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join.c

/**
  *  Functions implementing wlan infrastructure and adhoc join routines,
  *  IOCTL handlers as well as command preperation and response routines
  *  for sending adhoc start, adhoc join, and association commands
  *  to the firmware.
  */
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/wireless.h>
#include <linux/etherdevice.h>

#include <net/iw_handler.h>

#include "host.h"
#include "decl.h"
#include "join.h"
#include "dev.h"
#include "assoc.h"

/* The firmware needs certain bits masked out of the beacon-derviced capability
 * field when associating/joining to BSSs.
 */
#define CAPINFO_MASK    (~(0xda00))

/**
 *  @brief This function finds common rates between rate1 and card rates.
 *
 * It will fill common rates in rate1 as output if found.
 *
 * NOTE: Setting the MSB of the basic rates need to be taken
 *   care, either before or after calling this function
 *
 *  @param adapter     A pointer to wlan_adapter structure
 *  @param rate1       the buffer which keeps input and output
 *  @param rate1_size  the size of rate1 buffer; new size of buffer on return
 *
 *  @return            0 or -1
 */
static int get_common_rates(wlan_adapter * adapter, u8 * rates, u16 *rates_size)
{
      u8 *card_rates = libertas_bg_rates;
      size_t num_card_rates = sizeof(libertas_bg_rates);
      int ret = 0, i, j;
      u8 tmp[30];
      size_t tmp_size = 0;

      /* For each rate in card_rates that exists in rate1, copy to tmp */
      for (i = 0; card_rates[i] && (i < num_card_rates); i++) {
            for (j = 0; rates[j] && (j < *rates_size); j++) {
                  if (rates[j] == card_rates[i])
                        tmp[tmp_size++] = card_rates[i];
            }
      }

      lbs_deb_hex(LBS_DEB_JOIN, "AP rates    ", rates, *rates_size);
      lbs_deb_hex(LBS_DEB_JOIN, "card rates  ", card_rates, num_card_rates);
      lbs_deb_hex(LBS_DEB_JOIN, "common rates", tmp, tmp_size);
      lbs_deb_join("Tx datarate is currently 0x%X\n", adapter->cur_rate);

      if (!adapter->auto_rate) {
            for (i = 0; i < tmp_size; i++) {
                  if (tmp[i] == adapter->cur_rate)
                        goto done;
            }
            lbs_pr_alert("Previously set fixed data rate %#x isn't "
                   "compatible with the network.\n", adapter->cur_rate);
            ret = -1;
            goto done;
      }
      ret = 0;

done:
      memset(rates, 0, *rates_size);
      *rates_size = min_t(int, tmp_size, *rates_size);
      memcpy(rates, tmp, *rates_size);
      return ret;
}


/**
 *  @brief Sets the MSB on basic rates as the firmware requires
 *
 * Scan through an array and set the MSB for basic data rates.
 *
 *  @param rates     buffer of data rates
 *  @param len       size of buffer
 */
static void libertas_set_basic_rate_flags(u8 * rates, size_t len)
{
      int i;

      for (i = 0; i < len; i++) {
            if (rates[i] == 0x02 || rates[i] == 0x04 ||
                rates[i] == 0x0b || rates[i] == 0x16)
                  rates[i] |= 0x80;
      }
}

/**
 *  @brief Unsets the MSB on basic rates
 *
 * Scan through an array and unset the MSB for basic data rates.
 *
 *  @param rates     buffer of data rates
 *  @param len       size of buffer
 */
void libertas_unset_basic_rate_flags(u8 * rates, size_t len)
{
      int i;

      for (i = 0; i < len; i++)
            rates[i] &= 0x7f;
}


/**
 *  @brief Associate to a specific BSS discovered in a scan
 *
 *  @param priv      A pointer to wlan_private structure
 *  @param pbssdesc  Pointer to the BSS descriptor to associate with.
 *
 *  @return          0-success, otherwise fail
 */
int wlan_associate(wlan_private * priv, struct assoc_request * assoc_req)
{
      wlan_adapter *adapter = priv->adapter;
      int ret;

      lbs_deb_enter(LBS_DEB_JOIN);

      ret = libertas_prepare_and_send_command(priv, CMD_802_11_AUTHENTICATE,
                            0, CMD_OPTION_WAITFORRSP,
                            0, assoc_req->bss.bssid);

      if (ret)
            goto done;

