); 862 if (rc) { 863 dev_warn(&card->gdev->dev, 864 "Enabling broadcast filtering for %s failed\n", 865 netdev_name(card->dev)); 866 goto out; 867 } 868 869 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 870 IPA_CMD_ASS_CONFIGURE, &filter_data); 871 if (rc) { 872 dev_warn(&card->gdev->dev, 873 "Setting up broadcast filtering for %s failed\n", 874 netdev_name(card->dev)); 875 goto out; 876 } 877 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; 878 dev_info(&card->gdev->dev, "Broadcast enabled\n"); 879 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 880 IPA_CMD_ASS_ENABLE, &filter_data); 881 if (rc) { 882 dev_warn(&card->gdev->dev, 883 "Setting up broadcast echo filtering for %s failed\n", 884 netdev_name(card->dev)); 885 goto out; 886 } 887 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; 888 out: 889 if (card->info.broadcast_capable) 890 card->dev->flags |= IFF_BROADCAST; 891 else 892 card->dev->flags &= ~IFF_BROADCAST; 893 return rc; 894 } 895 896 static void qeth_l3_start_ipassists(struct qeth_card *card) 897 { 898 QETH_CARD_TEXT(card, 3, "strtipas"); 899 900 qeth_l3_start_ipa_arp_processing(card); /* go on*/ 901 qeth_l3_start_ipa_source_mac(card); /* go on*/ 902 qeth_l3_start_ipa_vlan(card); /* go on*/ 903 qeth_l3_start_ipa_multicast(card); /* go on*/ 904 qeth_l3_start_ipa_ipv6(card); /* go on*/ 905 qeth_l3_start_ipa_broadcast(card); /* go on*/ 906 } 907 908 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, 909 struct qeth_reply *reply, unsigned long data) 910 { 911 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 912 913 if (cmd->hdr.return_code) 914 return -EIO; 915 if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr)) 916 return -EADDRNOTAVAIL; 917 918 ether_addr_copy(card->dev->dev_addr, 919 cmd->data.create_destroy_addr.mac_addr); 920 return 0; 921 } 922 923 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) 924 { 925 int rc = 0; 926 struct qeth_cmd_buffer *iob; 927 928 QETH_CARD_TEXT(card, 2, "hsrmac"); 929 930 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6, 931 IPA_DATA_SIZEOF(create_destroy_addr)); 932 if (!iob) 933 return -ENOMEM; 934 935 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, 936 NULL); 937 return rc; 938 } 939 940 static int qeth_l3_get_unique_id_cb(struct qeth_card *card, 941 struct qeth_reply *reply, unsigned long data) 942 { 943 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 944 u16 *uid = reply->param; 945 946 if (cmd->hdr.return_code == 0) { 947 *uid = cmd->data.create_destroy_addr.uid; 948 return 0; 949 } 950 951 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n"); 952 return -EIO; 953 } 954 955 static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid) 956 { 957 struct qeth_cmd_buffer *iob; 958 959 QETH_CARD_TEXT(card, 2, "guniqeid"); 960 961 if (!qeth_is_supported(card, IPA_IPV6)) 962 goto out; 963 964 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6, 965 IPA_DATA_SIZEOF(create_destroy_addr)); 966 if (!iob) 967 goto out; 968 969 __ipa_cmd(iob)->data.create_destroy_addr.uid = uid; 970 qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, &uid); 971 972 out: 973 return uid; 974 } 975 976 static int 977 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, 978 unsigned long data) 979 { 980 struct qeth_ipa_cmd *cmd; 981 __u16 rc; 982 983 QETH_CARD_TEXT(card, 2, "diastrcb"); 984 985 cmd = (struct qeth_ipa_cmd *)data; 986 rc = cmd->hdr.return_code; 987 if (rc) 988 QETH_CARD_TEXT_(card, 2, "dxter%x", rc); 989 switch (cmd->data.diagass.action) { 990 case QETH_DIAGS_CMD_TRACE_QUERY: 991 break; 992 case QETH_DIAGS_CMD_TRACE_DISABLE: 993 switch (rc) { 994 case 0: 995 case IPA_RC_INVALID_SUBCMD: 996 card->info.promisc_mode = SET_PROMISC_MODE_OFF; 997 dev_info(&card->gdev->dev, "The HiperSockets network " 998 "traffic analyzer is deactivated\n"); 999 break; 1000 default: 1001 break; 1002 } 1003 break; 1004 case QETH_DIAGS_CMD_TRACE_ENABLE: 1005 switch (rc) { 1006 case 0: 1007 card->info.promisc_mode = SET_PROMISC_MODE_ON; 1008 dev_info(&card->gdev->dev, "The HiperSockets network " 1009 "traffic analyzer is activated\n"); 1010 break; 1011 case IPA_RC_HARDWARE_AUTH_ERROR: 1012 dev_warn(&card->gdev->dev, "The device is not " 1013 "authorized to run as a HiperSockets network " 1014 "traffic analyzer\n"); 1015 break; 1016 case IPA_RC_TRACE_ALREADY_ACTIVE: 1017 dev_warn(&card->gdev->dev, "A HiperSockets " 1018 "network traffic analyzer is already " 1019 "active in the HiperSockets LAN\n"); 1020 break; 1021 default: 1022 break; 1023 } 1024 break; 1025 default: 1026 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n", 1027 cmd->data.diagass.action, CARD_DEVID(card)); 1028 } 1029 1030 return rc ? -EIO : 0; 1031 } 1032 1033 static int 1034 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) 1035 { 1036 struct qeth_cmd_buffer *iob; 1037 struct qeth_ipa_cmd *cmd; 1038 1039 QETH_CARD_TEXT(card, 2, "diagtrac"); 1040 1041 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0); 1042 if (!iob) 1043 return -ENOMEM; 1044 cmd = __ipa_cmd(iob); 1045 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; 1046 cmd->data.diagass.action = diags_cmd; 1047 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL); 1048 } 1049 1050 static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg) 1051 { 1052 struct qeth_card *card = arg; 1053 struct inet6_dev *in6_dev; 1054 struct in_device *in4_dev; 1055 struct qeth_ipaddr *ipm; 1056 struct qeth_ipaddr tmp; 1057 struct ip_mc_list *im4; 1058 struct ifmcaddr6 *im6; 1059 1060 QETH_CARD_TEXT(card, 4, "addmc"); 1061 1062 if (!dev || !