diff options
| author |   Eliad Peller <eliad@wizery.com> | 2014-03-13 17:21:36 +0200 |
|---|---|---|
| committer |   Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2014-04-13 09:23:51 +0300 |
| commit | 2fd647f85daa27d623c176f7afd087d8a843a685 (patch) | |
| tree | 95dd70ad643fcd5d08600c819fec122f67822ae5 /drivers/net/wireless/iwlwifi/mvm/rs.h | |
| parent | iwlwifi: mvm: add lq_cmd/tx_resp reduced_tpc field (diff) | |
| download | linux-dev-2fd647f85daa27d623c176f7afd087d8a843a685.tar.xz linux-dev-2fd647f85daa27d623c176f7afd087d8a843a685.zip | |
iwlwifi: mvm: add ATPC implementation
Implement Adaptive Tx Power Control algorithm.
ATPC basically tries to decrease the tx power
as much as possible while the throughput is
not being hurt.
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/rs.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/rs.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.h b/drivers/net/wireless/iwlwifi/mvm/rs.h index 3332b396011e..d8b0345b3876 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rs.h +++ b/drivers/net/wireless/iwlwifi/mvm/rs.h @@ -157,6 +157,13 @@ enum { #define IWL_RATE_INCREASE_TH 6400 /* 50% */ #define RS_SR_FORCE_DECREASE 1920 /* 15% */ +#define TPC_SR_FORCE_INCREASE 9600 /* 75% */ +#define TPC_SR_NO_INCREASE 10880 /* 85% */ +#define TPC_TX_POWER_STEP 3 +#define TPC_MAX_REDUCTION 15 +#define TPC_NO_REDUCTION 0 +#define TPC_INVALID 0xff + #define LINK_QUAL_AGG_TIME_LIMIT_DEF (4000) /* 4 milliseconds */ #define LINK_QUAL_AGG_TIME_LIMIT_MAX (8000) #define LINK_QUAL_AGG_TIME_LIMIT_MIN (100) @@ -279,6 +286,8 @@ struct iwl_scale_tbl_info { enum rs_column column; const u16 *expected_tpt; /* throughput metrics; expected_tpt_G, etc. */ struct iwl_rate_scale_data win[IWL_RATE_COUNT]; /* rate histories */ + /* per txpower-reduction history */ + struct iwl_rate_scale_data tpc_win[TPC_MAX_REDUCTION + 1]; }; enum { @@ -337,6 +346,9 @@ struct iwl_lq_sta { u32 last_rate_n_flags; /* packets destined for this STA are aggregated */ u8 is_agg; + + /* tx power reduce for this sta */ + int tpc_reduce; }; /* Initialize station's rate scaling information after adding station */ |