      /* set preamble to firmware */
      if (   (adapter->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
          && (assoc_req->bss.capability & WLAN_CAPABILITY_SHORT_PREAMBLE))
            adapter->preamble = CMD_TYPE_SHORT_PREAMBLE;
      else
            adapter->preamble = CMD_TYPE_LONG_PREAMBLE;

      libertas_set_radio_control(priv);

      ret = libertas_prepare_and_send_command(priv, CMD_802_11_ASSOCIATE,
                            0, CMD_OPTION_WAITFORRSP, 0, assoc_req);

done:
      lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
      return ret;
}

/**
 *  @brief Start an Adhoc Network
 *
 *  @param priv         A pointer to wlan_private structure
 *  @param adhocssid    The ssid of the Adhoc Network
 *  @return             0--success, -1--fail
 */
int libertas_start_adhoc_network(wlan_private * priv, struct assoc_request * assoc_req)
{
      wlan_adapter *adapter = priv->adapter;
      int ret = 0;

      adapter->adhoccreate = 1;

      if (adapter->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) {
            lbs_deb_join("AdhocStart: Short preamble\n");
            adapter->preamble = CMD_TYPE_SHORT_PREAMBLE;
      } else {
            lbs_deb_join("AdhocStart: Long preamble\n");
            adapter->preamble = CMD_TYPE_LONG_PREAMBLE;
      }

      libertas_set_radio_control(priv);

      lbs_deb_join("AdhocStart: channel = %d\n", assoc_req->channel);
      lbs_deb_join("AdhocStart: band = %d\n", assoc_req->band);

      ret = libertas_prepare_and_send_command(priv, CMD_802_11_AD_HOC_START,
                            0, CMD_OPTION_WAITFORRSP, 0, assoc_req);

      return ret;
}

/**
 *  @brief Join an adhoc network found in a previous scan
 *
 *  @param priv         A pointer to wlan_private structure
 *  @param pbssdesc     Pointer to a BSS descriptor found in a previous scan
 *                      to attempt to join
 *
 *  @return             0--success, -1--fail
 */
int libertas_join_adhoc_network(wlan_private * priv, struct assoc_request * assoc_req)
{
      wlan_adapter *adapter = priv->adapter;
      struct bss_descriptor * bss = &assoc_req->bss;
      int ret = 0;

      lbs_deb_join("%s: Current SSID '%s', ssid length %u\n",
                   __func__,
                   escape_essid(adapter->curbssparams.ssid,
                                adapter->curbssparams.ssid_len),
                   adapter->curbssparams.ssid_len);
      lbs_deb_join("%s: requested ssid '%s', ssid length %u\n",
                   __func__, escape_essid(bss->ssid, bss->ssid_len),
                   bss->ssid_len);

      /* check if the requested SSID is already joined */
      if (   adapter->curbssparams.ssid_len
          && !libertas_ssid_cmp(adapter->curbssparams.ssid,
                                adapter->curbssparams.ssid_len,
                                bss->ssid, bss->ssid_len)
          && (adapter->mode == IW_MODE_ADHOC)
          && (adapter->connect_status == LIBERTAS_CONNECTED)) {
            union iwreq_data wrqu;

            lbs_deb_join("ADHOC_J_CMD: New ad-hoc SSID is the same as "
                         "current, not attempting to re-join");

            /* Send the re-association event though, because the association
             * request really was successful, even if just a null-op.
             */
            memset(&wrqu, 0, sizeof(wrqu));
            memcpy(wrqu.ap_addr.sa_data, adapter->curbssparams.bssid,
                   ETH_ALEN);
            wrqu.ap_addr.sa_family = ARPHRD_ETHER;
            wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
            goto out;
      }

