1 /* 2 * drivers/s390/net/qeth_l2_main.c 3 * 4 * Copyright IBM Corp. 2007 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 #include <linux/module.h> 12 #include <linux/moduleparam.h> 13 #include <linux/string.h> 14 #include <linux/errno.h> 15 #include <linux/kernel.h> 16 #include <linux/etherdevice.h> 17 #include <linux/mii.h> 18 #include <linux/ip.h> 19 20 #include <asm/s390_rdev.h> 21 22 #include "qeth_core.h" 23 #include "qeth_core_offl.h" 24 25 static int qeth_l2_set_offline(struct ccwgroup_device *); 26 static int qeth_l2_stop(struct net_device *); 27 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *); 28 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *, 29 enum qeth_ipa_cmds, 30 int (*reply_cb) (struct qeth_card *, 31 struct qeth_reply*, 32 unsigned long)); 33 static void qeth_l2_set_multicast_list(struct net_device *); 34 static int qeth_l2_recover(void *); 35 36 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 37 { 38 struct qeth_card *card = netdev_priv(dev); 39 struct mii_ioctl_data *mii_data; 40 int rc = 0; 41 42 if (!card) 43 return -ENODEV; 44 45 if ((card->state != CARD_STATE_UP) && 46 (card->state != CARD_STATE_SOFTSETUP)) 47 return -ENODEV; 48 49 if (card->info.type == QETH_CARD_TYPE_OSN) 50 return -EPERM; 51 52 switch (cmd) { 53 case SIOC_QETH_ADP_SET_SNMP_CONTROL: 54 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); 55 break; 56 case SIOC_QETH_GET_CARD_TYPE: 57 if ((card->info.type == QETH_CARD_TYPE_OSAE) && 58 !card->info.guestlan) 59 return 1; 60 return 0; 61 break; 62 case SIOCGMIIPHY: 63 mii_data = if_mii(rq); 64 mii_data->phy_id = 0; 65 break; 66 case SIOCGMIIREG: 67 mii_data = if_mii(rq); 68 if (mii_data->phy_id != 0) 69 rc = -EINVAL; 70 else 71 mii_data->val_out = qeth_mdio_read(dev, 72 mii_data->phy_id, mii_data->reg_num); 73 break; 74 default: 75 rc = -EOPNOTSUPP; 76 } 77 if (rc) 78 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc); 79 return rc; 80 } 81 82 static int qeth_l2_verify_dev(struct net_device *dev) 83 { 84 struct qeth_card *card; 85 unsigned long flags; 86 int rc = 0; 87 88 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 89 list_for_each_entry(card, &qeth_core_card_list.list, list) { 90 if (card->dev == dev) { 91 rc = QETH_REAL_CARD; 92 break; 93 } 94 } 95 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 96 97 return rc; 98 } 99 100 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) 101 { 102 struct qeth_card *card; 103 struct net_device *ndev; 104 __u16 temp_dev_no; 105 unsigned long flags; 106 struct ccw_dev_id read_devid; 107 108 ndev = NULL; 109 memcpy(&temp_dev_no, read_dev_no, 2); 110 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 111 list_for_each_entry(card, &qeth_core_card_list.list, list) { 112 ccw_device_get_id(CARD_RDEV(card), &read_devid); 113 if (read_devid.devno == temp_dev_no) { 114 ndev = card->dev; 115 break; 116 } 117 } 118 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 119 return ndev; 120 } 121 122 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card, 123 struct qeth_reply *reply, 124 unsigned long data) 125 { 126 struct qeth_ipa_cmd *cmd; 127 __u8 *mac; 128 129 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb"); 130 cmd = (struct qeth_ipa_cmd *) data; 131 mac = &cmd->data.setdelmac.mac[0]; 132 /* MAC already registered, needed in couple/uncouple case */ 133 if (cmd->hdr.return_code == 0x2005) { 134 QETH_DBF_MESSAGE(2, "Group MAC %02x:%02x:%02x:%02x:%02x:%02x " 135 "already existing on %s \n", 136 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], 137 QETH_CARD_IFNAME(card)); 138 cmd->hdr.return_code = 0; 139 } 140 if (cmd->hdr.return_code) 141 QETH_DBF_MESSAGE(2, "Could not set group MAC " 142 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n", 143 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], 144 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_DBF_TEXT(TRACE, 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_DBF_TEXT(TRACE, 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 " 167 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n", 168 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], 169 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 170 return 0; 171 } 172 173 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) 174 { 175 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac"); 176 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC, 177 qeth_l2_send_delgroupmac_cb); 178 } 179 180 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac) 181 { 182 struct qeth_mc_mac *mc; 183 184 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC); 