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 #include <linux/udp.h>
  41
  42 /*
  43  *NOTICE!!!: This file will be very big, we should
  44  *keep it clear under following roles:
  45  *
  46  *This file include following parts, so, if you add new
  47  *functions into this file, please check which part it
  48  *should includes. or check if you should add new part
  49  *for this file:
  50  *
  51  *1) mac80211 init functions
  52  *2) tx information functions
  53  *3) functions called by core.c
  54  *4) wq & timer callback functions
  55  *5) frame process functions
  56  *6) IOT functions
  57  *7) sysfs functions
  58  *8) vif functions
  59  *9) ...
  60  */
  61
  62 /*********************************************************
  63  *
  64  * mac80211 init functions
  65  *
  66  *********************************************************/
  67 static struct ieee80211_channel rtl_channeltable_2g[] = {
  68         {.center_freq = 2412, .hw_value = 1,},
  69         {.center_freq = 2417, .hw_value = 2,},
  70         {.center_freq = 2422, .hw_value = 3,},
  71         {.center_freq = 2427, .hw_value = 4,},
  72         {.center_freq = 2432, .hw_value = 5,},
  73         {.center_freq = 2437, .hw_value = 6,},
  74         {.center_freq = 2442, .hw_value = 7,},
  75         {.center_freq = 2447, .hw_value = 8,},
  76         {.center_freq = 2452, .hw_value = 9,},
  77         {.center_freq = 2457, .hw_value = 10,},
  78         {.center_freq = 2462, .hw_value = 11,},
  79         {.center_freq = 2467, .hw_value = 12,},
  80         {.center_freq = 2472, .hw_value = 13,},
  81         {.center_freq = 2484, .hw_value = 14,},
  82 };
  83
  84 static struct ieee80211_channel rtl_channeltable_5g[] = {
  85         {.center_freq = 5180, .hw_value = 36,},
  86         {.center_freq = 5200, .hw_value = 40,},
  87         {.center_freq = 5220, .hw_value = 44,},
  88         {.center_freq = 5240, .hw_value = 48,},
  89         {.center_freq = 5260, .hw_value = 52,},
  90         {.center_freq = 5280, .hw_value = 56,},
  91         {.center_freq = 5300, .hw_value = 60,},
  92         {.center_freq = 5320, .hw_value = 64,},
  93         {.center_freq = 5500, .hw_value = 100,},
  94         {.center_freq = 5520, .hw_value = 104,},
  95         {.center_freq = 5540, .hw_value = 108,},
  96         {.center_freq = 5560, .hw_value = 112,},
  97         {.center_freq = 5580, .hw_value = 116,},
  98         {.center_freq = 5600, .hw_value = 120,},
  99         {.center_freq = 5620, .hw_value = 124,},
 100         {.center_freq = 5640, .hw_value = 128,},
 101         {.center_freq = 5660, .hw_value = 132,},
 102         {.center_freq = 5680, .hw_value = 136,},
 103         {.center_freq = 5700, .hw_value = 140,},
 104         {.center_freq = 5745, .hw_value = 149,},
 105         {.center_freq = 5765, .hw_value = 153,},
 106         {.center_freq = 5785, .hw_value = 157,},
 107         {.center_freq = 5805, .hw_value = 161,},
 108         {.center_freq = 5825, .hw_value = 165,},
 109 };
 110
 111 static struct ieee80211_rate rtl_ratetable_2g[] = {
 112         {.bitrate = 10, .hw_value = 0x00,},
 113         {.bitrate = 20, .hw_value = 0x01,},
 114         {.bitrate = 55, .hw_value = 0x02,},
 115         {.bitrate = 110, .hw_value = 0x03,},
 116         {.bitrate = 60, .hw_value = 0x04,},
 117         {.bitrate = 90, .hw_value = 0x05,},
 118         {.bitrate = 120, .hw_value = 0x06,},
 119         {.bitrate = 180, .hw_value = 0x07,},
 120         {.bitrate = 240, .hw_value = 0x08,},
 121         {.bitrate = 360, .hw_value = 0x09,},
 122         {.bitrate = 480, .hw_value = 0x0a,},
 123         {.bitrate = 540, .hw_value = 0x0b,},
 124 };
 125
 126 static struct ieee80211_rate rtl_ratetable_5g[] = {
 127         {.bitrate = 60, .hw_value = 0x04,},
 128         {.bitrate = 90, .hw_value = 0x05,},
 129         {.bitrate = 120, .hw_value = 0x06,},
 130         {.bitrate = 180, .hw_value = 0x07,},
 131         {.bitrate = 240, .hw_value = 0x08,},
 132         {.bitrate = 360, .hw_value = 0x09,},
 133         {.bitrate = 480, .hw_value = 0x0a,},
 134         {.bitrate = 540, .hw_value = 0x0b,},
 135 };
 136
 137 static const struct ieee80211_supported_band rtl_band_2ghz = {
 138         .band = IEEE80211_BAND_2GHZ,
 139
 140         .channels = rtl_channeltable_2g,
 141         .n_channels = ARRAY_SIZE(rtl_channeltable_2g),
 142
 143         .bitrates = rtl_ratetable_2g,
 144         .n_bitrates = ARRAY_SIZE(rtl_ratetable_2g),
 145
 146         .ht_cap = {0},
 147 };
 148
 149 static struct ieee80211_supported_band rtl_band_5ghz = {
 150         .band = IEEE80211_BAND_5GHZ,
 151
 152         .channels = rtl_channeltable_5g,
 153         .n_channels = ARRAY_SIZE(rtl_channeltable_5g),
 154
 155         .bitrates = rtl_ratetable_5g,
 156         .n_bitrates = ARRAY_SIZE(rtl_ratetable_5g),
 157
 158         .ht_cap = {0},
 159 };
 160
 161 static const u8 tid_to_ac[] = {
 162         2, /* IEEE80211_AC_BE */
 163         3, /* IEEE80211_AC_BK */
 164         3, /* IEEE80211_AC_BK */
 165         2, /* IEEE80211_AC_BE */
 166         1, /* IEEE80211_AC_VI */
 167         1, /* IEEE80211_AC_VI */
 168         0, /* IEEE80211_AC_VO */
 169         0, /* IEEE80211_AC_VO */
 170 };
 171
 172 u8 rtl_tid_to_ac(u8 tid)
 173 {
 174         return tid_to_ac[tid];
 175 }
 176 EXPORT_SYMBOL_GPL(rtl_tid_to_ac);
 177
 178 static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
 179                                   struct ieee80211_sta_ht_cap *ht_cap)
 180 {
 181         struct rtl_priv *rtlpriv = rtl_priv(hw);
 182         struct rtl_phy *rtlphy = &(rtlpriv->phy);
 183
 184         ht_cap->ht_supported = true;
 185         ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
 186             IEEE80211_HT_CAP_SGI_40 |
 187             IEEE80211_HT_CAP_SGI_20 |
 188             IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
 189
 190         if (rtlpriv->rtlhal.disable_amsdu_8k)
 191                 ht_cap->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
 192
 193         /*
 194          *Maximum length of AMPDU that the STA can receive.
