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 __be16 proto, 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], proto); 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, vlan_get_protocol(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 static int qeth_l2_dev2br_an_set(struct qeth_card *card, bool enable) 742 { 743 int rc; 744 745 if (enable) { 746 QETH_CARD_TEXT(card, 2, "anseton"); 747 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 1, 748 qeth_l2_dev2br_an_set_cb, card); 749 if (rc == -EAGAIN) 750 /* address notification enabled, but inconsistent 751 * addresses reported -> disable address notification 752 */ 753 qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, 754 NULL, NULL); 755 } else { 756 QETH_CARD_TEXT(card, 2, "ansetoff"); 757 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL); 758 } 759 760 return rc; 761 } 762 763 static int qeth_l2_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, 764 struct net_device *dev, u32 filter_mask, 765 int nlflags) 766 { 767 struct qeth_priv *priv = netdev_priv(dev); 768 struct qeth_card *card = dev->ml_priv; 769 u16 mode = BRIDGE_MODE_UNDEF; 770 771 /* Do not even show qeth devs that cannot do bridge_setlink */ 772 if (!priv->brport_hw_features || !netif_device_present(dev) || 773 qeth_bridgeport_is_in_use(card)) 774 return -EOPNOTSUPP; 775 776 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, 777 mode, priv->brport_features, 778 priv->brport_hw_features, 779 nlflags, filter_mask, NULL); 780 } 781 782 static const struct nla_policy qeth_brport_policy[IFLA_BRPORT_MAX + 1] = { 783 [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 }, 784 }; 785 786 /** 787 * qeth_l2_bridge_setlink() - set bridgeport attributes 788 * @dev: netdevice 789 * @nlh: netlink message header 790 * @flags: bridge flags (here: BRIDGE_FLAGS_SELF) 791 * @extack: extended ACK report struct 792 * 793 * Called under rtnl_lock 794 */ 795 static int qeth_l2_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, 796 u16 flags, struct netlink_ext_ack *extack) 797 { 798 struct qeth_priv *priv = netdev_priv(dev); 799 struct nlattr *bp_tb[IFLA_BRPORT_MAX + 1]; 800 struct qeth_card *card = dev->ml_priv; 801 struct nlattr *attr, *nested_attr; 802 bool enable, has_protinfo = false; 803 int rem1, rem2; 804 int rc; 805 806 if (!netif_device_present(dev)) 807 return -ENODEV; 808 if (!(priv->brport_hw_features)) 809 return -EOPNOTSUPP; 810 811 nlmsg_for_each_attr(attr, nlh, sizeof(struct ifinfomsg), rem1) { 812 if (nla_type(attr) == IFLA_PROTINFO) { 813 rc = nla_parse_nested(bp_tb, IFLA_BRPORT_MAX, attr, 814 qeth_brport_policy, extack); 815 if (rc) 816 return rc; 817 has_protinfo = true; 818 } else if (nla_type(attr) == IFLA_AF_SPEC) { 819 nla_for_each_nested(nested_attr, attr, rem2) { 820 if (nla_type(nested_attr) == IFLA_BRIDGE_FLAGS) 821 continue; 822 NL_SET_ERR_MSG_ATTR(extack, nested_attr, 823 "Unsupported attribute"); 824 return -EINVAL; 825 } 826 } else { 827 NL_SET_ERR_MSG_ATTR(extack, attr, "Unsupported attribute"); 828 return -EINVAL; 829 } 830 } 831 if (!has_protinfo) 832 return 0; 833 if (!bp_tb[IFLA_BRPORT_LEARNING_SYNC]) 834 return -EINVAL; 835 enable = !!nla_get_u8(bp_tb[IFLA_BRPORT_LEARNING_SYNC]); 836 837 if (enable == !!(priv->brport_features & BR_LEARNING_SYNC)) 838 return 0; 839 840 mutex_lock(&card->sbp_lock); 841 /* do not change anything if BridgePort is enabled */ 842 if (qeth_bridgeport_is_in_use(card)) { 843 NL_SET_ERR_MSG(extack, "n/a (BridgePort)"); 844 rc = -EBUSY; 845 } else if (enable) { 846 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); 847 rc = qeth_l2_dev2br_an_set(card, true); 848 if (rc) 849 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 850 else 851 priv->brport_features |= BR_LEARNING_SYNC; 852 } else { 853 rc = qeth_l2_dev2br_an_set(card, false); 854 if (!rc) { 855 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 856 priv->brport_features ^= BR_LEARNING_SYNC; 857 qeth_l2_dev2br_fdb_flush(card); 858 } 859 } 860 mutex_unlock(&card->sbp_lock); 861 862 return rc; 863 } 864 865 static const struct net_device_ops qeth_l2_netdev_ops = { 866 .ndo_open = qeth_open, 867 .ndo_stop = qeth_stop, 868 .ndo_get_stats64 = qeth_get_stats64, 869 .ndo_start_xmit = qeth_l2_hard_start_xmit, 870 .ndo_features_check = qeth_features_check, 871 .ndo_select_queue = qeth_l2_select_queue, 872 .ndo_validate_addr = qeth_l2_validate_addr, 873 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 874 .ndo_do_ioctl = qeth_do_ioctl, 875 .ndo_set_mac_address = qeth_l2_set_mac_address, 876 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 877 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 878 .ndo_tx_timeout = qeth_tx_timeout, 879 .ndo_fix_features = qeth_fix_features, 880 .ndo_set_features = qeth_set_features, 881 .ndo_bridge_getlink = qeth_l2_bridge_getlink, 882 .ndo_bridge_setlink = qeth_l2_bridge_setlink, 883 }; 884 885 static const struct net_device_ops qeth_osn_netdev_ops = { 886 .ndo_open = qeth_open, 887 .ndo_stop = qeth_stop, 888 .ndo_get_stats64 = qeth_get_stats64, 889 .ndo_start_xmit = qeth_l2_hard_start_xmit, 890 .ndo_validate_addr = eth_validate_addr, 891 .ndo_tx_timeout = qeth_tx_timeout, 892 }; 893 894 static int qeth_l2_setup_netdev(struct qeth_card *card) 895 { 896 if (IS_OSN(card)) { 897 card->dev->netdev_ops = &qeth_osn_netdev_ops; 898 card->dev->flags |= IFF_NOARP; 899 goto add_napi; 900 } 901 902 card->dev->needed_headroom = sizeof(struct qeth_hdr); 903 card->dev->netdev_ops = &qeth_l2_netdev_ops; 904 card->dev->priv_flags |= IFF_UNICAST_FLT; 905 906 if (IS_OSM(card)) { 907 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 908 } else { 909 if (!IS_VM_NIC(card)) 910 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 911 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 912 } 913 914 if (IS_OSD(card) && !IS_VM_NIC(card)) { 915 card->dev->features |= NETIF_F_SG; 916 /* OSA 3S and earlier has no RX/TX support */ 917 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 918 card->dev->hw_features |= NETIF_F_IP_CSUM; 919 card->dev->vlan_features |= NETIF_F_IP_CSUM; 920 } 921 } 922 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 923 