[398] | 1 | #ifndef _NETINET_TCP_H
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| 2 | #define _NETINET_TCP_H
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| 3 |
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| 4 | #include <features.h>
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| 5 |
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| 6 | #define TCP_NODELAY 1
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| 7 | #define TCP_MAXSEG 2
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| 8 | #define TCP_CORK 3
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| 9 | #define TCP_KEEPIDLE 4
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| 10 | #define TCP_KEEPINTVL 5
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| 11 | #define TCP_KEEPCNT 6
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| 12 | #define TCP_SYNCNT 7
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| 13 | #define TCP_LINGER2 8
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| 14 | #define TCP_DEFER_ACCEPT 9
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| 15 | #define TCP_WINDOW_CLAMP 10
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| 16 | #define TCP_INFO 11
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| 17 | #define TCP_QUICKACK 12
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| 18 | #define TCP_CONGESTION 13
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| 19 | #define TCP_MD5SIG 14
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| 20 | #define TCP_THIN_LINEAR_TIMEOUTS 16
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| 21 | #define TCP_THIN_DUPACK 17
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| 22 | #define TCP_USER_TIMEOUT 18
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| 23 | #define TCP_REPAIR 19
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| 24 | #define TCP_REPAIR_QUEUE 20
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| 25 | #define TCP_QUEUE_SEQ 21
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| 26 | #define TCP_REPAIR_OPTIONS 22
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| 27 | #define TCP_FASTOPEN 23
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| 28 | #define TCP_TIMESTAMP 24
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| 29 | #define TCP_NOTSENT_LOWAT 25
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| 30 | #define TCP_CC_INFO 26
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| 31 | #define TCP_SAVE_SYN 27
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| 32 | #define TCP_SAVED_SYN 28
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| 33 | #define TCP_REPAIR_WINDOW 29
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| 34 |
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| 35 | #define TCP_ESTABLISHED 1
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| 36 | #define TCP_SYN_SENT 2
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| 37 | #define TCP_SYN_RECV 3
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| 38 | #define TCP_FIN_WAIT1 4
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| 39 | #define TCP_FIN_WAIT2 5
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| 40 | #define TCP_TIME_WAIT 6
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| 41 | #define TCP_CLOSE 7
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| 42 | #define TCP_CLOSE_WAIT 8
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| 43 | #define TCP_LAST_ACK 9
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| 44 | #define TCP_LISTEN 10
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| 45 | #define TCP_CLOSING 11
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| 46 |
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| 47 | #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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| 48 | #define TCPOPT_EOL 0
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| 49 | #define TCPOPT_NOP 1
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| 50 | #define TCPOPT_MAXSEG 2
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| 51 | #define TCPOPT_WINDOW 3
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| 52 | #define TCPOPT_SACK_PERMITTED 4
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| 53 | #define TCPOPT_SACK 5
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| 54 | #define TCPOPT_TIMESTAMP 8
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| 55 | #define TCPOLEN_SACK_PERMITTED 2
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| 56 | #define TCPOLEN_WINDOW 3
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| 57 | #define TCPOLEN_MAXSEG 4
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| 58 | #define TCPOLEN_TIMESTAMP 10
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| 59 |
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| 60 | #define SOL_TCP 6
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| 61 |
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| 62 | #include <sys/types.h>
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| 63 | #include <sys/socket.h>
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| 64 | #include <stdint.h>
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| 65 | #include <endian.h>
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| 66 |
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| 67 | typedef uint32_t tcp_seq;
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| 68 |
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| 69 | #define TH_FIN 0x01
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| 70 | #define TH_SYN 0x02
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| 71 | #define TH_RST 0x04
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| 72 | #define TH_PUSH 0x08
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| 73 | #define TH_ACK 0x10
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| 74 | #define TH_URG 0x20
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| 75 |
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| 76 | struct tcphdr {
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| 77 | #ifdef _GNU_SOURCE
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| 78 | #ifdef __GNUC__
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| 79 | __extension__
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| 80 | #endif
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| 81 | union { struct {
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| 82 |
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| 83 | uint16_t source;
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| 84 | uint16_t dest;
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| 85 | uint32_t seq;
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| 86 | uint32_t ack_seq;
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| 87 | #if __BYTE_ORDER == __LITTLE_ENDIAN
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| 88 | uint16_t res1:4;
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| 89 | uint16_t doff:4;
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| 90 | uint16_t fin:1;
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| 91 | uint16_t syn:1;
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| 92 | uint16_t rst:1;
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| 93 | uint16_t psh:1;
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| 94 | uint16_t ack:1;
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| 95 | uint16_t urg:1;
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| 96 | uint16_t res2:2;
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| 97 | #else
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| 98 | uint16_t doff:4;
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| 99 | uint16_t res1:4;
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| 100 | uint16_t res2:2;
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| 101 | uint16_t urg:1;
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| 102 | uint16_t ack:1;
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| 103 | uint16_t psh:1;
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| 104 | uint16_t rst:1;
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| 105 | uint16_t syn:1;
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| 106 | uint16_t fin:1;
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| 107 | #endif
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| 108 | uint16_t window;
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| 109 | uint16_t check;