(dev->flags & IFF_UP)) 1063 goto out; 1064 1065 in4_dev = __in_dev_get_rtnl(dev); 1066 if (!in4_dev) 1067 goto walk_ipv6; 1068 1069 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); 1070 tmp.disp_flag = QETH_DISP_ADDR_ADD; 1071 tmp.is_multicast = 1; 1072 1073 for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL; 1074 im4 = rtnl_dereference(im4->next_rcu)) { 1075 tmp.u.a4.addr = im4->multiaddr; 1076 1077 ipm = qeth_l3_find_addr_by_ip(card, &tmp); 1078 if (ipm) { 1079 /* for mcast, by-IP match means full match */ 1080 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1081 continue; 1082 } 1083 1084 ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL); 1085 if (!ipm) 1086 continue; 1087 1088 hash_add(card->rx_mode_addrs, &ipm->hnode, 1089 qeth_l3_ipaddr_hash(ipm)); 1090 } 1091 1092 walk_ipv6: 1093 if (!qeth_is_supported(card, IPA_IPV6)) 1094 goto out; 1095 1096 in6_dev = __in6_dev_get(dev); 1097 if (!in6_dev) 1098 goto out; 1099 1100 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 1101 tmp.disp_flag = QETH_DISP_ADDR_ADD; 1102 tmp.is_multicast = 1; 1103 1104 read_lock_bh(&in6_dev->lock); 1105 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { 1106 tmp.u.a6.addr = im6->mca_addr; 1107 1108 ipm = qeth_l3_find_addr_by_ip(card, &tmp); 1109 if (ipm) { 1110 /* for mcast, by-IP match means full match */ 1111 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1112 continue; 1113 } 1114 1115 ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC); 1116 if (!ipm) 1117 continue; 1118 1119 hash_add(card->rx_mode_addrs, &ipm->hnode, 1120 qeth_l3_ipaddr_hash(ipm)); 1121 1122 } 1123 read_unlock_bh(&in6_dev->lock); 1124 1125 out: 1126 return 0; 1127 } 1128 1129 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, 1130 __be16 proto, u16 vid) 1131 { 1132 struct qeth_card *card = dev->ml_priv; 1133 1134 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 1135 return 0; 1136 } 1137 1138 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, 1139 __be16 proto, u16 vid) 1140 { 1141 struct qeth_card *card = dev->ml_priv; 1142 1143 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 1144 return 0; 1145 } 1146 1147 static void qeth_l3_set_promisc_mode(struct qeth_card *card) 1148 { 1149 bool enable = card->dev->flags & IFF_PROMISC; 1150 1151 if (card->info.promisc_mode == enable) 1152 return; 1153 1154 if (IS_VM_NIC(card)) { /* Guestlan trace */ 1155 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1156 qeth_setadp_promisc_mode(card, enable); 1157 } else if (card->options.sniffer && /* HiperSockets trace */ 1158 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 1159 if (enable) { 1160 QETH_CARD_TEXT(card, 3, "+promisc"); 1161 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE); 1162 } else { 1163 QETH_CARD_TEXT(card, 3, "-promisc"); 1164 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1165 } 1166 } 1167 } 1168 1169 static void qeth_l3_rx_mode_work(struct work_struct *work) 1170 { 1171 struct qeth_card *card = container_of(work, struct qeth_card, 1172 rx_mode_work); 1173 struct qeth_ipaddr *addr; 1174 struct hlist_node *tmp; 1175 int i, rc; 1176 1177 QETH_CARD_TEXT(card, 3, "setmulti"); 1178 1179 if (!card->options.sniffer) { 1180 rtnl_lock(); 1181 qeth_l3_add_mcast_rtnl(card->dev, 0, card); 1182 if (qeth_is_supported(card, IPA_FULL_VLAN)) 1183 vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card); 1184 rtnl_unlock(); 1185 1186 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) { 1187 switch (addr->disp_flag) { 1188 case QETH_DISP_ADDR_DELETE: 1189 rc = qeth_l3_deregister_addr_entry(card, addr); 1190 if (!rc || rc == -ENOENT) { 1191 hash_del(&addr->hnode); 1192 kfree(addr); 1193 } 1194 break; 1195 case QETH_DISP_ADDR_ADD: 1196 rc = qeth_l3_register_addr_entry(card, addr); 1197 if (rc && rc != -ENETDOWN) { 1198 hash_del(&addr->hnode); 1199 kfree(addr); 1200 break; 1201 } 1202 fallthrough; 1203 default: 1204 /* for next call to set_rx_mode(): */ 1205 addr->disp_flag = QETH_DISP_ADDR_DELETE; 1206 } 1207 } 1208 } 1209 1210 qeth_l3_set_promisc_mode(card); 1211 } 1212 1213 static int qeth_l3_arp_makerc(u16 rc) 1214 { 1215 switch (rc) { 1216 case IPA_RC_SUCCESS: 1217 return 0; 1218 case QETH_IPA_ARP_RC_NOTSUPP: 1219 case QETH_IPA_ARP_RC_Q_NOTSUPP: 1220 return -EOPNOTSUPP; 1221 case QETH_IPA_ARP_RC_OUT_OF_RANGE: 1222 return -EINVAL; 1223 case QETH_IPA_ARP_RC_Q_NO_DATA: 1224 return -ENOENT; 1225 default: 1226 return -EIO; 1227 } 1228 } 1229 1230 static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply, 1231 unsigned long data) 1232 { 1233 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1234 1235 qeth_setassparms_cb(card, reply, data); 1236 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1237 } 1238 1239 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) 1240 { 1241 struct qeth_cmd_buffer *iob; 1242 int rc; 1243 1244 QETH_CARD_TEXT(card, 3, "arpstnoe"); 1245 1246 /* 1247 * currently GuestLAN only supports the ARP assist function 1248 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; 1249 * thus we say EOPNOTSUPP for this ARP function 1250 */ 1251 if (IS_VM_NIC(card)) 1252 return -EOPNOTSUPP; 1253 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1254 return -EOPNOTSUPP; 1255 } 1256 1257 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1258 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 1259 SETASS_DATA_SIZEOF(flags_32bit), 1260 QETH_PROT_IPV4); 1261 if (!iob) 1262 return -ENOMEM; 1263 1264 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries; 1265 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1266 if (rc) 1267 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n", 1268 CARD_DEVID(card), rc); 1269 return rc; 1270 } 1271 1272 static __u32 get_arp_entry_size(struct qeth_card *card, 1273 struct qeth_arp_query_data *qdata, 1274 struct qeth_arp_entrytype *type, __u8 strip_entries) 1275 { 1276 __u32 rc; 1277 __u8 is_hsi; 1278 1279 is_hsi = qdata->reply_bits == 5; 1280 if (type->ip == QETHARP_IP_ADDR_V4) { 1281 QETH_CARD_TEXT(card, 4, "arpev4"); 1282 if (strip_entries) { 1283 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : 1284 sizeof(struct qeth_arp_qi_entry7_short); 1285 } else { 1286 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : 1287 sizeof(struct qeth_arp_qi_entry7); 1288 } 1289 } else if (type->ip == QETHARP_IP_ADDR_V6) { 1290 QETH_CARD_TEXT(card, 4, "arpev6"); 1291 if (strip_entries) { 1292 rc = is_hsi ? 1293 sizeof(struct qeth_arp_qi_entry5_short_ipv6) : 1294 sizeof(struct qeth_arp_qi_entry7_short_ipv6); 1295 } else { 1296 rc = is_hsi ? 1297 sizeof(struct qeth_arp_qi_entry5_ipv6) : 1298 sizeof(struct qeth_arp_qi_entry7_ipv6); 1299 } 1300 } else { 1301 QETH_CARD_TEXT(card, 4, "arpinv"); 1302 rc = 0; 1303 } 1304 1305 return rc; 1306 } 1307 1308 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) 1309 { 1310 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || 1311 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); 1312 } 1313 1314 static int qeth_l3_arp_query_cb(struct qeth_card *card, 1315 struct qeth_reply *reply, unsigned long data) 1316 { 1317 struct qeth_ipa_cmd *cmd; 1318 struct qeth_arp_query_data *qdata; 1319 struct qeth_arp_query_info *qinfo; 1320 int e; 1321 int entrybytes_done; 1322 int stripped_bytes; 1323 __u8 do_strip_entries; 1324 1325 QETH_CARD_TEXT(card, 3, "arpquecb"); 1326 1327 qinfo = (struct qeth_arp_query_info *) reply->param; 1328 cmd = (struct qeth_ipa_cmd *) data; 1329 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version); 1330 if (cmd->hdr.return_code) { 1331 QETH_CARD_TEXT(card, 4, "arpcberr"); 1332 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1333 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1334 } 1335 if (cmd->data.setassparms.hdr.return_code) { 1336 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 1337 QETH_CARD_TEXT(card, 4, "setaperr"); 1338 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1339 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1340 } 1341 qdata = &cmd->data.setassparms.data.query_arp; 1342 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries); 1343 1344 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; 1345 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; 1346 entrybytes_done = 0; 1347 for (e = 0; e < qdata->no_entries; ++e) { 1348 char *cur_entry; 1349 __u32 esize; 1350 struct qeth_arp_entrytype *etype; 1351 1352 cur_entry = &qdata->data + entrybytes_done; 1353 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; 1354 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) { 1355 QETH_CARD_TEXT(card, 4, "pmis"); 1356 QETH_CARD_TEXT_(card, 4, "%i", etype->ip); 1357 break; 1358 } 1359 esize = get_arp_entry_size(card, qdata, etype, 1360 do_strip_entries); 1361 QETH_CARD_TEXT_(card, 5, "esz%i", esize); 1362 if (!esize) 1363 break; 1364 1365 if ((qinfo->udata_len - qinfo->udata_offset) < esize) { 1366 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC); 1367 memset(qinfo->udata, 0, 4); 1368 return -ENOSPC; 1369 } 1370 1371 memcpy(qinfo->udata + qinfo->udata_offset, 1372 &qdata->data + entrybytes_done + stripped_bytes, 1373 esize); 1374 entrybytes_done += esize + stripped_bytes; 1375 qinfo->udata_offset += esize; 1376 ++qinfo->no_entries; 1377 } 1378 /* check if all replies received ... */ 1379 if (cmd->data.setassparms.hdr.seq_no < 1380 cmd->data.setassparms.hdr.number_of_replies) 1381 return 1; 1382 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries); 1383 memcpy(qinfo->udata, &qinfo->no_entries, 4); 1384 /* keep STRIP_ENTRIES flag so the user program can distinguish 1385 * stripped entries from normal ones */ 1386 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) 1387 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; 1388 