 195          *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 196          */
 197         ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
 198
 199         /*Minimum MPDU start spacing , */
 200         ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
 201
 202         ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
 203
 204         /*hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 205          *base on ant_num
 206          *rx_mask: RX mask
 207          *if rx_ant = 1 rx_mask[0]= 0xff;==>MCS0-MCS7
 208          *if rx_ant = 2 rx_mask[1]= 0xff;==>MCS8-MCS15
 209          *if rx_ant >= 3 rx_mask[2]= 0xff;
 210          *if BW_40 rx_mask[4]= 0x01;
 211          *highest supported RX rate
 212          */
 213         if (rtlpriv->dm.supp_phymode_switch) {
 214
 215                 RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
 216                          "Support phy mode switch\n");
 217
 218                 ht_cap->mcs.rx_mask[0] = 0xFF;
 219                 ht_cap->mcs.rx_mask[1] = 0xFF;
 220                 ht_cap->mcs.rx_mask[4] = 0x01;
 221
 222                 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
 223         } else {
 224                 if (get_rf_type(rtlphy) == RF_1T2R ||
 225                     get_rf_type(rtlphy) == RF_2T2R) {
 226                         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
 227                                  "1T2R or 2T2R\n");
 228                         ht_cap->mcs.rx_mask[0] = 0xFF;
 229                         ht_cap->mcs.rx_mask[1] = 0xFF;
 230                         ht_cap->mcs.rx_mask[4] = 0x01;
 231
 232                         ht_cap->mcs.rx_highest =
 233                                  cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
 234                 } else if (get_rf_type(rtlphy) == RF_1T1R) {
 235                         RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "1T1R\n");
 236
 237                         ht_cap->mcs.rx_mask[0] = 0xFF;
 238                         ht_cap->mcs.rx_mask[1] = 0x00;
 239                         ht_cap->mcs.rx_mask[4] = 0x01;
 240
 241                         ht_cap->mcs.rx_highest =
 242                                  cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS7);
 243                 }
 244         }
 245 }
 246
 247 static void _rtl_init_mac80211(struct ieee80211_hw *hw)
 248 {
 249         struct rtl_priv *rtlpriv = rtl_priv(hw);
 250         struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
 251         struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
 252         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
 253         struct ieee80211_supported_band *sband;
 254
 255
 256         if (rtlhal->macphymode == SINGLEMAC_SINGLEPHY && rtlhal->bandset ==
 257             BAND_ON_BOTH) {
 258                 /* 1: 2.4 G bands */
 259                 /* <1> use  mac->bands as mem for hw->wiphy->bands */
 260                 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
 261
 262                 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 263                  * to default value(1T1R) */
 264                 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
 265                                 sizeof(struct ieee80211_supported_band));
 266
 267                 /* <3> init ht cap base on ant_num */
 268                 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 269
 270                 /* <4> set mac->sband to wiphy->sband */
 271                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
 272
 273                 /* 2: 5 G bands */
 274                 /* <1> use  mac->bands as mem for hw->wiphy->bands */
 275                 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
 276
 277                 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
 278                  * to default value(1T1R) */
 279                 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]), &rtl_band_5ghz,
 280                                 sizeof(struct ieee80211_supported_band));
 281
 282                 /* <3> init ht cap base on ant_num */
 283                 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 284
 285                 /* <4> set mac->sband to wiphy->sband */
 286                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
 287         } else {
 288                 if (rtlhal->current_bandtype == BAND_ON_2_4G) {
 289                         /* <1> use  mac->bands as mem for hw->wiphy->bands */
 290                         sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
 291
 292                         /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
 293                          * to default value(1T1R) */
 294                         memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]),
 295                                  &rtl_band_2ghz,
 296                                  sizeof(struct ieee80211_supported_band));
 297
 298                         /* <3> init ht cap base on ant_num */
 299                         _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 300
 301                         /* <4> set mac->sband to wiphy->sband */
 302                         hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
 303                 } else if (rtlhal->current_bandtype == BAND_ON_5G) {
 304                         /* <1> use  mac->bands as mem for hw->wiphy->bands */
 305                         sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
 306
 307                         /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
 308                          * to default value(1T1R) */
 309                         memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]),
 310                                  &rtl_band_5ghz,
 311                                  sizeof(struct ieee80211_supported_band));
 312
 313                         /* <3> init ht cap base on ant_num */
 314                         _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
 315
 316                         /* <4> set mac->sband to wiphy->sband */
 317                         hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
