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 37 static int qeth_l2_verify_dev(struct net_device *dev) 38 { 39 struct qeth_card *card; 40 unsigned long flags; 41 int rc = 0; 42 43 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 44 list_for_each_entry(card, &qeth_core_card_list.list, list) { 45 if (card->dev == dev) { 46 rc = QETH_REAL_CARD; 47 break; 48 } 49 } 50 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 51 52 return rc; 53 } 54 55 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 56 { 57 struct qeth_card *card; 58 struct net_device *ndev; 59 __u16 temp_dev_no; 60 unsigned long flags; 61 struct ccw_dev_id read_devid; 62 63 ndev = NULL; 64 memcpy(&temp_dev_no, read_dev_no, 2); 65 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 66 list_for_each_entry(card, &qeth_core_card_list.list, list) { 67 ccw_device_get_id(CARD_RDEV(card), &read_devid); 68 if (read_devid.devno == temp_dev_no) { 69 ndev = card->dev; 70 break; 71 } 72 } 73 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 74 return ndev; 75 } 76 77 static int qeth_setdel_makerc(struct qeth_card *card, int retcode) 78 { 79 int rc; 80 81 if (retcode) 82 QETH_CARD_TEXT_(card, 2, "err%04x", retcode); 83 switch (retcode) { 84 case IPA_RC_SUCCESS: 85 rc = 0; 86 break; 87 case IPA_RC_L2_UNSUPPORTED_CMD: 88 rc = -EOPNOTSUPP; 89 break; 90 case IPA_RC_L2_ADDR_TABLE_FULL: 91 rc = -ENOSPC; 92 break; 93 case IPA_RC_L2_DUP_MAC: 94 case IPA_RC_L2_DUP_LAYER3_MAC: 95 rc = -EEXIST; 96 break; 97 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 98 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 99 rc = -EPERM; 100 break; 101 case IPA_RC_L2_MAC_NOT_FOUND: 102 rc = -ENOENT; 103 break; 104 case -ENOMEM: 105 rc = -ENOMEM; 106 break; 107 default: 108 rc = -EIO; 109 break; 110 } 111 return rc; 112 } 113 114 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 115 enum qeth_ipa_cmds ipacmd) 116 { 117 struct qeth_ipa_cmd *cmd; 118 struct qeth_cmd_buffer *iob; 119 120 QETH_CARD_TEXT(card, 2, "L2sdmac"); 121 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 122 if (!iob) 123 return -ENOMEM; 124 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 125 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 126 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 127 return qeth_setdel_makerc(card, qeth_send_ipa_cmd(card, iob, 128 NULL, NULL)); 129 } 130 131 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 132 { 133 int rc; 134 135 QETH_CARD_TEXT(card, 2, "L2Setmac"); 136 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); 137 if (rc == 0) { 138 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 139 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN); 140 dev_info(&card->gdev->dev, 141 "MAC address %pM successfully registered on device %s\n", 142 card->dev->dev_addr, card->dev->name); 143 } else { 144 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 145 switch (rc) { 146 case -EEXIST: 147 dev_warn(&card->gdev->dev, 148 "MAC address %pM already exists\n", mac); 149 break; 150 case -EPERM: 151 dev_warn(&card->gdev->dev, 152 "MAC address %pM is not authorized\n", mac); 153 break; 154 } 155 } 156 return rc; 157 } 158 159 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 160 { 161 int rc; 162 163 QETH_CARD_TEXT(card, 2, "L2Delmac"); 164 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 165 return 0; 166 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC); 167 if (rc == 0) 168 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 169 return rc; 170 } 171 172 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) 173 { 174 int rc; 175 176 QETH_CARD_TEXT(card, 2, "L2Sgmac"); 177 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC); 178 if (rc == -EEXIST) 179 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n", 180 mac, QETH_CARD_IFNAME(card)); 181 else if (rc) 182 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n", 183 mac, QETH_CARD_IFNAME(card), rc); 184 return rc; 185 } 186 187 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) 188 { 189 int rc; 190 191 QETH_CARD_TEXT(card, 2, "L2Dgmac"); 192 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC); 193 if (rc) 194 QETH_DBF_MESSAGE(2, 195 "Could not delete group MAC %pM on %s: %d\n", 196 mac, QETH_CARD_IFNAME(card), rc); 197 return rc; 198 } 199 200 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac) 201 { 202 if (mac->is_uc) { 203 return qeth_l2_send_setdelmac(card, mac->mac_addr, 204 IPA_CMD_SETVMAC); 205 } else { 206 return qeth_l2_send_setgroupmac(card, mac->mac_addr); 207 } 208 } 209 210 static int qeth_l2_remove_mac(struct qeth_card *card, struct qeth_mac *mac) 211 { 212 if (mac->is_uc) { 213 return qeth_l2_send_setdelmac(card, mac->mac_addr, 214 IPA_CMD_DELVMAC); 215 } else { 216 return qeth_l2_send_delgroupmac(card, mac->mac_addr); 217 } 218 } 219 220 static void qeth_l2_del_all_macs(struct qeth_card *card) 221 { 222 struct qeth_mac *mac; 223 struct hlist_node *tmp; 224 int i; 225 226 spin_lock_bh(&card->mclock); 227 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 228 hash_del(&mac->hnode); 229 kfree(mac); 230 } 231 spin_unlock_bh(&card->mclock); 232 } 233 234 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb) 235 { 236 if (card->info.type == QETH_CARD_TYPE_OSN) 237 return RTN_UNSPEC; 238 if (is_broadcast_ether_addr(skb->data)) 239 return RTN_BROADCAST; 240 if (is_multicast_ether_addr(skb->data)) 241 return RTN_MULTICAST; 242 return RTN_UNSPEC; 243 } 244 245 static void qeth_l2_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr, 246 struct sk_buff *skb) 247 { 248 struct iphdr *iph = ip_hdr(skb); 249 250 /* tcph->check contains already the pseudo hdr checksum 251 * so just set the header flags 252 */ 253 if (iph->protocol == IPPROTO_UDP) 254 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP; 255 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ | 256 QETH_HDR_EXT_CSUM_HDR_REQ; 257 iph->check = 0; 258 if (card->options.performance_stats) 259 card->perf_stats.tx_csum++; 260 } 261 262 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb, 263 int cast_type, unsigned int data_len) 264 { 265 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 266 267 memset(hdr, 0, sizeof(struct qeth_hdr)); 268 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 269 hdr->hdr.l2.pkt_length = data_len; 270 271 /* set byte byte 3 to casting flags */ 272 if (cast_type == RTN_MULTICAST) 273 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 274 else if (cast_type == RTN_BROADCAST) 275 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 276 else 277 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 278 279 /* VSWITCH relies on the VLAN 280 * information to be present in 281 * the QDIO header */ 282 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 283 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 284 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 285 } 286 } 287 288 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 289 struct qeth_reply *reply, unsigned long data) 290 { 291 struct qeth_ipa_cmd *cmd; 292 293 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 294 cmd = (struct qeth_ipa_cmd *) data; 295 if (cmd->hdr.return_code) { 296 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. " 297 "Continuing\n", cmd->data.setdelvlan.vlan_id, 298 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 299 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 300 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 301 } 302 return 0; 303 } 304 305 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 306 enum qeth_ipa_cmds ipacmd) 307 { 308 struct