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, 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 (data_offset > 0) ? data_offset : 0); 899 if (!elements) { 900 if (data_offset >= 0) 901 kmem_cache_free(qeth_core_header_cache, hdr); 902 goto tx_drop; 903 } 904 905 if (card->info.type != QETH_CARD_TYPE_IQD) { 906 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, 907 sizeof(struct qeth_hdr_layer2))) 908 goto tx_drop; 909 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 910 elements); 911 } else 912 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 913 elements, data_offset, hd_len); 914 if (!rc) { 915 card->stats.tx_packets++; 916 card->stats.tx_bytes += tx_bytes; 917 if (card->options.performance_stats) { 918 nr_frags = skb_shinfo(new_skb)->nr_frags; 919 if (nr_frags) { 920 card->perf_stats.sg_skbs_sent++; 921 /* nr_frags + skb->data */ 922 card->perf_stats.sg_frags_sent += nr_frags + 1; 923 } 924 } 925 if (new_skb != skb) 926 dev_kfree_skb_any(skb); 927 rc = NETDEV_TX_OK; 928 } else { 929 if (data_offset >= 0) 930 kmem_cache_free(qeth_core_header_cache, hdr); 931 932 if (rc == -EBUSY) { 933 if (new_skb != skb) 934 dev_kfree_skb_any(new_skb); 935 return NETDEV_TX_BUSY; 936 } else 937 goto tx_drop; 938 } 939 940 netif_wake_queue(dev); 941 if (card->options.performance_stats) 942 card->perf_stats.outbound_time += qeth_get_micros() - 943 card->perf_stats.outbound_start_time; 944 return rc; 945 946 tx_drop: 947 card->stats.tx_dropped++; 948 card->stats.tx_errors++; 949 if ((new_skb != skb) && new_skb) 950 dev_kfree_skb_any(new_skb); 951 dev_kfree_skb_any(skb); 952 netif_wake_queue(dev); 953 return NETDEV_TX_OK; 954 } 955 956 static int __qeth_l2_open(struct net_device *dev) 957 { 958 struct qeth_card *card = dev->ml_priv; 959 int rc = 0; 960 961 QETH_CARD_TEXT(card, 4, "qethopen"); 962 if (card->state == CARD_STATE_UP) 963 return rc; 964 if (card->state != CARD_STATE_SOFTSETUP) 965 return -ENODEV; 966 967 if ((card->info.type != QETH_CARD_TYPE_OSN) && 968 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 969 QETH_CARD_TEXT(card, 4, "nomacadr"); 970 return -EPERM; 971 } 972 card->data.state = CH_STATE_UP; 973 card->state = CARD_STATE_UP; 974 netif_start_queue(dev); 975 976 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 977 napi_enable(&card->napi); 978 napi_schedule(&card->napi); 979 } else 980 rc = -EIO; 981 return rc; 982 } 983 984 static int qeth_l2_open(struct net_device *dev) 985 { 986 struct qeth_card *card = dev->ml_priv; 987 988 QETH_CARD_TEXT(card, 5, "qethope_"); 989 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 990 QETH_CARD_TEXT(card, 3, "openREC"); 991 return -ERESTARTSYS; 992 } 993 return __qeth_l2_open(dev); 994 } 995 996 static int qeth_l2_stop(struct net_device *dev) 997 { 998 struct qeth_card *card = dev->ml_priv; 999 1000 QETH_CARD_TEXT(card, 4, "qethstop"); 1001 netif_tx_disable(dev); 1002 if (card->state == CARD_STATE_UP) { 1003 card->state = CARD_STATE_SOFTSETUP; 1004 napi_disable(&card->napi); 1005 } 1006 return 0; 1007 } 1008 1009 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 1010 { 1011 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1012 1013 qeth_l2_create_device_attributes(&gdev->dev); 1014 INIT_LIST_HEAD(&card->vid_list); 1015 hash_init(card->mac_htable); 1016 card->options.layer2 = 1; 1017 card->info.hwtrap = 0; 1018 return 0; 1019 } 1020 1021 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 1022 { 1023 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1024 1025 qeth_l2_remove_device_attributes(&cgdev->dev); 1026 qeth_set_allowed_threads(card, 0, 1); 1027 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1028 1029 if (cgdev->state == CCWGROUP_ONLINE) 1030 qeth_l2_set_offline(cgdev); 1031 1032 if (card->dev) { 1033 netif_napi_del(&card->napi); 1034 unregister_netdev(card->dev); 1035 card->dev = NULL; 1036 } 1037 return; 1038 } 1039 1040 static const struct ethtool_ops qeth_l2_ethtool_ops = { 1041 .get_link = ethtool_op_get_link, 1042 .get_strings = qeth_core_get_strings, 1043 .get_ethtool_stats = qeth_core_get_ethtool_stats, 1044 .get_sset_count = qeth_core_get_sset_count, 1045 .get_drvinfo = qeth_core_get_drvinfo, 1046 .get_settings = qeth_core_ethtool_get_settings, 1047 }; 1048 1049 static const struct ethtool_ops qeth_l2_osn_ops = { 1050 .get_strings = qeth_core_get_strings, 1051 .get_ethtool_stats = qeth_core_get_ethtool_stats, 1052 .get_sset_count = qeth_core_get_sset_count, 1053 .get_drvinfo = qeth_core_get_drvinfo, 1054 }; 1055 1056 static const struct net_device_ops qeth_l2_netdev_ops = { 1057 .ndo_open = qeth_l2_open, 1058 .ndo_stop = qeth_l2_stop, 1059 .ndo_get_stats = qeth_get_stats, 1060 .ndo_start_xmit = qeth_l2_hard_start_xmit, 1061 .ndo_validate_addr = eth_validate_addr, 1062 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 1063 .ndo_do_ioctl = qeth_l2_do_ioctl, 1064 .ndo_set_mac_address = qeth_l2_set_mac_address, 1065 .ndo_change_mtu = qeth_change_mtu, 1066 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 1067 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 1068 .ndo_tx_timeout = qeth_tx_timeout, 1069 .ndo_fix_features = qeth_fix_features, 1070 .ndo_set_features = qeth_set_features 1071 }; 1072 1073 static int qeth_l2_setup_netdev(struct qeth_card *card) 1074 { 1075 switch (card->info.type) { 1076 case QETH_CARD_TYPE_IQD: 1077 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 1078 ether_setup); 1079 break; 1080 case QETH_CARD_TYPE_OSN: 1081 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 1082 ether_setup); 1083 card->dev->flags |= IFF_NOARP; 1084 break; 1085 default: 1086 card->dev = alloc_etherdev(0); 1087 } 1088 1089 if (!card->dev) 1090 return -ENODEV; 1091 1092 card->dev->ml_priv = card; 1093 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 1094 card->dev->mtu = card->info.initial_mtu; 1095 card->dev->min_mtu = 64; 1096 card->dev->max_mtu = ETH_MAX_MTU; 1097 card->dev->netdev_ops = &qeth_l2_netdev_ops; 1098 card->dev->ethtool_ops = 1099 (card->info.type != QETH_CARD_TYPE_OSN) ? 1100 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops; 1101 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 1102 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 1103 card->dev->hw_features = NETIF_F_SG; 1104 card->dev->vlan_features = NETIF_F_SG; 1105 /* OSA 3S and earlier has no RX/TX support */ 1106 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 1107 card->dev->hw_features |= NETIF_F_IP_CSUM; 1108 card->dev->vlan_features |= NETIF_F_IP_CSUM; 1109 } 1110 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 1111 card->dev->hw_features |= NETIF_F_RXCSUM; 1112 card->dev->vlan_features |= NETIF_F_RXCSUM; 1113 } 1114 } 1115 card->info.broadcast_capable = 1; 1116 qeth_l2_request_initial_mac(card); 1117 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) * 1118 PAGE_SIZE; 1119 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1120 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT); 1121 netif_carrier_off(card->dev); 1122 return register_netdev(card->dev); 1123 } 1124 1125 static int qeth_l2_start_ipassists(struct qeth_card *card) 1126 { 1127 /* configure isolation level */ 1128 if (qeth_set_access_ctrl_online(card, 0)) 1129 return -ENODEV; 1130 return 0; 1131 } 1132 1133 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1134 { 1135 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1136 int rc = 0; 1137 enum qeth_card_states recover_flag; 1138 1139 mutex_lock(&card->discipline_mutex); 1140 mutex_lock(&card->conf_mutex); 1141 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1142 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1143 1144 recover_flag = card->state; 1145 rc = qeth_core_hardsetup_card(card); 1146 if (rc) { 1147 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1148 rc = -ENODEV; 1149 goto out_remove; 1150 } 1151 qeth_bridgeport_query_support(card); 1152 if (card->options.sbp.supported_funcs) 1153 dev_info(&card->gdev->dev, 1154 "The device represents a Bridge Capable Port\n"); 1155 qeth_trace_features(card); 1156 1157 if (!card->dev && qeth_l2_setup_netdev(card)) { 1158 rc = -ENODEV; 1159 goto out_remove; 1160 } 1161 1162 if (card->info.type != QETH_CARD_TYPE_OSN) 1163 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1164 1165 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1166 if (card->info.hwtrap && 1167 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1168 card->info.hwtrap = 0; 1169 } else 1170 card->info.hwtrap = 0; 1171 1172 qeth_l2_setup_bridgeport_attrs(card); 1173 1174 card->state = CARD_STATE_HARDSETUP; 1175 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1176 qeth_print_status_message(card); 1177 1178 /* softsetup */ 1179 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1180 1181 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1182 (card->info.type == QETH_CARD_TYPE_OSX)) { 1183 rc = qeth_l2_start_ipassists(card); 1184 if (rc) 1185 goto out_remove; 1186 } 1187 1188 if (card->info.type != QETH_CARD_TYPE_OSN && 1189 card->info.type != QETH_CARD_TYPE_OSM) 1190 qeth_l2_process_vlans(card); 1191 1192 netif_tx_disable(card->dev); 1193 1194 rc = qeth_init_qdio_queues(card); 1195 if (rc) { 1196 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1197 rc = -ENODEV; 1198 goto out_remove; 1199 } 1200 card->state = CARD_STATE_SOFTSETUP; 1201 if (card->lan_online) 1202 netif_carrier_on(card->dev); 1203 else 1204 netif_carrier_off(card->dev); 1205 1206 qeth_set_allowed_threads(card, 0xffffffff, 0); 1207 if (recover_flag == CARD_STATE_RECOVER) { 1208 if (recovery_mode && 1209 card->info.type != QETH_CARD_TYPE_OSN) { 1210 __qeth_l2_open(card->dev); 1211 } else { 1212 rtnl_lock(); 1213 dev_open(card->dev); 1214 rtnl_unlock(); 1215 } 1216 /* this also sets saved unicast addresses */ 1217 qeth_l2_set_rx_mode(card->dev); 1218 rtnl_lock(); 1219 qeth_recover_features(card->dev); 1220 rtnl_unlock(); 1221 } 1222 /* let user_space know that device is online */ 1223 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1224 mutex_unlock(&card->conf_mutex); 1225 mutex_unlock(&card->discipline_mutex); 1226 return 0; 1227 1228 out_remove: 1229 qeth_l2_stop_card(card, 0); 1230 ccw_device_set_offline(CARD_DDEV(card)); 1231 ccw_device_set_offline(CARD_WDEV(card)); 1232 ccw_device_set_offline(CARD_RDEV(card)); 1233 qdio_free(CARD_DDEV(card)); 1234 if (recover_flag == CARD_STATE_RECOVER) 1235 card->state = CARD_STATE_RECOVER; 1236 else 1237 card->state = CARD_STATE_DOWN; 1238 mutex_unlock(&card->conf_mutex); 1239 mutex_unlock(&card->discipline_mutex); 1240 return rc; 1241 } 1242 1243 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1244 { 1245 return __qeth_l2_set_online(gdev, 0); 1246 } 1247 1248 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1249 int recovery_mode) 1250 { 1251 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1252 int rc = 0, rc2 = 0, rc3 = 0; 1253 enum qeth_card_states recover_flag; 1254 1255 mutex_lock(&card->discipline_mutex); 1256 mutex_lock(&card->conf_mutex); 1257 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1258 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1259 1260 if (card->dev && netif_carrier_ok(card->dev)) 1261 netif_carrier_off(card->dev); 1262 recover_flag = card->state; 1263 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1264 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1265 card->info.hwtrap = 1; 1266 } 1267 qeth_l2_stop_card(card, recovery_mode); 1268 rc = ccw_device_set_offline(CARD_DDEV(card)); 1269 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1270 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1271 if (!rc) 1272 rc = (rc2) ? rc2 : rc3; 1273 if (rc) 1274 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1275 qdio_free(CARD_DDEV(card)); 1276 if (recover_flag == CARD_STATE_UP) 1277 card->state = CARD_STATE_RECOVER; 1278 /* let user_space know that device is offline */ 1279 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1280 mutex_unlock(&card->conf_mutex); 1281 mutex_unlock(&card->discipline_mutex); 1282 return 0; 1283 } 1284 1285 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1286 { 1287 return __qeth_l2_set_offline(cgdev, 0); 1288 } 1289 1290 static int qeth_l2_recover(void *ptr) 1291 { 1292 struct qeth_card *card; 1293 int rc = 0; 1294 1295 card = (struct qeth_card *) ptr; 1296 QETH_CARD_TEXT(card, 2, "recover1"); 1297 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1298 return 0; 1299 QETH_CARD_TEXT(card, 2, "recover2"); 1300 dev_warn(&card->gdev->dev, 1301 "A recovery process has been started for the device\n"); 1302 qeth_set_recovery_task(card); 1303 __qeth_l2_set_offline(card->gdev, 1); 1304 rc = __qeth_l2_set_online(card->gdev, 1); 1305 if (!rc) 1306 dev_info(&card->gdev->dev, 1307 "Device successfully recovered!\n"); 1308 else { 1309 qeth_close_dev(card); 1310 dev_warn(&card->gdev->dev, "The qeth device driver " 1311 "failed to recover an error on the device\n"); 1312 } 1313 qeth_clear_recovery_task(card); 1314 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1315 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1316 return 0; 1317 } 1318 1319 static int __init qeth_l2_init(void) 1320 { 1321 pr_info("register layer 2 discipline\n"); 1322 return 0; 1323 } 1324 1325 static void __exit qeth_l2_exit(void) 1326 { 1327 pr_info("unregister layer 2 discipline\n"); 1328 } 1329 1330 static void qeth_l2_shutdown(struct ccwgroup_device *gdev) 1331 { 1332 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1333 qeth_set_allowed_threads(card, 0, 1); 1334 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 1335 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1336 qeth_qdio_clear_card(card, 0); 1337 qeth_clear_qdio_buffers(card); 1338 qdio_free(CARD_DDEV(card)); 1339 } 1340 1341 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1342 { 1343 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1344 1345 if (card->dev) 1346 netif_device_detach(card->dev); 1347 qeth_set_allowed_threads(card, 0, 1); 1348 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1349 if (gdev->state == CCWGROUP_OFFLINE) 1350 return 0; 1351 if (card->state == CARD_STATE_UP) { 1352 if (card->info.hwtrap) 1353 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1354 __qeth_l2_set_offline(card->gdev, 1); 1355 } else 1356 __qeth_l2_set_offline(card->gdev, 0); 1357 return 0; 1358 } 1359 1360 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1361 { 1362 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1363 int rc = 0; 1364 1365 if (gdev->state == CCWGROUP_OFFLINE) 1366 goto out; 1367 1368 if (card->state == CARD_STATE_RECOVER) { 1369 rc = __qeth_l2_set_online(card->gdev, 1); 1370 if (rc) { 1371 rtnl_lock(); 1372 dev_close(card->dev); 1373 rtnl_unlock(); 1374 } 1375 } else 1376 rc = __qeth_l2_set_online(card->gdev, 0); 1377 out: 1378 qeth_set_allowed_threads(card, 0xffffffff, 0); 1379 if (card->dev) 1380 netif_device_attach(card->dev); 1381 if (rc) 1382 dev_warn(&card->gdev->dev, "The qeth device driver " 1383 "failed to recover an error on the device\n"); 1384 return rc; 1385 } 1386 1387 /* Returns zero if the command is successfully "consumed" */ 1388 static int qeth_l2_control_event(struct qeth_card *card, 1389 struct qeth_ipa_cmd *cmd) 1390 { 1391 switch (cmd->hdr.command) { 1392 case IPA_CMD_SETBRIDGEPORT_OSA: 1393 case IPA_CMD_SETBRIDGEPORT_IQD: 1394 if (cmd->data.sbp.hdr.command_code == 1395 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1396 qeth_bridge_state_change(card, cmd); 1397 return 0; 1398 } else 1399 return 1; 1400 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1401 qeth_bridge_host_event(card, cmd); 1402 return 0; 1403 default: 1404 return 1; 1405 } 1406 } 1407 1408 struct qeth_discipline qeth_l2_discipline = { 1409 .start_poll = qeth_qdio_start_poll, 1410 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1411 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1412 .recover = qeth_l2_recover, 1413 .setup = qeth_l2_probe_device, 1414 .remove = qeth_l2_remove_device, 1415 .set_online = qeth_l2_set_online, 1416 .set_offline = qeth_l2_set_offline, 1417 .shutdown = qeth_l2_shutdown, 1418 .freeze = qeth_l2_pm_suspend, 1419 .thaw = qeth_l2_pm_resume, 1420 .restore = qeth_l2_pm_resume, 1421 .control_event_handler = qeth_l2_control_event, 1422 }; 1423 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1424 1425 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1426 struct qeth_cmd_buffer *iob) 1427 { 1428 unsigned long flags; 1429 int rc = 0; 1430 1431 QETH_CARD_TEXT(card, 5, "osndctrd"); 1432 1433 wait_event(card->wait_q, 1434 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1435 qeth_prepare_control_data(card, len, iob); 1436 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1437 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1438 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1439 (addr_t) iob, 0, 0); 1440 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1441 if (rc) { 1442 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1443 "ccw_device_start rc = %i\n", rc); 1444 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1445 qeth_release_buffer(iob->channel, iob); 1446 atomic_set(&card->write.irq_pending, 0); 1447 wake_up(&card->wait_q); 1448 } 1449 return rc; 1450 } 1451 1452 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1453 struct qeth_cmd_buffer *iob, int data_len) 1454 { 1455 u16 s1, s2; 1456 1457 QETH_CARD_TEXT(card, 4, "osndipa"); 1458 1459 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1460 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1461 s2 = (u16)data_len; 1462 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1463 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1464 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1465 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1466 return qeth_osn_send_control_data(card, s1, iob); 1467 } 1468 1469 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1470 { 1471 struct qeth_cmd_buffer *iob; 1472 struct qeth_card *card; 1473 int rc; 1474 1475 if (!dev) 1476 return -ENODEV; 1477 card = dev->ml_priv; 1478 if (!card) 1479 return -ENODEV; 1480 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1481 if (!qeth_card_hw_is_reachable(card)) 1482 return -ENODEV; 1483 iob = qeth_wait_for_buffer(&card->write); 1484 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1485 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1486 return rc; 1487 } 1488 EXPORT_SYMBOL(qeth_osn_assist); 1489 1490 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1491 int (*assist_cb)(struct net_device *, void *), 1492 int (*data_cb)(struct sk_buff *)) 1493 { 1494 struct qeth_card *card; 1495 1496 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1497 if (*dev == NULL) 1498 return -ENODEV; 1499 card = (*dev)->ml_priv; 1500 if (!card) 1501 return -ENODEV; 1502 QETH_CARD_TEXT(card, 2, "osnreg"); 1503 if ((assist_cb == NULL) || (data_cb == NULL)) 1504 return -EINVAL; 1505 card->osn_info.assist_cb = assist_cb; 1506 card->osn_info.data_cb = data_cb; 1507 return 0; 1508 } 1509 EXPORT_SYMBOL(qeth_osn_register); 1510 1511 void qeth_osn_deregister(struct net_device *dev) 1512 { 1513 struct qeth_card *card; 1514 1515 if (!dev) 1516 return; 1517 card = dev->ml_priv; 1518 if (!card) 1519 return; 1520 QETH_CARD_TEXT(card, 2, "osndereg"); 1521 card->osn_info.assist_cb = NULL; 1522 card->osn_info.data_cb = NULL; 1523 return; 1524 } 1525 EXPORT_SYMBOL(qeth_osn_deregister); 1526 1527 /* SETBRIDGEPORT support, async notifications */ 1528 1529 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1530 1531 /** 1532 * qeth_bridge_emit_host_event() - bridgeport address change notification 1533 * @card: qeth_card structure pointer, for udev events. 1534 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1535 * and reset token and addr_lnid are unused and may be NULL. 1536 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1537 * object, 0 - addition of an object. 1538 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1539 * @token: "network token" structure identifying physical address of the port. 1540 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1541 * 1542 * This function is called when registrations and deregistrations are 1543 * reported by the hardware, and also when notifications are enabled - 1544 * for all currently registered addresses. 1545 */ 1546 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1547 enum qeth_an_event_type evtype, 1548 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1549 { 1550 char str[7][32]; 1551 char *env[8]; 1552 int i = 0; 1553 1554 switch (evtype) { 1555 case anev_reg_unreg: 1556 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1557 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1558 ? "deregister" : "register"); 1559 env[i] = str[i]; i++; 1560 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1561 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1562 addr_lnid->lnid); 1563 env[i] = str[i]; i++; 1564 } 1565 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1566 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1567 addr_lnid->mac); 1568 env[i] = str[i]; i++; 1569 } 1570 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1571 token->cssid, token->ssid, token->devnum); 1572 env[i] = str[i]; i++; 1573 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1574 env[i] = str[i]; i++; 1575 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1576 token->chpid); 1577 env[i] = str[i]; i++; 1578 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1579 env[i] = str[i]; i++; 1580 break; 1581 case anev_abort: 1582 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1583 env[i] = str[i]; i++; 1584 break; 1585 case anev_reset: 1586 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1587 env[i] = str[i]; i++; 1588 break; 1589 } 1590 env[i] = NULL; 1591 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1592 } 1593 1594 struct qeth_bridge_state_data { 1595 struct work_struct worker; 1596 struct qeth_card *card; 1597 struct qeth_sbp_state_change qports; 1598 }; 1599 1600 static void qeth_bridge_state_change_worker(struct work_struct *work) 1601 { 1602 struct qeth_bridge_state_data *data = 1603 container_of(work, struct qeth_bridge_state_data, worker); 1604 /* We are only interested in the first entry - local port */ 1605 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1606 char env_locrem[32]; 1607 char env_role[32]; 1608 char env_state[32]; 1609 char *env[] = { 1610 env_locrem, 1611 env_role, 1612 env_state, 1613 NULL 1614 }; 1615 1616 /* Role should not change by itself, but if it did, */ 1617 /* information from the hardware is authoritative. */ 1618 mutex_lock(&data->card->conf_mutex); 1619 data->card->options.sbp.role = entry->role; 1620 mutex_unlock(&data->card->conf_mutex); 1621 1622 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1623 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1624 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1625 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1626 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1627 "<INVALID>"); 1628 snprintf(env_state, sizeof(env_state), "STATE=%s", 1629 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1630 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1631 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1632 "<INVALID>"); 1633 kobject_uevent_env(&data->card->gdev->dev.kobj, 1634 KOBJ_CHANGE, env); 1635 kfree(data); 1636 } 1637 1638 static void qeth_bridge_state_change(struct qeth_card *card, 1639 struct qeth_ipa_cmd *cmd) 1640 { 1641 struct qeth_sbp_state_change *qports = 1642 &cmd->data.sbp.data.state_change; 1643 struct qeth_bridge_state_data *data; 1644 int extrasize; 1645 1646 QETH_CARD_TEXT(card, 2, "brstchng"); 1647 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1648 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1649 return; 1650 } 1651 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1652 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1653 GFP_ATOMIC); 1654 if (!data) { 1655 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1656 return; 1657 } 1658 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1659 data->card = card; 1660 memcpy(&data->qports, qports, 1661 sizeof(struct qeth_sbp_state_change) + extrasize); 1662 queue_work(qeth_wq, &data->worker); 1663 } 1664 1665 struct qeth_bridge_host_data { 1666 struct work_struct worker; 1667 struct qeth_card *card; 1668 struct qeth_ipacmd_addr_change hostevs; 1669 }; 1670 1671 static void qeth_bridge_host_event_worker(struct work_struct *work) 1672 { 1673 struct qeth_bridge_host_data *data = 1674 container_of(work, struct qeth_bridge_host_data, worker); 1675 int i; 1676 1677 if (data->hostevs.lost_event_mask) { 1678 dev_info(&data->card->gdev->dev, 1679 "Address notification from the Bridge Port stopped %s (%s)\n", 1680 data->card->dev->name, 1681 (data->hostevs.lost_event_mask == 0x01) 1682 ? "Overflow" 1683 : (data->hostevs.lost_event_mask == 0x02) 1684 ? "Bridge port state change" 1685 : "Unknown reason"); 1686 mutex_lock(&data->card->conf_mutex); 1687 data->card->options.sbp.hostnotification = 0; 1688 mutex_unlock(&data->card->conf_mutex); 1689 qeth_bridge_emit_host_event(data->card, anev_abort, 1690 0, NULL, NULL); 1691 } else 1692 for (i = 0; i < data->hostevs.num_entries; i++) { 1693 struct qeth_ipacmd_addr_change_entry *entry = 1694 &data->hostevs.entry[i]; 1695 qeth_bridge_emit_host_event(data->card, 1696 anev_reg_unreg, 1697 entry->change_code, 1698 &entry->token, &entry->addr_lnid); 1699 } 1700 kfree(data); 1701 } 1702 1703 static void qeth_bridge_host_event(struct qeth_card *card, 1704 struct qeth_ipa_cmd *cmd) 1705 { 1706 struct qeth_ipacmd_addr_change *hostevs = 1707 &cmd->data.addrchange; 1708 struct qeth_bridge_host_data *data; 1709 int extrasize; 1710 1711 QETH_CARD_TEXT(card, 2, "brhostev"); 1712 if (cmd->hdr.return_code != 0x0000) { 1713 if (cmd->hdr.return_code == 0x0010) { 1714 if (hostevs->lost_event_mask == 0x00) 1715 hostevs->lost_event_mask = 0xff; 1716 } else { 1717 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1718 cmd->hdr.return_code); 1719 return; 1720 } 1721 } 1722 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1723 hostevs->num_entries; 1724 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1725 GFP_ATOMIC); 1726 if (!data) { 1727 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1728 return; 1729 } 1730 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1731 data->card = card; 1732 memcpy(&data->hostevs, hostevs, 1733 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1734 queue_work(qeth_wq, &data->worker); 1735 } 1736 1737 /* SETBRIDGEPORT support; sending commands */ 1738 1739 struct _qeth_sbp_cbctl { 1740 u16 ipa_rc; 1741 u16 cmd_rc; 1742 union { 1743 u32 supported; 1744 struct { 1745 enum qeth_sbp_roles *role; 1746 enum qeth_sbp_states *state; 1747 } qports; 1748 } data; 1749 }; 1750 1751 /** 1752 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1753 * @card: qeth_card structure pointer, for debug messages. 1754 * @cbctl: state structure with hardware return codes. 1755 * @setcmd: IPA command code 1756 * 1757 * Returns negative errno-compatible error indication or 0 on success. 1758 */ 1759 static int qeth_bridgeport_makerc(struct qeth_card *card, 1760 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1761 { 1762 int rc; 1763 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1764 1765 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1766 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1767 switch (cbctl->cmd_rc) { 1768 case 0x0000: 1769 rc = 0; 1770 break; 1771 case 0x2B04: 1772 case 0x0004: 1773 rc = -EOPNOTSUPP; 1774 break; 1775 case 0x2B0C: 1776 case 0x000C: /* Not configured as bridge Port */ 1777 rc = -ENODEV; /* maybe not the best code here? */ 1778 dev_err(&card->gdev->dev, 1779 "The device is not configured as a Bridge Port\n"); 1780 break; 1781 case 0x2B10: 1782 case 0x0010: /* OS mismatch */ 1783 rc = -EPERM; 1784 dev_err(&card->gdev->dev, 1785 "A Bridge Port is already configured by a different operating system\n"); 1786 break; 1787 case 0x2B14: 1788 case 0x0014: /* Another device is Primary */ 1789 switch (setcmd) { 1790 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1791 rc = -EEXIST; 1792 dev_err(&card->gdev->dev, 1793 "The LAN already has a primary Bridge Port\n"); 1794 break; 1795 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1796 rc = -EBUSY; 1797 dev_err(&card->gdev->dev, 1798 "The device is already a primary Bridge Port\n"); 1799 break; 1800 default: 1801 rc = -EIO; 1802 } 1803 break; 1804 case 0x2B18: 1805 case 0x0018: /* This device is currently Secondary */ 1806 rc = -EBUSY; 1807 dev_err(&card->gdev->dev, 1808 "The device is already a secondary Bridge Port\n"); 1809 break; 1810 case 0x2B1C: 1811 case 0x001C: /* Limit for Secondary devices reached */ 1812 rc = -EEXIST; 1813 dev_err(&card->gdev->dev, 1814 "The LAN cannot have more secondary Bridge Ports\n"); 1815 break; 1816 case 0x2B24: 1817 case 0x0024: /* This device is currently Primary */ 1818 rc = -EBUSY; 1819 dev_err(&card->gdev->dev, 1820 "The device is already a primary Bridge Port\n"); 1821 break; 1822 case 0x2B20: 1823 case 0x0020: /* Not authorized by zManager */ 1824 rc = -EACCES; 1825 dev_err(&card->gdev->dev, 1826 "The device is not authorized to be a Bridge Port\n"); 1827 break; 1828 default: 1829 rc = -EIO; 1830 } 1831 else 1832 switch (cbctl->ipa_rc) { 1833 case IPA_RC_NOTSUPP: 1834 rc = -EOPNOTSUPP; 1835 break; 1836 case IPA_RC_UNSUPPORTED_COMMAND: 1837 rc = -EOPNOTSUPP; 1838 break; 1839 default: 1840 rc = -EIO; 1841 } 1842 1843 if (rc) { 1844 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1845 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1846 } 1847 return rc; 1848 } 1849 1850 static inline int ipa_cmd_sbp(struct qeth_card *card) 1851 { 1852 return (card->info.type == QETH_CARD_TYPE_IQD) ? 1853 IPA_CMD_SETBRIDGEPORT_IQD : 1854 IPA_CMD_SETBRIDGEPORT_OSA; 1855 } 1856 1857 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1858 struct qeth_reply *reply, unsigned long data) 1859 { 1860 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1861 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1862 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1863 cbctl->ipa_rc = cmd->hdr.return_code; 1864 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1865 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1866 cbctl->data.supported = 1867 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1868 } else { 1869 cbctl->data.supported = 0; 1870 } 1871 return 0; 1872 } 1873 1874 /** 1875 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1876 * @card: qeth_card structure pointer. 1877 * 1878 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1879 * strucutre: card->options.sbp.supported_funcs. 1880 */ 1881 static void qeth_bridgeport_query_support(struct qeth_card *card) 1882 { 1883 struct qeth_cmd_buffer *iob; 1884 struct qeth_ipa_cmd *cmd; 1885 struct _qeth_sbp_cbctl cbctl; 1886 1887 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1888 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1889 if (!iob) 1890 return; 1891 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1892 cmd->data.sbp.hdr.cmdlength = 1893 sizeof(struct qeth_ipacmd_sbp_hdr) + 1894 sizeof(struct qeth_sbp_query_cmds_supp); 1895 cmd->data.sbp.hdr.command_code = 1896 IPA_SBP_QUERY_COMMANDS_SUPPORTED; 1897 cmd->data.sbp.hdr.used_total = 1; 1898 cmd->data.sbp.hdr.seq_no = 1; 1899 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1900 (void *)&cbctl) || 1901 qeth_bridgeport_makerc(card, &cbctl, 1902 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1903 /* non-zero makerc signifies failure, and produce messages */ 1904 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1905 return; 1906 } 1907 card->options.sbp.supported_funcs = cbctl.data.supported; 1908 } 1909 1910 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1911 struct qeth_reply *reply, unsigned long data) 1912 { 1913 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1914 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1915 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1916 1917 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1918 cbctl->ipa_rc = cmd->hdr.return_code; 1919 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1920 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1921 return 0; 1922 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1923 cbctl->cmd_rc = 0xffff; 1924 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1925 return 0; 1926 } 1927 /* first entry contains the state of the local port */ 1928 if (qports->num_entries > 0) { 1929 if (cbctl->data.qports.role) 1930 *cbctl->data.qports.role = qports->entry[0].role; 1931 if (cbctl->data.qports.state) 1932 *cbctl->data.qports.state = qports->entry[0].state; 1933 } 1934 return 0; 1935 } 1936 1937 /** 1938 * qeth_bridgeport_query_ports() - query local bridgeport status. 1939 * @card: qeth_card structure pointer. 1940 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1941 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1942 * 1943 * Returns negative errno-compatible error indication or 0 on success. 1944 * 1945 * 'role' and 'state' are not updated in case of hardware operation failure. 1946 */ 1947 int qeth_bridgeport_query_ports(struct qeth_card *card, 1948 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1949 { 1950 int rc = 0; 1951 struct qeth_cmd_buffer *iob; 1952 struct qeth_ipa_cmd *cmd; 1953 struct _qeth_sbp_cbctl cbctl = { 1954 .data = { 1955 .qports = { 1956 .role = role, 1957 .state = state, 1958 }, 1959 }, 1960 }; 1961 1962 QETH_CARD_TEXT(card, 2, "brqports"); 1963 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1964 return -EOPNOTSUPP; 1965 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1966 if (!iob) 1967 return -ENOMEM; 1968 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1969 cmd->data.sbp.hdr.cmdlength = 1970 sizeof(struct qeth_ipacmd_sbp_hdr); 1971 cmd->data.sbp.hdr.command_code = 1972 IPA_SBP_QUERY_BRIDGE_PORTS; 1973 cmd->data.sbp.hdr.used_total = 1; 1974 cmd->data.sbp.hdr.seq_no = 1; 1975 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1976 (void *)&cbctl); 1977 if (rc < 0) 1978 return rc; 1979 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1980 } 1981 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1982 1983 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1984 struct qeth_reply *reply, unsigned long data) 1985 { 1986 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1987 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1988 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1989 cbctl->ipa_rc = cmd->hdr.return_code; 1990 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1991 return 0; 1992 } 1993 1994 /** 1995 * qeth_bridgeport_setrole() - Assign primary role to the port. 1996 * @card: qeth_card structure pointer. 1997 * @role: Role to assign. 1998 * 1999 * Returns negative errno-compatible error indication or 0 on success. 2000 */ 2001 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 2002 { 2003 int rc = 0; 2004 int cmdlength; 2005 struct qeth_cmd_buffer *iob; 2006 struct qeth_ipa_cmd *cmd; 2007 struct _qeth_sbp_cbctl cbctl; 2008 enum qeth_ipa_sbp_cmd setcmd; 2009 2010 QETH_CARD_TEXT(card, 2, "brsetrol"); 2011 switch (role) { 2012 case QETH_SBP_ROLE_NONE: 2013 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 2014 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2015 sizeof(struct qeth_sbp_reset_role); 2016 break; 2017 case QETH_SBP_ROLE_PRIMARY: 2018 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 2019 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2020 sizeof(struct qeth_sbp_set_primary); 2021 break; 2022 case QETH_SBP_ROLE_SECONDARY: 2023 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 2024 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2025 sizeof(struct qeth_sbp_set_secondary); 2026 break; 2027 default: 2028 return -EINVAL; 2029 } 2030 if (!(card->options.sbp.supported_funcs & setcmd)) 2031 return -EOPNOTSUPP; 2032 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 2033 if (!iob) 2034 return -ENOMEM; 2035 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2036 cmd->data.sbp.hdr.cmdlength = cmdlength; 2037 cmd->data.sbp.hdr.command_code = setcmd; 2038 cmd->data.sbp.hdr.used_total = 1; 2039 cmd->data.sbp.hdr.seq_no = 1; 2040 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 2041 (void *)&cbctl); 2042 if (rc < 0) 2043 return rc; 2044 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 2045 } 2046 2047 /** 2048 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 2049 * @card: qeth_card structure pointer, for debug messages. 2050 * 2051 * Returns negative errno-compatible error indication or 0 on success. 2052 */ 2053 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 2054 { 2055 int rc; 2056 2057 if (pnso_rc == 0) 2058 switch (response) { 2059 case 0x0001: 2060 rc = 0; 2061 break; 2062 case 0x0004: 2063 case 0x0100: 2064 case 0x0106: 2065 rc = -EOPNOTSUPP; 2066 dev_err(&card->gdev->dev, 2067 "Setting address notification failed\n"); 2068 break; 2069 case 0x0107: 2070 rc = -EAGAIN; 2071 break; 2072 default: 2073 rc = -EIO; 2074 } 2075 else 2076 rc = -EIO; 2077 2078 if (rc) { 2079 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 2080 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 2081 } 2082 return rc; 2083 } 2084 2085 static void qeth_bridgeport_an_set_cb(void *priv, 2086 enum qdio_brinfo_entry_type type, void *entry) 2087 { 2088 struct qeth_card *card = (struct qeth_card *)priv; 2089 struct qdio_brinfo_entry_l2 *l2entry; 2090 u8 code; 2091 2092 if (type != l2_addr_lnid) { 2093 WARN_ON_ONCE(1); 2094 return; 2095 } 2096 2097 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 2098 code = IPA_ADDR_CHANGE_CODE_MACADDR; 2099 if (l2entry->addr_lnid.lnid) 2100 code |= IPA_ADDR_CHANGE_CODE_VLANID; 2101 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 2102 (struct net_if_token *)&l2entry->nit, 2103 (struct mac_addr_lnid *)&l2entry->addr_lnid); 2104 } 2105 2106 /** 2107 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 2108 * @card: qeth_card structure pointer. 2109 * @enable: 0 - disable, non-zero - enable notifications 2110 * 2111 * Returns negative errno-compatible error indication or 0 on success. 2112 * 2113 * On enable, emits a series of address notifications udev events for all 2114 * currently registered hosts. 2115 */ 2116 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2117 { 2118 int rc; 2119 u16 response; 2120 struct ccw_device *ddev; 2121 struct subchannel_id schid; 2122 2123 if (!card) 2124 return -EINVAL; 2125 if (!card->options.sbp.supported_funcs) 2126 return -EOPNOTSUPP; 2127 ddev = CARD_DDEV(card); 2128 ccw_device_get_schid(ddev, &schid); 2129 2130 if (enable) { 2131 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2132 rc = qdio_pnso_brinfo(schid, 1, &response, 2133 qeth_bridgeport_an_set_cb, card); 2134 } else 2135 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2136 return qeth_anset_makerc(card, rc, response); 2137 } 2138 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2139 2140 module_init(qeth_l2_init); 2141 module_exit(qeth_l2_exit); 2142 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2143 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2144 MODULE_LICENSE("GPL"); 2145