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_l2_set_rx_mode(struct net_device *); 30 static void qeth_bridgeport_query_support(struct qeth_card *card); 31 static void qeth_bridge_state_change(struct qeth_card *card, 32 struct qeth_ipa_cmd *cmd); 33 static void qeth_bridge_host_event(struct qeth_card *card, 34 struct qeth_ipa_cmd *cmd); 35 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); 36 static void qeth_l2_vnicc_init(struct qeth_card *card); 37 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 38 u32 *timeout); 39 40 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 41 { 42 struct qeth_card *card; 43 struct net_device *ndev; 44 __u16 temp_dev_no; 45 unsigned long flags; 46 struct ccw_dev_id read_devid; 47 48 ndev = NULL; 49 memcpy(&temp_dev_no, read_dev_no, 2); 50 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 51 list_for_each_entry(card, &qeth_core_card_list.list, list) { 52 ccw_device_get_id(CARD_RDEV(card), &read_devid); 53 if (read_devid.devno == temp_dev_no) { 54 ndev = card->dev; 55 break; 56 } 57 } 58 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 59 return ndev; 60 } 61 62 static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode) 63 { 64 int rc; 65 66 if (retcode) 67 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 68 switch (retcode) { 69 case IPA_RC_SUCCESS: 70 rc = 0; 71 break; 72 case IPA_RC_L2_UNSUPPORTED_CMD: 73 rc = -EOPNOTSUPP; 74 break; 75 case IPA_RC_L2_ADDR_TABLE_FULL: 76 rc = -ENOSPC; 77 break; 78 case IPA_RC_L2_DUP_MAC: 79 case IPA_RC_L2_DUP_LAYER3_MAC: 80 rc = -EEXIST; 81 break; 82 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 83 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 84 rc = -EPERM; 85 break; 86 case IPA_RC_L2_MAC_NOT_FOUND: 87 rc = -ENOENT; 88 break; 89 case -ENOMEM: 90 rc = -ENOMEM; 91 break; 92 default: 93 rc = -EIO; 94 break; 95 } 96 return rc; 97 } 98 99 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 100 enum qeth_ipa_cmds ipacmd) 101 { 102 struct qeth_ipa_cmd *cmd; 103 struct qeth_cmd_buffer *iob; 104 105 QETH_CARD_TEXT(card, 2, "L2sdmac"); 106 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 107 if (!iob) 108 return -ENOMEM; 109 cmd = __ipa_cmd(iob); 110 cmd->data.setdelmac.mac_length = ETH_ALEN; 111 ether_addr_copy(cmd->data.setdelmac.mac, mac); 112 return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob, 113 NULL, NULL)); 114 } 115 116 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 117 { 118 int rc; 119 120 QETH_CARD_TEXT(card, 2, "L2Setmac"); 121 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 122 if (rc == 0) { 123 dev_info(&card->gdev->dev, 124 "MAC address %pM successfully registered on device %s\n", 125 mac, card->dev->name); 126 } else { 127 switch (rc) { 128 case -EEXIST: 129 dev_warn(&card->gdev->dev, 130 "MAC address %pM already exists\n", mac); 131 break; 132 case -EPERM: 133 dev_warn(&card->gdev->dev, 134 "MAC address %pM is not authorized\n", mac); 135 break; 136 } 137 } 138 return rc; 139 } 140 141 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) 142 { 143 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ? 144 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC; 145 int rc; 146 147 QETH_CARD_TEXT(card, 2, "L2Wmac"); 148 rc = qeth_l2_send_setdelmac(card, mac, cmd); 149 if (rc == -EEXIST) 150 QETH_DBF_MESSAGE(2, "MAC %pM already registered on %s\n", 151 mac, QETH_CARD_IFNAME(card)); 152 else if (rc) 153 QETH_DBF_MESSAGE(2, "Failed to register MAC %pM on %s: %d\n", 154 mac, QETH_CARD_IFNAME(card), rc); 155 return rc; 156 } 157 158 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) 159 { 160 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ? 161 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; 162 int rc; 163 164 QETH_CARD_TEXT(card, 2, "L2Rmac"); 165 rc = qeth_l2_send_setdelmac(card, mac, cmd); 166 if (rc) 167 QETH_DBF_MESSAGE(2, "Failed to delete MAC %pM on %s: %d\n", 168 mac, QETH_CARD_IFNAME(card), rc); 169 return rc; 170 } 171 172 static void qeth_l2_del_all_macs(struct qeth_card *card) 173 { 174 struct qeth_mac *mac; 175 struct hlist_node *tmp; 176 int i; 177 178 spin_lock_bh(&card->mclock); 179 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 180 hash_del(&mac->hnode); 181 kfree(mac); 182 } 183 spin_unlock_bh(&card->mclock); 184 } 185 186 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 187 { 188 if (card->info.type == QETH_CARD_TYPE_OSN) 189 return RTN_UNSPEC; 190 if (is_broadcast_ether_addr(skb->data)) 191 return RTN_BROADCAST; 192 if (is_multicast_ether_addr(skb->data)) 193 return RTN_MULTICAST; 194 return RTN_UNSPEC; 195 } 196 197 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb, 198 int cast_type, unsigned int data_len) 199 { 200 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 201 202 memset(hdr, 0, sizeof(struct qeth_hdr)); 203 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 204 hdr->hdr.l2.pkt_length = data_len; 205 206 /* set byte byte 3 to casting flags */ 207 if (cast_type == RTN_MULTICAST) 208 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 209 else if (cast_type == RTN_BROADCAST) 210 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 211 else 212 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 213 214 /* VSWITCH relies on the VLAN 215 * information to be present in 216 * the QDIO header */ 217 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 218 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 219 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 220 } 221 } 222 223 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode) 224 { 225 if (retcode) 226 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 227 228 switch (retcode) { 229 case IPA_RC_SUCCESS: 230 return 0; 231 case IPA_RC_L2_INVALID_VLAN_ID: 232 return -EINVAL; 233 case IPA_RC_L2_DUP_VLAN_ID: 234 return -EEXIST; 235 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 236 return -ENOENT; 237 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 238 return -EPERM; 239 case -ENOMEM: 240 return -ENOMEM; 241 default: 242 return -EIO; 243 } 244 } 245 246 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 247 struct qeth_reply *reply, 248 unsigned long data) 249 { 250 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 251 252 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 253 if (cmd->hdr.return_code) { 254 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n", 255 cmd->data.setdelvlan.vlan_id, 256 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 257 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 258 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 259 } 260 return 0; 261 } 262 263 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 264 enum qeth_ipa_cmds ipacmd) 265 { 266 struct qeth_ipa_cmd *cmd; 267 struct qeth_cmd_buffer *iob; 268 269 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 270 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 271 if (!iob) 272 return -ENOMEM; 273 cmd = __ipa_cmd(iob); 274 cmd->data.setdelvlan.vlan_id = i; 275 return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob, 276 qeth_l2_send_setdelvlan_cb, NULL)); 277 } 278 279 static void qeth_l2_process_vlans(struct qeth_card *card) 280 { 281 struct qeth_vlan_vid *id; 282 283 QETH_CARD_TEXT(card, 3, "L2prcvln"); 284 mutex_lock(&card->vid_list_mutex); 285 list_for_each_entry(id, &card->vid_list, list) { 286 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 287 } 288 mutex_unlock(&card->vid_list_mutex); 289 } 290 291 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 292 __be16 proto, u16 vid) 293 { 294 struct qeth_card *card = dev->ml_priv; 295 struct qeth_vlan_vid *id; 296 int rc; 297 298 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 299 if (!vid) 300 return 0; 301 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 302 QETH_CARD_TEXT(card, 3, "aidREC"); 303 return 0; 304 } 305 id = kmalloc(sizeof(*id), GFP_KERNEL); 306 if (id) { 307 id->vid = vid; 308 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 309 if (rc) { 310 kfree(id); 311 return rc; 312 } 313 mutex_lock(&card->vid_list_mutex); 