1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2007, 2009 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #define KMSG_COMPONENT "qeth" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/bitops.h> 16 #include <linux/string.h> 17 #include <linux/errno.h> 18 #include <linux/kernel.h> 19 #include <linux/etherdevice.h> 20 #include <linux/ip.h> 21 #include <linux/in.h> 22 #include <linux/ipv6.h> 23 #include <linux/inetdevice.h> 24 #include <linux/igmp.h> 25 #include <linux/slab.h> 26 #include <linux/if_ether.h> 27 #include <linux/if_vlan.h> 28 #include <linux/skbuff.h> 29 30 #include <net/ip.h> 31 #include <net/arp.h> 32 #include <net/route.h> 33 #include <net/ipv6.h> 34 #include <net/ip6_route.h> 35 #include <net/ip6_fib.h> 36 #include <net/iucv/af_iucv.h> 37 #include <linux/hashtable.h> 38 39 #include "qeth_l3.h" 40 41 42 static int qeth_l3_set_offline(struct ccwgroup_device *); 43 static int qeth_l3_stop(struct net_device *); 44 static void qeth_l3_set_rx_mode(struct net_device *dev); 45 static int qeth_l3_register_addr_entry(struct qeth_card *, 46 struct qeth_ipaddr *); 47 static int qeth_l3_deregister_addr_entry(struct qeth_card *, 48 struct qeth_ipaddr *); 49 50 static void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf) 51 { 52 sprintf(buf, "%pI4", addr); 53 } 54 55 static void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf) 56 { 57 sprintf(buf, "%pI6", addr); 58 } 59 60 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr, 61 char *buf) 62 { 63 if (proto == QETH_PROT_IPV4) 64 qeth_l3_ipaddr4_to_string(addr, buf); 65 else if (proto == QETH_PROT_IPV6) 66 qeth_l3_ipaddr6_to_string(addr, buf); 67 } 68 69 static struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions prot) 70 { 71 struct qeth_ipaddr *addr = kmalloc(sizeof(*addr), GFP_ATOMIC); 72 73 if (addr) 74 qeth_l3_init_ipaddr(addr, QETH_IP_TYPE_NORMAL, prot); 75 return addr; 76 } 77 78 static struct qeth_ipaddr *qeth_l3_find_addr_by_ip(struct qeth_card *card, 79 struct qeth_ipaddr *query) 80 { 81 u64 key = qeth_l3_ipaddr_hash(query); 82 struct qeth_ipaddr *addr; 83 84 if (query->is_multicast) { 85 hash_for_each_possible(card->ip_mc_htable, addr, hnode, key) 86 if (qeth_l3_addr_match_ip(addr, query)) 87 return addr; 88 } else { 89 hash_for_each_possible(card->ip_htable, addr, hnode, key) 90 if (qeth_l3_addr_match_ip(addr, query)) 91 return addr; 92 } 93 return NULL; 94 } 95 96 static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len) 97 { 98 int i, j; 99 u8 octet; 100 101 for (i = 0; i < len; ++i) { 102 octet = addr[i]; 103 for (j = 7; j >= 0; --j) { 104 bits[i*8 + j] = octet & 1; 105 octet >>= 1; 106 } 107 } 108 } 109 110 static bool qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, 111 struct qeth_ipaddr *addr) 112 { 113 struct qeth_ipato_entry *ipatoe; 114 u8 addr_bits[128] = {0, }; 115 u8 ipatoe_bits[128] = {0, }; 116 int rc = 0; 117 118 if (!card->ipato.enabled) 119 return false; 120 if (addr->type != QETH_IP_TYPE_NORMAL) 121 return false; 122 123 qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits, 124 (addr->proto == QETH_PROT_IPV4)? 4:16); 125 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 126 if (addr->proto != ipatoe->proto) 127 continue; 128 qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits, 129 (ipatoe->proto == QETH_PROT_IPV4) ? 130 4 : 16); 131 if (addr->proto == QETH_PROT_IPV4) 132 rc = !memcmp(addr_bits, ipatoe_bits, 133 min(32, ipatoe->mask_bits)); 134 else 135 rc = !memcmp(addr_bits, ipatoe_bits, 136 min(128, ipatoe->mask_bits)); 137 if (rc) 138 break; 139 } 140 /* invert? */ 141 if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4) 142 rc = !rc; 143 else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6) 144 rc = !rc; 145 146 return rc; 147 } 148 149 static int qeth_l3_delete_ip(struct qeth_card *card, 150 struct qeth_ipaddr *tmp_addr) 151 { 152 int rc = 0; 153 struct qeth_ipaddr *addr; 154 155 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 156 QETH_CARD_TEXT(card, 2, "delrxip"); 157 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 158 QETH_CARD_TEXT(card, 2, "delvipa"); 159 else 160 QETH_CARD_TEXT(card, 2, "delip"); 161 162 if (tmp_addr->proto == QETH_PROT_IPV4) 163 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 164 else { 165 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 166 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 167 } 168 169 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 170 if (!addr || !qeth_l3_addr_match_all(addr, tmp_addr)) 171 return -ENOENT; 172 173 addr->ref_counter--; 174 if (addr->type == QETH_IP_TYPE_NORMAL && addr->ref_counter > 0) 175 return rc; 176 if (addr->in_progress) 177 return -EINPROGRESS; 178 179 if (qeth_card_hw_is_reachable(card)) 180 rc = qeth_l3_deregister_addr_entry(card, addr); 181 182 hash_del(&addr->hnode); 183 kfree(addr); 184 185 return rc; 186 } 187 188 static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *tmp_addr) 189 { 190 int rc = 0; 191 struct qeth_ipaddr *addr; 192 char buf[40]; 193 194 if (tmp_addr->type == QETH_IP_TYPE_RXIP) 195 QETH_CARD_TEXT(card, 2, "addrxip"); 196 else if (tmp_addr->type == QETH_IP_TYPE_VIPA) 197 QETH_CARD_TEXT(card, 2, "addvipa"); 198 else 199 QETH_CARD_TEXT(card, 2, "addip"); 200 201 if (tmp_addr->proto == QETH_PROT_IPV4) 202 QETH_CARD_HEX(card, 4, &tmp_addr->u.a4.addr, 4); 203 else { 204 QETH_CARD_HEX(card, 4, &tmp_addr->u.a6.addr, 8); 205 QETH_CARD_HEX(card, 4, ((char *)&tmp_addr->u.a6.addr) + 8, 8); 206 } 207 208 addr = qeth_l3_find_addr_by_ip(card, tmp_addr); 209 if (addr) { 210 if (tmp_addr->type != QETH_IP_TYPE_NORMAL) 211 return -EADDRINUSE; 212 if (qeth_l3_addr_match_all(addr, tmp_addr)) { 213 addr->ref_counter++; 214 return 0; 215 } 216 qeth_l3_ipaddr_to_string(tmp_addr->proto, (u8 *)&tmp_addr->u, 217 buf); 218 dev_warn(&card->gdev->dev, 219 "Registering IP address %s failed\n", buf); 220 return -EADDRINUSE; 221 } else { 222 addr = qeth_l3_get_addr_buffer(tmp_addr->proto); 223 if (!addr) 224 return -ENOMEM; 225 226 memcpy(addr, tmp_addr, sizeof(struct qeth_ipaddr)); 227 addr->ref_counter = 1; 228 229 if (qeth_l3_is_addr_covered_by_ipato(card, addr)) { 230 QETH_CARD_TEXT(card, 2, "tkovaddr"); 231 addr->ipato = 1; 232 } 233 hash_add(card->ip_htable, &addr->hnode, 234 qeth_l3_ipaddr_hash(addr)); 235 236 if (!qeth_card_hw_is_reachable(card)) { 237 addr->disp_flag = QETH_DISP_ADDR_ADD; 238 return 0; 239 } 240 241 /* qeth_l3_register_addr_entry can go to sleep 242 * if we add a IPV4 addr. It is caused by the reason 243 * that SETIP ipa cmd starts ARP staff for IPV4 addr. 244 * Thus we should unlock spinlock, and make a protection 245 * using in_progress variable to indicate that there is 246 * an hardware operation with this IPV4 address 247 */ 248 if (addr->proto == QETH_PROT_IPV4) { 249 addr->in_progress = 1; 250 spin_unlock_bh(&card->ip_lock); 251 rc = qeth_l3_register_addr_entry(card, addr); 252 spin_lock_bh(&card->ip_lock); 253 addr->in_progress = 0; 254 } else 255 rc = qeth_l3_register_addr_entry(card, addr); 256 257 if (!rc || (rc == IPA_RC_DUPLICATE_IP_ADDRESS) || 258 (rc == IPA_RC_LAN_OFFLINE)) { 259 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 260 if (addr->ref_counter < 1) { 261 qeth_l3_deregister_addr_entry(card, addr); 262 hash_del(&addr->hnode); 263 kfree(addr); 264 } 265 } else { 266 hash_del(&addr->hnode); 267 kfree(addr); 268 } 269 } 270 return rc; 271 } 272 273 static void qeth_l3_clear_ip_htable(struct qeth_card *card, int recover) 274 { 275 struct qeth_ipaddr *addr; 276 struct hlist_node *tmp; 277 int i; 278 279 QETH_CARD_TEXT(card, 4, "clearip"); 280 281 spin_lock_bh(&card->ip_lock); 282 283 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 284 if (!recover) { 285 hash_del(&addr->hnode); 286 kfree(addr); 287 continue; 288 } 289 addr->disp_flag = QETH_DISP_ADDR_ADD; 290 } 291 292 spin_unlock_bh(&card->ip_lock); 293 294 spin_lock_bh(&card->mclock); 295 296 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 297 hash_del(&addr->hnode); 298 kfree(addr); 299 } 300 301 spin_unlock_bh(&card->mclock); 302 303 304 } 305 static void qeth_l3_recover_ip(struct qeth_card *card) 306 { 307 struct qeth_ipaddr *addr; 308 struct hlist_node *tmp; 309 int i; 310 int rc; 311 312 QETH_CARD_TEXT(card, 4, "recovrip"); 313 314 spin_lock_bh(&card->ip_lock); 315 316 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 317 if (addr->disp_flag == QETH_DISP_ADDR_ADD) { 318 if (addr->proto == QETH_PROT_IPV4) { 319 addr->in_progress = 1; 320 spin_unlock_bh(&card->ip_lock); 321 rc = qeth_l3_register_addr_entry(card, addr); 322 spin_lock_bh(&card->ip_lock); 323 addr->in_progress = 0; 324 } else 325 rc = qeth_l3_register_addr_entry(card, addr); 326 327 if (!rc) { 328 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 329 if (addr->ref_counter < 1) 330 qeth_l3_delete_ip(card, addr); 331 } else { 332 hash_del(&addr->hnode); 333 kfree(addr); 334 } 335 } 336 } 337 338 spin_unlock_bh(&card->ip_lock); 339 340 } 341 342 static int qeth_l3_send_setdelmc(struct qeth_card *card, 343 struct qeth_ipaddr *addr, int ipacmd) 344 { 345 int rc; 346 struct qeth_cmd_buffer *iob; 347 struct qeth_ipa_cmd *cmd; 348 349 QETH_CARD_TEXT(card, 4, "setdelmc"); 350 351 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 352 if (!iob) 353 return -ENOMEM; 354 cmd = __ipa_cmd(iob); 355 ether_addr_copy(cmd->data.setdelipm.mac, addr->mac); 356 if (addr->proto == QETH_PROT_IPV6) 357 memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr, 358 sizeof(struct in6_addr)); 359 else 360 memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4); 361 362 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 363 364 return rc; 365 } 366 367 static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len) 368 { 369 int i, j; 370 for (i = 0; i < 16; i++) { 371 j = (len) - (i * 8); 372 if (j >= 8) 373 netmask[i] = 0xff; 374 else if (j > 0) 375 netmask[i] = (u8)(0xFF00 >> j); 376 else 377 netmask[i] = 0; 378 } 379 } 380 381 static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set) 382 { 383 switch (addr->type) { 384 case QETH_IP_TYPE_RXIP: 385 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 386 case QETH_IP_TYPE_VIPA: 387 return (set) ? QETH_IPA_SETIP_VIPA_FLAG : 388 QETH_IPA_DELIP_VIPA_FLAG; 389 default: 390 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 391 } 392 } 393 394 static int qeth_l3_send_setdelip(struct qeth_card *card, 395 struct qeth_ipaddr *addr, 396 enum qeth_ipa_cmds ipacmd) 397 { 398 struct qeth_cmd_buffer *iob; 399 struct qeth_ipa_cmd *cmd; 400 __u8 netmask[16]; 401 u32 flags; 402 403 QETH_CARD_TEXT(card, 4, "setdelip"); 404 405 iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); 406 if (!iob) 407 return -ENOMEM; 408 cmd = __ipa_cmd(iob); 409 410 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP); 411 QETH_CARD_TEXT_(card, 4, "flags%02X", flags); 412 413 if (addr->proto == QETH_PROT_IPV6) { 414 memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr, 415 sizeof(struct in6_addr)); 416 qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen); 417 memcpy(cmd->data.setdelip6.mask, netmask, 418 sizeof(struct in6_addr)); 419 cmd->data.setdelip6.flags = flags; 420 } else { 421 memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4); 422 memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4); 423 cmd->data.setdelip4.flags = flags; 424 } 425 426 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 427 } 428 429 static int qeth_l3_send_setrouting(struct qeth_card *card, 430 enum qeth_routing_types type, enum qeth_prot_versions prot) 431 { 432 int rc; 433 struct qeth_ipa_cmd *cmd; 434 struct qeth_cmd_buffer *iob; 435 436 QETH_CARD_TEXT(card, 4, "setroutg"); 437 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot); 438 if (!iob) 439 return -ENOMEM; 440 cmd = __ipa_cmd(iob); 441 cmd->data.setrtg.type = (type); 442 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 443 444 return rc; 445 } 446 447 static int qeth_l3_correct_routing_type(struct qeth_card *card, 448 enum qeth_routing_types *type, enum qeth_prot_versions prot) 449 { 450 if (card->info.type == QETH_CARD_TYPE_IQD) { 451 switch (*type) { 452 case NO_ROUTER: 453 case PRIMARY_CONNECTOR: 454 case SECONDARY_CONNECTOR: 455 case MULTICAST_ROUTER: 456 return 0; 457 default: 458 goto out_inval; 459 } 460 } else { 461 switch (*type) { 462 case NO_ROUTER: 463 case PRIMARY_ROUTER: 464 case SECONDARY_ROUTER: 465 return 0; 466 case MULTICAST_ROUTER: 467 if (qeth_is_ipafunc_supported(card, prot, 468 IPA_OSA_MC_ROUTER)) 469 return 0; 470 default: 471 goto out_inval; 472 } 473 } 474 out_inval: 475 *type = NO_ROUTER; 476 return -EINVAL; 477 } 478 479 int qeth_l3_setrouting_v4(struct qeth_card *card) 480 { 481 int rc; 482 483 QETH_CARD_TEXT(card, 3, "setrtg4"); 484 485 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, 486 QETH_PROT_IPV4); 487 if (rc) 488 return rc; 489 490 rc = qeth_l3_send_setrouting(card, card->options.route4.type, 491 QETH_PROT_IPV4); 492 if (rc) { 493 card->options.route4.type = NO_ROUTER; 494 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 495 rc, CARD_DEVID(card)); 496 } 497 return rc; 498 } 499 500 int qeth_l3_setrouting_v6(struct qeth_card *card) 501 { 502 int rc = 0; 503 504 QETH_CARD_TEXT(card, 3, "setrtg6"); 505 506 if (!qeth_is_supported(card, IPA_IPV6)) 507 return 0; 508 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type, 509 QETH_PROT_IPV6); 510 if (rc) 511 return rc; 512 513 rc = qeth_l3_send_setrouting(card, card->options.route6.type, 514 QETH_PROT_IPV6); 515 if (rc) { 516 card->options.route6.type = NO_ROUTER; 517 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 518 rc, CARD_DEVID(card)); 519 } 520 return rc; 521 } 522 523 /* 524 * IP address takeover related functions 525 */ 526 527 /** 528 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs. 529 * 530 * Caller must hold ip_lock. 531 */ 532 void qeth_l3_update_ipato(struct qeth_card *card) 533 { 534 struct qeth_ipaddr *addr; 535 unsigned int i; 536 537 hash_for_each(card->ip_htable, i, addr, hnode) { 538 if (addr->type != QETH_IP_TYPE_NORMAL) 539 continue; 540 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr); 541 } 542 } 543 544 static void qeth_l3_clear_ipato_list(struct qeth_card *card) 545 { 546 struct qeth_ipato_entry *ipatoe, *tmp; 547 548 spin_lock_bh(&card->ip_lock); 549 550 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 551 list_del(&ipatoe->entry); 552 kfree(ipatoe); 553 } 554 555 qeth_l3_update_ipato(card); 556 spin_unlock_bh(&card->ip_lock); 557 } 558 559 int qeth_l3_add_ipato_entry(struct qeth_card *card, 560 struct qeth_ipato_entry *new) 561 { 562 struct qeth_ipato_entry *ipatoe; 563 int rc = 0; 564 565 QETH_CARD_TEXT(card, 2, "addipato"); 566 567 spin_lock_bh(&card->ip_lock); 568 569 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 570 if (ipatoe->proto != new->proto) 571 continue; 572 if (!memcmp(ipatoe->addr, new->addr, 573 (ipatoe->proto == QETH_PROT_IPV4)? 4:16) && 574 (ipatoe->mask_bits == new->mask_bits)) { 575 rc = -EEXIST; 576 break; 577 } 578 } 579 580 if (!rc) { 581 list_add_tail(&new->entry, &card->ipato.entries); 582 qeth_l3_update_ipato(card); 583 } 584 585 spin_unlock_bh(&card->ip_lock); 586 587 return rc; 588 } 589 590 int qeth_l3_del_ipato_entry(struct qeth_card *card, 591 enum qeth_prot_versions proto, u8 *addr, 592 int mask_bits) 593 { 594 struct qeth_ipato_entry *ipatoe, *tmp; 595 int rc = -ENOENT; 596 597 QETH_CARD_TEXT(card, 2, "delipato"); 598 599 spin_lock_bh(&card->ip_lock); 600 601 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 602 if (ipatoe->proto != proto) 603 continue; 604 if (!memcmp(ipatoe->addr, addr, 605 (proto == QETH_PROT_IPV4)? 4:16) && 606 (ipatoe->mask_bits == mask_bits)) { 607 list_del(&ipatoe->entry); 608 qeth_l3_update_ipato(card); 609 kfree(ipatoe); 610 rc = 0; 611 } 612 } 613 614 spin_unlock_bh(&card->ip_lock); 615 return rc; 616 } 617 618 int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip, 619 enum qeth_ip_types type, 620 enum qeth_prot_versions proto) 621 { 622 struct qeth_ipaddr addr; 623 int rc; 624 625 qeth_l3_init_ipaddr(&addr, type, proto); 626 if (proto == QETH_PROT_IPV4) 627 memcpy(&addr.u.a4.addr, ip, 4); 628 else 629 memcpy(&addr.u.a6.addr, ip, 16); 630 631 spin_lock_bh(&card->ip_lock); 632 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr); 633 spin_unlock_bh(&card->ip_lock); 634 return rc; 635 } 636 637 int qeth_l3_modify_hsuid(struct qeth_card *card, bool add) 638 { 639 struct qeth_ipaddr addr; 640 int rc, i; 641 642 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 643 addr.u.a6.addr.s6_addr[0] = 0xfe; 644 addr.u.a6.addr.s6_addr[1] = 0x80; 645 for (i = 0; i < 8; i++) 646 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i]; 647 648 spin_lock_bh(&card->ip_lock); 649 rc = add ? qeth_l3_add_ip(card, &addr) : qeth_l3_delete_ip(card, &addr); 650 spin_unlock_bh(&card->ip_lock); 651 return rc; 652 } 653 654 static int qeth_l3_register_addr_entry(struct qeth_card *card, 655 struct qeth_ipaddr *addr) 656 { 657 char buf[50]; 658 int rc = 0; 659 int cnt = 3; 660 661 if (card->options.sniffer) 662 return 0; 663 664 if (addr->proto == QETH_PROT_IPV4) { 665 QETH_CARD_TEXT(card, 2, "setaddr4"); 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, "setaddr6"); 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, "setaddr?"); 673 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 674 } 675 do { 676 if (addr->is_multicast) 677 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); 678 else 679 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP); 680 if (rc) 681 QETH_CARD_TEXT(card, 2, "failed"); 682 } while ((--cnt > 0) && rc); 683 if (rc) { 684 QETH_CARD_TEXT(card, 2, "FAILED"); 685 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); 686 dev_warn(&card->gdev->dev, 687 "Registering IP address %s failed\n", buf); 688 } 689 return rc; 690 } 691 692 static int qeth_l3_deregister_addr_entry(struct qeth_card *card, 693 struct qeth_ipaddr *addr) 694 { 695 int rc = 0; 696 697 if (card->options.sniffer) 698 return 0; 699 700 if (addr->proto == QETH_PROT_IPV4) { 701 QETH_CARD_TEXT(card, 2, "deladdr4"); 702 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 703 } else if (addr->proto == QETH_PROT_IPV6) { 704 QETH_CARD_TEXT(card, 2, "deladdr6"); 705 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 706 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 707 } else { 708 QETH_CARD_TEXT(card, 2, "deladdr?"); 709 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 710 } 711 if (addr->is_multicast) 712 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); 713 else 714 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP); 715 if (rc) 716 QETH_CARD_TEXT(card, 2, "failed"); 717 718 return rc; 719 } 720 721 static int qeth_l3_setadapter_parms(struct qeth_card *card) 722 { 723 int rc = 0; 724 725 QETH_DBF_TEXT(SETUP, 2, "setadprm"); 726 727 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { 728 rc = qeth_setadpparms_change_macaddr(card); 729 if (rc) 730 dev_warn(&card->gdev->dev, "Reading the adapter MAC" 731 " address failed\n"); 732 } 733 734 return rc; 735 } 736 737 static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) 738 { 739 int rc; 740 741 QETH_CARD_TEXT(card, 3, "ipaarp"); 742 743 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 744 dev_info(&card->gdev->dev, 745 "ARP processing not supported on %s!