package/mac80211/patches/301-rt2x00-Implement-support-for-802.11n.patch

   1 From 827327792c4b0d4d4909ec27bd56cb3ba8f2b754 Mon Sep 17 00:00:00 2001
   2 From: Ivo van Doorn <IvDoorn@gmail.com>
   3 Date: Sat, 14 Mar 2009 20:06:48 +0100
   4 Subject: [PATCH] rt2x00: Implement support for 802.11n
   5
   6 Extend rt2x00lib capabilities to support 802.11n,
   7 it still lacks aggregation support, but that can
   8 be added in the future.
   9
  10 Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
  11 ---
  12  drivers/net/wireless/rt2x00/Kconfig        |    3 +
  13  drivers/net/wireless/rt2x00/Makefile       |    1 +
  14  drivers/net/wireless/rt2x00/rt2x00.h       |    4 +
  15  drivers/net/wireless/rt2x00/rt2x00config.c |    5 ++
  16  drivers/net/wireless/rt2x00/rt2x00dev.c    |   91 ++++++++++++++++++++-------
  17  drivers/net/wireless/rt2x00/rt2x00ht.c     |   69 +++++++++++++++++++++
  18  drivers/net/wireless/rt2x00/rt2x00lib.h    |   24 +++++++
  19  drivers/net/wireless/rt2x00/rt2x00queue.c  |    1 +
  20  drivers/net/wireless/rt2x00/rt2x00queue.h  |   33 ++++++++--
  21  9 files changed, 201 insertions(+), 30 deletions(-)
  22  create mode 100644 drivers/net/wireless/rt2x00/rt2x00ht.c
  23
  24 --- a/drivers/net/wireless/rt2x00/Makefile
  25 +++ b/drivers/net/wireless/rt2x00/Makefile
  26 @@ -8,6 +8,7 @@ rt2x00lib-$(CONFIG_RT2X00_LIB_CRYPTO)   +=
  27  rt2x00lib-$(CONFIG_RT2X00_LIB_RFKILL)  += rt2x00rfkill.o
  28  rt2x00lib-$(CONFIG_RT2X00_LIB_FIRMWARE)        += rt2x00firmware.o
  29  rt2x00lib-$(CONFIG_RT2X00_LIB_LEDS)    += rt2x00leds.o
  30 +rt2x00lib-$(CONFIG_RT2X00_LIB_HT)      += rt2x00ht.o
  31
  32  obj-$(CONFIG_RT2X00_LIB)               += rt2x00lib.o
  33  obj-$(CONFIG_RT2X00_LIB_PCI)           += rt2x00pci.o
  34 --- a/drivers/net/wireless/rt2x00/rt2x00.h
  35 +++ b/drivers/net/wireless/rt2x00/rt2x00.h
  36 @@ -357,6 +357,7 @@ static inline struct rt2x00_intf* vif_to
  37   *     for @tx_power_a, @tx_power_bg and @channels.
  38   * @channels: Device/chipset specific channel values (See &struct rf_channel).
  39   * @channels_info: Additional information for channels (See &struct channel_info).
  40 + * @ht: Driver HT Capabilities (See &ieee80211_sta_ht_cap).
  41   */
  42  struct hw_mode_spec {
  43         unsigned int supported_bands;
  44 @@ -370,6 +371,8 @@ struct hw_mode_spec {
  45         unsigned int num_channels;
  46         const struct rf_channel *channels;
  47         const struct channel_info *channels_info;
  48 +
  49 +       struct ieee80211_sta_ht_cap ht;
  50  };
  51
  52  /*
  53 @@ -606,6 +609,7 @@ enum rt2x00_flags {
  54         CONFIG_EXTERNAL_LNA_BG,
  55         CONFIG_DOUBLE_ANTENNA,
  56         CONFIG_DISABLE_LINK_TUNING,
  57 +       CONFIG_CHANNEL_HT40,
  58  };
  59
  60  /*
  61 --- a/drivers/net/wireless/rt2x00/rt2x00config.c
  62 +++ b/drivers/net/wireless/rt2x00/rt2x00config.c
  63 @@ -173,6 +173,11 @@ void rt2x00lib_config(struct rt2x00_dev
  64         libconf.conf = conf;
  65
  66         if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL) {
  67 +               if (conf_is_ht40(conf))
  68 +                       __set_bit(CONFIG_CHANNEL_HT40, &rt2x00dev->flags);
  69 +               else
  70 +                       __clear_bit(CONFIG_CHANNEL_HT40, &rt2x00dev->flags);
  71 +
  72                 memcpy(&libconf.rf,
  73                        &rt2x00dev->spec.channels[conf->channel->hw_value],
  74                        sizeof(libconf.rf));
  75 --- a/drivers/net/wireless/rt2x00/rt2x00dev.c
  76 +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
  77 @@ -316,18 +316,54 @@ void rt2x00lib_txdone(struct queue_entry
  78  }
  79  EXPORT_SYMBOL_GPL(rt2x00lib_txdone);
  80
  81 +static int rt2x00lib_rxdone_read_signal(struct rt2x00_dev *rt2x00dev,
  82 +                                       struct rxdone_entry_desc *rxdesc)
  83 +{
  84 +       struct ieee80211_supported_band *sband;
  85 +       const struct rt2x00_rate *rate;
  86 +       unsigned int i;
  87 +       int signal;
  88 +       int type;
  89 +
  90 +       /*
  91 +        * For non-HT rates the MCS value needs to contain the
  92 +        * actually used rate modulation (CCK or OFDM).
