core.c

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/******************************************************************************
 *
 * Copyright(c) 2009-2012  Realtek Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
 * wlanfae <[email protected]>
 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
 * Hsinchu 300, Taiwan.
 *
 * Larry Finger <[email protected]>
 *
 *****************************************************************************/

#include "wifi.h"
#include "core.h"
#include "cam.h"
#include "base.h"
#include "pci.h"
#include "ps.h"

#include <linux/export.h>

void rtl_fw_cb(const struct firmware *firmware, void *context)
{
    struct ieee80211_hw *hw = context;
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    int err;

    RT_TRACE(rtlpriv, COMP_ERR, DBG_LOUD,
             "Firmware callback routine entered!\n");
    complete(&rtlpriv->firmware_loading_complete);
    if (!firmware) {
        pr_err("Firmware %s not available\n", rtlpriv->cfg->fw_name);
        rtlpriv->max_fw_size = 0;
        return;
    }
    if (firmware->size > rtlpriv->max_fw_size) {
        RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
             "Firmware is too big!\n");
        release_firmware(firmware);
        return;
    }
    memcpy(rtlpriv->rtlhal.pfirmware, firmware->data, firmware->size);
    rtlpriv->rtlhal.fwsize = firmware->size;
    release_firmware(firmware);

    err = ieee80211_register_hw(hw);
    if (err) {
        RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
             "Can't register mac80211 hw\n");
        return;
    } else {
        rtlpriv->mac80211.mac80211_registered = 1;
    }
    set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);

    /*init rfkill */
    rtl_init_rfkill(hw);
}
EXPORT_SYMBOL(rtl_fw_cb);

/*mutex for start & stop is must here. */
static int rtl_op_start(struct ieee80211_hw *hw)
{
    int err;
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));

    if (!is_hal_stop(rtlhal))
        return 0;
    if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
        return 0;
    mutex_lock(&rtlpriv->locks.conf_mutex);
    err = rtlpriv->intf_ops->adapter_start(hw);
    if (!err)
        rtl_watch_dog_timer_callback((unsigned long)hw);
    mutex_unlock(&rtlpriv->locks.conf_mutex);
    return err;
}

static void rtl_op_stop(struct ieee80211_hw *hw)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
    struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
    struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));

    if (is_hal_stop(rtlhal))
        return;

    if (unlikely(ppsc->rfpwr_state == ERFOFF)) {
        rtl_ips_nic_on(hw);
        mdelay(1);
    }

    mutex_lock(&rtlpriv->locks.conf_mutex);

    mac->link_state = MAC80211_NOLINK;
    memset(mac->bssid, 0, 6);
    mac->vendor = PEER_UNKNOWN;

    /*reset sec info */
    rtl_cam_reset_sec_info(hw);

    rtl_deinit_deferred_work(hw);
    rtlpriv->intf_ops->adapter_stop(hw);

    mutex_unlock(&rtlpriv->locks.conf_mutex);
}

static void rtl_op_tx(struct ieee80211_hw *hw,
              struct ieee80211_tx_control *control,
              struct sk_buff *skb)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
    struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
    struct rtl_tcb_desc tcb_desc;
    memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));

    if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
        goto err_free;

    if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
        goto err_free;

    if (!rtlpriv->intf_ops->waitq_insert(hw, control->sta, skb))
        rtlpriv->intf_ops->adapter_tx(hw, control->sta, skb, &tcb_desc);

    return;

err_free:
    dev_kfree_skb_any(skb);
}

static int rtl_op_add_interface(struct ieee80211_hw *hw,
        struct ieee80211_vif *vif)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
    int err = 0;

    vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER;

    if (mac->vif) {
        RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
             "vif has been set!! mac->vif = 0x%p\n", mac->vif);
        return -EOPNOTSUPP;
    }

    rtl_ips_nic_on(hw);

    mutex_lock(&rtlpriv->locks.conf_mutex);
    switch (vif->type) {
    case NL80211_IFTYPE_STATION:
        if (mac->beacon_enabled == 1) {
            RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
                 "NL80211_IFTYPE_STATION\n");
            mac->beacon_enabled = 0;
            rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
                    rtlpriv->cfg->maps
                    [RTL_IBSS_INT_MASKS]);
        }
        break;
    case NL80211_IFTYPE_ADHOC:
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
             "NL80211_IFTYPE_ADHOC\n");

        mac->link_state = MAC80211_LINKED;
        rtlpriv->cfg->ops->set_bcn_reg(hw);
        if (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G)
            mac->basic_rates = 0xfff;
        else
            mac->basic_rates = 0xff0;
        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
                (u8 *) (&mac->basic_rates));

        break;
    case NL80211_IFTYPE_AP:
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
             "NL80211_IFTYPE_AP\n");

