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 ((card->state != CARD_STATE_UP) &&
  49                 (card->state != CARD_STATE_SOFTSETUP))
  50                 return -ENODEV;
  51
  52         if (card->info.type == QETH_CARD_TYPE_OSN)
  53                 return -EPERM;
  54
  55         switch (cmd) {
  56         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
  57                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
  58                 break;
  59         case SIOC_QETH_GET_CARD_TYPE:
  60                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
  61                      card->info.type == QETH_CARD_TYPE_OSM ||
  62                      card->info.type == QETH_CARD_TYPE_OSX) &&
  63                     !card->info.guestlan)
  64                         return 1;
  65                 return 0;
  66                 break;
  67         case SIOCGMIIPHY:
  68                 mii_data = if_mii(rq);
  69                 mii_data->phy_id = 0;
  70                 break;
  71         case SIOCGMIIREG:
  72                 mii_data = if_mii(rq);
  73                 if (mii_data->phy_id != 0)
  74                         rc = -EINVAL;
  75                 else
  76                         mii_data->val_out = qeth_mdio_read(dev,
  77                                 mii_data->phy_id, mii_data->reg_num);
  78                 break;
  79         case SIOC_QETH_QUERY_OAT:
  80                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
  81                 break;
  82         default:
  83                 rc = -EOPNOTSUPP;
  84         }
  85         if (rc)
  86                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
  87         return rc;
  88 }
  89
  90 static int qeth_l2_verify_dev(struct net_device *dev)
  91 {
  92         struct qeth_card *card;
  93         unsigned long flags;
  94         int rc = 0;
  95
  96         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
  97         list_for_each_entry(card, &qeth_core_card_list.list, list) {
  98                 if (card->dev == dev) {
  99                         rc = QETH_REAL_CARD;
 100                         break;
 101                 }
 102         }
 103         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
 104
 105         return rc;
 106 }
 107
 108 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
 109 {
 110         struct qeth_card *card;
 111         struct net_device *ndev;
 112         __u16 temp_dev_no;
 113         unsigned long flags;
 114         struct ccw_dev_id read_devid;
 115
 116         ndev = NULL;
 117         memcpy(&temp_dev_no, read_dev_no, 2);
 118         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
 119         list_for_each_entry(card, &qeth_core_card_list.list, list) {
 120                 ccw_device_get_id(CARD_RDEV(card), &read_devid);
 121                 if (read_devid.devno == temp_dev_no) {
 122                         ndev = card->dev;
 123                         break;
 124                 }
 125         }
 126         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
 127         return ndev;
 128 }
 129
 130 static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
 131 {
 132         int rc;
 133
 134         if (retcode)
 135                 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
 136         switch (retcode) {
 137         case IPA_RC_SUCCESS:
 138                 rc = 0;
 139                 break;
 140         case IPA_RC_L2_UNSUPPORTED_CMD:
 141                 rc = -ENOSYS;
 142                 break;
 143         case IPA_RC_L2_ADDR_TABLE_FULL:
 144                 rc = -ENOSPC;
 145                 break;
 146         case IPA_RC_L2_DUP_MAC:
 147         case IPA_RC_L2_DUP_LAYER3_MAC:
 148                 rc = -EEXIST;
 149                 break;
 150         case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
 151         case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
 152                 rc = -EPERM;
 153                 break;
 154         case IPA_RC_L2_MAC_NOT_FOUND:
 155                 rc = -ENOENT;
 156                 break;
 157         case -ENOMEM:
 158                 rc = -ENOMEM;
 159                 break;
 160         default:
 161                 rc = -EIO;
 162                 break;
 163         }
 164         return rc;
 165 }
 166
 167 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
 168 {
 169         int rc;
 170
 171         QETH_CARD_TEXT(card, 2, "L2Sgmac");
 172         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 173                                         IPA_CMD_SETGMAC));
 174         if (rc == -EEXIST)
 175                 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
 176                         mac, QETH_CARD_IFNAME(card));
 177         else if (rc)
 178                 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
 179                         mac, QETH_CARD_IFNAME(card), rc);
 180         return rc;
 181 }
 182
 183 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
 184 {
 185         int rc;
 186
 187         QETH_CARD_TEXT(card, 2, "L2Dgmac");
 188         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 189                                         IPA_CMD_DELGMAC));
 190         if (rc)
 191                 QETH_DBF_MESSAGE(2,
 192                         "Could not delete group MAC %pM on %s: %d\n",
 193                         mac, QETH_CARD_IFNAME(card), rc);
 194         return rc;
 195 }
 196
 197 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
 198 {
 199         struct qeth_mc_mac *mc;
 200         int rc;
 201
 202         mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
 203
 204         if (!mc)
 205                 return;
 206
 207         memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
 208         mc->mc_addrlen = OSA_ADDR_LEN;
 209         mc->is_vmac = vmac;
 210
 211         if (vmac) {
 212                 rc = qeth_setdel_makerc(card,
 213                         qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC));
 214         } else {
 215                 rc = qeth_setdel_makerc(card,
 216                         qeth_l2_send_setgroupmac(card, mac));
 217         }
 218
 219         if (!rc)
 220                 list_add_tail(&mc->list, &card->mc_list);
 221         else
 222                 kfree(mc);
 223 }
 224
 225 static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
 226 {
 227         struct qeth_mc_mac *mc, *tmp;
 228
 229         spin_lock_bh(&card->mclock);
 230         list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
 231                 if (del) {
 232                         if (mc->is_vmac)
 233                                 qeth_l2_send_setdelmac(card, mc->mc_addr,
 234                                         IPA_CMD_DELVMAC);
 235                         else
 236                                 qeth_l2_send_delgroupmac(card, mc->mc_addr);
 237                 }
 238                 list_del(&mc->list);
 239                 kfree(mc);
 240         }
 241         spin_unlock_bh(&card->mclock);
 242 }
 243
 244 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
 245                         struct sk_buff *skb)
 246 {
 247         if (card->info.type == QETH_CARD_TYPE_OSN)
 248                 return RTN_UNSPEC;
 249         if (is_broadcast_ether_addr(skb->data))
 250                 return RTN_BROADCAST;
 251         if (is_multicast_ether_addr(skb->data))
 252                 return RTN_MULTICAST;
 253         return RTN_UNSPEC;
 254 }
 255
 256 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
 257                         struct sk_buff *skb, int cast_type)
 258 {
 259         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
 260
 261         memset(hdr, 0, sizeof(struct qeth_hdr));
 262         hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
 263
 264         /* set byte byte 3 to casting flags */
 265         if (cast_type == RTN_MULTICAST)
 266                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 267         else if (cast_type == RTN_BROADCAST)
 268                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
 269         else
 270                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 271
 272         hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
 273         /* VSWITCH relies on the VLAN
 274          * information to be present in
 275          * the QDIO header */
 276         if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
 277                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
 278                 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
 279         }
 280 }
 281
 282 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
 283                         struct qeth_reply *reply, unsigned long data)
 284 {
 285         struct qeth_ipa_cmd *cmd;
 286
 287         QETH_CARD_TEXT(card, 2, "L2sdvcb");
 288         cmd = (struct qeth_ipa_cmd *) data;
 289         if (cmd->hdr.return_code) {
 290                 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
 291                           "Continuing\n", cmd->data.setdelvlan.vlan_id,
 292                           QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 293                 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
