drivers/s390/net/qeth_l2_main.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *    Copyright IBM Corp. 2007, 2009
   4  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   5  *               Frank Pavlic <fpavlic@de.ibm.com>,
   6  *               Thomas Spatzier <tspat@de.ibm.com>,
   7  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   8  */
   9
  10 #define KMSG_COMPONENT "qeth"
  11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  12
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/slab.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/list.h>
  21 #include <linux/hash.h>
  22 #include <linux/hashtable.h>
  23 #include <asm/setup.h>
  24 #include "qeth_core.h"
  25 #include "qeth_l2.h"
  26
  27 static int qeth_l2_set_offline(struct ccwgroup_device *);
  28 static int qeth_l2_stop(struct net_device *);
  29 static void qeth_bridgeport_query_support(struct qeth_card *card);
  30 static void qeth_bridge_state_change(struct qeth_card *card,
  31                                         struct qeth_ipa_cmd *cmd);
  32 static void qeth_bridge_host_event(struct qeth_card *card,
  33                                         struct qeth_ipa_cmd *cmd);
  34 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card);
  35 static void qeth_l2_vnicc_init(struct qeth_card *card);
  36 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
  37                                           u32 *timeout);
  38
  39 static int qeth_setdelmac_makerc(struct qeth_card *card, int retcode)
  40 {
  41         int rc;
  42
  43         if (retcode)
  44                 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
  45         switch (retcode) {
  46         case IPA_RC_SUCCESS:
  47                 rc = 0;
  48                 break;
  49         case IPA_RC_L2_UNSUPPORTED_CMD:
  50                 rc = -EOPNOTSUPP;
  51                 break;
  52         case IPA_RC_L2_ADDR_TABLE_FULL:
  53                 rc = -ENOSPC;
  54                 break;
  55         case IPA_RC_L2_DUP_MAC:
  56         case IPA_RC_L2_DUP_LAYER3_MAC:
  57                 rc = -EEXIST;
  58                 break;
  59         case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
  60         case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
  61                 rc = -EPERM;
  62                 break;
  63         case IPA_RC_L2_MAC_NOT_FOUND:
  64                 rc = -ENOENT;
  65                 break;
  66         case -ENOMEM:
  67                 rc = -ENOMEM;
  68                 break;
  69         default:
  70                 rc = -EIO;
  71                 break;
  72         }
  73         return rc;
  74 }
  75
  76 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
  77                            enum qeth_ipa_cmds ipacmd)
  78 {
  79         struct qeth_ipa_cmd *cmd;
  80         struct qeth_cmd_buffer *iob;
  81
  82         QETH_CARD_TEXT(card, 2, "L2sdmac");
  83         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
  84         if (!iob)
  85                 return -ENOMEM;
  86         cmd = __ipa_cmd(iob);
  87         cmd->data.setdelmac.mac_length = ETH_ALEN;
  88         ether_addr_copy(cmd->data.setdelmac.mac, mac);
  89         return qeth_setdelmac_makerc(card, qeth_send_ipa_cmd(card, iob,
  90                                            NULL, NULL));
  91 }
  92
  93 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
  94 {
  95         int rc;
  96
  97         QETH_CARD_TEXT(card, 2, "L2Setmac");
  98         rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
  99         if (rc == 0) {
 100                 dev_info(&card->gdev->dev,
 101                          "MAC address %pM successfully registered on device %s\n",
 102                          mac, card->dev->name);
 103         } else {
 104                 switch (rc) {
 105                 case -EEXIST:
 106                         dev_warn(&card->gdev->dev,
 107                                 "MAC address %pM already exists\n", mac);
 108                         break;
 109                 case -EPERM:
 110                         dev_warn(&card->gdev->dev,
 111                                 "MAC address %pM is not authorized\n", mac);
 112                         break;
 113                 }
 114         }
 115         return rc;
 116 }
 117
 118 static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac)
 119 {
 120         enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
 121                                         IPA_CMD_SETGMAC : IPA_CMD_SETVMAC;
 122         int rc;
 123
 124         QETH_CARD_TEXT(card, 2, "L2Wmac");
 125         rc = qeth_l2_send_setdelmac(card, mac, cmd);
 126         if (rc == -EEXIST)
 127                 QETH_DBF_MESSAGE(2, "MAC already registered on device %x\n",
 128                                  CARD_DEVID(card));
 129         else if (rc)
 130                 QETH_DBF_MESSAGE(2, "Failed to register MAC on device %x: %d\n",
 131                                  CARD_DEVID(card), rc);
 132         return rc;
 133 }
 134
 135 static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac)
 136 {
 137         enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ?
 138                                         IPA_CMD_DELGMAC : IPA_CMD_DELVMAC;
 139         int rc;
 140
 141         QETH_CARD_TEXT(card, 2, "L2Rmac");
 142         rc = qeth_l2_send_setdelmac(card, mac, cmd);
 143         if (rc)
 144                 QETH_DBF_MESSAGE(2, "Failed to delete MAC on device %u: %d\n",
 145                                  CARD_DEVID(card), rc);
 146         return rc;
 147 }
 148
 149 static void qeth_l2_del_all_macs(struct qeth_card *card)
 150 {
 151         struct qeth_mac *mac;
 152         struct hlist_node *tmp;
 153         int i;
 154
 155         spin_lock_bh(&card->mclock);
 156         hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
 157                 hash_del(&mac->hnode);
 158                 kfree(mac);
 159         }
 160         spin_unlock_bh(&card->mclock);
 161 }
 162
 163 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
 164 {
 165         if (card->info.type == QETH_CARD_TYPE_OSN)
 166                 return RTN_UNICAST;
 167         if (is_broadcast_ether_addr(skb->data))
 168                 return RTN_BROADCAST;
 169         if (is_multicast_ether_addr(skb->data))
 170                 return RTN_MULTICAST;
 171         return RTN_UNICAST;
 172 }
 173
 174 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
 175                                 struct sk_buff *skb, int ipv, int cast_type,
 176                                 unsigned int data_len)
 177 {
 178         struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
 179
 180         hdr->hdr.l2.pkt_length = data_len;
 181
 182         if (skb_is_gso(skb)) {
 183                 hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO;
 184         } else {
 185                 hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
 186                 if (skb->ip_summed == CHECKSUM_PARTIAL) {
 187                         qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv);
 188                         if (card->options.performance_stats)
 189                                 card->perf_stats.tx_csum++;
 190                 }
 191         }
 192
 193         /* set byte byte 3 to casting flags */
 194         if (cast_type == RTN_MULTICAST)
 195                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 196         else if (cast_type == RTN_BROADCAST)
 197                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
 198         else
 199                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 200
 201         /* VSWITCH relies on the VLAN
 202          * information to be present in
 203          * the QDIO header */
 204         if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
 205                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
 206                 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
 207         }
 208 }
 209
 210 static int qeth_setdelvlan_makerc(struct qeth_card *card, int retcode)
 211 {
 212         if (retcode)
 213                 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
 214
 215         switch (retcode) {
 216         case IPA_RC_SUCCESS:
 217                 return 0;
 218         case IPA_RC_L2_INVALID_VLAN_ID:
 219                 return -EINVAL;
 220         case IPA_RC_L2_DUP_VLAN_ID:
 221                 return -EEXIST;
 222         case IPA_RC_L2_VLAN_ID_NOT_FOUND:
 223                 return -ENOENT;
 224         case IPA_RC_L2_VLAN_ID_NOT_ALLOWED:
 225                 return -EPERM;
 226         case -ENOMEM:
 227                 return -ENOMEM;
 228         default:
 229                 return -EIO;
 230         }
 231 }
 232
 233 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
 234                                       struct qeth_reply *reply,
 235                                       unsigned long data)
 236 {
 237         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
 238
 239         QETH_CARD_TEXT(card, 2, "L2sdvcb");
 240         if (cmd->hdr.return_code) {
 241                 QETH_DBF_MESSAGE(2, "Error in processing VLAN %u on device %x: %#x.\n",
 242                                  cmd->data.setdelvlan.vlan_id,
 243                                  CARD_DEVID(card), cmd->hdr.return_code);
 244                 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
 245                 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
 246         }
 247         return 0;
 248 }
 249
 250 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
 251                                    enum qeth_ipa_cmds ipacmd)
 252 {
 253         struct qeth_ipa_cmd *cmd;
 254         struct qeth_cmd_buffer *iob;
 255
 256         QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
 257         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 258         if (!iob)
 259                 return -ENOMEM;
 260         cmd = __ipa_cmd(iob);
 261         cmd->data.setdelvlan.vlan_id = i;
 262         return qeth_setdelvlan_makerc(card, qeth_send_ipa_cmd(card, iob,
 263                                             qeth_l2_send_setdelvlan_cb, NULL));
 264 }
 265
 266 static void qeth_l2_process_vlans(struct qeth_card *card)
 267 {
 268         struct qeth_vlan_vid *id;
 269
 270         QETH_CARD_TEXT(card, 3, "L2prcvln");
 271         mutex_lock(&card->vid_list_mutex);
 272         list_for_each_entry(id, &card->vid_list, list) {
 273                 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
 274         }
 275         mutex_unlock(&card->vid_list_mutex);
 276 }
 277
 278 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
 279                                    __be16 proto, u16 vid)
 280 {
 281         struct qeth_card *card = dev->ml_priv;
 282         struct qeth_vlan_vid *id;
 283         int rc;
 284
 285         QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
 286         if (!vid)
 287                 return 0;
 288         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 289                 QETH_CARD_TEXT(card, 3, "aidREC");
 290                 return 0;
 291         }
 292         id = kmalloc(sizeof(*id), GFP_KERNEL);
 293         if (id) {
 294                 id->vid = vid;
 295                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
 296                 if (rc) {
 297                         kfree(id);
 298                         return rc;
 299                 }
 300                 mutex_lock(&card->vid_list_mutex);
 301                 list_add_tail(&id->list, &card->vid_list);
 302                 mutex_unlock(&card->vid_list_mutex);
 303         } else {
 304                 return -ENOMEM;
 305         }
 306         return 0;
 307 }
 308
 309 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
 310                                     __be16 proto, u16 vid)
 311 {
 312         struct qeth_vlan_vid *id, *tmpid = NULL;
 313         struct qeth_card *card = dev->ml_priv;
 314         int rc = 0;
 315
 316         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
 317         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 318                 QETH_CARD_TEXT(card, 3, "kidREC");
 319                 return 0;
 320         }