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); 1389 QETH_CARD_TEXT_(card, 4, "rc%i", 0); 1390 return 0; 1391 } 1392 1393 static int qeth_l3_query_arp_cache_info(struct qeth_card *card, 1394 enum qeth_prot_versions prot, 1395 struct qeth_arp_query_info *qinfo) 1396 { 1397 struct qeth_cmd_buffer *iob; 1398 struct qeth_ipa_cmd *cmd; 1399 int rc; 1400 1401 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); 1402 1403 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1404 IPA_CMD_ASS_ARP_QUERY_INFO, 1405 SETASS_DATA_SIZEOF(query_arp), prot); 1406 if (!iob) 1407 return -ENOMEM; 1408 cmd = __ipa_cmd(iob); 1409 cmd->data.setassparms.data.query_arp.request_bits = 0x000F; 1410 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo); 1411 if (rc) 1412 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n", 1413 CARD_DEVID(card), rc); 1414 return rc; 1415 } 1416 1417 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) 1418 { 1419 struct qeth_arp_query_info qinfo = {0, }; 1420 int rc; 1421 1422 QETH_CARD_TEXT(card, 3, "arpquery"); 1423 1424 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ 1425 IPA_ARP_PROCESSING)) { 1426 QETH_CARD_TEXT(card, 3, "arpqnsup"); 1427 rc = -EOPNOTSUPP; 1428 goto out; 1429 } 1430 /* get size of userspace buffer and mask_bits -> 6 bytes */ 1431 if (copy_from_user(&qinfo, udata, 6)) { 1432 rc = -EFAULT; 1433 goto out; 1434 } 1435 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 1436 if (!qinfo.udata) { 1437 rc = -ENOMEM; 1438 goto out; 1439 } 1440 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; 1441 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo); 1442 if (rc) { 1443 if (copy_to_user(udata, qinfo.udata, 4)) 1444 rc = -EFAULT; 1445 goto free_and_out; 1446 } 1447 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { 1448 /* fails in case of GuestLAN QDIO mode */ 1449 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo); 1450 } 1451 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) { 1452 QETH_CARD_TEXT(card, 4, "qactf"); 1453 rc = -EFAULT; 1454 goto free_and_out; 1455 } 1456 QETH_CARD_TEXT(card, 4, "qacts"); 1457 1458 free_and_out: 1459 kfree(qinfo.udata); 1460 out: 1461 return rc; 1462 } 1463 1464 static int qeth_l3_arp_modify_entry(struct qeth_card *card, 1465 struct qeth_arp_cache_entry *entry, 1466 enum qeth_arp_process_subcmds arp_cmd) 1467 { 1468 struct qeth_arp_cache_entry *cmd_entry; 1469 struct qeth_cmd_buffer *iob; 1470 int rc; 1471 1472 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY) 1473 QETH_CARD_TEXT(card, 3, "arpadd"); 1474 else 1475 QETH_CARD_TEXT(card, 3, "arpdel"); 1476 1477 /* 1478 * currently GuestLAN only supports the ARP assist function 1479 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; 1480 * thus we say EOPNOTSUPP for this ARP function 1481 */ 1482 if (IS_VM_NIC(card)) 1483 return -EOPNOTSUPP; 1484 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1485 return -EOPNOTSUPP; 1486 } 1487 1488 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd, 1489 SETASS_DATA_SIZEOF(arp_entry), 1490 QETH_PROT_IPV4); 1491 if (!iob) 1492 return -ENOMEM; 1493 1494 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry; 1495 ether_addr_copy(cmd_entry->macaddr, entry->macaddr); 1496 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4); 1497 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1498 if (rc) 1499 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n", 1500 arp_cmd, CARD_DEVID(card), rc); 1501 return rc; 1502 } 1503 1504 static int qeth_l3_arp_flush_cache(struct qeth_card *card) 1505 { 1506 struct qeth_cmd_buffer *iob; 1507 int rc; 1508 1509 QETH_CARD_TEXT(card, 3, "arpflush"); 1510 1511 /* 1512 * currently GuestLAN only supports the ARP assist function 1513 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; 1514 * thus we say EOPNOTSUPP for this ARP function 1515 */ 1516 if (IS_VM_NIC(card) || IS_IQD(card)) 1517 return -EOPNOTSUPP; 1518 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1519 return -EOPNOTSUPP; 1520 } 1521 1522 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1523 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0, 1524 QETH_PROT_IPV4); 1525 if (!iob) 1526 return -ENOMEM; 1527 1528 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1529 if (rc) 1530 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n", 1531 CARD_DEVID(card), rc); 1532 return rc; 1533 } 1534 1535 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 1536 { 1537 struct qeth_card *card = dev->ml_priv; 1538 struct qeth_arp_cache_entry arp_entry; 1539 enum qeth_arp_process_subcmds arp_cmd; 1540 int rc = 0; 1541 1542 switch (cmd) { 1543 case SIOC_QETH_ARP_SET_NO_ENTRIES: 1544 if (!capable(CAP_NET_ADMIN)) { 1545 rc = -EPERM; 1546 break; 1547 } 1548 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); 1549 break; 1550 case SIOC_QETH_ARP_QUERY_INFO: 1551 if (!capable(CAP_NET_ADMIN)) { 1552 rc = -EPERM; 1553 break; 1554 } 1555 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data); 1556 break; 1557 case SIOC_QETH_ARP_ADD_ENTRY: 1558 case SIOC_QETH_ARP_REMOVE_ENTRY: 1559 if (!capable(CAP_NET_ADMIN)) 1560 return -EPERM; 1561 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry))) 1562 return -EFAULT; 1563 1564 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ? 