        mac->link_state = MAC80211_LINKED;
        rtlpriv->cfg->ops->set_bcn_reg(hw);
        if (rtlpriv->rtlhal.current_bandtype == BAND_ON_2_4G)
            mac->basic_rates = 0xfff;
        else
            mac->basic_rates = 0xff0;
        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
                (u8 *) (&mac->basic_rates));
        break;
    default:
        RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
             "operation mode %d is not supported!\n", vif->type);
        err = -EOPNOTSUPP;
        goto out;
    }

    mac->vif = vif;
    mac->opmode = vif->type;
    rtlpriv->cfg->ops->set_network_type(hw, vif->type);
    memcpy(mac->mac_addr, vif->addr, ETH_ALEN);
    rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ETHER_ADDR, mac->mac_addr);

out:
    mutex_unlock(&rtlpriv->locks.conf_mutex);
    return err;
}

static void rtl_op_remove_interface(struct ieee80211_hw *hw,
        struct ieee80211_vif *vif)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_mac *mac = rtl_mac(rtl_priv(hw));

    mutex_lock(&rtlpriv->locks.conf_mutex);

    /* Free beacon resources */
    if ((mac->opmode == NL80211_IFTYPE_AP) ||
        (mac->opmode == NL80211_IFTYPE_ADHOC) ||
        (mac->opmode == NL80211_IFTYPE_MESH_POINT)) {
        if (mac->beacon_enabled == 1) {
            mac->beacon_enabled = 0;
            rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
                    rtlpriv->cfg->maps
                    [RTL_IBSS_INT_MASKS]);
        }
    }

    /*
     *Note: We assume NL80211_IFTYPE_UNSPECIFIED as
     *NO LINK for our hardware.
     */
    mac->vif = NULL;
    mac->link_state = MAC80211_NOLINK;
    memset(mac->bssid, 0, 6);
    mac->vendor = PEER_UNKNOWN;
    mac->opmode = NL80211_IFTYPE_UNSPECIFIED;
    rtlpriv->cfg->ops->set_network_type(hw, mac->opmode);
    mutex_unlock(&rtlpriv->locks.conf_mutex);
}

static int rtl_op_config(struct ieee80211_hw *hw, u32 changed)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_phy *rtlphy = &(rtlpriv->phy);
    struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
    struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
    struct ieee80211_conf *conf = &hw->conf;

    mutex_lock(&rtlpriv->locks.conf_mutex);
    if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {  /*BIT(2)*/
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
             "IEEE80211_CONF_CHANGE_LISTEN_INTERVAL\n");
    }

    /*For IPS */
    if (changed & IEEE80211_CONF_CHANGE_IDLE) {
        if (hw->conf.flags & IEEE80211_CONF_IDLE)
            rtl_ips_nic_off(hw);
        else
            rtl_ips_nic_on(hw);
    } else {
        /*
         *although rfoff may not cause by ips, but we will
         *check the reason in set_rf_power_state function
         */
        if (unlikely(ppsc->rfpwr_state == ERFOFF))
            rtl_ips_nic_on(hw);
    }

    /*For LPS */
    if (changed & IEEE80211_CONF_CHANGE_PS) {
        cancel_delayed_work(&rtlpriv->works.ps_work);
        cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
        if (conf->flags & IEEE80211_CONF_PS) {
            rtlpriv->psc.sw_ps_enabled = true;
            /* sleep here is must, or we may recv the beacon and
             * cause mac80211 into wrong ps state, this will cause
             * power save nullfunc send fail, and further cause
             * pkt loss, So sleep must quickly but not immediatly
             * because that will cause nullfunc send by mac80211
             * fail, and cause pkt loss, we have tested that 5mA
             * is worked very well */
            if (!rtlpriv->psc.multi_buffered)
                queue_delayed_work(rtlpriv->works.rtl_wq,
                        &rtlpriv->works.ps_work,
                        MSECS(5));
        } else {
            rtl_swlps_rf_awake(hw);
            rtlpriv->psc.sw_ps_enabled = false;
        }
    }

    if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
             "IEEE80211_CONF_CHANGE_RETRY_LIMITS %x\n",
             hw->conf.long_frame_max_tx_count);
        mac->retry_long = hw->conf.long_frame_max_tx_count;
        mac->retry_short = hw->conf.long_frame_max_tx_count;
        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RETRY_LIMIT,
                          (u8 *) (&hw->conf.
                              long_frame_max_tx_count));
    }

    if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
        struct ieee80211_channel *channel = hw->conf.channel;
        u8 wide_chan = (u8) channel->hw_value;

        /*
         *because we should back channel to
         *current_network.chan in in scanning,
         *So if set_chan == current_network.chan
         *we should set it.
         *because mac80211 tell us wrong bw40
         *info for cisco1253 bw20, so we modify
         *it here based on UPPER & LOWER
         */
        switch (hw->conf.channel_type) {
        case NL80211_CHAN_HT20:
        case NL80211_CHAN_NO_HT:
            /* SC */
            mac->cur_40_prime_sc =
                PRIME_CHNL_OFFSET_DONT_CARE;
            rtlphy->current_chan_bw = HT_CHANNEL_WIDTH_20;
            mac->bw_40 = false;
            break;
        case NL80211_CHAN_HT40MINUS:
            /* SC */
            mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_UPPER;
            rtlphy->current_chan_bw =
                HT_CHANNEL_WIDTH_20_40;
            mac->bw_40 = true;

            /*wide channel */
            wide_chan -= 2;

            break;
        case NL80211_CHAN_HT40PLUS:
            /* SC */
            mac->cur_40_prime_sc = PRIME_CHNL_OFFSET_LOWER;
            rtlphy->current_chan_bw =
                HT_CHANNEL_WIDTH_20_40;
            mac->bw_40 = true;

            /*wide channel */
            wide_chan += 2;

            break;
        default:
            mac->bw_40 = false;
            RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
                 "switch case not processed\n");
            break;
        }

        if (wide_chan <= 0)
            wide_chan = 1;

        /* In scanning, before we go offchannel we may send a ps=1 null
         * to AP, and then we may send a ps = 0 null to AP quickly, but
         * first null may have caused AP to put lots of packet to hw tx
         * buffer. These packets must be tx'd before we go off channel
         * so we must delay more time to let AP flush these packets
         * before going offchannel, or dis-association or delete BA will
         * happen by AP
         */
        if (rtlpriv->mac80211.offchan_delay) {
            rtlpriv->mac80211.offchan_delay = false;
            mdelay(50);
        }
        rtlphy->current_channel = wide_chan;

        rtlpriv->cfg->ops->switch_channel(hw);
        rtlpriv->cfg->ops->set_channel_access(hw);
        rtlpriv->cfg->ops->set_bw_mode(hw,
                           hw->conf.channel_type);
    }

    mutex_unlock(&rtlpriv->locks.conf_mutex);

    return 0;
}

static void rtl_op_configure_filter(struct ieee80211_hw *hw,
                 unsigned int changed_flags,
                 unsigned int *new_flags, u64 multicast)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_mac *mac = rtl_mac(rtl_priv(hw));

    *new_flags &= RTL_SUPPORTED_FILTERS;
    if (!changed_flags)
        return;

    /*TODO: we disable broadcase now, so enable here */
    if (changed_flags & FIF_ALLMULTI) {
        if (*new_flags & FIF_ALLMULTI) {
            mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AM] |
                rtlpriv->cfg->maps[MAC_RCR_AB];
            RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
                 "Enable receive multicast frame\n");
        } else {
            mac->rx_conf &= ~(rtlpriv->cfg->maps[MAC_RCR_AM] |
                      rtlpriv->cfg->maps[MAC_RCR_AB]);
            RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
                 "Disable receive multicast frame\n");
        }
    }

    if (changed_flags & FIF_FCSFAIL) {
        if (*new_flags & FIF_FCSFAIL) {
            mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACRC32];
            RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
                 "Enable receive FCS error frame\n");
        } else {
            mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACRC32];
            RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
                 "Disable receive FCS error frame\n");
        }
    }

    /* if ssid not set to hw don't check bssid
     * here just used for linked scanning, & linked
     * and nolink check bssid is set in set network_type */
    if ((changed_flags & FIF_BCN_PRBRESP_PROMISC) &&
        (mac->link_state >= MAC80211_LINKED)) {
        if (mac->opmode != NL80211_IFTYPE_AP) {
            if (*new_flags & FIF_BCN_PRBRESP_PROMISC) {
                rtlpriv->cfg->ops->set_chk_bssid(hw, false);
            } else {
                rtlpriv->cfg->ops->set_chk_bssid(hw, true);
            }
        }
    }

    if (changed_flags & FIF_CONTROL) {
        if (*new_flags & FIF_CONTROL) {
            mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_ACF];

            RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
                 "Enable receive control frame\n");
        } else {
            mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_ACF];
            RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
                 "Disable receive control frame\n");
        }
    }

    if (changed_flags & FIF_OTHER_BSS) {
        if (*new_flags & FIF_OTHER_BSS) {
            mac->rx_conf |= rtlpriv->cfg->maps[MAC_RCR_AAP];
            RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
                 "Enable receive other BSS's frame\n");
        } else {
            mac->rx_conf &= ~rtlpriv->cfg->maps[MAC_RCR_AAP];
            RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
                 "Disable receive other BSS's frame\n");
        }
    }
}
static int rtl_op_sta_add(struct ieee80211_hw *hw,
             struct ieee80211_vif *vif,
             struct ieee80211_sta *sta)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
    struct rtl_sta_info *sta_entry;

    if (sta) {
        sta_entry = (struct rtl_sta_info *) sta->drv_priv;
        if (rtlhal->current_bandtype == BAND_ON_2_4G) {
            sta_entry->wireless_mode = WIRELESS_MODE_G;
            if (sta->supp_rates[0] <= 0xf)
                sta_entry->wireless_mode = WIRELESS_MODE_B;
            if (sta->ht_cap.ht_supported)
                sta_entry->wireless_mode = WIRELESS_MODE_N_24G;
        } else if (rtlhal->current_bandtype == BAND_ON_5G) {
            sta_entry->wireless_mode = WIRELESS_MODE_A;
            if (sta->ht_cap.ht_supported)
                sta_entry->wireless_mode = WIRELESS_MODE_N_24G;
        }

        /* I found some times mac80211 give wrong supp_rates for adhoc*/
        if (rtlpriv->mac80211.opmode == NL80211_IFTYPE_ADHOC)
            sta_entry->wireless_mode = WIRELESS_MODE_G;

        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
             "Add sta addr is %pM\n", sta->addr);
        rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
    }
    return 0;
}
static int rtl_op_sta_remove(struct ieee80211_hw *hw,
                struct ieee80211_vif *vif,
                struct ieee80211_sta *sta)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_sta_info *sta_entry;
    if (sta) {
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
             "Remove sta addr is %pM\n", sta->addr);
        sta_entry = (struct rtl_sta_info *) sta->drv_priv;
        sta_entry->wireless_mode = 0;
        sta_entry->ratr_index = 0;
    }
    return 0;
}
static int _rtl_get_hal_qnum(u16 queue)
{
    int qnum;

    switch (queue) {
    case 0:
        qnum = AC3_VO;
        break;
    case 1:
        qnum = AC2_VI;
        break;
    case 2:
        qnum = AC0_BE;
        break;
    case 3:
        qnum = AC1_BK;
        break;
    default:
        qnum = AC0_BE;
        break;
    }
    return qnum;
}

/*
 *for mac80211 VO=0, VI=1, BE=2, BK=3
 *for rtl819x  BE=0, BK=1, VI=2, VO=3
 */
static int rtl_op_conf_tx(struct ieee80211_hw *hw,
           struct ieee80211_vif *vif, u16 queue,
           const struct ieee80211_tx_queue_params *param)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
    int aci;

    if (queue >= AC_MAX) {
        RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
             "queue number %d is incorrect!\n", queue);
        return -EINVAL;
    }

    aci = _rtl_get_hal_qnum(queue);
    mac->ac[aci].aifs = param->aifs;
    mac->ac[aci].cw_min = cpu_to_le16(param->cw_min);
    mac->ac[aci].cw_max = cpu_to_le16(param->cw_max);
    mac->ac[aci].tx_op = cpu_to_le16(param->txop);
    memcpy(&mac->edca_param[aci], param, sizeof(*param));
    rtlpriv->cfg->ops->set_qos(hw, aci);
    return 0;
}

static void rtl_op_bss_info_changed(struct ieee80211_hw *hw,
                 struct ieee80211_vif *vif,
                 struct ieee80211_bss_conf *bss_conf, u32 changed)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
    struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
    struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
    struct ieee80211_sta *sta = NULL;

    mutex_lock(&rtlpriv->locks.conf_mutex);
    if ((vif->type == NL80211_IFTYPE_ADHOC) ||
        (vif->type == NL80211_IFTYPE_AP) ||
        (vif->type == NL80211_IFTYPE_MESH_POINT)) {
        if ((changed & BSS_CHANGED_BEACON) ||
            (changed & BSS_CHANGED_BEACON_ENABLED &&
             bss_conf->enable_beacon)) {
            if (mac->beacon_enabled == 0) {
                RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
                     "BSS_CHANGED_BEACON_ENABLED\n");

                /*start hw beacon interrupt. */
                /*rtlpriv->cfg->ops->set_bcn_reg(hw); */
                mac->beacon_enabled = 1;
                rtlpriv->cfg->ops->update_interrupt_mask(hw,
                        rtlpriv->cfg->maps
                        [RTL_IBSS_INT_MASKS],
                        0);

                if (rtlpriv->cfg->ops->linked_set_reg)
                    rtlpriv->cfg->ops->linked_set_reg(hw);
            }
        }
        if ((changed & BSS_CHANGED_BEACON_ENABLED &&
            !bss_conf->enable_beacon)) {
            if (mac->beacon_enabled == 1) {
                RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
                     "ADHOC DISABLE BEACON\n");

                mac->beacon_enabled = 0;
                rtlpriv->cfg->ops->update_interrupt_mask(hw, 0,
                        rtlpriv->cfg->maps
                        [RTL_IBSS_INT_MASKS]);
            }
        }
        if (changed & BSS_CHANGED_BEACON_INT) {
            RT_TRACE(rtlpriv, COMP_BEACON, DBG_TRACE,
                 "BSS_CHANGED_BEACON_INT\n");
            mac->beacon_interval = bss_conf->beacon_int;
            rtlpriv->cfg->ops->set_bcn_intv(hw);
        }
    }