314 list_add_tail(&id->list, &card->vid_list); 315 mutex_unlock(&card->vid_list_mutex); 316 } else { 317 return -ENOMEM; 318 } 319 return 0; 320 } 321 322 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 323 __be16 proto, u16 vid) 324 { 325 struct qeth_vlan_vid *id, *tmpid = NULL; 326 struct qeth_card *card = dev->ml_priv; 327 int rc = 0; 328 329 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 330 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 331 QETH_CARD_TEXT(card, 3, "kidREC"); 332 return 0; 333 } 334 mutex_lock(&card->vid_list_mutex); 335 list_for_each_entry(id, &card->vid_list, list) { 336 if (id->vid == vid) { 337 list_del(&id->list); 338 tmpid = id; 339 break; 340 } 341 } 342 mutex_unlock(&card->vid_list_mutex); 343 if (tmpid) { 344 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 345 kfree(tmpid); 346 } 347 qeth_l2_set_rx_mode(card->dev); 348 return rc; 349 } 350 351 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 352 { 353 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 354 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 355 356 qeth_set_allowed_threads(card, 0, 1); 357 if (card->read.state == CH_STATE_UP && 358 card->write.state == CH_STATE_UP && 359 (card->state == CARD_STATE_UP)) { 360 if (recovery_mode && 361 card->info.type != QETH_CARD_TYPE_OSN) { 362 qeth_l2_stop(card->dev); 363 } else { 364 rtnl_lock(); 365 dev_close(card->dev); 366 rtnl_unlock(); 367 } 368 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 369 card->state = CARD_STATE_SOFTSETUP; 370 } 371 if (card->state == CARD_STATE_SOFTSETUP) { 372 qeth_l2_del_all_macs(card); 373 qeth_clear_ipacmd_list(card); 374 card->state = CARD_STATE_HARDSETUP; 375 } 376 if (card->state == CARD_STATE_HARDSETUP) { 377 qeth_qdio_clear_card(card, 0); 378 qeth_clear_qdio_buffers(card); 379 qeth_clear_working_pool_list(card); 380 card->state = CARD_STATE_DOWN; 381 } 382 if (card->state == CARD_STATE_DOWN) { 383 qeth_clear_cmd_buffers(&card->read); 384 qeth_clear_cmd_buffers(&card->write); 385 } 386 } 387 388 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 389 int budget, int *done) 390 { 391 int work_done = 0; 392 struct sk_buff *skb; 393 struct qeth_hdr *hdr; 394 unsigned int len; 395 396 *done = 0; 397 WARN_ON_ONCE(!budget); 398 while (budget) { 399 skb = qeth_core_get_next_skb(card, 400 &card->qdio.in_q->bufs[card->rx.b_index], 401 &card->rx.b_element, &card->rx.e_offset, &hdr); 402 if (!skb) { 403 *done = 1; 404 break; 405 } 406 switch (hdr->hdr.l2.id) { 407 case QETH_HEADER_TYPE_LAYER2: 408 skb->protocol = eth_type_trans(skb, skb->dev); 409 qeth_rx_csum(card, skb, hdr->hdr.l2.flags[1]); 410 if (skb->protocol == htons(ETH_P_802_2)) 411 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 412 len = skb->len; 413 napi_gro_receive(&card->napi, skb); 414 break; 415 case QETH_HEADER_TYPE_OSN: 416 if (card->info.type == QETH_CARD_TYPE_OSN) { 417 skb_push(skb, sizeof(struct qeth_hdr)); 418 skb_copy_to_linear_data(skb, hdr, 419 sizeof(struct qeth_hdr)); 420 len = skb->len; 421 card->osn_info.data_cb(skb); 422 break; 423 } 424 /* else unknown */ 425 default: 426 dev_kfree_skb_any(skb); 427 QETH_CARD_TEXT(card, 3, "inbunkno"); 428 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 429 continue; 430 } 431 work_done++; 432 budget--; 433 card->stats.rx_packets++; 434 card->stats.rx_bytes += len; 435 } 436 return work_done; 437 } 438 439 static int qeth_l2_request_initial_mac(struct qeth_card *card) 440 { 441 int rc = 0; 442 443 QETH_DBF_TEXT(SETUP, 2, "l2reqmac"); 444 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 445 446 if (MACHINE_IS_VM) { 447 rc = qeth_vm_request_mac(card); 448 if (!rc) 449 goto out; 450 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n", 451 CARD_BUS_ID(card), rc); 452 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc); 453 /* fall back to alternative mechanism: */ 454 } 455 456 if (card->info.type == QETH_CARD_TYPE_IQD || 457 card->info.type == QETH_CARD_TYPE_OSM || 458 card->info.type == QETH_CARD_TYPE_OSX || 459 card->info.guestlan) { 460 rc = qeth_setadpparms_change_macaddr(card); 461 if (!rc) 462 goto out; 463 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %s: x%x\n", 464 CARD_BUS_ID(card), rc); 465 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 466 /* fall back once more: */ 467 } 468 469 /* some devices don't support a custom MAC address: */ 470 if (card->info.type == QETH_CARD_TYPE_OSM || 471 card->info.type == QETH_CARD_TYPE_OSX) 472 return (rc) ? rc : -EADDRNOTAVAIL; 473 eth_hw_addr_random(card->dev); 474 475 out: 476 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len); 477 return 0; 478 } 479 480 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 481 { 482 struct sockaddr *addr = p; 483 struct qeth_card *card = dev->ml_priv; 484 u8 old_addr[ETH_ALEN]; 485 int rc = 0; 486 487 QETH_CARD_TEXT(card, 3, "setmac"); 488 489 if (card->info.type == QETH_CARD_TYPE_OSN || 490 card->info.type == QETH_CARD_TYPE_OSM || 491 card->info.type == QETH_CARD_TYPE_OSX) { 492 QETH_CARD_TEXT(card, 3, "setmcTYP"); 493 return -EOPNOTSUPP; 494 } 495 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 496 if (!is_valid_ether_addr(addr->sa_data)) 497 return -EADDRNOTAVAIL; 498 499 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 500 QETH_CARD_TEXT(card, 3, "setmcREC"); 501 return -ERESTARTSYS; 502 } 503 504 if (!qeth_card_hw_is_reachable(card)) { 505 ether_addr_copy(dev->dev_addr, addr->sa_data); 506 return 0; 507 } 508 509 /* don't register the same address twice */ 510 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) && 511 (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 512 return 0; 513 514 /* add the new address, switch over, drop the old */ 515 rc = qeth_l2_send_setmac(card, addr->sa_data); 516 if (rc) 517 return rc; 518 ether_addr_copy(old_addr, dev->dev_addr); 519 ether_addr_copy(dev->dev_addr, addr->sa_data); 520 521 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) 522 qeth_l2_remove_mac(card, old_addr); 523 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 524 return 0; 525 } 526 527 static void qeth_promisc_to_bridge(struct qeth_card *card) 528 { 529 struct net_device *dev = card->dev; 530 enum qeth_ipa_promisc_modes promisc_mode; 531 int role; 532 int rc; 533 534 QETH_CARD_TEXT(card, 3, "pmisc2br"); 535 536 if (!card->options.sbp.reflect_promisc) 537 return; 538 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 539 : SET_PROMISC_MODE_OFF; 540 if (promisc_mode == card->info.promisc_mode) 541 return; 542 543 if (promisc_mode == SET_PROMISC_MODE_ON) { 544 if (card->options.sbp.reflect_promisc_primary) 545 role = QETH_SBP_ROLE_PRIMARY; 546 else 547 role = QETH_SBP_ROLE_SECONDARY; 548 } else 549 role = QETH_SBP_ROLE_NONE; 550 551 rc = qeth_bridgeport_setrole(card, role); 552 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 553 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 554 if (!rc) { 555 card->options.sbp.role = role; 556 card->info.promisc_mode = promisc_mode; 557 } 558 559 } 560 /* New MAC address is added to the hash table and marked to be written on card 561 * only if there is not in the hash table storage already 562 * 563 */ 564 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 565 { 566 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 567 struct qeth_mac *mac; 568 569 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 570 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 571 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 572 return; 573 } 574 } 575 576 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 577 if (!mac) 578 return; 579 580 ether_addr_copy(mac->mac_addr, ha->addr); 581 mac->disp_flag = QETH_DISP_ADDR_ADD; 582 583 hash_add(card->mac_htable, &mac->hnode, mac_hash); 584 } 585 586 static void qeth_l2_set_rx_mode(struct net_device *dev) 587 { 588 struct qeth_card *card = dev->ml_priv; 589 struct netdev_hw_addr *ha; 590 struct qeth_mac *mac; 591 struct hlist_node *tmp; 592 int i; 593 int rc; 594 595 if (card->info.type == QETH_CARD_TYPE_OSN) 596 return; 597 598 QETH_CARD_TEXT(card, 