1 /* 2 * drivers/s390/net/qeth_l2_main.c 3 * 4 * Copyright IBM Corp. 2007, 2009 5 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 6 * Frank Pavlic <fpavlic@de.ibm.com>, 7 * Thomas Spatzier <tspat@de.ibm.com>, 8 * Frank Blaschka <frank.blaschka@de.ibm.com> 9 */ 10 11 #define KMSG_COMPONENT "qeth" 12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt 13 14 #include <linux/module.h> 15 #include <linux/moduleparam.h> 16 #include <linux/string.h> 17 #include <linux/errno.h> 18 #include <linux/kernel.h> 19 #include <linux/slab.h> 20 #include <linux/etherdevice.h> 21 #include <linux/mii.h> 22 #include <linux/ip.h> 23 #include <linux/list.h> 24 25 #include "qeth_core.h" 26 27 static int qeth_l2_set_offline(struct ccwgroup_device *); 28 static int qeth_l2_stop(struct net_device *); 29 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *); 30 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *, 31 enum qeth_ipa_cmds, 32 int (*reply_cb) (struct qeth_card *, 33 struct qeth_reply*, 34 unsigned long)); 35 static void qeth_l2_set_multicast_list(struct net_device *); 36 static int qeth_l2_recover(void *); 37 38 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 39 { 40 struct qeth_card *card = dev->ml_priv; 41 struct mii_ioctl_data *mii_data; 42 int rc = 0; 43 44 if (!card) 45 return -ENODEV; 46 47 if ((card->state != CARD_STATE_UP) && 48 (card->state != CARD_STATE_SOFTSETUP)) 49 return -ENODEV; 50 51 if (card->info.type == QETH_CARD_TYPE_OSN) 52 return -EPERM; 53 54 switch (cmd) { 55 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 56 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 57 break; 58 case SIOC_QETH_GET_CARD_TYPE: 59 if ((card->info.type == QETH_CARD_TYPE_OSD || 60 card->info.type == QETH_CARD_TYPE_OSM || 61 card->info.type == QETH_CARD_TYPE_OSX) && 62 !card->info.guestlan) 63 return 1; 64 return 0; 65 break; 66 case SIOCGMIIPHY: 67 mii_data = if_mii(rq); 68 mii_data->phy_id = 0; 69 break; 70 case SIOCGMIIREG: 71 mii_data = if_mii(rq); 72 if (mii_data->phy_id != 0) 73 rc = -EINVAL; 74 else 75 mii_data->val_out = qeth_mdio_read(dev, 76 mii_data->phy_id, mii_data->reg_num); 77 break; 78 default: 79 rc = -EOPNOTSUPP; 80 } 81 if (rc) 82 QETH_CARD_TEXT_(card, 2, "ioce%d", rc); 83 return rc; 84 } 85 86 static int qeth_l2_verify_dev(struct net_device *dev) 87 { 88 struct qeth_card *card; 89 unsigned long flags; 90 int rc = 0; 91 92 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 93 list_for_each_entry(card, &qeth_core_card_list.list, list) { 94 if (card->dev == dev) { 95 rc = QETH_REAL_CARD; 96 break; 97 } 98 } 99 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 100 101 return rc; 102 } 103 104 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 105 { 106 struct qeth_card *card; 107 struct net_device *ndev; 108 __u16 temp_dev_no; 109 unsigned long flags; 110 struct ccw_dev_id read_devid; 111 112 ndev = NULL; 113 memcpy(&temp_dev_no, read_dev_no, 2); 114 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 115 list_for_each_entry(card, &qeth_core_card_list.list, list) { 116 ccw_device_get_id(CARD_RDEV(card), &read_devid); 117 if (read_devid.devno == temp_dev_no) { 118 ndev = card->dev; 119 break; 120 } 121 } 122 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 123 return ndev; 124 } 125 126 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card, 127 struct qeth_reply *reply, 128 unsigned long data) 129 { 130 struct qeth_ipa_cmd *cmd; 131 __u8 *mac; 132 133 QETH_CARD_TEXT(card, 2, "L2Sgmacb"); 134 cmd = (struct qeth_ipa_cmd *) data; 135 mac = &cmd->data.setdelmac.mac[0]; 136 /* MAC already registered, needed in couple/uncouple case */ 137 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) { 138 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n", 139 mac, QETH_CARD_IFNAME(card)); 140 cmd->hdr.return_code = 0; 141 } 142 if (cmd->hdr.return_code) 143 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n", 144 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code); 145 return 0; 146 } 147 148 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) 149 { 150 QETH_CARD_TEXT(card, 2, "L2Sgmac"); 151 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC, 152 qeth_l2_send_setgroupmac_cb); 153 } 154 155 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card, 156 struct qeth_reply *reply, 157 unsigned long data) 158 { 159 struct qeth_ipa_cmd *cmd; 160 __u8 *mac; 161 162 QETH_CARD_TEXT(card, 2, "L2Dgmacb"); 163 cmd = (struct qeth_ipa_cmd *) data; 164 mac = &cmd->data.setdelmac.mac[0]; 165 if (cmd->hdr.return_code) 166 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n", 167 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code); 168 return 0; 169 } 170 171 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) 172 { 173 QETH_CARD_TEXT(card, 2, "L2Dgmac"); 174 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC, 175 qeth_l2_send_delgroupmac_cb); 176 } 177 178 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac) 