diff options
| author | Sylvain Roger Rieunier <sylvain.roger.rieunier@gmail.com> | 2014-02-27 14:36:06 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2014-03-03 15:35:55 -0500 |
| commit | 727b662c2b3476840b7fef7a44685fb0a0898c48 (patch) | |
| tree | a4d940bba67bc757bb4fc9f2be1ea43d6db22ca3 /drivers/net | |
| parent | c8e4955653a470ece7bf580c84fc88eb58cc9850 (diff) | |
ath9k: fix invalid max frame length
According to 802.11n-2012 standard in paragraph PPDU Fromat(20.3.2) HT-mixed
format Hearder PPDU contains : L_STF, L_LTF, L_SIG, HT_SIG, HT_STF, HT_LTF
they are symbols in the preamble, there are in time unit(us) that's for why
it can't be computed in bytes
Signed-off-by: Sylvain ROGER RIEUNIER <sylvain.roger.rieunier@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/xmit.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 8f28711cfd4e..306ea322c65d 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -1040,11 +1040,11 @@ static int ath_max_framelen(int usec, int mcs, bool ht40, bool sgi) int symbols, bits; int bytes = 0; + usec -= L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams); symbols = sgi ? TIME_SYMBOLS_HALFGI(usec) : TIME_SYMBOLS(usec); bits = symbols * bits_per_symbol[mcs % 8][ht40] * streams; bits -= OFDM_PLCP_BITS; bytes = bits / 8; - bytes -= L_STF + L_LTF + L_SIG + HT_SIG + HT_STF + HT_LTF(streams); if (bytes > 65532) bytes = 65532; |