1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright IBM Corp. 2007, 2009 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #define KMSG_COMPONENT "qeth" 11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 12 13 #include <linux/module.h> 14 #include <linux/moduleparam.h> 15 #include <linux/string.h> 16 #include <linux/errno.h> 17 #include <linux/kernel.h> 18 #include <linux/slab.h> 19 #include <linux/etherdevice.h> 20 #include <linux/ip.h> 21 #include <linux/list.h> 22 #include <linux/hash.h> 23 #include <linux/hashtable.h> 24 #include <linux/string.h> 25 #include <asm/setup.h> 26 #include "qeth_core.h" 27 #include "qeth_l2.h" 28 29 static int qeth_l2_set_offline(struct ccwgroup_device *); 30 static int qeth_l2_stop(struct net_device *); 31 static void qeth_l2_set_rx_mode(struct net_device *); 32 static void qeth_bridgeport_query_support(struct qeth_card *card); 33 static void qeth_bridge_state_change(struct qeth_card *card, 34 struct qeth_ipa_cmd *cmd); 35 static void qeth_bridge_host_event(struct qeth_card *card, 36 struct qeth_ipa_cmd *cmd); 37 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); 38 static void qeth_l2_vnicc_init(struct qeth_card *card); 39 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 40 u32 *timeout); 41 42 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 43 { 44 struct qeth_card *card; 45 struct net_device *ndev; 46 __u16 temp_dev_no; 47 unsigned long flags; 48 struct ccw_dev_id read_devid; 49 50 ndev = NULL; 51 memcpy(&temp_dev_no, read_dev_no, 2); 52 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 53 list_for_each_entry(card, &qeth_core_card_list.list, list) { 54 ccw_device_get_id(CARD_RDEV(card), &read_devid); 55 if (read_devid.devno == temp_dev_no) { 56 ndev = card->dev; 57 break; 58 } 59 } 60 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 61 return ndev; 62 } 63 64 static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode) 65 { 66 int rc; 67 68 if (retcode) 69 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 70 switch (retcode) { 71 case IPA_RC_SUCCESS: 72 rc = 0; 73 break; 74 case IPA_RC_L2_UNSUPPORTED_CMD: 75 rc = -EOPNOTSUPP; 76 break; 77 case IPA_RC_L2_ADDR_TABLE_FULL: 78 rc = -ENOSPC; 79 break; 80 case IPA_RC_L2_DUP_MAC: 81 case IPA_RC_L2_DUP_LAYER3_MAC: 82 rc = -EEXIST; 83 break; 84 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 85 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 86 rc = -EPERM; 87 break; 88 case IPA_RC_L2_MAC_NOT_FOUND: 89 rc = -ENOENT; 90 break; 91 case -ENOMEM: 92 rc = -ENOMEM; 93 break; 94 default: 95 rc = -EIO; 96 break; 97 } 98 return rc; 99 } 100 101 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 102 enum qeth_ipa_cmds ipacmd) 103 { 104 struct qeth_ipa_cmd *cmd; 105 struct qeth_cmd_buffer *iob; 106 107 QETH_CARD_TEXT(card, 2, "L2sdmac"); 108 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 109 if (!iob) 110 return -ENOMEM; 111 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 112 cmd->data.setdelmac.mac_length = ETH_ALEN; 113 ether_addr_copy(cmd->data.setdelmac.mac, mac); 114 return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob, 115 NULL, NULL)); 116 } 117 118 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 119 { 120 int rc; 121 122 QETH_CARD_TEXT(card, 2, "L2Setmac"); 123 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 124 if (rc == 0) { 125 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 126 ether_addr_copy(card->dev->dev_addr, mac); 127 dev_info(&card->gdev->dev, 128 "MAC address %pM successfully registered on device %s\n", 129 card->dev->dev_addr, card->dev->name); 130 } else { 131 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 132 switch (rc) { 133 case -EEXIST: 134 dev_warn(&card->gdev->dev, 135 "MAC address %pM already exists\n", mac); 136 break; 137 case -EPERM: 138 dev_warn(&card->gdev->dev, 139 "MAC address %pM is not authorized\n", mac); 140 break; 141 } 142 } 143 return rc; 144 } 145 146 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 147 { 148 int rc; 149 150 QETH_CARD_TEXT(card, 2, "L2Delmac"); 151 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 152 return 0; 153 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC); 154 if (rc == 0) 155 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 156 return rc; 157 } 158 159 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) 160 { 161 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ? 162 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC; 163 int rc; 164 165 QETH_CARD_TEXT(card, 2, "L2Wmac"); 166 rc = qeth_l2_send_setdelmac(card, mac, cmd); 167 if (rc == -EEXIST) 168 QETH_DBF_MESSAGE(2, "MAC %pM already registered on %s\n", 169 mac, QETH_CARD_IFNAME(card)); 170 else if (rc) 171 QETH_DBF_MESSAGE(2, "Failed to register MAC %pM on %s: %d\n", 172 mac, QETH_CARD_IFNAME(card), rc); 173 return rc; 174 } 175 176 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) 177 { 178 enum qeth_ipa_cmds cmd = is_multicast_ether_addr_64bits(mac) ? 179 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; 180 int rc; 181 182 QETH_CARD_TEXT(card, 2, "L2Rmac"); 183 rc = qeth_l2_send_setdelmac(card, mac, cmd); 184 if (rc) 185 QETH_DBF_MESSAGE(2, "Failed to delete MAC %pM on %s: %d\n", 186 mac, QETH_CARD_IFNAME(card), rc); 187 return rc; 188 } 189 190 static void qeth_l2_del_all_macs(struct qeth_card *card) 191 { 192 struct qeth_mac *mac; 193 struct hlist_node *tmp; 194 int i; 195 196 spin_lock_bh(&card->mclock); 197 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 198 hash_del(&mac->hnode); 199 kfree(mac); 200 } 201 spin_unlock_bh(&card->mclock); 202 } 203 204 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 205 { 206 if (card->info.type == QETH_CARD_TYPE_OSN) 207 return RTN_UNSPEC; 208 if (is_broadcast_ether_addr(skb->data)) 209 return RTN_BROADCAST; 210 if (is_multicast_ether_addr(skb->data)) 211 return RTN_MULTICAST; 212 return RTN_UNSPEC; 213 } 214 215 static void qeth_l2_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr, 216 struct sk_buff *skb) 217 { 218 struct iphdr *iph = ip_hdr(skb); 219 220 /* tcph->check contains already the pseudo hdr checksum 221 * so just set the header flags 222 */ 223 if (iph->protocol == IPPROTO_UDP) 224 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; 225 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 226 QETH_HDR_EXT_CSUM_HDR_REQ; 227 iph->check = 0; 228 if (card->options.performance_stats) 229 card->perf_stats.tx_csum++; 230 } 231 232 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb, 233 int cast_type, unsigned int data_len) 234 { 235 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 236 237 memset(hdr, 0, sizeof(struct qeth_hdr)); 238 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 239 hdr->hdr.l2.pkt_length = data_len; 240 241 /* set byte byte 3 to casting flags */ 242 if (cast_type == RTN_MULTICAST) 243 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 244 else if (cast_type == RTN_BROADCAST) 245 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 246 else 247 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 248 249 /* VSWITCH relies on the VLAN 250 * information to be present in 251 * the QDIO header */ 252 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 253 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 254 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 255 } 256 } 257 258 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode) 259 { 260 if (retcode) 261 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 262 263 switch (retcode) { 264 case IPA_RC_SUCCESS: 265 return 0; 266 case IPA_RC_L2_INVALID_VLAN_ID: 267 return -EINVAL; 268 case IPA_RC_L2_DUP_VLAN_ID: 269 return -EEXIST; 270 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 271 return -ENOENT; 272 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 273 return -EPERM; 274 case -ENOMEM: 275 return -ENOMEM; 276 default: 277 return -EIO; 278 } 279 } 280 281 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 282 struct qeth_reply *reply, 283 unsigned long data) 284 { 285 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 286 287 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 288 if (cmd->hdr.return_code) { 289 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n", 290 cmd->data.setdelvlan.vlan_id, 291 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 292 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 293 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 294 } 295 return 0; 296 } 297 298 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 299 enum qeth_ipa_cmds ipacmd) 300 { 301 struct qeth_ipa_cmd *cmd; 302 struct qeth_cmd_buffer *iob; 303 304 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 305 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 306 if (!iob) 307 return -ENOMEM; 308 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 309 cmd->data.setdelvlan.vlan_id = i; 310 return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob, 311 qeth_l2_send_setdelvlan_cb, NULL)); 312 } 313 314 static void qeth_l2_process_vlans(struct qeth_card *card) 315 { 316 struct qeth_vlan_vid *id; 317 QETH_CARD_TEXT(card, 3, "L2prcvln"); 318 spin_lock_bh(&card->vlanlock); 319 list_for_each_entry(id, &card->vid_list, list) { 320 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 321 } 322 spin_unlock_bh(&card->vlanlock); 323 } 324 325 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 326 __be16 proto, u16 vid) 327 { 328 struct qeth_card *card = dev->ml_priv; 329 struct qeth_vlan_vid *id; 330 int rc; 331 332 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 333 if (!vid) 334 return 0; 335 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 336 QETH_CARD_TEXT(card, 3, "aidREC"); 337 return 0; 338 } 339 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 340 if (id) { 341 id->vid = vid; 342 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 343 if (rc) { 344 kfree(id); 345 return rc; 346 } 347 spin_lock_bh(&card->vlanlock); 348 list_add_tail(&id->list, &card->vid_list); 349 spin_unlock_bh(&card->vlanlock); 350 } else { 351 return -ENOMEM; 352 } 353 return 0; 354 } 355 356 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 357 __be16 proto, u16 vid) 358 { 359 struct qeth_vlan_vid *id, *tmpid = NULL; 360 struct qeth_card *card = dev->ml_priv; 361 int rc = 0; 362 363 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 364 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 365 QETH_CARD_TEXT(card, 3, "kidREC"); 366 return 0; 367 } 368 spin_lock_bh(&card->vlanlock); 369 list_for_each_entry(id, &card->vid_list, list) { 370 if (id->vid == vid) { 371 list_del(&id->list); 372 tmpid = id; 373 break; 374 } 375 } 376 spin_unlock_bh(&card->vlanlock); 377 if (tmpid) { 378 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 379 kfree(tmpid); 380 } 381 qeth_l2_set_rx_mode(card->dev); 382 return rc; 383 } 384 385 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 386 { 387 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 388 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 389 390 qeth_set_allowed_threads(card, 0, 1); 391 if (card->read.state == CH_STATE_UP && 392 card->write.state == CH_STATE_UP && 393 (card->state == CARD_STATE_UP)) { 394 if (recovery_mode && 395 card->info.type != QETH_CARD_TYPE_OSN) { 396 qeth_l2_stop(card->dev); 397 } else { 398 rtnl_lock(); 399 dev_close(card->dev); 400 rtnl_unlock(); 401 } 402 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 403 card->state = CARD_STATE_SOFTSETUP; 404 } 405 if (card->state == CARD_STATE_SOFTSETUP) { 406 qeth_l2_del_all_macs(card); 407 qeth_clear_ipacmd_list(card); 408 card->state = CARD_STATE_HARDSETUP; 409 } 410 if (card->state == CARD_STATE_HARDSETUP) { 411 qeth_qdio_clear_card(card, 0); 412 qeth_clear_qdio_buffers(card); 413 qeth_clear_working_pool_list(card); 414 card->state = CARD_STATE_DOWN; 415 } 416 if (card->state == CARD_STATE_DOWN) { 417 qeth_clear_cmd_buffers(&card->read); 418 qeth_clear_cmd_buffers(&card->write); 419 } 420 } 421 422 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 423 int budget, int *done) 424 { 425 int work_done = 0; 426 struct sk_buff *skb; 427 struct qeth_hdr *hdr; 428 unsigned int len; 429 430 *done = 0; 431 WARN_ON_ONCE(!budget); 432 while (budget) { 433 skb = qeth_core_get_next_skb(card, 434 &card->qdio.in_q->bufs[card->rx.b_index], 435 &card->rx.b_element, &card->rx.e_offset, &hdr); 436 if (!skb) { 437 *done = 1; 438 break; 439 } 440 skb->dev = card->dev; 441 switch (hdr->hdr.l2.id) { 442 case QETH_HEADER_TYPE_LAYER2: 443 skb->pkt_type = PACKET_HOST; 444 skb->protocol = eth_type_trans(skb, skb->dev); 445 if ((card->dev->features & NETIF_F_RXCSUM) 446 && ((hdr->hdr.l2.flags[1] & 447 (QETH_HDR_EXT_CSUM_HDR_REQ | 448 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 449 (QETH_HDR_EXT_CSUM_HDR_REQ | 450 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 451 skb->ip_summed = CHECKSUM_UNNECESSARY; 452 else 453 skb->ip_summed = CHECKSUM_NONE; 454 if (skb->protocol == htons(ETH_P_802_2)) 455 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 456 len = skb->len; 457 napi_gro_receive(&card->napi, skb); 458 break; 459 case QETH_HEADER_TYPE_OSN: 460 if (card->info.type == QETH_CARD_TYPE_OSN) { 461 skb_push(skb, sizeof(struct qeth_hdr)); 462 skb_copy_to_linear_data(skb, hdr, 463 sizeof(struct qeth_hdr)); 464 len = skb->len; 465 card->osn_info.data_cb(skb); 466 break; 467 } 468 /* else unknown */ 469 default: 470 dev_kfree_skb_any(skb); 471 QETH_CARD_TEXT(card, 3, "inbunkno"); 472 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 473 continue; 474 } 475 work_done++; 476 budget--; 477 card->stats.rx_packets++; 478 card->stats.rx_bytes += len; 479 } 480 return work_done; 481 } 482 483 static int qeth_l2_request_initial_mac(struct qeth_card *card) 484 { 485 int rc = 0; 486 char vendor_pre[] = {0x02, 0x00, 0x00}; 487 488 QETH_DBF_TEXT(SETUP, 2, "l2reqmac"); 489 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 490 491 if (MACHINE_IS_VM) { 492 rc = qeth_vm_request_mac(card); 493 if (!rc) 494 goto out; 495 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n", 496 CARD_BUS_ID(card), rc); 497 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc); 498 /* fall back to alternative mechanism: */ 499 } 500 501 if (card->info.type == QETH_CARD_TYPE_IQD || 502 card->info.type == QETH_CARD_TYPE_OSM || 503 card->info.type == QETH_CARD_TYPE_OSX || 504 card->info.guestlan) { 505 rc = qeth_setadpparms_change_macaddr(card); 506 if (rc) { 507 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 508 "device %s: x%x\n", CARD_BUS_ID(card), rc); 509 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 510 return rc; 511 } 512 } else { 513 eth_random_addr(card->dev->dev_addr); 514 memcpy(card->dev->dev_addr, vendor_pre, 3); 515 } 516 out: 517 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len); 518 return 0; 519 } 520 521 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 522 { 523 struct sockaddr *addr = p; 524 struct qeth_card *card = dev->ml_priv; 525 int rc = 0; 526 527 QETH_CARD_TEXT(card, 3, "setmac"); 528 529 if (card->info.type == QETH_CARD_TYPE_OSN || 530 card->info.type == QETH_CARD_TYPE_OSM || 531 card->info.type == QETH_CARD_TYPE_OSX) { 532 QETH_CARD_TEXT(card, 3, "setmcTYP"); 533 return -EOPNOTSUPP; 534 } 535 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 536 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 537 QETH_CARD_TEXT(card, 3, "setmcREC"); 538 return -ERESTARTSYS; 539 } 540 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 541 if (!rc || (rc == -ENOENT)) 542 rc = qeth_l2_send_setmac(card, addr->sa_data); 543 return rc ? -EINVAL : 0; 544 } 545 546 static void qeth_promisc_to_bridge(struct qeth_card *card) 547 { 548 struct net_device *dev = card->dev; 549 enum qeth_ipa_promisc_modes promisc_mode; 550 int role; 551 int rc; 552 553 QETH_CARD_TEXT(card, 3, "pmisc2br"); 554 555 if (!card->options.sbp.reflect_promisc) 556 return; 557 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 558 : SET_PROMISC_MODE_OFF; 559 if (promisc_mode == card->info.promisc_mode) 560 return; 561 562 if (promisc_mode == SET_PROMISC_MODE_ON) { 563 if (card->options.sbp.reflect_promisc_primary) 564 role = QETH_SBP_ROLE_PRIMARY; 565 else 566 role = QETH_SBP_ROLE_SECONDARY; 567 } else 568 role = QETH_SBP_ROLE_NONE; 569 570 rc = qeth_bridgeport_setrole(card, role); 571 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 572 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 573 if (!rc) { 574 card->options.sbp.role = role; 575 card->info.promisc_mode = promisc_mode; 576 } 577 578 } 579 /* New MAC address is added to the hash table and marked to be written on card 580 * only if there is not in the hash table storage already 581 * 582 */ 583 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 584 { 585 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 586 struct qeth_mac *mac; 587 588 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 589 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 590 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 591 return; 592 } 593 } 594 595 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 596 if (!mac) 597 return; 598 599 ether_addr_copy(mac->mac_addr, ha->addr); 600 mac->disp_flag = QETH_DISP_ADDR_ADD; 601 602 hash_add(card->mac_htable, &mac->hnode, mac_hash); 603 } 604 605 static void qeth_l2_set_rx_mode(struct net_device *dev) 606 { 607 struct qeth_card *card = dev->ml_priv; 608 struct netdev_hw_addr *ha; 609 struct qeth_mac *mac; 610 struct hlist_node *tmp; 611 int i; 612 int rc; 613 614 if (card->info.type == QETH_CARD_TYPE_OSN) 615 return; 616 617 QETH_CARD_TEXT(card, 3, "setmulti"); 618 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 619 (card->state != CARD_STATE_UP)) 620 return; 621 622 spin_lock_bh(&card->mclock); 623 624 netdev_for_each_mc_addr(ha, dev) 625 qeth_l2_add_mac(card, ha); 626 netdev_for_each_uc_addr(ha, dev) 627 qeth_l2_add_mac(card, ha); 628 629 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 630 switch (mac->disp_flag) { 631 case QETH_DISP_ADDR_DELETE: 632 qeth_l2_remove_mac(card, mac->mac_addr); 633 hash_del(&mac->hnode); 634 kfree(mac); 635 break; 636 case QETH_DISP_ADDR_ADD: 637 rc = qeth_l2_write_mac(card, mac->mac_addr); 638 if (rc) { 639 hash_del(&mac->hnode); 640 kfree(mac); 641 break; 642 } 643 /* fall through */ 644 default: 645 /* for next call to set_rx_mode(): */ 646 mac->disp_flag = QETH_DISP_ADDR_DELETE; 647 } 648 } 649 650 spin_unlock_bh(&card->mclock); 651 652 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 653 qeth_setadp_promisc_mode(card); 654 else 655 qeth_promisc_to_bridge(card); 656 } 657 658 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb, 