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                            int (*reply_cb) (struct qeth_card *,
  32                                             struct qeth_reply*,
  33                                             unsigned long));
  34 static void qeth_l2_set_multicast_list(struct net_device *);
  35 static int qeth_l2_recover(void *);
  36 static void qeth_bridgeport_query_support(struct qeth_card *card);
  37 static void qeth_bridge_state_change(struct qeth_card *card,
  38                                         struct qeth_ipa_cmd *cmd);
  39 static void qeth_bridge_host_event(struct qeth_card *card,
  40                                         struct qeth_ipa_cmd *cmd);
  41
  42 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
  43 {
  44         struct qeth_card *card = dev->ml_priv;
  45         struct mii_ioctl_data *mii_data;
  46         int rc = 0;
  47
  48         if (!card)
  49                 return -ENODEV;
  50
  51         if ((card->state != CARD_STATE_UP) &&
  52                 (card->state != CARD_STATE_SOFTSETUP))
  53                 return -ENODEV;
  54
  55         if (card->info.type == QETH_CARD_TYPE_OSN)
  56                 return -EPERM;
  57
  58         switch (cmd) {
  59         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
  60                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
  61                 break;
  62         case SIOC_QETH_GET_CARD_TYPE:
  63                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
  64                      card->info.type == QETH_CARD_TYPE_OSM ||
  65                      card->info.type == QETH_CARD_TYPE_OSX) &&
  66                     !card->info.guestlan)
  67                         return 1;
  68                 return 0;
  69                 break;
  70         case SIOCGMIIPHY:
  71                 mii_data = if_mii(rq);
  72                 mii_data->phy_id = 0;
  73                 break;
  74         case SIOCGMIIREG:
  75                 mii_data = if_mii(rq);
  76                 if (mii_data->phy_id != 0)
  77                         rc = -EINVAL;
  78                 else
  79                         mii_data->val_out = qeth_mdio_read(dev,
  80                                 mii_data->phy_id, mii_data->reg_num);
  81                 break;
  82         case SIOC_QETH_QUERY_OAT:
  83                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
  84                 break;
  85         default:
  86                 rc = -EOPNOTSUPP;
  87         }
  88         if (rc)
  89                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
  90         return rc;
  91 }
  92
  93 static int qeth_l2_verify_dev(struct net_device *dev)
  94 {
  95         struct qeth_card *card;
  96         unsigned long flags;
  97         int rc = 0;
  98
  99         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
 100         list_for_each_entry(card, &qeth_core_card_list.list, list) {
 101                 if (card->dev == dev) {
 102                         rc = QETH_REAL_CARD;
 103                         break;
 104                 }
 105         }
 106         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
 107
 108         return rc;
 109 }
 110
 111 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
 112 {
 113         struct qeth_card *card;
 114         struct net_device *ndev;
 115         __u16 temp_dev_no;
 116         unsigned long flags;
 117         struct ccw_dev_id read_devid;
 118
 119         ndev = NULL;
 120         memcpy(&temp_dev_no, read_dev_no, 2);
 121         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
 122         list_for_each_entry(card, &qeth_core_card_list.list, list) {
 123                 ccw_device_get_id(CARD_RDEV(card), &read_devid);
 124                 if (read_devid.devno == temp_dev_no) {
 125                         ndev = card->dev;
 126                         break;
 127                 }
 128         }
 129         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
 130         return ndev;
 131 }
 132
 133 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
 134                                 struct qeth_reply *reply,
 135                                 unsigned long data)
 136 {
 137         struct qeth_ipa_cmd *cmd;
 138         __u8 *mac;
 139
 140         QETH_CARD_TEXT(card, 2, "L2Sgmacb");
 141         cmd = (struct qeth_ipa_cmd *) data;
 142         mac = &cmd->data.setdelmac.mac[0];
 143         /* MAC already registered, needed in couple/uncouple case */
 144         if (cmd->hdr.return_code ==  IPA_RC_L2_DUP_MAC) {
 145                 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
 146                           mac, QETH_CARD_IFNAME(card));
 147                 cmd->hdr.return_code = 0;
 148         }
 149         if (cmd->hdr.return_code)
 150                 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
 151                           mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 152         return 0;
 153 }
 154
 155 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
 156 {
 157         QETH_CARD_TEXT(card, 2, "L2Sgmac");
 158         return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
 159                                           qeth_l2_send_setgroupmac_cb);
 160 }
 161
 162 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
 163                                 struct qeth_reply *reply,
 164                                 unsigned long data)
 165 {
 166         struct qeth_ipa_cmd *cmd;
 167         __u8 *mac;
 168
 169         QETH_CARD_TEXT(card, 2, "L2Dgmacb");
 170         cmd = (struct qeth_ipa_cmd *) data;
 171         mac = &cmd->data.setdelmac.mac[0];
 172         if (cmd->hdr.return_code)
 173                 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
 174                           mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 175         return 0;
 176 }
 177
 178 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
 179 {
 180         QETH_CARD_TEXT(card, 2, "L2Dgmac");
 181         return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
 182                                           qeth_l2_send_delgroupmac_cb);
 183 }
 184
 185 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
 186 {
 187         struct qeth_mc_mac *mc;
 188         int rc;
 189
 190         mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
 191
 192         if (!mc)
 193                 return;
 194
 195         memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
 196         mc->mc_addrlen = OSA_ADDR_LEN;
 197         mc->is_vmac = vmac;
 198
 199         if (vmac) {
 200                 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
 201                                         NULL);
 202         } else {
 203                 rc = qeth_l2_send_setgroupmac(card, mac);
 204         }
 205
 206         if (!rc)
 207                 list_add_tail(&mc->list, &card->mc_list);
 208         else
 209                 kfree(mc);
 210 }
 211
 212 static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
 213 {
 214         struct qeth_mc_mac *mc, *tmp;
 215
 216         spin_lock_bh(&card->mclock);
 217         list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
 218                 if (del) {
 219                         if (mc->is_vmac)
 220                                 qeth_l2_send_setdelmac(card, mc->mc_addr,
 221                                         IPA_CMD_DELVMAC, NULL);
 222                         else
 223                                 qeth_l2_send_delgroupmac(card, mc->mc_addr);
 224                 }
 225                 list_del(&mc->list);
 226                 kfree(mc);
 227         }
 228         spin_unlock_bh(&card->mclock);
 229 }
 230
 231 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
 232                         struct sk_buff *skb)
 233 {
 234         if (card->info.type == QETH_CARD_TYPE_OSN)
 235                 return RTN_UNSPEC;
 236         if (is_broadcast_ether_addr(skb->data))
 237                 return RTN_BROADCAST;
 238         if (is_multicast_ether_addr(skb->data))
 239                 return RTN_MULTICAST;
 240         return RTN_UNSPEC;
 241 }
 242
 243 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
 244                         struct sk_buff *skb, int cast_type)
 245 {
 246         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
 247
 248         memset(hdr, 0, sizeof(struct qeth_hdr));
 249         hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
 250
 251         /* set byte byte 3 to casting flags */
 252         if (cast_type == RTN_MULTICAST)
 253                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 254         else if (cast_type == RTN_BROADCAST)
 255                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
 256         else
 257                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 258
 259         hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
 260         /* VSWITCH relies on the VLAN
 261          * information to be present in
 262          * the QDIO header */
 263         if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
 264                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
 265                 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
 266         }
 267 }
 268
 269 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
 270                         struct qeth_reply *reply, unsigned long data)
 271 {
 272         struct qeth_ipa_cmd *cmd;
 273
 274         QETH_CARD_TEXT(card, 2, "L2sdvcb");
 275         cmd = (struct qeth_ipa_cmd *) data;
 276         if (cmd->hdr.return_code) {
 277                 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
