return 0;
 }
 
-static inline int update_tcp_session(u32 index, u32 Ack)
+static inline int update_tcp_session(u32 index, u32 ack)
 {
-       if (Ack > ack_session_info[index].bigger_ack_num)
-               ack_session_info[index].bigger_ack_num = Ack;
+       if (ack > ack_session_info[index].bigger_ack_num)
+               ack_session_info[index].bigger_ack_num = ack;
        return 0;
 }
 
-static inline int add_tcp_pending_ack(u32 Ack, u32 Session_index,
+static inline int add_tcp_pending_ack(u32 ack, u32 Session_index,
                                       struct txq_entry_t *txqe)
 {
        total_acks++;
        if (pending_acks < MAX_PENDING_ACKS) {
-               pending_acks_info[pending_base + pending_acks].ack_num = Ack;
+               pending_acks_info[pending_base + pending_acks].ack_num = ack;
                pending_acks_info[pending_base + pending_acks].txqe = txqe;
                pending_acks_info[pending_base + pending_acks].session_index = Session_index;
                txqe->tcp_PendingAck_index = pending_base + pending_acks;