Merge pull request #62 from phemmer/docker/4442-hairpin-nat
enable hairpin mode on virtual interface bridge port
This commit is contained in:
commit
fd6df76562
|
@ -7,6 +7,7 @@ import (
|
|||
"math/rand"
|
||||
"net"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"sync/atomic"
|
||||
"syscall"
|
||||
"unsafe"
|
||||
|
@ -1204,6 +1205,28 @@ func SetMacAddress(name, addr string) error {
|
|||
return nil
|
||||
}
|
||||
|
||||
func SetHairpinMode(iface *net.Interface, enabled bool) error {
|
||||
sysPath := filepath.Join("/sys/class/net", iface.Name, "brport/hairpin_mode")
|
||||
|
||||
sysFile, err := os.OpenFile(sysPath, os.O_WRONLY, 0)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer sysFile.Close()
|
||||
|
||||
var writeVal []byte
|
||||
if enabled {
|
||||
writeVal = []byte("1")
|
||||
} else {
|
||||
writeVal = []byte("0")
|
||||
}
|
||||
if _, err := sysFile.Write(writeVal); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func ChangeName(iface *net.Interface, newName string) error {
|
||||
if len(newName) >= IFNAMSIZ {
|
||||
return fmt.Errorf("Interface name %s too long", newName)
|
||||
|
@ -1224,5 +1247,6 @@ func ChangeName(iface *net.Interface, newName string) error {
|
|||
if _, _, errno := syscall.Syscall(syscall.SYS_IOCTL, uintptr(fd), syscall.SIOCSIFNAME, uintptr(unsafe.Pointer(&data[0]))); errno != 0 {
|
||||
return errno
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
|
@ -95,3 +95,11 @@ func SetMtu(name string, mtu int) error {
|
|||
}
|
||||
return netlink.NetworkSetMTU(iface, mtu)
|
||||
}
|
||||
|
||||
func SetHairpinMode(name string, enabled bool) error {
|
||||
iface, err := net.InterfaceByName(name)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return netlink.SetHairpinMode(iface, enabled)
|
||||
}
|
||||
|
|
|
@ -39,6 +39,9 @@ func (v *Veth) Create(n *Network, nspid int, networkState *NetworkState) error {
|
|||
if err := SetMtu(name1, n.Mtu); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := SetHairpinMode(name1, true); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := InterfaceUp(name1); err != nil {
|
||||
return err
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue