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 const struct device_type qeth_l2_devtype = { 884 .name = "qeth_layer2", 885 .groups = qeth_l2_attr_groups, 886 }; 887 888 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 889 { 890 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 891 int rc; 892 893 if (gdev->dev.type == &qeth_generic_devtype) { 894 rc = qeth_l2_create_device_attributes(&gdev->dev); 895 if (rc) 896 return rc; 897 } 898 INIT_LIST_HEAD(&card->vid_list); 899 hash_init(card->mac_htable); 900 card->options.layer2 = 1; 901 card->info.hwtrap = 0; 902 return 0; 903 } 904 905 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 906 { 907 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 908 909 if (cgdev->dev.type == &qeth_generic_devtype) 910 qeth_l2_remove_device_attributes(&cgdev->dev); 911 qeth_set_allowed_threads(card, 0, 1); 912 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 913 914 if (cgdev->state == CCWGROUP_ONLINE) 915 qeth_l2_set_offline(cgdev); 916 917 if (card->dev) { 918 netif_napi_del(&card->napi); 919 unregister_netdev(card->dev); 920 card->dev = NULL; 921 } 922 return; 923 } 924 925 static const struct ethtool_ops qeth_l2_ethtool_ops = { 926 .get_link = ethtool_op_get_link, 927 .get_strings = qeth_core_get_strings, 928 .get_ethtool_stats = qeth_core_get_ethtool_stats, 929 .get_sset_count = qeth_core_get_sset_count, 930 .get_drvinfo = qeth_core_get_drvinfo, 931 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 932 }; 933 934 static const struct ethtool_ops qeth_l2_osn_ops = { 935 .get_strings = qeth_core_get_strings, 936 .get_ethtool_stats = qeth_core_get_ethtool_stats, 937 .get_sset_count = qeth_core_get_sset_count, 938 .get_drvinfo = qeth_core_get_drvinfo, 939 }; 940 941 static const struct net_device_ops qeth_l2_netdev_ops = { 942 .ndo_open = qeth_l2_open, 943 .ndo_stop = qeth_l2_stop, 944 .ndo_get_stats = qeth_get_stats, 945 .ndo_start_xmit = qeth_l2_hard_start_xmit, 946 .ndo_validate_addr = eth_validate_addr, 947 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 948 .ndo_do_ioctl = qeth_do_ioctl, 949 .ndo_set_mac_address = qeth_l2_set_mac_address, 950 .ndo_change_mtu = qeth_change_mtu, 951 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 952 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 953 .ndo_tx_timeout = qeth_tx_timeout, 954 .ndo_fix_features = qeth_fix_features, 955 .ndo_set_features = qeth_set_features 956 }; 957 958 static int qeth_l2_setup_netdev(struct qeth_card *card) 959 { 960 switch (card->info.type) { 961 case QETH_CARD_TYPE_IQD: 962 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 963 ether_setup); 964 break; 965 case QETH_CARD_TYPE_OSN: 966 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 967 ether_setup); 968 break; 969 default: 970 card->dev = alloc_etherdev(0); 971 } 972 973 if (!card->dev) 974 return -ENODEV; 975 976 card->dev->ml_priv = card; 977 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 978 card->dev->mtu = card->info.initial_mtu; 979 card->dev->min_mtu = 64; 980 card->dev->max_mtu = ETH_MAX_MTU; 981 card->dev->netdev_ops = &qeth_l2_netdev_ops; 982 if (card->info.type == QETH_CARD_TYPE_OSN) { 983 card->dev->ethtool_ops = &qeth_l2_osn_ops; 984 card->dev->flags |= IFF_NOARP; 985 } else { 986 card->dev->ethtool_ops = &qeth_l2_ethtool_ops; 987 } 988 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 989 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 990 card->dev->hw_features = NETIF_F_SG; 991 card->dev->vlan_features = NETIF_F_SG; 992 /* OSA 3S and earlier has no RX/TX support */ 993 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 994 card->dev->hw_features |= NETIF_F_IP_CSUM; 995 card->dev->vlan_features |= NETIF_F_IP_CSUM; 996 } 997 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 998 card->dev->hw_features |= NETIF_F_RXCSUM; 999 card->dev->vlan_features |= NETIF_F_RXCSUM; 1000 } 1001 } 1002 card->info.broadcast_capable = 1; 1003 qeth_l2_request_initial_mac(card); 1004 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) * 1005 PAGE_SIZE; 1006 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1007 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 1008 netif_carrier_off(card->dev); 1009 return register_netdev(card->dev); 1010 } 1011 1012 static int qeth_l2_start_ipassists(struct qeth_card *card) 1013 { 1014 /* configure isolation level */ 1015 if (qeth_set_access_ctrl_online(card, 0)) 1016 return -ENODEV; 1017 return 0; 1018 } 1019 1020 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1021 { 1022 