bufq_addr_element
struct bufq_addr_element *lrg_buf_q_ele;
struct bufq_addr_element *small_buf_q_entry;
struct bufq_addr_element *buf_addr_ele = qdev->lrg_buf_q_virt_addr;
struct bufq_addr_element *lrg_buf_next_free;
(sizeof(struct lrg_buf_q_entry) / sizeof(struct bufq_addr_element))