drivers/s390/net/qeth_l2_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/string.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/slab.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/mii.h>
  20 #include <linux/ip.h>
  21 #include <linux/list.h>
  22
  23 #include "qeth_core.h"
  24 #include "qeth_l2.h"
  25
  26 static int qeth_l2_set_offline(struct ccwgroup_device *);
  27 static int qeth_l2_stop(struct net_device *);
  28 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
  29 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
  30                            enum qeth_ipa_cmds);
  31 static void qeth_l2_set_multicast_list(struct net_device *);
  32 static int qeth_l2_recover(void *);
  33 static void qeth_bridgeport_query_support(struct qeth_card *card);
  34 static void qeth_bridge_state_change(struct qeth_card *card,
  35                                         struct qeth_ipa_cmd *cmd);
  36 static void qeth_bridge_host_event(struct qeth_card *card,
  37                                         struct qeth_ipa_cmd *cmd);
  38
  39 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
  40 {
  41         struct qeth_card *card = dev->ml_priv;
  42         struct mii_ioctl_data *mii_data;
  43         int rc = 0;
  44
  45         if (!card)
  46                 return -ENODEV;
  47
  48         if (!qeth_card_hw_is_reachable(card))
  49                 return -ENODEV;
  50
  51         if (card->info.type == QETH_CARD_TYPE_OSN)
  52                 return -EPERM;
  53
  54         switch (cmd) {
  55         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
  56                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
  57                 break;
  58         case SIOC_QETH_GET_CARD_TYPE:
  59                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
  60                      card->info.type == QETH_CARD_TYPE_OSM ||
  61                      card->info.type == QETH_CARD_TYPE_OSX) &&
  62                     !card->info.guestlan)
  63                         return 1;
  64                 return 0;
  65                 break;
  66         case SIOCGMIIPHY:
  67                 mii_data = if_mii(rq);
  68                 mii_data->phy_id = 0;
  69                 break;
  70         case SIOCGMIIREG:
  71                 mii_data = if_mii(rq);
  72                 if (mii_data->phy_id != 0)
  73                         rc = -EINVAL;
  74                 else
  75                         mii_data->val_out = qeth_mdio_read(dev,
  76                                 mii_data->phy_id, mii_data->reg_num);
  77                 break;
  78         case SIOC_QETH_QUERY_OAT:
  79                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
  80                 break;
  81         default:
  82                 rc = -EOPNOTSUPP;
  83         }
  84         if (rc)
  85                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
  86         return rc;
  87 }
  88
  89 static int qeth_l2_verify_dev(struct net_device *dev)
  90 {
  91         struct qeth_card *card;
  92         unsigned long flags;
  93         int rc = 0;
  94
  95         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
  96         list_for_each_entry(card, &qeth_core_card_list.list, list) {
  97                 if (card->dev == dev) {
  98                         rc = QETH_REAL_CARD;
  99                         break;
 100                 }
 101         }
 102         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
 103
 104         return rc;
 105 }
 106
 107 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
 108 {
 109         struct qeth_card *card;
 110         struct net_device *ndev;
 111         __u16 temp_dev_no;
 112         unsigned long flags;
 113         struct ccw_dev_id read_devid;
 114
 115         ndev = NULL;
 116         memcpy(&temp_dev_no, read_dev_no, 2);
 117         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
 118         list_for_each_entry(card, &qeth_core_card_list.list, list) {
 119                 ccw_device_get_id(CARD_RDEV(card), &read_devid);
 120                 if (read_devid.devno == temp_dev_no) {
 121                         ndev = card->dev;
 122                         break;
 123                 }
 124         }
 125         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
 126         return ndev;
 127 }
 128
 129 static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
 130 {
 131         int rc;
 132
 133         if (retcode)
 134                 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
 135         switch (retcode) {
 136         case IPA_RC_SUCCESS:
 137                 rc = 0;
 138                 break;
 139         case IPA_RC_L2_UNSUPPORTED_CMD:
 140                 rc = -EOPNOTSUPP;
 141                 break;
 142         case IPA_RC_L2_ADDR_TABLE_FULL:
 143                 rc = -ENOSPC;
 144                 break;
 145         case IPA_RC_L2_DUP_MAC:
 146         case IPA_RC_L2_DUP_LAYER3_MAC:
 147                 rc = -EEXIST;
 148                 break;
 149         case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
 150         case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
 151                 rc = -EPERM;
 152                 break;
 153         case IPA_RC_L2_MAC_NOT_FOUND:
 154                 rc = -ENOENT;
 155                 break;
 156         case -ENOMEM:
 157                 rc = -ENOMEM;
 158                 break;
 159         default:
 160                 rc = -EIO;
 161                 break;
 162         }
 163         return rc;
 164 }
 165
 166 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
 167 {
 168         int rc;
 169
 170         QETH_CARD_TEXT(card, 2, "L2Sgmac");
 171         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 172                                         IPA_CMD_SETGMAC));
 173         if (rc == -EEXIST)
 174                 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
 175                         mac, QETH_CARD_IFNAME(card));
 176         else if (rc)
 177                 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
 178                         mac, QETH_CARD_IFNAME(card), rc);
 179         return rc;
 180 }
 181
 182 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
 183 {
 184         int rc;
 185
 186         QETH_CARD_TEXT(card, 2, "L2Dgmac");
 187         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 188                                         IPA_CMD_DELGMAC));
 189         if (rc)
 190                 QETH_DBF_MESSAGE(2,
 191                         "Could not delete group MAC %pM on %s: %d\n",
 192                         mac, QETH_CARD_IFNAME(card), rc);
 193         return rc;
 194 }
 195
 196 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
 197 {
 198         struct qeth_mc_mac *mc;
 199         int rc;
 200
 201         mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
 202
 203         if (!mc)
 204                 return;
 205
 206         memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
 207         mc->mc_addrlen = OSA_ADDR_LEN;
 208         mc->is_vmac = vmac;
 209
 210         if (vmac) {
 211                 rc = qeth_setdel_makerc(card,
 212                         qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC));
 213         } else {
 214                 rc = qeth_setdel_makerc(card,
 215                         qeth_l2_send_setgroupmac(card, mac));
 216         }
 217
 218         if (!rc)
 219                 list_add_tail(&mc->list, &card->mc_list);
 220         else
 221                 kfree(mc);
 222 }
 223
 224 static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
 225 {
 226         struct qeth_mc_mac *mc, *tmp;
 227
 228         spin_lock_bh(&card->mclock);
 229         list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
 230                 if (del) {
 231                         if (mc->is_vmac)
 232                                 qeth_l2_send_setdelmac(card, mc->mc_addr,
 233                                         IPA_CMD_DELVMAC);
 234                         else
 235                                 qeth_l2_send_delgroupmac(card, mc->mc_addr);
 236                 }
 237                 list_del(&mc->list);
 238                 kfree(mc);
 239         }
 240         spin_unlock_bh(&card->mclock);
 241 }
 242
 243 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
 244                         struct sk_buff *skb)
 245 {
 246         if (card->info.type == QETH_CARD_TYPE_OSN)
 247                 return RTN_UNSPEC;
 248         if (is_broadcast_ether_addr(skb->data))
 249                 return RTN_BROADCAST;
 250         if (is_multicast_ether_addr(skb->data))
 251                 return RTN_MULTICAST;
 252         return RTN_UNSPEC;
 253 }
 254
 255 static inline void qeth_l2_hdr_csum(struct qeth_card *card,
 256                                     struct qeth_hdr *hdr, struct sk_buff *skb)
 257 {
 258         struct iphdr *iph = ip_hdr(skb);
 259
 260         /* tcph->check contains already the pseudo hdr checksum
 261          * so just set the header flags
 262          */
 263         if (iph->protocol == IPPROTO_UDP)
 264                 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
 265         hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
 266                 QETH_HDR_EXT_CSUM_HDR_REQ;
 267         iph->check = 0;
 268         if (card->options.performance_stats)
 269                 card->perf_stats.tx_csum++;
 270 }
 271
 272 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
 273                         struct sk_buff *skb, int cast_type)
 274 {
 275         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
 276
 277         memset(hdr, 0, sizeof(struct qeth_hdr));
 278         hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
 279
 280         /* set byte byte 3 to casting flags */
 281         if (cast_type == RTN_MULTICAST)
 282                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 283         else if (cast_type == RTN_BROADCAST)
 284                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
 285         else
 286                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 287
 288         hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
 289         /* VSWITCH relies on the VLAN
 290          * information to be present in
 291          * the QDIO header */
 292         if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
 293                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
 294                 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
 295         }
 296 }
 297
 298 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
