1 /* 2 * Copyright IBM Corp. 2007, 2009 3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 4 * Frank Pavlic <fpavlic@de.ibm.com>, 5 * Thomas Spatzier <tspat@de.ibm.com>, 6 * Frank Blaschka <frank.blaschka@de.ibm.com> 7 */ 8 9 #define KMSG_COMPONENT "qeth" 10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 11 12 #include <linux/module.h> 13 #include <linux/moduleparam.h> 14 #include <linux/string.h> 15 #include <linux/errno.h> 16 #include <linux/kernel.h> 17 #include <linux/slab.h> 18 #include <linux/etherdevice.h> 19 #include <linux/ip.h> 20 #include <linux/list.h> 21 #include <linux/hash.h> 22 #include <linux/hashtable.h> 23 #include <linux/string.h> 24 #include <asm/setup.h> 25 #include "qeth_core.h" 26 #include "qeth_l2.h" 27 28 static int qeth_l2_set_offline(struct ccwgroup_device *); 29 static int qeth_l2_stop(struct net_device *); 30 static void qeth_l2_set_rx_mode(struct net_device *); 31 static void qeth_bridgeport_query_support(struct qeth_card *card); 32 static void qeth_bridge_state_change(struct qeth_card *card, 33 struct qeth_ipa_cmd *cmd); 34 static void qeth_bridge_host_event(struct qeth_card *card, 35 struct qeth_ipa_cmd *cmd); 36 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); 37 static void qeth_l2_vnicc_init(struct qeth_card *card); 38 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 39 u32 *timeout); 40 41 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 42 { 43 struct qeth_card *card; 44 struct net_device *ndev; 45 __u16 temp_dev_no; 46 unsigned long flags; 47 struct ccw_dev_id read_devid; 48 49 ndev = NULL; 50 memcpy(&temp_dev_no, read_dev_no, 2); 51 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 52 list_for_each_entry(card, &qeth_core_card_list.list, list) { 53 ccw_device_get_id(CARD_RDEV(card), &read_devid); 54 if (read_devid.devno == temp_dev_no) { 55 ndev = card->dev; 56 break; 57 } 58 } 59 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 60 return ndev; 61 } 62 63 static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode) 64 { 65 int rc; 66 67 if (retcode) 68 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 69 switch (retcode) { 70 case IPA_RC_SUCCESS: 71 rc = 0; 72 break; 73 case IPA_RC_L2_UNSUPPORTED_CMD: 74 rc = -EOPNOTSUPP; 75 break; 76 case IPA_RC_L2_ADDR_TABLE_FULL: 77 rc = -ENOSPC; 78 break; 79 case IPA_RC_L2_DUP_MAC: 80 case IPA_RC_L2_DUP_LAYER3_MAC: 81 rc = -EEXIST; 82 break; 83 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 84 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 85 rc = -EPERM; 86 break; 87 case IPA_RC_L2_MAC_NOT_FOUND: 88 rc = -ENOENT; 89 break; 90 case -ENOMEM: 91 rc = -ENOMEM; 92 break; 93 default: 94 rc = -EIO; 95 break; 96 } 97 return rc; 98 } 99 100 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 101 enum qeth_ipa_cmds ipacmd) 102 { 103 struct qeth_ipa_cmd *cmd; 104 struct qeth_cmd_buffer *iob; 105 106 QETH_CARD_TEXT(card, 2, "L2sdmac"); 107 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 108 if (!iob) 109 return -ENOMEM; 110 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 111 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 112 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 113 return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob, 114 NULL, NULL)); 115 } 116 117 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 118 { 119 int rc; 120 121 QETH_CARD_TEXT(card, 2, "L2Setmac"); 122 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 123 if (rc == 0) { 124 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 125 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN); 126 dev_info(&card->gdev->dev, 127 "MAC address %pM successfully registered on device %s\n", 128 card->dev->dev_addr, card->dev->name); 129 } else { 130 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 131 switch (rc) { 132 case -EEXIST: 133 dev_warn(&card->gdev->dev, 134 "MAC address %pM already exists\n", mac); 135 break; 136 case -EPERM: 137 dev_warn(&card->gdev->dev, 138 "MAC address %pM is not authorized\n", mac); 139 break; 140 } 141 } 142 return rc; 143 } 144 145 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 146 { 147 int rc; 148 149 QETH_CARD_TEXT(card, 2, "L2Delmac"); 150 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 151 return 0; 152 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC); 153 if (rc == 0) 154 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 155 return rc; 156 } 157 158 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) 159 { 160 int rc; 161 162 QETH_CARD_TEXT(card, 2, "L2Sgmac"); 163 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC); 164 if (rc == -EEXIST) 165 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n", 166 mac, QETH_CARD_IFNAME(card)); 167 else if (rc) 168 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n", 169 mac, QETH_CARD_IFNAME(card), rc); 170 return rc; 171 } 172 173 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) 174 { 175 int rc; 176 177 QETH_CARD_TEXT(card, 2, "L2Dgmac"); 178 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC); 179 if (rc) 180 QETH_DBF_MESSAGE(2, 181 "Could not delete group MAC %pM on %s: %d\n", 182 mac, QETH_CARD_IFNAME(card), rc); 183 return rc; 184 } 185 186 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac) 187 { 188 if (mac->is_uc) { 189 return qeth_l2_send_setdelmac(card, mac->mac_addr, 190 IPA_CMD_SETVMAC); 191 } else { 192 return qeth_l2_send_setgroupmac(card, mac->mac_addr); 193 } 194 } 195 196 static int qeth_l2_remove_mac(struct qeth_card *card, struct qeth_mac *mac) 197 { 198 if (mac->is_uc) { 199 return qeth_l2_send_setdelmac(card, mac->mac_addr, 200 IPA_CMD_DELVMAC); 201 } else { 202 return qeth_l2_send_delgroupmac(card, mac->mac_addr); 203 } 204 } 205 206 static void qeth_l2_del_all_macs(struct qeth_card *card) 207 { 208 struct qeth_mac *mac; 209 struct hlist_node *tmp; 210 int i; 211 212 spin_lock_bh(&card->mclock); 213 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 214 hash_del(&mac->hnode); 215 kfree(mac); 216 } 217 spin_unlock_bh(&card->mclock); 218 } 219 220 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 221 { 222 if (card->info.type == QETH_CARD_TYPE_OSN) 223 return RTN_UNSPEC; 224 if (is_broadcast_ether_addr(skb->data)) 225 return RTN_BROADCAST; 226 if (is_multicast_ether_addr(skb->data)) 227 return RTN_MULTICAST; 228 return RTN_UNSPEC; 229 } 230 231 static void qeth_l2_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr, 232 struct sk_buff *skb) 233 { 234 struct iphdr *iph = ip_hdr(skb); 235 236 /* tcph->check contains already the pseudo hdr checksum 237 * so just set the header flags 238 */ 239 if (iph->protocol == IPPROTO_UDP) 240 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; 241 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 242 QETH_HDR_EXT_CSUM_HDR_REQ; 243 iph->check = 0; 244 if (card->options.performance_stats) 245 card->perf_stats.tx_csum++; 246 } 247 248 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb, 249 int cast_type, unsigned int data_len) 250 { 251 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 252 253 memset(hdr, 0, sizeof(struct qeth_hdr)); 254 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 255 hdr->hdr.l2.pkt_length = data_len; 256 257 /* set byte byte 3 to casting flags */ 258 if (cast_type == RTN_MULTICAST) 259 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 260 else if (cast_type == RTN_BROADCAST) 261 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 262 else 263 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 264 265 /* VSWITCH relies on the VLAN 266 * information to be present in 267 * the QDIO header */ 268 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 269 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 270 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 271 } 272 } 273 274 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode) 275 { 276 if (retcode) 277 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 278 279 switch (retcode) { 280 case IPA_RC_SUCCESS: 281 return 0; 282 case IPA_RC_L2_INVALID_VLAN_ID: 283 return -EINVAL; 284 case IPA_RC_L2_DUP_VLAN_ID: 285 return -EEXIST; 286 case IPA_RC_L2_VLAN_ID_NOT_FOUND: 287 return -ENOENT; 288 case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: 289 return -EPERM; 290 case -ENOMEM: 291 return -ENOMEM; 292 default: 293 return -EIO; 294 } 295 } 296 297 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 298 struct qeth_reply *reply, 299 unsigned long data) 300 { 301 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 302 303 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 304 if (cmd->hdr.return_code) { 305 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n", 306 cmd->data.setdelvlan.vlan_id, 307 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 308 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 309 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 310 } 311 return 0; 312 } 313 314 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 315 enum qeth_ipa_cmds ipacmd) 316 { 317 struct qeth_ipa_cmd *cmd; 318 struct qeth_cmd_buffer *iob; 319 320 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 321 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 322 if (!iob) 323 return -ENOMEM; 324 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 325 cmd->data.setdelvlan.vlan_id = i; 326 return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob, 327 qeth_l2_send_setdelvlan_cb, NULL)); 328 } 329 330 static void qeth_l2_process_vlans(struct qeth_card *card) 331 { 332 struct qeth_vlan_vid *id; 333 QETH_CARD_TEXT(card, 3, "L2prcvln"); 334 