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 int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
 394 {
 395         int rc = 0;
 396
 397         QETH_DBF_TEXT(SETUP , 2, "stopcard");
 398         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 399
 400         qeth_set_allowed_threads(card, 0, 1);
 401         if (card->read.state == CH_STATE_UP &&
 402             card->write.state == CH_STATE_UP &&
 403             (card->state == CARD_STATE_UP)) {
 404                 if (recovery_mode &&
 405                     card->info.type != QETH_CARD_TYPE_OSN) {
 406                         qeth_l2_stop(card->dev);
 407                 } else {
 408                         rtnl_lock();
 409                         dev_close(card->dev);
 410                         rtnl_unlock();
 411                 }
 412                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 413                 card->state = CARD_STATE_SOFTSETUP;
 414         }
 415         if (card->state == CARD_STATE_SOFTSETUP) {
 416                 qeth_l2_del_all_mc(card, 0);
 417                 qeth_clear_ipacmd_list(card);
 418                 card->state = CARD_STATE_HARDSETUP;
 419         }
 420         if (card->state == CARD_STATE_HARDSETUP) {
 421                 qeth_qdio_clear_card(card, 0);
 422                 qeth_clear_qdio_buffers(card);
 423                 qeth_clear_working_pool_list(card);
 424                 card->state = CARD_STATE_DOWN;
 425         }
 426         if (card->state == CARD_STATE_DOWN) {
 427                 qeth_clear_cmd_buffers(&card->read);
 428                 qeth_clear_cmd_buffers(&card->write);
 429         }
 430         return rc;
 431 }
 432
 433 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
 434                                 int budget, int *done)
 435 {
 436         int work_done = 0;
 437         struct sk_buff *skb;
 438         struct qeth_hdr *hdr;
 439         unsigned int len;
 440
 441         *done = 0;
 442         WARN_ON_ONCE(!budget);
 443         while (budget) {
 444                 skb = qeth_core_get_next_skb(card,
 445                         &card->qdio.in_q->bufs[card->rx.b_index],
 446                         &card->rx.b_element, &card->rx.e_offset, &hdr);
 447                 if (!skb) {
 448                         *done = 1;
 449                         break;
 450                 }
 451                 skb->dev = card->dev;
 452                 switch (hdr->hdr.l2.id) {
 453                 case QETH_HEADER_TYPE_LAYER2:
 454                         skb->pkt_type = PACKET_HOST;
 455                         skb->protocol = eth_type_trans(skb, skb->dev);
 456                         skb->ip_summed = CHECKSUM_NONE;
 457                         if (skb->protocol == htons(ETH_P_802_2))
 458                                 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
 459                         len = skb->len;
 460                         netif_receive_skb(skb);
 461                         break;
 462                 case QETH_HEADER_TYPE_OSN:
 463                         if (card->info.type == QETH_CARD_TYPE_OSN) {
 464                                 skb_push(skb, sizeof(struct qeth_hdr));
 465                                 skb_copy_to_linear_data(skb, hdr,
 466                                                 sizeof(struct qeth_hdr));
 467                                 len = skb->len;
 468                                 card->osn_info.data_cb(skb);
 469                                 break;
 470                         }
 471                         /* else unknown */
 472                 default:
 473                         dev_kfree_skb_any(skb);
 474                         QETH_CARD_TEXT(card, 3, "inbunkno");
 475                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
 476                         continue;
 477                 }
 478                 work_done++;
 479                 budget--;
 480                 card->stats.rx_packets++;
 481                 card->stats.rx_bytes += len;
 482         }
 483         return work_done;
 484 }
 485
 486 static int qeth_l2_poll(struct napi_struct *napi, int budget)
 487 {
 488         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
 489         int work_done = 0;
 490         struct qeth_qdio_buffer *buffer;
 491         int done;
 492         int new_budget = budget;
 493
 494         if (card->options.performance_stats) {
 495                 card->perf_stats.inbound_cnt++;
 496                 card->perf_stats.inbound_start_time = qeth_get_micros();
 497         }
 498
 499         while (1) {
 500                 if (!card->rx.b_count) {
 501                         card->rx.qdio_err = 0;
 502                         card->rx.b_count = qdio_get_next_buffers(
 503                                 card->data.ccwdev, 0, &card->rx.b_index,
 504                                 &card->rx.qdio_err);
 505                         if (card->rx.b_count <= 0) {
 506                                 card->rx.b_count = 0;
 507                                 break;
 508                         }
 509                         card->rx.b_element =
 510                                 &card->qdio.in_q->bufs[card->rx.b_index]
 511                                 .buffer->element[0];
 512                         card->rx.e_offset = 0;
 513                 }
 514
 515                 while (card->rx.b_count) {
 516                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
 517                         if (!(card->rx.qdio_err &&
 518                             qeth_check_qdio_errors(card, buffer->buffer,
 519                             card->rx.qdio_err, "qinerr")))
 520                                 work_done += qeth_l2_process_inbound_buffer(
 521                                         card, new_budget, &done);
 522                         else
 523                                 done = 1;
 524
 525                         if (done) {
 526                                 if (card->options.performance_stats)
 527                                         card->perf_stats.bufs_rec++;
 528                                 qeth_put_buffer_pool_entry(card,
 529                                         buffer->pool_entry);
 530                                 qeth_queue_input_buffer(card, card->rx.b_index);
 531                                 card->rx.b_count--;
 532                                 if (card->rx.b_count) {
 533                                         card->rx.b_index =
 534                                                 (card->rx.b_index + 1) %
 535                                                 QDIO_MAX_BUFFERS_PER_Q;
 536                                         card->rx.b_element =
 537                                                 &card->qdio.in_q
 538                                                 ->bufs[card->rx.b_index]
 539                                                 .buffer->element[0];
 540                                         card->rx.e_offset = 0;
 541                                 }
 542                         }
 543
 544                         if (work_done >= budget)
 545                                 goto out;
 546                         else
 547                                 new_budget = budget - work_done;
 548                 }
 549         }
 550
 551         napi_complete(napi);
 552         if (qdio_start_irq(card->data.ccwdev, 0))
 553                 napi_schedule(&card->napi);
 554 out:
 555         if (card->options.performance_stats)
 556                 card->perf_stats.inbound_time += qeth_get_micros() -
 557                         card->perf_stats.inbound_start_time;
 558         return work_done;
 559 }
 560
 561 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
 562                            enum qeth_ipa_cmds ipacmd)
 563 {
 564         struct qeth_ipa_cmd *cmd;
 565         struct qeth_cmd_buffer *iob;
 566
 567         QETH_CARD_TEXT(card, 2, "L2sdmac");
 568         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 569         if (!iob)
 570                 return -ENOMEM;
 571         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 572         cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
 573         memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
 574         return qeth_send_ipa_cmd(card, iob, NULL, NULL);
 575 }
 576
 577 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
 578 {
 579         int rc;
 580
 581         QETH_CARD_TEXT(card, 2, "L2Setmac");
