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 27static int qeth_l2_set_offline(struct ccwgroup_device *); 28static int qeth_l2_stop(struct net_device *); 29static int qeth_l2_send_delmac(struct qeth_card *, __u8 *); 30static 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)); 35static void qeth_l2_set_multicast_list(struct net_device *); 36static int qeth_l2_recover(void *); 37 38static 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 case SIOC_QETH_QUERY_OAT: 79 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); 80 break; 81 default: 82 rc = -EOPNOTSUPP; 83 } 84 if (rc) 85 QETH_CARD_TEXT_(card, 2, "ioce%d", rc); 86 return rc; 87} 88 89static int qeth_l2_verify_dev(struct net_device *dev) 90{ 91 struct qeth_card *card; 92 unsigned long flags; 93 int rc = 0; 94 95 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 96 list_for_each_entry(card, &qeth_core_card_list.list, list) { 97 if (card->dev == dev) { 98 rc = QETH_REAL_CARD; 99 break; 100 } 101 } 102 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 103 104 return rc; 105} 106 107static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 108{ 109 struct qeth_card *card; 110 struct net_device *ndev; 111 __u16 temp_dev_no; 112 unsigned long flags; 113 struct ccw_dev_id read_devid; 114 115 ndev = NULL; 116 memcpy(&temp_dev_no, read_dev_no, 2); 117 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 118 list_for_each_entry(card, &qeth_core_card_list.list, list) { 119 ccw_device_get_id(CARD_RDEV(card), &read_devid); 120 if (read_devid.devno == temp_dev_no) { 121 ndev = card->dev; 122 break; 123 } 124 } 125 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 126 return ndev; 127} 128 129static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card, 130 struct qeth_reply *reply, 131 unsigned long data) 132{ 133 struct qeth_ipa_cmd *cmd; 134 __u8 *mac; 135 136 QETH_CARD_TEXT(card, 2, "L2Sgmacb"); 137 cmd = (struct qeth_ipa_cmd *) data; 138 mac = &cmd->data.setdelmac.mac[0]; 139 /* MAC already registered, needed in couple/uncouple case */ 140 if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) { 141 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n", 142 mac, QETH_CARD_IFNAME(card)); 143 cmd->hdr.return_code = 0; 144 } 145 if (cmd->hdr.return_code) 146 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n", 147 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code); 148 return 0; 149} 150 151static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) 152{ 153 QETH_CARD_TEXT(card, 2, "L2Sgmac"); 154 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC, 155 qeth_l2_send_setgroupmac_cb); 156} 157 158static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card, 159 struct qeth_reply *reply, 160 unsigned long data) 161{ 162 struct qeth_ipa_cmd *cmd; 163 __u8 *mac; 164 165 QETH_CARD_TEXT(card, 2, "L2Dgmacb"); 166 cmd = (struct qeth_ipa_cmd *) data; 167 mac = &cmd->data.setdelmac.mac[0]; 168 if (cmd->hdr.return_code) 169 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n", 170 mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code); 171 return 0; 172} 173 174static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) 175{ 176 QETH_CARD_TEXT(card, 2, "L2Dgmac"); 177 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC, 178 qeth_l2_send_delgroupmac_cb); 179} 180 181static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac) 182{ 183 struct qeth_mc_mac *mc; 184 int rc; 185 186 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC); 187 188 if (!mc) 189 return; 190 191 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN); 192 mc->mc_addrlen = OSA_ADDR_LEN; 193 mc->is_vmac = vmac; 194 195 if (vmac) { 196 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC, 197 NULL); 198 } else { 199 rc = qeth_l2_send_setgroupmac(card, mac); 200 } 201 202 if (!rc) 203 list_add_tail(&mc->list, &card->mc_list); 204 else 205 kfree(mc); 206} 207 208static void qeth_l2_del_all_mc(struct qeth_card *card, int del) 209{ 210 struct qeth_mc_mac *mc, *tmp; 211 212 spin_lock_bh(&card->mclock); 213 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) { 214 if (del) { 215 if (mc->is_vmac) 216 qeth_l2_send_setdelmac(card, mc->mc_addr, 217 IPA_CMD_DELVMAC, NULL); 218 else 219 qeth_l2_send_delgroupmac(card, mc->mc_addr); 220 } 221 list_del(&mc->list); 222 kfree(mc); 223 } 224 spin_unlock_bh(&card->mclock); 225} 226 227static inline int qeth_l2_get_cast_type(struct qeth_card *card, 228 struct sk_buff *skb) 229{ 230 if (card->info.type == QETH_CARD_TYPE_OSN) 231 return RTN_UNSPEC; 232 if (is_broadcast_ether_addr(skb->data)) 233 return RTN_BROADCAST; 234 if (is_multicast_ether_addr(skb->data)) 235 return RTN_MULTICAST; 236 return RTN_UNSPEC; 237} 238 