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 netdev_features_t qeth_l2_fix_features(struct net_device *dev, 408 netdev_features_t features) 409 { 410 struct qeth_card *card = dev->ml_priv; 411 412 QETH_DBF_TEXT(SETUP, 2, "fixfeat"); 413 if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) 414 features &= ~NETIF_F_IP_CSUM; 415 if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 416 features &= ~NETIF_F_RXCSUM; 417 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 418 return features; 419 } 420 421 static int qeth_l2_set_features(struct net_device *dev, 422 netdev_features_t features) 423 { 424 struct qeth_card *card = dev->ml_priv; 425 netdev_features_t changed = dev->features ^ features; 426 427 QETH_DBF_TEXT(SETUP, 2, "setfeat"); 428 QETH_DBF_HEX(SETUP, 2, &features, sizeof(features)); 429 430 if (card->state == CARD_STATE_DOWN || 431 card->state == CARD_STATE_RECOVER) 432 return 0; 433 434 if (!(changed & NETIF_F_RXCSUM)) 435 return 0; 436 return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0); 437 } 438 439 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 440 { 441 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 442 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 443 444 qeth_set_allowed_threads(card, 0, 1); 445 if (card->read.state == CH_STATE_UP && 446 card->write.state == CH_STATE_UP && 447 (card->state == CARD_STATE_UP)) { 448 if (recovery_mode && 449 card->info.type != QETH_CARD_TYPE_OSN) { 450 qeth_l2_stop(card->dev); 451 } else { 452 rtnl_lock(); 453 dev_close(card->dev); 454 rtnl_unlock(); 455 } 456 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 457 card->state = CARD_STATE_SOFTSETUP; 458 } 459 if (card->state == CARD_STATE_SOFTSETUP) { 460 qeth_l2_del_all_macs(card, 0); 461 qeth_clear_ipacmd_list(card); 462 card->state = CARD_STATE_HARDSETUP; 463 } 464 if (card->state == CARD_STATE_HARDSETUP) { 465 qeth_qdio_clear_card(card, 0); 466 qeth_clear_qdio_buffers(card); 467 qeth_clear_working_pool_list(card); 468 card->state = CARD_STATE_DOWN; 469 } 470 if (card->state == CARD_STATE_DOWN) { 471 qeth_clear_cmd_buffers(&card->read); 472 qeth_clear_cmd_buffers(&card->write); 473 } 474 } 475 476 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 477 int budget, int *done) 478 { 479 int work_done = 0; 480 struct sk_buff *skb; 481 struct qeth_hdr *hdr; 482 unsigned int len; 483 484 *done = 0; 485 WARN_ON_ONCE(!budget); 486 while (budget) { 487 skb = qeth_core_get_next_skb(card, 488 &card->qdio.in_q->bufs[card->rx.b_index], 489 &card->rx.b_element, &card->rx.e_offset, &hdr); 490 if (!skb) { 491 *done = 1; 492 break; 493 } 494 skb->dev = card->dev; 495 switch (hdr->hdr.l2.id) { 496 case QETH_HEADER_TYPE_LAYER2: 497 skb->pkt_type = PACKET_HOST; 498 skb->protocol = eth_type_trans(skb, skb->dev); 499 if ((card->dev->features & NETIF_F_RXCSUM) 500 && ((hdr->hdr.l2.flags[1] & 501 (QETH_HDR_EXT_CSUM_HDR_REQ | 502 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 503 (QETH_HDR_EXT_CSUM_HDR_REQ | 504 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 505 skb->ip_summed = CHECKSUM_UNNECESSARY; 506 else 507 skb->ip_summed = CHECKSUM_NONE; 508 if (skb->protocol == htons(ETH_P_802_2)) 509 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 510 len = skb->len; 511 napi_gro_receive(&card->napi, skb); 512 break; 513 case QETH_HEADER_TYPE_OSN: 514 if (card->info.type == QETH_CARD_TYPE_OSN) { 515 skb_push(skb, sizeof(struct qeth_hdr)); 516 skb_copy_to_linear_data(skb, hdr, 517 sizeof(struct qeth_hdr)); 518 len = skb->len; 519 card->osn_info.data_cb(skb); 520 break; 521 } 522 /* else unknown */ 523 default: 524 dev_kfree_skb_any(skb); 525 QETH_CARD_TEXT(card, 3, "inbunkno"); 526 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 527 continue; 528 } 529 work_done++; 530 budget--; 531 card->stats.rx_packets++; 532 card->stats.rx_bytes += len; 533 } 534 return work_done; 535 } 536 537 static int qeth_l2_poll(struct napi_struct *napi, int budget) 538 { 539 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 540 int work_done = 0; 541 struct qeth_qdio_buffer *buffer; 542 int done; 543 int new_budget = budget; 544 545 if (card->options.performance_stats) { 546 card->perf_stats.inbound_cnt++; 547 card->perf_stats.inbound_start_time = qeth_get_micros(); 548 } 549 550 while (1) { 551 if (!card->rx.b_count) { 552 card->rx.qdio_err = 0; 553 card->rx.b_count = qdio_get_next_buffers( 554 card->data.ccwdev, 0, &card->rx.b_index, 555 &card->rx.qdio_err); 556 if (card->rx.b_count <= 0) { 557 card->rx.b_count = 0; 558 break; 559 } 560 card->rx.b_element = 561 &card->qdio.in_q->bufs[card->rx.b_index] 562 .buffer->element[0]; 563 card->rx.e_offset = 0; 564 } 565 566 while (card->rx.b_count) { 567 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 568 if (!(card->rx.qdio_err && 569 qeth_check_qdio_errors(card, buffer->buffer, 570 card->rx.qdio_err, "qinerr"))) 571 work_done += qeth_l2_process_inbound_buffer( 572 card, new_budget, &done); 573 else 574 done = 1; 575 576 if (done) { 577 if (card->options.performance_stats) 578 card->perf_stats.bufs_rec++; 579 qeth_put_buffer_pool_entry(card, 580 buffer->pool_entry); 581 qeth_queue_input_buffer(card, card->rx.b_index); 582 card->rx.b_count--; 583 if (card->rx.b_count) { 584 card->rx.b_index = 585 (card->rx.b_index + 1) % 586 QDIO_MAX_BUFFERS_PER_Q; 587 card->rx.b_element = 588 &card->qdio.in_q 589 ->bufs[card->rx.b_index] 590 .buffer->element[0]; 591 card->rx.e_offset = 0; 592 } 593 } 594 595 if (work_done >= budget) 596 goto out; 597 else 598 new_budget = budget - work_done; 599 } 600 } 601 602 napi_complete(napi); 603 if (qdio_start_irq(card->data.ccwdev, 0)) 604 napi_schedule(&card->napi); 605 out: 606 if (card->options.performance_stats) 607 card->perf_stats.inbound_time += qeth_get_micros() - 608 card->perf_stats.inbound_start_time; 609 return work_done; 610 } 611 612 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 613 enum qeth_ipa_cmds ipacmd) 614 { 615 struct qeth_ipa_cmd *cmd; 616 struct qeth_cmd_buffer *iob; 617 618 QETH_CARD_TEXT(card, 2, "L2sdmac"); 619 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 620 if (!iob) 621 return -ENOMEM; 622 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 623 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 624 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 625 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 626 } 627 628 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 629 { 630 int rc; 631 632 QETH_CARD_TEXT(card, 2, "L2Setmac"); 633 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac, 634 IPA_CMD_SETVMAC)); 635 if (rc == 0) { 636 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 637 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN); 