Bug 1780124

Summary: eBPF: supported components [to be repeated in each version and updated with the support status]
Product: Red Hat Enterprise Linux 8 Reporter: Jaroslav Klech <jklech>
Component: doc-Release_Notes-8-en-USAssignee: Lucie Vařáková <lmanasko>
Status: CLOSED CURRENTRELEASE QA Contact: RHEL DPM <rhel-docs>
Severity: unspecified Docs Contact: Jaroslav Klech <jklech>
Priority: medium    
Version: 8.2CC: jbenc, jmarchan, jolsa, lkuprova, lmanasko, pasik, rhel-docs, skozina, skurup, thoiland
Target Milestone: rcKeywords: Documentation
Target Release: 8.4   
Hardware: Unspecified   
OS: Unspecified   
Fixed In Version: Doc Type: Enhancement
Doc Text:
.Extended Berkeley Packet Filter for RHEL 8.6 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, followed by its verification, code translation to the native machine code with just-in-time compilation, and then the virtual machine executes the code. Red Hat ships numerous components that utilize the *eBPF* virtual machine. Each component is in a different development phase, and thus not all components are currently fully supported. In RHEL 8.6, the following *eBPF* components are supported: * The *BPF Compiler Collection (BCC)* tools 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 *eBPF for Traffic Control (tc)* feature, which enables programmable packet processing inside the kernel network data path. * The `bpftrace` tracing language * The *eXpress Data Path (XDP)* feature, which provides access to received packets before the kernel networking stack processes them, is supported under specific conditions. For more information see, link:https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/8.4_release_notes/index#BZ-1952421[XDP is conditionally supported] and link:https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/configuring_and_managing_networking/index#ref_overview-of-networking-ebpf-features-in-rhel_assembly_understanding-the-ebpf-features-in-rhel[Overview of networking eBPF features in RHEL]. * The `libbpf` package, which is crucial for bpf related applications like `bpftrace` and `bpf/xdp` development. * The `xdp-tools` package, which contains userspace support utilities for the *XDP* feature, is now supported on the AMD and Intel 64-bit architectures. This includes the `libxdp` library, the `xdp-loader` utility for loading XDP programs, the `xdp-filter` example program for packet filtering, and the `xdpdump` utility for capturing packets from a network interface with XDP enabled. Note that all other *eBPF* components are available as Technology Preview, unless a specific component is indicated as supported. The following notable *eBPF* components are currently available as Technology Preview: * The `AF_XDP` socket for connecting the *eXpress Data Path (XDP)* path to user space For more information regarding the Technology Preview components, see xref:BZ-1559616[].
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Last Closed: 2020-01-24 11:44:45 UTC Type: Enhancement
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version: