/* * linktestreceiver.{cc,hh} -- receive and print link test packets * Douglas S. J. De Couto * * Copyright (c) 1999-2002 Massachusetts Institute of Technology * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, subject to the conditions * listed in the Click LICENSE file. These conditions include: you must * preserve this copyright notice, and you cannot mention the copyright * holders in advertising related to the Software without their permission. * The Software is provided WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED. This * notice is a summary of the Click LICENSE file; the license in that file is * legally binding. */#include <click/config.h>#include <click/confparse.hh>#include <clicknet/ether.h>#include <click/error.hh>#include "linktestreceiver.hh"#include "linktester.hh"#include "airoinfo.hh"CLICK_DECLSLinkTestReceiver::LinkTestReceiver() : _ai(0){  add_input();  add_output();}LinkTestReceiver::~LinkTestReceiver(){}intLinkTestReceiver::configure(Vector<String> &conf, ErrorHandler *errh){  int res = cp_va_parse(conf, this, errh,			cpOptional,			cpElement, "AiroInfo element", &_ai,			cpEnd);  if (res < 0)    return res;  return 0;}intLinkTestReceiver::initialize(ErrorHandler *){  return 0;}Packet *LinkTestReceiver::simple_action(Packet *p){  click_ether *eh = (click_ether *) p->data();  if (htons(eh->ether_type) != LinkTester::ETHERTYPE)    return p;  EtherAddress src(eh->ether_shost);  EtherAddress dst(eh->ether_dhost);  bool res = false;  int dbm, quality;  if (_ai)     res = _ai->get_signal_info(src, dbm, quality);  if (!_ai || !res)    dbm = quality = -1;  res = false;  int avg_over_sec, avg_over_minute, max_over_minute;  if (_ai)    res = _ai->get_noise(avg_over_sec, avg_over_minute, max_over_minute);  if (!_ai || !res)    avg_over_sec = avg_over_minute = max_over_minute = -1;  LinkTester::payload_t *payload = (LinkTester::payload_t *) (eh + 1);    click_chatter("%{timestamp},%u.%06u,%s,%s,%hu,%d,%u,%u\n",		&p->timestamp_anno(),		ntohl(payload->tx_sec), ntohl(payload->tx_usec),		src.s().cc(), dst.s().cc(), ntohs(payload->size),		payload->before ? 1 : 0, ntohl(payload->iteration), 		ntohl(payload->seq_no));		  return p;}ELEMENT_REQUIRES(userlevel)EXPORT_ELEMENT(LinkTestReceiver)