VectorCAN: Fix receiving transmit echo for all sent frames

* Implement QCanBusDevice::ReceiveOwnKey for configuration
* Discard transmit echo frames when ReceiveOwnKey is disabled

Task-number: QTBUG-59037
Change-Id: I2a6ce5c6f9ca73225ec4cdb4ece776a05be4c906
Reviewed-by: Denis Shienkov <denis.shienkov@gmail.com>
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>
Reviewed-by: Mihai Baneu <bdmihai@gmail.com>

2 files changed, 7 insertions, 0 deletions

diff --git a/src/plugins/canbus/vectorcan/vectorcanbackend.cpp b/src/plugins/canbus/vectorcan/vectorcanbackend.cpp
index adca3cb..e57bb40 100644
--- a/src/plugins/canbus/vectorcan/vectorcanbackend.cpp
+++ b/src/plugins/canbus/vectorcan/vectorcanbackend.cpp
@@ -240,6 +240,9 @@ bool VectorCanBackendPrivate::setConfigurationParameter(int key, const QVariant
     switch (key) {
     case QCanBusDevice::BitRateKey:
         return setBitRate(value.toUInt());
+    case QCanBusDevice::ReceiveOwnKey:
+        transmitEcho = value.toBool();
+        return true;
     default:
         q->setError(VectorCanBackend::tr("Unsupported configuration key"),
                     QCanBusDevice::ConfigurationError);
@@ -348,6 +351,9 @@ void VectorCanBackendPrivate::startRead()
 
         const s_xl_can_msg &msg = event.tagData.msg;
 
+        if ((msg.flags & XL_CAN_MSG_FLAG_TX_COMPLETED) && !transmitEcho)
+            continue;
+
         QCanBusFrame frame(msg.id, QByteArray(reinterpret_cast<const char *>(msg.data),
                                               int(msg.dlc)));
         frame.setTimeStamp(QCanBusFrame::TimeStamp::fromMicroSeconds(event.timeStamp / 1000));
diff --git a/src/plugins/canbus/vectorcan/vectorcanbackend_p.h b/src/plugins/canbus/vectorcan/vectorcanbackend_p.h
index 141aca8..4e14eca 100644
--- a/src/plugins/canbus/vectorcan/vectorcanbackend_p.h
+++ b/src/plugins/canbus/vectorcan/vectorcanbackend_p.h
@@ -84,6 +84,7 @@ public:
 
     VectorCanBackend * const q_ptr;
 
+    bool transmitEcho = false;
     long portHandle = XL_INVALID_PORTHANDLE;
     quint64 channelMask = 0;
     HANDLE readHandle = INVALID_HANDLE_VALUE;