kernel/2.6.29.6-aldebaran-rt/drivers/net/wireless/libertas/cmdresp.c

   1 /**
   2   * This file contains the handling of command
   3   * responses as well as events generated by firmware.
   4   */
   5 #include <linux/delay.h>
   6 #include <linux/if_arp.h>
   7 #include <linux/netdevice.h>
   8
   9 #include <net/iw_handler.h>
  10
  11 #include "host.h"
  12 #include "decl.h"
  13 #include "defs.h"
  14 #include "dev.h"
  15 #include "assoc.h"
  16 #include "wext.h"
  17
  18 /**
  19  *  @brief This function handles disconnect event. it
  20  *  reports disconnect to upper layer, clean tx/rx packets,
  21  *  reset link state etc.
  22  *
  23  *  @param priv    A pointer to struct lbs_private structure
  24  *  @return        n/a
  25  */
  26 void lbs_mac_event_disconnected(struct lbs_private *priv)
  27 {
  28         union iwreq_data wrqu;
  29
  30         if (priv->connect_status != LBS_CONNECTED)
  31                 return;
  32
  33         lbs_deb_enter(LBS_DEB_ASSOC);
  34
  35         memset(wrqu.ap_addr.sa_data, 0x00, ETH_ALEN);
  36         wrqu.ap_addr.sa_family = ARPHRD_ETHER;
  37
  38         /*
  39          * Cisco AP sends EAP failure and de-auth in less than 0.5 ms.
  40          * It causes problem in the Supplicant
  41          */
  42
  43         msleep_interruptible(1000);
  44         wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
  45
  46         /* report disconnect to upper layer */
  47         netif_stop_queue(priv->dev);
  48         netif_carrier_off(priv->dev);
  49
  50         /* Free Tx and Rx packets */
  51         kfree_skb(priv->currenttxskb);
  52         priv->currenttxskb = NULL;
  53         priv->tx_pending_len = 0;
  54
  55         /* reset SNR/NF/RSSI values */
  56         memset(priv->SNR, 0x00, sizeof(priv->SNR));
  57         memset(priv->NF, 0x00, sizeof(priv->NF));
  58         memset(priv->RSSI, 0x00, sizeof(priv->RSSI));
  59         memset(priv->rawSNR, 0x00, sizeof(priv->rawSNR));
  60         memset(priv->rawNF, 0x00, sizeof(priv->rawNF));
  61         priv->nextSNRNF = 0;
  62         priv->numSNRNF = 0;
  63         priv->connect_status = LBS_DISCONNECTED;
  64
  65         /* Clear out associated SSID and BSSID since connection is
  66          * no longer valid.
  67          */
  68         memset(&priv->curbssparams.bssid, 0, ETH_ALEN);
  69         memset(&priv->curbssparams.ssid, 0, IW_ESSID_MAX_SIZE);
  70         priv->curbssparams.ssid_len = 0;
  71
  72         if (priv->psstate != PS_STATE_FULL_POWER) {
  73                 /* make firmware to exit PS mode */
  74                 lbs_deb_cmd("disconnected, so exit PS mode\n");
  75                 lbs_ps_wakeup(priv, 0);
  76         }
  77         lbs_deb_leave(LBS_DEB_ASSOC);
  78 }
  79
  80 /**
  81  *  @brief This function handles MIC failure event.
  82  *
  83  *  @param priv    A pointer to struct lbs_private structure
  84  *  @para  event   the event id
  85  *  @return        n/a
  86  */
  87 static void handle_mic_failureevent(struct lbs_private *priv, u32 event)
  88 {
  89         char buf[50];
  90
  91         lbs_deb_enter(LBS_DEB_CMD);
  92         memset(buf, 0, sizeof(buf));
  93
  94         sprintf(buf, "%s", "MLME-MICHAELMICFAILURE.indication ");
  95
  96         if (event == MACREG_INT_CODE_MIC_ERR_UNICAST) {
  97                 strcat(buf, "unicast ");
  98         } else {
  99                 strcat(buf, "multicast ");
 100         }
 101
 102         lbs_send_iwevcustom_event(priv, buf);
 103         lbs_deb_leave(LBS_DEB_CMD);
 104 }
 105
 106 static int lbs_ret_reg_access(struct lbs_private *priv,
 107                                u16 type, struct cmd_ds_command *resp)
 108 {
 109         int ret = 0;
 110
 111         lbs_deb_enter(LBS_DEB_CMD);
 112
 113         switch (type) {
 114         case CMD_RET(CMD_MAC_REG_ACCESS):
 115                 {
 116                         struct cmd_ds_mac_reg_access *reg = &resp->params.macreg;
 117
 118                         priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
 119                         priv->offsetvalue.value = le32_to_cpu(reg->value);
 120                         break;
 121                 }
 122
 123         case CMD_RET(CMD_BBP_REG_ACCESS):
 124                 {
 125                         struct cmd_ds_bbp_reg_access *reg = &resp->params.bbpreg;
 126
 127                         priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
 128                         priv->offsetvalue.value = reg->value;
 129                         break;
 130                 }
 131
 132         case CMD_RET(CMD_RF_REG_ACCESS):
 133                 {
 134                         struct cmd_ds_rf_reg_access *reg = &resp->params.rfreg;
 135
 136                         priv->offsetvalue.offset = (u32)le16_to_cpu(reg->offset);
 137                         priv->offsetvalue.value = reg->value;
 138                         break;
 139                 }
 140
 141         default:
 142                 ret = -1;
 143         }
 144
 145         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 146         return ret;
 147 }
 148
 149 static int lbs_ret_802_11_rssi(struct lbs_private *priv,
 150                                 struct cmd_ds_command *resp)
 151 {
 152         struct cmd_ds_802_11_rssi_rsp *rssirsp = &resp->params.rssirsp;
 153
 154         lbs_deb_enter(LBS_DEB_CMD);
 155
 156         /* store the non average value */
 157         priv->SNR[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->SNR);
 158         priv->NF[TYPE_BEACON][TYPE_NOAVG] = le16_to_cpu(rssirsp->noisefloor);
 159
 160         priv->SNR[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgSNR);
 161         priv->NF[TYPE_BEACON][TYPE_AVG] = le16_to_cpu(rssirsp->avgnoisefloor);
 162
 163         priv->RSSI[TYPE_BEACON][TYPE_NOAVG] =
 164             CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_NOAVG],
 165                      priv->NF[TYPE_BEACON][TYPE_NOAVG]);
 166
 167         priv->RSSI[TYPE_BEACON][TYPE_AVG] =
 168             CAL_RSSI(priv->SNR[TYPE_BEACON][TYPE_AVG] / AVG_SCALE,
 169                      priv->NF[TYPE_BEACON][TYPE_AVG] / AVG_SCALE);
 170
 171         lbs_deb_cmd("RSSI: beacon %d, avg %d\n",
 172                priv->RSSI[TYPE_BEACON][TYPE_NOAVG],
 173                priv->RSSI[TYPE_BEACON][TYPE_AVG]);
 174
 175         lbs_deb_leave(LBS_DEB_CMD);
 176         return 0;
 177 }
 178
 179 static int lbs_ret_802_11_bcn_ctrl(struct lbs_private * priv,
 180                                         struct cmd_ds_command *resp)
 181 {
 182         struct cmd_ds_802_11_beacon_control *bcn_ctrl =
 183             &resp->params.bcn_ctrl;
 184
 185         lbs_deb_enter(LBS_DEB_CMD);
 186
 187         if (bcn_ctrl->action == CMD_ACT_GET) {
 188                 priv->beacon_enable = (u8) le16_to_cpu(bcn_ctrl->beacon_enable);
 189                 priv->beacon_period = le16_to_cpu(bcn_ctrl->beacon_period);
 190         }
 191
 192         lbs_deb_enter(LBS_DEB_CMD);
 193         return 0;
 194 }
 195
 196 static inline int handle_cmd_response(struct lbs_private *priv,
 197                                       struct cmd_header *cmd_response)
 198 {
 199         struct cmd_ds_command *resp = (struct cmd_ds_command *) cmd_response;
 200         int ret = 0;
 201         unsigned long flags;
 202         uint16_t respcmd = le16_to_cpu(resp->command);
 203
 204         lbs_deb_enter(LBS_DEB_HOST);
 205
 206         switch (respcmd) {
 207         case CMD_RET(CMD_MAC_REG_ACCESS):
 208         case CMD_RET(CMD_BBP_REG_ACCESS):
 209         case CMD_RET(CMD_RF_REG_ACCESS):
 210                 ret = lbs_ret_reg_access(priv, respcmd, resp);
 211                 break;
 212
 213         case CMD_RET_802_11_ASSOCIATE:
 214         case CMD_RET(CMD_802_11_ASSOCIATE):
 215         case CMD_RET(CMD_802_11_REASSOCIATE):
 216                 ret = lbs_ret_80211_associate(priv, resp);
 217                 break;
 218
 219         case CMD_RET(CMD_802_11_SET_AFC):
 220         case CMD_RET(CMD_802_11_GET_AFC):
 221                 spin_lock_irqsave(&priv->driver_lock, flags);
 222                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.afc,
 223                         sizeof(struct cmd_ds_802_11_afc));
 224                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 225
 226                 break;
 227
 228         case CMD_RET(CMD_802_11_AUTHENTICATE):
 229         case CMD_RET(CMD_802_11_BEACON_STOP):
 230                 break;
 231
 232         case CMD_RET(CMD_802_11_RSSI):
 233                 ret = lbs_ret_802_11_rssi(priv, resp);
 234                 break;
 235
 236         case CMD_RET(CMD_802_11D_DOMAIN_INFO):
 237                 ret = lbs_ret_802_11d_domain_info(resp);
 238                 break;
 239
