diff options
| author | Vamsi Krishna <vamsin@codeaurora.org> | 2020-10-29 20:34:57 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2020-11-06 10:00:47 +0100 |
| commit | 9c97c88d2f4b221d99491c3196da42004c195fb5 (patch) | |
| tree | 0697e77e59233d43bc03a9bd878ea177257ceb42 /net/wireless | |
| parent | 9f0ffa418483938d25a15f6ad3891389f333bc59 (diff) | |
| download | linux-next-9c97c88d2f4b221d99491c3196da42004c195fb5.tar.gz | |
cfg80211: Add support to calculate and report 4096-QAM HE rates
Drivers supporting 4096-QAM rates as a vendor extension in HE mode need
to update the correct rate info to userspace while using 4096-QAM (MCS12
and MCS13) in HE mode. Add support to calculate bitrates of HE-MCS12 and
HE-MCS13 which represent the 4096-QAM modulation schemes. The MCS12 and
MCS13 bitrates are defined in IEEE P802.11be/D0.1.
In addition, scale up the bitrates by 3*2048 in order to accommodate
calculations for the new MCS12 and MCS13 rates without losing fraction
values.
Signed-off-by: Vamsi Krishna <vamsin@codeaurora.org>
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20201029183457.7005-1-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/util.c | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/net/wireless/util.c b/net/wireless/util.c index f01746894a4e..5b6c80ae564a 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -1276,20 +1276,22 @@ static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate) static u32 cfg80211_calculate_bitrate_he(struct rate_info *rate) { -#define SCALE 2048 - u16 mcs_divisors[12] = { - 34133, /* 16.666666... */ - 17067, /* 8.333333... */ - 11378, /* 5.555555... */ - 8533, /* 4.166666... */ - 5689, /* 2.777777... */ - 4267, /* 2.083333... */ - 3923, /* 1.851851... */ - 3413, /* 1.666666... */ - 2844, /* 1.388888... */ - 2560, /* 1.250000... */ - 2276, /* 1.111111... */ - 2048, /* 1.000000... */ +#define SCALE 6144 + u32 mcs_divisors[14] = { + 102399, /* 16.666666... */ + 51201, /* 8.333333... */ + 34134, /* 5.555555... */ + 25599, /* 4.166666... */ + 17067, /* 2.777777... */ + 12801, /* 2.083333... */ + 11769, /* 1.851851... */ + 10239, /* 1.666666... */ + 8532, /* 1.388888... */ + 7680, /* 1.250000... */ + 6828, /* 1.111111... */ + 6144, /* 1.000000... */ + 5690, /* 0.926106... */ + 5120, /* 0.833333... */ }; u32 rates_160M[3] = { 960777777, 907400000, 816666666 }; u32 rates_969[3] = { 480388888, 453700000, 408333333 }; @@ -1301,7 +1303,7 @@ static u32 cfg80211_calculate_bitrate_he(struct rate_info *rate) u64 tmp; u32 result; - if (WARN_ON_ONCE(rate->mcs > 11)) + if (WARN_ON_ONCE(rate->mcs > 13)) return 0; if (WARN_ON_ONCE(rate->he_gi > NL80211_RATE_INFO_HE_GI_3_2)) |