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 unsigned char *readno; 105 __u16 temp_dev_no, card_dev_no; 106 char *endp; 107 unsigned long flags; 108 109 ndev = NULL; 110 memcpy(&temp_dev_no, read_dev_no, 2); 111 read_lock_irqsave(&qeth_core_card_list.rwlock, flags); 112 list_for_each_entry(card, &qeth_core_card_list.list, list) { 113 readno = CARD_RDEV_ID(card); 114 readno += (strlen(readno) - 4); 115 card_dev_no = simple_strtoul(readno, &endp, 16); 116 if (card_dev_no == temp_dev_no) { 117 ndev = card->dev; 118 break; 119 } 120 } 121 read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); 122 return ndev; 123 } 124 125 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card, 126 struct qeth_reply *reply, 127 unsigned long data) 128 { 129 struct qeth_ipa_cmd *cmd; 130 __u8 *mac; 131 132 QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb"); 133 cmd = (struct qeth_ipa_cmd *) data; 134 mac = &cmd->data.setdelmac.mac[0]; 135 /* MAC already registered, needed in couple/uncouple case */ 136 if (cmd->hdr.return_code == 0x2005) { 137 PRINT_WARN("Group MAC %02x:%02x:%02x:%02x:%02x:%02x " \ 138 "already existing on %s \n", 139 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], 140 QETH_CARD_IFNAME(card)); 141 cmd->hdr.return_code = 0; 142 } 143 if (cmd->hdr.return_code) 144 PRINT_ERR("Could not set group MAC " \ 145 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n", 146 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], 147 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 148 return 0; 149 } 150 151 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) 152 { 153 QETH_DBF_TEXT(TRACE, 2, "L2Sgmac"); 154 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC, 155 qeth_l2_send_setgroupmac_cb); 156 } 157 158 static 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_DBF_TEXT(TRACE, 2, "L2Dgmacb"); 166 cmd = (struct qeth_ipa_cmd *) data; 167 mac = &cmd->data.setdelmac.mac[0]; 168 if (cmd->hdr.return_code) 169 PRINT_ERR("Could not delete group MAC " \ 170 "%02x:%02x:%02x:%02x:%02x:%02x on %s: %x\n", 171 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], 172 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 173 return 0; 174 } 175 176 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac) 177 { 178 QETH_DBF_TEXT(TRACE, 2, "L2Dgmac"); 179 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC, 180 qeth_l2_send_delgroupmac_cb); 181 } 182 183 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac) 184 { 185 struct qeth_mc_mac *mc; 186 187 mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC); 188 189 if (!mc) { 190 PRINT_ERR("no mem vor mc mac address\n"); 191 return; 192 } 193 194 memcpy(mc->mc_addr, mac, OSA_ADDR_LEN); 195 mc->mc_addrlen = OSA_ADDR_LEN; 196 197 if (!qeth_l2_send_setgroupmac(card, mac)) 198 list_add_tail(&mc->list, &card->mc_list); 199 else 200 kfree(mc); 201 } 202 203 static void qeth_l2_del_all_mc(struct qeth_card *card) 204 { 205 struct qeth_mc_mac *mc, *tmp; 206 207 spin_lock_bh(&card->mclock); 208 list_for_each_entry_safe(mc, tmp, &card->mc_list, list) { 209 qeth_l2_send_delgroupmac(card, mc->mc_addr); 210 list_del(&mc->list); 211 kfree(mc); 212 } 213 spin_unlock_bh(&card->mclock); 214 } 215 216 static void qeth_l2_get_packet_type(struct qeth_card *card, 217 struct qeth_hdr *hdr, struct sk_buff *skb) 218 { 219 __u16 hdr_mac; 220 221 if (!memcmp(skb->data + QETH_HEADER_SIZE, 222 skb->dev->broadcast, 6)) { 223 /* broadcast? */ 224 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 225 return; 226 } 227 hdr_mac = *((__u16 *)skb->data); 228 /* tr multicast? */ 229 switch (card->info.link_type) { 230 case QETH_LINK_TYPE_HSTR: 231 case QETH_LINK_TYPE_LANE_TR: 232 if ((hdr_mac == QETH_TR_MAC_NC) || 233 (hdr_mac == QETH_TR_MAC_C)) 234 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 235 else 236 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 237 break; 238 /* eth or so multicast? */ 239 default: 240 if ((hdr_mac == QETH_ETH_MAC_V4) || 241 (hdr_mac == QETH_ETH_MAC_V6)) 242 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 243 else 244 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; 245 } 246 } 247 248 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, 249 struct sk_buff *skb, int ipv, int cast_type) 250 { 251 struct vlan_ethhdr *veth = (struct vlan_ethhdr *)((skb->data) + 252 