TestConcurrencySafety does other things concurrently with tunnel use. It is intended to be used with the race detector to catch data races.

Test that timestamps are monotonic as required by Wireguard and that nanosecond-level information is whitened to prevent side channel attacks.

TestNativeTunAlignment checks that atomically-accessed fields are aligned to 64-bit boundaries, as required by the atomic package. Unfortunately, vio

TestRateJugglerAlignment checks that atomically-accessed fields are aligned to 64-bit boundaries, as required by the atomic package. Unfortunately, v

* Test ported from kernel implementation: * selftest/allowedips.h */

* Test ported from kernel implementation: * selftest/allowedips.h */

Write writes to a file handle.

Write writes bytes to a message pipe in byte mode. Zero-byte writes are ignored, since they are used to implement CloseWrite.

clearPointers clears elem fields that contain pointers. This makes the garbage collector's life easier and avoids accidentally keeping other objects a

getGSOSize parses control for UDP_GRO and if found returns its GSO size data.

getGSOSize parses control for UDP_GRO and if found returns its GSO size data.

TODO: macOS, FreeBSD and other BSDs likely do support the sticky sockets {get,set}srcControl feature set, but use alternatively named flags and need p

* Do basic precomputations */

lookupOrInsert looks up a flow for the provided packet and metadata, returning the packets found for the flow, or inserting a new one if none is found