728 lines
19 KiB
Go
728 lines
19 KiB
Go
// Copyright 2018 CNI authors
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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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package main
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import (
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"encoding/json"
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"fmt"
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"net"
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"time"
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"github.com/vishvananda/netlink"
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"github.com/containernetworking/cni/pkg/invoke"
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"github.com/containernetworking/cni/pkg/skel"
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"github.com/containernetworking/cni/pkg/types"
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"github.com/containernetworking/cni/pkg/types/current"
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"github.com/containernetworking/plugins/pkg/ns"
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"github.com/containernetworking/plugins/pkg/testutils"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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"github.com/onsi/gomega/gexec"
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)
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var _ = Describe("bandwidth test", func() {
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var (
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hostNs ns.NetNS
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containerNs ns.NetNS
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ifbDeviceName string
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hostIfname string
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containerIfname string
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hostIP net.IP
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containerIP net.IP
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hostIfaceMTU int
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)
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BeforeEach(func() {
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var err error
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hostIfname = "host-veth"
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containerIfname = "container-veth"
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hostNs, err = testutils.NewNS()
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Expect(err).NotTo(HaveOccurred())
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containerNs, err = testutils.NewNS()
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Expect(err).NotTo(HaveOccurred())
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hostIP = net.IP{169, 254, 0, 1}
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containerIP = net.IP{10, 254, 0, 1}
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hostIfaceMTU = 1024
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ifbDeviceName = "5b6c"
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createVeth(hostNs.Path(), hostIfname, containerNs.Path(), containerIfname, hostIP, containerIP, hostIfaceMTU)
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})
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AfterEach(func() {
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containerNs.Close()
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hostNs.Close()
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})
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Describe("cmdADD", func() {
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It("Works with a Veth pair using 0.3.0 config", func() {
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conf := `{
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"cniVersion": "0.3.0",
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"name": "cni-plugin-bandwidth-test",
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"type": "bandwidth",
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"ingressRate": 8,
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"ingressBurst": 8,
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"egressRate": 16,
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"egressBurst": 9,
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"prevResult": {
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"interfaces": [
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{
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"name": "%s",
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"sandbox": ""
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},
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{
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"name": "%s",
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"sandbox": "%s"
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}
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],
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"ips": [
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{
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"version": "4",
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"address": "%s/24",
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"gateway": "10.0.0.1",
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"interface": 1
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}
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],
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"routes": []
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}
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}`
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conf = fmt.Sprintf(conf, hostIfname, containerIfname, containerNs.Path(), containerIP.String())
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: containerNs.Path(),
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IfName: containerIfname,
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StdinData: []byte(conf),
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}
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Expect(hostNs.Do(func(netNS ns.NetNS) error {
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defer GinkgoRecover()
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r, out, err := testutils.CmdAdd(containerNs.Path(), args.ContainerID, "", []byte(conf), func() error { return cmdAdd(args) })
