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_qdio_clear_card(card, 0); 291 qeth_drain_output_queues(card); 292 qeth_clear_working_pool_list(card); 293 card->state = CARD_STATE_DOWN; 294 } 295 296 flush_workqueue(card->event_wq); 297 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 298 } 299 300 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 301 int budget, int *done) 302 { 303 int work_done = 0; 304 struct sk_buff *skb; 305 struct qeth_hdr *hdr; 306 unsigned int len; 307 308 *done = 0; 309 WARN_ON_ONCE(!budget); 310 while (budget) { 311 skb = qeth_core_get_next_skb(card, 312 &card->qdio.in_q->bufs[card->rx.b_index], 313 &card->rx.b_element, &card->rx.e_offset, &hdr); 314 if (!skb) { 315 *done = 1; 316 break; 317 } 318 switch (hdr->hdr.l2.id) { 319 case QETH_HEADER_TYPE_LAYER2: 320 skb->protocol = eth_type_trans(skb, skb->dev); 321 qeth_rx_csum(card, skb, hdr->hdr.l2.flags[1]); 322 len = skb->len; 323 napi_gro_receive(&card->napi, skb); 324 break; 325 case QETH_HEADER_TYPE_OSN: 326 if (IS_OSN(card)) { 327 skb_push(skb, sizeof(struct qeth_hdr)); 328 skb_copy_to_linear_data(skb, hdr, 329 sizeof(struct qeth_hdr)); 330 len = skb->len; 331 card->osn_info.data_cb(skb); 332 break; 333 } 334 /* Else, fall through */ 335 default: 336 dev_kfree_skb_any(skb); 337 QETH_CARD_TEXT(card, 3, "inbunkno"); 338 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr)); 339 continue; 340 } 341 work_done++; 342 budget--; 343 QETH_CARD_STAT_INC(card, rx_packets); 344 QETH_CARD_STAT_ADD(card, rx_bytes, len); 345 } 346 return work_done; 347 } 348 349 static int qeth_l2_request_initial_mac(struct qeth_card *card) 350 { 351 int rc = 0; 352 353 QETH_CARD_TEXT(card, 2, "l2reqmac"); 354 355 if (MACHINE_IS_VM) { 356 rc = qeth_vm_request_mac(card); 357 if (!rc) 358 goto out; 359 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n", 360 CARD_DEVID(card), rc); 361 QETH_CARD_TEXT_(card, 2, "err%04x", rc); 362 /* fall back to alternative mechanism: */ 363 } 364 365 if (!IS_OSN(card)) { 366 rc = qeth_setadpparms_change_macaddr(card); 367 if (!rc) 368 goto out; 369 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n", 370 CARD_DEVID(card), rc); 371 QETH_CARD_TEXT_(card, 2, "1err%04x", rc); 372 /* fall back once more: */ 373 } 374 375 /* some devices don't support a custom MAC address: */ 376 if (IS_OSM(card) || IS_OSX(card)) 377 return (rc) ? rc : -EADDRNOTAVAIL; 378 eth_hw_addr_random(card->dev); 379 380 out: 381 QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len); 382 return 0; 383 } 384 385 static void qeth_l2_register_dev_addr(struct qeth_card *card) 386 { 387 if (!is_valid_ether_addr(card->dev->dev_addr)) 388 qeth_l2_request_initial_mac(card); 389 390 if (!IS_OSN(card) && !qeth_l2_send_setmac(card, card->dev->dev_addr)) 391 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 392 } 393 394 static int qeth_l2_validate_addr(struct net_device *dev) 395 { 396 struct qeth_card *card = dev->ml_priv; 397 398 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) 399 return eth_validate_addr(dev); 400 401 QETH_CARD_TEXT(card, 4, "nomacadr"); 402 return -EPERM; 403 } 404 405 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 406 { 407 struct sockaddr *addr = p; 408 struct qeth_card *card = dev->ml_priv; 409 u8 old_addr[ETH_ALEN]; 410 int rc = 0; 411 412 QETH_CARD_TEXT(card, 3, "setmac"); 413 414 if (IS_OSM(card) || IS_OSX(card)) { 415 QETH_CARD_TEXT(card, 3, "setmcTYP"); 416 return -EOPNOTSUPP; 417 } 418 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 419 if (!is_valid_ether_addr(addr->sa_data)) 420 return -EADDRNOTAVAIL; 421 422 /* don't register the same address twice */ 423 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) && 424 (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 425 return 0; 426 427 /* add the new address, switch over, drop the old */ 428 rc = qeth_l2_send_setmac(card, addr->sa_data); 429 if (rc) 430 return rc; 431 ether_addr_copy(old_addr, dev->dev_addr); 432 ether_addr_copy(dev->dev_addr, addr->sa_data); 433 434 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) 435 qeth_l2_remove_mac(card, old_addr); 436 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 437 return 0; 438 } 439 440 static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable) 441 { 442 int role; 443 int rc; 444 445 QETH_CARD_TEXT(card, 3, "pmisc2br"); 446 447 if (enable) { 448 if (card->options.sbp.reflect_promisc_primary) 449 role = QETH_SBP_ROLE_PRIMARY; 450 else 451 role = QETH_SBP_ROLE_SECONDARY; 452 } else 453 role = QETH_SBP_ROLE_NONE; 454 455 rc = qeth_bridgeport_setrole(card, role); 456 QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc); 457 if (!rc) { 458 card->options.sbp.role = role; 459 card->info.promisc_mode = enable; 460 } 461 } 462 463 static void qeth_l2_set_promisc_mode(struct qeth_card *card) 464 { 465 bool enable = card->dev->flags & IFF_PROMISC; 466 467 if (card->info.promisc_mode == enable) 468 return; 469 470 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 471 qeth_setadp_promisc_mode(card, enable); 472 else if (card->options.sbp.reflect_promisc) 473 qeth_l2_promisc_to_bridge(card, enable); 474 } 475 476 /* New MAC address is added to the hash table and marked to be written on card 477 * only if there is not in the hash table storage already 478 * 479 */ 480 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 481 { 482 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 483 struct qeth_mac *mac; 484 485 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 486 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 487 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 488 return; 489 } 490 } 491 492 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 493 if (!mac) 494 return; 495 496 ether_addr_copy(mac->mac_addr, ha->addr); 497 mac->disp_flag = QETH_DISP_ADDR_ADD; 498 499 hash_add(card->mac_htable, &mac->hnode, mac_hash); 500 } 501 502 static void qeth_l2_rx_mode_work(struct work_struct *work) 503 { 504 struct qeth_card *card = container_of(work, struct qeth_card, 505 rx_mode_work); 506 struct net_device *dev = card->dev; 507 struct netdev_hw_addr *ha; 508 struct qeth_mac *mac; 509 struct hlist_node *tmp; 510 int i; 511 int rc; 512 513 QETH_CARD_TEXT(card, 3, "setmulti"); 514 515 netif_addr_lock_bh(dev); 516 netdev_for_each_mc_addr(ha, dev) 517 qeth_l2_add_mac(card, ha); 518 netdev_for_each_uc_addr(ha, dev) 519 qeth_l2_add_mac(card, ha); 520 netif_addr_unlock_bh(dev); 521 522 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 523 switch (mac->disp_flag) { 524 case QETH_DISP_ADDR_DELETE: 525 qeth_l2_remove_mac(card, mac->mac_addr); 526 hash_del(&mac->hnode); 527 kfree(mac); 528 break; 529 case QETH_DISP_ADDR_ADD: 530 rc = qeth_l2_write_mac(card, mac->mac_addr); 531 if (rc) { 532 hash_del(&mac->hnode); 533 kfree(mac); 534 break; 535 } 536 /* fall