1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _NETINET_TCP_H 30 #define _NETINET_TCP_H 31 32 #include <sys/cdefs.h> 33 #include <stdint.h> 34 35 #define tcphdr __kernel_tcphdr 36 #include <linux/tcp.h> 37 #undef tcphdr 38 39 __BEGIN_DECLS 40 41 struct tcphdr { 42 __extension__ union { 43 struct { 44 uint16_t th_sport; 45 uint16_t th_dport; 46 uint32_t th_seq; 47 uint32_t th_ack; 48 uint8_t th_x2:4; 49 uint8_t th_off:4; 50 uint8_t th_flags; 51 uint16_t th_win; 52 uint16_t th_sum; 53 uint16_t th_urp; 54 }; 55 struct { 56 uint16_t source; 57 uint16_t dest; 58 uint32_t seq; 59 uint32_t ack_seq; 60 uint16_t res1:4; 61 uint16_t doff:4; 62 uint16_t fin:1; 63 uint16_t syn:1; 64 uint16_t rst:1; 65 uint16_t psh:1; 66 uint16_t ack:1; 67 uint16_t urg:1; 68 uint16_t res2:2; 69 uint16_t window; 70 uint16_t check; 71 uint16_t urg_ptr; 72 }; 73 }; 74 }; 75 76 #define TH_FIN 0x01 77 #define TH_SYN 0x02 78 #define TH_RST 0x04 79 #define TH_PUSH 0x08 80 #define TH_ACK 0x10 81 #define TH_URG 0x20 82 83 enum { 84 TCP_ESTABLISHED = 1, 85 TCP_SYN_SENT, 86 TCP_SYN_RECV, 87 TCP_FIN_WAIT1, 88 TCP_FIN_WAIT2, 89 TCP_TIME_WAIT, 90 TCP_CLOSE, 91 TCP_CLOSE_WAIT, 92 TCP_LAST_ACK, 93 TCP_LISTEN, 94 TCP_CLOSING 95 }; 96 97 #define TCPOPT_EOL 0 98 #define TCPOPT_NOP 1 99 #define TCPOPT_MAXSEG 2 100 #define TCPOLEN_MAXSEG 4 101 #define TCPOPT_WINDOW 3 102 #define TCPOLEN_WINDOW 3 103 #define TCPOPT_SACK_PERMITTED 4 104 #define TCPOLEN_SACK_PERMITTED 2 105 #define TCPOPT_SACK 5 106 #define TCPOPT_TIMESTAMP 8 107 #define TCPOLEN_TIMESTAMP 10 108 #define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) 109 110 #define TCPOPT_TSTAMP_HDR (TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP) 111 112 __END_DECLS 113 114 #endif /* _NETINET_TCP_H */ 115