drivers/net/wireless/rtlwifi/base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2012  Realtek Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  * wlanfae <wlanfae@realtek.com>
  23  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  24  * Hsinchu 300, Taiwan.
  25  *
  26  * Larry Finger <Larry.Finger@lwfinger.net>
  27  *
  28  *****************************************************************************/
  29
  30 #include "wifi.h"
  31 #include "rc.h"
  32 #include "base.h"
  33 #include "efuse.h"
  34 #include "cam.h"
  35 #include "ps.h"
  36 #include "regd.h"
  37
  38 #include <linux/ip.h>
  39 #include <linux/module.h>
  40
  41 /*
  42  *NOTICE!!!: This file will be very big, we should
  43  *keep it clear under following roles:
  44  *
  45  *This file include following parts, so, if you add new
  46  *functions into this file, please check which part it
  47  *should includes. or check if you should add new part
  48  *for this file:
  49  *
  50  *1) mac80211 init functions
  51  *2) tx information functions
  52  *3) functions called by core.c
  53  *4) wq & timer callback functions
  54  *5) frame process functions
  55  *6) IOT functions
  56  *7) sysfs functions
  57  *8) vif functions
  58  *9) ...
  59  */
  60
  61 /*********************************************************
  62  *
  63  * mac80211 init functions
  64  *
  65  *********************************************************/
  66 static struct ieee80211_channel rtl_channeltable_2g[] = {
  67         {.center_freq = 2412, .hw_value = 1,},
  68         {.center_freq = 2417, .hw_value = 2,},
  69         {.center_freq = 2422, .hw_value = 3,},
  70         {.center_freq = 2427, .hw_value = 4,},
  71         {.center_freq = 2432, .hw_value = 5,},
  72         {.center_freq = 2437, .hw_value = 6,},
  73         {.center_freq = 2442, .hw_value = 7,},
  74         {.center_freq = 2447, .hw_value = 8,},
  75         {.center_freq = 2452, .hw_value = 9,},
  76         {.center_freq = 2457, .hw_value = 10,},
  77         {.center_freq = 2462, .hw_value = 11,},
  78         {.center_freq = 2467, .hw_value = 12,},
  79         {.center_freq = 2472, .hw_value = 13,},
  80         {.center_freq = 2484, .hw_value = 14,},
  81 };
  82
  83 static struct ieee80211_channel rtl_channeltable_5g[] = {
  84         {.center_freq = 5180, .hw_value = 36,},
  85         {.center_freq = 5200, .hw_value = 40,},
  86         {.center_freq = 5220, .hw_value = 44,},
  87         {.center_freq = 5240, .hw_value = 48,},
  88         {.center_freq = 5260, .hw_value = 52,},
  89         {.center_freq = 5280, .hw_value = 56,},
  90         {.center_freq = 5300, .hw_value = 60,},
  91         {.center_freq = 5320, .hw_value = 64,},
  92         {.center_freq = 5500, .hw_value = 100,},
  93         {.center_freq = 5520, .hw_value = 104,},
  94         {.center_freq = 5540, .hw_value = 108,},
  95         {.center_freq = 5560, .hw_value = 112,},
  96         {.center_freq = 5580, .hw_value = 116,},
  97         {.center_freq = 5600, .hw_value = 120,},
  98         {.center_freq = 5620, .hw_value = 124,},
  99         {.center_freq = 5640, .hw_value = 128,},
 100         {.center_freq = 5660, .hw_value = 132,},
 101         {.center_freq = 5680, .hw_value = 136,},
 102         {.center_freq = 5700, .hw_value = 140,},
 103         {.center_freq = 5745, .hw_value = 149,},
 104         {.center_freq = 5765, .hw_value = 153,},
 105         {.center_freq = 5785, .hw_value = 157,},
 106         {.center_freq = 5805, .hw_value = 161,},
 107         {.center_freq = 5825, .hw_value = 165,},
 108 };
 109
 110 static struct ieee80211_rate rtl_ratetable_2g[] = {
 111         {.bitrate = 10, .hw_value = 0x00,},
 112         {.bitrate = 20, .hw_value = 0x01,},
 113         {.bitrate = 55, .hw_value = 0x02,},
 114         {.bitrate = 110, .hw_value = 0x03,},
 115         {.bitrate = 60, .hw_value = 0x04,},
 116         {.bitrate = 90, .hw_value = 0x05,},
 117         {.bitrate = 120, .hw_value = 0x06,},
 118         {.bitrate = 180, .hw_value = 0x07,},
 119         {.bitrate = 240, .hw_value = 0x08,},
 120         {.bitrate = 360, .hw_value = 0x09,},
 121         {.bitrate = 480, .hw_value = 0x0a,},
 122         {.bitrate = 540, .hw_value = 0x0b,},
 123 };
 124
 125 static struct ieee80211_rate rtl_ratetable_5g[] = {
 126         {.bitrate = 60, .hw_value = 0x04,},
 127         {.bitrate = 90, .hw_value = 0x05,},
 128         {.bitrate = 120, .hw_value = 0x06,},
 129         {.bitrate = 180, .hw_value = 0x07,},
 130         {.bitrate = 240, .hw_value = 0x08,},
 131         {.bitrate = 360, .hw_value = 0x09,},
 132         {.bitrate = 480, .hw_value = 0x0a,},
 133         {.bitrate = 540, .hw_value = 0x0b,},
 134 };
 135
 136 static const struct ieee80211_supported_band rtl_band_2ghz = {
 137         .band = IEEE80211_BAND_2GHZ,
 138
 139         .channels = rtl_channeltable_2g,
 140         .n_channels = ARRAY_SIZE(rtl_channeltable_2g),
 141
 142         .bitrates = rtl_ratetable_2g,
 143         .n_bitrates = ARRAY_SIZE(rtl_ratetable_2g),
 144
 145         .ht_cap = {0},
 146 };
 147
 148 static struct ieee80211_supported_band rtl_band_5ghz = {
 149         .band = IEEE80211_BAND_5GHZ,
 150
 151         .channels = rtl_channeltable_5g,
 152         .n_channels = ARRAY_SIZE(rtl_channeltable_5g),
 153
 154         .bitrates = rtl_ratetable_5g,
 155         .n_bitrates = ARRAY_SIZE(rtl_ratetable_5g),
 156
 157         .ht_cap = {0},
 158 };
 159
 160 static const u8 tid_to_ac[] = {
 161         2, /* IEEE80211_AC_BE */
 162         3, /* IEEE80211_AC_BK */
 163         3, /* IEEE80211_AC_BK */
 164         2, /* IEEE80211_AC_BE */
 165         1, /* IEEE80211_AC_VI */
 166         1, /* IEEE80211_AC_VI */
 167         0, /* IEEE80211_AC_VO */
 168         0, /* IEEE80211_AC_VO */
 169 };
 170
 171 u8 rtl_tid_to_ac(u8 tid)
 172 {
 173         return tid_to_ac[tid];
 174 }
 175 EXPORT_SYMBOL_GPL(rtl_tid_to_ac);
 176
 177 static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
 178                                   struct ieee80211_sta_ht_cap *ht_cap)
 179 {
 180         struct rtl_priv *rtlpriv = rtl_priv(hw);
 181         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 182
 183         ht_cap->ht_supported = true;
 184         ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 185             IEEE80211_HT_CAP_SGI_40 |
 186             IEEE80211_HT_CAP_SGI_20 |
 187             IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
 188
 189         if (rtlpriv->rtlhal.disable_amsdu_8k)
 190                 ht_cap->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
 191
 192         /*
 193          *Maximum length of AMPDU that the STA can receive.