 321         mutex_lock(&card->vid_list_mutex);
 322         list_for_each_entry(id, &card->vid_list, list) {
 323                 if (id->vid == vid) {
 324                         list_del(&id->list);
 325                         tmpid = id;
 326                         break;
 327                 }
 328         }
 329         mutex_unlock(&card->vid_list_mutex);
 330         if (tmpid) {
 331                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
 332                 kfree(tmpid);
 333         }
 334         return rc;
 335 }
 336
 337 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
 338 {
 339         QETH_DBF_TEXT(SETUP , 2, "stopcard");
 340         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 341
 342         qeth_set_allowed_threads(card, 0, 1);
 343         if (card->read.state == CH_STATE_UP &&
 344             card->write.state == CH_STATE_UP &&
 345             (card->state == CARD_STATE_UP)) {
 346                 if (recovery_mode &&
 347                     card->info.type != QETH_CARD_TYPE_OSN) {
 348                         qeth_l2_stop(card->dev);
 349                 } else {
 350                         rtnl_lock();
 351                         dev_close(card->dev);
 352                         rtnl_unlock();
 353                 }
 354                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 355                 card->state = CARD_STATE_SOFTSETUP;
 356         }
 357         if (card->state == CARD_STATE_SOFTSETUP) {
 358                 qeth_l2_del_all_macs(card);
 359                 qeth_clear_ipacmd_list(card);
 360                 card->state = CARD_STATE_HARDSETUP;
 361         }
 362         if (card->state == CARD_STATE_HARDSETUP) {
 363                 qeth_qdio_clear_card(card, 0);
 364                 qeth_clear_qdio_buffers(card);
 365                 qeth_clear_working_pool_list(card);
 366                 card->state = CARD_STATE_DOWN;
 367         }
 368         if (card->state == CARD_STATE_DOWN) {
 369                 qeth_clear_cmd_buffers(&card->read);
 370                 qeth_clear_cmd_buffers(&card->write);
 371         }
 372
 373         flush_workqueue(card->event_wq);
 374 }
 375
 376 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
 377                                 int budget, int *done)
 378 {
 379         int work_done = 0;
 380         struct sk_buff *skb;
 381         struct qeth_hdr *hdr;
 382         unsigned int len;
 383
 384         *done = 0;
 385         WARN_ON_ONCE(!budget);
 386         while (budget) {
 387                 skb = qeth_core_get_next_skb(card,
 388                         &card->qdio.in_q->bufs[card->rx.b_index],
 389                         &card->rx.b_element, &card->rx.e_offset, &hdr);
 390                 if (!skb) {
 391                         *done = 1;
 392                         break;
 393                 }
 394                 switch (hdr->hdr.l2.id) {
 395                 case QETH_HEADER_TYPE_LAYER2:
 396                         skb->protocol = eth_type_trans(skb, skb->dev);
 397                         qeth_rx_csum(card, skb, hdr->hdr.l2.flags[1]);
 398                         if (skb->protocol == htons(ETH_P_802_2))
 399                                 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
 400                         len = skb->len;
 401                         napi_gro_receive(&card->napi, skb);
 402                         break;
 403                 case QETH_HEADER_TYPE_OSN:
 404                         if (card->info.type == QETH_CARD_TYPE_OSN) {
 405                                 skb_push(skb, sizeof(struct qeth_hdr));
 406                                 skb_copy_to_linear_data(skb, hdr,
 407                                                 sizeof(struct qeth_hdr));
 408                                 len = skb->len;
 409                                 card->osn_info.data_cb(skb);
 410                                 break;
 411                         }
 412                         /* else unknown */
 413                 default:
 414                         dev_kfree_skb_any(skb);
 415                         QETH_CARD_TEXT(card, 3, "inbunkno");
 416                         QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr));
 417                         continue;
 418                 }
 419                 work_done++;
 420                 budget--;
 421                 card->stats.rx_packets++;
 422                 card->stats.rx_bytes += len;
 423         }
 424         return work_done;
 425 }
 426
 427 static int qeth_l2_request_initial_mac(struct qeth_card *card)
 428 {
 429         int rc = 0;
 430
 431         QETH_DBF_TEXT(SETUP, 2, "l2reqmac");
 432         QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
 433
 434         if (MACHINE_IS_VM) {
 435                 rc = qeth_vm_request_mac(card);
 436                 if (!rc)
 437                         goto out;
 438                 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n",
 439                                  CARD_DEVID(card), rc);
 440                 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc);
 441                 /* fall back to alternative mechanism: */
 442         }
 443
 444         if (!IS_OSN(card)) {
 445                 rc = qeth_setadpparms_change_macaddr(card);
 446                 if (!rc && is_valid_ether_addr(card->dev->dev_addr))
 447                         goto out;
 448                 QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n",
 449                                  CARD_DEVID(card), rc);
 450                 QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
 451                 /* fall back once more: */
 452         }
 453
 454         /* some devices don't support a custom MAC address: */
 455         if (card->info.type == QETH_CARD_TYPE_OSM ||
 456             card->info.type == QETH_CARD_TYPE_OSX)
 457                 return (rc) ? rc : -EADDRNOTAVAIL;
 458         eth_hw_addr_random(card->dev);
 459
 460 out:
 461         QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len);
 462         return 0;
 463 }
 464
 465 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
 466 {
 467         struct sockaddr *addr = p;
 468         struct qeth_card *card = dev->ml_priv;
 469         u8 old_addr[ETH_ALEN];
 470         int rc = 0;
 471
 472         QETH_CARD_TEXT(card, 3, "setmac");
 473
 474         if (card->info.type == QETH_CARD_TYPE_OSN ||
 475             card->info.type == QETH_CARD_TYPE_OSM ||
 476             card->info.type == QETH_CARD_TYPE_OSX) {
 477                 QETH_CARD_TEXT(card, 3, "setmcTYP");
 478                 return -EOPNOTSUPP;
 479         }
 480         QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN);
 481         if (!is_valid_ether_addr(addr->sa_data))
 482                 return -EADDRNOTAVAIL;
 483
 484         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 485                 QETH_CARD_TEXT(card, 3, "setmcREC");
 486                 return -ERESTARTSYS;
 487         }
 488
 489         /* avoid racing against concurrent state change: */
 490         if (!mutex_trylock(&card->conf_mutex))
 491                 return -EAGAIN;
 492
 493         if (!qeth_card_hw_is_reachable(card)) {
 494                 ether_addr_copy(dev->dev_addr, addr->sa_data);
 495                 goto out_unlock;
 496         }
 497
 498         /* don't register the same address twice */
 499         if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) &&
 500             (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
 501                 goto out_unlock;
 502
 503         /* add the new address, switch over, drop the old */
 504         rc = qeth_l2_send_setmac(card, addr->sa_data);
 505         if (rc)
 506                 goto out_unlock;
 507         ether_addr_copy(old_addr, dev->dev_addr);
 508         ether_addr_copy(dev->dev_addr, addr->sa_data);
 509
 510         if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)
 511                 qeth_l2_remove_mac(card, old_addr);
 512         card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 513
 514 out_unlock:
 515         mutex_unlock(&card->conf_mutex);
 516         return rc;
 517 }
 518
 519 static void qeth_promisc_to_bridge(struct qeth_card *card)
 520 {
 521         struct net_device *dev = card->dev;
 522         enum qeth_ipa_promisc_modes promisc_mode;
 523         int role;
 524         int rc;
 525
 526         QETH_CARD_TEXT(card, 3, "pmisc2br");
 527
 528         if (!card->options.sbp.reflect_promisc)
 529                 return;
 530         promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
 531                                                 : SET_PROMISC_MODE_OFF;
 532         if (promisc_mode == card->info.promisc_mode)
 533                 return;
 534
 535         if (promisc_mode == SET_PROMISC_MODE_ON) {
 536                 if (card->options.sbp.reflect_promisc_primary)
 537                         role = QETH_SBP_ROLE_PRIMARY;
 538                 else
 539                         role = QETH_SBP_ROLE_SECONDARY;
 540         } else
 541                 role = QETH_SBP_ROLE_NONE;
 542
 543         rc = qeth_bridgeport_setrole(card, role);
 544         QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
 545                         (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
 546         if (!rc) {
 547                 card->options.sbp.role = role;
 548                 card->info.promisc_mode = promisc_mode;
 549         }
 550
 551 }
 552 /* New MAC address is added to the hash table and marked to be written on card
 553  * only if there is not in the hash table storage already
 554  *
 555 */
 556 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha)
 557 {
 558         u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
 559         struct qeth_mac *mac;
 560
 561         hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) {
 562                 if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) {
 563                         mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 564                         return;
 565                 }
 566         }
 567
 568         mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
 569         if (!mac)
 570                 return;
 571
 572         ether_addr_copy(mac->mac_addr, ha->addr);
 573         mac->disp_flag = QETH_DISP_ADDR_ADD;
 574
 575         hash_add(card->mac_htable, &mac->hnode, mac_hash);
 576 }
 577
 578 static void qeth_l2_set_rx_mode(struct net_device *dev)
 579 {
 580         struct qeth_card *card = dev->ml_priv;
 581         struct netdev_hw_addr *ha;
 582         struct qeth_mac *mac;
 583         struct hlist_node *tmp;
 584         int i;
 585         int rc;
 586
 587         if (card->info.type == QETH_CARD_TYPE_OSN)
 588                 return;
 589
 590         QETH_CARD_TEXT(card, 3, "setmulti");
 591         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
 592             (card->state != CARD_STATE_UP))
 593                 return;
 594
 595         spin_lock_bh(&card->mclock);
 596
 597         netdev_for_each_mc_addr(ha, dev)
 598                 qeth_l2_add_mac(card, ha);
 599         netdev_for_each_uc_addr(ha, dev)
 600                 qeth_l2_add_mac(card, ha);
 601
 602         hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
 603                 switch (mac->disp_flag) {
 604                 case QETH_DISP_ADDR_DELETE:
 605                         qeth_l2_remove_mac(card, mac->mac_addr);
 606                         hash_del(&mac->hnode);
 607                         kfree(mac);
 608                         break;
 609                 case QETH_DISP_ADDR_ADD:
 610                         rc = qeth_l2_write_mac(card, mac->mac_addr);
 611                         if (rc) {
 612                                 hash_del(&mac->hnode);
 613                                 kfree(mac);
 614                                 break;
 615                         }
 616                         /* fall through */
 617                 default:
 618                         /* for next call to set_rx_mode(): */
 619                         mac->disp_flag = QETH_DISP_ADDR_DELETE;
 620                 }
 621         }
 622
 623         spin_unlock_bh(&card->mclock);
 624