      /* Use shortpreamble only when both creator and card supports
         short preamble */
      if (   !(bss->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
          || !(adapter->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)) {
            lbs_deb_join("AdhocJoin: Long preamble\n");
            adapter->preamble = CMD_TYPE_LONG_PREAMBLE;
      } else {
            lbs_deb_join("AdhocJoin: Short preamble\n");
            adapter->preamble = CMD_TYPE_SHORT_PREAMBLE;
      }

      libertas_set_radio_control(priv);

      lbs_deb_join("AdhocJoin: channel = %d\n", assoc_req->channel);
      lbs_deb_join("AdhocJoin: band = %c\n", assoc_req->band);

      adapter->adhoccreate = 0;

      ret = libertas_prepare_and_send_command(priv, CMD_802_11_AD_HOC_JOIN,
                            0, CMD_OPTION_WAITFORRSP,
                            OID_802_11_SSID, assoc_req);

out:
      return ret;
}

int libertas_stop_adhoc_network(wlan_private * priv)
{
      return libertas_prepare_and_send_command(priv, CMD_802_11_AD_HOC_STOP,
                             0, CMD_OPTION_WAITFORRSP, 0, NULL);
}

/**
 *  @brief Send Deauthentication Request
 *
 *  @param priv      A pointer to wlan_private structure
 *  @return          0--success, -1--fail
 */
int libertas_send_deauthentication(wlan_private * priv)
{
      return libertas_prepare_and_send_command(priv, CMD_802_11_DEAUTHENTICATE,
                             0, CMD_OPTION_WAITFORRSP, 0, NULL);
}

/**
 *  @brief This function prepares command of authenticate.
 *
 *  @param priv      A pointer to wlan_private structure
 *  @param cmd       A pointer to cmd_ds_command structure
 *  @param pdata_buf Void cast of pointer to a BSSID to authenticate with
 *
 *  @return         0 or -1
 */
int libertas_cmd_80211_authenticate(wlan_private * priv,
                         struct cmd_ds_command *cmd,
                         void *pdata_buf)
{
      wlan_adapter *adapter = priv->adapter;
      struct cmd_ds_802_11_authenticate *pauthenticate = &cmd->params.auth;
      int ret = -1;
      u8 *bssid = pdata_buf;
      DECLARE_MAC_BUF(mac);

      lbs_deb_enter(LBS_DEB_JOIN);

      cmd->command = cpu_to_le16(CMD_802_11_AUTHENTICATE);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_authenticate)
                              + S_DS_GEN);

      /* translate auth mode to 802.11 defined wire value */
      switch (adapter->secinfo.auth_mode) {
      case IW_AUTH_ALG_OPEN_SYSTEM:
            pauthenticate->authtype = 0x00;
            break;
      case IW_AUTH_ALG_SHARED_KEY:
            pauthenticate->authtype = 0x01;
            break;
      case IW_AUTH_ALG_LEAP:
            pauthenticate->authtype = 0x80;
            break;
      default:
            lbs_deb_join("AUTH_CMD: invalid auth alg 0x%X\n",
                         adapter->secinfo.auth_mode);
            goto out;
      }

      memcpy(pauthenticate->macaddr, bssid, ETH_ALEN);

      lbs_deb_join("AUTH_CMD: BSSID is : %s auth=0x%X\n",
                   print_mac(mac, bssid), pauthenticate->authtype);
      ret = 0;

out:
      lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
      return ret;
}

int libertas_cmd_80211_deauthenticate(wlan_private * priv,
                           struct cmd_ds_command *cmd)
{
      wlan_adapter *adapter = priv->adapter;
      struct cmd_ds_802_11_deauthenticate *dauth = &cmd->params.deauth;

      lbs_deb_enter(LBS_DEB_JOIN);

      cmd->command = cpu_to_le16(CMD_802_11_DEAUTHENTICATE);
      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_deauthenticate) +
                       S_DS_GEN);

      /* set AP MAC address */
      memmove(dauth->macaddr, adapter->curbssparams.bssid, ETH_ALEN);

      /* Reason code 3 = Station is leaving */
#define REASON_CODE_STA_LEAVING 3
      dauth->reasoncode = cpu_to_le16(REASON_CODE_STA_LEAVING);

      lbs_deb_leave(LBS_DEB_JOIN);
      return 0;
}

int libertas_cmd_80211_associate(wlan_private * priv,
                        struct cmd_ds_command *cmd, void *pdata_buf)
{
      wlan_adapter *adapter = priv->adapter;
      struct cmd_ds_802_11_associate *passo = &cmd->params.associate;
      int ret = 0;
      struct assoc_request * assoc_req = pdata_buf;
      struct bss_descriptor * bss = &assoc_req->bss;
      u8 *pos;
      u16 tmpcap, tmplen;
      struct mrvlietypes_ssidparamset *ssid;
      struct mrvlietypes_phyparamset *phy;
      struct mrvlietypes_ssparamset *ss;
      struct mrvlietypes_ratesparamset *rates;
      struct mrvlietypes_rsnparamset *rsn;

