Bug 2070506
Summary: | eBPF: release notes | ||
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Product: | Red Hat Enterprise Linux 9 | Reporter: | Viktor Malik <vmalik> |
Component: | doc-Release_Notes-9-en-US | Assignee: | Lenka Špačková <lkuprova> |
Status: | CLOSED CURRENTRELEASE | QA Contact: | RHEL DPM <rhel-docs> |
Severity: | unspecified | Docs Contact: | Jaroslav Klech <jklech> |
Priority: | medium | ||
Version: | 9.0 | CC: | rhel-docs, zsun |
Target Milestone: | rc | Keywords: | Documentation |
Target Release: | 9.0 | ||
Hardware: | Unspecified | ||
OS: | Unspecified | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Enhancement | |
Doc Text: |
.Extended Berkeley Packet Filter is supported in RHEL 9
The *Extended Berkeley Packet Filter (eBPF)* is an in-kernel virtual machine that allows code execution in the kernel space, in the restricted sandbox environment with access to a limited set of functions. The virtual machine executes a special assembly-like code.
The *eBPF* bytecode first loads to the kernel. Then the bytecode is verified and translated to the native machine code with just-in-time compilation. Finally, the virtual machine executes the code.
Red Hat ships numerous components that utilize the *eBPF* virtual machine. In RHEL 9, these components include:
* The *BPF Compiler Collection (BCC)* package, which provides tools for I/O analysis, networking, and monitoring of Linux operating systems using *eBPF*.
* The *BCC* library, which allows the development of tools similar to those provided in the *BCC* tools package.
* The `bpftrace` tracing language.
* The `libbpf` package, which is crucial for `bpf` development and `bpf`-related applications like `bpftrace`.
** The `XDP` and `AF_XDP` API parts of the `libbpf` library are not supported and may be removed in a future release.
* The *eBPF for Traffic Control (tc)* feature, which enables programmable packet processing inside the kernel network data path.
* The *eXpress Data Path (XDP)* feature, which provides access to the received packets before the kernel networking stack processes them. Red Hat supports *XDP* only if it is used through the `libxdp` library.
* The `xdp-tools` package, which contains user-space support utilities for the *XDP* feature and is supported on the AMD64 and Intel64 CPU architectures. The `xdp-tools` package includes:
** The `libxdp` library.
** The `xdp-loader` utility for loading XDP programs.
** The `xdp-filter` example program for packet filtering.
** The `xdpdump` utility for capturing packets from a network interface with *XDP* enabled. The `xdpdump` utility is currently supported only on AMD64 and Intel64 CPU architectures. It is available for other architectures as Technology Preview.
* The `AF_XDP` socket for connecting the *eXpress Data Path (XDP)* path to user-space.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2022-05-19 05:57:01 UTC | Type: | Enhancement |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Viktor Malik
2022-03-31 10:18:01 UTC
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