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 924 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 925 } 926 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) || 927 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) { 928 card->dev->hw_features |= NETIF_F_RXCSUM; 929 card->dev->vlan_features |= NETIF_F_RXCSUM; 930 } 931 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 932 card->dev->hw_features |= NETIF_F_TSO; 933 card->dev->vlan_features |= NETIF_F_TSO; 934 } 935 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 936 card->dev->hw_features |= NETIF_F_TSO6; 937 card->dev->vlan_features |= NETIF_F_TSO6; 938 } 939 940 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) { 941 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso); 942 netif_keep_dst(card->dev); 943 netif_set_gso_max_size(card->dev, 944 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)); 945 } 946 947 add_napi: 948 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 949 return register_netdev(card->dev); 950 } 951 952 static void qeth_l2_trace_features(struct qeth_card *card) 953 { 954 /* Set BridgePort features */ 955 QETH_CARD_TEXT(card, 2, "featuSBP"); 956 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 957 sizeof(card->options.sbp.supported_funcs)); 958 /* VNIC Characteristics features */ 959 QETH_CARD_TEXT(card, 2, "feaVNICC"); 960 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 961 sizeof(card->options.vnicc.sup_chars)); 962 } 963 964 static void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card) 965 { 966 if (!card->options.sbp.reflect_promisc && 967 card->options.sbp.role != QETH_SBP_ROLE_NONE) { 968 /* Conditional to avoid spurious error messages */ 969 qeth_bridgeport_setrole(card, card->options.sbp.role); 970 /* Let the callback function refresh the stored role value. */ 971 qeth_bridgeport_query_ports(card, &card->options.sbp.role, 972 NULL); 973 } 974 if (card->options.sbp.hostnotification) { 975 if (qeth_bridgeport_an_set(card, 1)) 976 card->options.sbp.hostnotification = 0; 977 } 978 } 979 980 /** 981 * qeth_l2_detect_dev2br_support() - 982 * Detect whether this card supports 'dev to bridge fdb network address 983 * change notification' and thus can support the learning_sync bridgeport 984 * attribute 985 * @card: qeth_card structure pointer 986 */ 987 static void qeth_l2_detect_dev2br_support(struct qeth_card *card) 988 { 989 struct qeth_priv *priv = netdev_priv(card->dev); 990 bool dev2br_supported; 991 992 QETH_CARD_TEXT(card, 2, "d2brsup"); 993 if (!IS_IQD(card)) 994 return; 995 996 /* dev2br requires valid cssid,iid,chid */ 997 dev2br_supported = card->info.ids_valid && 998 css_general_characteristics.enarf; 999 QETH_CARD_TEXT_(card, 2, "D2Bsup%02x", dev2br_supported); 1000 1001 if (dev2br_supported) 1002 priv->brport_hw_features |= BR_LEARNING_SYNC; 1003 else 1004 priv->brport_hw_features &= ~BR_LEARNING_SYNC; 1005 } 1006 1007 static void qeth_l2_enable_brport_features(struct qeth_card *card) 1008 { 1009 struct qeth_priv *priv = netdev_priv(card->dev); 1010 int rc; 1011 1012 if (priv->brport_features & BR_LEARNING_SYNC) { 1013 if (priv->brport_hw_features & BR_LEARNING_SYNC) { 1014 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); 1015 rc = qeth_l2_dev2br_an_set(card, true); 1016 if (rc == -EAGAIN) { 1017 /* Recoverable error, retry once */ 1018 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 1019 qeth_l2_dev2br_fdb_flush(card); 1020 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); 1021 rc = qeth_l2_dev2br_an_set(card, true); 1022 } 1023 if (rc) { 1024 netdev_err(card->dev, 1025 "failed to enable bridge learning_sync: %d\n", 1026 rc); 1027 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 1028 qeth_l2_dev2br_fdb_flush(card); 1029 priv->brport_features ^= BR_LEARNING_SYNC; 1030 } 1031 } else { 1032 dev_warn(&card->gdev->dev, 1033 "bridge learning_sync not supported\n"); 1034 priv->brport_features ^= BR_LEARNING_SYNC; 1035 } 1036 } 1037 } 1038 1039 #ifdef CONFIG_QETH_OSN 1040 static void qeth_osn_assist_cb(struct qeth_card *card, 1041 struct qeth_cmd_buffer *iob, 1042 unsigned int data_length) 1043 { 1044 qeth_notify_cmd(iob, 0); 1045 qeth_put_cmd(iob); 1046 } 1047 1048 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1049 { 1050 struct qeth_cmd_buffer *iob; 1051 struct qeth_card *card; 1052 1053 if (data_len < 0) 1054 return -EINVAL; 1055 if (!dev) 1056 return -ENODEV; 1057 card = dev->ml_priv; 1058 if (!card) 1059 return -ENODEV; 1060 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1061 if (!qeth_card_hw_is_reachable(card)) 1062 return -ENODEV; 1063 1064 iob = qeth_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_len, 1, 1065 QETH_IPA_TIMEOUT); 1066 if (!iob) 1067 return -ENOMEM; 1068 1069 qeth_prepare_ipa_cmd(card, iob, (u16) data_len, NULL); 1070 1071 memcpy(__ipa_cmd(iob), data, data_len); 1072 iob->callback = qeth_osn_assist_cb; 1073 return qeth_send_ipa_cmd(card, iob, NULL, NULL); 1074 } 1075 EXPORT_SYMBOL(qeth_osn_assist); 1076 1077 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1078 int (*assist_cb)(struct net_device *, void *), 1079 int (*data_cb)(struct sk_buff *)) 1080 { 1081 struct qeth_card *card; 1082 char bus_id[16]; 1083 u16 devno; 1084 1085 memcpy(&devno, read_dev_no, 2); 1086 sprintf(bus_id, "0.0.%04x", devno); 1087 card = qeth_get_card_by_busid(bus_id); 1088 if (!card || !IS_OSN(card)) 1089 return -ENODEV; 1090 *dev = card->dev; 1091 1092 QETH_CARD_TEXT(card, 2, "osnreg"); 1093 if ((assist_cb == NULL) || (data_cb == NULL)) 1094 return -EINVAL; 1095 card->osn_info.assist_cb = assist_cb; 1096 card->osn_info.data_cb = data_cb; 1097 return 0; 1098 } 1099 EXPORT_SYMBOL(qeth_osn_register); 1100 1101 void qeth_osn_deregister(struct net_device *dev) 1102 { 1103 struct qeth_card *card; 1104 1105 if (!dev) 1106 return; 1107 card = dev->ml_priv; 1108 if (!card) 1109 return; 1110 QETH_CARD_TEXT(card, 2, "osndereg"); 1111 card->osn_info.assist_cb = NULL; 1112 card->osn_info.data_cb = NULL; 1113 } 1114 EXPORT_SYMBOL(qeth_osn_deregister); 1115 #endif 1116 1117 /* SETBRIDGEPORT support, async notifications */ 1118 1119 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1120 1121 /** 1122 * qeth_bridge_emit_host_event() - bridgeport address change notification 1123 * @card: qeth_card structure pointer, for udev events. 