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/if_bridge.h> 21 #include <linux/list.h> 22 #include <linux/hash.h> 23 #include <linux/hashtable.h> 24 #include <net/switchdev.h> 25 #include <asm/chsc.h> 26 #include <asm/css_chars.h> 27 #include <asm/setup.h> 28 #include "qeth_core.h" 29 #include "qeth_l2.h" 30 31 static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode) 32 { 33 int rc; 34 35 if (retcode) 36 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 37 switch (retcode) { 38 case IPA_RC_SUCCESS: 39 rc = 0; 40 break; 41 case IPA_RC_L2_UNSUPPORTED_CMD: 42 rc = -EOPNOTSUPP; 43 break; 44 case IPA_RC_L2_ADDR_TABLE_FULL: 45 rc = -ENOSPC; 46 break; 47 case IPA_RC_L2_DUP_MAC: 48 case IPA_RC_L2_DUP_LAYER3_MAC: 49 rc = -EADDRINUSE; 50 break; 51 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 52 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 53 rc = -EADDRNOTAVAIL; 54 break; 55 case IPA_RC_L2_MAC_NOT_FOUND: 56 rc = -ENOENT; 57 break; 58 default: 59 rc = -EIO; 60 break; 61 } 62 return rc; 63 } 64 65 static int qeth_l2_send_setdelmac_cb(struct qeth_card *card, 66 struct qeth_reply *reply, 67 unsigned long data) 68 { 69 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 70 71 return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code); 72 } 73 74 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 75 enum qeth_ipa_cmds ipacmd) 76 { 77 struct qeth_ipa_cmd *cmd; 78 struct qeth_cmd_buffer *iob; 79 80 QETH_CARD_TEXT(card, 2, "L2sdmac"); 81 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4, 82 IPA_DATA_SIZEOF(setdelmac)); 83 if (!iob) 84 return -ENOMEM; 85 cmd = __ipa_cmd(iob); 86 cmd->data.setdelmac.mac_length = ETH_ALEN; 87 ether_addr_copy(cmd->data.setdelmac.mac, mac); 88 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelmac_cb, NULL); 89 } 90 91 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 92 { 93 int rc; 94 95 QETH_CARD_TEXT(card, 2, "L2Setmac"); 96 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 97 if (rc == 0) { 98 dev_info(&card->gdev->dev, 99 "MAC address %pM successfully registered\n", mac); 100 } else { 101 switch (rc) { 102 case -EADDRINUSE: 103 dev_warn(&card->gdev->dev, 104 "MAC address %pM already exists\n", mac); 105 break; 106 case -EADDRNOTAVAIL: 107 dev_warn(&card->gdev->dev, 108 "MAC address %pM is not authorized\n", mac); 109 break; 110 } 111 } 112 return rc; 113 } 114 115 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) 116 { 117 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? 118 IPA_CMD_SETGMAC : IPA_CMD_SETVMAC; 119 int rc; 120 121 QETH_CARD_TEXT(card, 2, "L2Wmac"); 122 rc = qeth_l2_send_setdelmac(card, mac, cmd); 123 if (rc == -EADDRINUSE) 124 QETH_DBF_MESSAGE(2, "MAC already registered on device %x\n", 125 CARD_DEVID(card)); 126 else if (rc) 127 QETH_DBF_MESSAGE(2, "Failed to register MAC on device %x: %d\n", 128 CARD_DEVID(card), rc); 129 return rc; 130 } 131 132 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) 133 { 134 enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? 135 IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; 136 int rc; 137 138 QETH_CARD_TEXT(card, 2, "L2Rmac"); 139 rc = qeth_l2_send_setdelmac(card, mac, cmd); 140 if (rc) 141 QETH_DBF_MESSAGE(2, "Failed to delete MAC on device %u: %d\n", 142 CARD_DEVID(card), rc); 143 return rc; 144 } 145 146 static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card) 147 { 148 struct qeth_mac *mac; 149 struct hlist_node *tmp; 150 int i; 151 152 hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) { 153 hash_del(&mac->hnode); 154 kfree(mac); 155 } 156 } 157 158 static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue, 159 struct qeth_hdr *hdr, struct sk_buff *skb, 160 int ipv, unsigned int data_len) 161 { 162 int cast_type = qeth_get_ether_cast_type(skb); 163 struct vlan_ethhdr *veth = vlan_eth_hdr(skb); 164 165 hdr->hdr.l2.pkt_length = data_len; 166 167 if (skb_is_gso(skb)) { 168 hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO; 169 } else { 170 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 171 if (skb->ip_summed == CHECKSUM_PARTIAL) 172 qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv); 173 } 174 175 /* set byte byte 3 to casting flags */ 176 if (cast_type == RTN_MULTICAST) 177 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 178 else if (cast_type == RTN_BROADCAST) 179 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 180 else 181 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 182 183 /* VSWITCH relies on the VLAN 184 * information to be present in 185 * the QDIO header */ 186 if (veth->h_vlan_proto == htons(ETH_P_8021Q)) { 187 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 188 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 189 } 190 } 191 192 static int qeth_l2_setdelvlan_makerc(struct qeth_card *card, u16 retcode) 193 { 194 if (retcode) 195 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 196 197 switch (retcode) { 198 case IPA_RC_SUCCESS: 199 return 0; 200 case IPA_RC_L2_INVALID_VLAN_ID: 201 return -EINVAL; 202 case IPA_RC_L2_DUP_VLAN_ID: 203 return -EEXIST; 204 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 205 return -ENOENT; 206 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 207 return -EPERM; 208 default: 209 return -EIO; 210 } 211 } 212 213 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 214 struct qeth_reply *reply, 215 unsigned long data) 216 { 217 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 218 219 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 220 if (cmd->hdr.return_code) { 221 QETH_DBF_MESSAGE(2, "Error in processing VLAN %u on device %x: %#x.\n", 222 cmd->data.setdelvlan.vlan_id, 223 CARD_DEVID(card), cmd->hdr.return_code); 224 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 225 } 226 return qeth_l2_setdelvlan_makerc(card, cmd->hdr.return_code); 227 } 228 229 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 230 enum qeth_ipa_cmds ipacmd) 231 { 232 struct qeth_ipa_cmd *cmd; 233 struct qeth_cmd_buffer *iob; 234 235 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 236 iob = qeth_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4, 237 IPA_DATA_SIZEOF(setdelvlan)); 238 if (!iob) 239 return -ENOMEM; 240 cmd = __ipa_cmd(iob); 241 cmd->data.setdelvlan.vlan_id = i; 242 return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelvlan_cb, NULL); 243 } 244 245 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 246 __be16 proto, u16 vid) 247 { 248 struct qeth_card *card = dev->ml_priv; 249 250 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 251 if (!vid) 252 return 0; 253 254 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 255 } 256 257 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 258 __be16 proto, u16 vid) 259 { 260 struct qeth_card *card = dev->ml_priv; 261 262 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 263 if (!vid) 264 return 0; 265 266 return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 267 } 268 269 static void qeth_l2_set_pnso_mode(struct qeth_card *card, 270 enum qeth_pnso_mode mode) 271 { 272 spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); 273 WRITE_ONCE(card->info.pnso_mode, mode); 274 spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); 275 276 if (mode == QETH_PNSO_NONE) 277 drain_workqueue(card->event_wq); 278 } 279 280 static void qeth_l2_dev2br_fdb_flush(struct qeth_card *card) 281 { 282 struct switchdev_notifier_fdb_info info; 283 284 QETH_CARD_TEXT(card, 2, "fdbflush"); 285 286 info.addr = NULL; 287 /* flush all VLANs: */ 288 info.vid = 0; 289 info.added_by_user = false; 290 info.offloaded = true; 291 292 call_switchdev_notifiers(SWITCHDEV_FDB_FLUSH_TO_BRIDGE, 293 card->dev, &info.info, NULL); 294 } 295 296 static int qeth_l2_request_initial_mac(struct qeth_card *card) 297 { 298 int rc = 0; 299 300 QETH_CARD_TEXT(card, 2, "l2reqmac"); 301 302 if (MACHINE_IS_VM) { 303 rc = qeth_vm_request_mac(card); 304 if (!rc) 305 goto out; 306 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n", 307 CARD_DEVID(card), rc); 308 QETH_CARD_TEXT_(card, 2, "err%04x", rc); 309 /* fall back to alternative mechanism: */ 310 } 311 312 if (!IS_OSN(card)) { 313 rc = qeth_setadpparms_change_macaddr(card); 314 if (!rc) 315 goto out; 316 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n", 317 CARD_DEVID(card), rc); 318 QETH_CARD_TEXT_(card, 2, "1err%04x", rc); 319 /* fall back once more: */ 320 } 321 322 /* some devices don't support a custom MAC address: */ 323 if (IS_OSM(card) || IS_OSX(card)) 324 return (rc) ? rc : -EADDRNOTAVAIL; 325 eth_hw_addr_random(card->dev); 326 327 out: 328 QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len); 329 return 0; 330 } 331 332 static void qeth_l2_register_dev_addr(struct qeth_card *card) 333 { 334 if (!is_valid_ether_addr(card->dev->dev_addr)) 335 