include/netinet/tcp.h

   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 };
  80
  81 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
  82 #define TCPOPT_EOL              0
  83 #define TCPOPT_NOP              1
  84 #define TCPOPT_MAXSEG           2
  85 #define TCPOPT_WINDOW           3
  86 #define TCPOPT_SACK_PERMITTED   4
  87 #define TCPOPT_SACK             5
  88 #define TCPOPT_TIMESTAMP        8
  89 #define TCPOLEN_SACK_PERMITTED  2
  90 #define TCPOLEN_WINDOW          3
  91 #define TCPOLEN_MAXSEG          4
  92 #define TCPOLEN_TIMESTAMP       10
  93
  94 #define SOL_TCP 6
  95
  96 #include <sys/types.h>
  97 #include <sys/socket.h>
  98 #include <stdint.h>
  99 #include <endian.h>
 100
 101 typedef uint32_t tcp_seq;
 102
 103 #define TH_FIN 0x01
 104 #define TH_SYN 0x02
 105 #define TH_RST 0x04
 106 #define TH_PUSH 0x08
 107 #define TH_ACK 0x10
 108 #define TH_URG 0x20
 109
 110 struct tcphdr {
 111 #ifdef _GNU_SOURCE
 112 #ifdef __GNUC__
 113         __extension__
 114 #endif
 115         union { struct {
 116
 117         uint16_t source;
 118         uint16_t dest;
 119         uint32_t seq;
 120         uint32_t ack_seq;
 121 #if __BYTE_ORDER == __LITTLE_ENDIAN
 122         uint16_t res1:4;
 123         uint16_t doff:4;
 124         uint16_t fin:1;
 125         uint16_t syn:1;
 126         uint16_t rst:1;
 127         uint16_t psh:1;
 128         uint16_t ack:1;
 129         uint16_t urg:1;
 130         uint16_t res2:2;
 131 #else
 132         uint16_t doff:4;
 133         uint16_t res1:4;
 134         uint16_t res2:2;
 135         uint16_t urg:1;
 136         uint16_t ack:1;
 137         uint16_t psh:1;
 138         uint16_t rst:1;
 139         uint16_t syn:1;
 140         uint16_t fin:1;
 141 #endif
 142         uint16_t window;
 143         uint16_t check;
 144         uint16_t urg_ptr;
 145
 146         }; struct {
 147 #endif
 148
 149         uint16_t th_sport;
 150         uint16_t th_dport;
 151         uint32_t th_seq;
 152         uint32_t th_ack;
 153 #if __BYTE_ORDER == __LITTLE_ENDIAN
 154         uint8_t th_x2:4;
 155         uint8_t th_off:4;
 156 #else
 157         uint8_t th_off:4;
 158         uint8_t th_x2:4;
 159 #endif
 160         uint8_t th_flags;
 161         uint16_t th_win;
 162         uint16_t th_sum;
 163         uint16_t th_urp;
 164
 165 #ifdef _GNU_SOURCE
 166         }; };
 167 #endif
 168 };
 169 #endif
 170
 171 #ifdef _GNU_SOURCE
 172 #define TCPI_OPT_TIMESTAMPS     1
 173 #define TCPI_OPT_SACK           2
 174 #define TCPI_OPT_WSCALE         4
 175 #define TCPI_OPT_ECN            8
 176
 177 #define TCP_CA_Open             0
 178 #define TCP_CA_Disorder         1
 179 #define TCP_CA_CWR              2
 180 #define TCP_CA_Recovery         3
 181 #define TCP_CA_Loss             4
 182
 183 struct tcp_info {
 184         uint8_t tcpi_state;
 185         uint8_t tcpi_ca_state;
 186         uint8_t tcpi_retransmits;
 187         uint8_t tcpi_probes;
 188         uint8_t tcpi_backoff;
 189         uint8_t tcpi_options;
 190         uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
 191         uint8_t tcpi_delivery_rate_app_limited : 1;
 192         uint32_t tcpi_rto;
 193         uint32_t tcpi_ato;
 194         uint32_t tcpi_snd_mss;
 195         uint32_t tcpi_rcv_mss;
 196         uint32_t tcpi_unacked;
 197         uint32_t tcpi_sacked;
 198         uint32_t tcpi_lost;
 199         uint32_t tcpi_retrans;
 200         uint32_t tcpi_fackets;
 201         uint32_t tcpi_last_data_sent;
 202         uint32_t tcpi_last_ack_sent;
 203         uint32_t tcpi_last_data_recv;
 204         uint32_t tcpi_last_ack_recv;
 205         uint32_t tcpi_pmtu;
 206         uint32_t tcpi_rcv_ssthresh;
 207         uint32_t tcpi_rtt;
 208         uint32_t tcpi_rttvar;
 209         uint32_t tcpi_snd_ssthresh;
 210         uint32_t tcpi_snd_cwnd;
 211         uint32_t tcpi_advmss;
 212         uint32_t tcpi_reordering;
 213         uint32_t tcpi_rcv_rtt;
 214         uint32_t tcpi_rcv_space;
 215         uint32_t tcpi_total_retrans;
 216         uint64_t tcpi_pacing_rate;
 217         uint64_t tcpi_max_pacing_rate;
 218         uint64_t tcpi_bytes_acked;
 219         uint64_t tcpi_bytes_received;
 220         uint32_t tcpi_segs_out;
 221         uint32_t tcpi_segs_in;
 222         uint32_t tcpi_notsent_bytes;
 223         uint32_t tcpi_min_rtt;
 224         uint32_t tcpi_data_segs_in;
 225         uint32_t tcpi_data_segs_out;
 226         uint64_t tcpi_delivery_rate;
 227         uint64_t tcpi_busy_time;
 228         uint64_t tcpi_rwnd_limited;
 229         uint64_t tcpi_sndbuf_limited;
 230         uint32_t tcpi_delivered;
 231         uint32_t tcpi_delivered_ce;
 232         uint64_t tcpi_bytes_sent;
 233         uint64_t tcpi_bytes_retrans;
 234         uint32_t tcpi_dsack_dups;
 235         uint32_t tcpi_reord_seen;
 236 };
 237
 238 #define TCP_MD5SIG_MAXKEYLEN    80
 239
 240 #define TCP_MD5SIG_FLAG_PREFIX  1
 241
 242 struct tcp_md5sig {
 243         struct sockaddr_storage tcpm_addr;
 244         uint8_t tcpm_flags;
 245         uint8_t tcpm_prefixlen;
 246         uint16_t tcpm_keylen;
 247         uint32_t __tcpm_pad;
 248         uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN];
 249 };
 250
 251 struct tcp_diag_md5sig {
 252         uint8_t tcpm_family;
 253         uint8_t tcpm_prefixlen;
 254         uint16_t tcpm_keylen;
 255         uint32_t tcpm_addr[4];
 256         uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN];
 257 };
 258
 259 #define TCP_REPAIR_ON           1
 260 #define TCP_REPAIR_OFF          0
 261 #define TCP_REPAIR_OFF_NO_WP    -1
 262
 263 struct tcp_repair_window {
 264         uint32_t snd_wl1;
 265         uint32_t snd_wnd;
 266         uint32_t max_window;
 267         uint32_t rcv_wnd;
 268         uint32_t rcv_wup;
 269 };
 270
 271 struct tcp_zerocopy_receive {
 272         uint64_t address;
 273         uint32_t length;
 274         uint32_t recv_skip_hint;
 275 };
 276
 277 #endif
 278
 279 #endif