179 { 180 struct qeth_mc_mac *mc; 181 int rc; 182 183 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC); 184 185 if (!mc) 186 return; 187 188 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN); 189 mc->mc_addrlen = OSA_ADDR_LEN; 190 mc->is_vmac = vmac; 191 192 if (vmac) { 193 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC, 194 NULL); 195 } else { 196 rc = qeth_l2_send_setgroupmac(card, mac); 197 } 198 199 if (!rc) 200 list_add_tail(&mc->list, &card->mc_list); 201 else 202 kfree(mc); 203 } 204 205 static void qeth_l2_del_all_mc(struct qeth_card *card, int del) 206 { 207 struct qeth_mc_mac *mc, *tmp; 208 209 spin_lock_bh(&card->mclock); 210 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) { 211 if (del) { 212 if (mc->is_vmac) 213 qeth_l2_send_setdelmac(card, mc->mc_addr, 214 IPA_CMD_DELVMAC, NULL); 215 else 216 qeth_l2_send_delgroupmac(card, mc->mc_addr); 217 } 218 list_del(&mc->list); 219 kfree(mc); 220 } 221 spin_unlock_bh(&card->mclock); 222 } 223 224 static inline int qeth_l2_get_cast_type(struct qeth_card *card, 225 struct sk_buff *skb) 226 { 227 if (card->info.type == QETH_CARD_TYPE_OSN) 228 return RTN_UNSPEC; 229 if (is_broadcast_ether_addr(skb->data)) 230 return RTN_BROADCAST; 231 if (is_multicast_ether_addr(skb->data)) 232 return RTN_MULTICAST; 233 return RTN_UNSPEC; 234 } 235 236 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 237 struct sk_buff *skb, int ipv, int cast_type) 238 { 239 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 240 241 memset(hdr, 0, sizeof(struct qeth_hdr)); 242 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 243 244 /* set byte byte 3 to casting flags */ 245 if (cast_type == RTN_MULTICAST) 246 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 247 else if (cast_type == RTN_BROADCAST) 248 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 249 else 250 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 251 252 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE; 253 /* VSWITCH relies on the VLAN 254 * information to be present in 255 * the QDIO header */ 256 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 257 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 258 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 259 } 260 } 261 262 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 263 struct qeth_reply *reply, unsigned long data) 264 { 265 struct qeth_ipa_cmd *cmd; 266 267 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 268 cmd = (struct qeth_ipa_cmd *) data; 269 if (cmd->hdr.return_code) { 270 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. " 271 "Continuing\n", cmd->data.setdelvlan.vlan_id, 272 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 273 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 274 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 275 } 276 return 0; 277 } 278 279 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 280 enum qeth_ipa_cmds ipacmd) 281 { 282 struct qeth_ipa_cmd *cmd; 283 struct qeth_cmd_buffer *iob; 284 285 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 286 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 287 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 288 cmd->data.setdelvlan.vlan_id = i; 289 return qeth_send_ipa_cmd(card, iob, 290 qeth_l2_send_setdelvlan_cb, NULL); 291 } 292 293 static void qeth_l2_process_vlans(struct qeth_card *card) 294 { 295 struct qeth_vlan_vid *id; 296 QETH_CARD_TEXT(card, 3, "L2prcvln"); 297 spin_lock_bh(&card->vlanlock); 298 list_for_each_entry(id, &card->vid_list, list) { 299 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 300 } 301 spin_unlock_bh(&card->vlanlock); 302 } 303 304 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) 305 { 306 struct qeth_card *card = dev->ml_priv; 307 struct qeth_vlan_vid *id; 308 309 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 310 if (!vid) 311 return 0; 312 if (card->info.type == QETH_CARD_TYPE_OSM) { 313 QETH_CARD_TEXT(card, 3, "aidOSM"); 314 return 0; 315 } 316 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 317 QETH_CARD_TEXT(card, 3, "aidREC"); 318 return 0; 319 } 320 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 321 if (id) { 322 id->vid = vid; 323 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 324 spin_lock_bh(&card->vlanlock); 325 list_add_tail(&id->list, &card->vid_list); 326 spin_unlock_bh(&card->vlanlock); 327 } else { 328 return -ENOMEM; 329 } 330 return 0; 331 } 332 333 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) 334 { 335 struct qeth_vlan_vid *id, *tmpid = NULL; 336 struct qeth_card *card = dev->ml_priv; 337 338 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 339 if (card->info.type == QETH_CARD_TYPE_OSM) { 340 QETH_CARD_TEXT(card, 3, "kidOSM"); 341 return 0; 342 } 343 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 344 QETH_CARD_TEXT(card, 3, "kidREC"); 345 return 0; 346 } 347 spin_lock_bh(&card->vlanlock); 