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/list.h> 21 #include <linux/hash.h> 22 #include <linux/hashtable.h> 23 #include <asm/setup.h> 24 #include "qeth_core.h" 25 #include "qeth_l2.h" 26 27 static int qeth_l2_set_offline(struct ccwgroup_device *); 28 static void qeth_bridgeport_query_support(struct qeth_card *card); 29 static void qeth_bridge_state_change(struct qeth_card *card, 30 struct qeth_ipa_cmd *cmd); 31 static void qeth_bridge_host_event(struct qeth_card *card, 32 struct qeth_ipa_cmd *cmd); 33 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); 34 static void qeth_l2_vnicc_init(struct qeth_card *card); 35 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 36 u32 *timeout); 37 38 static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode) 39 { 40 int rc; 41 42 if (retcode) 43 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 44 switch (retcode) { 45 case IPA_RC_SUCCESS: 46 rc = 0; 47 break; 48 case IPA_RC_L2_UNSUPPORTED_CMD: 49 rc = -EOPNOTSUPP; 50 break; 51 case IPA_RC_L2_ADDR_TABLE_FULL: 52 rc = -ENOSPC; 53 break; 54 case IPA_RC_L2_DUP_MAC: 55 case IPA_RC_L2_DUP_LAYER3_MAC: 56 rc = -EEXIST; 57 break; 58 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 59 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 60 rc = -EPERM; 61 break; 62 case IPA_RC_L2_MAC_NOT_FOUND: 63 rc = -ENOENT; 64 break; 65 default: 66 rc = -EIO; 67 break; 68 } 69 return rc; 70 } 71 72 static int qeth_l2_send_setdelmac_cb(struct qeth_card *card, 73 struct qeth_reply *reply, 74 unsigned long data) 75 { 76 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 77 78 return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code); 79 } 80 81 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 82 enum qeth_ipa_cmds ipacmd) 83 { 84 struct qeth_ipa_cmd *cmd; 85 struct qeth_cmd_buffer *iob; 86 87 QETH_CARD_TEXT(card, 2, "L2sdmac"); 88 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 89 if (!iob) 90 return -ENOMEM; 91 cmd = __ipa_cmd(iob); 92 cmd->data.setdelmac.mac_length = ETH_ALEN; 93 ether_addr_copy(cmd->data.setdelmac.mac, mac); 94 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelmac_cb, NULL); 95 } 96 97 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 98 { 99 int rc; 100 101 QETH_CARD_TEXT(card, 2, "L2Setmac"); 102 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 103 if (rc == 0) { 104 dev_info(&card->gdev->dev, 105 "MAC address %pM successfully registered\n", mac); 106 } else { 107 switch (rc) { 108 case -EEXIST: 109 dev_warn(&card->gdev->dev, 110 "MAC address %pM already exists\n", mac); 111 break; 112 case -EPERM: 113 dev_warn(&card->gdev->dev, 114 "MAC address %pM is not authorized\n", mac); 115 break; 116 } 117 } 118 return rc; 119 } 120 121 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) 122 { 123 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? 124 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC; 125 int rc; 126 127 QETH_CARD_TEXT(card, 2, "L2Wmac"); 128 rc = qeth_l2_send_setdelmac(card, mac, cmd); 129 if (rc == -EEXIST) 130 QETH_DBF_MESSAGE(2, "MAC already registered on device %x\n", 131 CARD_DEVID(card)); 132 else if (rc) 133 QETH_DBF_MESSAGE(2, "Failed to register MAC on device %x: %d\n", 134 CARD_DEVID(card), rc); 135 return rc; 136 } 137 138 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) 139 { 140 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? 141 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; 142 int rc; 143 144 QETH_CARD_TEXT(card, 2, "L2Rmac"); 145 rc = qeth_l2_send_setdelmac(card, mac, cmd); 146 if (rc) 147 QETH_DBF_MESSAGE(2, "Failed to delete MAC on device %u: %d\n", 148 CARD_DEVID(card), rc); 149 return rc; 150 } 151 152 static void qeth_l2_del_all_macs(struct qeth_card *card) 153 { 154 struct qeth_mac *mac; 155 struct hlist_node *tmp; 156 int i; 157 158 spin_lock_bh(&card->mclock); 159 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 160 hash_del(&mac->hnode); 161 kfree(mac); 162 } 163 spin_unlock_bh(&card->mclock); 164 } 165 166 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 167 { 168 if (card->info.type == QETH_CARD_TYPE_OSN) 169 return RTN_UNICAST; 170 if (is_broadcast_ether_addr(skb->data)) 171 return RTN_BROADCAST; 172 if (is_multicast_ether_addr(skb->data)) 173 return RTN_MULTICAST; 174 return RTN_UNICAST; 175 } 176 177 static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue, 178 struct qeth_hdr *hdr, struct sk_buff *skb, 179 int ipv, int cast_type, unsigned int data_len) 180 { 181 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 182 183 hdr->hdr.l2.pkt_length = data_len; 184 185 if (skb_is_gso(skb)) { 186 hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO; 187 } else { 188 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 189 if (skb->ip_summed == CHECKSUM_PARTIAL) { 190 qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv); 191 QETH_TXQ_STAT_INC(queue, skbs_csum); 192 } 193 } 194 195 /* set byte byte 3 to casting flags */ 196 if (cast_type == RTN_MULTICAST) 197 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 198 else if (cast_type == RTN_BROADCAST) 199 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 200 else 201 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 202 203 /* VSWITCH relies on the VLAN 204 * information to be present in 205 * the QDIO header */ 206 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 207 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 208 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 209 } 210 } 211 212 static int qeth_l2_setdelvlan_makerc(struct qeth_card *card, u16 retcode) 213 { 214 if (retcode) 215 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 216 217 switch (retcode) { 218 case IPA_RC_SUCCESS: 219 return 0; 220 case IPA_RC_L2_INVALID_VLAN_ID: 221 return -EINVAL; 222 case IPA_RC_L2_DUP_VLAN_ID: 223 return -EEXIST; 224 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 225 return -ENOENT; 226 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 227 return -EPERM; 228 default: 229 return -EIO; 230 } 231 } 232 233 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 234 struct qeth_reply *reply, 235 unsigned long data) 236 { 237 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 238 239 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 240 if (cmd->hdr.return_code) { 241 QETH_DBF_MESSAGE(2, "Error in processing VLAN %u on device %x: %#x.\n", 242 cmd->data.setdelvlan.vlan_id, 243 CARD_DEVID(card), cmd->hdr.return_code); 244 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 245 } 246 return qeth_l2_setdelvlan_makerc(card, cmd->hdr.return_code); 247 } 248 249 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 250 enum qeth_ipa_cmds ipacmd) 251 { 252 struct qeth_ipa_cmd *cmd; 253 struct qeth_cmd_buffer *iob; 254 255 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 256 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 257 if (!iob) 258 return -ENOMEM; 259 cmd = __ipa_cmd(iob); 260 cmd->data.setdelvlan.vlan_id = i; 261 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelvlan_cb, NULL); 262 } 263 264 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 265 __be16 proto, u16 vid) 266 { 267 struct qeth_card *card = dev->ml_priv; 268 269 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 270 if (!vid) 271 return 0; 272 273 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 274 } 275 276 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 277 __be16 proto, u16 vid) 278 { 279 struct qeth_card *card = dev->ml_priv; 280 281 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 282 if (!vid) 283 return 0; 284 285 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 286 } 287 288 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 289 { 290 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 291 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 292 293 qeth_set_allowed_threads(card, 0, 1); 294 if (card->read.state == CH_STATE_UP && 295 card->write.state == CH_STATE_UP && 296 (card->state == CARD_STATE_UP)) { 297 if (recovery_mode && !IS_OSN(card)) { 298 qeth_stop(card->dev); 299 } else { 300 rtnl_lock(); 301 dev_close(card->dev); 302 rtnl_unlock(); 303 } 304 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 305 card->state = CARD_STATE_SOFTSETUP; 306 } 307 if (card->state == CARD_STATE_SOFTSETUP) { 308 qeth_l2_del_all_macs(card); 309 qeth_clear_ipacmd_list(card); 