/
utils.go
51 lines (44 loc) · 1.32 KB
/
utils.go
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// Copyright (c) 2017 Che Wei, Lin
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"fmt"
"net"
"strings"
"github.com/containernetworking/plugins/pkg/ip"
"github.com/vishvananda/netlink"
)
// vxlanIfName returns formatted vxlan interface name
func vxlanIfName(vtepIP string) string {
return fmt.Sprintf("vxif%s", strings.Replace(vtepIP, ".", "_", -1))
}
// setLinkUp sets the link up
func setLinkUp(name string) error {
iface, err := netlink.LinkByName(name)
if err != nil {
return err
}
return netlink.LinkSetUp(iface)
}
func enableIPForward(family int) error {
if family == netlink.FAMILY_V4 {
return ip.EnableIP4Forward()
}
return ip.EnableIP6Forward()
}
//We use the first IP as gateway address
func getNextIP(ipn *net.IPNet) net.IP {
nid := ipn.IP.Mask(ipn.Mask)
return ip.NextIP(nid)
}