spin_lock_bh(&card->vlanlock); 335 list_for_each_entry(id, &card->vid_list, list) { 336 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 337 } 338 spin_unlock_bh(&card->vlanlock); 339 } 340 341 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 342 __be16 proto, u16 vid) 343 { 344 struct qeth_card *card = dev->ml_priv; 345 struct qeth_vlan_vid *id; 346 int rc; 347 348 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 349 if (!vid) 350 return 0; 351 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 352 QETH_CARD_TEXT(card, 3, "aidREC"); 353 return 0; 354 } 355 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 356 if (id) { 357 id->vid = vid; 358 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 359 if (rc) { 360 kfree(id); 361 return rc; 362 } 363 spin_lock_bh(&card->vlanlock); 364 list_add_tail(&id->list, &card->vid_list); 365 spin_unlock_bh(&card->vlanlock); 366 } else { 367 return -ENOMEM; 368 } 369 return 0; 370 } 371 372 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 373 __be16 proto, u16 vid) 374 { 375 struct qeth_vlan_vid *id, *tmpid = NULL; 376 struct qeth_card *card = dev->ml_priv; 377 int rc = 0; 378 379 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 380 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 381 QETH_CARD_TEXT(card, 3, "kidREC"); 382 return 0; 383 } 384 spin_lock_bh(&card->vlanlock); 385 list_for_each_entry(id, &card->vid_list, list) { 386 if (id->vid == vid) { 387 list_del(&id->list); 388 tmpid = id; 389 break; 390 } 391 } 392 spin_unlock_bh(&card->vlanlock); 393 if (tmpid) { 394 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 395 kfree(tmpid); 396 } 397 qeth_l2_set_rx_mode(card->dev); 398 return rc; 399 } 400 401 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 402 { 403 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 404 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 405 406 qeth_set_allowed_threads(card, 0, 1); 407 if (card->read.state == CH_STATE_UP && 408 card->write.state == CH_STATE_UP && 409 (card->state == CARD_STATE_UP)) { 410 if (recovery_mode && 411 card->info.type != QETH_CARD_TYPE_OSN) { 412 qeth_l2_stop(card->dev); 413 } else { 414 rtnl_lock(); 415 dev_close(card->dev); 416 rtnl_unlock(); 417 } 418 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 419 card->state = CARD_STATE_SOFTSETUP; 420 } 421 if (card->state == CARD_STATE_SOFTSETUP) { 422 qeth_l2_del_all_macs(card); 423 qeth_clear_ipacmd_list(card); 424 card->state = CARD_STATE_HARDSETUP; 425 } 426 if (card->state == CARD_STATE_HARDSETUP) { 427 qeth_qdio_clear_card(card, 0); 428 qeth_clear_qdio_buffers(card); 429 qeth_clear_working_pool_list(card); 430 card->state = CARD_STATE_DOWN; 431 } 432 if (card->state == CARD_STATE_DOWN) { 433 qeth_clear_cmd_buffers(&card->read); 434 qeth_clear_cmd_buffers(&card->write); 435 } 436 } 437 438 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 439 int budget, int *done) 440 { 441 int work_done = 0; 442 struct sk_buff *skb; 443 struct qeth_hdr *hdr; 444 unsigned int len; 445 446 *done = 0; 447 WARN_ON_ONCE(!budget); 448 while (budget) { 449 skb = qeth_core_get_next_skb(card, 450 &card->qdio.in_q->bufs[card->rx.b_index], 451 &card->rx.b_element, &card->rx.e_offset, &hdr); 452 if (!skb) { 453 *done = 1; 454 break; 455 } 456 skb->dev = card->dev; 457 switch (hdr->hdr.l2.id) { 458 case QETH_HEADER_TYPE_LAYER2: 459 skb->pkt_type = PACKET_HOST; 460 skb->protocol = eth_type_trans(skb, skb->dev); 461 if ((card->dev->features & NETIF_F_RXCSUM) 462 && ((hdr->hdr.l2.flags[1] & 463 (QETH_HDR_EXT_CSUM_HDR_REQ | 464 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 465 (QETH_HDR_EXT_CSUM_HDR_REQ | 466 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 467 skb->ip_summed = CHECKSUM_UNNECESSARY; 468 else 469 skb->ip_summed = CHECKSUM_NONE; 470 if (skb->protocol == htons(ETH_P_802_2)) 471 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 472 len = skb->len; 473 napi_gro_receive(&card->napi, skb); 474 break; 475 case QETH_HEADER_TYPE_OSN: 476 if (card->info.type == QETH_CARD_TYPE_OSN) { 477 skb_push(skb, sizeof(struct qeth_hdr)); 478 skb_copy_to_linear_data(skb, hdr, 479 sizeof(struct qeth_hdr)); 480 len = skb->len; 481 card->osn_info.data_cb(skb); 482 break; 483 } 484 /* else unknown */ 485 default: 486 dev_kfree_skb_any(skb); 487 QETH_CARD_TEXT(card, 3, "inbunkno"); 488 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 489 continue; 490 } 491 work_done++; 492 budget--; 493 card->stats.rx_packets++; 494 card->stats.rx_bytes += len; 495 } 496 return work_done; 497 } 498 499 static int qeth_l2_request_initial_mac(struct qeth_card *card) 500 { 501 int rc = 0; 502 char vendor_pre[] = {0x02, 0x00, 0x00}; 503 504 QETH_DBF_TEXT(SETUP, 2, "l2reqmac"); 505 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 506 507 if (MACHINE_IS_VM) { 508 rc = qeth_vm_request_mac(card); 509 if (!rc) 510 goto out; 511 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n", 512 CARD_BUS_ID(card), rc); 513 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc); 514 /* fall back to alternative mechanism: */ 515 } 516 517 if (card->info.type == QETH_CARD_TYPE_IQD || 518 card->info.type == QETH_CARD_TYPE_OSM || 519 card->info.type == QETH_CARD_TYPE_OSX || 520 card->info.guestlan) { 521 rc = qeth_setadpparms_change_macaddr(card); 522 if (rc) { 523 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 524 "device %s: x%x\n", CARD_BUS_ID(card), rc); 525 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 526 return rc; 527 } 528 } else { 529 eth_random_addr(card->dev->dev_addr); 530 memcpy(card->dev->dev_addr, vendor_pre, 3); 531 } 532 out: 533 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len); 534 return 0; 535 } 536 537 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 538 { 539 struct sockaddr *addr = p; 540 struct qeth_card *card = dev->ml_priv; 541 int rc = 0; 542 543 QETH_CARD_TEXT(card, 3, "setmac"); 544 545 if (card->info.type == QETH_CARD_TYPE_OSN || 546 card->info.type == QETH_CARD_TYPE_OSM || 547 card->info.type == QETH_CARD_TYPE_OSX) { 548 QETH_CARD_TEXT(card, 3, "setmcTYP"); 549 return -EOPNOTSUPP; 550 } 551 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN); 552 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 553 QETH_CARD_TEXT(card, 3, "setmcREC"); 554 return -ERESTARTSYS; 555 } 556 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 557 if (!rc || (rc == -ENOENT)) 558 rc = qeth_l2_send_setmac(card, addr->sa_data); 559 return rc ? -EINVAL : 0; 560 } 561 562 static void qeth_promisc_to_bridge(struct qeth_card *card) 563 { 564 struct net_device *dev = card->dev; 565 enum qeth_ipa_promisc_modes promisc_mode; 566 int role; 567 int rc; 568 569 QETH_CARD_TEXT(card, 3, "pmisc2br"); 570 571 if (!card->options.sbp.reflect_promisc) 572 return; 573 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 574 : SET_PROMISC_MODE_OFF; 575 if (promisc_mode == card->info.promisc_mode) 576 return; 577 578 if (promisc_mode == SET_PROMISC_MODE_ON) { 579 if (card->options.sbp.reflect_promisc_primary) 580 role = QETH_SBP_ROLE_PRIMARY; 581 else 582 role = QETH_SBP_ROLE_SECONDARY; 583 } else 584 role = QETH_SBP_ROLE_NONE; 585 586 rc = qeth_bridgeport_setrole(card, role); 587 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 588 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 589 if (!rc) { 590 card->options.sbp.role = role; 591 card->info.promisc_mode = promisc_mode; 592 } 593 594 } 595 /* New MAC address is added to the hash table and marked to be written on card 596 * only if there is not in the hash table storage already 597 * 598 */ 599 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, 600 u8 is_uc) 601 { 602 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 603 struct qeth_mac *mac; 604 605 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 606 if (is_uc == mac->is_uc && 607 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) { 608 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 609 return; 610 } 611 } 612 613 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 614 615 if (!mac) 616 return; 617 618 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN); 619 mac->is_uc = is_uc; 620 mac->disp_flag = QETH_DISP_ADDR_ADD; 621 622 hash_add(card->mac_htable, &mac->hnode, mac_hash); 623 } 624 625 static void qeth_l2_set_rx_mode(struct net_device *dev) 626 { 627 struct qeth_card *card = dev->ml_priv; 628 struct netdev_hw_addr *ha; 629 struct qeth_mac *mac; 630 struct hlist_node *tmp; 631 int i; 632 int rc; 633 634 if (card->info.type == QETH_CARD_TYPE_OSN) 635 return; 636 637 QETH_CARD_TEXT(card, 3, "setmulti"); 638 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 639 (card->state != CARD_STATE_UP)) 640 return; 641 642 spin_lock_bh(&card->mclock); 643 644 netdev_for_each_mc_addr(ha, dev) 645 qeth_l2_add_mac(card, ha, 0); 646 647 netdev_for_each_uc_addr(ha, dev) 648 qeth_l2_add_mac(card, ha, 1); 649 650 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 651 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) { 652 qeth_l2_remove_mac(card, mac); 653 hash_del(&mac->hnode); 654 kfree(mac); 655 656 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) { 657 rc = qeth_l2_write_mac(card, mac); 658 if (rc) { 659 hash_del(&mac->hnode); 660 kfree(mac); 661 } else 662 mac->disp_flag = QETH_DISP_ADDR_DELETE; 663 } else 664 mac->disp_flag = QETH_DISP_ADDR_DELETE; 665 } 666 667 spin_unlock_bh(&card->mclock); 668 669 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 670 qeth_setadp_promisc_mode(card); 671 else 672 qeth_promisc_to_bridge(card); 673 } 674 675 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb, 