 299                         struct qeth_reply *reply, unsigned long data)
 300 {
 301         struct qeth_ipa_cmd *cmd;
 302
 303         QETH_CARD_TEXT(card, 2, "L2sdvcb");
 304         cmd = (struct qeth_ipa_cmd *) data;
 305         if (cmd->hdr.return_code) {
 306                 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
 307                           "Continuing\n", cmd->data.setdelvlan.vlan_id,
 308                           QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 309                 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
 310                 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
 311         }
 312         return 0;
 313 }
 314
 315 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
 316                                 enum qeth_ipa_cmds ipacmd)
 317 {
 318         struct qeth_ipa_cmd *cmd;
 319         struct qeth_cmd_buffer *iob;
 320
 321         QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
 322         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 323         if (!iob)
 324                 return -ENOMEM;
 325         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 326         cmd->data.setdelvlan.vlan_id = i;
 327         return qeth_send_ipa_cmd(card, iob,
 328                                  qeth_l2_send_setdelvlan_cb, NULL);
 329 }
 330
 331 static void qeth_l2_process_vlans(struct qeth_card *card)
 332 {
 333         struct qeth_vlan_vid *id;
 334         QETH_CARD_TEXT(card, 3, "L2prcvln");
 335         spin_lock_bh(&card->vlanlock);
 336         list_for_each_entry(id, &card->vid_list, list) {
 337                 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
 338         }
 339         spin_unlock_bh(&card->vlanlock);
 340 }
 341
 342 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
 343                                    __be16 proto, u16 vid)
 344 {
 345         struct qeth_card *card = dev->ml_priv;
 346         struct qeth_vlan_vid *id;
 347         int rc;
 348
 349         QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
 350         if (!vid)
 351                 return 0;
 352         if (card->info.type == QETH_CARD_TYPE_OSM) {
 353                 QETH_CARD_TEXT(card, 3, "aidOSM");
 354                 return 0;
 355         }
 356         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 357                 QETH_CARD_TEXT(card, 3, "aidREC");
 358                 return 0;
 359         }
 360         id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
 361         if (id) {
 362                 id->vid = vid;
 363                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
 364                 if (rc) {
 365                         kfree(id);
 366                         return rc;
 367                 }
 368                 spin_lock_bh(&card->vlanlock);
 369                 list_add_tail(&id->list, &card->vid_list);
 370                 spin_unlock_bh(&card->vlanlock);
 371         } else {
 372                 return -ENOMEM;
 373         }
 374         return 0;
 375 }
 376
 377 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
 378                                     __be16 proto, u16 vid)
 379 {
 380         struct qeth_vlan_vid *id, *tmpid = NULL;
 381         struct qeth_card *card = dev->ml_priv;
 382         int rc = 0;
 383
 384         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
 385         if (card->info.type == QETH_CARD_TYPE_OSM) {
 386                 QETH_CARD_TEXT(card, 3, "kidOSM");
 387                 return 0;
 388         }
 389         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 390                 QETH_CARD_TEXT(card, 3, "kidREC");
 391                 return 0;
 392         }
 393         spin_lock_bh(&card->vlanlock);
 394         list_for_each_entry(id, &card->vid_list, list) {
 395                 if (id->vid == vid) {
 396                         list_del(&id->list);
 397                         tmpid = id;
 398                         break;
 399                 }
 400         }
 401         spin_unlock_bh(&card->vlanlock);
 402         if (tmpid) {
 403                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
 404                 kfree(tmpid);
 405         }
 406         qeth_l2_set_multicast_list(card->dev);
 407         return rc;
 408 }
 409
 410 static netdev_features_t qeth_l2_fix_features(struct net_device *dev,
 411                                               netdev_features_t features)
 412 {
 413         struct qeth_card *card = dev->ml_priv;
 414
 415         QETH_DBF_TEXT(SETUP, 2, "fixfeat");
 416         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
 417                 features &= ~NETIF_F_IP_CSUM;
 418         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
 419                 features &= ~NETIF_F_RXCSUM;
 420         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
 421         return features;
 422 }
 423
 424 static int qeth_l2_set_features(struct net_device *dev,
 425                                 netdev_features_t features)
 426 {
 427         struct qeth_card *card = dev->ml_priv;
 428         netdev_features_t changed = dev->features ^ features;
 429
 430         QETH_DBF_TEXT(SETUP, 2, "setfeat");
 431         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
 432
 433         if (card->state == CARD_STATE_DOWN ||
 434             card->state == CARD_STATE_RECOVER)
 435                 return 0;
 436
 437         if (!(changed & NETIF_F_RXCSUM))
 438                 return 0;
 439         return qeth_set_rx_csum(card, features & NETIF_F_RXCSUM ? 1 : 0);
 440 }
 441
 442 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
 443 {
 444         QETH_DBF_TEXT(SETUP , 2, "stopcard");
 445         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 446
 447         qeth_set_allowed_threads(card, 0, 1);
 448         if (card->read.state == CH_STATE_UP &&
 449             card->write.state == CH_STATE_UP &&
 450             (card->state == CARD_STATE_UP)) {
 451                 if (recovery_mode &&
 452                     card->info.type != QETH_CARD_TYPE_OSN) {
 453                         qeth_l2_stop(card->dev);
 454                 } else {
 455                         rtnl_lock();
 456                         dev_close(card->dev);
 457                         rtnl_unlock();
 458                 }
 459                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 460                 card->state = CARD_STATE_SOFTSETUP;
 461         }
 462         if (card->state == CARD_STATE_SOFTSETUP) {
 463                 qeth_l2_del_all_mc(card, 0);
 464                 qeth_clear_ipacmd_list(card);
 465                 card->state = CARD_STATE_HARDSETUP;
 466         }
 467         if (card->state == CARD_STATE_HARDSETUP) {
 468                 qeth_qdio_clear_card(card, 0);
 469                 qeth_clear_qdio_buffers(card);
 470                 qeth_clear_working_pool_list(card);
 471                 card->state = CARD_STATE_DOWN;
 472         }
 473         if (card->state == CARD_STATE_DOWN) {
 474                 qeth_clear_cmd_buffers(&card->read);
 475                 qeth_clear_cmd_buffers(&card->write);
 476         }
 477 }
 478
 479 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
 480                                 int budget, int *done)
 481 {
 482         int work_done = 0;
 483         struct sk_buff *skb;
 484         struct qeth_hdr *hdr;
 485         unsigned int len;
 486
 487         *done = 0;
 488         WARN_ON_ONCE(!budget);
 489         while (budget) {
 490                 skb = qeth_core_get_next_skb(card,
 491                         &card->qdio.in_q->bufs[card->rx.b_index],
 492                         &card->rx.b_element, &card->rx.e_offset, &hdr);
 493                 if (!skb) {
 494                         *done = 1;
 495                         break;
 496                 }
 497                 skb->dev = card->dev;
 498                 switch (hdr->hdr.l2.id) {
 499                 case QETH_HEADER_TYPE_LAYER2:
 500                         skb->pkt_type = PACKET_HOST;
 501                         skb->protocol = eth_type_trans(skb, skb->dev);
 502                         if ((card->dev->features & NETIF_F_RXCSUM)
 503                            && ((hdr->hdr.l2.flags[1] &
 504                                 (QETH_HDR_EXT_CSUM_HDR_REQ |
 505                                    QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
 506                                 (QETH_HDR_EXT_CSUM_HDR_REQ |
 507                                    QETH_HDR_EXT_CSUM_TRANSP_REQ)))
 508                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 509                         else
 510                                 skb->ip_summed = CHECKSUM_NONE;
 511                         if (skb->protocol == htons(ETH_P_802_2))
 512                                 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
 513                         len = skb->len;
 514                         netif_receive_skb(skb);
 515                         break;
 516                 case QETH_HEADER_TYPE_OSN:
 517                         if (card->info.type == QETH_CARD_TYPE_OSN) {
 518                                 skb_push(skb, sizeof(struct qeth_hdr));
 519                                 skb_copy_to_linear_data(skb, hdr,
 520                                                 sizeof(struct qeth_hdr));
 521                                 len = skb->len;
 522                                 card->osn_info.data_cb(skb);
 523                                 break;
 524                         }
 525                         /* else unknown */
 526                 default:
 527                         dev_kfree_skb_any(skb);
 528                         QETH_CARD_TEXT(card, 3, "inbunkno");
 529                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
 530                         continue;
 531                 }
 532                 work_done++;
 533                 budget--;
 534                 card->stats.rx_packets++;
 535                 card->stats.rx_bytes += len;
 536         }
 537         return work_done;
 538 }
 539
 540 static int qeth_l2_poll(struct napi_struct *napi, int budget)
 541 {
 542         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
 543         int work_done = 0;
 544         struct qeth_qdio_buffer *buffer;
 545         int done;
 546         int new_budget = budget;
 547
 548         if (card->options.performance_stats) {
 549                 card->perf_stats.inbound_cnt++;
 550                 card->perf_stats.inbound_start_time = qeth_get_micros();
 551         }
 552
 553         while (1) {
