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 #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         TCP_NLA_EDT,
  84         TCP_NLA_TTL,
  85 };
  86
  87 #if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
  88 #define TCPOPT_EOL              0
  89 #define TCPOPT_NOP              1
  90 #define TCPOPT_MAXSEG           2
  91 #define TCPOPT_WINDOW           3
  92 #define TCPOPT_SACK_PERMITTED   4
  93 #define TCPOPT_SACK             5
  94 #define TCPOPT_TIMESTAMP        8
  95 #define TCPOLEN_SACK_PERMITTED  2
  96 #define TCPOLEN_WINDOW          3
  97 #define TCPOLEN_MAXSEG          4
  98 #define TCPOLEN_TIMESTAMP       10
  99
 100 #define SOL_TCP 6
 101
 102 #include <sys/types.h>
 103 #include <sys/socket.h>
 104 #include <stdint.h>
 105
 106 typedef uint32_t tcp_seq;
 107
 108 #define TH_FIN 0x01
 109 #define TH_SYN 0x02
 110 #define TH_RST 0x04
 111 #define TH_PUSH 0x08
 112 #define TH_ACK 0x10
 113 #define TH_URG 0x20
 114
 115 struct tcphdr {
 116 #ifdef _GNU_SOURCE
 117 #ifdef __GNUC__
 118         __extension__
 119 #endif
 120         union { struct {
 121
 122         uint16_t source;
 123         uint16_t dest;
 124         uint32_t seq;
 125         uint32_t ack_seq;
 126 #if __BYTE_ORDER == __LITTLE_ENDIAN
 127         uint16_t res1:4;
 128         uint16_t doff:4;
 129         uint16_t fin:1;
 130         uint16_t syn:1;
 131         uint16_t rst:1;
 132         uint16_t psh:1;
 133         uint16_t ack:1;
 134         uint16_t urg:1;
 135         uint16_t res2:2;
 136 #else
 137         uint16_t doff:4;
 138         uint16_t res1:4;
 139         uint16_t res2:2;
 140         uint16_t urg:1;
 141         uint16_t ack:1;
 142         uint16_t psh:1;
 143         uint16_t rst:1;
 144         uint16_t syn:1;
 145         uint16_t fin:1;
 146 #endif
 147         uint16_t window;
 148         uint16_t check;
 149         uint16_t urg_ptr;
 150
 151         }; struct {
 152 #endif
 153
 154         uint16_t th_sport;
 155         uint16_t th_dport;
 156         uint32_t th_seq;
 157         uint32_t th_ack;
 158 #if __BYTE_ORDER == __LITTLE_ENDIAN
 159         uint8_t th_x2:4;
 160         uint8_t th_off:4;
 161 #else
 162         uint8_t th_off:4;
 163         uint8_t th_x2:4;
 164 #endif
 165         uint8_t th_flags;
 166         uint16_t th_win;
 167         uint16_t th_sum;
 168         uint16_t th_urp;
 169
 170 #ifdef _GNU_SOURCE
 171         }; };
 172 #endif
 173 };
 174 #endif
 175
 176 #ifdef _GNU_SOURCE
 177 #define TCPI_OPT_TIMESTAMPS     1
 178 #define TCPI_OPT_SACK           2
 179 #define TCPI_OPT_WSCALE         4
 180 #define TCPI_OPT_ECN            8
 181
 182 #define TCP_CA_Open             0
 183 #define TCP_CA_Disorder         1
 184 #define TCP_CA_CWR              2
 185 #define TCP_CA_Recovery         3
 186 #define TCP_CA_Loss             4
 187
 188 enum tcp_fastopen_client_fail {
 189         TFO_STATUS_UNSPEC,
 190         TFO_COOKIE_UNAVAILABLE,
 191         TFO_DATA_NOT_ACKED,
 192         TFO_SYN_RETRANSMITTED,
 193 };
 194
 195 struct tcp_info {
 196         uint8_t tcpi_state;
 197         uint8_t tcpi_ca_state;
 198         uint8_t tcpi_retransmits;
 199         uint8_t tcpi_probes;
 200         uint8_t tcpi_backoff;
 201         uint8_t tcpi_options;
 202         uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
