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/ip.h> 21 #include <linux/list.h> 22 #include <linux/hash.h> 23 #include <linux/hashtable.h> 24 #include <asm/setup.h> 25 #include "qeth_core.h" 26 #include "qeth_l2.h" 27 28 static int qeth_l2_set_offline(struct ccwgroup_device *); 29 static int qeth_l2_stop(struct net_device *); 30 static void qeth_l2_set_rx_mode(struct net_device *); 31 static void qeth_bridgeport_query_support(struct qeth_card *card); 32 static void qeth_bridge_state_change(struct qeth_card *card, 33 struct qeth_ipa_cmd *cmd); 34 static void qeth_bridge_host_event(struct qeth_card *card, 35 struct qeth_ipa_cmd *cmd); 36 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); 37 static void qeth_l2_vnicc_init(struct qeth_card *card); 38 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 39 u32 *timeout); 40 41 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 42 { 43 struct qeth_card *card; 44 struct net_device *ndev; 45 __u16 temp_dev_no; 46 unsigned long flags; 47 struct ccw_dev_id read_devid; 48 49 ndev = NULL; 50 memcpy(&temp_dev_no, read_dev_no, 2); 51 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 52 list_for_each_entry(card, &qeth_core_card_list.list, list) { 53 ccw_device_get_id(CARD_RDEV(card), &read_devid); 54 if (read_devid.devno == temp_dev_no) { 55 ndev = card->dev; 56 break; 57 } 58 } 59 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 60 return ndev; 61 } 62 63 static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode) 64 { 65 int rc; 66 67 if (retcode) 68 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 69 switch (retcode) { 70 case IPA_RC_SUCCESS: 71 rc = 0; 72 break; 73 case IPA_RC_L2_UNSUPPORTED_CMD: 74 rc = -EOPNOTSUPP; 75 break; 76 case IPA_RC_L2_ADDR_TABLE_FULL: 77 rc = -ENOSPC; 78 break; 79 case IPA_RC_L2_DUP_MAC: 80 case IPA_RC_L2_DUP_LAYER3_MAC: 81 rc = -EEXIST; 82 break; 83 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 84 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 85 rc = -EPERM; 86 break; 87 case IPA_RC_L2_MAC_NOT_FOUND: 88 rc = -ENOENT; 89 break; 90 case -ENOMEM: 91 rc = -ENOMEM; 92 break; 93 default: 94 rc = -EIO; 95 break; 96 } 97 return rc; 98 } 99 100 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 101 enum qeth_ipa_cmds ipacmd) 102 { 103 struct qeth_ipa_cmd *cmd; 104 struct qeth_cmd_buffer *iob; 105 106 QETH_CARD_TEXT(card, 2, "L2sdmac"); 107 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 108 if (!iob) 109 return -ENOMEM; 110 cmd = __ipa_cmd(iob); 111 cmd->data.setdelmac.mac_length = ETH_ALEN; 112 ether_addr_copy(cmd->data.setdelmac.mac, mac); 113 return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob, 114 NULL, NULL)); 115 } 116 117 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 118 { 119 int rc; 120 121 QETH_CARD_TEXT(card, 2, "L2Setmac"); 122 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 123 if (rc == 0) { 124 dev_info(&card->gdev->dev, 125 "MAC address %pM successfully registered on device %s\n", 126 mac, card->dev->name); 127 } else { 128 switch (rc) { 129 case -EEXIST: 130 dev_warn(&card->gdev->dev, 131 "MAC address %pM already exists\n", mac); 132 break; 133 case -EPERM: 134 dev_warn(&card->gdev->dev, 135 "MAC address %pM is not authorized\n", mac); 136 break; 137 } 138 } 139 return rc; 140 } 141 142 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) 143 { 144 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ? 145 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC; 146 int rc; 147 148 QETH_CARD_TEXT(card, 2, "L2Wmac"); 149 rc = qeth_l2_send_setdelmac(card, mac, cmd); 150 if (rc == -EEXIST) 151 QETH_DBF_MESSAGE(2, "MAC %pM already registered on %s\n", 152 mac, QETH_CARD_IFNAME(card)); 153 else if (rc) 154 QETH_DBF_MESSAGE(2, "Failed to register MAC %pM on %s: %d\n", 155 mac, QETH_CARD_IFNAME(card), rc); 156 return rc; 157 } 158 159 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) 160 { 161 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ? 162 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; 163 int rc; 164 165 QETH_CARD_TEXT(card, 2, "L2Rmac"); 166 rc = qeth_l2_send_setdelmac(card, mac, cmd); 167 if (rc) 168 QETH_DBF_MESSAGE(2, "Failed to delete MAC %pM on %s: %d\n", 169 mac, QETH_CARD_IFNAME(card), rc); 170 return rc; 171 } 172 173 static void qeth_l2_del_all_macs(struct qeth_card *card) 174 { 175 struct qeth_mac *mac; 176 struct hlist_node *tmp; 177 int i; 178 179 spin_lock_bh(&card->mclock); 180 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 181 hash_del(&mac->hnode); 182 kfree(mac); 183 } 184 spin_unlock_bh(&card->mclock); 185 } 186 187 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 188 { 189 if (card->info.type == QETH_CARD_TYPE_OSN) 190 return RTN_UNSPEC; 191 if (is_broadcast_ether_addr(skb->data)) 192 return RTN_BROADCAST; 193 if (is_multicast_ether_addr(skb->data)) 194 return RTN_MULTICAST; 195 return RTN_UNSPEC; 196 } 197 198 static void qeth_l2_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr, 199 struct sk_buff *skb) 200 { 201 struct iphdr *iph = ip_hdr(skb); 202 203 /* tcph->check contains already the pseudo hdr checksum 204 * so just set the header flags 205 */ 206 if (iph->protocol == IPPROTO_UDP) 207 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; 208 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 209 QETH_HDR_EXT_CSUM_HDR_REQ; 210 iph->check = 0; 211 if (card->options.performance_stats) 212 card->perf_stats.tx_csum++; 213 } 214 215 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb, 216 int cast_type, unsigned int data_len) 217 { 218 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 219 220 memset(hdr, 0, sizeof(struct qeth_hdr)); 221 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 222 hdr->hdr.l2.pkt_length = data_len; 223 224 /* set byte byte 3 to casting flags */ 225 if (cast_type == RTN_MULTICAST) 226 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 227 else if (cast_type == RTN_BROADCAST) 228 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 229 else 230 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 231 232 /* VSWITCH relies on the VLAN 233 * information to be present in 234 * the QDIO header */ 235 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 236 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 237 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 238 } 239 } 240 241 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode) 242 { 243 if (retcode) 244 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 245 246 switch (retcode) { 247 case IPA_RC_SUCCESS: 248 return 0; 249 case IPA_RC_L2_INVALID_VLAN_ID: 250 return -EINVAL; 251 case IPA_RC_L2_DUP_VLAN_ID: 252 return -EEXIST; 253 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 254 return -ENOENT; 255 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 256 return -EPERM; 257 case -ENOMEM: 258 return -ENOMEM; 259 default: 260 return -EIO; 261 } 262 } 263 264 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 265 struct qeth_reply *reply, 266 unsigned long data) 267 { 268 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 269 270 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 271 if (cmd->hdr.return_code) { 272 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n", 273 cmd->data.setdelvlan.vlan_id, 274 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 275 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 276 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 277 } 278 return 0; 279 } 280 281 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 282 enum qeth_ipa_cmds ipacmd) 283 { 284 struct qeth_ipa_cmd *cmd; 285 struct qeth_cmd_buffer *iob; 286 287 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 288 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 289 if (!iob) 290 return -ENOMEM; 291 cmd = __ipa_cmd(iob); 292 cmd->data.setdelvlan.vlan_id = i; 293 return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob, 294 qeth_l2_send_setdelvlan_cb, NULL)); 295 } 296 297 static void qeth_l2_process_vlans(struct qeth_card *card) 298 { 299 struct qeth_vlan_vid *id; 300 QETH_CARD_TEXT(card, 3, "L2prcvln"); 301 spin_lock_bh(&card->vlanlock); 302 list_for_each_entry(id, &card->vid_list, list) { 303 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 304 } 305 spin_unlock_bh(&card->vlanlock); 306 } 307 308 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 309 __be16 proto, u16 vid) 310 { 311 struct qeth_card *card = dev->ml_priv; 312 struct qeth_vlan_vid *id; 313 int rc; 314 315 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 316 if (!vid) 317 return 0; 318 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 319 QETH_CARD_TEXT(card, 3, "aidREC"); 320 return 0; 321 } 322 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 323 if (id) { 324 id->vid = vid; 325 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 326 if (rc) { 327 kfree(id); 328 return rc; 329 } 330 spin_lock_bh(&card->vlanlock); 331 list_add_tail(&id->list, &card->vid_list); 332 spin_unlock_bh(&card->vlanlock); 333 } else { 334 return -ENOMEM; 335 } 336 return 0; 337 } 338 339 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 340 __be16 proto, u16 vid) 341 { 342 struct qeth_vlan_vid *id, *tmpid = NULL; 343 struct qeth_card *card = dev->ml_priv; 344 int rc = 0; 345 346 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 347 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 348 QETH_CARD_TEXT(card, 3, "kidREC"); 349 return 0; 350 } 351 