QETH_HEADER_SIZE); 253 254 memset(hdr, 0, sizeof(struct qeth_hdr)); 255 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; 256 257 /* set byte byte 3 to casting flags */ 258 if (cast_type == RTN_MULTICAST) 259 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; 260 else if (cast_type == RTN_BROADCAST) 261 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; 262 else 263 qeth_l2_get_packet_type(card, hdr, skb); 264 265 hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE; 266 /* VSWITCH relies on the VLAN 267 * information to be present in 268 * the QDIO header */ 269 if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { 270 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; 271 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); 272 } 273 } 274 275 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, 276 struct qeth_reply *reply, unsigned long data) 277 { 278 struct qeth_ipa_cmd *cmd; 279 280 QETH_DBF_TEXT(TRACE, 2, "L2sdvcb"); 281 cmd = (struct qeth_ipa_cmd *) data; 282 if (cmd->hdr.return_code) { 283 PRINT_ERR("Error in processing VLAN %i on %s: 0x%x. " 284 "Continuing\n", cmd->data.setdelvlan.vlan_id, 285 QETH_CARD_IFNAME(card), cmd->hdr.return_code); 286 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command); 287 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card)); 288 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code); 289 } 290 return 0; 291 } 292 293 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, 294 enum qeth_ipa_cmds ipacmd) 295 { 296 struct qeth_ipa_cmd *cmd; 297 struct qeth_cmd_buffer *iob; 298 299 QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd); 300 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 301 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 302 cmd->data.setdelvlan.vlan_id = i; 303 return qeth_send_ipa_cmd(card, iob, 304 qeth_l2_send_setdelvlan_cb, NULL); 305 } 306 307 static void qeth_l2_process_vlans(struct qeth_card *card, int clear) 308 { 309 struct qeth_vlan_vid *id; 310 QETH_DBF_TEXT(TRACE, 3, "L2prcvln"); 311 spin_lock_bh(&card->vlanlock); 312 list_for_each_entry(id, &card->vid_list, list) { 313 if (clear) 314 qeth_l2_send_setdelvlan(card, id->vid, 315 IPA_CMD_DELVLAN); 316 else 317 qeth_l2_send_setdelvlan(card, id->vid, 318 IPA_CMD_SETVLAN); 319 } 320 spin_unlock_bh(&card->vlanlock); 321 } 322 323 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) 324 { 325 struct qeth_card *card = netdev_priv(dev); 326 struct qeth_vlan_vid *id; 327 328 QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid); 329 id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); 330 if (id) { 331 id->vid = vid; 332 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); 333 spin_lock_bh(&card->vlanlock); 334 list_add_tail(&id->list, &card->vid_list); 335 spin_unlock_bh(&card->vlanlock); 336 } else { 337 PRINT_ERR("no memory for vid\n"); 338 } 339 } 340 341 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) 342 { 343 struct qeth_vlan_vid *id, *tmpid = NULL; 344 struct qeth_card *card = netdev_priv(dev); 345 346 QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid); 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 } 362 363 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) 364 { 365 int rc = 0; 366 367 QETH_DBF_TEXT(SETUP , 2, "stopcard"); 368 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 369 370 qeth_set_allowed_threads(card, 0, 1); 371 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) 372 return -ERESTARTSYS; 373 if (card->read.state == CH_STATE_UP && 374 card->write.state == CH_STATE_UP && 375 (card->state == CARD_STATE_UP)) { 376 if (recovery_mode && 377 card->info.type != QETH_CARD_TYPE_OSN) { 378 qeth_l2_stop(card->dev); 379 } else { 380 rtnl_lock(); 381 dev_close(card->dev); 382 rtnl_unlock(); 383 } 384 if (!card->use_hard_stop) { 385 __u8 *mac = &card->dev->dev_addr[0]; 386 rc = qeth_l2_send_delmac(card, mac); 387 QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc); 388 } 389 card->state = CARD_STATE_SOFTSETUP; 390 } 391 if (card->state == CARD_STATE_SOFTSETUP) { 392 qeth_l2_process_vlans(card, 1); 393 qeth_l2_del_all_mc(card); 394 qeth_clear_ipacmd_list(card); 395 card->state = CARD_STATE_HARDSETUP; 396 } 397 if (card->state == CARD_STATE_HARDSETUP) { 398 qeth_qdio_clear_card(card, 0); 399 qeth_clear_qdio_buffers(card); 400 