 194          *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 195          */
 196         ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 197
 198         /*Minimum MPDU start spacing , */
 199         ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
 200
 201         ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 202
 203         /*hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 204          *base on ant_num
 205          *rx_mask: RX mask
 206          *if rx_ant = 1 rx_mask[0]= 0xff;==>MCS0-MCS7
 207          *if rx_ant = 2 rx_mask[1]= 0xff;==>MCS8-MCS15
 208          *if rx_ant >= 3 rx_mask[2]= 0xff;
 209          *if BW_40 rx_mask[4]= 0x01;
 210          *highest supported RX rate
 211          */
 212         if (rtlpriv->dm.supp_phymode_switch) {
 213
 214                 RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
 215                          "Support phy mode switch\n");
 216
 217                 ht_cap->mcs.rx_mask[0] = 0xFF;
 218                 ht_cap->mcs.rx_mask[1] = 0xFF;
 219                 ht_cap->mcs.rx_mask[4] = 0x01;
 220
 221                 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
 222         } else {
 223                 if (get_rf_type(rtlphy) == RF_1T2R ||
 224                     get_rf_type(rtlphy) == RF_2T2R) {
 225                         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 226                                  "1T2R or 2T2R\n");
 227                         ht_cap->mcs.rx_mask[0] = 0xFF;
 228                         ht_cap->mcs.rx_mask[1] = 0xFF;
 229                         ht_cap->mcs.rx_mask[4] = 0x01;
 230
 231                         ht_cap->mcs.rx_highest =
 232                                  cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
 233                 } else if (get_rf_type(rtlphy) == RF_1T1R) {
 234                         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "1T1R\n");
 235
 236                         ht_cap->mcs.rx_mask[0] = 0xFF;
 237                         ht_cap->mcs.rx_mask[1] = 0x00;
 238                         ht_cap->mcs.rx_mask[4] = 0x01;
 239
 240                         ht_cap->mcs.rx_highest =
 241                                  cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS7);
 242                 }
 243         }
 244 }
 245
 246 static void _rtl_init_mac80211(struct ieee80211_hw *hw)
 247 {
 248         struct rtl_priv *rtlpriv = rtl_priv(hw);
 249         struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
 250         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
 251         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 252         struct ieee80211_supported_band *sband;
 253
 254
 255         if (rtlhal->macphymode == SINGLEMAC_SINGLEPHY && rtlhal->bandset ==
 256             BAND_ON_BOTH) {
 257                 /* 1: 2.4 G bands */
 258                 /* <1> use  mac->bands as mem for hw->wiphy->bands */
 259                 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
 260
 261                 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 262                  * to default value(1T1R) */
 263                 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
 264                                 sizeof(struct ieee80211_supported_band));
 265
 266                 /* <3> init ht cap base on ant_num */
 267                 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 268
 269                 /* <4> set mac->sband to wiphy->sband */
 270                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
 271
 272                 /* 2: 5 G bands */
 273                 /* <1> use  mac->bands as mem for hw->wiphy->bands */
 274                 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
 275
 276                 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
 277                  * to default value(1T1R) */
 278                 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]), &rtl_band_5ghz,
 279                                 sizeof(struct ieee80211_supported_band));
 280
 281                 /* <3> init ht cap base on ant_num */
 282                 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 283
 284                 /* <4> set mac->sband to wiphy->sband */
 285                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
 286         } else {
 287                 if (rtlhal->current_bandtype == BAND_ON_2_4G) {
 288                         /* <1> use  mac->bands as mem for hw->wiphy->bands */
 289                         sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
 290
 291                         /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 292                          * to default value(1T1R) */
 293                         memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]),
 294                                  &rtl_band_2ghz,
 295                                  sizeof(struct ieee80211_supported_band));
 296
 297                         /* <3> init ht cap base on ant_num */
 298                         _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 299
 300                         /* <4> set mac->sband to wiphy->sband */
 301                         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
 302                 } else if (rtlhal->current_bandtype == BAND_ON_5G) {
 303                         /* <1> use  mac->bands as mem for hw->wiphy->bands */
 304                         sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
 305
 306                         /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
 307                          * to default value(1T1R) */
 308                         memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]),
 309                                  &rtl_band_5ghz,
 310                                  sizeof(struct ieee80211_supported_band));
 311
 312                         /* <3> init ht cap base on ant_num */
 313                         _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 314
 315                         /* <4> set mac->sband to wiphy->sband */
 316                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
 317                 } else {
 318                         RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG, "Err BAND %d\n",
 319                                  rtlhal->current_bandtype);
 320                 }
 321         }
 322         /* <5> set hw caps */
 323         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 324             IEEE80211_HW_RX_INCLUDES_FCS |
 325             IEEE80211_HW_AMPDU_AGGREGATION |
 326             IEEE80211_HW_CONNECTION_MONITOR |
 327             /* IEEE80211_HW_SUPPORTS_CQM_RSSI | */
 328             IEEE80211_HW_CONNECTION_MONITOR |
 329             IEEE80211_HW_MFP_CAPABLE |
 330             IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
 331
 332         /* swlps or hwlps has been set in diff chip in init_sw_vars */
 333         if (rtlpriv->psc.swctrl_lps)
 334                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
 335                         IEEE80211_HW_PS_NULLFUNC_STACK |
 336                         /* IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
 337                         0;
 338
 339         hw->wiphy->interface_modes =
 340             BIT(NL80211_IFTYPE_AP) |
 341             BIT(NL80211_IFTYPE_STATION) |
 342             BIT(NL80211_IFTYPE_ADHOC) |
 343             BIT(NL80211_IFTYPE_MESH_POINT) |
 344             BIT(NL80211_IFTYPE_P2P_CLIENT) |
 345             BIT(NL80211_IFTYPE_P2P_GO);
 346
 347         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 348         hw->wiphy->rts_threshold = 2347;
 349
 350         hw->queues = AC_MAX;
 351         hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
 352
 353         /* TODO: Correct this value for our hw */
 354         /* TODO: define these hard code value */
 355         hw->channel_change_time = 100;
 356         hw->max_listen_interval = 10;
 357         hw->max_rate_tries = 4;
 358         /* hw->max_rates = 1; */
 359         hw->sta_data_size = sizeof(struct rtl_sta_info);
 360
 361         /* <6> mac address */
 362         if (is_valid_ether_addr(rtlefuse->dev_addr)) {
 363                 SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
 364         } else {
 365                 u8 rtlmac1[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
 366                 get_random_bytes((rtlmac1 + (ETH_ALEN - 1)), 1);
 367                 SET_IEEE80211_PERM_ADDR(hw, rtlmac1);
 368         }
 369
 370 }
 371
 372 static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
 373 {
 374         struct rtl_priv *rtlpriv = rtl_priv(hw);
 375
 376         /* <1> timer */
 377         setup_timer(&rtlpriv->works.watchdog_timer,
 378                     rtl_watch_dog_timer_callback, (unsigned long)hw);
 379         setup_timer(&rtlpriv->works.dualmac_easyconcurrent_retrytimer,
 380                     rtl_easy_concurrent_retrytimer_callback, (unsigned long)hw);
 381
 382         /* <2> work queue */
 383         rtlpriv->works.hw = hw;
 384         rtlpriv->works.rtl_wq = alloc_workqueue("%s", 0, 0, rtlpriv->cfg->name);
 385         INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
 386                           (void *)rtl_watchdog_wq_callback);
 387         INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
 388                           (void *)rtl_ips_nic_off_wq_callback);
 389         INIT_DELAYED_WORK(&rtlpriv->works.ps_work,
 390                           (void *)rtl_swlps_wq_callback);
 391         INIT_DELAYED_WORK(&rtlpriv->works.ps_rfon_wq,
 392                           (void *)rtl_swlps_rfon_wq_callback);
 393         INIT_DELAYED_WORK(&rtlpriv->works.fwevt_wq,
 394                           (void *)rtl_fwevt_wq_callback);
 395
 396 }
 397
 398 void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
 399 {
 400         struct rtl_priv *rtlpriv = rtl_priv(hw);
 401
 402         del_timer_sync(&rtlpriv->works.watchdog_timer);
 403
 404         cancel_delayed_work(&rtlpriv->works.watchdog_wq);
 405         cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
 406         cancel_delayed_work(&rtlpriv->works.ps_work);
 407         cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
 408         cancel_delayed_work(&rtlpriv->works.fwevt_wq);
 409 }
 410 EXPORT_SYMBOL_GPL(rtl_deinit_deferred_work);
 411
 412 void rtl_init_rfkill(struct ieee80211_hw *hw)
 413 {
 414         struct rtl_priv *rtlpriv = rtl_priv(hw);
 415
 416         bool radio_state;
 417         bool blocked;
 418         u8 valid = 0;
 419
 420         /*set init state to on */
 421         rtlpriv->rfkill.rfkill_state = true;
 422         wiphy_rfkill_set_hw_state(hw->wiphy, 0);
 423
 424         radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
 425
 426         if (valid) {
 427                 pr_info("wireless switch is %s\n",
 428                         rtlpriv->rfkill.rfkill_state ? "on" : "off");
 429
 430                 rtlpriv->rfkill.rfkill_state = radio_state;
 431
 432                 blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
 433                 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
 434         }
 435
 436         wiphy_rfkill_start_polling(hw->wiphy);
 437 }
 438 EXPORT_SYMBOL(rtl_init_rfkill);
 439
 440 void rtl_deinit_rfkill(struct ieee80211_hw *hw)
 441 {
 442         wiphy_rfkill_stop_polling(hw->wiphy);
 443 }
 444 EXPORT_SYMBOL_GPL(rtl_deinit_rfkill);
 445
 446 int rtl_init_core(struct ieee80211_hw *hw)
 447 {
 448         struct rtl_priv *rtlpriv = rtl_priv(hw);
 449         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
 450
 451         /* <1> init mac80211 */
 452         _rtl_init_mac80211(hw);
 453         rtlmac->hw = hw;
 454
 455         /* <2> rate control register */
 456         hw->rate_control_algorithm = "rtl_rc";
 457
 458         /*
 459          * <3> init CRDA must come after init
 460          * mac80211 hw  in _rtl_init_mac80211.
