core_tx_bd
.elem_size = sizeof(struct core_tx_bd),
struct core_tx_bd *start_bd = NULL;
start_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain);
struct core_tx_bd **p_bd = &p_curp->bds_set[frag_idx].txq_bd;
*p_bd = (struct core_tx_bd *)qed_chain_produce(p_tx_chain);
struct core_tx_bd *p_bd;
struct core_tx_bd *txq_bd;