David Anderson
9ef39af2f2
net/packet: fix panic on invalid IHL field.
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Signed-off-by: David Anderson <danderson@tailscale.com>
2020-11-10 20:23:54 -08:00
David Anderson
22bf48f37c
net/packet: remove {get,put}{16,32} indirection to encoding/binary.
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name old time/op new time/op delta
Decode/tcp4-8 28.8ns ± 2% 13.1ns ± 4% -54.44% (p=0.008 n=5+5)
Decode/tcp6-8 20.6ns ± 1% 12.6ns ± 2% -38.72% (p=0.008 n=5+5)
Decode/udp4-8 28.2ns ± 1% 12.1ns ± 4% -57.01% (p=0.008 n=5+5)
Decode/udp6-8 20.0ns ± 6% 12.1ns ± 2% -39.38% (p=0.008 n=5+5)
Decode/icmp4-8 21.7ns ± 2% 11.5ns ± 1% -47.01% (p=0.008 n=5+5)
Decode/icmp6-8 14.1ns ± 2% 11.8ns ± 4% -16.60% (p=0.008 n=5+5)
Decode/unknown-8 9.43ns ± 2% 9.30ns ± 3% ~ (p=0.222 n=5+5)
Signed-off-by: David Anderson <danderson@tailscale.com>
2020-11-10 20:23:54 -08:00
David Anderson
55b1221db2
net/packet: support full IPv6 decoding.
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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
David Anderson
89894c6930
net/packet: add IPv6 source and destination IPs to Parsed.
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Signed-off-by: David Anderson <danderson@tailscale.com>
2020-11-10 20:23:54 -08:00
David Anderson
6e52633c53
net/packet: record allocations in benchmark.
2020-11-10 02:19:55 -08:00
David Anderson
093431f5dd
net/packet: s/ParsedPacket/Parsed/ to avoid package stuttering.
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Signed-off-by: David Anderson <danderson@tailscale.com>
2020-11-09 23:52:54 -08:00
David Anderson
427bf2134f
net/packet: rename from wgengine/packet.
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Signed-off-by: David Anderson <danderson@tailscale.com>
2020-11-09 16:25:24 -08:00