 554                 if (!card->rx.b_count) {
 555                         card->rx.qdio_err = 0;
 556                         card->rx.b_count = qdio_get_next_buffers(
 557                                 card->data.ccwdev, 0, &card->rx.b_index,
 558                                 &card->rx.qdio_err);
 559                         if (card->rx.b_count <= 0) {
 560                                 card->rx.b_count = 0;
 561                                 break;
 562                         }
 563                         card->rx.b_element =
 564                                 &card->qdio.in_q->bufs[card->rx.b_index]
 565                                 .buffer->element[0];
 566                         card->rx.e_offset = 0;
 567                 }
 568
 569                 while (card->rx.b_count) {
 570                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
 571                         if (!(card->rx.qdio_err &&
 572                             qeth_check_qdio_errors(card, buffer->buffer,
 573                             card->rx.qdio_err, "qinerr")))
 574                                 work_done += qeth_l2_process_inbound_buffer(
 575                                         card, new_budget, &done);
 576                         else
 577                                 done = 1;
 578
 579                         if (done) {
 580                                 if (card->options.performance_stats)
 581                                         card->perf_stats.bufs_rec++;
 582                                 qeth_put_buffer_pool_entry(card,
 583                                         buffer->pool_entry);
 584                                 qeth_queue_input_buffer(card, card->rx.b_index);
 585                                 card->rx.b_count--;
 586                                 if (card->rx.b_count) {
 587                                         card->rx.b_index =
 588                                                 (card->rx.b_index + 1) %
 589                                                 QDIO_MAX_BUFFERS_PER_Q;
 590                                         card->rx.b_element =
 591                                                 &card->qdio.in_q
 592                                                 ->bufs[card->rx.b_index]
 593                                                 .buffer->element[0];
 594                                         card->rx.e_offset = 0;
 595                                 }
 596                         }
 597
 598                         if (work_done >= budget)
 599                                 goto out;
 600                         else
 601                                 new_budget = budget - work_done;
 602                 }
 603         }
 604
 605         napi_complete(napi);
 606         if (qdio_start_irq(card->data.ccwdev, 0))
 607                 napi_schedule(&card->napi);
 608 out:
 609         if (card->options.performance_stats)
 610                 card->perf_stats.inbound_time += qeth_get_micros() -
 611                         card->perf_stats.inbound_start_time;
 612         return work_done;
 613 }
 614
 615 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
 616                            enum qeth_ipa_cmds ipacmd)
 617 {
 618         struct qeth_ipa_cmd *cmd;
 619         struct qeth_cmd_buffer *iob;
 620
 621         QETH_CARD_TEXT(card, 2, "L2sdmac");
 622         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 623         if (!iob)
 624                 return -ENOMEM;
 625         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 626         cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
 627         memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
 628         return qeth_send_ipa_cmd(card, iob, NULL, NULL);
 629 }
 630
 631 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
 632 {
 633         int rc;
 634
 635         QETH_CARD_TEXT(card, 2, "L2Setmac");
 636         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 637                                         IPA_CMD_SETVMAC));
 638         if (rc == 0) {
 639                 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 640                 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
 641                 dev_info(&card->gdev->dev,
 642                         "MAC address %pM successfully registered on device %s\n",
 643                         card->dev->dev_addr, card->dev->name);
 644         } else {
 645                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 646                 switch (rc) {
 647                 case -EEXIST:
 648                         dev_warn(&card->gdev->dev,
 649                                 "MAC address %pM already exists\n", mac);
 650                         break;
 651                 case -EPERM:
 652                         dev_warn(&card->gdev->dev,
 653                                 "MAC address %pM is not authorized\n", mac);
 654                         break;
 655                 }
 656         }
 657         return rc;
 658 }
 659
 660 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
 661 {
 662         int rc;
 663
 664         QETH_CARD_TEXT(card, 2, "L2Delmac");
 665         if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
 666                 return 0;
 667         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 668                                         IPA_CMD_DELVMAC));
 669         if (rc == 0)
 670                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 671         return rc;
 672 }
 673
 674 static int qeth_l2_request_initial_mac(struct qeth_card *card)
 675 {
 676         int rc = 0;
 677         char vendor_pre[] = {0x02, 0x00, 0x00};
 678
 679         QETH_DBF_TEXT(SETUP, 2, "doL2init");
 680         QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
 681
 682         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 683                 rc = qeth_query_setadapterparms(card);
 684                 if (rc) {
 685                         QETH_DBF_MESSAGE(2, "could not query adapter "
 686                                 "parameters on device %s: x%x\n",
 687                                 CARD_BUS_ID(card), rc);
 688                 }
 689         }
 690
 691         if (card->info.type == QETH_CARD_TYPE_IQD ||
 692             card->info.type == QETH_CARD_TYPE_OSM ||
 693             card->info.type == QETH_CARD_TYPE_OSX ||
 694             card->info.guestlan) {
 695                 rc = qeth_setadpparms_change_macaddr(card);
 696                 if (rc) {
 697                         QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
 698                                 "device %s: x%x\n", CARD_BUS_ID(card), rc);
 699                         QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
 700                         return rc;
 701                 }
 702                 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
 703         } else {
 704                 eth_random_addr(card->dev->dev_addr);
 705                 memcpy(card->dev->dev_addr, vendor_pre, 3);
 706         }
 707         return 0;
 708 }
 709
 710 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
 711 {
 712         struct sockaddr *addr = p;
 713         struct qeth_card *card = dev->ml_priv;
 714         int rc = 0;
 715
 716         QETH_CARD_TEXT(card, 3, "setmac");
 717
 718         if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
 719                 QETH_CARD_TEXT(card, 3, "setmcINV");
 720                 return -EOPNOTSUPP;
 721         }
 722
 723         if (card->info.type == QETH_CARD_TYPE_OSN ||
 724             card->info.type == QETH_CARD_TYPE_OSM ||
 725             card->info.type == QETH_CARD_TYPE_OSX) {
 726                 QETH_CARD_TEXT(card, 3, "setmcTYP");
 727                 return -EOPNOTSUPP;
 728         }
 729         QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
 730         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 731                 QETH_CARD_TEXT(card, 3, "setmcREC");
 732                 return -ERESTARTSYS;
 733         }
 734         rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
 735         if (!rc || (rc == -ENOENT))
 736                 rc = qeth_l2_send_setmac(card, addr->sa_data);
 737         return rc ? -EINVAL : 0;
 738 }
 739
 740 static void qeth_promisc_to_bridge(struct qeth_card *card)
 741 {
 742         struct net_device *dev = card->dev;
 743         enum qeth_ipa_promisc_modes promisc_mode;
 744         int role;
 745         int rc;
 746
 747         QETH_CARD_TEXT(card, 3, "pmisc2br");
 748
 749         if (!card->options.sbp.reflect_promisc)
 750                 return;
 751         promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
 752                                                 : SET_PROMISC_MODE_OFF;
 753         if (promisc_mode == card->info.promisc_mode)
 754                 return;
 755
 756         if (promisc_mode == SET_PROMISC_MODE_ON) {
 757                 if (card->options.sbp.reflect_promisc_primary)
 758                         role = QETH_SBP_ROLE_PRIMARY;
 759                 else
 760                         role = QETH_SBP_ROLE_SECONDARY;
 761         } else
 762                 role = QETH_SBP_ROLE_NONE;
 763
 764         rc = qeth_bridgeport_setrole(card, role);
 765         QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
 766                         (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
 767         if (!rc) {
 768                 card->options.sbp.role = role;
 769                 card->info.promisc_mode = promisc_mode;
 770         }
 771 }
 772
 773 static void qeth_l2_set_multicast_list(struct net_device *dev)
 774 {
 775         struct qeth_card *card = dev->ml_priv;
 776         struct netdev_hw_addr *ha;
 777
 778         if (card->info.type == QETH_CARD_TYPE_OSN)
 779                 return ;
 780
 781         QETH_CARD_TEXT(card, 3, "setmulti");
 782         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
 783             (card->state != CARD_STATE_UP))
 784                 return;
 785         qeth_l2_del_all_mc(card, 1);
 786         spin_lock_bh(&card->mclock);
 787         netdev_for_each_mc_addr(ha, dev)
 788                 qeth_l2_add_mc(card, ha->addr, 0);
 789
 790         netdev_for_each_uc_addr(ha, dev)
 791                 qeth_l2_add_mc(card, ha->addr, 1);
 792
 793         spin_unlock_bh(&card->mclock);
 794         if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 795                 qeth_setadp_promisc_mode(card);
 796         else
 797                 qeth_promisc_to_bridge(card);
 798 }
 799
 800 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 801 {
 802         int rc;
