BLE - Devirtualize pal::SecurityManager

The event handler has been extracted out of SecurityManager declaration and instantion of the interface requires the implementation and event handler type.

features/FEATURE_BLE/ble/pal/PalSecurityManager.h

@@ -17,6 +17,7 @@
 #ifndef MBED_OS_FEATURES_FEATURE_BLE_BLE_PAL_PALSM_H_
 #define MBED_OS_FEATURES_FEATURE_BLE_BLE_PAL_PALSM_H_
 
+#include "ble/common/StaticInterface.h"
 #include "platform/Callback.h"
 #include "platform/NonCopyable.h"
 #include "ble/BLETypes.h"
@@ -202,15 +203,15 @@ private:
 };
 
 /**
- * Adaptation layer of the Security Manager.
- */
-class SecurityManager : private mbed::NonCopyable<SecurityManager> {
-public:
-    /**
  * Handle events generated by ble::pal::SecurityManager
  */
-    class EventHandler {
+template<class Impl>
-    public:
+class SecurityManagerEventHandler :
+    public StaticInterface<Impl, SecurityManagerEventHandler>
+{
+    using StaticInterface<Impl, ble::pal::SecurityManagerEventHandler>::impl;
+
+public:
     ////////////////////////////////////////////////////////////////////////////
     // Pairing
     //
@@ -226,13 +227,21 @@ public:
      * @param[in] initiator_dist key distribution
      * @param[in] responder_dist key distribution
      */
-        virtual void on_pairing_request(
+    void on_pairing_request(
         connection_handle_t connection,
         bool oob_data_flag,
         AuthenticationMask authentication_requirements,
         KeyDistribution initiator_dist,
         KeyDistribution responder_dist
-        ) = 0;
+    ) {
+        impl()->on_pairing_request_(
+            connection,
+            oob_data_flag,
+            authentication_requirements,
+            initiator_dist,
+            responder_dist
+        );
+    }
 
     /**
      * Indicate that the pairing has failed.
@@ -242,28 +251,34 @@ public:
      * @param[in] connection connection handle
      * @param[in] error reason for the failed pairing
      */
-        virtual void on_pairing_error(
+    void on_pairing_error(
         connection_handle_t connection,
         pairing_failure_t error
-        ) = 0;
+    ) {
+        impl()->on_pairing_error_(connection, error);
+    }
 
     /**
      * Indicate that the pairing has timed out.
      *
      * @param[in] connection connection handle
      */
-        virtual void on_pairing_timed_out(
+    void on_pairing_timed_out(
         connection_handle_t connection
-        ) = 0;
+    ) {
+        impl()->on_pairing_timed_out_(connection);
+    }
 
     /**
      * Indicate that the pairing for the link has completed.
      *
      * @param[in] connection connection handle
      */
-        virtual void on_pairing_completed(
+    void on_pairing_completed(
         connection_handle_t connection
-        ) = 0;
+    ) {
+        impl()->on_pairing_completed_(connection);
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // Security
@@ -276,9 +291,11 @@ public:
      * @param[in] connection connection handle
      * @see BLUETOOTH SPECIFICATION Version 5.0 | Vol 6, Part B, 5.4
      */
-        virtual void on_valid_mic_timeout(
+    void on_valid_mic_timeout(
         connection_handle_t connection
-        ) = 0;
+    ) {
+        impl()->on_valid_mic_timeout_(connection);
+    }
 
     /**
      * Ask the stack to evaluate the security request received from the slave.
@@ -287,10 +304,12 @@ public:
      * @param[in] connection connection handle
      * @param[in] authentication authentication requirements from the slave
      */
-        virtual void on_slave_security_request(
+    void on_slave_security_request(
         connection_handle_t connection,
         AuthenticationMask authentication
-        ) = 0;
+    ) {
+        impl()->on_slave_security_request_(connection, authentication);
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // Encryption
@@ -304,19 +323,23 @@ public:
      * @param[in] connection connection handle
      * @param[in] result encryption state of the link
      */
-        virtual void on_link_encryption_result(
+    void on_link_encryption_result(
         connection_handle_t connection,
         link_encryption_t result
-        ) = 0;
+    ) {
+        impl()->on_link_encryption_result_(connection, result);
+    }
 
