tailscale/wgengine/magicsock/debugknobs.go, branch knyar/netmapdiff2

tailcfg,wgengine/magicsock: set peer relay CapVer (#16531)

2025-07-15T19:29:07Z

Updates tailscale/corp#27502 Updates tailscale/corp#30051 Signed-off-by: Jordan Whited

wgengine/magicsock: add envknob to toggle UDP relay feature (#16396)

2025-06-27T01:39:47Z

Updates tailscale/corp#27502 Signed-off-by: Jordan Whited

wgengine/magicsock: allow a CSV list for pretendpoint

2024-07-10T16:57:28Z

Load Balancers often have more than one ingress IP, so allowing us to add multiple means we can offer multiple options. Updates #12578 Change-Id: I4aa49a698d457627d2f7011796d665c67d4c7952 Signed-off-by: Lee Briggs

wgengine/magicsock: add debug envknob for injecting an endpoint

2024-07-08T14:59:40Z

For testing. Lee wants to play with 'AWS Global Accelerator Custom Routing with Amazon Elastic Kubernetes Service'. If this works well enough, we can promote it. Updates #12578 Change-Id: I5018347ed46c15c9709910717d27305d0aedf8f4 Signed-off-by: Brad Fitzpatrick

control/controlknobs,tailcfg,wgengine/magicsock: remove DRPO shutoff switch

2024-07-07T02:50:53Z

The DERP Return Path Optimization (DRPO) is over four years old (and on by default for over two) and we haven't had problems, so time to remove the emergency shutoff code (controlknob) which we've never used. The controlknobs are only meant for new features, to mitigate risk. But we don't want to keep them forever, as they kinda pollute the code. Updates #150 Change-Id: If021bc8fd1b51006d8bddd1ffab639bb1abb0ad1 Signed-off-by: Brad Fitzpatrick

all: cleanup unused code, part 2 (#10670)

2023-12-22T01:40:03Z

And enable U1000 check in staticcheck. Updates #cleanup Signed-off-by: Andrew Lytvynov

wgengine/magicsock: replace CanPMTUD() with ShouldPMTUD()

2023-09-21T11:17:12Z

Replace CanPMTUD() with ShouldPMTUD() to check if peer path MTU discovery should be enabled, in preparation for adding support for enabling/disabling peer MTU dynamically. Updated #311 Signed-off-by: Val

wgengine/magicsock: rename debugPMTUD() to debugEnablePMTUD()

2023-09-21T11:17:12Z

Make the debugknob variable name for enabling peer path MTU discovery match the env variable name. Updates #311 Signed-off-by: Val

wgengine/magicsock: make peerMap also keyed by NodeID

2023-09-11T19:43:47Z

In prep for incremental netmap update plumbing (#1909), make peerMap also keyed by NodeID, as all the netmap node mutations passed around later will be keyed by NodeID. In the process, also: * add envknob.InDevMode, as a signal that we can panic more aggressively in unexpected cases. * pull two moderately large blocks of code in Conn.SetNetworkMap out into their own methods * convert a few more sets from maps to set.Set Updates #1909 Change-Id: I7acdd64452ba58e9d554140ee7a8760f9043f961 Signed-off-by: Brad Fitzpatrick

magicsock: set the don't fragment sockopt (#8715)

2023-08-11T08:34:51Z

This sets the Don't Fragment flag, for now behind the TS_DEBUG_ENABLE_PMTUD envknob. Updates #311. Signed-off-by: Val Signed-off-by: salman