forked from Minki/linux
922bac6022
Move its only member (u8 per) to struct ath_rate_priv. Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
1530 lines
45 KiB
C
1530 lines
45 KiB
C
/*
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* Copyright (c) 2004 Video54 Technologies, Inc.
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* Copyright (c) 2004-2009 Atheros Communications, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "ath9k.h"
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static const struct ath_rate_table ar5416_11na_ratetable = {
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42,
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{
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
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5400, 0x0b, 0x00, 12,
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0, 0, 0, 0, 0, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
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7800, 0x0f, 0x00, 18,
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0, 1, 1, 1, 1, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
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10000, 0x0a, 0x00, 24,
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2, 2, 2, 2, 2, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
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13900, 0x0e, 0x00, 36,
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2, 3, 3, 3, 3, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
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17300, 0x09, 0x00, 48,
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4, 4, 4, 4, 4, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
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23000, 0x0d, 0x00, 72,
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4, 5, 5, 5, 5, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
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27400, 0x08, 0x00, 96,
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4, 6, 6, 6, 6, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
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29300, 0x0c, 0x00, 108,
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4, 7, 7, 7, 7, 0 },
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{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
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6400, 0x80, 0x00, 0,
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0, 8, 24, 8, 24, 3216 },
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{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 13000, /* 13 Mb */
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12700, 0x81, 0x00, 1,
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2, 9, 25, 9, 25, 6434 },
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{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 19500, /* 19.5 Mb */
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18800, 0x82, 0x00, 2,
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2, 10, 26, 10, 26, 9650 },
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{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 26000, /* 26 Mb */
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25000, 0x83, 0x00, 3,
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4, 11, 27, 11, 27, 12868 },
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{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 39000, /* 39 Mb */
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36700, 0x84, 0x00, 4,
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4, 12, 28, 12, 28, 19304 },
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{ INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 52000, /* 52 Mb */
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48100, 0x85, 0x00, 5,
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4, 13, 29, 13, 29, 25740 },
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{ INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 58500, /* 58.5 Mb */
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53500, 0x86, 0x00, 6,
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4, 14, 30, 14, 30, 28956 },
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{ INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 65000, /* 65 Mb */
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59000, 0x87, 0x00, 7,
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4, 15, 31, 15, 32, 32180 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 13000, /* 13 Mb */
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12700, 0x88, 0x00,
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8, 3, 16, 33, 16, 33, 6430 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 26000, /* 26 Mb */
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24800, 0x89, 0x00, 9,
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2, 17, 34, 17, 34, 12860 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 39000, /* 39 Mb */
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36600, 0x8a, 0x00, 10,
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2, 18, 35, 18, 35, 19300 },
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{ VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 52000, /* 52 Mb */
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48100, 0x8b, 0x00, 11,
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4, 19, 36, 19, 36, 25736 },
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{ VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 78000, /* 78 Mb */
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69500, 0x8c, 0x00, 12,
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4, 20, 37, 20, 37, 38600 },
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{ VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 104000, /* 104 Mb */
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89500, 0x8d, 0x00, 13,
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4, 21, 38, 21, 38, 51472 },
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{ VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 117000, /* 117 Mb */
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98900, 0x8e, 0x00, 14,
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4, 22, 39, 22, 39, 57890 },
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{ VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 130000, /* 130 Mb */
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108300, 0x8f, 0x00, 15,
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4, 23, 40, 23, 41, 64320 },
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{ VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 13500, /* 13.5 Mb */
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13200, 0x80, 0x00, 0,
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0, 8, 24, 24, 24, 6684 },
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{ VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 27500, /* 27.0 Mb */
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25900, 0x81, 0x00, 1,
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2, 9, 25, 25, 25, 13368 },
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{ VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 40500, /* 40.5 Mb */
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38600, 0x82, 0x00, 2,
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2, 10, 26, 26, 26, 20052 },
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{ VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 54000, /* 54 Mb */
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49800, 0x83, 0x00, 3,
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4, 11, 27, 27, 27, 26738 },
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{ VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 81500, /* 81 Mb */
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72200, 0x84, 0x00, 4,
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4, 12, 28, 28, 28, 40104 },
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{ INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 108000, /* 108 Mb */
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92900, 0x85, 0x00, 5,
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4, 13, 29, 29, 29, 53476 },
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{ INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 121500, /* 121.5 Mb */
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102700, 0x86, 0x00, 6,
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4, 14, 30, 30, 30, 60156 },
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{ INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 135000, /* 135 Mb */
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112000, 0x87, 0x00, 7,
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4, 15, 31, 32, 32, 66840 },
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{ INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS_HGI, 150000, /* 150 Mb */
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122000, 0x87, 0x00, 7,
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4, 15, 31, 32, 32, 74200 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 27000, /* 27 Mb */
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25800, 0x88, 0x00, 8,
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0, 16, 33, 33, 33, 13360 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 54000, /* 54 Mb */
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49800, 0x89, 0x00, 9,
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2, 17, 34, 34, 34, 26720 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 81000, /* 81 Mb */
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71900, 0x8a, 0x00, 10,
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2, 18, 35, 35, 35, 40080 },
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 108000, /* 108 Mb */
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92500, 0x8b, 0x00, 11,
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4, 19, 36, 36, 36, 53440 },
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 162000, /* 162 Mb */
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130300, 0x8c, 0x00, 12,
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4, 20, 37, 37, 37, 80160 },
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 216000, /* 216 Mb */
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162800, 0x8d, 0x00, 13,
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4, 21, 38, 38, 38, 106880 },
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 243000, /* 243 Mb */
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178200, 0x8e, 0x00, 14,
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4, 22, 39, 39, 39, 120240 },
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 270000, /* 270 Mb */
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192100, 0x8f, 0x00, 15,
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4, 23, 40, 41, 41, 133600 },
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS_HGI, 300000, /* 300 Mb */
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207000, 0x8f, 0x00, 15,
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4, 23, 40, 41, 41, 148400 },
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},
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50, /* probe interval */
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WLAN_RC_HT_FLAG, /* Phy rates allowed initially */
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};
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/* 4ms frame limit not used for NG mode. The values filled
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* for HT are the 64K max aggregate limit */
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static const struct ath_rate_table ar5416_11ng_ratetable = {
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46,
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{
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{ VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */
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900, 0x1b, 0x00, 2,
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0, 0, 0, 0, 0, 0 },
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{ VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 2000, /* 2 Mb */
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1900, 0x1a, 0x04, 4,
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1, 1, 1, 1, 1, 0 },
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{ VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 5500, /* 5.5 Mb */
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4900, 0x19, 0x04, 11,
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2, 2, 2, 2, 2, 0 },
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{ VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 11000, /* 11 Mb */
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8100, 0x18, 0x04, 22,
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3, 3, 3, 3, 3, 0 },
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{ INVALID, INVALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
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5400, 0x0b, 0x00, 12,
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4, 4, 4, 4, 4, 0 },
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{ INVALID, INVALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
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7800, 0x0f, 0x00, 18,
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4, 5, 5, 5, 5, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
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10100, 0x0a, 0x00, 24,
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6, 6, 6, 6, 6, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
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14100, 0x0e, 0x00, 36,
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6, 7, 7, 7, 7, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
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17700, 0x09, 0x00, 48,
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8, 8, 8, 8, 8, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
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23700, 0x0d, 0x00, 72,
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8, 9, 9, 9, 9, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
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27400, 0x08, 0x00, 96,
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8, 10, 10, 10, 10, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
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30900, 0x0c, 0x00, 108,
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8, 11, 11, 11, 11, 0 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
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6400, 0x80, 0x00, 0,
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4, 12, 28, 12, 28, 3216 },
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{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 13000, /* 13 Mb */
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12700, 0x81, 0x00, 1,
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6, 13, 29, 13, 29, 6434 },
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{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 19500, /* 19.5 Mb */
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18800, 0x82, 0x00, 2,
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6, 14, 30, 14, 30, 9650 },
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{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 26000, /* 26 Mb */
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25000, 0x83, 0x00, 3,
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8, 15, 31, 15, 31, 12868 },
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{ VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 39000, /* 39 Mb */
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36700, 0x84, 0x00, 4,
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8, 16, 32, 16, 32, 19304 },
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{ INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 52000, /* 52 Mb */
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48100, 0x85, 0x00, 5,
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8, 17, 33, 17, 33, 25740 },
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{ INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 58500, /* 58.5 Mb */
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53500, 0x86, 0x00, 6,
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8, 18, 34, 18, 34, 28956 },
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{ INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 65000, /* 65 Mb */
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59000, 0x87, 0x00, 7,
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8, 19, 35, 19, 36, 32180 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 13000, /* 13 Mb */
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12700, 0x88, 0x00, 8,
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4, 20, 37, 20, 37, 6430 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 26000, /* 26 Mb */
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24800, 0x89, 0x00, 9,
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6, 21, 38, 21, 38, 12860 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 39000, /* 39 Mb */
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36600, 0x8a, 0x00, 10,
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6, 22, 39, 22, 39, 19300 },
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{ VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 52000, /* 52 Mb */
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48100, 0x8b, 0x00, 11,
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8, 23, 40, 23, 40, 25736 },
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{ VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 78000, /* 78 Mb */
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69500, 0x8c, 0x00, 12,
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8, 24, 41, 24, 41, 38600 },
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{ VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 104000, /* 104 Mb */
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89500, 0x8d, 0x00, 13,
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8, 25, 42, 25, 42, 51472 },
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{ VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 117000, /* 117 Mb */
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98900, 0x8e, 0x00, 14,
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8, 26, 43, 26, 44, 57890 },
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{ VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 130000, /* 130 Mb */
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108300, 0x8f, 0x00, 15,
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8, 27, 44, 27, 45, 64320 },
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{ VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 13500, /* 13.5 Mb */
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13200, 0x80, 0x00, 0,
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8, 12, 28, 28, 28, 6684 },
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{ VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 27500, /* 27.0 Mb */
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25900, 0x81, 0x00, 1,
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8, 13, 29, 29, 29, 13368 },
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{ VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 40500, /* 40.5 Mb */
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38600, 0x82, 0x00, 2,
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8, 14, 30, 30, 30, 20052 },
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{ VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 54000, /* 54 Mb */
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49800, 0x83, 0x00, 3,
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8, 15, 31, 31, 31, 26738 },
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{ VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 81500, /* 81 Mb */
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72200, 0x84, 0x00, 4,
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8, 16, 32, 32, 32, 40104 },
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{ INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 108000, /* 108 Mb */
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92900, 0x85, 0x00, 5,
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8, 17, 33, 33, 33, 53476 },
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{ INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 121500, /* 121.5 Mb */
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102700, 0x86, 0x00, 6,
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8, 18, 34, 34, 34, 60156 },
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{ INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 135000, /* 135 Mb */
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112000, 0x87, 0x00, 7,
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8, 19, 35, 36, 36, 66840 },
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{ INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS_HGI, 150000, /* 150 Mb */
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122000, 0x87, 0x00, 7,
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8, 19, 35, 36, 36, 74200 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 27000, /* 27 Mb */
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25800, 0x88, 0x00, 8,