676 struct qeth_qdio_out_q *queue, int cast_type) 677 { 678 unsigned int data_offset = ETH_HLEN; 679 struct qeth_hdr *hdr; 680 int rc; 681 682 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 683 if (!hdr) 684 return -ENOMEM; 685 qeth_l2_fill_header(hdr, skb, cast_type, skb->len); 686 skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr), 687 data_offset); 688 689 if (!qeth_get_elements_no(card, skb, 1, data_offset)) { 690 rc = -E2BIG; 691 goto out; 692 } 693 rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset, 694 sizeof(*hdr) + data_offset); 695 out: 696 if (rc) 697 kmem_cache_free(qeth_core_header_cache, hdr); 698 return rc; 699 } 700 701 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb, 702 struct qeth_qdio_out_q *queue, int cast_type) 703 { 704 int push_len = sizeof(struct qeth_hdr); 705 unsigned int elements, nr_frags; 706 unsigned int hdr_elements = 0; 707 struct qeth_hdr *hdr = NULL; 708 unsigned int hd_len = 0; 709 int rc; 710 711 /* fix hardware limitation: as long as we do not have sbal 712 * chaining we can not send long frag lists 713 */ 714 if (!qeth_get_elements_no(card, skb, 0, 0)) { 715 rc = skb_linearize(skb); 716 717 if (card->options.performance_stats) { 718 if (rc) 719 card->perf_stats.tx_linfail++; 720 else 721 card->perf_stats.tx_lin++; 722 } 723 if (rc) 724 return rc; 725 } 726 nr_frags = skb_shinfo(skb)->nr_frags; 727 728 rc = skb_cow_head(skb, push_len); 729 if (rc) 730 return rc; 731 push_len = qeth_push_hdr(skb, &hdr, push_len); 732 if (push_len < 0) 733 return push_len; 734 if (!push_len) { 735 /* hdr was allocated from cache */ 736 hd_len = sizeof(*hdr); 737 hdr_elements = 1; 738 } 739 qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len); 740 if (skb->ip_summed == CHECKSUM_PARTIAL) 741 qeth_l2_hdr_csum(card, hdr, skb); 742 743 elements = qeth_get_elements_no(card, skb, hdr_elements, 0); 744 if (!elements) { 745 rc = -E2BIG; 746 goto out; 747 } 748 elements += hdr_elements; 749 750 /* TODO: remove the skb_orphan() once TX completion is fast enough */ 751 skb_orphan(skb); 752 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements); 753 out: 754 if (!rc) { 755 if (card->options.performance_stats && nr_frags) { 756 card->perf_stats.sg_skbs_sent++; 757 /* nr_frags + skb->data */ 758 card->perf_stats.sg_frags_sent += nr_frags + 1; 759 } 760 } else { 761 if (hd_len) 762 kmem_cache_free(qeth_core_header_cache, hdr); 763 if (rc == -EBUSY) 764 /* roll back to ETH header */ 765 skb_pull(skb, push_len); 766 } 767 return rc; 768 } 769 770 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 771 struct qeth_qdio_out_q *queue) 772 { 773 unsigned int elements; 774 struct qeth_hdr *hdr; 775 776 if (skb->protocol == htons(ETH_P_IPV6)) 777 return -EPROTONOSUPPORT; 778 779 hdr = (struct qeth_hdr *)skb->data; 780 elements = qeth_get_elements_no(card, skb, 0, 0); 781 if (!elements) 782 return -E2BIG; 783 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr))) 784 return -EINVAL; 785 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements); 786 } 787 788 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 789 struct net_device *dev) 790 { 791 struct qeth_card *card = dev->ml_priv; 792 int cast_type = qeth_l2_get_cast_type(card, skb); 793 struct qeth_qdio_out_q *queue; 794 int tx_bytes = skb->len; 795 int rc; 796 797 if (card->qdio.do_prio_queueing || (cast_type && 798 card->info.is_multicast_different)) 799 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 800 qeth_get_ip_version(skb), cast_type)]; 801 else 802 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 803 804 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 805 card->stats.tx_carrier_errors++; 806 goto tx_drop; 807 } 808 809 if (card->options.performance_stats) { 810 card->perf_stats.outbound_cnt++; 811 card->perf_stats.outbound_start_time = qeth_get_micros(); 812 } 813 netif_stop_queue(dev); 814 815 switch (card->info.type) { 816 case QETH_CARD_TYPE_OSN: 817 rc = qeth_l2_xmit_osn(card, skb, queue); 818 break; 819 case QETH_CARD_TYPE_IQD: 820 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type); 821 break; 822 default: 823 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type); 824 } 825 826 if (!rc) { 827 card->stats.tx_packets++; 828 card->stats.tx_bytes += tx_bytes; 829 if (card->options.performance_stats) 830 card->perf_stats.outbound_time += qeth_get_micros() - 831 card->perf_stats.outbound_start_time; 832 netif_wake_queue(dev); 833 return NETDEV_TX_OK; 834 } else if (rc == -EBUSY) { 835 return NETDEV_TX_BUSY; 836 } /* else fall through */ 837 838 tx_drop: 839 card->stats.tx_dropped++; 840 card->stats.tx_errors++; 841 dev_kfree_skb_any(skb); 842 netif_wake_queue(dev); 843 return NETDEV_TX_OK; 844 } 845 846 static int __qeth_l2_open(struct net_device *dev) 847 { 848 struct qeth_card *card = dev->ml_priv; 849 int rc = 0; 850 851 QETH_CARD_TEXT(card, 4, "qethopen"); 852 if (card->state == CARD_STATE_UP) 853 return rc; 854 if (card->state != CARD_STATE_SOFTSETUP) 855 return -ENODEV; 856 857 if ((card->info.type != QETH_CARD_TYPE_OSN) && 858 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 859 QETH_CARD_TEXT(card, 4, "nomacadr"); 860 return -EPERM; 861 } 862 card->data.state = CH_STATE_UP; 863 card->state = CARD_STATE_UP; 864 netif_start_queue(dev); 865 866 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 867 napi_enable(&card->napi); 868 napi_schedule(&card->napi); 869 } else 870 rc = -EIO; 871 return rc; 872 } 873 874 static int qeth_l2_open(struct net_device *dev) 875 { 876 struct qeth_card *card = dev->ml_priv; 877 878 QETH_CARD_TEXT(card, 5, "qethope_"); 879 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 880 QETH_CARD_TEXT(card, 3, "openREC"); 881 return -ERESTARTSYS; 882 } 883 return __qeth_l2_open(dev); 884 } 885 886 static int qeth_l2_stop(struct net_device *dev) 887 { 888 struct qeth_card *card = dev->ml_priv; 889 890 QETH_CARD_TEXT(card, 4, "qethstop"); 891 netif_tx_disable(dev); 892 if (card->state == CARD_STATE_UP) { 893 card->state = CARD_STATE_SOFTSETUP; 894 napi_disable(&card->napi); 895 } 896 return 0; 897 } 898 899 static const struct device_type qeth_l2_devtype = { 900 .name = "qeth_layer2", 901 .groups = qeth_l2_attr_groups, 902 }; 903 904 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 905 { 906 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 907 int rc; 908 909 if (gdev->dev.type == &qeth_generic_devtype) { 910 rc = qeth_l2_create_device_attributes(&gdev->dev); 911 if (rc) 912 return rc; 913 } 914 INIT_LIST_HEAD(&card->vid_list); 915 hash_init(card->mac_htable); 916 card->options.layer2 = 1; 917 card->info.hwtrap = 0; 918 qeth_l2_vnicc_set_defaults(card); 919 return 0; 920 } 921 922 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 923 { 924 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 925 926 if (cgdev->dev.type == &qeth_generic_devtype) 927 qeth_l2_remove_device_attributes(&cgdev->dev); 928 qeth_set_allowed_threads(card, 0, 1); 929 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 930 931 if (cgdev->state == CCWGROUP_ONLINE) 932 qeth_l2_set_offline(cgdev); 933 934 if (card->dev) { 935 netif_napi_del(&card->napi); 936 unregister_netdev(card->dev); 937 card->dev = NULL; 938 } 939 return; 940 } 941 942 static const struct ethtool_ops qeth_l2_ethtool_ops = { 943 .get_link = ethtool_op_get_link, 944 .get_strings = qeth_core_get_strings, 945 .get_ethtool_stats = qeth_core_get_ethtool_stats, 946 .get_sset_count = qeth_core_get_sset_count, 947 .get_drvinfo = qeth_core_get_drvinfo, 948 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 949 }; 950 951 static const struct ethtool_ops qeth_l2_osn_ops = { 952 .get_strings = qeth_core_get_strings, 953 .get_ethtool_stats = qeth_core_get_ethtool_stats, 954 .get_sset_count = qeth_core_get_sset_count, 955 .get_drvinfo = qeth_core_get_drvinfo, 956 }; 957 958 static const struct net_device_ops qeth_l2_netdev_ops = { 959 .ndo_open = qeth_l2_open, 960 .ndo_stop = qeth_l2_stop, 961 .ndo_get_stats = qeth_get_stats, 962 .ndo_start_xmit = qeth_l2_hard_start_xmit, 963 .ndo_validate_addr = eth_validate_addr, 964 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 965 .ndo_do_ioctl = qeth_do_ioctl, 966 .ndo_set_mac_address = qeth_l2_set_mac_address, 967 .ndo_change_mtu = qeth_change_mtu, 968 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 969 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 970 .ndo_tx_timeout = qeth_tx_timeout, 971 .ndo_fix_features = qeth_fix_features, 972 .ndo_set_features = qeth_set_features 973 }; 974 975 static int qeth_l2_setup_netdev(struct qeth_card *card) 976 { 977 switch (card->info.type) { 978 case QETH_CARD_TYPE_IQD: 979 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 980 ether_setup); 981 break; 982 case QETH_CARD_TYPE_OSN: 983 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 984 ether_setup); 985 break; 986 default: 987 card->dev = alloc_etherdev(0); 988 } 989 990 if (!card->dev) 991 return -ENODEV; 992 993 card->dev->ml_priv = card; 994 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 995 card->dev->mtu = card->info.initial_mtu; 996 card->dev->min_mtu = 64; 997 card->dev->max_mtu = ETH_MAX_MTU; 998 card->dev->netdev_ops = &qeth_l2_netdev_ops; 999 if (card->info.type == QETH_CARD_TYPE_OSN) { 1000 card->dev->ethtool_ops = &qeth_l2_osn_ops; 1001 card->dev->flags |= IFF_NOARP; 1002 } else { 1003 card->dev->ethtool_ops = &qeth_l2_ethtool_ops; 1004 } 1005 1006 if (card->info.type == QETH_CARD_TYPE_OSM) 1007 card->dev->features |= NETIF_F_VLAN_CHALLENGED; 1008 else 1009 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 