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 int qeth_l2_stop(struct net_device *); 29 static void qeth_bridgeport_query_support(struct qeth_card *card); 30 static void qeth_bridge_state_change(struct qeth_card *card, 31 struct qeth_ipa_cmd *cmd); 32 static void qeth_bridge_host_event(struct qeth_card *card, 33 struct qeth_ipa_cmd *cmd); 34 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); 35 static void qeth_l2_vnicc_init(struct qeth_card *card); 36 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 37 u32 *timeout); 38 39 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 40 { 41 struct qeth_card *card; 42 struct net_device *ndev; 43 __u16 temp_dev_no; 44 unsigned long flags; 45 struct ccw_dev_id read_devid; 46 47 ndev = NULL; 48 memcpy(&temp_dev_no, read_dev_no, 2); 49 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 50 list_for_each_entry(card, &qeth_core_card_list.list, list) { 51 ccw_device_get_id(CARD_RDEV(card), &read_devid); 52 if (read_devid.devno == temp_dev_no) { 53 ndev = card->dev; 54 break; 55 } 56 } 57 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 58 return ndev; 59 } 60 61 static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode) 62 { 63 int rc; 64 65 if (retcode) 66 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 67 switch (retcode) { 68 case IPA_RC_SUCCESS: 69 rc = 0; 70 break; 71 case IPA_RC_L2_UNSUPPORTED_CMD: 72 rc = -EOPNOTSUPP; 73 break; 74 case IPA_RC_L2_ADDR_TABLE_FULL: 75 rc = -ENOSPC; 76 break; 77 case IPA_RC_L2_DUP_MAC: 78 case IPA_RC_L2_DUP_LAYER3_MAC: 79 rc = -EEXIST; 80 break; 81 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 82 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 83 rc = -EPERM; 84 break; 85 case IPA_RC_L2_MAC_NOT_FOUND: 86 rc = -ENOENT; 87 break; 88 case -ENOMEM: 89 rc = -ENOMEM; 90 break; 91 default: 92 rc = -EIO; 93 break; 94 } 95 return rc; 96 } 97 98 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 99 enum qeth_ipa_cmds ipacmd) 100 { 101 struct qeth_ipa_cmd *cmd; 102 struct qeth_cmd_buffer *iob; 103 104 QETH_CARD_TEXT(card, 2, "L2sdmac"); 105 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 106 if (!iob) 107 return -ENOMEM; 108 cmd = __ipa_cmd(iob); 109 cmd->data.setdelmac.mac_length = ETH_ALEN; 110 ether_addr_copy(cmd->data.setdelmac.mac, mac); 111 return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob, 112 NULL, NULL)); 113 } 114 115 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 116 { 117 int rc; 118 119 QETH_CARD_TEXT(card, 2, "L2Setmac"); 120 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 121 if (rc == 0) { 122 dev_info(&card->gdev->dev, 123 "MAC address %pM successfully registered on device %s\n", 124 mac, card->dev->name); 125 } else { 126 switch (rc) { 127 case -EEXIST: 128 dev_warn(&card->gdev->dev, 129 "MAC address %pM already exists\n", mac); 130 break; 131 case -EPERM: 132 dev_warn(&card->gdev->dev, 133 "MAC address %pM is not authorized\n", mac); 134 break; 135 } 136 } 137 return rc; 138 } 139 140 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) 141 { 142 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? 143 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC; 144 int rc; 145 146 QETH_CARD_TEXT(card, 2, "L2Wmac"); 147 rc = qeth_l2_send_setdelmac(card, mac, cmd); 148 if (rc == -EEXIST) 149 QETH_DBF_MESSAGE(2, "MAC %pM already registered on %s\n", 150 mac, QETH_CARD_IFNAME(card)); 151 else if (rc) 152 QETH_DBF_MESSAGE(2, "Failed to register MAC %pM on %s: %d\n", 153 mac, QETH_CARD_IFNAME(card), rc); 154 return rc; 155 } 156 157 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) 158 { 159 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? 160 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; 161 int rc; 162 163 QETH_CARD_TEXT(card, 2, "L2Rmac"); 164 rc = qeth_l2_send_setdelmac(card, mac, cmd); 165 if (rc) 166 QETH_DBF_MESSAGE(2, "Failed to delete MAC %pM on %s: %d\n", 167 mac, QETH_CARD_IFNAME(card), rc); 168 return rc; 169 } 170 171 static void qeth_l2_del_all_macs(struct qeth_card *card) 172 { 173 struct qeth_mac *mac; 174 struct hlist_node *tmp; 175 int i; 176 177 spin_lock_bh(&card->mclock); 178 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 179 hash_del(&mac->hnode); 180 kfree(mac); 181 } 182 spin_unlock_bh(&card->mclock); 183 } 184 185 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 186 { 187 if (card->info.type == QETH_CARD_TYPE_OSN) 188 return RTN_UNICAST; 189 if (is_broadcast_ether_addr(skb->data)) 190 return RTN_BROADCAST; 191 if (is_multicast_ether_addr(skb->data)) 192 return RTN_MULTICAST; 193 return RTN_UNICAST; 194 } 195 196 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb, 197 int cast_type, unsigned int data_len) 198 { 199 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 200 201 memset(hdr, 0, sizeof(struct qeth_hdr)); 202 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 203 hdr->hdr.l2.pkt_length = data_len; 204 205 /* set byte byte 3 to casting flags */ 206 if (cast_type == RTN_MULTICAST) 207 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 208 else if (cast_type == RTN_BROADCAST) 209 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 210 else 211 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 212 213 /* VSWITCH relies on the VLAN 214 * information to be present in 215 * the QDIO header */ 216 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 217 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 218 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 219 } 220 } 221 222 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode) 223 { 224 if (retcode) 225 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 226 227 switch (retcode) { 228 case IPA_RC_SUCCESS: 229 return 0; 230 case IPA_RC_L2_INVALID_VLAN_ID: 231 return -EINVAL; 232 case IPA_RC_L2_DUP_VLAN_ID: 233 return -EEXIST; 234 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 235 return -ENOENT; 236 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 237 return -EPERM; 238 case -ENOMEM: 239 return -ENOMEM; 240 default: 241 return -EIO; 242 } 243 } 244 245 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 246 struct qeth_reply *reply, 247 unsigned long data) 248 { 249 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 250 251 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 252 if (cmd->hdr.return_code) { 253 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n", 254 cmd->data.setdelvlan.vlan_id, 255 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 256 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 257 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 258 } 259 return 0; 260 } 261 262 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 263 enum qeth_ipa_cmds ipacmd) 264 { 265 struct qeth_ipa_cmd *cmd; 266 struct qeth_cmd_buffer *iob; 267 268 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 269 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 270 if (!iob) 271 return -ENOMEM; 272 cmd = __ipa_cmd(iob); 273 cmd->data.setdelvlan.vlan_id = i; 274 return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob, 275 qeth_l2_send_setdelvlan_cb, NULL)); 276 } 277 278 static void qeth_l2_process_vlans(struct qeth_card *card) 279 { 280 struct qeth_vlan_vid *id; 281 282 QETH_CARD_TEXT(card, 3, "L2prcvln"); 283 mutex_lock(&card->vid_list_mutex); 284 list_for_each_entry(id, &card->vid_list, list) { 285 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 286 } 287 mutex_unlock(&card->vid_list_mutex); 288 } 289 290 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 291 __be16 proto, u16 vid) 292 { 293 struct qeth_card *card = dev->ml_priv; 294 struct qeth_vlan_vid *id; 295 int rc; 296 297 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 298 if (!vid) 299 return 0; 300 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 301 QETH_CARD_TEXT(card, 3, "aidREC"); 302 return 0; 303 } 304 id = kmalloc(sizeof(*id), GFP_KERNEL); 305 if (id) { 306 id->vid = vid; 307 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 308 if (rc) { 309 kfree(id); 310 return rc; 311 } 312 mutex_lock(&card->vid_list_mutex); 313 list_add_tail(&id->list, &card->vid_list); 314 mutex_unlock(&card->vid_list_mutex); 315 } else { 316 return -ENOMEM; 317 } 318 return 0; 319 } 320 321 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 322 __be16 proto, u16 vid) 323 { 324 struct qeth_vlan_vid *id, *tmpid = NULL; 325 struct qeth_card *card = dev->ml_priv; 326 int rc = 0; 327 328 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 329 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 330 QETH_CARD_TEXT(card, 3, "kidREC"); 331 return 0; 332 } 333 mutex_lock(&card->vid_list_mutex); 334 list_for_each_entry(id, &card->vid_list, list) { 335 if (id->vid == vid) { 336 list_del(&id->list); 337 tmpid = id; 338 break; 339 } 340 } 341 mutex_unlock(&card->vid_list_mutex); 342 if (tmpid) { 343 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 344 kfree(tmpid); 345 } 346 return rc; 347 } 348 349 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 350 { 351 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 352 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 353 354 qeth_set_allowed_threads(card, 0, 1); 355 if (card->read.state == CH_STATE_UP && 356 card->write.state == CH_STATE_UP && 357 (card->state == CARD_STATE_UP)) { 358 if (recovery_mode && 359 