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/ip.h>
  20 #include <linux/list.h>
  21 #include <linux/hash.h>
  22 #include <linux/hashtable.h>
  23 #include <linux/string.h>
  24 #include <asm/setup.h>
  25 #include "qeth_core.h"
  26 #include "qeth_l2.h"
  27
  28 static int qeth_l2_set_offline(struct ccwgroup_device *);
  29 static int qeth_l2_stop(struct net_device *);
  30 static void qeth_l2_set_rx_mode(struct net_device *);
  31 static void qeth_bridgeport_query_support(struct qeth_card *card);
  32 static void qeth_bridge_state_change(struct qeth_card *card,
  33                                         struct qeth_ipa_cmd *cmd);
  34 static void qeth_bridge_host_event(struct qeth_card *card,
  35                                         struct qeth_ipa_cmd *cmd);
  36 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card);
  37 static void qeth_l2_vnicc_init(struct qeth_card *card);
  38 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
  39                                           u32 *timeout);
  40
  41 static int qeth_l2_verify_dev(struct net_device *dev)
  42 {
  43         struct qeth_card *card;
  44         unsigned long flags;
  45         int rc = 0;
  46
  47         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
  48         list_for_each_entry(card, &qeth_core_card_list.list, list) {
  49                 if (card->dev == dev) {
  50                         rc = QETH_REAL_CARD;
  51                         break;
  52                 }
  53         }
  54         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
  55
  56         return rc;
  57 }
  58
  59 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
  60 {
  61         struct qeth_card *card;
  62         struct net_device *ndev;
  63         __u16 temp_dev_no;
  64         unsigned long flags;
  65         struct ccw_dev_id read_devid;
  66
  67         ndev = NULL;
  68         memcpy(&temp_dev_no, read_dev_no, 2);
  69         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
  70         list_for_each_entry(card, &qeth_core_card_list.list, list) {
  71                 ccw_device_get_id(CARD_RDEV(card), &read_devid);
  72                 if (read_devid.devno == temp_dev_no) {
  73                         ndev = card->dev;
  74                         break;
  75                 }
  76         }
  77         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
  78         return ndev;
  79 }
  80
  81 static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode)
  82 {
  83         int rc;
  84
  85         if (retcode)
  86                 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
  87         switch (retcode) {
  88         case IPA_RC_SUCCESS:
  89                 rc = 0;
  90                 break;
  91         case IPA_RC_L2_UNSUPPORTED_CMD:
  92                 rc = -EOPNOTSUPP;
  93                 break;
  94         case IPA_RC_L2_ADDR_TABLE_FULL:
  95                 rc = -ENOSPC;
  96                 break;
  97         case IPA_RC_L2_DUP_MAC:
  98         case IPA_RC_L2_DUP_LAYER3_MAC:
  99                 rc = -EEXIST;
 100                 break;
 101         case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
 102         case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
 103                 rc = -EPERM;
 104                 break;
 105         case IPA_RC_L2_MAC_NOT_FOUND:
 106                 rc = -ENOENT;
 107                 break;
 108         case -ENOMEM:
 109                 rc = -ENOMEM;
 110                 break;
 111         default:
 112                 rc = -EIO;
 113                 break;
 114         }
 115         return rc;
 116 }
 117
 118 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
 119                            enum qeth_ipa_cmds ipacmd)
 120 {
 121         struct qeth_ipa_cmd *cmd;
 122         struct qeth_cmd_buffer *iob;
 123
 124         QETH_CARD_TEXT(card, 2, "L2sdmac");
 125         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 126         if (!iob)
 127                 return -ENOMEM;
 128         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 129         cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
 130         memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
 131         return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob,
 132                                            NULL, NULL));
 133 }
 134
 135 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
 136 {
 137         int rc;
 138
 139         QETH_CARD_TEXT(card, 2, "L2Setmac");
 140         rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
 141         if (rc == 0) {
 142                 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 143                 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
 144                 dev_info(&card->gdev->dev,
 145                         "MAC address %pM successfully registered on device %s\n",
 146                         card->dev->dev_addr, card->dev->name);
 147         } else {
 148                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 149                 switch (rc) {
 150                 case -EEXIST:
 151                         dev_warn(&card->gdev->dev,
 152                                 "MAC address %pM already exists\n", mac);
 153                         break;
 154                 case -EPERM:
 155                         dev_warn(&card->gdev->dev,
 156                                 "MAC address %pM is not authorized\n", mac);
 157                         break;
 158                 }
 159         }
 160         return rc;
 161 }
 162
 163 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
 164 {
 165         int rc;
 166
 167         QETH_CARD_TEXT(card, 2, "L2Delmac");
 168         if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
 169                 return 0;
 170         rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC);
 171         if (rc == 0)
 172                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 173         return rc;
 174 }
 175
 176 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
 177 {
 178         int rc;
 179
 180         QETH_CARD_TEXT(card, 2, "L2Sgmac");
 181         rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC);
 182         if (rc == -EEXIST)
 183                 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
 184                         mac, QETH_CARD_IFNAME(card));
 185         else if (rc)
 186                 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
 187                         mac, QETH_CARD_IFNAME(card), rc);
 188         return rc;
 189 }
 190
 191 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
 192 {
 193         int rc;
 194
 195         QETH_CARD_TEXT(card, 2, "L2Dgmac");
 196         rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC);
 197         if (rc)
 198                 QETH_DBF_MESSAGE(2,
 199                         "Could not delete group MAC %pM on %s: %d\n",
 200                         mac, QETH_CARD_IFNAME(card), rc);
 201         return rc;
 202 }
 203
 204 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
 205 {
 206         if (mac->is_uc) {
 207                 return qeth_l2_send_setdelmac(card, mac->mac_addr,
 208                                                 IPA_CMD_SETVMAC);
 209         } else {
 210                 return qeth_l2_send_setgroupmac(card, mac->mac_addr);
 211         }
 212 }
 213
 214 static int qeth_l2_remove_mac(struct qeth_card *card, struct qeth_mac *mac)
 215 {
 216         if (mac->is_uc) {
 217                 return qeth_l2_send_setdelmac(card, mac->mac_addr,
 218                                                 IPA_CMD_DELVMAC);
 219         } else {
 220                 return qeth_l2_send_delgroupmac(card, mac->mac_addr);
 221         }
 222 }
 223
 224 static void qeth_l2_del_all_macs(struct qeth_card *card)
 225 {
 226         struct qeth_mac *mac;
 227         struct hlist_node *tmp;
 228         int i;
 229
 230         spin_lock_bh(&card->mclock);
 231         hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
 232                 hash_del(&mac->hnode);
 233                 kfree(mac);
 234         }
 235         spin_unlock_bh(&card->mclock);
 236 }
 237
 238 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
 239 {
 240         if (card->info.type == QETH_CARD_TYPE_OSN)
 241                 return RTN_UNSPEC;
 242         if (is_broadcast_ether_addr(skb->data))
 243                 return RTN_BROADCAST;
 244         if (is_multicast_ether_addr(skb->data))
 245                 return RTN_MULTICAST;
 246         return RTN_UNSPEC;
 247 }
 248
 249 static void qeth_l2_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr,
 250                              struct sk_buff *skb)
 251 {
 252         struct iphdr *iph = ip_hdr(skb);
 253
 254         /* tcph->check contains already the pseudo hdr checksum
 255          * so just set the header flags
 256          */
 257         if (iph->protocol == IPPROTO_UDP)
 258                 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
 259         hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
 260                 QETH_HDR_EXT_CSUM_HDR_REQ;
 261         iph->check = 0;
 262         if (card->options.performance_stats)
 263                 card->perf_stats.tx_csum++;
 264 }
 265
 266 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb,
 267                                 int cast_type, unsigned int data_len)
 268 {
 269         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
 270
 271         memset(hdr, 0, sizeof(struct qeth_hdr));
 272         hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
 273         hdr->hdr.l2.pkt_length = data_len;
 274
 275         /* set byte byte 3 to casting flags */
 276         if (cast_type == RTN_MULTICAST)
 277                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 278         else if (cast_type == RTN_BROADCAST)
 279                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
 280         else
 281                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 282
 283         /* VSWITCH relies on the VLAN
 284          * information to be present in
 285          * the QDIO header */
 286         if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
 287                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
 288                 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
 289         }
 290 }
 291
 292 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode)
 293 {
 294         if (retcode)
 295                 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
 296
 297         switch (retcode) {
 298         case IPA_RC_SUCCESS:
 299                 return 0;
 300         case IPA_RC_L2_INVALID_VLAN_ID:
 301                 return -EINVAL;
 302         case IPA_RC_L2_DUP_VLAN_ID:
 303                 return -EEXIST;
 304         case IPA_RC_L2_VLAN_ID_NOT_FOUND:
 305                 return -ENOENT;
 306         case IPA_RC_L2_VLAN_ID_NOT_ALLOWED:
 307                 return -EPERM;
 308         case -ENOMEM:
 309                 return -ENOMEM;
 310         default:
 311                 return -EIO;
 312         }
 313 }
 314
 315 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
 316                                       struct qeth_reply *reply,
 317                                       unsigned long data)
 318 {
 319         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
 320
 321         QETH_CARD_TEXT(card, 2, "L2sdvcb");
 322         if (cmd->hdr.return_code) {
 323                 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x.\n",
 324                                  cmd->data.setdelvlan.vlan_id,
