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 rc = qeth_setadpparms_change_macaddr(card); 313 if (!rc) 314 goto out; 315 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n", 316 CARD_DEVID(card), rc); 317 QETH_CARD_TEXT_(card, 2, "1err%04x", rc); 318 319 /* Fall back once more, but some devices don't support a custom MAC 320 * address: 321 */ 322 if (IS_OSM(card) || IS_OSX(card)) 323 return (rc) ? rc : -EADDRNOTAVAIL; 324 eth_hw_addr_random(card->dev); 325 326 out: 327 QETH_CARD_HEX(card, 2, card->dev->dev_addr, card->dev->addr_len); 328 return 0; 329 } 330 331 static void qeth_l2_register_dev_addr(struct qeth_card *card) 332 { 333 if (!is_valid_ether_addr(card->dev->dev_addr)) 334 qeth_l2_request_initial_mac(card); 335 336 if (!qeth_l2_send_setmac(card, card->dev->dev_addr)) 337 card->info.dev_addr_is_registered = 1; 338 else 339 card->info.dev_addr_is_registered = 0; 340 } 341 342 static int qeth_l2_validate_addr(struct net_device *dev) 343 { 344 struct qeth_card *card = dev->ml_priv; 345 346 if (card->info.dev_addr_is_registered) 347 return eth_validate_addr(dev); 348 349 QETH_CARD_TEXT(card, 4, "nomacadr"); 350 return -EPERM; 351 } 352 353 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 354 { 355 struct sockaddr *addr = p; 356 struct qeth_card *card = dev->ml_priv; 357 u8 old_addr[ETH_ALEN]; 358 int rc = 0; 359 360 QETH_CARD_TEXT(card, 3, "setmac"); 361 362 if (IS_OSM(card) || IS_OSX(card)) { 363 QETH_CARD_TEXT(card, 3, "setmcTYP"); 364 return -EOPNOTSUPP; 365 } 366 QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); 367 if (!is_valid_ether_addr(addr->sa_data)) 368 return -EADDRNOTAVAIL; 369 370 /* don't register the same address twice */ 371 if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) && 372 card->info.dev_addr_is_registered) 373 return 0; 374 375 /* add the new address, switch over, drop the old */ 376 rc = qeth_l2_send_setmac(card, addr->sa_data); 377 if (rc) 378 return rc; 379 ether_addr_copy(old_addr, dev->dev_addr); 380 ether_addr_copy(dev->dev_addr, addr->sa_data); 381 382 if (card->info.dev_addr_is_registered) 383 qeth_l2_remove_mac(card, old_addr); 384 card->info.dev_addr_is_registered = 1; 385 return 0; 386 } 387 388 static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable) 389 { 390 int role; 391 int rc; 392 393 QETH_CARD_TEXT(card, 3, "pmisc2br"); 394 395 if (enable) { 396 if (card->options.sbp.reflect_promisc_primary) 397 role = QETH_SBP_ROLE_PRIMARY; 398 else 399 role = QETH_SBP_ROLE_SECONDARY; 400 } else 401 role = QETH_SBP_ROLE_NONE; 402 403 rc = qeth_bridgeport_setrole(card, role); 404 QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc); 405 if (!rc) { 406 card->options.sbp.role = role; 407 card->info.promisc_mode = enable; 408 } 409 } 410 411 static void qeth_l2_set_promisc_mode(struct qeth_card *card) 412 { 413 bool enable = card->dev->flags & IFF_PROMISC; 414 415 if (card->info.promisc_mode == enable) 416 return; 417 418 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) { 419 qeth_setadp_promisc_mode(card, enable); 420 } else { 421 mutex_lock(&card->sbp_lock); 422 if (card->options.sbp.reflect_promisc) 423 qeth_l2_promisc_to_bridge(card, enable); 424 mutex_unlock(&card->sbp_lock); 425 } 426 } 427 428 /* New MAC address is added to the hash table and marked to be written on card 429 * only if there is not in the hash table storage already 430 * 431 */ 432 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) 433 { 434 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 435 struct qeth_mac *mac; 436 437 hash_for_each_possible(card->rx_mode_addrs, mac, hnode, mac_hash) { 438 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { 439 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 440 return; 441 } 442 } 443 444 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 445 if (!mac) 446 return; 447 448 ether_addr_copy(mac->mac_addr, ha->addr); 449 mac->disp_flag = QETH_DISP_ADDR_ADD; 450 451 hash_add(card->rx_mode_addrs, &mac->hnode, mac_hash); 452 } 453 454 static void qeth_l2_rx_mode_work(struct work_struct *work) 455 { 456 struct qeth_card *card = container_of(work, struct qeth_card, 457 rx_mode_work); 458 struct net_device *dev = card->dev; 459 struct netdev_hw_addr *ha; 460 struct qeth_mac *mac; 461 struct hlist_node *tmp; 462 int i; 463 int rc; 464 465 QETH_CARD_TEXT(card, 3, "setmulti"); 466 467 netif_addr_lock_bh(dev); 468 netdev_for_each_mc_addr(ha, dev) 469 qeth_l2_add_mac(card, ha); 470 netdev_for_each_uc_addr(ha, dev) 471 qeth_l2_add_mac(card, ha); 472 netif_addr_unlock_bh(dev); 473 474 hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) { 475 switch (mac->disp_flag) { 476 case QETH_DISP_ADDR_DELETE: 477 qeth_l2_remove_mac(card, mac->mac_addr); 478 hash_del(&mac->hnode); 479 kfree(mac); 480 break; 481 case QETH_DISP_ADDR_ADD: 482 rc = qeth_l2_write_mac(card, mac->mac_addr); 483 if (rc) { 484 hash_del(&mac->hnode); 485 kfree(mac); 486 break; 487 } 488 fallthrough; 489 default: 490 /* for next call to set_rx_mode(): */ 491 mac->disp_flag = QETH_DISP_ADDR_DELETE; 492 } 493 } 494 495 qeth_l2_set_promisc_mode(card); 496 } 497 498 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 499 struct net_device *dev) 500 { 501 struct qeth_card *card = dev->ml_priv; 502 u16 txq = skb_get_queue_mapping(skb); 503 struct qeth_qdio_out_q *queue; 504 int rc; 505 506 if (!skb_is_gso(skb)) 507 qdisc_skb_cb(skb)->pkt_len = skb->len; 508 if (IS_IQD(card)) 509 txq = qeth_iqd_translate_txq(dev, txq); 510 queue = card->qdio.out_qs[txq]; 511 512 rc = qeth_xmit(card, skb, queue, vlan_get_protocol(skb), 513 qeth_l2_fill_header); 514 if (!rc) 515 return NETDEV_TX_OK; 516 517 QETH_TXQ_STAT_INC(queue, tx_dropped); 518 kfree_skb(skb); 519 return NETDEV_TX_OK; 520 } 521 522 static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb, 523 struct net_device *sb_dev) 524 { 525 struct qeth_card *card = dev->ml_priv; 526 527 if (IS_IQD(card)) 528 return qeth_iqd_select_queue(dev, skb, 529 qeth_get_ether_cast_type(skb), 530 sb_dev); 531 if (qeth_uses_tx_prio_queueing(card)) 532 return qeth_get_priority_queue(card, skb); 533 534 return netdev_pick_tx(dev, skb, sb_dev); 535 } 536 537 static void qeth_l2_set_rx_mode(struct net_device *dev) 538 { 539 struct qeth_card *card = dev->ml_priv; 540 541 schedule_work(&card->rx_mode_work); 542 } 543 544 /** 545 * qeth_l2_pnso() - perform network subchannel operation 546 * @card: qeth_card structure pointer 547 * @oc: Operation Code 548 * @cnc: Boolean Change-Notification Control 549 * @cb: Callback function will be executed for each element 550 * of the address list 551 * @priv: Pointer to pass to the callback function. 552 * 553 * Collects network information in a network address list and calls the 554 * callback function for every entry in the list. If "change-notification- 555 * control" is set, further changes in the address list will be reported 556 * via the IPA command. 