kernel/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 = -ENOSYS;
 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_l2_set_multicast_list(struct net_device *dev)
 687 {
 688         struct qeth_card *card = dev->ml_priv;
 689         struct netdev_hw_addr *ha;
 690
 691         if (card->info.type == QETH_CARD_TYPE_OSN)
 692                 return ;
 693
 694         QETH_CARD_TEXT(card, 3, "setmulti");
 695         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
 696             (card->state != CARD_STATE_UP))
 697                 return;
 698         qeth_l2_del_all_mc(card, 1);
 699         spin_lock_bh(&card->mclock);
 700         netdev_for_each_mc_addr(ha, dev)
 701                 qeth_l2_add_mc(card, ha->addr, 0);
 702
 703         netdev_for_each_uc_addr(ha, dev)
 704                 qeth_l2_add_mc(card, ha->addr, 1);
 705
 706         spin_unlock_bh(&card->mclock);
 707         if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 708                 return;
 709         qeth_setadp_promisc_mode(card);
 710 }
 711
 712 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 713 {
 714         int rc;
 715         struct qeth_hdr *hdr = NULL;
 716         int elements = 0;
 717         struct qeth_card *card = dev->ml_priv;
 718         struct sk_buff *new_skb = skb;
 719         int cast_type = qeth_l2_get_cast_type(card, skb);
 720         struct qeth_qdio_out_q *queue;
 721         int tx_bytes = skb->len;
 722         int data_offset = -1;
 723         int elements_needed = 0;
 724         int hd_len = 0;
 725
 726         if (card->qdio.do_prio_queueing || (cast_type &&
 727                                         card->info.is_multicast_different))
 728                 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
 729                                         qeth_get_ip_version(skb), cast_type)];
 730         else
 731                 queue = card->qdio.out_qs[card->qdio.default_out_queue];
 732
 733         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
 734                 card->stats.tx_carrier_errors++;
 735                 goto tx_drop;
 736         }
 737
 738         if ((card->info.type == QETH_CARD_TYPE_OSN) &&
 739             (skb->protocol == htons(ETH_P_IPV6)))
 740                 goto tx_drop;
 741
 742         if (card->options.performance_stats) {
 743                 card->perf_stats.outbound_cnt++;
 744                 card->perf_stats.outbound_start_time = qeth_get_micros();
 745         }
 746         netif_stop_queue(dev);
 747
 748         if (card->info.type == QETH_CARD_TYPE_OSN)
 749                 hdr = (struct qeth_hdr *)skb->data;
 750         else {
 751                 if (card->info.type == QETH_CARD_TYPE_IQD) {
 752                         new_skb = skb;
 753                         data_offset = ETH_HLEN;
 754                         hd_len = ETH_HLEN;
 755                         hdr = kmem_cache_alloc(qeth_core_header_cache,
 756                                                 GFP_ATOMIC);
 757                         if (!hdr)
 758                                 goto tx_drop;
 759                         elements_needed++;
 760                         skb_reset_mac_header(new_skb);
 761                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 762                         hdr->hdr.l2.pkt_length = new_skb->len;
 763                         memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
 764                                 skb_mac_header(new_skb), ETH_HLEN);
 765                 } else {
 766                         /* create a clone with writeable headroom */
 767                         new_skb = skb_realloc_headroom(skb,
 768                                                 sizeof(struct qeth_hdr));
 769                         if (!new_skb)
 770                                 goto tx_drop;
 771                         hdr = (struct qeth_hdr *)skb_push(new_skb,
 772                                                 sizeof(struct qeth_hdr));
 773                         skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
 774                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 775                 }
 776         }
 777
 778         elements = qeth_get_elements_no(card, new_skb, elements_needed);
 779         if (!elements) {
 780                 if (data_offset >= 0)
 781                         kmem_cache_free(qeth_core_header_cache, hdr);
 782                 goto tx_drop;
 783         }
 784
 785         if (card->info.type != QETH_CARD_TYPE_IQD) {
 786                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
 787                     sizeof(struct qeth_hdr_layer2)))
 788                         goto tx_drop;
 789                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
 790                                          elements);
 791         } else
 792                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
 793                                         elements, data_offset, hd_len);
 794         if (!rc) {
 795                 card->stats.tx_packets++;
 796                 card->stats.tx_bytes += tx_bytes;
 797                 if (new_skb != skb)
 798                         dev_kfree_skb_any(skb);
 799                 rc = NETDEV_TX_OK;
 800         } else {
 801                 if (data_offset >= 0)
 802                         kmem_cache_free(qeth_core_header_cache, hdr);
 803
 804                 if (rc == -EBUSY) {
 805                         if (new_skb != skb)
 806                                 dev_kfree_skb_any(new_skb);
 807                         return NETDEV_TX_BUSY;
 808                 } else
 809                         goto tx_drop;
 810         }
 811
 812         netif_wake_queue(dev);
 813         if (card->options.performance_stats)