659 struct qeth_qdio_out_q *queue, int cast_type) 660 { 661 unsigned int data_offset = ETH_HLEN; 662 struct qeth_hdr *hdr; 663 int rc; 664 665 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 666 if (!hdr) 667 return -ENOMEM; 668 qeth_l2_fill_header(hdr, skb, cast_type, skb->len); 669 skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr), 670 data_offset); 671 672 if (!qeth_get_elements_no(card, skb, 1, data_offset)) { 673 rc = -E2BIG; 674 goto out; 675 } 676 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, 677 sizeof(*hdr) + data_offset); 678 out: 679 if (rc) 680 kmem_cache_free(qeth_core_header_cache, hdr); 681 return rc; 682 } 683 684 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb, 685 struct qeth_qdio_out_q *queue, int cast_type) 686 { 687 int push_len = sizeof(struct qeth_hdr); 688 unsigned int elements, nr_frags; 689 unsigned int hdr_elements = 0; 690 struct qeth_hdr *hdr = NULL; 691 unsigned int hd_len = 0; 692 int rc; 693 694 /* fix hardware limitation: as long as we do not have sbal 695 * chaining we can not send long frag lists 696 */ 697 if (!qeth_get_elements_no(card, skb, 0, 0)) { 698 rc = skb_linearize(skb); 699 700 if (card->options.performance_stats) { 701 if (rc) 702 card->perf_stats.tx_linfail++; 703 else 704 card->perf_stats.tx_lin++; 705 } 706 if (rc) 707 return rc; 708 } 709 nr_frags = skb_shinfo(skb)->nr_frags; 710 711 rc = skb_cow_head(skb, push_len); 712 if (rc) 713 return rc; 714 push_len = qeth_push_hdr(skb, &hdr, push_len); 715 if (push_len < 0) 716 return push_len; 717 if (!push_len) { 718 /* hdr was allocated from cache */ 719 hd_len = sizeof(*hdr); 720 hdr_elements = 1; 721 } 722 qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len); 723 if (skb->ip_summed == CHECKSUM_PARTIAL) 724 qeth_l2_hdr_csum(card, hdr, skb); 725 726 elements = qeth_get_elements_no(card, skb, hdr_elements, 0); 727 if (!elements) { 728 rc = -E2BIG; 729 goto out; 730 } 731 elements += hdr_elements; 732 733 /* TODO: remove the skb_orphan() once TX completion is fast enough */ 734 skb_orphan(skb); 735 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements); 736 out: 737 if (!rc) { 738 if (card->options.performance_stats && nr_frags) { 739 card->perf_stats.sg_skbs_sent++; 740 /* nr_frags + skb->data */ 741 card->perf_stats.sg_frags_sent += nr_frags + 1; 742 } 743 } else { 744 if (hd_len) 745 kmem_cache_free(qeth_core_header_cache, hdr); 746 if (rc == -EBUSY) 747 /* roll back to ETH header */ 748 skb_pull(skb, push_len); 749 } 750 return rc; 751 } 752 753 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 754 struct qeth_qdio_out_q *queue) 755 { 756 unsigned int elements; 757 struct qeth_hdr *hdr; 758 759 if (skb->protocol == htons(ETH_P_IPV6)) 760 return -EPROTONOSUPPORT; 761 762 hdr = (struct qeth_hdr *)skb->data; 763 elements = qeth_get_elements_no(card, skb, 0, 0); 764 if (!elements) 765 return -E2BIG; 766 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr))) 767 return -EINVAL; 768 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements); 769 } 770 771 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 772 struct net_device *dev) 773 { 774 struct qeth_card *card = dev->ml_priv; 775 int cast_type = qeth_l2_get_cast_type(card, skb); 776 struct qeth_qdio_out_q *queue; 777 int tx_bytes = skb->len; 778 int rc; 779 780 if (card->qdio.do_prio_queueing || (cast_type && 781 card->info.is_multicast_different)) 782 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 783 qeth_get_ip_version(skb), cast_type)]; 784 else 785 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 786 787 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 788 card->stats.tx_carrier_errors++; 789 goto tx_drop; 790 } 791 792 if (card->options.performance_stats) { 793 card->perf_stats.outbound_cnt++; 794 card->perf_stats.outbound_start_time = qeth_get_micros(); 795 } 796 netif_stop_queue(dev); 797 798 switch (card->info.type) { 799 case QETH_CARD_TYPE_OSN: 800 rc = qeth_l2_xmit_osn(card, skb, queue); 801 break; 802 case QETH_CARD_TYPE_IQD: 803 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type); 804 break; 805 default: 806 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type); 807 } 808 809 if (!rc) { 810 card->stats.tx_packets++; 811 card->stats.tx_bytes += tx_bytes; 812 if (card->options.performance_stats) 813 card->perf_stats.outbound_time += qeth_get_micros() - 814 card->perf_stats.outbound_start_time; 815 netif_wake_queue(dev); 816 return NETDEV_TX_OK; 817 } else if (rc == -EBUSY) { 818 return NETDEV_TX_BUSY; 819 } /* else fall through */ 820 821 tx_drop: 822 card->stats.tx_dropped++; 823 card->stats.tx_errors++; 824 dev_kfree_skb_any(skb); 825 netif_wake_queue(dev); 826 return NETDEV_TX_OK; 827 } 828 829 static int __qeth_l2_open(struct net_device *dev) 830 { 831 struct qeth_card *card = dev->ml_priv; 832 int rc = 0; 833 834 QETH_CARD_TEXT(card, 4, "qethopen"); 835 if (card->state == CARD_STATE_UP) 836 return rc; 837 if (card->state != CARD_STATE_SOFTSETUP) 838 return -ENODEV; 839 840 if ((card->info.type != QETH_CARD_TYPE_OSN) && 841 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 842 QETH_CARD_TEXT(card, 4, "nomacadr"); 843 return -EPERM; 844 } 845 card->data.state = CH_STATE_UP; 846 card->state = CARD_STATE_UP; 847 netif_start_queue(dev); 848 849 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 850 napi_enable(&card->napi); 851 napi_schedule(&card->napi); 852 } else 853 rc = -EIO; 854 return rc; 855 } 856 857 static int qeth_l2_open(struct net_device *dev) 858 { 859 struct qeth_card *card = dev->ml_priv; 860 861 QETH_CARD_TEXT(card, 5, "qethope_"); 862 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 863 QETH_CARD_TEXT(card, 3, "openREC"); 864 return -ERESTARTSYS; 865 } 866 return __qeth_l2_open(dev); 867 } 868 869 static int qeth_l2_stop(struct net_device *dev) 870 { 871 struct qeth_card *card = dev->ml_priv; 872 873 QETH_CARD_TEXT(card, 4, "qethstop"); 874 netif_tx_disable(dev); 875 if (card->state == CARD_STATE_UP) { 876 card->state = CARD_STATE_SOFTSETUP; 877 napi_disable(&card->napi); 878 } 879 return 0; 880 } 881 882 static const struct device_type qeth_l2_devtype = { 883 .name = "qeth_layer2", 884 .groups = qeth_l2_attr_groups, 885 }; 886 887 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 888 { 889 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 890 int rc; 891 892 if (gdev->dev.type == &qeth_generic_devtype) { 893 rc = qeth_l2_create_device_attributes(&gdev->dev); 894 if (rc) 895 return rc; 896 } 897 INIT_LIST_HEAD(&card->vid_list); 898 hash_init(card->mac_htable); 899 card->options.layer2 = 1; 900 card->info.hwtrap = 0; 901 qeth_l2_vnicc_set_defaults(card); 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_features_check = qeth_features_check, 947 .ndo_validate_addr = eth_validate_addr, 948 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 949 .ndo_do_ioctl = qeth_do_ioctl, 950 .ndo_set_mac_address = qeth_l2_set_mac_address, 951 .ndo_change_mtu = qeth_change_mtu, 952 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 953 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 954 .ndo_tx_timeout = qeth_tx_timeout, 955 .ndo_fix_features = qeth_fix_features, 956 .ndo_set_features = qeth_set_features 957 }; 958 959 static int qeth_l2_setup_netdev(struct qeth_card *card) 960 { 961 switch (card->info.type) { 962 case QETH_CARD_TYPE_IQD: 963 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 964 ether_setup); 965 break; 966 case QETH_CARD_TYPE_OSN: 967 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 968 ether_setup); 969 break; 970 default: 971 card->dev = alloc_etherdev(0); 972 } 973 974 if (!card->dev) 975 return -ENODEV; 976 977 card->dev->ml_priv = card; 978 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 979 card->dev->mtu = card->info.initial_mtu; 980 card->dev->min_mtu = 64; 981 card->dev->max_mtu = ETH_MAX_MTU; 982 card->dev->netdev_ops = &qeth_l2_netdev_ops; 983 if (card->info.type == QETH_CARD_TYPE_OSN) { 984 card->dev->ethtool_ops = &qeth_l2_osn_ops; 985 card->dev->flags |= IFF_NOARP; 986 } else { 987 card->dev->ethtool_ops = &qeth_l2_ethtool_ops; 988 } 989 990 if (card->info.type == QETH_CARD_TYPE_OSM) 991 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 992 else 993 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 994 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 995 card->dev->hw_features = NETIF_F_SG; 996 card->dev->vlan_features = NETIF_F_SG; 997 card->dev->features |= NETIF_F_SG; 998 /* OSA 3S and earlier has no RX/TX support */ 999 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 1000 card->dev->hw_features |= NETIF_F_IP_CSUM; 1001 card->dev->vlan_features |= NETIF_F_IP_CSUM; 1002 } 1003 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 1004 card->dev->hw_features |= NETIF_F_RXCSUM; 1005 card->dev->vlan_features |= NETIF_F_RXCSUM; 1006 } 1007 } 1008 if (card->info.type != QETH_CARD_TYPE_OSN && 1009 card->info.type != QETH_CARD_TYPE_IQD) { 1010 card->dev->priv_flags &= ~IFF_TX_SKB_SHARING; 1011 card->dev->needed_headroom = sizeof(struct qeth_hdr); 1012 } 1013 1014 card->info.broadcast_capable = 1; 1015 qeth_l2_request_initial_mac(card); 1016 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1017 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 1018 netif_carrier_off(card->dev); 1019 return register_netdev(card->dev); 