310 card->state = CARD_STATE_HARDSETUP; 311 } 312 if (card->state == CARD_STATE_HARDSETUP) { 313 qeth_qdio_clear_card(card, 0); 314 qeth_clear_qdio_buffers(card); 315 qeth_clear_working_pool_list(card); 316 card->state = CARD_STATE_DOWN; 317 } 318 if (card->state == CARD_STATE_DOWN) { 319 qeth_clear_cmd_buffers(&card->read); 320 qeth_clear_cmd_buffers(&card->write); 321 } 322 323 flush_workqueue(card->event_wq); 324 } 325 326 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 327 int budget, int *done) 328 { 329 int work_done = 0; 330 struct sk_buff *skb; 331 struct qeth_hdr *hdr; 332 unsigned int len; 333 334 *done = 0; 335 WARN_ON_ONCE(!budget); 336 while (budget) { 337 skb = qeth_core_get_next_skb(card, 338 &card->qdio.in_q->bufs[card->rx.b_index], 339 &card->rx.b_element, &card->rx.e_offset, &hdr); 340 if (!skb) { 341 *done = 1; 342 break; 343 } 344 switch (hdr->hdr.l2.id) { 345 case QETH_HEADER_TYPE_LAYER2: 346 skb->protocol = eth_type_trans(skb, skb->dev); 347 qeth_rx_csum(card, skb, hdr->hdr.l2.flags[1]); 348 if (skb->protocol == htons(ETH_P_802_2)) 349 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 350 len = skb->len; 351 napi_gro_receive(&card->napi, skb); 352 break; 353 case QETH_HEADER_TYPE_OSN: 354 if (card->info.type == QETH_CARD_TYPE_OSN) { 355 skb_push(skb, sizeof(struct qeth_hdr)); 356 skb_copy_to_linear_data(skb, hdr, 357 sizeof(struct qeth_hdr)); 358 len = skb->len; 359 card->osn_info.data_cb(skb); 360 break; 361 } 362 /* else unknown */ 363 default: 364 dev_kfree_skb_any(skb); 365 QETH_CARD_TEXT(card, 3, "inbunkno"); 366 QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr)); 367 continue; 368 } 369 work_done++; 370 budget--; 371 QETH_CARD_STAT_INC(card, rx_packets); 372 QETH_CARD_STAT_ADD(card, rx_bytes, len); 373 } 374 return work_done; 375 } 376 377 static int qeth_l2_request_initial_mac(struct qeth_card *card) 378 { 379 int rc = 0; 380 381 QETH_DBF_TEXT(SETUP, 2, "l2reqmac"); 382 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 383 384 if (MACHINE_IS_VM) { 385 rc = qeth_vm_request_mac(card); 386 if (!rc) 387 goto out; 388 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n", 389 CARD_DEVID(card), rc); 390 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc); 391 /* fall back to alternative mechanism: */ 392 } 393 394 if (!IS_OSN(card)) { 395 rc = qeth_setadpparms_change_macaddr(card); 396 if (!rc) 397 goto out; 398 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n", 399 CARD_DEVID(card), rc); 400 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 401 /* fall back once more: */ 402 } 403 404 /* some devices don't support a custom MAC address: */ 405 if (card->info.type == QETH_CARD_TYPE_OSM || 406 card->info.type == QETH_CARD_TYPE_OSX) 407 return (rc) ? rc : -EADDRNOTAVAIL; 408 eth_hw_addr_random(card->dev); 409 410 out: 411 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len); 412 return 0; 413 } 414 415 static void qeth_l2_register_dev_addr(struct qeth_card *card) 416 { 417 if (!is_valid_ether_addr(card->dev->dev_addr)) 418 qeth_l2_request_initial_mac(card); 419 420 if (!IS_OSN(card) && !qeth_l2_send_setmac(card, card->dev->dev_addr)) 421 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 422 } 423 424 static int qeth_l2_validate_addr(struct net_device *dev) 425 { 426 struct qeth_card *card = dev->ml_priv; 427 428 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) 429 return eth_validate_addr(dev); 430 431 QETH_CARD_TEXT(card, 4, "nomacadr"); 432 return -EPERM; 433 } 434 435 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 436 { 437 struct sockaddr *addr = p; 438 struct qeth_card *card = dev->ml_priv; 439 u8 old_addr[ETH_ALEN]; 440 int rc = 0; 441 442 QETH_CARD_TEXT(card, 3, "setmac"); 443 444 if (IS_OSM(card) || IS_OSX(card)) { 445 QETH_CARD_TEXT(card, 3, "setmcTYP"); 446 return -EOPNOTSUPP; 447 } 448 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 449 if (!is_valid_ether_addr(addr->sa_data)) 450 return -EADDRNOTAVAIL; 451 452 /* don't register the same address twice */ 453 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) && 454 (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 455 return 0; 456 457 /* add the new address, switch over, drop the old */ 458 rc = qeth_l2_send_setmac(card, addr->sa_data); 459 if (rc) 460 return rc; 461 ether_addr_copy(old_addr, dev->dev_addr); 462 ether_addr_copy(dev->dev_addr, addr->sa_data); 463 464 if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) 465 qeth_l2_remove_mac(card, old_addr); 466 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 467 return 0; 468 } 469 470 static void qeth_promisc_to_bridge(struct qeth_card *card) 471 { 472 struct net_device *dev = card->dev; 473 enum qeth_ipa_promisc_modes promisc_mode; 474 int role; 475 int rc; 476 477 QETH_CARD_TEXT(card, 3, "pmisc2br"); 478 479 if (!card->options.sbp.reflect_promisc) 480 return; 481 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 482 : SET_PROMISC_MODE_OFF; 483 if (promisc_mode == card->info.promisc_mode) 484 return; 485 486 if (promisc_mode == SET_PROMISC_MODE_ON) { 487 if (card->options.sbp.reflect_promisc_primary) 488 role = QETH_SBP_ROLE_PRIMARY; 489 else 490 role = QETH_SBP_ROLE_SECONDARY; 491 } else 492 role = QETH_SBP_ROLE_NONE; 493 494 rc = qeth_bridgeport_setrole(card, role); 495 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 496 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 497 if (!rc) { 498 card->options.sbp.role = role; 499 card->info.promisc_mode = promisc_mode; 500 } 501 502 } 503 /* New MAC address is added to the hash table and marked to be written on card 504 * only if there is not in the hash table storage already 505 * 506 */ 507 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 508 { 509 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 510 struct qeth_mac *mac; 511 512 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 513 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 514 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 515 return; 516 } 517 } 518 519 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 520 if (!mac) 521 return; 522 523 ether_addr_copy(mac->mac_addr, ha->addr); 524 mac->disp_flag = QETH_DISP_ADDR_ADD; 525 526 hash_add(card->mac_htable, &mac->hnode, mac_hash); 527 } 528 529 static void qeth_l2_set_rx_mode(struct net_device *dev) 530 { 531 struct qeth_card *card = dev->ml_priv; 532 struct netdev_hw_addr *ha; 533 struct qeth_mac *mac; 534 struct hlist_node *tmp; 535 int i; 536 int rc; 537 538 QETH_CARD_TEXT(card, 3, "setmulti"); 539 540 spin_lock_bh(&card->mclock); 541 542 netdev_for_each_mc_addr(ha, dev) 543 qeth_l2_add_mac(card, ha); 544 netdev_for_each_uc_addr(ha, dev) 545 qeth_l2_add_mac(card, ha); 546 547 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 548 switch (mac->disp_flag) { 549 case QETH_DISP_ADDR_DELETE: 550 qeth_l2_remove_mac(card, mac->mac_addr); 551 hash_del(&mac->hnode); 552 kfree(mac); 553 break; 554 case QETH_DISP_ADDR_ADD: 555 rc = qeth_l2_write_mac(card, mac->mac_addr); 556 if (rc) { 557 hash_del(&mac->hnode); 558 kfree(mac); 559 break; 560 } 561 /* fall through */ 562 default: 563 /* for next call to set_rx_mode(): */ 564 mac->disp_flag = QETH_DISP_ADDR_DELETE; 565 } 566 } 567 568 spin_unlock_bh(&card->mclock); 569 570 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 571 qeth_setadp_promisc_mode(card); 572 else 573 qeth_promisc_to_bridge(card); 574 } 575 576 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 577 struct qeth_qdio_out_q *queue) 578 { 579 struct qeth_hdr *hdr = (struct qeth_hdr *)skb->data; 580 addr_t end = (addr_t)(skb->data + sizeof(*hdr)); 581 addr_t start = (addr_t)skb->data; 582 unsigned int elements = 0; 583 unsigned int hd_len = 0; 584 int rc; 585 586 if (skb->protocol == htons(ETH_P_IPV6)) 587 return -EPROTONOSUPPORT; 588 589 if (qeth_get_elements_for_range(start, end) > 1) { 590 /* Misaligned HW header, move it to its own buffer element. */ 591 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 592 if (!hdr) 593 return -ENOMEM; 594 hd_len = sizeof(*hdr); 595 skb_copy_from_linear_data(skb, (char *)hdr, hd_len); 596 elements++; 597 } 598 599 elements += qeth_count_elements(skb, hd_len); 600 if (elements > QETH_MAX_BUFFER_ELEMENTS(card)) { 601 rc = -E2BIG; 602 goto out; 603 } 604 605 rc = qeth_do_send_packet(card, queue, skb, hdr, hd_len, hd_len, 606 elements); 