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 <asm/setup.h> 25 #include "qeth_core.h" 26 #include "qeth_l2.h" 27 28 static int qeth_l2_set_offline(struct ccwgroup_device *); 29 static int qeth_l2_stop(struct net_device *); 30 static void qeth_l2_set_rx_mode(struct net_device *); 31 static void qeth_bridgeport_query_support(struct qeth_card *card); 32 static void qeth_bridge_state_change(struct qeth_card *card, 33 struct qeth_ipa_cmd *cmd); 34 static void qeth_bridge_host_event(struct qeth_card *card, 35 struct qeth_ipa_cmd *cmd); 36 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); 37 static void qeth_l2_vnicc_init(struct qeth_card *card); 38 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 39 u32 *timeout); 40 41 static int qeth_l2_verify_dev(struct net_device *dev) 42 { 43 struct qeth_card *card; 44 unsigned long flags; 45 int rc = 0; 46 47 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 48 list_for_each_entry(card, &qeth_core_card_list.list, list) { 49 if (card->dev == dev) { 50 rc = QETH_REAL_CARD; 51 break; 52 } 53 } 54 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 55 56 return rc; 57 } 58 59 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 60 { 61 struct qeth_card *card; 62 struct net_device *ndev; 63 __u16 temp_dev_no; 64 unsigned long flags; 65 struct ccw_dev_id read_devid; 66 67 ndev = NULL; 68 memcpy(&temp_dev_no, read_dev_no, 2); 69 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 70 list_for_each_entry(card, &qeth_core_card_list.list, list) { 71 ccw_device_get_id(CARD_RDEV(card), &read_devid); 72 if (read_devid.devno == temp_dev_no) { 73 ndev = card->dev; 74 break; 75 } 76 } 77 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 78 return ndev; 79 } 80 81 static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode) 82 { 83 int rc; 84 85 if (retcode) 86 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 87 switch (retcode) { 88 case IPA_RC_SUCCESS: 89 rc = 0; 90 break; 91 case IPA_RC_L2_UNSUPPORTED_CMD: 92 rc = -EOPNOTSUPP; 93 break; 94 case IPA_RC_L2_ADDR_TABLE_FULL: 95 rc = -ENOSPC; 96 break; 97 case IPA_RC_L2_DUP_MAC: 98 case IPA_RC_L2_DUP_LAYER3_MAC: 99 rc = -EEXIST; 100 break; 101 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 102 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 103 rc = -EPERM; 104 break; 105 case IPA_RC_L2_MAC_NOT_FOUND: 106 rc = -ENOENT; 107 break; 108 case -ENOMEM: 109 rc = -ENOMEM; 110 break; 111 default: 112 rc = -EIO; 113 break; 114 } 115 return rc; 116 } 117 118 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 119 enum qeth_ipa_cmds ipacmd) 120 { 121 struct qeth_ipa_cmd *cmd; 122 struct qeth_cmd_buffer *iob; 123 124 QETH_CARD_TEXT(card, 2, "L2sdmac"); 125 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 126 if (!iob) 127 return -ENOMEM; 128 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 129 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 130 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 131 return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob, 132 NULL, NULL)); 133 } 134 135 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 136 { 137 int rc; 138 139 QETH_CARD_TEXT(card, 2, "L2Setmac"); 140 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 141 if (rc == 0) { 142 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 143 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN); 144 dev_info(&card->gdev->dev, 145 "MAC address %pM successfully registered on device %s\n", 146 card->dev->dev_addr, card->dev->name); 147 } else { 148 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 149 switch (rc) { 150 case -EEXIST: 151 dev_warn(&card->gdev->dev, 152 "MAC address %pM already exists\n", mac); 153 break; 154 case -EPERM: 155 dev_warn(&card->gdev->dev, 156 "MAC address %pM is not authorized\n", mac); 157 break; 158 } 159 } 160 return rc; 161 } 162 163 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 164 { 165 int rc; 166 167 QETH_CARD_TEXT(card, 2, "L2Delmac"); 168 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 169 return 0; 170 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC); 171 if (rc == 0) 172 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 173 return rc; 174 } 175 176 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) 177 { 178 int rc; 179 180 QETH_CARD_TEXT(card, 2, "L2Sgmac"); 181 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC); 182 if (rc == -EEXIST) 183 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n", 184 mac, QETH_CARD_IFNAME(card)); 185 else if (rc) 186 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n", 187 mac, QETH_CARD_IFNAME(card), rc); 188 return rc; 189 } 190 191 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) 192 { 193 int rc; 194 195 QETH_CARD_TEXT(card, 2, "L2Dgmac"); 196 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC); 197 if (rc) 198 QETH_DBF_MESSAGE(2, 199 "Could not delete group MAC %pM on %s: %d\n", 200 mac, QETH_CARD_IFNAME(card), rc); 201 return rc; 202 } 203 204 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac) 205 { 206 if (mac->is_uc) { 207 return qeth_l2_send_setdelmac(card, mac->mac_addr, 208 IPA_CMD_SETVMAC); 209 } else { 210 return qeth_l2_send_setgroupmac(card, mac->mac_addr); 211 } 212 } 213 214 static int qeth_l2_remove_mac(struct qeth_card *card, struct qeth_mac *mac) 215 { 216 if (mac->is_uc) { 217 return qeth_l2_send_setdelmac(card, mac->mac_addr, 218 IPA_CMD_DELVMAC); 219 } else { 220 return qeth_l2_send_delgroupmac(card, mac->mac_addr); 221 } 222 } 223 224 static void qeth_l2_del_all_macs(struct qeth_card *card) 225 { 226 struct qeth_mac *mac; 227 struct hlist_node *tmp; 228 int i; 229 230 spin_lock_bh(&card->mclock); 231 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 232 hash_del(&mac->hnode); 233 kfree(mac); 234 } 235 spin_unlock_bh(&card->mclock); 236 } 237 238 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 239 { 240 if (card->info.type == QETH_CARD_TYPE_OSN) 241 return RTN_UNSPEC; 242 if (is_broadcast_ether_addr(skb->data)) 243 return RTN_BROADCAST; 244 if (is_multicast_ether_addr(skb->data)) 245 return RTN_MULTICAST; 246 return RTN_UNSPEC; 247 } 248 249 static void qeth_l2_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr, 250 struct sk_buff *skb) 251 { 252 struct iphdr *iph = ip_hdr(skb); 253 254 /* tcph->check contains already the pseudo hdr checksum 255 * so just set the header flags 256 */ 257 if (iph->protocol == IPPROTO_UDP) 258 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; 259 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 260 QETH_HDR_EXT_CSUM_HDR_REQ; 261 iph->check = 0; 262 if (card->options.performance_stats) 263 card->perf_stats.tx_csum++; 264 } 265 266 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb, 267 int cast_type, unsigned int data_len) 268 { 269 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 270 271 memset(hdr, 0, sizeof(struct qeth_hdr)); 272 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 273 hdr->hdr.l2.pkt_length = data_len; 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 /* VSWITCH relies on the VLAN 284 * information to be present in 285 * the QDIO header */ 286 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 287 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 288 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 289 } 290 } 291 292 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode) 293 { 294 if (retcode) 295 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 296 297 switch (retcode) { 298 case IPA_RC_SUCCESS: 299 return 0; 300 case IPA_RC_L2_INVALID_VLAN_ID: 301 return -EINVAL; 302 case IPA_RC_L2_DUP_VLAN_ID: 303 return -EEXIST; 304 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 305 return -ENOENT; 306 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 307 return -EPERM; 308 case -ENOMEM: 309 return -ENOMEM; 310 default: 311 return -EIO; 312 } 313 } 314 315 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 316 struct qeth_reply *reply, 317 unsigned long data) 318 { 319 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 320 321 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 322 if (cmd->hdr.return_code) { 323 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n", 324 cmd->data.setdelvlan.vlan_id, 325 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 326 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 327 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 328 } 329 return 0; 330 } 331 332 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 333 enum qeth_ipa_cmds ipacmd) 334 { 335 struct qeth_ipa_cmd *cmd; 336 struct qeth_cmd_buffer *iob; 337 338 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 339 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 340 if (!iob) 341 return -ENOMEM; 342 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 343 cmd->data.setdelvlan.vlan_id = i; 344 return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob, 345 qeth_l2_send_setdelvlan_cb, NULL)); 346 } 347 348 static void qeth_l2_process_vlans(struct qeth_card *card) 349 { 350 struct qeth_vlan_vid *id; 351 QETH_CARD_TEXT(card, 3, "L2prcvln"); 352 spin_lock_bh(&card->vlanlock); 353 list_for_each_entry(id, &card->vid_list, list) { 354 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 355 } 356 spin_unlock_bh(&card->vlanlock); 357 } 358 359 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 360 __be16 proto, u16 vid) 361 { 362 struct qeth_card *card = dev->ml_priv; 363 struct qeth_vlan_vid *id; 364 int rc; 365 366 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 