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Diffstat (limited to 'REORG.TODO/sysdeps/gnu/netinet/tcp.h')
| -rw-r--r-- | REORG.TODO/sysdeps/gnu/netinet/tcp.h | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/gnu/netinet/tcp.h b/REORG.TODO/sysdeps/gnu/netinet/tcp.h new file mode 100644 index 0000000000..af94b8e82c --- /dev/null +++ b/REORG.TODO/sysdeps/gnu/netinet/tcp.h @@ -0,0 +1,324 @@ +/* + * Copyright (c) 1982, 1986, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)tcp.h 8.1 (Berkeley) 6/10/93 + */ + +#ifndef _NETINET_TCP_H +#define _NETINET_TCP_H 1 + +#include <features.h> + +/* + * User-settable options (used with setsockopt). + */ +#define TCP_NODELAY 1 /* Don't delay send to coalesce packets */ +#define TCP_MAXSEG 2 /* Set maximum segment size */ +#define TCP_CORK 3 /* Control sending of partial frames */ +#define TCP_KEEPIDLE 4 /* Start keeplives after this period */ +#define TCP_KEEPINTVL 5 /* Interval between keepalives */ +#define TCP_KEEPCNT 6 /* Number of keepalives before death */ +#define TCP_SYNCNT 7 /* Number of SYN retransmits */ +#define TCP_LINGER2 8 /* Life time of orphaned FIN-WAIT-2 state */ +#define TCP_DEFER_ACCEPT 9 /* Wake up listener only when data arrive */ +#define TCP_WINDOW_CLAMP 10 /* Bound advertised window */ +#define TCP_INFO 11 /* Information about this connection. */ +#define TCP_QUICKACK 12 /* Bock/reenable quick ACKs. */ +#define TCP_CONGESTION 13 /* Congestion control algorithm. */ +#define TCP_MD5SIG 14 /* TCP MD5 Signature (RFC2385) */ +#define TCP_COOKIE_TRANSACTIONS 15 /* TCP Cookie Transactions */ +#define TCP_THIN_LINEAR_TIMEOUTS 16 /* Use linear timeouts for thin streams*/ +#define TCP_THIN_DUPACK 17 /* Fast retrans. after 1 dupack */ +#define TCP_USER_TIMEOUT 18 /* How long for loss retry before timeout */ +#define TCP_REPAIR 19 /* TCP sock is under repair right now */ +#define TCP_REPAIR_QUEUE 20 /* Set TCP queue to repair */ +#define TCP_QUEUE_SEQ 21 /* Set sequence number of repaired queue. */ +#define TCP_REPAIR_OPTIONS 22 /* Repair TCP connection options */ +#define TCP_FASTOPEN 23 /* Enable FastOpen on listeners */ +#define TCP_TIMESTAMP 24 /* TCP time stamp */ +#define TCP_NOTSENT_LOWAT 25 /* Limit number of unsent bytes in + write queue. */ +#define TCP_CC_INFO 26 /* Get Congestion Control + (optional) info. */ +#define TCP_SAVE_SYN 27 /* Record SYN headers for new + connections. */ +#define TCP_SAVED_SYN 28 /* Get SYN headers recorded for + connection. */ +#define TCP_REPAIR_WINDOW 29 /* Get/set window parameters. */ +#define TCP_FASTOPEN_CONNECT 30 /* Attempt FastOpen with connect. */ + +#ifdef __USE_MISC +# include <sys/types.h> +# include <sys/socket.h> +# include <stdint.h> + +typedef uint32_t tcp_seq; +/* + * TCP header. + * Per RFC 793, September, 1981. + */ +struct tcphdr + { + __extension__ union + { + struct + { + uint16_t th_sport; /* source port */ + uint16_t th_dport; /* destination port */ + tcp_seq th_seq; /* sequence number */ + tcp_seq th_ack; /* acknowledgement number */ +# if __BYTE_ORDER == __LITTLE_ENDIAN + uint8_t th_x2:4; /* (unused) */ + uint8_t th_off:4; /* data offset */ +# endif +# if __BYTE_ORDER == __BIG_ENDIAN + uint8_t th_off:4; /* data offset */ + uint8_t th_x2:4; /* (unused) */ +# endif + uint8_t th_flags; +# define TH_FIN 0x01 +# define TH_SYN 0x02 +# define TH_RST 0x04 +# define TH_PUSH 0x08 +# define TH_ACK 0x10 +# define TH_URG 0x20 + uint16_t th_win; /* window */ + uint16_t th_sum; /* checksum */ + uint16_t th_urp; /* urgent pointer */ + }; + struct + { + uint16_t source; + uint16_t dest; + uint32_t seq; + uint32_t ack_seq; +# if __BYTE_ORDER == __LITTLE_ENDIAN + uint16_t res1:4; + uint16_t doff:4; + uint16_t fin:1; + uint16_t syn:1; + uint16_t rst:1; + uint16_t psh:1; + uint16_t ack:1; + uint16_t urg:1; + uint16_t res2:2; +# elif __BYTE_ORDER == __BIG_ENDIAN + uint16_t doff:4; + uint16_t res1:4; + uint16_t res2:2; + uint16_t urg:1; + uint16_t ack:1; + uint16_t psh:1; + uint16_t rst:1; + uint16_t syn:1; + uint16_t fin:1; +# else +# error "Adjust your <bits/endian.h> defines" +# endif + uint16_t window; + uint16_t check; + uint16_t urg_ptr; + }; + }; +}; + +enum +{ + TCP_ESTABLISHED = 1, + TCP_SYN_SENT, + TCP_SYN_RECV, + TCP_FIN_WAIT1, + TCP_FIN_WAIT2, + TCP_TIME_WAIT, + TCP_CLOSE, + TCP_CLOSE_WAIT, + TCP_LAST_ACK, + TCP_LISTEN, + TCP_CLOSING /* now a valid state */ +}; + +# define TCPOPT_EOL 0 +# define TCPOPT_NOP 1 +# define TCPOPT_MAXSEG 2 +# define TCPOLEN_MAXSEG 4 +# define TCPOPT_WINDOW 3 +# define TCPOLEN_WINDOW 3 +# define TCPOPT_SACK_PERMITTED 4 /* Experimental */ +# define TCPOLEN_SACK_PERMITTED 2 +# define TCPOPT_SACK 5 /* Experimental */ +# define TCPOPT_TIMESTAMP 8 +# define TCPOLEN_TIMESTAMP 10 +# define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */ + +# define TCPOPT_TSTAMP_HDR \ + (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP) + +/* + * Default maximum segment size for TCP. + * With an IP MSS of 576, this is 536, + * but 512 is probably more convenient. + * This should be defined as MIN(512, IP_MSS - sizeof (struct tcpiphdr)). + */ +# define TCP_MSS 512 + +# define TCP_MAXWIN 65535 /* largest value for (unscaled) window */ + +# define TCP_MAX_WINSHIFT 14 /* maximum window shift */ + +# define SOL_TCP 6 /* TCP level */ + + +# define TCPI_OPT_TIMESTAMPS 1 +# define TCPI_OPT_SACK 2 +# define TCPI_OPT_WSCALE 4 +# define TCPI_OPT_ECN 8 /* ECN was negociated at TCP session init */ +# define TCPI_OPT_ECN_SEEN 16 /* we received at least one packet with ECT */ +# define TCPI_OPT_SYN_DATA 32 /* SYN-ACK acked data in SYN sent or rcvd */ + +/* Values for tcpi_state. */ +enum tcp_ca_state +{ + TCP_CA_Open = 0, + TCP_CA_Disorder = 1, + TCP_CA_CWR = 2, + TCP_CA_Recovery = 3, + TCP_CA_Loss = 4 +}; + +struct tcp_info +{ + uint8_t tcpi_state; + uint8_t tcpi_ca_state; + uint8_t tcpi_retransmits; + uint8_t tcpi_probes; + uint8_t tcpi_backoff; + uint8_t tcpi_options; + uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4; + + uint32_t tcpi_rto; + uint32_t tcpi_ato; + uint32_t tcpi_snd_mss; + uint32_t tcpi_rcv_mss; + + uint32_t tcpi_unacked; + uint32_t tcpi_sacked; + uint32_t tcpi_lost; + uint32_t tcpi_retrans; + uint32_t tcpi_fackets; + + /* Times. */ + uint32_t tcpi_last_data_sent; + uint32_t tcpi_last_ack_sent; /* Not remembered, sorry. */ + uint32_t tcpi_last_data_recv; + uint32_t tcpi_last_ack_recv; + + /* Metrics. */ + uint32_t tcpi_pmtu; + uint32_t tcpi_rcv_ssthresh; + uint32_t tcpi_rtt; + uint32_t tcpi_rttvar; + uint32_t tcpi_snd_ssthresh; + uint32_t tcpi_snd_cwnd; + uint32_t tcpi_advmss; + uint32_t tcpi_reordering; + + uint32_t tcpi_rcv_rtt; + uint32_t tcpi_rcv_space; + + uint32_t tcpi_total_retrans; +}; + + +/* For TCP_MD5SIG socket option. */ +#define TCP_MD5SIG_MAXKEYLEN 80 + +struct tcp_md5sig +{ + struct sockaddr_storage tcpm_addr; /* Address associated. */ + uint16_t __tcpm_pad1; /* Zero. */ + uint16_t tcpm_keylen; /* Key length. */ + uint32_t __tcpm_pad2; /* Zero. */ + uint8_t tcpm_key[TCP_MD5SIG_MAXKEYLEN]; /* Key (binary). */ +}; + +/* For socket repair options. */ +struct tcp_repair_opt +{ + uint32_t opt_code; + uint32_t opt_val; +}; + +/* Queue to repair, for TCP_REPAIR_QUEUE. */ +enum +{ + TCP_NO_QUEUE, + TCP_RECV_QUEUE, + TCP_SEND_QUEUE, + TCP_QUEUES_NR, +}; + +/* For cookie transactions socket options. */ +#define TCP_COOKIE_MIN 8 /* 64-bits */ +#define TCP_COOKIE_MAX 16 /* 128-bits */ +#define TCP_COOKIE_PAIR_SIZE (2*TCP_COOKIE_MAX) + +/* Flags for both getsockopt and setsockopt */ +#define TCP_COOKIE_IN_ALWAYS (1 << 0) /* Discard SYN without cookie */ +#define TCP_COOKIE_OUT_NEVER (1 << 1) /* Prohibit outgoing cookies, + * supercedes everything. */ + +/* Flags for getsockopt */ +#define TCP_S_DATA_IN (1 << 2) /* Was data received? */ +#define TCP_S_DATA_OUT (1 << 3) /* Was data sent? */ + +#define TCP_MSS_DEFAULT 536U /* IPv4 (RFC1122, RFC2581) */ +#define TCP_MSS_DESIRED 1220U /* IPv6 (tunneled), EDNS0 (RFC3226) */ + +struct tcp_cookie_transactions +{ + uint16_t tcpct_flags; + uint8_t __tcpct_pad1; + uint8_t tcpct_cookie_desired; + uint16_t tcpct_s_data_desired; + uint16_t tcpct_used; + uint8_t tcpct_value[TCP_MSS_DEFAULT]; +}; + +/* For use with TCP_REPAIR_WINDOW. */ +struct tcp_repair_window +{ + uint32_t snd_wl1; + uint32_t snd_wnd; + uint32_t max_window; + uint32_t rcv_wnd; + uint32_t rcv_wup; +}; + +#endif /* Misc. */ + +#endif /* netinet/tcp.h */ |