qeth_ipa_cmd *cmd; 309 struct qeth_cmd_buffer *iob; 310 311 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 312 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 313 if (!iob) 314 return -ENOMEM; 315 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 316 cmd->data.setdelvlan.vlan_id = i; 317 return qeth_send_ipa_cmd(card, iob, 318 qeth_l2_send_setdelvlan_cb, NULL); 319 } 320 321 static void qeth_l2_process_vlans(struct qeth_card *card) 322 { 323 struct qeth_vlan_vid *id; 324 QETH_CARD_TEXT(card, 3, "L2prcvln"); 325 spin_lock_bh(&card->vlanlock); 326 list_for_each_entry(id, &card->vid_list, list) { 327 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 328 } 329 spin_unlock_bh(&card->vlanlock); 330 } 331 332 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, 333 __be16 proto, u16 vid) 334 { 335 struct qeth_card *card = dev->ml_priv; 336 struct qeth_vlan_vid *id; 337 int rc; 338 339 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 340 if (!vid) 341 return 0; 342 if (card->info.type == QETH_CARD_TYPE_OSM) { 343 QETH_CARD_TEXT(card, 3, "aidOSM"); 344 return 0; 345 } 346 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 347 QETH_CARD_TEXT(card, 3, "aidREC"); 348 return 0; 349 } 350 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 351 if (id) { 352 id->vid = vid; 353 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 354 if (rc) { 355 kfree(id); 356 return rc; 357 } 358 spin_lock_bh(&card->vlanlock); 359 list_add_tail(&id->list, &card->vid_list); 360 spin_unlock_bh(&card->vlanlock); 361 } else { 362 return -ENOMEM; 363 } 364 return 0; 365 } 366 367 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, 368 __be16 proto, u16 vid) 369 { 370 struct qeth_vlan_vid *id, *tmpid = NULL; 371 struct qeth_card *card = dev->ml_priv; 372 int rc = 0; 373 374 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 375 if (card->info.type == QETH_CARD_TYPE_OSM) { 376 QETH_CARD_TEXT(card, 3, "kidOSM"); 377 return 0; 378 } 379 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 380 QETH_CARD_TEXT(card, 3, "kidREC"); 381 return 0; 382 } 383 spin_lock_bh(&card->vlanlock); 384 list_for_each_entry(id, &card->vid_list, list) { 385 if (id->vid == vid) { 386 list_del(&id->list); 387 tmpid = id; 388 break; 389 } 390 } 391 spin_unlock_bh(&card->vlanlock); 392 if (tmpid) { 393 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 394 kfree(tmpid); 395 } 396 qeth_l2_set_rx_mode(card->dev); 397 return rc; 398 } 399 400 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 401 { 402 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 403 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 404 405 qeth_set_allowed_threads(card, 0, 1); 406 if (card->read.state == CH_STATE_UP && 407 card->write.state == CH_STATE_UP && 408 (card->state == CARD_STATE_UP)) { 409 if (recovery_mode && 410 card->info.type != QETH_CARD_TYPE_OSN) { 411 qeth_l2_stop(card->dev); 412 } else { 413 rtnl_lock(); 414 dev_close(card->dev); 415 rtnl_unlock(); 416 } 417 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 418 card->state = CARD_STATE_SOFTSETUP; 419 } 420 if (card->state == CARD_STATE_SOFTSETUP) { 421 qeth_l2_del_all_macs(card); 422 qeth_clear_ipacmd_list(card); 423 card->state = CARD_STATE_HARDSETUP; 424 } 425 if (card->state == CARD_STATE_HARDSETUP) { 426 qeth_qdio_clear_card(card, 0); 427 qeth_clear_qdio_buffers(card); 428 qeth_clear_working_pool_list(card); 429 card->state = CARD_STATE_DOWN; 430 } 431 if (card->state == CARD_STATE_DOWN) { 432 qeth_clear_cmd_buffers(&card->read); 433 qeth_clear_cmd_buffers(&card->write); 434 } 435 } 436 437 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 438 int budget, int *done) 439 { 440 int work_done = 0; 441 struct sk_buff *skb; 442 struct qeth_hdr *hdr; 443 unsigned int len; 444 445 *done = 0; 446 WARN_ON_ONCE(!budget); 447 while (budget) { 448 skb = qeth_core_get_next_skb(card, 449 &card->qdio.in_q->bufs[card->rx.b_index], 450 &card->rx.b_element, &card->rx.e_offset, &hdr); 451 if (!skb) { 452 *done = 1; 453 break; 454 } 455 skb->dev = card->dev; 456 switch (hdr->hdr.l2.id) { 457 case QETH_HEADER_TYPE_LAYER2: 458 skb->pkt_type = PACKET_HOST; 459 skb->protocol = eth_type_trans(skb, skb->dev); 460 if ((card->dev->features & NETIF_F_RXCSUM) 461 && ((hdr->hdr.l2.flags[1] & 462 (QETH_HDR_EXT_CSUM_HDR_REQ | 463 QETH_HDR_EXT_CSUM_TRANSP_REQ)) == 464 (QETH_HDR_EXT_CSUM_HDR_REQ | 465 QETH_HDR_EXT_CSUM_TRANSP_REQ))) 466 skb->ip_summed = CHECKSUM_UNNECESSARY; 467 else 468 skb->ip_summed = CHECKSUM_NONE; 469 if (skb->protocol == htons(ETH_P_802_2)) 470 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 471 len = skb->len; 472 napi_gro_receive(&card->napi, skb); 473 break; 474 case QETH_HEADER_TYPE_OSN: 475 if (card->info.type == QETH_CARD_TYPE_OSN) { 476 skb_push(skb, sizeof(struct qeth_hdr)); 477 skb_copy_to_linear_data(skb, hdr, 478 sizeof(struct qeth_hdr)); 479 len = skb->len; 480 card->osn_info.data_cb(skb); 481 break; 482 } 483 /* else unknown */ 484 default: 485 dev_kfree_skb_any(skb); 486 QETH_CARD_TEXT(card, 3, "inbunkno"); 487 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 488 continue; 489 } 490 work_done++; 491 budget--; 492 card->stats.rx_packets++; 493 card->stats.rx_bytes += len; 494 } 495 return work_done; 496 } 497 498 static int qeth_l2_request_initial_mac(struct qeth_card *card) 499 { 500 int rc = 0; 501 char vendor_pre[] = {0x02, 0x00, 0x00}; 502 503 QETH_DBF_TEXT(SETUP, 2, "l2reqmac"); 504 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 505 506 if (MACHINE_IS_VM) { 507 rc = qeth_vm_request_mac(card); 508 if (!rc) 509 goto out; 510 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n", 511 CARD_BUS_ID(card), rc); 512 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc); 513 /* fall back to alternative mechanism: */ 514 } 515 516 if (card->info.type == QETH_CARD_TYPE_IQD || 517 card->info.type == QETH_CARD_TYPE_OSM || 518 card->info.type == QETH_CARD_TYPE_OSX || 519 card->info.guestlan) { 520 rc = qeth_setadpparms_change_macaddr(card); 521 if (rc) { 522 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 523 "device %s: x%x\n", CARD_BUS_ID(card), rc); 524 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); 525 return rc; 526 } 527 } else { 528 eth_random_addr(card->dev->dev_addr); 529 memcpy(card->dev->dev_addr, vendor_pre, 3); 530 } 531 out: 532 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len); 533 return 0; 534 } 535 536 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 537 { 538 struct sockaddr *addr = p; 539 struct qeth_card *card = dev->ml_priv; 540 int rc = 0; 541 542 QETH_CARD_TEXT(card, 3, "setmac"); 543 544 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { 545 QETH_CARD_TEXT(card, 3, "setmcINV"); 546 return -EOPNOTSUPP; 547 } 548 549 if (card->info.type == QETH_CARD_TYPE_OSN || 550 card->info.type == QETH_CARD_TYPE_OSM || 551 card->info.type == QETH_CARD_TYPE_OSX) { 552 QETH_CARD_TEXT(card, 3, "setmcTYP"); 553 return -EOPNOTSUPP; 554 } 555 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN); 556 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 557 QETH_CARD_TEXT(card, 3, "setmcREC"); 558 return -ERESTARTSYS; 559 } 560 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 561 if (!rc || (rc == -ENOENT)) 562 rc = qeth_l2_send_setmac(card, addr->sa_data); 563 return rc ? -EINVAL : 0; 564 } 565 566 static void qeth_promisc_to_bridge(struct qeth_card *card) 567 { 568 struct net_device *dev = card->dev; 569 enum qeth_ipa_promisc_modes promisc_mode; 570 int role; 571 int rc; 572 573 QETH_CARD_TEXT(card, 3, "pmisc2br"); 574 575 if (!card->options.sbp.reflect_promisc) 576 return; 577 promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON 578 : SET_PROMISC_MODE_OFF; 579 if (promisc_mode == card->info.promisc_mode) 580 return; 581 582 if (promisc_mode == SET_PROMISC_MODE_ON) { 583 if (card->options.sbp.reflect_promisc_primary) 584 role = QETH_SBP_ROLE_PRIMARY; 585 else 586 role = QETH_SBP_ROLE_SECONDARY; 587 } else 588 role = QETH_SBP_ROLE_NONE; 589 590 rc = qeth_bridgeport_setrole(card, role); 591 QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", 592 (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); 593 if (!rc) { 594 card->options.sbp.role = role; 595 card->info.promisc_mode = promisc_mode; 596 } 597 598 } 599 /* New MAC address is added to the hash table and marked to be written on card 600 * only if there is not in the hash table storage already 601 * 602 */ 603 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, 604 u8 is_uc) 605 { 606 u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); 607 struct qeth_mac *mac; 608 609 hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { 610 if (is_uc == mac->is_uc && 611 !