tailscale

Commit Graph

Author	SHA1	Message	Date
James Tucker	c0a1ed86cb	tstest/natlab: add latency & loss simulation A simple implementation of latency and loss simulation, applied to writes to the ethernet interface of the NIC. The latency implementation could be optimized substantially later if necessary. Updates #13355 Signed-off-by: James Tucker <james@tailscale.com>	4 weeks ago
Brad Fitzpatrick	c763b7a7db	syncs: delete Map.Range, update callers to iterators Updates #11038 Change-Id: I2819fed896cc4035aba5e4e141b52c12637373b1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	2 months ago
Brad Fitzpatrick	c4d0237e5c	tstest/natlab: add dual stack with blackholed IPv4 This reproduces the bug report from https://github.com/tailscale/tailscale/issues/13346 It does not yet fix it. Updates #13346 Change-Id: Ia5af7b0481a64a37efe259c798facdda6d9da618 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	3d9e3a17fa	tstest/natlab/vnet: move some boilerplate to mkPacket helper No need to make callers specify the redundant IP version or TTL/HopLimit or EthernetType in the common case. The mkPacket helper can set those when unset. And use the mkIPLayer in another place, simplifying some code. And rename mkPacketErr to just mkPacket, then move mkPacket to test-only code, as mustPacket. Updates #13038 Change-Id: Ic216e44dda760c69ab9bfc509370040874a47d30 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	7e88d6712e	tstest/natlab/vnet: add syslog tests Updates #13038 Change-Id: I4ac96cb0a9e46a2fb1e09ddedd3614eb006c2c8c Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	b1a5b40318	tstest/natlab/vnet: add DHCP tests, ignore DHCPv4 on v6-only networks And clean up some of the test helpers in the process. Updates #13038 Change-Id: I3e2b5f7028a32d97af7f91941e59399a8e222b25 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	ffa1c93f59	tstest/natlab/vnet: use mkPacketErr in more places I'd added this helper for tests, but then moved it to non-test code and forgot some places to use it. This uses it in more places to remove some boilerplate. Updates #13038 Change-Id: Ic4dc339be1c47a55b71d806bab421097ee3d75ed Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	82c2c5c597	tstest/natlab/vnet: add more tests This adds tests for DNS requests, and ignoring IPv6 packets on v4-only networks. No behavior changes. But some things are pulled out into functions. And the mkPacket helpers previously just for tests are moved into non-test code to be used elsewhere to reduce duplication, doing the checksum stuff automatically. Updates #13038 Change-Id: I4dd0b73c75b2b9567b4be3f05a2792999d83f6a3 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	73b3c8fc8c	tstest/natlab/vnet: add IPv6 all-nodes support This adds support for sending packets to 33:33:00:00:01 at IPv6 multicast address ff02::1 to send to all nodes. Nothing in Tailscale depends on this (yet?), but it makes debugging in VMs behind natlab easier (e.g. you can ping all nodes), and other things might depend on this in the future. Mostly I'm trying to flesh out the IPv6 support in natlab now that we can write vnet tests. Updates #13038 Change-Id: If590031fcf075690ca35c7b230a38c3e72e621eb Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	8b23ba7d05	tstest/natlab/vnet: add qemu + Virtualization.framework protocol tests To test how virtual machines connect to the natlab vnet code. Updates #13038 Change-Id: Ia4fd4b0c1803580ee7d94cc9878d777ad4f24f82 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	ff1d0aa027	tstest/natlab/vnet: start adding tests And refactor some of vnet.go for testability. The only behavioral change (with a new test) is that ethernet broadcasts no longer get sent back to the sender. Updates #13038 Change-Id: Ic2e7e7d6d8805b7b7f2b5c52c2c5ba97101cef14 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	f99f970dc1	tstest/natlab/vnet: rename some things for clarity The bad naming (which had only been half updated with the IPv6 changes) tripped me up in the earlier change. Updates #13038 Change-Id: I65ce07c167e8219d35b87e1f4bf61aab4cac31ff Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	0157000cab	tstest/natlab: fix IPv6 tests, remove TODOs The reason they weren't working was because the cmd/tta agent in the guest was dialing out to the test and the vnet couldn't map its global unicast IPv6 address to a node as it was just using a