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 int qeth_l2_send_delmac(struct qeth_card *, __u8 *); 31 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *, 32 enum qeth_ipa_cmds); 33 static void qeth_l2_set_rx_mode(struct net_device *); 34 static int qeth_l2_recover(void *); 35 static void qeth_bridgeport_query_support(struct qeth_card *card); 36 static void qeth_bridge_state_change(struct qeth_card *card, 37 struct qeth_ipa_cmd *cmd); 38 static void qeth_bridge_host_event(struct qeth_card *card, 39 struct qeth_ipa_cmd *cmd); 40 41 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 42 { 43 struct qeth_card *card = dev->ml_priv; 44 struct mii_ioctl_data *mii_data; 45 int rc = 0; 46 47 if (!card) 48 return -ENODEV; 49 50 if (!qeth_card_hw_is_reachable(card)) 51 return -ENODEV; 52 53 if (card->info.type == QETH_CARD_TYPE_OSN) 54 return -EPERM; 55 56 switch (cmd) { 57 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 58 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 59 break; 60 case SIOC_QETH_GET_CARD_TYPE: 61 if ((card->info.type == QETH_CARD_TYPE_OSD || 62 card->info.type == QETH_CARD_TYPE_OSM || 63 card->info.type == QETH_CARD_TYPE_OSX) && 64 !card->info.guestlan) 65 return 1; 66 return 0; 67 break; 68 case SIOCGMIIPHY: 69 mii_data = if_mii(rq); 70 mii_data->phy_id = 0; 71 break; 72 case SIOCGMIIREG: 73 mii_data = if_mii(rq); 74 if (mii_data->phy_id != 0) 75 rc = -EINVAL; 76 else 77 mii_data->val_out = qeth_mdio_read(dev, 78 mii_data->phy_id, mii_data->reg_num); 79 break; 80 case SIOC_QETH_QUERY_OAT: 81 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 82 break; 83 default: 84 rc = -EOPNOTSUPP; 85 } 86 if (rc) 87 QETH_CARD_TEXT_(card, 2, "ioce%d", rc); 88 return rc; 89 } 90 91 static int qeth_l2_verify_dev(struct net_device *dev) 92 { 93 struct qeth_card *card; 94 unsigned long flags; 95 int rc = 0; 96 97 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 98 list_for_each_entry(card, &qeth_core_card_list.list, list) { 99 if (card->dev == dev) { 100 rc = QETH_REAL_CARD; 101 break; 102 } 103 } 104 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 105 106 return rc; 107 } 108 109 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 110 { 111 struct qeth_card *card; 112 struct net_device *ndev; 113 __u16 temp_dev_no; 114 unsigned long flags; 115 struct ccw_dev_id read_devid; 116 117 ndev = NULL; 118 memcpy(&temp_dev_no, read_dev_no, 2); 119 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 120 list_for_each_entry(card, &qeth_core_card_list.list, list) { 121 ccw_device_get_id(CARD_RDEV(card), &read_devid); 122 if (read_devid.devno == temp_dev_no) { 123 ndev = card->dev; 124 break; 125 } 126 } 127 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 128 return ndev; 129 } 130 131 static int qeth_setdel_makerc(struct qeth_card *card, int retcode) 132 { 133 int rc; 134 135 if (retcode) 136 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 137 switch (retcode) { 138 case IPA_RC_SUCCESS: 139 rc = 0; 140 break; 141 case IPA_RC_L2_UNSUPPORTED_CMD: 142 rc = -EOPNOTSUPP; 143 break; 144 case IPA_RC_L2_ADDR_TABLE_FULL: 145 rc = -ENOSPC; 146 break; 147 case IPA_RC_L2_DUP_MAC: 148 case IPA_RC_L2_DUP_LAYER3_MAC: 149 rc = -EEXIST; 150 break; 151 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 152 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 153 rc = -EPERM; 154 break; 155 case IPA_RC_L2_MAC_NOT_FOUND: 156 rc = -ENOENT; 157 break; 158 case -ENOMEM: 159 rc = -ENOMEM; 160 break; 161 default: 162 rc = -EIO; 163 break; 164 } 165 return rc; 166 } 167 168 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) 169 { 170 int rc; 171 172 QETH_CARD_TEXT(card, 2, "L2Sgmac"); 173 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac, 174 IPA_CMD_SETGMAC)); 175 if (rc == -EEXIST) 176 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n", 177 mac, QETH_CARD_IFNAME(card)); 178 else if (rc) 179 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n", 180 mac, QETH_CARD_IFNAME(card), rc); 181 return rc; 182 } 183 184 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) 185 { 186 int rc; 187 188 QETH_CARD_TEXT(card, 2, "L2Dgmac"); 189 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac, 190 IPA_CMD_DELGMAC)); 191 if (rc) 192 QETH_DBF_MESSAGE(2, 193 "Could not delete group MAC %pM on %s: %d\n", 194 mac, QETH_CARD_IFNAME(card), rc); 195 return rc; 196 } 197 198 static inline u32 qeth_l2_mac_hash(const u8 *addr) 199 { 200 return get_unaligned((u32 *)(&addr[2])); 201 } 202 203 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac) 204 { 205 206 int rc; 207 208 if (mac->is_uc) { 209 rc = qeth_setdel_makerc(card, 210 qeth_l2_send_setdelmac(card, mac->mac_addr, 211 IPA_CMD_SETVMAC)); 212 } else { 213 rc = qeth_setdel_makerc(card, 214 qeth_l2_send_setgroupmac(card, mac->mac_addr)); 215 } 216 return rc; 217 } 218 219 static void qeth_l2_del_all_macs(struct qeth_card *card, int del) 220 { 221 struct qeth_mac *mac; 222 struct hlist_node *tmp; 223 int i; 224 225 spin_lock_bh(&card->mclock); 226 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 227 if (del) { 228 if (mac->is_uc) 229 qeth_l2_send_setdelmac(card, mac->mac_addr, 230 IPA_CMD_DELVMAC); 231 else 232 qeth_l2_send_delgroupmac(card, mac->mac_addr); 233 } 234 hash_del(&mac->hnode); 235 kfree(mac); 236 } 237 spin_unlock_bh(&card->mclock); 238 } 239 240 static inline int qeth_l2_get_cast_type(struct qeth_card *card, 241 struct sk_buff *skb) 242 { 243 if (card->info.type == QETH_CARD_TYPE_OSN) 244 return RTN_UNSPEC; 245 if (is_broadcast_ether_addr(skb->data)) 246 return RTN_BROADCAST; 247 if (is_multicast_ether_addr(skb->data)) 248 return RTN_MULTICAST; 249 return RTN_UNSPEC; 250 } 251 252 static inline void qeth_l2_hdr_csum(struct qeth_card *card, 253 struct qeth_hdr *hdr, struct sk_buff *skb) 254 { 255 struct iphdr *iph = ip_hdr(skb); 256 257 /* tcph->check contains already the pseudo hdr checksum 258 * so just set the header flags 259 */ 260 if (iph->protocol == IPPROTO_UDP) 261 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; 262 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 263 QETH_HDR_EXT_CSUM_HDR_REQ; 264 iph->check = 0; 265 if (card->options.performance_stats) 266 card->perf_stats.tx_csum++; 267 } 268 269 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 270 struct sk_buff *skb, int cast_type) 271 { 272 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 273 274 memset(hdr, 0, sizeof(struct qeth_hdr)); 275 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 276 277 /* set byte byte 3 to casting flags */ 278 if (cast_type == RTN_MULTICAST) 279 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 280 else if (cast_type == RTN_BROADCAST) 281 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 282 else 283 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 284 285 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE; 286 /* VSWITCH relies on the VLAN 287 * information to be present in 288 * the QDIO header */ 289 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 290 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 291 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 292 } 293 } 294 295 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 296 struct qeth_reply *reply, unsigned long data) 297 { 298 struct qeth_ipa_cmd *cmd; 299 300 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 301 cmd = (struct qeth_ipa_cmd *) data; 302 if (cmd->hdr.return_code) { 303 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. " 304 "Continuing\n", cmd->data.setdelvlan.vlan_id, 305 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 306 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 307 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 308 } 309 return 0; 310 } 311 312 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 313 enum qeth_ipa_cmds ipacmd) 314 { 315 struct qeth_ipa_cmd *cmd; 316 struct qeth_cmd_buffer *iob; 317 318 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 319 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 320 if (!iob) 321 return -ENOMEM; 322 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 323 cmd->data.setdelvlan.vlan_id = i; 324 return qeth_send_ipa_cmd(card, iob, 325 qeth_l2_send_setdelvlan_cb, NULL); 326 } 327 328 static void qeth_l2_process_vlans(struct qeth_card *card) 329 { 330 struct qeth_vlan_vid *id; 331 QETH_CARD_TEXT(card, 3, "L2prcvln"); 332 spin_lock_bh(&card->vlanlock); 333 list_for_each_entry(id, &card->vid_list, list) { 334 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 335 } 336 spin_unlock_bh(&card->vlanlock); 337 } 338 339 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 340 __be16 proto, u16 vid) 341 { 342 struct qeth_card *card = dev->ml_priv; 343 struct qeth_vlan_vid *id; 344 int rc; 345 346 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 347 if (!vid) 348 return 0; 349 if (card->info.type == QETH_CARD_TYPE_OSM) { 350 QETH_CARD_TEXT(card, 3, "aidOSM"); 351 return 0; 352 } 353 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 354 QETH_CARD_TEXT(card, 3, "aidREC"); 355 return 0; 356 } 357 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 358 if (id) { 359 id->vid = vid; 360 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 361 if (rc) { 362 kfree(id); 363 return rc; 364 } 365 spin_lock_bh(&card->vlanlock); 366 list_add_tail(&id->list, &card->vid_list); 367 spin_unlock_bh(&card->vlanlock); 368 } else { 369 return -ENOMEM; 370 } 371 return 0; 372 } 373 374 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 375 __be16 proto, u16 vid) 376 { 377 struct qeth_vlan_vid *id, *tmpid = NULL; 378 struct qeth_card *card = dev->ml_priv; 379 int rc = 0; 380 381 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 382 if (card->info.type == QETH_CARD_TYPE_OSM) { 383 QETH_CARD_TEXT(card, 3, "kidOSM"); 384 return 0; 385 } 386 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 387 QETH_CARD_TEXT(card, 3, "kidREC"); 388 return 0; 389 } 390 spin_lock_bh(&card->vlanlock); 391 list_for_each_entry(id, &card->vid_list, list) { 392 if (id->vid == vid) { 393 list_del(&id->list); 394 tmpid = id; 395 break; 396 } 397 } 398 spin_unlock_bh(&card->vlanlock); 399 if (tmpid) { 400 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 401 kfree(tmpid); 402 } 403 qeth_l2_set_rx_mode(card->dev); 404 return rc; 405 } 406 407 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 408 { 409 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 410 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 411 412 qeth_set_allowed_threads(card, 0, 1); 413 if (card->read.state == CH_STATE_UP && 414 card->write.state == CH_STATE_UP && 415 (card->state == CARD_STATE_UP)) { 416 if (recovery_mode && 417 card->info.type != QETH_CARD_TYPE_OSN) { 418 qeth_l2_stop(card->dev); 419 } else { 420 rtnl_lock(); 421 dev_close(card->dev); 422 rtnl_unlock(); 423 } 424 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 425 card->state = CARD_STATE_SOFTSETUP; 426 } 427 if (card->state == CARD_STATE_SOFTSETUP) { 428 qeth_l2_del_all_macs(card, 0); 429 qeth_clear_ipacmd_list(card); 430 card->state = CARD_STATE_HARDSETUP; 431 } 432 if (card->state == CARD_STATE_HARDSETUP) { 433 qeth_qdio_clear_card(card, 0); 434 qeth_clear_qdio_buffers(card); 435 qeth_clear_working_pool_list(card); 436 card->state = CARD_STATE_DOWN; 437 } 438 if (card->state == CARD_STATE_DOWN) { 439 qeth_clear_cmd_buffers(&card->read); 440 qeth_clear_cmd_buffers(&card->write); 441 } 442 } 443 444 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 445 int budget, int *done) 446 { 447 int work_done = 0; 448 struct sk_buff *skb; 449 struct qeth_hdr *hdr; 450 unsigned int len; 451 452 *done = 0; 453 WARN_ON_ONCE(!budget); 454 while (budget) { 455 skb = qeth_core_get_next_skb(card, 456 &card->qdio.in_q->bufs[card->rx.b_index], 457 &card->rx.b_element, &card->rx.e_offset, &hdr); 458 if (!skb) { 459 *done = 1; 460 break; 461 } 462 skb->dev = card->dev; 463 switch (hdr->hdr.l2.id) { 464 case QETH_HEADER_TYPE_LAYER2: 465 skb->pkt_type = PACKET_HOST; 466 skb->protocol = eth_type_trans(skb, skb->dev); 467 if ((card->dev->features & NETIF_F_RXCSUM) 468 && ((hdr->hdr.l2.flags[1] & 469 (QETH_HDR_EXT_CSUM_HDR_REQ | 470 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 471 (QETH_HDR_EXT_CSUM_HDR_REQ | 472 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 473 skb->ip_summed = CHECKSUM_UNNECESSARY; 474 else 475 skb->ip_summed = CHECKSUM_NONE; 476 if (skb->protocol == htons(ETH_P_802_2)) 477 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 478 len = skb->len; 479 napi_gro_receive(&card->napi, skb); 480 break; 481 case QETH_HEADER_TYPE_OSN: 482 if (card->info.type == QETH_CARD_TYPE_OSN) { 483 skb_push(skb, sizeof(struct qeth_hdr)); 484 skb_copy_to_linear_data(skb, hdr, 485 sizeof(struct qeth_hdr)); 486 len = skb->len; 487 card->osn_info.data_cb(skb); 488 break; 489 } 490 /* else unknown */ 491 default: 492 dev_kfree_skb_any(skb); 493 QETH_CARD_TEXT(card, 3, "inbunkno"); 494 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 495 continue; 496 } 497 work_done++; 498 budget--; 499 card->stats.rx_packets++; 500 card->stats.rx_bytes += len; 501 } 502 return work_done; 503 } 504 505 static int qeth_l2_poll(struct napi_struct *napi, int budget) 506 { 507 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 508 int work_done = 0; 509 struct qeth_qdio_buffer *buffer; 510 int done; 511 int new_budget = budget; 512 513 if (card->options.performance_stats) { 514 card->perf_stats.inbound_cnt++; 515 card->perf_stats.inbound_start_time = qeth_get_micros(); 516 } 517 518 while (1) { 519 if (!card->rx.b_count) { 520 card->rx.qdio_err = 0; 521 card->rx.b_count = qdio_get_next_buffers( 522 card->data.ccwdev, 0, &card->rx.b_index, 523 &card->rx.qdio_err); 524 if (card->rx.b_count <= 0) { 525 card->rx.b_count = 0; 526 break; 527 } 528 card->rx.b_element = 529 &card->qdio.in_q->bufs[card->rx.b_index] 530 .buffer->element[0]; 531 card->rx.e_offset = 0; 532 } 533 534 while (card->rx.b_count) { 535 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 536 if (!(card->rx.qdio_err && 537 qeth_check_qdio_errors(card, buffer->buffer, 538 card->rx.qdio_err, "qinerr"))) 539 work_done += qeth_l2_process_inbound_buffer( 540 card, new_budget, &done); 541 else 542 done = 1; 543 544 if (done) { 545 if (card->options.performance_stats) 546 card->perf_stats.bufs_rec++; 547 qeth_put_buffer_pool_entry(card, 548 buffer->pool_entry); 549 qeth_queue_input_buffer(card, card->rx.b_index); 550 card->rx.b_count--; 551 if (card->rx.b_count) { 552 card->rx.b_index = 553 (card->rx.b_index + 1) % 554 QDIO_MAX_BUFFERS_PER_Q; 555 card->rx.b_element = 556 &card->qdio.in_q 557 ->bufs[card->rx.b_index] 558 .buffer->element[0]; 559 card->rx.e_offset = 0; 560 } 561 } 562 563 if (work_done >= budget) 564 goto out; 565 else 566 new_budget = budget - work_done; 567 } 568 } 569 570 napi_complete(napi); 571 if (qdio_start_irq(card->data.ccwdev, 0)) 572 napi_schedule(&card->napi); 573 out: 574 if (card->options.performance_stats) 575 card->perf_stats.inbound_time += qeth_get_micros() - 576 card->perf_stats.inbound_start_time; 577 return work_done; 578 } 579 580 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 581 enum qeth_ipa_cmds ipacmd) 582 { 583 struct qeth_ipa_cmd *cmd; 584 struct qeth_cmd_buffer *iob; 585 586 QETH_CARD_TEXT(card, 2, "L2sdmac"); 587 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 588 if (!iob) 589 return -ENOMEM; 590 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 591 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 592 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 593 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 594 } 595 596 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 597 { 598 int rc; 599 600 QETH_CARD_TEXT(card, 2, "L2Setmac"); 601 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac, 602 IPA_CMD_SETVMAC)); 603 if (rc == 0) { 604 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 605 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN); 606 dev_info(&card->gdev->dev, 607 "MAC address %pM successfully registered on device %s\n", 608 card->dev->dev_addr, card->dev->name); 609 } else { 610 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 611 switch (rc) { 612 case -EEXIST: 613 dev_warn(&card->gdev->dev, 614 "MAC address %pM already exists\n", mac); 615 break; 616 case -EPERM: 617 dev_warn(&card->gdev->dev, 618 "MAC address %pM is not authorized\n", mac); 619 break; 620 } 621 } 622 return rc; 623 } 624 625 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 626 { 627 int rc; 628 629 QETH_CARD_TEXT(card, 2, "L2Delmac"); 630 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 631 return 0; 632 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac, 633 IPA_CMD_DELVMAC)); 634 if (rc == 0) 635 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 636 return rc; 637 } 638 639 static int qeth_l2_request_initial_mac(struct qeth_card *card) 640 { 641 int rc = 0; 642 char vendor_pre[] = {0x02, 0x00, 0x00}; 643 644 QETH_DBF_TEXT(SETUP, 2, "doL2init"); 645 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 646 647 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 648 rc = qeth_query_setadapterparms(card); 649 if (rc) { 650 QETH_DBF_MESSAGE(2, "could not query adapter " 651 "parameters on device %s: x%x\n", 652 CARD_BUS_ID(card), rc); 653 } 654 } 655 656 if (card->info.type == QETH_CARD_TYPE_IQD || 657 card->info.type == QETH_CARD_TYPE_OSM || 658 card->info.type == QETH_CARD_TYPE_OSX || 659 card->info.guestlan) { 660 rc = qeth_setadpparms_change_macaddr(card); 661 if (rc) { 662 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 663 "device %s: x%x\n", CARD_BUS_ID(card), rc); 664 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 665 return rc; 666 } 667 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN); 668 } else { 669 eth_random_addr(card->dev->dev_addr); 670 memcpy(card->dev->dev_addr, vendor_pre, 3); 671 } 672 return 0; 673 } 674 675 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 676 { 677 struct sockaddr *addr = p; 678 struct qeth_card *card = dev->ml_priv; 679 int rc = 0; 680 681 QETH_CARD_TEXT(card, 3, "setmac"); 682 683 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { 684 QETH_CARD_TEXT(card, 3, "setmcINV"); 685 return -EOPNOTSUPP; 686 } 687 688 if (card->info.type == QETH_CARD_TYPE_OSN || 689 card->info.type == QETH_CARD_TYPE_OSM || 690 card->info.type == QETH_CARD_TYPE_OSX) { 691 QETH_CARD_TEXT(card, 3, "setmcTYP"); 692 return -EOPNOTSUPP; 693 } 694 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN); 695 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 696 QETH_CARD_TEXT(card, 3, "setmcREC"); 697 return -ERESTARTSYS; 698 } 699 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 700 if (!rc || (rc == -ENOENT)) 701 rc = qeth_l2_send_setmac(card, addr->sa_data); 702 return rc ? -EINVAL : 0; 703 } 704 705 static void qeth_promisc_to_bridge(struct qeth_card *card) 706 { 707 struct net_device *dev = card->dev; 708 enum qeth_ipa_promisc_modes promisc_mode; 709 int role; 710 int rc; 711 712 QETH_CARD_TEXT(card, 3, "pmisc2br"); 713 714 if (!card->options.sbp.reflect_promisc) 715 return; 716 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 717 : SET_PROMISC_MODE_OFF; 718 if (promisc_mode == card->info.promisc_mode) 719 return; 720 721 if (promisc_mode == SET_PROMISC_MODE_ON) { 722 if (card->options.sbp.reflect_promisc_primary) 723 role = QETH_SBP_ROLE_PRIMARY; 724 else 725 role = QETH_SBP_ROLE_SECONDARY; 726 } else 727 role = QETH_SBP_ROLE_NONE; 728 729 rc = qeth_bridgeport_setrole(card, role); 730 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 731 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 732 if (!rc) { 733 card->options.sbp.role = role; 734 card->info.promisc_mode = promisc_mode; 735 } 736 737 } 738 /* New MAC address is added to the hash table and marked to be written on card 739 * only if there is not in the hash table storage already 740 * 741 */ 742 static void 743 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc) 744 { 745 struct qeth_mac *mac; 746 747 hash_for_each_possible(card->mac_htable, mac, hnode, 748 qeth_l2_mac_hash(ha->addr)) { 749 if (is_uc == mac->is_uc && 750 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) { 751 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 752 return; 753 } 754 } 755 756 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 757 758 if (!mac) 759 return; 760 761 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN); 762 mac->is_uc = is_uc; 763 mac->disp_flag = QETH_DISP_ADDR_ADD; 764 765 hash_add(card->mac_htable, &mac->hnode, 766 qeth_l2_mac_hash(mac->mac_addr)); 767 768 } 769 770 static void qeth_l2_set_rx_mode(struct net_device *dev) 771 { 772 struct qeth_card *card = dev->ml_priv; 773 struct netdev_hw_addr *ha; 774 struct qeth_mac *mac; 775 struct hlist_node *tmp; 776 int i; 777 int rc; 778 779 if (card->info.type == QETH_CARD_TYPE_OSN) 780 return; 781 782 QETH_CARD_TEXT(card, 3, "setmulti"); 783 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 784 (card->state != CARD_STATE_UP)) 785 return; 786 787 spin_lock_bh(&card->mclock); 788 789 netdev_for_each_mc_addr(ha, dev) 790 qeth_l2_add_mac(card, ha, 0); 791 792 netdev_for_each_uc_addr(ha, dev) 793 qeth_l2_add_mac(card, ha, 1); 794 795 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 796 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) { 797 if (!mac->is_uc) 798 rc = qeth_l2_send_delgroupmac(card, 799 mac->mac_addr); 800 else { 801 rc = qeth_l2_send_setdelmac(card, mac->mac_addr, 802 IPA_CMD_DELVMAC); 803 } 804 805 hash_del(&mac->hnode); 806 kfree(mac); 807 808 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) { 809 rc = qeth_l2_write_mac(card, mac); 810 if (rc) { 811 hash_del(&mac->hnode); 812 kfree(mac); 813 } else 814 mac->disp_flag = QETH_DISP_ADDR_DELETE; 815 } else 816 mac->disp_flag = QETH_DISP_ADDR_DELETE; 817 } 818 819 spin_unlock_bh(&card->mclock); 820 821 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 822 qeth_setadp_promisc_mode(card); 823 else 824 qeth_promisc_to_bridge(card); 825 } 826 827 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 828 { 829 int rc; 830 struct qeth_hdr *hdr = NULL; 831 int elements = 0; 832 struct qeth_card *card = dev->ml_priv; 833 struct sk_buff *new_skb = skb; 834 int cast_type = qeth_l2_get_cast_type(card, skb); 835 struct qeth_qdio_out_q *queue; 836 int tx_bytes = skb->len; 837 int data_offset = -1; 838 int elements_needed = 0; 839 int hd_len = 0; 840 int nr_frags; 841 842 if (card->qdio.do_prio_queueing || (cast_type && 843 card->info.is_multicast_different)) 844 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 845 qeth_get_ip_version(skb), cast_type)]; 846 else 847 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 848 849 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 850 card->stats.tx_carrier_errors++; 851 goto tx_drop; 852 } 853 854 if ((card->info.type == QETH_CARD_TYPE_OSN) && 855 (skb->protocol == htons(ETH_P_IPV6))) 856 goto tx_drop; 857 858 if (card->options.performance_stats) { 859 card->perf_stats.outbound_cnt++; 860 card->perf_stats.outbound_start_time = qeth_get_micros(); 861 } 862 netif_stop_queue(dev); 863 864 /* fix hardware limitation: as long as we do not have sbal 865 * chaining we can not send long frag lists 866 */ 867 if ((card->info.type != QETH_CARD_TYPE_IQD) && 868 !qeth_get_elements_no(card, new_skb, 0)) { 869 int lin_rc = skb_linearize(new_skb); 870 871 if (card->options.performance_stats) { 872 if (lin_rc) 873 card->perf_stats.tx_linfail++; 874 else 875 card->perf_stats.tx_lin++; 876 } 877 if (lin_rc) 878 goto tx_drop; 879 } 880 881 if (card->info.type == QETH_CARD_TYPE_OSN) 882 hdr = (struct qeth_hdr *)skb->data; 883 else { 884 if (card->info.type == QETH_CARD_TYPE_IQD) { 885 new_skb = skb; 886 data_offset = ETH_HLEN; 887 hd_len = ETH_HLEN; 888 hdr = kmem_cache_alloc(qeth_core_header_cache, 889 GFP_ATOMIC); 890 if (!hdr) 891 goto tx_drop; 892 elements_needed++; 893 skb_reset_mac_header(new_skb); 894 qeth_l2_fill_header(card, hdr, new_skb, cast_type); 895 hdr->hdr.l2.pkt_length = new_skb->len; 896 memcpy(((char *)hdr) + sizeof(struct qeth_hdr), 897 skb_mac_header(new_skb), ETH_HLEN); 898 } else { 899 /* create a clone with writeable headroom */ 900 new_skb = skb_realloc_headroom(skb, 901 sizeof(struct qeth_hdr)); 902 if (!new_skb) 903 goto tx_drop; 904 hdr = (struct qeth_hdr *)skb_push(new_skb, 905 sizeof(struct qeth_hdr)); 906 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr)); 907 qeth_l2_fill_header(card, hdr, new_skb, cast_type); 908 if (new_skb->ip_summed == CHECKSUM_PARTIAL) 909 qeth_l2_hdr_csum(card, hdr, new_skb); 910 } 911 } 912 913 elements = qeth_get_elements_no(card, new_skb, elements_needed); 914 if (!elements) { 915 if (data_offset >= 0) 916 kmem_cache_free(qeth_core_header_cache, hdr); 917 goto tx_drop; 918 } 919 920 if (card->info.type != QETH_CARD_TYPE_IQD) { 921 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, 922 sizeof(struct qeth_hdr_layer2))) 923 goto tx_drop; 924 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 925 elements); 926 } else 927 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 928 elements, data_offset, hd_len); 929 if (!rc) { 930 card->stats.tx_packets++; 931 card->stats.tx_bytes += tx_bytes; 932 if (card->options.performance_stats) { 933 nr_frags = skb_shinfo(new_skb)->nr_frags; 934 if (nr_frags) { 935 card->perf_stats.sg_skbs_sent++; 936 /* nr_frags + skb->data */ 937 card->perf_stats.sg_frags_sent += nr_frags + 1; 938 } 939 } 940 if (new_skb != skb) 941 dev_kfree_skb_any(skb); 942 rc = NETDEV_TX_OK; 943 } else { 944 if (data_offset >= 0) 945 kmem_cache_free(qeth_core_header_cache, hdr); 946 947 if (rc == -EBUSY) { 948 if (new_skb != skb) 949 dev_kfree_skb_any(new_skb); 950 return NETDEV_TX_BUSY; 951 } else 952 goto tx_drop; 953 } 954 955 netif_wake_queue(dev); 956 if (card->options.performance_stats) 957 card->perf_stats.outbound_time += qeth_get_micros() - 958 card->perf_stats.outbound_start_time; 959 return rc; 960 961 tx_drop: 962 card->stats.tx_dropped++; 963 card->stats.tx_errors++; 964 if ((new_skb != skb) && new_skb) 965 dev_kfree_skb_any(new_skb); 966 dev_kfree_skb_any(skb); 967 netif_wake_queue(dev); 968 return NETDEV_TX_OK; 969 } 970 971 static int __qeth_l2_open(struct net_device *dev) 972 { 973 struct qeth_card *card = dev->ml_priv; 974 int rc = 0; 975 976 QETH_CARD_TEXT(card, 4, "qethopen"); 977 if (card->state == CARD_STATE_UP) 978 return rc; 979 if (card->state != CARD_STATE_SOFTSETUP) 980 return -ENODEV; 981 982 if ((card->info.type != QETH_CARD_TYPE_OSN) && 983 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 984 QETH_CARD_TEXT(card, 4, "nomacadr"); 985 return -EPERM; 986 } 987 card->data.state = CH_STATE_UP; 988 card->state = CARD_STATE_UP; 989 netif_start_queue(dev); 990 991 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 992 napi_enable(&card->napi); 993 napi_schedule(&card->napi); 994 } else 995 rc = -EIO; 996 return rc; 997 } 998 999 static int qeth_l2_open(struct net_device *dev) 1000 { 1001 struct qeth_card *card = dev->ml_priv; 1002 1003 QETH_CARD_TEXT(card, 5, "qethope_"); 1004 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 1005 QETH_CARD_TEXT(card, 3, "openREC"); 1006 return -ERESTARTSYS; 1007 } 1008 return __qeth_l2_open(dev); 1009 } 1010 1011 static int qeth_l2_stop(struct net_device *dev) 1012 { 1013 struct qeth_card *card = dev->ml_priv; 1014 1015 QETH_CARD_TEXT(card, 4, "qethstop"); 1016 netif_tx_disable(dev); 1017 if (card->state == CARD_STATE_UP) { 1018 card->state = CARD_STATE_SOFTSETUP; 1019 napi_disable(&card->napi); 1020 } 1021 return 0; 1022 } 1023 1024 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 1025 { 1026 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1027 1028 qeth_l2_create_device_attributes(&gdev->dev); 1029 INIT_LIST_HEAD(&card->vid_list); 1030 hash_init(card->mac_htable); 1031 card->options.layer2 = 1; 1032 card->info.hwtrap = 0; 1033 return 0; 1034 } 1035 1036 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 1037 { 1038 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1039 1040 qeth_l2_remove_device_attributes(&cgdev->dev); 1041 qeth_set_allowed_threads(card, 0, 1); 1042 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1043 1044 if (cgdev->state == CCWGROUP_ONLINE) 1045 qeth_l2_set_offline(cgdev); 1046 1047 if (card->dev) { 1048 netif_napi_del(&card->napi); 1049 unregister_netdev(card->dev); 1050 card->dev = NULL; 1051 } 1052 return; 1053 } 1054 1055 static const struct ethtool_ops qeth_l2_ethtool_ops = { 1056 .get_link = ethtool_op_get_link, 1057 .get_strings = qeth_core_get_strings, 1058 .get_ethtool_stats = qeth_core_get_ethtool_stats, 1059 .get_sset_count = qeth_core_get_sset_count, 1060 .get_drvinfo = qeth_core_get_drvinfo, 1061 .get_settings = qeth_core_ethtool_get_settings, 1062 }; 1063 1064 static const struct ethtool_ops qeth_l2_osn_ops = { 1065 .get_strings = qeth_core_get_strings, 1066 .get_ethtool_stats = qeth_core_get_ethtool_stats, 1067 .get_sset_count = qeth_core_get_sset_count, 1068 .get_drvinfo = qeth_core_get_drvinfo, 1069 }; 1070 1071 static const struct net_device_ops qeth_l2_netdev_ops = { 1072 .ndo_open = qeth_l2_open, 1073 .ndo_stop = qeth_l2_stop, 1074 .ndo_get_stats = qeth_get_stats, 1075 .ndo_start_xmit = qeth_l2_hard_start_xmit, 1076 .ndo_validate_addr = eth_validate_addr, 1077 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 1078 .ndo_do_ioctl = qeth_l2_do_ioctl, 1079 .ndo_set_mac_address = qeth_l2_set_mac_address, 1080 .ndo_change_mtu = qeth_change_mtu, 1081 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 1082 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 1083 .ndo_tx_timeout = qeth_tx_timeout, 1084 .ndo_fix_features = qeth_fix_features, 1085 .ndo_set_features = qeth_set_features 1086 }; 1087 1088 static int qeth_l2_setup_netdev(struct qeth_card *card) 1089 { 1090 switch (card->info.type) { 1091 case QETH_CARD_TYPE_IQD: 1092 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 1093 ether_setup); 1094 break; 1095 case QETH_CARD_TYPE_OSN: 1096 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 1097 ether_setup); 1098 card->dev->flags |= IFF_NOARP; 1099 break; 1100 default: 1101 card->dev = alloc_etherdev(0); 1102 } 1103 1104 if (!card->dev) 1105 return -ENODEV; 1106 1107 card->dev->ml_priv = card; 1108 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 1109 card->dev->mtu = card->info.initial_mtu; 1110 card->dev->netdev_ops = &qeth_l2_netdev_ops; 1111 card->dev->ethtool_ops = 1112 (card->info.type != QETH_CARD_TYPE_OSN) ? 1113 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops; 1114 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 1115 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 1116 card->dev->hw_features = NETIF_F_SG; 1117 card->dev->vlan_features = NETIF_F_SG; 1118 /* OSA 3S and earlier has no RX/TX support */ 1119 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 1120 card->dev->hw_features |= NETIF_F_IP_CSUM; 1121 card->dev->vlan_features |= NETIF_F_IP_CSUM; 1122 } 1123 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 1124 card->dev->hw_features |= NETIF_F_RXCSUM; 1125 card->dev->vlan_features |= NETIF_F_RXCSUM; 1126 } 1127 /* Turn on SG per default */ 1128 card->dev->features |= NETIF_F_SG; 1129 } 1130 card->info.broadcast_capable = 1; 1131 qeth_l2_request_initial_mac(card); 1132 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) * 1133 PAGE_SIZE; 1134 card->dev->gso_max_segs = (QETH_MAX_BUFFER_ELEMENTS(card) - 1); 1135 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1136 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT); 1137 netif_carrier_off(card->dev); 1138 return register_netdev(card->dev); 1139 } 1140 1141 static int qeth_l2_start_ipassists(struct qeth_card *card) 1142 { 1143 /* configure isolation level */ 1144 if (qeth_set_access_ctrl_online(card, 0)) 1145 return -ENODEV; 1146 return 0; 1147 } 1148 1149 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1150 { 1151 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1152 int rc = 0; 1153 enum qeth_card_states recover_flag; 1154 1155 mutex_lock(&card->discipline_mutex); 1156 mutex_lock(&card->conf_mutex); 1157 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1158 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1159 1160 recover_flag = card->state; 1161 rc = qeth_core_hardsetup_card(card); 1162 if (rc) { 1163 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1164 rc = -ENODEV; 1165 goto out_remove; 1166 } 1167 qeth_bridgeport_query_support(card); 1168 if (card->options.sbp.supported_funcs) 1169 dev_info(&card->gdev->dev, 1170 "The device represents a Bridge Capable Port\n"); 1171 qeth_trace_features(card); 1172 1173 if (!card->dev && qeth_l2_setup_netdev(card)) { 1174 rc = -ENODEV; 1175 goto out_remove; 1176 } 1177 1178 if (card->info.type != QETH_CARD_TYPE_OSN) 1179 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1180 1181 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1182 if (card->info.hwtrap && 1183 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1184 card->info.hwtrap = 0; 1185 } else 1186 card->info.hwtrap = 0; 1187 1188 qeth_l2_setup_bridgeport_attrs(card); 1189 1190 card->state = CARD_STATE_HARDSETUP; 1191 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1192 qeth_print_status_message(card); 1193 1194 /* softsetup */ 1195 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1196 1197 rc = qeth_send_startlan(card); 1198 if (rc) { 1199 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1200 if (rc == 0xe080) { 1201 dev_warn(&card->gdev->dev, 1202 "The LAN is offline\n"); 1203 card->lan_online = 0; 1204 goto contin; 1205 } 1206 rc = -ENODEV; 1207 goto out_remove; 1208 } else 1209 card->lan_online = 1; 1210 1211 contin: 1212 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1213 (card->info.type == QETH_CARD_TYPE_OSX)) { 1214 rc = qeth_l2_start_ipassists(card); 1215 if (rc) 1216 goto out_remove; 1217 } 1218 1219 if (card->info.type != QETH_CARD_TYPE_OSN && 1220 card->info.type != QETH_CARD_TYPE_OSM) 1221 qeth_l2_process_vlans(card); 1222 1223 netif_tx_disable(card->dev); 1224 1225 rc = qeth_init_qdio_queues(card); 1226 if (rc) { 1227 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1228 rc = -ENODEV; 1229 goto out_remove; 1230 } 1231 card->state = CARD_STATE_SOFTSETUP; 1232 if (card->lan_online) 1233 netif_carrier_on(card->dev); 1234 else 1235 netif_carrier_off(card->dev); 1236 1237 qeth_set_allowed_threads(card, 0xffffffff, 0); 1238 if (recover_flag == CARD_STATE_RECOVER) { 1239 if (recovery_mode && 1240 card->info.type != QETH_CARD_TYPE_OSN) { 1241 __qeth_l2_open(card->dev); 1242 } else { 1243 rtnl_lock(); 1244 dev_open(card->dev); 1245 rtnl_unlock(); 1246 } 1247 /* this also sets saved unicast addresses */ 1248 qeth_l2_set_rx_mode(card->dev); 1249 } 1250 /* let user_space know that device is online */ 1251 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1252 mutex_unlock(&card->conf_mutex); 1253 mutex_unlock(&card->discipline_mutex); 1254 return 0; 1255 1256 out_remove: 1257 qeth_l2_stop_card(card, 0); 1258 ccw_device_set_offline(CARD_DDEV(card)); 1259 ccw_device_set_offline(CARD_WDEV(card)); 1260 ccw_device_set_offline(CARD_RDEV(card)); 1261 qdio_free(CARD_DDEV(card)); 1262 if (recover_flag == CARD_STATE_RECOVER) 1263 card->state = CARD_STATE_RECOVER; 1264 else 1265 card->state = CARD_STATE_DOWN; 1266 mutex_unlock(&card->conf_mutex); 1267 mutex_unlock(&card->discipline_mutex); 1268 return rc; 1269 } 1270 1271 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1272 { 1273 return __qeth_l2_set_online(gdev, 0); 1274 } 1275 1276 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1277 int recovery_mode) 1278 { 1279 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1280 int rc = 0, rc2 = 0, rc3 = 0; 1281 enum qeth_card_states recover_flag; 1282 1283 mutex_lock(&card->discipline_mutex); 1284 mutex_lock(&card->conf_mutex); 1285 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1286 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1287 1288 if (card->dev && netif_carrier_ok(card->dev)) 1289 netif_carrier_off(card->dev); 1290 recover_flag = card->state; 1291 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1292 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1293 card->info.hwtrap = 1; 1294 } 1295 qeth_l2_stop_card(card, recovery_mode); 1296 rc = ccw_device_set_offline(CARD_DDEV(card)); 1297 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1298 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1299 if (!rc) 1300 rc = (rc2) ? rc2 : rc3; 1301 if (rc) 1302 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1303 qdio_free(CARD_DDEV(card)); 1304 if (recover_flag == CARD_STATE_UP) 1305 card->state = CARD_STATE_RECOVER; 1306 /* let user_space know that device is offline */ 1307 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1308 mutex_unlock(&card->conf_mutex); 1309 mutex_unlock(&card->discipline_mutex); 1310 return 0; 1311 } 1312 1313 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1314 { 1315 return __qeth_l2_set_offline(cgdev, 0); 1316 } 1317 1318 static int qeth_l2_recover(void *ptr) 1319 { 1320 struct qeth_card *card; 1321 int rc = 0; 1322 1323 card = (struct qeth_card *) ptr; 1324 QETH_CARD_TEXT(card, 2, "recover1"); 1325 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1326 return 0; 1327 QETH_CARD_TEXT(card, 2, "recover2"); 1328 dev_warn(&card->gdev->dev, 1329 "A recovery process has been started for the device\n"); 1330 qeth_set_recovery_task(card); 1331 __qeth_l2_set_offline(card->gdev, 1); 1332 rc = __qeth_l2_set_online(card->gdev, 1); 1333 if (!rc) 1334 dev_info(&card->gdev->dev, 1335 "Device successfully recovered!\n"); 1336 else { 1337 qeth_close_dev(card); 1338 dev_warn(&card->gdev->dev, "The qeth device driver " 1339 "failed to recover an error on the device\n"); 1340 } 1341 qeth_clear_recovery_task(card); 1342 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1343 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1344 return 0; 1345 } 1346 1347 static int __init qeth_l2_init(void) 1348 { 1349 pr_info("register layer 2 discipline\n"); 1350 return 0; 1351 } 1352 1353 static void __exit qeth_l2_exit(void) 1354 { 1355 pr_info("unregister layer 2 discipline\n"); 1356 } 1357 1358 static void qeth_l2_shutdown(struct ccwgroup_device *gdev) 1359 { 1360 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1361 qeth_set_allowed_threads(card, 0, 1); 1362 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 1363 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1364 qeth_qdio_clear_card(card, 0); 1365 qeth_clear_qdio_buffers(card); 1366 qdio_free(CARD_DDEV(card)); 1367 } 1368 1369 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1370 { 1371 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1372 1373 if (card->dev) 1374 netif_device_detach(card->dev); 1375 qeth_set_allowed_threads(card, 0, 1); 1376 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1377 if (gdev->state == CCWGROUP_OFFLINE) 1378 return 0; 1379 if (card->state == CARD_STATE_UP) { 1380 if (card->info.hwtrap) 1381 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1382 __qeth_l2_set_offline(card->gdev, 1); 1383 } else 1384 __qeth_l2_set_offline(card->gdev, 0); 1385 return 0; 1386 } 1387 1388 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1389 { 1390 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1391 int rc = 0; 1392 1393 if (gdev->state == CCWGROUP_OFFLINE) 1394 goto out; 1395 1396 if (card->state == CARD_STATE_RECOVER) { 1397 rc = __qeth_l2_set_online(card->gdev, 1); 1398 if (rc) { 1399 rtnl_lock(); 1400 dev_close(card->dev); 1401 rtnl_unlock(); 1402 } 1403 } else 1404 rc = __qeth_l2_set_online(card->gdev, 0); 1405 out: 1406 qeth_set_allowed_threads(card, 0xffffffff, 0); 1407 if (card->dev) 1408 netif_device_attach(card->dev); 1409 if (rc) 1410 dev_warn(&card->gdev->dev, "The qeth device driver " 1411 "failed to recover an error on the device\n"); 1412 return rc; 1413 } 1414 1415 /* Returns zero if the command is successfully "consumed" */ 1416 static int qeth_l2_control_event(struct qeth_card *card, 1417 struct qeth_ipa_cmd *cmd) 1418 { 1419 switch (cmd->hdr.command) { 1420 case IPA_CMD_SETBRIDGEPORT_OSA: 1421 case IPA_CMD_SETBRIDGEPORT_IQD: 1422 if (cmd->data.sbp.hdr.command_code == 1423 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1424 qeth_bridge_state_change(card, cmd); 1425 return 0; 1426 } else 1427 return 1; 1428 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1429 qeth_bridge_host_event(card, cmd); 1430 return 0; 1431 default: 1432 return 1; 1433 } 1434 } 1435 1436 struct qeth_discipline qeth_l2_discipline = { 1437 .start_poll = qeth_qdio_start_poll, 1438 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1439 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1440 .recover = qeth_l2_recover, 1441 .setup = qeth_l2_probe_device, 1442 .remove = qeth_l2_remove_device, 1443 .set_online = qeth_l2_set_online, 1444 .set_offline = qeth_l2_set_offline, 1445 .shutdown = qeth_l2_shutdown, 1446 .freeze = qeth_l2_pm_suspend, 1447 .thaw = qeth_l2_pm_resume, 1448 .restore = qeth_l2_pm_resume, 1449 .control_event_handler = qeth_l2_control_event, 1450 }; 1451 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1452 1453 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1454 struct qeth_cmd_buffer *iob) 1455 { 1456 unsigned long flags; 1457 int rc = 0; 1458 1459 QETH_CARD_TEXT(card, 5, "osndctrd"); 1460 1461 wait_event(card->wait_q, 1462 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1463 qeth_prepare_control_data(card, len, iob); 1464 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1465 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1466 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1467 (addr_t) iob, 0, 0); 1468 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1469 if (rc) { 1470 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1471 "ccw_device_start rc = %i\n", rc); 1472 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1473 qeth_release_buffer(iob->channel, iob); 1474 atomic_set(&card->write.irq_pending, 0); 1475 wake_up(&card->wait_q); 1476 } 1477 return rc; 1478 } 1479 1480 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1481 struct qeth_cmd_buffer *iob, int data_len) 1482 { 1483 u16 s1, s2; 1484 1485 QETH_CARD_TEXT(card, 4, "osndipa"); 1486 1487 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1488 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1489 s2 = (u16)data_len; 1490 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1491 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1492 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1493 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1494 return qeth_osn_send_control_data(card, s1, iob); 1495 } 1496 1497 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1498 { 1499 struct qeth_cmd_buffer *iob; 1500 struct qeth_card *card; 1501 int rc; 1502 1503 if (!dev) 1504 return -ENODEV; 1505 card = dev->ml_priv; 1506 if (!card) 1507 return -ENODEV; 1508 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1509 if (!qeth_card_hw_is_reachable(card)) 1510 return -ENODEV; 1511 iob = qeth_wait_for_buffer(&card->write); 1512 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1513 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1514 return rc; 1515 } 1516 EXPORT_SYMBOL(qeth_osn_assist); 1517 1518 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1519 int (*assist_cb)(struct net_device *, void *), 1520 int (*data_cb)(struct sk_buff *)) 1521 { 1522 struct qeth_card *card; 1523 1524 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1525 if (*dev == NULL) 1526 return -ENODEV; 1527 card = (*dev)->ml_priv; 1528 if (!card) 1529 return -ENODEV; 1530 QETH_CARD_TEXT(card, 2, "osnreg"); 1531 if ((assist_cb == NULL) || (data_cb == NULL)) 1532 return -EINVAL; 1533 card->osn_info.assist_cb = assist_cb; 1534 card->osn_info.data_cb = data_cb; 1535 return 0; 1536 } 1537 EXPORT_SYMBOL(qeth_osn_register); 1538 1539 void qeth_osn_deregister(struct net_device *dev) 1540 { 1541 struct qeth_card *card; 1542 1543 if (!dev) 1544 return; 1545 card = dev->ml_priv; 1546 if (!card) 1547 return; 1548 QETH_CARD_TEXT(card, 2, "osndereg"); 1549 card->osn_info.assist_cb = NULL; 1550 card->osn_info.data_cb = NULL; 1551 return; 1552 } 1553 EXPORT_SYMBOL(qeth_osn_deregister); 1554 1555 /* SETBRIDGEPORT support, async notifications */ 1556 1557 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1558 1559 /** 1560 * qeth_bridge_emit_host_event() - bridgeport address change notification 1561 * @card: qeth_card structure pointer, for udev events. 1562 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1563 * and reset token and addr_lnid are unused and may be NULL. 1564 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1565 * object, 0 - addition of an object. 1566 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1567 * @token: "network token" structure identifying physical address of the port. 1568 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1569 * 1570 * This function is called when registrations and deregistrations are 1571 * reported by the hardware, and also when notifications are enabled - 1572 * for all currently registered addresses. 1573 */ 1574 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1575 enum qeth_an_event_type evtype, 1576 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1577 { 1578 char str[7][32]; 1579 char *env[8]; 1580 int i = 0; 1581 1582 switch (evtype) { 1583 case anev_reg_unreg: 1584 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1585 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1586 ? "deregister" : "register"); 1587 env[i] = str[i]; i++; 1588 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1589 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1590 addr_lnid->lnid); 1591 env[i] = str[i]; i++; 1592 } 1593 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1594 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1595 addr_lnid->mac); 1596 env[i] = str[i]; i++; 1597 } 1598 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1599 token->cssid, token->ssid, token->devnum); 1600 env[i] = str[i]; i++; 1601 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1602 env[i] = str[i]; i++; 1603 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1604 token->chpid); 1605 env[i] = str[i]; i++; 1606 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1607 env[i] = str[i]; i++; 1608 break; 1609 case anev_abort: 1610 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1611 env[i] = str[i]; i++; 1612 break; 1613 case anev_reset: 1614 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1615 env[i] = str[i]; i++; 1616 break; 1617 } 1618 env[i] = NULL; 1619 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1620 } 1621 1622 struct qeth_bridge_state_data { 1623 struct work_struct worker; 1624 struct qeth_card *card; 1625 struct qeth_sbp_state_change qports; 1626 }; 1627 1628 static void qeth_bridge_state_change_worker(struct work_struct *work) 1629 { 1630 struct qeth_bridge_state_data *data = 1631 container_of(work, struct qeth_bridge_state_data, worker); 1632 /* We are only interested in the first entry - local port */ 1633 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1634 char env_locrem[32]; 1635 char env_role[32]; 1636 char env_state[32]; 1637 char *env[] = { 1638 env_locrem, 1639 env_role, 1640 env_state, 1641 NULL 1642 }; 1643 1644 /* Role should not change by itself, but if it did, */ 1645 /* information from the hardware is authoritative. */ 1646 mutex_lock(&data->card->conf_mutex); 1647 data->card->options.sbp.role = entry->role; 1648 mutex_unlock(&data->card->conf_mutex); 1649 1650 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1651 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1652 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1653 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1654 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1655 "<INVALID>"); 1656 snprintf(env_state, sizeof(env_state), "STATE=%s", 1657 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1658 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1659 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1660 "<INVALID>"); 1661 kobject_uevent_env(&data->card->gdev->dev.kobj, 1662 KOBJ_CHANGE, env); 1663 kfree(data); 1664 } 1665 1666 static void qeth_bridge_state_change(struct qeth_card *card, 1667 struct qeth_ipa_cmd *cmd) 1668 { 1669 struct qeth_sbp_state_change *qports = 1670 &cmd->data.sbp.data.state_change; 1671 struct qeth_bridge_state_data *data; 1672 int extrasize; 1673 1674 QETH_CARD_TEXT(card, 2, "brstchng"); 1675 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1676 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1677 return; 1678 } 1679 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1680 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1681 GFP_ATOMIC); 1682 if (!data) { 1683 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1684 return; 1685 } 1686 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1687 data->card = card; 1688 memcpy(&data->qports, qports, 1689 sizeof(struct qeth_sbp_state_change) + extrasize); 1690 queue_work(qeth_wq, &data->worker); 1691 } 1692 1693 struct qeth_bridge_host_data { 1694 struct work_struct worker; 1695 struct qeth_card *card; 1696 struct qeth_ipacmd_addr_change hostevs; 1697 }; 1698 1699 static void qeth_bridge_host_event_worker(struct work_struct *work) 1700 { 1701 struct qeth_bridge_host_data *data = 1702 container_of(work, struct qeth_bridge_host_data, worker); 1703 int i; 1704 1705 if (data->hostevs.lost_event_mask) { 1706 dev_info(&data->card->gdev->dev, 1707 "Address notification from the Bridge Port stopped %s (%s)\n", 1708 data->card->dev->name, 1709 (data->hostevs.lost_event_mask == 0x01) 1710 ? "Overflow" 1711 : (data->hostevs.lost_event_mask == 0x02) 1712 ? "Bridge port state change" 1713 : "Unknown reason"); 1714 mutex_lock(&data->card->conf_mutex); 1715 data->card->options.sbp.hostnotification = 0; 1716 mutex_unlock(&data->card->conf_mutex); 1717 qeth_bridge_emit_host_event(data->card, anev_abort, 1718 0, NULL, NULL); 1719 } else 1720 for (i = 0; i < data->hostevs.num_entries; i++) { 1721 struct qeth_ipacmd_addr_change_entry *entry = 1722 &data->hostevs.entry[i]; 1723 qeth_bridge_emit_host_event(data->card, 1724 anev_reg_unreg, 1725 entry->change_code, 1726 &entry->token, &entry->addr_lnid); 1727 } 1728 kfree(data); 1729 } 1730 1731 static void qeth_bridge_host_event(struct qeth_card *card, 1732 struct qeth_ipa_cmd *cmd) 1733 { 1734 struct qeth_ipacmd_addr_change *hostevs = 1735 &cmd->data.addrchange; 1736 struct qeth_bridge_host_data *data; 1737 int extrasize; 1738 1739 QETH_CARD_TEXT(card, 2, "brhostev"); 1740 if (cmd->hdr.return_code != 0x0000) { 1741 if (cmd->hdr.return_code == 0x0010) { 1742 if (hostevs->lost_event_mask == 0x00) 1743 hostevs->lost_event_mask = 0xff; 1744 } else { 1745 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1746 cmd->hdr.return_code); 1747 return; 1748 } 1749 } 1750 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1751 hostevs->num_entries; 1752 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1753 GFP_ATOMIC); 1754 if (!data) { 1755 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1756 return; 1757 } 1758 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1759 data->card = card; 1760 memcpy(&data->hostevs, hostevs, 1761 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1762 queue_work(qeth_wq, &data->worker); 1763 } 1764 1765 /* SETBRIDGEPORT support; sending commands */ 1766 1767 struct _qeth_sbp_cbctl { 1768 u16 ipa_rc; 1769 u16 cmd_rc; 1770 union { 1771 u32 supported; 1772 struct { 1773 enum qeth_sbp_roles *role; 1774 enum qeth_sbp_states *state; 1775 } qports; 1776 } data; 1777 }; 1778 1779 /** 1780 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1781 * @card: qeth_card structure pointer, for debug messages. 1782 * @cbctl: state structure with hardware return codes. 1783 * @setcmd: IPA command code 1784 * 1785 * Returns negative errno-compatible error indication or 0 on success. 1786 */ 1787 static int qeth_bridgeport_makerc(struct qeth_card *card, 1788 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1789 { 1790 int rc; 1791 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1792 1793 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1794 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1795 switch (cbctl->cmd_rc) { 1796 case 0x0000: 1797 rc = 0; 1798 break; 1799 case 0x2B04: 1800 case 0x0004: 1801 rc = -EOPNOTSUPP; 1802 break; 1803 case 0x2B0C: 1804 case 0x000C: /* Not configured as bridge Port */ 1805 rc = -ENODEV; /* maybe not the best code here? */ 1806 dev_err(&card->gdev->dev, 1807 "The device is not configured as a Bridge Port\n"); 1808 break; 1809 case 0x2B10: 1810 case 0x0010: /* OS mismatch */ 1811 rc = -EPERM; 1812 dev_err(&card->gdev->dev, 1813 "A Bridge Port is already configured by a different operating system\n"); 1814 break; 1815 case 0x2B14: 1816 case 0x0014: /* Another device is Primary */ 1817 switch (setcmd) { 1818 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1819 rc = -EEXIST; 1820 dev_err(&card->gdev->dev, 1821 "The LAN already has a primary Bridge Port\n"); 1822 break; 1823 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1824 rc = -EBUSY; 1825 dev_err(&card->gdev->dev, 1826 "The device is already a primary Bridge Port\n"); 1827 break; 1828 default: 1829 rc = -EIO; 1830 } 1831 break; 1832 case 0x2B18: 1833 case 0x0018: /* This device is currently Secondary */ 1834 rc = -EBUSY; 1835 dev_err(&card->gdev->dev, 1836 "The device is already a secondary Bridge Port\n"); 1837 break; 1838 case 0x2B1C: 1839 case 0x001C: /* Limit for Secondary devices reached */ 1840 rc = -EEXIST; 1841 dev_err(&card->gdev->dev, 1842 "The LAN cannot have more secondary Bridge Ports\n"); 1843 break; 1844 case 0x2B24: 1845 case 0x0024: /* This device is currently Primary */ 1846 rc = -EBUSY; 1847 dev_err(&card->gdev->dev, 1848 "The device is already a primary Bridge Port\n"); 1849 break; 1850 case 0x2B20: 1851 case 0x0020: /* Not authorized by zManager */ 1852 rc = -EACCES; 1853 dev_err(&card->gdev->dev, 1854 "The device is not authorized to be a Bridge Port\n"); 1855 break; 1856 default: 1857 rc = -EIO; 1858 } 1859 else 1860 switch (cbctl->ipa_rc) { 1861 case IPA_RC_NOTSUPP: 1862 rc = -EOPNOTSUPP; 1863 break; 1864 case IPA_RC_UNSUPPORTED_COMMAND: 1865 rc = -EOPNOTSUPP; 1866 break; 1867 default: 1868 rc = -EIO; 1869 } 1870 1871 if (rc) { 1872 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1873 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1874 } 1875 return rc; 1876 } 1877 1878 static inline int ipa_cmd_sbp(struct qeth_card *card) 1879 { 1880 return (card->info.type == QETH_CARD_TYPE_IQD) ? 1881 IPA_CMD_SETBRIDGEPORT_IQD : 1882 IPA_CMD_SETBRIDGEPORT_OSA; 1883 } 1884 1885 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1886 struct qeth_reply *reply, unsigned long data) 1887 { 1888 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1889 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1890 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1891 cbctl->ipa_rc = cmd->hdr.return_code; 1892 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1893 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1894 cbctl->data.supported = 1895 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1896 } else { 1897 cbctl->data.supported = 0; 1898 } 1899 return 0; 1900 } 1901 1902 /** 1903 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1904 * @card: qeth_card structure pointer. 1905 * 1906 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1907 * strucutre: card->options.sbp.supported_funcs. 1908 */ 1909 static void qeth_bridgeport_query_support(struct qeth_card *card) 1910 { 1911 struct qeth_cmd_buffer *iob; 1912 struct qeth_ipa_cmd *cmd; 1913 struct _qeth_sbp_cbctl cbctl; 1914 1915 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1916 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1917 if (!iob) 1918 return; 1919 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1920 cmd->data.sbp.hdr.cmdlength = 1921 sizeof(struct qeth_ipacmd_sbp_hdr) + 1922 sizeof(struct qeth_sbp_query_cmds_supp); 1923 cmd->data.sbp.hdr.command_code = 1924 IPA_SBP_QUERY_COMMANDS_SUPPORTED; 1925 cmd->data.sbp.hdr.used_total = 1; 1926 cmd->data.sbp.hdr.seq_no = 1; 1927 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1928 (void *)&cbctl) || 1929 qeth_bridgeport_makerc(card, &cbctl, 1930 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1931 /* non-zero makerc signifies failure, and produce messages */ 1932 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1933 return; 1934 } 1935 card->options.sbp.supported_funcs = cbctl.data.supported; 1936 } 1937 1938 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1939 struct qeth_reply *reply, unsigned long data) 1940 { 1941 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1942 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1943 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1944 1945 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1946 cbctl->ipa_rc = cmd->hdr.return_code; 1947 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1948 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1949 return 0; 1950 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1951 cbctl->cmd_rc = 0xffff; 1952 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1953 return 0; 1954 } 1955 /* first entry contains the state of the local port */ 1956 if (qports->num_entries > 0) { 1957 if (cbctl->data.qports.role) 1958 *cbctl->data.qports.role = qports->entry[0].role; 1959 if (cbctl->data.qports.state) 1960 *cbctl->data.qports.state = qports->entry[0].state; 1961 } 1962 return 0; 1963 } 1964 1965 /** 1966 * qeth_bridgeport_query_ports() - query local bridgeport status. 1967 * @card: qeth_card structure pointer. 1968 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1969 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1970 * 1971 * Returns negative errno-compatible error indication or 0 on success. 1972 * 1973 * 'role' and 'state' are not updated in case of hardware operation failure. 1974 */ 1975 int qeth_bridgeport_query_ports(struct qeth_card *card, 1976 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1977 { 1978 int rc = 0; 1979 struct qeth_cmd_buffer *iob; 1980 struct qeth_ipa_cmd *cmd; 1981 struct _qeth_sbp_cbctl cbctl = { 1982 .data = { 1983 .qports = { 1984 .role = role, 1985 .state = state, 1986 }, 1987 }, 1988 }; 1989 1990 QETH_CARD_TEXT(card, 2, "brqports"); 1991 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1992 return -EOPNOTSUPP; 1993 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1994 if (!iob) 1995 return -ENOMEM; 1996 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1997 cmd->data.sbp.hdr.cmdlength = 1998 sizeof(struct qeth_ipacmd_sbp_hdr); 1999 cmd->data.sbp.hdr.command_code = 2000 IPA_SBP_QUERY_BRIDGE_PORTS; 2001 cmd->data.sbp.hdr.used_total = 1; 2002 cmd->data.sbp.hdr.seq_no = 1; 2003 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 2004 (void *)&cbctl); 2005 if (rc < 0) 2006 return rc; 2007 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 2008 } 2009 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 2010 2011 static int qeth_bridgeport_set_cb(struct qeth_card *card, 2012 struct qeth_reply *reply, unsigned long data) 2013 { 2014 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 2015 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 2016 QETH_CARD_TEXT(card, 2, "brsetrcb"); 2017 cbctl->ipa_rc = cmd->hdr.return_code; 2018 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 2019 return 0; 2020 } 2021 2022 /** 2023 * qeth_bridgeport_setrole() - Assign primary role to the port. 2024 * @card: qeth_card structure pointer. 2025 * @role: Role to assign. 2026 * 2027 * Returns negative errno-compatible error indication or 0 on success. 2028 */ 2029 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 2030 { 2031 int rc = 0; 2032 int cmdlength; 2033 struct qeth_cmd_buffer *iob; 2034 struct qeth_ipa_cmd *cmd; 2035 struct _qeth_sbp_cbctl cbctl; 2036 enum qeth_ipa_sbp_cmd setcmd; 2037 2038 QETH_CARD_TEXT(card, 2, "brsetrol"); 2039 switch (role) { 2040 case QETH_SBP_ROLE_NONE: 2041 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 2042 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2043 sizeof(struct qeth_sbp_reset_role); 2044 break; 2045 case QETH_SBP_ROLE_PRIMARY: 2046 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 2047 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2048 sizeof(struct qeth_sbp_set_primary); 2049 break; 2050 case QETH_SBP_ROLE_SECONDARY: 2051 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 2052 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2053 sizeof(struct qeth_sbp_set_secondary); 2054 break; 2055 default: 2056 return -EINVAL; 2057 } 2058 if (!(card->options.sbp.supported_funcs & setcmd)) 2059 return -EOPNOTSUPP; 2060 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 2061 if (!iob) 2062 return -ENOMEM; 2063 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2064 cmd->data.sbp.hdr.cmdlength = cmdlength; 2065 cmd->data.sbp.hdr.command_code = setcmd; 2066 cmd->data.sbp.hdr.used_total = 1; 2067 cmd->data.sbp.hdr.seq_no = 1; 2068 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 2069 (void *)&cbctl); 2070 if (rc < 0) 2071 return rc; 2072 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 2073 } 2074 2075 /** 2076 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 2077 * @card: qeth_card structure pointer, for debug messages. 2078 * 2079 * Returns negative errno-compatible error indication or 0 on success. 2080 */ 2081 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 2082 { 2083 int rc; 2084 2085 if (pnso_rc == 0) 2086 switch (response) { 2087 case 0x0001: 2088 rc = 0; 2089 break; 2090 case 0x0004: 2091 case 0x0100: 2092 case 0x0106: 2093 rc = -EOPNOTSUPP; 2094 dev_err(&card->gdev->dev, 2095 "Setting address notification failed\n"); 2096 break; 2097 case 0x0107: 2098 rc = -EAGAIN; 2099 break; 2100 default: 2101 rc = -EIO; 2102 } 2103 else 2104 rc = -EIO; 2105 2106 if (rc) { 2107 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 2108 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 2109 } 2110 return rc; 2111 } 2112 2113 static void qeth_bridgeport_an_set_cb(void *priv, 2114 enum qdio_brinfo_entry_type type, void *entry) 2115 { 2116 struct qeth_card *card = (struct qeth_card *)priv; 2117 struct qdio_brinfo_entry_l2 *l2entry; 2118 u8 code; 2119 2120 if (type != l2_addr_lnid) { 2121 WARN_ON_ONCE(1); 2122 return; 2123 } 2124 2125 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 2126 code = IPA_ADDR_CHANGE_CODE_MACADDR; 2127 if (l2entry->addr_lnid.lnid) 2128 code |= IPA_ADDR_CHANGE_CODE_VLANID; 2129 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 2130 (struct net_if_token *)&l2entry->nit, 2131 (struct mac_addr_lnid *)&l2entry->addr_lnid); 2132 } 2133 2134 /** 2135 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 2136 * @card: qeth_card structure pointer. 2137 * @enable: 0 - disable, non-zero - enable notifications 2138 * 2139 * Returns negative errno-compatible error indication or 0 on success. 2140 * 2141 * On enable, emits a series of address notifications udev events for all 2142 * currently registered hosts. 2143 */ 2144 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2145 { 2146 int rc; 2147 u16 response; 2148 struct ccw_device *ddev; 2149 struct subchannel_id schid; 2150 2151 if (!card) 2152 return -EINVAL; 2153 if (!card->options.sbp.supported_funcs) 2154 return -EOPNOTSUPP; 2155 ddev = CARD_DDEV(card); 2156 ccw_device_get_schid(ddev, &schid); 2157 2158 if (enable) { 2159 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2160 rc = qdio_pnso_brinfo(schid, 1, &response, 2161 qeth_bridgeport_an_set_cb, card); 2162 } else 2163 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2164 return qeth_anset_makerc(card, rc, response); 2165 } 2166 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2167 2168 module_init(qeth_l2_init); 2169 module_exit(qeth_l2_exit); 2170 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2171 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2172 MODULE_LICENSE("GPL"); 2173