eburet-oss/sing-tun-lx
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Minor fixes

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世界 2026-07-07 15:36:21 +08:00
parent 14c8f75f7a
commit c17af6ee8c
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GPG key ID: CD109927C34A63C4
13 changed files with 357 additions and 181 deletions
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8
tun_offload.go
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@ -156,6 +156,7 @@ func GSOSplit(in []byte, options GSOOptions, outBufs [][]byte, sizes []int, outO
} else {
protocol = ipProtoUDP
}
pseudoSumBase := header.PseudoHeaderChecksum(tcpip.TransportProtocolNumber(protocol), in[srcAddrOffset:srcAddrOffset+addrLen], in[srcAddrOffset+addrLen:srcAddrOffset+addrLen*2], 0)
nextSegmentDataAt := int(options.HdrLen)
i := 0
for ; nextSegmentDataAt < len(in); i++ {
@ -168,7 +169,7 @@ func GSOSplit(in []byte, options GSOOptions, outBufs [][]byte, sizes []int, outO
sizes[i] = totalLen
out := outBufs[i][outOffset:]
copy(out, in[:iphLen])
copy(out[:options.HdrLen], in[:options.HdrLen])
if ipVersion == 4 {
// For IPv4 we are responsible for incrementing the ID field,
// updating the total len field, and recalculating the header
@ -187,9 +188,6 @@ func GSOSplit(in []byte, options GSOOptions, outBufs [][]byte, sizes []int, outO
binary.BigEndian.PutUint16(out[4:], uint16(totalLen-iphLen))
}
// copy transport header
copy(out[options.CsumStart:options.HdrLen], in[options.CsumStart:options.HdrLen])
if protocol == ipProtoTCP {
// set TCP seq and adjust TCP flags
tcpSeq := firstTCPSeqNum + uint32(options.GSOSize*uint16(i))
@ -211,7 +209,7 @@ func GSOSplit(in []byte, options GSOOptions, outBufs [][]byte, sizes []int, outO
out[transportCsumAt], out[transportCsumAt+1] = 0, 0 // clear tcp/udp checksum
transportHeaderLen := int(options.HdrLen - options.CsumStart)
lenForPseudo := uint16(transportHeaderLen + segmentDataLen)
transportCSum := header.PseudoHeaderChecksum(tcpip.TransportProtocolNumber(protocol), in[srcAddrOffset:srcAddrOffset+addrLen], in[srcAddrOffset+addrLen:srcAddrOffset+addrLen*2], lenForPseudo)
transportCSum := checksum.Combine(pseudoSumBase, lenForPseudo)
transportCSum = ^checksum.Checksum(out[options.CsumStart:totalLen], transportCSum)
binary.BigEndian.PutUint16(out[options.CsumStart+options.CsumOffset:], transportCSum)