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Diffstat (limited to 'src/msg/async/dpdk/dpdk_rte.h')
-rw-r--r-- | src/msg/async/dpdk/dpdk_rte.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/msg/async/dpdk/dpdk_rte.h b/src/msg/async/dpdk/dpdk_rte.h new file mode 100644 index 00000000..4aa83899 --- /dev/null +++ b/src/msg/async/dpdk/dpdk_rte.h @@ -0,0 +1,74 @@ +/* + * 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_ |