1020 } 1021 1022 static int qeth_l2_start_ipassists(struct qeth_card *card) 1023 { 1024 /* configure isolation level */ 1025 if (qeth_set_access_ctrl_online(card, 0)) 1026 return -ENODEV; 1027 return 0; 1028 } 1029 1030 static void qeth_l2_trace_features(struct qeth_card *card) 1031 { 1032 /* Set BridgePort features */ 1033 QETH_CARD_TEXT(card, 2, "featuSBP"); 1034 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 1035 sizeof(card->options.sbp.supported_funcs)); 1036 /* VNIC Characteristics features */ 1037 QETH_CARD_TEXT(card, 2, "feaVNICC"); 1038 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 1039 sizeof(card->options.vnicc.sup_chars)); 1040 } 1041 1042 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1043 { 1044 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1045 int rc = 0; 1046 enum qeth_card_states recover_flag; 1047 1048 mutex_lock(&card->discipline_mutex); 1049 mutex_lock(&card->conf_mutex); 1050 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1051 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1052 1053 recover_flag = card->state; 1054 rc = qeth_core_hardsetup_card(card); 1055 if (rc) { 1056 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1057 rc = -ENODEV; 1058 goto out_remove; 1059 } 1060 qeth_bridgeport_query_support(card); 1061 if (card->options.sbp.supported_funcs) 1062 dev_info(&card->gdev->dev, 1063 "The device represents a Bridge Capable Port\n"); 1064 1065 if (!card->dev && qeth_l2_setup_netdev(card)) { 1066 rc = -ENODEV; 1067 goto out_remove; 1068 } 1069 1070 if (card->info.type != QETH_CARD_TYPE_OSN) 1071 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1072 1073 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1074 if (card->info.hwtrap && 1075 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1076 card->info.hwtrap = 0; 1077 } else 1078 card->info.hwtrap = 0; 1079 1080 /* for the rx_bcast characteristic, init VNICC after setmac */ 1081 qeth_l2_vnicc_init(card); 1082 1083 qeth_trace_features(card); 1084 qeth_l2_trace_features(card); 1085 1086 qeth_l2_setup_bridgeport_attrs(card); 1087 1088 card->state = CARD_STATE_HARDSETUP; 1089 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1090 qeth_print_status_message(card); 1091 1092 /* softsetup */ 1093 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1094 1095 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1096 (card->info.type == QETH_CARD_TYPE_OSX)) { 1097 rc = qeth_l2_start_ipassists(card); 1098 if (rc) 1099 goto out_remove; 1100 } 1101 1102 if (card->info.type != QETH_CARD_TYPE_OSN) 1103 qeth_l2_process_vlans(card); 1104 1105 netif_tx_disable(card->dev); 1106 1107 rc = qeth_init_qdio_queues(card); 1108 if (rc) { 1109 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1110 rc = -ENODEV; 1111 goto out_remove; 1112 } 1113 card->state = CARD_STATE_SOFTSETUP; 1114 if (card->lan_online) 1115 netif_carrier_on(card->dev); 1116 else 1117 netif_carrier_off(card->dev); 1118 1119 qeth_set_allowed_threads(card, 0xffffffff, 0); 1120 if (recover_flag == CARD_STATE_RECOVER) { 1121 if (recovery_mode && 1122 card->info.type != QETH_CARD_TYPE_OSN) { 1123 __qeth_l2_open(card->dev); 1124 } else { 1125 rtnl_lock(); 1126 dev_open(card->dev); 1127 rtnl_unlock(); 1128 } 1129 /* this also sets saved unicast addresses */ 1130 qeth_l2_set_rx_mode(card->dev); 1131 rtnl_lock(); 1132 qeth_recover_features(card->dev); 1133 rtnl_unlock(); 1134 } 1135 /* let user_space know that device is online */ 1136 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1137 mutex_unlock(&card->conf_mutex); 1138 mutex_unlock(&card->discipline_mutex); 1139 return 0; 1140 1141 out_remove: 1142 qeth_l2_stop_card(card, 0); 1143 ccw_device_set_offline(CARD_DDEV(card)); 1144 ccw_device_set_offline(CARD_WDEV(card)); 1145 ccw_device_set_offline(CARD_RDEV(card)); 1146 qdio_free(CARD_DDEV(card)); 1147 if (recover_flag == CARD_STATE_RECOVER) 1148 card->state = CARD_STATE_RECOVER; 1149 else 1150 card->state = CARD_STATE_DOWN; 1151 mutex_unlock(&card->conf_mutex); 1152 mutex_unlock(&card->discipline_mutex); 1153 return rc; 1154 } 1155 1156 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1157 { 1158 return __qeth_l2_set_online(gdev, 0); 1159 } 1160 1161 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1162 int recovery_mode) 1163 { 1164 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1165 int rc = 0, rc2 = 0, rc3 = 0; 1166 enum qeth_card_states recover_flag; 1167 1168 mutex_lock(&card->discipline_mutex); 1169 mutex_lock(&card->conf_mutex); 1170 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1171 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1172 1173 if (card->dev && netif_carrier_ok(card->dev)) 1174 netif_carrier_off(card->dev); 1175 recover_flag = card->state; 1176 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1177 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1178 card->info.hwtrap = 1; 1179 } 1180 qeth_l2_stop_card(card, recovery_mode); 1181 rc = ccw_device_set_offline(CARD_DDEV(card)); 1182 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1183 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1184 if (!rc) 1185 rc = (rc2) ? rc2 : rc3; 1186 if (rc) 1187 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1188 qdio_free(CARD_DDEV(card)); 1189 if (recover_flag == CARD_STATE_UP) 1190 card->state = CARD_STATE_RECOVER; 1191 /* let user_space know that device is offline */ 1192 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1193 mutex_unlock(&card->conf_mutex); 1194 mutex_unlock(&card->discipline_mutex); 1195 return 0; 1196 } 1197 1198 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1199 { 1200 return __qeth_l2_set_offline(cgdev, 0); 1201 } 1202 1203 static int qeth_l2_recover(void *ptr) 1204 { 1205 struct qeth_card *card; 1206 int rc = 0; 1207 1208 card = (struct qeth_card *) ptr; 1209 QETH_CARD_TEXT(card, 2, "recover1"); 1210 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1211 return 0; 1212 QETH_CARD_TEXT(card, 2, "recover2"); 1213 dev_warn(&card->gdev->dev, 1214 "A recovery process has been started for the device\n"); 1215 qeth_set_recovery_task(card); 1216 __qeth_l2_set_offline(card->gdev, 1); 1217 rc = __qeth_l2_set_online(card->gdev, 1); 1218 if (!rc) 1219 dev_info(&card->gdev->dev, 1220 "Device successfully recovered!\n"); 1221 else { 1222 qeth_close_dev(card); 1223 dev_warn(&card->gdev->dev, "The qeth device driver " 1224 "failed to recover an error on the device\n"); 1225 } 1226 qeth_clear_recovery_task(card); 1227 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1228 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1229 return 0; 1230 } 1231 1232 static int __init qeth_l2_init(void) 1233 { 1234 pr_info("register layer 2 discipline\n"); 1235 return 0; 1236 } 1237 1238 static void __exit qeth_l2_exit(void) 1239 { 1240 pr_info("unregister layer 2 discipline\n"); 1241 } 1242 1243 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1244 { 1245 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1246 1247 if (card->dev) 1248 netif_device_detach(card->dev); 1249 qeth_set_allowed_threads(card, 0, 1); 1250 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1251 if (gdev->state == CCWGROUP_OFFLINE) 1252 return 0; 1253 if (card->state == CARD_STATE_UP) { 1254 if (card->info.hwtrap) 1255 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1256 __qeth_l2_set_offline(card->gdev, 1); 1257 } else 1258 __qeth_l2_set_offline(card->gdev, 0); 1259 return 0; 1260 } 1261 1262 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1263 { 1264 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1265 int rc = 0; 1266 1267 if (gdev->state == CCWGROUP_OFFLINE) 1268 goto out; 1269 1270 if (card->state == CARD_STATE_RECOVER) { 1271 rc = __qeth_l2_set_online(card->gdev, 1); 1272 if (rc) { 1273 rtnl_lock(); 1274 dev_close(card->dev); 1275 rtnl_unlock(); 1276 } 1277 } else 1278 rc = __qeth_l2_set_online(card->gdev, 0); 1279 out: 1280 qeth_set_allowed_threads(card, 0xffffffff, 0); 1281 if (card->dev) 1282 netif_device_attach(card->dev); 1283 if (rc) 1284 dev_warn(&card->gdev->dev, "The qeth device driver " 1285 "failed to recover an error on the device\n"); 1286 return rc; 1287 } 1288 1289 /* Returns zero if the command is successfully "consumed" */ 1290 static int qeth_l2_control_event(struct qeth_card *card, 1291 struct qeth_ipa_cmd *cmd) 1292 { 1293 switch (cmd->hdr.command) { 1294 case IPA_CMD_SETBRIDGEPORT_OSA: 1295 case IPA_CMD_SETBRIDGEPORT_IQD: 1296 if (cmd->data.sbp.hdr.command_code == 1297 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1298 qeth_bridge_state_change(card, cmd); 1299 return 0; 1300 } else 1301 return 1; 1302 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1303 qeth_bridge_host_event(card, cmd); 1304 return 0; 1305 default: 1306 return 1; 1307 } 1308 } 1309 1310 struct qeth_discipline qeth_l2_discipline = { 1311 .devtype = &qeth_l2_devtype, 1312 .start_poll = qeth_qdio_start_poll, 1313 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1314 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1315 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1316 .recover = qeth_l2_recover, 1317 .setup = qeth_l2_probe_device, 1318 .remove = qeth_l2_remove_device, 1319 .set_online = qeth_l2_set_online, 1320 .set_offline = qeth_l2_set_offline, 1321 .freeze = qeth_l2_pm_suspend, 1322 .thaw = qeth_l2_pm_resume, 