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 40static int qeth_l3_register_addr_entry(struct qeth_card *, 41 struct qeth_ipaddr *); 42static int qeth_l3_deregister_addr_entry(struct qeth_card *, 43 struct qeth_ipaddr *); 44 45int 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 54static 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 72static 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 86static 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 123static 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 160static 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 222static 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 234static 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 246static 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 } else { 261 /* prepare for recovery */ 262 addr->disp_flag = QETH_DISP_ADDR_ADD; 263 } 264 } 265 266 mutex_unlock(&card->ip_lock); 267} 268 269static void qeth_l3_recover_ip(struct qeth_card *card) 270{ 271 struct qeth_ipaddr *addr; 272 struct hlist_node *tmp; 273 int i; 274 int rc; 275 276 QETH_CARD_TEXT(card, 4, "recovrip"); 277 278 mutex_lock(&card->ip_lock); 279 280 hash_for_each_safe(card->ip_htable, i, tmp, addr, hnode) { 281 if (addr->disp_flag == QETH_DISP_ADDR_ADD) { 282 rc = qeth_l3_register_addr_entry(card, addr); 283 284 if (!rc || rc == -EADDRINUSE || rc == -ENETDOWN) { 285 /* keep it in the records */ 286 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 287 } else { 288 /* bad address */ 289 hash_del(&addr->hnode); 290 kfree(addr); 291 } 292 } 293 } 294 295 mutex_unlock(&card->ip_lock); 296} 297 298static int qeth_l3_setdelip_cb(struct qeth_card *card, struct qeth_reply *reply, 299 unsigned long data) 300{ 301 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 302 303 switch (cmd->hdr.return_code) { 304 case IPA_RC_SUCCESS: 305 return 0; 306 case IPA_RC_DUPLICATE_IP_ADDRESS: 307 return -EADDRINUSE; 308 case IPA_RC_MC_ADDR_NOT_FOUND: 309 return -ENOENT; 310 case IPA_RC_LAN_OFFLINE: 311 return -ENETDOWN; 312 default: 313 return -EIO; 314 } 315} 316 317static int qeth_l3_send_setdelmc(struct qeth_card *card, 318 struct qeth_ipaddr *addr, 319 enum qeth_ipa_cmds ipacmd) 320{ 321 struct qeth_cmd_buffer *iob; 322 struct qeth_ipa_cmd *cmd; 323 324 QETH_CARD_TEXT(card, 4, "setdelmc"); 325 326 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto, 327 IPA_DATA_SIZEOF(setdelipm)); 328 if (!iob) 329 return -ENOMEM; 330 cmd = __ipa_cmd(iob); 331 if (addr->proto == QETH_PROT_IPV6) { 332 cmd->data.setdelipm.ip = addr->u.a6.addr; 333 ipv6_eth_mc_map(&addr->u.a6.addr, cmd->data.setdelipm.mac); 334 } else { 335 cmd->data.setdelipm.ip.s6_addr32[3] = addr->u.a4.addr; 336 ip_eth_mc_map(addr->u.a4.addr, cmd->data.setdelipm.mac); 337 } 338 339 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); 340} 341 342static void qeth_l3_set_ipv6_prefix(struct in6_addr *prefix, unsigned int len) 343{ 344 unsigned int i = 0; 345 346 while (len && i < 4) { 347 int mask_len = min_t(int, len, 32); 348 349 prefix->s6_addr32[i] = inet_make_mask(mask_len); 350 len -= mask_len; 351 i++; 352 } 353} 354 355static u32 qeth_l3_get_setdelip_flags(struct qeth_ipaddr *addr, bool set) 356{ 357 switch (addr->type) { 358 case QETH_IP_TYPE_RXIP: 359 return (set) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 360 case QETH_IP_TYPE_VIPA: 361 return (set) ? QETH_IPA_SETIP_VIPA_FLAG : 362 QETH_IPA_DELIP_VIPA_FLAG; 363 default: 364 return (set && addr->ipato) ? QETH_IPA_SETIP_TAKEOVER_FLAG : 0; 365 } 366} 367 368static int qeth_l3_send_setdelip(struct qeth_card *card, 369 struct qeth_ipaddr *addr, 370 enum qeth_ipa_cmds ipacmd) 371{ 372 struct qeth_cmd_buffer *iob; 373 struct qeth_ipa_cmd *cmd; 374 u32 flags; 375 376 QETH_CARD_TEXT(card, 4, "setdelip"); 377 378 iob = qeth_ipa_alloc_cmd(card, ipacmd, addr->proto, 379 IPA_DATA_SIZEOF(setdelip6)); 380 if (!iob) 381 return -ENOMEM; 382 cmd = __ipa_cmd(iob); 383 384 flags = qeth_l3_get_setdelip_flags(addr, ipacmd == IPA_CMD_SETIP); 385 QETH_CARD_TEXT_(card, 4, "flags%02X", flags); 386 387 if (addr->proto == QETH_PROT_IPV6) { 388 cmd->data.setdelip6.addr = addr->u.a6.addr; 389 qeth_l3_set_ipv6_prefix(&cmd->data.setdelip6.prefix, 390 addr->u.a6.pfxlen); 391 cmd->data.setdelip6.flags = flags; 392 } else { 393 cmd->data.setdelip4.addr = addr->u.a4.addr; 394 cmd->data.setdelip4.mask = addr->u.a4.mask; 395 cmd->data.setdelip4.flags = flags; 396 } 397 398 return qeth_send_ipa_cmd(card, iob, qeth_l3_setdelip_cb, NULL); 399} 400 401static int qeth_l3_send_setrouting(struct qeth_card *card, 402 enum qeth_routing_types type, enum qeth_prot_versions prot) 403{ 404 int rc; 405 struct qeth_ipa_cmd *cmd; 406 struct qeth_cmd_buffer *iob; 407 408 QETH_CARD_TEXT(card, 4, "setroutg"); 409 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETRTG, prot, 410 IPA_DATA_SIZEOF(setrtg)); 411 if (!iob) 412 return -ENOMEM; 413 cmd = __ipa_cmd(iob); 414 cmd->data.setrtg.type = (type); 415 rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); 416 417 return rc; 418} 419 420static int qeth_l3_correct_routing_type(struct qeth_card *card, 421 enum qeth_routing_types *type, enum qeth_prot_versions prot) 422{ 423 if (IS_IQD(card)) { 424 switch (*type) { 425 case NO_ROUTER: 426 case PRIMARY_CONNECTOR: 427 case SECONDARY_CONNECTOR: 428 case MULTICAST_ROUTER: 429 return 0; 430 default: 431 goto out_inval; 432 } 433 } else { 434 switch (*type) { 435 case NO_ROUTER: 436 case PRIMARY_ROUTER: 437 case SECONDARY_ROUTER: 438 return 0; 439 case MULTICAST_ROUTER: 440 if (qeth_is_ipafunc_supported(card, prot, 441 IPA_OSA_MC_ROUTER)) 442 return 0; 443 default: 444 goto out_inval; 445 } 446 } 447out_inval: 448 *type = NO_ROUTER; 449 return -EINVAL; 450} 451 452int qeth_l3_setrouting_v4(struct qeth_card *card) 453{ 454 int rc; 455 456 QETH_CARD_TEXT(card, 3, "setrtg4"); 457 458 rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, 459 QETH_PROT_IPV4); 460 if (rc) 461 return rc; 462 463 rc = qeth_l3_send_setrouting(card, card->options.route4.type, 464 QETH_PROT_IPV4); 465 if (rc) { 466 card->options.route4.type = NO_ROUTER; 467 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 468 rc, CARD_DEVID(card)); 469 } 470 return rc; 471} 472 473int qeth_l3_setrouting_v6(struct qeth_card *card) 474{ 475 int rc = 0; 476 477 QETH_CARD_TEXT(card, 3, "setrtg6"); 478 479 if (!qeth_is_supported(card, IPA_IPV6)) 480 return 0; 481 rc = qeth_l3_correct_routing_type(card, &card->options.route6.type, 482 QETH_PROT_IPV6); 483 if (rc) 484 return rc; 485 486 rc = qeth_l3_send_setrouting(card, card->options.route6.type, 487 QETH_PROT_IPV6); 488 if (rc) { 489 card->options.route6.type = NO_ROUTER; 490 QETH_DBF_MESSAGE(2, "Error (%#06x) while setting routing type on device %x. Type set to 'no router'.