forked from Minki/linux
07ff4f0126
Describe the purpose of BPF sk_lookup program, how it can be attached, when it gets invoked, and what information gets passed to it. Point the reader to examples and further documentation. Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200821100226.403844-1-jakub@cloudflare.com
91 lines
1.7 KiB
ReStructuredText
91 lines
1.7 KiB
ReStructuredText
=================
|
|
BPF Documentation
|
|
=================
|
|
|
|
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
|
|
textual documentation is (for historical reasons) described in
|
|
: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.
|
|
|
|
The primary info for the bpf syscall is available in the `man-pages`_
|
|
for `bpf(2)`_.
|
|
|
|
BPF Type Format (BTF)
|
|
=====================
|
|
|
|
.. toctree::
|
|
:maxdepth: 1
|
|
|
|
btf
|
|
|
|
|
|
Frequently asked questions (FAQ)
|
|
================================
|
|
|
|
Two sets of Questions and Answers (Q&A) are maintained.
|
|
|
|
.. toctree::
|
|
:maxdepth: 1
|
|
|
|
bpf_design_QA
|
|
bpf_devel_QA
|
|
|
|
|
|
Helper functions
|
|
================
|
|
|
|
* `bpf-helpers(7)`_ maintains a list of helpers available to eBPF programs.
|
|
|
|
|
|
Program types
|
|
=============
|
|
|
|
.. toctree::
|
|
:maxdepth: 1
|
|
|
|
prog_cgroup_sockopt
|
|
prog_cgroup_sysctl
|
|
prog_flow_dissector
|
|
bpf_lsm
|
|
prog_sk_lookup
|
|
|
|
|
|
Map types
|
|
=========
|
|
|
|
.. toctree::
|
|
:maxdepth: 1
|
|
|
|
map_cgroup_storage
|
|
|
|
|
|
Testing and debugging BPF
|
|
=========================
|
|
|
|
.. toctree::
|
|
:maxdepth: 1
|
|
|
|
drgn
|
|
s390
|
|
|
|
|
|
Other
|
|
=====
|
|
|
|
.. toctree::
|
|
:maxdepth: 1
|
|
|
|
ringbuf
|
|
|
|
.. Links:
|
|
.. _networking-filter: ../networking/filter.rst
|
|
.. _man-pages: https://www.kernel.org/doc/man-pages/
|
|
.. _bpf(2): https://man7.org/linux/man-pages/man2/bpf.2.html
|
|
.. _bpf-helpers(7): https://man7.org/linux/man-pages/man7/bpf-helpers.7.html
|
|
.. _BPF and XDP Reference Guide: https://docs.cilium.io/en/latest/bpf/
|