348 list_for_each_entry(id, &card->vid_list, list) { 349 if (id->vid == vid) { 350 list_del(&id->list); 351 tmpid = id; 352 break; 353 } 354 } 355 spin_unlock_bh(&card->vlanlock); 356 if (tmpid) { 357 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 358 kfree(tmpid); 359 } 360 qeth_l2_set_multicast_list(card->dev); 361 return 0; 362 } 363 364 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 365 { 366 int rc = 0; 367 368 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 369 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 370 371 qeth_set_allowed_threads(card, 0, 1); 372 if (card->read.state == CH_STATE_UP && 373 card->write.state == CH_STATE_UP && 374 (card->state == CARD_STATE_UP)) { 375 if (recovery_mode && 376 card->info.type != QETH_CARD_TYPE_OSN) { 377 qeth_l2_stop(card->dev); 378 } else { 379 rtnl_lock(); 380 dev_close(card->dev); 381 rtnl_unlock(); 382 } 383 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 384 card->state = CARD_STATE_SOFTSETUP; 385 } 386 if (card->state == CARD_STATE_SOFTSETUP) { 387 qeth_l2_del_all_mc(card, 0); 388 qeth_clear_ipacmd_list(card); 389 card->state = CARD_STATE_HARDSETUP; 390 } 391 if (card->state == CARD_STATE_HARDSETUP) { 392 qeth_qdio_clear_card(card, 0); 393 qeth_clear_qdio_buffers(card); 394 qeth_clear_working_pool_list(card); 395 card->state = CARD_STATE_DOWN; 396 } 397 if (card->state == CARD_STATE_DOWN) { 398 qeth_clear_cmd_buffers(&card->read); 399 qeth_clear_cmd_buffers(&card->write); 400 } 401 return rc; 402 } 403 404 static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 405 int budget, int *done) 406 { 407 int work_done = 0; 408 struct sk_buff *skb; 409 struct qeth_hdr *hdr; 410 unsigned int len; 411 412 *done = 0; 413 BUG_ON(!budget); 414 while (budget) { 415 skb = qeth_core_get_next_skb(card, 416 &card->qdio.in_q->bufs[card->rx.b_index], 417 &card->rx.b_element, &card->rx.e_offset, &hdr); 418 if (!skb) { 419 *done = 1; 420 break; 421 } 422 skb->dev = card->dev; 423 switch (hdr->hdr.l2.id) { 424 case QETH_HEADER_TYPE_LAYER2: 425 skb->pkt_type = PACKET_HOST; 426 skb->protocol = eth_type_trans(skb, skb->dev); 427 skb->ip_summed = CHECKSUM_NONE; 428 if (skb->protocol == htons(ETH_P_802_2)) 429 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 430 len = skb->len; 431 netif_receive_skb(skb); 432 break; 433 case QETH_HEADER_TYPE_OSN: 434 if (card->info.type == QETH_CARD_TYPE_OSN) { 435 skb_push(skb, sizeof(struct qeth_hdr)); 436 skb_copy_to_linear_data(skb, hdr, 437 sizeof(struct qeth_hdr)); 438 len = skb->len; 439 card->osn_info.data_cb(skb); 440 break; 441 } 442 /* else unknown */ 443 default: 444 dev_kfree_skb_any(skb); 445 QETH_CARD_TEXT(card, 3, "inbunkno"); 446 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 447 continue; 448 } 449 work_done++; 450 budget--; 451 card->stats.rx_packets++; 452 card->stats.rx_bytes += len; 453 } 454 return work_done; 455 } 456 457 static int qeth_l2_poll(struct napi_struct *napi, int budget) 458 { 459 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 460 int work_done = 0; 461 struct qeth_qdio_buffer *buffer; 462 int done; 463 int new_budget = budget; 464 465 if (card->options.performance_stats) { 466 card->perf_stats.inbound_cnt++; 467 card->perf_stats.inbound_start_time = qeth_get_micros(); 468 } 469 470 while (1) { 471 if (!card->rx.b_count) { 472 card->rx.qdio_err = 0; 473 card->rx.b_count = qdio_get_next_buffers( 474 card->data.ccwdev, 0, &card->rx.b_index, 475 &card->rx.qdio_err); 476 if (card->rx.b_count <= 0) { 477 card->rx.b_count = 0; 478 break; 479 } 480 card->rx.b_element = 481 &card->qdio.in_q->bufs[card->rx.b_index] 482 .buffer->element[0]; 483 card->rx.e_offset = 0; 484 } 485 486 while (card->rx.b_count) { 487 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 488 if (!(card->rx.qdio_err && 489 qeth_check_qdio_errors(card, buffer->buffer, 490 card->rx.qdio_err, "qinerr"))) 491 work_done += qeth_l2_process_inbound_buffer( 492 card, new_budget, &done); 493 else 494 done = 1; 495 496 if (done) { 497 if (card->options.performance_stats) 498 card->perf_stats.bufs_rec++; 499 qeth_put_buffer_pool_entry(card, 500 buffer->pool_entry); 501 qeth_queue_input_buffer(card, card->rx.b_index); 502 card->rx.b_count--; 503 if (card->rx.b_count) { 504 card->rx.b_index = 505 (card->rx.b_index + 1) % 506 QDIO_MAX_BUFFERS_PER_Q; 507 card->rx.b_element = 508 &card->qdio.in_q 509 ->bufs[card->rx.b_index] 510 .buffer->element[0]; 511 card->rx.e_offset = 0; 512 } 513 } 514 515 if (work_done >= budget) 516 goto out; 517 else 518 new_budget = budget - work_done; 519 } 520 } 521 522 napi_complete(napi); 523 if (qdio_start_irq(card->data.ccwdev, 0)) 524 napi_schedule(&card->napi); 525 out: 526 if (card->options.performance_stats) 527 card->perf_stats.inbound_time += qeth_get_micros() - 528 card->perf_stats.inbound_start_time; 529 return work_done; 530 } 531 532 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 533 