\n", 491 rc, CARD_DEVID(card)); 492 } 493 return rc; 494} 495 496/* 497 * IP address takeover related functions 498 */ 499 500/** 501 * qeth_l3_update_ipato() - Update 'takeover' property, for all NORMAL IPs. 502 * 503 * Caller must hold ip_lock. 504 */ 505void qeth_l3_update_ipato(struct qeth_card *card) 506{ 507 struct qeth_ipaddr *addr; 508 unsigned int i; 509 510 hash_for_each(card->ip_htable, i, addr, hnode) { 511 if (addr->type != QETH_IP_TYPE_NORMAL) 512 continue; 513 addr->ipato = qeth_l3_is_addr_covered_by_ipato(card, addr); 514 } 515} 516 517static void qeth_l3_clear_ipato_list(struct qeth_card *card) 518{ 519 struct qeth_ipato_entry *ipatoe, *tmp; 520 521 mutex_lock(&card->ip_lock); 522 523 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 524 list_del(&ipatoe->entry); 525 kfree(ipatoe); 526 } 527 528 qeth_l3_update_ipato(card); 529 mutex_unlock(&card->ip_lock); 530} 531 532int qeth_l3_add_ipato_entry(struct qeth_card *card, 533 struct qeth_ipato_entry *new) 534{ 535 struct qeth_ipato_entry *ipatoe; 536 int rc = 0; 537 538 QETH_CARD_TEXT(card, 2, "addipato"); 539 540 mutex_lock(&card->ip_lock); 541 542 list_for_each_entry(ipatoe, &card->ipato.entries, entry) { 543 if (ipatoe->proto != new->proto) 544 continue; 545 if (!memcmp(ipatoe->addr, new->addr, 546 (ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16) && 547 (ipatoe->mask_bits == new->mask_bits)) { 548 rc = -EEXIST; 549 break; 550 } 551 } 552 553 if (!rc) { 554 list_add_tail(&new->entry, &card->ipato.entries); 555 qeth_l3_update_ipato(card); 556 } 557 558 mutex_unlock(&card->ip_lock); 559 560 return rc; 561} 562 563int qeth_l3_del_ipato_entry(struct qeth_card *card, 564 enum qeth_prot_versions proto, u8 *addr, 565 unsigned int mask_bits) 566{ 567 struct qeth_ipato_entry *ipatoe, *tmp; 568 int rc = -ENOENT; 569 570 QETH_CARD_TEXT(card, 2, "delipato"); 571 572 mutex_lock(&card->ip_lock); 573 574 list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { 575 if (ipatoe->proto != proto) 576 continue; 577 if (!memcmp(ipatoe->addr, addr, 578 (proto == QETH_PROT_IPV4) ? 4 : 16) && 579 (ipatoe->mask_bits == mask_bits)) { 580 list_del(&ipatoe->entry); 581 qeth_l3_update_ipato(card); 582 kfree(ipatoe); 583 rc = 0; 584 } 585 } 586 587 mutex_unlock(&card->ip_lock); 588 589 return rc; 590} 591 592int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip, 593 enum qeth_ip_types type, 594 enum qeth_prot_versions proto) 595{ 596 struct qeth_ipaddr addr; 597 598 qeth_l3_init_ipaddr(&addr, type, proto); 599 if (proto == QETH_PROT_IPV4) 600 memcpy(&addr.u.a4.addr, ip, 4); 601 else 602 memcpy(&addr.u.a6.addr, ip, 16); 603 604 return qeth_l3_modify_ip(card, &addr, add); 605} 606 607int qeth_l3_modify_hsuid(struct qeth_card *card, bool add) 608{ 609 struct qeth_ipaddr addr; 610 unsigned int i; 611 612 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 613 addr.u.a6.addr.s6_addr[0] = 0xfe; 614 addr.u.a6.addr.s6_addr[1] = 0x80; 615 for (i = 0; i < 8; i++) 616 addr.u.a6.addr.s6_addr[8+i] = card->options.hsuid[i]; 617 618 return qeth_l3_modify_ip(card, &addr, add); 619} 620 621static int qeth_l3_register_addr_entry(struct qeth_card *card, 622 struct qeth_ipaddr *addr) 623{ 624 char buf[50]; 625 int rc = 0; 626 int cnt = 3; 627 628 if (card->options.sniffer) 629 return 0; 630 631 if (addr->proto == QETH_PROT_IPV4) { 632 QETH_CARD_TEXT(card, 2, "setaddr4"); 633 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 634 } else if (addr->proto == QETH_PROT_IPV6) { 635 QETH_CARD_TEXT(card, 2, "setaddr6"); 636 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 637 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 638 } else { 639 QETH_CARD_TEXT(card, 2, "setaddr?"); 640 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 641 } 642 do { 643 if (addr->is_multicast) 644 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); 645 else 646 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP); 647 if (rc) 648 QETH_CARD_TEXT(card, 2, "failed"); 649 } while ((--cnt > 0) && rc); 650 if (rc) { 651 QETH_CARD_TEXT(card, 2, "FAILED"); 652 qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); 653 dev_warn(&card->gdev->dev, 654 "Registering IP address %s failed\n", buf); 655 } 656 return rc; 657} 658 659static int qeth_l3_deregister_addr_entry(struct qeth_card *card, 660 struct qeth_ipaddr *addr) 661{ 662 int rc = 0; 663 664 if (card->options.sniffer) 665 return 0; 666 667 if (addr->proto == QETH_PROT_IPV4) { 668 QETH_CARD_TEXT(card, 2, "deladdr4"); 669 QETH_CARD_HEX(card, 3, &addr->u.a4.addr, sizeof(int)); 670 } else if (addr->proto == QETH_PROT_IPV6) { 671 QETH_CARD_TEXT(card, 2, "deladdr6"); 672 QETH_CARD_HEX(card, 3, &addr->u.a6.addr, 8); 673 QETH_CARD_HEX(card, 3, ((char *)&addr->u.a6.addr) + 8, 8); 674 } else { 675 QETH_CARD_TEXT(card, 2, "deladdr?"); 676 QETH_CARD_HEX(card, 3, addr, sizeof(struct qeth_ipaddr)); 677 } 678 if (addr->is_multicast) 679 rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); 680 else 681 rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP); 682 if (rc) 683 QETH_CARD_TEXT(card, 2, "failed"); 684 685 return rc; 686} 687 688static int qeth_l3_setadapter_parms(struct qeth_card *card) 689{ 690 int rc = 0; 691 692 QETH_CARD_TEXT(card, 2, "setadprm"); 693 694 if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { 695 rc = qeth_setadpparms_change_macaddr(card); 696 if (rc) 697 dev_warn(&card->gdev->dev, "Reading the adapter MAC" 698 " address failed\n"); 699 } 700 701 return rc; 702} 703 704static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) 705{ 706 int rc; 707 708 QETH_CARD_TEXT(card, 3, "ipaarp"); 709 710 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 711 dev_info(&card->gdev->dev, 712 "ARP processing not supported on %s!\n", 713 netdev_name(card->dev)); 714 return 0; 715 } 716 rc = qeth_send_simple_setassparms(card, IPA_ARP_PROCESSING, 717 IPA_CMD_ASS_START, NULL); 718 if (rc) { 719 dev_warn(&card->gdev->dev, 720 "Starting ARP processing support for %s failed\n", 721 netdev_name(card->dev)); 722 } 723 return rc; 724} 725 726static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) 727{ 728 int rc; 729 730 QETH_CARD_TEXT(card, 3, "stsrcmac"); 731 732 if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { 733 dev_info(&card->gdev->dev, 734 "Inbound source MAC-address not supported on %s\n", 735 netdev_name(card->dev)); 736 return -EOPNOTSUPP; 737 } 738 739 rc = qeth_send_simple_setassparms(card, IPA_SOURCE_MAC, 740 IPA_CMD_ASS_START, NULL); 741 if (rc) 742 dev_warn(&card->gdev->dev, 743 "Starting source MAC-address support for %s failed\n", 744 netdev_name(card->dev)); 745 return rc; 746} 747 748static int qeth_l3_start_ipa_vlan(struct qeth_card *card) 749{ 750 int rc = 0; 751 752 QETH_CARD_TEXT(card, 3, "strtvlan"); 753 754 if (!qeth_is_supported(card, IPA_FULL_VLAN)) { 755 dev_info(&card->gdev->dev, 756 "VLAN not supported on %s\n", netdev_name(card->dev)); 757 return -EOPNOTSUPP; 758 } 759 760 rc = qeth_send_simple_setassparms(card, IPA_VLAN_PRIO, 761 IPA_CMD_ASS_START, NULL); 762 if (rc) { 763 dev_warn(&card->gdev->dev, 764 "Starting VLAN support for %s failed\n", 765 netdev_name(card->dev)); 766 } else { 767 dev_info(&card->gdev->dev, "VLAN enabled\n"); 768 } 769 return rc; 770} 771 772static int qeth_l3_start_ipa_multicast(struct qeth_card *card) 773{ 774 int rc; 775 776 QETH_CARD_TEXT(card, 3, "stmcast"); 777 778 if (!qeth_is_supported(card, IPA_MULTICASTING)) { 779 dev_info(&card->gdev->dev, 780 "Multicast not supported on %s\n", 781 netdev_name(card->dev)); 782 return -EOPNOTSUPP; 783 } 784 785 rc = qeth_send_simple_setassparms(card, IPA_MULTICASTING, 