card->info.type != QETH_CARD_TYPE_OSN) { 360 qeth_l2_stop(card->dev); 361 } else { 362 rtnl_lock(); 363 dev_close(card->dev); 364 rtnl_unlock(); 365 } 366 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 367 card->state = CARD_STATE_SOFTSETUP; 368 } 369 if (card->state == CARD_STATE_SOFTSETUP) { 370 qeth_l2_del_all_macs(card); 371 qeth_clear_ipacmd_list(card); 372 card->state = CARD_STATE_HARDSETUP; 373 } 374 if (card->state == CARD_STATE_HARDSETUP) { 375 qeth_qdio_clear_card(card, 0); 376 qeth_clear_qdio_buffers(card); 377 qeth_clear_working_pool_list(card); 378 card->state = CARD_STATE_DOWN; 379 } 380 if (card->state == CARD_STATE_DOWN) { 381 qeth_clear_cmd_buffers(&card->read); 382 qeth_clear_cmd_buffers(&card->write); 383 } 384 } 385 386 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 387 int budget, int *done) 388 { 389 int work_done = 0; 390 struct sk_buff *skb; 391 struct qeth_hdr *hdr; 392 unsigned int len; 393 394 *done = 0; 395 WARN_ON_ONCE(!budget); 396 while (budget) { 397 skb = qeth_core_get_next_skb(card, 398 &card->qdio.in_q->bufs[card->rx.b_index], 399 &card->rx.b_element, &card->rx.e_offset, &hdr); 400 if (!skb) { 401 *done = 1; 402 break; 403 } 404 switch (hdr->hdr.l2.id) { 405 case QETH_HEADER_TYPE_LAYER2: 406 skb->protocol = eth_type_trans(skb, skb->dev); 407 qeth_rx_csum(card, skb, hdr->hdr.l2.flags[1]); 408 if (skb->protocol == htons(ETH_P_802_2)) 409 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 410 len = skb->len; 411 napi_gro_receive(&card->napi, skb); 412 break; 413 case QETH_HEADER_TYPE_OSN: 414 if (card->info.type == QETH_CARD_TYPE_OSN) { 415 skb_push(skb, sizeof(struct qeth_hdr)); 416 skb_copy_to_linear_data(skb, hdr, 417 sizeof(struct qeth_hdr)); 418 len = skb->len; 419 card->osn_info.data_cb(skb); 420 break; 421 } 422 /* else unknown */ 423 default: 424 dev_kfree_skb_any(skb); 425 QETH_CARD_TEXT(card, 3, "inbunkno"); 426 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 427 continue; 428 } 429 work_done++; 430 budget--; 431 card->stats.rx_packets++; 432 card->stats.rx_bytes += len; 433 } 434 return work_done; 435 } 436 437 static int qeth_l2_request_initial_mac(struct qeth_card *card) 438 { 439 int rc = 0; 440 441 QETH_DBF_TEXT(SETUP, 2, "l2reqmac"); 442 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 443 444 if (MACHINE_IS_VM) { 445 rc = qeth_vm_request_mac(card); 446 if (!rc) 447 goto out; 448 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n", 449 CARD_BUS_ID(card), rc); 450 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc); 451 /* fall back to alternative mechanism: */ 452 } 453 454 if (card->info.type == QETH_CARD_TYPE_IQD || 455 card->info.type == QETH_CARD_TYPE_OSM || 456 card->info.type == QETH_CARD_TYPE_OSX || 457 card->info.guestlan) { 458 rc = qeth_setadpparms_change_macaddr(card); 459 if (!rc) 460 goto out; 461 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %s: x%x\n", 462 CARD_BUS_ID(card), rc); 463 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 464 /* fall back once more: */ 465 } 466 467 /* some devices don't support a custom MAC address: */ 468 if (card->info.type == QETH_CARD_TYPE_OSM || 469 card->info.type == QETH_CARD_TYPE_OSX) 470 return (rc) ? rc : -EADDRNOTAVAIL; 471 eth_hw_addr_random(card->dev); 472 473 out: 474 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len); 475 return 0; 476 } 477 478 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 479 { 480 struct sockaddr *addr = p; 481 struct qeth_card *card = dev->ml_priv; 482 u8 old_addr[ETH_ALEN]; 483 int rc = 0; 484 485 QETH_CARD_TEXT(card, 3, "setmac"); 486 487 if (card->info.type == QETH_CARD_TYPE_OSN || 488 card->info.type == QETH_CARD_TYPE_OSM || 489 card->info.type == QETH_CARD_TYPE_OSX) { 490 QETH_CARD_TEXT(card, 3, "setmcTYP"); 491 return -EOPNOTSUPP; 492 } 493 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 494 if (!is_valid_ether_addr(addr->sa_data)) 495 return -EADDRNOTAVAIL; 496 497 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 498 QETH_CARD_TEXT(card, 3, "setmcREC"); 499 return -ERESTARTSYS; 500 } 501 502 /* avoid racing against concurrent state change: */ 503 if (!mutex_trylock(&card->conf_mutex)) 504 return -EAGAIN; 505 506 if (!qeth_card_hw_is_reachable(card)) { 507 ether_addr_copy(dev->dev_addr, addr->sa_data); 508 goto out_unlock; 509 } 510 511 /* don't register the same address twice */ 512 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) && 513 (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 514 goto out_unlock; 515 516 /* add the new address, switch over, drop the old */ 517 rc = qeth_l2_send_setmac(card, addr->sa_data); 518 if (rc) 519 goto out_unlock; 520 ether_addr_copy(old_addr, dev->dev_addr); 521 ether_addr_copy(dev->dev_addr, addr->sa_data); 522 523 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) 524 qeth_l2_remove_mac(card, old_addr); 525 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 526 527 out_unlock: 528 mutex_unlock(&card->conf_mutex); 529 return rc; 530 } 531 532 static void qeth_promisc_to_bridge(struct qeth_card *card) 533 { 534 struct net_device *dev = card->dev; 535 enum qeth_ipa_promisc_modes promisc_mode; 536 int role; 537 int rc; 538 539 QETH_CARD_TEXT(card, 3, "pmisc2br"); 540 541 if (!card->options.sbp.reflect_promisc) 542 return; 543 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 544 : SET_PROMISC_MODE_OFF; 545 if (promisc_mode == card->info.promisc_mode) 546 return; 547 548 if (promisc_mode == SET_PROMISC_MODE_ON) { 549 if (card->options.sbp.reflect_promisc_primary) 550 role = QETH_SBP_ROLE_PRIMARY; 551 else 552 role = QETH_SBP_ROLE_SECONDARY; 553 } else 554 role = QETH_SBP_ROLE_NONE; 555 556 rc = qeth_bridgeport_setrole(card, role); 557 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 558 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 559 if (!rc) { 560 card->options.sbp.role = role; 561 card->info.promisc_mode = promisc_mode; 562 } 563 564 } 565 /* New MAC address is added to the hash table and marked to be written on card 566 * only if there is not in the hash table storage already 567 * 568 */ 569 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 570 { 571 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 572 struct qeth_mac *mac; 573 574 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 575 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 576 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 577 return; 578 } 579 } 580 581 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 582 if (!mac) 583 return; 584 585 ether_addr_copy(mac->mac_addr, ha->addr); 586 mac->disp_flag = QETH_DISP_ADDR_ADD; 587 588 hash_add(card->mac_htable, &mac->hnode, mac_hash); 589 } 590 591 static void qeth_l2_set_rx_mode(struct net_device *dev) 592 { 593 struct qeth_card *card = dev->ml_priv; 594 struct netdev_hw_addr *ha; 595 struct qeth_mac *mac; 596 struct hlist_node *tmp; 597 int i; 598 int rc; 599 600 if (card->info.type == QETH_CARD_TYPE_OSN) 601 return; 602 603 QETH_CARD_TEXT(card, 3, "setmulti"); 604 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 605 (card->state != CARD_STATE_UP)) 606 return; 607 608 spin_lock_bh(&card->mclock); 609 610 netdev_for_each_mc_addr(ha, dev) 611 qeth_l2_add_mac(card, ha); 612 netdev_for_each_uc_addr(ha, dev) 613 qeth_l2_add_mac(card, ha); 614 615 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 616 switch (mac->disp_flag) { 617 case QETH_DISP_ADDR_DELETE: 618 qeth_l2_remove_mac(card, mac->mac_addr); 619 hash_del(&mac->hnode); 620 kfree(mac); 621 break; 622 case QETH_DISP_ADDR_ADD: 623 rc = qeth_l2_write_mac(card, mac->mac_addr); 624 if (rc) { 625 hash_del(&mac->hnode); 626 kfree(mac); 627 break; 628 } 629 /* fall through */ 630 default: 631 /* for next call to set_rx_mode(): */ 632 mac->disp_flag = QETH_DISP_ADDR_DELETE; 633 } 634 } 635 636 spin_unlock_bh(&card->mclock); 637 638 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 639 qeth_setadp_promisc_mode(card); 640 else 641 qeth_promisc_to_bridge(card); 642 } 643 644 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb, 645 struct qeth_qdio_out_q *queue, int cast_type) 646 { 647 unsigned int data_offset = ETH_HLEN; 648 struct qeth_hdr *hdr; 649 int rc; 650 651 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 652 if (!hdr) 653 return -ENOMEM; 654 qeth_l2_fill_header(hdr, skb, cast_type, skb->len); 655 skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr), 656 data_offset); 657 658 if (!qeth_get_elements_no(card, skb, 1, data_offset)) { 659 rc = -E2BIG; 660 goto out; 661 } 662 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, 663 sizeof(*hdr) + data_offset); 664 out: 665 if (rc) 666 kmem_cache_free(qeth_core_header_cache, hdr); 667 return rc; 668 } 669 670 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb, 671 struct qeth_qdio_out_q *queue, int cast_type, 672 int ipv) 673 { 674 int push_len = sizeof(struct qeth_hdr); 675 unsigned int elements, nr_frags; 676 unsigned int hdr_elements = 0; 677 struct qeth_hdr *hdr = NULL; 678 unsigned int hd_len = 0; 679 int rc; 680 681 /* fix hardware limitation: as long as we do not have sbal 682 * chaining we can not send long frag lists 683 */ 684 if (!qeth_get_elements_no(card, skb, 0, 0)) { 685 rc = skb_linearize(skb); 686 687 if (card->options.performance_stats) { 688 if (rc) 689 card->perf_stats.tx_linfail++; 690 else 691 