 325                                  QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 326                 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
 327                 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
 328         }
 329         return 0;
 330 }
 331
 332 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
 333                                    enum qeth_ipa_cmds ipacmd)
 334 {
 335         struct qeth_ipa_cmd *cmd;
 336         struct qeth_cmd_buffer *iob;
 337
 338         QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
 339         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 340         if (!iob)
 341                 return -ENOMEM;
 342         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 343         cmd->data.setdelvlan.vlan_id = i;
 344         return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob,
 345                                             qeth_l2_send_setdelvlan_cb, NULL));
 346 }
 347
 348 static void qeth_l2_process_vlans(struct qeth_card *card)
 349 {
 350         struct qeth_vlan_vid *id;
 351         QETH_CARD_TEXT(card, 3, "L2prcvln");
 352         spin_lock_bh(&card->vlanlock);
 353         list_for_each_entry(id, &card->vid_list, list) {
 354                 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
 355         }
 356         spin_unlock_bh(&card->vlanlock);
 357 }
 358
 359 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
 360                                    __be16 proto, u16 vid)
 361 {
 362         struct qeth_card *card = dev->ml_priv;
 363         struct qeth_vlan_vid *id;
 364         int rc;
 365
 366         QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
 367         if (!vid)
 368                 return 0;
 369         if (card->info.type == QETH_CARD_TYPE_OSM) {
 370                 QETH_CARD_TEXT(card, 3, "aidOSM");
 371                 return 0;
 372         }
 373         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 374                 QETH_CARD_TEXT(card, 3, "aidREC");
 375                 return 0;
 376         }
 377         id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
 378         if (id) {
 379                 id->vid = vid;
 380                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
 381                 if (rc) {
 382                         kfree(id);
 383                         return rc;
 384                 }
 385                 spin_lock_bh(&card->vlanlock);
 386                 list_add_tail(&id->list, &card->vid_list);
 387                 spin_unlock_bh(&card->vlanlock);
 388         } else {
 389                 return -ENOMEM;
 390         }
 391         return 0;
 392 }
 393
 394 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
 395                                     __be16 proto, u16 vid)
 396 {
 397         struct qeth_vlan_vid *id, *tmpid = NULL;
 398         struct qeth_card *card = dev->ml_priv;
 399         int rc = 0;
 400
 401         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
 402         if (card->info.type == QETH_CARD_TYPE_OSM) {
 403                 QETH_CARD_TEXT(card, 3, "kidOSM");
 404                 return 0;
 405         }
 406         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 407                 QETH_CARD_TEXT(card, 3, "kidREC");
 408                 return 0;
 409         }
 410         spin_lock_bh(&card->vlanlock);
 411         list_for_each_entry(id, &card->vid_list, list) {
 412                 if (id->vid == vid) {
 413                         list_del(&id->list);
 414                         tmpid = id;
 415                         break;
 416                 }
 417         }
 418         spin_unlock_bh(&card->vlanlock);
 419         if (tmpid) {
 420                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
 421                 kfree(tmpid);
 422         }
 423         qeth_l2_set_rx_mode(card->dev);
 424         return rc;
 425 }
 426
 427 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
 428 {
 429         QETH_DBF_TEXT(SETUP , 2, "stopcard");
 430         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 431
 432         qeth_set_allowed_threads(card, 0, 1);
 433         if (card->read.state == CH_STATE_UP &&
 434             card->write.state == CH_STATE_UP &&
 435             (card->state == CARD_STATE_UP)) {
 436                 if (recovery_mode &&
 437                     card->info.type != QETH_CARD_TYPE_OSN) {
 438                         qeth_l2_stop(card->dev);
 439                 } else {
 440                         rtnl_lock();
 441                         dev_close(card->dev);
 442                         rtnl_unlock();
 443                 }
 444                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 445                 card->state = CARD_STATE_SOFTSETUP;
 446         }
 447         if (card->state == CARD_STATE_SOFTSETUP) {
 448                 qeth_l2_del_all_macs(card);
 449                 qeth_clear_ipacmd_list(card);
 450                 card->state = CARD_STATE_HARDSETUP;
 451         }
 452         if (card->state == CARD_STATE_HARDSETUP) {
 453                 qeth_qdio_clear_card(card, 0);
 454                 qeth_clear_qdio_buffers(card);
 455                 qeth_clear_working_pool_list(card);
 456                 card->state = CARD_STATE_DOWN;
 457         }
 458         if (card->state == CARD_STATE_DOWN) {
 459                 qeth_clear_cmd_buffers(&card->read);
 460                 qeth_clear_cmd_buffers(&card->write);
 461         }
 462 }
 463
 464 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
 465                                 int budget, int *done)
 466 {
 467         int work_done = 0;
 468         struct sk_buff *skb;
 469         struct qeth_hdr *hdr;
 470         unsigned int len;
 471
 472         *done = 0;
 473         WARN_ON_ONCE(!budget);
 474         while (budget) {
 475                 skb = qeth_core_get_next_skb(card,
 476                         &card->qdio.in_q->bufs[card->rx.b_index],
 477                         &card->rx.b_element, &card->rx.e_offset, &hdr);
 478                 if (!skb) {
 479                         *done = 1;
 480                         break;
 481                 }
 482                 skb->dev = card->dev;
 483                 switch (hdr->hdr.l2.id) {
 484                 case QETH_HEADER_TYPE_LAYER2:
 485                         skb->pkt_type = PACKET_HOST;
 486                         skb->protocol = eth_type_trans(skb, skb->dev);
 487                         if ((card->dev->features & NETIF_F_RXCSUM)
 488                            && ((hdr->hdr.l2.flags[1] &
 489                                 (QETH_HDR_EXT_CSUM_HDR_REQ |
 490                                    QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
 491                                 (QETH_HDR_EXT_CSUM_HDR_REQ |
 492                                    QETH_HDR_EXT_CSUM_TRANSP_REQ)))
 493                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 494                         else
 495                                 skb->ip_summed = CHECKSUM_NONE;
 496                         if (skb->protocol == htons(ETH_P_802_2))
 497                                 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
 498                         len = skb->len;
 499                         napi_gro_receive(&card->napi, skb);
 500                         break;
 501                 case QETH_HEADER_TYPE_OSN:
 502                         if (card->info.type == QETH_CARD_TYPE_OSN) {
 503                                 skb_push(skb, sizeof(struct qeth_hdr));
 504                                 skb_copy_to_linear_data(skb, hdr,
 505                                                 sizeof(struct qeth_hdr));
 506                                 len = skb->len;
 507                                 card->osn_info.data_cb(skb);
 508                                 break;
 509                         }
 510                         /* else unknown */
 511                 default:
 512                         dev_kfree_skb_any(skb);
 513                         QETH_CARD_TEXT(card, 3, "inbunkno");
 514                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
 515                         continue;
 516                 }
 517                 work_done++;
 518                 budget--;
 519                 card->stats.rx_packets++;
 520                 card->stats.rx_bytes += len;
 521         }
 522         return work_done;
 523 }
 524
 525 static int qeth_l2_request_initial_mac(struct qeth_card *card)
 526 {
 527         int rc = 0;
 528         char vendor_pre[] = {0x02, 0x00, 0x00};
 529
 530         QETH_DBF_TEXT(SETUP, 2, "l2reqmac");
 531         QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
 532
 533         if (MACHINE_IS_VM) {
 534                 rc = qeth_vm_request_mac(card);
 535                 if (!rc)
 536                         goto out;
 537                 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n",
 538                                  CARD_BUS_ID(card), rc);
 539                 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc);
 540                 /* fall back to alternative mechanism: */
 541         }
 542
 543         if (card->info.type == QETH_CARD_TYPE_IQD ||
 544             card->info.type == QETH_CARD_TYPE_OSM ||
 545             card->info.type == QETH_CARD_TYPE_OSX ||
 546             card->info.guestlan) {
 547                 rc = qeth_setadpparms_change_macaddr(card);
 548                 if (rc) {
 549                         QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
 550                                 "device %s: x%x\n", CARD_BUS_ID(card), rc);
 551                         QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
 552                         return rc;
 553                 }
 554         } else {
 555                 eth_random_addr(card->dev->dev_addr);
 556                 memcpy(card->dev->dev_addr, vendor_pre, 3);
 557         }
 558 out:
 559         QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len);
 560         return 0;
 561 }
 562
 563 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
 564 {
 565         struct sockaddr *addr = p;
 566         struct qeth_card *card = dev->ml_priv;
 567         int rc = 0;
 568
 569         QETH_CARD_TEXT(card, 3, "setmac");
 570
 571         if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
 572                 QETH_CARD_TEXT(card, 3, "setmcINV");
 573                 return -EOPNOTSUPP;
 574         }
 575
 576         if (card->info.type == QETH_CARD_TYPE_OSN ||
 577             card->info.type == QETH_CARD_TYPE_OSM ||
 578             card->info.type == QETH_CARD_TYPE_OSX) {
 579                 QETH_CARD_TEXT(card, 3, "setmcTYP");
 580                 return -EOPNOTSUPP;
 581         }
 582         QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
 583         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 584                 QETH_CARD_TEXT(card, 3, "setmcREC");
 585                 return -ERESTARTSYS;
 586         }
 587         rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
 588         if (!rc || (rc == -ENOENT))
 589                 rc = qeth_l2_send_setmac(card, addr->sa_data);
 590         return rc ? -EINVAL : 0;
 591 }
 592
 593 static void qeth_promisc_to_bridge(struct qeth_card *card)
 594 {
 595         struct net_device *dev = card->dev;
 596         enum qeth_ipa_promisc_modes promisc_mode;
 597         int role;
 598         int rc;
 599
 600         QETH_CARD_TEXT(card, 3, "pmisc2br");
 601
 602         if (!card->options.sbp.reflect_promisc)
 603                 return;
 604         promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