  93 +        */
  94 +       if (rxdesc->dev_flags & RXDONE_SIGNAL_MCS)
  95 +               signal = RATE_MCS(rxdesc->rate_mode, rxdesc->signal);
  96 +       else
  97 +               signal = rxdesc->signal;
  98 +
  99 +       type = (rxdesc->dev_flags & RXDONE_SIGNAL_MASK);
 100 +
 101 +       sband = &rt2x00dev->bands[rt2x00dev->curr_band];
 102 +       for (i = 0; i < sband->n_bitrates; i++) {
 103 +               rate = rt2x00_get_rate(sband->bitrates[i].hw_value);
 104 +
 105 +               if (((type == RXDONE_SIGNAL_PLCP) &&
 106 +                    (rate->plcp == signal)) ||
 107 +                   ((type == RXDONE_SIGNAL_BITRATE) &&
 108 +                     (rate->bitrate == signal)) ||
 109 +                   ((type == RXDONE_SIGNAL_MCS) &&
 110 +                     (rate->mcs == signal))) {
 111 +                       return i;
 112 +               }
 113 +       }
 114 +
 115 +       WARNING(rt2x00dev, "Frame received with unrecognized signal, "
 116 +               "signal=0x%.4x, type=%d.\n", signal, type);
 117 +       return 0;
 118 +}
 119 +
 120  void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
 121                       struct queue_entry *entry)
 122  {
 123         struct rxdone_entry_desc rxdesc;
 124         struct sk_buff *skb;
 125         struct ieee80211_rx_status *rx_status = &rt2x00dev->rx_status;
 126 -       struct ieee80211_supported_band *sband;
 127 -       const struct rt2x00_rate *rate;
 128         unsigned int header_length;
 129         unsigned int align;
 130 -       unsigned int i;
 131 -       int idx = -1;
 132 +       int rate_idx;
 133
 134         /*
 135          * Allocate a new sk_buffer. If no new buffer available, drop the
 136 @@ -376,26 +412,17 @@ void rt2x00lib_rxdone(struct rt2x00_dev
 137         skb_trim(entry->skb, rxdesc.size);
 138
 139         /*
 140 -        * Update RX statistics.
 141 -        */
 142 -       sband = &rt2x00dev->bands[rt2x00dev->curr_band];
 143 -       for (i = 0; i < sband->n_bitrates; i++) {
 144 -               rate = rt2x00_get_rate(sband->bitrates[i].hw_value);
 145 -
 146 -               if (((rxdesc.dev_flags & RXDONE_SIGNAL_PLCP) &&
 147 -                    (rate->plcp == rxdesc.signal)) ||
 148 -                   ((rxdesc.dev_flags & RXDONE_SIGNAL_BITRATE) &&
 149 -                     (rate->bitrate == rxdesc.signal))) {
 150 -                       idx = i;
 151 -                       break;
 152 -               }
 153 -       }
 154 -
 155 -       if (idx < 0) {
 156 -               WARNING(rt2x00dev, "Frame received with unrecognized signal,"
 157 -                       "signal=0x%.2x, type=%d.\n", rxdesc.signal,
 158 -                       (rxdesc.dev_flags & RXDONE_SIGNAL_MASK));
 159 -               idx = 0;
 160 +        * Check if the frame was received using HT. In that case,
 161 +        * the rate is the MCS index and should be passed to mac80211
 162 +        * directly. Otherwise we need to translate the signal to
 163 +        * the correct bitrate index.
