1 files changed, 146 insertions, 53 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index 356b16f40e78..b31f0ffbbbf0 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -35,6 +35,7 @@
  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
+ * Copyright(c) 2018 Intel Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -85,6 +86,17 @@ enum iwl_mvm_traffic_load {
 #define IWL_SCAN_DWELL_PASSIVE		110
 #define IWL_SCAN_DWELL_FRAGMENTED	44
 #define IWL_SCAN_DWELL_EXTENDED		90
+#define IWL_SCAN_NUM_OF_FRAGS		3
+
+
+/* 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;
@@ -134,6 +146,9 @@ static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
 {
 	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
 
+	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
+		return (void *)&cmd->v8.data;
+
 	if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 		return (void *)&cmd->v7.data;
 
@@ -143,6 +158,23 @@ static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
 	return (void *)&cmd->v1.data;
 }
 
+static inline struct iwl_scan_umac_chan_param *
+iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm)
+{
+	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
+
+	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
+		return &cmd->v8.channel;
+
+	if (iwl_mvm_is_adaptive_dwell_supported(mvm))
+		return &cmd->v7.channel;
+
+	if (iwl_mvm_has_new_tx_api(mvm))
+		return &cmd->v6.channel;
+
+	return &cmd->v1.channel;
+}
+
 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
 {
 	if (mvm->scan_rx_ant != ANT_NONE)
@@ -1113,66 +1145,92 @@ static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
 				    struct iwl_scan_req_umac *cmd,
 				    struct iwl_mvm_scan_params *params)
 {
-	struct iwl_mvm_scan_timing_params *timing = &scan_timing[params->type];
+	struct iwl_mvm_scan_timing_params *timing, *hb_timing;
+	u8 active_dwell, passive_dwell;
 
-	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);
+	timing = &scan_timing[params->type];
+	active_dwell = params->measurement_dwell ?
+		params->measurement_dwell : IWL_SCAN_DWELL_ACTIVE;
+	passive_dwell = params->measurement_dwell ?
+		params->measurement_dwell : IWL_SCAN_DWELL_PASSIVE;
 
 	if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
-		if (params->measurement_dwell) {
-			cmd->v7.active_dwell = params->measurement_dwell;
-			cmd->v7.passive_dwell = params->measurement_dwell;
-		} else {
-			cmd->v7.active_dwell = IWL_SCAN_DWELL_ACTIVE;
-			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] =
 			cpu_to_le32(timing->max_out_time);
 		cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
 			cpu_to_le32(timing->suspend_time);
+
 		if (iwl_mvm_is_cdb_supported(mvm)) {
+			hb_timing = &scan_timing[params->type];
+
 			cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
-				cpu_to_le32(timing->max_out_time);
+				cpu_to_le32(hb_timing->max_out_time);
 			cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
-				cpu_to_le32(timing->suspend_time);
+				cpu_to_le32(hb_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;
+		if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
+			cmd->v7.active_dwell = active_dwell;
+			cmd->v7.passive_dwell = passive_dwell;
+			cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
+		} else {
+			cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
+			cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
+			if (iwl_mvm_is_cdb_supported(mvm)) {
+				cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
+					active_dwell;
+				cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
+					passive_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;
+		cmd->v1.extended_dwell = params->measurement_dwell ?
+			params->measurement_dwell : IWL_SCAN_DWELL_EXTENDED;
+		cmd->v1.active_dwell = active_dwell;
+		cmd->v1.passive_dwell = passive_dwell;
+		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 (iwl_mvm_is_cdb_supported(mvm)) {
+			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);
 	}
 }
 
@@ -1234,11 +1292,39 @@ 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)
+	    params->type != IWL_SCAN_TYPE_FRAGMENTED &&
+	    !iwl_mvm_is_adaptive_dwell_supported(mvm) &&
+	    !iwl_mvm_is_oce_supported(mvm))
 		flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
 
+	if (iwl_mvm_is_oce_supported(mvm)) {
+		if ((params->flags &
+		     NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE))
+			flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE;
+		/* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and
+		 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares
+		 * the same bit, we need to make sure that we use this bit here
+		 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be
+		 * used. */
+		if ((params->flags &
+		     NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
+		     !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm)))
+			flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP;
+		if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))
+			flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME;
+	}
+
 	return flags;
 }
 
@@ -1247,6 +1333,7 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 			     int type)
 {
 	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
+	struct iwl_scan_umac_chan_param *chan_param;
 	void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
 	struct iwl_scan_req_umac_tail *sec_part = cmd_data +
 		sizeof(struct iwl_scan_channel_cfg_umac) *
@@ -1254,8 +1341,11 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 	int uid, i;
 	u32 ssid_bitmap = 0;
 	u8 channel_flags = 0;
+	u16 gen_flags;
 	struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
 
+	chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
+
 	lockdep_assert_held(&mvm->mutex);
 
 	if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
@@ -1272,8 +1362,17 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 	mvm->scan_uid_status[uid] = type;
 
 	cmd->uid = cpu_to_le32(uid);
-	cmd->general_flags = cpu_to_le16(iwl_mvm_scan_umac_flags(mvm, params,
-								 vif));
+	gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
+	cmd->general_flags = cpu_to_le16(gen_flags);
+	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
+		if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
+			cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
+							IWL_SCAN_NUM_OF_FRAGS;
+		if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
+			cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
+							IWL_SCAN_NUM_OF_FRAGS;
+	}
+
 	cmd->scan_start_mac_id = scan_vif->id;
 
 	if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
@@ -1284,16 +1383,8 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 				IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
 				IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
 
-	if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
-		cmd->v7.channel_flags = channel_flags;
-		cmd->v7.n_channels = params->n_channels;
-	} else if (iwl_mvm_has_new_tx_api(mvm)) {
-		cmd->v6.channel_flags = channel_flags;
-		cmd->v6.n_channels = params->n_channels;
-	} else {
-		cmd->v1.channel_flags = channel_flags;
-		cmd->v1.n_channels = params->n_channels;
-	}
+	chan_param->flags = channel_flags;
+	chan_param->count = params->n_channels;
 
 	iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap);
 
@@ -1732,7 +1823,9 @@ int iwl_mvm_scan_size(struct iwl_mvm *mvm)
 {
 	int base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
 
-	if (iwl_mvm_is_adaptive_dwell_supported(mvm))
+	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
+		base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
+	else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 		base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
 	else if (iwl_mvm_has_new_tx_api(mvm))
 		base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;