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1023 int rc = 0; 1024 enum qeth_card_states recover_flag; 1025 1026 mutex_lock(&card->discipline_mutex); 1027 mutex_lock(&card->conf_mutex); 1028 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1029 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1030 1031 recover_flag = card->state; 1032 rc = qeth_core_hardsetup_card(card); 1033 if (rc) { 1034 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1035 rc = -ENODEV; 1036 goto out_remove; 1037 } 1038 qeth_bridgeport_query_support(card); 1039 if (card->options.sbp.supported_funcs) 1040 dev_info(&card->gdev->dev, 1041 "The device represents a Bridge Capable Port\n"); 1042 qeth_trace_features(card); 1043 1044 if (!card->dev && qeth_l2_setup_netdev(card)) { 1045 rc = -ENODEV; 1046 goto out_remove; 1047 } 1048 1049 if (card->info.type != QETH_CARD_TYPE_OSN) 1050 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1051 1052 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1053 if (card->info.hwtrap && 1054 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1055 card->info.hwtrap = 0; 1056 } else 1057 card->info.hwtrap = 0; 1058 1059 qeth_l2_setup_bridgeport_attrs(card); 1060 1061 card->state = CARD_STATE_HARDSETUP; 1062 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1063 qeth_print_status_message(card); 1064 1065 /* softsetup */ 1066 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1067 1068 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1069 (card->info.type == QETH_CARD_TYPE_OSX)) { 1070 rc = qeth_l2_start_ipassists(card); 1071 if (rc) 1072 goto out_remove; 1073 } 1074 1075 if (card->info.type != QETH_CARD_TYPE_OSN && 1076 card->info.type != QETH_CARD_TYPE_OSM) 1077 qeth_l2_process_vlans(card); 1078 1079 netif_tx_disable(card->dev); 1080 1081 rc = qeth_init_qdio_queues(card); 1082 if (rc) { 1083 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1084 rc = -ENODEV; 1085 goto out_remove; 1086 } 1087 card->state = CARD_STATE_SOFTSETUP; 1088 if (card->lan_online) 1089 netif_carrier_on(card->dev); 1090 else 1091 netif_carrier_off(card->dev); 1092 1093 qeth_set_allowed_threads(card, 0xffffffff, 0); 1094 if (recover_flag == CARD_STATE_RECOVER) { 1095 if (recovery_mode && 1096 card->info.type != QETH_CARD_TYPE_OSN) { 1097 __qeth_l2_open(card->dev); 1098 } else { 1099 rtnl_lock(); 1100 dev_open(card->dev); 1101 rtnl_unlock(); 1102 } 1103 /* this also sets saved unicast addresses */ 1104 qeth_l2_set_rx_mode(card->dev); 1105 rtnl_lock(); 1106 qeth_recover_features(card->dev); 1107 rtnl_unlock(); 1108 } 1109 /* let user_space know that device is online */ 1110 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1111 mutex_unlock(&card->conf_mutex); 1112 mutex_unlock(&card->discipline_mutex); 1113 return 0; 1114 1115 out_remove: 1116 qeth_l2_stop_card(card, 0); 1117 ccw_device_set_offline(CARD_DDEV(card)); 1118 ccw_device_set_offline(CARD_WDEV(card)); 1119 ccw_device_set_offline(CARD_RDEV(card)); 1120 qdio_free(CARD_DDEV(card)); 1121 if (recover_flag == CARD_STATE_RECOVER) 1122 card->state = CARD_STATE_RECOVER; 1123 else 1124 card->state = CARD_STATE_DOWN; 1125 mutex_unlock(&card->conf_mutex); 1126 mutex_unlock(&card->discipline_mutex); 1127 return rc; 1128 } 1129 1130 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1131 { 1132 return __qeth_l2_set_online(gdev, 0); 1133 } 1134 1135 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1136 int recovery_mode) 1137 { 1138 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1139 int rc = 0, rc2 = 0, rc3 = 0; 1140 enum qeth_card_states recover_flag; 1141 1142 mutex_lock(&card->discipline_mutex); 1143 mutex_lock(&card->conf_mutex); 1144 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1145 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1146 1147 if (card->dev && netif_carrier_ok(card->dev)) 1148 netif_carrier_off(card->dev); 1149 recover_flag = card->state; 1150 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1151 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1152 card->info.hwtrap = 1; 1153 } 1154 qeth_l2_stop_card(card, recovery_mode); 1155 rc = ccw_device_set_offline(CARD_DDEV(card)); 1156 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1157 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1158 if (!rc) 1159 rc = (rc2) ? rc2 : rc3; 1160 if (rc) 1161 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1162 qdio_free(CARD_DDEV(card)); 1163 if (recover_flag == CARD_STATE_UP) 1164 card->state = CARD_STATE_RECOVER; 1165 /* let user_space know that device is offline */ 