 582         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 583                                         IPA_CMD_SETVMAC));
 584         if (rc == 0) {
 585                 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 586                 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
 587                 dev_info(&card->gdev->dev,
 588                         "MAC address %pM successfully registered on device %s\n",
 589                         card->dev->dev_addr, card->dev->name);
 590         } else {
 591                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 592                 switch (rc) {
 593                 case -EEXIST:
 594                         dev_warn(&card->gdev->dev,
 595                                 "MAC address %pM already exists\n", mac);
 596                         break;
 597                 case -EPERM:
 598                         dev_warn(&card->gdev->dev,
 599                                 "MAC address %pM is not authorized\n", mac);
 600                         break;
 601                 }
 602         }
 603         return rc;
 604 }
 605
 606 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
 607 {
 608         int rc;
 609
 610         QETH_CARD_TEXT(card, 2, "L2Delmac");
 611         if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
 612                 return 0;
 613         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 614                                         IPA_CMD_DELVMAC));
 615         if (rc == 0)
 616                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 617         return rc;
 618 }
 619
 620 static int qeth_l2_request_initial_mac(struct qeth_card *card)
 621 {
 622         int rc = 0;
 623         char vendor_pre[] = {0x02, 0x00, 0x00};
 624
 625         QETH_DBF_TEXT(SETUP, 2, "doL2init");
 626         QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
 627
 628         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 629                 rc = qeth_query_setadapterparms(card);
 630                 if (rc) {
 631                         QETH_DBF_MESSAGE(2, "could not query adapter "
 632                                 "parameters on device %s: x%x\n",
 633                                 CARD_BUS_ID(card), rc);
 634                 }
 635         }
 636
 637         if (card->info.type == QETH_CARD_TYPE_IQD ||
 638             card->info.type == QETH_CARD_TYPE_OSM ||
 639             card->info.type == QETH_CARD_TYPE_OSX ||
 640             card->info.guestlan) {
 641                 rc = qeth_setadpparms_change_macaddr(card);
 642                 if (rc) {
 643                         QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
 644                                 "device %s: x%x\n", CARD_BUS_ID(card), rc);
 645                         QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
 646                         return rc;
 647                 }
 648                 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
 649         } else {
 650                 eth_random_addr(card->dev->dev_addr);
 651                 memcpy(card->dev->dev_addr, vendor_pre, 3);
 652         }
 653         return 0;
 654 }
 655
 656 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
 657 {
 658         struct sockaddr *addr = p;
 659         struct qeth_card *card = dev->ml_priv;
 660         int rc = 0;
 661
 662         QETH_CARD_TEXT(card, 3, "setmac");
 663
 664         if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
 665                 QETH_CARD_TEXT(card, 3, "setmcINV");
 666                 return -EOPNOTSUPP;
 667         }
 668
 669         if (card->info.type == QETH_CARD_TYPE_OSN ||
 670             card->info.type == QETH_CARD_TYPE_OSM ||
 671             card->info.type == QETH_CARD_TYPE_OSX) {
 672                 QETH_CARD_TEXT(card, 3, "setmcTYP");
 673                 return -EOPNOTSUPP;
 674         }
 675         QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
 676         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 677                 QETH_CARD_TEXT(card, 3, "setmcREC");
 678                 return -ERESTARTSYS;
 679         }
 680         rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
 681         if (!rc || (rc == -ENOENT))
 682                 rc = qeth_l2_send_setmac(card, addr->sa_data);
 683         return rc ? -EINVAL : 0;
 684 }
 685
 686 static void qeth_promisc_to_bridge(struct qeth_card *card)
 687 {
 688         struct net_device *dev = card->dev;
 689         enum qeth_ipa_promisc_modes promisc_mode;
 690         int role;
 691         int rc;
 692
 693         QETH_CARD_TEXT(card, 3, "pmisc2br");
 694
 695         if (!card->options.sbp.reflect_promisc)
 696                 return;
 697         promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
 698                                                 : SET_PROMISC_MODE_OFF;
 699         if (promisc_mode == card->info.promisc_mode)
 700                 return;
 701
 702         if (promisc_mode == SET_PROMISC_MODE_ON) {
 703                 if (card->options.sbp.reflect_promisc_primary)
 704                         role = QETH_SBP_ROLE_PRIMARY;
 705                 else
 706                         role = QETH_SBP_ROLE_SECONDARY;
 707         } else
 708                 role = QETH_SBP_ROLE_NONE;
 709
 710         rc = qeth_bridgeport_setrole(card, role);
 711         QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
 712                         (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
 713         if (!rc) {
 714                 card->options.sbp.role = role;
 715                 card->info.promisc_mode = promisc_mode;
 716         }
 717 }
 718
 719 static void qeth_l2_set_multicast_list(struct net_device *dev)
 720 {
 721         struct qeth_card *card = dev->ml_priv;
 722         struct netdev_hw_addr *ha;
 723
 724         if (card->info.type == QETH_CARD_TYPE_OSN)
 725                 return ;
 726
 727         QETH_CARD_TEXT(card, 3, "setmulti");
 728         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
 729             (card->state != CARD_STATE_UP))
 730                 return;
 731         qeth_l2_del_all_mc(card, 1);
 732         spin_lock_bh(&card->mclock);
 733         netdev_for_each_mc_addr(ha, dev)
 734                 qeth_l2_add_mc(card, ha->addr, 0);
 735
 736         netdev_for_each_uc_addr(ha, dev)
 737                 qeth_l2_add_mc(card, ha->addr, 1);
 738
 739         spin_unlock_bh(&card->mclock);
 740         if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 741                 qeth_setadp_promisc_mode(card);
 742         else
 743                 qeth_promisc_to_bridge(card);
 744 }
 745
 746 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 747 {
 748         int rc;
 749         struct qeth_hdr *hdr = NULL;
 750         int elements = 0;
 751         struct qeth_card *card = dev->ml_priv;
 752         struct sk_buff *new_skb = skb;
 753         int cast_type = qeth_l2_get_cast_type(card, skb);
 754         struct qeth_qdio_out_q *queue;
 755         int tx_bytes = skb->len;
 756         int data_offset = -1;
 757         int elements_needed = 0;
 758         int hd_len = 0;
 759
 760         if (card->qdio.do_prio_queueing || (cast_type &&
 761                                         card->info.is_multicast_different))
 762                 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
 763                                         qeth_get_ip_version(skb), cast_type)];
 764         else
 765                 queue = card->qdio.out_qs[card->qdio.default_out_queue];
 766
 767         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
 768                 card->stats.tx_carrier_errors++;
 769                 goto tx_drop;
 770         }
 771
 772         if ((card->info.type == QETH_CARD_TYPE_OSN) &&
 773             (skb->protocol == htons(ETH_P_IPV6)))
 774                 goto tx_drop;
 775
 776         if (card->options.performance_stats) {
 777                 card->perf_stats.outbound_cnt++;
 778                 card->perf_stats.outbound_start_time = qeth_get_micros();
 779         }
 780         netif_stop_queue(dev);
 781
 782         if (card->info.type == QETH_CARD_TYPE_OSN)
 783                 hdr = (struct qeth_hdr *)skb->data;
 784         else {
 785                 if (card->info.type == QETH_CARD_TYPE_IQD) {
 786                         new_skb = skb;
 787                         data_offset = ETH_HLEN;
 788                         hd_len = ETH_HLEN;
 789                         hdr = kmem_cache_alloc(qeth_core_header_cache,
 790                                                 GFP_ATOMIC);