     /**
      * Indicate that the encryption request failed due to timeout.
      *
      * @param[in] connection connection handle
      */
-        virtual void on_link_encryption_request_timed_out(
+    void on_link_encryption_request_timed_out(
         connection_handle_t connection
-        ) = 0;
+    ) {
+        impl()->on_link_encryption_request_timed_out_(connection);
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // MITM
@@ -328,10 +351,15 @@ public:
      * @param[in] connection connection handle
      * @param[in] passkey passkey to be displayed
      */
-        virtual void on_passkey_display(
+    void on_passkey_display(
         connection_handle_t connection,
         passkey_num_t passkey
-        ) = 0;
+    ) {
+        impl()->on_passkey_display_(
+            connection,
+            passkey
+        );
+    }
 
     /**
      * Indicate that user confirmation is required to confirm matching
@@ -340,9 +368,11 @@ public:
      * @param[in] connection connection handle
      * @see BLUETOOTH SPECIFICATION Version 5.0 | Vol 2, Part E, 7.7.42
      */
-        virtual void on_confirmation_request(
+    void on_confirmation_request(
         connection_handle_t connection
-        ) = 0;
+    ) {
+        impl()->on_confirmation_request_(connection);
+    }
 
     /**
      * Request the passkey entered during pairing.
@@ -351,9 +381,11 @@ public:
      * @param[in] connection connection handle
      * or a cancellation of the procedure.
      */
-        virtual void on_passkey_request(
+    void on_passkey_request(
         connection_handle_t connection
-        ) = 0;
+    ) {
+        impl()->on_passkey_request_(connection);
+    }
 
     /**
      * Indicate that a key has been pressed by the peer.
@@ -362,10 +394,12 @@ public:
      * @param[in] keypress type of keypress event
      * @see BLUETOOTH SPECIFICATION Version 5.0 | Vol 3, Part H, 3.5.8
      */
-        virtual void on_keypress_notification(
+    void on_keypress_notification(
         connection_handle_t connection,
         Keypress_t keypress
-        ) = 0;
+    ) {
+        impl()->on_keypress_notification_(connection, keypress);
+    }
 
     /**
      * Request OOB data from the user application.
@@ -374,9 +408,11 @@ public:
      * @note shall be followed by: pal::SecurityManager::secure_connections_oob_request_reply
      * or a cancellation of the procedure.
      */
-        virtual void on_secure_connections_oob_request(
+    void on_secure_connections_oob_request(
         connection_handle_t connection
-        ) = 0;
+    ) {
+        impl()->on_secure_connections_oob_request_(connection);
+    }
 
     /**
      * Request OOB data from the user application.
@@ -385,9 +421,11 @@ public:
      * @note shall be followed by: pal::SecurityManager::legacy_pairing_oob_request_reply
      * or a cancellation of the procedure.
      */
-        virtual void on_legacy_pairing_oob_request(
+    void on_legacy_pairing_oob_request(
         connection_handle_t connection
-        ) = 0;
+    ) {
+        impl()->on_legacy_pairing_oob_request_(connection);
+    }
 
     /**
      * Send OOB data to the application for transport to the peer.
@@ -398,10 +436,12 @@ public:
      *                    in secure connections pairing
      * @return BLE_ERROR_NONE or appropriate error code indicating the failure reason.
      */
-        virtual void on_secure_connections_oob_generated(
+    void on_secure_connections_oob_generated(
         const oob_lesc_value_t &random,
         const oob_confirm_t &confirm
-        ) = 0;
+    ) {
+        impl()->on_secure_connections_oob_generated_(random, confirm);
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // Keys
@@ -414,10 +454,12 @@ public:
      * @param[in] connection connection handle
      * @param[in] ltk long term key from the peer
      */
-        virtual void on_secure_connections_ltk_generated(
+    void on_secure_connections_ltk_generated(
         connection_handle_t connection,
         const ltk_t &ltk
-        ) = 0;
+    ) {
+        impl()->on_secure_connections_ltk_generated_(connection, ltk);
+    }
 