1010 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 1011 card->dev->hw_features = NETIF_F_SG; 1012 card->dev->vlan_features = NETIF_F_SG; 1013 /* OSA 3S and earlier has no RX/TX support */ 1014 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 1015 card->dev->hw_features |= NETIF_F_IP_CSUM; 1016 card->dev->vlan_features |= NETIF_F_IP_CSUM; 1017 } 1018 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 1019 card->dev->hw_features |= NETIF_F_RXCSUM; 1020 card->dev->vlan_features |= NETIF_F_RXCSUM; 1021 } 1022 } 1023 if (card->info.type != QETH_CARD_TYPE_OSN && 1024 card->info.type != QETH_CARD_TYPE_IQD) { 1025 card->dev->priv_flags &= ~IFF_TX_SKB_SHARING; 1026 card->dev->needed_headroom = sizeof(struct qeth_hdr); 1027 } 1028 1029 card->info.broadcast_capable = 1; 1030 qeth_l2_request_initial_mac(card); 1031 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) * 1032 PAGE_SIZE; 1033 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1034 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 1035 netif_carrier_off(card->dev); 1036 return register_netdev(card->dev); 1037 } 1038 1039 static int qeth_l2_start_ipassists(struct qeth_card *card) 1040 { 1041 /* configure isolation level */ 1042 if (qeth_set_access_ctrl_online(card, 0)) 1043 return -ENODEV; 1044 return 0; 1045 } 1046 1047 static void qeth_l2_trace_features(struct qeth_card *card) 1048 { 1049 /* Set BridgePort features */ 1050 QETH_CARD_TEXT(card, 2, "featuSBP"); 1051 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 1052 sizeof(card->options.sbp.supported_funcs)); 1053 /* VNIC Characteristics features */ 1054 QETH_CARD_TEXT(card, 2, "feaVNICC"); 1055 QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, 1056 sizeof(card->options.vnicc.sup_chars)); 1057 } 1058 1059 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1060 { 1061 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1062 int rc = 0; 1063 enum qeth_card_states recover_flag; 1064 1065 mutex_lock(&card->discipline_mutex); 1066 mutex_lock(&card->conf_mutex); 1067 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1068 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1069 1070 recover_flag = card->state; 1071 rc = qeth_core_hardsetup_card(card); 1072 if (rc) { 1073 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1074 rc = -ENODEV; 1075 goto out_remove; 1076 } 1077 qeth_bridgeport_query_support(card); 1078 if (card->options.sbp.supported_funcs) 1079 dev_info(&card->gdev->dev, 1080 "The device represents a Bridge Capable Port\n"); 1081 1082 if (!card->dev && qeth_l2_setup_netdev(card)) { 1083 rc = -ENODEV; 1084 goto out_remove; 1085 } 1086 1087 if (card->info.type != QETH_CARD_TYPE_OSN) 1088 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1089 1090 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1091 if (card->info.hwtrap && 1092 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1093 card->info.hwtrap = 0; 1094 } else 1095 card->info.hwtrap = 0; 1096 1097 /* for the rx_bcast characteristic, init VNICC after setmac */ 1098 qeth_l2_vnicc_init(card); 1099 1100 qeth_trace_features(card); 1101 qeth_l2_trace_features(card); 1102 1103 qeth_l2_setup_bridgeport_attrs(card); 1104 1105 card->state = CARD_STATE_HARDSETUP; 1106 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1107 qeth_print_status_message(card); 1108 1109 /* softsetup */ 1110 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1111 1112 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1113 (card->info.type == QETH_CARD_TYPE_OSX)) { 1114 rc = qeth_l2_start_ipassists(card); 1115 if (rc) 1116 goto out_remove; 1117 } 1118 1119 if (card->info.type != QETH_CARD_TYPE_OSN) 1120 qeth_l2_process_vlans(card); 1121 1122 netif_tx_disable(card->dev); 1123 1124 rc = qeth_init_qdio_queues(card); 1125 if (rc) { 1126 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1127 rc = -ENODEV; 1128 goto out_remove; 1129 } 1130 card->state = CARD_STATE_SOFTSETUP; 1131 if (card->lan_online) 1132 netif_carrier_on(card->dev); 1133 else 1134 netif_carrier_off(card->dev); 1135 1136 qeth_set_allowed_threads(card, 0xffffffff, 0); 1137 if (recover_flag == CARD_STATE_RECOVER) { 1138 if (recovery_mode && 1139 card->info.type != QETH_CARD_TYPE_OSN) { 1140 __qeth_l2_open(card->dev); 1141 } else { 1142 rtnl_lock(); 1143 dev_open(card->dev); 1144 rtnl_unlock(); 1145 } 1146 /* this also sets saved unicast addresses */ 1147 qeth_l2_set_rx_mode(card->dev); 1148 rtnl_lock(); 1149 qeth_recover_features(card->dev); 1150 rtnl_unlock(); 1151 } 1152 /* let user_space know that device is online */ 1153 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1154 mutex_unlock(&card->conf_mutex); 1155 mutex_unlock(&card->discipline_mutex); 1156 return 0; 1157 1158 out_remove: 1159 qeth_l2_stop_card(card, 0); 1160 ccw_device_set_offline(CARD_DDEV(card)); 1161 ccw_device_set_offline(CARD_WDEV(card)); 1162 ccw_device_set_offline(CARD_RDEV(card)); 1163 qdio_free(CARD_DDEV(card)); 1164 if (recover_flag == CARD_STATE_RECOVER) 1165 card->state = CARD_STATE_RECOVER; 1166 else 1167 card->state = CARD_STATE_DOWN; 1168 mutex_unlock(&card->conf_mutex); 1169 mutex_unlock(&card->discipline_mutex); 1170 return rc; 1171 } 1172 1173 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1174 { 1175 return __qeth_l2_set_online(gdev, 0); 1176 } 1177 1178 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1179 int recovery_mode) 1180 { 1181 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1182 int rc = 0, rc2 = 0, rc3 = 0; 1183 enum qeth_card_states recover_flag; 1184 1185 mutex_lock(&card->discipline_mutex); 1186 mutex_lock(&card->conf_mutex); 1187 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1188 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1189 1190 if (card->dev && netif_carrier_ok(card->dev)) 1191 netif_carrier_off(card->dev); 1192 recover_flag = card->state; 1193 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1194 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1195 card->info.hwtrap = 1; 1196 } 1197 qeth_l2_stop_card(card, recovery_mode); 1198 rc = ccw_device_set_offline(CARD_DDEV(card)); 1199 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1200 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1201 if (!rc) 1202 rc = (rc2) ? rc2 : rc3; 1203 if (rc) 1204 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1205 qdio_free(CARD_DDEV(card)); 1206 if (recover_flag == CARD_STATE_UP) 1207 card->state = CARD_STATE_RECOVER; 1208 /* let user_space know that device is offline */ 1209 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1210 mutex_unlock(&card->conf_mutex); 1211 mutex_unlock(&card->discipline_mutex); 1212 return 0; 1213 } 1214 1215 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1216 { 1217 return __qeth_l2_set_offline(cgdev, 0); 1218 } 1219 1220 static int qeth_l2_recover(void *ptr) 1221 { 1222 struct qeth_card *card; 1223 int rc = 0; 1224 1225 card = (struct qeth_card *) ptr; 1226 QETH_CARD_TEXT(card, 2, "recover1"); 1227 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1228 return 0; 1229 QETH_CARD_TEXT(card, 2, "recover2"); 1230 dev_warn(&card->gdev->dev, 1231 "A recovery process has been started for the device\n"); 1232 qeth_set_recovery_task(card); 1233 __qeth_l2_set_offline(card->gdev, 1); 1234 rc = __qeth_l2_set_online(card->gdev, 1); 1235 if (!rc) 1236 dev_info(&card->gdev->dev, 1237 "Device successfully recovered!\n"); 1238 else { 1239 qeth_close_dev(card); 1240 dev_warn(&card->gdev->dev, "The qeth device driver " 1241 "failed to recover an error on the device\n"); 1242 } 1243 qeth_clear_recovery_task(card); 1244 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1245 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1246 return 0; 1247 } 1248 1249 static int __init qeth_l2_init(void) 1250 { 1251 pr_info("register layer 2 discipline\n"); 1252 return 0; 1253 } 1254 1255 static void __exit qeth_l2_exit(void) 1256 { 1257 pr_info("unregister layer 2 discipline\n"); 1258 } 1259 1260 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1261 { 1262 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1263 1264 if (card->dev) 1265 netif_device_detach(card->dev); 1266 qeth_set_allowed_threads(card, 0, 1); 1267 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1268 if (gdev->state == CCWGROUP_OFFLINE) 1269 return 0; 1270 if (card->state == CARD_STATE_UP) { 1271 if (card->info.hwtrap) 1272 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1273 __qeth_l2_set_offline(card->gdev, 1); 1274 } else 1275 __qeth_l2_set_offline(card->gdev, 0); 1276 return 0; 1277 } 1278 1279 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1280 { 1281 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1282 int rc = 0; 1283 1284 if (gdev->state == CCWGROUP_OFFLINE) 1285 goto out; 1286 1287 if (card->state == CARD_STATE_RECOVER) { 1288 rc = __qeth_l2_set_online(card->gdev, 1); 1289 if (rc) { 1290 rtnl_lock(); 1291 dev_close(card->dev); 1292 rtnl_unlock(); 1293 } 1294 } else 1295 rc = __qeth_l2_set_online(card->gdev, 0); 1296 out: 1297 qeth_set_allowed_threads(card, 0xffffffff, 0); 1298 if (card->dev) 1299 netif_device_attach(card->dev); 1300 if (rc) 1301 dev_warn(&card->gdev->dev, "The qeth device driver " 1302 "failed to recover an error on the device\n"); 1303 return rc; 1304 } 1305 1306 /* Returns zero if the command is successfully "consumed" */ 1307 static int qeth_l2_control_event(struct qeth_card *card, 1308 struct qeth_ipa_cmd *cmd) 1309 { 1310 switch (cmd->hdr.command) { 1311 case IPA_CMD_SETBRIDGEPORT_OSA: 1312 case IPA_CMD_SETBRIDGEPORT_IQD: 1313 if (cmd->data.sbp.hdr.command_code == 1314 