qeth_clear_working_pool_list(card); 401 card->state = CARD_STATE_DOWN; 402 } 403 if (card->state == CARD_STATE_DOWN) { 404 qeth_clear_cmd_buffers(&card->read); 405 qeth_clear_cmd_buffers(&card->write); 406 } 407 card->use_hard_stop = 0; 408 return rc; 409 } 410 411 static void qeth_l2_process_inbound_buffer(struct qeth_card *card, 412 struct qeth_qdio_buffer *buf, int index) 413 { 414 struct qdio_buffer_element *element; 415 struct sk_buff *skb; 416 struct qeth_hdr *hdr; 417 int offset; 418 unsigned int len; 419 420 /* get first element of current buffer */ 421 element = (struct qdio_buffer_element *)&buf->buffer->element[0]; 422 offset = 0; 423 if (card->options.performance_stats) 424 card->perf_stats.bufs_rec++; 425 while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element, 426 &offset, &hdr))) { 427 skb->dev = card->dev; 428 /* is device UP ? */ 429 if (!(card->dev->flags & IFF_UP)) { 430 dev_kfree_skb_any(skb); 431 continue; 432 } 433 434 switch (hdr->hdr.l2.id) { 435 case QETH_HEADER_TYPE_LAYER2: 436 skb->pkt_type = PACKET_HOST; 437 skb->protocol = eth_type_trans(skb, skb->dev); 438 if (card->options.checksum_type == NO_CHECKSUMMING) 439 skb->ip_summed = CHECKSUM_UNNECESSARY; 440 else 441 skb->ip_summed = CHECKSUM_NONE; 442 if (skb->protocol == htons(ETH_P_802_2)) 443 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; 444 len = skb->len; 445 netif_rx(skb); 446 break; 447 case QETH_HEADER_TYPE_OSN: 448 skb_push(skb, sizeof(struct qeth_hdr)); 449 skb_copy_to_linear_data(skb, hdr, 450 sizeof(struct qeth_hdr)); 451 len = skb->len; 452 card->osn_info.data_cb(skb); 453 break; 454 default: 455 dev_kfree_skb_any(skb); 456 QETH_DBF_TEXT(TRACE, 3, "inbunkno"); 457 QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); 458 continue; 459 } 460 card->dev->last_rx = jiffies; 461 card->stats.rx_packets++; 462 card->stats.rx_bytes += len; 463 } 464 } 465 466 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, 467 enum qeth_ipa_cmds ipacmd, 468 int (*reply_cb) (struct qeth_card *, 469 struct qeth_reply*, 470 unsigned long)) 471 { 472 struct qeth_ipa_cmd *cmd; 473 struct qeth_cmd_buffer *iob; 474 475 QETH_DBF_TEXT(TRACE, 2, "L2sdmac"); 476 iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); 477 cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); 478 cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; 479 memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); 480 return qeth_send_ipa_cmd(card, iob, reply_cb, NULL); 481 } 482 483 static int qeth_l2_send_setmac_cb(struct qeth_card *card, 484 struct qeth_reply *reply, 485 unsigned long data) 486 { 487 struct qeth_ipa_cmd *cmd; 488 489 QETH_DBF_TEXT(TRACE, 2, "L2Smaccb"); 490 cmd = (struct qeth_ipa_cmd *) data; 491 if (cmd->hdr.return_code) { 492 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code); 493 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 494 cmd->hdr.return_code = -EIO; 495 } else { 496 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; 497 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac, 498 OSA_ADDR_LEN); 499 PRINT_INFO("MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x " 500 "successfully registered on device %s\n", 501 card->dev->dev_addr[0], card->dev->dev_addr[1], 502 card->dev->dev_addr[2], card->dev->dev_addr[3], 503 card->dev->dev_addr[4], card->dev->dev_addr[5], 504 card->dev->name); 505 } 506 return 0; 507 } 508 509 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) 510 { 511 QETH_DBF_TEXT(TRACE, 2, "L2Setmac"); 512 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC, 513 qeth_l2_send_setmac_cb); 514 } 515 516 static int qeth_l2_send_delmac_cb(struct qeth_card *card, 517 struct qeth_reply *reply, 518 unsigned long data) 519 { 520 struct qeth_ipa_cmd *cmd; 521 522 QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb"); 523 cmd = (struct qeth_ipa_cmd *) data; 524 if (cmd->hdr.return_code) { 525 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code); 526 cmd->hdr.return_code = -EIO; 527 return 0; 528 } 529 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; 530 531 return 0; 532 } 533 534 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) 535 { 536 QETH_DBF_TEXT(TRACE, 2, "L2Delmac"); 537 if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) 538 return 0; 539 return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC, 540 