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) { 612 mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; 613 return; 614 } 615 } 616 617 mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); 618 619 if (!mac) 620 return; 621 622 memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN); 623 mac->is_uc = is_uc; 624 mac->disp_flag = QETH_DISP_ADDR_ADD; 625 626 hash_add(card->mac_htable, &mac->hnode, mac_hash); 627 } 628 629 static void qeth_l2_set_rx_mode(struct net_device *dev) 630 { 631 struct qeth_card *card = dev->ml_priv; 632 struct netdev_hw_addr *ha; 633 struct qeth_mac *mac; 634 struct hlist_node *tmp; 635 int i; 636 int rc; 637 638 if (card->info.type == QETH_CARD_TYPE_OSN) 639 return; 640 641 QETH_CARD_TEXT(card, 3, "setmulti"); 642 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 643 (card->state != CARD_STATE_UP)) 644 return; 645 646 spin_lock_bh(&card->mclock); 647 648 netdev_for_each_mc_addr(ha, dev) 649 qeth_l2_add_mac(card, ha, 0); 650 651 netdev_for_each_uc_addr(ha, dev) 652 qeth_l2_add_mac(card, ha, 1); 653 654 hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { 655 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) { 656 qeth_l2_remove_mac(card, mac); 657 hash_del(&mac->hnode); 658 kfree(mac); 659 660 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) { 661 rc = qeth_l2_write_mac(card, mac); 662 if (rc) { 663 hash_del(&mac->hnode); 664 kfree(mac); 665 } else 666 mac->disp_flag = QETH_DISP_ADDR_DELETE; 667 } else 668 mac->disp_flag = QETH_DISP_ADDR_DELETE; 669 } 670 671 spin_unlock_bh(&card->mclock); 672 673 if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 674 qeth_setadp_promisc_mode(card); 675 else 676 qeth_promisc_to_bridge(card); 677 } 678 679 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb, 680 struct qeth_qdio_out_q *queue, int cast_type) 681 { 682 unsigned int data_offset = ETH_HLEN; 683 struct qeth_hdr *hdr; 684 int rc; 685 686 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); 687 if (!hdr) 688 return -ENOMEM; 689 qeth_l2_fill_header(hdr, skb, cast_type, skb->len); 690 skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr), 691 data_offset); 692 693 if (!qeth_get_elements_no(card, skb, 1, data_offset)) { 694 rc = -E2BIG; 695 goto out; 696 } 697 rc = qeth_do_send_packet_fast(card, queue, skb, hdr, data_offset, 698 sizeof(*hdr) + data_offset); 699 out: 700 if (rc) 701 kmem_cache_free(qeth_core_header_cache, hdr); 702 return rc; 703 } 704 705 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb, 706 struct qeth_qdio_out_q *queue, int cast_type) 707 { 708 int push_len = sizeof(struct qeth_hdr); 709 unsigned int elements, nr_frags; 710 unsigned int hdr_elements = 0; 711 struct qeth_hdr *hdr = NULL; 712 unsigned int hd_len = 0; 713 int rc; 714 715 /* fix hardware limitation: as long as we do not have sbal 716 * chaining we can not send long frag lists 717 */ 718 if (!qeth_get_elements_no(card, skb, 0, 0)) { 719 rc = skb_linearize(skb); 720 721 if (card->options.performance_stats) { 722 if (rc) 723 card->perf_stats.tx_linfail++; 724 else 725 card->perf_stats.tx_lin++; 726 } 727 if (rc) 728 return rc; 729 } 730 nr_frags = skb_shinfo(skb)->nr_frags; 731 732 rc = skb_cow_head(skb, push_len); 733 if (rc) 734 return rc; 735 push_len = qeth_push_hdr(skb, &hdr, push_len); 736 if (push_len < 0) 737 return push_len; 738 if (!push_len) { 739 /* hdr was allocated from cache */ 740 hd_len = sizeof(*hdr); 741 hdr_elements = 1; 742 } 743 qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len); 744 if (skb->ip_summed == CHECKSUM_PARTIAL) 745 qeth_l2_hdr_csum(card, hdr, skb); 746 747 elements = qeth_get_elements_no(card, skb, hdr_elements, 0); 748 if (!elements) { 749 rc = -E2BIG; 750 goto out; 751 } 752 elements += hdr_elements; 753 754 /* TODO: remove the skb_orphan() once TX completion is fast enough */ 755 skb_orphan(skb); 756 rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements); 757 out: 758 if (!rc) { 759 if (card->options.performance_stats && nr_frags) { 760 card->perf_stats.sg_skbs_sent++; 761 /* nr_frags + skb->data */ 762 card->perf_stats.sg_frags_sent += nr_frags + 1; 763 } 764 } else { 765 if (hd_len) 766 kmem_cache_free(qeth_core_header_cache, hdr); 767 if (rc == -EBUSY) 768 /* roll back to ETH header */ 769 skb_pull(skb, push_len); 770 } 771 return rc; 772 } 773 774 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, 775 struct qeth_qdio_out_q *queue) 776 { 777 unsigned int elements; 778 struct qeth_hdr *hdr; 779 780 if (skb->protocol == htons(ETH_P_IPV6)) 781 return -EPROTONOSUPPORT; 782 783 hdr = (struct qeth_hdr *)skb->data; 784 elements = qeth_get_elements_no(card, skb, 0, 0); 785 if (!elements) 786 return -E2BIG; 787 if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr))) 788 return -EINVAL; 789 return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements); 790 } 791 792 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, 793 struct net_device *dev) 794 { 795 struct qeth_card *card = dev->ml_priv; 796 int cast_type = qeth_l2_get_cast_type(card, skb); 797 struct qeth_qdio_out_q *queue; 798 int tx_bytes = skb->len; 799 int rc; 800 801 if (card->qdio.do_prio_queueing || (cast_type && 802 card->info.is_multicast_different)) 803 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb, 804 qeth_get_ip_version(skb), cast_type)]; 805 else 806 queue = card->qdio.out_qs[card->qdio.default_out_queue]; 807 808 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 809 card->stats.tx_carrier_errors++; 810 goto tx_drop; 811 } 812 813 if (card->options.performance_stats) { 814 card->perf_stats.outbound_cnt++; 815 card->perf_stats.outbound_start_time = qeth_get_micros(); 816 } 817 netif_stop_queue(dev); 818 819 switch (card->info.type) { 820 case QETH_CARD_TYPE_OSN: 821 rc = qeth_l2_xmit_osn(card, skb, queue); 822 break; 823 case QETH_CARD_TYPE_IQD: 824 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type); 825 break; 826 default: 827 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type); 828 } 829 830 if (!rc) { 831 card->stats.tx_packets++; 832 card->stats.tx_bytes += tx_bytes; 833 if (card->options.performance_stats) 834 card->perf_stats.outbound_time += qeth_get_micros() - 835 card->perf_stats.outbound_start_time; 836 netif_wake_queue(dev); 837 return NETDEV_TX_OK; 838 } else if (rc == -EBUSY) { 839 return NETDEV_TX_BUSY; 840 } /* else fall through */ 841 842 tx_drop: 843 card->stats.tx_dropped++; 844 card->stats.tx_errors++; 845 dev_kfree_skb_any(skb); 846 netif_wake_queue(dev); 847 