 164 +        */
 165 +       if (rxdesc.rate_mode == RATE_MODE_CCK ||
 166 +           rxdesc.rate_mode == RATE_MODE_OFDM) {
 167 +               rate_idx = rt2x00lib_rxdone_read_signal(rt2x00dev, &rxdesc);
 168 +       } else {
 169 +               rxdesc.flags |= RX_FLAG_HT;
 170 +               rate_idx = rxdesc.signal;
 171         }
 172
 173         /*
 174 @@ -405,7 +432,7 @@ void rt2x00lib_rxdone(struct rt2x00_dev
 175         rt2x00debug_update_crypto(rt2x00dev, &rxdesc);
 176
 177         rx_status->mactime = rxdesc.timestamp;
 178 -       rx_status->rate_idx = idx;
 179 +       rx_status->rate_idx = rate_idx;
 180         rx_status->qual = rt2x00link_calculate_signal(rt2x00dev, rxdesc.rssi);
 181         rx_status->signal = rxdesc.rssi;
 182         rx_status->noise = rxdesc.noise;
 183 @@ -440,72 +467,84 @@ const struct rt2x00_rate rt2x00_supporte
 184                 .bitrate = 10,
 185                 .ratemask = BIT(0),
 186                 .plcp = 0x00,
 187 +               .mcs = RATE_MCS(RATE_MODE_CCK, 0),
 188         },
 189         {
 190                 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
 191                 .bitrate = 20,
 192                 .ratemask = BIT(1),
 193                 .plcp = 0x01,
 194 +               .mcs = RATE_MCS(RATE_MODE_CCK, 1),
 195         },
 196         {
 197                 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
 198                 .bitrate = 55,
 199                 .ratemask = BIT(2),
 200                 .plcp = 0x02,
 201 +               .mcs = RATE_MCS(RATE_MODE_CCK, 2),
 202         },
 203         {
 204                 .flags = DEV_RATE_CCK | DEV_RATE_SHORT_PREAMBLE,
 205                 .bitrate = 110,
 206                 .ratemask = BIT(3),
 207                 .plcp = 0x03,
 208 +               .mcs = RATE_MCS(RATE_MODE_CCK, 3),
 209         },
 210         {
 211                 .flags = DEV_RATE_OFDM,
 212                 .bitrate = 60,
 213                 .ratemask = BIT(4),
 214                 .plcp = 0x0b,
 215 +               .mcs = RATE_MCS(RATE_MODE_OFDM, 0),
 216         },
 217         {
 218                 .flags = DEV_RATE_OFDM,
 219                 .bitrate = 90,
 220                 .ratemask = BIT(5),
 221                 .plcp = 0x0f,
 222 +               .mcs = RATE_MCS(RATE_MODE_OFDM, 1),
 223         },
 224         {
 225                 .flags = DEV_RATE_OFDM,
 226                 .bitrate = 120,
 227                 .ratemask = BIT(6),
 228                 .plcp = 0x0a,
 229 +               .mcs = RATE_MCS(RATE_MODE_OFDM, 2),
 230         },
 231         {
 232                 .flags = DEV_RATE_OFDM,
 233                 .bitrate = 180,
 234                 .ratemask = BIT(7),
 235                 .plcp = 0x0e,
 236 +               .mcs = RATE_MCS(RATE_MODE_OFDM, 3),
 237         },
 238         {
 239                 .flags = DEV_RATE_OFDM,
 240                 .bitrate = 240,
 241                 .ratemask = BIT(8),
 242                 .plcp = 0x09,
 243 +               .mcs = RATE_MCS(RATE_MODE_OFDM, 4),
 244         },
 245         {
 246                 .flags = DEV_RATE_OFDM,
 247                 .bitrate = 360,
 248                 .ratemask = BIT(9),
 249                 .plcp = 0x0d,
 250 +               .mcs = RATE_MCS(RATE_MODE_OFDM, 5),
 251         },
 252         {
 253                 .flags = DEV_RATE_OFDM,
 254                 .bitrate = 480,
 255                 .ratemask = BIT(10),
 256                 .plcp = 0x08,
 257 +               .mcs = RATE_MCS(RATE_MODE_OFDM, 6),
 258         },
 259         {
 260                 .flags = DEV_RATE_OFDM,
 261                 .bitrate = 540,
 262                 .ratemask = BIT(11),
 263                 .plcp = 0x0c,
 264 +               .mcs = RATE_MCS(RATE_MODE_OFDM, 7),
 265         },
 266  };
 267
 268 @@ -581,6 +620,8 @@ static int rt2x00lib_probe_hw_modes(stru
 269                 rt2x00dev->bands[IEEE80211_BAND_2GHZ].bitrates = rates;
 270                 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
 271                     &rt2x00dev->bands[IEEE80211_BAND_2GHZ];
 272 +               memcpy(&rt2x00dev->bands[IEEE80211_BAND_2GHZ].ht_cap,
 273 +                      &spec->ht, sizeof(spec->ht));
 274         }
 275
 276         /*