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Expect(err).NotTo(HaveOccurred(), string(out))
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result, err := current.GetResult(r)
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Expect(err).NotTo(HaveOccurred())
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Expect(result.Interfaces).To(HaveLen(3))
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Expect(result.Interfaces[2].Name).To(Equal(ifbDeviceName))
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Expect(result.Interfaces[2].Sandbox).To(Equal(""))
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ifbLink, err := netlink.LinkByName(ifbDeviceName)
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Expect(err).NotTo(HaveOccurred())
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Expect(ifbLink.Attrs().MTU).To(Equal(hostIfaceMTU))
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qdiscs, err := netlink.QdiscList(ifbLink)
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Expect(err).NotTo(HaveOccurred())
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Expect(qdiscs).To(HaveLen(1))
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Expect(qdiscs[0].Attrs().LinkIndex).To(Equal(ifbLink.Attrs().Index))
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Expect(qdiscs[0]).To(BeAssignableToTypeOf(&netlink.Tbf{}))
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Expect(qdiscs[0].(*netlink.Tbf).Rate).To(Equal(uint64(2)))
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Expect(qdiscs[0].(*netlink.Tbf).Limit).To(Equal(uint32(9)))
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hostVethLink, err := netlink.LinkByName(hostIfname)
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Expect(err).NotTo(HaveOccurred())
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qdiscFilters, err := netlink.FilterList(hostVethLink, netlink.MakeHandle(0xffff, 0))
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Expect(err).NotTo(HaveOccurred())
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Expect(qdiscFilters).To(HaveLen(1))
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Expect(qdiscFilters[0].(*netlink.U32).Actions[0].(*netlink.MirredAction).Ifindex).To(Equal(ifbLink.Attrs().Index))
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return nil
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})).To(Succeed())
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Expect(hostNs.Do(func(n ns.NetNS) error {
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defer GinkgoRecover()
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ifbLink, err := netlink.LinkByName(hostIfname)
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Expect(err).NotTo(HaveOccurred())
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qdiscs, err := netlink.QdiscList(ifbLink)
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Expect(err).NotTo(HaveOccurred())
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Expect(qdiscs).To(HaveLen(2))
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Expect(qdiscs[0].Attrs().LinkIndex).To(Equal(ifbLink.Attrs().Index))
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Expect(qdiscs[0]).To(BeAssignableToTypeOf(&netlink.Tbf{}))
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Expect(qdiscs[0].(*netlink.Tbf).Rate).To(Equal(uint64(1)))
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Expect(qdiscs[0].(*netlink.Tbf).Limit).To(Equal(uint32(8)))
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return nil
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})).To(Succeed())
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})
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It("Does not apply ingress when disabled", func() {
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conf := `{
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"cniVersion": "0.3.0",
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"name": "cni-plugin-bandwidth-test",
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"type": "bandwidth",
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"ingressRate": 0,
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"ingressBurst": 0,
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"egressRate": 8,
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"egressBurst": 1,
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"prevResult": {
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"interfaces": [
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{
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"name": "%s",
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"sandbox": ""
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},
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{
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"name": "%s",
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"sandbox": "%s"
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}
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],
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"ips": [
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{
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"version": "4",
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"address": "%s/24",
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"gateway": "10.0.0.1",
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"interface": 1
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}
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],
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"routes": []
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}
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}`
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conf = fmt.Sprintf(conf, hostIfname, containerIfname, containerNs.Path(), containerIP.String())
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: containerNs.Path(),
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IfName: containerIfname,
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StdinData: []byte(conf),
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}
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Expect(hostNs.Do(func(netNS ns.NetNS) error {
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defer GinkgoRecover()
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_, out, err := testutils.CmdAdd(containerNs.Path(), args.ContainerID, ifbDeviceName, []byte(conf), func() error { return cmdAdd(args) })
