commit 604763722c655c7e3f31ecf6f7b4dafcd26a7a15
author Herbert Xu <herbert@gondor.apana.org.au> Mon Apr 09 11:59:39 2007 -0700
committer David S. Miller <davem@sunset.davemloft.net> Wed Apr 25 22:28:43 2007 -0700
tree a5c07f0e22ac86e7ca7a8c80bd3f111116610edd
parent 628592ccdbbb5bb751217cf02e2e7abb500d7ffe

[NET]: Treat CHECKSUM_PARTIAL as CHECKSUM_UNNECESSARY

When a transmitted packet is looped back directly, CHECKSUM_PARTIAL
maps to the semantics of CHECKSUM_UNNECESSARY.  Therefore we should
treat it as such in the stack.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/core/netpoll.c

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 1fb30c3..b316435 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -86,7 +86,7 @@
 {
 	__wsum psum;
 
-	if (uh->check == 0 || skb->ip_summed == CHECKSUM_UNNECESSARY)
+	if (uh->check == 0 || skb_csum_unnecessary(skb))
 		return 0;
 
 	psum = csum_tcpudp_nofold(saddr, daddr, ulen, IPPROTO_UDP, 0);