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/*
* This file is open source software, licensed to you under the terms
* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. You may not use this file except in compliance with the License.
*
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#ifndef CEPH_DPDK_RTE_H_
#define CEPH_DPDK_RTE_H_
#include <condition_variable>
#include <mutex>
#include <thread>
#include <bitset>
#include <rte_config.h>
#include <rte_version.h>
#include <boost/program_options.hpp>
/*********************** Compat section ***************************************/
// We currently support only versions 2.0 and above.
#if (RTE_VERSION < RTE_VERSION_NUM(2,0,0,0))
#error "DPDK version above 2.0.0 is required"
#endif
#if defined(RTE_MBUF_REFCNT_ATOMIC)
#warning "CONFIG_RTE_MBUF_REFCNT_ATOMIC should be disabled in DPDK's " \
"config/common_linuxapp"
#endif
/******************************************************************************/
namespace dpdk {
// DPDK Environment Abstraction Layer
class eal {
public:
using cpuset = std::bitset<RTE_MAX_LCORE>;
static std::mutex lock;
static std::condition_variable cond;
static std::list<std::function<void()>> funcs;
static int init(CephContext *c);
static void execute_on_master(std::function<void()> &&f) {
bool done = false;
std::unique_lock<std::mutex> l(lock);
funcs.emplace_back([&]() { f(); done = true; });
cond.notify_all();
while (!done)
cond.wait(l);
}
/**
* Returns the amount of memory needed for DPDK
* @param num_cpus Number of CPUs the application is going to use
*
* @return
*/
static size_t mem_size(int num_cpus);
static bool initialized;
static std::thread t;
};
} // namespace dpdk
#endif // CEPH_DPDK_RTE_H_
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