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  66          * no longer valid.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_BEACON_STOP):
 229                 break;
 230
 231         case CMD_RET(CMD_802_11_RSSI):
 232                 ret = lbs_ret_802_11_rssi(priv, resp);
 233                 break;
 234
 235         case CMD_RET(CMD_802_11D_DOMAIN_INFO):
 236                 ret = lbs_ret_802_11d_domain_info(resp);
 237                 break;
 238
 239         case CMD_RET(CMD_802_11_TPC_CFG):
 240                 spin_lock_irqsave(&priv->driver_lock, flags);
 241                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.tpccfg,
 242                         sizeof(struct cmd_ds_802_11_tpc_cfg));
 243                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 244                 break;
 245         case CMD_RET(CMD_802_11_LED_GPIO_CTRL):
 246                 spin_lock_irqsave(&priv->driver_lock, flags);
 247                 memmove((void *)priv->cur_cmd->callback_arg, &resp->params.ledgpio,
 248                         sizeof(struct cmd_ds_802_11_led_ctrl));
 249                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 250                 break;
 251
 252         case CMD_RET(CMD_GET_TSF):
 253                 spin_lock_irqsave(&priv->driver_lock, flags);
 254                 memcpy((void *)priv->cur_cmd->callback_arg,
 255                        &resp->params.gettsf.tsfvalue, sizeof(u64));
 256                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 257                 break;
 258         case CMD_RET(CMD_BT_ACCESS):
 259                 spin_lock_irqsave(&priv->driver_lock, flags);
 260                 if (priv->cur_cmd->callback_arg)
 261                         memcpy((void *)priv->cur_cmd->callback_arg,
 262                                &resp->params.bt.addr1, 2 * ETH_ALEN);
 263                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 264                 break;
 265         case CMD_RET(CMD_FWT_ACCESS):
 266                 spin_lock_irqsave(&priv->driver_lock, flags);
 267                 if (priv->cur_cmd->callback_arg)
 268                         memcpy((void *)priv->cur_cmd->callback_arg, &resp->params.fwt,
 269                                sizeof(resp->params.fwt));
 270                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 271                 break;
 272         case CMD_RET(CMD_802_11_BEACON_CTRL):
 273                 ret = lbs_ret_802_11_bcn_ctrl(priv, resp);
 274                 break;
 275
 276         default:
 277                 lbs_pr_err("CMD_RESP: unknown cmd response 0x%04x\n",
 278                            le16_to_cpu(resp->command));
 279                 break;
 280         }
 281         lbs_deb_leave(LBS_DEB_HOST);
 282         return ret;
 283 }
 284
 285 int lbs_process_command_response(struct lbs_private *priv, u8 *data, u32 len)
 286 {
 287         uint16_t respcmd, curcmd;
 288         struct cmd_header *resp;
 289         int ret = 0;
 290         unsigned long flags;
 291         uint16_t result;
 292
 293         lbs_deb_enter(LBS_DEB_HOST);
 294
 295         mutex_lock(&priv->lock);
 296         spin_lock_irqsave(&priv->driver_lock, flags);
 297
 298         if (!priv->cur_cmd) {
 299                 lbs_deb_host("CMD_RESP: cur_cmd is NULL\n");
 300                 ret = -1;
 301                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 302                 goto done;
 303         }
 304
 305         resp = (void *)data;
 306         curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
 307         respcmd = le16_to_cpu(resp->command);
 308         result = le16_to_cpu(resp->result);
 309
 310         lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d\n",
 311                      respcmd, le16_to_cpu(resp->seqnum), len);
 312         lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, len);
 313
 314         if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
 315                 lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