 294                 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
 295         }
 296         return 0;
 297 }
 298
 299 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
 300                                 enum qeth_ipa_cmds ipacmd)
 301 {
 302         struct qeth_ipa_cmd *cmd;
 303         struct qeth_cmd_buffer *iob;
 304
 305         QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
 306         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 307         if (!iob)
 308                 return -ENOMEM;
 309         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 310         cmd->data.setdelvlan.vlan_id = i;
 311         return qeth_send_ipa_cmd(card, iob,
 312                                  qeth_l2_send_setdelvlan_cb, NULL);
 313 }
 314
 315 static void qeth_l2_process_vlans(struct qeth_card *card)
 316 {
 317         struct qeth_vlan_vid *id;
 318         QETH_CARD_TEXT(card, 3, "L2prcvln");
 319         spin_lock_bh(&card->vlanlock);
 320         list_for_each_entry(id, &card->vid_list, list) {
 321                 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
 322         }
 323         spin_unlock_bh(&card->vlanlock);
 324 }
 325
 326 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
 327                                    __be16 proto, u16 vid)
 328 {
 329         struct qeth_card *card = dev->ml_priv;
 330         struct qeth_vlan_vid *id;
 331         int rc;
 332
 333         QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
 334         if (!vid)
 335                 return 0;
 336         if (card->info.type == QETH_CARD_TYPE_OSM) {
 337                 QETH_CARD_TEXT(card, 3, "aidOSM");
 338                 return 0;
 339         }
 340         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 341                 QETH_CARD_TEXT(card, 3, "aidREC");
 342                 return 0;
 343         }
 344         id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
 345         if (id) {
 346                 id->vid = vid;
 347                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
 348                 if (rc) {
 349                         kfree(id);
 350                         return rc;
 351                 }
 352                 spin_lock_bh(&card->vlanlock);
 353                 list_add_tail(&id->list, &card->vid_list);
 354                 spin_unlock_bh(&card->vlanlock);
 355         } else {
 356                 return -ENOMEM;
 357         }
 358         return 0;
 359 }
 360
 361 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
 362                                     __be16 proto, u16 vid)
 363 {
 364         struct qeth_vlan_vid *id, *tmpid = NULL;
 365         struct qeth_card *card = dev->ml_priv;
 366         int rc = 0;
 367
 368         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
 369         if (card->info.type == QETH_CARD_TYPE_OSM) {
 370                 QETH_CARD_TEXT(card, 3, "kidOSM");
 371                 return 0;
 372         }
 373         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 374                 QETH_CARD_TEXT(card, 3, "kidREC");
 375                 return 0;
 376         }
 377         spin_lock_bh(&card->vlanlock);
 378         list_for_each_entry(id, &card->vid_list, list) {
 379                 if (id->vid == vid) {
 380                         list_del(&id->list);
 381                         tmpid = id;
 382                         break;
 383                 }
 384         }
 385         spin_unlock_bh(&card->vlanlock);
 386         if (tmpid) {
 387                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
 388                 kfree(tmpid);
 389         }
 390         qeth_l2_set_multicast_list(card->dev);
 391         return rc;
 392 }
 393
 394 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
 395 {
 396         int rc = 0;
 397
 398         QETH_DBF_TEXT(SETUP , 2, "stopcard");
 399         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 400
 401         qeth_set_allowed_threads(card, 0, 1);
 402         if (card->read.state == CH_STATE_UP &&
 403             card->write.state == CH_STATE_UP &&
 404             (card->state == CARD_STATE_UP)) {
 405                 if (recovery_mode &&
 406                     card->info.type != QETH_CARD_TYPE_OSN) {
 407                         qeth_l2_stop(card->dev);
 408                 } else {
 409                         rtnl_lock();
 410                         dev_close(card->dev);
 411                         rtnl_unlock();
 412                 }
 413                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 414                 card->state = CARD_STATE_SOFTSETUP;
 415         }
 416         if (card->state == CARD_STATE_SOFTSETUP) {
 417                 qeth_l2_del_all_mc(card, 0);
 418                 qeth_clear_ipacmd_list(card);
 419                 card->state = CARD_STATE_HARDSETUP;
 420         }
 421         if (card->state == CARD_STATE_HARDSETUP) {
 422                 qeth_qdio_clear_card(card, 0);
 423                 qeth_clear_qdio_buffers(card);
 424                 qeth_clear_working_pool_list(card);
 425                 card->state = CARD_STATE_DOWN;
 426         }
 427         if (card->state == CARD_STATE_DOWN) {
 428                 qeth_clear_cmd_buffers(&card->read);
 429                 qeth_clear_cmd_buffers(&card->write);
 430         }
 431         return rc;
 432 }
 433
 434 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
 435                                 int budget, int *done)
 436 {
 437         int work_done = 0;
 438         struct sk_buff *skb;
 439         struct qeth_hdr *hdr;
 440         unsigned int len;
 441
 442         *done = 0;
 443         WARN_ON_ONCE(!budget);
 444         while (budget) {
 445                 skb = qeth_core_get_next_skb(card,
 446                         &card->qdio.in_q->bufs[card->rx.b_index],
 447                         &card->rx.b_element, &card->rx.e_offset, &hdr);
 448                 if (!skb) {
 449                         *done = 1;
 450                         break;
 451                 }
 452                 skb->dev = card->dev;
 453                 switch (hdr->hdr.l2.id) {
 454                 case QETH_HEADER_TYPE_LAYER2:
 455                         skb->pkt_type = PACKET_HOST;
 456                         skb->protocol = eth_type_trans(skb, skb->dev);
 457                         skb->ip_summed = CHECKSUM_NONE;
 458                         if (skb->protocol == htons(ETH_P_802_2))
 459                                 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
 460                         len = skb->len;
 461                         netif_receive_skb(skb);
 462                         break;
 463                 case QETH_HEADER_TYPE_OSN:
 464                         if (card->info.type == QETH_CARD_TYPE_OSN) {
 465                                 skb_push(skb, sizeof(struct qeth_hdr));
 466                                 skb_copy_to_linear_data(skb, hdr,
 467                                                 sizeof(struct qeth_hdr));
 468                                 len = skb->len;
 469                                 card->osn_info.data_cb(skb);
 470                                 break;
 471                         }
 472                         /* else unknown */
 473                 default:
 474                         dev_kfree_skb_any(skb);
 475                         QETH_CARD_TEXT(card, 3, "inbunkno");
 476                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
 477                         continue;
 478                 }
 479                 work_done++;
 480                 budget--;
 481                 card->stats.rx_packets++;
 482                 card->stats.rx_bytes += len;
 483         }
 484         return work_done;
 485 }
 486
 487 static int qeth_l2_poll(struct napi_struct *napi, int budget)
 488 {
 489         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
 490         int work_done = 0;
 491         struct qeth_qdio_buffer *buffer;
 492         int done;
 493         int new_budget = budget;
 494
 495         if (card->options.performance_stats) {
 496                 card->perf_stats.inbound_cnt++;
 497                 card->perf_stats.inbound_start_time = qeth_get_micros();
 498         }
 499
 500         while (1) {
 501                 if (!card->rx.b_count) {
 502                         card->rx.qdio_err = 0;
 503                         card->rx.b_count = qdio_get_next_buffers(
 504                                 card->data.ccwdev, 0, &card->rx.b_index,
 505                                 &card->rx.qdio_err);
 506                         if (card->rx.b_count <= 0) {
 507                                 card->rx.b_count = 0;
 508                                 break;
 509                         }
 510                         card->rx.b_element =
 511                                 &card->qdio.in_q->bufs[card->rx.b_index]
 512                                 .buffer->element[0];
 513                         card->rx.e_offset = 0;
 514                 }
 515
 516                 while (card->rx.b_count) {
 517                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
 518                         if (!(card->rx.qdio_err &&
 519                             qeth_check_qdio_errors(card, buffer->buffer,
 520                             card->rx.qdio_err, "qinerr")))
 521                                 work_done += qeth_l2_process_inbound_buffer(
 522                                         card, new_budget, &done);
 523                         else
 524                                 done = 1;
 525
 526                         if (done) {
 527                                 if (card->options.performance_stats)
 528                                         card->perf_stats.bufs_rec++;
 529                                 qeth_put_buffer_pool_entry(card,
 530                                         buffer->pool_entry);
 531                                 qeth_queue_input_buffer(card, card->rx.b_index);
 532                                 card->rx.b_count--;
 533                                 if (card->rx.b_count) {
 534                                         card->rx.b_index =
 535                                                 (card->rx.b_index + 1) %
 536                                                 QDIO_MAX_BUFFERS_PER_Q;
 537                                         card->rx.b_element =
 538                                                 &card->qdio.in_q
 539                                                 ->bufs[card->rx.b_index]
 540                                                 .buffer->element[0];
 541                                         card->rx.e_offset = 0;
 542                                 }
 543                         }
 544
 545                         if (work_done >= budget)
 546                                 goto out;
 547                         else
 548                                 new_budget = budget - work_done;
 549                 }
 550         }
 551
 552         napi_complete(napi);
 553         if (qdio_start_irq(card->data.ccwdev, 0))
 554                 napi_schedule(&card->napi);
 555 out:
 556         if (card->options.performance_stats)
 557                 card->perf_stats.inbound_time += qeth_get_micros() -
 558                         card->perf_stats.inbound_start_time;
 559         return work_done;
 560 }
 561
 562 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
 563                            enum qeth_ipa_cmds ipacmd)
 564 {
 565         struct qeth_ipa_cmd *cmd;
 566         struct qeth_cmd_buffer *iob;
 567
 568         QETH_CARD_TEXT(card, 2, "L2sdmac");
 569         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 570         if (!iob)
 571                 return -ENOMEM;
 572         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 573         cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
 574         memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
 575         return qeth_send_ipa_cmd(card, iob, NULL, NULL);
 576 }
 577
 578 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
 579 {
 580         int rc;
 581
 582         QETH_CARD_TEXT(card, 2, "L2Setmac");
 583         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 584                                         IPA_CMD_SETVMAC));
 585         if (rc == 0) {
 586                 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 587                 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
 588                 dev_info(&card->gdev->dev,
 589                         "MAC address %pM successfully registered on device %s\n",
 590                         card->dev->dev_addr, card->dev->name);
 591         } else {
 592                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 593                 switch (rc) {
 594                 case -EEXIST:
 595                         dev_warn(&card->gdev->dev,
 596                                 "MAC address %pM already exists\n", mac);
 597                         break;
 598                 case -EPERM:
 599                         dev_warn(&card->gdev->dev,
 600                                 "MAC address %pM is not authorized\n", mac);
 601                         break;
 602                 }
 603         }
 604         return rc;
 605 }
 606
 607 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
 608 {
 609         int rc;
 610
 611         QETH_CARD_TEXT(card, 2, "L2Delmac");
 612         if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
 613                 return 0;
 614         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 615                                         IPA_CMD_DELVMAC));
 616         if (rc == 0)
 617                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 618         return rc;
 619 }
 620
 621 static int qeth_l2_request_initial_mac(struct qeth_card *card)
 622 {
 623         int rc = 0;
 624         char vendor_pre[] = {0x02, 0x00, 0x00};
 625
 626         QETH_DBF_TEXT(SETUP, 2, "doL2init");
 627         QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
 628
 629         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 630                 rc = qeth_query_setadapterparms(card);
 631                 if (rc) {
 632                         QETH_DBF_MESSAGE(2, "could not query adapter "
 633                                 "parameters on device %s: x%x\n",
 634                                 CARD_BUS_ID(card), rc);
 635                 }
 636         }
 637
 638         if (card->info.type == QETH_CARD_TYPE_IQD ||
 639             card->info.type == QETH_CARD_TYPE_OSM ||
 640             card->info.type == QETH_CARD_TYPE_OSX ||
 641             card->info.guestlan) {
 642                 rc = qeth_setadpparms_change_macaddr(card);
 643                 if (rc) {
 644                         QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
 645                                 "device %s: x%x\n", CARD_BUS_ID(card), rc);
 646                         QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
 647                         return rc;
 648                 }
 649                 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
 650         } else {
 651                 eth_random_addr(card->dev->dev_addr);
 652                 memcpy(card->dev->dev_addr, vendor_pre, 3);
 653         }
 654         return 0;
 655 }
 656
 657 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
 658 {
 659         struct sockaddr *addr = p;
 660         struct qeth_card *card = dev->ml_priv;
 661         int rc = 0;
 662
 663         QETH_CARD_TEXT(card, 3, "setmac");
 664
 665         if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
 666                 QETH_CARD_TEXT(card, 3, "setmcINV");
 667                 return -EOPNOTSUPP;
 668         }
 669
 670         if (card->info.type == QETH_CARD_TYPE_OSN ||
 671             card->info.type == QETH_CARD_TYPE_OSM ||
 672             card->info.type == QETH_CARD_TYPE_OSX) {
 673                 QETH_CARD_TEXT(card, 3, "setmcTYP");
 674                 return -EOPNOTSUPP;
 675         }
 676         QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
 677         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 678                 QETH_CARD_TEXT(card, 3, "setmcREC");
 679                 return -ERESTARTSYS;
 680         }
 681         rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
 682         if (!rc || (rc == -ENOENT))
 683                 rc = qeth_l2_send_setmac(card, addr->sa_data);
 684         return rc ? -EINVAL : 0;
 685 }
 686
 687 static void qeth_l2_set_multicast_list(struct net_device *dev)
 688 {
 689         struct qeth_card *card = dev->ml_priv;
 690         struct netdev_hw_addr *ha;
 691
 692         if (card->info.type == QETH_CARD_TYPE_OSN)
 693                 return ;
 694
 695         QETH_CARD_TEXT(card, 3, "setmulti");
 696         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
 697             (card->state != CARD_STATE_UP))
 698                 return;
 699         qeth_l2_del_all_mc(card, 1);
 700         spin_lock_bh(&card->mclock);
 701         netdev_for_each_mc_addr(ha, dev)
 702                 qeth_l2_add_mc(card, ha->addr, 0);
 703
 704         netdev_for_each_uc_addr(ha, dev)
 705                 qeth_l2_add_mc(card, ha->addr, 1);
 706
 707         spin_unlock_bh(&card->mclock);
 708         if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 709                 return;
 710         qeth_setadp_promisc_mode(card);
 711 }
 712
 713 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 714 {
 715         int rc;
 716         struct qeth_hdr *hdr = NULL;
 717         int elements = 0;
 718         struct qeth_card *card = dev->ml_priv;
 719         struct sk_buff *new_skb = skb;
 720         int cast_type = qeth_l2_get_cast_type(card, skb);
 721         struct qeth_qdio_out_q *queue;
 722         int tx_bytes = skb->len;
 723         int data_offset = -1;
 724         int elements_needed = 0;
 725         int hd_len = 0;
 726
 727         if (card->qdio.do_prio_queueing || (cast_type &&
 728                                         card->info.is_multicast_different))
 729                 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
 730                                         qeth_get_ip_version(skb), cast_type)];
 731         else
 732                 queue = card->qdio.out_qs[card->qdio.default_out_queue];
 733
 734         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
 735                 card->stats.tx_carrier_errors++;
 736                 goto tx_drop;
 737         }
 738
 739         if ((card->info.type == QETH_CARD_TYPE_OSN) &&
