Commit Graph

710 Commits (03682cb27185076028a95b7c3454a2d2e589b107)
 

Author SHA1 Message Date
Dmytro Shynkevych 635f7b99f1 wgengine: pass tun.NativeDevice to router
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
5 years ago
David Anderson 9c914dc7dd wgengine/router: stop using -m comment.
The comment module is compiled out on several embedded systems (and
also gentoo, because netfilter can't go brrrr with comments holding it
back). Attempting to use comments results in a confusing error, and a
non-functional firewall.

Additionally, make the legacy rule cleanup non-fatal, because we *do*
have to probe for the existence of these -m comment rules, and doing
so will error out on these systems.

Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson 3e27b3c33c wgengine/router: more comments.
Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson 0fe262f093 ipn: plumb NetfilterMode all the way out to the CLI.
Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson c67c8913c3 wgengine/router: add a test for linux router state transitions.
Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson 292606a975 wgengine/router: support multiple levels of netfilter involvement.
Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
Brad Fitzpatrick cff53c6e6d tailcfg: add DERP map structures
Updates #387
Updates #388

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
5 years ago
Brad Fitzpatrick 5ec7ac1d02 tstest: document PanicOnLog 5 years ago
Brad Fitzpatrick e6d0c92b1d wgengine/magicsock: clean up earlier fix a bit
Move WaitReady from fc88e34f42 into the
test code, and keep the derp-reading goroutine named for debugging.
5 years ago
Avery Pennarun d0754760e7 controlclient/auto_test: fix flake "peer OS is not linux" on macOS.
We were mis-counting the number of Synchronized messages that we should
have been generating.
5 years ago
Avery Pennarun 8f8607b6bf control/controlclient/auto_test: clean up logging to defeat 'go test' idiocy.
By default, nothing differentiates errors or fatals from regular logs, so they just
blend into the rest of the logs.

As a bonus, if you run a test using t.Run(), the log messages printed
via the sub-t.Run() are printed at a different time from log messages
printed via the parent t.Run(), making debugging almost impossible.

This doesn't actually fix the test flake I'm looking for, but at least
I can find it in the logs now.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
5 years ago
Avery Pennarun d53e8fc0da router_darwin_support: we can build this on every platform.
Our new build scripts try to build ipn-go-bridge on more than just
linux and darwin, so let's enable this file so it can be successful on
every platform.
5 years ago
Avery Pennarun 3b1ce30967 Merge branch 'master' of github.com:tailscale/tailscale
* 'master' of github.com:tailscale/tailscale:
  derp/derphttp: don't use x/net/proxy for SOCKS on iOS
5 years ago
Avery Pennarun 286f96e412 control/controlclient: fix a very rare httptest.Server log.Printf.
Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
5 years ago
Brad Fitzpatrick 040a0d5121 derp/derphttp: don't use x/net/proxy for SOCKS on iOS
We don't want those extra dependencies on iOS, at least yet.

Especially since there's no way to set the relevant environment
variables so it's just bloat with no benefits. Perhaps we'll need to
do SOCKS on iOS later, but probably differently if/when so.

Updates #227

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
5 years ago
Avery Pennarun fc88e34f42 wgengine/magicsock/tests: wait for home DERP connection before sending packets.
This fixes an elusive test flake. Fixes #161.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
5 years ago
Avery Pennarun 4f128745d8 magicsock/test: oops, fix a data race in nested-test logf hack.
Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
5 years ago
Avery Pennarun 42a0e0c601 wgengine/magicsock/tests: call tstest.ResourceCheck for each test.
This didn't catch anything yet, but it's good practice for detecting
goroutine leaks that we might not find otherwise.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
5 years ago
Avery Pennarun 08acb502e5 Add tstest.PanicOnLog(), and fix various problems detected by this.
If a test calls log.Printf, 'go test' horrifyingly rearranges the
output to no longer be in chronological order, which makes debugging
virtually impossible. Let's stop that from happening by making
log.Printf panic if called from any module, no matter how deep, during
tests.

This required us to change the default error handler in at least one
http.Server, as well as plumbing a bunch of logf functions around,
especially in magicsock and wgengine, but also in logtail and backoff.

