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/string.h> 16 #include <linux/errno.h> 17 #include <linux/kernel.h> 18 #include <linux/slab.h> 19 #include <linux/etherdevice.h> 20 #include <linux/list.h> 21 #include <linux/hash.h> 22 #include <linux/hashtable.h> 23 #include <asm/setup.h> 24 #include "qeth_core.h" 25 #include "qeth_l2.h" 26 27 static void qeth_bridgeport_query_support(struct qeth_card *card); 28 static void qeth_bridge_state_change(struct qeth_card *card, 29 struct qeth_ipa_cmd *cmd); 30 static void qeth_bridge_host_event(struct qeth_card *card, 31 struct qeth_ipa_cmd *cmd); 32 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); 33 static void qeth_l2_vnicc_init(struct qeth_card *card); 34 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 35 u32 *timeout); 36 37 static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode) 38 { 39 int rc; 40 41 if (retcode) 42 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 43 switch (retcode) { 44 case IPA_RC_SUCCESS: 45 rc = 0; 46 break; 47 case IPA_RC_L2_UNSUPPORTED_CMD: 48 rc = -EOPNOTSUPP; 49 break; 50 case IPA_RC_L2_ADDR_TABLE_FULL: 51 rc = -ENOSPC; 52 break; 53 case IPA_RC_L2_DUP_MAC: 54 case IPA_RC_L2_DUP_LAYER3_MAC: 55 rc = -EEXIST; 56 break; 57 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 58 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 59 rc = -EPERM; 60 break; 61 case IPA_RC_L2_MAC_NOT_FOUND: 62 rc = -ENOENT; 63 break; 64 default: 65 rc = -EIO; 66 break; 67 } 68 return rc; 69 } 70 71 static int qeth_l2_send_setdelmac_cb(struct qeth_card *card, 72 struct qeth_reply *reply, 73 unsigned long data) 74 { 75 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 76 77 return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code); 78 } 79 80 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 81 enum qeth_ipa_cmds ipacmd) 82 { 83 struct qeth_ipa_cmd *cmd; 84 struct qeth_cmd_buffer *iob; 85 86 QETH_CARD_TEXT(card, 2, "L2sdmac"); 87 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4, 88 IPA_DATA_SIZEOF(setdelmac)); 89 if (!iob) 90 return -ENOMEM; 91 cmd = __ipa_cmd(iob); 92 cmd->data.setdelmac.mac_length = ETH_ALEN; 93 ether_addr_copy(cmd->data.setdelmac.mac, mac); 94 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelmac_cb, NULL); 95 } 96 97 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 98 { 99 int rc; 100 101 QETH_CARD_TEXT(card, 2, "L2Setmac"); 102 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 103 if (rc == 0) { 104 dev_info(&card->gdev->dev, 105 "MAC address %pM successfully registered\n", mac); 106 } else { 107 switch (rc) { 108 case -EEXIST: 109 dev_warn(&card->gdev->dev, 110 "MAC address %pM already exists\n", mac); 111 break; 112 case -EPERM: 113 dev_warn(&card->gdev->dev, 114 "MAC address %pM is not authorized\n", mac); 115 break; 116 } 117 } 118 return rc; 119 } 120 121 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) 122 { 123 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? 124 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC; 125 int rc; 126 127 QETH_CARD_TEXT(card, 2, "L2Wmac"); 128 rc = qeth_l2_send_setdelmac(card, mac, cmd); 129 if (rc == -EEXIST) 130 QETH_DBF_MESSAGE(2, "MAC already registered on device %x\n", 131 CARD_DEVID(card)); 132 else if (rc) 133 QETH_DBF_MESSAGE(2, "Failed to register MAC on device %x: %d\n", 134 CARD_DEVID(card), rc); 135 return rc; 136 } 137 138 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) 139 { 140 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? 141 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; 142 int rc; 143 144 QETH_CARD_TEXT(card, 2, "L2Rmac"); 145 rc = qeth_l2_send_setdelmac(card, mac, cmd); 146 if (rc) 147 QETH_DBF_MESSAGE(2, "Failed to delete MAC on device %u: %d\n", 148 CARD_DEVID(card), rc); 149 return rc; 150 } 151 152 static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card) 153 { 154 struct qeth_mac *mac; 155 struct hlist_node *tmp; 156 int i; 157 158 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 159 hash_del(&mac->hnode); 160 kfree(mac); 161 } 162 } 163 164 static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue, 165 struct qeth_hdr *hdr, struct sk_buff *skb, 166 int ipv, unsigned int data_len) 167 { 168 int cast_type = qeth_get_ether_cast_type(skb); 169 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 170 171 hdr->hdr.l2.pkt_length = data_len; 172 173 if (skb_is_gso(skb)) { 174 hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO; 175 } else { 176 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 177 if (skb->ip_summed == CHECKSUM_PARTIAL) 178 qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv); 179 } 180 181 /* set byte byte 3 to casting flags */ 182 if (cast_type == RTN_MULTICAST) 183 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 184 else if (cast_type == RTN_BROADCAST) 185 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 186 else 187 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 188 189 /* VSWITCH relies on the VLAN 190 * information to be present in 191 * the QDIO header */ 192 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 193 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 194 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 195 } 196 } 197 198 static int qeth_l2_setdelvlan_makerc(struct qeth_card *card, u16 retcode) 199 { 200 if (retcode) 201 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 202 203 switch (retcode) { 204 case IPA_RC_SUCCESS: 205 return 0; 206 case IPA_RC_L2_INVALID_VLAN_ID: 207 return -EINVAL; 208 case IPA_RC_L2_DUP_VLAN_ID: 209 return -EEXIST; 210 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 211 return -ENOENT; 212 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 213 return -EPERM; 214 default: 215 return -EIO; 216 } 217 } 218 219 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 220 struct qeth_reply *reply, 221 unsigned long data) 222 { 223 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 224 225 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 226 if (cmd->hdr.return_code) { 227 QETH_DBF_MESSAGE(2, "Error in processing VLAN %u on device %x: %#x.\n", 228 cmd->data.setdelvlan.vlan_id, 229 CARD_DEVID(card), cmd->hdr.return_code); 230 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 231 } 232 return qeth_l2_setdelvlan_makerc(card, cmd->hdr.return_code); 233 } 234 235 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 236 enum qeth_ipa_cmds ipacmd) 237 { 238 struct qeth_ipa_cmd *cmd; 239 struct qeth_cmd_buffer *iob; 240 241 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 242 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4, 243 IPA_DATA_SIZEOF(setdelvlan)); 244 if (!iob) 245 return -ENOMEM; 246 cmd = __ipa_cmd(iob); 247 cmd->data.setdelvlan.vlan_id = i; 248 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelvlan_cb, NULL); 249 } 250 251 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 252 __be16 proto, u16 vid) 253 { 254 struct qeth_card *card = dev->ml_priv; 255 256 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 257 if (!vid) 258 return 0; 259 260 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 261 } 262 263 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 264 __be16 proto, u16 vid) 265 { 266 struct qeth_card *card = dev->ml_priv; 267 268 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 269 if (!vid) 270 return 0; 271 272 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 273 } 274 275 static void qeth_l2_stop_card(struct qeth_card *card) 276 { 277 QETH_CARD_TEXT(card, 2, "stopcard"); 278 279 qeth_set_allowed_threads(card, 0, 1); 280 281 cancel_work_sync(&card->rx_mode_work); 282 qeth_l2_drain_rx_mode_cache(card); 283 284 if (card->state == CARD_STATE_SOFTSETUP) { 285 qeth_clear_ipacmd_list(card); 286 qeth_drain_output_queues(card); 287 cancel_delayed_work_sync(&card->buffer_reclaim_work); 288 card->state = CARD_STATE_DOWN; 289 } 290 291 qeth_qdio_clear_card(card, 0); 292 qeth_clear_working_pool_list(card); 293 flush_workqueue(card->event_wq); 294 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 295 card->info.promisc_mode = 0; 296 } 297 298 static int qeth_l2_request_initial_mac(struct qeth_card *card) 299 { 300 int rc = 0; 301 302 QETH_CARD_TEXT(card, 2, "l2reqmac"); 303 304 if (MACHINE_IS_VM) { 305 rc = qeth_vm_request_mac(card); 306 if (!rc) 307 goto out; 308 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n", 309 CARD_DEVID(card), rc); 310 QETH_CARD_TEXT_(card, 2, "err%04x", rc); 311 /* fall back to alternative mechanism: */ 312 } 313 314 if (!IS_OSN(card)) { 315 rc = qeth_setadpparms_change_macaddr(card); 316 if (!rc) 317 goto out; 318 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n", 319 CARD_DEVID(card), rc); 320 QETH_CARD_TEXT_(card, 2, "1err%04x", rc); 321 /* fall back once more: */ 322 } 323 324 /* some devices don't support a custom MAC address: */ 325 if (IS_OSM(card) || IS_OSX(card)) 326 return (rc) ? rc : -EADDRNOTAVAIL; 327 eth_hw_addr_random(card->dev); 328 329 out: 330 QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len); 331 return 0; 332 } 333 334 static void qeth_l2_register_dev_addr(struct qeth_card *card) 335 { 336 if (!is_valid_ether_addr(card->dev->dev_addr)) 337 qeth_l2_request_initial_mac(card); 338 339 if (!IS_OSN(card) && !qeth_l2_send_setmac(card, card->dev->dev_addr)) 340 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 341 } 342 343 static int qeth_l2_validate_addr(struct net_device *dev) 344 { 345 struct qeth_card *card = dev->ml_priv; 346 347 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) 348 return eth_validate_addr(dev); 349 350 QETH_CARD_TEXT(card, 4, "nomacadr"); 351 return -EPERM; 352 } 353 354 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 355 { 356 struct sockaddr *addr = p; 357 struct qeth_card *card = dev->ml_priv; 358 u8 old_addr[ETH_ALEN]; 359 int rc = 0; 360 361 QETH_CARD_TEXT(card, 3, "setmac"); 362 363 if (IS_OSM(card) || IS_OSX(card)) { 364 QETH_CARD_TEXT(card, 3, "setmcTYP"); 365 return -EOPNOTSUPP; 366 } 367 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 368 if (!is_valid_ether_addr(addr->sa_data)) 369 return -EADDRNOTAVAIL; 370 371 /* don't register the same address twice */ 372 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) && 373 (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 374 return 0; 375 376 /* add the new address, switch over, drop the old */ 377 rc = qeth_l2_send_setmac(card, addr->sa_data); 378 if (rc) 379 return rc; 380 ether_addr_copy(old_addr, dev->dev_addr); 381 ether_addr_copy(dev->dev_addr, addr->sa_data); 382 383 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) 384 qeth_l2_remove_mac(card, old_addr); 385 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 386 return 0; 387 } 388 389 static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable) 390 { 391 int role; 392 int rc; 393 394 QETH_CARD_TEXT(card, 3, "pmisc2br"); 395 396 if (enable) { 397 if (card->options.sbp.reflect_promisc_primary) 398 role = QETH_SBP_ROLE_PRIMARY; 399 else 400 role = QETH_SBP_ROLE_SECONDARY; 401 } else 402 role = QETH_SBP_ROLE_NONE; 403 404 rc = qeth_bridgeport_setrole(card, role); 405 QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc); 406 if (!rc) { 407 card->options.sbp.role = role; 408 card->info.promisc_mode = enable; 409 } 410 } 411 412 static void qeth_l2_set_promisc_mode(struct qeth_card *card) 413 { 414 bool enable = card->dev->flags & IFF_PROMISC; 415 416 if (card->info.promisc_mode == enable) 417 return; 418 419 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) { 420 qeth_setadp_promisc_mode(card, enable); 421 } else { 422 mutex_lock(&card->sbp_lock); 423 if (card->options.sbp.reflect_promisc) 424 qeth_l2_promisc_to_bridge(card, enable); 425 mutex_unlock(&card->sbp_lock); 426 } 427 } 428 429 /* New MAC address is added to the hash table and marked to be written on card 430 * only if there is not in the hash table storage already 431 * 432 */ 433 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 434 { 435 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 436 struct qeth_mac *mac; 437 438 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 439 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 440 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 441 return; 442 } 443 } 444 445 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 446 if (!mac) 447 return; 448 449 ether_addr_copy(mac->mac_addr, ha->addr); 450 mac->disp_flag = QETH_DISP_ADDR_ADD; 451 452 hash_add(card->mac_htable, &mac->hnode, mac_hash); 453 } 454 455 static void qeth_l2_rx_mode_work(struct work_struct *work) 456 { 457 struct qeth_card *card = container_of(work, struct qeth_card, 458 rx_mode_work); 459 struct net_device *dev = card->dev; 460 struct netdev_hw_addr *ha; 461 struct qeth_mac *mac; 462 struct hlist_node *tmp; 463 int i; 464 int rc; 465 466 QETH_CARD_TEXT(card, 3, "setmulti"); 467 468 netif_addr_lock_bh(dev); 469 netdev_for_each_mc_addr(ha, dev) 470 qeth_l2_add_mac(card, ha); 471 netdev_for_each_uc_addr(ha, dev) 472 qeth_l2_add_mac(card, ha); 473 netif_addr_unlock_bh(dev); 474 475 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 476 switch (mac->disp_flag) { 477 case QETH_DISP_ADDR_DELETE: 478 qeth_l2_remove_mac(card, mac->mac_addr); 479 hash_del(&mac->hnode); 480 kfree(mac); 481 break; 482 case QETH_DISP_ADDR_ADD: 483 rc = qeth_l2_write_mac(card, mac->mac_addr); 484 if (rc) { 485 hash_del(&mac->hnode); 486 kfree(mac); 487 break; 488 } 489 /* fall through */ 490 default: 491 /* for next call to set_rx_mode(): */ 492 mac->disp_flag = QETH_DISP_ADDR_DELETE; 493 } 494 } 495 496 qeth_l2_set_promisc_mode(card); 497 } 498 499 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 500 struct qeth_qdio_out_q *queue) 501 { 502 struct qeth_hdr *hdr = (struct qeth_hdr *)skb->data; 503 addr_t end = (addr_t)(skb->data + sizeof(*hdr)); 504 addr_t start = (addr_t)skb->data; 505 unsigned int elements = 0; 506 unsigned int hd_len = 0; 507 int rc; 508 509 if (skb->protocol == htons(ETH_P_IPV6)) 510 return -EPROTONOSUPPORT; 511 512 if (qeth_get_elements_for_range(start, end) > 1) { 513 /* Misaligned HW header, move it to its own buffer element. */ 514 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 515 if (!hdr) 516 return -ENOMEM; 517 hd_len = sizeof(*hdr); 518 skb_copy_from_linear_data(skb, (char *)hdr, hd_len); 519 elements++; 520 } 521 522 elements += qeth_count_elements(skb, hd_len); 523 if (elements > queue->max_elements) { 524 rc = -E2BIG; 525 goto out; 526 } 527 528 rc = qeth_do_send_packet(card, queue, skb, hdr, hd_len, hd_len, 529 elements); 530 out: 531 if (rc && hd_len) 532 kmem_cache_free(qeth_core_header_cache, hdr); 533 return