qeth_l2_send_delmac_cb); 541 } 542 543 static int qeth_l2_request_initial_mac(struct qeth_card *card) 544 { 545 int rc = 0; 546 char vendor_pre[] = {0x02, 0x00, 0x00}; 547 548 QETH_DBF_TEXT(SETUP, 2, "doL2init"); 549 QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); 550 551 rc = qeth_query_setadapterparms(card); 552 if (rc) { 553 PRINT_WARN("could not query adapter parameters on device %s: " 554 "x%x\n", CARD_BUS_ID(card), rc); 555 } 556 557 if (card->info.guestlan) { 558 rc = qeth_setadpparms_change_macaddr(card); 559 if (rc) { 560 PRINT_WARN("couldn't get MAC address on " 561 "device %s: x%x\n", 562 CARD_BUS_ID(card), rc); 563 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 564 return rc; 565 } 566 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN); 567 } else { 568 random_ether_addr(card->dev->dev_addr); 569 memcpy(card->dev->dev_addr, vendor_pre, 3); 570 } 571 return 0; 572 } 573 574 static int qeth_l2_set_mac_address(struct net_device *dev, void *p) 575 { 576 struct sockaddr *addr = p; 577 struct qeth_card *card = netdev_priv(dev); 578 int rc = 0; 579 580 QETH_DBF_TEXT(TRACE, 3, "setmac"); 581 582 if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { 583 QETH_DBF_TEXT(TRACE, 3, "setmcINV"); 584 return -EOPNOTSUPP; 585 } 586 587 if (card->info.type == QETH_CARD_TYPE_OSN) { 588 PRINT_WARN("Setting MAC address on %s is not supported.\n", 589 dev->name); 590 QETH_DBF_TEXT(TRACE, 3, "setmcOSN"); 591 return -EOPNOTSUPP; 592 } 593 QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card)); 594 QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN); 595 rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); 596 if (!rc) 597 rc = qeth_l2_send_setmac(card, addr->sa_data); 598 return rc; 599 } 600 601 static void qeth_l2_set_multicast_list(struct net_device *dev) 602 { 603 struct qeth_card *card = netdev_priv(dev); 604 struct dev_mc_list *dm; 605 606 if (card->info.type == QETH_CARD_TYPE_OSN) 607 return ; 608 609 QETH_DBF_TEXT(TRACE, 3, "setmulti"); 610 qeth_l2_del_all_mc(card); 611 spin_lock_bh(&card->mclock); 612 for (dm = dev->mc_list; dm; dm = dm->next) 613 qeth_l2_add_mc(card, dm->dmi_addr); 614 spin_unlock_bh(&card->mclock); 615 if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) 616 return; 617 qeth_setadp_promisc_mode(card); 618 } 619 620 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 621 { 622 int rc; 623 struct qeth_hdr *hdr = NULL; 624 int elements = 0; 625 struct qeth_card *card = netdev_priv(dev); 626 struct sk_buff *new_skb = skb; 627 int ipv = qeth_get_ip_version(skb); 628 int cast_type = qeth_get_cast_type(card, skb); 629 struct qeth_qdio_out_q *queue = card->qdio.out_qs 630 [qeth_get_priority_queue(card, skb, ipv, cast_type)]; 631 int tx_bytes = skb->len; 632 enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO; 633 struct qeth_eddp_context *ctx = NULL; 634 635 if ((card->state != CARD_STATE_UP) || !card->lan_online) { 636 card->stats.tx_carrier_errors++; 637 goto tx_drop; 638 } 639 640 if ((card->info.type == QETH_CARD_TYPE_OSN) && 641 (skb->protocol == htons(ETH_P_IPV6))) 642 goto tx_drop; 643 644 if (card->options.performance_stats) { 645 card->perf_stats.outbound_cnt++; 646 card->perf_stats.outbound_start_time = qeth_get_micros(); 647 } 648 netif_stop_queue(dev); 649 650 if (skb_is_gso(skb)) 651 large_send = QETH_LARGE_SEND_EDDP; 652 653 if (card->info.type == QETH_CARD_TYPE_OSN) 654 hdr = (struct qeth_hdr *)skb->data; 655 else { 656 /* create a clone with writeable headroom */ 657 new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr)); 658 if (!new_skb) 659 goto tx_drop; 660 hdr = (struct qeth_hdr *)skb_push(new_skb, 661 sizeof(struct qeth_hdr)); 662 qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type); 663 } 664 665 if (large_send == QETH_LARGE_SEND_EDDP) { 666 ctx = qeth_eddp_create_context(card, new_skb, hdr, 667 skb->sk->sk_protocol); 668 if (ctx == NULL) { 669 PRINT_WARN("could not create eddp context\n"); 670 goto tx_drop; 671 } 672 } else { 673 elements = qeth_get_elements_no(card, (void *)hdr, new_skb, 0); 674 if (!elements) 675 goto tx_drop; 676 } 677 678 if ((large_send == QETH_LARGE_SEND_NO) && 679 (skb->ip_summed == CHECKSUM_PARTIAL)) 680 qeth_tx_csum(new_skb); 681 682 if (card->info.type != QETH_CARD_TYPE_IQD) 683 rc = qeth_do_send_packet(card, queue, new_skb, hdr, 684 