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Commit | Line | Data |
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f078f209 LR |
1 | /* |
2 | * Copyright (c) 2004 Video54 Technologies, Inc. | |
cee075a2 | 3 | * Copyright (c) 2004-2009 Atheros Communications, Inc. |
f078f209 LR |
4 | * |
5 | * Permission to use, copy, modify, and/or distribute this software for any | |
6 | * purpose with or without fee is hereby granted, provided that the above | |
7 | * copyright notice and this permission notice appear in all copies. | |
8 | * | |
9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
16 | */ | |
17 | ||
5a0e3ad6 TH |
18 | #include <linux/slab.h> |
19 | ||
394cf0a1 | 20 | #include "ath9k.h" |
f078f209 | 21 | |
4f0fc7c3 | 22 | static const struct ath_rate_table ar5416_11na_ratetable = { |
1d9d06a2 | 23 | 68, |
545750d3 | 24 | 8, /* MCS start */ |
f078f209 | 25 | { |
1d9d06a2 | 26 | [0] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 6000, |
aaa41ec4 | 27 | 5400, 0, 12, 0, 0, 0, 0 }, /* 6 Mb */ |
1d9d06a2 | 28 | [1] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 9000, |
aaa41ec4 | 29 | 7800, 1, 18, 0, 1, 1, 1 }, /* 9 Mb */ |
1d9d06a2 | 30 | [2] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 12000, |
aaa41ec4 | 31 | 10000, 2, 24, 2, 2, 2, 2 }, /* 12 Mb */ |
1d9d06a2 | 32 | [3] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 18000, |
aaa41ec4 | 33 | 13900, 3, 36, 2, 3, 3, 3 }, /* 18 Mb */ |
1d9d06a2 | 34 | [4] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 24000, |
aaa41ec4 | 35 | 17300, 4, 48, 4, 4, 4, 4 }, /* 24 Mb */ |
1d9d06a2 | 36 | [5] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 36000, |
aaa41ec4 | 37 | 23000, 5, 72, 4, 5, 5, 5 }, /* 36 Mb */ |
1d9d06a2 | 38 | [6] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 48000, |
aaa41ec4 | 39 | 27400, 6, 96, 4, 6, 6, 6 }, /* 48 Mb */ |
1d9d06a2 | 40 | [7] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 54000, |
aaa41ec4 | 41 | 29300, 7, 108, 4, 7, 7, 7 }, /* 54 Mb */ |
1d9d06a2 | 42 | [8] = { RC_HT_SDT_2040, WLAN_RC_PHY_HT_20_SS, 6500, |
aaa41ec4 | 43 | 6400, 0, 0, 0, 38, 8, 38 }, /* 6.5 Mb */ |
1d9d06a2 | 44 | [9] = { RC_HT_SDT_20, WLAN_RC_PHY_HT_20_SS, 13000, |
aaa41ec4 | 45 | 12700, 1, 1, 2, 39, 9, 39 }, /* 13 Mb */ |
1d9d06a2 | 46 | [10] = { RC_HT_SDT_20, WLAN_RC_PHY_HT_20_SS, 19500, |
aaa41ec4 | 47 | 18800, 2, 2, 2, 40, 10, 40 }, /* 19.5 Mb */ |
1d9d06a2 | 48 | [11] = { RC_HT_SD_20, WLAN_RC_PHY_HT_20_SS, 26000, |
aaa41ec4 | 49 | 25000, 3, 3, 4, 41, 11, 41 }, /* 26 Mb */ |
1d9d06a2 | 50 | [12] = { RC_HT_SD_20, WLAN_RC_PHY_HT_20_SS, 39000, |
aaa41ec4 | 51 | 36700, 4, 4, 4, 42, 12, 42 }, /* 39 Mb */ |
1d9d06a2 | 52 | [13] = { RC_HT_S_20, WLAN_RC_PHY_HT_20_SS, 52000, |
aaa41ec4 | 53 | 48100, 5, 5, 4, 43, 13, 43 }, /* 52 Mb */ |
1d9d06a2 | 54 | [14] = { RC_HT_S_20, WLAN_RC_PHY_HT_20_SS, 58500, |
aaa41ec4 | 55 | 53500, 6, 6, 4, 44, 14, 44 }, /* 58.5 Mb */ |
1d9d06a2 | 56 | [15] = { RC_HT_S_20, WLAN_RC_PHY_HT_20_SS, 65000, |
aaa41ec4 | 57 | 59000, 7, 7, 4, 45, 16, 46 }, /* 65 Mb */ |
1d9d06a2 | 58 | [16] = { RC_HT_S_20, WLAN_RC_PHY_HT_20_SS_HGI, 72200, |
aaa41ec4 | 59 | 65400, 7, 7, 4, 45, 16, 46 }, /* 75 Mb */ |
1d9d06a2 | 60 | [17] = { RC_INVALID, WLAN_RC_PHY_HT_20_DS, 13000, |
aaa41ec4 | 61 | 12700, 8, 8, 0, 47, 17, 47 }, /* 13 Mb */ |
1d9d06a2 | 62 | [18] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_DS, 26000, |
aaa41ec4 | 63 | 24800, 9, 9, 2, 48, 18, 48 }, /* 26 Mb */ |
1d9d06a2 | 64 | [19] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_DS, 39000, |
aaa41ec4 | 65 | 36600, 10, 10, 2, 49, 19, 49 }, /* 39 Mb */ |
1d9d06a2 | 66 | [20] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS, 52000, |
aaa41ec4 | 67 | 48100, 11, 11, 4, 50, 20, 50 }, /* 52 Mb */ |
1d9d06a2 | 68 | [21] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS, 78000, |
aaa41ec4 | 69 | 69500, 12, 12, 4, 51, 21, 51 }, /* 78 Mb */ |
1d9d06a2 | 70 | [22] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS, 104000, |
aaa41ec4 | 71 | 89500, 13, 13, 4, 52, 22, 52 }, /* 104 Mb */ |
1d9d06a2 | 72 | [23] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS, 117000, |
aaa41ec4 | 73 | 98900, 14, 14, 4, 53, 23, 53 }, /* 117 Mb */ |
1d9d06a2 | 74 | [24] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS, 130000, |
aaa41ec4 | 75 | 108300, 15, 15, 4, 54, 25, 55 }, /* 130 Mb */ |
1d9d06a2 | 76 | [25] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS_HGI, 144400, |
aaa41ec4 | 77 | 120000, 15, 15, 4, 54, 25, 55 }, /* 144.4 Mb */ |
1d9d06a2 | 78 | [26] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 19500, |
aaa41ec4 | 79 | 17400, 16, 16, 0, 56, 26, 56 }, /* 19.5 Mb */ |
1d9d06a2 | 80 | [27] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 39000, |
aaa41ec4 | 81 | 35100, 17, 17, 2, 57, 27, 57 }, /* 39 Mb */ |
1d9d06a2 | 82 | [28] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 58500, |
aaa41ec4 | 83 | 52600, 18, 18, 2, 58, 28, 58 }, /* 58.5 Mb */ |
1d9d06a2 | 84 | [29] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 78000, |
aaa41ec4 | 85 | 70400, 19, 19, 4, 59, 29, 59 }, /* 78 Mb */ |
1d9d06a2 | 86 | [30] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 117000, |
aaa41ec4 | 87 | 104900, 20, 20, 4, 60, 31, 61 }, /* 117 Mb */ |
1d9d06a2 | 88 | [31] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS_HGI, 130000, |
aaa41ec4 | 89 | 115800, 20, 20, 4, 60, 31, 61 }, /* 130 Mb*/ |
1d9d06a2 | 90 | [32] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS, 156000, |
aaa41ec4 | 91 | 137200, 21, 21, 4, 62, 33, 63 }, /* 156 Mb */ |
1d9d06a2 | 92 | [33] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS_HGI, 173300, |
aaa41ec4 | 93 | 151100, 21, 21, 4, 62, 33, 63 }, /* 173.3 Mb */ |
1d9d06a2 | 94 | [34] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS, 175500, |
aaa41ec4 | 95 | 152800, 22, 22, 4, 64, 35, 65 }, /* 175.5 Mb */ |
1d9d06a2 | 96 | [35] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS_HGI, 195000, |
aaa41ec4 | 97 | 168400, 22, 22, 4, 64, 35, 65 }, /* 195 Mb*/ |
1d9d06a2 | 98 | [36] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS, 195000, |
aaa41ec4 | 99 | 168400, 23, 23, 4, 66, 37, 67 }, /* 195 Mb */ |
1d9d06a2 | 100 | [37] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS_HGI, 216700, |
aaa41ec4 | 101 | 185000, 23, 23, 4, 66, 37, 67 }, /* 216.7 Mb */ |
1d9d06a2 | 102 | [38] = { RC_HT_SDT_40, WLAN_RC_PHY_HT_40_SS, 13500, |
aaa41ec4 | 103 | 13200, 0, 0, 0, 38, 38, 38 }, /* 13.5 Mb*/ |
1d9d06a2 | 104 | [39] = { RC_HT_SDT_40, WLAN_RC_PHY_HT_40_SS, 27500, |
aaa41ec4 | 105 | 25900, 1, 1, 2, 39, 39, 39 }, /* 27.0 Mb*/ |
1d9d06a2 | 106 | [40] = { RC_HT_SDT_40, WLAN_RC_PHY_HT_40_SS, 40500, |
aaa41ec4 | 107 | 38600, 2, 2, 2, 40, 40, 40 }, /* 40.5 Mb*/ |
1d9d06a2 | 108 | [41] = { RC_HT_SD_40, WLAN_RC_PHY_HT_40_SS, 54000, |
aaa41ec4 | 109 | 49800, 3, 3, 4, 41, 41, 41 }, /* 54 Mb */ |
1d9d06a2 | 110 | [42] = { RC_HT_SD_40, WLAN_RC_PHY_HT_40_SS, 81500, |
aaa41ec4 | 111 | 72200, 4, 4, 4, 42, 42, 42 }, /* 81 Mb */ |
1d9d06a2 | 112 | [43] = { RC_HT_S_40, WLAN_RC_PHY_HT_40_SS, 108000, |
aaa41ec4 | 113 | 92900, 5, 5, 4, 43, 43, 43 }, /* 108 Mb */ |
1d9d06a2 | 114 | [44] = { RC_HT_S_40, WLAN_RC_PHY_HT_40_SS, 121500, |
aaa41ec4 | 115 | 102700, 6, 6, 4, 44, 44, 44 }, /* 121.5 Mb*/ |
1d9d06a2 | 116 | [45] = { RC_HT_S_40, WLAN_RC_PHY_HT_40_SS, 135000, |
aaa41ec4 | 117 | 112000, 7, 7, 4, 45, 46, 46 }, /* 135 Mb */ |
1d9d06a2 | 118 | [46] = { RC_HT_S_40, WLAN_RC_PHY_HT_40_SS_HGI, 150000, |
aaa41ec4 | 119 | 122000, 7, 7, 4, 45, 46, 46 }, /* 150 Mb */ |
1d9d06a2 | 120 | [47] = { RC_INVALID, WLAN_RC_PHY_HT_40_DS, 27000, |
aaa41ec4 | 121 | 25800, 8, 8, 0, 47, 47, 47 }, /* 27 Mb */ |
1d9d06a2 | 122 | [48] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_DS, 54000, |
aaa41ec4 | 123 | 49800, 9, 9, 2, 48, 48, 48 }, /* 54 Mb */ |
1d9d06a2 | 124 | [49] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_DS, 81000, |
aaa41ec4 | 125 | 71900, 10, 10, 2, 49, 49, 49 }, /* 81 Mb */ |
1d9d06a2 | 126 | [50] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS, 108000, |
aaa41ec4 | 127 | 92500, 11, 11, 4, 50, 50, 50 }, /* 108 Mb */ |
1d9d06a2 | 128 | [51] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS, 162000, |
aaa41ec4 | 129 | 130300, 12, 12, 4, 51, 51, 51 }, /* 162 Mb */ |
1d9d06a2 | 130 | [52] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS, 216000, |
aaa41ec4 | 131 | 162800, 13, 13, 4, 52, 52, 52 }, /* 216 Mb */ |
1d9d06a2 | 132 | [53] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS, 243000, |
aaa41ec4 | 133 | 178200, 14, 14, 4, 53, 53, 53 }, /* 243 Mb */ |
1d9d06a2 | 134 | [54] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS, 270000, |
aaa41ec4 | 135 | 192100, 15, 15, 4, 54, 55, 55 }, /* 270 Mb */ |
1d9d06a2 | 136 | [55] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS_HGI, 300000, |
aaa41ec4 | 137 | 207000, 15, 15, 4, 54, 55, 55 }, /* 300 Mb */ |
1d9d06a2 | 138 | [56] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS, 40500, |
aaa41ec4 | 139 | 36100, 16, 16, 0, 56, 56, 56 }, /* 40.5 Mb */ |
1d9d06a2 | 140 | [57] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS, 81000, |
aaa41ec4 | 141 | 72900, 17, 17, 2, 57, 57, 57 }, /* 81 Mb */ |
1d9d06a2 | 142 | [58] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS, 121500, |
aaa41ec4 | 143 | 108300, 18, 18, 2, 58, 58, 58 }, /* 121.5 Mb */ |