 814                 card->perf_stats.outbound_time += qeth_get_micros() -
 815                         card->perf_stats.outbound_start_time;
 816         return rc;
 817
 818 tx_drop:
 819         card->stats.tx_dropped++;
 820         card->stats.tx_errors++;
 821         if ((new_skb != skb) && new_skb)
 822                 dev_kfree_skb_any(new_skb);
 823         dev_kfree_skb_any(skb);
 824         netif_wake_queue(dev);
 825         return NETDEV_TX_OK;
 826 }
 827
 828 static int __qeth_l2_open(struct net_device *dev)
 829 {
 830         struct qeth_card *card = dev->ml_priv;
 831         int rc = 0;
 832
 833         QETH_CARD_TEXT(card, 4, "qethopen");
 834         if (card->state == CARD_STATE_UP)
 835                 return rc;
 836         if (card->state != CARD_STATE_SOFTSETUP)
 837                 return -ENODEV;
 838
 839         if ((card->info.type != QETH_CARD_TYPE_OSN) &&
 840              (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
 841                 QETH_CARD_TEXT(card, 4, "nomacadr");
 842                 return -EPERM;
 843         }
 844         card->data.state = CH_STATE_UP;
 845         card->state = CARD_STATE_UP;
 846         netif_start_queue(dev);
 847
 848         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
 849                 napi_enable(&card->napi);
 850                 napi_schedule(&card->napi);
 851         } else
 852                 rc = -EIO;
 853         return rc;
 854 }
 855
 856 static int qeth_l2_open(struct net_device *dev)
 857 {
 858         struct qeth_card *card = dev->ml_priv;
 859
 860         QETH_CARD_TEXT(card, 5, "qethope_");
 861         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 862                 QETH_CARD_TEXT(card, 3, "openREC");
 863                 return -ERESTARTSYS;
 864         }
 865         return __qeth_l2_open(dev);
 866 }
 867
 868 static int qeth_l2_stop(struct net_device *dev)
 869 {
 870         struct qeth_card *card = dev->ml_priv;
 871
 872         QETH_CARD_TEXT(card, 4, "qethstop");
 873         netif_tx_disable(dev);
 874         if (card->state == CARD_STATE_UP) {
 875                 card->state = CARD_STATE_SOFTSETUP;
 876                 napi_disable(&card->napi);
 877         }
 878         return 0;
 879 }
 880
 881 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
 882 {
 883         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 884
 885         qeth_l2_create_device_attributes(&gdev->dev);
 886         INIT_LIST_HEAD(&card->vid_list);
 887         INIT_LIST_HEAD(&card->mc_list);
 888         card->options.layer2 = 1;
 889         card->info.hwtrap = 0;
 890         return 0;
 891 }
 892
 893 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
 894 {
 895         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
 896
 897         qeth_l2_remove_device_attributes(&cgdev->dev);
 898         qeth_set_allowed_threads(card, 0, 1);
 899         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
 900
 901         if (cgdev->state == CCWGROUP_ONLINE)
 902                 qeth_l2_set_offline(cgdev);
 903
 904         if (card->dev) {
 905                 unregister_netdev(card->dev);
 906                 card->dev = NULL;
 907         }
 908         return;
 909 }
 910
 911 static const struct ethtool_ops qeth_l2_ethtool_ops = {
 912         .get_link = ethtool_op_get_link,
 913         .get_strings = qeth_core_get_strings,
 914         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 915         .get_sset_count = qeth_core_get_sset_count,
 916         .get_drvinfo = qeth_core_get_drvinfo,
 917         .get_settings = qeth_core_ethtool_get_settings,
 918 };
 919
 920 static const struct ethtool_ops qeth_l2_osn_ops = {
 921         .get_strings = qeth_core_get_strings,
 922         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 923         .get_sset_count = qeth_core_get_sset_count,
 924         .get_drvinfo = qeth_core_get_drvinfo,
 925 };
 926
 927 static const struct net_device_ops qeth_l2_netdev_ops = {
 928         .ndo_open               = qeth_l2_open,
 929         .ndo_stop               = qeth_l2_stop,
 930         .ndo_get_stats          = qeth_get_stats,
 931         .ndo_start_xmit         = qeth_l2_hard_start_xmit,
 932         .ndo_validate_addr      = eth_validate_addr,
 933         .ndo_set_rx_mode        = qeth_l2_set_multicast_list,
 934         .ndo_do_ioctl           = qeth_l2_do_ioctl,
 935         .ndo_set_mac_address    = qeth_l2_set_mac_address,
 936         .ndo_change_mtu         = qeth_change_mtu,
 937         .ndo_vlan_rx_add_vid    = qeth_l2_vlan_rx_add_vid,
 938         .ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
 939         .ndo_tx_timeout         = qeth_tx_timeout,
 940 };
 941
 942 static int qeth_l2_setup_netdev(struct qeth_card *card)
 943 {
 944         switch (card->info.type) {
 945         case QETH_CARD_TYPE_IQD:
 946                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
 947                                          ether_setup);
 948                 break;
 949         case QETH_CARD_TYPE_OSN:
 950                 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
 951                                          ether_setup);
 952                 card->dev->flags |= IFF_NOARP;
 953                 break;
 954         default:
 955                 card->dev = alloc_etherdev(0);
 956         }
 957
 958         if (!card->dev)
 959                 return -ENODEV;
 960
 961         card->dev->ml_priv = card;
 962         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
 963         card->dev->mtu = card->info.initial_mtu;
 964         card->dev->netdev_ops = &qeth_l2_netdev_ops;
 965         card->dev->ethtool_ops =
 966                 (card->info.type != QETH_CARD_TYPE_OSN) ?