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8, 20, 37, 37, 37, 13360 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 54000, /* 54 Mb */
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49800, 0x89, 0x00, 9,
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8, 21, 38, 38, 38, 26720 },
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{ INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 81000, /* 81 Mb */
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71900, 0x8a, 0x00, 10,
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8, 22, 39, 39, 39, 40080 },
|
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 108000, /* 108 Mb */
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92500, 0x8b, 0x00, 11,
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8, 23, 40, 40, 40, 53440 },
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 162000, /* 162 Mb */
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130300, 0x8c, 0x00, 12,
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8, 24, 41, 41, 41, 80160 },
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 216000, /* 216 Mb */
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162800, 0x8d, 0x00, 13,
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8, 25, 42, 42, 42, 106880 },
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 243000, /* 243 Mb */
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178200, 0x8e, 0x00, 14,
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8, 26, 43, 43, 43, 120240 },
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 270000, /* 270 Mb */
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192100, 0x8f, 0x00, 15,
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8, 27, 44, 45, 45, 133600 },
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{ VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS_HGI, 300000, /* 300 Mb */
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207000, 0x8f, 0x00, 15,
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8, 27, 44, 45, 45, 148400 },
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},
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50, /* probe interval */
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WLAN_RC_HT_FLAG, /* Phy rates allowed initially */
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};
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static const struct ath_rate_table ar5416_11a_ratetable = {
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8,
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{
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
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5400, 0x0b, 0x00, (0x80|12),
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0, 0, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
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7800, 0x0f, 0x00, 18,
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0, 1, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
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10000, 0x0a, 0x00, (0x80|24),
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2, 2, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
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13900, 0x0e, 0x00, 36,
|
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2, 3, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
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17300, 0x09, 0x00, (0x80|48),
|
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4, 4, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
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23000, 0x0d, 0x00, 72,
|
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4, 5, 0 },
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{ VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
|
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27400, 0x08, 0x00, 96,
|
|
4, 6, 0 },
|
|
{ VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
|
|
29300, 0x0c, 0x00, 108,
|
|
4, 7, 0 },
|
|
},
|
|
50, /* probe interval */
|
|
0, /* Phy rates allowed initially */
|
|
};
|
|
|
|
static const struct ath_rate_table ar5416_11g_ratetable = {
|
|
12,
|
|
{
|
|
{ VALID, VALID, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */
|
|
900, 0x1b, 0x00, 2,
|
|
0, 0, 0 },
|
|
{ VALID, VALID, WLAN_RC_PHY_CCK, 2000, /* 2 Mb */
|
|
1900, 0x1a, 0x04, 4,
|
|
1, 1, 0 },
|
|
{ VALID, VALID, WLAN_RC_PHY_CCK, 5500, /* 5.5 Mb */
|
|
4900, 0x19, 0x04, 11,
|
|
2, 2, 0 },
|
|
{ VALID, VALID, WLAN_RC_PHY_CCK, 11000, /* 11 Mb */
|
|
8100, 0x18, 0x04, 22,
|
|
3, 3, 0 },
|
|
{ INVALID, INVALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
|
|
5400, 0x0b, 0x00, 12,
|
|
4, 4, 0 },
|
|
{ INVALID, INVALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
|
|
7800, 0x0f, 0x00, 18,
|
|
4, 5, 0 },
|
|
{ VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
|
|
10000, 0x0a, 0x00, 24,
|
|
6, 6, 0 },
|
|
{ VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
|
|
13900, 0x0e, 0x00, 36,
|
|
6, 7, 0 },
|
|
{ VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
|
|
17300, 0x09, 0x00, 48,
|
|
8, 8, 0 },
|
|
{ VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
|
|
23000, 0x0d, 0x00, 72,
|
|
8, 9, 0 },
|
|
{ VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
|
|
27400, 0x08, 0x00, 96,
|
|
8, 10, 0 },
|
|
{ VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
|
|
29300, 0x0c, 0x00, 108,
|
|
8, 11, 0 },
|
|
},
|
|
50, /* probe interval */
|
|
0, /* Phy rates allowed initially */
|
|
};
|
|
|
|
static inline int8_t median(int8_t a, int8_t b, int8_t c)
|
|
{
|
|
if (a >= b) {
|
|
if (b >= c)
|
|
return b;
|
|
else if (a > c)
|
|
return c;
|
|
else
|
|
return a;
|
|
} else {
|
|
if (a >= c)
|
|
return a;
|
|
else if (b >= c)
|
|
return c;
|
|
else
|
|
return b;
|
|
}
|
|
}
|
|
|
|
static void ath_rc_sort_validrates(const struct ath_rate_table *rate_table,
|
|
struct ath_rate_priv *ath_rc_priv)
|
|
{
|
|
u8 i, j, idx, idx_next;
|
|
|
|
for (i = ath_rc_priv->max_valid_rate - 1; i > 0; i--) {
|
|
for (j = 0; j <= i-1; j++) {
|
|
idx = ath_rc_priv->valid_rate_index[j];
|
|
idx_next = ath_rc_priv->valid_rate_index[j+1];
|
|
|
|
if (rate_table->info[idx].ratekbps >
|
|
rate_table->info[idx_next].ratekbps) {
|
|
ath_rc_priv->valid_rate_index[j] = idx_next;
|
|
ath_rc_priv->valid_rate_index[j+1] = idx;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ath_rc_init_valid_txmask(struct ath_rate_priv *ath_rc_priv)
|
|
{
|
|
u8 i;
|
|
|
|
for (i = 0; i < ath_rc_priv->rate_table_size; i++)
|
|
ath_rc_priv->valid_rate_index[i] = 0;
|
|
}
|
|
|
|
static inline void ath_rc_set_valid_txmask(struct ath_rate_priv *ath_rc_priv,
|
|
u8 index, int valid_tx_rate)
|
|
{
|
|
ASSERT(index <= ath_rc_priv->rate_table_size);
|
|
ath_rc_priv->valid_rate_index[index] = valid_tx_rate ? 1 : 0;
|
|
}
|
|
|
|
static inline
|
|
int ath_rc_get_nextvalid_txrate(const struct ath_rate_table *rate_table,
|
|
struct ath_rate_priv *ath_rc_priv,
|
|
u8 cur_valid_txrate,
|
|
u8 *next_idx)
|
|
{
|
|
u8 i;
|
|
|
|
for (i = 0; i < ath_rc_priv->max_valid_rate - 1; i++) {
|
|
if (ath_rc_priv->valid_rate_index[i] == cur_valid_txrate) {
|
|
*next_idx = ath_rc_priv->valid_rate_index[i+1];
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* No more valid rates */
|
|
*next_idx = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Return true only for single stream */
|
|
|
|
static int ath_rc_valid_phyrate(u32 phy, u32 capflag, int ignore_cw)
|
|
{
|
|
if (WLAN_RC_PHY_HT(phy) && !(capflag & WLAN_RC_HT_FLAG))
|
|
return 0;
|
|
if (WLAN_RC_PHY_DS(phy) && !(capflag & WLAN_RC_DS_FLAG))
|
|
return 0;
|
|
if (WLAN_RC_PHY_SGI(phy) && !(capflag & WLAN_RC_SGI_FLAG))
|
|
return 0;
|
|
if (!ignore_cw && WLAN_RC_PHY_HT(phy))
|
|
if (WLAN_RC_PHY_40(phy) && !(capflag & WLAN_RC_40_FLAG))
|
|
return 0;
|
|
if (!WLAN_RC_PHY_40(phy) && (capflag & WLAN_RC_40_FLAG))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
static inline int
|
|
ath_rc_get_lower_rix(const struct ath_rate_table *rate_table,
|
|
struct ath_rate_priv *ath_rc_priv,
|
|
u8 cur_valid_txrate, u8 *next_idx)
|
|
{
|
|
int8_t i;
|
|
|
|
for (i = 1; i < ath_rc_priv->max_valid_rate ; i++) {
|
|
if (ath_rc_priv->valid_rate_index[i] == cur_valid_txrate) {
|
|
*next_idx = ath_rc_priv->valid_rate_index[i-1];
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u8 ath_rc_init_validrates(struct ath_rate_priv *ath_rc_priv,
|
|
const struct ath_rate_table *rate_table,
|
|
u32 capflag)
|
|
{
|
|
u8 i, hi = 0;
|
|
u32 valid;
|
|
|
|
for (i = 0; i < rate_table->rate_cnt; i++) {
|
|
valid = (!(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG) ?
|
|
rate_table->info[i].valid_single_stream :
|
|
rate_table->info[i].valid);
|
|
if (valid == 1) {
|
|
u32 phy = rate_table->info[i].phy;
|
|
u8 valid_rate_count = 0;
|
|
|
|
if (!ath_rc_valid_phyrate(phy, capflag, 0))
|
|
continue;
|
|
|
|
valid_rate_count = ath_rc_priv->valid_phy_ratecnt[phy];
|
|
|
|
ath_rc_priv->valid_phy_rateidx[phy][valid_rate_count] = i;
|
|
ath_rc_priv->valid_phy_ratecnt[phy] += 1;
|
|
ath_rc_set_valid_txmask(ath_rc_priv, i, 1);
|
|
hi = A_MAX(hi, i);
|
|
}
|
|
}
|
|
|
|
return hi;
|
|
}
|
|
|
|
static u8 ath_rc_setvalid_rates(struct ath_rate_priv *ath_rc_priv,
|
|
const struct ath_rate_table *rate_table,
|
|
struct ath_rateset *rateset,
|
|
u32 capflag)
|
|
{
|
|
u8 i, j, hi = 0;
|
|
|
|
/* Use intersection of working rates and valid rates */
|
|
for (i = 0; i < rateset->rs_nrates; i++) {
|
|
for (j = 0; j < rate_table->rate_cnt; j++) {
|
|
u32 phy = rate_table->info[j].phy;
|
|
u32 valid = (!(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG) ?
|
|
rate_table->info[j].valid_single_stream :
|
|
rate_table->info[j].valid);
|
|
u8 rate = rateset->rs_rates[i];
|
|
u8 dot11rate = rate_table->info[j].dot11rate;
|
|
|
|
/* We allow a rate only if its valid and the
|
|
* capflag matches one of the validity
|
|
* (VALID/VALID_20/VALID_40) flags */
|
|
|
|
if (((rate & 0x7F) == (dot11rate & 0x7F)) &&
|
|
((valid & WLAN_RC_CAP_MODE(capflag)) ==
|
|
WLAN_RC_CAP_MODE(capflag)) &&
|
|
!WLAN_RC_PHY_HT(phy)) {
|
|
u8 valid_rate_count = 0;
|
|
|
|
if (!ath_rc_valid_phyrate(phy, capflag, 0))
|
|
continue;
|
|
|
|
valid_rate_count =
|
|
ath_rc_priv->valid_phy_ratecnt[phy];
|
|
|
|
ath_rc_priv->valid_phy_rateidx[phy]
|
|
[valid_rate_count] = j;
|
|
ath_rc_priv->valid_phy_ratecnt[phy] += 1;
|
|
ath_rc_set_valid_txmask(ath_rc_priv, j, 1);
|
|
hi = A_MAX(hi, j);
|
|
}
|
|
}
|
|
}
|
|
|
|
return hi;
|
|
}
|
|
|
|
static u8 ath_rc_setvalid_htrates(struct ath_rate_priv *ath_rc_priv,
|
|
const struct ath_rate_table *rate_table,
|
|
u8 *mcs_set, u32 capflag)
|
|
{
|
|
struct ath_rateset *rateset = (struct ath_rateset *)mcs_set;
|
|
|
|
u8 i, j, hi = 0;
|
|
|
|
/* Use intersection of working rates and valid rates */
|
|
for (i = 0; i < rateset->rs_nrates; i++) {
|
|
for (j = 0; j < rate_table->rate_cnt; j++) {
|
|
u32 phy = rate_table->info[j].phy;
|
|
u32 valid = (!(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG) ?
