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Jonathan Nobels 3e89068792 net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823) ... updates tailscale/corp#33891 Addresses several older the TODO's in netmon. This removes the Major flag precomputes the ChangeDelta state, rather than making consumers of ChangeDeltas sort that out themselves. We're also seeing a lot of ChangeDelta's being flagged as "Major" when they are not interesting, triggering rebinds in wgengine that are not needed. This cleans that up and adds a host of additional tests. The dependencies are cleaned, notably removing dependency on netmon itself for calculating what is interesting, and what is not. This includes letting individual platforms set a bespoke global "IsInterestingInterface" function. This is only used on Darwin. RebindRequired now roughly follows how "Major" was historically calculated but includes some additional checks for various uninteresting events such as changes in interface addresses that shouldn't trigger a rebind. This significantly reduces thrashing (by roughly half on Darwin clients which switching between nics). The individual values that we roll into RebindRequired are also exposed so that components consuming netmap.ChangeDelta can ask more targeted questions. Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>		4 days ago
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defaultroute_bsd.go	net/netmon: swap to swift-derived defaultRoute on macos (#11936)	2 years ago
defaultroute_darwin.go	net/{netns, netmon}: use LastKnownDefaultInterface if set and check for utun (#16873)	4 months ago
interfaces_android.go	types/result, util/lineiter: add package for a result type, use it	1 year ago
interfaces_bsd.go	net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon	2 years ago
interfaces_darwin.go	syncs: add Mutex/RWMutex alias/wrappers for future mutex debugging	1 month ago
interfaces_darwin_test.go	net/{netns, netmon}: use LastKnownDefaultInterface if set and check for utun (#16873)	4 months ago
interfaces_default_route_test.go	net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon	2 years ago
interfaces_defaultrouteif_todo.go	net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon	2 years ago
interfaces_freebsd.go	net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon	2 years ago
interfaces_linux.go	feature/featuretags: add features for c2n, peerapi, advertise/use routes/exit nodes	3 months ago
interfaces_linux_test.go	net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon	2 years ago
interfaces_test.go	net/netmon: use Monitor's tsIfName if set by SetTailscaleInterfaceName	9 months ago
interfaces_windows.go	feature, net/tshttpproxy: pull out support for using proxies as a feature	3 months ago
interfaces_windows_test.go	net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon	2 years ago
loghelper.go	net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823)	4 days ago
loghelper_test.go	net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823)	4 days ago
netmon.go	net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823)	4 days ago
netmon_darwin.go	net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823)	4 days ago
netmon_darwin_test.go	all: move network monitoring from wgengine/monitor to net/netmon	3 years ago
netmon_freebsd.go	net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823)	4 days ago
netmon_linux.go	net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823)	4 days ago
netmon_linux_test.go	types/result, util/lineiter: add package for a result type, use it	1 year ago
netmon_polling.go	net/netmon: publish events to event bus	8 months ago
netmon_test.go	net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823)	4 days ago
netmon_windows.go	net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823)	4 days ago
polling.go	net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823)	4 days ago
state.go	net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823)	4 days ago