1323 .restore = qeth_l2_pm_resume, 1324 .do_ioctl = NULL, 1325 .control_event_handler = qeth_l2_control_event, 1326 }; 1327 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1328 1329 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1330 struct qeth_cmd_buffer *iob) 1331 { 1332 unsigned long flags; 1333 int rc = 0; 1334 1335 QETH_CARD_TEXT(card, 5, "osndctrd"); 1336 1337 wait_event(card->wait_q, 1338 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1339 qeth_prepare_control_data(card, len, iob); 1340 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1341 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1342 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1343 (addr_t) iob, 0, 0); 1344 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1345 if (rc) { 1346 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1347 "ccw_device_start rc = %i\n", rc); 1348 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1349 qeth_release_buffer(iob->channel, iob); 1350 atomic_set(&card->write.irq_pending, 0); 1351 wake_up(&card->wait_q); 1352 } 1353 return rc; 1354 } 1355 1356 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1357 struct qeth_cmd_buffer *iob, int data_len) 1358 { 1359 u16 s1, s2; 1360 1361 QETH_CARD_TEXT(card, 4, "osndipa"); 1362 1363 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1364 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1365 s2 = (u16)data_len; 1366 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1367 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1368 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1369 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1370 return qeth_osn_send_control_data(card, s1, iob); 1371 } 1372 1373 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1374 { 1375 struct qeth_cmd_buffer *iob; 1376 struct qeth_card *card; 1377 int rc; 1378 1379 if (!dev) 1380 return -ENODEV; 1381 card = dev->ml_priv; 1382 if (!card) 1383 return -ENODEV; 1384 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1385 if (!qeth_card_hw_is_reachable(card)) 1386 return -ENODEV; 1387 iob = qeth_wait_for_buffer(&card->write); 1388 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1389 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1390 return rc; 1391 } 1392 EXPORT_SYMBOL(qeth_osn_assist); 1393 1394 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1395 int (*assist_cb)(struct net_device *, void *), 1396 int (*data_cb)(struct sk_buff *)) 1397 { 1398 struct qeth_card *card; 1399 1400 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1401 if (*dev == NULL) 1402 return -ENODEV; 1403 card = (*dev)->ml_priv; 1404 if (!card) 1405 return -ENODEV; 1406 QETH_CARD_TEXT(card, 2, "osnreg"); 1407 if ((assist_cb == NULL) || (data_cb == NULL)) 1408 return -EINVAL; 1409 card->osn_info.assist_cb = assist_cb; 1410 card->osn_info.data_cb = data_cb; 1411 return 0; 1412 } 1413 EXPORT_SYMBOL(qeth_osn_register); 1414 1415 void qeth_osn_deregister(struct net_device *dev) 1416 { 1417 struct qeth_card *card; 1418 1419 if (!dev) 1420 return; 1421 card = dev->ml_priv; 1422 if (!card) 1423 return; 1424 QETH_CARD_TEXT(card, 2, "osndereg"); 1425 card->osn_info.assist_cb = NULL; 1426 card->osn_info.data_cb = NULL; 1427 return; 1428 } 1429 EXPORT_SYMBOL(qeth_osn_deregister); 1430 1431 /* SETBRIDGEPORT support, async notifications */ 1432 1433 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1434 1435 /** 1436 * qeth_bridge_emit_host_event() - bridgeport address change notification 1437 * @card: qeth_card structure pointer, for udev events. 1438 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1439 * and reset token and addr_lnid are unused and may be NULL. 1440 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1441 * object, 0 - addition of an object. 1442 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1443 * @token: "network token" structure identifying physical address of the port. 1444 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1445 * 1446 * This function is called when registrations and deregistrations are 1447 * reported by the hardware, and also when notifications are enabled - 1448 * for all currently registered addresses. 1449 */ 1450 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1451 enum qeth_an_event_type evtype, 1452 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1453 { 1454 char str[7][32]; 1455 char *env[8]; 1456 int i = 0; 1457 1458 switch (evtype) { 1459 case anev_reg_unreg: 1460 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1461 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1462 ? "deregister" : "register"); 1463 env[i] = str[i]; i++; 1464 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1465 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1466 addr_lnid->lnid); 1467 env[i] = str[i]; i++; 1468 } 1469 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1470 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1471 addr_lnid->mac); 1472 env[i] = str[i]; i++; 1473 } 1474 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1475 token->cssid, token->ssid, token->devnum); 1476 env[i] = str[i]; i++; 1477 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1478 env[i] = str[i]; i++; 1479 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1480 token->chpid); 1481 env[i] = str[i]; i++; 1482 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1483 env[i] = str[i]; i++; 1484 break; 1485 case anev_abort: 1486 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1487 env[i] = str[i]; i++; 1488 break; 1489 case anev_reset: 1490 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1491 env[i] = str[i]; i++; 1492 break; 1493 } 1494 env[i] = NULL; 1495 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1496 } 1497 1498 struct qeth_bridge_state_data { 1499 struct work_struct worker; 1500 struct qeth_card *card; 1501 struct qeth_sbp_state_change qports; 1502 }; 1503 1504 static void qeth_bridge_state_change_worker(struct work_struct *work) 1505 { 1506 struct qeth_bridge_state_data *data = 1507 container_of(work, struct qeth_bridge_state_data, worker); 1508 /* We are only interested in the first entry - local port */ 1509 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1510 char env_locrem[32]; 1511 char env_role[32]; 1512 char env_state[32]; 1513 char *env[] = { 1514 env_locrem, 1515 env_role, 1516 env_state, 1517 NULL 1518 }; 1519 1520 /* Role should not change by itself, but if it did, */ 1521 /* information from the hardware is authoritative. */ 1522 mutex_lock(&data->card->conf_mutex); 1523 data->card->options.sbp.role = entry->role; 1524 mutex_unlock(&data->card->conf_mutex); 1525 1526 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1527 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1528 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1529 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1530 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1531 "<INVALID>"); 1532 snprintf(env_state, sizeof(env_state), "STATE=%s", 1533 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1534 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1535 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1536 "<INVALID>"); 1537 kobject_uevent_env(&data->card->gdev->dev.kobj, 1538 KOBJ_CHANGE, env); 1539 kfree(data); 1540 } 1541 1542 static void qeth_bridge_state_change(struct qeth_card *card, 1543 struct qeth_ipa_cmd *cmd) 1544 { 1545 struct qeth_sbp_state_change *qports = 1546 &cmd->data.sbp.data.state_change; 1547 struct qeth_bridge_state_data *data; 1548 int extrasize; 1549 1550 QETH_CARD_TEXT(card, 2, "brstchng"); 1551 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1552 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1553 return; 1554 } 1555 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1556 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1557 GFP_ATOMIC); 1558 if (!data) { 1559 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1560 return; 1561 } 1562 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1563 data->card = card; 1564 memcpy(&data->qports, qports, 1565 sizeof(struct qeth_sbp_state_change) + extrasize); 1566 queue_work(qeth_wq, &data->worker); 1567 } 1568 1569 struct qeth_bridge_host_data { 1570 struct work_struct worker; 1571 struct qeth_card *card; 1572 struct qeth_ipacmd_addr_change hostevs; 1573 }; 1574 1575 static void qeth_bridge_host_event_worker(struct work_struct *work) 1576 { 1577 struct qeth_bridge_host_data *data = 1578 container_of(work, struct qeth_bridge_host_data, worker); 1579 int i; 1580 1581 if (data->hostevs.lost_event_mask) { 1582 dev_info(&data->card->gdev->dev, 1583 "Address notification from the Bridge Port stopped %s (%s)\n", 1584 data->card->dev->name, 1585 (data->hostevs.lost_event_mask == 0x01) 1586 ? "Overflow" 1587 : (data->hostevs.lost_event_mask == 0x02) 1588 ? "Bridge port state change" 1589 : "Unknown reason"); 1590 mutex_lock(&data->card->conf_mutex); 1591 data->card->options.sbp.hostnotification = 0; 1592 mutex_unlock(&data->card->conf_mutex); 1593 qeth_bridge_emit_host_event(data->card, anev_abort, 1594 0, NULL, NULL); 1595 } else 1596 for (i = 0; i < data->hostevs.num_entries; i++) { 1597 struct qeth_ipacmd_addr_change_entry *entry = 1598 &data->hostevs.entry[i]; 1599 qeth_bridge_emit_host_event(data->card, 1600 anev_reg_unreg, 1601 entry->change_code, 