 605                                                 : SET_PROMISC_MODE_OFF;
 606         if (promisc_mode == card->info.promisc_mode)
 607                 return;
 608
 609         if (promisc_mode == SET_PROMISC_MODE_ON) {
 610                 if (card->options.sbp.reflect_promisc_primary)
 611                         role = QETH_SBP_ROLE_PRIMARY;
 612                 else
 613                         role = QETH_SBP_ROLE_SECONDARY;
 614         } else
 615                 role = QETH_SBP_ROLE_NONE;
 616
 617         rc = qeth_bridgeport_setrole(card, role);
 618         QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
 619                         (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
 620         if (!rc) {
 621                 card->options.sbp.role = role;
 622                 card->info.promisc_mode = promisc_mode;
 623         }
 624
 625 }
 626 /* New MAC address is added to the hash table and marked to be written on card
 627  * only if there is not in the hash table storage already
 628  *
 629 */
 630 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha,
 631                             u8 is_uc)
 632 {
 633         u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
 634         struct qeth_mac *mac;
 635
 636         hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) {
 637                 if (is_uc == mac->is_uc &&
 638                     !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
 639                         mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 640                         return;
 641                 }
 642         }
 643
 644         mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
 645
 646         if (!mac)
 647                 return;
 648
 649         memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
 650         mac->is_uc = is_uc;
 651         mac->disp_flag = QETH_DISP_ADDR_ADD;
 652
 653         hash_add(card->mac_htable, &mac->hnode, mac_hash);
 654 }
 655
 656 static void qeth_l2_set_rx_mode(struct net_device *dev)
 657 {
 658         struct qeth_card *card = dev->ml_priv;
 659         struct netdev_hw_addr *ha;
 660         struct qeth_mac *mac;
 661         struct hlist_node *tmp;
 662         int i;
 663         int rc;
 664
 665         if (card->info.type == QETH_CARD_TYPE_OSN)
 666                 return;
 667
 668         QETH_CARD_TEXT(card, 3, "setmulti");
 669         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
 670             (card->state != CARD_STATE_UP))
 671                 return;
 672
 673         spin_lock_bh(&card->mclock);
 674
 675         netdev_for_each_mc_addr(ha, dev)
 676                 qeth_l2_add_mac(card, ha, 0);
 677
 678         netdev_for_each_uc_addr(ha, dev)
 679                 qeth_l2_add_mac(card, ha, 1);
 680
 681         hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
 682                 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
 683                         qeth_l2_remove_mac(card, mac);
 684                         hash_del(&mac->hnode);
 685                         kfree(mac);
 686
 687                 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
 688                         rc = qeth_l2_write_mac(card, mac);
 689                         if (rc) {
 690                                 hash_del(&mac->hnode);
 691                                 kfree(mac);
 692                         } else
 693                                 mac->disp_flag = QETH_DISP_ADDR_DELETE;
 694                 } else
 695                         mac->disp_flag = QETH_DISP_ADDR_DELETE;
 696         }
 697
 698         spin_unlock_bh(&card->mclock);
 699
 700         if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 701                 qeth_setadp_promisc_mode(card);
 702         else
 703                 qeth_promisc_to_bridge(card);
 704 }
 705
 706 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb,
 707                             struct qeth_qdio_out_q *queue, int cast_type)
 708 {
 709         unsigned int data_offset = ETH_HLEN;
 710         struct qeth_hdr *hdr;
 711         int rc;
 712
 713         hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
 714         if (!hdr)
 715                 return -ENOMEM;
 716         qeth_l2_fill_header(hdr, skb, cast_type, skb->len);
 717         skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr),
 718                                   data_offset);
 719
 720         if (!qeth_get_elements_no(card, skb, 1, data_offset)) {
 721                 rc = -E2BIG;
 722                 goto out;
 723         }
 724         rc = qeth_do_send_packet_fast(queue, skb, hdr, data_offset,
 725                                       sizeof(*hdr) + data_offset);
 726 out:
 727         if (rc)
 728                 kmem_cache_free(qeth_core_header_cache, hdr);
 729         return rc;
 730 }
 731
 732 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb,
 733                             struct qeth_qdio_out_q *queue, int cast_type)
 734 {
 735         int push_len = sizeof(struct qeth_hdr);
 736         unsigned int elements, nr_frags;
 737         unsigned int hdr_elements = 0;
 738         struct qeth_hdr *hdr = NULL;
 739         unsigned int hd_len = 0;
 740         int rc;
 741
 742         /* fix hardware limitation: as long as we do not have sbal
 743          * chaining we can not send long frag lists
 744          */
 745         if (!qeth_get_elements_no(card, skb, 0, 0)) {
 746                 rc = skb_linearize(skb);
 747
 748                 if (card->options.performance_stats) {
 749                         if (rc)
 750                                 card->perf_stats.tx_linfail++;
 751                         else
 752                                 card->perf_stats.tx_lin++;
 753                 }
 754                 if (rc)
 755                         return rc;
 756         }
 757         nr_frags = skb_shinfo(skb)->nr_frags;
 758
 759         rc = skb_cow_head(skb, push_len);
 760         if (rc)
 761                 return rc;
 762         push_len = qeth_push_hdr(skb, &hdr, push_len);
 763         if (push_len < 0)
 764                 return push_len;
 765         if (!push_len) {
 766                 /* hdr was allocated from cache */
 767                 hd_len = sizeof(*hdr);
 768                 hdr_elements = 1;
 769         }
 770         qeth_l2_fill_header(hdr, skb, cast_type, skb->len - push_len);
 771         if (skb->ip_summed == CHECKSUM_PARTIAL)
 772                 qeth_l2_hdr_csum(card, hdr, skb);
 773
 774         elements = qeth_get_elements_no(card, skb, hdr_elements, 0);
 775         if (!elements) {
 776                 rc = -E2BIG;
 777                 goto out;
 778         }
 779         elements += hdr_elements;
 780
 781         /* TODO: remove the skb_orphan() once TX completion is fast enough */
 782         skb_orphan(skb);
 783         rc = qeth_do_send_packet(card, queue, skb, hdr, 0, hd_len, elements);
 784 out:
 785         if (!rc) {
 786                 if (card->options.performance_stats && nr_frags) {
 787                         card->perf_stats.sg_skbs_sent++;
 788                         /* nr_frags + skb->data */
 789                         card->perf_stats.sg_frags_sent += nr_frags + 1;
 790                 }
 791         } else {
 792                 if (hd_len)
 793                         kmem_cache_free(qeth_core_header_cache, hdr);
 794                 if (rc == -EBUSY)
 795                         /* roll back to ETH header */
 796                         skb_pull(skb, push_len);
 797         }
 798         return rc;
 799 }
 800
 801 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
 802                             struct qeth_qdio_out_q *queue)
 803 {
 804         unsigned int elements;
 805         struct qeth_hdr *hdr;
 806
 807         if (skb->protocol == htons(ETH_P_IPV6))
 808                 return -EPROTONOSUPPORT;
 809
 810         hdr = (struct qeth_hdr *)skb->data;
 811         elements = qeth_get_elements_no(card, skb, 0, 0);
 812         if (!elements)
 813                 return -E2BIG;
 814         if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr)))
 815                 return -EINVAL;
 816         return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements);
 817 }
 818
 819 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
 820                                            struct net_device *dev)
 821 {
 822         struct qeth_card *card = dev->ml_priv;
 823         int cast_type = qeth_l2_get_cast_type(card, skb);
 824         struct qeth_qdio_out_q *queue;
 825         int tx_bytes = skb->len;
 826         int rc;
 827
 828         if (card->qdio.do_prio_queueing || (cast_type &&
 829                                         card->info.is_multicast_different))
 830                 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
 831                                         qeth_get_ip_version(skb), cast_type)];
 832         else
 833                 queue = card->qdio.out_qs[card->qdio.default_out_queue];
 834
 835         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
 836                 card->stats.tx_carrier_errors++;
 837                 goto tx_drop;
 838         }
 839
 840         if (card->options.performance_stats) {
 841                 card->perf_stats.outbound_cnt++;
 842                 card->perf_stats.outbound_start_time = qeth_get_micros();
 843         }
 844         netif_stop_queue(dev);
 845
 846         switch (card->info.type) {
 847         case QETH_CARD_TYPE_OSN:
 848                 rc = qeth_l2_xmit_osn(card, skb, queue);
 849                 break;
 850         case QETH_CARD_TYPE_IQD:
 851                 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type);
 852                 break;
 853         default:
 854                 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type);
 855         }
 856
 857         if (!rc) {
 858                 card->stats.tx_packets++;
 859                 card->stats.tx_bytes += tx_bytes;
 860                 if (card->options.performance_stats)
 861                         card->perf_stats.outbound_time += qeth_get_micros() -
 862                                 card->perf_stats.outbound_start_time;
 863                 netif_wake_queue(dev);
 864                 return NETDEV_TX_OK;
 865         } else if (rc == -EBUSY) {
 866                 return NETDEV_TX_BUSY;
 867         } /* else fall through */
 868
 869 tx_drop:
 870         card->stats.tx_dropped++;
 871         card->stats.tx_errors++;
 872         dev_kfree_skb_any(skb);
 873         netif_wake_queue(dev);
 874         return NETDEV_TX_OK;
 875 }
 876
 877 static int __qeth_l2_open(struct net_device *dev)
 878 {
 879         struct qeth_card *card = dev->ml_priv;
 880         int rc = 0;
 881
 882         QETH_CARD_TEXT(card, 4, "qethopen");
 883         if (card->state == CARD_STATE_UP)
 884                 return rc;
 885         if (card->state != CARD_STATE_SOFTSETUP)
 886                 return -ENODEV;
 887
 888         if ((card->info.type != QETH_CARD_TYPE_OSN) &&
 889              (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
 890                 QETH_CARD_TEXT(card, 4, "nomacadr");
 891                 return -EPERM;
 892         }
 893         card->data.state = CH_STATE_UP;
 894         card->state = CARD_STATE_UP;
 895         netif_start_queue(dev);
 896
 897         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
 898                 napi_enable(&card->napi);
 899                 napi_schedule(&card->napi);
 900         } else
 901                 rc = -EIO;
 902         return rc;
 903 }
 904
 905 static int qeth_l2_open(struct net_device *dev)
 906 {
 907         struct qeth_card *card = dev->ml_priv;
 908