|
|
rate_table->info[j].valid_single_stream :
|
|
rate_table->info[j].valid);
|
|
u8 rate = rateset->rs_rates[i];
|
|
u8 dot11rate = rate_table->info[j].dot11rate;
|
|
|
|
if (((rate & 0x7F) != (dot11rate & 0x7F)) ||
|
|
!WLAN_RC_PHY_HT(phy) ||
|
|
!WLAN_RC_PHY_HT_VALID(valid, capflag))
|
|
continue;
|
|
|
|
if (!ath_rc_valid_phyrate(phy, capflag, 0))
|
|
continue;
|
|
|
|
ath_rc_priv->valid_phy_rateidx[phy]
|
|
[ath_rc_priv->valid_phy_ratecnt[phy]] = j;
|
|
ath_rc_priv->valid_phy_ratecnt[phy] += 1;
|
|
ath_rc_set_valid_txmask(ath_rc_priv, j, 1);
|
|
hi = A_MAX(hi, j);
|
|
}
|
|
}
|
|
|
|
return hi;
|
|
}
|
|
|
|
/* Finds the highest rate index we can use */
|
|
static u8 ath_rc_get_highest_rix(struct ath_softc *sc,
|
|
struct ath_rate_priv *ath_rc_priv,
|
|
const struct ath_rate_table *rate_table,
|
|
int *is_probing)
|
|
{
|
|
u32 best_thruput, this_thruput, now_msec;
|
|
u8 rate, next_rate, best_rate, maxindex, minindex;
|
|
int8_t index = 0;
|
|
|
|
now_msec = jiffies_to_msecs(jiffies);
|
|
*is_probing = 0;
|
|
best_thruput = 0;
|
|
maxindex = ath_rc_priv->max_valid_rate-1;
|
|
minindex = 0;
|
|
best_rate = minindex;
|
|
|
|
/*
|
|
* Try the higher rate first. It will reduce memory moving time
|
|
* if we have very good channel characteristics.
|
|
*/
|
|
for (index = maxindex; index >= minindex ; index--) {
|
|
u8 per_thres;
|
|
|
|
rate = ath_rc_priv->valid_rate_index[index];
|
|
if (rate > ath_rc_priv->rate_max_phy)
|
|
continue;
|
|
|
|
/*
|
|
* For TCP the average collision rate is around 11%,
|
|
* so we ignore PERs less than this. This is to
|
|
* prevent the rate we are currently using (whose
|
|
* PER might be in the 10-15 range because of TCP
|
|
* collisions) looking worse than the next lower
|
|
* rate whose PER has decayed close to 0. If we
|
|
* used to next lower rate, its PER would grow to
|
|
* 10-15 and we would be worse off then staying
|
|
* at the current rate.
|
|
*/
|
|
per_thres = ath_rc_priv->per[rate];
|
|
if (per_thres < 12)
|
|
per_thres = 12;
|
|
|
|
this_thruput = rate_table->info[rate].user_ratekbps *
|
|
(100 - per_thres);
|
|
|
|
if (best_thruput <= this_thruput) {
|
|
best_thruput = this_thruput;
|
|
best_rate = rate;
|
|
}
|
|
}
|
|
|
|
rate = best_rate;
|
|
|
|
/*
|
|
* Must check the actual rate (ratekbps) to account for
|
|
* non-monoticity of 11g's rate table
|
|
*/
|
|
|
|
if (rate >= ath_rc_priv->rate_max_phy) {
|
|
rate = ath_rc_priv->rate_max_phy;
|
|
|
|
/* Probe the next allowed phy state */
|
|
if (ath_rc_get_nextvalid_txrate(rate_table,
|
|
ath_rc_priv, rate, &next_rate) &&
|
|
(now_msec - ath_rc_priv->probe_time >
|
|
rate_table->probe_interval) &&
|
|
(ath_rc_priv->hw_maxretry_pktcnt >= 1)) {
|
|
rate = next_rate;
|
|
ath_rc_priv->probe_rate = rate;
|
|
ath_rc_priv->probe_time = now_msec;
|
|
ath_rc_priv->hw_maxretry_pktcnt = 0;
|
|
*is_probing = 1;
|
|
}
|
|
}
|
|
|
|
if (rate > (ath_rc_priv->rate_table_size - 1))
|
|
rate = ath_rc_priv->rate_table_size - 1;
|
|
|
|
if (rate_table->info[rate].valid &&
|
|
(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG))
|
|
return rate;
|
|
|
|
if (rate_table->info[rate].valid_single_stream &&
|
|
!(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG));
|
|
return rate;
|
|
|
|
/* This should not happen */
|
|
WARN_ON(1);
|
|
|
|
rate = ath_rc_priv->valid_rate_index[0];
|
|
|
|
return rate;
|
|
}
|
|
|
|
static void ath_rc_rate_set_series(const struct ath_rate_table *rate_table,
|
|
struct ieee80211_tx_rate *rate,
|
|
struct ieee80211_tx_rate_control *txrc,
|
|
u8 tries, u8 rix, int rtsctsenable)
|
|
{
|
|
rate->count = tries;
|
|
rate->idx = rix;
|
|
|
|
if (txrc->short_preamble)
|
|
rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
|
|
if (txrc->rts || rtsctsenable)
|
|
rate->flags |= IEEE80211_TX_RC_USE_RTS_CTS;
|
|
if (WLAN_RC_PHY_40(rate_table->info[rix].phy))
|
|
rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
|
|
if (WLAN_RC_PHY_SGI(rate_table->info[rix].phy))
|
|
rate->flags |= IEEE80211_TX_RC_SHORT_GI;
|
|
if (WLAN_RC_PHY_HT(rate_table->info[rix].phy))
|
|
rate->flags |= IEEE80211_TX_RC_MCS;
|
|
}
|
|
|
|
static void ath_rc_rate_set_rtscts(struct ath_softc *sc,
|
|
const struct ath_rate_table *rate_table,
|
|
struct ieee80211_tx_info *tx_info)
|
|
{
|
|
struct ieee80211_tx_rate *rates = tx_info->control.rates;
|
|
int i = 0, rix = 0, cix, enable_g_protection = 0;
|
|
|
|
/* get the cix for the lowest valid rix */
|
|
for (i = 3; i >= 0; i--) {
|
|
if (rates[i].count && (rates[i].idx >= 0)) {
|
|
rix = rates[i].idx;
|
|
break;
|
|
}
|
|
}
|
|
cix = rate_table->info[rix].ctrl_rate;
|
|
|
|
/* All protection frames are transmited at 2Mb/s for 802.11g,
|
|
* otherwise we transmit them at 1Mb/s */
|
|
if (sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ &&
|
|
!conf_is_ht(&sc->hw->conf))
|
|
enable_g_protection = 1;
|
|
|
|
/*
|
|
* If 802.11g protection is enabled, determine whether to use RTS/CTS or
|
|
* just CTS. Note that this is only done for OFDM/HT unicast frames.
|
|
*/
|
|
if ((sc->sc_flags & SC_OP_PROTECT_ENABLE) &&
|
|
(rate_table->info[rix].phy == WLAN_RC_PHY_OFDM ||
|
|
WLAN_RC_PHY_HT(rate_table->info[rix].phy))) {
|
|
rates[0].flags |= IEEE80211_TX_RC_USE_CTS_PROTECT;
|
|
cix = rate_table->info[enable_g_protection].ctrl_rate;
|
|
}
|
|
|
|
tx_info->control.rts_cts_rate_idx = cix;
|
|
}
|
|
|
|
static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
|
|
struct ieee80211_tx_rate_control *txrc)
|
|
{
|
|
struct ath_softc *sc = priv;
|
|
struct ath_rate_priv *ath_rc_priv = priv_sta;
|
|
const struct ath_rate_table *rate_table;
|
|
struct sk_buff *skb = txrc->skb;
|
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
|
|
struct ieee80211_tx_rate *rates = tx_info->control.rates;
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
|
__le16 fc = hdr->frame_control;
|
|
u8 try_per_rate, i = 0, rix, nrix;
|
|
int is_probe = 0;
|
|
|
|
if (rate_control_send_low(sta, priv_sta, txrc))
|
|
return;
|
|
|
|
/*
|
|
* For Multi Rate Retry we use a different number of
|
|
* retry attempt counts. This ends up looking like this:
|
|
*
|
|
* MRR[0] = 2
|
|
* MRR[1] = 2
|
|
* MRR[2] = 2
|
|
* MRR[3] = 4
|
|
*
|
|
*/
|
|
try_per_rate = sc->hw->max_rate_tries;
|
|
|
|
rate_table = sc->cur_rate_table;
|
|
rix = ath_rc_get_highest_rix(sc, ath_rc_priv, rate_table, &is_probe);
|
|
nrix = rix;
|
|
|
|
if (is_probe) {
|
|
/* set one try for probe rates. For the
|
|
* probes don't enable rts */
|
|
ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
|
|
1, nrix, 0);
|
|
|
|
/* Get the next tried/allowed rate. No RTS for the next series
|
|
* after the probe rate
|
|
*/
|
|
ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &nrix);
|
|
ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
|
|
try_per_rate, nrix, 0);
|
|
|
|
tx_info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
|
|
} else {
|
|
/* Set the choosen rate. No RTS for first series entry. */
|
|
ath_rc_rate_set_series(rate_table, &rates[i++], txrc,
|
|
try_per_rate, nrix, 0);
|
|
}
|
|
|
|
/* Fill in the other rates for multirate retry */
|
|
for ( ; i < 4; i++) {
|
|
/* Use twice the number of tries for the last MRR segment. */
|
|
if (i + 1 == 4)
|
|
try_per_rate = 4;
|
|
|
|
ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &nrix);
|
|
/* All other rates in the series have RTS enabled */
|
|
ath_rc_rate_set_series(rate_table, &rates[i], txrc,
|
|
try_per_rate, nrix, 1);
|
|
}
|
|
|
|
/*
|
|
* NB:Change rate series to enable aggregation when operating
|
|
* at lower MCS rates. When first rate in series is MCS2
|
|
* in HT40 @ 2.4GHz, series should look like:
|
|
*
|
|
* {MCS2, MCS1, MCS0, MCS0}.