rc; 534 } 535 536 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 537 struct net_device *dev) 538 { 539 struct qeth_card *card = dev->ml_priv; 540 u16 txq = skb_get_queue_mapping(skb); 541 struct qeth_qdio_out_q *queue; 542 int rc; 543 544 if (!skb_is_gso(skb)) 545 qdisc_skb_cb(skb)->pkt_len = skb->len; 546 if (IS_IQD(card)) 547 txq = qeth_iqd_translate_txq(dev, txq); 548 queue = card->qdio.out_qs[txq]; 549 550 if (IS_OSN(card)) 551 rc = qeth_l2_xmit_osn(card, skb, queue); 552 else 553 rc = qeth_xmit(card, skb, queue, qeth_get_ip_version(skb), 554 qeth_l2_fill_header); 555 556 if (!rc) 557 return NETDEV_TX_OK; 558 559 QETH_TXQ_STAT_INC(queue, tx_dropped); 560 kfree_skb(skb); 561 return NETDEV_TX_OK; 562 } 563 564 static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb, 565 struct net_device *sb_dev) 566 { 567 struct qeth_card *card = dev->ml_priv; 568 569 if (IS_IQD(card)) 570 return qeth_iqd_select_queue(dev, skb, 571 qeth_get_ether_cast_type(skb), 572 sb_dev); 573 return qeth_get_priority_queue(card, skb); 574 } 575 576 static const struct device_type qeth_l2_devtype = { 577 .name = "qeth_layer2", 578 .groups = qeth_l2_attr_groups, 579 }; 580 581 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 582 { 583 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 584 int rc; 585 586 qeth_l2_vnicc_set_defaults(card); 587 mutex_init(&card->sbp_lock); 588 589 if (gdev->dev.type == &qeth_generic_devtype) { 590 rc = qeth_l2_create_device_attributes(&gdev->dev); 591 if (rc) 592 return rc; 593 } 594 595 hash_init(card->mac_htable); 596 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work); 597 return 0; 598 } 599 600 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 601 { 602 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 603 604 if (cgdev->dev.type == &qeth_generic_devtype) 605 qeth_l2_remove_device_attributes(&cgdev->dev); 606 qeth_set_allowed_threads(card, 0, 1); 607 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 608 609 if (cgdev->state == CCWGROUP_ONLINE) 610 qeth_set_offline(card, false); 611 612 cancel_work_sync(&card->close_dev_work); 613 if (qeth_netdev_is_registered(card->dev)) 614 unregister_netdev(card->dev); 615 } 616 617 static void qeth_l2_set_rx_mode(struct net_device *dev) 618 { 619 struct qeth_card *card = dev->ml_priv; 620 621 schedule_work(&card->rx_mode_work); 622 } 623 624 static const struct net_device_ops qeth_l2_netdev_ops = { 625 .ndo_open = qeth_open, 626 .ndo_stop = qeth_stop, 627 .ndo_get_stats64 = qeth_get_stats64, 628 .ndo_start_xmit = qeth_l2_hard_start_xmit, 629 .ndo_features_check = qeth_features_check, 630 .ndo_select_queue = qeth_l2_select_queue, 631 .ndo_validate_addr = qeth_l2_validate_addr, 632 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 633 .ndo_do_ioctl = qeth_do_ioctl, 634 .ndo_set_mac_address = qeth_l2_set_mac_address, 635 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 636 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 637 .ndo_tx_timeout = qeth_tx_timeout, 638 .ndo_fix_features = qeth_fix_features, 639 .ndo_set_features = qeth_set_features 640 }; 641 642 static const struct net_device_ops qeth_osn_netdev_ops = { 643 .ndo_open = qeth_open, 644 .ndo_stop = qeth_stop, 645 .ndo_get_stats64 = qeth_get_stats64, 646 .ndo_start_xmit = qeth_l2_hard_start_xmit, 647 .ndo_validate_addr = eth_validate_addr, 648 .ndo_tx_timeout = qeth_tx_timeout, 649 }; 650 651 static int qeth_l2_setup_netdev(struct qeth_card *card, bool carrier_ok) 652 { 653 int rc; 654 655 if (IS_OSN(card)) { 656 card->dev->netdev_ops = &qeth_osn_netdev_ops; 657 card->dev->flags |= IFF_NOARP; 658 goto add_napi; 659 } 660 661 card->dev->needed_headroom = sizeof(struct qeth_hdr); 662 card->dev->netdev_ops = &qeth_l2_netdev_ops; 663 card->dev->priv_flags |= IFF_UNICAST_FLT; 664 665 if (IS_OSM(card)) { 666 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 667 } else { 668 if (!IS_VM_NIC(card)) 669 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 670 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 671 } 672 673 if (IS_OSD(card) && !IS_VM_NIC(card)) { 674 card->dev->features |= NETIF_F_SG; 675 /* OSA 3S and earlier has no RX/TX support */ 676 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 677 card->dev->hw_features |= NETIF_F_IP_CSUM; 678 card->dev->vlan_features |= NETIF_F_IP_CSUM; 679 } 680 } 681 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 682 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 683 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 684 } 685 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) || 686 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) { 687 card->dev->hw_features |= NETIF_F_RXCSUM; 688 card->dev->vlan_features |= NETIF_F_RXCSUM; 689 } 690 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 691 card->dev->hw_features |= NETIF_F_TSO; 692 card->dev->vlan_features |= NETIF_F_TSO; 693 } 694 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 695 card->dev->hw_features |= NETIF_F_TSO6; 696 card->dev->vlan_features |= NETIF_F_TSO6; 697 } 698 699 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) { 700 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso); 701 netif_set_gso_max_size(card->dev, 702 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)); 703 } 704 705 add_napi: 706 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 707 rc = register_netdev(card->dev); 708 if (!rc && carrier_ok) 709 netif_carrier_on(card->dev); 710 711 if (rc) 712 card->dev->netdev_ops = NULL; 713 return rc; 714 } 715 716 static void qeth_l2_trace_features(struct qeth_card *card) 717 { 718 /* Set BridgePort features */ 719 QETH_CARD_TEXT(card, 2, "featuSBP"); 720 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 721 sizeof(card->options.sbp.supported_funcs)); 722 /* VNIC Characteristics features */ 723 QETH_CARD_TEXT(card, 2, "feaVNICC"); 724 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 725 sizeof(card->options.vnicc.sup_chars)); 726 } 727 728 static void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card) 729 { 730 if (!card->options.sbp.reflect_promisc && 731 card->options.sbp.role != QETH_SBP_ROLE_NONE) { 732 /* Conditional to avoid spurious error messages */ 733 qeth_bridgeport_setrole(card, card->options.sbp.role); 734 /* Let the callback function refresh the stored role value. */ 735 qeth_bridgeport_query_ports(card, &card->options.sbp.role, 736 NULL); 737 } 738 if (card->options.sbp.hostnotification) { 739 if (qeth_bridgeport_an_set(card, 1)) 740 card->options.sbp.hostnotification = 0; 741 } else { 742 qeth_bridgeport_an_set(card, 0); 743 } 744 } 745 746 static int qeth_l2_set_online(struct qeth_card *card) 747 { 748 struct ccwgroup_device *gdev = card->gdev; 749 struct net_device *dev = card->dev; 750 int rc = 0; 751 bool carrier_ok; 752 753 rc = qeth_core_hardsetup_card(card, &carrier_ok); 754 if (rc) { 755 QETH_CARD_TEXT_(card, 2, "2err%04x", rc); 756 rc = -ENODEV; 757 goto out_remove; 758 } 759 760 mutex_lock(&card->sbp_lock); 761 qeth_bridgeport_query_support(card); 762 if (card->options.sbp.supported_funcs) { 763 qeth_l2_setup_bridgeport_attrs(card); 764 dev_info(&card->gdev->dev, 765 "The device represents a Bridge Capable Port\n"); 766 } 767 mutex_unlock(&card->sbp_lock); 768 769 qeth_l2_register_dev_addr(card); 770 771 /* for the rx_bcast