1602 &entry->token, &entry->addr_lnid); 1603 } 1604 kfree(data); 1605 } 1606 1607 static void qeth_bridge_host_event(struct qeth_card *card, 1608 struct qeth_ipa_cmd *cmd) 1609 { 1610 struct qeth_ipacmd_addr_change *hostevs = 1611 &cmd->data.addrchange; 1612 struct qeth_bridge_host_data *data; 1613 int extrasize; 1614 1615 QETH_CARD_TEXT(card, 2, "brhostev"); 1616 if (cmd->hdr.return_code != 0x0000) { 1617 if (cmd->hdr.return_code == 0x0010) { 1618 if (hostevs->lost_event_mask == 0x00) 1619 hostevs->lost_event_mask = 0xff; 1620 } else { 1621 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1622 cmd->hdr.return_code); 1623 return; 1624 } 1625 } 1626 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1627 hostevs->num_entries; 1628 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1629 GFP_ATOMIC); 1630 if (!data) { 1631 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1632 return; 1633 } 1634 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1635 data->card = card; 1636 memcpy(&data->hostevs, hostevs, 1637 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1638 queue_work(qeth_wq, &data->worker); 1639 } 1640 1641 /* SETBRIDGEPORT support; sending commands */ 1642 1643 struct _qeth_sbp_cbctl { 1644 u16 ipa_rc; 1645 u16 cmd_rc; 1646 union { 1647 u32 supported; 1648 struct { 1649 enum qeth_sbp_roles *role; 1650 enum qeth_sbp_states *state; 1651 } qports; 1652 } data; 1653 }; 1654 1655 /** 1656 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1657 * @card: qeth_card structure pointer, for debug messages. 1658 * @cbctl: state structure with hardware return codes. 1659 * @setcmd: IPA command code 1660 * 1661 * Returns negative errno-compatible error indication or 0 on success. 1662 */ 1663 static int qeth_bridgeport_makerc(struct qeth_card *card, 1664 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1665 { 1666 int rc; 1667 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1668 1669 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1670 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1671 switch (cbctl->cmd_rc) { 1672 case IPA_RC_SUCCESS: 1673 rc = 0; 1674 break; 1675 case IPA_RC_L2_UNSUPPORTED_CMD: 1676 case IPA_RC_UNSUPPORTED_COMMAND: 1677 rc = -EOPNOTSUPP; 1678 break; 1679 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1680 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1681 rc = -ENODEV; /* maybe not the best code here? */ 1682 dev_err(&card->gdev->dev, 1683 "The device is not configured as a Bridge Port\n"); 1684 break; 1685 case IPA_RC_SBP_OSA_OS_MISMATCH: 1686 case IPA_RC_SBP_IQD_OS_MISMATCH: 1687 rc = -EPERM; 1688 dev_err(&card->gdev->dev, 1689 "A Bridge Port is already configured by a different operating system\n"); 1690 break; 1691 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1692 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1693 switch (setcmd) { 1694 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1695 rc = -EEXIST; 1696 dev_err(&card->gdev->dev, 1697 "The LAN already has a primary Bridge Port\n"); 1698 break; 1699 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1700 rc = -EBUSY; 1701 dev_err(&card->gdev->dev, 1702 "The device is already a primary Bridge Port\n"); 1703 break; 1704 default: 1705 rc = -EIO; 1706 } 1707 break; 1708 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1709 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1710 rc = -EBUSY; 1711 dev_err(&card->gdev->dev, 1712 "The device is already a secondary Bridge Port\n"); 1713 break; 1714 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1715 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1716 rc = -EEXIST; 1717 dev_err(&card->gdev->dev, 1718 "The LAN cannot have more secondary Bridge Ports\n"); 1719 break; 1720 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1721 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1722 rc = -EBUSY; 1723 dev_err(&card->gdev->dev, 1724 "The device is already a primary Bridge Port\n"); 1725 break; 1726 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1727 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1728 rc = -EACCES; 1729 dev_err(&card->gdev->dev, 1730 "The device is not authorized to be a Bridge Port\n"); 1731 break; 1732 default: 1733 rc = -EIO; 1734 } 1735 else 1736 switch (cbctl->ipa_rc) { 1737 case IPA_RC_NOTSUPP: 1738 rc = -EOPNOTSUPP; 1739 break; 1740 case IPA_RC_UNSUPPORTED_COMMAND: 1741 rc = -EOPNOTSUPP; 1742 break; 1743 default: 1744 rc = -EIO; 1745 } 1746 1747 if (rc) { 1748 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1749 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1750 } 1751 return rc; 1752 } 1753 1754 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1755 enum qeth_ipa_sbp_cmd sbp_cmd, 1756 unsigned int cmd_length) 1757 { 1758 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ? 1759 IPA_CMD_SETBRIDGEPORT_IQD : 1760 IPA_CMD_SETBRIDGEPORT_OSA; 1761 struct qeth_cmd_buffer *iob; 1762 struct qeth_ipa_cmd *cmd; 1763 1764 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0); 1765 if (!iob) 1766 return iob; 1767 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1768 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1769 cmd_length; 1770 cmd->data.sbp.hdr.command_code = sbp_cmd; 1771 cmd->data.sbp.hdr.used_total = 1; 1772 cmd->data.sbp.hdr.seq_no = 1; 1773 return iob; 1774 } 1775 1776 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1777 struct qeth_reply *reply, unsigned long data) 1778 { 1779 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1780 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1781 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1782 cbctl->ipa_rc = cmd->hdr.return_code; 1783 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1784 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1785 cbctl->data.supported = 1786 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1787 } else { 1788 cbctl->data.supported = 0; 1789 } 1790 return 0; 1791 } 1792 1793 /** 1794 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1795 * @card: qeth_card structure pointer. 1796 * 1797 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1798 * strucutre: card->options.sbp.supported_funcs. 1799 */ 1800 static void qeth_bridgeport_query_support(struct qeth_card *card) 1801 { 1802 struct qeth_cmd_buffer *iob; 1803 struct _qeth_sbp_cbctl cbctl; 1804 1805 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1806 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1807 sizeof(struct qeth_sbp_query_cmds_supp)); 1808 if (!iob) 1809 return; 1810 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1811 (void *)&cbctl) || 1812 qeth_bridgeport_makerc(card, &cbctl, 1813 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1814 /* non-zero makerc signifies failure, and produce messages */ 1815 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1816 return; 1817 } 1818 card->options.sbp.supported_funcs = cbctl.data.supported; 1819 } 1820 1821 static int qeth_bridgeport_query_ports_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_query_ports *qports = &cmd->data.sbp.data.query_ports; 1826 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1827 1828 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1829 cbctl->ipa_rc = cmd->hdr.return_code; 1830 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1831 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1832 return 0; 1833 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1834 cbctl->cmd_rc = 0xffff; 1835 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1836 return 0; 1837 } 1838 /* first entry contains the state of the local port */ 1839 if (qports->num_entries > 0) { 1840 if (cbctl->data.qports.role) 1841 *cbctl->data.qports.role = qports->entry[0].role; 1842 if (cbctl->data.qports.state) 1843 *cbctl->data.qports.state = qports->entry[0].state; 1844 } 1845 return 0; 1846 } 1847 1848 /** 1849 * qeth_bridgeport_query_ports() - query local bridgeport status. 1850 * @card: qeth_card structure pointer. 1851 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1852 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1853 * 1854 * Returns negative errno-compatible error indication or 0 on success. 1855 * 1856 * 'role' and 'state' are not updated in case of hardware operation failure. 1857 */ 1858 int qeth_bridgeport_query_ports(struct qeth_card *card, 1859 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1860 { 1861 int rc = 0; 1862 struct qeth_cmd_buffer *iob; 1863 struct _qeth_sbp_cbctl cbctl = { 1864 .data = { 1865 .qports = { 1866 .role = role, 1867 .state = state, 1868 }, 1869 }, 1870 }; 1871 1872 QETH_CARD_TEXT(card, 2, "brqports"); 1873 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1874 return -EOPNOTSUPP; 1875 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1876 if (!iob) 1877 return -ENOMEM; 1878 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1879 (void *)&cbctl); 1880 if (rc < 0) 1881 return rc; 1882 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1883 } 1884 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1885 1886 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1887 struct qeth_reply *reply, unsigned long data) 1888 { 1889 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1890 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1891 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1892 cbctl->ipa_rc = cmd->hdr.return_code; 1893 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1894 return 0; 1895 } 1896 1897 /** 1898 * qeth_bridgeport_setrole() - Assign primary role to the port. 1899 * @card: qeth_card structure pointer. 