239static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 240 struct sk_buff *skb, int ipv, int cast_type) 241{ 242 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); 243 244 memset(hdr, 0, sizeof(struct qeth_hdr)); 245 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 246 247 /* set byte byte 3 to casting flags */ 248 if (cast_type == RTN_MULTICAST) 249 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 250 else if (cast_type == RTN_BROADCAST) 251 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 252 else 253 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 254 255 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE; 256 /* VSWITCH relies on the VLAN 257 * information to be present in 258 * the QDIO header */ 259 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 260 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 261 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 262 } 263} 264 265static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 266 struct qeth_reply *reply, unsigned long data) 267{ 268 struct qeth_ipa_cmd *cmd; 269 270 QETH_CARD_TEXT(card, 2, "L2sdvcb"); 271 cmd = (struct qeth_ipa_cmd *) data; 272 if (cmd->hdr.return_code) { 273 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. " 274 "Continuing\n", cmd->data.setdelvlan.vlan_id, 275 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 276 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); 277 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 278 } 279 return 0; 280} 281 282static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 283 enum qeth_ipa_cmds ipacmd) 284{ 285 struct qeth_ipa_cmd *cmd; 286 struct qeth_cmd_buffer *iob; 287 288 QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); 289 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 290 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 291 cmd->data.setdelvlan.vlan_id = i; 292 return qeth_send_ipa_cmd(card, iob, 293 qeth_l2_send_setdelvlan_cb, NULL); 294} 295 296static void qeth_l2_process_vlans(struct qeth_card *card) 297{ 298 struct qeth_vlan_vid *id; 299 QETH_CARD_TEXT(card, 3, "L2prcvln"); 300 spin_lock_bh(&card->vlanlock); 301 list_for_each_entry(id, &card->vid_list, list) { 302 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); 303 } 304 spin_unlock_bh(&card->vlanlock); 305} 306 307static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) 308{ 309 struct qeth_card *card = dev->ml_priv; 310 struct qeth_vlan_vid *id; 311 312 QETH_CARD_TEXT_(card, 4, "aid:%d", vid); 313 if (!vid) 314 return 0; 315 if (card->info.type == QETH_CARD_TYPE_OSM) { 316 QETH_CARD_TEXT(card, 3, "aidOSM"); 317 return 0; 318 } 319 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 320 QETH_CARD_TEXT(card, 3, "aidREC"); 321 return 0; 322 } 323 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 324 if (id) { 325 id->vid = vid; 326 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 327 spin_lock_bh(&card->vlanlock); 328 list_add_tail(&id->list, &card->vid_list); 329 spin_unlock_bh(&card->vlanlock); 330 } else { 331 return -ENOMEM; 332 } 333 return 0; 334} 335 336static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) 337{ 338 struct qeth_vlan_vid *id, *tmpid = NULL; 339 struct qeth_card *card = dev->ml_priv; 340 341 QETH_CARD_TEXT_(card, 4, "kid:%d", vid); 342 if (card->info.type == QETH_CARD_TYPE_OSM) { 343 QETH_CARD_TEXT(card, 3, "kidOSM"); 344 return 0; 345 } 346 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 347 QETH_CARD_TEXT(card, 3, "kidREC"); 348 return 0; 349 } 350 spin_lock_bh(&card->vlanlock); 351 list_for_each_entry(id, &card->vid_list, list) { 352 if (id->vid == vid) { 353 list_del(&id->list); 354 tmpid = id; 355 break; 356 } 357 } 358 spin_unlock_bh(&card->vlanlock); 359 if (tmpid) { 360 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 361 kfree(tmpid); 362 } 363 qeth_l2_set_multicast_list(card->dev); 364 return 0; 365} 366 367static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 368{ 369 int rc = 0; 370 371 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 372 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 373 374 qeth_set_allowed_threads(card, 0, 1); 375 if (card->read.state == CH_STATE_UP && 376 card->write.state == CH_STATE_UP && 377 (card->state == CARD_STATE_UP)) { 378 if (recovery_mode && 379 card->info.type != QETH_CARD_TYPE_OSN) { 380 qeth_l2_stop(card->dev); 381 } else { 382 rtnl_lock(); 383 dev_close(card->dev); 384 rtnl_unlock(); 385 } 386 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 387 card->state = CARD_STATE_SOFTSETUP; 388 } 389 if (card->state == CARD_STATE_SOFTSETUP) { 390 qeth_l2_del_all_mc(card, 0); 391 qeth_clear_ipacmd_list(card); 392 card->state = CARD_STATE_HARDSETUP; 393 } 394 if (card->state == CARD_STATE_HARDSETUP) { 395 qeth_qdio_clear_card(card, 0); 396 qeth_clear_qdio_buffers(card); 397 qeth_clear_working_pool_list(card); 398 card->state = CARD_STATE_DOWN; 399 } 400 if (card->state == CARD_STATE_DOWN) { 401 qeth_clear_cmd_buffers(&card->read); 402 qeth_clear_cmd_buffers(&card->write); 403 } 404 return rc; 405} 406 407static int qeth_l2_process_inbound_buffer(struct qeth_card *card, 408 int budget, int *done) 409{ 410 int work_done = 0; 411 struct sk_buff *skb; 412 struct qeth_hdr *hdr; 413 unsigned int len; 414 415 *done = 0; 416 BUG_ON(!budget); 417 while (budget) { 418 skb = qeth_core_get_next_skb(card, 419 &card->qdio.in_q->bufs[card->rx.b_index], 420 &card->rx.b_element, &card->rx.e_offset, &hdr); 421 if (!skb) { 422 *done = 1; 423 break; 424 } 425 skb->dev = card->dev; 426 switch (hdr->hdr.l2.id) { 427 case QETH_HEADER_TYPE_LAYER2: 428 skb->pkt_type = PACKET_HOST; 429 skb->protocol = eth_type_trans(skb, skb->dev); 430 skb->ip_summed = CHECKSUM_NONE; 431 if (skb->protocol == htons(ETH_P_802_2)) 432 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 433 len = skb->len; 434 netif_receive_skb(skb); 435 break; 436 case QETH_HEADER_TYPE_OSN: 437 if (card->info.type == QETH_CARD_TYPE_OSN) { 438 skb_push(skb, sizeof(struct qeth_hdr)); 439 skb_copy_to_linear_data(skb, hdr, 440 sizeof(struct qeth_hdr)); 441 len = skb->len; 442 card->osn_info.data_cb(skb); 443 break; 444 } 445 /* else unknown */ 446 default: 447 dev_kfree_skb_any(skb); 448 QETH_CARD_TEXT(card, 3, "inbunkno"); 449 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 450 continue; 451 } 452 work_done++; 453 budget--; 454 card->stats.rx_packets++; 455 card->stats.rx_bytes += len; 456 } 457 return work_done; 458} 459 460static int qeth_l2_poll(struct napi_struct *napi, int budget) 461{ 462 struct qeth_card *card = container_of(napi, struct qeth_card, napi); 463 int work_done = 0; 464 struct qeth_qdio_buffer *buffer; 465 int done; 466 int new_budget = budget; 467 468 if (card->options.performance_stats) { 469 card->perf_stats.inbound_cnt++; 470 card->perf_stats.inbound_start_time = qeth_get_micros(); 471 } 472 473 while (1) { 474 if (!card->rx.b_count) { 475 card->rx.qdio_err = 0; 476 card->rx.b_count = qdio_get_next_buffers( 477 card->data.ccwdev, 0, &card->rx.b_index, 478 &card->rx.qdio_err); 479 if (card->rx.b_count <= 0) { 480 card->rx.b_count = 0; 481 break; 482 } 483 card->rx.b_element = 484 &card->qdio.in_q->bufs[card->rx.b_index] 485 .buffer->element[0]; 486 card->rx.e_offset = 0; 487 } 488 489 while (card->rx.b_count) { 490 buffer = &card->qdio.in_q->bufs[card->rx.b_index]; 491 if (!(card->rx.qdio_err && 492 qeth_check_qdio_errors(card, buffer->buffer, 493 card->rx.qdio_err, "qinerr"))) 494 work_done += qeth_l2_process_inbound_buffer( 495 card, new_budget, &done); 496 else 497 done = 1; 498 499 if (done) { 500 if (card->options.performance_stats) 501 card->perf_stats.bufs_rec++; 502 qeth_put_buffer_pool_entry(card, 503 buffer->pool_entry); 504 qeth_queue_input_buffer(card, card->rx.b_index); 505 card->rx.b_count--; 506 if (card->rx.b_count) { 507 card->rx.b_index = 508 (card->rx.b_index + 1) % 509 QDIO_MAX_BUFFERS_PER_Q; 510 card->rx.b_element = 511 &card->qdio.in_q 512 ->bufs[card->rx.b_index] 513 .buffer->element[0]; 514 card->rx.e_offset = 0; 515 } 516 } 517 518 if (work_done >= budget) 519 goto out; 520 else 521 new_budget = budget - work_done; 522 } 523 } 524 525 napi_complete(napi); 526 if (qdio_start_irq(card->data.ccwdev, 0)) 527 napi_schedule(&card->napi); 528out: 529 if (card->options.performance_stats) 530 card->perf_stats.inbound_time += qeth_get_micros() - 531 card->perf_stats.inbound_start_time; 532 return work_done; 533} 534 535static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 536 enum qeth_ipa_cmds ipacmd, 537 int (*reply_cb) (struct qeth_card *, 538 struct qeth_reply*, 539 unsigned long)) 540{ 541 struct qeth_ipa_cmd *cmd; 542 struct qeth_cmd_buffer *iob; 543 544 QETH_CARD_TEXT(card, 2, "L2sdmac"); 545 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 546 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 547 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 548 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 549 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL); 550} 551 552static int qeth_l2_send_setmac_cb(struct qeth_card *card, 553 struct qeth_reply *reply, 554 unsigned long data) 555{ 556 struct qeth_ipa_cmd *cmd; 557 558 QETH_CARD_TEXT(card, 2, "L2Smaccb"); 559 cmd = (struct qeth_ipa_cmd *) data; 560 if (cmd->hdr.return_code) { 561 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code); 562 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 563 switch (cmd->hdr.return_code) { 564 