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authorLuis R. Rodriguez <lrodriguez@atheros.com>2009-03-30 22:30:33 -0400
committerJohn W. Linville <linville@tuxdriver.com>2009-04-22 16:54:38 -0400
commit203c4805e91786f9a010bc7945a0fde70c9da28e (patch)
tree00415276b2fe65713f066ffe07b11ad2d8b6bea8 /drivers/net/wireless/ath9k/rc.c
parent1878f77e13b9d720b78c4f818b94bfd4a7f596e5 (diff)
atheros: put atheros wireless drivers into ath/
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath9k/rc.c')
-rw-r--r--drivers/net/wireless/ath9k/rc.c1752
1 files changed, 0 insertions, 1752 deletions
diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c
deleted file mode 100644
index a13668b9b6d..00000000000
--- a/drivers/net/wireless/ath9k/rc.c
+++ /dev/null
@@ -1,1752 +0,0 @@
-/*
- * Copyright (c) 2004 Video54 Technologies, Inc.
- * Copyright (c) 2004-2009 Atheros Communications, Inc.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include "ath9k.h"
-
-static struct ath_rate_table ar5416_11na_ratetable = {
- 42,
- {
- { VALID, VALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
- 5400, 0x0b, 0x00, 12,
- 0, 2, 1, 0, 0, 0, 0, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
- 7800, 0x0f, 0x00, 18,
- 0, 3, 1, 1, 1, 1, 1, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
- 10000, 0x0a, 0x00, 24,
- 2, 4, 2, 2, 2, 2, 2, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
- 13900, 0x0e, 0x00, 36,
- 2, 6, 2, 3, 3, 3, 3, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
- 17300, 0x09, 0x00, 48,
- 4, 10, 3, 4, 4, 4, 4, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
- 23000, 0x0d, 0x00, 72,
- 4, 14, 3, 5, 5, 5, 5, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
- 27400, 0x08, 0x00, 96,
- 4, 20, 3, 6, 6, 6, 6, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
- 29300, 0x0c, 0x00, 108,
- 4, 23, 3, 7, 7, 7, 7, 0 },
- { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
- 6400, 0x80, 0x00, 0,
- 0, 2, 3, 8, 24, 8, 24, 3216 },
- { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 13000, /* 13 Mb */
- 12700, 0x81, 0x00, 1,
- 2, 4, 3, 9, 25, 9, 25, 6434 },
- { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 19500, /* 19.5 Mb */
- 18800, 0x82, 0x00, 2,
- 2, 6, 3, 10, 26, 10, 26, 9650 },
- { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 26000, /* 26 Mb */
- 25000, 0x83, 0x00, 3,
- 4, 10, 3, 11, 27, 11, 27, 12868 },
- { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 39000, /* 39 Mb */
- 36700, 0x84, 0x00, 4,
- 4, 14, 3, 12, 28, 12, 28, 19304 },
- { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 52000, /* 52 Mb */
- 48100, 0x85, 0x00, 5,
- 4, 20, 3, 13, 29, 13, 29, 25740 },
- { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 58500, /* 58.5 Mb */
- 53500, 0x86, 0x00, 6,
- 4, 23, 3, 14, 30, 14, 30, 28956 },
- { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 65000, /* 65 Mb */
- 59000, 0x87, 0x00, 7,
- 4, 25, 3, 15, 31, 15, 32, 32180 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 13000, /* 13 Mb */
- 12700, 0x88, 0x00,
- 8, 0, 2, 3, 16, 33, 16, 33, 6430 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 26000, /* 26 Mb */
- 24800, 0x89, 0x00, 9,
- 2, 4, 3, 17, 34, 17, 34, 12860 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 39000, /* 39 Mb */
- 36600, 0x8a, 0x00, 10,
- 2, 6, 3, 18, 35, 18, 35, 19300 },
- { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 52000, /* 52 Mb */
