eburet-oss/sing-tun-lx
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Improve checksum usages

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This commit is contained in:
世界 2025-08-27 11:03:17 +08:00
parent f9bbb15bfb
commit adc106bcf6
No known key found for this signature in database
GPG key ID: CD109927C34A63C4
9 changed files with 23 additions and 45 deletions
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4
ping/rewriter.go
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@ -59,7 +59,6 @@ func (m *Rewriter) RewritePacket(packet []byte) {
sourceAddr := ipHdr.SourceAddr()
ipHdr.SetSourceAddr(bindAddr)
if ipHdr4, isIPv4 := ipHdr.(header.IPv4); isIPv4 {
ipHdr4.SetChecksum(0)
ipHdr4.SetChecksum(^ipHdr4.CalculateChecksum())
}
switch ipHdr.TransportProtocol() {
@ -71,7 +70,6 @@ func (m *Rewriter) RewritePacket(packet []byte) {
m.logger.TraceContext(m.ctx, "write ICMPv4 echo request from ", ipHdr.SourceAddr(), " to ", ipHdr.DestinationAddr(), " id ", icmpHdr.Ident(), " seq ", icmpHdr.Sequence())
case header.ICMPv6ProtocolNumber:
icmpHdr := header.ICMPv6(ipHdr.Payload())
icmpHdr.SetChecksum(0)
icmpHdr.SetChecksum(header.ICMPv6Checksum(header.ICMPv6ChecksumParams{
Header: icmpHdr,
Src: ipHdr.SourceAddressSlice(),
@ -133,7 +131,6 @@ func (m *Rewriter) WriteBack(packet []byte) (bool, error) {
}
ipHdr.SetDestinationAddr(routeSession.Source)
if ipHdr4, isIPv4 := ipHdr.(header.IPv4); isIPv4 {
ipHdr4.SetChecksum(0)
ipHdr4.SetChecksum(^ipHdr4.CalculateChecksum())
}
switch ipHdr.TransportProtocol() {
@ -142,7 +139,6 @@ func (m *Rewriter) WriteBack(packet []byte) (bool, error) {
m.logger.TraceContext(m.ctx, "read ICMPv4 echo reply from ", ipHdr.SourceAddr(), " to ", ipHdr.DestinationAddr(), " id ", icmpHdr.Ident(), " seq ", icmpHdr.Sequence())
case header.ICMPv6ProtocolNumber:
icmpHdr := header.ICMPv6(ipHdr.Payload())
icmpHdr.SetChecksum(0)
icmpHdr.SetChecksum(header.ICMPv6Checksum(header.ICMPv6ChecksumParams{
Header: icmpHdr,
Src: ipHdr.SourceAddressSlice(),