 240         case CMD_RET(CMD_802_11_TPC_CFG):
 241                 spin_lock_irqsave(&priv->driver_lock, flags);
 242                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
 243                         sizeof(struct cmd_ds_802_11_tpc_cfg));
 244                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 245                 break;
 246         case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
 247                 spin_lock_irqsave(&priv->driver_lock, flags);
 248                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.ledgpio,
 249                         sizeof(struct cmd_ds_802_11_led_ctrl));
 250                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 251                 break;
 252
 253         case CMD_RET(CMD_GET_TSF):
 254                 spin_lock_irqsave(&priv->driver_lock, flags);
 255                 memcpy((void *)priv->cur_cmd->callback_arg,
 256                        &resp->params.gettsf.tsfvalue, sizeof(u64));
 257                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 258                 break;
 259         case CMD_RET(CMD_BT_ACCESS):
 260                 spin_lock_irqsave(&priv->driver_lock, flags);
 261                 if (priv->cur_cmd->callback_arg)
 262                         memcpy((void *)priv->cur_cmd->callback_arg,
 263                                &resp->params.bt.addr1, 2 * ETH_ALEN);
 264                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 265                 break;
 266         case CMD_RET(CMD_FWT_ACCESS):
 267                 spin_lock_irqsave(&priv->driver_lock, flags);
 268                 if (priv->cur_cmd->callback_arg)
 269                         memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
 270                                sizeof(resp->params.fwt));
 271                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 272                 break;
 273         case CMD_RET(CMD_802_11_BEACON_CTRL):
 274                 ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
 275                 break;
 276
 277         default:
 278                 lbs_pr_err("CMD_RESP: unknown cmd response 0x%04x\n",
 279                            le16_to_cpu(resp->command));
 280                 break;
 281         }
 282         lbs_deb_leave(LBS_DEB_HOST);
 283         return ret;
 284 }
 285
 286 int lbs_process_command_response(struct lbs_private *priv, u8 *data, u32 len)
 287 {
 288         uint16_t respcmd, curcmd;
 289         struct cmd_header *resp;
 290         int ret = 0;
 291         unsigned long flags;
 292         uint16_t result;
 293
 294         lbs_deb_enter(LBS_DEB_HOST);
 295
 296         mutex_lock(&priv->lock);
 297         spin_lock_irqsave(&priv->driver_lock, flags);
 298
 299         if (!priv->cur_cmd) {
 300                 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
 301                 ret = -1;
 302                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 303                 goto done;
 304         }
 305
 306         resp = (void *)data;
 307         curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
 308         respcmd = le16_to_cpu(resp->command);
 309         result = le16_to_cpu(resp->result);
 310
 311         lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d\n",
 312                      respcmd, le16_to_cpu(resp->seqnum), len);
 313         lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, len);
 314
 315         if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
 316                 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
 317                             le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
 318                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 319                 ret = -1;
 320                 goto done;
 321         }
 322         if (respcmd != CMD_RET(curcmd) &&
 323             respcmd != CMD_RET_802_11_ASSOCIATE && curcmd != CMD_802_11_ASSOCIATE) {
 324                 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
 325                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 326                 ret = -1;
 327                 goto done;
 328         }
 329
 330         if (resp->result == cpu_to_le16(0x0004)) {
 331                 /* 0x0004 means -EAGAIN. Drop the response, let it time out
 332                    and be resubmitted */
 333                 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
 334                             le16_to_cpu(resp->command));
 335                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 336                 ret = -1;
 337                 goto done;
 338         }
 339
 340         /* Now we got response from FW, cancel the command timer */
 341         del_timer(&priv->command_timer);
 342         priv->cmd_timed_out = 0;
 343         if (priv->nr_retries) {
 344                 lbs_pr_info("Received result %x to command %x after %d retries\n",
 345                             result, curcmd, priv->nr_retries);
 346                 priv->nr_retries = 0;
 347         }
 348
 349         /* Store the response code to cur_cmd_retcode. */
 350         priv->cur_cmd_retcode = result;
 351
 352         if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
 353                 struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
 354                 u16 action = le16_to_cpu(psmode->action);
 355
 356                 lbs_deb_host(
 357                        "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
 358                        result, action);
 359
 360                 if (result) {
 361                         lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
 362                                     result);
 363                         /*
 364                          * We should not re-try enter-ps command in
 365                          * ad-hoc mode. It takes place in
 366                          * lbs_execute_next_command().