 203         uint8_t tcpi_delivery_rate_app_limited : 1, tcpi_fastopen_client_fail : 2;
 204         uint32_t tcpi_rto;
 205         uint32_t tcpi_ato;
 206         uint32_t tcpi_snd_mss;
 207         uint32_t tcpi_rcv_mss;
 208         uint32_t tcpi_unacked;
 209         uint32_t tcpi_sacked;
 210         uint32_t tcpi_lost;
 211         uint32_t tcpi_retrans;
 212         uint32_t tcpi_fackets;
 213         uint32_t tcpi_last_data_sent;
 214         uint32_t tcpi_last_ack_sent;
 215         uint32_t tcpi_last_data_recv;
 216         uint32_t tcpi_last_ack_recv;
 217         uint32_t tcpi_pmtu;
 218         uint32_t tcpi_rcv_ssthresh;
 219         uint32_t tcpi_rtt;
 220         uint32_t tcpi_rttvar;
 221         uint32_t tcpi_snd_ssthresh;
 222         uint32_t tcpi_snd_cwnd;
 223         uint32_t tcpi_advmss;
 224         uint32_t tcpi_reordering;
 225         uint32_t tcpi_rcv_rtt;
 226         uint32_t tcpi_rcv_space;
 227         uint32_t tcpi_total_retrans;
 228         uint64_t tcpi_pacing_rate;
 229         uint64_t tcpi_max_pacing_rate;
 230         uint64_t tcpi_bytes_acked;
 231         uint64_t tcpi_bytes_received;
 232         uint32_t tcpi_segs_out;
 233         uint32_t tcpi_segs_in;
 234         uint32_t tcpi_notsent_bytes;
 235         uint32_t tcpi_min_rtt;
 236         uint32_t tcpi_data_segs_in;
 237         uint32_t tcpi_data_segs_out;
 238         uint64_t tcpi_delivery_rate;
 239         uint64_t tcpi_busy_time;
 240         uint64_t tcpi_rwnd_limited;
 241         uint64_t tcpi_sndbuf_limited;
 242         uint32_t tcpi_delivered;
 243         uint32_t tcpi_delivered_ce;
 244         uint64_t tcpi_bytes_sent;
 245         uint64_t tcpi_bytes_retrans;
 246         uint32_t tcpi_dsack_dups;
 247         uint32_t tcpi_reord_seen;
 248         uint32_t tcpi_rcv_ooopack;
 249         uint32_t tcpi_snd_wnd;
 250 };
 251
 252 #define TCP_MD5SIG_MAXKEYLEN    80
 253
 254 #define TCP_MD5SIG_FLAG_PREFIX  0x1
 255 #define TCP_MD5SIG_FLAG_IFINDEX 0x2
 256
 257 struct tcp_md5sig {
 258         struct sockaddr_storage tcpm_addr;
 259         uint8_t tcpm_flags;
 260         uint8_t tcpm_prefixlen;
 261         uint16_t tcpm_keylen;
 262         int tcpm_ifindex;
 263         uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN];
 264 };
 265
 266 struct tcp_diag_md5sig {
 267         uint8_t tcpm_family;
 268         uint8_t tcpm_prefixlen;
 269         uint16_t tcpm_keylen;
 270         uint32_t tcpm_addr[4];
 271         uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN];
 272 };
 273
 274 #define TCP_REPAIR_ON           1
 275 #define TCP_REPAIR_OFF          0
 276 #define TCP_REPAIR_OFF_NO_WP    -1
 277
 278 struct tcp_repair_window {
 279         uint32_t snd_wl1;
 280         uint32_t snd_wnd;
 281         uint32_t max_window;
 282         uint32_t rcv_wnd;
 283         uint32_t rcv_wup;
 284 };
 285
 286 #define TCP_RECEIVE_ZEROCOPY_FLAG_TLB_CLEAN_HINT 0x1
 287
 288 struct tcp_zerocopy_receive {
 289         uint64_t address;
 290         uint32_t length;
 291         uint32_t recv_skip_hint;
 292         uint32_t inq;
 293         int32_t err;
 294         uint64_t copybuf_address;
 295         int32_t copybuf_len;
 296         uint32_t flags;
 297         uint64_t msg_control;
 298         uint64_t msg_controllen;
 299         uint32_t msg_flags;
 300         uint32_t reserved;
 301 };
 302
 303 #endif
 304
 305 #endif