 625         if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 626                 qeth_setadp_promisc_mode(card);
 627         else
 628                 qeth_promisc_to_bridge(card);
 629 }
 630
 631 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
 632                             struct qeth_qdio_out_q *queue)
 633 {
 634         struct qeth_hdr *hdr = (struct qeth_hdr *)skb->data;
 635         addr_t end = (addr_t)(skb->data + sizeof(*hdr));
 636         addr_t start = (addr_t)skb->data;
 637         unsigned int elements = 0;
 638         unsigned int hd_len = 0;
 639         int rc;
 640
 641         if (skb->protocol == htons(ETH_P_IPV6))
 642                 return -EPROTONOSUPPORT;
 643
 644         if (qeth_get_elements_for_range(start, end) > 1) {
 645                 /* Misaligned HW header, move it to its own buffer element. */
 646                 hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
 647                 if (!hdr)
 648                         return -ENOMEM;
 649                 hd_len = sizeof(*hdr);
 650                 skb_copy_from_linear_data(skb, (char *)hdr, hd_len);
 651                 elements++;
 652         }
 653
 654         elements += qeth_count_elements(skb, hd_len);
 655         if (elements > QETH_MAX_BUFFER_ELEMENTS(card)) {
 656                 rc = -E2BIG;
 657                 goto out;
 658         }
 659
 660         rc = qeth_do_send_packet(card, queue, skb, hdr, hd_len, hd_len,
 661                                  elements);
 662 out:
 663         if (rc && hd_len)
 664                 kmem_cache_free(qeth_core_header_cache, hdr);
 665         return rc;
 666 }
 667
 668 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
 669                                            struct net_device *dev)
 670 {
 671         struct qeth_card *card = dev->ml_priv;
 672         int cast_type = qeth_l2_get_cast_type(card, skb);
 673         int ipv = qeth_get_ip_version(skb);
 674         struct qeth_qdio_out_q *queue;
 675         int tx_bytes = skb->len;
 676         int rc;
 677
 678         if (card->state != CARD_STATE_UP) {
 679                 card->stats.tx_carrier_errors++;
 680                 goto tx_drop;
 681         }
 682
 683         queue = qeth_get_tx_queue(card, skb, ipv, cast_type);
 684
 685         if (card->options.performance_stats) {
 686                 card->perf_stats.outbound_cnt++;
 687                 card->perf_stats.outbound_start_time = qeth_get_micros();
 688         }
 689         netif_stop_queue(dev);
 690
 691         if (IS_OSN(card))
 692                 rc = qeth_l2_xmit_osn(card, skb, queue);
 693         else
 694                 rc = qeth_xmit(card, skb, queue, ipv, cast_type,
 695                                qeth_l2_fill_header);
 696
 697         if (!rc) {
 698                 card->stats.tx_packets++;
 699                 card->stats.tx_bytes += tx_bytes;
 700                 if (card->options.performance_stats)
 701                         card->perf_stats.outbound_time += qeth_get_micros() -
 702                                 card->perf_stats.outbound_start_time;
 703                 netif_wake_queue(dev);
 704                 return NETDEV_TX_OK;
 705         } else if (rc == -EBUSY) {
 706                 return NETDEV_TX_BUSY;
 707         } /* else fall through */
 708
 709 tx_drop:
 710         card->stats.tx_dropped++;
 711         card->stats.tx_errors++;
 712         dev_kfree_skb_any(skb);
 713         netif_wake_queue(dev);
 714         return NETDEV_TX_OK;
 715 }
 716
 717 static int __qeth_l2_open(struct net_device *dev)
 718 {
 719         struct qeth_card *card = dev->ml_priv;
 720         int rc = 0;
 721
 722         QETH_CARD_TEXT(card, 4, "qethopen");
 723         if (card->state == CARD_STATE_UP)
 724                 return rc;
 725         if (card->state != CARD_STATE_SOFTSETUP)
 726                 return -ENODEV;
 727
 728         if ((card->info.type != QETH_CARD_TYPE_OSN) &&
 729              (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
 730                 QETH_CARD_TEXT(card, 4, "nomacadr");
 731                 return -EPERM;
 732         }
 733         card->data.state = CH_STATE_UP;
 734         card->state = CARD_STATE_UP;
 735         netif_start_queue(dev);
 736
 737         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
 738                 napi_enable(&card->napi);
 739                 local_bh_disable();
 740                 napi_schedule(&card->napi);
 741                 /* kick-start the NAPI softirq: */
 742                 local_bh_enable();
 743         } else
 744                 rc = -EIO;
 745         return rc;
 746 }
 747
 748 static int qeth_l2_open(struct net_device *dev)
 749 {
 750         struct qeth_card *card = dev->ml_priv;
 751
 752         QETH_CARD_TEXT(card, 5, "qethope_");
 753         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 754                 QETH_CARD_TEXT(card, 3, "openREC");
 755                 return -ERESTARTSYS;
 756         }
 757         return __qeth_l2_open(dev);
 758 }
 759
 760 static int qeth_l2_stop(struct net_device *dev)
 761 {
 762         struct qeth_card *card = dev->ml_priv;
 763
 764         QETH_CARD_TEXT(card, 4, "qethstop");
 765         netif_tx_disable(dev);
 766         if (card->state == CARD_STATE_UP) {
 767                 card->state = CARD_STATE_SOFTSETUP;
 768                 napi_disable(&card->napi);
 769         }
 770         return 0;
 771 }
 772
 773 static const struct device_type qeth_l2_devtype = {
 774         .name = "qeth_layer2",
 775         .groups = qeth_l2_attr_groups,
 776 };
 777
 778 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
 779 {
 780         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 781         int rc;
 782
 783         if (gdev->dev.type == &qeth_generic_devtype) {
 784                 rc = qeth_l2_create_device_attributes(&gdev->dev);
 785                 if (rc)
 786                         return rc;
 787         }
 788         INIT_LIST_HEAD(&card->vid_list);
 789         hash_init(card->mac_htable);
 790         card->info.hwtrap = 0;
 791         qeth_l2_vnicc_set_defaults(card);
 792         return 0;
 793 }
 794
 795 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
 796 {
 797         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
 798
 799         if (cgdev->dev.type == &qeth_generic_devtype)
 800                 qeth_l2_remove_device_attributes(&cgdev->dev);
 801         qeth_set_allowed_threads(card, 0, 1);
 802         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
 803
 804         if (cgdev->state == CCWGROUP_ONLINE)
 805                 qeth_l2_set_offline(cgdev);
 806
 807         cancel_work_sync(&card->close_dev_work);
 808         if (qeth_netdev_is_registered(card->dev))
 809                 unregister_netdev(card->dev);
 810 }
 811
 812 static const struct ethtool_ops qeth_l2_ethtool_ops = {
 813         .get_link = ethtool_op_get_link,
 814         .get_strings = qeth_core_get_strings,
 815         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 816         .get_sset_count = qeth_core_get_sset_count,
 817         .get_drvinfo = qeth_core_get_drvinfo,
 818         .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
 819 };
 820
 821 static const struct ethtool_ops qeth_l2_osn_ops = {
 822         .get_strings = qeth_core_get_strings,
 823         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 824         .get_sset_count = qeth_core_get_sset_count,
 825         .get_drvinfo = qeth_core_get_drvinfo,
 826 };
 827
 828 static const struct net_device_ops qeth_l2_netdev_ops = {
 829         .ndo_open               = qeth_l2_open,
 830         .ndo_stop               = qeth_l2_stop,
 831         .ndo_get_stats          = qeth_get_stats,
 832         .ndo_start_xmit         = qeth_l2_hard_start_xmit,
 833         .ndo_features_check     = qeth_features_check,
 834         .ndo_validate_addr      = eth_validate_addr,
 835         .ndo_set_rx_mode        = qeth_l2_set_rx_mode,
 836         .ndo_do_ioctl           = qeth_do_ioctl,
 837         .ndo_set_mac_address    = qeth_l2_set_mac_address,
 838         .ndo_vlan_rx_add_vid    = qeth_l2_vlan_rx_add_vid,
 839         .ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
 840         .ndo_tx_timeout         = qeth_tx_timeout,
 841         .ndo_fix_features       = qeth_fix_features,
 842         .ndo_set_features       = qeth_set_features
 843 };
 844
 845 static int qeth_l2_setup_netdev(struct qeth_card *card, bool carrier_ok)
 846 {
 847         int rc;
 848
 849         if (qeth_netdev_is_registered(card->dev))
 850                 return 0;
 851
 852         card->dev->priv_flags |= IFF_UNICAST_FLT;
 853         card->dev->netdev_ops = &qeth_l2_netdev_ops;
 854         if (card->info.type == QETH_CARD_TYPE_OSN) {
 855                 card->dev->ethtool_ops = &qeth_l2_osn_ops;
 856                 card->dev->flags |= IFF_NOARP;
 857         } else {
 858                 card->dev->ethtool_ops = &qeth_l2_ethtool_ops;
 859                 card->dev->needed_headroom = sizeof(struct qeth_hdr);
 860         }
 861
 862         if (card->info.type == QETH_CARD_TYPE_OSM)
 863                 card->dev->features |= NETIF_F_VLAN_CHALLENGED;
 864         else
 865                 card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
 866
 867         if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
 868                 card->dev->features |= NETIF_F_SG;
 869                 /* OSA 3S and earlier has no RX/TX support */
 870                 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
 871                         card->dev->hw_features |= NETIF_F_IP_CSUM;
 872                         card->dev->vlan_features |= NETIF_F_IP_CSUM;
 873                 }
 874         }
 875         if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) {
 876                 card->dev->hw_features |= NETIF_F_IPV6_CSUM;
 877                 card->dev->vlan_features |= NETIF_F_IPV6_CSUM;
 878         }
 879         if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) ||
 880             qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) {
 881                 card->dev->hw_features |= NETIF_F_RXCSUM;
 882                 card->dev->vlan_features |= NETIF_F_RXCSUM;
 883         }
 884         if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) {
 885                 card->dev->hw_features |= NETIF_F_TSO;
 886                 card->dev->vlan_features |= NETIF_F_TSO;
 887         }
 888         if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) {
 889                 card->dev->hw_features |= NETIF_F_TSO6;
 890                 card->dev->vlan_features |= NETIF_F_TSO6;
 891         }
 892
 893         if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) {
 894                 card->dev->needed_headroom = sizeof(struct qeth_hdr_tso);
 895                 netif_set_gso_max_size(card->dev,
 896                                        PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1));
 897         }
 898
 899         if (!is_valid_ether_addr(card->dev->dev_addr))
 900                 qeth_l2_request_initial_mac(card);
 901         netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
 902         rc = register_netdev(card->dev);
 903         if (!rc && carrier_ok)
 904                 netif_carrier_on(card->dev);
 905
 906         if (rc)
 907                 card->dev->netdev_ops = NULL;
 908         return rc;
 909 }
 910
 911 static int qeth_l2_start_ipassists(struct qeth_card *card)
 912 {
 913         /* configure isolation level */
 914         if (qeth_set_access_ctrl_online(card, 0))
 915                 return -ENODEV;
 916         return 0;
 917 }
 918
 919 static void qeth_l2_trace_features(struct qeth_card *card)
 920 {
 921         /* Set BridgePort features */
 922         QETH_CARD_TEXT(card, 2, "featuSBP");
 923         QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
 924                       sizeof(card->options.sbp.supported_funcs));
 925         /* VNIC Characteristics features */
 926         QETH_CARD_TEXT(card, 2, "feaVNICC");
 927         QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars,
 928                       sizeof(card->options.vnicc.sup_chars));
 929 }
 930
 931 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 932 {
