mirror of https://github.com/LeOS-GSI/LeOS-Genesis
88 lines
2.9 KiB
C
88 lines
2.9 KiB
C
|
/**
|
||
|
|
* @file SinglePacketBuffer.c
|
||
|
|
* @author Ambroz Bizjak <ambrop7@gmail.com>
|
||
|
|
*
|
||
|
|
* @section LICENSE
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. Neither the name of the author nor the
|
||
|
|
* names of its contributors may be used to endorse or promote products
|
||
|
|
* derived from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
#include <misc/debug.h>
|
||
|
|
#include <misc/balloc.h>
|
||
|
|
|
||
|
|
#include <flow/SinglePacketBuffer.h>
|
||
|
|
|
||
|
|
static void input_handler_done (SinglePacketBuffer *o, int in_len)
|
||
|
|
{
|
||
|
|
DebugObject_Access(&o->d_obj);
|
||
|
|
|
||
|
|
PacketPassInterface_Sender_Send(o->output, o->buf, in_len);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void output_handler_done (SinglePacketBuffer *o)
|
||
|
|
{
|
||
|
|
DebugObject_Access(&o->d_obj);
|
||
|
|
|
||
|
|
PacketRecvInterface_Receiver_Recv(o->input, o->buf);
|
||
|
|
}
|
||
|
|
|
||
|
|
int SinglePacketBuffer_Init (SinglePacketBuffer *o, PacketRecvInterface *input, PacketPassInterface *output, BPendingGroup *pg)
|
||
|
|
{
|
||
|
|
ASSERT(PacketPassInterface_GetMTU(output) >= PacketRecvInterface_GetMTU(input))
|
||
|
|
|
||
|
|
// init arguments
|
||
|
|
o->input = input;
|
||
|
|
o->output = output;
|
||
|
|
|
||
|
|
// init input
|
||
|
|
PacketRecvInterface_Receiver_Init(o->input, (PacketRecvInterface_handler_done)input_handler_done, o);
|
||
|
|
|
||
|
|
// init output
|
||
|
|
PacketPassInterface_Sender_Init(o->output, (PacketPassInterface_handler_done)output_handler_done, o);
|
||
|
|
|
||
|
|
// init buffer
|
||
|
|
if (!(o->buf = (uint8_t *)BAlloc(PacketRecvInterface_GetMTU(o->input)))) {
|
||
|
|
goto fail1;
|
||
|
|
}
|
||
|
|
|
||
|
|
// schedule receive
|
||
|
|
PacketRecvInterface_Receiver_Recv(o->input, o->buf);
|
||
|
|
|
||
|
|
DebugObject_Init(&o->d_obj);
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
fail1:
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void SinglePacketBuffer_Free (SinglePacketBuffer *o)
|
||
|
|
{
|
||
|
|
DebugObject_Free(&o->d_obj);
|
||
|
|
|
||
|
|
// free buffer
|
||
|
|
BFree(o->buf);
|
||
|
|
}
|