qeth_l2_request_initial_mac(card); 336 337 if (!IS_OSN(card) && !qeth_l2_send_setmac(card, card->dev->dev_addr)) 338 card->info.dev_addr_is_registered = 1; 339 else 340 card->info.dev_addr_is_registered = 0; 341 } 342 343 static int qeth_l2_validate_addr(struct net_device *dev) 344 { 345 struct qeth_card *card = dev->ml_priv; 346 347 if (card->info.dev_addr_is_registered) 348 return eth_validate_addr(dev); 349 350 QETH_CARD_TEXT(card, 4, "nomacadr"); 351 return -EPERM; 352 } 353 354 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 355 { 356 struct sockaddr *addr = p; 357 struct qeth_card *card = dev->ml_priv; 358 u8 old_addr[ETH_ALEN]; 359 int rc = 0; 360 361 QETH_CARD_TEXT(card, 3, "setmac"); 362 363 if (IS_OSM(card) || IS_OSX(card)) { 364 QETH_CARD_TEXT(card, 3, "setmcTYP"); 365 return -EOPNOTSUPP; 366 } 367 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 368 if (!is_valid_ether_addr(addr->sa_data)) 369 return -EADDRNOTAVAIL; 370 371 /* don't register the same address twice */ 372 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) && 373 card->info.dev_addr_is_registered) 374 return 0; 375 376 /* add the new address, switch over, drop the old */ 377 rc = qeth_l2_send_setmac(card, addr->sa_data); 378 if (rc) 379 return rc; 380 ether_addr_copy(old_addr, dev->dev_addr); 381 ether_addr_copy(dev->dev_addr, addr->sa_data); 382 383 if (card->info.dev_addr_is_registered) 384 qeth_l2_remove_mac(card, old_addr); 385 card->info.dev_addr_is_registered = 1; 386 return 0; 387 } 388 389 static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable) 390 { 391 int role; 392 int rc; 393 394 QETH_CARD_TEXT(card, 3, "pmisc2br"); 395 396 if (enable) { 397 if (card->options.sbp.reflect_promisc_primary) 398 role = QETH_SBP_ROLE_PRIMARY; 399 else 400 role = QETH_SBP_ROLE_SECONDARY; 401 } else 402 role = QETH_SBP_ROLE_NONE; 403 404 rc = qeth_bridgeport_setrole(card, role); 405 QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc); 406 if (!rc) { 407 card->options.sbp.role = role; 408 card->info.promisc_mode = enable; 409 } 410 } 411 412 static void qeth_l2_set_promisc_mode(struct qeth_card *card) 413 { 414 bool enable = card->dev->flags & IFF_PROMISC; 415 416 if (card->info.promisc_mode == enable) 417 return; 418 419 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) { 420 qeth_setadp_promisc_mode(card, enable); 421 } else { 422 mutex_lock(&card->sbp_lock); 423 if (card->options.sbp.reflect_promisc) 424 qeth_l2_promisc_to_bridge(card, enable); 425 mutex_unlock(&card->sbp_lock); 426 } 427 } 428 429 /* New MAC address is added to the hash table and marked to be written on card 430 * only if there is not in the hash table storage already 431 * 432 */ 433 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 434 { 435 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 436 struct qeth_mac *mac; 437 438 hash_for_each_possible(card->rx_mode_addrs, mac, hnode, mac_hash) { 439 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 440 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 441 return; 442 } 443 } 444 445 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 446 if (!mac) 447 return; 448 449 ether_addr_copy(mac->mac_addr, ha->addr); 450 mac->disp_flag = QETH_DISP_ADDR_ADD; 451 452 hash_add(card->rx_mode_addrs, &mac->hnode, mac_hash); 453 } 454 455 static void qeth_l2_rx_mode_work(struct work_struct *work) 456 { 457 struct qeth_card *card = container_of(work, struct qeth_card, 458 rx_mode_work); 459 struct net_device *dev = card->dev; 460 struct netdev_hw_addr *ha; 461 struct qeth_mac *mac; 462 struct hlist_node *tmp; 463 int i; 464 int rc; 465 466 QETH_CARD_TEXT(card, 3, "setmulti"); 467 468 netif_addr_lock_bh(dev); 469 netdev_for_each_mc_addr(ha, dev) 470 qeth_l2_add_mac(card, ha); 471 netdev_for_each_uc_addr(ha, dev) 472 qeth_l2_add_mac(card, ha); 473 netif_addr_unlock_bh(dev); 474 475 hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) { 476 switch (mac->disp_flag) { 477 case QETH_DISP_ADDR_DELETE: 478 qeth_l2_remove_mac(card, mac->mac_addr); 479 hash_del(&mac->hnode); 480 kfree(mac); 481 break; 482 case QETH_DISP_ADDR_ADD: 483 rc = qeth_l2_write_mac(card, mac->mac_addr); 484 if (rc) { 485 hash_del(&mac->hnode); 486 kfree(mac); 487 break; 488 } 489 fallthrough; 490 default: 491 /* for next call to set_rx_mode(): */ 492 mac->disp_flag = QETH_DISP_ADDR_DELETE; 493 } 494 } 495 496 qeth_l2_set_promisc_mode(card); 497 } 498 499 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 500 struct qeth_qdio_out_q *queue) 501 { 502 gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0); 503 struct qeth_hdr *hdr = (struct qeth_hdr *)skb->data; 504 addr_t end = (addr_t)(skb->data + sizeof(*hdr)); 505 addr_t start = (addr_t)skb->data; 506 unsigned int elements = 0; 507 unsigned int hd_len = 0; 508 int rc; 509 510 if (skb->protocol == htons(ETH_P_IPV6)) 511 return -EPROTONOSUPPORT; 512 513 if (qeth_get_elements_for_range(start, end) > 1) { 514 /* Misaligned HW header, move it to its own buffer element. */ 515 hdr = kmem_cache_alloc(qeth_core_header_cache, gfp); 516 if (!hdr) 517 return -ENOMEM; 518 hd_len = sizeof(*hdr); 519 skb_copy_from_linear_data(skb, (char *)hdr, hd_len); 520 elements++; 521 } 522 523 elements += qeth_count_elements(skb, hd_len); 524 if (elements > queue->max_elements) { 525 rc = -E2BIG; 526 goto out; 527 } 528 529 rc = qeth_do_send_packet(card, queue, skb, hdr, hd_len, hd_len, 530 elements); 531 out: 532 if (rc && hd_len) 533 kmem_cache_free(qeth_core_header_cache, hdr); 534 return rc; 535 } 536 537 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 538 struct net_device *dev) 539 { 540 struct qeth_card *card = dev->ml_priv; 541 u16 txq = skb_get_queue_mapping(skb); 542 struct qeth_qdio_out_q *queue; 543 int rc; 544 545 if (!skb_is_gso(skb)) 546 qdisc_skb_cb(skb)->pkt_len = skb->len; 547 if (IS_IQD(card)) 548 txq = qeth_iqd_translate_txq(dev, txq); 549 queue = card->qdio.out_qs[txq]; 550 551 if (IS_OSN(card)) 552 rc = qeth_l2_xmit_osn(card, skb, queue); 553 else 554 rc = qeth_xmit(card, skb, queue, qeth_get_ip_version(skb), 555 qeth_l2_fill_header); 556 557 if (!rc) 558 return NETDEV_TX_OK; 559 560 QETH_TXQ_STAT_INC(queue, tx_dropped); 561 kfree_skb(skb); 562 return NETDEV_TX_OK; 563 } 564 565 static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb, 566 struct net_device *sb_dev) 567 { 568 struct qeth_card *card = dev->ml_priv; 569 570 if (IS_IQD(card)) 571 return qeth_iqd_select_queue(dev, skb, 572 qeth_get_ether_cast_type(skb), 573 sb_dev); 574 if (qeth_uses_tx_prio_queueing(card)) 575 return qeth_get_priority_queue(card, skb); 576 577 return netdev_pick_tx(dev, skb, sb_dev); 578 } 579 580 static void qeth_l2_set_rx_mode(struct net_device *dev) 581 { 582 struct qeth_card *card = dev->ml_priv; 583 584 schedule_work(&card->rx_mode_work); 585 } 586 587 /** 588 * qeth_l2_pnso() - perform network subchannel operation 589 * @card: qeth_card structure pointer 590 * @oc: Operation Code 591 * @cnc: Boolean Change-Notification Control 592 * @cb: Callback function will be executed for each element 593 * of the address list 594 * @priv: Pointer to pass to the callback function. 595 * 596 * Collects network information in a network address list and calls the 597 * callback function for every entry in the list. If "change-notification- 598 * control" is set, further changes in the address list will be reported 599 * via the IPA command. 600 */ 601 static int qeth_l2_pnso(struct qeth_card *card, u8 oc, int cnc, 602 void (*cb)(void *priv, struct chsc_pnso_naid_l2 *entry), 603 void *priv) 604 { 605 struct ccw_device *ddev = CARD_DDEV(card); 606 struct chsc_pnso_area *rr; 607 u32 prev_instance = 0; 608 int isfirstblock = 1; 609 int i, size, elems; 610 int rc; 611 612 rr = (struct chsc_pnso_area *)get_zeroed_page(GFP_KERNEL); 613 if (rr == NULL) 614 return -ENOMEM; 615 do { 616 QETH_CARD_TEXT(card, 2, "PNSO"); 617 /* on the first iteration, naihdr.resume_token will be zero */ 618 rc = ccw_device_pnso(ddev, rr, oc, rr->naihdr.resume_token, 619 cnc); 620 if (rc) 621 continue; 622 if (cb == NULL) 623 continue; 624 625 size = rr->naihdr.naids; 626 if (size != sizeof(struct chsc_pnso_naid_l2)) { 627 WARN_ON_ONCE(1); 628 continue; 629 } 630 631 elems = (rr->response.length - sizeof(struct chsc_header) - 632 sizeof(struct chsc_pnso_naihdr)) / size; 633 634 if (!isfirstblock && (rr->naihdr.instance != prev_instance)) { 635 /* Inform the caller that they need to scrap */ 636 /* the data that was already reported via cb */ 637 rc = -EAGAIN; 638 break; 639 } 640 isfirstblock = 0; 641 prev_instance = rr->naihdr.instance; 642 for (i = 0; i < elems; i++) 643 (*cb)(priv, &rr->entries[i]); 644 } while ((rc == -EBUSY) || (!rc && /* list stored */ 645 /* resume token is non-zero => list incomplete */ 646 (rr->naihdr.resume_token.t1 || rr->naihdr.resume_token.t2))); 647 648 if (rc) 649 QETH_CARD_TEXT_(card, 2, "PNrp%04x", rr->response.code); 650 651 free_page((unsigned long)rr); 652 return rc; 653 } 654 655 static bool qeth_is_my_net_if_token(struct qeth_card *card, 656 struct net_if_token *token) 657 { 658 return ((card->info.ddev_devno == token->devnum) && 659 (card->info.cssid == token->cssid) && 660 (card->info.iid == token->iid) && 661 (card->info.ssid == token->ssid) && 662 (card->info.chpid == token->chpid) && 663 (card->info.chid == token->chid)); 664 } 665 666 /** 667 * qeth_l2_dev2br_fdb_notify() - update fdb of master bridge 668 * @card: qeth_card structure pointer 669 * @code: event bitmask: high order bit 0x80 set to 670 * 1 - removal of an object 671 * 0 - addition of an object 672 * Object type(s): 673 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC 674 * @token: "network token" structure identifying 'physical' location 675 * of the target 676 * @addr_lnid: structure with MAC address and VLAN ID of the target 677 */ 678 static void qeth_l2_dev2br_fdb_notify(struct qeth_card *card, u8 code, 679 struct net_if_token *token, 680 struct mac_addr_lnid *addr_lnid) 681 { 682 struct switchdev_notifier_fdb_info info; 683 u8 ntfy_mac[ETH_ALEN]; 684 685 ether_addr_copy(ntfy_mac, addr_lnid->mac); 686 /* Ignore VLAN only changes */ 687 if (!