 933         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 934         int rc = 0;
 935         enum qeth_card_states recover_flag;
 936         bool carrier_ok;
 937
 938         mutex_lock(&card->discipline_mutex);
 939         mutex_lock(&card->conf_mutex);
 940         QETH_DBF_TEXT(SETUP, 2, "setonlin");
 941         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 942
 943         recover_flag = card->state;
 944         rc = qeth_core_hardsetup_card(card, &carrier_ok);
 945         if (rc) {
 946                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
 947                 rc = -ENODEV;
 948                 goto out_remove;
 949         }
 950         qeth_bridgeport_query_support(card);
 951         if (card->options.sbp.supported_funcs)
 952                 dev_info(&card->gdev->dev,
 953                 "The device represents a Bridge Capable Port\n");
 954
 955         rc = qeth_l2_setup_netdev(card, carrier_ok);
 956         if (rc)
 957                 goto out_remove;
 958
 959         if (card->info.type != QETH_CARD_TYPE_OSN &&
 960             !qeth_l2_send_setmac(card, card->dev->dev_addr))
 961                 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 962
 963         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
 964                 if (card->info.hwtrap &&
 965                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
 966                         card->info.hwtrap = 0;
 967         } else
 968                 card->info.hwtrap = 0;
 969
 970         /* for the rx_bcast characteristic, init VNICC after setmac */
 971         qeth_l2_vnicc_init(card);
 972
 973         qeth_trace_features(card);
 974         qeth_l2_trace_features(card);
 975
 976         qeth_l2_setup_bridgeport_attrs(card);
 977
 978         card->state = CARD_STATE_HARDSETUP;
 979         qeth_print_status_message(card);
 980
 981         /* softsetup */
 982         QETH_DBF_TEXT(SETUP, 2, "softsetp");
 983
 984         if ((card->info.type == QETH_CARD_TYPE_OSD) ||
 985             (card->info.type == QETH_CARD_TYPE_OSX)) {
 986                 rc = qeth_l2_start_ipassists(card);
 987                 if (rc)
 988                         goto out_remove;
 989         }
 990
 991         if (card->info.type != QETH_CARD_TYPE_OSN)
 992                 qeth_l2_process_vlans(card);
 993
 994         netif_tx_disable(card->dev);
 995
 996         rc = qeth_init_qdio_queues(card);
 997         if (rc) {
 998                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
 999                 rc = -ENODEV;
1000                 goto out_remove;
1001         }
1002         card->state = CARD_STATE_SOFTSETUP;
1003
1004         qeth_set_allowed_threads(card, 0xffffffff, 0);
1005
1006         qeth_enable_hw_features(card->dev);
1007         if (recover_flag == CARD_STATE_RECOVER) {
1008                 if (recovery_mode &&
1009                     card->info.type != QETH_CARD_TYPE_OSN) {
1010                         __qeth_l2_open(card->dev);
1011                         qeth_l2_set_rx_mode(card->dev);
1012                 } else {
1013                         rtnl_lock();
1014                         dev_open(card->dev, NULL);
1015                         rtnl_unlock();
1016                 }
1017         }
1018         /* let user_space know that device is online */
1019         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1020         mutex_unlock(&card->conf_mutex);
1021         mutex_unlock(&card->discipline_mutex);
1022         return 0;
1023
1024 out_remove:
1025         qeth_l2_stop_card(card, 0);
1026         ccw_device_set_offline(CARD_DDEV(card));
1027         ccw_device_set_offline(CARD_WDEV(card));
1028         ccw_device_set_offline(CARD_RDEV(card));
1029         qdio_free(CARD_DDEV(card));
1030         if (recover_flag == CARD_STATE_RECOVER)
1031                 card->state = CARD_STATE_RECOVER;
1032         else
1033                 card->state = CARD_STATE_DOWN;
1034         mutex_unlock(&card->conf_mutex);
1035         mutex_unlock(&card->discipline_mutex);
1036         return rc;
1037 }
1038
1039 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1040 {
1041         return __qeth_l2_set_online(gdev, 0);
1042 }
1043
1044 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1045                                         int recovery_mode)
1046 {
1047         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1048         int rc = 0, rc2 = 0, rc3 = 0;
1049         enum qeth_card_states recover_flag;
1050
1051         mutex_lock(&card->discipline_mutex);
1052         mutex_lock(&card->conf_mutex);
1053         QETH_DBF_TEXT(SETUP, 3, "setoffl");
1054         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1055
1056         netif_carrier_off(card->dev);
1057         recover_flag = card->state;
1058         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1059                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1060                 card->info.hwtrap = 1;
1061         }
1062         qeth_l2_stop_card(card, recovery_mode);
1063         rc  = ccw_device_set_offline(CARD_DDEV(card));
1064         rc2 = ccw_device_set_offline(CARD_WDEV(card));
1065         rc3 = ccw_device_set_offline(CARD_RDEV(card));
1066         if (!rc)
1067                 rc = (rc2) ? rc2 : rc3;
1068         if (rc)
1069                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1070         qdio_free(CARD_DDEV(card));
1071         if (recover_flag == CARD_STATE_UP)
1072                 card->state = CARD_STATE_RECOVER;
1073         /* let user_space know that device is offline */
1074         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1075         mutex_unlock(&card->conf_mutex);
1076         mutex_unlock(&card->discipline_mutex);
1077         return 0;
1078 }
1079
1080 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1081 {
1082         return __qeth_l2_set_offline(cgdev, 0);
1083 }
1084
1085 static int qeth_l2_recover(void *ptr)
1086 {
1087         struct qeth_card *card;
1088         int rc = 0;
1089
1090         card = (struct qeth_card *) ptr;
1091         QETH_CARD_TEXT(card, 2, "recover1");
1092         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1093                 return 0;
1094         QETH_CARD_TEXT(card, 2, "recover2");
1095         dev_warn(&card->gdev->dev,
1096                 "A recovery process has been started for the device\n");
1097         qeth_set_recovery_task(card);
1098         __qeth_l2_set_offline(card->gdev, 1);
1099         rc = __qeth_l2_set_online(card->gdev, 1);
1100         if (!rc)
1101                 dev_info(&card->gdev->dev,
1102                         "Device successfully recovered!\n");
1103         else {
1104                 qeth_close_dev(card);
1105                 dev_warn(&card->gdev->dev, "The qeth device driver "
1106                                 "failed to recover an error on the device\n");
1107         }
1108         qeth_clear_recovery_task(card);
1109         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1110         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1111         return 0;
1112 }
1113
1114 static int __init qeth_l2_init(void)
1115 {
1116         pr_info("register layer 2 discipline\n");
1117         return 0;
1118 }
1119
1120 static void __exit qeth_l2_exit(void)
1121 {
1122         pr_info("unregister layer 2 discipline\n");
1123 }
1124
1125 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1126 {
1127         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1128
1129         netif_device_detach(card->dev);
1130         qeth_set_allowed_threads(card, 0, 1);
1131         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1132         if (gdev->state == CCWGROUP_OFFLINE)
1133                 return 0;
1134         if (card->state == CARD_STATE_UP) {
1135                 if (card->info.hwtrap)
1136                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1137                 __qeth_l2_set_offline(card->gdev, 1);
1138         } else
1139                 __qeth_l2_set_offline(card->gdev, 0);
1140         return 0;
1141 }
1142
1143 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1144 {
1145         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1146         int rc = 0;
1147
1148         if (card->state == CARD_STATE_RECOVER) {
1149                 rc = __qeth_l2_set_online(card->gdev, 1);
1150                 if (rc) {
1151                         rtnl_lock();
1152                         dev_close(card->dev);
1153                         rtnl_unlock();
1154                 }
1155         } else
1156                 rc = __qeth_l2_set_online(card->gdev, 0);
1157
1158         qeth_set_allowed_threads(card, 0xffffffff, 0);
1159         netif_device_attach(card->dev);
1160         if (rc)
1161                 dev_warn(&card->gdev->dev, "The qeth device driver "
1162                         "failed to recover an error on the device\n");
1163         return rc;
1164 }
1165
1166 /* Returns zero if the command is successfully "consumed" */
1167 static int qeth_l2_control_event(struct qeth_card *card,
1168                                         struct qeth_ipa_cmd *cmd)
1169 {
1170         switch (cmd->hdr.command) {
1171         case IPA_CMD_SETBRIDGEPORT_OSA:
1172         case IPA_CMD_SETBRIDGEPORT_IQD:
1173                 if (cmd->data.sbp.hdr.command_code ==
1174                                 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1175                         qeth_bridge_state_change(card, cmd);
1176                         return 0;
1177                 } else
1178                         return 1;
1179         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1180                 qeth_bridge_host_event(card, cmd);
1181                 return 0;
1182         default:
1183                 return 1;
1184         }
1185 }
1186
1187 struct qeth_discipline qeth_l2_discipline = {
1188         .devtype = &qeth_l2_devtype,
1189         .process_rx_buffer = qeth_l2_process_inbound_buffer,
1190         .recover = qeth_l2_recover,
1191         .setup = qeth_l2_probe_device,
1192         .remove = qeth_l2_remove_device,
1193         .set_online = qeth_l2_set_online,
1194         .set_offline = qeth_l2_set_offline,
1195         .freeze = qeth_l2_pm_suspend,
1196         .thaw = qeth_l2_pm_resume,
1197         .restore = qeth_l2_pm_resume,
1198         .do_ioctl = NULL,
1199         .control_event_handler = qeth_l2_control_event,
1200 };
1201 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1202
1203 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1204                            struct qeth_cmd_buffer *iob)
1205 {
1206         struct qeth_channel *channel = iob->channel;
1207         int rc = 0;
1208
1209         QETH_CARD_TEXT(card, 5, "osndctrd");
1210
1211         wait_event(card->wait_q,
1212                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1213         qeth_prepare_control_data(card, len, iob);
1214         QETH_CARD_TEXT(card, 6, "osnoirqp");
1215         spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
1216         rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw,
1217                                       (addr_t) iob, 0, 0, QETH_IPA_TIMEOUT);
1218         spin_unlock_irq(get_ccwdev_lock(channel->ccwdev));
1219         if (rc) {
1220                 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1221                            "ccw_device_start rc = %i\n", rc);
1222                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1223                 qeth_release_buffer(channel, iob);
1224                 atomic_set(&channel->irq_pending, 0);
1225                 wake_up(&card->wait_q);
1226         }
1227         return rc;
1228 }
1229
1230 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1231                         struct qeth_cmd_buffer *iob, int data_len)
1232 {
1233         u16 s1, s2;
1234
1235         QETH_CARD_TEXT(card, 4, "osndipa");
1236
1237         qeth_prepare_ipa_cmd(card, iob);
1238         s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1239         s2 = (u16)data_len;
1240         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1241         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1242         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1243         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1244         return qeth_osn_send_control_data(card, s1, iob);