3, "setmulti"); 599 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 600 (card->state != CARD_STATE_UP)) 601 return; 602 603 spin_lock_bh(&card->mclock); 604 605 netdev_for_each_mc_addr(ha, dev) 606 qeth_l2_add_mac(card, ha); 607 netdev_for_each_uc_addr(ha, dev) 608 qeth_l2_add_mac(card, ha); 609 610 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 611 switch (mac->disp_flag) { 612 case QETH_DISP_ADDR_DELETE: 613 qeth_l2_remove_mac(card, mac->mac_addr); 614 hash_del(&mac->hnode); 615 kfree(mac); 616 break; 617 case QETH_DISP_ADDR_ADD: 618 rc = qeth_l2_write_mac(card, mac->mac_addr); 619 if (rc) { 620 hash_del(&mac->hnode); 621 kfree(mac); 622 break; 623 } 624 /* fall through */ 625 default: 626 /* for next call to set_rx_mode(): */ 627 mac->disp_flag = QETH_DISP_ADDR_DELETE; 628 } 629 } 630 631 spin_unlock_bh(&card->mclock); 632 633 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 634 qeth_setadp_promisc_mode(card); 635 else 636 qeth_promisc_to_bridge(card); 637 } 638 639 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb, 640 struct qeth_qdio_out_q *queue, int cast_type) 641 { 642 unsigned int data_offset = ETH_HLEN; 643 struct qeth_hdr *hdr; 644 int rc; 645 646 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 647 if (!hdr) 648 return -ENOMEM; 649 qeth_l2_fill_header(hdr, skb, cast_type, skb->len); 650 skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr), 651 data_offset); 652 653 if (!qeth_get_elements_no(card, skb, 1, data_offset)) { 654 rc = -E2BIG; 655 goto out; 656 } 657 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, 658 sizeof(*hdr) + data_offset); 659 out: 660 if (rc) 661 kmem_cache_free(qeth_core_header_cache, hdr); 662 return rc; 663 } 664 665 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb, 666 struct qeth_qdio_out_q *queue, int cast_type, 667 int ipv) 668 { 669 int push_len = sizeof(struct qeth_hdr); 670 unsigned int elements, nr_frags; 671 unsigned int hdr_elements = 0; 672 struct qeth_hdr *hdr = NULL; 673 unsigned int hd_len = 0; 674 int rc; 675 676 /* fix hardware limitation: as long as we do not have sbal 677 * chaining we can not send long frag lists 678 */ 679 if (!qeth_get_elements_no(card, skb, 0, 0)) { 680 rc = skb_linearize(skb); 681 682 if (card->options.performance_stats) { 683 if (rc) 684 card->perf_stats.tx_linfail++; 685 else 686 card->perf_stats.tx_lin++; 687 } 688 if (rc) 689 return rc; 690 } 691 nr_frags = skb_shinfo(skb)->nr_frags; 692 693 rc = skb_cow_head(skb, push_len); 694 if (rc) 695 return rc; 696 push_len = qeth_push_hdr(skb, &hdr, push_len); 697 if (push_len < 0) 698 return push_len; 699 if (!push_len) { 700 /* hdr was allocated from cache */ 701 hd_len = sizeof(*hdr); 702 hdr_elements = 1; 703 } 704 qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len); 705 if (skb->ip_summed == CHECKSUM_PARTIAL) { 706 qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv); 707 if (card->options.performance_stats) 708 card->perf_stats.tx_csum++; 709 } 710 711 elements = qeth_get_elements_no(card, skb, hdr_elements, 0); 712 if (!elements) { 713 rc = -E2BIG; 714 goto out; 715 } 716 elements += hdr_elements; 717 718 /* TODO: remove the skb_orphan() once TX completion is fast enough */ 719 skb_orphan(skb); 720 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements); 721 out: 722 if (!rc) { 723 if (card->options.performance_stats && nr_frags) { 724 card->perf_stats.sg_skbs_sent++; 725 /* nr_frags + skb->data */ 726 card->perf_stats.sg_frags_sent += nr_frags + 1; 727 } 728 } else { 729 if (hd_len) 730 kmem_cache_free(qeth_core_header_cache, hdr); 731 if (rc == -EBUSY) 732 /* roll back to ETH header */ 733 skb_pull(skb, push_len); 734 } 735 return rc; 736 } 737 738 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 739 struct qeth_qdio_out_q *queue) 740 { 741 unsigned int elements; 742 struct qeth_hdr *hdr; 743 744 if (skb->protocol == htons(ETH_P_IPV6)) 745 return -EPROTONOSUPPORT; 746 747 hdr = (struct qeth_hdr *)skb->data; 748 elements = qeth_get_elements_no(card, skb, 0, 0); 749 if (!elements) 750 return -E2BIG; 751 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr))) 752 return -EINVAL; 753 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements); 754 } 755 756 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 757 struct net_device *dev) 758 { 759 struct qeth_card *card = dev->ml_priv; 760 int cast_type = qeth_l2_get_cast_type(card, skb); 761 int ipv = qeth_get_ip_version(skb); 762 struct qeth_qdio_out_q *queue; 763 int tx_bytes = skb->len; 764 int rc; 765 766 if (card->qdio.do_prio_queueing || (cast_type && 767 card->info.is_multicast_different)) 768 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 769 ipv, cast_type)]; 770 else 771 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 772 773 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 774 card->stats.tx_carrier_errors++; 775 goto tx_drop; 776 } 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 if (recover_flag == CARD_STATE_RECOVER) { 1116 if (recovery_mode && 1117 card->info.type != QETH_CARD_TYPE_OSN) { 1118 __qeth_l2_open(card->dev); 1119 } else { 1120 rtnl_lock(); 1121 dev_open(card->dev); 1122 rtnl_unlock(); 1123 } 1124 /* this also sets saved unicast addresses */ 1125 qeth_l2_set_rx_mode(card->dev); 1126 rtnl_lock(); 1127 qeth_recover_features(card->dev); 1128 rtnl_unlock(); 1129 } 1130 /* let user_space know that device is online */ 1131 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1132 mutex_unlock(&card->conf_mutex); 1133 mutex_unlock(&card->discipline_mutex); 1134 return 0; 1135 1136 out_remove: 1137 qeth_l2_stop_card(card, 0); 1138 ccw_device_set_offline(CARD_DDEV(card)); 1139 ccw_device_set_offline(CARD_WDEV(card)); 1140 ccw_device_set_offline(CARD_RDEV(card)); 1141 qdio_free(CARD_DDEV(card)); 1142 if (recover_flag == CARD_STATE_RECOVER) 1143 card->state = CARD_STATE_RECOVER; 1144 else 1145 card->state = CARD_STATE_DOWN; 1146 mutex_unlock(&card->conf_mutex); 1147 mutex_unlock(&card->discipline_mutex); 1148 return rc; 1149 } 1150 1151 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1152 { 1153 return __qeth_l2_set_online(gdev, 0); 1154 } 1155 1156 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1157 int recovery_mode) 1158 { 1159 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1160 int rc = 0, rc2 = 0, rc3 = 0; 1161 enum qeth_card_states recover_flag; 1162 1163 mutex_lock(&card->discipline_mutex); 1164 mutex_lock(&card->conf_mutex); 1165 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1166 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1167 1168 if (card->dev && netif_carrier_ok(card->dev)) 1169 netif_carrier_off(card->dev); 1170 recover_flag = card->state; 1171 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1172 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1173 card->info.hwtrap = 1; 1174 } 1175 qeth_l2_stop_card(card, recovery_mode); 1176 rc = ccw_device_set_offline(CARD_DDEV(card)); 1177 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1178 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1179 if (!rc) 1180 rc = (rc2) ? rc2 : rc3; 1181 if (rc) 1182 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1183 qdio_free(CARD_DDEV(card)); 1184 if (recover_flag == CARD_STATE_UP) 1185 card->state = CARD_STATE_RECOVER; 1186 /* let user_space know that device is offline */ 1187 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1188 mutex_unlock(&card->conf_mutex); 1189 mutex_unlock(&card->discipline_mutex); 1190 return 0; 1191 } 1192 1193 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1194 { 1195 return __qeth_l2_set_offline(cgdev, 0); 1196 } 1197 1198 static int qeth_l2_recover(void *ptr) 1199 { 1200 struct qeth_card *card; 1201 int rc = 0; 1202 1203 card = (struct qeth_card *) ptr; 1204 QETH_CARD_TEXT(card, 2, "recover1"); 1205 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1206 return 0; 1207 QETH_CARD_TEXT(card, 2, "recover2"); 1208 dev_warn(&card->gdev->dev, 1209 "A recovery process has been started for the device\n"); 1210 qeth_set_recovery_task(card); 1211 __qeth_l2_set_offline(card->gdev, 1); 1212 rc = __qeth_l2_set_online(card->gdev, 1); 1213 if (!rc) 1214 dev_info(&card->gdev->dev, 1215 "Device successfully recovered!\n"); 1216 else { 1217 qeth_close_dev(card); 1218 dev_warn(&card->gdev->dev, "The qeth device driver " 1219 "failed to recover an error on the device\n"); 1220 } 1221 qeth_clear_recovery_task(card); 1222 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1223 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1224 return 0; 1225 } 1226 1227 static int __init qeth_l2_init(void) 1228 { 1229 pr_info("register layer 2 discipline\n"); 1230 return 0; 1231 } 1232 1233 static void __exit qeth_l2_exit(void) 1234 { 1235 pr_info("unregister layer 2 discipline\n"); 1236 } 1237 1238 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1239 { 1240 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1241 1242 if (card->dev) 1243 netif_device_detach(card->dev); 1244 qeth_set_allowed_threads(card, 0, 1); 1245 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1246 if (gdev->state == CCWGROUP_OFFLINE) 1247 return 0; 1248 if (card->state == CARD_STATE_UP) { 1249 if (card->info.hwtrap) 1250 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1251 __qeth_l2_set_offline(card->gdev, 1); 1252 } else 1253 __qeth_l2_set_offline(card->gdev, 0); 1254 return 0; 1255 } 1256 1257 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1258 { 1259 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1260 int rc = 0; 1261 1262 if (gdev->state == CCWGROUP_OFFLINE) 1263 goto out; 1264 1265 if (card->state == CARD_STATE_RECOVER) { 1266 rc = __qeth_l2_set_online(card->gdev, 1); 1267 if (rc) { 1268 rtnl_lock(); 1269 dev_close(card->dev); 1270 rtnl_unlock(); 1271 } 1272 } else 1273 rc = __qeth_l2_set_online(card->gdev, 0); 1274 out: 1275 qeth_set_allowed_threads(card, 0xffffffff, 0); 1276 if (card->dev) 1277 netif_device_attach(card->dev); 1278 if (rc) 1279 dev_warn(&card->gdev->dev, "The qeth device driver " 1280 "failed to recover an error on the device\n"); 1281 return rc; 1282 } 1283 1284 /* Returns zero if the command is successfully "consumed" */ 1285 static int qeth_l2_control_event(struct qeth_card *card, 1286 struct qeth_ipa_cmd *cmd) 1287 { 1288 switch (cmd->hdr.command) { 1289 case IPA_CMD_SETBRIDGEPORT_OSA: 1290 case IPA_CMD_SETBRIDGEPORT_IQD: 1291 if (cmd->data.sbp.hdr.command_code == 1292 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1293 qeth_bridge_state_change(card, cmd); 1294 return 0; 1295 } else 1296 return 1; 1297 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1298 qeth_bridge_host_event(card, cmd); 1299 return 0; 1300 default: 1301 return 1; 1302 } 1303 } 1304 1305 struct qeth_discipline qeth_l2_discipline = { 1306 .devtype = &qeth_l2_devtype, 1307 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1308 .recover = qeth_l2_recover, 1309 .setup = qeth_l2_probe_device, 1310 .remove = qeth_l2_remove_device, 1311 .set_online = qeth_l2_set_online, 1312 .set_offline = qeth_l2_set_offline, 1313 .freeze = qeth_l2_pm_suspend, 1314 .thaw = qeth_l2_pm_resume, 1315 .restore = qeth_l2_pm_resume, 1316 .do_ioctl = NULL, 1317 .control_event_handler = qeth_l2_control_event, 1318 }; 1319 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1320 1321 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1322 struct qeth_cmd_buffer *iob) 1323 { 1324 unsigned long flags; 1325 int rc = 0; 1326 1327 QETH_CARD_TEXT(card, 5, "osndctrd"); 1328 1329 wait_event(card->wait_q, 1330 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1331 qeth_prepare_control_data(card, len, iob); 1332 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1333 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1334 rc = ccw_device_start_timeout(CARD_WDEV(card), &card->write.ccw, 1335 (addr_t) iob, 0, 0, QETH_IPA_TIMEOUT); 1336 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1337 if (rc) { 1338 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1339 "ccw_device_start rc = %i\n", rc); 1340 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1341 qeth_release_buffer(iob->channel, iob); 1342 atomic_set(&card->write.irq_pending, 0); 1343 wake_up(&card->wait_q); 1344 } 1345 return rc; 1346 } 1347 1348 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1349 struct qeth_cmd_buffer *iob, int data_len) 1350 { 1351 u16 s1, s2; 1352 1353 QETH_CARD_TEXT(card, 4, "osndipa"); 1354 1355 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1356 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1357 s2 = (u16)data_len; 1358 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1359 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1360 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1361 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1362 return qeth_osn_send_control_data(card, s1, iob); 1363 } 1364 1365 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1366 { 1367 struct qeth_cmd_buffer *iob; 1368 struct qeth_card *card; 1369 1370 if (!dev) 1371 return -ENODEV; 1372 card = dev->ml_priv; 1373 if (!card) 1374 return -ENODEV; 1375 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1376 if (!qeth_card_hw_is_reachable(card)) 1377 return -ENODEV; 1378 iob = qeth_wait_for_buffer(&card->write); 1379 memcpy(__ipa_cmd(iob), data, data_len); 1380 return qeth_osn_send_ipa_cmd(card, iob, data_len); 1381 } 1382 EXPORT_SYMBOL(qeth_osn_assist); 1383 1384 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1385 int (*assist_cb)(struct net_device *, void *), 1386 int (*data_cb)(struct sk_buff *)) 1387 { 1388 struct qeth_card *card; 1389 1390 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1391 if (*dev == NULL) 1392 return -ENODEV; 1393 card = (*dev)->ml_priv; 1394 if (!card) 1395 return -ENODEV; 1396 QETH_CARD_TEXT(card, 2, "osnreg"); 1397 if ((assist_cb == NULL) || (data_cb == NULL)) 1398 return -EINVAL; 1399 card->osn_info.assist_cb = assist_cb; 1400 card->osn_info.data_cb = data_cb; 1401 return 0; 1402 } 1403 EXPORT_SYMBOL(qeth_osn_register); 1404 1405 void qeth_osn_deregister(struct net_device *dev) 1406 { 1407 struct qeth_card *card; 1408 1409 if (!dev) 1410 return; 1411 card = dev->ml_priv; 1412 if (!card) 1413 return; 1414 QETH_CARD_TEXT(card, 2, "osndereg"); 1415 card->osn_info.assist_cb = NULL; 1416 card->osn_info.data_cb = NULL; 1417 return; 1418 } 1419 EXPORT_SYMBOL(qeth_osn_deregister); 1420 1421 /* SETBRIDGEPORT support, async notifications */ 1422 1423 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1424 1425 /** 1426 * qeth_bridge_emit_host_event() - bridgeport address change notification 1427 * @card: qeth_card structure pointer, for udev events. 1428 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1429 * and reset token and addr_lnid are unused and may be NULL. 1430 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1431 * object, 0 - addition of an object. 1432 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1433 * @token: "network token" structure identifying physical address of the port. 1434 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1435 * 1436 * This function is called when registrations and deregistrations are 1437 * reported by the hardware, and also when notifications are enabled - 1438 * for all currently registered addresses. 1439 */ 1440 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1441 enum qeth_an_event_type evtype, 1442 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1443 { 1444 char str[7][32]; 1445 char *env[8]; 1446 int i = 0; 1447 1448 switch (evtype) { 1449 case anev_reg_unreg: 1450 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1451 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1452 ? "deregister" : "register"); 1453 env[i] = str[i]; i++; 1454 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1455 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1456 addr_lnid->lnid); 1457 env[i] = str[i]; i++; 1458 } 1459 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1460 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1461 addr_lnid->mac); 1462 env[i] = str[i]; i++; 1463 } 1464 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1465 token->cssid, token->ssid, token->devnum); 1466 env[i] = str[i]; i++; 1467 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1468 env[i] = str[i]; i++; 1469 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1470 token->chpid); 1471 env[i] = str[i]; i++; 1472 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1473 env[i] = str[i]; i++; 1474 break; 1475 case anev_abort: 1476 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1477 env[i] = str[i]; i++; 1478 break; 1479 case anev_reset: 1480 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1481 env[i] = str[i]; i++; 1482 break; 1483 } 1484 env[i] = NULL; 1485 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1486 } 1487 1488 struct qeth_bridge_state_data { 1489 struct work_struct worker; 1490 struct qeth_card *card; 1491 struct qeth_sbp_state_change qports; 1492 }; 1493 1494 static void qeth_bridge_state_change_worker(struct work_struct *work) 1495 { 1496 struct qeth_bridge_state_data *data = 1497 container_of(work, struct qeth_bridge_state_data, worker); 1498 /* We are only interested in the first entry - local port */ 1499 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1500 char env_locrem[32]; 1501 char env_role[32]; 1502 char env_state[32]; 1503 char *env[] = { 1504 env_locrem, 1505 env_role, 1506 env_state, 1507 NULL 1508 }; 1509 1510 /* Role should not change by itself, but if it did, */ 1511 /* information from the hardware is authoritative. */ 1512 mutex_lock(&data->card->conf_mutex); 1513 data->card->options.sbp.role = entry->role; 1514 mutex_unlock(&data->card->conf_mutex); 1515 1516 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1517 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1518 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1519 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1520 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1521 "<INVALID>"); 1522 snprintf(env_state, sizeof(env_state), "STATE=%s", 1523 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1524 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1525 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1526 "<INVALID>"); 1527 kobject_uevent_env(&data->card->gdev->dev.kobj, 1528 KOBJ_CHANGE, env); 1529 kfree(data); 1530 } 1531 1532 static void qeth_bridge_state_change(struct qeth_card *card, 1533 struct qeth_ipa_cmd *cmd) 1534 { 1535 struct qeth_sbp_state_change *qports = 1536 &cmd->data.sbp.data.state_change; 1537 struct qeth_bridge_state_data *data; 1538 int extrasize; 1539 1540 QETH_CARD_TEXT(card, 2, "brstchng"); 1541 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1542 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1543 return; 1544 } 1545 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1546 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1547 GFP_ATOMIC); 1548 if (!data) { 1549 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1550 return; 1551 } 1552 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1553 data->card = card; 1554 memcpy(&data->qports, qports, 1555 sizeof(struct qeth_sbp_state_change) + extrasize); 1556 queue_work(qeth_wq, &data->worker); 1557 } 1558 1559 struct qeth_bridge_host_data { 1560 struct work_struct worker; 1561 struct qeth_card *card; 1562 struct qeth_ipacmd_addr_change hostevs; 1563 }; 1564 1565 static void qeth_bridge_host_event_worker(struct work_struct *work) 1566 { 1567 struct qeth_bridge_host_data *data = 1568 container_of(work, struct qeth_bridge_host_data, worker); 1569 int i; 1570 1571 if (data->hostevs.lost_event_mask) { 1572 dev_info(&data->card->gdev->dev, 1573 "Address notification from the Bridge Port stopped %s (%s)\n", 1574 data->card->dev->name, 1575 (data->hostevs.lost_event_mask == 0x01) 1576 ? "Overflow" 1577 : (data->hostevs.lost_event_mask == 0x02) 1578 ? "Bridge port state change" 1579 : "Unknown reason"); 1580 mutex_lock(&data->card->conf_mutex); 1581 data->card->options.sbp.hostnotification = 0; 1582 mutex_unlock(&data->card->conf_mutex); 1583 qeth_bridge_emit_host_event(data->card, anev_abort, 1584 0, NULL, NULL); 1585 } else 1586 for (i = 0; i < data->hostevs.num_entries; i++) { 1587 struct qeth_ipacmd_addr_change_entry *entry = 1588 &data->hostevs.entry[i]; 1589 qeth_bridge_emit_host_event(data->card, 1590 anev_reg_unreg, 1591 entry->change_code, 1592 &entry->token, &entry->addr_lnid); 1593 } 1594 kfree(data); 1595 } 1596 1597 static void qeth_bridge_host_event(struct qeth_card *card, 1598 struct qeth_ipa_cmd *cmd) 1599 { 1600 struct qeth_ipacmd_addr_change *hostevs = 1601 &cmd->data.addrchange; 1602 struct qeth_bridge_host_data *data; 1603 int extrasize; 1604 1605 QETH_CARD_TEXT(card, 2, "brhostev"); 1606 if (cmd->hdr.return_code != 0x0000) { 1607 if (cmd->hdr.return_code == 0x0010) { 1608 if (hostevs->lost_event_mask == 0x00) 1609 hostevs->lost_event_mask = 0xff; 1610 } else { 1611 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1612 cmd->hdr.return_code); 1613 return; 1614 } 1615 } 1616 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1617 hostevs->num_entries; 1618 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1619 GFP_ATOMIC); 1620 if (!data) { 1621 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1622 return; 1623 } 1624 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1625 data->card = card; 1626 memcpy(&data->hostevs, hostevs, 1627 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1628 queue_work(qeth_wq, &data->worker); 1629 } 1630 1631 /* SETBRIDGEPORT support; sending commands */ 1632 1633 struct _qeth_sbp_cbctl { 1634 u16 ipa_rc; 1635 u16 cmd_rc; 1636 union { 1637 u32 supported; 1638 struct { 1639 enum qeth_sbp_roles *role; 1640 enum qeth_sbp_states *state; 1641 } qports; 1642 } data; 1643 }; 1644 1645 /** 1646 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1647 * @card: qeth_card structure pointer, for debug messages. 1648 * @cbctl: state structure with hardware return codes. 1649 * @setcmd: IPA command code 1650 * 1651 * Returns negative errno-compatible error indication or 0 on success. 1652 */ 1653 static int qeth_bridgeport_makerc(struct qeth_card *card, 1654 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1655 { 1656 int rc; 1657 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1658 1659 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1660 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1661 switch (cbctl->cmd_rc) { 1662 case IPA_RC_SUCCESS: 1663 rc = 0; 1664 break; 1665 case IPA_RC_L2_UNSUPPORTED_CMD: 1666 case IPA_RC_UNSUPPORTED_COMMAND: 1667 rc = -EOPNOTSUPP; 1668 break; 1669 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1670 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1671 rc = -ENODEV; /* maybe not the best code here? */ 1672 dev_err(&card->gdev->dev, 1673 "The device is not configured as a Bridge Port\n"); 1674 break; 1675 case IPA_RC_SBP_OSA_OS_MISMATCH: 1676 case IPA_RC_SBP_IQD_OS_MISMATCH: 1677 rc = -EPERM; 1678 dev_err(&card->gdev->dev, 1679 "A Bridge Port is already configured by a different operating system\n"); 1680 break; 1681 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1682 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1683 switch (setcmd) { 1684 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1685 rc = -EEXIST; 1686 dev_err(&card->gdev->dev, 1687 "The LAN already has a primary Bridge Port\n"); 1688 break; 1689 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1690 rc = -EBUSY; 1691 dev_err(&card->gdev->dev, 1692 "The device is already a primary Bridge Port\n"); 1693 break; 1694 default: 1695 rc = -EIO; 1696 } 1697 break; 1698 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1699 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1700 rc = -EBUSY; 1701 dev_err(&card->gdev->dev, 1702 "The device is already a secondary Bridge Port\n"); 1703 break; 1704 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1705 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1706 rc = -EEXIST; 1707 dev_err(&card->gdev->dev, 1708 "The LAN cannot have more secondary Bridge Ports\n"); 1709 break; 1710 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1711 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1712 rc = -EBUSY; 1713 dev_err(&card->gdev->dev, 1714 "The device is already a primary Bridge Port\n"); 1715 break; 1716 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1717 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1718 rc = -EACCES; 1719 dev_err(&card->gdev->dev, 1720 "The device is not authorized to be a Bridge Port\n"); 1721 break; 1722 default: 1723 rc = -EIO; 1724 } 1725 else 1726 switch (cbctl->ipa_rc) { 1727 case IPA_RC_NOTSUPP: 1728 rc = -EOPNOTSUPP; 1729 break; 1730 case IPA_RC_UNSUPPORTED_COMMAND: 1731 rc = -EOPNOTSUPP; 1732 break; 1733 default: 1734 rc = -EIO; 1735 } 1736 1737 if (rc) { 1738 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1739 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1740 } 1741 return rc; 1742 } 1743 1744 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1745 enum qeth_ipa_sbp_cmd sbp_cmd, 1746 unsigned int cmd_length) 1747 { 1748 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ? 