HCIHAndler: Prepare filtering for HCIOpcode using condensed uint64_t HCIOpcodeBit field

It is desired to filter out command replies for unrelated or unsupported commands.

Since HCIOpcode values can't be used directly due their wide value range,
we use the condensed HCIOpcodeBit for a uint64_t field, limeted to 64 commands.

1 files changed, 13 insertions, 0 deletions

diff --git a/src/direct_bt/HCIHandler.cpp b/src/direct_bt/HCIHandler.cpp
index 400828c5..48b7d08c 100644
--- a/src/direct_bt/HCIHandler.cpp
+++ b/src/direct_bt/HCIHandler.cpp
@@ -481,6 +481,19 @@ HCIHandler::HCIHandler(const BTMode btMode, const uint16_t dev_id,
         filter_set_metaev(HCIMetaEventType::LE_ADVERTISING_REPORT, mask);
         filter_put_metaevs(mask);
     }
+    // Mandatory own HCIOpcodeBit/HCIOpcode filter
+    {
+        uint64_t mask = 0;
+        // filter_all_opcbit(mask);
+        filter_set_opcbit(HCIOpcodeBit::CREATE_CONN, mask);
+        filter_set_opcbit(HCIOpcodeBit::DISCONNECT, mask);
+        filter_set_opcbit(HCIOpcodeBit::RESET, mask);
+        filter_set_opcbit(HCIOpcodeBit::READ_LOCAL_VERSION, mask);
+        filter_set_opcbit(HCIOpcodeBit::LE_SET_SCAN_PARAM, mask);
+        filter_set_opcbit(HCIOpcodeBit::LE_SET_SCAN_ENABLE, mask);
+        filter_set_opcbit(HCIOpcodeBit::LE_CREATE_CONN, mask);
+        filter_put_opcbit(mask);
+    }
     {
         HCICommand req0(HCIOpcode::READ_LOCAL_VERSION, 0);
         const hci_rp_read_local_version * ev_lv;