1565 IPA_CMD_ASS_ARP_ADD_ENTRY : 1566 IPA_CMD_ASS_ARP_REMOVE_ENTRY; 1567 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd); 1568 case SIOC_QETH_ARP_FLUSH_CACHE: 1569 if (!capable(CAP_NET_ADMIN)) { 1570 rc = -EPERM; 1571 break; 1572 } 1573 rc = qeth_l3_arp_flush_cache(card); 1574 break; 1575 default: 1576 rc = -EOPNOTSUPP; 1577 } 1578 return rc; 1579 } 1580 1581 static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst, 1582 int ipv) 1583 { 1584 struct neighbour *n = NULL; 1585 1586 if (dst) 1587 n = dst_neigh_lookup_skb(dst, skb); 1588 1589 if (n) { 1590 int cast_type = n->type; 1591 1592 neigh_release(n); 1593 if ((cast_type == RTN_BROADCAST) || 1594 (cast_type == RTN_MULTICAST) || 1595 (cast_type == RTN_ANYCAST)) 1596 return cast_type; 1597 return RTN_UNICAST; 1598 } 1599 1600 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */ 1601 switch (ipv) { 1602 case 4: 1603 if (ipv4_is_lbcast(ip_hdr(skb)->daddr)) 1604 return RTN_BROADCAST; 1605 return ipv4_is_multicast(ip_hdr(skb)->daddr) ? 1606 RTN_MULTICAST : RTN_UNICAST; 1607 case 6: 1608 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ? 1609 RTN_MULTICAST : RTN_UNICAST; 1610 default: 1611 /* ... and MAC address */ 1612 return qeth_get_ether_cast_type(skb); 1613 } 1614 } 1615 1616 static int qeth_l3_get_cast_type(struct sk_buff *skb) 1617 { 1618 int ipv = qeth_get_ip_version(skb); 1619 struct dst_entry *dst; 1620 int cast_type; 1621 1622 rcu_read_lock(); 1623 dst = qeth_dst_check_rcu(skb, ipv); 1624 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv); 1625 rcu_read_unlock(); 1626 1627 return cast_type; 1628 } 1629 1630 static u8 qeth_l3_cast_type_to_flag(int cast_type) 1631 { 1632 if (cast_type == RTN_MULTICAST) 1633 return QETH_CAST_MULTICAST; 1634 if (cast_type == RTN_ANYCAST) 1635 return QETH_CAST_ANYCAST; 1636 if (cast_type == RTN_BROADCAST) 1637 return QETH_CAST_BROADCAST; 1638 return QETH_CAST_UNICAST; 1639 } 1640 1641 static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue, 1642 struct qeth_hdr *hdr, struct sk_buff *skb, 1643 int ipv, unsigned int data_len) 1644 { 1645 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3; 1646 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 1647 struct qeth_card *card = queue->card; 1648 struct dst_entry *dst; 1649 int cast_type; 1650 1651 hdr->hdr.l3.length = data_len; 1652 1653 if (skb_is_gso(skb)) { 1654 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO; 1655 } else { 1656 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 1657 1658 if (skb->protocol == htons(ETH_P_AF_IUCV)) { 1659 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST; 1660 l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80); 1661 memcpy(&l3_hdr->next_hop.addr.s6_addr32[2], 1662 iucv_trans_hdr(skb)->destUserID, 8); 1663 return; 1664 } 1665 1666 if (skb->ip_summed == CHECKSUM_PARTIAL) { 1667 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv); 1668 /* some HW requires combined L3+L4 csum offload: */ 1669 if (ipv == 4) 1670 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ; 1671 } 1672 } 1673 1674 if (ipv == 4 || IS_IQD(card)) { 1675 /* NETIF_F_HW_VLAN_CTAG_TX */ 1676 if (skb_vlan_tag_present(skb)) { 1677 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME; 1678 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); 1679 } 1680 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) { 1681 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG; 1682 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); 1683 } 1684 1685 rcu_read_lock(); 1686 dst = qeth_dst_check_rcu(skb, ipv); 1687 1688 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ) 1689 cast_type = RTN_UNICAST; 1690 else 1691 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv); 1692 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type); 1693 1694 if (ipv == 4) { 1695 l3_hdr->next_hop.addr.s6_addr32[3] = 1696 qeth_next_hop_v4_rcu(skb, dst); 1697 } else if (ipv == 6) { 1698 l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst); 1699 1700 hdr->hdr.l3.flags |= QETH_HDR_IPV6; 1701 if (!IS_IQD(card)) 1702 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU; 1703 } else { 1704 /* OSA only: */ 1705 l3_hdr->flags |= QETH_HDR_PASSTHRU; 1706 } 1707 rcu_read_unlock(); 1708 } 1709 1710 static void qeth_l3_fixup_headers(struct sk_buff *skb) 1711 { 1712 struct iphdr *iph = ip_hdr(skb); 1713 1714 /* this is safe, IPv6 traffic takes a different path */ 1715 if (skb->ip_summed == CHECKSUM_PARTIAL) 1716 iph->check = 0; 1717 if (skb_is_gso(skb)) { 1718 iph->tot_len = 0; 1719 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr, 1720 iph->daddr, 0); 1721 } 1722 } 1723 1724 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb, 1725 struct qeth_qdio_out_q *queue, int ipv) 1726 { 1727 unsigned int hw_hdr_len; 1728 int rc; 1729 1730 /* re-use the L2 header area for the HW header: */ 1731 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) : 1732 sizeof(struct qeth_hdr); 1733 