\n", 746 QETH_CARD_IFNAME(card)); 747 return 0; 748 } 749 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 750 IPA_CMD_ASS_START, 0); 751 if (rc) { 752 dev_warn(&card->gdev->dev, 753 "Starting ARP processing support for %s failed\n", 754 QETH_CARD_IFNAME(card)); 755 } 756 return rc; 757 } 758 759 static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 760 { 761 int rc; 762 763 QETH_CARD_TEXT(card, 3, "stsrcmac"); 764 765 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { 766 dev_info(&card->gdev->dev, 767 "Inbound source MAC-address not supported on %s\n", 768 QETH_CARD_IFNAME(card)); 769 return -EOPNOTSUPP; 770 } 771 772 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC, 773 IPA_CMD_ASS_START, 0); 774 if (rc) 775 dev_warn(&card->gdev->dev, 776 "Starting source MAC-address support for %s failed\n", 777 QETH_CARD_IFNAME(card)); 778 return rc; 779 } 780 781 static int qeth_l3_start_ipa_vlan(struct qeth_card *card) 782 { 783 int rc = 0; 784 785 QETH_CARD_TEXT(card, 3, "strtvlan"); 786 787 if (!qeth_is_supported(card, IPA_FULL_VLAN)) { 788 dev_info(&card->gdev->dev, 789 "VLAN not supported on %s\n", QETH_CARD_IFNAME(card)); 790 return -EOPNOTSUPP; 791 } 792 793 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO, 794 IPA_CMD_ASS_START, 0); 795 if (rc) { 796 dev_warn(&card->gdev->dev, 797 "Starting VLAN support for %s failed\n", 798 QETH_CARD_IFNAME(card)); 799 } else { 800 dev_info(&card->gdev->dev, "VLAN enabled\n"); 801 } 802 return rc; 803 } 804 805 static int qeth_l3_start_ipa_multicast(struct qeth_card *card) 806 { 807 int rc; 808 809 QETH_CARD_TEXT(card, 3, "stmcast"); 810 811 if (!qeth_is_supported(card, IPA_MULTICASTING)) { 812 dev_info(&card->gdev->dev, 813 "Multicast not supported on %s\n", 814 QETH_CARD_IFNAME(card)); 815 return -EOPNOTSUPP; 816 } 817 818 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING, 819 IPA_CMD_ASS_START, 0); 820 if (rc) { 821 dev_warn(&card->gdev->dev, 822 "Starting multicast support for %s failed\n", 823 QETH_CARD_IFNAME(card)); 824 } else { 825 dev_info(&card->gdev->dev, "Multicast enabled\n"); 826 card->dev->flags |= IFF_MULTICAST; 827 } 828 return rc; 829 } 830 831 static int qeth_l3_softsetup_ipv6(struct qeth_card *card) 832 { 833 int rc; 834 835 QETH_CARD_TEXT(card, 3, "softipv6"); 836 837 if (card->info.type == QETH_CARD_TYPE_IQD) 838 goto out; 839 840 rc = qeth_send_simple_setassparms(card, IPA_IPV6, 841 IPA_CMD_ASS_START, 3); 842 if (rc) { 843 dev_err(&card->gdev->dev, 844 "Activating IPv6 support for %s failed\n", 845 QETH_CARD_IFNAME(card)); 846 return rc; 847 } 848 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, 849 IPA_CMD_ASS_START, 0); 850 if (rc) { 851 dev_err(&card->gdev->dev, 852 "Activating IPv6 support for %s failed\n", 853 QETH_CARD_IFNAME(card)); 854 return rc; 855 } 856 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU, 857 IPA_CMD_ASS_START, 0); 858 if (rc) { 859 dev_warn(&card->gdev->dev, 860 "Enabling the passthrough mode for %s failed\n", 861 QETH_CARD_IFNAME(card)); 862 return rc; 863 } 864 out: 865 dev_info(&card->gdev->dev, "IPV6 enabled\n"); 866 return 0; 867 } 868 869 static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) 870 { 871 QETH_CARD_TEXT(card, 3, "strtipv6"); 872 873 if (!qeth_is_supported(card, IPA_IPV6)) { 874 dev_info(&card->gdev->dev, 875 "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card)); 876 return 0; 877 } 878 return qeth_l3_softsetup_ipv6(card); 879 } 880 881 static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) 882 { 883 int rc; 884 885 QETH_CARD_TEXT(card, 3, "stbrdcst"); 886 card->info.broadcast_capable = 0; 887 if (!qeth_is_supported(card, IPA_FILTERING)) { 888 dev_info(&card->gdev->dev, 889 "Broadcast not supported on %s\n", 890 QETH_CARD_IFNAME(card)); 891 rc = -EOPNOTSUPP; 892 goto out; 893 } 894 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 895 IPA_CMD_ASS_START, 0); 896 if (rc) { 897 dev_warn(&card->gdev->dev, "Enabling broadcast filtering for " 898 "%s failed\n", QETH_CARD_IFNAME(card)); 899 goto out; 900 } 901 902 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 903 IPA_CMD_ASS_CONFIGURE, 1); 904 if (rc) { 905 dev_warn(&card->gdev->dev, 906 "Setting up broadcast filtering for %s failed\n", 907 QETH_CARD_IFNAME(card)); 908 goto out; 909 } 910 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; 911 dev_info(&card->gdev->dev, "Broadcast enabled\n"); 912 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 913 IPA_CMD_ASS_ENABLE, 1); 914 if (rc) { 915 dev_warn(&card->gdev->dev, "Setting up broadcast echo " 916 "filtering for %s failed\n", QETH_CARD_IFNAME(card)); 917 goto out; 918 } 919 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; 920 out: 921 if (card->info.broadcast_capable) 922 card->dev->flags |= IFF_BROADCAST; 923 else 924 card->dev->flags &= ~IFF_BROADCAST; 925 return rc; 926 } 927 928 static int qeth_l3_start_ipassists(struct qeth_card *card) 929 { 930 QETH_CARD_TEXT(card, 3, "strtipas"); 931 932 if (qeth_set_access_ctrl_online(card, 0)) 933 return -EIO; 934 qeth_l3_start_ipa_arp_processing(card); /* go on*/ 935 qeth_l3_start_ipa_source_mac(card); /* go on*/ 936 qeth_l3_start_ipa_vlan(card); /* go on*/ 937 qeth_l3_start_ipa_multicast(card); /* go on*/ 938 qeth_l3_start_ipa_ipv6(card); /* go on*/ 939 qeth_l3_start_ipa_broadcast(card); /* go on*/ 940 return 0; 941 } 942 943 static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, 944 struct qeth_reply *reply, unsigned long data) 945 { 946 struct qeth_ipa_cmd *cmd; 947 948 cmd = (struct qeth_ipa_cmd *) data; 949 if (cmd->hdr.return_code == 0) 950 ether_addr_copy(card->dev->dev_addr, 951 cmd->data.create_destroy_addr.unique_id); 952 else 953 eth_random_addr(card->dev->dev_addr); 954 955 return 0; 956 } 957 958 static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) 959 { 960 int rc = 0; 961 struct qeth_cmd_buffer *iob; 962 struct qeth_ipa_cmd *cmd; 963 964 QETH_DBF_TEXT(SETUP, 2, "hsrmac"); 965 966 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 967 QETH_PROT_IPV6); 968 if (!iob) 969 return -ENOMEM; 970 cmd = __ipa_cmd(iob); 971 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 972 card->info.unique_id; 973 974 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, 975 NULL); 976 return rc; 977 } 978 979 static int qeth_l3_get_unique_id_cb(struct qeth_card *card, 980 struct qeth_reply *reply, unsigned long data) 981 { 982 struct qeth_ipa_cmd *cmd; 983 984 cmd = (struct qeth_ipa_cmd *) data; 985 if (cmd->hdr.return_code == 0) 986 card->info.unique_id = *((__u16 *) 987 &cmd->data.create_destroy_addr.unique_id[6]); 988 else { 989 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 990 UNIQUE_ID_NOT_BY_CARD; 991 dev_warn(&card->gdev->dev, "The network adapter failed to " 992 "generate a unique ID\n"); 993 } 994 return 0; 995 } 996 997 static int qeth_l3_get_unique_id(struct qeth_card *card) 998 { 999 int rc = 0; 1000 struct qeth_cmd_buffer *iob; 1001 struct qeth_ipa_cmd *cmd; 1002 1003 QETH_DBF_TEXT(SETUP, 2, "guniqeid"); 1004 1005 if (!qeth_is_supported(card, IPA_IPV6)) { 1006 card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | 1007 UNIQUE_ID_NOT_BY_CARD; 1008 return 0; 1009 } 1010 1011 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, 1012 QETH_PROT_IPV6); 1013 if (!iob) 1014 return -ENOMEM; 1015 cmd = __ipa_cmd(iob); 1016 *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = 1017 card->info.unique_id; 1018 1019 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL); 1020 return rc; 1021 } 1022 1023 static int 1024 qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, 1025 unsigned long data) 1026 { 1027 struct qeth_ipa_cmd *cmd; 1028 __u16 rc; 1029 1030 QETH_DBF_TEXT(SETUP, 2, "diastrcb"); 1031 1032 cmd = (struct qeth_ipa_cmd *)data; 1033 rc = cmd->hdr.return_code; 1034 if (rc) 1035 QETH_CARD_TEXT_(card, 2, "dxter%x", rc); 1036 switch (cmd->data.diagass.action) { 1037 case QETH_DIAGS_CMD_TRACE_QUERY: 1038 break; 1039 case QETH_DIAGS_CMD_TRACE_DISABLE: 1040 switch (rc) { 1041 case 0: 1042 case IPA_RC_INVALID_SUBCMD: 1043 card->info.promisc_mode = SET_PROMISC_MODE_OFF; 1044 dev_info(&card->gdev->dev, "The HiperSockets network " 1045 "traffic analyzer is deactivated\n"); 1046 break; 1047 default: 1048 break; 1049 } 1050 break; 1051 case QETH_DIAGS_CMD_TRACE_ENABLE: 1052 switch (rc) { 1053 case 0: 1054 card->info.promisc_mode = SET_PROMISC_MODE_ON; 1055 dev_info(&card->gdev->dev, "The HiperSockets network " 1056 "traffic analyzer is activated\n"); 1057 break; 1058 case IPA_RC_HARDWARE_AUTH_ERROR: 1059 dev_warn(&card->gdev->dev, "The device is not " 1060 "authorized to run as a HiperSockets network " 1061 "traffic analyzer\n"); 1062 break; 1063 case IPA_RC_TRACE_ALREADY_ACTIVE: 1064 dev_warn(&card->gdev->dev, "A HiperSockets " 1065 "network traffic analyzer is already " 1066 "active in the HiperSockets LAN\n"); 1067 break; 1068 default: 1069 break; 1070 } 1071 break; 1072 default: 1073 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n", 1074 cmd->data.diagass.action, CARD_DEVID(card)); 1075 } 1076 1077 return 0; 1078 } 1079 1080 static int 1081 qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) 1082 { 1083 struct qeth_cmd_buffer *iob; 1084 struct qeth_ipa_cmd *cmd; 1085 1086 QETH_DBF_TEXT(SETUP, 2, "diagtrac"); 1087 1088 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0); 1089 if (!iob) 1090 return -ENOMEM; 1091 cmd = __ipa_cmd(iob); 1092 cmd->data.diagass.subcmd_len = 16; 1093 cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRACE; 1094 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; 1095 cmd->data.diagass.action = diags_cmd; 1096 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL); 1097 } 1098 1099 static void 1100 qeth_l3_add_mc_to_hash(struct qeth_card *card, struct in_device *in4_dev) 1101 { 1102 struct ip_mc_list *im4; 1103 struct qeth_ipaddr *tmp, *ipm; 1104 1105 QETH_CARD_TEXT(card, 4, "addmc"); 1106 1107 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1108 if (!tmp) 1109 return; 1110 1111 for (im4 = rcu_dereference(in4_dev->mc_list); im4 != NULL; 1112 im4 = rcu_dereference(im4->next_rcu)) { 1113 ip_eth_mc_map(im4->multiaddr, tmp->mac); 1114 tmp->u.a4.addr = be32_to_cpu(im4->multiaddr); 1115 tmp->is_multicast = 1; 1116 1117 ipm = qeth_l3_find_addr_by_ip(card, tmp); 1118 if (ipm) { 1119 /* for mcast, by-IP match means full match */ 1120 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1121 } else { 1122 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); 1123 if (!ipm) 1124 continue; 1125 ether_addr_copy(ipm->mac, tmp->mac); 1126 ipm->u.a4.addr = be32_to_cpu(im4->multiaddr); 1127 ipm->is_multicast = 1; 1128 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1129 hash_add(card->ip_mc_htable, 1130 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1131 } 1132 } 1133 1134 kfree(tmp); 1135 } 1136 1137 /* called with rcu_read_lock */ 1138 static void qeth_l3_add_vlan_mc(struct qeth_card *card) 1139 { 1140 struct in_device *in_dev; 1141 u16 vid; 1142 1143 QETH_CARD_TEXT(card, 4, "addmcvl"); 1144 1145 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1146 return; 1147 1148 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1149 struct net_device *netdev; 1150 1151 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1152 vid); 1153 if (netdev == NULL || 1154 !