drivers/s390/net/qeth_l2_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/string.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/slab.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/ip.h>
  20 #include <linux/list.h>
  21 #include <linux/hash.h>
  22 #include <linux/hashtable.h>
  23 #include <linux/string.h>
  24 #include <asm/setup.h>
  25 #include "qeth_core.h"
  26 #include "qeth_l2.h"
  27
  28 static int qeth_l2_set_offline(struct ccwgroup_device *);
  29 static int qeth_l2_stop(struct net_device *);
  30 static void qeth_l2_set_rx_mode(struct net_device *);
  31 static void qeth_bridgeport_query_support(struct qeth_card *card);
  32 static void qeth_bridge_state_change(struct qeth_card *card,
  33                                         struct qeth_ipa_cmd *cmd);
  34 static void qeth_bridge_host_event(struct qeth_card *card,
  35                                         struct qeth_ipa_cmd *cmd);
  36
  37 static int qeth_l2_verify_dev(struct net_device *dev)
  38 {
  39         struct qeth_card *card;
  40         unsigned long flags;
  41         int rc = 0;
  42
  43         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
  44         list_for_each_entry(card, &qeth_core_card_list.list, list) {
  45                 if (card->dev == dev) {
  46                         rc = QETH_REAL_CARD;
  47                         break;
  48                 }
  49         }
  50         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
  51
  52         return rc;
  53 }
  54
  55 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
  56 {
  57         struct qeth_card *card;
  58         struct net_device *ndev;
  59         __u16 temp_dev_no;
  60         unsigned long flags;
  61         struct ccw_dev_id read_devid;
  62
  63         ndev = NULL;
  64         memcpy(&temp_dev_no, read_dev_no, 2);
  65         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
  66         list_for_each_entry(card, &qeth_core_card_list.list, list) {
  67                 ccw_device_get_id(CARD_RDEV(card), &read_devid);
  68                 if (read_devid.devno == temp_dev_no) {
  69                         ndev = card->dev;
  70                         break;
  71                 }
  72         }
  73         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
  74         return ndev;
  75 }
  76
  77 static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
  78 {
  79         int rc;
  80
  81         if (retcode)
  82                 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
  83         switch (retcode) {
  84         case IPA_RC_SUCCESS:
  85                 rc = 0;
  86                 break;
  87         case IPA_RC_L2_UNSUPPORTED_CMD:
  88                 rc = -EOPNOTSUPP;
  89                 break;
  90         case IPA_RC_L2_ADDR_TABLE_FULL:
  91                 rc = -ENOSPC;
  92                 break;
  93         case IPA_RC_L2_DUP_MAC:
  94         case IPA_RC_L2_DUP_LAYER3_MAC:
  95                 rc = -EEXIST;
  96                 break;
  97         case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
  98         case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
  99                 rc = -EPERM;
 100                 break;
 101         case IPA_RC_L2_MAC_NOT_FOUND:
 102                 rc = -ENOENT;
 103                 break;
 104         case -ENOMEM:
 105                 rc = -ENOMEM;
 106                 break;
 107         default:
 108                 rc = -EIO;
 109                 break;
 110         }
 111         return rc;
 112 }
 113
 114 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
 115                            enum qeth_ipa_cmds ipacmd)
 116 {
 117         struct qeth_ipa_cmd *cmd;
 118         struct qeth_cmd_buffer *iob;
 119
 120         QETH_CARD_TEXT(card, 2, "L2sdmac");
 121         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 122         if (!iob)
 123                 return -ENOMEM;
 124         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 125         cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
 126         memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
 127         return qeth_setdel_makerc(card, qeth_send_ipa_cmd(card, iob,
 128                                         NULL, NULL));
 129 }
 130
 131 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
 132 {
 133         int rc;
 134
 135         QETH_CARD_TEXT(card, 2, "L2Setmac");
 136         rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC);
 137         if (rc == 0) {
 138                 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 139                 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
 140                 dev_info(&card->gdev->dev,
 141                         "MAC address %pM successfully registered on device %s\n",
 142                         card->dev->dev_addr, card->dev->name);
 143         } else {
 144                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 145                 switch (rc) {
 146                 case -EEXIST:
 147                         dev_warn(&card->gdev->dev,
 148                                 "MAC address %pM already exists\n", mac);
 149                         break;
 150                 case -EPERM:
 151                         dev_warn(&card->gdev->dev,
 152                                 "MAC address %pM is not authorized\n", mac);
 153                         break;
 154                 }
 155         }
 156         return rc;
 157 }
 158
 159 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
 160 {
 161         int rc;
 162
 163         QETH_CARD_TEXT(card, 2, "L2Delmac");
 164         if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
 165                 return 0;
 166         rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC);
 167         if (rc == 0)
 168                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 169         return rc;
 170 }
 171
 172 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
 173 {
 174         int rc;
 175
 176         QETH_CARD_TEXT(card, 2, "L2Sgmac");
 177         rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC);
 178         if (rc == -EEXIST)
 179                 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
 180                         mac, QETH_CARD_IFNAME(card));
 181         else if (rc)
 182                 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
 183                         mac, QETH_CARD_IFNAME(card), rc);
 184         return rc;
 185 }
 186
 187 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
 188 {
 189         int rc;
 190
 191         QETH_CARD_TEXT(card, 2, "L2Dgmac");
 192         rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC);
 193         if (rc)
 194                 QETH_DBF_MESSAGE(2,
 195                         "Could not delete group MAC %pM on %s: %d\n",
 196                         mac, QETH_CARD_IFNAME(card), rc);
 197         return rc;
 198 }
 199
 200 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
 201 {
 202         if (mac->is_uc) {
 203                 return qeth_l2_send_setdelmac(card, mac->mac_addr,
 204                                                 IPA_CMD_SETVMAC);
 205         } else {
 206                 return qeth_l2_send_setgroupmac(card, mac->mac_addr);
 207         }
 208 }
 209
 210 static int qeth_l2_remove_mac(struct qeth_card *card, struct qeth_mac *mac)
 211 {
 212         if (mac->is_uc) {
 213                 return qeth_l2_send_setdelmac(card, mac->mac_addr,
 214                                                 IPA_CMD_DELVMAC);
 215         } else {
 216                 return qeth_l2_send_delgroupmac(card, mac->mac_addr);
 217         }
 218 }
 219
 220 static void qeth_l2_del_all_macs(struct qeth_card *card)
 221 {
 222         struct qeth_mac *mac;
 223         struct hlist_node *tmp;
 224         int i;
 225
 226         spin_lock_bh(&card->mclock);
 227         hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
 228                 hash_del(&mac->hnode);
 229                 kfree(mac);
 230         }
 231         spin_unlock_bh(&card->mclock);
 232 }
 233
 234 static int qeth_l2_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
 235 {
 236         if (card->info.type == QETH_CARD_TYPE_OSN)
 237                 return RTN_UNSPEC;
 238         if (is_broadcast_ether_addr(skb->data))
 239                 return RTN_BROADCAST;
 240         if (is_multicast_ether_addr(skb->data))
 241                 return RTN_MULTICAST;
 242         return RTN_UNSPEC;
 243 }
 244
 245 static void qeth_l2_hdr_csum(struct qeth_card *card, struct qeth_hdr *hdr,
 246                              struct sk_buff *skb)
 247 {
 248         struct iphdr *iph = ip_hdr(skb);
 249
 250         /* tcph->check contains already the pseudo hdr checksum
 251          * so just set the header flags
 252          */
 253         if (iph->protocol == IPPROTO_UDP)
 254                 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
 255         hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
 256                 QETH_HDR_EXT_CSUM_HDR_REQ;
 257         iph->check = 0;
 258         if (card->options.performance_stats)
 259                 card->perf_stats.tx_csum++;
 260 }
 261
 262 static void qeth_l2_fill_header(struct qeth_hdr *hdr, struct sk_buff *skb,
 263                                 int cast_type, unsigned int data_len)
 264 {
 265         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
 266