1900 * @role: Role to assign. 1901 * 1902 * Returns negative errno-compatible error indication or 0 on success. 1903 */ 1904 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1905 { 1906 int rc = 0; 1907 int cmdlength; 1908 struct qeth_cmd_buffer *iob; 1909 struct _qeth_sbp_cbctl cbctl; 1910 enum qeth_ipa_sbp_cmd setcmd; 1911 1912 QETH_CARD_TEXT(card, 2, "brsetrol"); 1913 switch (role) { 1914 case QETH_SBP_ROLE_NONE: 1915 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1916 cmdlength = sizeof(struct qeth_sbp_reset_role); 1917 break; 1918 case QETH_SBP_ROLE_PRIMARY: 1919 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1920 cmdlength = sizeof(struct qeth_sbp_set_primary); 1921 break; 1922 case QETH_SBP_ROLE_SECONDARY: 1923 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1924 cmdlength = sizeof(struct qeth_sbp_set_secondary); 1925 break; 1926 default: 1927 return -EINVAL; 1928 } 1929 if (!(card->options.sbp.supported_funcs & setcmd)) 1930 return -EOPNOTSUPP; 1931 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1932 if (!iob) 1933 return -ENOMEM; 1934 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 1935 (void *)&cbctl); 1936 if (rc < 0) 1937 return rc; 1938 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 1939 } 1940 1941 /** 1942 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1943 * @card: qeth_card structure pointer, for debug messages. 1944 * 1945 * Returns negative errno-compatible error indication or 0 on success. 1946 */ 1947 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1948 { 1949 int rc; 1950 1951 if (pnso_rc == 0) 1952 switch (response) { 1953 case 0x0001: 1954 rc = 0; 1955 break; 1956 case 0x0004: 1957 case 0x0100: 1958 case 0x0106: 1959 rc = -EOPNOTSUPP; 1960 dev_err(&card->gdev->dev, 1961 "Setting address notification failed\n"); 1962 break; 1963 case 0x0107: 1964 rc = -EAGAIN; 1965 break; 1966 default: 1967 rc = -EIO; 1968 } 1969 else 1970 rc = -EIO; 1971 1972 if (rc) { 1973 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1974 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1975 } 1976 return rc; 1977 } 1978 1979 static void qeth_bridgeport_an_set_cb(void *priv, 1980 enum qdio_brinfo_entry_type type, void *entry) 1981 { 1982 struct qeth_card *card = (struct qeth_card *)priv; 1983 struct qdio_brinfo_entry_l2 *l2entry; 1984 u8 code; 1985 1986 if (type != l2_addr_lnid) { 1987 WARN_ON_ONCE(1); 1988 return; 1989 } 1990 1991 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1992 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1993 if (l2entry->addr_lnid.lnid) 1994 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1995 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1996 (struct net_if_token *)&l2entry->nit, 1997 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1998 } 1999 2000 /** 2001 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 2002 * @card: qeth_card structure pointer. 2003 * @enable: 0 - disable, non-zero - enable notifications 2004 * 2005 * Returns negative errno-compatible error indication or 0 on success. 2006 * 2007 * On enable, emits a series of address notifications udev events for all 2008 * currently registered hosts. 2009 */ 2010 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2011 { 2012 int rc; 2013 u16 response; 2014 struct ccw_device *ddev; 2015 struct subchannel_id schid; 2016 2017 if (!card) 2018 return -EINVAL; 2019 if (!card->options.sbp.supported_funcs) 2020 return -EOPNOTSUPP; 2021 ddev = CARD_DDEV(card); 2022 ccw_device_get_schid(ddev, &schid); 2023 2024 if (enable) { 2025 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2026 rc = qdio_pnso_brinfo(schid, 1, &response, 2027 qeth_bridgeport_an_set_cb, card); 2028 } else 2029 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2030 return qeth_anset_makerc(card, rc, response); 2031 } 2032 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2033 2034 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 2035 { 2036 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 2037 card->options.sbp.hostnotification); 2038 } 2039 2040 /* VNIC Characteristics support */ 2041 2042 /* handle VNICC IPA command return codes; convert to error codes */ 2043 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc) 2044 { 2045 int rc; 2046 2047 switch (ipa_rc) { 2048 case IPA_RC_SUCCESS: 2049 return ipa_rc; 2050 case IPA_RC_L2_UNSUPPORTED_CMD: 2051 case IPA_RC_NOTSUPP: 2052 rc = -EOPNOTSUPP; 2053 break; 2054 case IPA_RC_VNICC_OOSEQ: 2055 rc = -EALREADY; 2056 break; 2057 case IPA_RC_VNICC_VNICBP: 2058 rc = -EBUSY; 2059 break; 2060 case IPA_RC_L2_ADDR_TABLE_FULL: 2061 rc = -ENOSPC; 2062 break; 2063 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 2064 rc = -EACCES; 2065 break; 2066 default: 2067 rc = -EIO; 2068 } 2069 2070 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 2071 return rc; 2072 } 2073 2074 /* generic VNICC request call back control */ 2075 struct _qeth_l2_vnicc_request_cbctl { 2076 u32 sub_cmd; 2077 struct { 2078 u32 vnic_char; 2079 u32 timeout; 2080 } param; 2081 struct { 2082 union{ 2083 u32 *sup_cmds; 2084 u32 *timeout; 2085 }; 2086 } result; 2087 }; 2088 2089 /* generic VNICC request call back */ 2090 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 2091 struct qeth_reply *reply, 2092 unsigned long data) 2093 { 2094 struct _qeth_l2_vnicc_request_cbctl *cbctl = 2095 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 2096 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2097 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 2098 2099 QETH_CARD_TEXT(card, 2, "vniccrcb"); 2100 if (cmd->hdr.return_code) 2101 return 0; 2102 /* return results to caller */ 2103 card->options.vnicc.sup_chars = rep->hdr.sup; 2104 card->options.vnicc.cur_chars = rep->hdr.cur; 2105 2106 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS) 2107 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds; 2108 2109 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT) 2110 *cbctl->result.timeout = rep->getset_timeout.timeout; 2111 2112 return 0; 2113 } 2114 2115 /* generic VNICC request */ 2116 static int qeth_l2_vnicc_request(struct qeth_card *card, 2117 struct _qeth_l2_vnicc_request_cbctl *cbctl) 2118 { 2119 struct qeth_ipacmd_vnicc *req; 2120 struct qeth_cmd_buffer *iob; 2121 struct qeth_ipa_cmd *cmd; 2122 int rc; 2123 2124 QETH_CARD_TEXT(card, 2, "vniccreq"); 2125 2126 /* get new buffer for request */ 2127 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0); 2128 if (!iob) 2129 return -ENOMEM; 2130 2131 /* create header for request */ 2132 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 2133 req = &cmd->data.vnicc; 2134 2135 /* create sub command header for request */ 2136 req->sub_hdr.data_length = sizeof(req->sub_hdr); 2137 req->sub_hdr.sub_command = cbctl->sub_cmd; 2138 2139 /* create sub command specific request fields */ 2140 switch (cbctl->sub_cmd) { 2141 case IPA_VNICC_QUERY_CHARS: 2142 break; 2143 case IPA_VNICC_QUERY_CMDS: 2144 req->sub_hdr.data_length += sizeof(req->query_cmds); 2145 req->query_cmds.vnic_char = cbctl->param.vnic_char; 2146 break; 2147 case IPA_VNICC_ENABLE: 2148 case IPA_VNICC_DISABLE: 2149 req->sub_hdr.data_length += sizeof(req->set_char); 2150 req->set_char.vnic_char = cbctl->param.vnic_char; 2151 break; 2152 case IPA_VNICC_SET_TIMEOUT: 2153 req->getset_timeout.timeout = cbctl->param.timeout; 2154 /* fallthrough */ 2155 case IPA_VNICC_GET_TIMEOUT: 2156 req->sub_hdr.data_length += sizeof(req->getset_timeout); 2157 req->getset_timeout.vnic_char = cbctl->param.vnic_char; 2158 break; 2159 default: 2160 qeth_release_buffer(iob->channel, iob); 2161 return -EOPNOTSUPP; 2162 } 2163 2164 /* send request */ 2165 rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, 2166 (void *) cbctl); 2167 2168 return qeth_l2_vnicc_makerc(card, rc); 2169 } 2170 2171 /* VNICC query VNIC characteristics request */ 2172 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 2173 { 2174 struct _qeth_l2_vnicc_request_cbctl cbctl; 2175 2176 /* prepare callback control */ 2177 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS; 2178 2179 QETH_CARD_TEXT(card, 2, "vniccqch"); 2180 return qeth_l2_vnicc_request(card, &cbctl); 2181 } 2182 2183 /* VNICC query sub commands request */ 2184 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 2185 u32 *sup_cmds) 2186 { 2187 struct _qeth_l2_vnicc_request_cbctl cbctl; 2188 2189 /* prepare callback control */ 2190 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS; 2191 cbctl.param.vnic_char = vnic_char; 2192 cbctl.result.sup_cmds = sup_cmds; 2193 2194 QETH_CARD_TEXT(card, 2, "vniccqcm"); 2195 return qeth_l2_vnicc_request(card, &cbctl); 2196 } 2197 2198 /* VNICC enable/disable characteristic request */ 2199 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 2200 u32 cmd) 2201 { 2202 struct _qeth_l2_vnicc_request_cbctl cbctl; 2203 2204 /* prepare callback control */ 2205 cbctl.sub_cmd = cmd; 2206 cbctl.param.vnic_char = vnic_char; 2207 2208 QETH_CARD_TEXT(card, 2, "vniccedc"); 2209 return qeth_l2_vnicc_request(card, &cbctl); 2210 } 2211 2212 /* VNICC get/set timeout for characteristic request */ 2213 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 2214 u32 cmd, u32 *timeout) 2215 { 2216 struct _qeth_l2_vnicc_request_cbctl cbctl; 2217 2218 /* prepare callback control */ 2219 cbctl.sub_cmd = cmd; 2220 cbctl.param.vnic_char = vnicc; 2221 if (cmd == IPA_VNICC_SET_TIMEOUT) 2222 cbctl.param.timeout = *timeout; 2223 if (cmd == IPA_VNICC_GET_TIMEOUT) 2224 cbctl.result.timeout = timeout; 2225 2226 QETH_CARD_TEXT(card, 2, "vniccgst"); 2227 return qeth_l2_vnicc_request(card, &cbctl); 2228 } 2229 2230 /* set current VNICC flag state; called from sysfs store function */ 2231 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 2232 { 2233 int rc = 0; 2234 u32 cmd; 2235 2236 QETH_CARD_TEXT(card, 2, "vniccsch"); 2237 2238 /* do not change anything if BridgePort is enabled */ 2239 if (qeth_bridgeport_is_in_use(card)) 2240 return -EBUSY; 2241 2242 /* check if characteristic and enable/disable are supported */ 2243 if (!