185 186 if (!mc) 187 return; 188 189 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN); 190 mc->mc_addrlen = OSA_ADDR_LEN; 191 192 if (!qeth_l2_send_setgroupmac(card, mac)) 193 list_add_tail(&mc->list, &card->mc_list); 194 else 195 kfree(mc); 196 } 197 198 static void qeth_l2_del_all_mc(struct qeth_card *card) 199 { 200 struct qeth_mc_mac *mc, *tmp; 201 202 spin_lock_bh(&card->mclock); 203 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) { 204 qeth_l2_send_delgroupmac(card, mc->mc_addr); 205 list_del(&mc->list); 206 kfree(mc); 207 } 208 spin_unlock_bh(&card->mclock); 209 } 210 211 static void qeth_l2_get_packet_type(struct qeth_card *card, 212 struct qeth_hdr *hdr, struct sk_buff *skb) 213 { 214 __u16 hdr_mac; 215 216 if (!memcmp(skb->data + QETH_HEADER_SIZE, 217 skb->dev->broadcast, 6)) { 218 /* broadcast? */ 219 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 220 return; 221 } 222 hdr_mac = *((__u16 *)skb->data); 223 /* tr multicast? */ 224 switch (card->info.link_type) { 225 case QETH_LINK_TYPE_HSTR: 226 case QETH_LINK_TYPE_LANE_TR: 227 if ((hdr_mac == QETH_TR_MAC_NC) || 228 (hdr_mac == QETH_TR_MAC_C)) 229 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 230 else 231 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 232 break; 233 /* eth or so multicast? */ 234 default: 235 if ((hdr_mac == QETH_ETH_MAC_V4) || 236 (hdr_mac == QETH_ETH_MAC_V6)) 237 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 238 else 239 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 240 } 241 } 242 243 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 244 struct sk_buff *skb, int ipv, int cast_type) 245 { 246 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)((skb->data) + 247 QETH_HEADER_SIZE); 248 249 memset(hdr, 0, sizeof(struct qeth_hdr)); 250 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 251 252 /* set byte byte 3 to casting flags */ 253 if (cast_type == RTN_MULTICAST) 254 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 255 else if (cast_type == RTN_BROADCAST) 256 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 257 else 258 qeth_l2_get_packet_type(card, hdr, skb); 259 260 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE; 261 /* VSWITCH relies on the VLAN 262 * information to be present in 263 * the QDIO header */ 264 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 265 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 266 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 267 } 268 } 269 270 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 271 struct qeth_reply *reply, unsigned long data) 272 { 273 struct qeth_ipa_cmd *cmd; 274 275 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb"); 276 cmd = (struct qeth_ipa_cmd *) data; 277 if (cmd->hdr.return_code) { 278 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. " 279 "Continuing\n", cmd->data.setdelvlan.vlan_id, 280 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 281 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command); 282 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card)); 283 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code); 284 } 285 return 0; 286 } 287 288 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 289 enum qeth_ipa_cmds ipacmd) 290 { 291 struct qeth_ipa_cmd *cmd; 292 struct qeth_cmd_buffer *iob; 293 294 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd); 295 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 296 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 297 cmd->data.setdelvlan.vlan_id = i; 298 return qeth_send_ipa_cmd(card, iob, 299 qeth_l2_send_setdelvlan_cb, NULL); 300 } 301 302 static void qeth_l2_process_vlans(struct qeth_card *card, int clear) 303 { 304 struct qeth_vlan_vid *id; 305 QETH_DBF_TEXT(TRACE, 3, "L2prcvln"); 306 spin_lock_bh(&card->vlanlock); 307 list_for_each_entry(id, &card->vid_list, list) { 308 if (clear) 309 qeth_l2_send_setdelvlan(card, id->vid, 310 IPA_CMD_DELVLAN); 311 else 312 qeth_l2_send_setdelvlan(card, id->vid, 313 IPA_CMD_SETVLAN); 314 } 315 spin_unlock_bh(&card->vlanlock); 316 } 317 318 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) 319 { 320 struct qeth_card *card = netdev_priv(dev); 321 struct qeth_vlan_vid *id; 322 323 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid); 324 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 325 if (id) { 326 id->vid = vid; 327 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 328 spin_lock_bh(&card->vlanlock); 329 list_add_tail(&id->list, &card->vid_list); 330 spin_unlock_bh(&card->vlanlock); 