mirror of https://github.com/subgraph/fw-daemon
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
1.0 KiB
42 lines
1.0 KiB
7 years ago
|
// Copyright 2012 Google, Inc. All rights reserved.
|
||
|
|
//
|
||
|
|
// Use of this source code is governed by a BSD-style license
|
||
|
|
// that can be found in the LICENSE file in the root of the source
|
||
|
|
// tree.
|
||
|
|
|
||
|
|
package layers
|
||
|
|
|
||
|
|
import (
|
||
|
|
"github.com/google/gopacket"
|
||
|
|
"net"
|
||
|
|
)
|
||
|
|
|
||
|
|
// FDDI contains the header for FDDI frames.
|
||
|
|
type FDDI struct {
|
||
|
|
BaseLayer
|
||
|
|
FrameControl FDDIFrameControl
|
||
|
|
Priority uint8
|
||
|
|
SrcMAC, DstMAC net.HardwareAddr
|
||
|
|
}
|
||
|
|
|
||
|
|
// LayerType returns LayerTypeFDDI.
|
||
|
|
func (f *FDDI) LayerType() gopacket.LayerType { return LayerTypeFDDI }
|
||
|
|
|
||
|
|
// LinkFlow returns a new flow of type EndpointMAC.
|
||
|
|
func (f *FDDI) LinkFlow() gopacket.Flow {
|
||
|
|
return gopacket.NewFlow(EndpointMAC, f.SrcMAC, f.DstMAC)
|
||
|
|
}
|
||
|
|
|
||
|
|
func decodeFDDI(data []byte, p gopacket.PacketBuilder) error {
|
||
|
|
f := &FDDI{
|
||
|
|
FrameControl: FDDIFrameControl(data[0] & 0xF8),
|
||
|
|
Priority: data[0] & 0x07,
|
||
|
|
SrcMAC: net.HardwareAddr(data[1:7]),
|
||
|
|
DstMAC: net.HardwareAddr(data[7:13]),
|
||
|
|
BaseLayer: BaseLayer{data[:13], data[13:]},
|
||
|
|
}
|
||
|
|
p.SetLinkLayer(f)
|
||
|
|
p.AddLayer(f)
|
||
|
|
return p.NextDecoder(f.FrameControl)
|
||
|
|
}
|