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 int qeth_l2_set_offline(struct ccwgroup_device *); 28 static void qeth_bridgeport_query_support(struct qeth_card *card); 29 static void qeth_bridge_state_change(struct qeth_card *card, 30 struct qeth_ipa_cmd *cmd); 31 static void qeth_bridge_host_event(struct qeth_card *card, 32 struct qeth_ipa_cmd *cmd); 33 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); 34 static void qeth_l2_vnicc_init(struct qeth_card *card); 35 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 36 u32 *timeout); 37 38 static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode) 39 { 40 int rc; 41 42 if (retcode) 43 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 44 switch (retcode) { 45 case IPA_RC_SUCCESS: 46 rc = 0; 47 break; 48 case IPA_RC_L2_UNSUPPORTED_CMD: 49 rc = -EOPNOTSUPP; 50 break; 51 case IPA_RC_L2_ADDR_TABLE_FULL: 52 rc = -ENOSPC; 53 break; 54 case IPA_RC_L2_DUP_MAC: 55 case IPA_RC_L2_DUP_LAYER3_MAC: 56 rc = -EEXIST; 57 break; 58 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 59 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 60 rc = -EPERM; 61 break; 62 case IPA_RC_L2_MAC_NOT_FOUND: 63 rc = -ENOENT; 64 break; 65 default: 66 rc = -EIO; 67 break; 68 } 69 return rc; 70 } 71 72 static int qeth_l2_send_setdelmac_cb(struct qeth_card *card, 73 struct qeth_reply *reply, 74 unsigned long data) 75 { 76 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 77 78 return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code); 79 } 80 81 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 82 enum qeth_ipa_cmds ipacmd) 83 { 84 struct qeth_ipa_cmd *cmd; 85 struct qeth_cmd_buffer *iob; 86 87 QETH_CARD_TEXT(card, 2, "L2sdmac"); 88 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4, 89 IPA_DATA_SIZEOF(setdelmac)); 90 if (!iob) 91 return -ENOMEM; 92 cmd = __ipa_cmd(iob); 93 cmd->data.setdelmac.mac_length = ETH_ALEN; 94 ether_addr_copy(cmd->data.setdelmac.mac, mac); 95 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelmac_cb, NULL); 96 } 97 98 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 99 { 100 int rc; 101 102 QETH_CARD_TEXT(card, 2, "L2Setmac"); 103 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 104 if (rc == 0) { 105 dev_info(&card->gdev->dev, 106 "MAC address %pM successfully registered\n", mac); 107 } else { 108 switch (rc) { 109 case -EEXIST: 110 dev_warn(&card->gdev->dev, 111 "MAC address %pM already exists\n", mac); 112 break; 113 case -EPERM: 114 dev_warn(&card->gdev->dev, 115 "MAC address %pM is not authorized\n", mac); 116 break; 117 } 118 } 119 return rc; 120 } 121 122 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) 123 { 124 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? 125 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC; 126 int rc; 127 128 QETH_CARD_TEXT(card, 2, "L2Wmac"); 129 rc = qeth_l2_send_setdelmac(card, mac, cmd); 130 if (rc == -EEXIST) 131 QETH_DBF_MESSAGE(2, "MAC already registered on device %x\n", 132 CARD_DEVID(card)); 133 else if (rc) 134 QETH_DBF_MESSAGE(2, "Failed to register MAC on device %x: %d\n", 135 CARD_DEVID(card), rc); 136 return rc; 137 } 138 139 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) 140 { 141 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? 142 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; 143 int rc; 144 145 QETH_CARD_TEXT(card, 2, "L2Rmac"); 146 rc = qeth_l2_send_setdelmac(card, mac, cmd); 147 if (rc) 148 QETH_DBF_MESSAGE(2, "Failed to delete MAC on device %u: %d\n", 149 CARD_DEVID(card), rc); 150 return rc; 151 } 152 153 static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card) 154 { 155 struct qeth_mac *mac; 156 struct hlist_node *tmp; 157 int i; 158 159 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 160 hash_del(&mac->hnode); 161 kfree(mac); 162 } 163 } 164 165 static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue, 166 struct qeth_hdr *hdr, struct sk_buff *skb, 167 int ipv, unsigned int data_len) 168 { 169 int cast_type = qeth_get_ether_cast_type(skb); 170 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 171 172 hdr->hdr.l2.pkt_length = data_len; 173 174 if (skb_is_gso(skb)) { 175 hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO; 176 } else { 177 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 178 if (skb->ip_summed == CHECKSUM_PARTIAL) 179 qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv); 180 } 181 182 /* set byte byte 3 to casting flags */ 183 if (cast_type == RTN_MULTICAST) 184 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 185 else if (cast_type == RTN_BROADCAST) 186 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 187 else 188 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 189 190 /* VSWITCH relies on the VLAN 191 * information to be present in 192 * the QDIO header */ 193 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 194 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 195 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 196 } 197 } 198 199 static int qeth_l2_setdelvlan_makerc(struct qeth_card *card, u16 retcode) 200 { 201 if (retcode) 202 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 203 204 switch (retcode) { 205 case IPA_RC_SUCCESS: 206 return 0; 207 case IPA_RC_L2_INVALID_VLAN_ID: 208 return -EINVAL; 209 case IPA_RC_L2_DUP_VLAN_ID: 210 return -EEXIST; 211 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 212 return -ENOENT; 213 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 214 return -EPERM; 215 default: 216 return -EIO; 217 } 218 } 219 220 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 221 struct qeth_reply *reply, 222 unsigned long data) 223 { 224 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 225 226 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 227 if (cmd->hdr.return_code) { 228 QETH_DBF_MESSAGE(2, "Error in processing VLAN %u on device %x: %#x.\n", 229 cmd->data.setdelvlan.vlan_id, 230 CARD_DEVID(card), cmd->hdr.return_code); 231 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 232 } 233 return qeth_l2_setdelvlan_makerc(card, cmd->hdr.return_code); 234 } 235 236 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 237 enum qeth_ipa_cmds ipacmd) 238 { 239 struct qeth_ipa_cmd *cmd; 240 struct qeth_cmd_buffer *iob; 241 242 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 243 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4, 244 IPA_DATA_SIZEOF(setdelvlan)); 245 if (!iob) 246 return -ENOMEM; 247 cmd = __ipa_cmd(iob); 248 cmd->data.setdelvlan.vlan_id = i; 249 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelvlan_cb, NULL); 250 } 251 252 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 253 __be16 proto, u16 vid) 254 { 255 struct qeth_card *card = dev->ml_priv; 256 257 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 258 if (!vid) 259 return 0; 260 261 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 262 } 263 264 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 265 __be16 proto, u16 vid) 266 { 267 struct qeth_card *card = dev->ml_priv; 268 269 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 270 if (!vid) 271 return 0; 272 273 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 274 } 275 276 static void qeth_l2_stop_card(struct qeth_card *card) 277 { 278 QETH_CARD_TEXT(card, 2, "stopcard"); 279 280 qeth_set_allowed_threads(card, 0, 1); 281 282 cancel_work_sync(&card->rx_mode_work); 283 qeth_l2_drain_rx_mode_cache(card); 284 285 if (card->state == CARD_STATE_SOFTSETUP) { 286 qeth_clear_ipacmd_list(card); 287 card->state = CARD_STATE_HARDSETUP; 288 } 289 if (card->state == CARD_STATE_HARDSETUP) { 290 qeth_drain_output_queues(card); 291 qeth_clear_working_pool_list(card); 292 card->state = CARD_STATE_DOWN; 