drivers/s390/net/qeth_l2_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/string.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/slab.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/mii.h>
  20 #include <linux/ip.h>
  21 #include <linux/list.h>
  22
  23 #include "qeth_core.h"
  24 #include "qeth_l2.h"
  25
  26 static int qeth_l2_set_offline(struct ccwgroup_device *);
  27 static int qeth_l2_stop(struct net_device *);
  28 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
  29 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
  30                            enum qeth_ipa_cmds);
  31 static void qeth_l2_set_multicast_list(struct net_device *);
  32 static int qeth_l2_recover(void *);
  33 static void qeth_bridgeport_query_support(struct qeth_card *card);
  34 static void qeth_bridge_state_change(struct qeth_card *card,
  35                                         struct qeth_ipa_cmd *cmd);
  36 static void qeth_bridge_host_event(struct qeth_card *card,
  37                                         struct qeth_ipa_cmd *cmd);
  38
  39 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
  40 {
  41         struct qeth_card *card = dev->ml_priv;
  42         struct mii_ioctl_data *mii_data;
  43         int rc = 0;
  44
  45         if (!card)
  46                 return -ENODEV;
  47
  48         if (!qeth_card_hw_is_reachable(card))
  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
  89 static 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
 107 static 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
 129 static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
 130 {
 131         int rc;
 132
 133         if (retcode)
 134                 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
 135         switch (retcode) {
 136         case IPA_RC_SUCCESS:
 137                 rc = 0;
 138                 break;
 139         case IPA_RC_L2_UNSUPPORTED_CMD:
 140                 rc = -EOPNOTSUPP;
 141                 break;
 142         case IPA_RC_L2_ADDR_TABLE_FULL:
 143                 rc = -ENOSPC;
 144                 break;
 145         case IPA_RC_L2_DUP_MAC:
 146         case IPA_RC_L2_DUP_LAYER3_MAC:
 147                 rc = -EEXIST;
 148                 break;
 149         case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
 150         case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
 151                 rc = -EPERM;
 152                 break;
 153         case IPA_RC_L2_MAC_NOT_FOUND:
 154                 rc = -ENOENT;
 155                 break;
 156         case -ENOMEM:
 157                 rc = -ENOMEM;
 158                 break;
 159         default:
 160                 rc = -EIO;
 161                 break;
 162         }
 163         return rc;
 164 }
 165
 166 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
 167 {
 168         int rc;
 169
 170         QETH_CARD_TEXT(card, 2, "L2Sgmac");
 171         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 172                                         IPA_CMD_SETGMAC));
 173         if (rc == -EEXIST)
 174                 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
 175                         mac, QETH_CARD_IFNAME(card));
 176         else if (rc)
 177                 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
 178                         mac, QETH_CARD_IFNAME(card), rc);
 179         return rc;
 180 }
 181
 182 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
 183 {
 184         int rc;
 185
 186         QETH_CARD_TEXT(card, 2, "L2Dgmac");
 187         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 188                                         IPA_CMD_DELGMAC));
 189         if (rc)
 190                 QETH_DBF_MESSAGE(2,
 191                         "Could not delete group MAC %pM on %s: %d\n",
 192                         mac, QETH_CARD_IFNAME(card), rc);
 193         return rc;
 194 }
 195
 196 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
 197 {
 198         struct qeth_mc_mac *mc;
 199         int rc;
 200
 201         mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
 202
 203         if (!mc)
 204                 return;
 205
 206         memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
 207         mc->mc_addrlen = OSA_ADDR_LEN;
 208         mc->is_vmac = vmac;
 209
 210         if (vmac) {
 211                 rc = qeth_setdel_makerc(card,
 212                         qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC));
 213         } else {
 214                 rc = qeth_setdel_makerc(card,
 215                         qeth_l2_send_setgroupmac(card, mac));
 216         }
 217
 218         if (!rc)
 219                 list_add_tail(&mc->list, &card->mc_list);
 220         else
 221                 kfree(mc);
 222 }
 223
 224 static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
 225 {
 226         struct qeth_mc_mac *mc, *tmp;
 227
 228         spin_lock_bh(&card->mclock);
 229         list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
 230                 if (del) {
 231                         if (mc->is_vmac)
 232                                 qeth_l2_send_setdelmac(card, mc->mc_addr,
 233                                         IPA_CMD_DELVMAC);
 234                         else
 235                                 qeth_l2_send_delgroupmac(card, mc->mc_addr);
 236                 }
 237                 list_del(&mc->list);
 238                 kfree(mc);
 239         }
 240         spin_unlock_bh(&card->mclock);
 241 }
 242
 243 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
 244                         struct sk_buff *skb)
 245 {
 246         if (card->info.type == QETH_CARD_TYPE_OSN)
 247                 return RTN_UNSPEC;
 248         if (is_broadcast_ether_addr(skb->data))
 249                 return RTN_BROADCAST;
 250         if (is_multicast_ether_addr(skb->data))
 251                 return RTN_MULTICAST;
 252         return RTN_UNSPEC;
 253 }
 254
 255 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
 256                         struct sk_buff *skb, int cast_type)
 257 {
 258         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
 259
 260         memset(hdr, 0, sizeof(struct qeth_hdr));
 261         hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
 262
 263         /* set byte byte 3 to casting flags */
 264         if (cast_type == RTN_MULTICAST)
 265                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 266         else if (cast_type == RTN_BROADCAST)
 267                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
 268         else
 269                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 270
 271         hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
 272         /* VSWITCH relies on the VLAN
 273          * information to be present in
 274          * the QDIO header */
 275         if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
 276                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
 277                 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
 278         }
 279 }
 280
 281 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
 282                         struct qeth_reply *reply, unsigned long data)
 283 {
 284         struct qeth_ipa_cmd *cmd;
 285
 286         QETH_CARD_TEXT(card, 2, "L2sdvcb");
 287         cmd = (struct qeth_ipa_cmd *) data;
 288         if (cmd->hdr.return_code) {
 289                 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
 290                           "Continuing\n", cmd->data.setdelvlan.vlan_id,
 291                           QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 292                 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
 293                 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
 294         }
 295         return 0;
 296 }
 297
 298 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
 299                                 enum qeth_ipa_cmds ipacmd)
 300 {
 301         struct qeth_ipa_cmd *cmd;
 302         struct qeth_cmd_buffer *iob;
 303
 304         QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
 305         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 306         if (!iob)
 307                 return -ENOMEM;
 308         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 309         cmd->data.setdelvlan.vlan_id = i;
 310         return qeth_send_ipa_cmd(card, iob,
 311                                  qeth_l2_send_setdelvlan_cb, NULL);
 312 }
 313
 314 static void qeth_l2_process_vlans(struct qeth_card *card)
 315 {
 316         struct qeth_vlan_vid *id;
 317         QETH_CARD_TEXT(card, 3, "L2prcvln");
 318         spin_lock_bh(&card->vlanlock);
 319         list_for_each_entry(id, &card->vid_list, list) {
 320                 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
 321         }
 322         spin_unlock_bh(&card->vlanlock);
 323 }
 324
 325 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
 326                                    __be16 proto, u16 vid)
 327 {
 328         struct qeth_card *card = dev->ml_priv;
 329         struct qeth_vlan_vid *id;
 330         int rc;
 331
 332         QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
 333         if (!vid)