331 } 332 } 333 334 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) 335 { 336 struct qeth_vlan_vid *id, *tmpid = NULL; 337 struct qeth_card *card = netdev_priv(dev); 338 339 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid); 340 spin_lock_bh(&card->vlanlock); 341 list_for_each_entry(id, &card->vid_list, list) { 342 if (id->vid == vid) { 343 list_del(&id->list); 344 tmpid = id; 345 break; 346 } 347 } 348 spin_unlock_bh(&card->vlanlock); 349 if (tmpid) { 350 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); 351 kfree(tmpid); 352 } 353 qeth_l2_set_multicast_list(card->dev); 354 } 355 356 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 357 { 358 int rc = 0; 359 360 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 361 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 362 363 qeth_set_allowed_threads(card, 0, 1); 364 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) 365 return -ERESTARTSYS; 366 if (card->read.state == CH_STATE_UP && 367 card->write.state == CH_STATE_UP && 368 (card->state == CARD_STATE_UP)) { 369 if (recovery_mode && 370 card->info.type != QETH_CARD_TYPE_OSN) { 371 qeth_l2_stop(card->dev); 372 } else { 373 rtnl_lock(); 374 dev_close(card->dev); 375 rtnl_unlock(); 376 } 377 if (!card->use_hard_stop) { 378 __u8 *mac = &card->dev->dev_addr[0]; 379 rc = qeth_l2_send_delmac(card, mac); 380 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc); 381 } 382 card->state = CARD_STATE_SOFTSETUP; 383 } 384 if (card->state == CARD_STATE_SOFTSETUP) { 385 qeth_l2_process_vlans(card, 1); 386 qeth_l2_del_all_mc(card); 387 qeth_clear_ipacmd_list(card); 388 card->state = CARD_STATE_HARDSETUP; 389 } 390 if (card->state == CARD_STATE_HARDSETUP) { 391 qeth_qdio_clear_card(card, 0); 392 qeth_clear_qdio_buffers(card); 393 qeth_clear_working_pool_list(card); 394 card->state = CARD_STATE_DOWN; 395 } 396 if (card->state == CARD_STATE_DOWN) { 397 qeth_clear_cmd_buffers(&card->read); 398 qeth_clear_cmd_buffers(&card->write); 399 } 400 card->use_hard_stop = 0; 401 return rc; 402 } 403 404 static void qeth_l2_process_inbound_buffer(struct qeth_card *card, 405 struct qeth_qdio_buffer *buf, int index) 406 { 407 struct qdio_buffer_element *element; 408 struct sk_buff *skb; 409 struct qeth_hdr *hdr; 410 int offset; 411 unsigned int len; 412 413 /* get first element of current buffer */ 414 element = (struct qdio_buffer_element *)&buf->buffer->element[0]; 415 offset = 0; 416 if (card->options.performance_stats) 417 card->perf_stats.bufs_rec++; 418 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element, 419 &offset, &hdr))) { 420 skb->dev = card->dev; 421 /* is device UP ? */ 422 if (!(card->dev->flags & IFF_UP)) { 423 dev_kfree_skb_any(skb); 424 continue; 425 } 426 427 switch (hdr->hdr.l2.id) { 428 case QETH_HEADER_TYPE_LAYER2: 429 skb->pkt_type = PACKET_HOST; 430 skb->protocol = eth_type_trans(skb, skb->dev); 431 if (card->options.checksum_type == NO_CHECKSUMMING) 432 skb->ip_summed = CHECKSUM_UNNECESSARY; 433 else 434 skb->ip_summed = CHECKSUM_NONE; 435 if (skb->protocol == htons(ETH_P_802_2)) 436 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 437 len = skb->len; 438 netif_rx(skb); 439 break; 440 case QETH_HEADER_TYPE_OSN: 441 skb_push(skb, sizeof(struct qeth_hdr)); 442 skb_copy_to_linear_data(skb, hdr, 443 sizeof(struct qeth_hdr)); 444 len = skb->len; 445 card->osn_info.data_cb(skb); 446 break; 447 default: 448 dev_kfree_skb_any(skb); 449 QETH_DBF_TEXT(TRACE, 3, "inbunkno"); 450 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 451 continue; 452 } 453 card->dev->last_rx = jiffies; 454 card->stats.rx_packets++; 455 card->stats.rx_bytes += len; 456 } 457 } 458 459 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 460 enum qeth_ipa_cmds ipacmd, 461 int (*reply_cb) (struct qeth_card *, 462 struct qeth_reply*, 463 unsigned long)) 464 { 465 struct qeth_ipa_cmd *cmd; 466 struct qeth_cmd_buffer *iob; 467 468 QETH_DBF_TEXT(TRACE, 2, "L2sdmac"); 469 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 470 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 471 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 472 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 473 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL); 474 } 475 476 static int qeth_l2_send_setmac_cb(struct qeth_card *card, 477 struct qeth_reply *reply, 478 unsigned long data) 479 { 480 struct qeth_ipa_cmd *cmd; 481 482 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb"); 483 cmd = (struct qeth_ipa_cmd *) data; 484 if (cmd->hdr.return_code) { 485 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code); 