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 #pragma once 30 31 #include <sys/cdefs.h> 32 #include <stdint.h> 33 34 __BEGIN_DECLS 35 36 struct tcphdr { 37 __extension__ union { 38 struct { 39 uint16_t th_sport; 40 uint16_t th_dport; 41 uint32_t th_seq; 42 uint32_t th_ack; 43 uint8_t th_x2:4; 44 uint8_t th_off:4; 45 uint8_t th_flags; 46 uint16_t th_win; 47 uint16_t th_sum; 48 uint16_t th_urp; 49 }; 50 struct { 51 uint16_t source; 52 uint16_t dest; 53 uint32_t seq; 54 uint32_t ack_seq; 55 uint16_t res1:4; 56 uint16_t doff:4; 57 uint16_t fin:1; 58 uint16_t syn:1; 59 uint16_t rst:1; 60 uint16_t psh:1; 61 uint16_t ack:1; 62 uint16_t urg:1; 63 uint16_t res2:2; 64 uint16_t window; 65 uint16_t check; 66 uint16_t urg_ptr; 67 }; 68 }; 69 }; 70 71 __END_DECLS 72