spin_lock_bh(&card->vlanlock); 352 list_for_each_entry(id, &card->vid_list, list) { 353 if (id->vid == vid) { 354 list_del(&id->list); 355 tmpid = id; 356 break; 357 } 358 } 359 spin_unlock_bh(&card->vlanlock); 360 if (tmpid) { 361 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 362 kfree(tmpid); 363 } 364 qeth_l2_set_rx_mode(card->dev); 365 return rc; 366 } 367 368 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 369 { 370 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 371 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 372 373 qeth_set_allowed_threads(card, 0, 1); 374 if (card->read.state == CH_STATE_UP && 375 card->write.state == CH_STATE_UP && 376 (card->state == CARD_STATE_UP)) { 377 if (recovery_mode && 378 card->info.type != QETH_CARD_TYPE_OSN) { 379 qeth_l2_stop(card->dev); 380 } else { 381 rtnl_lock(); 382 dev_close(card->dev); 383 rtnl_unlock(); 384 } 385 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 386 card->state = CARD_STATE_SOFTSETUP; 387 } 388 if (card->state == CARD_STATE_SOFTSETUP) { 389 qeth_l2_del_all_macs(card); 390 qeth_clear_ipacmd_list(card); 391 card->state = CARD_STATE_HARDSETUP; 392 } 393 if (card->state == CARD_STATE_HARDSETUP) { 394 qeth_qdio_clear_card(card, 0); 395 qeth_clear_qdio_buffers(card); 396 qeth_clear_working_pool_list(card); 397 card->state = CARD_STATE_DOWN; 398 } 399 if (card->state == CARD_STATE_DOWN) { 400 qeth_clear_cmd_buffers(&card->read); 401 qeth_clear_cmd_buffers(&card->write); 402 } 403 } 404 405 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 406 int budget, int *done) 407 { 408 int work_done = 0; 409 struct sk_buff *skb; 410 struct qeth_hdr *hdr; 411 unsigned int len; 412 413 *done = 0; 414 WARN_ON_ONCE(!budget); 415 while (budget) { 416 skb = qeth_core_get_next_skb(card, 417 &card->qdio.in_q->bufs[card->rx.b_index], 418 &card->rx.b_element, &card->rx.e_offset, &hdr); 419 if (!skb) { 420 *done = 1; 421 break; 422 } 423 switch (hdr->hdr.l2.id) { 424 case QETH_HEADER_TYPE_LAYER2: 425 skb->protocol = eth_type_trans(skb, skb->dev); 426 if ((card->dev->features & NETIF_F_RXCSUM) 427 && ((hdr->hdr.l2.flags[1] & 428 (QETH_HDR_EXT_CSUM_HDR_REQ | 429 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 430 (QETH_HDR_EXT_CSUM_HDR_REQ | 431 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 432 skb->ip_summed = CHECKSUM_UNNECESSARY; 433 else 434 skb->ip_summed = CHECKSUM_NONE; 435 if (skb->protocol == htons(ETH_P_802_2)) 436 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 437 len = skb->len; 438 napi_gro_receive(&card->napi, skb); 439 break; 440 case QETH_HEADER_TYPE_OSN: 441 if (card->info.type == QETH_CARD_TYPE_OSN) { 442 skb_push(skb, sizeof(struct qeth_hdr)); 443 skb_copy_to_linear_data(skb, hdr, 444 sizeof(struct qeth_hdr)); 445 len = skb->len; 446 card->osn_info.data_cb(skb); 447 break; 448 } 449 /* else unknown */ 450 default: 451 dev_kfree_skb_any(skb); 452 QETH_CARD_TEXT(card, 3, "inbunkno"); 453 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 454 continue; 455 } 456 work_done++; 457 budget--; 458 card->stats.rx_packets++; 459 card->stats.rx_bytes += len; 460 } 461 return work_done; 462 } 463 464 static int qeth_l2_request_initial_mac(struct qeth_card *card) 465 { 466 int rc = 0; 467 char vendor_pre[] = {0x02, 0x00, 0x00}; 468 469 QETH_DBF_TEXT(SETUP, 2, "l2reqmac"); 470 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 471 472 if (MACHINE_IS_VM) { 473 rc = qeth_vm_request_mac(card); 474 if (!rc) 475 goto out; 476 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n", 477 CARD_BUS_ID(card), rc); 478 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc); 479 /* fall back to alternative mechanism: */ 480 } 481 482 if (card->info.type == QETH_CARD_TYPE_IQD || 483 card->info.type == QETH_CARD_TYPE_OSM || 484 card->info.type == QETH_CARD_TYPE_OSX || 485 card->info.guestlan) { 486 rc = qeth_setadpparms_change_macaddr(card); 487 if (rc) { 488 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 489 "device %s: x%x\n", CARD_BUS_ID(card), rc); 490 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 491 return rc; 492 } 493 } else { 494 eth_random_addr(card->dev->dev_addr); 495 memcpy(card->dev->dev_addr, vendor_pre, 3); 496 } 497 out: 498 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len); 499 return 0; 500 } 501 502 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 503 { 504 struct sockaddr *addr = p; 505 struct qeth_card *card = dev->ml_priv; 506 u8 old_addr[ETH_ALEN]; 507 int rc = 0; 508 509 QETH_CARD_TEXT(card, 3, "setmac"); 510 511 if (card->info.type == QETH_CARD_TYPE_OSN || 512 card->info.type == QETH_CARD_TYPE_OSM || 513 card->info.type == QETH_CARD_TYPE_OSX) { 514 QETH_CARD_TEXT(card, 3, "setmcTYP"); 515 return -EOPNOTSUPP; 516 } 517 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 518 if (!is_valid_ether_addr(addr->sa_data)) 519 return -EADDRNOTAVAIL; 520 521 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 522 QETH_CARD_TEXT(card, 3, "setmcREC"); 523 return -ERESTARTSYS; 524 } 525 526 if (!qeth_card_hw_is_reachable(card)) { 527 ether_addr_copy(dev->dev_addr, addr->sa_data); 528 return 0; 529 } 530 531 /* don't register the same address twice */ 532 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) && 533 (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 534 return 0; 535 536 /* add the new address, switch over, drop the old */ 537 rc = qeth_l2_send_setmac(card, addr->sa_data); 538 if (rc) 539 return rc; 540 ether_addr_copy(old_addr, dev->dev_addr); 541 ether_addr_copy(dev->dev_addr, addr->sa_data); 542 543 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) 544 qeth_l2_remove_mac(card, old_addr); 545 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 546 return 0; 547 } 548 549 static void qeth_promisc_to_bridge(struct qeth_card *card) 550 { 551 struct net_device *dev = card->dev; 552 enum qeth_ipa_promisc_modes promisc_mode; 553 int role; 554 int rc; 555 556 QETH_CARD_TEXT(card, 3, "pmisc2br"); 557 558 if (!card->options.sbp.reflect_promisc) 559 return; 560 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 561 : SET_PROMISC_MODE_OFF; 562 if (promisc_mode == card->info.promisc_mode) 563 return; 564 565 if (promisc_mode == SET_PROMISC_MODE_ON) { 566 if (card->options.sbp.reflect_promisc_primary) 567 role = QETH_SBP_ROLE_PRIMARY; 568 else 569 role = QETH_SBP_ROLE_SECONDARY; 570 } else 571 role = QETH_SBP_ROLE_NONE; 572 573 rc = qeth_bridgeport_setrole(card, role); 574 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 575 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 576 if (!rc) { 577 card->options.sbp.role = role; 578 card->info.promisc_mode = promisc_mode; 579 } 580 581 } 582 /* New MAC address is added to the hash table and marked to be written on card 583 * only if there is not in the hash table storage already 584 * 585 */ 586 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 587 { 588 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 589 struct qeth_mac *mac; 590 591 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 592 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 593 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 594 return; 595 } 596 } 597 598 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 599 if (!mac) 600 return; 601 602 ether_addr_copy(mac->mac_addr, ha->addr); 603 mac->disp_flag = QETH_DISP_ADDR_ADD; 604 605 hash_add(card->mac_htable, &mac->hnode, mac_hash); 606 } 607 608 static void qeth_l2_set_rx_mode(struct net_device *dev) 609 { 610 struct qeth_card *card = dev->ml_priv; 611 struct netdev_hw_addr *ha; 612 struct qeth_mac *mac; 613 struct hlist_node *tmp; 614 int i; 615 int rc; 616 617 if (card->info.type == QETH_CARD_TYPE_OSN) 618 return; 619 620 QETH_CARD_TEXT(card, 3, "setmulti"); 621 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 622 (card->state != CARD_STATE_UP)) 623 return; 624 625 spin_lock_bh(&card->mclock); 626 627 netdev_for_each_mc_addr(ha, dev) 628 qeth_l2_add_mac(card, ha); 629 netdev_for_each_uc_addr(ha, dev) 630 qeth_l2_add_mac(card, ha); 631 632 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 633 switch (mac->disp_flag) { 634 case QETH_DISP_ADDR_DELETE: 635 qeth_l2_remove_mac(card, mac->mac_addr); 636 hash_del(&mac->hnode); 637 kfree(mac); 638 break; 639 case QETH_DISP_ADDR_ADD: 640 rc = qeth_l2_write_mac(card, mac->mac_addr); 641 if (rc) { 642 hash_del(&mac->hnode); 643 kfree(mac); 644 break; 645 } 646 /* fall through */ 647 default: 648 /* for next call to set_rx_mode(): */ 649 mac->disp_flag = QETH_DISP_ADDR_DELETE; 650 } 651 } 652 653 spin_unlock_bh(&card->mclock); 654 655 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 656 qeth_setadp_promisc_mode(card); 657 else 658 qeth_promisc_to_bridge(card); 659 } 660 661 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb, 662 struct qeth_qdio_out_q *queue, int cast_type) 663 { 664 unsigned int data_offset = ETH_HLEN; 665 struct qeth_hdr *hdr; 666 int rc; 667 668 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 669 if (!hdr) 670 return -ENOMEM; 671 qeth_l2_fill_header(hdr, skb, cast_type, skb->len); 672 skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr), 673 data_offset); 674 675 if (!qeth_get_elements_no(card, skb, 1, data_offset)) { 676 rc = -E2BIG; 677 goto out; 678 } 679 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, 680 sizeof(*hdr) + data_offset); 681 out: 682 if (rc) 683 kmem_cache_free(qeth_core_header_cache, hdr); 684 return rc; 685 } 686 687 