      lbs_deb_enter(LBS_DEB_JOIN);

      pos = (u8 *) passo;

      if (!adapter) {
            ret = -1;
            goto done;
      }

      cmd->command = cpu_to_le16(CMD_802_11_ASSOCIATE);

      memcpy(passo->peerstaaddr, bss->bssid, sizeof(passo->peerstaaddr));
      pos += sizeof(passo->peerstaaddr);

      /* set the listen interval */
      passo->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);

      pos += sizeof(passo->capability);
      pos += sizeof(passo->listeninterval);
      pos += sizeof(passo->bcnperiod);
      pos += sizeof(passo->dtimperiod);

      ssid = (struct mrvlietypes_ssidparamset *) pos;
      ssid->header.type = cpu_to_le16(TLV_TYPE_SSID);
      tmplen = bss->ssid_len;
      ssid->header.len = cpu_to_le16(tmplen);
      memcpy(ssid->ssid, bss->ssid, tmplen);
      pos += sizeof(ssid->header) + tmplen;

      phy = (struct mrvlietypes_phyparamset *) pos;
      phy->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
      tmplen = sizeof(phy->fh_ds.dsparamset);
      phy->header.len = cpu_to_le16(tmplen);
      memcpy(&phy->fh_ds.dsparamset,
             &bss->phyparamset.dsparamset.currentchan,
             tmplen);
      pos += sizeof(phy->header) + tmplen;

      ss = (struct mrvlietypes_ssparamset *) pos;
      ss->header.type = cpu_to_le16(TLV_TYPE_CF);
      tmplen = sizeof(ss->cf_ibss.cfparamset);
      ss->header.len = cpu_to_le16(tmplen);
      pos += sizeof(ss->header) + tmplen;

      rates = (struct mrvlietypes_ratesparamset *) pos;
      rates->header.type = cpu_to_le16(TLV_TYPE_RATES);
      memcpy(&rates->rates, &bss->rates, MAX_RATES);
      tmplen = MAX_RATES;
      if (get_common_rates(adapter, rates->rates, &tmplen)) {
            ret = -1;
            goto done;
      }
      pos += sizeof(rates->header) + tmplen;
      rates->header.len = cpu_to_le16(tmplen);
      lbs_deb_join("ASSOC_CMD: num rates = %u\n", tmplen);

      /* Copy the infra. association rates into Current BSS state structure */
      memset(&adapter->curbssparams.rates, 0, sizeof(adapter->curbssparams.rates));
      memcpy(&adapter->curbssparams.rates, &rates->rates, tmplen);

      /* Set MSB on basic rates as the firmware requires, but _after_
       * copying to current bss rates.
       */
      libertas_set_basic_rate_flags(rates->rates, tmplen);

      if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) {
            rsn = (struct mrvlietypes_rsnparamset *) pos;
            /* WPA_IE or WPA2_IE */
            rsn->header.type = cpu_to_le16((u16) assoc_req->wpa_ie[0]);
            tmplen = (u16) assoc_req->wpa_ie[1];
            rsn->header.len = cpu_to_le16(tmplen);
            memcpy(rsn->rsnie, &assoc_req->wpa_ie[2], tmplen);
            lbs_deb_hex(LBS_DEB_JOIN, "ASSOC_CMD: RSN IE", (u8 *) rsn,
                  sizeof(rsn->header) + tmplen);
            pos += sizeof(rsn->header) + tmplen;
      }

      /* update curbssparams */
      adapter->curbssparams.channel = bss->phyparamset.dsparamset.currentchan;

      if (libertas_parse_dnld_countryinfo_11d(priv, bss)) {
            ret = -1;
            goto done;
      }

      cmd->size = cpu_to_le16((u16) (pos - (u8 *) passo) + S_DS_GEN);

