Merge branch 'feature/gatt_caching_support_v5.1' into 'release/v5.1'

feat(nimble): Gatt caching support (v5.1)

See merge request espressif/esp-idf!28512

components/bt/CMakeLists.txt

@@ -609,11 +609,14 @@ if(CONFIG_BT_ENABLED)
                     "host/nimble/nimble/nimble/host/store/ram/src/ble_store_ram.c"
                     "host/nimble/nimble/nimble/host/store/config/src/ble_store_config.c"
                     "host/nimble/nimble/nimble/host/store/config/src/ble_store_nvs.c"
+                    "host/nimble/nimble/nimble/host/src/ble_gattc_cache.c"
+                    "host/nimble/nimble/nimble/host/src/ble_gattc_cache_conn.c"
                 )
 
             list(APPEND srcs
                 "host/nimble/nimble/porting/nimble/src/nimble_port.c"
                 "host/nimble/nimble/porting/npl/freertos/src/nimble_port_freertos.c"
+                "host/nimble/port/src/nvs_port.c"
             )
             list(APPEND include_dirs
                 porting/include

components/bt/host/nimble/Kconfig.in

@@ -619,6 +619,36 @@ config BT_NIMBLE_PERIODIC_ADV_ENH
     help
         Enable the periodic advertising enhancements
 
+menuconfig BT_NIMBLE_GATT_CACHING
+    bool "Enable GATT caching"
+    depends on BT_NIMBLE_ENABLED && BT_NIMBLE_50_FEATURE_SUPPORT
+    help
+            Enable GATT caching
+config BT_NIMBLE_GATT_CACHING_MAX_CONNS
+    int "Maximum connections to be cached"
+    depends on BT_NIMBLE_GATT_CACHING
+    default 1
+    help
+        Set this option to set the upper limit on number of connections to be cached.
+config BT_NIMBLE_GATT_CACHING_MAX_SVCS
+    int "Maximum number of services per connection"
+    depends on BT_NIMBLE_GATT_CACHING
+    default 64
+    help
+        Set this option to set the upper limit on number of services per connection to be cached.
+config BT_NIMBLE_GATT_CACHING_MAX_CHRS
+    int "Maximum number of characteristics per connection"
+    depends on BT_NIMBLE_GATT_CACHING
+    default 64
+    help
+        Set this option to set the upper limit on number of characteristics per connection to be cached.
+config BT_NIMBLE_GATT_CACHING_MAX_DSCS
+    int "Maximum number of descriptors per connection"
+    depends on BT_NIMBLE_GATT_CACHING
+    default 64
+    help
+        Set this option to set the upper limit on number of discriptors per connection to be cached.
+
 config BT_NIMBLE_WHITELIST_SIZE
     int "BLE white list size"
     depends on BT_NIMBLE_ENABLED

components/bt/host/nimble/port/include/esp_nimble_cfg.h

@@ -129,6 +129,16 @@
 #define MYNEWT_VAL_BLE_MAX_PERIODIC_ADVERTISER_LIST (CONFIG_BT_NIMBLE_MAX_PERIODIC_ADVERTISER_LIST)
 #endif
 
+#ifndef CONFIG_BT_NIMBLE_GATT_CACHING
+#define MYNEWT_VAL_BLE_GATT_CACHING (0)
+#else
+#define MYNEWT_VAL_BLE_GATT_CACHING           (CONFIG_BT_NIMBLE_GATT_CACHING)
+#define MYNEWT_VAL_BLE_GATT_CACHING_MAX_CONNS (CONFIG_BT_NIMBLE_GATT_CACHING_MAX_CONNS)
+#define MYNEWT_VAL_BLE_GATT_CACHING_MAX_SVCS  (CONFIG_BT_NIMBLE_GATT_CACHING_MAX_SVCS)
+#define MYNEWT_VAL_BLE_GATT_CACHING_MAX_CHRS  (CONFIG_BT_NIMBLE_GATT_CACHING_MAX_CHRS)
+#define MYNEWT_VAL_BLE_GATT_CACHING_MAX_DSCS  (CONFIG_BT_NIMBLE_GATT_CACHING_MAX_DSCS)
+#endif
+
 #ifndef CONFIG_BT_NIMBLE_MAX_EXT_ADV_INSTANCES
 #define MYNEWT_VAL_BLE_MULTI_ADV_INSTANCES (1)
 #else

components/bt/host/nimble/port/src/nvs_port.c

@@ -0,0 +1,40 @@
+/*
+ * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef _NVS_H
+#define _NVS_H
+
+#include <stdio.h>
+#include "nvs.h"
+#include "nimble/storage_port.h"
+
+static int
+nvs_open_custom(const char* namespace_name, open_mode_t open_mode, cache_handle_t *out_handle)
+{
+    switch (open_mode) {
+    case READONLY:
+        return nvs_open(namespace_name, NVS_READONLY, out_handle);
+
+    case READWRITE:
+        return nvs_open(namespace_name, NVS_READWRITE, out_handle);
+
+    default:
+        return -1;
+    }
+}
+
+struct cache_fn_mapping
+link_storage_fn(void *storage_cb)
+{
+    struct cache_fn_mapping cache_fn;
+    cache_fn.open = nvs_open_custom;
+    cache_fn.close = nvs_close;
+    cache_fn.erase_all = nvs_erase_all;
+    cache_fn.write = nvs_set_blob;
+    cache_fn.read = nvs_get_blob;
+    return cache_fn;
+}
+#endif