1d9d06a2 | 144 | [59] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS, 162000, |
aaa41ec4 | 145 | 142000, 19, 19, 4, 59, 59, 59 }, /* 162 Mb */ |
1d9d06a2 | 146 | [60] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS, 243000, |
aaa41ec4 | 147 | 205100, 20, 20, 4, 60, 61, 61 }, /* 243 Mb */ |
1d9d06a2 | 148 | [61] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS_HGI, 270000, |
aaa41ec4 | 149 | 224700, 20, 20, 4, 60, 61, 61 }, /* 270 Mb */ |
1d9d06a2 | 150 | [62] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS, 324000, |
aaa41ec4 | 151 | 263100, 21, 21, 4, 62, 63, 63 }, /* 324 Mb */ |
1d9d06a2 | 152 | [63] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS_HGI, 360000, |
aaa41ec4 | 153 | 288000, 21, 21, 4, 62, 63, 63 }, /* 360 Mb */ |
1d9d06a2 | 154 | [64] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS, 364500, |
aaa41ec4 | 155 | 290700, 22, 22, 4, 64, 65, 65 }, /* 364.5 Mb */ |
1d9d06a2 | 156 | [65] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS_HGI, 405000, |
aaa41ec4 | 157 | 317200, 22, 22, 4, 64, 65, 65 }, /* 405 Mb */ |
1d9d06a2 | 158 | [66] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS, 405000, |
aaa41ec4 | 159 | 317200, 23, 23, 4, 66, 67, 67 }, /* 405 Mb */ |
1d9d06a2 | 160 | [67] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS_HGI, 450000, |
aaa41ec4 | 161 | 346400, 23, 23, 4, 66, 67, 67 }, /* 450 Mb */ |
f078f209 LR |
162 | }, |
163 | 50, /* probe interval */ | |
f078f209 LR |
164 | WLAN_RC_HT_FLAG, /* Phy rates allowed initially */ |
165 | }; | |
166 | ||
f078f209 LR |
167 | /* 4ms frame limit not used for NG mode. The values filled |
168 | * for HT are the 64K max aggregate limit */ | |
169 | ||
4f0fc7c3 | 170 | static const struct ath_rate_table ar5416_11ng_ratetable = { |
1d9d06a2 | 171 | 72, |
545750d3 | 172 | 12, /* MCS start */ |
f078f209 | 173 | { |
1d9d06a2 | 174 | [0] = { RC_ALL, WLAN_RC_PHY_CCK, 1000, |
aaa41ec4 | 175 | 900, 0, 2, 0, 0, 0, 0 }, /* 1 Mb */ |
1d9d06a2 | 176 | [1] = { RC_ALL, WLAN_RC_PHY_CCK, 2000, |
aaa41ec4 | 177 | 1900, 1, 4, 1, 1, 1, 1 }, /* 2 Mb */ |
1d9d06a2 | 178 | [2] = { RC_ALL, WLAN_RC_PHY_CCK, 5500, |
aaa41ec4 | 179 | 4900, 2, 11, 2, 2, 2, 2 }, /* 5.5 Mb */ |
1d9d06a2 | 180 | [3] = { RC_ALL, WLAN_RC_PHY_CCK, 11000, |
aaa41ec4 | 181 | 8100, 3, 22, 3, 3, 3, 3 }, /* 11 Mb */ |
1d9d06a2 | 182 | [4] = { RC_INVALID, WLAN_RC_PHY_OFDM, 6000, |
aaa41ec4 | 183 | 5400, 4, 12, 4, 4, 4, 4 }, /* 6 Mb */ |
1d9d06a2 | 184 | [5] = { RC_INVALID, WLAN_RC_PHY_OFDM, 9000, |
aaa41ec4 | 185 | 7800, 5, 18, 4, 5, 5, 5 }, /* 9 Mb */ |
1d9d06a2 | 186 | [6] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 12000, |
aaa41ec4 | 187 | 10100, 6, 24, 6, 6, 6, 6 }, /* 12 Mb */ |
1d9d06a2 | 188 | [7] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 18000, |
aaa41ec4 | 189 | 14100, 7, 36, 6, 7, 7, 7 }, /* 18 Mb */ |
1d9d06a2 | 190 | [8] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 24000, |
aaa41ec4 | 191 | 17700, 8, 48, 8, 8, 8, 8 }, /* 24 Mb */ |
1d9d06a2 | 192 | [9] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 36000, |
aaa41ec4 | 193 | 23700, 9, 72, 8, 9, 9, 9 }, /* 36 Mb */ |
1d9d06a2 | 194 | [10] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 48000, |
aaa41ec4 | 195 | 27400, 10, 96, 8, 10, 10, 10 }, /* 48 Mb */ |
1d9d06a2 | 196 | [11] = { RC_L_SDT, WLAN_RC_PHY_OFDM, 54000, |
aaa41ec4 | 197 | 30900, 11, 108, 8, 11, 11, 11 }, /* 54 Mb */ |
1d9d06a2 | 198 | [12] = { RC_INVALID, WLAN_RC_PHY_HT_20_SS, 6500, |
aaa41ec4 | 199 | 6400, 0, 0, 4, 42, 12, 42 }, /* 6.5 Mb */ |
1d9d06a2 | 200 | [13] = { RC_HT_SDT_20, WLAN_RC_PHY_HT_20_SS, 13000, |
aaa41ec4 | 201 | 12700, 1, 1, 6, 43, 13, 43 }, /* 13 Mb */ |
1d9d06a2 | 202 | [14] = { RC_HT_SDT_20, WLAN_RC_PHY_HT_20_SS, 19500, |
aaa41ec4 | 203 | 18800, 2, 2, 6, 44, 14, 44 }, /* 19.5 Mb*/ |
1d9d06a2 | 204 | [15] = { RC_HT_SD_20, WLAN_RC_PHY_HT_20_SS, 26000, |
aaa41ec4 | 205 | 25000, 3, 3, 8, 45, 15, 45 }, /* 26 Mb */ |
1d9d06a2 | 206 | [16] = { RC_HT_SD_20, WLAN_RC_PHY_HT_20_SS, 39000, |
aaa41ec4 | 207 | 36700, 4, 4, 8, 46, 16, 46 }, /* 39 Mb */ |
1d9d06a2 | 208 | [17] = { RC_HT_S_20, WLAN_RC_PHY_HT_20_SS, 52000, |
aaa41ec4 | 209 | 48100, 5, 5, 8, 47, 17, 47 }, /* 52 Mb */ |
1d9d06a2 | 210 | [18] = { RC_HT_S_20, WLAN_RC_PHY_HT_20_SS, 58500, |
aaa41ec4 | 211 | 53500, 6, 6, 8, 48, 18, 48 }, /* 58.5 Mb */ |
1d9d06a2 | 212 | [19] = { RC_HT_S_20, WLAN_RC_PHY_HT_20_SS, 65000, |
aaa41ec4 | 213 | 59000, 7, 7, 8, 49, 20, 50 }, /* 65 Mb */ |
1d9d06a2 | 214 | [20] = { RC_HT_S_20, WLAN_RC_PHY_HT_20_SS_HGI, 72200, |
aaa41ec4 | 215 | 65400, 7, 7, 8, 49, 20, 50 }, /* 65 Mb*/ |
1d9d06a2 | 216 | [21] = { RC_INVALID, WLAN_RC_PHY_HT_20_DS, 13000, |
aaa41ec4 | 217 | 12700, 8, 8, 4, 51, 21, 51 }, /* 13 Mb */ |
1d9d06a2 | 218 | [22] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_DS, 26000, |
aaa41ec4 | 219 | 24800, 9, 9, 6, 52, 22, 52 }, /* 26 Mb */ |
1d9d06a2 | 220 | [23] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_DS, 39000, |
aaa41ec4 | 221 | 36600, 10, 10, 6, 53, 23, 53 }, /* 39 Mb */ |
1d9d06a2 | 222 | [24] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS, 52000, |
aaa41ec4 | 223 | 48100, 11, 11, 8, 54, 24, 54 }, /* 52 Mb */ |
1d9d06a2 | 224 | [25] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS, 78000, |
aaa41ec4 | 225 | 69500, 12, 12, 8, 55, 25, 55 }, /* 78 Mb */ |
1d9d06a2 | 226 | [26] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS, 104000, |
aaa41ec4 | 227 | 89500, 13, 13, 8, 56, 26, 56 }, /* 104 Mb */ |
1d9d06a2 | 228 | [27] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS, 117000, |
aaa41ec4 | 229 | 98900, 14, 14, 8, 57, 27, 57 }, /* 117 Mb */ |
1d9d06a2 | 230 | [28] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS, 130000, |
aaa41ec4 | 231 | 108300, 15, 15, 8, 58, 29, 59 }, /* 130 Mb */ |
1d9d06a2 | 232 | [29] = { RC_HT_DT_20, WLAN_RC_PHY_HT_20_DS_HGI, 144400, |
aaa41ec4 | 233 | 120000, 15, 15, 8, 58, 29, 59 }, /* 144.4 Mb */ |
1d9d06a2 | 234 | [30] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 19500, |
aaa41ec4 | 235 | 17400, 16, 16, 4, 60, 30, 60 }, /* 19.5 Mb */ |
1d9d06a2 | 236 | [31] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 39000, |
aaa41ec4 | 237 | 35100, 17, 17, 6, 61, 31, 61 }, /* 39 Mb */ |
1d9d06a2 | 238 | [32] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 58500, |
aaa41ec4 | 239 | 52600, 18, 18, 6, 62, 32, 62 }, /* 58.5 Mb */ |
1d9d06a2 | 240 | [33] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 78000, |
aaa41ec4 | 241 | 70400, 19, 19, 8, 63, 33, 63 }, /* 78 Mb */ |
1d9d06a2 | 242 | [34] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS, 117000, |
aaa41ec4 | 243 | 104900, 20, 20, 8, 64, 35, 65 }, /* 117 Mb */ |
1d9d06a2 | 244 | [35] = { RC_INVALID, WLAN_RC_PHY_HT_20_TS_HGI, 130000, |
aaa41ec4 | 245 | 115800, 20, 20, 8, 64, 35, 65 }, /* 130 Mb */ |
1d9d06a2 | 246 | [36] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS, 156000, |
aaa41ec4 | 247 | 137200, 21, 21, 8, 66, 37, 67 }, /* 156 Mb */ |
1d9d06a2 | 248 | [37] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS_HGI, 173300, |
aaa41ec4 | 249 | 151100, 21, 21, 8, 66, 37, 67 }, /* 173.3 Mb */ |
1d9d06a2 | 250 | [38] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS, 175500, |
aaa41ec4 | 251 | 152800, 22, 22, 8, 68, 39, 69 }, /* 175.5 Mb */ |
1d9d06a2 | 252 | [39] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS_HGI, 195000, |
aaa41ec4 | 253 | 168400, 22, 22, 8, 68, 39, 69 }, /* 195 Mb */ |
1d9d06a2 | 254 | [40] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS, 195000, |
aaa41ec4 | 255 | 168400, 23, 23, 8, 70, 41, 71 }, /* 195 Mb */ |
1d9d06a2 | 256 | [41] = { RC_HT_T_20, WLAN_RC_PHY_HT_20_TS_HGI, 216700, |
aaa41ec4 | 257 | 185000, 23, 23, 8, 70, 41, 71 }, /* 216.7 Mb */ |
1d9d06a2 | 258 | [42] = { RC_HT_SDT_40, WLAN_RC_PHY_HT_40_SS, 13500, |
aaa41ec4 | 259 | 13200, 0, 0, 8, 42, 42, 42 }, /* 13.5 Mb */ |
1d9d06a2 | 260 | [43] = { RC_HT_SDT_40, WLAN_RC_PHY_HT_40_SS, 27500, |
aaa41ec4 | 261 | 25900, 1, 1, 8, 43, 43, 43 }, /* 27.0 Mb */ |
1d9d06a2 | 262 | [44] = { RC_HT_SDT_40, WLAN_RC_PHY_HT_40_SS, 40500, |
aaa41ec4 | 263 | 38600, 2, 2, 8, 44, 44, 44 }, /* 40.5 Mb */ |
1d9d06a2 | 264 | [45] = { RC_HT_SD_40, WLAN_RC_PHY_HT_40_SS, 54000, |
aaa41ec4 | 265 | 49800, 3, 3, 8, 45, 45, 45 }, /* 54 Mb */ |
1d9d06a2 | 266 | [46] = { RC_HT_SD_40, WLAN_RC_PHY_HT_40_SS, 81500, |
aaa41ec4 | 267 | 72200, 4, 4, 8, 46, 46, 46 }, /* 81 Mb */ |
1d9d06a2 | 268 | [47] = { RC_HT_S_40 , WLAN_RC_PHY_HT_40_SS, 108000, |
aaa41ec4 | 269 | 92900, 5, 5, 8, 47, 47, 47 }, /* 108 Mb */ |
1d9d06a2 | 270 | [48] = { RC_HT_S_40, WLAN_RC_PHY_HT_40_SS, 121500, |
aaa41ec4 | 271 | 102700, 6, 6, 8, 48, 48, 48 }, /* 121.5 Mb */ |
1d9d06a2 | 272 | [49] = { RC_HT_S_40, WLAN_RC_PHY_HT_40_SS, 135000, |
aaa41ec4 | 273 | 112000, 7, 7, 8, 49, 50, 50 }, /* 135 Mb */ |
1d9d06a2 | 274 | [50] = { RC_HT_S_40, WLAN_RC_PHY_HT_40_SS_HGI, 150000, |
aaa41ec4 | 275 | 122000, 7, 7, 8, 49, 50, 50 }, /* 150 Mb */ |
1d9d06a2 | 276 | [51] = { RC_INVALID, WLAN_RC_PHY_HT_40_DS, 27000, |
aaa41ec4 | 277 | 25800, 8, 8, 8, 51, 51, 51 }, /* 27 Mb */ |
1d9d06a2 | 278 | [52] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_DS, 54000, |
aaa41ec4 | 279 | 49800, 9, 9, 8, 52, 52, 52 }, /* 54 Mb */ |
1d9d06a2 | 280 | [53] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_DS, 81000, |
aaa41ec4 | 281 | 71900, 10, 10, 8, 53, 53, 53 }, /* 81 Mb */ |