 267         memset(hdr, 0, sizeof(struct qeth_hdr));
 268         hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
 269         hdr->hdr.l2.pkt_length = data_len;
 270
 271         /* set byte byte 3 to casting flags */
 272         if (cast_type == RTN_MULTICAST)
 273                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 274         else if (cast_type == RTN_BROADCAST)
 275                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
 276         else
 277                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 278
 279         /* VSWITCH relies on the VLAN
 280          * information to be present in
 281          * the QDIO header */
 282         if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
 283                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
 284                 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
 285         }
 286 }
 287
 288 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
 289                         struct qeth_reply *reply, unsigned long data)
 290 {
 291         struct qeth_ipa_cmd *cmd;
 292
 293         QETH_CARD_TEXT(card, 2, "L2sdvcb");
 294         cmd = (struct qeth_ipa_cmd *) data;
 295         if (cmd->hdr.return_code) {
 296                 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
 297                           "Continuing\n", cmd->data.setdelvlan.vlan_id,
 298                           QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 299                 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
 300                 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
 301         }
 302         return 0;
 303 }
 304
 305 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
 306                                 enum qeth_ipa_cmds ipacmd)
 307 {
 308         struct qeth_ipa_cmd *cmd;
 309         struct qeth_cmd_buffer *iob;
 310
 311         QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
 312         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 313         if (!iob)
 314                 return -ENOMEM;
 315         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 316         cmd->data.setdelvlan.vlan_id = i;
 317         return qeth_send_ipa_cmd(card, iob,
 318                                  qeth_l2_send_setdelvlan_cb, NULL);
 319 }
 320
 321 static void qeth_l2_process_vlans(struct qeth_card *card)
 322 {
 323         struct qeth_vlan_vid *id;
 324         QETH_CARD_TEXT(card, 3, "L2prcvln");
 325         spin_lock_bh(&card->vlanlock);
 326         list_for_each_entry(id, &card->vid_list, list) {
 327                 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
 328         }
 329         spin_unlock_bh(&card->vlanlock);
 330 }
 331
 332 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
 333                                    __be16 proto, u16 vid)
 334 {
 335         struct qeth_card *card = dev->ml_priv;
 336         struct qeth_vlan_vid *id;
 337         int rc;
 338
 339         QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
 340         if (!vid)
 341                 return 0;
 342         if (card->info.type == QETH_CARD_TYPE_OSM) {
 343                 QETH_CARD_TEXT(card, 3, "aidOSM");
 344                 return 0;
 345         }
 346         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 347                 QETH_CARD_TEXT(card, 3, "aidREC");
 348                 return 0;
 349         }
 350         id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
 351         if (id) {
 352                 id->vid = vid;
 353                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
 354                 if (rc) {
 355                         kfree(id);
 356                         return rc;
 357                 }
 358                 spin_lock_bh(&card->vlanlock);
 359                 list_add_tail(&id->list, &card->vid_list);
 360                 spin_unlock_bh(&card->vlanlock);
 361         } else {
 362                 return -ENOMEM;
 363         }
 364         return 0;
 365 }
 366
 367 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
 368                                     __be16 proto, u16 vid)
 369 {
 370         struct qeth_vlan_vid *id, *tmpid = NULL;
 371         struct qeth_card *card = dev->ml_priv;
 372         int rc = 0;
 373
 374         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
 375         if (card->info.type == QETH_CARD_TYPE_OSM) {
 376                 QETH_CARD_TEXT(card, 3, "kidOSM");
 377                 return 0;
 378         }
 379         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 380                 QETH_CARD_TEXT(card, 3, "kidREC");
 381                 return 0;
 382         }
 383         spin_lock_bh(&card->vlanlock);
 384         list_for_each_entry(id, &card->vid_list, list) {
 385                 if (id->vid == vid) {
 386                         list_del(&id->list);
 387                         tmpid = id;
 388                         break;
 389                 }
 390         }
 391         spin_unlock_bh(&card->vlanlock);
 392         if (tmpid) {
 393                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
 394                 kfree(tmpid);
 395         }
 396         qeth_l2_set_rx_mode(card->dev);
 397         return rc;
 398 }
 399
 400 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
 401 {
 402         QETH_DBF_TEXT(SETUP , 2, "stopcard");
 403         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 404
 405         qeth_set_allowed_threads(card, 0, 1);
 406         if (card->read.state == CH_STATE_UP &&
 407             card->write.state == CH_STATE_UP &&
 408             (card->state == CARD_STATE_UP)) {
 409                 if (recovery_mode &&
 410                     card->info.type != QETH_CARD_TYPE_OSN) {
 411                         qeth_l2_stop(card->dev);
 412                 } else {
 413                         rtnl_lock();
 414                         dev_close(card->dev);
 415                         rtnl_unlock();
 416                 }
 417                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 418                 card->state = CARD_STATE_SOFTSETUP;
 419         }
 420         if (card->state == CARD_STATE_SOFTSETUP) {
 421                 qeth_l2_del_all_macs(card);
 422                 qeth_clear_ipacmd_list(card);
 423                 card->state = CARD_STATE_HARDSETUP;
 424         }
 425         if (card->state == CARD_STATE_HARDSETUP) {
 426                 qeth_qdio_clear_card(card, 0);
 427                 qeth_clear_qdio_buffers(card);
 428                 qeth_clear_working_pool_list(card);
 429                 card->state = CARD_STATE_DOWN;
 430         }
 431         if (card->state == CARD_STATE_DOWN) {
 432                 qeth_clear_cmd_buffers(&card->read);
 433                 qeth_clear_cmd_buffers(&card->write);
 434         }
 435 }
 436
 437 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
 438                                 int budget, int *done)
 439 {
 440         int work_done = 0;
 441         struct sk_buff *skb;
 442         struct qeth_hdr *hdr;
 443         unsigned int len;
 444
 445         *done = 0;
 446         WARN_ON_ONCE(!budget);
 447         while (budget) {
 448                 skb = qeth_core_get_next_skb(card,
 449                         &card->qdio.in_q->bufs[card->rx.b_index],
 450                         &card->rx.b_element, &card->rx.e_offset, &hdr);
 451                 if (!skb) {
 452                         *done = 1;
 453                         break;
 454                 }
 455                 skb->dev = card->dev;
 456                 switch (hdr->hdr.l2.id) {
 457                 case QETH_HEADER_TYPE_LAYER2:
 458                         skb->pkt_type = PACKET_HOST;
 459                         skb->protocol = eth_type_trans(skb, skb->dev);
 460                         if ((card->dev->features & NETIF_F_RXCSUM)
 461                            && ((hdr->hdr.l2.flags[1] &
 462                                 (QETH_HDR_EXT_CSUM_HDR_REQ |
 463                                    QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
 464                                 (QETH_HDR_EXT_CSUM_HDR_REQ |
 465                                    QETH_HDR_EXT_CSUM_TRANSP_REQ)))
 466                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 467                         else
 468                                 skb->ip_summed = CHECKSUM_NONE;
 469                         if (skb->protocol == htons(ETH_P_802_2))
 470                                 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
 471                         len = skb->len;
 472                         napi_gro_receive(&card->napi, skb);
 473                         break;
 474                 case QETH_HEADER_TYPE_OSN:
 475                         if (card->info.type == QETH_CARD_TYPE_OSN) {
 476                                 skb_push(skb, sizeof(struct qeth_hdr));
 477                                 skb_copy_to_linear_data(skb, hdr,
 478                                                 sizeof(struct qeth_hdr));
 479                                 len = skb->len;
 480                                 card->osn_info.data_cb(skb);
 481                                 break;
 482                         }
 483                         /* else unknown */
 484                 default:
 485                         dev_kfree_skb_any(skb);
 486                         QETH_CARD_TEXT(card, 3, "inbunkno");