 461          */
 462         if (rtl_regd_init(hw, rtl_reg_notifier)) {
 463                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "REGD init failed\n");
 464                 return 1;
 465         }
 466
 467         /* <4> locks */
 468         mutex_init(&rtlpriv->locks.conf_mutex);
 469         mutex_init(&rtlpriv->locks.ps_mutex);
 470         spin_lock_init(&rtlpriv->locks.ips_lock);
 471         spin_lock_init(&rtlpriv->locks.irq_th_lock);
 472         spin_lock_init(&rtlpriv->locks.irq_pci_lock);
 473         spin_lock_init(&rtlpriv->locks.tx_lock);
 474         spin_lock_init(&rtlpriv->locks.h2c_lock);
 475         spin_lock_init(&rtlpriv->locks.rf_ps_lock);
 476         spin_lock_init(&rtlpriv->locks.rf_lock);
 477         spin_lock_init(&rtlpriv->locks.waitq_lock);
 478         spin_lock_init(&rtlpriv->locks.entry_list_lock);
 479         spin_lock_init(&rtlpriv->locks.fw_ps_lock);
 480         spin_lock_init(&rtlpriv->locks.cck_and_rw_pagea_lock);
 481         spin_lock_init(&rtlpriv->locks.check_sendpkt_lock);
 482         spin_lock_init(&rtlpriv->locks.fw_ps_lock);
 483         spin_lock_init(&rtlpriv->locks.lps_lock);
 484
 485         /* <5> init list */
 486         INIT_LIST_HEAD(&rtlpriv->entry_list);
 487
 488         rtlmac->link_state = MAC80211_NOLINK;
 489
 490         /* <6> init deferred work */
 491         _rtl_init_deferred_work(hw);
 492
 493         return 0;
 494 }
 495 EXPORT_SYMBOL_GPL(rtl_init_core);
 496
 497 void rtl_deinit_core(struct ieee80211_hw *hw)
 498 {
 499 }
 500 EXPORT_SYMBOL_GPL(rtl_deinit_core);
 501
 502 void rtl_init_rx_config(struct ieee80211_hw *hw)
 503 {
 504         struct rtl_priv *rtlpriv = rtl_priv(hw);
 505         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 506
 507         rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
 508 }
 509 EXPORT_SYMBOL_GPL(rtl_init_rx_config);
 510
 511 /*********************************************************
 512  *
 513  * tx information functions
 514  *
 515  *********************************************************/
 516 static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
 517                                           struct rtl_tcb_desc *tcb_desc,
 518                                           struct ieee80211_tx_info *info)
 519 {
 520         struct rtl_priv *rtlpriv = rtl_priv(hw);
 521         u8 rate_flag = info->control.rates[0].flags;
 522
 523         tcb_desc->use_shortpreamble = false;
 524
 525         /* 1M can only use Long Preamble. 11B spec */
 526         if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
 527                 return;
 528         else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
 529                 tcb_desc->use_shortpreamble = true;
 530
 531         return;
 532 }
 533
 534 static void _rtl_query_shortgi(struct ieee80211_hw *hw,
 535                                struct ieee80211_sta *sta,
 536                                struct rtl_tcb_desc *tcb_desc,
 537                                struct ieee80211_tx_info *info)
 538 {
 539         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 540         u8 rate_flag = info->control.rates[0].flags;
 541         u8 sgi_40 = 0, sgi_20 = 0, bw_40 = 0;
 542         tcb_desc->use_shortgi = false;
 543
 544         if (sta == NULL)
 545                 return;
 546
 547         sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
 548         sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
 549
 550         if (!(sta->ht_cap.ht_supported))
 551                 return;
 552
 553         if (!sgi_40 && !sgi_20)
 554                 return;
 555
 556         if (mac->opmode == NL80211_IFTYPE_STATION)
 557                 bw_40 = mac->bw_40;
 558         else if (mac->opmode == NL80211_IFTYPE_AP ||
 559                  mac->opmode == NL80211_IFTYPE_ADHOC ||
 560                  mac->opmode == NL80211_IFTYPE_MESH_POINT)
 561                 bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40;
 562
 563         if (bw_40 && sgi_40)
 564                 tcb_desc->use_shortgi = true;
 565         else if ((bw_40 == false) && sgi_20)
 566                 tcb_desc->use_shortgi = true;
 567
 568         if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
 569                 tcb_desc->use_shortgi = false;
 570 }
 571
 572 static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
 573                                        struct rtl_tcb_desc *tcb_desc,
 574                                        struct ieee80211_tx_info *info)
 575 {
 576         struct rtl_priv *rtlpriv = rtl_priv(hw);
 577         u8 rate_flag = info->control.rates[0].flags;
 578
 579         /* Common Settings */
 580         tcb_desc->rts_stbc = false;
 581         tcb_desc->cts_enable = false;
 582         tcb_desc->rts_sc = 0;
 583         tcb_desc->rts_bw = false;
 584         tcb_desc->rts_use_shortpreamble = false;
 585         tcb_desc->rts_use_shortgi = false;
 586
 587         if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
 588                 /* Use CTS-to-SELF in protection mode. */
 589                 tcb_desc->rts_enable = true;
 590                 tcb_desc->cts_enable = true;
 591                 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
 592         } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
 593                 /* Use RTS-CTS in protection mode. */
 594                 tcb_desc->rts_enable = true;
 595                 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
 596         }
 597 }
 598
 599 static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
 600                                    struct ieee80211_sta *sta,
 601                                    struct rtl_tcb_desc *tcb_desc)
 602 {
 603         struct rtl_priv *rtlpriv = rtl_priv(hw);
 604         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 605         struct rtl_sta_info *sta_entry = NULL;
 606         u8 ratr_index = 7;
 607
 608         if (sta) {
 609                 sta_entry = (struct rtl_sta_info *) sta->drv_priv;
 610                 ratr_index = sta_entry->ratr_index;
 611         }
 612         if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
 613                 if (mac->opmode == NL80211_IFTYPE_STATION) {
 614                         tcb_desc->ratr_index = 0;
 615                 } else if (mac->opmode == NL80211_IFTYPE_ADHOC ||
 616                            mac->opmode == NL80211_IFTYPE_MESH_POINT) {
 617                         if (tcb_desc->multicast || tcb_desc->broadcast) {
 618                                 tcb_desc->hw_rate =
 619                                     rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
 620                                 tcb_desc->use_driver_rate = 1;
 621                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
 622                         } else {
 623                                 tcb_desc->ratr_index = ratr_index;
 624                         }
 625                 } else if (mac->opmode == NL80211_IFTYPE_AP) {
 626                         tcb_desc->ratr_index = ratr_index;
 627                 }
 628         }
 629
 630         if (rtlpriv->dm.useramask) {
 631                 tcb_desc->ratr_index = ratr_index;
 632                 /* TODO we will differentiate adhoc and station future  */
 633                 if (mac->opmode == NL80211_IFTYPE_STATION ||
 634                     mac->opmode == NL80211_IFTYPE_MESH_POINT) {
 635                         tcb_desc->mac_id = 0;
 636
 637                         if (mac->mode == WIRELESS_MODE_N_24G)
 638                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
 639                         else if (mac->mode == WIRELESS_MODE_N_5G)
 640                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_NG;
 641                         else if (mac->mode & WIRELESS_MODE_G)
 642                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
 643                         else if (mac->mode & WIRELESS_MODE_B)
 644                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
 645                         else if (mac->mode & WIRELESS_MODE_A)
 646                                 tcb_desc->ratr_index = RATR_INX_WIRELESS_G;
 647                 } else if (mac->opmode == NL80211_IFTYPE_AP ||
 648                            mac->opmode == NL80211_IFTYPE_ADHOC) {
 649                         if (NULL != sta) {
 650                                 if (sta->aid > 0)
 651                                         tcb_desc->mac_id = sta->aid + 1;
 652                                 else
 653                                         tcb_desc->mac_id = 1;
 654                         } else {
 655                                 tcb_desc->mac_id = 0;
 656                         }
 657                 }
 658         }
 659 }
 660
 661 static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
 662                                       struct ieee80211_sta *sta,
 663                                       struct rtl_tcb_desc *tcb_desc)
 664 {
 665         struct rtl_priv *rtlpriv = rtl_priv(hw);
 666         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 667
 668         tcb_desc->packet_bw = false;
 669         if (!sta)
 670                 return;
 671         if (mac->opmode == NL80211_IFTYPE_AP ||
 672             mac->opmode == NL80211_IFTYPE_ADHOC ||
 673             mac->opmode == NL80211_IFTYPE_MESH_POINT) {
 674                 if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
 675                         return;
 676         } else if (mac->opmode == NL80211_IFTYPE_STATION) {
 677                 if (!mac->bw_40 || !(sta->ht_cap.ht_supported))
 678                         return;
 679         }
 680         if (tcb_desc->multicast || tcb_desc->broadcast)
 681                 return;
 682
 683         /*use legency rate, shall use 20MHz */
 684         if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
 685                 return;
 686
 687         tcb_desc->packet_bw = true;
 688 }
 689
