mirror of https://github.com/hak5/openwrt.git
65 lines
2.2 KiB
Diff
65 lines
2.2 KiB
Diff
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--- a/drivers/net/wireless/ath/ath9k/xmit.c
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+++ b/drivers/net/wireless/ath/ath9k/xmit.c
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@@ -34,7 +34,7 @@
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#define OFDM_SIFS_TIME 16
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-static u32 bits_per_symbol[][2] = {
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+static u16 bits_per_symbol[][2] = {
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/* 20MHz 40MHz */
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{ 26, 54 }, /* 0: BPSK */
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{ 52, 108 }, /* 1: QPSK 1/2 */
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@@ -44,14 +44,6 @@ static u32 bits_per_symbol[][2] = {
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{ 208, 432 }, /* 5: 64-QAM 2/3 */
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{ 234, 486 }, /* 6: 64-QAM 3/4 */
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{ 260, 540 }, /* 7: 64-QAM 5/6 */
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- { 52, 108 }, /* 8: BPSK */
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- { 104, 216 }, /* 9: QPSK 1/2 */
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- { 156, 324 }, /* 10: QPSK 3/4 */
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- { 208, 432 }, /* 11: 16-QAM 1/2 */
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- { 312, 648 }, /* 12: 16-QAM 3/4 */
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- { 416, 864 }, /* 13: 64-QAM 2/3 */
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- { 468, 972 }, /* 14: 64-QAM 3/4 */
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- { 520, 1080 }, /* 15: 64-QAM 5/6 */
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};
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#define IS_HT_RATE(_rate) ((_rate) & 0x80)
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@@ -601,7 +593,7 @@ static int ath_compute_num_delims(struct
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u32 nsymbits, nsymbols;
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u16 minlen;
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u8 flags, rix;
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- int width, half_gi, ndelim, mindelim;
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+ int width, streams, half_gi, ndelim, mindelim;
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/* Select standard number of delimiters based on frame length alone */
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ndelim = ATH_AGGR_GET_NDELIM(frmlen);
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@@ -641,7 +633,8 @@ static int ath_compute_num_delims(struct
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if (nsymbols == 0)
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nsymbols = 1;
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- nsymbits = bits_per_symbol[rix][width];
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+ streams = HT_RC_2_STREAMS(rix);
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+ nsymbits = bits_per_symbol[rix % 8][width] * streams;
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minlen = (nsymbols * nsymbits) / BITS_PER_BYTE;
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if (frmlen < minlen) {
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@@ -1533,8 +1526,9 @@ static u32 ath_pkt_duration(struct ath_s
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pktlen = bf_isaggr(bf) ? bf->bf_al : bf->bf_frmlen;
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/* find number of symbols: PLCP + data */
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+ streams = HT_RC_2_STREAMS(rix);
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nbits = (pktlen << 3) + OFDM_PLCP_BITS;
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- nsymbits = bits_per_symbol[rix][width];
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+ nsymbits = bits_per_symbol[rix % 8][width] * streams;
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nsymbols = (nbits + nsymbits - 1) / nsymbits;
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if (!half_gi)
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@@ -1543,7 +1537,6 @@ static u32 ath_pkt_duration(struct ath_s
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duration = SYMBOL_TIME_HALFGI(nsymbols);
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/* addup duration for legacy/ht training and signal fields */
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- streams = HT_RC_2_STREAMS(rix);
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duration += L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams);
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return duration;
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