1166 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1167 mutex_unlock(&card->conf_mutex); 1168 mutex_unlock(&card->discipline_mutex); 1169 return 0; 1170 } 1171 1172 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1173 { 1174 return __qeth_l2_set_offline(cgdev, 0); 1175 } 1176 1177 static int qeth_l2_recover(void *ptr) 1178 { 1179 struct qeth_card *card; 1180 int rc = 0; 1181 1182 card = (struct qeth_card *) ptr; 1183 QETH_CARD_TEXT(card, 2, "recover1"); 1184 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1185 return 0; 1186 QETH_CARD_TEXT(card, 2, "recover2"); 1187 dev_warn(&card->gdev->dev, 1188 "A recovery process has been started for the device\n"); 1189 qeth_set_recovery_task(card); 1190 __qeth_l2_set_offline(card->gdev, 1); 1191 rc = __qeth_l2_set_online(card->gdev, 1); 1192 if (!rc) 1193 dev_info(&card->gdev->dev, 1194 "Device successfully recovered!\n"); 1195 else { 1196 qeth_close_dev(card); 1197 dev_warn(&card->gdev->dev, "The qeth device driver " 1198 "failed to recover an error on the device\n"); 1199 } 1200 qeth_clear_recovery_task(card); 1201 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1202 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1203 return 0; 1204 } 1205 1206 static int __init qeth_l2_init(void) 1207 { 1208 pr_info("register layer 2 discipline\n"); 1209 return 0; 1210 } 1211 1212 static void __exit qeth_l2_exit(void) 1213 { 1214 pr_info("unregister layer 2 discipline\n"); 1215 } 1216 1217 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1218 { 1219 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1220 1221 if (card->dev) 1222 netif_device_detach(card->dev); 1223 qeth_set_allowed_threads(card, 0, 1); 1224 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1225 if (gdev->state == CCWGROUP_OFFLINE) 1226 return 0; 1227 if (card->state == CARD_STATE_UP) { 1228 if (card->info.hwtrap) 1229 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1230 __qeth_l2_set_offline(card->gdev, 1); 1231 } else 1232 __qeth_l2_set_offline(card->gdev, 0); 1233 return 0; 1234 } 1235 1236 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1237 { 1238 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1239 int rc = 0; 1240 1241 if (gdev->state == CCWGROUP_OFFLINE) 1242 goto out; 1243 1244 if (card->state == CARD_STATE_RECOVER) { 1245 rc = __qeth_l2_set_online(card->gdev, 1); 1246 if (rc) { 1247 rtnl_lock(); 1248 dev_close(card->dev); 1249 rtnl_unlock(); 1250 } 1251 } else 1252 rc = __qeth_l2_set_online(card->gdev, 0); 1253 out: 1254 qeth_set_allowed_threads(card, 0xffffffff, 0); 1255 if (card->dev) 1256 netif_device_attach(card->dev); 1257 if (rc) 1258 dev_warn(&card->gdev->dev, "The qeth device driver " 1259 "failed to recover an error on the device\n"); 1260 return rc; 1261 } 1262 1263 /* Returns zero if the command is successfully "consumed" */ 1264 static int qeth_l2_control_event(struct qeth_card *card, 1265 struct qeth_ipa_cmd *cmd) 1266 { 1267 switch (cmd->hdr.command) { 1268 case IPA_CMD_SETBRIDGEPORT_OSA: 1269 case IPA_CMD_SETBRIDGEPORT_IQD: 1270 if (cmd->data.sbp.hdr.command_code == 1271 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1272 qeth_bridge_state_change(card, cmd); 1273 return 0; 1274 } else 1275 return 1; 1276 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1277 qeth_bridge_host_event(card, cmd); 1278 return 0; 1279 default: 1280 return 1; 1281 } 1282 } 1283 1284 struct qeth_discipline qeth_l2_discipline = { 1285 .devtype = &qeth_l2_devtype, 1286 .start_poll = qeth_qdio_start_poll, 1287 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1288 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1289 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1290 .recover = qeth_l2_recover, 1291 .setup = qeth_l2_probe_device, 1292 .remove = qeth_l2_remove_device, 1293 .set_online = qeth_l2_set_online, 1294 .set_offline = qeth_l2_set_offline, 1295 .freeze = qeth_l2_pm_suspend, 1296 .thaw = qeth_l2_pm_resume, 1297 .restore = qeth_l2_pm_resume, 1298 .do_ioctl = NULL, 1299 .control_event_handler = qeth_l2_control_event, 1300 }; 1301 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1302 1303 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1304 struct qeth_cmd_buffer *iob) 1305 { 1306 unsigned long flags; 1307 int rc = 0; 1308 1309 QETH_CARD_TEXT(card, 5, "osndctrd"); 1310 1311 wait_event(card->wait_q, 1312 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1313 qeth_prepare_control_data(card, len, iob); 1314 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1315 