through */ 537 default: 538 /* for next call to set_rx_mode(): */ 539 mac->disp_flag = QETH_DISP_ADDR_DELETE; 540 } 541 } 542 543 qeth_l2_set_promisc_mode(card); 544 } 545 546 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 547 struct qeth_qdio_out_q *queue) 548 { 549 struct qeth_hdr *hdr = (struct qeth_hdr *)skb->data; 550 addr_t end = (addr_t)(skb->data + sizeof(*hdr)); 551 addr_t start = (addr_t)skb->data; 552 unsigned int elements = 0; 553 unsigned int hd_len = 0; 554 int rc; 555 556 if (skb->protocol == htons(ETH_P_IPV6)) 557 return -EPROTONOSUPPORT; 558 559 if (qeth_get_elements_for_range(start, end) > 1) { 560 /* Misaligned HW header, move it to its own buffer element. */ 561 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 562 if (!hdr) 563 return -ENOMEM; 564 hd_len = sizeof(*hdr); 565 skb_copy_from_linear_data(skb, (char *)hdr, hd_len); 566 elements++; 567 } 568 569 elements += qeth_count_elements(skb, hd_len); 570 if (elements > queue->max_elements) { 571 rc = -E2BIG; 572 goto out; 573 } 574 575 rc = qeth_do_send_packet(card, queue, skb, hdr, hd_len, hd_len, 576 elements); 577 out: 578 if (rc && hd_len) 579 kmem_cache_free(qeth_core_header_cache, hdr); 580 return rc; 581 } 582 583 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 584 struct net_device *dev) 585 { 586 struct qeth_card *card = dev->ml_priv; 587 u16 txq = skb_get_queue_mapping(skb); 588 struct qeth_qdio_out_q *queue; 589 int rc; 590 591 if (!skb_is_gso(skb)) 592 qdisc_skb_cb(skb)->pkt_len = skb->len; 593 if (IS_IQD(card)) 594 txq = qeth_iqd_translate_txq(dev, txq); 595 queue = card->qdio.out_qs[txq]; 596 597 if (IS_OSN(card)) 598 rc = qeth_l2_xmit_osn(card, skb, queue); 599 else 600 rc = qeth_xmit(card, skb, queue, qeth_get_ip_version(skb), 601 qeth_l2_fill_header); 602 603 if (!rc) 604 return NETDEV_TX_OK; 605 606 QETH_TXQ_STAT_INC(queue, tx_dropped); 607 kfree_skb(skb); 608 return NETDEV_TX_OK; 609 } 610 611 static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb, 612 struct net_device *sb_dev) 613 { 614 struct qeth_card *card = dev->ml_priv; 615 616 if (IS_IQD(card)) 617 return qeth_iqd_select_queue(dev, skb, 618 qeth_get_ether_cast_type(skb), 619 sb_dev); 620 return qeth_get_priority_queue(card, skb); 621 } 622 623 static const struct device_type qeth_l2_devtype = { 624 .name = "qeth_layer2", 625 .groups = qeth_l2_attr_groups, 626 }; 627 628 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 629 { 630 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 631 int rc; 632 633 qeth_l2_vnicc_set_defaults(card); 634 635 if (gdev->dev.type == &qeth_generic_devtype) { 636 rc = qeth_l2_create_device_attributes(&gdev->dev); 637 if (rc) 638 return rc; 639 } 640 641 hash_init(card->mac_htable); 642 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work); 643 return 0; 644 } 645 646 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 647 { 648 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 649 650 if (cgdev->dev.type == &qeth_generic_devtype) 651 qeth_l2_remove_device_attributes(&cgdev->dev); 652 qeth_set_allowed_threads(card, 0, 1); 653 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 654 655 if (cgdev->state == CCWGROUP_ONLINE) 656 qeth_l2_set_offline(cgdev); 657 658 cancel_work_sync(&card->close_dev_work); 659 if (qeth_netdev_is_registered(card->dev)) 660 unregister_netdev(card->dev); 661 } 662 663 static void qeth_l2_set_rx_mode(struct net_device *dev) 664 { 665 struct qeth_card *card = dev->ml_priv; 666 667 schedule_work(&card->rx_mode_work); 668 } 669 670 static const struct net_device_ops qeth_l2_netdev_ops = { 671 .ndo_open = qeth_open, 672 .ndo_stop = qeth_stop, 673 .ndo_get_stats64 = qeth_get_stats64, 674 .ndo_start_xmit = qeth_l2_hard_start_xmit, 675 .ndo_features_check = qeth_features_check, 676 .ndo_select_queue = qeth_l2_select_queue, 677 .ndo_validate_addr = qeth_l2_validate_addr, 678 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 679 .ndo_do_ioctl = qeth_do_ioctl, 680 .ndo_set_mac_address = qeth_l2_set_mac_address, 681 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 682 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 683 .ndo_tx_timeout = qeth_tx_timeout, 684 .ndo_fix_features = qeth_fix_features, 685 .ndo_set_features = qeth_set_features 686 }; 687 688 static const struct net_device_ops qeth_osn_netdev_ops = { 689 .ndo_open = qeth_open, 690 .ndo_stop = qeth_stop, 691 .ndo_get_stats64 = qeth_get_stats64, 692 .ndo_start_xmit = qeth_l2_hard_start_xmit, 693 .ndo_validate_addr = eth_validate_addr, 694 .ndo_tx_timeout = qeth_tx_timeout, 695 }; 696 697 static int qeth_l2_setup_netdev(struct qeth_card *card, bool carrier_ok) 698 { 699 int rc; 700 701 if (IS_OSN(card)) { 702 card->dev->netdev_ops = &qeth_osn_netdev_ops; 703 card->dev->flags |= IFF_NOARP; 704 goto add_napi; 705 } 706 707 card->dev->needed_headroom = sizeof(struct qeth_hdr); 708 card->dev->netdev_ops = &qeth_l2_netdev_ops; 709 card->dev->priv_flags |= IFF_UNICAST_FLT; 710 711 if (IS_OSM(card)) { 712 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 713 } else { 714 if (!IS_VM_NIC(card)) 715 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 716 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 717 } 718 719 if (IS_OSD(card) && !IS_VM_NIC(card)) { 720 card->dev->features |= NETIF_F_SG; 721 /* OSA 3S and earlier has no RX/TX support */ 722 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 723 card->dev->hw_features |= NETIF_F_IP_CSUM; 724 card->dev->vlan_features |= NETIF_F_IP_CSUM; 725 } 726 } 727 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 728 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 729 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 730 } 731 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) || 732 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) { 733 card->dev->hw_features |= NETIF_F_RXCSUM; 734 card->dev->vlan_features |= NETIF_F_RXCSUM; 735 } 736 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 737 card->dev->hw_features |= NETIF_F_TSO; 738 card->dev->vlan_features |= NETIF_F_TSO; 739 } 740 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 741 card->dev->hw_features |= NETIF_F_TSO6; 742 card->dev->vlan_features |= NETIF_F_TSO6; 743 } 744 745 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) { 746 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso); 747 netif_set_gso_max_size(card->dev, 748 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)); 749 } 750 751 add_napi: 752 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 753 rc = register_netdev(card->dev); 754 if (!rc && carrier_ok) 755 netif_carrier_on(card->dev); 756 757 if (rc) 758 card->dev->netdev_ops = NULL; 759 return rc; 760 } 761 762 static int qeth_l2_start_ipassists(struct qeth_card *card) 763 { 764 /* configure isolation level */ 765 if (qeth_set_access_ctrl_online(card, 