      /* set the capability info */
      tmpcap = (bss->capability & CAPINFO_MASK);
      if (bss->mode == IW_MODE_INFRA)
            tmpcap |= WLAN_CAPABILITY_ESS;
      passo->capability = cpu_to_le16(tmpcap);
      lbs_deb_join("ASSOC_CMD: capability=%4X CAPINFO_MASK=%4X\n",
                 tmpcap, CAPINFO_MASK);

done:
      lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
      return ret;
}

int libertas_cmd_80211_ad_hoc_start(wlan_private * priv,
                         struct cmd_ds_command *cmd, void *pdata_buf)
{
      wlan_adapter *adapter = priv->adapter;
      struct cmd_ds_802_11_ad_hoc_start *adhs = &cmd->params.ads;
      int ret = 0;
      int cmdappendsize = 0;
      struct assoc_request * assoc_req = pdata_buf;
      u16 tmpcap = 0;
      size_t ratesize = 0;

      lbs_deb_enter(LBS_DEB_JOIN);

      if (!adapter) {
            ret = -1;
            goto done;
      }

      cmd->command = cpu_to_le16(CMD_802_11_AD_HOC_START);

      /*
       * Fill in the parameters for 2 data structures:
       *   1. cmd_ds_802_11_ad_hoc_start command
       *   2. adapter->scantable[i]
       *
       * Driver will fill up SSID, bsstype,IBSS param, Physical Param,
       *   probe delay, and cap info.
       *
       * Firmware will fill up beacon period, DTIM, Basic rates
       *   and operational rates.
       */

      memset(adhs->ssid, 0, IW_ESSID_MAX_SIZE);
      memcpy(adhs->ssid, assoc_req->ssid, assoc_req->ssid_len);

      lbs_deb_join("ADHOC_S_CMD: SSID '%s', ssid length %u\n",
                   escape_essid(assoc_req->ssid, assoc_req->ssid_len),
                   assoc_req->ssid_len);

      /* set the BSS type */
      adhs->bsstype = CMD_BSS_TYPE_IBSS;
      adapter->mode = IW_MODE_ADHOC;
      adhs->beaconperiod = cpu_to_le16(MRVDRV_BEACON_INTERVAL);

      /* set Physical param set */
#define DS_PARA_IE_ID   3
#define DS_PARA_IE_LEN  1

      adhs->phyparamset.dsparamset.elementid = DS_PARA_IE_ID;
      adhs->phyparamset.dsparamset.len = DS_PARA_IE_LEN;

      WARN_ON(!assoc_req->channel);

      lbs_deb_join("ADHOC_S_CMD: Creating ADHOC on channel %d\n",
                 assoc_req->channel);

      adhs->phyparamset.dsparamset.currentchan = assoc_req->channel;

      /* set IBSS param set */
#define IBSS_PARA_IE_ID   6
#define IBSS_PARA_IE_LEN  2

      adhs->ssparamset.ibssparamset.elementid = IBSS_PARA_IE_ID;
      adhs->ssparamset.ibssparamset.len = IBSS_PARA_IE_LEN;
      adhs->ssparamset.ibssparamset.atimwindow = 0;

      /* set capability info */
      tmpcap = WLAN_CAPABILITY_IBSS;
      if (assoc_req->secinfo.wep_enabled) {
            lbs_deb_join("ADHOC_S_CMD: WEP enabled, setting privacy on\n");
            tmpcap |= WLAN_CAPABILITY_PRIVACY;
      } else {
            lbs_deb_join("ADHOC_S_CMD: WEP disabled, setting privacy off\n");
      }
      adhs->capability = cpu_to_le16(tmpcap);

      /* probedelay */
      adhs->probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);

      memset(adhs->rates, 0, sizeof(adhs->rates));
      ratesize = min(sizeof(adhs->rates), sizeof(libertas_bg_rates));
      memcpy(adhs->rates, libertas_bg_rates, ratesize);

      /* Copy the ad-hoc creating rates into Current BSS state structure */
      memset(&adapter->curbssparams.rates, 0, sizeof(adapter->curbssparams.rates));
      memcpy(&adapter->curbssparams.rates, &adhs->rates, ratesize);