return NETDEV_TX_OK; 848 } 849 850 static int __qeth_l2_open(struct net_device *dev) 851 { 852 struct qeth_card *card = dev->ml_priv; 853 int rc = 0; 854 855 QETH_CARD_TEXT(card, 4, "qethopen"); 856 if (card->state == CARD_STATE_UP) 857 return rc; 858 if (card->state != CARD_STATE_SOFTSETUP) 859 return -ENODEV; 860 861 if ((card->info.type != QETH_CARD_TYPE_OSN) && 862 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 863 QETH_CARD_TEXT(card, 4, "nomacadr"); 864 return -EPERM; 865 } 866 card->data.state = CH_STATE_UP; 867 card->state = CARD_STATE_UP; 868 netif_start_queue(dev); 869 870 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 871 napi_enable(&card->napi); 872 napi_schedule(&card->napi); 873 } else 874 rc = -EIO; 875 return rc; 876 } 877 878 static int qeth_l2_open(struct net_device *dev) 879 { 880 struct qeth_card *card = dev->ml_priv; 881 882 QETH_CARD_TEXT(card, 5, "qethope_"); 883 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 884 QETH_CARD_TEXT(card, 3, "openREC"); 885 return -ERESTARTSYS; 886 } 887 return __qeth_l2_open(dev); 888 } 889 890 static int qeth_l2_stop(struct net_device *dev) 891 { 892 struct qeth_card *card = dev->ml_priv; 893 894 QETH_CARD_TEXT(card, 4, "qethstop"); 895 netif_tx_disable(dev); 896 if (card->state == CARD_STATE_UP) { 897 card->state = CARD_STATE_SOFTSETUP; 898 napi_disable(&card->napi); 899 } 900 return 0; 901 } 902 903 static const struct device_type qeth_l2_devtype = { 904 .name = "qeth_layer2", 905 .groups = qeth_l2_attr_groups, 906 }; 907 908 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 909 { 910 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 911 int rc; 912 913 if (gdev->dev.type == &qeth_generic_devtype) { 914 rc = qeth_l2_create_device_attributes(&gdev->dev); 915 if (rc) 916 return rc; 917 } 918 INIT_LIST_HEAD(&card->vid_list); 919 hash_init(card->mac_htable); 920 card->options.layer2 = 1; 921 card->info.hwtrap = 0; 922 return 0; 923 } 924 925 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 926 { 927 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 928 929 if (cgdev->dev.type == &qeth_generic_devtype) 930 qeth_l2_remove_device_attributes(&cgdev->dev); 931 qeth_set_allowed_threads(card, 0, 1); 932 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 933 934 if (cgdev->state == CCWGROUP_ONLINE) 935 qeth_l2_set_offline(cgdev); 936 937 if (card->dev) { 938 netif_napi_del(&card->napi); 939 unregister_netdev(card->dev); 940 card->dev = NULL; 941 } 942 return; 943 } 944 945 static const struct ethtool_ops qeth_l2_ethtool_ops = { 946 .get_link = ethtool_op_get_link, 947 .get_strings = qeth_core_get_strings, 948 .get_ethtool_stats = qeth_core_get_ethtool_stats, 949 .get_sset_count = qeth_core_get_sset_count, 950 .get_drvinfo = qeth_core_get_drvinfo, 951 .get_link_ksettings = qeth_core_ethtool_get_link_ksettings, 952 }; 953 954 static const struct ethtool_ops qeth_l2_osn_ops = { 955 .get_strings = qeth_core_get_strings, 956 .get_ethtool_stats = qeth_core_get_ethtool_stats, 957 .get_sset_count = qeth_core_get_sset_count, 958 .get_drvinfo = qeth_core_get_drvinfo, 959 }; 960 961 static const struct net_device_ops qeth_l2_netdev_ops = { 962 .ndo_open = qeth_l2_open, 963 .ndo_stop = qeth_l2_stop, 964 .ndo_get_stats = qeth_get_stats, 965 .ndo_start_xmit = qeth_l2_hard_start_xmit, 966 .ndo_validate_addr = eth_validate_addr, 967 .ndo_set_rx_mode = qeth_l2_set_rx_mode, 968 .ndo_do_ioctl = qeth_do_ioctl, 969 .ndo_set_mac_address = qeth_l2_set_mac_address, 970 .ndo_change_mtu = qeth_change_mtu, 971 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 972 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 973 .ndo_tx_timeout = qeth_tx_timeout, 974 .ndo_fix_features = qeth_fix_features, 975 .ndo_set_features = qeth_set_features 976 }; 977 978 static int qeth_l2_setup_netdev(struct qeth_card *card) 979 { 980 switch (card->info.type) { 981 case QETH_CARD_TYPE_IQD: 982 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN, 983 ether_setup); 984 break; 985 case QETH_CARD_TYPE_OSN: 986 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN, 987 ether_setup); 988 break; 989 default: 990 card->dev = alloc_etherdev(0); 991 } 992 993 if (!card->dev) 994 return -ENODEV; 995 996 card->dev->ml_priv = card; 997 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 998 card->dev->mtu = card->info.initial_mtu; 999 card->dev->min_mtu = 64; 1000 card->dev->max_mtu = ETH_MAX_MTU; 1001 card->dev->netdev_ops = &qeth_l2_netdev_ops; 1002 if (card->info.type == QETH_CARD_TYPE_OSN) { 1003 card->dev->ethtool_ops = &qeth_l2_osn_ops; 1004 card->dev->flags |= IFF_NOARP; 1005 } else { 1006 card->dev->ethtool_ops = &qeth_l2_ethtool_ops; 1007 } 1008 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; 1009 if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) { 1010 card->dev->hw_features = NETIF_F_SG; 1011 card->dev->vlan_features = NETIF_F_SG; 1012 /* OSA 3S and earlier has no RX/TX support */ 1013 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { 1014 card->dev->hw_features |= NETIF_F_IP_CSUM; 1015 card->dev->vlan_features |= NETIF_F_IP_CSUM; 1016 } 1017 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { 1018 card->dev->hw_features |= NETIF_F_RXCSUM; 1019 card->dev->vlan_features |= NETIF_F_RXCSUM; 1020 } 1021 } 1022 if (card->info.type != QETH_CARD_TYPE_OSN && 1023 card->info.type != QETH_CARD_TYPE_IQD) { 1024 card->dev->priv_flags &= ~IFF_TX_SKB_SHARING; 1025 card->dev->needed_headroom = sizeof(struct qeth_hdr); 1026 } 1027 1028 card->info.broadcast_capable = 1; 1029 qeth_l2_request_initial_mac(card); 1030 card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) * 1031 PAGE_SIZE; 1032 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 1033 netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); 1034 netif_carrier_off(card->dev); 1035 return register_netdev(card->dev); 1036 } 1037 1038 static int qeth_l2_start_ipassists(struct qeth_card *card) 1039 { 1040 /* configure isolation level */ 1041 if (qeth_set_access_ctrl_online(card, 0)) 1042 return -ENODEV; 1043 return 0; 1044 } 1045 1046 static void qeth_l2_trace_features(struct qeth_card *card) 1047 { 1048 QETH_CARD_TEXT(card, 2, "l2featur"); 1049 QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, 1050 sizeof(card->options.sbp.supported_funcs)); 1051 } 1052 1053 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 1054 { 1055 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1056 int rc = 0; 1057 enum qeth_card_states recover_flag; 1058 1059 mutex_lock(&card->discipline_mutex); 1060 mutex_lock(&card->conf_mutex); 1061 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 1062 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 1063 1064 recover_flag = card->state; 1065 rc = qeth_core_hardsetup_card(card); 1066 if (rc) { 1067 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); 1068 rc = -ENODEV; 1069 goto out_remove; 1070 } 1071 qeth_bridgeport_query_support(card); 1072 if (card->options.sbp.supported_funcs) 1073 dev_info(&card->gdev->dev, 1074 "The device represents a Bridge Capable Port\n"); 1075 qeth_trace_features(card); 1076 qeth_l2_trace_features(card); 1077 1078 if (!card->dev && qeth_l2_setup_netdev(card)) { 1079 rc = -ENODEV; 1080 goto out_remove; 1081 } 1082 1083 if (card->info.type != QETH_CARD_TYPE_OSN) 1084 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1085 1086 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1087 if (card->info.hwtrap && 1088 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1089 card->info.hwtrap = 0; 1090 } else 1091 card->info.hwtrap = 0; 1092 1093 qeth_l2_setup_bridgeport_attrs(card); 1094 1095 card->state = CARD_STATE_HARDSETUP; 1096 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1097 qeth_print_status_message(card); 1098 1099 /* softsetup */ 1100 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1101 1102 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1103 (card->info.type == QETH_CARD_TYPE_OSX)) { 1104 rc = qeth_l2_start_ipassists(card); 1105 if (rc) 1106 goto out_remove; 1107 } 1108 1109 if (card->info.type != QETH_CARD_TYPE_OSN && 1110 card->info.type != QETH_CARD_TYPE_OSM) 1111 qeth_l2_process_vlans(card); 1112 1113 netif_tx_disable(card->dev); 1114 1115 rc = qeth_init_qdio_queues(card); 1116 if (rc) { 1117 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1118 rc = -ENODEV; 1119 goto out_remove; 1120 } 1121 card->state = CARD_STATE_SOFTSETUP; 1122 if (card->lan_online) 1123 netif_carrier_on(card->dev); 1124 else 1125 netif_carrier_off(card->dev); 1126 1127 qeth_set_allowed_threads(card, 0xffffffff, 0); 1128 if (recover_flag == CARD_STATE_RECOVER) { 1129 if (recovery_mode && 1130 card->info.type != QETH_CARD_TYPE_OSN) { 1131 __qeth_l2_open(card->dev); 1132 } else { 1133 rtnl_lock(); 1134 dev_open(card->dev); 1135 rtnl_unlock(); 1136 } 1137 /* this also sets saved unicast addresses */ 1138 qeth_l2_set_rx_mode(card->dev); 1139 rtnl_lock(); 1140 qeth_recover_features(card->dev); 1141 rtnl_unlock(); 1142 } 1143 /* let user_space know that device is online */ 1144 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1145 mutex_unlock(&card->conf_mutex); 1146 mutex_unlock(&card->discipline_mutex); 1147 return 0; 1148 1149 out_remove: 1150 qeth_l2_stop_card(card, 0); 1151 ccw_device_set_offline(CARD_DDEV(card)); 1152 ccw_device_set_offline(CARD_WDEV(card)); 1153 ccw_device_set_offline(CARD_RDEV(card)); 1154 qdio_free(CARD_DDEV(card)); 1155 if (recover_flag == CARD_STATE_RECOVER) 1156 card->state = CARD_STATE_RECOVER; 1157 else 1158 card->state = CARD_STATE_DOWN; 1159 mutex_unlock(&card->conf_mutex); 1160 mutex_unlock(&card->discipline_mutex); 1161 return rc; 1162 } 1163 1164 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1165 { 1166 return __qeth_l2_set_online(gdev, 0); 1167 } 1168 1169 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1170 int recovery_mode) 1171 { 1172 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1173 int rc = 0, rc2 = 0, rc3 = 0; 1174 enum qeth_card_states recover_flag; 1175 1176 mutex_lock(&card->discipline_mutex); 1177 mutex_lock(&card->conf_mutex); 1178 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1179 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1180 1181 if (card->dev && netif_carrier_ok(card->dev)) 1182 netif_carrier_off(card->dev); 1183 recover_flag = card->state; 1184 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1185 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1186 card->info.hwtrap = 1; 1187 } 1188 qeth_l2_stop_card(card, recovery_mode); 1189 rc = ccw_device_set_offline(CARD_DDEV(card)); 1190 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1191 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1192 if (!rc) 1193 rc = (rc2) ? rc2 : rc3; 1194 if (rc) 1195 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1196 qdio_free(CARD_DDEV(card)); 1197 if (recover_flag == CARD_STATE_UP) 1198 card->state = CARD_STATE_RECOVER; 1199 /* let user_space know that device is offline */ 1200 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1201 mutex_unlock(&card->conf_mutex); 1202 mutex_unlock(&card->discipline_mutex); 1203 return 0; 1204 } 1205 1206 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1207 { 1208 return __qeth_l2_set_offline(cgdev, 0); 1209 } 1210 1211 static int qeth_l2_recover(void *ptr) 1212 { 1213 struct qeth_card *card; 1214 int rc = 0; 1215 1216 card = (struct qeth_card *) ptr; 1217 QETH_CARD_TEXT(card, 2, "recover1"); 1218 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1219 return 0; 1220 QETH_CARD_TEXT(card, 2, "recover2"); 1221 dev_warn(&card->gdev->dev, 1222 "A recovery process has been started for the device\n"); 1223 qeth_set_recovery_task(card); 1224 __qeth_l2_set_offline(card->gdev, 1); 1225 rc = __qeth_l2_set_online(card->gdev, 1); 1226 if (!rc) 1227 dev_info(&card->gdev->dev, 1228 "Device successfully recovered!\n"); 1229 else { 1230 qeth_close_dev(card); 1231 dev_warn(&card->gdev->dev, "The qeth device driver " 1232 "failed to recover an error on the device\n"); 1233 } 1234 qeth_clear_recovery_task(card); 1235 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1236 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1237 return 0; 1238 } 1239 1240 static int __init qeth_l2_init(void) 1241 { 1242 pr_info("register layer 2 discipline\n"); 1243 return 0; 1244 } 1245 1246 static void __exit qeth_l2_exit(void) 1247 { 1248 pr_info("unregister layer 2 discipline\n"); 1249 } 1250 1251 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1252 { 1253 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1254 1255 if (card->dev) 1256 netif_device_detach(card->dev); 1257 qeth_set_allowed_threads(card, 0, 1); 1258 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1259 if (gdev->state == CCWGROUP_OFFLINE) 1260 return 0; 1261 if (card->state == CARD_STATE_UP) { 1262 if (card->info.hwtrap) 1263 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1264 __qeth_l2_set_offline(card->gdev, 1); 1265 } else 1266 __qeth_l2_set_offline(card->gdev, 0); 1267 return 0; 1268 } 1269 1270 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1271 { 1272 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1273 int rc = 0; 1274 1275 if (gdev->state == CCWGROUP_OFFLINE) 1276 goto out; 1277 1278 if (card->state == CARD_STATE_RECOVER) { 1279 rc = __qeth_l2_set_online(card->gdev, 1); 1280 if (rc) { 1281 rtnl_lock(); 1282 dev_close(card->dev); 1283 rtnl_unlock(); 1284 } 1285 } else 1286 rc = __qeth_l2_set_online(card->gdev, 0); 1287 out: 1288 qeth_set_allowed_threads(card, 0xffffffff, 0); 1289 if (card->dev) 1290 netif_device_attach(card->dev); 1291 if (rc) 1292 dev_warn(&card->gdev->dev, "The qeth device driver " 1293 "failed to recover an error on the device\n"); 1294 return rc; 1295 } 1296 1297 /* Returns zero if the command is successfully "consumed" */ 1298 static int qeth_l2_control_event(struct qeth_card *card, 1299 struct qeth_ipa_cmd *cmd) 1300 { 1301 switch (cmd->hdr.command) { 1302 case IPA_CMD_SETBRIDGEPORT_OSA: 1303 case IPA_CMD_SETBRIDGEPORT_IQD: 1304 if (cmd->data.sbp.hdr.command_code == 1305 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { 1306 qeth_bridge_state_change(card, cmd); 1307 return 0; 1308 } else 1309 return 1; 1310 case IPA_CMD_ADDRESS_CHANGE_NOTIF: 1311 qeth_bridge_host_event(card, cmd); 1312 return 0; 1313 default: 1314 return 1; 1315 } 1316 } 1317 1318 struct qeth_discipline qeth_l2_discipline = { 1319 .devtype = &qeth_l2_devtype, 1320 .start_poll = qeth_qdio_start_poll, 1321 .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, 1322 .