Nimble: Stack support for Connection subrating feature

components/bt/host/nimble/Kconfig.in

@@ -585,6 +585,19 @@ config BT_NIMBLE_MAX_PERIODIC_ADVERTISER_LIST
     help
         Set this option to set the upper limit for number of periodic advertiser list.
 
+menuconfig BT_NIMBLE_53_FEATURE_SUPPORT
+    bool "Enable BLE 5.3 feature"
+    depends on BT_NIMBLE_ENABLED && SOC_ESP_NIMBLE_CONTROLLER
+    help
+            Enable BLE 5.3 feature
+
+config BT_NIMBLE_SUBRATE
+    bool "Connection Subrate"
+    depends on BT_NIMBLE_53_FEATURE_SUPPORT
+    help
+        Enable support for Connection Subrate
+
+
 choice BT_NIMBLE_COEX_PHY_CODED_TX_RX_TLIM
     prompt "Coexistence: limit on MAX Tx/Rx time for coded-PHY connection"
     default BT_NIMBLE_COEX_PHY_CODED_TX_RX_TLIM_DIS

components/bt/host/nimble/nimble

@@ -1 +1 @@
-Subproject commit 9ac9b21f722cc63302a22f7244f162ce9d5b038d
+Subproject commit a13c79b4febea7a6a0ec1e245f4d017c4cdf5c84

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

@@ -160,6 +160,19 @@
 #ifndef MYNEWT_VAL_BLE_WHITELIST
 #define MYNEWT_VAL_BLE_WHITELIST (1)
 #endif
+
+#ifndef CONFIG_BT_NIMBLE_53_FEATURE_SUPPORT
+#define BLE_53_FEATURE_SUPPORT (0)
+#else
+#define BLE_53_FEATURE_SUPPORT (CONFIG_BT_NIMBLE_53_FEATURE_SUPPORT)
+#endif
+
+#ifndef CONFIG_BT_NIMBLE_SUBRATE
+#define MYNEWT_VAL_BLE_CONN_SUBRATING (0)
+#else
+#define MYNEWT_VAL_BLE_CONN_SUBRATING (CONFIG_BT_NIMBLE_SUBRATE)
+#endif
+
 /*** @apache-mynewt-nimble/nimble/controller */
 /*** @apache-mynewt-nimble/nimble/controller */
 #ifndef MYNEWT_VAL_BLE_CONTROLLER

components/bt/porting/nimble/include/nimble/hci_common.h

@@ -1068,6 +1068,25 @@ struct ble_hci_le_set_host_feat_cp {
     uint8_t val;
 } __attribute__((packed));
 
+#define BLE_HCI_OCF_LE_SET_DEFAULT_SUBRATE		 (0x007D)
+struct ble_hci_le_set_default_subrate_cp {
+    uint16_t subrate_min;
+    uint16_t subrate_max;
+    uint16_t max_latency;
+    uint16_t cont_num;
+    uint16_t supervision_tmo;
+} __attribute__((packed));
+
+#define BLE_HCI_OCF_LE_SUBRATE_REQ			 (0x007E)
+struct ble_hci_le_subrate_req_cp {
+    uint16_t conn_handle;
+    uint16_t subrate_min;
+    uint16_t subrate_max;
+    uint16_t max_latency;
+    uint16_t cont_num;
+    uint16_t supervision_tmo;
+} __attribute__((packed));
+
 /* --- Vendor specific commands (OGF 0x00FF) */
 #define BLE_HCI_OCF_VS_RD_STATIC_ADDR                 (0x0001)
 struct ble_hci_vs_rd_static_addr_rp {
@@ -1797,6 +1816,18 @@ struct ble_hci_ev_le_subev_biginfo_adv_report {
     uint8_t encryption;
 } __attribute__((packed));
 
+#define BLE_HCI_LE_SUBEV_SUBRATE_CHANGE        (0x23)
+struct ble_hci_ev_le_subev_subrate_change {
+    uint8_t subev_code;
+    uint8_t status;
+    uint16_t conn_handle;
+    uint16_t subrate_factor;
+    uint16_t periph_latency;
+    uint16_t cont_num;
+    uint16_t supervision_tmo;
+} __attribute__((packed));
+
+
 /* Data buffer overflow event */
 #define BLE_HCI_EVENT_ACL_BUF_OVERFLOW      (0x01)
 
@@ -1839,6 +1870,7 @@ struct ble_hci_ev_le_subev_biginfo_adv_report {
 #define BLE_HCI_VER_BCS_5_0                 (9)
 #define BLE_HCI_VER_BCS_5_1                 (10)
 #define BLE_HCI_VER_BCS_5_2                 (11)
+#define BLE_HCI_VER_BCS_5_3                 (12)
 
 #define BLE_LMP_VER_BCS_1_0b                (0)
 #define BLE_LMP_VER_BCS_1_1                 (1)
@@ -1852,6 +1884,7 @@ struct ble_hci_ev_le_subev_biginfo_adv_report {
 #define BLE_LMP_VER_BCS_5_0                 (9)
 #define BLE_LMP_VER_BCS_5_1                 (10)
 #define BLE_LMP_VER_BCS_5_2                 (11)
+#define BLE_LMP_VER_BCS_5_3                 (12)
 
 /* selected HCI and LMP version */
 #if MYNEWT_VAL(BLE_VERSION) == 50