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remove legacy remnants and move ip,udp,ethernet logic into subpackages

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This commit is contained in:
soypat
2025-02-20 16:00:55 -03:00
parent 0606a04f45
commit f86bb6f01a
22 changed files with 590 additions and 1885 deletions
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ipv4/frame.go
+13 -2
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@@ -7,6 +7,17 @@ import (
"github.com/soypat/lneto/lneto2"
)
// NewIPv4Frame returns a new IPv4Frame with data set to buf.
// An error is returned if the buffer size is smaller than 20.
// Users should still call [IPv4Frame.ValidateSize] before working
// with payload/options of frames to avoid panics.
func NewFrame(buf []byte) (Frame, error) {
if len(buf) < sizeHeader {
return Frame{buf: nil}, errors.New("ipv4: short buffer")
}
return Frame{buf: buf}, nil
}
// Frame encapsulates the raw data of an IPv4 packet
// and provides methods for manipulating, validating and
// retreiving fields and payload data. See [RFC791].
@@ -123,14 +134,14 @@ func (ifrm Frame) CalculateHeaderCRC() uint16 {
return crc.Sum16()
}
func (ifrm Frame) crcWriteTCPPseudo(crc *lneto2.CRC791) {
func (ifrm Frame) CRCWriteTCPPseudo(crc *lneto2.CRC791) {
crc.Write(ifrm.SourceAddr()[:])
crc.Write(ifrm.DestinationAddr()[:])
crc.AddUint16(ifrm.TotalLength() - 4*uint16(ifrm.ihl()))
crc.AddUint16(uint16(ifrm.Protocol()))
}
func (ifrm Frame) crcWriteUDPPseudo(crc *lneto2.CRC791) {
func (ifrm Frame) CRCWriteUDPPseudo(crc *lneto2.CRC791) {
crc.Write(ifrm.SourceAddr()[:])
crc.Write(ifrm.DestinationAddr()[:])
crc.AddUint16(uint16(ifrm.Protocol()))