(code & IPA_ADDR_CHANGE_CODE_MACADDR)) 688 return; 689 /* Ignore mcast entries */ 690 if (is_multicast_ether_addr(ntfy_mac)) 691 return; 692 /* Ignore my own addresses */ 693 if (qeth_is_my_net_if_token(card, token)) 694 return; 695 696 info.addr = ntfy_mac; 697 /* don't report VLAN IDs */ 698 info.vid = 0; 699 info.added_by_user = false; 700 info.offloaded = true; 701 702 if (code & IPA_ADDR_CHANGE_CODE_REMOVAL) { 703 call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE, 704 card->dev, &info.info, NULL); 705 QETH_CARD_TEXT(card, 4, "andelmac"); 706 QETH_CARD_TEXT_(card, 4, 707 "mc%012lx", ether_addr_to_u64(ntfy_mac)); 708 } else { 709 call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE, 710 card->dev, &info.info, NULL); 711 QETH_CARD_TEXT(card, 4, "anaddmac"); 712 QETH_CARD_TEXT_(card, 4, 713 "mc%012lx", ether_addr_to_u64(ntfy_mac)); 714 } 715 } 716 717 static void qeth_l2_dev2br_an_set_cb(void *priv, 718 struct chsc_pnso_naid_l2 *entry) 719 { 720 u8 code = IPA_ADDR_CHANGE_CODE_MACADDR; 721 struct qeth_card *card = priv; 722 723 if (entry->addr_lnid.lnid < VLAN_N_VID) 724 code |= IPA_ADDR_CHANGE_CODE_VLANID; 725 qeth_l2_dev2br_fdb_notify(card, code, 726 (struct net_if_token *)&entry->nit, 727 (struct mac_addr_lnid *)&entry->addr_lnid); 728 } 729 730 /** 731 * qeth_l2_dev2br_an_set() - 732 * Enable or disable 'dev to bridge network address notification' 733 * @card: qeth_card structure pointer 734 * @enable: Enable or disable 'dev to bridge network address notification' 735 * 736 * Returns negative errno-compatible error indication or 0 on success. 737 * 738 * On enable, emits a series of address notifications for all 739 * currently registered hosts. 740 * 741 * Must be called under rtnl_lock 742 */ 743 static int qeth_l2_dev2br_an_set(struct qeth_card *card, bool enable) 744 { 745 int rc; 746 747 if (enable) { 748 QETH_CARD_TEXT(card, 2, "anseton"); 749 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 1, 750 qeth_l2_dev2br_an_set_cb, card); 751 if (rc == -EAGAIN) 752 /* address notification enabled, but inconsistent 753 * addresses reported -> disable address notification 754 */ 755 qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, 756 NULL, NULL); 757 } else { 758 QETH_CARD_TEXT(card, 2, "ansetoff"); 759 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL); 760 } 761 762 return rc; 763 } 764 765 static int qeth_l2_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, 766 struct net_device *dev, u32 filter_mask, 767 int nlflags) 768 { 769 struct qeth_priv *priv = netdev_priv(dev); 770 struct qeth_card *card = dev->ml_priv; 771 u16 mode = BRIDGE_MODE_UNDEF; 772 773 /* Do not even show qeth devs that cannot do bridge_setlink */ 774 if (!priv->brport_hw_features || !netif_device_present(dev) || 775 qeth_bridgeport_is_in_use(card)) 776 return -EOPNOTSUPP; 777 778 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, 779 mode, priv->brport_features, 780 priv->brport_hw_features, 781 nlflags, filter_mask, NULL); 782 } 783 784 static const struct nla_policy qeth_brport_policy[IFLA_BRPORT_MAX + 1] = { 785 [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 }, 786 }; 787 788 /** 789 * qeth_l2_bridge_setlink() - set bridgeport attributes 790 * @dev: netdevice 791 * @nlh: netlink message header 792 * @flags: bridge flags (here: BRIDGE_FLAGS_SELF) 793 * @extack: extended ACK report struct 794 * 795 * Called under rtnl_lock 796 */ 797 static int qeth_l2_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, 798 u16 flags, struct netlink_ext_ack *extack) 799 { 800 struct qeth_priv *priv = netdev_priv(dev); 801 struct nlattr *bp_tb[IFLA_BRPORT_MAX + 1]; 802 struct qeth_card *card = dev->ml_priv; 803 struct nlattr *attr, *nested_attr; 804 bool enable, has_protinfo = false; 805 int rem1, rem2; 806 int rc; 807 808 if (!netif_device_present(dev)) 809 return -ENODEV; 810 if (!(priv->brport_hw_features)) 811 return -EOPNOTSUPP; 812 813 nlmsg_for_each_attr(attr, nlh, sizeof(struct ifinfomsg), rem1) { 814 if (nla_type(attr) == IFLA_PROTINFO) { 815 rc = nla_parse_nested(bp_tb, IFLA_BRPORT_MAX, attr, 816 qeth_brport_policy, extack); 817 if (rc) 818 return rc; 819 has_protinfo = true; 820 } else if (nla_type(attr) == IFLA_AF_SPEC) { 821 nla_for_each_nested(nested_attr, attr, rem2) { 822 if (nla_type(nested_attr) == IFLA_BRIDGE_FLAGS) 823 continue; 824 NL_SET_ERR_MSG_ATTR(extack, nested_attr, 825 "Unsupported attribute"); 826 return -EINVAL; 827 } 828 } else { 829 NL_SET_ERR_MSG_ATTR(extack, attr, "Unsupported attribute"); 830 return -EINVAL; 831 } 832 } 833 if (!has_protinfo) 834 return 0; 835 if (!bp_tb[IFLA_BRPORT_LEARNING_SYNC]) 836 return -EINVAL; 837 enable = !!nla_get_u8(bp_tb[IFLA_BRPORT_LEARNING_SYNC]); 838 839 if (enable == !!(priv->brport_features & BR_LEARNING_SYNC)) 840 return 0; 841 842 mutex_lock(&card->sbp_lock); 843 /* do not change anything if BridgePort is enabled */ 844 if (qeth_bridgeport_is_in_use(card)) { 845 NL_SET_ERR_MSG(extack, "n/a (BridgePort)"); 846 rc = -EBUSY; 847 } else if (enable) { 848 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); 849 rc = qeth_l2_dev2br_an_set(card, true); 850 if (rc) 851 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 852 else 853 priv->brport_features |= BR_LEARNING_SYNC; 854 } else { 855 rc = qeth_l2_dev2br_an_set(card, false); 856 if (!rc) { 857 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 858 priv->brport_features ^= BR_LEARNING_SYNC; 859 qeth_l2_dev2br_fdb_flush(card); 860 } 861 } 862 mutex_unlock(&card->sbp_lock); 863 864 return rc; 865 } 866 867 static const struct net_device_ops qeth_l2_netdev_ops = { 868 .ndo_open = qeth_open, 869 .ndo_stop = qeth_stop, 870 .ndo_get_stats64 = qeth_get_stats64, 871 .ndo_start_xmit = qeth_l2_hard_start_xmit, 872 .ndo_features_check = qeth_features_check, 873 .ndo_select_queue = qeth_l2_select_queue, 874 .ndo_validate_addr = qeth_l2_validate_addr, 875 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 876 .ndo_do_ioctl = qeth_do_ioctl, 877 .ndo_set_mac_address = qeth_l2_set_mac_address, 878 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 879 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 880 .ndo_tx_timeout = qeth_tx_timeout, 881 .ndo_fix_features = qeth_fix_features, 882 .ndo_set_features = qeth_set_features, 883 .ndo_bridge_getlink = qeth_l2_bridge_getlink, 884 .ndo_bridge_setlink = qeth_l2_bridge_setlink, 885 }; 886 887 static const struct net_device_ops qeth_osn_netdev_ops = { 888 .ndo_open = qeth_open, 889 .ndo_stop = qeth_stop, 890 .ndo_get_stats64 = qeth_get_stats64, 891 .ndo_start_xmit = qeth_l2_hard_start_xmit, 892 .ndo_validate_addr = eth_validate_addr, 893 .ndo_tx_timeout = qeth_tx_timeout, 894 }; 895 896 static int qeth_l2_setup_netdev(struct qeth_card *card) 897 { 898 if (IS_OSN(card)) { 899 card->dev->netdev_ops = &qeth_osn_netdev_ops; 900 card->dev->flags |= IFF_NOARP; 901 goto add_napi; 902 } 903 904 card->dev->needed_headroom = sizeof(struct qeth_hdr); 905 card->dev->netdev_ops = &qeth_l2_netdev_ops; 906 card->dev->priv_flags |= IFF_UNICAST_FLT; 907 908 if (IS_OSM(card)) { 909 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 910 } else { 911 if (!IS_VM_NIC(card)) 912 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 913 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 914 } 915 916 if (IS_OSD(card) && !IS_VM_NIC(card)) { 917 card->dev->features |= NETIF_F_SG; 918 /* OSA 3S and earlier has no RX/TX support */ 919 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 920 card->dev->hw_features |= NETIF_F_IP_CSUM; 921 card->dev->vlan_features |= NETIF_F_IP_CSUM; 922 } 923 } 924 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 925 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 926 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 927 } 928 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) || 929 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) { 930 card->dev->hw_features |= NETIF_F_RXCSUM; 931 card->dev->vlan_features |= NETIF_F_RXCSUM; 932 } 933 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 934 card->dev->hw_features |= NETIF_F_TSO; 935 card->dev->vlan_features |= NETIF_F_TSO; 936 } 937 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 938 card->dev->hw_features |= NETIF_F_TSO6; 939 card->dev->vlan_features |= NETIF_F_TSO6; 940 } 941 942 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) { 943 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso); 944 netif_keep_dst(card->dev); 945 netif_set_gso_max_size(card->dev, 946 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)); 947 } 948 949 add_napi: 950 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 951 return register_netdev(card->dev); 952 } 953 954 static void qeth_l2_trace_features(struct qeth_card *card) 955 { 956 /* Set BridgePort features */ 957 QETH_CARD_TEXT(card, 2, "featuSBP"); 958 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 959 sizeof(card->options.sbp.supported_funcs)); 960 /* VNIC Characteristics features */ 961 QETH_CARD_TEXT(card, 2, "feaVNICC"); 962 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 963 sizeof(card->options.vnicc.sup_chars)); 964 } 965 966 static void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card) 967 { 968 if (!card->options.sbp.reflect_promisc && 969 card->options.sbp.role != QETH_SBP_ROLE_NONE) { 970 /* Conditional to avoid spurious error messages */ 971 qeth_bridgeport_setrole(card, card->options.sbp.role); 972 /* Let the callback function refresh the stored role value. */ 973 qeth_bridgeport_query_ports(card, &card->options.sbp.role, 974 NULL); 975 } 976 if (card->options.sbp.hostnotification) { 977 if (qeth_bridgeport_an_set(card, 1)) 978 card->options.sbp.hostnotification = 0; 979 } 980 } 981 982 /** 983 * qeth_l2_detect_dev2br_support() - 984 * Detect whether this card supports 'dev to bridge fdb network address 985 * change notification' and thus can support the learning_sync bridgeport 986 * attribute 987 * @card: qeth_card structure pointer 988 * 989 * This is a destructive test and must be called before dev2br or 990 * bridgeport address notification is enabled! 991 */ 992 static void qeth_l2_detect_dev2br_support(struct qeth_card *card) 993 { 994 struct qeth_priv *priv = netdev_priv(card->dev); 995 bool dev2br_supported; 996 int rc; 997 998 QETH_CARD_TEXT(card, 2, "d2brsup"); 999 if (!IS_IQD(card)) 1000 return; 1001 1002 /* dev2br requires valid cssid,iid,chid */ 1003 if (!card->info.ids_valid) { 1004 dev2br_supported = false; 1005 } else if (css_general_characteristics.enarf) { 1006 dev2br_supported = true; 1007 } else { 1008 /* Old machines don't have the feature bit: 1009 * Probe by testing whether a disable succeeds 1010 */ 1011 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL); 1012 dev2br_supported = !rc; 1013 } 1014 QETH_CARD_TEXT_(card, 2, "D2Bsup%02x", dev2br_supported); 1015 1016 if (dev2br_supported) 1017 priv->brport_hw_features |= BR_LEARNING_SYNC; 1018 else 1019 priv->brport_hw_features &= ~BR_LEARNING_SYNC; 1020 } 1021 1022 static void qeth_l2_enable_brport_features(struct qeth_card *card) 1023 { 1024 struct qeth_priv *priv = netdev_priv(card->dev); 1025 int rc; 1026 1027 if (priv->brport_features & BR_LEARNING_SYNC) { 1028 if (priv->brport_hw_features & BR_LEARNING_SYNC) { 1029 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); 1030 rc = qeth_l2_dev2br_an_set(card, true); 1031 if (rc == -EAGAIN) { 1032 /* Recoverable error, retry once */ 1033 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 1034 qeth_l2_dev2br_fdb_flush(card); 1035 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); 1036 rc = qeth_l2_dev2br_an_set(card, true); 1037 } 1038 if (rc) { 1039 netdev_err(card->dev, 1040 "failed to enable bridge learning_sync: %d\n", 1041 rc); 1042 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 1043 qeth_l2_dev2br_fdb_flush(card); 1044 priv->brport_features ^= BR_LEARNING_SYNC; 1045 } 1046 } else { 1047 dev_warn(&card->gdev->dev, 1048 "bridge learning_sync not supported\n"); 1049 priv->brport_features ^= BR_LEARNING_SYNC; 1050 } 1051 } 1052 } 1053 1054 #ifdef CONFIG_QETH_OSN 1055 static void qeth_osn_assist_cb(struct qeth_card *card, 1056 struct qeth_cmd_buffer *iob, 1057 unsigned int data_length) 1058 { 1059 qeth_notify_cmd(iob, 0); 1060 qeth_put_cmd(iob); 1061 } 1062 1063 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1064 { 1065 struct qeth_cmd_buffer *iob; 1066 struct qeth_card *card; 1067 1068 if (data_len < 0) 1069 return -EINVAL; 1070 if (!dev) 1071 return -ENODEV; 1072 card = dev->ml_priv; 1073 if (!card) 1074 return -ENODEV; 1075 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1076 if (!qeth_card_hw_is_reachable(card)) 1077 return -ENODEV; 1078 1079 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_len, 1, 1080 QETH_IPA_TIMEOUT); 1081 if (!iob) 1082 return -ENOMEM; 1083 1084 qeth_prepare_ipa_cmd(card, iob, (u16) data_len, NULL); 1085 1086 memcpy(__ipa_cmd(iob), data, data_len); 1087 iob->callback = qeth_osn_assist_cb; 1088 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 1089 } 1090 EXPORT_SYMBOL(qeth_osn_assist); 1091 1092 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1093 int (*assist_cb)(struct net_device *, void *), 1094 int (*data_cb)(struct sk_buff *)) 1095 { 1096 struct qeth_card *card; 1097 char bus_id[16]; 1098 u16 devno; 1099 1100 memcpy(&devno, read_dev_no, 2); 1101 sprintf(bus_id, "0.0.%04x", devno); 1102 card = qeth_get_card_by_busid(bus_id); 1103 if (!card || !IS_OSN(card)) 1104 return -ENODEV; 1105 *dev = card->dev; 1106 1107 QETH_CARD_TEXT(card, 2, "osnreg"); 1108 if ((assist_cb == NULL) || (data_cb == NULL)) 1109 return -EINVAL; 1110 card->osn_info.assist_cb = assist_cb; 1111 card->osn_info.data_cb = data_cb; 1112 return 0; 1113 } 1114 EXPORT_SYMBOL(qeth_osn_register); 1115 1116 void qeth_osn_deregister(struct net_device *dev) 1117 { 1118 struct qeth_card *card; 1119 1120 if (!dev) 1121 return; 1122 card = dev->ml_priv; 1123 if (!card) 1124 return; 1125 QETH_CARD_TEXT(card, 2, "osndereg"); 1126 card->osn_info.assist_cb = NULL; 1127 card->osn_info.data_cb = NULL; 1128 } 1129 EXPORT_SYMBOL(qeth_osn_deregister); 1130 #endif 1131 1132 /* SETBRIDGEPORT support, async notifications */ 1133 1134 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1135 1136 /** 1137 * qeth_bridge_emit_host_event() - bridgeport address change notification 1138 * @card: qeth_card structure pointer, for udev events. 1139 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1140 * and reset token and addr_lnid are unused and may be NULL. 1141 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1142 * object, 0 - addition of an object. 1143 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1144 * @token: "network token" structure identifying physical address of the port. 1145 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1146 * 1147 * This function is called when registrations and deregistrations are 1148 * reported by the hardware, and also when notifications are enabled - 1149 * for all currently registered addresses. 