emulator: Add support for pre/post command/event hooks

Now who use emulator can add hooks to manipulate hci packets before
and after process commands and send events.

1 files changed, 15 insertions, 0 deletions

diff --git a/emulator/btdev.h b/emulator/btdev.h
index 9fb023cb1..085093f40 100644
--- a/emulator/btdev.h
+++ b/emulator/btdev.h
@@ -23,6 +23,7 @@
  */
 
 #include <stdint.h>
+#include <stdbool.h>
 
 #define BTDEV_RESPONSE_DEFAULT		0
 #define BTDEV_RESPONSE_COMMAND_STATUS	1
@@ -53,6 +54,9 @@ typedef void (*btdev_command_func) (uint16_t opcode,
 typedef void (*btdev_send_func) (const void *data, uint16_t len,
 							void *user_data);
 
+typedef bool (*btdev_hook_func) (const void *data, uint16_t len,
+							void *user_data);
+
 enum btdev_type {
 	BTDEV_TYPE_BREDRLE,
 	BTDEV_TYPE_BREDR,
@@ -60,6 +64,13 @@ enum btdev_type {
 	BTDEV_TYPE_AMP,
 };
 
+enum btdev_hook_type {
+	BTDEV_HOOK_PRE_CMD,
+	BTDEV_HOOK_POST_CMD,
+	BTDEV_HOOK_PRE_EVT,
+	BTDEV_HOOK_POST_EVT,
+};
+
 struct btdev;
 
 struct btdev *btdev_create(enum btdev_type type, uint16_t id);
@@ -74,3 +85,7 @@ void btdev_set_send_handler(struct btdev *btdev, btdev_send_func handler,
 							void *user_data);
 
 void btdev_receive_h4(struct btdev *btdev, const void *data, uint16_t len);
+
+int btdev_add_hook(struct btdev *btdev, enum btdev_hook_type type,
+				uint16_t opcode, btdev_hook_func handler,
+				void *user_data);