tailscale

Commit Graph

Author	SHA1	Message	Date
julianknodt	fb06ad19e7	wgcfg: Switch to using mem.RO As Brad suggested, mem.RO allows for a lot of easy perf gains. There were also some smaller changes outside of mem.RO, such as using hex.Decode instead of hex.DecodeString. ``` name old time/op new time/op delta FromUAPI-8 14.7µs ± 3% 12.3µs ± 4% -16.58% (p=0.008 n=5+5) name old alloc/op new alloc/op delta FromUAPI-8 9.52kB ± 0% 7.04kB ± 0% -26.05% (p=0.008 n=5+5) name old allocs/op new allocs/op delta FromUAPI-8 77.0 ± 0% 29.0 ± 0% -62.34% (p=0.008 n=5+5) ``` Signed-off-by: julianknodt <julianknodt@gmail.com>	3 years ago
julianknodt	d349a3231e	wgcfg: use string cut instead of string split Signed-off-by: julianknodt <julianknodt@gmail.com>	3 years ago
julianknodt	664edbe566	wgcfg: add benchmark for FromUAPI Adds a benchmark for FromUAPI in wgcfg. It appears that it's not actually that slow, the main allocations are from the scanner and new config. Updates #1912. Signed-off-by: julianknodt <julianknodt@gmail.com>	3 years ago
Josh Bleecher Snyder	1ece91cede	go.mod: upgrade wireguard-windows, de-fork wireguard-go Pull in the latest version of wireguard-windows. Switch to upstream wireguard-go. This requires reverting all of our import paths. Unfortunately, this has to happen at the same time. The wireguard-go change is very low risk, as that commit matches our fork almost exactly. (The only changes are import paths, CI files, and a go.mod entry.) So if there are issues as a result of this commit, the first place to look is wireguard-windows changes. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 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
Josh Bleecher Snyder	aacb2107ae	all: add extra information to serialized endpoints magicsock.Conn.ParseEndpoint requires a peer's public key, disco key, and legacy ip/ports in order to do its job. We currently accomplish that by: * adding the public key in our wireguard-go fork * encoding the disco key as magic hostname * using a bespoke comma-separated encoding It's a bit messy. Instead, switch to something simpler: use a json-encoded struct containing exactly the information we need, in the form we use it. Our wireguard-go fork still adds the public key to the address when it passes it to ParseEndpoint, but now the code compensating for that is just a couple of simple, well-commented lines. Once this commit is in, we can remove that part of the fork and remove the compensating code. Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>	4 years ago
Josh Bleecher Snyder	bc68e22c5b	all: s/CreateEndpoint/ParseEndpoint/ in docs Upstream wireguard-go renamed the interface method from CreateEndpoint to ParseEndpoint. I missed some comments. Fix them. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	9bce1b7fc1	wgengine/wgcfg: make device test endpoint-format-agnostic By using conn.NewDefaultBind, this test requires that our endpoints be comprehensible to wireguard-go. Instead, use a no-op bind that treats endpoints as opaque strings. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	73ad1f804b	wgengine/wgcfg: use autogenerated Clone methods Delete the manually written ones named Copy. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	777c816b34	wgengine/wgcfg: return better errors from DeviceConfig, ReconfigDevice Prefer the error from the actual wireguard-go device method call, not {To,From}UAPI, as those tend to be less interesting I/O errors. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	1f6c4ba7c3	wgengine/wgcfg: prevent ReconfigDevice from hanging on error When wireguard-go's UAPI interface fails with an error, ReconfigDevice hangs. Fix that by buffering the channel and closing the writer after the call. The code now matches the corresponding code in DeviceConfig, where I got it right. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	7ee891f5fd	all: delete wgcfg.Key and wgcfg.PrivateKey For historical reasons, we ended up with two near-duplicate copies of curve25519 key types, one in the wireguard-go module (wgcfg) and one in the tailscale module (types/wgkey). Then we moved wgcfg to the tailscale module. We can now remove the wgcfg key type in favor of wgkey. Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>	4 years ago
Josh Bleecher Snyder	07c95a0219	wgengine/wgcfg/nmcfg: consolidate exit node log lines These were getting rate-limited for nodes with many peers. Consolate the output into single lines, which are nicer anyway. Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>	4 years ago