367 if (!vid) 368 return 0; 369 if (card->info.type == QETH_CARD_TYPE_OSM) { 370 QETH_CARD_TEXT(card, 3, "aidOSM"); 371 return 0; 372 } 373 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 374 QETH_CARD_TEXT(card, 3, "aidREC"); 375 return 0; 376 } 377 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 378 if (id) { 379 id->vid = vid; 380 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 381 if (rc) { 382 kfree(id); 383 return rc; 384 } 385 spin_lock_bh(&card->vlanlock); 386 list_add_tail(&id->list, &card->vid_list); 387 spin_unlock_bh(&card->vlanlock); 388 } else { 389 return -ENOMEM; 390 } 391 return 0; 392 } 393 394 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 395 __be16 proto, u16 vid) 396 { 397 struct qeth_vlan_vid *id, *tmpid = NULL; 398 struct qeth_card *card = dev->ml_priv; 399 int rc = 0; 400 401 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 402 if (card->info.type == QETH_CARD_TYPE_OSM) { 403 QETH_CARD_TEXT(card, 3, "kidOSM"); 404 return 0; 405 } 406 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 407 QETH_CARD_TEXT(card, 3, "kidREC"); 408 return 0; 409 } 410 spin_lock_bh(&card->vlanlock); 411 list_for_each_entry(id, &card->vid_list, list) { 412 if (id->vid == vid) { 413 list_del(&id->list); 414 tmpid = id; 415 break; 416 } 417 } 418 spin_unlock_bh(&card->vlanlock); 419 if (tmpid) { 420 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 421 kfree(tmpid); 422 } 423 qeth_l2_set_rx_mode(card->dev); 424 return rc; 425 } 426 427 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 428 { 429 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 430 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 431 432 qeth_set_allowed_threads(card, 0, 1); 433 if (card->read.state == CH_STATE_UP && 434 card->write.state == CH_STATE_UP && 435 (card->state == CARD_STATE_UP)) { 436 if (recovery_mode && 437 card->info.type != QETH_CARD_TYPE_OSN) { 438 qeth_l2_stop(card->dev); 439 } else { 440 rtnl_lock(); 441 dev_close(card->dev); 442 rtnl_unlock(); 443 } 444 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 445 card->state = CARD_STATE_SOFTSETUP; 446 } 447 if (card->state == CARD_STATE_SOFTSETUP) { 448 qeth_l2_del_all_macs(card); 449 qeth_clear_ipacmd_list(card); 450 card->state = CARD_STATE_HARDSETUP; 451 } 452 if (card->state == CARD_STATE_HARDSETUP) { 453 qeth_qdio_clear_card(card, 0); 454 qeth_clear_qdio_buffers(card); 455 qeth_clear_working_pool_list(card); 456 card->state = CARD_STATE_DOWN; 457 } 458 if (card->state == CARD_STATE_DOWN) { 459 qeth_clear_cmd_buffers(&card->read); 460 qeth_clear_cmd_buffers(&card->write); 461 } 462 } 463 464 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 465 int budget, int *done) 466 { 467 int work_done = 0; 468 struct sk_buff *skb; 469 struct qeth_hdr *hdr; 470 unsigned int len; 471 472 *done = 0; 473 WARN_ON_ONCE(!budget); 474 while (budget) { 475 skb = qeth_core_get_next_skb(card, 476 &card->qdio.in_q->bufs[card->rx.b_index], 477 &card->rx.b_element, &card->rx.e_offset, &hdr); 478 if (!skb) { 479 *done = 1; 480 break; 481 } 482 skb->dev = card->dev; 483 switch (hdr->hdr.l2.id) { 484 case QETH_HEADER_TYPE_LAYER2: 485 skb->pkt_type = PACKET_HOST; 486 skb->protocol = eth_type_trans(skb, skb->dev); 487 if ((card->dev->features & NETIF_F_RXCSUM) 488 && ((hdr->hdr.l2.flags[1] & 489 (QETH_HDR_EXT_CSUM_HDR_REQ | 490 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 491 (QETH_HDR_EXT_CSUM_HDR_REQ | 492 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 493 skb->ip_summed = CHECKSUM_UNNECESSARY; 494 else 495 skb->ip_summed = CHECKSUM_NONE; 496 if (skb->protocol == htons(ETH_P_802_2)) 497 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 498 len = skb->len; 499 napi_gro_receive(&card->napi, skb); 500 break; 501 case QETH_HEADER_TYPE_OSN: 502 if (card->info.type == QETH_CARD_TYPE_OSN) { 503 skb_push(skb, sizeof(struct qeth_hdr)); 504 skb_copy_to_linear_data(skb, hdr, 505 sizeof(struct qeth_hdr)); 506 len = skb->len; 507 card->osn_info.data_cb(skb); 508 break; 509 } 510 /* else unknown */ 511 default: 512 dev_kfree_skb_any(skb); 513 QETH_CARD_TEXT(card, 3, "inbunkno"); 514 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 515 continue; 516 } 517 work_done++; 518 budget--; 519 card->stats.rx_packets++; 520 card->stats.rx_bytes += len; 521 } 522 return work_done; 523 } 524 525 static int qeth_l2_request_initial_mac(struct qeth_card *card) 526 { 527 int rc = 0; 528 char vendor_pre[] = {0x02, 0x00, 0x00}; 529 530 QETH_DBF_TEXT(SETUP, 2, "l2reqmac"); 531 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 532 533 if (MACHINE_IS_VM) { 534 rc = qeth_vm_request_mac(card); 535 if (!rc) 536 goto out; 537 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n", 538 CARD_BUS_ID(card), rc); 539 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc); 540 /* fall back to alternative mechanism: */ 541 } 542 543 if (card->info.type == QETH_CARD_TYPE_IQD || 544 card->info.type == QETH_CARD_TYPE_OSM || 545 card->info.type == QETH_CARD_TYPE_OSX || 546 card->info.guestlan) { 547 rc = qeth_setadpparms_change_macaddr(card); 548 if (rc) { 549 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 550 "device %s: x%x\n", CARD_BUS_ID(card), rc); 551 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 552 return rc; 553 } 554 } else { 555 eth_random_addr(card->dev->dev_addr); 556 memcpy(card->dev->dev_addr, vendor_pre, 3); 557 } 558 out: 559 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len); 560 return 0; 561 } 562 563 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 564 { 565 struct sockaddr *addr = p; 566 struct qeth_card *card = dev->ml_priv; 567 int rc = 0; 568 569 QETH_CARD_TEXT(card, 3, "setmac"); 570 571 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { 572 QETH_CARD_TEXT(card, 3, "setmcINV"); 573 return -EOPNOTSUPP; 574 } 575 576 if (card->info.type == QETH_CARD_TYPE_OSN || 577 card->info.type == QETH_CARD_TYPE_OSM || 578 card->info.type == QETH_CARD_TYPE_OSX) { 579 QETH_CARD_TEXT(card, 3, "setmcTYP"); 580 return -EOPNOTSUPP; 581 } 582 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN); 583 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 584 QETH_CARD_TEXT(card, 3, "setmcREC"); 585 return -ERESTARTSYS; 586 } 587 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 588 if (!rc || (rc == -ENOENT)) 589 rc = qeth_l2_send_setmac(card, addr->sa_data); 590 return rc ? -EINVAL : 0; 591 } 592 593 static void qeth_promisc_to_bridge(struct qeth_card *card) 594 { 595 struct net_device *dev = card->dev; 596 enum qeth_ipa_promisc_modes promisc_mode; 597 int role; 598 int rc; 599 600 QETH_CARD_TEXT(card, 3, "pmisc2br"); 601 602 if (!card->options.sbp.reflect_promisc) 603 return; 604 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 605 : SET_PROMISC_MODE_OFF; 606 if (promisc_mode == card->info.promisc_mode) 607 return; 608 609 if (promisc_mode == SET_PROMISC_MODE_ON) { 610 if (card->options.sbp.reflect_promisc_primary) 611 role = QETH_SBP_ROLE_PRIMARY; 612 else 613 role = QETH_SBP_ROLE_SECONDARY; 614 } else 615 role = QETH_SBP_ROLE_NONE; 616 617 rc = qeth_bridgeport_setrole(card, role); 618 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 619 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 620 if (!rc) { 621 card->options.sbp.role = role; 622 card->info.promisc_mode = promisc_mode; 623 } 624 625 } 626 /* New MAC address is added to the hash table and marked to be written on card 627 * only if there is not in the hash table storage already 628 * 629 */ 630 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, 631 u8 is_uc) 632 { 633 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 634 struct qeth_mac *mac; 635 636 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 637 if (is_uc == mac->is_uc && 638 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) { 639 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 640 return; 641 } 642 } 643 644 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 645 646 if (!mac) 647 return; 648 649 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN); 650 mac->is_uc = is_uc; 651 mac->disp_flag = QETH_DISP_ADDR_ADD; 652 653 hash_add(card->mac_htable, &mac->hnode, mac_hash); 654 } 655 656 static void qeth_l2_set_rx_mode(struct net_device *dev) 657 { 658 struct qeth_card *card = dev->ml_priv; 659 struct netdev_hw_addr *ha; 660 struct qeth_mac *mac; 661 struct hlist_node *tmp; 662 int i; 663 int rc; 664 665 if (card->info.type == QETH_CARD_TYPE_OSN) 666 return; 667 668 QETH_CARD_TEXT(card, 3, "setmulti"); 669 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 670 (card->state != CARD_STATE_UP)) 671 return; 672 673 spin_lock_bh(&card->mclock); 674 675 netdev_for_each_mc_addr(ha, dev) 676 qeth_l2_add_mac(card, ha, 0); 677 678 netdev_for_each_uc_addr(ha, dev) 679 qeth_l2_add_mac(card, ha, 1); 680 681 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 682 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) { 683 qeth_l2_remove_mac(card, mac); 684 hash_del(&mac->hnode); 685 kfree(mac); 686 687 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) { 688 rc = qeth_l2_write_mac(card, mac); 689 if (rc) { 690 hash_del(&mac->hnode); 691 kfree(mac); 692 } else 693 mac->disp_flag = QETH_DISP_ADDR_DELETE; 694 } else 695 mac->disp_flag = QETH_DISP_ADDR_DELETE; 696 } 697 698 spin_unlock_bh(&card->mclock); 699 700 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 701 qeth_setadp_promisc_mode(card); 702 else 703 qeth_promisc_to_bridge(card); 704 } 705 706 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb, 707 struct qeth_qdio_out_q *queue, int cast_type) 708 { 709 unsigned int data_offset = ETH_HLEN; 710 struct qeth_hdr *hdr; 711 int rc; 712 713 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 714 if (!hdr) 715 return -ENOMEM; 716 qeth_l2_fill_header(hdr, skb, cast_type, skb->len); 717 skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr), 718 data_offset); 719 720 if (!qeth_get_elements_no(card, skb, 1, data_offset)) { 721 rc = -E2BIG; 722 goto out; 723 } 724 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, 725 sizeof(*hdr) + data_offset); 726 out: 727 if (rc) 728 kmem_cache_free(qeth_core_header_cache, hdr); 729 return rc; 730 } 731 732 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb, 733 struct qeth_qdio_out_q *queue, int cast_type) 734 { 735 int push_len = sizeof(struct qeth_hdr); 736 unsigned int elements, nr_frags; 737 unsigned int hdr_elements = 0; 738 struct qeth_hdr *hdr = NULL; 739 unsigned int hd_len = 0; 740 int rc; 741 742 /* fix hardware limitation: as long as we do not have sbal 743 * chaining we can not send long frag lists 744 */ 745 if (!qeth_get_elements_no(card, skb, 0, 0)) { 746 rc = skb_linearize(skb); 747 748 if (card->options.performance_stats) { 749 if (rc) 750 card->perf_stats.tx_linfail++; 751 else 752 card->perf_stats.tx_lin++; 753 } 754 if (rc) 755 return rc; 756 } 757 nr_frags = skb_shinfo(skb)->nr_frags; 758 759 rc = skb_cow_head(skb, push_len); 760 if (rc) 761 return rc; 762 push_len = qeth_push_hdr(skb, &hdr, push_len); 763 if (push_len < 0) 764 return push_len; 765 if (!push_len) { 766 /* hdr was allocated from cache */ 767 hd_len = sizeof(*hdr); 768 hdr_elements = 1; 769 } 770 qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len); 771 if (skb->ip_summed == CHECKSUM_PARTIAL) 772 qeth_l2_hdr_csum(card, hdr, skb); 773 774 elements = qeth_get_elements_no(card, skb, hdr_elements, 0); 775 if (!elements) { 776 rc = -E2BIG; 777 goto out; 778 } 779 elements += hdr_elements; 780 781 /* TODO: remove the skb_orphan() once TX completion is fast enough */ 782 skb_orphan(skb); 783 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements); 784 out: 785 if (!rc) { 786 if (card->options.performance_stats && nr_frags) { 787 card->perf_stats.sg_skbs_sent++; 788 /* nr_frags + skb->data */ 789 card->perf_stats.sg_frags_sent += nr_frags + 1; 790 } 791 } else { 792 if (hd_len) 793 kmem_cache_free(qeth_core_header_cache, hdr); 794 if (rc == -EBUSY) 795 /* roll back to ETH header */ 796 skb_pull(skb, push_len); 797 } 798 return rc; 799 } 800 801 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 802 struct qeth_qdio_out_q *queue) 803 { 804 unsigned int elements; 805 struct qeth_hdr *hdr; 806 807 if (skb->protocol == htons(ETH_P_IPV6)) 808 return -EPROTONOSUPPORT; 809 810 hdr = (struct qeth_hdr *)skb->data; 811 elements = qeth_get_elements_no(card, skb, 0, 0); 812 if (!elements) 813 return -E2BIG; 814 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr))) 815 return -EINVAL; 816 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements); 817 } 818 819 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 820 struct net_device *dev) 821 { 822 struct qeth_card *card = dev->ml_priv; 823 int cast_type = qeth_l2_get_cast_type(card, skb); 824 struct qeth_qdio_out_q *queue; 825 int tx_bytes = skb->len; 826 int rc; 827 828 if (card->qdio.do_prio_queueing || (cast_type && 829 card->info.is_multicast_different)) 830 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 831 qeth_get_ip_version(skb), cast_type)]; 832 else 833 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 834 835 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 836 card->stats.tx_carrier_errors++; 837 goto tx_drop; 838 } 839 840 if (card->options.performance_stats) { 841 card->perf_stats.outbound_cnt++; 842 card->perf_stats.outbound_start_time = qeth_get_micros(); 843 } 844 netif_stop_queue(dev); 845 846 switch (card->info.type) { 847 case QETH_CARD_TYPE_OSN: 848 rc = qeth_l2_xmit_osn(card, skb, queue); 849 break; 850 case QETH_CARD_TYPE_IQD: 851 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type); 852 break; 853 default: 854 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type); 855 } 856 857 if (!rc) { 858 card->stats.tx_packets++; 859 card->stats.tx_bytes += tx_bytes; 860 if (card->options.performance_stats) 861 card->perf_stats.outbound_time += qeth_get_micros() - 862 card->perf_stats.outbound_start_time; 863 netif_wake_queue(dev); 864 return NETDEV_TX_OK; 865 } else if (rc == -EBUSY) { 866 return NETDEV_TX_BUSY; 867 } /* else fall through */ 868 869 tx_drop: 870 card->stats.tx_dropped++; 871 card->stats.tx_errors++; 872 dev_kfree_skb_any(skb); 873 netif_wake_queue(dev); 874 return NETDEV_TX_OK; 875 } 876 877 static int __qeth_l2_open(struct net_device *dev) 878 { 879 struct qeth_card *card = dev->ml_priv; 880 int rc = 0; 881 882 QETH_CARD_TEXT(card, 4, "qethopen"); 883 if (card->state == CARD_STATE_UP) 884 return rc; 885 if (card->state != CARD_STATE_SOFTSETUP) 886 return -ENODEV; 887 888 if ((card->info.type != QETH_CARD_TYPE_OSN) && 889 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 890 QETH_CARD_TEXT(card, 4, "nomacadr"); 891 return -EPERM; 892 } 893 card->data.state = CH_STATE_UP; 894 card->state = CARD_STATE_UP; 895 netif_start_queue(dev); 896 897 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 898 napi_enable(&card->napi); 899 napi_schedule(&card->napi); 900 } else 901 rc = -EIO; 902 return rc; 903 } 904 905 static int qeth_l2_open(struct net_device *dev) 906 { 907 struct qeth_card *card = dev->ml_priv; 908 909 QETH_CARD_TEXT(card, 5, "qethope_"); 910 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 911 QETH_CARD_TEXT(card, 3, "openREC"); 912 return -ERESTARTSYS; 913 } 914 return __qeth_l2_open(dev); 915 } 916 917 static int qeth_l2_stop(struct net_device *dev) 918 { 919 struct qeth_card *card = dev->ml_priv; 920 921 QETH_CARD_TEXT(card, 4, "qethstop"); 922 netif_tx_disable(dev); 923 if (card->state == CARD_STATE_UP) { 924 card->state = CARD_STATE_SOFTSETUP; 925 napi_disable(&card->napi); 926 } 927 return 0; 928 } 929 930 static const struct device_type qeth_l2_devtype = { 931 .name = "qeth_layer2", 932 .groups = qeth_l2_attr_groups, 933 }; 934 935 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 936 { 937 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 938 int rc; 939 940 if (gdev->dev.type == &qeth_generic_devtype) { 941 rc = qeth_l2_create_device_attributes(&gdev->dev); 942 if (rc) 943 return rc; 944 } 945 INIT_LIST_HEAD(&card->vid_list); 946 hash_init(card->mac_htable); 947 card->options.layer2 = 1; 948 card->info.hwtrap = 0; 949 qeth_l2_vnicc_set_defaults(card); 950 return 0; 951 } 952 953 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 954 { 955 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 956 957 if (cgdev->dev.type == &qeth_generic_devtype) 958 qeth_l2_remove_device_attributes(&cgdev->dev); 959 qeth_set_allowed_threads(card, 0, 1); 960 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 961 962 if (cgdev->state == CCWGROUP_ONLINE) 963 qeth_l2_set_offline(cgdev); 964 965 if (card->dev) { 966 netif_napi_del(&card->napi); 967 unregister_netdev(card->dev); 968 card->dev = NULL; 969 } 970 return; 971 } 972 973 static const struct ethtool_ops qeth_l2_ethtool_ops = { 974 .get_link = ethtool_op_get_link, 975 .get_strings = qeth_core_get_strings, 976 .get_ethtool_stats = qeth_core_get_ethtool_stats, 977 .get_sset_count = qeth_core_get_sset_count, 978 .get_drvinfo = qeth_core_get_drvinfo, 979 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 980 }; 981 982 static const struct ethtool_ops qeth_l2_osn_ops = { 983 .get_strings = qeth_core_get_strings, 984 .get_ethtool_stats = qeth_core_get_ethtool_stats, 985 .get_sset_count = qeth_core_get_sset_count, 986 .get_drvinfo = qeth_core_get_drvinfo, 987 }; 988 989 static const struct net_device_ops qeth_l2_netdev_ops = { 990 .ndo_open = qeth_l2_open, 991 .ndo_stop = qeth_l2_stop, 992 .ndo_get_stats = qeth_get_stats, 993 .ndo_start_xmit = qeth_l2_hard_start_xmit, 994 .ndo_validate_addr = eth_validate_addr, 995 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 996 .ndo_do_ioctl = qeth_do_ioctl, 997 .ndo_set_mac_address = qeth_l2_set_mac_address, 998 .ndo_change_mtu = qeth_change_mtu, 999 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 1000 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 1001 .ndo_tx_timeout = qeth_tx_timeout, 1002 .ndo_fix_features = qeth_fix_features, 1003 .ndo_set_features = qeth_set_features 1004 }; 1005 1006 static int qeth_l2_setup_netdev(struct qeth_card *card) 1007 { 1008 switch (card->info.type) { 1009 case QETH_CARD_TYPE_IQD: 1010 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 1011 ether_setup); 1012 break; 1013 case QETH_CARD_TYPE_OSN: 1014 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 1015 ether_setup); 1016 break; 1017 default: 1018 card->dev = alloc_etherdev(0); 1019 } 1020 1021 if (!card->dev) 1022 return -ENODEV; 1023 1024 card->dev->ml_priv = card; 1025 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 1026 card->dev->mtu = card->info.initial_mtu; 1027 card->dev->min_mtu = 64; 1028 card->dev->max_mtu = ETH_MAX_MTU; 1029 card->dev->netdev_ops = &qeth_l2_netdev_ops; 1030 if (card->info.type == QETH_CARD_TYPE_OSN) { 1031 card->dev->ethtool_ops = &qeth_l2_osn_ops; 1032 card->dev->flags |= IFF_NOARP; 1033 } else { 1034 card->dev->ethtool_ops = &qeth_l2_ethtool_ops; 1035 } 1036 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 1037 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 1038 card->dev->hw_features = NETIF_F_SG; 