 334                 return 0;
 335         if (card->info.type == QETH_CARD_TYPE_OSM) {
 336                 QETH_CARD_TEXT(card, 3, "aidOSM");
 337                 return 0;
 338         }
 339         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 340                 QETH_CARD_TEXT(card, 3, "aidREC");
 341                 return 0;
 342         }
 343         id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
 344         if (id) {
 345                 id->vid = vid;
 346                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
 347                 if (rc) {
 348                         kfree(id);
 349                         return rc;
 350                 }
 351                 spin_lock_bh(&card->vlanlock);
 352                 list_add_tail(&id->list, &card->vid_list);
 353                 spin_unlock_bh(&card->vlanlock);
 354         } else {
 355                 return -ENOMEM;
 356         }
 357         return 0;
 358 }
 359
 360 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
 361                                     __be16 proto, u16 vid)
 362 {
 363         struct qeth_vlan_vid *id, *tmpid = NULL;
 364         struct qeth_card *card = dev->ml_priv;
 365         int rc = 0;
 366
 367         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
 368         if (card->info.type == QETH_CARD_TYPE_OSM) {
 369                 QETH_CARD_TEXT(card, 3, "kidOSM");
 370                 return 0;
 371         }
 372         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 373                 QETH_CARD_TEXT(card, 3, "kidREC");
 374                 return 0;
 375         }
 376         spin_lock_bh(&card->vlanlock);
 377         list_for_each_entry(id, &card->vid_list, list) {
 378                 if (id->vid == vid) {
 379                         list_del(&id->list);
 380                         tmpid = id;
 381                         break;
 382                 }
 383         }
 384         spin_unlock_bh(&card->vlanlock);
 385         if (tmpid) {
 386                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
 387                 kfree(tmpid);
 388         }
 389         qeth_l2_set_multicast_list(card->dev);
 390         return rc;
 391 }
 392
 393 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
 394 {
 395         QETH_DBF_TEXT(SETUP , 2, "stopcard");
 396         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 397
 398         qeth_set_allowed_threads(card, 0, 1);
 399         if (card->read.state == CH_STATE_UP &&
 400             card->write.state == CH_STATE_UP &&
 401             (card->state == CARD_STATE_UP)) {
 402                 if (recovery_mode &&
 403                     card->info.type != QETH_CARD_TYPE_OSN) {
 404                         qeth_l2_stop(card->dev);
 405                 } else {
 406                         rtnl_lock();
 407                         dev_close(card->dev);
 408                         rtnl_unlock();
 409                 }
 410                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 411                 card->state = CARD_STATE_SOFTSETUP;
 412         }
 413         if (card->state == CARD_STATE_SOFTSETUP) {
 414                 qeth_l2_del_all_mc(card, 0);
 415                 qeth_clear_ipacmd_list(card);
 416                 card->state = CARD_STATE_HARDSETUP;
 417         }
 418         if (card->state == CARD_STATE_HARDSETUP) {
 419                 qeth_qdio_clear_card(card, 0);
 420                 qeth_clear_qdio_buffers(card);
 421                 qeth_clear_working_pool_list(card);
 422                 card->state = CARD_STATE_DOWN;
 423         }
 424         if (card->state == CARD_STATE_DOWN) {
 425                 qeth_clear_cmd_buffers(&card->read);
 426                 qeth_clear_cmd_buffers(&card->write);
 427         }
 428 }
 429
 430 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
 431                                 int budget, int *done)
 432 {
 433         int work_done = 0;
 434         struct sk_buff *skb;
 435         struct qeth_hdr *hdr;
 436         unsigned int len;
 437
 438         *done = 0;
 439         WARN_ON_ONCE(!budget);
 440         while (budget) {
 441                 skb = qeth_core_get_next_skb(card,
 442                         &card->qdio.in_q->bufs[card->rx.b_index],
 443                         &card->rx.b_element, &card->rx.e_offset, &hdr);
 444                 if (!skb) {
 445                         *done = 1;
 446                         break;
 447                 }
 448                 skb->dev = card->dev;
 449                 switch (hdr->hdr.l2.id) {
 450                 case QETH_HEADER_TYPE_LAYER2:
 451                         skb->pkt_type = PACKET_HOST;
 452                         skb->protocol = eth_type_trans(skb, skb->dev);
 453                         skb->ip_summed = CHECKSUM_NONE;
 454                         if (skb->protocol == htons(ETH_P_802_2))
 455                                 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
 456                         len = skb->len;
 457                         netif_receive_skb(skb);
 458                         break;
 459                 case QETH_HEADER_TYPE_OSN:
 460                         if (card->info.type == QETH_CARD_TYPE_OSN) {
 461                                 skb_push(skb, sizeof(struct qeth_hdr));
 462                                 skb_copy_to_linear_data(skb, hdr,
 463                                                 sizeof(struct qeth_hdr));
 464                                 len = skb->len;
 465                                 card->osn_info.data_cb(skb);
 466                                 break;
 467                         }
 468                         /* else unknown */
 469                 default:
 470                         dev_kfree_skb_any(skb);
 471                         QETH_CARD_TEXT(card, 3, "inbunkno");
 472                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
 473                         continue;
 474                 }
 475                 work_done++;
 476                 budget--;
 477                 card->stats.rx_packets++;
 478                 card->stats.rx_bytes += len;
 479         }
 480         return work_done;
 481 }
 482
 483 static int qeth_l2_poll(struct napi_struct *napi, int budget)
 484 {
 485         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
 486         int work_done = 0;
 487         struct qeth_qdio_buffer *buffer;
 488         int done;
 489         int new_budget = budget;
 490
 491         if (card->options.performance_stats) {
 492                 card->perf_stats.inbound_cnt++;
 493                 card->perf_stats.inbound_start_time = qeth_get_micros();
 494         }
 495
 496         while (1) {
 497                 if (!card->rx.b_count) {
 498                         card->rx.qdio_err = 0;
 499                         card->rx.b_count = qdio_get_next_buffers(
 500                                 card->data.ccwdev, 0, &card->rx.b_index,
 501                                 &card->rx.qdio_err);
 502                         if (card->rx.b_count <= 0) {
 503                                 card->rx.b_count = 0;
 504                                 break;
 505                         }
 506                         card->rx.b_element =
 507                                 &card->qdio.in_q->bufs[card->rx.b_index]
 508                                 .buffer->element[0];
 509                         card->rx.e_offset = 0;
 510                 }
 511
 512                 while (card->rx.b_count) {
 513                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
 514                         if (!(card->rx.qdio_err &&
 515                             qeth_check_qdio_errors(card, buffer->buffer,
 516                             card->rx.qdio_err, "qinerr")))
 517                                 work_done += qeth_l2_process_inbound_buffer(
 518                                         card, new_budget, &done);
 519                         else
 520                                 done = 1;
 521
 522                         if (done) {
 523                                 if (card->options.performance_stats)
 524                                         card->perf_stats.bufs_rec++;
 525                                 qeth_put_buffer_pool_entry(card,
 526                                         buffer->pool_entry);
 527                                 qeth_queue_input_buffer(card, card->rx.b_index);
 528                                 card->rx.b_count--;
 529                                 if (card->rx.b_count) {
 530                                         card->rx.b_index =
 531                                                 (card->rx.b_index + 1) %
 532                                                 QDIO_MAX_BUFFERS_PER_Q;
 533                                         card->rx.b_element =
 534                                                 &card->qdio.in_q
 535                                                 ->bufs[card->rx.b_index]
 536                                                 .buffer->element[0];
 537                                         card->rx.e_offset = 0;
 538                                 }
 539                         }
 540
 541                         if (work_done >= budget)