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN); 1734 if (rc) 1735 return rc; 1736 skb_pull(skb, ETH_HLEN); 1737 1738 qeth_l3_fixup_headers(skb); 1739 return qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header); 1740 } 1741 1742 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, 1743 struct net_device *dev) 1744 { 1745 struct qeth_card *card = dev->ml_priv; 1746 u16 txq = skb_get_queue_mapping(skb); 1747 int ipv = qeth_get_ip_version(skb); 1748 struct qeth_qdio_out_q *queue; 1749 int rc; 1750 1751 if (!skb_is_gso(skb)) 1752 qdisc_skb_cb(skb)->pkt_len = skb->len; 1753 if (IS_IQD(card)) { 1754 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)]; 1755 1756 if (card->options.sniffer) 1757 goto tx_drop; 1758 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) || 1759 (card->options.cq == QETH_CQ_ENABLED && 1760 skb->protocol != htons(ETH_P_AF_IUCV))) 1761 goto tx_drop; 1762 } else { 1763 queue = card->qdio.out_qs[txq]; 1764 } 1765 1766 if (!(dev->flags & IFF_BROADCAST) && 1767 qeth_l3_get_cast_type(skb) == RTN_BROADCAST) 1768 goto tx_drop; 1769 1770 if (ipv == 4 || IS_IQD(card)) 1771 rc = qeth_l3_xmit(card, skb, queue, ipv); 1772 else 1773 rc = qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header); 1774 1775 if (!rc) 1776 return NETDEV_TX_OK; 1777 1778 tx_drop: 1779 QETH_TXQ_STAT_INC(queue, tx_dropped); 1780 kfree_skb(skb); 1781 return NETDEV_TX_OK; 1782 } 1783 1784 static void qeth_l3_set_rx_mode(struct net_device *dev) 1785 { 1786 struct qeth_card *card = dev->ml_priv; 1787 1788 schedule_work(&card->rx_mode_work); 1789 } 1790 1791 /* 1792 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting 1793 * NOARP on the netdevice is no option because it also turns off neighbor 1794 * solicitation. For IPv4 we install a neighbor_setup function. We don't want 1795 * arp resolution but we want the hard header (packet socket will work 1796 * e.g. tcpdump) 1797 */ 1798 static int qeth_l3_neigh_setup_noarp(struct neighbour *n) 1799 { 1800 n->nud_state = NUD_NOARP; 1801 memcpy(n->ha, "FAKELL", 6); 1802 n->output = n->ops->connected_output; 1803 return 0; 1804 } 1805 1806 static int 1807 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) 1808 { 1809 if (np->tbl->family == AF_INET) 1810 np->neigh_setup = qeth_l3_neigh_setup_noarp; 1811 1812 return 0; 1813 } 1814 1815 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb, 1816 struct net_device *dev, 1817 netdev_features_t features) 1818 { 1819 if (qeth_get_ip_version(skb) != 4) 1820 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 1821 return qeth_features_check(skb, dev, features); 1822 } 1823 1824 static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 1825 struct net_device *sb_dev) 1826 { 1827 return qeth_iqd_select_queue(dev, skb, qeth_l3_get_cast_type(skb), 1828 sb_dev); 1829 } 1830 1831 static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb, 1832 struct net_device *sb_dev) 1833 { 1834 struct qeth_card *card = dev->ml_priv; 1835 1836 if (qeth_uses_tx_prio_queueing(card)) 1837 return qeth_get_priority_queue(card, skb); 1838 1839 return netdev_pick_tx(dev, skb, sb_dev); 1840 } 1841 1842 static const struct net_device_ops qeth_l3_netdev_ops = { 1843 .ndo_open = qeth_open, 1844 .ndo_stop = qeth_stop, 1845 .ndo_get_stats64 = qeth_get_stats64, 1846 .ndo_start_xmit = qeth_l3_hard_start_xmit, 1847 .ndo_select_queue = qeth_l3_iqd_select_queue, 1848 .ndo_validate_addr = eth_validate_addr, 1849 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 1850 .ndo_do_ioctl = qeth_do_ioctl, 1851 .ndo_fix_features = qeth_fix_features, 1852 .ndo_set_features = qeth_set_features, 1853 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 1854 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 1855 .ndo_tx_timeout = qeth_tx_timeout, 1856 }; 1857 1858 static const struct net_device_ops qeth_l3_osa_netdev_ops = { 1859 .ndo_open = qeth_open, 1860 .ndo_stop = qeth_stop, 1861 .ndo_get_stats64 = qeth_get_stats64, 1862 .ndo_start_xmit = qeth_l3_hard_start_xmit, 1863 .ndo_features_check = qeth_l3_osa_features_check, 1864 .ndo_select_queue = qeth_l3_osa_select_queue, 1865 .ndo_validate_addr = eth_validate_addr, 1866 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 1867 .ndo_do_ioctl = qeth_do_ioctl, 1868 .ndo_fix_features = qeth_fix_features, 1869 .ndo_set_features = qeth_set_features, 1870 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 1871 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 1872 .ndo_tx_timeout = qeth_tx_timeout, 1873 .ndo_neigh_setup = qeth_l3_neigh_setup, 1874 }; 1875 1876 static int qeth_l3_setup_netdev(struct qeth_card *card) 1877 { 1878 struct net_device *dev = card->dev; 1879 unsigned int headroom; 1880 int rc; 1881 1882 if (IS_OSD(card) || IS_OSX(card)) { 1883 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; 1884 1885 /*IPv6 address autoconfiguration stuff*/ 1886 dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id); 1887 1888 if (!IS_VM_NIC(card)) { 1889 card->dev->features |= NETIF_F_SG; 1890 card->dev->hw_features |= NETIF_F_TSO | 1891 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 