map[netip.Addr]node and blindly trusting the node was populated. Instead, it was nil, so the agent connection fetching didn't work for its RoundTripper and the test could never drive the node. That map worked for IPv4 but for IPv6 we need to use the method that takes into account the node's IPv6 SLAAC address. Most call sites had been converted but I'd missed that one. Also clean up some debug, and prohibit nodes' link-local unicast addresses from dialing 2000::/3 directly for now. We can allow that to be configured opt-in later (some sort of IPv6 NAT mode. Whatever it's called.) That mode was working on accident, but was confusing: Linux would do source address selection from link local for the first few seconds and then after SLAAC and DAD, switch to using the global unicast source address. Be consistent for now and force it to use the global unicast. Updates #13038 Change-Id: I85e973aaa38b43c14611943ff45c7c825ee9200a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	6dd1af0d1e	tstest/natlab: refactor HandleEthernetPacketForRouter a bit Move all the UDP handling to its own func to remove a bunch of "if isUDP" checks in a bunch of blocks. Updates #13038 Change-Id: If71d71b49e57651d15bd307a2233c43751cc8639 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	3a8cfbc381	tstest/natlab: be more paranoid about IP versions from gvisor I didn't actually see this, but added this while debugging something and figured it'd be good to keep. Updates #13038 Change-Id: I67934c8a329e0233f79c3b08516fd6bad6bfe22a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	e0bdd5d058	tstest/natlab: simplify a defer Updates #13038 Change-Id: I4d38701491523c64c81767b0838010609e683a9f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	b78df4d48a	tstest/natlab/vnet: add start of IPv6 support Updates #13038 Change-Id: Ic3d095f167daf6c7129463e881b18f2e0d5693f5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Maisem Ali	31b5239a2f	tstest/natlab/vnet: flush and sync pcap file after every packet So that we can view the pcap as we debug interactively. Updates #13038 Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 months ago
Brad Fitzpatrick	e5fd36ad78	tstest/natlab: respect NATTable interface's invalid-means-drop everywhere And sprinkle some more docs around. Updates #13038 Change-Id: Ia2dcf567b68170481cc2094d64b085c6b94a778a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	aa42ae9058	tstest/natlab: make a new virtualIP type in prep for IPv6 support All the magic service names with virtual IPs will need IPv6 variants. Pull this out in prep. Updates #13038 Change-Id: I53b5eebd0679f9fa43dc0674805049258c83a0de Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	5a99940dfa	tstest/natlab/vnet: explicitly ignore PCP and SSDP UDP queries So we don't log about them when verbose logging is enabled. Updates #13038 Change-Id: I925bc3a23e6c93d60dd4fb4bf6a4fdc5a326de95 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	3b70968c25	cmd/vnet: add --blend and --pcap flags Updates #13038 Change-Id: Id16ea9eb94447a3d9651215f04b2525daf10b3eb Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	3904e4d175	cmd/tta, tstest/natlab/vnet: remove unneeded port 124 log hack, add log buffer The natlab Test Agent (tta) still had its old log streaming hack in place where it dialed out to anything on TCP port 124 and those logs were streamed to the host running the tests. But we'd since added gokrazy syslog streaming support, which made that redundant. So remove all the port 124 stuff. And then make sure we log to stderr so gokrazy logs it to syslog. Also, keep the first 1MB of logs in memory in tta too, exported via localhost:8034/logs for interactive debugging. That was very useful during debugging when I added IPv6 support. (which is coming in future PRs) Updates #13038 Change-Id: Ieed904a704410b9031d5fd5f014a73412348fa7f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Jonathan Nobels	1191eb0e3d	tstest/natlab: add unix address to writer for dgram mode updates tailcale/corp#22371 For dgram mode, we need to store the write addresses of the client socket(s) alongside the writer functions and the write operation needs to use WriteToUnix. Unix also has multiple clients writing to the same socket, so the serve method is modified to handle packets from multiple mac addresses. Cleans up a bit of cruft from the initial tailmac tooling commit. Now all the macOS packets are belong to us. Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>	3 months ago