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Expect(err).NotTo(HaveOccurred(), string(out))
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_, err = netlink.LinkByName(ifbDeviceName)
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Expect(err).NotTo(HaveOccurred())
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return nil
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})).To(Succeed())
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Expect(hostNs.Do(func(n ns.NetNS) error {
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defer GinkgoRecover()
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containerIfLink, err := netlink.LinkByName(hostIfname)
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Expect(err).NotTo(HaveOccurred())
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qdiscs, err := netlink.QdiscList(containerIfLink)
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Expect(err).NotTo(HaveOccurred())
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Expect(qdiscs).To(HaveLen(2))
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Expect(qdiscs[0]).NotTo(BeAssignableToTypeOf(&netlink.Tbf{}))
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Expect(qdiscs[1]).NotTo(BeAssignableToTypeOf(&netlink.Tbf{}))
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return nil
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})).To(Succeed())
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})
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It("Does not apply egress when disabled", func() {
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conf := `{
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"cniVersion": "0.3.0",
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"name": "cni-plugin-bandwidth-test",
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"type": "bandwidth",
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"egressRate": 0,
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"egressBurst": 0,
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"ingressRate": 8,
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"ingressBurst": 1,
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"prevResult": {
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"interfaces": [
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{
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"name": "%s",
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"sandbox": ""
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},
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{
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"name": "%s",
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"sandbox": "%s"
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}
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],
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"ips": [
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{
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"version": "4",
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"address": "%s/24",
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"gateway": "10.0.0.1",
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"interface": 1
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}
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],
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"routes": []
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}
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}`
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conf = fmt.Sprintf(conf, hostIfname, containerIfname, containerNs.Path(), containerIP.String())
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: containerNs.Path(),
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IfName: containerIfname,
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StdinData: []byte(conf),
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}
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Expect(hostNs.Do(func(netNS ns.NetNS) error {
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defer GinkgoRecover()
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_, out, err := testutils.CmdAdd(containerNs.Path(), args.ContainerID, ifbDeviceName, []byte(conf), func() error { return cmdAdd(args) })
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Expect(err).NotTo(HaveOccurred(), string(out))
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_, err = netlink.LinkByName(ifbDeviceName)
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Expect(err).To(HaveOccurred())
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return nil
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})).To(Succeed())
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Expect(hostNs.Do(func(n ns.NetNS) error {
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defer GinkgoRecover()
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containerIfLink, err := netlink.LinkByName(hostIfname)
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Expect(err).NotTo(HaveOccurred())
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qdiscs, err := netlink.QdiscList(containerIfLink)
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Expect(err).NotTo(HaveOccurred())
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Expect(qdiscs).To(HaveLen(1))
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Expect(qdiscs[0].Attrs().LinkIndex).To(Equal(containerIfLink.Attrs().Index))
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Expect(qdiscs[0]).To(BeAssignableToTypeOf(&netlink.Tbf{}))
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Expect(qdiscs[0].(*netlink.Tbf).Rate).To(Equal(uint64(1)))
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Expect(qdiscs[0].(*netlink.Tbf).Limit).To(Equal(uint32(1)))
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return nil
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})).To(Succeed())
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})
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It("fails an invalid ingress config", func() {
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conf := `{
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"cniVersion": "0.3.0",
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"name": "cni-plugin-bandwidth-test",
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"type": "bandwidth",
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"ingressRate": 0,
