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573 lines
19 KiB
573 lines
19 KiB
/* |
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* Copyright (c) 2013 Eugene Krasnikov <[email protected]> |
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* |
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* Permission to use, copy, modify, and/or distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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#include "txrx.h" |
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static inline int get_rssi0(struct wcn36xx_rx_bd *bd) |
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{ |
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return 100 - ((bd->phy_stat0 >> 24) & 0xff); |
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} |
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struct wcn36xx_rate { |
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u16 bitrate; |
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u16 mcs_or_legacy_index; |
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enum mac80211_rx_encoding encoding; |
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enum mac80211_rx_encoding_flags encoding_flags; |
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enum rate_info_bw bw; |
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}; |
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static const struct wcn36xx_rate wcn36xx_rate_table[] = { |
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/* 11b rates */ |
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{ 10, 0, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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{ 20, 1, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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{ 55, 2, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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{ 110, 3, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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|
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/* 11b SP (short preamble) */ |
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{ 10, 0, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 }, |
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{ 20, 1, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 }, |
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{ 55, 2, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 }, |
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{ 110, 3, RX_ENC_LEGACY, RX_ENC_FLAG_SHORTPRE, RATE_INFO_BW_20 }, |
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/* 11ag */ |
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{ 60, 4, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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{ 90, 5, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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{ 120, 6, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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{ 180, 7, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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{ 240, 8, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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{ 360, 9, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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{ 480, 10, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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{ 540, 11, RX_ENC_LEGACY, 0, RATE_INFO_BW_20 }, |
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/* 11n */ |
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{ 65, 0, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 130, 1, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 195, 2, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 260, 3, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 390, 4, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 520, 5, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 585, 6, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 650, 7, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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|
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/* 11n SGI */ |
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{ 72, 0, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, |
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{ 144, 1, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, |
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{ 217, 2, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, |
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{ 289, 3, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, |
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{ 434, 4, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, |
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{ 578, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, |
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{ 650, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, |
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{ 722, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, |
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/* 11n GF (greenfield) */ |
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{ 65, 0, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, |
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{ 130, 1, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, |
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{ 195, 2, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, |
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{ 260, 3, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, |
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{ 390, 4, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, |
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{ 520, 5, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, |