557 */ 558 static int qeth_l2_pnso(struct qeth_card *card, u8 oc, int cnc, 559 void (*cb)(void *priv, struct chsc_pnso_naid_l2 *entry), 560 void *priv) 561 { 562 struct ccw_device *ddev = CARD_DDEV(card); 563 struct chsc_pnso_area *rr; 564 u32 prev_instance = 0; 565 int isfirstblock = 1; 566 int i, size, elems; 567 int rc; 568 569 rr = (struct chsc_pnso_area *)get_zeroed_page(GFP_KERNEL); 570 if (rr == NULL) 571 return -ENOMEM; 572 do { 573 QETH_CARD_TEXT(card, 2, "PNSO"); 574 /* on the first iteration, naihdr.resume_token will be zero */ 575 rc = ccw_device_pnso(ddev, rr, oc, rr->naihdr.resume_token, 576 cnc); 577 if (rc) 578 continue; 579 if (cb == NULL) 580 continue; 581 582 size = rr->naihdr.naids; 583 if (size != sizeof(struct chsc_pnso_naid_l2)) { 584 WARN_ON_ONCE(1); 585 continue; 586 } 587 588 elems = (rr->response.length - sizeof(struct chsc_header) - 589 sizeof(struct chsc_pnso_naihdr)) / size; 590 591 if (!isfirstblock && (rr->naihdr.instance != prev_instance)) { 592 /* Inform the caller that they need to scrap */ 593 /* the data that was already reported via cb */ 594 rc = -EAGAIN; 595 break; 596 } 597 isfirstblock = 0; 598 prev_instance = rr->naihdr.instance; 599 for (i = 0; i < elems; i++) 600 (*cb)(priv, &rr->entries[i]); 601 } while ((rc == -EBUSY) || (!rc && /* list stored */ 602 /* resume token is non-zero => list incomplete */ 603 (rr->naihdr.resume_token.t1 || rr->naihdr.resume_token.t2))); 604 605 if (rc) 606 QETH_CARD_TEXT_(card, 2, "PNrp%04x", rr->response.code); 607 608 free_page((unsigned long)rr); 609 return rc; 610 } 611 612 static bool qeth_is_my_net_if_token(struct qeth_card *card, 613 struct net_if_token *token) 614 { 615 return ((card->info.ddev_devno == token->devnum) && 616 (card->info.cssid == token->cssid) && 617 (card->info.iid == token->iid) && 618 (card->info.ssid == token->ssid) && 619 (card->info.chpid == token->chpid) && 620 (card->info.chid == token->chid)); 621 } 622 623 /** 624 * qeth_l2_dev2br_fdb_notify() - update fdb of master bridge 625 * @card: qeth_card structure pointer 626 * @code: event bitmask: high order bit 0x80 set to 627 * 1 - removal of an object 628 * 0 - addition of an object 629 * Object type(s): 630 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC 631 * @token: "network token" structure identifying 'physical' location 632 * of the target 633 * @addr_lnid: structure with MAC address and VLAN ID of the target 634 */ 635 static void qeth_l2_dev2br_fdb_notify(struct qeth_card *card, u8 code, 636 struct net_if_token *token, 637 struct mac_addr_lnid *addr_lnid) 638 { 639 struct switchdev_notifier_fdb_info info; 640 u8 ntfy_mac[ETH_ALEN]; 641 642 ether_addr_copy(ntfy_mac, addr_lnid->mac); 643 /* Ignore VLAN only changes */ 644 if (!(code & IPA_ADDR_CHANGE_CODE_MACADDR)) 645 return; 646 /* Ignore mcast entries */ 647 if (is_multicast_ether_addr(ntfy_mac)) 648 return; 649 /* Ignore my own addresses */ 650 if (qeth_is_my_net_if_token(card, token)) 651 return; 652 653 info.addr = ntfy_mac; 654 /* don't report VLAN IDs */ 655 info.vid = 0; 656 info.added_by_user = false; 657 info.offloaded = true; 658 659 if (code & IPA_ADDR_CHANGE_CODE_REMOVAL) { 660 call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE, 661 card->dev, &info.info, NULL); 662 QETH_CARD_TEXT(card, 4, "andelmac"); 663 QETH_CARD_TEXT_(card, 4, 664 "mc%012lx", ether_addr_to_u64(ntfy_mac)); 665 } else { 666 call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE, 667 card->dev, &info.info, NULL); 668 QETH_CARD_TEXT(card, 4, "anaddmac"); 669 QETH_CARD_TEXT_(card, 4, 670 "mc%012lx", ether_addr_to_u64(ntfy_mac)); 671 } 672 } 673 674 static void qeth_l2_dev2br_an_set_cb(void *priv, 675 struct chsc_pnso_naid_l2 *entry) 676 { 677 u8 code = IPA_ADDR_CHANGE_CODE_MACADDR; 678 struct qeth_card *card = priv; 679 680 if (entry->addr_lnid.lnid < VLAN_N_VID) 681 code |= IPA_ADDR_CHANGE_CODE_VLANID; 682 qeth_l2_dev2br_fdb_notify(card, code, 683 (struct net_if_token *)&entry->nit, 684 (struct mac_addr_lnid *)&entry->addr_lnid); 685 } 686 687 /** 688 * qeth_l2_dev2br_an_set() - 689 * Enable or disable 'dev to bridge network address notification' 690 * @card: qeth_card structure pointer 691 * @enable: Enable or disable 'dev to bridge network address notification' 692 * 693 * Returns negative errno-compatible error indication or 0 on success. 694 * 695 * On enable, emits a series of address notifications for all 696 * currently registered hosts. 697 */ 698 static int qeth_l2_dev2br_an_set(struct qeth_card *card, bool enable) 699 { 700 int rc; 701 702 if (enable) { 703 QETH_CARD_TEXT(card, 2, "anseton"); 704 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 1, 705 qeth_l2_dev2br_an_set_cb, card); 706 if (rc == -EAGAIN) 707 /* address notification enabled, but inconsistent 708 * addresses reported -> disable address notification 709 */ 710 qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, 711 NULL, NULL); 712 } else { 713 QETH_CARD_TEXT(card, 2, "ansetoff"); 714 rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL); 715 } 716 717 return rc; 718 } 719 720 static int qeth_l2_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, 721 struct net_device *dev, u32 filter_mask, 722 int nlflags) 723 { 724 struct qeth_priv *priv = netdev_priv(dev); 725 struct qeth_card *card = dev->ml_priv; 726 u16 mode = BRIDGE_MODE_UNDEF; 727 728 /* Do not even show qeth devs that cannot do bridge_setlink */ 729 if (!priv->brport_hw_features || !netif_device_present(dev) || 730 qeth_bridgeport_is_in_use(card)) 731 return -EOPNOTSUPP; 732 733 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, 734 mode, priv->brport_features, 735 priv->brport_hw_features, 736 nlflags, filter_mask, NULL); 737 } 738 739 static const struct nla_policy qeth_brport_policy[IFLA_BRPORT_MAX + 1] = { 740 [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 }, 741 }; 742 743 /** 744 * qeth_l2_bridge_setlink() - set bridgeport attributes 745 * @dev: netdevice 746 * @nlh: netlink message header 747 * @flags: bridge flags (here: BRIDGE_FLAGS_SELF) 748 * @extack: extended ACK report struct 749 * 750 * Called under rtnl_lock 751 */ 752 static int qeth_l2_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, 753 u16 flags, struct netlink_ext_ack *extack) 754 { 755 struct qeth_priv *priv = netdev_priv(dev); 756 struct nlattr *bp_tb[IFLA_BRPORT_MAX + 1]; 757 struct qeth_card *card = dev->ml_priv; 758 struct nlattr *attr, *nested_attr; 759 bool enable, has_protinfo = false; 760 int rem1, rem2; 761 int rc; 762 763 if (!netif_device_present(dev)) 764 return -ENODEV; 765 766 nlmsg_for_each_attr(attr, nlh, sizeof(struct ifinfomsg), rem1) { 767 if (nla_type(attr) == IFLA_PROTINFO) { 768 rc = nla_parse_nested(bp_tb, IFLA_BRPORT_MAX, attr, 769 qeth_brport_policy, extack); 770 if (rc) 771 return rc; 772 has_protinfo = true; 773 } else if (nla_type(attr) == IFLA_AF_SPEC) { 774 nla_for_each_nested(nested_attr, attr, rem2) { 775 if (nla_type(nested_attr) == IFLA_BRIDGE_FLAGS) 776 continue; 777 NL_SET_ERR_MSG_ATTR(extack, nested_attr, 778 "Unsupported attribute"); 779 return -EINVAL; 780 } 781 } else { 782 NL_SET_ERR_MSG_ATTR(extack, attr, "Unsupported attribute"); 783 return -EINVAL; 784 } 785 } 786 if (!has_protinfo) 787 return 0; 788 if (!bp_tb[IFLA_BRPORT_LEARNING_SYNC]) 789 return -EINVAL; 790 if (!(priv->brport_hw_features & BR_LEARNING_SYNC)) { 791 NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC], 792 "Operation not supported by HW"); 793 return -EOPNOTSUPP; 794 } 795 if (!IS_ENABLED(CONFIG_NET_SWITCHDEV)) { 796 NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC], 797 "Requires NET_SWITCHDEV"); 798 return -EOPNOTSUPP; 799 } 800 enable = !!nla_get_u8(bp_tb[IFLA_BRPORT_LEARNING_SYNC]); 801 802 if (enable == !!