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2021-02-03Merge branch 'tun-net-with-stack' into buildandroidMikael Magnusson
2021-02-03WIP: fix varMikael Magnusson
2021-02-03Merge branch 'tun-net-with-stack' into buildMikael Magnusson
2021-02-03WIP fix typesMikael Magnusson
2021-02-03Merge branch 'tun-net-with-stack' into buildMikael Magnusson
2021-02-03WIP: use zone as nic, default to 0Mikael Magnusson
2021-02-02Merge branches 'debug' and 'tun-net-with-stack' into build2Mikael Magnusson
2021-02-02WIP adapt to changed tunstackMikael Magnusson
2021-02-02tun: add CreateNetTUNWithStackMikael Magnusson
2021-02-02tun: implement AddAddressMikael Magnusson
2021-02-02WIP debugMikael Magnusson
2021-02-02WIP fix printfMikael Magnusson
2021-02-02WIP debug tunMikael Magnusson
2021-02-02device: use a waiting sync.Pool instead of a channelJason A. Donenfeld
Channels are FIFO which means we have guaranteed cache misses. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-29device: reduce number of append calls when paddingJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-29device: use int64 instead of atomic.Value for time stampJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-29device: use new model queues for handshakesJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-29device: simplify peer queue lockingJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-28device: reduce nesting when staging packetJason A. Donenfeld
Suggested-by: Josh Bleecher Snyder <josh@tailscale.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-28global: bump copyrightJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-28device: remove version stringJason A. Donenfeld
This is what modules are for, and Go binaries can introspect. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-28device: do not allow get to run while set runsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-28device: avoid hex allocations in IpcGetJason A. Donenfeld
benchmark old ns/op new ns/op delta BenchmarkUAPIGet-16 2872 2157 -24.90% benchmark old allocs new allocs delta BenchmarkUAPIGet-16 30 18 -40.00% benchmark old bytes new bytes delta BenchmarkUAPIGet-16 737 256 -65.26% Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-28device: the psk is not a chapoly keyJason A. Donenfeld
It's a separate type of key that gets hashed into the chain. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-27device: get rid of nonce routineJason A. Donenfeld
This moves to a simple queue with no routine processing it, to reduce scheduler pressure. This splits latency in half! benchmark old ns/op new ns/op delta BenchmarkThroughput-16 2394 2364 -1.25% BenchmarkLatency-16 259652 120810 -53.47% Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-27tun: use %w for errors on linuxJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-27device: avoid deadlock when changing private key and removing self peersJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-27device: use linked list for per-peer allowed-ip traversalJason A. Donenfeld
This makes the IpcGet method much faster. We also refactor the traversal API to use a callback so that we don't need to allocate at all. Avoiding allocations we do self-masking on insertion, which in turn means that split intermediate nodes require a copy of the bits. benchmark old ns/op new ns/op delta BenchmarkUAPIGet-16 3243 2659 -18.01% benchmark old allocs new allocs delta BenchmarkUAPIGet-16 35 30 -14.29% benchmark old bytes new bytes delta BenchmarkUAPIGet-16 1218 737 -39.49% This benchmark is good, though it's only for a pair of peers, each with only one allowedips. As this grows, the delta expands considerably. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-26device: combine debug and info log levels into 'verbose'Jason A. Donenfeld
There are very few cases, if any, in which a user only wants one of these levels, so combine it into a single level. While we're at it, reduce indirection on the loggers by using an empty function rather than a nil function pointer. It's not like we have retpolines anyway, and we were always calling through a function with a branch prior, so this seems like a net gain. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-26device: change logging interface to use functionsJosh Bleecher Snyder
This commit overhauls wireguard-go's logging. The primary, motivating change is to use a function instead of a *log.Logger as the basic unit of logging. Using functions provides a lot more flexibility for people to bring their own logging system. It also introduces logging helper methods on Device. These reduce line noise at the call site. They also allow for log functions to be nil; when nil, instead of generating a log line and throwing it away, we don't bother generating it at all. This spares allocation and pointless work. This is a breaking change, although the fix required of clients is fairly straightforward. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-26device: fix shadowing of err in IpcHandleJosh Bleecher Snyder