To add insult to injury, 'go test' also rearranges the output when a
parent test has multiple sub-tests (all the sub-test's t.Logf is always
printed after all the parent tests t.Logf), so we need to screw around
with a special Logf that can point at the "current" t (current_t.Logf)
in some places. Probably our entire way of using subtests is wrong,
since 'go test' would probably like to run them all in parallel if you
called t.Parallel(), but it definitely can't because the're all
manipulating the shared state created by the parent test. They should
probably all be separate toplevel tests instead, with common
setup/teardown logic. But that's a job for another time.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
5 years ago
Avery Pennarun e0b666c5d2 tstest.ResourceCheck: clarify success message.
Inclusion of the word "assert" made it seem like a failure, even though
it was supposed to be identifying the name of the function (Assert()).

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
5 years ago
Avery Pennarun 89a6f27cf8 Merge remote-tracking branch 'origin/master' into base
* origin/master:
  types/logger: add ArgWriter
  wgengine: wrap tun.Device to support filtering and packet injection (#358)
5 years ago
Avery Pennarun a7edf11a40 {ipn,control/controlclient}/tests: pass a logf function to control.New().
This matches the new API requirements.

Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
5 years ago
Brad Fitzpatrick fe97bedf67 types/logger: add ArgWriter 5 years ago
Dmytro Shynkevych 33b2f30cea
wgengine: wrap tun.Device to support filtering and packet injection (#358)
Right now, filtering and packet injection in wgengine depend
on a patch to wireguard-go that probably isn't suitable for upstreaming.

This need not be the case: wireguard-go/tun.Device is an interface.
For example, faketun.go implements it to mock a TUN device for testing.

This patch implements the same interface to provide filtering
and packet injection at the tunnel device level,
at which point the wireguard-go patch should no longer be necessary.

This patch has the following performance impact on i7-7500U @ 2.70GHz,
tested in the following namespace configuration:
┌────────────────┐    ┌─────────────────────────────────┐     ┌────────────────┐
│      $ns1      │    │               $ns0              │     │      $ns2      │
│    client0     │    │      tailcontrol, logcatcher    │     │     client1    │
│  ┌─────┐       │    │  ┌──────┐         ┌──────┐      │     │  ┌─────┐       │
│  │vethc│───────┼────┼──│vethrc│         │vethrs│──────┼─────┼──│veths│       │
│  ├─────┴─────┐ │    │  ├──────┴────┐    ├──────┴────┐ │     │  ├─────┴─────┐ │
│  │10.0.0.2/24│ │    │  │10.0.0.1/24│    │10.0.1.1/24│ │     │  │10.0.1.2/24│ │
│  └───────────┘ │    │  └───────────┘    └───────────┘ │     │  └───────────┘ │
└────────────────┘    └─────────────────────────────────┘     └────────────────┘
Before:
---------------------------------------------------
| TCP send               | UDP send               |
|------------------------|------------------------|
| 557.0 (±8.5) Mbits/sec | 3.03 (±0.02) Gbits/sec |
---------------------------------------------------
After:
---------------------------------------------------
| TCP send               | UDP send               |
|------------------------|------------------------|
| 544.8 (±1.6) Mbits/sec | 3.13 (±0.02) Gbits/sec |
---------------------------------------------------
The impact on receive performance is similar.

Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
5 years ago
David Anderson 9ccbcda612 wgengine/router: rename config.Settings to config.Config, make pointer.
Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson 72cae5504c wgengine: generate and plumb router.Settings in from ipn.
This saves a layer of translation, and saves us having to
pass in extra bits and pieces of the netmap and prefs to
wgengine. Now it gets one Wireguard config, and one OS
network stack config.

Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
Brad Fitzpatrick e42ec4efba derp/derphttp: use SOCKS/etc proxies for derphttp dials
Updates #227

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
5 years ago
Wendi Yu 3663797815 Reduce logspam from node with no peers
Signed-off-by: Wendi Yu <wendi.yu@yahoo.ca>
5 years ago
David Anderson cd01bcc395 wgengine/router: allow loopback traffic from our own IP(s).
Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
Brad Fitzpatrick 64f6104e63 portlist: reduce log spam/scariness for portlist in mac sandbox
Fixes tailscale/corp#235
5 years ago
David Anderson bfdc8175b1 wgengine/router: add a setting to disable SNAT for subnet routes.
Part of #320.

Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
Brad Fitzpatrick 8eda667aa1 types/logger: simplify mutex locking in rate-limited logger
Updates #365

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
5 years ago
halulu 874be6566d
netcheck: DERP latency over HTTPS when UDP is blocked
* netcheck: DERP letency over HTTPS when UDP failed

Updates #207

Signed-off-by: Zijie Lu <zijie@tailscale.com>

* netcheck: async DERP latency check over HTTPS

Updates #207

Signed-off-by: Zijie Lu <zijie@tailscale.com>

* netcheck: DERP latency check over HTTPS: fix concurrent map

Updates #207

Signed-off-by: Zijie Lu <zijie@tailscale.com>

* netcheck: DERP latency check over HTTPS: some improvements

Updates #207

Signed-off-by: Zijie Lu <zijie@tailscale.com>

* netcheck: DERP latency check over HTTPS: use timeout context

Updates #207

Signed-off-by: Zijie Lu <zijie@tailscale.com>

* netcheck: DERP latency check over HTTPS: use report mutex

Updates #207

Signed-off-by: Zijie Lu <zijie@tailscale.com>

* netcheck: DERP latency check over HTTPS if UDP is BLOCKED

Updates #207

Signed-off-by: Zijie Lu <zijie@tailscale.com>

* netcheck: DERP latency check over HTTPS: new function measureHTTPSLatency

Updates #207

Signed-off-by: Zijie Lu <zijie@tailscale.com>
5 years ago
Brad Fitzpatrick 8a3e77fc43 ipn, wgengine/filter: remove exported type aliases 5 years ago
David Anderson 8b0be7475b cmd/tailscale: warn subnet route users if IP forwarding is off. #320
Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson ad1cfe8bbe cmd/tailscale: support IPs or CIDRs in -advertise-routes.
Fixes #370.

Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson 21ac65d3da wgengine/router: explicitly detect and complain about busybox's `ip`.
Defensive programming against #368 in environments other than Docker,
e.g. if you try using Tailscale in Alpine Linux directly, sans
container.

Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson e00b814a24 Dockerfile: install iproute2 in the container image.
Fixes #368.

Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson 381b94d4d1 wgengine/router: include command output if `ip rule list` fails.
Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson e83d02ffd1 wgengine: don't double-close tundev on setup error.
Part of #368.

Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson efc1feedc9 wgengine/router: include more information when iptables ops fail.
The iptables package we use doesn't include command output, so we're
left with guessing what went wrong most of the time. This will at
least narrow things down to which operation failed.

Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
Brad Fitzpatrick 529e2cb31a ipn: add AllowVersionSkew bool to Notify & Message
For "tailscale status" on macOS (from separately downloaded
cmd/tailscale binary against App Store IPNExtension).

(This isn't all of it, but I've had this sitting around uncommitted.)
5 years ago
Wendi Yu fde384b359 Fix macOS build
staticcheck used to fail on macOS (and presumably windows) due to a
variable declared in a common package that was only used by the Linux
build, which would prevent `redo pr` from passing on Mac. Moved variable
declaration from the common file to the Linux-specific one to resolve
the compiler complaint.

Signed-off-by: Wendi Yu <wendi.yu@yahoo.ca>
5 years ago
David Anderson e16f7e48a3 wgengine: simplify wgcfg.* to netaddr.* conversion.
Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson 48b1e85e8a types/logger: fix deadlock in the burst case.
Fixes #365.

Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
David Anderson ccbd0937d0 wgengine: avoid v6 mapped v4 IPs when converting to netaddr types.
Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago
Sylvain Rabot 74d6ab995d ipn/ipnstate: improve HTML output
Signed-off-by: Sylvain Rabot <sylvain@abstraction.fr>
5 years ago
Wendi Yu 0c69b4e00d
Implement rate limiting on log messages (#356)
Implement rate limiting on log messages

Addresses issue #317, where logs can get spammed with the same message
nonstop. Created a rate limiting closure on logging functions, which
limits the number of messages being logged per second based on format
string. To keep memory usage as constant as possible, the previous cache
purging at periodic time intervals has been replaced by an LRU that
discards the oldest string when the capacity of the cache is reached.


Signed-off-by: Wendi Yu <wendi.yu@yahoo.ca>
5 years ago
Wendi Yu 499c8fcbb3
Replace our ratelimiter with standard rate package (#359)
* Replace our ratelimiter with standard rate package

Signed-off-by: Wendi Yu <wendi.yu@yahoo.ca>
5 years ago
David Anderson b01db109f5 wgengine/router: use inet.af/netaddr, not wgcfg.CIDR.
Signed-off-by: David Anderson <danderson@tailscale.com>
5 years ago