characteristic, init VNICC after setmac */ 772 qeth_l2_vnicc_init(card); 773 774 qeth_trace_features(card); 775 qeth_l2_trace_features(card); 776 777 qeth_print_status_message(card); 778 779 /* softsetup */ 780 QETH_CARD_TEXT(card, 2, "softsetp"); 781 782 card->state = CARD_STATE_SOFTSETUP; 783 784 qeth_set_allowed_threads(card, 0xffffffff, 0); 785 786 if (!qeth_netdev_is_registered(dev)) { 787 rc = qeth_l2_setup_netdev(card, carrier_ok); 788 if (rc) 789 goto out_remove; 790 } else { 791 rtnl_lock(); 792 if (carrier_ok) 793 netif_carrier_on(dev); 794 else 795 netif_carrier_off(dev); 796 797 netif_device_attach(dev); 798 qeth_enable_hw_features(dev); 799 800 if (card->info.open_when_online) { 801 card->info.open_when_online = 0; 802 dev_open(dev, NULL); 803 } 804 rtnl_unlock(); 805 } 806 /* let user_space know that device is online */ 807 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 808 return 0; 809 810 out_remove: 811 qeth_l2_stop_card(card); 812 qeth_stop_channel(&card->data); 813 qeth_stop_channel(&card->write); 814 qeth_stop_channel(&card->read); 815 qdio_free(CARD_DDEV(card)); 816 return rc; 817 } 818 819 static void qeth_l2_set_offline(struct qeth_card *card) 820 { 821 qeth_l2_stop_card(card); 822 } 823 824 static int __init qeth_l2_init(void) 825 { 826 pr_info("register layer 2 discipline\n"); 827 return 0; 828 } 829 830 static void __exit qeth_l2_exit(void) 831 { 832 pr_info("unregister layer 2 discipline\n"); 833 } 834 835 /* Returns zero if the command is successfully "consumed" */ 836 static int qeth_l2_control_event(struct qeth_card *card, 837 struct qeth_ipa_cmd *cmd) 838 { 839 switch (cmd->hdr.command) { 840 case IPA_CMD_SETBRIDGEPORT_OSA: 841 case IPA_CMD_SETBRIDGEPORT_IQD: 842 if (cmd->data.sbp.hdr.command_code == 843 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 844 qeth_bridge_state_change(card, cmd); 845 return 0; 846 } else 847 return 1; 848 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 849 qeth_bridge_host_event(card, cmd); 850 return 0; 851 default: 852 return 1; 853 } 854 } 855 856 struct qeth_discipline qeth_l2_discipline = { 857 .devtype = &qeth_l2_devtype, 858 .setup = qeth_l2_probe_device, 859 .remove = qeth_l2_remove_device, 860 .set_online = qeth_l2_set_online, 861 .set_offline = qeth_l2_set_offline, 862 .do_ioctl = NULL, 863 .control_event_handler = qeth_l2_control_event, 864 }; 865 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 866 867 static void qeth_osn_assist_cb(struct qeth_card *card, 868 struct qeth_cmd_buffer *iob, 869 unsigned int data_length) 870 { 871 qeth_notify_cmd(iob, 0); 872 qeth_put_cmd(iob); 873 } 874 875 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 876 { 877 struct qeth_cmd_buffer *iob; 878 struct qeth_card *card; 879 880 if (data_len < 0) 881 return -EINVAL; 882 if (!dev) 883 return -ENODEV; 884 card = dev->ml_priv; 885 if (!card) 886 return -ENODEV; 887 QETH_CARD_TEXT(card, 2, "osnsdmc"); 888 if (!qeth_card_hw_is_reachable(card)) 889 return -ENODEV; 890 891 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_len, 1, 892 QETH_IPA_TIMEOUT); 893 if (!iob) 894 return -ENOMEM; 895 896 qeth_prepare_ipa_cmd(card, iob, (u16) data_len, NULL); 897 898 memcpy(__ipa_cmd(iob), data, data_len); 899 iob->callback = qeth_osn_assist_cb; 900 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 901 } 902 EXPORT_SYMBOL(qeth_osn_assist); 903 904 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 905 int (*assist_cb)(struct net_device *, void *), 906 int (*data_cb)(struct sk_buff *)) 907 { 908 struct qeth_card *card; 909 char bus_id[16]; 910 u16 devno; 911 912 memcpy(&devno, read_dev_no, 2); 913 sprintf(bus_id, "0.0.%04x", devno); 914 card = qeth_get_card_by_busid(bus_id); 915 if (!card || !IS_OSN(card)) 916 return -ENODEV; 917 *dev = card->dev; 918 919 QETH_CARD_TEXT(card, 2, "osnreg"); 920 if ((assist_cb == NULL) || (data_cb == NULL)) 921 return -EINVAL; 922 card->osn_info.assist_cb = assist_cb; 923 card->osn_info.data_cb = data_cb; 924 return 0; 925 } 926 EXPORT_SYMBOL(qeth_osn_register); 927 928 void qeth_osn_deregister(struct net_device *dev) 929 { 930 struct qeth_card *card; 931 932 if (!dev) 933 return; 934 card = dev->ml_priv; 935 if (!card) 936 return; 937 QETH_CARD_TEXT(card, 2, "osndereg"); 938 card->osn_info.assist_cb = NULL; 939 card->osn_info.data_cb = NULL; 940 return; 941 } 942 EXPORT_SYMBOL(qeth_osn_deregister); 943 944 /* SETBRIDGEPORT support, async notifications */ 945 946 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 947 948 /** 949 * qeth_bridge_emit_host_event() - bridgeport address change notification 950 * @card: qeth_card structure pointer, for udev events. 951 * @evtype: "normal" register/unregister, or abort, or reset. For abort 952 * and reset token and addr_lnid are unused and may be NULL. 953 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 954 * object, 0 - addition of an object. 955 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 956 * @token: "network token" structure identifying physical address of the port. 957 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 958 * 959 * This function is called when registrations and deregistrations are 960 * reported by the hardware, and also when notifications are enabled - 961 * for all currently registered addresses. 962 */ 963 static void qeth_bridge_emit_host_event(struct qeth_card *card, 964 enum qeth_an_event_type evtype, 965 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 966 { 967 char str[7][32]; 968 char *env[8]; 969 int i = 0; 970 971 switch (evtype) { 972 case anev_reg_unreg: 973 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 974 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 975 ? "deregister" : "register"); 976 env[i] = str[i]; i++; 977 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 978 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 979 addr_lnid->lnid); 980 env[i] = str[i]; i++; 981 } 982 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 983 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 984 addr_lnid->mac); 985 env[i] = str[i]; i++; 986 } 987 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 988 token->cssid, token->ssid, token->devnum); 989 env[i] = str[i]; i++; 990 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 991 env[i] = str[i]; i++; 992 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 993 token->chpid); 994 env[i] = str[i]; i++; 995 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 996 env[i] = str[i]; i++; 997 break; 998 case anev_abort: 999 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1000 env[i] = str[i]; i++; 1001 break; 1002 case anev_reset: 1003 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1004 env[i] = str[i]; i++; 1005 break; 1006 } 1007 env[i] = NULL; 1008 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1009 } 1010 1011 struct qeth_bridge_state_data { 1012 struct work_struct worker; 1013 struct qeth_card *card; 1014 struct qeth_sbp_state_change qports; 1015 }; 1016 1017 static void qeth_bridge_state_change_worker(struct work_struct *work) 1018 { 1019 struct qeth_bridge_state_data *data = 1020 container_of(work, struct qeth_bridge_state_data, worker); 1021 /* We are only interested in the first entry - local port */ 1022 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1023 char env_locrem[32]; 1024 char