drivers/s390/net/qeth_l2_main.c

   1 /*
   2  *    Copyright IBM Corp. 2007, 2009
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #define KMSG_COMPONENT "qeth"
  10 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  11
  12 #include <linux/module.h>
  13 #include <linux/moduleparam.h>
  14 #include <linux/string.h>
  15 #include <linux/errno.h>
  16 #include <linux/kernel.h>
  17 #include <linux/slab.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/mii.h>
  20 #include <linux/ip.h>
  21 #include <linux/list.h>
  22 #include <linux/hash.h>
  23 #include <linux/hashtable.h>
  24 #include <linux/string.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 int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
  31 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
  32                            enum qeth_ipa_cmds);
  33 static void qeth_l2_set_rx_mode(struct net_device *);
  34 static int qeth_l2_recover(void *);
  35 static void qeth_bridgeport_query_support(struct qeth_card *card);
  36 static void qeth_bridge_state_change(struct qeth_card *card,
  37                                         struct qeth_ipa_cmd *cmd);
  38 static void qeth_bridge_host_event(struct qeth_card *card,
  39                                         struct qeth_ipa_cmd *cmd);
  40
  41 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
  42 {
  43         struct qeth_card *card = dev->ml_priv;
  44         struct mii_ioctl_data *mii_data;
  45         int rc = 0;
  46
  47         if (!card)
  48                 return -ENODEV;
  49
  50         if (!qeth_card_hw_is_reachable(card))
  51                 return -ENODEV;
  52
  53         if (card->info.type == QETH_CARD_TYPE_OSN)
  54                 return -EPERM;
  55
  56         switch (cmd) {
  57         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
  58                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
  59                 break;
  60         case SIOC_QETH_GET_CARD_TYPE:
  61                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
  62                      card->info.type == QETH_CARD_TYPE_OSM ||
  63                      card->info.type == QETH_CARD_TYPE_OSX) &&
  64                     !card->info.guestlan)
  65                         return 1;
  66                 return 0;
  67                 break;
  68         case SIOCGMIIPHY:
  69                 mii_data = if_mii(rq);
  70                 mii_data->phy_id = 0;
  71                 break;
  72         case SIOCGMIIREG:
  73                 mii_data = if_mii(rq);
  74                 if (mii_data->phy_id != 0)
  75                         rc = -EINVAL;
  76                 else
  77                         mii_data->val_out = qeth_mdio_read(dev,
  78                                 mii_data->phy_id, mii_data->reg_num);
  79                 break;
  80         case SIOC_QETH_QUERY_OAT:
  81                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
  82                 break;
  83         default:
  84                 rc = -EOPNOTSUPP;
  85         }
  86         if (rc)
  87                 QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
  88         return rc;
  89 }
  90
  91 static int qeth_l2_verify_dev(struct net_device *dev)
  92 {
  93         struct qeth_card *card;
  94         unsigned long flags;
  95         int rc = 0;
  96
  97         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
  98         list_for_each_entry(card, &qeth_core_card_list.list, list) {
  99                 if (card->dev == dev) {
 100                         rc = QETH_REAL_CARD;
 101                         break;
 102                 }
 103         }
 104         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
 105
 106         return rc;
 107 }
 108
 109 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
 110 {
 111         struct qeth_card *card;
 112         struct net_device *ndev;
 113         __u16 temp_dev_no;
 114         unsigned long flags;
 115         struct ccw_dev_id read_devid;
 116
 117         ndev = NULL;
 118         memcpy(&temp_dev_no, read_dev_no, 2);
 119         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
 120         list_for_each_entry(card, &qeth_core_card_list.list, list) {
 121                 ccw_device_get_id(CARD_RDEV(card), &read_devid);
 122                 if (read_devid.devno == temp_dev_no) {
 123                         ndev = card->dev;
 124                         break;
 125                 }
 126         }
 127         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
 128         return ndev;
 129 }
 130
 131 static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
 132 {
 133         int rc;
 134
 135         if (retcode)
 136                 QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
 137         switch (retcode) {
 138         case IPA_RC_SUCCESS:
 139                 rc = 0;
 140                 break;
 141         case IPA_RC_L2_UNSUPPORTED_CMD:
 142                 rc = -EOPNOTSUPP;
 143                 break;
 144         case IPA_RC_L2_ADDR_TABLE_FULL:
 145                 rc = -ENOSPC;
 146                 break;
 147         case IPA_RC_L2_DUP_MAC:
 148         case IPA_RC_L2_DUP_LAYER3_MAC:
 149                 rc = -EEXIST;
 150                 break;
 151         case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
 152         case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
 153                 rc = -EPERM;
 154                 break;
 155         case IPA_RC_L2_MAC_NOT_FOUND:
 156                 rc = -ENOENT;
 157                 break;
 158         case -ENOMEM:
 159                 rc = -ENOMEM;
 160                 break;
 161         default:
 162                 rc = -EIO;
 163                 break;
 164         }
 165         return rc;
 166 }
 167
 168 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
 169 {
 170         int rc;
 171
 172         QETH_CARD_TEXT(card, 2, "L2Sgmac");
 173         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 174                                         IPA_CMD_SETGMAC));
 175         if (rc == -EEXIST)
 176                 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
 177                         mac, QETH_CARD_IFNAME(card));
 178         else if (rc)
 179                 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
 180                         mac, QETH_CARD_IFNAME(card), rc);
 181         return rc;
 182 }
 183
 184 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
 185 {
 186         int rc;
 187
 188         QETH_CARD_TEXT(card, 2, "L2Dgmac");
 189         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 190                                         IPA_CMD_DELGMAC));
 191         if (rc)
 192                 QETH_DBF_MESSAGE(2,
 193                         "Could not delete group MAC %pM on %s: %d\n",
 194                         mac, QETH_CARD_IFNAME(card), rc);
 195         return rc;
 196 }
 197
 198 static inline u32 qeth_l2_mac_hash(const u8 *addr)
 199 {
 200         return get_unaligned((u32 *)(&addr[2]));
 201 }
 202
 203 static int qeth_l2_write_mac(struct qeth_card *card, struct qeth_mac *mac)
 204 {
 205
 206         int rc;
 207
 208         if (mac->is_uc) {
 209                 rc = qeth_setdel_makerc(card,
 210                                 qeth_l2_send_setdelmac(card, mac->mac_addr,
 211                                                 IPA_CMD_SETVMAC));
 212         } else {
 213                 rc = qeth_setdel_makerc(card,
 214                                 qeth_l2_send_setgroupmac(card, mac->mac_addr));
 215         }
 216         return rc;
 217 }
 218
 219 static void qeth_l2_del_all_macs(struct qeth_card *card, int del)
 220 {
 221         struct qeth_mac *mac;
 222         struct hlist_node *tmp;
 223         int i;
 224
 225         spin_lock_bh(&card->mclock);
 226         hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
 227                 if (del) {
 228                         if (mac->is_uc)
 229                                 qeth_l2_send_setdelmac(card, mac->mac_addr,
 230                                                 IPA_CMD_DELVMAC);
 231                         else
 232                                 qeth_l2_send_delgroupmac(card, mac->mac_addr);
 233                 }
 234                 hash_del(&mac->hnode);
 235                 kfree(mac);
 236         }
 237         spin_unlock_bh(&card->mclock);
 238 }
 239
 240 static inline int qeth_l2_get_cast_type(struct qeth_card *card,
 241                         struct sk_buff *skb)
 242 {
 243         if (card->info.type == QETH_CARD_TYPE_OSN)
 244                 return RTN_UNSPEC;
 245         if (is_broadcast_ether_addr(skb->data))
 246                 return RTN_BROADCAST;
 247         if (is_multicast_ether_addr(skb->data))
 248                 return RTN_MULTICAST;
 249         return RTN_UNSPEC;
 250 }
 251
 252 static inline void qeth_l2_hdr_csum(struct qeth_card *card,
 253                                     struct qeth_hdr *hdr, struct sk_buff *skb)
 254 {
 255         struct iphdr *iph = ip_hdr(skb);
 256
 257         /* tcph->check contains already the pseudo hdr checksum
 258          * so just set the header flags
 259          */
 260         if (iph->protocol == IPPROTO_UDP)
 261                 hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_UDP;
 262         hdr->hdr.l2.flags[1] |= QETH_HDR_EXT_CSUM_TRANSP_REQ |
 263                 QETH_HDR_EXT_CSUM_HDR_REQ;
 264         iph->check = 0;
 265         if (card->options.performance_stats)
 266                 card->perf_stats.tx_csum++;
 267 }
 268
 269 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
 270                         struct sk_buff *skb, int cast_type)
 271 {
 272         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
 273
 274         memset(hdr, 0, sizeof(struct qeth_hdr));
 275         hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
 276
 277         /* set byte byte 3 to casting flags */
 278         if (cast_type == RTN_MULTICAST)
 279                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 280         else if (cast_type == RTN_BROADCAST)
 281                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
 282         else
 283                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 284
 285         hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
 286         /* VSWITCH relies on the VLAN
 287          * information to be present in
 288          * the QDIO header */
 289         if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
 290                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
 291                 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
 292         }
 293 }
 294
 295 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
 296                         struct qeth_reply *reply, unsigned long data)
 297 {
 298         struct qeth_ipa_cmd *cmd;
 299
 300         QETH_CARD_TEXT(card, 2, "L2sdvcb");
 301         cmd = (struct qeth_ipa_cmd *) data;
 302         if (cmd->hdr.return_code) {
 303                 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
 304                           "Continuing\n", cmd->data.setdelvlan.vlan_id,