1245 }
1246
1247 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1248 {
1249         struct qeth_cmd_buffer *iob;
1250         struct qeth_card *card;
1251
1252         if (!dev)
1253                 return -ENODEV;
1254         card = dev->ml_priv;
1255         if (!card)
1256                 return -ENODEV;
1257         QETH_CARD_TEXT(card, 2, "osnsdmc");
1258         if (!qeth_card_hw_is_reachable(card))
1259                 return -ENODEV;
1260         iob = qeth_wait_for_buffer(&card->write);
1261         memcpy(__ipa_cmd(iob), data, data_len);
1262         return qeth_osn_send_ipa_cmd(card, iob, data_len);
1263 }
1264 EXPORT_SYMBOL(qeth_osn_assist);
1265
1266 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1267                   int (*assist_cb)(struct net_device *, void *),
1268                   int (*data_cb)(struct sk_buff *))
1269 {
1270         struct qeth_card *card;
1271         char bus_id[16];
1272         u16 devno;
1273
1274         memcpy(&devno, read_dev_no, 2);
1275         sprintf(bus_id, "0.0.%04x", devno);
1276         card = qeth_get_card_by_busid(bus_id);
1277         if (!card || !IS_OSN(card))
1278                 return -ENODEV;
1279         *dev = card->dev;
1280
1281         QETH_CARD_TEXT(card, 2, "osnreg");
1282         if ((assist_cb == NULL) || (data_cb == NULL))
1283                 return -EINVAL;
1284         card->osn_info.assist_cb = assist_cb;
1285         card->osn_info.data_cb = data_cb;
1286         return 0;
1287 }
1288 EXPORT_SYMBOL(qeth_osn_register);
1289
1290 void qeth_osn_deregister(struct net_device *dev)
1291 {
1292         struct qeth_card *card;
1293
1294         if (!dev)
1295                 return;
1296         card = dev->ml_priv;
1297         if (!card)
1298                 return;
1299         QETH_CARD_TEXT(card, 2, "osndereg");
1300         card->osn_info.assist_cb = NULL;
1301         card->osn_info.data_cb = NULL;
1302         return;
1303 }
1304 EXPORT_SYMBOL(qeth_osn_deregister);
1305
1306 /* SETBRIDGEPORT support, async notifications */
1307
1308 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1309
1310 /**
1311  * qeth_bridge_emit_host_event() - bridgeport address change notification
1312  * @card:  qeth_card structure pointer, for udev events.
1313  * @evtype:  "normal" register/unregister, or abort, or reset. For abort
1314  *            and reset token and addr_lnid are unused and may be NULL.
1315  * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
1316  *                        object, 0 - addition of an object.
1317  *                        0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1318  * @token: "network token" structure identifying physical address of the port.
1319  * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1320  *
1321  * This function is called when registrations and deregistrations are
1322  * reported by the hardware, and also when notifications are enabled -
1323  * for all currently registered addresses.
1324  */
1325 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1326         enum qeth_an_event_type evtype,
1327         u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1328 {
1329         char str[7][32];
1330         char *env[8];
1331         int i = 0;
1332
1333         switch (evtype) {
1334         case anev_reg_unreg:
1335                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1336                                 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1337                                 ? "deregister" : "register");
1338                 env[i] = str[i]; i++;
1339                 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1340                         snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1341                                 addr_lnid->lnid);
1342                         env[i] = str[i]; i++;
1343                 }
1344                 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1345                         snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1346                                 addr_lnid->mac);
1347                         env[i] = str[i]; i++;
1348                 }
1349                 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1350                         token->cssid, token->ssid, token->devnum);
1351                 env[i] = str[i]; i++;
1352                 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1353                 env[i] = str[i]; i++;
1354                 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1355                                 token->chpid);
1356                 env[i] = str[i]; i++;
1357                 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1358                 env[i] = str[i]; i++;
1359                 break;
1360         case anev_abort:
1361                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1362                 env[i] = str[i]; i++;
1363                 break;
1364         case anev_reset:
1365                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1366                 env[i] = str[i]; i++;
1367                 break;
1368         }
1369         env[i] = NULL;
1370         kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1371 }
1372
1373 struct qeth_bridge_state_data {
1374         struct work_struct worker;
1375         struct qeth_card *card;
1376         struct qeth_sbp_state_change qports;
1377 };
1378
1379 static void qeth_bridge_state_change_worker(struct work_struct *work)
1380 {
1381         struct qeth_bridge_state_data *data =
1382                 container_of(work, struct qeth_bridge_state_data, worker);
1383         /* We are only interested in the first entry - local port */
1384         struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1385         char env_locrem[32];
1386         char env_role[32];
1387         char env_state[32];
1388         char *env[] = {
1389                 env_locrem,
1390                 env_role,
1391                 env_state,
1392                 NULL
1393         };
1394
1395         /* Role should not change by itself, but if it did, */
1396         /* information from the hardware is authoritative.  */
1397         mutex_lock(&data->card->conf_mutex);
1398         data->card->options.sbp.role = entry->role;
1399         mutex_unlock(&data->card->conf_mutex);
1400
1401         snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1402         snprintf(env_role, sizeof(env_role), "ROLE=%s",
1403                 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1404                 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1405                 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1406                 "<INVALID>");
1407         snprintf(env_state, sizeof(env_state), "STATE=%s",
1408                 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1409                 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1410                 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1411                 "<INVALID>");
1412         kobject_uevent_env(&data->card->gdev->dev.kobj,
1413                                 KOBJ_CHANGE, env);
1414         kfree(data);
1415 }
1416
1417 static void qeth_bridge_state_change(struct qeth_card *card,
1418                                         struct qeth_ipa_cmd *cmd)
1419 {
1420         struct qeth_sbp_state_change *qports =
1421                  &cmd->data.sbp.data.state_change;
1422         struct qeth_bridge_state_data *data;
1423         int extrasize;
1424
1425         QETH_CARD_TEXT(card, 2, "brstchng");
1426         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1427                 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1428                 return;
1429         }
1430         extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1431         data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1432                 GFP_ATOMIC);
1433         if (!data) {
1434                 QETH_CARD_TEXT(card, 2, "BPSalloc");
1435                 return;
1436         }
1437         INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1438         data->card = card;
1439         memcpy(&data->qports, qports,
1440                         sizeof(struct qeth_sbp_state_change) + extrasize);
1441         queue_work(card->event_wq, &data->worker);
1442 }
1443
1444 struct qeth_bridge_host_data {
1445         struct work_struct worker;
1446         struct qeth_card *card;
1447         struct qeth_ipacmd_addr_change hostevs;
1448 };
1449
1450 static void qeth_bridge_host_event_worker(struct work_struct *work)
1451 {
1452         struct qeth_bridge_host_data *data =
1453                 container_of(work, struct qeth_bridge_host_data, worker);
1454         int i;
1455
1456         if (data->hostevs.lost_event_mask) {
1457                 dev_info(&data->card->gdev->dev,
1458 "Address notification from the Bridge Port stopped %s (%s)\n",
1459                         data->card->dev->name,
1460                         (data->hostevs.lost_event_mask == 0x01)
1461                         ? "Overflow"
1462                         : (data->hostevs.lost_event_mask == 0x02)
1463                         ? "Bridge port state change"
1464                         : "Unknown reason");
1465                 mutex_lock(&data->card->conf_mutex);
1466                 data->card->options.sbp.hostnotification = 0;
1467                 mutex_unlock(&data->card->conf_mutex);
1468                 qeth_bridge_emit_host_event(data->card, anev_abort,
1469                         0, NULL, NULL);
1470         } else
1471                 for (i = 0; i < data->hostevs.num_entries; i++) {
1472                         struct qeth_ipacmd_addr_change_entry *entry =
1473                                         &data->hostevs.entry[i];
1474                         qeth_bridge_emit_host_event(data->card,
1475                                         anev_reg_unreg,
1476                                         entry->change_code,
1477                                         &entry->token, &entry->addr_lnid);
1478                 }
1479         kfree(data);
1480 }
1481
1482 static void qeth_bridge_host_event(struct qeth_card *card,
1483                                         struct qeth_ipa_cmd *cmd)
1484 {
1485         struct qeth_ipacmd_addr_change *hostevs =
1486                  &cmd->data.addrchange;
1487         struct qeth_bridge_host_data *data;
1488         int extrasize;
1489
1490         QETH_CARD_TEXT(card, 2, "brhostev");
1491         if (cmd->hdr.return_code != 0x0000) {
1492                 if (cmd->hdr.return_code == 0x0010) {
1493                         if (hostevs->lost_event_mask == 0x00)
1494                                 hostevs->lost_event_mask = 0xff;
1495                 } else {
1496                         QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1497                                 cmd->hdr.return_code);
1498                         return;
1499                 }
1500         }
1501         extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1502                                                 hostevs->num_entries;
1503         data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1504                 GFP_ATOMIC);
1505         if (!data) {
1506                 QETH_CARD_TEXT(card, 2, "BPHalloc");
1507                 return;
1508         }
1509         INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1510         data->card = card;
1511         memcpy(&data->hostevs, hostevs,
1512                         sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1513         queue_work(card->event_wq, &data->worker);
1514 }
1515
1516 /* SETBRIDGEPORT support; sending commands */
1517
1518 struct _qeth_sbp_cbctl {
1519         u16 ipa_rc;
1520         u16 cmd_rc;
1521         union {
1522                 u32 supported;
1523                 struct {
1524                         enum qeth_sbp_roles *role;
1525                         enum qeth_sbp_states *state;
1526                 } qports;
1527         } data;
1528 };
1529
1530 /**
1531  * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1532  * @card:                     qeth_card structure pointer, for debug messages.
1533  * @cbctl:                    state structure with hardware return codes.
1534  * @setcmd:                   IPA command code
1535  *
1536  * Returns negative errno-compatible error indication or 0 on success.
1537  */
1538 static int qeth_bridgeport_makerc(struct qeth_card *card,
1539         struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1540 {
1541         int rc;
1542         int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1543
1544         if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1545             (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1546                 switch (cbctl->cmd_rc) {
1547                 case IPA_RC_SUCCESS:
1548                         rc = 0;
1549                         break;
1550                 case IPA_RC_L2_UNSUPPORTED_CMD:
1551                 case IPA_RC_UNSUPPORTED_COMMAND:
1552                         rc = -EOPNOTSUPP;
1553                         break;
1554                 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1555                 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
1556                         rc = -ENODEV; /* maybe not the best code here? */
1557                         dev_err(&card->gdev->dev,
1558         "The device is not configured as a Bridge Port\n");
1559                         break;
1560                 case IPA_RC_SBP_OSA_OS_MISMATCH:
1561                 case IPA_RC_SBP_IQD_OS_MISMATCH:
1562                         rc = -EPERM;
1563                         dev_err(&card->gdev->dev,
1564         "A Bridge Port is already configured by a different operating system\n");
1565                         break;
1566                 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1567                 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
1568                         switch (setcmd) {
1569                         case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1570                                 rc = -EEXIST;
1571                                 dev_err(&card->gdev->dev,
1572         "The LAN already has a primary Bridge Port\n");
1573                                 break;
1574                         case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1575                                 rc = -EBUSY;
1576                                 dev_err(&card->gdev->dev,
1577         "The device is already a primary Bridge Port\n");
1578                                 break;
1579                         default:
1580                                 rc = -EIO;
1581                         }
1582                         break;
1583                 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1584                 case IPA_RC_SBP_IQD_CURRENT_SECOND:
1585                         rc = -EBUSY;
1586                         dev_err(&card->gdev->dev,
1587         "The device is already a secondary Bridge Port\n");
1588                         break;
1589                 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1590                 case IPA_RC_SBP_IQD_LIMIT_SECOND:
1591                         rc = -EEXIST;
1592                         dev_err(&card->gdev->dev,
1593         "The LAN cannot have more secondary Bridge Ports\n");
1594                         break;
1595                 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1596                 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
1597                         rc = -EBUSY;
1598                         dev_err(&card->gdev->dev,
1599         "The device is already a primary Bridge Port\n");
1600                         break;
1601                 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1602                 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
1603                         rc = -EACCES;
1604                         dev_err(&card->gdev->dev,
1605         "The device is not authorized to be a Bridge Port\n");
1606                         break;
1607                 default:
1608                         rc = -EIO;
1609                 }
1610         else
1611                 switch (cbctl->ipa_rc) {
1612                 case IPA_RC_NOTSUPP:
1613                         rc = -EOPNOTSUPP;
1614                         break;
1615                 case IPA_RC_UNSUPPORTED_COMMAND:
1616                         rc = -EOPNOTSUPP;
1617                         break;
1618                 default:
1619                         rc = -EIO;
1620                 }
1621
1622         if (rc) {
1623                 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1624                 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1625         }
1626         return rc;
1627 }
1628
1629 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1630                                                   enum qeth_ipa_sbp_cmd sbp_cmd,
1631                                                   unsigned int cmd_length)
1632 {
1633         enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ?
1634                                         IPA_CMD_SETBRIDGEPORT_IQD :
1635                                         IPA_CMD_SETBRIDGEPORT_OSA;
1636         struct qeth_cmd_buffer *iob;
1637         struct qeth_ipa_cmd *cmd;
1638
1639         iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0);
1640         if (!iob)
1641                 return iob;
1642         cmd = __ipa_cmd(iob);
1643         cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1644                                       cmd_length;
1645         cmd->data.sbp.hdr.command_code = sbp_cmd;
1646         cmd->data.sbp.hdr.used_total = 1;
1647         cmd->data.sbp.hdr.seq_no = 1;
1648         return iob;
1649 }
1650
1651 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1652         struct qeth_reply *reply, unsigned long data)
1653 {
1654         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1655         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1656         QETH_CARD_TEXT(card, 2, "brqsupcb");
1657         cbctl->ipa_rc = cmd->hdr.return_code;
1658         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1659         if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1660                 cbctl->data.supported =
1661                         cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1662         } else {
1663                 cbctl->data.supported = 0;
1664         }
1665         return 0;
1666 }
1667
1668 /**
1669  * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1670  * @card:                            qeth_card structure pointer.
1671  *
1672  * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1673  * strucutre: card->options.sbp.supported_funcs.
1674  */
1675 static void qeth_bridgeport_query_support(struct qeth_card *card)
1676 {
1677         struct qeth_cmd_buffer *iob;
1678         struct _qeth_sbp_cbctl cbctl;
1679
1680         QETH_CARD_TEXT(card, 2, "brqsuppo");
1681         iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1682                                  sizeof(struct qeth_sbp_query_cmds_supp));
1683         if (!iob)
1684                 return;
1685         if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1686                                                         (void *)&cbctl) ||
1687             qeth_bridgeport_makerc(card, &cbctl,
1688                                         IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1689                 /* non-zero makerc signifies failure, and produce messages */
1690                 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1691                 return;
1692         }
1693         card->options.sbp.supported_funcs = cbctl.data.supported;
1694 }
1695
1696 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1697         struct qeth_reply *reply, unsigned long data)
1698 {
1699         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1700         struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1701         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1702
1703         QETH_CARD_TEXT(card, 2, "brqprtcb");
1704         cbctl->ipa_rc = cmd->hdr.return_code;
1705         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1706         if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1707                 return 0;
1708         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1709                 cbctl->cmd_rc = 0xffff;
1710                 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1711                 return 0;
1712         }
1713         /* first entry contains the state of the local port */
1714         if (qports->num_entries > 0) {
1715                 if (cbctl->data.qports.role)
1716                         *cbctl->data.qports.role = qports->entry[0].role;
1717                 if (cbctl->data.qports.state)
1718                         *cbctl->data.qports.state = qports->entry[0].state;
1719         }
1720         return 0;
1721 }
1722
1723 /**
1724  * qeth_bridgeport_query_ports() - query local bridgeport status.
1725  * @card:                          qeth_card structure pointer.
1726  * @role:   Role of the port: 0-none, 1-primary, 2-secondary.
1727  * @state:  State of the port: 0-inactive, 1-standby, 2-active.
1728  *
1729  * Returns negative errno-compatible error indication or 0 on success.
1730  *
1731  * 'role' and 'state' are not updated in case of hardware operation failure.
1732  */
1733 int qeth_bridgeport_query_ports(struct qeth_card *card,
1734         enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1735 {
1736         int rc = 0;
1737         struct qeth_cmd_buffer *iob;
1738         struct _qeth_sbp_cbctl cbctl = {
1739                 .data = {
1740                         .qports = {
1741                                 .role = role,
1742                                 .state = state,
1743                         },
1744                 },
1745         };
1746
1747         QETH_CARD_TEXT(card, 2, "brqports");
1748         if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1749                 return -EOPNOTSUPP;
1750         iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1751         if (!iob)
1752                 return -ENOMEM;
1753         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1754                                 (void *)&cbctl);
1755         if (rc < 0)
1756                 return rc;
1757         return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1758 }
1759
1760 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1761         struct qeth_reply *reply, unsigned long data)
1762 {
1763         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1764         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1765         QETH_CARD_TEXT(card, 2, "brsetrcb");
1766         cbctl->ipa_rc = cmd->hdr.return_code;
1767         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1768         return 0;
1769 }
1770
1771 /**
1772  * qeth_bridgeport_setrole() - Assign primary role to the port.
1773  * @card:                      qeth_card structure pointer.
1774  * @role:                      Role to assign.
1775  *
1776  * Returns negative errno-compatible error indication or 0 on success.