card->perf_stats.tx_lin++; 692 } 693 if (rc) 694 return rc; 695 } 696 nr_frags = skb_shinfo(skb)->nr_frags; 697 698 rc = skb_cow_head(skb, push_len); 699 if (rc) 700 return rc; 701 push_len = qeth_push_hdr(skb, &hdr, push_len); 702 if (push_len < 0) 703 return push_len; 704 if (!push_len) { 705 /* hdr was allocated from cache */ 706 hd_len = sizeof(*hdr); 707 hdr_elements = 1; 708 } 709 qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len); 710 if (skb->ip_summed == CHECKSUM_PARTIAL) { 711 qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv); 712 if (card->options.performance_stats) 713 card->perf_stats.tx_csum++; 714 } 715 716 elements = qeth_get_elements_no(card, skb, hdr_elements, 0); 717 if (!elements) { 718 rc = -E2BIG; 719 goto out; 720 } 721 elements += hdr_elements; 722 723 /* TODO: remove the skb_orphan() once TX completion is fast enough */ 724 skb_orphan(skb); 725 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements); 726 out: 727 if (!rc) { 728 if (card->options.performance_stats && nr_frags) { 729 card->perf_stats.sg_skbs_sent++; 730 /* nr_frags + skb->data */ 731 card->perf_stats.sg_frags_sent += nr_frags + 1; 732 } 733 } else { 734 if (hd_len) 735 kmem_cache_free(qeth_core_header_cache, hdr); 736 if (rc == -EBUSY) 737 /* roll back to ETH header */ 738 skb_pull(skb, push_len); 739 } 740 return rc; 741 } 742 743 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 744 struct qeth_qdio_out_q *queue) 745 { 746 unsigned int elements; 747 struct qeth_hdr *hdr; 748 749 if (skb->protocol == htons(ETH_P_IPV6)) 750 return -EPROTONOSUPPORT; 751 752 hdr = (struct qeth_hdr *)skb->data; 753 elements = qeth_get_elements_no(card, skb, 0, 0); 754 if (!elements) 755 return -E2BIG; 756 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr))) 757 return -EINVAL; 758 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements); 759 } 760 761 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 762 struct net_device *dev) 763 { 764 struct qeth_card *card = dev->ml_priv; 765 int cast_type = qeth_l2_get_cast_type(card, skb); 766 int ipv = qeth_get_ip_version(skb); 767 struct qeth_qdio_out_q *queue; 768 int tx_bytes = skb->len; 769 int rc; 770 771 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 772 card->stats.tx_carrier_errors++; 773 goto tx_drop; 774 } 775 776 queue = qeth_get_tx_queue(card, skb, ipv, cast_type); 777 778 if (card->options.performance_stats) { 779 card->perf_stats.outbound_cnt++; 780 card->perf_stats.outbound_start_time = qeth_get_micros(); 781 } 782 netif_stop_queue(dev); 783 784 switch (card->info.type) { 785 case QETH_CARD_TYPE_OSN: 786 rc = qeth_l2_xmit_osn(card, skb, queue); 787 break; 788 case QETH_CARD_TYPE_IQD: 789 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type); 790 break; 791 default: 792 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type, ipv); 793 } 794 795 if (!rc) { 796 card->stats.tx_packets++; 797 card->stats.tx_bytes += tx_bytes; 798 if (card->options.performance_stats) 799 card->perf_stats.outbound_time += qeth_get_micros() - 800 card->perf_stats.outbound_start_time; 801 netif_wake_queue(dev); 802 return NETDEV_TX_OK; 803 } else if (rc == -EBUSY) { 804 return NETDEV_TX_BUSY; 805 } /* else fall through */ 806 807 tx_drop: 808 card->stats.tx_dropped++; 809 card->stats.tx_errors++; 810 dev_kfree_skb_any(skb); 811 netif_wake_queue(dev); 812 return NETDEV_TX_OK; 813 } 814 815 static int __qeth_l2_open(struct net_device *dev) 816 { 817 struct qeth_card *card = dev->ml_priv; 818 int rc = 0; 819 820 QETH_CARD_TEXT(card, 4, "qethopen"); 821 if (card->state == CARD_STATE_UP) 822 return rc; 823 if (card->state != CARD_STATE_SOFTSETUP) 824 return -ENODEV; 825 826 if ((card->info.type != QETH_CARD_TYPE_OSN) && 827 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 828 QETH_CARD_TEXT(card, 4, "nomacadr"); 829 return -EPERM; 830 } 831 card->data.state = CH_STATE_UP; 832 card->state = CARD_STATE_UP; 833 netif_start_queue(dev); 834 835 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 836 napi_enable(&card->napi); 837 napi_schedule(&card->napi); 838 } else 839 rc = -EIO; 840 return rc; 841 } 842 843 static int qeth_l2_open(struct net_device *dev) 844 { 845 struct qeth_card *card = dev->ml_priv; 846 847 QETH_CARD_TEXT(card, 5, "qethope_"); 848 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 849 QETH_CARD_TEXT(card, 3, "openREC"); 850 return -ERESTARTSYS; 851 } 852 return __qeth_l2_open(dev); 853 } 854 855 static int qeth_l2_stop(struct net_device *dev) 856 { 857 struct qeth_card *card = dev->ml_priv; 858 859 QETH_CARD_TEXT(card, 4, "qethstop"); 860 netif_tx_disable(dev); 861 if (card->state == CARD_STATE_UP) { 862 card->state = CARD_STATE_SOFTSETUP; 863 napi_disable(&card->napi); 864 } 865 return 0; 866 } 867 868 static const struct device_type qeth_l2_devtype = { 869 .name = "qeth_layer2", 870 .groups = qeth_l2_attr_groups, 871 }; 872 873 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 874 { 875 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 876 int rc; 877 878 if (gdev->dev.type == &qeth_generic_devtype) { 879 rc = qeth_l2_create_device_attributes(&gdev->dev); 880 if (rc) 881 return rc; 882 } 883 INIT_LIST_HEAD(&card->vid_list); 884 hash_init(card->mac_htable); 885 card->options.layer2 = 1; 886 card->info.hwtrap = 0; 887 qeth_l2_vnicc_set_defaults(card); 888 return 0; 889 } 890 891 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 892 { 893 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 894 895 if (cgdev->dev.type == &qeth_generic_devtype) 896 qeth_l2_remove_device_attributes(&cgdev->dev); 897 qeth_set_allowed_threads(card, 0, 1); 898 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 899 900 if (cgdev->state == CCWGROUP_ONLINE) 901 qeth_l2_set_offline(cgdev); 902 903 if (card->dev) { 904 unregister_netdev(card->dev); 905 free_netdev(card->dev); 906 card->dev = NULL; 907 } 908 return; 909 } 910 911 static const struct ethtool_ops qeth_l2_ethtool_ops = { 912 .get_link = ethtool_op_get_link, 913 .get_strings = qeth_core_get_strings, 914 .get_ethtool_stats = qeth_core_get_ethtool_stats, 915 .get_sset_count = qeth_core_get_sset_count, 916 .get_drvinfo = qeth_core_get_drvinfo, 917 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 918 }; 919 920 static const struct ethtool_ops qeth_l2_osn_ops = { 921 .get_strings = qeth_core_get_strings, 922 .get_ethtool_stats = qeth_core_get_ethtool_stats, 923 .get_sset_count = qeth_core_get_sset_count, 924 .get_drvinfo = qeth_core_get_drvinfo, 925 }; 926 927 static const struct net_device_ops qeth_l2_netdev_ops = { 928 .ndo_open = qeth_l2_open, 929 .ndo_stop = qeth_l2_stop, 930 .ndo_get_stats = qeth_get_stats, 931 .ndo_start_xmit = qeth_l2_hard_start_xmit, 932 .ndo_features_check = qeth_features_check, 933 .ndo_validate_addr = eth_validate_addr, 934 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 935 .ndo_do_ioctl = qeth_do_ioctl, 936 .ndo_set_mac_address = qeth_l2_set_mac_address, 937 .ndo_change_mtu = qeth_change_mtu, 938 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 939 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 940 .ndo_tx_timeout = qeth_tx_timeout, 941 .ndo_fix_features = qeth_fix_features, 942 .ndo_set_features = qeth_set_features 943 }; 944 945 static int qeth_l2_setup_netdev(struct qeth_card *card) 946 { 947 switch (card->info.type) { 948 case QETH_CARD_TYPE_IQD: 949 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 950 ether_setup); 951 break; 952 case QETH_CARD_TYPE_OSN: 953 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 954 ether_setup); 955 break; 956 default: 957 card->dev = alloc_etherdev(0); 958 } 959 960 if (!card->dev) 961 return -ENODEV; 962 963 card->dev->ml_priv = card; 964 card->dev->priv_flags |= IFF_UNICAST_FLT; 965 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 966 card->dev->mtu = card->info.initial_mtu; 967 card->dev->min_mtu = 64; 968 card->dev->max_mtu = ETH_MAX_MTU; 969 card->dev->dev_port = card->info.portno; 970 card->dev->netdev_ops = &qeth_l2_netdev_ops; 971 if (card->info.type == QETH_CARD_TYPE_OSN) { 972 card->dev->ethtool_ops = &qeth_l2_osn_ops; 973 card->dev->flags |= IFF_NOARP; 974 } else { 975 card->dev->ethtool_ops = &qeth_l2_ethtool_ops; 976 } 977 978 if (card->info.type == QETH_CARD_TYPE_OSM) 979 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 980 else 981 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 982 983 if (card->info.type != QETH_CARD_TYPE_OSN && 984 card->info.type != QETH_CARD_TYPE_IQD) { 985 card->dev->priv_flags &= ~IFF_TX_SKB_SHARING; 986 card->dev->needed_headroom = sizeof(struct qeth_hdr); 987 card->dev->hw_features |= NETIF_F_SG; 988 card->dev->vlan_features |= NETIF_F_SG; 989 } 990 991 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 992 card->dev->features |= NETIF_F_SG; 993 /* OSA 3S and earlier has no RX/TX support */ 994 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 995 card->dev->hw_features |= NETIF_F_IP_CSUM; 996 card->dev->vlan_features |= NETIF_F_IP_CSUM; 997 } 998 } 999 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 1000 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 1001 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 1002 } 1003 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) || 1004 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) { 1005 card->dev->hw_features |= NETIF_F_RXCSUM; 