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/lib/checksum.c b/lib/checksum.c
index 12dceb2..129775e 100644
--- a/lib/checksum.c
+++ b/lib/checksum.c
@@ -102,6 +102,7 @@
}
#endif
+#ifndef ip_fast_csum
/*
* This is a version of ip_compute_csum() optimized for IP headers,
* which always checksum on 4 octet boundaries.
@@ -111,6 +112,7 @@
return (__force __sum16)~do_csum(iph, ihl*4);
}
EXPORT_SYMBOL(ip_fast_csum);
+#endif
/*
* computes the checksum of a memory block at buff, length len,