1150 */ 1151 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1152 enum qeth_an_event_type evtype, 1153 u8 code, 1154 struct net_if_token *token, 1155 struct mac_addr_lnid *addr_lnid) 1156 { 1157 char str[7][32]; 1158 char *env[8]; 1159 int i = 0; 1160 1161 switch (evtype) { 1162 case anev_reg_unreg: 1163 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1164 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1165 ? "deregister" : "register"); 1166 env[i] = str[i]; i++; 1167 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1168 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1169 addr_lnid->lnid); 1170 env[i] = str[i]; i++; 1171 } 1172 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1173 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1174 addr_lnid->mac); 1175 env[i] = str[i]; i++; 1176 } 1177 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1178 token->cssid, token->ssid, token->devnum); 1179 env[i] = str[i]; i++; 1180 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1181 env[i] = str[i]; i++; 1182 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1183 token->chpid); 1184 env[i] = str[i]; i++; 1185 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1186 env[i] = str[i]; i++; 1187 break; 1188 case anev_abort: 1189 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1190 env[i] = str[i]; i++; 1191 break; 1192 case anev_reset: 1193 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1194 env[i] = str[i]; i++; 1195 break; 1196 } 1197 env[i] = NULL; 1198 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1199 } 1200 1201 struct qeth_bridge_state_data { 1202 struct work_struct worker; 1203 struct qeth_card *card; 1204 u8 role; 1205 u8 state; 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 char env_locrem[32]; 1213 char env_role[32]; 1214 char env_state[32]; 1215 char *env[] = { 1216 env_locrem, 1217 env_role, 1218 env_state, 1219 NULL 1220 }; 1221 1222 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1223 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1224 (data->role == QETH_SBP_ROLE_NONE) ? "none" : 1225 (data->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1226 (data->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1227 "<INVALID>"); 1228 snprintf(env_state, sizeof(env_state), "STATE=%s", 1229 (data->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1230 (data->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1231 (data->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1232 "<INVALID>"); 1233 kobject_uevent_env(&data->card->gdev->dev.kobj, 1234 KOBJ_CHANGE, env); 1235 kfree(data); 1236 } 1237 1238 static void qeth_bridge_state_change(struct qeth_card *card, 1239 struct qeth_ipa_cmd *cmd) 1240 { 1241 struct qeth_sbp_port_data *qports = &cmd->data.sbp.data.port_data; 1242 struct qeth_bridge_state_data *data; 1243 1244 QETH_CARD_TEXT(card, 2, "brstchng"); 1245 if (qports->num_entries == 0) { 1246 QETH_CARD_TEXT(card, 2, "BPempty"); 1247 return; 1248 } 1249 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1250 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1251 return; 1252 } 1253 1254 data = kzalloc(sizeof(*data), GFP_ATOMIC); 1255 if (!data) { 1256 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1257 return; 1258 } 1259 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1260 data->card = card; 1261 /* Information for the local port: */ 1262 data->role = qports->entry[0].role; 1263 data->state = qports->entry[0].state; 1264 1265 queue_work(card->event_wq, &data->worker); 1266 } 1267 1268 struct qeth_addr_change_data { 1269 struct delayed_work dwork; 1270 struct qeth_card *card; 1271 struct qeth_ipacmd_addr_change ac_event; 1272 }; 1273 1274 static void qeth_l2_dev2br_worker(struct work_struct *work) 1275 { 1276 struct delayed_work *dwork = to_delayed_work(work); 1277 struct qeth_addr_change_data *data; 1278 struct qeth_card *card; 1279 struct qeth_priv *priv; 1280 unsigned int i; 1281 int rc; 1282 1283 data = container_of(dwork, struct qeth_addr_change_data, dwork); 1284 card = data->card; 1285 priv = netdev_priv(card->dev); 1286 1287 QETH_CARD_TEXT(card, 4, "dev2brew"); 1288 1289 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE) 1290 goto free; 1291 1292 /* Potential re-config in progress, try again later: */ 1293 if (!rtnl_trylock()) { 1294 queue_delayed_work(card->event_wq, dwork, 1295 msecs_to_jiffies(100)); 1296 return; 1297 } 1298 if (!netif_device_present(card->dev)) 1299 goto out_unlock; 1300 1301 if (data->ac_event.lost_event_mask) { 1302 QETH_DBF_MESSAGE(3, 1303 "Address change notification overflow on device %x\n", 1304 CARD_DEVID(card)); 1305 /* Card fdb and bridge fdb are out of sync, card has stopped 1306 * notifications (no need to drain_workqueue). Purge all 1307 * 'extern_learn' entries from the parent bridge and restart 1308 * the notifications. 1309 */ 1310 qeth_l2_dev2br_fdb_flush(card); 1311 rc = qeth_l2_dev2br_an_set(card, true); 1312 if (rc) { 1313 /* TODO: if we want to retry after -EAGAIN, be 1314 * aware there could be stale entries in the 1315 * workqueue now, that need to be drained. 1316 * For now we give up: 1317 */ 1318 netdev_err(card->dev, 1319 "bridge learning_sync failed to recover: %d\n", 1320 rc); 1321 WRITE_ONCE(card->info.pnso_mode, 1322 QETH_PNSO_NONE); 1323 /* To remove fdb entries reported by an_set: */ 1324 qeth_l2_dev2br_fdb_flush(card); 1325 priv->brport_features ^= BR_LEARNING_SYNC; 1326 } else { 1327 QETH_DBF_MESSAGE(3, 1328 "Address Notification resynced on device %x\n", 1329 CARD_DEVID(card)); 1330 } 1331 } else { 1332 for (i = 0; i < data->ac_event.num_entries; i++) { 1333 struct qeth_ipacmd_addr_change_entry *entry = 1334 &data->ac_event.entry[i]; 1335 qeth_l2_dev2br_fdb_notify(card, 1336 entry->change_code, 1337 &entry->token, 1338 &entry->addr_lnid); 1339 } 1340 } 1341 1342 out_unlock: 1343 rtnl_unlock(); 1344 1345 free: 1346 kfree(data); 1347 } 1348 1349 static void qeth_addr_change_event_worker(struct work_struct *work) 1350 { 1351 struct delayed_work *dwork = to_delayed_work(work); 1352 struct qeth_addr_change_data *data; 1353 struct qeth_card *card; 1354 int i; 1355 1356 data = container_of(dwork, struct qeth_addr_change_data, dwork); 1357 card = data->card; 1358 1359 QETH_CARD_TEXT(data->card, 4, "adrchgew"); 1360 1361 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE) 1362 goto free; 1363 1364 if (data->ac_event.lost_event_mask) { 1365 /* Potential re-config in progress, try again later: */ 1366 if (!mutex_trylock(&card->sbp_lock)) { 1367 queue_delayed_work(card->event_wq, dwork, 1368 msecs_to_jiffies(100)); 1369 return; 1370 } 1371 1372 dev_info(&data->card->gdev->dev, 1373 "Address change notification stopped on %s (%s)\n", 1374 netdev_name(card->dev), 1375 (data->ac_event.lost_event_mask == 0x01) 1376 ? "Overflow" 1377 : (data->ac_event.lost_event_mask == 0x02) 1378 ? "Bridge port state change" 1379 : "Unknown reason"); 1380 1381 data->card->options.sbp.hostnotification = 0; 1382 card->info.pnso_mode = QETH_PNSO_NONE; 1383 mutex_unlock(&data->card->sbp_lock); 1384 qeth_bridge_emit_host_event(data->card, anev_abort, 1385 0, NULL, NULL); 1386 } else 1387 for (i = 0; i < data->ac_event.num_entries; i++) { 1388 struct qeth_ipacmd_addr_change_entry *entry = 1389 &data->ac_event.entry[i]; 1390 qeth_bridge_emit_host_event(data->card, 1391 anev_reg_unreg, 1392 entry->change_code, 1393 &entry->token, 1394 &entry->addr_lnid); 1395 } 1396 1397 free: 1398 kfree(data); 1399 } 1400 1401 static void qeth_addr_change_event(struct qeth_card *card, 1402 struct qeth_ipa_cmd *cmd) 1403 { 1404 struct qeth_ipacmd_addr_change *hostevs = 1405 &cmd->data.addrchange; 1406 struct qeth_addr_change_data *data; 1407 int extrasize; 1408 1409 if (card->info.pnso_mode == QETH_PNSO_NONE) 1410 return; 1411 1412 QETH_CARD_TEXT(card, 4, "adrchgev"); 1413 if (cmd->hdr.return_code != 0x0000) { 1414 if (cmd->hdr.return_code == 0x0010) { 1415 if (hostevs->lost_event_mask == 0x00) 1416 hostevs->lost_event_mask = 0xff; 1417 } else { 1418 QETH_CARD_TEXT_(card, 2, "ACHN%04x", 1419 cmd->hdr.return_code); 1420 return; 1421 } 1422 } 1423 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1424 hostevs->num_entries; 1425 data = kzalloc(sizeof(struct qeth_addr_change_data) + extrasize, 1426 GFP_ATOMIC); 1427 if (!data) { 1428 QETH_CARD_TEXT(card, 2, "ACNalloc"); 1429 return; 1430 } 1431 if (card->info.pnso_mode == QETH_PNSO_BRIDGEPORT) 1432 INIT_DELAYED_WORK(&data->dwork, qeth_addr_change_event_worker); 1433 else 1434 INIT_DELAYED_WORK(&data->dwork, qeth_l2_dev2br_worker); 1435 data->card = card; 1436 memcpy(&data->ac_event, hostevs, 1437 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1438 queue_delayed_work(card->event_wq, &data->dwork, 0); 1439 } 1440 1441 /* SETBRIDGEPORT support; sending commands */ 1442 1443 struct _qeth_sbp_cbctl { 1444 union { 1445 u32 supported; 1446 struct { 1447 enum qeth_sbp_roles *role; 1448 enum qeth_sbp_states *state; 1449 } qports; 1450 } data; 1451 }; 1452 1453 static int qeth_bridgeport_makerc(struct qeth_card *card, 1454 struct qeth_ipa_cmd *cmd) 1455 { 1456 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp; 1457 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code; 1458 u16 ipa_rc = cmd->hdr.return_code; 1459 u16 sbp_rc = sbp->hdr.return_code; 1460 int rc; 1461 1462 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS) 1463 return 0; 1464 1465 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) || 1466 (!IS_IQD(card) && ipa_rc == sbp_rc)) { 1467 switch (sbp_rc) { 1468 case IPA_RC_SUCCESS: 1469 rc = 0; 1470 break; 1471 case IPA_RC_L2_UNSUPPORTED_CMD: 1472 case IPA_RC_UNSUPPORTED_COMMAND: 1473 rc = -EOPNOTSUPP; 1474 break; 1475 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1476 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1477 rc = -ENODEV; /* maybe not the best code here? */ 1478 dev_err(&card->gdev->dev, 1479 "The device is not configured as a Bridge Port\n"); 1480 break; 1481 case IPA_RC_SBP_OSA_OS_MISMATCH: 1482 case IPA_RC_SBP_IQD_OS_MISMATCH: 1483 rc = -EPERM; 1484 dev_err(&card->gdev->dev, 1485 "A Bridge Port is already