660685a8af
This change introduces new capability flag to change MAC address and to specify IP addresses by tuning and static.
749 lines
18 KiB
Go
749 lines
18 KiB
Go
// Copyright 2017 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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"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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"net"
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"github.com/vishvananda/netlink"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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func buildOneConfig(name, cniVersion string, orig *TuningConf, prevResult types.Result) (*TuningConf, []byte, error) {
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var err error
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inject := map[string]interface{}{
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"name": name,
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"cniVersion": cniVersion,
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}
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// Add previous plugin result
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if prevResult != nil {
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inject["prevResult"] = prevResult
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}
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// Ensure every config uses the same name and version
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config := make(map[string]interface{})
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confBytes, err := json.Marshal(orig)
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if err != nil {
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return nil, nil, err
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}
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err = json.Unmarshal(confBytes, &config)
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if err != nil {
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return nil, nil, fmt.Errorf("unmarshal existing network bytes: %s", err)
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}
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for key, value := range inject {
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config[key] = value
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}
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newBytes, err := json.Marshal(config)
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if err != nil {
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return nil, nil, err
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}
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conf := &TuningConf{}
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if err := json.Unmarshal(newBytes, &conf); err != nil {
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return nil, nil, fmt.Errorf("error parsing configuration: %s", err)
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}
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return conf, newBytes, nil
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}
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var _ = Describe("tuning plugin", func() {
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var originalNS ns.NetNS
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const IFNAME string = "dummy0"
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BeforeEach(func() {
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// Create a new NetNS so we don't modify the host
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var err error
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originalNS, err = testutils.NewNS()
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Expect(err).NotTo(HaveOccurred())
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err = originalNS.Do(func(ns.NetNS) error {
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defer GinkgoRecover()
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err = netlink.LinkAdd(&netlink.Dummy{
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LinkAttrs: netlink.LinkAttrs{
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Name: IFNAME,
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},
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})
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Expect(err).NotTo(HaveOccurred())
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_, err = netlink.LinkByName(IFNAME)
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Expect(err).NotTo(HaveOccurred())
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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})
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AfterEach(func() {
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Expect(originalNS.Close()).To(Succeed())
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})
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It("passes prevResult through unchanged", func() {
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conf := []byte(`{
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"name": "test",
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"type": "tuning",
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"cniVersion": "0.3.1",
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"sysctl": {
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"net.ipv4.conf.all.log_martians": "1"
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},
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"prevResult": {
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"interfaces": [
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{"name": "dummy0", "sandbox":"netns"}
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],
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"ips": [
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{
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"version": "4",
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"address": "10.0.0.2/24",
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"gateway": "10.0.0.1",
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"interface": 0
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}
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]
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}
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}`)
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targetNs, err := testutils.NewNS()
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Expect(err).NotTo(HaveOccurred())
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defer targetNs.Close()
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: targetNs.Path(),
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IfName: IFNAME,
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StdinData: conf,
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}
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err = originalNS.Do(func(ns.NetNS) error {
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defer GinkgoRecover()
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r, _, err := testutils.CmdAddWithArgs(args, func() error {
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return cmdAdd(args)
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})
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Expect(err).NotTo(HaveOccurred())