 909         QETH_CARD_TEXT(card, 5, "qethope_");
 910         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 911                 QETH_CARD_TEXT(card, 3, "openREC");
 912                 return -ERESTARTSYS;
 913         }
 914         return __qeth_l2_open(dev);
 915 }
 916
 917 static int qeth_l2_stop(struct net_device *dev)
 918 {
 919         struct qeth_card *card = dev->ml_priv;
 920
 921         QETH_CARD_TEXT(card, 4, "qethstop");
 922         netif_tx_disable(dev);
 923         if (card->state == CARD_STATE_UP) {
 924                 card->state = CARD_STATE_SOFTSETUP;
 925                 napi_disable(&card->napi);
 926         }
 927         return 0;
 928 }
 929
 930 static const struct device_type qeth_l2_devtype = {
 931         .name = "qeth_layer2",
 932         .groups = qeth_l2_attr_groups,
 933 };
 934
 935 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
 936 {
 937         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 938         int rc;
 939
 940         if (gdev->dev.type == &qeth_generic_devtype) {
 941                 rc = qeth_l2_create_device_attributes(&gdev->dev);
 942                 if (rc)
 943                         return rc;
 944         }
 945         INIT_LIST_HEAD(&card->vid_list);
 946         hash_init(card->mac_htable);
 947         card->options.layer2 = 1;
 948         card->info.hwtrap = 0;
 949         qeth_l2_vnicc_set_defaults(card);
 950         return 0;
 951 }
 952
 953 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
 954 {
 955         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
 956
 957         if (cgdev->dev.type == &qeth_generic_devtype)
 958                 qeth_l2_remove_device_attributes(&cgdev->dev);
 959         qeth_set_allowed_threads(card, 0, 1);
 960         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
 961
 962         if (cgdev->state == CCWGROUP_ONLINE)
 963                 qeth_l2_set_offline(cgdev);
 964
 965         if (card->dev) {
 966                 netif_napi_del(&card->napi);
 967                 unregister_netdev(card->dev);
 968                 card->dev = NULL;
 969         }
 970         return;
 971 }
 972
 973 static const struct ethtool_ops qeth_l2_ethtool_ops = {
 974         .get_link = ethtool_op_get_link,
 975         .get_strings = qeth_core_get_strings,
 976         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 977         .get_sset_count = qeth_core_get_sset_count,
 978         .get_drvinfo = qeth_core_get_drvinfo,
 979         .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
 980 };
 981
 982 static const struct ethtool_ops qeth_l2_osn_ops = {
 983         .get_strings = qeth_core_get_strings,
 984         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 985         .get_sset_count = qeth_core_get_sset_count,
 986         .get_drvinfo = qeth_core_get_drvinfo,
 987 };
 988
 989 static const struct net_device_ops qeth_l2_netdev_ops = {
 990         .ndo_open               = qeth_l2_open,
 991         .ndo_stop               = qeth_l2_stop,
 992         .ndo_get_stats          = qeth_get_stats,
 993         .ndo_start_xmit         = qeth_l2_hard_start_xmit,
 994         .ndo_validate_addr      = eth_validate_addr,
 995         .ndo_set_rx_mode        = qeth_l2_set_rx_mode,
 996         .ndo_do_ioctl           = qeth_do_ioctl,
 997         .ndo_set_mac_address    = qeth_l2_set_mac_address,
 998         .ndo_change_mtu         = qeth_change_mtu,
 999         .ndo_vlan_rx_add_vid    = qeth_l2_vlan_rx_add_vid,
1000         .ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
1001         .ndo_tx_timeout         = qeth_tx_timeout,
1002         .ndo_fix_features       = qeth_fix_features,
1003         .ndo_set_features       = qeth_set_features
1004 };
1005
1006 static int qeth_l2_setup_netdev(struct qeth_card *card)
1007 {
1008         switch (card->info.type) {
1009         case QETH_CARD_TYPE_IQD:
1010                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1011                                          ether_setup);
1012                 break;
1013         case QETH_CARD_TYPE_OSN:
1014                 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1015                                          ether_setup);
1016                 break;
1017         default:
1018                 card->dev = alloc_etherdev(0);
1019         }
1020
1021         if (!card->dev)
1022                 return -ENODEV;
1023
1024         card->dev->ml_priv = card;
1025         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
1026         card->dev->mtu = card->info.initial_mtu;
1027         card->dev->min_mtu = 64;
1028         card->dev->max_mtu = ETH_MAX_MTU;
1029         card->dev->netdev_ops = &qeth_l2_netdev_ops;
1030         if (card->info.type == QETH_CARD_TYPE_OSN) {
1031                 card->dev->ethtool_ops = &qeth_l2_osn_ops;
1032                 card->dev->flags |= IFF_NOARP;
1033         } else {
1034                 card->dev->ethtool_ops = &qeth_l2_ethtool_ops;
1035         }
1036         card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1037         if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
1038                 card->dev->hw_features = NETIF_F_SG;
1039                 card->dev->vlan_features = NETIF_F_SG;
1040                 /* OSA 3S and earlier has no RX/TX support */
1041                 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
1042                         card->dev->hw_features |= NETIF_F_IP_CSUM;
1043                         card->dev->vlan_features |= NETIF_F_IP_CSUM;
1044                 }
1045                 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1046                         card->dev->hw_features |= NETIF_F_RXCSUM;
1047                         card->dev->vlan_features |= NETIF_F_RXCSUM;
1048                 }
1049         }
1050         if (card->info.type != QETH_CARD_TYPE_OSN &&
1051             card->info.type != QETH_CARD_TYPE_IQD) {
1052                 card->dev->priv_flags &= ~IFF_TX_SKB_SHARING;
1053                 card->dev->needed_headroom = sizeof(struct qeth_hdr);
1054         }
1055
1056         card->info.broadcast_capable = 1;
1057         qeth_l2_request_initial_mac(card);
1058         card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
1059                                   PAGE_SIZE;
1060         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1061         netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
1062         netif_carrier_off(card->dev);
1063         return register_netdev(card->dev);
1064 }
1065
1066 static int qeth_l2_start_ipassists(struct qeth_card *card)
1067 {
1068         /* configure isolation level */
1069         if (qeth_set_access_ctrl_online(card, 0))
1070                 return -ENODEV;
1071         return 0;
1072 }
1073
1074 static void qeth_l2_trace_features(struct qeth_card *card)
1075 {
1076         /* Set BridgePort features */
1077         QETH_CARD_TEXT(card, 2, "featuSBP");
1078         QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
1079                       sizeof(card->options.sbp.supported_funcs));
1080         /* VNIC Characteristics features */
1081         QETH_CARD_TEXT(card, 2, "feaVNICC");
1082         QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
1083                       sizeof(card->options.vnicc.sup_chars));
1084 }
1085
1086 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1087 {
1088         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1089         int rc = 0;
1090         enum qeth_card_states recover_flag;
1091
1092         mutex_lock(&card->discipline_mutex);
1093         mutex_lock(&card->conf_mutex);
1094         QETH_DBF_TEXT(SETUP, 2, "setonlin");
1095         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1096
1097         recover_flag = card->state;
1098         rc = qeth_core_hardsetup_card(card);
1099         if (rc) {
1100                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1101                 rc = -ENODEV;
1102                 goto out_remove;
1103         }
1104         qeth_bridgeport_query_support(card);
1105         if (card->options.sbp.supported_funcs)
1106                 dev_info(&card->gdev->dev,
1107                 "The device represents a Bridge Capable Port\n");
1108
1109         if (!card->dev && qeth_l2_setup_netdev(card)) {
1110                 rc = -ENODEV;
1111                 goto out_remove;
1112         }
1113
1114         if (card->info.type != QETH_CARD_TYPE_OSN)
1115                 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1116
1117         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1118                 if (card->info.hwtrap &&
1119                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1120                         card->info.hwtrap = 0;
1121         } else
1122                 card->info.hwtrap = 0;
1123
1124         /* for the rx_bcast characteristic, init VNICC after setmac */
1125         qeth_l2_vnicc_init(card);
1126
1127         qeth_trace_features(card);
1128         qeth_l2_trace_features(card);
1129
1130         qeth_l2_setup_bridgeport_attrs(card);
1131
1132         card->state = CARD_STATE_HARDSETUP;
1133         memset(&card->rx, 0, sizeof(struct qeth_rx));
1134         qeth_print_status_message(card);
1135
1136         /* softsetup */
1137         QETH_DBF_TEXT(SETUP, 2, "softsetp");
1138
1139         if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1140             (card->info.type == QETH_CARD_TYPE_OSX)) {
1141                 rc = qeth_l2_start_ipassists(card);
1142                 if (rc)
1143                         goto out_remove;
1144         }
1145
1146         if (card->info.type != QETH_CARD_TYPE_OSN &&
1147             card->info.type != QETH_CARD_TYPE_OSM)
1148                 qeth_l2_process_vlans(card);
1149
1150         netif_tx_disable(card->dev);
1151
1152         rc = qeth_init_qdio_queues(card);
1153         if (rc) {
1154                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1155                 rc = -ENODEV;
1156                 goto out_remove;
1157         }
1158         card->state = CARD_STATE_SOFTSETUP;
1159         if (card->lan_online)
1160                 netif_carrier_on(card->dev);
1161         else
1162                 netif_carrier_off(card->dev);
1163
1164         qeth_set_allowed_threads(card, 0xffffffff, 0);
1165         if (recover_flag == CARD_STATE_RECOVER) {
1166                 if (recovery_mode &&
1167                     card->info.type != QETH_CARD_TYPE_OSN) {
1168                         __qeth_l2_open(card->dev);
1169                 } else {
1170                         rtnl_lock();
1171                         dev_open(card->dev);
1172                         rtnl_unlock();
1173                 }
1174                 /* this also sets saved unicast addresses */
1175                 qeth_l2_set_rx_mode(card->dev);
1176                 rtnl_lock();
1177                 qeth_recover_features(card->dev);
1178                 rtnl_unlock();
1179         }
1180         /* let user_space know that device is online */
1181         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1182         mutex_unlock(&card->conf_mutex);
1183         mutex_unlock(&card->discipline_mutex);
1184         return 0;
1185
1186 out_remove:
1187         qeth_l2_stop_card(card, 0);
1188         ccw_device_set_offline(CARD_DDEV(card));
1189         ccw_device_set_offline(CARD_WDEV(card));
1190         ccw_device_set_offline(CARD_RDEV(card));
1191         qdio_free(CARD_DDEV(card));
1192         if (recover_flag == CARD_STATE_RECOVER)
1193                 card->state = CARD_STATE_RECOVER;
1194         else
1195                 card->state = CARD_STATE_DOWN;
1196         mutex_unlock(&card->conf_mutex);