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| 110 | uint16_t urg_ptr;
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| 111 |
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| 112 | }; struct {
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| 113 | #endif
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| 114 |
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| 115 | uint16_t th_sport;
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| 116 | uint16_t th_dport;
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| 117 | uint32_t th_seq;
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| 118 | uint32_t th_ack;
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| 119 | #if __BYTE_ORDER == __LITTLE_ENDIAN
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| 120 | uint8_t th_x2:4;
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| 121 | uint8_t th_off:4;
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| 122 | #else
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| 123 | uint8_t th_off:4;
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| 124 | uint8_t th_x2:4;
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| 125 | #endif
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| 126 | uint8_t th_flags;
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| 127 | uint16_t th_win;
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| 128 | uint16_t th_sum;
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| 129 | uint16_t th_urp;
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| 130 |
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| 131 | #ifdef _GNU_SOURCE
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| 132 | }; };
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| 133 | #endif
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| 134 | };
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| 135 | #endif
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| 136 |
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| 137 | #ifdef _GNU_SOURCE
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| 138 | #define TCPI_OPT_TIMESTAMPS 1
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| 139 | #define TCPI_OPT_SACK 2
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| 140 | #define TCPI_OPT_WSCALE 4
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| 141 | #define TCPI_OPT_ECN 8
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| 142 |
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| 143 | #define TCP_CA_Open 0
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| 144 | #define TCP_CA_Disorder 1
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| 145 | #define TCP_CA_CWR 2
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| 146 | #define TCP_CA_Recovery 3
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| 147 | #define TCP_CA_Loss 4
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| 148 |
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| 149 | struct tcp_info {
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| 150 | uint8_t tcpi_state;
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| 151 | uint8_t tcpi_ca_state;
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| 152 | uint8_t tcpi_retransmits;
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| 153 | uint8_t tcpi_probes;
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| 154 | uint8_t tcpi_backoff;
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| 155 | uint8_t tcpi_options;
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| 156 | uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
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| 157 | uint8_t tcpi_delivery_rate_app_limited : 1;
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| 158 | uint32_t tcpi_rto;
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| 159 | uint32_t tcpi_ato;
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| 160 | uint32_t tcpi_snd_mss;
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| 161 | uint32_t tcpi_rcv_mss;
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| 162 | uint32_t tcpi_unacked;
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| 163 | uint32_t tcpi_sacked;
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| 164 | uint32_t tcpi_lost;
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| 165 | uint32_t tcpi_retrans;
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| 166 | uint32_t tcpi_fackets;
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| 167 | uint32_t tcpi_last_data_sent;
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| 168 | uint32_t tcpi_last_ack_sent;
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| 169 | uint32_t tcpi_last_data_recv;
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| 170 | uint32_t tcpi_last_ack_recv;
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| 171 | uint32_t tcpi_pmtu;
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| 172 | uint32_t tcpi_rcv_ssthresh;
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| 173 | uint32_t tcpi_rtt;
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| 174 | uint32_t tcpi_rttvar;
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| 175 | uint32_t tcpi_snd_ssthresh;
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| 176 | uint32_t tcpi_snd_cwnd;
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| 177 | uint32_t tcpi_advmss;
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| 178 | uint32_t tcpi_reordering;
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| 179 | uint32_t tcpi_rcv_rtt;
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| 180 | uint32_t tcpi_rcv_space;
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| 181 | uint32_t tcpi_total_retrans;
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| 182 | uint64_t tcpi_pacing_rate;
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| 183 | uint64_t tcpi_max_pacing_rate;
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| 184 | uint64_t tcpi_bytes_acked;
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| 185 | uint64_t tcpi_bytes_received;
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| 186 | uint32_t tcpi_segs_out;
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| 187 | uint32_t tcpi_segs_in;
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| 188 | uint32_t tcpi_notsent_bytes;
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| 189 | uint32_t tcpi_min_rtt;
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| 190 | uint32_t tcpi_data_segs_in;
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| 191 | uint32_t tcpi_data_segs_out;
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| 192 | uint64_t tcpi_delivery_rate;
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| 193 | };
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| 194 |
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| 195 | #define TCP_MD5SIG_MAXKEYLEN 80
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| 196 |
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| 197 | struct tcp_md5sig {
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| 198 | struct sockaddr_storage tcpm_addr;
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| 199 | uint16_t __tcpm_pad1;
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| 200 | uint16_t tcpm_keylen;
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| 201 | uint32_t __tcpm_pad2;
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| 202 | uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN];
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| 203 | };
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| 204 |
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| 205 | struct tcp_repair_window {
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| 206 | uint32_t snd_wl1;
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| 207 | uint32_t snd_wnd;
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| 208 | uint32_t max_window;
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| 209 | uint32_t rcv_wnd;
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| 210 | uint32_t rcv_wup;
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| 211 | };
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| 212 |
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| 213 | #endif
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| 214 |
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| 215 | #endif
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