486 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 487 cmd->hdr.return_code = -EIO; 488 } else { 489 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 490 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac, 491 OSA_ADDR_LEN); 492 PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x " 493 "successfully registered on device %s\n", 494 card->dev->dev_addr[0], card->dev->dev_addr[1], 495 card->dev->dev_addr[2], card->dev->dev_addr[3], 496 card->dev->dev_addr[4], card->dev->dev_addr[5], 497 card->dev->name); 498 } 499 return 0; 500 } 501 502 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 503 { 504 QETH_DBF_TEXT(TRACE, 2, "L2Setmac"); 505 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC, 506 qeth_l2_send_setmac_cb); 507 } 508 509 static int qeth_l2_send_delmac_cb(struct qeth_card *card, 510 struct qeth_reply *reply, 511 unsigned long data) 512 { 513 struct qeth_ipa_cmd *cmd; 514 515 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb"); 516 cmd = (struct qeth_ipa_cmd *) data; 517 if (cmd->hdr.return_code) { 518 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code); 519 cmd->hdr.return_code = -EIO; 520 return 0; 521 } 522 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 523 524 return 0; 525 } 526 527 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 528 { 529 QETH_DBF_TEXT(TRACE, 2, "L2Delmac"); 530 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 531 return 0; 532 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC, 533 qeth_l2_send_delmac_cb); 534 } 535 536 static int qeth_l2_request_initial_mac(struct qeth_card *card) 537 { 538 int rc = 0; 539 char vendor_pre[] = {0x02, 0x00, 0x00}; 540 541 QETH_DBF_TEXT(SETUP, 2, "doL2init"); 542 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 543 544 rc = qeth_query_setadapterparms(card); 545 if (rc) { 546 QETH_DBF_MESSAGE(2, "could not query adapter parameters on " 547 "device %s: x%x\n", CARD_BUS_ID(card), rc); 548 } 549 550 if (card->info.guestlan) { 551 rc = qeth_setadpparms_change_macaddr(card); 552 if (rc) { 553 QETH_DBF_MESSAGE(2, "couldn't get MAC address on " 554 "device %s: x%x\n", CARD_BUS_ID(card), rc); 555 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 556 return rc; 557 } 558 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN); 559 } else { 560 random_ether_addr(card->dev->dev_addr); 561 memcpy(card->dev->dev_addr, vendor_pre, 3); 562 } 563 return 0; 564 } 565 566 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 567 { 568 struct sockaddr *addr = p; 569 struct qeth_card *card = netdev_priv(dev); 570 int rc = 0; 571 572 QETH_DBF_TEXT(TRACE, 3, "setmac"); 573 574 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { 575 QETH_DBF_TEXT(TRACE, 3, "setmcINV"); 576 return -EOPNOTSUPP; 577 } 578 579 if (card->info.type == QETH_CARD_TYPE_OSN) { 580 QETH_DBF_TEXT(TRACE, 3, "setmcOSN"); 581 return -EOPNOTSUPP; 582 } 583 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card)); 584 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN); 585 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 586 if (!rc) 587 rc = qeth_l2_send_setmac(card, addr->sa_data); 588 return rc; 589 } 590 591 static void qeth_l2_set_multicast_list(struct net_device *dev) 592 { 593 struct qeth_card *card = netdev_priv(dev); 594 struct dev_mc_list *dm; 595 596 if (card->info.type == QETH_CARD_TYPE_OSN) 597 return ; 598 599 QETH_DBF_TEXT(TRACE, 3, "setmulti"); 600 qeth_l2_del_all_mc(card); 601 spin_lock_bh(&card->mclock); 602 for (dm = dev->mc_list; dm; dm = dm->next) 603 qeth_l2_add_mc(card, dm->dmi_addr); 604 spin_unlock_bh(&card->mclock); 605 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 606 return; 607 qeth_setadp_promisc_mode(card); 608 } 609 610 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 611 { 612 int rc; 613 struct qeth_hdr *hdr = NULL; 614 int elements = 0; 615 struct qeth_card *card = netdev_priv(dev); 616 struct sk_buff *new_skb = skb; 617 int ipv = qeth_get_ip_version(skb); 618 int cast_type = qeth_get_cast_type(card, skb); 619 struct qeth_qdio_out_q *queue = card->qdio.out_qs 620 [qeth_get_priority_queue(card, skb, ipv, cast_type)]; 621 int tx_bytes = skb->len; 622 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO; 623 struct qeth_eddp_context *ctx = NULL; 624 625 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 626 card->stats.tx_carrier_errors++; 627 goto tx_drop; 628 } 629 630 if ((card->info.type == QETH_CARD_TYPE_OSN) && 631 (skb->protocol == htons(ETH_P_IPV6))) 632 goto tx_drop; 633 634 if (card->options.performance_stats) { 635 