1197         mutex_unlock(&card->discipline_mutex);
1198         return rc;
1199 }
1200
1201 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1202 {
1203         return __qeth_l2_set_online(gdev, 0);
1204 }
1205
1206 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1207                                         int recovery_mode)
1208 {
1209         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1210         int rc = 0, rc2 = 0, rc3 = 0;
1211         enum qeth_card_states recover_flag;
1212
1213         mutex_lock(&card->discipline_mutex);
1214         mutex_lock(&card->conf_mutex);
1215         QETH_DBF_TEXT(SETUP, 3, "setoffl");
1216         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1217
1218         if (card->dev && netif_carrier_ok(card->dev))
1219                 netif_carrier_off(card->dev);
1220         recover_flag = card->state;
1221         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1222                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1223                 card->info.hwtrap = 1;
1224         }
1225         qeth_l2_stop_card(card, recovery_mode);
1226         rc  = ccw_device_set_offline(CARD_DDEV(card));
1227         rc2 = ccw_device_set_offline(CARD_WDEV(card));
1228         rc3 = ccw_device_set_offline(CARD_RDEV(card));
1229         if (!rc)
1230                 rc = (rc2) ? rc2 : rc3;
1231         if (rc)
1232                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1233         qdio_free(CARD_DDEV(card));
1234         if (recover_flag == CARD_STATE_UP)
1235                 card->state = CARD_STATE_RECOVER;
1236         /* let user_space know that device is offline */
1237         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1238         mutex_unlock(&card->conf_mutex);
1239         mutex_unlock(&card->discipline_mutex);
1240         return 0;
1241 }
1242
1243 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1244 {
1245         return __qeth_l2_set_offline(cgdev, 0);
1246 }
1247
1248 static int qeth_l2_recover(void *ptr)
1249 {
1250         struct qeth_card *card;
1251         int rc = 0;
1252
1253         card = (struct qeth_card *) ptr;
1254         QETH_CARD_TEXT(card, 2, "recover1");
1255         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1256                 return 0;
1257         QETH_CARD_TEXT(card, 2, "recover2");
1258         dev_warn(&card->gdev->dev,
1259                 "A recovery process has been started for the device\n");
1260         qeth_set_recovery_task(card);
1261         __qeth_l2_set_offline(card->gdev, 1);
1262         rc = __qeth_l2_set_online(card->gdev, 1);
1263         if (!rc)
1264                 dev_info(&card->gdev->dev,
1265                         "Device successfully recovered!\n");
1266         else {
1267                 qeth_close_dev(card);
1268                 dev_warn(&card->gdev->dev, "The qeth device driver "
1269                                 "failed to recover an error on the device\n");
1270         }
1271         qeth_clear_recovery_task(card);
1272         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1273         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1274         return 0;
1275 }
1276
1277 static int __init qeth_l2_init(void)
1278 {
1279         pr_info("register layer 2 discipline\n");
1280         return 0;
1281 }
1282
1283 static void __exit qeth_l2_exit(void)
1284 {
1285         pr_info("unregister layer 2 discipline\n");
1286 }
1287
1288 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1289 {
1290         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1291
1292         if (card->dev)
1293                 netif_device_detach(card->dev);
1294         qeth_set_allowed_threads(card, 0, 1);
1295         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1296         if (gdev->state == CCWGROUP_OFFLINE)
1297                 return 0;
1298         if (card->state == CARD_STATE_UP) {
1299                 if (card->info.hwtrap)
1300                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1301                 __qeth_l2_set_offline(card->gdev, 1);
1302         } else
1303                 __qeth_l2_set_offline(card->gdev, 0);
1304         return 0;
1305 }
1306
1307 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1308 {
1309         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1310         int rc = 0;
1311
1312         if (gdev->state == CCWGROUP_OFFLINE)
1313                 goto out;
1314
1315         if (card->state == CARD_STATE_RECOVER) {
1316                 rc = __qeth_l2_set_online(card->gdev, 1);
1317                 if (rc) {
1318                         rtnl_lock();
1319                         dev_close(card->dev);
1320                         rtnl_unlock();
1321                 }
1322         } else
1323                 rc = __qeth_l2_set_online(card->gdev, 0);
1324 out:
1325         qeth_set_allowed_threads(card, 0xffffffff, 0);
1326         if (card->dev)
1327                 netif_device_attach(card->dev);
1328         if (rc)
1329                 dev_warn(&card->gdev->dev, "The qeth device driver "
1330                         "failed to recover an error on the device\n");
1331         return rc;
1332 }
1333
1334 /* Returns zero if the command is successfully "consumed" */
1335 static int qeth_l2_control_event(struct qeth_card *card,
1336                                         struct qeth_ipa_cmd *cmd)
1337 {
1338         switch (cmd->hdr.command) {
1339         case IPA_CMD_SETBRIDGEPORT_OSA:
1340         case IPA_CMD_SETBRIDGEPORT_IQD:
1341                 if (cmd->data.sbp.hdr.command_code ==
1342                                 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1343                         qeth_bridge_state_change(card, cmd);
1344                         return 0;
1345                 } else
1346                         return 1;
1347         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1348                 qeth_bridge_host_event(card, cmd);
1349                 return 0;
1350         default:
1351                 return 1;
1352         }
1353 }
1354
1355 struct qeth_discipline qeth_l2_discipline = {
1356         .devtype = &qeth_l2_devtype,
1357         .start_poll = qeth_qdio_start_poll,
1358         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1359         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1360         .process_rx_buffer = qeth_l2_process_inbound_buffer,
1361         .recover = qeth_l2_recover,
1362         .setup = qeth_l2_probe_device,
1363         .remove = qeth_l2_remove_device,
1364         .set_online = qeth_l2_set_online,
1365         .set_offline = qeth_l2_set_offline,
1366         .freeze = qeth_l2_pm_suspend,
1367         .thaw = qeth_l2_pm_resume,
1368         .restore = qeth_l2_pm_resume,
1369         .do_ioctl = NULL,
1370         .control_event_handler = qeth_l2_control_event,
1371 };
1372 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1373
1374 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1375                            struct qeth_cmd_buffer *iob)
1376 {
1377         unsigned long flags;
1378         int rc = 0;
1379
1380         QETH_CARD_TEXT(card, 5, "osndctrd");
1381
1382         wait_event(card->wait_q,
1383                    atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1384         qeth_prepare_control_data(card, len, iob);
1385         QETH_CARD_TEXT(card, 6, "osnoirqp");
1386         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1387         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1388                               (addr_t) iob, 0, 0);
1389         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1390         if (rc) {
1391                 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1392                            "ccw_device_start rc = %i\n", rc);
1393                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1394                 qeth_release_buffer(iob->channel, iob);
1395                 atomic_set(&card->write.irq_pending, 0);
1396                 wake_up(&card->wait_q);
1397         }
1398         return rc;
1399 }
1400
1401 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1402                         struct qeth_cmd_buffer *iob, int data_len)
1403 {
1404         u16 s1, s2;
1405
1406         QETH_CARD_TEXT(card, 4, "osndipa");
1407
1408         qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1409         s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1410         s2 = (u16)data_len;
1411         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1412         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1413         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1414         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1415         return qeth_osn_send_control_data(card, s1, iob);
1416 }
1417
1418 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1419 {
1420         struct qeth_cmd_buffer *iob;
1421         struct qeth_card *card;
1422         int rc;
1423
1424         if (!dev)
1425                 return -ENODEV;
1426         card = dev->ml_priv;
1427         if (!card)
1428                 return -ENODEV;
1429         QETH_CARD_TEXT(card, 2, "osnsdmc");
1430         if (!qeth_card_hw_is_reachable(card))
1431                 return -ENODEV;
1432         iob = qeth_wait_for_buffer(&card->write);
1433         memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1434         rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1435         return rc;
1436 }
1437 EXPORT_SYMBOL(qeth_osn_assist);
1438
1439 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1440                   int (*assist_cb)(struct net_device *, void *),
1441                   int (*data_cb)(struct sk_buff *))
1442 {
1443         struct qeth_card *card;
1444
1445         *dev = qeth_l2_netdev_by_devno(read_dev_no);
1446         if (*dev == NULL)
1447                 return -ENODEV;
1448         card = (*dev)->ml_priv;
1449         if (!card)
1450                 return -ENODEV;
1451         QETH_CARD_TEXT(card, 2, "osnreg");
1452         if ((assist_cb == NULL) || (data_cb == NULL))
1453                 return -EINVAL;
1454         card->osn_info.assist_cb = assist_cb;
1455         card->osn_info.data_cb = data_cb;
1456         return 0;
1457 }
1458 EXPORT_SYMBOL(qeth_osn_register);
1459
1460 void qeth_osn_deregister(struct net_device *dev)
1461 {
1462         struct qeth_card *card;
1463
1464         if (!dev)
1465                 return;
1466         card = dev->ml_priv;
1467         if (!card)
1468                 return;
1469         QETH_CARD_TEXT(card, 2, "osndereg");
1470         card->osn_info.assist_cb = NULL;
1471         card->osn_info.data_cb = NULL;
1472         return;
1473 }
1474 EXPORT_SYMBOL(qeth_osn_deregister);
1475
1476 /* SETBRIDGEPORT support, async notifications */
1477
1478 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1479
1480 /**
1481  * qeth_bridge_emit_host_event() - bridgeport address change notification
1482  * @card:  qeth_card structure pointer, for udev events.
1483  * @evtype:  "normal" register/unregister, or abort, or reset. For abort
1484  *            and reset token and addr_lnid are unused and may be NULL.
1485  * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
1486  *                        object, 0 - addition of an object.
1487  *                        0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1488  * @token: "network token" structure identifying physical address of the port.
1489  * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1490  *
1491  * This function is called when registrations and deregistrations are
1492  * reported by the hardware, and also when notifications are enabled -
1493  * for all currently registered addresses.