786 IPA_CMD_ASS_START, NULL); 787 if (rc) { 788 dev_warn(&card->gdev->dev, 789 "Starting multicast support for %s failed\n", 790 netdev_name(card->dev)); 791 } else { 792 dev_info(&card->gdev->dev, "Multicast enabled\n"); 793 card->dev->flags |= IFF_MULTICAST; 794 } 795 return rc; 796} 797 798static int qeth_l3_softsetup_ipv6(struct qeth_card *card) 799{ 800 u32 ipv6_data = 3; 801 int rc; 802 803 QETH_CARD_TEXT(card, 3, "softipv6"); 804 805 if (IS_IQD(card)) 806 goto out; 807 808 rc = qeth_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START, 809 &ipv6_data); 810 if (rc) { 811 dev_err(&card->gdev->dev, 812 "Activating IPv6 support for %s failed\n", 813 netdev_name(card->dev)); 814 return rc; 815 } 816 rc = qeth_send_simple_setassparms_v6(card, IPA_IPV6, IPA_CMD_ASS_START, 817 NULL); 818 if (rc) { 819 dev_err(&card->gdev->dev, 820 "Activating IPv6 support for %s failed\n", 821 netdev_name(card->dev)); 822 return rc; 823 } 824 rc = qeth_send_simple_setassparms_v6(card, IPA_PASSTHRU, 825 IPA_CMD_ASS_START, NULL); 826 if (rc) { 827 dev_warn(&card->gdev->dev, 828 "Enabling the passthrough mode for %s failed\n", 829 netdev_name(card->dev)); 830 return rc; 831 } 832out: 833 dev_info(&card->gdev->dev, "IPV6 enabled\n"); 834 return 0; 835} 836 837static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) 838{ 839 QETH_CARD_TEXT(card, 3, "strtipv6"); 840 841 if (!qeth_is_supported(card, IPA_IPV6)) { 842 dev_info(&card->gdev->dev, 843 "IPv6 not supported on %s\n", netdev_name(card->dev)); 844 return 0; 845 } 846 return qeth_l3_softsetup_ipv6(card); 847} 848 849static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) 850{ 851 u32 filter_data = 1; 852 int rc; 853 854 QETH_CARD_TEXT(card, 3, "stbrdcst"); 855 card->info.broadcast_capable = 0; 856 if (!qeth_is_supported(card, IPA_FILTERING)) { 857 dev_info(&card->gdev->dev, 858 "Broadcast not supported on %s\n", 859 netdev_name(card->dev)); 860 rc = -EOPNOTSUPP; 861 goto out; 862 } 863 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 864 IPA_CMD_ASS_START, NULL); 865 if (rc) { 866 dev_warn(&card->gdev->dev, 867 "Enabling broadcast filtering for %s failed\n", 868 netdev_name(card->dev)); 869 goto out; 870 } 871 872 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 873 IPA_CMD_ASS_CONFIGURE, &filter_data); 874 if (rc) { 875 dev_warn(&card->gdev->dev, 876 "Setting up broadcast filtering for %s failed\n", 877 netdev_name(card->dev)); 878 goto out; 879 } 880 card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; 881 dev_info(&card->gdev->dev, "Broadcast enabled\n"); 882 rc = qeth_send_simple_setassparms(card, IPA_FILTERING, 883 IPA_CMD_ASS_ENABLE, &filter_data); 884 if (rc) { 885 dev_warn(&card->gdev->dev, 886 "Setting up broadcast echo filtering for %s failed\n", 887 netdev_name(card->dev)); 888 goto out; 889 } 890 card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; 891out: 892 if (card->info.broadcast_capable) 893 card->dev->flags |= IFF_BROADCAST; 894 else 895 card->dev->flags &= ~IFF_BROADCAST; 896 return rc; 897} 898 899static void qeth_l3_start_ipassists(struct qeth_card *card) 900{ 901 QETH_CARD_TEXT(card, 3, "strtipas"); 902 903 qeth_l3_start_ipa_arp_processing(card); /* go on*/ 904 qeth_l3_start_ipa_source_mac(card); /* go on*/ 905 qeth_l3_start_ipa_vlan(card); /* go on*/ 906 qeth_l3_start_ipa_multicast(card); /* go on*/ 907 qeth_l3_start_ipa_ipv6(card); /* go on*/ 908 qeth_l3_start_ipa_broadcast(card); /* go on*/ 909} 910 911static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, 912 struct qeth_reply *reply, unsigned long data) 913{ 914 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 915 916 if (cmd->hdr.return_code) 917 return -EIO; 918 if (!is_valid_ether_addr(cmd->data.create_destroy_addr.mac_addr)) 919 return -EADDRNOTAVAIL; 920 921 ether_addr_copy(card->dev->dev_addr, 922 cmd->data.create_destroy_addr.mac_addr); 923 return 0; 924} 925 926static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) 927{ 928 int rc = 0; 929 struct qeth_cmd_buffer *iob; 930 931 QETH_CARD_TEXT(card, 2, "hsrmac"); 932 933 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6, 934 IPA_DATA_SIZEOF(create_destroy_addr)); 935 if (!iob) 936 return -ENOMEM; 937 938 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, 939 NULL); 940 return rc; 941} 942 943static int qeth_l3_get_unique_id_cb(struct qeth_card *card, 944 struct qeth_reply *reply, unsigned long data) 945{ 946 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 947 u16 *uid = reply->param; 948 949 if (cmd->hdr.return_code == 0) { 950 *uid = cmd->data.create_destroy_addr.uid; 951 return 0; 952 } 953 954 dev_warn(&card->gdev->dev, "The network adapter failed to generate a unique ID\n"); 955 return -EIO; 956} 957 958static u16 qeth_l3_get_unique_id(struct qeth_card *card, u16 uid) 959{ 960 struct qeth_cmd_buffer *iob; 961 962 QETH_CARD_TEXT(card, 2, "guniqeid"); 963 964 if (!qeth_is_supported(card, IPA_IPV6)) 965 goto out; 966 967 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6, 968 IPA_DATA_SIZEOF(create_destroy_addr)); 969 if (!iob) 970 goto out; 971 972 __ipa_cmd(iob)->data.create_destroy_addr.uid = uid; 973 qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, &uid); 974 975out: 976 return uid; 977} 978 979static int 980qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply, 981 unsigned long data) 982{ 983 struct qeth_ipa_cmd *cmd; 984 __u16 rc; 985 986 QETH_CARD_TEXT(card, 2, "diastrcb"); 987 988 cmd = (struct qeth_ipa_cmd *)data; 989 rc = cmd->hdr.return_code; 990 if (rc) 991 QETH_CARD_TEXT_(card, 2, "dxter%x", rc); 992 switch (cmd->data.diagass.action) { 993 case QETH_DIAGS_CMD_TRACE_QUERY: 994 break; 995 case QETH_DIAGS_CMD_TRACE_DISABLE: 996 switch (rc) { 997 case 0: 998 case IPA_RC_INVALID_SUBCMD: 999 card->info.promisc_mode = SET_PROMISC_MODE_OFF; 1000 dev_info(&card->gdev->dev, "The HiperSockets network " 1001 "traffic analyzer is deactivated\n"); 1002 break; 1003 default: 1004 break; 1005 } 1006 break; 1007 case QETH_DIAGS_CMD_TRACE_ENABLE: 1008 switch (rc) { 1009 case 0: 1010 card->info.promisc_mode = SET_PROMISC_MODE_ON; 1011 dev_info(&card->gdev->dev, "The HiperSockets network " 1012 "traffic analyzer is activated\n"); 1013 break; 1014 case IPA_RC_HARDWARE_AUTH_ERROR: 1015 dev_warn(&card->gdev->dev, "The device is not " 1016 "authorized to run as a HiperSockets network " 1017 "traffic analyzer\n"); 1018 break; 1019 case IPA_RC_TRACE_ALREADY_ACTIVE: 1020 dev_warn(&card->gdev->dev, "A HiperSockets " 1021 "network traffic analyzer is already " 1022 "active in the HiperSockets LAN\n"); 1023 break; 1024 default: 1025 break; 1026 } 1027 break; 1028 default: 1029 QETH_DBF_MESSAGE(2, "Unknown sniffer action (%#06x) on device %x\n", 1030 cmd->data.diagass.action, CARD_DEVID(card)); 1031 } 1032 1033 return rc ? -EIO : 0; 1034} 1035 1036static int 1037qeth_diags_trace(struct qeth_card *card, enum qeth_diags_trace_cmds diags_cmd) 1038{ 1039 struct qeth_cmd_buffer *iob; 1040 struct qeth_ipa_cmd *cmd; 1041 1042 QETH_CARD_TEXT(card, 2, "diagtrac"); 1043 1044 iob = qeth_get_diag_cmd(card, QETH_DIAGS_CMD_TRACE, 0); 1045 if (!iob) 1046 return -ENOMEM; 1047 cmd = __ipa_cmd(iob); 1048 cmd->data.diagass.type = QETH_DIAGS_TYPE_HIPERSOCKET; 1049 cmd->data.diagass.action = diags_cmd; 1050 return qeth_send_ipa_cmd(card, iob, qeth_diags_trace_cb, NULL); 1051} 1052 1053static int qeth_l3_add_mcast_rtnl(struct net_device *dev, int vid, void *arg) 1054{ 1055 struct qeth_card *card = arg; 1056 struct inet6_dev *in6_dev; 1057 struct in_device *in4_dev; 1058 struct qeth_ipaddr *ipm; 1059 struct qeth_ipaddr tmp; 1060 struct ip_mc_list *im4; 1061 struct ifmcaddr6 *im6; 1062 1063 QETH_CARD_TEXT(card, 4, "addmc"); 1064 1065 if (!dev || !