From c1a7515393e403758a684fd0a2372af466675b15 Mon Sep 17 00:00:00 2001
From: "Zamir, Roee" <roee.zamir@intel.com>
Date: Thu, 30 Mar 2017 16:34:51 +0300
Subject: [PATCH] iwlwifi: mvm: add adaptive dwell support
Git-commit: c1a7515393e403758a684fd0a2372af466675b15
Patch-mainline: v4.17-rc1
References: FATE#326294
Update the scan command API with support for adaptive dwell. Adaptive
dwell is a type of scan that dynamically changes the time it remains
on each channel listening for beacons or probe responses.
Signed-off-by: Roee Zamir <roee.zamir@intel.com>
Signed-off-by: Beni Lev <beni.lev@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
.../wireless/intel/iwlwifi/mvm/constants.h | 2 +
drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 98 ++++++++++++-------
2 files changed, 67 insertions(+), 33 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/constants.h b/drivers/net/wireless/intel/iwlwifi/mvm/constants.h
index 976640fed334..96b52a275ee3 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/constants.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/constants.h
@@ -110,6 +110,8 @@
#define IWL_MVM_SW_TX_CSUM_OFFLOAD 0
#define IWL_MVM_HW_CSUM_DISABLE 0
#define IWL_MVM_PARSE_NVM 0
+#define IWL_MVM_ADWELL_ENABLE 1
+#define IWL_MVM_ADWELL_MAX_BUDGET 0
#define IWL_MVM_RS_NUM_TRY_BEFORE_ANT_TOGGLE 1
#define IWL_MVM_RS_HT_VHT_RETRIES_PER_RATE 2
#define IWL_MVM_RS_HT_VHT_RETRIES_PER_RATE_TW 1
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index 356b16f40e78..f910098e9531 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -86,6 +86,15 @@ enum iwl_mvm_traffic_load {
#define IWL_SCAN_DWELL_FRAGMENTED 44
#define IWL_SCAN_DWELL_EXTENDED 90
+/* adaptive dwell max budget time [TU] for full scan */
+#define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300
+/* adaptive dwell max budget time [TU] for directed scan */
+#define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100
+/* adaptive dwell default APs number */
+#define IWL_SCAN_ADWELL_DEFAULT_N_APS 2
+/* adaptive dwell default APs number in social channels (1, 6, 11) */
+#define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10
+
struct iwl_mvm_scan_timing_params {
u32 suspend_time;
u32 max_out_time;
@@ -1115,11 +1124,6 @@ static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
{
struct iwl_mvm_scan_timing_params *timing = &scan_timing[params->type];
- if (iwl_mvm_is_regular_scan(params))
- cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
- else
- cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2);
-
if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
if (params->measurement_dwell) {
cmd->v7.active_dwell = params->measurement_dwell;
@@ -1129,6 +1133,21 @@ static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
cmd->v7.passive_dwell = IWL_SCAN_DWELL_PASSIVE;
}
cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
+ cmd->v7.adwell_default_n_aps_social =
+ IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
+ cmd->v7.adwell_default_n_aps =
+ IWL_SCAN_ADWELL_DEFAULT_N_APS;
+
+ /* if custom max budget was configured with debugfs */
+ if (IWL_MVM_ADWELL_MAX_BUDGET)
+ cmd->v7.adwell_max_budget =
+ cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
+ else if (params->ssids && params->ssids[0].ssid_len)
+ cmd->v7.adwell_max_budget =
+ cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
+ else
+ cmd->v7.adwell_max_budget =
+ cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] =
@@ -1136,43 +1155,47 @@ static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
cpu_to_le32(timing->suspend_time);
if (iwl_mvm_is_cdb_supported(mvm)) {
- cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
+ cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
cpu_to_le32(timing->max_out_time);
- cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
+ cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
cpu_to_le32(timing->suspend_time);
}
-
- return;
- }
-
- if (params->measurement_dwell) {
- cmd->v1.active_dwell = params->measurement_dwell;
- cmd->v1.passive_dwell = params->measurement_dwell;
- cmd->v1.extended_dwell = params->measurement_dwell;
} else {
- cmd->v1.active_dwell = IWL_SCAN_DWELL_ACTIVE;
- cmd->v1.passive_dwell = IWL_SCAN_DWELL_PASSIVE;
- cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED;
- }
- cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
-
- if (iwl_mvm_has_new_tx_api(mvm)) {
- cmd->v6.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
- cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
- cpu_to_le32(timing->max_out_time);
- cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
- cpu_to_le32(timing->suspend_time);
+ if (params->measurement_dwell) {
+ cmd->v1.active_dwell = params->measurement_dwell;
+ cmd->v1.passive_dwell = params->measurement_dwell;
+ cmd->v1.extended_dwell = params->measurement_dwell;
+ } else {
+ cmd->v1.active_dwell = IWL_SCAN_DWELL_ACTIVE;
+ cmd->v1.passive_dwell = IWL_SCAN_DWELL_PASSIVE;
+ cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED;
+ }
+ cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
if (iwl_mvm_is_cdb_supported(mvm)) {
+ struct iwl_mvm_scan_timing_params *hb_timing =
+ &scan_timing[params->type];
+
cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
- cpu_to_le32(timing->max_out_time);
+ cpu_to_le32(hb_timing->max_out_time);
cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
+ cpu_to_le32(hb_timing->suspend_time);
+ }
+
+ if (iwl_mvm_has_new_tx_api(mvm)) {
+ cmd->v6.scan_priority =
+ cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
+ cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
+ cpu_to_le32(timing->max_out_time);
+ cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
+ cpu_to_le32(timing->suspend_time);
+ } else {
+ cmd->v1.scan_priority =
+ cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
+ cmd->v1.max_out_time =
+ cpu_to_le32(timing->max_out_time);
+ cmd->v1.suspend_time =
cpu_to_le32(timing->suspend_time);
}
- } else {
- cmd->v1.max_out_time = cpu_to_le32(timing->max_out_time);
- cmd->v1.suspend_time = cpu_to_le32(timing->suspend_time);
- cmd->v1.scan_priority =
- cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
}
}
@@ -1234,6 +1257,15 @@ static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
+ if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE &&
+ vif->type != NL80211_IFTYPE_P2P_DEVICE)
+ flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL;
+
+ /*
+ * Extended dwell is relevant only for low band to start with, as it is
+ * being used for social channles only (1, 6, 11), so we can check
+ * only scan type on low band also for CDB.
+ */
if (iwl_mvm_is_regular_scan(params) &&
vif->type != NL80211_IFTYPE_P2P_DEVICE &&
params->type != IWL_SCAN_TYPE_FRAGMENTED)
--
2.19.2