drivers/s390/net/qeth_l2_main.c

   1 /*
   2  *  drivers/s390/net/qeth_l2_main.c
   3  *
   4  *    Copyright IBM Corp. 2007, 2009
   5  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   6  *               Frank Pavlic <fpavlic@de.ibm.com>,
   7  *               Thomas Spatzier <tspat@de.ibm.com>,
   8  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   9  */
  10
  11 #define KMSG_COMPONENT "qeth"
  12 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/string.h>
  17 #include <linux/errno.h>
  18 #include <linux/kernel.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/mii.h>
  21 #include <linux/ip.h>
  22 #include <linux/list.h>
  23
  24 #include "qeth_core.h"
  25
  26 static int qeth_l2_set_offline(struct ccwgroup_device *);
  27 static int qeth_l2_stop(struct net_device *);
  28 static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
  29 static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
  30                            enum qeth_ipa_cmds,
  31                            int (*reply_cb) (struct qeth_card *,
  32                                             struct qeth_reply*,
  33                                             unsigned long));
  34 static void qeth_l2_set_multicast_list(struct net_device *);
  35 static int qeth_l2_recover(void *);
  36
  37 static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
  38 {
  39         struct qeth_card *card = dev->ml_priv;
  40         struct mii_ioctl_data *mii_data;
  41         int rc = 0;
  42
  43         if (!card)
  44                 return -ENODEV;
  45
  46         if ((card->state != CARD_STATE_UP) &&
  47                 (card->state != CARD_STATE_SOFTSETUP))
  48                 return -ENODEV;
  49
  50         if (card->info.type == QETH_CARD_TYPE_OSN)
  51                 return -EPERM;
  52
  53         switch (cmd) {
  54         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
  55                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
  56                 break;
  57         case SIOC_QETH_GET_CARD_TYPE:
  58                 if ((card->info.type == QETH_CARD_TYPE_OSAE) &&
  59                     !card->info.guestlan)
  60                         return 1;
  61                 return 0;
  62                 break;
  63         case SIOCGMIIPHY:
  64                 mii_data = if_mii(rq);
  65                 mii_data->phy_id = 0;
  66                 break;
  67         case SIOCGMIIREG:
  68                 mii_data = if_mii(rq);
  69                 if (mii_data->phy_id != 0)
  70                         rc = -EINVAL;
  71                 else
  72                         mii_data->val_out = qeth_mdio_read(dev,
  73                                 mii_data->phy_id, mii_data->reg_num);
  74                 break;
  75         default:
  76                 rc = -EOPNOTSUPP;
  77         }
  78         if (rc)
  79                 QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc);
  80         return rc;
  81 }
  82
  83 static int qeth_l2_verify_dev(struct net_device *dev)
  84 {
  85         struct qeth_card *card;
  86         unsigned long flags;
  87         int rc = 0;
  88
  89         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
  90         list_for_each_entry(card, &qeth_core_card_list.list, list) {
  91                 if (card->dev == dev) {
  92                         rc = QETH_REAL_CARD;
  93                         break;
  94                 }
  95         }
  96         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
  97
  98         return rc;
  99 }
 100
 101 static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
 102 {
 103         struct qeth_card *card;
 104         struct net_device *ndev;
 105         __u16 temp_dev_no;
 106         unsigned long flags;
 107         struct ccw_dev_id read_devid;
 108
 109         ndev = NULL;
 110         memcpy(&temp_dev_no, read_dev_no, 2);
 111         read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
 112         list_for_each_entry(card, &qeth_core_card_list.list, list) {
 113                 ccw_device_get_id(CARD_RDEV(card), &read_devid);
 114                 if (read_devid.devno == temp_dev_no) {
 115                         ndev = card->dev;
 116                         break;
 117                 }
 118         }
 119         read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
 120         return ndev;
 121 }
 122
 123 static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card,
 124                                 struct qeth_reply *reply,
 125                                 unsigned long data)
 126 {
 127         struct qeth_ipa_cmd *cmd;
 128         __u8 *mac;
 129
 130         QETH_DBF_TEXT(TRACE, 2, "L2Sgmacb");
 131         cmd = (struct qeth_ipa_cmd *) data;
 132         mac = &cmd->data.setdelmac.mac[0];
 133         /* MAC already registered, needed in couple/uncouple case */
 134         if (cmd->hdr.return_code ==  IPA_RC_L2_DUP_MAC) {
 135                 QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n",
 136                           mac, QETH_CARD_IFNAME(card));
 137                 cmd->hdr.return_code = 0;
 138         }
 139         if (cmd->hdr.return_code)
 140                 QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n",
 141                           mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 142         return 0;
 143 }
 144
 145 static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
 146 {
 147         QETH_DBF_TEXT(TRACE, 2, "L2Sgmac");
 148         return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC,
 149                                           qeth_l2_send_setgroupmac_cb);
 150 }
 151
 152 static int qeth_l2_send_delgroupmac_cb(struct qeth_card *card,
 153                                 struct qeth_reply *reply,
 154                                 unsigned long data)
 155 {
 156         struct qeth_ipa_cmd *cmd;
 157         __u8 *mac;
 158
 159         QETH_DBF_TEXT(TRACE, 2, "L2Dgmacb");
 160         cmd = (struct qeth_ipa_cmd *) data;
 161         mac = &cmd->data.setdelmac.mac[0];
 162         if (cmd->hdr.return_code)
 163                 QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n",
 164                           mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 165         return 0;
 166 }
 167
 168 static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
 169 {
 170         QETH_DBF_TEXT(TRACE, 2, "L2Dgmac");
 171         return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC,
 172                                           qeth_l2_send_delgroupmac_cb);
 173 }
 174
 175 static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
 176 {
 177         struct qeth_mc_mac *mc;
 178         int rc;
 179
 180         mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);
 181
 182         if (!mc)
 183                 return;
 184
 185         memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
 186         mc->mc_addrlen = OSA_ADDR_LEN;
 187         mc->is_vmac = vmac;
 188
 189         if (vmac) {
 190                 rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
 191                                         NULL);
 192         } else {
 193                 rc = qeth_l2_send_setgroupmac(card, mac);
 194         }
 195
 196         if (!rc)
 197                 list_add_tail(&mc->list, &card->mc_list);
 198         else
 199                 kfree(mc);
 200 }
 201
 202 static void qeth_l2_del_all_mc(struct qeth_card *card)
 203 {
 204         struct qeth_mc_mac *mc, *tmp;
 205
 206         spin_lock_bh(&card->mclock);
 207         list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
 208                 if (mc->is_vmac)
 209                         qeth_l2_send_setdelmac(card, mc->mc_addr,
 210                                         IPA_CMD_DELVMAC, NULL);
 211                 else
 212                         qeth_l2_send_delgroupmac(card, mc->mc_addr);
 213                 list_del(&mc->list);
 214                 kfree(mc);
 215         }
 216         spin_unlock_bh(&card->mclock);
 217 }
 218
 219 static void qeth_l2_get_packet_type(struct qeth_card *card,
 220                         struct qeth_hdr *hdr, struct sk_buff *skb)
 221 {
 222         __u16 hdr_mac;
 223
 224         if (!memcmp(skb->data + QETH_HEADER_SIZE,
 225                     skb->dev->broadcast, 6)) {
 226                 /* broadcast? */
 227                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
 228                 return;
 229         }
 230         hdr_mac = *((__u16 *)skb->data);
 231         /* tr multicast? */
 232         switch (card->info.link_type) {
 233         case QETH_LINK_TYPE_HSTR:
 234         case QETH_LINK_TYPE_LANE_TR:
 235                 if ((hdr_mac == QETH_TR_MAC_NC) ||
 236                     (hdr_mac == QETH_TR_MAC_C))
 237                         hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 238                 else
 239                         hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 240                 break;
 241                 /* eth or so multicast? */
 242         default:
 243                 if ((hdr_mac == QETH_ETH_MAC_V4) ||
 244                      (hdr_mac == QETH_ETH_MAC_V6))
 245                         hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 246                 else
 247                         hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;
 248         }
 249 }
 250
 251 static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
 252                         struct sk_buff *skb, int ipv, int cast_type)
 253 {
 254         struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);
 255
 256         memset(hdr, 0, sizeof(struct qeth_hdr));
 257         hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;
 258
 259         /* set byte byte 3 to casting flags */
 260         if (cast_type == RTN_MULTICAST)
 261                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
 262         else if (cast_type == RTN_BROADCAST)
 263                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
 264         else
 265                 qeth_l2_get_packet_type(card, hdr, skb);
 266
 267         hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
 268         /* VSWITCH relies on the VLAN
 269          * information to be present in
 270          * the QDIO header */
 271         if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
 272                 hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
 273                 hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
 274         }
 275 }
 276
 277 static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
 278                         struct qeth_reply *reply, unsigned long data)
 279 {
 280         struct qeth_ipa_cmd *cmd;
 281
 282         QETH_DBF_TEXT(TRACE, 2, "L2sdvcb");
 283         cmd = (struct qeth_ipa_cmd *) data;
 284         if (cmd->hdr.return_code) {
 285                 QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
 286                           "Continuing\n", cmd->data.setdelvlan.vlan_id,
 287                           QETH_CARD_IFNAME(card), cmd->hdr.return_code);
 288                 QETH_DBF_TEXT_(TRACE, 2, "L2VL%4x", cmd->hdr.command);
 289                 QETH_DBF_TEXT_(TRACE, 2, "L2%s", CARD_BUS_ID(card));
 290                 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
 291         }
 292         return 0;
 293 }
 294
 295 static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
 296                                 enum qeth_ipa_cmds ipacmd)
 297 {
 298         struct qeth_ipa_cmd *cmd;
 299         struct qeth_cmd_buffer *iob;
 300
 301         QETH_DBF_TEXT_(TRACE, 4, "L2sdv%x", ipacmd);
 302         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 303         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 304         cmd->data.setdelvlan.vlan_id = i;
 305         return qeth_send_ipa_cmd(card, iob,
 306                                  qeth_l2_send_setdelvlan_cb, NULL);
 307 }
 308
 309 static void qeth_l2_process_vlans(struct qeth_card *card, int clear)
 310 {
 311         struct qeth_vlan_vid *id;
 312         QETH_DBF_TEXT(TRACE, 3, "L2prcvln");
 313         spin_lock_bh(&card->vlanlock);
 314         list_for_each_entry(id, &card->vid_list, list) {
 315                 if (clear)
 316                         qeth_l2_send_setdelvlan(card, id->vid,
 317                                 IPA_CMD_DELVLAN);
 318                 else
 319                         qeth_l2_send_setdelvlan(card, id->vid,
 320                                 IPA_CMD_SETVLAN);
 321         }
 322         spin_unlock_bh(&card->vlanlock);
 323 }
 324
 325 static void qeth_l2_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
 326 {
 327         struct qeth_card *card = dev->ml_priv;
 328         struct qeth_vlan_vid *id;
 329
 330         QETH_DBF_TEXT_(TRACE, 4, "aid:%d", vid);
 331         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 332                 QETH_DBF_TEXT(TRACE, 3, "aidREC");
 333                 return;
 334         }
 335         id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
 336         if (id) {
 337                 id->vid = vid;
 338                 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
 339                 spin_lock_bh(&card->vlanlock);
 340                 list_add_tail(&id->list, &card->vid_list);
 341                 spin_unlock_bh(&card->vlanlock);