 278                           "Continuing\n", cmd->data.setdelvlan.vlan_id,
 279                           QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 280                 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
 281                 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
 282         }
 283         return 0;
 284 }
 285
 286 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
 287                                 enum qeth_ipa_cmds ipacmd)
 288 {
 289         struct qeth_ipa_cmd *cmd;
 290         struct qeth_cmd_buffer *iob;
 291
 292         QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
 293         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 294         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 295         cmd->data.setdelvlan.vlan_id = i;
 296         return qeth_send_ipa_cmd(card, iob,
 297                                  qeth_l2_send_setdelvlan_cb, NULL);
 298 }
 299
 300 static void qeth_l2_process_vlans(struct qeth_card *card)
 301 {
 302         struct qeth_vlan_vid *id;
 303         QETH_CARD_TEXT(card, 3, "L2prcvln");
 304         spin_lock_bh(&card->vlanlock);
 305         list_for_each_entry(id, &card->vid_list, list) {
 306                 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
 307         }
 308         spin_unlock_bh(&card->vlanlock);
 309 }
 310
 311 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
 312                                    __be16 proto, u16 vid)
 313 {
 314         struct qeth_card *card = dev->ml_priv;
 315         struct qeth_vlan_vid *id;
 316
 317         QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
 318         if (!vid)
 319                 return 0;
 320         if (card->info.type == QETH_CARD_TYPE_OSM) {
 321                 QETH_CARD_TEXT(card, 3, "aidOSM");
 322                 return 0;
 323         }
 324         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 325                 QETH_CARD_TEXT(card, 3, "aidREC");
 326                 return 0;
 327         }
 328         id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
 329         if (id) {
 330                 id->vid = vid;
 331                 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
 332                 spin_lock_bh(&card->vlanlock);
 333                 list_add_tail(&id->list, &card->vid_list);
 334                 spin_unlock_bh(&card->vlanlock);
 335         } else {
 336                 return -ENOMEM;
 337         }
 338         return 0;
 339 }
 340
 341 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
 342                                     __be16 proto, u16 vid)
 343 {
 344         struct qeth_vlan_vid *id, *tmpid = NULL;
 345         struct qeth_card *card = dev->ml_priv;
 346
 347         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
 348         if (card->info.type == QETH_CARD_TYPE_OSM) {
 349                 QETH_CARD_TEXT(card, 3, "kidOSM");
 350                 return 0;
 351         }
 352         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 353                 QETH_CARD_TEXT(card, 3, "kidREC");
 354                 return 0;
 355         }
 356         spin_lock_bh(&card->vlanlock);
 357         list_for_each_entry(id, &card->vid_list, list) {
 358                 if (id->vid == vid) {
 359                         list_del(&id->list);
 360                         tmpid = id;
 361                         break;
 362                 }
 363         }
 364         spin_unlock_bh(&card->vlanlock);
 365         if (tmpid) {
 366                 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
 367                 kfree(tmpid);
 368         }
 369         qeth_l2_set_multicast_list(card->dev);
 370         return 0;
 371 }
 372
 373 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
 374 {
 375         int rc = 0;
 376
 377         QETH_DBF_TEXT(SETUP , 2, "stopcard");
 378         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 379
 380         qeth_set_allowed_threads(card, 0, 1);
 381         if (card->read.state == CH_STATE_UP &&
 382             card->write.state == CH_STATE_UP &&
 383             (card->state == CARD_STATE_UP)) {
 384                 if (recovery_mode &&
 385                     card->info.type != QETH_CARD_TYPE_OSN) {
 386                         qeth_l2_stop(card->dev);
 387                 } else {
 388                         rtnl_lock();
 389                         dev_close(card->dev);
 390                         rtnl_unlock();
 391                 }
 392                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 393                 card->state = CARD_STATE_SOFTSETUP;
 394         }
 395         if (card->state == CARD_STATE_SOFTSETUP) {
 396                 qeth_l2_del_all_mc(card, 0);
 397                 qeth_clear_ipacmd_list(card);
 398                 card->state = CARD_STATE_HARDSETUP;
 399         }
 400         if (card->state == CARD_STATE_HARDSETUP) {
 401                 qeth_qdio_clear_card(card, 0);
 402                 qeth_clear_qdio_buffers(card);
 403                 qeth_clear_working_pool_list(card);
 404                 card->state = CARD_STATE_DOWN;
 405         }
 406         if (card->state == CARD_STATE_DOWN) {
 407                 qeth_clear_cmd_buffers(&card->read);
 408                 qeth_clear_cmd_buffers(&card->write);
 409         }
 410         return rc;
 411 }
 412
 413 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
 414                                 int budget, int *done)
 415 {
 416         int work_done = 0;
 417         struct sk_buff *skb;
 418         struct qeth_hdr *hdr;
 419         unsigned int len;
 420
 421         *done = 0;
 422         WARN_ON_ONCE(!budget);
 423         while (budget) {
 424                 skb = qeth_core_get_next_skb(card,
 425                         &card->qdio.in_q->bufs[card->rx.b_index],
 426                         &card->rx.b_element, &card->rx.e_offset, &hdr);
 427                 if (!skb) {
 428                         *done = 1;
 429                         break;
 430                 }
 431                 skb->dev = card->dev;
 432                 switch (hdr->hdr.l2.id) {
 433                 case QETH_HEADER_TYPE_LAYER2:
 434                         skb->pkt_type = PACKET_HOST;
 435                         skb->protocol = eth_type_trans(skb, skb->dev);
 436                         skb->ip_summed = CHECKSUM_NONE;
 437                         if (skb->protocol == htons(ETH_P_802_2))
 438                                 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
 439                         len = skb->len;
 440                         netif_receive_skb(skb);
 441                         break;
 442                 case QETH_HEADER_TYPE_OSN:
 443                         if (card->info.type == QETH_CARD_TYPE_OSN) {
 444                                 skb_push(skb, sizeof(struct qeth_hdr));
 445                                 skb_copy_to_linear_data(skb, hdr,
 446                                                 sizeof(struct qeth_hdr));
 447                                 len = skb->len;
 448                                 card->osn_info.data_cb(skb);
 449                                 break;
 450                         }
 451                         /* else unknown */
 452                 default:
 453                         dev_kfree_skb_any(skb);
 454                         QETH_CARD_TEXT(card, 3, "inbunkno");
 455                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
 456                         continue;
 457                 }
 458                 work_done++;
 459                 budget--;
 460                 card->stats.rx_packets++;
 461                 card->stats.rx_bytes += len;
 462         }
 463         return work_done;
 464 }
 465
 466 static int qeth_l2_poll(struct napi_struct *napi, int budget)
 467 {
 468         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
 469         int work_done = 0;
 470         struct qeth_qdio_buffer *buffer;
 471         int done;
 472         int new_budget = budget;
 473
 474         if (card->options.performance_stats) {
 475                 card->perf_stats.inbound_cnt++;
 476                 card->perf_stats.inbound_start_time = qeth_get_micros();
 477         }
 478
 479         while (1) {
 480                 if (!card->rx.b_count) {
 481                         card->rx.qdio_err = 0;
 482                         card->rx.b_count = qdio_get_next_buffers(
 483                                 card->data.ccwdev, 0, &card->rx.b_index,
 484                                 &card->rx.qdio_err);
 485                         if (card->rx.b_count <= 0) {
 486                                 card->rx.b_count = 0;
 487                                 break;
 488                         }
 489                         card->rx.b_element =
 490                                 &card->qdio.in_q->bufs[card->rx.b_index]
 491                                 .buffer->element[0];
 492                         card->rx.e_offset = 0;
 493                 }
 494
 495                 while (card->rx.b_count) {
 496                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
 497                         if (!(card->rx.qdio_err &&
 498                             qeth_check_qdio_errors(card, buffer->buffer,
 499                             card->rx.qdio_err, "qinerr")))
 500                                 work_done += qeth_l2_process_inbound_buffer(
 501                                         card, new_budget, &done);
 502                         else
 503                                 done = 1;
 504
 505                         if (done) {
 506                                 if (card->options.performance_stats)
 507                                         card->perf_stats.bufs_rec++;