- 48100, 0x8b, 0x00, 11,
- 4, 10, 3, 19, 36, 19, 36, 25736 },
- { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 78000, /* 78 Mb */
- 69500, 0x8c, 0x00, 12,
- 4, 14, 3, 20, 37, 20, 37, 38600 },
- { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 104000, /* 104 Mb */
- 89500, 0x8d, 0x00, 13,
- 4, 20, 3, 21, 38, 21, 38, 51472 },
- { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 117000, /* 117 Mb */
- 98900, 0x8e, 0x00, 14,
- 4, 23, 3, 22, 39, 22, 39, 57890 },
- { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 130000, /* 130 Mb */
- 108300, 0x8f, 0x00, 15,
- 4, 25, 3, 23, 40, 23, 41, 64320 },
- { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 13500, /* 13.5 Mb */
- 13200, 0x80, 0x00, 0,
- 0, 2, 3, 8, 24, 24, 24, 6684 },
- { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 27500, /* 27.0 Mb */
- 25900, 0x81, 0x00, 1,
- 2, 4, 3, 9, 25, 25, 25, 13368 },
- { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 40500, /* 40.5 Mb */
- 38600, 0x82, 0x00, 2,
- 2, 6, 3, 10, 26, 26, 26, 20052 },
- { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 54000, /* 54 Mb */
- 49800, 0x83, 0x00, 3,
- 4, 10, 3, 11, 27, 27, 27, 26738 },
- { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 81500, /* 81 Mb */
- 72200, 0x84, 0x00, 4,
- 4, 14, 3, 12, 28, 28, 28, 40104 },
- { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 108000, /* 108 Mb */
- 92900, 0x85, 0x00, 5,
- 4, 20, 3, 13, 29, 29, 29, 53476 },
- { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 121500, /* 121.5 Mb */
- 102700, 0x86, 0x00, 6,
- 4, 23, 3, 14, 30, 30, 30, 60156 },
- { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 135000, /* 135 Mb */
- 112000, 0x87, 0x00, 7,
- 4, 25, 3, 15, 31, 32, 32, 66840 },
- { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS_HGI, 150000, /* 150 Mb */
- 122000, 0x87, 0x00, 7,
- 4, 25, 3, 15, 31, 32, 32, 74200 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 27000, /* 27 Mb */
- 25800, 0x88, 0x00, 8,
- 0, 2, 3, 16, 33, 33, 33, 13360 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 54000, /* 54 Mb */
- 49800, 0x89, 0x00, 9,
- 2, 4, 3, 17, 34, 34, 34, 26720 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 81000, /* 81 Mb */
- 71900, 0x8a, 0x00, 10,
- 2, 6, 3, 18, 35, 35, 35, 40080 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 108000, /* 108 Mb */
- 92500, 0x8b, 0x00, 11,
- 4, 10, 3, 19, 36, 36, 36, 53440 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 162000, /* 162 Mb */
- 130300, 0x8c, 0x00, 12,
- 4, 14, 3, 20, 37, 37, 37, 80160 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 216000, /* 216 Mb */
- 162800, 0x8d, 0x00, 13,
- 4, 20, 3, 21, 38, 38, 38, 106880 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 243000, /* 243 Mb */
- 178200, 0x8e, 0x00, 14,
- 4, 23, 3, 22, 39, 39, 39, 120240 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 270000, /* 270 Mb */
- 192100, 0x8f, 0x00, 15,
- 4, 25, 3, 23, 40, 41, 41, 133600 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS_HGI, 300000, /* 300 Mb */
- 207000, 0x8f, 0x00, 15,
- 4, 25, 3, 23, 40, 41, 41, 148400 },
- },
- 50, /* probe interval */
- 50, /* rssi reduce interval */
- WLAN_RC_HT_FLAG, /* Phy rates allowed initially */
-};
-
-/* 4ms frame limit not used for NG mode. The values filled
- * for HT are the 64K max aggregate limit */
-
-static struct ath_rate_table ar5416_11ng_ratetable = {
- 46,
- {
- { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */
- 900, 0x1b, 0x00, 2,
- 0, 0, 1, 0, 0, 0, 0, 0 },
- { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 2000, /* 2 Mb */
- 1900, 0x1a, 0x04, 4,
- 1, 1, 1, 1, 1, 1, 1, 0 },
- { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 5500, /* 5.5 Mb */
- 4900, 0x19, 0x04, 11,
- 2, 2, 2, 2, 2, 2, 2, 0 },
- { VALID_ALL, VALID_ALL, WLAN_RC_PHY_CCK, 11000, /* 11 Mb */
- 8100, 0x18, 0x04, 22,
- 3, 3, 2, 3, 3, 3, 3, 0 },
- { INVALID, INVALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
- 5400, 0x0b, 0x00, 12,
- 4, 2, 1, 4, 4, 4, 4, 0 },
- { INVALID, INVALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
- 7800, 0x0f, 0x00, 18,
- 4, 3, 1, 5, 5, 5, 5, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
- 10100, 0x0a, 0x00, 24,
- 6, 4, 1, 6, 6, 6, 6, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
- 14100, 0x0e, 0x00, 36,
- 6, 6, 2, 7, 7, 7, 7, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
- 17700, 0x09, 0x00, 48,
- 8, 10, 3, 8, 8, 8, 8, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
- 23700, 0x0d, 0x00, 72,
- 8, 14, 3, 9, 9, 9, 9, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
- 27400, 0x08, 0x00, 96,
- 8, 20, 3, 10, 10, 10, 10, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
- 30900, 0x0c, 0x00, 108,
- 8, 23, 3, 11, 11, 11, 11, 0 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_20_SS, 6500, /* 6.5 Mb */
- 6400, 0x80, 0x00, 0,
- 4, 2, 3, 12, 28, 12, 28, 3216 },
- { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 13000, /* 13 Mb */
- 12700, 0x81, 0x00, 1,
- 6, 4, 3, 13, 29, 13, 29, 6434 },
- { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 19500, /* 19.5 Mb */
- 18800, 0x82, 0x00, 2,
- 6, 6, 3, 14, 30, 14, 30, 9650 },
- { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 26000, /* 26 Mb */
- 25000, 0x83, 0x00, 3,
- 8, 10, 3, 15, 31, 15, 31, 12868 },
- { VALID_20, VALID_20, WLAN_RC_PHY_HT_20_SS, 39000, /* 39 Mb */
- 36700, 0x84, 0x00, 4,
- 8, 14, 3, 16, 32, 16, 32, 19304 },
- { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 52000, /* 52 Mb */
- 48100, 0x85, 0x00, 5,
- 8, 20, 3, 17, 33, 17, 33, 25740 },
- { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 58500, /* 58.5 Mb */
- 53500, 0x86, 0x00, 6,
- 8, 23, 3, 18, 34, 18, 34, 28956 },
- { INVALID, VALID_20, WLAN_RC_PHY_HT_20_SS, 65000, /* 65 Mb */
- 59000, 0x87, 0x00, 7,
- 8, 25, 3, 19, 35, 19, 36, 32180 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 13000, /* 13 Mb */
- 12700, 0x88, 0x00, 8,
- 4, 2, 3, 20, 37, 20, 37, 6430 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 26000, /* 26 Mb */
- 24800, 0x89, 0x00, 9,
- 6, 4, 3, 21, 38, 21, 38, 12860 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_20_DS, 39000, /* 39 Mb */
- 36600, 0x8a, 0x00, 10,
- 6, 6, 3, 22, 39, 22, 39, 19300 },
- { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 52000, /* 52 Mb */
- 48100, 0x8b, 0x00, 11,
- 8, 10, 3, 23, 40, 23, 40, 25736 },
- { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 78000, /* 78 Mb */
- 69500, 0x8c, 0x00, 12,
- 8, 14, 3, 24, 41, 24, 41, 38600 },
- { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 104000, /* 104 Mb */
- 89500, 0x8d, 0x00, 13,
- 8, 20, 3, 25, 42, 25, 42, 51472 },
- { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 117000, /* 117 Mb */
- 98900, 0x8e, 0x00, 14,
- 8, 23, 3, 26, 43, 26, 44, 57890 },
- { VALID_20, INVALID, WLAN_RC_PHY_HT_20_DS, 130000, /* 130 Mb */
- 108300, 0x8f, 0x00, 15,
- 8, 25, 3, 27, 44, 27, 45, 64320 },
- { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 13500, /* 13.5 Mb */
- 13200, 0x80, 0x00, 0,
- 8, 2, 3, 12, 28, 28, 28, 6684 },
- { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 27500, /* 27.0 Mb */
- 25900, 0x81, 0x00, 1,
- 8, 4, 3, 13, 29, 29, 29, 13368 },
- { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 40500, /* 40.5 Mb */
- 38600, 0x82, 0x00, 2,
- 8, 6, 3, 14, 30, 30, 30, 20052 },
- { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 54000, /* 54 Mb */
- 49800, 0x83, 0x00, 3,
- 8, 10, 3, 15, 31, 31, 31, 26738 },
- { VALID_40, VALID_40, WLAN_RC_PHY_HT_40_SS, 81500, /* 81 Mb */
- 72200, 0x84, 0x00, 4,
- 8, 14, 3, 16, 32, 32, 32, 40104 },
- { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 108000, /* 108 Mb */
- 92900, 0x85, 0x00, 5,
- 8, 20, 3, 17, 33, 33, 33, 53476 },
- { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 121500, /* 121.5 Mb */
- 102700, 0x86, 0x00, 6,
- 8, 23, 3, 18, 34, 34, 34, 60156 },
- { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS, 135000, /* 135 Mb */
- 112000, 0x87, 0x00, 7,
- 8, 23, 3, 19, 35, 36, 36, 66840 },
- { INVALID, VALID_40, WLAN_RC_PHY_HT_40_SS_HGI, 150000, /* 150 Mb */
- 122000, 0x87, 0x00, 7,
- 8, 25, 3, 19, 35, 36, 36, 74200 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 27000, /* 27 Mb */
- 25800, 0x88, 0x00, 8,
- 8, 2, 3, 20, 37, 37, 37, 13360 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 54000, /* 54 Mb */
- 49800, 0x89, 0x00, 9,
- 8, 4, 3, 21, 38, 38, 38, 26720 },
- { INVALID, INVALID, WLAN_RC_PHY_HT_40_DS, 81000, /* 81 Mb */
- 71900, 0x8a, 0x00, 10,
- 8, 6, 3, 22, 39, 39, 39, 40080 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 108000, /* 108 Mb */
- 92500, 0x8b, 0x00, 11,
- 8, 10, 3, 23, 40, 40, 40, 53440 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 162000, /* 162 Mb */
- 130300, 0x8c, 0x00, 12,
- 8, 14, 3, 24, 41, 41, 41, 80160 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 216000, /* 216 Mb */
- 162800, 0x8d, 0x00, 13,
- 8, 20, 3, 25, 42, 42, 42, 106880 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 243000, /* 243 Mb */
- 178200, 0x8e, 0x00, 14,
- 8, 23, 3, 26, 43, 43, 43, 120240 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS, 270000, /* 270 Mb */
- 192100, 0x8f, 0x00, 15,
- 8, 23, 3, 27, 44, 45, 45, 133600 },
- { VALID_40, INVALID, WLAN_RC_PHY_HT_40_DS_HGI, 300000, /* 300 Mb */
- 207000, 0x8f, 0x00, 15,
- 8, 25, 3, 27, 44, 45, 45, 148400 },
- },
- 50, /* probe interval */
- 50, /* rssi reduce interval */
- WLAN_RC_HT_FLAG, /* Phy rates allowed initially */
-};
-
-static struct ath_rate_table ar5416_11a_ratetable = {
- 8,
- {
- { VALID, VALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
- 5400, 0x0b, 0x00, (0x80|12),
- 0, 2, 1, 0, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
- 7800, 0x0f, 0x00, 18,
- 0, 3, 1, 1, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
- 10000, 0x0a, 0x00, (0x80|24),
- 2, 4, 2, 2, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
- 13900, 0x0e, 0x00, 36,
- 2, 6, 2, 3, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
- 17300, 0x09, 0x00, (0x80|48),
- 4, 10, 3, 4, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
- 23000, 0x0d, 0x00, 72,
- 4, 14, 3, 5, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
- 27400, 0x08, 0x00, 96,
- 4, 19, 3, 6, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
- 29300, 0x0c, 0x00, 108,
- 4, 23, 3, 7, 0 },
- },
- 50, /* probe interval */
- 50, /* rssi reduce interval */
- 0, /* Phy rates allowed initially */
-};
-
-static struct ath_rate_table ar5416_11g_ratetable = {
- 12,
- {
- { VALID, VALID, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */
- 900, 0x1b, 0x00, 2,
- 0, 0, 1, 0, 0 },
- { VALID, VALID, WLAN_RC_PHY_CCK, 2000, /* 2 Mb */
- 1900, 0x1a, 0x04, 4,
- 1, 1, 1, 1, 0 },
- { VALID, VALID, WLAN_RC_PHY_CCK, 5500, /* 5.5 Mb */
- 4900, 0x19, 0x04, 11,
- 2, 2, 2, 2, 0 },
- { VALID, VALID, WLAN_RC_PHY_CCK, 11000, /* 11 Mb */
- 8100, 0x18, 0x04, 22,
- 3, 3, 2, 3, 0 },
- { INVALID, INVALID, WLAN_RC_PHY_OFDM, 6000, /* 6 Mb */
- 5400, 0x0b, 0x00, 12,
- 4, 2, 1, 4, 0 },
- { INVALID, INVALID, WLAN_RC_PHY_OFDM, 9000, /* 9 Mb */
- 7800, 0x0f, 0x00, 18,
- 4, 3, 1, 5, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 12000, /* 12 Mb */
- 10000, 0x0a, 0x00, 24,
- 6, 4, 1, 6, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 18000, /* 18 Mb */
- 13900, 0x0e, 0x00, 36,
- 6, 6, 2, 7, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 24000, /* 24 Mb */
- 17300, 0x09, 0x00, 48,
- 8, 10, 3, 8, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 36000, /* 36 Mb */
- 23000, 0x0d, 0x00, 72,
- 8, 14, 3, 9, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 48000, /* 48 Mb */
- 27400, 0x08, 0x00, 96,
- 8, 19, 3, 10, 0 },
- { VALID, VALID, WLAN_RC_PHY_OFDM, 54000, /* 54 Mb */
- 29300, 0x0c, 0x00, 108,
- 8, 23, 3, 11, 0 },
- },
- 50, /* probe interval */
- 50, /* rssi reduce interval */
- 0, /* Phy rates allowed initially */
-};
-
-static struct ath_rate_table ar5416_11b_ratetable = {
- 4,
- {
- { VALID, VALID, WLAN_RC_PHY_CCK, 1000, /* 1 Mb */
- 900, 0x1b, 0x00, (0x80|2),
- 0, 0, 1, 0, 0 },
- { VALID, VALID, WLAN_RC_PHY_CCK, 2000, /* 2 Mb */
- 1800, 0x1a, 0x04, (0x80|4),
- 1, 1, 1, 1, 0 },
- { VALID, VALID, WLAN_RC_PHY_CCK, 5500, /* 5.5 Mb */
- 4300, 0x19, 0x04, (0x80|11),
- 1, 2, 2, 2, 0 },
- { VALID, VALID, WLAN_RC_PHY_CCK, 11000, /* 11 Mb */
- 7100, 0x18, 0x04, (0x80|22),
- 1, 4, 100, 3, 0 },
- },
- 100, /* probe interval */
- 100, /* rssi reduce 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(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_isvalid_txmask(struct ath_rate_priv *ath_rc_priv,
- u8 index)
-{
- ASSERT(index <= ath_rc_priv->rate_table_size);
- return ath_rc_priv->valid_rate_index[index];
-}
-
-static inline int ath_rc_get_nextvalid_txrate(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_nextlowervalid_txrate(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,
- 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,
- 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,
- 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;
-}
-
-static u8 ath_rc_ratefind_ht(struct ath_softc *sc,
- struct ath_rate_priv *ath_rc_priv,
- struct ath_rate_table *rate_table,
- int *is_probing)
-{
- u32 dt, best_thruput, this_thruput, now_msec;
- u8 rate, next_rate, best_rate, maxindex, minindex;
- int8_t rssi_last, rssi_reduce = 0, index = 0;
-
- *is_probing = 0;
-
- rssi_last = median(ath_rc_priv->rssi_last,
- ath_rc_priv->rssi_last_prev,
- ath_rc_priv->rssi_last_prev2);
-
- /*
- * Age (reduce) last ack rssi based on how old it is.