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, 1323 .process_rx_buffer = qeth_l2_process_inbound_buffer, 1324 .recover = qeth_l2_recover, 1325 .setup = qeth_l2_probe_device, 1326 .remove = qeth_l2_remove_device, 1327 .set_online = qeth_l2_set_online, 1328 .set_offline = qeth_l2_set_offline, 1329 .freeze = qeth_l2_pm_suspend, 1330 .thaw = qeth_l2_pm_resume, 1331 .restore = qeth_l2_pm_resume, 1332 .do_ioctl = NULL, 1333 .control_event_handler = qeth_l2_control_event, 1334 }; 1335 EXPORT_SYMBOL_GPL(qeth_l2_discipline); 1336 1337 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1338 struct qeth_cmd_buffer *iob) 1339 { 1340 unsigned long flags; 1341 int rc = 0; 1342 1343 QETH_CARD_TEXT(card, 5, "osndctrd"); 1344 1345 wait_event(card->wait_q, 1346 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1347 qeth_prepare_control_data(card, len, iob); 1348 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1349 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1350 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1351 (addr_t) iob, 0, 0); 1352 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1353 if (rc) { 1354 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1355 "ccw_device_start rc = %i\n", rc); 1356 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1357 qeth_release_buffer(iob->channel, iob); 1358 atomic_set(&card->write.irq_pending, 0); 1359 wake_up(&card->wait_q); 1360 } 1361 return rc; 1362 } 1363 1364 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1365 struct qeth_cmd_buffer *iob, int data_len) 1366 { 1367 u16 s1, s2; 1368 1369 QETH_CARD_TEXT(card, 4, "osndipa"); 1370 1371 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1372 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1373 s2 = (u16)data_len; 1374 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1375 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1376 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1377 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1378 return qeth_osn_send_control_data(card, s1, iob); 1379 } 1380 1381 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1382 { 1383 struct qeth_cmd_buffer *iob; 1384 struct qeth_card *card; 1385 int rc; 1386 1387 if (!dev) 1388 return -ENODEV; 1389 card = dev->ml_priv; 1390 if (!card) 1391 return -ENODEV; 1392 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1393 if (!qeth_card_hw_is_reachable(card)) 1394 return -ENODEV; 1395 iob = qeth_wait_for_buffer(&card->write); 1396 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1397 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1398 return rc; 1399 } 1400 EXPORT_SYMBOL(qeth_osn_assist); 1401 1402 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1403 int (*assist_cb)(struct net_device *, void *), 1404 int (*data_cb)(struct sk_buff *)) 1405 { 1406 struct qeth_card *card; 1407 1408 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1409 if (*dev == NULL) 1410 return -ENODEV; 1411 card = (*dev)->ml_priv; 1412 if (!card) 1413 return -ENODEV; 1414 QETH_CARD_TEXT(card, 2, "osnreg"); 1415 if ((assist_cb == NULL) || (data_cb == NULL)) 1416 return -EINVAL; 1417 card->osn_info.assist_cb = assist_cb; 1418 card->osn_info.data_cb = data_cb; 1419 return 0; 1420 } 1421 EXPORT_SYMBOL(qeth_osn_register); 1422 1423 void qeth_osn_deregister(struct net_device *dev) 1424 { 1425 struct qeth_card *card; 1426 1427 if (!dev) 1428 return; 1429 card = dev->ml_priv; 1430 if (!card) 1431 return; 1432 QETH_CARD_TEXT(card, 2, "osndereg"); 1433 card->osn_info.assist_cb = NULL; 1434 card->osn_info.data_cb = NULL; 1435 return; 1436 } 1437 EXPORT_SYMBOL(qeth_osn_deregister); 1438 1439 /* SETBRIDGEPORT support, async notifications */ 1440 1441 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; 1442 1443 /** 1444 * qeth_bridge_emit_host_event() - bridgeport address change notification 1445 * @card: qeth_card structure pointer, for udev events. 1446 * @evtype: "normal" register/unregister, or abort, or reset. For abort 1447 * and reset token and addr_lnid are unused and may be NULL. 1448 * @code: event bitmask: high order bit 0x80 value 1 means removal of an 1449 * object, 0 - addition of an object. 1450 * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. 1451 * @token: "network token" structure identifying physical address of the port. 1452 * @addr_lnid: pointer to structure with MAC address and VLAN ID. 1453 * 1454 * This function is called when registrations and deregistrations are 1455 * reported by the hardware, and also when notifications are enabled - 1456 * for all currently registered addresses. 1457 */ 1458 static void qeth_bridge_emit_host_event(struct qeth_card *card, 1459 enum qeth_an_event_type evtype, 1460 u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) 1461 { 1462 char str[7][32]; 1463 char *env[8]; 1464 int i = 0; 1465 1466 switch (evtype) { 1467 case anev_reg_unreg: 1468 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", 1469 (code & IPA_ADDR_CHANGE_CODE_REMOVAL) 1470 ? "deregister" : "register"); 1471 env[i] = str[i]; i++; 1472 if (code & IPA_ADDR_CHANGE_CODE_VLANID) { 1473 snprintf(str[i], sizeof(str[i]), "VLAN=%d", 1474 addr_lnid->lnid); 1475 env[i] = str[i]; i++; 1476 } 1477 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { 1478 snprintf(str[i], sizeof(str[i]), "MAC=%pM", 1479 addr_lnid->mac); 1480 env[i] = str[i]; i++; 1481 } 1482 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", 1483 token->cssid, token->ssid, token->devnum); 1484 env[i] = str[i]; i++; 1485 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); 1486 env[i] = str[i]; i++; 1487 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", 1488 token->chpid); 1489 env[i] = str[i]; i++; 1490 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); 1491 env[i] = str[i]; i++; 1492 break; 1493 case anev_abort: 1494 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); 1495 env[i] = str[i]; i++; 1496 break; 1497 case anev_reset: 1498 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); 1499 env[i] = str[i]; i++; 1500 break; 1501 } 1502 env[i] = NULL; 1503 kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); 1504 } 1505 1506 struct qeth_bridge_state_data { 1507 struct work_struct worker; 1508 struct qeth_card *card; 1509 struct qeth_sbp_state_change qports; 1510 }; 1511 1512 static void qeth_bridge_state_change_worker(struct work_struct *work) 1513 { 1514 struct qeth_bridge_state_data *data = 1515 container_of(work, struct qeth_bridge_state_data, worker); 1516 /* We are only interested in the first entry - local port */ 1517 struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; 1518 char env_locrem[32]; 1519 char env_role[32]; 1520 char env_state[32]; 1521 char *env[] = { 1522 env_locrem, 1523 env_role, 1524 env_state, 1525 NULL 1526 }; 1527 1528 /* Role should not change by itself, but if it did, */ 1529 /* information from the hardware is authoritative. */ 1530 mutex_lock(&data->card->conf_mutex); 1531 data->card->options.sbp.role = entry->role; 1532 mutex_unlock(&data->card->conf_mutex); 1533 1534 snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); 1535 snprintf(env_role, sizeof(env_role), "ROLE=%s", 1536 (entry->role == QETH_SBP_ROLE_NONE) ? "none" : 1537 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : 1538 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : 1539 "<INVALID>"); 1540 snprintf(env_state, sizeof(env_state), "STATE=%s", 1541 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : 1542 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : 1543 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : 1544 "<INVALID>"); 1545 kobject_uevent_env(&data->card->gdev->dev.kobj, 1546 KOBJ_CHANGE, env); 1547 kfree(data); 1548 } 1549 1550 static void qeth_bridge_state_change(struct qeth_card *card, 1551 struct qeth_ipa_cmd *cmd) 1552 { 1553 struct qeth_sbp_state_change *qports = 1554 &cmd->data.sbp.data.state_change; 1555 struct qeth_bridge_state_data *data; 1556 int extrasize; 1557 1558 QETH_CARD_TEXT(card, 2, "brstchng"); 1559 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1560 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); 1561 return; 1562 } 1563 extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; 1564 data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, 