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 void qeth_l2_trace_features(struct qeth_card *card) 763 { 764 /* Set BridgePort features */ 765 QETH_CARD_TEXT(card, 2, "featuSBP"); 766 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 767 sizeof(card->options.sbp.supported_funcs)); 768 /* VNIC Characteristics features */ 769 QETH_CARD_TEXT(card, 2, "feaVNICC"); 770 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 771 sizeof(card->options.vnicc.sup_chars)); 772 } 773 774 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 775 { 776 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 777 struct net_device *dev = card->dev; 778 int rc = 0; 779 bool carrier_ok; 780 781 mutex_lock(&card->discipline_mutex); 782 mutex_lock(&card->conf_mutex); 783 QETH_CARD_TEXT(card, 2, "setonlin"); 784 785 rc = qeth_core_hardsetup_card(card, &carrier_ok); 786 if (rc) { 787 QETH_CARD_TEXT_(card, 2, "2err%04x", rc); 788 rc = -ENODEV; 789 goto out_remove; 790 } 791 792 qeth_bridgeport_query_support(card); 793 if (card->options.sbp.supported_funcs) 794 dev_info(&card->gdev->dev, 795 "The device represents a Bridge Capable Port\n"); 796 797 qeth_l2_register_dev_addr(card); 798 799 /* for the rx_bcast characteristic, init VNICC after setmac */ 800 qeth_l2_vnicc_init(card); 801 802 qeth_trace_features(card); 803 qeth_l2_trace_features(card); 804 805 qeth_l2_setup_bridgeport_attrs(card); 806 807 card->state = CARD_STATE_HARDSETUP; 808 qeth_print_status_message(card); 809 810 /* softsetup */ 811 QETH_CARD_TEXT(card, 2, "softsetp"); 812 813 rc = qeth_init_qdio_queues(card); 814 if (rc) { 815 QETH_CARD_TEXT_(card, 2, "6err%d", rc); 816 rc = -ENODEV; 817 goto out_remove; 818 } 819 card->state = CARD_STATE_SOFTSETUP; 820 821 qeth_set_allowed_threads(card, 0xffffffff, 0); 822 823 if (!qeth_netdev_is_registered(dev)) { 824 rc = qeth_l2_setup_netdev(card, carrier_ok); 825 if (rc) 826 goto out_remove; 827 } else { 828 rtnl_lock(); 829 if (carrier_ok) 830 netif_carrier_on(dev); 831 else 832 netif_carrier_off(dev); 833 834 netif_device_attach(dev); 835 qeth_enable_hw_features(dev); 836 837 if (card->info.open_when_online) { 838 card->info.open_when_online = 0; 839 dev_open(dev, NULL); 840 } 841 rtnl_unlock(); 842 } 843 /* let user_space know that device is online */ 844 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 845 mutex_unlock(&card->conf_mutex); 846 mutex_unlock(&card->discipline_mutex); 847 return 0; 848 849 out_remove: 850 qeth_l2_stop_card(card); 851 ccw_device_set_offline(CARD_DDEV(card)); 852 ccw_device_set_offline(CARD_WDEV(card)); 853 ccw_device_set_offline(CARD_RDEV(card)); 854 qdio_free(CARD_DDEV(card)); 855 856 mutex_unlock(&card->conf_mutex); 857 mutex_unlock(&card->discipline_mutex); 858 return rc; 859 } 860 861 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 862 int recovery_mode) 863 { 864 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 865 int rc = 0, rc2 = 0, rc3 = 0; 866 867 mutex_lock(&card->discipline_mutex); 868 mutex_lock(&card->conf_mutex); 869 QETH_CARD_TEXT(card, 3, "setoffl"); 870 871 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 872 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 873 card->info.hwtrap = 1; 874 } 875 876 rtnl_lock(); 877 card->info.open_when_online = card->dev->flags & IFF_UP; 878 dev_close(card->dev); 879 netif_device_detach(card->dev); 880 netif_carrier_off(card->dev); 881 rtnl_unlock(); 882 883 qeth_l2_stop_card(card); 884 rc = ccw_device_set_offline(CARD_DDEV(card)); 885 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 886 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 887 if (!rc) 888 rc = (rc2) ? rc2 : rc3; 889 if (rc) 890 QETH_CARD_TEXT_(card, 2, "1err%d", rc); 891 qdio_free(CARD_DDEV(card)); 892 893 /* let user_space know that device is offline */ 894 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 895 mutex_unlock(&card->conf_mutex); 896 mutex_unlock(&card->discipline_mutex); 897 return 0; 898 } 899 900 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 901 { 902 return __qeth_l2_set_offline(cgdev, 0); 903 } 904 905 static int qeth_l2_recover(void *ptr) 906 { 907 struct qeth_card *card; 908 int rc = 0; 909 910 card = (struct qeth_card *) ptr; 911 QETH_CARD_TEXT(card, 2, "recover1"); 912 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 913 return 0; 914 QETH_CARD_TEXT(card, 2, "recover2"); 915 dev_warn(&card->gdev->dev, 916 "A recovery process has been started for the device\n"); 917 __qeth_l2_set_offline(card->gdev, 1); 918 rc = qeth_l2_set_online(card->gdev); 919 if (!rc) 920 dev_info(&card->gdev->dev, 921 "Device successfully recovered!