293 } 294 295 qeth_qdio_clear_card(card, 0); 296 flush_workqueue(card->event_wq); 297 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 298 card->info.promisc_mode = 0; 299 } 300 301 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 302 int budget, int *done) 303 { 304 int work_done = 0; 305 struct sk_buff *skb; 306 struct qeth_hdr *hdr; 307 unsigned int len; 308 309 *done = 0; 310 WARN_ON_ONCE(!budget); 311 while (budget) { 312 skb = qeth_core_get_next_skb(card, 313 &card->qdio.in_q->bufs[card->rx.b_index], 314 &card->rx.b_element, &card->rx.e_offset, &hdr); 315 if (!skb) { 316 *done = 1; 317 break; 318 } 319 320 if (hdr->hdr.l2.id == QETH_HEADER_TYPE_LAYER2) { 321 skb->protocol = eth_type_trans(skb, skb->dev); 322 qeth_rx_csum(card, skb, hdr->hdr.l2.flags[1]); 323 len = skb->len; 324 napi_gro_receive(&card->napi, skb); 325 } else { 326 skb_push(skb, sizeof(*hdr)); 327 skb_copy_to_linear_data(skb, hdr, sizeof(*hdr)); 328 len = skb->len; 329 card->osn_info.data_cb(skb); 330 } 331 332 work_done++; 333 budget--; 334 QETH_CARD_STAT_INC(card, rx_packets); 335 QETH_CARD_STAT_ADD(card, rx_bytes, len); 336 } 337 return work_done; 338 } 339 340 static int qeth_l2_request_initial_mac(struct qeth_card *card) 341 { 342 int rc = 0; 343 344 QETH_CARD_TEXT(card, 2, "l2reqmac"); 345 346 if (MACHINE_IS_VM) { 347 rc = qeth_vm_request_mac(card); 348 if (!rc) 349 goto out; 350 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n", 351 CARD_DEVID(card), rc); 352 QETH_CARD_TEXT_(card, 2, "err%04x", rc); 353 /* fall back to alternative mechanism: */ 354 } 355 356 if (!IS_OSN(card)) { 357 rc = qeth_setadpparms_change_macaddr(card); 358 if (!rc) 359 goto out; 360 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n", 361 CARD_DEVID(card), rc); 362 QETH_CARD_TEXT_(card, 2, "1err%04x", rc); 363 /* fall back once more: */ 364 } 365 366 /* some devices don't support a custom MAC address: */ 367 if (IS_OSM(card) || IS_OSX(card)) 368 return (rc) ? rc : -EADDRNOTAVAIL; 369 eth_hw_addr_random(card->dev); 370 371 out: 372 QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len); 373 return 0; 374 } 375 376 static void qeth_l2_register_dev_addr(struct qeth_card *card) 377 { 378 if (!is_valid_ether_addr(card->dev->dev_addr)) 379 qeth_l2_request_initial_mac(card); 380 381 if (!IS_OSN(card) && !qeth_l2_send_setmac(card, card->dev->dev_addr)) 382 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 383 } 384 385 static int qeth_l2_validate_addr(struct net_device *dev) 386 { 387 struct qeth_card *card = dev->ml_priv; 388 389 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) 390 return eth_validate_addr(dev); 391 392 QETH_CARD_TEXT(card, 4, "nomacadr"); 393 return -EPERM; 394 } 395 396 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 397 { 398 struct sockaddr *addr = p; 399 struct qeth_card *card = dev->ml_priv; 400 u8 old_addr[ETH_ALEN]; 401 int rc = 0; 402 403 QETH_CARD_TEXT(card, 3, "setmac"); 404 405 if (IS_OSM(card) || IS_OSX(card)) { 406 QETH_CARD_TEXT(card, 3, "setmcTYP"); 407 return -EOPNOTSUPP; 408 } 409 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 410 if (!is_valid_ether_addr(addr->sa_data)) 411 return -EADDRNOTAVAIL; 412 413 /* don't register the same address twice */ 414 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) && 415 (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 416 return 0; 417 418 /* add the new address, switch over, drop the old */ 419 rc = qeth_l2_send_setmac(card, addr->sa_data); 420 if (rc) 421 return rc; 422 ether_addr_copy(old_addr, dev->dev_addr); 423 ether_addr_copy(dev->dev_addr, addr->sa_data); 424 425 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) 426 qeth_l2_remove_mac(card, old_addr); 427 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 428 return 0; 429 } 430 431 static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable) 432 { 433 int role; 434 int rc; 435 436 QETH_CARD_TEXT(card, 3, "pmisc2br"); 437 438 if (enable) { 439 if (card->options.sbp.reflect_promisc_primary) 440 role = QETH_SBP_ROLE_PRIMARY; 441 else 442 role = QETH_SBP_ROLE_SECONDARY; 443 } else 444 role = QETH_SBP_ROLE_NONE; 445 446 rc = qeth_bridgeport_setrole(card, role); 447 QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc); 448 if (!rc) { 449 card->options.sbp.role = role; 450 card->info.promisc_mode = enable; 451 } 452 } 453 454 static void qeth_l2_set_promisc_mode(struct qeth_card *card) 455 { 456 bool enable = card->dev->flags & IFF_PROMISC; 457 458 if (card->info.promisc_mode == enable) 459 return; 460 461 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) { 462 qeth_setadp_promisc_mode(card, enable); 463 } else { 464 mutex_lock(&card->sbp_lock); 465 if (card->options.sbp.reflect_promisc) 466 qeth_l2_promisc_to_bridge(card, enable); 467 mutex_unlock(&card->sbp_lock); 468 } 469 } 470 471 /* New MAC address is added to the hash table and marked to be written on card 472 * only if there is not in the hash table storage already 473 * 474 */ 475 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 476 { 477 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 478 struct qeth_mac *mac; 479 480 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 481 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 482 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 483 return; 484 } 485 } 486 487 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 488 if (!mac) 489 return; 490 491 ether_addr_copy(mac->mac_addr, ha->addr); 492 mac->disp_flag = QETH_DISP_ADDR_ADD; 493 494 hash_add(card->mac_htable, &mac->hnode, mac_hash); 495 } 496 497 static void qeth_l2_rx_mode_work(struct work_struct *work) 498 { 499 struct qeth_card *card = container_of(work, struct qeth_card, 500 rx_mode_work); 501 struct net_device *dev = card->dev; 502 struct netdev_hw_addr *ha; 503 struct qeth_mac *mac; 504 struct hlist_node *tmp; 505 int i; 506 int rc; 507 508 QETH_CARD_TEXT(card, 3, "setmulti"); 509 510 netif_addr_lock_bh(dev); 511 netdev_for_each_mc_addr(ha, dev) 512 qeth_l2_add_mac(card, ha); 513 netdev_for_each_uc_addr(ha, dev) 514 qeth_l2_add_mac(card, ha); 515 netif_addr_unlock_bh(dev); 516 517 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 518 switch (mac->disp_flag) { 519 case QETH_DISP_ADDR_DELETE: 520 qeth_l2_remove_mac(card, mac->mac_addr); 521 hash_del(&mac->hnode); 522 kfree(mac); 523 break; 524 case QETH_DISP_ADDR_ADD: 525 rc = qeth_l2_write_mac(card, mac->mac_addr); 526 if (rc) { 527 hash_del(&mac->hnode); 528 kfree(mac); 529 break; 530 } 531 /* fall through */ 532 default: 533 /* for next call to set_rx_mode(): */ 534 mac->disp_flag = QETH_DISP_ADDR_DELETE; 535 } 536 } 537 538 qeth_l2_set_promisc_mode(card); 539 } 540 541 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 542 struct qeth_qdio_out_q *queue) 543 { 544 struct qeth_hdr *hdr = (struct qeth_hdr *)skb->data; 545 addr_t end = (addr_t)(skb->data + sizeof(*hdr)); 546 addr_t start = (addr_t)skb->data; 547 unsigned int elements = 0; 548 unsigned int hd_len = 0; 549 int rc; 550 551 if (skb->protocol == htons(ETH_P_IPV6)) 552 return -EPROTONOSUPPORT; 553 554 if (qeth_get_elements_for_range(start, end) > 1) { 555 /* Misaligned HW header, move it to its own buffer element. */ 556 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 557 if (!hdr) 558 return -ENOMEM; 559 hd_len = sizeof(*hdr); 560 skb_copy_from_linear_data(skb, (char *)hdr, hd_len); 561 elements++; 562 } 563 564 elements += qeth_count_elements(skb, hd_len); 565 if (elements > queue->max_elements) { 566 rc = -E2BIG; 567 goto out; 568 } 569 570 rc = qeth_do_send_packet(card, queue, skb, hdr, hd_len, hd_len, 571 elements); 572 out: 573 if (rc && hd_len) 574 kmem_cache_free(qeth_core_header_cache, hdr); 