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