card->perf_stats.outbound_cnt++; 636 card->perf_stats.outbound_start_time = qeth_get_micros(); 637 } 638 netif_stop_queue(dev); 639 640 if (skb_is_gso(skb)) 641 large_send = QETH_LARGE_SEND_EDDP; 642 643 if (card->info.type == QETH_CARD_TYPE_OSN) 644 hdr = (struct qeth_hdr *)skb->data; 645 else { 646 /* create a clone with writeable headroom */ 647 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr)); 648 if (!new_skb) 649 goto tx_drop; 650 hdr = (struct qeth_hdr *)skb_push(new_skb, 651 sizeof(struct qeth_hdr)); 652 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type); 653 } 654 655 if (large_send == QETH_LARGE_SEND_EDDP) { 656 ctx = qeth_eddp_create_context(card, new_skb, hdr, 657 skb->sk->sk_protocol); 658 if (ctx == NULL) { 659 QETH_DBF_MESSAGE(2, "could not create eddp context\n"); 660 goto tx_drop; 661 } 662 } else { 663 elements = qeth_get_elements_no(card, (void *)hdr, new_skb, 0); 664 if (!elements) 665 goto tx_drop; 666 } 667 668 if ((large_send == QETH_LARGE_SEND_NO) && 669 (skb->ip_summed == CHECKSUM_PARTIAL)) 670 qeth_tx_csum(new_skb); 671 672 if (card->info.type != QETH_CARD_TYPE_IQD) 673 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 674 elements, ctx); 675 else 676 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 677 elements, ctx); 678 if (!rc) { 679 card->stats.tx_packets++; 680 card->stats.tx_bytes += tx_bytes; 681 if (new_skb != skb) 682 dev_kfree_skb_any(skb); 683 if (card->options.performance_stats) { 684 if (large_send != QETH_LARGE_SEND_NO) { 685 card->perf_stats.large_send_bytes += tx_bytes; 686 card->perf_stats.large_send_cnt++; 687 } 688 if (skb_shinfo(new_skb)->nr_frags > 0) { 689 card->perf_stats.sg_skbs_sent++; 690 /* nr_frags + skb->data */ 691 card->perf_stats.sg_frags_sent += 692 skb_shinfo(new_skb)->nr_frags + 1; 693 } 694 } 695 696 if (ctx != NULL) { 697 qeth_eddp_put_context(ctx); 698 dev_kfree_skb_any(new_skb); 699 } 700 } else { 701 if (ctx != NULL) 702 qeth_eddp_put_context(ctx); 703 704 if (rc == -EBUSY) { 705 if (new_skb != skb) 706 dev_kfree_skb_any(new_skb); 707 return NETDEV_TX_BUSY; 708 } else 709 goto tx_drop; 710 } 711 712 netif_wake_queue(dev); 713 if (card->options.performance_stats) 714 card->perf_stats.outbound_time += qeth_get_micros() - 715 card->perf_stats.outbound_start_time; 716 return rc; 717 718 tx_drop: 719 card->stats.tx_dropped++; 720 card->stats.tx_errors++; 721 if ((new_skb != skb) && new_skb) 722 dev_kfree_skb_any(new_skb); 723 dev_kfree_skb_any(skb); 724 netif_wake_queue(dev); 725 return NETDEV_TX_OK; 726 } 727 728 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev, 729 unsigned int qdio_err, unsigned int queue, 730 int first_element, int count, unsigned long card_ptr) 731 { 732 struct net_device *net_dev; 733 struct qeth_card *card; 734 struct qeth_qdio_buffer *buffer; 735 int index; 736 int i; 737 738 card = (struct qeth_card *) card_ptr; 739 net_dev = card->dev; 740 if (card->options.performance_stats) { 741 card->perf_stats.inbound_cnt++; 742 card->perf_stats.inbound_start_time = qeth_get_micros(); 743 } 744 if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) { 745 QETH_DBF_TEXT(TRACE, 1, "qdinchk"); 746 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card)); 747 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element, 748 count); 749 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue); 750 qeth_schedule_recovery(card); 751 return; 752 } 753 for (i = first_element; i < (first_element + count); ++i) { 754 index = i % QDIO_MAX_BUFFERS_PER_Q; 755 buffer = &card->qdio.in_q->bufs[index]; 756 if (!(qdio_err && 757 qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr"))) 758 qeth_l2_process_inbound_buffer(card, buffer, index); 759 /* clear buffer and give back to hardware */ 760 qeth_put_buffer_pool_entry(card, buffer->pool_entry); 761 qeth_queue_input_buffer(card, index); 762 } 763 if (card->options.performance_stats) 764 card->perf_stats.inbound_time += qeth_get_micros() - 765 card->perf_stats.inbound_start_time; 766 } 767 768 static int qeth_l2_open(struct net_device *dev) 769 { 770 struct qeth_card *card = netdev_priv(dev); 771 772 QETH_DBF_TEXT(TRACE, 4, "qethopen"); 773 if (card->state != CARD_STATE_SOFTSETUP) 774 return -ENODEV; 775 776 if ((card->info.type != QETH_CARD_TYPE_OSN) && 777 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 778 QETH_DBF_TEXT(TRACE, 4, "nomacadr"); 779 return -EPERM; 780 } 781 card->data.state = CH_STATE_UP; 782 card->state = CARD_STATE_UP; 783 card->dev->flags |= IFF_UP; 784 netif_start_queue(dev); 785 786 if (!card->lan_online && netif_carrier_ok(dev)) 787 