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all: depend on zstd unconditionally, remove plumbing to make it optional

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All platforms use it at this point, including iOS which was the
original hold out for memory reasons. No more reason to make it
optional.

Updates #9332

Change-Id: I743fbc2f370921a852fbcebf4eb9821e2bdd3086
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2023-09-10 07:24:51 -07:00
committed by Brad Fitzpatrick
parent f12c71e71c
commit 9a86aa5732
11 changed files with 14 additions and 51 deletions
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18
ipn/ipnlocal/local.go
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@@ -153,10 +153,9 @@ type LocalBackend struct {
portpoll *portlist.Poller // may be nil
portpollOnce sync.Once // guards starting readPoller
gotPortPollRes chan struct{} // closed upon first readPoller result
newDecompressor func() (controlclient.Decompressor, error)
varRoot string // or empty if SetVarRoot never called
logFlushFunc func() // or nil if SetLogFlusher wasn't called
em *expiryManager // non-nil
varRoot string // or empty if SetVarRoot never called
logFlushFunc func() // or nil if SetLogFlusher wasn't called
em *expiryManager // non-nil
sshAtomicBool atomic.Bool
shutdownCalled bool // if Shutdown has been called
debugSink *capture.Sink
@@ -898,16 +897,6 @@ func (b *LocalBackend) peerCapsLocked(src netip.Addr) tailcfg.PeerCapMap {
return nil
}
// SetDecompressor sets a decompression function, which must be a zstd
// reader.
//
// This exists because the iOS/Mac NetworkExtension is very resource
// constrained, and the zstd package is too heavy to fit in the
// constrained RSS limit.
func (b *LocalBackend) SetDecompressor(fn func() (controlclient.Decompressor, error)) {
b.newDecompressor = fn
}
// SetControlClientStatus is the callback invoked by the control client whenever it posts a new status.
// Among other things, this is where we update the netmap, packet filters, DNS and DERP maps.
func (b *LocalBackend) SetControlClientStatus(c controlclient.Client, st controlclient.Status) {
@@ -1460,7 +1449,6 @@ func (b *LocalBackend) Start(opts ipn.Options) error {
ServerURL: serverURL,
AuthKey: opts.AuthKey,
Hostinfo: hostinfo,
NewDecompressor: b.newDecompressor,
HTTPTestClient: httpTestClient,
DiscoPublicKey: discoPublic,
DebugFlags: debugFlags,