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