575 return rc; 576 } 577 578 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 579 struct net_device *dev) 580 { 581 struct qeth_card *card = dev->ml_priv; 582 u16 txq = skb_get_queue_mapping(skb); 583 struct qeth_qdio_out_q *queue; 584 int rc; 585 586 if (!skb_is_gso(skb)) 587 qdisc_skb_cb(skb)->pkt_len = skb->len; 588 if (IS_IQD(card)) 589 txq = qeth_iqd_translate_txq(dev, txq); 590 queue = card->qdio.out_qs[txq]; 591 592 if (IS_OSN(card)) 593 rc = qeth_l2_xmit_osn(card, skb, queue); 594 else 595 rc = qeth_xmit(card, skb, queue, qeth_get_ip_version(skb), 596 qeth_l2_fill_header); 597 598 if (!rc) 599 return NETDEV_TX_OK; 600 601 QETH_TXQ_STAT_INC(queue, tx_dropped); 602 kfree_skb(skb); 603 return NETDEV_TX_OK; 604 } 605 606 static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb, 607 struct net_device *sb_dev) 608 { 609 struct qeth_card *card = dev->ml_priv; 610 611 if (IS_IQD(card)) 612 return qeth_iqd_select_queue(dev, skb, 613 qeth_get_ether_cast_type(skb), 614 sb_dev); 615 return qeth_get_priority_queue(card, skb); 616 } 617 618 static const struct device_type qeth_l2_devtype = { 619 .name = "qeth_layer2", 620 .groups = qeth_l2_attr_groups, 621 }; 622 623 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 624 { 625 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 626 int rc; 627 628 qeth_l2_vnicc_set_defaults(card); 629 mutex_init(&card->sbp_lock); 630 631 if (gdev->dev.type == &qeth_generic_devtype) { 632 rc = qeth_l2_create_device_attributes(&gdev->dev); 633 if (rc) 634 return rc; 635 } 636 637 hash_init(card->mac_htable); 638 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work); 639 return 0; 640 } 641 642 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 643 { 644 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 645 646 if (cgdev->dev.type == &qeth_generic_devtype) 647 qeth_l2_remove_device_attributes(&cgdev->dev); 648 qeth_set_allowed_threads(card, 0, 1); 649 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 650 651 if (cgdev->state == CCWGROUP_ONLINE) 652 qeth_l2_set_offline(cgdev); 653 654 cancel_work_sync(&card->close_dev_work); 655 if (qeth_netdev_is_registered(card->dev)) 656 unregister_netdev(card->dev); 657 } 658 659 static void qeth_l2_set_rx_mode(struct net_device *dev) 660 { 661 struct qeth_card *card = dev->ml_priv; 662 663 schedule_work(&card->rx_mode_work); 664 } 665 666 static const struct net_device_ops qeth_l2_netdev_ops = { 667 .ndo_open = qeth_open, 668 .ndo_stop = qeth_stop, 669 .ndo_get_stats64 = qeth_get_stats64, 670 .ndo_start_xmit = qeth_l2_hard_start_xmit, 671 .ndo_features_check = qeth_features_check, 672 .ndo_select_queue = qeth_l2_select_queue, 673 .ndo_validate_addr = qeth_l2_validate_addr, 674 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 675 .ndo_do_ioctl = qeth_do_ioctl, 676 .ndo_set_mac_address = qeth_l2_set_mac_address, 677 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 678 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 679 .ndo_tx_timeout = qeth_tx_timeout, 680 .ndo_fix_features = qeth_fix_features, 681 .ndo_set_features = qeth_set_features 682 }; 683 684 static const struct net_device_ops qeth_osn_netdev_ops = { 685 .ndo_open = qeth_open, 686 .ndo_stop = qeth_stop, 687 .ndo_get_stats64 = qeth_get_stats64, 688 .ndo_start_xmit = qeth_l2_hard_start_xmit, 689 .ndo_validate_addr = eth_validate_addr, 690 .ndo_tx_timeout = qeth_tx_timeout, 691 }; 692 693 static int qeth_l2_setup_netdev(struct qeth_card *card, bool carrier_ok) 694 { 695 int rc; 696 697 if (IS_OSN(card)) { 698 card->dev->netdev_ops = &qeth_osn_netdev_ops; 699 card->dev->flags |= IFF_NOARP; 700 goto add_napi; 701 } 702 703 card->dev->needed_headroom = sizeof(struct qeth_hdr); 704 card->dev->netdev_ops = &qeth_l2_netdev_ops; 705 card->dev->priv_flags |= IFF_UNICAST_FLT; 706 707 if (IS_OSM(card)) { 708 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 709 } else { 710 if (!IS_VM_NIC(card)) 711 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 712 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 713 } 714 715 if (IS_OSD(card) && !IS_VM_NIC(card)) { 716 card->dev->features |= NETIF_F_SG; 717 /* OSA 3S and earlier has no RX/TX support */ 718 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 719 card->dev->hw_features |= NETIF_F_IP_CSUM; 720 card->dev->vlan_features |= NETIF_F_IP_CSUM; 721 } 722 } 723 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 724 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 725 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 726 } 727 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) || 728 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) { 729 card->dev->hw_features |= NETIF_F_RXCSUM; 730 card->dev->vlan_features |= NETIF_F_RXCSUM; 731 } 732 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 733 card->dev->hw_features |= NETIF_F_TSO; 734 card->dev->vlan_features |= NETIF_F_TSO; 735 } 736 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 737 card->dev->hw_features |= NETIF_F_TSO6; 738 card->dev->vlan_features |= NETIF_F_TSO6; 739 } 740 741 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) { 742 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso); 743 netif_set_gso_max_size(card->dev, 744 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)); 745 } 746 747 add_napi: 748 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 749 rc = register_netdev(card->dev); 750 if (!rc && carrier_ok) 751 netif_carrier_on(card->dev); 752 753 if (rc) 754 card->dev->netdev_ops = NULL; 755 return rc; 756 } 757 758 static void qeth_l2_trace_features(struct qeth_card *card) 759 { 760 /* Set BridgePort features */ 761 QETH_CARD_TEXT(card, 2, "featuSBP"); 762 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 763 sizeof(card->options.sbp.supported_funcs)); 764 /* VNIC Characteristics features */ 765 QETH_CARD_TEXT(card, 2, "feaVNICC"); 766 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 767 sizeof(card->options.vnicc.sup_chars)); 768 } 769 770 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 771 { 772 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 773 struct net_device *dev = card->dev; 774 int rc = 0; 775 bool carrier_ok; 776 777 mutex_lock(&card->discipline_mutex); 778 mutex_lock(&card->conf_mutex); 779 QETH_CARD_TEXT(card, 2, "setonlin"); 780 781 rc = qeth_core_hardsetup_card(card, &carrier_ok); 782 if (rc) { 783 QETH_CARD_TEXT_(card, 2, "2err%04x", rc); 784 rc = -ENODEV; 785 goto out_remove; 786 } 787 788 mutex_lock(&card->sbp_lock); 789 qeth_bridgeport_query_support(card); 790 if (card->options.sbp.supported_funcs) 791 dev_info(&card->gdev->dev, 792 "The device represents a Bridge Capable Port\n"); 793 mutex_unlock(&card->sbp_lock); 794 795 qeth_l2_register_dev_addr(card); 796 797 /* for the rx_bcast characteristic, init VNICC after setmac */ 798 qeth_l2_vnicc_init(card); 799 800 qeth_trace_features(card); 801 qeth_l2_trace_features(card); 802 803 qeth_l2_setup_bridgeport_attrs(card); 804 805 card->state = CARD_STATE_HARDSETUP; 806 qeth_print_status_message(card); 807 808 /* softsetup */ 809 QETH_CARD_TEXT(card, 2, "softsetp"); 810 811 rc = qeth_init_qdio_queues(card); 812 if (rc) { 813 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 814 rc = -ENODEV; 815 goto out_remove; 816 } 817 card->state = CARD_STATE_SOFTSETUP; 818 819 qeth_set_allowed_threads(card, 0xffffffff, 0); 820 821 if (!qeth_netdev_is_registered(dev)) { 822 rc = qeth_l2_setup_netdev(card, carrier_ok); 823 if (rc) 824 goto out_remove; 825 } else { 826 rtnl_lock(); 827 if (carrier_ok) 828 netif_carrier_on(dev); 829 else 830 netif_carrier_off(dev); 831 832 netif_device_attach(dev); 833 qeth_enable_hw_features(dev); 834 835 if (card->info.open_when_online) { 836 card->info.open_when_online = 0; 837 dev_open(dev, NULL); 838 } 839 rtnl_unlock(); 840 } 841 /* let user_space know that device is online */ 842 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 843 mutex_unlock(&card->conf_mutex); 844 mutex_unlock(&card->discipline_mutex); 845 return 0; 846 847 out_remove: 848 qeth_l2_stop_card(card); 849 qeth_stop_channel(&card->data); 850 qeth_stop_channel(&card->write); 851 qeth_stop_channel(&card->read); 852 qdio_free(CARD_DDEV(card)); 853 854 mutex_unlock(&card->conf_mutex); 855 mutex_unlock(&card->discipline_mutex); 856 return rc; 857 } 858 859 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 860 int recovery_mode) 861 { 862 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 863 int rc = 0, rc2 = 0, rc3 = 0; 864 865 mutex_lock(&card->discipline_mutex); 866 mutex_lock(&card->conf_mutex); 867 QETH_CARD_TEXT(card, 3, "setoffl"); 868 869 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 870 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 871 card->info.hwtrap = 1; 872 } 873 874 rtnl_lock(); 875 card->info.open_when_online = card->dev->flags & IFF_UP; 876 dev_close(card->dev); 877 netif_device_detach(card->dev); 878 netif_carrier_off(card->dev); 879 rtnl_unlock(); 880 881 qeth_l2_stop_card(card); 882 rc = qeth_stop_channel(&card->data); 883 rc2 = qeth_stop_channel(&card->write); 884 rc3 = qeth_stop_channel(&card->read); 885 if (!rc) 886 rc = (rc2) ? rc2 : rc3; 887 if (rc) 888 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 889 qdio_free(CARD_DDEV(card)); 890 891 /* let user_space know that device is offline */ 892 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 893 mutex_unlock(&card->conf_mutex); 894 mutex_unlock(&card->discipline_mutex); 895 return 0; 896 } 897 898 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 899 { 900 return __qeth_l2_set_offline(cgdev, 0); 901 } 902 903 static int qeth_l2_recover(void *ptr) 904 { 905 struct qeth_card *card; 906 int rc = 0; 907 908 card = (struct qeth_card *) ptr; 909 QETH_CARD_TEXT(card, 2, "recover1"); 910 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 911 return 0; 912 QETH_CARD_TEXT(card, 2, "recover2"); 913 dev_warn(&card->gdev->dev, 914 "A recovery process has been started for the device\n"); 915 __qeth_l2_set_offline(card->gdev, 1); 916 rc = qeth_l2_set_online(card->gdev); 917 if (!rc) 918 dev_info(&card->gdev->dev, 919 "Device successfully recovered!\n"); 920 else { 921 ccwgroup_set_offline(card->gdev); 922 dev_warn(&card->gdev->dev, "The qeth device driver " 923 "failed to recover an error on the device\n"); 924 } 925 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 926 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 927 return 0; 928 } 929 930 static int __init qeth_l2_init(void) 931 { 932 pr_info("register layer 2 discipline\n"); 933 return 0; 934 } 935 936 static void __exit qeth_l2_exit(void) 937 { 938 pr_info("unregister layer 2 discipline\n"); 939 } 940 941 /* Returns zero if the command is successfully "consumed" */ 942 static int qeth_l2_control_event(struct qeth_card *card, 943 struct qeth_ipa_cmd *cmd) 944 { 945 switch (cmd->hdr.command) { 946 case IPA_CMD_SETBRIDGEPORT_OSA: 947 case IPA_CMD_SETBRIDGEPORT_IQD: 948 if (cmd->data.sbp.hdr.command_code == 949 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 950 qeth_bridge_state_change(card, cmd); 951 return 0; 952 } else 953 return 1; 954 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 955 qeth_bridge_host_event(card, cmd); 956 return 0; 957 default: 958 return 1; 959 } 960 } 961 962 struct qeth_discipline qeth_l2_discipline = { 963 .devtype = &qeth_l2_devtype, 964 .process_rx_buffer = qeth_l2_process_inbound_buffer, 965 .recover = qeth_l2_recover, 966 .setup = qeth_l2_probe_device, 967 .remove = qeth_l2_remove_device, 968 .set_online = qeth_l2_set_online, 969 .set_offline = qeth_l2_set_offline, 970 .do_ioctl = NULL, 971 .control_event_handler = qeth_l2_control_event, 972 }; 973 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 974 975 static void qeth_osn_assist_cb(struct qeth_card *card, 976 struct qeth_cmd_buffer *iob, 977 unsigned int data_length) 978 { 979 qeth_notify_cmd(iob, 0); 980 qeth_put_cmd(iob); 981 } 982 983 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 984 { 985 struct qeth_cmd_buffer *iob; 986 struct qeth_card *card; 987 988 if (data_len < 0) 989 return -EINVAL; 990 if (!dev) 991 return -ENODEV; 992 card = dev->ml_priv; 993 if (!card) 994 return -ENODEV; 995 QETH_CARD_TEXT(card, 2, "osnsdmc"); 996 if (!qeth_card_hw_is_reachable(card)) 997 return -ENODEV; 998 999 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_len, 1, 1000 QETH_IPA_TIMEOUT); 1001 if (!iob) 1002 return -ENOMEM; 1003 1004 qeth_prepare_ipa_cmd(card, iob, (u16) data_len); 1005 memcpy(__ipa_cmd(iob), data, data_len); 1006 iob->callback = qeth_osn_assist_cb; 1007 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 1008 } 1009 EXPORT_SYMBOL(qeth_osn_assist); 1010 1011 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1012 int (*assist_cb)(struct net_device *, void *), 1013 int (*data_cb)(struct sk_buff *)) 1014 { 1015 struct qeth_card *card; 1016 char bus_id[16]; 1017 u16 devno; 1018 1019 memcpy(&devno, read_dev_no, 2); 1020 sprintf(bus_id, "0.0.%04x", devno); 1021 card = qeth_get_card_by_busid(bus_id); 1022 if (!card || !IS_OSN(card)) 1023 return -ENODEV; 1024 *dev = card->dev; 1025 1026 QETH_CARD_TEXT(card, 2, "osnreg"); 1027 if ((assist_cb == NULL) || (data_cb == NULL)) 1028 return -EINVAL; 1029 card->osn_info.assist_cb = assist_cb; 1030 card->osn_info.data_cb = data_cb; 1031 return 0; 1032 } 1033 EXPORT_SYMBOL(qeth_osn_register); 1034 1035 void qeth_osn_deregister(struct net_device *dev) 1036 { 1037 struct qeth_card *card; 1038 1039 if (!dev) 1040 return; 1041 card = dev->ml_priv; 1042 if (!card) 1043 return; 1044 QETH_CARD_TEXT(card, 2, "osndereg"); 1045 card->osn_info.assist_cb = NULL; 1046 card->osn_info.data_cb = NULL; 1047 return; 1048 } 1049 EXPORT_SYMBOL(qeth_osn_deregister); 1050 1051 /* SETBRIDGEPORT support, async notifications */ 1052 1053 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1054 1055 /** 1056 * qeth_bridge_emit_host_event() - bridgeport address change notification 1057 * @card: qeth_card structure pointer, for udev events. 1058 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1059 * and reset token and addr_lnid are unused and may be NULL. 1060 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1061 * object, 0 - addition of an object. 1062 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1063 * @token: "network token" structure identifying physical address of the port. 1064 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1065 * 1066 * This function is called when registrations and deregistrations are 1067 * reported by the hardware, and also when notifications are enabled - 1068 * for all currently registered addresses. 