asm-generic headers: Allow yet more arch overrides in checksum.h

[thirdparty/linux.git] / include / asm-generic / checksum.h

diff --git a/include/asm-generic/checksum.h b/include/asm-generic/checksum.h
index c084767c88bcc78215f71a2758144754c17cf82d..59811df58c5b4575298a568319f960cf21291d45 100644 (file)
--- a/include/asm-generic/checksum.h
+++ b/include/asm-generic/checksum.h
@@ -38,12 +38,15 @@ extern __wsum csum_partial_copy_from_user(const void __user *src, void *dst,
        csum_partial_copy((src), (dst), (len), (sum))
 #endif
 
+#ifndef ip_fast_csum
 /*
  * This is a version of ip_compute_csum() optimized for IP headers,
  * which always checksum on 4 octet boundaries.
  */
 extern __sum16 ip_fast_csum(const void *iph, unsigned int ihl);
+#endif
 
+#ifndef csum_fold
 /*
  * Fold a partial checksum
  */
@@ -54,6 +57,7 @@ static inline __sum16 csum_fold(__wsum csum)
        sum = (sum & 0xffff) + (sum >> 16);
        return (__force __sum16)~sum;
 }
+#endif
 
 #ifndef csum_tcpudp_nofold
 /*