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb, 688 struct qeth_qdio_out_q *queue, int cast_type) 689 { 690 int push_len = sizeof(struct qeth_hdr); 691 unsigned int elements, nr_frags; 692 unsigned int hdr_elements = 0; 693 struct qeth_hdr *hdr = NULL; 694 unsigned int hd_len = 0; 695 int rc; 696 697 /* fix hardware limitation: as long as we do not have sbal 698 * chaining we can not send long frag lists 699 */ 700 if (!qeth_get_elements_no(card, skb, 0, 0)) { 701 rc = skb_linearize(skb); 702 703 if (card->options.performance_stats) { 704 if (rc) 705 card->perf_stats.tx_linfail++; 706 else 707 card->perf_stats.tx_lin++; 708 } 709 if (rc) 710 return rc; 711 } 712 nr_frags = skb_shinfo(skb)->nr_frags; 713 714 rc = skb_cow_head(skb, push_len); 715 if (rc) 716 return rc; 717 push_len = qeth_push_hdr(skb, &hdr, push_len); 718 if (push_len < 0) 719 return push_len; 720 if (!push_len) { 721 /* hdr was allocated from cache */ 722 hd_len = sizeof(*hdr); 723 hdr_elements = 1; 724 } 725 qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len); 726 if (skb->ip_summed == CHECKSUM_PARTIAL) 727 qeth_l2_hdr_csum(card, hdr, skb); 728 729 elements = qeth_get_elements_no(card, skb, hdr_elements, 0); 730 if (!elements) { 731 rc = -E2BIG; 732 goto out; 733 } 734 elements += hdr_elements; 735 736 /* TODO: remove the skb_orphan() once TX completion is fast enough */ 737 skb_orphan(skb); 738 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements); 739 out: 740 if (!rc) { 741 if (card->options.performance_stats && nr_frags) { 742 card->perf_stats.sg_skbs_sent++; 743 /* nr_frags + skb->data */ 744 card->perf_stats.sg_frags_sent += nr_frags + 1; 745 } 746 } else { 747 if (hd_len) 748 kmem_cache_free(qeth_core_header_cache, hdr); 749 if (rc == -EBUSY) 750 /* roll back to ETH header */ 751 skb_pull(skb, push_len); 752 } 753 return rc; 754 } 755 756 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 757 struct qeth_qdio_out_q *queue) 758 { 759 unsigned int elements; 760 struct qeth_hdr *hdr; 761 762 if (skb->protocol == htons(ETH_P_IPV6)) 763 return -EPROTONOSUPPORT; 764 765 hdr = (struct qeth_hdr *)skb->data; 766 elements = qeth_get_elements_no(card, skb, 0, 0); 767 if (!elements) 768 return -E2BIG; 769 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr))) 770 return -EINVAL; 771 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements); 772 } 773 774 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 775 struct net_device *dev) 776 { 777 struct qeth_card *card = dev->ml_priv; 778 int cast_type = qeth_l2_get_cast_type(card, skb); 779 struct qeth_qdio_out_q *queue; 780 int tx_bytes = skb->len; 781 int rc; 782 783 if (card->qdio.do_prio_queueing || (cast_type && 784 card->info.is_multicast_different)) 785 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 786 qeth_get_ip_version(skb), cast_type)]; 787 else 788 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 789 790 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 791 card->stats.tx_carrier_errors++; 792 goto tx_drop; 793 } 794 795 if (card->options.performance_stats) { 796 card->perf_stats.outbound_cnt++; 797 card->perf_stats.outbound_start_time = qeth_get_micros(); 798 } 799 netif_stop_queue(dev); 800 801 switch (card->info.type) { 802 case QETH_CARD_TYPE_OSN: 803 rc = qeth_l2_xmit_osn(card, skb, queue); 804 break; 805 case QETH_CARD_TYPE_IQD: 806 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type); 807 break; 808 default: 809 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type); 810 } 811 812 if (!rc) { 813 card->stats.tx_packets++; 814 card->stats.tx_bytes += tx_bytes; 815 if (card->options.performance_stats) 816 card->perf_stats.outbound_time += qeth_get_micros() - 817 card->perf_stats.outbound_start_time; 818 netif_wake_queue(dev); 819 return NETDEV_TX_OK; 820 } else if (rc == -EBUSY) { 821 return NETDEV_TX_BUSY; 822 } /* else fall through */ 823 824 tx_drop: 825 card->stats.tx_dropped++; 826 card->stats.tx_errors++; 827 dev_kfree_skb_any(skb); 828 netif_wake_queue(dev); 829 return NETDEV_TX_OK; 830 } 831 832 static int __qeth_l2_open(struct net_device *dev) 833 { 834 struct qeth_card *card = dev->ml_priv; 835 int rc = 0; 836 837 QETH_CARD_TEXT(card, 4, "qethopen"); 838 if (card->state == CARD_STATE_UP) 839 return rc; 840 if (card->state != CARD_STATE_SOFTSETUP) 841 return -ENODEV; 842 843 if ((card->info.type != QETH_CARD_TYPE_OSN) && 844 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 845 QETH_CARD_TEXT(card, 4, "nomacadr"); 846 return -EPERM; 847 } 848 card->data.state = CH_STATE_UP; 849 card->state = CARD_STATE_UP; 850 netif_start_queue(dev); 851 852 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 853 napi_enable(&card->napi); 854 napi_schedule(&card->napi); 855 } else 856 rc = -EIO; 857 return rc; 858 } 859 860 static int qeth_l2_open(struct net_device *dev) 861 { 862 struct qeth_card *card = dev->ml_priv; 863 864 QETH_CARD_TEXT(card, 5, "qethope_"); 865 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 866 QETH_CARD_TEXT(card, 3, "openREC"); 867 return -ERESTARTSYS; 868 } 869 return __qeth_l2_open(dev); 870 } 871 872 static int qeth_l2_stop(struct net_device *dev) 873 { 874 struct qeth_card *card = dev->ml_priv; 875 876 QETH_CARD_TEXT(card, 4, "qethstop"); 877 netif_tx_disable(dev); 878 if (card->state == CARD_STATE_UP) { 879 card->state = CARD_STATE_SOFTSETUP; 880 napi_disable(&card->napi); 881 } 882 return 0; 883 } 884 885 static const struct device_type qeth_l2_devtype = { 886 .name = "qeth_layer2", 887 .groups = qeth_l2_attr_groups, 888 }; 889 890 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 891 { 892 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 893 int rc; 894 895 if (gdev->dev.type == &qeth_generic_devtype) { 896 rc = qeth_l2_create_device_attributes(&gdev->dev); 897 if (rc) 898 return rc; 899 } 900 INIT_LIST_HEAD(&card->vid_list); 901 hash_init(card->mac_htable); 902 card->options.layer2 = 1; 903 card->info.hwtrap = 0; 904 qeth_l2_vnicc_set_defaults(card); 905 return 0; 906 } 907 908 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 909 { 910 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 911 912 if (cgdev->dev.type == &qeth_generic_devtype) 913 qeth_l2_remove_device_attributes(&cgdev->dev); 914 qeth_set_allowed_threads(card, 0, 1); 915 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 916 917 if (cgdev->state == CCWGROUP_ONLINE) 918 qeth_l2_set_offline(cgdev); 919 920 if (card->dev) { 921 unregister_netdev(card->dev); 922 free_netdev(card->dev); 923 card->dev = NULL; 924 } 925 return; 926 } 927 928 static const struct ethtool_ops qeth_l2_ethtool_ops = { 929 .get_link = ethtool_op_get_link, 930 .get_strings = qeth_core_get_strings, 931 .get_ethtool_stats = qeth_core_get_ethtool_stats, 932 .get_sset_count = qeth_core_get_sset_count, 933 .get_drvinfo = qeth_core_get_drvinfo, 934 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 935 }; 936 937 static const struct ethtool_ops qeth_l2_osn_ops = { 938 .get_strings = qeth_core_get_strings, 939 .get_ethtool_stats = qeth_core_get_ethtool_stats, 940 .get_sset_count = qeth_core_get_sset_count, 941 .get_drvinfo = qeth_core_get_drvinfo, 942 }; 943 944 static const struct net_device_ops qeth_l2_netdev_ops = { 945 .ndo_open = qeth_l2_open, 946 .ndo_stop = qeth_l2_stop, 947 .ndo_get_stats = qeth_get_stats, 948 .ndo_start_xmit = qeth_l2_hard_start_xmit, 949 .ndo_features_check = qeth_features_check, 950 .ndo_validate_addr = eth_validate_addr, 951 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 952 .ndo_do_ioctl = qeth_do_ioctl, 953 .ndo_set_mac_address = qeth_l2_set_mac_address, 954 .ndo_change_mtu = qeth_change_mtu, 955 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 956 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 957 .ndo_tx_timeout = qeth_tx_timeout, 958 .ndo_fix_features = qeth_fix_features, 959 .ndo_set_features = qeth_set_features 960 }; 961 962 static int qeth_l2_setup_netdev(struct qeth_card *card) 963 { 964 switch (card->info.type) { 965 case QETH_CARD_TYPE_IQD: 966 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 967 ether_setup); 968 break; 969 case QETH_CARD_TYPE_OSN: 970 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 971 ether_setup); 972 break; 973 default: 974 card->dev = alloc_etherdev(0); 975 } 976 977 if (!card->dev) 978 return -ENODEV; 979 980 card->dev->ml_priv = card; 981 card->dev->priv_flags |= IFF_UNICAST_FLT; 982 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 983 card->dev->mtu = card->info.initial_mtu; 984 card->dev->min_mtu = 64; 985 card->dev->max_mtu = ETH_MAX_MTU; 986 card->dev->netdev_ops = &qeth_l2_netdev_ops; 987 if (card->info.type == QETH_CARD_TYPE_OSN) { 988 card->dev->ethtool_ops = &qeth_l2_osn_ops; 989 card->dev->flags |= IFF_NOARP; 990 } else { 991 card->dev->ethtool_ops = &qeth_l2_ethtool_ops; 992 } 993 994 if (card->info.type == QETH_CARD_TYPE_OSM) 995 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 996 else 997 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 998 999 if (card->info.type != QETH_CARD_TYPE_OSN && 1000 card->info.type != QETH_CARD_TYPE_IQD) { 1001 card->dev->priv_flags &= ~IFF_TX_SKB_SHARING; 1002 card->dev->needed_headroom = sizeof(struct qeth_hdr); 1003 card->dev->hw_features |= NETIF_F_SG; 1004 card->dev->vlan_features |= NETIF_F_SG; 1005 } 1006 1007 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 1008 card->dev->features |= NETIF_F_SG; 1009 /* OSA 3S and earlier has no RX/TX support */ 1010 