     /**
      * Store the results of key distribution after LTK has been received.
@@ -425,10 +467,12 @@ public:
      * @param[in] connection connection handle
      * @param[in] ltk long term key from the peer
      */
-        virtual void on_keys_distributed_ltk(
+    void on_keys_distributed_ltk(
         connection_handle_t connection,
         const ltk_t &ltk
-        ) = 0;
+    ) {
+        impl()->on_keys_distributed_ltk_(connection, ltk);
+    }
 
     /**
      * Store the results of key distribution after EDIV and RAND has been received.
@@ -436,11 +480,13 @@ public:
      * @param[in] connection connection handle
      * @param[in] ltk long term key from the peer
      */
-        virtual void on_keys_distributed_ediv_rand(
+    void on_keys_distributed_ediv_rand(
         connection_handle_t connection,
         const ediv_t &ediv,
         const rand_t &rand
-        ) = 0;
+    ) {
+        impl()->on_keys_distributed_ediv_rand_(connection, ediv, rand);
+    }
 
     /**
      * Store the local key, if we are slave now or in the future
@@ -449,10 +495,12 @@ public:
      * @param[in] connection connection handle
      * @param[in] ltk key sent to the peer
      */
-        virtual void on_keys_distributed_local_ltk(
+    void on_keys_distributed_local_ltk(
         connection_handle_t connection,
         const ltk_t &ltk
-        ) = 0;
+    ) {
+        impl()->on_keys_distributed_local_ltk_(connection, ltk);
+    }
 
     /**
      * Store the EDIV and RAND that will be used to identify
@@ -464,11 +512,13 @@ public:
      * @param[in] ediv identifies LTK
      * @param[in] rand identifies LTK
      */
-        virtual void on_keys_distributed_local_ediv_rand(
+    void on_keys_distributed_local_ediv_rand(
         connection_handle_t connection,
         const ediv_t &ediv,
         const rand_t &rand
-        ) = 0;
+    ) {
+        impl()->on_keys_distributed_local_ediv_rand_(connection, ediv, rand);
+    }
 
     /**
      * Store the results of key distribution after IRK has been received.
@@ -476,10 +526,12 @@ public:
      * @param[in] connection connection handle
      * @param[in] irk identity resolution key
      */
-        virtual void on_keys_distributed_irk(
+    void on_keys_distributed_irk(
         connection_handle_t connection,
         const irk_t &irk
-        ) = 0;
+    ) {
+        impl()->on_keys_distributed_irk_(connection, irk);
+    }
 
     /**
      * Store the identity address of the peer after it has been distributed.
@@ -488,11 +540,13 @@ public:
      * @param[in] peer_identity_address_type public or private address indication
      * @param[in] peer_identity_address peer address
      */
-        virtual void on_keys_distributed_bdaddr(
+    void on_keys_distributed_bdaddr(
         connection_handle_t connection,
         advertising_peer_address_type_t peer_identity_address_type,
         const address_t &peer_identity_address
-        ) = 0;
+    ) {
+        impl()->on_keys_distributed_bdaddr_(connection, peer_identity_address_type, peer_identity_address);
+    }
 
     /**
      * Store the peer's CSRK after it has been distributed.
@@ -500,10 +554,12 @@ public:
      * @param[in] connection connection handle
      * @param[in] csrk signing key
      */
-        virtual void on_keys_distributed_csrk(
+    void on_keys_distributed_csrk(
         connection_handle_t connection,
         const csrk_t &csrk
-        ) = 0;
+    ) {
+        impl()->on_keys_distributed_csrk_(connection, csrk);
+    }
 
     /**
      * Request the LTK since the peer is asking us to encrypt the link. We need to
@@ -514,11 +570,13 @@ public:
      * @param[in] ediv identifies LTK
      * @param[in] rand identifies LTK
      */
-        virtual void on_ltk_request(
+    void on_ltk_request(
         connection_handle_t connection,
         const ediv_t &ediv,
         const rand_t &rand
-        ) = 0;
+    ) {
+        impl()->on_ltk_request_(connection, ediv, rand);
+    }
 
     /**
      * Request the LTK since the peer is asking us to encrypt the link.
@@ -527,15 +585,28 @@ public:
      *
      * @param[in] connection connection handle
      */
-        virtual void on_ltk_request(
+    void on_ltk_request(
         connection_handle_t connection
-        ) = 0;
+    ) {
-    };
+        impl()->on_ltk_request_(connection);
+    }
+};
+
+
+/**
+ * Adaptation layer of the Security Manager.
+ */
+template<class Impl, class EventHandler>
+class SecurityManager : private mbed::NonCopyable<SecurityManager<Impl, EventHandler> > {
+
+    Impl* impl() {
+        return static_cast<Impl*>(this);
+    }
 
 public:
     SecurityManager() : _pal_event_handler(NULL) { };
 
-    virtual ~SecurityManager() { };
+    ~SecurityManager() { };
 
     ////////////////////////////////////////////////////////////////////////////
     // SM lifecycle management
@@ -546,21 +617,27 @@ public:
      *
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t initialize() = 0;
+    ble_error_t initialize() {
+        return impl()->initialize_();
+    }
 
     /**
      * Finalise all actions. Called before shutdown.
      *
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t terminate() = 0;
+    ble_error_t terminate() {
+        return impl()->terminate_();
+    }
 
     /**
      * Reset to same state as after initialize.
      *
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t reset()  = 0;
+    ble_error_t reset() {
+        return impl()->reset_();
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // Resolving list management
@@ -575,7 +652,9 @@ public:
      * @see BLUETOOTH SPECIFICATION Version 5.0 | Vol 2, Part E: 7.8.41
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual uint8_t read_resolving_list_capacity() = 0;
+    uint8_t read_resolving_list_capacity() {
+        return impl()->read_resolving_list_capacity_();
+    }
 
     /**
      * Add a device definition into the resolving list of the LE subsystem.
@@ -586,11 +665,17 @@ public:
      * @see BLUETOOTH SPECIFICATION Version 5.0 | Vol 2, Part E: 7.8.38
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t add_device_to_resolving_list(
+    ble_error_t add_device_to_resolving_list(
         advertising_peer_address_type_t peer_identity_address_type,
         const address_t &peer_identity_address,
         const irk_t &peer_irk
-    ) = 0;
+    ) {
+        return impl()->add_device_to_resolving_list_(
+            peer_identity_address_type,
+            peer_identity_address,
+            peer_irk
+        );
+    }
 
     /**
      * Add a device definition from the resolving list of the LE subsystem.
@@ -600,10 +685,15 @@ public:
      * @see BLUETOOTH SPECIFICATION Version 5.0 | Vol 2, Part E: 7.8.39
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t remove_device_from_resolving_list(
+    ble_error_t remove_device_from_resolving_list(
         advertising_peer_address_type_t peer_identity_address_type,
         const address_t &peer_identity_address
-    ) = 0;
+    ) {
+        return impl()->remove_device_from_resolving_list_(
+            peer_identity_address_type,
+            peer_identity_address
+        );
+    }
 