 740             (skb->protocol == htons(ETH_P_IPV6)))
 741                 goto tx_drop;
 742
 743         if (card->options.performance_stats) {
 744                 card->perf_stats.outbound_cnt++;
 745                 card->perf_stats.outbound_start_time = qeth_get_micros();
 746         }
 747         netif_stop_queue(dev);
 748
 749         if (card->info.type == QETH_CARD_TYPE_OSN)
 750                 hdr = (struct qeth_hdr *)skb->data;
 751         else {
 752                 if (card->info.type == QETH_CARD_TYPE_IQD) {
 753                         new_skb = skb;
 754                         data_offset = ETH_HLEN;
 755                         hd_len = ETH_HLEN;
 756                         hdr = kmem_cache_alloc(qeth_core_header_cache,
 757                                                 GFP_ATOMIC);
 758                         if (!hdr)
 759                                 goto tx_drop;
 760                         elements_needed++;
 761                         skb_reset_mac_header(new_skb);
 762                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 763                         hdr->hdr.l2.pkt_length = new_skb->len;
 764                         memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
 765                                 skb_mac_header(new_skb), ETH_HLEN);
 766                 } else {
 767                         /* create a clone with writeable headroom */
 768                         new_skb = skb_realloc_headroom(skb,
 769                                                 sizeof(struct qeth_hdr));
 770                         if (!new_skb)
 771                                 goto tx_drop;
 772                         hdr = (struct qeth_hdr *)skb_push(new_skb,
 773                                                 sizeof(struct qeth_hdr));
 774                         skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
 775                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 776                 }
 777         }
 778
 779         elements = qeth_get_elements_no(card, new_skb, elements_needed);
 780         if (!elements) {
 781                 if (data_offset >= 0)
 782                         kmem_cache_free(qeth_core_header_cache, hdr);
 783                 goto tx_drop;
 784         }
 785
 786         if (card->info.type != QETH_CARD_TYPE_IQD) {
 787                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
 788                     sizeof(struct qeth_hdr_layer2)))
 789                         goto tx_drop;
 790                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
 791                                          elements);
 792         } else
 793                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
 794                                         elements, data_offset, hd_len);
 795         if (!rc) {
 796                 card->stats.tx_packets++;
 797                 card->stats.tx_bytes += tx_bytes;
 798                 if (new_skb != skb)
 799                         dev_kfree_skb_any(skb);
 800                 rc = NETDEV_TX_OK;
 801         } else {
 802                 if (data_offset >= 0)
 803                         kmem_cache_free(qeth_core_header_cache, hdr);
 804
 805                 if (rc == -EBUSY) {
 806                         if (new_skb != skb)
 807                                 dev_kfree_skb_any(new_skb);
 808                         return NETDEV_TX_BUSY;
 809                 } else
 810                         goto tx_drop;
 811         }
 812
 813         netif_wake_queue(dev);
 814         if (card->options.performance_stats)
 815                 card->perf_stats.outbound_time += qeth_get_micros() -
 816                         card->perf_stats.outbound_start_time;
 817         return rc;
 818
 819 tx_drop:
 820         card->stats.tx_dropped++;
 821         card->stats.tx_errors++;
 822         if ((new_skb != skb) && new_skb)
 823                 dev_kfree_skb_any(new_skb);
 824         dev_kfree_skb_any(skb);
 825         netif_wake_queue(dev);
 826         return NETDEV_TX_OK;
 827 }
 828
 829 static int __qeth_l2_open(struct net_device *dev)
 830 {
 831         struct qeth_card *card = dev->ml_priv;
 832         int rc = 0;
 833
 834         QETH_CARD_TEXT(card, 4, "qethopen");
 835         if (card->state == CARD_STATE_UP)
 836                 return rc;
 837         if (card->state != CARD_STATE_SOFTSETUP)
 838                 return -ENODEV;
 839
 840         if ((card->info.type != QETH_CARD_TYPE_OSN) &&
 841              (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
 842                 QETH_CARD_TEXT(card, 4, "nomacadr");
 843                 return -EPERM;
 844         }
 845         card->data.state = CH_STATE_UP;
 846         card->state = CARD_STATE_UP;
 847         netif_start_queue(dev);
 848
 849         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
 850                 napi_enable(&card->napi);
 851                 napi_schedule(&card->napi);
 852         } else
 853                 rc = -EIO;
 854         return rc;
 855 }
 856
 857 static int qeth_l2_open(struct net_device *dev)
 858 {
 859         struct qeth_card *card = dev->ml_priv;
 860
 861         QETH_CARD_TEXT(card, 5, "qethope_");
 862         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 863                 QETH_CARD_TEXT(card, 3, "openREC");
 864                 return -ERESTARTSYS;
 865         }
 866         return __qeth_l2_open(dev);
 867 }
 868
 869 static int qeth_l2_stop(struct net_device *dev)
 870 {
 871         struct qeth_card *card = dev->ml_priv;
 872
 873         QETH_CARD_TEXT(card, 4, "qethstop");
 874         netif_tx_disable(dev);
 875         if (card->state == CARD_STATE_UP) {
 876                 card->state = CARD_STATE_SOFTSETUP;
 877                 napi_disable(&card->napi);
 878         }
 879         return 0;
 880 }
 881
 882 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
 883 {
 884         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 885
 886         qeth_l2_create_device_attributes(&gdev->dev);
 887         INIT_LIST_HEAD(&card->vid_list);
 888         INIT_LIST_HEAD(&card->mc_list);
 889         card->options.layer2 = 1;
 890         card->info.hwtrap = 0;
 891         return 0;
 892 }
 893
 894 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
 895 {
 896         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
 897
 898         qeth_l2_remove_device_attributes(&cgdev->dev);
 899         qeth_set_allowed_threads(card, 0, 1);
 900         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
 901
 902         if (cgdev->state == CCWGROUP_ONLINE)
 903                 qeth_l2_set_offline(cgdev);
 904
 905         if (card->dev) {
 906                 unregister_netdev(card->dev);
 907                 card->dev = NULL;
 908         }
 909         return;
 910 }
 911
 912 static const struct ethtool_ops qeth_l2_ethtool_ops = {
 913         .get_link = ethtool_op_get_link,
 914         .get_strings = qeth_core_get_strings,
 915         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 916         .get_sset_count = qeth_core_get_sset_count,
 917         .get_drvinfo = qeth_core_get_drvinfo,
 918         .get_settings = qeth_core_ethtool_get_settings,
 919 };
 920
 921 static const struct ethtool_ops qeth_l2_osn_ops = {
 922         .get_strings = qeth_core_get_strings,
 923         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 924         .get_sset_count = qeth_core_get_sset_count,
 925         .get_drvinfo = qeth_core_get_drvinfo,
 926 };
 927
 928 static const struct net_device_ops qeth_l2_netdev_ops = {
 929         .ndo_open               = qeth_l2_open,
 930         .ndo_stop               = qeth_l2_stop,
 931         .ndo_get_stats          = qeth_get_stats,
 932         .ndo_start_xmit         = qeth_l2_hard_start_xmit,
 933         .ndo_validate_addr      = eth_validate_addr,
 934         .ndo_set_rx_mode        = qeth_l2_set_multicast_list,
 935         .ndo_do_ioctl           = qeth_l2_do_ioctl,
 936         .ndo_set_mac_address    = qeth_l2_set_mac_address,
 937         .ndo_change_mtu         = qeth_change_mtu,
 938         .ndo_vlan_rx_add_vid    = qeth_l2_vlan_rx_add_vid,
 939         .ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
 940         .ndo_tx_timeout         = qeth_tx_timeout,
 941 };
 942
 943 static int qeth_l2_setup_netdev(struct qeth_card *card)
 944 {
 945         switch (card->info.type) {
 946         case QETH_CARD_TYPE_IQD:
 947                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
 948                                          ether_setup);
 949                 break;
 950         case QETH_CARD_TYPE_OSN:
 951                 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
 952                                          ether_setup);
 953                 card->dev->flags |= IFF_NOARP;
 954                 break;
 955         default:
 956                 card->dev = alloc_etherdev(0);
 957         }
 958
 959         if (!card->dev)
 960                 return -ENODEV;
 961
 962         card->dev->ml_priv = card;
 963         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
 964         card->dev->mtu = card->info.initial_mtu;
 965         card->dev->netdev_ops = &qeth_l2_netdev_ops;
 966         card->dev->ethtool_ops =
 967                 (card->info.type != QETH_CARD_TYPE_OSN) ?