 318                 } else {
 319                         RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG, "Err BAND %d\n",
 320                                  rtlhal->current_bandtype);
 321                 }
 322         }
 323         /* <5> set hw caps */
 324         hw->flags = IEEE80211_HW_SIGNAL_DBM |
 325             IEEE80211_HW_RX_INCLUDES_FCS |
 326             IEEE80211_HW_AMPDU_AGGREGATION |
 327             IEEE80211_HW_CONNECTION_MONITOR |
 328             /* IEEE80211_HW_SUPPORTS_CQM_RSSI | */
 329             IEEE80211_HW_CONNECTION_MONITOR |
 330             IEEE80211_HW_MFP_CAPABLE |
 331             IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
 332
 333         /* swlps or hwlps has been set in diff chip in init_sw_vars */
 334         if (rtlpriv->psc.swctrl_lps)
 335                 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
 336                         IEEE80211_HW_PS_NULLFUNC_STACK |
 337                         /* IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
 338                         0;
 339
 340         hw->wiphy->interface_modes =
 341             BIT(NL80211_IFTYPE_AP) |
 342             BIT(NL80211_IFTYPE_STATION) |
 343             BIT(NL80211_IFTYPE_ADHOC) |
 344             BIT(NL80211_IFTYPE_MESH_POINT) |
 345             BIT(NL80211_IFTYPE_P2P_CLIENT) |
 346             BIT(NL80211_IFTYPE_P2P_GO);
 347
 348         hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 349         hw->wiphy->rts_threshold = 2347;
 350
 351         hw->queues = AC_MAX;
 352         hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
 353
 354         /* TODO: Correct this value for our hw */
 355         /* TODO: define these hard code value */
 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         ip = (const struct iphdr *)(skb->data + mac_hdr_len +
1078                                     SNAP_SIZE + PROTOC_TYPE_SIZE);
1079         ether_type = be16_to_cpup((__be16 *)
1080                                   (skb->data + mac_hdr_len + SNAP_SIZE));
1081
1082         switch (ether_type) {
1083         case ETH_P_IP: {
1084                 struct udphdr *udp;
1085                 u16 src;
1086                 u16 dst;
1087
1088                 if (ip->protocol != IPPROTO_UDP)
1089                         return false;
1090                 udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2));
1091                 src = be16_to_cpu(udp->source);
1092                 dst = be16_to_cpu(udp->dest);
1093
1094                 /* If this case involves port 68 (UDP BOOTP client) connecting
1095                  * with port 67 (UDP BOOTP server), then return true so that
1096                  * the lowest speed is used.
1097                  */
1098                 if (!((src == 68 && dst == 67) || (src == 67 && dst == 68)))
1099                         return false;
1100
1101                 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1102                          "dhcp %s !!\n", is_tx ? "Tx" : "Rx");
1103                 break;
1104         }
1105         case ETH_P_ARP:
1106                 break;
1107         case ETH_P_PAE:
1108                 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1109                          "802.1X %s EAPOL pkt!!\n", is_tx ? "Tx" : "Rx");
1110                 break;
1111         case ETH_P_IPV6:
1112                 /* TODO: Is this right? */
1113                 return false;
1114         default:
1115                 return false;
1116         }
1117         if (is_tx) {
1118                 rtlpriv->enter_ps = false;
1119                 schedule_work(&rtlpriv->works.lps_change_work);
1120                 ppsc->last_delaylps_stamp_jiffies = jiffies;
1121         }
1122         return true;
1123 }
1124 EXPORT_SYMBOL_GPL(rtl_is_special_data);
1125
1126 /*********************************************************
1127  *
1128  * functions called by core.c
1129  *
1130  *********************************************************/
1131 int rtl_tx_agg_start(struct ieee80211_hw *hw,
1132                 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
1133 {
1134         struct rtl_priv *rtlpriv = rtl_priv(hw);
1135         struct rtl_tid_data *tid_data;
1136         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1137         struct rtl_sta_info *sta_entry = NULL;
1138
1139         if (sta == NULL)
1140                 return -EINVAL;
1141
1142         if (unlikely(tid >= MAX_TID_COUNT))
1143                 return -EINVAL;
1144
1145         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1146         if (!sta_entry)
1147                 return -ENXIO;
1148         tid_data = &sta_entry->tids[tid];
1149
1150         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d seq:%d\n",
1151                  sta->addr, tid, tid_data->seq_number);
1152
1153         *ssn = tid_data->seq_number;
1154         tid_data->agg.agg_state = RTL_AGG_START;
1155
1156         ieee80211_start_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1157
1158         return 0;
1159 }
1160
1161 int rtl_tx_agg_stop(struct ieee80211_hw *hw,
1162                 struct ieee80211_sta *sta, u16 tid)
1163 {
1164         struct rtl_priv *rtlpriv = rtl_priv(hw);
1165         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1166         struct rtl_sta_info *sta_entry = NULL;
1167
1168         if (sta == NULL)
1169                 return -EINVAL;
1170
1171         if (!sta->addr) {
1172                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1173                 return -EINVAL;
1174         }
1175
1176         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1177                  sta->addr, tid);
1178
1179         if (unlikely(tid >= MAX_TID_COUNT))
1180                 return -EINVAL;
1181
1182         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1183         sta_entry->tids[tid].agg.agg_state = RTL_AGG_STOP;
1184
1185         ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1186
1187         return 0;
1188 }
1189
1190 int rtl_rx_agg_start(struct ieee80211_hw *hw,
1191                      struct ieee80211_sta *sta, u16 tid)
1192 {
1193         struct rtl_priv *rtlpriv = rtl_priv(hw);
1194         struct rtl_tid_data *tid_data;