     /**
      * Remove all devices from the resolving list.
@@ -611,7 +701,9 @@ public:
      * @see BLUETOOTH SPECIFICATION Version 5.0 | Vol 2, Part E: 7.8.40
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t clear_resolving_list() = 0;
+    ble_error_t clear_resolving_list() {
+        return impl()->clear_resolving_list_();
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // Pairing
@@ -628,13 +720,21 @@ public:
      * @see BLUETOOTH SPECIFICATION Version 5.0 | Vol 3, Part H - 3.5.1
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t send_pairing_request(
+    ble_error_t send_pairing_request(
         connection_handle_t connection,
         bool oob_data_flag,
         AuthenticationMask authentication_requirements,
         KeyDistribution initiator_dist,
         KeyDistribution responder_dist
-    ) = 0;
+    ) {
+        return impl()->send_pairing_request_(
+            connection,
+            oob_data_flag,
+            authentication_requirements,
+            initiator_dist,
+            responder_dist
+        );
+    }
 
     /**
      * Send a pairing response to a master.
@@ -647,13 +747,21 @@ public:
      * @param[in] responder_dist key distribution
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t send_pairing_response(
+    ble_error_t send_pairing_response(
         connection_handle_t connection,
         bool oob_data_flag,
         AuthenticationMask authentication_requirements,
         KeyDistribution initiator_dist,
         KeyDistribution responder_dist
-    ) = 0;
+    ) {
+        return impl()->send_pairing_response_(
+            connection,
+            oob_data_flag,
+            authentication_requirements,
+            initiator_dist,
+            responder_dist
+        );
+    }
 
     /**
      * Cancel an ongoing pairing.
@@ -663,10 +771,15 @@ public:
      * @see BLUETOOTH SPECIFICATION Version 5.0 | Vol 3, Part H - 3.5.5
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t cancel_pairing(
+    ble_error_t cancel_pairing(
         connection_handle_t connection,
         pairing_failure_t reason
-    ) = 0;
+    ) {
+        return impl()->cancel_pairing_(
+            connection,
+            reason
+        );
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // Feature support
@@ -678,9 +791,11 @@ public:
      * @param[out] enabled true if SC are supported
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t get_secure_connections_support(
+    ble_error_t get_secure_connections_support(
         bool &enabled
-    ) = 0;
+    ) {
+        return impl()->get_secure_connections_support_(enabled);
+    }
 
     /**
      * Set the IO capability that will be used during pairing feature exchange.
@@ -688,9 +803,11 @@ public:
      * @param[in] io_capability type of IO capabilities available on the local device
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t set_io_capability(
+    ble_error_t set_io_capability(
         io_capability_t io_capability
-    ) = 0;
+    ) {
+        return impl()->set_io_capability_(io_capability);
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // Security settings
@@ -704,10 +821,15 @@ public:
      * @param[in] timeout_in_10ms time measured in units of 10 milliseconds
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t set_authentication_timeout(
+    ble_error_t set_authentication_timeout(
         connection_handle_t connection,
         uint16_t timeout_in_10ms
-    ) = 0;
+    ) {
+        return impl()->set_authentication_timeout_(
+            connection,
+            timeout_in_10ms
+        );
+    }
 
     /**
      * Get the time after which an event will be generated unless we received a packet with
@@ -717,10 +839,15 @@ public:
      * @param[out] timeout_in_10ms time measured in units of 10 milliseconds
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t get_authentication_timeout(
+    ble_error_t get_authentication_timeout(
         connection_handle_t connection,
         uint16_t &timeout_in_10ms
-    ) = 0;
+    ) {
+        return impl()->get_authentication_timeout_(
+            connection,
+            timeout_in_10ms
+        );
+    }
 
     /**
      * Set the key size boundaries that will be used during pairing feature
@@ -735,10 +862,15 @@ public:
      *
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t set_encryption_key_requirements(
+    ble_error_t set_encryption_key_requirements(
         uint8_t min_encryption_key_size,
         uint8_t max_encryption_key_size
-    ) = 0;
+    ) {
+        return impl()->set_encryption_key_requirements_(
+            min_encryption_key_size,
+            max_encryption_key_size
+        );
+    }
 