1006 card->dev->vlan_features |= NETIF_F_RXCSUM; 1007 } 1008 1009 card->info.broadcast_capable = 1; 1010 qeth_l2_request_initial_mac(card); 1011 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1012 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 1013 netif_carrier_off(card->dev); 1014 return register_netdev(card->dev); 1015 } 1016 1017 static int qeth_l2_start_ipassists(struct qeth_card *card) 1018 { 1019 /* configure isolation level */ 1020 if (qeth_set_access_ctrl_online(card, 0)) 1021 return -ENODEV; 1022 return 0; 1023 } 1024 1025 static void qeth_l2_trace_features(struct qeth_card *card) 1026 { 1027 /* Set BridgePort features */ 1028 QETH_CARD_TEXT(card, 2, "featuSBP"); 1029 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 1030 sizeof(card->options.sbp.supported_funcs)); 1031 /* VNIC Characteristics features */ 1032 QETH_CARD_TEXT(card, 2, "feaVNICC"); 1033 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 1034 sizeof(card->options.vnicc.sup_chars)); 1035 } 1036 1037 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1038 { 1039 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1040 int rc = 0; 1041 enum qeth_card_states recover_flag; 1042 1043 mutex_lock(&card->discipline_mutex); 1044 mutex_lock(&card->conf_mutex); 1045 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1046 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1047 1048 recover_flag = card->state; 1049 rc = qeth_core_hardsetup_card(card); 1050 if (rc) { 1051 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1052 rc = -ENODEV; 1053 goto out_remove; 1054 } 1055 qeth_bridgeport_query_support(card); 1056 if (card->options.sbp.supported_funcs) 1057 dev_info(&card->gdev->dev, 1058 "The device represents a Bridge Capable Port\n"); 1059 1060 if (!card->dev && qeth_l2_setup_netdev(card)) { 1061 rc = -ENODEV; 1062 goto out_remove; 1063 } 1064 1065 if (card->info.type != QETH_CARD_TYPE_OSN && 1066 !qeth_l2_send_setmac(card, card->dev->dev_addr)) 1067 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 1068 1069 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1070 if (card->info.hwtrap && 1071 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1072 card->info.hwtrap = 0; 1073 } else 1074 card->info.hwtrap = 0; 1075 1076 /* for the rx_bcast characteristic, init VNICC after setmac */ 1077 qeth_l2_vnicc_init(card); 1078 1079 qeth_trace_features(card); 1080 qeth_l2_trace_features(card); 1081 1082 qeth_l2_setup_bridgeport_attrs(card); 1083 1084 card->state = CARD_STATE_HARDSETUP; 1085 qeth_print_status_message(card); 1086 1087 /* softsetup */ 1088 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1089 1090 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1091 (card->info.type == QETH_CARD_TYPE_OSX)) { 1092 rc = qeth_l2_start_ipassists(card); 1093 if (rc) 1094 goto out_remove; 1095 } 1096 1097 if (card->info.type != QETH_CARD_TYPE_OSN) 1098 qeth_l2_process_vlans(card); 1099 1100 netif_tx_disable(card->dev); 1101 1102 rc = qeth_init_qdio_queues(card); 1103 if (rc) { 1104 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1105 rc = -ENODEV; 1106 goto out_remove; 1107 } 1108 card->state = CARD_STATE_SOFTSETUP; 1109 if (card->lan_online) 1110 netif_carrier_on(card->dev); 1111 else 1112 netif_carrier_off(card->dev); 1113 1114 qeth_set_allowed_threads(card, 0xffffffff, 0); 1115 1116 qeth_enable_hw_features(card->dev); 1117 if (recover_flag == CARD_STATE_RECOVER) { 1118 if (recovery_mode && 1119 card->info.type != QETH_CARD_TYPE_OSN) { 1120 __qeth_l2_open(card->dev); 1121 qeth_l2_set_rx_mode(card->dev); 1122 } else { 1123 rtnl_lock(); 1124 dev_open(card->dev); 1125 rtnl_unlock(); 1126 } 1127 } 1128 /* let user_space know that device is online */ 1129 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1130 mutex_unlock(&card->conf_mutex); 1131 mutex_unlock(&card->discipline_mutex); 1132 return 0; 1133 1134 out_remove: 1135 qeth_l2_stop_card(card, 0); 1136 ccw_device_set_offline(CARD_DDEV(card)); 1137 ccw_device_set_offline(CARD_WDEV(card)); 1138 ccw_device_set_offline(CARD_RDEV(card)); 1139 qdio_free(CARD_DDEV(card)); 1140 if (recover_flag == CARD_STATE_RECOVER) 1141 card->state = CARD_STATE_RECOVER; 1142 else 1143 card->state = CARD_STATE_DOWN; 1144 mutex_unlock(&card->conf_mutex); 1145 mutex_unlock(&card->discipline_mutex); 1146 return rc; 1147 } 1148 1149 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1150 { 1151 return __qeth_l2_set_online(gdev, 0); 1152 } 1153 1154 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1155 int recovery_mode) 1156 { 1157 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1158 int rc = 0, rc2 = 0, rc3 = 0; 1159 enum qeth_card_states recover_flag; 1160 1161 mutex_lock(&card->discipline_mutex); 1162 mutex_lock(&card->conf_mutex); 1163 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1164 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1165 1166 if (card->dev && netif_carrier_ok(card->dev)) 1167 netif_carrier_off(card->dev); 1168 recover_flag = card->state; 1169 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1170 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1171 card->info.hwtrap = 1; 1172 } 1173 qeth_l2_stop_card(card, recovery_mode); 1174 rc = ccw_device_set_offline(CARD_DDEV(card)); 1175 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1176 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1177 if (!rc) 1178 rc = (rc2) ? rc2 : rc3; 1179 if (rc) 1180 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1181 qdio_free(CARD_DDEV(card)); 1182 if (recover_flag == CARD_STATE_UP) 1183 card->state = CARD_STATE_RECOVER; 1184 /* let user_space know that device is offline */ 1185 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1186 mutex_unlock(&card->conf_mutex); 1187 mutex_unlock(&card->discipline_mutex); 1188 return 0; 1189 } 1190 1191 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1192 { 1193 return __qeth_l2_set_offline(cgdev, 0); 1194 } 1195 1196 static int qeth_l2_recover(void *ptr) 1197 { 1198 struct qeth_card *card; 1199 int rc = 0; 1200 1201 card = (struct qeth_card *) ptr; 1202 QETH_CARD_TEXT(card, 2, "recover1"); 1203 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1204 return 0; 1205 QETH_CARD_TEXT(card, 2, "recover2"); 1206 dev_warn(&card->gdev->dev, 1207 "A recovery process has been started for the device\n"); 1208 qeth_set_recovery_task(card); 1209 __qeth_l2_set_offline(card->gdev, 1); 1210 rc = __qeth_l2_set_online(card->gdev, 1); 1211 if (!rc) 1212 dev_info(&card->gdev->dev, 1213 "Device successfully recovered!\n"); 1214 else { 1215 qeth_close_dev(card); 1216 dev_warn(&card->gdev->dev, "The qeth device driver " 1217 "failed to recover an error on the device\n"); 1218 } 1219 qeth_clear_recovery_task(card); 1220 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1221 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1222 return 0; 1223 } 1224 1225 static int __init qeth_l2_init(void) 1226 { 1227 pr_info("register layer 2 discipline\n"); 1228 return 0; 1229 } 1230 1231 static void __exit qeth_l2_exit(void) 1232 { 1233 pr_info("unregister layer 2 discipline\n"); 1234 } 1235 1236 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1237 { 1238 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1239 1240 if (card->dev) 1241 netif_device_detach(card->dev); 1242 qeth_set_allowed_threads(card, 0, 1); 1243 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1244 if (gdev->state == CCWGROUP_OFFLINE) 1245 return 0; 1246 if (card->state == CARD_STATE_UP) { 1247 if (card->info.hwtrap) 1248 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1249 __qeth_l2_set_offline(card->gdev, 1); 1250 } else 1251 __qeth_l2_set_offline(card->gdev, 0); 1252 return 0; 1253 } 1254 1255 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1256 { 1257 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1258 int rc = 0; 1259 1260 if (gdev->state == CCWGROUP_OFFLINE) 1261 goto out; 1262 1263 if (card->state == CARD_STATE_RECOVER) { 1264 rc = __qeth_l2_set_online(card->gdev, 1); 1265 if (rc) { 1266 rtnl_lock(); 1267 dev_close(card->dev); 1268 rtnl_unlock(); 1269 } 1270 } else 1271 rc = __qeth_l2_set_online(card->gdev, 0); 1272 out: 1273 qeth_set_allowed_threads(card, 0xffffffff, 0); 1274 if (card->dev) 1275 netif_device_attach(card->dev); 1276 if (rc) 1277 dev_warn(&card->gdev->dev, "The qeth device driver " 1278 "failed to recover an error on the device\n"); 1279 return rc; 1280 } 1281 1282 /* Returns zero if the command is successfully "consumed" */ 1283 static int qeth_l2_control_event(struct qeth_card *card, 1284 struct qeth_ipa_cmd *cmd) 1285 { 1286 switch (cmd->hdr.command) { 1287 case IPA_CMD_SETBRIDGEPORT_OSA: 1288 case IPA_CMD_SETBRIDGEPORT_IQD: 1289 if (cmd->data.sbp.hdr.command_code == 1290 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1291 qeth_bridge_state_change(card, cmd); 1292 return 0; 1293 } else 1294 return 1; 1295 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1296 qeth_bridge_host_event(card, cmd); 1297 return 0; 1298 default: 1299 return 1; 1300 } 1301 } 1302 1303 struct qeth_discipline qeth_l2_discipline = { 1304 .devtype = &qeth_l2_devtype, 1305 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1306 .recover = qeth_l2_recover, 1307 .setup = qeth_l2_probe_device, 1308 .remove = qeth_l2_remove_device, 1309 .set_online = qeth_l2_set_online, 1310 .set_offline = qeth_l2_set_offline, 1311 .freeze = qeth_l2_pm_suspend, 1312 .thaw = qeth_l2_pm_resume, 1313 .restore = qeth_l2_pm_resume, 1314 .do_ioctl = NULL, 1315 .control_event_handler = qeth_l2_control_event, 1316 }; 1317 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1318 1319 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1320 struct qeth_cmd_buffer *iob) 1321 { 1322 unsigned long flags; 1323 int rc = 0; 1324 1325 QETH_CARD_TEXT(card, 5, "osndctrd"); 1326 1327 wait_event(card->wait_q, 1328 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1329 qeth_prepare_control_data(card, len, iob); 1330 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1331 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1332 rc = ccw_device_start_timeout(CARD_WDEV(card), &card->write.ccw, 1333 (addr_t) iob, 0, 0, QETH_IPA_TIMEOUT); 1334 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1335 if (rc) { 1336 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1337 "ccw_device_start rc = %i\n", rc); 1338 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1339 qeth_release_buffer(iob->channel, iob); 1340 atomic_set(&card->write.irq_pending, 0); 1341 wake_up(&card->wait_q); 1342 } 1343 return rc; 1344 } 1345 1346 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1347 struct qeth_cmd_buffer *iob, int data_len) 1348 { 1349 u16 s1, s2; 1350 1351 QETH_CARD_TEXT(card, 4, "osndipa"); 1352 1353 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1354 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1355 s2 = (u16)data_len; 1356 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1357 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1358 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1359 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1360 return qeth_osn_send_control_data(card, s1, iob); 1361 } 1362 1363 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1364 { 1365 struct qeth_cmd_buffer *iob; 1366 struct qeth_card *card; 1367 1368 if (!dev) 1369 return -ENODEV; 1370 card = dev->ml_priv; 1371 if (!card) 1372 return -ENODEV; 1373 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1374 if (!qeth_card_hw_is_reachable(card)) 1375 return -ENODEV; 1376 iob = qeth_wait_for_buffer(&card->write); 1377 memcpy(__ipa_cmd(iob), data, data_len); 1378 return qeth_osn_send_ipa_cmd(card, iob, data_len); 1379 } 1380 EXPORT_SYMBOL(qeth_osn_assist); 1381 1382 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1383 int (*assist_cb)(struct net_device *, void *), 1384 int (*data_cb)(struct sk_buff *)) 1385 { 1386 struct qeth_card *card; 1387 1388 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1389 if (*dev == NULL) 1390 return -ENODEV; 1391 card = (*dev)->ml_priv; 1392 if (!card) 1393 return -ENODEV; 1394 QETH_CARD_TEXT(card, 2, "osnreg"); 1395 if ((assist_cb == NULL) || (data_cb == NULL)) 1396 return -EINVAL; 1397 card->osn_info.assist_cb = assist_cb; 1398 card->osn_info.data_cb = data_cb; 1399 return 0; 1400 } 1401 EXPORT_SYMBOL(qeth_osn_register); 1402 1403 void qeth_osn_deregister(struct net_device *dev) 1404 { 1405 struct qeth_card *card; 1406 1407 if (!dev) 1408 return; 1409 card = dev->ml_priv; 1410 if (!card) 1411 return; 1412 QETH_CARD_TEXT(card, 2, "osndereg"); 1413 card->osn_info.assist_cb = NULL; 1414 card->osn_info.data_cb = NULL; 1415 return; 1416 } 1417 EXPORT_SYMBOL(qeth_osn_deregister); 1418 1419 /* SETBRIDGEPORT support, async notifications */ 1420 1421 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1422 1423 /** 1424 * qeth_bridge_emit_host_event() - bridgeport address change notification 1425 * @card: qeth_card structure pointer, for udev events. 1426 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1427 * and reset token and addr_lnid are unused and may be NULL. 1428 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1429 * object, 0 - addition of an object. 1430 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1431 * @token: "network token" structure identifying physical address of the port. 1432 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1433 * 1434 * This function is called when registrations and deregistrations are 1435 * reported by the hardware, and also when notifications are enabled - 1436 * for all currently registered addresses. 1437 */ 1438 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1439 enum qeth_an_event_type evtype, 1440 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1441 { 1442 char str[7][32]; 1443 char *env[8]; 1444 int i = 0; 1445 1446 switch (evtype) { 1447 case anev_reg_unreg: 1448 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1449 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1450 ? "deregister" : "register"); 1451 env[i] = str[i]; i++; 1452 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1453 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1454 addr_lnid->lnid); 1455 env[i] = str[i]; i++; 1456 } 1457 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1458 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1459 addr_lnid->mac); 1460 env[i] = str[i]; i++; 1461 } 1462 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1463 token->cssid, token->ssid, token->devnum); 1464 env[i] = str[i]; i++; 1465 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1466 env[i] = str[i]; i++; 1467 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1468 token->chpid); 1469 env[i] = str[i]; i++; 1470 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1471 env[i] = str[i]; i++; 1472 break; 1473 case anev_abort: 1474 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1475 env[i] = str[i]; i++; 1476 break; 1477 case anev_reset: 1478 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1479 env[i] = str[i]; i++; 1480 break; 1481 } 1482 env[i] = NULL; 1483 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1484 } 1485 1486 struct qeth_bridge_state_data { 1487 struct work_struct worker; 1488 struct qeth_card *card; 1489 struct qeth_sbp_state_change qports; 1490 }; 1491 1492 static void qeth_bridge_state_change_worker(struct work_struct *work) 1493 { 1494 struct qeth_bridge_state_data *data = 1495 container_of(work, struct qeth_bridge_state_data, worker); 1496 /* We are only interested in the first entry - local port */ 1497 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1498 char env_locrem[32]; 1499 char env_role[32]; 1500 char env_state[32]; 1501 char *env[] = { 1502 env_locrem, 1503 env_role, 1504 env_state, 1505 NULL 1506 }; 1507 1508 /* Role should not change by itself, but if it did, */ 1509 /* information from the hardware is authoritative. */ 1510 mutex_lock(&data->card->conf_mutex); 1511 data->card->options.sbp.role = entry->role; 1512 mutex_unlock(&data->card->conf_mutex); 1513 1514 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1515 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1516 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1517 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1518 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1519 "<INVALID>"); 1520 snprintf(env_state, sizeof(env_state), "STATE=%s", 1521 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1522 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1523 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1524 "<INVALID>"); 1525 kobject_uevent_env(&data->card->gdev->dev.kobj, 1526 KOBJ_CHANGE, env); 1527 kfree(data); 1528 } 1529 1530 static void qeth_bridge_state_change(struct qeth_card *card, 1531 struct qeth_ipa_cmd *cmd) 1532 { 1533 struct qeth_sbp_state_change *qports = 1534 &cmd->data.sbp.data.state_change; 1535 struct qeth_bridge_state_data *data; 1536 int extrasize; 1537 1538 QETH_CARD_TEXT(card, 2, "brstchng"); 1539 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1540 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1541 return; 1542 } 1543 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1544 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1545 GFP_ATOMIC); 1546 if (!data) { 1547 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1548 return; 1549 } 1550 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1551 data->card = card; 1552 memcpy(&data->qports, qports, 1553 sizeof(struct qeth_sbp_state_change) + extrasize); 1554 queue_work(qeth_wq, &data->worker); 1555 } 1556 1557 struct qeth_bridge_host_data { 1558 struct work_struct worker; 1559 struct qeth_card *card; 1560 struct qeth_ipacmd_addr_change hostevs; 1561 }; 1562 1563 static void qeth_bridge_host_event_worker(struct work_struct *work) 1564 { 1565 struct qeth_bridge_host_data *data = 1566 container_of(work, struct qeth_bridge_host_data, worker); 1567 int i; 1568 1569 if (data->hostevs.lost_event_mask) { 1570 dev_info(&data->card->gdev->dev, 1571 "Address notification from the Bridge Port stopped %s (%s)\n", 1572 data->card->dev->name, 1573 (data->hostevs.lost_event_mask == 0x01) 1574 ? "Overflow" 1575 : (data->hostevs.lost_event_mask == 0x02) 1576 ? "Bridge port state change" 1577 : "Unknown reason"); 1578 mutex_lock(&data->card->conf_mutex); 1579 data->card->options.sbp.hostnotification = 0; 1580 mutex_unlock(&data->card->conf_mutex); 1581 qeth_bridge_emit_host_event(data->card, anev_abort, 1582 0, NULL, NULL); 1583 } else 1584 for (i = 0; i < data->hostevs.num_entries; i++) { 1585 struct qeth_ipacmd_addr_change_entry *entry = 1586 &data->hostevs.entry[i]; 