-
Notifications
You must be signed in to change notification settings - Fork 41
/
tun_linux.go
64 lines (54 loc) · 1.06 KB
/
tun_linux.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
package tun
import (
"fmt"
"io"
"net"
"github.com/vishvananda/netlink"
)
func (l *tunListener) createTun() (dev io.ReadWriteCloser, name string, ip net.IP, err error) {
dev, name, err = l.createTunDevice()
if err != nil {
return
}
ifce, err := net.InterfaceByName(name)
if err != nil {
return
}
link, err := netlink.LinkByName(name)
if err != nil {
return
}
for _, net := range l.md.config.Net {
if err = netlink.AddrAdd(link, &netlink.Addr{
IPNet: &net,
}); err != nil {
l.logger.Error(err)
continue
}
}
if len(l.md.config.Net) > 0 {
ip = l.md.config.Net[0].IP
}
if err = netlink.LinkSetUp(link); err != nil {
return
}
if err = l.addRoutes(ifce); err != nil {
return
}
return
}
func (l *tunListener) addRoutes(ifce *net.Interface) error {
for _, route := range l.routes {
r := netlink.Route{
Dst: route.Net,
Gw: route.Gateway,
}
if r.Gw == nil {
r.LinkIndex = ifce.Index
}
if err := netlink.RouteReplace(&r); err != nil {
return fmt.Errorf("add route %v %v: %v", r.Dst, r.Gw, err)
}
}
return nil
}