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correctly set ethertype, at least for single-IP networks

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This commit is contained in:
JackDoan
2025-11-14 11:38:34 -06:00
parent a39d3c79b2
commit 3443d3ffd3
2 changed files with 14 additions and 5 deletions
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11
packet/outpacket.go
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@@ -39,7 +39,7 @@ func (pkt *OutPacket) Reset() {
pkt.wasSegmented = false
}
func (pkt *OutPacket) UseSegment(segID uint16, seg []byte) int {
func (pkt *OutPacket) UseSegment(segID uint16, seg []byte, isV6 bool) int {
pkt.Valid = true
pkt.SegmentIDs = append(pkt.SegmentIDs, segID)
pkt.Segments = append(pkt.Segments, seg) //todo do we need this?
@@ -56,8 +56,13 @@ func (pkt *OutPacket) UseSegment(segID uint16, seg []byte) int {
hdr := seg[0 : virtio.NetHdrSize+14]
_ = vhdr.Encode(hdr)
hdr[virtio.NetHdrSize+14-2] = 0x86
hdr[virtio.NetHdrSize+14-1] = 0xdd //todo ipv6 ethertype
if isV6 {
hdr[virtio.NetHdrSize+14-2] = 0x86
hdr[virtio.NetHdrSize+14-1] = 0xdd
} else {
hdr[virtio.NetHdrSize+14-2] = 0x08
hdr[virtio.NetHdrSize+14-1] = 0x00
}
pkt.SegmentHeaders = append(pkt.SegmentHeaders, hdr)
pkt.SegmentPayloads = append(pkt.SegmentPayloads, seg[virtio.NetHdrSize+14:])