1587 qeth_bridge_emit_host_event(data->card, 1588 anev_reg_unreg, 1589 entry->change_code, 1590 &entry->token, &entry->addr_lnid); 1591 } 1592 kfree(data); 1593 } 1594 1595 static void qeth_bridge_host_event(struct qeth_card *card, 1596 struct qeth_ipa_cmd *cmd) 1597 { 1598 struct qeth_ipacmd_addr_change *hostevs = 1599 &cmd->data.addrchange; 1600 struct qeth_bridge_host_data *data; 1601 int extrasize; 1602 1603 QETH_CARD_TEXT(card, 2, "brhostev"); 1604 if (cmd->hdr.return_code != 0x0000) { 1605 if (cmd->hdr.return_code == 0x0010) { 1606 if (hostevs->lost_event_mask == 0x00) 1607 hostevs->lost_event_mask = 0xff; 1608 } else { 1609 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1610 cmd->hdr.return_code); 1611 return; 1612 } 1613 } 1614 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1615 hostevs->num_entries; 1616 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1617 GFP_ATOMIC); 1618 if (!data) { 1619 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1620 return; 1621 } 1622 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1623 data->card = card; 1624 memcpy(&data->hostevs, hostevs, 1625 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1626 queue_work(qeth_wq, &data->worker); 1627 } 1628 1629 /* SETBRIDGEPORT support; sending commands */ 1630 1631 struct _qeth_sbp_cbctl { 1632 u16 ipa_rc; 1633 u16 cmd_rc; 1634 union { 1635 u32 supported; 1636 struct { 1637 enum qeth_sbp_roles *role; 1638 enum qeth_sbp_states *state; 1639 } qports; 1640 } data; 1641 }; 1642 1643 /** 1644 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1645 * @card: qeth_card structure pointer, for debug messages. 1646 * @cbctl: state structure with hardware return codes. 1647 * @setcmd: IPA command code 1648 * 1649 * Returns negative errno-compatible error indication or 0 on success. 1650 */ 1651 static int qeth_bridgeport_makerc(struct qeth_card *card, 1652 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1653 { 1654 int rc; 1655 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1656 1657 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1658 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1659 switch (cbctl->cmd_rc) { 1660 case IPA_RC_SUCCESS: 1661 rc = 0; 1662 break; 1663 case IPA_RC_L2_UNSUPPORTED_CMD: 1664 case IPA_RC_UNSUPPORTED_COMMAND: 1665 rc = -EOPNOTSUPP; 1666 break; 1667 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1668 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1669 rc = -ENODEV; /* maybe not the best code here? */ 1670 dev_err(&card->gdev->dev, 1671 "The device is not configured as a Bridge Port\n"); 1672 break; 1673 case IPA_RC_SBP_OSA_OS_MISMATCH: 1674 case IPA_RC_SBP_IQD_OS_MISMATCH: 1675 rc = -EPERM; 1676 dev_err(&card->gdev->dev, 1677 "A Bridge Port is already configured by a different operating system\n"); 1678 break; 1679 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1680 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1681 switch (setcmd) { 1682 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1683 rc = -EEXIST; 1684 dev_err(&card->gdev->dev, 1685 "The LAN already has a primary Bridge Port\n"); 1686 break; 1687 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1688 rc = -EBUSY; 1689 dev_err(&card->gdev->dev, 1690 "The device is already a primary Bridge Port\n"); 1691 break; 1692 default: 1693 rc = -EIO; 1694 } 1695 break; 1696 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1697 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1698 rc = -EBUSY; 1699 dev_err(&card->gdev->dev, 1700 "The device is already a secondary Bridge Port\n"); 1701 break; 1702 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1703 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1704 rc = -EEXIST; 1705 dev_err(&card->gdev->dev, 1706 "The LAN cannot have more secondary Bridge Ports\n"); 1707 break; 1708 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1709 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1710 rc = -EBUSY; 1711 dev_err(&card->gdev->dev, 1712 "The device is already a primary Bridge Port\n"); 1713 break; 1714 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1715 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1716 rc = -EACCES; 1717 dev_err(&card->gdev->dev, 1718 "The device is not authorized to be a Bridge Port\n"); 1719 break; 1720 default: 1721 rc = -EIO; 1722 } 1723 else 1724 switch (cbctl->ipa_rc) { 1725 case IPA_RC_NOTSUPP: 1726 rc = -EOPNOTSUPP; 1727 break; 1728 case IPA_RC_UNSUPPORTED_COMMAND: 1729 rc = -EOPNOTSUPP; 1730 break; 1731 default: 1732 rc = -EIO; 1733 } 1734 1735 if (rc) { 1736 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1737 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1738 } 1739 return rc; 1740 } 1741 1742 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1743 enum qeth_ipa_sbp_cmd sbp_cmd, 1744 unsigned int cmd_length) 1745 { 1746 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ? 1747 IPA_CMD_SETBRIDGEPORT_IQD : 1748 IPA_CMD_SETBRIDGEPORT_OSA; 1749 struct qeth_cmd_buffer *iob; 1750 struct qeth_ipa_cmd *cmd; 1751 1752 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0); 1753 if (!iob) 1754 return iob; 1755 cmd = __ipa_cmd(iob); 1756 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1757 cmd_length; 1758 cmd->data.sbp.hdr.command_code = sbp_cmd; 1759 cmd->data.sbp.hdr.used_total = 1; 1760 cmd->data.sbp.hdr.seq_no = 1; 1761 return iob; 1762 } 1763 1764 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1765 struct qeth_reply *reply, unsigned long data) 1766 { 1767 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1768 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1769 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1770 cbctl->ipa_rc = cmd->hdr.return_code; 1771 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1772 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1773 cbctl->data.supported = 1774 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1775 } else { 1776 cbctl->data.supported = 0; 1777 } 1778 return 0; 1779 } 1780 1781 /** 1782 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1783 * @card: qeth_card structure pointer. 1784 * 1785 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1786 * strucutre: card->options.sbp.supported_funcs. 1787 */ 1788 static void qeth_bridgeport_query_support(struct qeth_card *card) 1789 { 1790 struct qeth_cmd_buffer *iob; 1791 struct _qeth_sbp_cbctl cbctl; 1792 1793 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1794 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1795 sizeof(struct qeth_sbp_query_cmds_supp)); 1796 if (!iob) 1797 return; 1798 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1799 (void *)&cbctl) || 1800 qeth_bridgeport_makerc(card, &cbctl, 1801 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1802 /* non-zero makerc signifies failure, and produce messages */ 1803 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1804 return; 1805 } 1806 card->options.sbp.supported_funcs = cbctl.data.supported; 1807 } 1808 1809 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1810 struct qeth_reply *reply, unsigned long data) 1811 { 1812 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1813 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1814 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1815 1816 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1817 cbctl->ipa_rc = cmd->hdr.return_code; 1818 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1819 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1820 return 0; 1821 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1822 cbctl->cmd_rc = 0xffff; 1823 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1824 return 0; 1825 } 1826 /* first entry contains the state of the local port */ 1827 if (qports->num_entries > 0) { 1828 if (cbctl->data.qports.role) 1829 *cbctl->data.qports.role = qports->entry[0].role; 1830 if (cbctl->data.qports.state) 1831 *cbctl->data.qports.state = qports->entry[0].state; 1832 } 1833 return 0; 1834 } 1835 1836 /** 1837 * qeth_bridgeport_query_ports() - query local bridgeport status. 1838 * @card: qeth_card structure pointer. 1839 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1840 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1841 * 1842 * Returns negative errno-compatible error indication or 0 on success. 1843 * 1844 * 'role' and 'state' are not updated in case of hardware operation failure. 1845 */ 1846 int qeth_bridgeport_query_ports(struct qeth_card *card, 1847 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1848 { 1849 int rc = 0; 1850 struct qeth_cmd_buffer *iob; 1851 struct _qeth_sbp_cbctl cbctl = { 1852 .data = { 1853 .qports = { 1854 .role = role, 1855 .state = state, 1856 }, 1857 }, 1858 }; 1859 1860 QETH_CARD_TEXT(card, 2, "brqports"); 1861 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1862 return -EOPNOTSUPP; 1863 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1864 if (!iob) 1865 return -ENOMEM; 1866 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1867 (void *)&cbctl); 1868 if (rc < 0) 1869 return rc; 1870 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1871 } 1872 1873 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1874 struct qeth_reply *reply, unsigned long data) 1875 { 1876 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1877 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1878 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1879 cbctl->ipa_rc = cmd->hdr.return_code; 1880 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1881 return 0; 1882 } 1883 1884 /** 1885 * qeth_bridgeport_setrole() - Assign primary role to the port. 1886 * @card: qeth_card structure pointer. 