 342         }
 343 }
 344
 345 static void qeth_l2_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
 346 {
 347         struct qeth_vlan_vid *id, *tmpid = NULL;
 348         struct qeth_card *card = dev->ml_priv;
 349
 350         QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid);
 351         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 352                 QETH_DBF_TEXT(TRACE, 3, "kidREC");
 353                 return;
 354         }
 355         spin_lock_bh(&card->vlanlock);
 356         list_for_each_entry(id, &card->vid_list, list) {
 357                 if (id->vid == vid) {
 358                         list_del(&id->list);
 359                         tmpid = id;
 360                         break;
 361                 }
 362         }
 363         spin_unlock_bh(&card->vlanlock);
 364         if (tmpid) {
 365                 qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
 366                 kfree(tmpid);
 367         }
 368         qeth_l2_set_multicast_list(card->dev);
 369 }
 370
 371 static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
 372 {
 373         int rc = 0;
 374
 375         QETH_DBF_TEXT(SETUP , 2, "stopcard");
 376         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 377
 378         qeth_set_allowed_threads(card, 0, 1);
 379         if (card->read.state == CH_STATE_UP &&
 380             card->write.state == CH_STATE_UP &&
 381             (card->state == CARD_STATE_UP)) {
 382                 if (recovery_mode &&
 383                     card->info.type != QETH_CARD_TYPE_OSN) {
 384                         qeth_l2_stop(card->dev);
 385                 } else {
 386                         rtnl_lock();
 387                         dev_close(card->dev);
 388                         rtnl_unlock();
 389                 }
 390                 if (!card->use_hard_stop ||
 391                         recovery_mode) {
 392                         __u8 *mac = &card->dev->dev_addr[0];
 393                         rc = qeth_l2_send_delmac(card, mac);
 394                         QETH_DBF_TEXT_(SETUP, 2, "Lerr%d", rc);
 395                 }
 396                 card->state = CARD_STATE_SOFTSETUP;
 397         }
 398         if (card->state == CARD_STATE_SOFTSETUP) {
 399                 qeth_l2_process_vlans(card, 1);
 400                 if (!card->use_hard_stop ||
 401                         recovery_mode)
 402                         qeth_l2_del_all_mc(card);
 403                 qeth_clear_ipacmd_list(card);
 404                 card->state = CARD_STATE_HARDSETUP;
 405         }
 406         if (card->state == CARD_STATE_HARDSETUP) {
 407                 qeth_qdio_clear_card(card, 0);
 408                 qeth_clear_qdio_buffers(card);
 409                 qeth_clear_working_pool_list(card);
 410                 card->state = CARD_STATE_DOWN;
 411         }
 412         if (card->state == CARD_STATE_DOWN) {
 413                 qeth_clear_cmd_buffers(&card->read);
 414                 qeth_clear_cmd_buffers(&card->write);
 415         }
 416         card->use_hard_stop = 0;
 417         return rc;
 418 }
 419
 420 static void qeth_l2_process_inbound_buffer(struct qeth_card *card,
 421                             struct qeth_qdio_buffer *buf, int index)
 422 {
 423         struct qdio_buffer_element *element;
 424         struct sk_buff *skb;
 425         struct qeth_hdr *hdr;
 426         int offset;
 427         unsigned int len;
 428
 429         /* get first element of current buffer */
 430         element = (struct qdio_buffer_element *)&buf->buffer->element[0];
 431         offset = 0;
 432         if (card->options.performance_stats)
 433                 card->perf_stats.bufs_rec++;
 434         while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element,
 435                                        &offset, &hdr))) {
 436                 skb->dev = card->dev;
 437                 /* is device UP ? */
 438                 if (!(card->dev->flags & IFF_UP)) {
 439                         dev_kfree_skb_any(skb);
 440                         continue;
 441                 }
 442
 443                 switch (hdr->hdr.l2.id) {
 444                 case QETH_HEADER_TYPE_LAYER2:
 445                         skb->pkt_type = PACKET_HOST;
 446                         skb->protocol = eth_type_trans(skb, skb->dev);
 447                         if (card->options.checksum_type == NO_CHECKSUMMING)
 448                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 449                         else
 450                                 skb->ip_summed = CHECKSUM_NONE;
 451                         if (skb->protocol == htons(ETH_P_802_2))
 452                                 *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
 453                         len = skb->len;
 454                         netif_rx(skb);
 455                         break;
 456                 case QETH_HEADER_TYPE_OSN:
 457                         if (card->info.type == QETH_CARD_TYPE_OSN) {
 458                                 skb_push(skb, sizeof(struct qeth_hdr));
 459                                 skb_copy_to_linear_data(skb, hdr,
 460                                                 sizeof(struct qeth_hdr));
 461                                 len = skb->len;
 462                                 card->osn_info.data_cb(skb);
 463                                 break;
 464                         }
 465                         /* else unknown */
 466                 default:
 467                         dev_kfree_skb_any(skb);
 468                         QETH_DBF_TEXT(TRACE, 3, "inbunkno");
 469                         QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
 470                         continue;
 471                 }
 472                 card->dev->last_rx = jiffies;
 473                 card->stats.rx_packets++;
 474                 card->stats.rx_bytes += len;
 475         }
 476 }
 477
 478 static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
 479                            enum qeth_ipa_cmds ipacmd,
 480                            int (*reply_cb) (struct qeth_card *,
 481                                             struct qeth_reply*,
 482                                             unsigned long))
 483 {
 484         struct qeth_ipa_cmd *cmd;
 485         struct qeth_cmd_buffer *iob;
 486
 487         QETH_DBF_TEXT(TRACE, 2, "L2sdmac");
 488         iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
 489         cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
 490         cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
 491         memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
 492         return qeth_send_ipa_cmd(card, iob, reply_cb, NULL);
 493 }
 494
 495 static int qeth_l2_send_setmac_cb(struct qeth_card *card,
 496                            struct qeth_reply *reply,
 497                            unsigned long data)
 498 {
 499         struct qeth_ipa_cmd *cmd;
 500
 501         QETH_DBF_TEXT(TRACE, 2, "L2Smaccb");
 502         cmd = (struct qeth_ipa_cmd *) data;
 503         if (cmd->hdr.return_code) {
 504                 QETH_DBF_TEXT_(TRACE, 2, "L2er%x", cmd->hdr.return_code);
 505                 card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 506                 switch (cmd->hdr.return_code) {
 507                 case IPA_RC_L2_DUP_MAC:
 508                 case IPA_RC_L2_DUP_LAYER3_MAC:
 509                         dev_warn(&card->gdev->dev,
 510                                 "MAC address "
 511                                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
 512                                 "already exists\n",
 513                                 card->dev->dev_addr[0], card->dev->dev_addr[1],
 514                                 card->dev->dev_addr[2], card->dev->dev_addr[3],
 515                                 card->dev->dev_addr[4], card->dev->dev_addr[5]);
 516                         break;
 517                 case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
 518                 case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
 519                         dev_warn(&card->gdev->dev,
 520                                 "MAC address "
 521                                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
 522                                 "is not authorized\n",
 523                                 card->dev->dev_addr[0], card->dev->dev_addr[1],
 524                                 card->dev->dev_addr[2], card->dev->dev_addr[3],
 525                                 card->dev->dev_addr[4], card->dev->dev_addr[5]);
 526                         break;
 527                 default:
 528                         break;
 529                 }
 530                 cmd->hdr.return_code = -EIO;
 531         } else {
 532                 card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
 533                 memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac,
 534                        OSA_ADDR_LEN);
 535                 dev_info(&card->gdev->dev,
 536                         "MAC address %2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x "
 537                         "successfully registered on device %s\n",
 538                         card->dev->dev_addr[0], card->dev->dev_addr[1],
 539                         card->dev->dev_addr[2], card->dev->dev_addr[3],
 540                         card->dev->dev_addr[4], card->dev->dev_addr[5],
 541                         card->dev->name);
 542         }
 543         return 0;
 544 }
 545
 546 static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
 547 {
 548         QETH_DBF_TEXT(TRACE, 2, "L2Setmac");
 549         return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC,
 550                                           qeth_l2_send_setmac_cb);
 551 }
 552
 553 static int qeth_l2_send_delmac_cb(struct qeth_card *card,
 554                            struct qeth_reply *reply,
 555                            unsigned long data)
 556 {
 557         struct qeth_ipa_cmd *cmd;
 558
 559         QETH_DBF_TEXT(TRACE, 2, "L2Dmaccb");
 560         cmd = (struct qeth_ipa_cmd *) data;
 561         if (cmd->hdr.return_code) {
 562                 QETH_DBF_TEXT_(TRACE, 2, "err%d", cmd->hdr.return_code);
 563                 cmd->hdr.return_code = -EIO;
 564                 return 0;
 565         }
 566         card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
 567
 568         return 0;
 569 }
 570
 571 static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
 572 {
 573         QETH_DBF_TEXT(TRACE, 2, "L2Delmac");
 574         if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
 575                 return 0;
 576         return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC,
 577                                           qeth_l2_send_delmac_cb);
 578 }
 579
 580 static int qeth_l2_request_initial_mac(struct qeth_card *card)
 581 {
 582         int rc = 0;
 583         char vendor_pre[] = {0x02, 0x00, 0x00};
 584
 585         QETH_DBF_TEXT(SETUP, 2, "doL2init");
 586         QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));
 587
 588         rc = qeth_query_setadapterparms(card);
 589         if (rc) {
 590                 QETH_DBF_MESSAGE(2, "could not query adapter parameters on "
 591                         "device %s: x%x\n", CARD_BUS_ID(card), rc);
 592         }
 593
 594         if ((card->info.type == QETH_CARD_TYPE_IQD) ||
 595             (card->info.guestlan)) {
 596                 rc = qeth_setadpparms_change_macaddr(card);
 597                 if (rc) {
 598                         QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
 599                                 "device %s: x%x\n", CARD_BUS_ID(card), rc);
 600                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 601                         return rc;
 602                 }
 603                 QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
 604         } else {
 605                 random_ether_addr(card->dev->dev_addr);
 606                 memcpy(card->dev->dev_addr, vendor_pre, 3);
 607         }
 608         return 0;
 609 }
 610
 611 static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
 612 {
 613         struct sockaddr *addr = p;
 614         struct qeth_card *card = dev->ml_priv;
 615         int rc = 0;
 616
 617         QETH_DBF_TEXT(TRACE, 3, "setmac");
 618
 619         if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
 620                 QETH_DBF_TEXT(TRACE, 3, "setmcINV");
 621                 return -EOPNOTSUPP;
 622         }
 623
 624         if (card->info.type == QETH_CARD_TYPE_OSN) {
 625                 QETH_DBF_TEXT(TRACE, 3, "setmcOSN");
 626                 return -EOPNOTSUPP;
 627         }
 628         QETH_DBF_TEXT_(TRACE, 3, "%s", CARD_BUS_ID(card));
 629         QETH_DBF_HEX(TRACE, 3, addr->sa_data, OSA_ADDR_LEN);
 630         if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
 631                 QETH_DBF_TEXT(TRACE, 3, "setmcREC");
 632                 return -ERESTARTSYS;
 633         }
 634         rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
 635         if (!rc)
 636                 rc = qeth_l2_send_setmac(card, addr->sa_data);
 637         return rc;
 638 }
 639
 640 static void qeth_l2_set_multicast_list(struct net_device *dev)
 641 {
 642         struct qeth_card *card = dev->ml_priv;
 643         struct dev_addr_list *dm;
 644         struct netdev_hw_addr *ha;
 645
 646         if (card->info.type == QETH_CARD_TYPE_OSN)
 647                 return ;
 648
 649         QETH_DBF_TEXT(TRACE, 3, "setmulti");
 650         if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
 651             (card->state != CARD_STATE_UP))
 652                 return;
 653         qeth_l2_del_all_mc(card);
 654         spin_lock_bh(&card->mclock);
 655         for (dm = dev->mc_list; dm; dm = dm->next)
 656                 qeth_l2_add_mc(card, dm->da_addr, 0);
 657
 658         list_for_each_entry(ha, &dev->uc.list, list)
 659                 qeth_l2_add_mc(card, ha->addr, 1);
 660
 661         spin_unlock_bh(&card->mclock);
 662         if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
 663                 return;
 664         qeth_setadp_promisc_mode(card);
 665 }
 666
 667 static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 668 {
 669         int rc;
 670         struct qeth_hdr *hdr = NULL;
 671         int elements = 0;
 672         struct qeth_card *card = dev->ml_priv;
 673         struct sk_buff *new_skb = skb;
 674         int ipv = qeth_get_ip_version(skb);
 675         int cast_type = qeth_get_cast_type(card, skb);
 676         struct qeth_qdio_out_q *queue = card->qdio.out_qs
 677                 [qeth_get_priority_queue(card, skb, ipv, cast_type)];
 678         int tx_bytes = skb->len;
 679         int data_offset = -1;
 680         int elements_needed = 0;
 681         int hd_len = 0;
 682
 683         if ((card->state != CARD_STATE_UP) || !card->lan_online) {
 684                 card->stats.tx_carrier_errors++;
 685                 goto tx_drop;
 686         }
 687
 688         if ((card->info.type == QETH_CARD_TYPE_OSN) &&
 689             (skb->protocol == htons(ETH_P_IPV6)))
 690                 goto tx_drop;
 691
 692         if (card->options.performance_stats) {
 693                 card->perf_stats.outbound_cnt++;
 694                 card->perf_stats.outbound_start_time = qeth_get_micros();
 695         }
 696         netif_stop_queue(dev);
 697
 698         if (card->info.type == QETH_CARD_TYPE_OSN)
 699                 hdr = (struct qeth_hdr *)skb->data;
 700         else {
 701                 if (card->info.type == QETH_CARD_TYPE_IQD) {
 702                         new_skb = skb;
 703                         data_offset = ETH_HLEN;
 704                         hd_len = ETH_HLEN;
 705                         hdr = kmem_cache_alloc(qeth_core_header_cache,
 706                                                 GFP_ATOMIC);
 707                         if (!hdr)
 708                                 goto tx_drop;
 709                         elements_needed++;
 710                         skb_reset_mac_header(new_skb);
 711                         qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
 712                         hdr->hdr.l2.pkt_length = new_skb->len;
 713                         memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
 714                                 skb_mac_header(new_skb), ETH_HLEN);
 715                 } else {
 716                         /* create a clone with writeable headroom */
 717                         new_skb = skb_realloc_headroom(skb,
 718                                                 sizeof(struct qeth_hdr));
 719                         if (!new_skb)
 720                                 goto tx_drop;
 721                         hdr = (struct qeth_hdr *)skb_push(new_skb,
 722                                                 sizeof(struct qeth_hdr));
 723                         skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
 724                         qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type);
 725                 }
 726         }
 727
 728         elements = qeth_get_elements_no(card, (void *)hdr, new_skb,
 729                                                 elements_needed);
 730         if (!elements) {
 731                 if (data_offset >= 0)
 732                         kmem_cache_free(qeth_core_header_cache, hdr);
 733                 goto tx_drop;
 734         }
 735
 736         if (card->info.type != QETH_CARD_TYPE_IQD)
 737                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,
 738                                          elements);
 739         else
 740                 rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
 741                                         elements, data_offset, hd_len);
 742         if (!rc) {
 743                 card->stats.tx_packets++;
 744                 card->stats.tx_bytes += tx_bytes;
 745                 if (new_skb != skb)
 746                         dev_kfree_skb_any(skb);
 747         } else {
 748                 if (data_offset >= 0)
 749                         kmem_cache_free(qeth_core_header_cache, hdr);
 750
 751                 if (rc == -EBUSY) {
 752                         if (new_skb != skb)
 753                                 dev_kfree_skb_any(new_skb);
 754                         return NETDEV_TX_BUSY;
 755                 } else
 756                         goto tx_drop;
 757         }
 758
 759         netif_wake_queue(dev);
 760         if (card->options.performance_stats)
 761                 card->perf_stats.outbound_time += qeth_get_micros() -
 762                         card->perf_stats.outbound_start_time;
 763         return rc;
 764
 765 tx_drop:
 766         card->stats.tx_dropped++;
 767         card->stats.tx_errors++;
 768         if ((new_skb != skb) && new_skb)
 769                 dev_kfree_skb_any(new_skb);
 770         dev_kfree_skb_any(skb);
 771         netif_wake_queue(dev);
 772         return NETDEV_TX_OK;
 773 }
 774
 775 static void qeth_l2_qdio_input_handler(struct ccw_device *ccwdev,
 776                         unsigned int qdio_err, unsigned int queue,
 777                         int first_element, int count, unsigned long card_ptr)
 778 {
 779         struct net_device *net_dev;
 780         struct qeth_card *card;
 781         struct qeth_qdio_buffer *buffer;
 782         int index;
 783         int i;
 784
 785         card = (struct qeth_card *) card_ptr;
 786         net_dev = card->dev;
 787         if (card->options.performance_stats) {
 788                 card->perf_stats.inbound_cnt++;
 789                 card->perf_stats.inbound_start_time = qeth_get_micros();
 790         }
 791         if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) {
 792                 QETH_DBF_TEXT(TRACE, 1, "qdinchk");
 793                 QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card));
 794                 QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element,