 690 static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
 691 {
 692         struct rtl_priv *rtlpriv = rtl_priv(hw);
 693         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 694         u8 hw_rate;
 695
 696         if (get_rf_type(rtlphy) == RF_2T2R)
 697                 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
 698         else
 699                 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
 700
 701         return hw_rate;
 702 }
 703
 704 /* mac80211's rate_idx is like this:
 705  *
 706  * 2.4G band:rx_status->band == IEEE80211_BAND_2GHZ
 707  *
 708  * B/G rate:
 709  * (rx_status->flag & RX_FLAG_HT) = 0,
 710  * DESC92_RATE1M-->DESC92_RATE54M ==> idx is 0-->11,
 711  *
 712  * N rate:
 713  * (rx_status->flag & RX_FLAG_HT) = 1,
 714  * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
 715  *
 716  * 5G band:rx_status->band == IEEE80211_BAND_5GHZ
 717  * A rate:
 718  * (rx_status->flag & RX_FLAG_HT) = 0,
 719  * DESC92_RATE6M-->DESC92_RATE54M ==> idx is 0-->7,
 720  *
 721  * N rate:
 722  * (rx_status->flag & RX_FLAG_HT) = 1,
 723  * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
 724  */
 725 int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
 726                          bool isht, u8 desc_rate, bool first_ampdu)
 727 {
 728         int rate_idx;
 729
 730         if (false == isht) {
 731                 if (IEEE80211_BAND_2GHZ == hw->conf.chandef.chan->band) {
 732                         switch (desc_rate) {
 733                         case DESC92_RATE1M:
 734                                 rate_idx = 0;
 735                                 break;
 736                         case DESC92_RATE2M:
 737                                 rate_idx = 1;
 738                                 break;
 739                         case DESC92_RATE5_5M:
 740                                 rate_idx = 2;
 741                                 break;
 742                         case DESC92_RATE11M:
 743                                 rate_idx = 3;
 744                                 break;
 745                         case DESC92_RATE6M:
 746                                 rate_idx = 4;
 747                                 break;
 748                         case DESC92_RATE9M:
 749                                 rate_idx = 5;
 750                                 break;
 751                         case DESC92_RATE12M:
 752                                 rate_idx = 6;
 753                                 break;
 754                         case DESC92_RATE18M:
 755                                 rate_idx = 7;
 756                                 break;
 757                         case DESC92_RATE24M:
 758                                 rate_idx = 8;
 759                                 break;
 760                         case DESC92_RATE36M:
 761                                 rate_idx = 9;
 762                                 break;
 763                         case DESC92_RATE48M:
 764                                 rate_idx = 10;
 765                                 break;
 766                         case DESC92_RATE54M:
 767                                 rate_idx = 11;
 768                                 break;
 769                         default:
 770                                 rate_idx = 0;
 771                                 break;
 772                         }
 773                 } else {
 774                         switch (desc_rate) {
 775                         case DESC92_RATE6M:
 776                                 rate_idx = 0;
 777                                 break;
 778                         case DESC92_RATE9M:
 779                                 rate_idx = 1;
 780                                 break;
 781                         case DESC92_RATE12M:
 782                                 rate_idx = 2;
 783                                 break;
 784                         case DESC92_RATE18M:
 785                                 rate_idx = 3;
 786                                 break;
 787                         case DESC92_RATE24M:
 788                                 rate_idx = 4;
 789                                 break;
 790                         case DESC92_RATE36M:
 791                                 rate_idx = 5;
 792                                 break;
 793                         case DESC92_RATE48M:
 794                                 rate_idx = 6;
 795                                 break;
 796                         case DESC92_RATE54M:
 797                                 rate_idx = 7;
 798                                 break;
 799                         default:
 800                                 rate_idx = 0;
 801                                 break;
 802                         }
 803                 }
 804
 805         } else {
 806
 807                 switch (desc_rate) {
 808                 case DESC92_RATEMCS0:
 809                         rate_idx = 0;
 810                         break;
 811                 case DESC92_RATEMCS1:
 812                         rate_idx = 1;
 813                         break;
 814                 case DESC92_RATEMCS2:
 815                         rate_idx = 2;
 816                         break;
 817                 case DESC92_RATEMCS3:
 818                         rate_idx = 3;
 819                         break;
 820                 case DESC92_RATEMCS4:
 821                         rate_idx = 4;
 822                         break;
 823                 case DESC92_RATEMCS5:
 824                         rate_idx = 5;
 825                         break;
 826                 case DESC92_RATEMCS6:
 827                         rate_idx = 6;
 828                         break;
 829                 case DESC92_RATEMCS7:
 830                         rate_idx = 7;
 831                         break;
 832                 case DESC92_RATEMCS8:
 833                         rate_idx = 8;
 834                         break;
 835                 case DESC92_RATEMCS9:
 836                         rate_idx = 9;
 837                         break;
 838                 case DESC92_RATEMCS10:
 839                         rate_idx = 10;
 840                         break;
 841                 case DESC92_RATEMCS11:
 842                         rate_idx = 11;
 843                         break;
 844                 case DESC92_RATEMCS12:
 845                         rate_idx = 12;
 846                         break;
 847                 case DESC92_RATEMCS13:
 848                         rate_idx = 13;
 849                         break;
 850                 case DESC92_RATEMCS14:
 851                         rate_idx = 14;
 852                         break;
 853                 case DESC92_RATEMCS15:
 854                         rate_idx = 15;
 855                         break;
 856                 default:
 857                         rate_idx = 0;
 858                         break;
 859                 }
 860         }
 861         return rate_idx;
 862 }
 863 EXPORT_SYMBOL(rtlwifi_rate_mapping);
 864
 865 bool rtl_tx_mgmt_proc(struct ieee80211_hw *hw, struct sk_buff *skb)
 866 {
 867         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
 868         struct rtl_priv *rtlpriv = rtl_priv(hw);
 869         __le16 fc = rtl_get_fc(skb);
 870
 871         if (rtlpriv->dm.supp_phymode_switch &&
 872             mac->link_state < MAC80211_LINKED &&
 873             (ieee80211_is_auth(fc) || ieee80211_is_probe_req(fc))) {
 874                 if (rtlpriv->cfg->ops->chk_switch_dmdp)
 875                         rtlpriv->cfg->ops->chk_switch_dmdp(hw);
 876         }
 877         if (ieee80211_is_auth(fc)) {
 878                 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
 879                 rtl_ips_nic_on(hw);
 880
 881                 mac->link_state = MAC80211_LINKING;
 882                 /* Dual mac */
 883                 rtlpriv->phy.need_iqk = true;
 884         }
 885
 886         return true;
 887 }
 888 EXPORT_SYMBOL_GPL(rtl_tx_mgmt_proc);
 889
 890 void rtl_get_tcb_desc(struct ieee80211_hw *hw,
 891                       struct ieee80211_tx_info *info,
 892                       struct ieee80211_sta *sta,
 893                       struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
 894 {
 895         struct rtl_priv *rtlpriv = rtl_priv(hw);
 896         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
 897         struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
 898         struct ieee80211_rate *txrate;
 899         __le16 fc = hdr->frame_control;
 900
 901         txrate = ieee80211_get_tx_rate(hw, info);
 902         if (txrate)
 903                 tcb_desc->hw_rate = txrate->hw_value;
 904         else
 905                 tcb_desc->hw_rate = 0;
 906
 907         if (ieee80211_is_data(fc)) {
 908                 /*
 909                  *we set data rate INX 0
 910                  *in rtl_rc.c   if skb is special data or
 911                  *mgt which need low data rate.
 912                  */
 913
 914                 /*
 915                  *So tcb_desc->hw_rate is just used for
 916                  *special data and mgt frames
 917                  */
 918                 if (info->control.rates[0].idx == 0 ||
 919                                 ieee80211_is_nullfunc(fc)) {
 920                         tcb_desc->use_driver_rate = true;
 921                         tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
 922
 923                         tcb_desc->disable_ratefallback = 1;
 924                 } else {
 925                         /*
 926                          *because hw will nerver use hw_rate
 927                          *when tcb_desc->use_driver_rate = false
 928                          *so we never set highest N rate here,
 929                          *and N rate will all be controlled by FW
 930                          *when tcb_desc->use_driver_rate = false
 931                          */
 932                         if (sta && (sta->ht_cap.ht_supported)) {
 933                                 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
 934                         } else {
 935                                 if (rtlmac->mode == WIRELESS_MODE_B) {
 936                                         tcb_desc->hw_rate =
 937                                            rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
 938                                 } else {
 939                                         tcb_desc->hw_rate =
 940                                            rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
 941                                 }
 942                         }
 943                 }
 944
 945                 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
 946                         tcb_desc->multicast = 1;
 947                 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
 948                         tcb_desc->broadcast = 1;
 949
 950                 _rtl_txrate_selectmode(hw, sta, tcb_desc);
 951                 _rtl_query_bandwidth_mode(hw, sta, tcb_desc);
 952                 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
 953                 _rtl_query_shortgi(hw, sta, tcb_desc, info);
 954                 _rtl_query_protection_mode(hw, tcb_desc, info);
 955         } else {
 956                 tcb_desc->use_driver_rate = true;
 957                 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
 958                 tcb_desc->disable_ratefallback = 1;
 959                 tcb_desc->mac_id = 0;
 960                 tcb_desc->packet_bw = false;
 961         }
 962 }
 963 EXPORT_SYMBOL(rtl_get_tcb_desc);
 964
 965 static bool addbareq_rx(struct ieee80211_hw *hw, struct sk_buff *skb)
 966 {
 967         struct rtl_priv *rtlpriv = rtl_priv(hw);
 968         struct ieee80211_sta *sta = NULL;
 969         struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
 970         struct rtl_sta_info *sta_entry = NULL;
 971         struct ieee80211_mgmt *mgmt = (void *)skb->data;
 972         u16 capab = 0, tid = 0;
 973         struct rtl_tid_data *tid_data;
 974         struct sk_buff *skb_delba = NULL;
 975         struct ieee80211_rx_status rx_status = { 0 };
 976
 977         rcu_read_lock();
 978         sta = rtl_find_sta(hw, hdr->addr3);
 979         if (sta == NULL) {
 980                 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_EMERG,
 981                          "sta is NULL\n");
 982                 rcu_read_unlock();
 983                 return true;
 984         }
 985
 986         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
 987         if (!sta_entry) {
 988                 rcu_read_unlock();
 989                 return true;
 990         }
 991         capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
 992         tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
 993         tid_data = &sta_entry->tids[tid];
 994         if (tid_data->agg.rx_agg_state == RTL_RX_AGG_START) {
 995                 skb_delba = rtl_make_del_ba(hw, hdr->addr2, hdr->addr3, tid);
 996                 if (skb_delba) {
 997                         rx_status.freq = hw->conf.chandef.chan->center_freq;
 998                         rx_status.band = hw->conf.chandef.chan->band;
 999                         rx_status.flag |= RX_FLAG_DECRYPTED;
1000                         rx_status.flag |= RX_FLAG_MACTIME_END;
1001                         rx_status.rate_idx = 0;
1002                         rx_status.signal = 50 + 10;
1003                         memcpy(IEEE80211_SKB_RXCB(skb_delba), &rx_status,
1004                                sizeof(rx_status));
1005                         RT_PRINT_DATA(rtlpriv, COMP_INIT, DBG_DMESG,
1006                                       "fake del\n", skb_delba->data,
1007                                       skb_delba->len);
1008                         ieee80211_rx_irqsafe(hw, skb_delba);
1009                 }
1010         }
1011         rcu_read_unlock();
1012         return false;
1013 }
1014
1015 bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
1016 {
1017         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1018         struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
1019         struct rtl_priv *rtlpriv = rtl_priv(hw);
1020         __le16 fc = hdr->frame_control;
1021         u8 *act = (u8 *)skb->data + MAC80211_3ADDR_LEN;
1022         u8 category;
1023
1024         if (!ieee80211_is_action(fc))
1025                 return true;
1026
1027         category = *act;
1028         act++;
1029         switch (category) {
1030         case ACT_CAT_BA:
1031                 switch (*act) {
1032                 case ACT_ADDBAREQ:
1033                         if (mac->act_scanning)
1034                                 return false;
1035
1036                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1037                                  "%s ACT_ADDBAREQ From :%pM\n",
1038                                  is_tx ? "Tx" : "Rx", hdr->addr2);
1039                         RT_PRINT_DATA(rtlpriv, COMP_INIT, DBG_DMESG, "req\n",
1040                                       skb->data, skb->len);
1041                         if (!is_tx)
1042                                 if (addbareq_rx(hw, skb))
1043                                         return true;
1044                         break;
1045                 case ACT_ADDBARSP:
1046                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1047                                  "%s ACT_ADDBARSP From :%pM\n",
1048                                  is_tx ? "Tx" : "Rx", hdr->addr2);
1049                         break;
1050                 case ACT_DELBA:
1051                         RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1052                                  "ACT_ADDBADEL From :%pM\n", hdr->addr2);
1053                         break;
1054                 }
1055                 break;
1056         default:
1057                 break;
1058         }
1059
1060         return true;
1061 }
1062 EXPORT_SYMBOL_GPL(rtl_action_proc);
1063
1064 /*should call before software enc*/
1065 u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
1066 {
1067         struct rtl_priv *rtlpriv = rtl_priv(hw);
1068         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1069         __le16 fc = rtl_get_fc(skb);
1070         u16 ether_type;
1071         u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
1072         const struct iphdr *ip;
1073
1074         if (!ieee80211_is_data(fc))
1075                 return false;
1076
1077
1078         ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
1079                               SNAP_SIZE + PROTOC_TYPE_SIZE);
1080         ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
1081         /*      ether_type = ntohs(ether_type); */
1082
1083         if (ETH_P_IP == ether_type) {
1084                 if (IPPROTO_UDP == ip->protocol) {
1085                         struct udphdr *udp = (struct udphdr *)((u8 *) ip +
1086                                                                (ip->ihl << 2));
1087                         if (((((u8 *) udp)[1] == 68) &&
1088                              (((u8 *) udp)[3] == 67)) ||
1089                             ((((u8 *) udp)[1] == 67) &&
1090                              (((u8 *) udp)[3] == 68))) {
1091                                 /*
1092                                  * 68 : UDP BOOTP client
1093                                  * 67 : UDP BOOTP server
1094                                  */
1095                                 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
1096                                          DBG_DMESG, "dhcp %s !!\n",
1097                                          is_tx ? "Tx" : "Rx");
1098
1099                                 if (is_tx) {
1100                                         rtlpriv->enter_ps = false;
1101                                         schedule_work(&rtlpriv->
1102                                                       works.lps_change_work);
1103                                         ppsc->last_delaylps_stamp_jiffies =
1104                                             jiffies;
1105                                 }
1106
1107                                 return true;
1108                         }
1109                 }
1110         } else if (ETH_P_ARP == ether_type) {
1111                 if (is_tx) {
1112                         rtlpriv->enter_ps = false;
1113                         schedule_work(&rtlpriv->works.lps_change_work);
1114                         ppsc->last_delaylps_stamp_jiffies = jiffies;
1115                 }
1116
1117                 return true;
1118         } else if (ETH_P_PAE == ether_type) {
1119                 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1120                          "802.1X %s EAPOL pkt!!\n", is_tx ? "Tx" : "Rx");
1121
1122                 if (is_tx) {
1123                         rtlpriv->enter_ps = false;
1124                         schedule_work(&rtlpriv->works.lps_change_work);
1125                         ppsc->last_delaylps_stamp_jiffies = jiffies;
1126                 }
1127
1128                 return true;
1129         } else if (ETH_P_IPV6 == ether_type) {
1130                 /* IPv6 */
1131                 return true;
1132         }
1133
1134         return false;
1135 }
1136 EXPORT_SYMBOL_GPL(rtl_is_special_data);
1137
1138 /*********************************************************
1139  *
1140  * functions called by core.c
1141  *
1142  *********************************************************/
1143 int rtl_tx_agg_start(struct ieee80211_hw *hw,
1144                 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
1145 {
1146         struct rtl_priv *rtlpriv = rtl_priv(hw);
1147         struct rtl_tid_data *tid_data;
1148         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1149         struct rtl_sta_info *sta_entry = NULL;
1150
1151         if (sta == NULL)
1152                 return -EINVAL;
1153
1154         if (unlikely(tid >= MAX_TID_COUNT))
1155                 return -EINVAL;