(dev->flags & IFF_UP)) 1066 goto out; 1067 1068 in4_dev = __in_dev_get_rtnl(dev); 1069 if (!in4_dev) 1070 goto walk_ipv6; 1071 1072 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); 1073 tmp.disp_flag = QETH_DISP_ADDR_ADD; 1074 tmp.is_multicast = 1; 1075 1076 for (im4 = rtnl_dereference(in4_dev->mc_list); im4 != NULL; 1077 im4 = rtnl_dereference(im4->next_rcu)) { 1078 tmp.u.a4.addr = im4->multiaddr; 1079 1080 ipm = qeth_l3_find_addr_by_ip(card, &tmp); 1081 if (ipm) { 1082 /* for mcast, by-IP match means full match */ 1083 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1084 continue; 1085 } 1086 1087 ipm = kmemdup(&tmp, sizeof(tmp), GFP_KERNEL); 1088 if (!ipm) 1089 continue; 1090 1091 hash_add(card->rx_mode_addrs, &ipm->hnode, 1092 qeth_l3_ipaddr_hash(ipm)); 1093 } 1094 1095walk_ipv6: 1096 if (!qeth_is_supported(card, IPA_IPV6)) 1097 goto out; 1098 1099 in6_dev = __in6_dev_get(dev); 1100 if (!in6_dev) 1101 goto out; 1102 1103 qeth_l3_init_ipaddr(&tmp, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV6); 1104 tmp.disp_flag = QETH_DISP_ADDR_ADD; 1105 tmp.is_multicast = 1; 1106 1107 read_lock_bh(&in6_dev->lock); 1108 for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { 1109 tmp.u.a6.addr = im6->mca_addr; 1110 1111 ipm = qeth_l3_find_addr_by_ip(card, &tmp); 1112 if (ipm) { 1113 /* for mcast, by-IP match means full match */ 1114 ipm->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 1115 continue; 1116 } 1117 1118 ipm = kmemdup(&tmp, sizeof(tmp), GFP_ATOMIC); 1119 if (!ipm) 1120 continue; 1121 1122 hash_add(card->rx_mode_addrs, &ipm->hnode, 1123 qeth_l3_ipaddr_hash(ipm)); 1124 1125 } 1126 read_unlock_bh(&in6_dev->lock); 1127 1128out: 1129 return 0; 1130} 1131 1132static int qeth_l3_vlan_rx_add_vid(struct net_device *dev, 1133 __be16 proto, u16 vid) 1134{ 1135 struct qeth_card *card = dev->ml_priv; 1136 1137 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 1138 return 0; 1139} 1140 1141static int qeth_l3_vlan_rx_kill_vid(struct net_device *dev, 1142 __be16 proto, u16 vid) 1143{ 1144 struct qeth_card *card = dev->ml_priv; 1145 1146 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 1147 return 0; 1148} 1149 1150static void qeth_l3_set_promisc_mode(struct qeth_card *card) 1151{ 1152 bool enable = card->dev->flags & IFF_PROMISC; 1153 1154 if (card->info.promisc_mode == enable) 1155 return; 1156 1157 if (IS_VM_NIC(card)) { /* Guestlan trace */ 1158 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 1159 qeth_setadp_promisc_mode(card, enable); 1160 } else if (card->options.sniffer && /* HiperSockets trace */ 1161 qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) { 1162 if (enable) { 1163 QETH_CARD_TEXT(card, 3, "+promisc"); 1164 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE); 1165 } else { 1166 QETH_CARD_TEXT(card, 3, "-promisc"); 1167 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 1168 } 1169 } 1170} 1171 1172static void qeth_l3_rx_mode_work(struct work_struct *work) 1173{ 1174 struct qeth_card *card = container_of(work, struct qeth_card, 1175 rx_mode_work); 1176 struct qeth_ipaddr *addr; 1177 struct hlist_node *tmp; 1178 int i, rc; 1179 1180 QETH_CARD_TEXT(card, 3, "setmulti"); 1181 1182 if (!card->options.sniffer) { 1183 rtnl_lock(); 1184 qeth_l3_add_mcast_rtnl(card->dev, 0, card); 1185 if (qeth_is_supported(card, IPA_FULL_VLAN)) 1186 vlan_for_each(card->dev, qeth_l3_add_mcast_rtnl, card); 1187 rtnl_unlock(); 1188 1189 hash_for_each_safe(card->rx_mode_addrs, i, tmp, addr, hnode) { 1190 switch (addr->disp_flag) { 1191 case QETH_DISP_ADDR_DELETE: 1192 rc = qeth_l3_deregister_addr_entry(card, addr); 1193 if (!rc || rc == -ENOENT) { 1194 hash_del(&addr->hnode); 1195 kfree(addr); 1196 } 1197 break; 1198 case QETH_DISP_ADDR_ADD: 1199 rc = qeth_l3_register_addr_entry(card, addr); 1200 if (rc && rc != -ENETDOWN) { 1201 hash_del(&addr->hnode); 1202 kfree(addr); 1203 break; 1204 } 1205 fallthrough; 1206 default: 1207 /* for next call to set_rx_mode(): */ 1208 addr->disp_flag = QETH_DISP_ADDR_DELETE; 1209 } 1210 } 1211 } 1212 1213 qeth_l3_set_promisc_mode(card); 1214} 1215 1216static int qeth_l3_arp_makerc(u16 rc) 1217{ 1218 switch (rc) { 1219 case IPA_RC_SUCCESS: 1220 return 0; 1221 case QETH_IPA_ARP_RC_NOTSUPP: 1222 case QETH_IPA_ARP_RC_Q_NOTSUPP: 1223 return -EOPNOTSUPP; 1224 case QETH_IPA_ARP_RC_OUT_OF_RANGE: 1225 return -EINVAL; 1226 case QETH_IPA_ARP_RC_Q_NO_DATA: 1227 return -ENOENT; 1228 default: 1229 return -EIO; 1230 } 1231} 1232 1233static int qeth_l3_arp_cmd_cb(struct qeth_card *card, struct qeth_reply *reply, 1234 unsigned long data) 1235{ 1236 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1237 1238 qeth_setassparms_cb(card, reply, data); 1239 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1240} 1241 1242static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) 1243{ 1244 struct qeth_cmd_buffer *iob; 1245 int rc; 1246 1247 QETH_CARD_TEXT(card, 3, "arpstnoe"); 1248 1249 /* 1250 * currently GuestLAN only supports the ARP assist function 1251 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; 1252 * thus we say EOPNOTSUPP for this ARP function 1253 */ 1254 if (IS_VM_NIC(card)) 1255 return -EOPNOTSUPP; 1256 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1257 return -EOPNOTSUPP; 1258 } 1259 1260 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1261 IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 1262 SETASS_DATA_SIZEOF(flags_32bit), 1263 QETH_PROT_IPV4); 1264 if (!iob) 1265 return -ENOMEM; 1266 1267 __ipa_cmd(iob)->data.setassparms.data.flags_32bit = (u32) no_entries; 1268 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1269 if (rc) 1270 QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on device %x: %#x\n", 1271 CARD_DEVID(card), rc); 1272 return rc; 1273} 1274 1275static __u32 get_arp_entry_size(struct qeth_card *card, 1276 struct qeth_arp_query_data *qdata, 1277 struct qeth_arp_entrytype *type, __u8 strip_entries) 1278{ 1279 __u32 rc; 1280 __u8 is_hsi; 1281 1282 is_hsi = qdata->reply_bits == 5; 1283 if (type->ip == QETHARP_IP_ADDR_V4) { 1284 QETH_CARD_TEXT(card, 4, "arpev4"); 1285 if (strip_entries) { 1286 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5_short) : 1287 sizeof(struct qeth_arp_qi_entry7_short); 1288 } else { 1289 rc = is_hsi ? sizeof(struct qeth_arp_qi_entry5) : 1290 sizeof(struct qeth_arp_qi_entry7); 1291 } 1292 } else if (type->ip == QETHARP_IP_ADDR_V6) { 1293 QETH_CARD_TEXT(card, 4, "arpev6"); 1294 if (strip_entries) { 1295 rc = is_hsi ? 1296 sizeof(struct qeth_arp_qi_entry5_short_ipv6) : 1297 sizeof(struct qeth_arp_qi_entry7_short_ipv6); 1298 } else { 1299 rc = is_hsi ? 