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1315 qeth_bridge_state_change(card, cmd); 1316 return 0; 1317 } else 1318 return 1; 1319 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1320 qeth_bridge_host_event(card, cmd); 1321 return 0; 1322 default: 1323 return 1; 1324 } 1325 } 1326 1327 struct qeth_discipline qeth_l2_discipline = { 1328 .devtype = &qeth_l2_devtype, 1329 .start_poll = qeth_qdio_start_poll, 1330 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1331 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1332 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1333 .recover = qeth_l2_recover, 1334 .setup = qeth_l2_probe_device, 1335 .remove = qeth_l2_remove_device, 1336 .set_online = qeth_l2_set_online, 1337 .set_offline = qeth_l2_set_offline, 1338 .freeze = qeth_l2_pm_suspend, 1339 .thaw = qeth_l2_pm_resume, 1340 .restore = qeth_l2_pm_resume, 1341 .do_ioctl = NULL, 1342 .control_event_handler = qeth_l2_control_event, 1343 }; 1344 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1345 1346 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1347 struct qeth_cmd_buffer *iob) 1348 { 1349 unsigned long flags; 1350 int rc = 0; 1351 1352 QETH_CARD_TEXT(card, 5, "osndctrd"); 1353 1354 wait_event(card->wait_q, 1355 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1356 qeth_prepare_control_data(card, len, iob); 1357 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1358 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1359 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1360 (addr_t) iob, 0, 0); 1361 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1362 if (rc) { 1363 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1364 "ccw_device_start rc = %i\n", rc); 1365 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1366 qeth_release_buffer(iob->channel, iob); 1367 atomic_set(&card->write.irq_pending, 0); 1368 wake_up(&card->wait_q); 1369 } 1370 return rc; 1371 } 1372 1373 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1374 struct qeth_cmd_buffer *iob, int data_len) 1375 { 1376 u16 s1, s2; 1377 1378 QETH_CARD_TEXT(card, 4, "osndipa"); 1379 1380 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1381 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1382 s2 = (u16)data_len; 1383 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1384 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1385 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1386 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1387 return qeth_osn_send_control_data(card, s1, iob); 1388 } 1389 1390 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1391 { 1392 struct qeth_cmd_buffer *iob; 1393 struct qeth_card *card; 1394 int rc; 1395 1396 if (!dev) 1397 return -ENODEV; 1398 card = dev->ml_priv; 1399 if (!card) 1400 return -ENODEV; 1401 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1402 if (!qeth_card_hw_is_reachable(card)) 1403 return -ENODEV; 1404 iob = qeth_wait_for_buffer(&card->write); 1405 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1406 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1407 return rc; 1408 } 1409 EXPORT_SYMBOL(qeth_osn_assist); 1410 1411 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1412 int (*assist_cb)(struct net_device *, void *), 1413 int (*data_cb)(struct sk_buff *)) 1414 { 1415 struct qeth_card *card; 1416 1417 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1418 if (*dev == NULL) 1419 return -ENODEV; 1420 card = (*dev)->ml_priv; 1421 if (!card) 1422 return -ENODEV; 1423 QETH_CARD_TEXT(card, 2, "osnreg"); 1424 if ((assist_cb == NULL) || (data_cb == NULL)) 1425 return -EINVAL; 1426 card->osn_info.assist_cb = assist_cb; 1427 card->osn_info.data_cb = data_cb; 1428 return 0; 1429 } 1430 EXPORT_SYMBOL(qeth_osn_register); 1431 1432 void qeth_osn_deregister(struct net_device *dev) 1433 { 1434 struct qeth_card *card; 1435 1436 if (!dev) 1437 return; 1438 card = dev->ml_priv; 1439 if (!card) 1440 return; 1441 QETH_CARD_TEXT(card, 2, "osndereg"); 1442 card->osn_info.assist_cb = NULL; 1443 card->osn_info.data_cb = NULL; 1444 return; 1445 } 1446 EXPORT_SYMBOL(qeth_osn_deregister); 1447 1448 /* SETBRIDGEPORT support, async notifications */ 1449 1450 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1451 1452 /** 1453 * qeth_bridge_emit_host_event() - bridgeport address change notification 1454 * @card: qeth_card structure pointer, for udev events. 1455 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1456 * and reset token and addr_lnid are unused and may be NULL. 1457 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1458 * object, 0 - addition of an object. 1459 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1460 * @token: "network token" structure identifying physical address of the port. 1461 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1462 * 1463 * This function is called when registrations and deregistrations are 1464 * reported by the hardware, and also when notifications are enabled - 1465 * for all currently registered addresses. 1466 */ 1467 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1468 enum qeth_an_event_type evtype, 1469 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1470 { 1471 char str[7][32]; 1472 char *env[8]; 1473 int i = 0; 1474 1475 switch (evtype) { 1476 case anev_reg_unreg: 1477 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1478 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1479 ? "deregister" : "register"); 1480 env[i] = str[i]; i++; 1481 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1482 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1483 addr_lnid->lnid); 1484 env[i] = str[i]; i++; 1485 } 1486 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1487 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1488 addr_lnid->mac); 1489 env[i] = str[i]; i++; 1490 } 1491 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1492 token->cssid, token->ssid, token->devnum); 1493 env[i] = str[i]; i++; 1494 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1495 env[i] = str[i]; i++; 1496 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1497 token->chpid); 1498 env[i] = str[i]; i++; 1499 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1500 env[i] = str[i]; i++; 1501 break; 1502 case anev_abort: 1503 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1504 env[i] = str[i]; i++; 1505 break; 1506 case anev_reset: 1507 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1508 env[i] = str[i]; i++; 1509 break; 1510 } 1511 env[i] = NULL; 1512 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1513 } 1514 1515 struct qeth_bridge_state_data { 1516 struct work_struct worker; 1517 struct qeth_card *card; 1518 struct qeth_sbp_state_change qports; 1519 }; 1520 1521 static void qeth_bridge_state_change_worker(struct work_struct *work) 1522 { 1523 struct qeth_bridge_state_data *data = 1524 container_of(work, struct qeth_bridge_state_data, worker); 1525 /* We are only interested in the first entry - local port */ 1526 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1527 char env_locrem[32]; 1528 char env_role[32]; 1529 char env_state[32]; 1530 char *env[] = { 1531 env_locrem, 1532 env_role, 1533 env_state, 1534 NULL 1535 }; 1536 1537 /* Role should not change by itself, but if it did, */ 1538 /* information from the hardware is authoritative. */ 1539 mutex_lock(&data->card->conf_mutex); 1540 data->card->options.sbp.role = entry->role; 1541 mutex_unlock(&data->card->conf_mutex); 1542 1543 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1544 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1545 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1546 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1547 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1548 "<INVALID>"); 1549 snprintf(env_state, sizeof(env_state), "STATE=%s", 1550 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1551 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1552 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1553 "<INVALID>"); 1554 kobject_uevent_env(&data->card->gdev->dev.kobj, 1555 KOBJ_CHANGE, env); 1556 kfree(data); 1557 } 1558 1559 static void qeth_bridge_state_change(struct qeth_card *card, 1560 struct qeth_ipa_cmd *cmd) 1561 { 1562 struct qeth_sbp_state_change *qports = 1563 &cmd->data.sbp.data.state_change; 1564 struct qeth_bridge_state_data *data; 1565 int extrasize; 1566 1567 QETH_CARD_TEXT(card, 2, "brstchng"); 1568 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1569 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1570 return; 1571 } 1572 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1573 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1574 GFP_ATOMIC); 1575 if (!data) { 1576 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1577 return; 1578 } 1579 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1580 data->card = card; 1581 memcpy(&data->qports, qports, 1582 sizeof(struct qeth_sbp_state_change) + extrasize); 1583 queue_work(qeth_wq, &data->worker); 1584 } 1585 1586 struct qeth_bridge_host_data { 1587 struct work_struct worker; 1588 struct qeth_card *card; 1589 struct qeth_ipacmd_addr_change hostevs; 1590 }; 1591 1592 static void qeth_bridge_host_event_worker(struct work_struct *work) 1593 { 1594 struct qeth_bridge_host_data *data = 1595 container_of(work, struct qeth_bridge_host_data, worker); 1596 int i; 1597 1598 if (data->hostevs.lost_event_mask) { 1599 dev_info(&data->card->gdev->dev, 1600 "Address notification from the Bridge Port stopped %s (%s)\n", 1601 data->card->dev->name, 1602 (data->hostevs.lost_event_mask == 0x01) 1603 ? "Overflow" 1604 : (data->hostevs.lost_event_mask == 0x02) 1605 ? "Bridge port state change" 1606 : "Unknown reason"); 1607 mutex_lock(&data->card->conf_mutex); 1608 data->card->options.sbp.hostnotification = 0; 1609 mutex_unlock(&data->card->conf_mutex); 1610 qeth_bridge_emit_host_event(data->card, anev_abort, 1611 0, NULL, NULL); 1612 } else 1613 for (i = 0; i < data->hostevs.num_entries; i++) { 1614 struct qeth_ipacmd_addr_change_entry *entry = 1615 &data->hostevs.entry[i]; 1616 qeth_bridge_emit_host_event(data->card, 1617 anev_reg_unreg, 1618 entry->change_code, 1619 &entry->token, &entry->addr_lnid); 1620 } 1621 kfree(data); 1622 } 1623 1624 static void qeth_bridge_host_event(struct qeth_card *card, 1625 struct qeth_ipa_cmd *cmd) 1626 { 1627 struct qeth_ipacmd_addr_change *hostevs = 1628 &cmd->data.addrchange; 1629 struct qeth_bridge_host_data *data; 1630 int extrasize; 1631 1632 QETH_CARD_TEXT(card, 2, "brhostev"); 1633 if (cmd->hdr.return_code != 0x0000) { 1634 if (cmd->hdr.return_code == 0x0010) { 1635 if (hostevs->lost_event_mask == 0x00) 1636 hostevs->lost_event_mask = 0xff; 1637 } else { 1638 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1639 cmd->hdr.return_code); 1640 return; 1641 } 1642 } 1643 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1644 hostevs->num_entries; 1645 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1646 GFP_ATOMIC); 1647 if (!data) { 1648 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1649 return; 1650 } 1651 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1652 data->card = card; 1653 memcpy(&data->hostevs, hostevs, 1654 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1655 queue_work(qeth_wq, &data->worker); 1656 } 1657 1658 /* SETBRIDGEPORT support; sending commands */ 1659 1660 struct _qeth_sbp_cbctl { 1661 u16 ipa_rc; 1662 u16 cmd_rc; 1663 union { 1664 u32 supported; 1665 struct { 1666 enum qeth_sbp_roles *role; 1667 enum qeth_sbp_states *state; 1668 } qports; 1669 } data; 1670 }; 1671 1672 /** 1673 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1674 * @card: qeth_card structure pointer, for debug messages. 1675 * @cbctl: state structure with hardware return codes. 1676 * @setcmd: IPA command code 1677 * 1678 * Returns negative errno-compatible error indication or 0 on success. 1679 */ 1680 static int qeth_bridgeport_makerc(struct qeth_card *card, 1681 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1682 { 1683 int rc; 1684 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1685 1686 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1687 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1688 switch (cbctl->cmd_rc) { 1689 case IPA_RC_SUCCESS: 1690 rc = 0; 1691 break; 1692 case IPA_RC_L2_UNSUPPORTED_CMD: 1693 case IPA_RC_UNSUPPORTED_COMMAND: 1694 rc = -EOPNOTSUPP; 1695 break; 1696 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1697 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1698 rc = -ENODEV; /* maybe not the best code here? */ 1699 dev_err(&card->gdev->dev, 1700 "The device is not configured as a Bridge Port\n"); 1701 break; 1702 case IPA_RC_SBP_OSA_OS_MISMATCH: 1703 case IPA_RC_SBP_IQD_OS_MISMATCH: 1704 rc = -EPERM; 1705 dev_err(&card->gdev->dev, 1706 "A Bridge Port is already configured by a different operating system\n"); 1707 break; 1708 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1709 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1710 switch (setcmd) { 1711 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1712 rc = -EEXIST; 1713 dev_err(&card->gdev->dev, 1714 "The LAN already has a primary Bridge Port\n"); 1715 break; 1716 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1717 rc = -EBUSY; 1718 dev_err(&card->gdev->dev, 1719 "The device is already a primary Bridge Port\n"); 1720 break; 1721 default: 1722 rc = -EIO; 1723 } 1724 break; 1725 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1726 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1727 rc = -EBUSY; 1728 dev_err(&card->gdev->dev, 1729 "The device is already a secondary Bridge Port\n"); 1730 break; 1731 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1732 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1733 rc = -EEXIST; 1734 dev_err(&card->gdev->dev, 1735 "The LAN cannot have more secondary Bridge Ports\n"); 1736 break; 1737 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1738 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1739 rc = -EBUSY; 1740 dev_err(&card->gdev->dev, 1741 "The device is already a primary Bridge Port\n"); 1742 break; 1743 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1744 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1745 rc = -EACCES; 1746 dev_err(&card->gdev->dev, 1747 "The device is not authorized to be a Bridge Port\n"); 1748 break; 1749 default: 1750 rc = -EIO; 1751 } 1752 else 1753 switch (cbctl->ipa_rc) { 1754 case IPA_RC_NOTSUPP: 1755 rc = -EOPNOTSUPP; 1756 break; 1757 case IPA_RC_UNSUPPORTED_COMMAND: 1758 rc = -EOPNOTSUPP; 1759 break; 1760 default: 1761 rc = -EIO; 1762 } 1763 1764 if (rc) { 1765 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1766 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1767 } 1768 return rc; 1769 } 1770 1771 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1772 enum qeth_ipa_sbp_cmd sbp_cmd, 1773 unsigned int cmd_length) 1774 { 1775 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ? 1776 IPA_CMD_SETBRIDGEPORT_IQD : 1777 IPA_CMD_SETBRIDGEPORT_OSA; 1778 struct qeth_cmd_buffer *iob; 1779 struct qeth_ipa_cmd *cmd; 1780 1781 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0); 1782 if (!iob) 1783 return iob; 1784 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1785 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1786 cmd_length; 1787 cmd->data.sbp.hdr.command_code = sbp_cmd; 1788 cmd->data.sbp.hdr.used_total = 1; 1789 cmd->data.sbp.hdr.seq_no = 1; 1790 return iob; 1791 } 1792 1793 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1794 struct qeth_reply *reply, unsigned long data) 1795 { 1796 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1797 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1798 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1799 cbctl->ipa_rc = cmd->hdr.return_code; 1800 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1801 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1802 cbctl->data.supported = 1803 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1804 } else { 1805 cbctl->data.supported = 0; 1806 } 1807 return 0; 1808 } 1809 1810 /** 1811 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1812 * @card: qeth_card structure pointer. 1813 * 1814 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1815 * strucutre: card->options.sbp.supported_funcs. 1816 */ 1817 static void qeth_bridgeport_query_support(struct qeth_card *card) 1818 { 1819 struct qeth_cmd_buffer *iob; 1820 struct _qeth_sbp_cbctl cbctl; 1821 1822 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1823 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1824 sizeof(struct qeth_sbp_query_cmds_supp)); 1825 if (!iob) 1826 return; 1827 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1828 (void *)&cbctl) || 1829 qeth_bridgeport_makerc(card, &cbctl, 1830 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1831 /* non-zero makerc signifies failure, and produce messages */ 1832 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1833 return; 1834 } 1835 card->options.sbp.supported_funcs = cbctl.data.supported; 1836 } 1837 1838 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1839 struct qeth_reply *reply, unsigned long data) 1840 { 1841 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1842 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1843 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1844 1845 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1846 cbctl->ipa_rc = cmd->hdr.return_code; 1847 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1848 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1849 return 0; 1850 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1851 cbctl->cmd_rc = 0xffff; 1852 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1853 return 0; 1854 } 1855 /* first entry contains the state of the local port */ 1856 if (qports->num_entries > 0) { 1857 if (cbctl->data.qports.role) 1858 *cbctl->data.qports.role = qports->entry[0].role; 1859 if (cbctl->data.qports.state) 1860 *cbctl->data.qports.state = qports->entry[0].state; 1861 } 1862 return 0; 1863 } 1864 1865 /** 1866 * qeth_bridgeport_query_ports() - query local bridgeport status. 1867 * @card: qeth_card structure pointer. 1868 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1869 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1870 * 1871 * Returns negative errno-compatible error indication or 0 on success. 1872 * 1873 * 'role' and 'state' are not updated in case of hardware operation failure. 