|
|
*
|
|
* When first rate in series is MCS3 in HT20 @ 2.4GHz, series should
|
|
* look like:
|
|
*
|
|
* {MCS3, MCS2, MCS1, MCS1}
|
|
*
|
|
* So, set fourth rate in series to be same as third one for
|
|
* above conditions.
|
|
*/
|
|
if ((sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ) &&
|
|
(conf_is_ht(&sc->hw->conf))) {
|
|
u8 dot11rate = rate_table->info[rix].dot11rate;
|
|
u8 phy = rate_table->info[rix].phy;
|
|
if (i == 4 &&
|
|
((dot11rate == 2 && phy == WLAN_RC_PHY_HT_40_SS) ||
|
|
(dot11rate == 3 && phy == WLAN_RC_PHY_HT_20_SS))) {
|
|
rates[3].idx = rates[2].idx;
|
|
rates[3].flags = rates[2].flags;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Force hardware to use computed duration for next
|
|
* fragment by disabling multi-rate retry, which
|
|
* updates duration based on the multi-rate duration table.
|
|
*
|
|
* FIXME: Fix duration
|
|
*/
|
|
if (ieee80211_has_morefrags(fc) ||
|
|
(le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG)) {
|
|
rates[1].count = rates[2].count = rates[3].count = 0;
|
|
rates[1].idx = rates[2].idx = rates[3].idx = 0;
|
|
rates[0].count = ATH_TXMAXTRY;
|
|
}
|
|
|
|
/* Setup RTS/CTS */
|
|
ath_rc_rate_set_rtscts(sc, rate_table, tx_info);
|
|
}
|
|
|
|
static bool ath_rc_update_per(struct ath_softc *sc,
|
|
const struct ath_rate_table *rate_table,
|
|
struct ath_rate_priv *ath_rc_priv,
|
|
struct ath_tx_info_priv *tx_info_priv,
|
|
int tx_rate, int xretries, int retries,
|
|
u32 now_msec)
|
|
{
|
|
bool state_change = false;
|
|
int count;
|
|
u8 last_per;
|
|
static u32 nretry_to_per_lookup[10] = {
|
|
100 * 0 / 1,
|
|
100 * 1 / 4,
|
|
100 * 1 / 2,
|
|
100 * 3 / 4,
|
|
100 * 4 / 5,
|
|
100 * 5 / 6,
|
|
100 * 6 / 7,
|
|
100 * 7 / 8,
|
|
100 * 8 / 9,
|
|
100 * 9 / 10
|
|
};
|
|
|
|
last_per = ath_rc_priv->per[tx_rate];
|
|
|
|
if (xretries) {
|
|
if (xretries == 1) {
|
|
ath_rc_priv->per[tx_rate] += 30;
|
|
if (ath_rc_priv->per[tx_rate] > 100)
|
|
ath_rc_priv->per[tx_rate] = 100;
|
|
} else {
|
|
/* xretries == 2 */
|
|
count = ARRAY_SIZE(nretry_to_per_lookup);
|
|
if (retries >= count)
|
|
retries = count - 1;
|
|
|
|
/* new_PER = 7/8*old_PER + 1/8*(currentPER) */
|
|
ath_rc_priv->per[tx_rate] =
|
|
(u8)(last_per - (last_per >> 3) + (100 >> 3));
|
|
}
|
|
|
|
/* xretries == 1 or 2 */
|
|
|
|
if (ath_rc_priv->probe_rate == tx_rate)
|
|
ath_rc_priv->probe_rate = 0;
|
|
|
|
} else { /* xretries == 0 */
|
|
count = ARRAY_SIZE(nretry_to_per_lookup);
|
|
if (retries >= count)
|
|
retries = count - 1;
|
|
|
|
if (tx_info_priv->n_bad_frames) {
|
|
/* new_PER = 7/8*old_PER + 1/8*(currentPER)
|
|
* Assuming that n_frames is not 0. The current PER
|
|
* from the retries is 100 * retries / (retries+1),
|
|
* since the first retries attempts failed, and the
|
|
* next one worked. For the one that worked,
|
|
* n_bad_frames subframes out of n_frames wored,
|
|
* so the PER for that part is
|
|
* 100 * n_bad_frames / n_frames, and it contributes
|
|
* 100 * n_bad_frames / (n_frames * (retries+1)) to
|
|
* the above PER. The expression below is a
|
|
* simplified version of the sum of these two terms.
|
|
*/
|
|
if (tx_info_priv->n_frames > 0) {
|
|
int n_frames, n_bad_frames;
|
|
u8 cur_per, new_per;
|
|
|
|
n_bad_frames = retries * tx_info_priv->n_frames +
|
|
tx_info_priv->n_bad_frames;
|
|
n_frames = tx_info_priv->n_frames * (retries + 1);
|
|
cur_per = (100 * n_bad_frames / n_frames) >> 3;
|
|
new_per = (u8)(last_per - (last_per >> 3) + cur_per);
|
|
ath_rc_priv->per[tx_rate] = new_per;
|
|
}
|
|
} else {
|
|
ath_rc_priv->per[tx_rate] =
|
|
(u8)(last_per - (last_per >> 3) +
|
|
(nretry_to_per_lookup[retries] >> 3));
|
|
}
|
|
|
|
|
|
/*
|
|
* If we got at most one retry then increase the max rate if
|
|
* this was a probe. Otherwise, ignore the probe.
|
|
*/
|
|
if (ath_rc_priv->probe_rate && ath_rc_priv->probe_rate == tx_rate) {
|
|
if (retries > 0 || 2 * tx_info_priv->n_bad_frames >
|
|
tx_info_priv->n_frames) {
|
|
/*
|
|
* Since we probed with just a single attempt,
|
|
* any retries means the probe failed. Also,
|
|
* if the attempt worked, but more than half
|
|
* the subframes were bad then also consider
|
|
* the probe a failure.
|
|
*/
|
|
ath_rc_priv->probe_rate = 0;
|
|
} else {
|
|
u8 probe_rate = 0;
|
|
|
|
ath_rc_priv->rate_max_phy =
|
|
ath_rc_priv->probe_rate;
|
|
probe_rate = ath_rc_priv->probe_rate;
|
|
|
|
if (ath_rc_priv->per[probe_rate] > 30)
|
|
ath_rc_priv->per[probe_rate] = 20;
|
|
|
|
ath_rc_priv->probe_rate = 0;
|
|
|
|
/*
|
|
* Since this probe succeeded, we allow the next
|
|
* probe twice as soon. This allows the maxRate
|
|
* to move up faster if the probes are
|
|
* succesful.