1156
1157         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1158         if (!sta_entry)
1159                 return -ENXIO;
1160         tid_data = &sta_entry->tids[tid];
1161
1162         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d seq:%d\n",
1163                  sta->addr, tid, tid_data->seq_number);
1164
1165         *ssn = tid_data->seq_number;
1166         tid_data->agg.agg_state = RTL_AGG_START;
1167
1168         ieee80211_start_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1169
1170         return 0;
1171 }
1172
1173 int rtl_tx_agg_stop(struct ieee80211_hw *hw,
1174                 struct ieee80211_sta *sta, u16 tid)
1175 {
1176         struct rtl_priv *rtlpriv = rtl_priv(hw);
1177         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1178         struct rtl_sta_info *sta_entry = NULL;
1179
1180         if (sta == NULL)
1181                 return -EINVAL;
1182
1183         if (!sta->addr) {
1184                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1185                 return -EINVAL;
1186         }
1187
1188         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1189                  sta->addr, tid);
1190
1191         if (unlikely(tid >= MAX_TID_COUNT))
1192                 return -EINVAL;
1193
1194         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1195         sta_entry->tids[tid].agg.agg_state = RTL_AGG_STOP;
1196
1197         ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1198
1199         return 0;
1200 }
1201
1202 int rtl_rx_agg_start(struct ieee80211_hw *hw,
1203                      struct ieee80211_sta *sta, u16 tid)
1204 {
1205         struct rtl_priv *rtlpriv = rtl_priv(hw);
1206         struct rtl_tid_data *tid_data;
1207         struct rtl_sta_info *sta_entry = NULL;
1208
1209         if (sta == NULL)
1210                 return -EINVAL;
1211
1212         if (unlikely(tid >= MAX_TID_COUNT))
1213                 return -EINVAL;
1214
1215         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1216         if (!sta_entry)
1217                 return -ENXIO;
1218         tid_data = &sta_entry->tids[tid];
1219
1220         RT_TRACE(rtlpriv, COMP_RECV, DBG_DMESG,
1221                  "on ra = %pM tid = %d seq:%d\n", sta->addr, tid,
1222                  tid_data->seq_number);
1223
1224         tid_data->agg.rx_agg_state = RTL_RX_AGG_START;
1225         return 0;
1226 }
1227
1228 int rtl_rx_agg_stop(struct ieee80211_hw *hw,
1229                     struct ieee80211_sta *sta, u16 tid)
1230 {
1231         struct rtl_priv *rtlpriv = rtl_priv(hw);
1232         struct rtl_sta_info *sta_entry = NULL;
1233
1234         if (sta == NULL)
1235                 return -EINVAL;
1236
1237         if (!sta->addr) {
1238                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1239                 return -EINVAL;
1240         }
1241
1242         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1243                  "on ra = %pM tid = %d\n", sta->addr, tid);
1244
1245         if (unlikely(tid >= MAX_TID_COUNT))
1246                 return -EINVAL;
1247
1248         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1249         sta_entry->tids[tid].agg.rx_agg_state = RTL_RX_AGG_STOP;
1250
1251         return 0;
1252 }
1253
1254 int rtl_tx_agg_oper(struct ieee80211_hw *hw,
1255                 struct ieee80211_sta *sta, u16 tid)
1256 {
1257         struct rtl_priv *rtlpriv = rtl_priv(hw);
1258         struct rtl_sta_info *sta_entry = NULL;
1259
1260         if (sta == NULL)
1261                 return -EINVAL;
1262
1263         if (!sta->addr) {
1264                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1265                 return -EINVAL;
1266         }
1267
1268         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1269                  sta->addr, tid);
1270
1271         if (unlikely(tid >= MAX_TID_COUNT))
1272                 return -EINVAL;
1273
1274         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1275         sta_entry->tids[tid].agg.agg_state = RTL_AGG_OPERATIONAL;
1276
1277         return 0;
1278 }
1279
1280 /*********************************************************
1281  *
1282  * wq & timer callback functions
1283  *
1284  *********************************************************/
1285 /* this function is used for roaming */
1286 void rtl_beacon_statistic(struct ieee80211_hw *hw, struct sk_buff *skb)
1287 {
1288         struct rtl_priv *rtlpriv = rtl_priv(hw);
1289         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1290
1291         if (rtlpriv->mac80211.opmode != NL80211_IFTYPE_STATION)
1292                 return;
1293
1294         if (rtlpriv->mac80211.link_state < MAC80211_LINKED)
1295                 return;
1296
1297         /* check if this really is a beacon */
1298         if (!ieee80211_is_beacon(hdr->frame_control) &&
1299             !ieee80211_is_probe_resp(hdr->frame_control))
1300                 return;
1301
1302         /* min. beacon length + FCS_LEN */
1303         if (skb->len <= 40 + FCS_LEN)
1304                 return;
1305
1306         /* and only beacons from the associated BSSID, please */
1307         if (!ether_addr_equal(hdr->addr3, rtlpriv->mac80211.bssid))
1308                 return;
1309
1310         rtlpriv->link_info.bcn_rx_inperiod++;
1311 }
1312 EXPORT_SYMBOL_GPL(rtl_beacon_statistic);
1313
1314 void rtl_watchdog_wq_callback(void *data)
1315 {
1316         struct rtl_works *rtlworks = container_of_dwork_rtl(data,
1317                                                             struct rtl_works,
1318                                                             watchdog_wq);
1319         struct ieee80211_hw *hw = rtlworks->hw;
1320         struct rtl_priv *rtlpriv = rtl_priv(hw);
1321         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1322         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1323         bool busytraffic = false;
1324         bool tx_busy_traffic = false;
1325         bool rx_busy_traffic = false;
1326         bool higher_busytraffic = false;
1327         bool higher_busyrxtraffic = false;
1328         u8 idx, tid;
1329         u32 rx_cnt_inp4eriod = 0;
1330         u32 tx_cnt_inp4eriod = 0;
1331         u32 aver_rx_cnt_inperiod = 0;
1332         u32 aver_tx_cnt_inperiod = 0;
1333         u32 aver_tidtx_inperiod[MAX_TID_COUNT] = {0};
1334         u32 tidtx_inp4eriod[MAX_TID_COUNT] = {0};
1335
1336         if (is_hal_stop(rtlhal))
1337                 return;
1338
1339         /* <1> Determine if action frame is allowed */
1340         if (mac->link_state > MAC80211_NOLINK) {
1341                 if (mac->cnt_after_linked < 20)
1342                         mac->cnt_after_linked++;
1343         } else {
1344                 mac->cnt_after_linked = 0;
1345         }
1346
1347         /*
1348          *<2> to check if traffic busy, if
1349          * busytraffic we don't change channel
1350          */
1351         if (mac->link_state >= MAC80211_LINKED) {
1352
1353                 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
1354                 for (idx = 0; idx <= 2; idx++) {
1355                         rtlpriv->link_info.num_rx_in4period[idx] =
1356                             rtlpriv->link_info.num_rx_in4period[idx + 1];
1357                         rtlpriv->link_info.num_tx_in4period[idx] =
1358                             rtlpriv->link_info.num_tx_in4period[idx + 1];
1359                 }
1360                 rtlpriv->link_info.num_rx_in4period[3] =
1361                     rtlpriv->link_info.num_rx_inperiod;
1362                 rtlpriv->link_info.num_tx_in4period[3] =
1363                     rtlpriv->link_info.num_tx_inperiod;
1364                 for (idx = 0; idx <= 3; idx++) {
1365                         rx_cnt_inp4eriod +=
1366                             rtlpriv->link_info.num_rx_in4period[idx];
1367                         tx_cnt_inp4eriod +=
1368                             rtlpriv->link_info.num_tx_in4period[idx];
1369                 }
1370                 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
1371                 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
1372
1373                 /* (2) check traffic busy */
1374                 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100) {
1375                         busytraffic = true;
1376                         if (aver_rx_cnt_inperiod > aver_tx_cnt_inperiod)
1377                                 rx_busy_traffic = true;
1378                         else
1379                                 tx_busy_traffic = false;
1380                 }
1381
1382                 /* Higher Tx/Rx data. */
1383                 if (aver_rx_cnt_inperiod > 4000 ||
1384                     aver_tx_cnt_inperiod > 4000) {
1385                         higher_busytraffic = true;
1386
1387                         /* Extremely high Rx data. */
1388                         if (aver_rx_cnt_inperiod > 5000)
1389                                 higher_busyrxtraffic = true;
1390                 }
1391
1392                 /* check every tid's tx traffic */
1393                 for (tid = 0; tid <= 7; tid++) {
1394                         for (idx = 0; idx <= 2; idx++)
1395                                 rtlpriv->link_info.tidtx_in4period[tid][idx] =
1396                                   rtlpriv->link_info.tidtx_in4period[tid]
1397                                   [idx + 1];
1398                         rtlpriv->link_info.tidtx_in4period[tid][3] =
1399                                 rtlpriv->link_info.tidtx_inperiod[tid];
1400
1401                         for (idx = 0; idx <= 3; idx++)
1402                                 tidtx_inp4eriod[tid] +=
1403                                   rtlpriv->link_info.tidtx_in4period[tid][idx];
1404                         aver_tidtx_inperiod[tid] = tidtx_inp4eriod[tid] / 4;
1405                         if (aver_tidtx_inperiod[tid] > 5000)
1406                                 rtlpriv->link_info.higher_busytxtraffic[tid] =
1407                                                    true;
