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// Copyright 2018 Google LLC. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package expr
import (
"fmt"
"github.com/google/nftables/binaryutil"
"github.com/mdlayher/netlink"
"golang.org/x/sys/unix"
)
type RtKey uint32
const (
RtClassid RtKey = unix.NFT_RT_CLASSID
RtNexthop4 RtKey = unix.NFT_RT_NEXTHOP4
RtNexthop6 RtKey = unix.NFT_RT_NEXTHOP6
RtTCPMSS RtKey = unix.NFT_RT_TCPMSS
)
type Rt struct {
Register uint32
Key RtKey
}
func (e *Rt) marshal(fam byte) ([]byte, error) {
data, err := netlink.MarshalAttributes([]netlink.Attribute{
{Type: unix.NFTA_RT_KEY, Data: binaryutil.BigEndian.PutUint32(uint32(e.Key))},
{Type: unix.NFTA_RT_DREG, Data: binaryutil.BigEndian.PutUint32(e.Register)},
})
if err != nil {
return nil, err
}
return netlink.MarshalAttributes([]netlink.Attribute{
{Type: unix.NFTA_EXPR_NAME, Data: []byte("rt\x00")},
{Type: unix.NLA_F_NESTED | unix.NFTA_EXPR_DATA, Data: data},
})
}
func (e *Rt) unmarshal(fam byte, data []byte) error {
return fmt.Errorf("not yet implemented")
}
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