 542                                 goto out;
 543                         else
 544                                 new_budget = budget - work_done;
 545                 }
 546         }
 547
 548         napi_complete(napi);
 549         if (qdio_start_irq(card->data.ccwdev, 0))
 550                 napi_schedule(&card->napi);
 551 out:
 552         if (card->options.performance_stats)
 553                 card->perf_stats.inbound_time += qeth_get_micros() -
 554                         card->perf_stats.inbound_start_time;
 555         return work_done;
 556 }
 557
 558 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
 559                            enum qeth_ipa_cmds ipacmd)
 560 {
 561         struct qeth_ipa_cmd *cmd;
 562         struct qeth_cmd_buffer *iob;
 563
 564         QETH_CARD_TEXT(card, 2, "L2sdmac");
 565         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 566         if (!iob)
 567                 return -ENOMEM;
 568         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 569         cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
 570         memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
 571         return qeth_send_ipa_cmd(card, iob, NULL, NULL);
 572 }
 573
 574 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
 575 {
 576         int rc;
 577
 578         QETH_CARD_TEXT(card, 2, "L2Setmac");
 579         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 580                                         IPA_CMD_SETVMAC));
 581         if (rc == 0) {
 582                 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 583                 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
 584                 dev_info(&card->gdev->dev,
 585                         "MAC address %pM successfully registered on device %s\n",
 586                         card->dev->dev_addr, card->dev->name);
 587         } else {
 588                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 589                 switch (rc) {
 590                 case -EEXIST:
 591                         dev_warn(&card->gdev->dev,
 592                                 "MAC address %pM already exists\n", mac);
 593                         break;
 594                 case -EPERM:
 595                         dev_warn(&card->gdev->dev,
 596                                 "MAC address %pM is not authorized\n", mac);
 597                         break;
 598                 }
 599         }
 600         return rc;
 601 }
 602
 603 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
 604 {
 605         int rc;
 606
 607         QETH_CARD_TEXT(card, 2, "L2Delmac");
 608         if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
 609                 return 0;
 610         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 611                                         IPA_CMD_DELVMAC));
 612         if (rc == 0)
 613                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 614         return rc;
 615 }
 616
 617 static int qeth_l2_request_initial_mac(struct qeth_card *card)
 618 {
 619         int rc = 0;
 620         char vendor_pre[] = {0x02, 0x00, 0x00};
 621
 622         QETH_DBF_TEXT(SETUP, 2, "doL2init");
 623         QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
 624
 625         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 626                 rc = qeth_query_setadapterparms(card);
 627                 if (rc) {
 628                         QETH_DBF_MESSAGE(2, "could not query adapter "
 629                                 "parameters on device %s: x%x\n",
 630                                 CARD_BUS_ID(card), rc);
 631                 }
 632         }
 633
 634         if (card->info.type == QETH_CARD_TYPE_IQD ||
 635             card->info.type == QETH_CARD_TYPE_OSM ||
 636             card->info.type == QETH_CARD_TYPE_OSX ||
 637             card->info.guestlan) {
 638                 rc = qeth_setadpparms_change_macaddr(card);
 639                 if (rc) {
 640                         QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
 641                                 "device %s: x%x\n", CARD_BUS_ID(card), rc);
 642                         QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
 643                         return rc;
 644                 }
 645                 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
 646         } else {
 647                 eth_random_addr(card->dev->dev_addr);
 648                 memcpy(card->dev->dev_addr, vendor_pre, 3);
 649         }
 650         return 0;
 651 }
 652
 653 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
 654 {
 655         struct sockaddr *addr = p;
 656         struct qeth_card *card = dev->ml_priv;
 657         int rc = 0;
 658
 659         QETH_CARD_TEXT(card, 3, "setmac");
 660
 661         if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
 662                 QETH_CARD_TEXT(card, 3, "setmcINV");
 663                 return -EOPNOTSUPP;
 664         }
 665
 666         if (card->info.type == QETH_CARD_TYPE_OSN ||
 667             card->info.type == QETH_CARD_TYPE_OSM ||
 668             card->info.type == QETH_CARD_TYPE_OSX) {
 669                 QETH_CARD_TEXT(card, 3, "setmcTYP");
 670                 return -EOPNOTSUPP;
 671         }
 672         QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
 673         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 674                 QETH_CARD_TEXT(card, 3, "setmcREC");
 675                 return -ERESTARTSYS;
 676         }
 677         rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
 678         if (!rc || (rc == -ENOENT))
 679                 rc = qeth_l2_send_setmac(card, addr->sa_data);
 680         return rc ? -EINVAL : 0;
 681 }
 682
 683 static void qeth_promisc_to_bridge(struct qeth_card *card)
 684 {
 685         struct net_device *dev = card->dev;
 686         enum qeth_ipa_promisc_modes promisc_mode;
 687         int role;
 688         int rc;
 689
 690         QETH_CARD_TEXT(card, 3, "pmisc2br");
 691
 692         if (!card->options.sbp.reflect_promisc)
 693                 return;
 694         promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
 695                                                 : SET_PROMISC_MODE_OFF;
 696         if (promisc_mode == card->info.promisc_mode)
 697                 return;
 698
 699         if (promisc_mode == SET_PROMISC_MODE_ON) {
 700                 if (card->options.sbp.reflect_promisc_primary)
 701                         role = QETH_SBP_ROLE_PRIMARY;
 702                 else
 703                         role = QETH_SBP_ROLE_SECONDARY;
 704         } else
 705                 role = QETH_SBP_ROLE_NONE;
 706
 707         rc = qeth_bridgeport_setrole(card, role);
 708         QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
 709                         (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
 710         if (!rc) {
 711                 card->options.sbp.role = role;
 712                 card->info.promisc_mode = promisc_mode;
 713         }
 714 }
 715
 716 static void qeth_l2_set_multicast_list(struct net_device *dev)
 717 {
 718         struct qeth_card *card = dev->ml_priv;
 719         struct netdev_hw_addr *ha;
 720
 721         if (card->info.type == QETH_CARD_TYPE_OSN)
 722                 return ;
 723
 724         QETH_CARD_TEXT(card, 3, "setmulti");
 725         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
 726             (card->state != CARD_STATE_UP))
 727                 return;
 728         qeth_l2_del_all_mc(card, 1);
 729         spin_lock_bh(&card->mclock);
 730         netdev_for_each_mc_addr(ha, dev)
 731                 qeth_l2_add_mc(card, ha->addr, 0);
 732
 733         netdev_for_each_uc_addr(ha, dev)
 734                 qeth_l2_add_mc(card, ha->addr, 1);
 735
 736         spin_unlock_bh(&card->mclock);
 737         if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 738                 qeth_setadp_promisc_mode(card);
 739         else
 740                 qeth_promisc_to_bridge(card);
 741 }
 742
 743 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 744 {
 745         int rc;
 746         struct qeth_hdr *hdr = NULL;
 747         int elements = 0;
 748         struct qeth_card *card = dev->ml_priv;
 749         struct sk_buff *new_skb = skb;
 750         int cast_type = qeth_l2_get_cast_type(card, skb);
 751         struct qeth_qdio_out_q *queue;
 752         int tx_bytes = skb->len;
 753         int data_offset = -1;
 754         int elements_needed = 0;
 755         int hd_len = 0;
 756
 757         if (card->qdio.do_prio_queueing || (cast_type &&
 758                                         card->info.is_multicast_different))
 759                 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
 760                                         qeth_get_ip_version(skb), cast_type)];
 761         else
 762                 queue = card->qdio.out_qs[card->qdio.default_out_queue];
 763
 764         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
 765                 card->stats.tx_carrier_errors++;
 766                 goto tx_drop;
 767         }
 768
 769         if ((card->info.type == QETH_CARD_TYPE_OSN) &&
 770             (skb->protocol == htons(ETH_P_IPV6)))
 771                 goto tx_drop;
 772