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result, err := current.GetResult(r)
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Expect(err).NotTo(HaveOccurred())
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Expect(len(result.Interfaces)).To(Equal(1))
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Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
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Expect(len(result.IPs)).To(Equal(1))
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Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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})
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It("configures and deconfigures promiscuous mode with ADD/DEL", func() {
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conf := []byte(`{
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"name": "test",
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"type": "iplink",
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"cniVersion": "0.3.1",
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"promisc": true,
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"prevResult": {
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"interfaces": [
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{"name": "dummy0", "sandbox":"netns"}
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],
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"ips": [
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{
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"version": "4",
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"address": "10.0.0.2/24",
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"gateway": "10.0.0.1",
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"interface": 0
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}
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]
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}
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}`)
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: originalNS.Path(),
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IfName: IFNAME,
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StdinData: conf,
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}
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err := originalNS.Do(func(ns.NetNS) error {
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defer GinkgoRecover()
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r, _, err := testutils.CmdAddWithArgs(args, func() error {
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return cmdAdd(args)
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})
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Expect(err).NotTo(HaveOccurred())
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result, err := current.GetResult(r)
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Expect(err).NotTo(HaveOccurred())
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Expect(len(result.Interfaces)).To(Equal(1))
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Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
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Expect(len(result.IPs)).To(Equal(1))
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Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
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link, err := netlink.LinkByName(IFNAME)
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Expect(err).NotTo(HaveOccurred())
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Expect(link.Attrs().Promisc).To(Equal(1))
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err = testutils.CmdDel(originalNS.Path(),
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args.ContainerID, "", func() error { return cmdDel(args) })
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Expect(err).NotTo(HaveOccurred())
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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})
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It("configures and deconfigures mtu with ADD/DEL", func() {
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conf := []byte(`{
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"name": "test",
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"type": "iplink",
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"cniVersion": "0.3.1",
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"mtu": 1454,
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"prevResult": {
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"interfaces": [
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{"name": "dummy0", "sandbox":"netns"}
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],
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"ips": [
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{
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"version": "4",
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"address": "10.0.0.2/24",
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"gateway": "10.0.0.1",
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"interface": 0
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}
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]
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}
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}`)
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: originalNS.Path(),
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IfName: IFNAME,
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StdinData: conf,
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}
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err := originalNS.Do(func(ns.NetNS) error {
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defer GinkgoRecover()
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r, _, err := testutils.CmdAddWithArgs(args, func() error {
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return cmdAdd(args)
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})
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Expect(err).NotTo(HaveOccurred())
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result, err := current.GetResult(r)
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Expect(err).NotTo(HaveOccurred())
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Expect(len(result.Interfaces)).To(Equal(1))
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Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
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Expect(len(result.IPs)).To(Equal(1))
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Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
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link, err := netlink.LinkByName(IFNAME)
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Expect(err).NotTo(HaveOccurred())
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Expect(link.Attrs().MTU).To(Equal(1454))
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err = testutils.CmdDel(originalNS.Path(),
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args.ContainerID, "", func() error { return cmdDel(args) })
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Expect(err).NotTo(HaveOccurred())
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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})
