+ uint8_t th_flags;
+ uint16_t th_win;
+ uint16_t th_sum;
+ uint16_t th_urp;
+
+#ifdef _GNU_SOURCE
+ }; };
+#endif
+};
+#endif
+
+#ifdef _GNU_SOURCE
+#define TCPI_OPT_TIMESTAMPS 1
+#define TCPI_OPT_SACK 2
+#define TCPI_OPT_WSCALE 4
+#define TCPI_OPT_ECN 8
+
+#define TCP_CA_Open 0
+#define TCP_CA_Disorder 1
+#define TCP_CA_CWR 2
+#define TCP_CA_Recovery 3
+#define TCP_CA_Loss 4
+
+struct tcp_info {
+ uint8_t tcpi_state;
+ uint8_t tcpi_ca_state;
+ uint8_t tcpi_retransmits;
+ uint8_t tcpi_probes;
+ uint8_t tcpi_backoff;
+ uint8_t tcpi_options;
+ uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
+ uint8_t tcpi_delivery_rate_app_limited : 1;
+ uint32_t tcpi_rto;
+ uint32_t tcpi_ato;
+ uint32_t tcpi_snd_mss;
+ uint32_t tcpi_rcv_mss;
+ uint32_t tcpi_unacked;
+ uint32_t tcpi_sacked;
+ uint32_t tcpi_lost;
+ uint32_t tcpi_retrans;
+ uint32_t tcpi_fackets;
+ uint32_t tcpi_last_data_sent;
+ uint32_t tcpi_last_ack_sent;
+ uint32_t tcpi_last_data_recv;
+ uint32_t tcpi_last_ack_recv;
+ uint32_t tcpi_pmtu;
+ uint32_t tcpi_rcv_ssthresh;
+ uint32_t tcpi_rtt;
+ uint32_t tcpi_rttvar;
+ uint32_t tcpi_snd_ssthresh;
+ uint32_t tcpi_snd_cwnd;
+ uint32_t tcpi_advmss;
+ uint32_t tcpi_reordering;
+ uint32_t tcpi_rcv_rtt;
+ uint32_t tcpi_rcv_space;
+ uint32_t tcpi_total_retrans;
+ uint64_t tcpi_pacing_rate;
+ uint64_t tcpi_max_pacing_rate;
+ uint64_t tcpi_bytes_acked;
+ uint64_t tcpi_bytes_received;
+ uint32_t tcpi_segs_out;
+ uint32_t tcpi_segs_in;
+ uint32_t tcpi_notsent_bytes;
+ uint32_t tcpi_min_rtt;
+ uint32_t tcpi_data_segs_in;
+ uint32_t tcpi_data_segs_out;
+ uint64_t tcpi_delivery_rate;
+ uint64_t tcpi_busy_time;
+ uint64_t tcpi_rwnd_limited;
+ uint64_t tcpi_sndbuf_limited;
+ uint32_t tcpi_delivered;
+ uint32_t tcpi_delivered_ce;
+ uint64_t tcpi_bytes_sent;
+ uint64_t tcpi_bytes_retrans;
+ uint32_t tcpi_dsack_dups;
+ uint32_t tcpi_reord_seen;