1749 IPA_CMD_SETBRIDGEPORT_IQD : 1750 IPA_CMD_SETBRIDGEPORT_OSA; 1751 struct qeth_cmd_buffer *iob; 1752 struct qeth_ipa_cmd *cmd; 1753 1754 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0); 1755 if (!iob) 1756 return iob; 1757 cmd = __ipa_cmd(iob); 1758 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1759 cmd_length; 1760 cmd->data.sbp.hdr.command_code = sbp_cmd; 1761 cmd->data.sbp.hdr.used_total = 1; 1762 cmd->data.sbp.hdr.seq_no = 1; 1763 return iob; 1764 } 1765 1766 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1767 struct qeth_reply *reply, unsigned long data) 1768 { 1769 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1770 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1771 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1772 cbctl->ipa_rc = cmd->hdr.return_code; 1773 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1774 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1775 cbctl->data.supported = 1776 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1777 } else { 1778 cbctl->data.supported = 0; 1779 } 1780 return 0; 1781 } 1782 1783 /** 1784 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1785 * @card: qeth_card structure pointer. 1786 * 1787 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1788 * strucutre: card->options.sbp.supported_funcs. 1789 */ 1790 static void qeth_bridgeport_query_support(struct qeth_card *card) 1791 { 1792 struct qeth_cmd_buffer *iob; 1793 struct _qeth_sbp_cbctl cbctl; 1794 1795 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1796 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1797 sizeof(struct qeth_sbp_query_cmds_supp)); 1798 if (!iob) 1799 return; 1800 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1801 (void *)&cbctl) || 1802 qeth_bridgeport_makerc(card, &cbctl, 1803 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1804 /* non-zero makerc signifies failure, and produce messages */ 1805 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1806 return; 1807 } 1808 card->options.sbp.supported_funcs = cbctl.data.supported; 1809 } 1810 1811 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1812 struct qeth_reply *reply, unsigned long data) 1813 { 1814 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1815 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1816 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1817 1818 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1819 cbctl->ipa_rc = cmd->hdr.return_code; 1820 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1821 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1822 return 0; 1823 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1824 cbctl->cmd_rc = 0xffff; 1825 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1826 return 0; 1827 } 1828 /* first entry contains the state of the local port */ 1829 if (qports->num_entries > 0) { 1830 if (cbctl->data.qports.role) 1831 *cbctl->data.qports.role = qports->entry[0].role; 1832 if (cbctl->data.qports.state) 1833 *cbctl->data.qports.state = qports->entry[0].state; 1834 } 1835 return 0; 1836 } 1837 1838 /** 1839 * qeth_bridgeport_query_ports() - query local bridgeport status. 1840 * @card: qeth_card structure pointer. 1841 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1842 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1843 * 1844 * Returns negative errno-compatible error indication or 0 on success. 1845 * 1846 * 'role' and 'state' are not updated in case of hardware operation failure. 1847 */ 1848 int qeth_bridgeport_query_ports(struct qeth_card *card, 1849 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1850 { 1851 int rc = 0; 1852 struct qeth_cmd_buffer *iob; 1853 struct _qeth_sbp_cbctl cbctl = { 1854 .data = { 1855 .qports = { 1856 .role = role, 1857 .state = state, 1858 }, 1859 }, 1860 }; 1861 1862 QETH_CARD_TEXT(card, 2, "brqports"); 1863 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1864 return -EOPNOTSUPP; 1865 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1866 if (!iob) 1867 return -ENOMEM; 1868 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1869 (void *)&cbctl); 1870 if (rc < 0) 1871 return rc; 1872 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1873 } 1874 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1875 1876 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1877 struct qeth_reply *reply, unsigned long data) 1878 { 1879 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1880 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1881 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1882 cbctl->ipa_rc = cmd->hdr.return_code; 1883 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1884 return 0; 1885 } 1886 1887 /** 1888 * qeth_bridgeport_setrole() - Assign primary role to the port. 1889 * @card: qeth_card structure pointer. 1890 * @role: Role to assign. 1891 * 1892 * Returns negative errno-compatible error indication or 0 on success. 1893 */ 1894 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1895 { 1896 int rc = 0; 1897 int cmdlength; 1898 struct qeth_cmd_buffer *iob; 1899 struct _qeth_sbp_cbctl cbctl; 1900 enum qeth_ipa_sbp_cmd setcmd; 1901 1902 QETH_CARD_TEXT(card, 2, "brsetrol"); 1903 switch (role) { 1904 case QETH_SBP_ROLE_NONE: 1905 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1906 cmdlength = sizeof(struct qeth_sbp_reset_role); 1907 break; 1908 case QETH_SBP_ROLE_PRIMARY: 1909 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1910 cmdlength = sizeof(struct qeth_sbp_set_primary); 1911 break; 1912 case QETH_SBP_ROLE_SECONDARY: 1913 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1914 cmdlength = sizeof(struct qeth_sbp_set_secondary); 1915 break; 1916 default: 1917 return -EINVAL; 1918 } 1919 if (!(card->options.sbp.supported_funcs & setcmd)) 1920 return -EOPNOTSUPP; 1921 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1922 if (!iob) 1923 return -ENOMEM; 1924 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 1925 (void *)&cbctl); 1926 if (rc < 0) 1927 return rc; 1928 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 1929 } 1930 1931 /** 1932 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1933 * @card: qeth_card structure pointer, for debug messages. 1934 * 1935 * Returns negative errno-compatible error indication or 0 on success. 1936 */ 1937 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1938 { 1939 int rc; 1940 1941 if (pnso_rc == 0) 1942 switch (response) { 1943 case 0x0001: 1944 rc = 0; 1945 break; 1946 case 0x0004: 1947 case 0x0100: 1948 case 0x0106: 1949 rc = -EOPNOTSUPP; 1950 dev_err(&card->gdev->dev, 1951 "Setting address notification failed\n"); 1952 break; 1953 case 0x0107: 1954 rc = -EAGAIN; 1955 break; 1956 default: 1957 rc = -EIO; 1958 } 1959 else 1960 rc = -EIO; 1961 1962 if (rc) { 1963 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1964 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1965 } 1966 return rc; 1967 } 1968 1969 static void qeth_bridgeport_an_set_cb(void *priv, 1970 enum qdio_brinfo_entry_type type, void *entry) 1971 { 1972 struct qeth_card *card = (struct qeth_card *)priv; 1973 struct qdio_brinfo_entry_l2 *l2entry; 1974 u8 code; 1975 1976 if (type != l2_addr_lnid) { 1977 WARN_ON_ONCE(1); 1978 return; 1979 } 1980 1981 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1982 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1983 if (l2entry->addr_lnid.lnid) 1984 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1985 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1986 (struct net_if_token *)&l2entry->nit, 1987 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1988 } 1989 1990 /** 1991 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1992 * @card: qeth_card structure pointer. 