 791                         if (!hdr)
 792                                 goto tx_drop;
 793                         elements_needed++;
 794                         skb_reset_mac_header(new_skb);
 795                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 796                         hdr->hdr.l2.pkt_length = new_skb->len;
 797                         memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
 798                                 skb_mac_header(new_skb), ETH_HLEN);
 799                 } else {
 800                         /* create a clone with writeable headroom */
 801                         new_skb = skb_realloc_headroom(skb,
 802                                                 sizeof(struct qeth_hdr));
 803                         if (!new_skb)
 804                                 goto tx_drop;
 805                         hdr = (struct qeth_hdr *)skb_push(new_skb,
 806                                                 sizeof(struct qeth_hdr));
 807                         skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
 808                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 809                 }
 810         }
 811
 812         elements = qeth_get_elements_no(card, new_skb, elements_needed);
 813         if (!elements) {
 814                 if (data_offset >= 0)
 815                         kmem_cache_free(qeth_core_header_cache, hdr);
 816                 goto tx_drop;
 817         }
 818
 819         if (card->info.type != QETH_CARD_TYPE_IQD) {
 820                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
 821                     sizeof(struct qeth_hdr_layer2)))
 822                         goto tx_drop;
 823                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
 824                                          elements);
 825         } else
 826                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
 827                                         elements, data_offset, hd_len);
 828         if (!rc) {
 829                 card->stats.tx_packets++;
 830                 card->stats.tx_bytes += tx_bytes;
 831                 if (new_skb != skb)
 832                         dev_kfree_skb_any(skb);
 833                 rc = NETDEV_TX_OK;
 834         } else {
 835                 if (data_offset >= 0)
 836                         kmem_cache_free(qeth_core_header_cache, hdr);
 837
 838                 if (rc == -EBUSY) {
 839                         if (new_skb != skb)
 840                                 dev_kfree_skb_any(new_skb);
 841                         return NETDEV_TX_BUSY;
 842                 } else
 843                         goto tx_drop;
 844         }
 845
 846         netif_wake_queue(dev);
 847         if (card->options.performance_stats)
 848                 card->perf_stats.outbound_time += qeth_get_micros() -
 849                         card->perf_stats.outbound_start_time;
 850         return rc;
 851
 852 tx_drop:
 853         card->stats.tx_dropped++;
 854         card->stats.tx_errors++;
 855         if ((new_skb != skb) && new_skb)
 856                 dev_kfree_skb_any(new_skb);
 857         dev_kfree_skb_any(skb);
 858         netif_wake_queue(dev);
 859         return NETDEV_TX_OK;
 860 }
 861
 862 static int __qeth_l2_open(struct net_device *dev)
 863 {
 864         struct qeth_card *card = dev->ml_priv;
 865         int rc = 0;
 866
 867         QETH_CARD_TEXT(card, 4, "qethopen");
 868         if (card->state == CARD_STATE_UP)
 869                 return rc;
 870         if (card->state != CARD_STATE_SOFTSETUP)
 871                 return -ENODEV;
 872
 873         if ((card->info.type != QETH_CARD_TYPE_OSN) &&
 874              (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
 875                 QETH_CARD_TEXT(card, 4, "nomacadr");
 876                 return -EPERM;
 877         }
 878         card->data.state = CH_STATE_UP;
 879         card->state = CARD_STATE_UP;
 880         netif_start_queue(dev);
 881
 882         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
 883                 napi_enable(&card->napi);
 884                 napi_schedule(&card->napi);
 885         } else
 886                 rc = -EIO;
 887         return rc;
 888 }
 889
 890 static int qeth_l2_open(struct net_device *dev)
 891 {
 892         struct qeth_card *card = dev->ml_priv;
 893
 894         QETH_CARD_TEXT(card, 5, "qethope_");
 895         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 896                 QETH_CARD_TEXT(card, 3, "openREC");
 897                 return -ERESTARTSYS;
 898         }
 899         return __qeth_l2_open(dev);
 900 }
 901
 902 static int qeth_l2_stop(struct net_device *dev)
 903 {
 904         struct qeth_card *card = dev->ml_priv;
 905
 906         QETH_CARD_TEXT(card, 4, "qethstop");
 907         netif_tx_disable(dev);
 908         if (card->state == CARD_STATE_UP) {
 909                 card->state = CARD_STATE_SOFTSETUP;
 910                 napi_disable(&card->napi);
 911         }
 912         return 0;
 913 }
 914
 915 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
 916 {
 917         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 918
 919         qeth_l2_create_device_attributes(&gdev->dev);
 920         INIT_LIST_HEAD(&card->vid_list);
 921         INIT_LIST_HEAD(&card->mc_list);
 922         card->options.layer2 = 1;
 923         card->info.hwtrap = 0;
 924         return 0;
 925 }
 926
 927 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
 928 {
 929         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
 930
 931         qeth_l2_remove_device_attributes(&cgdev->dev);
 932         qeth_set_allowed_threads(card, 0, 1);
 933         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
 934
 935         if (cgdev->state == CCWGROUP_ONLINE)
 936                 qeth_l2_set_offline(cgdev);
 937
 938         if (card->dev) {
 939                 unregister_netdev(card->dev);
 940                 card->dev = NULL;
 941         }
 942         return;
 943 }
 944
 945 static const struct ethtool_ops qeth_l2_ethtool_ops = {
 946         .get_link = ethtool_op_get_link,
 947         .get_strings = qeth_core_get_strings,
 948         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 949         .get_sset_count = qeth_core_get_sset_count,
 950         .get_drvinfo = qeth_core_get_drvinfo,
 951         .get_settings = qeth_core_ethtool_get_settings,
 952 };
 953
 954 static const struct ethtool_ops qeth_l2_osn_ops = {
 955         .get_strings = qeth_core_get_strings,
 956         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 957         .get_sset_count = qeth_core_get_sset_count,
 958         .get_drvinfo = qeth_core_get_drvinfo,
 959 };
 960
 961 static const struct net_device_ops qeth_l2_netdev_ops = {
 962         .ndo_open               = qeth_l2_open,
 963         .ndo_stop               = qeth_l2_stop,
 964         .ndo_get_stats          = qeth_get_stats,
 965         .ndo_start_xmit         = qeth_l2_hard_start_xmit,
 966         .ndo_validate_addr      = eth_validate_addr,
 967         .ndo_set_rx_mode        = qeth_l2_set_multicast_list,
 968         .ndo_do_ioctl           = qeth_l2_do_ioctl,
 969         .ndo_set_mac_address    = qeth_l2_set_mac_address,
 970         .ndo_change_mtu         = qeth_change_mtu,
 971         .ndo_vlan_rx_add_vid    = qeth_l2_vlan_rx_add_vid,
 972         .ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
 973         .ndo_tx_timeout         = qeth_tx_timeout,
 974 };
 975
 976 static int qeth_l2_setup_netdev(struct qeth_card *card)
 977 {
 978         switch (card->info.type) {
 979         case QETH_CARD_TYPE_IQD:
 980                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
 981                                          ether_setup);
 982                 break;
 983         case QETH_CARD_TYPE_OSN:
 984                 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
 985                                          ether_setup);
 986                 card->dev->flags |= IFF_NOARP;
 987                 break;
 988         default:
 989                 card->dev = alloc_etherdev(0);
 990         }
 991
 992         if (!card->dev)
 993                 return -ENODEV;
 994
 995         card->dev->ml_priv = card;
 996         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
 997         card->dev->mtu = card->info.initial_mtu;
 998         card->dev->netdev_ops = &qeth_l2_netdev_ops;
 999         card->dev->ethtool_ops =
1000                 (card->info.type != QETH_CARD_TYPE_OSN) ?