 803         struct qeth_hdr *hdr = NULL;
 804         int elements = 0;
 805         struct qeth_card *card = dev->ml_priv;
 806         struct sk_buff *new_skb = skb;
 807         int cast_type = qeth_l2_get_cast_type(card, skb);
 808         struct qeth_qdio_out_q *queue;
 809         int tx_bytes = skb->len;
 810         int data_offset = -1;
 811         int elements_needed = 0;
 812         int hd_len = 0;
 813
 814         if (card->qdio.do_prio_queueing || (cast_type &&
 815                                         card->info.is_multicast_different))
 816                 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
 817                                         qeth_get_ip_version(skb), cast_type)];
 818         else
 819                 queue = card->qdio.out_qs[card->qdio.default_out_queue];
 820
 821         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
 822                 card->stats.tx_carrier_errors++;
 823                 goto tx_drop;
 824         }
 825
 826         if ((card->info.type == QETH_CARD_TYPE_OSN) &&
 827             (skb->protocol == htons(ETH_P_IPV6)))
 828                 goto tx_drop;
 829
 830         if (card->options.performance_stats) {
 831                 card->perf_stats.outbound_cnt++;
 832                 card->perf_stats.outbound_start_time = qeth_get_micros();
 833         }
 834         netif_stop_queue(dev);
 835
 836         if (card->info.type == QETH_CARD_TYPE_OSN)
 837                 hdr = (struct qeth_hdr *)skb->data;
 838         else {
 839                 if (card->info.type == QETH_CARD_TYPE_IQD) {
 840                         new_skb = skb;
 841                         data_offset = ETH_HLEN;
 842                         hd_len = ETH_HLEN;
 843                         hdr = kmem_cache_alloc(qeth_core_header_cache,
 844                                                 GFP_ATOMIC);
 845                         if (!hdr)
 846                                 goto tx_drop;
 847                         elements_needed++;
 848                         skb_reset_mac_header(new_skb);
 849                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 850                         hdr->hdr.l2.pkt_length = new_skb->len;
 851                         memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
 852                                 skb_mac_header(new_skb), ETH_HLEN);
 853                 } else {
 854                         /* create a clone with writeable headroom */
 855                         new_skb = skb_realloc_headroom(skb,
 856                                                 sizeof(struct qeth_hdr));
 857                         if (!new_skb)
 858                                 goto tx_drop;
 859                         hdr = (struct qeth_hdr *)skb_push(new_skb,
 860                                                 sizeof(struct qeth_hdr));
 861                         skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
 862                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 863                         if (new_skb->ip_summed == CHECKSUM_PARTIAL)
 864                                 qeth_l2_hdr_csum(card, hdr, new_skb);
 865                 }
 866         }
 867
 868         elements = qeth_get_elements_no(card, new_skb, elements_needed);
 869         if (!elements) {
 870                 if (data_offset >= 0)
 871                         kmem_cache_free(qeth_core_header_cache, hdr);
 872                 goto tx_drop;
 873         }
 874
 875         if (card->info.type != QETH_CARD_TYPE_IQD) {
 876                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
 877                     sizeof(struct qeth_hdr_layer2)))
 878                         goto tx_drop;
 879                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
 880                                          elements);
 881         } else
 882                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
 883                                         elements, data_offset, hd_len);
 884         if (!rc) {
 885                 card->stats.tx_packets++;
 886                 card->stats.tx_bytes += tx_bytes;
 887                 if (new_skb != skb)
 888                         dev_kfree_skb_any(skb);
 889                 rc = NETDEV_TX_OK;
 890         } else {
 891                 if (data_offset >= 0)
 892                         kmem_cache_free(qeth_core_header_cache, hdr);
 893
 894                 if (rc == -EBUSY) {
 895                         if (new_skb != skb)
 896                                 dev_kfree_skb_any(new_skb);
 897                         return NETDEV_TX_BUSY;
 898                 } else
 899                         goto tx_drop;
 900         }
 901
 902         netif_wake_queue(dev);
 903         if (card->options.performance_stats)
 904                 card->perf_stats.outbound_time += qeth_get_micros() -
 905                         card->perf_stats.outbound_start_time;
 906         return rc;
 907
 908 tx_drop:
 909         card->stats.tx_dropped++;
 910         card->stats.tx_errors++;
 911         if ((new_skb != skb) && new_skb)
 912                 dev_kfree_skb_any(new_skb);
 913         dev_kfree_skb_any(skb);
 914         netif_wake_queue(dev);
 915         return NETDEV_TX_OK;
 916 }
 917
 918 static int __qeth_l2_open(struct net_device *dev)
 919 {
 920         struct qeth_card *card = dev->ml_priv;
 921         int rc = 0;
 922
 923         QETH_CARD_TEXT(card, 4, "qethopen");
 924         if (card->state == CARD_STATE_UP)
 925                 return rc;
 926         if (card->state != CARD_STATE_SOFTSETUP)
 927                 return -ENODEV;
 928
 929         if ((card->info.type != QETH_CARD_TYPE_OSN) &&
 930              (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
 931                 QETH_CARD_TEXT(card, 4, "nomacadr");
 932                 return -EPERM;
 933         }
 934         card->data.state = CH_STATE_UP;
 935         card->state = CARD_STATE_UP;
 936         netif_start_queue(dev);
 937
 938         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
 939                 napi_enable(&card->napi);
 940                 napi_schedule(&card->napi);
 941         } else
 942                 rc = -EIO;
 943         return rc;
 944 }
 945
 946 static int qeth_l2_open(struct net_device *dev)
 947 {
 948         struct qeth_card *card = dev->ml_priv;
 949
 950         QETH_CARD_TEXT(card, 5, "qethope_");
 951         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 952                 QETH_CARD_TEXT(card, 3, "openREC");
 953                 return -ERESTARTSYS;
 954         }
 955         return __qeth_l2_open(dev);
 956 }
 957
 958 static int qeth_l2_stop(struct net_device *dev)
 959 {
 960         struct qeth_card *card = dev->ml_priv;
 961
 962         QETH_CARD_TEXT(card, 4, "qethstop");
 963         netif_tx_disable(dev);
 964         if (card->state == CARD_STATE_UP) {
 965                 card->state = CARD_STATE_SOFTSETUP;
 966                 napi_disable(&card->napi);
 967         }
 968         return 0;
 969 }
 970
 971 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
 972 {
 973         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 974
 975         qeth_l2_create_device_attributes(&gdev->dev);
 976         INIT_LIST_HEAD(&card->vid_list);
 977         INIT_LIST_HEAD(&card->mc_list);
 978         card->options.layer2 = 1;
 979         card->info.hwtrap = 0;
 980         return 0;
 981 }
 982
 983 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
 984 {
 985         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
 986
 987         qeth_l2_remove_device_attributes(&cgdev->dev);
 988         qeth_set_allowed_threads(card, 0, 1);
 989         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
 990
 991         if (cgdev->state == CCWGROUP_ONLINE)
 992                 qeth_l2_set_offline(cgdev);
 993
 994         if (card->dev) {
 995                 unregister_netdev(card->dev);
 996                 card->dev = NULL;
 997         }
 998         return;
 999 }
1000
1001 static const struct ethtool_ops qeth_l2_ethtool_ops = {
1002         .get_link = ethtool_op_get_link,
1003         .get_strings = qeth_core_get_strings,
1004         .get_ethtool_stats = qeth_core_get_ethtool_stats,
1005         .get_sset_count = qeth_core_get_sset_count,
1006         .get_drvinfo = qeth_core_get_drvinfo,
1007         .get_settings = qeth_core_ethtool_get_settings,
1008 };
1009
1010 static const struct ethtool_ops qeth_l2_osn_ops = {
1011         .get_strings = qeth_core_get_strings,
1012         .get_ethtool_stats = qeth_core_get_ethtool_stats,
1013         .get_sset_count = qeth_core_get_sset_count,
1014         .get_drvinfo = qeth_core_get_drvinfo,
1015 };
1016
1017 static const struct net_device_ops qeth_l2_netdev_ops = {
1018         .ndo_open               = qeth_l2_open,
1019         .ndo_stop               = qeth_l2_stop,
1020         .ndo_get_stats          = qeth_get_stats,
1021         .ndo_start_xmit         = qeth_l2_hard_start_xmit,
1022         .ndo_validate_addr      = eth_validate_addr,
1023         .ndo_set_rx_mode        = qeth_l2_set_multicast_list,
1024         .ndo_do_ioctl           = qeth_l2_do_ioctl,
1025         .ndo_set_mac_address    = qeth_l2_set_mac_address,
1026         .ndo_change_mtu         = qeth_change_mtu,
1027         .ndo_vlan_rx_add_vid    = qeth_l2_vlan_rx_add_vid,
1028         .ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
1029         .ndo_tx_timeout         = qeth_tx_timeout,
1030         .ndo_fix_features       = qeth_l2_fix_features,
1031         .ndo_set_features       = qeth_l2_set_features
1032 };
1033
1034 static int qeth_l2_setup_netdev(struct qeth_card *card)
1035 {
1036         switch (card->info.type) {
1037         case QETH_CARD_TYPE_IQD:
1038                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1039                                          ether_setup);
1040                 break;
1041         case QETH_CARD_TYPE_OSN:
1042                 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1043                                          ether_setup);
1044                 card->dev->flags |= IFF_NOARP;
1045                 break;
1046         default:
1047                 card->dev = alloc_etherdev(0);
1048         }
1049
1050         if (!card->dev)
1051                 return -ENODEV;
1052
1053         card->dev->ml_priv = card;
1054         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
1055         card->dev->mtu = card->info.initial_mtu;
1056         card->dev->netdev_ops = &qeth_l2_netdev_ops;
1057         card->dev->ethtool_ops =
1058                 (card->info.type != QETH_CARD_TYPE_OSN) ?
1059                 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
1060         card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1061         if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
1062                 card->dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
1063                 /* Turn on RX offloading per default */
1064                 card->dev->features |= NETIF_F_RXCSUM;
1065         }
1066         card->info.broadcast_capable = 1;
1067         qeth_l2_request_initial_mac(card);
1068         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1069         netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1070         return register_netdev(card->dev);
1071 }
1072
1073 static int qeth_l2_start_ipassists(struct qeth_card *card)
1074 {
1075         /* configure isolation level */
1076         if (qeth_set_access_ctrl_online(card, 0))
1077                 return -ENODEV;
1078         if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
1079                 qeth_set_rx_csum(card, 1);
1080         qeth_start_ipa_tx_checksum(card);
1081         return 0;
1082 }
1083
1084 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1085 {
1086         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1087         int rc = 0;
1088         enum qeth_card_states recover_flag;
1089
1090         mutex_lock(&card->discipline_mutex);
1091         mutex_lock(&card->conf_mutex);
1092         QETH_DBF_TEXT(SETUP, 2, "setonlin");
1093         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1094
1095         recover_flag = card->state;
1096         rc = qeth_core_hardsetup_card(card);
1097         if (rc) {
1098                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1099                 rc = -ENODEV;
1100                 goto out_remove;
1101         }
1102         qeth_bridgeport_query_support(card);
1103         if (card->options.sbp.supported_funcs)
1104                 dev_info(&card->gdev->dev,
1105                 "The device represents a Bridge Capable Port\n");
1106         qeth_trace_features(card);
1107
1108         if (!card->dev && qeth_l2_setup_netdev(card)) {
1109                 rc = -ENODEV;
1110                 goto out_remove;
1111         }
1112
1113         if (card->info.type != QETH_CARD_TYPE_OSN)
1114                 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1115
1116         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1117                 if (card->info.hwtrap &&
1118                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1119                         card->info.hwtrap = 0;
1120         } else
1121                 card->info.hwtrap = 0;
1122
1123         qeth_l2_setup_bridgeport_attrs(card);
1124
1125         card->state = CARD_STATE_HARDSETUP;
1126         memset(&card->rx, 0, sizeof(struct qeth_rx));
1127         qeth_print_status_message(card);
1128
1129         /* softsetup */
1130         QETH_DBF_TEXT(SETUP, 2, "softsetp");
1131
1132         rc = qeth_send_startlan(card);
1133         if (rc) {
1134                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1135                 if (rc == 0xe080) {
1136                         dev_warn(&card->gdev->dev,
1137                                 "The LAN is offline\n");
1138                         card->lan_online = 0;
1139                         goto contin;
1140                 }
1141                 rc = -ENODEV;
1142                 goto out_remove;
1143         } else
1144                 card->lan_online = 1;
1145
1146 contin:
1147         if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1148             (card->info.type == QETH_CARD_TYPE_OSX)) {
1149                 if (qeth_l2_start_ipassists(card))
1150                         goto out_remove;
1151         }
1152
1153         if (card->info.type != QETH_CARD_TYPE_OSN &&
1154             card->info.type != QETH_CARD_TYPE_OSM)
1155                 qeth_l2_process_vlans(card);
1156
1157         netif_tx_disable(card->dev);
1158
1159         rc = qeth_init_qdio_queues(card);
1160         if (rc) {
1161                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1162                 rc = -ENODEV;
1163                 goto out_remove;
1164         }
1165         card->state = CARD_STATE_SOFTSETUP;
1166         if (card->lan_online)
1167                 netif_carrier_on(card->dev);
1168         else
1169                 netif_carrier_off(card->dev);
1170
1171         qeth_set_allowed_threads(card, 0xffffffff, 0);
1172         if (recover_flag == CARD_STATE_RECOVER) {
1173                 if (recovery_mode &&
1174                     card->info.type != QETH_CARD_TYPE_OSN) {
1175                         __qeth_l2_open(card->dev);
1176                 } else {
1177                         rtnl_lock();
1178                         dev_open(card->dev);
1179                         rtnl_unlock();
1180                 }
1181                 /* this also sets saved unicast addresses */
1182                 qeth_l2_set_multicast_list(card->dev);
1183         }
1184         /* let user_space know that device is online */
1185         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1186         mutex_unlock(&card->conf_mutex);
1187         mutex_unlock(&card->discipline_mutex);
1188         return 0;
1189
1190 out_remove:
1191         qeth_l2_stop_card(card, 0);
1192         ccw_device_set_offline(CARD_DDEV(card));
1193         ccw_device_set_offline(CARD_WDEV(card));
1194         ccw_device_set_offline(CARD_RDEV(card));
1195         qdio_free(CARD_DDEV(card));
1196         if (recover_flag == CARD_STATE_RECOVER)
1197                 card->state = CARD_STATE_RECOVER;
1198         else
1199                 card->state = CARD_STATE_DOWN;
1200         mutex_unlock(&card->conf_mutex);
1201         mutex_unlock(&card->discipline_mutex);
1202         return rc;
1203 }
1204
1205 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1206 {
1207         return __qeth_l2_set_online(gdev, 0);
1208 }
1209
1210 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1211                                         int recovery_mode)
1212 {
1213         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1214         int rc = 0, rc2 = 0, rc3 = 0;
1215         enum qeth_card_states recover_flag;
1216
1217         mutex_lock(&card->discipline_mutex);
1218         mutex_lock(&card->conf_mutex);
1219         QETH_DBF_TEXT(SETUP, 3, "setoffl");
1220         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1221
1222         if (card->dev && netif_carrier_ok(card->dev))
1223                 netif_carrier_off(card->dev);
1224         recover_flag = card->state;
1225         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1226                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1227                 card->info.hwtrap = 1;
1228         }
1229         qeth_l2_stop_card(card, recovery_mode);
1230         rc  = ccw_device_set_offline(CARD_DDEV(card));
1231         rc2 = ccw_device_set_offline(CARD_WDEV(card));
1232         rc3 = ccw_device_set_offline(CARD_RDEV(card));
1233         if (!rc)
1234                 rc = (rc2) ? rc2 : rc3;
1235         if (rc)
1236                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1237         qdio_free(CARD_DDEV(card));
1238         if (recover_flag == CARD_STATE_UP)
1239                 card->state = CARD_STATE_RECOVER;
1240         /* let user_space know that device is offline */
1241         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1242         mutex_unlock(&card->conf_mutex);
1243         mutex_unlock(&card->discipline_mutex);
1244         return 0;
1245 }
1246
1247 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1248 {
1249         return __qeth_l2_set_offline(cgdev, 0);
1250 }
1251
1252 static int qeth_l2_recover(void *ptr)
1253 {
1254         struct qeth_card *card;
1255         int rc = 0;
1256
1257         card = (struct qeth_card *) ptr;
1258         QETH_CARD_TEXT(card, 2, "recover1");
1259         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1260                 return 0;
1261         QETH_CARD_TEXT(card, 2, "recover2");
1262         dev_warn(&card->gdev->dev,
1263                 "A recovery process has been started for the device\n");
1264         qeth_set_recovery_task(card);
1265         __qeth_l2_set_offline(card->gdev, 1);
1266         rc = __qeth_l2_set_online(card->gdev, 1);
1267         if (!rc)
1268                 dev_info(&card->gdev->dev,
1269                         "Device successfully recovered!\n");
1270         else {
1271                 qeth_close_dev(card);
1272                 dev_warn(&card->gdev->dev, "The qeth device driver "
1273                                 "failed to recover an error on the device\n");
1274         }
1275         qeth_clear_recovery_task(card);
1276         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1277         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1278         return 0;
1279 }
1280
1281 static int __init qeth_l2_init(void)
1282 {
1283         pr_info("register layer 2 discipline\n");
1284         return 0;
1285 }
1286
1287 static void __exit qeth_l2_exit(void)
1288 {
1289         pr_info("unregister layer 2 discipline\n");
1290 }
1291
1292 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1293 {
1294         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1295         qeth_set_allowed_threads(card, 0, 1);
1296         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1297                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1298         qeth_qdio_clear_card(card, 0);
1299         qeth_clear_qdio_buffers(card);
1300         qdio_free(CARD_DDEV(card));
1301 }
1302
1303 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1304 {
1305         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1306
1307         if (card->dev)
1308                 netif_device_detach(card->dev);
1309         qeth_set_allowed_threads(card, 0, 1);
1310         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1311         if (gdev->state == CCWGROUP_OFFLINE)
1312                 return 0;
1313         if (card->state == CARD_STATE_UP) {
1314                 if (card->info.hwtrap)
1315                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1316                 __qeth_l2_set_offline(card->gdev, 1);
1317         } else
1318                 __qeth_l2_set_offline(card->gdev, 0);
1319         return 0;
1320 }
1321
1322 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1323 {
1324         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1325         int rc = 0;
1326
1327         if (gdev->state == CCWGROUP_OFFLINE)
1328                 goto out;
1329
1330         if (card->state == CARD_STATE_RECOVER) {
1331                 rc = __qeth_l2_set_online(card->gdev, 1);
1332                 if (rc) {
1333                         rtnl_lock();
1334                         dev_close(card->dev);
1335                         rtnl_unlock();
1336                 }
1337         } else
1338                 rc = __qeth_l2_set_online(card->gdev, 0);
1339 out:
1340         qeth_set_allowed_threads(card, 0xffffffff, 0);
1341         if (card->dev)
1342                 netif_device_attach(card->dev);
1343         if (rc)
1344                 dev_warn(&card->gdev->dev, "The qeth device driver "
1345                         "failed to recover an error on the device\n");
1346         return rc;
1347 }
1348
1349 /* Returns zero if the command is successfully "consumed" */
1350 static int qeth_l2_control_event(struct qeth_card *card,
1351                                         struct qeth_ipa_cmd *cmd)
1352 {
1353         switch (cmd->hdr.command) {
1354         case IPA_CMD_SETBRIDGEPORT_OSA:
1355         case IPA_CMD_SETBRIDGEPORT_IQD:
1356                 if (cmd->data.sbp.hdr.command_code ==
1357                                 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1358                         qeth_bridge_state_change(card, cmd);
1359                         return 0;
1360                 } else
1361                         return 1;
1362         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1363                 qeth_bridge_host_event(card, cmd);
1364                 return 0;
1365         default:
1366                 return 1;
1367         }
1368 }
1369
1370 struct qeth_discipline qeth_l2_discipline = {
1371         .start_poll = qeth_qdio_start_poll,
1372         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1373         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1374         .recover = qeth_l2_recover,
1375         .setup = qeth_l2_probe_device,
1376         .remove = qeth_l2_remove_device,
1377         .set_online = qeth_l2_set_online,
1378         .set_offline = qeth_l2_set_offline,
1379         .shutdown = qeth_l2_shutdown,
1380         .freeze = qeth_l2_pm_suspend,
1381         .thaw = qeth_l2_pm_resume,
1382         .restore = qeth_l2_pm_resume,
1383         .control_event_handler = qeth_l2_control_event,
1384 };
1385 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1386
1387 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1388                            struct qeth_cmd_buffer *iob)
1389 {
1390         unsigned long flags;
1391         int rc = 0;
1392
1393         QETH_CARD_TEXT(card, 5, "osndctrd");
1394
1395         wait_event(card->wait_q,
1396                    atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1397         qeth_prepare_control_data(card, len, iob);
1398         QETH_CARD_TEXT(card, 6, "osnoirqp");
1399         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1400         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1401                               (addr_t) iob, 0, 0);
1402         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1403         if (rc) {
1404                 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1405                            "ccw_device_start rc = %i\n", rc);
1406                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1407                 qeth_release_buffer(iob->channel, iob);
1408                 atomic_set(&card->write.irq_pending, 0);
1409                 wake_up(&card->wait_q);
1410         }
1411         return rc;
1412 }
1413
1414 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1415                         struct qeth_cmd_buffer *iob, int data_len)
1416 {
1417         u16 s1, s2;
1418
1419         QETH_CARD_TEXT(card, 4, "osndipa");
1420
1421         qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1422         s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1423         s2 = (u16)data_len;
1424         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1425         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1426         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1427         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1428         return qeth_osn_send_control_data(card, s1, iob);
1429 }
1430
1431 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1432 {
1433         struct qeth_cmd_buffer *iob;
1434         struct qeth_card *card;
1435         int rc;
1436
1437         if (!dev)
1438                 return -ENODEV;
1439         card = dev->ml_priv;
1440         if (!card)
1441                 return -ENODEV;
1442         QETH_CARD_TEXT(card, 2, "osnsdmc");
1443         if (!qeth_card_hw_is_reachable(card))
1444                 return -ENODEV;
1445         iob = qeth_wait_for_buffer(&card->write);
1446         memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1447         rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1448         return rc;
1449 }
1450 EXPORT_SYMBOL(qeth_osn_assist);
1451
1452 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1453                   int (*assist_cb)(struct net_device *, void *),
1454                   int (*data_cb)(struct sk_buff *))
1455 {
1456         struct qeth_card *card;
1457
1458         *dev = qeth_l2_netdev_by_devno(read_dev_no);
1459         if (*dev == NULL)
1460                 return -ENODEV;
1461         card = (*dev)->ml_priv;
1462         if (!card)
1463                 return -ENODEV;
1464         QETH_CARD_TEXT(card, 2, "osnreg");
1465         if ((assist_cb == NULL) || (data_cb == NULL))
1466                 return -EINVAL;
1467         card->osn_info.assist_cb = assist_cb;
1468         card->osn_info.data_cb = data_cb;
1469         return 0;
1470 }
1471 EXPORT_SYMBOL(qeth_osn_register);
1472
1473 void qeth_osn_deregister(struct net_device *dev)
1474 {
1475         struct qeth_card *card;
1476
1477         if (!dev)
1478                 return;
1479         card = dev->ml_priv;
1480         if (!card)
1481                 return;
1482         QETH_CARD_TEXT(card, 2, "osndereg");
1483         card->osn_info.assist_cb = NULL;
1484         card->osn_info.data_cb = NULL;
1485         return;
1486 }
1487 EXPORT_SYMBOL(qeth_osn_deregister);
1488
1489 /* SETBRIDGEPORT support, async notifications */
1490
1491 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1492
1493 /**
1494  * qeth_bridge_emit_host_event() - bridgeport address change notification
1495  * @card:  qeth_card structure pointer, for udev events.
1496  * @evtype:  "normal" register/unregister, or abort, or reset. For abort
1497  *            and reset token and addr_lnid are unused and may be NULL.
1498  * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
1499  *                        object, 0 - addition of an object.
1500  *                        0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1501  * @token: "network token" structure identifying physical address of the port.
1502  * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1503  *
1504  * This function is called when registrations and deregistrations are
1505  * reported by the hardware, and also when notifications are enabled -
1506  * for all currently registered addresses.
1507  */
1508 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1509         enum qeth_an_event_type evtype,
1510         u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1511 {
1512         char str[7][32];
1513         char *env[8];
1514         int i = 0;
1515
1516         switch (evtype) {
1517         case anev_reg_unreg:
1518                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1519                                 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1520                                 ? "deregister" : "register");
1521                 env[i] = str[i]; i++;
1522                 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1523                         snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1524                                 addr_lnid->lnid);
1525                         env[i] = str[i]; i++;
1526                 }
1527                 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1528                         snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1529                                 addr_lnid->mac);
1530                         env[i] = str[i]; i++;
1531                 }
1532                 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1533                         token->cssid, token->ssid, token->devnum);
1534                 env[i] = str[i]; i++;
1535                 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1536                 env[i] = str[i]; i++;
1537                 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1538                                 token->chpid);
1539                 env[i] = str[i]; i++;
1540                 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1541                 env[i] = str[i]; i++;
1542                 break;
1543         case anev_abort:
1544                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1545                 env[i] = str[i]; i++;
1546                 break;
1547         case anev_reset:
1548                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1549                 env[i] = str[i]; i++;
1550                 break;
1551         }
1552         env[i] = NULL;
1553         kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1554 }
1555
1556 struct qeth_bridge_state_data {
1557         struct work_struct worker;
1558         struct qeth_card *card;
1559         struct qeth_sbp_state_change qports;
1560 };
1561
1562 static void qeth_bridge_state_change_worker(struct work_struct *work)
1563 {
1564         struct qeth_bridge_state_data *data =
1565                 container_of(work, struct qeth_bridge_state_data, worker);
1566         /* We are only interested in the first entry - local port */
1567         struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1568         char env_locrem[32];
1569         char env_role[32];
1570         char env_state[32];
1571         char *env[] = {
1572                 env_locrem,
1573                 env_role,
1574                 env_state,
1575                 NULL
1576         };
1577
1578         /* Role should not change by itself, but if it did, */
1579         /* information from the hardware is authoritative.  */
1580         mutex_lock(&data->card->conf_mutex);
1581         data->card->options.sbp.role = entry->role;
1582         mutex_unlock(&data->card->conf_mutex);
1583
1584         snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1585         snprintf(env_role, sizeof(env_role), "ROLE=%s",
1586                 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1587                 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1588                 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1589                 "<INVALID>");
1590         snprintf(env_state, sizeof(env_state), "STATE=%s",
1591                 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1592                 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1593                 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1594                 "<INVALID>");
1595         kobject_uevent_env(&data->card->gdev->dev.kobj,
1596                                 KOBJ_CHANGE, env);
1597         kfree(data);
1598 }
1599
1600 static void qeth_bridge_state_change(struct qeth_card *card,
1601                                         struct qeth_ipa_cmd *cmd)
1602 {
1603         struct qeth_sbp_state_change *qports =
1604                  &cmd->data.sbp.data.state_change;
1605         struct qeth_bridge_state_data *data;
1606         int extrasize;
1607
1608         QETH_CARD_TEXT(card, 2, "brstchng");
1609         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1610                 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1611                 return;
1612         }
1613         extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1614         data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1615                 GFP_ATOMIC);
1616         if (!data) {
1617                 QETH_CARD_TEXT(card, 2, "BPSalloc");
1618                 return;
1619         }
1620         INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1621         data->card = card;
1622         memcpy(&data->qports, qports,
1623                         sizeof(struct qeth_sbp_state_change) + extrasize);
1624         queue_work(qeth_wq, &data->worker);
1625 }
1626
1627 struct qeth_bridge_host_data {
1628         struct work_struct worker;
1629         struct qeth_card *card;
1630         struct qeth_ipacmd_addr_change hostevs;
1631 };
1632
1633 static void qeth_bridge_host_event_worker(struct work_struct *work)
1634 {
1635         struct qeth_bridge_host_data *data =
1636                 container_of(work, struct qeth_bridge_host_data, worker);
1637         int i;
1638
1639         if (data->hostevs.lost_event_mask) {
1640                 dev_info(&data->card->gdev->dev,
1641 "Address notification from the Bridge Port stopped %s (%s)\n",
1642                         data->card->dev->name,
1643                         (data->hostevs.lost_event_mask == 0x01)
1644                         ? "Overflow"
1645                         : (data->hostevs.lost_event_mask == 0x02)
1646                         ? "Bridge port state change"
1647                         : "Unknown reason");
1648                 mutex_lock(&data->card->conf_mutex);
1649                 data->card->options.sbp.hostnotification = 0;
1650                 mutex_unlock(&data->card->conf_mutex);
1651                 qeth_bridge_emit_host_event(data->card, anev_abort,
1652                         0, NULL, NULL);
1653         } else
1654                 for (i = 0; i < data->hostevs.num_entries; i++) {
1655                         struct qeth_ipacmd_addr_change_entry *entry =
1656                                         &data->hostevs.entry[i];
1657                         qeth_bridge_emit_host_event(data->card,
1658                                         anev_reg_unreg,
1659                                         entry->change_code,
1660                                         &entry->token, &entry->addr_lnid);
1661                 }
1662         kfree(data);
1663 }
1664
1665 static void qeth_bridge_host_event(struct qeth_card *card,
1666                                         struct qeth_ipa_cmd *cmd)
1667 {
1668         struct qeth_ipacmd_addr_change *hostevs =
1669                  &cmd->data.addrchange;
1670         struct qeth_bridge_host_data *data;
1671         int extrasize;
1672
1673         QETH_CARD_TEXT(card, 2, "brhostev");
1674         if (cmd->hdr.return_code != 0x0000) {
1675                 if (cmd->hdr.return_code == 0x0010) {
1676                         if (hostevs->lost_event_mask == 0x00)
1677                                 hostevs->lost_event_mask = 0xff;
1678                 } else {
1679                         QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1680                                 cmd->hdr.return_code);
1681                         return;
1682                 }
1683         }
1684         extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1685                                                 hostevs->num_entries;
1686         data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1687                 GFP_ATOMIC);
1688         if (!data) {
1689                 QETH_CARD_TEXT(card, 2, "BPHalloc");
1690                 return;
1691         }
1692         INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1693         data->card = card;
1694         memcpy(&data->hostevs, hostevs,
1695                         sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1696         queue_work(qeth_wq, &data->worker);
1697 }
1698
1699 /* SETBRIDGEPORT support; sending commands */
1700
1701 struct _qeth_sbp_cbctl {
1702         u16 ipa_rc;
1703         u16 cmd_rc;
1704         union {
1705                 u32 supported;
1706                 struct {
1707                         enum qeth_sbp_roles *role;
1708                         enum qeth_sbp_states *state;
1709                 } qports;
1710         } data;
1711 };
1712
1713 /**
1714  * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1715  * @card:                     qeth_card structure pointer, for debug messages.
1716  * @cbctl:                    state structure with hardware return codes.
1717  * @setcmd:                   IPA command code
1718  *
1719  * Returns negative errno-compatible error indication or 0 on success.
1720  */
1721 static int qeth_bridgeport_makerc(struct qeth_card *card,
1722         struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1723 {
1724         int rc;
1725         int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1726
1727         if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1728             (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1729                 switch (cbctl->cmd_rc) {
1730                 case 0x0000:
1731                         rc = 0;
1732                         break;
1733                 case 0x2B04:
1734                 case 0x0004:
1735                         rc = -EOPNOTSUPP;
1736                         break;
1737                 case 0x2B0C:
1738                 case 0x000C: /* Not configured as bridge Port */
1739                         rc = -ENODEV; /* maybe not the best code here? */
1740                         dev_err(&card->gdev->dev,
1741         "The device is not configured as a Bridge Port\n");
1742                         break;
1743                 case 0x2B14:
1744                 case 0x0014: /* Another device is Primary */
1745                         switch (setcmd) {
1746                         case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1747                                 rc = -EEXIST;
1748                                 dev_err(&card->gdev->dev,
1749         "The LAN already has a primary Bridge Port\n");
1750                                 break;
1751                         case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1752                                 rc = -EBUSY;
1753                                 dev_err(&card->gdev->dev,
1754         "The device is already a primary Bridge Port\n");
1755                                 break;
1756                         default:
1757                                 rc = -EIO;
1758                         }
1759                         break;
1760                 case 0x2B18:
1761                 case 0x0018: /* This device is currently Secondary */
1762                         rc = -EBUSY;
1763                         dev_err(&card->gdev->dev,
1764         "The device is already a secondary Bridge Port\n");
1765                         break;
1766                 case 0x2B1C:
1767                 case 0x001C: /* Limit for Secondary devices reached */
1768                         rc = -EEXIST;
1769                         dev_err(&card->gdev->dev,
1770         "The LAN cannot have more secondary Bridge Ports\n");
1771                         break;
1772                 case 0x2B24:
1773                 case 0x0024: /* This device is currently Primary */
1774                         rc = -EBUSY;
1775                         dev_err(&card->gdev->dev,
1776         "The device is already a primary Bridge Port\n");
1777                         break;
1778                 case 0x2B20:
1779                 case 0x0020: /* Not authorized by zManager */
1780                         rc = -EACCES;
1781                         dev_err(&card->gdev->dev,
1782         "The device is not authorized to be a Bridge Port\n");
1783                         break;
1784                 default:
1785                         rc = -EIO;
1786                 }
1787         else
1788                 switch (cbctl->ipa_rc) {
1789                 case IPA_RC_NOTSUPP:
1790                         rc = -EOPNOTSUPP;
1791                         break;
1792                 case IPA_RC_UNSUPPORTED_COMMAND:
1793                         rc = -EOPNOTSUPP;
1794                         break;
1795                 default:
1796                         rc = -EIO;
1797                 }
1798
1799         if (rc) {
1800                 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1801                 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1802         }
1803         return rc;
1804 }
1805
1806 static inline int ipa_cmd_sbp(struct qeth_card *card)
1807 {
1808         return (card->info.type == QETH_CARD_TYPE_IQD) ?
1809                 IPA_CMD_SETBRIDGEPORT_IQD :
1810                 IPA_CMD_SETBRIDGEPORT_OSA;
1811 }
1812
1813 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1814         struct qeth_reply *reply, unsigned long data)
1815 {
1816         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1817         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1818         QETH_CARD_TEXT(card, 2, "brqsupcb");
1819         cbctl->ipa_rc = cmd->hdr.return_code;
1820         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1821         if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1822                 cbctl->data.supported =
1823                         cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1824         } else {
1825                 cbctl->data.supported = 0;
1826         }
1827         return 0;
1828 }
1829
1830 /**
1831  * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1832  * @card:                            qeth_card structure pointer.
