1 #ifndef _NETINET_TCP_H 2 #define _NETINET_TCP_H 3 4 #include <features.h> 5 6 #define TCP_NODELAY 1 7 #define TCP_MAXSEG 2 8 #define TCP_CORK 3 9 #define TCP_KEEPIDLE 4 10 #define TCP_KEEPINTVL 5 11 #define TCP_KEEPCNT 6 12 #define TCP_SYNCNT 7 13 #define TCP_LINGER2 8 14 #define TCP_DEFER_ACCEPT 9 15 #define TCP_WINDOW_CLAMP 10 16 #define TCP_INFO 11 17 #define TCP_QUICKACK 12 18 #define TCP_CONGESTION 13 19 #define TCP_MD5SIG 14 20 #define TCP_THIN_LINEAR_TIMEOUTS 16 21 #define TCP_THIN_DUPACK 17 22 #define TCP_USER_TIMEOUT 18 23 #define TCP_REPAIR 19 24 #define TCP_REPAIR_QUEUE 20 25 #define TCP_QUEUE_SEQ 21 26 #define TCP_REPAIR_OPTIONS 22 27 #define TCP_FASTOPEN 23 28 #define TCP_TIMESTAMP 24 29 #define TCP_NOTSENT_LOWAT 25 30 #define TCP_CC_INFO 26 31 #define TCP_SAVE_SYN 27 32 #define TCP_SAVED_SYN 28 33 #define TCP_REPAIR_WINDOW 29 34 #define TCP_FASTOPEN_CONNECT 30 35 #define TCP_ULP 31 36 #define TCP_MD5SIG_EXT 32 37 #define TCP_FASTOPEN_KEY 33 38 #define TCP_FASTOPEN_NO_COOKIE 34 39 #define TCP_ZEROCOPY_RECEIVE 35 40 #define TCP_INQ 36 41 42 #define TCP_CM_INQ TCP_INQ 43 44 #define TCP_ESTABLISHED 1 45 #define TCP_SYN_SENT 2 46 #define TCP_SYN_RECV 3 47 #define TCP_FIN_WAIT1 4 48 #define TCP_FIN_WAIT2 5 49 #define TCP_TIME_WAIT 6 50 #define TCP_CLOSE 7 51 #define TCP_CLOSE_WAIT 8 52 #define TCP_LAST_ACK 9 53 #define TCP_LISTEN 10 54 #define TCP_CLOSING 11 55 56 enum { 57 TCP_NLA_PAD, 58 TCP_NLA_BUSY, 59 TCP_NLA_RWND_LIMITED, 60 TCP_NLA_SNDBUF_LIMITED, 61 TCP_NLA_DATA_SEGS_OUT, 62 TCP_NLA_TOTAL_RETRANS, 63 TCP_NLA_PACING_RATE, 64 TCP_NLA_DELIVERY_RATE, 65 TCP_NLA_SND_CWND, 66 TCP_NLA_REORDERING, 67 TCP_NLA_MIN_RTT, 68 TCP_NLA_RECUR_RETRANS, 69 TCP_NLA_DELIVERY_RATE_APP_LMT, 70 TCP_NLA_SNDQ_SIZE, 71 TCP_NLA_CA_STATE, 72 TCP_NLA_SND_SSTHRESH, 73 TCP_NLA_DELIVERED, 74 TCP_NLA_DELIVERED_CE, 75 TCP_NLA_BYTES_SENT, 76 TCP_NLA_BYTES_RETRANS, 77 TCP_NLA_DSACK_DUPS, 78 TCP_NLA_REORD_SEEN, 79 TCP_NLA_SRTT, 80 }; 81 82 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) 83 #define TCPOPT_EOL 0 84 #define TCPOPT_NOP 1 85 #define TCPOPT_MAXSEG 2 86 #define TCPOPT_WINDOW 3 87 #define TCPOPT_SACK_PERMITTED 4 88 #define TCPOPT_SACK 5 89 #define TCPOPT_TIMESTAMP 8 90 #define TCPOLEN_SACK_PERMITTED 2 91 #define TCPOLEN_WINDOW 3 92 #define TCPOLEN_MAXSEG 4 93 #define TCPOLEN_TIMESTAMP 10 94 95 #define SOL_TCP 6 96 97 #include <sys/types.h> 98 #include <sys/socket.h> 99 #include <stdint.h> 100 #include <endian.h> 101 102 typedef uint32_t tcp_seq; 103 104 #define TH_FIN 0x01 105 #define TH_SYN 0x02 106 #define TH_RST 0x04 107 #define TH_PUSH 0x08 108 #define TH_ACK 0x10 109 #define TH_URG 0x20 110 111 struct tcphdr { 112 #ifdef _GNU_SOURCE 113 #ifdef __GNUC__ 114 __extension__ 115 #endif 116 union { struct { 117 118 uint16_t source; 119 uint16_t dest; 120 uint32_t seq; 121 uint32_t ack_seq; 122 #if __BYTE_ORDER == __LITTLE_ENDIAN 123 uint16_t res1:4; 124 uint16_t doff:4; 125 uint16_t fin:1; 126 uint16_t syn:1; 127 uint16_t rst:1; 128 uint16_t psh:1; 129 uint16_t ack:1; 130 uint16_t urg:1; 131 uint16_t res2:2; 132 #else 133 uint16_t doff:4; 134 uint16_t res1:4; 135 uint16_t res2:2; 136 uint16_t urg:1; 137 uint16_t ack:1; 138 uint16_t psh:1; 139 uint16_t rst:1; 140 uint16_t syn:1; 141 uint16_t fin:1; 142 #endif 143 uint16_t window; 