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1316 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1317 (addr_t) iob, 0, 0); 1318 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1319 if (rc) { 1320 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1321 "ccw_device_start rc = %i\n", rc); 1322 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1323 qeth_release_buffer(iob->channel, iob); 1324 atomic_set(&card->write.irq_pending, 0); 1325 wake_up(&card->wait_q); 1326 } 1327 return rc; 1328 } 1329 1330 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1331 struct qeth_cmd_buffer *iob, int data_len) 1332 { 1333 u16 s1, s2; 1334 1335 QETH_CARD_TEXT(card, 4, "osndipa"); 1336 1337 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1338 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1339 s2 = (u16)data_len; 1340 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1341 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1342 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1343 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1344 return qeth_osn_send_control_data(card, s1, iob); 1345 } 1346 1347 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1348 { 1349 struct qeth_cmd_buffer *iob; 1350 struct qeth_card *card; 1351 int rc; 1352 1353 if (!dev) 1354 return -ENODEV; 1355 card = dev->ml_priv; 1356 if (!card) 1357 return -ENODEV; 1358 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1359 if (!qeth_card_hw_is_reachable(card)) 1360 return -ENODEV; 1361 iob = qeth_wait_for_buffer(&card->write); 1362 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1363 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1364 return rc; 1365 } 1366 EXPORT_SYMBOL(qeth_osn_assist); 1367 1368 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1369 int (*assist_cb)(struct net_device *, void *), 1370 int (*data_cb)(struct sk_buff *)) 1371 { 1372 struct qeth_card *card; 1373 1374 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1375 if (*dev == NULL) 1376 return -ENODEV; 1377 card = (*dev)->ml_priv; 1378 if (!card) 1379 return -ENODEV; 1380 QETH_CARD_TEXT(card, 2, "osnreg"); 1381 if ((assist_cb == NULL) || (data_cb == NULL)) 1382 return -EINVAL; 1383 card->osn_info.assist_cb = assist_cb; 1384 card->osn_info.data_cb = data_cb; 1385 return 0; 1386 } 1387 EXPORT_SYMBOL(qeth_osn_register); 1388 1389 void qeth_osn_deregister(struct net_device *dev) 1390 { 1391 struct qeth_card *card; 1392 1393 if (!dev) 1394 return; 1395 card = dev->ml_priv; 1396 if (!card) 1397 return; 1398 QETH_CARD_TEXT(card, 2, "osndereg"); 1399 card->osn_info.assist_cb = NULL; 1400 card->osn_info.data_cb = NULL; 1401 return; 1402 } 1403 EXPORT_SYMBOL(qeth_osn_deregister); 1404 1405 /* SETBRIDGEPORT support, async notifications */ 1406 1407 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1408 1409 /** 1410 * qeth_bridge_emit_host_event() - bridgeport address change notification 1411 * @card: qeth_card structure pointer, for udev events. 1412 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1413 * and reset token and addr_lnid are unused and may be NULL. 1414 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1415 * object, 0 - addition of an object. 1416 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1417 * @token: "network token" structure identifying physical address of the port. 1418 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1419 * 1420 * This function is called when registrations and deregistrations are 1421 * reported by the hardware, and also when notifications are enabled - 1422 * for all currently registered addresses. 1423 */ 1424 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1425 enum qeth_an_event_type evtype, 1426 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1427 { 1428 char str[7][32]; 1429 char *env[8]; 1430 int i = 0; 1431 1432 switch (evtype) { 1433 case anev_reg_unreg: 1434 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1435 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1436 ? "deregister" : "register"); 1437 env[i] = str[i]; i++; 1438 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1439 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1440 addr_lnid->lnid); 1441 env[i] = str[i]; i++; 1442 } 1443 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1444 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1445 addr_lnid->mac); 1446 env[i] = str[i]; i++; 1447 } 1448 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1449 token->cssid, token->ssid, token->devnum); 1450 env[i] = str[i]; i++; 1451 