env_role[32]; 1025 char env_state[32]; 1026 char *env[] = { 1027 env_locrem, 1028 env_role, 1029 env_state, 1030 NULL 1031 }; 1032 1033 /* Role should not change by itself, but if it did, */ 1034 /* information from the hardware is authoritative. */ 1035 mutex_lock(&data->card->sbp_lock); 1036 data->card->options.sbp.role = entry->role; 1037 mutex_unlock(&data->card->sbp_lock); 1038 1039 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1040 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1041 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1042 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1043 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1044 "<INVALID>"); 1045 snprintf(env_state, sizeof(env_state), "STATE=%s", 1046 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1047 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1048 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1049 "<INVALID>"); 1050 kobject_uevent_env(&data->card->gdev->dev.kobj, 1051 KOBJ_CHANGE, env); 1052 kfree(data); 1053 } 1054 1055 static void qeth_bridge_state_change(struct qeth_card *card, 1056 struct qeth_ipa_cmd *cmd) 1057 { 1058 struct qeth_sbp_state_change *qports = 1059 &cmd->data.sbp.data.state_change; 1060 struct qeth_bridge_state_data *data; 1061 int extrasize; 1062 1063 QETH_CARD_TEXT(card, 2, "brstchng"); 1064 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1065 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1066 return; 1067 } 1068 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1069 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1070 GFP_ATOMIC); 1071 if (!data) { 1072 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1073 return; 1074 } 1075 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1076 data->card = card; 1077 memcpy(&data->qports, qports, 1078 sizeof(struct qeth_sbp_state_change) + extrasize); 1079 queue_work(card->event_wq, &data->worker); 1080 } 1081 1082 struct qeth_bridge_host_data { 1083 struct work_struct worker; 1084 struct qeth_card *card; 1085 struct qeth_ipacmd_addr_change hostevs; 1086 }; 1087 1088 static void qeth_bridge_host_event_worker(struct work_struct *work) 1089 { 1090 struct qeth_bridge_host_data *data = 1091 container_of(work, struct qeth_bridge_host_data, worker); 1092 int i; 1093 1094 if (data->hostevs.lost_event_mask) { 1095 dev_info(&data->card->gdev->dev, 1096 "Address notification from the Bridge Port stopped %s (%s)\n", 1097 data->card->dev->name, 1098 (data->hostevs.lost_event_mask == 0x01) 1099 ? "Overflow" 1100 : (data->hostevs.lost_event_mask == 0x02) 1101 ? "Bridge port state change" 1102 : "Unknown reason"); 1103 mutex_lock(&data->card->sbp_lock); 1104 data->card->options.sbp.hostnotification = 0; 1105 mutex_unlock(&data->card->sbp_lock); 1106 qeth_bridge_emit_host_event(data->card, anev_abort, 1107 0, NULL, NULL); 1108 } else 1109 for (i = 0; i < data->hostevs.num_entries; i++) { 1110 struct qeth_ipacmd_addr_change_entry *entry = 1111 &data->hostevs.entry[i]; 1112 qeth_bridge_emit_host_event(data->card, 1113 anev_reg_unreg, 1114 entry->change_code, 1115 &entry->token, &entry->addr_lnid); 1116 } 1117 kfree(data); 1118 } 1119 1120 static void qeth_bridge_host_event(struct qeth_card *card, 1121 struct qeth_ipa_cmd *cmd) 1122 { 1123 struct qeth_ipacmd_addr_change *hostevs = 1124 &cmd->data.addrchange; 1125 struct qeth_bridge_host_data *data; 1126 int extrasize; 1127 1128 QETH_CARD_TEXT(card, 2, "brhostev"); 1129 if (cmd->hdr.return_code != 0x0000) { 1130 if (cmd->hdr.return_code == 0x0010) { 1131 if (hostevs->lost_event_mask == 0x00) 1132 hostevs->lost_event_mask = 0xff; 1133 } else { 1134 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1135 cmd->hdr.return_code); 1136 return; 1137 } 1138 } 1139 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1140 hostevs->num_entries; 1141 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1142 GFP_ATOMIC); 1143 if (!data) { 1144 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1145 return; 1146 } 1147 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1148 data->card = card; 1149 memcpy(&data->hostevs, hostevs, 1150 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1151 queue_work(card->event_wq, &data->worker); 1152 } 1153 1154 /* SETBRIDGEPORT support; sending commands */ 1155 1156 struct _qeth_sbp_cbctl { 1157 union { 1158 u32 supported; 1159 struct { 1160 enum qeth_sbp_roles *role; 1161 enum qeth_sbp_states *state; 1162 } qports; 1163 } data; 1164 }; 1165 1166 static int qeth_bridgeport_makerc(struct qeth_card *card, 1167 struct qeth_ipa_cmd *cmd) 1168 { 1169 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp; 1170 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code; 1171 u16 ipa_rc = cmd->hdr.return_code; 1172 u16 sbp_rc = sbp->hdr.return_code; 1173 int rc; 1174 1175 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS) 1176 return 0; 1177 1178 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) || 1179 (!IS_IQD(card) && ipa_rc == sbp_rc)) { 1180 switch (sbp_rc) { 1181 case IPA_RC_SUCCESS: 1182 rc = 0; 1183 break; 1184 case IPA_RC_L2_UNSUPPORTED_CMD: 1185 case IPA_RC_UNSUPPORTED_COMMAND: 1186 rc = -EOPNOTSUPP; 1187 break; 1188 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1189 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1190 rc = -ENODEV; /* maybe not the best code here? */ 1191 dev_err(&card->gdev->dev, 1192 "The device is not configured as a Bridge Port\n"); 1193 break; 1194 case IPA_RC_SBP_OSA_OS_MISMATCH: 1195 case IPA_RC_SBP_IQD_OS_MISMATCH: 1196 rc = -EPERM; 1197 dev_err(&card->gdev->dev, 1198 "A Bridge Port is already configured by a different operating system\n"); 1199 break; 1200 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1201 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1202 switch (setcmd) { 1203 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1204 rc = -EEXIST; 1205 dev_err(&card->gdev->dev, 1206 "The LAN already has a primary Bridge Port\n"); 1207 break; 1208 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1209 rc = -EBUSY; 1210 dev_err(&card->gdev->dev, 1211 "The device is already a primary Bridge Port\n"); 1212 break; 1213 default: 1214 rc = -EIO; 1215 } 1216 break; 1217 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1218 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1219 rc = -EBUSY; 1220 dev_err(&card->gdev->dev, 1221 "The device is already a secondary Bridge Port\n"); 1222 break; 1223 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1224 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1225 rc = -EEXIST; 1226 dev_err(&card->gdev->dev, 1227 "The LAN cannot have more secondary Bridge Ports\n"); 1228 break; 1229 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1230 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1231 rc = -EBUSY; 1232 dev_err(&card->gdev->dev, 1233 "The device is already a primary Bridge Port\n"); 1234 break; 1235 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1236 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1237 rc = -EACCES; 1238 dev_err(&card->gdev->dev, 1239 "The device is not authorized to be a Bridge Port\n"); 1240 break; 1241 default: 1242 rc = -EIO; 1243 } 1244 } else { 1245 switch (ipa_rc) { 1246 case IPA_RC_NOTSUPP: 1247 rc = -EOPNOTSUPP; 1248 break; 1249 case IPA_RC_UNSUPPORTED_COMMAND: 1250 