9 "ovn4nfv-k8s-plugin/internal/pkg/config"
10 "ovn4nfv-k8s-plugin/internal/pkg/network"
14 "github.com/containernetworking/cni/pkg/types/current"
15 "github.com/containernetworking/plugins/pkg/ip"
16 "github.com/containernetworking/plugins/pkg/ns"
17 "github.com/sirupsen/logrus"
18 "github.com/vishvananda/netlink"
21 func renameLink(curName, newName string) error {
22 link, err := netlink.LinkByName(curName)
27 if err := netlink.LinkSetDown(link); err != nil {
30 if err := netlink.LinkSetName(link, newName); err != nil {
33 if err := netlink.LinkSetUp(link); err != nil {
41 func CreateNodeOVSInternalPort(nodeintfipaddr, nodeintfmacaddr, node string) error {
42 nodeName := strings.ToLower(node)
43 nodeOVSInternalIntfName := config.GetNodeIntfName(nodeName)
45 hwAddr, err := net.ParseMAC(nodeintfmacaddr)
47 logrus.Errorf("Error is converting %q to net hwaddr: %v", nodeOVSInternalIntfName, err)
48 return fmt.Errorf("Error is converting %q to net hwaddr: %v", nodeOVSInternalIntfName, err)
52 "add-port", "br-int", nodeOVSInternalIntfName, "--", "set",
53 "interface", nodeOVSInternalIntfName, "type=internal",
54 fmt.Sprintf("mac_in_use=%s", strings.ReplaceAll(hwAddr.String(), ":", "\\:")),
55 fmt.Sprintf("mac=%s", strings.ReplaceAll(hwAddr.String(), ":", "\\:")),
56 fmt.Sprintf("external_ids:iface-id=%s", nodeOVSInternalIntfName),
58 logrus.Infof("ovs-vsctl args - %v", ovsArgs)
61 out, err := exec.Command("ovs-vsctl", ovsArgs...).CombinedOutput()
63 logrus.Errorf("failure in creating Node OVS internal port - %s: %v - %q", nodeOVSInternalIntfName, err, string(out))
64 return fmt.Errorf("failure in creating Node OVS internal port - %s: %v - %q", nodeOVSInternalIntfName, err, string(out))
66 logrus.Infof("ovs-vsctl args - %v output:%v", ovsArgs, string(out))
68 link, err := netlink.LinkByName(nodeOVSInternalIntfName)
70 logrus.Errorf("failed to get netlink for Node OVS internal port %s: %v", nodeOVSInternalIntfName, err)
71 return fmt.Errorf("failed to get netlink for Node OVS internal port %s: %v", nodeOVSInternalIntfName, err)
74 if err := netlink.LinkSetUp(link); err != nil {
75 logrus.Errorf("failed to set up netlink for Node OVS internal port %s: %v", nodeOVSInternalIntfName, err)
76 return fmt.Errorf("failed to set up netlink for Node OVS internal port %s: %v", nodeOVSInternalIntfName, err)
79 addr, err := netlink.ParseAddr(nodeintfipaddr)
81 logrus.Errorf("failed to parse IP addr %s: %v", nodeintfipaddr, err)
82 return fmt.Errorf("failed to parse IP addr %s: %v", nodeintfipaddr, err)
84 err = netlink.AddrAdd(link, addr)
86 logrus.Errorf("failed to parse IP addr %s: %v", nodeintfipaddr, err)
87 return fmt.Errorf("failed to add IP addr %s to %s: %v", nodeintfipaddr, nodeOVSInternalIntfName, err)
90 err = network.SetupAndEnsureIPTables(network.MasqRules(nodeOVSInternalIntfName))
92 logrus.Errorf("failed to apply snat rule for %s: %v", nodeOVSInternalIntfName, err)
93 return fmt.Errorf("failed to apply snat rule for %s: %v", nodeOVSInternalIntfName, err)
99 func setupInterface(netns ns.NetNS, containerID, ifName, macAddress, ipAddress, gatewayIP, defaultGateway string, idx, mtu int) (*current.Interface, *current.Interface, error) {
100 hostIface := ¤t.Interface{}
101 contIface := ¤t.Interface{}
103 var oldHostVethName string
104 err := netns.Do(func(hostNS ns.NetNS) error {
105 // create the veth pair in the container and move host end into host netns
106 hostVeth, containerVeth, err := ip.SetupVeth(ifName, mtu, hostNS)
108 return fmt.Errorf("failed to setup veth %s: %v", ifName, err)
111 hostIface.Mac = hostVeth.HardwareAddr.String()
112 contIface.Name = containerVeth.Name