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It("configures and deconfigures mac address (from conf file) with ADD/DEL", func() {
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conf := []byte(`{
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"name": "test",
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"type": "iplink",
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"cniVersion": "0.3.1",
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"mac": "c2:11:22:33:44:55",
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"prevResult": {
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"interfaces": [
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{"name": "dummy0", "sandbox":"netns"}
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],
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"ips": [
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{
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"version": "4",
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"address": "10.0.0.2/24",
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"gateway": "10.0.0.1",
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"interface": 0
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}
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]
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}
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}`)
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: originalNS.Path(),
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IfName: IFNAME,
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StdinData: conf,
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}
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err := originalNS.Do(func(ns.NetNS) error {
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defer GinkgoRecover()
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r, _, err := testutils.CmdAddWithArgs(args, func() error {
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return cmdAdd(args)
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})
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Expect(err).NotTo(HaveOccurred())
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result, err := current.GetResult(r)
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Expect(err).NotTo(HaveOccurred())
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Expect(len(result.Interfaces)).To(Equal(1))
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Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
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Expect(len(result.IPs)).To(Equal(1))
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Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
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link, err := netlink.LinkByName(IFNAME)
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Expect(err).NotTo(HaveOccurred())
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hw, err := net.ParseMAC("c2:11:22:33:44:55")
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Expect(err).NotTo(HaveOccurred())
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Expect(link.Attrs().HardwareAddr).To(Equal(hw))
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err = testutils.CmdDel(originalNS.Path(),
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args.ContainerID, "", func() error { return cmdDel(args) })
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Expect(err).NotTo(HaveOccurred())
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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})
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It("configures and deconfigures mac address (from CNI_ARGS) with ADD/DEL", func() {
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conf := []byte(`{
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"name": "test",
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"type": "iplink",
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"cniVersion": "0.3.1",
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"prevResult": {
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"interfaces": [
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{"name": "dummy0", "sandbox":"netns"}
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],
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"ips": [
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{
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"version": "4",
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"address": "10.0.0.2/24",
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"gateway": "10.0.0.1",
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"interface": 0
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}
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]
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}
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}`)
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: originalNS.Path(),
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IfName: IFNAME,
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StdinData: conf,
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Args: "IgnoreUnknown=true;MAC=c2:11:22:33:44:66",
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}
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err := originalNS.Do(func(ns.NetNS) error {
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defer GinkgoRecover()
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r, _, err := testutils.CmdAddWithArgs(args, func() error {
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return cmdAdd(args)
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})
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Expect(err).NotTo(HaveOccurred())
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result, err := current.GetResult(r)
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Expect(err).NotTo(HaveOccurred())
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Expect(len(result.Interfaces)).To(Equal(1))
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Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
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Expect(len(result.IPs)).To(Equal(1))
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Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
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link, err := netlink.LinkByName(IFNAME)
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Expect(err).NotTo(HaveOccurred())
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hw, err := net.ParseMAC("c2:11:22:33:44:66")
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Expect(err).NotTo(HaveOccurred())
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fmt.Printf("%v, %v\n", link.Attrs().HardwareAddr, hw)
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Expect(link.Attrs().HardwareAddr).To(Equal(hw))
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err = testutils.CmdDel(originalNS.Path(),
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args.ContainerID, "", func() error { return cmdDel(args) })
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Expect(err).NotTo(HaveOccurred())
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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})
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It("configures and deconfigures promiscuous mode with CNI 0.4.0 ADD/DEL", func() {
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conf := []byte(`{