1d9d06a2 | 282 | [54] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS, 108000, |
aaa41ec4 | 283 | 92500, 11, 11, 8, 54, 54, 54 }, /* 108 Mb */ |
1d9d06a2 | 284 | [55] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS, 162000, |
aaa41ec4 | 285 | 130300, 12, 12, 8, 55, 55, 55 }, /* 162 Mb */ |
1d9d06a2 | 286 | [56] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS, 216000, |
aaa41ec4 | 287 | 162800, 13, 13, 8, 56, 56, 56 }, /* 216 Mb */ |
1d9d06a2 | 288 | [57] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS, 243000, |
aaa41ec4 | 289 | 178200, 14, 14, 8, 57, 57, 57 }, /* 243 Mb */ |
1d9d06a2 | 290 | [58] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS, 270000, |
aaa41ec4 | 291 | 192100, 15, 15, 8, 58, 59, 59 }, /* 270 Mb */ |
1d9d06a2 | 292 | [59] = { RC_HT_DT_40, WLAN_RC_PHY_HT_40_DS_HGI, 300000, |
aaa41ec4 | 293 | 207000, 15, 15, 8, 58, 59, 59 }, /* 300 Mb */ |
1d9d06a2 | 294 | [60] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS, 40500, |
aaa41ec4 | 295 | 36100, 16, 16, 8, 60, 60, 60 }, /* 40.5 Mb */ |
1d9d06a2 | 296 | [61] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS, 81000, |
aaa41ec4 | 297 | 72900, 17, 17, 8, 61, 61, 61 }, /* 81 Mb */ |
1d9d06a2 | 298 | [62] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS, 121500, |
aaa41ec4 | 299 | 108300, 18, 18, 8, 62, 62, 62 }, /* 121.5 Mb */ |
1d9d06a2 | 300 | [63] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS, 162000, |
aaa41ec4 | 301 | 142000, 19, 19, 8, 63, 63, 63 }, /* 162 Mb */ |
1d9d06a2 | 302 | [64] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS, 243000, |
aaa41ec4 | 303 | 205100, 20, 20, 8, 64, 65, 65 }, /* 243 Mb */ |
1d9d06a2 | 304 | [65] = { RC_INVALID, WLAN_RC_PHY_HT_40_TS_HGI, 270000, |
7a826652 | 305 | 224700, 20, 20, 8, 64, 65, 65 }, /* 270 Mb */ |
1d9d06a2 | 306 | [66] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS, 324000, |
aaa41ec4 | 307 | 263100, 21, 21, 8, 66, 67, 67 }, /* 324 Mb */ |
1d9d06a2 | 308 | [67] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS_HGI, 360000, |
aaa41ec4 | 309 | 288000, 21, 21, 8, 66, 67, 67 }, /* 360 Mb */ |
1d9d06a2 | 310 | [68] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS, 364500, |
aaa41ec4 | 311 | 290700, 22, 22, 8, 68, 69, 69 }, /* 364.5 Mb */ |
1d9d06a2 | 312 | [69] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS_HGI, 405000, |
aaa41ec4 | 313 | 317200, 22, 22, 8, 68, 69, 69 }, /* 405 Mb */ |
1d9d06a2 | 314 | [70] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS, 405000, |
aaa41ec4 | 315 | 317200, 23, 23, 8, 70, 71, 71 }, /* 405 Mb */ |
1d9d06a2 | 316 | [71] = { RC_HT_T_40, WLAN_RC_PHY_HT_40_TS_HGI, 450000, |
aaa41ec4 | 317 | 346400, 23, 23, 8, 70, 71, 71 }, /* 450 Mb */ |
1fe8234a | 318 | }, |
f078f209 | 319 | 50, /* probe interval */ |
f078f209 LR |
320 | WLAN_RC_HT_FLAG, /* Phy rates allowed initially */ |
321 | }; | |
322 | ||
4f0fc7c3 | 323 | static const struct ath_rate_table ar5416_11a_ratetable = { |
f078f209 | 324 | 8, |
545750d3 | 325 | 0, |
f078f209 | 326 | { |
1d9d06a2 | 327 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */ |
aaa41ec4 | 328 | 5400, 0, 12, 0}, |
1d9d06a2 | 329 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */ |
aaa41ec4 | 330 | 7800, 1, 18, 0}, |
1d9d06a2 | 331 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */ |
aaa41ec4 | 332 | 10000, 2, 24, 2}, |
1d9d06a2 | 333 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */ |
aaa41ec4 | 334 | 13900, 3, 36, 2}, |
1d9d06a2 | 335 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */ |
aaa41ec4 | 336 | 17300, 4, 48, 4}, |
1d9d06a2 | 337 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */ |
aaa41ec4 | 338 | 23000, 5, 72, 4}, |
1d9d06a2 | 339 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */ |
aaa41ec4 | 340 | 27400, 6, 96, 4}, |
1d9d06a2 | 341 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */ |
aaa41ec4 | 342 | 29300, 7, 108, 4}, |
f078f209 LR |
343 | }, |
344 | 50, /* probe interval */ | |
f078f209 LR |
345 | 0, /* Phy rates allowed initially */ |
346 | }; | |
347 | ||
4f0fc7c3 | 348 | static const struct ath_rate_table ar5416_11g_ratetable = { |
f078f209 | 349 | 12, |
545750d3 | 350 | 0, |
f078f209 | 351 | { |
1d9d06a2 | 352 | { RC_L_SDT, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */ |
aaa41ec4 | 353 | 900, 0, 2, 0}, |
1d9d06a2 | 354 | { RC_L_SDT, WLAN_RC_PHY_CCK, 2000, /* 2 Mb */ |
aaa41ec4 | 355 | 1900, 1, 4, 1}, |
1d9d06a2 | 356 | { RC_L_SDT, WLAN_RC_PHY_CCK, 5500, /* 5.5 Mb */ |
aaa41ec4 | 357 | 4900, 2, 11, 2}, |
1d9d06a2 | 358 | { RC_L_SDT, WLAN_RC_PHY_CCK, 11000, /* 11 Mb */ |
aaa41ec4 | 359 | 8100, 3, 22, 3}, |
f63b340d | 360 | { RC_INVALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */ |
aaa41ec4 | 361 | 5400, 4, 12, 4}, |
f63b340d | 362 | { RC_INVALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */ |
aaa41ec4 | 363 | 7800, 5, 18, 4}, |
1d9d06a2 | 364 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */ |
aaa41ec4 | 365 | 10000, 6, 24, 6}, |
1d9d06a2 | 366 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */ |
aaa41ec4 | 367 | 13900, 7, 36, 6}, |
1d9d06a2 | 368 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */ |
aaa41ec4 | 369 | 17300, 8, 48, 8}, |
1d9d06a2 | 370 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */ |
aaa41ec4 | 371 | 23000, 9, 72, 8}, |
1d9d06a2 | 372 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */ |
aaa41ec4 | 373 | 27400, 10, 96, 8}, |
1d9d06a2 | 374 | { RC_L_SDT, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */ |
aaa41ec4 | 375 | 29300, 11, 108, 8}, |
f078f209 LR |
376 | }, |
377 | 50, /* probe interval */ | |
f078f209 LR |
378 | 0, /* Phy rates allowed initially */ |
379 | }; | |
380 | ||
545750d3 FF |
381 | static int ath_rc_get_rateindex(const struct ath_rate_table *rate_table, |
382 | struct ieee80211_tx_rate *rate); | |
383 | ||
4f0fc7c3 | 384 | static void ath_rc_sort_validrates(const struct ath_rate_table *rate_table, |
46d14a58 | 385 | struct ath_rate_priv *ath_rc_priv) |
f078f209 LR |
386 | { |
387 | u8 i, j, idx, idx_next; | |
388 | ||
256b7759 | 389 | for (i = ath_rc_priv->max_valid_rate - 1; i > 0; i--) { |
f078f209 | 390 | for (j = 0; j <= i-1; j++) { |
256b7759 S |
391 | idx = ath_rc_priv->valid_rate_index[j]; |
392 | idx_next = ath_rc_priv->valid_rate_index[j+1]; | |
f078f209 LR |
393 | |
394 | if (rate_table->info[idx].ratekbps > | |
395 | rate_table->info[idx_next].ratekbps) { | |
256b7759 S |
396 | ath_rc_priv->valid_rate_index[j] = idx_next; |
397 | ath_rc_priv->valid_rate_index[j+1] = idx; | |
f078f209 LR |
398 | } |
399 | } | |
400 | } | |
401 | } | |
402 | ||
2ae79d52 | 403 | static void ath_rc_init_valid_rate_idx(struct ath_rate_priv *ath_rc_priv) |
f078f209 LR |
404 | { |
405 | u8 i; | |
406 | ||
256b7759 | 407 | for (i = 0; i < ath_rc_priv->rate_table_size; i++) |
46d14a58 | 408 | ath_rc_priv->valid_rate_index[i] = 0; |
f078f209 LR |
409 | } |
410 | ||
2ae79d52 | 411 | static inline void ath_rc_set_valid_rate_idx(struct ath_rate_priv *ath_rc_priv, |
f078f209 LR |
412 | u8 index, int valid_tx_rate) |
413 | { | |
9680e8a3 | 414 | BUG_ON(index > ath_rc_priv->rate_table_size); |
f63b340d | 415 | ath_rc_priv->valid_rate_index[index] = !!valid_tx_rate; |
f078f209 LR |
416 | } |
417 | ||
4f0fc7c3 LR |
418 | static inline |
419 | int ath_rc_get_nextvalid_txrate(const struct ath_rate_table *rate_table, | |
420 | struct ath_rate_priv *ath_rc_priv, | |
421 | u8 cur_valid_txrate, | |
422 | u8 *next_idx) | |
f078f209 LR |
423 | { |
424 | u8 i; | |
425 | ||
256b7759 S |
426 | for (i = 0; i < ath_rc_priv->max_valid_rate - 1; i++) { |
427 | if (ath_rc_priv->valid_rate_index[i] == cur_valid_txrate) { | |
428 | *next_idx = ath_rc_priv->valid_rate_index[i+1]; | |
46d14a58 | 429 | return 1; |
f078f209 LR |
430 | } |
431 | } | |
432 | ||
433 | /* No more valid rates */ | |
434 | *next_idx = 0; | |
2c5a744d | 435 | |
46d14a58 | 436 | return 0; |
f078f209 LR |
437 | } |
438 | ||
439 | /* Return true only for single stream */ | |
440 | ||
441 | static int ath_rc_valid_phyrate(u32 phy, u32 capflag, int ignore_cw) | |
442 | { | |
b657eade | 443 | if (WLAN_RC_PHY_HT(phy) && !(capflag & WLAN_RC_HT_FLAG)) |
46d14a58 | 444 | return 0; |
f078f209 | 445 | if (WLAN_RC_PHY_DS(phy) && !(capflag & WLAN_RC_DS_FLAG)) |
46d14a58 | 446 | return 0; |
1d9d06a2 SB |
447 | if (WLAN_RC_PHY_TS(phy) && !(capflag & WLAN_RC_TS_FLAG)) |
448 | return 0; | |
f078f209 | 449 | if (WLAN_RC_PHY_SGI(phy) && !(capflag & WLAN_RC_SGI_FLAG)) |
46d14a58 | 450 | return 0; |
f078f209 LR |
451 | if (!ignore_cw && WLAN_RC_PHY_HT(phy)) |
452 | if (WLAN_RC_PHY_40(phy) && !(capflag & WLAN_RC_40_FLAG)) | |
46d14a58 | 453 | return 0; |
46d14a58 | 454 | return 1; |
f078f209 LR |
455 | } |
456 | ||
457 | static inline int | |
39448b0a LR |
458 | ath_rc_get_lower_rix(const struct ath_rate_table *rate_table, |
459 | struct ath_rate_priv *ath_rc_priv, | |
460 | u8 cur_valid_txrate, u8 *next_idx) | |
f078f209 LR |
461 | { |
462 | int8_t i; | |
463 | ||
256b7759 S |
464 | for (i = 1; i < ath_rc_priv->max_valid_rate ; i++) { |
465 | if (ath_rc_priv->valid_rate_index[i] == cur_valid_txrate) { | |
466 | *next_idx = ath_rc_priv->valid_rate_index[i-1]; | |
46d14a58 | 467 | return 1; |
f078f209 LR |
468 | } |
469 | } | |
2c5a744d | 470 | |
46d14a58 | 471 | return 0; |
f078f209 LR |
472 | } |
473 | ||
2c5a744d | 474 | static u8 ath_rc_init_validrates(struct ath_rate_priv *ath_rc_priv, |
4f0fc7c3 | 475 | const struct ath_rate_table *rate_table, |
2c5a744d | 476 | u32 capflag) |
f078f209 | 477 | { |
f078f209 | 478 | u8 i, hi = 0; |
f078f209 | 479 | |
f078f209 | 480 | for (i = 0; i < rate_table->rate_cnt; i++) { |
f63b340d | 481 | if (rate_table->info[i].rate_flags & RC_LEGACY) { |
f078f209 LR |
482 | u32 phy = rate_table->info[i].phy; |
483 | u8 valid_rate_count = 0; | |
484 | ||
46d14a58 | 485 | if (!ath_rc_valid_phyrate(phy, capflag, 0)) |
f078f209 LR |
486 | continue; |
487 | ||
256b7759 | 488 | valid_rate_count = ath_rc_priv->valid_phy_ratecnt[phy]; |
f078f209 | 489 | |
256b7759 S |
490 | ath_rc_priv->valid_phy_rateidx[phy][valid_rate_count] = i; |
491 | ath_rc_priv->valid_phy_ratecnt[phy] += 1; | |
2ae79d52 | 492 | ath_rc_set_valid_rate_idx(ath_rc_priv, i, 1); |
f63b340d | 493 | hi = i; |
f078f209 LR |
494 | } |
495 | } | |
2c5a744d | 496 | |
f078f209 LR |
497 | return hi; |
498 | } | |
499 | ||
2c5a744d | 500 | static u8 ath_rc_setvalid_rates(struct ath_rate_priv *ath_rc_priv, |
4f0fc7c3 | 501 | const struct ath_rate_table *rate_table, |
2c5a744d S |
502 | struct ath_rateset *rateset, |
503 | u32 capflag) | |
f078f209 | 504 | { |
f078f209 | 505 | u8 i, j, hi = 0; |
f078f209 LR |
506 | |
507 | /* Use intersection of working rates and valid rates */ | |
508 | for (i = 0; i < rateset->rs_nrates; i++) { | |
509 | for (j = 0; j < rate_table->rate_cnt; j++) { | |
510 | u32 phy = rate_table->info[j].phy; | |
4fc4fbd1 | 511 | u16 rate_flags = rate_table->info[j].rate_flags; |
2c5a744d S |
512 | u8 rate = rateset->rs_rates[i]; |
513 | u8 dot11rate = rate_table->info[j].dot11rate; | |
f078f209 LR |
514 | |
515 | /* We allow a rate only if its valid and the | |
516 | * capflag matches one of the validity | |
46d14a58 | 517 | * (VALID/VALID_20/VALID_40) flags */ |
f078f209 | 518 | |
545750d3 | 519 | if ((rate == dot11rate) && |
f63b340d SB |
520 | (rate_flags & WLAN_RC_CAP_MODE(capflag)) == |
521 | WLAN_RC_CAP_MODE(capflag) && | |
522 | (rate_flags & WLAN_RC_CAP_STREAM(capflag)) && | |
2c5a744d | 523 | !WLAN_RC_PHY_HT(phy)) { |
f078f209 LR |
524 | u8 valid_rate_count = 0; |
525 | ||
46d14a58 | 526 | if (!ath_rc_valid_phyrate(phy, capflag, 0)) |
f078f209 LR |
527 | continue; |
528 | ||
529 | valid_rate_count = | |
256b7759 | 530 | ath_rc_priv->valid_phy_ratecnt[phy]; |
f078f209 | 531 | |
256b7759 | 532 | ath_rc_priv->valid_phy_rateidx[phy] |
f078f209 | 533 | [valid_rate_count] = j; |
256b7759 | 534 | ath_rc_priv->valid_phy_ratecnt[phy] += 1; |
2ae79d52 | 535 | ath_rc_set_valid_rate_idx(ath_rc_priv, j, 1); |
f078f209 LR |
536 | hi = A_MAX(hi, j); |
537 | } | |
538 | } | |
539 | } | |
2c5a744d | 540 | |
f078f209 LR |
541 | return hi; |
542 | } | |
543 | ||
2c5a744d | 544 | static u8 ath_rc_setvalid_htrates(struct ath_rate_priv *ath_rc_priv, |
4f0fc7c3 | 545 | const struct ath_rate_table *rate_table, |
2c5a744d | 546 | u8 *mcs_set, u32 capflag) |
f078f209 | 547 | { |
2c5a744d S |
548 | struct ath_rateset *rateset = (struct ath_rateset *)mcs_set; |
549 | ||
f078f209 | 550 | u8 i, j, hi = 0; |
f078f209 LR |
551 | |
552 | /* Use intersection of working rates and valid rates */ | |
2c5a744d | 553 | for (i = 0; i < rateset->rs_nrates; i++) { |
f078f209 LR |
554 | for (j = 0; j < rate_table->rate_cnt; j++) { |
555 | u32 phy = rate_table->info[j].phy; | |
f63b340d | 556 | u16 rate_flags = rate_table->info[j].rate_flags; |
2c5a744d S |
557 | u8 rate = rateset->rs_rates[i]; |
558 | u8 dot11rate = rate_table->info[j].dot11rate; | |
f078f209 | 559 | |
545750d3 | 560 | if ((rate != dot11rate) || !WLAN_RC_PHY_HT(phy) || |
f63b340d SB |
561 | !(rate_flags & WLAN_RC_CAP_STREAM(capflag)) || |
562 | !WLAN_RC_PHY_HT_VALID(rate_flags, capflag)) | |
f078f209 LR |
563 | continue; |
564 | ||
46d14a58 | 565 | if (!ath_rc_valid_phyrate(phy, capflag, 0)) |
f078f209 LR |
566 | continue; |
567 | ||
256b7759 S |
568 | ath_rc_priv->valid_phy_rateidx[phy] |
569 | [ath_rc_priv->valid_phy_ratecnt[phy]] = j; | |
570 | ath_rc_priv->valid_phy_ratecnt[phy] += 1; | |
2ae79d52 | 571 | ath_rc_set_valid_rate_idx(ath_rc_priv, j, 1); |
f078f209 LR |
572 | hi = A_MAX(hi, j); |
573 | } | |
574 | } | |
f078f209 | 575 | |
2c5a744d | 576 | return hi; |
f078f209 LR |
577 | } |
578 | ||
201c3b41 LR |
579 | /* Finds the highest rate index we can use */ |
580 | static u8 ath_rc_get_highest_rix(struct ath_softc *sc, | |
581 | struct ath_rate_priv *ath_rc_priv, | |
582 | const struct ath_rate_table *rate_table, | |
583 | int *is_probing) | |
f078f209 | 584 | { |
39a4cafe | 585 | u32 best_thruput, this_thruput, now_msec; |
f078f209 | 586 | u8 rate, next_rate, best_rate, maxindex, minindex; |
39a4cafe | 587 | int8_t index = 0; |
f078f209 LR |
588 | |
589 | now_msec = jiffies_to_msecs(jiffies); | |
39a4cafe | 590 | *is_probing = 0; |
f078f209 | 591 | best_thruput = 0; |
256b7759 | 592 | maxindex = ath_rc_priv->max_valid_rate-1; |
f078f209 LR |
593 | minindex = 0; |
594 | best_rate = minindex; | |
595 | ||
596 | /* | |
597 | * Try the higher rate first. It will reduce memory moving time | |
598 | * if we have very good channel characteristics. | |
599 | */ | |
600 | for (index = maxindex; index >= minindex ; index--) { | |
601 | u8 per_thres; | |
602 | ||
256b7759 S |
603 | rate = ath_rc_priv->valid_rate_index[index]; |
604 | if (rate > ath_rc_priv->rate_max_phy) | |
f078f209 LR |
605 | continue; |
606 | ||
607 | /* | |
608 | * For TCP the average collision rate is around 11%, | |
609 | * so we ignore PERs less than this. This is to | |
610 | * prevent the rate we are currently using (whose | |
611 | * PER might be in the 10-15 range because of TCP | |
612 | * collisions) looking worse than the next lower | |
613 | * rate whose PER has decayed close to 0. If we | |
614 | * used to next lower rate, its PER would grow to | |
615 | * 10-15 and we would be worse off then staying | |
616 | * at the current rate. | |
617 | */ | |
922bac60 | 618 | per_thres = ath_rc_priv->per[rate]; |
f078f209 LR |
619 | if (per_thres < 12) |
620 | per_thres = 12; | |
621 | ||
622 | this_thruput = rate_table->info[rate].user_ratekbps * | |
623 | (100 - per_thres); | |
624 | ||
625 | if (best_thruput <= this_thruput) { | |
626 | best_thruput = this_thruput; | |
627 | best_rate = rate; | |
628 | } | |
629 | } | |
630 | ||
631 | rate = best_rate; | |
f078f209 LR |
632 | |
633 | /* | |
634 | * Must check the actual rate (ratekbps) to account for | |
635 | * non-monoticity of 11g's rate table | |
636 | */ | |
637 | ||
3900898c | 638 | if (rate >= ath_rc_priv->rate_max_phy) { |
256b7759 | 639 | rate = ath_rc_priv->rate_max_phy; |
f078f209 LR |
640 | |
641 | /* Probe the next allowed phy state */ | |
f078f209 | 642 | if (ath_rc_get_nextvalid_txrate(rate_table, |
3900898c | 643 | ath_rc_priv, rate, &next_rate) && |
256b7759 | 644 | (now_msec - ath_rc_priv->probe_time > |
f078f209 | 645 | rate_table->probe_interval) && |
256b7759 | 646 | (ath_rc_priv->hw_maxretry_pktcnt >= 1)) { |
f078f209 | 647 | rate = next_rate; |
256b7759 S |
648 | ath_rc_priv->probe_rate = rate; |
649 | ath_rc_priv->probe_time = now_msec; | |
650 | ath_rc_priv->hw_maxretry_pktcnt = 0; | |
46d14a58 | 651 | *is_probing = 1; |
f078f209 LR |
652 | } |
653 | } | |
654 | ||
256b7759 S |
655 | if (rate > (ath_rc_priv->rate_table_size - 1)) |
656 | rate = ath_rc_priv->rate_table_size - 1; | |
f078f209 | 657 | |
1d9d06a2 SB |
658 | if (RC_TS_ONLY(rate_table->info[rate].rate_flags) && |
659 | (ath_rc_priv->ht_cap & WLAN_RC_TS_FLAG)) | |
660 | return rate; | |
661 | ||
662 | if (RC_DS_OR_LATER(rate_table->info[rate].rate_flags) && | |
663 | (ath_rc_priv->ht_cap & (WLAN_RC_DS_FLAG | WLAN_RC_TS_FLAG))) | |
e43419f9 LR |
664 | return rate; |
665 | ||
f63b340d | 666 | if (RC_SS_OR_LEGACY(rate_table->info[rate].rate_flags)) |
e43419f9 LR |
667 | return rate; |
668 | ||
669 | /* This should not happen */ | |
670 | WARN_ON(1); | |
671 | ||
672 | rate = ath_rc_priv->valid_rate_index[0]; | |
f078f209 LR |
673 | |
674 | return rate; | |
675 | } | |
676 | ||
4f0fc7c3 | 677 | static void ath_rc_rate_set_series(const struct ath_rate_table *rate_table, |
a8efee4f | 678 | struct ieee80211_tx_rate *rate, |
c89424df | 679 | struct ieee80211_tx_rate_control *txrc, |
2c5a744d | 680 | u8 tries, u8 rix, int rtsctsenable) |
f078f209 | 681 | { |
a8efee4f | 682 | rate->count = tries; |
545750d3 | 683 | rate->idx = rate_table->info[rix].ratecode; |
a8efee4f | 684 | |
c89424df S |
685 | if (txrc->short_preamble) |
686 | rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE; | |
687 | if (txrc->rts || rtsctsenable) | |
a8efee4f | 688 | rate->flags |= IEEE80211_TX_RC_USE_RTS_CTS; |
545750d3 FF |
689 | |
690 | if (WLAN_RC_PHY_HT(rate_table->info[rix].phy)) { | |
a8efee4f | 691 | rate->flags |= IEEE80211_TX_RC_MCS; |
545750d3 FF |
692 | if (WLAN_RC_PHY_40(rate_table->info[rix].phy)) |
693 | rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH; | |
694 | if (WLAN_RC_PHY_SGI(rate_table->info[rix].phy)) | |
695 | rate->flags |= IEEE80211_TX_RC_SHORT_GI; | |
696 | } | |
f078f209 LR |
697 | } |
698 | ||
c89424df | 699 | static void ath_rc_rate_set_rtscts(struct ath_softc *sc, |
4f0fc7c3 | 700 | const struct ath_rate_table *rate_table, |
c89424df S |
701 | struct ieee80211_tx_info *tx_info) |
702 | { | |
703 | struct ieee80211_tx_rate *rates = tx_info->control.rates; | |
704 | int i = 0, rix = 0, cix, enable_g_protection = 0; | |
705 | ||
706 | /* get the cix for the lowest valid rix */ | |
707 | for (i = 3; i >= 0; i--) { | |
708 | if (rates[i].count && (rates[i].idx >= 0)) { | |
545750d3 | 709 | rix = ath_rc_get_rateindex(rate_table, &rates[i]); |
c89424df S |
710 | break; |
711 | } | |
712 | } | |
713 | cix = rate_table->info[rix].ctrl_rate; | |
714 | ||
715 | /* All protection frames are transmited at 2Mb/s for 802.11g, | |
716 | * otherwise we transmit them at 1Mb/s */ | |
717 | if (sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ && | |
718 | !conf_is_ht(&sc->hw->conf)) | |
719 | enable_g_protection = 1; | |
720 | ||
721 | /* | |
722 | * If 802.11g protection is enabled, determine whether to use RTS/CTS or | |
723 | * just CTS. Note that this is only done for OFDM/HT unicast frames. | |
724 | */ | |
725 | if ((sc->sc_flags & SC_OP_PROTECT_ENABLE) && | |
c89424df S |
726 | (rate_table->info[rix].phy == WLAN_RC_PHY_OFDM || |
727 | WLAN_RC_PHY_HT(rate_table->info[rix].phy))) { | |
728 | rates[0].flags |= IEEE80211_TX_RC_USE_CTS_PROTECT; | |
729 | cix = rate_table->info[enable_g_protection].ctrl_rate; | |
730 | } | |
731 | ||
732 | tx_info->control.rts_cts_rate_idx = cix; | |
733 | } | |
734 | ||
e25739a1 LR |
735 | static void ath_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta, |
736 | struct ieee80211_tx_rate_control *txrc) | |
f078f209 | 737 | { |
e25739a1 LR |
738 | struct ath_softc *sc = priv; |
739 | struct ath_rate_priv *ath_rc_priv = priv_sta; | |
4f0fc7c3 | 740 | const struct ath_rate_table *rate_table; |
3900898c S |
741 | struct sk_buff *skb = txrc->skb; |
742 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); | |
a8efee4f | 743 | struct ieee80211_tx_rate *rates = tx_info->control.rates; |
c89424df S |
744 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
745 | __le16 fc = hdr->frame_control; | |
5c0ba62f | 746 | u8 try_per_rate, i = 0, rix; |
3900898c | 747 | int is_probe = 0; |
f078f209 | 748 | |
e25739a1 LR |
749 | if (rate_control_send_low(sta, priv_sta, txrc)) |
750 | return; | |
751 | ||
dd190183 LR |
752 | /* |
753 | * For Multi Rate Retry we use a different number of | |
754 | * retry attempt counts. This ends up looking like this: | |
755 | * | |
65896510 FF |
756 | * MRR[0] = 4 |
757 | * MRR[1] = 4 | |
758 | * MRR[2] = 4 | |
759 | * MRR[3] = 8 | |
dd190183 LR |
760 | * |
761 | */ | |
65896510 | 762 | try_per_rate = 4; |
dd190183 | 763 | |
4e990018 | 764 | rate_table = ath_rc_priv->rate_table; |
201c3b41 | 765 | rix = ath_rc_get_highest_rix(sc, ath_rc_priv, rate_table, &is_probe); |
f078f209 | 766 | |
b0a33448 LR |
767 | /* |
768 | * If we're in HT mode and both us and our peer supports LDPC. | |
769 | * We don't need to check our own device's capabilities as our own | |
770 | * ht capabilities would have already been intersected with our peer's. | |
771 | */ | |
772 | if (conf_is_ht(&sc->hw->conf) && | |
773 | (sta->ht_cap.cap & IEEE80211_HT_CAP_LDPC_CODING)) | |
774 | tx_info->flags |= IEEE80211_TX_CTL_LDPC; | |
775 | ||
58b5190e FF |
776 | if (conf_is_ht(&sc->hw->conf) && |
777 | (sta->ht_cap.cap & IEEE80211_HT_CAP_TX_STBC)) | |
778 | tx_info->flags |= (1 << IEEE80211_TX_CTL_STBC_SHIFT); | |
779 | ||
3900898c | 780 | if (is_probe) { |
f078f209 LR |
781 | /* set one try for probe rates. For the |
782 | * probes don't enable rts */ | |
c89424df | 783 | ath_rc_rate_set_series(rate_table, &rates[i++], txrc, |
5c0ba62f | 784 | 1, rix, 0); |
f078f209 | 785 | |
f078f209 LR |
786 | /* Get the next tried/allowed rate. No RTS for the next series |
787 | * after the probe rate | |
788 | */ | |
5c0ba62f | 789 | ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &rix); |
c89424df | 790 | ath_rc_rate_set_series(rate_table, &rates[i++], txrc, |
5c0ba62f | 791 | try_per_rate, rix, 0); |
14587ce2 VT |
792 | |
793 | tx_info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE; | |
f078f209 | 794 | } else { |
f078f209 | 795 | /* Set the choosen rate. No RTS for first series entry. */ |
c89424df | 796 | ath_rc_rate_set_series(rate_table, &rates[i++], txrc, |
5c0ba62f | 797 | try_per_rate, rix, 0); |
f078f209 LR |
798 | } |
799 | ||
800 | /* Fill in the other rates for multirate retry */ | |
3900898c | 801 | for ( ; i < 4; i++) { |
dd190183 LR |
802 | /* Use twice the number of tries for the last MRR segment. */ |
803 | if (i + 1 == 4) | |
65896510 | 804 | try_per_rate = 8; |
dd190183 | 805 | |
5c0ba62f | 806 | ath_rc_get_lower_rix(rate_table, ath_rc_priv, rix, &rix); |
f078f209 | 807 | /* All other rates in the series have RTS enabled */ |
c89424df | 808 | ath_rc_rate_set_series(rate_table, &rates[i], txrc, |
5c0ba62f | 809 | try_per_rate, rix, 1); |
f078f209 LR |
810 | } |
811 | ||
812 | /* | |
813 | * NB:Change rate series to enable aggregation when operating | |
814 | * at lower MCS rates. When first rate in series is MCS2 | |
815 | * in HT40 @ 2.4GHz, series should look like: | |
816 | * | |
817 | * {MCS2, MCS1, MCS0, MCS0}. | |
818 | * | |
819 | * When first rate in series is MCS3 in HT20 @ 2.4GHz, series should | |
820 | * look like: | |
821 | * | |
822 | * {MCS3, MCS2, MCS1, MCS1} | |
823 | * | |
824 | * So, set fourth rate in series to be same as third one for | |
825 | * above conditions. | |
826 | */ | |
3706de6f | 827 | if ((sc->hw->conf.channel->band == IEEE80211_BAND_2GHZ) && |
ecf70441 | 828 | (conf_is_ht(&sc->hw->conf))) { |
40990ec0 | 829 | u8 dot11rate = rate_table->info[rix].dot11rate; |
f078f209 LR |
830 | u8 phy = rate_table->info[rix].phy; |
831 | if (i == 4 && | |
832 | ((dot11rate == 2 && phy == WLAN_RC_PHY_HT_40_SS) || | |
dc2222a8 | 833 | (dot11rate == 3 && phy == WLAN_RC_PHY_HT_20_SS))) { |
a8efee4f S |
834 | rates[3].idx = rates[2].idx; |
835 | rates[3].flags = rates[2].flags; | |
f078f209 LR |
836 | } |
837 | } | |
c89424df S |
838 | |
839 | /* | |
840 | * Force hardware to use computed duration for next | |
841 | * fragment by disabling multi-rate retry, which | |
842 | * updates duration based on the multi-rate duration table. | |
843 | * | |
844 | * FIXME: Fix duration | |
845 | */ | |
7682a76d LR |
846 | if (ieee80211_has_morefrags(fc) || |
847 | (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG)) { | |
c89424df S |
848 | rates[1].count = rates[2].count = rates[3].count = 0; |
849 | rates[1].idx = rates[2].idx = rates[3].idx = 0; | |
850 | rates[0].count = ATH_TXMAXTRY; | |
851 | } | |
852 | ||
853 | /* Setup RTS/CTS */ | |
854 | ath_rc_rate_set_rtscts(sc, rate_table, tx_info); | |
f078f209 LR |
855 | } |
856 | ||
0ff2b5c0 | 857 | static void ath_rc_update_per(struct ath_softc *sc, |
4f0fc7c3 | 858 | const struct ath_rate_table *rate_table, |
2c5a744d | 859 | struct ath_rate_priv *ath_rc_priv, |
827e69bf | 860 | struct ieee80211_tx_info *tx_info, |
2c5a744d S |
861 | int tx_rate, int xretries, int retries, |
862 | u32 now_msec) | |
f078f209 | 863 | { |
827e69bf | 864 | int count, n_bad_frames; |
f078f209 | 865 | u8 last_per; |
07b2fa5a | 866 | static const u32 nretry_to_per_lookup[10] = { |
f078f209 LR |
867 | 100 * 0 / 1, |
868 | 100 * 1 / 4, | |
869 | 100 * 1 / 2, | |
870 | 100 * 3 / 4, | |
871 | 100 * 4 / 5, | |
872 | 100 * 5 / 6, | |
873 | 100 * 6 / 7, | |
874 | 100 * 7 / 8, | |
875 | 100 * 8 / 9, | |
876 | 100 * 9 / 10 | |
877 | }; | |
878 | ||
922bac60 | 879 | last_per = ath_rc_priv->per[tx_rate]; |
827e69bf | 880 | n_bad_frames = tx_info->status.ampdu_len - tx_info->status.ampdu_ack_len; |
f078f209 LR |
881 | |
882 | if (xretries) { | |
f078f209 | 883 | if (xretries == 1) { |
922bac60 VT |
884 | ath_rc_priv->per[tx_rate] += 30; |
885 | if (ath_rc_priv->per[tx_rate] > 100) | |
886 | ath_rc_priv->per[tx_rate] = 100; | |
f078f209 LR |
887 | } else { |
888 | /* xretries == 2 */ | |
87c1687d | 889 | count = ARRAY_SIZE(nretry_to_per_lookup); |
f078f209 LR |
890 | if (retries >= count) |
891 | retries = count - 1; | |
2c5a744d | 892 | |
f078f209 | 893 | /* new_PER = 7/8*old_PER + 1/8*(currentPER) */ |
922bac60 | 894 | ath_rc_priv->per[tx_rate] = |
2c5a744d | 895 | (u8)(last_per - (last_per >> 3) + (100 >> 3)); |
f078f209 LR |
896 | } |
897 | ||
898 | /* xretries == 1 or 2 */ | |
899 | ||
256b7759 S |
900 | if (ath_rc_priv->probe_rate == tx_rate) |
901 | ath_rc_priv->probe_rate = 0; | |
f078f209 | 902 | |
2c5a744d | 903 | } else { /* xretries == 0 */ |
87c1687d | 904 | count = ARRAY_SIZE(nretry_to_per_lookup); |
f078f209 LR |
905 | if (retries >= count) |
906 | retries = count - 1; | |
2c5a744d | 907 | |
827e69bf | 908 | if (n_bad_frames) { |
dc2222a8 | 909 | /* new_PER = 7/8*old_PER + 1/8*(currentPER) |
f078f209 LR |
910 | * Assuming that n_frames is not 0. The current PER |
911 | * from the retries is 100 * retries / (retries+1), | |
912 | * since the first retries attempts failed, and the | |
913 | * next one worked. For the one that worked, | |
914 | * n_bad_frames subframes out of n_frames wored, | |
915 | * so the PER for that part is | |
916 | * 100 * n_bad_frames / n_frames, and it contributes | |
917 | * 100 * n_bad_frames / (n_frames * (retries+1)) to | |
918 | * the above PER. The expression below is a | |
919 | * simplified version of the sum of these two terms. | |
920 | */ | |
827e69bf FF |
921 | if (tx_info->status.ampdu_len > 0) { |
922 | int n_frames, n_bad_tries; | |
2c5a744d S |
923 | u8 cur_per, new_per; |
924 | ||
827e69bf FF |
925 | n_bad_tries = retries * tx_info->status.ampdu_len + |
926 | n_bad_frames; | |
927 | n_frames = tx_info->status.ampdu_len * (retries + 1); | |
928 | cur_per = (100 * n_bad_tries / n_frames) >> 3; | |
2c5a744d | 929 | new_per = (u8)(last_per - (last_per >> 3) + cur_per); |
922bac60 | 930 | ath_rc_priv->per[tx_rate] = new_per; |
2c5a744d | 931 | } |
f078f209 | 932 | } else { |
922bac60 | 933 | ath_rc_priv->per[tx_rate] = |
2c5a744d S |
934 | (u8)(last_per - (last_per >> 3) + |
935 | (nretry_to_per_lookup[retries] >> 3)); | |
f078f209 LR |
936 | } |
937 | ||
f078f209 LR |
938 | |
939 | /* | |
940 | * If we got at most one retry then increase the max rate if | |
941 | * this was a probe. Otherwise, ignore the probe. | |
942 | */ | |
256b7759 | 943 | if (ath_rc_priv->probe_rate && ath_rc_priv->probe_rate == tx_rate) { |
827e69bf | 944 | if (retries > 0 || 2 * n_bad_frames > tx_info->status.ampdu_len) { |
f078f209 LR |
945 | /* |
946 | * Since we probed with just a single attempt, | |
947 | * any retries means the probe failed. Also, | |
948 | * if the attempt worked, but more than half | |
949 | * the subframes were bad then also consider | |
950 | * the probe a failure. | |
951 | */ | |
256b7759 | 952 | ath_rc_priv->probe_rate = 0; |
f078f209 LR |
953 | } else { |
954 | u8 probe_rate = 0; | |
955 | ||
2c5a744d S |
956 | ath_rc_priv->rate_max_phy = |
957 | ath_rc_priv->probe_rate; | |
256b7759 | 958 | probe_rate = ath_rc_priv->probe_rate; |
f078f209 | 959 | |
922bac60 VT |
960 | if (ath_rc_priv->per[probe_rate] > 30) |
961 | ath_rc_priv->per[probe_rate] = 20; | |
f078f209 | 962 | |
256b7759 | 963 | ath_rc_priv->probe_rate = 0; |
f078f209 LR |
964 | |
965 | /* | |
966 | * Since this probe succeeded, we allow the next | |
967 | * probe twice as soon. This allows the maxRate | |
968 | * to move up faster if the probes are | |
af901ca1 | 969 | * successful. |
f078f209 | 970 | */ |
2c5a744d S |
971 | ath_rc_priv->probe_time = |
972 | now_msec - rate_table->probe_interval / 2; | |
f078f209 LR |
973 | } |
974 | } | |
975 | ||
976 | if (retries > 0) { | |
977 | /* | |
978 | * Don't update anything. We don't know if | |
979 | * this was because of collisions or poor signal. | |
f078f209 | 980 | */ |
256b7759 | 981 | ath_rc_priv->hw_maxretry_pktcnt = 0; |
f078f209 LR |
982 | } else { |
983 | /* | |
984 | * It worked with no retries. First ignore bogus (small) | |
985 | * rssi_ack values. | |
986 | */ | |
256b7759 S |
987 | if (tx_rate == ath_rc_priv->rate_max_phy && |
988 | ath_rc_priv->hw_maxretry_pktcnt < 255) { | |
989 | ath_rc_priv->hw_maxretry_pktcnt++; | |
f078f209 LR |
990 | } |
991 | ||
f078f209 LR |
992 | } |
993 | } | |
2c5a744d S |
994 | } |
995 | ||
772d5515 FF |
996 | static void ath_debug_stat_retries(struct ath_rate_priv *rc, int rix, |
997 | int xretries, int retries, u8 per) | |
998 | { | |
999 | struct ath_rc_stats *stats = &rc->rcstats[rix]; | |
1000 | ||
1001 | stats->xretries += xretries; | |
1002 | stats->retries += retries; | |
1003 | stats->per = per; | |
1004 | } | |
1005 | ||
2c5a744d S |
1006 | /* Update PER, RSSI and whatever else that the code thinks it is doing. |
1007 | If you can make sense of all this, you really need to go out more. */ | |
1008 | ||
1009 | static void ath_rc_update_ht(struct ath_softc *sc, | |
1010 | struct ath_rate_priv *ath_rc_priv, | |
827e69bf | 1011 | struct ieee80211_tx_info *tx_info, |
2c5a744d S |
1012 | int tx_rate, int xretries, int retries) |
1013 | { | |
2c5a744d S |
1014 | u32 now_msec = jiffies_to_msecs(jiffies); |
1015 | int rate; | |
1016 | u8 last_per; | |
4e990018 | 1017 | const struct ath_rate_table *rate_table = ath_rc_priv->rate_table; |
2c5a744d S |
1018 | int size = ath_rc_priv->rate_table_size; |
1019 | ||
1020 | if ((tx_rate < 0) || (tx_rate > rate_table->rate_cnt)) | |
1021 | return; | |
f078f209 | 1022 | |
922bac60 | 1023 | last_per = ath_rc_priv->per[tx_rate]; |
2c5a744d S |
1024 | |
1025 | /* Update PER first */ | |
0ff2b5c0 SM |
1026 | ath_rc_update_per(sc, rate_table, ath_rc_priv, |
1027 | tx_info, tx_rate, xretries, | |
1028 | retries, now_msec); | |
f078f209 LR |
1029 | |
1030 | /* | |
1031 | * If this rate looks bad (high PER) then stop using it for | |
1032 | * a while (except if we are probing). | |
1033 | */ | |
922bac60 | 1034 | if (ath_rc_priv->per[tx_rate] >= 55 && tx_rate > 0 && |
dc2222a8 | 1035 | rate_table->info[tx_rate].ratekbps <= |
256b7759 | 1036 | rate_table->info[ath_rc_priv->rate_max_phy].ratekbps) { |
39448b0a LR |
1037 | ath_rc_get_lower_rix(rate_table, ath_rc_priv, |
1038 | (u8)tx_rate, &ath_rc_priv->rate_max_phy); | |
f078f209 LR |
1039 | |
1040 | /* Don't probe for a little while. */ | |
256b7759 | 1041 | ath_rc_priv->probe_time = now_msec; |
f078f209 LR |
1042 | } |
1043 | ||
f078f209 LR |
1044 | /* Make sure the rates below this have lower PER */ |
1045 | /* Monotonicity is kept only for rates below the current rate. */ | |
922bac60 | 1046 | if (ath_rc_priv->per[tx_rate] < last_per) { |
f078f209 | 1047 | for (rate = tx_rate - 1; rate >= 0; rate--) { |
f078f209 | 1048 | |
922bac60 VT |
1049 | if (ath_rc_priv->per[rate] > |
1050 | ath_rc_priv->per[rate+1]) { | |
1051 | ath_rc_priv->per[rate] = | |
1052 | ath_rc_priv->per[rate+1]; | |
f078f209 LR |
1053 | } |
1054 | } | |
1055 | } | |
1056 | ||
1057 | /* Maintain monotonicity for rates above the current rate */ | |
2c5a744d | 1058 | for (rate = tx_rate; rate < size - 1; rate++) { |
922bac60 VT |
1059 | if (ath_rc_priv->per[rate+1] < |
1060 | ath_rc_priv->per[rate]) | |
1061 | ath_rc_priv->per[rate+1] = | |
1062 | ath_rc_priv->per[rate]; | |
f078f209 LR |
1063 | } |
1064 | ||
f078f209 LR |
1065 | /* Every so often, we reduce the thresholds |
1066 | * and PER (different for CCK and OFDM). */ | |
256b7759 | 1067 | if (now_msec - ath_rc_priv->per_down_time >= |
c4130465 | 1068 | rate_table->probe_interval) { |
2c5a744d | 1069 | for (rate = 0; rate < size; rate++) { |
922bac60 VT |
1070 | ath_rc_priv->per[rate] = |
1071 | 7 * ath_rc_priv->per[rate] / 8; | |
f078f209 LR |
1072 | } |
1073 | ||
256b7759 | 1074 | ath_rc_priv->per_down_time = now_msec; |
f078f209 | 1075 | } |
2c5a744d | 1076 | |
772d5515 | 1077 | ath_debug_stat_retries(ath_rc_priv, tx_rate, xretries, retries, |
922bac60 | 1078 | ath_rc_priv->per[tx_rate]); |
029bc432 | 1079 | |
2c5a744d S |
1080 | } |
1081 | ||
4f0fc7c3 | 1082 | static int ath_rc_get_rateindex(const struct ath_rate_table *rate_table, |
2c5a744d S |
1083 | struct ieee80211_tx_rate *rate) |
1084 | { | |
1d9d06a2 | 1085 | int rix = 0, i = 0; |
07b2fa5a | 1086 | static const int mcs_rix_off[] = { 7, 15, 20, 21, 22, 23 }; |
2c5a744d | 1087 | |
545750d3 FF |
1088 | if (!(rate->flags & IEEE80211_TX_RC_MCS)) |
1089 | return rate->idx; | |
1090 | ||
f0bce44f | 1091 | while (i < ARRAY_SIZE(mcs_rix_off) && rate->idx > mcs_rix_off[i]) { |
1d9d06a2 SB |
1092 | rix++; i++; |
1093 | } | |
1094 | ||
1095 | rix += rate->idx + rate_table->mcs_start; | |
1096 | ||
2c5a744d S |
1097 | if ((rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) && |
1098 | (rate->flags & IEEE80211_TX_RC_SHORT_GI)) | |
545750d3 | 1099 | rix = rate_table->info[rix].ht_index; |
2c5a744d | 1100 | else if (rate->flags & IEEE80211_TX_RC_SHORT_GI) |
545750d3 | 1101 | rix = rate_table->info[rix].sgi_index; |
2c5a744d | 1102 | else if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) |
545750d3 | 1103 | rix = rate_table->info[rix].cw40index; |
2c5a744d S |
1104 | |
1105 | return rix; | |
f078f209 LR |
1106 | } |
1107 | ||
46d14a58 S |
1108 | static void ath_rc_tx_status(struct ath_softc *sc, |
1109 | struct ath_rate_priv *ath_rc_priv, | |
1110 | struct ieee80211_tx_info *tx_info, | |
1111 | int final_ts_idx, int xretries, int long_retry) | |
f078f209 | 1112 | { |
4f0fc7c3 | 1113 | const struct ath_rate_table *rate_table; |
a8efee4f | 1114 | struct ieee80211_tx_rate *rates = tx_info->status.rates; |
f078f209 | 1115 | u8 flags; |
2c5a744d | 1116 | u32 i = 0, rix; |
f078f209 | 1117 | |
4e990018 | 1118 | rate_table = ath_rc_priv->rate_table; |
f078f209 LR |
1119 | |
1120 | /* | |
1121 | * If the first rate is not the final index, there | |
1122 | * are intermediate rate failures to be processed. | |
1123 | */ | |
1124 | if (final_ts_idx != 0) { | |
1125 | /* Process intermediate rates that failed.*/ | |
2c5a744d S |
1126 | for (i = 0; i < final_ts_idx ; i++) { |
1127 | if (rates[i].count != 0 && (rates[i].idx >= 0)) { | |
1128 | flags = rates[i].flags; | |
1129 | ||
f078f209 LR |
1130 | /* If HT40 and we have switched mode from |
1131 | * 40 to 20 => don't update */ | |
2c5a744d | 1132 | |
a8efee4f | 1133 | if ((flags & IEEE80211_TX_RC_40_MHZ_WIDTH) && |
f5c38ef0 | 1134 | !(ath_rc_priv->ht_cap & WLAN_RC_40_FLAG)) |
f078f209 | 1135 | return; |
e63835b0 | 1136 | |
2c5a744d | 1137 | rix = ath_rc_get_rateindex(rate_table, &rates[i]); |
827e69bf FF |
1138 | ath_rc_update_ht(sc, ath_rc_priv, tx_info, |
1139 | rix, xretries ? 1 : 2, | |
2c5a744d | 1140 | rates[i].count); |
f078f209 LR |
1141 | } |
1142 | } | |
1143 | } else { | |
1144 | /* | |
1145 | * Handle the special case of MIMO PS burst, where the second | |
1146 | * aggregate is sent out with only one rate and one try. | |
1147 | * Treating it as an excessive retry penalizes the rate | |
1148 | * inordinately. | |
1149 | */ | |
a8efee4f | 1150 | if (rates[0].count == 1 && xretries == 1) |
f078f209 LR |
1151 | xretries = 2; |
1152 | } | |
1153 | ||
2c5a744d S |
1154 | flags = rates[i].flags; |
1155 | ||
f078f209 | 1156 | /* If HT40 and we have switched mode from 40 to 20 => don't update */ |
a8efee4f | 1157 | if ((flags & IEEE80211_TX_RC_40_MHZ_WIDTH) && |
f5c38ef0 | 1158 | !(ath_rc_priv->ht_cap & WLAN_RC_40_FLAG)) |
f078f209 LR |
1159 | return; |
1160 | ||
2c5a744d | 1161 | rix = ath_rc_get_rateindex(rate_table, &rates[i]); |
827e69bf | 1162 | ath_rc_update_ht(sc, ath_rc_priv, tx_info, rix, xretries, long_retry); |
f078f209 LR |
1163 | } |
1164 | ||
4f0fc7c3 LR |
1165 | static const |
1166 | struct ath_rate_table *ath_choose_rate_table(struct ath_softc *sc, | |
1167 | enum ieee80211_band band, | |
d4659912 | 1168 | bool is_ht) |
e11602b7 | 1169 | { |
c46917bb | 1170 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
e11602b7 S |
1171 | |
1172 | switch(band) { | |
1173 | case IEEE80211_BAND_2GHZ: | |
e11602b7 | 1174 | if (is_ht) |
d4659912 FF |
1175 | return &ar5416_11ng_ratetable; |
1176 | return &ar5416_11g_ratetable; | |
e11602b7 | 1177 | case IEEE80211_BAND_5GHZ: |
e11602b7 | 1178 | if (is_ht) |
d4659912 FF |
1179 | return &ar5416_11na_ratetable; |
1180 | return &ar5416_11a_ratetable; | |
e11602b7 | 1181 | default: |
226afe68 | 1182 | ath_dbg(common, ATH_DBG_CONFIG, "Invalid band\n"); |
e11602b7 S |
1183 | return NULL; |
1184 | } | |
e11602b7 S |
1185 | } |
1186 | ||
5ddfac3b | 1187 | static void ath_rc_init(struct ath_softc *sc, |
46d14a58 | 1188 | struct ath_rate_priv *ath_rc_priv, |
5ddfac3b | 1189 | struct ieee80211_supported_band *sband, |
9331ec80 | 1190 | struct ieee80211_sta *sta, |
4f0fc7c3 | 1191 | const struct ath_rate_table *rate_table) |
f078f209 | 1192 | { |
5ddfac3b | 1193 | struct ath_rateset *rateset = &ath_rc_priv->neg_rates; |
c46917bb | 1194 | struct ath_common *common = ath9k_hw_common(sc->sc_ah); |
5ddfac3b | 1195 | u8 *ht_mcs = (u8 *)&ath_rc_priv->neg_ht_rates; |
f078f209 | 1196 | u8 i, j, k, hi = 0, hthi = 0; |
f078f209 LR |
1197 | |
1198 | /* Initial rate table size. Will change depending | |
1199 | * on the working rate set */ | |
46d14a58 | 1200 | ath_rc_priv->rate_table_size = RATE_TABLE_SIZE; |
f078f209 LR |
1201 | |
1202 | /* Initialize thresholds according to the global rate table */ | |
5ddfac3b | 1203 | for (i = 0 ; i < ath_rc_priv->rate_table_size; i++) { |
922bac60 | 1204 | ath_rc_priv->per[i] = 0; |
f078f209 LR |
1205 | } |
1206 | ||
1207 | /* Determine the valid rates */ | |
2ae79d52 | 1208 | ath_rc_init_valid_rate_idx(ath_rc_priv); |
f078f209 LR |
1209 | |
1210 | for (i = 0; i < WLAN_RC_PHY_MAX; i++) { | |
1211 | for (j = 0; j < MAX_TX_RATE_PHY; j++) | |
256b7759 S |
1212 | ath_rc_priv->valid_phy_rateidx[i][j] = 0; |
1213 | ath_rc_priv->valid_phy_ratecnt[i] = 0; | |
f078f209 | 1214 | } |
f078f209 | 1215 | |
f078f209 LR |
1216 | if (!rateset->rs_nrates) { |
1217 | /* No working rate, just initialize valid rates */ | |
2c5a744d | 1218 | hi = ath_rc_init_validrates(ath_rc_priv, rate_table, |
c89424df | 1219 | ath_rc_priv->ht_cap); |
f078f209 LR |
1220 | } else { |
1221 | /* Use intersection of working rates and valid rates */ | |
2c5a744d | 1222 | hi = ath_rc_setvalid_rates(ath_rc_priv, rate_table, |
c89424df | 1223 | rateset, ath_rc_priv->ht_cap); |
5ddfac3b | 1224 | if (ath_rc_priv->ht_cap & WLAN_RC_HT_FLAG) { |
2c5a744d | 1225 | hthi = ath_rc_setvalid_htrates(ath_rc_priv, |
c89424df S |
1226 | rate_table, |
1227 | ht_mcs, | |
1228 | ath_rc_priv->ht_cap); | |
f078f209 LR |
1229 | } |
1230 | hi = A_MAX(hi, hthi); | |
1231 | } | |
1232 | ||
256b7759 S |
1233 | ath_rc_priv->rate_table_size = hi + 1; |
1234 | ath_rc_priv->rate_max_phy = 0; | |
9680e8a3 | 1235 | BUG_ON(ath_rc_priv->rate_table_size > RATE_TABLE_SIZE); |
f078f209 LR |
1236 | |
1237 | for (i = 0, k = 0; i < WLAN_RC_PHY_MAX; i++) { | |
256b7759 S |
1238 | for (j = 0; j < ath_rc_priv->valid_phy_ratecnt[i]; j++) { |
1239 | ath_rc_priv->valid_rate_index[k++] = | |
1240 | ath_rc_priv->valid_phy_rateidx[i][j]; | |
f078f209 LR |
1241 | } |
1242 | ||
46d14a58 | 1243 | if (!ath_rc_valid_phyrate(i, rate_table->initial_ratemax, 1) |
256b7759 | 1244 | || !ath_rc_priv->valid_phy_ratecnt[i]) |
f078f209 LR |
1245 | continue; |
1246 | ||
256b7759 | 1247 | ath_rc_priv->rate_max_phy = ath_rc_priv->valid_phy_rateidx[i][j-1]; |
f078f209 | 1248 | } |
9680e8a3 LR |
1249 | BUG_ON(ath_rc_priv->rate_table_size > RATE_TABLE_SIZE); |
1250 | BUG_ON(k > RATE_TABLE_SIZE); | |
f078f209 | 1251 | |
256b7759 | 1252 | ath_rc_priv->max_valid_rate = k; |
256b7759 S |
1253 | ath_rc_sort_validrates(rate_table, ath_rc_priv); |
1254 | ath_rc_priv->rate_max_phy = ath_rc_priv->valid_rate_index[k-4]; | |
772d5515 | 1255 | ath_rc_priv->rate_table = rate_table; |
9331ec80 | 1256 | |
226afe68 JP |
1257 | ath_dbg(common, ATH_DBG_CONFIG, |
1258 | "RC Initialized with capabilities: 0x%x\n", | |
1259 | ath_rc_priv->ht_cap); | |
f078f209 LR |
1260 | } |
1261 | ||
c2da50e5 | 1262 | static u8 ath_rc_build_ht_caps(struct ath_softc *sc, struct ieee80211_sta *sta, |
6473d24d | 1263 | bool is_cw40, bool is_sgi) |
9331ec80 S |
1264 | { |
1265 | u8 caps = 0; | |
1266 | ||
c2da50e5 | 1267 | if (sta->ht_cap.ht_supported) { |
9331ec80 | 1268 | caps = WLAN_RC_HT_FLAG; |
1d9d06a2 SB |
1269 | if (sta->ht_cap.mcs.rx_mask[1] && sta->ht_cap.mcs.rx_mask[2]) |
1270 | caps |= WLAN_RC_TS_FLAG | WLAN_RC_DS_FLAG; | |
1271 | else if (sta->ht_cap.mcs.rx_mask[1]) | |
3553727c | 1272 | caps |= WLAN_RC_DS_FLAG; |
9331ec80 S |
1273 | if (is_cw40) |
1274 | caps |= WLAN_RC_40_FLAG; | |
6473d24d | 1275 | if (is_sgi) |
9331ec80 S |
1276 | caps |= WLAN_RC_SGI_FLAG; |
1277 | } | |
1278 | ||
1279 | return caps; | |
1280 | } | |
1281 | ||
334b0602 FF |
1282 | static bool ath_tx_aggr_check(struct ath_softc *sc, struct ath_node *an, |
1283 | u8 tidno) | |
1284 | { | |
1285 | struct ath_atx_tid *txtid; | |
1286 | ||
1287 | if (!(sc->sc_flags & SC_OP_TXAGGR)) | |
1288 | return false; | |
1289 | ||
1290 | txtid = ATH_AN_2_TID(an, tidno); | |
1291 | ||
1292 | if (!(txtid->state & (AGGR_ADDBA_COMPLETE | AGGR_ADDBA_PROGRESS))) | |
1293 | return true; | |
1294 | return false; | |
1295 | } | |
1296 | ||
1297 | ||
9331ec80 S |
1298 | /***********************************/ |
1299 | /* mac80211 Rate Control callbacks */ | |
1300 | /***********************************/ | |
1301 | ||
772d5515 FF |
1302 | static void ath_debug_stat_rc(struct ath_rate_priv *rc, int final_rate) |
1303 | { | |
1304 | struct ath_rc_stats *stats; | |
1305 | ||
1306 | stats = &rc->rcstats[final_rate]; | |
1307 | stats->success++; | |
1308 | } | |
1309 | ||
1310 | ||
4b7679a5 JB |
1311 | static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband, |
1312 | struct ieee80211_sta *sta, void *priv_sta, | |
f078f209 LR |
1313 | struct sk_buff *skb) |
1314 | { | |
1315 | struct ath_softc *sc = priv; | |
46d14a58 | 1316 | struct ath_rate_priv *ath_rc_priv = priv_sta; |
f078f209 LR |
1317 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); |
1318 | struct ieee80211_hdr *hdr; | |
2ae79d52 | 1319 | int final_ts_idx = 0, tx_status = 0; |
827e69bf | 1320 | int long_retry = 0; |
f078f209 | 1321 | __le16 fc; |
827e69bf | 1322 | int i; |
f078f209 | 1323 | |
f078f209 LR |
1324 | hdr = (struct ieee80211_hdr *)skb->data; |
1325 | fc = hdr->frame_control; | |
19b96750 | 1326 | for (i = 0; i < sc->hw->max_rates; i++) { |
827e69bf FF |
1327 | struct ieee80211_tx_rate *rate = &tx_info->status.rates[i]; |
1328 | if (!rate->count) | |
1329 | break; | |
1330 | ||
1331 | final_ts_idx = i; | |
1332 | long_retry = rate->count - 1; | |
1333 | } | |
f078f209 | 1334 | |
d969847c FF |
1335 | if (!priv_sta || !ieee80211_is_data(fc)) |
1336 | return; | |
1337 | ||
1338 | /* This packet was aggregated but doesn't carry status info */ | |
1339 | if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && | |
1340 | !(tx_info->flags & IEEE80211_TX_STAT_AMPDU)) | |
827e69bf | 1341 | return; |
e6a9854b | 1342 | |
827e69bf FF |
1343 | if (tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) |
1344 | return; | |
e6a9854b | 1345 | |
a8909cfb BS |
1346 | if (!(tx_info->flags & IEEE80211_TX_STAT_AMPDU)) { |
1347 | tx_info->status.ampdu_ack_len = | |
1348 | (tx_info->flags & IEEE80211_TX_STAT_ACK ? 1 : 0); | |
1349 | tx_info->status.ampdu_len = 1; | |
1350 | } | |
1351 | ||
1d666d8e | 1352 | if (!(tx_info->flags & IEEE80211_TX_STAT_ACK)) |
46d14a58 S |
1353 | tx_status = 1; |
1354 | ||
1355 | ath_rc_tx_status(sc, ath_rc_priv, tx_info, final_ts_idx, tx_status, | |
2ae79d52 | 1356 | long_retry); |
46d14a58 | 1357 | |
d22b0022 | 1358 | /* Check if aggregation has to be enabled for this tid */ |
d5c232ff VT |
1359 | if (conf_is_ht(&sc->hw->conf) && |
1360 | !(skb->protocol == cpu_to_be16(ETH_P_PAE))) { | |
c8b57606 LR |
1361 | if (ieee80211_is_data_qos(fc) && |
1362 | skb_get_queue_mapping(skb) != IEEE80211_AC_VO) { | |
d22b0022 S |
1363 | u8 *qc, tid; |
1364 | struct ath_node *an; | |
1365 | ||
1366 | qc = ieee80211_get_qos_ctl(hdr); | |
1367 | tid = qc[0] & 0xf; | |
1368 | an = (struct ath_node *)sta->drv_priv; | |
1369 | ||
1370 | if(ath_tx_aggr_check(sc, an, tid)) | |
bd2ce6e4 | 1371 | ieee80211_start_tx_ba_session(sta, tid, 0); |
d22b0022 S |
1372 | } |
1373 | } | |
7a7dec65 | 1374 | |
4e990018 FF |
1375 | ath_debug_stat_rc(ath_rc_priv, |
1376 | ath_rc_get_rateindex(ath_rc_priv->rate_table, | |
1377 | &tx_info->status.rates[final_ts_idx])); | |
f078f209 LR |
1378 | } |
1379 | ||
4b7679a5 JB |
1380 | static void ath_rate_init(void *priv, struct ieee80211_supported_band *sband, |
1381 | struct ieee80211_sta *sta, void *priv_sta) | |
f078f209 | 1382 | { |
4b7679a5 | 1383 | struct ath_softc *sc = priv; |
46d14a58 | 1384 | struct ath_rate_priv *ath_rc_priv = priv_sta; |
545750d3 | 1385 | const struct ath_rate_table *rate_table; |
6473d24d | 1386 | bool is_cw40, is_sgi = false; |
f078f209 LR |
1387 | int i, j = 0; |
1388 | ||
7b4d2735 S |
1389 | for (i = 0; i < sband->n_bitrates; i++) { |
1390 | if (sta->supp_rates[sband->band] & BIT(i)) { | |
1391 | ath_rc_priv->neg_rates.rs_rates[j] | |
1392 | = (sband->bitrates[i].bitrate * 2) / 10; | |
1393 | j++; | |
1394 | } | |
1395 | } | |
1396 | ath_rc_priv->neg_rates.rs_nrates = j; | |
f078f209 | 1397 | |
a4510bf8 | 1398 | if (sta->ht_cap.ht_supported) { |
7b4d2735 | 1399 | for (i = 0, j = 0; i < 77; i++) { |
ae5eb026 | 1400 | if (sta->ht_cap.mcs.rx_mask[i/8] & (1<<(i%8))) |
dc2222a8 | 1401 | ath_rc_priv->neg_ht_rates.rs_rates[j++] = i; |
f078f209 LR |
1402 | if (j == ATH_RATE_MAX) |
1403 | break; | |
1404 | } | |
dc2222a8 | 1405 | ath_rc_priv->neg_ht_rates.rs_nrates = j; |
f078f209 | 1406 | } |
7b4d2735 | 1407 | |
5d4c4282 | 1408 | is_cw40 = !!(sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40); |
6473d24d VT |
1409 | |
1410 | if (is_cw40) | |
5d4c4282 | 1411 | is_sgi = !!(sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40); |
6473d24d | 1412 | else if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20) |
5d4c4282 | 1413 | is_sgi = !!(sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20); |
9331ec80 S |
1414 | |
1415 | /* Choose rate table first */ | |
1416 | ||
4e990018 | 1417 | rate_table = ath_choose_rate_table(sc, sband->band, |
d4659912 | 1418 | sta->ht_cap.ht_supported); |
9331ec80 | 1419 | |
6473d24d | 1420 | ath_rc_priv->ht_cap = ath_rc_build_ht_caps(sc, sta, is_cw40, is_sgi); |
9331ec80 S |
1421 | ath_rc_init(sc, priv_sta, sband, sta, rate_table); |
1422 | } | |
1423 | ||
1424 | static void ath_rate_update(void *priv, struct ieee80211_supported_band *sband, | |
1425 | struct ieee80211_sta *sta, void *priv_sta, | |
4fa00437 | 1426 | u32 changed, enum nl80211_channel_type oper_chan_type) |
9331ec80 S |
1427 | { |
1428 | struct ath_softc *sc = priv; | |
1429 | struct ath_rate_priv *ath_rc_priv = priv_sta; | |
4f0fc7c3 | 1430 | const struct ath_rate_table *rate_table = NULL; |
6473d24d | 1431 | bool oper_cw40 = false, oper_sgi; |
5d4c4282 MSS |
1432 | bool local_cw40 = !!(ath_rc_priv->ht_cap & WLAN_RC_40_FLAG); |
1433 | bool local_sgi = !!(ath_rc_priv->ht_cap & WLAN_RC_SGI_FLAG); | |
9331ec80 S |
1434 | |
1435 | /* FIXME: Handle AP mode later when we support CWM */ | |
1436 | ||
1437 | if (changed & IEEE80211_RC_HT_CHANGED) { | |
1438 | if (sc->sc_ah->opmode != NL80211_IFTYPE_STATION) | |
1439 | return; | |
1440 | ||
4fa00437 S |
1441 | if (oper_chan_type == NL80211_CHAN_HT40MINUS || |
1442 | oper_chan_type == NL80211_CHAN_HT40PLUS) | |
9331ec80 S |
1443 | oper_cw40 = true; |
1444 | ||
6473d24d VT |
1445 | if (oper_cw40) |
1446 | oper_sgi = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40) ? | |
1447 | true : false; | |
1448 | else if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20) | |
1449 | oper_sgi = (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ? | |
1450 | true : false; | |
1451 | else | |
1452 | oper_sgi = false; | |
9331ec80 | 1453 | |
6473d24d | 1454 | if ((local_cw40 != oper_cw40) || (local_sgi != oper_sgi)) { |
9331ec80 | 1455 | rate_table = ath_choose_rate_table(sc, sband->band, |
d4659912 | 1456 | sta->ht_cap.ht_supported); |
c2da50e5 | 1457 | ath_rc_priv->ht_cap = ath_rc_build_ht_caps(sc, sta, |
6473d24d | 1458 | oper_cw40, oper_sgi); |
9331ec80 S |
1459 | ath_rc_init(sc, priv_sta, sband, sta, rate_table); |
1460 | ||
226afe68 JP |
1461 | ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_CONFIG, |
1462 | "Operating HT Bandwidth changed to: %d\n", | |
1463 | sc->hw->conf.channel_type); | |
9331ec80 S |
1464 | } |
1465 | } | |
f078f209 LR |
1466 | } |
1467 | ||
772d5515 FF |
1468 | #ifdef CONFIG_ATH9K_DEBUGFS |
1469 | ||
1470 | static int ath9k_debugfs_open(struct inode *inode, struct file *file) | |
1471 | { | |
1472 | file->private_data = inode->i_private; | |
1473 | return 0; | |
1474 | } | |
1475 | ||
1476 | static ssize_t read_file_rcstat(struct file *file, char __user *user_buf, | |
1477 | size_t count, loff_t *ppos) | |
1478 | { | |
1479 | struct ath_rate_priv *rc = file->private_data; | |
1480 | char *buf; | |
1481 | unsigned int len = 0, max; | |
1482 | int i = 0; | |
1483 | ssize_t retval; | |
1484 | ||
1485 | if (rc->rate_table == NULL) | |
1486 | return 0; | |
1487 | ||
1488 | max = 80 + rc->rate_table->rate_cnt * 1024 + 1; | |
1489 | buf = kmalloc(max, GFP_KERNEL); | |
1490 | if (buf == NULL) | |
1491 | return -ENOMEM; | |
1492 | ||
1493 | len += sprintf(buf, "%6s %6s %6s " | |
1494 | "%10s %10s %10s %10s\n", | |
1495 | "HT", "MCS", "Rate", | |
1496 | "Success", "Retries", "XRetries", "PER"); | |
1497 | ||
1498 | for (i = 0; i < rc->rate_table->rate_cnt; i++) { | |
1499 | u32 ratekbps = rc->rate_table->info[i].ratekbps; | |
1500 | struct ath_rc_stats *stats = &rc->rcstats[i]; | |
1501 | char mcs[5]; | |
1502 | char htmode[5]; | |
1503 | int used_mcs = 0, used_htmode = 0; | |
1504 | ||
1505 | if (WLAN_RC_PHY_HT(rc->rate_table->info[i].phy)) { | |
1506 | used_mcs = snprintf(mcs, 5, "%d", | |
1507 | rc->rate_table->info[i].ratecode); | |
1508 | ||
1509 | if (WLAN_RC_PHY_40(rc->rate_table->info[i].phy)) | |
1510 | used_htmode = snprintf(htmode, 5, "HT40"); | |
1511 | else if (WLAN_RC_PHY_20(rc->rate_table->info[i].phy)) | |
1512 | used_htmode = snprintf(htmode, 5, "HT20"); | |
1513 | else | |
1514 | used_htmode = snprintf(htmode, 5, "????"); | |
1515 | } | |
1516 | ||
1517 | mcs[used_mcs] = '\0'; | |
1518 | htmode[used_htmode] = '\0'; | |
1519 | ||
1520 | len += snprintf(buf + len, max - len, | |
1521 | "%6s %6s %3u.%d: " | |
1522 | "%10u %10u %10u %10u\n", | |
1523 | htmode, | |
1524 | mcs, | |
1525 | ratekbps / 1000, | |
1526 | (ratekbps % 1000) / 100, | |
1527 | stats->success, | |
1528 | stats->retries, | |
1529 | stats->xretries, | |
1530 | stats->per); | |
1531 | } | |
1532 | ||
1533 | if (len > max) | |
1534 | len = max; | |
1535 | ||
1536 | retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); | |
1537 | kfree(buf); | |
1538 | return retval; | |
1539 | } | |
1540 | ||
1541 | static const struct file_operations fops_rcstat = { | |
1542 | .read = read_file_rcstat, | |
1543 | .open = ath9k_debugfs_open, | |
1544 | .owner = THIS_MODULE | |
1545 | }; | |
1546 | ||
1547 | static void ath_rate_add_sta_debugfs(void *priv, void *priv_sta, | |
1548 | struct dentry *dir) | |
1549 | { | |
1550 | struct ath_rate_priv *rc = priv_sta; | |
1551 | debugfs_create_file("rc_stats", S_IRUGO, dir, rc, &fops_rcstat); | |
1552 | } | |
1553 | ||
1554 | #endif /* CONFIG_ATH9K_DEBUGFS */ | |
1555 | ||
4b7679a5 | 1556 | static void *ath_rate_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir) |
f078f209 | 1557 | { |
9ac58615 | 1558 | return hw->priv; |
f078f209 LR |
1559 | } |
1560 | ||
1561 | static void ath_rate_free(void *priv) | |
1562 | { | |
1563 | return; | |
1564 | } | |
1565 | ||
4b7679a5 | 1566 | static void *ath_rate_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp) |
f078f209 LR |
1567 | { |
1568 | struct ath_softc *sc = priv; | |
46d14a58 | 1569 | struct ath_rate_priv *rate_priv; |
f078f209 | 1570 | |
46d14a58 | 1571 | rate_priv = kzalloc(sizeof(struct ath_rate_priv), gfp); |
f078f209 | 1572 | if (!rate_priv) { |
3800276a JP |
1573 | ath_err(ath9k_hw_common(sc->sc_ah), |
1574 | "Unable to allocate private rc structure\n"); | |
f078f209 LR |
1575 | return NULL; |
1576 | } | |
fe60594a | 1577 | |
f078f209 LR |
1578 | return rate_priv; |
1579 | } | |
1580 | ||
4b7679a5 JB |
1581 | static void ath_rate_free_sta(void *priv, struct ieee80211_sta *sta, |
1582 | void *priv_sta) | |
f078f209 | 1583 | { |
46d14a58 | 1584 | struct ath_rate_priv *rate_priv = priv_sta; |
fe60594a | 1585 | kfree(rate_priv); |
f078f209 LR |
1586 | } |
1587 | ||
1588 | static struct rate_control_ops ath_rate_ops = { | |
1589 | .module = NULL, | |
1590 | .name = "ath9k_rate_control", | |
1591 | .tx_status = ath_tx_status, | |
1592 | .get_rate = ath_get_rate, | |
1593 | .rate_init = ath_rate_init, | |
9331ec80 | 1594 | .rate_update = ath_rate_update, |
f078f209 LR |
1595 | .alloc = ath_rate_alloc, |
1596 | .free = ath_rate_free, | |
1597 | .alloc_sta = ath_rate_alloc_sta, | |
4b7679a5 | 1598 | .free_sta = ath_rate_free_sta, |
772d5515 FF |
1599 | #ifdef CONFIG_ATH9K_DEBUGFS |
1600 | .add_sta_debugfs = ath_rate_add_sta_debugfs, | |
1601 | #endif | |
f078f209 LR |
1602 | }; |
1603 | ||
1604 | int ath_rate_control_register(void) | |
1605 | { | |
1606 | return ieee80211_rate_control_register(&ath_rate_ops); | |
1607 | } | |
1608 | ||
1609 | void ath_rate_control_unregister(void) | |
1610 | { | |
1611 | ieee80211_rate_control_unregister(&ath_rate_ops); | |
1612 | } |