 967                 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
 968         card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
 969         card->info.broadcast_capable = 1;
 970         qeth_l2_request_initial_mac(card);
 971         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
 972         netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
 973         return register_netdev(card->dev);
 974 }
 975
 976 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 977 {
 978         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 979         int rc = 0;
 980         enum qeth_card_states recover_flag;
 981
 982         mutex_lock(&card->discipline_mutex);
 983         mutex_lock(&card->conf_mutex);
 984         QETH_DBF_TEXT(SETUP, 2, "setonlin");
 985         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 986
 987         recover_flag = card->state;
 988         rc = qeth_core_hardsetup_card(card);
 989         if (rc) {
 990                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
 991                 rc = -ENODEV;
 992                 goto out_remove;
 993         }
 994         qeth_bridgeport_query_support(card);
 995         if (card->options.sbp.supported_funcs)
 996                 dev_info(&card->gdev->dev,
 997                 "The device represents a HiperSockets Bridge Capable Port\n");
 998         qeth_trace_features(card);
 999
1000         if (!card->dev && qeth_l2_setup_netdev(card)) {
1001                 rc = -ENODEV;
1002                 goto out_remove;
1003         }
1004
1005         if (card->info.type != QETH_CARD_TYPE_OSN)
1006                 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1007
1008         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1009                 if (card->info.hwtrap &&
1010                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1011                         card->info.hwtrap = 0;
1012         } else
1013                 card->info.hwtrap = 0;
1014
1015         qeth_l2_setup_bridgeport_attrs(card);
1016
1017         card->state = CARD_STATE_HARDSETUP;
1018         memset(&card->rx, 0, sizeof(struct qeth_rx));
1019         qeth_print_status_message(card);
1020
1021         /* softsetup */
1022         QETH_DBF_TEXT(SETUP, 2, "softsetp");
1023
1024         rc = qeth_send_startlan(card);
1025         if (rc) {
1026                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1027                 if (rc == 0xe080) {
1028                         dev_warn(&card->gdev->dev,
1029                                 "The LAN is offline\n");
1030                         card->lan_online = 0;
1031                         goto contin;
1032                 }
1033                 rc = -ENODEV;
1034                 goto out_remove;
1035         } else
1036                 card->lan_online = 1;
1037
1038 contin:
1039         if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1040             (card->info.type == QETH_CARD_TYPE_OSX)) {
1041                 /* configure isolation level */
1042                 rc = qeth_set_access_ctrl_online(card, 0);
1043                 if (rc) {
1044                         rc = -ENODEV;
1045                         goto out_remove;
1046                 }
1047         }
1048
1049         if (card->info.type != QETH_CARD_TYPE_OSN &&
1050             card->info.type != QETH_CARD_TYPE_OSM)
1051                 qeth_l2_process_vlans(card);
1052
1053         netif_tx_disable(card->dev);
1054
1055         rc = qeth_init_qdio_queues(card);
1056         if (rc) {
1057                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1058                 rc = -ENODEV;
1059                 goto out_remove;
1060         }
1061         card->state = CARD_STATE_SOFTSETUP;
1062         if (card->lan_online)
1063                 netif_carrier_on(card->dev);
1064         else
1065                 netif_carrier_off(card->dev);
1066
1067         qeth_set_allowed_threads(card, 0xffffffff, 0);
1068         if (recover_flag == CARD_STATE_RECOVER) {
1069                 if (recovery_mode &&
1070                     card->info.type != QETH_CARD_TYPE_OSN) {
1071                         __qeth_l2_open(card->dev);
1072                 } else {
1073                         rtnl_lock();
1074                         dev_open(card->dev);
1075                         rtnl_unlock();
1076                 }
1077                 /* this also sets saved unicast addresses */
1078                 qeth_l2_set_multicast_list(card->dev);
1079         }
1080         /* let user_space know that device is online */
1081         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1082         mutex_unlock(&card->conf_mutex);
1083         mutex_unlock(&card->discipline_mutex);
1084         return 0;
1085
1086 out_remove:
1087         qeth_l2_stop_card(card, 0);
1088         ccw_device_set_offline(CARD_DDEV(card));
1089         ccw_device_set_offline(CARD_WDEV(card));
1090         ccw_device_set_offline(CARD_RDEV(card));
1091         qdio_free(CARD_DDEV(card));
1092         if (recover_flag == CARD_STATE_RECOVER)
1093                 card->state = CARD_STATE_RECOVER;
1094         else
1095                 card->state = CARD_STATE_DOWN;
1096         mutex_unlock(&card->conf_mutex);
1097         mutex_unlock(&card->discipline_mutex);
1098         return rc;
1099 }
1100
1101 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1102 {
1103         return __qeth_l2_set_online(gdev, 0);
1104 }
1105
1106 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1107                                         int recovery_mode)
1108 {
1109         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1110         int rc = 0, rc2 = 0, rc3 = 0;
1111         enum qeth_card_states recover_flag;
1112
1113         mutex_lock(&card->discipline_mutex);
1114         mutex_lock(&card->conf_mutex);
1115         QETH_DBF_TEXT(SETUP, 3, "setoffl");
1116         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1117
1118         if (card->dev && netif_carrier_ok(card->dev))
1119                 netif_carrier_off(card->dev);
1120         recover_flag = card->state;
1121         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1122                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1123                 card->info.hwtrap = 1;
1124         }
1125         qeth_l2_stop_card(card, recovery_mode);
1126         rc  = ccw_device_set_offline(CARD_DDEV(card));
1127         rc2 = ccw_device_set_offline(CARD_WDEV(card));
1128         rc3 = ccw_device_set_offline(CARD_RDEV(card));
1129         if (!rc)
1130                 rc = (rc2) ? rc2 : rc3;
1131         if (rc)