- * The bizarre numbers are so the delta is 160msec,
- * meaning we divide by 16.
- * 0msec <= dt <= 25msec: don't derate
- * 25msec <= dt <= 185msec: derate linearly from 0 to 10dB
- * 185msec <= dt: derate by 10dB
- */
-
- now_msec = jiffies_to_msecs(jiffies);
- dt = now_msec - ath_rc_priv->rssi_time;
-
- if (dt >= 185)
- rssi_reduce = 10;
- else if (dt >= 25)
- rssi_reduce = (u8)((dt - 25) >> 4);
-
- /* Now reduce rssi_last by rssi_reduce */
- if (rssi_last < rssi_reduce)
- rssi_last = 0;
- else
- rssi_last -= rssi_reduce;
-
- /*
- * Now look up the rate in the rssi table and return it.
- * If no rates match then we return 0 (lowest rate)
- */
-
- 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->state[rate].per;
- 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;
- ath_rc_priv->rssi_last_lookup = rssi_last;
-
- /*
- * 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;
-
- ASSERT((rate_table->info[rate].valid &&
- (ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG)) ||
- (rate_table->info[rate].valid_single_stream &&
- !(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG)));
-
- return rate;
-}
-
-static void ath_rc_rate_set_series(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,
- 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) &&
- !(tx_info->flags & IEEE80211_TX_CTL_NO_ACK) &&
- (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 u8 ath_rc_rate_getidx(struct ath_softc *sc,
- struct ath_rate_priv *ath_rc_priv,
- struct ath_rate_table *rate_table,
- u8 rix, u16 stepdown,
- u16 min_rate)
-{
- u32 j;
- u8 nextindex;
-
- if (min_rate) {
- for (j = RATE_TABLE_SIZE; j > 0; j--) {
- if (ath_rc_get_nextlowervalid_txrate(rate_table,
- ath_rc_priv, rix, &nextindex))
- rix = nextindex;
- else
- break;
- }
- } else {
- for (j = stepdown; j > 0; j--) {
- if (ath_rc_get_nextlowervalid_txrate(rate_table,
- ath_rc_priv, rix, &nextindex))
- rix = nextindex;
- else
- break;
- }
- }
- return rix;
-}
-
-static void ath_rc_ratefind(struct ath_softc *sc,
- struct ath_rate_priv *ath_rc_priv,
- struct ieee80211_tx_rate_control *txrc)
-{
- 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 = 0, i = 0, rix, nrix;
- int is_probe = 0;
-
- rate_table = sc->cur_rate_table;
- rix = ath_rc_ratefind_ht(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);
-
- try_per_rate = (ATH_11N_TXMAXTRY/4);
- /* Get the next tried/allowed rate. No RTS for the next series
- * after the probe rate
- */
- nrix = ath_rc_rate_getidx(sc, ath_rc_priv,
- rate_table, nrix, 1, 0);
- 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 {
- try_per_rate = (ATH_11N_TXMAXTRY/4);
- /* 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++) {
- u8 try_num;
- u8 min_rate;
-
- try_num = ((i + 1) == 4) ?
- ATH_11N_TXMAXTRY - (try_per_rate * i) : try_per_rate ;
- min_rate = (((i + 1) == 4) && 0);
-
- nrix = ath_rc_rate_getidx(sc, ath_rc_priv,
- rate_table, nrix, 1, min_rate);
- /* All other rates in the series have RTS enabled */
- ath_rc_rate_set_series(rate_table, &rates[i], txrc,
- try_num, 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 (!(tx_info->flags & IEEE80211_TX_CTL_NO_ACK) &&
- (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,
- 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->state[tx_rate].per;
-
- if (xretries) {
- if (xretries == 1) {
- ath_rc_priv->state[tx_rate].per += 30;
- if (ath_rc_priv->state[tx_rate].per > 100)
- ath_rc_priv->state[tx_rate].per = 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->state[tx_rate].per =
- (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->state[tx_rate].per = new_per;
- }
- } else {
- ath_rc_priv->state[tx_rate].per =
- (u8)(last_per - (last_per >> 3) +
- (nretry_to_per_lookup[retries] >> 3));
- }
-
- ath_rc_priv->rssi_last_prev2 = ath_rc_priv->rssi_last_prev;
- ath_rc_priv->rssi_last_prev = ath_rc_priv->rssi_last;
- ath_rc_priv->rssi_last = tx_info_priv->tx.ts_rssi;
- ath_rc_priv->rssi_time = now_msec;
-
- /*
- * 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->state[probe_rate].per > 30)
- ath_rc_priv->state[probe_rate].per = 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.
- *
- * Later: if rssi_ack is close to
- * ath_rc_priv->state[txRate].rssi_thres and we see lots
- * of retries, then we could increase
- * ath_rc_priv->state[txRate].rssi_thres.
- */
- ath_rc_priv->hw_maxretry_pktcnt = 0;
- } else {
- int32_t rssi_ackAvg;
- int8_t rssi_thres;
- int8_t rssi_ack_vmin;
-
- /*
- * 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++;
- }
-
- if (tx_info_priv->tx.ts_rssi <
- rate_table->info[tx_rate].rssi_ack_validmin)
- goto exit;
-
- /* Average the rssi */
- if (tx_rate != ath_rc_priv->rssi_sum_rate) {
- ath_rc_priv->rssi_sum_rate = tx_rate;
- ath_rc_priv->rssi_sum =
- ath_rc_priv->rssi_sum_cnt = 0;
- }
-
- ath_rc_priv->rssi_sum += tx_info_priv->tx.ts_rssi;
- ath_rc_priv->rssi_sum_cnt++;
-
- if (ath_rc_priv->rssi_sum_cnt < 4)
- goto exit;
-
- rssi_ackAvg =
- (ath_rc_priv->rssi_sum + 2) / 4;
- rssi_thres =
- ath_rc_priv->state[tx_rate].rssi_thres;
- rssi_ack_vmin =
- rate_table->info[tx_rate].rssi_ack_validmin;
-
- ath_rc_priv->rssi_sum =
- ath_rc_priv->rssi_sum_cnt = 0;
-
- /* Now reduce the current rssi threshold */
- if ((rssi_ackAvg < rssi_thres + 2) &&
- (rssi_thres > rssi_ack_vmin)) {
- ath_rc_priv->state[tx_rate].rssi_thres--;
- }
-
- state_change = true;
- }
- }
-exit:
- 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)
-{
-#define CHK_RSSI(rate) \
- ((ath_rc_priv->state[(rate)].rssi_thres + \
- rate_table->info[(rate)].rssi_ack_deltamin) > \
- ath_rc_priv->state[(rate)+1].rssi_thres)
-
- u32 now_msec = jiffies_to_msecs(jiffies);
- int rate;
- u8 last_per;
- bool state_change = false;
- 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;
-
- /* To compensate for some imbalance between ctrl and ext. channel */
-
- if (WLAN_RC_PHY_40(rate_table->info[tx_rate].phy))
- tx_info_priv->tx.ts_rssi =
- tx_info_priv->tx.ts_rssi < 3 ? 0 :
- tx_info_priv->tx.ts_rssi - 3;
-
- last_per = ath_rc_priv->state[tx_rate].per;
-
- /* 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->state[tx_rate].per >= 55 && tx_rate > 0 &&
- rate_table->info[tx_rate].ratekbps <=
- rate_table->info[ath_rc_priv->rate_max_phy].ratekbps) {
- ath_rc_get_nextlowervalid_txrate(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;
- }
-
- if (state_change) {
- /*
- * Make sure the rates above this have higher rssi thresholds.
- * (Note: Monotonicity is kept within the OFDM rates and
- * within the CCK rates. However, no adjustment is
- * made to keep the rssi thresholds monotonically
- * increasing between the CCK and OFDM rates.)