configured by a different operating system\n"); 1486 break; 1487 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1488 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1489 switch (setcmd) { 1490 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1491 rc = -EEXIST; 1492 dev_err(&card->gdev->dev, 1493 "The LAN already has a primary Bridge Port\n"); 1494 break; 1495 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1496 rc = -EBUSY; 1497 dev_err(&card->gdev->dev, 1498 "The device is already a primary Bridge Port\n"); 1499 break; 1500 default: 1501 rc = -EIO; 1502 } 1503 break; 1504 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1505 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1506 rc = -EBUSY; 1507 dev_err(&card->gdev->dev, 1508 "The device is already a secondary Bridge Port\n"); 1509 break; 1510 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1511 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1512 rc = -EEXIST; 1513 dev_err(&card->gdev->dev, 1514 "The LAN cannot have more secondary Bridge Ports\n"); 1515 break; 1516 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1517 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1518 rc = -EBUSY; 1519 dev_err(&card->gdev->dev, 1520 "The device is already a primary Bridge Port\n"); 1521 break; 1522 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1523 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1524 rc = -EACCES; 1525 dev_err(&card->gdev->dev, 1526 "The device is not authorized to be a Bridge Port\n"); 1527 break; 1528 default: 1529 rc = -EIO; 1530 } 1531 } else { 1532 switch (ipa_rc) { 1533 case IPA_RC_NOTSUPP: 1534 rc = -EOPNOTSUPP; 1535 break; 1536 case IPA_RC_UNSUPPORTED_COMMAND: 1537 rc = -EOPNOTSUPP; 1538 break; 1539 default: 1540 rc = -EIO; 1541 } 1542 } 1543 1544 if (rc) { 1545 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc); 1546 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc); 1547 } 1548 return rc; 1549 } 1550 1551 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1552 enum qeth_ipa_sbp_cmd sbp_cmd, 1553 unsigned int data_length) 1554 { 1555 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD : 1556 IPA_CMD_SETBRIDGEPORT_OSA; 1557 struct qeth_ipacmd_sbp_hdr *hdr; 1558 struct qeth_cmd_buffer *iob; 1559 1560 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE, 1561 data_length + 1562 offsetof(struct qeth_ipacmd_setbridgeport, 1563 data)); 1564 if (!iob) 1565 return iob; 1566 1567 hdr = &__ipa_cmd(iob)->data.sbp.hdr; 1568 hdr->cmdlength = sizeof(*hdr) + data_length; 1569 hdr->command_code = sbp_cmd; 1570 hdr->used_total = 1; 1571 hdr->seq_no = 1; 1572 return iob; 1573 } 1574 1575 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1576 struct qeth_reply *reply, unsigned long data) 1577 { 1578 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1579 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1580 int rc; 1581 1582 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1583 rc = qeth_bridgeport_makerc(card, cmd); 1584 if (rc) 1585 return rc; 1586 1587 cbctl->data.supported = 1588 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1589 return 0; 1590 } 1591 1592 /** 1593 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1594 * @card: qeth_card structure pointer. 1595 * 1596 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1597 * strucutre: card->options.sbp.supported_funcs. 1598 */ 1599 static void qeth_bridgeport_query_support(struct qeth_card *card) 1600 { 1601 struct qeth_cmd_buffer *iob; 1602 struct _qeth_sbp_cbctl cbctl; 1603 1604 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1605 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1606 SBP_DATA_SIZEOF(query_cmds_supp)); 1607 if (!iob) 1608 return; 1609 1610 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1611 &cbctl)) { 1612 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1613 card->options.sbp.supported_funcs = 0; 1614 return; 1615 } 1616 card->options.sbp.supported_funcs = cbctl.data.supported; 1617 } 1618 1619 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1620 struct qeth_reply *reply, unsigned long data) 1621 { 1622 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1623 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1624 struct qeth_sbp_port_data *qports; 1625 int rc; 1626 1627 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1628 rc = qeth_bridgeport_makerc(card, cmd); 1629 if (rc) 1630 return rc; 1631 1632 qports = &cmd->data.sbp.data.port_data; 1633 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1634 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1635 return -EINVAL; 1636 } 1637 /* first entry contains the state of the local port */ 1638 if (qports->num_entries > 0) { 1639 if (cbctl->data.qports.role) 1640 *cbctl->data.qports.role = qports->entry[0].role; 1641 if (cbctl->data.qports.state) 1642 *cbctl->data.qports.state = qports->entry[0].state; 1643 } 1644 return 0; 1645 } 1646 1647 /** 1648 * qeth_bridgeport_query_ports() - query local bridgeport status. 1649 * @card: qeth_card structure pointer. 1650 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1651 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1652 * 1653 * Returns negative errno-compatible error indication or 0 on success. 1654 * 1655 * 'role' and 'state' are not updated in case of hardware operation failure. 1656 */ 1657 int qeth_bridgeport_query_ports(struct qeth_card *card, 1658 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1659 { 1660 struct qeth_cmd_buffer *iob; 1661 struct _qeth_sbp_cbctl cbctl = { 1662 .data = { 1663 .qports = { 1664 .role = role, 1665 .state = state, 1666 }, 1667 }, 1668 }; 1669 1670 QETH_CARD_TEXT(card, 2, "brqports"); 1671 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1672 return -EOPNOTSUPP; 1673 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1674 if (!iob) 1675 return -ENOMEM; 1676 1677 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1678 &cbctl); 1679 } 1680 1681 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1682 struct qeth_reply *reply, unsigned long data) 1683 { 1684 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1685 1686 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1687 return qeth_bridgeport_makerc(card, cmd); 1688 } 1689 1690 /** 1691 * qeth_bridgeport_setrole() - Assign primary role to the port. 1692 * @card: qeth_card structure pointer. 1693 * @role: Role to assign. 1694 * 1695 * Returns negative errno-compatible error indication or 0 on success. 1696 */ 1697 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1698 { 1699 struct qeth_cmd_buffer *iob; 1700 enum qeth_ipa_sbp_cmd setcmd; 1701 unsigned int cmdlength = 0; 1702 1703 QETH_CARD_TEXT(card, 2, "brsetrol"); 1704 switch (role) { 1705 case QETH_SBP_ROLE_NONE: 1706 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1707 break; 1708 case QETH_SBP_ROLE_PRIMARY: 1709 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1710 cmdlength = SBP_DATA_SIZEOF(set_primary); 1711 break; 1712 case QETH_SBP_ROLE_SECONDARY: 1713 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1714 break; 1715 default: 1716 return -EINVAL; 1717 } 1718 if (!(card->options.sbp.supported_funcs & setcmd)) 1719 return -EOPNOTSUPP; 1720 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1721 if (!iob) 1722 return -ENOMEM; 1723 1724 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL); 1725 } 1726 1727 static void qeth_bridgeport_an_set_cb(void *priv, 1728 struct chsc_pnso_naid_l2 *entry) 1729 { 1730 struct qeth_card *card = (struct qeth_card *)priv; 1731 u8 code; 1732 1733 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1734 if (entry->addr_lnid.lnid < VLAN_N_VID) 1735 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1736 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1737 (struct net_if_token *)&entry->nit, 1738 (struct mac_addr_lnid *)&entry->addr_lnid); 1739 } 1740 1741 /** 1742 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1743 * @card: qeth_card structure pointer. 1744 * @enable: 0 - disable, non-zero - enable notifications 1745 * 1746 * Returns negative errno-compatible error indication or 0 on success. 1747 * 1748 * On enable, emits a series of address notifications udev events for all 1749 * currently registered hosts. 1750 */ 1751 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 1752 { 1753 int rc; 1754 1755 if (!card->options.sbp.supported_funcs) 1756 return -EOPNOTSUPP; 1757 1758 if (enable) { 1759 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 1760 qeth_l2_set_pnso_mode(card, QETH_PNSO_BRIDGEPORT); 1761 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 1, 1762 qeth_bridgeport_an_set_cb, card); 1763 if (rc) 1764 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 1765 } else { 1766 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 0, NULL, NULL); 1767 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 1768 } 1769 return rc; 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 */ 1807 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 1808 struct qeth_reply *reply, 1809 unsigned long data) 1810 { 1811 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1812 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 1813 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command; 1814 1815 QETH_CARD_TEXT(card, 2, "vniccrcb"); 1816 if (cmd->hdr.return_code) 1817 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code); 1818 /* return results to caller */ 1819 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported; 1820 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled; 1821 1822 if (sub_cmd == IPA_VNICC_QUERY_CMDS) 1823 *(u32 *)reply->param = rep->data.query_cmds.sup_cmds; 1824 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT) 1825 *(u32 *)reply->param = rep->data.getset_timeout.timeout; 1826 1827 return 0; 1828 } 1829 1830 static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card, 1831 u32 vnicc_cmd, 1832 unsigned int data_length) 1833 { 1834 struct qeth_ipacmd_vnicc_hdr *hdr; 1835 struct qeth_cmd_buffer *iob; 1836 1837 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE, 1838 data_length + 1839 offsetof(struct qeth_ipacmd_vnicc, data)); 1840 if (!iob) 1841 return NULL; 1842 1843 hdr = &__ipa_cmd(iob)->data.vnicc.hdr; 1844 hdr->data_length = sizeof(*hdr) + data_length; 1845 hdr->sub_command = vnicc_cmd; 1846 return iob; 1847 } 1848 1849 /* VNICC query VNIC characteristics request */ 1850 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 1851 { 1852 struct qeth_cmd_buffer *iob; 1853 1854 QETH_CARD_TEXT(card, 2, "vniccqch"); 1855 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0); 1856 if (!iob) 1857 return -ENOMEM; 1858 1859 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1860 } 1861 1862 /* VNICC query sub commands request */ 1863 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 1864 u32 *sup_cmds) 1865 { 1866 struct qeth_cmd_buffer *iob; 1867 1868 QETH_CARD_TEXT(card, 2, "vniccqcm"); 1869 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS, 1870 VNICC_DATA_SIZEOF(query_cmds)); 1871 if (!iob) 1872 return -ENOMEM; 1873 1874 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char; 1875 1876 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, sup_cmds); 1877 } 1878 1879 /* VNICC enable/disable characteristic request */ 1880 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 1881 u32 cmd) 1882 { 1883 struct qeth_cmd_buffer *iob; 1884 1885 QETH_CARD_TEXT(card, 2, "vniccedc"); 1886 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char)); 1887 if (!iob) 1888 return -ENOMEM; 1889 1890 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char; 1891 1892 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1893 } 1894 1895 /* VNICC get/set timeout for characteristic request */ 1896 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 1897 u32 cmd, u32 *timeout) 1898 { 1899 struct qeth_vnicc_getset_timeout *getset_timeout; 1900 struct qeth_cmd_buffer *iob; 1901 1902 QETH_CARD_TEXT(card, 2, "vniccgst"); 1903 iob = qeth_l2_vnicc_build_cmd(card, cmd, 1904 VNICC_DATA_SIZEOF(getset_timeout)); 1905 if (!iob) 1906 return -ENOMEM; 1907 1908 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout; 1909 getset_timeout->vnic_char = vnicc; 1910 1911 if (cmd == IPA_VNICC_SET_TIMEOUT) 1912 getset_timeout->timeout = *timeout; 1913 1914 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, timeout); 1915 } 1916 1917 /* recover user timeout setting */ 1918 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 1919 u32 *timeout) 1920 { 1921 if (card->options.vnicc.sup_chars & vnicc && 1922 card->options.vnicc.getset_timeout_sup & vnicc && 1923 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 1924 timeout)) 1925 return false; 1926 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 1927 return true; 1928 } 1929 1930 /* set current VNICC flag state; called from sysfs store function */ 1931 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 1932 { 1933 int rc = 0; 1934 u32 cmd; 1935 1936 QETH_CARD_TEXT(card, 2, "vniccsch"); 1937 1938 /* check if characteristic and enable/disable are supported */ 1939 if (!(card->options.vnicc.sup_chars & vnicc) || 1940 !(card->options.vnicc.set_char_sup & vnicc)) 1941 return -EOPNOTSUPP; 1942 1943 if (qeth_bridgeport_is_in_use(card)) 1944 return -EBUSY; 1945 1946 /* set enable/disable command and store wanted characteristic */ 1947 if (state) { 1948 cmd = IPA_VNICC_ENABLE; 1949 card->options.vnicc.wanted_chars |= vnicc; 1950 } else { 1951 cmd = IPA_VNICC_DISABLE; 1952 card->options.vnicc.wanted_chars &= ~vnicc; 1953 } 1954 1955 /* do we need to do anything? */ 1956 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 1957 return rc; 1958 1959 /* if card is not ready, simply stop here */ 1960 if (!qeth_card_hw_is_reachable(card)) { 1961 if (state) 1962 card->options.vnicc.cur_chars |= vnicc; 1963 else 1964 card->options.vnicc.cur_chars &= ~vnicc; 1965 return rc; 1966 } 1967 1968 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 1969 if (rc) 1970 card->options.vnicc.wanted_chars = 1971 card->options.vnicc.cur_chars; 1972 else { 1973 /* successful online VNICC change; handle special cases */ 1974 if (state && vnicc == QETH_VNICC_RX_BCAST) 1975 card->options.vnicc.rx_bcast_enabled = true; 1976 if (!state && vnicc == QETH_VNICC_LEARNING) 1977 qeth_l2_vnicc_recover_timeout(card, vnicc, 1978 &card->options.vnicc.learning_timeout); 1979 } 1980 1981 return rc; 1982 } 1983 1984 /* get current VNICC flag state; called from sysfs show function */ 1985 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 1986 { 1987 int rc = 0; 1988 1989 QETH_CARD_TEXT(card, 2, "vniccgch"); 1990 1991 /* check if characteristic is supported */ 1992 if (!(card->options.vnicc.sup_chars & vnicc)) 1993 return -EOPNOTSUPP; 1994 1995 if (qeth_bridgeport_is_in_use(card)) 1996 return -EBUSY; 1997 1998 /* if card is ready, query current VNICC state */ 1999 if (qeth_card_hw_is_reachable(card)) 2000 rc = qeth_l2_vnicc_query_chars(card); 2001 2002 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 2003 return rc; 2004 } 2005 2006 /* set VNICC timeout; called from sysfs store function. Currently, only learning 2007 * supports timeout 2008 */ 2009 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 2010 { 2011 int rc = 0; 2012 2013 QETH_CARD_TEXT(card, 2, "vniccsto"); 2014 2015 /* check if characteristic and set_timeout are supported */ 2016 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2017 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2018 return -EOPNOTSUPP; 2019 2020 if (qeth_bridgeport_is_in_use(card)) 2021 return -EBUSY; 2022 2023 /* do we need to do anything? */ 2024 if (card->options.vnicc.learning_timeout == timeout) 2025 return rc; 2026 2027 /* if card is not ready, simply store the value internally and return */ 2028 if (!qeth_card_hw_is_reachable(card)) { 2029 card->options.vnicc.learning_timeout = timeout; 2030 return rc; 2031 } 2032 2033 /* send timeout value to card; if successful, store value internally */ 2034 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2035 IPA_VNICC_SET_TIMEOUT, &timeout); 2036 if (!rc) 2037 card->options.vnicc.learning_timeout = timeout; 2038 2039 return rc; 2040 } 2041 2042 /* get current VNICC timeout; called from sysfs show function. Currently, only 2043 * learning supports timeout 2044 */ 2045 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 2046 { 2047 int rc = 0; 2048 2049 QETH_CARD_TEXT(card, 2, "vniccgto"); 2050 2051 /* check if characteristic and get_timeout are supported */ 2052 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2053 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2054 return -EOPNOTSUPP; 2055 2056 if (qeth_bridgeport_is_in_use(card)) 2057 return -EBUSY; 2058 2059 /* if card is ready, get timeout. Otherwise, just return stored value */ 2060 *timeout = card->options.vnicc.learning_timeout; 2061 if (qeth_card_hw_is_reachable(card)) 2062 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2063 IPA_VNICC_GET_TIMEOUT, 2064 timeout); 2065 2066 return rc; 2067 } 2068 2069 /* check if VNICC is currently enabled */ 2070 static bool _qeth_l2_vnicc_is_in_use(struct qeth_card *card) 2071 { 2072 if (!card->options.vnicc.sup_chars) 2073 return false; 2074 /* default values are only OK if rx_bcast was not enabled by user 2075 * or the card is offline. 2076 */ 2077 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 2078 if (!card->options.vnicc.rx_bcast_enabled || 2079 !qeth_card_hw_is_reachable(card)) 2080 return false; 2081 } 2082 return true; 2083 } 2084 2085 /** 2086 * qeth_bridgeport_allowed - are any qeth_bridgeport functions allowed? 2087 * @card: qeth_card structure pointer 2088 * 2089 * qeth_bridgeport functionality is mutually exclusive with usage of the 2090 * VNIC Characteristics and dev2br address notifications 2091 */ 2092 bool qeth_bridgeport_allowed(struct qeth_card *card) 2093 { 2094 struct qeth_priv *priv = netdev_priv(card->dev); 2095 2096 return (!_qeth_l2_vnicc_is_in_use(card) && 2097 !(priv->brport_features & BR_LEARNING_SYNC)); 2098 } 2099 2100 /* recover user characteristic setting */ 2101 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2102 bool enable) 2103 { 2104 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2105 2106 if (card->options.vnicc.sup_chars & vnicc && 2107 card->options.vnicc.set_char_sup & vnicc && 2108 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2109 return false; 2110 card->options.vnicc.wanted_chars &= ~vnicc; 2111 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2112 return true; 2113 } 2114 2115 /* (re-)initialize VNICC */ 2116 static void qeth_l2_vnicc_init(struct qeth_card *card) 2117 { 2118 u32 *timeout = &card->options.vnicc.learning_timeout; 2119 bool enable, error = false; 2120 unsigned int chars_len, i; 2121 unsigned long chars_tmp; 2122 u32 sup_cmds, vnicc; 2123 2124 QETH_CARD_TEXT(card, 2, "vniccini"); 2125 /* reset rx_bcast */ 2126 card->options.vnicc.rx_bcast_enabled = 0; 2127 /* initial query and storage of VNIC characteristics */ 2128 if (qeth_l2_vnicc_query_chars(card)) { 2129 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2130 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2131 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2132 /* fail quietly if user didn't change the default config */ 2133 card->options.vnicc.sup_chars = 0; 2134 card->options.vnicc.cur_chars = 0; 2135 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2136 return; 2137 } 2138 /* get supported commands for each supported characteristic */ 2139 chars_tmp = card->options.vnicc.sup_chars; 2140 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2141 for_each_set_bit(i, &chars_tmp, chars_len) { 2142 vnicc = BIT(i); 2143 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) { 2144 sup_cmds = 0; 2145 error = true; 2146 } 2147 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) && 2148 (sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2149 card->options.vnicc.getset_timeout_sup |= vnicc; 2150 else 2151 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2152 if ((sup_cmds & IPA_VNICC_ENABLE) && 2153 (sup_cmds & IPA_VNICC_DISABLE)) 2154 card->options.vnicc.set_char_sup |= vnicc; 2155 else 2156 card->options.vnicc.set_char_sup &= ~vnicc; 2157 } 2158 /* enforce assumed default values and recover settings, if changed */ 2159 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2160 timeout); 2161 /* Change chars, if necessary */ 2162 chars_tmp = card->options.vnicc.wanted_chars ^ 2163 card->options.vnicc.cur_chars; 2164 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2165 for_each_set_bit(i, &chars_tmp, chars_len) { 2166 vnicc = BIT(i); 2167 enable = card->options.vnicc.wanted_chars & vnicc; 2168 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2169 } 2170 if (error) 2171 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2172 } 2173 2174 /* configure default values of VNIC characteristics */ 2175 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2176 { 2177 /* characteristics values */ 2178 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2179 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2180 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2181 /* supported commands */ 2182 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2183 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2184 /* settings wanted by users */ 2185 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2186 } 2187 2188 static const struct device_type qeth_l2_devtype = { 2189 .name = "qeth_layer2", 2190 .groups = qeth_l2_attr_groups, 2191 }; 2192 2193 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 2194 { 2195 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2196 int rc; 2197 2198 if (IS_OSN(card)) 2199 dev_notice(&gdev->dev, "OSN support will be dropped in 2021\n"); 2200 2201 qeth_l2_vnicc_set_defaults(card); 2202 mutex_init(&card->sbp_lock); 2203 2204 if (gdev->dev.type == &qeth_generic_devtype) { 2205 rc = qeth_l2_create_device_attributes(&gdev->dev); 2206 if (rc) 2207 return rc; 2208 } 2209 2210 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work); 2211 return 0; 2212 } 2213 2214 static void qeth_l2_remove_device(struct ccwgroup_device *gdev) 2215 { 2216 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2217 2218 if (gdev->dev.type == &qeth_generic_devtype) 2219 qeth_l2_remove_device_attributes(&gdev->dev); 2220 qeth_set_allowed_threads(card, 0, 1); 2221 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 2222 2223 if (gdev->state == CCWGROUP_ONLINE) 2224 qeth_set_offline(card, false); 2225 2226 cancel_work_sync(&card->close_dev_work); 2227 if (card->dev->reg_state == NETREG_REGISTERED) 2228 unregister_netdev(card->dev); 2229 } 2230 2231 static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok) 2232 { 2233 struct net_device *dev = card->dev; 2234 int rc = 0; 2235 2236 /* query before bridgeport_notification may be enabled */ 2237 qeth_l2_detect_dev2br_support(card); 2238 2239 mutex_lock(&card->sbp_lock); 2240 qeth_bridgeport_query_support(card); 2241 if (card->options.sbp.supported_funcs) { 2242 qeth_l2_setup_bridgeport_attrs(card); 2243 dev_info(&card->gdev->dev, 2244 "The device represents a Bridge Capable Port\n"); 2245 } 2246 mutex_unlock(&card->sbp_lock); 2247 2248 qeth_l2_register_dev_addr(card); 2249 2250 /* for the rx_bcast characteristic, init VNICC after setmac */ 2251 qeth_l2_vnicc_init(card); 2252 2253 qeth_l2_trace_features(card); 2254 2255 /* softsetup */ 2256 QETH_CARD_TEXT(card, 2, "softsetp"); 2257 2258 card->state = CARD_STATE_SOFTSETUP; 2259 2260 qeth_set_allowed_threads(card, 0xffffffff, 0); 2261 2262 if (dev->reg_state != NETREG_REGISTERED) { 2263 rc = qeth_l2_setup_netdev(card); 2264 if (rc) 2265 goto err_setup; 2266 2267 if (carrier_ok) 2268 netif_carrier_on(dev); 2269 } else { 2270 rtnl_lock(); 2271 rc = qeth_set_real_num_tx_queues(card, 2272 qeth_tx_actual_queues(card)); 2273 if (rc) { 2274 rtnl_unlock(); 2275 goto err_set_queues; 2276 } 2277 2278 if (carrier_ok) 2279 netif_carrier_on(dev); 2280 else 2281 netif_carrier_off(dev); 2282 2283 netif_device_attach(dev); 2284 qeth_enable_hw_features(dev); 2285 qeth_l2_enable_brport_features(card); 2286 2287 if (card->info.open_when_online) { 2288 card->info.open_when_online = 0; 2289 dev_open(dev, NULL); 2290 } 2291 rtnl_unlock(); 2292 } 2293 return 0; 2294 2295 err_set_queues: 2296 err_setup: 2297 qeth_set_allowed_threads(card, 0, 1); 2298 card->state = CARD_STATE_DOWN; 2299 return rc; 2300 } 2301 2302 static void qeth_l2_set_offline(struct qeth_card *card) 2303 { 2304 struct qeth_priv *priv = netdev_priv(card->dev); 2305 2306 qeth_set_allowed_threads(card, 0, 1); 2307 qeth_l2_drain_rx_mode_cache(card); 2308 2309 if (card->state == CARD_STATE_SOFTSETUP) 2310 card->state = CARD_STATE_DOWN; 2311 2312 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 2313 if (priv->brport_features & BR_LEARNING_SYNC) { 2314 rtnl_lock(); 2315 qeth_l2_dev2br_fdb_flush(card); 2316 rtnl_unlock(); 2317 } 2318 } 2319 2320 /* Returns zero if the command is successfully "consumed" */ 2321 static int qeth_l2_control_event(struct qeth_card *card, 2322 struct qeth_ipa_cmd *cmd) 2323 { 2324 switch (cmd->hdr.command) { 2325 case IPA_CMD_SETBRIDGEPORT_OSA: 2326 case IPA_CMD_SETBRIDGEPORT_IQD: 2327 if (cmd->data.sbp.hdr.command_code == 2328 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 2329 qeth_bridge_state_change(card, cmd); 2330 return 0; 2331 } 2332 2333 return 1; 2334 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 2335 qeth_addr_change_event(card, cmd); 2336 return 0; 2337 default: 2338 return 1; 2339 } 2340 } 2341 2342 const struct qeth_discipline qeth_l2_discipline = { 2343 .devtype = &qeth_l2_devtype, 2344 .setup = qeth_l2_probe_device, 2345 .remove = qeth_l2_remove_device, 2346 .set_online = qeth_l2_set_online, 2347 .set_offline = qeth_l2_set_offline, 2348 .do_ioctl = NULL, 2349 .control_event_handler = qeth_l2_control_event, 2350 }; 2351 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 2352 2353 static int __init qeth_l2_init(void) 2354 { 2355 pr_info("register layer 2 discipline\n"); 2356 return 0; 2357 } 2358 2359 static void __exit qeth_l2_exit(void) 2360 { 2361 pr_info("unregister layer 2 discipline\n"); 2362 } 2363 2364 module_init(qeth_l2_init); 2365 module_exit(qeth_l2_exit); 2366 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2367 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2368 MODULE_LICENSE("GPL"); 2369