c47ff356c1
This should avoid weird behaviours of having an interface up without an address, also less confusing moments for users
75 lines
1.5 KiB
Go
75 lines
1.5 KiB
Go
package dsnet
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import (
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"net"
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"github.com/vishvananda/netlink"
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)
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func Up() {
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conf := MustLoadDsnetConfig()
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CreateLink(conf)
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ConfigureDevice(conf)
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RunPostUp(conf)
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}
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func RunPostUp(conf *DsnetConfig) {
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ShellOut(conf.PostUp, "PostUp")
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}
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// CreateLink sets up the WG interface and link with the correct
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// address
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func CreateLink(conf *DsnetConfig) {
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linkAttrs := netlink.NewLinkAttrs()
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linkAttrs.Name = conf.InterfaceName
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link := &netlink.GenericLink{
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LinkAttrs: linkAttrs,
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LinkType: "wireguard",
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}
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err := netlink.LinkAdd(link)
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if err != nil {
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ExitFail("Could not add interface '%s' (%v)", conf.InterfaceName, err)
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}
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if len(conf.IP) == 0 && len(conf.IP6) == 0 {
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ExitFail("No IPv4 or IPv6 network defined in config")
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}
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if len(conf.IP) != 0 {
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addr := &netlink.Addr{
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IPNet: &net.IPNet{
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IP: conf.IP,
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Mask: conf.Network.IPNet.Mask,
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},
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}
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err = netlink.AddrAdd(link, addr)
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if err != nil {
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ExitFail("Could not add ipv4 addr %s to interface %s", addr.IP, err)
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}
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}
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if len(conf.IP6) != 0 {
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addr6 := &netlink.Addr{
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IPNet: &net.IPNet{
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IP: conf.IP6,
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Mask: conf.Network6.IPNet.Mask,
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},
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}
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err = netlink.AddrAdd(link, addr6)
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if err != nil {
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ExitFail("Could not add ipv6 addr %s to interface %s", addr6.IP, err)
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}
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}
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// bring up interface (UNKNOWN state instead of UP, a wireguard quirk)
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err = netlink.LinkSetUp(link)
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if err != nil {
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ExitFail("Could not bring up device '%s' (%v)", conf.InterfaceName, err)
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}
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}
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