0)) 766 return -ENODEV; 767 return 0; 768 } 769 770 static void qeth_l2_trace_features(struct qeth_card *card) 771 { 772 /* Set BridgePort features */ 773 QETH_CARD_TEXT(card, 2, "featuSBP"); 774 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 775 sizeof(card->options.sbp.supported_funcs)); 776 /* VNIC Characteristics features */ 777 QETH_CARD_TEXT(card, 2, "feaVNICC"); 778 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 779 sizeof(card->options.vnicc.sup_chars)); 780 } 781 782 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 783 { 784 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 785 struct net_device *dev = card->dev; 786 int rc = 0; 787 bool carrier_ok; 788 789 mutex_lock(&card->discipline_mutex); 790 mutex_lock(&card->conf_mutex); 791 QETH_CARD_TEXT(card, 2, "setonlin"); 792 793 rc = qeth_core_hardsetup_card(card, &carrier_ok); 794 if (rc) { 795 QETH_CARD_TEXT_(card, 2, "2err%04x", rc); 796 rc = -ENODEV; 797 goto out_remove; 798 } 799 800 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 801 if (card->info.hwtrap && 802 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 803 card->info.hwtrap = 0; 804 } else 805 card->info.hwtrap = 0; 806 807 qeth_bridgeport_query_support(card); 808 if (card->options.sbp.supported_funcs) 809 dev_info(&card->gdev->dev, 810 "The device represents a Bridge Capable Port\n"); 811 812 qeth_l2_register_dev_addr(card); 813 814 /* for the rx_bcast characteristic, init VNICC after setmac */ 815 qeth_l2_vnicc_init(card); 816 817 qeth_trace_features(card); 818 qeth_l2_trace_features(card); 819 820 qeth_l2_setup_bridgeport_attrs(card); 821 822 card->state = CARD_STATE_HARDSETUP; 823 qeth_print_status_message(card); 824 825 /* softsetup */ 826 QETH_CARD_TEXT(card, 2, "softsetp"); 827 828 if (IS_OSD(card) || IS_OSX(card)) { 829 rc = qeth_l2_start_ipassists(card); 830 if (rc) 831 goto out_remove; 832 } 833 834 rc = qeth_init_qdio_queues(card); 835 if (rc) { 836 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 837 rc = -ENODEV; 838 goto out_remove; 839 } 840 card->state = CARD_STATE_SOFTSETUP; 841 842 qeth_set_allowed_threads(card, 0xffffffff, 0); 843 844 if (!qeth_netdev_is_registered(dev)) { 845 rc = qeth_l2_setup_netdev(card, carrier_ok); 846 if (rc) 847 goto out_remove; 848 } else { 849 rtnl_lock(); 850 if (carrier_ok) 851 netif_carrier_on(dev); 852 else 853 netif_carrier_off(dev); 854 855 netif_device_attach(dev); 856 qeth_enable_hw_features(dev); 857 858 if (card->info.open_when_online) { 859 card->info.open_when_online = 0; 860 dev_open(dev, NULL); 861 } 862 rtnl_unlock(); 863 } 864 /* let user_space know that device is online */ 865 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 866 mutex_unlock(&card->conf_mutex); 867 mutex_unlock(&card->discipline_mutex); 868 return 0; 869 870 out_remove: 871 qeth_l2_stop_card(card); 872 ccw_device_set_offline(CARD_DDEV(card)); 873 ccw_device_set_offline(CARD_WDEV(card)); 874 ccw_device_set_offline(CARD_RDEV(card)); 875 qdio_free(CARD_DDEV(card)); 876 877 mutex_unlock(&card->conf_mutex); 878 mutex_unlock(&card->discipline_mutex); 879 return rc; 880 } 881 882 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 883 int recovery_mode) 884 { 885 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 886 int rc = 0, rc2 = 0, rc3 = 0; 887 888 mutex_lock(&card->discipline_mutex); 889 mutex_lock(&card->conf_mutex); 890 QETH_CARD_TEXT(card, 3, "setoffl"); 891 892 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 893 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 894 card->info.hwtrap = 1; 895 } 896 897 rtnl_lock(); 898 card->info.open_when_online = card->dev->flags & IFF_UP; 899 dev_close(card->dev); 900 netif_device_detach(card->dev); 901 netif_carrier_off(card->dev); 902 rtnl_unlock(); 903 904 qeth_l2_stop_card(card); 905 rc = ccw_device_set_offline(CARD_DDEV(card)); 906 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 907 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 908 if (!rc) 909 rc = (rc2) ? rc2 : rc3; 910 if (rc) 911 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 912 qdio_free(CARD_DDEV(card)); 913 914 /* let user_space know that device is offline */ 915 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 916 mutex_unlock(&card->conf_mutex); 917 mutex_unlock(&card->discipline_mutex); 918 return 0; 919 } 920 921 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 922 { 923 return __qeth_l2_set_offline(cgdev, 0); 924 } 925 926 static int qeth_l2_recover(void *ptr) 927 { 928 struct qeth_card *card; 929 int rc = 0; 930 931 card = (struct qeth_card *) ptr; 932 QETH_CARD_TEXT(card, 2, "recover1"); 933 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 934 return 0; 935 QETH_CARD_TEXT(card, 2, "recover2"); 936 dev_warn(&card->gdev->dev, 937 "A recovery process has been started for the device\n"); 938 __qeth_l2_set_offline(card->gdev, 1); 939 rc = qeth_l2_set_online(card->gdev); 940 if (!rc) 941 dev_info(&card->gdev->dev, 942 "Device successfully recovered!\n"); 943 else { 944 ccwgroup_set_offline(card->gdev); 945 dev_warn(&card->gdev->dev, "The qeth device driver " 946 "failed to recover an error on the device\n"); 947 } 948 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 949 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 950 return 0; 951 } 952 953 static int __init qeth_l2_init(void) 954 { 955 pr_info("register layer 2 discipline\n"); 956 return 0; 957 } 958 959 static void __exit qeth_l2_exit(void) 960 { 961 pr_info("unregister layer 2 discipline\n"); 962 } 963 964 /* Returns zero if the command is successfully "consumed" */ 965 static int qeth_l2_control_event(struct qeth_card *card, 966 struct qeth_ipa_cmd *cmd) 967 { 968 switch (cmd->hdr.command) { 969 case IPA_CMD_SETBRIDGEPORT_OSA: 970 case IPA_CMD_SETBRIDGEPORT_IQD: 971 if (cmd->data.sbp.hdr.command_code == 972 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 973 qeth_bridge_state_change(card, cmd); 974 return 0; 975 } else 976 return 1; 977 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 978 qeth_bridge_host_event(card, cmd); 979 return 0; 980 default: 981 return 1; 982 } 983 } 984 985 struct qeth_discipline qeth_l2_discipline = { 986 .devtype = &qeth_l2_devtype, 987 .process_rx_buffer = qeth_l2_process_inbound_buffer, 988 .recover = qeth_l2_recover, 989 .setup = qeth_l2_probe_device, 990 .remove = qeth_l2_remove_device, 991 .set_online = qeth_l2_set_online, 992 .set_offline = qeth_l2_set_offline, 993 .do_ioctl = NULL, 994 .control_event_handler = qeth_l2_control_event, 995 }; 996 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 997 998 static void qeth_osn_assist_cb(struct qeth_card *card, 999 struct qeth_cmd_buffer *iob, 1000 unsigned int data_length) 1001 { 1002 qeth_notify_cmd(iob, 0); 1003 qeth_put_cmd(iob); 1004 } 1005 1006 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1007 { 1008 struct qeth_cmd_buffer *iob; 1009 struct qeth_card *card; 1010 1011 if (data_len < 0) 1012 return -EINVAL; 1013 if (!dev) 1014 return -ENODEV; 1015 card = dev->ml_priv; 1016 if (!card) 1017 return -ENODEV; 1018 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1019 if (!qeth_card_hw_is_reachable(card)) 1020 return -ENODEV; 1021 1022 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_len, 1, 1023 QETH_IPA_TIMEOUT); 1024 if (!iob) 1025 return -ENOMEM; 1026 1027 qeth_prepare_ipa_cmd(card, iob, (u16) data_len); 1028 memcpy(__ipa_cmd(iob), data, data_len); 1029 iob->callback = qeth_osn_assist_cb; 1030 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 1031 } 1032 EXPORT_SYMBOL(qeth_osn_assist); 1033 1034 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1035 int (*assist_cb)(struct net_device *, void *), 1036 int (*data_cb)(struct sk_buff *)) 1037 { 1038 struct qeth_card *card; 1039 char bus_id[16]; 1040 u16 devno; 1041 1042 memcpy(&devno, read_dev_no, 2); 1043 sprintf(bus_id, "0.0.%04x", devno); 1044 card = qeth_get_card_by_busid(bus_id); 1045 if (!card || !IS_OSN(card)) 1046 return -ENODEV; 1047 *dev = card->dev; 1048 1049 QETH_CARD_TEXT(card, 2, "osnreg"); 1050 if ((assist_cb == NULL) || (data_cb == NULL)) 1051 return -EINVAL; 1052 card->osn_info.assist_cb = assist_cb; 1053 card->osn_info.data_cb = data_cb; 1054 return 0; 1055 } 1056 EXPORT_SYMBOL(qeth_osn_register); 1057 1058 void qeth_osn_deregister(struct net_device *dev) 1059 { 1060 struct qeth_card *card; 1061 1062 if (!dev) 1063 return; 1064 card = dev->ml_priv; 1065 if (!card) 1066 return; 1067 QETH_CARD_TEXT(card, 2, "osndereg"); 1068 card->osn_info.assist_cb = NULL; 1069 card->osn_info.data_cb = NULL; 1070 return; 1071 } 1072 EXPORT_SYMBOL(qeth_osn_deregister); 1073 1074 /* SETBRIDGEPORT support, async notifications */ 1075 1076 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1077 1078 /** 1079 * qeth_bridge_emit_host_event() - bridgeport address change notification 1080 * @card: qeth_card structure pointer, for udev events. 1081 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1082 * and reset token and addr_lnid are unused and may be NULL. 1083 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1084 * object, 0 - addition of an object. 1085 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1086 * @token: "network token" structure identifying physical address of the port. 1087 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1088 * 1089 * This function is called when registrations and deregistrations are 1090 * reported by the hardware, and also when notifications are enabled - 1091 * for all currently registered addresses. 1092 */ 1093 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1094 enum qeth_an_event_type evtype, 1095 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1096 { 1097 char str[7][32]; 1098 char *env[8]; 1099 int i = 0; 1100 1101 switch (evtype) { 1102 case anev_reg_unreg: 1103 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1104 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1105 ? "deregister" : "register"); 1106 env[i] = str[i]; i++; 1107 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1108 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1109 addr_lnid->lnid); 1110 env[i] = str[i]; i++; 1111 } 1112 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1113 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1114 addr_lnid->mac); 1115 env[i] = str[i]; i++; 1116 } 1117 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1118 token->cssid, token->ssid, token->devnum); 1119 env[i] = str[i]; i++; 1120 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1121 env[i] = str[i]; i++; 1122 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1123 token->chpid); 1124 env[i] = str[i]; i++; 1125 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1126 env[i] = str[i]; i++; 1127 break; 1128 case anev_abort: 1129 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1130 env[i] = str[i]; i++; 1131 break; 1132 case anev_reset: 1133 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1134 env[i] = str[i]; i++; 1135 break; 1136 } 1137 env[i] = NULL; 1138 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1139 } 1140 1141 struct qeth_bridge_state_data { 1142 struct work_struct worker; 1143 struct qeth_card *card; 1144 struct qeth_sbp_state_change qports; 1145 }; 1146 1147 static void qeth_bridge_state_change_worker(struct work_struct *work) 1148 { 1149 struct qeth_bridge_state_data *data = 1150 container_of(work, struct qeth_bridge_state_data, worker); 1151 /* We are only interested in the first entry - local port */ 1152 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1153 char env_locrem[32]; 1154 char env_role[32]; 1155 char env_state[32]; 1156 char *env[] = { 1157 env_locrem, 1158 env_role, 1159 env_state, 1160 NULL 1161 }; 1162 1163 /* Role should not change by itself, but if it did, */ 1164 /* information from the hardware is authoritative. */ 1165 mutex_lock(&data->card->conf_mutex); 1166 data->card->options.sbp.role = entry->role; 1167 mutex_unlock(&data->card->conf_mutex); 1168 1169 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1170 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1171 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1172 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1173 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1174 "<INVALID>"); 1175 snprintf(env_state, sizeof(env_state), "STATE=%s", 1176 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1177 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1178 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1179 "<INVALID>"); 1180 kobject_uevent_env(&data->card->gdev->dev.kobj, 1181 KOBJ_CHANGE, env); 1182 kfree(data); 1183 } 1184 1185 static void qeth_bridge_state_change(struct qeth_card *card, 1186 struct qeth_ipa_cmd *cmd) 1187 { 1188 struct qeth_sbp_state_change *qports = 1189 &cmd->data.sbp.data.state_change; 1190 struct qeth_bridge_state_data *data; 1191 int extrasize; 1192 1193 QETH_CARD_TEXT(card, 2, "brstchng"); 1194 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1195 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1196 return; 1197 } 1198 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1199 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1200 GFP_ATOMIC); 1201 if (!data) { 1202 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1203 return; 1204 } 1205 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1206 data->card = card; 1207 memcpy(&data->qports, qports, 1208 sizeof(struct qeth_sbp_state_change) + extrasize); 1209 queue_work(card->event_wq, &data->worker); 1210 } 1211 1212 struct qeth_bridge_host_data { 1213 struct work_struct worker; 1214 struct qeth_card *card; 1215 struct qeth_ipacmd_addr_change hostevs; 