1408                         else
1409                                 rtlpriv->link_info.higher_busytxtraffic[tid] =
1410                                                    false;
1411                 }
1412
1413                 if (((rtlpriv->link_info.num_rx_inperiod +
1414                       rtlpriv->link_info.num_tx_inperiod) > 8) ||
1415                     (rtlpriv->link_info.num_rx_inperiod > 2))
1416                         rtlpriv->enter_ps = true;
1417                 else
1418                         rtlpriv->enter_ps = false;
1419
1420                 /* LeisurePS only work in infra mode. */
1421                 schedule_work(&rtlpriv->works.lps_change_work);
1422         }
1423
1424         rtlpriv->link_info.num_rx_inperiod = 0;
1425         rtlpriv->link_info.num_tx_inperiod = 0;
1426         for (tid = 0; tid <= 7; tid++)
1427                 rtlpriv->link_info.tidtx_inperiod[tid] = 0;
1428
1429         rtlpriv->link_info.busytraffic = busytraffic;
1430         rtlpriv->link_info.higher_busytraffic = higher_busytraffic;
1431         rtlpriv->link_info.rx_busy_traffic = rx_busy_traffic;
1432         rtlpriv->link_info.tx_busy_traffic = tx_busy_traffic;
1433         rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic;
1434
1435         /* <3> DM */
1436         rtlpriv->cfg->ops->dm_watchdog(hw);
1437
1438         /* <4> roaming */
1439         if (mac->link_state == MAC80211_LINKED &&
1440             mac->opmode == NL80211_IFTYPE_STATION) {
1441                 if ((rtlpriv->link_info.bcn_rx_inperiod +
1442                      rtlpriv->link_info.num_rx_inperiod) == 0) {
1443                         rtlpriv->link_info.roam_times++;
1444                         RT_TRACE(rtlpriv, COMP_ERR, DBG_DMESG,
1445                                  "AP off for %d s\n",
1446                                  (rtlpriv->link_info.roam_times * 2));
1447
1448                         /* if we can't recv beacon for 6s, we should
1449                          * reconnect this AP
1450                          */
1451                         if (rtlpriv->link_info.roam_times >= 3) {
1452                                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1453                                          "AP off, try to reconnect now\n");
1454                                 rtlpriv->link_info.roam_times = 0;
1455                                 ieee80211_connection_loss(rtlpriv->mac80211.vif);
1456                         }
1457                 } else {
1458                         rtlpriv->link_info.roam_times = 0;
1459                 }
1460         }
1461         rtlpriv->link_info.bcn_rx_inperiod = 0;
1462 }
1463
1464 void rtl_watch_dog_timer_callback(unsigned long data)
1465 {
1466         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1467         struct rtl_priv *rtlpriv = rtl_priv(hw);
1468
1469         queue_delayed_work(rtlpriv->works.rtl_wq,
1470                            &rtlpriv->works.watchdog_wq, 0);
1471
1472         mod_timer(&rtlpriv->works.watchdog_timer,
1473                   jiffies + MSECS(RTL_WATCH_DOG_TIME));
1474 }
1475
1476 void rtl_fwevt_wq_callback(void *data)
1477 {
1478         struct rtl_works *rtlworks =
1479                 container_of_dwork_rtl(data, struct rtl_works, fwevt_wq);
1480         struct ieee80211_hw *hw = rtlworks->hw;
1481         struct rtl_priv *rtlpriv = rtl_priv(hw);
1482
1483         rtlpriv->cfg->ops->c2h_command_handle(hw);
1484 }
1485
1486 void rtl_easy_concurrent_retrytimer_callback(unsigned long data)
1487 {
1488         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1489         struct rtl_priv *rtlpriv = rtl_priv(hw);
1490         struct rtl_priv *buddy_priv = rtlpriv->buddy_priv;
1491
1492         if (buddy_priv == NULL)
1493                 return;
1494
1495         rtlpriv->cfg->ops->dualmac_easy_concurrent(hw);
1496 }
1497
1498 /*********************************************************
1499  *
1500  * frame process functions
1501  *
1502  *********************************************************/
1503 u8 *rtl_find_ie(u8 *data, unsigned int len, u8 ie)
1504 {
1505         struct ieee80211_mgmt *mgmt = (void *)data;
1506         u8 *pos, *end;
1507
1508         pos = (u8 *)mgmt->u.beacon.variable;
1509         end = data + len;
1510         while (pos < end) {
1511                 if (pos + 2 + pos[1] > end)
1512                         return NULL;
1513
1514                 if (pos[0] == ie)
1515                         return pos;
1516
1517                 pos += 2 + pos[1];
1518         }
1519         return NULL;
1520 }
1521
1522 /* when we use 2 rx ants we send IEEE80211_SMPS_OFF */
1523 /* when we use 1 rx ant we send IEEE80211_SMPS_STATIC */
1524 static struct sk_buff *rtl_make_smps_action(struct ieee80211_hw *hw,
1525                 enum ieee80211_smps_mode smps, u8 *da, u8 *bssid)
1526 {
1527         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1528         struct sk_buff *skb;
1529         struct ieee80211_mgmt *action_frame;
1530
1531         /* 27 = header + category + action + smps mode */
1532         skb = dev_alloc_skb(27 + hw->extra_tx_headroom);
1533         if (!skb)
1534                 return NULL;
1535
1536         skb_reserve(skb, hw->extra_tx_headroom);
1537         action_frame = (void *)skb_put(skb, 27);
1538         memset(action_frame, 0, 27);
1539         memcpy(action_frame->da, da, ETH_ALEN);
1540         memcpy(action_frame->sa, rtlefuse->dev_addr, ETH_ALEN);
1541         memcpy(action_frame->bssid, bssid, ETH_ALEN);
1542         action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1543                                                   IEEE80211_STYPE_ACTION);
1544         action_frame->u.action.category = WLAN_CATEGORY_HT;
1545         action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS;
1546         switch (smps) {
1547         case IEEE80211_SMPS_AUTOMATIC:/* 0 */
1548         case IEEE80211_SMPS_NUM_MODES:/* 4 */
1549                 WARN_ON(1);
1550         case IEEE80211_SMPS_OFF:/* 1 */ /*MIMO_PS_NOLIMIT*/
1551                 action_frame->u.action.u.ht_smps.smps_control =
1552                                 WLAN_HT_SMPS_CONTROL_DISABLED;/* 0 */
1553                 break;
1554         case IEEE80211_SMPS_STATIC:/* 2 */ /*MIMO_PS_STATIC*/
1555                 action_frame->u.action.u.ht_smps.smps_control =
1556                                 WLAN_HT_SMPS_CONTROL_STATIC;/* 1 */
1557                 break;
1558         case IEEE80211_SMPS_DYNAMIC:/* 3 */ /*MIMO_PS_DYNAMIC*/
1559                 action_frame->u.action.u.ht_smps.smps_control =
1560                                 WLAN_HT_SMPS_CONTROL_DYNAMIC;/* 3 */
1561                 break;
1562         }
1563
1564         return skb;
1565 }
1566
1567 int rtl_send_smps_action(struct ieee80211_hw *hw,
1568                 struct ieee80211_sta *sta,
1569                 enum ieee80211_smps_mode smps)
1570 {
1571         struct rtl_priv *rtlpriv = rtl_priv(hw);
1572         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1573         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1574         struct sk_buff *skb = NULL;
1575         struct rtl_tcb_desc tcb_desc;
1576         u8 bssid[ETH_ALEN] = {0};
1577
1578         memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1579
1580         if (rtlpriv->mac80211.act_scanning)
1581                 goto err_free;
1582
1583         if (!sta)
1584                 goto err_free;
1585
1586         if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
1587                 goto err_free;
1588
1589         if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
1590                 goto err_free;
1591
1592         if (rtlpriv->mac80211.opmode == NL80211_IFTYPE_AP)
1593                 memcpy(bssid, rtlpriv->efuse.dev_addr, ETH_ALEN);
1594         else
1595                 memcpy(bssid, rtlpriv->mac80211.bssid, ETH_ALEN);
1596
1597         skb = rtl_make_smps_action(hw, smps, sta->addr, bssid);
1598         /* this is a type = mgmt * stype = action frame */
1599         if (skb) {
1600                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1601                 struct rtl_sta_info *sta_entry =
1602                         (struct rtl_sta_info *) sta->drv_priv;
1603                 sta_entry->mimo_ps = smps;
1604
1605                 info->control.rates[0].idx = 0;
1606                 info->band = hw->conf.chandef.chan->band;
1607                 rtlpriv->intf_ops->adapter_tx(hw, sta, skb, &tcb_desc);
1608         }
1609         return 1;
1610
1611 err_free:
1612         return 0;
1613 }
1614 EXPORT_SYMBOL(rtl_send_smps_action);
1615
1616 /* There seem to be issues in mac80211 regarding when del ba frames can be
1617  * received. As a work around, we make a fake del_ba if we receive a ba_req;
1618  * however, rx_agg was opened to let mac80211 release some ba related
1619  * resources. This del_ba is for tx only.
1620  */
1621 struct sk_buff *rtl_make_del_ba(struct ieee80211_hw *hw,
1622                                 u8 *sa, u8 *bssid, u16 tid)
1623 {
1624         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1625         struct sk_buff *skb;
1626         struct ieee80211_mgmt *action_frame;
1627         u16 params;
1628
1629         /* 27 = header + category + action + smps mode */
1630         skb = dev_alloc_skb(34 + hw->extra_tx_headroom);
1631         if (!skb)
1632                 return NULL;
1633
1634         skb_reserve(skb, hw->extra_tx_headroom);
1635         action_frame = (void *)skb_put(skb, 34);
1636         memset(action_frame, 0, 34);
1637         memcpy(action_frame->sa, sa, ETH_ALEN);
1638         memcpy(action_frame->da, rtlefuse->dev_addr, ETH_ALEN);
1639         memcpy(action_frame->bssid, bssid, ETH_ALEN);
1640         action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1641                                                   IEEE80211_STYPE_ACTION);
1642         action_frame->u.action.category = WLAN_CATEGORY_BACK;
1643         action_frame->u.action.u.delba.action_code = WLAN_ACTION_DELBA;
1644         params = (u16)(1 << 11);        /* bit 11 initiator */
1645         params |= (u16)(tid << 12);             /* bit 15:12 TID number */
1646
1647         action_frame->u.action.u.delba.params = cpu_to_le16(params);
1648         action_frame->u.action.u.delba.reason_code =
1649                 cpu_to_le16(WLAN_REASON_QSTA_TIMEOUT);
1650
1651         return skb;
1652 }
1653
1654 /*********************************************************
1655  *
1656  * IOT functions
1657  *
1658  *********************************************************/
1659 static bool rtl_chk_vendor_ouisub(struct ieee80211_hw *hw,
1660                 struct octet_string vendor_ie)
1661 {
1662         struct rtl_priv *rtlpriv = rtl_priv(hw);
1663         bool matched = false;
1664         static u8 athcap_1[] = { 0x00, 0x03, 0x7F };
1665         static u8 athcap_2[] = { 0x00, 0x13, 0x74 };
1666         static u8 broadcap_1[] = { 0x00, 0x10, 0x18 };
1667         static u8 broadcap_2[] = { 0x00, 0x0a, 0xf7 };
1668         static u8 broadcap_3[] = { 0x00, 0x05, 0xb5 };
1669         static u8 racap[] = { 0x00, 0x0c, 0x43 };
1670         static u8 ciscocap[] = { 0x00, 0x40, 0x96 };
1671         static u8 marvcap[] = { 0x00, 0x50, 0x43 };
1672
1673         if (memcmp(vendor_ie.octet, athcap_1, 3) == 0 ||
1674                 memcmp(vendor_ie.octet, athcap_2, 3) == 0) {
1675                 rtlpriv->mac80211.vendor = PEER_ATH;
1676                 matched = true;
1677         } else if (memcmp(vendor_ie.octet, broadcap_1, 3) == 0 ||
1678                 memcmp(vendor_ie.octet, broadcap_2, 3) == 0 ||
1679                 memcmp(vendor_ie.octet, broadcap_3, 3) == 0) {
1680                 rtlpriv->mac80211.vendor = PEER_BROAD;
1681                 matched = true;
1682         } else if (memcmp(vendor_ie.octet, racap, 3) == 0) {
1683                 rtlpriv->mac80211.vendor = PEER_RAL;
1684                 matched = true;
1685         } else if (memcmp(vendor_ie.octet, ciscocap, 3) == 0) {
1686                 rtlpriv->mac80211.vendor = PEER_CISCO;
1687                 matched = true;
1688         } else if (memcmp(vendor_ie.octet, marvcap, 3) == 0) {
1689                 rtlpriv->mac80211.vendor = PEER_MARV;
1690                 matched = true;
1691         }
1692
1693         return matched;
1694 }
1695
1696 static bool rtl_find_221_ie(struct ieee80211_hw *hw, u8 *data,
1697                 unsigned int len)
1698 {
1699         struct ieee80211_mgmt *mgmt = (void *)data;
1700         struct octet_string vendor_ie;
1701         u8 *pos, *end;
1702
1703         pos = (u8 *)mgmt->u.beacon.variable;
1704         end = data + len;
1705         while (pos < end) {
1706                 if (pos[0] == 221) {
1707                         vendor_ie.length = pos[1];
1708                         vendor_ie.octet = &pos[2];
1709                         if (rtl_chk_vendor_ouisub(hw, vendor_ie))
1710                                 return true;
1711                 }
1712
1713                 if (pos + 2 + pos[1] > end)
1714                         return false;
1715
1716                 pos += 2 + pos[1];
1717         }
1718         return false;
1719 }
1720
1721 void rtl_recognize_peer(struct ieee80211_hw *hw, u8 *data, unsigned int len)
1722 {
1723         struct rtl_priv *rtlpriv = rtl_priv(hw);
1724         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1725         struct ieee80211_hdr *hdr = (void *)data;
1726         u32 vendor = PEER_UNKNOWN;
1727
1728         static u8 ap3_1[3] = { 0x00, 0x14, 0xbf };
1729         static u8 ap3_2[3] = { 0x00, 0x1a, 0x70 };
1730         static u8 ap3_3[3] = { 0x00, 0x1d, 0x7e };
1731         static u8 ap4_1[3] = { 0x00, 0x90, 0xcc };
1732         static u8 ap4_2[3] = { 0x00, 0x0e, 0x2e };
1733         static u8 ap4_3[3] = { 0x00, 0x18, 0x02 };
1734         static u8 ap4_4[3] = { 0x00, 0x17, 0x3f };
1735         static u8 ap4_5[3] = { 0x00, 0x1c, 0xdf };
1736         static u8 ap5_1[3] = { 0x00, 0x1c, 0xf0 };
1737         static u8 ap5_2[3] = { 0x00, 0x21, 0x91 };
1738         static u8 ap5_3[3] = { 0x00, 0x24, 0x01 };
1739         static u8 ap5_4[3] = { 0x00, 0x15, 0xe9 };
1740         static u8 ap5_5[3] = { 0x00, 0x17, 0x9A };
1741         static u8 ap5_6[3] = { 0x00, 0x18, 0xE7 };
1742         static u8 ap6_1[3] = { 0x00, 0x17, 0x94 };
1743         static u8 ap7_1[3] = { 0x00, 0x14, 0xa4 };
1744
1745         if (mac->opmode != NL80211_IFTYPE_STATION)
1746                 return;
1747
1748         if (mac->link_state == MAC80211_NOLINK) {
1749                 mac->vendor = PEER_UNKNOWN;
1750                 return;
1751         }
1752
1753         if (mac->cnt_after_linked > 2)
1754                 return;
1755
1756         /* check if this really is a beacon */
1757         if (!ieee80211_is_beacon(hdr->frame_control))
1758                 return;
1759
1760         /* min. beacon length + FCS_LEN */
1761         if (len <= 40 + FCS_LEN)
1762                 return;
1763
1764         /* and only beacons from the associated BSSID, please */
1765         if (!ether_addr_equal(hdr->addr3, rtlpriv->mac80211.bssid))
1766                 return;
1767
1768         if (rtl_find_221_ie(hw, data, len))
1769                 vendor = mac->vendor;
1770
1771         if ((memcmp(mac->bssid, ap5_1, 3) == 0) ||
1772                 (memcmp(mac->bssid, ap5_2, 3) == 0) ||
1773                 (memcmp(mac->bssid, ap5_3, 3) == 0) ||
1774                 (memcmp(mac->bssid, ap5_4, 3) == 0) ||
1775                 (memcmp(mac->bssid, ap5_5, 3) == 0) ||
1776                 (memcmp(mac->bssid, ap5_6, 3) == 0) ||
1777                 vendor == PEER_ATH) {
1778                 vendor = PEER_ATH;
1779                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ath find\n");
1780         } else if ((memcmp(mac->bssid, ap4_4, 3) == 0) ||
1781                 (memcmp(mac->bssid, ap4_5, 3) == 0) ||
1782                 (memcmp(mac->bssid, ap4_1, 3) == 0) ||
1783                 (memcmp(mac->bssid, ap4_2, 3) == 0) ||
1784                 (memcmp(mac->bssid, ap4_3, 3) == 0) ||
1785                 vendor == PEER_RAL) {
1786                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ral find\n");
1787                 vendor = PEER_RAL;
1788         } else if (memcmp(mac->bssid, ap6_1, 3) == 0 ||
1789                 vendor == PEER_CISCO) {
1790                 vendor = PEER_CISCO;
1791                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>cisco find\n");
1792         } else if ((memcmp(mac->bssid, ap3_1, 3) == 0) ||
1793                 (memcmp(mac->bssid, ap3_2, 3) == 0) ||
1794                 (memcmp(mac->bssid, ap3_3, 3) == 0) ||
1795                 vendor == PEER_BROAD) {
1796                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>broad find\n");
1797                 vendor = PEER_BROAD;
1798         } else if (memcmp(mac->bssid, ap7_1, 3) == 0 ||
1799                 vendor == PEER_MARV) {
1800                 vendor = PEER_MARV;
1801                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>marv find\n");
1802         }
1803
1804         mac->vendor = vendor;
1805 }
1806 EXPORT_SYMBOL_GPL(rtl_recognize_peer);
1807
1808 /*********************************************************
1809  *
1810  * sysfs functions
1811  *
1812  *********************************************************/
1813 static ssize_t rtl_show_debug_level(struct device *d,
1814                                     struct device_attribute *attr, char *buf)
1815 {
1816         struct ieee80211_hw *hw = dev_get_drvdata(d);
1817         struct rtl_priv *rtlpriv = rtl_priv(hw);
1818
1819         return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
1820 }
1821
1822 static ssize_t rtl_store_debug_level(struct device *d,
1823                                      struct device_attribute *attr,
1824                                      const char *buf, size_t count)
1825 {
1826         struct ieee80211_hw *hw = dev_get_drvdata(d);
1827         struct rtl_priv *rtlpriv = rtl_priv(hw);
1828         unsigned long val;
1829         int ret;
1830
1831         ret = kstrtoul(buf, 0, &val);
1832         if (ret) {
1833                 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
1834         } else {
1835                 rtlpriv->dbg.global_debuglevel = val;
1836                 printk(KERN_DEBUG "debuglevel:%x\n",
1837                        rtlpriv->dbg.global_debuglevel);
1838         }
1839
1840         return strnlen(buf, count);
1841 }
1842
1843 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1844                    rtl_show_debug_level, rtl_store_debug_level);
1845
1846 static struct attribute *rtl_sysfs_entries[] = {
1847
1848         &dev_attr_debug_level.attr,
1849
1850         NULL
1851 };
1852
1853 /*
1854  * "name" is folder name witch will be
1855  * put in device directory like :
1856  * sys/devices/pci0000:00/0000:00:1c.4/
1857  * 0000:06:00.0/rtl_sysfs
1858  */
1859 struct attribute_group rtl_attribute_group = {
1860         .name = "rtlsysfs",
1861         .attrs = rtl_sysfs_entries,
1862 };
1863 EXPORT_SYMBOL_GPL(rtl_attribute_group);
1864
1865 MODULE_AUTHOR("lizhaoming       <chaoming_li@realsil.com.cn>");
1866 MODULE_AUTHOR("Realtek WlanFAE  <wlanfae@realtek.com>");
1867 MODULE_AUTHOR("Larry Finger     <Larry.FInger@lwfinger.net>");
1868 MODULE_LICENSE("GPL");
1869 MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
1870
1871 struct rtl_global_var rtl_global_var = {};
1872 EXPORT_SYMBOL_GPL(rtl_global_var);
1873
1874 static int __init rtl_core_module_init(void)
1875 {
1876         if (rtl_rate_control_register())
1877                 pr_err("Unable to register rtl_rc, use default RC !!\n");
1878
1879         /* init some global vars */
1880         INIT_LIST_HEAD(&rtl_global_var.glb_priv_list);
1881         spin_lock_init(&rtl_global_var.glb_list_lock);
1882
1883         return 0;
1884 }
1885
1886 static void __exit rtl_core_module_exit(void)
1887 {
1888         /*RC*/
1889         rtl_rate_control_unregister();
1890 }
1891
1892 module_init(rtl_core_module_init);
1893 module_exit(rtl_core_module_exit);