1 | /**
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2 | * @file
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3 | * Base TCP API definitions shared by TCP and ALTCP\n
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4 | * See also @ref tcp_raw
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5 | */
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6 |
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7 | /*
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8 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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9 | * All rights reserved.
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10 | *
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11 | * Redistribution and use in source and binary forms, with or without modification,
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12 | * are permitted provided that the following conditions are met:
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13 | *
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14 | * 1. Redistributions of source code must retain the above copyright notice,
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15 | * this list of conditions and the following disclaimer.
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16 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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17 | * this list of conditions and the following disclaimer in the documentation
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18 | * and/or other materials provided with the distribution.
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19 | * 3. The name of the author may not be used to endorse or promote products
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20 | * derived from this software without specific prior written permission.
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21 | *
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22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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25 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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27 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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30 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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31 | * OF SUCH DAMAGE.
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32 | *
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33 | * This file is part of the lwIP TCP/IP stack.
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34 | *
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35 | * Author: Adam Dunkels <adam@sics.se>
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36 | *
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37 | */
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38 | #ifndef LWIP_HDR_TCPBASE_H
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39 | #define LWIP_HDR_TCPBASE_H
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40 |
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41 | #include "lwip/opt.h"
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42 |
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43 | #if LWIP_TCP /* don't build if not configured for use in lwipopts.h */
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44 |
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45 | #ifdef __cplusplus
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46 | extern "C" {
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47 | #endif
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48 |
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49 |
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50 | #if LWIP_WND_SCALE
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51 | typedef u32_t tcpwnd_size_t;
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52 | #else
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53 | typedef u16_t tcpwnd_size_t;
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54 | #endif
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55 |
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56 | enum tcp_state {
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57 | CLOSED = 0,
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58 | LISTEN = 1,
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59 | SYN_SENT = 2,
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60 | SYN_RCVD = 3,
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61 | ESTABLISHED = 4,
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62 | FIN_WAIT_1 = 5,
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63 | FIN_WAIT_2 = 6,
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64 | CLOSE_WAIT = 7,
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65 | CLOSING = 8,
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66 | LAST_ACK = 9,
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67 | TIME_WAIT = 10
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68 | };
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69 | /* ATTENTION: this depends on state number ordering! */
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70 | #define TCP_STATE_IS_CLOSING(state) ((state) >= FIN_WAIT_1)
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71 |
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72 | /* Flags for "apiflags" parameter in tcp_write */
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73 | #define TCP_WRITE_FLAG_COPY 0x01
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74 | #define TCP_WRITE_FLAG_MORE 0x02
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75 |
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76 | #define TCP_PRIO_MIN 1
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77 | #define TCP_PRIO_NORMAL 64
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78 | #define TCP_PRIO_MAX 127
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79 |
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80 | const char* tcp_debug_state_str(enum tcp_state s);
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81 |
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82 | #ifdef __cplusplus
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83 | }
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84 | #endif
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85 |
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86 | #endif /* LWIP_TCP */
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87 |
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88 | #endif /* LWIP_HDR_TCPBASE_H */
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