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{ 585, 6, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, |
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{ 650, 7, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_20 }, |
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/* 11n CB (channel bonding) */ |
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{ 135, 0, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 270, 1, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 405, 2, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 540, 3, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 810, 4, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 1080, 5, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 1215, 6, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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/* 11n CB + SGI */ |
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{ 150, 0, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 300, 1, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 450, 2, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 600, 3, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 900, 4, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1200, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1500, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11n GF + CB */ |
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{ 135, 0, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, |
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{ 270, 1, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, |
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{ 405, 2, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, |
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{ 540, 3, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, |
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{ 810, 4, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, |
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{ 1080, 5, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, |
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{ 1215, 6, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, |
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{ 1350, 7, RX_ENC_HT, RX_ENC_FLAG_HT_GF, RATE_INFO_BW_40 }, |
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|
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/* 11ac reserved indices */ |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11ac 20 MHz 800ns GI MCS 0-8 */ |
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{ 65, 0, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 130, 1, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 195, 2, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 260, 3, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 390, 4, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 520, 5, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 585, 6, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 650, 7, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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{ 780, 8, RX_ENC_HT, 0, RATE_INFO_BW_20 }, |
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/* 11ac reserved indices */ |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11ac 20 MHz 400ns SGI MCS 6-8 */ |
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{ 655, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, |
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{ 722, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, |
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{ 866, 8, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_20 }, |
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/* 11ac reserved indices */ |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11ac 40 MHz 800ns GI MCS 0-9 */ |
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{ 135, 0, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 270, 1, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 405, 2, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 540, 3, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 810, 4, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 1080, 5, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 1215, 6, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 1350, 7, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 1620, 8, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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{ 1800, 9, RX_ENC_HT, 0, RATE_INFO_BW_40 }, |
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/* 11ac reserved indices */ |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11ac 40 MHz 400ns SGI MCS 5-7 */ |
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{ 1200, 5, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1500, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11ac reserved index */ |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11ac 40 MHz 400ns SGI MCS 5-7 */ |
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{ 1800, 8, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 2000, 9, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11ac reserved index */ |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11ac 80 MHz 800ns GI MCS 0-7 */ |
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{ 292, 0, RX_ENC_HT, 0, RATE_INFO_BW_80}, |
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{ 585, 1, RX_ENC_HT, 0, RATE_INFO_BW_80}, |
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{ 877, 2, RX_ENC_HT, 0, RATE_INFO_BW_80}, |
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{ 1170, 3, RX_ENC_HT, 0, RATE_INFO_BW_80}, |
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{ 1755, 4, RX_ENC_HT, 0, RATE_INFO_BW_80}, |
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{ 2340, 5, RX_ENC_HT, 0, RATE_INFO_BW_80}, |
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{ 2632, 6, RX_ENC_HT, 0, RATE_INFO_BW_80}, |
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{ 2925, 7, RX_ENC_HT, 0, RATE_INFO_BW_80}, |
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/* 11 ac reserved index */ |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11ac 80 MHz 800 ns GI MCS 8-9 */ |
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{ 3510, 8, RX_ENC_HT, 0, RATE_INFO_BW_80}, |
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{ 3900, 9, RX_ENC_HT, 0, RATE_INFO_BW_80}, |
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/* 11 ac reserved indices */ |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11ac 80 MHz 400 ns SGI MCS 6-7 */ |
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{ 2925, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 }, |
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{ 3250, 7, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 }, |
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/* 11ac reserved index */ |
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{ 1350, 6, RX_ENC_HT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_40 }, |
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/* 11ac 80 MHz 400ns SGI MCS 8-9 */ |
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{ 3900, 8, RX_ENC_VHT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 }, |
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{ 4333, 9, RX_ENC_VHT, RX_ENC_FLAG_SHORT_GI, RATE_INFO_BW_80 }, |
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}; |
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int wcn36xx_rx_skb(struct wcn36xx *wcn, struct sk_buff *skb) |
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{ |
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struct ieee80211_rx_status status; |
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const struct wcn36xx_rate *rate; |
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struct ieee80211_hdr *hdr; |
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struct wcn36xx_rx_bd *bd; |
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struct ieee80211_supported_band *sband; |
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u16 fc, sn; |
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/* |
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* All fields must be 0, otherwise it can lead to |
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* unexpected consequences. |
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*/ |
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memset(&status, 0, sizeof(status)); |
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bd = (struct wcn36xx_rx_bd *)skb->data; |
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buff_to_be((u32 *)bd, sizeof(*bd)/sizeof(u32)); |
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wcn36xx_dbg_dump(WCN36XX_DBG_RX_DUMP, |
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"BD <<< ", (char *)bd, |
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sizeof(struct wcn36xx_rx_bd)); |
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skb_put(skb, bd->pdu.mpdu_header_off + bd->pdu.mpdu_len); |
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skb_pull(skb, bd->pdu.mpdu_header_off); |
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hdr = (struct ieee80211_hdr *) skb->data; |
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fc = __le16_to_cpu(hdr->frame_control); |
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sn = IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl)); |
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status.freq = WCN36XX_CENTER_FREQ(wcn); |
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status.band = WCN36XX_BAND(wcn); |
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status.mactime = 10; |
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status.signal = -get_rssi0(bd); |
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status.antenna = 1; |
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status.flag = 0; |
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status.rx_flags = 0; |
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status.flag |= RX_FLAG_IV_STRIPPED | |
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RX_FLAG_MMIC_STRIPPED | |
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RX_FLAG_DECRYPTED; |
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wcn36xx_dbg(WCN36XX_DBG_RX, "status.flags=%x\n", status.flag); |
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if (bd->rate_id < ARRAY_SIZE(wcn36xx_rate_table)) { |
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rate = &wcn36xx_rate_table[bd->rate_id]; |
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status.encoding = rate->encoding; |
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status.enc_flags = rate->encoding_flags; |
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status.bw = rate->bw; |
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status.rate_idx = rate->mcs_or_legacy_index; |
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sband = wcn->hw->wiphy->bands[status.band]; |
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status.nss = 1; |
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if (status.band == NL80211_BAND_5GHZ && |
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status.encoding == RX_ENC_LEGACY && |
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status.rate_idx >= sband->n_bitrates) { |
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/* no dsss rates in 5Ghz rates table */ |
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status.rate_idx -= 4; |
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} |
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} else { |
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status.encoding = 0; |
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status.bw = 0; |
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status.enc_flags = 0; |
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status.rate_idx = 0; |