1892 card->dev->vlan_features |= NETIF_F_TSO | 1893 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 1894 } 1895 1896 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 1897 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 1898 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 1899 } 1900 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 1901 card->dev->hw_features |= NETIF_F_TSO6; 1902 card->dev->vlan_features |= NETIF_F_TSO6; 1903 } 1904 1905 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */ 1906 if (card->dev->hw_features & NETIF_F_TSO6) 1907 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN; 1908 else if (card->dev->hw_features & NETIF_F_TSO) 1909 headroom = sizeof(struct qeth_hdr_tso); 1910 else 1911 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN; 1912 } else if (IS_IQD(card)) { 1913 card->dev->flags |= IFF_NOARP; 1914 card->dev->netdev_ops = &qeth_l3_netdev_ops; 1915 headroom = sizeof(struct qeth_hdr) - ETH_HLEN; 1916 1917 rc = qeth_l3_iqd_read_initial_mac(card); 1918 if (rc) 1919 return rc; 1920 } else 1921 return -ENODEV; 1922 1923 card->dev->needed_headroom = headroom; 1924 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 1925 NETIF_F_HW_VLAN_CTAG_RX | 1926 NETIF_F_HW_VLAN_CTAG_FILTER; 1927 1928 netif_keep_dst(card->dev); 1929 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) 1930 netif_set_gso_max_size(card->dev, 1931 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1)); 1932 1933 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 1934 return register_netdev(card->dev); 1935 } 1936 1937 static const struct device_type qeth_l3_devtype = { 1938 .name = "qeth_layer3", 1939 .groups = qeth_l3_attr_groups, 1940 }; 1941 1942 static int qeth_l3_probe_device(struct ccwgroup_device *gdev) 1943 { 1944 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1945 int rc; 1946 1947 hash_init(card->ip_htable); 1948 mutex_init(&card->ip_lock); 1949 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0, 1950 dev_name(&gdev->dev)); 1951 if (!card->cmd_wq) 1952 return -ENOMEM; 1953 1954 if (gdev->dev.type == &qeth_generic_devtype) { 1955 rc = qeth_l3_create_device_attributes(&gdev->dev); 1956 if (rc) { 1957 destroy_workqueue(card->cmd_wq); 1958 return rc; 1959 } 1960 } 1961 1962 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work); 1963 return 0; 1964 } 1965 1966 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) 1967 { 1968 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1969 1970 if (cgdev->dev.type == &qeth_generic_devtype) 1971 qeth_l3_remove_device_attributes(&cgdev->dev); 1972 1973 qeth_set_allowed_threads(card, 0, 1); 1974 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1975 1976 if (cgdev->state == CCWGROUP_ONLINE) 1977 qeth_set_offline(card, false); 1978 1979 cancel_work_sync(&card->close_dev_work); 1980 if (card->dev->reg_state == NETREG_REGISTERED) 1981 unregister_netdev(card->dev); 1982 1983 flush_workqueue(card->cmd_wq); 1984 destroy_workqueue(card->cmd_wq); 1985 qeth_l3_clear_ip_htable(card, 0); 1986 qeth_l3_clear_ipato_list(card); 1987 } 1988 1989 static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok) 1990 { 1991 struct net_device *dev = card->dev; 1992 int rc = 0; 1993 1994 /* softsetup */ 1995 QETH_CARD_TEXT(card, 2, "softsetp"); 1996 1997 rc = qeth_l3_setadapter_parms(card); 1998 if (rc) 1999 QETH_CARD_TEXT_(card, 2, "2err%04x", rc); 2000 if (!card->options.sniffer) { 2001 qeth_l3_start_ipassists(card); 2002 2003 rc = qeth_l3_setrouting_v4(card); 2004 if (rc) 2005 QETH_CARD_TEXT_(card, 2, "4err%04x", rc); 2006 rc = qeth_l3_setrouting_v6(card); 2007 if (rc) 2008 QETH_CARD_TEXT_(card, 2, "5err%04x", rc); 2009 } 2010 2011 card->state = CARD_STATE_SOFTSETUP; 2012 2013 qeth_set_allowed_threads(card, 0xffffffff, 0); 2014 qeth_l3_recover_ip(card); 2015 2016 if (dev->reg_state != NETREG_REGISTERED) { 2017 rc = qeth_l3_setup_netdev(card); 2018 if (rc) 2019 goto err_setup; 2020 2021 if (carrier_ok) 2022 netif_carrier_on(dev); 2023 } else { 2024 rtnl_lock(); 2025 rc = qeth_set_real_num_tx_queues(card, 2026 qeth_tx_actual_queues(card)); 2027 if (rc) { 2028 rtnl_unlock(); 2029 goto err_set_queues; 2030 } 2031 2032 if (carrier_ok) 2033 netif_carrier_on(dev); 2034 else 2035 netif_carrier_off(dev); 2036 2037 netif_device_attach(dev); 2038 qeth_enable_hw_features(dev); 2039 2040 if (card->info.open_when_online) { 2041 card->info.open_when_online = 0; 2042 dev_open(dev, NULL); 2043 } 2044 rtnl_unlock(); 2045 } 2046 return 0; 2047 2048 err_set_queues: 2049 err_setup: 2050 qeth_set_allowed_threads(card, 0, 1); 2051 card->state = CARD_STATE_DOWN; 2052 qeth_l3_clear_ip_htable(card, 1); 2053 return rc; 2054 } 2055 2056 static void qeth_l3_set_offline(struct qeth_card *card) 2057 { 2058 qeth_set_allowed_threads(card, 0, 1); 2059 qeth_l3_drain_rx_mode_cache(card); 2060 2061 if (card->options.sniffer && 2062 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) 2063 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 2064 2065 if (card->state == CARD_STATE_SOFTSETUP) { 2066 card->state = CARD_STATE_DOWN; 2067 qeth_l3_clear_ip_htable(card, 