 487                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
 488                         continue;
 489                 }
 490                 work_done++;
 491                 budget--;
 492                 card->stats.rx_packets++;
 493                 card->stats.rx_bytes += len;
 494         }
 495         return work_done;
 496 }
 497
 498 static int qeth_l2_request_initial_mac(struct qeth_card *card)
 499 {
 500         int rc = 0;
 501         char vendor_pre[] = {0x02, 0x00, 0x00};
 502
 503         QETH_DBF_TEXT(SETUP, 2, "l2reqmac");
 504         QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
 505
 506         if (MACHINE_IS_VM) {
 507                 rc = qeth_vm_request_mac(card);
 508                 if (!rc)
 509                         goto out;
 510                 QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %s: x%x\n",
 511                                  CARD_BUS_ID(card), rc);
 512                 QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc);
 513                 /* fall back to alternative mechanism: */
 514         }
 515
 516         if (card->info.type == QETH_CARD_TYPE_IQD ||
 517             card->info.type == QETH_CARD_TYPE_OSM ||
 518             card->info.type == QETH_CARD_TYPE_OSX ||
 519             card->info.guestlan) {
 520                 rc = qeth_setadpparms_change_macaddr(card);
 521                 if (rc) {
 522                         QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
 523                                 "device %s: x%x\n", CARD_BUS_ID(card), rc);
 524                         QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
 525                         return rc;
 526                 }
 527         } else {
 528                 eth_random_addr(card->dev->dev_addr);
 529                 memcpy(card->dev->dev_addr, vendor_pre, 3);
 530         }
 531 out:
 532         QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len);
 533         return 0;
 534 }
 535
 536 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
 537 {
 538         struct sockaddr *addr = p;
 539         struct qeth_card *card = dev->ml_priv;
 540         int rc = 0;
 541
 542         QETH_CARD_TEXT(card, 3, "setmac");
 543
 544         if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
 545                 QETH_CARD_TEXT(card, 3, "setmcINV");
 546                 return -EOPNOTSUPP;
 547         }
 548
 549         if (card->info.type == QETH_CARD_TYPE_OSN ||
 550             card->info.type == QETH_CARD_TYPE_OSM ||
 551             card->info.type == QETH_CARD_TYPE_OSX) {
 552                 QETH_CARD_TEXT(card, 3, "setmcTYP");
 553                 return -EOPNOTSUPP;
 554         }
 555         QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
 556         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 557                 QETH_CARD_TEXT(card, 3, "setmcREC");
 558                 return -ERESTARTSYS;
 559         }
 560         rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
 561         if (!rc || (rc == -ENOENT))
 562                 rc = qeth_l2_send_setmac(card, addr->sa_data);
 563         return rc ? -EINVAL : 0;
 564 }
 565
 566 static void qeth_promisc_to_bridge(struct qeth_card *card)
 567 {
 568         struct net_device *dev = card->dev;
 569         enum qeth_ipa_promisc_modes promisc_mode;
 570         int role;
 571         int rc;
 572
 573         QETH_CARD_TEXT(card, 3, "pmisc2br");
 574
 575         if (!card->options.sbp.reflect_promisc)
 576                 return;
 577         promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
 578                                                 : SET_PROMISC_MODE_OFF;
 579         if (promisc_mode == card->info.promisc_mode)
 580                 return;
 581
 582         if (promisc_mode == SET_PROMISC_MODE_ON) {
 583                 if (card->options.sbp.reflect_promisc_primary)
 584                         role = QETH_SBP_ROLE_PRIMARY;
 585                 else
 586                         role = QETH_SBP_ROLE_SECONDARY;
 587         } else
 588                 role = QETH_SBP_ROLE_NONE;
 589
 590         rc = qeth_bridgeport_setrole(card, role);
 591         QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
 592                         (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
 593         if (!rc) {
 594                 card->options.sbp.role = role;
 595                 card->info.promisc_mode = promisc_mode;
 596         }
 597
 598 }
 599 /* New MAC address is added to the hash table and marked to be written on card
 600  * only if there is not in the hash table storage already
 601  *
 602 */
 603 static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha,
 604                             u8 is_uc)
 605 {
 606         u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2]));
 607         struct qeth_mac *mac;
 608
 609         hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) {
 610                 if (is_uc == mac->is_uc &&
 611                     !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
 612                         mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 613                         return;
 614                 }
 615         }
 616
 617         mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
 618
 619         if (!mac)
 620                 return;
 621
 622         memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
 623         mac->is_uc = is_uc;
 624         mac->disp_flag = QETH_DISP_ADDR_ADD;
 625
 626         hash_add(card->mac_htable, &mac->hnode, mac_hash);
 627 }
 628
 629 static void qeth_l2_set_rx_mode(struct net_device *dev)
 630 {
 631         struct qeth_card *card = dev->ml_priv;
 632         struct netdev_hw_addr *ha;
 633         struct qeth_mac *mac;
 634         struct hlist_node *tmp;
 635         int i;
 636         int rc;
 637
 638         if (card->info.type == QETH_CARD_TYPE_OSN)
 639                 return;
 640
 641         QETH_CARD_TEXT(card, 3, "setmulti");
 642         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
 643             (card->state != CARD_STATE_UP))
 644                 return;
 645
 646         spin_lock_bh(&card->mclock);
 647
 648         netdev_for_each_mc_addr(ha, dev)
 649                 qeth_l2_add_mac(card, ha, 0);
 650
 651         netdev_for_each_uc_addr(ha, dev)
 652                 qeth_l2_add_mac(card, ha, 1);
 653
 654         hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
 655                 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
 656                         qeth_l2_remove_mac(card, mac);
 657                         hash_del(&mac->hnode);
 658                         kfree(mac);
 659
 660                 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
 661                         rc = qeth_l2_write_mac(card, mac);
 662                         if (rc) {
 663                                 hash_del(&mac->hnode);
 664                                 kfree(mac);
 665                         } else
 666                                 mac->disp_flag = QETH_DISP_ADDR_DELETE;
 667                 } else
 668                         mac->disp_flag = QETH_DISP_ADDR_DELETE;
 669         }
 670
 671         spin_unlock_bh(&card->mclock);
 672
 673         if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 674                 qeth_setadp_promisc_mode(card);
 675         else
 676                 qeth_promisc_to_bridge(card);
 677 }
 678
 679 static int qeth_l2_xmit_iqd(struct qeth_card *card, struct sk_buff *skb,
 680                             struct qeth_qdio_out_q *queue, int cast_type)
 681 {
 682         unsigned int data_offset = ETH_HLEN;
 683         struct qeth_hdr *hdr;
 684         int rc;
 685
 686         hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
 687         if (!hdr)
 688                 return -ENOMEM;
 689         qeth_l2_fill_header(hdr, skb, cast_type, skb->len);
 690         skb_copy_from_linear_data(skb, ((char *)hdr) + sizeof(*hdr),
 691                                   data_offset);
 692
 693         if (!qeth_get_elements_no(card, skb, 1, data_offset)) {
 694                 rc = -E2BIG;
 695                 goto out;
 696         }
 697         rc = qeth_do_send_packet_fast(card, queue, skb, hdr, data_offset,
 698                                       sizeof(*hdr) + data_offset);
 699 out:
 700         if (rc)
 701                 kmem_cache_free(qeth_core_header_cache, hdr);
 702         return rc;
 703 }
 704
 705 static int qeth_l2_xmit_osa(struct qeth_card *card, struct sk_buff *skb,
 706                             struct qeth_qdio_out_q *queue, int cast_type)
 707 {
 708         unsigned int elements, nr_frags;
 709         struct sk_buff *skb_copy;
 710         struct qeth_hdr *hdr;
 711         int rc;
 712
 713         /* fix hardware limitation: as long as we do not have sbal
 714          * chaining we can not send long frag lists
 715          */
 716         if (!qeth_get_elements_no(card, skb, 0, 0)) {
 717                 rc = skb_linearize(skb);
 718
 719                 if (card->options.performance_stats) {
 720                         if (rc)
 721                                 card->perf_stats.tx_linfail++;
 722                         else
 723                                 card->perf_stats.tx_lin++;
 724                 }
 725                 if (rc)
 726                         return rc;
 727         }
 728         nr_frags = skb_shinfo(skb)->nr_frags;