\n"); 922 else { 923 ccwgroup_set_offline(card->gdev); 924 dev_warn(&card->gdev->dev, "The qeth device driver " 925 "failed to recover an error on the device\n"); 926 } 927 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 928 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 929 return 0; 930 } 931 932 static int __init qeth_l2_init(void) 933 { 934 pr_info("register layer 2 discipline\n"); 935 return 0; 936 } 937 938 static void __exit qeth_l2_exit(void) 939 { 940 pr_info("unregister layer 2 discipline\n"); 941 } 942 943 /* Returns zero if the command is successfully "consumed" */ 944 static int qeth_l2_control_event(struct qeth_card *card, 945 struct qeth_ipa_cmd *cmd) 946 { 947 switch (cmd->hdr.command) { 948 case IPA_CMD_SETBRIDGEPORT_OSA: 949 case IPA_CMD_SETBRIDGEPORT_IQD: 950 if (cmd->data.sbp.hdr.command_code == 951 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 952 qeth_bridge_state_change(card, cmd); 953 return 0; 954 } else 955 return 1; 956 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 957 qeth_bridge_host_event(card, cmd); 958 return 0; 959 default: 960 return 1; 961 } 962 } 963 964 struct qeth_discipline qeth_l2_discipline = { 965 .devtype = &qeth_l2_devtype, 966 .process_rx_buffer = qeth_l2_process_inbound_buffer, 967 .recover = qeth_l2_recover, 968 .setup = qeth_l2_probe_device, 969 .remove = qeth_l2_remove_device, 970 .set_online = qeth_l2_set_online, 971 .set_offline = qeth_l2_set_offline, 972 .do_ioctl = NULL, 973 .control_event_handler = qeth_l2_control_event, 974 }; 975 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 976 977 static void qeth_osn_assist_cb(struct qeth_card *card, 978 struct qeth_cmd_buffer *iob, 979 unsigned int data_length) 980 { 981 qeth_notify_cmd(iob, 0); 982 qeth_put_cmd(iob); 983 } 984 985 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 986 { 987 struct qeth_cmd_buffer *iob; 988 struct qeth_card *card; 989 990 if (data_len < 0) 991 return -EINVAL; 992 if (!dev) 993 return -ENODEV; 994 card = dev->ml_priv; 995 if (!card) 996 return -ENODEV; 997 QETH_CARD_TEXT(card, 2, "osnsdmc"); 998 if (!qeth_card_hw_is_reachable(card)) 999 return -ENODEV; 1000 1001 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_len, 1, 1002 QETH_IPA_TIMEOUT); 1003 if (!iob) 1004 return -ENOMEM; 1005 1006 qeth_prepare_ipa_cmd(card, iob, (u16) data_len); 1007 memcpy(__ipa_cmd(iob), data, data_len); 1008 iob->callback = qeth_osn_assist_cb; 1009 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 1010 } 1011 EXPORT_SYMBOL(qeth_osn_assist); 1012 1013 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1014 int (*assist_cb)(struct net_device *, void *), 1015 int (*data_cb)(struct sk_buff *)) 1016 { 1017 struct qeth_card *card; 1018 char bus_id[16]; 1019 u16 devno; 1020 1021 memcpy(&devno, read_dev_no, 2); 1022 sprintf(bus_id, "0.0.%04x", devno); 1023 card = qeth_get_card_by_busid(bus_id); 1024 if (!card || !IS_OSN(card)) 1025 return -ENODEV; 1026 *dev = card->dev; 1027 1028 QETH_CARD_TEXT(card, 2, "osnreg"); 1029 if ((assist_cb == NULL) || (data_cb == NULL)) 1030 return -EINVAL; 1031 card->osn_info.assist_cb = assist_cb; 1032 card->osn_info.data_cb = data_cb; 1033 return 0; 1034 } 1035 EXPORT_SYMBOL(qeth_osn_register); 1036 1037 void qeth_osn_deregister(struct net_device *dev) 1038 { 1039 struct qeth_card *card; 1040 1041 if (!dev) 1042 return; 1043 card = dev->ml_priv; 1044 if (!card) 1045 return; 1046 QETH_CARD_TEXT(card, 2, "osndereg"); 1047 card->osn_info.assist_cb = NULL; 1048 card->osn_info.data_cb = NULL; 1049 return; 1050 } 1051 EXPORT_SYMBOL(qeth_osn_deregister); 1052 1053 /* SETBRIDGEPORT support, async notifications */ 1054 1055 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1056 1057 /** 1058 * qeth_bridge_emit_host_event() - bridgeport address change notification 1059 * @card: qeth_card structure pointer, for udev events. 1060 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1061 * and reset token and addr_lnid are unused and may be NULL. 1062 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1063 * object, 0 - addition of an object. 1064 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1065 * @token: "network token" structure identifying physical address of the port. 1066 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1067 * 1068 * This function is called when registrations and deregistrations are 1069 * reported by the hardware, and also when notifications are enabled - 1070 * for all currently registered addresses. 1071 */ 1072 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1073 enum qeth_an_event_type evtype, 1074 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1075 { 1076 char str[7][32]; 1077 char *env[8]; 1078 int i = 0; 1079 1080 switch (evtype) { 1081 case anev_reg_unreg: 1082 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1083 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1084 ? "deregister" : "register"); 1085 env[i] = str[i]; i++; 1086 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1087 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1088 addr_lnid->lnid); 1089 env[i] = str[i]; i++; 1090 } 1091 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1092 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1093 addr_lnid->mac); 1094 env[i] = str[i]; i++; 1095 } 1096 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1097 token->cssid, token->ssid, token->devnum); 1098 env[i] = str[i]; i++; 1099 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1100 env[i] = str[i]; i++; 1101 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1102 