diff --git a/android/hal-ipc-api.txt b/android/hal-ipc-api.txt
index 5f2561a..04c0b7c 100644
--- a/android/hal-ipc-api.txt
+++ b/android/hal-ipc-api.txt
Opcode 0x92 - Listen notification
+ Notification parameters: Status (4 octets)
+ Server Interface (4 octets)
+
Opcode 0x93 - Register Server notification
Opcode 0x94 - Connection notification
Opcode 0x95 - Service Added notification
diff --git a/android/hal-msg.h b/android/hal-msg.h
index 53fe5c4..e8f26dd 100644
--- a/android/hal-msg.h
+++ b/android/hal-msg.h
int32_t rssi;
int32_t status;
} __attribute__((packed));
+
+#define HAL_EV_GATT_CLIENT_LISTEN 0x92
+struct hal_ev_gatt_client_listen {
+ int32_t status;
+ int32_t server_if;
+} __attribute__((packed));