wifi: ath11k: Add support to configure FTM responder role

Fine Timing Measurement(FTM) support is used to measure round trip
time between two nodes.

Enable FTM responder feature using hw_params on supported device.
Since FTM functionality is offloaded to firmware, adding the
interface allows user space to enable or disable FTM responder.
Also add support for advertising the same in extended capabilities.

QCA6390, WCN6855 and WCN6750 do not support this feature.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1

Signed-off-by: Sowmiya Sree Elavalagan <quic_ssreeela@quicinc.com>
Signed-off-by: Raj Kumar Bhagat <quic_rajkbhag@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20221220044435.10506-1-quic_rajkbhag@quicinc.com

diff --git a/drivers/net/wireless/ath/ath11k/core.c b/drivers/net/wireless/ath/ath11k/core.c
index 498310e38d44d4778d95f9e945fe025fc608ba24..75fdbe4ef83a4b555f0b333b40e732794a6781ad 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/core.c
+++ b/drivers/net/wireless/ath/ath11k/core.c
@@ -116,6 +116,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .tcl_ring_retry = true,
                .tx_ring_size = DP_TCL_DATA_RING_SIZE,
                .smp2p_wow_exit = false,
+               .ftm_responder = true,
        },
        {
                .hw_rev = ATH11K_HW_IPQ6018_HW10,
@@ -198,6 +199,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .tx_ring_size = DP_TCL_DATA_RING_SIZE,
                .smp2p_wow_exit = false,
                .support_fw_mac_sequence = false,
+               .ftm_responder = true,
        },
        {
                .name = "qca6390 hw2.0",
@@ -282,6 +284,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .tx_ring_size = DP_TCL_DATA_RING_SIZE,
                .smp2p_wow_exit = false,
                .support_fw_mac_sequence = true,
+               .ftm_responder = false,
        },
        {
                .name = "qcn9074 hw1.0",
@@ -363,6 +366,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .tx_ring_size = DP_TCL_DATA_RING_SIZE,
                .smp2p_wow_exit = false,
                .support_fw_mac_sequence = false,
+               .ftm_responder = true,
        },
        {
                .name = "wcn6855 hw2.0",
@@ -447,6 +451,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .tx_ring_size = DP_TCL_DATA_RING_SIZE,
                .smp2p_wow_exit = false,
                .support_fw_mac_sequence = true,
+               .ftm_responder = false,
        },
        {
                .name = "wcn6855 hw2.1",
@@ -529,6 +534,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .tx_ring_size = DP_TCL_DATA_RING_SIZE,
                .smp2p_wow_exit = false,
                .support_fw_mac_sequence = true,
+               .ftm_responder = false,
        },
        {
                .name = "wcn6750 hw1.0",
@@ -609,6 +615,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .tx_ring_size = DP_TCL_DATA_RING_SIZE_WCN6750,
                .smp2p_wow_exit = true,
                .support_fw_mac_sequence = true,
+               .ftm_responder = false,
        },
        {
                .hw_rev = ATH11K_HW_IPQ5018_HW10,
@@ -688,6 +695,7 @@ static const struct ath11k_hw_params ath11k_hw_params[] = {
                .tx_ring_size = DP_TCL_DATA_RING_SIZE,
                .smp2p_wow_exit = false,
                .support_fw_mac_sequence = false,
+               .ftm_responder = true,
        },
 };
 

diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h
index beb552108ac3d46cdcb4fee833874e0151401218..b01c806ffa2394c9ab1abe896df192c35bb10da8 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/core.h
+++ b/drivers/net/wireless/ath/ath11k/core.h
@@ -346,6 +346,7 @@ struct ath11k_vif {
 
        bool is_started;
        bool is_up;
+       bool ftm_responder;
        bool spectral_enabled;
        bool ps;
        u32 aid;

diff --git a/drivers/net/wireless/ath/ath11k/hw.h b/drivers/net/wireless/ath/ath11k/hw.h
index 9f45d061d82652b186d9fbe3266c20c09b8eb887..0be4e12323842b7d4f9f5aa11545c553594e72a6 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/hw.h
+++ b/drivers/net/wireless/ath/ath11k/hw.h
@@ -224,6 +224,7 @@ struct ath11k_hw_params {
        u32 tx_ring_size;
        bool smp2p_wow_exit;
        bool support_fw_mac_sequence;
+       bool ftm_responder;
 };
 
 struct ath11k_hw_ops {

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index b198edba76eb6fdfa7bba92ab5df40d7e71452b9..767a2a39ad6a10a62a1d74699b934ee56db83019 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -3110,7 +3110,7 @@ static void ath11k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
        u16 bitrate;
        int ret = 0;
        u8 rateidx;
-       u32 rate;
+       u32 rate, param;
        u32 ipv4_cnt;
 
        mutex_lock(&ar->conf_mutex);
@@ -3412,6 +3412,20 @@ static void ath11k_mac_op_bss_info_changed(struct ieee80211_hw *hw,
                }
        }
 
+       if (changed & BSS_CHANGED_FTM_RESPONDER &&
+           arvif->ftm_responder != info->ftm_responder &&
+           ar->ab->hw_params.ftm_responder &&
+           (vif->type == NL80211_IFTYPE_AP ||
+            vif->type == NL80211_IFTYPE_MESH_POINT)) {
+               arvif->ftm_responder = info->ftm_responder;
+               param = WMI_VDEV_PARAM_ENABLE_DISABLE_RTT_RESPONDER_ROLE;
+               ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id, param,
+                                                   arvif->ftm_responder);
+               if (ret)
+                       ath11k_warn(ar->ab, "Failed to set ftm responder %i: %d\n",
+                                   arvif->vdev_id, ret);
+       }
+
        if (changed & BSS_CHANGED_FILS_DISCOVERY ||
            changed & BSS_CHANGED_UNSOL_BCAST_PROBE_RESP)
                ath11k_mac_fils_discovery(arvif, info);
@@ -9113,6 +9127,10 @@ static int __ath11k_mac_register(struct ath11k *ar)
        wiphy_ext_feature_set(ar->hw->wiphy,
                              NL80211_EXT_FEATURE_SET_SCAN_DWELL);
 
+       if (ab->hw_params.ftm_responder)
+               wiphy_ext_feature_set(ar->hw->wiphy,
+                                     NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER);
+
        ath11k_reg_init(ar);
 
        if (!test_bit(ATH11K_FLAG_RAW_MODE, &ab->dev_flags)) {

diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 8f2c07d70a4a2462a2dc56afa26974654ff755cf..0a045af5419bd274e1ed737da97830f45ce46f35 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -1073,6 +1073,7 @@ enum wmi_tlv_vdev_param {
        WMI_VDEV_PARAM_ENABLE_BCAST_PROBE_RESPONSE,
        WMI_VDEV_PARAM_FILS_MAX_CHANNEL_GUARD_TIME,
        WMI_VDEV_PARAM_HE_LTF = 0x74,
+       WMI_VDEV_PARAM_ENABLE_DISABLE_RTT_RESPONDER_ROLE = 0x7d,
        WMI_VDEV_PARAM_BA_MODE = 0x7e,
        WMI_VDEV_PARAM_AUTORATE_MISC_CFG = 0x80,
        WMI_VDEV_PARAM_SET_HE_SOUNDING_MODE = 0x87,