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/ip.h> 20 #include <linux/list.h> 21 #include <linux/hash.h> 22 #include <linux/hashtable.h> 23 #include <linux/string.h> 24 #include "qeth_core.h" 25 #include "qeth_l2.h" 26 27 static int qeth_l2_set_offline(struct ccwgroup_device *); 28 static int qeth_l2_stop(struct net_device *); 29 static void qeth_l2_set_rx_mode(struct net_device *); 30 static void qeth_bridgeport_query_support(struct qeth_card *card); 31 static void qeth_bridge_state_change(struct qeth_card *card, 32 struct qeth_ipa_cmd *cmd); 33 static void qeth_bridge_host_event(struct qeth_card *card, 34 struct qeth_ipa_cmd *cmd); 35 36 static int qeth_l2_verify_dev(struct net_device *dev) 37 { 38 struct qeth_card *card; 39 unsigned long flags; 40 int rc = 0; 41 42 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 43 list_for_each_entry(card, &qeth_core_card_list.list, list) { 44 if (card->dev == dev) { 45 rc = QETH_REAL_CARD; 46 break; 47 } 48 } 49 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 50 51 return rc; 52 } 53 54 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 55 { 56 struct qeth_card *card; 57 struct net_device *ndev; 58 __u16 temp_dev_no; 59 unsigned long flags; 60 struct ccw_dev_id read_devid; 61 62 ndev = NULL; 63 memcpy(&temp_dev_no, read_dev_no, 2); 64 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 65 list_for_each_entry(card, &qeth_core_card_list.list, list) { 66 ccw_device_get_id(CARD_RDEV(card), &read_devid); 67 if (read_devid.devno == temp_dev_no) { 68 ndev = card->dev; 69 break; 70 } 71 } 72 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 73 return ndev; 74 } 75 76 static int qeth_setdel_makerc(struct qeth_card *card, int retcode) 77 { 78 int rc; 79 80 if (retcode) 81 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 82 switch (retcode) { 83 case IPA_RC_SUCCESS: 84 rc = 0; 85 break; 86 case IPA_RC_L2_UNSUPPORTED_CMD: 87 rc = -EOPNOTSUPP; 88 break; 89 case IPA_RC_L2_ADDR_TABLE_FULL: 90 rc = -ENOSPC; 91 break; 92 case IPA_RC_L2_DUP_MAC: 93 case IPA_RC_L2_DUP_LAYER3_MAC: 94 rc = -EEXIST; 95 break; 96 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 97 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 98 rc = -EPERM; 99 break; 100 case IPA_RC_L2_MAC_NOT_FOUND: 101 rc = -ENOENT; 102 break; 103 case -ENOMEM: 104 rc = -ENOMEM; 105 break; 106 default: 107 rc = -EIO; 108 break; 109 } 110 return rc; 111 } 112 113 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 114 enum qeth_ipa_cmds ipacmd) 115 { 116 struct qeth_ipa_cmd *cmd; 117 struct qeth_cmd_buffer *iob; 118 119 QETH_CARD_TEXT(card, 2, "L2sdmac"); 120 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 121 if (!iob) 122 return -ENOMEM; 123 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 124 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 125 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 126 return qeth_setdel_makerc(card, qeth_send_ipa_cmd(card, iob, 127 NULL, NULL)); 128 } 129 130 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 131 { 132 int rc; 133 134 QETH_CARD_TEXT(card, 2, "L2Setmac"); 135 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 136 if (rc == 0) { 137 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 138 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN); 139 dev_info(&card->gdev->dev, 140 "MAC address %pM successfully registered on device %s\n", 141 card->dev->dev_addr, card->dev->name); 142 } else { 143 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 144 switch (rc) { 145 case -EEXIST: 146 dev_warn(&card->gdev->dev, 147 "MAC address %pM already exists\n", mac); 148 break; 149 case -EPERM: 150 dev_warn(&card->gdev->dev, 151 "MAC address %pM is not authorized\n", mac); 152 break; 153 } 154 } 155 return rc; 156 } 157 158 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 159 { 160 int rc; 161 162 QETH_CARD_TEXT(card, 2, "L2Delmac"); 163 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 164 return 0; 165 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC); 166 if (rc == 0) 167 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 168 return rc; 169 } 170 171 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) 172 { 173 int rc; 174 175 QETH_CARD_TEXT(card, 2, "L2Sgmac"); 176 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC); 177 if (rc == -EEXIST) 178 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n", 179 mac, QETH_CARD_IFNAME(card)); 180 else if (rc) 181 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n", 182 mac, QETH_CARD_IFNAME(card), rc); 183 return rc; 184 } 185 186 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) 187 { 188 int rc; 189 190 QETH_CARD_TEXT(card, 2, "L2Dgmac"); 191 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC); 192 if (rc) 193 QETH_DBF_MESSAGE(2, 194 "Could not delete group MAC %pM on %s: %d\n", 195 mac, QETH_CARD_IFNAME(card), rc); 196 return rc; 197 } 198 199 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac) 200 { 201 if (mac->is_uc) { 202 return qeth_l2_send_setdelmac(card, mac->mac_addr, 203 IPA_CMD_SETVMAC); 204 } else { 205 return qeth_l2_send_setgroupmac(card, mac->mac_addr); 206 } 207 } 208 209 static int qeth_l2_remove_mac(struct qeth_card *card, struct qeth_mac *mac) 210 { 211 if (mac->is_uc) { 212 return qeth_l2_send_setdelmac(card, mac->mac_addr, 213 IPA_CMD_DELVMAC); 214 } else { 215 return qeth_l2_send_delgroupmac(card, mac->mac_addr); 216 } 217 } 218 219 static void qeth_l2_del_all_macs(struct qeth_card *card) 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 hash_del(&mac->hnode); 228 kfree(mac); 229 } 230 spin_unlock_bh(&card->mclock); 231 } 232 233 static inline u32 qeth_l2_mac_hash(const u8 *addr) 234 { 235 return get_unaligned((u32 *)(&addr[2])); 236 } 237 238 static inline int qeth_l2_get_cast_type(struct qeth_card *card, 239 struct sk_buff *skb) 240 { 241 if (card->info.type == QETH_CARD_TYPE_OSN) 242 return RTN_UNSPEC; 243 if (is_broadcast_ether_addr(skb->data)) 244 return RTN_BROADCAST; 245 if (is_multicast_ether_addr(skb->data)) 246 return RTN_MULTICAST; 247 return RTN_UNSPEC; 248 } 249 250 static inline void qeth_l2_hdr_csum(struct qeth_card *card, 251 struct qeth_hdr *hdr, struct sk_buff *skb) 252 { 253 struct iphdr *iph = ip_hdr(skb); 254 255 /* tcph->check contains already the pseudo hdr checksum 256 * so just set the header flags 257 */ 258 if (iph->protocol == IPPROTO_UDP) 259 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; 260 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 261 QETH_HDR_EXT_CSUM_HDR_REQ; 262 iph->check = 0; 263 if (card->options.performance_stats) 264 card->perf_stats.tx_csum++; 265 } 266 267 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 268 struct sk_buff *skb, int cast_type) 269 { 270 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 271 272 memset(hdr, 0, sizeof(struct qeth_hdr)); 273 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 274 275 /* set byte byte 3 to casting flags */ 276 if (cast_type == RTN_MULTICAST) 277 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 278 else if (cast_type == RTN_BROADCAST) 279 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 280 else 281 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 282 283 hdr->hdr.l2.pkt_length = skb->len - sizeof(struct qeth_hdr); 284 /* VSWITCH relies on the VLAN 285 * information to be present in 286 * the QDIO header */ 287 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 288 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 289 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 290 } 291 } 292 293 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 294 struct qeth_reply *reply, unsigned long data) 295 { 296 struct qeth_ipa_cmd *cmd; 297 298 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 299 cmd = (struct qeth_ipa_cmd *) data; 300 if (cmd->hdr.return_code) { 301 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. " 302 "Continuing\n", cmd->data.setdelvlan.vlan_id, 303 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 304 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 305 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 306 } 307 return 0; 308 } 309 310 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 311 enum qeth_ipa_cmds ipacmd) 312 { 313 struct qeth_ipa_cmd *cmd; 314 struct qeth_cmd_buffer *iob; 315 316 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 317 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 318 if (!iob) 319 return -ENOMEM; 320 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 321 cmd->data.setdelvlan.vlan_id = i; 322 return qeth_send_ipa_cmd(card, iob, 323 qeth_l2_send_setdelvlan_cb, NULL); 324 } 325 326 static void qeth_l2_process_vlans(struct qeth_card *card) 327 { 328 struct qeth_vlan_vid *id; 329 QETH_CARD_TEXT(card, 3, "L2prcvln"); 330 spin_lock_bh(&card->vlanlock); 331 list_for_each_entry(id, &card->vid_list, list) { 332 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 333 } 334 spin_unlock_bh(&card->vlanlock); 335 } 336 337 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 338 __be16 proto, u16 vid) 339 { 340 struct qeth_card *card = dev->ml_priv; 341 struct qeth_vlan_vid *id; 342 int rc; 343 344 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 345 if (!vid) 346 return 0; 347 if (card->info.type == QETH_CARD_TYPE_OSM) { 348 QETH_CARD_TEXT(card, 3, "aidOSM"); 349 return 0; 350 } 351 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 352 QETH_CARD_TEXT(card, 3, "aidREC"); 353 return 0; 354 } 355 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 356 if (id) { 357 id->vid = vid; 358 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 359 if (rc) { 360 kfree(id); 361 return rc; 362 } 363 spin_lock_bh(&card->vlanlock); 364 list_add_tail(&id->list, &card->vid_list); 365 spin_unlock_bh(&card->vlanlock); 366 } else { 367 return -ENOMEM; 368 } 369 return 0; 370 } 371 372 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 373 __be16 proto, u16 vid) 374 { 375 struct qeth_vlan_vid *id, *tmpid = NULL; 376 struct qeth_card *card = dev->ml_priv; 377 int rc = 0; 378 379 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 380 if (card->info.type == QETH_CARD_TYPE_OSM) { 381 QETH_CARD_TEXT(card, 3, "kidOSM"); 382 return 0; 383 } 384 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 385 QETH_CARD_TEXT(card, 3, "kidREC"); 386 return 0; 387 } 388 spin_lock_bh(&card->vlanlock); 389 list_for_each_entry(id, &card->vid_list, list) { 390 if (id->vid == vid) { 391 list_del(&id->list); 392 tmpid = id; 393 break; 394 } 395 } 396 spin_unlock_bh(&card->vlanlock); 397 if (tmpid) { 398 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 399 kfree(tmpid); 400 } 401 qeth_l2_set_rx_mode(card->dev); 402 return rc; 403 } 404 405 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 406 { 407 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 408 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 409 410 qeth_set_allowed_threads(card, 0, 1); 411 if (card->read.state == CH_STATE_UP && 412 card->write.state == CH_STATE_UP && 413 (card->state == CARD_STATE_UP)) { 414 if (recovery_mode && 415 card->info.type != QETH_CARD_TYPE_OSN) { 416 qeth_l2_stop(card->dev); 417 } else { 418 rtnl_lock(); 419 dev_close(card->dev); 420 rtnl_unlock(); 421 } 422 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 423 card->state = CARD_STATE_SOFTSETUP; 424 } 425 if (card->state == CARD_STATE_SOFTSETUP) { 426 qeth_l2_del_all_macs(card); 427 qeth_clear_ipacmd_list(card); 428 card->state = CARD_STATE_HARDSETUP; 429 } 430 if (card->state == CARD_STATE_HARDSETUP) { 431 qeth_qdio_clear_card(card, 0); 432 qeth_clear_qdio_buffers(card); 433 qeth_clear_working_pool_list(card); 434 card->state = CARD_STATE_DOWN; 435 } 436 if (card->state == CARD_STATE_DOWN) { 437 qeth_clear_cmd_buffers(&card->read); 438 qeth_clear_cmd_buffers(&card->write); 439 } 440 } 441 442 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 443 int budget, int *done) 444 { 445 int work_done = 0; 446 struct sk_buff *skb; 447 struct qeth_hdr *hdr; 448 unsigned int len; 449 450 *done = 0; 451 WARN_ON_ONCE(!budget); 452 while (budget) { 453 skb = qeth_core_get_next_skb(card, 454 &card->qdio.in_q->bufs[card->rx.b_index], 455 &card->rx.b_element, &card->rx.e_offset, &hdr); 456 if (!skb) { 457 *done = 1; 458 break; 459 } 460 skb->dev = card->dev; 461 switch (hdr->hdr.l2.id) { 462 case QETH_HEADER_TYPE_LAYER2: 463 skb->pkt_type = PACKET_HOST; 464 skb->protocol = eth_type_trans(skb, skb->dev); 465 if ((card->dev->features & NETIF_F_RXCSUM) 466 && ((hdr->hdr.l2.flags[1] & 467 (QETH_HDR_EXT_CSUM_HDR_REQ | 468 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 469 (QETH_HDR_EXT_CSUM_HDR_REQ | 470 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 471 skb->ip_summed = CHECKSUM_UNNECESSARY; 472 else 473 skb->ip_summed = CHECKSUM_NONE; 474 if (skb->protocol == htons(ETH_P_802_2)) 475 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 476 len = skb->len; 477 napi_gro_receive(&card->napi, skb); 478 break; 479 case QETH_HEADER_TYPE_OSN: 480 if (card->info.type == QETH_CARD_TYPE_OSN) { 481 skb_push(skb, sizeof(struct qeth_hdr)); 482 skb_copy_to_linear_data(skb, hdr, 483 sizeof(struct qeth_hdr)); 484 len = skb->len; 485 card->osn_info.data_cb(skb); 486 break; 487 } 488 /* else unknown */ 489 default: 490 dev_kfree_skb_any(skb); 491 QETH_CARD_TEXT(card, 3, "inbunkno"); 492 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 493 continue; 494 } 495 work_done++; 496 budget--; 497 card->stats.rx_packets++; 498 card->stats.rx_bytes += len; 499 } 500 return work_done; 501 } 502 503 static int qeth_l2_request_initial_mac(struct qeth_card *card) 504 { 505 int rc = 0; 506 char vendor_pre[] = {0x02, 0x00, 0x00}; 507 508 QETH_DBF_TEXT(SETUP, 2, "doL2init"); 509 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 510 511 if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { 512 rc = qeth_query_setadapterparms(card); 513 if (rc) { 514 QETH_DBF_MESSAGE(2, "could not query adapter " 515 "parameters on device %s: x%x\n", 516 CARD_BUS_ID(card), rc); 517 } 518 } 519 520 if (card->info.type == QETH_CARD_TYPE_IQD || 521 card->info.type == QETH_CARD_TYPE_OSM || 522 card->info.type == QETH_CARD_TYPE_OSX || 523 card->info.guestlan) { 524 rc = qeth_setadpparms_change_macaddr(card); 525 if (rc) { 526 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 527 "device %s: x%x\n", CARD_BUS_ID(card), rc); 528 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 529 return rc; 530 } 531 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN); 532 } else { 533 eth_random_addr(card->dev->dev_addr); 534 memcpy(card->dev->dev_addr, vendor_pre, 3); 535 } 536 return 0; 537 } 538 539 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 540 { 541 struct sockaddr *addr = p; 542 struct qeth_card *card = dev->ml_priv; 543 int rc = 0; 544 545 QETH_CARD_TEXT(card, 3, "setmac"); 546 547 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { 548 QETH_CARD_TEXT(card, 3, "setmcINV"); 549 return -EOPNOTSUPP; 550 } 551 552 if (card->info.type == QETH_CARD_TYPE_OSN || 553 card->info.type == QETH_CARD_TYPE_OSM || 554 card->info.type == QETH_CARD_TYPE_OSX) { 555 QETH_CARD_TEXT(card, 3, "setmcTYP"); 556 return -EOPNOTSUPP; 557 } 558 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN); 559 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 560 QETH_CARD_TEXT(card, 3, "setmcREC"); 561 return -ERESTARTSYS; 562 } 563 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 564 if (!rc || (rc == -ENOENT)) 565 rc = qeth_l2_send_setmac(card, addr->sa_data); 566 return rc ? -EINVAL : 0; 567 } 568 569 static void qeth_promisc_to_bridge(struct qeth_card *card) 570 { 571 struct net_device *dev = card->dev; 572 enum qeth_ipa_promisc_modes promisc_mode; 573 int role; 574 int rc; 575 576 QETH_CARD_TEXT(card, 3, "pmisc2br"); 577 578 if (!card->options.sbp.reflect_promisc) 579 return; 580 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 581 : SET_PROMISC_MODE_OFF; 582 if (promisc_mode == card->info.promisc_mode) 583 return; 584 585 if (promisc_mode == SET_PROMISC_MODE_ON) { 586 if (card->options.sbp.reflect_promisc_primary) 587 role = QETH_SBP_ROLE_PRIMARY; 588 else 589 role = QETH_SBP_ROLE_SECONDARY; 590 } else 591 role = QETH_SBP_ROLE_NONE; 592 593 rc = qeth_bridgeport_setrole(card, role); 594 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 595 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 596 if (!rc) { 597 card->options.sbp.role = role; 598 card->info.promisc_mode = promisc_mode; 599 } 600 601 } 602 /* New MAC address is added to the hash table and marked to be written on card 603 * only if there is not in the hash table storage already 604 * 605 */ 606 static void 607 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc) 608 { 609 struct qeth_mac *mac; 610 611 hash_for_each_possible(card->mac_htable, mac, hnode, 612 qeth_l2_mac_hash(ha->addr)) { 613 if (is_uc == mac->is_uc && 614 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) { 615 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 616 return; 617 } 618 } 619 620 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 621 622 if (!mac) 623 return; 624 625 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN); 626 mac->is_uc = is_uc; 627 mac->disp_flag = QETH_DISP_ADDR_ADD; 628 629 hash_add(card->mac_htable, &mac->hnode, 630 qeth_l2_mac_hash(mac->mac_addr)); 631 632 } 633 634 static void qeth_l2_set_rx_mode(struct net_device *dev) 635 { 636 struct qeth_card *card = dev->ml_priv; 637 struct netdev_hw_addr *ha; 638 struct qeth_mac *mac; 639 struct hlist_node *tmp; 640 int i; 641 int rc; 642 643 if (card->info.type == QETH_CARD_TYPE_OSN) 644 return; 645 646 QETH_CARD_TEXT(card, 3, "setmulti"); 647 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 648 (card->state != CARD_STATE_UP)) 649 return; 650 651 spin_lock_bh(&card->mclock); 652 653 netdev_for_each_mc_addr(ha, dev) 654 qeth_l2_add_mac(card, ha, 0); 655 656 netdev_for_each_uc_addr(ha, dev) 657 qeth_l2_add_mac(card, ha, 1); 658 659 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 660 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) { 661 qeth_l2_remove_mac(card, mac); 662 hash_del(&mac->hnode); 663 kfree(mac); 664 665 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) { 666 rc = qeth_l2_write_mac(card, mac); 667 if (rc) { 668 hash_del(&mac->hnode); 669 kfree(mac); 670 } else 671 mac->disp_flag = QETH_DISP_ADDR_DELETE; 672 } else 673 mac->disp_flag = QETH_DISP_ADDR_DELETE; 674 } 675 676 spin_unlock_bh(&card->mclock); 677 678 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 679 qeth_setadp_promisc_mode(card); 680 else 681 qeth_promisc_to_bridge(card); 682 } 683 684 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 685 struct net_device *dev) 686 { 687 int rc; 688 struct qeth_hdr *hdr = NULL; 689 int elements = 0; 690 struct qeth_card *card = dev->ml_priv; 691 struct sk_buff *new_skb = skb; 692 int cast_type = qeth_l2_get_cast_type(card, skb); 693 struct qeth_qdio_out_q *queue; 694 int tx_bytes = skb->len; 695 int data_offset = -1; 696 int elements_needed = 0; 697 int hd_len = 0; 698 int nr_frags; 699 700 if (card->qdio.do_prio_queueing || (cast_type && 701 card->info.is_multicast_different)) 702 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 703 qeth_get_ip_version(skb), cast_type)]; 704 else 705 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 706 707 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 708 card->stats.tx_carrier_errors++; 709 goto tx_drop; 710 } 711 712 if ((card->info.type == QETH_CARD_TYPE_OSN) && 713 (skb->protocol == htons(ETH_P_IPV6))) 714 goto tx_drop; 715 716 if (card->options.performance_stats) { 717 card->perf_stats.outbound_cnt++; 718 card->perf_stats.outbound_start_time = qeth_get_micros(); 719 } 720 netif_stop_queue(dev); 721 722 /* fix hardware limitation: as long as we do not have sbal 723 * chaining we can not send long frag lists 724 */ 725 if ((card->info.type != QETH_CARD_TYPE_IQD) && 726 !qeth_get_elements_no(card, new_skb, 0, 0)) { 727 int lin_rc = skb_linearize(new_skb); 728 729 if (card->options.performance_stats) { 730 if (lin_rc) 731 card->perf_stats.tx_linfail++; 732 else 733 card->perf_stats.tx_lin++; 734 } 735 if (lin_rc) 736 goto tx_drop; 737 } 738 739 if (card->info.type == QETH_CARD_TYPE_OSN) 740 hdr = (struct qeth_hdr *)skb->data; 741 else { 742 if (card->info.type == QETH_CARD_TYPE_IQD) { 743 new_skb = skb; 744 data_offset = ETH_HLEN; 745 hd_len = ETH_HLEN; 746 hdr = kmem_cache_alloc(qeth_core_header_cache, 747 GFP_ATOMIC); 748 if (!hdr) 749 goto tx_drop; 750 elements_needed++; 751 skb_reset_mac_header(new_skb); 752 qeth_l2_fill_header(card, hdr, new_skb, cast_type); 753 hdr->hdr.l2.pkt_length = new_skb->len; 754 memcpy(((char *)hdr) + sizeof(struct qeth_hdr), 755 skb_mac_header(new_skb), ETH_HLEN); 756 } else { 757 /* create a clone with writeable headroom */ 758 new_skb = skb_realloc_headroom(skb, 759 sizeof(struct qeth_hdr)); 760 if (!new_skb) 761 goto tx_drop; 762 hdr = (struct qeth_hdr *)skb_push(new_skb, 763 sizeof(struct qeth_hdr)); 764 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr)); 765 qeth_l2_fill_header(card, hdr, new_skb, cast_type); 766 if (new_skb->ip_summed == CHECKSUM_PARTIAL) 767 qeth_l2_hdr_csum(card, hdr, new_skb); 768 } 769 } 770 771 elements = qeth_get_elements_no(card, new_skb, elements_needed, 772 (data_offset > 0) ? data_offset : 0); 773 if (!elements) { 774 if (data_offset >= 0) 775 kmem_cache_free(qeth_core_header_cache, hdr); 776 goto tx_drop; 777 } 778 779 if (card->info.type != QETH_CARD_TYPE_IQD) { 780 if (qeth_hdr_chk_and_bounce(new_skb, &hdr, 781 sizeof(struct qeth_hdr_layer2))) 782 goto tx_drop; 783 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 784 elements); 785 } else 786 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 787 data_offset, hd_len); 788 if (!rc) { 789 card->stats.tx_packets++; 790 card->stats.tx_bytes += tx_bytes; 791 if (card->options.performance_stats) { 792 nr_frags = skb_shinfo(new_skb)->nr_frags; 793 if (nr_frags) { 794 card->perf_stats.sg_skbs_sent++; 795 /* nr_frags + skb->data */ 796 card->perf_stats.sg_frags_sent += nr_frags + 1; 797 } 798 } 799 if (new_skb != skb) 800 dev_kfree_skb_any(skb); 801 rc = NETDEV_TX_OK; 802 } else { 803 if (data_offset >= 0) 804 kmem_cache_free(qeth_core_header_cache, hdr); 805 806 if (rc == -EBUSY) { 807 if (new_skb != skb) 808 dev_kfree_skb_any(new_skb); 809 return NETDEV_TX_BUSY; 810 } else 811 goto tx_drop; 812 } 813 814 netif_wake_queue(dev); 815 if (card->options.performance_stats) 816 card->perf_stats.outbound_time += qeth_get_micros() - 817 card->perf_stats.outbound_start_time; 818 return rc; 819 820 tx_drop: 821 card->stats.tx_dropped++; 822 card->stats.tx_errors++; 823 if ((new_skb != skb) && new_skb) 824 dev_kfree_skb_any(new_skb); 825 dev_kfree_skb_any(skb); 826 netif_wake_queue(dev); 827 return NETDEV_TX_OK; 828 } 829 830 static int __qeth_l2_open(struct net_device *dev) 831 { 832 struct qeth_card *card = dev->ml_priv; 833 int rc = 0; 834 835 QETH_CARD_TEXT(card, 4, "qethopen"); 836 if (card->state == CARD_STATE_UP) 837 return rc; 838 if (card->state != CARD_STATE_SOFTSETUP) 839 return -ENODEV; 840 841 if ((card->info.type != QETH_CARD_TYPE_OSN) && 842 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 843 QETH_CARD_TEXT(card, 4, "nomacadr"); 844 return -EPERM; 845 } 846 card->data.state = CH_STATE_UP; 847 card->state = CARD_STATE_UP; 848 netif_start_queue(dev); 849 850 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 851 napi_enable(&card->napi); 852 napi_schedule(&card->napi); 853 } else 854 rc = -EIO; 855 return rc; 856 } 857 858 static int qeth_l2_open(struct net_device *dev) 859 { 860 struct qeth_card *card = dev->ml_priv; 861 862 QETH_CARD_TEXT(card, 5, "qethope_"); 863 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 864 QETH_CARD_TEXT(card, 3, "openREC"); 865 return -ERESTARTSYS; 866 } 867 return __qeth_l2_open(dev); 868 } 869 870 static int qeth_l2_stop(struct net_device *dev) 871 { 872 struct qeth_card *card = dev->ml_priv; 873 874 QETH_CARD_TEXT(card, 4, "qethstop"); 875 netif_tx_disable(dev); 876 if (card->state == CARD_STATE_UP) { 877 card->state = CARD_STATE_SOFTSETUP; 878 napi_disable(&card->napi); 879 } 880 return 0; 881 } 882 883 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 884 { 885 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 886 887 qeth_l2_create_device_attributes(&gdev->dev); 888 INIT_LIST_HEAD(&card->vid_list); 889 hash_init(card->mac_htable); 890 card->options.layer2 = 1; 891 card->info.hwtrap = 0; 892 return 0; 893 } 894 895 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 896 { 897 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 898 899 qeth_l2_remove_device_attributes(&cgdev->dev); 900 qeth_set_allowed_threads(card, 0, 1); 901 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 902 903 if (cgdev->state == CCWGROUP_ONLINE) 904 qeth_l2_set_offline(cgdev); 905 906 if (card->dev) { 907 netif_napi_del(&card->napi); 908 unregister_netdev(card->dev); 909 card->dev = NULL; 910 } 911 return; 912 } 913 914 static const struct ethtool_ops qeth_l2_ethtool_ops = { 915 .get_link = ethtool_op_get_link, 916 .get_strings = qeth_core_get_strings, 917 .get_ethtool_stats = qeth_core_get_ethtool_stats, 918 .get_sset_count = qeth_core_get_sset_count, 919 .get_drvinfo = qeth_core_get_drvinfo, 920 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 921 }; 922 923 static const struct ethtool_ops qeth_l2_osn_ops = { 924 .get_strings = qeth_core_get_strings, 925 .get_ethtool_stats = qeth_core_get_ethtool_stats, 926 .get_sset_count = qeth_core_get_sset_count, 927 .get_drvinfo = qeth_core_get_drvinfo, 928 }; 929 930 static const struct net_device_ops qeth_l2_netdev_ops = { 931 .ndo_open = qeth_l2_open, 932 .ndo_stop = qeth_l2_stop, 933 .ndo_get_stats = qeth_get_stats, 934 .ndo_start_xmit = qeth_l2_hard_start_xmit, 935 .ndo_validate_addr = eth_validate_addr, 936 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 937 .ndo_do_ioctl = qeth_do_ioctl, 938 .ndo_set_mac_address = qeth_l2_set_mac_address, 939 .ndo_change_mtu = qeth_change_mtu, 940 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 941 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 942 .ndo_tx_timeout = qeth_tx_timeout, 943 .ndo_fix_features = qeth_fix_features, 944 .ndo_set_features = qeth_set_features 945 }; 946 947 static int qeth_l2_setup_netdev(struct qeth_card *card) 948 { 949 switch (card->info.type) { 950 case QETH_CARD_TYPE_IQD: 951 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 952 ether_setup); 953 break; 954 case QETH_CARD_TYPE_OSN: 955 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 956 ether_setup); 957 card->dev->flags |= IFF_NOARP; 958 break; 959 default: 960 card->dev = alloc_etherdev(0); 961 } 962 963 if (!card->dev) 964 return -ENODEV; 965 966 card->dev->ml_priv = card; 967 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 968 card->dev->mtu = card->info.initial_mtu; 969 card->dev->min_mtu = 64; 970 card->dev->max_mtu = ETH_MAX_MTU; 971 card->dev->netdev_ops = &qeth_l2_netdev_ops; 972 card->dev->ethtool_ops = 973 (card->info.type != QETH_CARD_TYPE_OSN) ? 974 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops; 975 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 976 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 977 card->dev->hw_features = NETIF_F_SG; 978 card->dev->vlan_features = NETIF_F_SG; 979 /* OSA 3S and earlier has no RX/TX support */ 980 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 981 card->dev->hw_features |= NETIF_F_IP_CSUM; 982 card->dev->vlan_features |= NETIF_F_IP_CSUM; 983 } 984 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 985 card->dev->hw_features |= NETIF_F_RXCSUM; 986 card->dev->vlan_features |= NETIF_F_RXCSUM; 987 } 988 } 989 card->info.broadcast_capable = 1; 990 qeth_l2_request_initial_mac(card); 991 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) * 992 PAGE_SIZE; 993 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 994 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 995 netif_carrier_off(card->dev); 996 return register_netdev(card->dev); 997 } 998 999 static int qeth_l2_start_ipassists(struct qeth_card *card) 1000 { 1001 /* configure isolation level */ 1002 if (qeth_set_access_ctrl_online(card, 0)) 1003 return -ENODEV; 1004 return 0; 1005 } 1006 1007 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1008 { 1009 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1010 int rc = 0; 1011 enum qeth_card_states recover_flag; 1012 1013 mutex_lock(&card->discipline_mutex); 1014 mutex_lock(&card->conf_mutex); 1015 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1016 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1017 1018 recover_flag = card->state; 1019 rc = qeth_core_hardsetup_card(card); 1020 if (rc) { 1021 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1022 rc = -ENODEV; 1023 goto out_remove; 1024 } 1025 qeth_bridgeport_query_support(card); 1026 if (card->options.sbp.supported_funcs) 1027 dev_info(&card->gdev->dev, 1028 "The device represents a Bridge Capable Port\n"); 1029 qeth_trace_features(card); 1030 1031 if (!card->dev && qeth_l2_setup_netdev(card)) { 1032 rc = -ENODEV; 1033 goto out_remove; 1034 } 1035 1036 if (card->info.type != QETH_CARD_TYPE_OSN) 1037 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1038 1039 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1040 if (card->info.hwtrap && 1041 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1042 card->info.hwtrap = 0; 1043 } else 1044 card->info.hwtrap = 0; 1045 1046 qeth_l2_setup_bridgeport_attrs(card); 1047 1048 card->state = CARD_STATE_HARDSETUP; 1049 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1050 qeth_print_status_message(card); 1051 1052 /* softsetup */ 1053 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1054 1055 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1056 (card->info.type == QETH_CARD_TYPE_OSX)) { 1057 rc = qeth_l2_start_ipassists(card); 1058 if (rc) 1059 goto out_remove; 1060 } 1061 1062 if (card->info.type != QETH_CARD_TYPE_OSN && 1063 card->info.type != QETH_CARD_TYPE_OSM) 1064 qeth_l2_process_vlans(card); 1065 1066 netif_tx_disable(card->dev); 1067 1068 rc = qeth_init_qdio_queues(card); 1069 if (rc) { 1070 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1071 rc = -ENODEV; 1072 goto out_remove; 1073 } 1074 card->state = CARD_STATE_SOFTSETUP; 1075 if (card->lan_online) 1076 netif_carrier_on(card->dev); 1077 else 1078 netif_carrier_off(card->dev); 1079 1080 qeth_set_allowed_threads(card, 0xffffffff, 0); 1081 if (recover_flag == CARD_STATE_RECOVER) { 1082 if (recovery_mode && 1083 card->info.type != QETH_CARD_TYPE_OSN) { 1084 __qeth_l2_open(card->dev); 1085 } else { 1086 rtnl_lock(); 1087 dev_open(card->dev); 1088 rtnl_unlock(); 1089 } 1090 /* this also sets saved unicast addresses */ 1091 qeth_l2_set_rx_mode(card->dev); 1092 rtnl_lock(); 1093 qeth_recover_features(card->dev); 1094 rtnl_unlock(); 1095 } 1096 /* let user_space know that device is online */ 1097 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1098 mutex_unlock(&card->conf_mutex); 1099 mutex_unlock(&card->discipline_mutex); 1100 return 0; 1101 1102 out_remove: 1103 qeth_l2_stop_card(card, 0); 1104 ccw_device_set_offline(CARD_DDEV(card)); 1105 ccw_device_set_offline(CARD_WDEV(card)); 1106 ccw_device_set_offline(CARD_RDEV(card)); 1107 qdio_free(CARD_DDEV(card)); 1108 if (recover_flag == CARD_STATE_RECOVER) 1109 card->state = CARD_STATE_RECOVER; 1110 else 1111 card->state = CARD_STATE_DOWN; 1112 mutex_unlock(&card->conf_mutex); 1113 mutex_unlock(&card->discipline_mutex); 1114 return rc; 1115 } 1116 1117 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1118 { 1119 return __qeth_l2_set_online(gdev, 0); 1120 } 1121 1122 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1123 int recovery_mode) 1124 { 1125 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1126 int rc = 0, rc2 = 0, rc3 = 0; 1127 enum qeth_card_states recover_flag; 1128 1129 mutex_lock(&card->discipline_mutex); 1130 mutex_lock(&card->conf_mutex); 1131 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1132 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1133 1134 if (card->dev && netif_carrier_ok(card->dev)) 1135 netif_carrier_off(card->dev); 1136 recover_flag = card->state; 1137 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1138 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1139 card->info.hwtrap = 1; 1140 } 1141 qeth_l2_stop_card(card, recovery_mode); 1142 rc = ccw_device_set_offline(CARD_DDEV(card)); 1143 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1144 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1145 if (!rc) 1146 rc = (rc2) ? rc2 : rc3; 1147 if (rc) 1148 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1149 qdio_free(CARD_DDEV(card)); 1150 if (recover_flag == CARD_STATE_UP) 1151 card->state = CARD_STATE_RECOVER; 1152 /* let user_space know that device is offline */ 1153 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1154 mutex_unlock(&card->conf_mutex); 1155 mutex_unlock(&card->discipline_mutex); 1156 return 0; 1157 } 1158 1159 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1160 { 1161 return __qeth_l2_set_offline(cgdev, 0); 1162 } 1163 1164 static int qeth_l2_recover(void *ptr) 1165 { 1166 struct qeth_card *card; 1167 int rc = 0; 1168 1169 card = (struct qeth_card *) ptr; 1170 QETH_CARD_TEXT(card, 2, "recover1"); 1171 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1172 return 0; 1173 QETH_CARD_TEXT(card, 2, "recover2"); 1174 dev_warn(&card->gdev->dev, 1175 "A recovery process has been started for the device\n"); 1176 qeth_set_recovery_task(card); 1177 __qeth_l2_set_offline(card->gdev, 1); 1178 rc = __qeth_l2_set_online(card->gdev, 1); 1179 if (!rc) 1180 dev_info(&card->gdev->dev, 1181 "Device successfully recovered!\n"); 1182 else { 1183 qeth_close_dev(card); 1184 dev_warn(&card->gdev->dev, "The qeth device driver " 1185 "failed to recover an error on the device\n"); 1186 } 1187 qeth_clear_recovery_task(card); 1188 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1189 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1190 return 0; 1191 } 1192 1193 static int __init qeth_l2_init(void) 1194 { 1195 pr_info("register layer 2 discipline\n"); 1196 return 0; 1197 } 1198 1199 static void __exit qeth_l2_exit(void) 1200 { 1201 pr_info("unregister layer 2 discipline\n"); 1202 } 1203 1204 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1205 { 1206 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1207 1208 if (card->dev) 1209 netif_device_detach(card->dev); 1210 qeth_set_allowed_threads(card, 0, 1); 1211 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1212 if (gdev->state == CCWGROUP_OFFLINE) 1213 return 0; 1214 if (card->state == CARD_STATE_UP) { 1215 if (card->info.hwtrap) 1216 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1217 __qeth_l2_set_offline(card->gdev, 1); 1218 } else 1219 __qeth_l2_set_offline(card->gdev, 0); 1220 return 0; 1221 } 1222 1223 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1224 { 1225 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1226 int rc = 0; 1227 1228 if (gdev->state == CCWGROUP_OFFLINE) 1229 goto out; 1230 1231 if (card->state == CARD_STATE_RECOVER) { 1232 rc = __qeth_l2_set_online(card->gdev, 1); 1233 if (rc) { 1234 rtnl_lock(); 1235 dev_close(card->dev); 1236 rtnl_unlock(); 1237 } 1238 } else 1239 rc = __qeth_l2_set_online(card->gdev, 0); 1240 out: 1241 qeth_set_allowed_threads(card, 0xffffffff, 0); 1242 if (card->dev) 1243 netif_device_attach(card->dev); 1244 if (rc) 1245 dev_warn(&card->gdev->dev, "The qeth device driver " 1246 "failed to recover an error on the device\n"); 1247 return rc; 1248 } 1249 1250 /* Returns zero if the command is successfully "consumed" */ 1251 static int qeth_l2_control_event(struct qeth_card *card, 1252 struct qeth_ipa_cmd *cmd) 1253 { 1254 switch (cmd->hdr.command) { 1255 case IPA_CMD_SETBRIDGEPORT_OSA: 1256 case IPA_CMD_SETBRIDGEPORT_IQD: 1257 if (cmd->data.sbp.hdr.command_code == 1258 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1259 qeth_bridge_state_change(card, cmd); 1260 return 0; 1261 } else 1262 return 1; 1263 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1264 qeth_bridge_host_event(card, cmd); 1265 return 0; 1266 default: 1267 return 1; 1268 } 1269 } 1270 1271 struct qeth_discipline qeth_l2_discipline = { 1272 .start_poll = qeth_qdio_start_poll, 1273 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1274 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1275 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1276 .recover = qeth_l2_recover, 1277 .setup = qeth_l2_probe_device, 1278 .remove = qeth_l2_remove_device, 1279 .set_online = qeth_l2_set_online, 1280 .set_offline = qeth_l2_set_offline, 1281 .freeze = qeth_l2_pm_suspend, 1282 .thaw = qeth_l2_pm_resume, 1283 .restore = qeth_l2_pm_resume, 1284 .do_ioctl = NULL, 1285 .control_event_handler = qeth_l2_control_event, 1286 }; 1287 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1288 1289 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1290 struct qeth_cmd_buffer *iob) 1291 { 1292 unsigned long flags; 1293 int rc = 0; 1294 1295 QETH_CARD_TEXT(card, 5, "osndctrd"); 1296 1297 wait_event(card->wait_q, 1298 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1299 qeth_prepare_control_data(card, len, iob); 1300 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1301 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1302 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1303 (addr_t) iob, 0, 0); 1304 