1216 }; 1217 1218 static void qeth_bridge_host_event_worker(struct work_struct *work) 1219 { 1220 struct qeth_bridge_host_data *data = 1221 container_of(work, struct qeth_bridge_host_data, worker); 1222 int i; 1223 1224 if (data->hostevs.lost_event_mask) { 1225 dev_info(&data->card->gdev->dev, 1226 "Address notification from the Bridge Port stopped %s (%s)\n", 1227 data->card->dev->name, 1228 (data->hostevs.lost_event_mask == 0x01) 1229 ? "Overflow" 1230 : (data->hostevs.lost_event_mask == 0x02) 1231 ? "Bridge port state change" 1232 : "Unknown reason"); 1233 mutex_lock(&data->card->conf_mutex); 1234 data->card->options.sbp.hostnotification = 0; 1235 mutex_unlock(&data->card->conf_mutex); 1236 qeth_bridge_emit_host_event(data->card, anev_abort, 1237 0, NULL, NULL); 1238 } else 1239 for (i = 0; i < data->hostevs.num_entries; i++) { 1240 struct qeth_ipacmd_addr_change_entry *entry = 1241 &data->hostevs.entry[i]; 1242 qeth_bridge_emit_host_event(data->card, 1243 anev_reg_unreg, 1244 entry->change_code, 1245 &entry->token, &entry->addr_lnid); 1246 } 1247 kfree(data); 1248 } 1249 1250 static void qeth_bridge_host_event(struct qeth_card *card, 1251 struct qeth_ipa_cmd *cmd) 1252 { 1253 struct qeth_ipacmd_addr_change *hostevs = 1254 &cmd->data.addrchange; 1255 struct qeth_bridge_host_data *data; 1256 int extrasize; 1257 1258 QETH_CARD_TEXT(card, 2, "brhostev"); 1259 if (cmd->hdr.return_code != 0x0000) { 1260 if (cmd->hdr.return_code == 0x0010) { 1261 if (hostevs->lost_event_mask == 0x00) 1262 hostevs->lost_event_mask = 0xff; 1263 } else { 1264 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1265 cmd->hdr.return_code); 1266 return; 1267 } 1268 } 1269 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1270 hostevs->num_entries; 1271 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1272 GFP_ATOMIC); 1273 if (!data) { 1274 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1275 return; 1276 } 1277 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1278 data->card = card; 1279 memcpy(&data->hostevs, hostevs, 1280 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1281 queue_work(card->event_wq, &data->worker); 1282 } 1283 1284 /* SETBRIDGEPORT support; sending commands */ 1285 1286 struct _qeth_sbp_cbctl { 1287 union { 1288 u32 supported; 1289 struct { 1290 enum qeth_sbp_roles *role; 1291 enum qeth_sbp_states *state; 1292 } qports; 1293 } data; 1294 }; 1295 1296 static int qeth_bridgeport_makerc(struct qeth_card *card, 1297 struct qeth_ipa_cmd *cmd) 1298 { 1299 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp; 1300 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code; 1301 u16 ipa_rc = cmd->hdr.return_code; 1302 u16 sbp_rc = sbp->hdr.return_code; 1303 int rc; 1304 1305 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS) 1306 return 0; 1307 1308 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) || 1309 (!IS_IQD(card) && ipa_rc == sbp_rc)) { 1310 switch (sbp_rc) { 1311 case IPA_RC_SUCCESS: 1312 rc = 0; 1313 break; 1314 case IPA_RC_L2_UNSUPPORTED_CMD: 1315 case IPA_RC_UNSUPPORTED_COMMAND: 1316 rc = -EOPNOTSUPP; 1317 break; 1318 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1319 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1320 rc = -ENODEV; /* maybe not the best code here? */ 1321 dev_err(&card->gdev->dev, 1322 "The device is not configured as a Bridge Port\n"); 1323 break; 1324 case IPA_RC_SBP_OSA_OS_MISMATCH: 1325 case IPA_RC_SBP_IQD_OS_MISMATCH: 1326 rc = -EPERM; 1327 dev_err(&card->gdev->dev, 1328 "A Bridge Port is already configured by a different operating system\n"); 1329 break; 1330 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1331 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1332 switch (setcmd) { 1333 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1334 rc = -EEXIST; 1335 dev_err(&card->gdev->dev, 1336 "The LAN already has a primary Bridge Port\n"); 1337 break; 1338 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1339 rc = -EBUSY; 1340 dev_err(&card->gdev->dev, 1341 "The device is already a primary Bridge Port\n"); 1342 break; 1343 default: 1344 rc = -EIO; 1345 } 1346 break; 1347 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1348 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1349 rc = -EBUSY; 1350 dev_err(&card->gdev->dev, 1351 "The device is already a secondary Bridge Port\n"); 1352 break; 1353 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1354 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1355 rc = -EEXIST; 1356 dev_err(&card->gdev->dev, 1357 "The LAN cannot have more secondary Bridge Ports\n"); 1358 break; 1359 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1360 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1361 rc = -EBUSY; 1362 dev_err(&card->gdev->dev, 1363 "The device is already a primary Bridge Port\n"); 1364 break; 1365 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1366 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1367 rc = -EACCES; 1368 dev_err(&card->gdev->dev, 1369 "The device is not authorized to be a Bridge Port\n"); 1370 break; 1371 default: 1372 rc = -EIO; 1373 } 1374 } else { 1375 switch (ipa_rc) { 1376 case IPA_RC_NOTSUPP: 1377 rc = -EOPNOTSUPP; 1378 break; 1379 case IPA_RC_UNSUPPORTED_COMMAND: 1380 rc = -EOPNOTSUPP; 1381 break; 1382 default: 1383 rc = -EIO; 1384 } 1385 } 1386 1387 if (rc) { 1388 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc); 1389 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc); 1390 } 1391 return rc; 1392 } 1393 1394 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1395 enum qeth_ipa_sbp_cmd sbp_cmd, 1396 unsigned int data_length) 1397 { 1398 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD : 1399 IPA_CMD_SETBRIDGEPORT_OSA; 1400 struct qeth_ipacmd_sbp_hdr *hdr; 1401 struct qeth_cmd_buffer *iob; 1402 1403 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE, 1404 data_length + 1405 offsetof(struct qeth_ipacmd_setbridgeport, 1406 data)); 1407 if (!iob) 1408 return iob; 1409 1410 hdr = &__ipa_cmd(iob)->data.sbp.hdr; 1411 hdr->cmdlength = sizeof(*hdr) + data_length; 1412 hdr->command_code = sbp_cmd; 1413 hdr->used_total = 1; 1414 hdr->seq_no = 1; 1415 return iob; 1416 } 1417 1418 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1419 struct qeth_reply *reply, unsigned long data) 1420 { 1421 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1422 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1423 int rc; 1424 1425 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1426 rc = qeth_bridgeport_makerc(card, cmd); 1427 if (rc) 1428 return rc; 1429 1430 cbctl->data.supported = 1431 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1432 return 0; 1433 } 1434 1435 /** 1436 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1437 * @card: qeth_card structure pointer. 