1993 * @enable: 0 - disable, non-zero - enable notifications 1994 * 1995 * Returns negative errno-compatible error indication or 0 on success. 1996 * 1997 * On enable, emits a series of address notifications udev events for all 1998 * currently registered hosts. 1999 */ 2000 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2001 { 2002 int rc; 2003 u16 response; 2004 struct ccw_device *ddev; 2005 struct subchannel_id schid; 2006 2007 if (!card) 2008 return -EINVAL; 2009 if (!card->options.sbp.supported_funcs) 2010 return -EOPNOTSUPP; 2011 ddev = CARD_DDEV(card); 2012 ccw_device_get_schid(ddev, &schid); 2013 2014 if (enable) { 2015 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2016 rc = qdio_pnso_brinfo(schid, 1, &response, 2017 qeth_bridgeport_an_set_cb, card); 2018 } else 2019 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2020 return qeth_anset_makerc(card, rc, response); 2021 } 2022 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2023 2024 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 2025 { 2026 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 2027 card->options.sbp.hostnotification); 2028 } 2029 2030 /* VNIC Characteristics support */ 2031 2032 /* handle VNICC IPA command return codes; convert to error codes */ 2033 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc) 2034 { 2035 int rc; 2036 2037 switch (ipa_rc) { 2038 case IPA_RC_SUCCESS: 2039 return ipa_rc; 2040 case IPA_RC_L2_UNSUPPORTED_CMD: 2041 case IPA_RC_NOTSUPP: 2042 rc = -EOPNOTSUPP; 2043 break; 2044 case IPA_RC_VNICC_OOSEQ: 2045 rc = -EALREADY; 2046 break; 2047 case IPA_RC_VNICC_VNICBP: 2048 rc = -EBUSY; 2049 break; 2050 case IPA_RC_L2_ADDR_TABLE_FULL: 2051 rc = -ENOSPC; 2052 break; 2053 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 2054 rc = -EACCES; 2055 break; 2056 default: 2057 rc = -EIO; 2058 } 2059 2060 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 2061 return rc; 2062 } 2063 2064 /* generic VNICC request call back control */ 2065 struct _qeth_l2_vnicc_request_cbctl { 2066 u32 sub_cmd; 2067 struct { 2068 u32 vnic_char; 2069 u32 timeout; 2070 } param; 2071 struct { 2072 union{ 2073 u32 *sup_cmds; 2074 u32 *timeout; 2075 }; 2076 } result; 2077 }; 2078 2079 /* generic VNICC request call back */ 2080 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 2081 struct qeth_reply *reply, 2082 unsigned long data) 2083 { 2084 struct _qeth_l2_vnicc_request_cbctl *cbctl = 2085 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 2086 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2087 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 2088 2089 QETH_CARD_TEXT(card, 2, "vniccrcb"); 2090 if (cmd->hdr.return_code) 2091 return 0; 2092 /* return results to caller */ 2093 card->options.vnicc.sup_chars = rep->hdr.sup; 2094 card->options.vnicc.cur_chars = rep->hdr.cur; 2095 2096 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS) 2097 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds; 2098 2099 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT) 2100 *cbctl->result.timeout = rep->getset_timeout.timeout; 2101 2102 return 0; 2103 } 2104 2105 /* generic VNICC request */ 2106 static int qeth_l2_vnicc_request(struct qeth_card *card, 2107 struct _qeth_l2_vnicc_request_cbctl *cbctl) 2108 { 2109 struct qeth_ipacmd_vnicc *req; 2110 struct qeth_cmd_buffer *iob; 2111 struct qeth_ipa_cmd *cmd; 2112 int rc; 2113 2114 QETH_CARD_TEXT(card, 2, "vniccreq"); 2115 2116 /* get new buffer for request */ 2117 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0); 2118 if (!iob) 2119 return -ENOMEM; 2120 2121 /* create header for request */ 2122 cmd = __ipa_cmd(iob); 2123 req = &cmd->data.vnicc; 2124 2125 /* create sub command header for request */ 2126 req->sub_hdr.data_length = sizeof(req->sub_hdr); 2127 req->sub_hdr.sub_command = cbctl->sub_cmd; 2128 2129 /* create sub command specific request fields */ 2130 switch (cbctl->sub_cmd) { 2131 case IPA_VNICC_QUERY_CHARS: 2132 break; 2133 case IPA_VNICC_QUERY_CMDS: 2134 req->sub_hdr.data_length += sizeof(req->query_cmds); 2135 req->query_cmds.vnic_char = cbctl->param.vnic_char; 2136 break; 2137 case IPA_VNICC_ENABLE: 2138 case IPA_VNICC_DISABLE: 2139 req->sub_hdr.data_length += sizeof(req->set_char); 2140 req->set_char.vnic_char = cbctl->param.vnic_char; 2141 break; 2142 case IPA_VNICC_SET_TIMEOUT: 2143 req->getset_timeout.timeout = cbctl->param.timeout; 2144 /* fallthrough */ 2145 case IPA_VNICC_GET_TIMEOUT: 2146 req->sub_hdr.data_length += sizeof(req->getset_timeout); 2147 req->getset_timeout.vnic_char = cbctl->param.vnic_char; 2148 break; 2149 default: 2150 qeth_release_buffer(iob->channel, iob); 2151 return -EOPNOTSUPP; 2152 } 2153 2154 /* send request */ 2155 rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, 2156 (void *) cbctl); 2157 2158 return qeth_l2_vnicc_makerc(card, rc); 2159 } 2160 2161 /* VNICC query VNIC characteristics request */ 2162 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 2163 { 2164 struct _qeth_l2_vnicc_request_cbctl cbctl; 2165 2166 /* prepare callback control */ 2167 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS; 2168 2169 QETH_CARD_TEXT(card, 2, "vniccqch"); 2170 return qeth_l2_vnicc_request(card, &cbctl); 2171 } 2172 2173 /* VNICC query sub commands request */ 2174 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 2175 u32 *sup_cmds) 2176 { 2177 struct _qeth_l2_vnicc_request_cbctl cbctl; 2178 2179 /* prepare callback control */ 2180 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS; 2181 cbctl.param.vnic_char = vnic_char; 2182 cbctl.result.sup_cmds = sup_cmds; 2183 2184 QETH_CARD_TEXT(card, 2, "vniccqcm"); 2185 return qeth_l2_vnicc_request(card, &cbctl); 2186 } 2187 2188 /* VNICC enable/disable characteristic request */ 2189 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 2190 u32 cmd) 2191 { 2192 struct _qeth_l2_vnicc_request_cbctl cbctl; 2193 2194 /* prepare callback control */ 2195 cbctl.sub_cmd = cmd; 2196 cbctl.param.vnic_char = vnic_char; 2197 2198 QETH_CARD_TEXT(card, 2, "vniccedc"); 2199 return qeth_l2_vnicc_request(card, &cbctl); 2200 } 2201 2202 /* VNICC get/set timeout for characteristic request */ 2203 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 2204 u32 cmd, u32 *timeout) 2205 { 2206 struct _qeth_l2_vnicc_request_cbctl cbctl; 2207 2208 /* prepare callback control */ 2209 cbctl.sub_cmd = cmd; 2210 cbctl.param.vnic_char = vnicc; 2211 if (cmd == IPA_VNICC_SET_TIMEOUT) 2212 cbctl.param.timeout = *timeout; 2213 if (cmd == IPA_VNICC_GET_TIMEOUT) 2214 cbctl.result.timeout = timeout; 2215 2216 QETH_CARD_TEXT(card, 2, "vniccgst"); 2217 return qeth_l2_vnicc_request(card, &cbctl); 2218 } 2219 2220 /* set current VNICC flag state; called from sysfs store function */ 2221 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 2222 { 2223 int rc = 0; 2224 u32 cmd; 2225 2226 QETH_CARD_TEXT(card, 2, "vniccsch"); 2227 2228 /* do not change anything if BridgePort is enabled */ 2229 if (qeth_bridgeport_is_in_use(card)) 2230 return -EBUSY; 2231 2232 /* check if characteristic and enable/disable are supported */ 2233 if (!(card->options.vnicc.sup_chars & vnicc) || 2234 !