case IPA_RC_L2_DUP_MAC: 565 case IPA_RC_L2_DUP_LAYER3_MAC: 566 dev_warn(&card->gdev->dev, 567 "MAC address %pM already exists\n", 568 cmd->data.setdelmac.mac); 569 break; 570 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: 571 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: 572 dev_warn(&card->gdev->dev, 573 "MAC address %pM is not authorized\n", 574 cmd->data.setdelmac.mac); 575 break; 576 default: 577 break; 578 } 579 } else { 580 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 581 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac, 582 OSA_ADDR_LEN); 583 dev_info(&card->gdev->dev, 584 "MAC address %pM successfully registered on device %s\n", 585 card->dev->dev_addr, card->dev->name); 586 } 587 return 0; 588} 589 590static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 591{ 592 QETH_CARD_TEXT(card, 2, "L2Setmac"); 593 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC, 594 qeth_l2_send_setmac_cb); 595} 596 597static int qeth_l2_send_delmac_cb(struct qeth_card *card, 598 struct qeth_reply *reply, 599 unsigned long data) 600{ 601 struct qeth_ipa_cmd *cmd; 602 603 QETH_CARD_TEXT(card, 2, "L2Dmaccb"); 604 cmd = (struct qeth_ipa_cmd *) data; 605 if (cmd->hdr.return_code) { 606 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); 607 return 0; 608 } 609 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 610 611 return 0; 612} 613 614static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 615{ 616 QETH_CARD_TEXT(card, 2, "L2Delmac"); 617 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 618 return 0; 619 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC, 620 qeth_l2_send_delmac_cb); 621} 622 623static int qeth_l2_request_initial_mac(struct qeth_card *card) 624{ 625 int rc = 0; 626 char vendor_pre[] = {0x02, 0x00, 0x00}; 627 628 QETH_DBF_TEXT(SETUP, 2, "doL2init"); 629 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 630 631 rc = qeth_query_setadapterparms(card); 632 if (rc) { 633 QETH_DBF_MESSAGE(2, "could not query adapter parameters on " 634 "device %s: x%x\n", CARD_BUS_ID(card), rc); 635 } 636 637 if (card->info.type == QETH_CARD_TYPE_IQD || 638 card->info.type == QETH_CARD_TYPE_OSM || 639 card->info.type == QETH_CARD_TYPE_OSX || 640 card->info.guestlan) { 641 rc = qeth_setadpparms_change_macaddr(card); 642 if (rc) { 643 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 644 "device %s: x%x\n", CARD_BUS_ID(card), rc); 645 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 646 return rc; 647 } 648 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN); 649 } else { 650 random_ether_addr(card->dev->dev_addr); 651 memcpy(card->dev->dev_addr, vendor_pre, 3); 652 } 653 return 0; 654} 655 656static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 657{ 658 struct sockaddr *addr = p; 659 struct qeth_card *card = dev->ml_priv; 660 int rc = 0; 661 662 QETH_CARD_TEXT(card, 3, "setmac"); 663 664 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { 665 QETH_CARD_TEXT(card, 3, "setmcINV"); 666 return -EOPNOTSUPP; 667 } 668 669 if (card->info.type == QETH_CARD_TYPE_OSN || 670 card->info.type == QETH_CARD_TYPE_OSM || 671 card->info.type == QETH_CARD_TYPE_OSX) { 672 QETH_CARD_TEXT(card, 3, "setmcTYP"); 673 return -EOPNOTSUPP; 674 } 675 QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN); 676 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 677 QETH_CARD_TEXT(card, 3, "setmcREC"); 678 return -ERESTARTSYS; 679 } 680 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 681 if (!rc) 682 rc = qeth_l2_send_setmac(card, addr->sa_data); 683 return rc ? -EINVAL : 0; 684} 685 686static void qeth_l2_set_multicast_list(struct net_device *dev) 687{ 688 struct qeth_card *card = dev->ml_priv; 689 struct netdev_hw_addr *ha; 690 691 if (card->info.type == QETH_CARD_TYPE_OSN) 692 return ; 693 694 QETH_CARD_TEXT(card, 3, "setmulti"); 695 if (qeth_threads_running(card, QETH_RECOVER_THREAD) && 696 (card->state != CARD_STATE_UP)) 697 return; 698 qeth_l2_del_all_mc(card, 1); 699 spin_lock_bh(&card->mclock); 700 netdev_for_each_mc_addr(ha, dev) 701 qeth_l2_add_mc(card, ha->addr, 0); 702 703 netdev_for_each_uc_addr(ha, dev) 704 qeth_l2_add_mc(card, ha->addr, 1); 705 706 spin_unlock_bh(&card->mclock); 707 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 708 return; 709 qeth_setadp_promisc_mode(card); 710} 711 712static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 713{ 714 int rc; 715 struct qeth_hdr *hdr = NULL; 716 int elements = 0; 717 struct qeth_card *card = dev->ml_priv; 718 struct sk_buff *new_skb = skb; 719 int ipv = qeth_get_ip_version(skb); 720 int cast_type = qeth_l2_get_cast_type(card, skb); 721 struct qeth_qdio_out_q *queue = card->qdio.out_qs 722 [qeth_get_priority_queue(card, skb, ipv, cast_type)]; 