 316                             le16_to_cpu(resp->seqnum), le16_to_cpu(priv->cur_cmd->cmdbuf->seqnum));
 317                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 318                 ret = -1;
 319                 goto done;
 320         }
 321         if (respcmd != CMD_RET(curcmd) &&
 322             respcmd != CMD_RET_802_11_ASSOCIATE && curcmd != CMD_802_11_ASSOCIATE) {
 323                 lbs_pr_info("Invalid CMD_RESP %x to command %x!\n", respcmd, curcmd);
 324                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 325                 ret = -1;
 326                 goto done;
 327         }
 328
 329         if (resp->result == cpu_to_le16(0x0004)) {
 330                 /* 0x0004 means -EAGAIN. Drop the response, let it time out
 331                    and be resubmitted */
 332                 lbs_pr_info("Firmware returns DEFER to command %x. Will let it time out...\n",
 333                             le16_to_cpu(resp->command));
 334                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 335                 ret = -1;
 336                 goto done;
 337         }
 338
 339         /* Now we got response from FW, cancel the command timer */
 340         del_timer(&priv->command_timer);
 341         priv->cmd_timed_out = 0;
 342         if (priv->nr_retries) {
 343                 lbs_pr_info("Received result %x to command %x after %d retries\n",
 344                             result, curcmd, priv->nr_retries);
 345                 priv->nr_retries = 0;
 346         }
 347
 348         /* Store the response code to cur_cmd_retcode. */
 349         priv->cur_cmd_retcode = result;
 350
 351         if (respcmd == CMD_RET(CMD_802_11_PS_MODE)) {
 352                 struct cmd_ds_802_11_ps_mode *psmode = (void *) &resp[1];
 353                 u16 action = le16_to_cpu(psmode->action);
 354
 355                 lbs_deb_host(
 356                        "CMD_RESP: PS_MODE cmd reply result 0x%x, action 0x%x\n",
 357                        result, action);
 358
 359                 if (result) {
 360                         lbs_deb_host("CMD_RESP: PS command failed with 0x%x\n",
 361                                     result);
 362                         /*
 363                          * We should not re-try enter-ps command in
 364                          * ad-hoc mode. It takes place in
 365                          * lbs_execute_next_command().
 366                          */
 367                         if (priv->mode == IW_MODE_ADHOC &&
 368                             action == CMD_SUBCMD_ENTER_PS)
 369                                 priv->psmode = LBS802_11POWERMODECAM;
 370                 } else if (action == CMD_SUBCMD_ENTER_PS) {
 371                         priv->needtowakeup = 0;
 372                         priv->psstate = PS_STATE_AWAKE;
 373
 374                         lbs_deb_host("CMD_RESP: ENTER_PS command response\n");
 375                         if (priv->connect_status != LBS_CONNECTED) {
 376                                 /*
 377                                  * When Deauth Event received before Enter_PS command
 378                                  * response, We need to wake up the firmware.
 379                                  */
 380                                 lbs_deb_host(
 381                                        "disconnected, invoking lbs_ps_wakeup\n");
 382
 383                                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 384                                 mutex_unlock(&priv->lock);
 385                                 lbs_ps_wakeup(priv, 0);
 386                                 mutex_lock(&priv->lock);
 387                                 spin_lock_irqsave(&priv->driver_lock, flags);
 388                         }
 389                 } else if (action == CMD_SUBCMD_EXIT_PS) {
 390                         priv->needtowakeup = 0;
 391                         priv->psstate = PS_STATE_FULL_POWER;
 392                         lbs_deb_host("CMD_RESP: EXIT_PS command response\n");
 393                 } else {