The declaration of err in nextByte, err := buffered.ReadByte shadows the declaration of err in op, err := buffered.ReadString('\n') above. As a result, the assignments to err in err = ipcErrorf(ipc.IpcErrorInvalid, "trailing character in UAPI get: %c", nextByte) and in err = device.IpcGetOperation(buffered.Writer) do not modify the correct err variable. Found by staticcheck. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-26device: remove extra error argJosh Bleecher Snyder
Caught by go vet. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-26device: reduce allocs in Device.IpcGetOperationBrad Fitzpatrick
Plenty more to go, but a start: name old time/op new time/op delta UAPIGet-4 6.37µs ± 2% 5.56µs ± 1% -12.70% (p=0.000 n=8+8) name old alloc/op new alloc/op delta UAPIGet-4 1.98kB ± 0% 1.22kB ± 0% -38.71% (p=0.000 n=10+10) name old allocs/op new allocs/op delta UAPIGet-4 42.0 ± 0% 35.0 ± 0% -16.67% (p=0.000 n=10+10) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-26device: add benchmark for UAPI Device.IpcGetOperationJosh Bleecher Snyder
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-26conn: fix interface parameter name in Bind interface docsBrad Fitzpatrick
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-25device: allow pipelining UAPI requestsJason A. Donenfeld
The original spec ends with \n\n especially for this reason. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-25ipc: add missing Windows errnoJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-25device: serialize access to IpcSetOperationJosh Bleecher Snyder
Interleaves IpcSetOperations would spell trouble. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-25device: simplify handling of IPC set endpointJosh Bleecher Snyder
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-25device: remove close processing fwmarkJosh Bleecher Snyder
Also, a behavior change: Stop treating a blank value as 0. It's not in the spec. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-25device: remove unnecessary commentJosh Bleecher Snyder
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-25device: introduce new IPC error message for unknown errorJosh Bleecher Snyder
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-25device: correct IPC error number for I/O errorsJosh Bleecher Snyder
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-25device: simplify IpcHandle error handlingJosh Bleecher Snyder
Unify the handling of unexpected UAPI errors. The comment that says "should never happen" is incorrect; this could happen due to I/O errors. Correct it. Change error message capitalization for consistency. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-25device: split IpcSetOperation into partsJosh Bleecher Snyder
The goal of this change is to make the structure of IpcSetOperation easier to follow. IpcSetOperation contains a small state machine: It starts by configuring the device, then shifts to configuring one peer at a time. Having the code all in one giant method obscured that structure. Split out the parts into helper functions and encapsulate the peer state. This makes the overall structure more apparent. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-25device: expand IPCErrorJosh Bleecher Snyder
Expand IPCError to contain a wrapped error, and add a helper to make constructing such errors easier. Add a defer-based "log on returned error" to IpcSetOperation. This lets us simplify all of the error return paths. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-25device: remove dead codeJosh Bleecher Snyder
If device.NewPeer returns a nil error, then the returned peer is always non-nil. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-25device: return errors from ipc scannerJosh Bleecher Snyder
The code as written will drop any read errors on the floor. Fix that. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-01-21netstack: further sequester with own go.mod and go.sumJason A. Donenfeld
In order to avoid even the flirtation with passing on these dependencies to ordinary consumers of wireguard-go, this commit makes a new go.mod that's entirely separate from the root one. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-21netstack: introduce new module for gvisor tcp tun adapterJason A. Donenfeld
The Go linker isn't smart enough to prevent gvisor from being pulled into modules that use other parts of tun/, due to the types exposed. So, we put this into its own standalone module. We use this as an opportunity to introduce some example code as well. I'm still not happy that this not only clutters this repo's go.sum, but all the other projects that consume it, but it seems like making a new module inside of this repo will lead to even greater confusion. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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