1777  */
1778 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1779 {
1780         int rc = 0;
1781         int cmdlength;
1782         struct qeth_cmd_buffer *iob;
1783         struct _qeth_sbp_cbctl cbctl;
1784         enum qeth_ipa_sbp_cmd setcmd;
1785
1786         QETH_CARD_TEXT(card, 2, "brsetrol");
1787         switch (role) {
1788         case QETH_SBP_ROLE_NONE:
1789                 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1790                 cmdlength = sizeof(struct qeth_sbp_reset_role);
1791                 break;
1792         case QETH_SBP_ROLE_PRIMARY:
1793                 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1794                 cmdlength = sizeof(struct qeth_sbp_set_primary);
1795                 break;
1796         case QETH_SBP_ROLE_SECONDARY:
1797                 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1798                 cmdlength = sizeof(struct qeth_sbp_set_secondary);
1799                 break;
1800         default:
1801                 return -EINVAL;
1802         }
1803         if (!(card->options.sbp.supported_funcs & setcmd))
1804                 return -EOPNOTSUPP;
1805         iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1806         if (!iob)
1807                 return -ENOMEM;
1808         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1809                                 (void *)&cbctl);
1810         if (rc < 0)
1811                 return rc;
1812         return qeth_bridgeport_makerc(card, &cbctl, setcmd);
1813 }
1814
1815 /**
1816  * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1817  * @card:                     qeth_card structure pointer, for debug messages.
1818  *
1819  * Returns negative errno-compatible error indication or 0 on success.
1820  */
1821 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1822 {
1823         int rc;
1824
1825         if (pnso_rc == 0)
1826                 switch (response) {
1827                 case 0x0001:
1828                         rc = 0;
1829                         break;
1830                 case 0x0004:
1831                 case 0x0100:
1832                 case 0x0106:
1833                         rc = -EOPNOTSUPP;
1834                         dev_err(&card->gdev->dev,
1835                                 "Setting address notification failed\n");
1836                         break;
1837                 case 0x0107:
1838                         rc = -EAGAIN;
1839                         break;
1840                 default:
1841                         rc = -EIO;
1842                 }
1843         else
1844                 rc = -EIO;
1845
1846         if (rc) {
1847                 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1848                 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1849         }
1850         return rc;
1851 }
1852
1853 static void qeth_bridgeport_an_set_cb(void *priv,
1854                 enum qdio_brinfo_entry_type type, void *entry)
1855 {
1856         struct qeth_card *card = (struct qeth_card *)priv;
1857         struct qdio_brinfo_entry_l2 *l2entry;
1858         u8 code;
1859
1860         if (type != l2_addr_lnid) {
1861                 WARN_ON_ONCE(1);
1862                 return;
1863         }
1864
1865         l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1866         code = IPA_ADDR_CHANGE_CODE_MACADDR;
1867         if (l2entry->addr_lnid.lnid)
1868                 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1869         qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1870                 (struct net_if_token *)&l2entry->nit,
1871                 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1872 }
1873
1874 /**
1875  * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1876  * @card:                     qeth_card structure pointer.
1877  * @enable:                   0 - disable, non-zero - enable notifications
1878  *
1879  * Returns negative errno-compatible error indication or 0 on success.
1880  *
1881  * On enable, emits a series of address notifications udev events for all
1882  * currently registered hosts.
1883  */
1884 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
1885 {
1886         int rc;
1887         u16 response;
1888         struct ccw_device *ddev;
1889         struct subchannel_id schid;
1890
1891         if (!card)
1892                 return -EINVAL;
1893         if (!card->options.sbp.supported_funcs)
1894                 return -EOPNOTSUPP;
1895         ddev = CARD_DDEV(card);
1896         ccw_device_get_schid(ddev, &schid);
1897
1898         if (enable) {
1899                 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
1900                 rc = qdio_pnso_brinfo(schid, 1, &response,
1901                         qeth_bridgeport_an_set_cb, card);
1902         } else
1903                 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
1904         return qeth_anset_makerc(card, rc, response);
1905 }
1906
1907 static bool qeth_bridgeport_is_in_use(struct qeth_card *card)
1908 {
1909         return (card->options.sbp.role || card->options.sbp.reflect_promisc ||
1910                 card->options.sbp.hostnotification);
1911 }
1912
1913 /* VNIC Characteristics support */
1914
1915 /* handle VNICC IPA command return codes; convert to error codes */
1916 static int qeth_l2_vnicc_makerc(struct qeth_card *card, int ipa_rc)
1917 {
1918         int rc;
1919
1920         switch (ipa_rc) {
1921         case IPA_RC_SUCCESS:
1922                 return ipa_rc;
1923         case IPA_RC_L2_UNSUPPORTED_CMD:
1924         case IPA_RC_NOTSUPP:
1925                 rc = -EOPNOTSUPP;
1926                 break;
1927         case IPA_RC_VNICC_OOSEQ:
1928                 rc = -EALREADY;
1929                 break;
1930         case IPA_RC_VNICC_VNICBP:
1931                 rc = -EBUSY;
1932                 break;
1933         case IPA_RC_L2_ADDR_TABLE_FULL:
1934                 rc = -ENOSPC;
1935                 break;
1936         case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
1937                 rc = -EACCES;
1938                 break;
1939         default:
1940                 rc = -EIO;
1941         }
1942
1943         QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc);
1944         return rc;
1945 }
1946
1947 /* generic VNICC request call back control */
1948 struct _qeth_l2_vnicc_request_cbctl {
1949         u32 sub_cmd;
1950         struct {
1951                 u32 vnic_char;
1952                 u32 timeout;
1953         } param;
1954         struct {
1955                 union{
1956                         u32 *sup_cmds;
1957                         u32 *timeout;
1958                 };
1959         } result;
1960 };
1961
1962 /* generic VNICC request call back */
1963 static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
1964                                     struct qeth_reply *reply,
1965                                     unsigned long data)
1966 {
1967         struct _qeth_l2_vnicc_request_cbctl *cbctl =
1968                 (struct _qeth_l2_vnicc_request_cbctl *) reply->param;
1969         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1970         struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
1971
1972         QETH_CARD_TEXT(card, 2, "vniccrcb");
1973         if (cmd->hdr.return_code)
1974                 return 0;
1975         /* return results to caller */
1976         card->options.vnicc.sup_chars = rep->hdr.sup;
1977         card->options.vnicc.cur_chars = rep->hdr.cur;
1978
1979         if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS)
1980                 *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds;
1981
1982         if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT)
1983                 *cbctl->result.timeout = rep->getset_timeout.timeout;
1984
1985         return 0;
1986 }
1987
1988 /* generic VNICC request */
1989 static int qeth_l2_vnicc_request(struct qeth_card *card,
1990                                  struct _qeth_l2_vnicc_request_cbctl *cbctl)
1991 {
1992         struct qeth_ipacmd_vnicc *req;
1993         struct qeth_cmd_buffer *iob;
1994         struct qeth_ipa_cmd *cmd;
1995         int rc;
1996
1997         QETH_CARD_TEXT(card, 2, "vniccreq");
1998
1999         /* get new buffer for request */
2000         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0);
2001         if (!iob)
2002                 return -ENOMEM;
2003
2004         /* create header for request */
2005         cmd = __ipa_cmd(iob);
2006         req = &cmd->data.vnicc;
2007
2008         /* create sub command header for request */
2009         req->sub_hdr.data_length = sizeof(req->sub_hdr);
2010         req->sub_hdr.sub_command = cbctl->sub_cmd;
2011
2012         /* create sub command specific request fields */
2013         switch (cbctl->sub_cmd) {
2014         case IPA_VNICC_QUERY_CHARS:
2015                 break;
2016         case IPA_VNICC_QUERY_CMDS:
2017                 req->sub_hdr.data_length += sizeof(req->query_cmds);
2018                 req->query_cmds.vnic_char = cbctl->param.vnic_char;
2019                 break;
2020         case IPA_VNICC_ENABLE:
2021         case IPA_VNICC_DISABLE:
2022                 req->sub_hdr.data_length += sizeof(req->set_char);
2023                 req->set_char.vnic_char = cbctl->param.vnic_char;
2024                 break;
2025         case IPA_VNICC_SET_TIMEOUT:
2026                 req->getset_timeout.timeout = cbctl->param.timeout;
2027                 /* fallthrough */
2028         case IPA_VNICC_GET_TIMEOUT:
2029                 req->sub_hdr.data_length += sizeof(req->getset_timeout);
2030                 req->getset_timeout.vnic_char = cbctl->param.vnic_char;
2031                 break;
2032         default:
2033                 qeth_release_buffer(iob->channel, iob);
2034                 return -EOPNOTSUPP;
2035         }
2036
2037         /* send request */
2038         rc = qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb,
2039                                (void *) cbctl);
2040
2041         return qeth_l2_vnicc_makerc(card, rc);
2042 }
2043
2044 /* VNICC query VNIC characteristics request */
2045 static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
2046 {
2047         struct _qeth_l2_vnicc_request_cbctl cbctl;
2048
2049         /* prepare callback control */
2050         cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS;
2051
2052         QETH_CARD_TEXT(card, 2, "vniccqch");
2053         return qeth_l2_vnicc_request(card, &cbctl);
2054 }
2055
2056 /* VNICC query sub commands request */
2057 static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
2058                                     u32 *sup_cmds)
2059 {
2060         struct _qeth_l2_vnicc_request_cbctl cbctl;
2061
2062         /* prepare callback control */
2063         cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS;
2064         cbctl.param.vnic_char = vnic_char;
2065         cbctl.result.sup_cmds = sup_cmds;
2066
2067         QETH_CARD_TEXT(card, 2, "vniccqcm");
2068         return qeth_l2_vnicc_request(card, &cbctl);
2069 }
2070
2071 /* VNICC enable/disable characteristic request */
2072 static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
2073                                       u32 cmd)
2074 {
2075         struct _qeth_l2_vnicc_request_cbctl cbctl;
2076
2077         /* prepare callback control */
2078         cbctl.sub_cmd = cmd;
2079         cbctl.param.vnic_char = vnic_char;
2080
2081         QETH_CARD_TEXT(card, 2, "vniccedc");
2082         return qeth_l2_vnicc_request(card, &cbctl);
2083 }
2084
2085 /* VNICC get/set timeout for characteristic request */
2086 static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
2087                                         u32 cmd, u32 *timeout)
