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 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 125 ether_addr_copy(card->dev->dev_addr, mac); 126 dev_info(&card->gdev->dev, 127 "MAC address %pM successfully registered on device %s\n", 128 card->dev->dev_addr, card->dev->name); 129 } else { 130 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 131 switch (rc) { 132 case -EEXIST: 133 dev_warn(&card->gdev->dev, 134 "MAC address %pM already exists\n", mac); 135 break; 136 case -EPERM: 137 dev_warn(&card->gdev->dev, 138 "MAC address %pM is not authorized\n", mac); 139 break; 140 } 141 } 142 return rc; 143 } 144 145 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 146 { 147 int rc; 148 149 QETH_CARD_TEXT(card, 2, "L2Delmac"); 150 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 151 return 0; 152 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC); 153 if (rc == 0) 154 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 155 return rc; 156 } 157 158 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) 159 { 160 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ? 161 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC; 162 int rc; 163 164 QETH_CARD_TEXT(card, 2, "L2Wmac"); 165 rc = qeth_l2_send_setdelmac(card, mac, cmd); 166 if (rc == -EEXIST) 167 QETH_DBF_MESSAGE(2, "MAC %pM already registered on %s\n", 168 mac, QETH_CARD_IFNAME(card)); 169 else if (rc) 170 QETH_DBF_MESSAGE(2, "Failed to register MAC %pM on %s: %d\n", 171 mac, QETH_CARD_IFNAME(card), rc); 172 return rc; 173 } 174 175 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) 176 { 177 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ? 178 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; 179 int rc; 180 181 QETH_CARD_TEXT(card, 2, "L2Rmac"); 182 rc = qeth_l2_send_setdelmac(card, mac, cmd); 183 if (rc) 184 QETH_DBF_MESSAGE(2, "Failed to delete MAC %pM on %s: %d\n", 185 mac, QETH_CARD_IFNAME(card), rc); 186 return rc; 187 } 188 189 static void qeth_l2_del_all_macs(struct qeth_card *card) 190 { 191 struct qeth_mac *mac; 192 struct hlist_node *tmp; 193 int i; 194 195 spin_lock_bh(&card->mclock); 196 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 197 hash_del(&mac->hnode); 198 kfree(mac); 199 } 200 spin_unlock_bh(&card->mclock); 201 } 202 203 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 204 { 205 if (card->info.type == QETH_CARD_TYPE_OSN) 206 return RTN_UNSPEC; 207 if (is_broadcast_ether_addr(skb->data)) 208 return RTN_BROADCAST; 209 if (is_multicast_ether_addr(skb->data)) 210 return RTN_MULTICAST; 211 return RTN_UNSPEC; 212 } 213 214 static void qeth_l2_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr, 215 struct sk_buff *skb) 216 { 217 struct iphdr *iph = ip_hdr(skb); 218 219 /* tcph->check contains already the pseudo hdr checksum 220 * so just set the header flags 221 */ 222 if (iph->protocol == IPPROTO_UDP) 223 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; 224 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 225 QETH_HDR_EXT_CSUM_HDR_REQ; 226 iph->check = 0; 227 if (card->options.performance_stats) 228 card->perf_stats.tx_csum++; 229 } 230 231 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb, 232 int cast_type, unsigned int data_len) 233 { 234 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 235 236 memset(hdr, 0, sizeof(struct qeth_hdr)); 237 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 238 hdr->hdr.l2.pkt_length = data_len; 239 240 /* set byte byte 3 to casting flags */ 241 if (cast_type == RTN_MULTICAST) 242 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 243 else if (cast_type == RTN_BROADCAST) 244 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 245 else 246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 247 248 /* VSWITCH relies on the VLAN 249 * information to be present in 250 * the QDIO header */ 251 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 252 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 253 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 254 } 255 } 256 257 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode) 258 { 259 if (retcode) 260 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 261 262 switch (retcode) { 263 case IPA_RC_SUCCESS: 264 return 0; 265 case IPA_RC_L2_INVALID_VLAN_ID: 266 return -EINVAL; 267 case IPA_RC_L2_DUP_VLAN_ID: 268 return -EEXIST; 269 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 270 return -ENOENT; 271 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 272 return -EPERM; 273 case -ENOMEM: 274 return -ENOMEM; 275 default: 276 return -EIO; 277 } 278 } 279 280 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 281 struct qeth_reply *reply, 282 unsigned long data) 283 { 284 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 285 286 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 287 if (cmd->hdr.return_code) { 288 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n", 289 cmd->data.setdelvlan.vlan_id, 290 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 291 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 292 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 293 } 294 return 0; 295 } 296 297 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 298 enum qeth_ipa_cmds ipacmd) 299 { 300 struct qeth_ipa_cmd *cmd; 301 struct qeth_cmd_buffer *iob; 302 303 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 304 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 305 if (!iob) 306 return -ENOMEM; 307 cmd = __ipa_cmd(iob); 308 cmd->data.setdelvlan.vlan_id = i; 309 return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob, 310 qeth_l2_send_setdelvlan_cb, NULL)); 311 } 312 313 static void qeth_l2_process_vlans(struct qeth_card *card) 314 { 315 struct qeth_vlan_vid *id; 316 QETH_CARD_TEXT(card, 3, "L2prcvln"); 317 spin_lock_bh(&card->vlanlock); 318 list_for_each_entry(id, &card->vid_list, list) { 319 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 320 } 321 spin_unlock_bh(&card->vlanlock); 322 } 323 324 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 325 __be16 proto, u16 vid) 326 { 327 struct qeth_card *card = dev->ml_priv; 328 struct qeth_vlan_vid *id; 329 int rc; 330 331 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 332 if (!vid) 333 return 0; 334 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 335 QETH_CARD_TEXT(card, 3, "aidREC"); 336 return 0; 337 } 338 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 339 if (id) { 340 id->vid = vid; 341 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 342 if (rc) { 343 kfree(id); 344 return rc; 345 } 346 spin_lock_bh(&card->vlanlock); 347 list_add_tail(&id->list, &card->vid_list); 348 spin_unlock_bh(&card->vlanlock); 349 } else { 350 return -ENOMEM; 351 } 352 return 0; 353 } 354 355 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 356 __be16 proto, u16 vid) 357 { 358 struct qeth_vlan_vid *id, *tmpid = NULL; 359 struct qeth_card *card = dev->ml_priv; 360 int rc = 0; 361 362 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 363 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 364 QETH_CARD_TEXT(card, 3, "kidREC"); 365 return 0; 366 } 367 spin_lock_bh(&card->vlanlock); 368 list_for_each_entry(id, &card->vid_list, list) { 369 if (id->vid == vid) { 370 list_del(&id->list); 371 tmpid = id; 372 break; 373 } 374 } 375 spin_unlock_bh(&card->vlanlock); 376 if (tmpid) { 377 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 378 kfree(tmpid); 379 } 380 qeth_l2_set_rx_mode(card->dev); 381 return rc; 382 } 383 384 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 385 { 386 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 387 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 388 389 qeth_set_allowed_threads(card, 0, 1); 390 if (card->read.state == CH_STATE_UP && 391 card->write.state == CH_STATE_UP && 392 (card->state == CARD_STATE_UP)) { 393 if (recovery_mode && 394 card->info.type != QETH_CARD_TYPE_OSN) { 395 qeth_l2_stop(card->dev); 396 } else { 397 rtnl_lock(); 398 dev_close(card->dev); 399 rtnl_unlock(); 400 } 401 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 402 card->state = CARD_STATE_SOFTSETUP; 403 } 404 if (card->state == CARD_STATE_SOFTSETUP) { 405 qeth_l2_del_all_macs(card); 406 qeth_clear_ipacmd_list(card); 407 card->state = CARD_STATE_HARDSETUP; 408 } 409 if (card->state == CARD_STATE_HARDSETUP) { 410 qeth_qdio_clear_card(card, 0); 411 qeth_clear_qdio_buffers(card); 412 qeth_clear_working_pool_list(card); 413 card->state = CARD_STATE_DOWN; 414 } 415 if (card->state == CARD_STATE_DOWN) { 416 qeth_clear_cmd_buffers(&card->read); 417 qeth_clear_cmd_buffers(&card->write); 418 } 419 } 420 421 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 422 int budget, int *done) 423 { 424 int work_done = 0; 425 struct sk_buff *skb; 426 struct qeth_hdr *hdr; 427 unsigned int len; 428 429 *done = 0; 430 WARN_ON_ONCE(!budget); 431 while (budget) { 432 skb = qeth_core_get_next_skb(card, 433 &card->qdio.in_q->bufs[card->rx.b_index], 434 &card->rx.b_element, &card->rx.e_offset, &hdr); 435 if (!skb) { 436 *done = 1; 437 break; 438 } 439 switch (hdr->hdr.l2.id) { 440 case QETH_HEADER_TYPE_LAYER2: 441 skb->protocol = eth_type_trans(skb, skb->dev); 442 if ((card->dev->features & NETIF_F_RXCSUM) 443 && ((hdr->hdr.l2.flags[1] & 444 (QETH_HDR_EXT_CSUM_HDR_REQ | 445 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 446 (QETH_HDR_EXT_CSUM_HDR_REQ | 447 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 448 skb->ip_summed = CHECKSUM_UNNECESSARY; 449 else 450 skb->ip_summed = CHECKSUM_NONE; 451 if (skb->protocol == htons(ETH_P_802_2)) 452 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 453 len = skb->len; 454 napi_gro_receive(&card->napi, skb); 455 break; 456 case QETH_HEADER_TYPE_OSN: 457 if (card->info.type == QETH_CARD_TYPE_OSN) { 458 skb_push(skb, sizeof(struct qeth_hdr)); 459 skb_copy_to_linear_data(skb, hdr, 460 sizeof(struct qeth_hdr)); 461 len = skb->len; 462 card->osn_info.data_cb(skb); 463 break; 464 } 465 /* else unknown */ 466 default: 467 dev_kfree_skb_any(skb); 468 QETH_CARD_TEXT(card, 3, "inbunkno"); 469 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 470 continue; 471 } 472 work_done++; 473 budget--; 474 card->stats.rx_packets++; 475 card->stats.rx_bytes += len; 476 } 477 return work_done; 478 } 479 480 static int qeth_l2_request_initial_mac(struct qeth_card *card) 481 { 482 int rc = 0; 483 char vendor_pre[] = {0x02, 0x00, 0x00}; 484 485 QETH_DBF_TEXT(SETUP, 2, "l2reqmac"); 486 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 487 488 if (MACHINE_IS_VM) { 489 rc = qeth_vm_request_mac(card); 490 if (!rc) 491 goto out; 492 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n", 493 CARD_BUS_ID(card), rc); 494 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc); 495 /* fall back to alternative mechanism: */ 496 } 497 498 if (card->info.type == QETH_CARD_TYPE_IQD || 499 card->info.type == QETH_CARD_TYPE_OSM || 500 card->info.type == QETH_CARD_TYPE_OSX || 501 card->info.guestlan) { 502 rc = qeth_setadpparms_change_macaddr(card); 503 if (rc) { 504 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 505 "device %s: x%x\n", CARD_BUS_ID(card), rc); 506 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 507 return rc; 508 } 509 } else { 510 eth_random_addr(card->dev->dev_addr); 511 memcpy(card->dev->dev_addr, vendor_pre, 3); 512 } 513 out: 514 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len); 515 return 0; 516 } 517 518 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 519 { 520 struct sockaddr *addr = p; 521 struct qeth_card *card = dev->ml_priv; 522 int rc = 0; 523 524 QETH_CARD_TEXT(card, 3, "setmac"); 525 526 if (card->info.type == QETH_CARD_TYPE_OSN || 527 card->info.type == QETH_CARD_TYPE_OSM || 528 card->info.type == QETH_CARD_TYPE_OSX) { 529 QETH_CARD_TEXT(card, 3, "setmcTYP"); 530 return -EOPNOTSUPP; 531 } 532 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 533 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 534 QETH_CARD_TEXT(card, 3, "setmcREC"); 535 return -ERESTARTSYS; 536 } 537 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 538 if (!rc || (rc == -ENOENT)) 539 rc = qeth_l2_send_setmac(card, addr->sa_data); 540 return rc ? -EINVAL : 0; 541 } 542 543 static void qeth_promisc_to_bridge(struct qeth_card *card) 544 { 545 struct net_device *dev = card->dev; 546 enum qeth_ipa_promisc_modes promisc_mode; 547 int role; 548 int rc; 549 550 QETH_CARD_TEXT(card, 3, "pmisc2br"); 551 552 if (!card->options.sbp.reflect_promisc) 553 return; 554 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 555 : SET_PROMISC_MODE_OFF; 556 if (promisc_mode == card->info.promisc_mode) 557 return; 558 559 if (promisc_mode == SET_PROMISC_MODE_ON) { 560 if (card->options.sbp.reflect_promisc_primary) 561 role = QETH_SBP_ROLE_PRIMARY; 562 else 563 role = QETH_SBP_ROLE_SECONDARY; 564 } else 565 role = QETH_SBP_ROLE_NONE; 566 567 rc = qeth_bridgeport_setrole(card, role); 568 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 569 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 570 if (!rc) { 571 card->options.sbp.role = role; 572 card->info.promisc_mode = promisc_mode; 573 } 574 575 } 576 /* New MAC address is added to the hash table and marked to be written on card 577 * only if there is not in the hash table storage already 578 * 579 */ 580 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 581 { 582 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 583 struct qeth_mac *mac; 584 585 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 586 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 587 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 588 return; 589 } 590 } 591 592 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 593 if (!mac) 594 return; 595 596 ether_addr_copy(mac->mac_addr, ha->addr); 597 mac->disp_flag = QETH_DISP_ADDR_ADD; 598 599 hash_add(card->mac_htable, &mac->hnode, mac_hash); 600 } 601 602 static void qeth_l2_set_rx_mode(struct net_device *dev) 603 { 604 struct qeth_card *card = dev->ml_priv; 605 struct netdev_hw_addr *ha; 606 struct qeth_mac *mac; 607 struct hlist_node *tmp; 608 int i; 609 int rc; 610 611 if (card->info.type == QETH_CARD_TYPE_OSN) 612 return; 613 614 QETH_CARD_TEXT(card, 3, "setmulti"); 615 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 616 (card->state != CARD_STATE_UP)) 617 return; 618 619 spin_lock_bh(&card->mclock); 620 621 netdev_for_each_mc_addr(ha, dev) 622 qeth_l2_add_mac(card, ha); 623 netdev_for_each_uc_addr(ha, dev) 624 qeth_l2_add_mac(card, ha); 625 626 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 627 switch (mac->disp_flag) { 628 case QETH_DISP_ADDR_DELETE: 629 qeth_l2_remove_mac(card, mac->mac_addr); 630 hash_del(&mac->hnode); 631 kfree(mac); 632 break; 633 case QETH_DISP_ADDR_ADD: 634 rc = qeth_l2_write_mac(card, mac->mac_addr); 635 if (rc) { 636 hash_del(&mac->hnode); 637 kfree(mac); 638 break; 639 } 640 /* fall through */ 641 default: 642 /* for next call to set_rx_mode(): */ 643 mac->disp_flag = QETH_DISP_ADDR_DELETE; 644 } 645 } 646 647 spin_unlock_bh(&card->mclock); 648 649 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 650 qeth_setadp_promisc_mode(card); 651 else 652 qeth_promisc_to_bridge(card); 653 } 654 655 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb, 656 struct qeth_qdio_out_q *queue, int cast_type) 657 { 658 unsigned int data_offset = ETH_HLEN; 659 struct qeth_hdr *hdr; 660 int rc; 661 662 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 663 if (!hdr) 664 return -ENOMEM; 665 qeth_l2_fill_header(hdr, skb, cast_type, skb->len); 666 skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr), 667 data_offset); 668 669 if (!qeth_get_elements_no(card, skb, 1, data_offset)) { 670 rc = -E2BIG; 671 goto out; 672 } 673 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, 674 sizeof(*hdr) + data_offset); 675 out: 676 if (rc) 677 kmem_cache_free(qeth_core_header_cache, hdr); 678 return rc; 679 } 680 681 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb, 682 struct qeth_qdio_out_q *queue, int cast_type) 683 { 684 int push_len = sizeof(struct qeth_hdr); 685 unsigned int elements, nr_frags; 686 unsigned int hdr_elements = 0; 687 struct qeth_hdr *hdr = NULL; 688 unsigned int hd_len = 0; 689 int rc; 690 691 /* fix hardware limitation: as long as we do not have sbal 692 * chaining we can not send long frag lists 693 */ 694 if (!qeth_get_elements_no(card, skb, 0, 0)) { 695 rc = skb_linearize(skb); 696 697 if (card->options.performance_stats) { 698 if (rc) 699 card->perf_stats.tx_linfail++; 700 else 701 card->perf_stats.tx_lin++; 702 } 703 if (rc) 704 return rc; 705 } 706 nr_frags = skb_shinfo(skb)->nr_frags; 707 708 rc = skb_cow_head(skb, push_len); 709 if (rc) 710 return rc; 711 push_len = qeth_push_hdr(skb, &hdr, push_len); 712 if (push_len < 0) 713 return push_len; 714 if (!push_len) { 715 /* hdr was allocated from cache */ 716 hd_len = sizeof(*hdr); 717 hdr_elements = 1; 718 } 719 qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len); 720 if (skb->ip_summed == CHECKSUM_PARTIAL) 721 qeth_l2_hdr_csum(card, hdr, skb); 722 723 elements = qeth_get_elements_no(card, skb, hdr_elements, 0); 724 if (!elements) { 725 rc = -E2BIG; 726 goto out; 727 } 728 elements += hdr_elements; 729 730 /* TODO: remove the skb_orphan() once TX completion is fast enough */ 731 skb_orphan(skb); 732 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements); 733 out: 734 if (!rc) { 735 if (card->options.performance_stats && nr_frags) { 736 card->perf_stats.sg_skbs_sent++; 737 /* nr_frags + skb->data */ 738 card->perf_stats.sg_frags_sent += nr_frags + 1; 739 } 740 } else { 741 if (hd_len) 742 kmem_cache_free(qeth_core_header_cache, hdr); 743 if (rc == -EBUSY) 744 /* roll back to ETH header */ 745 skb_pull(skb, push_len); 746 } 747 return rc; 748 } 749 750 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 751 struct qeth_qdio_out_q *queue) 752 { 753 unsigned int elements; 754 struct qeth_hdr *hdr; 755 756 if (skb->protocol == htons(ETH_P_IPV6)) 757 return -EPROTONOSUPPORT; 758 759 hdr = (struct qeth_hdr *)skb->data; 760 elements = qeth_get_elements_no(card, skb, 0, 0); 761 if (!elements) 762 return -E2BIG; 763 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr))) 764 return -EINVAL; 765 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements); 766 } 767 768 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 769 struct net_device *dev) 770 { 771 struct qeth_card *card = dev->ml_priv; 772 int cast_type = qeth_l2_get_cast_type(card, skb); 773 struct qeth_qdio_out_q *queue; 774 int tx_bytes = skb->len; 775 int rc; 776 777 if (card->qdio.do_prio_queueing || (cast_type && 778 card->info.is_multicast_different)) 779 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 780 qeth_get_ip_version(skb), cast_type)]; 781 else 782 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 783 784 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 785 card->stats.tx_carrier_errors++; 786 goto tx_drop; 787 } 788 789 if (card->options.performance_stats) { 790 card->perf_stats.outbound_cnt++; 791 card->perf_stats.outbound_start_time = qeth_get_micros(); 792 } 793 netif_stop_queue(dev); 794 795 switch (card->info.type) { 796 case QETH_CARD_TYPE_OSN: 797 rc = qeth_l2_xmit_osn(card, skb, queue); 798 break; 799 case QETH_CARD_TYPE_IQD: 800 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type); 801 break; 802 default: 803 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type); 804 } 805 806 if (!rc) { 807 card->stats.tx_packets++; 808 card->stats.tx_bytes += tx_bytes; 809 if (card->options.performance_stats) 810 card->perf_stats.outbound_time += qeth_get_micros() - 811 card->perf_stats.outbound_start_time; 812 netif_wake_queue(dev); 813 return NETDEV_TX_OK; 814 } else if (rc == -EBUSY) { 815 return NETDEV_TX_BUSY; 816 } /* else fall through */ 817 818 tx_drop: 819 card->stats.tx_dropped++; 820 card->stats.tx_errors++; 821 dev_kfree_skb_any(skb); 822 netif_wake_queue(dev); 823 return NETDEV_TX_OK; 824 } 825 826 static int __qeth_l2_open(struct net_device *dev) 827 { 828 struct qeth_card *card = dev->ml_priv; 829 int rc = 0; 830 831 QETH_CARD_TEXT(card, 4, "qethopen"); 832 if (card->state == CARD_STATE_UP) 833 return rc; 834 if (card->state != CARD_STATE_SOFTSETUP) 835 return -ENODEV; 836 837 if ((card->info.type != QETH_CARD_TYPE_OSN) && 838 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 839 QETH_CARD_TEXT(card, 4, "nomacadr"); 840 return -EPERM; 841 } 842 card->data.state = CH_STATE_UP; 843 card->state = CARD_STATE_UP; 844 netif_start_queue(dev); 845 846 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 847 napi_enable(&card->napi); 848 napi_schedule(&card->napi); 849 } else 850 rc = -EIO; 851 return rc; 852 } 853 854 static int qeth_l2_open(struct net_device *dev) 855 { 856 struct qeth_card *card = dev->ml_priv; 857 858 QETH_CARD_TEXT(card, 5, "qethope_"); 859 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 860 QETH_CARD_TEXT(card, 3, "openREC"); 861 return -ERESTARTSYS; 862 } 863 return __qeth_l2_open(dev); 864 } 865 866 static int qeth_l2_stop(struct net_device *dev) 867 { 868 struct qeth_card *card = dev->ml_priv; 869 870 QETH_CARD_TEXT(card, 4, "qethstop"); 871 netif_tx_disable(dev); 872 if (card->state == CARD_STATE_UP) { 873 card->state = CARD_STATE_SOFTSETUP; 874 napi_disable(&card->napi); 875 } 876 return 0; 877 } 878 879 static const struct device_type qeth_l2_devtype = { 880 .name = "qeth_layer2", 881 .groups = qeth_l2_attr_groups, 882 }; 883 884 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 885 { 886 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 887 int rc; 888 889 if (gdev->dev.type == &qeth_generic_devtype) { 890 rc = qeth_l2_create_device_attributes(&gdev->dev); 891 if (rc) 892 return rc; 893 } 894 INIT_LIST_HEAD(&card->vid_list); 895 hash_init(card->mac_htable); 896 card->options.layer2 = 1; 897 card->info.hwtrap = 0; 898 qeth_l2_vnicc_set_defaults(card); 899 return 0; 900 } 901 902 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 903 { 904 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 905 906 if (cgdev->dev.type == &qeth_generic_devtype) 907 qeth_l2_remove_device_attributes(&cgdev->dev); 908 qeth_set_allowed_threads(card, 0, 1); 909 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 910 911 if (cgdev->state == CCWGROUP_ONLINE) 912 qeth_l2_set_offline(cgdev); 913 914 if (card->dev) { 915 unregister_netdev(card->dev); 916 free_netdev(card->dev); 917 card->dev = NULL; 918 } 919 return; 920 } 921 922 static const struct ethtool_ops qeth_l2_ethtool_ops = { 923 .get_link = ethtool_op_get_link, 924 .get_strings = qeth_core_get_strings, 925 .get_ethtool_stats = qeth_core_get_ethtool_stats, 926 .get_sset_count = qeth_core_get_sset_count, 927 .get_drvinfo = qeth_core_get_drvinfo, 928 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 929 }; 930 931 static const struct ethtool_ops qeth_l2_osn_ops = { 932 .get_strings = qeth_core_get_strings, 933 .get_ethtool_stats = qeth_core_get_ethtool_stats, 934 .get_sset_count = qeth_core_get_sset_count, 935 .get_drvinfo = qeth_core_get_drvinfo, 936 }; 937 938 static const struct net_device_ops qeth_l2_netdev_ops = { 939 .ndo_open = qeth_l2_open, 940 .ndo_stop = qeth_l2_stop, 941 .ndo_get_stats = qeth_get_stats, 942 .ndo_start_xmit = qeth_l2_hard_start_xmit, 943 .ndo_features_check = qeth_features_check, 944 .ndo_validate_addr = eth_validate_addr, 945 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 946 .ndo_do_ioctl = qeth_do_ioctl, 947 .ndo_set_mac_address = qeth_l2_set_mac_address, 948 .ndo_change_mtu = qeth_change_mtu, 949 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 950 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 951 .ndo_tx_timeout = qeth_tx_timeout, 952 .ndo_fix_features = qeth_fix_features, 953 .ndo_set_features = qeth_set_features 954 }; 955 956 static int qeth_l2_setup_netdev(struct qeth_card *card) 957 { 958 switch (card->info.type) { 959 case QETH_CARD_TYPE_IQD: 960 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 961 ether_setup); 962 break; 963 case QETH_CARD_TYPE_OSN: 964 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 965 ether_setup); 966 break; 967 default: 968 card->dev = alloc_etherdev(0); 969 } 970 971 if (!card->dev) 972 return -ENODEV; 973 974 card->dev->ml_priv = card; 975 card->dev->priv_flags |= IFF_UNICAST_FLT; 976 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 977 card->dev->mtu = card->info.initial_mtu; 978 card->dev->min_mtu = 64; 979 card->dev->max_mtu = ETH_MAX_MTU; 980 card->dev->netdev_ops = &qeth_l2_netdev_ops; 981 if (card->info.type == QETH_CARD_TYPE_OSN) { 982 card->dev->ethtool_ops = &qeth_l2_osn_ops; 983 card->dev->flags |= IFF_NOARP; 984 } else { 985 card->dev->ethtool_ops = &qeth_l2_ethtool_ops; 986 } 987 988 if (card->info.type == QETH_CARD_TYPE_OSM) 989 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 990 else 991 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 992 993 if (card->info.type != QETH_CARD_TYPE_OSN && 994 card->info.type != QETH_CARD_TYPE_IQD) { 995 card->dev->priv_flags &= ~IFF_TX_SKB_SHARING; 996 card->dev->needed_headroom = sizeof(struct qeth_hdr); 997 card->dev->hw_features |= NETIF_F_SG; 998 card->dev->vlan_features |= NETIF_F_SG; 999 } 1000 1001 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 1002 card->dev->features |= NETIF_F_SG; 1003 /* OSA 3S and earlier has no RX/TX support */ 1004 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 1005 card->dev->hw_features |= NETIF_F_IP_CSUM; 1006 card->dev->vlan_features |= NETIF_F_IP_CSUM; 1007 } 1008 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 1009 card->dev->hw_features |= NETIF_F_RXCSUM; 1010 card->dev->vlan_features |= NETIF_F_RXCSUM; 1011 } 1012 } 1013 1014 card->info.broadcast_capable = 1; 1015 qeth_l2_request_initial_mac(card); 1016 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1017 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 1018 netif_carrier_off(card->dev); 1019 return register_netdev(card->dev); 1020 } 1021 1022 static int qeth_l2_start_ipassists(struct qeth_card *card) 1023 { 1024 /* configure isolation level */ 1025 if (qeth_set_access_ctrl_online(card, 0)) 1026 return -ENODEV; 1027 return 0; 1028 } 1029 1030 static void qeth_l2_trace_features(struct qeth_card *card) 1031 { 1032 /* Set BridgePort features */ 1033 QETH_CARD_TEXT(card, 2, "featuSBP"); 1034 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 1035 sizeof(card->options.sbp.supported_funcs)); 1036 /* VNIC Characteristics features */ 1037 QETH_CARD_TEXT(card, 2, "feaVNICC"); 1038 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 1039 sizeof(card->options.vnicc.sup_chars)); 1040 } 1041 1042 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1043 { 1044 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1045 int rc = 0; 1046 enum qeth_card_states recover_flag; 1047 1048 mutex_lock(&card->discipline_mutex); 1049 mutex_lock(&card->conf_mutex); 1050 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1051 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1052 1053 recover_flag = card->state; 1054 rc = qeth_core_hardsetup_card(card); 1055 if (rc) { 1056 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1057 rc = -ENODEV; 1058 goto out_remove; 1059 } 1060 qeth_bridgeport_query_support(card); 1061 if (card->options.sbp.supported_funcs) 1062 dev_info(&card->gdev->dev, 1063 "The device represents a Bridge Capable Port\n"); 1064 1065 if (!card->dev && qeth_l2_setup_netdev(card)) { 1066 rc = -ENODEV; 1067 goto out_remove; 1068 } 1069 1070 if (card->info.type != QETH_CARD_TYPE_OSN) 1071 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1072 1073 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1074 if (card->info.hwtrap && 1075 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1076 card->info.hwtrap = 0; 1077 } else 1078 card->info.hwtrap = 0; 1079 1080 /* for the rx_bcast characteristic, init VNICC after setmac */ 1081 qeth_l2_vnicc_init(card); 1082 1083 qeth_trace_features(card); 1084 qeth_l2_trace_features(card); 1085 1086 qeth_l2_setup_bridgeport_attrs(card); 1087 1088 card->state = CARD_STATE_HARDSETUP; 1089 qeth_print_status_message(card); 1090 1091 /* softsetup */ 1092 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1093 1094 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1095 (card->info.type == QETH_CARD_TYPE_OSX)) { 1096 rc = qeth_l2_start_ipassists(card); 1097 if (rc) 1098 goto out_remove; 1099 } 1100 1101 if (card->info.type != QETH_CARD_TYPE_OSN) 1102 qeth_l2_process_vlans(card); 1103 1104 netif_tx_disable(card->dev); 1105 1106 rc = qeth_init_qdio_queues(card); 1107 if (rc) { 1108 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1109 rc = -ENODEV; 1110 goto out_remove; 1111 } 1112 card->state = CARD_STATE_SOFTSETUP; 1113 if (card->lan_online) 1114 netif_carrier_on(card->dev); 1115 else 1116 netif_carrier_off(card->dev); 1117 1118 qeth_set_allowed_threads(card, 0xffffffff, 0); 1119 if (recover_flag == CARD_STATE_RECOVER) { 1120 if (recovery_mode && 1121 card->info.type != QETH_CARD_TYPE_OSN) { 1122 __qeth_l2_open(card->dev); 1123 } else { 1124 rtnl_lock(); 1125 dev_open(card->dev); 1126 rtnl_unlock(); 1127 } 1128 /* this also sets saved unicast addresses */ 1129 qeth_l2_set_rx_mode(card->dev); 1130 rtnl_lock(); 1131 qeth_recover_features(card->dev); 1132 rtnl_unlock(); 1133 } 1134 /* let user_space know that device is online */ 1135 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1136 mutex_unlock(&card->conf_mutex); 1137 mutex_unlock(&card->discipline_mutex); 1138 return 0; 1139 1140 out_remove: 1141 qeth_l2_stop_card(card, 0); 1142 ccw_device_set_offline(CARD_DDEV(card)); 1143 ccw_device_set_offline(CARD_WDEV(card)); 1144 ccw_device_set_offline(CARD_RDEV(card)); 1145 qdio_free(CARD_DDEV(card)); 1146 if (recover_flag == CARD_STATE_RECOVER) 1147 card->state = CARD_STATE_RECOVER; 1148 else 1149 card->state = CARD_STATE_DOWN; 1150 mutex_unlock(&card->conf_mutex); 1151 mutex_unlock(&card->discipline_mutex); 1152 return rc; 1153 } 1154 1155 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1156 { 1157 return __qeth_l2_set_online(gdev, 0); 1158 } 1159 1160 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1161 int recovery_mode) 1162 { 1163 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1164 int rc = 0, rc2 = 0, rc3 = 0; 1165 enum qeth_card_states recover_flag; 1166 1167 mutex_lock(&card->discipline_mutex); 1168 mutex_lock(&card->conf_mutex); 1169 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1170 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1171 1172 if (card->dev && netif_carrier_ok(card->dev)) 1173 netif_carrier_off(card->dev); 1174 recover_flag = card->state; 1175 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1176 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1177 card->info.hwtrap = 1; 1178 } 1179 qeth_l2_stop_card(card, recovery_mode); 1180 rc = ccw_device_set_offline(CARD_DDEV(card)); 1181 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1182 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1183 if (!rc) 1184 rc = (rc2) ? rc2 : rc3; 1185 if (rc) 1186 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1187 qdio_free(CARD_DDEV(card)); 1188 if (recover_flag == CARD_STATE_UP) 1189 card->state = CARD_STATE_RECOVER; 1190 /* let user_space know that device is offline */ 1191 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1192 mutex_unlock(&card->conf_mutex); 1193 mutex_unlock(&card->discipline_mutex); 1194 return 0; 1195 } 1196 1197 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1198 { 1199 return __qeth_l2_set_offline(cgdev, 0); 1200 } 1201 1202 static int qeth_l2_recover(void *ptr) 1203 { 1204 struct qeth_card *card; 1205 int rc = 0; 1206 1207 card = (struct qeth_card *) ptr; 1208 QETH_CARD_TEXT(card, 2, "recover1"); 1209 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1210 return 0; 1211 QETH_CARD_TEXT(card, 2, "recover2"); 1212 dev_warn(&card->gdev->dev, 1213 "A recovery process has been started for the device\n"); 1214 qeth_set_recovery_task(card); 1215 __qeth_l2_set_offline(card->gdev, 1); 1216 rc = __qeth_l2_set_online(card->gdev, 1); 1217 if (!rc) 1218 dev_info(&card->gdev->dev, 1219 "Device successfully recovered!\n"); 1220 else { 1221 qeth_close_dev(card); 1222 dev_warn(&card->gdev->dev, "The qeth device driver " 1223 "failed to recover an error on the device\n"); 1224 } 1225 qeth_clear_recovery_task(card); 1226 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1227 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1228 return 0; 1229 } 1230 1231 static int __init qeth_l2_init(void) 1232 { 1233 pr_info("register layer 2 discipline\n"); 1234 return 0; 1235 } 1236 1237 static void __exit qeth_l2_exit(void) 1238 { 1239 pr_info("unregister layer 2 discipline\n"); 1240 } 1241 1242 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1243 { 1244 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1245 1246 if (card->dev) 1247 netif_device_detach(card->dev); 1248 qeth_set_allowed_threads(card, 0, 1); 1249 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1250 if (gdev->state == CCWGROUP_OFFLINE) 1251 return 0; 1252 if (card->state == CARD_STATE_UP) { 1253 if (card->info.hwtrap) 1254 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1255 __qeth_l2_set_offline(card->gdev, 1); 1256 } else 1257 __qeth_l2_set_offline(card->gdev, 0); 1258 return 0; 1259 } 1260 1261 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1262 { 1263 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1264 int rc = 0; 1265 1266 if (gdev->state == CCWGROUP_OFFLINE) 1267 goto out; 1268 1269 if (card->state == CARD_STATE_RECOVER) { 1270 rc = __qeth_l2_set_online(card->gdev, 1); 1271 if (rc) { 1272 rtnl_lock(); 1273 dev_close(card->dev); 1274 rtnl_unlock(); 1275 } 1276 } else 1277 rc = __qeth_l2_set_online(card->gdev, 0); 1278 out: 1279 qeth_set_allowed_threads(card, 0xffffffff, 0); 1280 if (card->dev) 1281 netif_device_attach(card->dev); 1282 if (rc) 1283 dev_warn(&card->gdev->dev, "The qeth device driver " 1284 "failed to recover an error on the device\n"); 1285 return rc; 1286 } 1287 1288 /* Returns zero if the command is successfully "consumed" */ 1289 static int qeth_l2_control_event(struct qeth_card *card, 1290 struct qeth_ipa_cmd *cmd) 1291 { 1292 switch (cmd->hdr.command) { 1293 case IPA_CMD_SETBRIDGEPORT_OSA: 1294 case IPA_CMD_SETBRIDGEPORT_IQD: 1295 if (cmd->data.sbp.hdr.command_code == 1296 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1297 qeth_bridge_state_change(card, cmd); 1298 return 0; 1299 } else 1300 return 1; 1301 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1302 qeth_bridge_host_event(card, cmd); 1303 return 0; 1304 default: 1305 return 1; 1306 } 1307 } 1308 1309 struct qeth_discipline qeth_l2_discipline = { 1310 .devtype = &qeth_l2_devtype, 1311 .start_poll = qeth_qdio_start_poll, 1312 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1313 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1314 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1315 .recover = qeth_l2_recover, 1316 .setup = qeth_l2_probe_device, 1317 .remove = qeth_l2_remove_device, 1318 .set_online = qeth_l2_set_online, 1319 .set_offline = qeth_l2_set_offline, 1320 .freeze = qeth_l2_pm_suspend, 1321 .thaw = qeth_l2_pm_resume, 1322 .restore = qeth_l2_pm_resume, 1323 .do_ioctl = NULL, 1324 .control_event_handler = qeth_l2_control_event, 1325 }; 1326 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1327 1328 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1329 struct qeth_cmd_buffer *iob) 1330 { 1331 unsigned long flags; 1332 int rc = 0; 1333 1334 QETH_CARD_TEXT(card, 5, "osndctrd"); 1335 1336 wait_event(card->wait_q, 1337 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1338 qeth_prepare_control_data(card, len, iob); 1339 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1340 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1341 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1342 (addr_t) iob, 0, 0); 1343 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1344 if (rc) { 1345 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1346 "ccw_device_start rc = %i\n", rc); 1347 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1348 qeth_release_buffer(iob->channel, iob); 1349 atomic_set(&card->write.irq_pending, 0); 1350 wake_up(&card->wait_q); 1351 } 1352 return rc; 1353 } 1354 1355 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1356 struct qeth_cmd_buffer *iob, int data_len) 1357 { 1358 u16 s1, s2; 1359 1360 QETH_CARD_TEXT(card, 4, "osndipa"); 1361 1362 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1363 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1364 s2 = (u16)data_len; 1365 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1366 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1367 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1368 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1369 return qeth_osn_send_control_data(card, s1, iob); 1370 } 1371 1372 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1373 { 1374 struct qeth_cmd_buffer *iob; 1375 struct qeth_card *card; 1376 1377 if (!dev) 1378 return -ENODEV; 1379 card = dev->ml_priv; 1380 if (!card) 1381 return -ENODEV; 1382 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1383 if (!qeth_card_hw_is_reachable(card)) 1384 return -ENODEV; 1385 iob = qeth_wait_for_buffer(&card->write); 1386 memcpy(__ipa_cmd(iob), data, data_len); 1387 return qeth_osn_send_ipa_cmd(card, iob, data_len); 1388 } 1389 EXPORT_SYMBOL(qeth_osn_assist); 1390 1391 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1392 int (*assist_cb)(struct net_device *, void *), 1393 int (*data_cb)(struct sk_buff *)) 1394 { 1395 struct qeth_card *card; 1396 1397 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1398 if (*dev == NULL) 1399 return -ENODEV; 1400 card = (*dev)->ml_priv; 1401 if (!card) 1402 return -ENODEV; 1403 QETH_CARD_TEXT(card, 2, "osnreg"); 1404 if ((assist_cb == NULL) || (data_cb == NULL)) 1405 return -EINVAL; 1406 card->osn_info.assist_cb = assist_cb; 1407 card->osn_info.data_cb = data_cb; 1408 return 0; 1409 } 1410 EXPORT_SYMBOL(qeth_osn_register); 1411 1412 void qeth_osn_deregister(struct net_device *dev) 1413 { 1414 struct qeth_card *card; 1415 1416 if (!dev) 1417 return; 1418 card = dev->ml_priv; 1419 if (!card) 1420 return; 1421 QETH_CARD_TEXT(card, 2, "osndereg"); 1422 card->osn_info.assist_cb = NULL; 1423 card->osn_info.data_cb = NULL; 1424 return; 1425 } 1426 EXPORT_SYMBOL(qeth_osn_deregister); 1427 1428 /* SETBRIDGEPORT support, async notifications */ 1429 1430 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1431 1432 /** 1433 * qeth_bridge_emit_host_event() - bridgeport address change notification 1434 * @card: qeth_card structure pointer, for udev events. 1435 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1436 * and reset token and addr_lnid are unused and may be NULL. 1437 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1438 * object, 0 - addition of an object. 1439 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1440 * @token: "network token" structure identifying physical address of the port. 1441 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1442 * 1443 * This function is called when registrations and deregistrations are 1444 * reported by the hardware, and also when notifications are enabled - 1445 * for all currently registered addresses. 1446 */ 1447 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1448 enum qeth_an_event_type evtype, 1449 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1450 { 1451 char str[7][32]; 1452 char *env[8]; 1453 int i = 0; 1454 1455 switch (evtype) { 1456 case anev_reg_unreg: 1457 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1458 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1459 ? "deregister" : "register"); 1460 env[i] = str[i]; i++; 1461 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1462 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1463 addr_lnid->lnid); 1464 env[i] = str[i]; i++; 1465 } 1466 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1467 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1468 addr_lnid->mac); 1469 env[i] = str[i]; i++; 1470 } 1471 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1472 token->cssid, token->ssid, token->devnum); 1473 env[i] = str[i]; i++; 1474 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1475 env[i] = str[i]; i++; 1476 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1477 token->chpid); 1478 env[i] = str[i]; i++; 1479 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1480 env[i] = str[i]; i++; 1481 break; 1482 case anev_abort: 1483 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1484 env[i] = str[i]; i++; 1485 break; 1486 case anev_reset: 1487 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1488 env[i] = str[i]; i++; 1489 break; 1490 } 1491 env[i] = NULL; 1492 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1493 } 1494 1495 struct qeth_bridge_state_data { 1496 struct work_struct worker; 1497 struct qeth_card *card; 1498 struct qeth_sbp_state_change qports; 1499 }; 1500 1501 static void qeth_bridge_state_change_worker(struct work_struct *work) 1502 { 1503 struct qeth_bridge_state_data *data = 1504 container_of(work, struct qeth_bridge_state_data, worker); 1505 /* We are only interested in the first entry - local port */ 1506 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1507 char env_locrem[32]; 1508 char env_role[32]; 1509 char env_state[32]; 1510 char *env[] = { 1511 env_locrem, 1512 env_role, 1513 env_state, 1514 NULL 1515 }; 1516 1517 /* Role should not change by itself, but if it did, */ 1518 /* information from the hardware is authoritative. */ 1519 mutex_lock(&data->card->conf_mutex); 1520 data->card->options.sbp.role = entry->role; 1521 mutex_unlock(&data->card->conf_mutex); 1522 1523 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1524 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1525 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1526 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1527 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1528 "<INVALID>"); 1529 snprintf(env_state, sizeof(env_state), "STATE=%s", 1530 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1531 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1532 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1533 "<INVALID>"); 1534 kobject_uevent_env(&data->card->gdev->dev.kobj, 1535 KOBJ_CHANGE, env); 1536 kfree(data); 1537 } 1538 1539 static void qeth_bridge_state_change(struct qeth_card *card, 1540 struct qeth_ipa_cmd *cmd) 1541 { 1542 struct qeth_sbp_state_change *qports = 1543 &cmd->data.sbp.data.state_change; 1544 struct qeth_bridge_state_data *data; 1545 int extrasize; 1546 1547 QETH_CARD_TEXT(card, 2, "brstchng"); 1548 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1549 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1550 return; 1551 } 1552 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1553 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1554 GFP_ATOMIC); 1555 if (!data) { 1556 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1557 return; 1558 } 1559 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1560 data->card = card; 1561 memcpy(&data->qports, qports, 1562 sizeof(struct qeth_sbp_state_change) + extrasize); 1563 queue_work(qeth_wq, &data->worker); 1564 } 1565 1566 struct qeth_bridge_host_data { 1567 struct work_struct worker; 1568 struct qeth_card *card; 1569 struct qeth_ipacmd_addr_change hostevs; 1570 }; 1571 1572 static void qeth_bridge_host_event_worker(struct work_struct *work) 1573 { 1574 struct qeth_bridge_host_data *data = 1575 container_of(work, struct qeth_bridge_host_data, worker); 1576 int i; 1577 1578 if (data->hostevs.lost_event_mask) { 1579 dev_info(&data->card->gdev->dev, 1580 "Address notification from the Bridge Port stopped %s (%s)\n", 1581 data->card->dev->name, 1582 (data->hostevs.lost_event_mask == 0x01) 1583 ? "Overflow" 1584 : (data->hostevs.lost_event_mask == 0x02) 1585 ? "Bridge port state change" 1586 : "Unknown reason"); 1587 mutex_lock(&data->card->conf_mutex); 1588 data->card->options.sbp.hostnotification = 0; 1589 mutex_unlock(&data->card->conf_mutex); 1590 qeth_bridge_emit_host_event(data->card, anev_abort, 1591 0, NULL, NULL); 1592 } else 1593 for (i = 0; i < data->hostevs.num_entries; i++) { 1594 struct qeth_ipacmd_addr_change_entry *entry = 1595 &data->hostevs.entry[i]; 1596 qeth_bridge_emit_host_event(data->card, 1597 anev_reg_unreg, 1598 entry->change_code, 1599 &entry->token, &entry->addr_lnid); 1600 } 1601 kfree(data); 1602 } 1603 1604 static void qeth_bridge_host_event(struct qeth_card *card, 1605 struct qeth_ipa_cmd *cmd) 1606 { 1607 struct qeth_ipacmd_addr_change *hostevs = 1608 &cmd->data.addrchange; 1609 struct qeth_bridge_host_data *data; 1610 int extrasize; 1611 1612 QETH_CARD_TEXT(card, 2, "brhostev"); 1613 if (cmd->hdr.return_code != 0x0000) { 1614 if (cmd->hdr.return_code == 0x0010) { 1615 if (hostevs->lost_event_mask == 0x00) 1616 hostevs->lost_event_mask = 0xff; 1617 } else { 1618 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1619 cmd->hdr.return_code); 1620 return; 1621 } 1622 } 1623 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1624 hostevs->num_entries; 1625 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1626 GFP_ATOMIC); 1627 if (!data) { 1628 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1629 return; 1630 } 1631 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1632 data->card = card; 1633 memcpy(&data->hostevs, hostevs, 1634 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1635 queue_work(qeth_wq, &data->worker); 1636 } 1637 1638 /* SETBRIDGEPORT support; sending commands */ 1639 1640 struct _qeth_sbp_cbctl { 1641 u16 ipa_rc; 1642 u16 cmd_rc; 1643 union { 1644 u32 supported; 1645 struct { 1646 enum qeth_sbp_roles *role; 1647 enum qeth_sbp_states *state; 1648 } qports; 1649 } data; 1650 }; 1651 1652 /** 1653 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1654 * @card: qeth_card structure pointer, for debug messages. 1655 * @cbctl: state structure with hardware return codes. 1656 * @setcmd: IPA command code 1657 * 1658 * Returns negative errno-compatible error indication or 0 on success. 1659 */ 1660 static int qeth_bridgeport_makerc(struct qeth_card *card, 1661 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1662 { 1663 int rc; 1664 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1665 1666 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1667 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1668 switch (cbctl->cmd_rc) { 1669 case IPA_RC_SUCCESS: 1670 rc = 0; 1671 break; 1672 case IPA_RC_L2_UNSUPPORTED_CMD: 1673 case IPA_RC_UNSUPPORTED_COMMAND: 1674 rc = -EOPNOTSUPP; 1675 break; 1676 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1677 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1678 rc = -ENODEV; /* maybe not the best code here? */ 1679 dev_err(&card->gdev->dev, 1680 "The device is not configured as a Bridge Port\n"); 1681 break; 1682 case IPA_RC_SBP_OSA_OS_MISMATCH: 1683 case IPA_RC_SBP_IQD_OS_MISMATCH: 1684 rc = -EPERM; 1685 dev_err(&card->gdev->dev, 1686 "A Bridge Port is already configured by a different operating system\n"); 1687 break; 1688 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1689 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1690 switch (setcmd) { 1691 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1692 rc = -EEXIST; 1693 dev_err(&card->gdev->dev, 1694 "The LAN already has a primary Bridge Port\n"); 1695 break; 1696 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1697 rc = -EBUSY; 1698 dev_err(&card->gdev->dev, 1699 "The device is already a primary Bridge Port\n"); 1700 break; 1701 default: 1702 rc = -EIO; 1703 } 1704 break; 1705 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1706 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1707 rc = -EBUSY; 1708 dev_err(&card->gdev->dev, 1709 "The device is already a secondary Bridge Port\n"); 1710 break; 1711 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1712 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1713 rc = -EEXIST; 1714 dev_err(&card->gdev->dev, 1715 "The LAN cannot have more secondary Bridge Ports\n"); 1716 break; 1717 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1718 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1719 rc = -EBUSY; 1720 dev_err(&card->gdev->dev, 1721 "The device is already a primary Bridge Port\n"); 1722 break; 1723 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1724 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1725 rc = -EACCES; 1726 dev_err(&card->gdev->dev, 1727 "The device is not authorized to be a Bridge Port\n"); 1728 break; 1729 default: 1730 rc = -EIO; 1731 } 1732 else 1733 switch (cbctl->ipa_rc) { 1734 case IPA_RC_NOTSUPP: 1735 rc = -EOPNOTSUPP; 1736 break; 1737 case IPA_RC_UNSUPPORTED_COMMAND: 1738 rc = -EOPNOTSUPP; 1739 break; 1740 default: 1741 rc = -EIO; 1742 } 1743 1744 if (rc) { 1745 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1746 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1747 } 1748 return rc; 1749 } 1750 1751 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1752 enum qeth_ipa_sbp_cmd sbp_cmd, 1753 unsigned int cmd_length) 1754 { 1755 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ? 1756 IPA_CMD_SETBRIDGEPORT_IQD : 1757 IPA_CMD_SETBRIDGEPORT_OSA; 1758 struct qeth_cmd_buffer *iob; 1759 struct qeth_ipa_cmd *cmd; 1760 1761 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0); 1762 if (!iob) 1763 return iob; 1764 cmd = __ipa_cmd(iob); 1765 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1766 cmd_length; 1767 cmd->data.sbp.hdr.command_code = sbp_cmd; 1768 cmd->data.sbp.hdr.used_total = 1; 1769 cmd->data.sbp.hdr.seq_no = 1; 1770 return iob; 1771 } 1772 1773 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1774 struct qeth_reply *reply, unsigned long data) 1775 { 1776 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1777 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1778 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1779 cbctl->ipa_rc = cmd->hdr.return_code; 1780 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1781 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1782 cbctl->data.supported = 1783 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1784 } else { 1785 cbctl->data.supported = 0; 1786 } 1787 return 0; 1788 } 1789 1790 /** 1791 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1792 * @card: qeth_card structure pointer. 1793 * 1794 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1795 * strucutre: card->options.sbp.supported_funcs. 1796 */ 1797 static void qeth_bridgeport_query_support(struct qeth_card *card) 1798 { 1799 struct qeth_cmd_buffer *iob; 1800 struct _qeth_sbp_cbctl cbctl; 1801 1802 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1803 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1804 sizeof(struct qeth_sbp_query_cmds_supp)); 1805 if (!iob) 1806 return; 1807 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1808 (void *)&cbctl) || 1809 qeth_bridgeport_makerc(card, &cbctl, 1810 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1811 /* non-zero makerc signifies failure, and produce messages */ 1812 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1813 return; 1814 } 1815 card->options.sbp.supported_funcs = cbctl.data.supported; 1816 } 1817 1818 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1819 struct qeth_reply *reply, unsigned long data) 1820 { 1821 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1822 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1823 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1824 1825 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1826 cbctl->ipa_rc = cmd->hdr.return_code; 1827 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1828 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1829 return 0; 1830 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1831 cbctl->cmd_rc = 0xffff; 1832 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1833 return 0; 1834 } 1835 /* first entry contains the state of the local port */ 1836 if (qports->num_entries > 0) { 1837 if (cbctl->data.qports.role) 1838 *cbctl->data.qports.role = qports->entry[0].role; 1839 if (cbctl->data.qports.state) 1840 *cbctl->data.qports.state = qports->entry[0].state; 1841 } 1842 return 0; 1843 } 1844 1845 /** 1846 * qeth_bridgeport_query_ports() - query local bridgeport status. 1847 * @card: qeth_card structure pointer. 1848 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1849 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1850 * 1851 * Returns negative errno-compatible error indication or 0 on success. 1852 * 1853 * 'role' and 'state' are not updated in case of hardware operation failure. 1854 */ 1855 int qeth_bridgeport_query_ports(struct qeth_card *card, 1856 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1857 { 1858 int rc = 0; 1859 struct qeth_cmd_buffer *iob; 1860 struct _qeth_sbp_cbctl cbctl = { 1861 .data = { 1862 .qports = { 1863 .role = role, 1864 .state = state, 1865 }, 1866 }, 1867 }; 1868 1869 QETH_CARD_TEXT(card, 2, "brqports"); 1870 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1871 return -EOPNOTSUPP; 1872 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1873 if (!iob) 1874 return -ENOMEM; 1875 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1876 (void *)&cbctl); 1877 if (rc < 0) 1878 return rc; 1879 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1880 } 1881 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1882 1883 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1884 struct qeth_reply *reply, unsigned long data) 1885 { 1886 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1887 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1888 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1889 cbctl->ipa_rc = cmd->hdr.return_code; 1890 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1891 return 0; 1892 } 1893 1894 /** 1895 * qeth_bridgeport_setrole() - Assign primary role to the port. 1896 * @card: qeth_card structure pointer. 1897 * @role: Role to assign. 1898 * 1899 * Returns negative errno-compatible error indication or 0 on success. 1900 */ 1901 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1902 { 1903 int rc = 0; 1904 int cmdlength; 1905 struct qeth_cmd_buffer *iob; 1906 struct _qeth_sbp_cbctl cbctl; 1907 enum qeth_ipa_sbp_cmd setcmd; 1908 1909 QETH_CARD_TEXT(card, 2, "brsetrol"); 1910 switch (role) { 1911 case QETH_SBP_ROLE_NONE: 1912 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1913 cmdlength = sizeof(struct qeth_sbp_reset_role); 1914 break; 1915 case QETH_SBP_ROLE_PRIMARY: 1916 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1917 cmdlength = sizeof(struct qeth_sbp_set_primary); 1918 break; 1919 case QETH_SBP_ROLE_SECONDARY: 1920 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1921 cmdlength = sizeof(struct qeth_sbp_set_secondary); 1922 break; 1923 default: 1924 return -EINVAL; 1925 } 1926 if (!(card->options.sbp.supported_funcs & setcmd)) 1927 return -EOPNOTSUPP; 1928 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1929 if (!iob) 1930 return -ENOMEM; 1931 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 1932 (void *)&cbctl); 1933 if (rc < 0) 1934 return rc; 1935 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 1936 } 1937 1938 /** 1939 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1940 * @card: qeth_card structure pointer, for debug messages. 1941 * 1942 * Returns negative errno-compatible error indication or 0 on success. 1943 */ 1944 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1945 { 1946 int rc; 1947 1948 if (pnso_rc == 0) 1949 switch (response) { 1950 case 0x0001: 1951 rc = 0; 1952 break; 1953 case 0x0004: 1954 case 0x0100: 1955 case 0x0106: 1956 rc = -EOPNOTSUPP; 1957 dev_err(&card->gdev->dev, 1958 "Setting address notification failed\n"); 1959 break; 1960 case 0x0107: 1961 rc = -EAGAIN; 1962 break; 1963 default: 1964 rc = -EIO; 1965 } 1966 else 1967 rc = -EIO; 1968 1969 if (rc) { 1970 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1971 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1972 } 1973 return rc; 1974 } 1975 1976 static void qeth_bridgeport_an_set_cb(void *priv, 1977 enum qdio_brinfo_entry_type type, void *entry) 1978 { 1979 struct qeth_card *card = (struct qeth_card *)priv; 1980 struct qdio_brinfo_entry_l2 *l2entry; 1981 u8 code; 1982 1983 if (type != l2_addr_lnid) { 1984 WARN_ON_ONCE(1); 1985 return; 1986 } 1987 1988 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1989 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1990 if (l2entry->addr_lnid.lnid) 1991 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1992 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1993 (struct net_if_token *)&l2entry->nit, 1994 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1995 } 1996 1997 /** 1998 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1999 * @card: qeth_card structure pointer. 2000 * @enable: 0 - disable, non-zero - enable notifications 2001 * 2002 * Returns negative errno-compatible error indication or 0 on success. 2003 * 2004 * On enable, emits a series of address notifications udev events for all 2005 * currently registered hosts. 2006 */ 2007 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2008 { 2009 int rc; 2010 u16 response; 2011 struct ccw_device *ddev; 2012 struct subchannel_id schid; 2013 2014 if (!card) 2015 return -EINVAL; 2016 if (!card->options.sbp.supported_funcs) 2017 return -EOPNOTSUPP; 2018 ddev = CARD_DDEV(card); 2019 ccw_device_get_schid(ddev, &schid); 2020 2021 if (enable) { 2022 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2023 rc = qdio_pnso_brinfo(schid, 1, &response, 2024 qeth_bridgeport_an_set_cb, card); 2025 } else 2026 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2027 return qeth_anset_makerc(card, rc, response); 2028 } 2029 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2030 2031 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 2032 { 2033 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 2034 card->options.sbp.hostnotification); 2035 } 2036 2037 /* VNIC Characteristics support */ 2038 2039 /* handle VNICC IPA command return codes; convert to error codes */ 2040 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc) 2041 { 2042 int rc; 2043 2044 switch (ipa_rc) { 2045 case IPA_RC_SUCCESS: 2046 return ipa_rc; 2047 case IPA_RC_L2_UNSUPPORTED_CMD: 2048 case IPA_RC_NOTSUPP: 2049 rc = -EOPNOTSUPP; 2050 break; 2051 case IPA_RC_VNICC_OOSEQ: 2052 rc = -EALREADY; 2053 break; 2054 case IPA_RC_VNICC_VNICBP: 2055 rc = -EBUSY; 2056 break; 2057 case IPA_RC_L2_ADDR_TABLE_FULL: 2058 rc = -ENOSPC; 2059 break; 2060 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 2061 rc = -EACCES; 2062 break; 2063 default: 2064 rc = -EIO; 2065 } 2066 2067 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 2068 return rc; 2069 } 2070 2071 /* generic VNICC request call back control */ 2072 struct _qeth_l2_vnicc_request_cbctl { 2073 u32 sub_cmd; 2074 struct { 2075 u32 vnic_char; 2076 u32 timeout; 2077 } param; 2078 struct { 2079 union{ 2080 u32 *sup_cmds; 2081 u32 *timeout; 2082 }; 2083 } result; 2084 }; 2085 2086 /* generic VNICC request call back */ 2087 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 2088 struct qeth_reply *reply, 2089 unsigned long data) 2090 { 2091 struct _qeth_l2_vnicc_request_cbctl *cbctl = 2092 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 2093 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2094 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 2095 2096 QETH_CARD_TEXT(card, 2, "vniccrcb"); 2097 if (cmd->hdr.return_code) 2098 return 0; 2099 /* return results to caller */ 2100 card->options.vnicc.sup_chars = rep->hdr.sup; 2101 card->options.vnicc.cur_chars = rep->hdr.cur; 2102 2103 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS) 2104 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds; 2105 2106 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT) 2107 *cbctl->result.timeout = rep->getset_timeout.timeout; 2108 2109 return 0; 2110 } 2111 2112 /* generic VNICC request */ 2113 static int qeth_l2_vnicc_request(struct qeth_card *card, 2114 struct _qeth_l2_vnicc_request_cbctl *cbctl) 2115 { 2116 struct qeth_ipacmd_vnicc *req; 2117 struct qeth_cmd_buffer *iob; 2118 struct qeth_ipa_cmd *cmd; 2119 int rc; 2120 2121 QETH_CARD_TEXT(card, 2, "vniccreq"); 2122 2123 /* get new buffer for request */ 2124 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0); 2125 if (!iob) 2126 return -ENOMEM; 2127 2128 /* create header for request */ 2129 cmd = __ipa_cmd(iob); 2130 req = &cmd->data.vnicc; 2131 2132 /* create sub command header for request */ 2133 req->sub_hdr.data_length = sizeof(req->sub_hdr); 2134 req->sub_hdr.sub_command = cbctl->sub_cmd; 2135 2136 /* create sub command specific request fields */ 2137 switch (cbctl->sub_cmd) { 2138 case IPA_VNICC_QUERY_CHARS: 2139 break; 2140 case IPA_VNICC_QUERY_CMDS: 2141 req->sub_hdr.data_length += sizeof(req->query_cmds); 2142 req->query_cmds.vnic_char = cbctl->param.vnic_char; 2143 break; 2144 case IPA_VNICC_ENABLE: 2145 case IPA_VNICC_DISABLE: 2146 req->sub_hdr.data_length += sizeof(req->set_char); 2147 req->set_char.vnic_char = cbctl->param.vnic_char; 2148 break; 2149 case IPA_VNICC_SET_TIMEOUT: 2150 req->getset_timeout.timeout = cbctl->param.timeout; 2151 /* fallthrough */ 2152 case IPA_VNICC_GET_TIMEOUT: 2153 req->sub_hdr.data_length += sizeof(req->getset_timeout); 2154 req->getset_timeout.vnic_char = cbctl->param.vnic_char; 2155 break; 2156 default: 2157 qeth_release_buffer(iob->channel, iob); 2158 return -EOPNOTSUPP; 2159 } 2160 2161 /* send request */ 2162 rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, 2163 (void *) cbctl); 2164 2165 return qeth_l2_vnicc_makerc(card, rc); 2166 } 2167 2168 /* VNICC query VNIC characteristics request */ 2169 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 2170 { 2171 struct _qeth_l2_vnicc_request_cbctl cbctl; 2172 2173 /* prepare callback control */ 2174 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS; 2175 2176 QETH_CARD_TEXT(card, 2, "vniccqch"); 2177 return qeth_l2_vnicc_request(card, &cbctl); 2178 } 2179 2180 /* VNICC query sub commands request */ 2181 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 2182 u32 *sup_cmds) 2183 { 2184 struct _qeth_l2_vnicc_request_cbctl cbctl; 2185 2186 /* prepare callback control */ 2187 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS; 2188 cbctl.param.vnic_char = vnic_char; 2189 cbctl.result.sup_cmds = sup_cmds; 2190 2191 QETH_CARD_TEXT(card, 2, "vniccqcm"); 2192 return qeth_l2_vnicc_request(card, &cbctl); 2193 } 2194 2195 /* VNICC enable/disable characteristic request */ 2196 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 2197 u32 cmd) 2198 { 2199 struct _qeth_l2_vnicc_request_cbctl cbctl; 2200 2201 /* prepare callback control */ 2202 cbctl.sub_cmd = cmd; 2203 cbctl.param.vnic_char = vnic_char; 2204 2205 QETH_CARD_TEXT(card, 2, "vniccedc"); 2206 return qeth_l2_vnicc_request(card, &cbctl); 2207 } 2208 2209 /* VNICC get/set timeout for characteristic request */ 2210 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 2211 u32 cmd, u32 *timeout) 2212 { 2213 struct _qeth_l2_vnicc_request_cbctl cbctl; 2214 2215 /* prepare callback control */ 2216 cbctl.sub_cmd = cmd; 2217 cbctl.param.vnic_char = vnicc; 2218 if (cmd == IPA_VNICC_SET_TIMEOUT) 2219 cbctl.param.timeout = *timeout; 2220 if (cmd == IPA_VNICC_GET_TIMEOUT) 2221 cbctl.result.timeout = timeout; 2222 2223 QETH_CARD_TEXT(card, 2, "vniccgst"); 2224 return qeth_l2_vnicc_request(card, &cbctl); 2225 } 2226 2227 /* set current VNICC flag state; called from sysfs store function */ 2228 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 2229 { 2230 int rc = 0; 2231 u32 cmd; 2232 2233 QETH_CARD_TEXT(card, 2, "vniccsch"); 2234 2235 /* do not change anything if BridgePort is enabled */ 2236 if (qeth_bridgeport_is_in_use(card)) 2237 return -EBUSY; 2238 2239 /* check if characteristic and enable/disable are supported */ 2240 if (!(card->options.vnicc.sup_chars & vnicc) || 2241 !(card->options.vnicc.set_char_sup & vnicc)) 2242 return -EOPNOTSUPP; 2243 2244 /* set enable/disable command and store wanted characteristic */ 2245 if (state) { 2246 cmd = IPA_VNICC_ENABLE; 2247 card->options.vnicc.wanted_chars |= vnicc; 2248 } else { 2249 cmd = IPA_VNICC_DISABLE; 2250 card->options.vnicc.wanted_chars &= ~vnicc; 2251 } 2252 2253 /* do we need to do anything? */ 2254 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 2255 return rc; 2256 2257 /* if card is not ready, simply stop here */ 2258 if (!qeth_card_hw_is_reachable(card)) { 2259 if (state) 2260 card->options.vnicc.cur_chars |= vnicc; 2261 else 2262 card->options.vnicc.cur_chars &= ~vnicc; 2263 return rc; 2264 } 2265 2266 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 2267 if (rc) 2268 card->options.vnicc.wanted_chars = 2269 card->options.vnicc.cur_chars; 2270 else { 2271 /* successful online VNICC change; handle special cases */ 2272 if (state && vnicc == QETH_VNICC_RX_BCAST) 2273 card->options.vnicc.rx_bcast_enabled = true; 2274 if (!state && vnicc == QETH_VNICC_LEARNING) 2275 qeth_l2_vnicc_recover_timeout(card, vnicc, 2276 &card->options.vnicc.learning_timeout); 2277 } 2278 2279 return rc; 2280 } 2281 2282 /* get current VNICC flag state; called from sysfs show function */ 2283 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 2284 { 2285 int rc = 0; 2286 2287 QETH_CARD_TEXT(card, 2, "vniccgch"); 2288 2289 /* do not get anything if BridgePort is enabled */ 2290 if (qeth_bridgeport_is_in_use(card)) 2291 return -EBUSY; 2292 2293 /* check if characteristic is supported */ 2294 if (!(card->options.vnicc.sup_chars & vnicc)) 2295 return -EOPNOTSUPP; 2296 2297 /* if card is ready, query current VNICC state */ 2298 if (qeth_card_hw_is_reachable(card)) 2299 rc = qeth_l2_vnicc_query_chars(card); 2300 2301 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 2302 return rc; 2303 } 2304 2305 /* set VNICC timeout; called from sysfs store function. Currently, only learning 2306 * supports timeout 2307 */ 2308 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 2309 { 2310 int rc = 0; 2311 2312 QETH_CARD_TEXT(card, 2, "vniccsto"); 2313 2314 /* do not change anything if BridgePort is enabled */ 2315 if (qeth_bridgeport_is_in_use(card)) 2316 return -EBUSY; 2317 2318 /* check if characteristic and set_timeout are supported */ 2319 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2320 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2321 return -EOPNOTSUPP; 2322 2323 /* do we need to do anything? */ 2324 if (card->options.vnicc.learning_timeout == timeout) 2325 return rc; 2326 2327 /* if card is not ready, simply store the value internally and return */ 2328 if (!qeth_card_hw_is_reachable(card)) { 2329 card->options.vnicc.learning_timeout = timeout; 2330 return rc; 2331 } 2332 2333 /* send timeout value to card; if successful, store value internally */ 2334 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2335 IPA_VNICC_SET_TIMEOUT, &timeout); 2336 if (!rc) 2337 card->options.vnicc.learning_timeout = timeout; 2338 2339 return rc; 2340 } 2341 2342 /* get current VNICC timeout; called from sysfs show function. Currently, only 2343 * learning supports timeout 2344 */ 2345 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 2346 { 2347 int rc = 0; 2348 2349 QETH_CARD_TEXT(card, 2, "vniccgto"); 2350 2351 /* do not get anything if BridgePort is enabled */ 2352 if (qeth_bridgeport_is_in_use(card)) 2353 return -EBUSY; 2354 2355 /* check if characteristic and get_timeout are supported */ 2356 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2357 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2358 return -EOPNOTSUPP; 2359 /* if card is ready, get timeout. Otherwise, just return stored value */ 2360 *timeout = card->options.vnicc.learning_timeout; 2361 if (qeth_card_hw_is_reachable(card)) 2362 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2363 IPA_VNICC_GET_TIMEOUT, 2364 timeout); 2365 2366 return rc; 2367 } 2368 2369 /* check if VNICC is currently enabled */ 2370 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 2371 { 2372 /* if everything is turned off, VNICC is not active */ 2373 if (!card->options.vnicc.cur_chars) 2374 return false; 2375 /* default values are only OK if rx_bcast was not enabled by user 2376 * or the card is offline. 2377 */ 2378 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 2379 if (!card->options.vnicc.rx_bcast_enabled || 2380 !qeth_card_hw_is_reachable(card)) 2381 return false; 2382 } 2383 return true; 2384 } 2385 2386 /* recover user timeout setting */ 2387 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 2388 u32 *timeout) 2389 { 2390 if (card->options.vnicc.sup_chars & vnicc && 2391 card->options.vnicc.getset_timeout_sup & vnicc && 2392 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 2393 timeout)) 2394 return false; 2395 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2396 return true; 2397 } 2398 2399 /* recover user characteristic setting */ 2400 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2401 bool enable) 2402 { 2403 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2404 2405 if (card->options.vnicc.sup_chars & vnicc && 2406 card->options.vnicc.set_char_sup & vnicc && 2407 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2408 return false; 2409 card->options.vnicc.wanted_chars &= ~vnicc; 2410 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2411 return true; 2412 } 2413 2414 /* (re-)initialize VNICC */ 2415 static void qeth_l2_vnicc_init(struct qeth_card *card) 2416 { 2417 u32 *timeout = &card->options.vnicc.learning_timeout; 2418 unsigned int chars_len, i; 2419 unsigned long chars_tmp; 2420 u32 sup_cmds, vnicc; 2421 bool enable, error; 2422 2423 QETH_CARD_TEXT(card, 2, "vniccini"); 2424 /* reset rx_bcast */ 2425 card->options.vnicc.rx_bcast_enabled = 0; 2426 /* initial query and storage of VNIC characteristics */ 2427 if (qeth_l2_vnicc_query_chars(card)) { 2428 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2429 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2430 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2431 /* fail quietly if user didn't change the default config */ 2432 card->options.vnicc.sup_chars = 0; 2433 card->options.vnicc.cur_chars = 0; 2434 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2435 return; 2436 } 2437 /* get supported commands for each supported characteristic */ 2438 chars_tmp = card->options.vnicc.sup_chars; 2439 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2440 for_each_set_bit(i, &chars_tmp, chars_len) { 2441 vnicc = BIT(i); 2442 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds); 2443 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) || 2444 !(sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2445 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2446 if (!(sup_cmds & IPA_VNICC_ENABLE) || 2447 !(sup_cmds & IPA_VNICC_DISABLE)) 2448 card->options.vnicc.set_char_sup &= ~vnicc; 2449 } 2450 /* enforce assumed default values and recover settings, if changed */ 2451 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2452 timeout); 2453 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; 2454 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; 2455 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2456 for_each_set_bit(i, &chars_tmp, chars_len) { 2457 vnicc = BIT(i); 2458 enable = card->options.vnicc.wanted_chars & vnicc; 2459 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2460 } 2461 if (error) 2462 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2463 } 2464 2465 /* configure default values of VNIC characteristics */ 2466 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2467 { 2468 /* characteristics values */ 2469 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2470 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2471 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2472 /* supported commands */ 2473 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2474 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2475 /* settings wanted by users */ 2476 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2477 } 2478 2479 module_init(qeth_l2_init); 2480 module_exit(qeth_l2_exit); 2481 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2482 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2483 MODULE_LICENSE("GPL"); 2484