 367                          */
 368                         if (priv->mode == IW_MODE_ADHOC &&
 369                             action == CMD_SUBCMD_ENTER_PS)
 370                                 priv->psmode = LBS802_11POWERMODECAM;
 371                 } else if (action == CMD_SUBCMD_ENTER_PS) {
 372                         priv->needtowakeup = 0;
 373                         priv->psstate = PS_STATE_AWAKE;
 374
 375                         lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
 376                         if (priv->connect_status != LBS_CONNECTED) {
 377                                 /*
 378                                  * When Deauth Event received before Enter_PS command
 379                                  * response, We need to wake up the firmware.
 380                                  */
 381                                 lbs_deb_host(
 382                                        "disconnected, invoking lbs_ps_wakeup\n");
 383
 384                                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 385                                 mutex_unlock(&priv->lock);
 386                                 lbs_ps_wakeup(priv, 0);
 387                                 mutex_lock(&priv->lock);
 388                                 spin_lock_irqsave(&priv->driver_lock, flags);
 389                         }
 390                 } else if (action == CMD_SUBCMD_EXIT_PS) {
 391                         priv->needtowakeup = 0;
 392                         priv->psstate = PS_STATE_FULL_POWER;
 393                         lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
 394                 } else {
 395                         lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
 396                 }
 397
 398                 lbs_complete_command(priv, priv->cur_cmd, result);
 399                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 400
 401                 ret = 0;
 402                 goto done;
 403         }
 404
 405         /* If the command is not successful, cleanup and return failure */
 406         if ((result != 0 || !(respcmd & 0x8000))) {
 407                 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
 408                        result, respcmd);
 409                 /*
 410                  * Handling errors here
 411                  */
 412                 switch (respcmd) {
 413                 case CMD_RET(CMD_GET_HW_SPEC):
 414                 case CMD_RET(CMD_802_11_RESET):
 415                         lbs_deb_host("CMD_RESP: reset failed\n");
 416                         break;
 417
 418                 }
 419                 lbs_complete_command(priv, priv->cur_cmd, result);
 420                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 421
 422                 ret = -1;
 423                 goto done;
 424         }
 425
 426         spin_unlock_irqrestore(&priv->driver_lock, flags);
 427
 428         if (priv->cur_cmd && priv->cur_cmd->callback) {
 429                 ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
 430                                 resp);
 431         } else
 432                 ret = handle_cmd_response(priv, resp);
 433
 434         spin_lock_irqsave(&priv->driver_lock, flags);
 435
 436         if (priv->cur_cmd) {
 437                 /* Clean up and Put current command back to cmdfreeq */
 438                 lbs_complete_command(priv, priv->cur_cmd, result);
 439         }
 440         spin_unlock_irqrestore(&priv->driver_lock, flags);
 441
 442 done:
 443         mutex_unlock(&priv->lock);
 444         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 445         return ret;
 446 }
 447
 448 static int lbs_send_confirmwake(struct lbs_private *priv)
 449 {
 450         struct cmd_header cmd;
 451         int ret = 0;
 452
 453         lbs_deb_enter(LBS_DEB_HOST);
 454
 455         cmd.command = cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM);
 456         cmd.size = cpu_to_le16(sizeof(cmd));
 457         cmd.seqnum = cpu_to_le16(++priv->seqnum);
 458         cmd.result = 0;
 459
 460         lbs_deb_hex(LBS_DEB_HOST, "wake confirm", (u8 *) &cmd,
 461                 sizeof(cmd));
 462
 463         ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &cmd, sizeof(cmd));
 464         if (ret)
 465                 lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
 466
 467         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 468         return ret;
 469 }
 470
 471 int lbs_process_event(struct lbs_private *priv, u32 event)
 472 {
 473         int ret = 0;
 474
 475         lbs_deb_enter(LBS_DEB_CMD);
 476
 477         switch (event) {
 478         case MACREG_INT_CODE_LINK_SENSED:
 479                 lbs_deb_cmd("EVENT: link sensed\n");
 480                 break;
 481
 482         case MACREG_INT_CODE_DEAUTHENTICATED:
 483                 lbs_deb_cmd("EVENT: deauthenticated\n");
