tailscale

Commit Graph

Author	SHA1	Message	Date
Maisem Ali	8e40bfc6ea	wgengine/monitor: ignore OS-specific uninteresting interfaces Currently we ignore these interfaces in the darwin osMon but then would consider it interesting when checking if anything had changed. Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 years ago
James Tucker	f4aad61e67	wgengine/monitor: ignore duplicate RTM_NEWADDRs Ignoring the events at this layer is the simpler path for right now, a broader change should follow to suppress irrelevant change events in a higher layer so as to avoid related problems with other monitoring paths on other platforms. This approach may also carry a small risk that it applies an at-most-once invariant low in the chain that could be assumed otherwise higher in the code. I adjusted the newAddrMessage type to include interface index rather than a label, as labels are not always supplied, and in particular on my test hosts they were consistently missing for ipv6 address messages. I adjusted the newAddrMessage.Addr field to be populated from Attributes.Address rather than Attributes.Local, as again for ipv6 .Local was always empty, and with ipv4 the .Address and .Local contained the same contents in each of my test environments. Update #4282 Signed-off-by: James Tucker <james@tailscale.com>	3 years ago
James Tucker	2f69c383a5	wgengine/monitor: add envknob TS_DEBUG_NETLINK While I trust the test behavior, I also want to assert the behavior in a reproduction environment, this envknob gives me the log information I need to do so. Update #4282 Signed-off-by: James Tucker <james@tailscale.com>	3 years ago
Brad Fitzpatrick	86a902b201	all: adjust some log verbosity Updates #1548 Change-Id: Ia55f1b5dc7dfea09a08c90324226fb92cd10fa00 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	a5da4ed981	all: gofmt with Go 1.17 This adds "//go:build" lines and tidies up existing "// +build" lines. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	3 years ago
Brad Fitzpatrick	e4fecfe31d	wgengine/{monitor,router}: restore Linux ip rules when systemd deletes them Thanks. Fixes #1591 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	e41193ec4d	wgengine/monitor: don't spam about Linux RTM_NEWRULE events The earlier `2ba36c294b` started listening for ip rule changes and only cared about DELRULE events, buts its subscription included all rule events, including new ones, which meant we were then catching our own ip rule creations and logging about how they were unknown. Stop that log spam. Updates #1591 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Brad Fitzpatrick	2ba36c294b	wgengine/monitor: subscribe to Linux ip rule events, log on rule deletes For debugging & working on #1591 where certain versions of systemd-networkd delete Tailscale's ip rule entries. Updates #1591 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 years ago
Josh Bleecher Snyder	25df067dd0	all: adapt to opaque netaddr types This commit is a mishmash of automated edits using gofmt: gofmt -r 'netaddr.IPPort{IP: a, Port: b} -> netaddr.IPPortFrom(a, b)' -w . gofmt -r 'netaddr.IPPrefix{IP: a, Port: b} -> netaddr.IPPrefixFrom(a, b)' -w . gofmt -r 'a.IP.Is4 -> a.IP().Is4' -w . gofmt -r 'a.IP.As16 -> a.IP().As16' -w . gofmt -r 'a.IP.Is6 -> a.IP().Is6' -w . gofmt -r 'a.IP.As4 -> a.IP().As4' -w . gofmt -r 'a.IP.String -> a.IP().String' -w . And regexps: \w(.)\.Port = (.) -> $1 = $1.WithPort($2) \w(.)\.IP = (.) -> $1 = $1.WithIP($2) And lots of manual fixups. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Brad Fitzpatrick	d5d70ae9ea	wgengine/monitor: reduce Linux log spam on down Fixes #1689 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Denton Gentry	35ab4020c7	wgengine/monitor: Linux fall back to polling Google Cloud Run does not implement NETLINK_ROUTE RTMGRP. If initialization of the netlink socket or group membership fails, fall back to a polling implementation. Signed-off-by: Denton Gentry <dgentry@tailscale.com>	4 years ago
Brad Fitzpatrick	7461dded88	wgengine/monitor: on unsupported platforms, use a polling implementation Not great, but lets people working on new ports get going more quickly without having to do everything up front. As the link monitor is getting used more, I felt bad having a useless implementation. Updates #815 Updates #1427 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
David Anderson	6e42430ad8	wgengine/monitor: don't log any single-IP routes added to the tailscale table. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
David Anderson	df5adb2e23	wgengine/monitor: on linux, also monitor for IPv6 changes. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Matt Layher	bfbd6b9241	go.mod: bump github.com/mdlayher/netlink to v1.2.0 Signed-off-by: Matt Layher <mdlayher@gmail.com>	4 years ago
Brad Fitzpatrick	b983e5340f	wgengine/monitor: add, clean up netlink logging on route changes Updates #643	4 years ago
Brad Fitzpatrick	43bc86588e	wgengine/monitor: log RTM_DELROUTE details, fix format strings Updates #643	4 years ago
Wendi Yu	c3736250a4	wgengine: fix macos staticcheck errors (#557 ) Signed-off-by: Wendi <wendi.yu@yahoo.ca>	4 years ago
Brad Fitzpatrick	ce1b52bb71	wgengine/monitor: fix other potential crashes on Linux Never return "nil, nil" anymore. The caller expected a usable interface now. I missed some of these earlier. Also, handle address deletion now. Updates #532	4 years ago
Brad Fitzpatrick	4b75a27969	wgengine/monitor: fix crash on Linux on type 21 messages Fixes #532	4 years ago
Brad Fitzpatrick	4db60a8436	wgengine/monitor: parse Linux netlink messages, ignore our own events Fixes tailscale/corp#412 ("flood of link change events at start-up") Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Elias Naur	2dac4f2b24	wgengine/monitor: disable monitor on Android Netlink is not supported on Android. Signed-off-by: Elias Naur <mail@eliasnaur.com>	5 years ago
Tobias Klauser	4d09316f9a	wgengine/monitor: use RTMGRP_* consts from x/sys/unix Bump golang.org/x/sys/unix to get the RTMGRP_* consts and use them. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>	5 years ago
Brad Fitzpatrick	997678f540	wgengine/monitor: make Close not block forever on Linux Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
Brad Fitzpatrick	7f5e3febe5	wgengine: move link monitor to be owned by the engine, not the router And make the monitor package portable with no-op implementations on unsupported operating systems. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	5 years ago
wardn	2cafbd74c7	monitor: refactor for architecture-specific connection implementations Signed-off-by: wardn <wardn@users.noreply.github.com>	5 years ago

26 Commits (c41837842baf3e26878f50255cf009b0a85702ca)