elements, ctx); 685 else 686 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, 687 elements, ctx); 688 if (!rc) { 689 card->stats.tx_packets++; 690 card->stats.tx_bytes += tx_bytes; 691 if (new_skb != skb) 692 dev_kfree_skb_any(skb); 693 if (card->options.performance_stats) { 694 if (large_send != QETH_LARGE_SEND_NO) { 695 card->perf_stats.large_send_bytes += tx_bytes; 696 card->perf_stats.large_send_cnt++; 697 } 698 if (skb_shinfo(new_skb)->nr_frags > 0) { 699 card->perf_stats.sg_skbs_sent++; 700 /* nr_frags + skb->data */ 701 card->perf_stats.sg_frags_sent += 702 skb_shinfo(new_skb)->nr_frags + 1; 703 } 704 } 705 706 if (ctx != NULL) { 707 qeth_eddp_put_context(ctx); 708 dev_kfree_skb_any(new_skb); 709 } 710 } else { 711 if (ctx != NULL) 712 qeth_eddp_put_context(ctx); 713 714 if (rc == -EBUSY) { 715 if (new_skb != skb) 716 dev_kfree_skb_any(new_skb); 717 return NETDEV_TX_BUSY; 718 } else 719 goto tx_drop; 720 } 721 722 netif_wake_queue(dev); 723 if (card->options.performance_stats) 724 card->perf_stats.outbound_time += qeth_get_micros() - 725 card->perf_stats.outbound_start_time; 726 return rc; 727 728 tx_drop: 729 card->stats.tx_dropped++; 730 card->stats.tx_errors++; 731 if ((new_skb != skb) && new_skb) 732 dev_kfree_skb_any(new_skb); 733 dev_kfree_skb_any(skb); 734 return NETDEV_TX_OK; 735 } 736 737 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev, 738 unsigned int status, unsigned int qdio_err, 739 unsigned int siga_err, unsigned int queue, 740 int first_element, int count, unsigned long card_ptr) 741 { 742 struct net_device *net_dev; 743 struct qeth_card *card; 744 struct qeth_qdio_buffer *buffer; 745 int index; 746 int i; 747 748 card = (struct qeth_card *) card_ptr; 749 net_dev = card->dev; 750 if (card->options.performance_stats) { 751 card->perf_stats.inbound_cnt++; 752 card->perf_stats.inbound_start_time = qeth_get_micros(); 753 } 754 if (status & QDIO_STATUS_LOOK_FOR_ERROR) { 755 if (status & QDIO_STATUS_ACTIVATE_CHECK_CONDITION) { 756 QETH_DBF_TEXT(TRACE, 1, "qdinchk"); 757 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card)); 758 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element, 759 count); 760 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", queue, status); 761 qeth_schedule_recovery(card); 762 return; 763 } 764 } 765 for (i = first_element; i < (first_element + count); ++i) { 766 index = i % QDIO_MAX_BUFFERS_PER_Q; 767 buffer = &card->qdio.in_q->bufs[index]; 768 if (!((status & QDIO_STATUS_LOOK_FOR_ERROR) && 769 qeth_check_qdio_errors(buffer->buffer, 770 qdio_err, siga_err, "qinerr"))) 771 qeth_l2_process_inbound_buffer(card, buffer, index); 772 /* clear buffer and give back to hardware */ 773 qeth_put_buffer_pool_entry(card, buffer->pool_entry); 774 qeth_queue_input_buffer(card, index); 775 } 776 if (card->options.performance_stats) 777 card->perf_stats.inbound_time += qeth_get_micros() - 778 card->perf_stats.inbound_start_time; 779 } 780 781 static int qeth_l2_open(struct net_device *dev) 782 { 783 struct qeth_card *card = netdev_priv(dev); 784 785 QETH_DBF_TEXT(TRACE, 4, "qethopen"); 786 if (card->state != CARD_STATE_SOFTSETUP) 787 return -ENODEV; 788 789 if ((card->info.type != QETH_CARD_TYPE_OSN) && 790 (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { 791 QETH_DBF_TEXT(TRACE, 4, "nomacadr"); 792 return -EPERM; 793 } 794 card->data.state = CH_STATE_UP; 795 card->state = CARD_STATE_UP; 796 card->dev->flags |= IFF_UP; 797 netif_start_queue(dev); 798 799 if (!card->lan_online && netif_carrier_ok(dev)) 800 netif_carrier_off(dev); 801 return 0; 802 } 803 804 805 static int qeth_l2_stop(struct net_device *dev) 806 { 807 struct qeth_card *card = netdev_priv(dev); 808 809 QETH_DBF_TEXT(TRACE, 4, "qethstop"); 810 netif_tx_disable(dev); 811 card->dev->flags &= ~IFF_UP; 812 if (card->state == CARD_STATE_UP) 813 card->state = CARD_STATE_SOFTSETUP; 814 return 0; 815 } 816 817 static int qeth_l2_probe_device(struct ccwgroup_device *gdev) 818 { 819 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 820 821 INIT_LIST_HEAD(&card->vid_list); 822 INIT_LIST_HEAD(&card->mc_list); 823 card->options.layer2 = 1; 824 card->discipline.input_handler = (qdio_handler_t *) 825 qeth_l2_qdio_input_handler; 826 card->discipline.output_handler = (qdio_handler_t *) 827 qeth_qdio_output_handler; 828 card->discipline.recover = qeth_l2_recover; 829 return 0; 830 } 831 832 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) 833 { 834 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 835 836 wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); 837 838 if (cgdev->state == CCWGROUP_ONLINE) { 839 card->use_hard_stop = 1; 840 qeth_l2_set_offline(cgdev); 841 } 842 843 if (card->dev) { 844 unregister_netdev(card->dev); 845 card->dev = NULL; 846 } 847 848 qeth_l2_del_all_mc(card); 849 return; 850 } 851 852 static int qeth_l2_ethtool_set_tso(struct net_device *dev, u32 data) 853 { 854 struct qeth_card *card = netdev_priv(dev); 855 856 if (data) { 857 if (card->options.large_send == QETH_LARGE_SEND_NO) { 858 card->options.large_send = QETH_LARGE_SEND_EDDP; 859 dev->features |= NETIF_F_TSO; 860 } 861 } else { 862 dev->features &= ~NETIF_F_TSO; 863 card->options.large_send = QETH_LARGE_SEND_NO; 864 } 865 return 0; 866 } 867 868 static struct ethtool_ops qeth_l2_ethtool_ops = { 869 .get_link = ethtool_op_get_link, 870 .get_tx_csum = ethtool_op_get_tx_csum, 871 .set_tx_csum = ethtool_op_set_tx_hw_csum, 872 .get_sg = ethtool_op_get_sg, 873 .set_sg = ethtool_op_set_sg, 874 .get_tso = ethtool_op_get_tso, 875 .set_tso = qeth_l2_ethtool_set_tso, 876 .get_strings = qeth_core_get_strings, 877 .get_ethtool_stats = qeth_core_get_ethtool_stats, 878 .get_stats_count = qeth_core_get_stats_count, 879 .get_drvinfo = qeth_core_get_drvinfo, 880 .get_settings = qeth_core_ethtool_get_settings, 881 }; 882 883 static struct ethtool_ops qeth_l2_osn_ops = { 884 .get_strings = qeth_core_get_strings, 885 .get_ethtool_stats = qeth_core_get_ethtool_stats, 886 .get_stats_count = qeth_core_get_stats_count, 887 .get_drvinfo = qeth_core_get_drvinfo, 888 }; 889 890 static int qeth_l2_setup_netdev(struct qeth_card *card) 891 { 892 switch (card->info.type) { 893 case QETH_CARD_TYPE_OSAE: 894 card->dev = alloc_etherdev(0); 895 break; 896 case QETH_CARD_TYPE_IQD: 897 card->dev = alloc_netdev(0, "hsi%d", ether_setup); 898 break; 899 case QETH_CARD_TYPE_OSN: 900 card->dev = alloc_netdev(0, "osn%d", ether_setup); 901 card->dev->flags |= IFF_NOARP; 902 break; 903 default: 904 card->dev = alloc_etherdev(0); 905 } 906 907 if (!card->dev) 908 return -ENODEV; 909 910 card->dev->priv = card; 911 card->dev->tx_timeout = &qeth_tx_timeout; 912 card->dev->watchdog_timeo = QETH_TX_TIMEOUT; 913 card->dev->open = qeth_l2_open; 914 card->dev->stop = qeth_l2_stop; 915 card->dev->hard_start_xmit = qeth_l2_hard_start_xmit; 916 card->dev->do_ioctl = qeth_l2_do_ioctl; 917 card->dev->get_stats = qeth_get_stats; 918 card->dev->change_mtu = qeth_change_mtu; 919 card->dev->set_multicast_list = qeth_l2_set_multicast_list; 920 card->dev->vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid; 921 card->dev->vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid; 922 card->dev->set_mac_address = qeth_l2_set_mac_address; 923 card->dev->mtu = card->info.initial_mtu; 924 if (card->info.type != QETH_CARD_TYPE_OSN) 925 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops); 926 else 927 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops); 928 card->dev->features |= NETIF_F_HW_VLAN_FILTER; 929 card->info.broadcast_capable = 1; 930 qeth_l2_request_initial_mac(card); 931 SET_NETDEV_DEV(card->dev, &card->gdev->dev); 932 return register_netdev(card->dev); 933 } 934 935 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) 936 { 937 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 938 int rc = 0; 939 enum qeth_card_states recover_flag; 940 941 BUG_ON(!card); 942 QETH_DBF_TEXT(SETUP, 2, "setonlin"); 943 QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); 944 945 qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1); 946 if (qeth_wait_for_threads(card, ~QETH_RECOVER_THREAD)) { 947 PRINT_WARN("set_online of card %s interrupted by user!