1438 * 1439 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1440 * strucutre: card->options.sbp.supported_funcs. 1441 */ 1442 static void qeth_bridgeport_query_support(struct qeth_card *card) 1443 { 1444 struct qeth_cmd_buffer *iob; 1445 struct _qeth_sbp_cbctl cbctl; 1446 1447 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1448 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1449 SBP_DATA_SIZEOF(query_cmds_supp)); 1450 if (!iob) 1451 return; 1452 1453 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1454 &cbctl)) { 1455 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1456 card->options.sbp.supported_funcs = 0; 1457 return; 1458 } 1459 card->options.sbp.supported_funcs = cbctl.data.supported; 1460 } 1461 1462 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1463 struct qeth_reply *reply, unsigned long data) 1464 { 1465 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1466 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1467 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1468 int rc; 1469 1470 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1471 rc = qeth_bridgeport_makerc(card, cmd); 1472 if (rc) 1473 return rc; 1474 1475 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1476 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1477 return -EINVAL; 1478 } 1479 /* first entry contains the state of the local port */ 1480 if (qports->num_entries > 0) { 1481 if (cbctl->data.qports.role) 1482 *cbctl->data.qports.role = qports->entry[0].role; 1483 if (cbctl->data.qports.state) 1484 *cbctl->data.qports.state = qports->entry[0].state; 1485 } 1486 return 0; 1487 } 1488 1489 /** 1490 * qeth_bridgeport_query_ports() - query local bridgeport status. 1491 * @card: qeth_card structure pointer. 1492 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1493 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1494 * 1495 * Returns negative errno-compatible error indication or 0 on success. 1496 * 1497 * 'role' and 'state' are not updated in case of hardware operation failure. 1498 */ 1499 int qeth_bridgeport_query_ports(struct qeth_card *card, 1500 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1501 { 1502 struct qeth_cmd_buffer *iob; 1503 struct _qeth_sbp_cbctl cbctl = { 1504 .data = { 1505 .qports = { 1506 .role = role, 1507 .state = state, 1508 }, 1509 }, 1510 }; 1511 1512 QETH_CARD_TEXT(card, 2, "brqports"); 1513 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1514 return -EOPNOTSUPP; 1515 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1516 if (!iob) 1517 return -ENOMEM; 1518 1519 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1520 &cbctl); 1521 } 1522 1523 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1524 struct qeth_reply *reply, unsigned long data) 1525 { 1526 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1527 1528 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1529 return qeth_bridgeport_makerc(card, cmd); 1530 } 1531 1532 /** 1533 * qeth_bridgeport_setrole() - Assign primary role to the port. 1534 * @card: qeth_card structure pointer. 1535 * @role: Role to assign. 1536 * 1537 * Returns negative errno-compatible error indication or 0 on success. 1538 */ 1539 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1540 { 1541 struct qeth_cmd_buffer *iob; 1542 enum qeth_ipa_sbp_cmd setcmd; 1543 unsigned int cmdlength = 0; 1544 1545 QETH_CARD_TEXT(card, 2, "brsetrol"); 1546 switch (role) { 1547 case QETH_SBP_ROLE_NONE: 1548 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1549 break; 1550 case QETH_SBP_ROLE_PRIMARY: 1551 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1552 cmdlength = SBP_DATA_SIZEOF(set_primary); 1553 break; 1554 case QETH_SBP_ROLE_SECONDARY: 1555 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1556 break; 1557 default: 1558 return -EINVAL; 1559 } 1560 if (!(card->options.sbp.supported_funcs & setcmd)) 1561 return -EOPNOTSUPP; 1562 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1563 if (!iob) 1564 return -ENOMEM; 1565 1566 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL); 1567 } 1568 1569 /** 1570 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1571 * @card: qeth_card structure pointer, for debug messages. 1572 * 1573 * Returns negative errno-compatible error indication or 0 on success. 1574 */ 1575 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1576 { 1577 int rc; 1578 1579 if (pnso_rc == 0) 1580 switch (response) { 1581 case 0x0001: 1582 rc = 0; 1583 break; 1584 case 0x0004: 1585 case 0x0100: 1586 case 0x0106: 1587 rc = -EOPNOTSUPP; 1588 dev_err(&card->gdev->dev, 1589 "Setting address notification failed\n"); 1590 break; 1591 case 0x0107: 1592 rc = -EAGAIN; 1593 break; 1594 default: 1595 rc = -EIO; 1596 } 1597 else 1598 rc = -EIO; 1599 1600 if (rc) { 1601 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1602 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1603 } 1604 return rc; 1605 } 1606 1607 static void qeth_bridgeport_an_set_cb(void *priv, 1608 enum qdio_brinfo_entry_type type, void *entry) 1609 { 1610 struct qeth_card *card = (struct qeth_card *)priv; 1611 struct qdio_brinfo_entry_l2 *l2entry; 1612 u8 code; 1613 1614 if (type != l2_addr_lnid) { 1615 WARN_ON_ONCE(1); 1616 return; 1617 } 1618 1619 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1620 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1621 if (l2entry->addr_lnid.lnid < VLAN_N_VID) 1622 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1623 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1624 (struct net_if_token *)&l2entry->nit, 1625 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1626 } 1627 1628 /** 1629 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1630 * @card: qeth_card structure pointer. 1631 * @enable: 0 - disable, non-zero - enable notifications 1632 * 1633 * Returns negative errno-compatible error indication or 0 on success. 1634 * 1635 * On enable, emits a series of address notifications udev events for all 1636 * currently registered hosts. 