iwlwifi: mvm: add support for oce

Add support for Optimized Connectivity Experience (OCE).  Get
capabilities from the fw, expose them with nl80211, and enable them in
UMAC scan if the relevant nl80211 flags are set by the userspace.

Signed-off-by: Roee Zamir <roee.zamir@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h b/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h
index 3bfc657f6b4214da88f63a8bab326855dea2afca..620862c4c79bb21134b1bb68f2dceaad5906421a 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h
@@ -579,8 +579,14 @@ enum iwl_umac_scan_general_flags {
        IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED             = BIT(8),
        IWL_UMAC_SCAN_GEN_FLAGS_MATCH                   = BIT(9),
        IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL          = BIT(10),
+       /* Extended dwell is obselete when adaptive dwell is used, making this
+        * bit reusable. Hence, probe request defer is used only when adaptive
+        * dwell is supported. */
+       IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP     = BIT(10),
        IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED        = BIT(11),
        IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL          = BIT(13),
+       IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME           = BIT(14),
+       IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE   = BIT(15),
 };
 
 /**

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/file.h b/drivers/net/wireless/intel/iwlwifi/fw/file.h
index 2cb303c5c42e259083e43ebe66360d9263a0dbb2..f8c2dac12c665b3bdca6b461287db15d0cc909a4 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/fw/file.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/file.h
@@ -265,6 +265,7 @@ enum iwl_ucode_tlv_api {
        IWL_UCODE_TLV_API_NAN2_VER2             = (__force iwl_ucode_tlv_api_t)31,
        /* API Set 1 */
        IWL_UCODE_TLV_API_ADAPTIVE_DWELL        = (__force iwl_ucode_tlv_api_t)32,
+       IWL_UCODE_TLV_API_OCE                   = (__force iwl_ucode_tlv_api_t)33,
        IWL_UCODE_TLV_API_NEW_BEACON_TEMPLATE   = (__force iwl_ucode_tlv_api_t)34,
        IWL_UCODE_TLV_API_NEW_RX_STATS          = (__force iwl_ucode_tlv_api_t)35,
        IWL_UCODE_TLV_API_QUOTA_LOW_LATENCY     = (__force iwl_ucode_tlv_api_t)38,

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 7152fdc00fb17cb4ef5c173f72c829c706e13231..82dc9dec416064e137d9edd48751c4bf2ad600f9 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -661,6 +661,17 @@ int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
                                      NL80211_EXT_FEATURE_SET_SCAN_DWELL);
        }
 
+       if (iwl_mvm_is_oce_supported(mvm)) {
+               wiphy_ext_feature_set(hw->wiphy,
+                       NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP);
+               wiphy_ext_feature_set(hw->wiphy,
+                       NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME);
+               wiphy_ext_feature_set(hw->wiphy,
+                       NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION);
+               wiphy_ext_feature_set(hw->wiphy,
+                       NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE);
+       }
+
        mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
 
 #ifdef CONFIG_PM_SLEEP

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index 625b238a3f0a71c72897eb97a00be7ffb2ddddf1..bd87cdb36fb2a5d35eba52b6ed1f22bf37e0f681 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -1155,6 +1155,12 @@ static inline bool iwl_mvm_is_adaptive_dwell_supported(struct iwl_mvm *mvm)
                          IWL_UCODE_TLV_API_ADAPTIVE_DWELL);
 }
 
+static inline bool iwl_mvm_is_oce_supported(struct iwl_mvm *mvm)
+{
+       /* OCE should never be enabled for LMAC scan FWs */
+       return fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_OCE);
+}
+
 static inline bool iwl_mvm_enter_d0i3_on_suspend(struct iwl_mvm *mvm)
 {
        /* For now we only use this mode to differentiate between

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index f910098e9531942618050fd29437e3d44c3527aa..b756d9d0199fe04efcc29f8e7aee70ed7977f061 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -1268,9 +1268,28 @@ static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
         */
        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;
 }