     /**
      * Request change of security level from the master. This is called by the slave when
@@ -750,10 +882,15 @@ public:
      * @param[in] authentication authentication requirements
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t slave_security_request(
+    ble_error_t slave_security_request(
         connection_handle_t connection,
         AuthenticationMask authentication
-    ) = 0;
+    ) {
+        return impl()->slave_security_request_(
+            connection,
+            authentication
+        );
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // Encryption
@@ -771,13 +908,21 @@ public:
      * @param[in] mitm does the LTK have man in the middle protection
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t enable_encryption(
+    ble_error_t enable_encryption(
         connection_handle_t connection,
         const ltk_t &ltk,
         const rand_t &rand,
         const ediv_t &ediv,
         bool mitm
-    ) = 0;
+    ) {
+        return impl()->enable_encryption_(
+            connection,
+            ltk,
+            rand,
+            ediv,
+            mitm
+        );
+    }
 
     /**
      * Enabled encryption using the LTK given on a connection established with secure
@@ -788,11 +933,17 @@ public:
      * @param[in] mitm does the LTK have man in the middle protection
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t enable_encryption(
+    ble_error_t enable_encryption(
         connection_handle_t connection,
         const ltk_t &ltk,
         bool mitm
-    ) = 0;
+    ) {
+        return impl()->enable_encryption_(
+            connection,
+            ltk,
+            mitm
+        );
+    }
 
     /**
      * Encrypt data with a given key. This uses the facility on the controller to
@@ -802,18 +953,22 @@ public:
      * @param[in,out] data data to be encrypted, if successful contains the result
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t encrypt_data(
+    ble_error_t encrypt_data(
         const byte_array_t<16> &key,
         encryption_block_t &data
-    ) = 0;
+    ) {
+        return impl()->encrypt_data_(key, data);
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // Privacy
     //
 
-    virtual ble_error_t set_private_address_timeout(
+    ble_error_t set_private_address_timeout(
         uint16_t timeout_in_seconds
-    ) = 0;
+    ) {
+        return impl()->set_private_address_timeout(timeout_in_seconds);
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // Keys
@@ -828,12 +983,14 @@ public:
      * @param[in] secure_connections is this a secure_connections pairing
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t set_ltk(
+    ble_error_t set_ltk(
         connection_handle_t connection,
         const ltk_t &ltk,
         bool mitm,
         bool secure_connections
-    ) = 0;
+    ) {
+        return impl()->set_ltk_(connection, ltk, mitm, secure_connections);
+    }
 
     /**
      * Inform the stack we don't have the LTK.
@@ -841,9 +998,11 @@ public:
      * @param[in] connection connection handle
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t set_ltk_not_found(
+    ble_error_t set_ltk_not_found(
         connection_handle_t connection
-    ) = 0;
+    ) {
+        return impl()->set_ltk_not_found_(connection);
+    }
 
     /**
      * Set the local IRK.
@@ -851,9 +1010,11 @@ public:
      * @param[in] irk identity resolution key
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t set_irk(
+    ble_error_t set_irk(
         const irk_t &irk
-    ) = 0;
+    ) {
+        return impl()->set_irk_(irk);
+    }
 
     /**
      * Set the local CSRK.
@@ -862,10 +1023,12 @@ public:
      * @param[in] sign_counter local signing counter
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t set_csrk(
+    ble_error_t set_csrk(
         const csrk_t &csrk,
         sign_count_t sign_counter
-    ) = 0;
+    ) {
+        return impl()->set_csrk_(csrk, sign_counter);
+    }
 
     /**
      * Set the peer CSRK for particular connection.
@@ -876,14 +1039,23 @@ public:
      * @param[in] sign_counter signing counter
      * @retval BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t set_peer_csrk(
+    ble_error_t set_peer_csrk(
         connection_handle_t connection,
         const csrk_t &csrk,
         bool authenticated,
         sign_count_t sign_counter
-    ) = 0;
+    ) {
+        return impl()->set_peer_csrk_(
+            connection,
+            csrk,
+            authenticated,
+            sign_counter
+        );
+    }
 