      /* Set MSB on basic rates as the firmware requires, but _after_
       * copying to current bss rates.
       */
      libertas_set_basic_rate_flags(adhs->rates, ratesize);

      lbs_deb_join("ADHOC_S_CMD: rates=%02x %02x %02x %02x \n",
             adhs->rates[0], adhs->rates[1], adhs->rates[2], adhs->rates[3]);

      lbs_deb_join("ADHOC_S_CMD: AD HOC Start command is ready\n");

      if (libertas_create_dnld_countryinfo_11d(priv)) {
            lbs_deb_join("ADHOC_S_CMD: dnld_countryinfo_11d failed\n");
            ret = -1;
            goto done;
      }

      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_ad_hoc_start) +
                        S_DS_GEN + cmdappendsize);

      ret = 0;
done:
      lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
      return ret;
}

int libertas_cmd_80211_ad_hoc_stop(wlan_private * priv,
                        struct cmd_ds_command *cmd)
{
      cmd->command = cpu_to_le16(CMD_802_11_AD_HOC_STOP);
      cmd->size = cpu_to_le16(S_DS_GEN);

      return 0;
}

int libertas_cmd_80211_ad_hoc_join(wlan_private * priv,
                        struct cmd_ds_command *cmd, void *pdata_buf)
{
      wlan_adapter *adapter = priv->adapter;
      struct cmd_ds_802_11_ad_hoc_join *join_cmd = &cmd->params.adj;
      struct assoc_request * assoc_req = pdata_buf;
      struct bss_descriptor *bss = &assoc_req->bss;
      int cmdappendsize = 0;
      int ret = 0;
      u16 ratesize = 0;
      DECLARE_MAC_BUF(mac);

      lbs_deb_enter(LBS_DEB_JOIN);

      cmd->command = cpu_to_le16(CMD_802_11_AD_HOC_JOIN);

      join_cmd->bss.type = CMD_BSS_TYPE_IBSS;
      join_cmd->bss.beaconperiod = cpu_to_le16(bss->beaconperiod);

      memcpy(&join_cmd->bss.bssid, &bss->bssid, ETH_ALEN);
      memcpy(&join_cmd->bss.ssid, &bss->ssid, bss->ssid_len);

      memcpy(&join_cmd->bss.phyparamset, &bss->phyparamset,
             sizeof(union ieeetypes_phyparamset));

      memcpy(&join_cmd->bss.ssparamset, &bss->ssparamset,
             sizeof(union IEEEtypes_ssparamset));

      join_cmd->bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
      lbs_deb_join("ADHOC_J_CMD: tmpcap=%4X CAPINFO_MASK=%4X\n",
             bss->capability, CAPINFO_MASK);

      /* information on BSSID descriptor passed to FW */
      lbs_deb_join(
             "ADHOC_J_CMD: BSSID = %s, SSID = '%s'\n",
             print_mac(mac, join_cmd->bss.bssid),
             join_cmd->bss.ssid);

      /* failtimeout */
      join_cmd->failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);

      /* probedelay */
      join_cmd->probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);

      adapter->curbssparams.channel = bss->channel;

      /* Copy Data rates from the rates recorded in scan response */
      memset(join_cmd->bss.rates, 0, sizeof(join_cmd->bss.rates));
      ratesize = min_t(u16, sizeof(join_cmd->bss.rates), MAX_RATES);
      memcpy(join_cmd->bss.rates, bss->rates, ratesize);
      if (get_common_rates(adapter, join_cmd->bss.rates, &ratesize)) {
            lbs_deb_join("ADHOC_J_CMD: get_common_rates returns error.\n");
            ret = -1;
            goto done;
      }

      /* Copy the ad-hoc creating rates into Current BSS state structure */
      memset(&adapter->curbssparams.rates, 0, sizeof(adapter->curbssparams.rates));
      memcpy(&adapter->curbssparams.rates, join_cmd->bss.rates, ratesize);

      /* Set MSB on basic rates as the firmware requires, but _after_
       * copying to current bss rates.
       */
      libertas_set_basic_rate_flags(join_cmd->bss.rates, ratesize);

      join_cmd->bss.ssparamset.ibssparamset.atimwindow =
          cpu_to_le16(bss->atimwindow);

      if (assoc_req->secinfo.wep_enabled) {
            u16 tmp = le16_to_cpu(join_cmd->bss.capability);
            tmp |= WLAN_CAPABILITY_PRIVACY;
            join_cmd->bss.capability = cpu_to_le16(tmp);
      }

      if (adapter->psmode == WLAN802_11POWERMODEMAX_PSP) {
            /* wake up first */
            __le32 Localpsmode;

