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2021-03-23version: bump snapshot0.0.20210323Jason A. Donenfeld
2021-03-23tun: freebsd: use broadcast mode instead of PPP modeJason A. Donenfeld
It makes the routing configuration simpler. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-11device: signal to close device in separate routineJason A. Donenfeld
Otherwise we wind up deadlocking. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-11tun: linux: do not spam events every second from hack listenerJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-08tun: freebsd: allow empty namesKay Diam
This change allows omitting the tun interface name setting. When the name is not set, the kernel automatically picks up the tun name and index. Signed-off-by: Kay Diam <kay.diam@gmail.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-08winpipe: move syscalls into x/sysJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-08memmod: use resource functions from x/sysJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-08memmod: do not use IsBadReadPtrJason A. Donenfeld
It should be enough to check for the trailing zero name. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-08conn: linux: unexport mutexJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-08mod: bump x/sysJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-06mod: rename COPYING to LICENSEJason A. Donenfeld
Otherwise the netstack module doesn't show up on the package site. https://github.com/golang/go/issues/43817#issuecomment-764987580 Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-06tun/netstack: bump deps and apiJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-03-06device: get rid of peers.empty boolean in timersActiveJason A. Donenfeld
There's no way for len(peers)==0 when a current peer has isRunning==false. This requires some struct reshuffling so that the uint64 pointer is aligned. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-25conn: implement RIO for fast Windows UDP socketsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-23global: remove TODO name graffitiJason A. Donenfeld
Googlers have a habit of graffiting their name in TODO items that then are never addressed, and other people won't go near those because they're marked territory of another animal. I've been gradually cleaning these up as I see them, but this commit just goes all the way and removes the remaining stragglers. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-23device: test up/down using virtual connJason A. Donenfeld
This prevents port clashing bugs. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-23device: cleanup unused test componentsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-23conn: make binds replacableJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-22device: disable waitpool testsJason A. Donenfeld
This code is stable, and the test is finicky, especially on high core count systems, so just disable it. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-22tun: make NativeTun.Close well behaved, not crash on double closeBrad Fitzpatrick
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-22README: bump document Go requirement to 1.16Brad Fitzpatrick
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-02-17global: stop using ioutilJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-16conn: bump to 1.16 and get rid of NetErrClosed hackJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-12version: bump snapshot0.0.20210212Jason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-12device: remove old version fileJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-11gitignore: remove old hacksJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-10device: use container/list instead of open coding itJason A. Donenfeld
This linked list implementation is awful, but maybe Go 2 will help eventually, and at least we're not open coding the hlist any more. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-10device: retry Up() in up/down testJason A. Donenfeld
We're loosing our ownership of the port when bringing the device down, which means another test process could reclaim it. Avoid this by retrying for 4 seconds. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-10conn: close old fd before trying againJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-10device: flush peer queues before starting deviceJason A. Donenfeld
In case some old packets snuck in there before, this flushes before starting afresh. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-10device: create peer queues at peer creation timeJason A. Donenfeld
Rather than racing with Start(), since we're never destroying these queues, we just set the variables at creation time. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-10device: return error from Up() and Down()Jason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09rwcancel: add an explicit close callJason A. Donenfeld
This lets us collect FDs even if the GC doesn't do it for us. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09rwcancel: use errors.Is for unwrappingJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09tun: use errors.Is for unwrappingJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09conn: use errors.Is for unwrappingJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09device: handshake routine writes into encryption queueJason A. Donenfeld
Since RoutineHandshake calls peer.SendKeepalive(), it potentially is a writer into the encryption queue, so we need to bump the wg count. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09device: make RoutineReadFromTUN keep encryption queue aliveJosh Bleecher Snyder
RoutineReadFromTUN can trigger a call to SendStagedPackets. SendStagedPackets attempts to protect against sending on the encryption queue by checking peer.isRunning and device.isClosed. However, those are subject to TOCTOU bugs. If that happens, we get this: goroutine 1254 [running]: golang.zx2c4.com/wireguard/device.(*Peer).SendStagedPackets(0xc000798300) .../wireguard-go/device/send.go:321 +0x125 golang.zx2c4.com/wireguard/device.(*Device).RoutineReadFromTUN(0xc000014780) .../wireguard-go/device/send.go:271 +0x21c created by golang.zx2c4.com/wireguard/device.NewDevice .../wireguard-go/device/device.go:315 +0x298 Fix this with a simple, big hammer: Keep the encryption queue alive as long as it might be written to. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-02-09conn: try harder to have v4 and v6 ports agreeJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09device: only allocate peer queues onceJosh Bleecher Snyder
This serves two purposes. First, it makes repeatedly stopping then starting a peer cheaper. Second, it prevents a data race observed accessing the queues. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-02-09device: clarify device.state.state docs (again)Josh Bleecher Snyder
Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-02-09device: run fewer iterations in TestUpDownJosh Bleecher Snyder
The high iteration count was useful when TestUpDown was the nexus of new bugs to investigate. Now that it has stabilized, that's less valuable. And it slows down running the tests and crowds out other tests. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-02-09device: run fewer trials in TestWaitPool when race detector enabledJosh Bleecher Snyder
On a many-core machine with the race detector enabled, this test can take several minutes to complete. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-02-09device: remove nil elem check in finalizersJosh Bleecher Snyder
This is not necessary, and removing it speeds up detection of UAF bugs. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
2021-02-09device: rename unsafeRemovePeer to removePeerLockedJason A. Donenfeld
This matches the new naming scheme of upLocked and downLocked. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09device: remove deviceStateNewJason A. Donenfeld
It's never used and we won't have a use for it. Also, move to go-running stringer, for those without GOPATHs. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09device: fix comment typo and shorten state.mu.Lock to state.LockJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09device: fix typo in commentJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09device: fix alignment on 32-bit machines and test for itJason A. Donenfeld
The test previously checked the offset within a substruct, not the offset within the allocated struct, so this adds the two together. It then fixes an alignment crash on 32-bit machines. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-02-09device: do not log on idempotent device state changeJason A. Donenfeld
Part of being actually idempotent is that we shouldn't penalize code that takes advantage of this property with a log splat. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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