61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/*********************************************************************
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PicoTCP. Copyright (c) 2012-2017 Altran Intelligent Systems. Some rights reserved.
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See COPYING, LICENSE.GPLv2 and LICENSE.GPLv3 for usage.
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Authors: Daniele Lacamera
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*********************************************************************/
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#include "pico_device.h"
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#include "pico_dev_null.h"
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#include "pico_stack.h"
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struct pico_device_null {
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struct pico_device dev;
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int statistics_frames_out;
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};
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#define NULL_MTU 0
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static int pico_null_send(struct pico_device *dev, void *buf, int len)
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{
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struct pico_device_null *null = (struct pico_device_null *) dev;
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IGNORE_PARAMETER(buf);
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/* Increase the statistic count */
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null->statistics_frames_out++;
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/* Discard the frame content silently. */
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return len;
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}
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static int pico_null_poll(struct pico_device *dev, int loop_score)
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{
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/* We never have packet to receive, no score is used. */
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IGNORE_PARAMETER(dev);
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return loop_score;
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}
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/* Public interface: create/destroy. */
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struct pico_device *pico_null_create(const char *name)
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{
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struct pico_device_null *null = PICO_ZALLOC(sizeof(struct pico_device_null));
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if (!null)
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return NULL;
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if( 0 != pico_device_init((struct pico_device *)null, name, NULL)) {
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return NULL;
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}
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null->dev.overhead = 0;
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null->statistics_frames_out = 0;
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null->dev.send = pico_null_send;
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null->dev.poll = pico_null_poll;
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dbg("Device %s created.\n", null->dev.name);
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return (struct pico_device *)null;
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}
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