 277 @@ -597,6 +638,8 @@ static int rt2x00lib_probe_hw_modes(stru
 278                 rt2x00dev->bands[IEEE80211_BAND_5GHZ].bitrates = &rates[4];
 279                 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
 280                     &rt2x00dev->bands[IEEE80211_BAND_5GHZ];
 281 +               memcpy(&rt2x00dev->bands[IEEE80211_BAND_5GHZ].ht_cap,
 282 +                      &spec->ht, sizeof(spec->ht));
 283         }
 284
 285         return 0;
 286 --- /dev/null
 287 +++ b/drivers/net/wireless/rt2x00/rt2x00ht.c
 288 @@ -0,0 +1,69 @@
 289 +/*
 290 +       Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
 291 +       <http://rt2x00.serialmonkey.com>
 292 +
 293 +       This program is free software; you can redistribute it and/or modify
 294 +       it under the terms of the GNU General Public License as published by
 295 +       the Free Software Foundation; either version 2 of the License, or
 296 +       (at your option) any later version.
 297 +
 298 +       This program is distributed in the hope that it will be useful,
 299 +       but WITHOUT ANY WARRANTY; without even the implied warranty of
 300 +       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 301 +       GNU General Public License for more details.
 302 +
 303 +       You should have received a copy of the GNU General Public License
 304 +       along with this program; if not, write to the
 305 +       Free Software Foundation, Inc.,
 306 +       59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 307 + */
 308 +
 309 +/*
 310 +       Module: rt2x00lib
 311 +       Abstract: rt2x00 HT specific routines.
 312 + */
 313 +
 314 +#include <linux/kernel.h>
 315 +#include <linux/module.h>
 316 +
 317 +#include "rt2x00.h"
 318 +#include "rt2x00lib.h"
 319 +
 320 +void rt2x00ht_create_tx_descriptor(struct queue_entry *entry,
 321 +                                  struct txentry_desc *txdesc,
 322 +                                  const struct rt2x00_rate *hwrate)
 323 +{
 324 +       struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(entry->skb);
 325 +       struct ieee80211_tx_rate *txrate = &tx_info->control.rates[0];
 326 +
 327 +       if (tx_info->control.sta)
 328 +               txdesc->mpdu_density =
 329 +                   tx_info->control.sta->ht_cap.ampdu_density;
 330 +       else
 331 +               txdesc->mpdu_density = 0;
 332 +
 333 +       txdesc->ba_size = 7;    /* FIXME: What value is needed? */
 334 +       txdesc->stbc = 0;       /* FIXME: What value is needed? */
 335 +
 336 +       txdesc->mcs = rt2x00_get_rate_mcs(hwrate->mcs);
 337 +       if (txrate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
 338 +               txdesc->mcs |= 0x08;
 339 +
 340 +       /*
 341 +        * Convert flags
 342 +        */
 343 +       if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
 344 +               __set_bit(ENTRY_TXD_HT_AMPDU, &txdesc->flags);
 345 +
 346 +       /*
 347 +        * Determine HT Mix/Greenfield rate mode
 348 +        */
 349 +       if (txrate->flags & IEEE80211_TX_RC_MCS)
 350 +               txdesc->rate_mode = RATE_MODE_HT_MIX;
 351 +       if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD)
 352 +               txdesc->rate_mode = RATE_MODE_HT_GREENFIELD;
 353 +       if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 354 +               __set_bit(ENTRY_TXD_HT_BW_40, &txdesc->flags);
 355 +       if (txrate->flags & IEEE80211_TX_RC_SHORT_GI)
 356 +               __set_bit(ENTRY_TXD_HT_SHORT_GI, &txdesc->flags);
 357 +}
 358 --- a/drivers/net/wireless/rt2x00/rt2x00lib.h
 359 +++ b/drivers/net/wireless/rt2x00/rt2x00lib.h
 360 @@ -48,6 +48,7 @@ struct rt2x00_rate {
 361         unsigned short ratemask;
 362
 363         unsigned short plcp;
 364 +       unsigned short mcs;
 365  };
 366
 367  extern const struct rt2x00_rate rt2x00_supported_rates[12];
 368 @@ -57,6 +58,14 @@ static inline const struct rt2x00_rate *
 369         return &rt2x00_supported_rates[hw_value & 0xff];
 370  }
 371
 372 +#define RATE_MCS(__mode, __mcs) \
 373 +       ( (((__mode) & 0x00ff) << 8) | ((__mcs) & 0x00ff) )
 374 +
 375 +static inline int rt2x00_get_rate_mcs(const u16 mcs_value)
 376 +{
 377 +       return (mcs_value & 0x00ff);
 378 +}
 379 +
 380  /*
 381   * Radio control handlers.