netif_carrier_off(dev); 788 return 0; 789 } 790 791 792 static int qeth_l2_stop(struct net_device *dev) 793 { 794 struct qeth_card *card = netdev_priv(dev); 795 796 QETH_DBF_TEXT(TRACE, 4, "qethstop"); 797 netif_tx_disable(dev); 798 card->dev->flags &= ~IFF_UP; 799 if (card->state == CARD_STATE_UP) 800 card->state = CARD_STATE_SOFTSETUP; 801 return 0; 802 } 803 804 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 805 { 806 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 807 808 INIT_LIST_HEAD(&card->vid_list); 809 INIT_LIST_HEAD(&card->mc_list); 810 card->options.layer2 = 1; 811 card->discipline.input_handler = (qdio_handler_t *) 812 qeth_l2_qdio_input_handler; 813 card->discipline.output_handler = (qdio_handler_t *) 814 qeth_qdio_output_handler; 815 card->discipline.recover = qeth_l2_recover; 816 return 0; 817 } 818 819 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 820 { 821 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 822 823 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 824 825 if (cgdev->state == CCWGROUP_ONLINE) { 826 card->use_hard_stop = 1; 827 qeth_l2_set_offline(cgdev); 828 } 829 830 if (card->dev) { 831 unregister_netdev(card->dev); 832 card->dev = NULL; 833 } 834 835 qeth_l2_del_all_mc(card); 836 return; 837 } 838 839 static int qeth_l2_ethtool_set_tso(struct net_device *dev, u32 data) 840 { 841 struct qeth_card *card = netdev_priv(dev); 842 843 if (data) { 844 if (card->options.large_send == QETH_LARGE_SEND_NO) { 845 card->options.large_send = QETH_LARGE_SEND_EDDP; 846 dev->features |= NETIF_F_TSO; 847 } 848 } else { 849 dev->features &= ~NETIF_F_TSO; 850 card->options.large_send = QETH_LARGE_SEND_NO; 851 } 852 return 0; 853 } 854 855 static struct ethtool_ops qeth_l2_ethtool_ops = { 856 .get_link = ethtool_op_get_link, 857 .get_tx_csum = ethtool_op_get_tx_csum, 858 .set_tx_csum = ethtool_op_set_tx_hw_csum, 859 .get_sg = ethtool_op_get_sg, 860 .set_sg = ethtool_op_set_sg, 861 .get_tso = ethtool_op_get_tso, 862 .set_tso = qeth_l2_ethtool_set_tso, 863 .get_strings = qeth_core_get_strings, 864 .get_ethtool_stats = qeth_core_get_ethtool_stats, 865 .get_stats_count = qeth_core_get_stats_count, 866 .get_drvinfo = qeth_core_get_drvinfo, 867 .get_settings = qeth_core_ethtool_get_settings, 868 }; 869 870 static struct ethtool_ops qeth_l2_osn_ops = { 871 .get_strings = qeth_core_get_strings, 872 .get_ethtool_stats = qeth_core_get_ethtool_stats, 873 .get_stats_count = qeth_core_get_stats_count, 874 .get_drvinfo = qeth_core_get_drvinfo, 875 }; 876 877 static int qeth_l2_setup_netdev(struct qeth_card *card) 878 { 879 switch (card->info.type) { 880 case QETH_CARD_TYPE_OSAE: 881 card->dev = alloc_etherdev(0); 882 break; 883 case QETH_CARD_TYPE_IQD: 884 card->dev = alloc_netdev(0, "hsi%d", ether_setup); 885 break; 886 case QETH_CARD_TYPE_OSN: 887 card->dev = alloc_netdev(0, "osn%d", ether_setup); 888 card->dev->flags |= IFF_NOARP; 889 break; 890 default: 891 card->dev = alloc_etherdev(0); 892 } 893 894 if (!card->dev) 895 return -ENODEV; 896 897 card->dev->priv = card; 898 card->dev->tx_timeout = &qeth_tx_timeout; 899 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 900 card->dev->open = qeth_l2_open; 901 card->dev->stop = qeth_l2_stop; 902 card->dev->hard_start_xmit = qeth_l2_hard_start_xmit; 903 card->dev->do_ioctl = qeth_l2_do_ioctl; 904 card->dev->get_stats = qeth_get_stats; 905 card->dev->change_mtu = qeth_change_mtu; 906 card->dev->set_multicast_list = qeth_l2_set_multicast_list; 907 card->dev->vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid; 908 card->dev->vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid; 909 card->dev->set_mac_address = qeth_l2_set_mac_address; 910 card->dev->mtu = card->info.initial_mtu; 911 if (card->info.type != QETH_CARD_TYPE_OSN) 912 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops); 913 else 914 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops); 915 card->dev->features |= NETIF_F_HW_VLAN_FILTER; 916 card->info.broadcast_capable = 1; 917 qeth_l2_request_initial_mac(card); 918 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 919 return register_netdev(card->dev); 920 } 921 922 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 923 { 924 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 925 int rc = 0; 926 enum qeth_card_states recover_flag; 927 928 BUG_ON(!card); 929 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 930 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 931 932 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1); 933 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) { 934 PRINT_WARN("set_online of card %s interrupted by user!