7 Commits (dd952713eee8017d1471f2cd2e2ade7b6eda88d3)

Author	SHA1	Message	Date
Jonathan Nobels	0699f847b9	net/netmon: remove ChangeDelta.Major and start the TODOs ... updates tailscale/corp#33891 We've had some TODO's in netmon for ages related to asking more pointed questions of ChangeDelta. 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 removes the "Major" flag and replaces it with a set of precomputed values that hint at what the ChangeDelta means. The dependencies are cleaned up a bit, 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 was only used on Darwin. RebindRequired roughly flows from 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 to minimize thrashing. 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> wgengine/userspace: skip rebind and restun if all of our interfaces are down updates tailscale/corp#33891 Skip rebind and restun if we have called SetNetworkUp with false. Neither cares about this state and it's just flappy to try to reStun and rebind if there are no usable interfaces available. Signed-off-by: Jonathan Nobels <jonathan@tailscale.com> Add viability flag and fix bug in state	1 week ago
David Anderson	5399fa159a	net/netmon: publish events to event bus ... Updates #15160 Signed-off-by: David Anderson <dave@tailscale.com>	8 months ago
James Tucker	80a100b3cb	net/netmon: add extra panic guard around ParseRIB ... We once again have a report of a panic from ParseRIB. This panic guard should probably remain permanent. Updates #14201 This reverts commit de9d4b2f88. Signed-off-by: James Tucker <james@tailscale.com>	10 months ago
James Tucker	de9d4b2f88	net/netmon: remove extra panic guard around ParseRIB ... This was an extra defense added for #14201 that is no longer required. Fixes #14201 Signed-off-by: James Tucker <james@tailscale.com>	11 months ago
James Tucker	4d33f30f91	net/netmon: improve panic reporting from #14202 ... I was hoping we'd catch an example input quickly, but the reporter had rebooted their machine and it is no longer exhibiting the behavior. As such this code may be sticking around quite a bit longer and we might encounter other errors, so include the panic in the log entry. Updates #14201 Updates #14202 Updates golang/go#70528 Signed-off-by: James Tucker <james@tailscale.com>	1 year ago
James Tucker	f6431185b0	net/netmon: catch ParseRIB panic to gather buffer data ... Updates #14201 Updates golang/go#70528 Signed-off-by: James Tucker <james@tailscale.com>	1 year ago
Mihai Parparita	4722f7e322	all: move network monitoring from wgengine/monitor to net/netmon ... We're using it in more and more places, and it's not really specific to our use of Wireguard (and does more just link/interface monitoring). Also removes the separate interface we had for it in sockstats -- it's a small enough package (we already pull in all of its dependencies via other paths) that it's not worth the extra complexity. Updates #7621 Updates #7850 Signed-off-by: Mihai Parparita <mihai@tailscale.com>	3 years ago