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2018-05-24compat: don't clash with get_random_u32 backportsJason A. Donenfeld
Our previous heuristic wasn't good enough, since CopperheadOS backported CANARY_MASK without backporting get_random_u32, as Qualcomm did, so now we just entirely rename all invocations of the function. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-24version: bump snapshotJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-22compat: work around qcom 4.9 backportsJason A. Donenfeld
Qualcomm backported the get_random_u32 patch, even though kernel.org didn't, which is a problem. They also backported another patch in the same place which defines a new macro variable, so use this as a differentiator. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-22qemu: bump default kernel for gcc 8.1Jason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-22allowedips: set pointer to null before freeingJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-19version: bump snapshotJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-19timers: no need to clear keepalive in persistent keepaliveJason A. Donenfeld
We do this after sending the keepalive anyway. This is something of a regression, though, since before we'd cancel and then send, but now we send and then cancel, so it introduces a potential race, but hopefully that isn't too big of a deal. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-19timers: clear send_keepalive timer on sending handshake responseJason A. Donenfeld
We reorganize this into also doing so on sending keepalives itself, which means the state machine is much more consistent, even if this was already implied. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-19timers: fix up commentJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-19timers: remove slack_timeJason A. Donenfeld
It's already done implicitly by recent kernels and it's not adding much here. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-18timers: reinitialize state on initJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-18timers: round up instead of down in slack_timeJason A. Donenfeld
On systems with a 100hz tick, this causes handshakes to be retried in slightly less than 5 seconds, which means they aren't sent at all. This has the effect of the handshakes entirely stopping their retry cycle until the next data packet is sent. Reported-by: Andrew He <andrewhe@mit.edu> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-18chacha20poly1305: add mips32 implementationRené van Dorst
Signed-off-by: René van Dorst <opensource@vdorst.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-18device: remove allowedips before individual peersJason A. Donenfeld
This avoids an O(n^2) traversal in favor of an O(n) one. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-15version: bump snapshotJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-14compat: backport for OpenSUSE 15Jason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-14allowedips: Fix graphviz output after endianness patchJonathan Neuschäfer
Commit 5e3532e ("allowedips: use native endian on lookup") did two things: It changed the endianness of (struct allowedips_node).bits to native endian, and it moved the CIDR masking to the output code path (walk_by_peer). Adjust print_node in src/selftest/allowedips.h to deal with these changes. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-13version: bump snapshotJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-13compat: don't clear header bits on RHELJason A. Donenfeld
The 3.10 kernel from Red Hat puts head_frag in between headers_start and headers_end. This is triggered on the latest i40e driver. This results in the packet being freed incorrectly, crashing the system. So, this patch just ensures we don't zero any of the header bits. The whole issue of zeroing header bits probably should be revisited sometime somewhat soon. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-13compat: handle RHEL 7.5's recent backportsJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-13queueing: preserve pfmemalloc header bitJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-13chacha20poly1305: make gcc 8.1 happySamuel Neves
GCC 8.1 does not know about the invariant `0 <= ctx->num < POLY1305_BLOCK_SIZE`. This results in a warning that `memcpy(ctx->data + num, inp, len);` may overflow the `data` field, which is correct for arbitrary values of `num`. To make the invariant explicit we ensure that `num` is in the required range. An alternative would be to change `ctx->num` to a 4-bit bitfield at the point of declaration. This changes the code from `test ebp, ebp; jz end` to `and ebp, 15; jz end`, which have identical performance characteristics. Signed-off-by: Samuel Neves <sneves@dei.uc.pt> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-13socket: use skb_put_dataJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-10allowedips: simplify arithmeticJason A. Donenfeld
Suggested-by: Samuel Neves <sneves@dei.uc.pt> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-10allowedips: produce better assembly with unsigned arithmeticJason A. Donenfeld
Suggested-by: Samuel Neves <sneves@dei.uc.pt> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-10allowedips: use native endian on lookupJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-05-10allowedips: add selftest for allowedips_walk_by_peerJason A. Donenfeld
Also we satisfy lockdep here. Suggested-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-23qemu: retry on 404 in wget for kernel.org raceJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-20version: bump snapshotJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-18poly1305: do not place constants in different sectionsJason A. Donenfeld
We're referencing these constants as one contiguous blob, so if there's any merging that goes on with other constants elsewhere (such as the kernel's current poly1305 implementation that we hope to replace), then these will be reordered and have the wrong values. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-16compat: remove unused dev_recursion_level backportJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-16blake2s: remove unused helperJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-16send: simplify skb_padding with nice macroJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-15send: account for route-based MTUJason A. Donenfeld
It might be that a particular route has a different MTU than the interface, via `ip route add ... dev wg0 mtu 1281`, for example. In this case, it's important that we don't accidently pad beyond the end of the MTU. We accomplish that in this patch by carrying forward the MTU from the dst if it exists. We also add a unit test for this issue. Reported-by: Roman Mamedov <rm.wg@romanrm.net> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-15qemu: bump default versionJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-13version: bump snapshotJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-05chacha20poly1305: put magic constant behind macroJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-05chacha20poly1305: add self tests from wycheproofJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-04-04curve25519: add self tests from wycheproofJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-03-09curve25519: precomp const correctnessJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-03-09curve25519: memzero in batchesJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-03-09curve25519: use cmov instead of xor for cswapJason A. Donenfeld
Also add cselect optimization. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-03-09curve25519: use precomp implementation instead of sandy2xJason A. Donenfeld
It's faster and doesn't use the FPU. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-03-09compat: support OpenSUSE 15Jason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-03-09compat: silence warning on frankenkernelsJason A. Donenfeld
Some Android 3.18 devices backport this macro. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-03-07compat: stable kernels are now receiving b87b619Jason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-03-04version: bump snapshotJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-03-04contrib: add extract-handshakes kprobe exampleJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-03-02noise: align static_identity keysJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2018-03-02compat: use correct -include pathJason A. Donenfeld
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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