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From: tkuik <tkuik@FreeBSD.org>
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Subject: PERFORCE change 105278 for review
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http://perforce.freebsd.org/chv.cgi?CH=105278

Change 105278 by tkuik@tkuik_freebsd on 2006/08/29 18:41:50

	Fix TCP checksum issue with DOM0

Affected files ...

.. //depot/projects/xen3/src/sys/dev/xen/netfront/netfront.c#8 edit

Differences ...

==== //depot/projects/xen3/src/sys/dev/xen/netfront/netfront.c#8 (text+ko) ====

@@ -758,10 +758,13 @@
 		m->m_pkthdr.len = m->m_len = rx->status;
 		m->m_pkthdr.rcvif = ifp;
 		
-#ifdef notyet
-		if ( rx->flags & NETRXF_csum_valid )
-			skb->ip_summed = CHECKSUM_UNNECESSARY;
-#endif
+		if ( rx->flags & NETRXF_data_validated ) {
+			/* Tell the stack the checksums are okay */
+			m->m_pkthdr.csum_flags |=
+				(CSUM_IP_CHECKED | CSUM_IP_VALID | CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
+			m->m_pkthdr.csum_data = 0xffff;
+		}
+
 		np->stats.rx_packets++;
 		np->stats.rx_bytes += rx->status;