1001                 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
1002         card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1003         card->info.broadcast_capable = 1;
1004         qeth_l2_request_initial_mac(card);
1005         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1006         netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1007         return register_netdev(card->dev);
1008 }
1009
1010 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1011 {
1012         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1013         int rc = 0;
1014         enum qeth_card_states recover_flag;
1015
1016         mutex_lock(&card->discipline_mutex);
1017         mutex_lock(&card->conf_mutex);
1018         QETH_DBF_TEXT(SETUP, 2, "setonlin");
1019         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1020
1021         recover_flag = card->state;
1022         rc = qeth_core_hardsetup_card(card);
1023         if (rc) {
1024                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1025                 rc = -ENODEV;
1026                 goto out_remove;
1027         }
1028         qeth_bridgeport_query_support(card);
1029         if (card->options.sbp.supported_funcs)
1030                 dev_info(&card->gdev->dev,
1031                 "The device represents a Bridge Capable Port\n");
1032         qeth_trace_features(card);
1033
1034         if (!card->dev && qeth_l2_setup_netdev(card)) {
1035                 rc = -ENODEV;
1036                 goto out_remove;
1037         }
1038
1039         if (card->info.type != QETH_CARD_TYPE_OSN)
1040                 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1041
1042         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1043                 if (card->info.hwtrap &&
1044                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1045                         card->info.hwtrap = 0;
1046         } else
1047                 card->info.hwtrap = 0;
1048
1049         qeth_l2_setup_bridgeport_attrs(card);
1050
1051         card->state = CARD_STATE_HARDSETUP;
1052         memset(&card->rx, 0, sizeof(struct qeth_rx));
1053         qeth_print_status_message(card);
1054
1055         /* softsetup */
1056         QETH_DBF_TEXT(SETUP, 2, "softsetp");
1057
1058         rc = qeth_send_startlan(card);
1059         if (rc) {
1060                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1061                 if (rc == 0xe080) {
1062                         dev_warn(&card->gdev->dev,
1063                                 "The LAN is offline\n");
1064                         card->lan_online = 0;
1065                         goto contin;
1066                 }
1067                 rc = -ENODEV;
1068                 goto out_remove;
1069         } else
1070                 card->lan_online = 1;
1071
1072 contin:
1073         if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1074             (card->info.type == QETH_CARD_TYPE_OSX)) {
1075                 /* configure isolation level */
1076                 rc = qeth_set_access_ctrl_online(card, 0);
1077                 if (rc) {
1078                         rc = -ENODEV;
1079                         goto out_remove;
1080                 }
1081         }
1082
1083         if (card->info.type != QETH_CARD_TYPE_OSN &&
1084             card->info.type != QETH_CARD_TYPE_OSM)
1085                 qeth_l2_process_vlans(card);
1086
1087         netif_tx_disable(card->dev);
1088
1089         rc = qeth_init_qdio_queues(card);
1090         if (rc) {
1091                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1092                 rc = -ENODEV;
1093                 goto out_remove;
1094         }
1095         card->state = CARD_STATE_SOFTSETUP;
1096         if (card->lan_online)
1097                 netif_carrier_on(card->dev);
1098         else
1099                 netif_carrier_off(card->dev);
1100
1101         qeth_set_allowed_threads(card, 0xffffffff, 0);
1102         if (recover_flag == CARD_STATE_RECOVER) {
1103                 if (recovery_mode &&
1104                     card->info.type != QETH_CARD_TYPE_OSN) {
1105                         __qeth_l2_open(card->dev);
1106                 } else {
1107                         rtnl_lock();
1108                         dev_open(card->dev);
1109                         rtnl_unlock();
1110                 }
1111                 /* this also sets saved unicast addresses */
1112                 qeth_l2_set_multicast_list(card->dev);
1113         }
1114         /* let user_space know that device is online */
1115         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1116         mutex_unlock(&card->conf_mutex);
1117         mutex_unlock(&card->discipline_mutex);
1118         return 0;
1119
1120 out_remove:
1121         qeth_l2_stop_card(card, 0);
1122         ccw_device_set_offline(CARD_DDEV(card));
1123         ccw_device_set_offline(CARD_WDEV(card));
1124         ccw_device_set_offline(CARD_RDEV(card));
1125         qdio_free(CARD_DDEV(card));
1126         if (recover_flag == CARD_STATE_RECOVER)
1127                 card->state = CARD_STATE_RECOVER;
1128         else
1129                 card->state = CARD_STATE_DOWN;
1130         mutex_unlock(&card->conf_mutex);
1131         mutex_unlock(&card->discipline_mutex);
1132         return rc;
1133 }
1134
1135 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1136 {
1137         return __qeth_l2_set_online(gdev, 0);
1138 }
1139
1140 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1141                                         int recovery_mode)
1142 {
1143         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1144         int rc = 0, rc2 = 0, rc3 = 0;
1145         enum qeth_card_states recover_flag;
1146
1147         mutex_lock(&card->discipline_mutex);
1148         mutex_lock(&card->conf_mutex);
1149         QETH_DBF_TEXT(SETUP, 3, "setoffl");
1150         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1151
1152         if (card->dev && netif_carrier_ok(card->dev))
1153                 netif_carrier_off(card->dev);
1154         recover_flag = card->state;
1155         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1156                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1157                 card->info.hwtrap = 1;
1158         }
1159         qeth_l2_stop_card(card, recovery_mode);
1160         rc  = ccw_device_set_offline(CARD_DDEV(card));
1161         rc2 = ccw_device_set_offline(CARD_WDEV(card));
1162         rc3 = ccw_device_set_offline(CARD_RDEV(card));
1163         if (!rc)
1164                 rc = (rc2) ? rc2 : rc3;
1165         if (rc)
1166                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1167         qdio_free(CARD_DDEV(card));
1168         if (recover_flag == CARD_STATE_UP)
1169                 card->state = CARD_STATE_RECOVER;
1170         /* let user_space know that device is offline */
1171         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1172         mutex_unlock(&card->conf_mutex);
1173         mutex_unlock(&card->discipline_mutex);
1174         return 0;
1175 }
1176
1177 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1178 {
1179         return __qeth_l2_set_offline(cgdev, 0);
1180 }
1181
1182 static int qeth_l2_recover(void *ptr)
1183 {
1184         struct qeth_card *card;
1185         int rc = 0;
1186
1187         card = (struct qeth_card *) ptr;
1188         QETH_CARD_TEXT(card, 2, "recover1");
1189         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1190                 return 0;
1191         QETH_CARD_TEXT(card, 2, "recover2");
1192         dev_warn(&card->gdev->dev,
1193                 "A recovery process has been started for the device\n");
1194         qeth_set_recovery_task(card);
1195         __qeth_l2_set_offline(card->gdev, 1);
1196         rc = __qeth_l2_set_online(card->gdev, 1);
1197         if (!rc)
1198                 dev_info(&card->gdev->dev,
1199                         "Device successfully recovered!\n");
1200         else {
1201                 qeth_close_dev(card);
1202                 dev_warn(&card->gdev->dev, "The qeth device driver "
1203                                 "failed to recover an error on the device\n");
1204         }
1205         qeth_clear_recovery_task(card);