 729
 730         /* create a copy with writeable headroom */
 731         skb_copy = skb_realloc_headroom(skb, sizeof(struct qeth_hdr));
 732         if (!skb_copy)
 733                 return -ENOMEM;
 734         hdr = skb_push(skb_copy, sizeof(struct qeth_hdr));
 735         qeth_l2_fill_header(hdr, skb_copy, cast_type,
 736                             skb_copy->len - sizeof(*hdr));
 737         if (skb_copy->ip_summed == CHECKSUM_PARTIAL)
 738                 qeth_l2_hdr_csum(card, hdr, skb_copy);
 739
 740         elements = qeth_get_elements_no(card, skb_copy, 0, 0);
 741         if (!elements) {
 742                 rc = -E2BIG;
 743                 goto out;
 744         }
 745         if (qeth_hdr_chk_and_bounce(skb_copy, &hdr, sizeof(*hdr))) {
 746                 rc = -EINVAL;
 747                 goto out;
 748         }
 749         rc = qeth_do_send_packet(card, queue, skb_copy, hdr, 0, 0, elements);
 750 out:
 751         if (!rc) {
 752                 /* tx success, free dangling original */
 753                 dev_kfree_skb_any(skb);
 754                 if (card->options.performance_stats && nr_frags) {
 755                         card->perf_stats.sg_skbs_sent++;
 756                         /* nr_frags + skb->data */
 757                         card->perf_stats.sg_frags_sent += nr_frags + 1;
 758                 }
 759         } else {
 760                 /* tx fail, free copy */
 761                 dev_kfree_skb_any(skb_copy);
 762         }
 763         return rc;
 764 }
 765
 766 static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
 767                             struct qeth_qdio_out_q *queue)
 768 {
 769         unsigned int elements;
 770         struct qeth_hdr *hdr;
 771
 772         if (skb->protocol == htons(ETH_P_IPV6))
 773                 return -EPROTONOSUPPORT;
 774
 775         hdr = (struct qeth_hdr *)skb->data;
 776         elements = qeth_get_elements_no(card, skb, 0, 0);
 777         if (!elements)
 778                 return -E2BIG;
 779         if (qeth_hdr_chk_and_bounce(skb, &hdr, sizeof(*hdr)))
 780                 return -EINVAL;
 781         return qeth_do_send_packet(card, queue, skb, hdr, 0, 0, elements);
 782 }
 783
 784 static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb,
 785                                            struct net_device *dev)
 786 {
 787         struct qeth_card *card = dev->ml_priv;
 788         int cast_type = qeth_l2_get_cast_type(card, skb);
 789         struct qeth_qdio_out_q *queue;
 790         int tx_bytes = skb->len;
 791         int rc;
 792
 793         if (card->qdio.do_prio_queueing || (cast_type &&
 794                                         card->info.is_multicast_different))
 795                 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
 796                                         qeth_get_ip_version(skb), cast_type)];
 797         else
 798                 queue = card->qdio.out_qs[card->qdio.default_out_queue];
 799
 800         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
 801                 card->stats.tx_carrier_errors++;
 802                 goto tx_drop;
 803         }
 804
 805         if (card->options.performance_stats) {
 806                 card->perf_stats.outbound_cnt++;
 807                 card->perf_stats.outbound_start_time = qeth_get_micros();
 808         }
 809         netif_stop_queue(dev);
 810
 811         switch (card->info.type) {
 812         case QETH_CARD_TYPE_OSN:
 813                 rc = qeth_l2_xmit_osn(card, skb, queue);
 814                 break;
 815         case QETH_CARD_TYPE_IQD:
 816                 rc = qeth_l2_xmit_iqd(card, skb, queue, cast_type);
 817                 break;
 818         default:
 819                 rc = qeth_l2_xmit_osa(card, skb, queue, cast_type);
 820         }
 821
 822         if (!rc) {
 823                 card->stats.tx_packets++;
 824                 card->stats.tx_bytes += tx_bytes;
 825                 if (card->options.performance_stats)
 826                         card->perf_stats.outbound_time += qeth_get_micros() -
 827                                 card->perf_stats.outbound_start_time;
 828                 netif_wake_queue(dev);
 829                 return NETDEV_TX_OK;
 830         } else if (rc == -EBUSY) {
 831                 return NETDEV_TX_BUSY;
 832         } /* else fall through */
 833
 834 tx_drop:
 835         card->stats.tx_dropped++;
 836         card->stats.tx_errors++;
 837         dev_kfree_skb_any(skb);
 838         netif_wake_queue(dev);
 839         return NETDEV_TX_OK;
 840 }
 841
 842 static int __qeth_l2_open(struct net_device *dev)
 843 {
 844         struct qeth_card *card = dev->ml_priv;
 845         int rc = 0;
 846
 847         QETH_CARD_TEXT(card, 4, "qethopen");
 848         if (card->state == CARD_STATE_UP)
 849                 return rc;
 850         if (card->state != CARD_STATE_SOFTSETUP)
 851                 return -ENODEV;
 852
 853         if ((card->info.type != QETH_CARD_TYPE_OSN) &&
 854              (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
 855                 QETH_CARD_TEXT(card, 4, "nomacadr");
 856                 return -EPERM;
 857         }
 858         card->data.state = CH_STATE_UP;
 859         card->state = CARD_STATE_UP;
 860         netif_start_queue(dev);
 861
 862         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
 863                 napi_enable(&card->napi);
 864                 napi_schedule(&card->napi);
 865         } else
 866                 rc = -EIO;
 867         return rc;
 868 }
 869
 870 static int qeth_l2_open(struct net_device *dev)
 871 {
 872         struct qeth_card *card = dev->ml_priv;
 873
 874         QETH_CARD_TEXT(card, 5, "qethope_");
 875         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 876                 QETH_CARD_TEXT(card, 3, "openREC");
 877                 return -ERESTARTSYS;
 878         }
 879         return __qeth_l2_open(dev);
 880 }
 881
 882 static int qeth_l2_stop(struct net_device *dev)
 883 {
 884         struct qeth_card *card = dev->ml_priv;
 885
 886         QETH_CARD_TEXT(card, 4, "qethstop");
 887         netif_tx_disable(dev);
 888         if (card->state == CARD_STATE_UP) {
 889                 card->state = CARD_STATE_SOFTSETUP;
 890                 napi_disable(&card->napi);
 891         }
 892         return 0;
 893 }
 894
 895 static const struct device_type qeth_l2_devtype = {
 896         .name = "qeth_layer2",
 897         .groups = qeth_l2_attr_groups,
 898 };
 899
 900 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
 901 {
 902         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 903         int rc;
 904
 905         if (gdev->dev.type == &qeth_generic_devtype) {
 906                 rc = qeth_l2_create_device_attributes(&gdev->dev);
 907                 if (rc)
 908                         return rc;
 909         }
 910         INIT_LIST_HEAD(&card->vid_list);
 911         hash_init(card->mac_htable);
 912         card->options.layer2 = 1;
 913         card->info.hwtrap = 0;
 914         return 0;
 915 }
 916
 917 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
 918 {
 919         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
 920
 921         if (cgdev->dev.type == &qeth_generic_devtype)
 922                 qeth_l2_remove_device_attributes(&cgdev->dev);
 923         qeth_set_allowed_threads(card, 0, 1);
 924         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
 925
 926         if (cgdev->state == CCWGROUP_ONLINE)
 927                 qeth_l2_set_offline(cgdev);
 928
 929         if (card->dev) {
 930                 netif_napi_del(&card->napi);
 931                 unregister_netdev(card->dev);
 932                 card->dev = NULL;
 933         }
 934         return;
 935 }
 936
 937 static const struct ethtool_ops qeth_l2_ethtool_ops = {
 938         .get_link = ethtool_op_get_link,
 939         .get_strings = qeth_core_get_strings,
 940         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 941         .get_sset_count = qeth_core_get_sset_count,
 942         .get_drvinfo = qeth_core_get_drvinfo,
 943         .get_link_ksettings = qeth_core_ethtool_get_link_ksettings,
 944 };
 945
 946 static const struct ethtool_ops qeth_l2_osn_ops = {
 947         .get_strings = qeth_core_get_strings,
 948         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 949         .get_sset_count = qeth_core_get_sset_count,
 950         .get_drvinfo = qeth_core_get_drvinfo,
 951 };
 952
 953 static const struct net_device_ops qeth_l2_netdev_ops = {
 954         .ndo_open               = qeth_l2_open,
 955         .ndo_stop               = qeth_l2_stop,
 956         .ndo_get_stats          = qeth_get_stats,
 957         .ndo_start_xmit         = qeth_l2_hard_start_xmit,
 958         .ndo_validate_addr      = eth_validate_addr,
 959         .ndo_set_rx_mode        = qeth_l2_set_rx_mode,
 960         .ndo_do_ioctl           = qeth_do_ioctl,
 961         .ndo_set_mac_address    = qeth_l2_set_mac_address,
 962         .ndo_change_mtu         = qeth_change_mtu,
 963         .ndo_vlan_rx_add_vid    = qeth_l2_vlan_rx_add_vid,
 964         .ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
 965         .ndo_tx_timeout         = qeth_tx_timeout,
 966         .ndo_fix_features       = qeth_fix_features,
 967         .ndo_set_features       = qeth_set_features
 968 };
 969
 970 static int qeth_l2_setup_netdev(struct qeth_card *card)
 971 {
 972         switch (card->info.type) {