638 dev_info(&card->gdev->dev, 639 "MAC address %pM successfully registered on device %s\n", 640 card->dev->dev_addr, card->dev->name); 641 } else { 642 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 643 switch (rc) { 644 case -EEXIST: 645 dev_warn(&card->gdev->dev, 646 "MAC address %pM already exists\n", mac); 647 break; 648 case -EPERM: 649 dev_warn(&card->gdev->dev, 650 "MAC address %pM is not authorized\n", mac); 651 break; 652 } 653 } 654 return rc; 655 } 656 657 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 658 { 659 int rc; 660 661 QETH_CARD_TEXT(card, 2, "L2Delmac"); 662 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 663 return 0; 664 rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac, 665 IPA_CMD_DELVMAC)); 666 if (rc == 0) 667 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 668 return rc; 669 } 670 671 static int qeth_l2_request_initial_mac(struct qeth_card *card) 672 { 673 int rc = 0; 674 char vendor_pre[] = {0x02, 0x00, 0x00}; 675 676 QETH_DBF_TEXT(SETUP, 2, "doL2init"); 677 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 678 679 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 680 rc = qeth_query_setadapterparms(card); 681 if (rc) { 682 QETH_DBF_MESSAGE(2, "could not query adapter " 683 "parameters on device %s: x%x\n", 684 CARD_BUS_ID(card), rc); 685 } 686 } 687 688 if (card->info.type == QETH_CARD_TYPE_IQD || 689 card->info.type == QETH_CARD_TYPE_OSM || 690 card->info.type == QETH_CARD_TYPE_OSX || 691 card->info.guestlan) { 692 rc = qeth_setadpparms_change_macaddr(card); 693 if (rc) { 694 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 695 "device %s: x%x\n", CARD_BUS_ID(card), rc); 696 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 697 return rc; 698 } 699 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN); 700 } else { 701 eth_random_addr(card->dev->dev_addr); 702 memcpy(card->dev->dev_addr, vendor_pre, 3); 703 } 704 return 0; 705 } 706 707 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 708 { 709 struct sockaddr *addr = p; 710 struct qeth_card *card = dev->ml_priv; 711 int rc = 0; 712 713 QETH_CARD_TEXT(card, 3, "setmac"); 714 715 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { 716 QETH_CARD_TEXT(card, 3, "setmcINV"); 717 return -EOPNOTSUPP; 718 } 719 720 if (card->info.type == QETH_CARD_TYPE_OSN || 721 card->info.type == QETH_CARD_TYPE_OSM || 722 card->info.type == QETH_CARD_TYPE_OSX) { 723 QETH_CARD_TEXT(card, 3, "setmcTYP"); 724 return -EOPNOTSUPP; 725 } 726 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN); 727 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 728 QETH_CARD_TEXT(card, 3, "setmcREC"); 729 return -ERESTARTSYS; 730 } 731 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 732 if (!rc || (rc == -ENOENT)) 733 rc = qeth_l2_send_setmac(card, addr->sa_data); 734 return rc ? -EINVAL : 0; 735 } 736 737 static void qeth_promisc_to_bridge(struct qeth_card *card) 738 { 739 struct net_device *dev = card->dev; 740 enum qeth_ipa_promisc_modes promisc_mode; 741 int role; 742 int rc; 743 744 QETH_CARD_TEXT(card, 3, "pmisc2br"); 745 746 if (!card->options.sbp.reflect_promisc) 747 return; 748 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 749 : SET_PROMISC_MODE_OFF; 750 if (promisc_mode == card->info.promisc_mode) 751 return; 752 753 if (promisc_mode == SET_PROMISC_MODE_ON) { 754 if (card->options.sbp.reflect_promisc_primary) 755 role = QETH_SBP_ROLE_PRIMARY; 756 else 757 role = QETH_SBP_ROLE_SECONDARY; 758 } else 759 role = QETH_SBP_ROLE_NONE; 760 761 rc = qeth_bridgeport_setrole(card, role); 762 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 763 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 764 if (!rc) { 765 card->options.sbp.role = role; 766 card->info.promisc_mode = promisc_mode; 767 } 768 769 } 770 /* New MAC address is added to the hash table and marked to be written on card 771 * only if there is not in the hash table storage already 772 * 773 */ 774 static void 775 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc) 776 { 777 struct qeth_mac *mac; 778 779 hash_for_each_possible(card->mac_htable, mac, hnode, 780 qeth_l2_mac_hash(ha->addr)) { 781 if (is_uc == mac->is_uc && 782 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) { 783 mac->disp_flag = QETH_DISP_MAC_DO_NOTHING; 784 return; 785 } 786 } 787 788 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 789 790 if (!mac) 791 return; 792 793 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN); 794 mac->is_uc = is_uc; 795 mac->disp_flag = QETH_DISP_MAC_ADD; 796 797 hash_add(card->mac_htable, &mac->hnode, 798 qeth_l2_mac_hash(mac->mac_addr)); 799 800 } 801 802 static void qeth_l2_set_rx_mode(struct net_device *dev) 803 { 804 struct qeth_card *card = dev->ml_priv; 805 struct netdev_hw_addr *ha; 806 struct qeth_mac *mac; 807 struct hlist_node *tmp; 808 int i; 809 int rc; 810 811 if (card->info.type == QETH_CARD_TYPE_OSN) 812 return; 813 814 QETH_CARD_TEXT(card, 3, "setmulti"); 815 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 816 (card->state != CARD_STATE_UP)) 817 return; 818 819 spin_lock_bh(&card->mclock); 820 821 netdev_for_each_mc_addr(ha, dev) 822 qeth_l2_add_mac(card, ha, 0); 823 824 netdev_for_each_uc_addr(ha, dev) 825 qeth_l2_add_mac(card, ha, 1); 826 827 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 828 if (mac->disp_flag == QETH_DISP_MAC_DELETE) { 829 if (!mac->is_uc) 830 rc = qeth_l2_send_delgroupmac(card, 831 mac->mac_addr); 832 else { 833 rc = qeth_l2_send_setdelmac(card, mac->mac_addr, 834 IPA_CMD_DELVMAC); 835 } 836 837 hash_del(&mac->hnode); 838 kfree(mac); 839 840 } else if (mac->disp_flag == QETH_DISP_MAC_ADD) { 841 rc = qeth_l2_write_mac(card, mac); 842 if (rc) { 843 hash_del(&mac->hnode); 844 kfree(mac); 845 } else 846 mac->disp_flag = QETH_DISP_MAC_DELETE; 847 } else 848 mac->disp_flag = QETH_DISP_MAC_DELETE; 849 } 850 851 spin_unlock_bh(&card->mclock); 852 853 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 854 qeth_setadp_promisc_mode(card); 855 else 856 qeth_promisc_to_bridge(card); 857 } 858 859 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 860 { 861 int rc; 862 struct qeth_hdr *hdr = NULL; 863 int elements = 0; 864 struct qeth_card *card = dev->ml_priv; 865 struct sk_buff *new_skb = skb; 866 int cast_type = qeth_l2_get_cast_type(card, skb); 867 struct qeth_qdio_out_q *queue; 868 int tx_bytes = skb->len; 869 int data_offset = -1; 870 int elements_needed = 0; 871 int hd_len = 0; 872 873 if (card->qdio.do_prio_queueing || (cast_type && 874 card->info.is_multicast_different)) 875 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 876 qeth_get_ip_version(skb), cast_type)]; 877 else 878 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 