(priv->brport_features & BR_LEARNING_SYNC)) 803 return 0; 804 805 mutex_lock(&card->sbp_lock); 806 /* do not change anything if BridgePort is enabled */ 807 if (qeth_bridgeport_is_in_use(card)) { 808 NL_SET_ERR_MSG(extack, "n/a (BridgePort)"); 809 rc = -EBUSY; 810 } else if (enable) { 811 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); 812 rc = qeth_l2_dev2br_an_set(card, true); 813 if (rc) 814 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 815 else 816 priv->brport_features |= BR_LEARNING_SYNC; 817 } else { 818 rc = qeth_l2_dev2br_an_set(card, false); 819 if (!rc) { 820 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 821 priv->brport_features ^= BR_LEARNING_SYNC; 822 qeth_l2_dev2br_fdb_flush(card); 823 } 824 } 825 mutex_unlock(&card->sbp_lock); 826 827 return rc; 828 } 829 830 static const struct net_device_ops qeth_l2_netdev_ops = { 831 .ndo_open = qeth_open, 832 .ndo_stop = qeth_stop, 833 .ndo_get_stats64 = qeth_get_stats64, 834 .ndo_start_xmit = qeth_l2_hard_start_xmit, 835 .ndo_features_check = qeth_features_check, 836 .ndo_select_queue = qeth_l2_select_queue, 837 .ndo_validate_addr = qeth_l2_validate_addr, 838 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 839 .ndo_eth_ioctl = qeth_do_ioctl, 840 .ndo_siocdevprivate = qeth_siocdevprivate, 841 .ndo_set_mac_address = qeth_l2_set_mac_address, 842 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 843 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 844 .ndo_tx_timeout = qeth_tx_timeout, 845 .ndo_fix_features = qeth_fix_features, 846 .ndo_set_features = qeth_set_features, 847 .ndo_bridge_getlink = qeth_l2_bridge_getlink, 848 .ndo_bridge_setlink = qeth_l2_bridge_setlink, 849 }; 850 851 static int qeth_l2_setup_netdev(struct qeth_card *card) 852 { 853 card->dev->needed_headroom = sizeof(struct qeth_hdr); 854 card->dev->netdev_ops = &qeth_l2_netdev_ops; 855 card->dev->priv_flags |= IFF_UNICAST_FLT; 856 857 if (IS_OSM(card)) { 858 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 859 } else { 860 if (!IS_VM_NIC(card)) 861 card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; 862 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 863 } 864 865 if (IS_OSD(card) && !IS_VM_NIC(card)) { 866 card->dev->features |= NETIF_F_SG; 867 /* OSA 3S and earlier has no RX/TX support */ 868 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 869 card->dev->hw_features |= NETIF_F_IP_CSUM; 870 card->dev->vlan_features |= NETIF_F_IP_CSUM; 871 } 872 } 873 if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { 874 card->dev->hw_features |= NETIF_F_IPV6_CSUM; 875 card->dev->vlan_features |= NETIF_F_IPV6_CSUM; 876 } 877 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) || 878 qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) { 879 card->dev->hw_features |= NETIF_F_RXCSUM; 880 card->dev->vlan_features |= NETIF_F_RXCSUM; 881 } 882 if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) { 883 card->dev->hw_features |= NETIF_F_TSO; 884 card->dev->vlan_features |= NETIF_F_TSO; 885 } 886 if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { 887 card->dev->hw_features |= NETIF_F_TSO6; 888 card->dev->vlan_features |= NETIF_F_TSO6; 889 } 890 891 if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) { 892 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso); 893 netif_keep_dst(card->dev); 894 netif_set_gso_max_size(card->dev, 895 PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)); 896 } 897 898 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 899 return register_netdev(card->dev); 900 } 901 902 static void qeth_l2_trace_features(struct qeth_card *card) 903 { 904 /* Set BridgePort features */ 905 QETH_CARD_TEXT(card, 2, "featuSBP"); 906 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 907 sizeof(card->options.sbp.supported_funcs)); 908 /* VNIC Characteristics features */ 909 QETH_CARD_TEXT(card, 2, "feaVNICC"); 910 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 911 sizeof(card->options.vnicc.sup_chars)); 912 } 913 914 static void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card) 915 { 916 if (!card->options.sbp.reflect_promisc && 917 card->options.sbp.role != QETH_SBP_ROLE_NONE) { 918 /* Conditional to avoid spurious error messages */ 919 qeth_bridgeport_setrole(card, card->options.sbp.role); 920 /* Let the callback function refresh the stored role value. */ 921 qeth_bridgeport_query_ports(card, &card->options.sbp.role, 922 NULL); 923 } 924 if (card->options.sbp.hostnotification) { 925 if (qeth_bridgeport_an_set(card, 1)) 926 card->options.sbp.hostnotification = 0; 927 } 928 } 929 930 /** 931 * qeth_l2_detect_dev2br_support() - 932 * Detect whether this card supports 'dev to bridge fdb network address 933 * change notification' and thus can support the learning_sync bridgeport 934 * attribute 935 * @card: qeth_card structure pointer 936 */ 937 static void qeth_l2_detect_dev2br_support(struct qeth_card *card) 938 { 939 struct qeth_priv *priv = netdev_priv(card->dev); 940 bool dev2br_supported; 941 942 QETH_CARD_TEXT(card, 2, "d2brsup"); 943 if (!IS_IQD(card)) 944 return; 945 946 /* dev2br requires valid cssid,iid,chid */ 947 dev2br_supported = card->info.ids_valid && 948 css_general_characteristics.enarf; 949 QETH_CARD_TEXT_(card, 2, "D2Bsup%02x", dev2br_supported); 950 951 if (dev2br_supported) 952 priv->brport_hw_features |= BR_LEARNING_SYNC; 953 else 954 priv->brport_hw_features &= ~BR_LEARNING_SYNC; 955 } 956 957 static void qeth_l2_enable_brport_features(struct qeth_card *card) 958 { 959 struct qeth_priv *priv = netdev_priv(card->dev); 960 int rc; 961 962 if (priv->brport_features & BR_LEARNING_SYNC) { 963 if (priv->brport_hw_features & BR_LEARNING_SYNC) { 964 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); 965 rc = qeth_l2_dev2br_an_set(card, true); 966 if (rc == -EAGAIN) { 967 /* Recoverable error, retry once */ 968 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 969 qeth_l2_dev2br_fdb_flush(card); 970 qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); 971 rc = qeth_l2_dev2br_an_set(card, true); 972 } 973 if (rc) { 974 netdev_err(card->dev, 975 "failed to enable bridge learning_sync: %d\n", 976 rc); 977 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 978 qeth_l2_dev2br_fdb_flush(card); 979 priv->brport_features ^= BR_LEARNING_SYNC; 980 } 981 } else { 982 dev_warn(&card->gdev->dev, 983 "bridge learning_sync not supported\n"); 984 priv->brport_features ^= BR_LEARNING_SYNC; 985 } 986 } 987 } 988 989 /* SETBRIDGEPORT support, async notifications */ 990 991 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 992 993 /** 994 * qeth_bridge_emit_host_event() - bridgeport address change notification 995 * @card: qeth_card structure pointer, for udev events. 996 * @evtype: "normal" register/unregister, or abort, or reset. For abort 997 * and reset token and addr_lnid are unused and may be NULL. 998 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 999 * object, 0 - addition of an object. 1000 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1001 * @token: "network token" structure identifying physical address of the port. 1002 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1003 * 1004 * This function is called when registrations and deregistrations are 1005 * reported by the hardware, and also when notifications are enabled - 1006 * for all currently registered addresses. 