 968                 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
 969         card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
 970         card->info.broadcast_capable = 1;
 971         qeth_l2_request_initial_mac(card);
 972         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
 973         netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
 974         return register_netdev(card->dev);
 975 }
 976
 977 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 978 {
 979         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 980         int rc = 0;
 981         enum qeth_card_states recover_flag;
 982
 983         mutex_lock(&card->discipline_mutex);
 984         mutex_lock(&card->conf_mutex);
 985         QETH_DBF_TEXT(SETUP, 2, "setonlin");
 986         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 987
 988         recover_flag = card->state;
 989         rc = qeth_core_hardsetup_card(card);
 990         if (rc) {
 991                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
 992                 rc = -ENODEV;
 993                 goto out_remove;
 994         }
 995         qeth_bridgeport_query_support(card);
 996         if (card->options.sbp.supported_funcs)
 997                 dev_info(&card->gdev->dev,
 998                 "The device represents a HiperSockets Bridge Capable Port\n");
 999         qeth_trace_features(card);
1000
1001         if (!card->dev && qeth_l2_setup_netdev(card)) {
1002                 rc = -ENODEV;
1003                 goto out_remove;
1004         }
1005
1006         if (card->info.type != QETH_CARD_TYPE_OSN)
1007                 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1008
1009         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1010                 if (card->info.hwtrap &&
1011                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1012                         card->info.hwtrap = 0;
1013         } else
1014                 card->info.hwtrap = 0;
1015
1016         qeth_l2_setup_bridgeport_attrs(card);
1017
1018         card->state = CARD_STATE_HARDSETUP;
1019         memset(&card->rx, 0, sizeof(struct qeth_rx));
1020         qeth_print_status_message(card);
1021
1022         /* softsetup */
1023         QETH_DBF_TEXT(SETUP, 2, "softsetp");
1024
1025         rc = qeth_send_startlan(card);
1026         if (rc) {
1027                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1028                 if (rc == 0xe080) {
1029                         dev_warn(&card->gdev->dev,
1030                                 "The LAN is offline\n");
1031                         card->lan_online = 0;
1032                         goto contin;
1033                 }
1034                 rc = -ENODEV;
1035                 goto out_remove;
1036         } else
1037                 card->lan_online = 1;
1038
1039 contin:
1040         if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1041             (card->info.type == QETH_CARD_TYPE_OSX)) {
1042                 /* configure isolation level */
1043                 rc = qeth_set_access_ctrl_online(card, 0);
1044                 if (rc) {
1045                         rc = -ENODEV;
1046                         goto out_remove;
1047                 }
1048         }
1049
1050         if (card->info.type != QETH_CARD_TYPE_OSN &&
1051             card->info.type != QETH_CARD_TYPE_OSM)
1052                 qeth_l2_process_vlans(card);
1053
1054         netif_tx_disable(card->dev);
1055
1056         rc = qeth_init_qdio_queues(card);
1057         if (rc) {
1058                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1059                 rc = -ENODEV;
1060                 goto out_remove;
1061         }
1062         card->state = CARD_STATE_SOFTSETUP;
1063         if (card->lan_online)
1064                 netif_carrier_on(card->dev);
1065         else
1066                 netif_carrier_off(card->dev);
1067
1068         qeth_set_allowed_threads(card, 0xffffffff, 0);
1069         if (recover_flag == CARD_STATE_RECOVER) {
1070                 if (recovery_mode &&
1071                     card->info.type != QETH_CARD_TYPE_OSN) {
1072                         __qeth_l2_open(card->dev);
1073                 } else {
1074                         rtnl_lock();
1075                         dev_open(card->dev);
1076                         rtnl_unlock();
1077                 }
1078                 /* this also sets saved unicast addresses */
1079                 qeth_l2_set_multicast_list(card->dev);
1080         }
1081         /* let user_space know that device is online */
1082         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1083         mutex_unlock(&card->conf_mutex);
1084         mutex_unlock(&card->discipline_mutex);
1085         return 0;
1086
1087 out_remove:
1088         qeth_l2_stop_card(card, 0);
1089         ccw_device_set_offline(CARD_DDEV(card));
1090         ccw_device_set_offline(CARD_WDEV(card));
1091         ccw_device_set_offline(CARD_RDEV(card));
1092         qdio_free(CARD_DDEV(card));
1093         if (recover_flag == CARD_STATE_RECOVER)
1094                 card->state = CARD_STATE_RECOVER;
1095         else
1096                 card->state = CARD_STATE_DOWN;
1097         mutex_unlock(&card->conf_mutex);
1098         mutex_unlock(&card->discipline_mutex);
1099         return rc;
1100 }
1101
1102 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1103 {
1104         return __qeth_l2_set_online(gdev, 0);
1105 }
1106
1107 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1108                                         int recovery_mode)
1109 {
1110         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1111         int rc = 0, rc2 = 0, rc3 = 0;
1112         enum qeth_card_states recover_flag;
1113
1114         mutex_lock(&card->discipline_mutex);
1115         mutex_lock(&card->conf_mutex);
1116         QETH_DBF_TEXT(SETUP, 3, "setoffl");
1117         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1118
1119         if (card->dev && netif_carrier_ok(card->dev))
1120                 netif_carrier_off(card->dev);
1121         recover_flag = card->state;
1122         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1123                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1124                 card->info.hwtrap = 1;
1125         }
1126         qeth_l2_stop_card(card, recovery_mode);
1127         rc  = ccw_device_set_offline(CARD_DDEV(card));
1128         rc2 = ccw_device_set_offline(CARD_WDEV(card));
1129         rc3 = ccw_device_set_offline(CARD_RDEV(card));
1130         if (!rc)
1131                 rc = (rc2) ? rc2 : rc3;
1132         if (rc)
1133                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1134         qdio_free(CARD_DDEV(card));
1135         if (recover_flag == CARD_STATE_UP)
1136                 card->state = CARD_STATE_RECOVER;
1137         /* let user_space know that device is offline */
1138         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1139         mutex_unlock(&card->conf_mutex);
1140         mutex_unlock(&card->discipline_mutex);
1141         return 0;
1142 }
1143
1144 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1145 {
1146         return __qeth_l2_set_offline(cgdev, 0);
1147 }
1148
1149 static int qeth_l2_recover(void *ptr)
1150 {
1151         struct qeth_card *card;
1152         int rc = 0;
1153
1154         card = (struct qeth_card *) ptr;
1155         QETH_CARD_TEXT(card, 2, "recover1");
1156         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1157                 return 0;
1158         QETH_CARD_TEXT(card, 2, "recover2");
1159         dev_warn(&card->gdev->dev,
1160                 "A recovery process has been started for the device\n");
1161         qeth_set_recovery_task(card);
1162         __qeth_l2_set_offline(card->gdev, 1);
1163         rc = __qeth_l2_set_online(card->gdev, 1);
1164         if (!rc)
1165                 dev_info(&card->gdev->dev,
1166                         "Device successfully recovered!\n");
1167         else {
1168                 qeth_close_dev(card);
1169                 dev_warn(&card->gdev->dev, "The qeth device driver "
1170                                 "failed to recover an error on the device\n");
1171         }
1172         qeth_clear_recovery_task(card);
1173         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1174         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1175         return 0;
1176 }
1177
1178 static int __init qeth_l2_init(void)
1179 {
1180         pr_info("register layer 2 discipline\n");
1181         return 0;
1182 }
1183
1184 static void __exit qeth_l2_exit(void)
1185 {
1186         pr_info("unregister layer 2 discipline\n");
1187 }
1188
1189 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1190 {
1191         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1192         qeth_set_allowed_threads(card, 0, 1);
1193         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1194                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1195         qeth_qdio_clear_card(card, 0);
1196         qeth_clear_qdio_buffers(card);
1197         qdio_free(CARD_DDEV(card));
1198 }
1199
1200 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1201 {
1202         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1203
1204         if (card->dev)
1205                 netif_device_detach(card->dev);
1206         qeth_set_allowed_threads(card, 0, 1);
1207         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1208         if (gdev->state == CCWGROUP_OFFLINE)
1209                 return 0;
1210         if (card->state == CARD_STATE_UP) {
1211                 if (card->info.hwtrap)
1212                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1213                 __qeth_l2_set_offline(card->gdev, 1);
1214         } else
1215                 __qeth_l2_set_offline(card->gdev, 0);
1216         return 0;
1217 }
1218
1219 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1220 {
1221         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1222         int rc = 0;
1223
1224         if (gdev->state == CCWGROUP_OFFLINE)
1225                 goto out;
1226
1227         if (card->state == CARD_STATE_RECOVER) {
1228                 rc = __qeth_l2_set_online(card->gdev, 1);
1229                 if (rc) {
1230                         rtnl_lock();
1231                         dev_close(card->dev);
1232                         rtnl_unlock();
