nftables/counter.go

64 lines
1.4 KiB
Go

// 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 nftables
import (
"github.com/google/nftables/expr"
"github.com/mdlayher/netlink"
"golang.org/x/sys/unix"
)
type CounterObj struct {
Table *Table
Name string // e.g. “fwded”
Bytes uint64
Packets uint64
}
func (c *CounterObj) unmarshal(ad *netlink.AttributeDecoder) error {
for ad.Next() {
switch ad.Type() {
case unix.NFTA_COUNTER_BYTES:
c.Bytes = ad.Uint64()
case unix.NFTA_COUNTER_PACKETS:
c.Packets = ad.Uint64()
}
}
return ad.Err()
}
func (c *CounterObj) data() expr.Any {
return &expr.Counter{
Bytes: c.Bytes,
Packets: c.Packets,
}
}
func (c *CounterObj) name() string {
return c.Name
}
func (c *CounterObj) objType() ObjType {
return ObjTypeCounter
}
func (c *CounterObj) table() *Table {
return c.Table
}
func (c *CounterObj) family() TableFamily {
return c.Table.Family
}