[ovs-dev] [PATCH 08/19] datapath: Compatibility code for inet_proto_csum_replace2.
Jesse Gross
jesse at nicira.com
Thu Dec 9 06:14:06 UTC 2010
Kernels earlier than 2.6.25 did not define inet_proto_csum_replace2,
so implement it ourselves.
Signed-off-by: Jesse Gross <jesse at nicira.com>
---
.../linux-2.6/compat-2.6/include/net/checksum.h | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/datapath/linux-2.6/compat-2.6/include/net/checksum.h b/datapath/linux-2.6/compat-2.6/include/net/checksum.h
index a8c47d8..15edf19 100644
--- a/datapath/linux-2.6/compat-2.6/include/net/checksum.h
+++ b/datapath/linux-2.6/compat-2.6/include/net/checksum.h
@@ -25,6 +25,11 @@ static inline void csum_replace4(__sum16 *sum, __be32 from, __be32 to)
sum = csum_fold(csum_partial((char *)diff, sizeof(diff), ~csum_unfold(*sum)));
}
+
+#define inet_proto_csum_replace2(__sum16 *sum, struct sk_buff *skb, \
+ __be16 from, __be16 to, int pseudohdr) \
+ inet_proto_csum_replace4(sum, skb, (__force __be32)(from), \
+ (__force __be32)(to), pseudohdr);
#endif
#endif /* checksum.h */
--
1.7.1
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