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1305 if (rc) { 1306 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1307 "ccw_device_start rc = %i\n", rc); 1308 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1309 qeth_release_buffer(iob->channel, iob); 1310 atomic_set(&card->write.irq_pending, 0); 1311 wake_up(&card->wait_q); 1312 } 1313 return rc; 1314 } 1315 1316 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1317 struct qeth_cmd_buffer *iob, int data_len) 1318 { 1319 u16 s1, s2; 1320 1321 QETH_CARD_TEXT(card, 4, "osndipa"); 1322 1323 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1324 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1325 s2 = (u16)data_len; 1326 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1327 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1328 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1329 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1330 return qeth_osn_send_control_data(card, s1, iob); 1331 } 1332 1333 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1334 { 1335 struct qeth_cmd_buffer *iob; 1336 struct qeth_card *card; 1337 int rc; 1338 1339 if (!dev) 1340 return -ENODEV; 1341 card = dev->ml_priv; 1342 if (!card) 1343 return -ENODEV; 1344 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1345 if (!qeth_card_hw_is_reachable(card)) 1346 return -ENODEV; 1347 iob = qeth_wait_for_buffer(&card->write); 1348 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1349 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1350 return rc; 1351 } 1352 EXPORT_SYMBOL(qeth_osn_assist); 1353 1354 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1355 int (*assist_cb)(struct net_device *, void *), 1356 int (*data_cb)(struct sk_buff *)) 1357 { 1358 struct qeth_card *card; 1359 1360 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1361 if (*dev == NULL) 1362 return -ENODEV; 1363 card = (*dev)->ml_priv; 1364 if (!card) 1365 return -ENODEV; 1366 QETH_CARD_TEXT(card, 2, "osnreg"); 1367 if ((assist_cb == NULL) || (data_cb == NULL)) 1368 return -EINVAL; 1369 card->osn_info.assist_cb = assist_cb; 1370 card->osn_info.data_cb = data_cb; 1371 return 0; 1372 } 1373 EXPORT_SYMBOL(qeth_osn_register); 1374 1375 void qeth_osn_deregister(struct net_device *dev) 1376 { 1377 struct qeth_card *card; 1378 1379 if (!dev) 1380 return; 1381 card = dev->ml_priv; 1382 if (!card) 1383 return; 1384 QETH_CARD_TEXT(card, 2, "osndereg"); 1385 card->osn_info.assist_cb = NULL; 1386 card->osn_info.data_cb = NULL; 1387 return; 1388 } 1389 EXPORT_SYMBOL(qeth_osn_deregister); 1390 1391 /* SETBRIDGEPORT support, async notifications */ 1392 1393 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1394 1395 /** 1396 * qeth_bridge_emit_host_event() - bridgeport address change notification 1397 * @card: qeth_card structure pointer, for udev events. 1398 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1399 * and reset token and addr_lnid are unused and may be NULL. 1400 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1401 * object, 0 - addition of an object. 1402 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1403 * @token: "network token" structure identifying physical address of the port. 1404 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1405 * 1406 * This function is called when registrations and deregistrations are 1407 * reported by the hardware, and also when notifications are enabled - 1408 * for all currently registered addresses. 1409 */ 1410 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1411 enum qeth_an_event_type evtype, 1412 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1413 { 1414 char str[7][32]; 1415 char *env[8]; 1416 int i = 0; 1417 1418 switch (evtype) { 1419 case anev_reg_unreg: 1420 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1421 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1422 ? "deregister" : "register"); 1423 env[i] = str[i]; i++; 1424 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1425 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1426 addr_lnid->lnid); 1427 env[i] = str[i]; i++; 1428 } 1429 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1430 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1431 addr_lnid->mac); 1432 env[i] = str[i]; i++; 1433 } 1434 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1435 token->cssid, token->ssid, token->devnum); 1436 env[i] = str[i]; i++; 1437 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1438 env[i] = str[i]; i++; 1439 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1440 token->chpid); 1441 env[i] = str[i]; i++; 1442 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1443 env[i] = str[i]; i++; 1444 break; 1445 case anev_abort: 1446 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1447 env[i] = str[i]; i++; 1448 break; 1449 case anev_reset: 1450 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1451 env[i] = str[i]; i++; 1452 break; 1453 } 1454 env[i] = NULL; 1455 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1456 } 1457 1458 struct qeth_bridge_state_data { 1459 struct work_struct worker; 1460 struct qeth_card *card; 1461 struct qeth_sbp_state_change qports; 1462 }; 1463 1464 static void qeth_bridge_state_change_worker(struct work_struct *work) 1465 { 1466 struct qeth_bridge_state_data *data = 1467 container_of(work, struct qeth_bridge_state_data, worker); 1468 /* We are only interested in the first entry - local port */ 1469 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1470 char env_locrem[32]; 1471 char env_role[32]; 1472 char env_state[32]; 1473 char *env[] = { 1474 env_locrem, 1475 env_role, 1476 env_state, 1477 NULL 1478 }; 1479 1480 /* Role should not change by itself, but if it did, */ 1481 /* information from the hardware is authoritative. */ 1482 mutex_lock(&data->card->conf_mutex); 1483 data->card->options.sbp.role = entry->role; 1484 mutex_unlock(&data->card->conf_mutex); 1485 1486 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1487 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1488 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1489 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1490 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1491 "<INVALID>"); 1492 snprintf(env_state, sizeof(env_state), "STATE=%s", 1493 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1494 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1495 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1496 "<INVALID>"); 1497 kobject_uevent_env(&data->card->gdev->dev.kobj, 1498 KOBJ_CHANGE, env); 1499 kfree(data); 1500 } 1501 1502 static void qeth_bridge_state_change(struct qeth_card *card, 1503 struct qeth_ipa_cmd *cmd) 1504 { 1505 struct qeth_sbp_state_change *qports = 1506 &cmd->data.sbp.data.state_change; 1507 struct qeth_bridge_state_data *data; 1508 int extrasize; 1509 1510 QETH_CARD_TEXT(card, 2, "brstchng"); 1511 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1512 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1513 return; 1514 } 1515 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1516 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1517 GFP_ATOMIC); 1518 if (!data) { 1519 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1520 return; 1521 } 1522 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1523 data->card = card; 1524 memcpy(&data->qports, qports, 1525 sizeof(struct qeth_sbp_state_change) + extrasize); 1526 queue_work(qeth_wq, &data->worker); 1527 } 1528 1529 struct qeth_bridge_host_data { 1530 struct work_struct