607 out: 608 if (rc && hd_len) 609 kmem_cache_free(qeth_core_header_cache, hdr); 610 return rc; 611 } 612 613 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 614 struct net_device *dev) 615 { 616 struct qeth_card *card = dev->ml_priv; 617 int cast_type = qeth_l2_get_cast_type(card, skb); 618 int ipv = qeth_get_ip_version(skb); 619 struct qeth_qdio_out_q *queue; 620 int tx_bytes = skb->len; 621 int rc; 622 623 queue = qeth_get_tx_queue(card, skb, ipv, cast_type); 624 625 if (card->state != CARD_STATE_UP) { 626 QETH_TXQ_STAT_INC(queue, tx_carrier_errors); 627 goto tx_drop; 628 } 629 630 netif_stop_queue(dev); 631 632 if (IS_OSN(card)) 633 rc = qeth_l2_xmit_osn(card, skb, queue); 634 else 635 rc = qeth_xmit(card, skb, queue, ipv, cast_type, 636 qeth_l2_fill_header); 637 638 if (!rc) { 639 QETH_TXQ_STAT_INC(queue, tx_packets); 640 QETH_TXQ_STAT_ADD(queue, tx_bytes, tx_bytes); 641 netif_wake_queue(dev); 642 return NETDEV_TX_OK; 643 } else if (rc == -EBUSY) { 644 return NETDEV_TX_BUSY; 645 } /* else fall through */ 646 647 tx_drop: 648 QETH_TXQ_STAT_INC(queue, tx_dropped); 649 QETH_TXQ_STAT_INC(queue, tx_errors); 650 dev_kfree_skb_any(skb); 651 netif_wake_queue(dev); 652 return NETDEV_TX_OK; 653 } 654 655 static const struct device_type qeth_l2_devtype = { 656 .name = "qeth_layer2", 657 .groups = qeth_l2_attr_groups, 658 }; 659 660 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 661 { 662 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 663 int rc; 664 665 if (gdev->dev.type == &qeth_generic_devtype) { 666 rc = qeth_l2_create_device_attributes(&gdev->dev); 667 if (rc) 668 return rc; 669 } 670 671 hash_init(card->mac_htable); 672 card->info.hwtrap = 0; 673 qeth_l2_vnicc_set_defaults(card); 674 return 0; 675 } 676 677 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 678 { 679 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 680 681 if (cgdev->dev.type == &qeth_generic_devtype) 682 qeth_l2_remove_device_attributes(&cgdev->dev); 683 qeth_set_allowed_threads(card, 0, 1); 684 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 685 686 if (cgdev->state == CCWGROUP_ONLINE) 687 qeth_l2_set_offline(cgdev); 688 689 cancel_work_sync(&card->close_dev_work); 690 if (qeth_netdev_is_registered(card->dev)) 691 unregister_netdev(card->dev); 692 } 693 694 static const struct net_device_ops qeth_l2_netdev_ops = { 695 .ndo_open = qeth_open, 696 .ndo_stop = qeth_stop, 697 .ndo_get_stats64 = qeth_get_stats64, 698 .ndo_start_xmit = qeth_l2_hard_start_xmit, 699 .ndo_features_check = qeth_features_check, 700 .ndo_validate_addr = qeth_l2_validate_addr, 701 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 702 .ndo_do_ioctl = qeth_do_ioctl, 703 .ndo_set_mac_address = qeth_l2_set_mac_address, 704 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 705 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 706 .ndo_tx_timeout = qeth_tx_timeout, 707 .ndo_fix_features = qeth_fix_features, 708 .ndo_set_features = qeth_set_features 709 }; 710 711 static const struct net_device_ops qeth_osn_netdev_ops = { 712 .ndo_open = qeth_open, 713 .ndo_stop = qeth_stop, 714 .ndo_get_stats64 = qeth_get_stats64, 715 .ndo_start_xmit = qeth_l2_hard_start_xmit, 716 .ndo_validate_addr = eth_validate_addr, 717 .ndo_tx_timeout = qeth_tx_timeout, 718 }; 719 720 static int qeth_l2_setup_netdev(struct qeth_card *card, bool carrier_ok) 721 { 722 int rc; 723 724 if (IS_OSN(card)) { 725 card->dev->netdev_ops = &qeth_osn_netdev_ops; 726 card->dev->flags |= IFF_NOARP; 727 goto add_napi; 728 } 729 730 card->dev->needed_headroom = sizeof(struct qeth_hdr); 731 card->dev->netdev_ops = &qeth_l2_netdev_ops; 732 card->dev->priv_flags |= IFF_UNICAST_FLT; 733 734 if (IS_OSM(card)) { 735 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 736 } else { 737 if (!IS_VM_NIC(card)) 738 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 739 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 740 } 741 742 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 743 card->dev->features |= NETIF_F_SG; 744 /* OSA 3S and earlier has no RX/TX support */ 745 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 746 card->dev->hw_features |= NETIF_F_IP_CSUM; 747 card->dev->vlan_features |= NETIF_F_IP_CSUM; 748 } 749 } 750 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 751 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 752 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 753 } 754 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) || 755 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) { 756 card->dev->hw_features |= NETIF_F_RXCSUM; 757 card->dev->vlan_features |= NETIF_F_RXCSUM; 758 } 759 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 760 card->dev->hw_features |= NETIF_F_TSO; 761 card->dev->vlan_features |= NETIF_F_TSO; 762 } 763 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 764 card->dev->hw_features |= NETIF_F_TSO6; 765 card->dev->vlan_features |= NETIF_F_TSO6; 766 } 767 768 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) { 769 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso); 770 netif_set_gso_max_size(card->dev, 771 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)); 772 } 773 774 add_napi: 775 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 776 rc = register_netdev(card->dev); 777 if (!rc && carrier_ok) 778 netif_carrier_on(card->dev); 779 780 if (rc) 781 card->dev->netdev_ops = NULL; 782 return rc; 783 } 784 785 static int qeth_l2_start_ipassists(struct qeth_card *card) 786 { 787 /* configure isolation level */ 788 if (qeth_set_access_ctrl_online(card, 0)) 789 return -ENODEV; 790 return 0; 791 } 792 793 static void qeth_l2_trace_features(struct qeth_card *card) 794 { 795 /* Set BridgePort features */ 796 QETH_CARD_TEXT(card, 2, "featuSBP"); 797 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 798 sizeof(card->options.sbp.supported_funcs)); 799 /* VNIC Characteristics features */ 800 QETH_CARD_TEXT(card, 2, "feaVNICC"); 801 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 802 sizeof(card->options.vnicc.sup_chars)); 803 } 804 805 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 806 { 807 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 808 struct net_device *dev = card->dev; 809 int rc = 0; 810 enum qeth_card_states recover_flag; 811 bool carrier_ok; 812 813 mutex_lock(&card->discipline_mutex); 814 mutex_lock(&card->conf_mutex); 815 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 816 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 817 818 recover_flag = card->state; 819 rc = qeth_core_hardsetup_card(card, &carrier_ok); 820 if (rc) { 821 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 822 rc = -ENODEV; 823 goto out_remove; 824 } 825 qeth_bridgeport_query_support(card); 826 if (card->options.sbp.supported_funcs) 827 dev_info(&card->gdev->dev, 828 "The device represents a Bridge Capable Port\n"); 829 830 qeth_l2_register_dev_addr(card); 831 832 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 833 if (card->info.hwtrap && 834 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 835 card->info.hwtrap = 0; 836 } else 837 card->info.hwtrap = 0; 838 839 /* for the rx_bcast characteristic, init VNICC after setmac */ 840 qeth_l2_vnicc_init(card); 841 842 qeth_trace_features(card); 843 qeth_l2_trace_features(card); 844 845 qeth_l2_setup_bridgeport_attrs(card); 846 847 card->state = CARD_STATE_HARDSETUP; 848 qeth_print_status_message(card); 849 850 /* softsetup */ 851 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 852 853 if ((card->info.type == QETH_CARD_TYPE_OSD) || 854 (card->info.type == QETH_CARD_TYPE_OSX)) { 855 rc = qeth_l2_start_ipassists(card); 856 if (rc) 857 goto out_remove; 858 } 859 860 rc = qeth_init_qdio_queues(card); 861 if (rc) { 862 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 863 rc = -ENODEV; 864 goto out_remove; 865 } 866 card->state = CARD_STATE_SOFTSETUP; 867 868 qeth_set_allowed_threads(card, 0xffffffff, 0); 869 870 if (!qeth_netdev_is_registered(dev)) { 871 rc = qeth_l2_setup_netdev(card, carrier_ok); 872 if (rc) 873 goto out_remove; 874 } else { 875 rtnl_lock(); 876 if (carrier_ok) 877 netif_carrier_on(dev); 878 else 879 netif_carrier_off(dev); 880 881 netif_device_attach(dev); 882 qeth_enable_hw_features(dev); 883 884 if (recover_flag == CARD_STATE_RECOVER) { 885 if (recovery_mode && !IS_OSN(card)) { 