Add support for Bluetooth 5.0 Adapter (using HCI extended scanning and connecting if supported)

On Bluetooth 5.0 Adapter where HCI extended scanning and connecting is suppored,
the original HCI commands may fail via DISALLOWED.

Tested adapter: Intel AX200 Bluetooth 5.0 (Wi-Fi 6 802.11ax (2.4Gbps) + BT 5.0)

1 files changed, 41 insertions, 5 deletions

diff --git a/src/direct_bt/BTDevice.cpp b/src/direct_bt/BTDevice.cpp
index 5f98d855..a8f7d005 100644
--- a/src/direct_bt/BTDevice.cpp
+++ b/src/direct_bt/BTDevice.cpp
@@ -53,7 +53,7 @@ BTDevice::BTDevice(const ctor_cookie& cc, BTAdapter & a, EInfoReport const & r)
     (void)cc;
     ts_last_discovery = ts_creation;
     hciConnHandle = 0;
-    le_features = LEFeatures::NONE;
+    le_features = LE_Features::NONE;
     isConnected = false;
     allowDisconnect = false;
     clearSMPStates(false /* connected */);
@@ -561,9 +561,9 @@ void BTDevice::notifyConnected(std::shared_ptr<BTDevice> sthis, const uint16_t h
     (void)sthis; // not used yet
 }
 
-void BTDevice::notifyLEFeatures(std::shared_ptr<BTDevice> sthis, const LEFeatures features) noexcept {
-    DBG_PRINT("BTDevice::notifyLEFeatures: LE_Encryption %d, %s",
-            isLEFeaturesBitSet(features, LEFeatures::LE_Encryption), toString().c_str());
+void BTDevice::notifyLEFeatures(std::shared_ptr<BTDevice> sthis, const LE_Features features) noexcept {
+    DBG_PRINT("BTDevice::notifyLEFeatures: %s, %s",
+            direct_bt::to_string(features).c_str(), toString().c_str());
     le_features = features;
 
     if( addressAndType.isLEAddress() && !l2cap_att.isOpen() ) {
@@ -585,7 +585,7 @@ void BTDevice::processL2CAPSetup(std::shared_ptr<BTDevice> sthis) {
         const SMPIOCapability io_cap_conn = pairing_data.ioCap_conn;
         BTSecurityLevel sec_level { BTSecurityLevel::UNSET };
 
-        const bool responderLikesEncryption = pairing_data.res_requested_sec || isLEFeaturesBitSet(le_features, LEFeatures::LE_Encryption);
+        const bool responderLikesEncryption = pairing_data.res_requested_sec || isLEFeaturesBitSet(le_features, LE_Features::LE_Encryption);
         if( BTSecurityLevel::UNSET != sec_level_user ) {
             sec_level = sec_level_user;
         } else if( responderLikesEncryption && SMPIOCapability::UNSET != io_cap_conn ) {
@@ -1645,6 +1645,42 @@ int BTDevice::removeAllCharListener() noexcept {
     return gatt->removeAllCharListener();
 }
 
+HCIStatusCode BTDevice::getConnectedLE_PHY(LE_PHYs& resRx, LE_PHYs& resTx) noexcept {
+    const std::lock_guard<std::recursive_mutex> lock_conn(mtx_connect); // RAII-style acquire and relinquish via destructor
+
+    HCIStatusCode res = HCIStatusCode::SUCCESS;
+    HCIHandler &hci = adapter.getHCI();
+
+    if( !isConnected ) { // should not happen
+        res = HCIStatusCode::DISCONNECTED;
+        goto errout;
+    }
+
+    if( 0 == hciConnHandle ) {
+        res = HCIStatusCode::UNSPECIFIED_ERROR;
+        goto errout;
+    }
+
+    if( !adapter.isPowered() ) {
+        res = HCIStatusCode::NOT_POWERED; // powered-off
+        goto errout;
+    }
+
+    res = hci.le_read_phy(hciConnHandle.load(), addressAndType, resRx, resTx);
+    if( HCIStatusCode::SUCCESS == res ) {
+        DBG_PRINT("BTDevice::getConnectedLE_PHY: status %s: RX %s, TX %s - %s",
+                to_string(res).c_str(),
+                to_string(resRx).c_str(), to_string(resTx).c_str(), toString().c_str());
+        return res;
+    }
+
+errout:
+    ERR_PRINT("BTDevice::getConnectedLE_PHY: status %s: RX %s, TX %s - %s",
+            to_string(res).c_str(),
+            to_string(resRx).c_str(), to_string(resTx).c_str(), toString().c_str());
+    return res;
+}
+
 void BTDevice::notifyDisconnected() noexcept {
     // coming from disconnect callback, ensure cleaning up!
     DBG_PRINT("BTDevice::notifyDisconnected: handle %s -> zero, %s",