 508                                 qeth_put_buffer_pool_entry(card,
 509                                         buffer->pool_entry);
 510                                 qeth_queue_input_buffer(card, card->rx.b_index);
 511                                 card->rx.b_count--;
 512                                 if (card->rx.b_count) {
 513                                         card->rx.b_index =
 514                                                 (card->rx.b_index + 1) %
 515                                                 QDIO_MAX_BUFFERS_PER_Q;
 516                                         card->rx.b_element =
 517                                                 &card->qdio.in_q
 518                                                 ->bufs[card->rx.b_index]
 519                                                 .buffer->element[0];
 520                                         card->rx.e_offset = 0;
 521                                 }
 522                         }
 523
 524                         if (work_done >= budget)
 525                                 goto out;
 526                         else
 527                                 new_budget = budget - work_done;
 528                 }
 529         }
 530
 531         napi_complete(napi);
 532         if (qdio_start_irq(card->data.ccwdev, 0))
 533                 napi_schedule(&card->napi);
 534 out:
 535         if (card->options.performance_stats)
 536                 card->perf_stats.inbound_time += qeth_get_micros() -
 537                         card->perf_stats.inbound_start_time;
 538         return work_done;
 539 }
 540
 541 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
 542                            enum qeth_ipa_cmds ipacmd,
 543                            int (*reply_cb) (struct qeth_card *,
 544                                             struct qeth_reply*,
 545                                             unsigned long))
 546 {
 547         struct qeth_ipa_cmd *cmd;
 548         struct qeth_cmd_buffer *iob;
 549
 550         QETH_CARD_TEXT(card, 2, "L2sdmac");
 551         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 552         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 553         cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
 554         memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
 555         return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
 556 }
 557
 558 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
 559                            struct qeth_reply *reply,
 560                            unsigned long data)
 561 {
 562         struct qeth_ipa_cmd *cmd;
 563
 564         QETH_CARD_TEXT(card, 2, "L2Smaccb");
 565         cmd = (struct qeth_ipa_cmd *) data;
 566         if (cmd->hdr.return_code) {
 567                 QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code);
 568                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 569                 switch (cmd->hdr.return_code) {
 570                 case IPA_RC_L2_DUP_MAC:
 571                 case IPA_RC_L2_DUP_LAYER3_MAC:
 572                         dev_warn(&card->gdev->dev,
 573                                 "MAC address %pM already exists\n",
 574                                 cmd->data.setdelmac.mac);
 575                         break;
 576                 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
 577                 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
 578                         dev_warn(&card->gdev->dev,
 579                                 "MAC address %pM is not authorized\n",
 580                                 cmd->data.setdelmac.mac);
 581                         break;
 582                 default:
 583                         break;
 584                 }
 585         } else {
 586                 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 587                 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
 588                        OSA_ADDR_LEN);
 589                 dev_info(&card->gdev->dev,
 590                         "MAC address %pM successfully registered on device %s\n",
 591                         card->dev->dev_addr, card->dev->name);
 592         }
 593         return 0;
 594 }
 595
 596 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
 597 {
 598         QETH_CARD_TEXT(card, 2, "L2Setmac");
 599         return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
 600                                           qeth_l2_send_setmac_cb);
 601 }
 602
 603 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
 604                            struct qeth_reply *reply,
 605                            unsigned long data)
 606 {
 607         struct qeth_ipa_cmd *cmd;
 608
 609         QETH_CARD_TEXT(card, 2, "L2Dmaccb");
 610         cmd = (struct qeth_ipa_cmd *) data;
 611         if (cmd->hdr.return_code) {
 612                 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
 613                 return 0;
 614         }
 615         card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 616
 617         return 0;
 618 }
 619
 620 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
 621 {
 622         QETH_CARD_TEXT(card, 2, "L2Delmac");
 623         if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
 624                 return 0;
 625         return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
 626                                           qeth_l2_send_delmac_cb);
 627 }
 628
 629 static int qeth_l2_request_initial_mac(struct qeth_card *card)
 630 {
 631         int rc = 0;
 632         char vendor_pre[] = {0x02, 0x00, 0x00};
 633
 634         QETH_DBF_TEXT(SETUP, 2, "doL2init");
 635         QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
 636
 637         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 638                 rc = qeth_query_setadapterparms(card);
 639                 if (rc) {
 640                         QETH_DBF_MESSAGE(2, "could not query adapter "
 641                                 "parameters on device %s: x%x\n",
 642                                 CARD_BUS_ID(card), rc);
 643                 }
 644         }
 645
 646         if (card->info.type == QETH_CARD_TYPE_IQD ||
 647             card->info.type == QETH_CARD_TYPE_OSM ||
 648             card->info.type == QETH_CARD_TYPE_OSX ||
 649             card->info.guestlan) {
 650                 rc = qeth_setadpparms_change_macaddr(card);
 651                 if (rc) {
 652                         QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
 653                                 "device %s: x%x\n", CARD_BUS_ID(card), rc);
 654                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 655                         return rc;
 656                 }
 657                 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
 658         } else {
 659                 eth_random_addr(card->dev->dev_addr);
 660                 memcpy(card->dev->dev_addr, vendor_pre, 3);
 661         }
 662         return 0;
 663 }
 664
 665 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
 666 {
 667         struct sockaddr *addr = p;
 668         struct qeth_card *card = dev->ml_priv;
 669         int rc = 0;
 670
 671         QETH_CARD_TEXT(card, 3, "setmac");
 672
 673         if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
 674                 QETH_CARD_TEXT(card, 3, "setmcINV");
 675                 return -EOPNOTSUPP;
 676         }
 677
 678         if (card->info.type == QETH_CARD_TYPE_OSN ||
 679             card->info.type == QETH_CARD_TYPE_OSM ||
 680             card->info.type == QETH_CARD_TYPE_OSX) {
 681                 QETH_CARD_TEXT(card, 3, "setmcTYP");
 682                 return -EOPNOTSUPP;
 683         }
 684         QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
 685         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 686                 QETH_CARD_TEXT(card, 3, "setmcREC");
 687                 return -ERESTARTSYS;
 688         }
 689         rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
 690         if (!rc || (rc == IPA_RC_L2_MAC_NOT_FOUND))
 691                 rc = qeth_l2_send_setmac(card, addr->sa_data);
 692         return rc ? -EINVAL : 0;
 693 }
 694
 695 static void qeth_l2_set_multicast_list(struct net_device *dev)
 696 {
 697         struct qeth_card *card = dev->ml_priv;
 698         struct netdev_hw_addr *ha;
 699
 700         if (card->info.type == QETH_CARD_TYPE_OSN)
 701                 return ;
 702
 703         QETH_CARD_TEXT(card, 3, "setmulti");
 704         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
 705             (card->state != CARD_STATE_UP))
 706                 return;
 707         qeth_l2_del_all_mc(card, 1);
 708         spin_lock_bh(&card->mclock);
 709         netdev_for_each_mc_addr(ha, dev)
 710                 qeth_l2_add_mc(card, ha->addr, 0);
 711
 712         netdev_for_each_uc_addr(ha, dev)
 713                 qeth_l2_add_mc(card, ha->addr, 1);
 714
 715         spin_unlock_bh(&card->mclock);
 716         if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 717                 return;
 718         qeth_setadp_promisc_mode(card);
 719 }
 720
 721 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 722 {
 723         int rc;
 724         struct qeth_hdr *hdr = NULL;
 725         int elements = 0;
 726         struct qeth_card *card = dev->ml_priv;
 727         struct sk_buff *new_skb = skb;
 728         int cast_type = qeth_l2_get_cast_type(card, skb);
 729         struct qeth_qdio_out_q *queue;
 730         int tx_bytes = skb->len;
 731         int data_offset = -1;
 732         int elements_needed = 0;
 733         int hd_len = 0;
 734
 735         if (card->qdio.do_prio_queueing || (cast_type &&
