return (__force __sum16)~sum;
}
+#define _HAVE_ARCH_IPV6_CSUM 1
+struct in6_addr;
+extern __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
+ const struct in6_addr *daddr, __u32 len, unsigned short proto,
+ __wsum csum);
+
#endif /* _ASM_IA64_CHECKSUM_H */