1007 */ 1008 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1009 enum qeth_an_event_type evtype, 1010 u8 code, 1011 struct net_if_token *token, 1012 struct mac_addr_lnid *addr_lnid) 1013 { 1014 char str[7][32]; 1015 char *env[8]; 1016 int i = 0; 1017 1018 switch (evtype) { 1019 case anev_reg_unreg: 1020 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1021 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1022 ? "deregister" : "register"); 1023 env[i] = str[i]; i++; 1024 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1025 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1026 addr_lnid->lnid); 1027 env[i] = str[i]; i++; 1028 } 1029 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1030 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1031 addr_lnid->mac); 1032 env[i] = str[i]; i++; 1033 } 1034 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1035 token->cssid, token->ssid, token->devnum); 1036 env[i] = str[i]; i++; 1037 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1038 env[i] = str[i]; i++; 1039 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1040 token->chpid); 1041 env[i] = str[i]; i++; 1042 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1043 env[i] = str[i]; i++; 1044 break; 1045 case anev_abort: 1046 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1047 env[i] = str[i]; i++; 1048 break; 1049 case anev_reset: 1050 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1051 env[i] = str[i]; i++; 1052 break; 1053 } 1054 env[i] = NULL; 1055 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1056 } 1057 1058 struct qeth_bridge_state_data { 1059 struct work_struct worker; 1060 struct qeth_card *card; 1061 u8 role; 1062 u8 state; 1063 }; 1064 1065 static void qeth_bridge_state_change_worker(struct work_struct *work) 1066 { 1067 struct qeth_bridge_state_data *data = 1068 container_of(work, struct qeth_bridge_state_data, worker); 1069 char env_locrem[32]; 1070 char env_role[32]; 1071 char env_state[32]; 1072 char *env[] = { 1073 env_locrem, 1074 env_role, 1075 env_state, 1076 NULL 1077 }; 1078 1079 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1080 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1081 (data->role == QETH_SBP_ROLE_NONE) ? "none" : 1082 (data->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1083 (data->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1084 "<INVALID>"); 1085 snprintf(env_state, sizeof(env_state), "STATE=%s", 1086 (data->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1087 (data->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1088 (data->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1089 "<INVALID>"); 1090 kobject_uevent_env(&data->card->gdev->dev.kobj, 1091 KOBJ_CHANGE, env); 1092 kfree(data); 1093 } 1094 1095 static void qeth_bridge_state_change(struct qeth_card *card, 1096 struct qeth_ipa_cmd *cmd) 1097 { 1098 struct qeth_sbp_port_data *qports = &cmd->data.sbp.data.port_data; 1099 struct qeth_bridge_state_data *data; 1100 1101 QETH_CARD_TEXT(card, 2, "brstchng"); 1102 if (qports->num_entries == 0) { 1103 QETH_CARD_TEXT(card, 2, "BPempty"); 1104 return; 1105 } 1106 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1107 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1108 return; 1109 } 1110 1111 data = kzalloc(sizeof(*data), GFP_ATOMIC); 1112 if (!data) { 1113 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1114 return; 1115 } 1116 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1117 data->card = card; 1118 /* Information for the local port: */ 1119 data->role = qports->entry[0].role; 1120 data->state = qports->entry[0].state; 1121 1122 queue_work(card->event_wq, &data->worker); 1123 } 1124 1125 struct qeth_addr_change_data { 1126 struct delayed_work dwork; 1127 struct qeth_card *card; 1128 struct qeth_ipacmd_addr_change ac_event; 1129 }; 1130 1131 static void qeth_l2_dev2br_worker(struct work_struct *work) 1132 { 1133 struct delayed_work *dwork = to_delayed_work(work); 1134 struct qeth_addr_change_data *data; 1135 struct qeth_card *card; 1136 struct qeth_priv *priv; 1137 unsigned int i; 1138 int rc; 1139 1140 data = container_of(dwork, struct qeth_addr_change_data, dwork); 1141 card = data->card; 1142 priv = netdev_priv(card->dev); 1143 1144 QETH_CARD_TEXT(card, 4, "dev2brew"); 1145 1146 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE) 1147 goto free; 1148 1149 if (data->ac_event.lost_event_mask) { 1150 /* Potential re-config in progress, try again later: */ 1151 if (!rtnl_trylock()) { 1152 queue_delayed_work(card->event_wq, dwork, 1153 msecs_to_jiffies(100)); 1154 return; 1155 } 1156 1157 if (!netif_device_present(card->dev)) { 1158 rtnl_unlock(); 1159 goto free; 1160 } 1161 1162 QETH_DBF_MESSAGE(3, 1163 "Address change notification overflow on device %x\n", 1164 CARD_DEVID(card)); 1165 /* Card fdb and bridge fdb are out of sync, card has stopped 1166 * notifications (no need to drain_workqueue). Purge all 1167 * 'extern_learn' entries from the parent bridge and restart 1168 * the notifications. 1169 */ 1170 qeth_l2_dev2br_fdb_flush(card); 1171 rc = qeth_l2_dev2br_an_set(card, true); 1172 if (rc) { 1173 /* TODO: if we want to retry after -EAGAIN, be 1174 * aware there could be stale entries in the 1175 * workqueue now, that need to be drained. 1176 * For now we give up: 1177 */ 1178 netdev_err(card->dev, 1179 "bridge learning_sync failed to recover: %d\n", 1180 rc); 1181 WRITE_ONCE(card->info.pnso_mode, 1182 QETH_PNSO_NONE); 1183 /* To remove fdb entries reported by an_set: */ 1184 qeth_l2_dev2br_fdb_flush(card); 1185 priv->brport_features ^= BR_LEARNING_SYNC; 1186 } else { 1187 QETH_DBF_MESSAGE(3, 1188 "Address Notification resynced on device %x\n", 1189 CARD_DEVID(card)); 1190 } 1191 1192 rtnl_unlock(); 1193 } else { 1194 for (i = 0; i < data->ac_event.num_entries; i++) { 1195 struct qeth_ipacmd_addr_change_entry *entry = 1196 &data->ac_event.entry[i]; 1197 qeth_l2_dev2br_fdb_notify(card, 1198 entry->change_code, 1199 &entry->token, 1200 &entry->addr_lnid); 1201 } 1202 } 1203 1204 free: 1205 kfree(data); 1206 } 1207 1208 static void qeth_addr_change_event_worker(struct work_struct *work) 1209 { 1210 struct delayed_work *dwork = to_delayed_work(work); 1211 struct qeth_addr_change_data *data; 1212 struct qeth_card *card; 1213 int i; 1214 1215 data = container_of(dwork, struct qeth_addr_change_data, dwork); 1216 card = data->card; 1217 1218 QETH_CARD_TEXT(data->card, 4, "adrchgew"); 1219 1220 if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE) 1221 goto free; 1222 1223 if (data->ac_event.lost_event_mask) { 1224 /* Potential re-config in progress, try again later: */ 1225 if (!mutex_trylock(&card->sbp_lock)) { 1226 queue_delayed_work(card->event_wq, dwork, 1227 msecs_to_jiffies(100)); 1228 return; 1229 } 1230 1231 dev_info(&data->card->gdev->dev, 1232 "Address change notification stopped on %s (%s)\n", 1233 netdev_name(card->dev), 1234 (data->ac_event.lost_event_mask == 0x01) 1235 ? "Overflow" 1236 : (data->ac_event.lost_event_mask == 0x02) 1237 ? "Bridge port state change" 1238 : "Unknown reason"); 1239 1240 data->card->options.sbp.hostnotification = 0; 1241 card->info.pnso_mode = QETH_PNSO_NONE; 1242 mutex_unlock(&data->card->sbp_lock); 1243 qeth_bridge_emit_host_event(data->card, anev_abort, 1244 0, NULL, NULL); 1245 } else 1246 for (i = 0; i < data->ac_event.num_entries; i++) { 1247 struct qeth_ipacmd_addr_change_entry *entry = 1248 &data->ac_event.entry[i]; 1249 qeth_bridge_emit_host_event(data->card, 1250 anev_reg_unreg, 1251 entry->change_code, 1252 &entry->token, 1253 &entry->addr_lnid); 1254 } 1255 1256 free: 1257 kfree(data); 1258 } 1259 1260 static void