feat(ble): Add duplicate filter feature enable on ble for c6.

components/bt/controller/esp32c6/Kconfig.in

@@ -422,3 +422,59 @@ config BT_LE_USE_ESP_TIMER
     help
         Set this option to use Esp Timer which has higher priority timer
         instead of FreeRTOS timer
+
+config BT_LE_SCAN_DUPL
+    bool "BLE Scan Duplicate Options"
+    default y
+    help
+        This select enables parameters setting of BLE scan duplicate.
+
+choice BT_LE_SCAN_DUPL_TYPE
+    prompt "Scan Duplicate Type"
+    default BT_LE_SCAN_DUPL_TYPE_DEVICE
+    depends on BT_LE_SCAN_DUPL
+    help
+        Scan duplicate have three ways. one is "Scan Duplicate By Device Address", This way is to use
+        advertiser address filtering. The adv packet of the same address is only allowed to be reported once.
+        Another way is "Scan Duplicate By Device Address And Advertising Data". This way is to use advertising
+        data and device address filtering. All different adv packets with the same address are allowed to be
+        reported. The last way is "Scan Duplicate By Advertising Data". This way is to use advertising data
+        filtering. All same advertising data only allow to be reported once even though they are from
+        different devices.
+
+    config BT_LE_SCAN_DUPL_TYPE_DEVICE
+        bool "Scan Duplicate By Device Address"
+        help
+            This way is to use advertiser address filtering. The adv packet of the same address is only
+            allowed to be reported once
+
+    config BT_LE_SCAN_DUPL_TYPE_DATA
+        bool "Scan Duplicate By Advertising Data"
+        help
+            This way is to use advertising data filtering. All same advertising data only allow to be reported
+            once even though they are from different devices.
+
+    config BT_LE_SCAN_DUPL_TYPE_DATA_DEVICE
+        bool "Scan Duplicate By Device Address And Advertising Data"
+        help
+            This way is to use advertising data and device address filtering. All different adv packets with
+            the same address are allowed to be reported.
+endchoice
+
+config BT_LE_SCAN_DUPL_TYPE
+    int
+    depends on BT_LE_SCAN_DUPL
+    default 0 if BT_LE_SCAN_DUPL_TYPE_DEVICE
+    default 1 if BT_LE_SCAN_DUPL_TYPE_DATA
+    default 2 if BT_LE_SCAN_DUPL_TYPE_DATA_DEVICE
+    default 0
+
+
+config BT_LE_SCAN_DUPL_CACHE_SIZE
+    int "Maximum number of devices in scan duplicate filter"
+    depends on BT_LE_SCAN_DUPL
+    range 10 1000
+    default 100
+    help
+        Maximum number of devices which can be recorded in scan duplicate filter.
+        When the maximum amount of device in the filter is reached, the cache will be refreshed.

components/bt/controller/esp32c6/bt.c

@@ -617,6 +617,66 @@ void controller_sleep_deinit(void)
 #endif //CONFIG_PM_ENABLE
 }
 
+typedef enum {
+    FILTER_DUPLICATE_PDUTYPE = BIT(0),
+    FILTER_DUPLICATE_LENGTH  = BIT(1),
+    FILTER_DUPLICATE_ADDRESS = BIT(2),
+    FILTER_DUPLICATE_ADVDATA = BIT(3),
+    FILTER_DUPLICATE_DEFAULT = FILTER_DUPLICATE_PDUTYPE | FILTER_DUPLICATE_ADDRESS,
+    FILTER_DUPLICATE_PDU_ALL = 0xF,
+    FILTER_DUPLICATE_EXCEPTION_FOR_MESH = BIT(4),
+    FILTER_DUPLICATE_AD_TYPE = BIT(5),
+}disc_duplicate_mode_t;
+
+
+extern void filter_duplicate_mode_enable(disc_duplicate_mode_t mode);
+extern void filter_duplicate_mode_disable(disc_duplicate_mode_t mode);
+extern void filter_duplicate_set_ring_list_max_num(uint32_t max_num);
+
+int
+ble_vhci_disc_duplicate_mode_enable(int mode)
+{
+    // TODO: use vendor hci to update
+    filter_duplicate_mode_enable(mode);
+    return true;
+}
+
+int
+ble_vhci_disc_duplicate_mode_disable(int mode)
+{
+    // TODO: use vendor hci to update
+    filter_duplicate_mode_disable(mode);
+    return true;
+}
+
+int ble_vhci_disc_duplicate_set_max_cache_size(int max_cache_size){
+    // TODO: use vendor hci to update
+    filter_duplicate_set_ring_list_max_num(max_cache_size);
+    return true;
+}
+
+/**
+ * @brief Config scan duplicate option mode from menuconfig (Adapt to the old configuration method.)
+ */
+void ble_controller_scan_duplicate_config()
+{
+    uint32_t duplicate_mode = FILTER_DUPLICATE_DEFAULT;
+    uint32_t cache_size = CONFIG_BT_LE_SCAN_DUPL_CACHE_SIZE;
+    if (CONFIG_BT_LE_SCAN_DUPL_TYPE == 0) {
+        duplicate_mode = FILTER_DUPLICATE_ADDRESS;
+    } else if (CONFIG_BT_LE_SCAN_DUPL_TYPE == 1) {
+        duplicate_mode = FILTER_DUPLICATE_ADVDATA;
+    } else if (CONFIG_BT_LE_SCAN_DUPL_TYPE == 2) {
+        duplicate_mode = FILTER_DUPLICATE_ADDRESS | FILTER_DUPLICATE_ADVDATA;
+    }
+
+    duplicate_mode |= FILTER_DUPLICATE_EXCEPTION_FOR_MESH;
+
+    ble_vhci_disc_duplicate_mode_disable(0xFF);
+    ble_vhci_disc_duplicate_mode_enable(duplicate_mode);
+    ble_vhci_disc_duplicate_set_max_cache_size(cache_size);
+}
+
 esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg)
 {
     uint8_t mac[6];
@@ -730,6 +790,8 @@ esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg)
         goto free_controller;
     }
 
+    ble_controller_scan_duplicate_config();
+
     ret = controller_sleep_init();
     if (ret != ESP_OK) {
         ESP_LOGW(NIMBLE_PORT_LOG_TAG, "controller_sleep_init failed %d", ret);

components/bt/include/esp32c6/include/esp_bt.h

@@ -256,7 +256,7 @@ typedef struct {
     .sleep_en                   = NIMBLE_SLEEP_ENABLE,                                  \
     .coex_phy_coded_tx_rx_time_limit = DEFAULT_BT_LE_COEX_PHY_CODED_TX_RX_TLIM_EFF,     \
     .dis_scan_backoff           = NIMBLE_DISABLE_SCAN_BACKOFF,                          \
-    .ble_scan_classify_filter_enable         = 0,                                       \
+    .ble_scan_classify_filter_enable         = 1,                                       \
     .main_xtal_freq             = CONFIG_XTAL_FREQ,                                     \
     .version_num                = efuse_hal_chip_revision(),                            \
     .cpu_freq_mhz               = CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ,                      \