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https://github.com/openvswitch/ovs
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1276e3db89
Unlike 'rte_get_tsc_cycles()' which doesn't need any specific
initialization, 'rte_get_tsc_hz()' could be used only after successfull
call to 'rte_eal_init()'. 'rte_eal_init()' estimates the TSC frequency
for later use by 'rte_get_tsc_hz()'. Fairly said, we're not allowed
to use 'rte_get_tsc_cycles()' before initializing DPDK too, but it
works this way for now and provides correct results.
This patch provides TSC frequency estimation code that will be used
in two cases:
* DPDK is not compiled in, i.e. DPDK_NETDEV not defined.
* DPDK compiled in but not initialized,
i.e. other_config:dpdk-init=false
This change is mostly useful for AF_XDP netdev support, i.e. allows
to use dpif-netdev/pmd-perf-show command and various PMD perf metrics.
Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
Acked-by: William Tu <u9012063@gmail.com>
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/*
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* Copyright (c) 2016 Nicira, 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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#ifndef DPDK_H
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#define DPDK_H
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#include <stdbool.h>
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#ifdef DPDK_NETDEV
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#include <rte_config.h>
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#include <rte_lcore.h>
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#define NON_PMD_CORE_ID LCORE_ID_ANY
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#else
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#define NON_PMD_CORE_ID UINT32_MAX
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#endif /* DPDK_NETDEV */
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struct smap;
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struct ovsrec_open_vswitch;
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void dpdk_init(const struct smap *ovs_other_config);
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void dpdk_set_lcore_id(unsigned cpu);
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const char *dpdk_get_vhost_sock_dir(void);
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bool dpdk_vhost_iommu_enabled(void);
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bool dpdk_vhost_postcopy_enabled(void);
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bool dpdk_per_port_memory(void);
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bool dpdk_available(void);
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void print_dpdk_version(void);
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void dpdk_status(const struct ovsrec_open_vswitch *);
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#endif /* dpdk.h */
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