1887 * @role: Role to assign. 1888 * 1889 * Returns negative errno-compatible error indication or 0 on success. 1890 */ 1891 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1892 { 1893 int rc = 0; 1894 int cmdlength; 1895 struct qeth_cmd_buffer *iob; 1896 struct _qeth_sbp_cbctl cbctl; 1897 enum qeth_ipa_sbp_cmd setcmd; 1898 1899 QETH_CARD_TEXT(card, 2, "brsetrol"); 1900 switch (role) { 1901 case QETH_SBP_ROLE_NONE: 1902 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1903 cmdlength = sizeof(struct qeth_sbp_reset_role); 1904 break; 1905 case QETH_SBP_ROLE_PRIMARY: 1906 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1907 cmdlength = sizeof(struct qeth_sbp_set_primary); 1908 break; 1909 case QETH_SBP_ROLE_SECONDARY: 1910 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1911 cmdlength = sizeof(struct qeth_sbp_set_secondary); 1912 break; 1913 default: 1914 return -EINVAL; 1915 } 1916 if (!(card->options.sbp.supported_funcs & setcmd)) 1917 return -EOPNOTSUPP; 1918 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1919 if (!iob) 1920 return -ENOMEM; 1921 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 1922 (void *)&cbctl); 1923 if (rc < 0) 1924 return rc; 1925 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 1926 } 1927 1928 /** 1929 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1930 * @card: qeth_card structure pointer, for debug messages. 1931 * 1932 * Returns negative errno-compatible error indication or 0 on success. 1933 */ 1934 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1935 { 1936 int rc; 1937 1938 if (pnso_rc == 0) 1939 switch (response) { 1940 case 0x0001: 1941 rc = 0; 1942 break; 1943 case 0x0004: 1944 case 0x0100: 1945 case 0x0106: 1946 rc = -EOPNOTSUPP; 1947 dev_err(&card->gdev->dev, 1948 "Setting address notification failed\n"); 1949 break; 1950 case 0x0107: 1951 rc = -EAGAIN; 1952 break; 1953 default: 1954 rc = -EIO; 1955 } 1956 else 1957 rc = -EIO; 1958 1959 if (rc) { 1960 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1961 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1962 } 1963 return rc; 1964 } 1965 1966 static void qeth_bridgeport_an_set_cb(void *priv, 1967 enum qdio_brinfo_entry_type type, void *entry) 1968 { 1969 struct qeth_card *card = (struct qeth_card *)priv; 1970 struct qdio_brinfo_entry_l2 *l2entry; 1971 u8 code; 1972 1973 if (type != l2_addr_lnid) { 1974 WARN_ON_ONCE(1); 1975 return; 1976 } 1977 1978 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1979 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1980 if (l2entry->addr_lnid.lnid) 1981 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1982 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1983 (struct net_if_token *)&l2entry->nit, 1984 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1985 } 1986 1987 /** 1988 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1989 * @card: qeth_card structure pointer. 1990 * @enable: 0 - disable, non-zero - enable notifications 1991 * 1992 * Returns negative errno-compatible error indication or 0 on success. 1993 * 1994 * On enable, emits a series of address notifications udev events for all 1995 * currently registered hosts. 1996 */ 1997 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 1998 { 1999 int rc; 2000 u16 response; 2001 struct ccw_device *ddev; 2002 struct subchannel_id schid; 2003 2004 if (!card) 2005 return -EINVAL; 2006 if (!card->options.sbp.supported_funcs) 2007 return -EOPNOTSUPP; 2008 ddev = CARD_DDEV(card); 2009 ccw_device_get_schid(ddev, &schid); 2010 2011 if (enable) { 2012 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2013 rc = qdio_pnso_brinfo(schid, 1, &response, 2014 qeth_bridgeport_an_set_cb, card); 2015 } else 2016 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2017 return qeth_anset_makerc(card, rc, response); 2018 } 2019 2020 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 2021 { 2022 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 2023 card->options.sbp.hostnotification); 2024 } 2025 2026 /* VNIC Characteristics support */ 2027 2028 /* handle VNICC IPA command return codes; convert to error codes */ 2029 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc) 2030 { 2031 int rc; 2032 2033 switch (ipa_rc) { 2034 case IPA_RC_SUCCESS: 2035 return ipa_rc; 2036 case IPA_RC_L2_UNSUPPORTED_CMD: 2037 case IPA_RC_NOTSUPP: 2038 rc = -EOPNOTSUPP; 2039 break; 2040 case IPA_RC_VNICC_OOSEQ: 2041 rc = -EALREADY; 2042 break; 2043 case IPA_RC_VNICC_VNICBP: 2044 rc = -EBUSY; 2045 break; 2046 case IPA_RC_L2_ADDR_TABLE_FULL: 2047 rc = -ENOSPC; 2048 break; 2049 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 2050 rc = -EACCES; 2051 break; 2052 default: 2053 rc = -EIO; 2054 } 2055 2056 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 2057 return rc; 2058 } 2059 2060 /* generic VNICC request call back control */ 2061 struct _qeth_l2_vnicc_request_cbctl { 2062 u32 sub_cmd; 2063 struct { 2064 u32 vnic_char; 2065 u32 timeout; 2066 } param; 2067 struct { 2068 union{ 2069 u32 *sup_cmds; 2070 u32 *timeout; 2071 }; 2072 } result; 2073 }; 2074 2075 /* generic VNICC request call back */ 2076 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 2077 struct qeth_reply *reply, 2078 unsigned long data) 2079 { 2080 struct _qeth_l2_vnicc_request_cbctl *cbctl = 2081 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 2082 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2083 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 2084 2085 QETH_CARD_TEXT(card, 2, "vniccrcb"); 2086 if (cmd->hdr.return_code) 2087 return 0; 2088 /* return results to caller */ 2089 card->options.vnicc.sup_chars = rep->hdr.sup; 2090 card->options.vnicc.cur_chars = rep->hdr.cur; 2091 2092 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS) 2093 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds; 2094 2095 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT) 2096 *cbctl->result.timeout = rep->getset_timeout.timeout; 2097 2098 return 0; 2099 } 2100 2101 /* generic VNICC request */ 2102 static int qeth_l2_vnicc_request(struct qeth_card *card, 2103 struct _qeth_l2_vnicc_request_cbctl *cbctl) 2104 { 2105 struct qeth_ipacmd_vnicc *req; 2106 struct qeth_cmd_buffer *iob; 2107 struct qeth_ipa_cmd *cmd; 2108 int rc; 2109 2110 QETH_CARD_TEXT(card, 2, "vniccreq"); 2111 2112 /* get new buffer for request */ 2113 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0); 2114 if (!iob) 2115 return -ENOMEM; 2116 2117 /* create header for request */ 2118 cmd = __ipa_cmd(iob); 2119 req = &cmd->data.vnicc; 2120 2121 /* create sub command header for request */ 2122 req->sub_hdr.data_length = sizeof(req->sub_hdr); 2123 req->sub_hdr.sub_command = cbctl->sub_cmd; 2124 2125 /* create sub command specific request fields */ 2126 switch (cbctl->sub_cmd) { 2127 case IPA_VNICC_QUERY_CHARS: 2128 break; 2129 case IPA_VNICC_QUERY_CMDS: 2130 req->sub_hdr.data_length += sizeof(req->query_cmds); 2131 req->query_cmds.vnic_char = cbctl->param.vnic_char; 2132 break; 2133 case IPA_VNICC_ENABLE: 2134 case IPA_VNICC_DISABLE: 2135 req->sub_hdr.data_length += sizeof(req->set_char); 2136 req->set_char.vnic_char = cbctl->param.vnic_char; 2137 break; 2138 case IPA_VNICC_SET_TIMEOUT: 2139 req->getset_timeout.timeout = cbctl->param.timeout; 2140 /* fallthrough */ 2141 case IPA_VNICC_GET_TIMEOUT: 2142 req->sub_hdr.data_length += sizeof(req->getset_timeout); 2143 req->getset_timeout.vnic_char = cbctl->param.vnic_char; 2144 break; 2145 default: 2146 qeth_release_buffer(iob->channel, iob); 2147 return -EOPNOTSUPP; 2148 } 2149 2150 /* send request */ 2151 rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, 2152 (void *) cbctl); 2153 2154 return qeth_l2_vnicc_makerc(card, rc); 2155 } 2156 2157 /* VNICC query VNIC characteristics request */ 2158 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 2159 { 2160 struct _qeth_l2_vnicc_request_cbctl cbctl; 2161 2162 /* prepare callback control */ 2163 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS; 2164 2165 QETH_CARD_TEXT(card, 2, "vniccqch"); 2166 return qeth_l2_vnicc_request(card, &cbctl); 2167 } 2168 2169 /* VNICC query sub commands request */ 2170 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 2171 u32 *sup_cmds) 2172 { 2173 struct _qeth_l2_vnicc_request_cbctl cbctl; 2174 2175 /* prepare callback control */ 2176 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS; 2177 cbctl.param.vnic_char = vnic_char; 2178 cbctl.result.sup_cmds = sup_cmds; 2179 2180 QETH_CARD_TEXT(card, 2, "vniccqcm"); 2181 return qeth_l2_vnicc_request(card, &cbctl); 2182 } 2183 2184 /* VNICC enable/disable characteristic request */ 2185 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 2186 u32 cmd) 2187 { 2188 struct _qeth_l2_vnicc_request_cbctl cbctl; 2189 2190 /* prepare callback control */ 2191 cbctl.sub_cmd = cmd; 2192 cbctl.param.vnic_char = vnic_char; 2193 2194 QETH_CARD_TEXT(card, 2, "vniccedc"); 2195 return qeth_l2_vnicc_request(card, &cbctl); 2196 } 2197 2198 /* VNICC get/set timeout for characteristic request */ 2199 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 2200 u32 cmd, u32 *timeout) 2201 { 2202 struct _qeth_l2_vnicc_request_cbctl cbctl; 2203 2204 /* prepare callback control */ 2205 cbctl.sub_cmd = cmd; 2206 cbctl.param.vnic_char = vnicc; 2207 if (cmd == IPA_VNICC_SET_TIMEOUT) 2208 cbctl.param.timeout = *timeout; 2209 if (cmd == IPA_VNICC_GET_TIMEOUT) 2210 cbctl.result.timeout = timeout; 2211 2212 QETH_CARD_TEXT(card, 2, "vniccgst"); 2213 return qeth_l2_vnicc_request(card, &cbctl); 2214 } 2215 2216 /* set current VNICC flag state; called from sysfs store function */ 2217 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 2218 { 2219 int rc = 0; 2220 u32 cmd; 2221 2222 QETH_CARD_TEXT(card, 2, "vniccsch"); 2223 2224 /* do not change anything if BridgePort is enabled */ 2225 if (qeth_bridgeport_is_in_use(card)) 2226 return -EBUSY; 2227 2228 /* check if characteristic and enable/disable are supported */ 2229 if (!