 795                                 count);
 796                 QETH_DBF_TEXT_(TRACE, 1, "%04X", queue);
 797                 qeth_schedule_recovery(card);
 798                 return;
 799         }
 800         for (i = first_element; i < (first_element + count); ++i) {
 801                 index = i % QDIO_MAX_BUFFERS_PER_Q;
 802                 buffer = &card->qdio.in_q->bufs[index];
 803                 if (!(qdio_err &&
 804                       qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr")))
 805                         qeth_l2_process_inbound_buffer(card, buffer, index);
 806                 /* clear buffer and give back to hardware */
 807                 qeth_put_buffer_pool_entry(card, buffer->pool_entry);
 808                 qeth_queue_input_buffer(card, index);
 809         }
 810         if (card->options.performance_stats)
 811                 card->perf_stats.inbound_time += qeth_get_micros() -
 812                         card->perf_stats.inbound_start_time;
 813 }
 814
 815 static int qeth_l2_open(struct net_device *dev)
 816 {
 817         struct qeth_card *card = dev->ml_priv;
 818
 819         QETH_DBF_TEXT(TRACE, 4, "qethopen");
 820         if (card->state != CARD_STATE_SOFTSETUP)
 821                 return -ENODEV;
 822
 823         if ((card->info.type != QETH_CARD_TYPE_OSN) &&
 824              (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
 825                 QETH_DBF_TEXT(TRACE, 4, "nomacadr");
 826                 return -EPERM;
 827         }
 828         card->data.state = CH_STATE_UP;
 829         card->state = CARD_STATE_UP;
 830         netif_start_queue(dev);
 831
 832         if (!card->lan_online && netif_carrier_ok(dev))
 833                 netif_carrier_off(dev);
 834         return 0;
 835 }
 836
 837
 838 static int qeth_l2_stop(struct net_device *dev)
 839 {
 840         struct qeth_card *card = dev->ml_priv;
 841
 842         QETH_DBF_TEXT(TRACE, 4, "qethstop");
 843         netif_tx_disable(dev);
 844         if (card->state == CARD_STATE_UP)
 845                 card->state = CARD_STATE_SOFTSETUP;
 846         return 0;
 847 }
 848
 849 static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
 850 {
 851         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 852
 853         INIT_LIST_HEAD(&card->vid_list);
 854         INIT_LIST_HEAD(&card->mc_list);
 855         card->options.layer2 = 1;
 856         card->discipline.input_handler = (qdio_handler_t *)
 857                 qeth_l2_qdio_input_handler;
 858         card->discipline.output_handler = (qdio_handler_t *)
 859                 qeth_qdio_output_handler;
 860         card->discipline.recover = qeth_l2_recover;
 861         return 0;
 862 }
 863
 864 static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
 865 {
 866         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
 867
 868         qeth_set_allowed_threads(card, 0, 1);
 869         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
 870
 871         if (cgdev->state == CCWGROUP_ONLINE) {
 872                 card->use_hard_stop = 1;
 873                 qeth_l2_set_offline(cgdev);
 874         }
 875
 876         if (card->dev) {
 877                 unregister_netdev(card->dev);
 878                 card->dev = NULL;
 879         }
 880
 881         qeth_l2_del_all_mc(card);
 882         return;
 883 }
 884
 885 static struct ethtool_ops qeth_l2_ethtool_ops = {
 886         .get_link = ethtool_op_get_link,
 887         .get_strings = qeth_core_get_strings,
 888         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 889         .get_stats_count = qeth_core_get_stats_count,
 890         .get_drvinfo = qeth_core_get_drvinfo,
 891         .get_settings = qeth_core_ethtool_get_settings,
 892 };
 893
 894 static struct ethtool_ops qeth_l2_osn_ops = {
 895         .get_strings = qeth_core_get_strings,
 896         .get_ethtool_stats = qeth_core_get_ethtool_stats,
 897         .get_stats_count = qeth_core_get_stats_count,
 898         .get_drvinfo = qeth_core_get_drvinfo,
 899 };
 900
 901 static const struct net_device_ops qeth_l2_netdev_ops = {
 902         .ndo_open               = qeth_l2_open,
 903         .ndo_stop               = qeth_l2_stop,
 904         .ndo_get_stats          = qeth_get_stats,
 905         .ndo_start_xmit         = qeth_l2_hard_start_xmit,
 906         .ndo_validate_addr      = eth_validate_addr,
 907         .ndo_set_multicast_list = qeth_l2_set_multicast_list,
 908         .ndo_do_ioctl           = qeth_l2_do_ioctl,
 909         .ndo_set_mac_address    = qeth_l2_set_mac_address,
 910         .ndo_change_mtu         = qeth_change_mtu,
 911         .ndo_vlan_rx_add_vid    = qeth_l2_vlan_rx_add_vid,
 912         .ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
 913         .ndo_tx_timeout         = qeth_tx_timeout,
 914 };
 915
 916 static int qeth_l2_setup_netdev(struct qeth_card *card)
 917 {
 918         switch (card->info.type) {
 919         case QETH_CARD_TYPE_OSAE:
 920                 card->dev = alloc_etherdev(0);
 921                 break;
 922         case QETH_CARD_TYPE_IQD:
 923                 card->dev = alloc_netdev(0, "hsi%d", ether_setup);
 924                 break;
 925         case QETH_CARD_TYPE_OSN:
 926                 card->dev = alloc_netdev(0, "osn%d", ether_setup);
 927                 card->dev->flags |= IFF_NOARP;
 928                 break;
 929         default:
 930                 card->dev = alloc_etherdev(0);
 931         }
 932
 933         if (!card->dev)
 934                 return -ENODEV;
 935
 936         card->dev->ml_priv = card;
 937         card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
 938         card->dev->mtu = card->info.initial_mtu;
 939         card->dev->netdev_ops = &qeth_l2_netdev_ops;
 940         if (card->info.type != QETH_CARD_TYPE_OSN)
 941                 SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops);
 942         else
 943                 SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops);
 944         card->dev->features |= NETIF_F_HW_VLAN_FILTER;
 945         card->info.broadcast_capable = 1;
 946         qeth_l2_request_initial_mac(card);
 947         SET_NETDEV_DEV(card->dev, &card->gdev->dev);
 948         return register_netdev(card->dev);
 949 }
 950
 951 static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
 952 {
 953         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
 954         int rc = 0;
 955         enum qeth_card_states recover_flag;
 956
 957         BUG_ON(!card);
 958         QETH_DBF_TEXT(SETUP, 2, "setonlin");
 959         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
 960
 961         qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1);