worker; 1531 struct qeth_card *card; 1532 struct qeth_ipacmd_addr_change hostevs; 1533 }; 1534 1535 static void qeth_bridge_host_event_worker(struct work_struct *work) 1536 { 1537 struct qeth_bridge_host_data *data = 1538 container_of(work, struct qeth_bridge_host_data, worker); 1539 int i; 1540 1541 if (data->hostevs.lost_event_mask) { 1542 dev_info(&data->card->gdev->dev, 1543 "Address notification from the Bridge Port stopped %s (%s)\n", 1544 data->card->dev->name, 1545 (data->hostevs.lost_event_mask == 0x01) 1546 ? "Overflow" 1547 : (data->hostevs.lost_event_mask == 0x02) 1548 ? "Bridge port state change" 1549 : "Unknown reason"); 1550 mutex_lock(&data->card->conf_mutex); 1551 data->card->options.sbp.hostnotification = 0; 1552 mutex_unlock(&data->card->conf_mutex); 1553 qeth_bridge_emit_host_event(data->card, anev_abort, 1554 0, NULL, NULL); 1555 } else 1556 for (i = 0; i < data->hostevs.num_entries; i++) { 1557 struct qeth_ipacmd_addr_change_entry *entry = 1558 &data->hostevs.entry[i]; 1559 qeth_bridge_emit_host_event(data->card, 1560 anev_reg_unreg, 1561 entry->change_code, 1562 &entry->token, &entry->addr_lnid); 1563 } 1564 kfree(data); 1565 } 1566 1567 static void qeth_bridge_host_event(struct qeth_card *card, 1568 struct qeth_ipa_cmd *cmd) 1569 { 1570 struct qeth_ipacmd_addr_change *hostevs = 1571 &cmd->data.addrchange; 1572 struct qeth_bridge_host_data *data; 1573 int extrasize; 1574 1575 QETH_CARD_TEXT(card, 2, "brhostev"); 1576 if (cmd->hdr.return_code != 0x0000) { 1577 if (cmd->hdr.return_code == 0x0010) { 1578 if (hostevs->lost_event_mask == 0x00) 1579 hostevs->lost_event_mask = 0xff; 1580 } else { 1581 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1582 cmd->hdr.return_code); 1583 return; 1584 } 1585 } 1586 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1587 hostevs->num_entries; 1588 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1589 GFP_ATOMIC); 1590 if (!data) { 1591 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1592 return; 1593 } 1594 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1595 data->card = card; 1596 memcpy(&data->hostevs, hostevs, 1597 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1598 queue_work(qeth_wq, &data->worker); 1599 } 1600 1601 /* SETBRIDGEPORT support; sending commands */ 1602 1603 struct _qeth_sbp_cbctl { 1604 u16 ipa_rc; 1605 u16 cmd_rc; 1606 union { 1607 u32 supported; 1608 struct { 1609 enum qeth_sbp_roles *role; 1610 enum qeth_sbp_states *state; 1611 } qports; 1612 } data; 1613 }; 1614 1615 /** 1616 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1617 * @card: qeth_card structure pointer, for debug messages. 1618 * @cbctl: state structure with hardware return codes. 1619 * @setcmd: IPA command code 1620 * 1621 * Returns negative errno-compatible error indication or 0 on success. 1622 */ 1623 static int qeth_bridgeport_makerc(struct qeth_card *card, 1624 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1625 { 1626 int rc; 1627 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1628 1629 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1630 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1631 switch (cbctl->cmd_rc) { 1632 case 0x0000: 1633 rc = 0; 1634 break; 1635 case 0x2B04: 1636 case 0x0004: 1637 rc = -EOPNOTSUPP; 1638 break; 1639 case 0x2B0C: 1640 case 0x000C: /* Not configured as bridge Port */ 1641 rc = -ENODEV; /* maybe not the best code here? */ 1642 dev_err(&card->gdev->dev, 1643 "The device is not configured as a Bridge Port\n"); 1644 break; 1645 case 0x2B10: 1646 case 0x0010: /* OS mismatch */ 1647 rc = -EPERM; 1648 dev_err(&card->gdev->dev, 1649 "A Bridge Port is already configured by a different operating system\n"); 1650 break; 1651 case 0x2B14: 1652 case 0x0014: /* Another device is Primary */ 1653 switch (setcmd) { 1654 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1655 rc = -EEXIST; 1656 dev_err(&card->gdev->dev, 1657 "The LAN already has a primary Bridge Port\n"); 1658 break; 1659 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1660 rc = -EBUSY; 1661 dev_err(&card->gdev->dev, 1662 "The device is already a primary Bridge Port\n"); 1663 break; 1664 default: 1665 rc = -EIO; 1666 } 1667 break; 1668 case 0x2B18: 1669 case 0x0018: /* This device is currently Secondary */ 1670 rc = -EBUSY; 1671 dev_err(&card->gdev->dev, 1672 "The device is already a secondary Bridge Port\n"); 1673 break; 1674 case 0x2B1C: 1675 case 0x001C: /* Limit for Secondary devices reached */ 1676 rc = -EEXIST; 1677 dev_err(&card->gdev->dev, 1678 "The LAN cannot have more secondary Bridge Ports\n"); 1679 break; 1680 case 0x2B24: 1681 case 0x0024: /* This device is currently Primary */ 1682 rc = -EBUSY; 1683 dev_err(&card->gdev->dev, 1684 "The device is already a primary Bridge Port\n"); 1685 break; 1686 case 0x2B20: 1687 case 0x0020: /* Not authorized by zManager */ 1688 rc = -EACCES; 1689 dev_err(&card->gdev->dev, 1690 "The device is not authorized to be a Bridge Port\n"); 1691 break; 1692 default: 1693 rc = -EIO; 1694 } 1695 else 1696 switch (cbctl->ipa_rc) { 1697 case IPA_RC_NOTSUPP: 1698 rc = -EOPNOTSUPP; 1699 break; 1700 case IPA_RC_UNSUPPORTED_COMMAND: 1701 rc = -EOPNOTSUPP; 1702 break; 1703 default: 1704 rc = -EIO; 1705 } 1706 1707 if (rc) { 1708 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1709 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1710 } 1711 return rc; 1712 } 1713 1714 static inline int ipa_cmd_sbp(struct qeth_card *card) 1715 { 1716 return (card->info.type == QETH_CARD_TYPE_IQD) ? 1717 IPA_CMD_SETBRIDGEPORT_IQD : 1718 IPA_CMD_SETBRIDGEPORT_OSA; 1719 } 1720 1721 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1722 struct qeth_reply *reply, unsigned long data) 1723 { 1724 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1725 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1726 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1727 cbctl->ipa_rc = cmd->hdr.return_code; 1728 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1729 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1730 cbctl->data.supported = 1731 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1732 } else { 1733 cbctl->data.supported = 0; 1734 } 1735 return 0; 1736 } 1737 1738 /** 1739 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1740 * @card: qeth_card structure pointer. 1741 * 1742 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1743 * strucutre: card->options.sbp.supported_funcs. 1744 */ 1745 static void qeth_bridgeport_query_support(struct qeth_card *card) 1746 { 1747 struct qeth_cmd_buffer *iob; 1748 struct qeth_ipa_cmd *cmd; 1749 struct _qeth_sbp_cbctl cbctl; 1750 1751 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1752 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1753 if (!iob) 1754 return; 1755 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1756 cmd->data.sbp.hdr.cmdlength = 1757 sizeof(struct qeth_ipacmd_sbp_hdr) + 1758 sizeof(struct qeth_sbp_query_cmds_supp); 1759 cmd->data.sbp.hdr.command_code = 1760 IPA_SBP_QUERY_COMMANDS_SUPPORTED; 1761 cmd->data.sbp.hdr.used_total = 1; 1762 cmd->data.sbp.hdr.seq_no = 1; 1763 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1764 (void *)&cbctl) || 1765 qeth_bridgeport_makerc(card, &cbctl, 1766 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1767 /* non-zero makerc signifies failure, and produce messages */ 1768 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1769 return; 1770 } 1771 card->options.sbp.supported_funcs = cbctl.data.supported; 1772 } 1773 1774 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1775 struct qeth_reply *reply, unsigned long data) 1776 { 1777 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1778 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1779 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1780 1781 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1782 cbctl->ipa_rc = cmd->hdr.return_code; 1783 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1784 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1785 return 0; 1786 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1787 cbctl->cmd_rc = 0xffff; 1788 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1789 return 0; 1790 } 1791 /* first entry contains the state of the local port */ 1792 if (qports->num_entries > 0) { 1793 if (cbctl->data.qports.role) 1794 *cbctl->data.qports.role = qports->entry[0].role; 1795 if (cbctl->data.qports.state) 1796 *cbctl->data.qports.state = qports->entry[0].state; 1797 } 1798 return 0; 1799 } 1800 1801 /** 1802 * qeth_bridgeport_query_ports() - query local bridgeport status. 1803 * @card: qeth_card structure pointer. 1804 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1805 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1806 * 1807 * Returns negative errno-compatible error indication or 0 on success. 1808 * 1809 * 'role' and 'state' are not updated in case of hardware operation failure. 1810 */ 1811 int qeth_bridgeport_query_ports(struct qeth_card *card, 1812 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1813 { 1814 int rc = 0; 1815 struct qeth_cmd_buffer *iob; 1816 struct qeth_ipa_cmd *cmd; 1817 struct _qeth_sbp_cbctl cbctl = { 1818 .data = { 1819 .qports = { 1820 .role = role, 1821 .state = state, 1822 }, 1823 }, 1824 }; 1825 1826 QETH_CARD_TEXT(card, 2, "brqports"); 1827 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1828 return -EOPNOTSUPP; 1829 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1830 if (!iob) 1831 return -ENOMEM; 1832 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1833 cmd->data.sbp.hdr.cmdlength = 1834 sizeof(struct qeth_ipacmd_sbp_hdr); 1835 cmd->data.sbp.hdr.command_code = 1836 IPA_SBP_QUERY_BRIDGE_PORTS; 1837 cmd->data.sbp.hdr.used_total = 1; 1838 cmd->data.sbp.hdr.seq_no = 1; 1839 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1840 (void *)&cbctl); 1841 if (rc < 0) 1842 return rc; 1843 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1844 } 1845 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1846 1847 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1848 struct qeth_reply *reply, unsigned long data) 1849 { 1850 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1851 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1852 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1853 cbctl->ipa_rc = cmd->hdr.return_code; 1854 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1855 return 0; 1856 } 1857 1858 /** 1859 * qeth_bridgeport_setrole() - Assign primary role to the port. 1860 * @card: qeth_card structure pointer. 1861 * @role: Role to assign. 1862 * 1863 * Returns negative errno-compatible error indication or 0 on success. 1864 */ 1865 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1866 { 1867 int rc = 0; 1868 int cmdlength; 1869 struct qeth_cmd_buffer *iob; 1870 struct qeth_ipa_cmd *cmd; 1871 struct _qeth_sbp_cbctl cbctl; 1872 enum qeth_ipa_sbp_cmd setcmd; 1873 1874 QETH_CARD_TEXT(card, 2, "brsetrol"); 1875 switch (role) { 1876 case QETH_SBP_ROLE_NONE: 1877 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1878 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1879 sizeof(struct qeth_sbp_reset_role); 1880 break; 1881 case QETH_SBP_ROLE_PRIMARY: 1882 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1883 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1884 sizeof(struct qeth_sbp_set_primary); 1885 break; 1886 case QETH_SBP_ROLE_SECONDARY: 1887 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1888 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1889 sizeof(struct qeth_sbp_set_secondary); 1890 break; 1891 default: 1892 return -EINVAL; 1893 } 1894 if (!(card->options.sbp.supported_funcs & setcmd)) 1895 return -EOPNOTSUPP; 1896 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1897 if (!iob) 1898 return -ENOMEM; 1899 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1900 cmd->data.sbp.hdr.cmdlength = cmdlength; 1901 cmd->data.sbp.hdr.command_code = setcmd; 1902 cmd->data.sbp.hdr.used_total = 1; 1903 cmd->data.sbp.hdr.seq_no = 1; 1904 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 1905 (void *)&cbctl); 1906 if (rc < 0) 1907 return rc; 1908 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 1909 } 1910 1911 /** 1912 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1913 * @card: qeth_card structure pointer, for debug messages. 1914 * 1915 * Returns negative errno-compatible error indication or 0 on success. 1916 */ 1917 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1918 { 1919 int rc; 1920 1921 if (pnso_rc == 0) 1922 switch (response) { 1923 case 0x0001: 1924 rc = 0; 1925 break; 1926 case 0x0004: 1927 case 0x0100: 1928 case 0x0106: 1929 rc = -EOPNOTSUPP; 1930 dev_err(&card->gdev->dev, 1931 "Setting address notification failed\n"); 1932 break; 1933 case 0x0107: 1934 rc = -EAGAIN; 1935 break; 1936 default: 1937 rc = -EIO; 1938 } 1939 else 1940 rc = -EIO; 1941 1942 if (rc) { 1943 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1944 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1945 } 1946 return rc; 1947 } 1948 1949 static void qeth_bridgeport_an_set_cb(void *priv, 1950 enum qdio_brinfo_entry_type type, void *entry) 1951 { 1952 struct qeth_card *card = (struct qeth_card *)priv; 1953 struct qdio_brinfo_entry_l2 *l2entry; 1954 u8 code; 1955 1956 if (type != l2_addr_lnid) { 1957 WARN_ON_ONCE(1); 1958 return; 1959 } 1960 1961 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1962 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1963 if (l2entry->addr_lnid.lnid) 1964 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1965 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1966 (struct net_if_token *)&l2entry->nit, 1967 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1968 } 1969 1970 /** 1971 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1972 * @card: qeth_card structure pointer. 1973 * @enable: 0 - disable, non-zero - enable notifications 1974 * 1975 * Returns negative errno-compatible error indication or 0 on success. 1976 * 1977 * On enable, emits a series of address notifications udev events for all 1978 * currently registered hosts. 1979 */ 1980 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 1981 { 1982 int rc; 1983 u16 response; 1984 struct ccw_device *ddev; 1985 struct subchannel_id schid; 1986 1987 if (!card) 1988 return -EINVAL; 1989 if (!card->options.sbp.supported_funcs) 1990 return -EOPNOTSUPP; 1991 ddev = CARD_DDEV(card); 1992 ccw_device_get_schid(ddev, &schid); 1993 1994 if (enable) { 1995 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 1996 rc = qdio_pnso_brinfo(schid, 1, &response, 1997 qeth_bridgeport_an_set_cb, card); 1998 } else 1999 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2000 return qeth_anset_makerc(card, rc, response); 2001 } 2002 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2003 2004 module_init(qeth_l2_init); 2005 module_exit(qeth_l2_exit); 2006 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2007 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2008 MODULE_LICENSE("GPL"); 2009