1039 card->dev->vlan_features = NETIF_F_SG; 1040 /* OSA 3S and earlier has no RX/TX support */ 1041 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 1042 card->dev->hw_features |= NETIF_F_IP_CSUM; 1043 card->dev->vlan_features |= NETIF_F_IP_CSUM; 1044 } 1045 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 1046 card->dev->hw_features |= NETIF_F_RXCSUM; 1047 card->dev->vlan_features |= NETIF_F_RXCSUM; 1048 } 1049 } 1050 if (card->info.type != QETH_CARD_TYPE_OSN && 1051 card->info.type != QETH_CARD_TYPE_IQD) { 1052 card->dev->priv_flags &= ~IFF_TX_SKB_SHARING; 1053 card->dev->needed_headroom = sizeof(struct qeth_hdr); 1054 } 1055 1056 card->info.broadcast_capable = 1; 1057 qeth_l2_request_initial_mac(card); 1058 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) * 1059 PAGE_SIZE; 1060 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1061 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 1062 netif_carrier_off(card->dev); 1063 return register_netdev(card->dev); 1064 } 1065 1066 static int qeth_l2_start_ipassists(struct qeth_card *card) 1067 { 1068 /* configure isolation level */ 1069 if (qeth_set_access_ctrl_online(card, 0)) 1070 return -ENODEV; 1071 return 0; 1072 } 1073 1074 static void qeth_l2_trace_features(struct qeth_card *card) 1075 { 1076 /* Set BridgePort features */ 1077 QETH_CARD_TEXT(card, 2, "featuSBP"); 1078 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 1079 sizeof(card->options.sbp.supported_funcs)); 1080 /* VNIC Characteristics features */ 1081 QETH_CARD_TEXT(card, 2, "feaVNICC"); 1082 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 1083 sizeof(card->options.vnicc.sup_chars)); 1084 } 1085 1086 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1087 { 1088 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1089 int rc = 0; 1090 enum qeth_card_states recover_flag; 1091 1092 mutex_lock(&card->discipline_mutex); 1093 mutex_lock(&card->conf_mutex); 1094 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1095 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1096 1097 recover_flag = card->state; 1098 rc = qeth_core_hardsetup_card(card); 1099 if (rc) { 1100 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1101 rc = -ENODEV; 1102 goto out_remove; 1103 } 1104 qeth_bridgeport_query_support(card); 1105 if (card->options.sbp.supported_funcs) 1106 dev_info(&card->gdev->dev, 1107 "The device represents a Bridge Capable Port\n"); 1108 1109 if (!card->dev && qeth_l2_setup_netdev(card)) { 1110 rc = -ENODEV; 1111 goto out_remove; 1112 } 1113 1114 if (card->info.type != QETH_CARD_TYPE_OSN) 1115 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1116 1117 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1118 if (card->info.hwtrap && 1119 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1120 card->info.hwtrap = 0; 1121 } else 1122 card->info.hwtrap = 0; 1123 1124 /* for the rx_bcast characteristic, init VNICC after setmac */ 1125 qeth_l2_vnicc_init(card); 1126 1127 qeth_trace_features(card); 1128 qeth_l2_trace_features(card); 1129 1130 qeth_l2_setup_bridgeport_attrs(card); 1131 1132 card->state = CARD_STATE_HARDSETUP; 1133 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1134 qeth_print_status_message(card); 1135 1136 /* softsetup */ 1137 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1138 1139 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1140 (card->info.type == QETH_CARD_TYPE_OSX)) { 1141 rc = qeth_l2_start_ipassists(card); 1142 if (rc) 1143 goto out_remove; 1144 } 1145 1146 if (card->info.type != QETH_CARD_TYPE_OSN && 1147 card->info.type != QETH_CARD_TYPE_OSM) 1148 qeth_l2_process_vlans(card); 1149 1150 netif_tx_disable(card->dev); 1151 1152 rc = qeth_init_qdio_queues(card); 1153 if (rc) { 1154 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1155 rc = -ENODEV; 1156 goto out_remove; 1157 } 1158 card->state = CARD_STATE_SOFTSETUP; 1159 if (card->lan_online) 1160 netif_carrier_on(card->dev); 1161 else 1162 netif_carrier_off(card->dev); 1163 1164 qeth_set_allowed_threads(card, 0xffffffff, 0); 1165 if (recover_flag == CARD_STATE_RECOVER) { 1166 if (recovery_mode && 1167 card->info.type != QETH_CARD_TYPE_OSN) { 1168 __qeth_l2_open(card->dev); 1169 } else { 1170 rtnl_lock(); 1171 dev_open(card->dev); 1172 rtnl_unlock(); 1173 } 1174 /* this also sets saved unicast addresses */ 1175 qeth_l2_set_rx_mode(card->dev); 1176 rtnl_lock(); 1177 qeth_recover_features(card->dev); 1178 rtnl_unlock(); 1179 } 1180 /* let user_space know that device is online */ 1181 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1182 mutex_unlock(&card->conf_mutex); 1183 mutex_unlock(&card->discipline_mutex); 1184 return 0; 1185 1186 out_remove: 1187 qeth_l2_stop_card(card, 0); 1188 ccw_device_set_offline(CARD_DDEV(card)); 1189 ccw_device_set_offline(CARD_WDEV(card)); 1190 ccw_device_set_offline(CARD_RDEV(card)); 1191 qdio_free(CARD_DDEV(card)); 1192 if (recover_flag == CARD_STATE_RECOVER) 1193 card->state = CARD_STATE_RECOVER; 1194 else 1195 card->state = CARD_STATE_DOWN; 1196 mutex_unlock(&card->conf_mutex); 1197 mutex_unlock(&card->discipline_mutex); 1198 return rc; 1199 } 1200 1201 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1202 { 1203 return __qeth_l2_set_online(gdev, 0); 1204 } 1205 1206 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1207 int recovery_mode) 1208 { 1209 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1210 int rc = 0, rc2 = 0, rc3 = 0; 1211 enum qeth_card_states recover_flag; 1212 1213 mutex_lock(&card->discipline_mutex); 1214 mutex_lock(&card->conf_mutex); 1215 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1216 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1217 1218 if (card->dev && netif_carrier_ok(card->dev)) 1219 netif_carrier_off(card->dev); 1220 recover_flag = card->state; 1221 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1222 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1223 card->info.hwtrap = 1; 1224 } 1225 qeth_l2_stop_card(card, recovery_mode); 1226 rc = ccw_device_set_offline(CARD_DDEV(card)); 1227 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1228 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1229 if (!rc) 1230 rc = (rc2) ? rc2 : rc3; 1231 if (rc) 1232 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1233 qdio_free(CARD_DDEV(card)); 1234 if (recover_flag == CARD_STATE_UP) 1235 card->state = CARD_STATE_RECOVER; 1236 /* let user_space know that device is offline */ 1237 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1238 mutex_unlock(&card->conf_mutex); 1239 mutex_unlock(&card->discipline_mutex); 1240 return 0; 1241 } 1242 1243 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1244 { 1245 return __qeth_l2_set_offline(cgdev, 0); 1246 } 1247 1248 static int qeth_l2_recover(void *ptr) 1249 { 1250 struct qeth_card *card; 1251 int rc = 0; 1252 1253 card = (struct qeth_card *) ptr; 1254 QETH_CARD_TEXT(card, 2, "recover1"); 1255 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1256 return 0; 1257 QETH_CARD_TEXT(card, 2, "recover2"); 1258 dev_warn(&card->gdev->dev, 1259 "A recovery process has been started for the device\n"); 1260 qeth_set_recovery_task(card); 1261 __qeth_l2_set_offline(card->gdev, 1); 1262 rc = __qeth_l2_set_online(card->gdev, 1); 1263 if (!rc) 1264 dev_info(&card->gdev->dev, 1265 "Device successfully recovered!\n"); 1266 else { 1267 qeth_close_dev(card); 1268 dev_warn(&card->gdev->dev, "The qeth device driver " 1269 "failed to recover an error on the device\n"); 1270 } 1271 qeth_clear_recovery_task(card); 1272 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1273 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1274 return 0; 1275 } 1276 1277 static int __init qeth_l2_init(void) 1278 { 1279 pr_info("register layer 2 discipline\n"); 1280 return 0; 1281 } 1282 1283 static void __exit qeth_l2_exit(void) 1284 { 1285 pr_info("unregister layer 2 discipline\n"); 1286 } 1287 1288 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1289 { 1290 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1291 1292 if (card->dev) 1293 netif_device_detach(card->dev); 1294 qeth_set_allowed_threads(card, 0, 1); 1295 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1296 if (gdev->state == CCWGROUP_OFFLINE) 1297 return 0; 1298 if (card->state == CARD_STATE_UP) { 1299 if (card->info.hwtrap) 1300 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1301 __qeth_l2_set_offline(card->gdev, 1); 1302 } else 1303 __qeth_l2_set_offline(card->gdev, 0); 1304 return 0; 1305 } 1306 1307 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1308 { 1309 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1310 int rc = 0; 1311 1312 if (gdev->state == CCWGROUP_OFFLINE) 1313 goto out; 1314 1315 if (card->state == CARD_STATE_RECOVER) { 1316 rc = __qeth_l2_set_online(card->gdev, 1); 1317 if (rc) { 1318 rtnl_lock(); 1319 dev_close(card->dev); 1320 rtnl_unlock(); 1321 } 1322 } else 1323 rc = __qeth_l2_set_online(card->gdev, 0); 1324 out: 1325 qeth_set_allowed_threads(card, 0xffffffff, 0); 1326 if (card->dev) 1327 netif_device_attach(card->dev); 1328 if (rc) 1329 dev_warn(&card->gdev->dev, "The qeth device driver " 1330 "failed to recover an error on the device\n"); 1331 return rc; 1332 } 1333 1334 /* Returns zero if the command is successfully "consumed" */ 1335 static int qeth_l2_control_event(struct qeth_card *card, 1336 struct qeth_ipa_cmd *cmd) 1337 { 1338 switch (cmd->hdr.command) { 1339 case IPA_CMD_SETBRIDGEPORT_OSA: 1340 case IPA_CMD_SETBRIDGEPORT_IQD: 1341 if (cmd->data.sbp.hdr.command_code == 1342 