1124 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1125 * and reset token and addr_lnid are unused and may be NULL. 1126 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1127 * object, 0 - addition of an object. 1128 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1129 * @token: "network token" structure identifying physical address of the port. 1130 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1131 * 1132 * This function is called when registrations and deregistrations are 1133 * reported by the hardware, and also when notifications are enabled - 1134 * for all currently registered addresses. 1135 */ 1136 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1137 enum qeth_an_event_type evtype, 1138 u8 code, 1139 struct net_if_token *token, 1140 struct mac_addr_lnid *addr_lnid) 1141 { 1142 char str[7][32]; 1143 char *env[8]; 1144 int i = 0; 1145 1146 switch (evtype) { 1147 case anev_reg_unreg: 1148 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1149 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1150 ? "deregister" : "register"); 1151 env[i] = str[i]; i++; 1152 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1153 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1154 addr_lnid->lnid); 1155 env[i] = str[i]; i++; 1156 } 1157 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1158 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1159 addr_lnid->mac); 1160 env[i] = str[i]; i++; 1161 } 1162 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1163 token->cssid, token->ssid, token->devnum); 1164 env[i] = str[i]; i++; 1165 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1166 env[i] = str[i]; i++; 1167 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1168 token->chpid); 1169 env[i] = str[i]; i++; 1170 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1171 env[i] = str[i]; i++; 1172 break; 1173 case anev_abort: 1174 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1175 env[i] = str[i]; i++; 1176 break; 1177 case anev_reset: 1178 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1179 env[i] = str[i]; i++; 1180 break; 1181 } 1182 env[i] = NULL; 1183 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1184 } 1185 1186 struct qeth_bridge_state_data { 1187 struct work_struct worker; 1188 struct qeth_card *card; 1189 u8 role; 1190 u8 state; 1191 }; 1192 1193 static void qeth_bridge_state_change_worker(struct work_struct *work) 1194 { 1195 struct qeth_bridge_state_data *data = 1196 container_of(work, struct qeth_bridge_state_data, worker); 1197 char env_locrem[32]; 1198 char env_role[32]; 1199 char env_state[32]; 1200 char *env[] = { 1201 env_locrem, 1202 env_role, 1203 env_state, 1204 NULL 1205 }; 1206 1207 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1208 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1209 (data->role == QETH_SBP_ROLE_NONE) ? "none" : 1210 (data->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1211 (data->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1212 "<INVALID>"); 1213 snprintf(env_state, sizeof(env_state), "STATE=%s", 1214 (data->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1215 (data->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1216 (data->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1217 "<INVALID>"); 1218 kobject_uevent_env(&data->card->gdev->dev.kobj, 1219 KOBJ_CHANGE, env); 1220 kfree(data); 1221 } 1222 1223 static void qeth_bridge_state_change(struct qeth_card *card, 1224 struct qeth_ipa_cmd *cmd) 1225 { 1226 struct qeth_sbp_port_data *qports = &cmd->data.sbp.data.port_data; 1227 struct qeth_bridge_state_data *data; 1228 1229 QETH_CARD_TEXT(card, 2, "brstchng"); 1230 if (qports->num_entries == 0) { 1231 QETH_CARD_TEXT(card, 2, "BPempty"); 1232 return; 1233 } 1234 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1235 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1236 return; 1237 } 1238 1239 data = kzalloc(sizeof(*data), GFP_ATOMIC); 1240 if (!data) { 1241 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1242 return; 1243 } 1244 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1245 data->card = card; 1246 /* Information for the local port: */ 1247 data->role = qports->entry[0].role; 1248 data->state = qports->entry[0].state; 1249 1250 queue_work(card->event_wq, &data->worker); 1251 } 1252 1253 struct qeth_addr_change_data { 1254 struct delayed_work dwork; 1255 struct qeth_card *card; 1256 struct qeth_ipacmd_addr_change ac_event; 1257 }; 1258 1259 static void qeth_l2_dev2br_worker(struct work_struct *work) 1260 { 1261 struct delayed_work *dwork = to_delayed_work(work); 1262 struct qeth_addr_change_data *data; 1263 struct qeth_card *card; 1264 struct qeth_priv *priv; 1265 unsigned int i; 1266 int rc; 1267 1268 data = container_of(dwork, struct qeth_addr_change_data, dwork); 1269 card = data->card; 1270 priv = netdev_priv(card->dev); 1271 1272 QETH_CARD_TEXT(card, 4, "dev2brew"); 1273 1274 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE) 1275 goto free; 1276 1277 if (data->ac_event.lost_event_mask) { 1278 /* Potential re-config in progress, try again later: */ 1279 if (!rtnl_trylock()) { 1280 queue_delayed_work(card->event_wq, dwork, 1281 msecs_to_jiffies(100)); 1282 return; 1283 } 1284 1285 if (!netif_device_present(card->dev)) { 1286 rtnl_unlock(); 1287 goto free; 1288 } 1289 1290 QETH_DBF_MESSAGE(3, 1291 "Address change notification overflow on device %x\n", 1292 CARD_DEVID(card)); 1293 /* Card fdb and bridge fdb are out of sync, card has stopped 1294 * notifications (no need to drain_workqueue). Purge all 1295 * 'extern_learn' entries from the parent bridge and restart 1296 * the notifications. 1297 */ 1298 qeth_l2_dev2br_fdb_flush(card); 1299 rc = qeth_l2_dev2br_an_set(card, true); 1300 if (rc) { 1301 /* TODO: if we want to retry after -EAGAIN, be 1302 * aware there could be stale entries in the 1303 * workqueue now, that need to be drained. 