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 <linux/string.h> 25 #include <asm/setup.h> 26 #include "qeth_core.h" 27 #include "qeth_l2.h" 28 29 static int qeth_l2_set_offline(struct ccwgroup_device *); 30 static int qeth_l2_stop(struct net_device *); 31 static void qeth_l2_set_rx_mode(struct net_device *); 32 static void qeth_bridgeport_query_support(struct qeth_card *card); 33 static void qeth_bridge_state_change(struct qeth_card *card, 34 struct qeth_ipa_cmd *cmd); 35 static void qeth_bridge_host_event(struct qeth_card *card, 36 struct qeth_ipa_cmd *cmd); 37 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); 38 static void qeth_l2_vnicc_init(struct qeth_card *card); 39 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 40 u32 *timeout); 41 42 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 43 { 44 struct qeth_card *card; 45 struct net_device *ndev; 46 __u16 temp_dev_no; 47 unsigned long flags; 48 struct ccw_dev_id read_devid; 49 50 ndev = NULL; 51 memcpy(&temp_dev_no, read_dev_no, 2); 52 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 53 list_for_each_entry(card, &qeth_core_card_list.list, list) { 54 ccw_device_get_id(CARD_RDEV(card), &read_devid); 55 if (read_devid.devno == temp_dev_no) { 56 ndev = card->dev; 57 break; 58 } 59 } 60 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 61 return ndev; 62 } 63 64 static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode) 65 { 66 int rc; 67 68 if (retcode) 69 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 70 switch (retcode) { 71 case IPA_RC_SUCCESS: 72 rc = 0; 73 break; 74 case IPA_RC_L2_UNSUPPORTED_CMD: 75 rc = -EOPNOTSUPP; 76 break; 77 case IPA_RC_L2_ADDR_TABLE_FULL: 78 rc = -ENOSPC; 79 break; 80 case IPA_RC_L2_DUP_MAC: 81 case IPA_RC_L2_DUP_LAYER3_MAC: 82 rc = -EEXIST; 83 break; 84 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 85 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 86 rc = -EPERM; 87 break; 88 case IPA_RC_L2_MAC_NOT_FOUND: 89 rc = -ENOENT; 90 break; 91 case -ENOMEM: 92 rc = -ENOMEM; 93 break; 94 default: 95 rc = -EIO; 96 break; 97 } 98 return rc; 99 } 100 101 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 102 enum qeth_ipa_cmds ipacmd) 103 { 104 struct qeth_ipa_cmd *cmd; 105 struct qeth_cmd_buffer *iob; 106 107 QETH_CARD_TEXT(card, 2, "L2sdmac"); 108 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 109 if (!iob) 110 return -ENOMEM; 111 cmd = __ipa_cmd(iob); 112 cmd->data.setdelmac.mac_length = ETH_ALEN; 113 ether_addr_copy(cmd->data.setdelmac.mac, mac); 114 return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob, 115 NULL, NULL)); 116 } 117 118 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 119 { 120 int rc; 121 122 QETH_CARD_TEXT(card, 2, "L2Setmac"); 123 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 124 if (rc == 0) { 125 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 126 ether_addr_copy(card->dev->dev_addr, mac); 127 dev_info(&card->gdev->dev, 128 "MAC address %pM successfully registered on device %s\n", 129 card->dev->dev_addr, card->dev->name); 130 } else { 131 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 132 switch (rc) { 133 case -EEXIST: 134 dev_warn(&card->gdev->dev, 135 "MAC address %pM already exists\n", mac); 136 break; 137 case -EPERM: 138 dev_warn(&card->gdev->dev, 139 "MAC address %pM is not authorized\n", mac); 140 break; 141 } 142 } 143 return rc; 144 } 145 146 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 147 { 148 int rc; 149 150 QETH_CARD_TEXT(card, 2, "L2Delmac"); 151 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 152 return 0; 153 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC); 154 if (rc == 0) 155 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 156 return rc; 157 } 158 159 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) 160 { 161 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ? 162 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC; 163 int rc; 164 165 QETH_CARD_TEXT(card, 2, "L2Wmac"); 166 rc = qeth_l2_send_setdelmac(card, mac, cmd); 167 if (rc == -EEXIST) 168 QETH_DBF_MESSAGE(2, "MAC %pM already registered on %s\n", 169 mac, QETH_CARD_IFNAME(card)); 170 else if (rc) 171 QETH_DBF_MESSAGE(2, "Failed to register MAC %pM on %s: %d\n", 172 mac, QETH_CARD_IFNAME(card), rc); 173 return rc; 174 } 175 176 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) 177 { 178 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ? 179 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; 180 int rc; 181 182 QETH_CARD_TEXT(card, 2, "L2Rmac"); 183 rc = qeth_l2_send_setdelmac(card, mac, cmd); 184 if (rc) 185 QETH_DBF_MESSAGE(2, "Failed to delete MAC %pM on %s: %d\n", 186 mac, QETH_CARD_IFNAME(card), rc); 187 return rc; 188 } 189 190 static void qeth_l2_del_all_macs(struct qeth_card *card) 191 { 192 struct qeth_mac *mac; 193 struct hlist_node *tmp; 194 int i; 195 196 spin_lock_bh(&card->mclock); 197 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 198 hash_del(&mac->hnode); 199 kfree(mac); 200 } 201 spin_unlock_bh(&card->mclock); 202 } 203 204 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 205 { 206 if (card->info.type == QETH_CARD_TYPE_OSN) 207 return RTN_UNSPEC; 208 if (is_broadcast_ether_addr(skb->data)) 209 return RTN_BROADCAST; 210 if (is_multicast_ether_addr(skb->data)) 211 return RTN_MULTICAST; 212 return RTN_UNSPEC; 213 } 214 215 static void qeth_l2_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr, 216 struct sk_buff *skb) 217 { 218 struct iphdr *iph = ip_hdr(skb); 219 220 /* tcph->check contains already the pseudo hdr checksum 221 * so just set the header flags 222 */ 223 if (iph->protocol == IPPROTO_UDP) 224 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; 225 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 226 QETH_HDR_EXT_CSUM_HDR_REQ; 227 iph->check = 0; 228 if (card->options.performance_stats) 229 card->perf_stats.tx_csum++; 230 } 231 232 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb, 233 int cast_type, unsigned int data_len) 234 { 235 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 236 237 memset(hdr, 0, sizeof(struct qeth_hdr)); 238 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 239 hdr->hdr.l2.pkt_length = data_len; 240 241 /* set byte byte 3 to casting flags */ 242 if (cast_type == RTN_MULTICAST) 243 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 244 else if (cast_type == RTN_BROADCAST) 245 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 246 else 247 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 248 249 /* VSWITCH relies on the VLAN 250 * information to be present in 251 * the QDIO header */ 252 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 253 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 254 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 255 } 256 } 257 258 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode) 259 { 260 if (retcode) 261 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 262 263 switch (retcode) { 264 case IPA_RC_SUCCESS: 265 return 0; 266 case IPA_RC_L2_INVALID_VLAN_ID: 267 return -EINVAL; 268 case IPA_RC_L2_DUP_VLAN_ID: 269 return -EEXIST; 270 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 271 return -ENOENT; 272 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 273 return -EPERM; 274 case -ENOMEM: 275 return -ENOMEM; 276 default: 277 return -EIO; 278 } 279 } 280 281 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 282 struct qeth_reply *reply, 283 unsigned long data) 284 { 285 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 286 287 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 288 if (cmd->hdr.return_code) { 289 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n", 290 cmd->data.setdelvlan.vlan_id, 291 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 292 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 293 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 294 } 295 return 0; 296 } 297 298 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 299 enum qeth_ipa_cmds ipacmd) 300 { 301 struct qeth_ipa_cmd *cmd; 302 struct qeth_cmd_buffer *iob; 303 304 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 305 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 306 if (!iob) 307 return -ENOMEM; 308 cmd = __ipa_cmd(iob); 309 cmd->data.setdelvlan.vlan_id = i; 310 return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob, 311 qeth_l2_send_setdelvlan_cb, NULL)); 312 } 313 314 static void qeth_l2_process_vlans(struct qeth_card *card) 315 { 316 struct qeth_vlan_vid *id; 317 QETH_CARD_TEXT(card, 3, "L2prcvln"); 318 spin_lock_bh(&card->vlanlock); 319 list_for_each_entry(id, &card->vid_list, list) { 320 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 321 } 322 spin_unlock_bh(&card->vlanlock); 323 } 324 325 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 326 __be16 proto, u16 vid) 327 { 328 struct qeth_card *card = dev->ml_priv; 329 struct qeth_vlan_vid *id; 330 int rc; 331 332 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 333 if (!vid) 334 return 0; 335 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 336 QETH_CARD_TEXT(card, 3, "aidREC"); 337 return 0; 338 } 339 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 340 if (id) { 341 id->vid = vid; 342 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 343 if (rc) { 344 kfree(id); 345 return rc; 346 } 347 spin_lock_bh(&card->vlanlock); 348 list_add_tail(&id->list, &card->vid_list); 