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https://github.com/openvswitch/ovs
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b366fa2f49
DPIF AVX512 optimizations currently rely on DPDK availability while they can be used without DPDK. Besides, checking for availability of some isa only has to be done once and won't change while a OVS process runs. Resolve isa availability in constructors by using a simplified query based on cpuid API that comes from the compiler. Note: this also fixes the check on BMI2 availability: DPDK had a bug for this isa, see https://git.dpdk.org/dpdk/commit/?id=aae3037ab1e0. Suggested-by: Ilya Maximets <i.maximets@ovn.org> Signed-off-by: David Marchand <david.marchand@redhat.com> Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
90 lines
1.7 KiB
C
90 lines
1.7 KiB
C
/*
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* Copyright (c) 2014, 2015, 2016 Nicira, Inc.
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* Copyright (c) 2016 Red Hat, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <config.h>
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#include "dpdk.h"
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#include "smap.h"
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#include "ovs-thread.h"
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#include "openvswitch/vlog.h"
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#include "vswitch-idl.h"
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VLOG_DEFINE_THIS_MODULE(dpdk);
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void
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dpdk_init(const struct smap *ovs_other_config)
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{
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if (smap_get_bool(ovs_other_config, "dpdk-init", false)) {
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static struct ovsthread_once once = OVSTHREAD_ONCE_INITIALIZER;
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if (ovsthread_once_start(&once)) {
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VLOG_ERR("DPDK not supported in this copy of Open vSwitch.");
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ovsthread_once_done(&once);
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}
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}
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}
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void
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dpdk_set_lcore_id(unsigned cpu OVS_UNUSED)
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{
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/* Nothing */
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}
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const char *
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dpdk_get_vhost_sock_dir(void)
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{
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return NULL;
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}
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bool
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dpdk_vhost_iommu_enabled(void)
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{
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return false;
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}
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bool
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dpdk_vhost_postcopy_enabled(void)
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{
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return false;
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}
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bool
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dpdk_per_port_memory(void)
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{
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return false;
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}
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bool
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dpdk_available(void)
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{
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return false;
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}
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void
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print_dpdk_version(void)
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{
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}
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void
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dpdk_status(const struct ovsrec_open_vswitch *cfg)
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{
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if (cfg) {
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ovsrec_open_vswitch_set_dpdk_initialized(cfg, false);
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ovsrec_open_vswitch_set_dpdk_version(cfg, "none");
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}
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}
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