1132                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1133         qdio_free(CARD_DDEV(card));
1134         if (recover_flag == CARD_STATE_UP)
1135                 card->state = CARD_STATE_RECOVER;
1136         /* let user_space know that device is offline */
1137         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1138         mutex_unlock(&card->conf_mutex);
1139         mutex_unlock(&card->discipline_mutex);
1140         return 0;
1141 }
1142
1143 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1144 {
1145         return __qeth_l2_set_offline(cgdev, 0);
1146 }
1147
1148 static int qeth_l2_recover(void *ptr)
1149 {
1150         struct qeth_card *card;
1151         int rc = 0;
1152
1153         card = (struct qeth_card *) ptr;
1154         QETH_CARD_TEXT(card, 2, "recover1");
1155         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1156                 return 0;
1157         QETH_CARD_TEXT(card, 2, "recover2");
1158         dev_warn(&card->gdev->dev,
1159                 "A recovery process has been started for the device\n");
1160         qeth_set_recovery_task(card);
1161         __qeth_l2_set_offline(card->gdev, 1);
1162         rc = __qeth_l2_set_online(card->gdev, 1);
1163         if (!rc)
1164                 dev_info(&card->gdev->dev,
1165                         "Device successfully recovered!\n");
1166         else {
1167                 qeth_close_dev(card);
1168                 dev_warn(&card->gdev->dev, "The qeth device driver "
1169                                 "failed to recover an error on the device\n");
1170         }
1171         qeth_clear_recovery_task(card);
1172         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1173         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1174         return 0;
1175 }
1176
1177 static int __init qeth_l2_init(void)
1178 {
1179         pr_info("register layer 2 discipline\n");
1180         return 0;
1181 }
1182
1183 static void __exit qeth_l2_exit(void)
1184 {
1185         pr_info("unregister layer 2 discipline\n");
1186 }
1187
1188 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1189 {
1190         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1191         qeth_set_allowed_threads(card, 0, 1);
1192         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1193                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1194         qeth_qdio_clear_card(card, 0);
1195         qeth_clear_qdio_buffers(card);
1196         qdio_free(CARD_DDEV(card));
1197 }
1198
1199 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1200 {
1201         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1202
1203         if (card->dev)
1204                 netif_device_detach(card->dev);
1205         qeth_set_allowed_threads(card, 0, 1);
1206         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1207         if (gdev->state == CCWGROUP_OFFLINE)
1208                 return 0;
1209         if (card->state == CARD_STATE_UP) {
1210                 if (card->info.hwtrap)
1211                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1212                 __qeth_l2_set_offline(card->gdev, 1);
1213         } else
1214                 __qeth_l2_set_offline(card->gdev, 0);
1215         return 0;
1216 }
1217
1218 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1219 {
1220         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1221         int rc = 0;
1222
1223         if (gdev->state == CCWGROUP_OFFLINE)
1224                 goto out;
1225
1226         if (card->state == CARD_STATE_RECOVER) {
1227                 rc = __qeth_l2_set_online(card->gdev, 1);
1228                 if (rc) {
1229                         rtnl_lock();
1230                         dev_close(card->dev);
1231                         rtnl_unlock();
1232                 }
1233         } else
1234                 rc = __qeth_l2_set_online(card->gdev, 0);
1235 out:
1236         qeth_set_allowed_threads(card, 0xffffffff, 0);
1237         if (card->dev)
1238                 netif_device_attach(card->dev);
1239         if (rc)
1240                 dev_warn(&card->gdev->dev, "The qeth device driver "
1241                         "failed to recover an error on the device\n");
1242         return rc;
1243 }
1244
1245 /* Returns zero if the command is successfully "consumed" */
1246 static int qeth_l2_control_event(struct qeth_card *card,
1247                                         struct qeth_ipa_cmd *cmd)
1248 {
1249         switch (cmd->hdr.command) {
1250         case IPA_CMD_SETBRIDGEPORT:
1251                 if (cmd->data.sbp.hdr.command_code ==
1252                                 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1253                         qeth_bridge_state_change(card, cmd);
1254                         return 0;
1255                 } else
1256                         return 1;
1257         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1258                 qeth_bridge_host_event(card, cmd);
1259                 return 0;
1260         default:
1261                 return 1;
1262         }
1263 }
1264
1265 struct qeth_discipline qeth_l2_discipline = {
1266         .start_poll = qeth_qdio_start_poll,
1267         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1268         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1269         .recover = qeth_l2_recover,
1270         .setup = qeth_l2_probe_device,
1271         .remove = qeth_l2_remove_device,
1272         .set_online = qeth_l2_set_online,
1273         .set_offline = qeth_l2_set_offline,
1274         .shutdown = qeth_l2_shutdown,
1275         .freeze = qeth_l2_pm_suspend,
1276         .thaw = qeth_l2_pm_resume,
1277         .restore = qeth_l2_pm_resume,
1278         .control_event_handler = qeth_l2_control_event,
1279 };
1280 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1281
1282 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1283                            struct qeth_cmd_buffer *iob)
1284 {
1285         unsigned long flags;
1286         int rc = 0;
1287
1288         QETH_CARD_TEXT(card, 5, "osndctrd");
1289
1290         wait_event(card->wait_q,
1291                    atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1292         qeth_prepare_control_data(card, len, iob);
1293         QETH_CARD_TEXT(card, 6, "osnoirqp");
1294         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1295         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1296                               (addr_t) iob, 0, 0);
1297         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1298         if (rc) {
1299                 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1300                            "ccw_device_start rc = %i\n", rc);