token->chpid); 1103 env[i] = str[i]; i++; 1104 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1105 env[i] = str[i]; i++; 1106 break; 1107 case anev_abort: 1108 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1109 env[i] = str[i]; i++; 1110 break; 1111 case anev_reset: 1112 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1113 env[i] = str[i]; i++; 1114 break; 1115 } 1116 env[i] = NULL; 1117 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1118 } 1119 1120 struct qeth_bridge_state_data { 1121 struct work_struct worker; 1122 struct qeth_card *card; 1123 struct qeth_sbp_state_change qports; 1124 }; 1125 1126 static void qeth_bridge_state_change_worker(struct work_struct *work) 1127 { 1128 struct qeth_bridge_state_data *data = 1129 container_of(work, struct qeth_bridge_state_data, worker); 1130 /* We are only interested in the first entry - local port */ 1131 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1132 char env_locrem[32]; 1133 char env_role[32]; 1134 char env_state[32]; 1135 char *env[] = { 1136 env_locrem, 1137 env_role, 1138 env_state, 1139 NULL 1140 }; 1141 1142 /* Role should not change by itself, but if it did, */ 1143 /* information from the hardware is authoritative. */ 1144 mutex_lock(&data->card->conf_mutex); 1145 data->card->options.sbp.role = entry->role; 1146 mutex_unlock(&data->card->conf_mutex); 1147 1148 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1149 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1150 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1151 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1152 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1153 "<INVALID>"); 1154 snprintf(env_state, sizeof(env_state), "STATE=%s", 1155 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1156 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1157 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1158 "<INVALID>"); 1159 kobject_uevent_env(&data->card->gdev->dev.kobj, 1160 KOBJ_CHANGE, env); 1161 kfree(data); 1162 } 1163 1164 static void qeth_bridge_state_change(struct qeth_card *card, 1165 struct qeth_ipa_cmd *cmd) 1166 { 1167 struct qeth_sbp_state_change *qports = 1168 &cmd->data.sbp.data.state_change; 1169 struct qeth_bridge_state_data *data; 1170 int extrasize; 1171 1172 QETH_CARD_TEXT(card, 2, "brstchng"); 1173 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1174 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1175 return; 1176 } 1177 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1178 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1179 GFP_ATOMIC); 1180 if (!data) { 1181 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1182 return; 1183 } 1184 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1185 data->card = card; 1186 memcpy(&data->qports, qports, 1187 sizeof(struct qeth_sbp_state_change) + extrasize); 1188 queue_work(card->event_wq, &data->worker); 1189 } 1190 1191 struct qeth_bridge_host_data { 1192 struct work_struct worker; 1193 struct qeth_card *card; 1194 struct qeth_ipacmd_addr_change hostevs; 1195 }; 1196 1197 static void qeth_bridge_host_event_worker(struct work_struct *work) 1198 { 1199 struct qeth_bridge_host_data *data = 1200 container_of(work, struct qeth_bridge_host_data, worker); 1201 int i; 1202 1203 if (data->hostevs.lost_event_mask) { 1204 dev_info(&data->card->gdev->dev, 1205 "Address notification from the Bridge Port stopped %s (%s)\n", 1206 data->card->dev->name, 1207 (data->hostevs.lost_event_mask == 0x01) 1208 ? "Overflow" 1209 : (data->hostevs.lost_event_mask == 0x02) 1210 ? "Bridge port state change" 1211 : "Unknown reason"); 1212 mutex_lock(&data->card->conf_mutex); 1213 data->card->options.sbp.hostnotification = 0; 1214 mutex_unlock(&data->card->conf_mutex); 1215 qeth_bridge_emit_host_event(data->card, anev_abort, 1216 0, NULL, NULL); 1217 } else 1218 for (i = 0; i < data->hostevs.num_entries; i++) { 1219 struct qeth_ipacmd_addr_change_entry *entry = 1220 &data->hostevs.entry[i]; 1221 qeth_bridge_emit_host_event(data->card, 1222 anev_reg_unreg, 1223 entry->change_code, 1224 &entry->token, &entry->addr_lnid); 1225 } 1226 kfree(data); 1227 } 1228 1229 static void qeth_bridge_host_event(struct qeth_card *card, 1230 struct qeth_ipa_cmd *cmd) 1231 { 1232 struct qeth_ipacmd_addr_change *hostevs = 1233 &cmd->data.addrchange; 1234 struct qeth_bridge_host_data *data; 1235 int extrasize; 1236 1237 QETH_CARD_TEXT(card, 2, "brhostev"); 1238 if (cmd->hdr.return_code != 0x0000) { 1239 if (cmd->hdr.return_code == 0x0010) { 1240 if (hostevs->lost_event_mask == 0x00) 1241 hostevs->lost_event_mask = 0xff; 1242 } else { 1243 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1244 cmd->hdr.return_code); 1245 return; 1246 } 1247 } 1248 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1249 hostevs->num_entries; 1250 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1251 GFP_ATOMIC); 1252 if (!data) { 1253 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1254 return; 1255 } 1256 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1257 data->card = card; 1258 memcpy(&data->hostevs, hostevs, 