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 1011 card->dev->hw_features |= NETIF_F_IP_CSUM; 1012 card->dev->vlan_features |= NETIF_F_IP_CSUM; 1013 } 1014 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 1015 card->dev->hw_features |= NETIF_F_RXCSUM; 1016 card->dev->vlan_features |= NETIF_F_RXCSUM; 1017 } 1018 } 1019 1020 card->info.broadcast_capable = 1; 1021 qeth_l2_request_initial_mac(card); 1022 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1023 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 1024 netif_carrier_off(card->dev); 1025 return register_netdev(card->dev); 1026 } 1027 1028 static int qeth_l2_start_ipassists(struct qeth_card *card) 1029 { 1030 /* configure isolation level */ 1031 if (qeth_set_access_ctrl_online(card, 0)) 1032 return -ENODEV; 1033 return 0; 1034 } 1035 1036 static void qeth_l2_trace_features(struct qeth_card *card) 1037 { 1038 /* Set BridgePort features */ 1039 QETH_CARD_TEXT(card, 2, "featuSBP"); 1040 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 1041 sizeof(card->options.sbp.supported_funcs)); 1042 /* VNIC Characteristics features */ 1043 QETH_CARD_TEXT(card, 2, "feaVNICC"); 1044 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 1045 sizeof(card->options.vnicc.sup_chars)); 1046 } 1047 1048 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1049 { 1050 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1051 int rc = 0; 1052 enum qeth_card_states recover_flag; 1053 1054 mutex_lock(&card->discipline_mutex); 1055 mutex_lock(&card->conf_mutex); 1056 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1057 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1058 1059 recover_flag = card->state; 1060 rc = qeth_core_hardsetup_card(card); 1061 if (rc) { 1062 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1063 rc = -ENODEV; 1064 goto out_remove; 1065 } 1066 qeth_bridgeport_query_support(card); 1067 if (card->options.sbp.supported_funcs) 1068 dev_info(&card->gdev->dev, 1069 "The device represents a Bridge Capable Port\n"); 1070 1071 if (!card->dev && qeth_l2_setup_netdev(card)) { 1072 rc = -ENODEV; 1073 goto out_remove; 1074 } 1075 1076 if (card->info.type != QETH_CARD_TYPE_OSN && 1077 !qeth_l2_send_setmac(card, card->dev->dev_addr)) 1078 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 1079 1080 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1081 if (card->info.hwtrap && 1082 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1083 card->info.hwtrap = 0; 1084 } else 1085 card->info.hwtrap = 0; 1086 1087 /* for the rx_bcast characteristic, init VNICC after setmac */ 1088 qeth_l2_vnicc_init(card); 1089 1090 qeth_trace_features(card); 1091 qeth_l2_trace_features(card); 1092 1093 qeth_l2_setup_bridgeport_attrs(card); 1094 1095 card->state = CARD_STATE_HARDSETUP; 1096 qeth_print_status_message(card); 1097 1098 /* softsetup */ 1099 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1100 1101 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1102 (card->info.type == QETH_CARD_TYPE_OSX)) { 1103 rc = qeth_l2_start_ipassists(card); 1104 if (rc) 1105 goto out_remove; 1106 } 1107 1108 if (card->info.type != QETH_CARD_TYPE_OSN) 1109 qeth_l2_process_vlans(card); 1110 1111 netif_tx_disable(card->dev); 1112 1113 rc = qeth_init_qdio_queues(card); 1114 if (rc) { 1115 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1116 rc = -ENODEV; 1117 goto out_remove; 1118 } 1119 card->state = CARD_STATE_SOFTSETUP; 1120 if (card->lan_online) 1121 netif_carrier_on(card->dev); 1122 else 1123 netif_carrier_off(card->dev); 1124 1125 qeth_set_allowed_threads(card, 0xffffffff, 0); 1126 if (recover_flag == CARD_STATE_RECOVER) { 1127 if (recovery_mode && 1128 card->info.type != QETH_CARD_TYPE_OSN) { 1129 __qeth_l2_open(card->dev); 1130 } else { 1131 rtnl_lock(); 1132 dev_open(card->dev); 1133 rtnl_unlock(); 1134 } 1135 /* this also sets saved unicast addresses */ 1136 qeth_l2_set_rx_mode(card->dev); 1137 rtnl_lock(); 1138 qeth_recover_features(card->dev); 1139 rtnl_unlock(); 1140 } 1141 /* let user_space know that device is online */ 1142 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1143 mutex_unlock(&card->conf_mutex); 1144 mutex_unlock(&card->discipline_mutex); 1145 return 0; 1146 1147 out_remove: 1148 qeth_l2_stop_card(card, 0); 1149 ccw_device_set_offline(CARD_DDEV(card)); 1150 ccw_device_set_offline(CARD_WDEV(card)); 1151 ccw_device_set_offline(CARD_RDEV(card)); 1152 qdio_free(CARD_DDEV(card)); 1153 if (recover_flag == CARD_STATE_RECOVER) 1154 card->state = CARD_STATE_RECOVER; 1155 else 1156 card->state = CARD_STATE_DOWN; 1157 mutex_unlock(&card->conf_mutex); 1158 mutex_unlock(&card->discipline_mutex); 1159 return rc; 1160 } 1161 1162 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1163 { 1164 return __qeth_l2_set_online(gdev, 0); 1165 } 1166 1167 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1168 int recovery_mode) 1169 { 1170 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1171 int rc = 0, rc2 = 0, rc3 = 0; 1172 enum qeth_card_states recover_flag; 1173 1174 mutex_lock(&card->discipline_mutex); 1175 mutex_lock(&card->conf_mutex); 1176 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1177 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1178 1179 if (card->dev && netif_carrier_ok(card->dev)) 1180 netif_carrier_off(card->dev); 1181 recover_flag = card->state; 1182 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1183 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1184 card->info.hwtrap = 1; 1185 } 1186 qeth_l2_stop_card(card, recovery_mode); 1187 rc = ccw_device_set_offline(CARD_DDEV(card)); 1188 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1189 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1190 if (!rc) 1191 rc = (rc2) ? rc2 : rc3; 1192 if (rc) 1193 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1194 qdio_free(CARD_DDEV(card)); 1195 if (recover_flag == CARD_STATE_UP) 1196 card->state = CARD_STATE_RECOVER; 1197 /* let user_space know that device is offline */ 1198 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1199 mutex_unlock(&card->conf_mutex); 1200 mutex_unlock(&card->discipline_mutex); 1201 return 0; 1202 } 1203 1204 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1205 { 1206 return __qeth_l2_set_offline(cgdev, 0); 1207 } 1208 1209 static int qeth_l2_recover(void *ptr) 1210 { 1211 struct qeth_card *card; 1212 int rc = 0; 1213 1214 card = (struct qeth_card *) ptr; 1215 QETH_CARD_TEXT(card, 2, "recover1"); 1216 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1217 return 0; 1218 QETH_CARD_TEXT(card, 2, "recover2"); 1219 dev_warn(&card->gdev->dev, 1220 "A recovery process has been started for the device\n"); 1221 qeth_set_recovery_task(card); 1222 __qeth_l2_set_offline(card->gdev, 1); 1223 rc = __qeth_l2_set_online(card->gdev, 1); 1224 if (!rc) 1225 dev_info(&card->gdev->dev, 1226 "Device successfully recovered!\n"); 1227 else { 1228 qeth_close_dev(card); 1229 dev_warn(&card->gdev->dev, "The qeth device driver " 1230 "failed to recover an error on the device\n"); 1231 } 1232 qeth_clear_recovery_task(card); 1233 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1234 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1235 return 0; 1236 } 1237 1238 static int __init qeth_l2_init(void) 1239 { 1240 pr_info("register layer 2 discipline\n"); 1241 return 0; 1242 } 1243 1244 static void __exit qeth_l2_exit(void) 1245 { 1246 pr_info("unregister layer 2 discipline\n"); 1247 } 1248 1249 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1250 { 1251 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1252 1253 if (card->dev) 1254 netif_device_detach(card->dev); 1255 qeth_set_allowed_threads(card, 0, 1); 1256 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1257 if (gdev->state == CCWGROUP_OFFLINE) 1258 return 0; 1259 if (card->state == CARD_STATE_UP) { 1260 if (card->info.hwtrap) 1261 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1262 __qeth_l2_set_offline(card->gdev, 1); 1263 } else 1264 __qeth_l2_set_offline(card->gdev, 0); 1265 return 0; 1266 } 1267 1268 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1269 { 1270 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1271 int rc = 0; 1272 1273 if (gdev->state == CCWGROUP_OFFLINE) 1274 goto out; 1275 1276 if (card->state == CARD_STATE_RECOVER) { 1277 rc = __qeth_l2_set_online(card->gdev, 1); 1278 if (rc) { 1279 rtnl_lock(); 1280 dev_close(card->dev); 1281 rtnl_unlock(); 1282 } 1283 } else 1284 rc = __qeth_l2_set_online(card->gdev, 0); 1285 out: 1286 qeth_set_allowed_threads(card, 0xffffffff, 0); 1287 if (card->dev) 1288 netif_device_attach(card->dev); 1289 if (rc) 1290 dev_warn(&card->gdev->dev, "The qeth device driver " 1291 "failed to recover an error on the device\n"); 1292 return rc; 1293 } 1294 1295 /* Returns zero if the command is successfully "consumed" */ 1296 static int qeth_l2_control_event(struct qeth_card *card, 1297 struct qeth_ipa_cmd *cmd) 1298 { 1299 switch (cmd->hdr.command) { 1300 case IPA_CMD_SETBRIDGEPORT_OSA: 1301 case IPA_CMD_SETBRIDGEPORT_IQD: 1302 if (cmd->data.sbp.hdr.command_code == 1303 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1304 qeth_bridge_state_change(card, cmd); 1305 return 0; 1306 } else 1307 return 1; 1308 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1309 qeth_bridge_host_event(card, cmd); 1310 return 0; 1311 default: 1312 return 1; 1313 } 1314 } 1315 1316 struct qeth_discipline qeth_l2_discipline = { 1317 .devtype = &qeth_l2_devtype, 