IEEE80211_OFDM_RATE_24MB | IEEE80211_BASIC_RATE_MASK
 };
 
-int cckrates_included(unsigned char *rate, int ratelen)
-{
-       int     i;
-
-       for (i = 0; i < ratelen; i++) {
-               if  ((((rate[i]) & 0x7f) == 2)  || (((rate[i]) & 0x7f) == 4) ||
-                    (((rate[i]) & 0x7f) == 11)  || (((rate[i]) & 0x7f) == 22))
-                       return true;
-       }
-
-       return false;
-}
-
-int cckratesonly_included(unsigned char *rate, int ratelen)
-{
-       int     i;
-
-       for (i = 0; i < ratelen; i++) {
-               if  ((((rate[i]) & 0x7f) != 2) && (((rate[i]) & 0x7f) != 4) &&
-                    (((rate[i]) & 0x7f) != 11)  && (((rate[i]) & 0x7f) != 22))
-                       return false;
-       }
-
-       return true;
-}
-
 u8 networktype_to_raid_ex(struct adapter *adapter, struct sta_info *psta)
 {
        u8 raid, cur_rf_type, rf_type = RF_1T1R;
 
 void update_wireless_mode(struct adapter *padapter)
 {
-       int ratelen, network_type = 0;
+       int network_type = 0;
        u32 SIFS_Timer;
        struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
        struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
        struct wlan_bssid_ex            *cur_network = &(pmlmeinfo->network);
        unsigned char           *rate = cur_network->SupportedRates;
 
-       ratelen = rtw_get_rateset_len(cur_network->SupportedRates);
-
        if ((pmlmeinfo->HT_info_enable) && (pmlmeinfo->HT_caps_enable))
                pmlmeinfo->HT_enable = 1;
 
                else if (pmlmeinfo->HT_enable)
                        network_type = WIRELESS_11_24N;
 
-               if ((cckratesonly_included(rate, ratelen)) == true)
+               if (rtw_is_cckratesonly_included(rate))
                        network_type |= WIRELESS_11B;
-               else if ((cckrates_included(rate, ratelen)) == true)
+               else if (rtw_is_cckrates_included(rate))
                        network_type |= WIRELESS_11BG;
                else
                        network_type |= WIRELESS_11G;
 
                DBG_871X("%s set_sa_query_timer(%p, %d)\n", __func__, (mlmeext), (ms)); \
                _set_timer(&(mlmeext)->sa_query_timer, (ms)); \
        } while (0)
-extern int cckrates_included(unsigned char *rate, int ratelen);
-extern int cckratesonly_included(unsigned char *rate, int ratelen);
 
 extern void process_addba_req(struct adapter *padapter, u8 *paddba_req, u8 *addr);