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3 Commits

Author SHA1 Message Date
Brad Fitzpatrick 21741e111b net/packet: add ICMP6Header, like ICMP4Header 
So we can generate IPv6 ping replies.

Change-Id: I79a9a38d8aa242e5dfca4cd15dfaffaea6cb1aee
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-12-09 09:30:10 -08:00
David Anderson a38e28da07 net/packet: documentation pass. 
Signed-off-by: David Anderson <danderson@tailscale.com>
 2020-11-10 22:29:00 -08:00
David Anderson 55b1221db2 net/packet: support full IPv6 decoding. 
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>
 2020-11-10 20:23:54 -08:00