1259 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1260 queue_work(card->event_wq, &data->worker); 1261 } 1262 1263 /* SETBRIDGEPORT support; sending commands */ 1264 1265 struct _qeth_sbp_cbctl { 1266 union { 1267 u32 supported; 1268 struct { 1269 enum qeth_sbp_roles *role; 1270 enum qeth_sbp_states *state; 1271 } qports; 1272 } data; 1273 }; 1274 1275 static int qeth_bridgeport_makerc(struct qeth_card *card, 1276 struct qeth_ipa_cmd *cmd) 1277 { 1278 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp; 1279 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code; 1280 u16 ipa_rc = cmd->hdr.return_code; 1281 u16 sbp_rc = sbp->hdr.return_code; 1282 int rc; 1283 1284 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS) 1285 return 0; 1286 1287 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) || 1288 (!IS_IQD(card) && ipa_rc == sbp_rc)) { 1289 switch (sbp_rc) { 1290 case IPA_RC_SUCCESS: 1291 rc = 0; 1292 break; 1293 case IPA_RC_L2_UNSUPPORTED_CMD: 1294 case IPA_RC_UNSUPPORTED_COMMAND: 1295 rc = -EOPNOTSUPP; 1296 break; 1297 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1298 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1299 rc = -ENODEV; /* maybe not the best code here? */ 1300 dev_err(&card->gdev->dev, 1301 "The device is not configured as a Bridge Port\n"); 1302 break; 1303 case IPA_RC_SBP_OSA_OS_MISMATCH: 1304 case IPA_RC_SBP_IQD_OS_MISMATCH: 1305 rc = -EPERM; 1306 dev_err(&card->gdev->dev, 1307 "A Bridge Port is already configured by a different operating system\n"); 1308 break; 1309 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1310 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1311 switch (setcmd) { 1312 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1313 rc = -EEXIST; 1314 dev_err(&card->gdev->dev, 1315 "The LAN already has a primary Bridge Port\n"); 1316 break; 1317 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1318 rc = -EBUSY; 1319 dev_err(&card->gdev->dev, 1320 "The device is already a primary Bridge Port\n"); 1321 break; 1322 default: 1323 rc = -EIO; 1324 } 1325 break; 1326 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1327 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1328 rc = -EBUSY; 1329 dev_err(&card->gdev->dev, 1330 "The device is already a secondary Bridge Port\n"); 1331 break; 1332 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1333 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1334 rc = -EEXIST; 1335 dev_err(&card->gdev->dev, 1336 "The LAN cannot have more secondary Bridge Ports\n"); 1337 break; 1338 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1339 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1340 rc = -EBUSY; 1341 dev_err(&card->gdev->dev, 1342 "The device is already a primary Bridge Port\n"); 1343 break; 1344 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1345 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1346 rc = -EACCES; 1347 dev_err(&card->gdev->dev, 1348 "The device is not authorized to be a Bridge Port\n"); 1349 break; 1350 default: 1351 rc = -EIO; 1352 } 1353 } else { 1354 switch (ipa_rc) { 1355 case IPA_RC_NOTSUPP: 1356 rc = -EOPNOTSUPP; 1357 break; 1358 case IPA_RC_UNSUPPORTED_COMMAND: 1359 rc = -EOPNOTSUPP; 1360 break; 1361 default: 1362 rc = -EIO; 1363 } 1364 } 1365 1366 if (rc) { 1367 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc); 1368 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc); 1369 } 1370 return rc; 1371 } 1372 1373 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1374 enum qeth_ipa_sbp_cmd sbp_cmd, 1375 unsigned int data_length) 1376 { 1377 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD : 1378 IPA_CMD_SETBRIDGEPORT_OSA; 1379 struct qeth_ipacmd_sbp_hdr *hdr; 1380 struct qeth_cmd_buffer *iob; 1381 1382 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE, 1383 data_length + 1384 offsetof(struct qeth_ipacmd_setbridgeport, 1385 data)); 1386 if (!iob) 1387 return iob; 1388 1389 hdr = &__ipa_cmd(iob)->data.sbp.hdr; 1390 hdr->cmdlength = sizeof(*hdr) + data_length; 1391 hdr->command_code = sbp_cmd; 1392 hdr->used_total = 1; 1393 hdr->seq_no = 1; 1394 return iob; 1395 } 1396 1397 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1398 struct qeth_reply *reply, unsigned long data) 1399 { 1400 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1401 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1402 int rc; 1403 1404 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1405 rc = qeth_bridgeport_makerc(card, cmd); 1406 if (rc) 1407 return rc; 1408 1409 cbctl->data.supported = 1410 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1411 return 0; 1412 } 1413 1414 /** 1415 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1416 * @card: qeth_card structure pointer. 1417 * 1418 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1419 * strucutre: card->options.sbp.supported_funcs. 