From a1ed4025765cceec180f57eab032c770140d6b8f Mon Sep 17 00:00:00 2001 From: Haim Dreyfuss Date: Mon, 1 Dec 2014 23:30:07 +0200 Subject: [PATCH] iwlwifi: mvm: Configure EBS scan ratio This configuration defines the ratio between number of scan iterations where EBS is involved to those where it is not. This configuration was left unconfigured due to inaccurate documentation. Fix documentation as well. Signed-off-by: Haim Dreyfuss Reviewed-by: Johannes Berg Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h | 7 +++++-- drivers/net/wireless/iwlwifi/mvm/scan.c | 6 ++++++ 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h b/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h index 1f2acf47bfb2..2d1a81c493f1 100644 --- a/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h +++ b/drivers/net/wireless/iwlwifi/mvm/fw-api-scan.h @@ -653,8 +653,11 @@ enum iwl_scan_channel_flags { }; /* iwl_scan_channel_opt - CHANNEL_OPTIMIZATION_API_S - * @flags: enum iwl_scan_channel_flgs - * @non_ebs_ratio: how many regular scan iteration before EBS + * @flags: enum iwl_scan_channel_flags + * @non_ebs_ratio: defines the ratio of number of scan iterations where EBS is + * involved. + * 1 - EBS is disabled. + * 2 - every second scan will be full scan(and so on). */ struct iwl_scan_channel_opt { __le16 flags; diff --git a/drivers/net/wireless/iwlwifi/mvm/scan.c b/drivers/net/wireless/iwlwifi/mvm/scan.c index 243367650b13..ed229a8daf4a 100644 --- a/drivers/net/wireless/iwlwifi/mvm/scan.c +++ b/drivers/net/wireless/iwlwifi/mvm/scan.c @@ -72,6 +72,8 @@ #define IWL_PLCP_QUIET_THRESH 1 #define IWL_ACTIVE_QUIET_TIME 10 +#define IWL_DENSE_EBS_SCAN_RATIO 5 +#define IWL_SPARSE_EBS_SCAN_RATIO 1 struct iwl_mvm_scan_params { u32 max_out_time; @@ -1296,10 +1298,14 @@ iwl_mvm_build_generic_unified_scan_cmd(struct iwl_mvm *mvm, cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); + cmd->channel_opt[0].non_ebs_ratio = + cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); cmd->channel_opt[1].flags = cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); + cmd->channel_opt[1].non_ebs_ratio = + cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); } if (iwl_mvm_rrm_scan_needed(mvm)) -- 2.20.1