NS-3 based Named Data Networking (NDN) simulator
ndnSIM 2.5: NDN, CCN, CCNx, content centric networks
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socket-utils.cpp
Go to the documentation of this file.
1
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2014-2018, Regents of the University of California,
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* Arizona Board of Regents,
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* Colorado State University,
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* University Pierre & Marie Curie, Sorbonne University,
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* Washington University in St. Louis,
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* Beijing Institute of Technology,
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* The University of Memphis.
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*
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* This file is part of NFD (Named Data Networking Forwarding Daemon).
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* See AUTHORS.md for complete list of NFD authors and contributors.
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*
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* NFD is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Foundation,
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* either version 3 of the License, or (at your option) any later version.
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*
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* NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
20
* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* NFD, e.g., in COPYING.md file. If not, see <http://www.gnu.org/licenses/>.
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*/
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26
#include "
socket-utils.hpp
"
27
#include "
transport.hpp
"
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#if defined(__linux__)
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#include <linux/sockios.h>
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#include <sys/ioctl.h>
32
#elif defined(__APPLE__)
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#include <sys/socket.h>
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#endif
35
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namespace
nfd
{
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namespace
face {
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39
ssize_t
40
getTxQueueLength
(
int
fd)
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{
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int
queueLength =
QUEUE_UNSUPPORTED
;
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#if defined(__linux__)
44
if
(ioctl(fd, SIOCOUTQ, &queueLength) < 0) {
45
queueLength =
QUEUE_ERROR
;
46
}
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#elif defined(__APPLE__)
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socklen_t queueLengthSize =
sizeof
(queueLength);
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if
(getsockopt(fd, SOL_SOCKET, SO_NWRITE, &queueLength, &queueLengthSize) < 0) {
50
queueLength =
QUEUE_ERROR
;
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}
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#endif
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return
queueLength;
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}
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}
// namespace face
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}
// namespace nfd
nfd::face::QUEUE_UNSUPPORTED
const ssize_t QUEUE_UNSUPPORTED
indicates that the transport does not support reading the queue capacity/length
Definition:
transport.hpp:104
nfd::face::QUEUE_ERROR
const ssize_t QUEUE_ERROR
indicates that the transport was unable to retrieve the queue capacity/length
Definition:
transport.hpp:108
socket-utils.hpp
nfd
Copyright (c) 2011-2015 Regents of the University of California.
Definition:
ndn-common.hpp:40
nfd::face::getTxQueueLength
ssize_t getTxQueueLength(int fd)
obtain send queue length from a specified system socket
Definition:
socket-utils.cpp:40
transport.hpp
ndnSIM
NFD
daemon
face
socket-utils.cpp
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