rc = -EOPNOTSUPP; 1251 break; 1252 default: 1253 rc = -EIO; 1254 } 1255 } 1256 1257 if (rc) { 1258 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc); 1259 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc); 1260 } 1261 return rc; 1262 } 1263 1264 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1265 enum qeth_ipa_sbp_cmd sbp_cmd, 1266 unsigned int data_length) 1267 { 1268 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD : 1269 IPA_CMD_SETBRIDGEPORT_OSA; 1270 struct qeth_ipacmd_sbp_hdr *hdr; 1271 struct qeth_cmd_buffer *iob; 1272 1273 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE, 1274 data_length + 1275 offsetof(struct qeth_ipacmd_setbridgeport, 1276 data)); 1277 if (!iob) 1278 return iob; 1279 1280 hdr = &__ipa_cmd(iob)->data.sbp.hdr; 1281 hdr->cmdlength = sizeof(*hdr) + data_length; 1282 hdr->command_code = sbp_cmd; 1283 hdr->used_total = 1; 1284 hdr->seq_no = 1; 1285 return iob; 1286 } 1287 1288 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1289 struct qeth_reply *reply, unsigned long data) 1290 { 1291 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1292 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1293 int rc; 1294 1295 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1296 rc = qeth_bridgeport_makerc(card, cmd); 1297 if (rc) 1298 return rc; 1299 1300 cbctl->data.supported = 1301 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1302 return 0; 1303 } 1304 1305 /** 1306 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1307 * @card: qeth_card structure pointer. 1308 * 1309 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1310 * strucutre: card->options.sbp.supported_funcs. 1311 */ 1312 static void qeth_bridgeport_query_support(struct qeth_card *card) 1313 { 1314 struct qeth_cmd_buffer *iob; 1315 struct _qeth_sbp_cbctl cbctl; 1316 1317 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1318 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1319 SBP_DATA_SIZEOF(query_cmds_supp)); 1320 if (!iob) 1321 return; 1322 1323 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1324 &cbctl)) { 1325 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1326 card->options.sbp.supported_funcs = 0; 1327 return; 1328 } 1329 card->options.sbp.supported_funcs = cbctl.data.supported; 1330 } 1331 1332 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1333 struct qeth_reply *reply, unsigned long data) 1334 { 1335 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1336 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1337 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1338 int rc; 1339 1340 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1341 rc = qeth_bridgeport_makerc(card, cmd); 1342 if (rc) 1343 return rc; 1344 1345 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1346 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1347 return -EINVAL; 1348 } 1349 /* first entry contains the state of the local port */ 1350 if (qports->num_entries > 0) { 1351 if (cbctl->data.qports.role) 1352 *cbctl->data.qports.role = qports->entry[0].role; 1353 if (cbctl->data.qports.state) 1354 *cbctl->data.qports.state = qports->entry[0].state; 1355 } 1356 return 0; 1357 } 1358 1359 /** 1360 * qeth_bridgeport_query_ports() - query local bridgeport status. 1361 * @card: qeth_card structure pointer. 1362 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1363 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1364 * 1365 * Returns negative errno-compatible error indication or 0 on success. 1366 * 1367 * 'role' and 'state' are not updated in case of hardware operation failure. 1368 */ 1369 int qeth_bridgeport_query_ports(struct qeth_card *card, 1370 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1371 { 1372 struct qeth_cmd_buffer *iob; 1373 struct _qeth_sbp_cbctl cbctl = { 1374 .data = { 1375 .qports = { 1376 .role = role, 1377 .state = state, 1378 }, 1379 }, 1380 }; 1381 1382 QETH_CARD_TEXT(card, 2, "brqports"); 1383 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1384 return -EOPNOTSUPP; 1385 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1386 if (!iob) 1387 return -ENOMEM; 1388 1389 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1390 &cbctl); 1391 } 1392 1393 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1394 struct qeth_reply *reply, unsigned long data) 1395 { 1396 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1397 1398 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1399 return qeth_bridgeport_makerc(card, cmd); 1400 } 1401 1402 /** 1403 * qeth_bridgeport_setrole() - Assign primary role to the port. 1404 * @card: qeth_card structure pointer. 1405 * @role: Role to assign. 1406 * 1407 * Returns negative errno-compatible error indication or 0 on success. 1408 */ 1409 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1410 { 1411 struct qeth_cmd_buffer *iob; 1412 enum qeth_ipa_sbp_cmd setcmd; 1413 unsigned int cmdlength = 0; 1414 1415 QETH_CARD_TEXT(card, 2, "brsetrol"); 1416 switch (role) { 1417 case QETH_SBP_ROLE_NONE: 1418 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1419 break; 1420 case QETH_SBP_ROLE_PRIMARY: 1421 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1422 cmdlength = SBP_DATA_SIZEOF(set_primary); 1423 break; 1424 case QETH_SBP_ROLE_SECONDARY: 1425 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1426 break; 1427 default: 1428 return -EINVAL; 1429 } 1430 if (!(card->options.sbp.supported_funcs & setcmd)) 1431 return -EOPNOTSUPP; 1432 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1433 if (!iob) 1434 return -ENOMEM; 1435 1436 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL); 1437 } 1438 1439 /** 1440 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1441 * @card: qeth_card structure pointer, for debug messages. 1442 * 1443 * Returns negative errno-compatible error indication or 0 on success. 1444 */ 1445 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1446 { 1447 int rc; 1448 1449 if (pnso_rc == 0) 1450 switch (response) { 1451 case 0x0001: 1452 rc = 0; 1453 break; 1454 case 0x0004: 1455 case 0x0100: 1456 case 0x0106: 1457 rc = -EOPNOTSUPP; 1458 dev_err(&card->gdev->dev, 1459 "Setting address notification failed\n"); 1460 break; 1461 case 0x0107: 1462 rc = -EAGAIN; 1463 break; 1464 default: 1465 rc = -EIO; 1466 } 1467 else 1468 rc = -EIO; 1469 1470 if (rc) { 1471 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1472 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1473 } 1474 return rc; 1475 } 1476 1477 static void qeth_bridgeport_an_set_cb(void *priv, 1478 enum qdio_brinfo_entry_type type, void *entry) 1479 { 1480 struct qeth_card *card = (struct qeth_card *)priv; 1481 struct qdio_brinfo_entry_l2 *l2entry; 1482 u8 code; 1483 1484 if (type != l2_addr_lnid) { 1485 WARN_ON_ONCE(1); 1486 return; 1487 } 1488 1489 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1490 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1491 if (l2entry->addr_lnid.lnid < VLAN_N_VID) 1492 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1493 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1494 (struct net_if_token *)&l2entry->nit, 1495 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1496 } 1497 1498 /** 1499 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1500 * @card: qeth_card structure pointer. 