qeth_addr_change_event(struct qeth_card *card, 1261 struct qeth_ipa_cmd *cmd) 1262 { 1263 struct qeth_ipacmd_addr_change *hostevs = 1264 &cmd->data.addrchange; 1265 struct qeth_addr_change_data *data; 1266 int extrasize; 1267 1268 if (card->info.pnso_mode == QETH_PNSO_NONE) 1269 return; 1270 1271 QETH_CARD_TEXT(card, 4, "adrchgev"); 1272 if (cmd->hdr.return_code != 0x0000) { 1273 if (cmd->hdr.return_code == 0x0010) { 1274 if (hostevs->lost_event_mask == 0x00) 1275 hostevs->lost_event_mask = 0xff; 1276 } else { 1277 QETH_CARD_TEXT_(card, 2, "ACHN%04x", 1278 cmd->hdr.return_code); 1279 return; 1280 } 1281 } 1282 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1283 hostevs->num_entries; 1284 data = kzalloc(sizeof(struct qeth_addr_change_data) + extrasize, 1285 GFP_ATOMIC); 1286 if (!data) { 1287 QETH_CARD_TEXT(card, 2, "ACNalloc"); 1288 return; 1289 } 1290 if (card->info.pnso_mode == QETH_PNSO_BRIDGEPORT) 1291 INIT_DELAYED_WORK(&data->dwork, qeth_addr_change_event_worker); 1292 else 1293 INIT_DELAYED_WORK(&data->dwork, qeth_l2_dev2br_worker); 1294 data->card = card; 1295 memcpy(&data->ac_event, hostevs, 1296 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1297 queue_delayed_work(card->event_wq, &data->dwork, 0); 1298 } 1299 1300 /* SETBRIDGEPORT support; sending commands */ 1301 1302 struct _qeth_sbp_cbctl { 1303 union { 1304 u32 supported; 1305 struct { 1306 enum qeth_sbp_roles *role; 1307 enum qeth_sbp_states *state; 1308 } qports; 1309 } data; 1310 }; 1311 1312 static int qeth_bridgeport_makerc(struct qeth_card *card, 1313 struct qeth_ipa_cmd *cmd) 1314 { 1315 struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp; 1316 enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code; 1317 u16 ipa_rc = cmd->hdr.return_code; 1318 u16 sbp_rc = sbp->hdr.return_code; 1319 int rc; 1320 1321 if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS) 1322 return 0; 1323 1324 if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) || 1325 (!IS_IQD(card) && ipa_rc == sbp_rc)) { 1326 switch (sbp_rc) { 1327 case IPA_RC_SUCCESS: 1328 rc = 0; 1329 break; 1330 case IPA_RC_L2_UNSUPPORTED_CMD: 1331 case IPA_RC_UNSUPPORTED_COMMAND: 1332 rc = -EOPNOTSUPP; 1333 break; 1334 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1335 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1336 rc = -ENODEV; /* maybe not the best code here? */ 1337 dev_err(&card->gdev->dev, 1338 "The device is not configured as a Bridge Port\n"); 1339 break; 1340 case IPA_RC_SBP_OSA_OS_MISMATCH: 1341 case IPA_RC_SBP_IQD_OS_MISMATCH: 1342 rc = -EPERM; 1343 dev_err(&card->gdev->dev, 1344 "A Bridge Port is already configured by a different operating system\n"); 1345 break; 1346 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1347 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1348 switch (setcmd) { 1349 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1350 rc = -EEXIST; 1351 dev_err(&card->gdev->dev, 1352 "The LAN already has a primary Bridge Port\n"); 1353 break; 1354 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1355 rc = -EBUSY; 1356 dev_err(&card->gdev->dev, 1357 "The device is already a primary Bridge Port\n"); 1358 break; 1359 default: 1360 rc = -EIO; 1361 } 1362 break; 1363 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1364 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1365 rc = -EBUSY; 1366 dev_err(&card->gdev->dev, 1367 "The device is already a secondary Bridge Port\n"); 1368 break; 1369 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1370 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1371 rc = -EEXIST; 1372 dev_err(&card->gdev->dev, 1373 "The LAN cannot have more secondary Bridge Ports\n"); 1374 break; 1375 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1376 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1377 rc = -EBUSY; 1378 dev_err(&card->gdev->dev, 1379 "The device is already a primary Bridge Port\n"); 1380 break; 1381 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1382 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1383 rc = -EACCES; 1384 dev_err(&card->gdev->dev, 1385 "The device is not authorized to be a Bridge Port\n"); 1386 break; 1387 default: 1388 rc = -EIO; 1389 } 1390 } else { 1391 switch (ipa_rc) { 1392 case IPA_RC_NOTSUPP: 1393 rc = -EOPNOTSUPP; 1394 break; 1395 case IPA_RC_UNSUPPORTED_COMMAND: 1396 rc = -EOPNOTSUPP; 1397 break; 1398 default: 1399 rc = -EIO; 1400 } 1401 } 1402 1403 if (rc) { 1404 QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc); 1405 QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc); 1406 } 1407 return rc; 1408 } 1409 1410 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1411 enum qeth_ipa_sbp_cmd sbp_cmd, 1412 unsigned int data_length) 1413 { 1414 enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD : 1415 IPA_CMD_SETBRIDGEPORT_OSA; 1416 struct qeth_ipacmd_sbp_hdr *hdr; 1417 struct qeth_cmd_buffer *iob; 1418 1419 iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE, 1420 data_length + 1421 offsetof(struct qeth_ipacmd_setbridgeport, 1422 data)); 1423 if (!iob) 1424 return iob; 1425 1426 hdr = &__ipa_cmd(iob)->data.sbp.hdr; 1427 hdr->cmdlength = sizeof(*hdr) + data_length; 1428 hdr->command_code = sbp_cmd; 1429 hdr->used_total = 1; 1430 hdr->seq_no = 1; 1431 return iob; 1432 } 1433 1434 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1435 struct qeth_reply *reply, unsigned long data) 1436 { 1437 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1438 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1439 int rc; 1440 1441 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1442 rc = qeth_bridgeport_makerc(card, cmd); 1443 if (rc) 1444 return rc; 1445 1446 cbctl->data.supported = 1447 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1448 return 0; 1449 } 1450 1451 /** 1452 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1453 * @card: qeth_card structure pointer. 1454 * 1455 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1456 * strucutre: card->options.sbp.supported_funcs. 1457 */ 1458 static void qeth_bridgeport_query_support(struct qeth_card *card) 1459 { 1460 struct qeth_cmd_buffer *iob; 1461 struct _qeth_sbp_cbctl cbctl; 1462 1463 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1464 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1465 SBP_DATA_SIZEOF(query_cmds_supp)); 1466 if (!iob) 1467 return; 1468 1469 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1470 &cbctl)) { 1471 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1472 card->options.sbp.supported_funcs = 0; 1473 return; 1474 } 1475 card->options.sbp.supported_funcs = cbctl.data.supported; 1476 } 1477 1478 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1479 struct qeth_reply *reply, unsigned long data) 1480 { 1481 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1482 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1483 struct qeth_sbp_port_data *qports; 1484 int rc; 1485 1486 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1487 rc = qeth_bridgeport_makerc(card, cmd); 1488 if (rc) 1489 return rc; 1490 1491 qports = &cmd->data.sbp.data.port_data; 1492 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1493 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1494 return -EINVAL; 1495 } 1496 /* first entry contains the state of the local port */ 1497 if (qports->num_entries > 0) { 1498 if (cbctl->data.qports.role) 1499 *cbctl->data.qports.role = qports->entry[0].role; 1500 if (cbctl->data.qports.state) 1501 *cbctl->data.qports.state = qports->entry[0].state; 1502 } 1503 return 0; 1504 } 1505 1506 /** 1507 * qeth_bridgeport_query_ports() - query local bridgeport status. 