1304 * For now we give up: 1305 */ 1306 netdev_err(card->dev, 1307 "bridge learning_sync failed to recover: %d\n", 1308 rc); 1309 WRITE_ONCE(card->info.pnso_mode, 1310 QETH_PNSO_NONE); 1311 /* To remove fdb entries reported by an_set: */ 1312 qeth_l2_dev2br_fdb_flush(card); 1313 priv->brport_features ^= BR_LEARNING_SYNC; 1314 } else { 1315 QETH_DBF_MESSAGE(3, 1316 "Address Notification resynced on device %x\n", 1317 CARD_DEVID(card)); 1318 } 1319 1320 rtnl_unlock(); 1321 } else { 1322 for (i = 0; i < data->ac_event.num_entries; i++) { 1323 struct qeth_ipacmd_addr_change_entry *entry = 1324 &data->ac_event.entry[i]; 1325 qeth_l2_dev2br_fdb_notify(card, 1326 entry->change_code, 1327 &entry->token, 1328 &entry->addr_lnid); 1329 } 1330 } 1331 1332 free: 1333 kfree(data); 1334 } 1335 1336 static void qeth_addr_change_event_worker(struct work_struct *work) 1337 { 1338 struct delayed_work *dwork = to_delayed_work(work); 1339 struct qeth_addr_change_data *data; 1340 struct qeth_card *card; 1341 int i; 1342 1343 data = container_of(dwork, struct qeth_addr_change_data, dwork); 1344 card = data->card; 1345 1346 QETH_CARD_TEXT(data->card, 4, "adrchgew"); 1347 1348 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE) 1349 goto free; 1350 1351 if (data->ac_event.lost_event_mask) { 1352 /* Potential re-config in progress, try again later: */ 1353 if (!mutex_trylock(&card->sbp_lock)) { 1354 queue_delayed_work(card->event_wq, dwork, 1355 msecs_to_jiffies(100)); 1356 return; 1357 } 1358 1359 dev_info(&data->card->gdev->dev, 1360 "Address change notification stopped on %s (%s)\n", 1361 netdev_name(card->dev), 1362 (data->ac_event.lost_event_mask == 0x01) 1363 ? "Overflow" 1364 : (data->ac_event.lost_event_mask == 0x02) 1365 ? "Bridge port state change" 1366 : "Unknown reason"); 1367 1368 data->card->options.sbp.hostnotification = 0; 1369 card->info.pnso_mode = QETH_PNSO_NONE; 1370 mutex_unlock(&data->card->sbp_lock); 1371 qeth_bridge_emit_host_event(data->card, anev_abort, 1372 0, NULL, NULL); 1373 } else 1374 for (i = 0; i < data->ac_event.num_entries; i++) { 1375 struct qeth_ipacmd_addr_change_entry *entry = 1376 &data->ac_event.entry[i]; 1377 qeth_bridge_emit_host_event(data->card, 1378 anev_reg_unreg, 1379 entry->change_code, 1380 &entry->token, 1381 &entry->addr_lnid); 1382 } 1383 1384 free: 1385 kfree(data); 1386 } 1387 1388 static void qeth_addr_change_event(struct qeth_card *card, 1389 struct qeth_ipa_cmd *cmd) 1390 { 1391 struct qeth_ipacmd_addr_change *hostevs = 1392 &cmd->data.addrchange; 1393 struct qeth_addr_change_data *data; 1394 int extrasize; 1395 1396 if (card->info.pnso_mode == QETH_PNSO_NONE) 1397 return; 1398 1399 QETH_CARD_TEXT(card, 4, "adrchgev"); 1400 if (cmd->hdr.return_code != 0x0000) { 1401 if (cmd->hdr.return_code == 0x0010) { 1402 if (hostevs->lost_event_mask == 0x00) 1403 hostevs->lost_event_mask = 0xff; 1404 } else { 1405 QETH_CARD_TEXT_(card, 2, "ACHN%04x", 1406 cmd->hdr.return_code); 1407 return; 1408 } 1409 } 1410 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1411 hostevs->num_entries; 1412 data = kzalloc(sizeof(struct qeth_addr_change_data) + extrasize, 1413 GFP_ATOMIC); 1414 if (!data) { 1415 QETH_CARD_TEXT(card, 2, "ACNalloc"); 1416 return; 1417 } 1418 if (card->info.pnso_mode == QETH_PNSO_BRIDGEPORT) 1419 INIT_DELAYED_WORK(&data->dwork, qeth_addr_change_event_worker); 1420 else 1421 INIT_DELAYED_WORK(&data->dwork, qeth_l2_dev2br_worker); 1422 data->card = card; 1423 memcpy(&data->ac_event, hostevs, 1424 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1425 queue_delayed_work(card->event_wq, &data->dwork, 0); 1426 } 1427 1428 /* SETBRIDGEPORT support; sending commands */ 1429 1430 struct _qeth_sbp_cbctl { 1431 union { 1432 u32 supported; 1433 struct { 1434 enum qeth_sbp_roles *role; 1435 enum qeth_sbp_states *state; 1436 } qports; 1437 } data; 1438 }; 1439 1440 static int qeth_bridgeport_makerc(struct qeth_card *card, 1441 struct qeth_ipa_cmd *cmd) 1442 { 1443 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp; 1444 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code; 1445 u16 ipa_rc = cmd->hdr.return_code; 1446 u16 sbp_rc = sbp->hdr.return_code; 1447 int rc; 1448 1449 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS) 1450 return 0; 1451 1452 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) || 1453 (!IS_IQD(card) && ipa_rc == sbp_rc)) { 1454 switch (sbp_rc) { 1455 case IPA_RC_SUCCESS: 1456 rc = 0; 1457 break; 1458 case IPA_RC_L2_UNSUPPORTED_CMD: 1459 case IPA_RC_UNSUPPORTED_COMMAND: 1460 rc = -EOPNOTSUPP; 1461 break; 1462 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1463 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1464 rc = -ENODEV; /* maybe not the best code here? */ 1465 dev_err(&card->gdev->dev, 1466 "The device is not configured as a Bridge Port\n"); 1467 break; 1468 case IPA_RC_SBP_OSA_OS_MISMATCH: 1469 case IPA_RC_SBP_IQD_OS_MISMATCH: 1470 rc = -EPERM; 1471 dev_err(&card->gdev->dev, 1472 "A Bridge Port is already configured by a different operating system\n"); 1473 break; 1474 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1475 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1476 switch (setcmd) { 1477 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1478 rc = -EEXIST; 1479 dev_err(&card->gdev->dev, 1480 "The LAN already has a primary Bridge Port\n"); 1481 break; 1482 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1483 rc = -EBUSY; 1484 dev_err(&card->gdev->dev, 1485 "The device is already a primary Bridge Port\n"); 1486 break; 1487 default: 1488 rc = -EIO; 1489 } 1490 break; 1491 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1492 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1493 rc = -EBUSY; 1494 dev_err(&card->gdev->dev, 1495 "The device is already a secondary Bridge Port\n"); 1496 break; 1497 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1498 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1499 rc = -EEXIST; 1500 dev_err(&card->gdev->dev, 1501 "The LAN cannot have more secondary Bridge Ports\n"); 1502 break; 1503 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1504 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1505 rc = -EBUSY; 1506 dev_err(&card->gdev->dev, 1507 "The device is already a primary Bridge Port\n"); 1508 break; 1509 