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aya,aya-ebpf: implement RingBuf #629

Merged
merged 3 commits into from Oct 12, 2023
Merged

aya,aya-ebpf: implement RingBuf #629

merged 3 commits into from Oct 12, 2023

Commits on Oct 11, 2023

  1. aya: impl From<obj::InvalidMapTypeError> for MapTypeError

    @ajwerner @tamird
    ajwerner authored and tamird committed Oct 11, 2023
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  2. aya: move mmap from perf_buffer.rs to sys/mod.rs 

    mmap() is needed for the ring buffer implementation, so move it to a common module
    @willfindlay @tamird
    willfindlay authored and tamird committed Oct 11, 2023
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  3. aya: Implement RingBuf 

    This implements the userspace binding for RingBuf.

Instead of streaming the samples as heap buffers, the process_ring
function takes a callback to which we pass the event's byte region,
roughly following [libbpf]'s API design. This avoids a copy and allows
marking the consumer pointer in a timely manner.

[libbpf]: https://github.com/libbpf/libbpf/blob/master/src/ringbuf.c

Additionally, integration tests are added to demonstrate the usage
of the new APIs and to ensure that they work end-to-end.

Co-authored-by: William Findlay <william@williamfindlay.com>
Co-authored-by: Tatsuyuki Ishi <ishitatsuyuki@gmail.com>
    @ajwerner @willfindlay @ishitatsuyuki
    3 people committed Oct 11, 2023
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