 736                                         card->info.is_multicast_different))
 737                 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
 738                                         qeth_get_ip_version(skb), cast_type)];
 739         else
 740                 queue = card->qdio.out_qs[card->qdio.default_out_queue];
 741
 742         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
 743                 card->stats.tx_carrier_errors++;
 744                 goto tx_drop;
 745         }
 746
 747         if ((card->info.type == QETH_CARD_TYPE_OSN) &&
 748             (skb->protocol == htons(ETH_P_IPV6)))
 749                 goto tx_drop;
 750
 751         if (card->options.performance_stats) {
 752                 card->perf_stats.outbound_cnt++;
 753                 card->perf_stats.outbound_start_time = qeth_get_micros();
 754         }
 755         netif_stop_queue(dev);
 756
 757         if (card->info.type == QETH_CARD_TYPE_OSN)
 758                 hdr = (struct qeth_hdr *)skb->data;
 759         else {
 760                 if (card->info.type == QETH_CARD_TYPE_IQD) {
 761                         new_skb = skb;
 762                         data_offset = ETH_HLEN;
 763                         hd_len = ETH_HLEN;
 764                         hdr = kmem_cache_alloc(qeth_core_header_cache,
 765                                                 GFP_ATOMIC);
 766                         if (!hdr)
 767                                 goto tx_drop;
 768                         elements_needed++;
 769                         skb_reset_mac_header(new_skb);
 770                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 771                         hdr->hdr.l2.pkt_length = new_skb->len;
 772                         memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
 773                                 skb_mac_header(new_skb), ETH_HLEN);
 774                 } else {
 775                         /* create a clone with writeable headroom */
 776                         new_skb = skb_realloc_headroom(skb,
 777                                                 sizeof(struct qeth_hdr));
 778                         if (!new_skb)
 779                                 goto tx_drop;
 780                         hdr = (struct qeth_hdr *)skb_push(new_skb,
 781                                                 sizeof(struct qeth_hdr));
 782                         skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
 783                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 784                 }
 785         }
 786
 787         elements = qeth_get_elements_no(card, new_skb, elements_needed);
 788         if (!elements) {
 789                 if (data_offset >= 0)
 790                         kmem_cache_free(qeth_core_header_cache, hdr);
 791                 goto tx_drop;
 792         }
 793
 794         if (card->info.type != QETH_CARD_TYPE_IQD) {
 795                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
 796                     sizeof(struct qeth_hdr_layer2)))
 797                         goto tx_drop;
 798                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
 799                                          elements);
 800         } else
 801                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
 802                                         elements, data_offset, hd_len);
 803         if (!rc) {
 804                 card->stats.tx_packets++;
 805                 card->stats.tx_bytes += tx_bytes;
 806                 if (new_skb != skb)
 807                         dev_kfree_skb_any(skb);
 808                 rc = NETDEV_TX_OK;
 809         } else {
 810                 if (data_offset >= 0)
 811                         kmem_cache_free(qeth_core_header_cache, hdr);
 812
 813                 if (rc == -EBUSY) {
 814                         if (new_skb != skb)
 815                                 dev_kfree_skb_any(new_skb);
 816                         return NETDEV_TX_BUSY;
 817                 } else
 818                         goto tx_drop;
 819         }
 820
 821         netif_wake_queue(dev);
 822         if (card->options.performance_stats)
 823                 card->perf_stats.outbound_time += qeth_get_micros() -
 824                         card->perf_stats.outbound_start_time;
 825         return rc;
 826
 827 tx_drop:
 828         card->stats.tx_dropped++;
 829         card->stats.tx_errors++;
 830         if ((new_skb != skb) && new_skb)
 831                 dev_kfree_skb_any(new_skb);
 832         dev_kfree_skb_any(skb);
 833         netif_wake_queue(dev);
 834         return NETDEV_TX_OK;
 835 }
 836
 837 static int __qeth_l2_open(struct net_device *dev)
 838 {
 839         struct qeth_card *card = dev->ml_priv;
 840         int rc = 0;
 841
 842         QETH_CARD_TEXT(card, 4, "qethopen");
 843         if (card->state == CARD_STATE_UP)
 844                 return rc;
 845         if (card->state != CARD_STATE_SOFTSETUP)
 846                 return -ENODEV;
 847
 848         if ((card->info.type != QETH_CARD_TYPE_OSN) &&
 849              (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
 850                 QETH_CARD_TEXT(card, 4, "nomacadr");
 851                 return -EPERM;
 852         }
 853         card->data.state = CH_STATE_UP;
 854         card->state = CARD_STATE_UP;
 855         netif_start_queue(dev);
 856
 857         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
 858                 napi_enable(&card->napi);
 859                 napi_schedule(&card->napi);
 860         } else
 861                 rc = -EIO;
 862         return rc;
 863 }
 864
 865 static int qeth_l2_open(struct net_device *dev)
 866 {
 867         struct qeth_card *card = dev->ml_priv;
 868
 869         QETH_CARD_TEXT(card, 5, "qethope_");
 870         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 871                 QETH_CARD_TEXT(card, 3, "openREC");
 872                 return -ERESTARTSYS;
 873         }
 874         return __qeth_l2_open(dev);
 875 }
 876
 877 static int qeth_l2_stop(struct net_device *dev)
 878 {
 879         struct qeth_card *card = dev->ml_priv;
 880
 881         QETH_CARD_TEXT(card, 4, "qethstop");
 882         netif_tx_disable(dev);
 883         if (card->state == CARD_STATE_UP) {
 884                 card->state = CARD_STATE_SOFTSETUP;
 885                 napi_disable(&card->napi);
 886         }
 887         return 0;
 888 }
 889
 890 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
 891 {
 892         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 893
 894         qeth_l2_create_device_attributes(&gdev->dev);
 895         INIT_LIST_HEAD(&card->vid_list);
 896         INIT_LIST_HEAD(&card->mc_list);
 897         card->options.layer2 = 1;
 898         card->info.hwtrap = 0;
 899         return 0;
 900 }
 901
 902 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
 903 {
 904         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
 905
 906         qeth_l2_remove_device_attributes(&cgdev->dev);
 907         qeth_set_allowed_threads(card, 0, 1);
 908         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
 909
 910         if (cgdev->state == CCWGROUP_ONLINE)
 911                 qeth_l2_set_offline(cgdev);
 912
 913         if (card->dev) {
 914                 unregister_netdev(card->dev);
 915                 card->dev = NULL;
 916         }
 917         return;
 918 }
 919
 920 static const struct ethtool_ops qeth_l2_ethtool_ops = {
 921         .get_link = ethtool_op_get_link,
 922         .get_strings = qeth_core_get_strings,
 923         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 924         .get_sset_count = qeth_core_get_sset_count,
 925         .get_drvinfo = qeth_core_get_drvinfo,
 926         .get_settings = qeth_core_ethtool_get_settings,
 927 };
 928
 929 static const struct ethtool_ops qeth_l2_osn_ops = {
 930         .get_strings = qeth_core_get_strings,
 931         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 932         .get_sset_count = qeth_core_get_sset_count,
 933         .get_drvinfo = qeth_core_get_drvinfo,
 934 };
 935
 936 static const struct net_device_ops qeth_l2_netdev_ops = {
 937         .ndo_open               = qeth_l2_open,
 938         .ndo_stop               = qeth_l2_stop,
 939         .ndo_get_stats          = qeth_get_stats,
 940         .ndo_start_xmit         = qeth_l2_hard_start_xmit,
 941         .ndo_validate_addr      = eth_validate_addr,
 942         .ndo_set_rx_mode        = qeth_l2_set_multicast_list,
 943         .ndo_do_ioctl           = qeth_l2_do_ioctl,
 944         .ndo_set_mac_address    = qeth_l2_set_mac_address,
 945         .ndo_change_mtu         = qeth_change_mtu,
 946         .ndo_vlan_rx_add_vid    = qeth_l2_vlan_rx_add_vid,
 947         .ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
 948         .ndo_tx_timeout         = qeth_tx_timeout,
 949 };
 950
 951 static int qeth_l2_setup_netdev(struct qeth_card *card)
 952 {
 953         switch (card->info.type) {
 954         case QETH_CARD_TYPE_IQD:
 955                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
 956                 break;
 957         case QETH_CARD_TYPE_OSN:
 958                 card->dev = alloc_netdev(0, "osn%d", ether_setup);
 959                 card->dev->flags |= IFF_NOARP;
 960                 break;
 961         default:
 962                 card->dev = alloc_etherdev(0);
 963         }
 964
 965         if (!card->dev)
 966                 return -ENODEV;
 967
 968         card->dev->ml_priv = card;
 969         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
 970         card->dev->mtu = card->info.initial_mtu;
 971         card->dev->netdev_ops = &qeth_l2_netdev_ops;
 972         card->dev->ethtool_ops =
 973                 (card->info.type != QETH_CARD_TYPE_OSN) ?