1637 */ 1638 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 1639 { 1640 int rc; 1641 u16 response; 1642 struct ccw_device *ddev; 1643 struct subchannel_id schid; 1644 1645 if (!card) 1646 return -EINVAL; 1647 if (!card->options.sbp.supported_funcs) 1648 return -EOPNOTSUPP; 1649 ddev = CARD_DDEV(card); 1650 ccw_device_get_schid(ddev, &schid); 1651 1652 if (enable) { 1653 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 1654 rc = qdio_pnso_brinfo(schid, 1, &response, 1655 qeth_bridgeport_an_set_cb, card); 1656 } else 1657 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 1658 return qeth_anset_makerc(card, rc, response); 1659 } 1660 1661 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 1662 { 1663 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 1664 card->options.sbp.hostnotification); 1665 } 1666 1667 /* VNIC Characteristics support */ 1668 1669 /* handle VNICC IPA command return codes; convert to error codes */ 1670 static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc) 1671 { 1672 int rc; 1673 1674 switch (ipa_rc) { 1675 case IPA_RC_SUCCESS: 1676 return ipa_rc; 1677 case IPA_RC_L2_UNSUPPORTED_CMD: 1678 case IPA_RC_NOTSUPP: 1679 rc = -EOPNOTSUPP; 1680 break; 1681 case IPA_RC_VNICC_OOSEQ: 1682 rc = -EALREADY; 1683 break; 1684 case IPA_RC_VNICC_VNICBP: 1685 rc = -EBUSY; 1686 break; 1687 case IPA_RC_L2_ADDR_TABLE_FULL: 1688 rc = -ENOSPC; 1689 break; 1690 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 1691 rc = -EACCES; 1692 break; 1693 default: 1694 rc = -EIO; 1695 } 1696 1697 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 1698 return rc; 1699 } 1700 1701 /* generic VNICC request call back control */ 1702 struct _qeth_l2_vnicc_request_cbctl { 1703 struct { 1704 union{ 1705 u32 *sup_cmds; 1706 u32 *timeout; 1707 }; 1708 } result; 1709 }; 1710 1711 /* generic VNICC request call back */ 1712 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 1713 struct qeth_reply *reply, 1714 unsigned long data) 1715 { 1716 struct _qeth_l2_vnicc_request_cbctl *cbctl = 1717 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 1718 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1719 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 1720 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command; 1721 1722 QETH_CARD_TEXT(card, 2, "vniccrcb"); 1723 if (cmd->hdr.return_code) 1724 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code); 1725 /* return results to caller */ 1726 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported; 1727 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled; 1728 1729 if (sub_cmd == IPA_VNICC_QUERY_CMDS) 1730 *cbctl->result.sup_cmds = rep->data.query_cmds.sup_cmds; 1731 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT) 1732 *cbctl->result.timeout = rep->data.getset_timeout.timeout; 1733 1734 return 0; 1735 } 1736 1737 static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card, 1738 u32 vnicc_cmd, 1739 unsigned int data_length) 1740 { 1741 struct qeth_ipacmd_vnicc_hdr *hdr; 1742 struct qeth_cmd_buffer *iob; 1743 1744 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE, 1745 data_length + 1746 offsetof(struct qeth_ipacmd_vnicc, data)); 1747 if (!iob) 1748 return NULL; 1749 1750 hdr = &__ipa_cmd(iob)->data.vnicc.hdr; 1751 hdr->data_length = sizeof(*hdr) + data_length; 1752 hdr->sub_command = vnicc_cmd; 1753 return iob; 1754 } 1755 1756 /* VNICC query VNIC characteristics request */ 1757 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 1758 { 1759 struct qeth_cmd_buffer *iob; 1760 1761 QETH_CARD_TEXT(card, 2, "vniccqch"); 1762 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0); 1763 if (!iob) 1764 return -ENOMEM; 1765 1766 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1767 } 1768 1769 /* VNICC query sub commands request */ 1770 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 1771 u32 *sup_cmds) 1772 { 1773 struct _qeth_l2_vnicc_request_cbctl cbctl; 1774 struct qeth_cmd_buffer *iob; 1775 1776 QETH_CARD_TEXT(card, 2, "vniccqcm"); 1777 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS, 1778 VNICC_DATA_SIZEOF(query_cmds)); 1779 if (!iob) 1780 return -ENOMEM; 1781 1782 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char; 1783 1784 /* prepare callback control */ 1785 cbctl.result.sup_cmds = sup_cmds; 1786 1787 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl); 1788 } 1789 1790 /* VNICC enable/disable characteristic request */ 1791 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 1792 u32 cmd) 1793 { 1794 struct qeth_cmd_buffer *iob; 1795 1796 QETH_CARD_TEXT(card, 2, "vniccedc"); 1797 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char)); 1798 if (!iob) 1799 return -ENOMEM; 1800 1801 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char; 1802 1803 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1804 } 1805 1806 /* VNICC get/set timeout for characteristic request */ 1807 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 1808 u32 cmd, u32 *timeout) 1809 { 1810 struct qeth_vnicc_getset_timeout *getset_timeout; 1811 struct _qeth_l2_vnicc_request_cbctl cbctl; 1812 struct qeth_cmd_buffer *iob; 1813 1814 QETH_CARD_TEXT(card, 2, "vniccgst"); 1815 iob = qeth_l2_vnicc_build_cmd(card, cmd, 1816 VNICC_DATA_SIZEOF(getset_timeout)); 1817 if (!iob) 1818 return -ENOMEM; 1819 1820 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout; 1821 getset_timeout->vnic_char = vnicc; 1822 1823 if (cmd == IPA_VNICC_SET_TIMEOUT) 1824 getset_timeout->timeout = *timeout; 1825 1826 /* prepare callback control */ 1827 if (cmd == IPA_VNICC_GET_TIMEOUT) 1828 cbctl.result.timeout = timeout; 1829 1830 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl); 1831 } 1832 1833 /* set current VNICC flag state; called from sysfs store function */ 1834 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 1835 { 1836 int rc = 0; 1837 u32 cmd; 1838 1839 QETH_CARD_TEXT(card, 2, "vniccsch"); 1840 1841 /* do not change anything if BridgePort is enabled */ 1842 if (qeth_bridgeport_is_in_use(card)) 1843 return -EBUSY; 1844 1845 /* check if characteristic and enable/disable are supported */ 1846 if (!(card->options.vnicc.sup_chars & vnicc) || 1847 !(card->options.vnicc.set_char_sup & vnicc)) 1848 return -EOPNOTSUPP; 1849 1850 /* set enable/disable command and store wanted characteristic */ 1851 if (state) { 1852 cmd = IPA_VNICC_ENABLE; 1853 card->options.vnicc.wanted_chars |= vnicc; 1854 } else { 1855 cmd = IPA_VNICC_DISABLE; 1856 card->options.vnicc.wanted_chars &= ~vnicc; 1857 } 1858 1859 /* do we need to do anything? */ 1860 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 1861 return rc; 1862 1863 /* if card is not ready, simply stop here */ 1864 if (!qeth_card_hw_is_reachable(card)) { 1865 if (state) 1866 card->options.vnicc.cur_chars |= vnicc; 1867 else 1868 card->options.vnicc.cur_chars &= ~vnicc; 1869 return rc; 1870 } 1871 1872 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 1873 if (rc) 1874 card->options.vnicc.wanted_chars = 1875 card->options.vnicc.cur_chars; 1876 else { 1877 /* successful online VNICC change; handle special cases */ 1878 if (state && vnicc == QETH_VNICC_RX_BCAST) 1879 card->options.vnicc.rx_bcast_enabled = true; 1880 if (!state && vnicc == QETH_VNICC_LEARNING) 1881 qeth_l2_vnicc_recover_timeout(card, vnicc, 1882 &card->options.vnicc.learning_timeout); 1883 } 1884 1885 return rc; 1886 } 1887 1888 /* get current VNICC flag state; called from sysfs show function */ 1889 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 1890 { 1891 int rc = 0; 1892 1893 QETH_CARD_TEXT(card, 2, "vniccgch"); 1894 1895 /* do not get anything if BridgePort is enabled */ 1896 if (qeth_bridgeport_is_in_use(card)) 1897 return -EBUSY; 1898 1899 /* check if characteristic is supported */ 1900 if (!