1); 2068 } 2069 } 2070 2071 /* Returns zero if the command is successfully "consumed" */ 2072 static int qeth_l3_control_event(struct qeth_card *card, 2073 struct qeth_ipa_cmd *cmd) 2074 { 2075 return 1; 2076 } 2077 2078 const struct qeth_discipline qeth_l3_discipline = { 2079 .devtype = &qeth_l3_devtype, 2080 .setup = qeth_l3_probe_device, 2081 .remove = qeth_l3_remove_device, 2082 .set_online = qeth_l3_set_online, 2083 .set_offline = qeth_l3_set_offline, 2084 .do_ioctl = qeth_l3_do_ioctl, 2085 .control_event_handler = qeth_l3_control_event, 2086 }; 2087 EXPORT_SYMBOL_GPL(qeth_l3_discipline); 2088 2089 static int qeth_l3_handle_ip_event(struct qeth_card *card, 2090 struct qeth_ipaddr *addr, 2091 unsigned long event) 2092 { 2093 switch (event) { 2094 case NETDEV_UP: 2095 qeth_l3_modify_ip(card, addr, true); 2096 return NOTIFY_OK; 2097 case NETDEV_DOWN: 2098 qeth_l3_modify_ip(card, addr, false); 2099 return NOTIFY_OK; 2100 default: 2101 return NOTIFY_DONE; 2102 } 2103 } 2104 2105 struct qeth_l3_ip_event_work { 2106 struct work_struct work; 2107 struct qeth_card *card; 2108 struct qeth_ipaddr addr; 2109 }; 2110 2111 #define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work) 2112 2113 static void qeth_l3_add_ip_worker(struct work_struct *work) 2114 { 2115 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); 2116 2117 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true); 2118 kfree(work); 2119 } 2120 2121 static void qeth_l3_delete_ip_worker(struct work_struct *work) 2122 { 2123 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); 2124 2125 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false); 2126 kfree(work); 2127 } 2128 2129 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) 2130 { 2131 if (is_vlan_dev(dev)) 2132 dev = vlan_dev_real_dev(dev); 2133 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops || 2134 dev->netdev_ops == &qeth_l3_netdev_ops) 2135 return (struct qeth_card *) dev->ml_priv; 2136 return NULL; 2137 } 2138 2139 static int qeth_l3_ip_event(struct notifier_block *this, 2140 unsigned long event, void *ptr) 2141 { 2142 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 2143 struct net_device *dev = ifa->ifa_dev->dev; 2144 struct qeth_ipaddr addr; 2145 struct qeth_card *card; 2146 2147 card = qeth_l3_get_card_from_dev(dev); 2148 if (!card) 2149 return NOTIFY_DONE; 2150 QETH_CARD_TEXT(card, 3, "ipevent"); 2151 2152 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); 2153 addr.u.a4.addr = ifa->ifa_address; 2154 addr.u.a4.mask = ifa->ifa_mask; 2155 2156 return qeth_l3_handle_ip_event(card, &addr, event); 2157 } 2158 2159 static struct notifier_block qeth_l3_ip_notifier = { 2160 qeth_l3_ip_event, 2161 NULL, 2162 }; 2163 2164 static int qeth_l3_ip6_event(struct notifier_block *this, 2165 unsigned long event, void *ptr) 2166 { 2167 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 2168 struct net_device *dev = ifa->idev->dev; 2169 struct qeth_l3_ip_event_work *ip_work; 2170 struct qeth_card *card; 2171 2172 if (event != NETDEV_UP && event != NETDEV_DOWN) 2173 return NOTIFY_DONE; 2174 2175 card = qeth_l3_get_card_from_dev(dev); 2176 if (!card) 2177 return NOTIFY_DONE; 2178 QETH_CARD_TEXT(card, 3, "ip6event"); 2179 if (!qeth_is_supported(card, IPA_IPV6)) 2180 return NOTIFY_DONE; 2181 2182 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC); 2183 if (!ip_work) 2184 return NOTIFY_DONE; 2185 2186 if (event == NETDEV_UP) 2187 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker); 2188 else 2189 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker); 2190 2191 ip_work->card = card; 2192 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL, 2193 QETH_PROT_IPV6); 2194 ip_work->addr.u.a6.addr = ifa->addr; 2195 ip_work->addr.u.a6.pfxlen = ifa->prefix_len; 2196 2197 queue_work(card->cmd_wq, &ip_work->work); 2198 return NOTIFY_OK; 2199 } 2200 2201 static struct notifier_block qeth_l3_ip6_notifier = { 2202 qeth_l3_ip6_event, 2203 NULL, 2204 }; 2205 2206 static int qeth_l3_register_notifiers(void) 2207 { 2208 int rc; 2209 2210 QETH_DBF_TEXT(SETUP, 5, "regnotif"); 2211 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); 2212 if (rc) 2213 return rc; 2214 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); 2215 if (rc) { 2216 unregister_inetaddr_notifier(&qeth_l3_ip_notifier); 2217 return rc; 2218 } 2219 return 0; 2220 } 2221 2222 static void qeth_l3_unregister_notifiers(void) 2223 { 2224 QETH_DBF_TEXT(SETUP, 5, "unregnot"); 2225 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); 2226 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); 2227 } 2228 2229 static int __init qeth_l3_init(void) 2230 { 2231 pr_info("register layer 3 discipline\n"); 2232 return qeth_l3_register_notifiers(); 2233 } 2234 2235 static void __exit qeth_l3_exit(void) 2236 { 2237 qeth_l3_unregister_notifiers(); 2238 pr_info("unregister layer 3 discipline\n"); 2239 } 2240 2241 module_init(qeth_l3_init); 2242 module_exit(qeth_l3_exit); 2243 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2244 MODULE_DESCRIPTION("qeth layer 3 discipline"); 2245 MODULE_LICENSE("GPL"); 2246