1206         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1207         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1208         return 0;
1209 }
1210
1211 static int __init qeth_l2_init(void)
1212 {
1213         pr_info("register layer 2 discipline\n");
1214         return 0;
1215 }
1216
1217 static void __exit qeth_l2_exit(void)
1218 {
1219         pr_info("unregister layer 2 discipline\n");
1220 }
1221
1222 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1223 {
1224         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1225         qeth_set_allowed_threads(card, 0, 1);
1226         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1227                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1228         qeth_qdio_clear_card(card, 0);
1229         qeth_clear_qdio_buffers(card);
1230         qdio_free(CARD_DDEV(card));
1231 }
1232
1233 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1234 {
1235         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1236
1237         if (card->dev)
1238                 netif_device_detach(card->dev);
1239         qeth_set_allowed_threads(card, 0, 1);
1240         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1241         if (gdev->state == CCWGROUP_OFFLINE)
1242                 return 0;
1243         if (card->state == CARD_STATE_UP) {
1244                 if (card->info.hwtrap)
1245                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1246                 __qeth_l2_set_offline(card->gdev, 1);
1247         } else
1248                 __qeth_l2_set_offline(card->gdev, 0);
1249         return 0;
1250 }
1251
1252 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1253 {
1254         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1255         int rc = 0;
1256
1257         if (gdev->state == CCWGROUP_OFFLINE)
1258                 goto out;
1259
1260         if (card->state == CARD_STATE_RECOVER) {
1261                 rc = __qeth_l2_set_online(card->gdev, 1);
1262                 if (rc) {
1263                         rtnl_lock();
1264                         dev_close(card->dev);
1265                         rtnl_unlock();
1266                 }
1267         } else
1268                 rc = __qeth_l2_set_online(card->gdev, 0);
1269 out:
1270         qeth_set_allowed_threads(card, 0xffffffff, 0);
1271         if (card->dev)
1272                 netif_device_attach(card->dev);
1273         if (rc)
1274                 dev_warn(&card->gdev->dev, "The qeth device driver "
1275                         "failed to recover an error on the device\n");
1276         return rc;
1277 }
1278
1279 /* Returns zero if the command is successfully "consumed" */
1280 static int qeth_l2_control_event(struct qeth_card *card,
1281                                         struct qeth_ipa_cmd *cmd)
1282 {
1283         switch (cmd->hdr.command) {
1284         case IPA_CMD_SETBRIDGEPORT_OSA:
1285         case IPA_CMD_SETBRIDGEPORT_IQD:
1286                 if (cmd->data.sbp.hdr.command_code ==
1287                                 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1288                         qeth_bridge_state_change(card, cmd);
1289                         return 0;
1290                 } else
1291                         return 1;
1292         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1293                 qeth_bridge_host_event(card, cmd);
1294                 return 0;
1295         default:
1296                 return 1;
1297         }
1298 }
1299
1300 struct qeth_discipline qeth_l2_discipline = {
1301         .start_poll = qeth_qdio_start_poll,
1302         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1303         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1304         .recover = qeth_l2_recover,
1305         .setup = qeth_l2_probe_device,
1306         .remove = qeth_l2_remove_device,
1307         .set_online = qeth_l2_set_online,
1308         .set_offline = qeth_l2_set_offline,
1309         .shutdown = qeth_l2_shutdown,
1310         .freeze = qeth_l2_pm_suspend,
1311         .thaw = qeth_l2_pm_resume,
1312         .restore = qeth_l2_pm_resume,
1313         .control_event_handler = qeth_l2_control_event,
1314 };
1315 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1316
1317 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1318                            struct qeth_cmd_buffer *iob)
1319 {
1320         unsigned long flags;
1321         int rc = 0;
1322
1323         QETH_CARD_TEXT(card, 5, "osndctrd");
1324
1325         wait_event(card->wait_q,
1326                    atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1327         qeth_prepare_control_data(card, len, iob);
1328         QETH_CARD_TEXT(card, 6, "osnoirqp");
1329         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1330         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1331                               (addr_t) iob, 0, 0);
1332         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1333         if (rc) {
1334                 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1335                            "ccw_device_start rc = %i\n", rc);
1336                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1337                 qeth_release_buffer(iob->channel, iob);
1338                 atomic_set(&card->write.irq_pending, 0);
1339                 wake_up(&card->wait_q);
1340         }
1341         return rc;
1342 }
1343
1344 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1345                         struct qeth_cmd_buffer *iob, int data_len)
1346 {
1347         u16 s1, s2;
1348
1349         QETH_CARD_TEXT(card, 4, "osndipa");
1350
1351         qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1352         s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1353         s2 = (u16)data_len;
1354         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1355         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1356         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1357         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1358         return qeth_osn_send_control_data(card, s1, iob);
1359 }
1360
1361 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1362 {
1363         struct qeth_cmd_buffer *iob;
1364         struct qeth_card *card;
1365         int rc;
1366
1367         if (!dev)
1368                 return -ENODEV;
1369         card = dev->ml_priv;
1370         if (!card)
1371                 return -ENODEV;
1372         QETH_CARD_TEXT(card, 2, "osnsdmc");
1373         if (!qeth_card_hw_is_reachable(card))
1374                 return -ENODEV;
1375         iob = qeth_wait_for_buffer(&card->write);
1376         memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1377         rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1378         return rc;
1379 }
1380 EXPORT_SYMBOL(qeth_osn_assist);
1381
1382 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1383                   int (*assist_cb)(struct net_device *, void *),
1384                   int (*data_cb)(struct sk_buff *))
1385 {
1386         struct qeth_card *card;
1387
1388         *dev = qeth_l2_netdev_by_devno(read_dev_no);
1389         if (*dev == NULL)
1390                 return -ENODEV;
1391         card = (*dev)->ml_priv;
1392         if (!card)
1393                 return -ENODEV;
1394         QETH_CARD_TEXT(card, 2, "osnreg");
1395         if ((assist_cb == NULL) || (data_cb == NULL))
1396                 return -EINVAL;
1397         card->osn_info.assist_cb = assist_cb;
1398         card->osn_info.data_cb = data_cb;
1399         return 0;
1400 }
1401 EXPORT_SYMBOL(qeth_osn_register);
1402
1403 void qeth_osn_deregister(struct net_device *dev)
1404 {
1405         struct qeth_card *card;
1406
1407         if (!dev)
1408                 return;
1409         card = dev->ml_priv;
1410         if (!card)
1411                 return;
1412         QETH_CARD_TEXT(card, 2, "osndereg");
1413         card->osn_info.assist_cb = NULL;
1414         card->osn_info.data_cb = NULL;
1415         return;
1416 }
1417 EXPORT_SYMBOL(qeth_osn_deregister);
1418
1419 /* SETBRIDGEPORT support, async notifications */
1420
1421 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1422
1423 /**
1424  * qeth_bridge_emit_host_event() - bridgeport address change notification
1425  * @card:  qeth_card structure pointer, for udev events.