enum qeth_ipa_cmds ipacmd, 534 int (*reply_cb) (struct qeth_card *, 535 struct qeth_reply*, 536 unsigned long)) 537 { 538 struct qeth_ipa_cmd *cmd; 539 struct qeth_cmd_buffer *iob; 540 541 QETH_CARD_TEXT(card, 2, "L2sdmac"); 542 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 543 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 544 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 545 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 546 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL); 547 } 548 549 static int qeth_l2_send_setmac_cb(struct qeth_card *card, 550 struct qeth_reply *reply, 551 unsigned long data) 552 { 553 struct qeth_ipa_cmd *cmd; 554 555 QETH_CARD_TEXT(card, 2, "L2Smaccb"); 556 cmd = (struct qeth_ipa_cmd *) data; 557 if (cmd->hdr.return_code) { 558 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code); 559 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 560 switch (cmd->hdr.return_code) { 561 case IPA_RC_L2_DUP_MAC: 562 case IPA_RC_L2_DUP_LAYER3_MAC: 563 dev_warn(&card->gdev->dev, 564 "MAC address %pM already exists\n", 565 cmd->data.setdelmac.mac); 566 break; 567 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 568 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 569 dev_warn(&card->gdev->dev, 570 "MAC address %pM is not authorized\n", 571 cmd->data.setdelmac.mac); 572 break; 573 default: 574 break; 575 } 576 cmd->hdr.return_code = -EIO; 577 } else { 578 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 579 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac, 580 OSA_ADDR_LEN); 581 dev_info(&card->gdev->dev, 582 "MAC address %pM successfully registered on device %s\n", 583 card->dev->dev_addr, card->dev->name); 584 } 585 return 0; 586 } 587 588 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 589 { 590 QETH_CARD_TEXT(card, 2, "L2Setmac"); 591 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC, 592 qeth_l2_send_setmac_cb); 593 } 594 595 static int qeth_l2_send_delmac_cb(struct qeth_card *card, 596 struct qeth_reply *reply, 597 unsigned long data) 598 { 599 struct qeth_ipa_cmd *cmd; 600 601 QETH_CARD_TEXT(card, 2, "L2Dmaccb"); 602 cmd = (struct qeth_ipa_cmd *) data; 603 if (cmd->hdr.return_code) { 604 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 605 cmd->hdr.return_code = -EIO; 606 return 0; 607 } 608 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 609 610 return 0; 611 } 612 613 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 614 { 615 QETH_CARD_TEXT(card, 2, "L2Delmac"); 616 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 617 return 0; 618 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC, 619 qeth_l2_send_delmac_cb); 620 } 621 622 static int qeth_l2_request_initial_mac(struct qeth_card *card) 623 { 624 int rc = 0; 625 char vendor_pre[] = {0x02, 0x00, 0x00}; 626 627 QETH_DBF_TEXT(SETUP, 2, "doL2init"); 628 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 629 630 rc = qeth_query_setadapterparms(card); 631 if (rc) { 632 QETH_DBF_MESSAGE(2, "could not query adapter parameters on " 633 "device %s: x%x\n", CARD_BUS_ID(card), rc); 634 } 635 636 if (card->info.type == QETH_CARD_TYPE_IQD || 637 card->info.type == QETH_CARD_TYPE_OSM || 638 card->info.type == QETH_CARD_TYPE_OSX || 639 card->info.guestlan) { 640 rc = qeth_setadpparms_change_macaddr(card); 641 if (rc) { 642 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 643 "device %s: x%x\n", CARD_BUS_ID(card), rc); 644 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 645 return rc; 646 } 647 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN); 648 } else { 649 random_ether_addr(card->dev->dev_addr); 650 memcpy(card->dev->dev_addr, vendor_pre, 3); 651 } 652 return 0; 653 } 654 655 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 656 { 657 struct sockaddr *addr = p; 658 struct qeth_card *card = dev->ml_priv; 659 int rc = 0; 660 661 QETH_CARD_TEXT(card, 3, "setmac"); 662 663 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { 664 QETH_CARD_TEXT(card, 3, "setmcINV"); 665 return -EOPNOTSUPP; 666 } 667 668 if (card->info.type == QETH_CARD_TYPE_OSN || 669 card->info.type == QETH_CARD_TYPE_OSM || 670 card->info.type == QETH_CARD_TYPE_OSX) { 671 QETH_CARD_TEXT(card, 3, "setmcTYP"); 672 return -EOPNOTSUPP; 673 } 674 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN); 675 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 676 QETH_CARD_TEXT(card, 3, "setmcREC"); 677 return -ERESTARTSYS; 678 } 679 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 680 if (!rc) 681 rc = qeth_l2_send_setmac(card, addr->sa_data); 682 return rc; 683 } 684 685 static void qeth_l2_set_multicast_list(struct net_device *dev) 686 { 687 struct qeth_card *card = dev->ml_priv; 688 struct netdev_hw_addr *ha; 689 690 if (card->info.type == QETH_CARD_TYPE_OSN) 691 return ; 692 693 QETH_CARD_TEXT(card, 3, "setmulti"); 694 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 695 (card->state != CARD_STATE_UP)) 696 return; 697 qeth_l2_del_all_mc(card, 1); 698 spin_lock_bh(&card->mclock); 699 netdev_for_each_mc_addr(ha, dev) 700 qeth_l2_add_mc(card, ha->addr, 0); 701 702 netdev_for_each_uc_addr(ha, dev) 703 qeth_l2_add_mc(card, ha->addr, 1); 704 705 spin_unlock_bh(&card->mclock); 706 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 707 return; 708 qeth_setadp_promisc_mode(card); 709 } 710 711 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 712 { 713 int rc; 714 struct qeth_hdr *hdr = NULL; 715 int elements = 0; 716 struct qeth_card *card = dev->ml_priv; 717 struct sk_buff *new_skb = skb; 718 int ipv = qeth_get_ip_version(skb); 719 int cast_type = qeth_l2_get_cast_type(card, skb); 720 struct qeth_qdio_out_q *queue = card->qdio.out_qs 721 [qeth_get_priority_queue(card, skb, ipv, cast_type)]; 722 int tx_bytes = skb->len; 723 int data_offset = -1; 724 int elements_needed = 0; 725 int hd_len = 0; 726 727 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 728 card->stats.tx_carrier_errors++; 729 goto tx_drop; 730 } 731 732 if ((card->info.type == QETH_CARD_TYPE_OSN) && 733 (skb->protocol == htons(ETH_P_IPV6))) 734 goto tx_drop; 735 736 if (card->options.performance_stats) { 737 card->perf_stats.outbound_cnt++; 738 card->perf_stats.outbound_start_time = qeth_get_micros(); 739 } 740 netif_stop_queue(dev); 741 742 if (card->info.type == QETH_CARD_TYPE_OSN) 743 hdr = (struct qeth_hdr *)skb->data; 744 else { 745 if (card->info.type == QETH_CARD_TYPE_IQD) { 746 new_skb = skb; 747 data_offset = ETH_HLEN; 748 hd_len = ETH_HLEN; 749 hdr = kmem_cache_alloc(qeth_core_header_cache, 750 GFP_ATOMIC); 751 if (!hdr) 752 goto tx_drop; 753 elements_needed++; 754 skb_reset_mac_header(new_skb); 755 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type); 756 hdr->hdr.l2.pkt_length = new_skb->len; 757 memcpy(((char *)hdr) + sizeof(struct qeth_hdr), 758 skb_mac_header(new_skb), ETH_HLEN); 759 } else { 760 /* create a clone with writeable headroom */ 761 new_skb = skb_realloc_headroom(skb, 762 sizeof(struct qeth_hdr)); 763 if (!new_skb) 764 goto tx_drop; 765 hdr = (struct qeth_hdr *)skb_push(new_skb, 766 sizeof(struct qeth_hdr)); 767 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr)); 768 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type); 769 } 770 } 771 772 elements = qeth_get_elements_no(card, (void *)hdr, new_skb, 773 elements_needed); 774 if (!elements) { 775 if (data_offset >= 0) 776 kmem_cache_free(qeth_core_header_cache, hdr); 777 goto tx_drop; 778 } 779 780 if (card->info.type != QETH_CARD_TYPE_IQD) { 781 if (qeth_hdr_chk_and_bounce(new_skb, 782 sizeof(struct qeth_hdr_layer2))) 783 goto tx_drop; 784 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 785 elements); 786 } else 787 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 788 elements, data_offset, hd_len); 789 if (!rc) { 790 card->stats.tx_packets++; 791 card->stats.tx_bytes += tx_bytes; 792 if (new_skb != skb) 793 dev_kfree_skb_any(skb); 794 rc = NETDEV_TX_OK; 795 } else { 796 if (data_offset >= 0) 797 kmem_cache_free(qeth_core_header_cache, hdr); 798 799 if (rc == -EBUSY) { 800 if (new_skb != skb) 801 dev_kfree_skb_any(new_skb); 802 return NETDEV_TX_BUSY; 803 } else 804 goto tx_drop; 805 } 806 807 netif_wake_queue(dev); 808 if (card->options.performance_stats) 809 card->perf_stats.outbound_time += qeth_get_micros() - 810 card->perf_stats.outbound_start_time; 811 return rc; 812 813 tx_drop: 814 card->stats.tx_dropped++; 815 card->stats.tx_errors++; 816 if ((new_skb != skb) && new_skb) 817 dev_kfree_skb_any(new_skb); 818 dev_kfree_skb_any(skb); 819 netif_wake_queue(dev); 820 return NETDEV_TX_OK; 821 } 822 823 static int __qeth_l2_open(struct net_device *dev) 824 { 825 struct qeth_card *card = dev->ml_priv; 826 int rc = 0; 827 828 QETH_CARD_TEXT(card, 4, "qethopen"); 829 if (card->state == CARD_STATE_UP) 830 return rc; 831 if (card->state != CARD_STATE_SOFTSETUP) 832 return -ENODEV; 833 834 if ((card->info.type != QETH_CARD_TYPE_OSN) && 835 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 836 QETH_CARD_TEXT(card, 4, "nomacadr"); 837 return -EPERM; 838 } 839 card->data.state = CH_STATE_UP; 840 card->state = CARD_STATE_UP; 841 netif_start_queue(dev); 842 843 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 844 napi_enable(&card->napi); 845 napi_schedule(&card->napi); 846 } else 847 rc = -EIO; 848 return rc; 849 } 850 851 static int qeth_l2_open(struct net_device *dev) 852 { 853 struct qeth_card *card = dev->ml_priv; 854 855 QETH_CARD_TEXT(card, 5, "qethope_"); 856 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 857 QETH_CARD_TEXT(card, 3, "openREC"); 858 return -ERESTARTSYS; 859 } 860 return __qeth_l2_open(dev); 861 } 862 863 static int qeth_l2_stop(struct net_device *dev) 864 { 865 struct qeth_card *card = dev->ml_priv; 866 867 QETH_CARD_TEXT(card, 4, "qethstop"); 868 netif_tx_disable(dev); 869 if (card->state == CARD_STATE_UP) { 870 card->state = CARD_STATE_SOFTSETUP; 871 napi_disable(&card->napi); 872 } 873 return 0; 874 } 875 876 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 877 { 878 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 879 880 INIT_LIST_HEAD(&card->vid_list); 881 INIT_LIST_HEAD(&card->mc_list); 882 card->options.layer2 = 1; 883 card->info.hwtrap = 0; 884 card->discipline.start_poll = qeth_qdio_start_poll; 885 card->discipline.input_handler = (qdio_handler_t *) 886 qeth_qdio_input_handler; 887 card->discipline.output_handler = (qdio_handler_t *) 888 qeth_qdio_output_handler; 889 card->discipline.recover = qeth_l2_recover; 890 return 0; 891 } 892 893 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 894 { 895 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 896 897 qeth_set_allowed_threads(card, 0, 1); 898 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 899 900 if (cgdev->state == CCWGROUP_ONLINE) 901 qeth_l2_set_offline(cgdev); 902 903 if (card->dev) { 904 unregister_netdev(card->dev); 905 card->dev = NULL; 906 } 907 return; 908 } 909 910 static const struct ethtool_ops qeth_l2_ethtool_ops = { 911 .get_link = ethtool_op_get_link, 912 .get_strings = qeth_core_get_strings, 913 .get_ethtool_stats = qeth_core_get_ethtool_stats, 914 .get_sset_count = qeth_core_get_sset_count, 915 .get_drvinfo = qeth_core_get_drvinfo, 916 .get_settings = qeth_core_ethtool_get_settings, 917 }; 918 919 static const struct ethtool_ops qeth_l2_osn_ops = { 920 .get_strings = qeth_core_get_strings, 921 .get_ethtool_stats = qeth_core_get_ethtool_stats, 922 .get_sset_count = qeth_core_get_sset_count, 923 .get_drvinfo = qeth_core_get_drvinfo, 924 }; 925 926 static const struct net_device_ops qeth_l2_netdev_ops = { 927 .ndo_open = qeth_l2_open, 928 .ndo_stop = qeth_l2_stop, 929 .ndo_get_stats = qeth_get_stats, 930 .ndo_start_xmit = qeth_l2_hard_start_xmit, 931 .ndo_validate_addr = eth_validate_addr, 932 .ndo_set_rx_mode = qeth_l2_set_multicast_list, 933 .ndo_do_ioctl = qeth_l2_do_ioctl, 934 .ndo_set_mac_address = qeth_l2_set_mac_address, 935 .ndo_change_mtu = qeth_change_mtu, 936 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 937 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 938 .ndo_tx_timeout = qeth_tx_timeout, 939 }; 940 941 static int qeth_l2_setup_netdev(struct qeth_card *card) 942 { 943 switch (card->info.type) { 944 case QETH_CARD_TYPE_IQD: 945 card->dev = alloc_netdev(0, "hsi%d", ether_setup); 946 break; 947 case QETH_CARD_TYPE_OSN: 948 card->dev = alloc_netdev(0, "osn%d", ether_setup); 949 card->dev->flags |= IFF_NOARP; 950 break; 951 default: 952 card->dev = alloc_etherdev(0); 953 } 954 955 if (!card->dev) 956 return -ENODEV; 957 958 card->dev->ml_priv = card; 959 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 960 card->dev->mtu = card->info.initial_mtu; 961 card->dev->netdev_ops = &qeth_l2_netdev_ops; 962 if (card->info.type != QETH_CARD_TYPE_OSN) 963 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops); 964 else 965 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops); 966 card->dev->features |= NETIF_F_HW_VLAN_FILTER; 967 card->info.broadcast_capable = 1; 968 qeth_l2_request_initial_mac(card); 969 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 970 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT); 971 return register_netdev(card->dev); 972 } 973 974 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 975 { 976 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 977 int rc = 0; 978 enum qeth_card_states recover_flag; 979 980 BUG_ON(!card); 981 mutex_lock(&card->discipline_mutex); 982 mutex_lock(&card->conf_mutex); 983 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 984 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 985 986 recover_flag = card->state; 987 rc = qeth_core_hardsetup_card(card); 988 if (rc) { 989 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 990 rc = -ENODEV; 991 goto out_remove; 992 } 993 994 if (!card->dev && qeth_l2_setup_netdev(card)) { 995 rc = -ENODEV; 996 goto out_remove; 997 } 998 999 if (card->info.type != QETH_CARD_TYPE_OSN) 1000 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1001 1002 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1003 if (card->info.hwtrap && 1004 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1005 card->info.hwtrap = 0; 1006 } else 1007 card->info.hwtrap = 0; 1008 1009 card->state = CARD_STATE_HARDSETUP; 1010 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1011 qeth_print_status_message(card); 1012 1013 /* softsetup */ 1014 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1015 1016 rc = qeth_send_startlan(card); 1017 if (rc) { 1018 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1019 if (rc == 0xe080) { 1020 dev_warn(&card->gdev->dev, 1021 "The LAN is offline\n"); 1022 card->lan_online = 0; 1023 goto contin; 1024 } 1025 rc = -ENODEV; 1026 goto out_remove; 1027 } else 1028 card->lan_online = 1; 1029 1030 contin: 1031 