 484                 lbs_mac_event_disconnected(priv);
 485                 break;
 486
 487         case MACREG_INT_CODE_DISASSOCIATED:
 488                 lbs_deb_cmd("EVENT: disassociated\n");
 489                 lbs_mac_event_disconnected(priv);
 490                 break;
 491
 492         case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
 493                 lbs_deb_cmd("EVENT: link lost\n");
 494                 lbs_mac_event_disconnected(priv);
 495                 break;
 496
 497         case MACREG_INT_CODE_PS_SLEEP:
 498                 lbs_deb_cmd("EVENT: ps sleep\n");
 499
 500                 /* handle unexpected PS SLEEP event */
 501                 if (priv->psstate == PS_STATE_FULL_POWER) {
 502                         lbs_deb_cmd(
 503                                "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
 504                         break;
 505                 }
 506                 priv->psstate = PS_STATE_PRE_SLEEP;
 507
 508                 lbs_ps_confirm_sleep(priv);
 509
 510                 break;
 511
 512         case MACREG_INT_CODE_HOST_AWAKE:
 513                 lbs_deb_cmd("EVENT: host awake\n");
 514                 lbs_send_confirmwake(priv);
 515                 break;
 516
 517         case MACREG_INT_CODE_PS_AWAKE:
 518                 lbs_deb_cmd("EVENT: ps awake\n");
 519                 /* handle unexpected PS AWAKE event */
 520                 if (priv->psstate == PS_STATE_FULL_POWER) {
 521                         lbs_deb_cmd(
 522                                "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
 523                         break;
 524                 }
 525
 526                 priv->psstate = PS_STATE_AWAKE;
 527
 528                 if (priv->needtowakeup) {
 529                         /*
 530                          * wait for the command processing to finish
 531                          * before resuming sending
 532                          * priv->needtowakeup will be set to FALSE
 533                          * in lbs_ps_wakeup()
 534                          */
 535                         lbs_deb_cmd("waking up ...\n");
 536                         lbs_ps_wakeup(priv, 0);
 537                 }
 538                 break;
 539
 540         case MACREG_INT_CODE_MIC_ERR_UNICAST:
 541                 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
 542                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
 543                 break;
 544
 545         case MACREG_INT_CODE_MIC_ERR_MULTICAST:
 546                 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
 547                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
 548                 break;
 549
 550         case MACREG_INT_CODE_MIB_CHANGED:
 551                 lbs_deb_cmd("EVENT: MIB CHANGED\n");
 552                 break;
 553         case MACREG_INT_CODE_INIT_DONE:
 554                 lbs_deb_cmd("EVENT: INIT DONE\n");
 555                 break;
 556         case MACREG_INT_CODE_ADHOC_BCN_LOST:
 557                 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
 558                 break;
 559         case MACREG_INT_CODE_RSSI_LOW:
 560                 lbs_pr_alert("EVENT: rssi low\n");
 561                 break;
 562         case MACREG_INT_CODE_SNR_LOW:
 563                 lbs_pr_alert("EVENT: snr low\n");
 564                 break;
 565         case MACREG_INT_CODE_MAX_FAIL:
 566                 lbs_pr_alert("EVENT: max fail\n");
 567                 break;
 568         case MACREG_INT_CODE_RSSI_HIGH:
 569                 lbs_pr_alert("EVENT: rssi high\n");
 570                 break;
 571         case MACREG_INT_CODE_SNR_HIGH:
 572                 lbs_pr_alert("EVENT: snr high\n");
 573                 break;
 574
 575         case MACREG_INT_CODE_MESH_AUTO_STARTED:
 576                 /* Ignore spurious autostart events if autostart is disabled */
 577                 if (!priv->mesh_autostart_enabled) {
 578                         lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
 579                         break;
 580                 }
 581                 lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
 582                 priv->mesh_connect_status = LBS_CONNECTED;
 583                 if (priv->mesh_open) {
 584                         netif_carrier_on(priv->mesh_dev);
 585                         if (!priv->tx_pending_len)
 586                                 netif_wake_queue(priv->mesh_dev);
 587                 }
 588                 priv->mode = IW_MODE_ADHOC;
 589                 schedule_work(&priv->sync_channel);
 590                 break;
 591
 592         default:
 593                 lbs_pr_alert("EVENT: unknown event id %d\n", event);
 594                 break;
 595         }
 596
 597         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 598         return ret;
 599 }