1301                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1302                 qeth_release_buffer(iob->channel, iob);
1303                 atomic_set(&card->write.irq_pending, 0);
1304                 wake_up(&card->wait_q);
1305         }
1306         return rc;
1307 }
1308
1309 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1310                         struct qeth_cmd_buffer *iob, int data_len)
1311 {
1312         u16 s1, s2;
1313
1314         QETH_CARD_TEXT(card, 4, "osndipa");
1315
1316         qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1317         s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1318         s2 = (u16)data_len;
1319         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1320         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1321         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1322         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1323         return qeth_osn_send_control_data(card, s1, iob);
1324 }
1325
1326 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1327 {
1328         struct qeth_cmd_buffer *iob;
1329         struct qeth_card *card;
1330         int rc;
1331
1332         if (!dev)
1333                 return -ENODEV;
1334         card = dev->ml_priv;
1335         if (!card)
1336                 return -ENODEV;
1337         QETH_CARD_TEXT(card, 2, "osnsdmc");
1338         if (!qeth_card_hw_is_reachable(card))
1339                 return -ENODEV;
1340         iob = qeth_wait_for_buffer(&card->write);
1341         memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1342         rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1343         return rc;
1344 }
1345 EXPORT_SYMBOL(qeth_osn_assist);
1346
1347 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1348                   int (*assist_cb)(struct net_device *, void *),
1349                   int (*data_cb)(struct sk_buff *))
1350 {
1351         struct qeth_card *card;
1352
1353         *dev = qeth_l2_netdev_by_devno(read_dev_no);
1354         if (*dev == NULL)
1355                 return -ENODEV;
1356         card = (*dev)->ml_priv;
1357         if (!card)
1358                 return -ENODEV;
1359         QETH_CARD_TEXT(card, 2, "osnreg");
1360         if ((assist_cb == NULL) || (data_cb == NULL))
1361                 return -EINVAL;
1362         card->osn_info.assist_cb = assist_cb;
1363         card->osn_info.data_cb = data_cb;
1364         return 0;
1365 }
1366 EXPORT_SYMBOL(qeth_osn_register);
1367
1368 void qeth_osn_deregister(struct net_device *dev)
1369 {
1370         struct qeth_card *card;
1371
1372         if (!dev)
1373                 return;
1374         card = dev->ml_priv;
1375         if (!card)
1376                 return;
1377         QETH_CARD_TEXT(card, 2, "osndereg");
1378         card->osn_info.assist_cb = NULL;
1379         card->osn_info.data_cb = NULL;
1380         return;
1381 }
1382 EXPORT_SYMBOL(qeth_osn_deregister);
1383
1384 /* SETBRIDGEPORT support, async notifications */
1385
1386 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1387
1388 /**
1389  * qeth_bridge_emit_host_event() - bridgeport address change notification
1390  * @card:  qeth_card structure pointer, for udev events.
1391  * @evtype:  "normal" register/unregister, or abort, or reset. For abort
1392  *            and reset token and addr_lnid are unused and may be NULL.
1393  * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
1394  *                        object, 0 - addition of an object.
1395  *                        0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1396  * @token: "network token" structure identifying physical address of the port.
1397  * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1398  *
1399  * This function is called when registrations and deregistrations are
1400  * reported by the hardware, and also when notifications are enabled -
1401  * for all currently registered addresses.
1402  */
1403 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1404         enum qeth_an_event_type evtype,
1405         u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1406 {
1407         char str[7][32];
1408         char *env[8];
1409         int i = 0;
1410
1411         switch (evtype) {
1412         case anev_reg_unreg:
1413                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1414                                 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1415                                 ? "deregister" : "register");
1416                 env[i] = str[i]; i++;
1417                 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1418                         snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1419                                 addr_lnid->lnid);
1420                         env[i] = str[i]; i++;
1421                 }
1422                 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1423                         snprintf(str[i], sizeof(str[i]), "MAC=%pM6",
1424                                 &addr_lnid->mac);
1425                         env[i] = str[i]; i++;
1426                 }
1427                 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1428                         token->cssid, token->ssid, token->devnum);
1429                 env[i] = str[i]; i++;
1430                 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1431                 env[i] = str[i]; i++;
1432                 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1433                                 token->chpid);
1434                 env[i] = str[i]; i++;
1435                 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1436                 env[i] = str[i]; i++;
1437                 break;
1438         case anev_abort:
1439                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1440                 env[i] = str[i]; i++;
1441                 break;
1442         case anev_reset:
1443                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1444                 env[i] = str[i]; i++;
1445                 break;
1446         }
1447         env[i] = NULL;
1448         kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1449 }
1450
1451 struct qeth_bridge_state_data {
1452         struct work_struct worker;
1453         struct qeth_card *card;
1454         struct qeth_sbp_state_change qports;
1455 };
1456
1457 static void qeth_bridge_state_change_worker(struct work_struct *work)
1458 {
1459         struct qeth_bridge_state_data *data =
1460                 container_of(work, struct qeth_bridge_state_data, worker);
1461         /* We are only interested in the first entry - local port */
