netkvm: Delete virtqueues on shutdown

Virtqueues are completely reinitialized on power-on so they should also be completely shutdown/deleted on power-off. We still reuse the same page-contiguous memory (CVirtQueue::m_SharedMemory) but pool allocations (virtio 1.0) are freed and then reallocated.
YanVugenfirer · Aug 9, 2016 · cdbb567 · cdbb567
1 parent 3e294db
commit cdbb567
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Showing 2 changed files with 5 additions and 1 deletion.
diff --git a/NetKVM/Common/ParaNdis-VirtQueue.cpp b/NetKVM/Common/ParaNdis-VirtQueue.cpp
@@ -79,6 +79,7 @@ void CVirtQueue::Delete()
     if (m_VirtQueue != nullptr)
     {
         virtio_delete_queue(m_VirtQueue);
+        m_VirtQueue = nullptr;
     }
 }
 

diff --git a/NetKVM/Common/ParaNdis-VirtQueue.h b/NetKVM/Common/ParaNdis-VirtQueue.h
@@ -171,7 +171,10 @@ class CVirtQueue
     void Renew();
 
     void Shutdown()
-    { virtqueue_shutdown(m_VirtQueue); }
+    {
+        virtqueue_shutdown(m_VirtQueue);
+        Delete();
+    }
 
     u16 SetMSIVector(u16 vector);