(card->options.vnicc.set_char_sup & vnicc)) 2235 return -EOPNOTSUPP; 2236 2237 /* set enable/disable command and store wanted characteristic */ 2238 if (state) { 2239 cmd = IPA_VNICC_ENABLE; 2240 card->options.vnicc.wanted_chars |= vnicc; 2241 } else { 2242 cmd = IPA_VNICC_DISABLE; 2243 card->options.vnicc.wanted_chars &= ~vnicc; 2244 } 2245 2246 /* do we need to do anything? */ 2247 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 2248 return rc; 2249 2250 /* if card is not ready, simply stop here */ 2251 if (!qeth_card_hw_is_reachable(card)) { 2252 if (state) 2253 card->options.vnicc.cur_chars |= vnicc; 2254 else 2255 card->options.vnicc.cur_chars &= ~vnicc; 2256 return rc; 2257 } 2258 2259 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 2260 if (rc) 2261 card->options.vnicc.wanted_chars = 2262 card->options.vnicc.cur_chars; 2263 else { 2264 /* successful online VNICC change; handle special cases */ 2265 if (state && vnicc == QETH_VNICC_RX_BCAST) 2266 card->options.vnicc.rx_bcast_enabled = true; 2267 if (!state && vnicc == QETH_VNICC_LEARNING) 2268 qeth_l2_vnicc_recover_timeout(card, vnicc, 2269 &card->options.vnicc.learning_timeout); 2270 } 2271 2272 return rc; 2273 } 2274 2275 /* get current VNICC flag state; called from sysfs show function */ 2276 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 2277 { 2278 int rc = 0; 2279 2280 QETH_CARD_TEXT(card, 2, "vniccgch"); 2281 2282 /* do not get anything if BridgePort is enabled */ 2283 if (qeth_bridgeport_is_in_use(card)) 2284 return -EBUSY; 2285 2286 /* check if characteristic is supported */ 2287 if (!(card->options.vnicc.sup_chars & vnicc)) 2288 return -EOPNOTSUPP; 2289 2290 /* if card is ready, query current VNICC state */ 2291 if (qeth_card_hw_is_reachable(card)) 2292 rc = qeth_l2_vnicc_query_chars(card); 2293 2294 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 2295 return rc; 2296 } 2297 2298 /* set VNICC timeout; called from sysfs store function. Currently, only learning 2299 * supports timeout 2300 */ 2301 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 2302 { 2303 int rc = 0; 2304 2305 QETH_CARD_TEXT(card, 2, "vniccsto"); 2306 2307 /* do not change anything if BridgePort is enabled */ 2308 if (qeth_bridgeport_is_in_use(card)) 2309 return -EBUSY; 2310 2311 /* check if characteristic and set_timeout are supported */ 2312 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2313 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2314 return -EOPNOTSUPP; 2315 2316 /* do we need to do anything? */ 2317 if (card->options.vnicc.learning_timeout == timeout) 2318 return rc; 2319 2320 /* if card is not ready, simply store the value internally and return */ 2321 if (!qeth_card_hw_is_reachable(card)) { 2322 card->options.vnicc.learning_timeout = timeout; 2323 return rc; 2324 } 2325 2326 /* send timeout value to card; if successful, store value internally */ 2327 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2328 IPA_VNICC_SET_TIMEOUT, &timeout); 2329 if (!rc) 2330 card->options.vnicc.learning_timeout = timeout; 2331 2332 return rc; 2333 } 2334 2335 /* get current VNICC timeout; called from sysfs show function. Currently, only 2336 * learning supports timeout 2337 */ 2338 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 2339 { 2340 int rc = 0; 2341 2342 QETH_CARD_TEXT(card, 2, "vniccgto"); 2343 2344 /* do not get anything if BridgePort is enabled */ 2345 if (qeth_bridgeport_is_in_use(card)) 2346 return -EBUSY; 2347 2348 /* check if characteristic and get_timeout are supported */ 2349 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2350 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2351 return -EOPNOTSUPP; 2352 /* if card is ready, get timeout. Otherwise, just return stored value */ 2353 *timeout = card->options.vnicc.learning_timeout; 2354 if (qeth_card_hw_is_reachable(card)) 2355 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2356 IPA_VNICC_GET_TIMEOUT, 2357 timeout); 2358 2359 return rc; 2360 } 2361 2362 /* check if VNICC is currently enabled */ 2363 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 2364 { 2365 /* if everything is turned off, VNICC is not active */ 2366 if (!card->options.vnicc.cur_chars) 2367 return false; 2368 /* default values are only OK if rx_bcast was not enabled by user 2369 * or the card is offline. 2370 */ 2371 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 2372 if (!card->options.vnicc.rx_bcast_enabled || 2373 !qeth_card_hw_is_reachable(card)) 2374 return false; 2375 } 2376 return true; 2377 } 2378 2379 /* recover user timeout setting */ 2380 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 2381 u32 *timeout) 2382 { 2383 if (card->options.vnicc.sup_chars & vnicc && 2384 card->options.vnicc.getset_timeout_sup & vnicc && 2385 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 2386 timeout)) 2387 return false; 2388 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2389 return true; 2390 } 2391 2392 /* recover user characteristic setting */ 2393 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2394 bool enable) 2395 { 2396 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2397 2398 if (card->options.vnicc.sup_chars & vnicc && 2399 card->options.vnicc.set_char_sup & vnicc && 2400 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2401 return false; 2402 card->options.vnicc.wanted_chars &= ~vnicc; 2403 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2404 return true; 2405 } 2406 2407 /* (re-)initialize VNICC */ 2408 static void qeth_l2_vnicc_init(struct qeth_card *card) 2409 { 2410 u32 *timeout = &card->options.vnicc.learning_timeout; 2411 unsigned int chars_len, i; 2412 unsigned long chars_tmp; 2413 u32 sup_cmds, vnicc; 2414 bool enable, error; 2415 2416 QETH_CARD_TEXT(card, 2, "vniccini"); 2417 /* reset rx_bcast */ 2418 card->options.vnicc.rx_bcast_enabled = 0; 2419 /* initial query and storage of VNIC characteristics */ 2420 if (qeth_l2_vnicc_query_chars(card)) { 2421 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2422 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2423 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2424 /* fail quietly if user didn't change the default config */ 2425 card->options.vnicc.sup_chars = 0; 2426 card->options.vnicc.cur_chars = 0; 2427 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2428 return; 2429 } 2430 /* get supported commands for each supported characteristic */ 2431 chars_tmp = card->options.vnicc.sup_chars; 2432 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2433 for_each_set_bit(i, &chars_tmp, chars_len) { 2434 vnicc = BIT(i); 2435 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds); 2436 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) || 2437 !(sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2438 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2439 if (!(sup_cmds & IPA_VNICC_ENABLE) || 2440 !(sup_cmds & IPA_VNICC_DISABLE)) 2441 card->options.vnicc.set_char_sup &= ~vnicc; 2442 } 2443 /* enforce assumed default values and recover settings, if changed */ 2444 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2445 timeout); 2446 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; 2447 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; 2448 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2449 for_each_set_bit(i, &chars_tmp, chars_len) { 2450 vnicc = BIT(i); 2451 enable = card->options.vnicc.wanted_chars & vnicc; 2452 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2453 } 2454 if (error) 2455 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2456 } 2457 2458 /* configure default values of VNIC characteristics */ 2459 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2460 { 2461 /* characteristics values */ 2462 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2463 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2464 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2465 /* supported commands */ 2466 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2467 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2468 /* settings wanted by users */ 2469 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2470 } 2471 2472 module_init(qeth_l2_init); 2473 module_exit(qeth_l2_exit); 2474 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2475 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2476 MODULE_LICENSE("GPL"); 2477