886 if (!qeth_l2_validate_addr(dev)) { 887 qeth_open(dev); 888 qeth_l2_set_rx_mode(dev); 889 } 890 } else { 891 dev_open(dev, NULL); 892 } 893 } 894 rtnl_unlock(); 895 } 896 /* let user_space know that device is online */ 897 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 898 mutex_unlock(&card->conf_mutex); 899 mutex_unlock(&card->discipline_mutex); 900 return 0; 901 902 out_remove: 903 qeth_l2_stop_card(card, 0); 904 ccw_device_set_offline(CARD_DDEV(card)); 905 ccw_device_set_offline(CARD_WDEV(card)); 906 ccw_device_set_offline(CARD_RDEV(card)); 907 qdio_free(CARD_DDEV(card)); 908 if (recover_flag == CARD_STATE_RECOVER) 909 card->state = CARD_STATE_RECOVER; 910 else 911 card->state = CARD_STATE_DOWN; 912 mutex_unlock(&card->conf_mutex); 913 mutex_unlock(&card->discipline_mutex); 914 return rc; 915 } 916 917 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 918 { 919 return __qeth_l2_set_online(gdev, 0); 920 } 921 922 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 923 int recovery_mode) 924 { 925 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 926 int rc = 0, rc2 = 0, rc3 = 0; 927 enum qeth_card_states recover_flag; 928 929 mutex_lock(&card->discipline_mutex); 930 mutex_lock(&card->conf_mutex); 931 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 932 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 933 934 rtnl_lock(); 935 netif_device_detach(card->dev); 936 netif_carrier_off(card->dev); 937 rtnl_unlock(); 938 939 recover_flag = card->state; 940 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 941 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 942 card->info.hwtrap = 1; 943 } 944 qeth_l2_stop_card(card, recovery_mode); 945 rc = ccw_device_set_offline(CARD_DDEV(card)); 946 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 947 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 948 if (!rc) 949 rc = (rc2) ? rc2 : rc3; 950 if (rc) 951 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 952 qdio_free(CARD_DDEV(card)); 953 if (recover_flag == CARD_STATE_UP) 954 card->state = CARD_STATE_RECOVER; 955 /* let user_space know that device is offline */ 956 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 957 mutex_unlock(&card->conf_mutex); 958 mutex_unlock(&card->discipline_mutex); 959 return 0; 960 } 961 962 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 963 { 964 return __qeth_l2_set_offline(cgdev, 0); 965 } 966 967 static int qeth_l2_recover(void *ptr) 968 { 969 struct qeth_card *card; 970 int rc = 0; 971 972 card = (struct qeth_card *) ptr; 973 QETH_CARD_TEXT(card, 2, "recover1"); 974 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 975 return 0; 976 QETH_CARD_TEXT(card, 2, "recover2"); 977 dev_warn(&card->gdev->dev, 978 "A recovery process has been started for the device\n"); 979 __qeth_l2_set_offline(card->gdev, 1); 980 rc = __qeth_l2_set_online(card->gdev, 1); 981 if (!rc) 982 dev_info(&card->gdev->dev, 983 "Device successfully recovered!\n"); 984 else { 985 qeth_close_dev(card); 986 dev_warn(&card->gdev->dev, "The qeth device driver " 987 "failed to recover an error on the device\n"); 988 } 989 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 990 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 991 return 0; 992 } 993 994 static int __init qeth_l2_init(void) 995 { 996 pr_info("register layer 2 discipline\n"); 997 return 0; 998 } 999 1000 static void __exit qeth_l2_exit(void) 1001 { 1002 pr_info("unregister layer 2 discipline\n"); 1003 } 1004 1005 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1006 { 1007 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1008 1009 qeth_set_allowed_threads(card, 0, 1); 1010 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1011 if (gdev->state == CCWGROUP_OFFLINE) 1012 return 0; 1013 if (card->state == CARD_STATE_UP) { 1014 if (card->info.hwtrap) 1015 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1016 __qeth_l2_set_offline(card->gdev, 1); 1017 } else 1018 __qeth_l2_set_offline(card->gdev, 0); 1019 return 0; 1020 } 1021 1022 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1023 { 1024 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1025 int rc = 0; 1026 1027 if (card->state == CARD_STATE_RECOVER) { 1028 rc = __qeth_l2_set_online(card->gdev, 1); 1029 if (rc) { 1030 rtnl_lock(); 1031 dev_close(card->dev); 1032 rtnl_unlock(); 1033 } 1034 } else 1035 rc = __qeth_l2_set_online(card->gdev, 0); 1036 1037 qeth_set_allowed_threads(card, 0xffffffff, 0); 1038 if (rc) 1039 dev_warn(&card->gdev->dev, "The qeth device driver " 1040 "failed to recover an error on the device\n"); 1041 return rc; 1042 } 1043 1044 /* Returns zero if the command is successfully "consumed" */ 1045 static int qeth_l2_control_event(struct qeth_card *card, 1046 struct qeth_ipa_cmd *cmd) 1047 { 1048 switch (cmd->hdr.command) { 1049 case IPA_CMD_SETBRIDGEPORT_OSA: 1050 case IPA_CMD_SETBRIDGEPORT_IQD: 1051 if (cmd->data.sbp.hdr.command_code == 1052 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1053 qeth_bridge_state_change(card, cmd); 1054 return 0; 1055 } else 1056 return 1; 1057 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1058 qeth_bridge_host_event(card, cmd); 1059 return 0; 1060 default: 1061 return 1; 1062 } 1063 } 1064 1065 struct qeth_discipline qeth_l2_discipline = { 1066 .devtype = &qeth_l2_devtype, 1067 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1068 .recover = qeth_l2_recover, 1069 .setup = qeth_l2_probe_device, 1070 .remove = qeth_l2_remove_device, 1071 .set_online = qeth_l2_set_online, 1072 .set_offline = qeth_l2_set_offline, 1073 .freeze = qeth_l2_pm_suspend, 1074 .thaw = qeth_l2_pm_resume, 1075 .restore = qeth_l2_pm_resume, 1076 .do_ioctl = NULL, 1077 .control_event_handler = qeth_l2_control_event, 1078 }; 1079 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1080 1081 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1082 struct qeth_cmd_buffer *iob) 1083 { 1084 struct qeth_channel *channel = iob->channel; 1085 int rc = 0; 1086 1087 QETH_CARD_TEXT(card, 5, "osndctrd"); 1088 1089 wait_event(card->wait_q, 1090 atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); 1091 qeth_prepare_control_data(card, len, iob); 1092 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1093 spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); 1094 rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, 1095 (addr_t) iob, 0, 0, QETH_IPA_TIMEOUT); 1096 spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); 1097 if (rc) { 1098 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1099 "ccw_device_start rc = %i\n", rc); 1100 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1101 qeth_release_buffer(channel, iob); 1102 atomic_set(&channel->irq_pending, 0); 1103 wake_up(&card->wait_q); 1104 } 1105 return rc; 1106 } 1107 1108 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1109 struct qeth_cmd_buffer *iob) 1110 { 1111 u16 length; 1112 1113 QETH_CARD_TEXT(card, 4, "osndipa"); 1114 1115 memcpy(&length, QETH_IPA_PDU_LEN_TOTAL(iob->data), 2); 1116 return qeth_osn_send_control_data(card, length, iob); 1117 } 1118 1119 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1120 { 1121 struct qeth_cmd_buffer *iob; 1122 struct qeth_card *card; 1123 1124 if (!dev) 1125 return -ENODEV; 1126 card = dev->ml_priv; 1127 if (!card) 1128 return -ENODEV; 1129 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1130 if (!qeth_card_hw_is_reachable(card)) 1131 return -ENODEV; 1132 iob = qeth_wait_for_buffer(&card->write); 1133 qeth_prepare_ipa_cmd(card, iob, (u16) data_len); 1134 memcpy(__ipa_cmd(iob), data, data_len); 1135 return qeth_osn_send_ipa_cmd(card, iob); 1136 } 1137 EXPORT_SYMBOL(qeth_osn_assist); 1138 1139 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1140 int (*assist_cb)(struct net_device *, void *), 1141 int (*data_cb)(struct sk_buff *)) 1142 { 1143 struct qeth_card *card; 1144 char bus_id[16]; 1145 u16 devno; 1146 1147 memcpy(&devno, read_dev_no, 2); 1148 sprintf(bus_id, "0.0.