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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