1462         struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1463         char env_locrem[32];
1464         char env_role[32];
1465         char env_state[32];
1466         char *env[] = {
1467                 env_locrem,
1468                 env_role,
1469                 env_state,
1470                 NULL
1471         };
1472
1473         /* Role should not change by itself, but if it did, */
1474         /* information from the hardware is authoritative.  */
1475         mutex_lock(&data->card->conf_mutex);
1476         data->card->options.sbp.role = entry->role;
1477         mutex_unlock(&data->card->conf_mutex);
1478
1479         snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1480         snprintf(env_role, sizeof(env_role), "ROLE=%s",
1481                 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1482                 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1483                 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1484                 "<INVALID>");
1485         snprintf(env_state, sizeof(env_state), "STATE=%s",
1486                 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1487                 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1488                 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1489                 "<INVALID>");
1490         kobject_uevent_env(&data->card->gdev->dev.kobj,
1491                                 KOBJ_CHANGE, env);
1492         kfree(data);
1493 }
1494
1495 static void qeth_bridge_state_change(struct qeth_card *card,
1496                                         struct qeth_ipa_cmd *cmd)
1497 {
1498         struct qeth_sbp_state_change *qports =
1499                  &cmd->data.sbp.data.state_change;
1500         struct qeth_bridge_state_data *data;
1501         int extrasize;
1502
1503         QETH_CARD_TEXT(card, 2, "brstchng");
1504         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1505                 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1506                 return;
1507         }
1508         extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1509         data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1510                 GFP_ATOMIC);
1511         if (!data) {
1512                 QETH_CARD_TEXT(card, 2, "BPSalloc");
1513                 return;
1514         }
1515         INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1516         data->card = card;
1517         memcpy(&data->qports, qports,
1518                         sizeof(struct qeth_sbp_state_change) + extrasize);
1519         queue_work(qeth_wq, &data->worker);
1520 }
1521
1522 struct qeth_bridge_host_data {
1523         struct work_struct worker;
1524         struct qeth_card *card;
1525         struct qeth_ipacmd_addr_change hostevs;
1526 };
1527
1528 static void qeth_bridge_host_event_worker(struct work_struct *work)
1529 {
1530         struct qeth_bridge_host_data *data =
1531                 container_of(work, struct qeth_bridge_host_data, worker);
1532         int i;
1533
1534         if (data->hostevs.lost_event_mask) {
1535                 dev_info(&data->card->gdev->dev,
1536 "Address notification from the HiperSockets Bridge Port stopped %s (%s)\n",
1537                         data->card->dev->name,
1538                         (data->hostevs.lost_event_mask == 0x01)
1539                         ? "Overflow"
1540                         : (data->hostevs.lost_event_mask == 0x02)
1541                         ? "Bridge port state change"
1542                         : "Unknown reason");
1543                 mutex_lock(&data->card->conf_mutex);
1544                 data->card->options.sbp.hostnotification = 0;
1545                 mutex_unlock(&data->card->conf_mutex);
1546                 qeth_bridge_emit_host_event(data->card, anev_abort,
1547                         0, NULL, NULL);
1548         } else
1549                 for (i = 0; i < data->hostevs.num_entries; i++) {
1550                         struct qeth_ipacmd_addr_change_entry *entry =
1551                                         &data->hostevs.entry[i];
1552                         qeth_bridge_emit_host_event(data->card,
1553                                         anev_reg_unreg,
1554                                         entry->change_code,
1555                                         &entry->token, &entry->addr_lnid);
1556                 }
1557         kfree(data);
1558 }
1559
1560 static void qeth_bridge_host_event(struct qeth_card *card,
1561                                         struct qeth_ipa_cmd *cmd)
1562 {
1563         struct qeth_ipacmd_addr_change *hostevs =
1564                  &cmd->data.addrchange;
1565         struct qeth_bridge_host_data *data;
1566         int extrasize;
1567
1568         QETH_CARD_TEXT(card, 2, "brhostev");
1569         if (cmd->hdr.return_code != 0x0000) {
1570                 if (cmd->hdr.return_code == 0x0010) {
1571                         if (hostevs->lost_event_mask == 0x00)
1572                                 hostevs->lost_event_mask = 0xff;
1573                 } else {
1574                         QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1575                                 cmd->hdr.return_code);
1576                         return;
1577                 }
1578         }
1579         extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1580                                                 hostevs->num_entries;
1581         data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1582                 GFP_ATOMIC);
1583         if (!data) {
1584                 QETH_CARD_TEXT(card, 2, "BPHalloc");
1585                 return;
1586         }
1587         INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1588         data->card = card;
1589         memcpy(&data->hostevs, hostevs,
1590                         sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1591         queue_work(qeth_wq, &data->worker);
1592 }
1593
1594 /* SETBRIDGEPORT support; sending commands */
1595
1596 struct _qeth_sbp_cbctl {
1597         u16 ipa_rc;
1598         u16 cmd_rc;
1599         union {
1600                 u32 supported;
1601                 struct {
1602                         enum qeth_sbp_roles *role;
1603                         enum qeth_sbp_states *state;
1604                 } qports;
1605         } data;
1606 };
1607
1608 /**
1609  * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1610  * @card:                     qeth_card structure pointer, for debug messages.
1611  * @cbctl:                    state structure with hardware return codes.
1612  * @setcmd:                   IPA command code
1613  *
1614  * Returns negative errno-compatible error indication or 0 on success.