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"ingressBurst": 123,
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"egressRate": 123,
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"egressBurst": 123,
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"prevResult": {
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"interfaces": [
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{
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"name": "%s",
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"sandbox": ""
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},
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{
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"name": "%s",
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"sandbox": "%s"
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}
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],
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"ips": [
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{
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"version": "4",
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"address": "%s/24",
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"gateway": "10.0.0.1",
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"interface": 1
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}
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],
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"routes": []
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}
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}`
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conf = fmt.Sprintf(conf, hostIfname, containerIfname, containerNs.Path(), containerIP.String())
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: containerNs.Path(),
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IfName: "eth0",
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StdinData: []byte(conf),
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}
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Expect(hostNs.Do(func(netNS ns.NetNS) error {
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defer GinkgoRecover()
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_, _, err := testutils.CmdAdd(containerNs.Path(), args.ContainerID, "", []byte(conf), func() error { return cmdAdd(args) })
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Expect(err).To(MatchError("if burst is set, rate must also be set"))
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return nil
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})).To(Succeed())
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})
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It("Works with a Veth pair using runtime config", func() {
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conf := `{
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"cniVersion": "0.3.0",
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"name": "cni-plugin-bandwidth-test",
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"type": "bandwidth",
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"runtimeConfig": {
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"bandWidth": {
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"ingressRate": 8,
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"ingressBurst": 8,
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"egressRate": 16,
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"egressBurst": 9
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}
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},
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"prevResult": {
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"interfaces": [
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{
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"name": "%s",
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"sandbox": ""
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},
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{
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"name": "%s",
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"sandbox": "%s"
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}
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],
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"ips": [
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{
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"version": "4",
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"address": "%s/24",
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"gateway": "10.0.0.1",
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"interface": 1
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}
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],
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"routes": []
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}
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}`
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conf = fmt.Sprintf(conf, hostIfname, containerIfname, containerNs.Path(), containerIP.String())
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: containerNs.Path(),
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IfName: containerIfname,
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StdinData: []byte(conf),
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}
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Expect(hostNs.Do(func(netNS ns.NetNS) error {
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defer GinkgoRecover()
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r, out, err := testutils.CmdAdd(containerNs.Path(), args.ContainerID, "", []byte(conf), func() error { return cmdAdd(args) })
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Expect(err).NotTo(HaveOccurred(), string(out))
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result, err := current.GetResult(r)
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Expect(err).NotTo(HaveOccurred())
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Expect(result.Interfaces).To(HaveLen(3))
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Expect(result.Interfaces[2].Name).To(Equal(ifbDeviceName))
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Expect(result.Interfaces[2].Sandbox).To(Equal(""))
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ifbLink, err := netlink.LinkByName(ifbDeviceName)
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Expect(err).NotTo(HaveOccurred())