1565 GFP_ATOMIC); 1566 if (!data) { 1567 QETH_CARD_TEXT(card, 2, "BPSalloc"); 1568 return; 1569 } 1570 INIT_WORK(&data->worker, qeth_bridge_state_change_worker); 1571 data->card = card; 1572 memcpy(&data->qports, qports, 1573 sizeof(struct qeth_sbp_state_change) + extrasize); 1574 queue_work(qeth_wq, &data->worker); 1575 } 1576 1577 struct qeth_bridge_host_data { 1578 struct work_struct worker; 1579 struct qeth_card *card; 1580 struct qeth_ipacmd_addr_change hostevs; 1581 }; 1582 1583 static void qeth_bridge_host_event_worker(struct work_struct *work) 1584 { 1585 struct qeth_bridge_host_data *data = 1586 container_of(work, struct qeth_bridge_host_data, worker); 1587 int i; 1588 1589 if (data->hostevs.lost_event_mask) { 1590 dev_info(&data->card->gdev->dev, 1591 "Address notification from the Bridge Port stopped %s (%s)\n", 1592 data->card->dev->name, 1593 (data->hostevs.lost_event_mask == 0x01) 1594 ? "Overflow" 1595 : (data->hostevs.lost_event_mask == 0x02) 1596 ? "Bridge port state change" 1597 : "Unknown reason"); 1598 mutex_lock(&data->card->conf_mutex); 1599 data->card->options.sbp.hostnotification = 0; 1600 mutex_unlock(&data->card->conf_mutex); 1601 qeth_bridge_emit_host_event(data->card, anev_abort, 1602 0, NULL, NULL); 1603 } else 1604 for (i = 0; i < data->hostevs.num_entries; i++) { 1605 struct qeth_ipacmd_addr_change_entry *entry = 1606 &data->hostevs.entry[i]; 1607 qeth_bridge_emit_host_event(data->card, 1608 anev_reg_unreg, 1609 entry->change_code, 1610 &entry->token, &entry->addr_lnid); 1611 } 1612 kfree(data); 1613 } 1614 1615 static void qeth_bridge_host_event(struct qeth_card *card, 1616 struct qeth_ipa_cmd *cmd) 1617 { 1618 struct qeth_ipacmd_addr_change *hostevs = 1619 &cmd->data.addrchange; 1620 struct qeth_bridge_host_data *data; 1621 int extrasize; 1622 1623 QETH_CARD_TEXT(card, 2, "brhostev"); 1624 if (cmd->hdr.return_code != 0x0000) { 1625 if (cmd->hdr.return_code == 0x0010) { 1626 if (hostevs->lost_event_mask == 0x00) 1627 hostevs->lost_event_mask = 0xff; 1628 } else { 1629 QETH_CARD_TEXT_(card, 2, "BPHe%04x", 1630 cmd->hdr.return_code); 1631 return; 1632 } 1633 } 1634 extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * 1635 hostevs->num_entries; 1636 data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, 1637 GFP_ATOMIC); 1638 if (!data) { 1639 QETH_CARD_TEXT(card, 2, "BPHalloc"); 1640 return; 1641 } 1642 INIT_WORK(&data->worker, qeth_bridge_host_event_worker); 1643 data->card = card; 1644 memcpy(&data->hostevs, hostevs, 1645 sizeof(struct qeth_ipacmd_addr_change) + extrasize); 1646 queue_work(qeth_wq, &data->worker); 1647 } 1648 1649 /* SETBRIDGEPORT support; sending commands */ 1650 1651 struct _qeth_sbp_cbctl { 1652 u16 ipa_rc; 1653 u16 cmd_rc; 1654 union { 1655 u32 supported; 1656 struct { 1657 enum qeth_sbp_roles *role; 1658 enum qeth_sbp_states *state; 1659 } qports; 1660 } data; 1661 }; 1662 1663 /** 1664 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes. 1665 * @card: qeth_card structure pointer, for debug messages. 1666 * @cbctl: state structure with hardware return codes. 1667 * @setcmd: IPA command code 1668 * 1669 * Returns negative errno-compatible error indication or 0 on success. 1670 */ 1671 static int qeth_bridgeport_makerc(struct qeth_card *card, 1672 struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd) 1673 { 1674 int rc; 1675 int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD); 1676 1677 if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) || 1678 (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc))) 1679 switch (cbctl->cmd_rc) { 1680 case IPA_RC_SUCCESS: 1681 rc = 0; 1682 break; 1683 case IPA_RC_L2_UNSUPPORTED_CMD: 1684 case IPA_RC_UNSUPPORTED_COMMAND: 1685 rc = -EOPNOTSUPP; 1686 break; 1687 case IPA_RC_SBP_OSA_NOT_CONFIGURED: 1688 case IPA_RC_SBP_IQD_NOT_CONFIGURED: 1689 rc = -ENODEV; /* maybe not the best code here? */ 1690 dev_err(&card->gdev->dev, 1691 "The device is not configured as a Bridge Port\n"); 1692 break; 1693 case IPA_RC_SBP_OSA_OS_MISMATCH: 1694 case IPA_RC_SBP_IQD_OS_MISMATCH: 1695 rc = -EPERM; 1696 dev_err(&card->gdev->dev, 1697 "A Bridge Port is already configured by a different operating system\n"); 1698 break; 1699 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: 1700 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: 1701 switch (setcmd) { 1702 case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: 1703 rc = -EEXIST; 1704 dev_err(&card->gdev->dev, 1705 "The LAN already has a primary Bridge Port\n"); 1706 break; 1707 case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: 1708 rc = -EBUSY; 1709 dev_err(&card->gdev->dev, 1710 "The device is already a primary Bridge Port\n"); 1711 break; 1712 default: 1713 rc = -EIO; 1714 } 1715 break; 1716 case IPA_RC_SBP_OSA_CURRENT_SECOND: 1717 case IPA_RC_SBP_IQD_CURRENT_SECOND: 1718 rc = -EBUSY; 1719 dev_err(&card->gdev->dev, 1720 "The device is already a secondary Bridge Port\n"); 1721 break; 1722 case IPA_RC_SBP_OSA_LIMIT_SECOND: 1723 case IPA_RC_SBP_IQD_LIMIT_SECOND: 1724 rc = -EEXIST; 1725 dev_err(&card->gdev->dev, 1726 "The LAN cannot have more secondary Bridge Ports\n"); 1727 break; 1728 case IPA_RC_SBP_OSA_CURRENT_PRIMARY: 1729 case IPA_RC_SBP_IQD_CURRENT_PRIMARY: 1730 rc = -EBUSY; 1731 dev_err(&card->gdev->dev, 1732 "The device is already a primary Bridge Port\n"); 1733 break; 1734 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: 1735 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: 1736 rc = -EACCES; 1737 dev_err(&card->gdev->dev, 1738 "The device is not authorized to be a Bridge Port\n"); 1739 break; 1740 default: 1741 rc = -EIO; 1742 } 1743 else 1744 switch (cbctl->ipa_rc) { 1745 case IPA_RC_NOTSUPP: 1746 rc = -EOPNOTSUPP; 1747 break; 1748 case IPA_RC_UNSUPPORTED_COMMAND: 1749 rc = -EOPNOTSUPP; 1750 break; 1751 default: 1752 rc = -EIO; 1753 } 1754 1755 if (rc) { 1756 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc); 1757 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc); 1758 } 1759 return rc; 1760 } 1761 1762 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, 1763 enum qeth_ipa_sbp_cmd sbp_cmd, 1764 unsigned int cmd_length) 1765 { 1766 enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ? 1767 IPA_CMD_SETBRIDGEPORT_IQD : 1768 IPA_CMD_SETBRIDGEPORT_OSA; 1769 struct qeth_cmd_buffer *iob; 1770 struct qeth_ipa_cmd *cmd; 1771 1772 iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0); 1773 if (!iob) 1774 return iob; 1775 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 1776 cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + 1777 cmd_length; 1778 cmd->data.sbp.hdr.command_code = sbp_cmd; 1779 cmd->data.sbp.hdr.used_total = 1; 1780 cmd->data.sbp.hdr.seq_no = 1; 1781 return iob; 1782 } 1783 1784 static int qeth_bridgeport_query_support_cb(struct qeth_card *card, 1785 struct qeth_reply *reply, unsigned long data) 1786 { 1787 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1788 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1789 QETH_CARD_TEXT(card, 2, "brqsupcb"); 1790 cbctl->ipa_rc = cmd->hdr.return_code; 1791 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1792 if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) { 1793 cbctl->data.supported = 1794 cmd->data.sbp.data.query_cmds_supp.supported_cmds; 1795 } else { 1796 cbctl->data.supported = 0; 1797 } 1798 return 0; 1799 } 1800 1801 /** 1802 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. 1803 * @card: qeth_card structure pointer. 1804 * 1805 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card 1806 * strucutre: card->options.sbp.supported_funcs. 