(card->options.vnicc.sup_chars & vnicc)) 1901 return -EOPNOTSUPP; 1902 1903 /* if card is ready, query current VNICC state */ 1904 if (qeth_card_hw_is_reachable(card)) 1905 rc = qeth_l2_vnicc_query_chars(card); 1906 1907 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 1908 return rc; 1909 } 1910 1911 /* set VNICC timeout; called from sysfs store function. Currently, only learning 1912 * supports timeout 1913 */ 1914 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 1915 { 1916 int rc = 0; 1917 1918 QETH_CARD_TEXT(card, 2, "vniccsto"); 1919 1920 /* do not change anything if BridgePort is enabled */ 1921 if (qeth_bridgeport_is_in_use(card)) 1922 return -EBUSY; 1923 1924 /* check if characteristic and set_timeout are supported */ 1925 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 1926 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 1927 return -EOPNOTSUPP; 1928 1929 /* do we need to do anything? */ 1930 if (card->options.vnicc.learning_timeout == timeout) 1931 return rc; 1932 1933 /* if card is not ready, simply store the value internally and return */ 1934 if (!qeth_card_hw_is_reachable(card)) { 1935 card->options.vnicc.learning_timeout = timeout; 1936 return rc; 1937 } 1938 1939 /* send timeout value to card; if successful, store value internally */ 1940 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 1941 IPA_VNICC_SET_TIMEOUT, &timeout); 1942 if (!rc) 1943 card->options.vnicc.learning_timeout = timeout; 1944 1945 return rc; 1946 } 1947 1948 /* get current VNICC timeout; called from sysfs show function. Currently, only 1949 * learning supports timeout 1950 */ 1951 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 1952 { 1953 int rc = 0; 1954 1955 QETH_CARD_TEXT(card, 2, "vniccgto"); 1956 1957 /* do not get anything if BridgePort is enabled */ 1958 if (qeth_bridgeport_is_in_use(card)) 1959 return -EBUSY; 1960 1961 /* check if characteristic and get_timeout are supported */ 1962 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 1963 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 1964 return -EOPNOTSUPP; 1965 /* if card is ready, get timeout. Otherwise, just return stored value */ 1966 *timeout = card->options.vnicc.learning_timeout; 1967 if (qeth_card_hw_is_reachable(card)) 1968 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 1969 IPA_VNICC_GET_TIMEOUT, 1970 timeout); 1971 1972 return rc; 1973 } 1974 1975 /* check if VNICC is currently enabled */ 1976 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 1977 { 1978 /* if everything is turned off, VNICC is not active */ 1979 if (!card->options.vnicc.cur_chars) 1980 return false; 1981 /* default values are only OK if rx_bcast was not enabled by user 1982 * or the card is offline. 1983 */ 1984 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 1985 if (!card->options.vnicc.rx_bcast_enabled || 1986 !qeth_card_hw_is_reachable(card)) 1987 return false; 1988 } 1989 return true; 1990 } 1991 1992 /* recover user timeout setting */ 1993 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 1994 u32 *timeout) 1995 { 1996 if (card->options.vnicc.sup_chars & vnicc && 1997 card->options.vnicc.getset_timeout_sup & vnicc && 1998 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 1999 timeout)) 2000 return false; 2001 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2002 return true; 2003 } 2004 2005 /* recover user characteristic setting */ 2006 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2007 bool enable) 2008 { 2009 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2010 2011 if (card->options.vnicc.sup_chars & vnicc && 2012 card->options.vnicc.set_char_sup & vnicc && 2013 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2014 return false; 2015 card->options.vnicc.wanted_chars &= ~vnicc; 2016 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2017 return true; 2018 } 2019 2020 /* (re-)initialize VNICC */ 2021 static void qeth_l2_vnicc_init(struct qeth_card *card) 2022 { 2023 u32 *timeout = &card->options.vnicc.learning_timeout; 2024 unsigned int chars_len, i; 2025 unsigned long chars_tmp; 2026 u32 sup_cmds, vnicc; 2027 bool enable, error; 2028 2029 QETH_CARD_TEXT(card, 2, "vniccini"); 2030 /* reset rx_bcast */ 2031 card->options.vnicc.rx_bcast_enabled = 0; 2032 /* initial query and storage of VNIC characteristics */ 2033 if (qeth_l2_vnicc_query_chars(card)) { 2034 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2035 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2036 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2037 /* fail quietly if user didn't change the default config */ 2038 card->options.vnicc.sup_chars = 0; 2039 card->options.vnicc.cur_chars = 0; 2040 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2041 return; 2042 } 2043 /* get supported commands for each supported characteristic */ 2044 chars_tmp = card->options.vnicc.sup_chars; 2045 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2046 for_each_set_bit(i, &chars_tmp, chars_len) { 2047 vnicc = BIT(i); 2048 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds); 2049 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) || 2050 !(sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2051 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2052 if (!(sup_cmds & IPA_VNICC_ENABLE) || 2053 !(sup_cmds & IPA_VNICC_DISABLE)) 2054 card->options.vnicc.set_char_sup &= ~vnicc; 2055 } 2056 /* enforce assumed default values and recover settings, if changed */ 2057 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2058 timeout); 2059 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; 2060 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; 2061 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2062 for_each_set_bit(i, &chars_tmp, chars_len) { 2063 vnicc = BIT(i); 2064 enable = card->options.vnicc.wanted_chars & vnicc; 2065 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2066 } 2067 if (error) 2068 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2069 } 2070 2071 /* configure default values of VNIC characteristics */ 2072 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2073 { 2074 /* characteristics values */ 2075 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2076 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2077 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2078 /* supported commands */ 2079 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2080 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2081 /* settings wanted by users */ 2082 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2083 } 2084 2085 module_init(qeth_l2_init); 2086 module_exit(qeth_l2_exit); 2087 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2088 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2089 MODULE_LICENSE("GPL"); 2090