+++ /dev/null
-/*
- * INET An implementation of the TCP/IP protocol suite for the LINUX
- * operating system. INET is implemented using the BSD Socket
- * interface as the means of communication with the user level.
- *
- * Definitions for the TCP protocol.
- *
- * Version: @(#)tcp.h 1.0.2 04/28/93
- *
- * Author: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#ifndef _LINUX_TCP_H
-#define _LINUX_TCP_H
-
-#include "linux.h"
-
-struct tcphdr {
- __u16 source;
- __u16 dest;
- __u32 seq;
- __u32 ack_seq;
-//#if defined(__LITTLE_ENDIAN_BITFIELD)
- __u16 res1:4,
- doff:4,
- fin:1,
- syn:1,
- rst:1,
- psh:1,
- ack:1,
- urg:1,
- ece:1,
- cwr:1;
-/*#elif defined(__BIG_ENDIAN_BITFIELD)
- __u16 doff:4,
- res1:4,
- cwr:1,
- ece:1,
- urg:1,
- ack:1,
- psh:1,
- rst:1,
- syn:1,
- fin:1;
-#else
-#error "Adjust your <asm/byteorder.h> defines"
-#endif */
- __u16 window;
- __u16 check;
- __u16 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 */
-
- TCP_MAX_STATES /* Leave at the end! */
-};
-
-#define TCP_STATE_MASK 0xF
-#define TCP_ACTION_FIN (1 << 7)
-
-enum {
- TCPF_ESTABLISHED = (1 << 1),
- TCPF_SYN_SENT = (1 << 2),
- TCPF_SYN_RECV = (1 << 3),
- TCPF_FIN_WAIT1 = (1 << 4),
- TCPF_FIN_WAIT2 = (1 << 5),
- TCPF_TIME_WAIT = (1 << 6),
- TCPF_CLOSE = (1 << 7),
- TCPF_CLOSE_WAIT = (1 << 8),
- TCPF_LAST_ACK = (1 << 9),
- TCPF_LISTEN = (1 << 10),
- TCPF_CLOSING = (1 << 11)
-};
-
-/*
- * The union cast uses a gcc extension to avoid aliasing problems
- * (union is compatible to any of its members)
- * This means this part of the code is -fstrict-aliasing safe now.
- */
-union tcp_word_hdr {
- struct tcphdr hdr;
- __u32 words[5];
-};
-
-#define tcp_flag_word(tp) ( ((union tcp_word_hdr *)(tp))->words [3])
-
-enum {
- TCP_FLAG_CWR = 0x00800000, // __constant_htonl(0x00800000),
- TCP_FLAG_ECE = 0x00400000, //__constant_htonl(0x00400000),
- TCP_FLAG_URG = 0x00200000, //__constant_htonl(0x00200000),
- TCP_FLAG_ACK = 0x00100000, //__constant_htonl(0x00100000),
- TCP_FLAG_PSH = 0x00080000, //__constant_htonl(0x00080000),
- TCP_FLAG_RST = 0x00040000, //__constant_htonl(0x00040000),
- TCP_FLAG_SYN = 0x00020000, //__constant_htonl(0x00020000),
- TCP_FLAG_FIN = 0x00010000, //__constant_htonl(0x00010000),
- TCP_RESERVED_BITS = 0x0F000000, //__constant_htonl(0x0F000000),
- TCP_DATA_OFFSET = 0xF0000000, //__constant_htonl(0xF0000000)
-};
-
-/* TCP socket options */
-#define TCP_NODELAY 1 /* Turn off Nagle's algorithm. */
-#define TCP_MAXSEG 2 /* Limit MSS */
-#define TCP_CORK 3 /* Never send partially complete segments */
-#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 /* Block/reenable quick acks */
-
-#define TCPI_OPT_TIMESTAMPS 1
-#define TCPI_OPT_SACK 2
-#define TCPI_OPT_WSCALE 4
-#define TCPI_OPT_ECN 8
-
-enum tcp_ca_state
-{
- TCP_CA_Open = 0,
-#define TCPF_CA_Open (1<<TCP_CA_Open)
- TCP_CA_Disorder = 1,
-#define TCPF_CA_Disorder (1<<TCP_CA_Disorder)
- TCP_CA_CWR = 2,
-#define TCPF_CA_CWR (1<<TCP_CA_CWR)
- TCP_CA_Recovery = 3,
-#define TCPF_CA_Recovery (1<<TCP_CA_Recovery)
- TCP_CA_Loss = 4
-#define TCPF_CA_Loss (1<<TCP_CA_Loss)
-};
-
-struct tcp_info
-{
- __u8 tcpi_state;
- __u8 tcpi_ca_state;
- __u8 tcpi_retransmits;
- __u8 tcpi_probes;
- __u8 tcpi_backoff;
- __u8 tcpi_options;
- __u8 tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
-
- __u32 tcpi_rto;
- __u32 tcpi_ato;
- __u32 tcpi_snd_mss;
- __u32 tcpi_rcv_mss;
-
- __u32 tcpi_unacked;
- __u32 tcpi_sacked;
- __u32 tcpi_lost;
- __u32 tcpi_retrans;
- __u32 tcpi_fackets;
-
- /* Times. */
- __u32 tcpi_last_data_sent;
- __u32 tcpi_last_ack_sent; /* Not remembered, sorry. */
- __u32 tcpi_last_data_recv;
- __u32 tcpi_last_ack_recv;
-
- /* Metrics. */
- __u32 tcpi_pmtu;
- __u32 tcpi_rcv_ssthresh;
- __u32 tcpi_rtt;
- __u32 tcpi_rttvar;
- __u32 tcpi_snd_ssthresh;
- __u32 tcpi_snd_cwnd;
- __u32 tcpi_advmss;
- __u32 tcpi_reordering;
-};
-
-#endif /* _LINUX_TCP_H */
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