 305                           QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 306                 QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
 307                 QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
 308         }
 309         return 0;
 310 }
 311
 312 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
 313                                 enum qeth_ipa_cmds ipacmd)
 314 {
 315         struct qeth_ipa_cmd *cmd;
 316         struct qeth_cmd_buffer *iob;
 317
 318         QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
 319         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 320         if (!iob)
 321                 return -ENOMEM;
 322         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 323         cmd->data.setdelvlan.vlan_id = i;
 324         return qeth_send_ipa_cmd(card, iob,
 325                                  qeth_l2_send_setdelvlan_cb, NULL);
 326 }
 327
 328 static void qeth_l2_process_vlans(struct qeth_card *card)
 329 {
 330         struct qeth_vlan_vid *id;
 331         QETH_CARD_TEXT(card, 3, "L2prcvln");
 332         spin_lock_bh(&card->vlanlock);
 333         list_for_each_entry(id, &card->vid_list, list) {
 334                 qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
 335         }
 336         spin_unlock_bh(&card->vlanlock);
 337 }
 338
 339 static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
 340                                    __be16 proto, u16 vid)
 341 {
 342         struct qeth_card *card = dev->ml_priv;
 343         struct qeth_vlan_vid *id;
 344         int rc;
 345
 346         QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
 347         if (!vid)
 348                 return 0;
 349         if (card->info.type == QETH_CARD_TYPE_OSM) {
 350                 QETH_CARD_TEXT(card, 3, "aidOSM");
 351                 return 0;
 352         }
 353         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 354                 QETH_CARD_TEXT(card, 3, "aidREC");
 355                 return 0;
 356         }
 357         id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
 358         if (id) {
 359                 id->vid = vid;
 360                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
 361                 if (rc) {
 362                         kfree(id);
 363                         return rc;
 364                 }
 365                 spin_lock_bh(&card->vlanlock);
 366                 list_add_tail(&id->list, &card->vid_list);
 367                 spin_unlock_bh(&card->vlanlock);
 368         } else {
 369                 return -ENOMEM;
 370         }
 371         return 0;
 372 }
 373
 374 static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
 375                                     __be16 proto, u16 vid)
 376 {
 377         struct qeth_vlan_vid *id, *tmpid = NULL;
 378         struct qeth_card *card = dev->ml_priv;
 379         int rc = 0;
 380
 381         QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
 382         if (card->info.type == QETH_CARD_TYPE_OSM) {
 383                 QETH_CARD_TEXT(card, 3, "kidOSM");
 384                 return 0;
 385         }
 386         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 387                 QETH_CARD_TEXT(card, 3, "kidREC");
 388                 return 0;
 389         }
 390         spin_lock_bh(&card->vlanlock);
 391         list_for_each_entry(id, &card->vid_list, list) {
 392                 if (id->vid == vid) {
 393                         list_del(&id->list);
 394                         tmpid = id;
 395                         break;
 396                 }
 397         }
 398         spin_unlock_bh(&card->vlanlock);
 399         if (tmpid) {
 400                 rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
 401                 kfree(tmpid);
 402         }
 403         qeth_l2_set_rx_mode(card->dev);
 404         return rc;
 405 }
 406
 407 static void qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
 408 {
 409         QETH_DBF_TEXT(SETUP , 2, "stopcard");
 410         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 411
 412         qeth_set_allowed_threads(card, 0, 1);
 413         if (card->read.state == CH_STATE_UP &&
 414             card->write.state == CH_STATE_UP &&
 415             (card->state == CARD_STATE_UP)) {
 416                 if (recovery_mode &&
 417                     card->info.type != QETH_CARD_TYPE_OSN) {
 418                         qeth_l2_stop(card->dev);
 419                 } else {
 420                         rtnl_lock();
 421                         dev_close(card->dev);
 422                         rtnl_unlock();
 423                 }
 424                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 425                 card->state = CARD_STATE_SOFTSETUP;
 426         }
 427         if (card->state == CARD_STATE_SOFTSETUP) {
 428                 qeth_l2_del_all_macs(card, 0);
 429                 qeth_clear_ipacmd_list(card);
 430                 card->state = CARD_STATE_HARDSETUP;
 431         }
 432         if (card->state == CARD_STATE_HARDSETUP) {
 433                 qeth_qdio_clear_card(card, 0);
 434                 qeth_clear_qdio_buffers(card);
 435                 qeth_clear_working_pool_list(card);
 436                 card->state = CARD_STATE_DOWN;
 437         }
 438         if (card->state == CARD_STATE_DOWN) {
 439                 qeth_clear_cmd_buffers(&card->read);
 440                 qeth_clear_cmd_buffers(&card->write);
 441         }
 442 }
 443
 444 static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
 445                                 int budget, int *done)
 446 {
 447         int work_done = 0;
 448         struct sk_buff *skb;
 449         struct qeth_hdr *hdr;
 450         unsigned int len;
 451
 452         *done = 0;
 453         WARN_ON_ONCE(!budget);
 454         while (budget) {
 455                 skb = qeth_core_get_next_skb(card,
 456                         &card->qdio.in_q->bufs[card->rx.b_index],
 457                         &card->rx.b_element, &card->rx.e_offset, &hdr);
 458                 if (!skb) {
 459                         *done = 1;
 460                         break;
 461                 }
 462                 skb->dev = card->dev;
 463                 switch (hdr->hdr.l2.id) {
 464                 case QETH_HEADER_TYPE_LAYER2:
 465                         skb->pkt_type = PACKET_HOST;
 466                         skb->protocol = eth_type_trans(skb, skb->dev);
 467                         if ((card->dev->features & NETIF_F_RXCSUM)
 468                            && ((hdr->hdr.l2.flags[1] &
 469                                 (QETH_HDR_EXT_CSUM_HDR_REQ |
 470                                    QETH_HDR_EXT_CSUM_TRANSP_REQ)) ==
 471                                 (QETH_HDR_EXT_CSUM_HDR_REQ |
 472                                    QETH_HDR_EXT_CSUM_TRANSP_REQ)))
 473                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 474                         else
 475                                 skb->ip_summed = CHECKSUM_NONE;
 476                         if (skb->protocol == htons(ETH_P_802_2))
 477                                 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
 478                         len = skb->len;
 479                         napi_gro_receive(&card->napi, skb);
 480                         break;
 481                 case QETH_HEADER_TYPE_OSN:
 482                         if (card->info.type == QETH_CARD_TYPE_OSN) {
 483                                 skb_push(skb, sizeof(struct qeth_hdr));
 484                                 skb_copy_to_linear_data(skb, hdr,
 485                                                 sizeof(struct qeth_hdr));
 486                                 len = skb->len;
 487                                 card->osn_info.data_cb(skb);
 488                                 break;
 489                         }
 490                         /* else unknown */
 491                 default:
 492                         dev_kfree_skb_any(skb);
 493                         QETH_CARD_TEXT(card, 3, "inbunkno");
 494                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
 495                         continue;
 496                 }
 497                 work_done++;
 498                 budget--;
 499                 card->stats.rx_packets++;
 500                 card->stats.rx_bytes += len;
 501         }
 502         return work_done;
 503 }
 504
 505 static int qeth_l2_poll(struct napi_struct *napi, int budget)
 506 {
 507         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
 508         int work_done = 0;
 509         struct qeth_qdio_buffer *buffer;
 510         int done;
 511         int new_budget = budget;
 512
 513         if (card->options.performance_stats) {
 514                 card->perf_stats.inbound_cnt++;
 515                 card->perf_stats.inbound_start_time = qeth_get_micros();
 516         }
 517
 518         while (1) {
 519                 if (!card->rx.b_count) {
 520                         card->rx.qdio_err = 0;
 521                         card->rx.b_count = qdio_get_next_buffers(
 522                                 card->data.ccwdev, 0, &card->rx.b_index,
 523                                 &card->rx.qdio_err);
 524                         if (card->rx.b_count <= 0) {
 525                                 card->rx.b_count = 0;
 526                                 break;
 527                         }
 528                         card->rx.b_element =
 529                                 &card->qdio.in_q->bufs[card->rx.b_index]
 530                                 .buffer->element[0];
 531                         card->rx.e_offset = 0;
 532                 }
 533
 534                 while (card->rx.b_count) {
 535                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
 536                         if (!(card->rx.qdio_err &&
 537                             qeth_check_qdio_errors(card, buffer->buffer,
 538                             card->rx.qdio_err, "qinerr")))
 539                                 work_done += qeth_l2_process_inbound_buffer(
 540                                         card, new_budget, &done);
 541                         else
 542                                 done = 1;
 543
 544                         if (done) {
 545                                 if (card->options.performance_stats)
 546                                         card->perf_stats.bufs_rec++;
 547                                 qeth_put_buffer_pool_entry(card,
 548                                         buffer->pool_entry);
 549                                 qeth_queue_input_buffer(card, card->rx.b_index);
 550                                 card->rx.b_count--;
 551                                 if (card->rx.b_count) {
 552                                         card->rx.b_index =
 553                                                 (card->rx.b_index + 1) %
 554                                                 QDIO_MAX_BUFFERS_PER_Q;
 555                                         card->rx.b_element =
 556                                                 &card->qdio.in_q
 557                                                 ->bufs[card->rx.b_index]
 558                                                 .buffer->element[0];
 559                                         card->rx.e_offset = 0;
 560                                 }
 561                         }
 562
 563                         if (work_done >= budget)
 564                                 goto out;
 565                         else
 566                                 new_budget = budget - work_done;
 567                 }
 568         }
 569
 570         napi_complete(napi);
 571         if (qdio_start_irq(card->data.ccwdev, 0))
 572                 napi_schedule(&card->napi);
 573 out:
 574         if (card->options.performance_stats)
 575                 card->perf_stats.inbound_time += qeth_get_micros() -
 576                         card->perf_stats.inbound_start_time;
 577         return work_done;
 578 }
 579
 580 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
 581                            enum qeth_ipa_cmds ipacmd)
 582 {
 583         struct qeth_ipa_cmd *cmd;
 584         struct qeth_cmd_buffer *iob;
 585
 586         QETH_CARD_TEXT(card, 2, "L2sdmac");
 587         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 588         if (!iob)
 589                 return -ENOMEM;
 590         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 591         cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
 592         memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
 593         return qeth_send_ipa_cmd(card, iob, NULL, NULL);
 594 }
 595
 596 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
 597 {
 598         int rc;
 599
 600         QETH_CARD_TEXT(card, 2, "L2Setmac");
 601         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 602                                         IPA_CMD_SETVMAC));
 603         if (rc == 0) {
 604                 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 605                 memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
 606                 dev_info(&card->gdev->dev,
 607                         "MAC address %pM successfully registered on device %s\n",
 608                         card->dev->dev_addr, card->dev->name);
 609         } else {
 610                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 611                 switch (rc) {
 612                 case -EEXIST:
 613                         dev_warn(&card->gdev->dev,
 614                                 "MAC address %pM already exists\n", mac);
 615                         break;
 616                 case -EPERM:
 617                         dev_warn(&card->gdev->dev,
 618                                 "MAC address %pM is not authorized\n", mac);
 619                         break;
 620                 }
 621         }
 622         return rc;
 623 }
 624
 625 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
 626 {
 627         int rc;
 628
 629         QETH_CARD_TEXT(card, 2, "L2Delmac");
 630         if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
 631                 return 0;
 632         rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
 633                                         IPA_CMD_DELVMAC));
 634         if (rc == 0)
 635                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 636         return rc;
 637 }
 638
 639 static int qeth_l2_request_initial_mac(struct qeth_card *card)
 640 {
 641         int rc = 0;
 642         char vendor_pre[] = {0x02, 0x00, 0x00};
 643
 644         QETH_DBF_TEXT(SETUP, 2, "doL2init");
 645         QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
 646
 647         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
 648                 rc = qeth_query_setadapterparms(card);
 649                 if (rc) {
 650                         QETH_DBF_MESSAGE(2, "could not query adapter "
 651                                 "parameters on device %s: x%x\n",
 652                                 CARD_BUS_ID(card), rc);
 653                 }
 654         }
 655
 656         if (card->info.type == QETH_CARD_TYPE_IQD ||
 657             card->info.type == QETH_CARD_TYPE_OSM ||
 658             card->info.type == QETH_CARD_TYPE_OSX ||
 659             card->info.guestlan) {
 660                 rc = qeth_setadpparms_change_macaddr(card);
 661                 if (rc) {
 662                         QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
 663                                 "device %s: x%x\n", CARD_BUS_ID(card), rc);
 664                         QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
 665                         return rc;
 666                 }
 667                 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
 668         } else {
 669                 eth_random_addr(card->dev->dev_addr);
 670                 memcpy(card->dev->dev_addr, vendor_pre, 3);
 671         }
 672         return 0;
 673 }
 674
 675 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
 676 {
 677         struct sockaddr *addr = p;
 678         struct qeth_card *card = dev->ml_priv;
 679         int rc = 0;
 680
 681         QETH_CARD_TEXT(card, 3, "setmac");
 682
 683         if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
 684                 QETH_CARD_TEXT(card, 3, "setmcINV");
 685                 return -EOPNOTSUPP;
 686         }
 687
 688         if (card->info.type == QETH_CARD_TYPE_OSN ||
 689             card->info.type == QETH_CARD_TYPE_OSM ||
 690             card->info.type == QETH_CARD_TYPE_OSX) {
 691                 QETH_CARD_TEXT(card, 3, "setmcTYP");
 692                 return -EOPNOTSUPP;
 693         }
 694         QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
 695         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 696                 QETH_CARD_TEXT(card, 3, "setmcREC");
 697                 return -ERESTARTSYS;
 698         }
 699         rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
 700         if (!rc || (rc == -ENOENT))
 701                 rc = qeth_l2_send_setmac(card, addr->sa_data);
 702         return rc ? -EINVAL : 0;
 703 }
 704
 705 static void qeth_promisc_to_bridge(struct qeth_card *card)
 706 {
 707         struct net_device *dev = card->dev;
 708         enum qeth_ipa_promisc_modes promisc_mode;
 709         int role;
 710         int rc;
 711
 712         QETH_CARD_TEXT(card, 3, "pmisc2br");
 713
 714         if (!card->options.sbp.reflect_promisc)
 715                 return;
 716         promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
 717                                                 : SET_PROMISC_MODE_OFF;
 718         if (promisc_mode == card->info.promisc_mode)
 719                 return;
 720
 721         if (promisc_mode == SET_PROMISC_MODE_ON) {
 722                 if (card->options.sbp.reflect_promisc_primary)
 723                         role = QETH_SBP_ROLE_PRIMARY;
 724                 else
 725                         role = QETH_SBP_ROLE_SECONDARY;
 726         } else
 727                 role = QETH_SBP_ROLE_NONE;
 728
 729         rc = qeth_bridgeport_setrole(card, role);
 730         QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x",
 731                         (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
 732         if (!rc) {
 733                 card->options.sbp.role = role;
 734                 card->info.promisc_mode = promisc_mode;
 735         }
 736
 737 }
 738 /* New MAC address is added to the hash table and marked to be written on card
 739  * only if there is not in the hash table storage already
 740  *
 741 */
 742 static  void
 743 qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha, u8 is_uc)
 744 {
 745         struct qeth_mac *mac;
 746
 747         hash_for_each_possible(card->mac_htable, mac, hnode,
 748                         qeth_l2_mac_hash(ha->addr)) {
 749                 if (is_uc == mac->is_uc &&
 750                     !memcmp(ha->addr, mac->mac_addr, OSA_ADDR_LEN)) {
 751                         mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
 752                         return;
 753                 }
 754         }
 755
 756         mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC);
 757
 758         if (!mac)
 759                 return;
 760
 761         memcpy(mac->mac_addr, ha->addr, OSA_ADDR_LEN);
 762         mac->is_uc = is_uc;
 763         mac->disp_flag = QETH_DISP_ADDR_ADD;
 764
 765         hash_add(card->mac_htable, &mac->hnode,
 766                         qeth_l2_mac_hash(mac->mac_addr));
 767
 768 }
 769
 770 static void qeth_l2_set_rx_mode(struct net_device *dev)
 771 {
 772         struct qeth_card *card = dev->ml_priv;
 773         struct netdev_hw_addr *ha;
 774         struct qeth_mac *mac;
 775         struct hlist_node *tmp;
 776         int i;
 777         int rc;
 778
 779         if (card->info.type == QETH_CARD_TYPE_OSN)
 780                 return;
 781
 782         QETH_CARD_TEXT(card, 3, "setmulti");
 783         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
 784             (card->state != CARD_STATE_UP))
 785                 return;
 786
 787         spin_lock_bh(&card->mclock);
 788
 789         netdev_for_each_mc_addr(ha, dev)
 790                 qeth_l2_add_mac(card, ha, 0);
 791
 792         netdev_for_each_uc_addr(ha, dev)
 793                 qeth_l2_add_mac(card, ha, 1);
 794
 795         hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) {
 796                 if (mac->disp_flag == QETH_DISP_ADDR_DELETE) {
 797                         if (!mac->is_uc)
 798                                 rc = qeth_l2_send_delgroupmac(card,
 799                                                 mac->mac_addr);
 800                         else {
 801                                 rc = qeth_l2_send_setdelmac(card, mac->mac_addr,
 802                                                 IPA_CMD_DELVMAC);
 803                         }
 804
 805                         hash_del(&mac->hnode);
 806                         kfree(mac);
 807
 808                 } else if (mac->disp_flag == QETH_DISP_ADDR_ADD) {
 809                         rc = qeth_l2_write_mac(card, mac);
 810                         if (rc) {
 811                                 hash_del(&mac->hnode);
 812                                 kfree(mac);
 813                         } else
 814                                 mac->disp_flag = QETH_DISP_ADDR_DELETE;
 815                 } else
 816                         mac->disp_flag = QETH_DISP_ADDR_DELETE;
 817         }
 818
 819         spin_unlock_bh(&card->mclock);
 820
 821         if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 822                 qeth_setadp_promisc_mode(card);
 823         else
 824                 qeth_promisc_to_bridge(card);
 825 }
 826
 827 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 828 {
 829         int rc;
 830         struct qeth_hdr *hdr = NULL;
 831         int elements = 0;
 832         struct qeth_card *card = dev->ml_priv;
 833         struct sk_buff *new_skb = skb;
 834         int cast_type = qeth_l2_get_cast_type(card, skb);
 835         struct qeth_qdio_out_q *queue;
 836         int tx_bytes = skb->len;
 837         int data_offset = -1;
 838         int elements_needed = 0;
 839         int hd_len = 0;
 840         int nr_frags;
 841
 842         if (card->qdio.do_prio_queueing || (cast_type &&
 843                                         card->info.is_multicast_different))
 844                 queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