1069 */ 1070 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1071 enum qeth_an_event_type evtype, 1072 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1073 { 1074 char str[7][32]; 1075 char *env[8]; 1076 int i = 0; 1077 1078 switch (evtype) { 1079 case anev_reg_unreg: 1080 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1081 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1082 ? "deregister" : "register"); 1083 env[i] = str[i]; i++; 1084 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1085 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1086 addr_lnid->lnid); 1087 env[i] = str[i]; i++; 1088 } 1089 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1090 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1091 addr_lnid->mac); 1092 env[i] = str[i]; i++; 1093 } 1094 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1095 token->cssid, token->ssid, token->devnum); 1096 env[i] = str[i]; i++; 1097 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1098 env[i] = str[i]; i++; 1099 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1100 token->chpid); 1101 env[i] = str[i]; i++; 1102 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1103 env[i] = str[i]; i++; 1104 break; 1105 case anev_abort: 1106 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1107 env[i] = str[i]; i++; 1108 break; 1109 case anev_reset: 1110 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1111 env[i] = str[i]; i++; 1112 break; 1113 } 1114 env[i] = NULL; 1115 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1116 } 1117 1118 struct qeth_bridge_state_data { 1119 struct work_struct worker; 1120 struct qeth_card *card; 1121 struct qeth_sbp_state_change qports; 1122 }; 1123 1124 static void qeth_bridge_state_change_worker(struct work_struct *work) 1125 { 1126 struct qeth_bridge_state_data *data = 1127 container_of(work, struct qeth_bridge_state_data, worker); 1128 /* We are only interested in the first entry - local port */ 1129 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1130 char env_locrem[32]; 1131 char env_role[32]; 1132 char env_state[32]; 1133 char *env[] = { 1134 env_locrem, 1135 env_role, 1136 env_state, 1137 NULL 1138 }; 1139 1140 /* Role should not change by itself, but if it did, */ 1141 /* information from the hardware is authoritative. */ 1142 mutex_lock(&data->card->sbp_lock); 1143 data->card->options.sbp.role = entry->role; 1144 mutex_unlock(&data->card->sbp_lock); 1145 1146 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1147 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1148 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1149 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1150 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1151 "<INVALID>"); 1152 snprintf(env_state, sizeof(env_state), "STATE=%s", 1153 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1154 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1155 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1156 "<INVALID>"); 1157 kobject_uevent_env(&data->card->gdev->dev.kobj, 1158 KOBJ_CHANGE, env); 1159 kfree(data); 1160 } 1161 1162 static void qeth_bridge_state_change(struct qeth_card *card, 1163 struct qeth_ipa_cmd *cmd) 1164 { 1165 struct qeth_sbp_state_change *qports = 1166 &cmd->data.sbp.data.state_change; 1167 struct qeth_bridge_state_data *data; 1168 int extrasize; 1169 1170 QETH_CARD_TEXT(card, 2, "brstchng"); 1171 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1172 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1173 return; 1174 } 1175 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1176 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1177 GFP_ATOMIC); 1178 if (!data) { 1179 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1180 return; 1181 } 1182 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1183 data->card = card; 1184 memcpy(&data->qports, qports, 1185 sizeof(struct qeth_sbp_state_change) + extrasize); 1186 queue_work(card->event_wq, &data->worker); 1187 } 1188 1189 struct qeth_bridge_host_data { 1190 struct work_struct worker; 1191 struct qeth_card *card; 1192 struct qeth_ipacmd_addr_change hostevs; 1193 }; 1194 1195 static void qeth_bridge_host_event_worker(struct work_struct *work) 1196 { 1197 struct qeth_bridge_host_data *data = 1198 container_of(work, struct qeth_bridge_host_data, worker); 1199 int i; 1200 1201 if (data->hostevs.lost_event_mask) { 1202 dev_info(&data->card->gdev->dev, 1203 "Address notification from the Bridge Port stopped %s (%s)\n", 1204 data->card->dev->name, 1205 (data->hostevs.lost_event_mask == 0x01) 1206 ? "Overflow" 1207 : (data->hostevs.lost_event_mask == 0x02) 1208 ? "Bridge port state change" 1209 : "Unknown reason"); 1210 mutex_lock(&data->card->sbp_lock); 1211 data->card->options.sbp.hostnotification = 0; 1212 mutex_unlock(&data->card->sbp_lock); 1213 qeth_bridge_emit_host_event(data->card, anev_abort, 1214 0, NULL, NULL); 1215 } else 1216 for (i = 0; i < data->hostevs.num_entries; i++) { 1217 struct qeth_ipacmd_addr_change_entry *entry = 1218 &data->hostevs.entry[i]; 1219 qeth_bridge_emit_host_event(data->card, 1220 anev_reg_unreg, 1221 entry->change_code, 1222 &entry->token, &entry->addr_lnid); 1223 } 1224 kfree(data); 1225 } 1226 1227 static void qeth_bridge_host_event(struct qeth_card *card, 1228 struct qeth_ipa_cmd *cmd) 1229 { 1230 struct qeth_ipacmd_addr_change *hostevs = 1231 &cmd->data.addrchange; 1232 struct qeth_bridge_host_data *data; 1233 int extrasize; 1234 1235 QETH_CARD_TEXT(card, 2, "brhostev"); 1236 if (cmd->hdr.return_code != 0x0000) { 1237 if (cmd->hdr.return_code == 0x0010) { 1238 if (hostevs->lost_event_mask == 0x00) 1239 hostevs->lost_event_mask = 0xff; 1240 } else { 1241 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1242 cmd->hdr.return_code); 1243 return; 1244 } 1245 } 1246 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1247 hostevs->num_entries; 1248 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1249 GFP_ATOMIC); 1250 if (!data) { 1251 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1252 return; 1253 } 1254 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1255 data->card = card; 1256 memcpy(&data->hostevs, hostevs, 1257 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1258 queue_work(card->event_wq, &data->worker); 1259 } 1260 1261 /* SETBRIDGEPORT support; sending commands */ 1262 1263 struct _qeth_sbp_cbctl { 1264 union { 1265 u32 supported; 1266 struct { 1267 enum qeth_sbp_roles *role; 1268 enum qeth_sbp_states *state; 1269 } qports; 1270 } data; 1271 }; 1272 1273 static int qeth_bridgeport_makerc(struct qeth_card *card, 1274 struct qeth_ipa_cmd *cmd) 1275 { 1276 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp; 1277 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code; 1278 u16 ipa_rc = cmd->hdr.return_code; 1279 u16 sbp_rc = sbp->hdr.return_code; 1280 int rc; 1281 1282 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS) 1283 return 0; 1284 1285 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) || 1286 (!IS_IQD(card) && ipa_rc == sbp_rc)) { 1287 switch (sbp_rc) { 1288 case IPA_RC_SUCCESS: 1289 rc = 0; 1290 break; 1291 case IPA_RC_L2_UNSUPPORTED_CMD: 1292 case IPA_RC_UNSUPPORTED_COMMAND: 1293 rc = -EOPNOTSUPP; 1294 break; 1295 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1296 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1297 rc = -ENODEV; /* maybe not the best code here? */ 1298 dev_err(&card->gdev->dev, 1299 "The device is not configured as a Bridge Port\n"); 1300 break; 1301 case IPA_RC_SBP_OSA_OS_MISMATCH: 1302 case IPA_RC_SBP_IQD_OS_MISMATCH: 1303 rc = -EPERM; 1304 dev_err(&card->gdev->dev, 1305 "A Bridge Port is already configured by a different operating system\n"); 1306 break; 1307 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1308 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1309 switch (setcmd) { 1310 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1311 rc = -EEXIST; 1312 dev_err(&card->gdev->dev, 1313 "The LAN already has a primary Bridge Port\n"); 1314 break; 1315 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1316 rc = -EBUSY; 1317 dev_err(&card->gdev->dev, 1318 "The device is already a primary Bridge Port\n"); 1319 break; 1320 default: 1321 rc = -EIO; 1322 } 1323 break; 1324 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1325 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1326 rc = -EBUSY; 1327 dev_err(&card->gdev->dev, 1328 "The device is already a secondary Bridge Port\n"); 