1195         struct rtl_sta_info *sta_entry = NULL;
1196
1197         if (sta == NULL)
1198                 return -EINVAL;
1199
1200         if (unlikely(tid >= MAX_TID_COUNT))
1201                 return -EINVAL;
1202
1203         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1204         if (!sta_entry)
1205                 return -ENXIO;
1206         tid_data = &sta_entry->tids[tid];
1207
1208         RT_TRACE(rtlpriv, COMP_RECV, DBG_DMESG,
1209                  "on ra = %pM tid = %d seq:%d\n", sta->addr, tid,
1210                  tid_data->seq_number);
1211
1212         tid_data->agg.rx_agg_state = RTL_RX_AGG_START;
1213         return 0;
1214 }
1215
1216 int rtl_rx_agg_stop(struct ieee80211_hw *hw,
1217                     struct ieee80211_sta *sta, u16 tid)
1218 {
1219         struct rtl_priv *rtlpriv = rtl_priv(hw);
1220         struct rtl_sta_info *sta_entry = NULL;
1221
1222         if (sta == NULL)
1223                 return -EINVAL;
1224
1225         if (!sta->addr) {
1226                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1227                 return -EINVAL;
1228         }
1229
1230         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1231                  "on ra = %pM tid = %d\n", sta->addr, tid);
1232
1233         if (unlikely(tid >= MAX_TID_COUNT))
1234                 return -EINVAL;
1235
1236         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1237         sta_entry->tids[tid].agg.rx_agg_state = RTL_RX_AGG_STOP;
1238
1239         return 0;
1240 }
1241
1242 int rtl_tx_agg_oper(struct ieee80211_hw *hw,
1243                 struct ieee80211_sta *sta, u16 tid)
1244 {
1245         struct rtl_priv *rtlpriv = rtl_priv(hw);
1246         struct rtl_sta_info *sta_entry = NULL;
1247
1248         if (sta == NULL)
1249                 return -EINVAL;
1250
1251         if (!sta->addr) {
1252                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1253                 return -EINVAL;
1254         }
1255
1256         RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1257                  sta->addr, tid);
1258
1259         if (unlikely(tid >= MAX_TID_COUNT))
1260                 return -EINVAL;
1261
1262         sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1263         sta_entry->tids[tid].agg.agg_state = RTL_AGG_OPERATIONAL;
1264
1265         return 0;
1266 }
1267
1268 /*********************************************************
1269  *
1270  * wq & timer callback functions
1271  *
1272  *********************************************************/
1273 /* this function is used for roaming */
1274 void rtl_beacon_statistic(struct ieee80211_hw *hw, struct sk_buff *skb)
1275 {
1276         struct rtl_priv *rtlpriv = rtl_priv(hw);
1277         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1278
1279         if (rtlpriv->mac80211.opmode != NL80211_IFTYPE_STATION)
1280                 return;
1281
1282         if (rtlpriv->mac80211.link_state < MAC80211_LINKED)
1283                 return;
1284
1285         /* check if this really is a beacon */
1286         if (!ieee80211_is_beacon(hdr->frame_control) &&
1287             !ieee80211_is_probe_resp(hdr->frame_control))
1288                 return;
1289
1290         /* min. beacon length + FCS_LEN */
1291         if (skb->len <= 40 + FCS_LEN)
1292                 return;
1293
1294         /* and only beacons from the associated BSSID, please */
1295         if (!ether_addr_equal_64bits(hdr->addr3, rtlpriv->mac80211.bssid))
1296                 return;
1297
1298         rtlpriv->link_info.bcn_rx_inperiod++;
1299 }
1300 EXPORT_SYMBOL_GPL(rtl_beacon_statistic);
1301
1302 void rtl_watchdog_wq_callback(void *data)
1303 {
1304         struct rtl_works *rtlworks = container_of_dwork_rtl(data,
1305                                                             struct rtl_works,
1306                                                             watchdog_wq);
1307         struct ieee80211_hw *hw = rtlworks->hw;
1308         struct rtl_priv *rtlpriv = rtl_priv(hw);
1309         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1310         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1311         bool busytraffic = false;
1312         bool tx_busy_traffic = false;
1313         bool rx_busy_traffic = false;
1314         bool higher_busytraffic = false;
1315         bool higher_busyrxtraffic = false;
1316         u8 idx, tid;
1317         u32 rx_cnt_inp4eriod = 0;
1318         u32 tx_cnt_inp4eriod = 0;
1319         u32 aver_rx_cnt_inperiod = 0;
1320         u32 aver_tx_cnt_inperiod = 0;
1321         u32 aver_tidtx_inperiod[MAX_TID_COUNT] = {0};
1322         u32 tidtx_inp4eriod[MAX_TID_COUNT] = {0};
1323
1324         if (is_hal_stop(rtlhal))
1325                 return;
1326
1327         /* <1> Determine if action frame is allowed */
1328         if (mac->link_state > MAC80211_NOLINK) {
1329                 if (mac->cnt_after_linked < 20)
1330                         mac->cnt_after_linked++;
1331         } else {
1332                 mac->cnt_after_linked = 0;
1333         }
1334
1335         /*
1336          *<2> to check if traffic busy, if
1337          * busytraffic we don't change channel
1338          */
1339         if (mac->link_state >= MAC80211_LINKED) {
1340
1341                 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
1342                 for (idx = 0; idx <= 2; idx++) {
1343                         rtlpriv->link_info.num_rx_in4period[idx] =
1344                             rtlpriv->link_info.num_rx_in4period[idx + 1];
1345                         rtlpriv->link_info.num_tx_in4period[idx] =
1346                             rtlpriv->link_info.num_tx_in4period[idx + 1];
1347                 }
1348                 rtlpriv->link_info.num_rx_in4period[3] =
1349                     rtlpriv->link_info.num_rx_inperiod;
1350                 rtlpriv->link_info.num_tx_in4period[3] =
1351                     rtlpriv->link_info.num_tx_inperiod;
1352                 for (idx = 0; idx <= 3; idx++) {
1353                         rx_cnt_inp4eriod +=
1354                             rtlpriv->link_info.num_rx_in4period[idx];
1355                         tx_cnt_inp4eriod +=
1356                             rtlpriv->link_info.num_tx_in4period[idx];