 973         case QETH_CARD_TYPE_IQD:
 974                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
 975                                          ether_setup);
 976                 break;
 977         case QETH_CARD_TYPE_OSN:
 978                 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
 979                                          ether_setup);
 980                 break;
 981         default:
 982                 card->dev = alloc_etherdev(0);
 983         }
 984
 985         if (!card->dev)
 986                 return -ENODEV;
 987
 988         card->dev->ml_priv = card;
 989         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
 990         card->dev->mtu = card->info.initial_mtu;
 991         card->dev->min_mtu = 64;
 992         card->dev->max_mtu = ETH_MAX_MTU;
 993         card->dev->netdev_ops = &qeth_l2_netdev_ops;
 994         if (card->info.type == QETH_CARD_TYPE_OSN) {
 995                 card->dev->ethtool_ops = &qeth_l2_osn_ops;
 996                 card->dev->flags |= IFF_NOARP;
 997         } else {
 998                 card->dev->ethtool_ops = &qeth_l2_ethtool_ops;
 999         }
1000         card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1001         if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
1002                 card->dev->hw_features = NETIF_F_SG;
1003                 card->dev->vlan_features = NETIF_F_SG;
1004                 /* OSA 3S and earlier has no RX/TX support */
1005                 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
1006                         card->dev->hw_features |= NETIF_F_IP_CSUM;
1007                         card->dev->vlan_features |= NETIF_F_IP_CSUM;
1008                 }
1009                 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1010                         card->dev->hw_features |= NETIF_F_RXCSUM;
1011                         card->dev->vlan_features |= NETIF_F_RXCSUM;
1012                 }
1013         }
1014         card->info.broadcast_capable = 1;
1015         qeth_l2_request_initial_mac(card);
1016         card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
1017                                   PAGE_SIZE;
1018         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1019         netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT);
1020         netif_carrier_off(card->dev);
1021         return register_netdev(card->dev);
1022 }
1023
1024 static int qeth_l2_start_ipassists(struct qeth_card *card)
1025 {
1026         /* configure isolation level */
1027         if (qeth_set_access_ctrl_online(card, 0))
1028                 return -ENODEV;
1029         return 0;
1030 }
1031
1032 static void qeth_l2_trace_features(struct qeth_card *card)
1033 {
1034         QETH_CARD_TEXT(card, 2, "l2featur");
1035         QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs,
1036                       sizeof(card->options.sbp.supported_funcs));
1037 }
1038
1039 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1040 {
1041         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1042         int rc = 0;
1043         enum qeth_card_states recover_flag;
1044
1045         mutex_lock(&card->discipline_mutex);
1046         mutex_lock(&card->conf_mutex);
1047         QETH_DBF_TEXT(SETUP, 2, "setonlin");
1048         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1049
1050         recover_flag = card->state;
1051         rc = qeth_core_hardsetup_card(card);
1052         if (rc) {
1053                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1054                 rc = -ENODEV;
1055                 goto out_remove;
1056         }
1057         qeth_bridgeport_query_support(card);
1058         if (card->options.sbp.supported_funcs)
1059                 dev_info(&card->gdev->dev,
1060                 "The device represents a Bridge Capable Port\n");
1061         qeth_trace_features(card);
1062         qeth_l2_trace_features(card);
1063
1064         if (!card->dev && qeth_l2_setup_netdev(card)) {
1065                 rc = -ENODEV;
1066                 goto out_remove;
1067         }
1068
1069         if (card->info.type != QETH_CARD_TYPE_OSN)
1070                 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1071
1072         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1073                 if (card->info.hwtrap &&
1074                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1075                         card->info.hwtrap = 0;
1076         } else
1077                 card->info.hwtrap = 0;
1078
1079         qeth_l2_setup_bridgeport_attrs(card);
1080
1081         card->state = CARD_STATE_HARDSETUP;
1082         memset(&card->rx, 0, sizeof(struct qeth_rx));
1083         qeth_print_status_message(card);
1084
1085         /* softsetup */
1086         QETH_DBF_TEXT(SETUP, 2, "softsetp");
1087
1088         if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1089             (card->info.type == QETH_CARD_TYPE_OSX)) {
1090                 rc = qeth_l2_start_ipassists(card);
1091                 if (rc)
1092                         goto out_remove;
1093         }
1094
1095         if (card->info.type != QETH_CARD_TYPE_OSN &&
1096             card->info.type != QETH_CARD_TYPE_OSM)
1097                 qeth_l2_process_vlans(card);
1098
1099         netif_tx_disable(card->dev);
1100
1101         rc = qeth_init_qdio_queues(card);
1102         if (rc) {
1103                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1104                 rc = -ENODEV;
1105                 goto out_remove;
1106         }
1107         card->state = CARD_STATE_SOFTSETUP;
1108         if (card->lan_online)
1109                 netif_carrier_on(card->dev);
1110         else
1111                 netif_carrier_off(card->dev);
1112
1113         qeth_set_allowed_threads(card, 0xffffffff, 0);
1114         if (recover_flag == CARD_STATE_RECOVER) {
1115                 if (recovery_mode &&
1116                     card->info.type != QETH_CARD_TYPE_OSN) {
1117                         __qeth_l2_open(card->dev);
1118                 } else {
1119                         rtnl_lock();
1120                         dev_open(card->dev);
1121                         rtnl_unlock();
1122                 }
1123                 /* this also sets saved unicast addresses */
1124                 qeth_l2_set_rx_mode(card->dev);
1125                 rtnl_lock();
1126                 qeth_recover_features(card->dev);
1127                 rtnl_unlock();
1128         }
1129         /* let user_space know that device is online */
1130         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1131         mutex_unlock(&card->conf_mutex);
1132         mutex_unlock(&card->discipline_mutex);
1133         return 0;
1134
1135 out_remove:
1136         qeth_l2_stop_card(card, 0);
1137         ccw_device_set_offline(CARD_DDEV(card));
1138         ccw_device_set_offline(CARD_WDEV(card));
1139         ccw_device_set_offline(CARD_RDEV(card));
1140         qdio_free(CARD_DDEV(card));
1141         if (recover_flag == CARD_STATE_RECOVER)
1142                 card->state = CARD_STATE_RECOVER;
1143         else
1144                 card->state = CARD_STATE_DOWN;
1145         mutex_unlock(&card->conf_mutex);
1146         mutex_unlock(&card->discipline_mutex);
1147         return rc;
1148 }
1149
1150 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1151 {
1152         return __qeth_l2_set_online(gdev, 0);
1153 }
1154
1155 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1156                                         int recovery_mode)
1157 {
1158         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1159         int rc = 0, rc2 = 0, rc3 = 0;
1160         enum qeth_card_states recover_flag;
1161
1162         mutex_lock(&card->discipline_mutex);
1163         mutex_lock(&card->conf_mutex);
1164         QETH_DBF_TEXT(SETUP, 3, "setoffl");
1165         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1166
1167         if (card->dev && netif_carrier_ok(card->dev))
1168                 netif_carrier_off(card->dev);
1169         recover_flag = card->state;
1170         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1171                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1172                 card->info.hwtrap = 1;
1173         }
1174         qeth_l2_stop_card(card, recovery_mode);
1175         rc  = ccw_device_set_offline(CARD_DDEV(card));
1176         rc2 = ccw_device_set_offline(CARD_WDEV(card));
1177         rc3 = ccw_device_set_offline(CARD_RDEV(card));
1178         if (!rc)
1179                 rc = (rc2) ? rc2 : rc3;
1180         if (rc)
1181                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1182         qdio_free(CARD_DDEV(card));
1183         if (recover_flag == CARD_STATE_UP)
1184                 card->state = CARD_STATE_RECOVER;
1185         /* let user_space know that device is offline */
1186         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1187         mutex_unlock(&card->conf_mutex);
1188         mutex_unlock(&card->discipline_mutex);
1189         return 0;
1190 }
1191
1192 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1193 {
1194         return __qeth_l2_set_offline(cgdev, 0);
1195 }
1196
1197 static int qeth_l2_recover(void *ptr)
1198 {
1199         struct qeth_card *card;
1200         int rc = 0;
1201
1202         card = (struct qeth_card *) ptr;
1203         QETH_CARD_TEXT(card, 2, "recover1");
1204         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1205                 return 0;