 974                 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
 975         card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
 976         card->info.broadcast_capable = 1;
 977         qeth_l2_request_initial_mac(card);
 978         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
 979         netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
 980         return register_netdev(card->dev);
 981 }
 982
 983 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 984 {
 985         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 986         int rc = 0;
 987         enum qeth_card_states recover_flag;
 988
 989         mutex_lock(&card->discipline_mutex);
 990         mutex_lock(&card->conf_mutex);
 991         QETH_DBF_TEXT(SETUP, 2, "setonlin");
 992         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 993
 994         recover_flag = card->state;
 995         rc = qeth_core_hardsetup_card(card);
 996         if (rc) {
 997                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
 998                 rc = -ENODEV;
 999                 goto out_remove;
1000         }
1001         qeth_bridgeport_query_support(card);
1002         if (card->options.sbp.supported_funcs)
1003                 dev_info(&card->gdev->dev,
1004                 "The device represents a HiperSockets Bridge Capable Port\n");
1005         qeth_trace_features(card);
1006
1007         if (!card->dev && qeth_l2_setup_netdev(card)) {
1008                 rc = -ENODEV;
1009                 goto out_remove;
1010         }
1011
1012         if (card->info.type != QETH_CARD_TYPE_OSN)
1013                 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1014
1015         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1016                 if (card->info.hwtrap &&
1017                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1018                         card->info.hwtrap = 0;
1019         } else
1020                 card->info.hwtrap = 0;
1021
1022         qeth_l2_setup_bridgeport_attrs(card);
1023
1024         card->state = CARD_STATE_HARDSETUP;
1025         memset(&card->rx, 0, sizeof(struct qeth_rx));
1026         qeth_print_status_message(card);
1027
1028         /* softsetup */
1029         QETH_DBF_TEXT(SETUP, 2, "softsetp");
1030
1031         rc = qeth_send_startlan(card);
1032         if (rc) {
1033                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1034                 if (rc == 0xe080) {
1035                         dev_warn(&card->gdev->dev,
1036                                 "The LAN is offline\n");
1037                         card->lan_online = 0;
1038                         goto contin;
1039                 }
1040                 rc = -ENODEV;
1041                 goto out_remove;
1042         } else
1043                 card->lan_online = 1;
1044
1045 contin:
1046         if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1047             (card->info.type == QETH_CARD_TYPE_OSX)) {
1048                 /* configure isolation level */
1049                 rc = qeth_set_access_ctrl_online(card, 0);
1050                 if (rc) {
1051                         rc = -ENODEV;
1052                         goto out_remove;
1053                 }
1054         }
1055
1056         if (card->info.type != QETH_CARD_TYPE_OSN &&
1057             card->info.type != QETH_CARD_TYPE_OSM)
1058                 qeth_l2_process_vlans(card);
1059
1060         netif_tx_disable(card->dev);
1061
1062         rc = qeth_init_qdio_queues(card);
1063         if (rc) {
1064                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1065                 rc = -ENODEV;
1066                 goto out_remove;
1067         }
1068         card->state = CARD_STATE_SOFTSETUP;
1069         if (card->lan_online)
1070                 netif_carrier_on(card->dev);
1071         else
1072                 netif_carrier_off(card->dev);
1073
1074         qeth_set_allowed_threads(card, 0xffffffff, 0);
1075         if (recover_flag == CARD_STATE_RECOVER) {
1076                 if (recovery_mode &&
1077                     card->info.type != QETH_CARD_TYPE_OSN) {
1078                         __qeth_l2_open(card->dev);
1079                 } else {
1080                         rtnl_lock();
1081                         dev_open(card->dev);
1082                         rtnl_unlock();
1083                 }
1084                 /* this also sets saved unicast addresses */
1085                 qeth_l2_set_multicast_list(card->dev);
1086         }
1087         /* let user_space know that device is online */
1088         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1089         mutex_unlock(&card->conf_mutex);
1090         mutex_unlock(&card->discipline_mutex);
1091         return 0;
1092
1093 out_remove:
1094         qeth_l2_stop_card(card, 0);
1095         ccw_device_set_offline(CARD_DDEV(card));
1096         ccw_device_set_offline(CARD_WDEV(card));
1097         ccw_device_set_offline(CARD_RDEV(card));
1098         qdio_free(CARD_DDEV(card));
1099         if (recover_flag == CARD_STATE_RECOVER)
1100                 card->state = CARD_STATE_RECOVER;
1101         else
1102                 card->state = CARD_STATE_DOWN;
1103         mutex_unlock(&card->conf_mutex);
1104         mutex_unlock(&card->discipline_mutex);
1105         return rc;
1106 }
1107
1108 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1109 {
1110         return __qeth_l2_set_online(gdev, 0);
1111 }
1112
1113 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1114                                         int recovery_mode)
1115 {
1116         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1117         int rc = 0, rc2 = 0, rc3 = 0;
1118         enum qeth_card_states recover_flag;
1119
1120         mutex_lock(&card->discipline_mutex);
1121         mutex_lock(&card->conf_mutex);
1122         QETH_DBF_TEXT(SETUP, 3, "setoffl");
1123         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1124
1125         if (card->dev && netif_carrier_ok(card->dev))
1126                 netif_carrier_off(card->dev);
1127         recover_flag = card->state;
1128         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1129                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1130                 card->info.hwtrap = 1;
1131         }
1132         qeth_l2_stop_card(card, recovery_mode);
1133         rc  = ccw_device_set_offline(CARD_DDEV(card));
1134         rc2 = ccw_device_set_offline(CARD_WDEV(card));
1135         rc3 = ccw_device_set_offline(CARD_RDEV(card));
1136         if (!rc)
1137                 rc = (rc2) ? rc2 : rc3;
1138         if (rc)
1139                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1140         qdio_free(CARD_DDEV(card));
1141         if (recover_flag == CARD_STATE_UP)
1142                 card->state = CARD_STATE_RECOVER;
1143         /* let user_space know that device is offline */
1144         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1145         mutex_unlock(&card->conf_mutex);
1146         mutex_unlock(&card->discipline_mutex);
1147         return 0;
1148 }
1149
1150 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1151 {
1152         return __qeth_l2_set_offline(cgdev, 0);
1153 }
1154
1155 static int qeth_l2_recover(void *ptr)
1156 {
1157         struct qeth_card *card;
1158         int rc = 0;
1159
1160         card = (struct qeth_card *) ptr;
1161         QETH_CARD_TEXT(card, 2, "recover1");
1162         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1163                 return 0;
1164         QETH_CARD_TEXT(card, 2, "recover2");
1165         dev_warn(&card->gdev->dev,
1166                 "A recovery process has been started for the device\n");
1167         qeth_set_recovery_task(card);
1168         __qeth_l2_set_offline(card->gdev, 1);
1169         rc = __qeth_l2_set_online(card->gdev, 1);
1170         if (!rc)
1171                 dev_info(&card->gdev->dev,
1172                         "Device successfully recovered!\n");
1173         else {
1174                 qeth_close_dev(card);
1175                 dev_warn(&card->gdev->dev, "The qeth device driver "
1176                                 "failed to recover an error on the device\n");
1177         }
1178         qeth_clear_recovery_task(card);
1179         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1180         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1181         return 0;
1182 }
1183
1184 static int __init qeth_l2_init(void)
1185 {
1186         pr_info("register layer 2 discipline\n");
1187         return 0;
1188 }
1189
1190 static void __exit qeth_l2_exit(void)
1191 {
1192         pr_info("unregister layer 2 discipline\n");
1193 }
1194
1195 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1196 {
1197         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1198         qeth_set_allowed_threads(card, 0, 1);
1199         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1200                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1201         qeth_qdio_clear_card(card, 0);
1202         qeth_clear_qdio_buffers(card);
1203         qdio_free(CARD_DDEV(card));
1204 }
1205
1206 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1207 {
1208         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1209
1210         if (card->dev)
1211                 netif_device_detach(card->dev);
1212         qeth_set_allowed_threads(card, 0, 1);
1213         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1214         if (gdev->state == CCWGROUP_OFFLINE)
1215                 return 0;
1216         if (card->state == CARD_STATE_UP) {
1217                 if (card->info.hwtrap)
1218                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1219                 __qeth_l2_set_offline(card->gdev, 1);
1220         } else
1221                 __qeth_l2_set_offline(card->gdev, 0);
1222         return 0;
1223 }
1224
1225 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1226 {
1227         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1228         int rc = 0;
1229
1230         if (gdev->state == CCWGROUP_OFFLINE)
1231                 goto out;
1232
1233         if (card->state == CARD_STATE_RECOVER) {
1234                 rc = __qeth_l2_set_online(card->gdev, 1);
1235                 if (rc) {
1236                         rtnl_lock();
1237                         dev_close(card->dev);
1238                         rtnl_unlock();
1239                 }
1240         } else
1241                 rc = __qeth_l2_set_online(card->gdev, 0);
1242 out:
1243         qeth_set_allowed_threads(card, 0xffffffff, 0);
1244         if (card->dev)
1245                 netif_device_attach(card->dev);
1246         if (rc)
1247                 dev_warn(&card->gdev->dev, "The qeth device driver "
1248                         "failed to recover an error on the device\n");
1249         return rc;
1250 }
1251
1252 /* Returns zero if the command is successfully "consumed" */
1253 static int qeth_l2_control_event(struct qeth_card *card,
1254                                         struct qeth_ipa_cmd *cmd)
1255 {
1256         switch (cmd->hdr.command) {
1257         case IPA_CMD_SETBRIDGEPORT:
1258                 if (cmd->data.sbp.hdr.command_code ==
1259                                 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1260                         qeth_bridge_state_change(card, cmd);
1261                         return 0;
1262                 } else
1263                         return 1;
1264         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1265                 qeth_bridge_host_event(card, cmd);
1266                 return 0;
1267         default:
1268                 return 1;
1269         }
1270 }
1271
1272 struct qeth_discipline qeth_l2_discipline = {
1273         .start_poll = qeth_qdio_start_poll,
1274         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1275         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1276         .recover = qeth_l2_recover,
1277         .setup = qeth_l2_probe_device,
1278         .remove = qeth_l2_remove_device,
1279         .set_online = qeth_l2_set_online,
1280         .set_offline = qeth_l2_set_offline,
1281         .shutdown = qeth_l2_shutdown,
1282         .freeze = qeth_l2_pm_suspend,
1283         .thaw = qeth_l2_pm_resume,
1284         .restore = qeth_l2_pm_resume,
1285         .control_event_handler = qeth_l2_control_event,
1286 };
1287 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1288
1289 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1290                            struct qeth_cmd_buffer *iob)
1291 {
1292         unsigned long flags;
1293         int rc = 0;
1294
1295         QETH_CARD_TEXT(card, 5, "osndctrd");
1296
1297         wait_event(card->wait_q,
1298                    atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1299         qeth_prepare_control_data(card, len, iob);
1300         QETH_CARD_TEXT(card, 6, "osnoirqp");
1301         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1302         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1303                               (addr_t) iob, 0, 0);
1304         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1305         if (rc) {
1306                 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1307                            "ccw_device_start rc = %i\n", rc);
1308                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1309                 qeth_release_buffer(iob->channel, iob);
1310                 atomic_set(&card->write.irq_pending, 0);
1311                 wake_up(&card->wait_q);
1312         }
1313         return rc;
1314 }
1315
1316 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1317                         struct qeth_cmd_buffer *iob, int data_len)
1318 {
1319         u16 s1, s2;
1320
1321         QETH_CARD_TEXT(card, 4, "osndipa");
1322
1323         qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1324         s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1325         s2 = (u16)data_len;
1326         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1327         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1328         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1329         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1330         return qeth_osn_send_control_data(card, s1, iob);
1331 }
1332
1333 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1334 {
1335         struct qeth_cmd_buffer *iob;
1336         struct qeth_card *card;
1337         int rc;
1338
1339         if (!dev)
1340                 return -ENODEV;
1341         card = dev->ml_priv;
1342         if (!card)
1343                 return -ENODEV;
1344         QETH_CARD_TEXT(card, 2, "osnsdmc");
1345         if ((card->state != CARD_STATE_UP) &&
1346             (card->state != CARD_STATE_SOFTSETUP))
1347                 return -ENODEV;
1348         iob = qeth_wait_for_buffer(&card->write);
1349         memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1350         rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1351         return rc;
1352 }
1353 EXPORT_SYMBOL(qeth_osn_assist);
1354
1355 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1356                   int (*assist_cb)(struct net_device *, void *),
1357                   int (*data_cb)(struct sk_buff *))
1358 {
1359         struct qeth_card *card;
1360
1361         *dev = qeth_l2_netdev_by_devno(read_dev_no);
1362         if (*dev == NULL)
1363                 return -ENODEV;
1364         card = (*dev)->ml_priv;
1365         if (!card)
1366                 return -ENODEV;
1367         QETH_CARD_TEXT(card, 2, "osnreg");
1368         if ((assist_cb == NULL) || (data_cb == NULL))
1369                 return -EINVAL;
1370         card->osn_info.assist_cb = assist_cb;
1371         card->osn_info.data_cb = data_cb;
1372         return 0;
1373 }
1374 EXPORT_SYMBOL(qeth_osn_register);
1375
1376 void qeth_osn_deregister(struct net_device *dev)
1377 {
1378         struct qeth_card *card;
1379
1380         if (!dev)
1381                 return;
1382         card = dev->ml_priv;
1383         if (!card)
1384                 return;
1385         QETH_CARD_TEXT(card, 2, "osndereg");
1386         card->osn_info.assist_cb = NULL;
1387         card->osn_info.data_cb = NULL;
1388         return;
1389 }
1390 EXPORT_SYMBOL(qeth_osn_deregister);
1391
1392 /* SETBRIDGEPORT support, async notifications */
1393
1394 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1395
1396 /**
1397  * qeth_bridge_emit_host_event() - bridgeport address change notification
1398  * @card:  qeth_card structure pointer, for udev events.
1399  * @evtype:  "normal" register/unregister, or abort, or reset. For abort
1400  *            and reset token and addr_lnid are unused and may be NULL.
1401  * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
1402  *                        object, 0 - addition of an object.
1403  *                        0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1404  * @token: "network token" structure identifying physical address of the port.
1405  * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1406  *
1407  * This function is called when registrations and deregistrations are
1408  * reported by the hardware, and also when notifications are enabled -
1409  * for all currently registered addresses.
1410  */
1411 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1412         enum qeth_an_event_type evtype,
1413         u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1414 {
1415         char str[7][32];
1416         char *env[8];
1417         int i = 0;
1418
1419         switch (evtype) {
1420         case anev_reg_unreg:
1421                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1422                                 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1423                                 ? "deregister" : "register");
1424                 env[i] = str[i]; i++;
1425                 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1426                         snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1427                                 addr_lnid->lnid);
1428                         env[i] = str[i]; i++;
1429                 }
1430                 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1431                         snprintf(str[i], sizeof(str[i]), "MAC=%pM6",
1432                                 &addr_lnid->mac);
1433                         env[i] = str[i]; i++;
1434                 }
1435                 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1436                         token->cssid, token->ssid, token->devnum);
1437                 env[i] = str[i]; i++;
1438                 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1439                 env[i] = str[i]; i++;
1440                 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1441                                 token->chpid);
1442                 env[i] = str[i]; i++;
1443                 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1444                 env[i] = str[i]; i++;
1445                 break;
1446         case anev_abort:
1447                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1448                 env[i] = str[i]; i++;
1449                 break;
1450         case anev_reset:
1451                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1452                 env[i] = str[i]; i++;
1453                 break;
1454         }
1455         env[i] = NULL;
1456         kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1457 }
1458
1459 struct qeth_bridge_state_data {
1460         struct work_struct worker;
1461         struct qeth_card *card;
1462         struct qeth_sbp_state_change qports;
1463 };
1464
1465 static void qeth_bridge_state_change_worker(struct work_struct *work)
1466 {
1467         struct qeth_bridge_state_data *data =
1468                 container_of(work, struct qeth_bridge_state_data, worker);
1469         /* We are only interested in the first entry - local port */
1470         struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1471         char env_locrem[32];
1472         char env_role[32];
1473         char env_state[32];
1474         char *env[] = {
1475                 env_locrem,
1476                 env_role,
1477                 env_state,
1478                 NULL
1479         };
1480
1481         /* Role should not change by itself, but if it did, */
1482         /* information from the hardware is authoritative.  */
1483         mutex_lock(&data->card->conf_mutex);
1484         data->card->options.sbp.role = entry->role;
1485         mutex_unlock(&data->card->conf_mutex);
1486
1487         snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1488         snprintf(env_role, sizeof(env_role), "ROLE=%s",
1489                 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1490                 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1491                 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1492                 "<INVALID>");
1493         snprintf(env_state, sizeof(env_state), "STATE=%s",
1494                 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1495                 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1496                 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1497                 "<INVALID>");
1498         kobject_uevent_env(&data->card->gdev->dev.kobj,
1499                                 KOBJ_CHANGE, env);
1500         kfree(data);
1501 }
1502
1503 static void qeth_bridge_state_change(struct qeth_card *card,
1504                                         struct qeth_ipa_cmd *cmd)
1505 {
1506         struct qeth_sbp_state_change *qports =
1507                  &cmd->data.sbp.data.state_change;
1508         struct qeth_bridge_state_data *data;
1509         int extrasize;
1510
1511         QETH_CARD_TEXT(card, 2, "brstchng");
1512         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1513                 QETH_CARD_TEXT_(card, 2, "BPsz%.8d", qports->entry_length);
1514                 return;
1515         }
1516         extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1517         data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1518                 GFP_ATOMIC);
1519         if (!data) {
1520                 QETH_CARD_TEXT(card, 2, "BPSalloc");
1521                 return;
1522         }
1523         INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1524         data->card = card;
1525         memcpy(&data->qports, qports,
1526                         sizeof(struct qeth_sbp_state_change) + extrasize);
1527         queue_work(qeth_wq, &data->worker);
1528 }
1529
1530 struct qeth_bridge_host_data {
1531         struct work_struct worker;
1532         struct qeth_card *card;
1533         struct qeth_ipacmd_addr_change hostevs;
1534 };
1535
1536 static void qeth_bridge_host_event_worker(struct work_struct *work)
1537 {
1538         struct qeth_bridge_host_data *data =
1539                 container_of(work, struct qeth_bridge_host_data, worker);
1540         int i;
1541
1542         if (data->hostevs.lost_event_mask) {
1543                 dev_info(&data->card->gdev->dev,
1544 "Address notification from the HiperSockets Bridge Port stopped %s (%s)\n",
1545                         data->card->dev->name,
1546                         (data->hostevs.lost_event_mask == 0x01)
1547                         ? "Overflow"
1548                         : (data->hostevs.lost_event_mask == 0x02)
1549                         ? "Bridge port state change"
1550                         : "Unknown reason");
1551                 mutex_lock(&data->card->conf_mutex);
1552                 data->card->options.sbp.hostnotification = 0;
1553                 mutex_unlock(&data->card->conf_mutex);
1554                 qeth_bridge_emit_host_event(data->card, anev_abort,
1555                         0, NULL, NULL);
1556         } else
1557                 for (i = 0; i < data->hostevs.num_entries; i++) {
1558                         struct qeth_ipacmd_addr_change_entry *entry =
1559                                         &data->hostevs.entry[i];
1560                         qeth_bridge_emit_host_event(data->card,
1561                                         anev_reg_unreg,
1562                                         entry->change_code,
1563                                         &entry->token, &entry->addr_lnid);
1564                 }
1565         kfree(data);
1566 }
1567
1568 static void qeth_bridge_host_event(struct qeth_card *card,
1569                                         struct qeth_ipa_cmd *cmd)
1570 {
1571         struct qeth_ipacmd_addr_change *hostevs =
1572                  &cmd->data.addrchange;
1573         struct qeth_bridge_host_data *data;
1574         int extrasize;
1575
1576         QETH_CARD_TEXT(card, 2, "brhostev");
1577         if (cmd->hdr.return_code != 0x0000) {
1578                 if (cmd->hdr.return_code == 0x0010) {
1579                         if (hostevs->lost_event_mask == 0x00)
1580                                 hostevs->lost_event_mask = 0xff;
1581                 } else {
1582                         QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1583                                 cmd->hdr.return_code);
1584                         return;
1585                 }
1586         }
1587         extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1588                                                 hostevs->num_entries;
1589         data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1590                 GFP_ATOMIC);
1591         if (!data) {
1592                 QETH_CARD_TEXT(card, 2, "BPHalloc");
1593                 return;
1594         }
1595         INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1596         data->card = card;
1597         memcpy(&data->hostevs, hostevs,
1598                         sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1599         queue_work(qeth_wq, &data->worker);
1600 }
1601
1602 /* SETBRIDGEPORT support; sending commands */
1603
1604 struct _qeth_sbp_cbctl {
1605         u16 ipa_rc;
1606         u16 cmd_rc;
1607         union {
1608                 u32 supported;
1609                 struct {
1610                         enum qeth_sbp_roles *role;
1611                         enum qeth_sbp_states *state;
1612                 } qports;
1613         } data;
1614 };
1615
1616 /**
1617  * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1618  * @card:                     qeth_card structure pointer, for debug messages.
1619  * @cbctl:                    state structure with hardware return codes.
1620  * @setcmd:                   IPA command code
1621  *
1622  * Returns negative errno-compatible error indication or 0 on success.
1623  */
1624 static int qeth_bridgeport_makerc(struct qeth_card *card,
1625         struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1626 {
1627         int rc;
1628
1629         switch (cbctl->ipa_rc) {
1630         case IPA_RC_SUCCESS:
1631                 switch (cbctl->cmd_rc) {
1632                 case 0x0000:
1633                         rc = 0;
1634                         break;
1635                 case 0x0004:
1636                         rc = -ENOSYS;
1637                         break;
1638                 case 0x000C: /* Not configured as bridge Port */
1639                         rc = -ENODEV; /* maybe not the best code here? */
1640                         dev_err(&card->gdev->dev,
1641         "The HiperSockets device is not configured as a Bridge Port\n");
1642                         break;
1643                 case 0x0014: /* Another device is Primary */
1644                         switch (setcmd) {
1645                         case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1646                                 rc = -EEXIST;
1647                                 dev_err(&card->gdev->dev,
1648         "The HiperSockets LAN already has a primary Bridge Port\n");
1649                                 break;
1650                         case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1651                                 rc = -EBUSY;
1652                                 dev_err(&card->gdev->dev,
1653         "The HiperSockets device is already a primary Bridge Port\n");
1654                                 break;
1655                         default:
1656                                 rc = -EIO;
1657                         }
1658                         break;
1659                 case 0x0018: /* This device is currently Secondary */
1660                         rc = -EBUSY;
1661                         dev_err(&card->gdev->dev,
1662         "The HiperSockets device is already a secondary Bridge Port\n");
1663                         break;
1664                 case 0x001C: /* Limit for Secondary devices reached */
1665                         rc = -EEXIST;
1666                         dev_err(&card->gdev->dev,
1667         "The HiperSockets LAN cannot have more secondary Bridge Ports\n");
1668                         break;
1669                 case 0x0024: /* This device is currently Primary */
1670                         rc = -EBUSY;
1671                         dev_err(&card->gdev->dev,
1672         "The HiperSockets device is already a primary Bridge Port\n");
1673                         break;
1674                 case 0x0020: /* Not authorized by zManager */
1675                         rc = -EACCES;
1676                         dev_err(&card->gdev->dev,
1677         "The HiperSockets device is not authorized to be a Bridge Port\n");
1678                         break;
1679                 default:
1680                         rc = -EIO;
1681                 }
1682                 break;
1683         case IPA_RC_NOTSUPP:
1684                 rc = -ENOSYS;
1685                 break;
1686         case IPA_RC_UNSUPPORTED_COMMAND:
1687                 rc = -ENOSYS;
1688                 break;
1689         default:
1690                 rc = -EIO;
1691         }
1692         if (rc) {
1693                 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1694                 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1695         }
1696         return rc;
1697 }
1698
1699 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1700         struct qeth_reply *reply, unsigned long data)
1701 {
1702         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1703         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1704         QETH_CARD_TEXT(card, 2, "brqsupcb");
1705         cbctl->ipa_rc = cmd->hdr.return_code;
1706         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1707         if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1708                 cbctl->data.supported =
1709                         cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1710         } else {
1711                 cbctl->data.supported = 0;
1712         }
1713         return 0;
1714 }
1715
1716 /**
1717  * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1718  * @card:                            qeth_card structure pointer.
1719  *
1720  * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1721  * strucutre: card->options.sbp.supported_funcs.
1722  */
1723 static void qeth_bridgeport_query_support(struct qeth_card *card)
1724 {
1725         struct qeth_cmd_buffer *iob;
1726         struct qeth_ipa_cmd *cmd;
1727         struct _qeth_sbp_cbctl cbctl;
1728
1729         QETH_CARD_TEXT(card, 2, "brqsuppo");
1730         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1731         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1732         cmd->data.sbp.hdr.cmdlength =
1733                 sizeof(struct qeth_ipacmd_sbp_hdr) +
1734                 sizeof(struct qeth_sbp_query_cmds_supp);
1735         cmd->data.sbp.hdr.command_code =
1736                 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1737         cmd->data.sbp.hdr.used_total = 1;
1738         cmd->data.sbp.hdr.seq_no = 1;
1739         if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1740                                                         (void *)&cbctl) ||
1741             qeth_bridgeport_makerc(card, &cbctl,
1742                                         IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1743                 /* non-zero makerc signifies failure, and produce messages */
1744                 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1745                 return;
1746         }
1747         card->options.sbp.supported_funcs = cbctl.data.supported;
1748 }
1749
1750 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1751         struct qeth_reply *reply, unsigned long data)
1752 {
1753         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1754         struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1755         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1756
1757         QETH_CARD_TEXT(card, 2, "brqprtcb");
1758         cbctl->ipa_rc = cmd->hdr.return_code;
1759         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1760         if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1761                 return 0;
1762         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1763                 cbctl->cmd_rc = 0xffff;
1764                 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1765                 return 0;
1766         }
1767         /* first entry contains the state of the local port */
1768         if (qports->num_entries > 0) {
1769                 if (cbctl->data.qports.role)
1770                         *cbctl->data.qports.role = qports->entry[0].role;
1771                 if (cbctl->data.qports.state)
1772                         *cbctl->data.qports.state = qports->entry[0].state;
1773         }
1774         return 0;
1775 }
1776
1777 /**
1778  * qeth_bridgeport_query_ports() - query local bridgeport status.
1779  * @card:                          qeth_card structure pointer.
1780  * @role:   Role of the port: 0-none, 1-primary, 2-secondary.
1781  * @state:  State of the port: 0-inactive, 1-standby, 2-active.
1782  *
1783  * Returns negative errno-compatible error indication or 0 on success.
1784  *
1785  * 'role' and 'state' are not updated in case of hardware operation failure.
1786  */
1787 int qeth_bridgeport_query_ports(struct qeth_card *card,
1788         enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1789 {
1790         int rc = 0;
1791         struct qeth_cmd_buffer *iob;
1792         struct qeth_ipa_cmd *cmd;
1793         struct _qeth_sbp_cbctl cbctl = {
1794                 .data = {
1795                         .qports = {
1796                                 .role = role,
1797                                 .state = state,
1798                         },
1799                 },
1800         };
1801
1802         QETH_CARD_TEXT(card, 2, "brqports");
1803         if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1804                 return -EOPNOTSUPP;
1805         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1806         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1807         cmd->data.sbp.hdr.cmdlength =
1808                 sizeof(struct qeth_ipacmd_sbp_hdr);
1809         cmd->data.sbp.hdr.command_code =
1810                 IPA_SBP_QUERY_BRIDGE_PORTS;
1811         cmd->data.sbp.hdr.used_total = 1;
1812         cmd->data.sbp.hdr.seq_no = 1;
1813         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1814                                 (void *)&cbctl);
1815         if (rc)
1816                 return rc;
1817         rc = qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1818         if (rc)
1819                 return rc;
1820         return 0;
1821 }
1822 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1823
1824 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1825         struct qeth_reply *reply, unsigned long data)
1826 {
1827         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1828         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1829         QETH_CARD_TEXT(card, 2, "brsetrcb");
1830         cbctl->ipa_rc = cmd->hdr.return_code;
1831         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1832         return 0;
1833 }
1834
1835 /**
1836  * qeth_bridgeport_setrole() - Assign primary role to the port.
1837  * @card:                      qeth_card structure pointer.
1838  * @role:                      Role to assign.
1839  *
1840  * Returns negative errno-compatible error indication or 0 on success.
1841  */
1842 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1843 {
1844         int rc = 0;
1845         int cmdlength;
1846         struct qeth_cmd_buffer *iob;
1847         struct qeth_ipa_cmd *cmd;
1848         struct _qeth_sbp_cbctl cbctl;
1849         enum qeth_ipa_sbp_cmd setcmd;
1850
1851         QETH_CARD_TEXT(card, 2, "brsetrol");
1852         switch (role) {
1853         case QETH_SBP_ROLE_NONE:
1854                 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1855                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1856                         sizeof(struct qeth_sbp_reset_role);
1857                 break;
1858         case QETH_SBP_ROLE_PRIMARY:
1859                 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1860                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1861                         sizeof(struct qeth_sbp_set_primary);
1862                 break;
1863         case QETH_SBP_ROLE_SECONDARY:
1864                 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1865                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1866                         sizeof(struct qeth_sbp_set_secondary);
1867                 break;
1868         default:
1869                 return -EINVAL;
1870         }
1871         if (!(card->options.sbp.supported_funcs & setcmd))
1872                 return -EOPNOTSUPP;
1873         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
1874         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1875         cmd->data.sbp.hdr.cmdlength = cmdlength;
1876         cmd->data.sbp.hdr.command_code = setcmd;
1877         cmd->data.sbp.hdr.used_total = 1;
1878         cmd->data.sbp.hdr.seq_no = 1;
1879         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1880                                 (void *)&cbctl);
1881         if (rc)
1882                 return rc;
1883         rc = qeth_bridgeport_makerc(card, &cbctl, setcmd);
1884         return rc;
1885 }
1886
1887 /**
1888  * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1889  * @card:                     qeth_card structure pointer, for debug messages.
1890  *
1891  * Returns negative errno-compatible error indication or 0 on success.
1892  */
1893 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1894 {
1895         int rc;
1896
1897         if (pnso_rc == 0)
1898                 switch (response) {
1899                 case 0x0001:
1900                         rc = 0;
1901                         break;
1902                 case 0x0004:
1903                 case 0x0100:
1904                 case 0x0106:
1905                         rc = -ENOSYS;
1906                         dev_err(&card->gdev->dev,
1907                                 "Setting address notification failed\n");
1908                         break;
1909                 case 0x0107:
1910                         rc = -EAGAIN;
1911                         break;
1912                 default:
1913                         rc = -EIO;
1914                 }
1915         else
1916                 rc = -EIO;
1917
1918         if (rc) {
1919                 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1920                 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1921         }
1922         return rc;
1923 }
1924
1925 static void qeth_bridgeport_an_set_cb(void *priv,
1926                 enum qdio_brinfo_entry_type type, void *entry)
1927 {
1928         struct qeth_card *card = (struct qeth_card *)priv;
1929         struct qdio_brinfo_entry_l2 *l2entry;
1930         u8 code;
1931
1932         if (type != l2_addr_lnid) {
1933                 WARN_ON_ONCE(1);
1934                 return;
1935         }
1936
1937         l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1938         code = IPA_ADDR_CHANGE_CODE_MACADDR;
1939         if (l2entry->addr_lnid.lnid)
1940                 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1941         qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1942                 (struct net_if_token *)&l2entry->nit,
1943                 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1944 }
1945
1946 /**
1947  * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1948  * @card:                     qeth_card structure pointer.
1949  * @enable:                   0 - disable, non-zero - enable notifications
1950  *
1951  * Returns negative errno-compatible error indication or 0 on success.
1952  *
1953  * On enable, emits a series of address notifications udev events for all
1954  * currently registered hosts.
1955  */
1956 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1957 {
1958         int rc;
1959         u16 response;
1960         struct ccw_device *ddev;
1961         struct subchannel_id schid;
1962
1963         if (!card)
1964                 return -EINVAL;
1965         if (!card->options.sbp.supported_funcs)
1966                 return -EOPNOTSUPP;
1967         ddev = CARD_DDEV(card);
1968         ccw_device_get_schid(ddev, &schid);
1969
1970         if (enable) {
1971                 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1972                 rc = qdio_pnso_brinfo(schid, 1, &response,
1973                         qeth_bridgeport_an_set_cb, card);
1974         } else
1975                 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
1976         return qeth_anset_makerc(card, rc, response);
1977 }
1978 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
1979
1980 module_init(qeth_l2_init);
1981 module_exit(qeth_l2_exit);
1982 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1983 MODULE_DESCRIPTION("qeth layer 2 discipline");
1984 MODULE_LICENSE("GPL");