1357                 }
1358                 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
1359                 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
1360
1361                 /* (2) check traffic busy */
1362                 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100) {
1363                         busytraffic = true;
1364                         if (aver_rx_cnt_inperiod > aver_tx_cnt_inperiod)
1365                                 rx_busy_traffic = true;
1366                         else
1367                                 tx_busy_traffic = false;
1368                 }
1369
1370                 /* Higher Tx/Rx data. */
1371                 if (aver_rx_cnt_inperiod > 4000 ||
1372                     aver_tx_cnt_inperiod > 4000) {
1373                         higher_busytraffic = true;
1374
1375                         /* Extremely high Rx data. */
1376                         if (aver_rx_cnt_inperiod > 5000)
1377                                 higher_busyrxtraffic = true;
1378                 }
1379
1380                 /* check every tid's tx traffic */
1381                 for (tid = 0; tid <= 7; tid++) {
1382                         for (idx = 0; idx <= 2; idx++)
1383                                 rtlpriv->link_info.tidtx_in4period[tid][idx] =
1384                                   rtlpriv->link_info.tidtx_in4period[tid]
1385                                   [idx + 1];
1386                         rtlpriv->link_info.tidtx_in4period[tid][3] =
1387                                 rtlpriv->link_info.tidtx_inperiod[tid];
1388
1389                         for (idx = 0; idx <= 3; idx++)
1390                                 tidtx_inp4eriod[tid] +=
1391                                   rtlpriv->link_info.tidtx_in4period[tid][idx];
1392                         aver_tidtx_inperiod[tid] = tidtx_inp4eriod[tid] / 4;
1393                         if (aver_tidtx_inperiod[tid] > 5000)
1394                                 rtlpriv->link_info.higher_busytxtraffic[tid] =
1395                                                    true;
1396                         else
1397                                 rtlpriv->link_info.higher_busytxtraffic[tid] =
1398                                                    false;
1399                 }
1400
1401                 if (((rtlpriv->link_info.num_rx_inperiod +
1402                       rtlpriv->link_info.num_tx_inperiod) > 8) ||
1403                     (rtlpriv->link_info.num_rx_inperiod > 2))
1404                         rtlpriv->enter_ps = true;
1405                 else
1406                         rtlpriv->enter_ps = false;
1407
1408                 /* LeisurePS only work in infra mode. */
1409                 schedule_work(&rtlpriv->works.lps_change_work);
1410         }
1411
1412         rtlpriv->link_info.num_rx_inperiod = 0;
1413         rtlpriv->link_info.num_tx_inperiod = 0;
1414         for (tid = 0; tid <= 7; tid++)
1415                 rtlpriv->link_info.tidtx_inperiod[tid] = 0;
1416
1417         rtlpriv->link_info.busytraffic = busytraffic;
1418         rtlpriv->link_info.higher_busytraffic = higher_busytraffic;
1419         rtlpriv->link_info.rx_busy_traffic = rx_busy_traffic;
1420         rtlpriv->link_info.tx_busy_traffic = tx_busy_traffic;
1421         rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic;
1422
1423         /* <3> DM */
1424         rtlpriv->cfg->ops->dm_watchdog(hw);
1425
1426         /* <4> roaming */
1427         if (mac->link_state == MAC80211_LINKED &&
1428             mac->opmode == NL80211_IFTYPE_STATION) {
1429                 if ((rtlpriv->link_info.bcn_rx_inperiod +
1430                      rtlpriv->link_info.num_rx_inperiod) == 0) {
1431                         rtlpriv->link_info.roam_times++;
1432                         RT_TRACE(rtlpriv, COMP_ERR, DBG_DMESG,
1433                                  "AP off for %d s\n",
1434                                  (rtlpriv->link_info.roam_times * 2));
1435
1436                         /* if we can't recv beacon for 6s, we should
1437                          * reconnect this AP
1438                          */
1439                         if ((rtlpriv->link_info.roam_times >= 3) &&
1440                             !is_zero_ether_addr(rtlpriv->mac80211.bssid)) {
1441                                 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1442                                          "AP off, try to reconnect now\n");
1443                                 rtlpriv->link_info.roam_times = 0;
1444                                 ieee80211_connection_loss(rtlpriv->mac80211.vif);
1445                         }
1446                 } else {
1447                         rtlpriv->link_info.roam_times = 0;
1448                 }
1449         }
1450         rtlpriv->link_info.bcn_rx_inperiod = 0;
1451 }
1452
1453 void rtl_watch_dog_timer_callback(unsigned long data)
1454 {
1455         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1456         struct rtl_priv *rtlpriv = rtl_priv(hw);
1457
1458         queue_delayed_work(rtlpriv->works.rtl_wq,
1459                            &rtlpriv->works.watchdog_wq, 0);
1460
1461         mod_timer(&rtlpriv->works.watchdog_timer,
1462                   jiffies + MSECS(RTL_WATCH_DOG_TIME));
1463 }
1464
1465 void rtl_fwevt_wq_callback(void *data)
1466 {
1467         struct rtl_works *rtlworks =
1468                 container_of_dwork_rtl(data, struct rtl_works, fwevt_wq);
1469         struct ieee80211_hw *hw = rtlworks->hw;
1470         struct rtl_priv *rtlpriv = rtl_priv(hw);
1471
1472         rtlpriv->cfg->ops->c2h_command_handle(hw);
1473 }
1474
1475 void rtl_easy_concurrent_retrytimer_callback(unsigned long data)
1476 {
1477         struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1478         struct rtl_priv *rtlpriv = rtl_priv(hw);
1479         struct rtl_priv *buddy_priv = rtlpriv->buddy_priv;
1480
1481         if (buddy_priv == NULL)
1482                 return;
1483
1484         rtlpriv->cfg->ops->dualmac_easy_concurrent(hw);
1485 }
1486
1487 /*********************************************************
1488  *
1489  * frame process functions
1490  *
1491  *********************************************************/