 773         if (card->options.performance_stats) {
 774                 card->perf_stats.outbound_cnt++;
 775                 card->perf_stats.outbound_start_time = qeth_get_micros();
 776         }
 777         netif_stop_queue(dev);
 778
 779         if (card->info.type == QETH_CARD_TYPE_OSN)
 780                 hdr = (struct qeth_hdr *)skb->data;
 781         else {
 782                 if (card->info.type == QETH_CARD_TYPE_IQD) {
 783                         new_skb = skb;
 784                         data_offset = ETH_HLEN;
 785                         hd_len = ETH_HLEN;
 786                         hdr = kmem_cache_alloc(qeth_core_header_cache,
 787                                                 GFP_ATOMIC);
 788                         if (!hdr)
 789                                 goto tx_drop;
 790                         elements_needed++;
 791                         skb_reset_mac_header(new_skb);
 792                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 793                         hdr->hdr.l2.pkt_length = new_skb->len;
 794                         memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
 795                                 skb_mac_header(new_skb), ETH_HLEN);
 796                 } else {
 797                         /* create a clone with writeable headroom */
 798                         new_skb = skb_realloc_headroom(skb,
 799                                                 sizeof(struct qeth_hdr));
 800                         if (!new_skb)
 801                                 goto tx_drop;
 802                         hdr = (struct qeth_hdr *)skb_push(new_skb,
 803                                                 sizeof(struct qeth_hdr));
 804                         skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
 805                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 806                 }
 807         }
 808
 809         elements = qeth_get_elements_no(card, new_skb, elements_needed);
 810         if (!elements) {
 811                 if (data_offset >= 0)
 812                         kmem_cache_free(qeth_core_header_cache, hdr);
 813                 goto tx_drop;
 814         }
 815
 816         if (card->info.type != QETH_CARD_TYPE_IQD) {
 817                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
 818                     sizeof(struct qeth_hdr_layer2)))
 819                         goto tx_drop;
 820                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
 821                                          elements);
 822         } else
 823                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
 824                                         elements, data_offset, hd_len);
 825         if (!rc) {
 826                 card->stats.tx_packets++;
 827                 card->stats.tx_bytes += tx_bytes;
 828                 if (new_skb != skb)
 829                         dev_kfree_skb_any(skb);
 830                 rc = NETDEV_TX_OK;
 831         } else {
 832                 if (data_offset >= 0)
 833                         kmem_cache_free(qeth_core_header_cache, hdr);
 834
 835                 if (rc == -EBUSY) {
 836                         if (new_skb != skb)
 837                                 dev_kfree_skb_any(new_skb);
 838                         return NETDEV_TX_BUSY;
 839                 } else
 840                         goto tx_drop;
 841         }
 842
 843         netif_wake_queue(dev);
 844         if (card->options.performance_stats)
 845                 card->perf_stats.outbound_time += qeth_get_micros() -
 846                         card->perf_stats.outbound_start_time;
 847         return rc;
 848
 849 tx_drop:
 850         card->stats.tx_dropped++;
 851         card->stats.tx_errors++;
 852         if ((new_skb != skb) && new_skb)
 853                 dev_kfree_skb_any(new_skb);
 854         dev_kfree_skb_any(skb);
 855         netif_wake_queue(dev);
 856         return NETDEV_TX_OK;
 857 }
 858
 859 static int __qeth_l2_open(struct net_device *dev)
 860 {
 861         struct qeth_card *card = dev->ml_priv;
 862         int rc = 0;
 863
 864         QETH_CARD_TEXT(card, 4, "qethopen");
 865         if (card->state == CARD_STATE_UP)
 866                 return rc;
 867         if (card->state != CARD_STATE_SOFTSETUP)
 868                 return -ENODEV;
 869
 870         if ((card->info.type != QETH_CARD_TYPE_OSN) &&
 871              (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
 872                 QETH_CARD_TEXT(card, 4, "nomacadr");
 873                 return -EPERM;
 874         }
 875         card->data.state = CH_STATE_UP;
 876         card->state = CARD_STATE_UP;
 877         netif_start_queue(dev);
 878
 879         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
 880                 napi_enable(&card->napi);
 881                 napi_schedule(&card->napi);
 882         } else
 883                 rc = -EIO;
 884         return rc;
 885 }
 886
 887 static int qeth_l2_open(struct net_device *dev)
 888 {
 889         struct qeth_card *card = dev->ml_priv;
 890
 891         QETH_CARD_TEXT(card, 5, "qethope_");
 892         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 893                 QETH_CARD_TEXT(card, 3, "openREC");
 894                 return -ERESTARTSYS;
 895         }
 896         return __qeth_l2_open(dev);
 897 }
 898
 899 static int qeth_l2_stop(struct net_device *dev)
 900 {
 901         struct qeth_card *card = dev->ml_priv;
 902
 903         QETH_CARD_TEXT(card, 4, "qethstop");
 904         netif_tx_disable(dev);
 905         if (card->state == CARD_STATE_UP) {
 906                 card->state = CARD_STATE_SOFTSETUP;
 907                 napi_disable(&card->napi);
 908         }
 909         return 0;
 910 }
 911
 912 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
 913 {
 914         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 915
 916         qeth_l2_create_device_attributes(&gdev->dev);
 917         INIT_LIST_HEAD(&card->vid_list);
 918         INIT_LIST_HEAD(&card->mc_list);
 919         card->options.layer2 = 1;
 920         card->info.hwtrap = 0;
 921         return 0;
 922 }
 923
 924 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
 925 {
 926         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
 927
 928         qeth_l2_remove_device_attributes(&cgdev->dev);
 929         qeth_set_allowed_threads(card, 0, 1);
 930         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
 931
 932         if (cgdev->state == CCWGROUP_ONLINE)
 933                 qeth_l2_set_offline(cgdev);
 934
 935         if (card->dev) {
 936                 unregister_netdev(card->dev);
 937                 card->dev = NULL;
 938         }
 939         return;
 940 }
 941
 942 static const struct ethtool_ops qeth_l2_ethtool_ops = {
 943         .get_link = ethtool_op_get_link,
 944         .get_strings = qeth_core_get_strings,
 945         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 946         .get_sset_count = qeth_core_get_sset_count,
 947         .get_drvinfo = qeth_core_get_drvinfo,
 948         .get_settings = qeth_core_ethtool_get_settings,
 949 };
 950
 951 static const struct ethtool_ops qeth_l2_osn_ops = {
 952         .get_strings = qeth_core_get_strings,
 953         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 954         .get_sset_count = qeth_core_get_sset_count,
 955         .get_drvinfo = qeth_core_get_drvinfo,
 956 };
 957
 958 static const struct net_device_ops qeth_l2_netdev_ops = {
 959         .ndo_open               = qeth_l2_open,
 960         .ndo_stop               = qeth_l2_stop,
 961         .ndo_get_stats          = qeth_get_stats,
 962         .ndo_start_xmit         = qeth_l2_hard_start_xmit,
 963         .ndo_validate_addr      = eth_validate_addr,
 964         .ndo_set_rx_mode        = qeth_l2_set_multicast_list,
 965         .ndo_do_ioctl           = qeth_l2_do_ioctl,
 966         .ndo_set_mac_address    = qeth_l2_set_mac_address,
 967         .ndo_change_mtu         = qeth_change_mtu,
 968         .ndo_vlan_rx_add_vid    = qeth_l2_vlan_rx_add_vid,
 969         .ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
 970         .ndo_tx_timeout         = qeth_tx_timeout,
 971 };
 972
 973 static int qeth_l2_setup_netdev(struct qeth_card *card)
 974 {
 975         switch (card->info.type) {
 976         case QETH_CARD_TYPE_IQD:
 977                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
 978                                          ether_setup);
 979                 break;
 980         case QETH_CARD_TYPE_OSN:
 981                 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
 982                                          ether_setup);
 983                 card->dev->flags |= IFF_NOARP;
 984                 break;
 985         default:
 986                 card->dev = alloc_etherdev(0);
 987         }
 988
 989         if (!card->dev)
 990                 return -ENODEV;
 991
 992         card->dev->ml_priv = card;
 993         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
 994         card->dev->mtu = card->info.initial_mtu;
 995         card->dev->netdev_ops = &qeth_l2_netdev_ops;
 996         card->dev->ethtool_ops =
 997                 (card->info.type != QETH_CARD_TYPE_OSN) ?