Brad Fitzpatrick	d985da207f	tstest/natlab/vnet: fix one-by-one from earlier numbering change `84adfa1ba3` made MAC addresses 1-based too, but didn't adjust this IP address calculation which was based on the MAC address Updates #13038 Change-Id: Idc112b303b0b85f41fe51fd61ce1c0d8a3f0f57e Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	84adfa1ba3	tstest/natlab/vnet: standardize on 1-based naming of nodes, networks, MACs We had a mix of 0-based and 1-based nodes and MACs in logs. Updates #13038 Change-Id: I36d1b00f7f94b37b4ae2cd439bcdc5dbee6eda4d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	10d0ce8dde	tstest/natlab: get tailscaled logs from gokrazy via syslog Using https://github.com/gokrazy/gokrazy/pull/275 This is much lower latency than logcatcher, which is higher latency and chunkier. And this is better than getting it via 'tailscale debug daemon-logs', which misses early interesting logs. Updates #13038 Change-Id: I499ec254c003a9494c0e9910f9c650c8ac44ef33 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Brad Fitzpatrick	a61825c7b8	cmd/tta, vnet: add host firewall, env var support, more tests In particular, tests showing that #3824 works. But that test doesn't actually work yet; it only gets a DERP connection. (why?) Updates #13038 Change-Id: Ie1fd1b6a38d4e90fae7e72a0b9a142a95f0b2e8f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	3 months ago
Maisem Ali	10c2bee9e1	tstest/natlab/vnet: capture network wan/lan interfaces Updates #13038 Signed-off-by: Maisem Ali <maisem@tailscale.com>	3 months ago
Brad Fitzpatrick	44d634395b	tstest/natlab/vnet: add easyAF Endpoint-indepedent Mapping with only Address (but not port) dependent filtering. Updates #13038 Change-Id: I1ec88301acafcb79bf878f9600a7286e8af0f173 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Maisem Ali	d4cc074187	tstest/natlab/vnet: add pcap support Updates #13038 Change-Id: I89ce2129fee856f97986d6313d2b661c76476c0c Signed-off-by: Maisem Ali <maisem@tailscale.com>	4 months ago
Brad Fitzpatrick	194ff6ee3d	tstest/integration/nat: add sameLAN node type To test local connections. Updates #13038 Change-Id: I575dcab31ca812edf7d04fa126772611cf89b9a7 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Brad Fitzpatrick	f47a5fe52b	vnet: reduce some log spam Updates #13038 Change-Id: I76038a90dfde10a82063988a5b54190074d4b5c5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Brad Fitzpatrick	bb3e95c40d	vnet: fix port mapping (w/ maisem + andrew) Co-authored-by: Maisem Ali <maisem@tailscale.com> Co-authored-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I703b39f05af2e3e1a979be8e77091586cb9ec3eb Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Brad Fitzpatrick	17a10f702f	vnet: add network.logf Updates #13038 Change-Id: Ia5a9359b8bfa18264d64600dfa1ef01eb8728dc2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Brad Fitzpatrick	6798f8ea88	tstest/natlab/vnet: add port mapping Updates #13038 Change-Id: Iaf274d250398973790873534b236d5cbb34fbe0e Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Maisem Ali	12764e9db4	natlab: add NodeAgentClient This adds a new NodeAgentClient type that can be used to invoke the LocalAPI using the LocalClient instead of handcrafted URLs. However, there are certain cases where it does make sense for the node agent to provide more functionality than whats possible with just the LocalClient, as such it also exposes a http.Client to make requests directly. Signed-off-by: Maisem Ali <maisem@tailscale.com>	4 months ago
Brad Fitzpatrick	1016aa045f	hostinfo: add hostinfo.IsNATLabGuestVM And don't make guests under vnet/natlab upload to logcatcher, as there won't be a valid cert anyway. Updates #13038 Change-Id: Ie1ce0139788036b8ecc1804549a9b5d326c5fef5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Brad Fitzpatrick	8594292aa4	vnet: add control/derps to test, stateful firewall Updates #13038 Change-Id: Icd65b34c5f03498b5a7109785bb44692bce8911a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago
Brad Fitzpatrick	1ed958fe23	tstest/natlab/vnet: add start of virtual network-based NAT Lab Updates #13038 Change-Id: I3c74120d73149c1329288621f6474bbbcaa7e1a6 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 months ago

40 Commits (8ba9b558d2a8efe172f7a005ec1e6572b60f05e2)