1492 u8 *rtl_find_ie(u8 *data, unsigned int len, u8 ie)
1493 {
1494         struct ieee80211_mgmt *mgmt = (void *)data;
1495         u8 *pos, *end;
1496
1497         pos = (u8 *)mgmt->u.beacon.variable;
1498         end = data + len;
1499         while (pos < end) {
1500                 if (pos + 2 + pos[1] > end)
1501                         return NULL;
1502
1503                 if (pos[0] == ie)
1504                         return pos;
1505
1506                 pos += 2 + pos[1];
1507         }
1508         return NULL;
1509 }
1510
1511 /* when we use 2 rx ants we send IEEE80211_SMPS_OFF */
1512 /* when we use 1 rx ant we send IEEE80211_SMPS_STATIC */
1513 static struct sk_buff *rtl_make_smps_action(struct ieee80211_hw *hw,
1514                 enum ieee80211_smps_mode smps, u8 *da, u8 *bssid)
1515 {
1516         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1517         struct sk_buff *skb;
1518         struct ieee80211_mgmt *action_frame;
1519
1520         /* 27 = header + category + action + smps mode */
1521         skb = dev_alloc_skb(27 + hw->extra_tx_headroom);
1522         if (!skb)
1523                 return NULL;
1524
1525         skb_reserve(skb, hw->extra_tx_headroom);
1526         action_frame = (void *)skb_put(skb, 27);
1527         memset(action_frame, 0, 27);
1528         memcpy(action_frame->da, da, ETH_ALEN);
1529         memcpy(action_frame->sa, rtlefuse->dev_addr, ETH_ALEN);
1530         memcpy(action_frame->bssid, bssid, ETH_ALEN);
1531         action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1532                                                   IEEE80211_STYPE_ACTION);
1533         action_frame->u.action.category = WLAN_CATEGORY_HT;
1534         action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS;
1535         switch (smps) {
1536         case IEEE80211_SMPS_AUTOMATIC:/* 0 */
1537         case IEEE80211_SMPS_NUM_MODES:/* 4 */
1538                 WARN_ON(1);
1539         case IEEE80211_SMPS_OFF:/* 1 */ /*MIMO_PS_NOLIMIT*/
1540                 action_frame->u.action.u.ht_smps.smps_control =
1541                                 WLAN_HT_SMPS_CONTROL_DISABLED;/* 0 */
1542                 break;
1543         case IEEE80211_SMPS_STATIC:/* 2 */ /*MIMO_PS_STATIC*/
1544                 action_frame->u.action.u.ht_smps.smps_control =
1545                                 WLAN_HT_SMPS_CONTROL_STATIC;/* 1 */
1546                 break;
1547         case IEEE80211_SMPS_DYNAMIC:/* 3 */ /*MIMO_PS_DYNAMIC*/
1548                 action_frame->u.action.u.ht_smps.smps_control =
1549                                 WLAN_HT_SMPS_CONTROL_DYNAMIC;/* 3 */
1550                 break;
1551         }
1552
1553         return skb;
1554 }
1555
1556 int rtl_send_smps_action(struct ieee80211_hw *hw,
1557                 struct ieee80211_sta *sta,
1558                 enum ieee80211_smps_mode smps)
1559 {
1560         struct rtl_priv *rtlpriv = rtl_priv(hw);
1561         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1562         struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1563         struct sk_buff *skb = NULL;
1564         struct rtl_tcb_desc tcb_desc;
1565         u8 bssid[ETH_ALEN] = {0};
1566
1567         memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1568
1569         if (rtlpriv->mac80211.act_scanning)
1570                 goto err_free;
1571
1572         if (!sta)
1573                 goto err_free;
1574
1575         if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
1576                 goto err_free;
1577
1578         if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
1579                 goto err_free;
1580
1581         if (rtlpriv->mac80211.opmode == NL80211_IFTYPE_AP)
1582                 memcpy(bssid, rtlpriv->efuse.dev_addr, ETH_ALEN);
1583         else
1584                 memcpy(bssid, rtlpriv->mac80211.bssid, ETH_ALEN);
1585
1586         skb = rtl_make_smps_action(hw, smps, sta->addr, bssid);
1587         /* this is a type = mgmt * stype = action frame */
1588         if (skb) {
1589                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1590                 struct rtl_sta_info *sta_entry =
1591                         (struct rtl_sta_info *) sta->drv_priv;
1592                 sta_entry->mimo_ps = smps;
1593
1594                 info->control.rates[0].idx = 0;
1595                 info->band = hw->conf.chandef.chan->band;
1596                 rtlpriv->intf_ops->adapter_tx(hw, sta, skb, &tcb_desc);
1597         }
1598         return 1;
1599
1600 err_free:
1601         return 0;
1602 }
1603 EXPORT_SYMBOL(rtl_send_smps_action);
1604
1605 void rtl_phy_scan_operation_backup(struct ieee80211_hw *hw, u8 operation)
1606 {
1607         struct rtl_priv *rtlpriv = rtl_priv(hw);
1608         struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1609         enum io_type iotype;
1610
1611         if (!is_hal_stop(rtlhal)) {
1612                 switch (operation) {
1613                 case SCAN_OPT_BACKUP:
1614                         iotype = IO_CMD_PAUSE_DM_BY_SCAN;
1615                         rtlpriv->cfg->ops->set_hw_reg(hw,
1616                                                       HW_VAR_IO_CMD,
1617                                                       (u8 *)&iotype);
1618                         break;
1619                 case SCAN_OPT_RESTORE:
1620                         iotype = IO_CMD_RESUME_DM_BY_SCAN;
1621                         rtlpriv->cfg->ops->set_hw_reg(hw,
1622                                                       HW_VAR_IO_CMD,
1623                                                       (u8 *)&iotype);
1624                         break;
1625                 default:
1626                         RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1627                                  "Unknown Scan Backup operation.\n");
1628                         break;
1629                 }
1630         }
1631 }
1632 EXPORT_SYMBOL(rtl_phy_scan_operation_backup);
1633
1634 /* There seem to be issues in mac80211 regarding when del ba frames can be
1635  * received. As a work around, we make a fake del_ba if we receive a ba_req;
1636  * however, rx_agg was opened to let mac80211 release some ba related
1637  * resources. This del_ba is for tx only.
