nebula/overlay/tun.go

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2021-11-12 06:37:29 +08:00
package overlay
import (
"net"
"github.com/sirupsen/logrus"
"github.com/slackhq/nebula/config"
)
const DefaultMTU = 1300
func NewDeviceFromConfig(c *config.C, l *logrus.Logger, tunCidr *net.IPNet, routes, unsafeRoutes []Route, fd *int, routines int) (Device, error) {
switch {
case c.GetBool("tun.disabled", false):
tun := newDisabledTun(tunCidr, c.GetInt("tun.tx_queue", 500), c.GetBool("stats.message_metrics", false), l)
return tun, nil
case fd != nil:
return newTunFromFd(
l,
*fd,
tunCidr,
c.GetInt("tun.mtu", DefaultMTU),
routes,
unsafeRoutes,
c.GetInt("tun.tx_queue", 500),
)
default:
return newTun(
l,
c.GetString("tun.dev", ""),
tunCidr,
c.GetInt("tun.mtu", DefaultMTU),
routes,
unsafeRoutes,
c.GetInt("tun.tx_queue", 500),
routines > 1,
)
}
}