1420 */ 1421 static void qeth_bridgeport_query_support(struct qeth_card *card) 1422 { 1423 struct qeth_cmd_buffer *iob; 1424 struct _qeth_sbp_cbctl cbctl; 1425 1426 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1427 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1428 SBP_DATA_SIZEOF(query_cmds_supp)); 1429 if (!iob) 1430 return; 1431 1432 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1433 &cbctl)) { 1434 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1435 card->options.sbp.supported_funcs = 0; 1436 return; 1437 } 1438 card->options.sbp.supported_funcs = cbctl.data.supported; 1439 } 1440 1441 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1442 struct qeth_reply *reply, unsigned long data) 1443 { 1444 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1445 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1446 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1447 int rc; 1448 1449 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1450 rc = qeth_bridgeport_makerc(card, cmd); 1451 if (rc) 1452 return rc; 1453 1454 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1455 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1456 return -EINVAL; 1457 } 1458 /* first entry contains the state of the local port */ 1459 if (qports->num_entries > 0) { 1460 if (cbctl->data.qports.role) 1461 *cbctl->data.qports.role = qports->entry[0].role; 1462 if (cbctl->data.qports.state) 1463 *cbctl->data.qports.state = qports->entry[0].state; 1464 } 1465 return 0; 1466 } 1467 1468 /** 1469 * qeth_bridgeport_query_ports() - query local bridgeport status. 1470 * @card: qeth_card structure pointer. 1471 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1472 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1473 * 1474 * Returns negative errno-compatible error indication or 0 on success. 1475 * 1476 * 'role' and 'state' are not updated in case of hardware operation failure. 1477 */ 1478 int qeth_bridgeport_query_ports(struct qeth_card *card, 1479 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1480 { 1481 struct qeth_cmd_buffer *iob; 1482 struct _qeth_sbp_cbctl cbctl = { 1483 .data = { 1484 .qports = { 1485 .role = role, 1486 .state = state, 1487 }, 1488 }, 1489 }; 1490 1491 QETH_CARD_TEXT(card, 2, "brqports"); 1492 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1493 return -EOPNOTSUPP; 1494 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1495 if (!iob) 1496 return -ENOMEM; 1497 1498 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1499 &cbctl); 1500 } 1501 1502 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1503 struct qeth_reply *reply, unsigned long data) 1504 { 1505 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1506 1507 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1508 return qeth_bridgeport_makerc(card, cmd); 1509 } 1510 1511 /** 1512 * qeth_bridgeport_setrole() - Assign primary role to the port. 1513 * @card: qeth_card structure pointer. 1514 * @role: Role to assign. 1515 * 1516 * Returns negative errno-compatible error indication or 0 on success. 1517 */ 1518 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1519 { 1520 struct qeth_cmd_buffer *iob; 1521 enum qeth_ipa_sbp_cmd setcmd; 1522 unsigned int cmdlength = 0; 1523 1524 QETH_CARD_TEXT(card, 2, "brsetrol"); 1525 switch (role) { 1526 case QETH_SBP_ROLE_NONE: 1527 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1528 break; 1529 case QETH_SBP_ROLE_PRIMARY: 1530 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1531 cmdlength = SBP_DATA_SIZEOF(set_primary); 1532 break; 1533 case QETH_SBP_ROLE_SECONDARY: 1534 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1535 break; 1536 default: 1537 return -EINVAL; 1538 } 1539 if (!(card->options.sbp.supported_funcs & setcmd)) 1540 return -EOPNOTSUPP; 1541 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1542 if (!iob) 1543 return -ENOMEM; 1544 1545 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL); 1546 } 1547 1548 /** 1549 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1550 * @card: qeth_card structure pointer, for debug messages. 1551 * 1552 * Returns negative errno-compatible error indication or 0 on success. 1553 */ 1554 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1555 { 1556 int rc; 1557 1558 if (pnso_rc == 0) 1559 switch (response) { 1560 case 0x0001: 1561 rc = 0; 1562 break; 1563 case 0x0004: 1564 case 0x0100: 1565 case 0x0106: 1566 rc = -EOPNOTSUPP; 1567 dev_err(&card->gdev->dev, 1568 "Setting address notification failed\n"); 1569 break; 1570 case 0x0107: 1571 rc = -EAGAIN; 1572 break; 1573 default: 1574 rc = -EIO; 1575 } 1576 else 1577 rc = -EIO; 1578 1579 if (rc) { 1580 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1581 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1582 } 1583 return rc; 1584 } 1585 1586 static void qeth_bridgeport_an_set_cb(void *priv, 1587 enum qdio_brinfo_entry_type type, void *entry) 1588 { 1589 struct qeth_card *card = (struct qeth_card *)priv; 1590 struct qdio_brinfo_entry_l2 *l2entry; 1591 u8 code; 1592 1593 if (type != l2_addr_lnid) { 1594 WARN_ON_ONCE(1); 1595 return; 1596 } 1597 1598 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1599 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1600 if (l2entry->addr_lnid.lnid < VLAN_N_VID) 1601 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1602 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1603 (struct net_if_token *)&l2entry->nit, 1604 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1605 } 1606 1607 /** 1608 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1609 * @card: qeth_card structure pointer. 