1 /* 2 * Copyright IBM Corp. 2007, 2009 3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 4 * Frank Pavlic <fpavlic@de.ibm.com>, 5 * Thomas Spatzier <tspat@de.ibm.com>, 6 * Frank Blaschka <frank.blaschka@de.ibm.com> 7 */ 8 9 #define KMSG_COMPONENT "qeth" 10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 11 12 #include <linux/module.h> 13 #include <linux/moduleparam.h> 14 #include <linux/string.h> 15 #include <linux/errno.h> 16 #include <linux/kernel.h> 17 #include <linux/slab.h> 18 #include <linux/etherdevice.h> 19 #include <linux/mii.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 "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 int qeth_l2_recover(void *); 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 38 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 39 { 40 struct qeth_card *card = dev->ml_priv; 41 struct mii_ioctl_data *mii_data; 42 int rc = 0; 43 44 if (!card) 45 return -ENODEV; 46 47 if (!qeth_card_hw_is_reachable(card)) 48 return -ENODEV; 49 50 if (card->info.type == QETH_CARD_TYPE_OSN) 51 return -EPERM; 52 53 switch (cmd) { 54 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 55 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 56 break; 57 case SIOC_QETH_GET_CARD_TYPE: 58 if ((card->info.type == QETH_CARD_TYPE_OSD || 59 card->info.type == QETH_CARD_TYPE_OSM || 60 card->info.type == QETH_CARD_TYPE_OSX) && 61 !card->info.guestlan) 62 return 1; 63 return 0; 64 break; 65 case SIOCGMIIPHY: 66 mii_data = if_mii(rq); 67 mii_data->phy_id = 0; 68 break; 69 case SIOCGMIIREG: 70 mii_data = if_mii(rq); 71 if (mii_data->phy_id != 0) 72 rc = -EINVAL; 73 else 74 mii_data->val_out = qeth_mdio_read(dev, 75 mii_data->phy_id, mii_data->reg_num); 76 break; 77 case SIOC_QETH_QUERY_OAT: 78 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 79 break; 80 default: 81 rc = -EOPNOTSUPP; 82 } 83 if (rc) 84 QETH_CARD_TEXT_(card, 2, "ioce%d", rc); 85 return rc; 86 } 87 88 static int qeth_l2_verify_dev(struct net_device *dev) 89 { 90 struct qeth_card *card; 91 unsigned long flags; 92 int rc = 0; 93 94 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 95 list_for_each_entry(card, &qeth_core_card_list.list, list) { 96 if (card->dev == dev) { 97 rc = QETH_REAL_CARD; 98 break; 99 } 100 } 101 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 102 103 return rc; 104 } 105 106 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 107 { 108 struct qeth_card *card; 109 struct net_device *ndev; 110 __u16 temp_dev_no; 111 unsigned long flags; 112 struct ccw_dev_id read_devid; 113 114 ndev = NULL; 115 memcpy(&temp_dev_no, read_dev_no, 2); 116 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 117 list_for_each_entry(card, &qeth_core_card_list.list, list) { 118 ccw_device_get_id(CARD_RDEV(card), &read_devid); 119 if (read_devid.devno == temp_dev_no) { 120 ndev = card->dev; 121 break; 122 } 123 } 124 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 125 return ndev; 126 } 127 128 static int qeth_setdel_makerc(struct qeth_card *card, int retcode) 129 { 130 int rc; 131 132 if (retcode) 133 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 134 switch (retcode) { 135 case IPA_RC_SUCCESS: 136 rc = 0; 137 break; 138 case IPA_RC_L2_UNSUPPORTED_CMD: 139 rc = -EOPNOTSUPP; 140 break; 141 case IPA_RC_L2_ADDR_TABLE_FULL: 142 rc = -ENOSPC; 143 break; 144 case IPA_RC_L2_DUP_MAC: 145 case IPA_RC_L2_DUP_LAYER3_MAC: 146 rc = -EEXIST; 147 break; 148 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 149 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 150 rc = -EPERM; 151 break; 152 case IPA_RC_L2_MAC_NOT_FOUND: 153 rc = -ENOENT; 154 break; 155 case -ENOMEM: 156 rc = -ENOMEM; 157 break; 158 default: 159 rc = -EIO; 160 break; 161 } 162 return rc; 163 } 164 165 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 166 enum qeth_ipa_cmds ipacmd) 167 { 168 struct qeth_ipa_cmd *cmd; 169 struct qeth_cmd_buffer *iob; 170 171 QETH_CARD_TEXT(card, 2, "L2sdmac"); 172 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 173 if (!iob) 174 return -ENOMEM; 175 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 176 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 177 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 178 return qeth_setdel_makerc(card, qeth_send_ipa_cmd(card, iob, 179 NULL, NULL)); 180 } 181 182 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 183 { 184 int rc; 185 186 QETH_CARD_TEXT(card, 2, "L2Setmac"); 187 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 188 if (rc == 0) { 189 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 190 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN); 191 dev_info(&card->gdev->dev, 192 "MAC address %pM successfully registered on device %s\n", 193 card->dev->dev_addr, card->dev->name); 194 } else { 195 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 196 switch (rc) { 197 case -EEXIST: 198 dev_warn(&card->gdev->dev, 199 "MAC address %pM already exists\n", mac); 200 break; 201 case -EPERM: 202 dev_warn(&card->gdev->dev, 203 "MAC address %pM is not authorized\n", mac); 204 break; 205 } 206 } 207 return rc; 208 } 209 210 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 211 { 212 int rc; 213 214 QETH_CARD_TEXT(card, 2, "L2Delmac"); 215 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 216 return 0; 217 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC); 218 if (rc == 0) 219 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 220 return rc; 221 } 222 223 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) 224 { 225 int rc; 226 227 QETH_CARD_TEXT(card, 2, "L2Sgmac"); 228 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC); 229 if (rc == -EEXIST) 230 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n", 231 mac, QETH_CARD_IFNAME(card)); 232 else if (rc) 233 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n", 234 mac, QETH_CARD_IFNAME(card), rc); 235 return rc; 236 } 237 238 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) 239 { 240 int rc; 241 242 QETH_CARD_TEXT(card, 2, "L2Dgmac"); 243 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC); 244 if (rc) 245 QETH_DBF_MESSAGE(2, 246 "Could not delete group MAC %pM on %s: %d\n", 247 mac, QETH_CARD_IFNAME(card), rc); 248 return rc; 249 } 250 251 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac) 252 { 253 if (mac->is_uc) { 254 return qeth_l2_send_setdelmac(card, mac->mac_addr, 255 IPA_CMD_SETVMAC); 256 } else { 257 return qeth_l2_send_setgroupmac(card, mac->mac_addr); 258 } 259 } 260 261 static int qeth_l2_remove_mac(struct qeth_card *card, struct qeth_mac *mac) 262 { 263 if (mac->is_uc) { 264 return qeth_l2_send_setdelmac(card, mac->mac_addr, 265 IPA_CMD_DELVMAC); 266 } else { 267 return qeth_l2_send_delgroupmac(card, mac->mac_addr); 268 } 269 } 270 271 static void qeth_l2_del_all_macs(struct qeth_card *card) 272 { 273 struct qeth_mac *mac; 274 struct hlist_node *tmp; 275 int i; 276 277 spin_lock_bh(&card->mclock); 278 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 279 hash_del(&mac->hnode); 280 kfree(mac); 281 } 282 spin_unlock_bh(&card->mclock); 283 } 284 285 static inline u32 qeth_l2_mac_hash(const u8 *addr) 286 { 287 return get_unaligned((u32 *)(&addr[2])); 288 } 289 290 static inline int qeth_l2_get_cast_type(struct qeth_card *card, 291 struct sk_buff *skb) 292 { 293 if (card->info.type == QETH_CARD_TYPE_OSN) 294 return RTN_UNSPEC; 295 if (is_broadcast_ether_addr(skb->data)) 296 return RTN_BROADCAST; 297 if (is_multicast_ether_addr(skb->data)) 298 return RTN_MULTICAST; 299 return RTN_UNSPEC; 300 } 301 302 static inline void qeth_l2_hdr_csum(struct qeth_card *card, 303 struct qeth_hdr *hdr, struct sk_buff *skb) 304 { 305 struct iphdr *iph = ip_hdr(skb); 306 307 /* tcph->check contains already the pseudo hdr checksum 308 * so just set the header flags 309 */ 310 if (iph->protocol == IPPROTO_UDP) 311 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; 312 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 313 QETH_HDR_EXT_CSUM_HDR_REQ; 314 iph->check = 0; 315 if (card->options.performance_stats) 316 card->perf_stats.tx_csum++; 317 } 318 319 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 320 struct sk_buff *skb, int cast_type) 321 { 322 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 323 324 memset(hdr, 0, sizeof(struct qeth_hdr)); 325 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 326 327 /* set byte byte 3 to casting flags */ 328 if (cast_type == RTN_MULTICAST) 329 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 330 else if (cast_type == RTN_BROADCAST) 331 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 332 else 333 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 334 335 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE; 336 /* VSWITCH relies on the VLAN 337 * information to be present in 338 * the QDIO header */ 339 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 340 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 341 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 342 } 343 } 344 345 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 346 struct qeth_reply *reply, unsigned long data) 347 { 348 struct qeth_ipa_cmd *cmd; 349 350 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 351 cmd = (struct qeth_ipa_cmd *) data; 352 if (cmd->hdr.return_code) { 353 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. " 354 "Continuing\n", cmd->data.setdelvlan.vlan_id, 355 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 356 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 357 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 358 } 359 return 0; 360 } 361 362 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 363 enum qeth_ipa_cmds ipacmd) 364 { 365 struct qeth_ipa_cmd *cmd; 366 struct qeth_cmd_buffer *iob; 367 368 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 369 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 370 if (!iob) 371 return -ENOMEM; 372 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 373 cmd->data.setdelvlan.vlan_id = i; 374 return qeth_send_ipa_cmd(card, iob, 375 qeth_l2_send_setdelvlan_cb, NULL); 376 } 377 378 static void qeth_l2_process_vlans(struct qeth_card *card) 379 { 380 struct qeth_vlan_vid *id; 381 QETH_CARD_TEXT(card, 3, "L2prcvln"); 382 spin_lock_bh(&card->vlanlock); 383 list_for_each_entry(id, &card->vid_list, list) { 384 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 385 } 386 spin_unlock_bh(&card->vlanlock); 387 } 388 389 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 390 __be16 proto, u16 vid) 391 { 392 struct qeth_card *card = dev->ml_priv; 393 struct qeth_vlan_vid *id; 394 int rc; 395 396 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 397 if (!vid) 398 return 0; 399 if (card->info.type == QETH_CARD_TYPE_OSM) { 400 QETH_CARD_TEXT(card, 3, "aidOSM"); 401 return 0; 402 } 403 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 404 QETH_CARD_TEXT(card, 3, "aidREC"); 405 return 0; 406 } 407 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 408 if (id) { 409 id->vid = vid; 410 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 411 if (rc) { 412 kfree(id); 413 return rc; 414 } 415 spin_lock_bh(&card->vlanlock); 416 list_add_tail(&id->list, &card->vid_list); 417 spin_unlock_bh(&card->vlanlock); 418 } else { 419 return -ENOMEM; 420 } 421 return 0; 422 } 423 424 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 425 __be16 proto, u16 vid) 426 { 427 struct qeth_vlan_vid *id, *tmpid = NULL; 428 struct qeth_card *card = dev->ml_priv; 429 int rc = 0; 430 431 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 432 if (card->info.type == QETH_CARD_TYPE_OSM) { 433 QETH_CARD_TEXT(card, 3, "kidOSM"); 434 return 0; 435 } 436 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 437 QETH_CARD_TEXT(card, 3, "kidREC"); 438 return 0; 439 } 440 spin_lock_bh(&card->vlanlock); 441 list_for_each_entry(id, &card->vid_list, list) { 442 if (id->vid == vid) { 443 list_del(&id->list); 444 tmpid = id; 445 break; 446 } 447 } 448 spin_unlock_bh(&card->vlanlock); 449 if (tmpid) { 450 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 451 kfree(tmpid); 452 } 453 qeth_l2_set_rx_mode(card->dev); 454 return rc; 455 } 456 457 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 458 { 459 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 460 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 461 462 qeth_set_allowed_threads(card, 0, 1); 463 if (card->read.state == CH_STATE_UP && 464 card->write.state == CH_STATE_UP && 465 (card->state == CARD_STATE_UP)) { 466 if (recovery_mode && 467 card->info.type != QETH_CARD_TYPE_OSN) { 468 qeth_l2_stop(card->dev); 469 } else { 470 rtnl_lock(); 471 dev_close(card->dev); 472 rtnl_unlock(); 473 } 474 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 475 card->state = CARD_STATE_SOFTSETUP; 476 } 477 if (card->state == CARD_STATE_SOFTSETUP) { 478 qeth_l2_del_all_macs(card); 479 qeth_clear_ipacmd_list(card); 480 card->state = CARD_STATE_HARDSETUP; 481 } 482 if (card->state == CARD_STATE_HARDSETUP) { 483 qeth_qdio_clear_card(card, 0); 484 qeth_clear_qdio_buffers(card); 485 qeth_clear_working_pool_list(card); 486 card->state = CARD_STATE_DOWN; 487 } 488 if (card->state == CARD_STATE_DOWN) { 489 qeth_clear_cmd_buffers(&card->read); 490 qeth_clear_cmd_buffers(&card->write); 491 } 492 } 493 494 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 495 int budget, int *done) 496 { 497 int work_done = 0; 498 struct sk_buff *skb; 499 struct qeth_hdr *hdr; 500 unsigned int len; 501 502 *done = 0; 503 WARN_ON_ONCE(!budget); 504 while (budget) { 505 skb = qeth_core_get_next_skb(card, 506 &card->qdio.in_q->bufs[card->rx.b_index], 507 &card->rx.b_element, &card->rx.e_offset, &hdr); 508 if (!skb) { 509 *done = 1; 510 break; 511 } 512 skb->dev = card->dev; 513 switch (hdr->hdr.l2.id) { 514 case QETH_HEADER_TYPE_LAYER2: 515 skb->pkt_type = PACKET_HOST; 516 skb->protocol = eth_type_trans(skb, skb->dev); 517 if ((card->dev->features & NETIF_F_RXCSUM) 518 && ((hdr->hdr.l2.flags[1] & 519 (QETH_HDR_EXT_CSUM_HDR_REQ | 520 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 521 (QETH_HDR_EXT_CSUM_HDR_REQ | 522 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 523 skb->ip_summed = CHECKSUM_UNNECESSARY; 524 else 525 skb->ip_summed = CHECKSUM_NONE; 526 if (skb->protocol == htons(ETH_P_802_2)) 527 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 528 len = skb->len; 529 napi_gro_receive(&card->napi, skb); 530 break; 531 case QETH_HEADER_TYPE_OSN: 532 if (card->info.type == QETH_CARD_TYPE_OSN) { 533 skb_push(skb, sizeof(struct qeth_hdr)); 534 skb_copy_to_linear_data(skb, hdr, 535 sizeof(struct qeth_hdr)); 536 len = skb->len; 537 card->osn_info.data_cb(skb); 538 break; 539 } 540 /* else unknown */ 541 default: 542 dev_kfree_skb_any(skb); 543 QETH_CARD_TEXT(card, 3, "inbunkno"); 544 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 545 continue; 546 } 547 work_done++; 548 budget--; 549 card->stats.rx_packets++; 550 card->stats.rx_bytes += len; 551 } 552 return work_done; 553 } 554 555 static int qeth_l2_poll(struct napi_struct *napi, int budget) 556 { 557 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 558 int work_done = 0; 559 struct qeth_qdio_buffer *buffer; 560 int done; 561 int new_budget = budget; 562 563 if (card->options.performance_stats) { 564 card->perf_stats.inbound_cnt++; 565 card->perf_stats.inbound_start_time = qeth_get_micros(); 566 } 567 568 while (1) { 569 if (!card->rx.b_count) { 570 card->rx.qdio_err = 0; 571 card->rx.b_count = qdio_get_next_buffers( 572 card->data.ccwdev, 0, &card->rx.b_index, 573 &card->rx.qdio_err); 574 if (card->rx.b_count <= 0) { 575 card->rx.b_count = 0; 576 break; 577 } 578 card->rx.b_element = 579 &card->qdio.in_q->bufs[card->rx.b_index] 580 .buffer->element[0]; 581 card->rx.e_offset = 0; 582 } 583 584 while (card->rx.b_count) { 585 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 586 if (!(card->rx.qdio_err && 587 qeth_check_qdio_errors(card, buffer->buffer, 588 card->rx.qdio_err, "qinerr"))) 589 work_done += qeth_l2_process_inbound_buffer( 590 card, new_budget, &done); 591 else 592 done = 1; 593 594 if (done) { 595 if (card->options.performance_stats) 596 card->perf_stats.bufs_rec++; 597 qeth_put_buffer_pool_entry(card, 598 buffer->pool_entry); 599 qeth_queue_input_buffer(card, card->rx.b_index); 600 card->rx.b_count--; 601 if (card->rx.b_count) { 602 card->rx.b_index = 603 (card->rx.b_index + 1) % 604 QDIO_MAX_BUFFERS_PER_Q; 605 card->rx.b_element = 606 &card->qdio.in_q 607 ->bufs[card->rx.b_index] 608 .buffer->element[0]; 609 card->rx.e_offset = 0; 610 } 611 } 612 613 if (work_done >= budget) 614 goto out; 615 else 616 new_budget = budget - work_done; 617 } 618 } 619 620 napi_complete(napi); 621 if (qdio_start_irq(card->data.ccwdev, 0)) 622 napi_schedule(&card->napi); 623 out: 624 if (card->options.performance_stats) 625 card->perf_stats.inbound_time += qeth_get_micros() - 626 card->perf_stats.inbound_start_time; 627 return work_done; 628 } 629 630 static int qeth_l2_request_initial_mac(struct qeth_card *card) 631 { 632 int rc = 0; 633 char vendor_pre[] = {0x02, 0x00, 0x00}; 634 635 QETH_DBF_TEXT(SETUP, 2, "doL2init"); 636 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 637 638 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 639 rc = qeth_query_setadapterparms(card); 640 if (rc) { 641 QETH_DBF_MESSAGE(2, "could not query adapter " 642 "parameters on device %s: x%x\n", 643 CARD_BUS_ID(card), rc); 644 } 645 } 646 647 if (card->info.type == QETH_CARD_TYPE_IQD || 648 card->info.type == QETH_CARD_TYPE_OSM || 649 card->info.type == QETH_CARD_TYPE_OSX || 650 card->info.guestlan) { 651 rc = qeth_setadpparms_change_macaddr(card); 652 if (rc) { 653 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 654 "device %s: x%x\n", CARD_BUS_ID(card), rc); 655 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 656 return rc; 657 } 658 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN); 659 } else { 660 eth_random_addr(card->dev->dev_addr); 661 memcpy(card->dev->dev_addr, vendor_pre, 3); 662 } 663 return 0; 664 } 665 666 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 667 { 668 struct sockaddr *addr = p; 669 struct qeth_card *card = dev->ml_priv; 670 int rc = 0; 671 672 QETH_CARD_TEXT(card, 3, "setmac"); 673 674 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { 675 QETH_CARD_TEXT(card, 3, "setmcINV"); 676 return -EOPNOTSUPP; 677 } 678 679 if (card->info.type == QETH_CARD_TYPE_OSN || 680 card->info.type == QETH_CARD_TYPE_OSM || 681 card->info.type == QETH_CARD_TYPE_OSX) { 682 QETH_CARD_TEXT(card, 3, "setmcTYP"); 683 return -EOPNOTSUPP; 684 } 685 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN); 686 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 687 QETH_CARD_TEXT(card, 3, "setmcREC"); 688 return -ERESTARTSYS; 689 } 690 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 691 if (!rc || (rc == -ENOENT)) 692 rc = qeth_l2_send_setmac(card, addr->sa_data); 693 return rc ? -EINVAL : 0; 694 } 695 696 static void qeth_promisc_to_bridge(struct qeth_card *card) 697 { 698 struct net_device *dev = card->dev; 699 enum qeth_ipa_promisc_modes promisc_mode; 700 int role; 701 int rc; 702 703 QETH_CARD_TEXT(card, 3, "pmisc2br"); 704 705 if (!card->options.sbp.reflect_promisc) 706 return; 707 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 708 : SET_PROMISC_MODE_OFF; 709 if (promisc_mode == card->info.promisc_mode) 710 return; 711 712 if (promisc_mode == SET_PROMISC_MODE_ON) { 713 if (card->options.sbp.reflect_promisc_primary) 714 role = QETH_SBP_ROLE_PRIMARY; 715 else 716 role = QETH_SBP_ROLE_SECONDARY; 717 } else 718 role = QETH_SBP_ROLE_NONE; 719 720 rc = qeth_bridgeport_setrole(card, role); 721 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 722 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 723 if (!rc) { 724 card->options.sbp.role = role; 725 card->info.promisc_mode = promisc_mode; 726 } 727 728 } 729 /* New MAC address is added to the hash table and marked to be written on card 730 * only if there is not in the hash table storage already 731 * 732 */ 733 static void 734 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc) 735 { 736 struct qeth_mac *mac; 737 738 hash_for_each_possible(card->mac_htable, mac, hnode, 739 qeth_l2_mac_hash(ha->addr)) { 740 if (is_uc == mac->is_uc && 741 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) { 742 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 743 return; 744 } 745 } 746 747 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 748 749 if (!mac) 750 return; 751 752 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN); 753 mac->is_uc = is_uc; 754 mac->disp_flag = QETH_DISP_ADDR_ADD; 755 756 hash_add(card->mac_htable, &mac->hnode, 757 qeth_l2_mac_hash(mac->mac_addr)); 758 759 } 760 761 static void qeth_l2_set_rx_mode(struct net_device *dev) 762 { 763 struct qeth_card *card = dev->ml_priv; 764 struct netdev_hw_addr *ha; 765 struct qeth_mac *mac; 766 struct hlist_node *tmp; 767 int i; 768 int rc; 769 770 if (card->info.type == QETH_CARD_TYPE_OSN) 771 return; 772 773 QETH_CARD_TEXT(card, 3, "setmulti"); 774 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 775 (card->state != CARD_STATE_UP)) 776 return; 777 778 spin_lock_bh(&card->mclock); 779 780 netdev_for_each_mc_addr(ha, dev) 781 qeth_l2_add_mac(card, ha, 0); 782 783 netdev_for_each_uc_addr(ha, dev) 784 qeth_l2_add_mac(card, ha, 1); 785 786 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 787 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) { 788 qeth_l2_remove_mac(card, mac); 789 hash_del(&mac->hnode); 790 kfree(mac); 791 792 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) { 793 rc = qeth_l2_write_mac(card, mac); 794 if (rc) { 795 hash_del(&mac->hnode); 796 kfree(mac); 797 } else 798 mac->disp_flag = QETH_DISP_ADDR_DELETE; 799 } else 800 mac->disp_flag = QETH_DISP_ADDR_DELETE; 801 } 802 803 spin_unlock_bh(&card->mclock); 804 805 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 806 qeth_setadp_promisc_mode(card); 807 else 808 qeth_promisc_to_bridge(card); 809 } 810 811 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 812 { 813 int rc; 814 struct qeth_hdr *hdr = NULL; 815 int elements = 0; 816 struct qeth_card *card = dev->ml_priv; 817 struct sk_buff *new_skb = skb; 818 int cast_type = qeth_l2_get_cast_type(card, skb); 819 struct qeth_qdio_out_q *queue; 820 int tx_bytes = skb->len; 821 int data_offset = -1; 822 int elements_needed = 0; 823 int hd_len = 0; 824 int nr_frags; 825 826 if (card->qdio.do_prio_queueing || (cast_type && 827 card->info.is_multicast_different)) 828 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 829 qeth_get_ip_version(skb), cast_type)]; 830 else 831 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 832 833 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 834 card->stats.tx_carrier_errors++; 835 goto tx_drop; 836 } 837 838 if ((card->info.type == QETH_CARD_TYPE_OSN) && 839 (skb->protocol == htons(ETH_P_IPV6))) 840 goto tx_drop; 841 842 if (card->options.performance_stats) { 843 card->perf_stats.outbound_cnt++; 844 card->perf_stats.outbound_start_time = qeth_get_micros(); 845 } 846 netif_stop_queue(dev); 847 848 /* fix hardware limitation: as long as we do not have sbal 849 * chaining we can not send long frag lists 850 */ 851 if ((card->info.type != QETH_CARD_TYPE_IQD) && 852 !qeth_get_elements_no(card, new_skb, 0)) { 853 int lin_rc = skb_linearize(new_skb); 854 855 if (card->options.performance_stats) { 856 if (lin_rc) 857 card->perf_stats.tx_linfail++; 858 else 859 card->perf_stats.tx_lin++; 860 } 861 if (lin_rc) 862 goto tx_drop; 863 } 864 865 if (card->info.type == QETH_CARD_TYPE_OSN) 866 hdr = (struct qeth_hdr *)skb->data; 867 else { 868 if (card->info.type == QETH_CARD_TYPE_IQD) { 869 new_skb = skb; 870 data_offset = ETH_HLEN; 871 hd_len = ETH_HLEN; 872 hdr = kmem_cache_alloc(qeth_core_header_cache, 873 GFP_ATOMIC); 874 if (!hdr) 875 goto tx_drop; 876 elements_needed++; 877 skb_reset_mac_header(new_skb); 878 qeth_l2_fill_header(card, hdr, new_skb, cast_type); 879 hdr->hdr.l2.pkt_length = new_skb->len; 880 memcpy(((char *)hdr) + sizeof(struct qeth_hdr), 881 skb_mac_header(new_skb), ETH_HLEN); 882 } else { 883 /* create a clone with writeable headroom */ 884 new_skb = skb_realloc_headroom(skb, 885 sizeof(struct qeth_hdr)); 886 if (!new_skb) 887 goto tx_drop; 888 hdr = (struct qeth_hdr *)skb_push(new_skb, 889 sizeof(struct qeth_hdr)); 890 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr)); 891 qeth_l2_fill_header(card, hdr, new_skb, cast_type); 892 if (new_skb->ip_summed == CHECKSUM_PARTIAL) 893 qeth_l2_hdr_csum(card, hdr, new_skb); 894 } 895 } 896 897 elements = qeth_get_elements_no(card, new_skb, elements_needed); 898 if (!elements) { 899 if (data_offset >= 0) 900 kmem_cache_free(qeth_core_header_cache, hdr); 901 goto tx_drop; 902 } 903 904 if (card->info.type != QETH_CARD_TYPE_IQD) { 905 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, 906 sizeof(struct qeth_hdr_layer2))) 907 goto tx_drop; 908 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 909 elements); 910 } else 911 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 912 elements, data_offset, hd_len); 913 if (!rc) { 914 card->stats.tx_packets++; 915 card->stats.tx_bytes += tx_bytes; 916 if (card->options.performance_stats) { 917 nr_frags = skb_shinfo(new_skb)->nr_frags; 918 if (nr_frags) { 919 card->perf_stats.sg_skbs_sent++; 920 /* nr_frags + skb->data */ 921 card->perf_stats.sg_frags_sent += nr_frags + 1; 922 } 923 } 924 if (new_skb != skb) 925 dev_kfree_skb_any(skb); 926 rc = NETDEV_TX_OK; 927 } else { 928 if (data_offset >= 0) 929 kmem_cache_free(qeth_core_header_cache, hdr); 930 931 if (rc == -EBUSY) { 932 if (new_skb != skb) 933 dev_kfree_skb_any(new_skb); 934 return NETDEV_TX_BUSY; 935 } else 936 goto tx_drop; 937 } 938 939 netif_wake_queue(dev); 940 if (card->options.performance_stats) 941 card->perf_stats.outbound_time += qeth_get_micros() - 942 card->perf_stats.outbound_start_time; 943 return rc; 944 945 tx_drop: 946 card->stats.tx_dropped++; 947 card->stats.tx_errors++; 948 if ((new_skb != skb) && new_skb) 949 dev_kfree_skb_any(new_skb); 950 dev_kfree_skb_any(skb); 951 netif_wake_queue(dev); 952 return NETDEV_TX_OK; 953 } 954 955 static int __qeth_l2_open(struct net_device *dev) 956 { 957 struct qeth_card *card = dev->ml_priv; 958 int rc = 0; 959 960 QETH_CARD_TEXT(card, 4, "qethopen"); 961 if (card->state == CARD_STATE_UP) 962 return rc; 963 if (card->state != CARD_STATE_SOFTSETUP) 964 return -ENODEV; 965 966 if ((card->info.type != QETH_CARD_TYPE_OSN) && 967 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 968 QETH_CARD_TEXT(card, 4, "nomacadr"); 969 return -EPERM; 970 } 971 card->data.state = CH_STATE_UP; 972 card->state = CARD_STATE_UP; 973 netif_start_queue(dev); 974 975 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 976 napi_enable(&card->napi); 977 napi_schedule(&card->napi); 978 } else 979 rc = -EIO; 980 return rc; 981 } 982 983 static int qeth_l2_open(struct net_device *dev) 984 { 985 struct qeth_card *card = dev->ml_priv; 986 987 QETH_CARD_TEXT(card, 5, "qethope_"); 988 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 989 QETH_CARD_TEXT(card, 3, "openREC"); 990 return -ERESTARTSYS; 991 } 992 return __qeth_l2_open(dev); 993 } 994 995 static int qeth_l2_stop(struct net_device *dev) 996 { 997 struct qeth_card *card = dev->ml_priv; 998 999 QETH_CARD_TEXT(card, 4, "qethstop"); 1000 netif_tx_disable(dev); 1001 if (card->state == CARD_STATE_UP) { 1002 card->state = CARD_STATE_SOFTSETUP; 1003 napi_disable(&card->napi); 1004 } 1005 return 0; 1006 } 1007 1008 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 1009 { 1010 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1011 1012 qeth_l2_create_device_attributes(&gdev->dev); 1013 INIT_LIST_HEAD(&card->vid_list); 1014 hash_init(card->mac_htable); 1015 card->options.layer2 = 1; 1016 card->info.hwtrap = 0; 1017 return 0; 1018 } 1019 1020 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 1021 { 1022 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1023 1024 qeth_l2_remove_device_attributes(&cgdev->dev); 1025 qeth_set_allowed_threads(card, 0, 1); 1026 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1027 1028 if (cgdev->state == CCWGROUP_ONLINE) 1029 qeth_l2_set_offline(cgdev); 1030 1031 if (card->dev) { 1032 netif_napi_del(&card->napi); 1033 unregister_netdev(card->dev); 1034 card->dev = NULL; 1035 } 1036 return; 1037 } 1038 1039 static const struct ethtool_ops qeth_l2_ethtool_ops = { 1040 .get_link = ethtool_op_get_link, 1041 .get_strings = qeth_core_get_strings, 1042 .get_ethtool_stats = qeth_core_get_ethtool_stats, 1043 .get_sset_count = qeth_core_get_sset_count, 1044 .get_drvinfo = qeth_core_get_drvinfo, 1045 .get_settings = qeth_core_ethtool_get_settings, 1046 }; 1047 1048 static const struct ethtool_ops qeth_l2_osn_ops = { 1049 .get_strings = qeth_core_get_strings, 1050 .get_ethtool_stats = qeth_core_get_ethtool_stats, 1051 .get_sset_count = qeth_core_get_sset_count, 1052 .get_drvinfo = qeth_core_get_drvinfo, 1053 }; 1054 1055 static const struct net_device_ops qeth_l2_netdev_ops = { 1056 .ndo_open = qeth_l2_open, 1057 .ndo_stop = qeth_l2_stop, 1058 .ndo_get_stats = qeth_get_stats, 1059 .ndo_start_xmit = qeth_l2_hard_start_xmit, 1060 .ndo_validate_addr = eth_validate_addr, 1061 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 1062 .ndo_do_ioctl = qeth_l2_do_ioctl, 1063 .ndo_set_mac_address = qeth_l2_set_mac_address, 1064 .ndo_change_mtu = qeth_change_mtu, 1065 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 1066 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 1067 .ndo_tx_timeout = qeth_tx_timeout, 1068 .ndo_fix_features = qeth_fix_features, 1069 .ndo_set_features = qeth_set_features 1070 }; 1071 1072 static int qeth_l2_setup_netdev(struct qeth_card *card) 1073 { 1074 switch (card->info.type) { 1075 case QETH_CARD_TYPE_IQD: 1076 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 1077 ether_setup); 1078 break; 1079 case QETH_CARD_TYPE_OSN: 1080 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 1081 ether_setup); 1082 card->dev->flags |= IFF_NOARP; 1083 break; 1084 default: 1085 card->dev = alloc_etherdev(0); 1086 } 1087 1088 if (!card->dev) 1089 return -ENODEV; 1090 1091 card->dev->ml_priv = card; 1092 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 1093 card->dev->mtu = card->info.initial_mtu; 1094 card->dev->min_mtu = 64; 1095 card->dev->max_mtu = ETH_MAX_MTU; 1096 card->dev->netdev_ops = &qeth_l2_netdev_ops; 1097 card->dev->ethtool_ops = 1098 (card->info.type != QETH_CARD_TYPE_OSN) ? 1099 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops; 1100 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 1101 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 1102 card->dev->hw_features = NETIF_F_SG; 1103 card->dev->vlan_features = NETIF_F_SG; 1104 /* OSA 3S and earlier has no RX/TX support */ 1105 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 1106 card->dev->hw_features |= NETIF_F_IP_CSUM; 1107 card->dev->vlan_features |= NETIF_F_IP_CSUM; 1108 } 1109 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 1110 card->dev->hw_features |= NETIF_F_RXCSUM; 1111 card->dev->vlan_features |= NETIF_F_RXCSUM; 1112 } 1113 } 1114 card->info.broadcast_capable = 1; 1115 qeth_l2_request_initial_mac(card); 1116 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) * 1117 PAGE_SIZE; 1118 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1119 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT); 1120 netif_carrier_off(card->dev); 1121 return register_netdev(card->dev); 1122 } 1123 1124 static int qeth_l2_start_ipassists(struct qeth_card *card) 1125 { 1126 /* configure isolation level */ 1127 if (qeth_set_access_ctrl_online(card, 0)) 1128 return -ENODEV; 1129 return 0; 1130 } 1131 1132 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1133 { 1134 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1135 int rc = 0; 1136 enum qeth_card_states recover_flag; 1137 1138 mutex_lock(&card->discipline_mutex); 1139 mutex_lock(&card->conf_mutex); 1140 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1141 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1142 1143 recover_flag = card->state; 1144 rc = qeth_core_hardsetup_card(card); 1145 if (rc) { 1146 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1147 rc = -ENODEV; 1148 goto out_remove; 1149 } 1150 qeth_bridgeport_query_support(card); 1151 if (card->options.sbp.supported_funcs) 1152 dev_info(&card->gdev->dev, 1153 "The device represents a Bridge Capable Port\n"); 1154 qeth_trace_features(card); 1155 1156 if (!card->dev && qeth_l2_setup_netdev(card)) { 1157 rc = -ENODEV; 1158 goto out_remove; 1159 } 1160 1161 if (card->info.type != QETH_CARD_TYPE_OSN) 1162 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1163 1164 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1165 if (card->info.hwtrap && 1166 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1167 card->info.hwtrap = 0; 1168 } else 1169 card->info.hwtrap = 0; 1170 1171 qeth_l2_setup_bridgeport_attrs(card); 1172 1173 card->state = CARD_STATE_HARDSETUP; 1174 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1175 qeth_print_status_message(card); 1176 1177 /* softsetup */ 1178 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1179 1180 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1181 (card->info.type == QETH_CARD_TYPE_OSX)) { 1182 rc = qeth_l2_start_ipassists(card); 1183 if (rc) 1184 goto out_remove; 1185 } 1186 1187 if (card->info.type != QETH_CARD_TYPE_OSN && 1188 card->info.type != QETH_CARD_TYPE_OSM) 1189 qeth_l2_process_vlans(card); 1190 1191 netif_tx_disable(card->dev); 1192 1193 rc = qeth_init_qdio_queues(card); 1194 if (rc) { 1195 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1196 rc = -ENODEV; 1197 goto out_remove; 1198 } 1199 card->state = CARD_STATE_SOFTSETUP; 1200 if (card->lan_online) 1201 netif_carrier_on(card->dev); 1202 else 1203 netif_carrier_off(card->dev); 1204 1205 qeth_set_allowed_threads(card, 0xffffffff, 0); 1206 if (recover_flag == CARD_STATE_RECOVER) { 1207 if (recovery_mode && 1208 card->info.type != QETH_CARD_TYPE_OSN) { 1209 __qeth_l2_open(card->dev); 1210 } else { 1211 rtnl_lock(); 1212 dev_open(card->dev); 1213 rtnl_unlock(); 1214 } 1215 /* this also sets saved unicast addresses */ 1216 qeth_l2_set_rx_mode(card->dev); 1217 rtnl_lock(); 1218 qeth_recover_features(card->dev); 1219 rtnl_unlock(); 1220 } 1221 /* let user_space know that device is online */ 1222 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1223 mutex_unlock(&card->conf_mutex); 1224 mutex_unlock(&card->discipline_mutex); 1225 return 0; 1226 1227 out_remove: 1228 qeth_l2_stop_card(card, 0); 1229 ccw_device_set_offline(CARD_DDEV(card)); 1230 ccw_device_set_offline(CARD_WDEV(card)); 1231 ccw_device_set_offline(CARD_RDEV(card)); 1232 qdio_free(CARD_DDEV(card)); 1233 if (recover_flag == CARD_STATE_RECOVER) 1234 card->state = CARD_STATE_RECOVER; 1235 else 1236 card->state = CARD_STATE_DOWN; 1237 mutex_unlock(&card->conf_mutex); 1238 mutex_unlock(&card->discipline_mutex); 1239 return rc; 1240 } 1241 1242 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1243 { 1244 return __qeth_l2_set_online(gdev, 0); 1245 } 1246 1247 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1248 int recovery_mode) 1249 { 1250 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1251 int rc = 0, rc2 = 0, rc3 = 0; 1252 enum qeth_card_states recover_flag; 1253 1254 mutex_lock(&card->discipline_mutex); 1255 mutex_lock(&card->conf_mutex); 1256 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1257 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1258 1259 if (card->dev && netif_carrier_ok(card->dev)) 1260 netif_carrier_off(card->dev); 1261 recover_flag = card->state; 1262 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1263 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1264 card->info.hwtrap = 1; 1265 } 1266 qeth_l2_stop_card(card, recovery_mode); 1267 rc = ccw_device_set_offline(CARD_DDEV(card)); 1268 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1269 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1270 if (!rc) 1271 rc = (rc2) ? rc2 : rc3; 1272 if (rc) 1273 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1274 qdio_free(CARD_DDEV(card)); 1275 if (recover_flag == CARD_STATE_UP) 1276 card->state = CARD_STATE_RECOVER; 1277 /* let user_space know that device is offline */ 1278 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1279 mutex_unlock(&card->conf_mutex); 1280 mutex_unlock(&card->discipline_mutex); 1281 return 0; 1282 } 1283 1284 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1285 { 1286 return __qeth_l2_set_offline(cgdev, 0); 1287 } 1288 1289 static int qeth_l2_recover(void *ptr) 1290 { 1291 struct qeth_card *card; 1292 int rc = 0; 1293 1294 card = (struct qeth_card *) ptr; 1295 QETH_CARD_TEXT(card, 2, "recover1"); 1296 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1297 return 0; 1298 QETH_CARD_TEXT(card, 2, "recover2"); 1299 dev_warn(&card->gdev->dev, 1300 "A recovery process has been started for the device\n"); 1301 qeth_set_recovery_task(card); 1302 __qeth_l2_set_offline(card->gdev, 1); 1303 rc = __qeth_l2_set_online(card->gdev, 1); 1304 if (!rc) 1305 dev_info(&card->gdev->dev, 1306 "Device successfully recovered!\n"); 1307 else { 1308 qeth_close_dev(card); 1309 dev_warn(&card->gdev->dev, "The qeth device driver " 1310 "failed to recover an error on the device\n"); 1311 } 1312 qeth_clear_recovery_task(card); 1313 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1314 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1315 return 0; 1316 } 1317 1318 static int __init qeth_l2_init(void) 1319 { 1320 pr_info("register layer 2 discipline\n"); 1321 return 0; 1322 } 1323 1324 static void __exit qeth_l2_exit(void) 1325 { 1326 pr_info("unregister layer 2 discipline\n"); 1327 } 1328 1329 static void qeth_l2_shutdown(struct ccwgroup_device *gdev) 1330 { 1331 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1332 qeth_set_allowed_threads(card, 0, 1); 1333 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 1334 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1335 qeth_qdio_clear_card(card, 0); 1336 qeth_clear_qdio_buffers(card); 1337 qdio_free(CARD_DDEV(card)); 1338 } 1339 1340 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1341 { 1342 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1343 1344 if (card->dev) 1345 netif_device_detach(card->dev); 1346 qeth_set_allowed_threads(card, 0, 1); 1347 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1348 if (gdev->state == CCWGROUP_OFFLINE) 1349 return 0; 1350 if (card->state == CARD_STATE_UP) { 1351 if (card->info.hwtrap) 1352 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1353 __qeth_l2_set_offline(card->gdev, 1); 1354 } else 1355 __qeth_l2_set_offline(card->gdev, 0); 1356 return 0; 1357 } 1358 1359 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1360 { 1361 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1362 int rc = 0; 1363 1364 if (gdev->state == CCWGROUP_OFFLINE) 1365 goto out; 1366 1367 if (card->state == CARD_STATE_RECOVER) { 1368 rc = __qeth_l2_set_online(card->gdev, 1); 1369 if (rc) { 1370 rtnl_lock(); 1371 dev_close(card->dev); 1372 rtnl_unlock(); 1373 } 1374 } else 1375 rc = __qeth_l2_set_online(card->gdev, 0); 1376 out: 1377 qeth_set_allowed_threads(card, 0xffffffff, 0); 1378 if (card->dev) 1379 netif_device_attach(card->dev); 1380 if (rc) 1381 dev_warn(&card->gdev->dev, "The qeth device driver " 1382 "failed to recover an error on the device\n"); 1383 return rc; 1384 } 1385 1386 /* Returns zero if the command is successfully "consumed" */ 1387 static int qeth_l2_control_event(struct qeth_card *card, 1388 struct qeth_ipa_cmd *cmd) 1389 { 1390 switch (cmd->hdr.command) { 1391 case IPA_CMD_SETBRIDGEPORT_OSA: 1392 case IPA_CMD_SETBRIDGEPORT_IQD: 1393 if (cmd->data.sbp.hdr.command_code == 1394 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1395 qeth_bridge_state_change(card, cmd); 1396 return 0; 1397 } else 1398 return 1; 1399 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1400 qeth_bridge_host_event(card, cmd); 1401 return 0; 1402 default: 1403 return 1; 1404 } 1405 } 1406 1407 struct qeth_discipline qeth_l2_discipline = { 1408 .start_poll = qeth_qdio_start_poll, 1409 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1410 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1411 .recover = qeth_l2_recover, 1412 .setup = qeth_l2_probe_device, 1413 .remove = qeth_l2_remove_device, 1414 .set_online = qeth_l2_set_online, 1415 .set_offline = qeth_l2_set_offline, 1416 .shutdown = qeth_l2_shutdown, 1417 .freeze = qeth_l2_pm_suspend, 1418 .thaw = qeth_l2_pm_resume, 1419 .restore = qeth_l2_pm_resume, 1420 .control_event_handler = qeth_l2_control_event, 1421 }; 1422 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1423 1424 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1425 struct qeth_cmd_buffer *iob) 1426 { 1427 unsigned long flags; 1428 int rc = 0; 1429 1430 QETH_CARD_TEXT(card, 5, "osndctrd"); 1431 1432 wait_event(card->wait_q, 1433 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1434 qeth_prepare_control_data(card, len, iob); 1435 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1436 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1437 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1438 (addr_t) iob, 0, 0); 1439 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1440 if (rc) { 1441 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1442 "ccw_device_start rc = %i\n", rc); 1443 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1444 qeth_release_buffer(iob->channel, iob); 1445 atomic_set(&card->write.irq_pending, 0); 1446 wake_up(&card->wait_q); 1447 } 1448 return rc; 1449 } 1450 1451 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1452 struct qeth_cmd_buffer *iob, int data_len) 1453 { 1454 u16 s1, s2; 1455 1456 QETH_CARD_TEXT(card, 4, "osndipa"); 1457 1458 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1459 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1460 s2 = (u16)data_len; 1461 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1462 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1463 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1464 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1465 return qeth_osn_send_control_data(card, s1, iob); 1466 } 1467 1468 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1469 { 1470 struct qeth_cmd_buffer *iob; 1471 struct qeth_card *card; 1472 int rc; 1473 1474 if (!dev) 1475 return -ENODEV; 1476 card = dev->ml_priv; 1477 if (!card) 1478 return -ENODEV; 1479 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1480 if (!qeth_card_hw_is_reachable(card)) 1481 return -ENODEV; 1482 iob = qeth_wait_for_buffer(&card->write); 1483 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1484 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1485 return rc; 1486 } 1487 EXPORT_SYMBOL(qeth_osn_assist); 1488 1489 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1490 int (*assist_cb)(struct net_device *, void *), 1491 int (*data_cb)(struct sk_buff *)) 1492 { 1493 struct qeth_card *card; 1494 1495 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1496 if (*dev == NULL) 1497 return -ENODEV; 1498 card = (*dev)->ml_priv; 1499 if (!card) 1500 return -ENODEV; 1501 QETH_CARD_TEXT(card, 2, "osnreg"); 1502 if ((assist_cb == NULL) || (data_cb == NULL)) 1503 return -EINVAL; 1504 card->osn_info.assist_cb = assist_cb; 1505 card->osn_info.data_cb = data_cb; 1506 return 0; 1507 } 1508 EXPORT_SYMBOL(qeth_osn_register); 1509 1510 void qeth_osn_deregister(struct net_device *dev) 1511 { 1512 struct qeth_card *card; 1513 1514 if (!dev) 1515 return; 1516 card = dev->ml_priv; 1517 if (!card) 1518 return; 1519 QETH_CARD_TEXT(card, 2, "osndereg"); 1520 card->osn_info.assist_cb = NULL; 1521 card->osn_info.data_cb = NULL; 1522 return; 1523 } 1524 EXPORT_SYMBOL(qeth_osn_deregister); 1525 1526 /* SETBRIDGEPORT support, async notifications */ 1527 1528 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1529 1530 /** 1531 * qeth_bridge_emit_host_event() - bridgeport address change notification 1532 * @card: qeth_card structure pointer, for udev events. 1533 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1534 * and reset token and addr_lnid are unused and may be NULL. 1535 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1536 * object, 0 - addition of an object. 1537 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1538 * @token: "network token" structure identifying physical address of the port. 1539 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1540 * 1541 * This function is called when registrations and deregistrations are 1542 * reported by the hardware, and also when notifications are enabled - 1543 * for all currently registered addresses. 1544 */ 1545 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1546 enum qeth_an_event_type evtype, 1547 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1548 { 1549 char str[7][32]; 1550 char *env[8]; 1551 int i = 0; 1552 1553 switch (evtype) { 1554 case anev_reg_unreg: 1555 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1556 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1557 ? "deregister" : "register"); 1558 env[i] = str[i]; i++; 1559 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1560 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1561 addr_lnid->lnid); 1562 env[i] = str[i]; i++; 1563 } 1564 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1565 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1566 addr_lnid->mac); 1567 env[i] = str[i]; i++; 1568 } 1569 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1570 token->cssid, token->ssid, token->devnum); 1571 env[i] = str[i]; i++; 1572 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1573 env[i] = str[i]; i++; 1574 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1575 token->chpid); 1576 env[i] = str[i]; i++; 1577 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1578 env[i] = str[i]; i++; 1579 break; 1580 case anev_abort: 1581 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1582 env[i] = str[i]; i++; 1583 break; 1584 case anev_reset: 1585 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1586 env[i] = str[i]; i++; 1587 break; 1588 } 1589 env[i] = NULL; 1590 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1591 } 1592 1593 struct qeth_bridge_state_data { 1594 struct work_struct worker; 1595 struct qeth_card *card; 1596 struct qeth_sbp_state_change qports; 1597 }; 1598 1599 static void qeth_bridge_state_change_worker(struct work_struct *work) 1600 { 1601 struct qeth_bridge_state_data *data = 1602 container_of(work, struct qeth_bridge_state_data, worker); 1603 /* We are only interested in the first entry - local port */ 1604 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1605 char env_locrem[32]; 1606 char env_role[32]; 1607 char env_state[32]; 1608 char *env[] = { 1609 env_locrem, 1610 env_role, 1611 env_state, 1612 NULL 1613 }; 1614 1615 /* Role should not change by itself, but if it did, */ 1616 /* information from the hardware is authoritative. */ 1617 mutex_lock(&data->card->conf_mutex); 1618 data->card->options.sbp.role = entry->role; 1619 mutex_unlock(&data->card->conf_mutex); 1620 1621 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1622 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1623 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1624 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1625 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1626 "<INVALID>"); 1627 snprintf(env_state, sizeof(env_state), "STATE=%s", 1628 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1629 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1630 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1631 "<INVALID>"); 1632 kobject_uevent_env(&data->card->gdev->dev.kobj, 1633 KOBJ_CHANGE, env); 1634 kfree(data); 1635 } 1636 1637 static void qeth_bridge_state_change(struct qeth_card *card, 1638 struct qeth_ipa_cmd *cmd) 1639 { 1640 struct qeth_sbp_state_change *qports = 1641 &cmd->data.sbp.data.state_change; 1642 struct qeth_bridge_state_data *data; 1643 int extrasize; 1644 1645 QETH_CARD_TEXT(card, 2, "brstchng"); 1646 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1647 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1648 return; 1649 } 1650 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1651 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1652 GFP_ATOMIC); 1653 if (!data) { 1654 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1655 return; 1656 } 1657 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1658 data->card = card; 1659 memcpy(&data->qports, qports, 1660 sizeof(struct qeth_sbp_state_change) + extrasize); 1661 queue_work(qeth_wq, &data->worker); 1662 } 1663 1664 struct qeth_bridge_host_data { 1665 struct work_struct worker; 1666 struct qeth_card *card; 1667 struct qeth_ipacmd_addr_change hostevs; 1668 }; 1669 1670 static void qeth_bridge_host_event_worker(struct work_struct *work) 1671 { 1672 struct qeth_bridge_host_data *data = 1673 container_of(work, struct qeth_bridge_host_data, worker); 1674 int i; 1675 1676 if (data->hostevs.lost_event_mask) { 1677 dev_info(&data->card->gdev->dev, 1678 "Address notification from the Bridge Port stopped %s (%s)\n", 1679 data->card->dev->name, 1680 (data->hostevs.lost_event_mask == 0x01) 1681 ? "Overflow" 1682 : (data->hostevs.lost_event_mask == 0x02) 1683 ? "Bridge port state change" 1684 : "Unknown reason"); 1685 mutex_lock(&data->card->conf_mutex); 1686 data->card->options.sbp.hostnotification = 0; 1687 mutex_unlock(&data->card->conf_mutex); 1688 qeth_bridge_emit_host_event(data->card, anev_abort, 1689 0, NULL, NULL); 1690 } else 1691 for (i = 0; i < data->hostevs.num_entries; i++) { 1692 struct qeth_ipacmd_addr_change_entry *entry = 1693 &data->hostevs.entry[i]; 1694 qeth_bridge_emit_host_event(data->card, 1695 anev_reg_unreg, 1696 entry->change_code, 1697 &entry->token, &entry->addr_lnid); 1698 } 1699 kfree(data); 1700 } 1701 1702 static void qeth_bridge_host_event(struct qeth_card *card, 1703 struct qeth_ipa_cmd *cmd) 1704 { 1705 struct qeth_ipacmd_addr_change *hostevs = 1706 &cmd->data.addrchange; 1707 struct qeth_bridge_host_data *data; 1708 int extrasize; 1709 1710 QETH_CARD_TEXT(card, 2, "brhostev"); 1711 if (cmd->hdr.return_code != 0x0000) { 1712 if (cmd->hdr.return_code == 0x0010) { 1713 if (hostevs->lost_event_mask == 0x00) 1714 hostevs->lost_event_mask = 0xff; 1715 } else { 1716 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1717 cmd->hdr.return_code); 1718 return; 1719 } 1720 } 1721 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1722 hostevs->num_entries; 1723 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1724 GFP_ATOMIC); 1725 if (!data) { 1726 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1727 return; 1728 } 1729 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1730 data->card = card; 1731 memcpy(&data->hostevs, hostevs, 1732 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1733 queue_work(qeth_wq, &data->worker); 1734 } 1735 1736 /* SETBRIDGEPORT support; sending commands */ 1737 1738 struct _qeth_sbp_cbctl { 1739 u16 ipa_rc; 1740 u16 cmd_rc; 1741 union { 1742 u32 supported; 1743 struct { 1744 enum qeth_sbp_roles *role; 1745 enum qeth_sbp_states *state; 1746 } qports; 1747 } data; 1748 }; 1749 1750 /** 1751 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1752 * @card: qeth_card structure pointer, for debug messages. 1753 * @cbctl: state structure with hardware return codes. 1754 * @setcmd: IPA command code 1755 * 1756 * Returns negative errno-compatible error indication or 0 on success. 1757 */ 1758 static int qeth_bridgeport_makerc(struct qeth_card *card, 1759 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1760 { 1761 int rc; 1762 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1763 1764 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1765 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1766 switch (cbctl->cmd_rc) { 1767 case 0x0000: 1768 rc = 0; 1769 break; 1770 case 0x2B04: 1771 case 0x0004: 1772 rc = -EOPNOTSUPP; 1773 break; 1774 case 0x2B0C: 1775 case 0x000C: /* Not configured as bridge Port */ 1776 rc = -ENODEV; /* maybe not the best code here? */ 1777 dev_err(&card->gdev->dev, 1778 "The device is not configured as a Bridge Port\n"); 1779 break; 1780 case 0x2B10: 1781 case 0x0010: /* OS mismatch */ 1782 rc = -EPERM; 1783 dev_err(&card->gdev->dev, 1784 "A Bridge Port is already configured by a different operating system\n"); 1785 break; 1786 case 0x2B14: 1787 case 0x0014: /* Another device is Primary */ 1788 switch (setcmd) { 1789 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1790 rc = -EEXIST; 1791 dev_err(&card->gdev->dev, 1792 "The LAN already has a primary Bridge Port\n"); 1793 break; 1794 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1795 rc = -EBUSY; 1796 dev_err(&card->gdev->dev, 1797 "The device is already a primary Bridge Port\n"); 1798 break; 1799 default: 1800 rc = -EIO; 1801 } 1802 break; 1803 case 0x2B18: 1804 case 0x0018: /* This device is currently Secondary */ 1805 rc = -EBUSY; 1806 dev_err(&card->gdev->dev, 1807 "The device is already a secondary Bridge Port\n"); 1808 break; 1809 case 0x2B1C: 1810 case 0x001C: /* Limit for Secondary devices reached */ 1811 rc = -EEXIST; 1812 dev_err(&card->gdev->dev, 1813 "The LAN cannot have more secondary Bridge Ports\n"); 1814 break; 1815 case 0x2B24: 1816 case 0x0024: /* This device is currently Primary */ 1817 rc = -EBUSY; 1818 dev_err(&card->gdev->dev, 1819 "The device is already a primary Bridge Port\n"); 1820 break; 1821 case 0x2B20: 1822 case 0x0020: /* Not authorized by zManager */ 1823 rc = -EACCES; 1824 dev_err(&card->gdev->dev, 1825 "The device is not authorized to be a Bridge Port\n"); 1826 break; 1827 default: 1828 rc = -EIO; 1829 } 1830 else 1831 switch (cbctl->ipa_rc) { 1832 case IPA_RC_NOTSUPP: 1833 rc = -EOPNOTSUPP; 1834 break; 1835 case IPA_RC_UNSUPPORTED_COMMAND: 1836 rc = -EOPNOTSUPP; 1837 break; 1838 default: 1839 rc = -EIO; 1840 } 1841 1842 if (rc) { 1843 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1844 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1845 } 1846 return rc; 1847 } 1848 1849 static inline int ipa_cmd_sbp(struct qeth_card *card) 1850 { 1851 return (card->info.type == QETH_CARD_TYPE_IQD) ? 1852 IPA_CMD_SETBRIDGEPORT_IQD : 1853 IPA_CMD_SETBRIDGEPORT_OSA; 1854 } 1855 1856 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1857 struct qeth_reply *reply, unsigned long data) 1858 { 1859 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1860 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1861 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1862 cbctl->ipa_rc = cmd->hdr.return_code; 1863 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1864 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1865 cbctl->data.supported = 1866 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1867 } else { 1868 cbctl->data.supported = 0; 1869 } 1870 return 0; 1871 } 1872 1873 /** 1874 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1875 * @card: qeth_card structure pointer. 1876 * 1877 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1878 * strucutre: card->options.sbp.supported_funcs. 