1508 * @card: qeth_card structure pointer. 1509 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1510 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1511 * 1512 * Returns negative errno-compatible error indication or 0 on success. 1513 * 1514 * 'role' and 'state' are not updated in case of hardware operation failure. 1515 */ 1516 int qeth_bridgeport_query_ports(struct qeth_card *card, 1517 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1518 { 1519 struct qeth_cmd_buffer *iob; 1520 struct _qeth_sbp_cbctl cbctl = { 1521 .data = { 1522 .qports = { 1523 .role = role, 1524 .state = state, 1525 }, 1526 }, 1527 }; 1528 1529 QETH_CARD_TEXT(card, 2, "brqports"); 1530 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1531 return -EOPNOTSUPP; 1532 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1533 if (!iob) 1534 return -ENOMEM; 1535 1536 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1537 &cbctl); 1538 } 1539 1540 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1541 struct qeth_reply *reply, unsigned long data) 1542 { 1543 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1544 1545 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1546 return qeth_bridgeport_makerc(card, cmd); 1547 } 1548 1549 /** 1550 * qeth_bridgeport_setrole() - Assign primary role to the port. 1551 * @card: qeth_card structure pointer. 1552 * @role: Role to assign. 1553 * 1554 * Returns negative errno-compatible error indication or 0 on success. 1555 */ 1556 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1557 { 1558 struct qeth_cmd_buffer *iob; 1559 enum qeth_ipa_sbp_cmd setcmd; 1560 unsigned int cmdlength = 0; 1561 1562 QETH_CARD_TEXT(card, 2, "brsetrol"); 1563 switch (role) { 1564 case QETH_SBP_ROLE_NONE: 1565 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1566 break; 1567 case QETH_SBP_ROLE_PRIMARY: 1568 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1569 cmdlength = SBP_DATA_SIZEOF(set_primary); 1570 break; 1571 case QETH_SBP_ROLE_SECONDARY: 1572 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1573 break; 1574 default: 1575 return -EINVAL; 1576 } 1577 if (!(card->options.sbp.supported_funcs & setcmd)) 1578 return -EOPNOTSUPP; 1579 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1580 if (!iob) 1581 return -ENOMEM; 1582 1583 return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL); 1584 } 1585 1586 static void qeth_bridgeport_an_set_cb(void *priv, 1587 struct chsc_pnso_naid_l2 *entry) 1588 { 1589 struct qeth_card *card = (struct qeth_card *)priv; 1590 u8 code; 1591 1592 code = IPA_ADDR_CHANGE_CODE_MACADDR; 1593 if (entry->addr_lnid.lnid < VLAN_N_VID) 1594 code |= IPA_ADDR_CHANGE_CODE_VLANID; 1595 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 1596 (struct net_if_token *)&entry->nit, 1597 (struct mac_addr_lnid *)&entry->addr_lnid); 1598 } 1599 1600 /** 1601 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 1602 * @card: qeth_card structure pointer. 1603 * @enable: 0 - disable, non-zero - enable notifications 1604 * 1605 * Returns negative errno-compatible error indication or 0 on success. 1606 * 1607 * On enable, emits a series of address notifications udev events for all 1608 * currently registered hosts. 1609 */ 1610 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 1611 { 1612 int rc; 1613 1614 if (!card->options.sbp.supported_funcs) 1615 return -EOPNOTSUPP; 1616 1617 if (enable) { 1618 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 1619 qeth_l2_set_pnso_mode(card, QETH_PNSO_BRIDGEPORT); 1620 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 1, 1621 qeth_bridgeport_an_set_cb, card); 1622 if (rc) 1623 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 1624 } else { 1625 rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 0, NULL, NULL); 1626 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 1627 } 1628 return rc; 1629 } 1630 1631 /* VNIC Characteristics support */ 1632 1633 /* handle VNICC IPA command return codes; convert to error codes */ 1634 static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc) 1635 { 1636 int rc; 1637 1638 switch (ipa_rc) { 1639 case IPA_RC_SUCCESS: 1640 return ipa_rc; 1641 case IPA_RC_L2_UNSUPPORTED_CMD: 1642 case IPA_RC_NOTSUPP: 1643 rc = -EOPNOTSUPP; 1644 break; 1645 case IPA_RC_VNICC_OOSEQ: 1646 rc = -EALREADY; 1647 break; 1648 case IPA_RC_VNICC_VNICBP: 1649 rc = -EBUSY; 1650 break; 1651 case IPA_RC_L2_ADDR_TABLE_FULL: 1652 rc = -ENOSPC; 1653 break; 1654 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 1655 rc = -EACCES; 1656 break; 1657 default: 1658 rc = -EIO; 1659 } 1660 1661 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 1662 return rc; 1663 } 1664 1665 /* generic VNICC request call back */ 1666 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 1667 struct qeth_reply *reply, 1668 unsigned long data) 1669 { 1670 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1671 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 1672 u32 sub_cmd = cmd->data.vnicc.hdr.sub_command; 1673 1674 QETH_CARD_TEXT(card, 2, "vniccrcb"); 1675 if (cmd->hdr.return_code) 1676 return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code); 1677 /* return results to caller */ 1678 card->options.vnicc.sup_chars = rep->vnicc_cmds.supported; 1679 card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled; 1680 1681 if (sub_cmd == IPA_VNICC_QUERY_CMDS) 1682 *(u32 *)reply->param = rep->data.query_cmds.sup_cmds; 1683 else if (sub_cmd == IPA_VNICC_GET_TIMEOUT) 1684 *(u32 *)reply->param = rep->data.getset_timeout.timeout; 1685 1686 return 0; 1687 } 1688 1689 static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card, 1690 u32 vnicc_cmd, 1691 unsigned int data_length) 1692 { 1693 struct qeth_ipacmd_vnicc_hdr *hdr; 1694 struct qeth_cmd_buffer *iob; 1695 1696 iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE, 1697 data_length + 1698 offsetof(struct qeth_ipacmd_vnicc, data)); 1699 if (!iob) 1700 return NULL; 1701 1702 hdr = &__ipa_cmd(iob)->data.vnicc.hdr; 1703 hdr->data_length = sizeof(*hdr) + data_length; 1704 hdr->sub_command = vnicc_cmd; 1705 return iob; 1706 } 1707 1708 /* VNICC query VNIC characteristics request */ 1709 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 1710 { 1711 struct qeth_cmd_buffer *iob; 1712 1713 QETH_CARD_TEXT(card, 2, "vniccqch"); 1714 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0); 1715 if (!iob) 1716 return -ENOMEM; 1717 1718 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1719 } 1720 1721 /* VNICC query sub commands request */ 1722 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 1723 u32 *sup_cmds) 1724 { 1725 struct qeth_cmd_buffer *iob; 1726 1727 QETH_CARD_TEXT(card, 2, "vniccqcm"); 1728 iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS, 1729 VNICC_DATA_SIZEOF(query_cmds)); 1730 if (!iob) 1731 return -ENOMEM; 1732 1733 __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char; 1734 1735 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, sup_cmds); 1736 } 1737 1738 /* VNICC enable/disable characteristic request */ 1739 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 1740 u32 cmd) 1741 { 1742 struct qeth_cmd_buffer *iob; 1743 1744 QETH_CARD_TEXT(card, 2, "vniccedc"); 1745 iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char)); 1746 if (!iob) 1747 return -ENOMEM; 1748 1749 __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char; 1750 1751 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); 1752 } 1753 1754 /* VNICC get/set timeout for characteristic request */ 1755 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 1756 u32 cmd, u32 *timeout) 1757 { 1758 struct qeth_vnicc_getset_timeout *getset_timeout; 1759 struct qeth_cmd_buffer *iob; 1760 1761 QETH_CARD_TEXT(card, 2, "vniccgst"); 1762 iob = qeth_l2_vnicc_build_cmd(card, cmd, 1763 VNICC_DATA_SIZEOF(getset_timeout)); 1764 if (!iob) 1765 return -ENOMEM; 1766 1767 getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout; 1768 getset_timeout->vnic_char = vnicc; 1769 1770 if (cmd == IPA_VNICC_SET_TIMEOUT) 1771 getset_timeout->timeout = *timeout; 1772 1773 return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, timeout); 1774 } 1775 1776 /* recover user timeout setting */ 1777 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 1778 u32 *timeout) 1779 { 1780 if (card->options.vnicc.sup_chars & vnicc && 1781 card->options.vnicc.getset_timeout_sup & vnicc && 1782 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 1783 timeout)) 1784 return false; 1785 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 1786 return true; 1787 } 1788 1789 /* set current VNICC flag state; called from sysfs store function */ 1790 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 1791 { 1792 int rc = 0; 1793 u32 cmd; 1794 1795 QETH_CARD_TEXT(card, 2, "vniccsch"); 1796 1797 /* check if characteristic and enable/disable are supported */ 1798 if (!(card->options.vnicc.sup_chars & vnicc) || 1799 !(card->options.vnicc.set_char_sup & vnicc)) 1800 return -EOPNOTSUPP; 1801 1802 if (qeth_bridgeport_is_in_use(card)) 1803 return -EBUSY; 1804 1805 /* set enable/disable command and store wanted characteristic */ 1806 if (state) { 1807 cmd = IPA_VNICC_ENABLE; 1808 card->options.vnicc.wanted_chars |= vnicc; 1809 } else { 1810 cmd = IPA_VNICC_DISABLE; 1811 card->options.vnicc.wanted_chars &= ~vnicc; 1812 } 1813 1814 /* do we need to do anything? */ 1815 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 1816 return rc; 1817 1818 /* if card is not ready, simply stop here */ 1819 if (!qeth_card_hw_is_reachable(card)) { 1820 if (state) 1821 card->options.vnicc.cur_chars |= vnicc; 1822 else 1823 card->options.vnicc.cur_chars &= ~vnicc; 1824 return rc; 1825 } 1826 1827 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 1828 if (rc) 1829 card->options.vnicc.wanted_chars = 1830 card->options.vnicc.cur_chars; 1831 else { 1832 /* successful online VNICC change; handle special cases */ 1833 if (state && vnicc == QETH_VNICC_RX_BCAST) 1834 card->options.vnicc.rx_bcast_enabled = true; 1835 if (!state && vnicc == QETH_VNICC_LEARNING) 1836 qeth_l2_vnicc_recover_timeout(card, vnicc, 1837 &card->options.vnicc.learning_timeout); 1838 } 1839 1840 return rc; 1841 } 1842 1843 /* get current VNICC flag state; called from sysfs show function */ 1844 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 1845 { 1846 int rc = 0; 1847 1848 QETH_CARD_TEXT(card, 2, "vniccgch"); 1849 1850 /* check if characteristic is supported */ 1851 if (!(card->options.vnicc.sup_chars & vnicc)) 1852 return -EOPNOTSUPP; 1853 1854 if (qeth_bridgeport_is_in_use(card)) 1855 return -EBUSY; 1856 1857 /* if card is ready, query current VNICC state */ 1858 if (qeth_card_hw_is_reachable(card)) 1859 rc = qeth_l2_vnicc_query_chars(card); 1860 1861 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 1862 return rc; 1863 } 1864 1865 /* set VNICC timeout; called from sysfs store function. Currently, only learning 1866 * supports timeout 1867 */ 1868 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 1869 { 1870 int rc = 0; 1871 1872 QETH_CARD_TEXT(card, 2, "vniccsto"); 1873 1874 /* check if characteristic and set_timeout are supported */ 1875 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 1876 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 1877 return -EOPNOTSUPP; 1878 1879 if (qeth_bridgeport_is_in_use(card)) 1880 return -EBUSY; 1881 1882 /* do we need to do anything? */ 1883 if (card->options.vnicc.learning_timeout == timeout) 1884 return rc; 1885 1886 /* if card is not ready, simply store the value internally and return */ 1887 if (!qeth_card_hw_is_reachable(card)) { 1888 card->options.vnicc.learning_timeout = timeout; 1889 return rc; 1890 } 1891 1892 /* send timeout value to card; if successful, store value internally */ 1893 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 1894 IPA_VNICC_SET_TIMEOUT, &timeout); 1895 if (!rc) 1896 card->options.vnicc.learning_timeout = timeout; 1897 1898 return rc; 1899 } 1900 1901 /* get current VNICC timeout; called from sysfs show function. Currently, only 1902 * learning supports timeout 1903 */ 1904 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 1905 { 1906 int rc = 0; 1907 1908 QETH_CARD_TEXT(card, 2, "vniccgto"); 1909 1910 /* check if characteristic and get_timeout are supported */ 1911 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 1912 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 1913 return -EOPNOTSUPP; 1914 1915 if (qeth_bridgeport_is_in_use(card)) 1916 return -EBUSY; 1917 1918 /* if card is ready, get timeout. Otherwise, just return stored value */ 1919 *timeout = card->options.vnicc.learning_timeout; 1920 if (qeth_card_hw_is_reachable(card)) 1921 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 1922 IPA_VNICC_GET_TIMEOUT, 1923 timeout); 1924 1925 return rc; 1926 } 1927 1928 /* check if VNICC is currently enabled */ 1929 static bool _qeth_l2_vnicc_is_in_use(struct qeth_card *card) 1930 { 1931 if (!card->options.vnicc.sup_chars) 1932 return false; 1933 /* default values are only OK if rx_bcast was not enabled by user 1934 * or the card is offline. 1935 */ 1936 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 1937 if (!card->options.vnicc.rx_bcast_enabled || 1938 !qeth_card_hw_is_reachable(card)) 1939 return false; 1940 } 1941 return true; 1942 } 1943 1944 /** 1945 * qeth_bridgeport_allowed - are any qeth_bridgeport functions allowed? 1946 * @card: qeth_card structure pointer 1947 * 1948 * qeth_bridgeport functionality is mutually exclusive with usage of the 1949 * VNIC Characteristics and dev2br address notifications 1950 */ 1951 bool qeth_bridgeport_allowed(struct qeth_card *card) 1952 { 1953 struct qeth_priv *priv = netdev_priv(card->dev); 1954 1955 return (!_qeth_l2_vnicc_is_in_use(card) && 1956 !