func (p *Packet) Pack(buf *packet.Buffer) error {
tci := uint16(p.Priority)<<13 | p.VLAN
if p.DropEligible {
tci |= 0x10
}
buf.WriteN(tci)
buf.WriteN(p.Type)
return nil
}
func (p *Packet) Pack(buf *packet.Buffer) error {
buf.Write(p.DstAddr)
buf.Write(p.SrcAddr)
if p.Type != LLC {
buf.WriteN(p.Type)
} else {
buf.WriteN(p.Length)
}
return nil
}
func (p *Packet) Pack(buf *packet.Buffer) error {
buf.WriteN(p.Type)
buf.WriteN(p.AddrType)
buf.WriteN(p.AddrLen)
buf.WriteN(p.SrcAddr)
for i := 0; i < 8-int(p.AddrLen); i++ {
buf.WriteN(uint8(0x00))
}
buf.WriteN(p.EtherType)
return nil
}
func (p *Packet) Pack(buf *packet.Buffer) error {
buf.WriteN(p.HWType)
buf.WriteN(p.ProtoType)
buf.WriteN(p.HWAddrLen)
buf.WriteN(p.ProtoAddrLen)
buf.WriteN(p.Operation)
buf.Write(p.HWSrcAddr[len(p.HWSrcAddr)-int(p.HWAddrLen):])
buf.Write(p.ProtoSrcAddr[len(p.ProtoSrcAddr)-int(p.ProtoAddrLen):])
buf.Write(p.HWDstAddr[len(p.HWDstAddr)-int(p.HWAddrLen):])
buf.Write(p.ProtoDstAddr[len(p.ProtoDstAddr)-int(p.ProtoAddrLen):])
return nil
}
func (p *Packet) Pack(buf *packet.Buffer) error {
buf.WriteN(p.DSAP)
buf.WriteN(p.SSAP)
if p.Control&0x1 == 0 || p.Control&0x3 == 0x1 {
buf.WriteN(p.Control)
} else {
buf.WriteN(uint8(p.Control))
}
return nil
}
func (p *Packet) Pack(buf *packet.Buffer) error {
buf.WriteN(byte(p.Type))
buf.WriteN(byte(p.Code))
buf.WriteN(uint16(0x00))
buf.WriteN(p.Body)
if p.csum_seed != 0 {
p.Checksum = ipv4.CalculateChecksum(buf.LayerBytes(), p.csum_seed)
buf.PutUint16N(2, p.Checksum)
}
return nil
}
func (p *Packet) Pack(buf *packet.Buffer) error {
buf.WriteN(p.SrcPort)
buf.WriteN(p.DstPort)
buf.WriteN(p.Length)
if p.csum_seed != 0 {
p.Checksum =
ipv4.CalculateChecksum(buf.LayerBytes(), p.csum_seed)
}
buf.WriteN(p.Checksum)
return nil
}
func (p *Packet) Pack(buf *packet.Buffer) error {
buf.WriteN(p.OUI)
buf.WriteN(p.Type)
return nil
}
func (p *Packet) Pack(buf *packet.Buffer) error {
buf.WriteN((p.Version << 4) | p.IHL)
buf.WriteN(p.TOS)
buf.WriteN(p.Length)
buf.WriteN(p.Id)
buf.WriteN((uint16(p.Flags) << 13) | p.FragOff)
buf.WriteN(p.TTL)
buf.WriteN(p.Protocol)
buf.WriteN(uint16(0x00))
buf.Write(p.SrcAddr.To4())
buf.Write(p.DstAddr.To4())
p.checksum(buf.LayerBytes()[:20])
buf.PutUint16N(10, p.Checksum)
return nil
}
func (p *Packet) Pack(buf *packet.Buffer) error {
buf.WriteN(p.SrcPort)
buf.WriteN(p.DstPort)
buf.WriteN(p.Seq)
buf.WriteN(p.Ack)
flags := uint16(p.DataOff) << 12
if p.Flags&Fin != 0 {
flags |= 0x0001
}
if p.Flags&Syn != 0 {
flags |= 0x0002
}
if p.Flags&Rst != 0 {
flags |= 0x0004
}
if p.Flags&PSH != 0 {
flags |= 0x0008
}
if p.Flags&Ack != 0 {
flags |= 0x0010
}
if p.Flags&Urg != 0 {
flags |= 0x0020
}
if p.Flags&ECE != 0 {
flags |= 0x0040
}
if p.Flags&Cwr != 0 {
flags |= 0x0080
}
if p.Flags&NS != 0 {
flags |= 0x0100
}
buf.WriteN(flags)
buf.WriteN(p.WindowSize)
buf.WriteN(uint16(0x0000))
buf.WriteN(p.Urgent)
for _, opt := range p.Options {
buf.WriteN(opt.Type)
buf.WriteN(opt.Len)
buf.WriteN(opt.Data)
}
if p.csum_seed != 0 {
p.Checksum =
ipv4.CalculateChecksum(buf.LayerBytes(), p.csum_seed)
}
buf.PutUint16N(16, p.Checksum)
/* add padding */
for buf.LayerLen() < int(p.DataOff)*4 {
buf.WriteN(uint8(0x00))
}
return nil
}
func (p *Packet) Pack(buf *packet.Buffer) error {
buf.WriteN(uint8(p.Version<<4 | (p.Class >> 4)))
buf.WriteN(p.Class<<4 | uint8(p.Label>>16))
buf.WriteN(uint16(p.Label))
buf.WriteN(p.Length)
buf.WriteN(p.NextHdr)
buf.WriteN(p.HopLimit)
buf.Write(p.SrcAddr.To16())
buf.Write(p.DstAddr.To16())
return nil
}
func (p *Packet) Pack(buf *packet.Buffer) error {
buf.WriteN(byte(p.Type))
buf.WriteN(byte(p.Code))
buf.WriteN(uint16(0x0000))
buf.WriteN(p.Id)
buf.WriteN(p.Seq)
p.Checksum = ipv4.CalculateChecksum(buf.LayerBytes(), 0)
buf.PutUint16N(2, p.Checksum)
return nil
}