349 spin_unlock_bh(&card->vlanlock); 350 } else { 351 return -ENOMEM; 352 } 353 return 0; 354 } 355 356 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 357 __be16 proto, u16 vid) 358 { 359 struct qeth_vlan_vid *id, *tmpid = NULL; 360 struct qeth_card *card = dev->ml_priv; 361 int rc = 0; 362 363 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 364 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 365 QETH_CARD_TEXT(card, 3, "kidREC"); 366 return 0; 367 } 368 spin_lock_bh(&card->vlanlock); 369 list_for_each_entry(id, &card->vid_list, list) { 370 if (id->vid == vid) { 371 list_del(&id->list); 372 tmpid = id; 373 break; 374 } 375 } 376 spin_unlock_bh(&card->vlanlock); 377 if (tmpid) { 378 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 379 kfree(tmpid); 380 } 381 qeth_l2_set_rx_mode(card->dev); 382 return rc; 383 } 384 385 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 386 { 387 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 388 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 389 390 qeth_set_allowed_threads(card, 0, 1); 391 if (card->read.state == CH_STATE_UP && 392 card->write.state == CH_STATE_UP && 393 (card->state == CARD_STATE_UP)) { 394 if (recovery_mode && 395 card->info.type != QETH_CARD_TYPE_OSN) { 396 qeth_l2_stop(card->dev); 397 } else { 398 rtnl_lock(); 399 dev_close(card->dev); 400 rtnl_unlock(); 401 } 402 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 403 card->state = CARD_STATE_SOFTSETUP; 404 } 405 if (card->state == CARD_STATE_SOFTSETUP) { 406 qeth_l2_del_all_macs(card); 407 qeth_clear_ipacmd_list(card); 408 card->state = CARD_STATE_HARDSETUP; 409 } 410 if (card->state == CARD_STATE_HARDSETUP) { 411 qeth_qdio_clear_card(card, 0); 412 qeth_clear_qdio_buffers(card); 413 qeth_clear_working_pool_list(card); 414 card->state = CARD_STATE_DOWN; 415 } 416 if (card->state == CARD_STATE_DOWN) { 417 qeth_clear_cmd_buffers(&card->read); 418 qeth_clear_cmd_buffers(&card->write); 419 } 420 } 421 422 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 423 int budget, int *done) 424 { 425 int work_done = 0; 426 struct sk_buff *skb; 427 struct qeth_hdr *hdr; 428 unsigned int len; 429 430 *done = 0; 431 WARN_ON_ONCE(!budget); 432 while (budget) { 433 skb = qeth_core_get_next_skb(card, 434 &card->qdio.in_q->bufs[card->rx.b_index], 435 &card->rx.b_element, &card->rx.e_offset, &hdr); 436 if (!skb) { 437 *done = 1; 438 break; 439 } 440 switch (hdr->hdr.l2.id) { 441 case QETH_HEADER_TYPE_LAYER2: 442 skb->protocol = eth_type_trans(skb, skb->dev); 443 if ((card->dev->features & NETIF_F_RXCSUM) 444 && ((hdr->hdr.l2.flags[1] & 445 (QETH_HDR_EXT_CSUM_HDR_REQ | 446 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 447 (QETH_HDR_EXT_CSUM_HDR_REQ | 448 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 449 skb->ip_summed = CHECKSUM_UNNECESSARY; 450 else 451 skb->ip_summed = CHECKSUM_NONE; 452 if (skb->protocol == htons(ETH_P_802_2)) 453 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 454 len = skb->len; 455 napi_gro_receive(&card->napi, skb); 456 break; 457 case QETH_HEADER_TYPE_OSN: 458 if (card->info.type == QETH_CARD_TYPE_OSN) { 459 skb_push(skb, sizeof(struct qeth_hdr)); 460 skb_copy_to_linear_data(skb, hdr, 461 sizeof(struct qeth_hdr)); 462 len = skb->len; 463 card->osn_info.data_cb(skb); 464 break; 465 } 466 /* else unknown */ 467 default: 468 dev_kfree_skb_any(skb); 469 QETH_CARD_TEXT(card, 3, "inbunkno"); 470 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 471 continue; 472 } 473 work_done++; 474 budget--; 475 card->stats.rx_packets++; 476 card->stats.rx_bytes += len; 477 } 478 return work_done; 479 } 480 481 static int qeth_l2_request_initial_mac(struct qeth_card *card) 482 { 483 int rc = 0; 484 char vendor_pre[] = {0x02, 0x00, 0x00}; 485 486 QETH_DBF_TEXT(SETUP, 2, "l2reqmac"); 487 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 488 489 if (MACHINE_IS_VM) { 490 rc = qeth_vm_request_mac(card); 491 if (!rc) 492 goto out; 493 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n", 494 CARD_BUS_ID(card), rc); 495 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc); 496 /* fall back to alternative mechanism: */ 497 } 498 499 if (card->info.type == QETH_CARD_TYPE_IQD || 500 card->info.type == QETH_CARD_TYPE_OSM || 501 card->info.type == QETH_CARD_TYPE_OSX || 502 card->info.guestlan) { 503 rc = qeth_setadpparms_change_macaddr(card); 504 if (rc) { 505 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 506 "device %s: x%x\n", CARD_BUS_ID(card), rc); 507 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 508 return rc; 509 } 510 } else { 511 eth_random_addr(card->dev->dev_addr); 512 memcpy(card->dev->dev_addr, vendor_pre, 3); 513 } 514 out: 515 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len); 516 return 0; 517 } 518 519 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 520 { 521 struct sockaddr *addr = p; 522 struct qeth_card *card = dev->ml_priv; 523 int rc = 0; 524 525 QETH_CARD_TEXT(card, 3, "setmac"); 526 527 if (card->info.type == QETH_CARD_TYPE_OSN || 528 card->info.type == QETH_CARD_TYPE_OSM || 529 card->info.type == QETH_CARD_TYPE_OSX) { 530 QETH_CARD_TEXT(card, 3, "setmcTYP"); 531 return -EOPNOTSUPP; 532 } 533 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 534 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 535 QETH_CARD_TEXT(card, 3, "setmcREC"); 536 return -ERESTARTSYS; 537 } 538 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 539 if (!rc || (rc == -ENOENT)) 540 rc = qeth_l2_send_setmac(card, addr->sa_data); 541 return rc ? -EINVAL : 0; 542 } 543 544 static void qeth_promisc_to_bridge(struct qeth_card *card) 545 { 546 struct net_device *dev = card->dev; 547 enum qeth_ipa_promisc_modes promisc_mode; 548 int role; 549 int rc; 550 551 QETH_CARD_TEXT(card, 3, "pmisc2br"); 552 553 if (!card->options.sbp.reflect_promisc) 554 return; 555 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 556 : SET_PROMISC_MODE_OFF; 557 if (promisc_mode == card->info.promisc_mode) 558 return; 559 560 if (promisc_mode == SET_PROMISC_MODE_ON) { 561 if (card->options.sbp.reflect_promisc_primary) 562 role = QETH_SBP_ROLE_PRIMARY; 563 else 564 role = QETH_SBP_ROLE_SECONDARY; 565 } else 566 role = QETH_SBP_ROLE_NONE; 567 568 rc = qeth_bridgeport_setrole(card, role); 569 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 570 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 571 if (!rc) { 572 card->options.sbp.role = role; 573 card->info.promisc_mode = promisc_mode; 574 } 575 576 } 577 /* New MAC address is added to the hash table and marked to be written on card 578 * only if there is not in the hash table storage already 579 * 580 */ 581 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 582 { 583 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 584 struct qeth_mac *mac; 585 586 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 587 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 588 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 589 return; 590 } 591 } 592 593 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 594 if (!mac) 595 return; 596 597 ether_addr_copy(mac->mac_addr, ha->addr); 598 mac->disp_flag = QETH_DISP_ADDR_ADD; 599 600 hash_add(card->mac_htable, &mac->hnode, mac_hash); 601 } 602 603 static void qeth_l2_set_rx_mode(struct net_device *dev) 604 { 605 struct qeth_card *card = dev->ml_priv; 606 struct netdev_hw_addr *ha; 607 struct qeth_mac *mac; 608 struct hlist_node *tmp; 609 int i; 610 int rc; 611 612 if (card->info.type == QETH_CARD_TYPE_OSN) 613 return; 614 615 QETH_CARD_TEXT(card, 3, "setmulti"); 616 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 617 (card->state != CARD_STATE_UP)) 618 return; 619 620 spin_lock_bh(&card->mclock); 621 622 netdev_for_each_mc_addr(ha, dev) 623 qeth_l2_add_mac(card, ha); 624 netdev_for_each_uc_addr(ha, dev) 625 qeth_l2_add_mac(card, ha); 626 627 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 628 switch (mac->disp_flag) { 629 case QETH_DISP_ADDR_DELETE: 630 qeth_l2_remove_mac(card, mac->mac_addr); 631 hash_del(&mac->hnode); 632 kfree(mac); 633 break; 634 case QETH_DISP_ADDR_ADD: 635 rc = qeth_l2_write_mac(card, mac->mac_addr); 636 if (rc) { 637 hash_del(&mac->hnode); 638 kfree(mac); 639 break; 640 } 641 /* fall through */ 642 default: 643 /* for next call to set_rx_mode(): */ 644 mac->disp_flag = QETH_DISP_ADDR_DELETE; 645 } 646 } 647 648 spin_unlock_bh(&card->mclock); 649 650 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 651 qeth_setadp_promisc_mode(card); 652 else 653 qeth_promisc_to_bridge(card); 654 } 655 656 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb, 657 struct qeth_qdio_out_q *queue, int cast_type) 658 { 659 unsigned int data_offset = ETH_HLEN; 660 struct qeth_hdr *hdr; 661 int rc; 662 663 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 664 if (!hdr) 665 return -ENOMEM; 666 qeth_l2_fill_header(hdr, skb, cast_type, skb->len); 667 skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr), 668 data_offset); 669 670 if (!qeth_get_elements_no(card, skb, 1, data_offset)) { 671 rc = -E2BIG; 672 goto out; 673 } 674 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, 675 sizeof(*hdr) + data_offset); 676 out: 677 if (rc) 678 kmem_cache_free(qeth_core_header_cache, hdr); 679 return rc; 680 } 681 682 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb, 683 struct qeth_qdio_out_q *queue, int cast_type) 684 { 685 int push_len = sizeof(struct qeth_hdr); 686 unsigned int elements, nr_frags; 687 unsigned int hdr_elements = 0; 688 struct qeth_hdr *hdr = NULL; 689 unsigned int hd_len = 0; 690 int rc; 691 692 /* fix hardware limitation: as long as we do not have sbal 693 * chaining we can not send long frag lists 694 */ 695 if (!qeth_get_elements_no(card, skb, 0, 0)) { 696 rc = skb_linearize(skb); 697 698 if (card->options.performance_stats) { 699 if (rc) 700 card->perf_stats.tx_linfail++; 701 else 702 card->perf_stats.tx_lin++; 703 } 704 if (rc) 705 return rc; 706 } 707 nr_frags = skb_shinfo(skb)->nr_frags; 708 709 rc = skb_cow_head(skb, push_len); 710 if (rc) 711 return rc; 712 push_len = qeth_push_hdr(skb, &hdr, push_len); 713 if (push_len < 0) 714 return push_len; 715 if (!push_len) { 716 /* hdr was allocated from cache */ 717 hd_len = sizeof(*hdr); 718 hdr_elements = 1; 719 } 720 qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len); 721 if (skb->ip_summed == CHECKSUM_PARTIAL) 722 qeth_l2_hdr_csum(card, hdr, skb); 723 724 elements = qeth_get_elements_no(card, skb, hdr_elements, 0); 725 if (!elements) { 726 rc = -E2BIG; 727 goto out; 728 } 729 elements += hdr_elements; 730 731 /* TODO: remove the skb_orphan() once TX completion is fast enough */ 732 skb_orphan(skb); 733 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements); 734 out: 735 if (!rc) { 736 if (card->options.performance_stats && nr_frags) { 737 card->perf_stats.sg_skbs_sent++; 738 /* nr_frags + skb->data */ 739 card->perf_stats.sg_frags_sent += nr_frags + 1; 740 } 741 } else { 742 if (hd_len) 743 kmem_cache_free(qeth_core_header_cache, hdr); 744 if (rc == -EBUSY) 745 /* roll back to ETH header */ 746 skb_pull(skb, push_len); 747 } 748 return rc; 749 } 750 751 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 752 struct qeth_qdio_out_q *queue) 753 { 754 unsigned int elements; 755 struct qeth_hdr *hdr; 756 757 if (skb->protocol == htons(ETH_P_IPV6)) 758 return -EPROTONOSUPPORT; 759 760 hdr = (struct qeth_hdr *)skb->data; 761 elements = qeth_get_elements_no(card, skb, 0, 0); 762 if (!elements) 763 return -E2BIG; 764 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr))) 765 return -EINVAL; 766 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements); 767 } 768 769 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 770 struct net_device *dev) 771 { 772 struct qeth_card *card = dev->ml_priv; 773 int cast_type = qeth_l2_get_cast_type(card, skb); 774 struct qeth_qdio_out_q *queue; 775 int tx_bytes = skb->len; 776 int rc; 777 778 if (card->qdio.do_prio_queueing || (cast_type && 779 card->info.is_multicast_different)) 780 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 781 qeth_get_ip_version(skb), cast_type)]; 782 else 783 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 784 785 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 786 card->stats.tx_carrier_errors++; 787 goto tx_drop; 788 } 789 790 if (card->options.performance_stats) { 791 card->perf_stats.outbound_cnt++; 792 card->perf_stats.outbound_start_time = qeth_get_micros(); 793 } 794 netif_stop_queue(dev); 795 796 switch (card->info.type) { 797 case QETH_CARD_TYPE_OSN: 798 rc = qeth_l2_xmit_osn(card, skb, queue); 799 break; 800 case QETH_CARD_TYPE_IQD: 801 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type); 802 break; 803 default: 804 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type); 805 } 806 807 if (!rc) { 808 card->stats.tx_packets++; 809 card->stats.tx_bytes += tx_bytes; 810 if (card->options.performance_stats) 811 card->perf_stats.outbound_time += qeth_get_micros() - 812 card->perf_stats.outbound_start_time; 813 netif_wake_queue(dev); 814 return NETDEV_TX_OK; 815 } else if (rc == -EBUSY) { 816 return NETDEV_TX_BUSY; 817 } /* else fall through */ 818 819 tx_drop: 820 card->stats.tx_dropped++; 821 card->stats.tx_errors++; 822 dev_kfree_skb_any(skb); 823 netif_wake_queue(dev); 824 return NETDEV_TX_OK; 825 } 826 827 static int __qeth_l2_open(struct net_device *dev) 828 { 829 struct qeth_card *card = dev->ml_priv; 830 int rc = 0; 831 832 QETH_CARD_TEXT(card, 4, "qethopen"); 833 if (card->state == CARD_STATE_UP) 834 return rc; 835 if (card->state != CARD_STATE_SOFTSETUP) 836 return -ENODEV; 837 838 if ((card->info.type != QETH_CARD_TYPE_OSN) && 839 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 840 QETH_CARD_TEXT(card, 4, "nomacadr"); 841 return -EPERM; 842 } 843 card->data.state = CH_STATE_UP; 844 card->state = CARD_STATE_UP; 845 netif_start_queue(dev); 846 847 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 848 napi_enable(&card->napi); 849 napi_schedule(&card->napi); 850 } else 851 rc = -EIO; 852 return rc; 853 } 854 855 static int qeth_l2_open(struct net_device *dev) 856 { 857 struct qeth_card *card = dev->ml_priv; 858 859 QETH_CARD_TEXT(card, 5, "qethope_"); 860 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 861 QETH_CARD_TEXT(card, 3, "openREC"); 862 return -ERESTARTSYS; 863 } 864 return __qeth_l2_open(dev); 865 } 866 867 static int qeth_l2_stop(struct net_device *dev) 868 { 869 struct qeth_card *card = dev->ml_priv; 870 871 QETH_CARD_TEXT(card, 4, "qethstop"); 872 netif_tx_disable(dev); 873 if (card->state == CARD_STATE_UP) { 874 card->state = CARD_STATE_SOFTSETUP; 875 napi_disable(&card->napi); 876 } 877 return 0; 878 } 879 880 static const struct device_type qeth_l2_devtype = { 881 .name = "qeth_layer2", 882 .groups = qeth_l2_attr_groups, 883 }; 884 885 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 886 { 887 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 888 int rc; 889 890 if (gdev->dev.type == &qeth_generic_devtype) { 891 rc = qeth_l2_create_device_attributes(&gdev->dev); 892 if (rc) 893 return rc; 894 } 895 INIT_LIST_HEAD(&card->vid_list); 896 hash_init(card->mac_htable); 897 card->options.layer2 = 1; 898 card->info.hwtrap = 0; 899 qeth_l2_vnicc_set_defaults(card); 900 return 0; 901 } 902 903 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 904 { 905 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 906 907 if (cgdev->dev.type == &qeth_generic_devtype) 908 qeth_l2_remove_device_attributes(&cgdev->dev); 909 qeth_set_allowed_threads(card, 0, 1); 910 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 911 912 if (cgdev->state == CCWGROUP_ONLINE) 913 qeth_l2_set_offline(cgdev); 914 915 if (card->dev) { 916 unregister_netdev(card->dev); 917 free_netdev(card->dev); 918 card->dev = NULL; 919 } 920 return; 921 } 922 923 static const struct ethtool_ops qeth_l2_ethtool_ops = { 924 .get_link = ethtool_op_get_link, 925 .get_strings = qeth_core_get_strings, 926 .get_ethtool_stats = qeth_core_get_ethtool_stats, 927 .get_sset_count = qeth_core_get_sset_count, 928 .get_drvinfo = qeth_core_get_drvinfo, 929 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 930 }; 931 932 static const struct ethtool_ops qeth_l2_osn_ops = { 933 .get_strings = qeth_core_get_strings, 934 .get_ethtool_stats = qeth_core_get_ethtool_stats, 935 .get_sset_count = qeth_core_get_sset_count, 936 .get_drvinfo = qeth_core_get_drvinfo, 937 }; 938 939 static const struct net_device_ops qeth_l2_netdev_ops = { 940 .ndo_open = qeth_l2_open, 941 .ndo_stop = qeth_l2_stop, 942 .ndo_get_stats = qeth_get_stats, 943 .ndo_start_xmit = qeth_l2_hard_start_xmit, 944 .ndo_features_check = qeth_features_check, 945 .ndo_validate_addr = eth_validate_addr, 946 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 947 .ndo_do_ioctl = qeth_do_ioctl, 948 .ndo_set_mac_address = qeth_l2_set_mac_address, 949 .ndo_change_mtu = qeth_change_mtu, 950 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 951 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 952 .ndo_tx_timeout = qeth_tx_timeout, 953 .ndo_fix_features = qeth_fix_features, 954 .ndo_set_features = qeth_set_features 955 }; 956 957 static int qeth_l2_setup_netdev(struct qeth_card *card) 958 { 959 switch (card->info.type) { 960 case QETH_CARD_TYPE_IQD: 961 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 962 ether_setup); 963 break; 964 case QETH_CARD_TYPE_OSN: 965 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 966 ether_setup); 967 break; 968 default: 969 card->dev = alloc_etherdev(0); 970 } 971 972 if (!card->dev) 973 return -ENODEV; 974 975 card->dev->ml_priv = card; 976 card->dev->priv_flags |= IFF_UNICAST_FLT; 977 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 978 card->dev->mtu = card->info.initial_mtu; 979 card->dev->min_mtu = 64; 980 card->dev->max_mtu = ETH_MAX_MTU; 981 card->dev->netdev_ops = &qeth_l2_netdev_ops; 982 if (card->info.type == QETH_CARD_TYPE_OSN) { 983 card->dev->ethtool_ops = &qeth_l2_osn_ops; 984 card->dev->flags |= IFF_NOARP; 985 } else { 986 card->dev->ethtool_ops = &qeth_l2_ethtool_ops; 987 } 988 989 if (card->info.type == QETH_CARD_TYPE_OSM) 990 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 991 else 992 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 993 994 if (card->info.type != QETH_CARD_TYPE_OSN && 995 card->info.type != QETH_CARD_TYPE_IQD) { 996 card->dev->priv_flags &= ~IFF_TX_SKB_SHARING; 997 card->dev->needed_headroom = sizeof(struct qeth_hdr); 998 card->dev->hw_features |= NETIF_F_SG; 999 card->dev->vlan_features |= NETIF_F_SG; 1000 } 1001 1002 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 1003 card->dev->features |= NETIF_F_SG; 1004 /* OSA 3S and earlier has no RX/TX support */ 1005 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 1006 card->dev->hw_features |= NETIF_F_IP_CSUM; 1007 card->dev->vlan_features |= NETIF_F_IP_CSUM; 1008 } 1009 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 1010 card->dev->hw_features |= NETIF_F_RXCSUM; 1011 card->dev->vlan_features |= NETIF_F_RXCSUM; 1012 } 1013 } 1014 1015 card->info.broadcast_capable = 1; 1016 qeth_l2_request_initial_mac(card); 1017 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1018 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 1019 netif_carrier_off(card->dev); 1020 return register_netdev(card->dev); 1021 } 1022 1023 static int qeth_l2_start_ipassists(struct qeth_card *card) 1024 { 1025 /* configure isolation level */ 1026 if (qeth_set_access_ctrl_online(card, 0)) 1027 return -ENODEV; 1028 return 0; 1029 } 1030 1031 static void qeth_l2_trace_features(struct qeth_card *card) 1032 { 1033 /* Set BridgePort features */ 1034 QETH_CARD_TEXT(card, 2, "featuSBP"); 1035 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 1036 sizeof(card->options.sbp.supported_funcs)); 1037 /* VNIC Characteristics features */ 1038 QETH_CARD_TEXT(card, 2, "feaVNICC"); 1039 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 1040 sizeof(card->options.vnicc.sup_chars)); 1041 } 1042 1043 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1044 { 1045 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1046 int rc = 0; 1047 enum qeth_card_states recover_flag; 1048 1049 mutex_lock(&card->discipline_mutex); 1050 mutex_lock(&card->conf_mutex); 1051 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1052 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1053 1054 recover_flag = card->state; 1055 rc = qeth_core_hardsetup_card(card); 1056 if (rc) { 1057 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1058 rc = -ENODEV; 1059 goto out_remove; 1060 } 1061 qeth_bridgeport_query_support(card); 1062 if (card->options.sbp.supported_funcs) 1063 dev_info(&card->gdev->dev, 1064 "The device represents a Bridge Capable Port\n"); 1065 1066 if (!card->dev && qeth_l2_setup_netdev(card)) { 1067 rc = -ENODEV; 1068 goto out_remove; 1069 } 1070 1071 if (card->info.type != QETH_CARD_TYPE_OSN) 1072 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1073 1074 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1075 if (card->info.hwtrap && 1076 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1077 card->info.hwtrap = 0; 1078 } else 1079 card->info.hwtrap = 0; 1080 1081 /* for the rx_bcast characteristic, init VNICC after setmac */ 1082 qeth_l2_vnicc_init(card); 1083 1084 qeth_trace_features(card); 1085 qeth_l2_trace_features(card); 1086 1087 qeth_l2_setup_bridgeport_attrs(card); 1088 1089 card->state = CARD_STATE_HARDSETUP; 1090 qeth_print_status_message(card); 1091 1092 /* softsetup */ 1093 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1094 1095 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1096 (card->info.type == QETH_CARD_TYPE_OSX)) { 1097 rc = qeth_l2_start_ipassists(card); 1098 if (rc) 1099 goto out_remove; 1100 } 1101 1102 if (card->info.type != QETH_CARD_TYPE_OSN) 1103 qeth_l2_process_vlans(card); 1104 1105 netif_tx_disable(card->dev); 1106 1107 rc = qeth_init_qdio_queues(card); 1108 if (rc) { 1109 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1110 rc = -ENODEV; 1111 goto out_remove; 1112 } 1113 card->state = CARD_STATE_SOFTSETUP; 1114 if (card->lan_online) 1115 netif_carrier_on(card->dev); 1116 else 1117 netif_carrier_off(card->dev); 1118 1119 qeth_set_allowed_threads(card, 0xffffffff, 0); 1120 if (recover_flag == CARD_STATE_RECOVER) { 1121 if (recovery_mode && 1122 card->info.type != QETH_CARD_TYPE_OSN) { 1123 __qeth_l2_open(card->dev); 1124 } else { 1125 rtnl_lock(); 1126 dev_open(card->dev); 1127 rtnl_unlock(); 1128 } 1129 /* this also sets saved unicast addresses */ 1130 qeth_l2_set_rx_mode(card->dev); 1131 rtnl_lock(); 1132 qeth_recover_features(card->dev); 1133 rtnl_unlock(); 1134 } 1135 /* let user_space know that device is online */ 1136 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1137 mutex_unlock(&card->conf_mutex); 1138 mutex_unlock(&card->discipline_mutex); 1139 return 0; 1140 1141 out_remove: 1142 qeth_l2_stop_card(card, 0); 1143 ccw_device_set_offline(CARD_DDEV(card)); 1144 ccw_device_set_offline(CARD_WDEV(card)); 1145 ccw_device_set_offline(CARD_RDEV(card)); 1146 qdio_free(CARD_DDEV(card)); 1147 if (recover_flag == CARD_STATE_RECOVER) 1148 card->state = CARD_STATE_RECOVER; 1149 else 1150 card->state = CARD_STATE_DOWN; 1151 mutex_unlock(&card->conf_mutex); 1152 mutex_unlock(&card->discipline_mutex); 1153 return rc; 1154 } 1155 1156 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1157 { 1158 return __qeth_l2_set_online(gdev, 0); 1159 } 1160 1161 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1162 int recovery_mode) 1163 { 1164 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1165 int rc = 0, rc2 = 0, rc3 = 0; 1166 enum qeth_card_states recover_flag; 1167 1168 mutex_lock(&card->discipline_mutex); 1169 mutex_lock(&card->conf_mutex); 1170 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1171 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1172 1173 if (card->dev && netif_carrier_ok(card->dev)) 1174 netif_carrier_off(card->dev); 1175 recover_flag = card->state; 1176 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1177 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1178 card->info.hwtrap = 1; 1179 } 1180 qeth_l2_stop_card(card, recovery_mode); 1181 rc = ccw_device_set_offline(CARD_DDEV(card)); 1182 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1183 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1184 if (!rc) 1185 rc = (rc2) ? rc2 : rc3; 1186 if (rc) 1187 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1188 qdio_free(CARD_DDEV(card)); 1189 if (recover_flag == CARD_STATE_UP) 1190 card->state = CARD_STATE_RECOVER; 1191 /* let user_space know that device is offline */ 1192 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1193 mutex_unlock(&card->conf_mutex); 1194 mutex_unlock(&card->discipline_mutex); 1195 return 0; 1196 } 1197 1198 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1199 { 1200 return __qeth_l2_set_offline(cgdev, 0); 1201 } 1202 1203 static int qeth_l2_recover(void *ptr) 1204 { 1205 struct qeth_card *card; 1206 int rc = 0; 1207 1208 card = (struct qeth_card *) ptr; 1209 QETH_CARD_TEXT(card, 2, "recover1"); 1210 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1211 return 0; 1212 QETH_CARD_TEXT(card, 2, "recover2"); 1213 dev_warn(&card->gdev->dev, 1214 "A recovery process has been started for the device\n"); 1215 qeth_set_recovery_task(card); 1216 __qeth_l2_set_offline(card->gdev, 1); 1217 rc = __qeth_l2_set_online(card->gdev, 1); 1218 if (!rc) 1219 dev_info(&card->gdev->dev, 1220 "Device successfully recovered!\n"); 1221 else { 1222 qeth_close_dev(card); 1223 dev_warn(&card->gdev->dev, "The qeth device driver " 1224 "failed to recover an error on the device\n"); 1225 } 1226 qeth_clear_recovery_task(card); 1227 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1228 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1229 return 0; 1230 } 1231 1232 static int __init qeth_l2_init(void) 1233 { 1234 pr_info("register layer 2 discipline\n"); 1235 return 0; 1236 } 1237 1238 static void __exit qeth_l2_exit(void) 1239 { 1240 pr_info("unregister layer 2 discipline\n"); 1241 } 1242 1243 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1244 { 1245 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1246 1247 if (card->dev) 1248 netif_device_detach(card->dev); 1249 qeth_set_allowed_threads(card, 0, 1); 1250 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1251 if (gdev->state == CCWGROUP_OFFLINE) 1252 return 0; 1253 if (card->state == CARD_STATE_UP) { 1254 if (card->info.hwtrap) 1255 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1256 __qeth_l2_set_offline(card->gdev, 1); 1257 } else 1258 __qeth_l2_set_offline(card->gdev, 0); 1259 return 0; 1260 } 1261 1262 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1263 { 1264 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1265 int rc = 0; 1266 1267 if (gdev->state == CCWGROUP_OFFLINE) 1268 goto out; 1269 1270 if (card->state == CARD_STATE_RECOVER) { 1271 rc = __qeth_l2_set_online(card->gdev, 1); 1272 if (rc) { 1273 rtnl_lock(); 1274 dev_close(card->dev); 1275 rtnl_unlock(); 1276 } 1277 } else 1278 rc = __qeth_l2_set_online(card->gdev, 0); 1279 out: 1280 qeth_set_allowed_threads(card, 0xffffffff, 0); 1281 if (card->dev) 1282 netif_device_attach(card->dev); 1283 if (rc) 1284 dev_warn(&card->gdev->dev, "The qeth device driver " 1285 "failed to recover an error on the device\n"); 1286 return rc; 1287 } 1288 1289 /* Returns zero if the command is successfully "consumed" */ 1290 static int qeth_l2_control_event(struct qeth_card *card, 1291 struct qeth_ipa_cmd *cmd) 1292 { 1293 switch (cmd->hdr.command) { 1294 case IPA_CMD_SETBRIDGEPORT_OSA: 1295 case IPA_CMD_SETBRIDGEPORT_IQD: 1296 if (cmd->data.sbp.hdr.command_code == 1297 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1298 qeth_bridge_state_change(card, cmd); 1299 return 0; 1300 } else 1301 return 1; 1302 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1303 qeth_bridge_host_event(card, cmd); 1304 return 0; 1305 default: 1306 return 1; 1307 } 1308 } 1309 1310 struct qeth_discipline qeth_l2_discipline = { 1311 .devtype = &qeth_l2_devtype, 1312 .start_poll = qeth_qdio_start_poll, 1313 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1314 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1315 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1316 .recover = qeth_l2_recover, 1317 .setup = qeth_l2_probe_device, 1318 .remove = qeth_l2_remove_device, 1319 .set_online = qeth_l2_set_online, 1320 .set_offline = qeth_l2_set_offline, 1321 .freeze = qeth_l2_pm_suspend, 1322 .thaw = qeth_l2_pm_resume, 1323 .restore = qeth_l2_pm_resume, 1324 .do_ioctl = NULL, 1325 .control_event_handler = qeth_l2_control_event, 1326 }; 1327 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1328 1329 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1330 struct qeth_cmd_buffer *iob) 1331 { 1332 unsigned long flags; 1333 int rc = 0; 1334 1335 QETH_CARD_TEXT(card, 5, "osndctrd"); 1336 1337 wait_event(card->wait_q, 1338 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1339 qeth_prepare_control_data(card, len, iob); 1340 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1341 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1342 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1343 (addr_t) iob, 0, 0); 1344 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1345 if (rc) { 1346 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1347 "ccw_device_start rc = %i\n", rc); 1348 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1349 qeth_release_buffer(iob->channel, iob); 1350 atomic_set(&card->write.irq_pending, 0); 1351 wake_up(&card->wait_q); 1352 } 1353 return rc; 1354 } 1355 1356 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1357 struct qeth_cmd_buffer *iob, int data_len) 1358 { 1359 u16 s1, s2; 1360 1361 QETH_CARD_TEXT(card, 4, "osndipa"); 1362 1363 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1364 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1365 s2 = (u16)data_len; 1366 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1367 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1368 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1369 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1370 return qeth_osn_send_control_data(card, s1, iob); 1371 } 1372 1373 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1374 { 1375 struct qeth_cmd_buffer *iob; 1376 struct qeth_card *card; 1377 1378 if (!dev) 1379 return -ENODEV; 1380 card = dev->ml_priv; 1381 if (!card) 1382 return -ENODEV; 1383 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1384 if (!qeth_card_hw_is_reachable(card)) 1385 return -ENODEV; 1386 iob = qeth_wait_for_buffer(&card->write); 1387 memcpy(__ipa_cmd(iob), data, data_len); 1388 return qeth_osn_send_ipa_cmd(card, iob, data_len); 1389 } 1390 EXPORT_SYMBOL(qeth_osn_assist); 1391 1392 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1393 int (*assist_cb)(struct net_device *, void *), 1394 int (*data_cb)(struct sk_buff *)) 1395 { 1396 struct qeth_card *card; 1397 1398 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1399 if (*dev == NULL) 1400 return -ENODEV; 1401 card = (*dev)->ml_priv; 1402 if (!card) 1403 return -ENODEV; 1404 QETH_CARD_TEXT(card, 2, "osnreg"); 1405 if ((assist_cb == NULL) || (data_cb == NULL)) 1406 return -EINVAL; 1407 card->osn_info.assist_cb = assist_cb; 1408 card->osn_info.data_cb = data_cb; 1409 return 0; 1410 } 1411 EXPORT_SYMBOL(qeth_osn_register); 1412 1413 void qeth_osn_deregister(struct net_device *dev) 1414 { 1415 struct qeth_card *card; 1416 1417 if (!dev) 1418 return; 1419 card = dev->ml_priv; 1420 if (!card) 1421 return; 1422 QETH_CARD_TEXT(card, 2, "osndereg"); 1423 card->osn_info.assist_cb = NULL; 1424 card->osn_info.data_cb = NULL; 1425 return; 1426 } 1427 EXPORT_SYMBOL(qeth_osn_deregister); 1428 1429 /* SETBRIDGEPORT support, async notifications */ 1430 1431 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1432 1433 /** 1434 * qeth_bridge_emit_host_event() - bridgeport address change notification 1435 * @card: qeth_card structure pointer, for udev events. 1436 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1437 * and reset token and addr_lnid are unused and may be NULL. 1438 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1439 * object, 0 - addition of an object. 1440 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1441 * @token: "network token" structure identifying physical address of the port. 1442 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1443 * 1444 * This function is called when registrations and deregistrations are 1445 * reported by the hardware, and also when notifications are enabled - 1446 * for all currently registered addresses. 1447 */ 1448 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1449 enum qeth_an_event_type evtype, 1450 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1451 { 1452 char str[7][32]; 1453 char *env[8]; 1454 int i = 0; 1455 1456 switch (evtype) { 1457 case anev_reg_unreg: 1458 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1459 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1460 ? "deregister" : "register"); 1461 env[i] = str[i]; i++; 1462 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1463 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1464 addr_lnid->lnid); 1465 env[i] = str[i]; i++; 1466 } 1467 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1468 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1469 addr_lnid->mac); 1470 env[i] = str[i]; i++; 1471 } 1472 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1473 token->cssid, token->ssid, token->devnum); 1474 env[i] = str[i]; i++; 1475 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1476 env[i] = str[i]; i++; 1477 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1478 token->chpid); 1479 env[i] = str[i]; i++; 1480 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1481 env[i] = str[i]; i++; 1482 break; 1483 case anev_abort: 1484 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1485 env[i] = str[i]; i++; 1486 break; 1487 case anev_reset: 1488 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1489 env[i] = str[i]; i++; 1490 break; 1491 } 1492 env[i] = NULL; 1493 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1494 } 1495 1496 struct qeth_bridge_state_data { 1497 struct work_struct worker; 1498 struct qeth_card *card; 1499 struct qeth_sbp_state_change qports; 1500 }; 1501 1502 static void qeth_bridge_state_change_worker(struct work_struct *work) 1503 { 1504 struct qeth_bridge_state_data *data = 1505 container_of(work, struct qeth_bridge_state_data, worker); 1506 /* We are only interested in the first entry - local port */ 1507 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1508 char env_locrem[32]; 1509 char env_role[32]; 1510 char env_state[32]; 1511 char *env[] = { 1512 env_locrem, 1513 env_role, 1514 env_state, 1515 NULL 1516 }; 1517 1518 /* Role should not change by itself, but if it did, */ 1519 /* information from the hardware is authoritative. */ 1520 mutex_lock(&data->card->conf_mutex); 1521 data->card->options.sbp.role = entry->role; 1522 mutex_unlock(&data->card->conf_mutex); 1523 1524 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1525 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1526 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1527 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1528 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1529 "<INVALID>"); 1530 snprintf(env_state, sizeof(env_state), "STATE=%s", 1531 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1532 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1533 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1534 "<INVALID>"); 1535 kobject_uevent_env(&data->card->gdev->dev.kobj, 1536 KOBJ_CHANGE, env); 1537 kfree(data); 1538 } 1539 1540 static void qeth_bridge_state_change(struct qeth_card *card, 1541 struct qeth_ipa_cmd *cmd) 1542 { 1543 struct qeth_sbp_state_change *qports = 1544 &cmd->data.sbp.data.state_change; 1545 struct qeth_bridge_state_data *data; 1546 int extrasize; 1547 1548 QETH_CARD_TEXT(card, 2, "brstchng"); 1549 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1550 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1551 return; 1552 } 1553 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1554 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1555 GFP_ATOMIC); 1556 if (!data) { 1557 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1558 return; 1559 } 1560 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1561 data->card = card; 1562 memcpy(&data->qports, qports, 1563 sizeof(struct qeth_sbp_state_change) + extrasize); 1564 queue_work(qeth_wq, &data->worker); 1565 } 1566 1567 struct qeth_bridge_host_data { 1568 struct work_struct worker; 1569 struct qeth_card *card; 1570 struct qeth_ipacmd_addr_change hostevs; 1571 }; 1572 1573 static void qeth_bridge_host_event_worker(struct work_struct *work) 1574 { 1575 struct qeth_bridge_host_data *data = 1576 container_of(work, struct qeth_bridge_host_data, worker); 1577 int i; 1578 1579 if (data->hostevs.lost_event_mask) { 1580 dev_info(&data->card->gdev->dev, 1581 "Address notification from the Bridge Port stopped %s (%s)\n", 1582 data->card->dev->name, 1583 (data->hostevs.lost_event_mask == 0x01) 1584 ? "Overflow" 1585 : (data->hostevs.lost_event_mask == 0x02) 1586 ? "Bridge port state change" 1587 : "Unknown reason"); 1588 mutex_lock(&data->card->conf_mutex); 1589 data->card->options.sbp.hostnotification = 0; 1590 mutex_unlock(&data->card->conf_mutex); 1591 qeth_bridge_emit_host_event(data->card, anev_abort, 1592 0, NULL, NULL); 1593 } else 1594 for (i = 0; i < data->hostevs.num_entries; i++) { 1595 struct qeth_ipacmd_addr_change_entry *entry = 1596 &data->hostevs.entry[i]; 1597 qeth_bridge_emit_host_event(data->card, 1598 anev_reg_unreg, 1599 entry->change_code, 1600 &entry->token, &entry->addr_lnid); 1601 } 1602 kfree(data); 1603 } 1604 1605 static void qeth_bridge_host_event(struct qeth_card *card, 1606 struct qeth_ipa_cmd *cmd) 1607 { 1608 struct qeth_ipacmd_addr_change *hostevs = 1609 &cmd->data.addrchange; 1610 struct qeth_bridge_host_data *data; 1611 int extrasize; 1612 1613 QETH_CARD_TEXT(card, 2, "brhostev"); 1614 if (cmd->hdr.return_code != 0x0000) { 1615 if (cmd->hdr.return_code == 0x0010) { 1616 if (hostevs->lost_event_mask == 0x00) 1617 hostevs->lost_event_mask = 0xff; 1618 } else { 1619 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1620 cmd->hdr.return_code); 1621 return; 1622 } 1623 } 1624 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1625 hostevs->num_entries; 1626 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1627 GFP_ATOMIC); 1628 if (!data) { 1629 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1630 return; 1631 } 1632 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1633 data->card = card; 1634 memcpy(&data->hostevs, hostevs, 1635 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1636 queue_work(qeth_wq, &data->worker); 1637 } 1638 1639 /* SETBRIDGEPORT support; sending commands */ 1640 1641 struct _qeth_sbp_cbctl { 1642 u16 ipa_rc; 1643 u16 cmd_rc; 1644 union { 1645 u32 supported; 1646 struct { 1647 enum qeth_sbp_roles *role; 1648 enum qeth_sbp_states *state; 1649 } qports; 1650 } data; 1651 }; 1652 1653 /** 1654 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1655 * @card: qeth_card structure pointer, for debug messages. 1656 * @cbctl: state structure with hardware return codes. 1657 * @setcmd: IPA command code 1658 * 1659 * Returns negative errno-compatible error indication or 0 on success. 1660 */ 1661 static int qeth_bridgeport_makerc(struct qeth_card *card, 1662 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1663 { 1664 int rc; 1665 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1666 1667 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1668 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1669 switch (cbctl->cmd_rc) { 1670 case IPA_RC_SUCCESS: 1671 rc = 0; 1672 break; 1673 case IPA_RC_L2_UNSUPPORTED_CMD: 1674 case IPA_RC_UNSUPPORTED_COMMAND: 1675 rc = -EOPNOTSUPP; 1676 break; 1677 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1678 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1679 rc = -ENODEV; /* maybe not the best code here? */ 1680 dev_err(&card->gdev->dev, 1681 "The device is not configured as a Bridge Port\n"); 1682 break; 1683 case IPA_RC_SBP_OSA_OS_MISMATCH: 1684 case IPA_RC_SBP_IQD_OS_MISMATCH: 1685 rc = -EPERM; 1686 dev_err(&card->gdev->dev, 1687 "A Bridge Port is already configured by a different operating system\n"); 1688 break; 1689 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1690 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1691 switch (setcmd) { 1692 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1693 rc = -EEXIST; 1694 dev_err(&card->gdev->dev, 1695 "The LAN already has a primary Bridge Port\n"); 1696 break; 1697 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1698 rc = -EBUSY; 1699 dev_err(&card->gdev->dev, 1700 "The device is already a primary Bridge Port\n"); 1701 break; 1702 default: 1703 rc = -EIO; 1704 } 1705 break; 1706 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1707 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1708 rc = -EBUSY; 1709 dev_err(&card->gdev->dev, 1710 "The device is already a secondary Bridge Port\n"); 1711 break; 1712 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1713 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1714 rc = -EEXIST; 1715 dev_err(&card->gdev->dev, 1716 "The LAN cannot have more secondary Bridge Ports\n"); 1717 break; 1718 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1719 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1720 rc = -EBUSY; 1721 dev_err(&card->gdev->dev, 1722 "The device is already a primary Bridge Port\n"); 1723 break; 1724 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1725 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1726 rc = -EACCES; 1727 dev_err(&card->gdev->dev, 1728 "The device is not authorized to be a Bridge Port\n"); 1729 break; 1730 default: 1731 rc = -EIO; 1732 } 1733 else 1734 switch (cbctl->ipa_rc) { 1735 case IPA_RC_NOTSUPP: 1736 rc = -EOPNOTSUPP; 1737 break; 1738 case IPA_RC_UNSUPPORTED_COMMAND: 1739 rc = -EOPNOTSUPP; 1740 break; 1741 default: 1742 rc = -EIO; 1743 } 1744 1745 if (rc) { 1746 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1747 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1748 } 1749 return rc; 1750 } 1751 1752 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1753 enum qeth_ipa_sbp_cmd sbp_cmd, 1754 unsigned int cmd_length) 1755 { 1756 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ? 1757 IPA_CMD_SETBRIDGEPORT_IQD : 1758 IPA_CMD_SETBRIDGEPORT_OSA; 1759 struct qeth_cmd_buffer *iob; 1760 struct qeth_ipa_cmd *cmd; 1761 1762 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0); 1763 if (!iob) 1764 return iob; 1765 cmd = __ipa_cmd(iob); 1766 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1767 cmd_length; 1768 cmd->data.sbp.hdr.command_code = sbp_cmd; 1769 cmd->data.sbp.hdr.used_total = 1; 1770 cmd->data.sbp.hdr.seq_no = 1; 1771 return iob; 1772 } 1773 1774 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1775 struct qeth_reply *reply, unsigned long data) 1776 { 1777 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1778 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1779 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1780 cbctl->ipa_rc = cmd->hdr.return_code; 1781 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1782 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1783 cbctl->data.supported = 1784 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1785 } else { 1786 cbctl->data.supported = 0; 1787 } 1788 return 0; 1789 } 1790 1791 /** 1792 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1793 * @card: qeth_card structure pointer. 1794 * 1795 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1796 * strucutre: card->options.sbp.supported_funcs. 1797 */ 1798 static void qeth_bridgeport_query_support(struct qeth_card *card) 1799 { 1800 struct qeth_cmd_buffer *iob; 1801 struct _qeth_sbp_cbctl cbctl; 1802 1803 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1804 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1805 sizeof(struct qeth_sbp_query_cmds_supp)); 1806 if (!iob) 1807 return; 1808 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1809 (void *)&cbctl) || 1810 qeth_bridgeport_makerc(card, &cbctl, 1811 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1812 /* non-zero makerc signifies failure, and produce messages */ 1813 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1814 return; 1815 } 1816 card->options.sbp.supported_funcs = cbctl.data.supported; 1817 } 1818 1819 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1820 struct qeth_reply *reply, unsigned long data) 1821 { 1822 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1823 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1824 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1825 1826 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1827 cbctl->ipa_rc = cmd->hdr.return_code; 1828 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1829 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1830 return 0; 1831 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1832 cbctl->cmd_rc = 0xffff; 1833 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1834 return 0; 1835 } 1836 /* first entry contains the state of the local port */ 1837 if (qports->num_entries > 0) { 1838 if (cbctl->data.qports.role) 1839 *cbctl->data.qports.role = qports->entry[0].role; 1840 if (cbctl->data.qports.state) 1841 *cbctl->data.qports.state = qports->entry[0].state; 1842 } 1843 return 0; 1844 } 1845 1846 /** 1847 * qeth_bridgeport_query_ports() - query local bridgeport status. 1848 * @card: qeth_card structure pointer. 1849 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1850 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1851 * 1852 * Returns negative errno-compatible error indication or 0 on success. 1853 * 1854 * 'role' and 'state' are not updated in case of hardware operation failure. 1855 */ 1856 int qeth_bridgeport_query_ports(struct qeth_card *card, 1857 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1858 { 1859 int rc = 0; 1860 struct qeth_cmd_buffer *iob; 1861 struct _qeth_sbp_cbctl cbctl = { 1862 .data = { 1863 .qports = { 1864 .role = role, 1865 .state = state, 1866 }, 1867 }, 1868 }; 1869 1870 QETH_CARD_TEXT(card, 2, "brqports"); 1871 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1872 return -EOPNOTSUPP; 1873 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1874 if (!iob) 1875 return -ENOMEM; 1876 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1877 (void *)&cbctl); 1878 if (rc < 0) 1879 return rc; 1880 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1881 } 1882 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1883 1884 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1885 struct qeth_reply *reply, unsigned long data) 1886 { 1887 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1888 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1889 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1890 cbctl->ipa_rc = cmd->hdr.return_code; 1891 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1892 return 0; 1893 } 1894 1895 /** 1896 * qeth_bridgeport_setrole() - Assign primary role to the port. 1897 * @card: qeth_card structure pointer. 1898 * @role: Role to assign. 1899 * 1900 * Returns negative errno-compatible error indication or 0 on success. 1901 */ 1902 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1903 { 1904 int rc = 0; 1905 int cmdlength; 1906 struct qeth_cmd_buffer *iob; 1907 struct _qeth_sbp_cbctl cbctl; 1908 enum qeth_ipa_sbp_cmd setcmd; 1909 1910 QETH_CARD_TEXT(card, 2, "brsetrol"); 1911 switch (role) { 1912 case QETH_SBP_ROLE_NONE: 1913 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1914 cmdlength = sizeof(struct qeth_sbp_reset_role); 1915 break; 1916 case QETH_SBP_ROLE_PRIMARY: 1917 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1918 cmdlength = sizeof(struct qeth_sbp_set_primary); 1919 break; 1920 case QETH_SBP_ROLE_SECONDARY: 1921 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1922 cmdlength = sizeof(struct qeth_sbp_set_secondary); 1923 break; 1924 default: 1925 return -EINVAL; 1926 } 1927 if (!(card->options.sbp.supported_funcs & setcmd)) 1928 return -EOPNOTSUPP; 1929 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1930 if (!iob) 1931 return -ENOMEM; 1932 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 1933 (void *)&cbctl); 1934 if (rc < 0) 1935 return rc; 1936 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 1937 } 1938 1939 /** 1940 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1941 * @card: qeth_card structure pointer, for debug messages. 1942 * 1943 * Returns negative errno-compatible error indication or 0 on success. 1944 */ 1945 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1946 { 1947 int rc; 1948 1949 if (pnso_rc == 0) 1950 switch (response) { 1951 case 0x0001: 1952 rc = 0; 1953 break; 1954 case 0x0004: 1955 case 0x0100: 1956 case 0x0106: 1957 rc = -EOPNOTSUPP; 1958 dev_err(&card->gdev->dev, 1959 "Setting address notification failed\n"); 1960 break; 1961 case 0x0107: 1962 rc = -EAGAIN; 1963 break; 1964 default: 1965 rc = -EIO; 1966 } 1967 else 1968 rc = -EIO; 1969 1970 if (rc) { 1971 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1972 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1973 } 1974 return rc; 1975 } 1976 1977 static void qeth_bridgeport_an_set_cb(void *priv, 1978 enum qdio_brinfo_entry_type type, void *entry) 1979 { 1980 struct qeth_card *card = (struct qeth_card *)priv; 1981 struct qdio_brinfo_entry_l2 *l2entry; 1982 u8 code; 1983 1984 if (type != l2_addr_lnid) { 1985 WARN_ON_ONCE(1); 1986 return; 1987 } 1988 1989 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1990 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1991 if (l2entry->addr_lnid.lnid) 1992 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1993 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1994 (struct net_if_token *)&l2entry->nit, 1995 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1996 } 1997 1998 /** 1999 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 2000 * @card: qeth_card structure pointer. 2001 * @enable: 0 - disable, non-zero - enable notifications 2002 * 2003 * Returns negative errno-compatible error indication or 0 on success. 2004 * 2005 * On enable, emits a series of address notifications udev events for all 2006 * currently registered hosts. 2007 */ 2008 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2009 { 2010 int rc; 2011 u16 response; 2012 struct ccw_device *ddev; 2013 struct subchannel_id schid; 2014 2015 if (!card) 2016 return -EINVAL; 2017 if (!card->options.sbp.supported_funcs) 2018 return -EOPNOTSUPP; 2019 ddev = CARD_DDEV(card); 2020 ccw_device_get_schid(ddev, &schid); 2021 2022 if (enable) { 2023 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2024 rc = qdio_pnso_brinfo(schid, 1, &response, 2025 qeth_bridgeport_an_set_cb, card); 2026 } else 2027 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2028 return qeth_anset_makerc(card, rc, response); 2029 } 2030 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2031 2032 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 2033 { 2034 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 2035 card->options.sbp.hostnotification); 2036 } 2037 2038 /* VNIC Characteristics support */ 2039 2040 /* handle VNICC IPA command return codes; convert to error codes */ 2041 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc) 2042 { 2043 int rc; 2044 2045 switch (ipa_rc) { 2046 case IPA_RC_SUCCESS: 2047 return ipa_rc; 2048 case IPA_RC_L2_UNSUPPORTED_CMD: 2049 case IPA_RC_NOTSUPP: 2050 rc = -EOPNOTSUPP; 2051 break; 2052 case IPA_RC_VNICC_OOSEQ: 2053 rc = -EALREADY; 2054 break; 2055 case IPA_RC_VNICC_VNICBP: 2056 rc = -EBUSY; 2057 break; 2058 case IPA_RC_L2_ADDR_TABLE_FULL: 2059 rc = -ENOSPC; 2060 break; 2061 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 2062 rc = -EACCES; 2063 break; 2064 default: 2065 rc = -EIO; 2066 } 2067 2068 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 2069 return rc; 2070 } 2071 2072 /* generic VNICC request call back control */ 2073 struct _qeth_l2_vnicc_request_cbctl { 2074 u32 sub_cmd; 2075 struct { 2076 u32 vnic_char; 2077 u32 timeout; 2078 } param; 2079 struct { 2080 union{ 2081 u32 *sup_cmds; 2082 u32 *timeout; 2083 }; 2084 } result; 2085 }; 2086 2087 /* generic VNICC request call back */ 2088 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 2089 struct qeth_reply *reply, 2090 unsigned long data) 2091 { 2092 struct _qeth_l2_vnicc_request_cbctl *cbctl = 2093 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 2094 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2095 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 2096 2097 QETH_CARD_TEXT(card, 2, "vniccrcb"); 2098 if (cmd->hdr.return_code) 2099 return 0; 2100 /* return results to caller */ 2101 card->options.vnicc.sup_chars = rep->hdr.sup; 2102 card->options.vnicc.cur_chars = rep->hdr.cur; 2103 2104 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS) 2105 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds; 2106 2107 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT) 2108 *cbctl->result.timeout = rep->getset_timeout.timeout; 2109 2110 return 0; 2111 } 2112 2113 /* generic VNICC request */ 2114 static int qeth_l2_vnicc_request(struct qeth_card *card, 2115 struct _qeth_l2_vnicc_request_cbctl *cbctl) 2116 { 2117 struct qeth_ipacmd_vnicc *req; 2118 struct qeth_cmd_buffer *iob; 2119 struct qeth_ipa_cmd *cmd; 2120 int rc; 2121 2122 QETH_CARD_TEXT(card, 2, "vniccreq"); 2123 2124 /* get new buffer for request */ 2125 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0); 2126 if (!iob) 2127 return -ENOMEM; 2128 2129 /* create header for request */ 2130 cmd = __ipa_cmd(iob); 2131 req = &cmd->data.vnicc; 2132 2133 /* create sub command header for request */ 2134 req->sub_hdr.data_length = sizeof(req->sub_hdr); 2135 req->sub_hdr.sub_command = cbctl->sub_cmd; 2136 2137 /* create sub command specific request fields */ 2138 switch (cbctl->sub_cmd) { 2139 case IPA_VNICC_QUERY_CHARS: 2140 break; 2141 case IPA_VNICC_QUERY_CMDS: 2142 req->sub_hdr.data_length += sizeof(req->query_cmds); 2143 req->query_cmds.vnic_char = cbctl->param.vnic_char; 2144 break; 2145 case IPA_VNICC_ENABLE: 2146 case IPA_VNICC_DISABLE: 2147 req->sub_hdr.data_length += sizeof(req->set_char); 2148 req->set_char.vnic_char = cbctl->param.vnic_char; 2149 break; 2150 case IPA_VNICC_SET_TIMEOUT: 2151 req->getset_timeout.timeout = cbctl->param.timeout; 2152 /* fallthrough */ 2153 case IPA_VNICC_GET_TIMEOUT: 2154 req->sub_hdr.data_length += sizeof(req->getset_timeout); 2155 req->getset_timeout.vnic_char = cbctl->param.vnic_char; 2156 break; 2157 default: 2158 qeth_release_buffer(iob->channel, iob); 2159 return -EOPNOTSUPP; 2160 } 2161 2162 /* send request */ 2163 rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, 2164 (void *) cbctl); 2165 2166 return qeth_l2_vnicc_makerc(card, rc); 2167 } 2168 2169 /* VNICC query VNIC characteristics request */ 2170 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 2171 { 2172 struct _qeth_l2_vnicc_request_cbctl cbctl; 2173 2174 /* prepare callback control */ 2175 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS; 2176 2177 QETH_CARD_TEXT(card, 2, "vniccqch"); 2178 return qeth_l2_vnicc_request(card, &cbctl); 2179 } 2180 2181 /* VNICC query sub commands request */ 2182 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 2183 u32 *sup_cmds) 2184 { 2185 struct _qeth_l2_vnicc_request_cbctl cbctl; 2186 2187 /* prepare callback control */ 2188 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS; 2189 cbctl.param.vnic_char = vnic_char; 2190 cbctl.result.sup_cmds = sup_cmds; 2191 2192 QETH_CARD_TEXT(card, 2, "vniccqcm"); 2193 return qeth_l2_vnicc_request(card, &cbctl); 2194 } 2195 2196 /* VNICC enable/disable characteristic request */ 2197 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 2198 u32 cmd) 2199 { 2200 struct _qeth_l2_vnicc_request_cbctl cbctl; 2201 2202 /* prepare callback control */ 2203 cbctl.sub_cmd = cmd; 2204 cbctl.param.vnic_char = vnic_char; 2205 2206 QETH_CARD_TEXT(card, 2, "vniccedc"); 2207 return qeth_l2_vnicc_request(card, &cbctl); 2208 } 2209 2210 /* VNICC get/set timeout for characteristic request */ 2211 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 2212 u32 cmd, u32 *timeout) 2213 { 2214 struct _qeth_l2_vnicc_request_cbctl cbctl; 2215 2216 /* prepare callback control */ 2217 cbctl.sub_cmd = cmd; 2218 cbctl.param.vnic_char = vnicc; 2219 if (cmd == IPA_VNICC_SET_TIMEOUT) 2220 cbctl.param.timeout = *timeout; 2221 if (cmd == IPA_VNICC_GET_TIMEOUT) 2222 cbctl.result.timeout = timeout; 2223 2224 QETH_CARD_TEXT(card, 2, "vniccgst"); 2225 return qeth_l2_vnicc_request(card, &cbctl); 2226 } 2227 2228 /* set current VNICC flag state; called from sysfs store function */ 2229 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 2230 { 2231 int rc = 0; 2232 u32 cmd; 2233 2234 QETH_CARD_TEXT(card, 2, "vniccsch"); 2235 2236 /* do not change anything if BridgePort is enabled */ 2237 if (qeth_bridgeport_is_in_use(card)) 2238 return -EBUSY; 2239 2240 /* check if characteristic and enable/disable are supported */ 2241 if (!(card->options.vnicc.sup_chars & vnicc) || 2242 !(card->options.vnicc.set_char_sup & vnicc)) 2243 return -EOPNOTSUPP; 2244 2245 /* set enable/disable command and store wanted characteristic */ 2246 if (state) { 2247 cmd = IPA_VNICC_ENABLE; 2248 card->options.vnicc.wanted_chars |= vnicc; 2249 } else { 2250 cmd = IPA_VNICC_DISABLE; 2251 card->options.vnicc.wanted_chars &= ~vnicc; 2252 } 2253 2254 /* do we need to do anything? */ 2255 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 2256 return rc; 2257 2258 /* if card is not ready, simply stop here */ 2259 if (!qeth_card_hw_is_reachable(card)) { 2260 if (state) 2261 card->options.vnicc.cur_chars |= vnicc; 2262 else 2263 card->options.vnicc.cur_chars &= ~vnicc; 2264 return rc; 2265 } 2266 2267 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 2268 if (rc) 2269 card->options.vnicc.wanted_chars = 2270 card->options.vnicc.cur_chars; 2271 else { 2272 /* successful online VNICC change; handle special cases */ 2273 if (state && vnicc == QETH_VNICC_RX_BCAST) 2274 card->options.vnicc.rx_bcast_enabled = true; 2275 if (!state && vnicc == QETH_VNICC_LEARNING) 2276 qeth_l2_vnicc_recover_timeout(card, vnicc, 2277 &card->options.vnicc.learning_timeout); 2278 } 2279 2280 return rc; 2281 } 2282 2283 /* get current VNICC flag state; called from sysfs show function */ 2284 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 2285 { 2286 int rc = 0; 2287 2288 QETH_CARD_TEXT(card, 2, "vniccgch"); 2289 2290 /* do not get anything if BridgePort is enabled */ 2291 if (qeth_bridgeport_is_in_use(card)) 2292 return -EBUSY; 2293 2294 /* check if characteristic is supported */ 2295 if (!(card->options.vnicc.sup_chars & vnicc)) 2296 return -EOPNOTSUPP; 2297 2298 /* if card is ready, query current VNICC state */ 2299 if (qeth_card_hw_is_reachable(card)) 2300 rc = qeth_l2_vnicc_query_chars(card); 2301 2302 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 2303 return rc; 2304 } 2305 2306 /* set VNICC timeout; called from sysfs store function. Currently, only learning 2307 * supports timeout 2308 */ 2309 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 2310 { 2311 int rc = 0; 2312 2313 QETH_CARD_TEXT(card, 2, "vniccsto"); 2314 2315 /* do not change anything if BridgePort is enabled */ 2316 if (qeth_bridgeport_is_in_use(card)) 2317 return -EBUSY; 2318 2319 /* check if characteristic and set_timeout are supported */ 2320 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2321 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2322 return -EOPNOTSUPP; 2323 2324 /* do we need to do anything? */ 2325 if (card->options.vnicc.learning_timeout == timeout) 2326 return rc; 2327 2328 /* if card is not ready, simply store the value internally and return */ 2329 if (!qeth_card_hw_is_reachable(card)) { 2330 card->options.vnicc.learning_timeout = timeout; 2331 return rc; 2332 } 2333 2334 /* send timeout value to card; if successful, store value internally */ 2335 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2336 IPA_VNICC_SET_TIMEOUT, &timeout); 2337 if (!rc) 2338 card->options.vnicc.learning_timeout = timeout; 2339 2340 return rc; 2341 } 2342 2343 /* get current VNICC timeout; called from sysfs show function. Currently, only 2344 * learning supports timeout 2345 */ 2346 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 2347 { 2348 int rc = 0; 2349 2350 QETH_CARD_TEXT(card, 2, "vniccgto"); 2351 2352 /* do not get anything if BridgePort is enabled */ 2353 if (qeth_bridgeport_is_in_use(card)) 2354 return -EBUSY; 2355 2356 /* check if characteristic and get_timeout are supported */ 2357 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2358 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2359 return -EOPNOTSUPP; 2360 /* if card is ready, get timeout. Otherwise, just return stored value */ 2361 *timeout = card->options.vnicc.learning_timeout; 2362 if (qeth_card_hw_is_reachable(card)) 2363 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2364 IPA_VNICC_GET_TIMEOUT, 2365 timeout); 2366 2367 return rc; 2368 } 2369 2370 /* check if VNICC is currently enabled */ 2371 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 2372 { 2373 /* if everything is turned off, VNICC is not active */ 2374 if (!card->options.vnicc.cur_chars) 2375 return false; 2376 /* default values are only OK if rx_bcast was not enabled by user 2377 * or the card is offline. 2378 */ 2379 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 2380 if (!card->options.vnicc.rx_bcast_enabled || 2381 !qeth_card_hw_is_reachable(card)) 2382 return false; 2383 } 2384 return true; 2385 } 2386 2387 /* recover user timeout setting */ 2388 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 2389 u32 *timeout) 2390 { 2391 if (card->options.vnicc.sup_chars & vnicc && 2392 card->options.vnicc.getset_timeout_sup & vnicc && 2393 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 2394 timeout)) 2395 return false; 2396 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2397 return true; 2398 } 2399 2400 /* recover user characteristic setting */ 2401 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2402 bool enable) 2403 { 2404 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2405 2406 if (card->options.vnicc.sup_chars & vnicc && 2407 card->options.vnicc.set_char_sup & vnicc && 2408 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2409 return false; 2410 card->options.vnicc.wanted_chars &= ~vnicc; 2411 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2412 return true; 2413 } 2414 2415 /* (re-)initialize VNICC */ 2416 static void qeth_l2_vnicc_init(struct qeth_card *card) 2417 { 2418 u32 *timeout = &card->options.vnicc.learning_timeout; 2419 unsigned int chars_len, i; 2420 unsigned long chars_tmp; 2421 u32 sup_cmds, vnicc; 2422 bool enable, error; 2423 2424 QETH_CARD_TEXT(card, 2, "vniccini"); 2425 /* reset rx_bcast */ 2426 card->options.vnicc.rx_bcast_enabled = 0; 2427 /* initial query and storage of VNIC characteristics */ 2428 if (qeth_l2_vnicc_query_chars(card)) { 2429 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2430 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2431 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2432 /* fail quietly if user didn't change the default config */ 2433 card->options.vnicc.sup_chars = 0; 2434 card->options.vnicc.cur_chars = 0; 2435 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2436 return; 2437 } 2438 /* get supported commands for each supported characteristic */ 2439 chars_tmp = card->options.vnicc.sup_chars; 2440 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2441 for_each_set_bit(i, &chars_tmp, chars_len) { 2442 vnicc = BIT(i); 2443 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds); 2444 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) || 2445 !(sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2446 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2447 if (!(sup_cmds & IPA_VNICC_ENABLE) || 2448 !(sup_cmds & IPA_VNICC_DISABLE)) 2449 card->options.vnicc.set_char_sup &= ~vnicc; 2450 } 2451 /* enforce assumed default values and recover settings, if changed */ 2452 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2453 timeout); 2454 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; 2455 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; 2456 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2457 for_each_set_bit(i, &chars_tmp, chars_len) { 2458 vnicc = BIT(i); 2459 enable = card->options.vnicc.wanted_chars & vnicc; 2460 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2461 } 2462 if (error) 2463 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2464 } 2465 2466 /* configure default values of VNIC characteristics */ 2467 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2468 { 2469 /* characteristics values */ 2470 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2471 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2472 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2473 /* supported commands */ 2474 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2475 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2476 /* settings wanted by users */ 2477 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2478 } 2479 2480 module_init(qeth_l2_init); 2481 module_exit(qeth_l2_exit); 2482 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2483 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2484 MODULE_LICENSE("GPL"); 2485