Commit Graph

10 Commits (49bae7fd5cbf5dc82bb99a06c9e4c7586d60f730)

Author SHA1 Message Date
Brad Fitzpatrick a12aad6b47 all: convert more code to use net/netip directly
perl -i -npe 's,netaddr.IPPrefixFrom,netip.PrefixFrom,' $(git grep -l -F netaddr.)
    perl -i -npe 's,netaddr.IPPortFrom,netip.AddrPortFrom,' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPPrefix,netip.Prefix,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPPort,netip.AddrPort,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IP\b,netip.Addr,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPv6Raw\b,netip.AddrFrom16,g' $(git grep -l -F netaddr. )
    goimports -w .

Then delete some stuff from the net/netaddr shim package which is no
longer neeed.

Updates #5162

Change-Id: Ia7a86893fe21c7e3ee1ec823e8aba288d4566cd8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 7eaf5e509f net/netaddr: start migrating to net/netip via new netaddr adapter package
Updates #5162

Change-Id: Id7bdec303b25471f69d542f8ce43805328d56c12
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2 years ago
Brad Fitzpatrick 01b90df2fa net/packet, wgengine/filter: support SCTP
Add proto to flowtrack.Tuple.

Add types/ipproto leaf package to break a cycle.

Server-side ACL work remains.

Updates #1516

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
4 years ago
David Anderson cb96b14bf4 net/packet: remove the custom IP4/IP6 types in favor of netaddr.IP.
Upstream netaddr has a change that makes it alloc-free, so it's safe to
use in hot codepaths. This gets rid of one of the many IP types in our
codebase.

Performance is currently worse across the board. This is likely due in
part to netaddr.IP being a larger value type (4b -> 24b for IPv4,
16b -> 24b for IPv6), and in other part due to missing low-hanging fruit
optimizations in netaddr. However, the regression is less bad than
it looks at first glance, because we'd micro-optimized packet.IP* in
the past few weeks. This change drops us back to roughly where we
were at the 1.2 release, but with the benefit of a significant
code and architectural simplification.

name                   old time/op    new time/op    delta
pkg:tailscale.com/net/packet goos:linux goarch:amd64
Decode/tcp4-8            12.2ns ± 5%    29.7ns ± 2%  +142.32%  (p=0.008 n=5+5)
Decode/tcp6-8            12.6ns ± 3%    65.1ns ± 2%  +418.47%  (p=0.008 n=5+5)
Decode/udp4-8            11.8ns ± 3%    30.5ns ± 2%  +157.94%  (p=0.008 n=5+5)
Decode/udp6-8            27.1ns ± 1%    65.7ns ± 2%  +142.36%  (p=0.016 n=4+5)
Decode/icmp4-8           24.6ns ± 2%    30.5ns ± 2%   +23.65%  (p=0.016 n=4+5)
Decode/icmp6-8           22.9ns ±51%    65.5ns ± 2%  +186.19%  (p=0.008 n=5+5)
Decode/igmp-8            18.1ns ±44%    30.2ns ± 1%   +66.89%  (p=0.008 n=5+5)
Decode/unknown-8         20.8ns ± 1%    10.6ns ± 9%   -49.11%  (p=0.016 n=4+5)
pkg:tailscale.com/wgengine/filter goos:linux goarch:amd64
Filter/icmp4-8           30.5ns ± 1%    77.9ns ± 3%  +155.01%  (p=0.008 n=5+5)
Filter/tcp4_syn_in-8     43.7ns ± 3%   123.0ns ± 3%  +181.72%  (p=0.008 n=5+5)
Filter/tcp4_syn_out-8    24.5ns ± 2%    45.7ns ± 6%   +86.22%  (p=0.008 n=5+5)
Filter/udp4_in-8         64.8ns ± 1%   210.0ns ± 2%  +223.87%  (p=0.008 n=5+5)
Filter/udp4_out-8         119ns ± 0%     278ns ± 0%  +133.78%  (p=0.016 n=4+5)
Filter/icmp6-8           40.3ns ± 2%   204.4ns ± 4%  +407.70%  (p=0.008 n=5+5)
Filter/tcp6_syn_in-8     35.3ns ± 3%   199.2ns ± 2%  +464.95%  (p=0.008 n=5+5)
Filter/tcp6_syn_out-8    32.8ns ± 2%    81.0ns ± 2%  +147.10%  (p=0.008 n=5+5)
Filter/udp6_in-8          106ns ± 2%     290ns ± 2%  +174.48%  (p=0.008 n=5+5)
Filter/udp6_out-8         184ns ± 2%     314ns ± 3%   +70.43%  (p=0.016 n=4+5)
pkg:tailscale.com/wgengine/tstun goos:linux goarch:amd64
Write-8                  9.02ns ± 3%    8.92ns ± 1%      ~     (p=0.421 n=5+5)