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1510 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1511 rc = -EACCES; 1512 dev_err(&card->gdev->dev, 1513 "The device is not authorized to be a Bridge Port\n"); 1514 break; 1515 default: 1516 rc = -EIO; 1517 } 1518 } else { 1519 switch (ipa_rc) { 1520 case IPA_RC_NOTSUPP: 1521 rc = -EOPNOTSUPP; 1522 break; 1523 case IPA_RC_UNSUPPORTED_COMMAND: 1524 rc = -EOPNOTSUPP; 1525 break; 1526 default: 1527 rc = -EIO; 1528 } 1529 } 1530 1531 if (rc) { 1532 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc); 1533 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc); 1534 } 1535 return rc; 1536 } 1537 1538 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1539 enum qeth_ipa_sbp_cmd sbp_cmd, 1540 unsigned int data_length) 1541 { 1542 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD : 1543 IPA_CMD_SETBRIDGEPORT_OSA; 1544 struct qeth_ipacmd_sbp_hdr *hdr; 1545 struct qeth_cmd_buffer *iob; 1546 1547 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE, 1548 data_length + 1549 offsetof(struct qeth_ipacmd_setbridgeport, 1550 data)); 1551 if (!iob) 1552 return iob; 1553 1554 hdr = &__ipa_cmd(iob)->data.sbp.hdr; 1555 hdr->cmdlength = sizeof(*hdr) + data_length; 1556 hdr->command_code = sbp_cmd; 1557 hdr->used_total = 1; 1558 hdr->seq_no = 1; 1559 return iob; 1560 } 1561 1562 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1563 struct qeth_reply *reply, unsigned long data) 1564 { 1565 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1566 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1567 int rc; 1568 1569 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1570 rc = qeth_bridgeport_makerc(card, cmd); 1571 if (rc) 1572 return rc; 1573 1574 cbctl->data.supported = 1575 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1576 return 0; 1577 } 1578 1579 /** 1580 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1581 * @card: qeth_card structure pointer. 1582 * 1583 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1584 * strucutre: card->options.sbp.supported_funcs. 1585 */ 1586 static void qeth_bridgeport_query_support(struct qeth_card *card) 1587 { 1588 struct qeth_cmd_buffer *iob; 1589 struct _qeth_sbp_cbctl cbctl; 1590 1591 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1592 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1593 SBP_DATA_SIZEOF(query_cmds_supp)); 1594 if (!iob) 1595 return; 1596 1597 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1598 &cbctl)) { 1599 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1600 card->options.sbp.supported_funcs = 0; 1601 return; 1602 } 1603 card->options.sbp.supported_funcs = cbctl.data.supported; 1604 } 1605 1606 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1607 struct qeth_reply *reply, unsigned long data) 1608 { 1609 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1610 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1611 struct qeth_sbp_port_data *qports; 1612 int rc; 1613 1614 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1615 rc = qeth_bridgeport_makerc(card, cmd); 1616 if (rc) 1617 return rc; 1618 1619 qports = &cmd->data.sbp.data.port_data; 1620 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1621 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1622 return -EINVAL; 1623 } 1624 /* first entry contains the state of the local port */ 1625 if (qports->num_entries > 0) { 1626 if (cbctl->data.qports.role) 1627 *cbctl->data.qports.role = qports->entry[0].role; 1628 if (cbctl->data.qports.state) 1629 *cbctl->data.qports.state = qports->entry[0].state; 1630 } 1631 return 0; 1632 } 1633 1634 /** 1635 * qeth_bridgeport_query_ports() - query local bridgeport status. 1636 * @card: qeth_card structure pointer. 1637 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1638 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1639 * 1640 * Returns negative errno-compatible error indication or 0 on success. 1641 * 1642 * 'role' and 'state' are not updated in case of hardware operation failure. 1643 */ 1644 int qeth_bridgeport_query_ports(struct qeth_card *card, 1645 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1646 { 1647 struct qeth_cmd_buffer *iob; 1648 struct _qeth_sbp_cbctl cbctl = { 1649 .data = { 1650 .qports = { 1651 .role = role, 1652 .state = state, 1653 }, 1654 }, 1655 }; 1656 1657 QETH_CARD_TEXT(card, 2, "brqports"); 1658 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1659 return -EOPNOTSUPP; 1660 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1661 if (!iob) 1662 return -ENOMEM; 1663 1664 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1665 &cbctl); 1666 } 1667 1668 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1669 struct qeth_reply *reply, unsigned long data) 1670 { 1671 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1672 1673 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1674 return qeth_bridgeport_makerc(card, cmd); 1675 } 1676 1677 /** 1678 * qeth_bridgeport_setrole() - Assign primary role to the port. 1679 * @card: qeth_card structure pointer. 1680 * @role: Role to assign. 1681 * 1682 * Returns negative errno-compatible error indication or 0 on success. 1683 */ 1684 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1685 { 1686 struct qeth_cmd_buffer *iob; 1687 enum qeth_ipa_sbp_cmd setcmd; 1688 unsigned int cmdlength = 0; 1689 1690 QETH_CARD_TEXT(card, 2, "brsetrol"); 1691 switch (role) { 1692 case QETH_SBP_ROLE_NONE: 1693 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1694 break; 1695 case QETH_SBP_ROLE_PRIMARY: 1696 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1697 cmdlength = SBP_DATA_SIZEOF(set_primary); 1698 break; 1699 case QETH_SBP_ROLE_SECONDARY: 1700 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1701 break; 1702 default: 1703 return -EINVAL; 1704 } 1705 if (!