1329 break; 1330 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1331 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1332 rc = -EEXIST; 1333 dev_err(&card->gdev->dev, 1334 "The LAN cannot have more secondary Bridge Ports\n"); 1335 break; 1336 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1337 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1338 rc = -EBUSY; 1339 dev_err(&card->gdev->dev, 1340 "The device is already a primary Bridge Port\n"); 1341 break; 1342 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1343 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1344 rc = -EACCES; 1345 dev_err(&card->gdev->dev, 1346 "The device is not authorized to be a Bridge Port\n"); 1347 break; 1348 default: 1349 rc = -EIO; 1350 } 1351 } else { 1352 switch (ipa_rc) { 1353 case IPA_RC_NOTSUPP: 1354 rc = -EOPNOTSUPP; 1355 break; 1356 case IPA_RC_UNSUPPORTED_COMMAND: 1357 rc = -EOPNOTSUPP; 1358 break; 1359 default: 1360 rc = -EIO; 1361 } 1362 } 1363 1364 if (rc) { 1365 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc); 1366 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc); 1367 } 1368 return rc; 1369 } 1370 1371 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1372 enum qeth_ipa_sbp_cmd sbp_cmd, 1373 unsigned int data_length) 1374 { 1375 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD : 1376 IPA_CMD_SETBRIDGEPORT_OSA; 1377 struct qeth_ipacmd_sbp_hdr *hdr; 1378 struct qeth_cmd_buffer *iob; 1379 1380 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE, 1381 data_length + 1382 offsetof(struct qeth_ipacmd_setbridgeport, 1383 data)); 1384 if (!iob) 1385 return iob; 1386 1387 hdr = &__ipa_cmd(iob)->data.sbp.hdr; 1388 hdr->cmdlength = sizeof(*hdr) + data_length; 1389 hdr->command_code = sbp_cmd; 1390 hdr->used_total = 1; 1391 hdr->seq_no = 1; 1392 return iob; 1393 } 1394 1395 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1396 struct qeth_reply *reply, unsigned long data) 1397 { 1398 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1399 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1400 int rc; 1401 1402 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1403 rc = qeth_bridgeport_makerc(card, cmd); 1404 if (rc) 1405 return rc; 1406 1407 cbctl->data.supported = 1408 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1409 return 0; 1410 } 1411 1412 /** 1413 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1414 * @card: qeth_card structure pointer. 1415 * 1416 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1417 * strucutre: card->options.sbp.supported_funcs. 1418 */ 1419 static void qeth_bridgeport_query_support(struct qeth_card *card) 1420 { 1421 struct qeth_cmd_buffer *iob; 1422 struct _qeth_sbp_cbctl cbctl; 1423 1424 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1425 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1426 SBP_DATA_SIZEOF(query_cmds_supp)); 1427 if (!iob) 1428 return; 1429 1430 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1431 &cbctl)) { 1432 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1433 card->options.sbp.supported_funcs = 0; 1434 return; 1435 } 1436 card->options.sbp.supported_funcs = cbctl.data.supported; 1437 } 1438 1439 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1440 struct qeth_reply *reply, unsigned long data) 1441 { 1442 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1443 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1444 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1445 int rc; 1446 1447 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1448 rc = qeth_bridgeport_makerc(card, cmd); 1449 if (rc) 1450 return rc; 1451 1452 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1453 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1454 return -EINVAL; 1455 } 1456 /* first entry contains the state of the local port */ 1457 if (qports->num_entries > 0) { 1458 if (cbctl->data.qports.role) 1459 *cbctl->data.qports.role = qports->entry[0].role; 1460 if (cbctl->data.qports.state) 1461 *cbctl->data.qports.state = qports->entry[0].state; 1462 } 1463 return 0; 1464 } 1465 1466 /** 1467 * qeth_bridgeport_query_ports() - query local bridgeport status. 1468 * @card: qeth_card structure pointer. 1469 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1470 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1471 * 1472 * Returns negative errno-compatible error indication or 0 on success. 1473 * 1474 * 'role' and 'state' are not updated in case of hardware operation failure. 1475 */ 1476 int qeth_bridgeport_query_ports(struct qeth_card *card, 1477 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1478 { 1479 struct qeth_cmd_buffer *iob; 1480 struct _qeth_sbp_cbctl cbctl = { 1481 .data = { 1482 .qports = { 1483 .role = role, 1484 .state = state, 1485 }, 1486 }, 1487 }; 1488 1489 QETH_CARD_TEXT(card, 2, "brqports"); 1490 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1491 return -EOPNOTSUPP; 1492 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1493 if (!iob) 1494 return -ENOMEM; 1495 1496 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1497 &cbctl); 1498 } 1499 1500 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1501 struct qeth_reply *reply, unsigned long data) 1502 { 1503 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1504 1505 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1506 return qeth_bridgeport_makerc(card, cmd); 1507 } 1508 1509 /** 1510 * qeth_bridgeport_setrole() - Assign primary role to the port. 1511 * @card: qeth_card structure pointer. 1512 * @role: Role to assign. 1513 * 1514 * Returns negative errno-compatible error indication or 0 on success. 1515 */ 1516 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1517 { 1518 struct qeth_cmd_buffer *iob; 1519 enum qeth_ipa_sbp_cmd setcmd; 1520 unsigned int cmdlength = 0; 1521 1522 QETH_CARD_TEXT(card, 2, "brsetrol"); 1523 switch (role) { 1524 case QETH_SBP_ROLE_NONE: 1525 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1526 break; 1527 case QETH_SBP_ROLE_PRIMARY: 1528 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1529 cmdlength = SBP_DATA_SIZEOF(set_primary); 1530 break; 1531 case QETH_SBP_ROLE_SECONDARY: 1532 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1533 break; 1534 default: 1535 return -EINVAL; 1536 } 1537 if (!(card->options.sbp.supported_funcs & setcmd)) 1538 return -EOPNOTSUPP; 1539 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1540 if (!iob) 1541 return -ENOMEM; 1542 1543 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL); 1544 } 1545 1546 /** 1547 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1548 * @card: qeth_card structure pointer, for debug messages. 1549 * 1550 * Returns negative errno-compatible error indication or 0 on success. 1551 */ 1552 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1553 { 1554 int rc; 1555 1556 if (pnso_rc == 0) 1557 switch (response) { 1558 case 0x0001: 1559 rc = 0; 1560 break; 1561 case 0x0004: 1562 case 0x0100: 1563 case 0x0106: 1564 rc = -EOPNOTSUPP; 1565 dev_err(&card->gdev->dev, 1566 "Setting address notification failed\n"); 1567 break; 1568 case 0x0107: 1569 rc = -EAGAIN; 1570 break; 1571 default: 1572 rc = -EIO; 1573 } 1574 else 1575 rc = -EIO; 1576 1577 if (rc) { 1578 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1579 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1580 } 1581 return rc; 1582 } 1583 1584 static void qeth_bridgeport_an_set_cb(void *priv, 1585 enum qdio_brinfo_entry_type type, void *entry) 1586 { 1587 struct qeth_card *card = (struct qeth_card *)priv; 1588 struct qdio_brinfo_entry_l2 *l2entry; 1589 u8 code; 1590 1591 if (type != l2_addr_lnid) { 1592 WARN_ON_ONCE(1); 1593 return; 1594 } 1595 1596 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1597 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1598 if (l2entry->addr_lnid.lnid < VLAN_N_VID) 1599 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1600 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1601 (struct net_if_token *)&l2entry->nit, 1602 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1603 } 1604 1605 /** 1606 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1607 * @card: qeth_card structure pointer. 1608 * @enable: 0 - disable, non-zero - enable notifications 1609 * 1610 * Returns negative errno-compatible error indication or 0 on success. 1611 * 1612 * On enable, emits a series of address notifications udev events for all 1613 * currently registered hosts. 1614 */ 1615 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 1616 { 1617 int rc; 1618 u16 response; 1619 struct ccw_device *ddev; 1620 struct subchannel_id schid; 1621 1622 if (!card) 1623 return -EINVAL; 1624 if (!card->options.sbp.supported_funcs) 1625 return -EOPNOTSUPP; 1626 ddev = CARD_DDEV(card); 1627 ccw_device_get_schid(ddev, &schid); 1628 1629 if (enable) { 1630 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 1631 rc = qdio_pnso_brinfo(schid, 1, &response, 1632 qeth_bridgeport_an_set_cb, card); 1633 } else 1634 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 1635 return qeth_anset_makerc(card, rc, response); 1636 } 1637 1638 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 1639 { 1640 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 1641 card->options.sbp.hostnotification); 1642 } 1643 1644 /* VNIC Characteristics support */ 1645 1646 /* handle VNICC IPA command return codes; convert to error codes */ 1647 static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc) 1648 { 1649 int rc; 1650 1651 switch (ipa_rc) { 1652 case IPA_RC_SUCCESS: 1653 return ipa_rc; 1654 case IPA_RC_L2_UNSUPPORTED_CMD: 1655 case IPA_RC_NOTSUPP: 1656 rc = -EOPNOTSUPP; 1657 break; 1658 case IPA_RC_VNICC_OOSEQ: 1659 rc = -EALREADY; 1660 break; 1661 case IPA_RC_VNICC_VNICBP: 1662 rc = -EBUSY; 1663 break; 1664 case IPA_RC_L2_ADDR_TABLE_FULL: 1665 rc = -ENOSPC; 1666 break; 1667 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 1668 rc = -EACCES; 1669 break; 1670 default: 1671 rc = -EIO; 1672 } 1673 1674 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 1675 return rc; 1676 } 1677 1678 /* generic VNICC request call back control */ 1679 struct _qeth_l2_vnicc_request_cbctl { 1680 struct { 1681 union{ 1682 u32 *sup_cmds; 1683 u32 *timeout; 1684 }; 1685 } result; 1686 }; 1687 1688 /* generic VNICC request call back */ 1689 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 1690 struct qeth_reply *reply, 1691 unsigned long data) 1692 { 1693 struct _qeth_l2_vnicc_request_cbctl *cbctl = 1694 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 1695 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1696 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 1697 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command; 1698 1699 QETH_CARD_TEXT(card, 2, "vniccrcb"); 1700 if (cmd->hdr.return_code) 1701 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code); 1702 /* return results to caller */ 1703 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported; 1704 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled; 1705 1706 if (sub_cmd == IPA_VNICC_QUERY_CMDS) 1707 *cbctl->result.sup_cmds = rep->data.query_cmds.sup_cmds; 1708 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT) 1709 *cbctl->result.timeout = rep->data.getset_timeout.timeout; 1710 1711 return 0; 1712 } 1713 1714 static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card, 1715 u32 vnicc_cmd, 1716 unsigned int data_length) 1717 { 1718 struct qeth_ipacmd_vnicc_hdr *hdr; 1719 struct qeth_cmd_buffer *iob; 1720 1721 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE, 1722 data_length + 1723 offsetof(struct qeth_ipacmd_vnicc, data)); 1724 if (!iob) 1725 return NULL; 1726 1727 hdr = &__ipa_cmd(iob)->data.vnicc.hdr; 1728 hdr->data_length = sizeof(*hdr) + data_length; 1729 hdr->sub_command = vnicc_cmd; 1730 return iob; 1731 } 1732 1733 /* VNICC query VNIC characteristics request */ 1734 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 1735 { 1736 struct qeth_cmd_buffer *iob; 1737 1738 QETH_CARD_TEXT(card, 2, "vniccqch"); 1739 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0); 1740 if (!iob) 1741 return -ENOMEM; 1742 1743 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1744 } 1745 1746 /* VNICC query sub commands request */ 1747 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 1748 u32 *sup_cmds) 1749 { 1750 struct _qeth_l2_vnicc_request_cbctl cbctl; 1751 struct qeth_cmd_buffer *iob; 1752 1753 QETH_CARD_TEXT(card, 2, "vniccqcm"); 1754 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS, 1755 VNICC_DATA_SIZEOF(query_cmds)); 1756 if (!iob) 1757 return -ENOMEM; 1758 1759 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char; 1760 1761 /* prepare callback control */ 1762 cbctl.result.sup_cmds = sup_cmds; 1763 1764 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl); 1765 } 1766 1767 /* VNICC enable/disable characteristic request */ 1768 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 1769 u32 cmd) 1770 { 1771 struct qeth_cmd_buffer *iob; 1772 1773 QETH_CARD_TEXT(card, 2, "vniccedc"); 1774 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char)); 1775 if (!iob) 1776 return -ENOMEM; 1777 1778 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char; 1779 1780 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1781 } 1782 1783 /* VNICC get/set timeout for characteristic request */ 1784 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 1785 u32 cmd, u32 *timeout) 1786 { 1787 struct qeth_vnicc_getset_timeout *getset_timeout; 1788 struct _qeth_l2_vnicc_request_cbctl cbctl; 1789 struct qeth_cmd_buffer *iob; 1790 1791 QETH_CARD_TEXT(card, 2, "vniccgst"); 1792 iob = qeth_l2_vnicc_build_cmd(card, cmd, 1793 VNICC_DATA_SIZEOF(getset_timeout)); 1794 if (!iob) 1795 return -ENOMEM; 1796 1797 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout; 1798 getset_timeout->vnic_char = vnicc; 1799 1800 if (cmd == IPA_VNICC_SET_TIMEOUT) 1801 getset_timeout->timeout = *timeout; 1802 1803 /* prepare callback control */ 1804 if (cmd == IPA_VNICC_GET_TIMEOUT) 1805 cbctl.result.timeout = timeout; 1806 1807 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl); 1808 } 1809 1810 /* set current VNICC flag state; called from sysfs store function */ 1811 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 1812 { 1813 int rc = 0; 1814 u32 cmd; 1815 1816 QETH_CARD_TEXT(card, 2, "vniccsch"); 1817 1818 /* do not change anything if BridgePort is enabled */ 1819 if (qeth_bridgeport_is_in_use(card)) 1820 return -EBUSY; 1821 1822 /* check if characteristic and enable/disable are supported */ 1823 if (!(card->options.vnicc.sup_chars & vnicc) || 1824 !