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Expect(ifbLink.Attrs().MTU).To(Equal(hostIfaceMTU))
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qdiscs, err := netlink.QdiscList(ifbLink)
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Expect(err).NotTo(HaveOccurred())
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Expect(qdiscs).To(HaveLen(1))
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Expect(qdiscs[0].Attrs().LinkIndex).To(Equal(ifbLink.Attrs().Index))
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Expect(qdiscs[0]).To(BeAssignableToTypeOf(&netlink.Tbf{}))
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Expect(qdiscs[0].(*netlink.Tbf).Rate).To(Equal(uint64(2)))
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Expect(qdiscs[0].(*netlink.Tbf).Limit).To(Equal(uint32(9)))
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hostVethLink, err := netlink.LinkByName(hostIfname)
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Expect(err).NotTo(HaveOccurred())
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qdiscFilters, err := netlink.FilterList(hostVethLink, netlink.MakeHandle(0xffff, 0))
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Expect(err).NotTo(HaveOccurred())
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Expect(qdiscFilters).To(HaveLen(1))
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Expect(qdiscFilters[0].(*netlink.U32).Actions[0].(*netlink.MirredAction).Ifindex).To(Equal(ifbLink.Attrs().Index))
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return nil
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})).To(Succeed())
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Expect(hostNs.Do(func(n ns.NetNS) error {
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defer GinkgoRecover()
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ifbLink, err := netlink.LinkByName(hostIfname)
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Expect(err).NotTo(HaveOccurred())
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qdiscs, err := netlink.QdiscList(ifbLink)
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Expect(err).NotTo(HaveOccurred())
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Expect(qdiscs).To(HaveLen(2))
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Expect(qdiscs[0].Attrs().LinkIndex).To(Equal(ifbLink.Attrs().Index))
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Expect(qdiscs[0]).To(BeAssignableToTypeOf(&netlink.Tbf{}))
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Expect(qdiscs[0].(*netlink.Tbf).Rate).To(Equal(uint64(1)))
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Expect(qdiscs[0].(*netlink.Tbf).Limit).To(Equal(uint32(8)))
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return nil
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})).To(Succeed())
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})
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It("Should apply static config when both static config and runtime config exist", func() {
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conf := `{
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"cniVersion": "0.3.0",
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"name": "cni-plugin-bandwidth-test",
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"type": "bandwidth",
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"ingressRate": 0,
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"ingressBurst": 123,
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"egressRate": 123,
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"egressBurst": 123,
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"runtimeConfig": {
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"bandWidth": {
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"ingressRate": 8,
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"ingressBurst": 8,
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"egressRate": 16,
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"egressBurst": 9
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}
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},
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"prevResult": {
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"interfaces": [
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{
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"name": "%s",
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"sandbox": ""
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},
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{
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"name": "%s",
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"sandbox": "%s"
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}
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],
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"ips": [
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{
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"version": "4",
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"address": "%s/24",
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"gateway": "10.0.0.1",
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"interface": 1
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}
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],
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"routes": []
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}
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}`
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conf = fmt.Sprintf(conf, hostIfname, containerIfname, containerNs.Path(), containerIP.String())
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: containerNs.Path(),
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IfName: "eth0",
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StdinData: []byte(conf),
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}
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Expect(hostNs.Do(func(netNS ns.NetNS) error {
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defer GinkgoRecover()
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_, _, err := testutils.CmdAdd(containerNs.Path(), args.ContainerID, "", []byte(conf), func() error { return cmdAdd(args) })
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Expect(err).To(MatchError("if burst is set, rate must also be set"))
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return nil
