FLAG_FORWARD_PROGRESS 113 net/ipv4/tcp_input.c #define FLAG_ANY_PROGRESS (FLAG_FORWARD_PROGRESS|FLAG_SND_UNA_ADVANCED) FLAG_FORWARD_PROGRESS 3197 net/ipv4/tcp_input.c (!(flag & FLAG_FORWARD_PROGRESS) || FLAG_FORWARD_PROGRESS 3201 net/ipv4/tcp_input.c if (!(flag & FLAG_FORWARD_PROGRESS) && FLAG_FORWARD_PROGRESS 3335 net/ipv4/tcp_input.c if ((flag & FLAG_FORWARD_PROGRESS) || !(flag & FLAG_NOT_DUP))