low_seq           884 net/ipv4/tcp_input.c static void tcp_check_sack_reordering(struct sock *sk, const u32 low_seq,
low_seq           892 net/ipv4/tcp_input.c 	if (!before(low_seq, fack))
low_seq           895 net/ipv4/tcp_input.c 	metric = fack - low_seq;