 382   */
 383 @@ -341,6 +350,21 @@ static inline void rt2x00crypto_rx_inser
 384  #endif /* CONFIG_RT2X00_LIB_CRYPTO */
 385
 386  /*
 387 + * HT handlers.
 388 + */
 389 +#ifdef CONFIG_RT2X00_LIB_HT
 390 +void rt2x00ht_create_tx_descriptor(struct queue_entry *entry,
 391 +                                  struct txentry_desc *txdesc,
 392 +                                  const struct rt2x00_rate *hwrate);
 393 +#else
 394 +static inline void rt2x00ht_create_tx_descriptor(struct queue_entry *entry,
 395 +                                                struct txentry_desc *txdesc,
 396 +                                                const struct rt2x00_rate *hwrate)
 397 +{
 398 +}
 399 +#endif /* CONFIG_RT2X00_LIB_HT */
 400 +
 401 +/*
 402   * RFkill handlers.
 403   */
 404  #ifdef CONFIG_RT2X00_LIB_RFKILL
 405 --- a/drivers/net/wireless/rt2x00/rt2x00queue.c
 406 +++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
 407 @@ -326,6 +326,7 @@ static void rt2x00queue_create_tx_descri
 408          * Apply TX descriptor handling by components
 409          */
 410         rt2x00crypto_create_tx_descriptor(entry, txdesc);
 411 +       rt2x00ht_create_tx_descriptor(entry, txdesc, hwrate);
 412         rt2x00queue_create_tx_descriptor_seq(entry, txdesc);
 413         rt2x00queue_create_tx_descriptor_plcp(entry, txdesc, hwrate);
 414  }
 415 --- a/drivers/net/wireless/rt2x00/rt2x00queue.h
 416 +++ b/drivers/net/wireless/rt2x00/rt2x00queue.h
 417 @@ -35,9 +35,12 @@
 418   * for USB devices this restriction does not apply, but the value of
 419   * 2432 makes sense since it is big enough to contain the maximum fragment
 420   * size according to the ieee802.11 specs.
 421 + * The aggregation size depends on support from the driver, but should
 422 + * be something around 3840 bytes.
 423   */
 424 -#define DATA_FRAME_SIZE        2432
 425 -#define MGMT_FRAME_SIZE        256
 426 +#define DATA_FRAME_SIZE                2432
 427 +#define MGMT_FRAME_SIZE                256
 428 +#define AGGREGATION_SIZE       3840
 429
 430  /**
 431   * DOC: Number of entries per queue
 432 @@ -145,6 +148,7 @@ static inline struct skb_frame_desc* get
 433   *
 434   * @RXDONE_SIGNAL_PLCP: Signal field contains the plcp value.
 435   * @RXDONE_SIGNAL_BITRATE: Signal field contains the bitrate value.
 436 + * @RXDONE_SIGNAL_MCS: Signal field contains the mcs value.
 437   * @RXDONE_MY_BSS: Does this frame originate from device's BSS.
 438   * @RXDONE_CRYPTO_IV: Driver provided IV/EIV data.
 439   * @RXDONE_CRYPTO_ICV: Driver provided ICV data.