            Localpsmode = cpu_to_le32(WLAN802_11POWERMODECAM);
            ret = libertas_prepare_and_send_command(priv,
                                  CMD_802_11_PS_MODE,
                                  CMD_ACT_SET,
                                  0, 0, &Localpsmode);

            if (ret) {
                  ret = -1;
                  goto done;
            }
      }

      if (libertas_parse_dnld_countryinfo_11d(priv, bss)) {
            ret = -1;
            goto done;
      }

      cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_ad_hoc_join) +
                        S_DS_GEN + cmdappendsize);

done:
      lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
      return ret;
}

int libertas_ret_80211_associate(wlan_private * priv,
                        struct cmd_ds_command *resp)
{
      wlan_adapter *adapter = priv->adapter;
      int ret = 0;
      union iwreq_data wrqu;
      struct ieeetypes_assocrsp *passocrsp;
      struct bss_descriptor * bss;
      u16 status_code;

      lbs_deb_enter(LBS_DEB_JOIN);

      if (!adapter->in_progress_assoc_req) {
            lbs_deb_join("ASSOC_RESP: no in-progress association request\n");
            ret = -1;
            goto done;
      }
      bss = &adapter->in_progress_assoc_req->bss;

      passocrsp = (struct ieeetypes_assocrsp *) & resp->params;

      /*
       * Older FW versions map the IEEE 802.11 Status Code in the association
       * response to the following values returned in passocrsp->statuscode:
       *
       *    IEEE Status Code                Marvell Status Code
       *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
       *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
       *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
       *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
       *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
       *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
       *
       * Other response codes:
       *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
       *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
       *                                    association response from the AP)
       */

      status_code = le16_to_cpu(passocrsp->statuscode);
      switch (status_code) {
      case 0x00:
            lbs_deb_join("ASSOC_RESP: Association succeeded\n");
            break;
      case 0x01:
            lbs_deb_join("ASSOC_RESP: Association failed; invalid "
                         "parameters (status code %d)\n", status_code);
            break;
      case 0x02:
            lbs_deb_join("ASSOC_RESP: Association failed; internal timer "
                         "expired while waiting for the AP (status code %d)"
                         "\n", status_code);
            break;
      case 0x03:
            lbs_deb_join("ASSOC_RESP: Association failed; association "
                         "was refused by the AP (status code %d)\n",
                         status_code);
            break;
      case 0x04:
            lbs_deb_join("ASSOC_RESP: Association failed; authentication "
                         "was refused by the AP (status code %d)\n",
                         status_code);
            break;
      default:
            lbs_deb_join("ASSOC_RESP: Association failed; reason unknown "
                         "(status code %d)\n", status_code);
            break;
      }

      if (status_code) {
            libertas_mac_event_disconnected(priv);
            ret = -1;
            goto done;
      }

      lbs_deb_hex(LBS_DEB_JOIN, "ASSOC_RESP", (void *)&resp->params,
            le16_to_cpu(resp->size) - S_DS_GEN);

      /* Send a Media Connected event, according to the Spec */
      adapter->connect_status = LIBERTAS_CONNECTED;

      lbs_deb_join("ASSOC_RESP: assocated to '%s'\n",
                   escape_essid(bss->ssid, bss->ssid_len));

      /* Update current SSID and BSSID */
      memcpy(&adapter->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
      adapter->curbssparams.ssid_len = bss->ssid_len;
      memcpy(adapter->curbssparams.bssid, bss->bssid, ETH_ALEN);

      lbs_deb_join("ASSOC_RESP: currentpacketfilter is %x\n",
             adapter->currentpacketfilter);

      adapter->SNR[TYPE_RXPD][TYPE_AVG] = 0;
      adapter->NF[TYPE_RXPD][TYPE_AVG] = 0;

      memset(adapter->rawSNR, 0x00, sizeof(adapter->rawSNR));
      memset(adapter->rawNF, 0x00, sizeof(adapter->rawNF));
      adapter->nextSNRNF = 0;
      adapter->numSNRNF = 0;

      netif_carrier_on(priv->dev);
      netif_wake_queue(priv->dev);

      if (priv->mesh_dev) {
            netif_carrier_on(priv->mesh_dev);
            netif_wake_queue(priv->mesh_dev);
      }

