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| author | Ilan Peer <ilan.peer@intel.com> | 2020-09-30 16:31:12 +0300 |
|---|---|---|
| committer | Luca Coelho <luciano.coelho@intel.com> | 2020-10-01 22:00:55 +0300 |
| commit | b68bd2e3143adbcbc7afd2bc4974c1b988b87211 (patch) | |
| tree | 6343e3c096bb8ceae263dde804cbc3ddea0b9fe6 /drivers/net/wireless/intel/iwlwifi/mvm/constants.h | |
| parent | 3830a01c3bfac0c037d68fa0ce22d6f9e3ed2336 (diff) | |
| download | linux-b68bd2e3143adbcbc7afd2bc4974c1b988b87211.tar.gz linux-b68bd2e3143adbcbc7afd2bc4974c1b988b87211.tar.bz2 linux-b68bd2e3143adbcbc7afd2bc4974c1b988b87211.zip | |
iwlwifi: mvm: Add FTM initiator RTT smoothing logic
The overcome instabilities in the RTT results add smoothing logic
to the reported results. In short, the smoothing logic tracks the
RTT average of each responder for a period of time, and in case
a new RTT results is found to be a spur, the tracked RTT average
is reported instead of the current RTT measurement.
Smooth logic debug configuration using iwl-dbg-cfg.ini:
- MVM_FTM_INITIATOR_ENABLE_SMOOTH: Set to 1 to enable smoothing logic
(default=0).
- MVM_FTM_INITIATOR_SMOOTH_ALPHA: A value between 0 - 100, defining
the weight of the current RTT results vs. the RTT average tracked
based on the previous results. A value of 100 means use only the
current RTT results.
- MVM_FTM_INITIATOR_SMOOTH_AGE_SEC: The maximal time in seconds in which
the RTT average tracked based on previous results is considered valid.
- MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT: if the current RTT is positive
and below the RTT average by at least this value, report the average
RTT instead of the current one. In units of picoseconds.
- MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT: if the current RTT is positive
and above the RTT average by at least this value, report the average
RTT instead of the current one. In units of picoseconds.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200930161256.48a9cec2081b.Iaec1e29f738232adfe9e2ea8e9eb9b6ff0323ae1@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/constants.h')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/constants.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/constants.h b/drivers/net/wireless/intel/iwlwifi/mvm/constants.h index 426ca1f86500..2487871eac73 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/constants.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/constants.h @@ -159,5 +159,11 @@ #define IWL_MVM_PHY_FILTER_CHAIN_B 0 #define IWL_MVM_PHY_FILTER_CHAIN_C 0 #define IWL_MVM_PHY_FILTER_CHAIN_D 0 +#define IWL_MVM_FTM_INITIATOR_ENABLE_SMOOTH false +#define IWL_MVM_FTM_INITIATOR_SMOOTH_ALPHA 40 +/* 20016 pSec is 6 meter RTT, meaning 3 meter range */ +#define IWL_MVM_FTM_INITIATOR_SMOOTH_UNDERSHOOT 20016 +#define IWL_MVM_FTM_INITIATOR_SMOOTH_OVERSHOOT 20016 +#define IWL_MVM_FTM_INITIATOR_SMOOTH_AGE_SEC 2 #endif /* __MVM_CONSTANTS_H */ |