 998                 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
 999         card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1000         card->info.broadcast_capable = 1;
1001         qeth_l2_request_initial_mac(card);
1002         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1003         netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1004         return register_netdev(card->dev);
1005 }
1006
1007 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1008 {
1009         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1010         int rc = 0;
1011         enum qeth_card_states recover_flag;
1012
1013         mutex_lock(&card->discipline_mutex);
1014         mutex_lock(&card->conf_mutex);
1015         QETH_DBF_TEXT(SETUP, 2, "setonlin");
1016         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1017
1018         recover_flag = card->state;
1019         rc = qeth_core_hardsetup_card(card);
1020         if (rc) {
1021                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1022                 rc = -ENODEV;
1023                 goto out_remove;
1024         }
1025         qeth_bridgeport_query_support(card);
1026         if (card->options.sbp.supported_funcs)
1027                 dev_info(&card->gdev->dev,
1028                 "The device represents a Bridge Capable Port\n");
1029         qeth_trace_features(card);
1030
1031         if (!card->dev && qeth_l2_setup_netdev(card)) {
1032                 rc = -ENODEV;
1033                 goto out_remove;
1034         }
1035
1036         if (card->info.type != QETH_CARD_TYPE_OSN)
1037                 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1038
1039         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1040                 if (card->info.hwtrap &&
1041                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1042                         card->info.hwtrap = 0;
1043         } else
1044                 card->info.hwtrap = 0;
1045
1046         qeth_l2_setup_bridgeport_attrs(card);
1047
1048         card->state = CARD_STATE_HARDSETUP;
1049         memset(&card->rx, 0, sizeof(struct qeth_rx));
1050         qeth_print_status_message(card);
1051
1052         /* softsetup */
1053         QETH_DBF_TEXT(SETUP, 2, "softsetp");
1054
1055         rc = qeth_send_startlan(card);
1056         if (rc) {
1057                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1058                 if (rc == 0xe080) {
1059                         dev_warn(&card->gdev->dev,
1060                                 "The LAN is offline\n");
1061                         card->lan_online = 0;
1062                         goto contin;
1063                 }
1064                 rc = -ENODEV;
1065                 goto out_remove;
1066         } else
1067                 card->lan_online = 1;
1068
1069 contin:
1070         if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1071             (card->info.type == QETH_CARD_TYPE_OSX)) {
1072                 /* configure isolation level */
1073                 rc = qeth_set_access_ctrl_online(card, 0);
1074                 if (rc) {
1075                         rc = -ENODEV;
1076                         goto out_remove;
1077                 }
1078         }
1079
1080         if (card->info.type != QETH_CARD_TYPE_OSN &&
1081             card->info.type != QETH_CARD_TYPE_OSM)
1082                 qeth_l2_process_vlans(card);
1083
1084         netif_tx_disable(card->dev);
1085
1086         rc = qeth_init_qdio_queues(card);
1087         if (rc) {
1088                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1089                 rc = -ENODEV;
1090                 goto out_remove;
1091         }
1092         card->state = CARD_STATE_SOFTSETUP;
1093         if (card->lan_online)
1094                 netif_carrier_on(card->dev);
1095         else
1096                 netif_carrier_off(card->dev);
1097
1098         qeth_set_allowed_threads(card, 0xffffffff, 0);
1099         if (recover_flag == CARD_STATE_RECOVER) {
1100                 if (recovery_mode &&
1101                     card->info.type != QETH_CARD_TYPE_OSN) {
1102                         __qeth_l2_open(card->dev);
1103                 } else {
1104                         rtnl_lock();
1105                         dev_open(card->dev);
1106                         rtnl_unlock();
1107                 }
1108                 /* this also sets saved unicast addresses */
1109                 qeth_l2_set_multicast_list(card->dev);
1110         }
1111         /* let user_space know that device is online */
1112         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1113         mutex_unlock(&card->conf_mutex);
1114         mutex_unlock(&card->discipline_mutex);
1115         return 0;
1116
1117 out_remove:
1118         qeth_l2_stop_card(card, 0);
1119         ccw_device_set_offline(CARD_DDEV(card));
1120         ccw_device_set_offline(CARD_WDEV(card));
1121         ccw_device_set_offline(CARD_RDEV(card));
1122         qdio_free(CARD_DDEV(card));
1123         if (recover_flag == CARD_STATE_RECOVER)
1124                 card->state = CARD_STATE_RECOVER;
1125         else
1126                 card->state = CARD_STATE_DOWN;
1127         mutex_unlock(&card->conf_mutex);
1128         mutex_unlock(&card->discipline_mutex);
1129         return rc;
1130 }
1131
1132 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1133 {
1134         return __qeth_l2_set_online(gdev, 0);
1135 }
1136
1137 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1138                                         int recovery_mode)
1139 {
1140         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1141         int rc = 0, rc2 = 0, rc3 = 0;
1142         enum qeth_card_states recover_flag;
1143
1144         mutex_lock(&card->discipline_mutex);
1145         mutex_lock(&card->conf_mutex);
1146         QETH_DBF_TEXT(SETUP, 3, "setoffl");
1147         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1148
1149         if (card->dev && netif_carrier_ok(card->dev))
1150                 netif_carrier_off(card->dev);
1151         recover_flag = card->state;
1152         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1153                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1154                 card->info.hwtrap = 1;
1155         }
1156         qeth_l2_stop_card(card, recovery_mode);
1157         rc  = ccw_device_set_offline(CARD_DDEV(card));
1158         rc2 = ccw_device_set_offline(CARD_WDEV(card));
1159         rc3 = ccw_device_set_offline(CARD_RDEV(card));
1160         if (!rc)
1161                 rc = (rc2) ? rc2 : rc3;
1162         if (rc)
1163                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1164         qdio_free(CARD_DDEV(card));
1165         if (recover_flag == CARD_STATE_UP)
1166                 card->state = CARD_STATE_RECOVER;
1167         /* let user_space know that device is offline */
1168         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1169         mutex_unlock(&card->conf_mutex);
1170         mutex_unlock(&card->discipline_mutex);
1171         return 0;
1172 }
1173
1174 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1175 {
1176         return __qeth_l2_set_offline(cgdev, 0);
1177 }
1178
1179 static int qeth_l2_recover(void *ptr)
1180 {
1181         struct qeth_card *card;
1182         int rc = 0;
1183
1184         card = (struct qeth_card *) ptr;
1185         QETH_CARD_TEXT(card, 2, "recover1");
1186         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1187                 return 0;
1188         QETH_CARD_TEXT(card, 2, "recover2");
1189         dev_warn(&card->gdev->dev,
1190                 "A recovery process has been started for the device\n");
1191         qeth_set_recovery_task(card);
1192         __qeth_l2_set_offline(card->gdev, 1);
1193         rc = __qeth_l2_set_online(card->gdev, 1);
1194         if (!rc)
1195                 dev_info(&card->gdev->dev,
1196                         "Device successfully recovered!\n");
1197         else {
1198                 qeth_close_dev(card);
1199                 dev_warn(&card->gdev->dev, "The qeth device driver "
1200                                 "failed to recover an error on the device\n");
1201         }
1202         qeth_clear_recovery_task(card);
1203         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1204         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1205         return 0;
1206 }
1207
1208 static int __init qeth_l2_init(void)
1209 {
1210         pr_info("register layer 2 discipline\n");
1211         return 0;
1212 }
1213
1214 static void __exit qeth_l2_exit(void)
1215 {
1216         pr_info("unregister layer 2 discipline\n");
1217 }
1218
1219 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1220 {
1221         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1222         qeth_set_allowed_threads(card, 0, 1);
1223         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1224                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1225         qeth_qdio_clear_card(card, 0);
1226         qeth_clear_qdio_buffers(card);
1227         qdio_free(CARD_DDEV(card));
1228 }
1229
1230 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1231 {
1232         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1233
1234         if (card->dev)
1235                 netif_device_detach(card->dev);
1236         qeth_set_allowed_threads(card, 0, 1);
1237         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1238         if (gdev->state == CCWGROUP_OFFLINE)
1239                 return 0;
1240         if (card->state == CARD_STATE_UP) {
1241                 if (card->info.hwtrap)
1242                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1243                 __qeth_l2_set_offline(card->gdev, 1);
1244         } else
1245                 __qeth_l2_set_offline(card->gdev, 0);
1246         return 0;
1247 }
1248
1249 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1250 {
1251         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1252         int rc = 0;
1253
1254         if (gdev->state == CCWGROUP_OFFLINE)
1255                 goto out;
1256
1257         if (card->state == CARD_STATE_RECOVER) {
1258                 rc = __qeth_l2_set_online(card->gdev, 1);
1259                 if (rc) {
1260                         rtnl_lock();
1261                         dev_close(card->dev);
1262                         rtnl_unlock();
1263                 }
1264         } else
1265                 rc = __qeth_l2_set_online(card->gdev, 0);
1266 out:
1267         qeth_set_allowed_threads(card, 0xffffffff, 0);
1268         if (card->dev)
