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net/packet, wgengine/{filter,tstun}: add TSMP ping

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Fixes #1467

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2021-03-23 15:16:15 -07:00
committed by Brad Fitzpatrick
parent 4b77eca2de
commit 2384c112c9
13 changed files with 247 additions and 18 deletions
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13
net/packet/packet.go
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@ -343,6 +343,19 @@ func (q *Parsed) IP4Header() IP4Header {
}
}
func (q *Parsed) IP6Header() IP6Header {
if q.IPVersion != 6 {
panic("IP6Header called on non-IPv6 Parsed")
}
ipid := (binary.BigEndian.Uint32(q.b[:4]) << 12) >> 12
return IP6Header{
IPID: ipid,
IPProto: q.IPProto,
Src: q.Src.IP,
Dst: q.Dst.IP,
}
}
func (q *Parsed) ICMP4Header() ICMP4Header {
if q.IPVersion != 4 {
panic("IP4Header called on non-IPv4 Parsed")