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"name": "test",
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"type": "iplink",
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"cniVersion": "0.4.0",
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"promisc": true,
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"prevResult": {
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"interfaces": [
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{"name": "dummy0", "sandbox":"netns"}
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],
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"ips": [
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{
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"version": "4",
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"address": "10.0.0.2/24",
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"gateway": "10.0.0.1",
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"interface": 0
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}
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]
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}
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}`)
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args := &skel.CmdArgs{
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ContainerID: "dummy",
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Netns: originalNS.Path(),
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IfName: IFNAME,
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StdinData: conf,
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}
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err := originalNS.Do(func(ns.NetNS) error {
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defer GinkgoRecover()
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r, _, err := testutils.CmdAddWithArgs(args, func() error {
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return cmdAdd(args)
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})
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Expect(err).NotTo(HaveOccurred())
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result, err := current.GetResult(r)
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Expect(err).NotTo(HaveOccurred())
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Expect(len(result.Interfaces)).To(Equal(1))
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Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
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Expect(len(result.IPs)).To(Equal(1))
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Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
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link, err := netlink.LinkByName(IFNAME)
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Expect(err).NotTo(HaveOccurred())
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Expect(link.Attrs().Promisc).To(Equal(1))
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n := &TuningConf{}
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err = json.Unmarshal([]byte(conf), &n)
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Expect(err).NotTo(HaveOccurred())
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cniVersion := "0.4.0"
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_, confString, err := buildOneConfig("testConfig", cniVersion, n, r)
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Expect(err).NotTo(HaveOccurred())
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args.StdinData = confString
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err = testutils.CmdCheckWithArgs(args, func() error {
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return cmdCheck(args)
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})
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Expect(err).NotTo(HaveOccurred())
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err = testutils.CmdDel(originalNS.Path(),
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args.ContainerID, "", func() error { return cmdDel(args) })
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Expect(err).NotTo(HaveOccurred())
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return nil
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})
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Expect(err).NotTo(HaveOccurred())
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})
|
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|
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It("configures and deconfigures mtu with CNI 0.4.0 ADD/DEL", func() {
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conf := []byte(`{
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"name": "test",
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"type": "iplink",
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"cniVersion": "0.4.0",
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"mtu": 1454,
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"prevResult": {
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"interfaces": [
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{"name": "dummy0", "sandbox":"netns"}
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],
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"ips": [
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{
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"version": "4",
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"address": "10.0.0.2/24",
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"gateway": "10.0.0.1",
|
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"interface": 0
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}
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]
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}
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}`)
|
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|
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args := &skel.CmdArgs{
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ContainerID: "dummy",
|
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Netns: originalNS.Path(),
|
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IfName: IFNAME,
|
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StdinData: conf,
|
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}
|
|
|
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err := originalNS.Do(func(ns.NetNS) error {
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defer GinkgoRecover()
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|
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r, _, err := testutils.CmdAddWithArgs(args, func() error {
|
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return cmdAdd(args)
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})
|
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Expect(err).NotTo(HaveOccurred())
|
|
|
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result, err := current.GetResult(r)
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Expect(err).NotTo(HaveOccurred())
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Expect(len(result.Interfaces)).To(Equal(1))
|
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Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
|
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Expect(len(result.IPs)).To(Equal(1))
|