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1343 qeth_bridge_state_change(card, cmd); 1344 return 0; 1345 } else 1346 return 1; 1347 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1348 qeth_bridge_host_event(card, cmd); 1349 return 0; 1350 default: 1351 return 1; 1352 } 1353 } 1354 1355 struct qeth_discipline qeth_l2_discipline = { 1356 .devtype = &qeth_l2_devtype, 1357 .start_poll = qeth_qdio_start_poll, 1358 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1359 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1360 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1361 .recover = qeth_l2_recover, 1362 .setup = qeth_l2_probe_device, 1363 .remove = qeth_l2_remove_device, 1364 .set_online = qeth_l2_set_online, 1365 .set_offline = qeth_l2_set_offline, 1366 .freeze = qeth_l2_pm_suspend, 1367 .thaw = qeth_l2_pm_resume, 1368 .restore = qeth_l2_pm_resume, 1369 .do_ioctl = NULL, 1370 .control_event_handler = qeth_l2_control_event, 1371 }; 1372 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1373 1374 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1375 struct qeth_cmd_buffer *iob) 1376 { 1377 unsigned long flags; 1378 int rc = 0; 1379 1380 QETH_CARD_TEXT(card, 5, "osndctrd"); 1381 1382 wait_event(card->wait_q, 1383 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1384 qeth_prepare_control_data(card, len, iob); 1385 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1386 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1387 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1388 (addr_t) iob, 0, 0); 1389 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1390 if (rc) { 1391 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1392 "ccw_device_start rc = %i\n", rc); 1393 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1394 qeth_release_buffer(iob->channel, iob); 1395 atomic_set(&card->write.irq_pending, 0); 1396 wake_up(&card->wait_q); 1397 } 1398 return rc; 1399 } 1400 1401 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1402 struct qeth_cmd_buffer *iob, int data_len) 1403 { 1404 u16 s1, s2; 1405 1406 QETH_CARD_TEXT(card, 4, "osndipa"); 1407 1408 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1409 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1410 s2 = (u16)data_len; 1411 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1412 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1413 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1414 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1415 return qeth_osn_send_control_data(card, s1, iob); 1416 } 1417 1418 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1419 { 1420 struct qeth_cmd_buffer *iob; 1421 struct qeth_card *card; 1422 int rc; 1423 1424 if (!dev) 1425 return -ENODEV; 1426 card = dev->ml_priv; 1427 if (!card) 1428 return -ENODEV; 1429 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1430 if (!qeth_card_hw_is_reachable(card)) 1431 return -ENODEV; 1432 iob = qeth_wait_for_buffer(&card->write); 1433 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1434 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1435 return rc; 1436 } 1437 EXPORT_SYMBOL(qeth_osn_assist); 1438 1439 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1440 int (*assist_cb)(struct net_device *, void *), 1441 int (*data_cb)(struct sk_buff *)) 1442 { 1443 struct qeth_card *card; 1444 1445 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1446 if (*dev == NULL) 1447 return -ENODEV; 1448 card = (*dev)->ml_priv; 1449 if (!card) 1450 return -ENODEV; 1451 QETH_CARD_TEXT(card, 2, "osnreg"); 1452 if ((assist_cb == NULL) || (data_cb == NULL)) 1453 return -EINVAL; 1454 card->osn_info.assist_cb = assist_cb; 1455 card->osn_info.data_cb = data_cb; 1456 return 0; 1457 } 1458 EXPORT_SYMBOL(qeth_osn_register); 1459 1460 void qeth_osn_deregister(struct net_device *dev) 1461 { 1462 struct qeth_card *card; 1463 1464 if (!dev) 1465 return; 1466 card = dev->ml_priv; 1467 if (!card) 1468 return; 1469 QETH_CARD_TEXT(card, 2, "osndereg"); 1470 card->osn_info.assist_cb = NULL; 1471 card->osn_info.data_cb = NULL; 1472 return; 1473 } 1474 EXPORT_SYMBOL(qeth_osn_deregister); 1475 1476 /* SETBRIDGEPORT support, async notifications */ 1477 1478 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1479 1480 /** 1481 * qeth_bridge_emit_host_event() - bridgeport address change notification 1482 * @card: qeth_card structure pointer, for udev events. 1483 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1484 * and reset token and addr_lnid are unused and may be NULL. 1485 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1486 * object, 0 - addition of an object. 1487 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1488 * @token: "network token" structure identifying physical address of the port. 1489 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1490 * 1491 * This function is called when registrations and deregistrations are 1492 * reported by the hardware, and also when notifications are enabled - 1493 * for all currently registered addresses. 1494 */ 1495 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1496 enum qeth_an_event_type evtype, 1497 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1498 { 1499 char str[7][32]; 1500 char *env[8]; 1501 int i = 0; 1502 1503 switch (evtype) { 1504 case anev_reg_unreg: 1505 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1506 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1507 ? "deregister" : "register"); 1508 env[i] = str[i]; i++; 1509 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1510 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1511 addr_lnid->lnid); 1512 env[i] = str[i]; i++; 1513 } 1514 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1515 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1516 addr_lnid->mac); 1517 env[i] = str[i]; i++; 1518 } 1519 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1520 token->cssid, token->ssid, token->devnum); 1521 env[i] = str[i]; i++; 1522 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1523 env[i] = str[i]; i++; 1524 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1525 token->chpid); 1526 env[i] = str[i]; i++; 1527 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1528 env[i] = str[i]; i++; 1529 break; 1530 case anev_abort: 1531 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1532 env[i] = str[i]; i++; 1533 break; 1534 case anev_reset: 1535 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1536 env[i] = str[i]; i++; 1537 break; 1538 } 1539 env[i] = NULL; 1540 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1541 } 1542 1543 struct qeth_bridge_state_data { 1544 struct work_struct worker; 1545 struct qeth_card *card; 1546 struct qeth_sbp_state_change qports; 1547 }; 1548 1549 static void qeth_bridge_state_change_worker(struct work_struct *work) 1550 { 1551 struct qeth_bridge_state_data *data = 1552 container_of(work, struct qeth_bridge_state_data, worker); 1553 /* We are only interested in the first entry - local port */ 1554 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1555 char env_locrem[32]; 1556 char env_role[32]; 1557 char env_state[32]; 1558 char *env[] = { 1559 env_locrem, 1560 env_role, 1561 env_state, 1562 NULL 1563 }; 1564 1565 /* Role should not change by itself, but if it did, */ 1566 /* information from the hardware is authoritative. */ 1567 mutex_lock(&data->card->conf_mutex); 1568 data->card->options.sbp.role = entry->role; 1569 mutex_unlock(&data->card->conf_mutex); 1570 1571 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1572 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1573 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1574 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1575 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1576 "<INVALID>"); 1577 snprintf(env_state, sizeof(env_state), "STATE=%s", 1578 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1579 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1580 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1581 "<INVALID>"); 1582 kobject_uevent_env(&data->card->gdev->dev.kobj, 1583 KOBJ_CHANGE, env); 1584 kfree(data); 1585 } 1586 1587 static void qeth_bridge_state_change(struct qeth_card *card, 1588 struct qeth_ipa_cmd *cmd) 1589 { 1590 struct qeth_sbp_state_change *qports = 1591 &cmd->data.sbp.data.state_change; 1592 struct qeth_bridge_state_data *data; 1593 int extrasize; 1594 1595 QETH_CARD_TEXT(card, 2, "brstchng"); 1596 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1597 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1598 return; 1599 } 1600 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1601 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1602 GFP_ATOMIC); 1603 if (!data) { 1604 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1605 return; 1606 } 1607 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1608 data->card = card; 1609 memcpy(&data->qports, qports, 1610 sizeof(struct qeth_sbp_state_change) + extrasize); 1611 queue_work(qeth_wq, &data->worker); 1612 } 1613 1614 struct qeth_bridge_host_data { 1615 struct work_struct worker; 1616 struct qeth_card *card; 1617 struct qeth_ipacmd_addr_change hostevs; 1618 }; 1619 1620 static void qeth_bridge_host_event_worker(struct work_struct *work) 1621 { 1622 struct qeth_bridge_host_data *data = 1623 container_of(work, struct qeth_bridge_host_data, worker); 1624 int i; 1625 1626 if (data->hostevs.lost_event_mask) { 1627 dev_info(&data->card->gdev->dev, 1628 "Address notification from the Bridge Port stopped %s (%s)\n", 1629 data->card->dev->name, 1630 (data->hostevs.lost_event_mask == 0x01) 1631 ? "Overflow" 1632 : (data->hostevs.lost_event_mask == 0x02) 1633 ? "Bridge port state change" 1634 : "Unknown reason"); 1635 mutex_lock(&data->card->conf_mutex); 1636 data->card->options.sbp.hostnotification = 0; 1637 mutex_unlock(&data->card->conf_mutex); 1638 qeth_bridge_emit_host_event(data->card, anev_abort, 1639 0, NULL, NULL); 1640 } else 1641 for (i = 0; i < data->hostevs.num_entries; i++) { 1642 struct qeth_ipacmd_addr_change_entry *entry = 1643 &data->hostevs.entry[i]; 1644 qeth_bridge_emit_host_event(data->card, 1645 anev_reg_unreg, 1646 entry->change_code, 1647 &entry->token, &entry->addr_lnid); 1648 } 1649 kfree(data); 1650 } 1651 1652 static void qeth_bridge_host_event(struct qeth_card *card, 1653 struct qeth_ipa_cmd *cmd) 1654 { 1655 struct qeth_ipacmd_addr_change *hostevs = 1656 &cmd->data.addrchange; 1657 struct qeth_bridge_host_data *data; 1658 int extrasize; 1659 1660 QETH_CARD_TEXT(card, 2, "brhostev"); 1661 if (cmd->hdr.return_code != 0x0000) { 1662 if (cmd->hdr.return_code == 0x0010) { 1663 if (hostevs->lost_event_mask == 0x00) 1664 hostevs->lost_event_mask = 0xff; 1665 } else { 1666 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1667 cmd->hdr.return_code); 1668 return; 1669 } 1670 } 1671 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1672 hostevs->num_entries; 1673 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1674 GFP_ATOMIC); 1675 if (!data) { 1676 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1677 return; 1678 } 1679 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1680 data->card = card; 1681 memcpy(&data->hostevs, hostevs, 1682 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1683 queue_work(qeth_wq, &data->worker); 1684 } 1685 1686 /* SETBRIDGEPORT support; sending commands */ 1687 1688 struct _qeth_sbp_cbctl { 1689 u16 ipa_rc; 1690 u16 cmd_rc; 1691 union { 1692 u32 supported; 1693 struct { 1694 enum qeth_sbp_roles *role; 1695 enum qeth_sbp_states *state; 1696 } qports; 1697 } data; 1698 }; 1699 1700 /** 1701 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1702 * @card: qeth_card structure pointer, for debug messages. 1703 * @cbctl: state structure with hardware return codes. 1704 * @setcmd: IPA command code 1705 * 1706 * Returns negative errno-compatible error indication or 0 on success. 1707 */ 1708 static int qeth_bridgeport_makerc(struct qeth_card *card, 1709 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1710 { 1711 int rc; 1712 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1713 1714 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1715 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1716 switch (cbctl->cmd_rc) { 1717 case IPA_RC_SUCCESS: 1718 rc = 0; 1719 break; 1720 case IPA_RC_L2_UNSUPPORTED_CMD: 1721 case IPA_RC_UNSUPPORTED_COMMAND: 1722 rc = -EOPNOTSUPP; 1723 break; 1724 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1725 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1726 rc = -ENODEV; /* maybe not the best code here? */ 1727 dev_err(&card->gdev->dev, 1728 "The device is not configured as a Bridge Port\n"); 1729 break; 1730 case IPA_RC_SBP_OSA_OS_MISMATCH: 1731 case IPA_RC_SBP_IQD_OS_MISMATCH: 1732 rc = -EPERM; 1733 dev_err(&card->gdev->dev, 1734 "A Bridge Port is already configured by a different operating system\n"); 1735 break; 1736 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1737 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1738 switch (setcmd) { 1739 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1740 rc = -EEXIST; 1741 dev_err(&card->gdev->dev, 1742 "The LAN already has a primary Bridge Port\n"); 1743 break; 1744 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1745 rc = -EBUSY; 1746 dev_err(&card->gdev->dev, 1747 "The device is already a primary Bridge Port\n"); 1748 break; 1749 default: 1750 rc = -EIO; 1751 } 1752 break; 1753 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1754 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1755 rc = -EBUSY; 1756 dev_err(&card->gdev->dev, 1757 "The device is already a secondary Bridge Port\n"); 1758 break; 1759 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1760 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1761 rc = -EEXIST; 1762 dev_err(&card->gdev->dev, 1763 "The LAN cannot have more secondary Bridge Ports\n"); 1764 break; 1765 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1766 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1767 rc = -EBUSY; 1768 dev_err(&card->gdev->dev, 1769 "The device is already a primary Bridge Port\n"); 1770 break; 1771 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1772 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1773 rc = -EACCES; 1774 dev_err(&card->gdev->dev, 1775 "The device is not authorized to be a Bridge Port\n"); 1776 break; 1777 default: 1778 rc = -EIO; 1779 } 1780 else 1781 switch (cbctl->ipa_rc) { 1782 case IPA_RC_NOTSUPP: 1783 rc = -EOPNOTSUPP; 1784 break; 1785 case IPA_RC_UNSUPPORTED_COMMAND: 1786 rc = -EOPNOTSUPP; 1787 break; 1788 default: 1789 rc = -EIO; 1790 } 1791 1792 if (rc) { 1793 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1794 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1795 } 1796 return rc; 1797 } 1798 1799 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1800 enum qeth_ipa_sbp_cmd sbp_cmd, 1801 unsigned int cmd_length) 1802 { 1803 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ? 1804 IPA_CMD_SETBRIDGEPORT_IQD : 1805 IPA_CMD_SETBRIDGEPORT_OSA; 1806 struct qeth_cmd_buffer *iob; 1807 struct qeth_ipa_cmd *cmd; 1808 1809 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0); 1810 if (!iob) 1811 return iob; 1812 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1813 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1814 cmd_length; 1815 cmd->data.sbp.hdr.command_code = sbp_cmd; 1816 cmd->data.sbp.hdr.used_total = 1; 1817 cmd->data.sbp.hdr.seq_no = 1; 1818 return iob; 1819 } 1820 1821 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1822 struct qeth_reply *reply, unsigned long data) 1823 { 1824 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1825 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1826 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1827 cbctl->ipa_rc = cmd->hdr.return_code; 1828 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1829 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1830 cbctl->data.supported = 1831 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1832 } else { 1833 cbctl->data.supported = 0; 1834 } 1835 return 0; 1836 } 1837 1838 /** 1839 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1840 * @card: qeth_card structure pointer. 1841 * 1842 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1843 * strucutre: card->options.sbp.supported_funcs. 1844 */ 1845 static void qeth_bridgeport_query_support(struct qeth_card *card) 1846 { 1847 struct qeth_cmd_buffer *iob; 1848 struct _qeth_sbp_cbctl cbctl; 1849 1850 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1851 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1852 sizeof(struct qeth_sbp_query_cmds_supp)); 1853 if (!iob) 1854 return; 1855 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1856 (void *)&cbctl) || 1857 qeth_bridgeport_makerc(card, &cbctl, 1858 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1859 /* non-zero makerc signifies failure, and produce messages */ 1860 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1861 return; 1862 } 1863 card->options.sbp.supported_funcs = cbctl.data.supported; 1864 } 1865 1866 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1867 struct qeth_reply *reply, unsigned long data) 1868 { 1869 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1870 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1871 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1872 1873 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1874 cbctl->ipa_rc = cmd->hdr.return_code; 1875 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1876 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1877 return 0; 1878 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1879 cbctl->cmd_rc = 0xffff; 1880 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1881 return 0; 1882 } 1883 /* first entry contains the state of the local port */ 1884 if (qports->num_entries > 0) { 1885 if (cbctl->data.qports.role) 1886 *cbctl->data.qports.role = qports->entry[0].role; 1887 if (cbctl->data.qports.state) 1888 *cbctl->data.qports.state = qports->entry[0].state; 1889 } 1890 return 0; 1891 } 1892 1893 /** 1894 * qeth_bridgeport_query_ports() - query local bridgeport status. 1895 * @card: qeth_card structure pointer. 1896 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1897 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1898 * 1899 * Returns negative errno-compatible error indication or 0 on success. 1900 * 1901 * 'role' and 'state' are not updated in case of hardware operation failure. 