From upstream's changelog:
* timers: queue up killing ephemerals only if not already
We fix up a small detail in the timer logic that changed during the last
snapshot.
* receive: trim incoming packets to IP header length
Packets are now trimmed to their actual length, not their length+padding,
before handing to the rest of the network subsystem, so that packets look
pretty in tcpdump. This doesn't actually affect what userspace sees, since the
kernel trims it at a later stage, but it does make pcaps a bit nicer to use.
* curve25519: use more standard label convention in asm
This ensures that perf(1) shows the function name instead of the label name.
* compat: remove padata hotplug code
Fixes building on kernels that have HOTPLUG enabled but no PADATA support.
* config: add new line for style
* device: do-while assignment style
* peer: explicitly initialize atomic
Style.
* noise: fix race when replacing handshake
Handle a situation in which three peers, all running on the same system, begin
a handshake with all three of each other, at exactly the same time, on a
multi-CPU system.
* random: wait for random bytes when generating nonces and ephemerals
We've been working with upstream to add a new API to the kernel for ensuring
that the RNG actually is seeded. Until they merge it for 4.13, we provide a
poly-fill to the compat code. This means that WireGuard will block during
handshakes until the RNG has enough entropy, so that it's never in a
circumstance in which ephemeral keys are generated from bad randomness.
* go test: properly pad message
* go test: correct tai64n and formatting
* external-tests: add keepalive packet
* go test: use x/crypto for blake2s now that we have 128-bit mac
* external-tests: trim the fat
Improvements for the external tests.
* wg-quick: make sure we have empty table for both v6 and v4
* wg-quick: match ipv6 default route more broadly
Tiny nits with wg-quick, one of which should now allow multiple v6-only
wg-quick instances running at the same time.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
c833b249a9