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1032 (card->info.type == QETH_CARD_TYPE_OSX)) 1033 /* configure isolation level */ 1034 qeth_set_access_ctrl_online(card); 1035 1036 if (card->info.type != QETH_CARD_TYPE_OSN && 1037 card->info.type != QETH_CARD_TYPE_OSM) 1038 qeth_l2_process_vlans(card); 1039 1040 netif_tx_disable(card->dev); 1041 1042 rc = qeth_init_qdio_queues(card); 1043 if (rc) { 1044 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1045 rc = -ENODEV; 1046 goto out_remove; 1047 } 1048 card->state = CARD_STATE_SOFTSETUP; 1049 if (card->lan_online) 1050 netif_carrier_on(card->dev); 1051 else 1052 netif_carrier_off(card->dev); 1053 1054 qeth_set_allowed_threads(card, 0xffffffff, 0); 1055 if (recover_flag == CARD_STATE_RECOVER) { 1056 if (recovery_mode && 1057 card->info.type != QETH_CARD_TYPE_OSN) { 1058 __qeth_l2_open(card->dev); 1059 } else { 1060 rtnl_lock(); 1061 dev_open(card->dev); 1062 rtnl_unlock(); 1063 } 1064 /* this also sets saved unicast addresses */ 1065 qeth_l2_set_multicast_list(card->dev); 1066 } 1067 /* let user_space know that device is online */ 1068 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1069 mutex_unlock(&card->conf_mutex); 1070 mutex_unlock(&card->discipline_mutex); 1071 return 0; 1072 1073 out_remove: 1074 qeth_l2_stop_card(card, 0); 1075 ccw_device_set_offline(CARD_DDEV(card)); 1076 ccw_device_set_offline(CARD_WDEV(card)); 1077 ccw_device_set_offline(CARD_RDEV(card)); 1078 if (recover_flag == CARD_STATE_RECOVER) 1079 card->state = CARD_STATE_RECOVER; 1080 else 1081 card->state = CARD_STATE_DOWN; 1082 mutex_unlock(&card->conf_mutex); 1083 mutex_unlock(&card->discipline_mutex); 1084 return rc; 1085 } 1086 1087 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1088 { 1089 return __qeth_l2_set_online(gdev, 0); 1090 } 1091 1092 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1093 int recovery_mode) 1094 { 1095 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1096 int rc = 0, rc2 = 0, rc3 = 0; 1097 enum qeth_card_states recover_flag; 1098 1099 mutex_lock(&card->discipline_mutex); 1100 mutex_lock(&card->conf_mutex); 1101 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1102 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1103 1104 if (card->dev && netif_carrier_ok(card->dev)) 1105 netif_carrier_off(card->dev); 1106 recover_flag = card->state; 1107 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1108 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1109 card->info.hwtrap = 1; 1110 } 1111 qeth_l2_stop_card(card, recovery_mode); 1112 rc = ccw_device_set_offline(CARD_DDEV(card)); 1113 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1114 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1115 if (!rc) 1116 rc = (rc2) ? rc2 : rc3; 1117 if (rc) 1118 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1119 if (recover_flag == CARD_STATE_UP) 1120 card->state = CARD_STATE_RECOVER; 1121 /* let user_space know that device is offline */ 1122 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1123 mutex_unlock(&card->conf_mutex); 1124 mutex_unlock(&card->discipline_mutex); 1125 return 0; 1126 } 1127 1128 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1129 { 1130 return __qeth_l2_set_offline(cgdev, 0); 1131 } 1132 1133 static int qeth_l2_recover(void *ptr) 1134 { 1135 struct qeth_card *card; 1136 int rc = 0; 1137 1138 card = (struct qeth_card *) ptr; 1139 QETH_CARD_TEXT(card, 2, "recover1"); 1140 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1141 return 0; 1142 QETH_CARD_TEXT(card, 2, "recover2"); 1143 dev_warn(&card->gdev->dev, 1144 "A recovery process has been started for the device\n"); 1145 __qeth_l2_set_offline(card->gdev, 1); 1146 rc = __qeth_l2_set_online(card->gdev, 1); 1147 if (!rc) 1148 dev_info(&card->gdev->dev, 1149 "Device successfully recovered!\n"); 1150 else { 1151 rtnl_lock(); 1152 dev_close(card->dev); 1153 rtnl_unlock(); 1154 dev_warn(&card->gdev->dev, "The qeth device driver " 1155 "failed to recover an error on the device\n"); 1156 } 1157 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1158 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1159 return 0; 1160 } 1161 1162 static int __init qeth_l2_init(void) 1163 { 1164 pr_info("register layer 2 discipline\n"); 1165 return 0; 1166 } 1167 1168 static void __exit qeth_l2_exit(void) 1169 { 1170 pr_info("unregister layer 2 discipline\n"); 1171 } 1172 1173 static void qeth_l2_shutdown(struct ccwgroup_device *gdev) 1174 { 1175 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1176 qeth_set_allowed_threads(card, 0, 1); 1177 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 1178 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1179 qeth_qdio_clear_card(card, 0); 1180 qeth_clear_qdio_buffers(card); 1181 } 1182 1183 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1184 { 1185 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1186 1187 if (card->dev) 1188 