      memcpy(wrqu.ap_addr.sa_data, adapter->curbssparams.bssid, ETH_ALEN);
      wrqu.ap_addr.sa_family = ARPHRD_ETHER;
      wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);

done:
      lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
      return ret;
}

int libertas_ret_80211_disassociate(wlan_private * priv,
                         struct cmd_ds_command *resp)
{
      lbs_deb_enter(LBS_DEB_JOIN);

      libertas_mac_event_disconnected(priv);

      lbs_deb_leave(LBS_DEB_JOIN);
      return 0;
}

int libertas_ret_80211_ad_hoc_start(wlan_private * priv,
                         struct cmd_ds_command *resp)
{
      wlan_adapter *adapter = priv->adapter;
      int ret = 0;
      u16 command = le16_to_cpu(resp->command);
      u16 result = le16_to_cpu(resp->result);
      struct cmd_ds_802_11_ad_hoc_result *padhocresult;
      union iwreq_data wrqu;
      struct bss_descriptor *bss;
      DECLARE_MAC_BUF(mac);

      lbs_deb_enter(LBS_DEB_JOIN);

      padhocresult = &resp->params.result;

      lbs_deb_join("ADHOC_RESP: size = %d\n", le16_to_cpu(resp->size));
      lbs_deb_join("ADHOC_RESP: command = %x\n", command);
      lbs_deb_join("ADHOC_RESP: result = %x\n", result);

      if (!adapter->in_progress_assoc_req) {
            lbs_deb_join("ADHOC_RESP: no in-progress association request\n");
            ret = -1;
            goto done;
      }
      bss = &adapter->in_progress_assoc_req->bss;

      /*
       * Join result code 0 --> SUCCESS
       */
      if (result) {
            lbs_deb_join("ADHOC_RESP: failed\n");
            if (adapter->connect_status == LIBERTAS_CONNECTED) {
                  libertas_mac_event_disconnected(priv);
            }
            ret = -1;
            goto done;
      }

      /*
       * Now the join cmd should be successful
       * If BSSID has changed use SSID to compare instead of BSSID
       */
      lbs_deb_join("ADHOC_RESP: associated to '%s'\n",
                   escape_essid(bss->ssid, bss->ssid_len));

      /* Send a Media Connected event, according to the Spec */
      adapter->connect_status = LIBERTAS_CONNECTED;

      if (command == CMD_RET(CMD_802_11_AD_HOC_START)) {
            /* Update the created network descriptor with the new BSSID */
            memcpy(bss->bssid, padhocresult->bssid, ETH_ALEN);
      }

      /* Set the BSSID from the joined/started descriptor */
      memcpy(&adapter->curbssparams.bssid, bss->bssid, ETH_ALEN);

      /* Set the new SSID to current SSID */
      memcpy(&adapter->curbssparams.ssid, &bss->ssid, IW_ESSID_MAX_SIZE);
      adapter->curbssparams.ssid_len = bss->ssid_len;

      netif_carrier_on(priv->dev);
      netif_wake_queue(priv->dev);

      if (priv->mesh_dev) {
            netif_carrier_on(priv->mesh_dev);
            netif_wake_queue(priv->mesh_dev);
      }

      memset(&wrqu, 0, sizeof(wrqu));
      memcpy(wrqu.ap_addr.sa_data, adapter->curbssparams.bssid, ETH_ALEN);
      wrqu.ap_addr.sa_family = ARPHRD_ETHER;
      wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);

      lbs_deb_join("ADHOC_RESP: - Joined/Started Ad Hoc\n");
      lbs_deb_join("ADHOC_RESP: channel = %d\n", adapter->curbssparams.channel);
      lbs_deb_join("ADHOC_RESP: BSSID = %s\n",
                 print_mac(mac, padhocresult->bssid));

done:
      lbs_deb_leave_args(LBS_DEB_JOIN, "ret %d", ret);
      return ret;
}

int libertas_ret_80211_ad_hoc_stop(wlan_private * priv,
                        struct cmd_ds_command *resp)
{
      lbs_deb_enter(LBS_DEB_JOIN);

      libertas_mac_event_disconnected(priv);

      lbs_deb_leave(LBS_DEB_JOIN);
      return 0;
}

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