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net/netns: remove spammy logs for interface binding caps

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fixes tailscale/tailscale#17990

The logging for the netns caps is spammy.  Log only on changes
to the values and don't log Darwin specific stuff on non Darwin
clients.

Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
This commit is contained in:
Jonathan Nobels 2025-11-19 11:59:51 -05:00 committed by Brad Fitzpatrick
parent 7d19813618
commit 682172ca2d
1 changed files with 10 additions and 6 deletions
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16
net/netns/netns.go
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@ -17,6 +17,7 @@ import (
"context"
"net"
"net/netip"
"runtime"
"sync/atomic"
"tailscale.com/net/netknob"
@ -40,8 +41,9 @@ var bindToInterfaceByRoute atomic.Bool
//
// Currently, this only changes the behaviour on macOS and Windows.
func SetBindToInterfaceByRoute(logf logger.Logf, v bool) {
logf("netns: bindToInterfaceByRoute to %v", v)
bindToInterfaceByRoute.Store(v)
if bindToInterfaceByRoute.Swap(v) != v {
logf("netns: bindToInterfaceByRoute changed to %v", v)
}
}
var disableBindConnToInterface atomic.Bool
@ -54,8 +56,9 @@ var disableBindConnToInterface atomic.Bool
// SetDisableBindConnToInterfaceAppleExt which will disable explicit interface
// binding only when tailscaled is running inside a network extension process.
func SetDisableBindConnToInterface(logf logger.Logf, v bool) {
logf("netns: disableBindConnToInterface set to %v", v)
disableBindConnToInterface.Store(v)
if disableBindConnToInterface.Swap(v) != v {
logf("netns: disableBindConnToInterface changed to %v", v)
}
}
var disableBindConnToInterfaceAppleExt atomic.Bool
@ -64,8 +67,9 @@ var disableBindConnToInterfaceAppleExt atomic.Bool
// connections to the default network interface but only on Apple clients where
// tailscaled is running inside a network extension.
func SetDisableBindConnToInterfaceAppleExt(logf logger.Logf, v bool) {
logf("netns: disableBindConnToInterfaceAppleExt set to %v", v)
disableBindConnToInterfaceAppleExt.Store(v)
if runtime.GOOS == "darwin" && disableBindConnToInterfaceAppleExt.Swap(v) != v {
logf("netns: disableBindConnToInterfaceAppleExt changed to %v", v)
}
}
// Listener returns a new net.Listener with its Control hook func