1300 sizeof(struct qeth_arp_qi_entry5_ipv6) : 1301 sizeof(struct qeth_arp_qi_entry7_ipv6); 1302 } 1303 } else { 1304 QETH_CARD_TEXT(card, 4, "arpinv"); 1305 rc = 0; 1306 } 1307 1308 return rc; 1309} 1310 1311static int arpentry_matches_prot(struct qeth_arp_entrytype *type, __u16 prot) 1312{ 1313 return (type->ip == QETHARP_IP_ADDR_V4 && prot == QETH_PROT_IPV4) || 1314 (type->ip == QETHARP_IP_ADDR_V6 && prot == QETH_PROT_IPV6); 1315} 1316 1317static int qeth_l3_arp_query_cb(struct qeth_card *card, 1318 struct qeth_reply *reply, unsigned long data) 1319{ 1320 struct qeth_ipa_cmd *cmd; 1321 struct qeth_arp_query_data *qdata; 1322 struct qeth_arp_query_info *qinfo; 1323 int e; 1324 int entrybytes_done; 1325 int stripped_bytes; 1326 __u8 do_strip_entries; 1327 1328 QETH_CARD_TEXT(card, 3, "arpquecb"); 1329 1330 qinfo = (struct qeth_arp_query_info *) reply->param; 1331 cmd = (struct qeth_ipa_cmd *) data; 1332 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.prot_version); 1333 if (cmd->hdr.return_code) { 1334 QETH_CARD_TEXT(card, 4, "arpcberr"); 1335 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1336 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1337 } 1338 if (cmd->data.setassparms.hdr.return_code) { 1339 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; 1340 QETH_CARD_TEXT(card, 4, "setaperr"); 1341 QETH_CARD_TEXT_(card, 4, "%i", cmd->hdr.return_code); 1342 return qeth_l3_arp_makerc(cmd->hdr.return_code); 1343 } 1344 qdata = &cmd->data.setassparms.data.query_arp; 1345 QETH_CARD_TEXT_(card, 4, "anoen%i", qdata->no_entries); 1346 1347 do_strip_entries = (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) > 0; 1348 stripped_bytes = do_strip_entries ? QETH_QARP_MEDIASPECIFIC_BYTES : 0; 1349 entrybytes_done = 0; 1350 for (e = 0; e < qdata->no_entries; ++e) { 1351 char *cur_entry; 1352 __u32 esize; 1353 struct qeth_arp_entrytype *etype; 1354 1355 cur_entry = &qdata->data + entrybytes_done; 1356 etype = &((struct qeth_arp_qi_entry5 *) cur_entry)->type; 1357 if (!arpentry_matches_prot(etype, cmd->hdr.prot_version)) { 1358 QETH_CARD_TEXT(card, 4, "pmis"); 1359 QETH_CARD_TEXT_(card, 4, "%i", etype->ip); 1360 break; 1361 } 1362 esize = get_arp_entry_size(card, qdata, etype, 1363 do_strip_entries); 1364 QETH_CARD_TEXT_(card, 5, "esz%i", esize); 1365 if (!esize) 1366 break; 1367 1368 if ((qinfo->udata_len - qinfo->udata_offset) < esize) { 1369 QETH_CARD_TEXT_(card, 4, "qaer3%i", -ENOSPC); 1370 memset(qinfo->udata, 0, 4); 1371 return -ENOSPC; 1372 } 1373 1374 memcpy(qinfo->udata + qinfo->udata_offset, 1375 &qdata->data + entrybytes_done + stripped_bytes, 1376 esize); 1377 entrybytes_done += esize + stripped_bytes; 1378 qinfo->udata_offset += esize; 1379 ++qinfo->no_entries; 1380 } 1381 /* check if all replies received ... */ 1382 if (cmd->data.setassparms.hdr.seq_no < 1383 cmd->data.setassparms.hdr.number_of_replies) 1384 return 1; 1385 QETH_CARD_TEXT_(card, 4, "nove%i", qinfo->no_entries); 1386 memcpy(qinfo->udata, &qinfo->no_entries, 4); 1387 /* keep STRIP_ENTRIES flag so the user program can distinguish 1388 * stripped entries from normal ones */ 1389 if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) 1390 qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; 1391 memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); 1392 QETH_CARD_TEXT_(card, 4, "rc%i", 0); 1393 return 0; 1394} 1395 1396static int qeth_l3_query_arp_cache_info(struct qeth_card *card, 1397 enum qeth_prot_versions prot, 1398 struct qeth_arp_query_info *qinfo) 1399{ 1400 struct qeth_cmd_buffer *iob; 1401 struct qeth_ipa_cmd *cmd; 1402 int rc; 1403 1404 QETH_CARD_TEXT_(card, 3, "qarpipv%i", prot); 1405 1406 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1407 IPA_CMD_ASS_ARP_QUERY_INFO, 1408 SETASS_DATA_SIZEOF(query_arp), prot); 1409 if (!iob) 1410 return -ENOMEM; 1411 cmd = __ipa_cmd(iob); 1412 cmd->data.setassparms.data.query_arp.request_bits = 0x000F; 1413 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_query_cb, qinfo); 1414 if (rc) 1415 QETH_DBF_MESSAGE(2, "Error while querying ARP cache on device %x: %#x\n", 1416 CARD_DEVID(card), rc); 1417 return rc; 1418} 1419 1420static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) 1421{ 1422 struct qeth_arp_query_info qinfo = {0, }; 1423 int rc; 1424 1425 QETH_CARD_TEXT(card, 3, "arpquery"); 1426 1427 if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ 1428 IPA_ARP_PROCESSING)) { 1429 QETH_CARD_TEXT(card, 3, "arpqnsup"); 1430 rc = -EOPNOTSUPP; 1431 goto out; 1432 } 1433 /* get size of userspace buffer and mask_bits -> 6 bytes */ 1434 if (copy_from_user(&qinfo, udata, 6)) { 1435 rc = -EFAULT; 1436 goto out; 1437 } 1438 qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); 1439 if (!qinfo.udata) { 1440 rc = -ENOMEM; 1441 goto out; 1442 } 1443 qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; 1444 rc = qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV4, &qinfo); 1445 if (rc) { 1446 if (copy_to_user(udata, qinfo.udata, 4)) 1447 rc = -EFAULT; 1448 goto free_and_out; 1449 } 1450 if (qinfo.mask_bits & QETH_QARP_WITH_IPV6) { 1451 /* fails in case of GuestLAN QDIO mode */ 1452 qeth_l3_query_arp_cache_info(card, QETH_PROT_IPV6, &qinfo); 1453 } 1454 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) { 1455 QETH_CARD_TEXT(card, 4, "qactf"); 1456 rc = -EFAULT; 1457 goto free_and_out; 1458 } 1459 QETH_CARD_TEXT(card, 4, "qacts"); 1460 1461free_and_out: 1462 kfree(qinfo.udata); 1463out: 1464 return rc; 1465} 1466 1467static int qeth_l3_arp_modify_entry(struct qeth_card *card, 1468 struct qeth_arp_cache_entry *entry, 1469 enum qeth_arp_process_subcmds arp_cmd) 1470{ 1471 struct qeth_arp_cache_entry *cmd_entry; 1472 struct qeth_cmd_buffer *iob; 1473 int rc; 1474 1475 if (arp_cmd == IPA_CMD_ASS_ARP_ADD_ENTRY) 1476 QETH_CARD_TEXT(card, 3, "arpadd"); 1477 else 1478 QETH_CARD_TEXT(card, 3, "arpdel"); 1479 1480 /* 1481 * currently GuestLAN only supports the ARP assist function 1482 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; 1483 * thus we say EOPNOTSUPP for this ARP function 1484 */ 1485 if (IS_VM_NIC(card)) 1486 return -EOPNOTSUPP; 1487 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1488 return -EOPNOTSUPP; 1489 } 1490 1491 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd, 1492 SETASS_DATA_SIZEOF(arp_entry), 1493 QETH_PROT_IPV4); 1494 if (!iob) 1495 return -ENOMEM; 1496 1497 cmd_entry = &__ipa_cmd(iob)->data.setassparms.data.arp_entry; 1498 ether_addr_copy(cmd_entry->macaddr, entry->macaddr); 1499 memcpy(cmd_entry->ipaddr, entry->ipaddr, 4); 1500 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1501 if (rc) 1502 QETH_DBF_MESSAGE(2, "Could not modify (cmd: %#x) ARP entry on device %x: %#x\n", 1503 arp_cmd, CARD_DEVID(card), rc); 1504 return rc; 1505} 1506 1507static int qeth_l3_arp_flush_cache(struct qeth_card *card) 1508{ 1509 struct qeth_cmd_buffer *iob; 1510 int rc; 1511 1512 QETH_CARD_TEXT(card, 3, "arpflush"); 1513 1514 /* 1515 * currently GuestLAN only supports the ARP assist function 1516 * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; 1517 * thus we say EOPNOTSUPP for this ARP function 1518 */ 1519 if (IS_VM_NIC(card) || IS_IQD(card)) 1520 return -EOPNOTSUPP; 1521 