\n", 948 CARD_BUS_ID(card)); 949 return -ERESTARTSYS; 950 } 951 952 recover_flag = card->state; 953 rc = ccw_device_set_online(CARD_RDEV(card)); 954 if (rc) { 955 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 956 return -EIO; 957 } 958 rc = ccw_device_set_online(CARD_WDEV(card)); 959 if (rc) { 960 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 961 return -EIO; 962 } 963 rc = ccw_device_set_online(CARD_DDEV(card)); 964 if (rc) { 965 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 966 return -EIO; 967 } 968 969 rc = qeth_core_hardsetup_card(card); 970 if (rc) { 971 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); 972 goto out_remove; 973 } 974 975 if (!card->dev && qeth_l2_setup_netdev(card)) 976 goto out_remove; 977 978 if (card->info.type != QETH_CARD_TYPE_OSN) 979 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); 980 981 card->state = CARD_STATE_HARDSETUP; 982 qeth_print_status_message(card); 983 984 /* softsetup */ 985 QETH_DBF_TEXT(SETUP, 2, "softsetp"); 986 987 rc = qeth_send_startlan(card); 988 if (rc) { 989 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 990 if (rc == 0xe080) { 991 PRINT_WARN("LAN on card %s if offline! " 992 "Waiting for STARTLAN from card.\n", 993 CARD_BUS_ID(card)); 994 card->lan_online = 0; 995 } 996 return rc; 997 } else 998 card->lan_online = 1; 999 1000 if (card->info.type != QETH_CARD_TYPE_OSN) { 1001 qeth_set_large_send(card, card->options.large_send); 1002 qeth_l2_process_vlans(card, 0); 1003 } 1004 1005 netif_tx_disable(card->dev); 1006 1007 rc = qeth_init_qdio_queues(card); 1008 if (rc) { 1009 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); 1010 goto out_remove; 1011 } 1012 card->state = CARD_STATE_SOFTSETUP; 1013 netif_carrier_on(card->dev); 1014 1015 qeth_set_allowed_threads(card, 0xffffffff, 0); 1016 if (recover_flag == CARD_STATE_RECOVER) { 1017 if (recovery_mode && 1018 card->info.type != QETH_CARD_TYPE_OSN) { 1019 qeth_l2_open(card->dev); 1020 } else { 1021 rtnl_lock(); 1022 dev_open(card->dev); 1023 rtnl_unlock(); 1024 } 1025 /* this also sets saved unicast addresses */ 1026 qeth_l2_set_multicast_list(card->dev); 1027 } 1028 /* let user_space know that device is online */ 1029 kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); 1030 return 0; 1031 out_remove: 1032 card->use_hard_stop = 1; 1033 qeth_l2_stop_card(card, 0); 1034 ccw_device_set_offline(CARD_DDEV(card)); 1035 ccw_device_set_offline(CARD_WDEV(card)); 1036 ccw_device_set_offline(CARD_RDEV(card)); 1037 if (recover_flag == CARD_STATE_RECOVER) 1038 card->state = CARD_STATE_RECOVER; 1039 else 1040 card->state = CARD_STATE_DOWN; 1041 return -ENODEV; 1042 } 1043 1044 static int qeth_l2_set_online(struct ccwgroup_device *gdev) 1045 { 1046 return __qeth_l2_set_online(gdev, 0); 1047 } 1048 1049 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, 1050 int recovery_mode) 1051 { 1052 struct qeth_card *card = dev_get_drvdata(&cgdev->dev); 1053 int rc = 0, rc2 = 0, rc3 = 0; 1054 enum qeth_card_states recover_flag; 1055 1056 QETH_DBF_TEXT(SETUP, 3, "setoffl"); 1057 QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); 1058 1059 if (card->dev && netif_carrier_ok(card->dev)) 1060 netif_carrier_off(card->dev); 1061 recover_flag = card->state; 1062 if (qeth_l2_stop_card(card, recovery_mode) == -ERESTARTSYS) { 1063 PRINT_WARN("Stopping card %s interrupted by user!\n", 1064 CARD_BUS_ID(card)); 1065 return -ERESTARTSYS; 1066 } 1067 rc = ccw_device_set_offline(CARD_DDEV(card)); 1068 rc2 = ccw_device_set_offline(CARD_WDEV(card)); 1069 rc3 = ccw_device_set_offline(CARD_RDEV(card)); 1070 if (!rc) 1071 rc = (rc2) ? rc2 : rc3; 1072 if (rc) 1073 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); 1074 if (recover_flag == CARD_STATE_UP) 1075 card->state = CARD_STATE_RECOVER; 1076 /* let user_space know that device is offline */ 1077 kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); 1078 return 0; 1079 } 1080 1081 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) 1082 { 1083 return __qeth_l2_set_offline(cgdev, 0); 1084 } 1085 1086 static int qeth_l2_recover(void *ptr) 1087 { 1088 struct qeth_card *card; 1089 int rc = 0; 1090 1091 card = (struct qeth_card *) ptr; 1092 QETH_DBF_TEXT(TRACE, 2, "recover1"); 1093 QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *)); 1094 if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) 1095 return 0; 1096 QETH_DBF_TEXT(TRACE, 2, "recover2"); 1097 PRINT_WARN("Recovery of device %s started ...\n", 1098 CARD_BUS_ID(card)); 1099 card->use_hard_stop = 1; 1100 __qeth_l2_set_offline(card->gdev, 1); 1101 rc = __qeth_l2_set_online(card->gdev, 1); 1102 /* don't run another scheduled recovery */ 1103 qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); 1104 qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); 1105 if (!rc) 1106 PRINT_INFO("Device %s successfully recovered!