1874 */ 1875 int qeth_bridgeport_query_ports(struct qeth_card *card, 1876 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1877 { 1878 int rc = 0; 1879 struct qeth_cmd_buffer *iob; 1880 struct _qeth_sbp_cbctl cbctl = { 1881 .data = { 1882 .qports = { 1883 .role = role, 1884 .state = state, 1885 }, 1886 }, 1887 }; 1888 1889 QETH_CARD_TEXT(card, 2, "brqports"); 1890 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1891 return -EOPNOTSUPP; 1892 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1893 if (!iob) 1894 return -ENOMEM; 1895 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1896 (void *)&cbctl); 1897 if (rc < 0) 1898 return rc; 1899 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1900 } 1901 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1902 1903 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1904 struct qeth_reply *reply, unsigned long data) 1905 { 1906 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1907 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1908 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1909 cbctl->ipa_rc = cmd->hdr.return_code; 1910 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1911 return 0; 1912 } 1913 1914 /** 1915 * qeth_bridgeport_setrole() - Assign primary role to the port. 1916 * @card: qeth_card structure pointer. 1917 * @role: Role to assign. 1918 * 1919 * Returns negative errno-compatible error indication or 0 on success. 1920 */ 1921 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1922 { 1923 int rc = 0; 1924 int cmdlength; 1925 struct qeth_cmd_buffer *iob; 1926 struct _qeth_sbp_cbctl cbctl; 1927 enum qeth_ipa_sbp_cmd setcmd; 1928 1929 QETH_CARD_TEXT(card, 2, "brsetrol"); 1930 switch (role) { 1931 case QETH_SBP_ROLE_NONE: 1932 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1933 cmdlength = sizeof(struct qeth_sbp_reset_role); 1934 break; 1935 case QETH_SBP_ROLE_PRIMARY: 1936 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1937 cmdlength = sizeof(struct qeth_sbp_set_primary); 1938 break; 1939 case QETH_SBP_ROLE_SECONDARY: 1940 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1941 cmdlength = sizeof(struct qeth_sbp_set_secondary); 1942 break; 1943 default: 1944 return -EINVAL; 1945 } 1946 if (!(card->options.sbp.supported_funcs & setcmd)) 1947 return -EOPNOTSUPP; 1948 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1949 if (!iob) 1950 return -ENOMEM; 1951 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 1952 (void *)&cbctl); 1953 if (rc < 0) 1954 return rc; 1955 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 1956 } 1957 1958 /** 1959 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1960 * @card: qeth_card structure pointer, for debug messages. 1961 * 1962 * Returns negative errno-compatible error indication or 0 on success. 1963 */ 1964 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1965 { 1966 int rc; 1967 1968 if (pnso_rc == 0) 1969 switch (response) { 1970 case 0x0001: 1971 rc = 0; 1972 break; 1973 case 0x0004: 1974 case 0x0100: 1975 case 0x0106: 1976 rc = -EOPNOTSUPP; 1977 dev_err(&card->gdev->dev, 1978 "Setting address notification failed\n"); 1979 break; 1980 case 0x0107: 1981 rc = -EAGAIN; 1982 break; 1983 default: 1984 rc = -EIO; 1985 } 1986 else 1987 rc = -EIO; 1988 1989 if (rc) { 1990 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1991 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1992 } 1993 return rc; 1994 } 1995 1996 static void qeth_bridgeport_an_set_cb(void *priv, 1997 enum qdio_brinfo_entry_type type, void *entry) 1998 { 1999 struct qeth_card *card = (struct qeth_card *)priv; 2000 struct qdio_brinfo_entry_l2 *l2entry; 2001 u8 code; 2002 2003 if (type != l2_addr_lnid) { 2004 WARN_ON_ONCE(1); 2005 return; 2006 } 2007 2008 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 2009 code = IPA_ADDR_CHANGE_CODE_MACADDR; 2010 if (l2entry->addr_lnid.lnid) 2011 code |= IPA_ADDR_CHANGE_CODE_VLANID; 2012 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 2013 (struct net_if_token *)&l2entry->nit, 2014 (struct mac_addr_lnid *)&l2entry->addr_lnid); 2015 } 2016 2017 /** 2018 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 2019 * @card: qeth_card structure pointer. 2020 * @enable: 0 - disable, non-zero - enable notifications 2021 * 2022 * Returns negative errno-compatible error indication or 0 on success. 2023 * 2024 * On enable, emits a series of address notifications udev events for all 2025 * currently registered hosts. 2026 */ 2027 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2028 { 2029 int rc; 2030 u16 response; 2031 struct ccw_device *ddev; 2032 struct subchannel_id schid; 2033 2034 if (!card) 2035 return -EINVAL; 2036 if (!card->options.sbp.supported_funcs) 2037 return -EOPNOTSUPP; 2038 ddev = CARD_DDEV(card); 2039 ccw_device_get_schid(ddev, &schid); 2040 2041 if (enable) { 2042 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2043 rc = qdio_pnso_brinfo(schid, 1, &response, 2044 qeth_bridgeport_an_set_cb, card); 2045 } else 2046 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2047 return qeth_anset_makerc(card, rc, response); 2048 } 2049 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2050 2051 static bool qeth_bridgeport_is_in_use(struct qeth_card *card) 2052 { 2053 return (card->options.sbp.role || card->options.sbp.reflect_promisc || 2054 card->options.sbp.hostnotification); 2055 } 2056 2057 /* VNIC Characteristics support */ 2058 2059 /* handle VNICC IPA command return codes; convert to error codes */ 2060 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc) 2061 { 2062 int rc; 2063 2064 switch (ipa_rc) { 2065 case IPA_RC_SUCCESS: 2066 return ipa_rc; 2067 case IPA_RC_L2_UNSUPPORTED_CMD: 2068 case IPA_RC_NOTSUPP: 2069 rc = -EOPNOTSUPP; 2070 break; 2071 case IPA_RC_VNICC_OOSEQ: 2072 rc = -EALREADY; 2073 break; 2074 case IPA_RC_VNICC_VNICBP: 2075 rc = -EBUSY; 2076 break; 2077 case IPA_RC_L2_ADDR_TABLE_FULL: 2078 rc = -ENOSPC; 2079 break; 2080 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 2081 rc = -EACCES; 2082 break; 2083 default: 2084 rc = -EIO; 2085 } 2086 2087 QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); 2088 return rc; 2089 } 2090 2091 /* generic VNICC request call back control */ 2092 struct _qeth_l2_vnicc_request_cbctl { 2093 u32 sub_cmd; 2094 struct { 2095 u32 vnic_char; 2096 u32 timeout; 2097 } param; 2098 struct { 2099 union{ 2100 u32 *sup_cmds; 2101 u32 *timeout; 2102 }; 2103 } result; 2104 }; 2105 2106 /* generic VNICC request call back */ 2107 static int qeth_l2_vnicc_request_cb(struct qeth_card *card, 2108 struct qeth_reply *reply, 2109 unsigned long data) 2110 { 2111 struct _qeth_l2_vnicc_request_cbctl *cbctl = 2112 (struct _qeth_l2_vnicc_request_cbctl *) reply->param; 2113 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 2114 struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; 2115 2116 QETH_CARD_TEXT(card, 2, "vniccrcb"); 2117 if (cmd->hdr.return_code) 2118 return 0; 2119 /* return results to caller */ 2120 card->options.vnicc.sup_chars = rep->hdr.sup; 2121 card->options.vnicc.cur_chars = rep->hdr.cur; 2122 2123 if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS) 2124 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds; 2125 2126 if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT) 2127 *cbctl->result.timeout = rep->getset_timeout.timeout; 2128 2129 return 0; 2130 } 2131 2132 /* generic VNICC request */ 2133 static int qeth_l2_vnicc_request(struct qeth_card *card, 2134 struct _qeth_l2_vnicc_request_cbctl *cbctl) 2135 { 2136 struct qeth_ipacmd_vnicc *req; 2137 struct qeth_cmd_buffer *iob; 2138 struct qeth_ipa_cmd *cmd; 2139 int rc; 2140 2141 QETH_CARD_TEXT(card, 2, "vniccreq"); 2142 2143 /* get new buffer for request */ 2144 iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0); 2145 if (!iob) 2146 return -ENOMEM; 2147 2148 /* create header for request */ 2149 cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); 2150 req = &cmd->data.vnicc; 2151 2152 /* create sub command header for request */ 2153 req->sub_hdr.data_length = sizeof(req->sub_hdr); 2154 req->sub_hdr.sub_command = cbctl->sub_cmd; 2155 2156 /* create sub command specific request fields */ 2157 switch (cbctl->sub_cmd) { 2158 case IPA_VNICC_QUERY_CHARS: 2159 break; 2160 case IPA_VNICC_QUERY_CMDS: 2161 req->sub_hdr.data_length += sizeof(req->query_cmds); 2162 req->query_cmds.vnic_char = cbctl->param.vnic_char; 2163 break; 2164 case IPA_VNICC_ENABLE: 2165 case IPA_VNICC_DISABLE: 2166 req->sub_hdr.data_length += sizeof(req->set_char); 2167 req->set_char.vnic_char = cbctl->param.vnic_char; 2168 break; 2169 case IPA_VNICC_SET_TIMEOUT: 2170 req->getset_timeout.timeout = cbctl->param.timeout; 2171 /* fallthrough */ 2172 case IPA_VNICC_GET_TIMEOUT: 2173 req->sub_hdr.data_length += sizeof(req->getset_timeout); 2174 req->getset_timeout.vnic_char = cbctl->param.vnic_char; 2175 break; 2176 default: 2177 qeth_release_buffer(iob->channel, iob); 2178 return -EOPNOTSUPP; 2179 } 2180 2181 /* send request */ 2182 rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, 2183 (void *) cbctl); 2184 2185 return qeth_l2_vnicc_makerc(card, rc); 2186 } 2187 2188 /* VNICC query VNIC characteristics request */ 2189 static int qeth_l2_vnicc_query_chars(struct qeth_card *card) 2190 { 2191 struct _qeth_l2_vnicc_request_cbctl cbctl; 2192 2193 /* prepare callback control */ 2194 cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS; 2195 2196 QETH_CARD_TEXT(card, 2, "vniccqch"); 2197 return qeth_l2_vnicc_request(card, &cbctl); 2198 } 2199 2200 /* VNICC query sub commands request */ 2201 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, 2202 u32 *sup_cmds) 2203 { 2204 struct _qeth_l2_vnicc_request_cbctl cbctl; 2205 2206 /* prepare callback control */ 2207 cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS; 2208 cbctl.param.vnic_char = vnic_char; 2209 cbctl.result.sup_cmds = sup_cmds; 2210 2211 QETH_CARD_TEXT(card, 2, "vniccqcm"); 2212 return qeth_l2_vnicc_request(card, &cbctl); 2213 } 2214 2215 /* VNICC enable/disable characteristic request */ 2216 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, 2217 u32 cmd) 2218 { 2219 struct _qeth_l2_vnicc_request_cbctl cbctl; 2220 2221 /* prepare callback control */ 2222 cbctl.sub_cmd = cmd; 2223 cbctl.param.vnic_char = vnic_char; 2224 2225 QETH_CARD_TEXT(card, 2, "vniccedc"); 2226 return qeth_l2_vnicc_request(card, &cbctl); 2227 } 2228 2229 /* VNICC get/set timeout for characteristic request */ 2230 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, 2231 u32 cmd, u32 *timeout) 2232 { 2233 struct _qeth_l2_vnicc_request_cbctl cbctl; 2234 2235 /* prepare callback control */ 2236 cbctl.sub_cmd = cmd; 2237 cbctl.param.vnic_char = vnicc; 2238 if (cmd == IPA_VNICC_SET_TIMEOUT) 2239 cbctl.param.timeout = *timeout; 2240 if (cmd == IPA_VNICC_GET_TIMEOUT) 2241 cbctl.result.timeout = timeout; 2242 2243 QETH_CARD_TEXT(card, 2, "vniccgst"); 2244 return qeth_l2_vnicc_request(card, &cbctl); 2245 } 2246 2247 /* set current VNICC flag state; called from sysfs store function */ 2248 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) 2249 { 2250 int rc = 0; 2251 u32 cmd; 2252 2253 QETH_CARD_TEXT(card, 2, "vniccsch"); 2254 2255 /* do not change anything if BridgePort is enabled */ 2256 if (qeth_bridgeport_is_in_use(card)) 2257 return -EBUSY; 2258 2259 /* check if characteristic and enable/disable are supported */ 2260 if (!