Josh Bleecher Snyder	69cdc30c6d	wgengine/wgcfg: remove Config.ListenPort We don't use the port that wireguard-go passes to us (via magicsock.connBind.Open). We ignore it entirely and use the port we selected. When we tell wireguard-go that we're changing the listen_port, it calls connBind.Close and then connBind.Open. And in the meantime, it stops calling the receive functions, which means that we stop receiving and processing UDP and DERP packets. And that is Very Bad. That was never a problem prior to `b3ceca1dd7`, because we passed the SkipBindUpdate flag to our wireguard-go fork, which told wireguard-go not to re-bind on listen_port changes. That commit eliminated the SkipBindUpdate flag. We could write a bunch of code to work around the gap. We could add background readers that process UDP and DERP packets when wireguard-go isn't. But it's simpler to never create the conditions in which wireguard-go rebinds. The other scenario in which wireguard-go re-binds is device.Down. Conveniently, we never call device.Down. We go from device.Up to device.Close, and the latter only when we're shutting down a magicsock.Conn completely. Rubber-ducked-by: Avery Pennarun <apenwarr@tailscale.com> Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	b3ceca1dd7	wgengine/...: split into multiple receive functions Upstream wireguard-go has changed its receive model. NewDevice now accepts a conn.Bind interface. The conn.Bind is stateless; magicsock.Conns are stateful. To work around this, we add a connBind type that supports cheap teardown and bring-up, backed by a Conn. The new conn.Bind allows us to specify a set of receive functions, rather than having to shoehorn everything into ReceiveIPv4 and ReceiveIPv6. This lets us plumbing DERP messages directly into wireguard-go, instead of having to mux them via ReceiveIPv4. One consequence of the new conn.Bind layer is that closing the wireguard-go device is now indistinguishable from the routine bring-up and tear-down normally experienced by a conn.Bind. We thus have to explicitly close the magicsock.Conn when the close the wireguard-go device. One downside of this change is that we are reliant on wireguard-go to call receiveDERP to process DERP messages. This is fine for now, but is perhaps something we should fix in the future. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Brad Fitzpatrick	7f03c0f8fe	wgengine/wgcfg/nmcfg: reduce some logging when a /0 route skipped Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Josh Bleecher Snyder	7b907615d5	wgengine/wgcfg/nmcfg: remove dead code The call to appendEndpoint updates cpeer.Endpoints. Then it is overwritten in the next line. The only errors from appendEndpoint occur when the host/port pair is malformed, but that cannot happen. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	28af46fb3b	wgengine: pass logger as a separate arg to device.NewDevice Adapt to minor API changes in wireguard-go. And factor out device.DeviceOptions variables. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
David Anderson	2404c0ffad	ipn/ipnlocal: only filter out default routes when computing the local wg config. UIs need to see the full unedited netmap in order to know what exit nodes they can offer to the user. Signed-off-by: David Anderson <danderson@tailscale.com>	4 years ago
Brad Fitzpatrick	1e7a35b225	types/netmap: split controlclient.NetworkMap off into its own leaf package Updates #1278 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	6064b6ff47	wgengine/wgcfg/nmcfg: split control/controlclient/netmap.go into own package It couldn't move to ipnlocal due to test dependency cycles. Updates #1278 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>	4 years ago
Brad Fitzpatrick	761188e5d2	wgengine/wgcfg: fix validateEndpoints of empty string Updates tailscale/corp#1238	4 years ago
Josh Bleecher Snyder	fe7c3e9c17	all: move wgcfg from wireguard-go This is mostly code movement from the wireguard-go repo. Most of the new wgcfg package corresponds to the wireguard-go wgcfg package. wgengine/wgcfg/device{_test}.go was device/config{_test}.go. There were substantive but simple changes to device_test.go to remove internal package device references. The API of device.Config (now wgcfg.DeviceConfig) grew an error return; we previously logged the error and threw it away. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago

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73 Commits (74c399483c59e3a3e1c5266086928d730268d576)