asm-generic headers: Allow yet more arch overrides in checksum.h
arches can have more efficient implementation of these routines
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/include/asm-generic/checksum.h b/include/asm-generic/checksum.h
index c084767..59811df 100644
--- a/include/asm-generic/checksum.h
+++ b/include/asm-generic/checksum.h
@@ -38,12 +38,15 @@
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 @@
sum = (sum & 0xffff) + (sum >> 16);
return (__force __sum16)~sum;
}
+#endif
#ifndef csum_tcpudp_nofold
/*