if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { 1522 return -EOPNOTSUPP; 1523 } 1524 1525 iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, 1526 IPA_CMD_ASS_ARP_FLUSH_CACHE, 0, 1527 QETH_PROT_IPV4); 1528 if (!iob) 1529 return -ENOMEM; 1530 1531 rc = qeth_send_ipa_cmd(card, iob, qeth_l3_arp_cmd_cb, NULL); 1532 if (rc) 1533 QETH_DBF_MESSAGE(2, "Could not flush ARP cache on device %x: %#x\n", 1534 CARD_DEVID(card), rc); 1535 return rc; 1536} 1537 1538static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 1539{ 1540 struct qeth_card *card = dev->ml_priv; 1541 struct qeth_arp_cache_entry arp_entry; 1542 enum qeth_arp_process_subcmds arp_cmd; 1543 int rc = 0; 1544 1545 switch (cmd) { 1546 case SIOC_QETH_ARP_SET_NO_ENTRIES: 1547 if (!capable(CAP_NET_ADMIN)) { 1548 rc = -EPERM; 1549 break; 1550 } 1551 rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); 1552 break; 1553 case SIOC_QETH_ARP_QUERY_INFO: 1554 if (!capable(CAP_NET_ADMIN)) { 1555 rc = -EPERM; 1556 break; 1557 } 1558 rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data); 1559 break; 1560 case SIOC_QETH_ARP_ADD_ENTRY: 1561 case SIOC_QETH_ARP_REMOVE_ENTRY: 1562 if (!capable(CAP_NET_ADMIN)) 1563 return -EPERM; 1564 if (copy_from_user(&arp_entry, rq->ifr_data, sizeof(arp_entry))) 1565 return -EFAULT; 1566 1567 arp_cmd = (cmd == SIOC_QETH_ARP_ADD_ENTRY) ? 1568 IPA_CMD_ASS_ARP_ADD_ENTRY : 1569 IPA_CMD_ASS_ARP_REMOVE_ENTRY; 1570 return qeth_l3_arp_modify_entry(card, &arp_entry, arp_cmd); 1571 case SIOC_QETH_ARP_FLUSH_CACHE: 1572 if (!capable(CAP_NET_ADMIN)) { 1573 rc = -EPERM; 1574 break; 1575 } 1576 rc = qeth_l3_arp_flush_cache(card); 1577 break; 1578 default: 1579 rc = -EOPNOTSUPP; 1580 } 1581 return rc; 1582} 1583 1584static int qeth_l3_get_cast_type_rcu(struct sk_buff *skb, struct dst_entry *dst, 1585 int ipv) 1586{ 1587 struct neighbour *n = NULL; 1588 1589 if (dst) 1590 n = dst_neigh_lookup_skb(dst, skb); 1591 1592 if (n) { 1593 int cast_type = n->type; 1594 1595 neigh_release(n); 1596 if ((cast_type == RTN_BROADCAST) || 1597 (cast_type == RTN_MULTICAST) || 1598 (cast_type == RTN_ANYCAST)) 1599 return cast_type; 1600 return RTN_UNICAST; 1601 } 1602 1603 /* no neighbour (eg AF_PACKET), fall back to target's IP address ... */ 1604 switch (ipv) { 1605 case 4: 1606 if (ipv4_is_lbcast(ip_hdr(skb)->daddr)) 1607 return RTN_BROADCAST; 1608 return ipv4_is_multicast(ip_hdr(skb)->daddr) ? 1609 RTN_MULTICAST : RTN_UNICAST; 1610 case 6: 1611 return ipv6_addr_is_multicast(&ipv6_hdr(skb)->daddr) ? 1612 RTN_MULTICAST : RTN_UNICAST; 1613 default: 1614 /* ... and MAC address */ 1615 return qeth_get_ether_cast_type(skb); 1616 } 1617} 1618 1619static int qeth_l3_get_cast_type(struct sk_buff *skb) 1620{ 1621 int ipv = qeth_get_ip_version(skb); 1622 struct dst_entry *dst; 1623 int cast_type; 1624 1625 rcu_read_lock(); 1626 dst = qeth_dst_check_rcu(skb, ipv); 1627 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv); 1628 rcu_read_unlock(); 1629 1630 return cast_type; 1631} 1632 1633static u8 qeth_l3_cast_type_to_flag(int cast_type) 1634{ 1635 if (cast_type == RTN_MULTICAST) 1636 return QETH_CAST_MULTICAST; 1637 if (cast_type == RTN_ANYCAST) 1638 return QETH_CAST_ANYCAST; 1639 if (cast_type == RTN_BROADCAST) 1640 return QETH_CAST_BROADCAST; 1641 return QETH_CAST_UNICAST; 1642} 1643 1644static void qeth_l3_fill_header(struct qeth_qdio_out_q *queue, 1645 struct qeth_hdr *hdr, struct sk_buff *skb, 1646 int ipv, unsigned int data_len) 1647{ 1648 struct qeth_hdr_layer3 *l3_hdr = &hdr->hdr.l3; 1649 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 1650 struct qeth_card *card = queue->card; 1651 struct dst_entry *dst; 1652 int cast_type; 1653 1654 hdr->hdr.l3.length = data_len; 1655 1656 if (skb_is_gso(skb)) { 1657 hdr->hdr.l3.id = QETH_HEADER_TYPE_L3_TSO; 1658 } else { 1659 hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; 1660 1661 if (skb->protocol == htons(ETH_P_AF_IUCV)) { 1662 l3_hdr->flags = QETH_HDR_IPV6 | QETH_CAST_UNICAST; 1663 l3_hdr->next_hop.addr.s6_addr16[0] = htons(0xfe80); 1664 memcpy(&l3_hdr->next_hop.addr.s6_addr32[2], 1665 iucv_trans_hdr(skb)->destUserID, 8); 1666 return; 1667 } 1668 1669 if (skb->ip_summed == CHECKSUM_PARTIAL) { 1670 qeth_tx_csum(skb, &hdr->hdr.l3.ext_flags, ipv); 1671 /* some HW requires combined L3+L4 csum offload: */ 1672 if (ipv == 4) 1673 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_CSUM_HDR_REQ; 1674 } 1675 } 1676 1677 if (ipv == 4 || IS_IQD(card)) { 1678 /* NETIF_F_HW_VLAN_CTAG_TX */ 1679 if (skb_vlan_tag_present(skb)) { 1680 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_VLAN_FRAME; 1681 hdr->hdr.l3.vlan_id = skb_vlan_tag_get(skb); 1682 } 1683 } else if (veth->h_vlan_proto == htons(ETH_P_8021Q)) { 1684 hdr->hdr.l3.ext_flags |= QETH_HDR_EXT_INCLUDE_VLAN_TAG; 1685 hdr->hdr.l3.vlan_id = ntohs(veth->h_vlan_TCI); 1686 } 1687 1688 rcu_read_lock(); 1689 dst = qeth_dst_check_rcu(skb, ipv); 1690 1691 if (IS_IQD(card) && skb_get_queue_mapping(skb) != QETH_IQD_MCAST_TXQ) 1692 cast_type = RTN_UNICAST; 1693 else 1694 cast_type = qeth_l3_get_cast_type_rcu(skb, dst, ipv); 1695 l3_hdr->flags |= qeth_l3_cast_type_to_flag(cast_type); 1696 1697 if (ipv == 4) { 1698 l3_hdr->next_hop.addr.s6_addr32[3] = 1699 qeth_next_hop_v4_rcu(skb, dst); 1700 } else if (ipv == 6) { 1701 l3_hdr->next_hop.addr = *qeth_next_hop_v6_rcu(skb, dst); 1702 1703 hdr->hdr.l3.flags |= QETH_HDR_IPV6; 1704 if (!IS_IQD(card)) 1705 hdr->hdr.l3.flags |= QETH_HDR_PASSTHRU; 1706 } else { 1707 /* OSA only: */ 1708 l3_hdr->flags |= QETH_HDR_PASSTHRU; 1709 } 1710 rcu_read_unlock(); 1711} 1712 1713static void qeth_l3_fixup_headers(struct sk_buff *skb) 1714{ 1715 struct iphdr *iph = ip_hdr(skb); 1716 1717 /* this is safe, IPv6 traffic takes a different path */ 1718 if (skb->ip_summed == CHECKSUM_PARTIAL) 1719 iph->check = 0; 1720 if (skb_is_gso(skb)) { 1721 iph->tot_len = 0; 1722 tcp_hdr(skb)->check = ~tcp_v4_check(0, iph->saddr, 1723 iph->daddr, 0); 1724 } 1725} 1726 1727static int qeth_l3_xmit(struct qeth_card *card, struct sk_buff *skb, 1728 struct qeth_qdio_out_q *queue, int ipv) 1729{ 1730 unsigned int hw_hdr_len; 1731 int rc; 1732 1733 /* re-use the L2 header area for the HW header: */ 1734 hw_hdr_len = skb_is_gso(skb) ? sizeof(struct qeth_hdr_tso) : 1735 sizeof(struct qeth_hdr); 1736 rc = skb_cow_head(skb, hw_hdr_len - ETH_HLEN); 1737 if (rc) 1738 return rc; 1739 skb_pull(skb, ETH_HLEN); 1740 1741 qeth_l3_fixup_headers(skb); 1742 return qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header); 1743} 1744 1745static netdev_tx_t qeth_l3_hard_start_xmit(struct sk_buff *skb, 1746 struct net_device *dev) 1747{ 1748 struct qeth_card *card = dev->ml_priv; 1749 u16 txq = skb_get_queue_mapping(skb); 1750 int ipv = qeth_get_ip_version(skb); 1751 struct qeth_qdio_out_q *queue; 1752 int rc; 1753 1754 if (!skb_is_gso(skb)) 1755 qdisc_skb_cb(skb)->pkt_len = skb->len; 1756 if (IS_IQD(card)) { 1757 queue = card->qdio.out_qs[qeth_iqd_translate_txq(dev, txq)]; 1758 1759 if (card->options.sniffer) 1760 goto tx_drop; 1761 if ((card->options.cq != QETH_CQ_ENABLED && !ipv) || 1762 (card->options.cq == QETH_CQ_ENABLED && 1763 skb->protocol != htons(ETH_P_AF_IUCV))) 1764 goto tx_drop; 1765 } else { 1766 queue = card->qdio.out_qs[txq]; 1767 } 1768 1769 if (!