 845                                         qeth_get_ip_version(skb), cast_type)];
 846         else
 847                 queue = card->qdio.out_qs[card->qdio.default_out_queue];
 848
 849         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
 850                 card->stats.tx_carrier_errors++;
 851                 goto tx_drop;
 852         }
 853
 854         if ((card->info.type == QETH_CARD_TYPE_OSN) &&
 855             (skb->protocol == htons(ETH_P_IPV6)))
 856                 goto tx_drop;
 857
 858         if (card->options.performance_stats) {
 859                 card->perf_stats.outbound_cnt++;
 860                 card->perf_stats.outbound_start_time = qeth_get_micros();
 861         }
 862         netif_stop_queue(dev);
 863
 864         /* fix hardware limitation: as long as we do not have sbal
 865          * chaining we can not send long frag lists
 866          */
 867         if ((card->info.type != QETH_CARD_TYPE_IQD) &&
 868             !qeth_get_elements_no(card, new_skb, 0)) {
 869                 int lin_rc = skb_linearize(new_skb);
 870
 871                 if (card->options.performance_stats) {
 872                         if (lin_rc)
 873                                 card->perf_stats.tx_linfail++;
 874                         else
 875                                 card->perf_stats.tx_lin++;
 876                 }
 877                 if (lin_rc)
 878                         goto tx_drop;
 879         }
 880
 881         if (card->info.type == QETH_CARD_TYPE_OSN)
 882                 hdr = (struct qeth_hdr *)skb->data;
 883         else {
 884                 if (card->info.type == QETH_CARD_TYPE_IQD) {
 885                         new_skb = skb;
 886                         data_offset = ETH_HLEN;
 887                         hd_len = ETH_HLEN;
 888                         hdr = kmem_cache_alloc(qeth_core_header_cache,
 889                                                 GFP_ATOMIC);
 890                         if (!hdr)
 891                                 goto tx_drop;
 892                         elements_needed++;
 893                         skb_reset_mac_header(new_skb);
 894                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 895                         hdr->hdr.l2.pkt_length = new_skb->len;
 896                         memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
 897                                 skb_mac_header(new_skb), ETH_HLEN);
 898                 } else {
 899                         /* create a clone with writeable headroom */
 900                         new_skb = skb_realloc_headroom(skb,
 901                                                 sizeof(struct qeth_hdr));
 902                         if (!new_skb)
 903                                 goto tx_drop;
 904                         hdr = (struct qeth_hdr *)skb_push(new_skb,
 905                                                 sizeof(struct qeth_hdr));
 906                         skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
 907                         qeth_l2_fill_header(card, hdr, new_skb, cast_type);
 908                         if (new_skb->ip_summed == CHECKSUM_PARTIAL)
 909                                 qeth_l2_hdr_csum(card, hdr, new_skb);
 910                 }
 911         }
 912
 913         elements = qeth_get_elements_no(card, new_skb, elements_needed);
 914         if (!elements) {
 915                 if (data_offset >= 0)
 916                         kmem_cache_free(qeth_core_header_cache, hdr);
 917                 goto tx_drop;
 918         }
 919
 920         if (card->info.type != QETH_CARD_TYPE_IQD) {
 921                 if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
 922                     sizeof(struct qeth_hdr_layer2)))
 923                         goto tx_drop;
 924                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
 925                                          elements);
 926         } else
 927                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
 928                                         elements, data_offset, hd_len);
 929         if (!rc) {
 930                 card->stats.tx_packets++;
 931                 card->stats.tx_bytes += tx_bytes;
 932                 if (card->options.performance_stats) {
 933                         nr_frags = skb_shinfo(new_skb)->nr_frags;
 934                         if (nr_frags) {
 935                                 card->perf_stats.sg_skbs_sent++;
 936                                 /* nr_frags + skb->data */
 937                                 card->perf_stats.sg_frags_sent += nr_frags + 1;
 938                         }
 939                 }
 940                 if (new_skb != skb)
 941                         dev_kfree_skb_any(skb);
 942                 rc = NETDEV_TX_OK;
 943         } else {
 944                 if (data_offset >= 0)
 945                         kmem_cache_free(qeth_core_header_cache, hdr);
 946
 947                 if (rc == -EBUSY) {
 948                         if (new_skb != skb)
 949                                 dev_kfree_skb_any(new_skb);
 950                         return NETDEV_TX_BUSY;
 951                 } else
 952                         goto tx_drop;
 953         }
 954
 955         netif_wake_queue(dev);
 956         if (card->options.performance_stats)
 957                 card->perf_stats.outbound_time += qeth_get_micros() -
 958                         card->perf_stats.outbound_start_time;
 959         return rc;
 960
 961 tx_drop:
 962         card->stats.tx_dropped++;
 963         card->stats.tx_errors++;
 964         if ((new_skb != skb) && new_skb)
 965                 dev_kfree_skb_any(new_skb);
 966         dev_kfree_skb_any(skb);
 967         netif_wake_queue(dev);
 968         return NETDEV_TX_OK;
 969 }
 970
 971 static int __qeth_l2_open(struct net_device *dev)
 972 {
 973         struct qeth_card *card = dev->ml_priv;
 974         int rc = 0;
 975
 976         QETH_CARD_TEXT(card, 4, "qethopen");
 977         if (card->state == CARD_STATE_UP)
 978                 return rc;
 979         if (card->state != CARD_STATE_SOFTSETUP)
 980                 return -ENODEV;
 981
 982         if ((card->info.type != QETH_CARD_TYPE_OSN) &&
 983              (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
 984                 QETH_CARD_TEXT(card, 4, "nomacadr");
 985                 return -EPERM;
 986         }
 987         card->data.state = CH_STATE_UP;
 988         card->state = CARD_STATE_UP;
 989         netif_start_queue(dev);
 990
 991         if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
 992                 napi_enable(&card->napi);
 993                 napi_schedule(&card->napi);
 994         } else
 995                 rc = -EIO;
 996         return rc;
 997 }
 998
 999 static int qeth_l2_open(struct net_device *dev)
1000 {
1001         struct qeth_card *card = dev->ml_priv;
1002
1003         QETH_CARD_TEXT(card, 5, "qethope_");
1004         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
1005                 QETH_CARD_TEXT(card, 3, "openREC");
1006                 return -ERESTARTSYS;
1007         }
1008         return __qeth_l2_open(dev);
1009 }
1010
1011 static int qeth_l2_stop(struct net_device *dev)
1012 {
1013         struct qeth_card *card = dev->ml_priv;
1014
1015         QETH_CARD_TEXT(card, 4, "qethstop");
1016         netif_tx_disable(dev);
1017         if (card->state == CARD_STATE_UP) {
1018                 card->state = CARD_STATE_SOFTSETUP;
1019                 napi_disable(&card->napi);
1020         }
1021         return 0;
1022 }
1023
1024 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
1025 {
1026         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1027
1028         qeth_l2_create_device_attributes(&gdev->dev);
1029         INIT_LIST_HEAD(&card->vid_list);
1030         hash_init(card->mac_htable);
1031         card->options.layer2 = 1;
1032         card->info.hwtrap = 0;
1033         return 0;
1034 }
1035
1036 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
1037 {
1038         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1039
1040         qeth_l2_remove_device_attributes(&cgdev->dev);
1041         qeth_set_allowed_threads(card, 0, 1);
1042         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1043
1044         if (cgdev->state == CCWGROUP_ONLINE)
1045                 qeth_l2_set_offline(cgdev);
1046
1047         if (card->dev) {
1048                 netif_napi_del(&card->napi);
1049                 unregister_netdev(card->dev);
1050                 card->dev = NULL;
1051         }
1052         return;
1053 }
1054
1055 static const struct ethtool_ops qeth_l2_ethtool_ops = {
1056         .get_link = ethtool_op_get_link,
1057         .get_strings = qeth_core_get_strings,
1058         .get_ethtool_stats = qeth_core_get_ethtool_stats,
1059         .get_sset_count = qeth_core_get_sset_count,
1060         .get_drvinfo = qeth_core_get_drvinfo,
1061         .get_settings = qeth_core_ethtool_get_settings,
1062 };
1063
1064 static const struct ethtool_ops qeth_l2_osn_ops = {
1065         .get_strings = qeth_core_get_strings,
1066         .get_ethtool_stats = qeth_core_get_ethtool_stats,
1067         .get_sset_count = qeth_core_get_sset_count,
1068         .get_drvinfo = qeth_core_get_drvinfo,
1069 };
1070
1071 static const struct net_device_ops qeth_l2_netdev_ops = {
1072         .ndo_open               = qeth_l2_open,
1073         .ndo_stop               = qeth_l2_stop,
1074         .ndo_get_stats          = qeth_get_stats,
1075         .ndo_start_xmit         = qeth_l2_hard_start_xmit,
1076         .ndo_validate_addr      = eth_validate_addr,
1077         .ndo_set_rx_mode        = qeth_l2_set_rx_mode,
1078         .ndo_do_ioctl           = qeth_l2_do_ioctl,
1079         .ndo_set_mac_address    = qeth_l2_set_mac_address,
1080         .ndo_change_mtu         = qeth_change_mtu,
1081         .ndo_vlan_rx_add_vid    = qeth_l2_vlan_rx_add_vid,
1082         .ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
1083         .ndo_tx_timeout         = qeth_tx_timeout,
1084         .ndo_fix_features       = qeth_fix_features,
1085         .ndo_set_features       = qeth_set_features
1086 };
1087
1088 static int qeth_l2_setup_netdev(struct qeth_card *card)
1089 {
1090         switch (card->info.type) {
1091         case QETH_CARD_TYPE_IQD:
1092                 card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
1093                                          ether_setup);
1094                 break;
1095         case QETH_CARD_TYPE_OSN:
1096                 card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
1097                                          ether_setup);
1098                 card->dev->flags |= IFF_NOARP;
1099                 break;
1100         default:
1101                 card->dev = alloc_etherdev(0);
1102         }
1103
1104         if (!card->dev)
1105                 return -ENODEV;
1106
1107         card->dev->ml_priv = card;
1108         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
1109         card->dev->mtu = card->info.initial_mtu;
1110         card->dev->netdev_ops = &qeth_l2_netdev_ops;
1111         card->dev->ethtool_ops =
1112                 (card->info.type != QETH_CARD_TYPE_OSN) ?