(card->options.sbp.supported_funcs & setcmd)) 1706 return -EOPNOTSUPP; 1707 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1708 if (!iob) 1709 return -ENOMEM; 1710 1711 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL); 1712 } 1713 1714 static void qeth_bridgeport_an_set_cb(void *priv, 1715 struct chsc_pnso_naid_l2 *entry) 1716 { 1717 struct qeth_card *card = (struct qeth_card *)priv; 1718 u8 code; 1719 1720 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1721 if (entry->addr_lnid.lnid < VLAN_N_VID) 1722 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1723 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1724 (struct net_if_token *)&entry->nit, 1725 (struct mac_addr_lnid *)&entry->addr_lnid); 1726 } 1727 1728 /** 1729 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1730 * @card: qeth_card structure pointer. 1731 * @enable: 0 - disable, non-zero - enable notifications 1732 * 1733 * Returns negative errno-compatible error indication or 0 on success. 1734 * 1735 * On enable, emits a series of address notifications udev events for all 1736 * currently registered hosts. 1737 */ 1738 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 1739 { 1740 int rc; 1741 1742 if (!card->options.sbp.supported_funcs) 1743 return -EOPNOTSUPP; 1744 1745 if (enable) { 1746 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 1747 qeth_l2_set_pnso_mode(card, QETH_PNSO_BRIDGEPORT); 1748 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 1, 1749 qeth_bridgeport_an_set_cb, card); 1750 if (rc) 1751 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 1752 } else { 1753 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 0, NULL, NULL); 1754 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 1755 } 1756 return rc; 1757 } 1758 1759 /* VNIC Characteristics support */ 1760 1761 /* handle VNICC IPA command return codes; convert to error codes */ 1762 static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc) 1763 { 1764 int rc; 1765 1766 switch (ipa_rc) { 1767 case IPA_RC_SUCCESS: 1768 return ipa_rc; 1769 case IPA_RC_L2_UNSUPPORTED_CMD: 1770 case IPA_RC_NOTSUPP: 1771 rc = -EOPNOTSUPP; 1772 break; 1773 case IPA_RC_VNICC_OOSEQ: 1774 rc = -EALREADY; 1775 break; 1776 case IPA_RC_VNICC_VNICBP: 1777 rc = -EBUSY; 1778 break; 1779 case IPA_RC_L2_ADDR_TABLE_FULL: 1780 rc = -ENOSPC; 1781 break; 1782 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 1783 rc = -EACCES; 1784 break; 1785 default: 1786 rc = -EIO; 1787 } 1788 1789 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 1790 return rc; 1791 } 1792 1793 /* generic VNICC request call back */ 1794 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 1795 struct qeth_reply *reply, 1796 unsigned long data) 1797 { 1798 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1799 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 1800 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command; 1801 1802 QETH_CARD_TEXT(card, 2, "vniccrcb"); 1803 if (cmd->hdr.return_code) 1804 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code); 1805 /* return results to caller */ 1806 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported; 1807 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled; 1808 1809 if (sub_cmd == IPA_VNICC_QUERY_CMDS) 1810 *(u32 *)reply->param = rep->data.query_cmds.sup_cmds; 1811 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT) 1812 *(u32 *)reply->param = rep->data.getset_timeout.timeout; 1813 1814 return 0; 1815 } 1816 1817 static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card, 1818 u32 vnicc_cmd, 1819 unsigned int data_length) 1820 { 1821 struct qeth_ipacmd_vnicc_hdr *hdr; 1822 struct qeth_cmd_buffer *iob; 1823 1824 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE, 1825 data_length + 1826 offsetof(struct qeth_ipacmd_vnicc, data)); 1827 if (!iob) 1828 return NULL; 1829 1830 hdr = &__ipa_cmd(iob)->data.vnicc.hdr; 1831 hdr->data_length = sizeof(*hdr) + data_length; 1832 hdr->sub_command = vnicc_cmd; 1833 return iob; 1834 } 1835 1836 /* VNICC query VNIC characteristics request */ 1837 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 1838 { 1839 struct qeth_cmd_buffer *iob; 1840 1841 QETH_CARD_TEXT(card, 2, "vniccqch"); 1842 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0); 1843 if (!iob) 1844 return -ENOMEM; 1845 1846 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1847 } 1848 1849 /* VNICC query sub commands request */ 1850 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 1851 u32 *sup_cmds) 1852 { 1853 struct qeth_cmd_buffer *iob; 1854 1855 QETH_CARD_TEXT(card, 2, "vniccqcm"); 1856 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS, 1857 VNICC_DATA_SIZEOF(query_cmds)); 1858 if (!iob) 1859 return -ENOMEM; 1860 1861 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char; 1862 1863 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, sup_cmds); 1864 } 1865 1866 /* VNICC enable/disable characteristic request */ 1867 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 1868 u32 cmd) 1869 { 1870 struct qeth_cmd_buffer *iob; 1871 1872 QETH_CARD_TEXT(card, 2, "vniccedc"); 1873 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char)); 1874 if (!iob) 1875 return -ENOMEM; 1876 1877 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char; 1878 1879 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1880 } 1881 1882 /* VNICC get/set timeout for characteristic request */ 1883 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 1884 u32 cmd, u32 *timeout) 1885 { 1886 struct qeth_vnicc_getset_timeout *getset_timeout; 1887 struct qeth_cmd_buffer *iob; 1888 1889 QETH_CARD_TEXT(card, 2, "vniccgst"); 1890 iob = qeth_l2_vnicc_build_cmd(card, cmd, 1891 VNICC_DATA_SIZEOF(getset_timeout)); 1892 if (!iob) 1893 return -ENOMEM; 1894 1895 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout; 1896 getset_timeout->vnic_char = vnicc; 1897 1898 if (cmd == IPA_VNICC_SET_TIMEOUT) 1899 getset_timeout->timeout = *timeout; 1900 1901 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, timeout); 1902 } 1903 1904 /* recover user timeout setting */ 1905 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 1906 u32 *timeout) 1907 { 1908 if (card->options.vnicc.sup_chars & vnicc && 1909 card->options.vnicc.getset_timeout_sup & vnicc && 1910 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 1911 timeout)) 1912 return false; 1913 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 1914 return true; 1915 } 1916 1917 /* set current VNICC flag state; called from sysfs store function */ 1918 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 1919 { 1920 int rc = 0; 1921 u32 cmd; 1922 1923 QETH_CARD_TEXT(card, 2, "vniccsch"); 1924 1925 /* check if characteristic and enable/disable are supported */ 1926 if (!