\n", 935 CARD_BUS_ID(card)); 936 return -ERESTARTSYS; 937 } 938 939 recover_flag = card->state; 940 rc = ccw_device_set_online(CARD_RDEV(card)); 941 if (rc) { 942 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 943 return -EIO; 944 } 945 rc = ccw_device_set_online(CARD_WDEV(card)); 946 if (rc) { 947 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 948 return -EIO; 949 } 950 rc = ccw_device_set_online(CARD_DDEV(card)); 951 if (rc) { 952 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 953 return -EIO; 954 } 955 956 rc = qeth_core_hardsetup_card(card); 957 if (rc) { 958 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 959 goto out_remove; 960 } 961 962 if (!card->dev && qeth_l2_setup_netdev(card)) 963 goto out_remove; 964 965 if (card->info.type != QETH_CARD_TYPE_OSN) 966 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 967 968 card->state = CARD_STATE_HARDSETUP; 969 qeth_print_status_message(card); 970 971 /* softsetup */ 972 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 973 974 rc = qeth_send_startlan(card); 975 if (rc) { 976 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 977 if (rc == 0xe080) { 978 PRINT_WARN("LAN on card %s if offline! " 979 "Waiting for STARTLAN from card.\n", 980 CARD_BUS_ID(card)); 981 card->lan_online = 0; 982 } 983 return rc; 984 } else 985 card->lan_online = 1; 986 987 if (card->info.type != QETH_CARD_TYPE_OSN) { 988 qeth_set_large_send(card, card->options.large_send); 989 qeth_l2_process_vlans(card, 0); 990 } 991 992 netif_tx_disable(card->dev); 993 994 rc = qeth_init_qdio_queues(card); 995 if (rc) { 996 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 997 goto out_remove; 998 } 999 card->state = CARD_STATE_SOFTSETUP; 1000 netif_carrier_on(card->dev); 1001 1002 qeth_set_allowed_threads(card, 0xffffffff, 0); 1003 if (recover_flag == CARD_STATE_RECOVER) { 1004 if (recovery_mode && 1005 card->info.type != QETH_CARD_TYPE_OSN) { 1006 qeth_l2_open(card->dev); 1007 } else { 1008 rtnl_lock(); 1009 dev_open(card->dev); 1010 rtnl_unlock(); 1011 } 1012 /* this also sets saved unicast addresses */ 1013 qeth_l2_set_multicast_list(card->dev); 1014 } 1015 /* let user_space know that device is online */ 1016 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1017 return 0; 1018 out_remove: 1019 card->use_hard_stop = 1; 1020 qeth_l2_stop_card(card, 0); 1021 ccw_device_set_offline(CARD_DDEV(card)); 1022 ccw_device_set_offline(CARD_WDEV(card)); 1023 ccw_device_set_offline(CARD_RDEV(card)); 1024 if (recover_flag == CARD_STATE_RECOVER) 1025 card->state = CARD_STATE_RECOVER; 1026 else 1027 card->state = CARD_STATE_DOWN; 1028 return -ENODEV; 1029 } 1030 1031 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1032 { 1033 return __qeth_l2_set_online(gdev, 0); 1034 } 1035 1036 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1037 int recovery_mode) 1038 { 1039 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1040 int rc = 0, rc2 = 0, rc3 = 0; 1041 enum qeth_card_states recover_flag; 1042 1043 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1044 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1045 1046 if (card->dev && netif_carrier_ok(card->dev)) 1047 netif_carrier_off(card->dev); 1048 recover_flag = card->state; 1049 if (qeth_l2_stop_card(card, recovery_mode) == -ERESTARTSYS) { 1050 PRINT_WARN("Stopping card %s interrupted by user!\n", 1051 CARD_BUS_ID(card)); 1052 return -ERESTARTSYS; 1053 } 1054 rc = ccw_device_set_offline(CARD_DDEV(card)); 1055 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1056 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1057 if (!rc) 1058 rc = (rc2) ? rc2 : rc3; 1059 if (rc) 1060 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1061 if (recover_flag == CARD_STATE_UP) 1062 card->state = CARD_STATE_RECOVER; 1063 /* let user_space know that device is offline */ 1064 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1065 return 0; 1066 } 1067 1068 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1069 { 1070 return __qeth_l2_set_offline(cgdev, 0); 1071 } 1072 1073 static int qeth_l2_recover(void *ptr) 1074 { 1075 struct qeth_card *card; 1076 int rc = 0; 1077 1078 card = (struct qeth_card *) ptr; 1079 QETH_DBF_TEXT(TRACE, 2, "recover1"); 1080 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *)); 1081 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1082 return 0; 1083 QETH_DBF_TEXT(TRACE, 2, "recover2"); 1084 PRINT_WARN("Recovery of device %s started ...