1cad0a1d6c
Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion) Remove loopback code from veth strategy Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion) Looback strategy: Get rid of uneeded code in Create Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion) Use append when building network strategy list Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion) Swap loopback and veth strategies in Networks list Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion) Revert "Swap loopback and veth strategies in Networks list" This reverts commit 3b8b2c8454171d79bed5e9a80165172617e92fc7. Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion) When initializing networks, only return from the loop if there is an error Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: https://github.com/timthelion)
94 lines
2.5 KiB
Go
94 lines
2.5 KiB
Go
package network
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import (
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"fmt"
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"github.com/dotcloud/docker/pkg/libcontainer"
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"github.com/dotcloud/docker/pkg/libcontainer/utils"
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)
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// Veth is a network strategy that uses a bridge and creates
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// a veth pair, one that stays outside on the host and the other
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// is placed inside the container's namespace
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type Veth struct {
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}
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func (v *Veth) Create(n *libcontainer.Network, nspid int, context libcontainer.Context) error {
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var (
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bridge string
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prefix string
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exists bool
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)
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if bridge, exists = n.Context["bridge"]; !exists {
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return fmt.Errorf("bridge does not exist in network context")
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}
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if prefix, exists = n.Context["prefix"]; !exists {
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return fmt.Errorf("veth prefix does not exist in network context")
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}
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name1, name2, err := createVethPair(prefix)
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if err != nil {
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return err
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}
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context["veth-host"] = name1
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context["veth-child"] = name2
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if err := SetInterfaceMaster(name1, bridge); err != nil {
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return err
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}
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if err := SetMtu(name1, n.Mtu); err != nil {
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return err
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}
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if err := InterfaceUp(name1); err != nil {
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return err
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}
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if err := SetInterfaceInNamespacePid(name2, nspid); err != nil {
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return err
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}
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return nil
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}
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func (v *Veth) Initialize(config *libcontainer.Network, context libcontainer.Context) error {
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var (
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vethChild string
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exists bool
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)
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if vethChild, exists = context["veth-child"]; !exists {
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return fmt.Errorf("vethChild does not exist in network context")
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}
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if err := InterfaceDown(vethChild); err != nil {
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return fmt.Errorf("interface down %s %s", vethChild, err)
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}
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if err := ChangeInterfaceName(vethChild, "eth0"); err != nil {
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return fmt.Errorf("change %s to eth0 %s", vethChild, err)
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}
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if err := SetInterfaceIp("eth0", config.Address); err != nil {
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return fmt.Errorf("set eth0 ip %s", err)
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}
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if err := SetMtu("eth0", config.Mtu); err != nil {
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return fmt.Errorf("set eth0 mtu to %d %s", config.Mtu, err)
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}
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if err := InterfaceUp("eth0"); err != nil {
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return fmt.Errorf("eth0 up %s", err)
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}
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if config.Gateway != "" {
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if err := SetDefaultGateway(config.Gateway); err != nil {
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return fmt.Errorf("set gateway to %s %s", config.Gateway, err)
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}
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}
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return nil
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}
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// createVethPair will automatically generage two random names for
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// the veth pair and ensure that they have been created
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func createVethPair(prefix string) (name1 string, name2 string, err error) {
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name1, err = utils.GenerateRandomName(prefix, 4)
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if err != nil {
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return
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}
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name2, err = utils.GenerateRandomName(prefix, 4)
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if err != nil {
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return
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}
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if err = CreateVethPair(name1, name2); err != nil {
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return
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}
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return
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}
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