1638  */
1639 struct sk_buff *rtl_make_del_ba(struct ieee80211_hw *hw,
1640                                 u8 *sa, u8 *bssid, u16 tid)
1641 {
1642         struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1643         struct sk_buff *skb;
1644         struct ieee80211_mgmt *action_frame;
1645         u16 params;
1646
1647         /* 27 = header + category + action + smps mode */
1648         skb = dev_alloc_skb(34 + hw->extra_tx_headroom);
1649         if (!skb)
1650                 return NULL;
1651
1652         skb_reserve(skb, hw->extra_tx_headroom);
1653         action_frame = (void *)skb_put(skb, 34);
1654         memset(action_frame, 0, 34);
1655         memcpy(action_frame->sa, sa, ETH_ALEN);
1656         memcpy(action_frame->da, rtlefuse->dev_addr, ETH_ALEN);
1657         memcpy(action_frame->bssid, bssid, ETH_ALEN);
1658         action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1659                                                   IEEE80211_STYPE_ACTION);
1660         action_frame->u.action.category = WLAN_CATEGORY_BACK;
1661         action_frame->u.action.u.delba.action_code = WLAN_ACTION_DELBA;
1662         params = (u16)(1 << 11);        /* bit 11 initiator */
1663         params |= (u16)(tid << 12);             /* bit 15:12 TID number */
1664
1665         action_frame->u.action.u.delba.params = cpu_to_le16(params);
1666         action_frame->u.action.u.delba.reason_code =
1667                 cpu_to_le16(WLAN_REASON_QSTA_TIMEOUT);
1668
1669         return skb;
1670 }
1671
1672 /*********************************************************
1673  *
1674  * IOT functions
1675  *
1676  *********************************************************/
1677 static bool rtl_chk_vendor_ouisub(struct ieee80211_hw *hw,
1678                 struct octet_string vendor_ie)
1679 {
1680         struct rtl_priv *rtlpriv = rtl_priv(hw);
1681         bool matched = false;
1682         static u8 athcap_1[] = { 0x00, 0x03, 0x7F };
1683         static u8 athcap_2[] = { 0x00, 0x13, 0x74 };
1684         static u8 broadcap_1[] = { 0x00, 0x10, 0x18 };
1685         static u8 broadcap_2[] = { 0x00, 0x0a, 0xf7 };
1686         static u8 broadcap_3[] = { 0x00, 0x05, 0xb5 };
1687         static u8 racap[] = { 0x00, 0x0c, 0x43 };
1688         static u8 ciscocap[] = { 0x00, 0x40, 0x96 };
1689         static u8 marvcap[] = { 0x00, 0x50, 0x43 };
1690
1691         if (memcmp(vendor_ie.octet, athcap_1, 3) == 0 ||
1692                 memcmp(vendor_ie.octet, athcap_2, 3) == 0) {
1693                 rtlpriv->mac80211.vendor = PEER_ATH;
1694                 matched = true;
1695         } else if (memcmp(vendor_ie.octet, broadcap_1, 3) == 0 ||
1696                 memcmp(vendor_ie.octet, broadcap_2, 3) == 0 ||
1697                 memcmp(vendor_ie.octet, broadcap_3, 3) == 0) {
1698                 rtlpriv->mac80211.vendor = PEER_BROAD;
1699                 matched = true;
1700         } else if (memcmp(vendor_ie.octet, racap, 3) == 0) {
1701                 rtlpriv->mac80211.vendor = PEER_RAL;
1702                 matched = true;
1703         } else if (memcmp(vendor_ie.octet, ciscocap, 3) == 0) {
1704                 rtlpriv->mac80211.vendor = PEER_CISCO;
1705                 matched = true;
1706         } else if (memcmp(vendor_ie.octet, marvcap, 3) == 0) {
1707                 rtlpriv->mac80211.vendor = PEER_MARV;
1708                 matched = true;
1709         }
1710
1711         return matched;
1712 }
1713
1714 static bool rtl_find_221_ie(struct ieee80211_hw *hw, u8 *data,
1715                 unsigned int len)
1716 {
1717         struct ieee80211_mgmt *mgmt = (void *)data;
1718         struct octet_string vendor_ie;
1719         u8 *pos, *end;
1720
1721         pos = (u8 *)mgmt->u.beacon.variable;
1722         end = data + len;
1723         while (pos < end) {
1724                 if (pos[0] == 221) {
1725                         vendor_ie.length = pos[1];
1726                         vendor_ie.octet = &pos[2];
1727                         if (rtl_chk_vendor_ouisub(hw, vendor_ie))
1728                                 return true;
1729                 }
1730
1731                 if (pos + 2 + pos[1] > end)
1732                         return false;
1733
1734                 pos += 2 + pos[1];
1735         }
1736         return false;
1737 }
1738
1739 void rtl_recognize_peer(struct ieee80211_hw *hw, u8 *data, unsigned int len)
1740 {
1741         struct rtl_priv *rtlpriv = rtl_priv(hw);
1742         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1743         struct ieee80211_hdr *hdr = (void *)data;
1744         u32 vendor = PEER_UNKNOWN;
1745
1746         static u8 ap3_1[3] = { 0x00, 0x14, 0xbf };
1747         static u8 ap3_2[3] = { 0x00, 0x1a, 0x70 };
1748         static u8 ap3_3[3] = { 0x00, 0x1d, 0x7e };
1749         static u8 ap4_1[3] = { 0x00, 0x90, 0xcc };
1750         static u8 ap4_2[3] = { 0x00, 0x0e, 0x2e };
1751         static u8 ap4_3[3] = { 0x00, 0x18, 0x02 };
1752         static u8 ap4_4[3] = { 0x00, 0x17, 0x3f };
1753         static u8 ap4_5[3] = { 0x00, 0x1c, 0xdf };
1754         static u8 ap5_1[3] = { 0x00, 0x1c, 0xf0 };
1755         static u8 ap5_2[3] = { 0x00, 0x21, 0x91 };
1756         static u8 ap5_3[3] = { 0x00, 0x24, 0x01 };
1757         static u8 ap5_4[3] = { 0x00, 0x15, 0xe9 };
1758         static u8 ap5_5[3] = { 0x00, 0x17, 0x9A };
1759         static u8 ap5_6[3] = { 0x00, 0x18, 0xE7 };
1760         static u8 ap6_1[3] = { 0x00, 0x17, 0x94 };
1761         static u8 ap7_1[3] = { 0x00, 0x14, 0xa4 };
1762
1763         if (mac->opmode != NL80211_IFTYPE_STATION)
1764                 return;
1765