1501 * @enable: 0 - disable, non-zero - enable notifications 1502 * 1503 * Returns negative errno-compatible error indication or 0 on success. 1504 * 1505 * On enable, emits a series of address notifications udev events for all 1506 * currently registered hosts. 1507 */ 1508 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 1509 { 1510 int rc; 1511 u16 response; 1512 struct ccw_device *ddev; 1513 struct subchannel_id schid; 1514 1515 if (!card) 1516 return -EINVAL; 1517 if (!card->options.sbp.supported_funcs) 1518 return -EOPNOTSUPP; 1519 ddev = CARD_DDEV(card); 1520 ccw_device_get_schid(ddev, &schid); 1521 1522 if (enable) { 1523 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 1524 rc = qdio_pnso_brinfo(schid, 1, &response, 1525 qeth_bridgeport_an_set_cb, card); 1526 } else 1527 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 1528 return qeth_anset_makerc(card, rc, response); 1529 } 1530 1531 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 1532 { 1533 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 1534 card->options.sbp.hostnotification); 1535 } 1536 1537 /* VNIC Characteristics support */ 1538 1539 /* handle VNICC IPA command return codes; convert to error codes */ 1540 static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc) 1541 { 1542 int rc; 1543 1544 switch (ipa_rc) { 1545 case IPA_RC_SUCCESS: 1546 return ipa_rc; 1547 case IPA_RC_L2_UNSUPPORTED_CMD: 1548 case IPA_RC_NOTSUPP: 1549 rc = -EOPNOTSUPP; 1550 break; 1551 case IPA_RC_VNICC_OOSEQ: 1552 rc = -EALREADY; 1553 break; 1554 case IPA_RC_VNICC_VNICBP: 1555 rc = -EBUSY; 1556 break; 1557 case IPA_RC_L2_ADDR_TABLE_FULL: 1558 rc = -ENOSPC; 1559 break; 1560 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 1561 rc = -EACCES; 1562 break; 1563 default: 1564 rc = -EIO; 1565 } 1566 1567 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 1568 return rc; 1569 } 1570 1571 /* generic VNICC request call back control */ 1572 struct _qeth_l2_vnicc_request_cbctl { 1573 struct { 1574 union{ 1575 u32 *sup_cmds; 1576 u32 *timeout; 1577 }; 1578 } result; 1579 }; 1580 1581 /* generic VNICC request call back */ 1582 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 1583 struct qeth_reply *reply, 1584 unsigned long data) 1585 { 1586 struct _qeth_l2_vnicc_request_cbctl *cbctl = 1587 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 1588 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1589 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 1590 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command; 1591 1592 QETH_CARD_TEXT(card, 2, "vniccrcb"); 1593 if (cmd->hdr.return_code) 1594 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code); 1595 /* return results to caller */ 1596 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported; 1597 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled; 1598 1599 if (sub_cmd == IPA_VNICC_QUERY_CMDS) 1600 *cbctl->result.sup_cmds = rep->data.query_cmds.sup_cmds; 1601 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT) 1602 *cbctl->result.timeout = rep->data.getset_timeout.timeout; 1603 1604 return 0; 1605 } 1606 1607 static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card, 1608 u32 vnicc_cmd, 1609 unsigned int data_length) 1610 { 1611 struct qeth_ipacmd_vnicc_hdr *hdr; 1612 struct qeth_cmd_buffer *iob; 1613 1614 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE, 1615 data_length + 1616 offsetof(struct qeth_ipacmd_vnicc, data)); 1617 if (!iob) 1618 return NULL; 1619 1620 hdr = &__ipa_cmd(iob)->data.vnicc.hdr; 1621 hdr->data_length = sizeof(*hdr) + data_length; 1622 hdr->sub_command = vnicc_cmd; 1623 return iob; 1624 } 1625 1626 /* VNICC query VNIC characteristics request */ 1627 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 1628 { 1629 struct qeth_cmd_buffer *iob; 1630 1631 QETH_CARD_TEXT(card, 2, "vniccqch"); 1632 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0); 1633 if (!iob) 1634 return -ENOMEM; 1635 1636 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1637 } 1638 1639 /* VNICC query sub commands request */ 1640 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 1641 u32 *sup_cmds) 1642 { 1643 struct _qeth_l2_vnicc_request_cbctl cbctl; 1644 struct qeth_cmd_buffer *iob; 1645 1646 QETH_CARD_TEXT(card, 2, "vniccqcm"); 1647 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS, 1648 VNICC_DATA_SIZEOF(query_cmds)); 1649 if (!iob) 1650 return -ENOMEM; 1651 1652 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char; 1653 1654 /* prepare callback control */ 1655 cbctl.result.sup_cmds = sup_cmds; 1656 1657 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl); 1658 } 1659 1660 /* VNICC enable/disable characteristic request */ 1661 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 1662 u32 cmd) 1663 { 1664 struct qeth_cmd_buffer *iob; 1665 1666 QETH_CARD_TEXT(card, 2, "vniccedc"); 1667 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char)); 1668 if (!iob) 1669 return -ENOMEM; 1670 1671 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char; 1672 1673 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1674 } 1675 1676 /* VNICC get/set timeout for characteristic request */ 1677 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 1678 u32 cmd, u32 *timeout) 1679 { 1680 struct qeth_vnicc_getset_timeout *getset_timeout; 1681 struct _qeth_l2_vnicc_request_cbctl cbctl; 1682 struct qeth_cmd_buffer *iob; 1683 1684 QETH_CARD_TEXT(card, 2, "vniccgst"); 1685 iob = qeth_l2_vnicc_build_cmd(card, cmd, 1686 VNICC_DATA_SIZEOF(getset_timeout)); 1687 if (!iob) 1688 return -ENOMEM; 1689 1690 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout; 1691 getset_timeout->vnic_char = vnicc; 1692 1693 if (cmd == IPA_VNICC_SET_TIMEOUT) 1694 getset_timeout->timeout = *timeout; 1695 1696 /* prepare callback control */ 1697 if (cmd == IPA_VNICC_GET_TIMEOUT) 1698 cbctl.result.timeout = timeout; 1699 1700 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl); 1701 } 1702 1703 /* set current VNICC flag state; called from sysfs store function */ 1704 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 1705 { 1706 int rc = 0; 1707 u32 cmd; 1708 1709 QETH_CARD_TEXT(card, 2, "vniccsch"); 1710 1711 /* check if characteristic and enable/disable are supported */ 1712 if (!(card->options.vnicc.sup_chars & vnicc) || 1713 !(card->options.vnicc.set_char_sup & vnicc)) 1714 return -EOPNOTSUPP; 1715 1716 if (qeth_bridgeport_is_in_use(card)) 1717 return -EBUSY; 1718 1719 /* set enable/disable command and store wanted characteristic */ 1720 if (state) { 1721 cmd = IPA_VNICC_ENABLE; 1722 card->options.vnicc.wanted_chars |= vnicc; 1723 } else { 1724 cmd = IPA_VNICC_DISABLE; 1725 card->options.vnicc.wanted_chars &= ~vnicc; 1726 } 1727 1728 /* do we need to do anything? */ 1729 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 1730 return rc; 1731 1732 /* if card is not ready, simply stop here */ 1733 if (!qeth_card_hw_is_reachable(card)) { 1734 if (state) 1735 card->options.vnicc.cur_chars |= vnicc; 1736 else 1737 card->options.vnicc.cur_chars &= ~vnicc; 1738 return rc; 1739 } 1740 1741 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 1742 if (rc) 1743 card->options.vnicc.wanted_chars = 1744 card->options.vnicc.cur_chars; 1745 else { 1746 /* successful online VNICC change; handle special cases */ 1747 if (state && vnicc == QETH_VNICC_RX_BCAST) 1748 card->options.vnicc.rx_bcast_enabled = true; 1749 if (!state && vnicc == QETH_VNICC_LEARNING) 1750 qeth_l2_vnicc_recover_timeout(card, vnicc, 1751 &card->options.vnicc.learning_timeout); 1752 } 1753 1754 return rc; 1755 } 1756 1757 /* get current VNICC flag state; called from sysfs show function */ 1758 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 1759 { 1760 int rc = 0; 1761 1762 QETH_CARD_TEXT(card, 2, "vniccgch"); 1763 1764 /* check if characteristic is supported */ 1765 if (!