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55b1221db2
The packet filter still rejects all IPv6, but decodes enough from v6 packets to do something smarter in a followup. name time/op Decode/tcp4-8 28.8ns ± 2% Decode/tcp6-8 20.6ns ± 1% Decode/udp4-8 28.2ns ± 1% Decode/udp6-8 20.0ns ± 6% Decode/icmp4-8 21.7ns ± 2% Decode/icmp6-8 14.1ns ± 2% Decode/unknown-8 9.43ns ± 2% Signed-off-by: David Anderson <danderson@tailscale.com>
31 lines
563 B
Go
31 lines
563 B
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package packet
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import (
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"fmt"
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"inet.af/netaddr"
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)
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type IP6 [16]byte
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func IP6FromNetaddr(ip netaddr.IP) IP6 {
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if !ip.Is6() {
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panic(fmt.Sprintf("IP6FromNetaddr called with non-v6 addr %q", ip))
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}
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return IP6(ip.As16())
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}
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func (ip IP6) Netaddr() netaddr.IP {
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return netaddr.IPFrom16(ip)
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}
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func (ip IP6) String() string {
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return ip.Netaddr().String()
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}
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const ip6HeaderLength = 40
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