1766         if (mac->link_state == MAC80211_NOLINK) {
1767                 mac->vendor = PEER_UNKNOWN;
1768                 return;
1769         }
1770
1771         if (mac->cnt_after_linked > 2)
1772                 return;
1773
1774         /* check if this really is a beacon */
1775         if (!ieee80211_is_beacon(hdr->frame_control))
1776                 return;
1777
1778         /* min. beacon length + FCS_LEN */
1779         if (len <= 40 + FCS_LEN)
1780                 return;
1781
1782         /* and only beacons from the associated BSSID, please */
1783         if (!ether_addr_equal_64bits(hdr->addr3, rtlpriv->mac80211.bssid))
1784                 return;
1785
1786         if (rtl_find_221_ie(hw, data, len))
1787                 vendor = mac->vendor;
1788
1789         if ((memcmp(mac->bssid, ap5_1, 3) == 0) ||
1790                 (memcmp(mac->bssid, ap5_2, 3) == 0) ||
1791                 (memcmp(mac->bssid, ap5_3, 3) == 0) ||
1792                 (memcmp(mac->bssid, ap5_4, 3) == 0) ||
1793                 (memcmp(mac->bssid, ap5_5, 3) == 0) ||
1794                 (memcmp(mac->bssid, ap5_6, 3) == 0) ||
1795                 vendor == PEER_ATH) {
1796                 vendor = PEER_ATH;
1797                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ath find\n");
1798         } else if ((memcmp(mac->bssid, ap4_4, 3) == 0) ||
1799                 (memcmp(mac->bssid, ap4_5, 3) == 0) ||
1800                 (memcmp(mac->bssid, ap4_1, 3) == 0) ||
1801                 (memcmp(mac->bssid, ap4_2, 3) == 0) ||
1802                 (memcmp(mac->bssid, ap4_3, 3) == 0) ||
1803                 vendor == PEER_RAL) {
1804                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ral find\n");
1805                 vendor = PEER_RAL;
1806         } else if (memcmp(mac->bssid, ap6_1, 3) == 0 ||
1807                 vendor == PEER_CISCO) {
1808                 vendor = PEER_CISCO;
1809                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>cisco find\n");
1810         } else if ((memcmp(mac->bssid, ap3_1, 3) == 0) ||
1811                 (memcmp(mac->bssid, ap3_2, 3) == 0) ||
1812                 (memcmp(mac->bssid, ap3_3, 3) == 0) ||
1813                 vendor == PEER_BROAD) {
1814                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>broad find\n");
1815                 vendor = PEER_BROAD;
1816         } else if (memcmp(mac->bssid, ap7_1, 3) == 0 ||
1817                 vendor == PEER_MARV) {
1818                 vendor = PEER_MARV;
1819                 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>marv find\n");
1820         }
1821
1822         mac->vendor = vendor;
1823 }
1824 EXPORT_SYMBOL_GPL(rtl_recognize_peer);
1825
1826 /*********************************************************
1827  *
1828  * sysfs functions
1829  *
1830  *********************************************************/
1831 static ssize_t rtl_show_debug_level(struct device *d,
1832                                     struct device_attribute *attr, char *buf)
1833 {
1834         struct ieee80211_hw *hw = dev_get_drvdata(d);
1835         struct rtl_priv *rtlpriv = rtl_priv(hw);
1836
1837         return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
1838 }
1839
1840 static ssize_t rtl_store_debug_level(struct device *d,
1841                                      struct device_attribute *attr,
1842                                      const char *buf, size_t count)
1843 {
1844         struct ieee80211_hw *hw = dev_get_drvdata(d);
1845         struct rtl_priv *rtlpriv = rtl_priv(hw);
1846         unsigned long val;
1847         int ret;
1848
1849         ret = kstrtoul(buf, 0, &val);
1850         if (ret) {
1851                 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
1852         } else {
1853                 rtlpriv->dbg.global_debuglevel = val;
1854                 printk(KERN_DEBUG "debuglevel:%x\n",
1855                        rtlpriv->dbg.global_debuglevel);
1856         }
1857
1858         return strnlen(buf, count);
1859 }
1860
1861 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1862                    rtl_show_debug_level, rtl_store_debug_level);
1863
1864 static struct attribute *rtl_sysfs_entries[] = {
1865
1866         &dev_attr_debug_level.attr,
1867
1868         NULL
1869 };
1870
1871 /*
1872  * "name" is folder name witch will be
1873  * put in device directory like :
1874  * sys/devices/pci0000:00/0000:00:1c.4/
1875  * 0000:06:00.0/rtl_sysfs
1876  */
1877 struct attribute_group rtl_attribute_group = {
1878         .name = "rtlsysfs",
1879         .attrs = rtl_sysfs_entries,
1880 };
1881 EXPORT_SYMBOL_GPL(rtl_attribute_group);
1882
1883 MODULE_AUTHOR("lizhaoming       <chaoming_li@realsil.com.cn>");
1884 MODULE_AUTHOR("Realtek WlanFAE  <wlanfae@realtek.com>");
1885 MODULE_AUTHOR("Larry Finger     <Larry.FInger@lwfinger.net>");
1886 MODULE_LICENSE("GPL");
1887 MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
1888
1889 struct rtl_global_var rtl_global_var = {};
1890 EXPORT_SYMBOL_GPL(rtl_global_var);
1891
1892 static int __init rtl_core_module_init(void)
1893 {
1894         if (rtl_rate_control_register())
1895                 pr_err("Unable to register rtl_rc, use default RC !!\n");
1896
1897         /* init some global vars */
1898         INIT_LIST_HEAD(&rtl_global_var.glb_priv_list);
1899         spin_lock_init(&rtl_global_var.glb_list_lock);
1900
1901         return 0;
1902 }
1903
1904 static void __exit rtl_core_module_exit(void)
1905 {
1906         /*RC*/
1907         rtl_rate_control_unregister();
1908 }
1909
1910 module_init(rtl_core_module_init);
1911 module_exit(rtl_core_module_exit);