\n", 1085 CARD_BUS_ID(card)); 1086 card->use_hard_stop = 1; 1087 __qeth_l2_set_offline(card->gdev, 1); 1088 rc = __qeth_l2_set_online(card->gdev, 1); 1089 /* don't run another scheduled recovery */ 1090 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1091 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1092 if (!rc) 1093 PRINT_INFO("Device %s successfully recovered!\n", 1094 CARD_BUS_ID(card)); 1095 else 1096 PRINT_INFO("Device %s could not be recovered!\n", 1097 CARD_BUS_ID(card)); 1098 return 0; 1099 } 1100 1101 static int __init qeth_l2_init(void) 1102 { 1103 PRINT_INFO("register layer 2 discipline\n"); 1104 return 0; 1105 } 1106 1107 static void __exit qeth_l2_exit(void) 1108 { 1109 PRINT_INFO("unregister layer 2 discipline\n"); 1110 } 1111 1112 static void qeth_l2_shutdown(struct ccwgroup_device *gdev) 1113 { 1114 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1115 qeth_qdio_clear_card(card, 0); 1116 qeth_clear_qdio_buffers(card); 1117 } 1118 1119 struct ccwgroup_driver qeth_l2_ccwgroup_driver = { 1120 .probe = qeth_l2_probe_device, 1121 .remove = qeth_l2_remove_device, 1122 .set_online = qeth_l2_set_online, 1123 .set_offline = qeth_l2_set_offline, 1124 .shutdown = qeth_l2_shutdown, 1125 }; 1126 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver); 1127 1128 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1129 struct qeth_cmd_buffer *iob) 1130 { 1131 unsigned long flags; 1132 int rc = 0; 1133 1134 QETH_DBF_TEXT(TRACE, 5, "osndctrd"); 1135 1136 wait_event(card->wait_q, 1137 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1138 qeth_prepare_control_data(card, len, iob); 1139 QETH_DBF_TEXT(TRACE, 6, "osnoirqp"); 1140 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1141 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1142 (addr_t) iob, 0, 0); 1143 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1144 if (rc) { 1145 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " 1146 "ccw_device_start rc = %i\n", rc); 1147 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc); 1148 qeth_release_buffer(iob->channel, iob); 1149 atomic_set(&card->write.irq_pending, 0); 1150 wake_up(&card->wait_q); 1151 } 1152 return rc; 1153 } 1154 1155 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1156 struct qeth_cmd_buffer *iob, int data_len) 1157 { 1158 u16 s1, s2; 1159 1160 QETH_DBF_TEXT(TRACE, 4, "osndipa"); 1161 1162 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1163 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1164 s2 = (u16)data_len; 1165 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1166 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1167 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1168 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1169 return qeth_osn_send_control_data(card, s1, iob); 1170 } 1171 1172 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1173 { 1174 struct qeth_cmd_buffer *iob; 1175 struct qeth_card *card; 1176 int rc; 1177 1178 QETH_DBF_TEXT(TRACE, 2, "osnsdmc"); 1179 if (!dev) 1180 return -ENODEV; 1181 card = netdev_priv(dev); 1182 if (!card) 1183 return -ENODEV; 1184 if ((card->state != CARD_STATE_UP) && 1185 (card->state != CARD_STATE_SOFTSETUP)) 1186 return -ENODEV; 1187 iob = qeth_wait_for_buffer(&card->write); 1188 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1189 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1190 return rc; 1191 } 1192 EXPORT_SYMBOL(qeth_osn_assist); 1193 1194 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1195 int (*assist_cb)(struct net_device *, void *), 1196 int (*data_cb)(struct sk_buff *)) 1197 { 1198 struct qeth_card *card; 1199 1200 QETH_DBF_TEXT(TRACE, 2, "osnreg"); 1201 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1202 if (*dev == NULL) 1203 return -ENODEV; 1204 card = netdev_priv(*dev); 1205 if (!card) 1206 return -ENODEV; 1207 if ((assist_cb == NULL) || (data_cb == NULL)) 1208 return -EINVAL; 1209 card->osn_info.assist_cb = assist_cb; 1210 card->osn_info.data_cb = data_cb; 1211 return 0; 1212 } 1213 EXPORT_SYMBOL(qeth_osn_register); 1214 1215 void qeth_osn_deregister(struct net_device *dev) 1216 { 1217 struct qeth_card *card; 1218 1219 QETH_DBF_TEXT(TRACE, 2, "osndereg"); 1220 if (!dev) 1221 return; 1222 card = netdev_priv(dev); 1223 if (!card) 1224 return; 1225 card->osn_info.assist_cb = NULL; 1226 card->osn_info.data_cb = NULL; 1227 return; 1228 } 1229 EXPORT_SYMBOL(qeth_osn_deregister); 1230 1231 module_init(qeth_l2_init); 1232 module_exit(qeth_l2_exit); 1233 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 1234 MODULE_DESCRIPTION("qeth layer 2 discipline"); 1235 MODULE_LICENSE("GPL"); 1236