    /*TODO: reference to enum ieee80211_bss_change */
    if (changed & BSS_CHANGED_ASSOC) {
        if (bss_conf->assoc) {
            /* we should reset all sec info & cam
             * before set cam after linked, we should not
             * reset in disassoc, that will cause tkip->wep
             * fail because some flag will be wrong */
            /* reset sec info */
            rtl_cam_reset_sec_info(hw);
            /* reset cam to fix wep fail issue
             * when change from wpa to wep */
            rtl_cam_reset_all_entry(hw);

            mac->link_state = MAC80211_LINKED;
            mac->cnt_after_linked = 0;
            mac->assoc_id = bss_conf->aid;
            memcpy(mac->bssid, bss_conf->bssid, 6);

            if (rtlpriv->cfg->ops->linked_set_reg)
                rtlpriv->cfg->ops->linked_set_reg(hw);
            if (mac->opmode == NL80211_IFTYPE_STATION && sta)
                rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
            RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
                 "BSS_CHANGED_ASSOC\n");
        } else {
            if (mac->link_state == MAC80211_LINKED)
                rtl_lps_leave(hw);

            mac->link_state = MAC80211_NOLINK;
            memset(mac->bssid, 0, 6);

            /* reset sec info */
            rtl_cam_reset_sec_info(hw);

            rtl_cam_reset_all_entry(hw);
            mac->vendor = PEER_UNKNOWN;

            RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG,
                 "BSS_CHANGED_UN_ASSOC\n");
        }
    }

    if (changed & BSS_CHANGED_ERP_CTS_PROT) {
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
             "BSS_CHANGED_ERP_CTS_PROT\n");
        mac->use_cts_protect = bss_conf->use_cts_prot;
    }

    if (changed & BSS_CHANGED_ERP_PREAMBLE) {
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD,
             "BSS_CHANGED_ERP_PREAMBLE use short preamble:%x\n",
             bss_conf->use_short_preamble);

        mac->short_preamble = bss_conf->use_short_preamble;
        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_ACK_PREAMBLE,
                          &mac->short_preamble);
    }

    if (changed & BSS_CHANGED_ERP_SLOT) {
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
             "BSS_CHANGED_ERP_SLOT\n");

        if (bss_conf->use_short_slot)
            mac->slot_time = RTL_SLOT_TIME_9;
        else
            mac->slot_time = RTL_SLOT_TIME_20;

        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SLOT_TIME,
                          &mac->slot_time);
    }

    if (changed & BSS_CHANGED_HT) {
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE, "BSS_CHANGED_HT\n");
        rcu_read_lock();
        sta = get_sta(hw, vif, bss_conf->bssid);
        if (sta) {
            if (sta->ht_cap.ampdu_density >
                mac->current_ampdu_density)
                mac->current_ampdu_density =
                    sta->ht_cap.ampdu_density;
            if (sta->ht_cap.ampdu_factor <
                mac->current_ampdu_factor)
                mac->current_ampdu_factor =
                    sta->ht_cap.ampdu_factor;
        }
        rcu_read_unlock();

        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_SHORTGI_DENSITY,
                          &mac->max_mss_density);
        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AMPDU_FACTOR,
                          &mac->current_ampdu_factor);
        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AMPDU_MIN_SPACE,
                          &mac->current_ampdu_density);
    }

    if (changed & BSS_CHANGED_BSSID) {
        u32 basic_rates;

        rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BSSID,
                          (u8 *) bss_conf->bssid);

        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_DMESG, "%pM\n",
             bss_conf->bssid);

        mac->vendor = PEER_UNKNOWN;
        memcpy(mac->bssid, bss_conf->bssid, 6);
        rtlpriv->cfg->ops->set_network_type(hw, vif->type);

        rcu_read_lock();
        sta = get_sta(hw, vif, bss_conf->bssid);
        if (!sta) {
            rcu_read_unlock();
            goto out;
        }

        if (rtlhal->current_bandtype == BAND_ON_5G) {
            mac->mode = WIRELESS_MODE_A;
        } else {
            if (sta->supp_rates[0] <= 0xf)
                mac->mode = WIRELESS_MODE_B;
            else
                mac->mode = WIRELESS_MODE_G;
        }

        if (sta->ht_cap.ht_supported) {
            if (rtlhal->current_bandtype == BAND_ON_2_4G)
                mac->mode = WIRELESS_MODE_N_24G;
            else
                mac->mode = WIRELESS_MODE_N_5G;
        }

        /* just station need it, because ibss & ap mode will
         * set in sta_add, and will be NULL here */
        if (mac->opmode == NL80211_IFTYPE_STATION) {
            struct rtl_sta_info *sta_entry;
            sta_entry = (struct rtl_sta_info *) sta->drv_priv;
            sta_entry->wireless_mode = mac->mode;
        }

        if (sta->ht_cap.ht_supported) {
            mac->ht_enable = true;

            /*
             * for cisco 1252 bw20 it's wrong
             * if (ht_cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
             *  mac->bw_40 = true;
             * }
             * */
        }

        if (changed & BSS_CHANGED_BASIC_RATES) {
            /* for 5G must << RATE_6M_INDEX=4,
             * because 5G have no cck rate*/
            if (rtlhal->current_bandtype == BAND_ON_5G)
                basic_rates = sta->supp_rates[1] << 4;
            else
                basic_rates = sta->supp_rates[0];

            mac->basic_rates = basic_rates;
            rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_BASIC_RATE,
                    (u8 *) (&basic_rates));
        }
        rcu_read_unlock();
    }

    /*
     * For FW LPS:
     * To tell firmware we have connected
     * to an AP. For 92SE/CE power save v2.
     */
    if (changed & BSS_CHANGED_ASSOC) {
        if (bss_conf->assoc) {
            if (ppsc->fwctrl_lps) {
                u8 mstatus = RT_MEDIA_CONNECT;
                rtlpriv->cfg->ops->set_hw_reg(hw,
                              HW_VAR_H2C_FW_JOINBSSRPT,
                              &mstatus);
                ppsc->report_linked = true;
            }
        } else {
            if (ppsc->fwctrl_lps) {
                u8 mstatus = RT_MEDIA_DISCONNECT;
                rtlpriv->cfg->ops->set_hw_reg(hw,
                              HW_VAR_H2C_FW_JOINBSSRPT,
                              &mstatus);
                ppsc->report_linked = false;
            }
        }
    }

out:
    mutex_unlock(&rtlpriv->locks.conf_mutex);
}

static u64 rtl_op_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    u64 tsf;

    rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_CORRECT_TSF, (u8 *) (&tsf));
    return tsf;
}

static void rtl_op_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
               u64 tsf)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
    u8 bibss = (mac->opmode == NL80211_IFTYPE_ADHOC) ? 1 : 0;

    mac->tsf = tsf;
    rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_CORRECT_TSF, &bibss);
}

static void rtl_op_reset_tsf(struct ieee80211_hw *hw,
                 struct ieee80211_vif *vif)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    u8 tmp = 0;

    rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_DUAL_TSF_RST, &tmp);
}

static void rtl_op_sta_notify(struct ieee80211_hw *hw,
                  struct ieee80211_vif *vif,
                  enum sta_notify_cmd cmd,
                  struct ieee80211_sta *sta)
{
    switch (cmd) {
    case STA_NOTIFY_SLEEP:
        break;
    case STA_NOTIFY_AWAKE:
        break;
    default:
        break;
    }
}

static int rtl_op_ampdu_action(struct ieee80211_hw *hw,
                   struct ieee80211_vif *vif,
                   enum ieee80211_ampdu_mlme_action action,
                   struct ieee80211_sta *sta, u16 tid, u16 *ssn,
                   u8 buf_size)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);

    switch (action) {
    case IEEE80211_AMPDU_TX_START:
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
             "IEEE80211_AMPDU_TX_START: TID:%d\n", tid);
        return rtl_tx_agg_start(hw, sta, tid, ssn);
        break;
    case IEEE80211_AMPDU_TX_STOP:
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
             "IEEE80211_AMPDU_TX_STOP: TID:%d\n", tid);
        return rtl_tx_agg_stop(hw, sta, tid);
        break;
    case IEEE80211_AMPDU_TX_OPERATIONAL:
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
             "IEEE80211_AMPDU_TX_OPERATIONAL:TID:%d\n", tid);
        rtl_tx_agg_oper(hw, sta, tid);
        break;
    case IEEE80211_AMPDU_RX_START:
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
             "IEEE80211_AMPDU_RX_START:TID:%d\n", tid);
        break;
    case IEEE80211_AMPDU_RX_STOP:
        RT_TRACE(rtlpriv, COMP_MAC80211, DBG_TRACE,
             "IEEE80211_AMPDU_RX_STOP:TID:%d\n", tid);
        break;
    default:
        RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
             "IEEE80211_AMPDU_ERR!!!!:\n");
        return -EOPNOTSUPP;
    }
    return 0;
}

static void rtl_op_sw_scan_start(struct ieee80211_hw *hw)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_mac *mac = rtl_mac(rtl_priv(hw));

    mac->act_scanning = true;

    RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "\n");

    if (mac->link_state == MAC80211_LINKED) {
        rtl_lps_leave(hw);
        mac->link_state = MAC80211_LINKED_SCANNING;
    } else {
        rtl_ips_nic_on(hw);
    }

    /* Dual mac */
    rtlpriv->rtlhal.load_imrandiqk_setting_for2g = false;

    rtlpriv->cfg->ops->led_control(hw, LED_CTL_SITE_SURVEY);
    rtlpriv->cfg->ops->scan_operation_backup(hw, SCAN_OPT_BACKUP);
}

static void rtl_op_sw_scan_complete(struct ieee80211_hw *hw)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_mac *mac = rtl_mac(rtl_priv(hw));

    RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "\n");
    mac->act_scanning = false;
    /* Dual mac */
    rtlpriv->rtlhal.load_imrandiqk_setting_for2g = false;

    if (mac->link_state == MAC80211_LINKED_SCANNING) {
        mac->link_state = MAC80211_LINKED;
        if (mac->opmode == NL80211_IFTYPE_STATION) {
            /* fix fwlps issue */
            rtlpriv->cfg->ops->set_network_type(hw, mac->opmode);
        }
    }

    rtlpriv->cfg->ops->scan_operation_backup(hw, SCAN_OPT_RESTORE);
}

static int rtl_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
              struct ieee80211_vif *vif, struct ieee80211_sta *sta,
              struct ieee80211_key_conf *key)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);
    struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
    u8 key_type = NO_ENCRYPTION;
    u8 key_idx;
    bool group_key = false;
    bool wep_only = false;
    int err = 0;
    u8 mac_addr[ETH_ALEN];
    u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
    u8 zero_addr[ETH_ALEN] = { 0 };

    if (rtlpriv->cfg->mod_params->sw_crypto || rtlpriv->sec.use_sw_sec) {
        RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
             "not open hw encryption\n");
        return -ENOSPC; /*User disabled HW-crypto */
    }
    RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
         "%s hardware based encryption for keyidx: %d, mac: %pM\n",
         cmd == SET_KEY ? "Using" : "Disabling", key->keyidx,
         sta ? sta->addr : bcast_addr);
    rtlpriv->sec.being_setkey = true;
    rtl_ips_nic_on(hw);
    mutex_lock(&rtlpriv->locks.conf_mutex);
    /* <1> get encryption alg */

    switch (key->cipher) {
    case WLAN_CIPHER_SUITE_WEP40:
        key_type = WEP40_ENCRYPTION;
        RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "alg:WEP40\n");
        break;
    case WLAN_CIPHER_SUITE_WEP104:
        RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "alg:WEP104\n");
        key_type = WEP104_ENCRYPTION;
        break;
    case WLAN_CIPHER_SUITE_TKIP:
        key_type = TKIP_ENCRYPTION;
        RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "alg:TKIP\n");
        break;
    case WLAN_CIPHER_SUITE_CCMP:
        key_type = AESCCMP_ENCRYPTION;
        RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "alg:CCMP\n");
        break;
    default:
        RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "alg_err:%x!!!!\n",
             key->cipher);
        goto out_unlock;
    }
    if (key_type == WEP40_ENCRYPTION ||
            key_type == WEP104_ENCRYPTION ||
            mac->opmode == NL80211_IFTYPE_ADHOC)
        rtlpriv->sec.use_defaultkey = true;

    /* <2> get key_idx */
    key_idx = (u8) (key->keyidx);
    if (key_idx > 3)
        goto out_unlock;
    /* <3> if pairwise key enable_hw_sec */
    group_key = !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE);

    /* wep always be group key, but there are two conditions:
     * 1) wep only: is just for wep enc, in this condition
     * rtlpriv->sec.pairwise_enc_algorithm == NO_ENCRYPTION
     * will be true & enable_hw_sec will be set when wep
     * ke setting.
     * 2) wep(group) + AES(pairwise): some AP like cisco
     * may use it, in this condition enable_hw_sec will not
     * be set when wep key setting */
    /* we must reset sec_info after lingked before set key,
     * or some flag will be wrong*/
    if (mac->opmode == NL80211_IFTYPE_AP) {
        if (!group_key || key_type == WEP40_ENCRYPTION ||
            key_type == WEP104_ENCRYPTION) {
            if (group_key)
                wep_only = true;
            rtlpriv->cfg->ops->enable_hw_sec(hw);
        }
    } else {
        if ((!group_key) || (mac->opmode == NL80211_IFTYPE_ADHOC) ||
             rtlpriv->sec.pairwise_enc_algorithm == NO_ENCRYPTION) {
            if (rtlpriv->sec.pairwise_enc_algorithm ==
                NO_ENCRYPTION &&
                (key_type == WEP40_ENCRYPTION ||
                key_type == WEP104_ENCRYPTION))
                wep_only = true;
            rtlpriv->sec.pairwise_enc_algorithm = key_type;
            RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
                 "set enable_hw_sec, key_type:%x(OPEN:0 WEP40:1 TKIP:2 AES:4 WEP104:5)\n",
                 key_type);
            rtlpriv->cfg->ops->enable_hw_sec(hw);
        }
    }
    /* <4> set key based on cmd */
    switch (cmd) {
    case SET_KEY:
        if (wep_only) {
            RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
                 "set WEP(group/pairwise) key\n");
            /* Pairwise key with an assigned MAC address. */
            rtlpriv->sec.pairwise_enc_algorithm = key_type;
            rtlpriv->sec.group_enc_algorithm = key_type;
            /*set local buf about wep key. */
            memcpy(rtlpriv->sec.key_buf[key_idx],
                   key->key, key->keylen);
            rtlpriv->sec.key_len[key_idx] = key->keylen;
            memcpy(mac_addr, zero_addr, ETH_ALEN);
        } else if (group_key) { /* group key */
            RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
                 "set group key\n");
            /* group key */
            rtlpriv->sec.group_enc_algorithm = key_type;
            /*set local buf about group key. */
            memcpy(rtlpriv->sec.key_buf[key_idx],
                   key->key, key->keylen);
            rtlpriv->sec.key_len[key_idx] = key->keylen;
            memcpy(mac_addr, bcast_addr, ETH_ALEN);
        } else {    /* pairwise key */
            RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
                 "set pairwise key\n");
            if (!sta) {
                RT_ASSERT(false,
                      "pairwise key without mac_addr\n");

                err = -EOPNOTSUPP;
                goto out_unlock;
            }
            /* Pairwise key with an assigned MAC address. */
            rtlpriv->sec.pairwise_enc_algorithm = key_type;
            /*set local buf about pairwise key. */
            memcpy(rtlpriv->sec.key_buf[PAIRWISE_KEYIDX],
                   key->key, key->keylen);
            rtlpriv->sec.key_len[PAIRWISE_KEYIDX] = key->keylen;
            rtlpriv->sec.pairwise_key =
                rtlpriv->sec.key_buf[PAIRWISE_KEYIDX];
            memcpy(mac_addr, sta->addr, ETH_ALEN);
        }
        rtlpriv->cfg->ops->set_key(hw, key_idx, mac_addr,
                       group_key, key_type, wep_only,
                       false);
        /* <5> tell mac80211 do something: */
        /*must use sw generate IV, or can not work !!!!. */
        key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
        key->hw_key_idx = key_idx;
        if (key_type == TKIP_ENCRYPTION)
            key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
        break;
    case DISABLE_KEY:
        RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
             "disable key delete one entry\n");
        /*set local buf about wep key. */
        if (mac->opmode == NL80211_IFTYPE_AP) {
            if (sta)
                rtl_cam_del_entry(hw, sta->addr);
        }
        memset(rtlpriv->sec.key_buf[key_idx], 0, key->keylen);
        rtlpriv->sec.key_len[key_idx] = 0;
        memcpy(mac_addr, zero_addr, ETH_ALEN);
        /*
         *mac80211 will delete entrys one by one,
         *so don't use rtl_cam_reset_all_entry
         *or clear all entry here.
         */
        rtl_cam_delete_one_entry(hw, mac_addr, key_idx);

        rtl_cam_reset_sec_info(hw);

        break;
    default:
        RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
             "cmd_err:%x!!!!\n", cmd);
    }
out_unlock:
    mutex_unlock(&rtlpriv->locks.conf_mutex);
    rtlpriv->sec.being_setkey = false;
    return err;
}

static void rtl_op_rfkill_poll(struct ieee80211_hw *hw)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);

    bool radio_state;
    bool blocked;
    u8 valid = 0;

    if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
        return;

    mutex_lock(&rtlpriv->locks.conf_mutex);

    /*if Radio On return true here */
    radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);

    if (valid) {
        if (unlikely(radio_state != rtlpriv->rfkill.rfkill_state)) {
            rtlpriv->rfkill.rfkill_state = radio_state;

            RT_TRACE(rtlpriv, COMP_RF, DBG_DMESG,
                 "wireless radio switch turned %s\n",
                 radio_state ? "on" : "off");

            blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
            wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
        }
    }

    mutex_unlock(&rtlpriv->locks.conf_mutex);
}

/* this function is called by mac80211 to flush tx buffer
 * before switch channle or power save, or tx buffer packet
 * maybe send after offchannel or rf sleep, this may cause
 * dis-association by AP */
static void rtl_op_flush(struct ieee80211_hw *hw, bool drop)
{
    struct rtl_priv *rtlpriv = rtl_priv(hw);

    if (rtlpriv->intf_ops->flush)
        rtlpriv->intf_ops->flush(hw, drop);
}

const struct ieee80211_ops rtl_ops = {
    .start = rtl_op_start,
    .stop = rtl_op_stop,
    .tx = rtl_op_tx,
    .add_interface = rtl_op_add_interface,
    .remove_interface = rtl_op_remove_interface,
    .config = rtl_op_config,
    .configure_filter = rtl_op_configure_filter,
    .sta_add = rtl_op_sta_add,
    .sta_remove = rtl_op_sta_remove,
    .set_key = rtl_op_set_key,
    .conf_tx = rtl_op_conf_tx,
    .bss_info_changed = rtl_op_bss_info_changed,
    .get_tsf = rtl_op_get_tsf,
    .set_tsf = rtl_op_set_tsf,
    .reset_tsf = rtl_op_reset_tsf,
    .sta_notify = rtl_op_sta_notify,
    .ampdu_action = rtl_op_ampdu_action,
    .sw_scan_start = rtl_op_sw_scan_start,
    .sw_scan_complete = rtl_op_sw_scan_complete,
    .rfkill_poll = rtl_op_rfkill_poll,
    .flush = rtl_op_flush,
};