Instead of increasing bits_per_symbol for supporting more streams, keep
it single-stream only and multiply the values by the numer of streams.
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/xmit.c | 19 ++++++-------------
1 files changed, 6 insertions(+), 13 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 4078982..2237658 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -34,7 +34,7 @@
#define OFDM_SIFS_TIME 16
-static u32 bits_per_symbol[][2] = {
+static u16 bits_per_symbol[][2] = {
/* 20MHz 40MHz */
{ 26, 54 }, /* 0: BPSK */
{ 52, 108 }, /* 1: QPSK 1/2 */
@@ -44,14 +44,6 @@ static u32 bits_per_symbol[][2] = {
{ 208, 432 }, /* 5: 64-QAM 2/3 */
{ 234, 486 }, /* 6: 64-QAM 3/4 */
{ 260, 540 }, /* 7: 64-QAM 5/6 */
- { 52, 108 }, /* 8: BPSK */
- { 104, 216 }, /* 9: QPSK 1/2 */
- { 156, 324 }, /* 10: QPSK 3/4 */
- { 208, 432 }, /* 11: 16-QAM 1/2 */
- { 312, 648 }, /* 12: 16-QAM 3/4 */
- { 416, 864 }, /* 13: 64-QAM 2/3 */
- { 468, 972 }, /* 14: 64-QAM 3/4 */
- { 520, 1080 }, /* 15: 64-QAM 5/6 */
};
#define IS_HT_RATE(_rate) ((_rate) & 0x80)
@@ -601,7 +593,7 @@ static int ath_compute_num_delims(struct ath_softc *sc, struct ath_atx_tid *tid,
u32 nsymbits, nsymbols;
u16 minlen;
u8 flags, rix;
- int width, half_gi, ndelim, mindelim;
+ int width, streams, half_gi, ndelim, mindelim;
/* Select standard number of delimiters based on frame length alone */
ndelim = ATH_AGGR_GET_NDELIM(frmlen);
@@ -641,7 +633,8 @@ static int ath_compute_num_delims(struct ath_softc *sc, struct ath_atx_tid *tid,
if (nsymbols == 0)
nsymbols = 1;
- nsymbits = bits_per_symbol[rix][width];
+ streams = HT_RC_2_STREAMS(rix);
+ nsymbits = bits_per_symbol[rix % 8][width] * streams;
minlen = (nsymbols * nsymbits) / BITS_PER_BYTE;
if (frmlen < minlen) {
@@ -1533,8 +1526,9 @@ static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, struct ath_buf *bf,
pktlen = bf_isaggr(bf) ? bf->bf_al : bf->bf_frmlen;
/* find number of symbols: PLCP + data */
+ streams = HT_RC_2_STREAMS(rix);
nbits = (pktlen << 3) + OFDM_PLCP_BITS;
- nsymbits = bits_per_symbol[rix][width];
+ nsymbits = bits_per_symbol[rix % 8][width] * streams;
nsymbols = (nbits + nsymbits - 1) / nsymbits;
if (!half_gi)
@@ -1543,7 +1537,6 @@ static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, struct ath_buf *bf,
duration = SYMBOL_TIME_HALFGI(nsymbols);
/* addup duration for legacy/ht training and signal fields */
- streams = HT_RC_2_STREAMS(rix);
duration += L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams);
return duration;
--
1.6.4.2
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