(dev->flags & IFF_BROADCAST) && 1770 qeth_l3_get_cast_type(skb) == RTN_BROADCAST) 1771 goto tx_drop; 1772 1773 if (ipv == 4 || IS_IQD(card)) 1774 rc = qeth_l3_xmit(card, skb, queue, ipv); 1775 else 1776 rc = qeth_xmit(card, skb, queue, ipv, qeth_l3_fill_header); 1777 1778 if (!rc) 1779 return NETDEV_TX_OK; 1780 1781tx_drop: 1782 QETH_TXQ_STAT_INC(queue, tx_dropped); 1783 kfree_skb(skb); 1784 return NETDEV_TX_OK; 1785} 1786 1787static void qeth_l3_set_rx_mode(struct net_device *dev) 1788{ 1789 struct qeth_card *card = dev->ml_priv; 1790 1791 schedule_work(&card->rx_mode_work); 1792} 1793 1794/* 1795 * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting 1796 * NOARP on the netdevice is no option because it also turns off neighbor 1797 * solicitation. For IPv4 we install a neighbor_setup function. We don't want 1798 * arp resolution but we want the hard header (packet socket will work 1799 * e.g. tcpdump) 1800 */ 1801static int qeth_l3_neigh_setup_noarp(struct neighbour *n) 1802{ 1803 n->nud_state = NUD_NOARP; 1804 memcpy(n->ha, "FAKELL", 6); 1805 n->output = n->ops->connected_output; 1806 return 0; 1807} 1808 1809static int 1810qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) 1811{ 1812 if (np->tbl->family == AF_INET) 1813 np->neigh_setup = qeth_l3_neigh_setup_noarp; 1814 1815 return 0; 1816} 1817 1818static netdev_features_t qeth_l3_osa_features_check(struct sk_buff *skb, 1819 struct net_device *dev, 1820 netdev_features_t features) 1821{ 1822 if (vlan_get_protocol(skb) != htons(ETH_P_IP)) 1823 features &= ~NETIF_F_HW_VLAN_CTAG_TX; 1824 return qeth_features_check(skb, dev, features); 1825} 1826 1827static u16 qeth_l3_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, 1828 struct net_device *sb_dev) 1829{ 1830 return qeth_iqd_select_queue(dev, skb, qeth_l3_get_cast_type(skb), 1831 sb_dev); 1832} 1833 1834static u16 qeth_l3_osa_select_queue(struct net_device *dev, struct sk_buff *skb, 1835 struct net_device *sb_dev) 1836{ 1837 struct qeth_card *card = dev->ml_priv; 1838 1839 if (qeth_uses_tx_prio_queueing(card)) 1840 return qeth_get_priority_queue(card, skb); 1841 1842 return netdev_pick_tx(dev, skb, sb_dev); 1843} 1844 1845static const struct net_device_ops qeth_l3_netdev_ops = { 1846 .ndo_open = qeth_open, 1847 .ndo_stop = qeth_stop, 1848 .ndo_get_stats64 = qeth_get_stats64, 1849 .ndo_start_xmit = qeth_l3_hard_start_xmit, 1850 .ndo_select_queue = qeth_l3_iqd_select_queue, 1851 .ndo_validate_addr = eth_validate_addr, 1852 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 1853 .ndo_do_ioctl = qeth_do_ioctl, 1854 .ndo_fix_features = qeth_fix_features, 1855 .ndo_set_features = qeth_set_features, 1856 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 1857 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 1858 .ndo_tx_timeout = qeth_tx_timeout, 1859}; 1860 1861static const struct net_device_ops qeth_l3_osa_netdev_ops = { 1862 .ndo_open = qeth_open, 1863 .ndo_stop = qeth_stop, 1864 .ndo_get_stats64 = qeth_get_stats64, 1865 .ndo_start_xmit = qeth_l3_hard_start_xmit, 1866 .ndo_features_check = qeth_l3_osa_features_check, 1867 .ndo_select_queue = qeth_l3_osa_select_queue, 1868 .ndo_validate_addr = eth_validate_addr, 1869 .ndo_set_rx_mode = qeth_l3_set_rx_mode, 1870 .ndo_do_ioctl = qeth_do_ioctl, 1871 .ndo_fix_features = qeth_fix_features, 1872 .ndo_set_features = qeth_set_features, 1873 .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, 1874 .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, 1875 .ndo_tx_timeout = qeth_tx_timeout, 1876 .ndo_neigh_setup = qeth_l3_neigh_setup, 1877}; 1878 1879static int qeth_l3_setup_netdev(struct qeth_card *card) 1880{ 1881 struct net_device *dev = card->dev; 1882 unsigned int headroom; 1883 int rc; 1884 1885 if (IS_OSD(card) || IS_OSX(card)) { 1886 card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; 1887 1888 /*IPv6 address autoconfiguration stuff*/ 1889 dev->dev_id = qeth_l3_get_unique_id(card, dev->dev_id); 1890 1891 if (!IS_VM_NIC(card)) { 1892 card->dev->features |= NETIF_F_SG; 1893 card->dev->hw_features |= NETIF_F_TSO | 1894 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 1895 card->dev->vlan_features |= NETIF_F_TSO | 1896 NETIF_F_RXCSUM | NETIF_F_IP_CSUM; 1897 } 1898 1899 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 1900 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 1901 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 1902 } 1903 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 1904 card->dev->hw_features |= NETIF_F_TSO6; 1905 card->dev->vlan_features |= NETIF_F_TSO6; 1906 } 1907 1908 /* allow for de-acceleration of NETIF_F_HW_VLAN_CTAG_TX: */ 1909 if (card->dev->hw_features & NETIF_F_TSO6) 1910 headroom = sizeof(struct qeth_hdr_tso) + VLAN_HLEN; 1911 else if (card->dev->hw_features & NETIF_F_TSO) 1912 headroom = sizeof(struct qeth_hdr_tso); 1913 else 1914 headroom = sizeof(struct qeth_hdr) + VLAN_HLEN; 1915 } else if (IS_IQD(card)) { 1916 card->dev->flags |= IFF_NOARP; 1917 card->dev->netdev_ops = &qeth_l3_netdev_ops; 1918 headroom = sizeof(struct qeth_hdr) - ETH_HLEN; 1919 1920 rc = qeth_l3_iqd_read_initial_mac(card); 1921 if (rc) 1922 return rc; 1923 } else 1924 return -ENODEV; 1925 1926 card->dev->needed_headroom = headroom; 1927 card->dev->features |= NETIF_F_HW_VLAN_CTAG_TX | 1928 NETIF_F_HW_VLAN_CTAG_RX | 1929 NETIF_F_HW_VLAN_CTAG_FILTER; 1930 1931 netif_keep_dst(card->dev); 1932 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) 1933 netif_set_gso_max_size(card->dev, 1934 PAGE_SIZE * (QETH_MAX_BUFFER_ELEMENTS(card) - 1)); 1935 1936 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 1937 return register_netdev(card->dev); 1938} 1939 1940static const struct device_type qeth_l3_devtype = { 1941 .name = "qeth_layer3", 1942 .groups = qeth_l3_attr_groups, 1943}; 1944 1945static int qeth_l3_probe_device(struct ccwgroup_device *gdev) 1946{ 1947 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1948 int rc; 1949 1950 hash_init(card->ip_htable); 1951 mutex_init(&card->ip_lock); 1952 card->cmd_wq = alloc_ordered_workqueue("%s_cmd", 0, 1953 dev_name(&gdev->dev)); 1954 if (!card->cmd_wq) 1955 return -ENOMEM; 1956 1957 if (gdev->dev.type == &qeth_generic_devtype) { 1958 rc = qeth_l3_create_device_attributes(&gdev->dev); 1959 if (rc) { 1960 destroy_workqueue(card->cmd_wq); 1961 return rc; 1962 } 1963 } 1964 1965 INIT_WORK(&card->rx_mode_work, qeth_l3_rx_mode_work); 1966 return 0; 1967} 1968 1969static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) 1970{ 1971 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1972 1973 if (cgdev->dev.type == &qeth_generic_devtype) 1974 qeth_l3_remove_device_attributes(&cgdev->dev); 1975 1976 qeth_set_allowed_threads(card, 0, 1); 1977 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1978 1979 if (cgdev->state == CCWGROUP_ONLINE) 1980 qeth_set_offline(card, card->discipline, false); 1981 1982 cancel_work_sync(&card->close_dev_work); 1983 if (card->dev->reg_state == NETREG_REGISTERED) 1984 unregister_netdev(card->dev); 1985 1986 flush_workqueue(card->cmd_wq); 1987 destroy_workqueue(card->cmd_wq); 1988 qeth_l3_clear_ip_htable(card, 0); 1989 