723 int tx_bytes = skb->len; 724 int data_offset = -1; 725 int elements_needed = 0; 726 int hd_len = 0; 727 728 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 729 card->stats.tx_carrier_errors++; 730 goto tx_drop; 731 } 732 733 if ((card->info.type == QETH_CARD_TYPE_OSN) && 734 (skb->protocol == htons(ETH_P_IPV6))) 735 goto tx_drop; 736 737 if (card->options.performance_stats) { 738 card->perf_stats.outbound_cnt++; 739 card->perf_stats.outbound_start_time = qeth_get_micros(); 740 } 741 netif_stop_queue(dev); 742 743 if (card->info.type == QETH_CARD_TYPE_OSN) 744 hdr = (struct qeth_hdr *)skb->data; 745 else { 746 if (card->info.type == QETH_CARD_TYPE_IQD) { 747 new_skb = skb; 748 data_offset = ETH_HLEN; 749 hd_len = ETH_HLEN; 750 hdr = kmem_cache_alloc(qeth_core_header_cache, 751 GFP_ATOMIC); 752 if (!hdr) 753 goto tx_drop; 754 elements_needed++; 755 skb_reset_mac_header(new_skb); 756 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type); 757 hdr->hdr.l2.pkt_length = new_skb->len; 758 memcpy(((char *)hdr) + sizeof(struct qeth_hdr), 759 skb_mac_header(new_skb), ETH_HLEN); 760 } else { 761 /* create a clone with writeable headroom */ 762 new_skb = skb_realloc_headroom(skb, 763 sizeof(struct qeth_hdr)); 764 if (!new_skb) 765 goto tx_drop; 766 hdr = (struct qeth_hdr *)skb_push(new_skb, 767 sizeof(struct qeth_hdr)); 768 skb_set_mac_header(new_skb, sizeof(struct qeth_hdr)); 769 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type); 770 } 771 } 772 773 elements = qeth_get_elements_no(card, (void *)hdr, new_skb, 774 elements_needed); 775 if (!elements) { 776 if (data_offset >= 0) 777 kmem_cache_free(qeth_core_header_cache, hdr); 778 goto tx_drop; 779 } 780 781 if (card->info.type != QETH_CARD_TYPE_IQD) { 782 if (qeth_hdr_chk_and_bounce(new_skb, 783 sizeof(struct qeth_hdr_layer2))) 784 goto tx_drop; 785 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 786 elements); 787 } else 788 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 789 elements, data_offset, hd_len); 790 if (!rc) { 791 card->stats.tx_packets++; 792 card->stats.tx_bytes += tx_bytes; 793 if (new_skb != skb) 794 dev_kfree_skb_any(skb); 795 rc = NETDEV_TX_OK; 796 } else { 797 if (data_offset >= 0) 798 kmem_cache_free(qeth_core_header_cache, hdr); 799 800 if (rc == -EBUSY) { 801 if (new_skb != skb) 802 dev_kfree_skb_any(new_skb); 803 return NETDEV_TX_BUSY; 804 } else 805 goto tx_drop; 806 } 807 808 netif_wake_queue(dev); 809 if (card->options.performance_stats) 810 card->perf_stats.outbound_time += qeth_get_micros() - 811 card->perf_stats.outbound_start_time; 812 return rc; 813 814tx_drop: 815 card->stats.tx_dropped++; 816 card->stats.tx_errors++; 817 if ((new_skb != skb) && new_skb) 818 dev_kfree_skb_any(new_skb); 819 dev_kfree_skb_any(skb); 820 netif_wake_queue(dev); 821 return NETDEV_TX_OK; 822} 823 824static int __qeth_l2_open(struct net_device *dev) 825{ 826 struct qeth_card *card = dev->ml_priv; 827 int rc = 0; 828 829 QETH_CARD_TEXT(card, 4, "qethopen"); 830 if (card->state == CARD_STATE_UP) 831 return rc; 832 if (card->state != CARD_STATE_SOFTSETUP) 833 return -ENODEV; 834 835 if ((card->info.type != QETH_CARD_TYPE_OSN) && 836 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 837 QETH_CARD_TEXT(card, 4, "nomacadr"); 838 return -EPERM; 839 } 840 card->data.state = CH_STATE_UP; 841 card->state = CARD_STATE_UP; 842 netif_start_queue(dev); 843 844 if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { 845 napi_enable(&card->napi); 846 napi_schedule(&card->napi); 847 } else 848 rc = -EIO; 849 return rc; 850} 851 852static int qeth_l2_open(struct net_device *dev) 853{ 854 struct qeth_card *card = dev->ml_priv; 855 856 QETH_CARD_TEXT(card, 5, "qethope_"); 857 if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { 858 QETH_CARD_TEXT(card, 3, "openREC"); 859 return -ERESTARTSYS; 860 } 861 return __qeth_l2_open(dev); 862} 863 864static int qeth_l2_stop(struct net_device *dev) 865{ 866 struct qeth_card *card = dev->ml_priv; 867 868 QETH_CARD_TEXT(card, 4, "qethstop"); 869 netif_tx_disable(dev); 870 if (card->state == CARD_STATE_UP) { 871 card->state = CARD_STATE_SOFTSETUP; 872 napi_disable(&card->napi); 873 } 874 return 0; 875} 876 877static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 878{ 879 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 880 881 INIT_LIST_HEAD(&card->vid_list); 882 INIT_LIST_HEAD(&card->mc_list); 883 card->options.layer2 = 1; 884 card->info.hwtrap = 0; 885 card->discipline.start_poll = qeth_qdio_start_poll; 886 card->discipline.input_handler = (qdio_handler_t *) 887 qeth_qdio_input_handler; 888 card->discipline.output_handler = (qdio_handler_t *) 889 qeth_qdio_output_handler; 890 card->discipline.recover = qeth_l2_recover; 891 return 0; 892} 893 894static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 895{ 896 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 897 898 qeth_set_allowed_threads(card, 0, 1); 899 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 900 901 if (cgdev->state == CCWGROUP_ONLINE) 902 qeth_l2_set_offline(cgdev); 903 904 if (card->dev) { 905 unregister_netdev(card->dev); 906 card->dev = NULL; 907 } 908 return; 909} 910 911static const struct ethtool_ops qeth_l2_ethtool_ops = { 912 .get_link = ethtool_op_get_link, 913 .get_strings = qeth_core_get_strings, 914 .get_ethtool_stats = qeth_core_get_ethtool_stats, 915 .get_sset_count = qeth_core_get_sset_count, 916 .get_drvinfo = qeth_core_get_drvinfo, 917 .get_settings = qeth_core_ethtool_get_settings, 918}; 919 920static const struct ethtool_ops qeth_l2_osn_ops = { 921 .get_strings = qeth_core_get_strings, 922 .get_ethtool_stats = qeth_core_get_ethtool_stats, 923 .get_sset_count = qeth_core_get_sset_count, 924 .get_drvinfo = qeth_core_get_drvinfo, 925}; 926 927static const struct net_device_ops qeth_l2_netdev_ops = { 928 .ndo_open = qeth_l2_open, 929 .ndo_stop = qeth_l2_stop, 930 .ndo_get_stats = qeth_get_stats, 931 .ndo_start_xmit = qeth_l2_hard_start_xmit, 932 .ndo_validate_addr = eth_validate_addr, 933 .ndo_set_rx_mode = qeth_l2_set_multicast_list, 934 .ndo_do_ioctl = qeth_l2_do_ioctl, 935 .ndo_set_mac_address = qeth_l2_set_mac_address, 936 .ndo_change_mtu = qeth_change_mtu, 937 .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, 938 .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, 939 .ndo_tx_timeout = qeth_tx_timeout, 940}; 941 942static int qeth_l2_setup_netdev(struct qeth_card *card) 943{ 944 switch (card->info.type) { 945 case QETH_CARD_TYPE_IQD: 946 card->dev = alloc_netdev(0, "hsi%d", ether_setup); 947 break; 948 case QETH_CARD_TYPE_OSN: 949 card->dev = alloc_netdev(0, "osn%d", ether_setup); 950 card->dev->flags |= IFF_NOARP; 951 break; 952 default: 953 card->dev = alloc_etherdev(0); 954 } 955 956 if (!card->dev) 957 return -ENODEV; 958 959 card->dev->ml_priv = card; 960 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 961 card->dev->mtu = card->info.initial_mtu; 962 card->dev->netdev_ops = &qeth_l2_netdev_ops; 963 if (card->info.type != QETH_CARD_TYPE_OSN) 964 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops); 965 else 966 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops); 967 card->dev->features |= NETIF_F_HW_VLAN_FILTER; 968 card->info.broadcast_capable = 1; 969 qeth_l2_request_initial_mac(card); 970 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 971 netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT); 972 return register_netdev(card->dev); 973} 974 975static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 976{ 977 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 978 int rc = 0; 979 enum qeth_card_states recover_flag; 980 981 BUG_ON(!card); 982 mutex_lock(&card->discipline_mutex); 983 mutex_lock(&card->conf_mutex); 984 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 985 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 986 987 recover_flag = card->state; 988 rc = qeth_core_hardsetup_card(card); 989 if (rc) { 990 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 991 rc = -ENODEV; 992 goto out_remove; 993 } 994 995 if (!card->dev && qeth_l2_setup_netdev(card)) { 996 rc = -ENODEV; 997 goto out_remove; 998 } 999 1000 if (card->info.type != QETH_CARD_TYPE_OSN) 1001 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 1002 1003 if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { 1004 if (card->info.hwtrap && 1005 qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) 1006 card->info.hwtrap = 0; 1007 } else 1008 card->info.hwtrap = 0; 1009 1010 card->state = CARD_STATE_HARDSETUP; 1011 memset(&card->rx, 0, sizeof(struct qeth_rx)); 1012 qeth_print_status_message(card); 1013 1014 /* softsetup */ 1015 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 1016 1017 rc = qeth_send_startlan(card); 1018 if (rc) { 1019 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1020 if (rc == 0xe080) { 1021 dev_warn(&card->gdev->dev, 1022 "The LAN is offline\n"); 1023 card->lan_online = 0; 1024 goto contin; 1025 } 1026 rc = -ENODEV; 1027 goto out_remove; 1028 } else 1029 card->lan_online = 1; 1030 1031contin: 1032 if ((card->info.type == QETH_CARD_TYPE_OSD) || 1033 (card->info.type == QETH_CARD_TYPE_OSX)) 1034 /* configure isolation level */ 1035 qeth_set_access_ctrl_online(card); 1036 1037 if (card->info.type != QETH_CARD_TYPE_OSN && 1038 card->info.type != QETH_CARD_TYPE_OSM) 1039 qeth_l2_process_vlans(card); 1040 1041 netif_tx_disable(card->dev); 1042 1043 rc = qeth_init_qdio_queues(card); 