1233                 }
1234         } else
1235                 rc = __qeth_l2_set_online(card->gdev, 0);
1236 out:
1237         qeth_set_allowed_threads(card, 0xffffffff, 0);
1238         if (card->dev)
1239                 netif_device_attach(card->dev);
1240         if (rc)
1241                 dev_warn(&card->gdev->dev, "The qeth device driver "
1242                         "failed to recover an error on the device\n");
1243         return rc;
1244 }
1245
1246 /* Returns zero if the command is successfully "consumed" */
1247 static int qeth_l2_control_event(struct qeth_card *card,
1248                                         struct qeth_ipa_cmd *cmd)
1249 {
1250         switch (cmd->hdr.command) {
1251         case IPA_CMD_SETBRIDGEPORT:
1252                 if (cmd->data.sbp.hdr.command_code ==
1253                                 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1254                         qeth_bridge_state_change(card, cmd);
1255                         return 0;
1256                 } else
1257                         return 1;
1258         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1259                 qeth_bridge_host_event(card, cmd);
1260                 return 0;
1261         default:
1262                 return 1;
1263         }
1264 }
1265
1266 struct qeth_discipline qeth_l2_discipline = {
1267         .start_poll = qeth_qdio_start_poll,
1268         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1269         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1270         .recover = qeth_l2_recover,
1271         .setup = qeth_l2_probe_device,
1272         .remove = qeth_l2_remove_device,
1273         .set_online = qeth_l2_set_online,
1274         .set_offline = qeth_l2_set_offline,
1275         .shutdown = qeth_l2_shutdown,
1276         .freeze = qeth_l2_pm_suspend,
1277         .thaw = qeth_l2_pm_resume,
1278         .restore = qeth_l2_pm_resume,
1279         .control_event_handler = qeth_l2_control_event,
1280 };
1281 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1282
1283 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1284                            struct qeth_cmd_buffer *iob)
1285 {
1286         unsigned long flags;
1287         int rc = 0;
1288
1289         QETH_CARD_TEXT(card, 5, "osndctrd");
1290
1291         wait_event(card->wait_q,
1292                    atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1293         qeth_prepare_control_data(card, len, iob);
1294         QETH_CARD_TEXT(card, 6, "osnoirqp");
1295         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1296         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1297                               (addr_t) iob, 0, 0);
1298         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1299         if (rc) {
1300                 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1301                            "ccw_device_start rc = %i\n", rc);
1302                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1303                 qeth_release_buffer(iob->channel, iob);
1304                 atomic_set(&card->write.irq_pending, 0);
1305                 wake_up(&card->wait_q);
1306         }
1307         return rc;
1308 }
1309
1310 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1311                         struct qeth_cmd_buffer *iob, int data_len)
1312 {
1313         u16 s1, s2;
1314
1315         QETH_CARD_TEXT(card, 4, "osndipa");
1316
1317         qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1318         s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1319         s2 = (u16)data_len;
1320         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1321         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1322         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1323         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1324         return qeth_osn_send_control_data(card, s1, iob);
1325 }
1326
1327 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1328 {
1329         struct qeth_cmd_buffer *iob;
1330         struct qeth_card *card;
1331         int rc;
1332
1333         if (!dev)
1334                 return -ENODEV;
1335         card = dev->ml_priv;
1336         if (!card)
1337                 return -ENODEV;
1338         QETH_CARD_TEXT(card, 2, "osnsdmc");
1339         if ((card->state != CARD_STATE_UP) &&
1340             (card->state != CARD_STATE_SOFTSETUP))
1341                 return -ENODEV;
1342         iob = qeth_wait_for_buffer(&card->write);
1343         memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1344         rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1345         return rc;
1346 }
1347 EXPORT_SYMBOL(qeth_osn_assist);
1348
1349 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1350                   int (*assist_cb)(struct net_device *, void *),
1351                   int (*data_cb)(struct sk_buff *))
1352 {
1353         struct qeth_card *card;
1354
1355         *dev = qeth_l2_netdev_by_devno(read_dev_no);
1356         if (*dev == NULL)
1357                 return -ENODEV;
1358         card = (*dev)->ml_priv;
1359         if (!card)
1360                 return -ENODEV;
1361         QETH_CARD_TEXT(card, 2, "osnreg");
1362         if ((assist_cb == NULL) || (data_cb == NULL))
1363                 return -EINVAL;
1364         card->osn_info.assist_cb = assist_cb;
1365         card->osn_info.data_cb = data_cb;
1366         return 0;
1367 }
1368 EXPORT_SYMBOL(qeth_osn_register);
1369
1370 void qeth_osn_deregister(struct net_device *dev)
1371 {
1372         struct qeth_card *card;
1373
1374         if (!dev)
1375                 return;
1376         card = dev->ml_priv;
1377         if (!card)
1378                 return;
1379         QETH_CARD_TEXT(card, 2, "osndereg");
1380         card->osn_info.assist_cb = NULL;
1381         card->osn_info.data_cb = NULL;
1382         return;
1383 }
1384 EXPORT_SYMBOL(qeth_osn_deregister);
1385
1386 /* SETBRIDGEPORT support, async notifications */
1387
1388 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1389
1390 /**
1391  * qeth_bridge_emit_host_event() - bridgeport address change notification
1392  * @card:  qeth_card structure pointer, for udev events.
1393  * @evtype:  "normal" register/unregister, or abort, or reset. For abort
1394  *            and reset token and addr_lnid are unused and may be NULL.
1395  * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
1396  *                        object, 0 - addition of an object.
1397  *                        0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1398  * @token: "network token" structure identifying physical address of the port.
1399  * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1400  *
1401  * This function is called when registrations and deregistrations are
1402  * reported by the hardware, and also when notifications are enabled -
1403  * for all currently registered addresses.
1404  */
1405 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1406         enum qeth_an_event_type evtype,
1407         u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1408 {
1409         char str[7][32];
1410         char *env[8];
1411         int i = 0;
1412
1413         switch (evtype) {
1414         case anev_reg_unreg:
1415                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1416                                 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1417                                 ? "deregister" : "register");
1418                 env[i] = str[i]; i++;
1419                 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1420                         snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1421                                 addr_lnid->lnid);
1422                         env[i] = str[i]; i++;
1423                 }
1424                 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1425                         snprintf(str[i], sizeof(str[i]), "MAC=%pM6",
1426                                 &addr_lnid->mac);
1427                         env[i] = str[i]; i++;
1428                 }
1429                 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1430                         token->cssid, token->ssid, token->devnum);
1431                 env[i] = str[i]; i++;
1432                 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1433                 env[i] = str[i]; i++;
1434                 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1435                                 token->chpid);
1436                 env[i] = str[i]; i++;
1437                 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1438                 env[i] = str[i]; i++;
1439                 break;
1440         case anev_abort:
1441                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1442                 env[i] = str[i]; i++;
1443                 break;
1444         case anev_reset:
1445                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1446                 env[i] = str[i]; i++;
1447                 break;
1448         }
1449         env[i] = NULL;
1450         kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1451 }
1452
1453 struct qeth_bridge_state_data {
1454         struct work_struct worker;
1455         struct qeth_card *card;
1456         struct qeth_sbp_state_change qports;
1457 };
1458
1459 static void qeth_bridge_state_change_worker(struct work_struct *work)
1460 {
1461         struct qeth_bridge_state_data *data =
1462                 container_of(work, struct qeth_bridge_state_data, worker);
1463         /* We are only interested in the first entry - local port */
1464         struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1465         char env_locrem[32];
1466         char env_role[32];
1467         char env_state[32];
1468         char *env[] = {
1469                 env_locrem,
1470                 env_role,
1471                 env_state,
1472                 NULL
1473         };
1474
1475         /* Role should not change by itself, but if it did, */
1476         /* information from the hardware is authoritative.  */
1477         mutex_lock(&data->card->conf_mutex);
1478         data->card->options.sbp.role = entry->role;
1479         mutex_unlock(&data->card->conf_mutex);
1480
1481         snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1482         snprintf(env_role, sizeof(env_role), "ROLE=%s",