1318 .start_poll = qeth_qdio_start_poll, 1319 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1320 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1321 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1322 .recover = qeth_l2_recover, 1323 .setup = qeth_l2_probe_device, 1324 .remove = qeth_l2_remove_device, 1325 .set_online = qeth_l2_set_online, 1326 .set_offline = qeth_l2_set_offline, 1327 .freeze = qeth_l2_pm_suspend, 1328 .thaw = qeth_l2_pm_resume, 1329 .restore = qeth_l2_pm_resume, 1330 .do_ioctl = NULL, 1331 .control_event_handler = qeth_l2_control_event, 1332 }; 1333 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1334 1335 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1336 struct qeth_cmd_buffer *iob) 1337 { 1338 unsigned long flags; 1339 int rc = 0; 1340 1341 QETH_CARD_TEXT(card, 5, "osndctrd"); 1342 1343 wait_event(card->wait_q, 1344 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1345 qeth_prepare_control_data(card, len, iob); 1346 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1347 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1348 rc = ccw_device_start_timeout(CARD_WDEV(card), &card->write.ccw, 1349 (addr_t) iob, 0, 0, QETH_IPA_TIMEOUT); 1350 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1351 if (rc) { 1352 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1353 "ccw_device_start rc = %i\n", rc); 1354 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1355 qeth_release_buffer(iob->channel, iob); 1356 atomic_set(&card->write.irq_pending, 0); 1357 wake_up(&card->wait_q); 1358 } 1359 return rc; 1360 } 1361 1362 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1363 struct qeth_cmd_buffer *iob, int data_len) 1364 { 1365 u16 s1, s2; 1366 1367 QETH_CARD_TEXT(card, 4, "osndipa"); 1368 1369 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1370 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1371 s2 = (u16)data_len; 1372 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1373 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1374 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1375 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1376 return qeth_osn_send_control_data(card, s1, iob); 1377 } 1378 1379 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1380 { 1381 struct qeth_cmd_buffer *iob; 1382 struct qeth_card *card; 1383 1384 if (!dev) 1385 return -ENODEV; 1386 card = dev->ml_priv; 1387 if (!card) 1388 return -ENODEV; 1389 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1390 if (!qeth_card_hw_is_reachable(card)) 1391 return -ENODEV; 1392 iob = qeth_wait_for_buffer(&card->write); 1393 memcpy(__ipa_cmd(iob), data, data_len); 1394 return qeth_osn_send_ipa_cmd(card, iob, data_len); 1395 } 1396 EXPORT_SYMBOL(qeth_osn_assist); 1397 1398 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1399 int (*assist_cb)(struct net_device *, void *), 1400 int (*data_cb)(struct sk_buff *)) 1401 { 1402 struct qeth_card *card; 1403 1404 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1405 if (*dev == NULL) 1406 return -ENODEV; 1407 card = (*dev)->ml_priv; 1408 if (!card) 1409 return -ENODEV; 1410 QETH_CARD_TEXT(card, 2, "osnreg"); 1411 if ((assist_cb == NULL) || (data_cb == NULL)) 1412 return -EINVAL; 1413 card->osn_info.assist_cb = assist_cb; 1414 card->osn_info.data_cb = data_cb; 1415 return 0; 1416 } 1417 EXPORT_SYMBOL(qeth_osn_register); 1418 1419 void qeth_osn_deregister(struct net_device *dev) 1420 { 1421 struct qeth_card *card; 1422 1423 if (!dev) 1424 return; 1425 card = dev->ml_priv; 1426 if (!card) 1427 return; 1428 QETH_CARD_TEXT(card, 2, "osndereg"); 1429 card->osn_info.assist_cb = NULL; 1430 card->osn_info.data_cb = NULL; 1431 return; 1432 } 1433 EXPORT_SYMBOL(qeth_osn_deregister); 1434 1435 /* SETBRIDGEPORT support, async notifications */ 1436 1437 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1438 1439 /** 1440 * qeth_bridge_emit_host_event() - bridgeport address change notification 1441 * @card: qeth_card structure pointer, for udev events. 1442 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1443 * and reset token and addr_lnid are unused and may be NULL. 1444 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1445 * object, 0 - addition of an object. 1446 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1447 * @token: "network token" structure identifying physical address of the port. 1448 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1449 * 1450 * This function is called when registrations and deregistrations are 1451 * reported by the hardware, and also when notifications are enabled - 1452 * for all currently registered addresses. 1453 */ 1454 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1455 enum qeth_an_event_type evtype, 1456 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1457 { 1458 char str[7][32]; 1459 char *env[8]; 1460 int i = 0; 1461 1462 switch (evtype) { 1463 case anev_reg_unreg: 1464 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1465 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1466 ? "deregister" : "register"); 1467 env[i] = str[i]; i++; 1468 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1469 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1470 addr_lnid->lnid); 1471 env[i] = str[i]; i++; 1472 } 1473 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1474 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1475 addr_lnid->mac); 1476 env[i] = str[i]; i++; 1477 } 1478 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1479 token->cssid, token->ssid, token->devnum); 1480 env[i] = str[i]; i++; 1481 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1482 env[i] = str[i]; i++; 1483 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1484 token->chpid); 1485 env[i] = str[i]; i++; 1486 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1487 env[i] = str[i]; i++; 1488 break; 1489 case anev_abort: 1490 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1491 env[i] = str[i]; i++; 1492 break; 1493 case anev_reset: 1494 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1495 env[i] = str[i]; i++; 1496 break; 1497 } 1498 env[i] = NULL; 1499 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1500 } 1501 1502 struct qeth_bridge_state_data { 1503 struct work_struct worker; 1504 struct qeth_card *card; 1505 struct qeth_sbp_state_change qports; 1506 }; 1507 1508 static void qeth_bridge_state_change_worker(struct work_struct *work) 1509 { 1510 struct qeth_bridge_state_data *data = 1511 container_of(work, struct qeth_bridge_state_data, worker); 1512 /* We are only interested in the first entry - local port */ 1513 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1514 char env_locrem[32]; 1515 char env_role[32]; 1516 char env_state[32]; 1517 char *env[] = { 1518 env_locrem, 1519 env_role, 1520 env_state, 1521 NULL 1522 }; 1523 1524 /* Role should not change by itself, but if it did, */ 1525 /* information from the hardware is authoritative. */ 1526 mutex_lock(&data->card->conf_mutex); 1527 data->card->options.sbp.role = entry->role; 1528 mutex_unlock(&data->card->conf_mutex); 1529 1530 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1531 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1532 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1533 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1534 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1535 "<INVALID>"); 1536 snprintf(env_state, sizeof(env_state), "STATE=%s", 1537 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1538 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1539 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1540 "<INVALID>"); 1541 kobject_uevent_env(&data->card->gdev->dev.kobj, 1542 KOBJ_CHANGE, env); 1543 kfree(data); 1544 } 1545 1546 static void qeth_bridge_state_change(struct qeth_card *card, 1547 struct qeth_ipa_cmd *cmd) 1548 { 1549 struct qeth_sbp_state_change *qports = 1550 &cmd->data.sbp.data.state_change; 1551 struct qeth_bridge_state_data *data; 1552 int extrasize; 1553 1554 QETH_CARD_TEXT(card, 2, "brstchng"); 1555 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1556 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1557 return; 1558 } 1559 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1560 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1561 GFP_ATOMIC); 1562 if (!data) { 1563 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1564 return; 1565 } 1566 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1567 data->card = card; 1568 memcpy(&data->qports, qports, 1569 sizeof(struct qeth_sbp_state_change) + extrasize); 1570 queue_work(qeth_wq, &data->worker); 1571 } 1572 1573 struct qeth_bridge_host_data { 1574 struct work_struct worker; 1575 struct qeth_card *card; 1576 struct qeth_ipacmd_addr_change hostevs; 1577 }; 1578 1579 static void qeth_bridge_host_event_worker(struct work_struct *work) 1580 { 1581 struct qeth_bridge_host_data *data = 1582 container_of(work, struct qeth_bridge_host_data, worker); 1583 int i; 1584 1585 if (data->hostevs.lost_event_mask) { 1586 dev_info(&data->card->gdev->dev, 1587 "Address notification from the Bridge Port stopped %s (%s)\n", 1588 data->card->dev->name, 1589 (data->hostevs.lost_event_mask == 0x01) 1590 ? "Overflow" 1591 : (data->hostevs.lost_event_mask == 0x02) 1592 ? "Bridge port state change" 1593 : "Unknown reason"); 1594 mutex_lock(&data->card->conf_mutex); 1595 data->card->options.sbp.hostnotification = 0; 1596 