(card->options.vnicc.sup_chars & vnicc)) 1766 return -EOPNOTSUPP; 1767 1768 if (qeth_bridgeport_is_in_use(card)) 1769 return -EBUSY; 1770 1771 /* if card is ready, query current VNICC state */ 1772 if (qeth_card_hw_is_reachable(card)) 1773 rc = qeth_l2_vnicc_query_chars(card); 1774 1775 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 1776 return rc; 1777 } 1778 1779 /* set VNICC timeout; called from sysfs store function. Currently, only learning 1780 * supports timeout 1781 */ 1782 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 1783 { 1784 int rc = 0; 1785 1786 QETH_CARD_TEXT(card, 2, "vniccsto"); 1787 1788 /* check if characteristic and set_timeout are supported */ 1789 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 1790 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 1791 return -EOPNOTSUPP; 1792 1793 if (qeth_bridgeport_is_in_use(card)) 1794 return -EBUSY; 1795 1796 /* do we need to do anything? */ 1797 if (card->options.vnicc.learning_timeout == timeout) 1798 return rc; 1799 1800 /* if card is not ready, simply store the value internally and return */ 1801 if (!qeth_card_hw_is_reachable(card)) { 1802 card->options.vnicc.learning_timeout = timeout; 1803 return rc; 1804 } 1805 1806 /* send timeout value to card; if successful, store value internally */ 1807 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 1808 IPA_VNICC_SET_TIMEOUT, &timeout); 1809 if (!rc) 1810 card->options.vnicc.learning_timeout = timeout; 1811 1812 return rc; 1813 } 1814 1815 /* get current VNICC timeout; called from sysfs show function. Currently, only 1816 * learning supports timeout 1817 */ 1818 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 1819 { 1820 int rc = 0; 1821 1822 QETH_CARD_TEXT(card, 2, "vniccgto"); 1823 1824 /* check if characteristic and get_timeout are supported */ 1825 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 1826 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 1827 return -EOPNOTSUPP; 1828 1829 if (qeth_bridgeport_is_in_use(card)) 1830 return -EBUSY; 1831 1832 /* if card is ready, get timeout. Otherwise, just return stored value */ 1833 *timeout = card->options.vnicc.learning_timeout; 1834 if (qeth_card_hw_is_reachable(card)) 1835 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 1836 IPA_VNICC_GET_TIMEOUT, 1837 timeout); 1838 1839 return rc; 1840 } 1841 1842 /* check if VNICC is currently enabled */ 1843 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 1844 { 1845 if (!card->options.vnicc.sup_chars) 1846 return false; 1847 /* default values are only OK if rx_bcast was not enabled by user 1848 * or the card is offline. 1849 */ 1850 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 1851 if (!card->options.vnicc.rx_bcast_enabled || 1852 !qeth_card_hw_is_reachable(card)) 1853 return false; 1854 } 1855 return true; 1856 } 1857 1858 /* recover user timeout setting */ 1859 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 1860 u32 *timeout) 1861 { 1862 if (card->options.vnicc.sup_chars & vnicc && 1863 card->options.vnicc.getset_timeout_sup & vnicc && 1864 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 1865 timeout)) 1866 return false; 1867 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 1868 return true; 1869 } 1870 1871 /* recover user characteristic setting */ 1872 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 1873 bool enable) 1874 { 1875 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 1876 1877 if (card->options.vnicc.sup_chars & vnicc && 1878 card->options.vnicc.set_char_sup & vnicc && 1879 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 1880 return false; 1881 card->options.vnicc.wanted_chars &= ~vnicc; 1882 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 1883 return true; 1884 } 1885 1886 /* (re-)initialize VNICC */ 1887 static void qeth_l2_vnicc_init(struct qeth_card *card) 1888 { 1889 u32 *timeout = &card->options.vnicc.learning_timeout; 1890 bool enable, error = false; 1891 unsigned int chars_len, i; 1892 unsigned long chars_tmp; 1893 u32 sup_cmds, vnicc; 1894 1895 QETH_CARD_TEXT(card, 2, "vniccini"); 1896 /* reset rx_bcast */ 1897 card->options.vnicc.rx_bcast_enabled = 0; 1898 /* initial query and storage of VNIC characteristics */ 1899 if (qeth_l2_vnicc_query_chars(card)) { 1900 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 1901 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 1902 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 1903 /* fail quietly if user didn't change the default config */ 1904 card->options.vnicc.sup_chars = 0; 1905 card->options.vnicc.cur_chars = 0; 1906 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 1907 return; 1908 } 1909 /* get supported commands for each supported characteristic */ 1910 chars_tmp = card->options.vnicc.sup_chars; 1911 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 1912 for_each_set_bit(i, &chars_tmp, chars_len) { 1913 vnicc = BIT(i); 1914 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) { 1915 sup_cmds = 0; 1916 error = true; 1917 } 1918 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) && 1919 (sup_cmds & IPA_VNICC_GET_TIMEOUT)) 1920 card->options.vnicc.getset_timeout_sup |= vnicc; 1921 else 1922 card->options.vnicc.getset_timeout_sup &= ~vnicc; 1923 if ((sup_cmds & IPA_VNICC_ENABLE) && 1924 (sup_cmds & IPA_VNICC_DISABLE)) 1925 card->options.vnicc.set_char_sup |= vnicc; 1926 else 1927 card->options.vnicc.set_char_sup &= ~vnicc; 1928 } 1929 /* enforce assumed default values and recover settings, if changed */ 1930 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 1931 timeout); 1932 /* Change chars, if necessary */ 1933 chars_tmp = card->options.vnicc.wanted_chars ^ 1934 card->options.vnicc.cur_chars; 1935 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 1936 for_each_set_bit(i, &chars_tmp, chars_len) { 1937 vnicc = BIT(i); 1938 enable = card->options.vnicc.wanted_chars & vnicc; 1939 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 1940 } 1941 if (error) 1942 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 1943 } 1944 1945 /* configure default values of VNIC characteristics */ 1946 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 1947 { 1948 /* characteristics values */ 1949 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 1950 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 1951 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 1952 /* supported commands */ 1953 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 1954 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 1955 /* settings wanted by users */ 1956 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 1957 } 1958 1959 module_init(qeth_l2_init); 1960 module_exit(qeth_l2_exit); 1961 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 1962 MODULE_DESCRIPTION("qeth layer 2 discipline"); 1963 MODULE_LICENSE("GPL"); 1964