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2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/Documentation/bpf/index.rst
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 This directory contains documentation for the BPF (Berkeley Packet
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 Filter) facility, with a focus on the extended BPF version (eBPF).
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-This kernel side documentation is still work in progress.  The main
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+This kernel side documentation is still work in progress. The main
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 textual documentation is (for historical reasons) described in
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-`Documentation/networking/filter.txt`_, which describe both classical
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-and extended BPF instruction-set.
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+:ref:`networking-filter`, which describe both classical and extended
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+BPF instruction-set.
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 The Cilium project also maintains a `BPF and XDP Reference Guide`_
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 that goes into great technical depth about the BPF Architecture.
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 The primary info for the bpf syscall is available in the `man-pages`_
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 for `bpf(2)`_.
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+BPF Type Format (BTF)
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+=====================
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+
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+.. toctree::
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+   :maxdepth: 1
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+
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+   btf
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 Frequently asked questions (FAQ)
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    bpf_devel_QA
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+Helper functions
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+================
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+
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+* `bpf-helpers(7)`_ maintains a list of helpers available to eBPF programs.
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+
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+
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+Program types
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+=============
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+
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+.. toctree::
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+   :maxdepth: 1
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+
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+   prog_cgroup_sockopt
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+   prog_cgroup_sysctl
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+   prog_flow_dissector
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+   bpf_lsm
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+   prog_sk_lookup
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+
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+
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+Map types
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+=========
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+
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+.. toctree::
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+   :maxdepth: 1
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+
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+   map_cgroup_storage
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+
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+
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+Testing and debugging BPF
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+=========================
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+
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+.. toctree::
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+   :maxdepth: 1
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+
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+   drgn
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+   s390
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+
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+
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+Other
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+=====
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+
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+.. toctree::
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+   :maxdepth: 1
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+
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+   ringbuf
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+
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 .. Links:
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-.. _Documentation/networking/filter.txt: ../networking/filter.txt
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+.. _networking-filter: ../networking/filter.rst
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 .. _man-pages: https://www.kernel.org/doc/man-pages/
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-.. _bpf(2): http://man7.org/linux/man-pages/man2/bpf.2.html
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-.. _BPF and XDP Reference Guide: http://cilium.readthedocs.io/en/latest/bpf/
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+.. _bpf(2): https://man7.org/linux/man-pages/man2/bpf.2.html
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+.. _bpf-helpers(7): https://man7.org/linux/man-pages/man7/bpf-helpers.7.html
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+.. _BPF and XDP Reference Guide: https://docs.cilium.io/en/latest/bpf/