1113                 &qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
1114         card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
1115         if (card->info.type == QETH_CARD_TYPE_OSD && !card->info.guestlan) {
1116                 card->dev->hw_features = NETIF_F_SG;
1117                 card->dev->vlan_features = NETIF_F_SG;
1118                 /* OSA 3S and earlier has no RX/TX support */
1119                 if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) {
1120                         card->dev->hw_features |= NETIF_F_IP_CSUM;
1121                         card->dev->vlan_features |= NETIF_F_IP_CSUM;
1122                 }
1123                 if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) {
1124                         card->dev->hw_features |= NETIF_F_RXCSUM;
1125                         card->dev->vlan_features |= NETIF_F_RXCSUM;
1126                 }
1127         }
1128         card->info.broadcast_capable = 1;
1129         qeth_l2_request_initial_mac(card);
1130         card->dev->gso_max_size = (QETH_MAX_BUFFER_ELEMENTS(card) - 1) *
1131                                   PAGE_SIZE;
1132         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
1133         netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
1134         netif_carrier_off(card->dev);
1135         return register_netdev(card->dev);
1136 }
1137
1138 static int qeth_l2_start_ipassists(struct qeth_card *card)
1139 {
1140         /* configure isolation level */
1141         if (qeth_set_access_ctrl_online(card, 0))
1142                 return -ENODEV;
1143         return 0;
1144 }
1145
1146 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
1147 {
1148         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1149         int rc = 0;
1150         enum qeth_card_states recover_flag;
1151
1152         mutex_lock(&card->discipline_mutex);
1153         mutex_lock(&card->conf_mutex);
1154         QETH_DBF_TEXT(SETUP, 2, "setonlin");
1155         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1156
1157         recover_flag = card->state;
1158         rc = qeth_core_hardsetup_card(card);
1159         if (rc) {
1160                 QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
1161                 rc = -ENODEV;
1162                 goto out_remove;
1163         }
1164         qeth_bridgeport_query_support(card);
1165         if (card->options.sbp.supported_funcs)
1166                 dev_info(&card->gdev->dev,
1167                 "The device represents a Bridge Capable Port\n");
1168         qeth_trace_features(card);
1169
1170         if (!card->dev && qeth_l2_setup_netdev(card)) {
1171                 rc = -ENODEV;
1172                 goto out_remove;
1173         }
1174
1175         if (card->info.type != QETH_CARD_TYPE_OSN)
1176                 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
1177
1178         if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
1179                 if (card->info.hwtrap &&
1180                     qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
1181                         card->info.hwtrap = 0;
1182         } else
1183                 card->info.hwtrap = 0;
1184
1185         qeth_l2_setup_bridgeport_attrs(card);
1186
1187         card->state = CARD_STATE_HARDSETUP;
1188         memset(&card->rx, 0, sizeof(struct qeth_rx));
1189         qeth_print_status_message(card);
1190
1191         /* softsetup */
1192         QETH_DBF_TEXT(SETUP, 2, "softsetp");
1193
1194         rc = qeth_send_startlan(card);
1195         if (rc) {
1196                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1197                 if (rc == 0xe080) {
1198                         dev_warn(&card->gdev->dev,
1199                                 "The LAN is offline\n");
1200                         card->lan_online = 0;
1201                         goto contin;
1202                 }
1203                 rc = -ENODEV;
1204                 goto out_remove;
1205         } else
1206                 card->lan_online = 1;
1207
1208 contin:
1209         if ((card->info.type == QETH_CARD_TYPE_OSD) ||
1210             (card->info.type == QETH_CARD_TYPE_OSX)) {
1211                 rc = qeth_l2_start_ipassists(card);
1212                 if (rc)
1213                         goto out_remove;
1214         }
1215
1216         if (card->info.type != QETH_CARD_TYPE_OSN &&
1217             card->info.type != QETH_CARD_TYPE_OSM)
1218                 qeth_l2_process_vlans(card);
1219
1220         netif_tx_disable(card->dev);
1221
1222         rc = qeth_init_qdio_queues(card);
1223         if (rc) {
1224                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1225                 rc = -ENODEV;
1226                 goto out_remove;
1227         }
1228         card->state = CARD_STATE_SOFTSETUP;
1229         if (card->lan_online)
1230                 netif_carrier_on(card->dev);
1231         else
1232                 netif_carrier_off(card->dev);
1233
1234         qeth_set_allowed_threads(card, 0xffffffff, 0);
1235         if (recover_flag == CARD_STATE_RECOVER) {
1236                 if (recovery_mode &&
1237                     card->info.type != QETH_CARD_TYPE_OSN) {
1238                         __qeth_l2_open(card->dev);
1239                 } else {
1240                         rtnl_lock();
1241                         dev_open(card->dev);
1242                         rtnl_unlock();
1243                 }
1244                 /* this also sets saved unicast addresses */
1245                 qeth_l2_set_rx_mode(card->dev);
1246                 rtnl_lock();
1247                 qeth_recover_features(card->dev);
1248                 rtnl_unlock();
1249         }
1250         /* let user_space know that device is online */
1251         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1252         mutex_unlock(&card->conf_mutex);
1253         mutex_unlock(&card->discipline_mutex);
1254         return 0;
1255
1256 out_remove:
1257         qeth_l2_stop_card(card, 0);
1258         ccw_device_set_offline(CARD_DDEV(card));
1259         ccw_device_set_offline(CARD_WDEV(card));
1260         ccw_device_set_offline(CARD_RDEV(card));
1261         qdio_free(CARD_DDEV(card));
1262         if (recover_flag == CARD_STATE_RECOVER)
1263                 card->state = CARD_STATE_RECOVER;
1264         else
1265                 card->state = CARD_STATE_DOWN;
1266         mutex_unlock(&card->conf_mutex);
1267         mutex_unlock(&card->discipline_mutex);
1268         return rc;
1269 }
1270
1271 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1272 {
1273         return __qeth_l2_set_online(gdev, 0);
1274 }
1275
1276 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1277                                         int recovery_mode)
1278 {
1279         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1280         int rc = 0, rc2 = 0, rc3 = 0;
1281         enum qeth_card_states recover_flag;
1282
1283         mutex_lock(&card->discipline_mutex);
1284         mutex_lock(&card->conf_mutex);
1285         QETH_DBF_TEXT(SETUP, 3, "setoffl");
1286         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1287
1288         if (card->dev && netif_carrier_ok(card->dev))
1289                 netif_carrier_off(card->dev);
1290         recover_flag = card->state;
1291         if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
1292                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1293                 card->info.hwtrap = 1;
1294         }
1295         qeth_l2_stop_card(card, recovery_mode);
1296         rc  = ccw_device_set_offline(CARD_DDEV(card));
1297         rc2 = ccw_device_set_offline(CARD_WDEV(card));
1298         rc3 = ccw_device_set_offline(CARD_RDEV(card));
1299         if (!rc)
1300                 rc = (rc2) ? rc2 : rc3;
1301         if (rc)
1302                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1303         qdio_free(CARD_DDEV(card));
1304         if (recover_flag == CARD_STATE_UP)
1305                 card->state = CARD_STATE_RECOVER;
1306         /* let user_space know that device is offline */
1307         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1308         mutex_unlock(&card->conf_mutex);
1309         mutex_unlock(&card->discipline_mutex);
1310         return 0;
1311 }
1312
1313 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1314 {
1315         return __qeth_l2_set_offline(cgdev, 0);
1316 }
1317
1318 static int qeth_l2_recover(void *ptr)
1319 {
1320         struct qeth_card *card;
1321         int rc = 0;
1322
1323         card = (struct qeth_card *) ptr;
1324         QETH_CARD_TEXT(card, 2, "recover1");
1325         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1326                 return 0;
1327         QETH_CARD_TEXT(card, 2, "recover2");
1328         dev_warn(&card->gdev->dev,
1329                 "A recovery process has been started for the device\n");
1330         qeth_set_recovery_task(card);
1331         __qeth_l2_set_offline(card->gdev, 1);
1332         rc = __qeth_l2_set_online(card->gdev, 1);
1333         if (!rc)
1334                 dev_info(&card->gdev->dev,
1335                         "Device successfully recovered!\n");
1336         else {
1337                 qeth_close_dev(card);
1338                 dev_warn(&card->gdev->dev, "The qeth device driver "