1269                 netif_device_attach(card->dev);
1270         if (rc)
1271                 dev_warn(&card->gdev->dev, "The qeth device driver "
1272                         "failed to recover an error on the device\n");
1273         return rc;
1274 }
1275
1276 /* Returns zero if the command is successfully "consumed" */
1277 static int qeth_l2_control_event(struct qeth_card *card,
1278                                         struct qeth_ipa_cmd *cmd)
1279 {
1280         switch (cmd->hdr.command) {
1281         case IPA_CMD_SETBRIDGEPORT_OSA:
1282         case IPA_CMD_SETBRIDGEPORT_IQD:
1283                 if (cmd->data.sbp.hdr.command_code ==
1284                                 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1285                         qeth_bridge_state_change(card, cmd);
1286                         return 0;
1287                 } else
1288                         return 1;
1289         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1290                 qeth_bridge_host_event(card, cmd);
1291                 return 0;
1292         default:
1293                 return 1;
1294         }
1295 }
1296
1297 struct qeth_discipline qeth_l2_discipline = {
1298         .start_poll = qeth_qdio_start_poll,
1299         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1300         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1301         .recover = qeth_l2_recover,
1302         .setup = qeth_l2_probe_device,
1303         .remove = qeth_l2_remove_device,
1304         .set_online = qeth_l2_set_online,
1305         .set_offline = qeth_l2_set_offline,
1306         .shutdown = qeth_l2_shutdown,
1307         .freeze = qeth_l2_pm_suspend,
1308         .thaw = qeth_l2_pm_resume,
1309         .restore = qeth_l2_pm_resume,
1310         .control_event_handler = qeth_l2_control_event,
1311 };
1312 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1313
1314 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1315                            struct qeth_cmd_buffer *iob)
1316 {
1317         unsigned long flags;
1318         int rc = 0;
1319
1320         QETH_CARD_TEXT(card, 5, "osndctrd");
1321
1322         wait_event(card->wait_q,
1323                    atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1324         qeth_prepare_control_data(card, len, iob);
1325         QETH_CARD_TEXT(card, 6, "osnoirqp");
1326         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1327         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1328                               (addr_t) iob, 0, 0);
1329         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1330         if (rc) {
1331                 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1332                            "ccw_device_start rc = %i\n", rc);
1333                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1334                 qeth_release_buffer(iob->channel, iob);
1335                 atomic_set(&card->write.irq_pending, 0);
1336                 wake_up(&card->wait_q);
1337         }
1338         return rc;
1339 }
1340
1341 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1342                         struct qeth_cmd_buffer *iob, int data_len)
1343 {
1344         u16 s1, s2;
1345
1346         QETH_CARD_TEXT(card, 4, "osndipa");
1347
1348         qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1349         s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1350         s2 = (u16)data_len;
1351         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1352         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1353         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1354         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1355         return qeth_osn_send_control_data(card, s1, iob);
1356 }
1357
1358 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1359 {
1360         struct qeth_cmd_buffer *iob;
1361         struct qeth_card *card;
1362         int rc;
1363
1364         if (!dev)
1365                 return -ENODEV;
1366         card = dev->ml_priv;
1367         if (!card)
1368                 return -ENODEV;
1369         QETH_CARD_TEXT(card, 2, "osnsdmc");
1370         if (!qeth_card_hw_is_reachable(card))
1371                 return -ENODEV;
1372         iob = qeth_wait_for_buffer(&card->write);
1373         memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1374         rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1375         return rc;
1376 }
1377 EXPORT_SYMBOL(qeth_osn_assist);
1378
1379 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1380                   int (*assist_cb)(struct net_device *, void *),
1381                   int (*data_cb)(struct sk_buff *))
1382 {
1383         struct qeth_card *card;
1384
1385         *dev = qeth_l2_netdev_by_devno(read_dev_no);
1386         if (*dev == NULL)
1387                 return -ENODEV;
1388         card = (*dev)->ml_priv;
1389         if (!card)
1390                 return -ENODEV;
1391         QETH_CARD_TEXT(card, 2, "osnreg");
1392         if ((assist_cb == NULL) || (data_cb == NULL))
1393                 return -EINVAL;
1394         card->osn_info.assist_cb = assist_cb;
1395         card->osn_info.data_cb = data_cb;
1396         return 0;
1397 }
1398 EXPORT_SYMBOL(qeth_osn_register);
1399
1400 void qeth_osn_deregister(struct net_device *dev)
1401 {
1402         struct qeth_card *card;
1403
1404         if (!dev)
1405                 return;
1406         card = dev->ml_priv;
1407         if (!card)
1408                 return;
1409         QETH_CARD_TEXT(card, 2, "osndereg");
1410         card->osn_info.assist_cb = NULL;
1411         card->osn_info.data_cb = NULL;
1412         return;
1413 }
1414 EXPORT_SYMBOL(qeth_osn_deregister);
1415
1416 /* SETBRIDGEPORT support, async notifications */
1417
1418 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1419
1420 /**
1421  * qeth_bridge_emit_host_event() - bridgeport address change notification
1422  * @card:  qeth_card structure pointer, for udev events.
1423  * @evtype:  "normal" register/unregister, or abort, or reset. For abort
1424  *            and reset token and addr_lnid are unused and may be NULL.
1425  * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
1426  *                        object, 0 - addition of an object.
1427  *                        0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1428  * @token: "network token" structure identifying physical address of the port.
1429  * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1430  *
1431  * This function is called when registrations and deregistrations are
1432  * reported by the hardware, and also when notifications are enabled -
1433  * for all currently registered addresses.
1434  */
1435 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1436         enum qeth_an_event_type evtype,
1437         u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1438 {
1439         char str[7][32];
1440         char *env[8];
1441         int i = 0;
1442
1443         switch (evtype) {
1444         case anev_reg_unreg:
1445                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1446                                 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1447                                 ? "deregister" : "register");
1448                 env[i] = str[i]; i++;
1449                 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1450                         snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1451                                 addr_lnid->lnid);
1452                         env[i] = str[i]; i++;
1453                 }
1454                 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1455                         snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1456                                  addr_lnid->mac);
1457                         env[i] = str[i]; i++;
1458                 }
1459                 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1460                         token->cssid, token->ssid, token->devnum);
1461                 env[i] = str[i]; i++;
1462                 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1463                 env[i] = str[i]; i++;
1464                 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1465                                 token->chpid);
1466                 env[i] = str[i]; i++;
1467                 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1468                 env[i] = str[i]; i++;
1469                 break;
1470         case anev_abort:
1471                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1472                 env[i] = str[i]; i++;
1473                 break;
1474         case anev_reset:
1475                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1476                 env[i] = str[i]; i++;
1477                 break;
1478         }
1479         env[i] = NULL;
1480         kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1481 }
1482
1483 struct qeth_bridge_state_data {
1484         struct work_struct worker;
1485         struct qeth_card *card;
1486         struct qeth_sbp_state_change qports;
1487 };
1488
1489 static void qeth_bridge_state_change_worker(struct work_struct *work)
1490 {
1491         struct qeth_bridge_state_data *data =
1492                 container_of(work, struct qeth_bridge_state_data, worker);
1493         /* We are only interested in the first entry - local port */
1494         struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1495         char env_locrem[32];
1496         char env_role[32];
1497         char env_state[32];
1498         char *env[] = {
1499                 env_locrem,
1500                 env_role,
1501                 env_state,
1502                 NULL
1503         };
1504
1505         /* Role should not change by itself, but if it did, */
1506         /* information from the hardware is authoritative.  */
1507         mutex_lock(&data->card->conf_mutex);
1508         data->card->options.sbp.role = entry->role;
1509         mutex_unlock(&data->card->conf_mutex);
1510
1511         snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1512         snprintf(env_role, sizeof(env_role), "ROLE=%s",
1513                 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1514                 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1515                 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1516                 "<INVALID>");
1517         snprintf(env_state, sizeof(env_state), "STATE=%s",
