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nl80211/cfg80211: add VHT MCS support

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Add support for reporting and calculating VHT MCSes.

Note that I'm not completely sure that the bitrate
calculations are correct, nor that they can't be
simplified.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg
2012-11-09 14:56:41 +01:00
parent 4bf88530be
commit db9c64cf8d
4 changed files with 144 additions and 24 deletions
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24
include/net/cfg80211.h
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@@ -662,16 +662,24 @@ enum station_info_flags {
* Used by the driver to indicate the specific rate transmission
* type for 802.11n transmissions.
*
* @RATE_INFO_FLAGS_MCS: @tx_bitrate_mcs filled
* @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 Mhz width transmission
* @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS
* @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS
* @RATE_INFO_FLAGS_40_MHZ_WIDTH: 40 MHz width transmission
* @RATE_INFO_FLAGS_80_MHZ_WIDTH: 80 MHz width transmission
* @RATE_INFO_FLAGS_80P80_MHZ_WIDTH: 80+80 MHz width transmission
* @RATE_INFO_FLAGS_160_MHZ_WIDTH: 160 MHz width transmission
* @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval
* @RATE_INFO_FLAGS_60G: 60gHz MCS
* @RATE_INFO_FLAGS_60G: 60GHz MCS
*/
enum rate_info_flags {
RATE_INFO_FLAGS_MCS = 1<<0,
RATE_INFO_FLAGS_40_MHZ_WIDTH = 1<<1,
RATE_INFO_FLAGS_SHORT_GI = 1<<2,
RATE_INFO_FLAGS_60G = 1<<3,
RATE_INFO_FLAGS_MCS = BIT(0),
RATE_INFO_FLAGS_VHT_MCS = BIT(1),
RATE_INFO_FLAGS_40_MHZ_WIDTH = BIT(2),
RATE_INFO_FLAGS_80_MHZ_WIDTH = BIT(3),
RATE_INFO_FLAGS_80P80_MHZ_WIDTH = BIT(4),
RATE_INFO_FLAGS_160_MHZ_WIDTH = BIT(5),
RATE_INFO_FLAGS_SHORT_GI = BIT(6),
RATE_INFO_FLAGS_60G = BIT(7),
};
/**
@@ -682,11 +690,13 @@ enum rate_info_flags {
* @flags: bitflag of flags from &enum rate_info_flags
* @mcs: mcs index if struct describes a 802.11n bitrate
* @legacy: bitrate in 100kbit/s for 802.11abg
* @nss: number of streams (VHT only)
*/
struct rate_info {
u8 flags;
u8 mcs;
u16 legacy;
u8 nss;
};
/**