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Jordan Whited 7bc2ddaedc go.mod,net/tstun,wgengine/netstack: implement gVisor TCP GSO for Linux (#12869) ... This commit implements TCP GSO for packets being read from gVisor on Linux. Windows support will follow later. The wireguard-go dependency is updated in order to make use of newly exported GSO logic from its tun package. A new gVisor stack.LinkEndpoint implementation has been established (linkEndpoint) that is loosely modeled after its predecessor (channel.Endpoint). This new implementation supports GSO of monster TCP segments up to 64K in size, whereas channel.Endpoint only supports up to 32K. linkEndpoint will also be required for GRO, which will be implemented in a follow-on commit. TCP throughput from gVisor, i.e. TUN read direction, is dramatically improved as a result of this commit. Benchmarks show substantial improvement through a wide range of RTT and loss conditions, sometimes as high as 5x. The iperf3 results below demonstrate the effect of this commit between two Linux computers with i5-12400 CPUs. There is roughly ~13us of round trip latency between them. The first result is from commit 57856fc without TCP GSO. Starting Test: protocol: TCP, 1 streams, 131072 byte blocks - - - - - - - - - - - - - - - - - - - - - - - - - Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 2.51 GBytes 2.15 Gbits/sec 154 sender [ 5] 0.00-10.00 sec 2.49 GBytes 2.14 Gbits/sec receiver The second result is from this commit with TCP GSO. Starting Test: protocol: TCP, 1 streams, 131072 byte blocks - - - - - - - - - - - - - - - - - - - - - - - - - Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 12.6 GBytes 10.8 Gbits/sec 6 sender [ 5] 0.00-10.00 sec 12.6 GBytes 10.8 Gbits/sec receiver Updates #6816 Signed-off-by: Jordan Whited <jordan@tailscale.com>		2 months ago
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bench	ipn/ipnlocal, all: plumb health trackers in tests	5 months ago
capture	various: add golangci-lint, fix issues (#7905)	1 year ago
filter	wgengine/filter: support FilterRules matching on srcIP node caps [capver 100]	3 months ago
magicsock	ipn,wgengine/magicsock: allow setting static node endpoints via tailscaled configfile (#12882)	2 months ago
netlog	wgengine: add exit destination logging enable for wgengine logger (#11952)	5 months ago
netstack	go.mod,net/tstun,wgengine/netstack: implement gVisor TCP GSO for Linux (#12869)	2 months ago
router	wgengine/router: use quad-100 as the nexthop on Windows	2 months ago
wgcfg	ipn,wgengine: remove vestigial Prefs.AllowSingleHosts	4 months ago
wgint	wgengine{,/wgint}: add wgint.Peer wrapper type, add to wgengine.Engine	7 months ago
wglog	all: use Go 1.22 range-over-int	5 months ago
winnet	all: add test for package comments, fix, add comments as needed	2 months ago
mem_ios.go	all: update copyright and license headers	2 years ago
pendopen.go	net/flowtrack: optimize Tuple type for use as map key	3 months ago
userspace.go	net/ipset, wgengine/filter/filtertype: add split-out packages	3 months ago
userspace_ext_test.go	ipn/ipnlocal, all: plumb health trackers in tests	5 months ago
userspace_test.go	ipn/ipnlocal, all: plumb health trackers in tests	5 months ago
watchdog.go	ipn/ipnlocal,net/tstun,wgengine: create and plumb jailed packet filter	5 months ago
watchdog_js.go	all: update copyright and license headers	2 years ago
watchdog_test.go	ipn/ipnlocal, all: plumb health trackers in tests	5 months ago
wgengine.go	all: add test for package comments, fix, add comments as needed	2 months ago