1339                                 "failed to recover an error on the device\n");
1340         }
1341         qeth_clear_recovery_task(card);
1342         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1343         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1344         return 0;
1345 }
1346
1347 static int __init qeth_l2_init(void)
1348 {
1349         pr_info("register layer 2 discipline\n");
1350         return 0;
1351 }
1352
1353 static void __exit qeth_l2_exit(void)
1354 {
1355         pr_info("unregister layer 2 discipline\n");
1356 }
1357
1358 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1359 {
1360         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1361         qeth_set_allowed_threads(card, 0, 1);
1362         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
1363                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1364         qeth_qdio_clear_card(card, 0);
1365         qeth_clear_qdio_buffers(card);
1366         qdio_free(CARD_DDEV(card));
1367 }
1368
1369 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1370 {
1371         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1372
1373         if (card->dev)
1374                 netif_device_detach(card->dev);
1375         qeth_set_allowed_threads(card, 0, 1);
1376         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1377         if (gdev->state == CCWGROUP_OFFLINE)
1378                 return 0;
1379         if (card->state == CARD_STATE_UP) {
1380                 if (card->info.hwtrap)
1381                         qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
1382                 __qeth_l2_set_offline(card->gdev, 1);
1383         } else
1384                 __qeth_l2_set_offline(card->gdev, 0);
1385         return 0;
1386 }
1387
1388 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1389 {
1390         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1391         int rc = 0;
1392
1393         if (gdev->state == CCWGROUP_OFFLINE)
1394                 goto out;
1395
1396         if (card->state == CARD_STATE_RECOVER) {
1397                 rc = __qeth_l2_set_online(card->gdev, 1);
1398                 if (rc) {
1399                         rtnl_lock();
1400                         dev_close(card->dev);
1401                         rtnl_unlock();
1402                 }
1403         } else
1404                 rc = __qeth_l2_set_online(card->gdev, 0);
1405 out:
1406         qeth_set_allowed_threads(card, 0xffffffff, 0);
1407         if (card->dev)
1408                 netif_device_attach(card->dev);
1409         if (rc)
1410                 dev_warn(&card->gdev->dev, "The qeth device driver "
1411                         "failed to recover an error on the device\n");
1412         return rc;
1413 }
1414
1415 /* Returns zero if the command is successfully "consumed" */
1416 static int qeth_l2_control_event(struct qeth_card *card,
1417                                         struct qeth_ipa_cmd *cmd)
1418 {
1419         switch (cmd->hdr.command) {
1420         case IPA_CMD_SETBRIDGEPORT_OSA:
1421         case IPA_CMD_SETBRIDGEPORT_IQD:
1422                 if (cmd->data.sbp.hdr.command_code ==
1423                                 IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
1424                         qeth_bridge_state_change(card, cmd);
1425                         return 0;
1426                 } else
1427                         return 1;
1428         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
1429                 qeth_bridge_host_event(card, cmd);
1430                 return 0;
1431         default:
1432                 return 1;
1433         }
1434 }
1435
1436 struct qeth_discipline qeth_l2_discipline = {
1437         .start_poll = qeth_qdio_start_poll,
1438         .input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
1439         .output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
1440         .recover = qeth_l2_recover,
1441         .setup = qeth_l2_probe_device,
1442         .remove = qeth_l2_remove_device,
1443         .set_online = qeth_l2_set_online,
1444         .set_offline = qeth_l2_set_offline,
1445         .shutdown = qeth_l2_shutdown,
1446         .freeze = qeth_l2_pm_suspend,
1447         .thaw = qeth_l2_pm_resume,
1448         .restore = qeth_l2_pm_resume,
1449         .control_event_handler = qeth_l2_control_event,
1450 };
1451 EXPORT_SYMBOL_GPL(qeth_l2_discipline);
1452
1453 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1454                            struct qeth_cmd_buffer *iob)
1455 {
1456         unsigned long flags;
1457         int rc = 0;
1458
1459         QETH_CARD_TEXT(card, 5, "osndctrd");
1460
1461         wait_event(card->wait_q,
1462                    atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1463         qeth_prepare_control_data(card, len, iob);
1464         QETH_CARD_TEXT(card, 6, "osnoirqp");
1465         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1466         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1467                               (addr_t) iob, 0, 0);
1468         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1469         if (rc) {
1470                 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1471                            "ccw_device_start rc = %i\n", rc);
1472                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
1473                 qeth_release_buffer(iob->channel, iob);
1474                 atomic_set(&card->write.irq_pending, 0);
1475                 wake_up(&card->wait_q);
1476         }
1477         return rc;
1478 }
1479
1480 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1481                         struct qeth_cmd_buffer *iob, int data_len)
1482 {
1483         u16 s1, s2;
1484
1485         QETH_CARD_TEXT(card, 4, "osndipa");
1486
1487         qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1488         s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1489         s2 = (u16)data_len;
1490         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1491         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1492         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1493         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1494         return qeth_osn_send_control_data(card, s1, iob);
1495 }
1496
1497 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1498 {
1499         struct qeth_cmd_buffer *iob;
1500         struct qeth_card *card;
1501         int rc;
1502
1503         if (!dev)
1504                 return -ENODEV;
1505         card = dev->ml_priv;
1506         if (!card)
1507                 return -ENODEV;
1508         QETH_CARD_TEXT(card, 2, "osnsdmc");
1509         if (!qeth_card_hw_is_reachable(card))
1510                 return -ENODEV;
1511         iob = qeth_wait_for_buffer(&card->write);
1512         memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1513         rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1514         return rc;
1515 }
1516 EXPORT_SYMBOL(qeth_osn_assist);
1517
1518 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1519                   int (*assist_cb)(struct net_device *, void *),
1520                   int (*data_cb)(struct sk_buff *))
1521 {
1522         struct qeth_card *card;
1523
1524         *dev = qeth_l2_netdev_by_devno(read_dev_no);
1525         if (*dev == NULL)
1526                 return -ENODEV;
1527         card = (*dev)->ml_priv;
1528         if (!card)
1529                 return -ENODEV;
1530         QETH_CARD_TEXT(card, 2, "osnreg");
1531         if ((assist_cb == NULL) || (data_cb == NULL))
1532                 return -EINVAL;
1533         card->osn_info.assist_cb = assist_cb;
1534         card->osn_info.data_cb = data_cb;
1535         return 0;
1536 }
1537 EXPORT_SYMBOL(qeth_osn_register);
1538
1539 void qeth_osn_deregister(struct net_device *dev)
1540 {
1541         struct qeth_card *card;
1542
1543         if (!dev)
1544                 return;
1545         card = dev->ml_priv;
1546         if (!card)
1547                 return;
1548         QETH_CARD_TEXT(card, 2, "osndereg");
1549         card->osn_info.assist_cb = NULL;
1550         card->osn_info.data_cb = NULL;
1551         return;
1552 }
1553 EXPORT_SYMBOL(qeth_osn_deregister);
1554
1555 /* SETBRIDGEPORT support, async notifications */
1556
1557 enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};
1558
1559 /**
1560  * qeth_bridge_emit_host_event() - bridgeport address change notification
1561  * @card:  qeth_card structure pointer, for udev events.
1562  * @evtype:  "normal" register/unregister, or abort, or reset. For abort
1563  *            and reset token and addr_lnid are unused and may be NULL.
1564  * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
1565  *                        object, 0 - addition of an object.
1566  *                        0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
1567  * @token: "network token" structure identifying physical address of the port.
1568  * @addr_lnid: pointer to structure with MAC address and VLAN ID.
1569  *
1570  * This function is called when registrations and deregistrations are
1571  * reported by the hardware, and also when notifications are enabled -
1572  * for all currently registered addresses.