879 880 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 881 card->stats.tx_carrier_errors++; 882 goto tx_drop; 883 } 884 885 if ((card->info.type == QETH_CARD_TYPE_OSN) && 886 (skb->protocol == htons(ETH_P_IPV6))) 887 goto tx_drop; 888 889 if (card->options.performance_stats) { 890 card->perf_stats.outbound_cnt++; 891 card->perf_stats.outbound_start_time = qeth_get_micros(); 892 } 893 netif_stop_queue(dev); 894 895 if (card->info.type == QETH_CARD_TYPE_OSN) 896 hdr = (struct qeth_hdr *)skb->data; 897 else { 898 if (card->info.type == QETH_CARD_TYPE_IQD) { 899 new_skb = skb; 900 data_offset = ETH_HLEN; 901 hd_len = ETH_HLEN; 902 hdr = kmem_cache_alloc(qeth_core_header_cache, 903 GFP_ATOMIC); 904 if (!hdr) 905 goto tx_drop; 906 elements_needed++; 907 skb_reset_mac_header(new_skb); 908 qeth_l2_fill_header(card, hdr, new_skb, cast_type); 909 hdr->hdr.l2.pkt_length = new_skb->len; 910 memcpy(((char *)hdr) + sizeof(struct qeth_hdr), 911 skb_mac_header(new_skb), ETH_HLEN); 912 } else { 913 /* create a clone with writeable headroom */ 914 new_skb = skb_realloc_headroom(skb, 915 sizeof(struct qeth_hdr)); 916 if (!new_skb) 917 goto tx_drop; 918 hdr = (struct qeth_hdr *)skb_push(new_skb, 919 sizeof(struct qeth_hdr)); 920 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr)); 921 qeth_l2_fill_header(card, hdr, new_skb, cast_type); 922 if (new_skb->ip_summed == CHECKSUM_PARTIAL) 923 qeth_l2_hdr_csum(card, hdr, new_skb); 924 } 925 } 926 927 elements = qeth_get_elements_no(card, new_skb, elements_needed); 928 if (!elements) { 929 if (data_offset >= 0) 930 kmem_cache_free(qeth_core_header_cache, hdr); 931 goto tx_drop; 932 } 933 934 if (card->info.type != QETH_CARD_TYPE_IQD) { 935 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, 936 sizeof(struct qeth_hdr_layer2))) 937 goto tx_drop; 938 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 939 elements); 940 } else 941 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 942 elements, data_offset, hd_len); 943 if (!rc) { 944 card->stats.tx_packets++; 945 card->stats.tx_bytes += tx_bytes; 946 if (new_skb != skb) 947 dev_kfree_skb_any(skb); 948 rc = NETDEV_TX_OK; 949 } else { 950 if (data_offset >= 0) 951 kmem_cache_free(qeth_core_header_cache, hdr); 952 953 if (rc == -EBUSY) { 954 if (new_skb != skb) 955 dev_kfree_skb_any(new_skb); 956 return NETDEV_TX_BUSY; 957 } else 958 goto tx_drop; 959 } 960 961 netif_wake_queue(dev); 962 if (card->options.performance_stats) 963 card->perf_stats.outbound_time += qeth_get_micros() - 964 card->perf_stats.outbound_start_time; 965 return rc; 966 967 tx_drop: 968 card->stats.tx_dropped++; 969 card->stats.tx_errors++; 970 if ((new_skb != skb) && new_skb) 971 dev_kfree_skb_any(new_skb); 972 dev_kfree_skb_any(skb); 973 netif_wake_queue(dev); 974 return NETDEV_TX_OK; 975 } 976 977 static int __qeth_l2_open(struct net_device *dev) 978 { 979 struct qeth_card *card = dev->ml_priv; 980 int rc = 0; 981 982 QETH_CARD_TEXT(card, 4, "qethopen"); 983 if (card->state == CARD_STATE_UP) 984 return rc; 985 if (card->state != CARD_STATE_SOFTSETUP) 986 return -ENODEV; 987 988 if ((card->info.type != QETH_CARD_TYPE_OSN) && 989 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 990 QETH_CARD_TEXT(card, 4, "nomacadr"); 991 return -EPERM; 992 } 993 card->data.state = CH_STATE_UP; 994 card->state = CARD_STATE_UP; 995 netif_start_queue(dev); 996 997 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 998 napi_enable(&card->napi); 999 napi_schedule(&card->napi); 1000 } else 1001 rc = -EIO; 1002 return rc; 1003 } 1004 1005 static int qeth_l2_open(struct net_device *dev) 1006 { 1007 struct qeth_card *card = dev->ml_priv; 1008 1009 QETH_CARD_TEXT(card, 5, "qethope_"); 1010 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 1011 QETH_CARD_TEXT(card, 3, "openREC"); 1012 return -ERESTARTSYS; 1013 } 1014 return __qeth_l2_open(dev); 1015 } 1016 1017 static int qeth_l2_stop(struct net_device *dev) 1018 { 1019 struct qeth_card *card = dev->ml_priv; 1020 1021 QETH_CARD_TEXT(card, 4, "qethstop"); 1022 netif_tx_disable(dev); 1023 if (card->state == CARD_STATE_UP) { 1024 card->state = CARD_STATE_SOFTSETUP; 1025 napi_disable(&card->napi); 1026 } 1027 return 0; 1028 } 1029 1030 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 1031 { 1032 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1033 1034 qeth_l2_create_device_attributes(&gdev->dev); 1035 INIT_LIST_HEAD(&card->vid_list); 1036 hash_init(card->mac_htable); 1037 card->options.layer2 = 1; 1038 card->info.hwtrap = 0; 1039 return 0; 1040 } 1041 1042 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 1043 { 1044 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1045 1046 qeth_l2_remove_device_attributes(&cgdev->dev); 1047 qeth_set_allowed_threads(card, 0, 1); 1048 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1049 1050 if (cgdev->state == CCWGROUP_ONLINE) 1051 qeth_l2_set_offline(cgdev); 1052 1053 if (card->dev) { 1054 netif_napi_del(&card->napi); 1055 unregister_netdev(card->dev); 1056 card->dev = NULL; 1057 } 1058 return; 1059 } 1060 1061 static const struct ethtool_ops qeth_l2_ethtool_ops = { 1062 .get_link = ethtool_op_get_link, 1063 .get_strings = qeth_core_get_strings, 1064 .get_ethtool_stats = qeth_core_get_ethtool_stats, 1065 .get_sset_count = qeth_core_get_sset_count, 1066 .get_drvinfo = qeth_core_get_drvinfo, 1067 .get_settings = qeth_core_ethtool_get_settings, 1068 }; 1069 1070 static const struct ethtool_ops qeth_l2_osn_ops = { 1071 .get_strings = qeth_core_get_strings, 1072 .get_ethtool_stats = qeth_core_get_ethtool_stats, 1073 .get_sset_count = qeth_core_get_sset_count, 1074 .get_drvinfo = qeth_core_get_drvinfo, 1075 }; 1076 1077 static const struct net_device_ops qeth_l2_netdev_ops = { 1078 .ndo_open = qeth_l2_open, 1079 .ndo_stop = qeth_l2_stop, 1080 .ndo_get_stats = qeth_get_stats, 1081 .ndo_start_xmit = qeth_l2_hard_start_xmit, 1082 .ndo_validate_addr = eth_validate_addr, 1083 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 1084 .ndo_do_ioctl = qeth_l2_do_ioctl, 1085 .ndo_set_mac_address = qeth_l2_set_mac_address, 1086 .ndo_change_mtu = qeth_change_mtu, 1087 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 1088 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 1089 .ndo_tx_timeout = qeth_tx_timeout, 1090 .ndo_fix_features = qeth_l2_fix_features, 1091 .ndo_set_features = qeth_l2_set_features 1092 }; 1093 1094 static int qeth_l2_setup_netdev(struct qeth_card *card) 1095 { 1096 switch (card->info.type) { 1097 case QETH_CARD_TYPE_IQD: 1098 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 1099 ether_setup); 1100 break; 1101 case QETH_CARD_TYPE_OSN: 1102 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 1103 ether_setup); 1104 card->dev->flags |= IFF_NOARP; 1105 break; 1106 default: 1107 card->dev = alloc_etherdev(0); 1108 } 1109 1110 if (!card->dev) 1111 return -ENODEV; 1112 1113 card->dev->ml_priv = card; 1114 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 1115 card->dev->mtu = card->info.initial_mtu; 1116 card->dev->netdev_ops = &qeth_l2_netdev_ops; 1117 card->dev->ethtool_ops = 1118 (card->info.type != QETH_CARD_TYPE_OSN) ? 1119 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops; 1120 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 1121 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 1122 card->dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM; 1123 /* Turn on RX offloading per default */ 1124 card->dev->features |= NETIF_F_RXCSUM; 1125 } 1126 card->info.broadcast_capable = 1; 1127 qeth_l2_request_initial_mac(card); 1128 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1129 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT); 1130 netif_carrier_off(card->dev); 1131 return register_netdev(card->dev); 1132 } 1133 1134 static int qeth_l2_start_ipassists(struct qeth_card *card) 1135 { 1136 /* configure isolation level */ 1137 if (qeth_set_access_ctrl_online(card, 0)) 1138 return -ENODEV; 1139 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) 1140 qeth_set_rx_csum(card, 1); 1141 qeth_start_ipa_tx_checksum(card); 1142 return 0; 1143 } 1144 1145 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1146 { 1147 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1148 int rc = 0; 1149 enum qeth_card_states recover_flag; 1150 1151 mutex_lock(&card->discipline_mutex); 1152 mutex_lock(&card->conf_mutex); 1153 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1154 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1155 1156 recover_flag = card->state; 1157 rc = qeth_core_hardsetup_card(card); 1158 if (rc) { 1159 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1160 rc = -ENODEV; 1161 goto out_remove; 1162 } 1163 qeth_bridgeport_query_support(card); 1164 if (card->options.sbp.supported_funcs) 1165 dev_info(&card->gdev->dev, 1166 "The device represents a Bridge Capable Port\n"); 1167 qeth_trace_features(card); 1168 1169 if (!card->dev && qeth_l2_setup_netdev(card)) { 1170 rc = -ENODEV; 1171 goto out_remove; 1172 } 1173 1174 if (card->info.type != QETH_CARD_TYPE_OSN) 1175 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1176 1177 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1178 if (card->info.hwtrap && 1179 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1180 card->info.hwtrap = 0; 1181 } else 1182 card->info.hwtrap = 0; 1183 1184 qeth_l2_setup_bridgeport_attrs(card); 1185 1186 card->state = CARD_STATE_HARDSETUP; 1187 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1188 qeth_print_status_message(card); 1189 1190 /* softsetup */ 1191 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1192 1193 rc = qeth_send_startlan(card); 1194 if (rc) { 1195 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1196 if (rc == 0xe080) { 1197 dev_warn(&card->gdev->dev, 1198 "The LAN is offline\n"); 1199 card->lan_online = 0; 1200 goto contin; 1201 } 1202 rc = -ENODEV; 1203 goto out_remove; 1204 } else 1205 card->lan_online = 1; 1206 1207 contin: 1208 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1209 (card->info.type == QETH_CARD_TYPE_OSX)) { 1210 if (qeth_l2_start_ipassists(card)) 1211 goto out_remove; 1212 } 1213 1214 if (card->info.type != QETH_CARD_TYPE_OSN && 1215 card->info.type != QETH_CARD_TYPE_OSM) 1216 qeth_l2_process_vlans(card); 1217 1218 netif_tx_disable(card->dev); 1219 1220 rc = qeth_init_qdio_queues(card); 1221 if (rc) { 1222 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1223 rc = -ENODEV; 1224 goto out_remove; 1225 } 1226 card->state = CARD_STATE_SOFTSETUP; 1227 if (card->lan_online) 1228 netif_carrier_on(card->dev); 1229 else 1230 netif_carrier_off(card->dev); 1231 1232 qeth_set_allowed_threads(card, 0xffffffff, 0); 1233 if (recover_flag == CARD_STATE_RECOVER) { 1234 if (recovery_mode && 1235 card->info.type != QETH_CARD_TYPE_OSN) { 1236 __qeth_l2_open(card->dev); 1237 } else { 1238 rtnl_lock(); 1239 dev_open(card->dev); 1240 rtnl_unlock(); 1241 } 1242 /* this also sets saved unicast addresses */ 1243 qeth_l2_set_rx_mode(card->dev); 1244 } 1245 /* let user_space know that device is online */ 1246 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1247 mutex_unlock(&card->conf_mutex); 1248 mutex_unlock(&card->discipline_mutex); 1249 return 0; 1250 1251 out_remove: 1252 qeth_l2_stop_card(card, 0); 1253 ccw_device_set_offline(CARD_DDEV(card)); 1254 ccw_device_set_offline(CARD_WDEV(card)); 1255 ccw_device_set_offline(CARD_RDEV(card)); 1256 qdio_free(CARD_DDEV(card)); 1257 if (recover_flag == CARD_STATE_RECOVER) 1258 card->state = CARD_STATE_RECOVER; 1259 else 1260 card->state = CARD_STATE_DOWN; 1261 mutex_unlock(&card->conf_mutex); 1262 mutex_unlock(&card->discipline_mutex); 1263 return rc; 1264 } 1265 1266 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1267 { 1268 return __qeth_l2_set_online(gdev, 0); 1269 } 1270 1271 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1272 int recovery_mode) 1273 { 1274 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1275 int rc = 0, rc2 = 0, rc3 = 0; 1276 enum qeth_card_states recover_flag; 1277 1278 mutex_lock(&card->discipline_mutex); 1279 mutex_lock(&card->conf_mutex); 1280 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1281 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1282 1283 if (card->dev && netif_carrier_ok(card->dev)) 1284 netif_carrier_off(card->dev); 1285 recover_flag = card->state; 1286 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1287 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1288 card->info.hwtrap = 1; 1289 } 1290 qeth_l2_stop_card(card, recovery_mode); 1291 rc = ccw_device_set_offline(CARD_DDEV(card)); 1292 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1293 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1294 if (!rc) 1295 rc = (rc2) ? rc2 : rc3; 1296 if (rc) 1297 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1298 qdio_free(CARD_DDEV(card)); 1299 if (recover_flag == CARD_STATE_UP) 1300 card->state = CARD_STATE_RECOVER; 1301 /* let user_space know that device is offline */ 1302 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1303 mutex_unlock(&card->conf_mutex); 1304 mutex_unlock(&card->discipline_mutex); 1305 return 0; 1306 } 1307 1308 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1309 { 1310 return __qeth_l2_set_offline(cgdev, 0); 1311 } 1312 1313 static int qeth_l2_recover(void *ptr) 1314 { 1315 struct qeth_card *card; 1316 int rc = 0; 1317 1318 card = (struct qeth_card *) ptr; 1319 QETH_CARD_TEXT(card, 2, "recover1"); 1320 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1321 return 0; 1322 QETH_CARD_TEXT(card, 2, "recover2"); 1323 dev_warn(&card->gdev->dev, 1324 "A recovery process has been started for the device\n"); 1325 qeth_set_recovery_task(card); 1326 __qeth_l2_set_offline(card->gdev, 1); 1327 rc = __qeth_l2_set_online(card->gdev, 1); 1328 if (!rc) 1329 dev_info(&card->gdev->dev, 1330 "Device successfully recovered!\n"); 1331 else { 1332 qeth_close_dev(card); 1333 dev_warn(&card->gdev->dev, "The qeth device driver " 1334 "failed to recover an error on the device\n"); 1335 } 1336 qeth_clear_recovery_task(card); 1337 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1338 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1339 return 0; 1340 } 1341 1342 static int __init qeth_l2_init(void) 1343 { 1344 pr_info("register layer 2 discipline\n"); 1345 return 0; 1346 } 1347 1348 static void __exit qeth_l2_exit(void) 1349 { 1350 pr_info("unregister layer 2 discipline\n"); 1351 } 1352 1353 static void qeth_l2_shutdown(struct ccwgroup_device *gdev) 1354 { 1355 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1356 qeth_set_allowed_threads(card, 0, 1); 1357 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 1358 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1359 qeth_qdio_clear_card(card, 0); 1360 qeth_clear_qdio_buffers(card); 1361 qdio_free(CARD_DDEV(card)); 1362 } 1363 1364 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1365 { 1366 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1367 1368 if (card->dev) 1369 netif_device_detach(card->dev); 1370 qeth_set_allowed_threads(card, 0, 1); 1371 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1372 if (gdev->state == CCWGROUP_OFFLINE) 1373 return 0; 1374 if (card->state == CARD_STATE_UP) { 1375 if (card->info.hwtrap) 1376 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1377 __qeth_l2_set_offline(card->gdev, 1); 1378 } else 1379 __qeth_l2_set_offline(card->gdev, 0); 1380 return 0; 1381 } 1382 1383 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1384 { 1385 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1386 int rc = 0; 1387 1388 if (gdev->state == CCWGROUP_OFFLINE) 1389 goto out; 1390 1391 if (card->state == CARD_STATE_RECOVER) { 1392 rc = __qeth_l2_set_online(card->gdev, 1); 1393 if (rc) { 1394 rtnl_lock(); 1395 dev_close(card->dev); 1396 rtnl_unlock(); 1397 } 1398 } else 1399 rc = __qeth_l2_set_online(card->gdev, 0); 1400 out: 1401 qeth_set_allowed_threads(card, 0xffffffff, 0); 1402 if (card->dev) 1403 netif_device_attach(card->dev); 1404 if (rc) 1405 dev_warn(&card->gdev->dev, "The qeth device driver " 1406 "failed to recover an error on the device\n"); 1407 return rc; 1408 } 1409 1410 /* Returns zero if the command is successfully "consumed" */ 1411 static int qeth_l2_control_event(struct qeth_card *card, 1412 struct qeth_ipa_cmd *cmd) 1413 { 1414 switch (cmd->hdr.command) { 1415 case IPA_CMD_SETBRIDGEPORT_OSA: 1416 case IPA_CMD_SETBRIDGEPORT_IQD: 1417 if (cmd->data.sbp.hdr.command_code == 1418 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1419 qeth_bridge_state_change(card, cmd); 1420 return 0; 1421 } else 1422 return 1; 1423 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1424 qeth_bridge_host_event(card, cmd); 1425 return 0; 1426 default: 1427 return 1; 1428 } 1429 } 1430 1431 struct qeth_discipline qeth_l2_discipline = { 1432 .start_poll = qeth_qdio_start_poll, 1433 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1434 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1435 .recover = qeth_l2_recover, 1436 .setup = qeth_l2_probe_device, 1437 .remove = qeth_l2_remove_device, 1438 .set_online = qeth_l2_set_online, 1439 .set_offline = qeth_l2_set_offline, 1440 .shutdown = qeth_l2_shutdown, 1441 .freeze = qeth_l2_pm_suspend, 1442 .thaw = qeth_l2_pm_resume, 1443 .restore = qeth_l2_pm_resume, 1444 .control_event_handler = qeth_l2_control_event, 1445 }; 1446 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1447 1448 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1449 struct qeth_cmd_buffer *iob) 1450 { 1451 unsigned long flags; 1452 int rc = 0; 1453 1454 QETH_CARD_TEXT(card, 5, "osndctrd"); 1455 1456 wait_event(card->wait_q, 1457 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1458 qeth_prepare_control_data(card, len, iob); 1459 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1460 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1461 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1462 (addr_t) iob, 0, 0); 1463 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1464 if (rc) { 1465 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1466 "ccw_device_start rc = %i\n", rc); 1467 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1468 qeth_release_buffer(iob->channel, iob); 1469 atomic_set(&card->write.irq_pending, 0); 1470 wake_up(&card->wait_q); 1471 } 1472 return rc; 1473 } 1474 1475 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1476 struct qeth_cmd_buffer *iob, int data_len) 1477 { 1478 u16 s1, s2; 1479 1480 QETH_CARD_TEXT(card, 4, "osndipa"); 1481 1482 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1483 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1484 s2 = (u16)data_len; 1485 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1486 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1487 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1488 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1489 return qeth_osn_send_control_data(card, s1, iob); 1490 } 1491 1492 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1493 { 1494 struct qeth_cmd_buffer *iob; 1495 struct qeth_card *card; 1496 int rc; 1497 1498 if (!dev) 1499 return -ENODEV; 1500 card = dev->ml_priv; 1501 if (!card) 1502 return -ENODEV; 1503 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1504 if (!qeth_card_hw_is_reachable(card)) 1505 return -ENODEV; 1506 iob = qeth_wait_for_buffer(&card->write); 1507 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1508 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1509 return rc; 1510 } 1511 EXPORT_SYMBOL(qeth_osn_assist); 1512 1513 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1514 int (*assist_cb)(struct net_device *, void *), 1515 int (*data_cb)(struct sk_buff *)) 1516 { 1517 struct qeth_card *card; 1518 1519 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1520 if (*dev == NULL) 1521 return -ENODEV; 1522 card = (*dev)->ml_priv; 1523 if (!card) 1524 return -ENODEV; 1525 QETH_CARD_TEXT(card, 2, "osnreg"); 1526 if ((assist_cb == NULL) || (data_cb == NULL)) 1527 return -EINVAL; 1528 card->osn_info.assist_cb = assist_cb; 1529 card->osn_info.data_cb = data_cb; 1530 return 0; 1531 } 1532 EXPORT_SYMBOL(qeth_osn_register); 1533 1534 void qeth_osn_deregister(struct net_device *dev) 1535 { 1536 struct qeth_card *card; 1537 1538 if (!dev) 1539 return; 1540 card = dev->ml_priv; 1541 if (!card) 1542 return; 1543 QETH_CARD_TEXT(card, 2, "osndereg"); 1544 card->osn_info.assist_cb = NULL; 1545 card->osn_info.data_cb = NULL; 1546 return; 1547 } 1548 EXPORT_SYMBOL(qeth_osn_deregister); 1549 1550 /* SETBRIDGEPORT support, async notifications */ 1551 1552 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1553 1554 /** 1555 * qeth_bridge_emit_host_event() - bridgeport address change notification 1556 * @card: qeth_card structure pointer, for udev events. 1557 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1558 * and reset token and addr_lnid are unused and may be NULL. 1559 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1560 * object, 0 - addition of an object. 1561 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1562 * @token: "network token" structure identifying physical address of the port. 1563 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1564 * 1565 * This function is called when registrations and deregistrations are 1566 * reported by the hardware, and also when notifications are enabled - 1567 * for all currently registered addresses. 1568 */ 1569 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1570 enum qeth_an_event_type evtype, 1571 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1572 { 1573 char str[7][32]; 1574 char *env[8]; 1575 int i = 0; 1576 1577 switch (evtype) { 1578 case anev_reg_unreg: 1579 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1580 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1581 ? "deregister" : "register"); 1582 env[i] = str[i]; i++; 1583 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1584 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1585 addr_lnid->lnid); 1586 env[i] = str[i]; i++; 1587 } 1588 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1589 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1590 addr_lnid->mac); 1591 env[i] = str[i]; i++; 1592 } 1593 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1594 token->cssid, token->ssid, token->devnum); 1595 env[i] = str[i]; i++; 1596 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1597 env[i] = str[i]; i++; 1598 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1599 token->chpid); 1600 env[i] = str[i]; i++; 1601 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1602 env[i] = str[i]; i++; 1603 break; 1604 case anev_abort: 1605 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1606 env[i] = str[i]; i++; 1607 break; 1608 case anev_reset: 1609 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1610 env[i] = str[i]; i++; 1611 break; 1612 } 1613 env[i] = NULL; 1614 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1615 } 1616 1617 struct qeth_bridge_state_data { 1618 struct work_struct worker; 1619 struct qeth_card *card; 1620 struct qeth_sbp_state_change qports; 1621 }; 1622 1623 static void qeth_bridge_state_change_worker(struct work_struct *work) 1624 { 1625 struct qeth_bridge_state_data *data = 1626 container_of(work, struct qeth_bridge_state_data, worker); 1627 /* We are only interested in the first entry - local port */ 1628 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1629 char env_locrem[32]; 1630 char env_role[32]; 1631 char env_state[32]; 1632 char *env[] = { 1633 env_locrem, 1634 env_role, 1635 env_state, 1636 NULL 1637 }; 1638 1639 /* Role should not change by itself, but if it did, */ 1640 /* information from the hardware is authoritative. */ 1641 mutex_lock(&data->card->conf_mutex); 1642 data->card->options.sbp.role = entry->role; 1643 mutex_unlock(&data->card->conf_mutex); 1644 1645 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1646 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1647 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1648 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1649 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1650 "<INVALID>"); 1651 snprintf(env_state, sizeof(env_state), "STATE=%s", 1652 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1653 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1654 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1655 "<INVALID>"); 1656 kobject_uevent_env(&data->card->gdev->dev.kobj, 1657 KOBJ_CHANGE, env); 1658 kfree(data); 1659 } 1660 1661 static void qeth_bridge_state_change(struct qeth_card *card, 1662 struct qeth_ipa_cmd *cmd) 1663 { 1664 struct qeth_sbp_state_change *qports = 1665 &cmd->data.sbp.data.state_change; 1666 struct qeth_bridge_state_data *data; 1667 int extrasize; 1668 1669 QETH_CARD_TEXT(card, 2, "brstchng"); 1670 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1671 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1672 return; 1673 } 1674 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1675 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1676 GFP_ATOMIC); 1677 if (!data) { 1678 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1679 return; 1680 } 1681 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1682 data->card = card; 1683 memcpy(&data->qports, qports, 1684 sizeof(struct qeth_sbp_state_change) + extrasize); 1685 queue_work(qeth_wq, &data->worker); 1686 } 1687 1688 struct qeth_bridge_host_data { 1689 struct work_struct worker; 1690 struct qeth_card *card; 1691 struct qeth_ipacmd_addr_change hostevs; 1692 }; 1693 1694 static void qeth_bridge_host_event_worker(struct work_struct *work) 1695 { 1696 struct qeth_bridge_host_data *data = 1697 container_of(work, struct qeth_bridge_host_data, worker); 1698 int i; 1699 1700 if (data->hostevs.lost_event_mask) { 1701 dev_info(&data->card->gdev->dev, 1702 "Address notification from the Bridge Port stopped %s (%s)\n", 1703 data->card->dev->name, 1704 (data->hostevs.lost_event_mask == 0x01) 1705 ? "Overflow" 1706 : (data->hostevs.lost_event_mask == 0x02) 1707 ? "Bridge port state change" 1708 : "Unknown reason"); 1709 mutex_lock(&data->card->conf_mutex); 1710 data->card->options.sbp.hostnotification = 0; 1711 mutex_unlock(&data->card->conf_mutex); 1712 qeth_bridge_emit_host_event(data->card, anev_abort, 1713 0, NULL, NULL); 1714 } else 1715 for (i = 0; i < data->hostevs.num_entries; i++) { 1716 struct qeth_ipacmd_addr_change_entry *entry = 1717 &data->hostevs.entry[i]; 1718 qeth_bridge_emit_host_event(data->card, 1719 anev_reg_unreg, 1720 entry->change_code, 1721 &entry->token, &entry->addr_lnid); 1722 } 1723 kfree(data); 1724 } 1725 1726 static void qeth_bridge_host_event(struct qeth_card *card, 1727 struct qeth_ipa_cmd *cmd) 1728 { 1729 struct qeth_ipacmd_addr_change *hostevs = 1730 &cmd->data.addrchange; 1731 struct qeth_bridge_host_data *data; 1732 int extrasize; 1733 1734 QETH_CARD_TEXT(card, 2, "brhostev"); 1735 if (cmd->hdr.return_code != 0x0000) { 1736 if (cmd->hdr.return_code == 0x0010) { 1737 if (hostevs->lost_event_mask == 0x00) 1738 hostevs->lost_event_mask = 0xff; 1739 } else { 1740 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1741 cmd->hdr.return_code); 1742 return; 1743 } 1744 } 1745 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1746 hostevs->num_entries; 1747 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1748 GFP_ATOMIC); 1749 if (!data) { 1750 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1751 return; 1752 } 1753 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1754 data->card = card; 1755 memcpy(&data->hostevs, hostevs, 1756 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1757 queue_work(qeth_wq, &data->worker); 1758 } 1759 1760 /* SETBRIDGEPORT support; sending commands */ 1761 1762 struct _qeth_sbp_cbctl { 1763 u16 ipa_rc; 1764 u16 cmd_rc; 1765 union { 1766 u32 supported; 1767 struct { 1768 enum qeth_sbp_roles *role; 1769 enum qeth_sbp_states *state; 1770 } qports; 1771 } data; 1772 }; 1773 1774 /** 1775 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1776 * @card: qeth_card structure pointer, for debug messages. 1777 * @cbctl: state structure with hardware return codes. 1778 * @setcmd: IPA command code 1779 * 1780 * Returns negative errno-compatible error indication or 0 on success. 1781 */ 1782 static int qeth_bridgeport_makerc(struct qeth_card *card, 1783 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1784 { 1785 int rc; 1786 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1787 1788 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1789 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1790 switch (cbctl->cmd_rc) { 1791 case 0x0000: 1792 rc = 0; 1793 break; 1794 case 0x2B04: 1795 case 0x0004: 1796 rc = -EOPNOTSUPP; 1797 break; 1798 case 0x2B0C: 1799 case 0x000C: /* Not configured as bridge Port */ 1800 rc = -ENODEV; /* maybe not the best code here? */ 1801 dev_err(&card->gdev->dev, 1802 "The device is not configured as a Bridge Port\n"); 1803 break; 1804 case 0x2B14: 1805 case 0x0014: /* Another device is Primary */ 1806 switch (setcmd) { 1807 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1808 rc = -EEXIST; 1809 dev_err(&card->gdev->dev, 1810 "The LAN already has a primary Bridge Port\n"); 1811 break; 1812 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1813 rc = -EBUSY; 1814 dev_err(&card->gdev->dev, 1815 "The device is already a primary Bridge Port\n"); 1816 break; 1817 default: 1818 rc = -EIO; 1819 } 1820 break; 1821 case 0x2B18: 1822 case 0x0018: /* This device is currently Secondary */ 1823 rc = -EBUSY; 1824 dev_err(&card->gdev->dev, 1825 "The device is already a secondary Bridge Port\n"); 1826 break; 1827 case 0x2B1C: 1828 case 0x001C: /* Limit for Secondary devices reached */ 1829 rc = -EEXIST; 1830 dev_err(&card->gdev->dev, 1831 "The LAN cannot have more secondary Bridge Ports\n"); 1832 break; 1833 case 0x2B24: 1834 case 0x0024: /* This device is currently Primary */ 1835 rc = -EBUSY; 1836 dev_err(&card->gdev->dev, 1837 "The device is already a primary Bridge Port\n"); 1838 break; 1839 case 0x2B20: 1840 case 0x0020: /* Not authorized by zManager */ 1841 rc = -EACCES; 1842 dev_err(&card->gdev->dev, 1843 "The device is not authorized to be a Bridge Port\n"); 1844 break; 1845 default: 1846 rc = -EIO; 1847 } 1848 else 1849 switch (cbctl->ipa_rc) { 1850 case IPA_RC_NOTSUPP: 1851 rc = -EOPNOTSUPP; 1852 break; 1853 case IPA_RC_UNSUPPORTED_COMMAND: 1854 rc = -EOPNOTSUPP; 1855 break; 1856 default: 1857 rc = -EIO; 1858 } 1859 1860 if (rc) { 1861 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1862 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1863 } 1864 return rc; 1865 } 1866 1867 static inline int ipa_cmd_sbp(struct qeth_card *card) 1868 { 1869 return (card->info.type == QETH_CARD_TYPE_IQD) ? 1870 IPA_CMD_SETBRIDGEPORT_IQD : 1871 IPA_CMD_SETBRIDGEPORT_OSA; 1872 } 1873 1874 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1875 struct qeth_reply *reply, unsigned long data) 1876 { 1877 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1878 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1879 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1880 cbctl->ipa_rc = cmd->hdr.return_code; 1881 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1882 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1883 cbctl->data.supported = 1884 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1885 } else { 1886 cbctl->data.supported = 0; 1887 } 1888 return 0; 1889 } 1890 1891 /** 1892 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1893 * @card: qeth_card structure pointer. 1894 * 1895 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1896 * strucutre: card->options.sbp.supported_funcs. 1897 */ 1898 static void qeth_bridgeport_query_support(struct qeth_card *card) 1899 { 1900 struct qeth_cmd_buffer *iob; 1901 struct qeth_ipa_cmd *cmd; 1902 struct _qeth_sbp_cbctl cbctl; 1903 1904 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1905 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1906 if (!iob) 1907 return; 1908 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1909 cmd->data.sbp.hdr.cmdlength = 1910 sizeof(struct qeth_ipacmd_sbp_hdr) + 1911 sizeof(struct qeth_sbp_query_cmds_supp); 1912 cmd->data.sbp.hdr.command_code = 1913 IPA_SBP_QUERY_COMMANDS_SUPPORTED; 1914 cmd->data.sbp.hdr.used_total = 1; 1915 cmd->data.sbp.hdr.seq_no = 1; 1916 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1917 (void *)&cbctl) || 1918 qeth_bridgeport_makerc(card, &cbctl, 1919 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1920 /* non-zero makerc signifies failure, and produce messages */ 1921 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1922 return; 1923 } 1924 card->options.sbp.supported_funcs = cbctl.data.supported; 1925 } 1926 1927 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1928 struct qeth_reply *reply, unsigned long data) 1929 { 1930 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1931 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1932 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1933 1934 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1935 cbctl->ipa_rc = cmd->hdr.return_code; 1936 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1937 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1938 return 0; 1939 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1940 cbctl->cmd_rc = 0xffff; 1941 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1942 return 0; 1943 } 1944 /* first entry contains the state of the local port */ 1945 if (qports->num_entries > 0) { 1946 if (cbctl->data.qports.role) 1947 *cbctl->data.qports.role = qports->entry[0].role; 1948 if (cbctl->data.qports.state) 1949 *cbctl->data.qports.state = qports->entry[0].state; 1950 } 1951 return 0; 1952 } 1953 1954 /** 1955 * qeth_bridgeport_query_ports() - query local bridgeport status. 