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1452 env[i] = str[i]; i++; 1453 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1454 token->chpid); 1455 env[i] = str[i]; i++; 1456 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1457 env[i] = str[i]; i++; 1458 break; 1459 case anev_abort: 1460 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1461 env[i] = str[i]; i++; 1462 break; 1463 case anev_reset: 1464 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1465 env[i] = str[i]; i++; 1466 break; 1467 } 1468 env[i] = NULL; 1469 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1470 } 1471 1472 struct qeth_bridge_state_data { 1473 struct work_struct worker; 1474 struct qeth_card *card; 1475 struct qeth_sbp_state_change qports; 1476 }; 1477 1478 static void qeth_bridge_state_change_worker(struct work_struct *work) 1479 { 1480 struct qeth_bridge_state_data *data = 1481 container_of(work, struct qeth_bridge_state_data, worker); 1482 /* We are only interested in the first entry - local port */ 1483 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1484 char env_locrem[32]; 1485 char env_role[32]; 1486 char env_state[32]; 1487 char *env[] = { 1488 env_locrem, 1489 env_role, 1490 env_state, 1491 NULL 1492 }; 1493 1494 /* Role should not change by itself, but if it did, */ 1495 /* information from the hardware is authoritative. */ 1496 mutex_lock(&data->card->conf_mutex); 1497 data->card->options.sbp.role = entry->role; 1498 mutex_unlock(&data->card->conf_mutex); 1499 1500 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1501 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1502 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1503 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1504 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1505 "<INVALID>"); 1506 snprintf(env_state, sizeof(env_state), "STATE=%s", 1507 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1508 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1509 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1510 "<INVALID>"); 1511 kobject_uevent_env(&data->card->gdev->dev.kobj, 1512 KOBJ_CHANGE, env); 1513 kfree(data); 1514 } 1515 1516 static void qeth_bridge_state_change(struct qeth_card *card, 1517 struct qeth_ipa_cmd *cmd) 1518 { 1519 struct qeth_sbp_state_change *qports = 1520 &cmd->data.sbp.data.state_change; 1521 struct qeth_bridge_state_data *data; 1522 int extrasize; 1523 1524 QETH_CARD_TEXT(card, 2, "brstchng"); 1525 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1526 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1527 return; 1528 } 1529 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1530 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1531 GFP_ATOMIC); 1532 if (!data) { 1533 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1534 return; 1535 } 1536 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1537 data->card = card; 1538 memcpy(&data->qports, qports, 1539 sizeof(struct qeth_sbp_state_change) + extrasize); 1540 queue_work(qeth_wq, &data->worker); 1541 } 1542 1543 struct qeth_bridge_host_data { 1544 struct work_struct worker; 1545 struct qeth_card *card; 1546 struct qeth_ipacmd_addr_change hostevs; 1547 }; 1548 1549 static void qeth_bridge_host_event_worker(struct work_struct *work) 1550 { 1551 struct qeth_bridge_host_data *data = 1552 container_of(work, struct qeth_bridge_host_data, worker); 1553 int i; 1554 1555 if (data->hostevs.lost_event_mask) { 1556 dev_info(&data->card->gdev->dev, 1557 "Address notification from the Bridge Port stopped %s (%s)\n", 1558 data->card->dev->name, 1559 (data->hostevs.lost_event_mask == 0x01) 1560 ? "Overflow" 1561 : (data->hostevs.lost_event_mask == 0x02) 1562 ? "Bridge port state change" 1563 : "Unknown reason"); 1564 mutex_lock(&data->card->conf_mutex); 1565 data->card->options.sbp.hostnotification = 0; 1566 mutex_unlock(&data->card->conf_mutex); 1567 qeth_bridge_emit_host_event(data->card, anev_abort, 1568 0, NULL, NULL); 1569 } else 1570 for (i = 0; i < data->hostevs.num_entries; i++) { 1571 struct qeth_ipacmd_addr_change_entry *entry = 1572 &data->hostevs.entry[i]; 1573 qeth_bridge_emit_host_event(data->card, 1574 anev_reg_unreg, 1575 entry->change_code, 1576 &entry->token, &entry->addr_lnid); 1577 } 1578 kfree(data); 1579 } 1580 1581 static void qeth_bridge_host_event(struct qeth_card *card, 1582 struct qeth_ipa_cmd *cmd) 1583 { 1584 struct qeth_ipacmd_addr_change *hostevs = 1585 &cmd->data.addrchange; 1586 struct qeth_bridge_host_data *data; 1587 int extrasize; 1588 1589 