|
|
*/
|
|
ath_rc_priv->probe_time =
|
|
now_msec - rate_table->probe_interval / 2;
|
|
}
|
|
}
|
|
|
|
if (retries > 0) {
|
|
/*
|
|
* Don't update anything. We don't know if
|
|
* this was because of collisions or poor signal.
|
|
*/
|
|
ath_rc_priv->hw_maxretry_pktcnt = 0;
|
|
} else {
|
|
/*
|
|
* It worked with no retries. First ignore bogus (small)
|
|
* rssi_ack values.
|
|
*/
|
|
if (tx_rate == ath_rc_priv->rate_max_phy &&
|
|
ath_rc_priv->hw_maxretry_pktcnt < 255) {
|
|
ath_rc_priv->hw_maxretry_pktcnt++;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
return state_change;
|
|
}
|
|
|
|
/* Update PER, RSSI and whatever else that the code thinks it is doing.
|
|
If you can make sense of all this, you really need to go out more. */
|
|
|
|
static void ath_rc_update_ht(struct ath_softc *sc,
|
|
struct ath_rate_priv *ath_rc_priv,
|
|
struct ath_tx_info_priv *tx_info_priv,
|
|
int tx_rate, int xretries, int retries)
|
|
{
|
|
u32 now_msec = jiffies_to_msecs(jiffies);
|
|
int rate;
|
|
u8 last_per;
|
|
bool state_change = false;
|
|
const struct ath_rate_table *rate_table = sc->cur_rate_table;
|
|
int size = ath_rc_priv->rate_table_size;
|
|
|
|
if ((tx_rate < 0) || (tx_rate > rate_table->rate_cnt))
|
|
return;
|
|
|
|
last_per = ath_rc_priv->per[tx_rate];
|
|
|
|
/* Update PER first */
|
|
state_change = ath_rc_update_per(sc, rate_table, ath_rc_priv,
|
|
tx_info_priv, tx_rate, xretries,
|
|
retries, now_msec);
|
|
|
|
/*
|
|
* If this rate looks bad (high PER) then stop using it for
|
|
* a while (except if we are probing).
|
|
*/
|
|
if (ath_rc_priv->per[tx_rate] >= 55 && tx_rate > 0 &&
|
|
rate_table->info[tx_rate].ratekbps <=
|
|
rate_table->info[ath_rc_priv->rate_max_phy].ratekbps) {
|
|
ath_rc_get_lower_rix(rate_table, ath_rc_priv,
|
|
(u8)tx_rate, &ath_rc_priv->rate_max_phy);
|
|
|
|
/* Don't probe for a little while. */
|
|
ath_rc_priv->probe_time = now_msec;
|
|
}
|
|
|
|
/* Make sure the rates below this have lower PER */
|
|
/* Monotonicity is kept only for rates below the current rate. */
|
|
if (ath_rc_priv->per[tx_rate] < last_per) {
|
|
for (rate = tx_rate - 1; rate >= 0; rate--) {
|
|
if (rate_table->info[rate].phy !=
|
|
rate_table->info[tx_rate].phy)
|
|
break;
|
|
|
|
if (ath_rc_priv->per[rate] >
|
|
ath_rc_priv->per[rate+1]) {
|
|
ath_rc_priv->per[rate] =
|
|
ath_rc_priv->per[rate+1];
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Maintain monotonicity for rates above the current rate */
|
|
for (rate = tx_rate; rate < size - 1; rate++) {
|
|
if (ath_rc_priv->per[rate+1] <
|
|
ath_rc_priv->per[rate])
|
|
ath_rc_priv->per[rate+1] =
|
|
ath_rc_priv->per[rate];
|
|
}
|
|
|
|
/* Every so often, we reduce the thresholds
|
|
* and PER (different for CCK and OFDM). */
|
|
if (now_msec - ath_rc_priv->per_down_time >=
|
|
rate_table->probe_interval) {
|
|
for (rate = 0; rate < size; rate++) {
|
|
ath_rc_priv->per[rate] =
|
|
7 * ath_rc_priv->per[rate] / 8;
|
|
}
|
|
|
|
ath_rc_priv->per_down_time = now_msec;
|
|
}
|
|
|
|
ath_debug_stat_retries(sc, tx_rate, xretries, retries,
|
|
ath_rc_priv->per[tx_rate]);
|
|
|
|
}
|
|
|
|
static int ath_rc_get_rateindex(const struct ath_rate_table *rate_table,
|
|
struct ieee80211_tx_rate *rate)
|
|
{
|
|
int rix;
|
|
|
|
if ((rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) &&
|
|
(rate->flags & IEEE80211_TX_RC_SHORT_GI))
|
|
rix = rate_table->info[rate->idx].ht_index;
|
|
else if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
|
|
rix = rate_table->info[rate->idx].sgi_index;
|
|
else if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
|
|
rix = rate_table->info[rate->idx].cw40index;
|
|
else
|
|
rix = rate_table->info[rate->idx].base_index;
|
|
|
|
return rix;
|
|
}
|
|
|
|
static void ath_rc_tx_status(struct ath_softc *sc,
|
|
struct ath_rate_priv *ath_rc_priv,
|
|
struct ieee80211_tx_info *tx_info,
|
|
int final_ts_idx, int xretries, int long_retry)
|
|
{
|
|
struct ath_tx_info_priv *tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
|
|
const struct ath_rate_table *rate_table;
|
|
struct ieee80211_tx_rate *rates = tx_info->status.rates;
|
|
u8 flags;
|
|
u32 i = 0, rix;
|
|
|
|
rate_table = sc->cur_rate_table;
|
|
|
|
/*
|
|
* If the first rate is not the final index, there
|
|
* are intermediate rate failures to be processed.
|
|
*/
|
|
if (final_ts_idx != 0) {
|
|
/* Process intermediate rates that failed.*/
|
|
for (i = 0; i < final_ts_idx ; i++) {
|
|
if (rates[i].count != 0 && (rates[i].idx >= 0)) {
|
|
flags = rates[i].flags;
|
|
|
|
/* If HT40 and we have switched mode from
|
|
* 40 to 20 => don't update */
|
|
|
|
if ((flags & IEEE80211_TX_RC_40_MHZ_WIDTH) &&
|
|
!(ath_rc_priv->ht_cap & WLAN_RC_40_FLAG))
|
|
return;
|
|
|
|
rix = ath_rc_get_rateindex(rate_table, &rates[i]);
|
|
ath_rc_update_ht(sc, ath_rc_priv,
|
|
tx_info_priv, rix,
|
|
xretries ? 1 : 2,
|
|
rates[i].count);
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* Handle the special case of MIMO PS burst, where the second
|
|
* aggregate is sent out with only one rate and one try.
|
|
* Treating it as an excessive retry penalizes the rate
|
|
* inordinately.
|
|
*/
|
|
if (rates[0].count == 1 && xretries == 1)
|
|
xretries = 2;
|
|
}
|
|
|
|
flags = rates[i].flags;
|
|
|
|
/* If HT40 and we have switched mode from 40 to 20 => don't update */
|
|
if ((flags & IEEE80211_TX_RC_40_MHZ_WIDTH) &&
|
|
!(ath_rc_priv->ht_cap & WLAN_RC_40_FLAG))
|
|
return;
|
|
|
|
rix = ath_rc_get_rateindex(rate_table, &rates[i]);
|
|
ath_rc_update_ht(sc, ath_rc_priv, tx_info_priv, rix,
|
|
xretries, long_retry);
|
|
}
|
|
|
|
static const
|
|
struct ath_rate_table *ath_choose_rate_table(struct ath_softc *sc,
|
|
enum ieee80211_band band,
|
|
bool is_ht,
|
|
bool is_cw_40)
|
|
{
|
|
int mode = 0;
|
|
|
|
switch(band) {
|
|
case IEEE80211_BAND_2GHZ:
|
|
mode = ATH9K_MODE_11G;
|
|
if (is_ht)
|
|
mode = ATH9K_MODE_11NG_HT20;
|
|
if (is_cw_40)
|
|
mode = ATH9K_MODE_11NG_HT40PLUS;
|
|
break;
|
|
case IEEE80211_BAND_5GHZ:
|
|
mode = ATH9K_MODE_11A;
|
|
if (is_ht)
|
|
mode = ATH9K_MODE_11NA_HT20;
|
|
if (is_cw_40)
|
|
mode = ATH9K_MODE_11NA_HT40PLUS;
|
|
break;
|
|
default:
|
|
DPRINTF(sc, ATH_DBG_CONFIG, "Invalid band\n");
|
|
return NULL;
|
|
}
|
|
|
|
BUG_ON(mode >= ATH9K_MODE_MAX);
|
|
|
|
DPRINTF(sc, ATH_DBG_CONFIG, "Choosing rate table for mode: %d\n", mode);
|
|
return sc->hw_rate_table[mode];
|
|
}
|
|
|
|
static void ath_rc_init(struct ath_softc *sc,
|
|
struct ath_rate_priv *ath_rc_priv,
|
|
struct ieee80211_supported_band *sband,
|
|
struct ieee80211_sta *sta,
|
|
const struct ath_rate_table *rate_table)
|
|
{
|
|
struct ath_rateset *rateset = &ath_rc_priv->neg_rates;
|
|
u8 *ht_mcs = (u8 *)&ath_rc_priv->neg_ht_rates;
|
|
u8 i, j, k, hi = 0, hthi = 0;
|
|
|
|
if (!rate_table) {
|
|
DPRINTF(sc, ATH_DBG_FATAL, "Rate table not initialized\n");
|
|
return;
|
|
}
|
|
|
|
/* Initial rate table size. Will change depending
|
|
* on the working rate set */
|
|
ath_rc_priv->rate_table_size = RATE_TABLE_SIZE;
|
|
|
|
/* Initialize thresholds according to the global rate table */
|
|
for (i = 0 ; i < ath_rc_priv->rate_table_size; i++) {
|
|
ath_rc_priv->per[i] = 0;
|
|
}
|
|
|
|
/* Determine the valid rates */
|
|
ath_rc_init_valid_txmask(ath_rc_priv);
|
|
|
|
for (i = 0; i < WLAN_RC_PHY_MAX; i++) {
|
|
for (j = 0; j < MAX_TX_RATE_PHY; j++)
|
|
ath_rc_priv->valid_phy_rateidx[i][j] = 0;
|
|
ath_rc_priv->valid_phy_ratecnt[i] = 0;
|
|
}
|
|
|
|
if (!rateset->rs_nrates) {
|
|
/* No working rate, just initialize valid rates */
|
|
hi = ath_rc_init_validrates(ath_rc_priv, rate_table,
|
|
ath_rc_priv->ht_cap);
|
|
} else {
|
|
/* Use intersection of working rates and valid rates */
|
|
hi = ath_rc_setvalid_rates(ath_rc_priv, rate_table,
|
|
rateset, ath_rc_priv->ht_cap);
|
|
if (ath_rc_priv->ht_cap & WLAN_RC_HT_FLAG) {
|
|
hthi = ath_rc_setvalid_htrates(ath_rc_priv,
|
|
rate_table,
|
|
ht_mcs,
|
|
ath_rc_priv->ht_cap);
|
|
}
|
|
hi = A_MAX(hi, hthi);
|
|
}
|
|
|
|
ath_rc_priv->rate_table_size = hi + 1;
|
|
ath_rc_priv->rate_max_phy = 0;
|
|
ASSERT(ath_rc_priv->rate_table_size <= RATE_TABLE_SIZE);
|
|
|
|
for (i = 0, k = 0; i < WLAN_RC_PHY_MAX; i++) {
|
|
for (j = 0; j < ath_rc_priv->valid_phy_ratecnt[i]; j++) {
|
|
ath_rc_priv->valid_rate_index[k++] =
|
|
ath_rc_priv->valid_phy_rateidx[i][j];
|
|
}
|
|
|
|
if (!ath_rc_valid_phyrate(i, rate_table->initial_ratemax, 1)
|
|
|| !ath_rc_priv->valid_phy_ratecnt[i])
|
|
continue;
|
|
|
|
ath_rc_priv->rate_max_phy = ath_rc_priv->valid_phy_rateidx[i][j-1];
|
|
}
|
|
ASSERT(ath_rc_priv->rate_table_size <= RATE_TABLE_SIZE);
|
|
ASSERT(k <= RATE_TABLE_SIZE);
|
|
|
|
ath_rc_priv->max_valid_rate = k;
|
|
ath_rc_sort_validrates(rate_table, ath_rc_priv);
|
|
ath_rc_priv->rate_max_phy = ath_rc_priv->valid_rate_index[k-4];
|
|
sc->cur_rate_table = rate_table;
|
|
|
|
DPRINTF(sc, ATH_DBG_CONFIG, "RC Initialized with capabilities: 0x%x\n",
|
|
ath_rc_priv->ht_cap);
|
|
}
|
|
|
|
static u8 ath_rc_build_ht_caps(struct ath_softc *sc, struct ieee80211_sta *sta,
|
|
bool is_cw40, bool is_sgi40)
|
|
{
|
|
u8 caps = 0;
|
|
|
|
if (sta->ht_cap.ht_supported) {
|
|
caps = WLAN_RC_HT_FLAG;
|
|
if (sc->sc_ah->caps.tx_chainmask != 1 &&
|
|
ath9k_hw_getcapability(sc->sc_ah, ATH9K_CAP_DS, 0, NULL)) {
|
|
if (sta->ht_cap.mcs.rx_mask[1])
|
|
caps |= WLAN_RC_DS_FLAG;
|
|
}
|
|
if (is_cw40)
|
|
caps |= WLAN_RC_40_FLAG;
|
|
if (is_sgi40)
|
|
caps |= WLAN_RC_SGI_FLAG;
|
|
}
|
|
|
|
return caps;
|
|
}
|
|
|
|
/***********************************/
|
|
/* mac80211 Rate Control callbacks */
|
|
/***********************************/
|
|
|
|
static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
|
|
struct ieee80211_sta *sta, void *priv_sta,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct ath_softc *sc = priv;
|
|
struct ath_rate_priv *ath_rc_priv = priv_sta;
|
|
struct ath_tx_info_priv *tx_info_priv = NULL;
|
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
|
|
struct ieee80211_hdr *hdr;
|
|
int final_ts_idx, tx_status = 0, is_underrun = 0;
|
|
__le16 fc;
|
|
|
|
hdr = (struct ieee80211_hdr *)skb->data;
|
|
fc = hdr->frame_control;
|
|
tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
|
|
final_ts_idx = tx_info_priv->tx.ts_rateindex;
|
|
|
|
if (!priv_sta || !ieee80211_is_data(fc) ||
|
|
!tx_info_priv->update_rc)
|
|
goto exit;
|
|
|
|
if (tx_info_priv->tx.ts_status & ATH9K_TXERR_FILT)
|
|
goto exit;
|
|
|
|
/*
|
|
* If underrun error is seen assume it as an excessive retry only
|
|
* if prefetch trigger level have reached the max (0x3f for 5416)
|
|
* Adjust the long retry as if the frame was tried hw->max_rate_tries
|
|
* times. This affects how ratectrl updates PER for the failed rate.
|
|
*/
|
|
if (tx_info_priv->tx.ts_flags &
|
|
(ATH9K_TX_DATA_UNDERRUN | ATH9K_TX_DELIM_UNDERRUN) &&
|
|
((sc->sc_ah->tx_trig_level) >= ath_rc_priv->tx_triglevel_max)) {
|
|
tx_status = 1;
|
|
is_underrun = 1;
|
|
}
|
|
|
|
if ((tx_info_priv->tx.ts_status & ATH9K_TXERR_XRETRY) ||
|
|
(tx_info_priv->tx.ts_status & ATH9K_TXERR_FIFO))
|
|
tx_status = 1;
|
|
|
|
ath_rc_tx_status(sc, ath_rc_priv, tx_info, final_ts_idx, tx_status,
|
|
(is_underrun) ? sc->hw->max_rate_tries :
|
|
tx_info_priv->tx.ts_longretry);
|
|
|
|
/* Check if aggregation has to be enabled for this tid */
|
|
if (conf_is_ht(&sc->hw->conf) &&
|
|
!(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
|
|
if (ieee80211_is_data_qos(fc)) {
|
|
u8 *qc, tid;
|
|
struct ath_node *an;
|
|
|
|
qc = ieee80211_get_qos_ctl(hdr);
|
|
tid = qc[0] & 0xf;
|
|
an = (struct ath_node *)sta->drv_priv;
|
|
|
|
if(ath_tx_aggr_check(sc, an, tid))
|
|
ieee80211_start_tx_ba_session(sc->hw, hdr->addr1, tid);
|
|
}
|
|
}
|
|
|
|
ath_debug_stat_rc(sc, skb);
|
|
exit:
|
|
kfree(tx_info_priv);
|
|
}
|
|
|
|
static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband,
|
|
struct ieee80211_sta *sta, void *priv_sta)
|
|
{
|
|
struct ath_softc *sc = priv;
|
|
struct ath_rate_priv *ath_rc_priv = priv_sta;
|
|
const struct ath_rate_table *rate_table = NULL;
|
|
bool is_cw40, is_sgi40;
|
|
int i, j = 0;
|
|
|
|
for (i = 0; i < sband->n_bitrates; i++) {
|
|
if (sta->supp_rates[sband->band] & BIT(i)) {
|
|
ath_rc_priv->neg_rates.rs_rates[j]
|
|
= (sband->bitrates[i].bitrate * 2) / 10;
|
|
j++;
|
|
}
|
|
}
|
|
ath_rc_priv->neg_rates.rs_nrates = j;
|
|
|
|
if (sta->ht_cap.ht_supported) {
|
|
for (i = 0, j = 0; i < 77; i++) {
|
|
if (sta->ht_cap.mcs.rx_mask[i/8] & (1<<(i%8)))
|
|
ath_rc_priv->neg_ht_rates.rs_rates[j++] = i;
|
|
if (j == ATH_RATE_MAX)
|
|
break;
|
|
}
|
|
ath_rc_priv->neg_ht_rates.rs_nrates = j;
|
|
}
|
|
|
|
is_cw40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40;
|
|
is_sgi40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
|
|
|
|
/* Choose rate table first */
|
|
|
|
if ((sc->sc_ah->opmode == NL80211_IFTYPE_STATION) ||
|
|
(sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT) ||
|
|
(sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC)) {
|
|
rate_table = ath_choose_rate_table(sc, sband->band,
|
|
sta->ht_cap.ht_supported,
|
|
is_cw40);
|
|
} else if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
|
|
/* cur_rate_table would be set on init through config() */
|
|
rate_table = sc->cur_rate_table;
|
|
}
|
|
|
|
ath_rc_priv->ht_cap = ath_rc_build_ht_caps(sc, sta, is_cw40, is_sgi40);
|
|
ath_rc_init(sc, priv_sta, sband, sta, rate_table);
|
|
}
|
|
|
|
static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband,
|
|
struct ieee80211_sta *sta, void *priv_sta,
|
|
u32 changed)
|
|
{
|
|
struct ath_softc *sc = priv;
|
|
struct ath_rate_priv *ath_rc_priv = priv_sta;
|
|
const struct ath_rate_table *rate_table = NULL;
|
|
bool oper_cw40 = false, oper_sgi40;
|
|
bool local_cw40 = (ath_rc_priv->ht_cap & WLAN_RC_40_FLAG) ?
|
|
true : false;
|
|
bool local_sgi40 = (ath_rc_priv->ht_cap & WLAN_RC_SGI_FLAG) ?
|
|
true : false;
|
|
|
|
/* FIXME: Handle AP mode later when we support CWM */
|
|
|
|
if (changed & IEEE80211_RC_HT_CHANGED) {
|
|
if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION)
|
|
return;
|
|
|
|
if (sc->hw->conf.channel_type == NL80211_CHAN_HT40MINUS ||
|
|
sc->hw->conf.channel_type == NL80211_CHAN_HT40PLUS)
|
|
oper_cw40 = true;
|
|
|
|
oper_sgi40 = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ?
|
|
true : false;
|
|
|
|
if ((local_cw40 != oper_cw40) || (local_sgi40 != oper_sgi40)) {
|
|
rate_table = ath_choose_rate_table(sc, sband->band,
|
|
sta->ht_cap.ht_supported,
|
|
oper_cw40);
|
|
ath_rc_priv->ht_cap = ath_rc_build_ht_caps(sc, sta,
|
|
oper_cw40, oper_sgi40);
|
|
ath_rc_init(sc, priv_sta, sband, sta, rate_table);
|
|
|
|
DPRINTF(sc, ATH_DBG_CONFIG,
|
|
"Operating HT Bandwidth changed to: %d\n",
|
|
sc->hw->conf.channel_type);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void *ath_rate_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
|
|
{
|
|
struct ath_wiphy *aphy = hw->priv;
|
|
return aphy->sc;
|
|
}
|
|
|
|
static void ath_rate_free(void *priv)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static void *ath_rate_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
|
|
{
|
|
struct ath_softc *sc = priv;
|
|
struct ath_rate_priv *rate_priv;
|
|
|
|
rate_priv = kzalloc(sizeof(struct ath_rate_priv), gfp);
|
|
if (!rate_priv) {
|
|
DPRINTF(sc, ATH_DBG_FATAL,
|
|
"Unable to allocate private rc structure\n");
|
|
return NULL;
|
|
}
|
|
|
|
rate_priv->tx_triglevel_max = sc->sc_ah->caps.tx_triglevel_max;
|
|
|
|
return rate_priv;
|
|
}
|
|
|
|
static void ath_rate_free_sta(void *priv, struct ieee80211_sta *sta,
|
|
void *priv_sta)
|
|
{
|
|
struct ath_rate_priv *rate_priv = priv_sta;
|
|
kfree(rate_priv);
|
|
}
|
|
|
|
static struct rate_control_ops ath_rate_ops = {
|
|
.module = NULL,
|
|
.name = "ath9k_rate_control",
|
|
.tx_status = ath_tx_status,
|
|
.get_rate = ath_get_rate,
|
|
.rate_init = ath_rate_init,
|
|
.rate_update = ath_rate_update,
|
|
.alloc = ath_rate_alloc,
|
|
.free = ath_rate_free,
|
|
.alloc_sta = ath_rate_alloc_sta,
|
|
.free_sta = ath_rate_free_sta,
|
|
};
|
|
|
|
void ath_rate_attach(struct ath_softc *sc)
|
|
{
|
|
sc->hw_rate_table[ATH9K_MODE_11A] =
|
|
&ar5416_11a_ratetable;
|
|
sc->hw_rate_table[ATH9K_MODE_11G] =
|
|
&ar5416_11g_ratetable;
|
|
sc->hw_rate_table[ATH9K_MODE_11NA_HT20] =
|
|
&ar5416_11na_ratetable;
|
|
sc->hw_rate_table[ATH9K_MODE_11NG_HT20] =
|
|
&ar5416_11ng_ratetable;
|
|
sc->hw_rate_table[ATH9K_MODE_11NA_HT40PLUS] =
|
|
&ar5416_11na_ratetable;
|
|
sc->hw_rate_table[ATH9K_MODE_11NA_HT40MINUS] =
|
|
&ar5416_11na_ratetable;
|
|
sc->hw_rate_table[ATH9K_MODE_11NG_HT40PLUS] =
|
|
&ar5416_11ng_ratetable;
|
|
sc->hw_rate_table[ATH9K_MODE_11NG_HT40MINUS] =
|
|
&ar5416_11ng_ratetable;
|
|
}
|
|
|
|
int ath_rate_control_register(void)
|
|
{
|
|
return ieee80211_rate_control_register(&ath_rate_ops);
|
|
}
|
|
|
|
void ath_rate_control_unregister(void)
|
|
{
|
|
ieee80211_rate_control_unregister(&ath_rate_ops);
|
|
}
|