1206         QETH_CARD_TEXT(card, 2, "recover2");
1207         dev_warn(&card->gdev->dev,
1208                 "A recovery process has been started for the device\n");
1209         qeth_set_recovery_task(card);
1210         __qeth_l2_set_offline(card->gdev, 1);
1211         rc = __qeth_l2_set_online(card->gdev, 1);
1212         if (!rc)
1213                 dev_info(&card->gdev->dev,
1214                         "Device successfully recovered!\n");
1215         else {
1216                 qeth_close_dev(card);
1217                 dev_warn(&card->gdev->dev, "The qeth device driver "
1218                                 "failed to recover an error on the device\n");
1219         }
1220         qeth_clear_recovery_task(card);
1221         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1222         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1223         return 0;
1224 }
1225
1226 static int __init qeth_l2_init(void)
1227 {
1228         pr_info("register layer 2 discipline\n");
1229         return 0;
1230 }
1231
1232 static void __exit qeth_l2_exit(void)
1233 {
1234         pr_info("unregister layer 2 discipline\n");
1235 }
1236
1237 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1238 {
1239         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1240
1241         if (card->dev)
1242                 netif_device_detach(card->dev);
1243         qeth_set_allowed_threads(card, 0, 1);
1244         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1245         if (gdev->state == CCWGROUP_OFFLINE)
1246                 return 0;
1247         if (card->state == CARD_STATE_UP) {
1248                 if (card->info.hwtrap)
1249                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1250                 __qeth_l2_set_offline(card->gdev, 1);
1251         } else
1252                 __qeth_l2_set_offline(card->gdev, 0);
1253         return 0;
1254 }
1255
1256 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1257 {
1258         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1259         int rc = 0;
1260
1261         if (gdev->state == CCWGROUP_OFFLINE)
1262                 goto out;
1263
1264         if (card->state == CARD_STATE_RECOVER) {
1265                 rc = __qeth_l2_set_online(card->gdev, 1);
1266                 if (rc) {
1267                         rtnl_lock();
1268                         dev_close(card->dev);
1269                         rtnl_unlock();
1270                 }
1271         } else
1272                 rc = __qeth_l2_set_online(card->gdev, 0);
1273 out:
1274         qeth_set_allowed_threads(card, 0xffffffff, 0);
1275         if (card->dev)
1276                 netif_device_attach(card->dev);
1277         if (rc)
1278                 dev_warn(&card->gdev->dev, "The qeth device driver "
1279                         "failed to recover an error on the device\n");
1280         return rc;
1281 }
1282
1283 /* Returns zero if the command is successfully "consumed" */
1284 static int qeth_l2_control_event(struct qeth_card *card,
1285                                         struct qeth_ipa_cmd *cmd)
1286 {
1287         switch (cmd->hdr.command) {
1288         case IPA_CMD_SETBRIDGEPORT_OSA:
1289         case IPA_CMD_SETBRIDGEPORT_IQD:
1290                 if (cmd->data.sbp.hdr.command_code ==
1291                                 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1292                         qeth_bridge_state_change(card, cmd);
1293                         return 0;
1294                 } else
1295                         return 1;
1296         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1297                 qeth_bridge_host_event(card, cmd);
1298                 return 0;
1299         default:
1300                 return 1;
1301         }
1302 }
1303
1304 struct qeth_discipline qeth_l2_discipline = {
1305         .devtype = &qeth_l2_devtype,
1306         .start_poll = qeth_qdio_start_poll,
1307         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1308         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1309         .process_rx_buffer = qeth_l2_process_inbound_buffer,
1310         .recover = qeth_l2_recover,
1311         .setup = qeth_l2_probe_device,
1312         .remove = qeth_l2_remove_device,
1313         .set_online = qeth_l2_set_online,
1314         .set_offline = qeth_l2_set_offline,
1315         .freeze = qeth_l2_pm_suspend,
1316         .thaw = qeth_l2_pm_resume,
1317         .restore = qeth_l2_pm_resume,
1318         .do_ioctl = NULL,
1319         .control_event_handler = qeth_l2_control_event,
1320 };
1321 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1322
1323 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1324                            struct qeth_cmd_buffer *iob)
1325 {
1326         unsigned long flags;
1327         int rc = 0;
1328
1329         QETH_CARD_TEXT(card, 5, "osndctrd");
1330
1331         wait_event(card->wait_q,
1332                    atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1333         qeth_prepare_control_data(card, len, iob);
1334         QETH_CARD_TEXT(card, 6, "osnoirqp");
1335         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1336         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1337                               (addr_t) iob, 0, 0);
1338         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1339         if (rc) {
1340                 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1341                            "ccw_device_start rc = %i\n", rc);
1342                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1343                 qeth_release_buffer(iob->channel, iob);
1344                 atomic_set(&card->write.irq_pending, 0);
1345                 wake_up(&card->wait_q);
1346         }
1347         return rc;
1348 }
1349
1350 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1351                         struct qeth_cmd_buffer *iob, int data_len)
1352 {
1353         u16 s1, s2;
1354
1355         QETH_CARD_TEXT(card, 4, "osndipa");
1356
1357         qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1358         s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1359         s2 = (u16)data_len;
1360         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1361         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1362         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1363         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1364         return qeth_osn_send_control_data(card, s1, iob);
1365 }
1366
1367 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1368 {
1369         struct qeth_cmd_buffer *iob;
1370         struct qeth_card *card;
1371         int rc;
1372
1373         if (!dev)
1374                 return -ENODEV;
1375         card = dev->ml_priv;
1376         if (!card)
1377                 return -ENODEV;
1378         QETH_CARD_TEXT(card, 2, "osnsdmc");
1379         if (!qeth_card_hw_is_reachable(card))
1380                 return -ENODEV;
1381         iob = qeth_wait_for_buffer(&card->write);
1382         memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1383         rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1384         return rc;
1385 }
1386 EXPORT_SYMBOL(qeth_osn_assist);
1387
1388 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1389                   int (*assist_cb)(struct net_device *, void *),
1390                   int (*data_cb)(struct sk_buff *))
1391 {
1392         struct qeth_card *card;
1393
1394         *dev = qeth_l2_netdev_by_devno(read_dev_no);
1395         if (*dev == NULL)
1396                 return -ENODEV;
1397         card = (*dev)->ml_priv;
1398         if (!card)
1399                 return -ENODEV;
1400         QETH_CARD_TEXT(card, 2, "osnreg");
1401         if ((assist_cb == NULL) || (data_cb == NULL))
1402                 return -EINVAL;
1403         card->osn_info.assist_cb = assist_cb;
1404         card->osn_info.data_cb = data_cb;
1405         return 0;
1406 }
1407 EXPORT_SYMBOL(qeth_osn_register);
1408
1409 void qeth_osn_deregister(struct net_device *dev)
1410 {
1411         struct qeth_card *card;
1412
1413         if (!dev)
1414                 return;
1415         card = dev->ml_priv;
1416         if (!card)
1417                 return;
1418         QETH_CARD_TEXT(card, 2, "osndereg");
1419         card->osn_info.assist_cb = NULL;
1420         card->osn_info.data_cb = NULL;
1421         return;
1422 }
1423 EXPORT_SYMBOL(qeth_osn_deregister);
1424
1425 /* SETBRIDGEPORT support, async notifications */
1426
1427 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1428
1429 /**
1430  * qeth_bridge_emit_host_event() - bridgeport address change notification
1431  * @card:  qeth_card structure pointer, for udev events.
1432  * @evtype:  "normal" register/unregister, or abort, or reset. For abort
1433  *            and reset token and addr_lnid are unused and may be NULL.
1434  * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
1435  *                        object, 0 - addition of an object.
1436  *                        0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1437  * @token: "network token" structure identifying physical address of the port.
1438  * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1439  *
1440  * This function is called when registrations and deregistrations are
1441  * reported by the hardware, and also when notifications are enabled -
1442  * for all currently registered addresses.
1443  */
1444 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1445         enum qeth_an_event_type evtype,
1446         u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1447 {
1448         char str[7][32];
1449         char *env[8];
1450         int i = 0;
1451
1452         switch (evtype) {
1453         case anev_reg_unreg:
1454                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1455                                 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1456                                 ? "deregister" : "register");
1457                 env[i] = str[i]; i++;
1458                 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1459                         snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1460                                 addr_lnid->lnid);
1461                         env[i] = str[i]; i++;
1462                 }
1463                 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1464                         snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1465                                 addr_lnid->mac);
1466                         env[i] = str[i]; i++;
1467                 }
1468                 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1469                         token->cssid, token->ssid, token->devnum);
1470                 env[i] = str[i]; i++;
1471                 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1472                 env[i] = str[i]; i++;
1473                 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1474                                 token->chpid);
1475                 env[i] = str[i]; i++;
1476                 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1477                 env[i] = str[i]; i++;
1478                 break;
1479         case anev_abort:
1480                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1481                 env[i] = str[i]; i++;
1482                 break;
1483         case anev_reset:
1484                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1485                 env[i] = str[i]; i++;
1486                 break;
1487         }
1488         env[i] = NULL;
1489         kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1490 }
1491
1492 struct qeth_bridge_state_data {
1493         struct work_struct worker;
1494         struct qeth_card *card;
1495         struct qeth_sbp_state_change qports;
1496 };
1497
1498 static void qeth_bridge_state_change_worker(struct work_struct *work)
1499 {
1500         struct qeth_bridge_state_data *data =
1501                 container_of(work, struct qeth_bridge_state_data, worker);
1502         /* We are only interested in the first entry - local port */
1503         struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1504         char env_locrem[32];
1505         char env_role[32];
1506         char env_state[32];
1507         char *env[] = {
1508                 env_locrem,
1509                 env_role,
1510                 env_state,
1511                 NULL
1512         };
1513
1514         /* Role should not change by itself, but if it did, */
1515         /* information from the hardware is authoritative.  */
1516         mutex_lock(&data->card->conf_mutex);
1517         data->card->options.sbp.role = entry->role;
1518         mutex_unlock(&data->card->conf_mutex);
1519
1520         snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1521         snprintf(env_role, sizeof(env_role), "ROLE=%s",
1522                 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1523                 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1524                 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1525                 "<INVALID>");
1526         snprintf(env_state, sizeof(env_state), "STATE=%s",
1527                 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1528                 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1529                 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1530                 "<INVALID>");
1531         kobject_uevent_env(&data->card->gdev->dev.kobj,
1532                                 KOBJ_CHANGE, env);
1533         kfree(data);
1534 }
1535
1536 static void qeth_bridge_state_change(struct qeth_card *card,
1537                                         struct qeth_ipa_cmd *cmd)
1538 {
1539         struct qeth_sbp_state_change *qports =
1540                  &cmd->data.sbp.data.state_change;
1541         struct qeth_bridge_state_data *data;
1542         int extrasize;
1543
1544         QETH_CARD_TEXT(card, 2, "brstchng");
1545         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1546                 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1547                 return;
1548         }
1549         extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1550         data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1551                 GFP_ATOMIC);
1552         if (!data) {
1553                 QETH_CARD_TEXT(card, 2, "BPSalloc");
1554                 return;
1555         }
1556         INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1557         data->card = card;
1558         memcpy(&data->qports, qports,
1559                         sizeof(struct qeth_sbp_state_change) + extrasize);
1560         queue_work(qeth_wq, &data->worker);
1561 }
1562
1563 struct qeth_bridge_host_data {
1564         struct work_struct worker;
1565         struct qeth_card *card;
1566         struct qeth_ipacmd_addr_change hostevs;
1567 };
1568
1569 static void qeth_bridge_host_event_worker(struct work_struct *work)
1570 {
1571         struct qeth_bridge_host_data *data =
1572                 container_of(work, struct qeth_bridge_host_data, worker);
1573         int i;
1574
1575         if (data->hostevs.lost_event_mask) {
1576                 dev_info(&data->card->gdev->dev,
1577 "Address notification from the Bridge Port stopped %s (%s)\n",
1578                         data->card->dev->name,
1579                         (data->hostevs.lost_event_mask == 0x01)
1580                         ? "Overflow"
1581                         : (data->hostevs.lost_event_mask == 0x02)
1582                         ? "Bridge port state change"
1583                         : "Unknown reason");
1584                 mutex_lock(&data->card->conf_mutex);
1585                 data->card->options.sbp.hostnotification = 0;
1586                 mutex_unlock(&data->card->conf_mutex);
1587                 qeth_bridge_emit_host_event(data->card, anev_abort,
1588                         0, NULL, NULL);
1589         } else
1590                 for (i = 0; i < data->hostevs.num_entries; i++) {
1591                         struct qeth_ipacmd_addr_change_entry *entry =
1592                                         &data->hostevs.entry[i];
1593                         qeth_bridge_emit_host_event(data->card,
1594                                         anev_reg_unreg,
1595                                         entry->change_code,
1596                                         &entry->token, &entry->addr_lnid);
1597                 }
1598         kfree(data);
1599 }
1600
1601 static void qeth_bridge_host_event(struct qeth_card *card,
1602                                         struct qeth_ipa_cmd *cmd)
1603 {
1604         struct qeth_ipacmd_addr_change *hostevs =
1605                  &cmd->data.addrchange;
1606         struct qeth_bridge_host_data *data;
1607         int extrasize;
1608
1609         QETH_CARD_TEXT(card, 2, "brhostev");
1610         if (cmd->hdr.return_code != 0x0000) {
1611                 if (cmd->hdr.return_code == 0x0010) {
1612                         if (hostevs->lost_event_mask == 0x00)
1613                                 hostevs->lost_event_mask = 0xff;
1614                 } else {
1615                         QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1616                                 cmd->hdr.return_code);
1617                         return;
1618                 }
1619         }
1620         extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1621                                                 hostevs->num_entries;
1622         data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1623                 GFP_ATOMIC);
1624         if (!data) {
1625                 QETH_CARD_TEXT(card, 2, "BPHalloc");
1626                 return;
1627         }
1628         INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1629         data->card = card;
1630         memcpy(&data->hostevs, hostevs,
1631                         sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1632         queue_work(qeth_wq, &data->worker);
1633 }
1634
1635 /* SETBRIDGEPORT support; sending commands */
1636
1637 struct _qeth_sbp_cbctl {
1638         u16 ipa_rc;
1639         u16 cmd_rc;
1640         union {
1641                 u32 supported;
1642                 struct {
1643                         enum qeth_sbp_roles *role;
1644                         enum qeth_sbp_states *state;
1645                 } qports;
1646         } data;
1647 };
1648
1649 /**
1650  * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1651  * @card:                     qeth_card structure pointer, for debug messages.
1652  * @cbctl:                    state structure with hardware return codes.
1653  * @setcmd:                   IPA command code
1654  *
1655  * Returns negative errno-compatible error indication or 0 on success.
1656  */
1657 static int qeth_bridgeport_makerc(struct qeth_card *card,
1658         struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1659 {
1660         int rc;
1661         int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1662
1663         if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1664             (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1665                 switch (cbctl->cmd_rc) {
1666                 case IPA_RC_SUCCESS:
1667                         rc = 0;
1668                         break;
1669                 case IPA_RC_L2_UNSUPPORTED_CMD:
1670                 case IPA_RC_UNSUPPORTED_COMMAND:
1671                         rc = -EOPNOTSUPP;
1672                         break;
1673                 case IPA_RC_SBP_OSA_NOT_CONFIGURED:
1674                 case IPA_RC_SBP_IQD_NOT_CONFIGURED:
1675                         rc = -ENODEV; /* maybe not the best code here? */
1676                         dev_err(&card->gdev->dev,
1677         "The device is not configured as a Bridge Port\n");
1678                         break;
1679                 case IPA_RC_SBP_OSA_OS_MISMATCH:
1680                 case IPA_RC_SBP_IQD_OS_MISMATCH:
1681                         rc = -EPERM;
1682                         dev_err(&card->gdev->dev,
1683         "A Bridge Port is already configured by a different operating system\n");
1684                         break;
1685                 case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY:
1686                 case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY:
1687                         switch (setcmd) {
1688                         case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1689                                 rc = -EEXIST;
1690                                 dev_err(&card->gdev->dev,
1691         "The LAN already has a primary Bridge Port\n");
1692                                 break;
1693                         case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1694                                 rc = -EBUSY;
1695                                 dev_err(&card->gdev->dev,
1696         "The device is already a primary Bridge Port\n");
1697                                 break;
1698                         default:
1699                                 rc = -EIO;
1700                         }
1701                         break;
1702                 case IPA_RC_SBP_OSA_CURRENT_SECOND:
1703                 case IPA_RC_SBP_IQD_CURRENT_SECOND:
1704                         rc = -EBUSY;
1705                         dev_err(&card->gdev->dev,
1706         "The device is already a secondary Bridge Port\n");
1707                         break;
1708                 case IPA_RC_SBP_OSA_LIMIT_SECOND:
1709                 case IPA_RC_SBP_IQD_LIMIT_SECOND:
1710                         rc = -EEXIST;
1711                         dev_err(&card->gdev->dev,
1712         "The LAN cannot have more secondary Bridge Ports\n");
1713                         break;
1714                 case IPA_RC_SBP_OSA_CURRENT_PRIMARY:
1715                 case IPA_RC_SBP_IQD_CURRENT_PRIMARY:
1716                         rc = -EBUSY;
1717                         dev_err(&card->gdev->dev,
1718         "The device is already a primary Bridge Port\n");
1719                         break;
1720                 case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN:
1721                 case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN:
1722                         rc = -EACCES;
1723                         dev_err(&card->gdev->dev,
1724         "The device is not authorized to be a Bridge Port\n");
1725                         break;
1726                 default:
1727                         rc = -EIO;
1728                 }
1729         else
1730                 switch (cbctl->ipa_rc) {
1731                 case IPA_RC_NOTSUPP:
1732                         rc = -EOPNOTSUPP;
1733                         break;
1734                 case IPA_RC_UNSUPPORTED_COMMAND:
1735                         rc = -EOPNOTSUPP;
1736                         break;
1737                 default:
1738                         rc = -EIO;
1739                 }
1740
1741         if (rc) {
1742                 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1743                 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1744         }
1745         return rc;
1746 }
1747
1748 static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
1749                                                   enum qeth_ipa_sbp_cmd sbp_cmd,
1750                                                   unsigned int cmd_length)
1751 {
1752         enum qeth_ipa_cmds ipa_cmd = (card->info.type == QETH_CARD_TYPE_IQD) ?
