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/*
* $Id: network_cable.c,v 1.2 2009-06-15 08:41:40 vrsieh Exp $
*
* Copyright (C) 2009 FAUmachine Team <info@faumachine.org>.
* This program is free software. You can redistribute it and/or modify it
* under the terms of the GNU General Public License, either version 2 of
* the License, or (at your option) any later version. See COPYING.
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "random100.h"
#include "sig_integer.h"
#include "network_cable.h"
#define COMP_(x) network_cable_ ## x
struct cpssp {
unsigned int packet_loss;
struct sig_eth *port_end0;
struct sig_eth *port_end1;
};
static void
COMP_(packet_loss_set)(void *_cpssp, int val)
{
struct cpssp *cpssp = (struct cpssp *) _cpssp;
cpssp->packet_loss = val;
}
static void
COMP_(connect)(void *_cpssp, const char *port, void *_sig)
{
static const struct sig_integer_funcs packet_loss_funcs = {
.set = COMP_(packet_loss_set),
};
struct cpssp *cpssp = (struct cpssp *) _cpssp;
struct sig_integer *sig = (struct sig_integer *) _sig;
if (strcmp(port, "packet_loss") == 0) {
sig_integer_connect_in(sig, cpssp, &packet_loss_funcs);
} else {
assert(0); /* FIXME */
}
}
static void
COMP_(disconnect)(void *_cpssp, const char *port)
{
// struct cpssp *cpssp = (struct cpssp *) _cpssp;
/* FIXME */
if (strcmp(port, "packet_loss") == 0) {
// sig_integer_disconnect_in(sig, cpssp);
} else {
assert(0); /* FIXME */
}
}
static void
COMP_(recv0)(void *_cpssp, const void *buf, unsigned int buflen)
{
struct cpssp *cpssp = (struct cpssp *) _cpssp;
if (random100() < cpssp->packet_loss) {
/* Packet lost due to fault injection. */
return;
}
sig_eth_send(cpssp->port_end1, cpssp, buf, buflen);
}
static void
COMP_(recv1)(void *_cpssp, const void *buf, unsigned int buflen)
{
struct cpssp *cpssp = (struct cpssp *) _cpssp;
if (random100() < cpssp->packet_loss) {
/* Packet lost due to fault injection. */
return;
}
sig_eth_send(cpssp->port_end0, cpssp, buf, buflen);
}
void *
COMP_(create)(
const char *name,
struct sig_manage *manage,
struct sig_eth *port_end0,
struct sig_eth *port_end1
)
{
static const struct sig_manage_funcs manage_funcs = {
.connect = COMP_(connect),
.disconnect = COMP_(disconnect),
};
static const struct sig_eth_funcs end0_funcs = {
.recv = COMP_(recv0),
};
static const struct sig_eth_funcs end1_funcs = {
.recv = COMP_(recv1),
};
struct cpssp *cpssp;
cpssp = malloc(sizeof(*cpssp));
assert(cpssp);
cpssp->packet_loss = 0;
/* Call */
sig_manage_connect(manage, cpssp, &manage_funcs);
cpssp->port_end0 = port_end0;
sig_eth_connect(port_end0, cpssp, &end0_funcs);
cpssp->port_end1 = port_end1;
sig_eth_connect(port_end1, cpssp, &end1_funcs);
/* Out */
/* In */
return cpssp;
}
void
COMP_(destroy)(void *_cpssp)
{
struct cpssp *cpssp = _cpssp;
/* FIXME */
free(cpssp);
}
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