1902 */ 1903 int qeth_bridgeport_query_ports(struct qeth_card *card, 1904 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1905 { 1906 int rc = 0; 1907 struct qeth_cmd_buffer *iob; 1908 struct _qeth_sbp_cbctl cbctl = { 1909 .data = { 1910 .qports = { 1911 .role = role, 1912 .state = state, 1913 }, 1914 }, 1915 }; 1916 1917 QETH_CARD_TEXT(card, 2, "brqports"); 1918 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1919 return -EOPNOTSUPP; 1920 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1921 if (!iob) 1922 return -ENOMEM; 1923 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1924 (void *)&cbctl); 1925 if (rc < 0) 1926 return rc; 1927 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1928 } 1929 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1930 1931 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1932 struct qeth_reply *reply, unsigned long data) 1933 { 1934 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1935 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1936 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1937 cbctl->ipa_rc = cmd->hdr.return_code; 1938 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1939 return 0; 1940 } 1941 1942 /** 1943 * qeth_bridgeport_setrole() - Assign primary role to the port. 1944 * @card: qeth_card structure pointer. 1945 * @role: Role to assign. 1946 * 1947 * Returns negative errno-compatible error indication or 0 on success. 1948 */ 1949 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1950 { 1951 int rc = 0; 1952 int cmdlength; 1953 struct qeth_cmd_buffer *iob; 1954 struct _qeth_sbp_cbctl cbctl; 1955 enum qeth_ipa_sbp_cmd setcmd; 1956 1957 QETH_CARD_TEXT(card, 2, "brsetrol"); 1958 switch (role) { 1959 case QETH_SBP_ROLE_NONE: 1960 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1961 cmdlength = sizeof(struct qeth_sbp_reset_role); 1962 break; 1963 case QETH_SBP_ROLE_PRIMARY: 1964 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1965 cmdlength = sizeof(struct qeth_sbp_set_primary); 1966 break; 1967 case QETH_SBP_ROLE_SECONDARY: 1968 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1969 cmdlength = sizeof(struct qeth_sbp_set_secondary); 1970 break; 1971 default: 1972 return -EINVAL; 1973 } 1974 if (!(card->options.sbp.supported_funcs & setcmd)) 1975 return -EOPNOTSUPP; 1976 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1977 if (!iob) 1978 return -ENOMEM; 1979 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 1980 (void *)&cbctl); 1981 if (rc < 0) 1982 return rc; 1983 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 1984 } 1985 1986 /** 1987 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1988 * @card: qeth_card structure pointer, for debug messages. 1989 * 1990 * Returns negative errno-compatible error indication or 0 on success. 1991 */ 1992 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1993 { 1994 int rc; 1995 1996 if (pnso_rc == 0) 1997 switch (response) { 1998 case 0x0001: 1999 rc = 0; 2000 break; 2001 case 0x0004: 2002 case 0x0100: 2003 case 0x0106: 2004 rc = -EOPNOTSUPP; 2005 dev_err(&card->gdev->dev, 2006 "Setting address notification failed\n"); 2007 break; 2008 case 0x0107: 2009 rc = -EAGAIN; 2010 break; 2011 default: 2012 rc = -EIO; 2013 } 2014 else 2015 rc = -EIO; 2016 2017 if (rc) { 2018 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 2019 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 2020 } 2021 return rc; 2022 } 2023 2024 static void qeth_bridgeport_an_set_cb(void *priv, 2025 enum qdio_brinfo_entry_type type, void *entry) 2026 { 2027 struct qeth_card *card = (struct qeth_card *)priv; 2028 struct qdio_brinfo_entry_l2 *l2entry; 2029 u8 code; 2030 2031 if (type != l2_addr_lnid) { 2032 WARN_ON_ONCE(1); 2033 return; 2034 } 2035 2036 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 2037 code = IPA_ADDR_CHANGE_CODE_MACADDR; 2038 if (l2entry->addr_lnid.lnid) 2039 code |= IPA_ADDR_CHANGE_CODE_VLANID; 2040 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 2041 (struct net_if_token *)&l2entry->nit, 2042 (struct mac_addr_lnid *)&l2entry->addr_lnid); 2043 } 2044 2045 /** 2046 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 2047 * @card: qeth_card structure pointer. 2048 * @enable: 0 - disable, non-zero - enable notifications 2049 * 2050 * Returns negative errno-compatible error indication or 0 on success. 2051 * 2052 * On enable, emits a series of address notifications udev events for all 2053 * currently registered hosts. 2054 */ 2055 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2056 { 2057 int rc; 2058 u16 response; 2059 struct ccw_device *ddev; 2060 struct subchannel_id schid; 2061 2062 if (!card) 2063 return -EINVAL; 2064 if (!card->options.sbp.supported_funcs) 2065 return -EOPNOTSUPP; 2066 ddev = CARD_DDEV(card); 2067 ccw_device_get_schid(ddev, &schid); 2068 2069 if (enable) { 2070 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2071 rc = qdio_pnso_brinfo(schid, 1, &response, 2072 qeth_bridgeport_an_set_cb, card); 2073 } else 2074 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2075 return qeth_anset_makerc(card, rc, response); 2076 } 2077 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2078 2079 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 2080 { 2081 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 2082 card->options.sbp.hostnotification); 2083 } 2084 2085 /* VNIC Characteristics support */ 2086 2087 /* handle VNICC IPA command return codes; convert to error codes */ 2088 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc) 2089 { 2090 int rc; 2091 2092 switch (ipa_rc) { 2093 case IPA_RC_SUCCESS: 2094 return ipa_rc; 2095 case IPA_RC_L2_UNSUPPORTED_CMD: 2096 case IPA_RC_NOTSUPP: 2097 rc = -EOPNOTSUPP; 2098 break; 2099 case IPA_RC_VNICC_OOSEQ: 2100 rc = -EALREADY; 2101 break; 2102 case IPA_RC_VNICC_VNICBP: 2103 rc = -EBUSY; 2104 break; 2105 case IPA_RC_L2_ADDR_TABLE_FULL: 2106 rc = -ENOSPC; 2107 break; 2108 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 2109 rc = -EACCES; 2110 break; 2111 default: 2112 rc = -EIO; 2113 } 2114 2115 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 2116 return rc; 2117 } 2118 2119 /* generic VNICC request call back control */ 2120 struct _qeth_l2_vnicc_request_cbctl { 2121 u32 sub_cmd; 2122 struct { 2123 u32 vnic_char; 2124 u32 timeout; 2125 } param; 2126 struct { 2127 union{ 2128 u32 *sup_cmds; 2129 u32 *timeout; 2130 }; 2131 } result; 2132 }; 2133 2134 /* generic VNICC request call back */ 2135 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 2136 struct qeth_reply *reply, 2137 unsigned long data) 2138 { 2139 struct _qeth_l2_vnicc_request_cbctl *cbctl = 2140 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 2141 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2142 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 2143 2144 QETH_CARD_TEXT(card, 2, "vniccrcb"); 2145 if (cmd->hdr.return_code) 2146 return 0; 2147 /* return results to caller */ 2148 card->options.vnicc.sup_chars = rep->hdr.sup; 2149 card->options.vnicc.cur_chars = rep->hdr.cur; 2150 2151 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS) 2152 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds; 2153 2154 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT) 2155 *cbctl->result.timeout = rep->getset_timeout.timeout; 2156 2157 return 0; 2158 } 2159 2160 /* generic VNICC request */ 2161 static int qeth_l2_vnicc_request(struct qeth_card *card, 2162 struct _qeth_l2_vnicc_request_cbctl *cbctl) 2163 { 2164 struct qeth_ipacmd_vnicc *req; 2165 struct qeth_cmd_buffer *iob; 2166 struct qeth_ipa_cmd *cmd; 2167 int rc; 2168 2169 QETH_CARD_TEXT(card, 2, "vniccreq"); 2170 2171 /* get new buffer for request */ 2172 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0); 2173 if (!iob) 2174 return -ENOMEM; 2175 2176 /* create header for request */ 2177 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 2178 req = &cmd->data.vnicc; 2179 2180 /* create sub command header for request */ 2181 req->sub_hdr.data_length = sizeof(req->sub_hdr); 2182 req->sub_hdr.sub_command = cbctl->sub_cmd; 2183 2184 /* create sub command specific request fields */ 2185 switch (cbctl->sub_cmd) { 2186 case IPA_VNICC_QUERY_CHARS: 2187 break; 2188 case IPA_VNICC_QUERY_CMDS: 2189 req->sub_hdr.data_length += sizeof(req->query_cmds); 2190 req->query_cmds.vnic_char = cbctl->param.vnic_char; 2191 break; 2192 case IPA_VNICC_ENABLE: 2193 case IPA_VNICC_DISABLE: 2194 req->sub_hdr.data_length += sizeof(req->set_char); 2195 req->set_char.vnic_char = cbctl->param.vnic_char; 2196 break; 2197 case IPA_VNICC_SET_TIMEOUT: 2198 req->getset_timeout.timeout = cbctl->param.timeout; 2199 /* fallthrough */ 2200 case IPA_VNICC_GET_TIMEOUT: 2201 req->sub_hdr.data_length += sizeof(req->getset_timeout); 2202 req->getset_timeout.vnic_char = cbctl->param.vnic_char; 2203 break; 2204 default: 2205 qeth_release_buffer(iob->channel, iob); 2206 return -EOPNOTSUPP; 2207 } 2208 2209 /* send request */ 2210 rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, 2211 (void *) cbctl); 2212 2213 return qeth_l2_vnicc_makerc(card, rc); 2214 } 2215 2216 /* VNICC query VNIC characteristics request */ 2217 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 2218 { 2219 struct _qeth_l2_vnicc_request_cbctl cbctl; 2220 2221 /* prepare callback control */ 2222 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS; 2223 2224 QETH_CARD_TEXT(card, 2, "vniccqch"); 2225 return qeth_l2_vnicc_request(card, &cbctl); 2226 } 2227 2228 /* VNICC query sub commands request */ 2229 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 2230 u32 *sup_cmds) 2231 { 2232 struct _qeth_l2_vnicc_request_cbctl cbctl; 2233 2234 /* prepare callback control */ 2235 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS; 2236 cbctl.param.vnic_char = vnic_char; 2237 cbctl.result.sup_cmds = sup_cmds; 2238 2239 QETH_CARD_TEXT(card, 2, "vniccqcm"); 2240 return qeth_l2_vnicc_request(card, &cbctl); 2241 } 2242 2243 /* VNICC enable/disable characteristic request */ 2244 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 2245 u32 cmd) 2246 { 2247 struct _qeth_l2_vnicc_request_cbctl cbctl; 2248 2249 /* prepare callback control */ 2250 cbctl.sub_cmd = cmd; 2251 cbctl.param.vnic_char = vnic_char; 2252 2253 QETH_CARD_TEXT(card, 2, "vniccedc"); 2254 return qeth_l2_vnicc_request(card, &cbctl); 2255 } 2256 2257 /* VNICC get/set timeout for characteristic request */ 2258 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 2259 u32 cmd, u32 *timeout) 2260 { 2261 struct _qeth_l2_vnicc_request_cbctl cbctl; 2262 2263 /* prepare callback control */ 2264 cbctl.sub_cmd = cmd; 2265 cbctl.param.vnic_char = vnicc; 2266 if (cmd == IPA_VNICC_SET_TIMEOUT) 2267 cbctl.param.timeout = *timeout; 2268 if (cmd == IPA_VNICC_GET_TIMEOUT) 2269 cbctl.result.timeout = timeout; 2270 2271 QETH_CARD_TEXT(card, 2, "vniccgst"); 2272 return qeth_l2_vnicc_request(card, &cbctl); 2273 } 2274 2275 /* set current VNICC flag state; called from sysfs store function */ 2276 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 2277 { 2278 int rc = 0; 2279 u32 cmd; 2280 2281 QETH_CARD_TEXT(card, 2, "vniccsch"); 2282 2283 /* do not change anything if BridgePort is enabled */ 2284 if (qeth_bridgeport_is_in_use(card)) 2285 return -EBUSY; 2286 2287 /* check if characteristic and enable/disable are supported */ 2288 if (!