%04x", devno); 1149 card = qeth_get_card_by_busid(bus_id); 1150 if (!card || !IS_OSN(card)) 1151 return -ENODEV; 1152 *dev = card->dev; 1153 1154 QETH_CARD_TEXT(card, 2, "osnreg"); 1155 if ((assist_cb == NULL) || (data_cb == NULL)) 1156 return -EINVAL; 1157 card->osn_info.assist_cb = assist_cb; 1158 card->osn_info.data_cb = data_cb; 1159 return 0; 1160 } 1161 EXPORT_SYMBOL(qeth_osn_register); 1162 1163 void qeth_osn_deregister(struct net_device *dev) 1164 { 1165 struct qeth_card *card; 1166 1167 if (!dev) 1168 return; 1169 card = dev->ml_priv; 1170 if (!card) 1171 return; 1172 QETH_CARD_TEXT(card, 2, "osndereg"); 1173 card->osn_info.assist_cb = NULL; 1174 card->osn_info.data_cb = NULL; 1175 return; 1176 } 1177 EXPORT_SYMBOL(qeth_osn_deregister); 1178 1179 /* SETBRIDGEPORT support, async notifications */ 1180 1181 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1182 1183 /** 1184 * qeth_bridge_emit_host_event() - bridgeport address change notification 1185 * @card: qeth_card structure pointer, for udev events. 1186 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1187 * and reset token and addr_lnid are unused and may be NULL. 1188 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1189 * object, 0 - addition of an object. 1190 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1191 * @token: "network token" structure identifying physical address of the port. 1192 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1193 * 1194 * This function is called when registrations and deregistrations are 1195 * reported by the hardware, and also when notifications are enabled - 1196 * for all currently registered addresses. 1197 */ 1198 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1199 enum qeth_an_event_type evtype, 1200 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1201 { 1202 char str[7][32]; 1203 char *env[8]; 1204 int i = 0; 1205 1206 switch (evtype) { 1207 case anev_reg_unreg: 1208 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1209 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1210 ? "deregister" : "register"); 1211 env[i] = str[i]; i++; 1212 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1213 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1214 addr_lnid->lnid); 1215 env[i] = str[i]; i++; 1216 } 1217 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1218 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1219 addr_lnid->mac); 1220 env[i] = str[i]; i++; 1221 } 1222 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1223 token->cssid, token->ssid, token->devnum); 1224 env[i] = str[i]; i++; 1225 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1226 env[i] = str[i]; i++; 1227 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1228 token->chpid); 1229 env[i] = str[i]; i++; 1230 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1231 env[i] = str[i]; i++; 1232 break; 1233 case anev_abort: 1234 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1235 env[i] = str[i]; i++; 1236 break; 1237 case anev_reset: 1238 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1239 env[i] = str[i]; i++; 1240 break; 1241 } 1242 env[i] = NULL; 1243 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1244 } 1245 1246 struct qeth_bridge_state_data { 1247 struct work_struct worker; 1248 struct qeth_card *card; 1249 struct qeth_sbp_state_change qports; 1250 }; 1251 1252 static void qeth_bridge_state_change_worker(struct work_struct *work) 1253 { 1254 struct qeth_bridge_state_data *data = 1255 container_of(work, struct qeth_bridge_state_data, worker); 1256 /* We are only interested in the first entry - local port */ 1257 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1258 char env_locrem[32]; 1259 char env_role[32]; 1260 char env_state[32]; 1261 char *env[] = { 1262 env_locrem, 1263 env_role, 1264 env_state, 1265 NULL 1266 }; 1267 1268 /* Role should not change by itself, but if it did, */ 1269 /* information from the hardware is authoritative. */ 1270 mutex_lock(&data->card->conf_mutex); 1271 data->card->options.sbp.role = entry->role; 1272 mutex_unlock(&data->card->conf_mutex); 1273 1274 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1275 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1276 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1277 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1278 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1279 "<INVALID>"); 1280 snprintf(env_state, sizeof(env_state), "STATE=%s", 1281 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1282 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1283 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1284 "<INVALID>"); 1285 kobject_uevent_env(&data->card->gdev->dev.kobj, 1286 KOBJ_CHANGE, env); 1287 kfree(data); 1288 } 1289 1290 static void qeth_bridge_state_change(struct qeth_card *card, 1291 struct qeth_ipa_cmd *cmd) 1292 { 1293 struct qeth_sbp_state_change *qports = 1294 &cmd->data.sbp.data.state_change; 1295 struct qeth_bridge_state_data *data; 1296 int extrasize; 1297 1298 QETH_CARD_TEXT(card, 2, "brstchng"); 1299 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1300 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1301 return; 1302 } 1303 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1304 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1305 GFP_ATOMIC); 1306 if (!data) { 1307 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1308 return; 1309 } 1310 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1311 data->card = card; 1312 memcpy(&data->qports, qports, 1313 sizeof(struct qeth_sbp_state_change) + extrasize); 1314 queue_work(card->event_wq, &data->worker); 1315 } 1316 1317 struct qeth_bridge_host_data { 1318 struct work_struct worker; 1319 struct qeth_card *card; 1320 struct qeth_ipacmd_addr_change hostevs; 1321 }; 1322 1323 static void qeth_bridge_host_event_worker(struct work_struct *work) 1324 { 1325 struct qeth_bridge_host_data *data = 1326 container_of(work, struct qeth_bridge_host_data, worker); 1327 int i; 1328 1329 if (data->hostevs.lost_event_mask) { 1330 dev_info(&data->card->gdev->dev, 1331 "Address notification from the Bridge Port stopped %s (%s)\n", 1332 data->card->dev->name, 1333 (data->hostevs.lost_event_mask == 0x01) 1334 ? "Overflow" 1335 : (data->hostevs.lost_event_mask == 0x02) 1336 ? "Bridge port state change" 1337 : "Unknown reason"); 1338 mutex_lock(&data->card->conf_mutex); 1339 data->card->options.sbp.hostnotification = 0; 1340 mutex_unlock(&data->card->conf_mutex); 1341 qeth_bridge_emit_host_event(data->card, anev_abort, 1342 0, NULL, NULL); 1343 } else 1344 for (i = 0; i < data->hostevs.num_entries; i++) { 1345 struct qeth_ipacmd_addr_change_entry *entry = 1346 &data->hostevs.entry[i]; 1347 qeth_bridge_emit_host_event(data->card, 1348 anev_reg_unreg, 1349 entry->change_code, 1350 &entry->token, &entry->addr_lnid); 1351 } 1352 kfree(data); 1353 } 1354 1355 static void qeth_bridge_host_event(struct qeth_card *card, 1356 struct qeth_ipa_cmd *cmd) 1357 { 1358 struct qeth_ipacmd_addr_change *hostevs = 1359 &cmd->data.addrchange; 1360 struct qeth_bridge_host_data *data; 1361 int extrasize; 1362 1363 QETH_CARD_TEXT(card, 2, "brhostev"); 1364 if (cmd->hdr.return_code != 0x0000) { 1365 if (cmd->hdr.return_code == 0x0010) { 1366 if (hostevs->lost_event_mask == 0x00) 1367 hostevs->lost_event_mask = 0xff; 1368 } else { 1369 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1370 cmd->hdr.return_code); 1371 return; 1372 } 1373 } 1374 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1375 hostevs->num_entries; 1376 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1377 GFP_ATOMIC); 1378 if (!data) { 1379 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1380 return; 1381 } 1382 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1383 data->card = card; 1384 memcpy(&data->hostevs, hostevs, 1385 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1386 queue_work(card->event_wq, &data->worker); 1387 } 1388 1389 /* SETBRIDGEPORT support; sending commands */ 1390 1391 struct _qeth_sbp_cbctl { 1392 union { 1393 u32 supported; 1394 struct { 1395 enum qeth_sbp_roles *role; 1396 enum qeth_sbp_states *state; 1397 } qports; 1398 } data; 1399 }; 1400 1401 static int qeth_bridgeport_makerc(struct qeth_card *card, 1402 struct qeth_ipa_cmd *cmd) 1403 { 1404 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp; 1405 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code; 1406 u16 ipa_rc = cmd->hdr.return_code; 1407 u16 sbp_rc = sbp->hdr.return_code; 1408 int rc; 1409 1410 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS) 1411 return 0; 1412 1413 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) || 1414 (!IS_IQD(card) && ipa_rc == sbp_rc)) { 1415 switch (sbp_rc) { 1416 case IPA_RC_SUCCESS: 1417 rc = 0; 1418 break; 1419 case IPA_RC_L2_UNSUPPORTED_CMD: 1420 case IPA_RC_UNSUPPORTED_COMMAND: 1421 rc = -EOPNOTSUPP; 1422 break; 1423 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1424 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1425 rc = -ENODEV; /* maybe not the best code here? */ 1426 dev_err(&card->gdev->dev, 1427 "The device is not configured as a Bridge Port\n"); 1428 break; 1429 case IPA_RC_SBP_OSA_OS_MISMATCH: 1430 case IPA_RC_SBP_IQD_OS_MISMATCH: 1431 rc = -EPERM; 1432 dev_err(&card->gdev->dev, 1433 "A Bridge Port is already configured by a different operating system\n"); 1434 break; 1435 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1436 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1437 switch (setcmd) { 1438 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1439 rc = -EEXIST; 1440 dev_err(&card->gdev->dev, 1441 "The LAN already has a primary Bridge Port\n"); 1442 break; 1443 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1444 rc = -EBUSY; 1445 dev_err(&card->gdev->dev, 1446 "The device is already a primary Bridge Port\n"); 1447 break; 1448 default: 1449 rc = -EIO; 1450 } 1451 break; 1452 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1453 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1454 rc = -EBUSY; 1455 dev_err(&card->gdev->dev, 1456 "The device is already a secondary Bridge Port\n"); 1457 break; 1458 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1459 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1460 rc = -EEXIST; 1461 dev_err(&card->gdev->dev, 1462 "The LAN cannot have more secondary Bridge Ports\n"); 1463 break; 1464 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1465 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1466 rc = -EBUSY; 1467 dev_err(&card->gdev->dev, 1468 "The device is already a primary Bridge Port\n"); 1469 break; 1470 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1471 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1472 rc = -EACCES; 1473 dev_err(&card->gdev->dev, 1474 "The device is not authorized to be a Bridge Port\n"); 1475 break; 1476 default: 1477 rc = -EIO; 1478 } 1479 } else { 1480 switch (ipa_rc) { 1481 case IPA_RC_NOTSUPP: 1482 rc = -EOPNOTSUPP; 1483 break; 1484 case IPA_RC_UNSUPPORTED_COMMAND: 1485 rc = -EOPNOTSUPP; 1486 break; 1487 default: 1488 rc = -EIO; 1489 } 1490 } 1491 1492 if (rc) { 1493 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc); 1494 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc); 1495 } 1496 return rc; 1497 } 1498 1499 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1500 enum qeth_ipa_sbp_cmd sbp_cmd, 1501 unsigned int cmd_length) 1502 { 1503 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ? 1504 IPA_CMD_SETBRIDGEPORT_IQD : 1505 IPA_CMD_SETBRIDGEPORT_OSA; 1506 struct qeth_cmd_buffer *iob; 1507 struct qeth_ipa_cmd *cmd; 1508 1509 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0); 1510 if (!iob) 1511 return iob; 1512 cmd = __ipa_cmd(iob); 1513 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1514 cmd_length; 1515 cmd->data.sbp.hdr.command_code = sbp_cmd; 1516 cmd->data.sbp.hdr.used_total = 1; 1517 cmd->data.sbp.hdr.seq_no = 1; 1518 return iob; 1519 } 1520 1521 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1522 struct qeth_reply *reply, unsigned long data) 1523 { 1524 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1525 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1526 int rc; 1527 1528 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1529 rc = qeth_bridgeport_makerc(card, cmd); 1530 if (rc) 1531 return rc; 1532 1533 cbctl->data.supported = 1534 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1535 return 0; 1536 } 1537 1538 /** 1539 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1540 * @card: qeth_card structure pointer. 1541 * 1542 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1543 * strucutre: card->options.sbp.supported_funcs. 1544 */ 1545 static void qeth_bridgeport_query_support(struct qeth_card *card) 1546 { 1547 struct qeth_cmd_buffer *iob; 1548 struct _qeth_sbp_cbctl cbctl; 1549 1550 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1551 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1552 sizeof(struct qeth_sbp_query_cmds_supp)); 1553 if (!iob) 1554 return; 1555 1556 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1557 &cbctl)) { 1558 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1559 card->options.sbp.supported_funcs = 0; 1560 return; 1561 } 1562 card->options.sbp.supported_funcs = cbctl.data.supported; 1563 } 1564 1565 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1566 struct qeth_reply *reply, unsigned long data) 1567 { 1568 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1569 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1570 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1571 int rc; 1572 1573 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1574 rc = qeth_bridgeport_makerc(card, cmd); 1575 if (rc) 1576 return rc; 1577 1578 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1579 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1580 return -EINVAL; 1581 } 1582 /* first entry contains the state of the local port */ 1583 if (qports->num_entries > 0) { 1584 if (cbctl->data.qports.role) 1585 *cbctl->data.qports.role = qports->entry[0].role; 1586 if (cbctl->data.qports.state) 1587 *cbctl->data.qports.state = qports->entry[0].state; 1588 } 1589 return 0; 1590 } 1591 1592 /** 1593 * qeth_bridgeport_query_ports() - query local bridgeport status. 1594 * @card: qeth_card structure pointer. 1595 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1596 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1597 * 1598 * Returns negative errno-compatible error indication or 0 on success. 1599 * 1600 * 'role' and 'state' are not updated in case of hardware operation failure. 1601 */ 1602 int qeth_bridgeport_query_ports(struct qeth_card *card, 1603 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1604 { 1605 struct qeth_cmd_buffer *iob; 1606 struct _qeth_sbp_cbctl cbctl = { 1607 .data = { 1608 .qports = { 1609 .role = role, 1610 .state = state, 1611 }, 1612 }, 1613 }; 1614 1615 QETH_CARD_TEXT(card, 2, "brqports"); 1616 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1617 return -EOPNOTSUPP; 1618 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1619 if (!iob) 1620 return -ENOMEM; 1621 1622 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1623 &cbctl); 1624 } 1625 1626 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1627 struct qeth_reply *reply, unsigned long data) 1628 { 1629 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1630 1631 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1632 return qeth_bridgeport_makerc(card, cmd); 1633 } 1634 1635 /** 1636 * qeth_bridgeport_setrole() - Assign primary role to the port. 1637 * @card: qeth_card structure pointer. 1638 * @role: Role to assign. 1639 * 1640 * Returns negative errno-compatible error indication or 0 on success. 1641 */ 1642 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1643 { 1644 int cmdlength; 1645 struct qeth_cmd_buffer *iob; 1646 enum qeth_ipa_sbp_cmd setcmd; 1647 1648 QETH_CARD_TEXT(card, 2, "brsetrol"); 1649 switch (role) { 1650 case QETH_SBP_ROLE_NONE: 1651 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1652 cmdlength = sizeof(struct qeth_sbp_reset_role); 1653 break; 1654 case QETH_SBP_ROLE_PRIMARY: 1655 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1656 cmdlength = sizeof(struct qeth_sbp_set_primary); 1657 break; 1658 case QETH_SBP_ROLE_SECONDARY: 1659 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1660 cmdlength = sizeof(struct qeth_sbp_set_secondary); 1661 break; 1662 default: 1663 return -EINVAL; 1664 } 1665 if (!(card->options.sbp.supported_funcs & setcmd)) 1666 return -EOPNOTSUPP; 1667 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1668 if (!iob) 1669 return -ENOMEM; 1670 1671 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL); 1672 } 1673 1674 /** 1675 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1676 * @card: qeth_card structure pointer, for debug messages. 1677 * 1678 * Returns negative errno-compatible error indication or 0 on success. 1679 */ 1680 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1681 { 1682 int rc; 1683 1684 if (pnso_rc == 0) 1685 switch (response) { 1686 case 0x0001: 1687 rc = 0; 1688 break; 1689 case 0x0004: 1690 case 0x0100: 1691 case 0x0106: 1692 rc = -EOPNOTSUPP; 1693 dev_err(&card->gdev->dev, 1694 "Setting address notification failed\n"); 1695 break; 1696 case 0x0107: 1697 rc = -EAGAIN; 1698 break; 1699 default: 1700 rc = -EIO; 1701 } 1702 else 1703 rc = -EIO; 1704 1705 if (rc) { 1706 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1707 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1708 } 1709 return rc; 1710 } 1711 1712 static void qeth_bridgeport_an_set_cb(void *priv, 1713 enum qdio_brinfo_entry_type type, void *entry) 1714 { 1715 struct qeth_card *card = (struct qeth_card *)priv; 1716 struct qdio_brinfo_entry_l2 *l2entry; 1717 u8 code; 1718 1719 if (type != l2_addr_lnid) { 1720 WARN_ON_ONCE(1); 1721 return; 1722 } 1723 1724 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 1725 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1726 if (l2entry->addr_lnid.lnid) 1727 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1728 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1729 (struct net_if_token *)&l2entry->nit, 1730 (struct mac_addr_lnid *)&l2entry->addr_lnid); 1731 } 1732 1733 /** 1734 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1735 * @card: qeth_card structure pointer. 1736 * @enable: 0 - disable, non-zero - enable notifications 1737 * 1738 * Returns negative errno-compatible error indication or 0 on success. 1739 * 1740 * On enable, emits a series of address notifications udev events for all 1741 * currently registered hosts. 1742 */ 1743 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 1744 { 1745 int rc; 1746 u16 response; 1747 struct ccw_device *ddev; 1748 struct subchannel_id schid; 1749 1750 if (!card) 1751 return -EINVAL; 1752 if (!card->options.sbp.supported_funcs) 1753 return -EOPNOTSUPP; 1754 ddev = CARD_DDEV(card); 1755 ccw_device_get_schid(ddev, &schid); 1756 1757 if (enable) { 1758 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 1759 rc = qdio_pnso_brinfo(schid, 1, &response, 1760 qeth_bridgeport_an_set_cb, card); 1761 } else 1762 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 1763 return qeth_anset_makerc(card, rc, response); 1764 } 1765 1766 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 1767 { 1768 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 1769 card->options.sbp.hostnotification); 1770 } 1771 1772 /* VNIC Characteristics support */ 1773 1774 /* handle VNICC IPA command return codes; convert to error codes */ 1775 static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc) 1776 { 1777 int rc; 1778 1779 switch (ipa_rc) { 1780 case IPA_RC_SUCCESS: 1781 return ipa_rc; 1782 case IPA_RC_L2_UNSUPPORTED_CMD: 1783 case IPA_RC_NOTSUPP: 1784 rc = -EOPNOTSUPP; 1785 break; 1786 case IPA_RC_VNICC_OOSEQ: 1787 rc = -EALREADY; 1788 break; 1789 case IPA_RC_VNICC_VNICBP: 1790 rc = -EBUSY; 1791 break; 1792 case IPA_RC_L2_ADDR_TABLE_FULL: 1793 rc = -ENOSPC; 1794 break; 1795 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 1796 rc = -EACCES; 1797 break; 1798 default: 1799 rc = -EIO; 1800 } 1801 1802 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 1803 return rc; 1804 } 1805 1806 /* generic VNICC request call back control */ 1807 struct _qeth_l2_vnicc_request_cbctl { 1808 u32 sub_cmd; 1809 struct { 1810 u32 vnic_char; 1811 u32 timeout; 1812 } param; 1813 struct { 1814 union{ 1815 u32 *sup_cmds; 1816 u32 *timeout; 1817 }; 1818 } result; 1819 }; 1820 1821 /* generic VNICC request call back */ 1822 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 1823 struct qeth_reply *reply, 1824 unsigned long data) 1825 { 1826 struct _qeth_l2_vnicc_request_cbctl *cbctl = 1827 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 1828 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1829 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 1830 1831 QETH_CARD_TEXT(card, 2, "vniccrcb"); 1832 if (cmd->hdr.return_code) 1833 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code); 1834 /* return results to caller */ 1835 card->options.vnicc.sup_chars = rep->hdr.sup; 1836 card->options.vnicc.cur_chars = rep->hdr.cur; 1837 1838 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS) 1839 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds; 1840 1841 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT) 1842 *cbctl->result.timeout = rep->getset_timeout.timeout; 1843 1844 return 0; 1845 } 1846 1847 /* generic VNICC request */ 1848 static int qeth_l2_vnicc_request(struct qeth_card *card, 1849 struct _qeth_l2_vnicc_request_cbctl *cbctl) 1850 { 1851 struct qeth_ipacmd_vnicc *req; 1852 struct qeth_cmd_buffer *iob; 1853 struct qeth_ipa_cmd *cmd; 1854 1855 QETH_CARD_TEXT(card, 2, "vniccreq"); 1856 1857 /* get new buffer for request */ 1858 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0); 1859 if (!iob) 1860 return -ENOMEM; 1861 1862 /* create header for request */ 1863 cmd = __ipa_cmd(iob); 1864 req = &cmd->data.vnicc; 1865 1866 /* create sub command header for request */ 1867 req->sub_hdr.data_length = sizeof(req->sub_hdr); 1868 req->sub_hdr.sub_command = cbctl->sub_cmd; 1869 1870 /* create sub command specific request fields */ 1871 switch (cbctl->sub_cmd) { 1872 case IPA_VNICC_QUERY_CHARS: 1873 break; 1874 case IPA_VNICC_QUERY_CMDS: 1875 req->sub_hdr.data_length += sizeof(req->query_cmds); 1876 req->query_cmds.vnic_char = cbctl->param.vnic_char; 1877 break; 1878 case IPA_VNICC_ENABLE: 1879 case IPA_VNICC_DISABLE: 1880 req->sub_hdr.data_length += sizeof(req->set_char); 1881 req->set_char.vnic_char = cbctl->param.vnic_char; 1882 break; 1883 case IPA_VNICC_SET_TIMEOUT: 1884 req->getset_timeout.timeout = cbctl->param.timeout; 1885 /* fallthrough */ 1886 case IPA_VNICC_GET_TIMEOUT: 1887 req->sub_hdr.data_length += sizeof(req->getset_timeout); 1888 req->getset_timeout.vnic_char = cbctl->param.vnic_char; 1889 break; 1890 default: 1891 qeth_release_buffer(iob->channel, iob); 1892 return -EOPNOTSUPP; 1893 } 1894 1895 /* send request */ 1896 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, cbctl); 1897 } 1898 1899 /* VNICC query VNIC characteristics request */ 1900 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 1901 { 1902 struct _qeth_l2_vnicc_request_cbctl cbctl; 1903 1904 /* prepare callback control */ 1905 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS; 1906 1907 QETH_CARD_TEXT(card, 2, "vniccqch"); 1908 return qeth_l2_vnicc_request(card, &cbctl); 1909 } 1910 1911 /* VNICC query sub commands request */ 1912 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 1913 u32 *sup_cmds) 1914 { 1915 struct _qeth_l2_vnicc_request_cbctl cbctl; 1916 1917 /* prepare callback control */ 1918 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS; 1919 cbctl.param.vnic_char = vnic_char; 1920 cbctl.result.sup_cmds = sup_cmds; 1921 1922 QETH_CARD_TEXT(card, 2, "vniccqcm"); 1923 return qeth_l2_vnicc_request(card, &cbctl); 1924 } 1925 1926 /* VNICC enable/disable characteristic request */ 1927 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 1928 u32 cmd) 1929 { 1930 struct _qeth_l2_vnicc_request_cbctl cbctl; 1931 1932 /* prepare callback control */ 1933 cbctl.sub_cmd = cmd; 1934 cbctl.param.vnic_char = vnic_char; 1935 1936 QETH_CARD_TEXT(card, 2, "vniccedc"); 1937 return qeth_l2_vnicc_request(card, &cbctl); 1938 } 1939 1940 /* VNICC get/set timeout for characteristic request */ 1941 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 1942 u32 cmd, u32 *timeout) 1943 { 1944 struct _qeth_l2_vnicc_request_cbctl cbctl; 1945 1946 /* prepare callback control */ 1947 cbctl.sub_cmd = cmd; 1948 cbctl.param.vnic_char = vnicc; 1949 if (cmd == IPA_VNICC_SET_TIMEOUT) 1950 cbctl.param.timeout = *timeout; 1951 if (cmd == IPA_VNICC_GET_TIMEOUT) 1952 cbctl.result.timeout = timeout; 1953 1954 QETH_CARD_TEXT(card, 2, "vniccgst"); 1955 return qeth_l2_vnicc_request(card, &cbctl); 1956 } 1957 1958 /* set current VNICC flag state; called from sysfs store function */ 1959 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 1960 { 1961 int rc = 0; 1962 u32 cmd; 1963 1964 QETH_CARD_TEXT(card, 2, "vniccsch"); 1965 1966 /* do not change anything if BridgePort is enabled */ 1967 if (qeth_bridgeport_is_in_use(card)) 1968 return -EBUSY; 1969 1970 /* check if characteristic and enable/disable are supported */ 1971 if (!(card->options.vnicc.sup_chars & vnicc) || 1972 !(card->options.vnicc.set_char_sup & vnicc)) 1973 return -EOPNOTSUPP; 1974 1975 /* set enable/disable command and store wanted characteristic */ 1976 if (state) { 1977 cmd = IPA_VNICC_ENABLE; 1978 card->options.vnicc.wanted_chars |= vnicc; 1979 } else { 1980 cmd = IPA_VNICC_DISABLE; 1981 card->options.vnicc.wanted_chars &= ~vnicc; 1982 } 1983 1984 /* do we need to do anything? */ 1985 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 1986 return rc; 1987 1988 /* if card is not ready, simply stop here */ 1989 if (!qeth_card_hw_is_reachable(card)) { 1990 if (state) 1991 card->options.vnicc.cur_chars |= vnicc; 1992 else 1993 card->options.vnicc.cur_chars &= ~vnicc; 1994 return rc; 1995 } 1996 1997 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 1998 if (rc) 1999 card->options.vnicc.wanted_chars = 2000 card->options.vnicc.cur_chars; 2001 else { 2002 /* successful online VNICC change; handle special cases */ 2003 if (state && vnicc == QETH_VNICC_RX_BCAST) 2004 card->options.vnicc.rx_bcast_enabled = true; 2005 if (!state && vnicc == QETH_VNICC_LEARNING) 2006 qeth_l2_vnicc_recover_timeout(card, vnicc, 2007 &card->options.vnicc.learning_timeout); 2008 } 2009 2010 return rc; 2011 } 2012 2013 /* get current VNICC flag state; called from sysfs show function */ 2014 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 2015 { 2016 int rc = 0; 2017 2018 QETH_CARD_TEXT(card, 2, "vniccgch"); 2019 2020 /* do not get anything if BridgePort is enabled */ 2021 if (qeth_bridgeport_is_in_use(card)) 2022 return -EBUSY; 2023 2024 /* check if characteristic is supported */ 2025 if (!(card->options.vnicc.sup_chars & vnicc)) 2026 return -EOPNOTSUPP; 2027 2028 /* if card is ready, query current VNICC state */ 2029 if (qeth_card_hw_is_reachable(card)) 2030 rc = qeth_l2_vnicc_query_chars(card); 2031 2032 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 2033 return rc; 2034 } 2035 2036 /* set VNICC timeout; called from sysfs store function. Currently, only learning 2037 * supports timeout 2038 */ 2039 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 2040 { 2041 int rc = 0; 2042 2043 QETH_CARD_TEXT(card, 2, "vniccsto"); 2044 2045 /* do not change anything if BridgePort is enabled */ 2046 if (qeth_bridgeport_is_in_use(card)) 2047 return -EBUSY; 2048 2049 /* check if characteristic and set_timeout are supported */ 2050 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2051 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2052 return -EOPNOTSUPP; 2053 2054 /* do we need to do anything? */ 2055 if (card->options.vnicc.learning_timeout == timeout) 2056 return rc; 2057 2058 /* if card is not ready, simply store the value internally and return */ 2059 if (!qeth_card_hw_is_reachable(card)) { 2060 card->options.vnicc.learning_timeout = timeout; 2061 return rc; 2062 } 2063 2064 /* send timeout value to card; if successful, store value internally */ 2065 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2066 IPA_VNICC_SET_TIMEOUT, &timeout); 2067 if (!rc) 2068 card->options.vnicc.learning_timeout = timeout; 2069 2070 return rc; 2071 } 2072 2073 /* get current VNICC timeout; called from sysfs show function. Currently, only 2074 * learning supports timeout 2075 */ 2076 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 2077 { 2078 int rc = 0; 2079 2080 QETH_CARD_TEXT(card, 2, "vniccgto"); 2081 2082 /* do not get anything if BridgePort is enabled */ 2083 if (qeth_bridgeport_is_in_use(card)) 2084 return -EBUSY; 2085 2086 /* check if characteristic and get_timeout are supported */ 2087 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2088 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2089 return -EOPNOTSUPP; 2090 /* if card is ready, get timeout. Otherwise, just return stored value */ 2091 *timeout = card->options.vnicc.learning_timeout; 2092 if (qeth_card_hw_is_reachable(card)) 2093 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2094 IPA_VNICC_GET_TIMEOUT, 2095 timeout); 2096 2097 return rc; 2098 } 2099 2100 /* check if VNICC is currently enabled */ 2101 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 2102 { 2103 /* if everything is turned off, VNICC is not active */ 2104 if (!card->options.vnicc.cur_chars) 2105 return false; 2106 /* default values are only OK if rx_bcast was not enabled by user 2107 * or the card is offline. 2108 */ 2109 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 2110 if (!card->options.vnicc.rx_bcast_enabled || 2111 !qeth_card_hw_is_reachable(card)) 2112 return false; 2113 } 2114 return true; 2115 } 2116 2117 /* recover user timeout setting */ 2118 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 2119 u32 *timeout) 2120 { 2121 if (card->options.vnicc.sup_chars & vnicc && 2122 card->options.vnicc.getset_timeout_sup & vnicc && 2123 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 2124 timeout)) 2125 return false; 2126 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2127 return true; 2128 } 2129 2130 /* recover user characteristic setting */ 2131 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2132 bool enable) 2133 { 2134 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2135 2136 if (card->options.vnicc.sup_chars & vnicc && 2137 card->options.vnicc.set_char_sup & vnicc && 2138 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2139 return false; 2140 card->options.vnicc.wanted_chars &= ~vnicc; 2141 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2142 return true; 2143 } 2144 2145 /* (re-)initialize VNICC */ 2146 static void qeth_l2_vnicc_init(struct qeth_card *card) 2147 { 2148 u32 *timeout = &card->options.vnicc.learning_timeout; 2149 unsigned int chars_len, i; 2150 unsigned long chars_tmp; 2151 u32 sup_cmds, vnicc; 2152 bool enable, error; 2153 2154 QETH_CARD_TEXT(card, 2, "vniccini"); 2155 /* reset rx_bcast */ 2156 card->options.vnicc.rx_bcast_enabled = 0; 2157 /* initial query and storage of VNIC characteristics */ 2158 if (qeth_l2_vnicc_query_chars(card)) { 2159 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2160 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2161 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2162 /* fail quietly if user didn't change the default config */ 2163 card->options.vnicc.sup_chars = 0; 2164 card->options.vnicc.cur_chars = 0; 2165 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2166 return; 2167 } 2168 /* get supported commands for each supported characteristic */ 2169 chars_tmp = card->options.vnicc.sup_chars; 2170 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2171 for_each_set_bit(i, &chars_tmp, chars_len) { 2172 vnicc = BIT(i); 2173 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds); 2174 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) || 2175 !(sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2176 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2177 if (!(sup_cmds & IPA_VNICC_ENABLE) || 2178 !(sup_cmds & IPA_VNICC_DISABLE)) 2179 card->options.vnicc.set_char_sup &= ~vnicc; 2180 } 2181 /* enforce assumed default values and recover settings, if changed */ 2182 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2183 timeout); 2184 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; 2185 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; 2186 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2187 for_each_set_bit(i, &chars_tmp, chars_len) { 2188 vnicc = BIT(i); 2189 enable = card->options.vnicc.wanted_chars & vnicc; 2190 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2191 } 2192 if (error) 2193 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2194 } 2195 2196 /* configure default values of VNIC characteristics */ 2197 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2198 { 2199 /* characteristics values */ 2200 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2201 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2202 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2203 /* supported commands */ 2204 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2205 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2206 /* settings wanted by users */ 2207 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2208 } 2209 2210 module_init(qeth_l2_init); 2211 module_exit(qeth_l2_exit); 2212 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2213 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2214 MODULE_LICENSE("GPL"); 2215