FLAG_DATA         110 net/ipv4/tcp_input.c #define FLAG_NOT_DUP		(FLAG_DATA|FLAG_WIN_UPDATE|FLAG_ACKED)
FLAG_DATA        3289 net/ipv4/tcp_input.c 			flag |= FLAG_DATA;
FLAG_DATA        4954 net/ipv4/tcp_input.c 				tcp_ack(sk, skb, FLAG_DATA);