(card->options.vnicc.sup_chars & vnicc) || 2289 !(card->options.vnicc.set_char_sup & vnicc)) 2290 return -EOPNOTSUPP; 2291 2292 /* set enable/disable command and store wanted characteristic */ 2293 if (state) { 2294 cmd = IPA_VNICC_ENABLE; 2295 card->options.vnicc.wanted_chars |= vnicc; 2296 } else { 2297 cmd = IPA_VNICC_DISABLE; 2298 card->options.vnicc.wanted_chars &= ~vnicc; 2299 } 2300 2301 /* do we need to do anything? */ 2302 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 2303 return rc; 2304 2305 /* if card is not ready, simply stop here */ 2306 if (!qeth_card_hw_is_reachable(card)) { 2307 if (state) 2308 card->options.vnicc.cur_chars |= vnicc; 2309 else 2310 card->options.vnicc.cur_chars &= ~vnicc; 2311 return rc; 2312 } 2313 2314 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 2315 if (rc) 2316 card->options.vnicc.wanted_chars = 2317 card->options.vnicc.cur_chars; 2318 else { 2319 /* successful online VNICC change; handle special cases */ 2320 if (state && vnicc == QETH_VNICC_RX_BCAST) 2321 card->options.vnicc.rx_bcast_enabled = true; 2322 if (!state && vnicc == QETH_VNICC_LEARNING) 2323 qeth_l2_vnicc_recover_timeout(card, vnicc, 2324 &card->options.vnicc.learning_timeout); 2325 } 2326 2327 return rc; 2328 } 2329 2330 /* get current VNICC flag state; called from sysfs show function */ 2331 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 2332 { 2333 int rc = 0; 2334 2335 QETH_CARD_TEXT(card, 2, "vniccgch"); 2336 2337 /* do not get anything if BridgePort is enabled */ 2338 if (qeth_bridgeport_is_in_use(card)) 2339 return -EBUSY; 2340 2341 /* check if characteristic is supported */ 2342 if (!(card->options.vnicc.sup_chars & vnicc)) 2343 return -EOPNOTSUPP; 2344 2345 /* if card is ready, query current VNICC state */ 2346 if (qeth_card_hw_is_reachable(card)) 2347 rc = qeth_l2_vnicc_query_chars(card); 2348 2349 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 2350 return rc; 2351 } 2352 2353 /* set VNICC timeout; called from sysfs store function. Currently, only learning 2354 * supports timeout 2355 */ 2356 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 2357 { 2358 int rc = 0; 2359 2360 QETH_CARD_TEXT(card, 2, "vniccsto"); 2361 2362 /* do not change anything if BridgePort is enabled */ 2363 if (qeth_bridgeport_is_in_use(card)) 2364 return -EBUSY; 2365 2366 /* check if characteristic and set_timeout are supported */ 2367 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2368 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2369 return -EOPNOTSUPP; 2370 2371 /* do we need to do anything? */ 2372 if (card->options.vnicc.learning_timeout == timeout) 2373 return rc; 2374 2375 /* if card is not ready, simply store the value internally and return */ 2376 if (!qeth_card_hw_is_reachable(card)) { 2377 card->options.vnicc.learning_timeout = timeout; 2378 return rc; 2379 } 2380 2381 /* send timeout value to card; if successful, store value internally */ 2382 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2383 IPA_VNICC_SET_TIMEOUT, &timeout); 2384 if (!rc) 2385 card->options.vnicc.learning_timeout = timeout; 2386 2387 return rc; 2388 } 2389 2390 /* get current VNICC timeout; called from sysfs show function. Currently, only 2391 * learning supports timeout 2392 */ 2393 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 2394 { 2395 int rc = 0; 2396 2397 QETH_CARD_TEXT(card, 2, "vniccgto"); 2398 2399 /* do not get anything if BridgePort is enabled */ 2400 if (qeth_bridgeport_is_in_use(card)) 2401 return -EBUSY; 2402 2403 /* check if characteristic and get_timeout are supported */ 2404 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2405 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2406 return -EOPNOTSUPP; 2407 /* if card is ready, get timeout. Otherwise, just return stored value */ 2408 *timeout = card->options.vnicc.learning_timeout; 2409 if (qeth_card_hw_is_reachable(card)) 2410 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2411 IPA_VNICC_GET_TIMEOUT, 2412 timeout); 2413 2414 return rc; 2415 } 2416 2417 /* check if VNICC is currently enabled */ 2418 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 2419 { 2420 /* if everything is turned off, VNICC is not active */ 2421 if (!card->options.vnicc.cur_chars) 2422 return false; 2423 /* default values are only OK if rx_bcast was not enabled by user 2424 * or the card is offline. 2425 */ 2426 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 2427 if (!card->options.vnicc.rx_bcast_enabled || 2428 !qeth_card_hw_is_reachable(card)) 2429 return false; 2430 } 2431 return true; 2432 } 2433 2434 /* recover user timeout setting */ 2435 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 2436 u32 *timeout) 2437 { 2438 if (card->options.vnicc.sup_chars & vnicc && 2439 card->options.vnicc.getset_timeout_sup & vnicc && 2440 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 2441 timeout)) 2442 return false; 2443 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2444 return true; 2445 } 2446 2447 /* recover user characteristic setting */ 2448 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2449 bool enable) 2450 { 2451 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2452 2453 if (card->options.vnicc.sup_chars & vnicc && 2454 card->options.vnicc.set_char_sup & vnicc && 2455 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2456 return false; 2457 card->options.vnicc.wanted_chars &= ~vnicc; 2458 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2459 return true; 2460 } 2461 2462 /* (re-)initialize VNICC */ 2463 static void qeth_l2_vnicc_init(struct qeth_card *card) 2464 { 2465 u32 *timeout = &card->options.vnicc.learning_timeout; 2466 unsigned int chars_len, i; 2467 unsigned long chars_tmp; 2468 u32 sup_cmds, vnicc; 2469 bool enable, error; 2470 2471 QETH_CARD_TEXT(card, 2, "vniccini"); 2472 /* reset rx_bcast */ 2473 card->options.vnicc.rx_bcast_enabled = 0; 2474 /* initial query and storage of VNIC characteristics */ 2475 if (qeth_l2_vnicc_query_chars(card)) { 2476 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2477 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2478 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2479 /* fail quietly if user didn't change the default config */ 2480 card->options.vnicc.sup_chars = 0; 2481 card->options.vnicc.cur_chars = 0; 2482 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2483 return; 2484 } 2485 /* get supported commands for each supported characteristic */ 2486 chars_tmp = card->options.vnicc.sup_chars; 2487 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2488 for_each_set_bit(i, &chars_tmp, chars_len) { 2489 vnicc = BIT(i); 2490 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds); 2491 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) || 2492 !(sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2493 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2494 if (!(sup_cmds & IPA_VNICC_ENABLE) || 2495 !(sup_cmds & IPA_VNICC_DISABLE)) 2496 card->options.vnicc.set_char_sup &= ~vnicc; 2497 } 2498 /* enforce assumed default values and recover settings, if changed */ 2499 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2500 timeout); 2501 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; 2502 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; 2503 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2504 for_each_set_bit(i, &chars_tmp, chars_len) { 2505 vnicc = BIT(i); 2506 enable = card->options.vnicc.wanted_chars & vnicc; 2507 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2508 } 2509 if (error) 2510 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2511 } 2512 2513 /* configure default values of VNIC characteristics */ 2514 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2515 { 2516 /* characteristics values */ 2517 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2518 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2519 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2520 /* supported commands */ 2521 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2522 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2523 /* settings wanted by users */ 2524 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2525 } 2526 2527 module_init(qeth_l2_init); 2528 module_exit(qeth_l2_exit); 2529 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2530 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2531 MODULE_LICENSE("GPL"); 2532