From 6182e0b80f9b5c8da19ab3a60db2e4cc10b259e8 Mon Sep 17 00:00:00 2001
From: Donald Hunter <donald.hunter@gmail.com>
Date: Thu, 12 Sep 2024 10:59:44 +0100
Subject: [PATCH] docs/bpf: Add missing BPF program types to docs
Update the table of program types in the libbpf documentation with the
recently added program types.
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240912095944.6386-1-donald.hunter@gmail.com
---
Documentation/bpf/libbpf/program_types.rst | 30 +++++++++++++++++++---
1 file changed, 26 insertions(+), 4 deletions(-)
diff --git a/Documentation/bpf/libbpf/program_types.rst b/Documentation/bpf/libbpf/program_types.rst
index 63bb88846e508..218b020a2f81f 100644
--- a/Documentation/bpf/libbpf/program_types.rst
+++ b/Documentation/bpf/libbpf/program_types.rst
@@ -121,6 +121,8 @@ described in more detail in the footnotes.
+-------------------------------------------+----------------------------------------+----------------------------------+-----------+
| ``BPF_PROG_TYPE_LWT_XMIT`` | | ``lwt_xmit`` | |
+-------------------------------------------+----------------------------------------+----------------------------------+-----------+
+| ``BPF_PROG_TYPE_NETFILTER`` | | ``netfilter`` | |
++-------------------------------------------+----------------------------------------+----------------------------------+-----------+
| ``BPF_PROG_TYPE_PERF_EVENT`` | | ``perf_event`` | |
+-------------------------------------------+----------------------------------------+----------------------------------+-----------+
| ``BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE`` | | ``raw_tp.w+`` [#rawtp]_ | |
@@ -131,11 +133,23 @@ described in more detail in the footnotes.
+ + +----------------------------------+-----------+
| | | ``raw_tracepoint+`` | |
+-------------------------------------------+----------------------------------------+----------------------------------+-----------+
-| ``BPF_PROG_TYPE_SCHED_ACT`` | | ``action`` | |
+| ``BPF_PROG_TYPE_SCHED_ACT`` | | ``action`` [#tc_legacy]_ | |
+-------------------------------------------+----------------------------------------+----------------------------------+-----------+
-| ``BPF_PROG_TYPE_SCHED_CLS`` | | ``classifier`` | |
+| ``BPF_PROG_TYPE_SCHED_CLS`` | | ``classifier`` [#tc_legacy]_ | |
+ + +----------------------------------+-----------+
-| | | ``tc`` | |
+| | | ``tc`` [#tc_legacy]_ | |
++ +----------------------------------------+----------------------------------+-----------+
+| | ``BPF_NETKIT_PRIMARY`` | ``netkit/primary`` | |
++ +----------------------------------------+----------------------------------+-----------+
+| | ``BPF_NETKIT_PEER`` | ``netkit/peer`` | |
++ +----------------------------------------+----------------------------------+-----------+
+| | ``BPF_TCX_INGRESS`` | ``tc/ingress`` | |
++ +----------------------------------------+----------------------------------+-----------+
+| | ``BPF_TCX_EGRESS`` | ``tc/egress`` | |
++ +----------------------------------------+----------------------------------+-----------+
+| | ``BPF_TCX_INGRESS`` | ``tcx/ingress`` | |
++ +----------------------------------------+----------------------------------+-----------+
+| | ``BPF_TCX_EGRESS`` | ``tcx/egress`` | |
+-------------------------------------------+----------------------------------------+----------------------------------+-----------+
| ``BPF_PROG_TYPE_SK_LOOKUP`` | ``BPF_SK_LOOKUP`` | ``sk_lookup`` | |
+-------------------------------------------+----------------------------------------+----------------------------------+-----------+
@@ -155,7 +169,9 @@ described in more detail in the footnotes.
+-------------------------------------------+----------------------------------------+----------------------------------+-----------+
| ``BPF_PROG_TYPE_SOCK_OPS`` | ``BPF_CGROUP_SOCK_OPS`` | ``sockops`` | |
+-------------------------------------------+----------------------------------------+----------------------------------+-----------+
-| ``BPF_PROG_TYPE_STRUCT_OPS`` | | ``struct_ops+`` | |
+| ``BPF_PROG_TYPE_STRUCT_OPS`` | | ``struct_ops+`` [#struct_ops]_ | |
++ + +----------------------------------+-----------+
+| | | ``struct_ops.s+`` [#struct_ops]_ | Yes |
+-------------------------------------------+----------------------------------------+----------------------------------+-----------+
| ``BPF_PROG_TYPE_SYSCALL`` | | ``syscall`` | Yes |
+-------------------------------------------+----------------------------------------+----------------------------------+-----------+
@@ -209,5 +225,11 @@ described in more detail in the footnotes.
``a-zA-Z0-9_.*?``.
.. [#lsm] The ``lsm`` attachment format is ``lsm[.s]/<hook>``.
.. [#rawtp] The ``raw_tp`` attach format is ``raw_tracepoint[.w]/<tracepoint>``.
+.. [#tc_legacy] The ``tc``, ``classifier`` and ``action`` attach types are deprecated, use
+ ``tcx/*`` instead.
+.. [#struct_ops] The ``struct_ops`` attach format supports ``struct_ops[.s]/<name>`` convention,
+ but ``name`` is ignored and it is recommended to just use plain
+ ``SEC("struct_ops[.s]")``. The attachments are defined in a struct initializer
+ that is tagged with ``SEC(".struct_ops[.link]")``.
.. [#tp] The ``tracepoint`` attach format is ``tracepoint/<category>/<name>``.
.. [#iter] The ``iter`` attach format is ``iter[.s]/<struct-name>``.
--
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