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// Copyright 2017 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "Common/QoSSession.h"
#if defined(_WIN32)
#include <Qos2.h>
#pragma comment(lib, "qwave")
#endif
#include "Core/ConfigManager.h"
namespace Common
{
#if defined(_WIN32)
QoSSession::QoSSession(ENetPeer* peer, int tos_val) : m_peer(peer)
{
QOS_VERSION ver = {1, 0};
if (!QOSCreateHandle(&ver, &m_qos_handle))
return;
sockaddr_in sin = {};
sin.sin_family = AF_INET;
sin.sin_port = ENET_HOST_TO_NET_16(peer->host->address.port);
sin.sin_addr.s_addr = peer->host->address.host;
if (QOSAddSocketToFlow(m_qos_handle, peer->host->socket, reinterpret_cast<PSOCKADDR>(&sin),
QOSTrafficTypeControl, QOS_NON_ADAPTIVE_FLOW, &m_qos_flow_id))
{
// We shift the complete ToS value by 3 to get rid of the 3 bit ECN field
DWORD dscp = static_cast<DWORD>(tos_val >> 3);
// Sets DSCP to the same as Linux
// This will fail if we're not admin, but we ignore it
QOSSetFlow(m_qos_handle, m_qos_flow_id, QOSSetOutgoingDSCPValue, sizeof(DWORD), &dscp, 0,
nullptr);
m_success = true;
}
}
QoSSession::~QoSSession()
{
if (m_qos_handle == nullptr)
return;
if (m_qos_flow_id != 0)
QOSRemoveSocketFromFlow(m_qos_handle, m_peer->host->socket, m_qos_flow_id, 0);
QOSCloseHandle(m_qos_handle);
}
#else
QoSSession::QoSSession(ENetPeer* peer, int tos_val)
{
// Apple systems don't support SO_PRIORITY on BSD sockets, but they do support a flag for
// marking sockets as a specific type of traffic. `NET_SERVICE_TYPE_RV` should roughly
// correspond to "low delay tolerant, low-medium loss tolerant, elastic flow, variable
// packet interval, rate and size".
#if defined(__APPLE__)
constexpr int srv_type = NET_SERVICE_TYPE_RV;
setsockopt(peer->host->socket, SOL_SOCKET, SO_NET_SERVICE_TYPE, &srv_type, sizeof(srv_type));
#endif
#if defined(__linux__)
constexpr int priority = 7;
setsockopt(peer->host->socket, SOL_SOCKET, SO_PRIORITY, &priority, sizeof(priority));
#endif
m_success = setsockopt(peer->host->socket, IPPROTO_IP, IP_TOS, &tos_val, sizeof(tos_val)) == 0;
}
QoSSession::~QoSSession() = default;
#endif
QoSSession& QoSSession::operator=(QoSSession&& session)
{
if (this != &session)
{
#if defined(_WIN32)
m_qos_handle = session.m_qos_handle;
m_qos_flow_id = session.m_qos_flow_id;
m_peer = session.m_peer;
session.m_qos_handle = nullptr;
session.m_qos_flow_id = 0;
session.m_peer = nullptr;
#endif
m_success = session.m_success;
session.m_success = false;
}
return *this;
}
} // namespace Common
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