netif_device_detach(card->dev); 1189 qeth_set_allowed_threads(card, 0, 1); 1190 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1191 if (gdev->state == CCWGROUP_OFFLINE) 1192 return 0; 1193 if (card->state == CARD_STATE_UP) { 1194 if (card->info.hwtrap) 1195 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1196 __qeth_l2_set_offline(card->gdev, 1); 1197 } else 1198 __qeth_l2_set_offline(card->gdev, 0); 1199 return 0; 1200 } 1201 1202 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1203 { 1204 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1205 int rc = 0; 1206 1207 if (gdev->state == CCWGROUP_OFFLINE) 1208 goto out; 1209 1210 if (card->state == CARD_STATE_RECOVER) { 1211 rc = __qeth_l2_set_online(card->gdev, 1); 1212 if (rc) { 1213 rtnl_lock(); 1214 dev_close(card->dev); 1215 rtnl_unlock(); 1216 } 1217 } else 1218 rc = __qeth_l2_set_online(card->gdev, 0); 1219 out: 1220 qeth_set_allowed_threads(card, 0xffffffff, 0); 1221 if (card->dev) 1222 netif_device_attach(card->dev); 1223 if (rc) 1224 dev_warn(&card->gdev->dev, "The qeth device driver " 1225 "failed to recover an error on the device\n"); 1226 return rc; 1227 } 1228 1229 struct ccwgroup_driver qeth_l2_ccwgroup_driver = { 1230 .probe = qeth_l2_probe_device, 1231 .remove = qeth_l2_remove_device, 1232 .set_online = qeth_l2_set_online, 1233 .set_offline = qeth_l2_set_offline, 1234 .shutdown = qeth_l2_shutdown, 1235 .freeze = qeth_l2_pm_suspend, 1236 .thaw = qeth_l2_pm_resume, 1237 .restore = qeth_l2_pm_resume, 1238 }; 1239 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver); 1240 1241 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1242 struct qeth_cmd_buffer *iob) 1243 { 1244 unsigned long flags; 1245 int rc = 0; 1246 1247 QETH_CARD_TEXT(card, 5, "osndctrd"); 1248 1249 wait_event(card->wait_q, 1250 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1251 qeth_prepare_control_data(card, len, iob); 1252 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1253 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1254 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1255 (addr_t) iob, 0, 0); 1256 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1257 if (rc) { 1258 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1259 "ccw_device_start rc = %i\n", rc); 1260 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1261 qeth_release_buffer(iob->channel, iob); 1262 atomic_set(&card->write.irq_pending, 0); 1263 wake_up(&card->wait_q); 1264 } 1265 return rc; 1266 } 1267 1268 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1269 struct qeth_cmd_buffer *iob, int data_len) 1270 { 1271 u16 s1, s2; 1272 1273 QETH_CARD_TEXT(card, 4, "osndipa"); 1274 1275 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1276 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1277 s2 = (u16)data_len; 1278 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1279 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1280 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1281 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1282 return qeth_osn_send_control_data(card, s1, iob); 1283 } 1284 1285 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1286 { 1287 struct qeth_cmd_buffer *iob; 1288 struct qeth_card *card; 1289 int rc; 1290 1291 if (!dev) 1292 return -ENODEV; 1293 card = dev->ml_priv; 1294 if (!card) 1295 return -ENODEV; 1296 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1297 if ((card->state != CARD_STATE_UP) && 1298 (card->state != CARD_STATE_SOFTSETUP)) 1299 return -ENODEV; 1300 iob = qeth_wait_for_buffer(&card->write); 1301 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1302 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1303 return rc; 1304 } 1305 EXPORT_SYMBOL(qeth_osn_assist); 1306 1307 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1308 int (*assist_cb)(struct net_device *, void *), 1309 int (*data_cb)(struct sk_buff *)) 1310 { 1311 struct qeth_card *card; 1312 1313 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1314 if (*dev == NULL) 1315 return -ENODEV; 1316 card = (*dev)->ml_priv; 1317 if (!card) 1318 return -ENODEV; 1319 QETH_CARD_TEXT(card, 2, "osnreg"); 1320 if ((assist_cb == NULL) || (data_cb == NULL)) 1321 return -EINVAL; 1322 card->osn_info.assist_cb = assist_cb; 1323 card->osn_info.data_cb = data_cb; 1324 return 0; 1325 } 1326 EXPORT_SYMBOL(qeth_osn_register); 1327 1328 void qeth_osn_deregister(struct net_device *dev) 1329 { 1330 struct qeth_card *card; 1331 1332 if (!dev) 1333 return; 1334 card = dev->ml_priv; 1335 if (!card) 1336 return; 1337 QETH_CARD_TEXT(card, 2, "osndereg"); 1338 card->osn_info.assist_cb = NULL; 1339 card->osn_info.data_cb = NULL; 1340 return; 1341 } 1342 EXPORT_SYMBOL(qeth_osn_deregister); 1343 1344 module_init(qeth_l2_init); 1345 module_exit(qeth_l2_exit); 1346 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 1347 MODULE_DESCRIPTION("qeth layer 2 discipline"); 1348 MODULE_LICENSE("GPL"); 1349