1044 if (rc) { 1045 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1046 rc = -ENODEV; 1047 goto out_remove; 1048 } 1049 card->state = CARD_STATE_SOFTSETUP; 1050 if (card->lan_online) 1051 netif_carrier_on(card->dev); 1052 else 1053 netif_carrier_off(card->dev); 1054 1055 qeth_set_allowed_threads(card, 0xffffffff, 0); 1056 if (recover_flag == CARD_STATE_RECOVER) { 1057 if (recovery_mode && 1058 card->info.type != QETH_CARD_TYPE_OSN) { 1059 __qeth_l2_open(card->dev); 1060 } else { 1061 rtnl_lock(); 1062 dev_open(card->dev); 1063 rtnl_unlock(); 1064 } 1065 /* this also sets saved unicast addresses */ 1066 qeth_l2_set_multicast_list(card->dev); 1067 } 1068 /* let user_space know that device is online */ 1069 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1070 mutex_unlock(&card->conf_mutex); 1071 mutex_unlock(&card->discipline_mutex); 1072 return 0; 1073 1074out_remove: 1075 qeth_l2_stop_card(card, 0); 1076 ccw_device_set_offline(CARD_DDEV(card)); 1077 ccw_device_set_offline(CARD_WDEV(card)); 1078 ccw_device_set_offline(CARD_RDEV(card)); 1079 if (recover_flag == CARD_STATE_RECOVER) 1080 card->state = CARD_STATE_RECOVER; 1081 else 1082 card->state = CARD_STATE_DOWN; 1083 mutex_unlock(&card->conf_mutex); 1084 mutex_unlock(&card->discipline_mutex); 1085 return rc; 1086} 1087 1088static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1089{ 1090 return __qeth_l2_set_online(gdev, 0); 1091} 1092 1093static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1094 int recovery_mode) 1095{ 1096 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1097 int rc = 0, rc2 = 0, rc3 = 0; 1098 enum qeth_card_states recover_flag; 1099 1100 mutex_lock(&card->discipline_mutex); 1101 mutex_lock(&card->conf_mutex); 1102 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1103 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1104 1105 if (card->dev && netif_carrier_ok(card->dev)) 1106 netif_carrier_off(card->dev); 1107 recover_flag = card->state; 1108 if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { 1109 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1110 card->info.hwtrap = 1; 1111 } 1112 qeth_l2_stop_card(card, recovery_mode); 1113 rc = ccw_device_set_offline(CARD_DDEV(card)); 1114 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1115 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1116 if (!rc) 1117 rc = (rc2) ? rc2 : rc3; 1118 if (rc) 1119 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1120 if (recover_flag == CARD_STATE_UP) 1121 card->state = CARD_STATE_RECOVER; 1122 /* let user_space know that device is offline */ 1123 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1124 mutex_unlock(&card->conf_mutex); 1125 mutex_unlock(&card->discipline_mutex); 1126 return 0; 1127} 1128 1129static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1130{ 1131 return __qeth_l2_set_offline(cgdev, 0); 1132} 1133 1134static int qeth_l2_recover(void *ptr) 1135{ 1136 struct qeth_card *card; 1137 int rc = 0; 1138 1139 card = (struct qeth_card *) ptr; 1140 QETH_CARD_TEXT(card, 2, "recover1"); 1141 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1142 return 0; 1143 QETH_CARD_TEXT(card, 2, "recover2"); 1144 dev_warn(&card->gdev->dev, 1145 "A recovery process has been started for the device\n"); 1146 __qeth_l2_set_offline(card->gdev, 1); 1147 rc = __qeth_l2_set_online(card->gdev, 1); 1148 if (!rc) 1149 dev_info(&card->gdev->dev, 1150 "Device successfully recovered!\n"); 1151 else { 1152 rtnl_lock(); 1153 dev_close(card->dev); 1154 rtnl_unlock(); 1155 dev_warn(&card->gdev->dev, "The qeth device driver " 1156 "failed to recover an error on the device\n"); 1157 } 1158 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1159 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1160 return 0; 1161} 1162 1163static int __init qeth_l2_init(void) 1164{ 1165 pr_info("register layer 2 discipline\n"); 1166 return 0; 1167} 1168 1169static void __exit qeth_l2_exit(void) 1170{ 1171 pr_info("unregister layer 2 discipline\n"); 1172} 1173 1174static void qeth_l2_shutdown(struct ccwgroup_device *gdev) 1175{ 1176 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1177 qeth_set_allowed_threads(card, 0, 1); 1178 if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) 1179 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1180 qeth_qdio_clear_card(card, 0); 1181 qeth_clear_qdio_buffers(card); 1182} 1183 1184static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) 1185{ 1186 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1187 1188 if (card->dev) 1189 netif_device_detach(card->dev); 1190 qeth_set_allowed_threads(card, 0, 1); 1191 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 1192 if (gdev->state == CCWGROUP_OFFLINE) 