1610 * @enable: 0 - disable, non-zero - enable notifications 1611 * 1612 * Returns negative errno-compatible error indication or 0 on success. 1613 * 1614 * On enable, emits a series of address notifications udev events for all 1615 * currently registered hosts. 1616 */ 1617 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 1618 { 1619 int rc; 1620 u16 response; 1621 struct ccw_device *ddev; 1622 struct subchannel_id schid; 1623 1624 if (!card) 1625 return -EINVAL; 1626 if (!card->options.sbp.supported_funcs) 1627 return -EOPNOTSUPP; 1628 ddev = CARD_DDEV(card); 1629 ccw_device_get_schid(ddev, &schid); 1630 1631 if (enable) { 1632 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 1633 rc = qdio_pnso_brinfo(schid, 1, &response, 1634 qeth_bridgeport_an_set_cb, card); 1635 } else 1636 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 1637 return qeth_anset_makerc(card, rc, response); 1638 } 1639 1640 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 1641 { 1642 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 1643 card->options.sbp.hostnotification); 1644 } 1645 1646 /* VNIC Characteristics support */ 1647 1648 /* handle VNICC IPA command return codes; convert to error codes */ 1649 static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc) 1650 { 1651 int rc; 1652 1653 switch (ipa_rc) { 1654 case IPA_RC_SUCCESS: 1655 return ipa_rc; 1656 case IPA_RC_L2_UNSUPPORTED_CMD: 1657 case IPA_RC_NOTSUPP: 1658 rc = -EOPNOTSUPP; 1659 break; 1660 case IPA_RC_VNICC_OOSEQ: 1661 rc = -EALREADY; 1662 break; 1663 case IPA_RC_VNICC_VNICBP: 1664 rc = -EBUSY; 1665 break; 1666 case IPA_RC_L2_ADDR_TABLE_FULL: 1667 rc = -ENOSPC; 1668 break; 1669 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 1670 rc = -EACCES; 1671 break; 1672 default: 1673 rc = -EIO; 1674 } 1675 1676 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 1677 return rc; 1678 } 1679 1680 /* generic VNICC request call back control */ 1681 struct _qeth_l2_vnicc_request_cbctl { 1682 struct { 1683 union{ 1684 u32 *sup_cmds; 1685 u32 *timeout; 1686 }; 1687 } result; 1688 }; 1689 1690 /* generic VNICC request call back */ 1691 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 1692 struct qeth_reply *reply, 1693 unsigned long data) 1694 { 1695 struct _qeth_l2_vnicc_request_cbctl *cbctl = 1696 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 1697 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1698 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 1699 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command; 1700 1701 QETH_CARD_TEXT(card, 2, "vniccrcb"); 1702 if (cmd->hdr.return_code) 1703 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code); 1704 /* return results to caller */ 1705 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported; 1706 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled; 1707 1708 if (sub_cmd == IPA_VNICC_QUERY_CMDS) 1709 *cbctl->result.sup_cmds = rep->data.query_cmds.sup_cmds; 1710 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT) 1711 *cbctl->result.timeout = rep->data.getset_timeout.timeout; 1712 1713 return 0; 1714 } 1715 1716 static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card, 1717 u32 vnicc_cmd, 1718 unsigned int data_length) 1719 { 1720 struct qeth_ipacmd_vnicc_hdr *hdr; 1721 struct qeth_cmd_buffer *iob; 1722 1723 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE, 1724 data_length + 1725 offsetof(struct qeth_ipacmd_vnicc, data)); 1726 if (!iob) 1727 return NULL; 1728 1729 hdr = &__ipa_cmd(iob)->data.vnicc.hdr; 1730 hdr->data_length = sizeof(*hdr) + data_length; 1731 hdr->sub_command = vnicc_cmd; 1732 return iob; 1733 } 1734 1735 /* VNICC query VNIC characteristics request */ 1736 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 1737 { 1738 struct qeth_cmd_buffer *iob; 1739 1740 QETH_CARD_TEXT(card, 2, "vniccqch"); 1741 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0); 1742 if (!iob) 1743 return -ENOMEM; 1744 1745 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1746 } 1747 1748 /* VNICC query sub commands request */ 1749 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 1750 u32 *sup_cmds) 1751 { 1752 struct _qeth_l2_vnicc_request_cbctl cbctl; 1753 struct qeth_cmd_buffer *iob; 1754 1755 QETH_CARD_TEXT(card, 2, "vniccqcm"); 1756 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS, 1757 VNICC_DATA_SIZEOF(query_cmds)); 1758 if (!iob) 1759 return -ENOMEM; 1760 1761 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char; 1762 1763 /* prepare callback control */ 1764 cbctl.result.sup_cmds = sup_cmds; 1765 1766 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl); 1767 } 1768 1769 /* VNICC enable/disable characteristic request */ 1770 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 1771 u32 cmd) 1772 { 1773 struct