static __inline__ __wsum csum_tcpudp_nofold()

in include/asm/checksum.h [123:150]

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

static __inline__ __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
					    __u32 len, __u8 proto,
					    __wsum sum)
{

#ifdef __XTENSA_EL__
	unsigned long len_proto = (len + proto) << 8;
#elif defined(__XTENSA_EB__)
	unsigned long len_proto = len + proto;
#else
# error processor byte order undefined!
#endif
	__asm__("add	%0, %0, %1\n\t"
		"bgeu	%0, %1, 1f\n\t"
		"addi	%0, %0, 1\n\t"
		"1:\t"
		"add	%0, %0, %2\n\t"
		"bgeu	%0, %2, 1f\n\t"
		"addi	%0, %0, 1\n\t"
		"1:\t"
		"add	%0, %0, %3\n\t"
		"bgeu	%0, %3, 1f\n\t"
		"addi	%0, %0, 1\n\t"
		"1:\t"
		: "=r" (sum), "=r" (len_proto)
		: "r" (daddr), "r" (saddr), "1" (len_proto), "0" (sum));
	return sum;
}