1518                 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1519                 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1520                 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1521                 "<INVALID>");
1522         kobject_uevent_env(&data->card->gdev->dev.kobj,
1523                                 KOBJ_CHANGE, env);
1524         kfree(data);
1525 }
1526
1527 static void qeth_bridge_state_change(struct qeth_card *card,
1528                                         struct qeth_ipa_cmd *cmd)
1529 {
1530         struct qeth_sbp_state_change *qports =
1531                  &cmd->data.sbp.data.state_change;
1532         struct qeth_bridge_state_data *data;
1533         int extrasize;
1534
1535         QETH_CARD_TEXT(card, 2, "brstchng");
1536         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1537                 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1538                 return;
1539         }
1540         extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1541         data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1542                 GFP_ATOMIC);
1543         if (!data) {
1544                 QETH_CARD_TEXT(card, 2, "BPSalloc");
1545                 return;
1546         }
1547         INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1548         data->card = card;
1549         memcpy(&data->qports, qports,
1550                         sizeof(struct qeth_sbp_state_change) + extrasize);
1551         queue_work(qeth_wq, &data->worker);
1552 }
1553
1554 struct qeth_bridge_host_data {
1555         struct work_struct worker;
1556         struct qeth_card *card;
1557         struct qeth_ipacmd_addr_change hostevs;
1558 };
1559
1560 static void qeth_bridge_host_event_worker(struct work_struct *work)
1561 {
1562         struct qeth_bridge_host_data *data =
1563                 container_of(work, struct qeth_bridge_host_data, worker);
1564         int i;
1565
1566         if (data->hostevs.lost_event_mask) {
1567                 dev_info(&data->card->gdev->dev,
1568 "Address notification from the Bridge Port stopped %s (%s)\n",
1569                         data->card->dev->name,
1570                         (data->hostevs.lost_event_mask == 0x01)
1571                         ? "Overflow"
1572                         : (data->hostevs.lost_event_mask == 0x02)
1573                         ? "Bridge port state change"
1574                         : "Unknown reason");
1575                 mutex_lock(&data->card->conf_mutex);
1576                 data->card->options.sbp.hostnotification = 0;
1577                 mutex_unlock(&data->card->conf_mutex);
1578                 qeth_bridge_emit_host_event(data->card, anev_abort,
1579                         0, NULL, NULL);
1580         } else
1581                 for (i = 0; i < data->hostevs.num_entries; i++) {
1582                         struct qeth_ipacmd_addr_change_entry *entry =
1583                                         &data->hostevs.entry[i];
1584                         qeth_bridge_emit_host_event(data->card,
1585                                         anev_reg_unreg,
1586                                         entry->change_code,
1587                                         &entry->token, &entry->addr_lnid);
1588                 }
1589         kfree(data);
1590 }
1591
1592 static void qeth_bridge_host_event(struct qeth_card *card,
1593                                         struct qeth_ipa_cmd *cmd)
1594 {
1595         struct qeth_ipacmd_addr_change *hostevs =
1596                  &cmd->data.addrchange;
1597         struct qeth_bridge_host_data *data;
1598         int extrasize;
1599
1600         QETH_CARD_TEXT(card, 2, "brhostev");
1601         if (cmd->hdr.return_code != 0x0000) {
1602                 if (cmd->hdr.return_code == 0x0010) {
1603                         if (hostevs->lost_event_mask == 0x00)
1604                                 hostevs->lost_event_mask = 0xff;
1605                 } else {
1606                         QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1607                                 cmd->hdr.return_code);
1608                         return;
1609                 }
1610         }
1611         extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1612                                                 hostevs->num_entries;
1613         data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1614                 GFP_ATOMIC);
1615         if (!data) {
1616                 QETH_CARD_TEXT(card, 2, "BPHalloc");
1617                 return;
1618         }
1619         INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1620         data->card = card;
1621         memcpy(&data->hostevs, hostevs,
1622                         sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1623         queue_work(qeth_wq, &data->worker);
1624 }
1625
1626 /* SETBRIDGEPORT support; sending commands */
1627
1628 struct _qeth_sbp_cbctl {
1629         u16 ipa_rc;
1630         u16 cmd_rc;
1631         union {
1632                 u32 supported;
1633                 struct {
1634                         enum qeth_sbp_roles *role;
1635                         enum qeth_sbp_states *state;
1636                 } qports;
1637         } data;
1638 };
1639
1640 /**
1641  * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1642  * @card:                     qeth_card structure pointer, for debug messages.
1643  * @cbctl:                    state structure with hardware return codes.
1644  * @setcmd:                   IPA command code
1645  *
1646  * Returns negative errno-compatible error indication or 0 on success.
1647  */
1648 static int qeth_bridgeport_makerc(struct qeth_card *card,
1649         struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1650 {
1651         int rc;
1652         int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1653
1654         if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1655             (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1656                 switch (cbctl->cmd_rc) {
1657                 case 0x0000:
1658                         rc = 0;
1659                         break;
1660                 case 0x2B04:
1661                 case 0x0004:
1662                         rc = -EOPNOTSUPP;
1663                         break;
1664                 case 0x2B0C:
1665                 case 0x000C: /* Not configured as bridge Port */
1666                         rc = -ENODEV; /* maybe not the best code here? */
1667                         dev_err(&card->gdev->dev,
1668         "The device is not configured as a Bridge Port\n");
1669                         break;
1670                 case 0x2B14:
1671                 case 0x0014: /* Another device is Primary */
1672                         switch (setcmd) {
1673                         case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1674                                 rc = -EEXIST;
1675                                 dev_err(&card->gdev->dev,
1676         "The LAN already has a primary Bridge Port\n");
1677                                 break;
1678                         case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1679                                 rc = -EBUSY;
1680                                 dev_err(&card->gdev->dev,
1681         "The device is already a primary Bridge Port\n");
1682                                 break;
1683                         default:
1684                                 rc = -EIO;
1685                         }
1686                         break;
1687                 case 0x2B18:
1688                 case 0x0018: /* This device is currently Secondary */
1689                         rc = -EBUSY;
1690                         dev_err(&card->gdev->dev,
1691         "The device is already a secondary Bridge Port\n");
1692                         break;
1693                 case 0x2B1C:
1694                 case 0x001C: /* Limit for Secondary devices reached */
1695                         rc = -EEXIST;
1696                         dev_err(&card->gdev->dev,
1697         "The LAN cannot have more secondary Bridge Ports\n");
1698                         break;
1699                 case 0x2B24:
1700                 case 0x0024: /* This device is currently Primary */
1701                         rc = -EBUSY;
1702                         dev_err(&card->gdev->dev,
1703         "The device is already a primary Bridge Port\n");
1704                         break;
1705                 case 0x2B20:
1706                 case 0x0020: /* Not authorized by zManager */
1707                         rc = -EACCES;
1708                         dev_err(&card->gdev->dev,
1709         "The device is not authorized to be a Bridge Port\n");
1710                         break;
1711                 default:
1712                         rc = -EIO;
1713                 }
1714         else
1715                 switch (cbctl->ipa_rc) {
1716                 case IPA_RC_NOTSUPP:
1717                         rc = -EOPNOTSUPP;
1718                         break;
1719                 case IPA_RC_UNSUPPORTED_COMMAND:
1720                         rc = -EOPNOTSUPP;
1721                         break;
1722                 default:
1723                         rc = -EIO;
1724                 }
1725
1726         if (rc) {
1727                 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1728                 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1729         }
1730         return rc;
1731 }
1732
1733 static inline int ipa_cmd_sbp(struct qeth_card *card)
1734 {
1735         return (card->info.type == QETH_CARD_TYPE_IQD) ?
1736                 IPA_CMD_SETBRIDGEPORT_IQD :
1737                 IPA_CMD_SETBRIDGEPORT_OSA;
1738 }
1739
1740 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1741         struct qeth_reply *reply, unsigned long data)
1742 {
1743         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1744         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1745         QETH_CARD_TEXT(card, 2, "brqsupcb");
1746         cbctl->ipa_rc = cmd->hdr.return_code;
1747         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1748         if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1749                 cbctl->data.supported =
1750                         cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1751         } else {
1752                 cbctl->data.supported = 0;
1753         }
1754         return 0;
1755 }
1756
1757 /**
1758  * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1759  * @card:                            qeth_card structure pointer.
1760  *
1761  * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1762  * strucutre: card->options.sbp.supported_funcs.