1615  */
1616 static int qeth_bridgeport_makerc(struct qeth_card *card,
1617         struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1618 {
1619         int rc;
1620
1621         switch (cbctl->ipa_rc) {
1622         case IPA_RC_SUCCESS:
1623                 switch (cbctl->cmd_rc) {
1624                 case 0x0000:
1625                         rc = 0;
1626                         break;
1627                 case 0x0004:
1628                         rc = -ENOSYS;
1629                         break;
1630                 case 0x000C: /* Not configured as bridge Port */
1631                         rc = -ENODEV; /* maybe not the best code here? */
1632                         dev_err(&card->gdev->dev,
1633         "The HiperSockets device is not configured as a Bridge Port\n");
1634                         break;
1635                 case 0x0014: /* Another device is Primary */
1636                         switch (setcmd) {
1637                         case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1638                                 rc = -EEXIST;
1639                                 dev_err(&card->gdev->dev,
1640         "The HiperSockets LAN already has a primary Bridge Port\n");
1641                                 break;
1642                         case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1643                                 rc = -EBUSY;
1644                                 dev_err(&card->gdev->dev,
1645         "The HiperSockets device is already a primary Bridge Port\n");
1646                                 break;
1647                         default:
1648                                 rc = -EIO;
1649                         }
1650                         break;
1651                 case 0x0018: /* This device is currently Secondary */
1652                         rc = -EBUSY;
1653                         dev_err(&card->gdev->dev,
1654         "The HiperSockets device is already a secondary Bridge Port\n");
1655                         break;
1656                 case 0x001C: /* Limit for Secondary devices reached */
1657                         rc = -EEXIST;
1658                         dev_err(&card->gdev->dev,
1659         "The HiperSockets LAN cannot have more secondary Bridge Ports\n");
1660                         break;
1661                 case 0x0024: /* This device is currently Primary */
1662                         rc = -EBUSY;
1663                         dev_err(&card->gdev->dev,
1664         "The HiperSockets device is already a primary Bridge Port\n");
1665                         break;
1666                 case 0x0020: /* Not authorized by zManager */
1667                         rc = -EACCES;
1668                         dev_err(&card->gdev->dev,
1669         "The HiperSockets device is not authorized to be a Bridge Port\n");
1670                         break;
1671                 default:
1672                         rc = -EIO;
1673                 }
1674                 break;
1675         case IPA_RC_NOTSUPP:
1676                 rc = -ENOSYS;
1677                 break;
1678         case IPA_RC_UNSUPPORTED_COMMAND:
1679                 rc = -ENOSYS;
1680                 break;
1681         default:
1682                 rc = -EIO;
1683         }
1684         if (rc) {
1685                 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1686                 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1687         }
1688         return rc;
1689 }
1690
1691 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1692         struct qeth_reply *reply, unsigned long data)
1693 {
1694         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1695         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1696         QETH_CARD_TEXT(card, 2, "brqsupcb");
1697         cbctl->ipa_rc = cmd->hdr.return_code;
1698         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1699         if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1700                 cbctl->data.supported =
1701                         cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1702         } else {
1703                 cbctl->data.supported = 0;
1704         }
1705         return 0;
1706 }
1707
1708 /**
1709  * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1710  * @card:                            qeth_card structure pointer.
1711  *
1712  * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1713  * strucutre: card->options.sbp.supported_funcs.
1714  */
1715 static void qeth_bridgeport_query_support(struct qeth_card *card)
1716 {
1717         struct qeth_cmd_buffer *iob;
1718         struct qeth_ipa_cmd *cmd;
1719         struct _qeth_sbp_cbctl cbctl;
1720
1721         QETH_CARD_TEXT(card, 2, "brqsuppo");
1722         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1723         if (!iob)
1724                 return;
1725         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1726         cmd->data.sbp.hdr.cmdlength =
1727                 sizeof(struct qeth_ipacmd_sbp_hdr) +
1728                 sizeof(struct qeth_sbp_query_cmds_supp);
1729         cmd->data.sbp.hdr.command_code =
1730                 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1731         cmd->data.sbp.hdr.used_total = 1;
1732         cmd->data.sbp.hdr.seq_no = 1;
1733         if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1734                                                         (void *)&cbctl) ||
1735             qeth_bridgeport_makerc(card, &cbctl,
1736                                         IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1737                 /* non-zero makerc signifies failure, and produce messages */
1738                 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1739                 return;
1740         }
1741         card->options.sbp.supported_funcs = cbctl.data.supported;
1742 }
1743
1744 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1745         struct qeth_reply *reply, unsigned long data)
1746 {
1747         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1748         struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1749         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1750
1751         QETH_CARD_TEXT(card, 2, "brqprtcb");
1752         cbctl->ipa_rc = cmd->hdr.return_code;
1753         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1754         if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1755                 return 0;
1756         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1757                 cbctl->cmd_rc = 0xffff;
1758                 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1759                 return 0;
1760         }
1761         /* first entry contains the state of the local port */
1762         if (qports->num_entries > 0) {
1763                 if (cbctl->data.qports.role)
1764                         *cbctl->data.qports.role = qports->entry[0].role;
1765                 if (cbctl->data.qports.state)
1766                         *cbctl->data.qports.state = qports->entry[0].state;
1767         }
1768         return 0;
1769 }
1770
1771 /**
1772  * qeth_bridgeport_query_ports() - query local bridgeport status.
1773  * @card:                          qeth_card structure pointer.
1774  * @role:   Role of the port: 0-none, 1-primary, 2-secondary.
1775  * @state:  State of the port: 0-inactive, 1-standby, 2-active.
1776  *
1777  * Returns negative errno-compatible error indication or 0 on success.
1778  *
1779  * 'role' and 'state' are not updated in case of hardware operation failure.