qeth_cmd_buffer *iob; 1774 1775 QETH_CARD_TEXT(card, 2, "vniccedc"); 1776 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char)); 1777 if (!iob) 1778 return -ENOMEM; 1779 1780 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char; 1781 1782 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1783 } 1784 1785 /* VNICC get/set timeout for characteristic request */ 1786 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 1787 u32 cmd, u32 *timeout) 1788 { 1789 struct qeth_vnicc_getset_timeout *getset_timeout; 1790 struct _qeth_l2_vnicc_request_cbctl cbctl; 1791 struct qeth_cmd_buffer *iob; 1792 1793 QETH_CARD_TEXT(card, 2, "vniccgst"); 1794 iob = qeth_l2_vnicc_build_cmd(card, cmd, 1795 VNICC_DATA_SIZEOF(getset_timeout)); 1796 if (!iob) 1797 return -ENOMEM; 1798 1799 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout; 1800 getset_timeout->vnic_char = vnicc; 1801 1802 if (cmd == IPA_VNICC_SET_TIMEOUT) 1803 getset_timeout->timeout = *timeout; 1804 1805 /* prepare callback control */ 1806 if (cmd == IPA_VNICC_GET_TIMEOUT) 1807 cbctl.result.timeout = timeout; 1808 1809 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl); 1810 } 1811 1812 /* set current VNICC flag state; called from sysfs store function */ 1813 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 1814 { 1815 int rc = 0; 1816 u32 cmd; 1817 1818 QETH_CARD_TEXT(card, 2, "vniccsch"); 1819 1820 /* do not change anything if BridgePort is enabled */ 1821 if (qeth_bridgeport_is_in_use(card)) 1822 return -EBUSY; 1823 1824 /* check if characteristic and enable/disable are supported */ 1825 if (!(card->options.vnicc.sup_chars & vnicc) || 1826 !(card->options.vnicc.set_char_sup & vnicc)) 1827 return -EOPNOTSUPP; 1828 1829 /* set enable/disable command and store wanted characteristic */ 1830 if (state) { 1831 cmd = IPA_VNICC_ENABLE; 1832 card->options.vnicc.wanted_chars |= vnicc; 1833 } else { 1834 cmd = IPA_VNICC_DISABLE; 1835 card->options.vnicc.wanted_chars &= ~vnicc; 1836 } 1837 1838 /* do we need to do anything? */ 1839 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 1840 return rc; 1841 1842 /* if card is not ready, simply stop here */ 1843 if (!qeth_card_hw_is_reachable(card)) { 1844 if (state) 1845 card->options.vnicc.cur_chars |= vnicc; 1846 else 1847 card->options.vnicc.cur_chars &= ~vnicc; 1848 return rc; 1849 } 1850 1851 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 1852 if (rc) 1853 card->options.vnicc.wanted_chars = 1854 card->options.vnicc.cur_chars; 1855 else { 1856 /* successful online VNICC change; handle special cases */ 1857 if (state && vnicc == QETH_VNICC_RX_BCAST) 1858 card->options.vnicc.rx_bcast_enabled = true; 1859 if (!state && vnicc == QETH_VNICC_LEARNING) 1860 qeth_l2_vnicc_recover_timeout(card, vnicc, 1861 &card->options.vnicc.learning_timeout); 1862 } 1863 1864 return rc; 1865 } 1866 1867 /* get current VNICC flag state; called from sysfs show function */ 1868 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 1869 { 1870 int rc = 0; 1871 1872 QETH_CARD_TEXT(card, 2, "vniccgch"); 1873 1874 /* do not get anything if BridgePort is enabled */ 1875 if (qeth_bridgeport_is_in_use(card)) 1876 return -EBUSY; 1877 1878 /* check if characteristic is supported */ 1879 if (!(card->options.vnicc.sup_chars & vnicc)) 1880 return -EOPNOTSUPP; 1881 1882 /* if card is ready, query current VNICC state */ 1883 if (qeth_card_hw_is_reachable(card)) 1884 rc = qeth_l2_vnicc_query_chars(card); 1885 1886 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 1887 return rc; 1888 } 1889 1890 /* set VNICC timeout; called from sysfs store function. Currently, only learning 1891 * supports timeout 1892 */ 1893 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 1894 { 1895 int rc = 0; 1896 1897 QETH_CARD_TEXT(card, 2, "vniccsto"); 1898 1899 /* do not change anything if BridgePort is enabled */ 1900 if (qeth_bridgeport_is_in_use(card)) 1901 return -EBUSY; 1902 1903 /* check if characteristic and set_timeout are supported */ 1904 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 1905 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 1906 return -EOPNOTSUPP; 1907 1908 /* do we need to do anything? */ 1909 if (card->options.vnicc.learning_timeout == timeout) 1910 return rc; 1911 1912 /* if card is not ready, simply store the value internally and return */ 1913 if (!qeth_card_hw_is_reachable(card)) { 1914 card->options.vnicc.learning_timeout = timeout; 1915 return rc; 1916 } 1917 1918 /* send timeout value to card; if successful, store value internally */ 1919 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 1920 IPA_VNICC_SET_TIMEOUT, &timeout); 1921 if (!rc) 1922 card->options.vnicc.learning_timeout = timeout; 1923 1924 return rc; 1925 } 1926 1927 /* get current VNICC timeout; called from sysfs show function. Currently, only 1928 * learning supports timeout 1929 */ 1930 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 1931 { 1932 int rc = 0; 1933 1934 QETH_CARD_TEXT(card, 2, "vniccgto"); 1935 1936 /* do not get anything if BridgePort is enabled */ 1937 if (qeth_bridgeport_is_in_use(card)) 1938 return -EBUSY; 1939 1940 /* check if characteristic and get_timeout are supported */ 1941 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 1942 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 1943 return -EOPNOTSUPP; 1944 /* if card is ready, get timeout. Otherwise, just return stored value */ 1945 *timeout = card->options.vnicc.learning_timeout; 1946 if (qeth_card_hw_is_reachable(card)) 1947 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 1948 IPA_VNICC_GET_TIMEOUT, 1949 timeout); 1950 1951 return rc; 1952 } 1953 1954 /* check if VNICC is currently enabled */ 1955 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 1956 { 1957 /* if everything is turned off, VNICC is not active */ 1958 if (!card->options.vnicc.cur_chars) 1959 return false; 1960 /* default values are only OK if rx_bcast was not enabled by user 1961 * or the card is offline. 1962 */ 1963 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 1964 if (!card->options.vnicc.rx_bcast_enabled || 1965 !qeth_card_hw_is_reachable(card)) 1966 return false; 1967 } 1968 return true; 1969 } 1970 1971 /* recover user timeout setting */ 1972 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 1973 u32 *timeout) 1974 { 1975 if (card->options.vnicc.sup_chars & vnicc && 1976 card->options.vnicc.getset_timeout_sup & vnicc && 1977 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 1978 timeout)) 1979 return false; 1980 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 1981 return true; 1982 } 1983 1984 /* recover user characteristic setting */ 1985 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 1986 bool enable) 1987 { 1988 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 1989 1990 if (card->options.vnicc.sup_chars & vnicc && 1991 card->options.vnicc.set_char_sup & vnicc && 1992 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 1993 return false; 1994 card->options.vnicc.wanted_chars &= ~vnicc; 1995 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 1996 return true; 1997 } 1998 1999 /* (re-)initialize VNICC */ 2000 static void qeth_l2_vnicc_init(struct qeth_card *card) 2001 { 2002 u32 *timeout = &card->options.vnicc.learning_timeout; 2003 bool enable, error = false; 2004 unsigned int chars_len, i; 2005 unsigned long chars_tmp; 2006 u32 sup_cmds, vnicc; 2007 2008 QETH_CARD_TEXT(card, 2, "vniccini"); 2009 /* reset rx_bcast */ 2010 card->options.vnicc.rx_bcast_enabled = 0; 2011 /* initial query and storage of VNIC characteristics */ 2012 if (qeth_l2_vnicc_query_chars(card)) { 2013 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2014 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2015 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2016 /* fail quietly if user didn't change the default config */ 2017 card->options.vnicc.sup_chars = 0; 2018 card->options.vnicc.cur_chars = 0; 2019 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2020 return; 2021 } 2022 /* get supported commands for each supported characteristic */ 2023 chars_tmp = card->options.vnicc.sup_chars; 2024 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2025 for_each_set_bit(i, &chars_tmp, chars_len) { 2026 vnicc = BIT(i); 2027 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) { 2028 sup_cmds = 0; 2029 error = true; 2030 } 2031 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) && 2032 (sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2033 card->options.vnicc.getset_timeout_sup |= vnicc; 2034 else 2035 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2036 if ((sup_cmds & IPA_VNICC_ENABLE) && 2037 (sup_cmds & IPA_VNICC_DISABLE)) 2038 card->options.vnicc.set_char_sup |= vnicc; 2039 else 2040 card->options.vnicc.set_char_sup &= ~vnicc; 2041 } 2042 /* enforce assumed default values and recover settings, if changed */ 2043 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2044 timeout); 2045 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; 2046 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; 2047 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2048 for_each_set_bit(i, &chars_tmp, chars_len) { 2049 vnicc = BIT(i); 2050 enable = card->options.vnicc.wanted_chars & vnicc; 2051 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2052 } 2053 if (error) 2054 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2055 } 2056 2057 /* configure default values of VNIC characteristics */ 2058 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2059 { 2060 /* characteristics values */ 2061 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2062 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2063 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2064 /* supported commands */ 2065 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2066 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2067 /* settings wanted by users */ 2068 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2069 } 2070 2071 module_init(qeth_l2_init); 2072 module_exit(qeth_l2_exit); 2073 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2074 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2075 MODULE_LICENSE("GPL"); 2076