CSP

CP_CHP_PAYLOAD_SIZE_INT

.
#define CP_CHP_PAYLOAD_SIZE_INT(f, l, ivlen) ((l) -			\
				    CP_CHP_REALHEADER_SIZE_INT(f,ivlen) -	\
				    CP_CHP_TRAILER_SIZE(f) -		\
				    CP_CHP_HASH_SIZE(f))