-    virtual ble_error_t remove_peer_csrk(connection_handle_t connection) = 0;
+    ble_error_t remove_peer_csrk(connection_handle_t connection) {
+        return impl()->remove_peer_csrk_(connection);
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // Authentication
@@ -896,9 +1068,11 @@ public:
      * @see BLUETOOTH SPECIFICATION Version 5.0 | Vol 2, Part H 2
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t get_random_data(
+    ble_error_t get_random_data(
         byte_array_t<8> &random_data
-    ) = 0;
+    ) {
+        return impl()->get_random_data_(random_data);
+    }
 
     ////////////////////////////////////////////////////////////////////////////
     // MITM
@@ -924,19 +1098,23 @@ public:
      *
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t set_display_passkey(
+    ble_error_t set_display_passkey(
         passkey_num_t passkey
-    ) = 0;
+    ) {
+        return impl()->set_display_passkey_(passkey);
+    }
 
     /**
      * Reply to a passkey request received from the SecurityManagerEventHandler.
      *
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t passkey_request_reply(
+    ble_error_t passkey_request_reply(
         connection_handle_t connection,
         passkey_num_t passkey
-    ) = 0;
+    ) {
+        return impl()->passkey_request_reply_(connection, passkey);
+    }
 
     /**
      * Reply to a Secure Connections oob data request received from the SecurityManagerEventHandler.
@@ -948,12 +1126,19 @@ public:
      *                         in secure connections pairing
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t secure_connections_oob_request_reply(
+    ble_error_t secure_connections_oob_request_reply(
         connection_handle_t connection,
         const oob_lesc_value_t &local_random,
         const oob_lesc_value_t &peer_random,
         const oob_confirm_t &peer_confirm
-    ) = 0;
+    ) {
+        return impl()->secure_connections_oob_request_reply_(
+            connection,
+            local_random,
+            peer_random,
+            peer_confirm
+        );
+    }
 
     /**
      * Reply to a legacy pairing oob data request received from the SecurityManagerEventHandler.
@@ -962,10 +1147,12 @@ public:
      * @param[in] oob_data pointer to out of band data
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t legacy_pairing_oob_request_reply(
+    ble_error_t legacy_pairing_oob_request_reply(
         connection_handle_t connection,
         const oob_tk_t &oob_data
-    ) = 0;
+    ) {
+        return impl()->legacy_pairing_oob_request_reply_(connection, oob_data);
+    }
 
     /**
      * Notify the stack that the user has confirmed the values during numerical
@@ -975,10 +1162,12 @@ public:
      * @param[in] confirmation true if the user indicated the numbers match
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t confirmation_entered(
+    ble_error_t confirmation_entered(
         connection_handle_t connection,
         bool confirmation
-    ) = 0;
+    ) {
+        return impl()->confirmation_entered_(connection, confirmation);
+    }
 
     /**
      * Notify the stack that the user pressed a key. This will be sent to the peer and create
@@ -988,16 +1177,20 @@ public:
      * @param[in] keypress type of keypress event
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t send_keypress_notification(
+    ble_error_t send_keypress_notification(
         connection_handle_t connection,
         Keypress_t keypress
-    ) = 0;
+    ) {
+        return impl()->send_keypress_notification_(connection, keypress);
+    }
 
     /**
      * Generate local OOB data to be sent to the application which sends it to the peer.
      * @return BLE_ERROR_NONE On success, else an error code indicating reason for failure
      */
-    virtual ble_error_t generate_secure_connections_oob() = 0;
+    ble_error_t generate_secure_connections_oob() {
+        return impl()->generate_secure_connections_oob_();
+    }
 
     /* Entry points for the underlying stack to report events back to the user. */
 public: