67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
#ifdef HAVE_DPDK
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#include "core/dpdk_rte.hh"
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#include "util/conversions.hh"
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#include <experimental/optional>
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#include <rte_pci.h>
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namespace dpdk {
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bool eal::initialized = false;
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void eal::init(cpuset cpus, boost::program_options::variables_map opts)
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{
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if (initialized) {
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return;
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}
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std::stringstream mask;
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mask << std::hex << cpus.to_ulong();
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// TODO: Inherit these from the app parameters - "opts"
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std::vector<std::vector<char>> args {
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string2vector("dpdk_args"),
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string2vector("-c"), string2vector(mask.str()),
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string2vector("-n"), string2vector("1")
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};
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std::experimental::optional<std::string> hugepages_path;
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if (opts.count("hugepages")) {
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hugepages_path = opts["hugepages"].as<std::string>();
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}
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// If "hugepages" is not provided and DPDK PMD drivers mode is requested -
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// use the default DPDK huge tables configuration.
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if (hugepages_path) {
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args.push_back(string2vector("--huge-dir"));
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args.push_back(string2vector(hugepages_path.value()));
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} else if (!opts.count("dpdk-pmd")) {
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args.push_back(string2vector("--no-huge"));
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}
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std::vector<char*> cargs;
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for (auto&& a: args) {
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cargs.push_back(a.data());
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}
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/* initialise the EAL for all */
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int ret = rte_eal_init(cargs.size(), cargs.data());
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if (ret < 0) {
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rte_exit(EXIT_FAILURE, "Cannot init EAL\n");
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}
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// For 1.8 rte_eal_pci_probe() has been moved into the rte_eal_init().
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#ifdef RTE_VERSION_1_7
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/* probe the PCI devices in case we need to use DPDK drivers */
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if (rte_eal_pci_probe() < 0) {
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rte_exit(EXIT_FAILURE, "Cannot probe PCI\n");
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}
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#endif
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initialized = true;
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}
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} // namespace dpdk
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#endif // HAVE_DPDK
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