1879 */ 1880 static void qeth_bridgeport_query_support(struct qeth_card *card) 1881 { 1882 struct qeth_cmd_buffer *iob; 1883 struct qeth_ipa_cmd *cmd; 1884 struct _qeth_sbp_cbctl cbctl; 1885 1886 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1887 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1888 if (!iob) 1889 return; 1890 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1891 cmd->data.sbp.hdr.cmdlength = 1892 sizeof(struct qeth_ipacmd_sbp_hdr) + 1893 sizeof(struct qeth_sbp_query_cmds_supp); 1894 cmd->data.sbp.hdr.command_code = 1895 IPA_SBP_QUERY_COMMANDS_SUPPORTED; 1896 cmd->data.sbp.hdr.used_total = 1; 1897 cmd->data.sbp.hdr.seq_no = 1; 1898 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1899 (void *)&cbctl) || 1900 qeth_bridgeport_makerc(card, &cbctl, 1901 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1902 /* non-zero makerc signifies failure, and produce messages */ 1903 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1904 return; 1905 } 1906 card->options.sbp.supported_funcs = cbctl.data.supported; 1907 } 1908 1909 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1910 struct qeth_reply *reply, unsigned long data) 1911 { 1912 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1913 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1914 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1915 1916 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1917 cbctl->ipa_rc = cmd->hdr.return_code; 1918 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1919 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1920 return 0; 1921 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1922 cbctl->cmd_rc = 0xffff; 1923 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1924 return 0; 1925 } 1926 /* first entry contains the state of the local port */ 1927 if (qports->num_entries > 0) { 1928 if (cbctl->data.qports.role) 1929 *cbctl->data.qports.role = qports->entry[0].role; 1930 if (cbctl->data.qports.state) 1931 *cbctl->data.qports.state = qports->entry[0].state; 1932 } 1933 return 0; 1934 } 1935 1936 /** 1937 * qeth_bridgeport_query_ports() - query local bridgeport status. 1938 * @card: qeth_card structure pointer. 1939 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1940 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1941 * 1942 * Returns negative errno-compatible error indication or 0 on success. 1943 * 1944 * 'role' and 'state' are not updated in case of hardware operation failure. 1945 */ 1946 int qeth_bridgeport_query_ports(struct qeth_card *card, 1947 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1948 { 1949 int rc = 0; 1950 struct qeth_cmd_buffer *iob; 1951 struct qeth_ipa_cmd *cmd; 1952 struct _qeth_sbp_cbctl cbctl = { 1953 .data = { 1954 .qports = { 1955 .role = role, 1956 .state = state, 1957 }, 1958 }, 1959 }; 1960 1961 QETH_CARD_TEXT(card, 2, "brqports"); 1962 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1963 return -EOPNOTSUPP; 1964 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1965 if (!iob) 1966 return -ENOMEM; 1967 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1968 cmd->data.sbp.hdr.cmdlength = 1969 sizeof(struct qeth_ipacmd_sbp_hdr); 1970 cmd->data.sbp.hdr.command_code = 1971 IPA_SBP_QUERY_BRIDGE_PORTS; 1972 cmd->data.sbp.hdr.used_total = 1; 1973 cmd->data.sbp.hdr.seq_no = 1; 1974 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1975 (void *)&cbctl); 1976 if (rc < 0) 1977 return rc; 1978 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1979 } 1980 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1981 1982 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1983 struct qeth_reply *reply, unsigned long data) 1984 { 1985 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1986 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1987 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1988 cbctl->ipa_rc = cmd->hdr.return_code; 1989 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1990 return 0; 1991 } 1992 1993 /** 1994 * qeth_bridgeport_setrole() - Assign primary role to the port. 1995 * @card: qeth_card structure pointer. 1996 * @role: Role to assign. 1997 * 1998 * Returns negative errno-compatible error indication or 0 on success. 1999 */ 2000 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 2001 { 2002 int rc = 0; 2003 int cmdlength; 2004 struct qeth_cmd_buffer *iob; 2005 struct qeth_ipa_cmd *cmd; 2006 struct _qeth_sbp_cbctl cbctl; 2007 enum qeth_ipa_sbp_cmd setcmd; 2008 2009 QETH_CARD_TEXT(card, 2, "brsetrol"); 2010 switch (role) { 2011 case QETH_SBP_ROLE_NONE: 2012 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 2013 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2014 sizeof(struct qeth_sbp_reset_role); 2015 break; 2016 case QETH_SBP_ROLE_PRIMARY: 2017 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 2018 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2019 sizeof(struct qeth_sbp_set_primary); 2020 break; 2021 case QETH_SBP_ROLE_SECONDARY: 2022 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 2023 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2024 sizeof(struct qeth_sbp_set_secondary); 2025 break; 2026 default: 2027 return -EINVAL; 2028 } 2029 if (!(card->options.sbp.supported_funcs & setcmd)) 2030 return -EOPNOTSUPP; 2031 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 2032 if (!iob) 2033 return -ENOMEM; 2034 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2035 cmd->data.sbp.hdr.cmdlength = cmdlength; 2036 cmd->data.sbp.hdr.command_code = setcmd; 2037 cmd->data.sbp.hdr.used_total = 1; 2038 cmd->data.sbp.hdr.seq_no = 1; 2039 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 2040 (void *)&cbctl); 2041 if (rc < 0) 2042 return rc; 2043 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 2044 } 2045 2046 /** 2047 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 2048 * @card: qeth_card structure pointer, for debug messages. 2049 * 2050 * Returns negative errno-compatible error indication or 0 on success. 2051 */ 2052 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 2053 { 2054 int rc; 2055 2056 if (pnso_rc == 0) 2057 switch (response) { 2058 case 0x0001: 2059 rc = 0; 2060 break; 2061 case 0x0004: 2062 case 0x0100: 2063 case 0x0106: 2064 rc = -EOPNOTSUPP; 2065 dev_err(&card->gdev->dev, 2066 "Setting address notification failed\n"); 2067 break; 2068 case 0x0107: 2069 rc = -EAGAIN; 2070 break; 2071 default: 2072 rc = -EIO; 2073 } 2074 else 2075 rc = -EIO; 2076 2077 if (rc) { 2078 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 2079 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 2080 } 2081 return rc; 2082 } 2083 2084 static void qeth_bridgeport_an_set_cb(void *priv, 2085 enum qdio_brinfo_entry_type type, void *entry) 2086 { 2087 struct qeth_card *card = (struct qeth_card *)priv; 2088 struct qdio_brinfo_entry_l2 *l2entry; 2089 u8 code; 2090 2091 if (type != l2_addr_lnid) { 2092 WARN_ON_ONCE(1); 2093 return; 2094 } 2095 2096 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 2097 code = IPA_ADDR_CHANGE_CODE_MACADDR; 2098 if (l2entry->addr_lnid.lnid) 2099 code |= IPA_ADDR_CHANGE_CODE_VLANID; 2100 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 2101 (struct net_if_token *)&l2entry->nit, 2102 (struct mac_addr_lnid *)&l2entry->addr_lnid); 2103 } 2104 2105 /** 2106 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 2107 * @card: qeth_card structure pointer. 2108 * @enable: 0 - disable, non-zero - enable notifications 2109 * 2110 * Returns negative errno-compatible error indication or 0 on success. 2111 * 2112 * On enable, emits a series of address notifications udev events for all 2113 * currently registered hosts. 2114 */ 2115 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2116 { 2117 int rc; 2118 u16 response; 2119 struct ccw_device *ddev; 2120 struct subchannel_id schid; 2121 2122 if (!card) 2123 return -EINVAL; 2124 if (!card->options.sbp.supported_funcs) 2125 return -EOPNOTSUPP; 2126 ddev = CARD_DDEV(card); 2127 ccw_device_get_schid(ddev, &schid); 2128 2129 if (enable) { 2130 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2131 rc = qdio_pnso_brinfo(schid, 1, &response, 2132 qeth_bridgeport_an_set_cb, card); 2133 } else 2134 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2135 return qeth_anset_makerc(card, rc, response); 2136 } 2137 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2138 2139 module_init(qeth_l2_init); 2140 module_exit(qeth_l2_exit); 2141 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2142 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2143 MODULE_LICENSE("GPL"); 2144