(card->options.vnicc.sup_chars & vnicc) || 1927 !(card->options.vnicc.set_char_sup & vnicc)) 1928 return -EOPNOTSUPP; 1929 1930 if (qeth_bridgeport_is_in_use(card)) 1931 return -EBUSY; 1932 1933 /* set enable/disable command and store wanted characteristic */ 1934 if (state) { 1935 cmd = IPA_VNICC_ENABLE; 1936 card->options.vnicc.wanted_chars |= vnicc; 1937 } else { 1938 cmd = IPA_VNICC_DISABLE; 1939 card->options.vnicc.wanted_chars &= ~vnicc; 1940 } 1941 1942 /* do we need to do anything? */ 1943 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 1944 return rc; 1945 1946 /* if card is not ready, simply stop here */ 1947 if (!qeth_card_hw_is_reachable(card)) { 1948 if (state) 1949 card->options.vnicc.cur_chars |= vnicc; 1950 else 1951 card->options.vnicc.cur_chars &= ~vnicc; 1952 return rc; 1953 } 1954 1955 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 1956 if (rc) 1957 card->options.vnicc.wanted_chars = 1958 card->options.vnicc.cur_chars; 1959 else { 1960 /* successful online VNICC change; handle special cases */ 1961 if (state && vnicc == QETH_VNICC_RX_BCAST) 1962 card->options.vnicc.rx_bcast_enabled = true; 1963 if (!state && vnicc == QETH_VNICC_LEARNING) 1964 qeth_l2_vnicc_recover_timeout(card, vnicc, 1965 &card->options.vnicc.learning_timeout); 1966 } 1967 1968 return rc; 1969 } 1970 1971 /* get current VNICC flag state; called from sysfs show function */ 1972 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 1973 { 1974 int rc = 0; 1975 1976 QETH_CARD_TEXT(card, 2, "vniccgch"); 1977 1978 /* check if characteristic is supported */ 1979 if (!(card->options.vnicc.sup_chars & vnicc)) 1980 return -EOPNOTSUPP; 1981 1982 if (qeth_bridgeport_is_in_use(card)) 1983 return -EBUSY; 1984 1985 /* if card is ready, query current VNICC state */ 1986 if (qeth_card_hw_is_reachable(card)) 1987 rc = qeth_l2_vnicc_query_chars(card); 1988 1989 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 1990 return rc; 1991 } 1992 1993 /* set VNICC timeout; called from sysfs store function. Currently, only learning 1994 * supports timeout 1995 */ 1996 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 1997 { 1998 int rc = 0; 1999 2000 QETH_CARD_TEXT(card, 2, "vniccsto"); 2001 2002 /* check if characteristic and set_timeout are supported */ 2003 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2004 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2005 return -EOPNOTSUPP; 2006 2007 if (qeth_bridgeport_is_in_use(card)) 2008 return -EBUSY; 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 /* check if characteristic and get_timeout are supported */ 2039 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2040 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2041 return -EOPNOTSUPP; 2042 2043 if (qeth_bridgeport_is_in_use(card)) 2044 return -EBUSY; 2045 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 static bool _qeth_l2_vnicc_is_in_use(struct qeth_card *card) 2058 { 2059 if (!card->options.vnicc.sup_chars) 2060 return false; 2061 /* default values are only OK if rx_bcast was not enabled by user 2062 * or the card is offline. 2063 */ 2064 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 2065 if (!card->options.vnicc.rx_bcast_enabled || 2066 !qeth_card_hw_is_reachable(card)) 2067 return false; 2068 } 2069 return true; 2070 } 2071 2072 /** 2073 * qeth_bridgeport_allowed - are any qeth_bridgeport functions allowed? 2074 * @card: qeth_card structure pointer 2075 * 2076 * qeth_bridgeport functionality is mutually exclusive with usage of the 2077 * VNIC Characteristics and dev2br address notifications 2078 */ 2079 bool qeth_bridgeport_allowed(struct qeth_card *card) 2080 { 2081 struct qeth_priv *priv = netdev_priv(card->dev); 2082 2083 return (!_qeth_l2_vnicc_is_in_use(card) && 2084 !(priv->brport_features & BR_LEARNING_SYNC)); 2085 } 2086 2087 /* recover user characteristic setting */ 2088 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2089 bool enable) 2090 { 2091 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2092 2093 if (card->options.vnicc.sup_chars & vnicc && 2094 card->options.vnicc.set_char_sup & vnicc && 2095 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2096 return false; 2097 card->options.vnicc.wanted_chars &= ~vnicc; 2098 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2099 return true; 2100 } 2101 2102 /* (re-)initialize VNICC */ 2103 static void qeth_l2_vnicc_init(struct qeth_card *card) 2104 { 2105 u32 *timeout = &card->options.vnicc.learning_timeout; 2106 bool enable, error = false; 2107 unsigned int chars_len, i; 2108 unsigned long chars_tmp; 2109 u32 sup_cmds, vnicc; 2110 2111 QETH_CARD_TEXT(card, 2, "vniccini"); 2112 /* reset rx_bcast */ 2113 card->options.vnicc.rx_bcast_enabled = 0; 2114 /* initial query and storage of VNIC characteristics */ 2115 if (qeth_l2_vnicc_query_chars(card)) { 2116 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2117 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2118 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2119 /* fail quietly if user didn't change the default config */ 2120 card->options.vnicc.sup_chars = 0; 2121 card->options.vnicc.cur_chars = 0; 2122 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2123 return; 2124 } 2125 /* get supported commands for each supported characteristic */ 2126 chars_tmp = card->options.vnicc.sup_chars; 2127 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2128 for_each_set_bit(i, &chars_tmp, chars_len) { 2129 vnicc = BIT(i); 2130 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) { 2131 sup_cmds = 0; 2132 error = true; 2133 } 2134 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) && 2135 (sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2136 card->options.vnicc.getset_timeout_sup |= vnicc; 2137 else 2138 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2139 if ((sup_cmds & IPA_VNICC_ENABLE) && 2140 (sup_cmds & IPA_VNICC_DISABLE)) 2141 card->options.vnicc.set_char_sup |= vnicc; 2142 else 2143 