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