mutex_unlock(&data->card->conf_mutex); 1597 qeth_bridge_emit_host_event(data->card, anev_abort, 1598 0, NULL, NULL); 1599 } else 1600 for (i = 0; i < data->hostevs.num_entries; i++) { 1601 struct qeth_ipacmd_addr_change_entry *entry = 1602 &data->hostevs.entry[i]; 1603 qeth_bridge_emit_host_event(data->card, 1604 anev_reg_unreg, 1605 entry->change_code, 1606 &entry->token, &entry->addr_lnid); 1607 } 1608 kfree(data); 1609 } 1610 1611 static void qeth_bridge_host_event(struct qeth_card *card, 1612 struct qeth_ipa_cmd *cmd) 1613 { 1614 struct qeth_ipacmd_addr_change *hostevs = 1615 &cmd->data.addrchange; 1616 struct qeth_bridge_host_data *data; 1617 int extrasize; 1618 1619 QETH_CARD_TEXT(card, 2, "brhostev"); 1620 if (cmd->hdr.return_code != 0x0000) { 1621 if (cmd->hdr.return_code == 0x0010) { 1622 if (hostevs->lost_event_mask == 0x00) 1623 hostevs->lost_event_mask = 0xff; 1624 } else { 1625 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1626 cmd->hdr.return_code); 1627 return; 1628 } 1629 } 1630 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1631 hostevs->num_entries; 1632 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1633 GFP_ATOMIC); 1634 if (!data) { 1635 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1636 return; 1637 } 1638 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1639 data->card = card; 1640 memcpy(&data->hostevs, hostevs, 1641 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1642 queue_work(qeth_wq, &data->worker); 1643 } 1644 1645 /* SETBRIDGEPORT support; sending commands */ 1646 1647 struct _qeth_sbp_cbctl { 1648 u16 ipa_rc; 1649 u16 cmd_rc; 1650 union { 1651 u32 supported; 1652 struct { 1653 enum qeth_sbp_roles *role; 1654 enum qeth_sbp_states *state; 1655 } qports; 1656 } data; 1657 }; 1658 1659 /** 1660 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1661 * @card: qeth_card structure pointer, for debug messages. 1662 * @cbctl: state structure with hardware return codes. 1663 * @setcmd: IPA command code 1664 * 1665 * Returns negative errno-compatible error indication or 0 on success. 1666 */ 1667 static int qeth_bridgeport_makerc(struct qeth_card *card, 1668 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1669 { 1670 int rc; 1671 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1672 1673 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1674 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1675 switch (cbctl->cmd_rc) { 1676 case IPA_RC_SUCCESS: 1677 rc = 0; 1678 break; 1679 case IPA_RC_L2_UNSUPPORTED_CMD: 1680 case IPA_RC_UNSUPPORTED_COMMAND: 1681 rc = -EOPNOTSUPP; 1682 break; 1683 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1684 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1685 rc = -ENODEV; /* maybe not the best code here? */ 1686 dev_err(&card->gdev->dev, 1687 "The device is not configured as a Bridge Port\n"); 1688 break; 1689 case IPA_RC_SBP_OSA_OS_MISMATCH: 1690 case IPA_RC_SBP_IQD_OS_MISMATCH: 1691 rc = -EPERM; 1692 dev_err(&card->gdev->dev, 1693 "A Bridge Port is already configured by a different operating system\n"); 1694 break; 1695 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1696 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1697 switch (setcmd) { 1698 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1699 rc = -EEXIST; 1700 dev_err(&card->gdev->dev, 1701 "The LAN already has a primary Bridge Port\n"); 1702 break; 1703 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1704 rc = -EBUSY; 1705 dev_err(&card->gdev->dev, 1706 "The device is already a primary Bridge Port\n"); 1707 break; 1708 default: 1709 rc = -EIO; 1710 } 1711 break; 1712 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1713 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1714 rc = -EBUSY; 1715 dev_err(&card->gdev->dev, 1716 "The device is already a secondary Bridge Port\n"); 1717 break; 1718 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1719 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1720 rc = -EEXIST; 1721 dev_err(&card->gdev->dev, 1722 "The LAN cannot have more secondary Bridge Ports\n"); 1723 break; 1724 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1725 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1726 rc = -EBUSY; 1727 dev_err(&card->gdev->dev, 1728 "The device is already a primary Bridge Port\n"); 1729 break; 1730 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1731 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1732 rc = -EACCES; 1733 dev_err(&card->gdev->dev, 1734 "The device is not authorized to be a Bridge Port\n"); 1735 break; 1736 default: 1737 rc = -EIO; 1738 } 1739 else 1740 switch (cbctl->ipa_rc) { 1741 case IPA_RC_NOTSUPP: 1742 rc = -EOPNOTSUPP; 1743 break; 1744 case IPA_RC_UNSUPPORTED_COMMAND: 1745 rc = -EOPNOTSUPP; 1746 break; 1747 default: 1748 rc = -EIO; 1749 } 1750 1751 if (rc) { 1752 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1753 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1754 } 1755 return rc; 1756 } 1757 1758 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1759 enum qeth_ipa_sbp_cmd sbp_cmd, 1760 unsigned int cmd_length) 1761 { 1762 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ? 1763 IPA_CMD_SETBRIDGEPORT_IQD : 1764 IPA_CMD_SETBRIDGEPORT_OSA; 1765 struct qeth_cmd_buffer *iob; 1766 struct qeth_ipa_cmd *cmd; 1767 1768 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0); 1769 if (!iob) 1770 return iob; 1771 cmd = __ipa_cmd(iob); 1772 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1773 cmd_length; 1774 cmd->data.sbp.hdr.command_code = sbp_cmd; 1775 cmd->data.sbp.hdr.used_total = 1; 1776 cmd->data.sbp.hdr.seq_no = 1; 1777 return iob; 1778 } 1779 1780 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1781 struct qeth_reply *reply, unsigned long data) 1782 { 1783 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1784 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1785 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1786 cbctl->ipa_rc = cmd->hdr.return_code; 1787 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1788 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1789 cbctl->data.supported = 1790 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1791 } else { 1792 cbctl->data.supported = 0; 1793 } 1794 return 0; 1795 } 1796 1797 /** 1798 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1799 * @card: qeth_card structure pointer. 1800 * 1801 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1802 * strucutre: card->options.sbp.supported_funcs. 1803 */ 1804 static void qeth_bridgeport_query_support(struct qeth_card *card) 1805 { 1806 struct qeth_cmd_buffer *iob; 1807 struct _qeth_sbp_cbctl cbctl; 1808 1809 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1810 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1811 sizeof(struct qeth_sbp_query_cmds_supp)); 1812 if (!iob) 1813 return; 1814 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1815 (void *)&cbctl) || 1816 qeth_bridgeport_makerc(card, &cbctl, 1817 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1818 /* non-zero makerc signifies failure, and produce messages */ 1819 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1820 return; 1821 } 1822 card->options.sbp.supported_funcs = cbctl.data.supported; 1823 } 1824 1825 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1826 struct qeth_reply *reply, unsigned long data) 1827 { 1828 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1829 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1830 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1831 1832 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1833 cbctl->ipa_rc = cmd->hdr.return_code; 1834 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1835 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1836 return 0; 1837 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1838 cbctl->cmd_rc = 0xffff; 1839 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1840 return 0; 1841 } 1842 /* first entry contains the state of the local port */ 1843 if (qports->num_entries > 0) { 1844 if (cbctl->data.qports.role) 1845 *cbctl->data.qports.role = qports->entry[0].role; 1846 if (cbctl->data.qports.state) 1847 *cbctl->data.qports.state = qports->entry[0].state; 1848 } 1849 return 0; 1850 } 1851 1852 /** 1853 * qeth_bridgeport_query_ports() - query local bridgeport status. 1854 * @card: qeth_card structure pointer. 1855 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1856 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1857 * 1858 * Returns negative errno-compatible error indication or 0 on success. 1859 * 1860 * 'role' and 'state' are not updated in case of hardware operation failure. 1861 */ 1862 int qeth_bridgeport_query_ports(struct qeth_card *card, 1863 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1864 { 1865 int rc = 0; 1866 struct qeth_cmd_buffer *iob; 1867 struct _qeth_sbp_cbctl cbctl = { 1868 .data = { 1869 .qports = { 1870 .role = role, 1871 .state = state, 1872 }, 1873 }, 1874 }; 1875 1876 QETH_CARD_TEXT(card, 2, "brqports"); 1877 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1878 return -EOPNOTSUPP; 1879 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1880 if (!iob) 1881 return -ENOMEM; 1882 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1883 (void *)&cbctl); 1884 if (rc < 0) 1885 return rc; 1886 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1887 } 1888 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1889 1890 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1891 struct qeth_reply *reply, unsigned long data) 1892 { 1893 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1894 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1895 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1896 cbctl->ipa_rc = cmd->hdr.return_code; 1897 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1898 return 0; 1899 } 1900 1901 /** 1902 * qeth_bridgeport_setrole() - Assign primary role to the port. 1903 * @card: qeth_card structure pointer. 