1780  */
1781 int qeth_bridgeport_query_ports(struct qeth_card *card,
1782         enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1783 {
1784         int rc = 0;
1785         struct qeth_cmd_buffer *iob;
1786         struct qeth_ipa_cmd *cmd;
1787         struct _qeth_sbp_cbctl cbctl = {
1788                 .data = {
1789                         .qports = {
1790                                 .role = role,
1791                                 .state = state,
1792                         },
1793                 },
1794         };
1795
1796         QETH_CARD_TEXT(card, 2, "brqports");
1797         if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1798                 return -EOPNOTSUPP;
1799         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1800         if (!iob)
1801                 return -ENOMEM;
1802         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1803         cmd->data.sbp.hdr.cmdlength =
1804                 sizeof(struct qeth_ipacmd_sbp_hdr);
1805         cmd->data.sbp.hdr.command_code =
1806                 IPA_SBP_QUERY_BRIDGE_PORTS;
1807         cmd->data.sbp.hdr.used_total = 1;
1808         cmd->data.sbp.hdr.seq_no = 1;
1809         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1810                                 (void *)&cbctl);
1811         if (rc)
1812                 return rc;
1813         rc = qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1814         return rc;
1815 }
1816 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1817
1818 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1819         struct qeth_reply *reply, unsigned long data)
1820 {
1821         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1822         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1823         QETH_CARD_TEXT(card, 2, "brsetrcb");
1824         cbctl->ipa_rc = cmd->hdr.return_code;
1825         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1826         return 0;
1827 }
1828
1829 /**
1830  * qeth_bridgeport_setrole() - Assign primary role to the port.
1831  * @card:                      qeth_card structure pointer.
1832  * @role:                      Role to assign.
1833  *
1834  * Returns negative errno-compatible error indication or 0 on success.
1835  */
1836 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1837 {
1838         int rc = 0;
1839         int cmdlength;
1840         struct qeth_cmd_buffer *iob;
1841         struct qeth_ipa_cmd *cmd;
1842         struct _qeth_sbp_cbctl cbctl;
1843         enum qeth_ipa_sbp_cmd setcmd;
1844
1845         QETH_CARD_TEXT(card, 2, "brsetrol");
1846         switch (role) {
1847         case QETH_SBP_ROLE_NONE:
1848                 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1849                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1850                         sizeof(struct qeth_sbp_reset_role);
1851                 break;
1852         case QETH_SBP_ROLE_PRIMARY:
1853                 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1854                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1855                         sizeof(struct qeth_sbp_set_primary);
1856                 break;
1857         case QETH_SBP_ROLE_SECONDARY:
1858                 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1859                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1860                         sizeof(struct qeth_sbp_set_secondary);
1861                 break;
1862         default:
1863                 return -EINVAL;
1864         }
1865         if (!(card->options.sbp.supported_funcs & setcmd))
1866                 return -EOPNOTSUPP;
1867         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1868         if (!iob)
1869                 return -ENOMEM;
1870         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1871         cmd->data.sbp.hdr.cmdlength = cmdlength;
1872         cmd->data.sbp.hdr.command_code = setcmd;
1873         cmd->data.sbp.hdr.used_total = 1;
1874         cmd->data.sbp.hdr.seq_no = 1;
1875         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1876                                 (void *)&cbctl);
1877         if (rc)
1878                 return rc;
1879         rc = qeth_bridgeport_makerc(card, &cbctl, setcmd);
1880         return rc;
1881 }
1882
1883 /**
1884  * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1885  * @card:                     qeth_card structure pointer, for debug messages.
1886  *
1887  * Returns negative errno-compatible error indication or 0 on success.
1888  */
1889 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1890 {
1891         int rc;
1892
1893         if (pnso_rc == 0)
1894                 switch (response) {
1895                 case 0x0001:
1896                         rc = 0;
1897                         break;
1898                 case 0x0004:
1899                 case 0x0100:
1900                 case 0x0106:
1901                         rc = -ENOSYS;
1902                         dev_err(&card->gdev->dev,
1903                                 "Setting address notification failed\n");
1904                         break;
1905                 case 0x0107:
1906                         rc = -EAGAIN;
1907                         break;
1908                 default:
1909                         rc = -EIO;
1910                 }
1911         else
1912                 rc = -EIO;
1913
1914         if (rc) {
1915                 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1916                 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1917         }
1918         return rc;
1919 }
1920
1921 static void qeth_bridgeport_an_set_cb(void *priv,
1922                 enum qdio_brinfo_entry_type type, void *entry)
1923 {
1924         struct qeth_card *card = (struct qeth_card *)priv;
1925         struct qdio_brinfo_entry_l2 *l2entry;
1926         u8 code;
1927
1928         if (type != l2_addr_lnid) {
1929                 WARN_ON_ONCE(1);
1930                 return;
1931         }
1932
1933         l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1934         code = IPA_ADDR_CHANGE_CODE_MACADDR;
1935         if (l2entry->addr_lnid.lnid)
1936                 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1937         qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1938                 (struct net_if_token *)&l2entry->nit,
1939                 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1940 }
1941
1942 /**
1943  * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1944  * @card:                     qeth_card structure pointer.
1945  * @enable:                   0 - disable, non-zero - enable notifications
1946  *
1947  * Returns negative errno-compatible error indication or 0 on success.
1948  *
1949  * On enable, emits a series of address notifications udev events for all
1950  * currently registered hosts.
1951  */
1952 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1953 {
1954         int rc;
1955         u16 response;
1956         struct ccw_device *ddev;
1957         struct subchannel_id schid;
1958
1959         if (!card)
1960                 return -EINVAL;
1961         if (!card->options.sbp.supported_funcs)
1962                 return -EOPNOTSUPP;
1963         ddev = CARD_DDEV(card);
1964         ccw_device_get_schid(ddev, &schid);
1965
1966         if (enable) {
1967                 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1968                 rc = qdio_pnso_brinfo(schid, 1, &response,
1969                         qeth_bridgeport_an_set_cb, card);
1970         } else
1971                 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
1972         return qeth_anset_makerc(card, rc, response);
1973 }
1974 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
1975
1976 module_init(qeth_l2_init);
1977 module_exit(qeth_l2_exit);
1978 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1979 MODULE_DESCRIPTION("qeth layer 2 discipline");
1980 MODULE_LICENSE("GPL");