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} |
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if (ieee80211_is_beacon(hdr->frame_control) || |
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ieee80211_is_probe_resp(hdr->frame_control)) |
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status.boottime_ns = ktime_get_boottime_ns(); |
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memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status)); |
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if (ieee80211_is_beacon(hdr->frame_control)) { |
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wcn36xx_dbg(WCN36XX_DBG_BEACON, "beacon skb %p len %d fc %04x sn %d\n", |
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skb, skb->len, fc, sn); |
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wcn36xx_dbg_dump(WCN36XX_DBG_BEACON_DUMP, "SKB <<< ", |
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(char *)skb->data, skb->len); |
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} else { |
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wcn36xx_dbg(WCN36XX_DBG_RX, "rx skb %p len %d fc %04x sn %d\n", |
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skb, skb->len, fc, sn); |
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wcn36xx_dbg_dump(WCN36XX_DBG_RX_DUMP, "SKB <<< ", |
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(char *)skb->data, skb->len); |
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} |
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ieee80211_rx_irqsafe(wcn->hw, skb); |
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return 0; |
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} |
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static void wcn36xx_set_tx_pdu(struct wcn36xx_tx_bd *bd, |
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u32 mpdu_header_len, |
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u32 len, |
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u16 tid) |
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{ |
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bd->pdu.mpdu_header_len = mpdu_header_len; |
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bd->pdu.mpdu_header_off = sizeof(*bd); |
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bd->pdu.mpdu_data_off = bd->pdu.mpdu_header_len + |
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bd->pdu.mpdu_header_off; |
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bd->pdu.mpdu_len = len; |
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bd->pdu.tid = tid; |
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/* Use seq number generated by mac80211 */ |
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bd->pdu.bd_ssn = WCN36XX_TXBD_SSN_FILL_HOST; |
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} |
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static inline struct wcn36xx_vif *get_vif_by_addr(struct wcn36xx *wcn, |
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u8 *addr) |
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{ |
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struct wcn36xx_vif *vif_priv = NULL; |
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struct ieee80211_vif *vif = NULL; |
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list_for_each_entry(vif_priv, &wcn->vif_list, list) { |
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vif = wcn36xx_priv_to_vif(vif_priv); |
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if (memcmp(vif->addr, addr, ETH_ALEN) == 0) |
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return vif_priv; |
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} |
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wcn36xx_warn("vif %pM not found\n", addr); |
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return NULL; |
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} |
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static void wcn36xx_tx_start_ampdu(struct wcn36xx *wcn, |
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struct wcn36xx_sta *sta_priv, |
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struct sk_buff *skb) |
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{ |
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
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struct ieee80211_sta *sta; |
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u8 *qc, tid; |
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if (!conf_is_ht(&wcn->hw->conf)) |
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return; |
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sta = wcn36xx_priv_to_sta(sta_priv); |
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if (WARN_ON(!ieee80211_is_data_qos(hdr->frame_control))) |
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return; |
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if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO) |
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return; |
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qc = ieee80211_get_qos_ctl(hdr); |
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tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; |
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spin_lock(&sta_priv->ampdu_lock); |
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if (sta_priv->ampdu_state[tid] != WCN36XX_AMPDU_NONE) |
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goto out_unlock; |
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|
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if (sta_priv->non_agg_frame_ct++ >= WCN36XX_AMPDU_START_THRESH) { |
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sta_priv->ampdu_state[tid] = WCN36XX_AMPDU_START; |
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sta_priv->non_agg_frame_ct = 0; |
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ieee80211_start_tx_ba_session(sta, tid, 0); |
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} |