card->options.vnicc.set_char_sup &= ~vnicc; 2144 } 2145 /* enforce assumed default values and recover settings, if changed */ 2146 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2147 timeout); 2148 /* Change chars, if necessary */ 2149 chars_tmp = card->options.vnicc.wanted_chars ^ 2150 card->options.vnicc.cur_chars; 2151 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2152 for_each_set_bit(i, &chars_tmp, chars_len) { 2153 vnicc = BIT(i); 2154 enable = card->options.vnicc.wanted_chars & vnicc; 2155 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2156 } 2157 if (error) 2158 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2159 } 2160 2161 /* configure default values of VNIC characteristics */ 2162 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2163 { 2164 /* characteristics values */ 2165 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2166 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2167 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2168 /* supported commands */ 2169 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2170 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2171 /* settings wanted by users */ 2172 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2173 } 2174 2175 static const struct device_type qeth_l2_devtype = { 2176 .name = "qeth_layer2", 2177 .groups = qeth_l2_attr_groups, 2178 }; 2179 2180 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 2181 { 2182 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2183 int rc; 2184 2185 if (IS_OSN(card)) 2186 dev_notice(&gdev->dev, "OSN support will be dropped in 2021\n"); 2187 2188 qeth_l2_vnicc_set_defaults(card); 2189 mutex_init(&card->sbp_lock); 2190 2191 if (gdev->dev.type == &qeth_generic_devtype) { 2192 rc = device_add_groups(&gdev->dev, qeth_l2_attr_groups); 2193 if (rc) 2194 return rc; 2195 } 2196 2197 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work); 2198 return 0; 2199 } 2200 2201 static void qeth_l2_remove_device(struct ccwgroup_device *gdev) 2202 { 2203 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2204 2205 if (gdev->dev.type == &qeth_generic_devtype) 2206 device_remove_groups(&gdev->dev, qeth_l2_attr_groups); 2207 qeth_set_allowed_threads(card, 0, 1); 2208 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 2209 2210 if (gdev->state == CCWGROUP_ONLINE) 2211 qeth_set_offline(card, card->discipline, false); 2212 2213 cancel_work_sync(&card->close_dev_work); 2214 if (card->dev->reg_state == NETREG_REGISTERED) 2215 unregister_netdev(card->dev); 2216 } 2217 2218 static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok) 2219 { 2220 struct net_device *dev = card->dev; 2221 int rc = 0; 2222 2223 qeth_l2_detect_dev2br_support(card); 2224 2225 mutex_lock(&card->sbp_lock); 2226 qeth_bridgeport_query_support(card); 2227 if (card->options.sbp.supported_funcs) { 2228 qeth_l2_setup_bridgeport_attrs(card); 2229 dev_info(&card->gdev->dev, 2230 "The device represents a Bridge Capable Port\n"); 2231 } 2232 mutex_unlock(&card->sbp_lock); 2233 2234 qeth_l2_register_dev_addr(card); 2235 2236 /* for the rx_bcast characteristic, init VNICC after setmac */ 2237 qeth_l2_vnicc_init(card); 2238 2239 qeth_l2_trace_features(card); 2240 2241 /* softsetup */ 2242 QETH_CARD_TEXT(card, 2, "softsetp"); 2243 2244 card->state = CARD_STATE_SOFTSETUP; 2245 2246 qeth_set_allowed_threads(card, 0xffffffff, 0); 2247 2248 if (dev->reg_state != NETREG_REGISTERED) { 2249 rc = qeth_l2_setup_netdev(card); 2250 if (rc) 2251 goto err_setup; 2252 2253 if (carrier_ok) 2254 netif_carrier_on(dev); 2255 } else { 2256 rtnl_lock(); 2257 rc = qeth_set_real_num_tx_queues(card, 2258 qeth_tx_actual_queues(card)); 2259 if (rc) { 2260 rtnl_unlock(); 2261 goto err_set_queues; 2262 } 2263 2264 if (carrier_ok) 2265 netif_carrier_on(dev); 2266 else 2267 netif_carrier_off(dev); 2268 2269 netif_device_attach(dev); 2270 qeth_enable_hw_features(dev); 2271 qeth_l2_enable_brport_features(card); 2272 2273 if (card->info.open_when_online) { 2274 card->info.open_when_online = 0; 2275 dev_open(dev, NULL); 2276 } 2277 rtnl_unlock(); 2278 } 2279 return 0; 2280 2281 err_set_queues: 2282 err_setup: 2283 qeth_set_allowed_threads(card, 0, 1); 2284 card->state = CARD_STATE_DOWN; 2285 return rc; 2286 } 2287 2288 static void qeth_l2_set_offline(struct qeth_card *card) 2289 { 2290 struct qeth_priv *priv = netdev_priv(card->dev); 2291 2292 qeth_set_allowed_threads(card, 0, 1); 2293 qeth_l2_drain_rx_mode_cache(card); 2294 2295 if (card->state == CARD_STATE_SOFTSETUP) 2296 card->state = CARD_STATE_DOWN; 2297 2298 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 2299 if (priv->brport_features & BR_LEARNING_SYNC) 2300 qeth_l2_dev2br_fdb_flush(card); 2301 } 2302 2303 /* Returns zero if the command is successfully "consumed" */ 2304 static int qeth_l2_control_event(struct qeth_card *card, 2305 struct qeth_ipa_cmd *cmd) 2306 { 2307 switch (cmd->hdr.command) { 2308 case IPA_CMD_SETBRIDGEPORT_OSA: 2309 case IPA_CMD_SETBRIDGEPORT_IQD: 2310 if (cmd->data.sbp.hdr.command_code == 2311 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 2312 qeth_bridge_state_change(card, cmd); 2313 return 0; 2314 } 2315 2316 return 1; 2317 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 2318 qeth_addr_change_event(card, cmd); 2319 return 0; 2320 default: 2321 return 1; 2322 } 2323 } 2324 2325 const struct qeth_discipline qeth_l2_discipline = { 2326 .devtype = &qeth_l2_devtype, 2327 .setup = qeth_l2_probe_device, 2328 .remove = qeth_l2_remove_device, 2329 .set_online = qeth_l2_set_online, 2330 .set_offline = qeth_l2_set_offline, 2331 .do_ioctl = NULL, 2332 .control_event_handler = qeth_l2_control_event, 2333 }; 2334 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 2335 2336 static int __init qeth_l2_init(void) 2337 { 2338 pr_info("register layer 2 discipline\n"); 2339 return 0; 2340 } 2341 2342 static void __exit qeth_l2_exit(void) 2343 { 2344 pr_info("unregister layer 2 discipline\n"); 2345 } 2346 2347 module_init(qeth_l2_init); 2348 module_exit(qeth_l2_exit); 2349 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2350 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2351 MODULE_LICENSE("GPL"); 2352