1426  * @evtype:  "normal" register/unregister, or abort, or reset. For abort
1427  *            and reset token and addr_lnid are unused and may be NULL.
1428  * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
1429  *                        object, 0 - addition of an object.
1430  *                        0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1431  * @token: "network token" structure identifying physical address of the port.
1432  * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1433  *
1434  * This function is called when registrations and deregistrations are
1435  * reported by the hardware, and also when notifications are enabled -
1436  * for all currently registered addresses.
1437  */
1438 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1439         enum qeth_an_event_type evtype,
1440         u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1441 {
1442         char str[7][32];
1443         char *env[8];
1444         int i = 0;
1445
1446         switch (evtype) {
1447         case anev_reg_unreg:
1448                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1449                                 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1450                                 ? "deregister" : "register");
1451                 env[i] = str[i]; i++;
1452                 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1453                         snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1454                                 addr_lnid->lnid);
1455                         env[i] = str[i]; i++;
1456                 }
1457                 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1458                         snprintf(str[i], sizeof(str[i]), "MAC=%pM6",
1459                                 &addr_lnid->mac);
1460                         env[i] = str[i]; i++;
1461                 }
1462                 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1463                         token->cssid, token->ssid, token->devnum);
1464                 env[i] = str[i]; i++;
1465                 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1466                 env[i] = str[i]; i++;
1467                 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1468                                 token->chpid);
1469                 env[i] = str[i]; i++;
1470                 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1471                 env[i] = str[i]; i++;
1472                 break;
1473         case anev_abort:
1474                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1475                 env[i] = str[i]; i++;
1476                 break;
1477         case anev_reset:
1478                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1479                 env[i] = str[i]; i++;
1480                 break;
1481         }
1482         env[i] = NULL;
1483         kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1484 }
1485
1486 struct qeth_bridge_state_data {
1487         struct work_struct worker;
1488         struct qeth_card *card;
1489         struct qeth_sbp_state_change qports;
1490 };
1491
1492 static void qeth_bridge_state_change_worker(struct work_struct *work)
1493 {
1494         struct qeth_bridge_state_data *data =
1495                 container_of(work, struct qeth_bridge_state_data, worker);
1496         /* We are only interested in the first entry - local port */
1497         struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1498         char env_locrem[32];
1499         char env_role[32];
1500         char env_state[32];
1501         char *env[] = {
1502                 env_locrem,
1503                 env_role,
1504                 env_state,
1505                 NULL
1506         };
1507
1508         /* Role should not change by itself, but if it did, */
1509         /* information from the hardware is authoritative.  */
1510         mutex_lock(&data->card->conf_mutex);
1511         data->card->options.sbp.role = entry->role;
1512         mutex_unlock(&data->card->conf_mutex);
1513
1514         snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1515         snprintf(env_role, sizeof(env_role), "ROLE=%s",
1516                 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1517                 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1518                 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1519                 "<INVALID>");
1520         snprintf(env_state, sizeof(env_state), "STATE=%s",
1521                 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1522                 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1523                 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1524                 "<INVALID>");
1525         kobject_uevent_env(&data->card->gdev->dev.kobj,
1526                                 KOBJ_CHANGE, env);
1527         kfree(data);
1528 }
1529
1530 static void qeth_bridge_state_change(struct qeth_card *card,
1531                                         struct qeth_ipa_cmd *cmd)
1532 {
1533         struct qeth_sbp_state_change *qports =
1534                  &cmd->data.sbp.data.state_change;
1535         struct qeth_bridge_state_data *data;
1536         int extrasize;
1537
1538         QETH_CARD_TEXT(card, 2, "brstchng");
1539         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1540                 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1541                 return;
1542         }
1543         extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1544         data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1545                 GFP_ATOMIC);
1546         if (!data) {
1547                 QETH_CARD_TEXT(card, 2, "BPSalloc");
1548                 return;
1549         }
1550         INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1551         data->card = card;
1552         memcpy(&data->qports, qports,
1553                         sizeof(struct qeth_sbp_state_change) + extrasize);
1554         queue_work(qeth_wq, &data->worker);
1555 }
1556
1557 struct qeth_bridge_host_data {
1558         struct work_struct worker;
1559         struct qeth_card *card;
1560         struct qeth_ipacmd_addr_change hostevs;
1561 };
1562
1563 static void qeth_bridge_host_event_worker(struct work_struct *work)
1564 {
1565         struct qeth_bridge_host_data *data =
1566                 container_of(work, struct qeth_bridge_host_data, worker);
1567         int i;
1568
1569         if (data->hostevs.lost_event_mask) {
1570                 dev_info(&data->card->gdev->dev,
1571 "Address notification from the Bridge Port stopped %s (%s)\n",
1572                         data->card->dev->name,
1573                         (data->hostevs.lost_event_mask == 0x01)
1574                         ? "Overflow"
1575                         : (data->hostevs.lost_event_mask == 0x02)
1576                         ? "Bridge port state change"
1577                         : "Unknown reason");
1578                 mutex_lock(&data->card->conf_mutex);
1579                 data->card->options.sbp.hostnotification = 0;
1580                 mutex_unlock(&data->card->conf_mutex);
1581                 qeth_bridge_emit_host_event(data->card, anev_abort,
1582                         0, NULL, NULL);
1583         } else
1584                 for (i = 0; i < data->hostevs.num_entries; i++) {
1585                         struct qeth_ipacmd_addr_change_entry *entry =
1586                                         &data->hostevs.entry[i];
1587                         qeth_bridge_emit_host_event(data->card,
1588                                         anev_reg_unreg,
1589                                         entry->change_code,
1590                                         &entry->token, &entry->addr_lnid);
1591                 }
1592         kfree(data);
1593 }
1594
1595 static void qeth_bridge_host_event(struct qeth_card *card,
1596                                         struct qeth_ipa_cmd *cmd)
1597 {
1598         struct qeth_ipacmd_addr_change *hostevs =
1599                  &cmd->data.addrchange;
1600         struct qeth_bridge_host_data *data;
1601         int extrasize;
1602
1603         QETH_CARD_TEXT(card, 2, "brhostev");
1604         if (cmd->hdr.return_code != 0x0000) {
1605                 if (cmd->hdr.return_code == 0x0010) {
1606                         if (hostevs->lost_event_mask == 0x00)
1607                                 hostevs->lost_event_mask = 0xff;
1608                 } else {
1609                         QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1610                                 cmd->hdr.return_code);
1611                         return;
1612                 }
1613         }
1614         extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1615                                                 hostevs->num_entries;
1616         data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1617                 GFP_ATOMIC);
1618         if (!data) {
1619                 QETH_CARD_TEXT(card, 2, "BPHalloc");
1620                 return;
1621         }
1622         INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1623         data->card = card;
1624         memcpy(&data->hostevs, hostevs,
1625                         sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1626         queue_work(qeth_wq, &data->worker);
1627 }
1628
1629 /* SETBRIDGEPORT support; sending commands */
1630
1631 struct _qeth_sbp_cbctl {
1632         u16 ipa_rc;
1633         u16 cmd_rc;
1634         union {
1635                 u32 supported;
1636                 struct {
1637                         enum qeth_sbp_roles *role;
1638                         enum qeth_sbp_states *state;
1639                 } qports;
1640         } data;
1641 };
1642
1643 /**
1644  * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1645  * @card:                     qeth_card structure pointer, for debug messages.