\n", 1107 CARD_BUS_ID(card)); 1108 else 1109 PRINT_INFO("Device %s could not be recovered!\n", 1110 CARD_BUS_ID(card)); 1111 return 0; 1112 } 1113 1114 static int __init qeth_l2_init(void) 1115 { 1116 PRINT_INFO("register layer 2 discipline\n"); 1117 return 0; 1118 } 1119 1120 static void __exit qeth_l2_exit(void) 1121 { 1122 PRINT_INFO("unregister layer 2 discipline\n"); 1123 } 1124 1125 static void qeth_l2_shutdown(struct ccwgroup_device *gdev) 1126 { 1127 struct qeth_card *card = dev_get_drvdata(&gdev->dev); 1128 qeth_qdio_clear_card(card, 0); 1129 qeth_clear_qdio_buffers(card); 1130 } 1131 1132 struct ccwgroup_driver qeth_l2_ccwgroup_driver = { 1133 .probe = qeth_l2_probe_device, 1134 .remove = qeth_l2_remove_device, 1135 .set_online = qeth_l2_set_online, 1136 .set_offline = qeth_l2_set_offline, 1137 .shutdown = qeth_l2_shutdown, 1138 }; 1139 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver); 1140 1141 static int qeth_osn_send_control_data(struct qeth_card *card, int len, 1142 struct qeth_cmd_buffer *iob) 1143 { 1144 unsigned long flags; 1145 int rc = 0; 1146 1147 QETH_DBF_TEXT(TRACE, 5, "osndctrd"); 1148 1149 wait_event(card->wait_q, 1150 atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); 1151 qeth_prepare_control_data(card, len, iob); 1152 QETH_DBF_TEXT(TRACE, 6, "osnoirqp"); 1153 spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); 1154 rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, 1155 (addr_t) iob, 0, 0); 1156 spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); 1157 if (rc) { 1158 PRINT_WARN("qeth_osn_send_control_data: " 1159 "ccw_device_start rc = %i\n", rc); 1160 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc); 1161 qeth_release_buffer(iob->channel, iob); 1162 atomic_set(&card->write.irq_pending, 0); 1163 wake_up(&card->wait_q); 1164 } 1165 return rc; 1166 } 1167 1168 static int qeth_osn_send_ipa_cmd(struct qeth_card *card, 1169 struct qeth_cmd_buffer *iob, int data_len) 1170 { 1171 u16 s1, s2; 1172 1173 QETH_DBF_TEXT(TRACE, 4, "osndipa"); 1174 1175 qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); 1176 s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); 1177 s2 = (u16)data_len; 1178 memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); 1179 memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); 1180 memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); 1181 memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); 1182 return qeth_osn_send_control_data(card, s1, iob); 1183 } 1184 1185 int qeth_osn_assist(struct net_device *dev, void *data, int data_len) 1186 { 1187 struct qeth_cmd_buffer *iob; 1188 struct qeth_card *card; 1189 int rc; 1190 1191 QETH_DBF_TEXT(TRACE, 2, "osnsdmc"); 1192 if (!dev) 1193 return -ENODEV; 1194 card = netdev_priv(dev); 1195 if (!card) 1196 return -ENODEV; 1197 if ((card->state != CARD_STATE_UP) && 1198 (card->state != CARD_STATE_SOFTSETUP)) 1199 return -ENODEV; 1200 iob = qeth_wait_for_buffer(&card->write); 1201 memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); 1202 rc = qeth_osn_send_ipa_cmd(card, iob, data_len); 1203 return rc; 1204 } 1205 EXPORT_SYMBOL(qeth_osn_assist); 1206 1207 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, 1208 int (*assist_cb)(struct net_device *, void *), 1209 int (*data_cb)(struct sk_buff *)) 1210 { 1211 struct qeth_card *card; 1212 1213 QETH_DBF_TEXT(TRACE, 2, "osnreg"); 1214 *dev = qeth_l2_netdev_by_devno(read_dev_no); 1215 if (*dev == NULL) 1216 return -ENODEV; 1217 card = netdev_priv(*dev); 1218 if (!card) 1219 return -ENODEV; 1220 if ((assist_cb == NULL) || (data_cb == NULL)) 1221 return -EINVAL; 1222 card->osn_info.assist_cb = assist_cb; 1223 card->osn_info.data_cb = data_cb; 1224 return 0; 1225 } 1226 EXPORT_SYMBOL(qeth_osn_register); 1227 1228 void qeth_osn_deregister(struct net_device *dev) 1229 { 1230 struct qeth_card *card; 1231 1232 QETH_DBF_TEXT(TRACE, 2, "osndereg"); 1233 if (!dev) 1234 return; 1235 card = netdev_priv(dev); 1236 if (!card) 1237 return; 1238 card->osn_info.assist_cb = NULL; 1239 card->osn_info.data_cb = NULL; 1240 return; 1241 } 1242 EXPORT_SYMBOL(qeth_osn_deregister); 1243 1244 module_init(qeth_l2_init); 1245 module_exit(qeth_l2_exit); 1246 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); 1247 MODULE_DESCRIPTION("qeth layer 2 discipline"); 1248 MODULE_LICENSE("GPL"); 1249