1833  *
1834  * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1835  * strucutre: card->options.sbp.supported_funcs.
1836  */
1837 static void qeth_bridgeport_query_support(struct qeth_card *card)
1838 {
1839         struct qeth_cmd_buffer *iob;
1840         struct qeth_ipa_cmd *cmd;
1841         struct _qeth_sbp_cbctl cbctl;
1842
1843         QETH_CARD_TEXT(card, 2, "brqsuppo");
1844         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1845         if (!iob)
1846                 return;
1847         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1848         cmd->data.sbp.hdr.cmdlength =
1849                 sizeof(struct qeth_ipacmd_sbp_hdr) +
1850                 sizeof(struct qeth_sbp_query_cmds_supp);
1851         cmd->data.sbp.hdr.command_code =
1852                 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1853         cmd->data.sbp.hdr.used_total = 1;
1854         cmd->data.sbp.hdr.seq_no = 1;
1855         if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1856                                                         (void *)&cbctl) ||
1857             qeth_bridgeport_makerc(card, &cbctl,
1858                                         IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1859                 /* non-zero makerc signifies failure, and produce messages */
1860                 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1861                 return;
1862         }
1863         card->options.sbp.supported_funcs = cbctl.data.supported;
1864 }
1865
1866 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1867         struct qeth_reply *reply, unsigned long data)
1868 {
1869         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1870         struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1871         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1872
1873         QETH_CARD_TEXT(card, 2, "brqprtcb");
1874         cbctl->ipa_rc = cmd->hdr.return_code;
1875         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1876         if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1877                 return 0;
1878         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1879                 cbctl->cmd_rc = 0xffff;
1880                 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1881                 return 0;
1882         }
1883         /* first entry contains the state of the local port */
1884         if (qports->num_entries > 0) {
1885                 if (cbctl->data.qports.role)
1886                         *cbctl->data.qports.role = qports->entry[0].role;
1887                 if (cbctl->data.qports.state)
1888                         *cbctl->data.qports.state = qports->entry[0].state;
1889         }
1890         return 0;
1891 }
1892
1893 /**
1894  * qeth_bridgeport_query_ports() - query local bridgeport status.
1895  * @card:                          qeth_card structure pointer.
1896  * @role:   Role of the port: 0-none, 1-primary, 2-secondary.
1897  * @state:  State of the port: 0-inactive, 1-standby, 2-active.
1898  *
1899  * Returns negative errno-compatible error indication or 0 on success.
1900  *
1901  * 'role' and 'state' are not updated in case of hardware operation failure.
1902  */
1903 int qeth_bridgeport_query_ports(struct qeth_card *card,
1904         enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1905 {
1906         int rc = 0;
1907         struct qeth_cmd_buffer *iob;
1908         struct qeth_ipa_cmd *cmd;
1909         struct _qeth_sbp_cbctl cbctl = {
1910                 .data = {
1911                         .qports = {
1912                                 .role = role,
1913                                 .state = state,
1914                         },
1915                 },
1916         };
1917
1918         QETH_CARD_TEXT(card, 2, "brqports");
1919         if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1920                 return -EOPNOTSUPP;
1921         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1922         if (!iob)
1923                 return -ENOMEM;
1924         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1925         cmd->data.sbp.hdr.cmdlength =
1926                 sizeof(struct qeth_ipacmd_sbp_hdr);
1927         cmd->data.sbp.hdr.command_code =
1928                 IPA_SBP_QUERY_BRIDGE_PORTS;
1929         cmd->data.sbp.hdr.used_total = 1;
1930         cmd->data.sbp.hdr.seq_no = 1;
1931         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1932                                 (void *)&cbctl);
1933         if (rc < 0)
1934                 return rc;
1935         return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1936 }
1937 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1938
1939 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1940         struct qeth_reply *reply, unsigned long data)
1941 {
1942         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1943         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1944         QETH_CARD_TEXT(card, 2, "brsetrcb");
1945         cbctl->ipa_rc = cmd->hdr.return_code;
1946         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1947         return 0;
1948 }
1949
1950 /**
1951  * qeth_bridgeport_setrole() - Assign primary role to the port.
1952  * @card:                      qeth_card structure pointer.
1953  * @role:                      Role to assign.
1954  *
1955  * Returns negative errno-compatible error indication or 0 on success.
1956  */
1957 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1958 {
1959         int rc = 0;
1960         int cmdlength;
1961         struct qeth_cmd_buffer *iob;
1962         struct qeth_ipa_cmd *cmd;
1963         struct _qeth_sbp_cbctl cbctl;
1964         enum qeth_ipa_sbp_cmd setcmd;
1965
1966         QETH_CARD_TEXT(card, 2, "brsetrol");
1967         switch (role) {
1968         case QETH_SBP_ROLE_NONE:
1969                 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1970                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1971                         sizeof(struct qeth_sbp_reset_role);
1972                 break;
1973         case QETH_SBP_ROLE_PRIMARY:
1974                 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1975                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1976                         sizeof(struct qeth_sbp_set_primary);
1977                 break;
1978         case QETH_SBP_ROLE_SECONDARY:
1979                 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1980                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
1981                         sizeof(struct qeth_sbp_set_secondary);
1982                 break;
1983         default:
1984                 return -EINVAL;
1985         }
1986         if (!(card->options.sbp.supported_funcs & setcmd))
1987                 return -EOPNOTSUPP;
1988         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1989         if (!iob)
1990                 return -ENOMEM;
1991         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1992         cmd->data.sbp.hdr.cmdlength = cmdlength;
1993         cmd->data.sbp.hdr.command_code = setcmd;
1994         cmd->data.sbp.hdr.used_total = 1;
1995         cmd->data.sbp.hdr.seq_no = 1;
1996         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1997                                 (void *)&cbctl);
1998         if (rc < 0)
1999                 return rc;
2000         return qeth_bridgeport_makerc(card, &cbctl, setcmd);
2001 }
2002
2003 /**
2004  * qeth_anset_makerc() - derive "traditional" error from hardware codes.
2005  * @card:                     qeth_card structure pointer, for debug messages.
2006  *
2007  * Returns negative errno-compatible error indication or 0 on success.
2008  */
2009 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
2010 {
2011         int rc;
2012
2013         if (pnso_rc == 0)
2014                 switch (response) {
2015                 case 0x0001:
2016                         rc = 0;
2017                         break;
2018                 case 0x0004:
2019                 case 0x0100:
2020                 case 0x0106:
2021                         rc = -EOPNOTSUPP;
2022                         dev_err(&card->gdev->dev,
2023                                 "Setting address notification failed\n");
2024                         break;
2025                 case 0x0107:
2026                         rc = -EAGAIN;
2027                         break;
2028                 default:
2029                         rc = -EIO;
2030                 }
2031         else
2032                 rc = -EIO;
2033
2034         if (rc) {
2035                 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2036                 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2037         }
2038         return rc;
2039 }
2040
2041 static void qeth_bridgeport_an_set_cb(void *priv,
2042                 enum qdio_brinfo_entry_type type, void *entry)
2043 {
2044         struct qeth_card *card = (struct qeth_card *)priv;
2045         struct qdio_brinfo_entry_l2 *l2entry;
2046         u8 code;
2047
2048         if (type != l2_addr_lnid) {
2049                 WARN_ON_ONCE(1);
2050                 return;
2051         }
2052
2053         l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2054         code = IPA_ADDR_CHANGE_CODE_MACADDR;
2055         if (l2entry->addr_lnid.lnid)
2056                 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2057         qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2058                 (struct net_if_token *)&l2entry->nit,
2059                 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2060 }
2061
2062 /**
2063  * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2064  * @card:                     qeth_card structure pointer.
2065  * @enable:                   0 - disable, non-zero - enable notifications
2066  *
2067  * Returns negative errno-compatible error indication or 0 on success.
2068  *
2069  * On enable, emits a series of address notifications udev events for all
2070  * currently registered hosts.
2071  */
2072 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2073 {
2074         int rc;
2075         u16 response;
2076         struct ccw_device *ddev;
2077         struct subchannel_id schid;
2078
2079         if (!card)
2080                 return -EINVAL;
2081         if (!card->options.sbp.supported_funcs)
2082                 return -EOPNOTSUPP;
2083         ddev = CARD_DDEV(card);
2084         ccw_device_get_schid(ddev, &schid);
2085
2086         if (enable) {
2087                 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2088                 rc = qdio_pnso_brinfo(schid, 1, &response,
2089                         qeth_bridgeport_an_set_cb, card);
2090         } else
2091                 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2092         return qeth_anset_makerc(card, rc, response);
2093 }
2094 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2095
2096 module_init(qeth_l2_init);
2097 module_exit(qeth_l2_exit);
2098 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2099 MODULE_DESCRIPTION("qeth layer 2 discipline");
2100 MODULE_LICENSE("GPL");