1646  * @cbctl:                    state structure with hardware return codes.
1647  * @setcmd:                   IPA command code
1648  *
1649  * Returns negative errno-compatible error indication or 0 on success.
1650  */
1651 static int qeth_bridgeport_makerc(struct qeth_card *card,
1652         struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1653 {
1654         int rc;
1655         int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1656
1657         if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1658             (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1659                 switch (cbctl->cmd_rc) {
1660                 case 0x0000:
1661                         rc = 0;
1662                         break;
1663                 case 0x2B04:
1664                 case 0x0004:
1665                         rc = -EOPNOTSUPP;
1666                         break;
1667                 case 0x2B0C:
1668                 case 0x000C: /* Not configured as bridge Port */
1669                         rc = -ENODEV; /* maybe not the best code here? */
1670                         dev_err(&card->gdev->dev,
1671         "The device is not configured as a Bridge Port\n");
1672                         break;
1673                 case 0x2B14:
1674                 case 0x0014: /* Another device is Primary */
1675                         switch (setcmd) {
1676                         case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1677                                 rc = -EEXIST;
1678                                 dev_err(&card->gdev->dev,
1679         "The LAN already has a primary Bridge Port\n");
1680                                 break;
1681                         case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1682                                 rc = -EBUSY;
1683                                 dev_err(&card->gdev->dev,
1684         "The device is already a primary Bridge Port\n");
1685                                 break;
1686                         default:
1687                                 rc = -EIO;
1688                         }
1689                         break;
1690                 case 0x2B18:
1691                 case 0x0018: /* This device is currently Secondary */
1692                         rc = -EBUSY;
1693                         dev_err(&card->gdev->dev,
1694         "The device is already a secondary Bridge Port\n");
1695                         break;
1696                 case 0x2B1C:
1697                 case 0x001C: /* Limit for Secondary devices reached */
1698                         rc = -EEXIST;
1699                         dev_err(&card->gdev->dev,
1700         "The LAN cannot have more secondary Bridge Ports\n");
1701                         break;
1702                 case 0x2B24:
1703                 case 0x0024: /* This device is currently Primary */
1704                         rc = -EBUSY;
1705                         dev_err(&card->gdev->dev,
1706         "The device is already a primary Bridge Port\n");
1707                         break;
1708                 case 0x2B20:
1709                 case 0x0020: /* Not authorized by zManager */
1710                         rc = -EACCES;
1711                         dev_err(&card->gdev->dev,
1712         "The device is not authorized to be a Bridge Port\n");
1713                         break;
1714                 default:
1715                         rc = -EIO;
1716                 }
1717         else
1718                 switch (cbctl->ipa_rc) {
1719                 case IPA_RC_NOTSUPP:
1720                         rc = -EOPNOTSUPP;
1721                         break;
1722                 case IPA_RC_UNSUPPORTED_COMMAND:
1723                         rc = -EOPNOTSUPP;
1724                         break;
1725                 default:
1726                         rc = -EIO;
1727                 }
1728
1729         if (rc) {
1730                 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1731                 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1732         }
1733         return rc;
1734 }
1735
1736 static inline int ipa_cmd_sbp(struct qeth_card *card)
1737 {
1738         return (card->info.type == QETH_CARD_TYPE_IQD) ?
1739                 IPA_CMD_SETBRIDGEPORT_IQD :
1740                 IPA_CMD_SETBRIDGEPORT_OSA;
1741 }
1742
1743 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1744         struct qeth_reply *reply, unsigned long data)
1745 {
1746         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1747         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1748         QETH_CARD_TEXT(card, 2, "brqsupcb");
1749         cbctl->ipa_rc = cmd->hdr.return_code;
1750         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1751         if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1752                 cbctl->data.supported =
1753                         cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1754         } else {
1755                 cbctl->data.supported = 0;
1756         }
1757         return 0;
1758 }
1759
1760 /**
1761  * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1762  * @card:                            qeth_card structure pointer.
1763  *
1764  * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1765  * strucutre: card->options.sbp.supported_funcs.
1766  */
1767 static void qeth_bridgeport_query_support(struct qeth_card *card)
1768 {
1769         struct qeth_cmd_buffer *iob;
1770         struct qeth_ipa_cmd *cmd;
1771         struct _qeth_sbp_cbctl cbctl;
1772
1773         QETH_CARD_TEXT(card, 2, "brqsuppo");
1774         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1775         if (!iob)
1776                 return;
1777         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1778         cmd->data.sbp.hdr.cmdlength =
1779                 sizeof(struct qeth_ipacmd_sbp_hdr) +
1780                 sizeof(struct qeth_sbp_query_cmds_supp);
1781         cmd->data.sbp.hdr.command_code =
1782                 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1783         cmd->data.sbp.hdr.used_total = 1;
1784         cmd->data.sbp.hdr.seq_no = 1;
1785         if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1786                                                         (void *)&cbctl) ||
1787             qeth_bridgeport_makerc(card, &cbctl,
1788                                         IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1789                 /* non-zero makerc signifies failure, and produce messages */
1790                 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1791                 return;
1792         }
1793         card->options.sbp.supported_funcs = cbctl.data.supported;
1794 }
1795
1796 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1797         struct qeth_reply *reply, unsigned long data)
1798 {
1799         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1800         struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1801         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1802
1803         QETH_CARD_TEXT(card, 2, "brqprtcb");
1804         cbctl->ipa_rc = cmd->hdr.return_code;
1805         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1806         if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1807                 return 0;
1808         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1809                 cbctl->cmd_rc = 0xffff;
1810                 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1811                 return 0;
1812         }
1813         /* first entry contains the state of the local port */
1814         if (qports->num_entries > 0) {
1815                 if (cbctl->data.qports.role)
1816                         *cbctl->data.qports.role = qports->entry[0].role;
1817                 if (cbctl->data.qports.state)
1818                         *cbctl->data.qports.state = qports->entry[0].state;
1819         }
1820         return 0;
1821 }
1822
1823 /**
1824  * qeth_bridgeport_query_ports() - query local bridgeport status.