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Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
|
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|
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link, err := netlink.LinkByName(IFNAME)
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Expect(err).NotTo(HaveOccurred())
|
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Expect(link.Attrs().MTU).To(Equal(1454))
|
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|
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n := &TuningConf{}
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err = json.Unmarshal([]byte(conf), &n)
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Expect(err).NotTo(HaveOccurred())
|
|
|
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cniVersion := "0.4.0"
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_, confString, err := buildOneConfig("testConfig", cniVersion, n, r)
|
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Expect(err).NotTo(HaveOccurred())
|
|
|
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args.StdinData = confString
|
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|
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err = testutils.CmdCheckWithArgs(args, func() error {
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return cmdCheck(args)
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})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
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err = testutils.CmdDel(originalNS.Path(),
|
|
args.ContainerID, "", func() error { return cmdDel(args) })
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Expect(err).NotTo(HaveOccurred())
|
|
|
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return nil
|
|
})
|
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Expect(err).NotTo(HaveOccurred())
|
|
})
|
|
|
|
It("configures and deconfigures mac address (from conf file) with CNI v4.0 ADD/DEL", func() {
|
|
conf := []byte(`{
|
|
"name": "test",
|
|
"type": "iplink",
|
|
"cniVersion": "0.4.0",
|
|
"mac": "c2:11:22:33:44:55",
|
|
"prevResult": {
|
|
"interfaces": [
|
|
{"name": "dummy0", "sandbox":"netns"}
|
|
],
|
|
"ips": [
|
|
{
|
|
"version": "4",
|
|
"address": "10.0.0.2/24",
|
|
"gateway": "10.0.0.1",
|
|
"interface": 0
|
|
}
|
|
]
|
|
}
|
|
}`)
|
|
|
|
args := &skel.CmdArgs{
|
|
ContainerID: "dummy",
|
|
Netns: originalNS.Path(),
|
|
IfName: IFNAME,
|
|
StdinData: conf,
|
|
}
|
|
|
|
err := originalNS.Do(func(ns.NetNS) error {
|
|
defer GinkgoRecover()
|
|
|
|
r, _, err := testutils.CmdAddWithArgs(args, func() error {
|
|
return cmdAdd(args)
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
result, err := current.GetResult(r)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
Expect(len(result.Interfaces)).To(Equal(1))
|
|
Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
|
|
Expect(len(result.IPs)).To(Equal(1))
|
|
Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
|
|
|
|
link, err := netlink.LinkByName(IFNAME)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
hw, err := net.ParseMAC("c2:11:22:33:44:55")
|
|
Expect(err).NotTo(HaveOccurred())
|
|
Expect(link.Attrs().HardwareAddr).To(Equal(hw))
|
|
|
|
n := &TuningConf{}
|
|
err = json.Unmarshal([]byte(conf), &n)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
cniVersion := "0.4.0"
|
|
_, confString, err := buildOneConfig("testConfig", cniVersion, n, r)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
args.StdinData = confString
|
|
|
|
err = testutils.CmdCheckWithArgs(args, func() error {
|
|
return cmdCheck(args)
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
err = testutils.CmdDel(originalNS.Path(),
|
|
args.ContainerID, "", func() error { return cmdDel(args) })
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
return nil
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
})
|
|
|
|
It("configures and deconfigures mac address (from CNI_ARGS) with CNI v4 ADD/DEL", func() {
|
|
conf := []byte(`{
|
|
"name": "test",
|
|
"type": "iplink",
|
|
"cniVersion": "0.4.0",
|
|
"prevResult": {
|
|
"interfaces": [
|
|
{"name": "dummy0", "sandbox":"netns"}
|
|
],
|
|
"ips": [
|
|
{
|
|
"version": "4",
|
|
"address": "10.0.0.2/24",
|
|
"gateway": "10.0.0.1",
|
|
"interface": 0
|
|
}
|
|
]
|
|
}
|
|
}`)
|
|
|
|
args := &skel.CmdArgs{
|
|
ContainerID: "dummy",
|
|
Netns: originalNS.Path(),
|
|
IfName: IFNAME,
|
|
StdinData: conf,
|
|
Args: "IgnoreUnknown=true;MAC=c2:11:22:33:44:66",
|
|
}
|
|
|
|
err := originalNS.Do(func(ns.NetNS) error {
|
|
defer GinkgoRecover()
|
|
|
|
r, _, err := testutils.CmdAddWithArgs(args, func() error {
|
|
return cmdAdd(args)
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
result, err := current.GetResult(r)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
Expect(len(result.Interfaces)).To(Equal(1))
|
|
Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
|
|
Expect(len(result.IPs)).To(Equal(1))
|
|
Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
|
|
|
|
link, err := netlink.LinkByName(IFNAME)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
hw, err := net.ParseMAC("c2:11:22:33:44:66")
|
|
Expect(err).NotTo(HaveOccurred())
|
|
Expect(link.Attrs().HardwareAddr).To(Equal(hw))
|
|
|
|
n := &TuningConf{}
|
|
err = json.Unmarshal([]byte(conf), &n)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
cniVersion := "0.4.0"
|
|
_, confString, err := buildOneConfig("testConfig", cniVersion, n, r)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
args.StdinData = confString
|
|
|
|
err = testutils.CmdCheckWithArgs(args, func() error {
|
|
return cmdCheck(args)
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
err = testutils.CmdDel(originalNS.Path(),
|
|
args.ContainerID, "", func() error { return cmdDel(args) })
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
return nil
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
})
|
|
|
|
It("configures and deconfigures mac address (from RuntimeConfig) with ADD/DEL", func() {
|
|
conf := []byte(`{
|
|
"name": "test",
|
|
"type": "iplink",
|
|
"cniVersion": "0.3.1",
|
|
"capabilities": {"mac": true},
|
|
"RuntimeConfig": {
|
|
"mac": "c2:11:22:33:44:55"
|
|
},
|
|
"prevResult": {
|
|
"interfaces": [
|
|
{"name": "dummy0", "sandbox":"netns"}
|
|
],
|
|
"ips": [
|
|
{
|
|
"version": "4",
|
|
"address": "10.0.0.2/24",
|
|
"gateway": "10.0.0.1",
|
|
"interface": 0
|
|
}
|
|
]
|
|
}
|
|
}`)
|
|
|
|
args := &skel.CmdArgs{
|
|
ContainerID: "dummy",
|
|
Netns: originalNS.Path(),
|
|
IfName: IFNAME,
|
|
StdinData: conf,
|
|
}
|
|
|
|
err := originalNS.Do(func(ns.NetNS) error {
|
|
defer GinkgoRecover()
|
|
|
|
r, _, err := testutils.CmdAddWithArgs(args, func() error {
|
|
return cmdAdd(args)
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
result, err := current.GetResult(r)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
Expect(len(result.Interfaces)).To(Equal(1))
|
|
Expect(result.Interfaces[0].Name).To(Equal(IFNAME))
|
|
Expect(len(result.IPs)).To(Equal(1))
|
|
Expect(result.IPs[0].Address.String()).To(Equal("10.0.0.2/24"))
|
|
|
|
link, err := netlink.LinkByName(IFNAME)
|
|
Expect(err).NotTo(HaveOccurred())
|
|
hw, err := net.ParseMAC("c2:11:22:33:44:55")
|
|
Expect(err).NotTo(HaveOccurred())
|
|
Expect(link.Attrs().HardwareAddr).To(Equal(hw))
|
|
|
|
err = testutils.CmdDel(originalNS.Path(),
|
|
args.ContainerID, "", func() error { return cmdDel(args) })
|
|
Expect(err).NotTo(HaveOccurred())
|
|
|
|
return nil
|
|
})
|
|
Expect(err).NotTo(HaveOccurred())
|
|
})
|
|
|
|
})
|