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})).To(Succeed())
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})
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})
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|
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Describe("cmdDEL", func() {
|
|
It("Works with a Veth pair using 0.3.0 config", func() {
|
|
conf := `{
|
|
"cniVersion": "0.3.0",
|
|
"name": "cni-plugin-bandwidth-test",
|
|
"type": "bandwidth",
|
|
"ingressRate": 8,
|
|
"ingressBurst": 8,
|
|
"egressRate": 9,
|
|
"egressBurst": 9,
|
|
"prevResult": {
|
|
"interfaces": [
|
|
{
|
|
"name": "%s",
|
|
"sandbox": ""
|
|
},
|
|
{
|
|
"name": "%s",
|
|
"sandbox": "%s"
|
|
}
|
|
],
|
|
"ips": [
|
|
{
|
|
"version": "4",
|
|
"address": "%s/24",
|
|
"gateway": "10.0.0.1",
|
|
"interface": 1
|
|
}
|
|
],
|
|
"routes": []
|
|
}
|
|
}`
|
|
|
|
conf = fmt.Sprintf(conf, hostIfname, containerIfname, containerNs.Path(), containerIP.String())
|
|
args := &skel.CmdArgs{
|
|
ContainerID: "dummy",
|
|
Netns: containerNs.Path(),
|
|
IfName: containerIfname,
|
|
StdinData: []byte(conf),
|
|
}
|
|
|
|
Expect(hostNs.Do(func(netNS ns.NetNS) error {
|
|
defer GinkgoRecover()
|
|
_, out, err := testutils.CmdAdd(containerNs.Path(), args.ContainerID, "", []byte(conf), func() error { return cmdAdd(args) })
|
|
Expect(err).NotTo(HaveOccurred(), string(out))
|
|
|
|
err = testutils.CmdDel(containerNs.Path(), args.ContainerID, "", func() error { return cmdDel(args) })
|
|
Expect(err).NotTo(HaveOccurred(), string(out))
|
|
|
|
_, err = netlink.LinkByName(ifbDeviceName)
|
|
Expect(err).To(HaveOccurred())
|
|
|
|
return nil
|
|
})).To(Succeed())
|
|
|
|
})
|
|
})
|
|
|
|
Context("when chaining bandwidth plugin with PTP using 0.3.0 config", func() {
|
|
var ptpConf string
|
|
var rateInBits int
|
|
var burstInBits int
|
|
var packetInBytes int
|
|
var containerWithoutTbfNS ns.NetNS
|
|
var containerWithTbfNS ns.NetNS
|
|
var portServerWithTbf int
|
|
var portServerWithoutTbf int
|
|
|
|
var containerWithTbfRes types.Result
|
|
var containerWithoutTbfRes types.Result
|
|
var echoServerWithTbf *gexec.Session
|
|
var echoServerWithoutTbf *gexec.Session
|
|
|
|
BeforeEach(func() {
|
|
rateInBytes := 1000
|
|
rateInBits = rateInBytes * 8
|
|
burstInBits = rateInBits * 2
|
|
packetInBytes = rateInBytes * 25
|
|
|
|
ptpConf = `{
|
|
"cniVersion": "0.3.0",
|
|
"name": "mynet",
|
|
"type": "ptp",
|
|
"ipMasq": true,
|
|
"mtu": 512,
|
|
"ipam": {
|
|
"type": "host-local",
|
|
"subnet": "10.1.2.0/24"
|
|
}
|
|
}`
|
|
|
|
containerWithTbfIFName := "ptp0"
|
|
containerWithoutTbfIFName := "ptp1"
|
|
|
|
var err error
|
|
containerWithTbfNS, err = testutils.NewNS()
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
containerWithoutTbfNS, err = testutils.NewNS()
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
By("create two containers, and use the bandwidth plugin on one of them")
|
|
Expect(hostNs.Do(func(ns.NetNS) error {
|
|
defer GinkgoRecover()
|
|
|
|
containerWithTbfRes, _, err = testutils.CmdAdd(containerWithTbfNS.Path(), "dummy", containerWithTbfIFName, []byte(ptpConf), func() error {
|
|
r, err := invoke.DelegateAdd("ptp", []byte(ptpConf), nil)
|
|
Expect(r.Print()).To(Succeed())
|
|
|
|
return err
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
containerWithoutTbfRes, _, err = testutils.CmdAdd(containerWithoutTbfNS.Path(), "dummy2", containerWithoutTbfIFName, []byte(ptpConf), func() error {
|
|
r, err := invoke.DelegateAdd("ptp", []byte(ptpConf), nil)
|
|
Expect(r.Print()).To(Succeed())
|
|
|
|
return err
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
containerWithTbfResult, err := current.GetResult(containerWithTbfRes)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
tbfPluginConf := PluginConf{}
|
|
tbfPluginConf.RuntimeConfig.Bandwidth = &BandwidthEntry{
|
|
IngressBurst: burstInBits,
|
|
IngressRate: rateInBits,
|
|
EgressBurst: burstInBits,
|
|
EgressRate: rateInBits,
|
|
}
|
|
tbfPluginConf.Name = "mynet"
|
|
tbfPluginConf.CNIVersion = "0.3.0"
|
|
tbfPluginConf.Type = "bandwidth"
|
|
tbfPluginConf.RawPrevResult = &map[string]interface{}{
|
|
"ips": containerWithTbfResult.IPs,
|
|
"interfaces": containerWithTbfResult.Interfaces,
|
|
}
|
|
|
|
tbfPluginConf.PrevResult = ¤t.Result{
|
|
IPs: containerWithTbfResult.IPs,
|
|
Interfaces: containerWithTbfResult.Interfaces,
|
|
}
|
|
|
|
conf, err := json.Marshal(tbfPluginConf)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
args := &skel.CmdArgs{
|
|
ContainerID: "dummy3",
|
|
Netns: containerWithTbfNS.Path(),
|
|
IfName: containerWithTbfIFName,
|
|
StdinData: []byte(conf),
|
|
}
|
|
|
|
_, out, err := testutils.CmdAdd(containerWithTbfNS.Path(), args.ContainerID, "", []byte(conf), func() error { return cmdAdd(args) })
|
|
Expect(err).NotTo(HaveOccurred(), string(out))
|
|
|
|
return nil
|
|
})).To(Succeed())
|
|
|
|
By("starting a tcp server on both containers")
|
|
portServerWithTbf, echoServerWithTbf, err = startEchoServerInNamespace(containerWithTbfNS)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
portServerWithoutTbf, echoServerWithoutTbf, err = startEchoServerInNamespace(containerWithoutTbfNS)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
})
|
|
|
|
AfterEach(func() {
|
|
containerWithTbfNS.Close()
|
|
containerWithoutTbfNS.Close()
|
|
if echoServerWithoutTbf != nil {
|
|
echoServerWithoutTbf.Kill()
|
|
}
|
|
if echoServerWithTbf != nil {
|
|
echoServerWithTbf.Kill()
|
|
}
|
|
})
|
|
|
|
Measure("limits ingress traffic on veth device", func(b Benchmarker) {
|
|
var runtimeWithLimit time.Duration
|
|
var runtimeWithoutLimit time.Duration
|
|
|
|
By("gather timing statistics about both containers")
|
|
By("sending tcp traffic to the container that has traffic shaped", func() {
|
|
runtimeWithLimit = b.Time("with tbf", func() {
|
|
result, err := current.GetResult(containerWithTbfRes)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
makeTcpClientInNS(hostNs.Path(), result.IPs[0].Address.IP.String(), portServerWithTbf, packetInBytes)
|
|
})
|
|
})
|
|
|
|
By("sending tcp traffic to the container that does not have traffic shaped", func() {
|
|
runtimeWithoutLimit = b.Time("without tbf", func() {
|
|
result, err := current.GetResult(containerWithoutTbfRes)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
makeTcpClientInNS(hostNs.Path(), result.IPs[0].Address.IP.String(), portServerWithoutTbf, packetInBytes)
|
|
})
|
|
})
|
|
|
|
Expect(runtimeWithLimit).To(BeNumerically(">", runtimeWithoutLimit+1000*time.Millisecond))
|
|
}, 1)
|
|
})
|
|
|
|
})
|