1193 return 0; 1194 if (card->state == CARD_STATE_UP) { 1195 if (card->info.hwtrap) 1196 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); 1197 __qeth_l2_set_offline(card->gdev, 1); 1198 } else 1199 __qeth_l2_set_offline(card->gdev, 0); 1200 return 0; 1201} 1202 1203static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) 1204{ 1205 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1206 int rc = 0; 1207 1208 if (gdev->state == CCWGROUP_OFFLINE) 1209 goto out; 1210 1211 if (card->state == CARD_STATE_RECOVER) { 1212 rc = __qeth_l2_set_online(card->gdev, 1); 1213 if (rc) { 1214 rtnl_lock(); 1215 dev_close(card->dev); 1216 rtnl_unlock(); 1217 } 1218 } else 1219 rc = __qeth_l2_set_online(card->gdev, 0); 1220out: 1221 qeth_set_allowed_threads(card, 0xffffffff, 0); 1222 if (card->dev) 1223 netif_device_attach(card->dev); 1224 if (rc) 1225 dev_warn(&card->gdev->dev, "The qeth device driver " 1226 "failed to recover an error on the device\n"); 1227 return rc; 1228} 1229 1230struct ccwgroup_driver qeth_l2_ccwgroup_driver = { 1231 .probe = qeth_l2_probe_device, 1232 .remove = qeth_l2_remove_device, 1233 .set_online = qeth_l2_set_online, 1234 .set_offline = qeth_l2_set_offline, 1235 .shutdown = qeth_l2_shutdown, 1236 .freeze = qeth_l2_pm_suspend, 1237 .thaw = qeth_l2_pm_resume, 1238 .restore = qeth_l2_pm_resume, 1239}; 1240EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver); 1241 1242static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1243 struct qeth_cmd_buffer *iob) 1244{ 1245 unsigned long flags; 1246 int rc = 0; 1247 1248 QETH_CARD_TEXT(card, 5, "osndctrd"); 1249 1250 wait_event(card->wait_q, 1251 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1252 qeth_prepare_control_data(card, len, iob); 1253 QETH_CARD_TEXT(card, 6, "osnoirqp"); 1254 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1255 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1256 (addr_t) iob, 0, 0); 1257 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1258 if (rc) { 1259 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1260 "ccw_device_start rc = %i\n", rc); 1261 QETH_CARD_TEXT_(card, 2, " err%d", rc); 1262 qeth_release_buffer(iob->channel, iob); 1263 atomic_set(&card->write.irq_pending, 0); 1264 wake_up(&card->wait_q); 1265 } 1266 return rc; 1267} 1268 1269static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1270 struct qeth_cmd_buffer *iob, int data_len) 1271{ 1272 u16 s1, s2; 1273 1274 QETH_CARD_TEXT(card, 4, "osndipa"); 1275 1276 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1277 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1278 s2 = (u16)data_len; 1279 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1280 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1281 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1282 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1283 return qeth_osn_send_control_data(card, s1, iob); 1284} 1285 1286int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1287{ 1288 struct qeth_cmd_buffer *iob; 1289 struct qeth_card *card; 1290 int rc; 1291 1292 if (!dev) 1293 return -ENODEV; 1294 card = dev->ml_priv; 1295 if (!card) 1296 return -ENODEV; 1297 QETH_CARD_TEXT(card, 2, "osnsdmc"); 1298 if ((card->state != CARD_STATE_UP) && 1299 (card->state != CARD_STATE_SOFTSETUP)) 1300 return -ENODEV; 1301 iob = qeth_wait_for_buffer(&card->write); 1302 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1303 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1304 return rc; 1305} 1306EXPORT_SYMBOL(qeth_osn_assist); 1307 1308int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1309 int (*assist_cb)(struct net_device *, void *), 1310 int (*data_cb)(struct sk_buff *)) 1311{ 1312 struct qeth_card *card; 1313 1314 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1315 if (*dev == NULL) 1316 return -ENODEV; 1317 card = (*dev)->ml_priv; 1318 if (!card) 1319 return -ENODEV; 1320 QETH_CARD_TEXT(card, 2, "osnreg"); 1321 if ((assist_cb == NULL) || (data_cb == NULL)) 1322 return -EINVAL; 1323 card->osn_info.assist_cb = assist_cb; 1324 card->osn_info.data_cb = data_cb; 1325 return 0; 1326} 1327EXPORT_SYMBOL(qeth_osn_register); 1328 1329void qeth_osn_deregister(struct net_device *dev) 1330{ 1331 struct qeth_card *card; 1332 1333 if (!dev) 1334 return; 1335 card = dev->ml_priv; 1336 if (!card) 1337 return; 1338 QETH_CARD_TEXT(card, 2, "osndereg"); 1339 card->osn_info.assist_cb = NULL; 1340 card->osn_info.data_cb = NULL; 1341 return; 1342} 1343EXPORT_SYMBOL(qeth_osn_deregister); 1344 1345module_init(qeth_l2_init); 1346module_exit(qeth_l2_exit); 1347MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 1348MODULE_DESCRIPTION("qeth layer 2 discipline"); 1349MODULE_LICENSE("GPL"); 1350