name                   old alloc/op   new alloc/op   delta
pkg:tailscale.com/net/packet goos:linux goarch:amd64
Decode/tcp4-8             0.00B          0.00B           ~     (all equal)
Decode/tcp6-8             0.00B          0.00B           ~     (all equal)
Decode/udp4-8             0.00B          0.00B           ~     (all equal)
Decode/udp6-8             0.00B          0.00B           ~     (all equal)
Decode/icmp4-8            0.00B          0.00B           ~     (all equal)
Decode/icmp6-8            0.00B          0.00B           ~     (all equal)
Decode/igmp-8             0.00B          0.00B           ~     (all equal)
Decode/unknown-8          0.00B          0.00B           ~     (all equal)
pkg:tailscale.com/wgengine/filter goos:linux goarch:amd64
Filter/icmp4-8            0.00B          0.00B           ~     (all equal)
Filter/tcp4_syn_in-8      0.00B          0.00B           ~     (all equal)
Filter/tcp4_syn_out-8     0.00B          0.00B           ~     (all equal)
Filter/udp4_in-8          0.00B          0.00B           ~     (all equal)
Filter/udp4_out-8         16.0B ± 0%     64.0B ± 0%  +300.00%  (p=0.008 n=5+5)
Filter/icmp6-8            0.00B          0.00B           ~     (all equal)
Filter/tcp6_syn_in-8      0.00B          0.00B           ~     (all equal)
Filter/tcp6_syn_out-8     0.00B          0.00B           ~     (all equal)
Filter/udp6_in-8          0.00B          0.00B           ~     (all equal)
Filter/udp6_out-8         48.0B ± 0%     64.0B ± 0%   +33.33%  (p=0.008 n=5+5)

name                   old allocs/op  new allocs/op  delta
pkg:tailscale.com/net/packet goos:linux goarch:amd64
Decode/tcp4-8              0.00           0.00           ~     (all equal)
Decode/tcp6-8              0.00           0.00           ~     (all equal)
Decode/udp4-8              0.00           0.00           ~     (all equal)
Decode/udp6-8              0.00           0.00           ~     (all equal)
Decode/icmp4-8             0.00           0.00           ~     (all equal)
Decode/icmp6-8             0.00           0.00           ~     (all equal)
Decode/igmp-8              0.00           0.00           ~     (all equal)
Decode/unknown-8           0.00           0.00           ~     (all equal)
pkg:tailscale.com/wgengine/filter goos:linux goarch:amd64
Filter/icmp4-8             0.00           0.00           ~     (all equal)
Filter/tcp4_syn_in-8       0.00           0.00           ~     (all equal)
Filter/tcp4_syn_out-8      0.00           0.00           ~     (all equal)
Filter/udp4_in-8           0.00           0.00           ~     (all equal)
Filter/udp4_out-8          1.00 ± 0%      1.00 ± 0%      ~     (all equal)
Filter/icmp6-8             0.00           0.00           ~     (all equal)
Filter/tcp6_syn_in-8       0.00           0.00           ~     (all equal)
Filter/tcp6_syn_out-8      0.00           0.00           ~     (all equal)
Filter/udp6_in-8           0.00           0.00           ~     (all equal)
Filter/udp6_out-8          1.00 ± 0%      1.00 ± 0%      ~     (all equal)

Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 3c508a58cc wgengine/filter: don't filter GCP DNS.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson a38e28da07 net/packet: documentation pass.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson c2cc3acbaf net/packet: remove NewIP, offer only a netaddr constructor.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago
David Anderson 22bf48f37c net/packet: remove {get,put}{16,32} indirection to encoding/binary.
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>
4 years ago
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>
4 years ago
David Anderson 427bf2134f net/packet: rename from wgengine/packet.
Signed-off-by: David Anderson <danderson@tailscale.com>
4 years ago