QETH_CARD_TEXT(card, 2, "brhostev"); 1590 if (cmd->hdr.return_code != 0x0000) { 1591 if (cmd->hdr.return_code == 0x0010) { 1592 if (hostevs->lost_event_mask == 0x00) 1593 hostevs->lost_event_mask = 0xff; 1594 } else { 1595 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1596 cmd->hdr.return_code); 1597 return; 1598 } 1599 } 1600 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1601 hostevs->num_entries; 1602 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1603 GFP_ATOMIC); 1604 if (!data) { 1605 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1606 return; 1607 } 1608 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1609 data->card = card; 1610 memcpy(&data->hostevs, hostevs, 1611 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1612 queue_work(qeth_wq, &data->worker); 1613 } 1614 1615 /* SETBRIDGEPORT support; sending commands */ 1616 1617 struct _qeth_sbp_cbctl { 1618 u16 ipa_rc; 1619 u16 cmd_rc; 1620 union { 1621 u32 supported; 1622 struct { 1623 enum qeth_sbp_roles *role; 1624 enum qeth_sbp_states *state; 1625 } qports; 1626 } data; 1627 }; 1628 1629 /** 1630 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1631 * @card: qeth_card structure pointer, for debug messages. 1632 * @cbctl: state structure with hardware return codes. 1633 * @setcmd: IPA command code 1634 * 1635 * Returns negative errno-compatible error indication or 0 on success. 1636 */ 1637 static int qeth_bridgeport_makerc(struct qeth_card *card, 1638 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1639 { 1640 int rc; 1641 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1642 1643 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1644 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1645 switch (cbctl->cmd_rc) { 1646 case 0x0000: 1647 rc = 0; 1648 break; 1649 case 0x2B04: 1650 case 0x0004: 1651 rc = -EOPNOTSUPP; 1652 break; 1653 case 0x2B0C: 1654 case 0x000C: /* Not configured as bridge Port */ 1655 rc = -ENODEV; /* maybe not the best code here? */ 1656 dev_err(&card->gdev->dev, 1657 "The device is not configured as a Bridge Port\n"); 1658 break; 1659 case 0x2B10: 1660 case 0x0010: /* OS mismatch */ 1661 rc = -EPERM; 1662 dev_err(&card->gdev->dev, 1663 "A Bridge Port is already configured by a different operating system\n"); 1664 break; 1665 case 0x2B14: 1666 case 0x0014: /* Another device is Primary */ 1667 switch (setcmd) { 1668 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1669 rc = -EEXIST; 1670 dev_err(&card->gdev->dev, 1671 "The LAN already has a primary Bridge Port\n"); 1672 break; 1673 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1674 rc = -EBUSY; 1675 dev_err(&card->gdev->dev, 1676 "The device is already a primary Bridge Port\n"); 1677 break; 1678 default: 1679 rc = -EIO; 1680 } 1681 break; 1682 case 0x2B18: 1683 case 0x0018: /* This device is currently Secondary */ 1684 rc = -EBUSY; 1685 dev_err(&card->gdev->dev, 1686 "The device is already a secondary Bridge Port\n"); 1687 break; 1688 case 0x2B1C: 1689 case 0x001C: /* Limit for Secondary devices reached */ 1690 rc = -EEXIST; 1691 dev_err(&card->gdev->dev, 1692 "The LAN cannot have more secondary Bridge Ports\n"); 1693 break; 1694 case 0x2B24: 1695 case 0x0024: /* This device is currently Primary */ 1696 rc = -EBUSY; 1697 dev_err(&card->gdev->dev, 1698 "The device is already a primary Bridge Port\n"); 1699 break; 1700 case 0x2B20: 1701 case 0x0020: /* Not authorized by zManager */ 1702 rc = -EACCES; 1703 dev_err(&card->gdev->dev, 1704 "The device is not authorized to be a Bridge Port\n"); 1705 break; 1706 default: 1707 rc = -EIO; 1708 } 1709 else 1710 switch (cbctl->ipa_rc) { 1711 case IPA_RC_NOTSUPP: 1712 rc = -EOPNOTSUPP; 1713 break; 1714 case IPA_RC_UNSUPPORTED_COMMAND: 1715 rc = -EOPNOTSUPP; 1716 break; 1717 default: 1718 rc = -EIO; 1719 } 1720 1721 if (rc) { 1722 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1723 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1724 } 1725 return rc; 1726 } 1727 1728 static inline int ipa_cmd_sbp(struct qeth_card *card) 1729 { 1730 return (card->info.type == QETH_CARD_TYPE_IQD) ? 1731 IPA_CMD_SETBRIDGEPORT_IQD : 1732 IPA_CMD_SETBRIDGEPORT_OSA; 1733 } 1734 1735 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1736 struct qeth_reply *reply, unsigned long data) 1737 { 1738 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1739 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1740 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1741 cbctl->ipa_rc = cmd->hdr.return_code; 1742 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1743 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1744 cbctl->data.supported = 1745 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1746 } else { 1747 cbctl->data.supported = 0; 1748 } 1749 return 0; 1750 } 1751 1752 /** 1753 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1754 * @card: qeth_card structure pointer. 