1 | /*
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2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without modification,
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6 | * are permitted provided that the following conditions are met:
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7 | *
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8 | * 1. Redistributions of source code must retain the above copyright notice,
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9 | * this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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11 | * this list of conditions and the following disclaimer in the documentation
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12 | * and/or other materials provided with the distribution.
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13 | * 3. The name of the author may not be used to endorse or promote products
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14 | * derived from this software without specific prior written permission.
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15 | *
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16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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25 | * OF SUCH DAMAGE.
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26 | *
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27 | * This file is part of the lwIP TCP/IP stack.
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28 | *
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29 | * Author: Adam Dunkels <adam@sics.se>
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30 | *
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31 | */
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32 | #ifndef __LWIP_RAW_H__
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33 | #define __LWIP_RAW_H__
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34 |
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35 | #include "lwip/opt.h"
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36 |
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37 | #if LWIP_RAW /* don't build if not configured for use in lwipopts.h */
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38 |
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39 | #include "lwip/pbuf.h"
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40 | #include "lwip/def.h"
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41 | #include "lwip/ip.h"
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42 | #include "lwip/ip_addr.h"
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43 |
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44 | #ifdef __cplusplus
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45 | extern "C" {
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46 | #endif
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47 |
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48 | struct raw_pcb;
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49 |
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50 | /** Function prototype for raw pcb receive callback functions.
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51 | * @param arg user supplied argument (raw_pcb.recv_arg)
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52 | * @param pcb the raw_pcb which received data
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53 | * @param p the packet buffer that was received
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54 | * @param addr the remote IP address from which the packet was received
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55 | * @return 1 if the packet was 'eaten' (aka. deleted),
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56 | * 0 if the packet lives on
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57 | * If returning 1, the callback is responsible for freeing the pbuf
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58 | * if it's not used any more.
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59 | */
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60 | typedef u8_t (*raw_recv_fn)(void *arg, struct raw_pcb *pcb, struct pbuf *p,
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61 | ip_addr_t *addr);
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62 |
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63 | struct raw_pcb {
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64 | /* Common members of all PCB types */
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65 | IP_PCB;
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66 |
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67 | struct raw_pcb *next;
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68 |
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69 | u8_t protocol;
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70 |
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71 | /** receive callback function */
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72 | raw_recv_fn recv;
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73 | /* user-supplied argument for the recv callback */
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74 | void *recv_arg;
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75 | };
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76 |
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77 | /* The following functions is the application layer interface to the
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78 | RAW code. */
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79 | struct raw_pcb * raw_new (u8_t proto);
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80 | void raw_remove (struct raw_pcb *pcb);
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81 | err_t raw_bind (struct raw_pcb *pcb, ip_addr_t *ipaddr);
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82 | err_t raw_connect (struct raw_pcb *pcb, ip_addr_t *ipaddr);
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83 |
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84 | void raw_recv (struct raw_pcb *pcb, raw_recv_fn recv, void *recv_arg);
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85 | err_t raw_sendto (struct raw_pcb *pcb, struct pbuf *p, ip_addr_t *ipaddr);
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86 | err_t raw_send (struct raw_pcb *pcb, struct pbuf *p);
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87 |
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88 | /* The following functions are the lower layer interface to RAW. */
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89 | u8_t raw_input (struct pbuf *p, struct netif *inp);
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90 | #define raw_init() /* Compatibility define, not init needed. */
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91 |
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92 | #ifdef __cplusplus
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93 | }
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94 | #endif
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95 |
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96 | #endif /* LWIP_RAW */
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97 |
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98 | #endif /* __LWIP_RAW_H__ */
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