1494  */
1495 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1496         enum qeth_an_event_type evtype,
1497         u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1498 {
1499         char str[7][32];
1500         char *env[8];
1501         int i = 0;
1502
1503         switch (evtype) {
1504         case anev_reg_unreg:
1505                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1506                                 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1507                                 ? "deregister" : "register");
1508                 env[i] = str[i]; i++;
1509                 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1510                         snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1511                                 addr_lnid->lnid);
1512                         env[i] = str[i]; i++;
1513                 }
1514                 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1515                         snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1516                                 addr_lnid->mac);
1517                         env[i] = str[i]; i++;
1518                 }
1519                 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1520                         token->cssid, token->ssid, token->devnum);
1521                 env[i] = str[i]; i++;
1522                 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1523                 env[i] = str[i]; i++;
1524                 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1525                                 token->chpid);
1526                 env[i] = str[i]; i++;
1527                 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1528                 env[i] = str[i]; i++;
1529                 break;
1530         case anev_abort:
1531                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1532                 env[i] = str[i]; i++;
1533                 break;
1534         case anev_reset:
1535                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1536                 env[i] = str[i]; i++;
1537                 break;
1538         }
1539         env[i] = NULL;
1540         kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1541 }
1542
1543 struct qeth_bridge_state_data {
1544         struct work_struct worker;
1545         struct qeth_card *card;
1546         struct qeth_sbp_state_change qports;
1547 };
1548
1549 static void qeth_bridge_state_change_worker(struct work_struct *work)
1550 {
1551         struct qeth_bridge_state_data *data =
1552                 container_of(work, struct qeth_bridge_state_data, worker);
1553         /* We are only interested in the first entry - local port */
1554         struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1555         char env_locrem[32];
1556         char env_role[32];
1557         char env_state[32];
1558         char *env[] = {
1559                 env_locrem,
1560                 env_role,
1561                 env_state,
1562                 NULL
1563         };
1564
1565         /* Role should not change by itself, but if it did, */
1566         /* information from the hardware is authoritative.  */
1567         mutex_lock(&data->card->conf_mutex);
1568         data->card->options.sbp.role = entry->role;
1569         mutex_unlock(&data->card->conf_mutex);
1570
1571         snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1572         snprintf(env_role, sizeof(env_role), "ROLE=%s",
1573                 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1574                 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1575                 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1576                 "<INVALID>");
1577         snprintf(env_state, sizeof(env_state), "STATE=%s",
1578                 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1579                 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1580                 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1581                 "<INVALID>");
1582         kobject_uevent_env(&data->card->gdev->dev.kobj,
1583                                 KOBJ_CHANGE, env);
1584         kfree(data);
1585 }
1586
1587 static void qeth_bridge_state_change(struct qeth_card *card,
1588                                         struct qeth_ipa_cmd *cmd)
1589 {
1590         struct qeth_sbp_state_change *qports =
1591                  &cmd->data.sbp.data.state_change;
1592         struct qeth_bridge_state_data *data;
1593         int extrasize;
1594
1595         QETH_CARD_TEXT(card, 2, "brstchng");
1596         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1597                 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1598                 return;
1599         }
1600         extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1601         data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1602                 GFP_ATOMIC);
1603         if (!data) {
1604                 QETH_CARD_TEXT(card, 2, "BPSalloc");
1605                 return;
1606         }
1607         INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1608         data->card = card;
1609         memcpy(&data->qports, qports,
1610                         sizeof(struct qeth_sbp_state_change) + extrasize);
1611         queue_work(qeth_wq, &data->worker);
1612 }
1613
1614 struct qeth_bridge_host_data {
1615         struct work_struct worker;
1616         struct qeth_card *card;
1617         struct qeth_ipacmd_addr_change hostevs;
1618 };
1619
1620 static void qeth_bridge_host_event_worker(struct work_struct *work)
1621 {
1622         struct qeth_bridge_host_data *data =
1623                 container_of(work, struct qeth_bridge_host_data, worker);
1624         int i;
1625
1626         if (data->hostevs.lost_event_mask) {
1627                 dev_info(&data->card->gdev->dev,
1628 "Address notification from the Bridge Port stopped %s (%s)\n",
1629                         data->card->dev->name,
1630                         (data->hostevs.lost_event_mask == 0x01)
1631                         ? "Overflow"
1632                         : (data->hostevs.lost_event_mask == 0x02)
1633                         ? "Bridge port state change"
1634                         : "Unknown reason");
1635                 mutex_lock(&data->card->conf_mutex);
1636                 data->card->options.sbp.hostnotification = 0;
1637                 mutex_unlock(&data->card->conf_mutex);
1638                 qeth_bridge_emit_host_event(data->card, anev_abort,
1639                         0, NULL, NULL);
1640         } else
1641                 for (i = 0; i < data->hostevs.num_entries; i++) {
1642                         struct qeth_ipacmd_addr_change_entry *entry =
1643                                         &data->hostevs.entry[i];
1644                         qeth_bridge_emit_host_event(data->card,
1645                                         anev_reg_unreg,
1646                                         entry->change_code,
1647                                         &entry->token, &entry->addr_lnid);
1648                 }
1649         kfree(data);
1650 }
1651
1652 static void qeth_bridge_host_event(struct qeth_card *card,
1653                                         struct qeth_ipa_cmd *cmd)
1654 {
1655         struct qeth_ipacmd_addr_change *hostevs =
1656                  &cmd->data.addrchange;
1657         struct qeth_bridge_host_data *data;
1658         int extrasize;
1659
1660         QETH_CARD_TEXT(card, 2, "brhostev");
1661         if (cmd->hdr.return_code != 0x0000) {
1662                 if (cmd->hdr.return_code == 0x0010) {
1663                         if (hostevs->lost_event_mask == 0x00)
1664                                 hostevs->lost_event_mask = 0xff;
1665                 } else {
1666                         QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1667                                 cmd->hdr.return_code);
1668                         return;
1669                 }
1670         }
1671         extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1672                                                 hostevs->num_entries;
1673         data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1674                 GFP_ATOMIC);
1675         if (!data) {
1676                 QETH_CARD_TEXT(card, 2, "BPHalloc");
1677                 return;
1678         }
1679         INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1680         data->card = card;
1681         memcpy(&data->hostevs, hostevs,
1682                         sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1683         queue_work(qeth_wq, &data->worker);
1684 }
1685
1686 /* SETBRIDGEPORT support; sending commands */
1687
1688 struct _qeth_sbp_cbctl {
1689         u16 ipa_rc;
1690         u16 cmd_rc;
1691         union {
1692                 u32 supported;
1693                 struct {
1694                         enum qeth_sbp_roles *role;
1695                         enum qeth_sbp_states *state;
1696                 } qports;
1697         } data;
1698 };
1699
1700 /**
1701  * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1702  * @card:                     qeth_card structure pointer, for debug messages.
1703  * @cbctl:                    state structure with hardware return codes.
1704  * @setcmd:                   IPA command code
1705  *
1706  * Returns negative errno-compatible error indication or 0 on success.
1707  */
1708 static int qeth_bridgeport_makerc(struct qeth_card *card,
1709         struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1710 {
1711         int rc;
1712         int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1713
1714         if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1715             (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1716                 switch (cbctl->cmd_rc) {
1717                 case IPA_RC_SUCCESS:
1718                         rc = 0;
1719                         break;
1720                 case IPA_RC_L2_UNSUPPORTED_CMD:
1721                 case IPA_RC_UNSUPPORTED_COMMAND:
1722                         rc = -EOPNOTSUPP;
1723                         break;
1724                 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1725                 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
1726                         rc = -ENODEV; /* maybe not the best code here? */
1727                         dev_err(&card->gdev->dev,
1728         "The device is not configured as a Bridge Port\n");
1729                         break;
1730                 case IPA_RC_SBP_OSA_OS_MISMATCH:
1731                 case IPA_RC_SBP_IQD_OS_MISMATCH:
1732                         rc = -EPERM;
1733                         dev_err(&card->gdev->dev,
1734         "A Bridge Port is already configured by a different operating system\n");
1735                         break;
1736                 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1737                 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
1738                         switch (setcmd) {
1739                         case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1740                                 rc = -EEXIST;
1741                                 dev_err(&card->gdev->dev,
1742         "The LAN already has a primary Bridge Port\n");
1743                                 break;
1744                         case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1745                                 rc = -EBUSY;
1746                                 dev_err(&card->gdev->dev,
1747         "The device is already a primary Bridge Port\n");
1748                                 break;
1749                         default:
1750                                 rc = -EIO;
1751                         }
1752                         break;
1753                 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1754                 case IPA_RC_SBP_IQD_CURRENT_SECOND:
1755                         rc = -EBUSY;
1756                         dev_err(&card->gdev->dev,
1757         "The device is already a secondary Bridge Port\n");
1758                         break;
1759                 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1760                 case IPA_RC_SBP_IQD_LIMIT_SECOND:
1761                         rc = -EEXIST;
1762                         dev_err(&card->gdev->dev,
1763         "The LAN cannot have more secondary Bridge Ports\n");
1764                         break;
1765                 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1766                 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
1767                         rc = -EBUSY;
1768                         dev_err(&card->gdev->dev,
1769         "The device is already a primary Bridge Port\n");
1770                         break;
1771                 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1772                 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
1773                         rc = -EACCES;
1774                         dev_err(&card->gdev->dev,
1775         "The device is not authorized to be a Bridge Port\n");
1776                         break;
1777                 default:
1778                         rc = -EIO;
1779                 }
1780         else
1781                 switch (cbctl->ipa_rc) {
1782                 case IPA_RC_NOTSUPP:
1783                         rc = -EOPNOTSUPP;
1784                         break;
1785                 case IPA_RC_UNSUPPORTED_COMMAND:
1786                         rc = -EOPNOTSUPP;
1787                         break;
1788                 default:
1789                         rc = -EIO;
1790                 }
1791
1792         if (rc) {
1793                 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1794                 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1795         }
1796         return rc;
1797 }
1798
1799 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1800                                                   enum qeth_ipa_sbp_cmd sbp_cmd,
1801                                                   unsigned int cmd_length)
1802 {
1803         enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ?
1804                                         IPA_CMD_SETBRIDGEPORT_IQD :
1805                                         IPA_CMD_SETBRIDGEPORT_OSA;
1806         struct qeth_cmd_buffer *iob;
1807         struct qeth_ipa_cmd *cmd;
1808
1809         iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0);
1810         if (!iob)
1811                 return iob;
1812         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1813         cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1814                                       cmd_length;
1815         cmd->data.sbp.hdr.command_code = sbp_cmd;
1816         cmd->data.sbp.hdr.used_total = 1;
1817         cmd->data.sbp.hdr.seq_no = 1;
1818         return iob;
1819 }
1820
1821 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1822         struct qeth_reply *reply, unsigned long data)
1823 {
1824         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1825         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1826         QETH_CARD_TEXT(card, 2, "brqsupcb");
1827         cbctl->ipa_rc = cmd->hdr.return_code;
1828         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1829         if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1830                 cbctl->data.supported =
1831                         cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1832         } else {
1833                 cbctl->data.supported = 0;
1834         }
1835         return 0;
1836 }
1837
1838 /**
1839  * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1840  * @card:                            qeth_card structure pointer.
1841  *
1842  * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1843  * strucutre: card->options.sbp.supported_funcs.