1904 * @role: Role to assign. 1905 * 1906 * Returns negative errno-compatible error indication or 0 on success. 1907 */ 1908 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1909 { 1910 int rc = 0; 1911 int cmdlength; 1912 struct qeth_cmd_buffer *iob; 1913 struct _qeth_sbp_cbctl cbctl; 1914 enum qeth_ipa_sbp_cmd setcmd; 1915 1916 QETH_CARD_TEXT(card, 2, "brsetrol"); 1917 switch (role) { 1918 case QETH_SBP_ROLE_NONE: 1919 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1920 cmdlength = sizeof(struct qeth_sbp_reset_role); 1921 break; 1922 case QETH_SBP_ROLE_PRIMARY: 1923 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1924 cmdlength = sizeof(struct qeth_sbp_set_primary); 1925 break; 1926 case QETH_SBP_ROLE_SECONDARY: 1927 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1928 cmdlength = sizeof(struct qeth_sbp_set_secondary); 1929 break; 1930 default: 1931 return -EINVAL; 1932 } 1933 if (!(card->options.sbp.supported_funcs & setcmd)) 1934 return -EOPNOTSUPP; 1935 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1936 if (!iob) 1937 return -ENOMEM; 1938 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 1939 (void *)&cbctl); 1940 if (rc < 0) 1941 return rc; 1942 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 1943 } 1944 1945 /** 1946 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1947 * @card: qeth_card structure pointer, for debug messages. 1948 * 1949 * Returns negative errno-compatible error indication or 0 on success. 1950 */ 1951 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1952 { 1953 int rc; 1954 1955 if (pnso_rc == 0) 1956 switch (response) { 1957 case 0x0001: 1958 rc = 0; 1959 break; 1960 case 0x0004: 1961 case 0x0100: 1962 case 0x0106: 1963 rc = -EOPNOTSUPP; 1964 dev_err(&card->gdev->dev, 1965 "Setting address notification failed\n"); 1966 break; 1967 case 0x0107: 1968 rc = -EAGAIN; 1969 break; 1970 default: 1971 rc = -EIO; 1972 } 1973 else 1974 rc = -EIO; 1975 1976 if (rc) { 1977 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1978 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1979 } 1980 return rc; 1981 } 1982 1983 static void qeth_bridgeport_an_set_cb(void *priv, 1984 enum qdio_brinfo_entry_type type, void *entry) 1985 { 1986 struct qeth_card *card = (struct qeth_card *)priv; 1987 struct qdio_brinfo_entry_l2 *l2entry; 1988 u8 code; 1989 1990 if (type != l2_addr_lnid) { 1991 WARN_ON_ONCE(1); 1992 return; 1993 } 1994 1995 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1996 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1997 if (l2entry->addr_lnid.lnid) 1998 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1999 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 2000 (struct net_if_token *)&l2entry->nit, 2001 (struct mac_addr_lnid *)&l2entry->addr_lnid); 2002 } 2003 2004 /** 2005 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 2006 * @card: qeth_card structure pointer. 2007 * @enable: 0 - disable, non-zero - enable notifications 2008 * 2009 * Returns negative errno-compatible error indication or 0 on success. 2010 * 2011 * On enable, emits a series of address notifications udev events for all 2012 * currently registered hosts. 2013 */ 2014 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2015 { 2016 int rc; 2017 u16 response; 2018 struct ccw_device *ddev; 2019 struct subchannel_id schid; 2020 2021 if (!card) 2022 return -EINVAL; 2023 if (!card->options.sbp.supported_funcs) 2024 return -EOPNOTSUPP; 2025 ddev = CARD_DDEV(card); 2026 ccw_device_get_schid(ddev, &schid); 2027 2028 if (enable) { 2029 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2030 rc = qdio_pnso_brinfo(schid, 1, &response, 2031 qeth_bridgeport_an_set_cb, card); 2032 } else 2033 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2034 return qeth_anset_makerc(card, rc, response); 2035 } 2036 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2037 2038 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 2039 { 2040 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 2041 card->options.sbp.hostnotification); 2042 } 2043 2044 /* VNIC Characteristics support */ 2045 2046 /* handle VNICC IPA command return codes; convert to error codes */ 2047 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc) 2048 { 2049 int rc; 2050 2051 switch (ipa_rc) { 2052 case IPA_RC_SUCCESS: 2053 return ipa_rc; 2054 case IPA_RC_L2_UNSUPPORTED_CMD: 2055 case IPA_RC_NOTSUPP: 2056 rc = -EOPNOTSUPP; 2057 break; 2058 case IPA_RC_VNICC_OOSEQ: 2059 rc = -EALREADY; 2060 break; 2061 case IPA_RC_VNICC_VNICBP: 2062 rc = -EBUSY; 2063 break; 2064 case IPA_RC_L2_ADDR_TABLE_FULL: 2065 rc = -ENOSPC; 2066 break; 2067 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 2068 rc = -EACCES; 2069 break; 2070 default: 2071 rc = -EIO; 2072 } 2073 2074 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 2075 return rc; 2076 } 2077 2078 /* generic VNICC request call back control */ 2079 struct _qeth_l2_vnicc_request_cbctl { 2080 u32 sub_cmd; 2081 struct { 2082 u32 vnic_char; 2083 u32 timeout; 2084 } param; 2085 struct { 2086 union{ 2087 u32 *sup_cmds; 2088 u32 *timeout; 2089 }; 2090 } result; 2091 }; 2092 2093 /* generic VNICC request call back */ 2094 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 2095 struct qeth_reply *reply, 2096 unsigned long data) 2097 { 2098 struct _qeth_l2_vnicc_request_cbctl *cbctl = 2099 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 2100 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2101 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 2102 2103 QETH_CARD_TEXT(card, 2, "vniccrcb"); 2104 if (cmd->hdr.return_code) 2105 return 0; 2106 /* return results to caller */ 2107 card->options.vnicc.sup_chars = rep->hdr.sup; 2108 card->options.vnicc.cur_chars = rep->hdr.cur; 2109 2110 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS) 2111 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds; 2112 2113 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT) 2114 *cbctl->result.timeout = rep->getset_timeout.timeout; 2115 2116 return 0; 2117 } 2118 2119 /* generic VNICC request */ 2120 static int qeth_l2_vnicc_request(struct qeth_card *card, 2121 struct _qeth_l2_vnicc_request_cbctl *cbctl) 2122 { 2123 struct qeth_ipacmd_vnicc *req; 2124 struct qeth_cmd_buffer *iob; 2125 struct qeth_ipa_cmd *cmd; 2126 int rc; 2127 2128 QETH_CARD_TEXT(card, 2, "vniccreq"); 2129 2130 /* get new buffer for request */ 2131 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0); 2132 if (!iob) 2133 return -ENOMEM; 2134 2135 /* create header for request */ 2136 cmd = __ipa_cmd(iob); 2137 req = &cmd->data.vnicc; 2138 2139 /* create sub command header for request */ 2140 req->sub_hdr.data_length = sizeof(req->sub_hdr); 2141 req->sub_hdr.sub_command = cbctl->sub_cmd; 2142 2143 /* create sub command specific request fields */ 2144 switch (cbctl->sub_cmd) { 2145 case IPA_VNICC_QUERY_CHARS: 2146 break; 2147 case IPA_VNICC_QUERY_CMDS: 2148 req->sub_hdr.data_length += sizeof(req->query_cmds); 2149 req->query_cmds.vnic_char = cbctl->param.vnic_char; 2150 break; 2151 case IPA_VNICC_ENABLE: 2152 case IPA_VNICC_DISABLE: 2153 req->sub_hdr.data_length += sizeof(req->set_char); 2154 req->set_char.vnic_char = cbctl->param.vnic_char; 2155 break; 2156 case IPA_VNICC_SET_TIMEOUT: 2157 req->getset_timeout.timeout = cbctl->param.timeout; 2158 /* fallthrough */ 2159 case IPA_VNICC_GET_TIMEOUT: 2160 req->sub_hdr.data_length += sizeof(req->getset_timeout); 2161 req->getset_timeout.vnic_char = cbctl->param.vnic_char; 2162 break; 2163 default: 2164 qeth_release_buffer(iob->channel, iob); 2165 return -EOPNOTSUPP; 2166 } 2167 2168 /* send request */ 2169 rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, 2170 (void *) cbctl); 2171 2172 return qeth_l2_vnicc_makerc(card, rc); 2173 } 2174 2175 /* VNICC query VNIC characteristics request */ 2176 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 2177 { 2178 struct _qeth_l2_vnicc_request_cbctl cbctl; 2179 2180 /* prepare callback control */ 2181 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS; 2182 2183 QETH_CARD_TEXT(card, 2, "vniccqch"); 2184 return qeth_l2_vnicc_request(card, &cbctl); 2185 } 2186 2187 /* VNICC query sub commands request */ 2188 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 2189 u32 *sup_cmds) 2190 { 2191 struct _qeth_l2_vnicc_request_cbctl cbctl; 2192 2193 /* prepare callback control */ 2194 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS; 2195 cbctl.param.vnic_char = vnic_char; 2196 cbctl.result.sup_cmds = sup_cmds; 2197 2198 QETH_CARD_TEXT(card, 2, "vniccqcm"); 2199 return qeth_l2_vnicc_request(card, &cbctl); 2200 } 2201 2202 /* VNICC enable/disable characteristic request */ 2203 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 2204 u32 cmd) 2205 { 2206 struct _qeth_l2_vnicc_request_cbctl cbctl; 2207 2208 /* prepare callback control */ 2209 cbctl.sub_cmd = cmd; 2210 cbctl.param.vnic_char = vnic_char; 2211 2212 QETH_CARD_TEXT(card, 2, "vniccedc"); 2213 return qeth_l2_vnicc_request(card, &cbctl); 2214 } 2215 2216 /* VNICC get/set timeout for characteristic request */ 2217 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 2218 u32 cmd, u32 *timeout) 2219 { 2220 struct _qeth_l2_vnicc_request_cbctl cbctl; 2221 2222 /* prepare callback control */ 2223 cbctl.sub_cmd = cmd; 2224 cbctl.param.vnic_char = vnicc; 2225 if (cmd == IPA_VNICC_SET_TIMEOUT) 2226 cbctl.param.timeout = *timeout; 2227 if (cmd == IPA_VNICC_GET_TIMEOUT) 2228 cbctl.result.timeout = timeout; 2229 2230 QETH_CARD_TEXT(card, 2, "vniccgst"); 2231 return qeth_l2_vnicc_request(card, &cbctl); 2232 } 2233 2234 /* set current VNICC flag state; called from sysfs store function */ 2235 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 2236 { 2237 int rc = 0; 2238 u32 cmd; 2239 2240 QETH_CARD_TEXT(card, 2, "vniccsch"); 2241 2242 /* do not change anything if BridgePort is enabled */ 2243 if (qeth_bridgeport_is_in_use(card)) 2244 return -EBUSY; 2245 2246 /* check if characteristic and enable/disable are supported */ 2247 if (!(card->options.vnicc.sup_chars & vnicc) || 2248 !(card->options.vnicc.set_char_sup & vnicc)) 2249 return -EOPNOTSUPP; 2250 2251 /* set enable/disable command and store wanted characteristic */ 2252 if (state) { 2253 cmd = IPA_VNICC_ENABLE; 2254 card->options.vnicc.wanted_chars |= vnicc; 2255 } else { 2256 cmd = IPA_VNICC_DISABLE; 2257 card->options.vnicc.wanted_chars &= ~vnicc; 2258 } 2259 2260 /* do we need to do anything? */ 2261 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 2262 return rc; 2263 2264 /* if card is not ready, simply stop here */ 2265 if (!qeth_card_hw_is_reachable(card)) { 2266 if (state) 2267 card->options.vnicc.cur_chars |= vnicc; 2268 else 2269 card->options.vnicc.cur_chars &= ~vnicc; 2270 return rc; 2271 } 2272 2273 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 2274 if (rc) 2275 card->options.vnicc.wanted_chars = 2276 card->options.vnicc.cur_chars; 2277 else { 2278 /* successful online VNICC change; handle special cases */ 2279 if (state && vnicc == QETH_VNICC_RX_BCAST) 2280 card->options.vnicc.rx_bcast_enabled = true; 2281 if (!state && vnicc == QETH_VNICC_LEARNING) 2282 qeth_l2_vnicc_recover_timeout(card, vnicc, 2283 &card->options.vnicc.learning_timeout); 2284 } 2285 2286 return rc; 2287 } 2288 2289 /* get current VNICC flag state; called from sysfs show function */ 2290 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 2291 { 2292 int rc = 0; 2293 2294 QETH_CARD_TEXT(card, 2, "vniccgch"); 2295 2296 /* do not get anything if BridgePort is enabled */ 2297 if (qeth_bridgeport_is_in_use(card)) 2298 return -EBUSY; 2299 2300 /* check if characteristic is supported */ 2301 if (!(card->options.vnicc.sup_chars & vnicc)) 2302 return -EOPNOTSUPP; 2303 2304 /* if card is ready, query current VNICC state */ 2305 if (qeth_card_hw_is_reachable(card)) 2306 rc = qeth_l2_vnicc_query_chars(card); 2307 2308 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 2309 return rc; 2310 } 2311 2312 /* set VNICC timeout; called from sysfs store function. Currently, only learning 2313 * supports timeout 2314 */ 2315 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 2316 { 2317 int rc = 0; 2318 2319 QETH_CARD_TEXT(card, 2, "vniccsto"); 2320 2321 /* do not change anything if BridgePort is enabled */ 2322 if (qeth_bridgeport_is_in_use(card)) 2323 return -EBUSY; 2324 2325 /* check if characteristic and set_timeout are supported */ 2326 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2327 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2328 return -EOPNOTSUPP; 2329 2330 /* do we need to do anything? */ 2331 if (card->options.vnicc.learning_timeout == timeout) 2332 return rc; 2333 2334 /* if card is not ready, simply store the value internally and return */ 2335 if (!qeth_card_hw_is_reachable(card)) { 2336 card->options.vnicc.learning_timeout = timeout; 2337 return rc; 2338 } 2339 2340 /* send timeout value to card; if successful, store value internally */ 2341 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2342 IPA_VNICC_SET_TIMEOUT, &timeout); 2343 if (!rc) 2344 card->options.vnicc.learning_timeout = timeout; 2345 2346 return rc; 2347 } 2348 2349 /* get current VNICC timeout; called from sysfs show function. Currently, only 2350 * learning supports timeout 2351 */ 2352 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 2353 { 2354 int rc = 0; 2355 2356 QETH_CARD_TEXT(card, 2, "vniccgto"); 2357 2358 /* do not get anything if BridgePort is enabled */ 2359 if (qeth_bridgeport_is_in_use(card)) 2360 return -EBUSY; 2361 2362 /* check if characteristic and get_timeout are supported */ 2363 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2364 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2365 return -EOPNOTSUPP; 2366 /* if card is ready, get timeout. Otherwise, just return stored value */ 2367 *timeout = card->options.vnicc.learning_timeout; 2368 if (qeth_card_hw_is_reachable(card)) 2369 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2370 IPA_VNICC_GET_TIMEOUT, 2371 timeout); 2372 2373 return rc; 2374 } 2375 2376 /* check if VNICC is currently enabled */ 2377 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 2378 { 2379 /* if everything is turned off, VNICC is not active */ 2380 if (!card->options.vnicc.cur_chars) 2381 return false; 2382 /* default values are only OK if rx_bcast was not enabled by user 2383 * or the card is offline. 2384 */ 2385 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 2386 if (!card->options.vnicc.rx_bcast_enabled || 2387 !qeth_card_hw_is_reachable(card)) 2388 return false; 2389 } 2390 return true; 2391 } 2392 2393 /* recover user timeout setting */ 2394 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 2395 u32 *timeout) 2396 { 2397 if (card->options.vnicc.sup_chars & vnicc && 2398 card->options.vnicc.getset_timeout_sup & vnicc && 2399 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 2400 timeout)) 2401 return false; 2402 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2403 return true; 2404 } 2405 2406 /* recover user characteristic setting */ 2407 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2408 bool enable) 2409 { 2410 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2411 2412 if (card->options.vnicc.sup_chars & vnicc && 2413 card->options.vnicc.set_char_sup & vnicc && 2414 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2415 return false; 2416 card->options.vnicc.wanted_chars &= ~vnicc; 2417 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2418 return true; 2419 } 2420 2421 /* (re-)initialize VNICC */ 2422 static void qeth_l2_vnicc_init(struct qeth_card *card) 2423 { 2424 u32 *timeout = &card->options.vnicc.learning_timeout; 2425 unsigned int chars_len, i; 2426 unsigned long chars_tmp; 2427 u32 sup_cmds, vnicc; 2428 bool enable, error; 2429 2430 QETH_CARD_TEXT(card, 2, "vniccini"); 2431 /* reset rx_bcast */ 2432 card->options.vnicc.rx_bcast_enabled = 0; 2433 /* initial query and storage of VNIC characteristics */ 2434 if (qeth_l2_vnicc_query_chars(card)) { 2435 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2436 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2437 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2438 /* fail quietly if user didn't change the default config */ 2439 card->options.vnicc.sup_chars = 0; 2440 card->options.vnicc.cur_chars = 0; 2441 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2442 return; 2443 } 2444 /* get supported commands for each supported characteristic */ 2445 chars_tmp = card->options.vnicc.sup_chars; 2446 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2447 for_each_set_bit(i, &chars_tmp, chars_len) { 2448 vnicc = BIT(i); 2449 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds); 2450 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) || 2451 !(sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2452 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2453 if (!(sup_cmds & IPA_VNICC_ENABLE) || 2454 !(sup_cmds & IPA_VNICC_DISABLE)) 2455 card->options.vnicc.set_char_sup &= ~vnicc; 2456 } 2457 /* enforce assumed default values and recover settings, if changed */ 2458 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2459 timeout); 2460 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; 2461 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; 2462 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2463 for_each_set_bit(i, &chars_tmp, chars_len) { 2464 vnicc = BIT(i); 2465 enable = card->options.vnicc.wanted_chars & vnicc; 2466 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2467 } 2468 if (error) 2469 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2470 } 2471 2472 /* configure default values of VNIC characteristics */ 2473 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2474 { 2475 /* characteristics values */ 2476 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2477 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2478 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2479 /* supported commands */ 2480 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2481 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2482 /* settings wanted by users */ 2483 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2484 } 2485 2486 module_init(qeth_l2_init); 2487 module_exit(qeth_l2_exit); 2488 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2489 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2490 MODULE_LICENSE("GPL"); 2491