This directory contains documentation for the BPF (Berkeley Packet
Filter) facility, with a focus on the extended BPF version (eBPF).
-This kernel side documentation is still work in progress. The main
+This kernel side documentation is still work in progress. The main
textual documentation is (for historical reasons) described in
-`Documentation/networking/filter.rst`_, which describe both classical
-and extended BPF instruction-set.
+:ref:`networking-filter`, which describe both classical and extended
+BPF instruction-set.
The Cilium project also maintains a `BPF and XDP Reference Guide`_
that goes into great technical depth about the BPF Architecture.
.. Links:
-.. _Documentation/networking/filter.rst: ../networking/filter.txt
+.. _networking-filter: ../networking/filter.rst
.. _man-pages: https://www.kernel.org/doc/man-pages/
-.. _bpf(2): http://man7.org/linux/man-pages/man2/bpf.2.html
-.. _BPF and XDP Reference Guide: http://cilium.readthedocs.io/en/latest/bpf/
+.. _bpf(2): https://man7.org/linux/man-pages/man2/bpf.2.html
+.. _BPF and XDP Reference Guide: https://docs.cilium.io/en/latest/bpf/
.. SPDX-License-Identifier: GPL-2.0
+.. _networking-filter:
+
=======================================================
Linux Socket Filtering aka Berkeley Packet Filter (BPF)
=======================================================