9906fac59a
Bumps [github.com/vishvananda/netlink](https://github.com/vishvananda/netlink) from 1.2.1-beta.2 to 1.3.0. - [Release notes](https://github.com/vishvananda/netlink/releases) - [Commits](https://github.com/vishvananda/netlink/compare/v1.2.1-beta.2...v1.3.0) --- updated-dependencies: - dependency-name: github.com/vishvananda/netlink dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>
113 lines
2.6 KiB
Go
113 lines
2.6 KiB
Go
package netlink
|
|
|
|
import (
|
|
"github.com/vishvananda/netlink/nl"
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
// ChainDel will delete a chain from the system.
|
|
func ChainDel(link Link, chain Chain) error {
|
|
// Equivalent to: `tc chain del $chain`
|
|
return pkgHandle.ChainDel(link, chain)
|
|
}
|
|
|
|
// ChainDel will delete a chain from the system.
|
|
// Equivalent to: `tc chain del $chain`
|
|
func (h *Handle) ChainDel(link Link, chain Chain) error {
|
|
return h.chainModify(unix.RTM_DELCHAIN, 0, link, chain)
|
|
}
|
|
|
|
// ChainAdd will add a chain to the system.
|
|
// Equivalent to: `tc chain add`
|
|
func ChainAdd(link Link, chain Chain) error {
|
|
return pkgHandle.ChainAdd(link, chain)
|
|
}
|
|
|
|
// ChainAdd will add a chain to the system.
|
|
// Equivalent to: `tc chain add`
|
|
func (h *Handle) ChainAdd(link Link, chain Chain) error {
|
|
return h.chainModify(
|
|
unix.RTM_NEWCHAIN,
|
|
unix.NLM_F_CREATE|unix.NLM_F_EXCL,
|
|
link,
|
|
chain)
|
|
}
|
|
|
|
func (h *Handle) chainModify(cmd, flags int, link Link, chain Chain) error {
|
|
req := h.newNetlinkRequest(cmd, flags|unix.NLM_F_ACK)
|
|
index := int32(0)
|
|
if link != nil {
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
index = int32(base.Index)
|
|
}
|
|
msg := &nl.TcMsg{
|
|
Family: nl.FAMILY_ALL,
|
|
Ifindex: index,
|
|
Parent: chain.Parent,
|
|
}
|
|
req.AddData(msg)
|
|
req.AddData(nl.NewRtAttr(nl.TCA_CHAIN, nl.Uint32Attr(chain.Chain)))
|
|
|
|
_, err := req.Execute(unix.NETLINK_ROUTE, 0)
|
|
return err
|
|
}
|
|
|
|
// ChainList gets a list of chains in the system.
|
|
// Equivalent to: `tc chain list`.
|
|
// The list can be filtered by link.
|
|
func ChainList(link Link, parent uint32) ([]Chain, error) {
|
|
return pkgHandle.ChainList(link, parent)
|
|
}
|
|
|
|
// ChainList gets a list of chains in the system.
|
|
// Equivalent to: `tc chain list`.
|
|
// The list can be filtered by link.
|
|
func (h *Handle) ChainList(link Link, parent uint32) ([]Chain, error) {
|
|
req := h.newNetlinkRequest(unix.RTM_GETCHAIN, unix.NLM_F_DUMP)
|
|
index := int32(0)
|
|
if link != nil {
|
|
base := link.Attrs()
|
|
h.ensureIndex(base)
|
|
index = int32(base.Index)
|
|
}
|
|
msg := &nl.TcMsg{
|
|
Family: nl.FAMILY_ALL,
|
|
Ifindex: index,
|
|
Parent: parent,
|
|
}
|
|
req.AddData(msg)
|
|
|
|
msgs, err := req.Execute(unix.NETLINK_ROUTE, unix.RTM_NEWCHAIN)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var res []Chain
|
|
for _, m := range msgs {
|
|
msg := nl.DeserializeTcMsg(m)
|
|
|
|
attrs, err := nl.ParseRouteAttr(m[msg.Len():])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// skip chains from other interfaces
|
|
if link != nil && msg.Ifindex != index {
|
|
continue
|
|
}
|
|
|
|
var chain Chain
|
|
for _, attr := range attrs {
|
|
switch attr.Attr.Type {
|
|
case nl.TCA_CHAIN:
|
|
chain.Chain = native.Uint32(attr.Value)
|
|
chain.Parent = parent
|
|
}
|
|
}
|
|
res = append(res, chain)
|
|
}
|
|
|
|
return res, nil
|
|
}
|