Changeset 11060 in vbox for trunk/src/VBox/Runtime/common/checksum/ipv4.cpp

Timestamp:

Aug 1, 2008 2:20:15 AM (16 years ago)

Author:

vboxsync

Message:

RTNetIPv4IsUDPValid: the UDP checksum is optional, so don't fail if it's not set.

File:

• trunk/src/VBox/Runtime/common/checksum/ipv4.cpp (modified) (1 diff)

trunk/src/VBox/Runtime/common/checksum/ipv4.cpp

@@ -448 +448 @@
     if (RT_UNLIKELY(!rtNetIPv4IsUDPSizeValid(pIpHdr, pUdpHdr, cbPktMax)))
         return false;
-    uint16_t u16Sum = RTNetIPv4UDPChecksum(pIpHdr, pUdpHdr, pvData);
-    if (RT_UNLIKELY(pUdpHdr->uh_sum != u16Sum))
-        return false;
+    if (pUdpHdr->uh_sum)
+    {
+        uint16_t u16Sum = RTNetIPv4UDPChecksum(pIpHdr, pUdpHdr, pvData);
+        if (RT_UNLIKELY(pUdpHdr->uh_sum != u16Sum))
+            return false;
+    }
     return true;
 }