|
out_unlock: |
|
spin_unlock(&sta_priv->ampdu_lock); |
|
} |
|
|
|
static void wcn36xx_set_tx_data(struct wcn36xx_tx_bd *bd, |
|
struct wcn36xx *wcn, |
|
struct wcn36xx_vif **vif_priv, |
|
struct wcn36xx_sta *sta_priv, |
|
struct sk_buff *skb, |
|
bool bcast) |
|
{ |
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
|
struct ieee80211_vif *vif = NULL; |
|
struct wcn36xx_vif *__vif_priv = NULL; |
|
bool is_data_qos = ieee80211_is_data_qos(hdr->frame_control); |
|
u16 tid = 0; |
|
|
|
bd->bd_rate = WCN36XX_BD_RATE_DATA; |
|
|
|
/* |
|
* For not unicast frames mac80211 will not set sta pointer so use |
|
* self_sta_index instead. |
|
*/ |
|
if (sta_priv) { |
|
__vif_priv = sta_priv->vif; |
|
vif = wcn36xx_priv_to_vif(__vif_priv); |
|
|
|
bd->dpu_sign = sta_priv->ucast_dpu_sign; |
|
if (vif->type == NL80211_IFTYPE_STATION) { |
|
bd->sta_index = sta_priv->bss_sta_index; |
|
bd->dpu_desc_idx = sta_priv->bss_dpu_desc_index; |
|
} else if (vif->type == NL80211_IFTYPE_AP || |
|
vif->type == NL80211_IFTYPE_ADHOC || |
|
vif->type == NL80211_IFTYPE_MESH_POINT) { |
|
bd->sta_index = sta_priv->sta_index; |
|
bd->dpu_desc_idx = sta_priv->dpu_desc_index; |
|
} |
|
} else { |
|
__vif_priv = get_vif_by_addr(wcn, hdr->addr2); |
|
bd->sta_index = __vif_priv->self_sta_index; |
|
bd->dpu_desc_idx = __vif_priv->self_dpu_desc_index; |
|
bd->dpu_sign = __vif_priv->self_ucast_dpu_sign; |
|
} |
|
|
|
if (is_data_qos) { |
|
tid = ieee80211_get_tid(hdr); |
|
/* TID->QID is one-to-one mapping */ |
|
bd->queue_id = tid; |
|
} |
|
|
|
if (info->flags & IEEE80211_TX_INTFL_DONT_ENCRYPT || |
|
(sta_priv && !sta_priv->is_data_encrypted)) { |
|
bd->dpu_ne = 1; |
|
} |
|
|
|
if (ieee80211_is_any_nullfunc(hdr->frame_control)) { |
|
/* Don't use a regular queue for null packet (no ampdu) */ |
|
bd->queue_id = WCN36XX_TX_U_WQ_ID; |
|
} |
|
|
|
if (bcast) { |
|
bd->ub = 1; |
|
bd->ack_policy = 1; |
|
} |
|
*vif_priv = __vif_priv; |
|
|
|
wcn36xx_set_tx_pdu(bd, |
|
is_data_qos ? |
|
sizeof(struct ieee80211_qos_hdr) : |
|
sizeof(struct ieee80211_hdr_3addr), |
|
skb->len, tid); |
|
|
|
if (sta_priv && is_data_qos) |
|
wcn36xx_tx_start_ampdu(wcn, sta_priv, skb); |
|
} |
|
|
|
static void wcn36xx_set_tx_mgmt(struct wcn36xx_tx_bd *bd, |
|
struct wcn36xx *wcn, |
|
struct wcn36xx_vif **vif_priv, |
|
struct sk_buff *skb, |
|
bool bcast) |
|
{ |
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
|
struct wcn36xx_vif *__vif_priv = |
|
get_vif_by_addr(wcn, hdr->addr2); |
|
bd->sta_index = __vif_priv->self_sta_index; |
|
bd->dpu_desc_idx = __vif_priv->self_dpu_desc_index; |
|
bd->dpu_ne = 1; |
|
|
|
/* default rate for unicast */ |
|
if (ieee80211_is_mgmt(hdr->frame_control)) |
|
bd->bd_rate = (WCN36XX_BAND(wcn) == NL80211_BAND_5GHZ) ? |
|
WCN36XX_BD_RATE_CTRL : |
|
WCN36XX_BD_RATE_MGMT; |
|
else if (ieee80211_is_ctl(hdr->frame_control)) |
|
bd->bd_rate = WCN36XX_BD_RATE_CTRL; |
|
else |
|
wcn36xx_warn("frame control type unknown\n"); |
|
|
|
/* |
|
* In joining state trick hardware that probe is sent as |
|
* unicast even if address is broadcast. |
|
*/ |
|
if (__vif_priv->is_joining && |
|
ieee80211_is_probe_req(hdr->frame_control)) |
|
bcast = false; |
|
|
|
if (bcast) { |
|
/* broadcast */ |
|
bd->ub = 1; |
|
/* No ack needed not unicast */ |
|
bd->ack_policy = 1; |
|
bd->queue_id = WCN36XX_TX_B_WQ_ID; |
|
} else |
|
bd->queue_id = WCN36XX_TX_U_WQ_ID; |
|
*vif_priv = __vif_priv; |
|
|
|
wcn36xx_set_tx_pdu(bd, |
|
ieee80211_is_data_qos(hdr->frame_control) ? |
|
sizeof(struct ieee80211_qos_hdr) : |
|
sizeof(struct ieee80211_hdr_3addr), |
|
skb->len, WCN36XX_TID); |
|
} |
|
|
|
int wcn36xx_start_tx(struct wcn36xx *wcn, |
|
struct wcn36xx_sta *sta_priv, |
|
struct sk_buff *skb) |
|
{ |
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; |
|
struct wcn36xx_vif *vif_priv = NULL; |
|
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
|
unsigned long flags; |
|
bool is_low = ieee80211_is_data(hdr->frame_control); |
|
bool bcast = is_broadcast_ether_addr(hdr->addr1) || |
|
is_multicast_ether_addr(hdr->addr1); |
|
struct wcn36xx_tx_bd bd; |
|
int ret; |
|
|
|
memset(&bd, 0, sizeof(bd)); |
|
|
|
wcn36xx_dbg(WCN36XX_DBG_TX, |
|
"tx skb %p len %d fc %04x sn %d %s %s\n", |
|
skb, skb->len, __le16_to_cpu(hdr->frame_control), |
|
IEEE80211_SEQ_TO_SN(__le16_to_cpu(hdr->seq_ctrl)), |
|
is_low ? "low" : "high", bcast ? "bcast" : "ucast"); |
|
|
|
wcn36xx_dbg_dump(WCN36XX_DBG_TX_DUMP, "", skb->data, skb->len); |
|
|
|
bd.dpu_rf = WCN36XX_BMU_WQ_TX; |
|
|
|
if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) { |
|
wcn36xx_dbg(WCN36XX_DBG_DXE, "TX_ACK status requested\n"); |
|
|
|
spin_lock_irqsave(&wcn->dxe_lock, flags); |
|
if (wcn->tx_ack_skb) { |
|
spin_unlock_irqrestore(&wcn->dxe_lock, flags); |
|
wcn36xx_warn("tx_ack_skb already set\n"); |
|
return -EINVAL; |
|
} |
|
|
|
wcn->tx_ack_skb = skb; |
|
spin_unlock_irqrestore(&wcn->dxe_lock, flags); |
|
|
|
/* Only one at a time is supported by fw. Stop the TX queues |
|
* until the ack status gets back. |
|
*/ |
|
ieee80211_stop_queues(wcn->hw); |
|
|
|
/* TX watchdog if no TX irq or ack indication received */ |
|
mod_timer(&wcn->tx_ack_timer, jiffies + HZ / 10); |
|
|
|
/* Request ack indication from the firmware */ |
|
if (!(info->flags & IEEE80211_TX_CTL_NO_ACK)) |
|
bd.tx_comp = 1; |
|
} |
|
|
|
/* Data frames served first*/ |
|
if (is_low) |
|
wcn36xx_set_tx_data(&bd, wcn, &vif_priv, sta_priv, skb, bcast); |
|
else |
|
/* MGMT and CTRL frames are handeld here*/ |
|
wcn36xx_set_tx_mgmt(&bd, wcn, &vif_priv, skb, bcast); |
|
|
|
buff_to_be((u32 *)&bd, sizeof(bd)/sizeof(u32)); |
|
bd.tx_bd_sign = 0xbdbdbdbd; |
|
|
|
ret = wcn36xx_dxe_tx_frame(wcn, vif_priv, &bd, skb, is_low); |
|
if (ret && (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)) { |
|
/* If the skb has not been transmitted, |
|
* don't keep a reference to it. |
|
*/ |
|
spin_lock_irqsave(&wcn->dxe_lock, flags); |
|
wcn->tx_ack_skb = NULL; |
|
spin_unlock_irqrestore(&wcn->dxe_lock, flags); |
|
|
|
ieee80211_wake_queues(wcn->hw); |
|
} |
|
|
|
return ret; |
|
}
|
|
|