- */
- for (rate = tx_rate; rate < size - 1; rate++) {
- if (rate_table->info[rate+1].phy !=
- rate_table->info[tx_rate].phy)
- break;
-
- if (CHK_RSSI(rate)) {
- ath_rc_priv->state[rate+1].rssi_thres =
- ath_rc_priv->state[rate].rssi_thres +
- rate_table->info[rate].rssi_ack_deltamin;
- }
- }
-
- /* Make sure the rates below this have lower rssi thresholds. */
- for (rate = tx_rate - 1; rate >= 0; rate--) {
- if (rate_table->info[rate].phy !=
- rate_table->info[tx_rate].phy)
- break;
-
- if (CHK_RSSI(rate)) {
- if (ath_rc_priv->state[rate+1].rssi_thres <
- rate_table->info[rate].rssi_ack_deltamin)
- ath_rc_priv->state[rate].rssi_thres = 0;
- else {
- ath_rc_priv->state[rate].rssi_thres =
- ath_rc_priv->state[rate+1].rssi_thres -
- rate_table->info[rate].rssi_ack_deltamin;
- }
-
- if (ath_rc_priv->state[rate].rssi_thres <
- rate_table->info[rate].rssi_ack_validmin) {
- ath_rc_priv->state[rate].rssi_thres =
- rate_table->info[rate].rssi_ack_validmin;
- }
- }
- }
- }
-
- /* Make sure the rates below this have lower PER */
- /* Monotonicity is kept only for rates below the current rate. */
- if (ath_rc_priv->state[tx_rate].per < 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->state[rate].per >
- ath_rc_priv->state[rate+1].per) {
- ath_rc_priv->state[rate].per =
- ath_rc_priv->state[rate+1].per;
- }
- }
- }
-
- /* Maintain monotonicity for rates above the current rate */
- for (rate = tx_rate; rate < size - 1; rate++) {
- if (ath_rc_priv->state[rate+1].per <
- ath_rc_priv->state[rate].per)
- ath_rc_priv->state[rate+1].per =
- ath_rc_priv->state[rate].per;
- }
-
- /* Every so often, we reduce the thresholds and
- * PER (different for CCK and OFDM). */
- if (now_msec - ath_rc_priv->rssi_down_time >=
- rate_table->rssi_reduce_interval) {
-
- for (rate = 0; rate < size; rate++) {
- if (ath_rc_priv->state[rate].rssi_thres >
- rate_table->info[rate].rssi_ack_validmin)
- ath_rc_priv->state[rate].rssi_thres -= 1;
- }
- ath_rc_priv->rssi_down_time = now_msec;
- }
-
- /* 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->rssi_reduce_interval) {
- for (rate = 0; rate < size; rate++) {
- ath_rc_priv->state[rate].per =
- 7 * ath_rc_priv->state[rate].per / 8;
- }
-
- ath_rc_priv->per_down_time = now_msec;
- }
-
- ath_debug_stat_retries(sc, tx_rate, xretries, retries,
- ath_rc_priv->state[tx_rate].per);
-
-#undef CHK_RSSI
-}
-
-static int ath_rc_get_rateindex(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);
- 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 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,
- 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->state[i].rssi_thres =
- rate_table->info[i].rssi_ack_validmin;
- ath_rc_priv->state[i].per = 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 ATH_11N_TXMAXTRY
- * 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) ? ATH_11N_TXMAXTRY :
- 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_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
- struct ieee80211_tx_rate_control *txrc)
-{
- struct ieee80211_supported_band *sband = txrc->sband;
- struct sk_buff *skb = txrc->skb;
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
- struct ath_softc *sc = priv;
- struct ath_rate_priv *ath_rc_priv = priv_sta;
- __le16 fc = hdr->frame_control;
-
- /* lowest rate for management and multicast/broadcast frames */
- if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1) ||
- !sta) {
- tx_info->control.rates[0].idx = rate_lowest_index(sband, sta);
- tx_info->control.rates[0].count =
- is_multicast_ether_addr(hdr->addr1) ? 1 : ATH_MGT_TXMAXTRY;
- return;
- }
-
- /* Find tx rate for unicast frames */
- ath_rc_ratefind(sc, ath_rc_priv, txrc);
-}
-
-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;
- 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;
- 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->rssi_down_time = jiffies_to_msecs(jiffies);
- 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_11B] =
- &ar5416_11b_ratetable;
- 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);
-}