ns-linux-util.h

struct tcp_sock {
__u32 snd_nxt; /* Next sequence we send */
__u32 snd_una; /* First byte we want an ack for */
__u32 snd_ssthresh; /* Slow start size threshold */
__u32 snd_cwnd; /* Sending congestion window */
__u16 snd_cwnd_cnt; /* Linear increase counter */
__u16 snd_cwnd_clamp; /* Do not allow snd_cwnd to grow above this */
__u32 snd_cwnd_stamp;
__u32 bytes_acked;
}