LU-1025 checksum: add final bit inversion for crc32c

[fs/lustre-release.git] / lustre / include / obd_cksum.h

diff --git a/lustre/include/obd_cksum.h b/lustre/include/obd_cksum.h
index ef76b66..ddebbba 100644 (file)
--- a/lustre/include/obd_cksum.h
+++ b/lustre/include/obd_cksum.h
@@ -163,6 +163,13 @@ static inline __u32 init_checksum(cksum_type_t cksum_type)
         return 0;
 }
 
+static inline __u32 fini_checksum(__u32 cksum, cksum_type_t cksum_type)
+{
+        if (cksum_type == OBD_CKSUM_CRC32C)
+                return ~cksum;
+        return cksum;
+}
+
 static inline __u32 compute_checksum(__u32 cksum, unsigned char const *p,
                                      size_t len, cksum_type_t cksum_type)
 {