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 #define TCP_TX_DELAY 37 42 43 #define TCP_CM_INQ TCP_INQ 44 45 #define TCP_ESTABLISHED 1 46 #define TCP_SYN_SENT 2 47 #define TCP_SYN_RECV 3 48 #define TCP_FIN_WAIT1 4 49 #define TCP_FIN_WAIT2 5 50 #define TCP_TIME_WAIT 6 51 #define TCP_CLOSE 7 52 #define TCP_CLOSE_WAIT 8 53 #define TCP_LAST_ACK 9 54 #define TCP_LISTEN 10 55 #define TCP_CLOSING 11 56 57 enum { 58 TCP_NLA_PAD, 59 TCP_NLA_BUSY, 60 TCP_NLA_RWND_LIMITED, 61 TCP_NLA_SNDBUF_LIMITED, 62 TCP_NLA_DATA_SEGS_OUT, 63 TCP_NLA_TOTAL_RETRANS, 64 TCP_NLA_PACING_RATE, 65 TCP_NLA_DELIVERY_RATE, 66 TCP_NLA_SND_CWND, 67 TCP_NLA_REORDERING, 68 TCP_NLA_MIN_RTT, 69 TCP_NLA_RECUR_RETRANS, 70 TCP_NLA_DELIVERY_RATE_APP_LMT, 71 TCP_NLA_SNDQ_SIZE, 72 TCP_NLA_CA_STATE, 73 TCP_NLA_SND_SSTHRESH, 74 TCP_NLA_DELIVERED, 75 TCP_NLA_DELIVERED_CE, 76 TCP_NLA_BYTES_SENT, 77 TCP_NLA_BYTES_RETRANS, 78 TCP_NLA_DSACK_DUPS, 79 TCP_NLA_REORD_SEEN, 80 TCP_NLA_SRTT, 81 TCP_NLA_TIMEOUT_REHASH, 82 TCP_NLA_BYTES_NOTSENT, 83 }; 84 85 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) 86 #define TCPOPT_EOL 0 87 #define TCPOPT_NOP 1 88 #define TCPOPT_MAXSEG 2 89 #define TCPOPT_WINDOW 3 90 #define TCPOPT_SACK_PERMITTED 4 91 #define TCPOPT_SACK 5 92 #define TCPOPT_TIMESTAMP 8 93 #define TCPOLEN_SACK_PERMITTED 2 94 #define TCPOLEN_WINDOW 3 95 #define TCPOLEN_MAXSEG 4 96 #define TCPOLEN_TIMESTAMP 10 97 98 #define SOL_TCP 6 99 100 #include <sys/types.h> 101 #include <sys/socket.h> 102 #include <stdint.h> 103 104 typedef uint32_t tcp_seq; 105 106 #define TH_FIN 0x01 107 #define TH_SYN 0x02 108 #define TH_RST 0x04 109 #define TH_PUSH 0x08 110 #define TH_ACK 0x10 111 #define TH_URG 0x20 112 113 struct tcphdr { 114 #ifdef _GNU_SOURCE 115 #ifdef __GNUC__ 116 __extension__ 117 #endif 118 union { struct { 119 120 uint16_t source; 121 uint16_t dest; 122 uint32_t seq; 123 uint32_t ack_seq; 124 #if __BYTE_ORDER == __LITTLE_ENDIAN 125 uint16_t res1:4; 126 uint16_t doff:4; 127 uint16_t fin:1; 128 uint16_t syn:1; 129 uint16_t rst:1; 130 uint16_t psh:1; 131 uint16_t ack:1; 132 uint16_t urg:1; 133 uint16_t res2:2; 134 #else 135 uint16_t doff:4; 136 uint16_t res1:4; 137 uint16_t res2:2; 138 uint16_t urg:1; 139 uint16_t ack:1; 140 uint16_t psh:1; 141 uint16_t rst:1; 142 uint16_t syn:1; 143 uint16_t fin:1; 144 #endif 145 uint16_t window; 146 uint16_t check; 147 uint16_t urg_ptr; 148 149 }; struct { 150 #endif 151 152 uint16_t th_sport; 153 uint16_t th_dport; 154 uint32_t th_seq; 155 uint32_t th_ack; 156 #if __BYTE_ORDER == __LITTLE_ENDIAN 157 uint8_t th_x2:4; 158 uint8_t th_off:4; 159 #else 160 uint8_t th_off:4; 161 uint8_t th_x2:4; 162 #endif 163 uint8_t th_flags; 164 uint16_t th_win; 165 uint16_t th_sum; 166 uint16_t th_urp; 167 168 #ifdef _GNU_SOURCE 169 }; }; 170 #endif 171 }; 172 #endif 173 174 #ifdef _GNU_SOURCE 175 #define TCPI_OPT_TIMESTAMPS 1 176 #define TCPI_OPT_SACK 2 177 #define TCPI_OPT_WSCALE 4 178 #define TCPI_OPT_ECN 8 179 180 #define