(card->options.vnicc.sup_chars & vnicc) || 2244 !(card->options.vnicc.set_char_sup & vnicc)) 2245 return -EOPNOTSUPP; 2246 2247 /* set enable/disable command and store wanted characteristic */ 2248 if (state) { 2249 cmd = IPA_VNICC_ENABLE; 2250 card->options.vnicc.wanted_chars |= vnicc; 2251 } else { 2252 cmd = IPA_VNICC_DISABLE; 2253 card->options.vnicc.wanted_chars &= ~vnicc; 2254 } 2255 2256 /* do we need to do anything? */ 2257 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 2258 return rc; 2259 2260 /* if card is not ready, simply stop here */ 2261 if (!qeth_card_hw_is_reachable(card)) { 2262 if (state) 2263 card->options.vnicc.cur_chars |= vnicc; 2264 else 2265 card->options.vnicc.cur_chars &= ~vnicc; 2266 return rc; 2267 } 2268 2269 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 2270 if (rc) 2271 card->options.vnicc.wanted_chars = 2272 card->options.vnicc.cur_chars; 2273 else { 2274 /* successful online VNICC change; handle special cases */ 2275 if (state && vnicc == QETH_VNICC_RX_BCAST) 2276 card->options.vnicc.rx_bcast_enabled = true; 2277 if (!state && vnicc == QETH_VNICC_LEARNING) 2278 qeth_l2_vnicc_recover_timeout(card, vnicc, 2279 &card->options.vnicc.learning_timeout); 2280 } 2281 2282 return rc; 2283 } 2284 2285 /* get current VNICC flag state; called from sysfs show function */ 2286 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 2287 { 2288 int rc = 0; 2289 2290 QETH_CARD_TEXT(card, 2, "vniccgch"); 2291 2292 /* do not get anything if BridgePort is enabled */ 2293 if (qeth_bridgeport_is_in_use(card)) 2294 return -EBUSY; 2295 2296 /* check if characteristic is supported */ 2297 if (!(card->options.vnicc.sup_chars & vnicc)) 2298 return -EOPNOTSUPP; 2299 2300 /* if card is ready, query current VNICC state */ 2301 if (qeth_card_hw_is_reachable(card)) 2302 rc = qeth_l2_vnicc_query_chars(card); 2303 2304 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 2305 return rc; 2306 } 2307 2308 /* set VNICC timeout; called from sysfs store function. Currently, only learning 2309 * supports timeout 2310 */ 2311 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 2312 { 2313 int rc = 0; 2314 2315 QETH_CARD_TEXT(card, 2, "vniccsto"); 2316 2317 /* do not change anything if BridgePort is enabled */ 2318 if (qeth_bridgeport_is_in_use(card)) 2319 return -EBUSY; 2320 2321 /* check if characteristic and set_timeout are supported */ 2322 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2323 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2324 return -EOPNOTSUPP; 2325 2326 /* do we need to do anything? */ 2327 if (card->options.vnicc.learning_timeout == timeout) 2328 return rc; 2329 2330 /* if card is not ready, simply store the value internally and return */ 2331 if (!qeth_card_hw_is_reachable(card)) { 2332 card->options.vnicc.learning_timeout = timeout; 2333 return rc; 2334 } 2335 2336 /* send timeout value to card; if successful, store value internally */ 2337 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2338 IPA_VNICC_SET_TIMEOUT, &timeout); 2339 if (!rc) 2340 card->options.vnicc.learning_timeout = timeout; 2341 2342 return rc; 2343 } 2344 2345 /* get current VNICC timeout; called from sysfs show function. Currently, only 2346 * learning supports timeout 2347 */ 2348 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 2349 { 2350 int rc = 0; 2351 2352 QETH_CARD_TEXT(card, 2, "vniccgto"); 2353 2354 /* do not get anything if BridgePort is enabled */ 2355 if (qeth_bridgeport_is_in_use(card)) 2356 return -EBUSY; 2357 2358 /* check if characteristic and get_timeout are supported */ 2359 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2360 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2361 return -EOPNOTSUPP; 2362 /* if card is ready, get timeout. Otherwise, just return stored value */ 2363 *timeout = card->options.vnicc.learning_timeout; 2364 if (qeth_card_hw_is_reachable(card)) 2365 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2366 IPA_VNICC_GET_TIMEOUT, 2367 timeout); 2368 2369 return rc; 2370 } 2371 2372 /* check if VNICC is currently enabled */ 2373 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 2374 { 2375 /* if everything is turned off, VNICC is not active */ 2376 if (!card->options.vnicc.cur_chars) 2377 return false; 2378 /* default values are only OK if rx_bcast was not enabled by user 2379 * or the card is offline. 2380 */ 2381 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 2382 if (!card->options.vnicc.rx_bcast_enabled || 2383 !qeth_card_hw_is_reachable(card)) 2384 return false; 2385 } 2386 return true; 2387 } 2388 2389 /* recover user timeout setting */ 2390 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 2391 u32 *timeout) 2392 { 2393 if (card->options.vnicc.sup_chars & vnicc && 2394 card->options.vnicc.getset_timeout_sup & vnicc && 2395 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 2396 timeout)) 2397 return false; 2398 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2399 return true; 2400 } 2401 2402 /* recover user characteristic setting */ 2403 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2404 bool enable) 2405 { 2406 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2407 2408 if (card->options.vnicc.sup_chars & vnicc && 2409 card->options.vnicc.set_char_sup & vnicc && 2410 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2411 return false; 2412 card->options.vnicc.wanted_chars &= ~vnicc; 2413 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2414 return true; 2415 } 2416 2417 /* (re-)initialize VNICC */ 2418 static void qeth_l2_vnicc_init(struct qeth_card *card) 2419 { 2420 u32 *timeout = &card->options.vnicc.learning_timeout; 2421 unsigned int chars_len, i; 2422 unsigned long chars_tmp; 2423 u32 sup_cmds, vnicc; 2424 bool enable, error; 2425 2426 QETH_CARD_TEXT(card, 2, "vniccini"); 2427 /* reset rx_bcast */ 2428 card->options.vnicc.rx_bcast_enabled = 0; 2429 /* initial query and storage of VNIC characteristics */ 2430 if (qeth_l2_vnicc_query_chars(card)) { 2431 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2432 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2433 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2434 /* fail quietly if user didn't change the default config */ 2435 card->options.vnicc.sup_chars = 0; 2436 card->options.vnicc.cur_chars = 0; 2437 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2438 return; 2439 } 2440 /* get supported commands for each supported characteristic */ 2441 chars_tmp = card->options.vnicc.sup_chars; 2442 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2443 for_each_set_bit(i, &chars_tmp, chars_len) { 2444 vnicc = BIT(i); 2445 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds); 2446 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) || 2447 !(sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2448 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2449 if (!(sup_cmds & IPA_VNICC_ENABLE) || 2450 !(sup_cmds & IPA_VNICC_DISABLE)) 2451 card->options.vnicc.set_char_sup &= ~vnicc; 2452 } 2453 /* enforce assumed default values and recover settings, if changed */ 2454 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2455 timeout); 2456 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; 2457 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; 2458 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2459 for_each_set_bit(i, &chars_tmp, chars_len) { 2460 vnicc = BIT(i); 2461 enable = card->options.vnicc.wanted_chars & vnicc; 2462 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2463 } 2464 if (error) 2465 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2466 } 2467 2468 /* configure default values of VNIC characteristics */ 2469 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2470 { 2471 /* characteristics values */ 2472 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2473 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2474 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2475 /* supported commands */ 2476 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2477 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2478 /* settings wanted by users */ 2479 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2480 } 2481 2482 module_init(qeth_l2_init); 2483 module_exit(qeth_l2_exit); 2484 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2485 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2486 MODULE_LICENSE("GPL"); 2487