 962         recover_flag = card->state;
 963         rc = ccw_device_set_online(CARD_RDEV(card));
 964         if (rc) {
 965                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 966                 return -EIO;
 967         }
 968         rc = ccw_device_set_online(CARD_WDEV(card));
 969         if (rc) {
 970                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 971                 return -EIO;
 972         }
 973         rc = ccw_device_set_online(CARD_DDEV(card));
 974         if (rc) {
 975                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 976                 return -EIO;
 977         }
 978
 979         rc = qeth_core_hardsetup_card(card);
 980         if (rc) {
 981                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
 982                 goto out_remove;
 983         }
 984
 985         if (!card->dev && qeth_l2_setup_netdev(card))
 986                 goto out_remove;
 987
 988         if (card->info.type != QETH_CARD_TYPE_OSN)
 989                 qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);
 990
 991         card->state = CARD_STATE_HARDSETUP;
 992         qeth_print_status_message(card);
 993
 994         /* softsetup */
 995         QETH_DBF_TEXT(SETUP, 2, "softsetp");
 996
 997         rc = qeth_send_startlan(card);
 998         if (rc) {
 999                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1000                 if (rc == 0xe080) {
1001                         dev_warn(&card->gdev->dev,
1002                                 "The LAN is offline\n");
1003                         card->lan_online = 0;
1004                         return 0;
1005                 }
1006                 goto out_remove;
1007         } else
1008                 card->lan_online = 1;
1009
1010         if (card->info.type != QETH_CARD_TYPE_OSN) {
1011                 qeth_set_large_send(card, card->options.large_send);
1012                 qeth_l2_process_vlans(card, 0);
1013         }
1014
1015         netif_tx_disable(card->dev);
1016
1017         rc = qeth_init_qdio_queues(card);
1018         if (rc) {
1019                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
1020                 goto out_remove;
1021         }
1022         card->state = CARD_STATE_SOFTSETUP;
1023         netif_carrier_on(card->dev);
1024
1025         qeth_set_allowed_threads(card, 0xffffffff, 0);
1026         if (recover_flag == CARD_STATE_RECOVER) {
1027                 if (recovery_mode &&
1028                     card->info.type != QETH_CARD_TYPE_OSN) {
1029                         qeth_l2_open(card->dev);
1030                 } else {
1031                         rtnl_lock();
1032                         dev_open(card->dev);
1033                         rtnl_unlock();
1034                 }
1035                 /* this also sets saved unicast addresses */
1036                 qeth_l2_set_multicast_list(card->dev);
1037         }
1038         /* let user_space know that device is online */
1039         kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
1040         return 0;
1041 out_remove:
1042         card->use_hard_stop = 1;
1043         qeth_l2_stop_card(card, 0);
1044         ccw_device_set_offline(CARD_DDEV(card));
1045         ccw_device_set_offline(CARD_WDEV(card));
1046         ccw_device_set_offline(CARD_RDEV(card));
1047         if (recover_flag == CARD_STATE_RECOVER)
1048                 card->state = CARD_STATE_RECOVER;
1049         else
1050                 card->state = CARD_STATE_DOWN;
1051         return -ENODEV;
1052 }
1053
1054 static int qeth_l2_set_online(struct ccwgroup_device *gdev)
1055 {
1056         return __qeth_l2_set_online(gdev, 0);
1057 }
1058
1059 static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
1060                                         int recovery_mode)
1061 {
1062         struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
1063         int rc = 0, rc2 = 0, rc3 = 0;
1064         enum qeth_card_states recover_flag;
1065
1066         QETH_DBF_TEXT(SETUP, 3, "setoffl");
1067         QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
1068
1069         if (card->dev && netif_carrier_ok(card->dev))
1070                 netif_carrier_off(card->dev);
1071         recover_flag = card->state;
1072         qeth_l2_stop_card(card, recovery_mode);
1073         rc  = ccw_device_set_offline(CARD_DDEV(card));
1074         rc2 = ccw_device_set_offline(CARD_WDEV(card));
1075         rc3 = ccw_device_set_offline(CARD_RDEV(card));
1076         if (!rc)
1077                 rc = (rc2) ? rc2 : rc3;
1078         if (rc)
1079                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1080         if (recover_flag == CARD_STATE_UP)
1081                 card->state = CARD_STATE_RECOVER;
1082         /* let user_space know that device is offline */
1083         kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
1084         return 0;
1085 }
1086
1087 static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
1088 {
1089         return __qeth_l2_set_offline(cgdev, 0);
1090 }
1091
1092 static int qeth_l2_recover(void *ptr)
1093 {
1094         struct qeth_card *card;
1095         int rc = 0;
1096
1097         card = (struct qeth_card *) ptr;
1098         QETH_DBF_TEXT(TRACE, 2, "recover1");
1099         QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *));
1100         if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
1101                 return 0;
1102         QETH_DBF_TEXT(TRACE, 2, "recover2");
1103         dev_warn(&card->gdev->dev,
1104                 "A recovery process has been started for the device\n");
1105         card->use_hard_stop = 1;
1106         __qeth_l2_set_offline(card->gdev, 1);
1107         rc = __qeth_l2_set_online(card->gdev, 1);
1108         /* don't run another scheduled recovery */
1109         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1110         qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
1111         if (!rc)
1112                 dev_info(&card->gdev->dev,
1113                         "Device successfully recovered!\n");
1114         else {
1115                 if (card->dev) {
1116                         rtnl_lock();
1117                         dev_close(card->dev);
1118                         rtnl_unlock();
1119                 }
1120                 dev_warn(&card->gdev->dev, "The qeth device driver "
1121                         "failed to recover an error on the device\n");
1122         }
1123         return 0;
1124 }
1125
1126 static int __init qeth_l2_init(void)
1127 {
1128         pr_info("register layer 2 discipline\n");
1129         return 0;
1130 }
1131
1132 static void __exit qeth_l2_exit(void)
1133 {
1134         pr_info("unregister layer 2 discipline\n");
1135 }
1136
1137 static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
1138 {
1139         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1140         qeth_qdio_clear_card(card, 0);
1141         qeth_clear_qdio_buffers(card);
1142 }
1143
1144 static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
1145 {
1146         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1147
1148         if (card->dev)
1149                 netif_device_detach(card->dev);
1150         qeth_set_allowed_threads(card, 0, 1);
1151         wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
1152         if (gdev->state == CCWGROUP_OFFLINE)
1153                 return 0;
1154         if (card->state == CARD_STATE_UP) {
1155                 card->use_hard_stop = 1;
1156                 __qeth_l2_set_offline(card->gdev, 1);
1157         } else
1158                 __qeth_l2_set_offline(card->gdev, 0);
1159         return 0;
1160 }
1161
1162 static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
1163 {
1164         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
1165         int rc = 0;
1166
1167         if (gdev->state == CCWGROUP_OFFLINE)
1168                 goto out;
1169
1170         if (card->state == CARD_STATE_RECOVER) {
1171                 rc = __qeth_l2_set_online(card->gdev, 1);
1172                 if (rc) {
1173                         if (card->dev) {
1174                                 rtnl_lock();
1175                                 dev_close(card->dev);
1176                                 rtnl_unlock();
1177                         }
1178                 }
1179         } else
1180                 rc = __qeth_l2_set_online(card->gdev, 0);
1181 out:
1182         qeth_set_allowed_threads(card, 0xffffffff, 0);
1183         if (card->dev)
1184                 netif_device_attach(card->dev);
1185         if (rc)
1186                 dev_warn(&card->gdev->dev, "The qeth device driver "
1187                         "failed to recover an error on the device\n");
1188         return rc;
1189 }
1190
1191 struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
1192         .probe = qeth_l2_probe_device,
1193         .remove = qeth_l2_remove_device,
1194         .set_online = qeth_l2_set_online,
1195         .set_offline = qeth_l2_set_offline,
1196         .shutdown = qeth_l2_shutdown,
1197         .freeze = qeth_l2_pm_suspend,
1198         .thaw = qeth_l2_pm_resume,
1199         .restore = qeth_l2_pm_resume,
1200 };
1201 EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);
1202
1203 static int qeth_osn_send_control_data(struct qeth_card *card, int len,
1204                            struct qeth_cmd_buffer *iob)
1205 {
1206         unsigned long flags;
1207         int rc = 0;
1208
1209         QETH_DBF_TEXT(TRACE, 5, "osndctrd");
1210
1211         wait_event(card->wait_q,
1212                    atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
1213         qeth_prepare_control_data(card, len, iob);
1214         QETH_DBF_TEXT(TRACE, 6, "osnoirqp");
1215         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
1216         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
1217                               (addr_t) iob, 0, 0);
1218         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
1219         if (rc) {
1220                 QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
1221                            "ccw_device_start rc = %i\n", rc);
1222                 QETH_DBF_TEXT_(TRACE, 2, " err%d", rc);
1223                 qeth_release_buffer(iob->channel, iob);
1224                 atomic_set(&card->write.irq_pending, 0);
1225                 wake_up(&card->wait_q);
1226         }
1227         return rc;
1228 }
1229
1230 static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
1231                         struct qeth_cmd_buffer *iob, int data_len)
1232 {
1233         u16 s1, s2;
1234
1235         QETH_DBF_TEXT(TRACE, 4, "osndipa");
1236
1237         qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
1238         s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
1239         s2 = (u16)data_len;
1240         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
1241         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
1242         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
1243         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
1244         return qeth_osn_send_control_data(card, s1, iob);
1245 }
1246
1247 int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
1248 {
1249         struct qeth_cmd_buffer *iob;
1250         struct qeth_card *card;
1251         int rc;
1252
1253         QETH_DBF_TEXT(TRACE, 2, "osnsdmc");
1254         if (!dev)
1255                 return -ENODEV;
1256         card = dev->ml_priv;
1257         if (!card)
1258                 return -ENODEV;
1259         if ((card->state != CARD_STATE_UP) &&
1260             (card->state != CARD_STATE_SOFTSETUP))
1261                 return -ENODEV;
1262         iob = qeth_wait_for_buffer(&card->write);
1263         memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
1264         rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
1265         return rc;
1266 }
1267 EXPORT_SYMBOL(qeth_osn_assist);
1268
1269 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
1270                   int (*assist_cb)(struct net_device *, void *),
1271                   int (*data_cb)(struct sk_buff *))
1272 {
1273         struct qeth_card *card;
1274
1275         QETH_DBF_TEXT(TRACE, 2, "osnreg");
1276         *dev = qeth_l2_netdev_by_devno(read_dev_no);
1277         if (*dev == NULL)
1278                 return -ENODEV;
1279         card = (*dev)->ml_priv;
1280         if (!card)
1281                 return -ENODEV;
1282         if ((assist_cb == NULL) || (data_cb == NULL))
1283                 return -EINVAL;
1284         card->osn_info.assist_cb = assist_cb;
1285         card->osn_info.data_cb = data_cb;
1286         return 0;
1287 }
1288 EXPORT_SYMBOL(qeth_osn_register);
1289
1290 void qeth_osn_deregister(struct net_device *dev)
1291 {
1292         struct qeth_card *card;
1293
1294         QETH_DBF_TEXT(TRACE, 2, "osndereg");
1295         if (!dev)
1296                 return;
1297         card = dev->ml_priv;
1298         if (!card)
1299                 return;
1300         card->osn_info.assist_cb = NULL;
1301         card->osn_info.data_cb = NULL;
1302         return;
1303 }
1304 EXPORT_SYMBOL(qeth_osn_deregister);
1305
1306 module_init(qeth_l2_init);
1307 module_exit(qeth_l2_exit);
1308 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
1309 MODULE_DESCRIPTION("qeth layer 2 discipline");
1310 MODULE_LICENSE("GPL");