144 uint16_t check; 145 uint16_t urg_ptr; 146 147 }; struct { 148 #endif 149 150 uint16_t th_sport; 151 uint16_t th_dport; 152 uint32_t th_seq; 153 uint32_t th_ack; 154 #if __BYTE_ORDER == __LITTLE_ENDIAN 155 uint8_t th_x2:4; 156 uint8_t th_off:4; 157 #else 158 uint8_t th_off:4; 159 uint8_t th_x2:4; 160 #endif 161 uint8_t th_flags; 162 uint16_t th_win; 163 uint16_t th_sum; 164 uint16_t th_urp; 165 166 #ifdef _GNU_SOURCE 167 }; }; 168 #endif 169 }; 170 #endif 171 172 #ifdef _GNU_SOURCE 173 #define TCPI_OPT_TIMESTAMPS 1 174 #define TCPI_OPT_SACK 2 175 #define TCPI_OPT_WSCALE 4 176 #define TCPI_OPT_ECN 8 177 178 #define TCP_CA_Open 0 179 #define TCP_CA_Disorder 1 180 #define TCP_CA_CWR 2 181 #define TCP_CA_Recovery 3 182 #define TCP_CA_Loss 4 183 184 struct tcp_info { 185 uint8_t tcpi_state; 186 uint8_t tcpi_ca_state; 187 uint8_t tcpi_retransmits; 188 uint8_t tcpi_probes; 189 uint8_t tcpi_backoff; 190 uint8_t tcpi_options; 191 uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4; 192 uint8_t tcpi_delivery_rate_app_limited : 1; 193 uint32_t tcpi_rto; 194 uint32_t tcpi_ato; 195 uint32_t tcpi_snd_mss; 196 uint32_t tcpi_rcv_mss; 197 uint32_t tcpi_unacked; 198 uint32_t tcpi_sacked; 199 uint32_t tcpi_lost; 200 uint32_t tcpi_retrans; 201 uint32_t tcpi_fackets; 202 uint32_t tcpi_last_data_sent; 203 uint32_t tcpi_last_ack_sent; 204 uint32_t tcpi_last_data_recv; 205 uint32_t tcpi_last_ack_recv; 206 uint32_t tcpi_pmtu; 207 uint32_t tcpi_rcv_ssthresh; 208 uint32_t tcpi_rtt; 209 uint32_t tcpi_rttvar; 210 uint32_t tcpi_snd_ssthresh; 211 uint32_t tcpi_snd_cwnd; 212 uint32_t tcpi_advmss; 213 uint32_t tcpi_reordering; 214 uint32_t tcpi_rcv_rtt; 215 uint32_t tcpi_rcv_space; 216 uint32_t tcpi_total_retrans; 217 uint64_t tcpi_pacing_rate; 218 uint64_t tcpi_max_pacing_rate; 219 uint64_t tcpi_bytes_acked; 220 uint64_t tcpi_bytes_received; 221 uint32_t tcpi_segs_out; 222 uint32_t tcpi_segs_in; 223 uint32_t tcpi_notsent_bytes; 224 uint32_t tcpi_min_rtt; 225 uint32_t tcpi_data_segs_in; 226 uint32_t tcpi_data_segs_out; 227 uint64_t tcpi_delivery_rate; 228 uint64_t tcpi_busy_time; 229 uint64_t tcpi_rwnd_limited; 230 uint64_t tcpi_sndbuf_limited; 231 uint32_t tcpi_delivered; 232 uint32_t tcpi_delivered_ce; 233 uint64_t tcpi_bytes_sent; 234 uint64_t tcpi_bytes_retrans; 235 uint32_t tcpi_dsack_dups; 236 uint32_t tcpi_reord_seen; 237 }; 238 239 #define TCP_MD5SIG_MAXKEYLEN 80 240 241 #define TCP_MD5SIG_FLAG_PREFIX 1 242 243 struct tcp_md5sig { 244 struct sockaddr_storage tcpm_addr; 245 uint8_t tcpm_flags; 246 uint8_t tcpm_prefixlen; 247 uint16_t tcpm_keylen; 248 uint32_t __tcpm_pad; 249 uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN]; 250 }; 251 252 struct tcp_diag_md5sig { 253 uint8_t tcpm_family; 254 uint8_t tcpm_prefixlen; 255 uint16_t tcpm_keylen; 256 uint32_t tcpm_addr[4]; 257 uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN]; 258 }; 259 260 #define TCP_REPAIR_ON 1 261 #define TCP_REPAIR_OFF 0 262 #define TCP_REPAIR_OFF_NO_WP -1 263 264 struct tcp_repair_window { 265 uint32_t snd_wl1; 266 uint32_t snd_wnd; 267 uint32_t max_window; 268 uint32_t rcv_wnd; 269 uint32_t rcv_wup; 270 }; 271 272 struct tcp_zerocopy_receive { 273 uint64_t address; 274 uint32_t length; 275 uint32_t recv_skip_hint; 276 }; 277 278 #endif 279 280 #endif 281