user_data_to_tgt_data
int nr_elem = user_data_to_tgt_data(cqe->user_data);
__s32 data_len = user_data_to_tgt_data(cqe->user_data)
user_data_to_tgt_data(cqe->user_data),
unsigned seq = user_data_to_tgt_data(cqe->user_data);