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