ERI_RMD_BUFSIZE_SHIFT
len = (flags & ERI_RMD_BUFSIZE) >> ERI_RMD_BUFSIZE_SHIFT;
(uint64_t)(ERI_BUFSIZE << ERI_RMD_BUFSIZE_SHIFT) | ERI_RMD_OWN)
(uint64_t)(ERI_BUFSIZE << ERI_RMD_BUFSIZE_SHIFT) | ERI_RMD_OWN)
(uint64_t)(ERI_BUFSIZE << ERI_RMD_BUFSIZE_SHIFT) | ERI_RMD_OWN)