(netdev->flags & IFF_UP)) 1155 continue; 1156 in_dev = __in_dev_get_rcu(netdev); 1157 if (!in_dev) 1158 continue; 1159 qeth_l3_add_mc_to_hash(card, in_dev); 1160 } 1161 } 1162 1163 static void qeth_l3_add_multicast_ipv4(struct qeth_card *card) 1164 { 1165 struct in_device *in4_dev; 1166 1167 QETH_CARD_TEXT(card, 4, "chkmcv4"); 1168 1169 rcu_read_lock(); 1170 in4_dev = __in_dev_get_rcu(card->dev); 1171 if (in4_dev == NULL) 1172 goto unlock; 1173 qeth_l3_add_mc_to_hash(card, in4_dev); 1174 qeth_l3_add_vlan_mc(card); 1175 unlock: 1176 rcu_read_unlock(); 1177 } 1178 1179 static void qeth_l3_add_mc6_to_hash(struct qeth_card *card, 1180 struct inet6_dev *in6_dev) 1181 { 1182 struct qeth_ipaddr *ipm; 1183 struct ifmcaddr6 *im6; 1184 struct qeth_ipaddr *tmp; 1185 1186 QETH_CARD_TEXT(card, 4, "addmc6"); 1187 1188 tmp = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1189 if (!tmp) 1190 return; 1191 1192 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { 1193 ipv6_eth_mc_map(&im6->mca_addr, tmp->mac); 1194 memcpy(&tmp->u.a6.addr, &im6->mca_addr.s6_addr, 1195 sizeof(struct in6_addr)); 1196 tmp->is_multicast = 1; 1197 1198 ipm = qeth_l3_find_addr_by_ip(card, tmp); 1199 if (ipm) { 1200 /* for mcast, by-IP match means full match */ 1201 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1202 continue; 1203 } 1204 1205 ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); 1206 if (!ipm) 1207 continue; 1208 1209 ether_addr_copy(ipm->mac, tmp->mac); 1210 memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr, 1211 sizeof(struct in6_addr)); 1212 ipm->is_multicast = 1; 1213 ipm->disp_flag = QETH_DISP_ADDR_ADD; 1214 hash_add(card->ip_mc_htable, 1215 &ipm->hnode, qeth_l3_ipaddr_hash(ipm)); 1216 1217 } 1218 kfree(tmp); 1219 } 1220 1221 /* called with rcu_read_lock */ 1222 static void qeth_l3_add_vlan_mc6(struct qeth_card *card) 1223 { 1224 struct inet6_dev *in_dev; 1225 u16 vid; 1226 1227 QETH_CARD_TEXT(card, 4, "admc6vl"); 1228 1229 if (!qeth_is_supported(card, IPA_FULL_VLAN)) 1230 return; 1231 1232 for_each_set_bit(vid, card->active_vlans, VLAN_N_VID) { 1233 struct net_device *netdev; 1234 1235 netdev = __vlan_find_dev_deep_rcu(card->dev, htons(ETH_P_8021Q), 1236 vid); 1237 if (netdev == NULL || 1238 !(netdev->flags & IFF_UP)) 1239 continue; 1240 in_dev = in6_dev_get(netdev); 1241 if (!in_dev) 1242 continue; 1243 read_lock_bh(&in_dev->lock); 1244 qeth_l3_add_mc6_to_hash(card, in_dev); 1245 read_unlock_bh(&in_dev->lock); 1246 in6_dev_put(in_dev); 1247 } 1248 } 1249 1250 static void qeth_l3_add_multicast_ipv6(struct qeth_card *card) 1251 { 1252 struct inet6_dev *in6_dev; 1253 1254 QETH_CARD_TEXT(card, 4, "chkmcv6"); 1255 1256 if (!qeth_is_supported(card, IPA_IPV6)) 1257 return ; 1258 in6_dev = in6_dev_get(card->dev); 1259 if (!in6_dev) 1260 return; 1261 1262 rcu_read_lock(); 1263 read_lock_bh(&in6_dev->lock); 1264 qeth_l3_add_mc6_to_hash(card, in6_dev); 1265 qeth_l3_add_vlan_mc6(card); 1266 read_unlock_bh(&in6_dev->lock); 1267 rcu_read_unlock(); 1268 in6_dev_put(in6_dev); 1269 } 1270 1271 static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, 1272 __be16 proto, u16 vid) 1273 { 1274 struct qeth_card *card = dev->ml_priv; 1275 1276 set_bit(vid, card->active_vlans); 1277 return 0; 1278 } 1279 1280 static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, 1281 __be16 proto, u16 vid) 1282 { 1283 struct qeth_card *card = dev->ml_priv; 1284 1285 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 1286 1287 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 1288 QETH_CARD_TEXT(card, 3, "kidREC"); 1289 return 0; 1290 } 1291 clear_bit(vid, card->active_vlans); 1292 qeth_l3_set_rx_mode(dev); 1293 return 0; 1294 } 1295 1296 static void qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb, 1297 struct qeth_hdr *hdr) 1298 { 1299 if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) { 1300 u16 prot = (hdr->hdr.l3.flags & QETH_HDR_IPV6) ? ETH_P_IPV6 : 1301 ETH_P_IP; 1302 unsigned char tg_addr[ETH_ALEN]; 1303 1304 skb_reset_network_header(skb); 1305 switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) { 1306 case QETH_CAST_MULTICAST: 1307 if (prot == ETH_P_IP) 1308 ip_eth_mc_map(ip_hdr(skb)->daddr, tg_addr); 1309 else 1310 ipv6_eth_mc_map(&ipv6_hdr(skb)->daddr, tg_addr); 1311 1312 card->stats.multicast++; 1313 break; 1314 case QETH_CAST_BROADCAST: 1315 ether_addr_copy(tg_addr, card->dev->broadcast); 1316 card->stats.multicast++; 1317 break; 1318 default: 1319 if (card->options.sniffer) 1320 skb->pkt_type = PACKET_OTHERHOST; 1321 ether_addr_copy(tg_addr, card->dev->dev_addr); 1322 } 1323 1324 if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR) 1325 card->dev->header_ops->create(skb, card->dev, prot, 1326 tg_addr, &hdr->hdr.l3.next_hop.rx.src_mac, 1327 skb->len); 1328 else 1329 card->dev->header_ops->create(skb, card->dev, prot, 1330 tg_addr, "FAKELL", skb->len); 1331 } 1332 1333 skb->protocol = eth_type_trans(skb, card->dev); 1334 1335 /* copy VLAN tag from hdr into skb */ 1336 if (!card->options.sniffer && 1337 (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME | 1338 QETH_HDR_EXT_INCLUDE_VLAN_TAG))) { 1339 u16 tag = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME) ? 1340 hdr->hdr.l3.vlan_id : 1341 hdr->hdr.l3.next_hop.rx.vlan_id; 1342 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag); 1343 } 1344 1345 qeth_rx_csum(card, skb, hdr->hdr.l3.ext_flags); 1346 } 1347 1348 static int qeth_l3_process_inbound_buffer(struct qeth_card *card, 1349 int budget, int *done) 1350 { 1351 struct net_device *dev = card->dev; 1352 int work_done = 0; 1353 struct sk_buff *skb; 1354 struct qeth_hdr *hdr; 1355 unsigned int len; 1356 __u16 magic; 1357 1358 *done = 0; 1359 WARN_ON_ONCE(!budget); 1360 while (budget) { 1361 skb = qeth_core_get_next_skb(card, 1362 &card->qdio.in_q->bufs[card->rx.b_index], 1363 &card->rx.b_element, &card->rx.e_offset, &hdr); 1364 if (!skb) { 1365 *done = 1; 1366 break; 1367 } 1368 switch (hdr->hdr.l3.id) { 1369 case QETH_HEADER_TYPE_LAYER3: 1370 magic = *(__u16 *)skb->data; 1371 if ((card->info.type == QETH_CARD_TYPE_IQD) && 1372 (magic == ETH_P_AF_IUCV)) { 1373 len = skb->len; 1374 dev_hard_header(skb, dev, ETH_P_AF_IUCV, 1375 dev->dev_addr, "FAKELL", len); 1376 skb->protocol = eth_type_trans(skb, dev); 1377 netif_receive_skb(skb); 1378 } else { 1379 qeth_l3_rebuild_skb(card, skb, hdr); 1380 len = skb->len; 1381 napi_gro_receive(&card->napi, skb); 1382 } 1383 break; 1384 case QETH_HEADER_TYPE_LAYER2: /* for HiperSockets sniffer */ 1385 skb->protocol = eth_type_trans(skb, skb->dev); 1386 len = skb->len; 1387 netif_receive_skb(skb); 1388 break; 1389 default: 1390 dev_kfree_skb_any(skb); 1391 QETH_CARD_TEXT(card, 3, "inbunkno"); 1392 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr)); 1393 continue; 1394 } 1395 work_done++; 1396 budget--; 1397 card->stats.rx_packets++; 1398 card->stats.rx_bytes += len; 1399 } 1400 return work_done; 1401 } 1402 1403 static void qeth_l3_stop_card(struct qeth_card *card, int recovery_mode) 1404 { 1405 QETH_DBF_TEXT(SETUP, 2, "stopcard"); 1406 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1407 1408 qeth_set_allowed_threads(card, 0, 1); 1409 if (card->options.sniffer && 1410 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) 1411 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1412 if (card->read.state == CH_STATE_UP && 1413 card->write.state == CH_STATE_UP && 1414 (card->state == CARD_STATE_UP)) { 1415 if (recovery_mode) 1416 qeth_l3_stop(card->dev); 1417 else { 1418 rtnl_lock(); 1419 dev_close(card->dev); 1420 rtnl_unlock(); 1421 } 1422 card->state = CARD_STATE_SOFTSETUP; 1423 } 1424 if (card->state == CARD_STATE_SOFTSETUP) { 1425 qeth_l3_clear_ip_htable(card, 1); 1426 qeth_clear_ipacmd_list(card); 1427 card->state = CARD_STATE_HARDSETUP; 1428 } 1429 if (card->state == CARD_STATE_HARDSETUP) { 1430 qeth_qdio_clear_card(card, 0); 1431 qeth_clear_qdio_buffers(card); 1432 qeth_clear_working_pool_list(card); 1433 card->state = CARD_STATE_DOWN; 1434 } 1435 if (card->state == CARD_STATE_DOWN) { 1436 qeth_clear_cmd_buffers(&card->read); 1437 qeth_clear_cmd_buffers(&card->write); 1438 } 1439 } 1440 1441 /* 1442 * test for and Switch promiscuous mode (on or off) 1443 * either for guestlan or HiperSocket Sniffer 1444 */ 1445 static void 1446 qeth_l3_handle_promisc_mode(struct qeth_card *card) 1447 { 1448 struct net_device *dev = card->dev; 1449 1450 if (((dev->flags & IFF_PROMISC) && 1451 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || 1452 (!(dev->flags & IFF_PROMISC) && 1453 (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) 1454 return; 1455 1456 if (card->info.guestlan) { /* Guestlan trace */ 1457 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1458 qeth_setadp_promisc_mode(card); 1459 } else if (card->options.sniffer && /* HiperSockets trace */ 1460 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 1461 if (dev->flags & IFF_PROMISC) { 1462 QETH_CARD_TEXT(card, 3, "+promisc"); 1463 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE); 1464 } else { 1465 QETH_CARD_TEXT(card, 3, "-promisc"); 1466 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1467 } 1468 } 1469 } 1470 1471 static void qeth_l3_set_rx_mode(struct net_device *dev) 1472 { 1473 struct qeth_card *card = dev->ml_priv; 1474 struct qeth_ipaddr *addr; 1475 struct hlist_node *tmp; 1476 int i, rc; 1477 1478 QETH_CARD_TEXT(card, 3, "setmulti"); 1479 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 1480 (card->state != CARD_STATE_UP)) 1481 return; 1482 if (!card->options.sniffer) { 1483 spin_lock_bh(&card->mclock); 1484 1485 qeth_l3_add_multicast_ipv4(card); 1486 qeth_l3_add_multicast_ipv6(card); 1487 1488 hash_for_each_safe(card->ip_mc_htable, i, tmp, addr, hnode) { 1489 switch (addr->disp_flag) { 1490 case QETH_DISP_ADDR_DELETE: 1491 rc = qeth_l3_deregister_addr_entry(card, addr); 1492 if (!rc || rc == IPA_RC_MC_ADDR_NOT_FOUND) { 1493 hash_del(&addr->hnode); 1494 kfree(addr); 1495 } 1496 break; 1497 case QETH_DISP_ADDR_ADD: 1498 rc = qeth_l3_register_addr_entry(card, addr); 1499 if (rc && rc != IPA_RC_LAN_OFFLINE) { 1500 hash_del(&addr->hnode); 1501 kfree(addr); 1502 break; 1503 } 1504 addr->ref_counter = 1; 1505 /* fall through */ 1506 default: 1507 /* for next call to set_rx_mode(): */ 1508 addr->disp_flag = QETH_DISP_ADDR_DELETE; 1509 } 1510 } 1511 1512 spin_unlock_bh(&card->mclock); 1513 1514 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1515 return; 1516 } 1517 qeth_l3_handle_promisc_mode(card); 1518 } 1519 1520 static int qeth_l3_arp_makerc(int rc) 1521 { 1522 switch (rc) { 1523 case IPA_RC_SUCCESS: 1524 return 0; 1525 case QETH_IPA_ARP_RC_NOTSUPP: 1526 case QETH_IPA_ARP_RC_Q_NOTSUPP: 1527 return -EOPNOTSUPP; 1528 case QETH_IPA_ARP_RC_OUT_OF_RANGE: 1529 return -EINVAL; 1530 case QETH_IPA_ARP_RC_Q_NO_DATA: 1531 return -ENOENT; 1532 default: 1533 return -EIO; 1534 } 1535 } 1536 1537 static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) 1538 { 1539 int rc; 1540 1541 QETH_CARD_TEXT(card, 3, "arpstnoe"); 1542 1543 /* 1544 * currently GuestLAN only supports the ARP assist function 1545 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; 1546 * thus we say EOPNOTSUPP for this ARP function 1547 */ 1548 if (card->info.guestlan) 1549 return -EOPNOTSUPP; 1550 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1551 return -EOPNOTSUPP; 1552 } 1553 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 1554 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 1555 no_entries); 1556 if (rc) 1557 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n", 1558 CARD_DEVID(card), rc); 1559 return qeth_l3_arp_makerc(rc); 1560 } 1561 1562 static __u32 get_arp_entry_size(struct qeth_card *card, 1563 struct qeth_arp_query_data *qdata, 1564 struct qeth_arp_entrytype *type, __u8 strip_entries) 1565 { 1566 __u32 rc; 1567 __u8 is_hsi; 1568 1569 is_hsi = qdata->reply_bits == 5; 1570 if (type->ip == QETHARP_IP_ADDR_V4) { 1571 QETH_CARD_TEXT(card, 4, "arpev4"); 1572 if (strip_entries) { 1573 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : 1574 sizeof(struct qeth_arp_qi_entry7_short); 1575 } else { 1576 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : 1577 sizeof(struct qeth_arp_qi_entry7); 1578 } 1579 } else if (type->ip == QETHARP_IP_ADDR_V6) { 1580 QETH_CARD_TEXT(card, 4, "arpev6"); 1581 if (strip_entries) { 1582 rc = is_hsi ? 1583 sizeof(struct qeth_arp_qi_entry5_short_ipv6) : 1584 sizeof(struct qeth_arp_qi_entry7_short_ipv6); 1585 } else { 1586 rc = is_hsi ? 1587 sizeof(struct qeth_arp_qi_entry5_ipv6) : 1588 sizeof(struct qeth_arp_qi_entry7_ipv6); 1589 } 1590 } else { 1591 QETH_CARD_TEXT(card, 4, "arpinv"); 1592 rc = 0; 1593 } 1594 1595 return rc; 1596 } 1597 1598 static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) 1599 { 1600 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || 1601 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); 1602 } 1603 1604 static int qeth_l3_arp_query_cb(struct qeth_card *card, 1605 struct qeth_reply *reply, unsigned long data) 1606 { 1607 struct qeth_ipa_cmd *cmd; 1608 struct qeth_arp_query_data *qdata; 1609 struct qeth_arp_query_info *qinfo; 1610 int i; 1611 int e; 1612 int entrybytes_done; 1613 int stripped_bytes; 1614 __u8 do_strip_entries; 1615 1616 QETH_CARD_TEXT(card, 3, "arpquecb"); 1617 1618 qinfo = (struct qeth_arp_query_info *) reply->param; 1619 cmd = (struct qeth_ipa_cmd *) data; 1620 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version); 1621 if (cmd->hdr.return_code) { 1622 QETH_CARD_TEXT(card, 4, "arpcberr"); 1623 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1624 return 0; 1625 } 1626 if (cmd->data.setassparms.hdr.return_code) { 1627 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 1628 QETH_CARD_TEXT(card, 4, "setaperr"); 1629 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1630 return 0; 1631 } 1632 qdata = &cmd->data.setassparms.data.query_arp; 1633 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries); 1634 1635 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; 1636 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; 1637 entrybytes_done = 0; 1638 for (e = 0; e < qdata->no_entries; ++e) { 1639 char *cur_entry; 1640 __u32 esize; 1641 struct qeth_arp_entrytype *etype; 1642 1643 cur_entry = &qdata->data + entrybytes_done; 1644 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; 1645 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) { 1646 QETH_CARD_TEXT(card, 4, "pmis"); 1647 QETH_CARD_TEXT_(card, 4, "%i", etype->ip); 1648 break; 1649 } 1650 esize = get_arp_entry_size(card, qdata, etype, 1651 do_strip_entries); 1652 QETH_CARD_TEXT_(card, 5, "esz%i", esize); 1653 if (!esize) 1654 break; 1655 1656 if ((qinfo->udata_len - qinfo->udata_offset) < esize) { 1657 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOMEM); 1658 cmd->hdr.return_code = IPA_RC_ENOMEM; 1659 goto out_error; 1660 } 1661 1662 memcpy(qinfo->udata + qinfo->udata_offset, 1663 &qdata->data + entrybytes_done + stripped_bytes, 1664 esize); 1665 entrybytes_done += esize + stripped_bytes; 1666 qinfo->udata_offset += esize; 1667 ++qinfo->no_entries; 1668 } 1669 /* check if all replies received ... */ 1670 if (cmd->data.setassparms.hdr.seq_no < 1671 cmd->data.setassparms.hdr.number_of_replies) 1672 return 1; 1673 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries); 1674 memcpy(qinfo->udata, &qinfo->no_entries, 4); 1675 /* keep STRIP_ENTRIES flag so the user program can distinguish 1676 * stripped entries from normal ones */ 1677 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) 1678 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; 1679 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); 1680 QETH_CARD_TEXT_(card, 4, "rc%i", 0); 1681 return 0; 1682 out_error: 1683 i = 0; 1684 memcpy(qinfo->udata, &i, 4); 1685 return 0; 1686 } 1687 1688 static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card, 1689 struct qeth_cmd_buffer *iob, int len, 1690 int (*reply_cb)(struct qeth_card *, struct qeth_reply *, 1691 unsigned long), 1692 void *reply_param) 1693 { 1694 QETH_CARD_TEXT(card, 4, "sendarp"); 1695 1696 memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); 1697 memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), 1698 &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); 1699 return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, 1700 reply_cb, reply_param); 1701 } 1702 1703 static int qeth_l3_query_arp_cache_info(struct qeth_card *card, 1704 enum qeth_prot_versions prot, 1705 struct qeth_arp_query_info *qinfo) 1706 { 1707 struct qeth_cmd_buffer *iob; 1708 struct qeth_ipa_cmd *cmd; 1709 int rc; 1710 1711 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); 1712 1713 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1714 IPA_CMD_ASS_ARP_QUERY_INFO, 1715 sizeof(struct qeth_arp_query_data) 1716 - sizeof(char), 1717 prot); 1718 if (!iob) 1719 return -ENOMEM; 1720 cmd = __ipa_cmd(iob); 1721 cmd->data.setassparms.data.query_arp.request_bits = 0x000F; 1722 cmd->data.setassparms.data.query_arp.reply_bits = 0; 1723 cmd->data.setassparms.data.query_arp.no_entries = 0; 1724 rc = qeth_l3_send_ipa_arp_cmd(card, iob, 1725 QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN, 1726 qeth_l3_arp_query_cb, (void *)qinfo); 1727 if (rc) 1728 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n", 1729 CARD_DEVID(card), rc); 1730 return qeth_l3_arp_makerc(rc); 1731 } 1732 1733 static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) 1734 { 1735 struct qeth_arp_query_info qinfo = {0, }; 1736 int rc; 1737 1738 QETH_CARD_TEXT(card, 3, "arpquery"); 1739 1740 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ 1741 IPA_ARP_PROCESSING)) { 1742 QETH_CARD_TEXT(card, 3, "arpqnsup"); 1743 rc = -EOPNOTSUPP; 1744 goto out; 1745 } 1746 /* get size of userspace buffer and mask_bits -> 6 bytes */ 1747 if (copy_from_user(&qinfo, udata, 6)) { 1748 rc = -EFAULT; 1749 goto out; 1750 } 1751 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 1752 if (!qinfo.udata) { 1753 rc = -ENOMEM; 1754 goto out; 1755 } 1756 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; 1757 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo); 1758 if (rc) { 1759 if (copy_to_user(udata, qinfo.udata, 4)) 1760 rc = -EFAULT; 1761 goto free_and_out; 1762 } 1763 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { 1764 /* fails in case of GuestLAN QDIO mode */ 1765 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo); 1766 } 1767 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) { 1768 QETH_CARD_TEXT(card, 4, "qactf"); 1769 rc = -EFAULT; 1770 goto free_and_out; 1771 } 1772 QETH_CARD_TEXT(card, 4, "qacts"); 1773 1774 free_and_out: 1775 kfree(qinfo.udata); 1776 out: 1777 return rc; 1778 } 1779 1780 static int qeth_l3_arp_modify_entry(struct qeth_card *card, 1781 struct qeth_arp_cache_entry *entry, 1782 enum qeth_arp_process_subcmds arp_cmd) 1783 { 1784 struct qeth_arp_cache_entry *cmd_entry; 1785 struct qeth_cmd_buffer *iob; 1786 int rc; 1787 1788 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY) 1789 QETH_CARD_TEXT(card, 3, "arpadd"); 1790 else 1791 QETH_CARD_TEXT(card, 3, "arpdel"); 1792 1793 /* 1794 * currently GuestLAN only supports the ARP assist function 1795 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; 1796 * thus we say EOPNOTSUPP for this ARP function 1797 */ 1798 if (card->info.guestlan) 1799 return -EOPNOTSUPP; 1800 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1801 return -EOPNOTSUPP; 1802 } 1803 1804 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd, 1805 sizeof(*cmd_entry), QETH_PROT_IPV4); 1806 if (!iob) 1807 return -ENOMEM; 1808 1809 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry; 1810 ether_addr_copy(cmd_entry->macaddr, entry->macaddr); 1811 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4); 1812 rc = qeth_send_ipa_cmd(card, iob, qeth_setassparms_cb, NULL); 1813 if (rc) 1814 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n", 1815 arp_cmd, CARD_DEVID(card), rc); 1816 1817 return qeth_l3_arp_makerc(rc); 