1753                                         IPA_CMD_SETBRIDGEPORT_IQD :
1754                                         IPA_CMD_SETBRIDGEPORT_OSA;
1755         struct qeth_cmd_buffer *iob;
1756         struct qeth_ipa_cmd *cmd;
1757
1758         iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0);
1759         if (!iob)
1760                 return iob;
1761         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1762         cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
1763                                       cmd_length;
1764         cmd->data.sbp.hdr.command_code = sbp_cmd;
1765         cmd->data.sbp.hdr.used_total = 1;
1766         cmd->data.sbp.hdr.seq_no = 1;
1767         return iob;
1768 }
1769
1770 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1771         struct qeth_reply *reply, unsigned long data)
1772 {
1773         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1774         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1775         QETH_CARD_TEXT(card, 2, "brqsupcb");
1776         cbctl->ipa_rc = cmd->hdr.return_code;
1777         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1778         if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1779                 cbctl->data.supported =
1780                         cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1781         } else {
1782                 cbctl->data.supported = 0;
1783         }
1784         return 0;
1785 }
1786
1787 /**
1788  * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1789  * @card:                            qeth_card structure pointer.
1790  *
1791  * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1792  * strucutre: card->options.sbp.supported_funcs.
1793  */
1794 static void qeth_bridgeport_query_support(struct qeth_card *card)
1795 {
1796         struct qeth_cmd_buffer *iob;
1797         struct _qeth_sbp_cbctl cbctl;
1798
1799         QETH_CARD_TEXT(card, 2, "brqsuppo");
1800         iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
1801                                  sizeof(struct qeth_sbp_query_cmds_supp));
1802         if (!iob)
1803                 return;
1804         if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1805                                                         (void *)&cbctl) ||
1806             qeth_bridgeport_makerc(card, &cbctl,
1807                                         IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1808                 /* non-zero makerc signifies failure, and produce messages */
1809                 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1810                 return;
1811         }
1812         card->options.sbp.supported_funcs = cbctl.data.supported;
1813 }
1814
1815 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1816         struct qeth_reply *reply, unsigned long data)
1817 {
1818         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1819         struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1820         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1821
1822         QETH_CARD_TEXT(card, 2, "brqprtcb");
1823         cbctl->ipa_rc = cmd->hdr.return_code;
1824         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1825         if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1826                 return 0;
1827         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1828                 cbctl->cmd_rc = 0xffff;
1829                 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1830                 return 0;
1831         }
1832         /* first entry contains the state of the local port */
1833         if (qports->num_entries > 0) {
1834                 if (cbctl->data.qports.role)
1835                         *cbctl->data.qports.role = qports->entry[0].role;
1836                 if (cbctl->data.qports.state)
1837                         *cbctl->data.qports.state = qports->entry[0].state;
1838         }
1839         return 0;
1840 }
1841
1842 /**
1843  * qeth_bridgeport_query_ports() - query local bridgeport status.
1844  * @card:                          qeth_card structure pointer.
1845  * @role:   Role of the port: 0-none, 1-primary, 2-secondary.
1846  * @state:  State of the port: 0-inactive, 1-standby, 2-active.
1847  *
1848  * Returns negative errno-compatible error indication or 0 on success.
1849  *
1850  * 'role' and 'state' are not updated in case of hardware operation failure.
1851  */
1852 int qeth_bridgeport_query_ports(struct qeth_card *card,
1853         enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1854 {
1855         int rc = 0;
1856         struct qeth_cmd_buffer *iob;
1857         struct _qeth_sbp_cbctl cbctl = {
1858                 .data = {
1859                         .qports = {
1860                                 .role = role,
1861                                 .state = state,
1862                         },
1863                 },
1864         };
1865
1866         QETH_CARD_TEXT(card, 2, "brqports");
1867         if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1868                 return -EOPNOTSUPP;
1869         iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0);
1870         if (!iob)
1871                 return -ENOMEM;
1872         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
1873                                 (void *)&cbctl);
1874         if (rc < 0)
1875                 return rc;
1876         return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
1877 }
1878 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
1879
1880 static int qeth_bridgeport_set_cb(struct qeth_card *card,
1881         struct qeth_reply *reply, unsigned long data)
1882 {
1883         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
1884         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1885         QETH_CARD_TEXT(card, 2, "brsetrcb");
1886         cbctl->ipa_rc = cmd->hdr.return_code;
1887         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1888         return 0;
1889 }
1890
1891 /**
1892  * qeth_bridgeport_setrole() - Assign primary role to the port.
1893  * @card:                      qeth_card structure pointer.
1894  * @role:                      Role to assign.
1895  *
1896  * Returns negative errno-compatible error indication or 0 on success.
1897  */
1898 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
1899 {
1900         int rc = 0;
1901         int cmdlength;
1902         struct qeth_cmd_buffer *iob;
1903         struct _qeth_sbp_cbctl cbctl;
1904         enum qeth_ipa_sbp_cmd setcmd;
1905
1906         QETH_CARD_TEXT(card, 2, "brsetrol");
1907         switch (role) {
1908         case QETH_SBP_ROLE_NONE:
1909                 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
1910                 cmdlength = sizeof(struct qeth_sbp_reset_role);
1911                 break;
1912         case QETH_SBP_ROLE_PRIMARY:
1913                 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
1914                 cmdlength = sizeof(struct qeth_sbp_set_primary);
1915                 break;
1916         case QETH_SBP_ROLE_SECONDARY:
1917                 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
1918                 cmdlength = sizeof(struct qeth_sbp_set_secondary);
1919                 break;
1920         default:
1921                 return -EINVAL;
1922         }
1923         if (!(card->options.sbp.supported_funcs & setcmd))
1924                 return -EOPNOTSUPP;
1925         iob = qeth_sbp_build_cmd(card, setcmd, cmdlength);
1926         if (!iob)
1927                 return -ENOMEM;
1928         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
1929                                 (void *)&cbctl);
1930         if (rc < 0)
1931                 return rc;
1932         return qeth_bridgeport_makerc(card, &cbctl, setcmd);
1933 }
1934
1935 /**
1936  * qeth_anset_makerc() - derive "traditional" error from hardware codes.
1937  * @card:                     qeth_card structure pointer, for debug messages.
1938  *
1939  * Returns negative errno-compatible error indication or 0 on success.
1940  */
1941 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
1942 {
1943         int rc;
1944
1945         if (pnso_rc == 0)
1946                 switch (response) {
1947                 case 0x0001:
1948                         rc = 0;
1949                         break;
1950                 case 0x0004:
1951                 case 0x0100:
1952                 case 0x0106:
1953                         rc = -EOPNOTSUPP;
1954                         dev_err(&card->gdev->dev,
1955                                 "Setting address notification failed\n");
1956                         break;
1957                 case 0x0107:
1958                         rc = -EAGAIN;
1959                         break;
1960                 default:
1961                         rc = -EIO;
1962                 }
1963         else
1964                 rc = -EIO;
1965
1966         if (rc) {
1967                 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
1968                 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
1969         }
1970         return rc;
1971 }
1972
1973 static void qeth_bridgeport_an_set_cb(void *priv,
1974                 enum qdio_brinfo_entry_type type, void *entry)
1975 {
1976         struct qeth_card *card = (struct qeth_card *)priv;
1977         struct qdio_brinfo_entry_l2 *l2entry;
1978         u8 code;
1979
1980         if (type != l2_addr_lnid) {
1981                 WARN_ON_ONCE(1);
1982                 return;
1983         }
1984
1985         l2entry = (struct qdio_brinfo_entry_l2 *)entry;
1986         code = IPA_ADDR_CHANGE_CODE_MACADDR;
1987         if (l2entry->addr_lnid.lnid)
1988                 code |= IPA_ADDR_CHANGE_CODE_VLANID;
1989         qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
1990                 (struct net_if_token *)&l2entry->nit,
1991                 (struct mac_addr_lnid *)&l2entry->addr_lnid);
1992 }
1993
1994 /**
1995  * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
1996  * @card:                     qeth_card structure pointer.
1997  * @enable:                   0 - disable, non-zero - enable notifications
1998  *
1999  * Returns negative errno-compatible error indication or 0 on success.
2000  *
2001  * On enable, emits a series of address notifications udev events for all
2002  * currently registered hosts.
2003  */
2004 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2005 {
2006         int rc;
2007         u16 response;
2008         struct ccw_device *ddev;
2009         struct subchannel_id schid;
2010
2011         if (!card)
2012                 return -EINVAL;
2013         if (!card->options.sbp.supported_funcs)
2014                 return -EOPNOTSUPP;
2015         ddev = CARD_DDEV(card);
2016         ccw_device_get_schid(ddev, &schid);
2017
2018         if (enable) {
2019                 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2020                 rc = qdio_pnso_brinfo(schid, 1, &response,
2021                         qeth_bridgeport_an_set_cb, card);
2022         } else
2023                 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2024         return qeth_anset_makerc(card, rc, response);
2025 }
2026 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2027
2028 module_init(qeth_l2_init);
2029 module_exit(qeth_l2_exit);
2030 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2031 MODULE_DESCRIPTION("qeth layer 2 discipline");
2032 MODULE_LICENSE("GPL");