static inline __wsum csum_tcpudp_nofold()

in include/asm/checksum.h [40:61]

• 21 lines of code
• 1 McCabe index (conditional complexity)

static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
					__u32 len, __u8 proto,
					__wsum sum)
{
	__asm__ __volatile__(
		"add	%0, %1, %0\n"
		"cmpltu	r8, %0, %1\n"
		"add	%0, %0, r8\n"	/* add carry */
		"add	%0, %2, %0\n"
		"cmpltu	r8, %0, %2\n"
		"add	%0, %0, r8\n"	/* add carry */
		"add	%0, %3, %0\n"
		"cmpltu	r8, %0, %3\n"
		"add	%0, %0, r8\n"	/* add carry */
		: "=r" (sum), "=r" (saddr)
		: "r" (daddr), "r" ((len + proto) << 8),
		  "0" (sum),
		  "1" (saddr)
		: "r8");

	return sum;
}