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tailscale/ipn
Mihai Parparita 9cb332f0e2 sockstats: instrument networking code paths
Uses the hooks added by tailscale/go#45 to instrument the reads and
writes on the major code paths that do network I/O in the client. The
convention is to use "<package>.<type>:<label>" as the annotation for
the responsible code path.

Enabled on iOS, macOS and Android only, since mobile platforms are the
ones we're most interested in, and we are less sensitive to any
throughput degradation due to the per-I/O callback overhead (macOS is
also enabled for ease of testing during development).

For now just exposed as counters on a /v0/sockstats PeerAPI endpoint.

We also keep track of the current interface so that we can break out
the stats by interface.

Updates tailscale/corp#9230
Updates #3363

Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2 years ago
..
ipnauth all: update copyright and license headers 2 years ago
ipnlocal sockstats: instrument networking code paths 2 years ago
ipnserver all: update copyright and license headers 2 years ago
ipnstate ipn/ipnstate: update field docs on PeerStatus. 2 years ago
localapi tsnet: add a LocalAPI listener on loopback, with basic auth 2 years ago
policy all: update copyright and license headers 2 years ago
store all: use Go 1.20's bytes.Clone 2 years ago
backend.go all: update copyright and license headers 2 years ago
doc.go all: update copyright and license headers 2 years ago
fake_test.go all: update copyright and license headers 2 years ago
ipn_clone.go all: update copyright and license headers 2 years ago
ipn_view.go all: update copyright and license headers 2 years ago
prefs.go all: update copyright and license headers 2 years ago
prefs_test.go all: update copyright and license headers 2 years ago
serve.go all: update copyright and license headers 2 years ago
store.go ipn: remove unused NLKeyStateKey constant 2 years ago