1844  */
1845 static void qeth_bridgeport_query_support(struct qeth_card *card)
1846 {
1847         struct qeth_cmd_buffer *iob;
1848         struct _qeth_sbp_cbctl cbctl;
1849
1850         QETH_CARD_TEXT(card, 2, "brqsuppo");
1851         iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1852                                  sizeof(struct qeth_sbp_query_cmds_supp));
1853         if (!iob)
1854                 return;
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_sbp_cbctl cbctl = {
1909                 .data = {
1910                         .qports = {
1911                                 .role = role,
1912                                 .state = state,
1913                         },
1914                 },
1915         };
1916
1917         QETH_CARD_TEXT(card, 2, "brqports");
1918         if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1919                 return -EOPNOTSUPP;
1920         iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1921         if (!iob)
1922                 return -ENOMEM;
1923         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1924                                 (void *)&cbctl);
1925         if (rc < 0)
1926                 return rc;
1927         return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1928 }
1929 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1930
1931 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1932         struct qeth_reply *reply, unsigned long data)
1933 {
1934         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1935         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1936         QETH_CARD_TEXT(card, 2, "brsetrcb");
1937         cbctl->ipa_rc = cmd->hdr.return_code;
1938         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1939         return 0;
1940 }
1941
1942 /**
1943  * qeth_bridgeport_setrole() - Assign primary role to the port.
1944  * @card:                      qeth_card structure pointer.
1945  * @role:                      Role to assign.
1946  *
1947  * Returns negative errno-compatible error indication or 0 on success.
1948  */
1949 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1950 {
1951         int rc = 0;
1952         int cmdlength;
1953         struct qeth_cmd_buffer *iob;
1954         struct _qeth_sbp_cbctl cbctl;
1955         enum qeth_ipa_sbp_cmd setcmd;
1956
1957         QETH_CARD_TEXT(card, 2, "brsetrol");
1958         switch (role) {
1959         case QETH_SBP_ROLE_NONE:
1960                 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1961                 cmdlength = sizeof(struct qeth_sbp_reset_role);
1962                 break;
1963         case QETH_SBP_ROLE_PRIMARY:
1964                 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1965                 cmdlength = sizeof(struct qeth_sbp_set_primary);
1966                 break;
1967         case QETH_SBP_ROLE_SECONDARY:
1968                 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1969                 cmdlength = sizeof(struct qeth_sbp_set_secondary);
1970                 break;
1971         default:
1972                 return -EINVAL;
1973         }
1974         if (!(card->options.sbp.supported_funcs & setcmd))
1975                 return -EOPNOTSUPP;
1976         iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1977         if (!iob)
1978                 return -ENOMEM;
1979         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1980                                 (void *)&cbctl);
1981         if (rc < 0)
1982                 return rc;
1983         return qeth_bridgeport_makerc(card, &cbctl, setcmd);
1984 }
1985
1986 /**
1987  * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1988  * @card:                     qeth_card structure pointer, for debug messages.
1989  *
1990  * Returns negative errno-compatible error indication or 0 on success.
1991  */
1992 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1993 {
1994         int rc;
1995
1996         if (pnso_rc == 0)
1997                 switch (response) {
1998                 case 0x0001:
1999                         rc = 0;
2000                         break;
2001                 case 0x0004:
2002                 case 0x0100:
2003                 case 0x0106:
2004                         rc = -EOPNOTSUPP;
2005                         dev_err(&card->gdev->dev,
2006                                 "Setting address notification failed\n");
2007                         break;
2008                 case 0x0107:
2009                         rc = -EAGAIN;
2010                         break;
2011                 default:
2012                         rc = -EIO;
2013                 }
2014         else
2015                 rc = -EIO;
2016
2017         if (rc) {
2018                 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2019                 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2020         }
2021         return rc;
2022 }
2023
2024 static void qeth_bridgeport_an_set_cb(void *priv,
2025                 enum qdio_brinfo_entry_type type, void *entry)
2026 {
2027         struct qeth_card *card = (struct qeth_card *)priv;
2028         struct qdio_brinfo_entry_l2 *l2entry;
2029         u8 code;
2030
2031         if (type != l2_addr_lnid) {
2032                 WARN_ON_ONCE(1);
2033                 return;
2034         }
2035
2036         l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2037         code = IPA_ADDR_CHANGE_CODE_MACADDR;
2038         if (l2entry->addr_lnid.lnid)
2039                 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2040         qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2041                 (struct net_if_token *)&l2entry->nit,
2042                 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2043 }
2044
2045 /**
2046  * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2047  * @card:                     qeth_card structure pointer.
2048  * @enable:                   0 - disable, non-zero - enable notifications
2049  *
2050  * Returns negative errno-compatible error indication or 0 on success.
2051  *
2052  * On enable, emits a series of address notifications udev events for all
2053  * currently registered hosts.
2054  */
2055 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2056 {
2057         int rc;
2058         u16 response;
2059         struct ccw_device *ddev;
2060         struct subchannel_id schid;
2061
2062         if (!card)
2063                 return -EINVAL;
2064         if (!card->options.sbp.supported_funcs)
2065                 return -EOPNOTSUPP;
2066         ddev = CARD_DDEV(card);
2067         ccw_device_get_schid(ddev, &schid);
2068
2069         if (enable) {
2070                 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2071                 rc = qdio_pnso_brinfo(schid, 1, &response,
2072                         qeth_bridgeport_an_set_cb, card);
2073         } else
2074                 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2075         return qeth_anset_makerc(card, rc, response);
2076 }
2077 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2078
2079 static bool qeth_bridgeport_is_in_use(struct qeth_card *card)
2080 {
2081         return (card->options.sbp.role || card->options.sbp.reflect_promisc ||
2082                 card->options.sbp.hostnotification);
2083 }
2084
2085 /* VNIC Characteristics support */
2086
2087 /* handle VNICC IPA command return codes; convert to error codes */
2088 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc)
2089 {
2090         int rc;
2091
2092         switch (ipa_rc) {
2093         case IPA_RC_SUCCESS:
2094                 return ipa_rc;
2095         case IPA_RC_L2_UNSUPPORTED_CMD:
2096         case IPA_RC_NOTSUPP:
2097                 rc = -EOPNOTSUPP;
2098                 break;
2099         case IPA_RC_VNICC_OOSEQ:
2100                 rc = -EALREADY;
2101                 break;
2102         case IPA_RC_VNICC_VNICBP:
2103                 rc = -EBUSY;
2104                 break;
2105         case IPA_RC_L2_ADDR_TABLE_FULL:
2106                 rc = -ENOSPC;
2107                 break;
2108         case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
2109                 rc = -EACCES;
2110                 break;
2111         default:
2112                 rc = -EIO;
2113         }
2114
2115         QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
2116         return rc;
2117 }
2118
2119 /* generic VNICC request call back control */
2120 struct _qeth_l2_vnicc_request_cbctl {
2121         u32 sub_cmd;
2122         struct {
2123                 u32 vnic_char;
2124                 u32 timeout;
2125         } param;
2126         struct {
2127                 union{
2128                         u32 *sup_cmds;
2129                         u32 *timeout;
2130                 };
2131         } result;
2132 };
2133
2134 /* generic VNICC request call back */
2135 static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
2136                                     struct qeth_reply *reply,
2137                                     unsigned long data)
2138 {
2139         struct _qeth_l2_vnicc_request_cbctl *cbctl =
2140                 (struct _qeth_l2_vnicc_request_cbctl *) reply->param;
2141         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
2142         struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
2143
2144         QETH_CARD_TEXT(card, 2, "vniccrcb");
2145         if (cmd->hdr.return_code)
2146                 return 0;
2147         /* return results to caller */
2148         card->options.vnicc.sup_chars = rep->hdr.sup;
2149         card->options.vnicc.cur_chars = rep->hdr.cur;
2150
2151         if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS)
2152                 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds;
2153
2154         if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT)
2155                 *cbctl->result.timeout = rep->getset_timeout.timeout;
2156
2157         return 0;
2158 }
2159
2160 /* generic VNICC request */
2161 static int qeth_l2_vnicc_request(struct qeth_card *card,
2162                                  struct _qeth_l2_vnicc_request_cbctl *cbctl)
2163 {
2164         struct qeth_ipacmd_vnicc *req;
2165         struct qeth_cmd_buffer *iob;
2166         struct qeth_ipa_cmd *cmd;
2167         int rc;
2168
2169         QETH_CARD_TEXT(card, 2, "vniccreq");
2170
2171         /* get new buffer for request */
2172         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0);
2173         if (!iob)
2174                 return -ENOMEM;
2175
2176         /* create header for request */
2177         cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
2178         req = &cmd->data.vnicc;
2179
2180         /* create sub command header for request */
2181         req->sub_hdr.data_length = sizeof(req->sub_hdr);
2182         req->sub_hdr.sub_command = cbctl->sub_cmd;
2183
2184         /* create sub command specific request fields */
2185         switch (cbctl->sub_cmd) {
2186         case IPA_VNICC_QUERY_CHARS:
2187                 break;
2188         case IPA_VNICC_QUERY_CMDS:
2189                 req->sub_hdr.data_length += sizeof(req->query_cmds);
2190                 req->query_cmds.vnic_char = cbctl->param.vnic_char;
2191                 break;
2192         case IPA_VNICC_ENABLE:
2193         case IPA_VNICC_DISABLE:
2194                 req->sub_hdr.data_length += sizeof(req->set_char);
2195                 req->set_char.vnic_char = cbctl->param.vnic_char;
2196                 break;
2197         case IPA_VNICC_SET_TIMEOUT:
2198                 req->getset_timeout.timeout = cbctl->param.timeout;
2199                 /* fallthrough */
2200         case IPA_VNICC_GET_TIMEOUT:
2201                 req->sub_hdr.data_length += sizeof(req->getset_timeout);
2202                 req->getset_timeout.vnic_char = cbctl->param.vnic_char;
2203                 break;
2204         default:
2205                 qeth_release_buffer(iob->channel, iob);
2206                 return -EOPNOTSUPP;
2207         }
2208
2209         /* send request */
2210         rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb,
2211                                (void *) cbctl);
2212
2213         return qeth_l2_vnicc_makerc(card, rc);
2214 }
2215
2216 /* VNICC query VNIC characteristics request */
2217 static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
2218 {
2219         struct _qeth_l2_vnicc_request_cbctl cbctl;
2220
2221         /* prepare callback control */
2222         cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS;
2223
2224         QETH_CARD_TEXT(card, 2, "vniccqch");
2225         return qeth_l2_vnicc_request(card, &cbctl);
2226 }
2227
2228 /* VNICC query sub commands request */
2229 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