1483                 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1484                 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1485                 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1486                 "<INVALID>");
1487         snprintf(env_state, sizeof(env_state), "STATE=%s",
1488                 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1489                 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1490                 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1491                 "<INVALID>");
1492         kobject_uevent_env(&data->card->gdev->dev.kobj,
1493                                 KOBJ_CHANGE, env);
1494         kfree(data);
1495 }
1496
1497 static void qeth_bridge_state_change(struct qeth_card *card,
1498                                         struct qeth_ipa_cmd *cmd)
1499 {
1500         struct qeth_sbp_state_change *qports =
1501                  &cmd->data.sbp.data.state_change;
1502         struct qeth_bridge_state_data *data;
1503         int extrasize;
1504
1505         QETH_CARD_TEXT(card, 2, "brstchng");
1506         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1507                 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1508                 return;
1509         }
1510         extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1511         data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1512                 GFP_ATOMIC);
1513         if (!data) {
1514                 QETH_CARD_TEXT(card, 2, "BPSalloc");
1515                 return;
1516         }
1517         INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1518         data->card = card;
1519         memcpy(&data->qports, qports,
1520                         sizeof(struct qeth_sbp_state_change) + extrasize);
1521         queue_work(qeth_wq, &data->worker);
1522 }
1523
1524 struct qeth_bridge_host_data {
1525         struct work_struct worker;
1526         struct qeth_card *card;
1527         struct qeth_ipacmd_addr_change hostevs;
1528 };
1529
1530 static void qeth_bridge_host_event_worker(struct work_struct *work)
1531 {
1532         struct qeth_bridge_host_data *data =
1533                 container_of(work, struct qeth_bridge_host_data, worker);
1534         int i;
1535
1536         if (data->hostevs.lost_event_mask) {
1537                 dev_info(&data->card->gdev->dev,
1538 "Address notification from the HiperSockets Bridge Port stopped %s (%s)\n",
1539                         data->card->dev->name,
1540                         (data->hostevs.lost_event_mask == 0x01)
1541                         ? "Overflow"
1542                         : (data->hostevs.lost_event_mask == 0x02)
1543                         ? "Bridge port state change"
1544                         : "Unknown reason");
1545                 mutex_lock(&data->card->conf_mutex);
1546                 data->card->options.sbp.hostnotification = 0;
1547                 mutex_unlock(&data->card->conf_mutex);
1548                 qeth_bridge_emit_host_event(data->card, anev_abort,
1549                         0, NULL, NULL);
1550         } else
1551                 for (i = 0; i < data->hostevs.num_entries; i++) {
1552                         struct qeth_ipacmd_addr_change_entry *entry =
1553                                         &data->hostevs.entry[i];
1554                         qeth_bridge_emit_host_event(data->card,
1555                                         anev_reg_unreg,
1556                                         entry->change_code,
1557                                         &entry->token, &entry->addr_lnid);
1558                 }
1559         kfree(data);
1560 }
1561
1562 static void qeth_bridge_host_event(struct qeth_card *card,
1563                                         struct qeth_ipa_cmd *cmd)
1564 {
1565         struct qeth_ipacmd_addr_change *hostevs =
1566                  &cmd->data.addrchange;
1567         struct qeth_bridge_host_data *data;
1568         int extrasize;
1569
1570         QETH_CARD_TEXT(card, 2, "brhostev");
1571         if (cmd->hdr.return_code != 0x0000) {
1572                 if (cmd->hdr.return_code == 0x0010) {
1573                         if (hostevs->lost_event_mask == 0x00)
1574                                 hostevs->lost_event_mask = 0xff;
1575                 } else {
1576                         QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1577                                 cmd->hdr.return_code);
1578                         return;
1579                 }
1580         }
1581         extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1582                                                 hostevs->num_entries;
1583         data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1584                 GFP_ATOMIC);
1585         if (!data) {
1586                 QETH_CARD_TEXT(card, 2, "BPHalloc");
1587                 return;
1588         }
1589         INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1590         data->card = card;
1591         memcpy(&data->hostevs, hostevs,
1592                         sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1593         queue_work(qeth_wq, &data->worker);
1594 }
1595
1596 /* SETBRIDGEPORT support; sending commands */
1597
1598 struct _qeth_sbp_cbctl {
1599         u16 ipa_rc;
1600         u16 cmd_rc;
1601         union {
1602                 u32 supported;
1603                 struct {
1604                         enum qeth_sbp_roles *role;
1605                         enum qeth_sbp_states *state;
1606                 } qports;
1607         } data;
1608 };
1609
1610 /**
1611  * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1612  * @card:                     qeth_card structure pointer, for debug messages.
1613  * @cbctl:                    state structure with hardware return codes.
1614  * @setcmd:                   IPA command code
1615  *
1616  * Returns negative errno-compatible error indication or 0 on success.
1617  */
1618 static int qeth_bridgeport_makerc(struct qeth_card *card,
1619         struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1620 {
1621         int rc;
1622
1623         switch (cbctl->ipa_rc) {
1624         case IPA_RC_SUCCESS:
1625                 switch (cbctl->cmd_rc) {
1626                 case 0x0000:
1627                         rc = 0;
1628                         break;
1629                 case 0x0004:
1630                         rc = -ENOSYS;
1631                         break;
1632                 case 0x000C: /* Not configured as bridge Port */
1633                         rc = -ENODEV; /* maybe not the best code here? */
1634                         dev_err(&card->gdev->dev,
1635         "The HiperSockets device is not configured as a Bridge Port\n");
1636                         break;
1637                 case 0x0014: /* Another device is Primary */
1638                         switch (setcmd) {
1639                         case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1640                                 rc = -EEXIST;
1641                                 dev_err(&card->gdev->dev,
1642         "The HiperSockets LAN already has a primary Bridge Port\n");
1643                                 break;
1644                         case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1645                                 rc = -EBUSY;
1646                                 dev_err(&card->gdev->dev,
1647         "The HiperSockets device is already a primary Bridge Port\n");
1648                                 break;
1649                         default:
1650                                 rc = -EIO;
1651                         }
1652                         break;
1653                 case 0x0018: /* This device is currently Secondary */
1654                         rc = -EBUSY;
1655                         dev_err(&card->gdev->dev,
1656         "The HiperSockets device is already a secondary Bridge Port\n");
1657                         break;
1658                 case 0x001C: /* Limit for Secondary devices reached */
1659                         rc = -EEXIST;
1660                         dev_err(&card->gdev->dev,
1661         "The HiperSockets LAN cannot have more secondary Bridge Ports\n");
1662                         break;
1663                 case 0x0024: /* This device is currently Primary */
1664                         rc = -EBUSY;
1665                         dev_err(&card->gdev->dev,
1666         "The HiperSockets device is already a primary Bridge Port\n");
1667                         break;
1668                 case 0x0020: /* Not authorized by zManager */
1669                         rc = -EACCES;
1670                         dev_err(&card->gdev->dev,
1671         "The HiperSockets device is not authorized to be a Bridge Port\n");
1672                         break;
1673                 default:
1674                         rc = -EIO;
1675                 }
1676                 break;
1677         case IPA_RC_NOTSUPP:
1678                 rc = -ENOSYS;
1679                 break;
1680         case IPA_RC_UNSUPPORTED_COMMAND:
1681                 rc = -ENOSYS;
1682                 break;
1683         default:
1684                 rc = -EIO;
1685         }
1686         if (rc) {
1687                 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1688                 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1689         }
1690         return rc;
1691 }
1692
1693 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1694         struct qeth_reply *reply, unsigned long data)
1695 {
1696         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1697         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1698         QETH_CARD_TEXT(card, 2, "brqsupcb");
1699         cbctl->ipa_rc = cmd->hdr.return_code;
1700         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1701         if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1702                 cbctl->data.supported =
1703                         cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1704         } else {
1705                 cbctl->data.supported = 0;
1706         }
1707         return 0;
1708 }
1709
1710 /**
1711  * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1712  * @card:                            qeth_card structure pointer.
1713  *
1714  * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1715  * strucutre: card->options.sbp.supported_funcs.