 394                         lbs_deb_host("CMD_RESP: PS action 0x%X\n", action);
 395                 }
 396
 397                 lbs_complete_command(priv, priv->cur_cmd, result);
 398                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 399
 400                 ret = 0;
 401                 goto done;
 402         }
 403
 404         /* If the command is not successful, cleanup and return failure */
 405         if ((result != 0 || !(respcmd & 0x8000))) {
 406                 lbs_deb_host("CMD_RESP: error 0x%04x in command reply 0x%04x\n",
 407                        result, respcmd);
 408                 /*
 409                  * Handling errors here
 410                  */
 411                 switch (respcmd) {
 412                 case CMD_RET(CMD_GET_HW_SPEC):
 413                 case CMD_RET(CMD_802_11_RESET):
 414                         lbs_deb_host("CMD_RESP: reset failed\n");
 415                         break;
 416
 417                 }
 418                 lbs_complete_command(priv, priv->cur_cmd, result);
 419                 spin_unlock_irqrestore(&priv->driver_lock, flags);
 420
 421                 ret = -1;
 422                 goto done;
 423         }
 424
 425         spin_unlock_irqrestore(&priv->driver_lock, flags);
 426
 427         if (priv->cur_cmd && priv->cur_cmd->callback) {
 428                 ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg,
 429                                 resp);
 430         } else
 431                 ret = handle_cmd_response(priv, resp);
 432
 433         spin_lock_irqsave(&priv->driver_lock, flags);
 434
 435         if (priv->cur_cmd) {
 436                 /* Clean up and Put current command back to cmdfreeq */
 437                 lbs_complete_command(priv, priv->cur_cmd, result);
 438         }
 439         spin_unlock_irqrestore(&priv->driver_lock, flags);
 440
 441 done:
 442         mutex_unlock(&priv->lock);
 443         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 444         return ret;
 445 }
 446
 447 static int lbs_send_confirmwake(struct lbs_private *priv)
 448 {
 449         struct cmd_header cmd;
 450         int ret = 0;
 451
 452         lbs_deb_enter(LBS_DEB_HOST);
 453
 454         cmd.command = cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM);
 455         cmd.size = cpu_to_le16(sizeof(cmd));
 456         cmd.seqnum = cpu_to_le16(++priv->seqnum);
 457         cmd.result = 0;
 458
 459         lbs_deb_hex(LBS_DEB_HOST, "wake confirm", (u8 *) &cmd,
 460                 sizeof(cmd));
 461
 462         ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &cmd, sizeof(cmd));
 463         if (ret)
 464                 lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
 465
 466         lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
 467         return ret;
 468 }
 469
 470 int lbs_process_event(struct lbs_private *priv, u32 event)
 471 {
 472         int ret = 0;
 473
 474         lbs_deb_enter(LBS_DEB_CMD);
 475
 476         switch (event) {
 477         case MACREG_INT_CODE_LINK_SENSED:
 478                 lbs_deb_cmd("EVENT: link sensed\n");
 479                 break;
 480
 481         case MACREG_INT_CODE_DEAUTHENTICATED:
 482                 lbs_deb_cmd("EVENT: deauthenticated\n");
 483                 lbs_mac_event_disconnected(priv);
 484                 break;
 485
 486         case MACREG_INT_CODE_DISASSOCIATED:
 487                 lbs_deb_cmd("EVENT: disassociated\n");
 488                 lbs_mac_event_disconnected(priv);
 489                 break;
 490
 491         case MACREG_INT_CODE_LINK_LOST_NO_SCAN:
 492                 lbs_deb_cmd("EVENT: link lost\n");
 493                 lbs_mac_event_disconnected(priv);
 494                 break;
 495
 496         case MACREG_INT_CODE_PS_SLEEP:
 497                 lbs_deb_cmd("EVENT: ps sleep\n");
 498
 499                 /* handle unexpected PS SLEEP event */
 500                 if (priv->psstate == PS_STATE_FULL_POWER) {
 501                         lbs_deb_cmd(
 502                                "EVENT: in FULL POWER mode, ignoreing PS_SLEEP\n");
 503                         break;
 504                 }
 505                 priv->psstate = PS_STATE_PRE_SLEEP;
 506
 507                 lbs_ps_confirm_sleep(priv);
 508
 509                 break;
 510
 511         case MACREG_INT_CODE_HOST_AWAKE:
 512                 lbs_deb_cmd("EVENT: host awake\n");
 513                 lbs_send_confirmwake(priv);
 514                 break;
 515
 516         case MACREG_INT_CODE_PS_AWAKE:
 517                 lbs_deb_cmd("EVENT: ps awake\n");
 518                 /* handle unexpected PS AWAKE event */
 519                 if (priv->psstate == PS_STATE_FULL_POWER) {
 520                         lbs_deb_cmd(
 521                                "EVENT: In FULL POWER mode - ignore PS AWAKE\n");
 522                         break;
 523                 }
 524
 525                 priv->psstate = PS_STATE_AWAKE;
 526
 527                 if (priv->needtowakeup) {
 528                         /*
 529                          * wait for the command processing to finish
 530                          * before resuming sending
 531                          * priv->needtowakeup will be set to FALSE
 532                          * in lbs_ps_wakeup()
 533                          */
 534                         lbs_deb_cmd("waking up ...\n");
 535                         lbs_ps_wakeup(priv, 0);
 536                 }
 537                 break;
 538
 539         case MACREG_INT_CODE_MIC_ERR_UNICAST:
 540                 lbs_deb_cmd("EVENT: UNICAST MIC ERROR\n");
 541                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_UNICAST);
 542                 break;
 543
 544         case MACREG_INT_CODE_MIC_ERR_MULTICAST:
 545                 lbs_deb_cmd("EVENT: MULTICAST MIC ERROR\n");
 546                 handle_mic_failureevent(priv, MACREG_INT_CODE_MIC_ERR_MULTICAST);
 547                 break;
 548
 549         case MACREG_INT_CODE_MIB_CHANGED:
 550                 lbs_deb_cmd("EVENT: MIB CHANGED\n");
 551                 break;
 552         case MACREG_INT_CODE_INIT_DONE:
 553                 lbs_deb_cmd("EVENT: INIT DONE\n");
 554                 break;
 555         case MACREG_INT_CODE_ADHOC_BCN_LOST:
 556                 lbs_deb_cmd("EVENT: ADHOC beacon lost\n");
 557                 break;
 558         case MACREG_INT_CODE_RSSI_LOW:
 559                 lbs_pr_alert("EVENT: rssi low\n");
 560                 break;
 561         case MACREG_INT_CODE_SNR_LOW:
 562                 lbs_pr_alert("EVENT: snr low\n");
 563                 break;
 564         case MACREG_INT_CODE_MAX_FAIL:
 565                 lbs_pr_alert("EVENT: max fail\n");
 566                 break;
 567         case MACREG_INT_CODE_RSSI_HIGH:
 568                 lbs_pr_alert("EVENT: rssi high\n");
 569                 break;
 570         case MACREG_INT_CODE_SNR_HIGH:
 571                 lbs_pr_alert("EVENT: snr high\n");
 572                 break;
 573
 574         case MACREG_INT_CODE_MESH_AUTO_STARTED:
 575                 /* Ignore spurious autostart events if autostart is disabled */
 576                 if (!priv->mesh_autostart_enabled) {
 577                         lbs_pr_info("EVENT: MESH_AUTO_STARTED (ignoring)\n");
 578                         break;
 579                 }
 580                 lbs_pr_info("EVENT: MESH_AUTO_STARTED\n");
 581                 priv->mesh_connect_status = LBS_CONNECTED;
 582                 if (priv->mesh_open) {
 583                         netif_carrier_on(priv->mesh_dev);
 584                         if (!priv->tx_pending_len)
 585                                 netif_wake_queue(priv->mesh_dev);
 586                 }
 587                 priv->mode = IW_MODE_ADHOC;
 588                 schedule_work(&priv->sync_channel);
 589                 break;
 590
 591         default:
 592                 lbs_pr_alert("EVENT: unknown event id %d\n", event);
 593                 break;
 594         }
 595
 596         lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
 597         return ret;
 598 }