 440 @@ -152,9 +156,10 @@ static inline struct skb_frame_desc* get
 441  enum rxdone_entry_desc_flags {
 442         RXDONE_SIGNAL_PLCP = 1 << 0,
 443         RXDONE_SIGNAL_BITRATE = 1 << 1,
 444 -       RXDONE_MY_BSS = 1 << 2,
 445 -       RXDONE_CRYPTO_IV = 1 << 3,
 446 -       RXDONE_CRYPTO_ICV = 1 << 4,
 447 +       RXDONE_SIGNAL_MCS = 1 << 2,
 448 +       RXDONE_MY_BSS = 1 << 3,
 449 +       RXDONE_CRYPTO_IV = 1 << 4,
 450 +       RXDONE_CRYPTO_ICV = 1 << 5,
 451  };
 452
 453  /**
 454 @@ -163,7 +168,7 @@ enum rxdone_entry_desc_flags {
 455   * from &rxdone_entry_desc to a signal value type.
 456   */
 457  #define RXDONE_SIGNAL_MASK \
 458 -       ( RXDONE_SIGNAL_PLCP | RXDONE_SIGNAL_BITRATE )
 459 +       ( RXDONE_SIGNAL_PLCP | RXDONE_SIGNAL_BITRATE | RXDONE_SIGNAL_MCS )
 460
 461  /**
 462   * struct rxdone_entry_desc: RX Entry descriptor
 463 @@ -177,6 +182,7 @@ enum rxdone_entry_desc_flags {
 464   * @size: Data size of the received frame.
 465   * @flags: MAC80211 receive flags (See &enum mac80211_rx_flags).
 466   * @dev_flags: Ralink receive flags (See &enum rxdone_entry_desc_flags).
 467 + * @rate_mode: Rate mode (See @enum rate_modulation).
 468   * @cipher: Cipher type used during decryption.
 469   * @cipher_status: Decryption status.
 470   * @iv: IV/EIV data used during decryption.
 471 @@ -190,6 +196,7 @@ struct rxdone_entry_desc {
 472         int size;
 473         int flags;
 474         int dev_flags;
 475 +       u16 rate_mode;
 476         u8 cipher;
 477         u8 cipher_status;
 478
 479 @@ -243,6 +250,9 @@ struct txdone_entry_desc {
 480   * @ENTRY_TXD_ENCRYPT_PAIRWISE: Use pairwise key table (instead of shared).
 481   * @ENTRY_TXD_ENCRYPT_IV: Generate IV/EIV in hardware.
 482   * @ENTRY_TXD_ENCRYPT_MMIC: Generate MIC in hardware.
 483 + * @ENTRY_TXD_HT_AMPDU: This frame is part of an AMPDU.
 484 + * @ENTRY_TXD_HT_BW_40: Use 40MHz Bandwidth.
 485 + * @ENTRY_TXD_HT_SHORT_GI: Use short GI.
 486   */
 487  enum txentry_desc_flags {
 488         ENTRY_TXD_RTS_FRAME,
 489 @@ -258,6 +268,9 @@ enum txentry_desc_flags {
 490         ENTRY_TXD_ENCRYPT_PAIRWISE,
 491         ENTRY_TXD_ENCRYPT_IV,
 492         ENTRY_TXD_ENCRYPT_MMIC,
 493 +       ENTRY_TXD_HT_AMPDU,
 494 +       ENTRY_TXD_HT_BW_40,
 495 +       ENTRY_TXD_HT_SHORT_GI,
 496  };
 497
 498  /**
 499 @@ -271,7 +284,11 @@ enum txentry_desc_flags {
 500   * @length_low: PLCP length low word.
 501   * @signal: PLCP signal.
 502   * @service: PLCP service.
 503 + * @msc: MCS.
 504 + * @stbc: STBC.
 505 + * @ba_size: BA size.
 506   * @rate_mode: Rate mode (See @enum rate_modulation).
 507 + * @mpdu_density: MDPU density.
 508   * @retry_limit: Max number of retries.
 509   * @aifs: AIFS value.
 510   * @ifs: IFS value.
 511 @@ -291,7 +308,11 @@ struct txentry_desc {
 512         u16 signal;
 513         u16 service;
 514
 515 +       u16 mcs;
 516 +       u16 stbc;
 517 +       u16 ba_size;
 518         u16 rate_mode;
 519 +       u16 mpdu_density;
 520
 521         short retry_limit;
 522         short aifs;