1716  */
1717 static void qeth_bridgeport_query_support(struct qeth_card *card)
1718 {
1719         struct qeth_cmd_buffer *iob;
1720         struct qeth_ipa_cmd *cmd;
1721         struct _qeth_sbp_cbctl cbctl;
1722
1723         QETH_CARD_TEXT(card, 2, "brqsuppo");
1724         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1725         if (!iob)
1726                 return;
1727         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1728         cmd->data.sbp.hdr.cmdlength =
1729                 sizeof(struct qeth_ipacmd_sbp_hdr) +
1730                 sizeof(struct qeth_sbp_query_cmds_supp);
1731         cmd->data.sbp.hdr.command_code =
1732                 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1733         cmd->data.sbp.hdr.used_total = 1;
1734         cmd->data.sbp.hdr.seq_no = 1;
1735         if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1736                                                         (void *)&cbctl) ||
1737             qeth_bridgeport_makerc(card, &cbctl,
1738                                         IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1739                 /* non-zero makerc signifies failure, and produce messages */
1740                 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1741                 return;
1742         }
1743         card->options.sbp.supported_funcs = cbctl.data.supported;
1744 }
1745
1746 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1747         struct qeth_reply *reply, unsigned long data)
1748 {
1749         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1750         struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1751         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1752
1753         QETH_CARD_TEXT(card, 2, "brqprtcb");
1754         cbctl->ipa_rc = cmd->hdr.return_code;
1755         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1756         if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1757                 return 0;
1758         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1759                 cbctl->cmd_rc = 0xffff;
1760                 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1761                 return 0;
1762         }
1763         /* first entry contains the state of the local port */
1764         if (qports->num_entries > 0) {
1765                 if (cbctl->data.qports.role)
1766                         *cbctl->data.qports.role = qports->entry[0].role;
1767                 if (cbctl->data.qports.state)
1768                         *cbctl->data.qports.state = qports->entry[0].state;
1769         }
1770         return 0;
1771 }
1772
1773 /**
1774  * qeth_bridgeport_query_ports() - query local bridgeport status.
1775  * @card:                          qeth_card structure pointer.
1776  * @role:   Role of the port: 0-none, 1-primary, 2-secondary.
1777  * @state:  State of the port: 0-inactive, 1-standby, 2-active.
1778  *
1779  * Returns negative errno-compatible error indication or 0 on success.
1780  *
1781  * 'role' and 'state' are not updated in case of hardware operation failure.
1782  */
1783 int qeth_bridgeport_query_ports(struct qeth_card *card,
1784         enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1785 {
1786         int rc = 0;
1787         struct qeth_cmd_buffer *iob;
1788         struct qeth_ipa_cmd *cmd;
1789         struct _qeth_sbp_cbctl cbctl = {
1790                 .data = {
1791                         .qports = {
1792                                 .role = role,
1793                                 .state = state,
1794                         },
1795                 },
1796         };
1797
1798         QETH_CARD_TEXT(card, 2, "brqports");
1799         if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1800                 return -EOPNOTSUPP;
1801         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1802         if (!iob)
1803                 return -ENOMEM;
1804         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1805         cmd->data.sbp.hdr.cmdlength =
1806                 sizeof(struct qeth_ipacmd_sbp_hdr);
1807         cmd->data.sbp.hdr.command_code =
1808                 IPA_SBP_QUERY_BRIDGE_PORTS;
1809         cmd->data.sbp.hdr.used_total = 1;
1810         cmd->data.sbp.hdr.seq_no = 1;
1811         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1812                                 (void *)&cbctl);
1813         if (rc)
1814                 return rc;
1815         rc = qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1816         return rc;
1817 }
1818 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1819
1820 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1821         struct qeth_reply *reply, unsigned long data)
1822 {
1823         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1824         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1825         QETH_CARD_TEXT(card, 2, "brsetrcb");
1826         cbctl->ipa_rc = cmd->hdr.return_code;
1827         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1828         return 0;
1829 }
1830
1831 /**
1832  * qeth_bridgeport_setrole() - Assign primary role to the port.
1833  * @card:                      qeth_card structure pointer.
1834  * @role:                      Role to assign.
1835  *
1836  * Returns negative errno-compatible error indication or 0 on success.
1837  */
1838 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1839 {
1840         int rc = 0;
1841         int cmdlength;
1842         struct qeth_cmd_buffer *iob;
1843         struct qeth_ipa_cmd *cmd;
1844         struct _qeth_sbp_cbctl cbctl;
1845         enum qeth_ipa_sbp_cmd setcmd;
1846
1847         QETH_CARD_TEXT(card, 2, "brsetrol");
1848         switch (role) {
1849         case QETH_SBP_ROLE_NONE:
1850                 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1851                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1852                         sizeof(struct qeth_sbp_reset_role);
1853                 break;
1854         case QETH_SBP_ROLE_PRIMARY:
1855                 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1856                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1857                         sizeof(struct qeth_sbp_set_primary);
1858                 break;
1859         case QETH_SBP_ROLE_SECONDARY:
1860                 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1861                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1862                         sizeof(struct qeth_sbp_set_secondary);
1863                 break;
1864         default:
1865                 return -EINVAL;
1866         }
1867         if (!(card->options.sbp.supported_funcs & setcmd))
1868                 return -EOPNOTSUPP;
1869         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1870         if (!iob)
1871                 return -ENOMEM;
1872         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1873         cmd->data.sbp.hdr.cmdlength = cmdlength;
1874         cmd->data.sbp.hdr.command_code = setcmd;
1875         cmd->data.sbp.hdr.used_total = 1;
1876         cmd->data.sbp.hdr.seq_no = 1;
1877         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1878                                 (void *)&cbctl);
1879         if (rc)
1880                 return rc;
1881         rc = qeth_bridgeport_makerc(card, &cbctl, setcmd);
1882         return rc;
1883 }
1884
1885 /**
1886  * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1887  * @card:                     qeth_card structure pointer, for debug messages.
1888  *
1889  * Returns negative errno-compatible error indication or 0 on success.
1890  */
1891 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1892 {
1893         int rc;
1894
1895         if (pnso_rc == 0)
1896                 switch (response) {
1897                 case 0x0001:
1898                         rc = 0;
1899                         break;
1900                 case 0x0004:
1901                 case 0x0100:
1902                 case 0x0106:
1903                         rc = -ENOSYS;
1904                         dev_err(&card->gdev->dev,
1905                                 "Setting address notification failed\n");
1906                         break;
1907                 case 0x0107:
1908                         rc = -EAGAIN;
1909                         break;
1910                 default:
1911                         rc = -EIO;
1912                 }
1913         else
1914                 rc = -EIO;
1915
1916         if (rc) {
1917                 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1918                 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1919         }
1920         return rc;
1921 }
1922
1923 static void qeth_bridgeport_an_set_cb(void *priv,
1924                 enum qdio_brinfo_entry_type type, void *entry)
1925 {
1926         struct qeth_card *card = (struct qeth_card *)priv;
1927         struct qdio_brinfo_entry_l2 *l2entry;
1928         u8 code;
1929
1930         if (type != l2_addr_lnid) {
1931                 WARN_ON_ONCE(1);
1932                 return;
1933         }
1934
1935         l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1936         code = IPA_ADDR_CHANGE_CODE_MACADDR;
1937         if (l2entry->addr_lnid.lnid)
1938                 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1939         qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1940                 (struct net_if_token *)&l2entry->nit,
1941                 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1942 }
1943
1944 /**
1945  * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1946  * @card:                     qeth_card structure pointer.
1947  * @enable:                   0 - disable, non-zero - enable notifications
1948  *
1949  * Returns negative errno-compatible error indication or 0 on success.
1950  *
1951  * On enable, emits a series of address notifications udev events for all
1952  * currently registered hosts.
1953  */
1954 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1955 {
1956         int rc;
1957         u16 response;
1958         struct ccw_device *ddev;
1959         struct subchannel_id schid;
1960
1961         if (!card)
1962                 return -EINVAL;
1963         if (!card->options.sbp.supported_funcs)
1964                 return -EOPNOTSUPP;
1965         ddev = CARD_DDEV(card);
1966         ccw_device_get_schid(ddev, &schid);
1967
1968         if (enable) {
1969                 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1970                 rc = qdio_pnso_brinfo(schid, 1, &response,
1971                         qeth_bridgeport_an_set_cb, card);
1972         } else
1973                 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
1974         return qeth_anset_makerc(card, rc, response);
1975 }
1976 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
1977
1978 module_init(qeth_l2_init);
1979 module_exit(qeth_l2_exit);
1980 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1981 MODULE_DESCRIPTION("qeth layer 2 discipline");
1982 MODULE_LICENSE("GPL");