1573  */
1574 static void qeth_bridge_emit_host_event(struct qeth_card *card,
1575         enum qeth_an_event_type evtype,
1576         u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
1577 {
1578         char str[7][32];
1579         char *env[8];
1580         int i = 0;
1581
1582         switch (evtype) {
1583         case anev_reg_unreg:
1584                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
1585                                 (code & IPA_ADDR_CHANGE_CODE_REMOVAL)
1586                                 ? "deregister" : "register");
1587                 env[i] = str[i]; i++;
1588                 if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
1589                         snprintf(str[i], sizeof(str[i]), "VLAN=%d",
1590                                 addr_lnid->lnid);
1591                         env[i] = str[i]; i++;
1592                 }
1593                 if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
1594                         snprintf(str[i], sizeof(str[i]), "MAC=%pM",
1595                                 addr_lnid->mac);
1596                         env[i] = str[i]; i++;
1597                 }
1598                 snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
1599                         token->cssid, token->ssid, token->devnum);
1600                 env[i] = str[i]; i++;
1601                 snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
1602                 env[i] = str[i]; i++;
1603                 snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
1604                                 token->chpid);
1605                 env[i] = str[i]; i++;
1606                 snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
1607                 env[i] = str[i]; i++;
1608                 break;
1609         case anev_abort:
1610                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
1611                 env[i] = str[i]; i++;
1612                 break;
1613         case anev_reset:
1614                 snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
1615                 env[i] = str[i]; i++;
1616                 break;
1617         }
1618         env[i] = NULL;
1619         kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
1620 }
1621
1622 struct qeth_bridge_state_data {
1623         struct work_struct worker;
1624         struct qeth_card *card;
1625         struct qeth_sbp_state_change qports;
1626 };
1627
1628 static void qeth_bridge_state_change_worker(struct work_struct *work)
1629 {
1630         struct qeth_bridge_state_data *data =
1631                 container_of(work, struct qeth_bridge_state_data, worker);
1632         /* We are only interested in the first entry - local port */
1633         struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
1634         char env_locrem[32];
1635         char env_role[32];
1636         char env_state[32];
1637         char *env[] = {
1638                 env_locrem,
1639                 env_role,
1640                 env_state,
1641                 NULL
1642         };
1643
1644         /* Role should not change by itself, but if it did, */
1645         /* information from the hardware is authoritative.  */
1646         mutex_lock(&data->card->conf_mutex);
1647         data->card->options.sbp.role = entry->role;
1648         mutex_unlock(&data->card->conf_mutex);
1649
1650         snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
1651         snprintf(env_role, sizeof(env_role), "ROLE=%s",
1652                 (entry->role == QETH_SBP_ROLE_NONE) ? "none" :
1653                 (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
1654                 (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
1655                 "<INVALID>");
1656         snprintf(env_state, sizeof(env_state), "STATE=%s",
1657                 (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
1658                 (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
1659                 (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
1660                 "<INVALID>");
1661         kobject_uevent_env(&data->card->gdev->dev.kobj,
1662                                 KOBJ_CHANGE, env);
1663         kfree(data);
1664 }
1665
1666 static void qeth_bridge_state_change(struct qeth_card *card,
1667                                         struct qeth_ipa_cmd *cmd)
1668 {
1669         struct qeth_sbp_state_change *qports =
1670                  &cmd->data.sbp.data.state_change;
1671         struct qeth_bridge_state_data *data;
1672         int extrasize;
1673
1674         QETH_CARD_TEXT(card, 2, "brstchng");
1675         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1676                 QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
1677                 return;
1678         }
1679         extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
1680         data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
1681                 GFP_ATOMIC);
1682         if (!data) {
1683                 QETH_CARD_TEXT(card, 2, "BPSalloc");
1684                 return;
1685         }
1686         INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
1687         data->card = card;
1688         memcpy(&data->qports, qports,
1689                         sizeof(struct qeth_sbp_state_change) + extrasize);
1690         queue_work(qeth_wq, &data->worker);
1691 }
1692
1693 struct qeth_bridge_host_data {
1694         struct work_struct worker;
1695         struct qeth_card *card;
1696         struct qeth_ipacmd_addr_change hostevs;
1697 };
1698
1699 static void qeth_bridge_host_event_worker(struct work_struct *work)
1700 {
1701         struct qeth_bridge_host_data *data =
1702                 container_of(work, struct qeth_bridge_host_data, worker);
1703         int i;
1704
1705         if (data->hostevs.lost_event_mask) {
1706                 dev_info(&data->card->gdev->dev,
1707 "Address notification from the Bridge Port stopped %s (%s)\n",
1708                         data->card->dev->name,
1709                         (data->hostevs.lost_event_mask == 0x01)
1710                         ? "Overflow"
1711                         : (data->hostevs.lost_event_mask == 0x02)
1712                         ? "Bridge port state change"
1713                         : "Unknown reason");
1714                 mutex_lock(&data->card->conf_mutex);
1715                 data->card->options.sbp.hostnotification = 0;
1716                 mutex_unlock(&data->card->conf_mutex);
1717                 qeth_bridge_emit_host_event(data->card, anev_abort,
1718                         0, NULL, NULL);
1719         } else
1720                 for (i = 0; i < data->hostevs.num_entries; i++) {
1721                         struct qeth_ipacmd_addr_change_entry *entry =
1722                                         &data->hostevs.entry[i];
1723                         qeth_bridge_emit_host_event(data->card,
1724                                         anev_reg_unreg,
1725                                         entry->change_code,
1726                                         &entry->token, &entry->addr_lnid);
1727                 }
1728         kfree(data);
1729 }
1730
1731 static void qeth_bridge_host_event(struct qeth_card *card,
1732                                         struct qeth_ipa_cmd *cmd)
1733 {
1734         struct qeth_ipacmd_addr_change *hostevs =
1735                  &cmd->data.addrchange;
1736         struct qeth_bridge_host_data *data;
1737         int extrasize;
1738
1739         QETH_CARD_TEXT(card, 2, "brhostev");
1740         if (cmd->hdr.return_code != 0x0000) {
1741                 if (cmd->hdr.return_code == 0x0010) {
1742                         if (hostevs->lost_event_mask == 0x00)
1743                                 hostevs->lost_event_mask = 0xff;
1744                 } else {
1745                         QETH_CARD_TEXT_(card, 2, "BPHe%04x",
1746                                 cmd->hdr.return_code);
1747                         return;
1748                 }
1749         }
1750         extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
1751                                                 hostevs->num_entries;
1752         data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
1753                 GFP_ATOMIC);
1754         if (!data) {
1755                 QETH_CARD_TEXT(card, 2, "BPHalloc");
1756                 return;
1757         }
1758         INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
1759         data->card = card;
1760         memcpy(&data->hostevs, hostevs,
1761                         sizeof(struct qeth_ipacmd_addr_change) + extrasize);
1762         queue_work(qeth_wq, &data->worker);
1763 }
1764
1765 /* SETBRIDGEPORT support; sending commands */
1766
1767 struct _qeth_sbp_cbctl {
1768         u16 ipa_rc;
1769         u16 cmd_rc;
1770         union {
1771                 u32 supported;
1772                 struct {
1773                         enum qeth_sbp_roles *role;
1774                         enum qeth_sbp_states *state;
1775                 } qports;
1776         } data;
1777 };
1778
1779 /**
1780  * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
1781  * @card:                     qeth_card structure pointer, for debug messages.
1782  * @cbctl:                    state structure with hardware return codes.
1783  * @setcmd:                   IPA command code
1784  *
1785  * Returns negative errno-compatible error indication or 0 on success.
1786  */
1787 static int qeth_bridgeport_makerc(struct qeth_card *card,
1788         struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
1789 {
1790         int rc;
1791         int is_iqd = (card->info.type == QETH_CARD_TYPE_IQD);
1792
1793         if ((is_iqd && (cbctl->ipa_rc == IPA_RC_SUCCESS)) ||
1794             (!is_iqd && (cbctl->ipa_rc == cbctl->cmd_rc)))
1795                 switch (cbctl->cmd_rc) {
1796                 case 0x0000:
1797                         rc = 0;
1798                         break;
1799                 case 0x2B04:
1800                 case 0x0004:
1801                         rc = -EOPNOTSUPP;
1802                         break;
1803                 case 0x2B0C:
1804                 case 0x000C: /* Not configured as bridge Port */
1805                         rc = -ENODEV; /* maybe not the best code here? */
1806                         dev_err(&card->gdev->dev,
1807         "The device is not configured as a Bridge Port\n");
1808                         break;
1809                 case 0x2B10:
1810                 case 0x0010: /* OS mismatch */
1811                         rc = -EPERM;
1812                         dev_err(&card->gdev->dev,
1813         "A Bridge Port is already configured by a different operating system\n");
1814                         break;
1815                 case 0x2B14:
1816                 case 0x0014: /* Another device is Primary */
1817                         switch (setcmd) {
1818                         case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
1819                                 rc = -EEXIST;
1820                                 dev_err(&card->gdev->dev,
1821         "The LAN already has a primary Bridge Port\n");
1822                                 break;
1823                         case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
1824                                 rc = -EBUSY;
1825                                 dev_err(&card->gdev->dev,
1826         "The device is already a primary Bridge Port\n");
1827                                 break;
1828                         default:
1829                                 rc = -EIO;
1830                         }
1831                         break;
1832                 case 0x2B18:
1833                 case 0x0018: /* This device is currently Secondary */
1834                         rc = -EBUSY;
1835                         dev_err(&card->gdev->dev,
1836         "The device is already a secondary Bridge Port\n");
1837                         break;
1838                 case 0x2B1C:
1839                 case 0x001C: /* Limit for Secondary devices reached */
1840                         rc = -EEXIST;
1841                         dev_err(&card->gdev->dev,
1842         "The LAN cannot have more secondary Bridge Ports\n");
1843                         break;
1844                 case 0x2B24:
1845                 case 0x0024: /* This device is currently Primary */
1846                         rc = -EBUSY;
1847                         dev_err(&card->gdev->dev,
1848         "The device is already a primary Bridge Port\n");
1849                         break;
1850                 case 0x2B20:
1851                 case 0x0020: /* Not authorized by zManager */
1852                         rc = -EACCES;
1853                         dev_err(&card->gdev->dev,
1854         "The device is not authorized to be a Bridge Port\n");
1855                         break;
1856                 default:
1857                         rc = -EIO;
1858                 }
1859         else
1860                 switch (cbctl->ipa_rc) {
1861                 case IPA_RC_NOTSUPP:
1862                         rc = -EOPNOTSUPP;
1863                         break;
1864                 case IPA_RC_UNSUPPORTED_COMMAND:
1865                         rc = -EOPNOTSUPP;
1866                         break;
1867                 default:
1868                         rc = -EIO;
1869                 }
1870
1871         if (rc) {
1872                 QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
1873                 QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
1874         }
1875         return rc;
1876 }
1877
1878 static inline int ipa_cmd_sbp(struct qeth_card *card)
1879 {
1880         return (card->info.type == QETH_CARD_TYPE_IQD) ?
1881                 IPA_CMD_SETBRIDGEPORT_IQD :
1882                 IPA_CMD_SETBRIDGEPORT_OSA;
1883 }
1884
1885 static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
1886         struct qeth_reply *reply, unsigned long data)
1887 {
1888         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1889         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1890         QETH_CARD_TEXT(card, 2, "brqsupcb");
1891         cbctl->ipa_rc = cmd->hdr.return_code;
1892         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1893         if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
1894                 cbctl->data.supported =
1895                         cmd->data.sbp.data.query_cmds_supp.supported_cmds;
1896         } else {
1897                 cbctl->data.supported = 0;
1898         }
1899         return 0;
1900 }
1901
1902 /**
1903  * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
1904  * @card:                            qeth_card structure pointer.
1905  *
1906  * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
1907  * strucutre: card->options.sbp.supported_funcs.
1908  */
1909 static void qeth_bridgeport_query_support(struct qeth_card *card)
1910 {
1911         struct qeth_cmd_buffer *iob;
1912         struct qeth_ipa_cmd *cmd;
1913         struct _qeth_sbp_cbctl cbctl;
1914
1915         QETH_CARD_TEXT(card, 2, "brqsuppo");
1916         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1917         if (!iob)
1918                 return;
1919         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1920         cmd->data.sbp.hdr.cmdlength =
1921                 sizeof(struct qeth_ipacmd_sbp_hdr) +
1922                 sizeof(struct qeth_sbp_query_cmds_supp);
1923         cmd->data.sbp.hdr.command_code =
1924                 IPA_SBP_QUERY_COMMANDS_SUPPORTED;
1925         cmd->data.sbp.hdr.used_total = 1;
1926         cmd->data.sbp.hdr.seq_no = 1;
1927         if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
1928                                                         (void *)&cbctl) ||
1929             qeth_bridgeport_makerc(card, &cbctl,
1930                                         IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
1931                 /* non-zero makerc signifies failure, and produce messages */
1932                 card->options.sbp.role = QETH_SBP_ROLE_NONE;
1933                 return;
1934         }
1935         card->options.sbp.supported_funcs = cbctl.data.supported;
1936 }
1937
1938 static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
1939         struct qeth_reply *reply, unsigned long data)
1940 {
1941         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
1942         struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
1943         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
1944
1945         QETH_CARD_TEXT(card, 2, "brqprtcb");
1946         cbctl->ipa_rc = cmd->hdr.return_code;
1947         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
1948         if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
1949                 return 0;
1950         if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
1951                 cbctl->cmd_rc = 0xffff;
1952                 QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
1953                 return 0;
1954         }
1955         /* first entry contains the state of the local port */
1956         if (qports->num_entries > 0) {
1957                 if (cbctl->data.qports.role)
1958                         *cbctl->data.qports.role = qports->entry[0].role;
1959                 if (cbctl->data.qports.state)
1960                         *cbctl->data.qports.state = qports->entry[0].state;
1961         }
1962         return 0;
1963 }
1964
1965 /**
1966  * qeth_bridgeport_query_ports() - query local bridgeport status.
1967  * @card:                          qeth_card structure pointer.
1968  * @role:   Role of the port: 0-none, 1-primary, 2-secondary.
1969  * @state:  State of the port: 0-inactive, 1-standby, 2-active.
1970  *
1971  * Returns negative errno-compatible error indication or 0 on success.
1972  *
1973  * 'role' and 'state' are not updated in case of hardware operation failure.
1974  */
1975 int qeth_bridgeport_query_ports(struct qeth_card *card,
1976         enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
1977 {
1978         int rc = 0;
1979         struct qeth_cmd_buffer *iob;
1980         struct qeth_ipa_cmd *cmd;
1981         struct _qeth_sbp_cbctl cbctl = {
1982                 .data = {
1983                         .qports = {
1984                                 .role = role,
1985                                 .state = state,
1986                         },
1987                 },
1988         };
1989
1990         QETH_CARD_TEXT(card, 2, "brqports");
1991         if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
1992                 return -EOPNOTSUPP;
1993         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
1994         if (!iob)
1995                 return -ENOMEM;
1996         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
1997         cmd->data.sbp.hdr.cmdlength =
1998                 sizeof(struct qeth_ipacmd_sbp_hdr);
1999         cmd->data.sbp.hdr.command_code =
2000                 IPA_SBP_QUERY_BRIDGE_PORTS;
2001         cmd->data.sbp.hdr.used_total = 1;
2002         cmd->data.sbp.hdr.seq_no = 1;
2003         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
2004                                 (void *)&cbctl);
2005         if (rc < 0)
2006                 return rc;
2007         return qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
2008 }
2009 EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);
2010
2011 static int qeth_bridgeport_set_cb(struct qeth_card *card,
2012         struct qeth_reply *reply, unsigned long data)
2013 {
2014         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
2015         struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
2016         QETH_CARD_TEXT(card, 2, "brsetrcb");
2017         cbctl->ipa_rc = cmd->hdr.return_code;
2018         cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
2019         return 0;
2020 }
2021
2022 /**
2023  * qeth_bridgeport_setrole() - Assign primary role to the port.
2024  * @card:                      qeth_card structure pointer.
2025  * @role:                      Role to assign.
2026  *
2027  * Returns negative errno-compatible error indication or 0 on success.
2028  */
2029 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
2030 {
2031         int rc = 0;
2032         int cmdlength;
2033         struct qeth_cmd_buffer *iob;
2034         struct qeth_ipa_cmd *cmd;
2035         struct _qeth_sbp_cbctl cbctl;
2036         enum qeth_ipa_sbp_cmd setcmd;
2037
2038         QETH_CARD_TEXT(card, 2, "brsetrol");
2039         switch (role) {
2040         case QETH_SBP_ROLE_NONE:
2041                 setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
2042                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
2043                         sizeof(struct qeth_sbp_reset_role);
2044                 break;
2045         case QETH_SBP_ROLE_PRIMARY:
2046                 setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
2047                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
2048                         sizeof(struct qeth_sbp_set_primary);
2049                 break;
2050         case QETH_SBP_ROLE_SECONDARY:
2051                 setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
2052                 cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
2053                         sizeof(struct qeth_sbp_set_secondary);
2054                 break;
2055         default:
2056                 return -EINVAL;
2057         }
2058         if (!(card->options.sbp.supported_funcs & setcmd))
2059                 return -EOPNOTSUPP;
2060         iob = qeth_get_ipacmd_buffer(card, ipa_cmd_sbp(card), 0);
2061         if (!iob)
2062                 return -ENOMEM;
2063         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
2064         cmd->data.sbp.hdr.cmdlength = cmdlength;
2065         cmd->data.sbp.hdr.command_code = setcmd;
2066         cmd->data.sbp.hdr.used_total = 1;
2067         cmd->data.sbp.hdr.seq_no = 1;
2068         rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
2069                                 (void *)&cbctl);
2070         if (rc < 0)
2071                 return rc;
2072         return qeth_bridgeport_makerc(card, &cbctl, setcmd);
2073 }
2074
2075 /**
2076  * qeth_anset_makerc() - derive "traditional" error from hardware codes.
2077  * @card:                     qeth_card structure pointer, for debug messages.
2078  *
2079  * Returns negative errno-compatible error indication or 0 on success.
2080  */
2081 static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
2082 {
2083         int rc;
2084
2085         if (pnso_rc == 0)
2086                 switch (response) {
2087                 case 0x0001:
2088                         rc = 0;
2089                         break;
2090                 case 0x0004:
2091                 case 0x0100:
2092                 case 0x0106:
2093                         rc = -EOPNOTSUPP;
2094                         dev_err(&card->gdev->dev,
2095                                 "Setting address notification failed\n");
2096                         break;
2097                 case 0x0107:
2098                         rc = -EAGAIN;
2099                         break;
2100                 default:
2101                         rc = -EIO;
2102                 }
2103         else
2104                 rc = -EIO;
2105
2106         if (rc) {
2107                 QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
2108                 QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
2109         }
2110         return rc;
2111 }
2112
2113 static void qeth_bridgeport_an_set_cb(void *priv,
2114                 enum qdio_brinfo_entry_type type, void *entry)
2115 {
2116         struct qeth_card *card = (struct qeth_card *)priv;
2117         struct qdio_brinfo_entry_l2 *l2entry;
2118         u8 code;
2119
2120         if (type != l2_addr_lnid) {
2121                 WARN_ON_ONCE(1);
2122                 return;
2123         }
2124
2125         l2entry = (struct qdio_brinfo_entry_l2 *)entry;
2126         code = IPA_ADDR_CHANGE_CODE_MACADDR;
2127         if (l2entry->addr_lnid.lnid)
2128                 code |= IPA_ADDR_CHANGE_CODE_VLANID;
2129         qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
2130                 (struct net_if_token *)&l2entry->nit,
2131                 (struct mac_addr_lnid *)&l2entry->addr_lnid);
2132 }
2133
2134 /**
2135  * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
2136  * @card:                     qeth_card structure pointer.
2137  * @enable:                   0 - disable, non-zero - enable notifications
2138  *
2139  * Returns negative errno-compatible error indication or 0 on success.
2140  *
2141  * On enable, emits a series of address notifications udev events for all
2142  * currently registered hosts.
2143  */
2144 int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
2145 {
2146         int rc;
2147         u16 response;
2148         struct ccw_device *ddev;
2149         struct subchannel_id schid;
2150
2151         if (!card)
2152                 return -EINVAL;
2153         if (!card->options.sbp.supported_funcs)
2154                 return -EOPNOTSUPP;
2155         ddev = CARD_DDEV(card);
2156         ccw_device_get_schid(ddev, &schid);
2157
2158         if (enable) {
2159                 qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
2160                 rc = qdio_pnso_brinfo(schid, 1, &response,
2161                         qeth_bridgeport_an_set_cb, card);
2162         } else
2163                 rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
2164         return qeth_anset_makerc(card, rc, response);
2165 }
2166 EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);
2167
2168 module_init(qeth_l2_init);
2169 module_exit(qeth_l2_exit);
2170 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
2171 MODULE_DESCRIPTION("qeth layer 2 discipline");
2172 MODULE_LICENSE("GPL");