(card->options.vnicc.set_char_sup & vnicc)) 1825 return -EOPNOTSUPP; 1826 1827 /* set enable/disable command and store wanted characteristic */ 1828 if (state) { 1829 cmd = IPA_VNICC_ENABLE; 1830 card->options.vnicc.wanted_chars |= vnicc; 1831 } else { 1832 cmd = IPA_VNICC_DISABLE; 1833 card->options.vnicc.wanted_chars &= ~vnicc; 1834 } 1835 1836 /* do we need to do anything? */ 1837 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 1838 return rc; 1839 1840 /* if card is not ready, simply stop here */ 1841 if (!qeth_card_hw_is_reachable(card)) { 1842 if (state) 1843 card->options.vnicc.cur_chars |= vnicc; 1844 else 1845 card->options.vnicc.cur_chars &= ~vnicc; 1846 return rc; 1847 } 1848 1849 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 1850 if (rc) 1851 card->options.vnicc.wanted_chars = 1852 card->options.vnicc.cur_chars; 1853 else { 1854 /* successful online VNICC change; handle special cases */ 1855 if (state && vnicc == QETH_VNICC_RX_BCAST) 1856 card->options.vnicc.rx_bcast_enabled = true; 1857 if (!state && vnicc == QETH_VNICC_LEARNING) 1858 qeth_l2_vnicc_recover_timeout(card, vnicc, 1859 &card->options.vnicc.learning_timeout); 1860 } 1861 1862 return rc; 1863 } 1864 1865 /* get current VNICC flag state; called from sysfs show function */ 1866 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 1867 { 1868 int rc = 0; 1869 1870 QETH_CARD_TEXT(card, 2, "vniccgch"); 1871 1872 /* do not get anything if BridgePort is enabled */ 1873 if (qeth_bridgeport_is_in_use(card)) 1874 return -EBUSY; 1875 1876 /* check if characteristic is supported */ 1877 if (!(card->options.vnicc.sup_chars & vnicc)) 1878 return -EOPNOTSUPP; 1879 1880 /* if card is ready, query current VNICC state */ 1881 if (qeth_card_hw_is_reachable(card)) 1882 rc = qeth_l2_vnicc_query_chars(card); 1883 1884 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 1885 return rc; 1886 } 1887 1888 /* set VNICC timeout; called from sysfs store function. Currently, only learning 1889 * supports timeout 1890 */ 1891 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 1892 { 1893 int rc = 0; 1894 1895 QETH_CARD_TEXT(card, 2, "vniccsto"); 1896 1897 /* do not change anything if BridgePort is enabled */ 1898 if (qeth_bridgeport_is_in_use(card)) 1899 return -EBUSY; 1900 1901 /* check if characteristic and set_timeout are supported */ 1902 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 1903 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 1904 return -EOPNOTSUPP; 1905 1906 /* do we need to do anything? */ 1907 if (card->options.vnicc.learning_timeout == timeout) 1908 return rc; 1909 1910 /* if card is not ready, simply store the value internally and return */ 1911 if (!qeth_card_hw_is_reachable(card)) { 1912 card->options.vnicc.learning_timeout = timeout; 1913 return rc; 1914 } 1915 1916 /* send timeout value to card; if successful, store value internally */ 1917 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 1918 IPA_VNICC_SET_TIMEOUT, &timeout); 1919 if (!rc) 1920 card->options.vnicc.learning_timeout = timeout; 1921 1922 return rc; 1923 } 1924 1925 /* get current VNICC timeout; called from sysfs show function. Currently, only 1926 * learning supports timeout 1927 */ 1928 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 1929 { 1930 int rc = 0; 1931 1932 QETH_CARD_TEXT(card, 2, "vniccgto"); 1933 1934 /* do not get anything if BridgePort is enabled */ 1935 if (qeth_bridgeport_is_in_use(card)) 1936 return -EBUSY; 1937 1938 /* check if characteristic and get_timeout are supported */ 1939 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 1940 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 1941 return -EOPNOTSUPP; 1942 /* if card is ready, get timeout. Otherwise, just return stored value */ 1943 *timeout = card->options.vnicc.learning_timeout; 1944 if (qeth_card_hw_is_reachable(card)) 1945 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 1946 IPA_VNICC_GET_TIMEOUT, 1947 timeout); 1948 1949 return rc; 1950 } 1951 1952 /* check if VNICC is currently enabled */ 1953 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 1954 { 1955 if (!card->options.vnicc.sup_chars) 1956 return false; 1957 /* default values are only OK if rx_bcast was not enabled by user 1958 * or the card is offline. 1959 */ 1960 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 1961 if (!card->options.vnicc.rx_bcast_enabled || 1962 !qeth_card_hw_is_reachable(card)) 1963 return false; 1964 } 1965 return true; 1966 } 1967 1968 /* recover user timeout setting */ 1969 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 1970 u32 *timeout) 1971 { 1972 if (card->options.vnicc.sup_chars & vnicc && 1973 card->options.vnicc.getset_timeout_sup & vnicc && 1974 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 1975 timeout)) 1976 return false; 1977 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 1978 return true; 1979 } 1980 1981 /* recover user characteristic setting */ 1982 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 1983 bool enable) 1984 { 1985 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 1986 1987 if (card->options.vnicc.sup_chars & vnicc && 1988 card->options.vnicc.set_char_sup & vnicc && 1989 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 1990 return false; 1991 card->options.vnicc.wanted_chars &= ~vnicc; 1992 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 1993 return true; 1994 } 1995 1996 /* (re-)initialize VNICC */ 1997 static void qeth_l2_vnicc_init(struct qeth_card *card) 1998 { 1999 u32 *timeout = &card->options.vnicc.learning_timeout; 2000 bool enable, error = false; 2001 unsigned int chars_len, i; 2002 unsigned long chars_tmp; 2003 u32 sup_cmds, vnicc; 2004 2005 QETH_CARD_TEXT(card, 2, "vniccini"); 2006 /* reset rx_bcast */ 2007 card->options.vnicc.rx_bcast_enabled = 0; 2008 /* initial query and storage of VNIC characteristics */ 2009 if (qeth_l2_vnicc_query_chars(card)) { 2010 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2011 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2012 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2013 /* fail quietly if user didn't change the default config */ 2014 card->options.vnicc.sup_chars = 0; 2015 card->options.vnicc.cur_chars = 0; 2016 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2017 return; 2018 } 2019 /* get supported commands for each supported characteristic */ 2020 chars_tmp = card->options.vnicc.sup_chars; 2021 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2022 for_each_set_bit(i, &chars_tmp, chars_len) { 2023 vnicc = BIT(i); 2024 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) { 2025 sup_cmds = 0; 2026 error = true; 2027 } 2028 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) && 2029 (sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2030 card->options.vnicc.getset_timeout_sup |= vnicc; 2031 else 2032 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2033 if ((sup_cmds & IPA_VNICC_ENABLE) && 2034 (sup_cmds & IPA_VNICC_DISABLE)) 2035 card->options.vnicc.set_char_sup |= vnicc; 2036 else 2037 card->options.vnicc.set_char_sup &= ~vnicc; 2038 } 2039 /* enforce assumed default values and recover settings, if changed */ 2040 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2041 timeout); 2042 /* Change chars, if necessary */ 2043 chars_tmp = card->options.vnicc.wanted_chars ^ 2044 card->options.vnicc.cur_chars; 2045 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2046 for_each_set_bit(i, &chars_tmp, chars_len) { 2047 vnicc = BIT(i); 2048 enable = card->options.vnicc.wanted_chars & vnicc; 2049 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2050 } 2051 if (error) 2052 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2053 } 2054 2055 /* configure default values of VNIC characteristics */ 2056 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2057 { 2058 /* characteristics values */ 2059 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2060 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2061 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2062 /* supported commands */ 2063 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2064 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2065 /* settings wanted by users */ 2066 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2067 } 2068 2069 module_init(qeth_l2_init); 2070 module_exit(qeth_l2_exit); 2071 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2072 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2073 MODULE_LICENSE("GPL"); 2074