1755 * 1756 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1757 * strucutre: card->options.sbp.supported_funcs. 1758 */ 1759 static void qeth_bridgeport_query_support(struct qeth_card *card) 1760 { 1761 struct qeth_cmd_buffer *iob; 1762 struct qeth_ipa_cmd *cmd; 1763 struct _qeth_sbp_cbctl cbctl; 1764 1765 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1766 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1767 if (!iob) 1768 return; 1769 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1770 cmd->data.sbp.hdr.cmdlength = 1771 sizeof(struct qeth_ipacmd_sbp_hdr) + 1772 sizeof(struct qeth_sbp_query_cmds_supp); 1773 cmd->data.sbp.hdr.command_code = 1774 IPA_SBP_QUERY_COMMANDS_SUPPORTED; 1775 cmd->data.sbp.hdr.used_total = 1; 1776 cmd->data.sbp.hdr.seq_no = 1; 1777 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1778 (void *)&cbctl) || 1779 qeth_bridgeport_makerc(card, &cbctl, 1780 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1781 /* non-zero makerc signifies failure, and produce messages */ 1782 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1783 return; 1784 } 1785 card->options.sbp.supported_funcs = cbctl.data.supported; 1786 } 1787 1788 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1789 struct qeth_reply *reply, unsigned long data) 1790 { 1791 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1792 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1793 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1794 1795 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1796 cbctl->ipa_rc = cmd->hdr.return_code; 1797 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1798 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1799 return 0; 1800 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1801 cbctl->cmd_rc = 0xffff; 1802 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1803 return 0; 1804 } 1805 /* first entry contains the state of the local port */ 1806 if (qports->num_entries > 0) { 1807 if (cbctl->data.qports.role) 1808 *cbctl->data.qports.role = qports->entry[0].role; 1809 if (cbctl->data.qports.state) 1810 *cbctl->data.qports.state = qports->entry[0].state; 1811 } 1812 return 0; 1813 } 1814 1815 /** 1816 * qeth_bridgeport_query_ports() - query local bridgeport status. 1817 * @card: qeth_card structure pointer. 1818 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1819 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1820 * 1821 * Returns negative errno-compatible error indication or 0 on success. 1822 * 1823 * 'role' and 'state' are not updated in case of hardware operation failure. 1824 */ 1825 int qeth_bridgeport_query_ports(struct qeth_card *card, 1826 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1827 { 1828 int rc = 0; 1829 struct qeth_cmd_buffer *iob; 1830 struct qeth_ipa_cmd *cmd; 1831 struct _qeth_sbp_cbctl cbctl = { 1832 .data = { 1833 .qports = { 1834 .role = role, 1835 .state = state, 1836 }, 1837 }, 1838 }; 1839 1840 QETH_CARD_TEXT(card, 2, "brqports"); 1841 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1842 return -EOPNOTSUPP; 1843 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1844 if (!iob) 1845 return -ENOMEM; 1846 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1847 cmd->data.sbp.hdr.cmdlength = 1848 sizeof(struct qeth_ipacmd_sbp_hdr); 1849 cmd->data.sbp.hdr.command_code = 1850 IPA_SBP_QUERY_BRIDGE_PORTS; 1851 cmd->data.sbp.hdr.used_total = 1; 1852 cmd->data.sbp.hdr.seq_no = 1; 1853 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1854 (void *)&cbctl); 1855 if (rc < 0) 1856 return rc; 1857 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1858 } 1859 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1860 1861 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1862 struct qeth_reply *reply, unsigned long data) 1863 { 1864 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1865 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1866 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1867 cbctl->ipa_rc = cmd->hdr.return_code; 1868 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1869 return 0; 1870 } 1871 1872 /** 1873 * qeth_bridgeport_setrole() - Assign primary role to the port. 1874 * @card: qeth_card structure pointer. 1875 * @role: Role to assign. 1876 * 1877 * Returns negative errno-compatible error indication or 0 on success. 1878 */ 1879 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1880 { 1881 int rc = 0; 1882 int cmdlength; 1883 struct qeth_cmd_buffer *iob; 1884 struct qeth_ipa_cmd *cmd; 1885 struct _qeth_sbp_cbctl cbctl; 1886 enum qeth_ipa_sbp_cmd setcmd; 1887 1888 QETH_CARD_TEXT(card, 2, "brsetrol"); 1889 switch (role) { 1890 case QETH_SBP_ROLE_NONE: 1891 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1892 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1893 sizeof(struct qeth_sbp_reset_role); 1894 break; 1895 case QETH_SBP_ROLE_PRIMARY: 1896 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1897 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1898 sizeof(struct qeth_sbp_set_primary); 1899 break; 1900 case QETH_SBP_ROLE_SECONDARY: 1901 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1902 cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1903 sizeof(struct qeth_sbp_set_secondary); 1904 break; 1905 default: 1906 return -EINVAL; 1907 } 1908 if (!(card->options.sbp.supported_funcs & setcmd)) 1909 return -EOPNOTSUPP; 1910 iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0); 1911 if (!iob) 1912 return -ENOMEM; 1913 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1914 cmd->data.sbp.hdr.cmdlength = cmdlength; 1915 cmd->data.sbp.hdr.command_code = setcmd; 1916 cmd->data.sbp.hdr.used_total = 1; 1917 cmd->data.sbp.hdr.seq_no = 1; 1918 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 1919 (void *)&cbctl); 1920 if (rc < 0) 1921 return rc; 1922 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 1923 } 1924 1925 /** 1926 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1927 * @card: qeth_card structure pointer, for debug messages. 1928 * 1929 * Returns negative errno-compatible error indication or 0 on success. 1930 */ 1931 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1932 { 1933 int rc; 1934 1935 if (pnso_rc == 0) 1936 switch (response) { 1937 case 0x0001: 1938 rc = 0; 1939 break; 1940 case 0x0004: 1941 case 0x0100: 1942 case 0x0106: 1943 rc = -EOPNOTSUPP; 1944 dev_err(&card->gdev->dev, 1945 "Setting address notification failed\n"); 1946 break; 1947 case 0x0107: 1948 rc = -EAGAIN; 1949 break; 1950 default: 1951 rc = -EIO; 1952 } 1953 else 1954 rc = -EIO; 1955 1956 if (rc) { 1957 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1958 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1959 } 1960 return rc; 1961 } 1962 1963 static void qeth_bridgeport_an_set_cb(void *priv, 1964 enum qdio_brinfo_entry_type type, void *entry) 1965 { 1966 struct qeth_card *card = (struct qeth_card *)priv; 1967 struct qdio_brinfo_entry_l2 *l2entry; 1968 u8 code; 1969 1970 if (type != l2_addr_lnid) { 1971 WARN_ON_ONCE(1); 1972 return; 1973 } 1974 1975 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1976 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1977 if (l2entry->addr_lnid.lnid) 1978 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1979 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1980 (struct net_if_token *)&l2entry->nit, 1981 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1982 } 1983 1984 /** 1985 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1986 * @card: qeth_card structure pointer. 1987 * @enable: 0 - disable, non-zero - enable notifications 1988 * 1989 * Returns negative errno-compatible error indication or 0 on success. 1990 * 1991 * On enable, emits a series of address notifications udev events for all 1992 * currently registered hosts. 1993 */ 1994 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 1995 { 1996 int rc; 1997 u16 response; 1998 struct ccw_device *ddev; 1999 struct subchannel_id schid; 2000 2001 if (!card) 2002 return -EINVAL; 2003 if (!card->options.sbp.supported_funcs) 2004 return -EOPNOTSUPP; 2005 ddev = CARD_DDEV(card); 2006 ccw_device_get_schid(ddev, &schid); 2007 2008 if (enable) { 2009 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2010 rc = qdio_pnso_brinfo(schid, 1, &response, 2011 qeth_bridgeport_an_set_cb, card); 2012 } else 2013 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2014 return qeth_anset_makerc(card, rc, response); 2015 } 2016 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2017 2018 module_init(qeth_l2_init); 2019 module_exit(qeth_l2_exit); 2020 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2021 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2022 MODULE_LICENSE("GPL"); 2023