TCP_CA_Open 0 181 #define TCP_CA_Disorder 1 182 #define TCP_CA_CWR 2 183 #define TCP_CA_Recovery 3 184 #define TCP_CA_Loss 4 185 186 enum tcp_fastopen_client_fail { 187 TFO_STATUS_UNSPEC, 188 TFO_COOKIE_UNAVAILABLE, 189 TFO_DATA_NOT_ACKED, 190 TFO_SYN_RETRANSMITTED, 191 }; 192 193 struct tcp_info { 194 uint8_t tcpi_state; 195 uint8_t tcpi_ca_state; 196 uint8_t tcpi_retransmits; 197 uint8_t tcpi_probes; 198 uint8_t tcpi_backoff; 199 uint8_t tcpi_options; 200 uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4; 201 uint8_t tcpi_delivery_rate_app_limited : 1, tcpi_fastopen_client_fail : 2; 202 uint32_t tcpi_rto; 203 uint32_t tcpi_ato; 204 uint32_t tcpi_snd_mss; 205 uint32_t tcpi_rcv_mss; 206 uint32_t tcpi_unacked; 207 uint32_t tcpi_sacked; 208 uint32_t tcpi_lost; 209 uint32_t tcpi_retrans; 210 uint32_t tcpi_fackets; 211 uint32_t tcpi_last_data_sent; 212 uint32_t tcpi_last_ack_sent; 213 uint32_t tcpi_last_data_recv; 214 uint32_t tcpi_last_ack_recv; 215 uint32_t tcpi_pmtu; 216 uint32_t tcpi_rcv_ssthresh; 217 uint32_t tcpi_rtt; 218 uint32_t tcpi_rttvar; 219 uint32_t tcpi_snd_ssthresh; 220 uint32_t tcpi_snd_cwnd; 221 uint32_t tcpi_advmss; 222 uint32_t tcpi_reordering; 223 uint32_t tcpi_rcv_rtt; 224 uint32_t tcpi_rcv_space; 225 uint32_t tcpi_total_retrans; 226 uint64_t tcpi_pacing_rate; 227 uint64_t tcpi_max_pacing_rate; 228 uint64_t tcpi_bytes_acked; 229 uint64_t tcpi_bytes_received; 230 uint32_t tcpi_segs_out; 231 uint32_t tcpi_segs_in; 232 uint32_t tcpi_notsent_bytes; 233 uint32_t tcpi_min_rtt; 234 uint32_t tcpi_data_segs_in; 235 uint32_t tcpi_data_segs_out; 236 uint64_t tcpi_delivery_rate; 237 uint64_t tcpi_busy_time; 238 uint64_t tcpi_rwnd_limited; 239 uint64_t tcpi_sndbuf_limited; 240 uint32_t tcpi_delivered; 241 uint32_t tcpi_delivered_ce; 242 uint64_t tcpi_bytes_sent; 243 uint64_t tcpi_bytes_retrans; 244 uint32_t tcpi_dsack_dups; 245 uint32_t tcpi_reord_seen; 246 uint32_t tcpi_rcv_ooopack; 247 uint32_t tcpi_snd_wnd; 248 }; 249 250 #define TCP_MD5SIG_MAXKEYLEN 80 251 252 #define TCP_MD5SIG_FLAG_PREFIX 0x1 253 #define TCP_MD5SIG_FLAG_IFINDEX 0x2 254 255 struct tcp_md5sig { 256 struct sockaddr_storage tcpm_addr; 257 uint8_t tcpm_flags; 258 uint8_t tcpm_prefixlen; 259 uint16_t tcpm_keylen; 260 int tcpm_ifindex; 261 uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN]; 262 }; 263 264 struct tcp_diag_md5sig { 265 uint8_t tcpm_family; 266 uint8_t tcpm_prefixlen; 267 uint16_t tcpm_keylen; 268 uint32_t tcpm_addr[4]; 269 uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN]; 270 }; 271 272 #define TCP_REPAIR_ON 1 273 #define TCP_REPAIR_OFF 0 274 #define TCP_REPAIR_OFF_NO_WP -1 275 276 struct tcp_repair_window { 277 uint32_t snd_wl1; 278 uint32_t snd_wnd; 279 uint32_t max_window; 280 uint32_t rcv_wnd; 281 uint32_t rcv_wup; 282 }; 283 284 struct tcp_zerocopy_receive { 285 uint64_t address; 286 uint32_t length; 287 uint32_t recv_skip_hint; 288 uint32_t inq; 289 int32_t err; 290 }; 291 292 #endif 293 294 #endif 295