(priv->brport_features & BR_LEARNING_SYNC)); 1957 } 1958 1959 /* recover user characteristic setting */ 1960 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 1961 bool enable) 1962 { 1963 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 1964 1965 if (card->options.vnicc.sup_chars & vnicc && 1966 card->options.vnicc.set_char_sup & vnicc && 1967 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 1968 return false; 1969 card->options.vnicc.wanted_chars &= ~vnicc; 1970 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 1971 return true; 1972 } 1973 1974 /* (re-)initialize VNICC */ 1975 static void qeth_l2_vnicc_init(struct qeth_card *card) 1976 { 1977 u32 *timeout = &card->options.vnicc.learning_timeout; 1978 bool enable, error = false; 1979 unsigned int chars_len, i; 1980 unsigned long chars_tmp; 1981 u32 sup_cmds, vnicc; 1982 1983 QETH_CARD_TEXT(card, 2, "vniccini"); 1984 /* reset rx_bcast */ 1985 card->options.vnicc.rx_bcast_enabled = 0; 1986 /* initial query and storage of VNIC characteristics */ 1987 if (qeth_l2_vnicc_query_chars(card)) { 1988 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 1989 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 1990 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 1991 /* fail quietly if user didn't change the default config */ 1992 card->options.vnicc.sup_chars = 0; 1993 card->options.vnicc.cur_chars = 0; 1994 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 1995 return; 1996 } 1997 /* get supported commands for each supported characteristic */ 1998 chars_tmp = card->options.vnicc.sup_chars; 1999 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2000 for_each_set_bit(i, &chars_tmp, chars_len) { 2001 vnicc = BIT(i); 2002 if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) { 2003 sup_cmds = 0; 2004 error = true; 2005 } 2006 if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) && 2007 (sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2008 card->options.vnicc.getset_timeout_sup |= vnicc; 2009 else 2010 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2011 if ((sup_cmds & IPA_VNICC_ENABLE) && 2012 (sup_cmds & IPA_VNICC_DISABLE)) 2013 card->options.vnicc.set_char_sup |= vnicc; 2014 else 2015 card->options.vnicc.set_char_sup &= ~vnicc; 2016 } 2017 /* enforce assumed default values and recover settings, if changed */ 2018 error |= qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2019 timeout); 2020 /* Change chars, if necessary */ 2021 chars_tmp = card->options.vnicc.wanted_chars ^ 2022 card->options.vnicc.cur_chars; 2023 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2024 for_each_set_bit(i, &chars_tmp, chars_len) { 2025 vnicc = BIT(i); 2026 enable = card->options.vnicc.wanted_chars & vnicc; 2027 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2028 } 2029 if (error) 2030 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2031 } 2032 2033 /* configure default values of VNIC characteristics */ 2034 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2035 { 2036 /* characteristics values */ 2037 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2038 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2039 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2040 /* supported commands */ 2041 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2042 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2043 /* settings wanted by users */ 2044 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2045 } 2046 2047 static const struct device_type qeth_l2_devtype = { 2048 .name = "qeth_layer2", 2049 .groups = qeth_l2_attr_groups, 2050 }; 2051 2052 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 2053 { 2054 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2055 int rc; 2056 2057 qeth_l2_vnicc_set_defaults(card); 2058 mutex_init(&card->sbp_lock); 2059 2060 if (gdev->dev.type) { 2061 rc = device_add_groups(&gdev->dev, qeth_l2_attr_groups); 2062 if (rc) 2063 return rc; 2064 } else { 2065 gdev->dev.type = &qeth_l2_devtype; 2066 } 2067 2068 INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work); 2069 return 0; 2070 } 2071 2072 static void qeth_l2_remove_device(struct ccwgroup_device *gdev) 2073 { 2074 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 2075 2076 if (gdev->dev.type != &qeth_l2_devtype) 2077 device_remove_groups(&gdev->dev, qeth_l2_attr_groups); 2078 2079 qeth_set_allowed_threads(card, 0, 1); 2080 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 2081 2082 if (gdev->state == CCWGROUP_ONLINE) 2083 qeth_set_offline(card, card->discipline, false); 2084 2085 cancel_work_sync(&card->close_dev_work); 2086 if (card->dev->reg_state == NETREG_REGISTERED) 2087 unregister_netdev(card->dev); 2088 } 2089 2090 static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok) 2091 { 2092 struct net_device *dev = card->dev; 2093 int rc = 0; 2094 2095 qeth_l2_detect_dev2br_support(card); 2096 2097 mutex_lock(&card->sbp_lock); 2098 qeth_bridgeport_query_support(card); 2099 if (card->options.sbp.supported_funcs) { 2100 qeth_l2_setup_bridgeport_attrs(card); 2101 dev_info(&card->gdev->dev, 2102 "The device represents a Bridge Capable Port\n"); 2103 } 2104 mutex_unlock(&card->sbp_lock); 2105 2106 qeth_l2_register_dev_addr(card); 2107 2108 /* for the rx_bcast characteristic, init VNICC after setmac */ 2109 qeth_l2_vnicc_init(card); 2110 2111 qeth_l2_trace_features(card); 2112 2113 /* softsetup */ 2114 QETH_CARD_TEXT(card, 2, "softsetp"); 2115 2116 card->state = CARD_STATE_SOFTSETUP; 2117 2118 qeth_set_allowed_threads(card, 0xffffffff, 0); 2119 2120 if (dev->reg_state != NETREG_REGISTERED) { 2121 rc = qeth_l2_setup_netdev(card); 2122 if (rc) 2123 goto err_setup; 2124 2125 if (carrier_ok) 2126 netif_carrier_on(dev); 2127 } else { 2128 rtnl_lock(); 2129 rc = qeth_set_real_num_tx_queues(card, 2130 qeth_tx_actual_queues(card)); 2131 if (rc) { 2132 rtnl_unlock(); 2133 goto err_set_queues; 2134 } 2135 2136 if (carrier_ok) 2137 netif_carrier_on(dev); 2138 else 2139 netif_carrier_off(dev); 2140 2141 netif_device_attach(dev); 2142 qeth_enable_hw_features(dev); 2143 qeth_l2_enable_brport_features(card); 2144 2145 if (card->info.open_when_online) { 2146 card->info.open_when_online = 0; 2147 dev_open(dev, NULL); 2148 } 2149 rtnl_unlock(); 2150 } 2151 return 0; 2152 2153 err_set_queues: 2154 err_setup: 2155 qeth_set_allowed_threads(card, 0, 1); 2156 card->state = CARD_STATE_DOWN; 2157 return rc; 2158 } 2159 2160 static void qeth_l2_set_offline(struct qeth_card *card) 2161 { 2162 struct qeth_priv *priv = netdev_priv(card->dev); 2163 2164 qeth_set_allowed_threads(card, 0, 1); 2165 qeth_l2_drain_rx_mode_cache(card); 2166 2167 if (card->state == CARD_STATE_SOFTSETUP) 2168 card->state = CARD_STATE_DOWN; 2169 2170 qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); 2171 if (priv->brport_features & BR_LEARNING_SYNC) 2172 qeth_l2_dev2br_fdb_flush(card); 2173 } 2174 2175 /* Returns zero if the command is successfully "consumed" */ 2176 static int qeth_l2_control_event(struct qeth_card *card, 2177 struct qeth_ipa_cmd *cmd) 2178 { 2179 switch (cmd->hdr.command) { 2180 case IPA_CMD_SETBRIDGEPORT_OSA: 2181 case IPA_CMD_SETBRIDGEPORT_IQD: 2182 if (cmd->data.sbp.hdr.command_code == 2183 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 2184 qeth_bridge_state_change(card, cmd); 2185 return 0; 2186 } 2187 2188 return 1; 2189 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 2190 qeth_addr_change_event(card, cmd); 2191 return 0; 2192 default: 2193 return 1; 2194 } 2195 } 2196 2197 const struct qeth_discipline qeth_l2_discipline = { 2198 .setup = qeth_l2_probe_device, 2199 .remove = qeth_l2_remove_device, 2200 .set_online = qeth_l2_set_online, 2201 .set_offline = qeth_l2_set_offline, 2202 .do_ioctl = NULL, 2203 .control_event_handler = qeth_l2_control_event, 2204 }; 2205 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 2206 2207 static int __init qeth_l2_init(void) 2208 { 2209 pr_info("register layer 2 discipline\n"); 2210 return 0; 2211 } 2212 2213 static void __exit qeth_l2_exit(void) 2214 { 2215 pr_info("unregister layer 2 discipline\n"); 2216 } 2217 2218 module_init(qeth_l2_init); 2219 module_exit(qeth_l2_exit); 2220 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2221 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2222 MODULE_LICENSE("GPL"); 2223