(card->options.vnicc.sup_chars & vnicc) || 2230 !(card->options.vnicc.set_char_sup & vnicc)) 2231 return -EOPNOTSUPP; 2232 2233 /* set enable/disable command and store wanted characteristic */ 2234 if (state) { 2235 cmd = IPA_VNICC_ENABLE; 2236 card->options.vnicc.wanted_chars |= vnicc; 2237 } else { 2238 cmd = IPA_VNICC_DISABLE; 2239 card->options.vnicc.wanted_chars &= ~vnicc; 2240 } 2241 2242 /* do we need to do anything? */ 2243 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 2244 return rc; 2245 2246 /* if card is not ready, simply stop here */ 2247 if (!qeth_card_hw_is_reachable(card)) { 2248 if (state) 2249 card->options.vnicc.cur_chars |= vnicc; 2250 else 2251 card->options.vnicc.cur_chars &= ~vnicc; 2252 return rc; 2253 } 2254 2255 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 2256 if (rc) 2257 card->options.vnicc.wanted_chars = 2258 card->options.vnicc.cur_chars; 2259 else { 2260 /* successful online VNICC change; handle special cases */ 2261 if (state && vnicc == QETH_VNICC_RX_BCAST) 2262 card->options.vnicc.rx_bcast_enabled = true; 2263 if (!state && vnicc == QETH_VNICC_LEARNING) 2264 qeth_l2_vnicc_recover_timeout(card, vnicc, 2265 &card->options.vnicc.learning_timeout); 2266 } 2267 2268 return rc; 2269 } 2270 2271 /* get current VNICC flag state; called from sysfs show function */ 2272 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 2273 { 2274 int rc = 0; 2275 2276 QETH_CARD_TEXT(card, 2, "vniccgch"); 2277 2278 /* do not get anything if BridgePort is enabled */ 2279 if (qeth_bridgeport_is_in_use(card)) 2280 return -EBUSY; 2281 2282 /* check if characteristic is supported */ 2283 if (!(card->options.vnicc.sup_chars & vnicc)) 2284 return -EOPNOTSUPP; 2285 2286 /* if card is ready, query current VNICC state */ 2287 if (qeth_card_hw_is_reachable(card)) 2288 rc = qeth_l2_vnicc_query_chars(card); 2289 2290 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 2291 return rc; 2292 } 2293 2294 /* set VNICC timeout; called from sysfs store function. Currently, only learning 2295 * supports timeout 2296 */ 2297 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 2298 { 2299 int rc = 0; 2300 2301 QETH_CARD_TEXT(card, 2, "vniccsto"); 2302 2303 /* do not change anything if BridgePort is enabled */ 2304 if (qeth_bridgeport_is_in_use(card)) 2305 return -EBUSY; 2306 2307 /* check if characteristic and set_timeout are supported */ 2308 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2309 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2310 return -EOPNOTSUPP; 2311 2312 /* do we need to do anything? */ 2313 if (card->options.vnicc.learning_timeout == timeout) 2314 return rc; 2315 2316 /* if card is not ready, simply store the value internally and return */ 2317 if (!qeth_card_hw_is_reachable(card)) { 2318 card->options.vnicc.learning_timeout = timeout; 2319 return rc; 2320 } 2321 2322 /* send timeout value to card; if successful, store value internally */ 2323 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2324 IPA_VNICC_SET_TIMEOUT, &timeout); 2325 if (!rc) 2326 card->options.vnicc.learning_timeout = timeout; 2327 2328 return rc; 2329 } 2330 2331 /* get current VNICC timeout; called from sysfs show function. Currently, only 2332 * learning supports timeout 2333 */ 2334 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 2335 { 2336 int rc = 0; 2337 2338 QETH_CARD_TEXT(card, 2, "vniccgto"); 2339 2340 /* do not get anything if BridgePort is enabled */ 2341 if (qeth_bridgeport_is_in_use(card)) 2342 return -EBUSY; 2343 2344 /* check if characteristic and get_timeout are supported */ 2345 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2346 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2347 return -EOPNOTSUPP; 2348 /* if card is ready, get timeout. Otherwise, just return stored value */ 2349 *timeout = card->options.vnicc.learning_timeout; 2350 if (qeth_card_hw_is_reachable(card)) 2351 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2352 IPA_VNICC_GET_TIMEOUT, 2353 timeout); 2354 2355 return rc; 2356 } 2357 2358 /* check if VNICC is currently enabled */ 2359 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 2360 { 2361 /* if everything is turned off, VNICC is not active */ 2362 if (!card->options.vnicc.cur_chars) 2363 return false; 2364 /* default values are only OK if rx_bcast was not enabled by user 2365 * or the card is offline. 2366 */ 2367 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 2368 if (!card->options.vnicc.rx_bcast_enabled || 2369 !qeth_card_hw_is_reachable(card)) 2370 return false; 2371 } 2372 return true; 2373 } 2374 2375 /* recover user timeout setting */ 2376 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 2377 u32 *timeout) 2378 { 2379 if (card->options.vnicc.sup_chars & vnicc && 2380 card->options.vnicc.getset_timeout_sup & vnicc && 2381 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 2382 timeout)) 2383 return false; 2384 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2385 return true; 2386 } 2387 2388 /* recover user characteristic setting */ 2389 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2390 bool enable) 2391 { 2392 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2393 2394 if (card->options.vnicc.sup_chars & vnicc && 2395 card->options.vnicc.set_char_sup & vnicc && 2396 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2397 return false; 2398 card->options.vnicc.wanted_chars &= ~vnicc; 2399 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2400 return true; 2401 } 2402 2403 /* (re-)initialize VNICC */ 2404 static void qeth_l2_vnicc_init(struct qeth_card *card) 2405 { 2406 u32 *timeout = &card->options.vnicc.learning_timeout; 2407 unsigned int chars_len, i; 2408 unsigned long chars_tmp; 2409 u32 sup_cmds, vnicc; 2410 bool enable, error; 2411 2412 QETH_CARD_TEXT(card, 2, "vniccini"); 2413 /* reset rx_bcast */ 2414 card->options.vnicc.rx_bcast_enabled = 0; 2415 /* initial query and storage of VNIC characteristics */ 2416 if (qeth_l2_vnicc_query_chars(card)) { 2417 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2418 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2419 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2420 /* fail quietly if user didn't change the default config */ 2421 card->options.vnicc.sup_chars = 0; 2422 card->options.vnicc.cur_chars = 0; 2423 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2424 return; 2425 } 2426 /* get supported commands for each supported characteristic */ 2427 chars_tmp = card->options.vnicc.sup_chars; 2428 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2429 for_each_set_bit(i, &chars_tmp, chars_len) { 2430 vnicc = BIT(i); 2431 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds); 2432 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) || 2433 !(sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2434 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2435 if (!(sup_cmds & IPA_VNICC_ENABLE) || 2436 !(sup_cmds & IPA_VNICC_DISABLE)) 2437 card->options.vnicc.set_char_sup &= ~vnicc; 2438 } 2439 /* enforce assumed default values and recover settings, if changed */ 2440 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2441 timeout); 2442 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; 2443 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; 2444 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2445 for_each_set_bit(i, &chars_tmp, chars_len) { 2446 vnicc = BIT(i); 2447 enable = card->options.vnicc.wanted_chars & vnicc; 2448 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2449 } 2450 if (error) 2451 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2452 } 2453 2454 /* configure default values of VNIC characteristics */ 2455 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2456 { 2457 /* characteristics values */ 2458 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2459 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2460 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2461 /* supported commands */ 2462 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2463 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2464 /* settings wanted by users */ 2465 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2466 } 2467 2468 module_init(qeth_l2_init); 2469 module_exit(qeth_l2_exit); 2470 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2471 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2472 MODULE_LICENSE("GPL"); 2473