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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>		3 days ago
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bench	types/netmap: remove PrivateKey from NetworkMap	1 month ago
filter	wgengine/filter: add check for unknown proto	11 months ago
magicsock	net/{packet,tstun},wgengine: update disco key when receiving via TSMP (#18158)	1 week ago
netlog	wgengine/netlog: strip dot suffix from node name (#17954)	1 month ago
netstack	all: rename variables with lowercase-l/uppercase-I	1 month ago
router	all: rename variables with lowercase-l/uppercase-I	1 month ago
wgcfg	types/netmap: remove PrivateKey from NetworkMap	1 month ago
wgint	wgengine{,/wgint}: add wgint.Peer wrapper type, add to wgengine.Engine	2 years ago
wglog	all: use Go 1.22 range-over-int	2 years ago
winnet	all: add test for package comments, fix, add comments as needed	1 year ago
mem_ios.go	all: update copyright and license headers	3 years ago
pendopen.go	wgengine: stop importing flowtrack when unused	3 months ago
pendopen_omit.go	wgengine: stop importing flowtrack when unused	3 months ago
userspace.go	net/netmon, wgengine/userspace: purge ChangeDelta.Major and address TODOs (#17823)	3 days ago
userspace_ext_test.go	health,ipn/ipnlocal: introduce eventbus in heath.Tracker (#17085)	3 months ago
userspace_test.go	net/tstun: add TSMPDiscoAdvertisement to TSMPPing (#17995)	4 weeks ago
watchdog.go	ipn/ipnlocal: remove all the weird locking (LockedOnEntry, UnlockEarly, etc)	1 month ago
watchdog_omit.go	ipn/ipnlocal, engine: avoid runtime/pprof with two usages of ts_omit_debug	3 months ago
watchdog_test.go	health,ipn/ipnlocal: introduce eventbus in heath.Tracker (#17085)	3 months ago
wgengine.go	ipn/ipnlocal: remove all the weird locking (LockedOnEntry, UnlockEarly, etc)	1 month ago