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https://github.com/openvswitch/ovs
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29bb3093eb
This patch enables TSO support for non-DPDK use cases, and also add check-system-tso testsuite. Before TSO, we have to disable checksum offload, allowing the kernel to calculate the TCP/UDP packet checsum. With TSO, we can skip the checksum validation by enabling checksum offload, and with large packet size, we see better performance. Consider container to container use cases: iperf3 -c (ns0) -> veth peer -> OVS -> veth peer -> iperf3 -s (ns1) And I got around 6Gbps, similar to TSO with DPDK-enabled. Acked-by: Flavio Leitner <fbl@sysclose.org> Acked-by: Ilya Maximets <i.maximets@ovn.org> Signed-off-by: William Tu <u9012063@gmail.com>
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/*
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* Copyright (c) 2020 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 "smap.h"
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#include "ovs-thread.h"
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#include "openvswitch/vlog.h"
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#include "dpdk.h"
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#include "userspace-tso.h"
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#include "vswitch-idl.h"
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VLOG_DEFINE_THIS_MODULE(userspace_tso);
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static bool userspace_tso = false;
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void
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userspace_tso_init(const struct smap *ovs_other_config)
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{
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if (smap_get_bool(ovs_other_config, "userspace-tso-enable", 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_INFO("Userspace TCP Segmentation Offloading support enabled");
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userspace_tso = true;
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ovsthread_once_done(&once);
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}
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}
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}
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bool
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userspace_tso_enabled(void)
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{
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return userspace_tso;
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}
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