1956 * @card: qeth_card structure pointer. 1957 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1958 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1959 * 1960 * Returns negative errno-compatible error indication or 0 on success. 1961 * 1962 * 'role' and 'state' are not updated in case of hardware operation failure. 1963 */ 1964 int qeth_bridgeport_query_ports(struct qeth_card *card, 1965 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1966 { 1967 int rc = 0; 1968 struct qeth_cmd_buffer *iob; 1969 struct qeth_ipa_cmd *cmd; 1970 struct _qeth_sbp_cbctl cbctl = { 1971 .data = { 1972 .qports = { 1973 .role = role, 1974 .state = state, 1975 }, 1976 }, 1977 }; 1978 1979 QETH_CARD_TEXT(card, 2, "brqports"); 1980 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1981 return -EOPNOTSUPP; 1982 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1983 if (!iob) 1984 return -ENOMEM; 1985 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1986 cmd->data.sbp.hdr.cmdlength = 1987 sizeof(struct qeth_ipacmd_sbp_hdr); 1988 cmd->data.sbp.hdr.command_code = 1989 IPA_SBP_QUERY_BRIDGE_PORTS; 1990 cmd->data.sbp.hdr.used_total = 1; 1991 cmd->data.sbp.hdr.seq_no = 1; 1992 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1993 (void *)&cbctl); 1994 if (rc < 0) 1995 return rc; 1996 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1997 } 1998 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1999 2000 static int qeth_bridgeport_set_cb(struct qeth_card *card, 2001 struct qeth_reply *reply, unsigned long data) 2002 { 2003 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 2004 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 2005 QETH_CARD_TEXT(card, 2, "brsetrcb"); 2006 cbctl->ipa_rc = cmd->hdr.return_code; 2007 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 2008 return 0; 2009 } 2010 2011 /** 2012 * qeth_bridgeport_setrole() - Assign primary role to the port. 2013 * @card: qeth_card structure pointer. 2014 * @role: Role to assign. 2015 * 2016 * Returns negative errno-compatible error indication or 0 on success. 2017 */ 2018 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 2019 { 2020 int rc = 0; 2021 int cmdlength; 2022 struct qeth_cmd_buffer *iob; 2023 struct qeth_ipa_cmd *cmd; 2024 struct _qeth_sbp_cbctl cbctl; 2025 enum qeth_ipa_sbp_cmd setcmd; 2026 2027 QETH_CARD_TEXT(card, 2, "brsetrol"); 2028 switch (role) { 2029 case QETH_SBP_ROLE_NONE: 2030 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 2031 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2032 sizeof(struct qeth_sbp_reset_role); 2033 break; 2034 case QETH_SBP_ROLE_PRIMARY: 2035 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 2036 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2037 sizeof(struct qeth_sbp_set_primary); 2038 break; 2039 case QETH_SBP_ROLE_SECONDARY: 2040 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 2041 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 2042 sizeof(struct qeth_sbp_set_secondary); 2043 break; 2044 default: 2045 return -EINVAL; 2046 } 2047 if (!(card->options.sbp.supported_funcs & setcmd)) 2048 return -EOPNOTSUPP; 2049 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 2050 if (!iob) 2051 return -ENOMEM; 2052 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 2053 cmd->data.sbp.hdr.cmdlength = cmdlength; 2054 cmd->data.sbp.hdr.command_code = setcmd; 2055 cmd->data.sbp.hdr.used_total = 1; 2056 cmd->data.sbp.hdr.seq_no = 1; 2057 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 2058 (void *)&cbctl); 2059 if (rc < 0) 2060 return rc; 2061 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 2062 } 2063 2064 /** 2065 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 2066 * @card: qeth_card structure pointer, for debug messages. 2067 * 2068 * Returns negative errno-compatible error indication or 0 on success. 2069 */ 2070 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 2071 { 2072 int rc; 2073 2074 if (pnso_rc == 0) 2075 switch (response) { 2076 case 0x0001: 2077 rc = 0; 2078 break; 2079 case 0x0004: 2080 case 0x0100: 2081 case 0x0106: 2082 rc = -EOPNOTSUPP; 2083 dev_err(&card->gdev->dev, 2084 "Setting address notification failed\n"); 2085 break; 2086 case 0x0107: 2087 rc = -EAGAIN; 2088 break; 2089 default: 2090 rc = -EIO; 2091 } 2092 else 2093 rc = -EIO; 2094 2095 if (rc) { 2096 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 2097 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 2098 } 2099 return rc; 2100 } 2101 2102 static void qeth_bridgeport_an_set_cb(void *priv, 2103 enum qdio_brinfo_entry_type type, void *entry) 2104 { 2105 struct qeth_card *card = (struct qeth_card *)priv; 2106 struct qdio_brinfo_entry_l2 *l2entry; 2107 u8 code; 2108 2109 if (type != l2_addr_lnid) { 2110 WARN_ON_ONCE(1); 2111 return; 2112 } 2113 2114 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 2115 code = IPA_ADDR_CHANGE_CODE_MACADDR; 2116 if (l2entry->addr_lnid.lnid) 2117 code |= IPA_ADDR_CHANGE_CODE_VLANID; 2118 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 2119 (struct net_if_token *)&l2entry->nit, 2120 (struct mac_addr_lnid *)&l2entry->addr_lnid); 2121 } 2122 2123 /** 2124 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 2125 * @card: qeth_card structure pointer. 2126 * @enable: 0 - disable, non-zero - enable notifications 2127 * 2128 * Returns negative errno-compatible error indication or 0 on success. 2129 * 2130 * On enable, emits a series of address notifications udev events for all 2131 * currently registered hosts. 2132 */ 2133 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2134 { 2135 int rc; 2136 u16 response; 2137 struct ccw_device *ddev; 2138 struct subchannel_id schid; 2139 2140 if (!card) 2141 return -EINVAL; 2142 if (!card->options.sbp.supported_funcs) 2143 return -EOPNOTSUPP; 2144 ddev = CARD_DDEV(card); 2145 ccw_device_get_schid(ddev, &schid); 2146 2147 if (enable) { 2148 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2149 rc = qdio_pnso_brinfo(schid, 1, &response, 2150 qeth_bridgeport_an_set_cb, card); 2151 } else 2152 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2153 return qeth_anset_makerc(card, rc, response); 2154 } 2155 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2156 2157 module_init(qeth_l2_init); 2158 module_exit(qeth_l2_exit); 2159 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2160 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2161 MODULE_LICENSE("GPL"); 2162