TCPOPT_WINDOW 3403 net/ipv4/tcp_input.c case TCPOPT_WINDOW: TCPOPT_WINDOW 411 net/ipv4/tcp_output.c (TCPOPT_WINDOW << 16) | TCPOPT_WINDOW 404 net/netfilter/nf_conntrack_proto_tcp.c else if (opcode == TCPOPT_WINDOW