[mirror_ubuntu-bionic-kernel.git] / drivers / net / wireless / libertas / 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 struct lbs_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(struct lbs_adapter *adapter,
        u8 *rates,
        u16 *rates_size)
{
        u8 *card_rates = lbs_bg_rates;
        size_t num_card_rates = sizeof(lbs_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 lbs_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 lbs_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 struct lbs_private structure
 *  @param pbssdesc  Pointer to the BSS descriptor to associate with.
 *
 *  @return          0-success, otherwise fail
 */
int lbs_associate(struct lbs_private *priv, struct assoc_request *assoc_req)
{
        struct lbs_adapter *adapter = priv->adapter;
        int ret;

        lbs_deb_enter(LBS_DEB_JOIN);

        ret = lbs_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;

        lbs_set_radio_control(priv);

        ret = lbs_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 struct lbs_private structure
 *  @param adhocssid    The ssid of the Adhoc Network
 *  @return             0--success, -1--fail
 */
int lbs_start_adhoc_network(struct lbs_private *priv,
        struct assoc_request *assoc_req)
{
        struct lbs_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;
        }

        lbs_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 = lbs_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 struct lbs_private structure
 *  @param pbssdesc     Pointer to a BSS descriptor found in a previous scan
 *                      to attempt to join
 *
 *  @return             0--success, -1--fail
 */
int lbs_join_adhoc_network(struct lbs_private *priv,
        struct assoc_request *assoc_req)
{
        struct lbs_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
            && !lbs_ssid_cmp(adapter->curbssparams.ssid,
                                  adapter->curbssparams.ssid_len,
                                  bss->ssid, bss->ssid_len)
            && (adapter->mode == IW_MODE_ADHOC)
            && (adapter->connect_status == LBS_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;
        }

        lbs_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 = lbs_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 lbs_stop_adhoc_network(struct lbs_private *priv)
{
        return lbs_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 struct lbs_private structure
 *  @return          0--success, -1--fail
 */
int lbs_send_deauthentication(struct lbs_private *priv)
{
        return lbs_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 struct lbs_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 lbs_cmd_80211_authenticate(struct lbs_private *priv,
                                 struct cmd_ds_command *cmd,
                                 void *pdata_buf)
{
        struct lbs_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 lbs_cmd_80211_deauthenticate(struct lbs_private *priv,
                                   struct cmd_ds_command *cmd)
{
        struct lbs_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 lbs_cmd_80211_associate(struct lbs_private *priv,
                              struct cmd_ds_command *cmd, void *pdata_buf)
{
        struct lbs_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.
         */
        lbs_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 (lbs_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 lbs_cmd_80211_ad_hoc_start(struct lbs_private *priv,
                                 struct cmd_ds_command *cmd, void *pdata_buf)
{
        struct lbs_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;
        if (adapter->beacon_period == 0)
                adapter->beacon_period = MRVDRV_BEACON_INTERVAL;
        adhs->beaconperiod = cpu_to_le16(adapter->beacon_period);

        /* 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(lbs_bg_rates));
        memcpy(adhs->rates, lbs_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.
         */
        lbs_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 (lbs_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 lbs_cmd_80211_ad_hoc_stop(struct lbs_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 lbs_cmd_80211_ad_hoc_join(struct lbs_private *priv,
                                struct cmd_ds_command *cmd, void *pdata_buf)
{
        struct lbs_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.
         */
        lbs_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 == LBS802_11POWERMODEMAX_PSP) {
                /* wake up first */
                __le32 Localpsmode;

                Localpsmode = cpu_to_le32(LBS802_11POWERMODECAM);
                ret = lbs_prepare_and_send_command(priv,
                                            CMD_802_11_PS_MODE,
                                            CMD_ACT_SET,
                                            0, 0, &Localpsmode);

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

        if (lbs_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 lbs_ret_80211_associate(struct lbs_private *priv,
                              struct cmd_ds_command *resp)
{
        struct lbs_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) {
                lbs_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 = LBS_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);


        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 lbs_ret_80211_disassociate(struct lbs_private *priv,
                                 struct cmd_ds_command *resp)
{
        lbs_deb_enter(LBS_DEB_JOIN);

        lbs_mac_event_disconnected(priv);

        lbs_deb_leave(LBS_DEB_JOIN);
        return 0;
}

int lbs_ret_80211_ad_hoc_start(struct lbs_private *priv,
                                 struct cmd_ds_command *resp)
{
        struct lbs_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 == LBS_CONNECTED) {
                        lbs_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 = LBS_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);

        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 lbs_ret_80211_ad_hoc_stop(struct lbs_private *priv,
                                struct cmd_ds_command *resp)
{
        lbs_deb_enter(LBS_DEB_JOIN);

        lbs_mac_event_disconnected(priv);

        lbs_deb_leave(LBS_DEB_JOIN);
        return 0;
}