2088 {
2089         struct _qeth_l2_vnicc_request_cbctl cbctl;
2090
2091         /* prepare callback control */
2092         cbctl.sub_cmd = cmd;
2093         cbctl.param.vnic_char = vnicc;
2094         if (cmd == IPA_VNICC_SET_TIMEOUT)
2095                 cbctl.param.timeout = *timeout;
2096         if (cmd == IPA_VNICC_GET_TIMEOUT)
2097                 cbctl.result.timeout = timeout;
2098
2099         QETH_CARD_TEXT(card, 2, "vniccgst");
2100         return qeth_l2_vnicc_request(card, &cbctl);
2101 }
2102
2103 /* set current VNICC flag state; called from sysfs store function */
2104 int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state)
2105 {
2106         int rc = 0;
2107         u32 cmd;
2108
2109         QETH_CARD_TEXT(card, 2, "vniccsch");
2110
2111         /* do not change anything if BridgePort is enabled */
2112         if (qeth_bridgeport_is_in_use(card))
2113                 return -EBUSY;
2114
2115         /* check if characteristic and enable/disable are supported */
2116         if (!(card->options.vnicc.sup_chars & vnicc) ||
2117             !(card->options.vnicc.set_char_sup & vnicc))
2118                 return -EOPNOTSUPP;
2119
2120         /* set enable/disable command and store wanted characteristic */
2121         if (state) {
2122                 cmd = IPA_VNICC_ENABLE;
2123                 card->options.vnicc.wanted_chars |= vnicc;
2124         } else {
2125                 cmd = IPA_VNICC_DISABLE;
2126                 card->options.vnicc.wanted_chars &= ~vnicc;
2127         }
2128
2129         /* do we need to do anything? */
2130         if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars)
2131                 return rc;
2132
2133         /* if card is not ready, simply stop here */
2134         if (!qeth_card_hw_is_reachable(card)) {
2135                 if (state)
2136                         card->options.vnicc.cur_chars |= vnicc;
2137                 else
2138                         card->options.vnicc.cur_chars &= ~vnicc;
2139                 return rc;
2140         }
2141
2142         rc = qeth_l2_vnicc_set_char(card, vnicc, cmd);
2143         if (rc)
2144                 card->options.vnicc.wanted_chars =
2145                         card->options.vnicc.cur_chars;
2146         else {
2147                 /* successful online VNICC change; handle special cases */
2148                 if (state && vnicc == QETH_VNICC_RX_BCAST)
2149                         card->options.vnicc.rx_bcast_enabled = true;
2150                 if (!state && vnicc == QETH_VNICC_LEARNING)
2151                         qeth_l2_vnicc_recover_timeout(card, vnicc,
2152                                         &card->options.vnicc.learning_timeout);
2153         }
2154
2155         return rc;
2156 }
2157
2158 /* get current VNICC flag state; called from sysfs show function */
2159 int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state)
2160 {
2161         int rc = 0;
2162
2163         QETH_CARD_TEXT(card, 2, "vniccgch");
2164
2165         /* do not get anything if BridgePort is enabled */
2166         if (qeth_bridgeport_is_in_use(card))
2167                 return -EBUSY;
2168
2169         /* check if characteristic is supported */
2170         if (!(card->options.vnicc.sup_chars & vnicc))
2171                 return -EOPNOTSUPP;
2172
2173         /* if card is ready, query current VNICC state */
2174         if (qeth_card_hw_is_reachable(card))
2175                 rc = qeth_l2_vnicc_query_chars(card);
2176
2177         *state = (card->options.vnicc.cur_chars & vnicc) ? true : false;
2178         return rc;
2179 }
2180
2181 /* set VNICC timeout; called from sysfs store function. Currently, only learning
2182  * supports timeout
2183  */
2184 int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout)
2185 {
2186         int rc = 0;
2187
2188         QETH_CARD_TEXT(card, 2, "vniccsto");
2189
2190         /* do not change anything if BridgePort is enabled */
2191         if (qeth_bridgeport_is_in_use(card))
2192                 return -EBUSY;
2193
2194         /* check if characteristic and set_timeout are supported */
2195         if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2196             !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2197                 return -EOPNOTSUPP;
2198
2199         /* do we need to do anything? */
2200         if (card->options.vnicc.learning_timeout == timeout)
2201                 return rc;
2202
2203         /* if card is not ready, simply store the value internally and return */
2204         if (!qeth_card_hw_is_reachable(card)) {
2205                 card->options.vnicc.learning_timeout = timeout;
2206                 return rc;
2207         }
2208
2209         /* send timeout value to card; if successful, store value internally */
2210         rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2211                                           IPA_VNICC_SET_TIMEOUT, &timeout);
2212         if (!rc)
2213                 card->options.vnicc.learning_timeout = timeout;
2214
2215         return rc;
2216 }
2217
2218 /* get current VNICC timeout; called from sysfs show function. Currently, only
2219  * learning supports timeout
2220  */
2221 int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout)
2222 {
2223         int rc = 0;
2224
2225         QETH_CARD_TEXT(card, 2, "vniccgto");
2226
2227         /* do not get anything if BridgePort is enabled */
2228         if (qeth_bridgeport_is_in_use(card))
2229                 return -EBUSY;
2230
2231         /* check if characteristic and get_timeout are supported */
2232         if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) ||
2233             !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING))
2234                 return -EOPNOTSUPP;
2235         /* if card is ready, get timeout. Otherwise, just return stored value */
2236         *timeout = card->options.vnicc.learning_timeout;
2237         if (qeth_card_hw_is_reachable(card))
2238                 rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING,
2239                                                   IPA_VNICC_GET_TIMEOUT,
2240                                                   timeout);
2241
2242         return rc;
2243 }
2244
2245 /* check if VNICC is currently enabled */
2246 bool qeth_l2_vnicc_is_in_use(struct qeth_card *card)
2247 {
2248         /* if everything is turned off, VNICC is not active */
2249         if (!card->options.vnicc.cur_chars)
2250                 return false;
2251         /* default values are only OK if rx_bcast was not enabled by user
2252          * or the card is offline.
2253          */
2254         if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) {
2255                 if (!card->options.vnicc.rx_bcast_enabled ||
2256                     !qeth_card_hw_is_reachable(card))
2257                         return false;
2258         }
2259         return true;
2260 }
2261
2262 /* recover user timeout setting */
2263 static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc,
2264                                           u32 *timeout)
2265 {
2266         if (card->options.vnicc.sup_chars & vnicc &&
2267             card->options.vnicc.getset_timeout_sup & vnicc &&
2268             !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT,
2269                                           timeout))
2270                 return false;
2271         *timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2272         return true;
2273 }
2274
2275 /* recover user characteristic setting */
2276 static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc,
2277                                        bool enable)
2278 {
2279         u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE;
2280
2281         if (card->options.vnicc.sup_chars & vnicc &&
2282             card->options.vnicc.set_char_sup & vnicc &&
2283             !qeth_l2_vnicc_set_char(card, vnicc, cmd))
2284                 return false;
2285         card->options.vnicc.wanted_chars &= ~vnicc;
2286         card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc;
2287         return true;
2288 }
2289
2290 /* (re-)initialize VNICC */
2291 static void qeth_l2_vnicc_init(struct qeth_card *card)
2292 {
2293         u32 *timeout = &card->options.vnicc.learning_timeout;
2294         unsigned int chars_len, i;
2295         unsigned long chars_tmp;
2296         u32 sup_cmds, vnicc;
2297         bool enable, error;
2298
2299         QETH_CARD_TEXT(card, 2, "vniccini");
2300         /* reset rx_bcast */
2301         card->options.vnicc.rx_bcast_enabled = 0;
2302         /* initial query and storage of VNIC characteristics */
2303         if (qeth_l2_vnicc_query_chars(card)) {
2304                 if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT ||
2305                     *timeout != QETH_VNICC_DEFAULT_TIMEOUT)
2306                         dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2307                 /* fail quietly if user didn't change the default config */
2308                 card->options.vnicc.sup_chars = 0;
2309                 card->options.vnicc.cur_chars = 0;
2310                 card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2311                 return;
2312         }
2313         /* get supported commands for each supported characteristic */
2314         chars_tmp = card->options.vnicc.sup_chars;
2315         chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE;
2316         for_each_set_bit(i, &chars_tmp, chars_len) {
2317                 vnicc = BIT(i);
2318                 qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds);
2319                 if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) ||
2320                     !(sup_cmds & IPA_VNICC_GET_TIMEOUT))
2321                         card->options.vnicc.getset_timeout_sup &= ~vnicc;
2322                 if (!(sup_cmds & IPA_VNICC_ENABLE) ||
2323                     !(sup_cmds & IPA_VNICC_DISABLE))
2324                         card->options.vnicc.set_char_sup &= ~vnicc;
2325         }
2326         /* enforce assumed default values and recover settings, if changed  */
2327         error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING,
2328                                               timeout);
2329         chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT;
2330         chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE;
2331         chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE;
2332         for_each_set_bit(i, &chars_tmp, chars_len) {
2333                 vnicc = BIT(i);
2334                 enable = card->options.vnicc.wanted_chars & vnicc;
2335                 error |= qeth_l2_vnicc_recover_char(card, vnicc, enable);
2336         }
2337         if (error)
2338                 dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n");
2339 }
2340
2341 /* configure default values of VNIC characteristics */
2342 static void qeth_l2_vnicc_set_defaults(struct qeth_card *card)
2343 {
2344         /* characteristics values */
2345         card->options.vnicc.sup_chars = QETH_VNICC_ALL;
2346         card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT;
2347         card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT;
2348         /* supported commands */
2349         card->options.vnicc.set_char_sup = QETH_VNICC_ALL;
2350         card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING;
2351         /* settings wanted by users */
2352         card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT;
2353 }
2354
2355 module_init(qeth_l2_init);
2356 module_exit(qeth_l2_exit);
2357 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2358 MODULE_DESCRIPTION("qeth layer 2 discipline");
2359 MODULE_LICENSE("GPL");