1 .. SPDX-License-Identifier: BSD-3-Clause
2 Copyright(c) 2018 Intel Corporation.
4 Berkeley Packet Filter Library
5 ==============================
7 The DPDK provides an BPF library that gives the ability
8 to load and execute Enhanced Berkeley Packet Filter (eBPF) bytecode within
9 user-space dpdk application.
11 It supports basic set of features from eBPF spec.
13 `eBPF spec <https://www.kernel.org/doc/Documentation/networking/filter.txt>`
15 Also it introduces basic framework to load/unload BPF-based filters
16 on eth devices (right now only via SW RX/TX callbacks).
18 The library API provides the following basic operations:
20 * Create a new BPF execution context and load user provided eBPF code into it.
22 * Destroy an BPF execution context and its runtime structures and free the associated memory.
24 * Execute eBPF bytecode associated with provided input parameter.
26 * Provide information about natively compiled code for given BPF context.
28 * Load BPF program from the ELF file and install callback to execute it on given ethdev port/queue.
30 Not currently supported eBPF features
31 -------------------------------------
33 - JIT for non X86_64 platforms
38 - external function calls for 32-bit platforms