1818 } 1819 1820 static int qeth_l3_arp_flush_cache(struct qeth_card *card) 1821 { 1822 int rc; 1823 1824 QETH_CARD_TEXT(card, 3, "arpflush"); 1825 1826 /* 1827 * currently GuestLAN only supports the ARP assist function 1828 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; 1829 * thus we say EOPNOTSUPP for this ARP function 1830 */ 1831 if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD)) 1832 return -EOPNOTSUPP; 1833 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1834 return -EOPNOTSUPP; 1835 } 1836 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 1837 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0); 1838 if (rc) 1839 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n", 1840 CARD_DEVID(card), rc); 1841 return qeth_l3_arp_makerc(rc); 1842 } 1843 1844 static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 1845 { 1846 struct qeth_card *card = dev->ml_priv; 1847 struct qeth_arp_cache_entry arp_entry; 1848 enum qeth_arp_process_subcmds arp_cmd; 1849 int rc = 0; 1850 1851 switch (cmd) { 1852 case SIOC_QETH_ARP_SET_NO_ENTRIES: 1853 if (!capable(CAP_NET_ADMIN)) { 1854 rc = -EPERM; 1855 break; 1856 } 1857 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); 1858 break; 1859 case SIOC_QETH_ARP_QUERY_INFO: 1860 if (!capable(CAP_NET_ADMIN)) { 1861 rc = -EPERM; 1862 break; 1863 } 1864 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data); 1865 break; 1866 case SIOC_QETH_ARP_ADD_ENTRY: 1867 case SIOC_QETH_ARP_REMOVE_ENTRY: 1868 if (!capable(CAP_NET_ADMIN)) 1869 return -EPERM; 1870 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry))) 1871 return -EFAULT; 1872 1873 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ? 1874 IPA_CMD_ASS_ARP_ADD_ENTRY : 1875 IPA_CMD_ASS_ARP_REMOVE_ENTRY; 1876 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd); 1877 case SIOC_QETH_ARP_FLUSH_CACHE: 1878 if (!capable(CAP_NET_ADMIN)) { 1879 rc = -EPERM; 1880 break; 1881 } 1882 rc = qeth_l3_arp_flush_cache(card); 1883 break; 1884 default: 1885 rc = -EOPNOTSUPP; 1886 } 1887 return rc; 1888 } 1889 1890 static int qeth_l3_get_cast_type(struct sk_buff *skb) 1891 { 1892 struct neighbour *n = NULL; 1893 struct dst_entry *dst; 1894 1895 rcu_read_lock(); 1896 dst = skb_dst(skb); 1897 if (dst) 1898 n = dst_neigh_lookup_skb(dst, skb); 1899 if (n) { 1900 int cast_type = n->type; 1901 1902 rcu_read_unlock(); 1903 neigh_release(n); 1904 if ((cast_type == RTN_BROADCAST) || 1905 (cast_type == RTN_MULTICAST) || 1906 (cast_type == RTN_ANYCAST)) 1907 return cast_type; 1908 return RTN_UNICAST; 1909 } 1910 rcu_read_unlock(); 1911 1912 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */ 1913 switch (qeth_get_ip_version(skb)) { 1914 case 4: 1915 return ipv4_is_multicast(ip_hdr(skb)->daddr) ? 1916 RTN_MULTICAST : RTN_UNICAST; 1917 case 6: 1918 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ? 1919 RTN_MULTICAST : RTN_UNICAST; 1920 default: 1921 /* ... and MAC address */ 1922 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, 1923 skb->dev->broadcast)) 1924 return RTN_BROADCAST; 1925 if (is_multicast_ether_addr(eth_hdr(skb)->h_dest)) 1926 return RTN_MULTICAST; 1927 /* default to unicast */ 1928 return RTN_UNICAST; 1929 } 1930 } 1931 1932 static void qeth_l3_fill_af_iucv_hdr(struct qeth_hdr *hdr, struct sk_buff *skb, 1933 unsigned int data_len) 1934 { 1935 char daddr[16]; 1936 1937 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 1938 hdr->hdr.l3.length = data_len; 1939 hdr->hdr.l3.flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST; 1940 1941 memset(daddr, 0, sizeof(daddr)); 1942 daddr[0] = 0xfe; 1943 daddr[1] = 0x80; 1944 memcpy(&daddr[8], iucv_trans_hdr(skb)->destUserID, 8); 1945 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, daddr, 16); 1946 } 1947 1948 static u8 qeth_l3_cast_type_to_flag(int cast_type) 1949 { 1950 if (cast_type == RTN_MULTICAST) 1951 return QETH_CAST_MULTICAST; 1952 if (cast_type == RTN_ANYCAST) 1953 return QETH_CAST_ANYCAST; 1954 if (cast_type == RTN_BROADCAST) 1955 return QETH_CAST_BROADCAST; 1956 return QETH_CAST_UNICAST; 1957 } 1958 1959 static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 1960 struct sk_buff *skb, int ipv, int cast_type, 1961 unsigned int data_len) 1962 { 1963 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 1964 1965 hdr->hdr.l3.length = data_len; 1966 1967 if (skb_is_gso(skb)) { 1968 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO; 1969 } else { 1970 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 1971 if (skb->ip_summed == CHECKSUM_PARTIAL) { 1972 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv); 1973 /* some HW requires combined L3+L4 csum offload: */ 1974 if (ipv == 4) 1975 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ; 1976 if (card->options.performance_stats) 1977 card->perf_stats.tx_csum++; 1978 } 1979 } 1980 1981 if (ipv == 4 || IS_IQD(card)) { 1982 /* NETIF_F_HW_VLAN_CTAG_TX */ 1983 if (skb_vlan_tag_present(skb)) { 1984 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME; 1985 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); 1986 } 1987 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) { 1988 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG; 1989 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); 1990 } 1991 1992 /* OSA only: */ 1993 if (!ipv) { 1994 hdr->hdr.l3.flags = QETH_HDR_PASSTHRU; 1995 if (ether_addr_equal_64bits(eth_hdr(skb)->h_dest, 1996 skb->dev->broadcast)) 1997 hdr->hdr.l3.flags |= QETH_CAST_BROADCAST; 1998 else 1999 hdr->hdr.l3.flags |= (cast_type == RTN_MULTICAST) ? 2000 QETH_CAST_MULTICAST : QETH_CAST_UNICAST; 2001 return; 2002 } 2003 2004 hdr->hdr.l3.flags = qeth_l3_cast_type_to_flag(cast_type); 2005 rcu_read_lock(); 2006 if (ipv == 4) { 2007 struct rtable *rt = skb_rtable(skb); 2008 2009 *((__be32 *) &hdr->hdr.l3.next_hop.ipv4.addr) = (rt) ? 2010 rt_nexthop(rt, ip_hdr(skb)->daddr) : 2011 ip_hdr(skb)->daddr; 2012 } else { 2013 /* IPv6 */ 2014 const struct rt6_info *rt = skb_rt6_info(skb); 2015 const struct in6_addr *next_hop; 2016 2017 if (rt && !ipv6_addr_any(&rt->rt6i_gateway)) 2018 next_hop = &rt->rt6i_gateway; 2019 else 2020 next_hop = &ipv6_hdr(skb)->daddr; 2021 memcpy(hdr->hdr.l3.next_hop.ipv6_addr, next_hop, 16); 2022 2023 hdr->hdr.l3.flags |= QETH_HDR_IPV6; 2024 if (card->info.type != QETH_CARD_TYPE_IQD) 2025 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU; 2026 } 2027 rcu_read_unlock(); 2028 } 2029 2030 static void qeth_l3_fixup_headers(struct sk_buff *skb) 2031 { 2032 struct iphdr *iph = ip_hdr(skb); 2033 2034 /* this is safe, IPv6 traffic takes a different path */ 2035 if (skb->ip_summed == CHECKSUM_PARTIAL) 2036 iph->check = 0; 2037 if (skb_is_gso(skb)) { 2038 iph->tot_len = 0; 2039 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr, 2040 iph->daddr, 0); 2041 } 2042 } 2043 2044 static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb, 2045 struct qeth_qdio_out_q *queue, int ipv, int cast_type) 2046 { 2047 unsigned int hw_hdr_len, proto_len, frame_len, elements; 2048 unsigned char eth_hdr[ETH_HLEN]; 2049 bool is_tso = skb_is_gso(skb); 2050 unsigned int data_offset = 0; 2051 struct qeth_hdr *hdr = NULL; 2052 unsigned int hd_len = 0; 2053 int push_len, rc; 2054 bool is_sg; 2055 2056 if (is_tso) { 2057 hw_hdr_len = sizeof(struct qeth_hdr_tso); 2058 proto_len = skb_transport_offset(skb) + tcp_hdrlen(skb) - 2059 ETH_HLEN; 2060 } else { 2061 hw_hdr_len = sizeof(struct qeth_hdr); 2062 proto_len = 0; 2063 } 2064 2065 /* re-use the L2 header area for the HW header: */ 2066 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN); 2067 if (rc) 2068 return rc; 2069 skb_copy_from_linear_data(skb, eth_hdr, ETH_HLEN); 2070 skb_pull(skb, ETH_HLEN); 2071 frame_len = skb->len; 2072 2073 qeth_l3_fixup_headers(skb); 2074 push_len = qeth_add_hw_header(card, skb, &hdr, hw_hdr_len, proto_len, 2075 &elements); 2076 if (push_len < 0) 2077 return push_len; 2078 if (is_tso || !push_len) { 2079 /* HW header needs its own buffer element. */ 2080 hd_len = hw_hdr_len + proto_len; 2081 data_offset = push_len + proto_len; 2082 } 2083 memset(hdr, 0, hw_hdr_len); 2084 2085 if (skb->protocol == htons(ETH_P_AF_IUCV)) { 2086 qeth_l3_fill_af_iucv_hdr(hdr, skb, frame_len); 2087 } else { 2088 qeth_l3_fill_header(card, hdr, skb, ipv, cast_type, frame_len); 2089 if (is_tso) 2090 qeth_fill_tso_ext((struct qeth_hdr_tso *) hdr, 2091 frame_len - proto_len, skb, 2092 proto_len); 2093 } 2094 2095 is_sg = skb_is_nonlinear(skb); 2096 if (IS_IQD(card)) { 2097 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, 2098 hd_len); 2099 } else { 2100 /* TODO: drop skb_orphan() once TX completion is fast enough */ 2101 skb_orphan(skb); 2102 rc = qeth_do_send_packet(card, queue, skb, hdr, data_offset, 2103 hd_len, elements); 2104 } 2105 2106 if (!rc) { 2107 if (card->options.performance_stats) { 2108 card->perf_stats.buf_elements_sent += elements; 2109 if (is_sg) 2110 card->perf_stats.sg_skbs_sent++; 2111 if (is_tso) { 2112 card->perf_stats.large_send_bytes += frame_len; 2113 card->perf_stats.large_send_cnt++; 2114 } 2115 } 2116 } else { 2117 if (!push_len) 2118 kmem_cache_free(qeth_core_header_cache, hdr); 2119 if (rc == -EBUSY) { 2120 /* roll back to ETH header */ 2121 skb_pull(skb, push_len); 2122 skb_push(skb, ETH_HLEN); 2123 skb_copy_to_linear_data(skb, eth_hdr, ETH_HLEN); 2124 } 2125 } 2126 return rc; 2127 } 2128 2129 static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, 2130 struct net_device *dev) 2131 { 2132 int cast_type = qeth_l3_get_cast_type(skb); 2133 struct qeth_card *card = dev->ml_priv; 2134 int ipv = qeth_get_ip_version(skb); 2135 struct qeth_qdio_out_q *queue; 2136 int tx_bytes = skb->len; 2137 int rc; 2138 2139 if (IS_IQD(card)) { 2140 if (card->options.sniffer) 2141 goto tx_drop; 2142 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) || 2143 (card->options.cq == QETH_CQ_ENABLED && 2144 skb->protocol != htons(ETH_P_AF_IUCV))) 2145 goto tx_drop; 2146 } 2147 2148 if (card->state != CARD_STATE_UP) { 2149 card->stats.tx_carrier_errors++; 2150 goto tx_drop; 2151 } 2152 2153 if (cast_type == RTN_BROADCAST && !card->info.broadcast_capable) 2154 goto tx_drop; 2155 2156 queue = qeth_get_tx_queue(card, skb, ipv, cast_type); 2157 2158 if (card->options.performance_stats) { 2159 card->perf_stats.outbound_cnt++; 2160 card->perf_stats.outbound_start_time = qeth_get_micros(); 2161 } 2162 netif_stop_queue(dev); 2163 2164 if (ipv == 4 || IS_IQD(card)) 2165 rc = qeth_l3_xmit(card, skb, queue, ipv, cast_type); 2166 else 2167 rc = qeth_xmit(card, skb, queue, ipv, cast_type, 2168 qeth_l3_fill_header); 2169 2170 if (!rc) { 2171 card->stats.tx_packets++; 2172 card->stats.tx_bytes += tx_bytes; 2173 if (card->options.performance_stats) 2174 card->perf_stats.outbound_time += qeth_get_micros() - 2175 card->perf_stats.outbound_start_time; 2176 netif_wake_queue(dev); 2177 return NETDEV_TX_OK; 2178 } else if (rc == -EBUSY) { 2179 return NETDEV_TX_BUSY; 2180 } /* else fall through */ 2181 2182 tx_drop: 2183 card->stats.tx_dropped++; 2184 card->stats.tx_errors++; 2185 dev_kfree_skb_any(skb); 2186 netif_wake_queue(dev); 2187 return NETDEV_TX_OK; 2188 } 2189 2190 static int __qeth_l3_open(struct net_device *dev) 2191 { 2192 struct qeth_card *card = dev->ml_priv; 2193 int rc = 0; 2194 2195 QETH_CARD_TEXT(card, 4, "qethopen"); 2196 if (card->state == CARD_STATE_UP) 2197 return rc; 2198 if (card->state != CARD_STATE_SOFTSETUP) 2199 return -ENODEV; 2200 card->data.state = CH_STATE_UP; 2201 card->state = CARD_STATE_UP; 2202 netif_start_queue(dev); 2203 2204 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 2205 napi_enable(&card->napi); 2206 local_bh_disable(); 2207 napi_schedule(&card->napi); 2208 /* kick-start the NAPI softirq: */ 2209 local_bh_enable(); 2210 } else 2211 rc = -EIO; 2212 return rc; 2213 } 2214 2215 static int qeth_l3_open(struct net_device *dev) 2216 { 2217 struct qeth_card *card = dev->ml_priv; 2218 2219 QETH_CARD_TEXT(card, 5, "qethope_"); 2220 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 2221 QETH_CARD_TEXT(card, 3, "openREC"); 2222 return -ERESTARTSYS; 2223 } 2224 return __qeth_l3_open(dev); 2225 } 2226 2227 static int qeth_l3_stop(struct net_device *dev) 2228 { 2229 struct qeth_card *card = dev->ml_priv; 2230 2231 QETH_CARD_TEXT(card, 4, "qethstop"); 2232 netif_tx_disable(dev); 2233 if (card->state == CARD_STATE_UP) { 2234 card->state = CARD_STATE_SOFTSETUP; 2235 napi_disable(&card->napi); 2236 } 2237 return 0; 2238 } 2239 2240 static const struct ethtool_ops qeth_l3_ethtool_ops = { 2241 .get_link = ethtool_op_get_link, 2242 .get_strings = qeth_core_get_strings, 2243 .get_ethtool_stats = qeth_core_get_ethtool_stats, 2244 .get_sset_count = qeth_core_get_sset_count, 2245 .get_drvinfo = qeth_core_get_drvinfo, 2246 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 2247 }; 2248 2249 /* 2250 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting 2251 * NOARP on the netdevice is no option because it also turns off neighbor 2252 * solicitation. For IPv4 we install a neighbor_setup function. We don't want 2253 * arp resolution but we want the hard header (packet socket will work 2254 * e.g. tcpdump) 2255 */ 2256 static int qeth_l3_neigh_setup_noarp(struct neighbour *n) 2257 { 2258 n->nud_state = NUD_NOARP; 2259 memcpy(n->ha, "FAKELL", 6); 2260 n->output = n->ops->connected_output; 2261 return 0; 2262 } 2263 2264 static int 2265 qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) 2266 { 2267 if (np->tbl->family == AF_INET) 2268 np->neigh_setup = qeth_l3_neigh_setup_noarp; 2269 2270 return 0; 2271 } 2272 2273 static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb, 2274 struct net_device *dev, 2275 netdev_features_t features) 2276 { 2277 if (qeth_get_ip_version(skb) != 4) 2278 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 2279 return qeth_features_check(skb, dev, features); 2280 } 2281 2282 static const struct net_device_ops qeth_l3_netdev_ops = { 2283 .ndo_open = qeth_l3_open, 2284 .ndo_stop = qeth_l3_stop, 2285 .ndo_get_stats = qeth_get_stats, 2286 .ndo_start_xmit = qeth_l3_hard_start_xmit, 2287 .ndo_validate_addr = eth_validate_addr, 2288 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 2289 .ndo_do_ioctl = qeth_do_ioctl, 2290 .ndo_fix_features = qeth_fix_features, 2291 .ndo_set_features = qeth_set_features, 2292 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 2293 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 2294 .ndo_tx_timeout = qeth_tx_timeout, 2295 }; 2296 2297 static const struct net_device_ops qeth_l3_osa_netdev_ops = { 2298 .ndo_open = qeth_l3_open, 2299 .ndo_stop = qeth_l3_stop, 2300 .ndo_get_stats = qeth_get_stats, 2301 .ndo_start_xmit = qeth_l3_hard_start_xmit, 2302 .ndo_features_check = qeth_l3_osa_features_check, 2303 .ndo_validate_addr = eth_validate_addr, 2304 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 2305 .ndo_do_ioctl = qeth_do_ioctl, 2306 .ndo_fix_features = qeth_fix_features, 2307 .ndo_set_features = qeth_set_features, 2308 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 2309 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 2310 .ndo_tx_timeout = qeth_tx_timeout, 2311 .ndo_neigh_setup = qeth_l3_neigh_setup, 2312 }; 2313 2314 static int qeth_l3_setup_netdev(struct qeth_card *card, bool carrier_ok) 2315 { 2316 unsigned int headroom; 2317 int rc; 2318 2319 if (qeth_netdev_is_registered(card->dev)) 2320 return 0; 2321 2322 if (card->info.type == QETH_CARD_TYPE_OSD || 2323 card->info.type == QETH_CARD_TYPE_OSX) { 2324 if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) || 2325 (card->info.link_type == QETH_LINK_TYPE_HSTR)) { 2326 pr_info("qeth_l3: ignoring TR device\n"); 2327 return -ENODEV; 2328 } 2329 2330 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; 2331 2332 /*IPv6 address autoconfiguration stuff*/ 2333 qeth_l3_get_unique_id(card); 2334 if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD)) 2335 card->dev->dev_id = card->info.unique_id & 0xffff; 2336 2337 if (!card->info.guestlan) { 2338 card->dev->features |= NETIF_F_SG; 2339 card->dev->hw_features |= NETIF_F_TSO | 2340 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 2341 card->dev->vlan_features |= NETIF_F_TSO | 2342 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 2343 } 2344 2345 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 2346 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 2347 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 2348 } 2349 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 2350 card->dev->hw_features |= NETIF_F_TSO6; 2351 card->dev->vlan_features |= NETIF_F_TSO6; 2352 } 2353 2354 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */ 2355 if (card->dev->hw_features & NETIF_F_TSO6) 2356 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN; 2357 else if (card->dev->hw_features & NETIF_F_TSO) 2358 headroom = sizeof(struct qeth_hdr_tso); 2359 else 2360 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN; 2361 } else if (card->info.type == QETH_CARD_TYPE_IQD) { 2362 card->dev->flags |= IFF_NOARP; 2363 card->dev->netdev_ops = &qeth_l3_netdev_ops; 2364 headroom = sizeof(struct qeth_hdr) - ETH_HLEN; 2365 2366 rc = qeth_l3_iqd_read_initial_mac(card); 2367 if (rc) 2368 goto out; 2369 2370 if (card->options.hsuid[0]) 2371 memcpy(card->dev->perm_addr, card->options.hsuid, 9); 2372 } else 2373 return -ENODEV; 2374 2375 card->dev->needed_headroom = headroom; 2376 card->dev->ethtool_ops = &qeth_l3_ethtool_ops; 2377 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 2378 NETIF_F_HW_VLAN_CTAG_RX | 2379 NETIF_F_HW_VLAN_CTAG_FILTER; 2380 2381 netif_keep_dst(card->dev); 2382 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) 2383 netif_set_gso_max_size(card->dev, 2384 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1)); 2385 2386 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 2387 rc = register_netdev(card->dev); 2388 if (!rc && carrier_ok) 2389 netif_carrier_on(card->dev); 2390 2391 out: 2392 if (rc) 2393 card->dev->netdev_ops = NULL; 2394 return rc; 2395 } 2396 2397 static const struct device_type qeth_l3_devtype = { 2398 .name = "qeth_layer3", 2399 .groups = qeth_l3_attr_groups, 2400 }; 2401 2402 static int qeth_l3_probe_device(struct ccwgroup_device *gdev) 2403 { 2404 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2405 int rc; 2406 2407 if (gdev->dev.type == &qeth_generic_devtype) { 2408 rc = qeth_l3_create_device_attributes(&gdev->dev); 2409 if (rc) 2410 return rc; 2411 } 2412 hash_init(card->ip_htable); 2413 hash_init(card->ip_mc_htable); 2414 card->info.hwtrap = 0; 2415 return 0; 2416 } 2417 2418 static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) 2419 { 2420 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 2421 2422 if (cgdev->dev.type == &qeth_generic_devtype) 2423 qeth_l3_remove_device_attributes(&cgdev->dev); 2424 2425 qeth_set_allowed_threads(card, 0, 1); 2426 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 2427 2428 if (cgdev->state == CCWGROUP_ONLINE) 2429 qeth_l3_set_offline(cgdev); 2430 2431 if (qeth_netdev_is_registered(card->dev)) 2432 unregister_netdev(card->dev); 2433 qeth_l3_clear_ip_htable(card, 0); 2434 qeth_l3_clear_ipato_list(card); 2435 } 2436 2437 static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) 2438 { 2439 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2440 int rc = 0; 2441 enum qeth_card_states recover_flag; 2442 bool carrier_ok; 2443 2444 mutex_lock(&card->discipline_mutex); 2445 mutex_lock(&card->conf_mutex); 2446 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 2447 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 2448 2449 recover_flag = card->state; 2450 rc = qeth_core_hardsetup_card(card, &carrier_ok); 2451 if (rc) { 2452 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 2453 rc = -ENODEV; 2454 goto out_remove; 2455 } 2456 2457 rc = qeth_l3_setup_netdev(card, carrier_ok); 2458 if (rc) 2459 goto out_remove; 2460 2461 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 2462 if (card->info.hwtrap && 2463 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 2464 card->info.hwtrap = 0; 2465 } else 2466 card->info.hwtrap = 0; 2467 2468 card->state = CARD_STATE_HARDSETUP; 2469 qeth_print_status_message(card); 2470 2471 /* softsetup */ 2472 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 2473 2474 rc = qeth_l3_setadapter_parms(card); 2475 if (rc) 2476 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 2477 if (!card->options.sniffer) { 2478 rc = qeth_l3_start_ipassists(card); 2479 if (rc) { 2480 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); 2481 goto out_remove; 2482 } 2483 rc = qeth_l3_setrouting_v4(card); 2484 if (rc) 2485 QETH_DBF_TEXT_(SETUP, 2, "4err%04x", rc); 2486 rc = qeth_l3_setrouting_v6(card); 2487 if (rc) 2488 QETH_DBF_TEXT_(SETUP, 2, "5err%04x", rc); 2489 } 2490 netif_tx_disable(card->dev); 2491 2492 rc = qeth_init_qdio_queues(card); 2493 if (rc) { 2494 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 2495 rc = -ENODEV; 2496 goto out_remove; 2497 } 2498 card->state = CARD_STATE_SOFTSETUP; 2499 2500 qeth_set_allowed_threads(card, 0xffffffff, 0); 2501 qeth_l3_recover_ip(card); 2502 2503 qeth_enable_hw_features(card->dev); 2504 if (recover_flag == CARD_STATE_RECOVER) { 2505 rtnl_lock(); 2506 if (recovery_mode) { 2507 __qeth_l3_open(card->dev); 2508 qeth_l3_set_rx_mode(card->dev); 2509 } else { 2510 dev_open(card->dev); 2511 } 2512 rtnl_unlock(); 2513 } 2514 qeth_trace_features(card); 2515 /* let user_space know that device is online */ 2516 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 2517 mutex_unlock(&card->conf_mutex); 2518 mutex_unlock(&card->discipline_mutex); 2519 return 0; 2520 out_remove: 2521 qeth_l3_stop_card(card, 0); 2522 ccw_device_set_offline(CARD_DDEV(card)); 2523 ccw_device_set_offline(CARD_WDEV(card)); 2524 ccw_device_set_offline(CARD_RDEV(card)); 2525 qdio_free(CARD_DDEV(card)); 2526 if (recover_flag == CARD_STATE_RECOVER) 2527 card->state = CARD_STATE_RECOVER; 2528 else 2529 card->state = CARD_STATE_DOWN; 2530 mutex_unlock(&card->conf_mutex); 2531 mutex_unlock(&card->discipline_mutex); 2532 return rc; 2533 } 2534 2535 static int qeth_l3_set_online(struct ccwgroup_device *gdev) 2536 { 2537 return __qeth_l3_set_online(gdev, 0); 2538 } 2539 2540 static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev, 2541 int recovery_mode) 2542 { 2543 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 2544 int rc = 0, rc2 = 0, rc3 = 0; 2545 enum qeth_card_states recover_flag; 2546 2547 mutex_lock(&card->discipline_mutex); 2548 mutex_lock(&card->conf_mutex); 2549 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 2550 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 2551 2552 netif_carrier_off(card->dev); 2553 recover_flag = card->state; 2554 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 2555 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 2556 card->info.hwtrap = 1; 2557 } 2558 qeth_l3_stop_card(card, recovery_mode); 2559 if ((card->options.cq == QETH_CQ_ENABLED) && card->dev) { 2560 rtnl_lock(); 2561 call_netdevice_notifiers(NETDEV_REBOOT, card->dev); 2562 rtnl_unlock(); 2563 } 2564 rc = ccw_device_set_offline(CARD_DDEV(card)); 2565 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 2566 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 2567 if (!rc) 2568 rc = (rc2) ? rc2 : rc3; 2569 if (rc) 2570 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 2571 qdio_free(CARD_DDEV(card)); 2572 if (recover_flag == CARD_STATE_UP) 2573 card->state = CARD_STATE_RECOVER; 2574 /* let user_space know that device is offline */ 2575 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 2576 mutex_unlock(&card->conf_mutex); 2577 mutex_unlock(&card->discipline_mutex); 2578 return 0; 2579 } 2580 2581 static int qeth_l3_set_offline(struct ccwgroup_device *cgdev) 2582 { 2583 return __qeth_l3_set_offline(cgdev, 0); 2584 } 2585 2586 static int qeth_l3_recover(void *ptr) 2587 { 2588 struct qeth_card *card; 2589 int rc = 0; 2590 2591 card = (struct qeth_card *) ptr; 2592 QETH_CARD_TEXT(card, 2, "recover1"); 2593 QETH_CARD_HEX(card, 2, &card, sizeof(void *)); 2594 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 2595 return 0; 2596 QETH_CARD_TEXT(card, 2, "recover2"); 2597 dev_warn(&card->gdev->dev, 2598 "A recovery process has been started for the device\n"); 2599 qeth_set_recovery_task(card); 2600 __qeth_l3_set_offline(card->gdev, 1); 2601 rc = __qeth_l3_set_online(card->gdev, 1); 2602 if (!rc) 2603 dev_info(&card->gdev->dev, 2604 "Device successfully recovered!\n"); 2605 else { 2606 qeth_close_dev(card); 2607 dev_warn(&card->gdev->dev, "The qeth device driver " 2608 "failed to recover an error on the device\n"); 2609 } 2610 qeth_clear_recovery_task(card); 2611 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 2612 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 2613 return 0; 2614 } 2615 2616 static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev) 2617 { 2618 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2619 2620 netif_device_detach(card->dev); 2621 qeth_set_allowed_threads(card, 0, 1); 2622 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 2623 if (gdev->state == CCWGROUP_OFFLINE) 2624 return 0; 2625 if (card->state == CARD_STATE_UP) { 2626 if (card->info.hwtrap) 2627 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 2628 __qeth_l3_set_offline(card->gdev, 1); 2629 } else 2630 __qeth_l3_set_offline(card->gdev, 0); 2631 return 0; 2632 } 2633 2634 static int qeth_l3_pm_resume(struct ccwgroup_device *gdev) 2635 { 2636 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2637 int rc = 0; 2638 2639 if (card->state == CARD_STATE_RECOVER) { 2640 rc = __qeth_l3_set_online(card->gdev, 1); 2641 if (rc) { 2642 rtnl_lock(); 2643 dev_close(card->dev); 2644 rtnl_unlock(); 2645 } 2646 } else 2647 rc = __qeth_l3_set_online(card->gdev, 0); 2648 2649 qeth_set_allowed_threads(card, 0xffffffff, 0); 2650 netif_device_attach(card->dev); 2651 if (rc) 2652 dev_warn(&card->gdev->dev, "The qeth device driver " 2653 "failed to recover an error on the device\n"); 2654 return rc; 2655 } 2656 2657 /* Returns zero if the command is successfully "consumed" */ 2658 static int qeth_l3_control_event(struct qeth_card *card, 2659 struct qeth_ipa_cmd *cmd) 2660 { 2661 return 1; 2662 } 2663 2664 struct qeth_discipline qeth_l3_discipline = { 2665 .devtype = &qeth_l3_devtype, 2666 .process_rx_buffer = qeth_l3_process_inbound_buffer, 2667 .recover = qeth_l3_recover, 2668 .setup = qeth_l3_probe_device, 2669 .remove = qeth_l3_remove_device, 2670 .set_online = qeth_l3_set_online, 2671 .set_offline = qeth_l3_set_offline, 2672 .freeze = qeth_l3_pm_suspend, 2673 .thaw = qeth_l3_pm_resume, 2674 .restore = qeth_l3_pm_resume, 2675 .do_ioctl = qeth_l3_do_ioctl, 2676 .control_event_handler = qeth_l3_control_event, 2677 }; 2678 EXPORT_SYMBOL_GPL(qeth_l3_discipline); 2679 2680 static int qeth_l3_handle_ip_event(struct qeth_card *card, 2681 struct qeth_ipaddr *addr, 2682 unsigned long event) 2683 { 2684 switch (event) { 2685 case NETDEV_UP: 2686 spin_lock_bh(&card->ip_lock); 2687 qeth_l3_add_ip(card, addr); 2688 spin_unlock_bh(&card->ip_lock); 2689 return NOTIFY_OK; 2690 case NETDEV_DOWN: 2691 spin_lock_bh(&card->ip_lock); 2692 qeth_l3_delete_ip(card, addr); 2693 spin_unlock_bh(&card->ip_lock); 2694 return NOTIFY_OK; 2695 default: 2696 return NOTIFY_DONE; 2697 } 2698 } 2699 2700 static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) 2701 { 2702 if (is_vlan_dev(dev)) 2703 dev = vlan_dev_real_dev(dev); 2704 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops || 2705 dev->netdev_ops == &qeth_l3_netdev_ops) 2706 return (struct qeth_card *) dev->ml_priv; 2707 return NULL; 2708 } 2709 2710 static int qeth_l3_ip_event(struct notifier_block *this, 2711 unsigned long event, void *ptr) 2712 { 2713 2714 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 2715 struct net_device *dev = ifa->ifa_dev->dev; 2716 struct qeth_ipaddr addr; 2717 struct qeth_card *card; 2718 2719 if (dev_net(dev) != &init_net) 2720 return NOTIFY_DONE; 2721 2722 card = qeth_l3_get_card_from_dev(dev); 2723 if (!card) 2724 return NOTIFY_DONE; 2725 QETH_CARD_TEXT(card, 3, "ipevent"); 2726 2727 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); 2728 addr.u.a4.addr = be32_to_cpu(ifa->ifa_address); 2729 addr.u.a4.mask = be32_to_cpu(ifa->ifa_mask); 2730 2731 return qeth_l3_handle_ip_event(card, &addr, event); 2732 } 2733 2734 static struct notifier_block qeth_l3_ip_notifier = { 2735 qeth_l3_ip_event, 2736 NULL, 2737 }; 2738 2739 static int qeth_l3_ip6_event(struct notifier_block *this, 2740 unsigned long event, void *ptr) 2741 { 2742 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 2743 struct net_device *dev = ifa->idev->dev; 2744 struct qeth_ipaddr addr; 2745 struct qeth_card *card; 2746 2747 card = qeth_l3_get_card_from_dev(dev); 2748 if (!card) 2749 return NOTIFY_DONE; 2750 QETH_CARD_TEXT(card, 3, "ip6event"); 2751 if (!qeth_is_supported(card, IPA_IPV6)) 2752 return NOTIFY_DONE; 2753 2754 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 2755 addr.u.a6.addr = ifa->addr; 2756 addr.u.a6.pfxlen = ifa->prefix_len; 2757 2758 return qeth_l3_handle_ip_event(card, &addr, event); 2759 } 2760 2761 static struct notifier_block qeth_l3_ip6_notifier = { 2762 qeth_l3_ip6_event, 2763 NULL, 2764 }; 2765 2766 static int qeth_l3_register_notifiers(void) 2767 { 2768 int rc; 2769 2770 QETH_DBF_TEXT(SETUP, 5, "regnotif"); 2771 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); 2772 if (rc) 2773 return rc; 2774 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); 2775 if (rc) { 2776 unregister_inetaddr_notifier(&qeth_l3_ip_notifier); 2777 return rc; 2778 } 2779 return 0; 2780 } 2781 2782 static void qeth_l3_unregister_notifiers(void) 2783 { 2784 QETH_DBF_TEXT(SETUP, 5, "unregnot"); 2785 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); 2786 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); 2787 } 2788 2789 static int __init qeth_l3_init(void) 2790 { 2791 pr_info("register layer 3 discipline\n"); 2792 return qeth_l3_register_notifiers(); 2793 } 2794 2795 static void __exit qeth_l3_exit(void) 2796 { 2797 qeth_l3_unregister_notifiers(); 2798 pr_info("unregister layer 3 discipline\n"); 2799 } 2800 2801 module_init(qeth_l3_init); 2802 module_exit(qeth_l3_exit); 2803 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2804 MODULE_DESCRIPTION("qeth layer 3 discipline"); 2805 MODULE_LICENSE("GPL"); 2806