(card->options.vnicc.sup_chars & vnicc) || 2261 !(card->options.vnicc.set_char_sup & vnicc)) 2262 return -EOPNOTSUPP; 2263 2264 /* set enable/disable command and store wanted characteristic */ 2265 if (state) { 2266 cmd = IPA_VNICC_ENABLE; 2267 card->options.vnicc.wanted_chars |= vnicc; 2268 } else { 2269 cmd = IPA_VNICC_DISABLE; 2270 card->options.vnicc.wanted_chars &= ~vnicc; 2271 } 2272 2273 /* do we need to do anything? */ 2274 if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) 2275 return rc; 2276 2277 /* if card is not ready, simply stop here */ 2278 if (!qeth_card_hw_is_reachable(card)) { 2279 if (state) 2280 card->options.vnicc.cur_chars |= vnicc; 2281 else 2282 card->options.vnicc.cur_chars &= ~vnicc; 2283 return rc; 2284 } 2285 2286 rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); 2287 if (rc) 2288 card->options.vnicc.wanted_chars = 2289 card->options.vnicc.cur_chars; 2290 else { 2291 /* successful online VNICC change; handle special cases */ 2292 if (state && vnicc == QETH_VNICC_RX_BCAST) 2293 card->options.vnicc.rx_bcast_enabled = true; 2294 if (!state && vnicc == QETH_VNICC_LEARNING) 2295 qeth_l2_vnicc_recover_timeout(card, vnicc, 2296 &card->options.vnicc.learning_timeout); 2297 } 2298 2299 return rc; 2300 } 2301 2302 /* get current VNICC flag state; called from sysfs show function */ 2303 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) 2304 { 2305 int rc = 0; 2306 2307 QETH_CARD_TEXT(card, 2, "vniccgch"); 2308 2309 /* do not get anything if BridgePort is enabled */ 2310 if (qeth_bridgeport_is_in_use(card)) 2311 return -EBUSY; 2312 2313 /* check if characteristic is supported */ 2314 if (!(card->options.vnicc.sup_chars & vnicc)) 2315 return -EOPNOTSUPP; 2316 2317 /* if card is ready, query current VNICC state */ 2318 if (qeth_card_hw_is_reachable(card)) 2319 rc = qeth_l2_vnicc_query_chars(card); 2320 2321 *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; 2322 return rc; 2323 } 2324 2325 /* set VNICC timeout; called from sysfs store function. Currently, only learning 2326 * supports timeout 2327 */ 2328 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) 2329 { 2330 int rc = 0; 2331 2332 QETH_CARD_TEXT(card, 2, "vniccsto"); 2333 2334 /* do not change anything if BridgePort is enabled */ 2335 if (qeth_bridgeport_is_in_use(card)) 2336 return -EBUSY; 2337 2338 /* check if characteristic and set_timeout are supported */ 2339 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2340 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2341 return -EOPNOTSUPP; 2342 2343 /* do we need to do anything? */ 2344 if (card->options.vnicc.learning_timeout == timeout) 2345 return rc; 2346 2347 /* if card is not ready, simply store the value internally and return */ 2348 if (!qeth_card_hw_is_reachable(card)) { 2349 card->options.vnicc.learning_timeout = timeout; 2350 return rc; 2351 } 2352 2353 /* send timeout value to card; if successful, store value internally */ 2354 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2355 IPA_VNICC_SET_TIMEOUT, &timeout); 2356 if (!rc) 2357 card->options.vnicc.learning_timeout = timeout; 2358 2359 return rc; 2360 } 2361 2362 /* get current VNICC timeout; called from sysfs show function. Currently, only 2363 * learning supports timeout 2364 */ 2365 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) 2366 { 2367 int rc = 0; 2368 2369 QETH_CARD_TEXT(card, 2, "vniccgto"); 2370 2371 /* do not get anything if BridgePort is enabled */ 2372 if (qeth_bridgeport_is_in_use(card)) 2373 return -EBUSY; 2374 2375 /* check if characteristic and get_timeout are supported */ 2376 if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || 2377 !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) 2378 return -EOPNOTSUPP; 2379 /* if card is ready, get timeout. Otherwise, just return stored value */ 2380 *timeout = card->options.vnicc.learning_timeout; 2381 if (qeth_card_hw_is_reachable(card)) 2382 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, 2383 IPA_VNICC_GET_TIMEOUT, 2384 timeout); 2385 2386 return rc; 2387 } 2388 2389 /* check if VNICC is currently enabled */ 2390 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) 2391 { 2392 /* if everything is turned off, VNICC is not active */ 2393 if (!card->options.vnicc.cur_chars) 2394 return false; 2395 /* default values are only OK if rx_bcast was not enabled by user 2396 * or the card is offline. 2397 */ 2398 if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { 2399 if (!card->options.vnicc.rx_bcast_enabled || 2400 !qeth_card_hw_is_reachable(card)) 2401 return false; 2402 } 2403 return true; 2404 } 2405 2406 /* recover user timeout setting */ 2407 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, 2408 u32 *timeout) 2409 { 2410 if (card->options.vnicc.sup_chars & vnicc && 2411 card->options.vnicc.getset_timeout_sup & vnicc && 2412 !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, 2413 timeout)) 2414 return false; 2415 *timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2416 return true; 2417 } 2418 2419 /* recover user characteristic setting */ 2420 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, 2421 bool enable) 2422 { 2423 u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; 2424 2425 if (card->options.vnicc.sup_chars & vnicc && 2426 card->options.vnicc.set_char_sup & vnicc && 2427 !qeth_l2_vnicc_set_char(card, vnicc, cmd)) 2428 return false; 2429 card->options.vnicc.wanted_chars &= ~vnicc; 2430 card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; 2431 return true; 2432 } 2433 2434 /* (re-)initialize VNICC */ 2435 static void qeth_l2_vnicc_init(struct qeth_card *card) 2436 { 2437 u32 *timeout = &card->options.vnicc.learning_timeout; 2438 unsigned int chars_len, i; 2439 unsigned long chars_tmp; 2440 u32 sup_cmds, vnicc; 2441 bool enable, error; 2442 2443 QETH_CARD_TEXT(card, 2, "vniccini"); 2444 /* reset rx_bcast */ 2445 card->options.vnicc.rx_bcast_enabled = 0; 2446 /* initial query and storage of VNIC characteristics */ 2447 if (qeth_l2_vnicc_query_chars(card)) { 2448 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || 2449 *timeout != QETH_VNICC_DEFAULT_TIMEOUT) 2450 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2451 /* fail quietly if user didn't change the default config */ 2452 card->options.vnicc.sup_chars = 0; 2453 card->options.vnicc.cur_chars = 0; 2454 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2455 return; 2456 } 2457 /* get supported commands for each supported characteristic */ 2458 chars_tmp = card->options.vnicc.sup_chars; 2459 chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; 2460 for_each_set_bit(i, &chars_tmp, chars_len) { 2461 vnicc = BIT(i); 2462 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds); 2463 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) || 2464 !(sup_cmds & IPA_VNICC_GET_TIMEOUT)) 2465 card->options.vnicc.getset_timeout_sup &= ~vnicc; 2466 if (!(sup_cmds & IPA_VNICC_ENABLE) || 2467 !(sup_cmds & IPA_VNICC_DISABLE)) 2468 card->options.vnicc.set_char_sup &= ~vnicc; 2469 } 2470 /* enforce assumed default values and recover settings, if changed */ 2471 error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, 2472 timeout); 2473 chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; 2474 chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; 2475 chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; 2476 for_each_set_bit(i, &chars_tmp, chars_len) { 2477 vnicc = BIT(i); 2478 enable = card->options.vnicc.wanted_chars & vnicc; 2479 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); 2480 } 2481 if (error) 2482 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); 2483 } 2484 2485 /* configure default values of VNIC characteristics */ 2486 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) 2487 { 2488 /* characteristics values */ 2489 card->options.vnicc.sup_chars = QETH_VNICC_ALL; 2490 card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; 2491 card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; 2492 /* supported commands */ 2493 card->options.vnicc.set_char_sup = QETH_VNICC_ALL; 2494 card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; 2495 /* settings wanted by users */ 2496 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; 2497 } 2498 2499 module_init(qeth_l2_init); 2500 module_exit(qeth_l2_exit); 2501 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2502 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2503 MODULE_LICENSE("GPL"); 2504