package features

import "github.com/cilium/ebpf/features"

Package features allows probing for BPF features available to the calling process.

In general, the error return values from feature probes in this package all have the following semantics unless otherwise specified:

err == nil: The feature is available.
errors.Is(err, ebpf.ErrNotSupported): The feature is not available.
err != nil: Any errors encountered during probe execution, wrapped.

Note that the latter case may include false negatives, and that resource creation may succeed despite an error being returned. For example, some map and program types cannot reliably be probed and will return an inconclusive error.

As a rule, only `nil` and `ebpf.ErrNotSupported` are conclusive.

Probe results are cached by the library and persist throughout any changes to the process' environment, like capability changes.

Index ¶

Source Files ¶

doc.go