qeth_l3_clear_ipato_list(card); 1990} 1991 1992static int qeth_l3_set_online(struct qeth_card *card, bool carrier_ok) 1993{ 1994 struct net_device *dev = card->dev; 1995 int rc = 0; 1996 1997 /* softsetup */ 1998 QETH_CARD_TEXT(card, 2, "softsetp"); 1999 2000 rc = qeth_l3_setadapter_parms(card); 2001 if (rc) 2002 QETH_CARD_TEXT_(card, 2, "2err%04x", rc); 2003 if (!card->options.sniffer) { 2004 qeth_l3_start_ipassists(card); 2005 2006 rc = qeth_l3_setrouting_v4(card); 2007 if (rc) 2008 QETH_CARD_TEXT_(card, 2, "4err%04x", rc); 2009 rc = qeth_l3_setrouting_v6(card); 2010 if (rc) 2011 QETH_CARD_TEXT_(card, 2, "5err%04x", rc); 2012 } 2013 2014 card->state = CARD_STATE_SOFTSETUP; 2015 2016 qeth_set_allowed_threads(card, 0xffffffff, 0); 2017 qeth_l3_recover_ip(card); 2018 2019 if (dev->reg_state != NETREG_REGISTERED) { 2020 rc = qeth_l3_setup_netdev(card); 2021 if (rc) 2022 goto err_setup; 2023 2024 if (carrier_ok) 2025 netif_carrier_on(dev); 2026 } else { 2027 rtnl_lock(); 2028 rc = qeth_set_real_num_tx_queues(card, 2029 qeth_tx_actual_queues(card)); 2030 if (rc) { 2031 rtnl_unlock(); 2032 goto err_set_queues; 2033 } 2034 2035 if (carrier_ok) 2036 netif_carrier_on(dev); 2037 else 2038 netif_carrier_off(dev); 2039 2040 netif_device_attach(dev); 2041 qeth_enable_hw_features(dev); 2042 2043 if (netif_running(dev)) { 2044 local_bh_disable(); 2045 napi_schedule(&card->napi); 2046 /* kick-start the NAPI softirq: */ 2047 local_bh_enable(); 2048 } 2049 rtnl_unlock(); 2050 } 2051 return 0; 2052 2053err_set_queues: 2054err_setup: 2055 qeth_set_allowed_threads(card, 0, 1); 2056 card->state = CARD_STATE_DOWN; 2057 qeth_l3_clear_ip_htable(card, 1); 2058 return rc; 2059} 2060 2061static void qeth_l3_set_offline(struct qeth_card *card) 2062{ 2063 qeth_set_allowed_threads(card, 0, 1); 2064 qeth_l3_drain_rx_mode_cache(card); 2065 2066 if (card->options.sniffer && 2067 (card->info.promisc_mode == SET_PROMISC_MODE_ON)) 2068 qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_DISABLE); 2069 2070 if (card->state == CARD_STATE_SOFTSETUP) { 2071 card->state = CARD_STATE_DOWN; 2072 qeth_l3_clear_ip_htable(card, 1); 2073 } 2074} 2075 2076/* Returns zero if the command is successfully "consumed" */ 2077static int qeth_l3_control_event(struct qeth_card *card, 2078 struct qeth_ipa_cmd *cmd) 2079{ 2080 return 1; 2081} 2082 2083const struct qeth_discipline qeth_l3_discipline = { 2084 .devtype = &qeth_l3_devtype, 2085 .setup = qeth_l3_probe_device, 2086 .remove = qeth_l3_remove_device, 2087 .set_online = qeth_l3_set_online, 2088 .set_offline = qeth_l3_set_offline, 2089 .do_ioctl = qeth_l3_do_ioctl, 2090 .control_event_handler = qeth_l3_control_event, 2091}; 2092EXPORT_SYMBOL_GPL(qeth_l3_discipline); 2093 2094static int qeth_l3_handle_ip_event(struct qeth_card *card, 2095 struct qeth_ipaddr *addr, 2096 unsigned long event) 2097{ 2098 switch (event) { 2099 case NETDEV_UP: 2100 qeth_l3_modify_ip(card, addr, true); 2101 return NOTIFY_OK; 2102 case NETDEV_DOWN: 2103 qeth_l3_modify_ip(card, addr, false); 2104 return NOTIFY_OK; 2105 default: 2106 return NOTIFY_DONE; 2107 } 2108} 2109 2110struct qeth_l3_ip_event_work { 2111 struct work_struct work; 2112 struct qeth_card *card; 2113 struct qeth_ipaddr addr; 2114}; 2115 2116#define to_ip_work(w) container_of((w), struct qeth_l3_ip_event_work, work) 2117 2118static void qeth_l3_add_ip_worker(struct work_struct *work) 2119{ 2120 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); 2121 2122 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, true); 2123 kfree(work); 2124} 2125 2126static void qeth_l3_delete_ip_worker(struct work_struct *work) 2127{ 2128 struct qeth_l3_ip_event_work *ip_work = to_ip_work(work); 2129 2130 qeth_l3_modify_ip(ip_work->card, &ip_work->addr, false); 2131 kfree(work); 2132} 2133 2134static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) 2135{ 2136 if (is_vlan_dev(dev)) 2137 dev = vlan_dev_real_dev(dev); 2138 if (dev->netdev_ops == &qeth_l3_osa_netdev_ops || 2139 dev->netdev_ops == &qeth_l3_netdev_ops) 2140 return (struct qeth_card *) dev->ml_priv; 2141 return NULL; 2142} 2143 2144static int qeth_l3_ip_event(struct notifier_block *this, 2145 unsigned long event, void *ptr) 2146{ 2147 struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; 2148 struct net_device *dev = ifa->ifa_dev->dev; 2149 struct qeth_ipaddr addr; 2150 struct qeth_card *card; 2151 2152 card = qeth_l3_get_card_from_dev(dev); 2153 if (!card) 2154 return NOTIFY_DONE; 2155 QETH_CARD_TEXT(card, 3, "ipevent"); 2156 2157 qeth_l3_init_ipaddr(&addr, QETH_IP_TYPE_NORMAL, QETH_PROT_IPV4); 2158 addr.u.a4.addr = ifa->ifa_address; 2159 addr.u.a4.mask = ifa->ifa_mask; 2160 2161 return qeth_l3_handle_ip_event(card, &addr, event); 2162} 2163 2164static struct notifier_block qeth_l3_ip_notifier = { 2165 qeth_l3_ip_event, 2166 NULL, 2167}; 2168 2169static int qeth_l3_ip6_event(struct notifier_block *this, 2170 unsigned long event, void *ptr) 2171{ 2172 struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; 2173 struct net_device *dev = ifa->idev->dev; 2174 struct qeth_l3_ip_event_work *ip_work; 2175 struct qeth_card *card; 2176 2177 if (event != NETDEV_UP && event != NETDEV_DOWN) 2178 return NOTIFY_DONE; 2179 2180 card = qeth_l3_get_card_from_dev(dev); 2181 if (!card) 2182 return NOTIFY_DONE; 2183 QETH_CARD_TEXT(card, 3, "ip6event"); 2184 if (!qeth_is_supported(card, IPA_IPV6)) 2185 return NOTIFY_DONE; 2186 2187 ip_work = kmalloc(sizeof(*ip_work), GFP_ATOMIC); 2188 if (!ip_work) 2189 return NOTIFY_DONE; 2190 2191 if (event == NETDEV_UP) 2192 INIT_WORK(&ip_work->work, qeth_l3_add_ip_worker); 2193 else 2194 INIT_WORK(&ip_work->work, qeth_l3_delete_ip_worker); 2195 2196 ip_work->card = card; 2197 qeth_l3_init_ipaddr(&ip_work->addr, QETH_IP_TYPE_NORMAL, 2198 QETH_PROT_IPV6); 2199 ip_work->addr.u.a6.addr = ifa->addr; 2200 ip_work->addr.u.a6.pfxlen = ifa->prefix_len; 2201 2202 queue_work(card->cmd_wq, &ip_work->work); 2203 return NOTIFY_OK; 2204} 2205 2206static struct notifier_block qeth_l3_ip6_notifier = { 2207 qeth_l3_ip6_event, 2208 NULL, 2209}; 2210 2211static int qeth_l3_register_notifiers(void) 2212{ 2213 int rc; 2214 2215 QETH_DBF_TEXT(SETUP, 5, "regnotif"); 2216 rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); 2217 if (rc) 2218 return rc; 2219 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); 2220 if (rc) { 2221 unregister_inetaddr_notifier(&qeth_l3_ip_notifier); 2222 return rc; 2223 } 2224 return 0; 2225} 2226 2227static void qeth_l3_unregister_notifiers(void) 2228{ 2229 QETH_DBF_TEXT(SETUP, 5, "unregnot"); 2230 WARN_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); 2231 WARN_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); 2232} 2233 2234static int __init qeth_l3_init(void) 2235{ 2236 pr_info("register layer 3 discipline\n"); 2237 return qeth_l3_register_notifiers(); 2238} 2239 2240static void __exit qeth_l3_exit(void) 2241{ 2242 qeth_l3_unregister_notifiers(); 2243 pr_info("unregister layer 3 discipline\n"); 2244} 2245 2246module_init(qeth_l3_init); 2247module_exit(qeth_l3_exit); 2248MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2249MODULE_DESCRIPTION("qeth layer 3 discipline"); 2250MODULE_LICENSE("GPL"); 2251