2230                                     u32 *sup_cmds)
2231 {
2232         struct _qeth_l2_vnicc_request_cbctl cbctl;
2233
2234         /* prepare callback control */
2235         cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS;
2236         cbctl.param.vnic_char = vnic_char;
2237         cbctl.result.sup_cmds = sup_cmds;
2238
2239         QETH_CARD_TEXT(card, 2, "vniccqcm");
2240         return qeth_l2_vnicc_request(card, &cbctl);
2241 }
2242
2243 /* VNICC enable/disable characteristic request */
2244 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
2245                                       u32 cmd)
2246 {
2247         struct _qeth_l2_vnicc_request_cbctl cbctl;
2248
2249         /* prepare callback control */
2250         cbctl.sub_cmd = cmd;
2251         cbctl.param.vnic_char = vnic_char;
2252
2253         QETH_CARD_TEXT(card, 2, "vniccedc");
2254         return qeth_l2_vnicc_request(card, &cbctl);
2255 }
2256
2257 /* VNICC get/set timeout for characteristic request */
2258 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
2259                                         u32 cmd, u32 *timeout)
2260 {
2261         struct _qeth_l2_vnicc_request_cbctl cbctl;
2262
2263         /* prepare callback control */
2264         cbctl.sub_cmd = cmd;
2265         cbctl.param.vnic_char = vnicc;
2266         if (cmd == IPA_VNICC_SET_TIMEOUT)
2267                 cbctl.param.timeout = *timeout;
2268         if (cmd == IPA_VNICC_GET_TIMEOUT)
2269                 cbctl.result.timeout = timeout;
2270
2271         QETH_CARD_TEXT(card, 2, "vniccgst");
2272         return qeth_l2_vnicc_request(card, &cbctl);
2273 }
2274
2275 /* set current VNICC flag state; called from sysfs store function */
2276 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
2277 {
2278         int rc = 0;
2279         u32 cmd;
2280
2281         QETH_CARD_TEXT(card, 2, "vniccsch");
2282
2283         /* do not change anything if BridgePort is enabled */
2284         if (qeth_bridgeport_is_in_use(card))
2285                 return -EBUSY;
2286
2287         /* check if characteristic and enable/disable are supported */
2288         if (!(card->options.vnicc.sup_chars & vnicc) ||
2289             !(card->options.vnicc.set_char_sup & vnicc))
2290                 return -EOPNOTSUPP;
2291
2292         /* set enable/disable command and store wanted characteristic */
2293         if (state) {
2294                 cmd = IPA_VNICC_ENABLE;
2295                 card->options.vnicc.wanted_chars |= vnicc;
2296         } else {
2297                 cmd = IPA_VNICC_DISABLE;
2298                 card->options.vnicc.wanted_chars &= ~vnicc;
2299         }
2300
2301         /* do we need to do anything? */
2302         if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
2303                 return rc;
2304
2305         /* if card is not ready, simply stop here */
2306         if (!qeth_card_hw_is_reachable(card)) {
2307                 if (state)
2308                         card->options.vnicc.cur_chars |= vnicc;
2309                 else
2310                         card->options.vnicc.cur_chars &= ~vnicc;
2311                 return rc;
2312         }
2313
2314         rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
2315         if (rc)
2316                 card->options.vnicc.wanted_chars =
2317                         card->options.vnicc.cur_chars;
2318         else {
2319                 /* successful online VNICC change; handle special cases */
2320                 if (state && vnicc == QETH_VNICC_RX_BCAST)
2321                         card->options.vnicc.rx_bcast_enabled = true;
2322                 if (!state && vnicc == QETH_VNICC_LEARNING)
2323                         qeth_l2_vnicc_recover_timeout(card, vnicc,
2324                                         &card->options.vnicc.learning_timeout);
2325         }
2326
2327         return rc;
2328 }
2329
2330 /* get current VNICC flag state; called from sysfs show function */
2331 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
2332 {
2333         int rc = 0;
2334
2335         QETH_CARD_TEXT(card, 2, "vniccgch");
2336
2337         /* do not get anything if BridgePort is enabled */
2338         if (qeth_bridgeport_is_in_use(card))
2339                 return -EBUSY;
2340
2341         /* check if characteristic is supported */
2342         if (!(card->options.vnicc.sup_chars & vnicc))
2343                 return -EOPNOTSUPP;
2344
2345         /* if card is ready, query current VNICC state */
2346         if (qeth_card_hw_is_reachable(card))
2347                 rc = qeth_l2_vnicc_query_chars(card);
2348
2349         *state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
2350         return rc;
2351 }
2352
2353 /* set VNICC timeout; called from sysfs store function. Currently, only learning
2354  * supports timeout
2355  */
2356 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
2357 {
2358         int rc = 0;
2359
2360         QETH_CARD_TEXT(card, 2, "vniccsto");
2361
2362         /* do not change anything if BridgePort is enabled */
2363         if (qeth_bridgeport_is_in_use(card))
2364                 return -EBUSY;
2365
2366         /* check if characteristic and set_timeout are supported */
2367         if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2368             !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2369                 return -EOPNOTSUPP;
2370
2371         /* do we need to do anything? */
2372         if (card->options.vnicc.learning_timeout == timeout)
2373                 return rc;
2374
2375         /* if card is not ready, simply store the value internally and return */
2376         if (!qeth_card_hw_is_reachable(card)) {
2377                 card->options.vnicc.learning_timeout = timeout;
2378                 return rc;
2379         }
2380
2381         /* send timeout value to card; if successful, store value internally */
2382         rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2383                                           IPA_VNICC_SET_TIMEOUT, &timeout);
2384         if (!rc)
2385                 card->options.vnicc.learning_timeout = timeout;
2386
2387         return rc;
2388 }
2389
2390 /* get current VNICC timeout; called from sysfs show function. Currently, only
2391  * learning supports timeout
2392  */
2393 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
2394 {
2395         int rc = 0;
2396
2397         QETH_CARD_TEXT(card, 2, "vniccgto");
2398
2399         /* do not get anything if BridgePort is enabled */
2400         if (qeth_bridgeport_is_in_use(card))
2401                 return -EBUSY;
2402
2403         /* check if characteristic and get_timeout are supported */
2404         if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2405             !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2406                 return -EOPNOTSUPP;
2407         /* if card is ready, get timeout. Otherwise, just return stored value */
2408         *timeout = card->options.vnicc.learning_timeout;
2409         if (qeth_card_hw_is_reachable(card))
2410                 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2411                                                   IPA_VNICC_GET_TIMEOUT,
2412                                                   timeout);
2413
2414         return rc;
2415 }
2416
2417 /* check if VNICC is currently enabled */
2418 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card)
2419 {
2420         /* if everything is turned off, VNICC is not active */
2421         if (!card->options.vnicc.cur_chars)
2422                 return false;
2423         /* default values are only OK if rx_bcast was not enabled by user
2424          * or the card is offline.
2425          */
2426         if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
2427                 if (!card->options.vnicc.rx_bcast_enabled ||
2428                     !qeth_card_hw_is_reachable(card))
2429                         return false;
2430         }
2431         return true;
2432 }
2433
2434 /* recover user timeout setting */
2435 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
2436                                           u32 *timeout)
2437 {
2438         if (card->options.vnicc.sup_chars & vnicc &&
2439             card->options.vnicc.getset_timeout_sup & vnicc &&
2440             !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
2441                                           timeout))
2442                 return false;
2443         *timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2444         return true;
2445 }
2446
2447 /* recover user characteristic setting */
2448 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
2449                                        bool enable)
2450 {
2451         u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
2452
2453         if (card->options.vnicc.sup_chars & vnicc &&
2454             card->options.vnicc.set_char_sup & vnicc &&
2455             !qeth_l2_vnicc_set_char(card, vnicc, cmd))
2456                 return false;
2457         card->options.vnicc.wanted_chars &= ~vnicc;
2458         card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
2459         return true;
2460 }
2461
2462 /* (re-)initialize VNICC */
2463 static void qeth_l2_vnicc_init(struct qeth_card *card)
2464 {
2465         u32 *timeout = &card->options.vnicc.learning_timeout;
2466         unsigned int chars_len, i;
2467         unsigned long chars_tmp;
2468         u32 sup_cmds, vnicc;
2469         bool enable, error;
2470
2471         QETH_CARD_TEXT(card, 2, "vniccini");
2472         /* reset rx_bcast */
2473         card->options.vnicc.rx_bcast_enabled = 0;
2474         /* initial query and storage of VNIC characteristics */
2475         if (qeth_l2_vnicc_query_chars(card)) {
2476                 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
2477                     *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
2478                         dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2479                 /* fail quietly if user didn't change the default config */
2480                 card->options.vnicc.sup_chars = 0;
2481                 card->options.vnicc.cur_chars = 0;
2482                 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2483                 return;
2484         }
2485         /* get supported commands for each supported characteristic */
2486         chars_tmp = card->options.vnicc.sup_chars;
2487         chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
2488         for_each_set_bit(i, &chars_tmp, chars_len) {
2489                 vnicc = BIT(i);
2490                 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds);
2491                 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) ||
2492                     !(sup_cmds & IPA_VNICC_GET_TIMEOUT))
2493                         card->options.vnicc.getset_timeout_sup &= ~vnicc;
2494                 if (!(sup_cmds & IPA_VNICC_ENABLE) ||
2495                     !(sup_cmds & IPA_VNICC_DISABLE))
2496                         card->options.vnicc.set_char_sup &= ~vnicc;
2497         }
2498         /* enforce assumed default values and recover settings, if changed  */
2499         error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
2500                                               timeout);
2501         chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT;
2502         chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE;
2503         chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
2504         for_each_set_bit(i, &chars_tmp, chars_len) {
2505                 vnicc = BIT(i);
2506                 enable = card->options.vnicc.wanted_chars & vnicc;
2507                 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
2508         }
2509         if (error)
2510                 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2511 }
2512
2513 /* configure default values of VNIC characteristics */
2514 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
2515 {
2516         /* characteristics values */
2517         card->options.vnicc.sup_chars = QETH_VNICC_ALL;
2518         card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
2519         card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2520         /* supported commands */
2521         card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
2522         card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
2523         /* settings wanted by users */
2524         card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2525 }
2526
2527 module_init(qeth_l2_init);
2528 module_exit(qeth_l2_exit);
2529 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2530 MODULE_DESCRIPTION("qeth layer 2 discipline");
2531 MODULE_LICENSE("GPL");