BadVPN – Blame information for rev 1
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1 | office | 1 | /** |
2 | * @file SinglePacketBuffer.c |
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3 | * @author Ambroz Bizjak <ambrop7@gmail.com> |
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4 | * |
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5 | * @section LICENSE |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions are met: |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * 2. Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * 3. Neither the name of the author nor the |
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15 | * names of its contributors may be used to endorse or promote products |
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16 | * derived from this software without specific prior written permission. |
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17 | * |
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18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
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19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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20 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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21 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
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22 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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23 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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24 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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25 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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29 | |||
30 | #include <stdlib.h> |
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31 | |||
32 | #include <misc/debug.h> |
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33 | #include <misc/balloc.h> |
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34 | |||
35 | #include <flow/SinglePacketBuffer.h> |
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36 | |||
37 | static void input_handler_done (SinglePacketBuffer *o, int in_len) |
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38 | { |
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39 | DebugObject_Access(&o->d_obj); |
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40 | |||
41 | PacketPassInterface_Sender_Send(o->output, o->buf, in_len); |
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42 | } |
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43 | |||
44 | static void output_handler_done (SinglePacketBuffer *o) |
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45 | { |
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46 | DebugObject_Access(&o->d_obj); |
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47 | |||
48 | PacketRecvInterface_Receiver_Recv(o->input, o->buf); |
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49 | } |
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50 | |||
51 | int SinglePacketBuffer_Init (SinglePacketBuffer *o, PacketRecvInterface *input, PacketPassInterface *output, BPendingGroup *pg) |
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52 | { |
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53 | ASSERT(PacketPassInterface_GetMTU(output) >= PacketRecvInterface_GetMTU(input)) |
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54 | |||
55 | // init arguments |
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56 | o->input = input; |
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57 | o->output = output; |
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58 | |||
59 | // init input |
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60 | PacketRecvInterface_Receiver_Init(o->input, (PacketRecvInterface_handler_done)input_handler_done, o); |
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61 | |||
62 | // init output |
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63 | PacketPassInterface_Sender_Init(o->output, (PacketPassInterface_handler_done)output_handler_done, o); |
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64 | |||
65 | // init buffer |
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66 | if (!(o->buf = (uint8_t *)BAlloc(PacketRecvInterface_GetMTU(o->input)))) { |
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67 | goto fail1; |
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68 | } |
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69 | |||
70 | // schedule receive |
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71 | PacketRecvInterface_Receiver_Recv(o->input, o->buf); |
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72 | |||
73 | DebugObject_Init(&o->d_obj); |
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74 | |||
75 | return 1; |
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76 | |||
77 | fail1: |
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78 | return 0; |
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79 | } |
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80 | |||
81 | void SinglePacketBuffer_Free (SinglePacketBuffer *o) |
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82 | { |
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83 | DebugObject_Free(&o->d_obj); |
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84 | |||
85 | // free buffer |
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86 | BFree(o->buf); |
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87 | } |