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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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fake.go	cmd/tailscaled,net/tstun: fix data race on start-up in TUN mode	11 months ago
ifstatus_noop.go	all: update copyright and license headers	2 years ago
ifstatus_windows.go	all: update copyright and license headers	2 years ago
linkattrs_linux.go	all: update copyright and license headers	2 years ago
linkattrs_notlinux.go	all: update copyright and license headers	2 years ago
mtu.go	disco,net/tstun,wgengine/magicsock: probe peer MTU	12 months ago
mtu_test.go	disco,net/tstun,wgengine/magicsock: probe peer MTU	12 months ago
tap_linux.go	go.mod,*: bump gvisor	12 months ago
tap_unsupported.go	all: update copyright and license headers	2 years ago
tstun_stub.go	cmd/tailscaled, net/tstun: build for aix/ppc64	5 months ago
tun.go	net/tstun: implement env var for disabling UDP GRO on Linux (#11924)	5 months ago
tun_features_linux.go	net/tstun: implement env var for disabling UDP GRO on Linux (#11924)	5 months ago
tun_features_notlinux.go	net/tstun: implement env var for disabling UDP GRO on Linux (#11924)	5 months ago
tun_linux.go	all: update copyright and license headers	2 years ago
tun_macos.go	all: update copyright and license headers	2 years ago
tun_notwindows.go	all: update copyright and license headers	2 years ago
tun_windows.go	all: update copyright and license headers	2 years ago
wrap.go	go.mod,net/tstun,wgengine/netstack: implement gVisor TCP GSO for Linux (#12869)	2 months ago
wrap_test.go	wgengine/filter: support FilterRules matching on srcIP node caps [capver 100]	3 months ago