1763  */
1764 static void qeth_bridgeport_query_support(struct qeth_card *card)
1765 {
1766         struct qeth_cmd_buffer *iob;
1767         struct qeth_ipa_cmd *cmd;
1768         struct _qeth_sbp_cbctl cbctl;
1769
1770         QETH_CARD_TEXT(card, 2, "brqsuppo");
1771         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1772         if (!iob)
1773                 return;
1774         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1775         cmd->data.sbp.hdr.cmdlength =
1776                 sizeof(struct qeth_ipacmd_sbp_hdr) +
1777                 sizeof(struct qeth_sbp_query_cmds_supp);
1778         cmd->data.sbp.hdr.command_code =
1779                 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1780         cmd->data.sbp.hdr.used_total = 1;
1781         cmd->data.sbp.hdr.seq_no = 1;
1782         if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1783                                                         (void *)&cbctl) ||
1784             qeth_bridgeport_makerc(card, &cbctl,
1785                                         IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1786                 /* non-zero makerc signifies failure, and produce messages */
1787                 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1788                 return;
1789         }
1790         card->options.sbp.supported_funcs = cbctl.data.supported;
1791 }
1792
1793 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1794         struct qeth_reply *reply, unsigned long data)
1795 {
1796         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1797         struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1798         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1799
1800         QETH_CARD_TEXT(card, 2, "brqprtcb");
1801         cbctl->ipa_rc = cmd->hdr.return_code;
1802         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1803         if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1804                 return 0;
1805         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1806                 cbctl->cmd_rc = 0xffff;
1807                 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1808                 return 0;
1809         }
1810         /* first entry contains the state of the local port */
1811         if (qports->num_entries > 0) {
1812                 if (cbctl->data.qports.role)
1813                         *cbctl->data.qports.role = qports->entry[0].role;
1814                 if (cbctl->data.qports.state)
1815                         *cbctl->data.qports.state = qports->entry[0].state;
1816         }
1817         return 0;
1818 }
1819
1820 /**
1821  * qeth_bridgeport_query_ports() - query local bridgeport status.
1822  * @card:                          qeth_card structure pointer.
1823  * @role:   Role of the port: 0-none, 1-primary, 2-secondary.
1824  * @state:  State of the port: 0-inactive, 1-standby, 2-active.
1825  *
1826  * Returns negative errno-compatible error indication or 0 on success.
1827  *
1828  * 'role' and 'state' are not updated in case of hardware operation failure.
1829  */
1830 int qeth_bridgeport_query_ports(struct qeth_card *card,
1831         enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1832 {
1833         int rc = 0;
1834         struct qeth_cmd_buffer *iob;
1835         struct qeth_ipa_cmd *cmd;
1836         struct _qeth_sbp_cbctl cbctl = {
1837                 .data = {
1838                         .qports = {
1839                                 .role = role,
1840                                 .state = state,
1841                         },
1842                 },
1843         };
1844
1845         QETH_CARD_TEXT(card, 2, "brqports");
1846         if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1847                 return -EOPNOTSUPP;
1848         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1849         if (!iob)
1850                 return -ENOMEM;
1851         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1852         cmd->data.sbp.hdr.cmdlength =
1853                 sizeof(struct qeth_ipacmd_sbp_hdr);
1854         cmd->data.sbp.hdr.command_code =
1855                 IPA_SBP_QUERY_BRIDGE_PORTS;
1856         cmd->data.sbp.hdr.used_total = 1;
1857         cmd->data.sbp.hdr.seq_no = 1;
1858         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1859                                 (void *)&cbctl);
1860         if (rc < 0)
1861                 return rc;
1862         return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1863 }
1864 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1865
1866 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1867         struct qeth_reply *reply, unsigned long data)
1868 {
1869         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1870         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1871         QETH_CARD_TEXT(card, 2, "brsetrcb");
1872         cbctl->ipa_rc = cmd->hdr.return_code;
1873         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1874         return 0;
1875 }
1876
1877 /**
1878  * qeth_bridgeport_setrole() - Assign primary role to the port.
1879  * @card:                      qeth_card structure pointer.
1880  * @role:                      Role to assign.
1881  *
1882  * Returns negative errno-compatible error indication or 0 on success.
1883  */
1884 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1885 {
1886         int rc = 0;
1887         int cmdlength;
1888         struct qeth_cmd_buffer *iob;
1889         struct qeth_ipa_cmd *cmd;
1890         struct _qeth_sbp_cbctl cbctl;
1891         enum qeth_ipa_sbp_cmd setcmd;
1892
1893         QETH_CARD_TEXT(card, 2, "brsetrol");
1894         switch (role) {
1895         case QETH_SBP_ROLE_NONE:
1896                 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1897                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1898                         sizeof(struct qeth_sbp_reset_role);
1899                 break;
1900         case QETH_SBP_ROLE_PRIMARY:
1901                 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1902                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1903                         sizeof(struct qeth_sbp_set_primary);
1904                 break;
1905         case QETH_SBP_ROLE_SECONDARY:
1906                 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1907                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1908                         sizeof(struct qeth_sbp_set_secondary);
1909                 break;
1910         default:
1911                 return -EINVAL;
1912         }
1913         if (!(card->options.sbp.supported_funcs & setcmd))
1914                 return -EOPNOTSUPP;
1915         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1916         if (!iob)
1917                 return -ENOMEM;
1918         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1919         cmd->data.sbp.hdr.cmdlength = cmdlength;
1920         cmd->data.sbp.hdr.command_code = setcmd;
1921         cmd->data.sbp.hdr.used_total = 1;
1922         cmd->data.sbp.hdr.seq_no = 1;
1923         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1924                                 (void *)&cbctl);
1925         if (rc < 0)
1926                 return rc;
1927         return qeth_bridgeport_makerc(card, &cbctl, setcmd);
1928 }
1929
1930 /**
1931  * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1932  * @card:                     qeth_card structure pointer, for debug messages.
1933  *
1934  * Returns negative errno-compatible error indication or 0 on success.
1935  */
1936 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1937 {
1938         int rc;
1939
1940         if (pnso_rc == 0)
1941                 switch (response) {
1942                 case 0x0001:
1943                         rc = 0;
1944                         break;
1945                 case 0x0004:
1946                 case 0x0100:
1947                 case 0x0106:
1948                         rc = -EOPNOTSUPP;
1949                         dev_err(&card->gdev->dev,
1950                                 "Setting address notification failed\n");
1951                         break;
1952                 case 0x0107:
1953                         rc = -EAGAIN;
1954                         break;
1955                 default:
1956                         rc = -EIO;
1957                 }
1958         else
1959                 rc = -EIO;
1960
1961         if (rc) {
1962                 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1963                 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1964         }
1965         return rc;
1966 }
1967
1968 static void qeth_bridgeport_an_set_cb(void *priv,
1969                 enum qdio_brinfo_entry_type type, void *entry)
1970 {
1971         struct qeth_card *card = (struct qeth_card *)priv;
1972         struct qdio_brinfo_entry_l2 *l2entry;
1973         u8 code;
1974
1975         if (type != l2_addr_lnid) {
1976                 WARN_ON_ONCE(1);
1977                 return;
1978         }
1979
1980         l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1981         code = IPA_ADDR_CHANGE_CODE_MACADDR;
1982         if (l2entry->addr_lnid.lnid)
1983                 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1984         qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1985                 (struct net_if_token *)&l2entry->nit,
1986                 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1987 }
1988
1989 /**
1990  * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1991  * @card:                     qeth_card structure pointer.
1992  * @enable:                   0 - disable, non-zero - enable notifications
1993  *
1994  * Returns negative errno-compatible error indication or 0 on success.
1995  *
1996  * On enable, emits a series of address notifications udev events for all
1997  * currently registered hosts.
1998  */
1999 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2000 {
2001         int rc;
2002         u16 response;
2003         struct ccw_device *ddev;
2004         struct subchannel_id schid;
2005
2006         if (!card)
2007                 return -EINVAL;
2008         if (!card->options.sbp.supported_funcs)
2009                 return -EOPNOTSUPP;
2010         ddev = CARD_DDEV(card);
2011         ccw_device_get_schid(ddev, &schid);
2012
2013         if (enable) {
2014                 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2015                 rc = qdio_pnso_brinfo(schid, 1, &response,
2016                         qeth_bridgeport_an_set_cb, card);
2017         } else
2018                 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2019         return qeth_anset_makerc(card, rc, response);
2020 }
2021 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2022
2023 module_init(qeth_l2_init);
2024 module_exit(qeth_l2_exit);
2025 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2026 MODULE_DESCRIPTION("qeth layer 2 discipline");
2027 MODULE_LICENSE("GPL");