114 link, err := netlink.LinkByName(contIface.Name)
116 return fmt.Errorf("failed to lookup %s: %v", contIface.Name, err)
119 hwAddr, err := net.ParseMAC(macAddress)
121 return fmt.Errorf("failed to parse mac address for %s: %v", contIface.Name, err)
123 err = netlink.LinkSetHardwareAddr(link, hwAddr)
125 return fmt.Errorf("failed to add mac address %s to %s: %v", macAddress, contIface.Name, err)
127 contIface.Mac = macAddress
128 contIface.Sandbox = netns.Path()
130 addr, err := netlink.ParseAddr(ipAddress)
134 err = netlink.AddrAdd(link, addr)
136 return fmt.Errorf("failed to add IP addr %s to %s: %v", ipAddress, contIface.Name, err)
139 if defaultGateway == "true" {
140 gw := net.ParseIP(gatewayIP)
142 return fmt.Errorf("parse ip of gateway failed")
144 err = ip.AddRoute(nil, gw, link)
146 logrus.Errorf("ip.AddRoute failed %v gw %v link %v", err, gw, link)
150 oldHostVethName = hostVeth.Name
158 // rename the host end of veth pair
159 hostIface.Name = containerID[:14] + strconv.Itoa(idx)
160 if err := renameLink(oldHostVethName, hostIface.Name); err != nil {
161 return nil, nil, fmt.Errorf("failed to rename %s to %s: %v", oldHostVethName, hostIface.Name, err)
164 return hostIface, contIface, nil
167 // ConfigureInterface sets up the container interface
168 var ConfigureInterface = func(containerNetns, containerID, ifName, namespace, podName, macAddress, ipAddress, gatewayIP, interfaceName, defaultGateway string, idx, mtu int) ([]*current.Interface, error) {
169 netns, err := ns.GetNS(containerNetns)
171 return nil, fmt.Errorf("failed to open netns %q: %v", containerNetns, err)
176 if interfaceName != "*" {
177 ifaceID = fmt.Sprintf("%s_%s_%s", namespace, podName, interfaceName)
179 ifaceID = fmt.Sprintf("%s_%s", namespace, podName)
180 interfaceName = ifName
181 defaultGateway = "true"
183 hostIface, contIface, err := setupInterface(netns, containerID, interfaceName, macAddress, ipAddress, gatewayIP, defaultGateway, idx, mtu)
189 "add-port", "br-int", hostIface.Name, "--", "set",
190 "interface", hostIface.Name,
191 fmt.Sprintf("external_ids:attached_mac=%s", macAddress),
192 fmt.Sprintf("external_ids:iface-id=%s", ifaceID),
193 fmt.Sprintf("external_ids:ip_address=%s", ipAddress),
194 fmt.Sprintf("external_ids:sandbox=%s", containerID),
198 out, err = exec.Command("ovs-vsctl", ovsArgs...).CombinedOutput()
200 return nil, fmt.Errorf("failure in plugging pod interface: %v\n %q", err, string(out))
203 return []*current.Interface{hostIface, contIface}, nil
206 func setupRoute(netns ns.NetNS, dst, gw, dev string) error {
207 // Add Route to the namespace
208 err := netns.Do(func(_ ns.NetNS) error {
209 dstAddr, dstAddrNet, _ := net.ParseCIDR(dst)
210 ipNet := net.IPNet{IP: dstAddr, Mask: dstAddrNet.Mask}
211 link, err := netlink.LinkByName(dev)
212 err = ip.AddRoute(&ipNet, net.ParseIP(gw), link)
214 logrus.Errorf("ip.AddRoute failed %v dst %v gw %v", err, dst, gw)
221 // ConfigureRoute sets up the container routes
222 var ConfigureRoute = func(containerNetns, dst, gw, dev string) error {
223 netns, err := ns.GetNS(containerNetns)
225 return fmt.Errorf("failed to open netns %q: %v", containerNetns, err)
228 err = setupRoute(netns, dst, gw, dev)
232 // PlatformSpecificCleanup deletes the OVS port
233 func PlatformSpecificCleanup(ifaceName string) (bool, error) {
236 "del-port", "br-int", ifaceName,
238 out, err := exec.Command("ovs-vsctl", ovsArgs...).CombinedOutput()
239 if err != nil && !strings.Contains(string(out), "no port named") {
240 // DEL should be idempotent; don't return an error just log it
241 logrus.Warningf("failed to delete OVS port %s: %v\n %q", ifaceName, err, string(out))