func cmdAdd(args *skel.CmdArgs) error { n, err := loadNetConf(args.StdinData) if err != nil { return err } br, err := setupBridge(n) if err != nil { return err } if err = setupVeth(args.Netns, br, args.IfName, n.MTU); err != nil { return err } // run the IPAM plugin and get back the config to apply result, err := ipam.ExecAdd(n.IPAM.Type, args.StdinData) if err != nil { return err } if result.IP4 == nil { return errors.New("IPAM plugin returned missing IPv4 config") } if result.IP4.Gateway == nil && n.IsGW { result.IP4.Gateway = calcGatewayIP(&result.IP4.IP) } err = ns.WithNetNSPath(args.Netns, false, func(hostNS *os.File) error { return ipam.ConfigureIface(args.IfName, result) }) if err != nil { return err } if n.IsGW { gwn := &net.IPNet{ IP: result.IP4.Gateway, Mask: result.IP4.IP.Mask, } if err = ensureBridgeAddr(br, gwn); err != nil { return err } if err := ip.EnableIP4Forward(); err != nil { return fmt.Errorf("failed to enable forwarding: %v", err) } } if n.IPMasq { chain := "CNI-" + n.Name if err = ip.SetupIPMasq(ip.Network(&result.IP4.IP), chain); err != nil { return err } } return result.Print() }
func cmdAdd(args *skel.CmdArgs) error { n, err := loadConf(args.StdinData) if err != nil { return err } netns, err := os.Open(args.Netns) if err != nil { return fmt.Errorf("failed to open netns %q: %v", netns, err) } defer netns.Close() tmpName, err := ip.RandomVethName() if err != nil { return err } if err = createIpvlan(n, tmpName, netns); err != nil { return err } // run the IPAM plugin and get back the config to apply result, err := plugin.ExecAdd(n.IPAM.Type, args.StdinData) if err != nil { return err } if result.IP4 == nil { return errors.New("IPAM plugin returned missing IPv4 config") } err = ns.WithNetNS(netns, func(_ *os.File) error { err := renameLink(tmpName, args.IfName) if err != nil { return fmt.Errorf("failed to rename ipvlan to %q: %v", args.IfName, err) } return plugin.ConfigureIface(args.IfName, result) }) if err != nil { return err } if n.IPMasq { chain := "CNI-" + n.Name if err = ip.SetupIPMasq(ip.Network(&result.IP4.IP), chain); err != nil { return err } } return plugin.PrintResult(result) }
func cmdAdd(args *skel.CmdArgs) error { n, err := loadNetConf(args.StdinData) if err != nil { return err } // run the IPAM plugin and get back the config to apply result, err := plugin.ExecAdd(n.IPAM.Type, args.StdinData) if err != nil { return err } if result.IP4 == nil { return errors.New("IPAM plugin returned missing IPv4 config") } if result.IP4.Gateway == nil && n.IsGW { result.IP4.Gateway = calcGatewayIP(&result.IP4.IP) } br, err := setupBridge(n, result.IP4) if err != nil { return err } if err = setupVeth(args.Netns, br, args.IfName, n.MTU, result); err != nil { return err } if n.IPMasq { chain := "CNI-" + n.Name if err = ip.SetupIPMasq(ip.Network(&result.IP4.IP), chain); err != nil { return err } } return plugin.PrintResult(result) }