1807 */ 1808 static void qeth_bridgeport_query_support(struct qeth_card *card) 1809 { 1810 struct qeth_cmd_buffer *iob; 1811 struct _qeth_sbp_cbctl cbctl; 1812 1813 QETH_CARD_TEXT(card, 2, "brqsuppo"); 1814 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, 1815 sizeof(struct qeth_sbp_query_cmds_supp)); 1816 if (!iob) 1817 return; 1818 if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, 1819 (void *)&cbctl) || 1820 qeth_bridgeport_makerc(card, &cbctl, 1821 IPA_SBP_QUERY_COMMANDS_SUPPORTED)) { 1822 /* non-zero makerc signifies failure, and produce messages */ 1823 card->options.sbp.role = QETH_SBP_ROLE_NONE; 1824 return; 1825 } 1826 card->options.sbp.supported_funcs = cbctl.data.supported; 1827 } 1828 1829 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, 1830 struct qeth_reply *reply, unsigned long data) 1831 { 1832 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; 1833 struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; 1834 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1835 1836 QETH_CARD_TEXT(card, 2, "brqprtcb"); 1837 cbctl->ipa_rc = cmd->hdr.return_code; 1838 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1839 if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0)) 1840 return 0; 1841 if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { 1842 cbctl->cmd_rc = 0xffff; 1843 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); 1844 return 0; 1845 } 1846 /* first entry contains the state of the local port */ 1847 if (qports->num_entries > 0) { 1848 if (cbctl->data.qports.role) 1849 *cbctl->data.qports.role = qports->entry[0].role; 1850 if (cbctl->data.qports.state) 1851 *cbctl->data.qports.state = qports->entry[0].state; 1852 } 1853 return 0; 1854 } 1855 1856 /** 1857 * qeth_bridgeport_query_ports() - query local bridgeport status. 1858 * @card: qeth_card structure pointer. 1859 * @role: Role of the port: 0-none, 1-primary, 2-secondary. 1860 * @state: State of the port: 0-inactive, 1-standby, 2-active. 1861 * 1862 * Returns negative errno-compatible error indication or 0 on success. 1863 * 1864 * 'role' and 'state' are not updated in case of hardware operation failure. 1865 */ 1866 int qeth_bridgeport_query_ports(struct qeth_card *card, 1867 enum qeth_sbp_roles *role, enum qeth_sbp_states *state) 1868 { 1869 int rc = 0; 1870 struct qeth_cmd_buffer *iob; 1871 struct _qeth_sbp_cbctl cbctl = { 1872 .data = { 1873 .qports = { 1874 .role = role, 1875 .state = state, 1876 }, 1877 }, 1878 }; 1879 1880 QETH_CARD_TEXT(card, 2, "brqports"); 1881 if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) 1882 return -EOPNOTSUPP; 1883 iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); 1884 if (!iob) 1885 return -ENOMEM; 1886 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, 1887 (void *)&cbctl); 1888 if (rc < 0) 1889 return rc; 1890 return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS); 1891 } 1892 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports); 1893 1894 static int qeth_bridgeport_set_cb(struct qeth_card *card, 1895 struct qeth_reply *reply, unsigned long data) 1896 { 1897 struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; 1898 struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; 1899 QETH_CARD_TEXT(card, 2, "brsetrcb"); 1900 cbctl->ipa_rc = cmd->hdr.return_code; 1901 cbctl->cmd_rc = cmd->data.sbp.hdr.return_code; 1902 return 0; 1903 } 1904 1905 /** 1906 * qeth_bridgeport_setrole() - Assign primary role to the port. 1907 * @card: qeth_card structure pointer. 1908 * @role: Role to assign. 1909 * 1910 * Returns negative errno-compatible error indication or 0 on success. 1911 */ 1912 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) 1913 { 1914 int rc = 0; 1915 int cmdlength; 1916 struct qeth_cmd_buffer *iob; 1917 struct _qeth_sbp_cbctl cbctl; 1918 enum qeth_ipa_sbp_cmd setcmd; 1919 1920 QETH_CARD_TEXT(card, 2, "brsetrol"); 1921 switch (role) { 1922 case QETH_SBP_ROLE_NONE: 1923 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; 1924 cmdlength = sizeof(struct qeth_sbp_reset_role); 1925 break; 1926 case QETH_SBP_ROLE_PRIMARY: 1927 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; 1928 cmdlength = sizeof(struct qeth_sbp_set_primary); 1929 break; 1930 case QETH_SBP_ROLE_SECONDARY: 1931 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 1932 cmdlength = sizeof(struct qeth_sbp_set_secondary); 1933 break; 1934 default: 1935 return -EINVAL; 1936 } 1937 if (!(card->options.sbp.supported_funcs & setcmd)) 1938 return -EOPNOTSUPP; 1939 iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); 1940 if (!iob) 1941 return -ENOMEM; 1942 rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, 1943 (void *)&cbctl); 1944 if (rc < 0) 1945 return rc; 1946 return qeth_bridgeport_makerc(card, &cbctl, setcmd); 1947 } 1948 1949 /** 1950 * qeth_anset_makerc() - derive "traditional" error from hardware codes. 1951 * @card: qeth_card structure pointer, for debug messages. 1952 * 1953 * Returns negative errno-compatible error indication or 0 on success. 1954 */ 1955 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) 1956 { 1957 int rc; 1958 1959 if (pnso_rc == 0) 1960 switch (response) { 1961 case 0x0001: 1962 rc = 0; 1963 break; 1964 case 0x0004: 1965 case 0x0100: 1966 case 0x0106: 1967 rc = -EOPNOTSUPP; 1968 dev_err(&card->gdev->dev, 1969 "Setting address notification failed\n"); 1970 break; 1971 case 0x0107: 1972 rc = -EAGAIN; 1973 break; 1974 default: 1975 rc = -EIO; 1976 } 1977 else 1978 rc = -EIO; 1979 1980 if (rc) { 1981 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); 1982 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); 1983 } 1984 return rc; 1985 } 1986 1987 static void qeth_bridgeport_an_set_cb(void *priv, 1988 enum qdio_brinfo_entry_type type, void *entry) 1989 { 1990 struct qeth_card *card = (struct qeth_card *)priv; 1991 struct qdio_brinfo_entry_l2 *l2entry; 1992 u8 code; 1993 1994 if (type != l2_addr_lnid) { 1995 WARN_ON_ONCE(1); 1996 return; 1997 } 1998 1999 l2entry = (struct qdio_brinfo_entry_l2 *)entry; 2000 code = IPA_ADDR_CHANGE_CODE_MACADDR; 2001 if (l2entry->addr_lnid.lnid) 2002 code |= IPA_ADDR_CHANGE_CODE_VLANID; 2003 qeth_bridge_emit_host_event(card, anev_reg_unreg, code, 2004 (struct net_if_token *)&l2entry->nit, 2005 (struct mac_addr_lnid *)&l2entry->addr_lnid); 2006 } 2007 2008 /** 2009 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification 2010 * @card: qeth_card structure pointer. 2011 * @enable: 0 - disable, non-zero - enable notifications 2012 * 2013 * Returns negative errno-compatible error indication or 0 on success. 2014 * 2015 * On enable, emits a series of address notifications udev events for all 2016 * currently registered hosts. 2017 */ 2018 int qeth_bridgeport_an_set(struct qeth_card *card, int enable) 2019 { 2020 int rc; 2021 u16 response; 2022 struct ccw_device *ddev; 2023 struct subchannel_id schid; 2024 2025 if (!card) 2026 return -EINVAL; 2027 if (!card->options.sbp.supported_funcs) 2028 return -EOPNOTSUPP; 2029 ddev = CARD_DDEV(card); 2030 ccw_device_get_schid(ddev, &schid); 2031 2032 if (enable) { 2033 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); 2034 rc = qdio_pnso_brinfo(schid, 1, &response, 2035 qeth_bridgeport_an_set_cb, card); 2036 } else 2037 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); 2038 return qeth_anset_makerc(card, rc, response); 2039 } 2040 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); 2041 2042 module_init(qeth_l2_init); 2043 module_exit(qeth_l2_exit); 2044 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 2045 MODULE_DESCRIPTION("qeth layer 2 discipline"); 2046 MODULE_LICENSE("GPL"); 2047