1825  * @card:                          qeth_card structure pointer.
1826  * @role:   Role of the port: 0-none, 1-primary, 2-secondary.
1827  * @state:  State of the port: 0-inactive, 1-standby, 2-active.
1828  *
1829  * Returns negative errno-compatible error indication or 0 on success.
1830  *
1831  * 'role' and 'state' are not updated in case of hardware operation failure.
1832  */
1833 int qeth_bridgeport_query_ports(struct qeth_card *card,
1834         enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1835 {
1836         int rc = 0;
1837         struct qeth_cmd_buffer *iob;
1838         struct qeth_ipa_cmd *cmd;
1839         struct _qeth_sbp_cbctl cbctl = {
1840                 .data = {
1841                         .qports = {
1842                                 .role = role,
1843                                 .state = state,
1844                         },
1845                 },
1846         };
1847
1848         QETH_CARD_TEXT(card, 2, "brqports");
1849         if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1850                 return -EOPNOTSUPP;
1851         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1852         if (!iob)
1853                 return -ENOMEM;
1854         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1855         cmd->data.sbp.hdr.cmdlength =
1856                 sizeof(struct qeth_ipacmd_sbp_hdr);
1857         cmd->data.sbp.hdr.command_code =
1858                 IPA_SBP_QUERY_BRIDGE_PORTS;
1859         cmd->data.sbp.hdr.used_total = 1;
1860         cmd->data.sbp.hdr.seq_no = 1;
1861         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1862                                 (void *)&cbctl);
1863         if (rc < 0)
1864                 return rc;
1865         return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1866 }
1867 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1868
1869 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1870         struct qeth_reply *reply, unsigned long data)
1871 {
1872         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1873         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1874         QETH_CARD_TEXT(card, 2, "brsetrcb");
1875         cbctl->ipa_rc = cmd->hdr.return_code;
1876         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1877         return 0;
1878 }
1879
1880 /**
1881  * qeth_bridgeport_setrole() - Assign primary role to the port.
1882  * @card:                      qeth_card structure pointer.
1883  * @role:                      Role to assign.
1884  *
1885  * Returns negative errno-compatible error indication or 0 on success.
1886  */
1887 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1888 {
1889         int rc = 0;
1890         int cmdlength;
1891         struct qeth_cmd_buffer *iob;
1892         struct qeth_ipa_cmd *cmd;
1893         struct _qeth_sbp_cbctl cbctl;
1894         enum qeth_ipa_sbp_cmd setcmd;
1895
1896         QETH_CARD_TEXT(card, 2, "brsetrol");
1897         switch (role) {
1898         case QETH_SBP_ROLE_NONE:
1899                 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1900                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1901                         sizeof(struct qeth_sbp_reset_role);
1902                 break;
1903         case QETH_SBP_ROLE_PRIMARY:
1904                 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1905                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1906                         sizeof(struct qeth_sbp_set_primary);
1907                 break;
1908         case QETH_SBP_ROLE_SECONDARY:
1909                 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1910                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1911                         sizeof(struct qeth_sbp_set_secondary);
1912                 break;
1913         default:
1914                 return -EINVAL;
1915         }
1916         if (!(card->options.sbp.supported_funcs & setcmd))
1917                 return -EOPNOTSUPP;
1918         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1919         if (!iob)
1920                 return -ENOMEM;
1921         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1922         cmd->data.sbp.hdr.cmdlength = cmdlength;
1923         cmd->data.sbp.hdr.command_code = setcmd;
1924         cmd->data.sbp.hdr.used_total = 1;
1925         cmd->data.sbp.hdr.seq_no = 1;
1926         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1927                                 (void *)&cbctl);
1928         if (rc < 0)
1929                 return rc;
1930         return qeth_bridgeport_makerc(card, &cbctl, setcmd);
1931 }
1932
1933 /**
1934  * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1935  * @card:                     qeth_card structure pointer, for debug messages.
1936  *
1937  * Returns negative errno-compatible error indication or 0 on success.
1938  */
1939 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1940 {
1941         int rc;
1942
1943         if (pnso_rc == 0)
1944                 switch (response) {
1945                 case 0x0001:
1946                         rc = 0;
1947                         break;
1948                 case 0x0004:
1949                 case 0x0100:
1950                 case 0x0106:
1951                         rc = -EOPNOTSUPP;
1952                         dev_err(&card->gdev->dev,
1953                                 "Setting address notification failed\n");
1954                         break;
1955                 case 0x0107:
1956                         rc = -EAGAIN;
1957                         break;
1958                 default:
1959                         rc = -EIO;
1960                 }
1961         else
1962                 rc = -EIO;
1963
1964         if (rc) {
1965                 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1966                 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1967         }
1968         return rc;
1969 }
1970
1971 static void qeth_bridgeport_an_set_cb(void *priv,
1972                 enum qdio_brinfo_entry_type type, void *entry)
1973 {
1974         struct qeth_card *card = (struct qeth_card *)priv;
1975         struct qdio_brinfo_entry_l2 *l2entry;
1976         u8 code;
1977
1978         if (type != l2_addr_lnid) {
1979                 WARN_ON_ONCE(1);
1980                 return;
1981         }
1982
1983         l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1984         code = IPA_ADDR_CHANGE_CODE_MACADDR;
1985         if (l2entry->addr_lnid.lnid)
1986                 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1987         qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1988                 (struct net_if_token *)&l2entry->nit,
1989                 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1990 }
1991
1992 /**
1993  * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1994  * @card:                     qeth_card structure pointer.
1995  * @enable:                   0 - disable, non-zero - enable notifications
1996  *
1997  * Returns negative errno-compatible error indication or 0 on success.
1998  *
1999  * On enable, emits a series of address notifications udev events for all
2000  * currently registered hosts.
2001  */
2002 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2003 {
2004         int rc;
2005         u16 response;
2006         struct ccw_device *ddev;
2007         struct subchannel_id schid;
2008
2009         if (!card)
2010                 return -EINVAL;
2011         if (!card->options.sbp.supported_funcs)
2012                 return -EOPNOTSUPP;
2013         ddev = CARD_DDEV(card);
2014         ccw_device_get_schid(ddev, &schid);
2015
2016         if (enable) {
2017                 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2018                 rc = qdio_pnso_brinfo(schid, 1, &response,
2019                         qeth_bridgeport_an_set_cb, card);
2020         } else
2021                 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2022         return qeth_anset_makerc(card, rc, response);
2023 }
2024 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2025
2026 module_init(qeth_l2_init);
2027 module_exit(qeth_l2_exit);
2028 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2029 MODULE_DESCRIPTION("qeth layer 2 discipline");
2030 MODULE_LICENSE("GPL");