aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorJoe Stringer <joe@cilium.io>2021-03-02 09:19:46 -0800
committerAlexei Starovoitov <ast@kernel.org>2021-03-04 18:39:46 -0800
commit6197e5b7b1b5acd1e9b04bdf3527c694d84a27e2 (patch)
tree6527cf669c2bbc3e1025d5c761e66678c22caffc
parentaccbd33a9b0328777899a85d148040e4d8921d87 (diff)
docs/bpf: Add bpf() syscall command reference
Generate the syscall command reference from the UAPI header file and include it in the main bpf docs page. Signed-off-by: Joe Stringer <joe@cilium.io> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Quentin Monnet <quentin@isovalent.com> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/20210302171947.2268128-15-joe@cilium.io
-rw-r--r--Documentation/bpf/index.rst9
-rw-r--r--Documentation/userspace-api/ebpf/index.rst17
-rw-r--r--Documentation/userspace-api/ebpf/syscall.rst24
-rw-r--r--Documentation/userspace-api/index.rst1
-rw-r--r--MAINTAINERS1
5 files changed, 49 insertions, 3 deletions
diff --git a/Documentation/bpf/index.rst b/Documentation/bpf/index.rst
index 4f2874b729c3..a702f67dd45f 100644
--- a/Documentation/bpf/index.rst
+++ b/Documentation/bpf/index.rst
@@ -12,9 +12,6 @@ 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)
=====================
@@ -35,6 +32,12 @@ Two sets of Questions and Answers (Q&A) are maintained.
bpf_design_QA
bpf_devel_QA
+Syscall API
+===========
+
+The primary info for the bpf syscall is available in the `man-pages`_
+for `bpf(2)`_. For more information about the userspace API, see
+Documentation/userspace-api/ebpf/index.rst.
Helper functions
================
diff --git a/Documentation/userspace-api/ebpf/index.rst b/Documentation/userspace-api/ebpf/index.rst
new file mode 100644
index 000000000000..473dfba78116
--- /dev/null
+++ b/Documentation/userspace-api/ebpf/index.rst
@@ -0,0 +1,17 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+eBPF Userspace API
+==================
+
+eBPF is a kernel mechanism to provide a sandboxed runtime environment in the
+Linux kernel for runtime extension and instrumentation without changing kernel
+source code or loading kernel modules. eBPF programs can be attached to various
+kernel subsystems, including networking, tracing and Linux security modules
+(LSM).
+
+For internal kernel documentation on eBPF, see Documentation/bpf/index.rst.
+
+.. toctree::
+ :maxdepth: 1
+
+ syscall
diff --git a/Documentation/userspace-api/ebpf/syscall.rst b/Documentation/userspace-api/ebpf/syscall.rst
new file mode 100644
index 000000000000..ea9918084221
--- /dev/null
+++ b/Documentation/userspace-api/ebpf/syscall.rst
@@ -0,0 +1,24 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+eBPF Syscall
+------------
+
+:Authors: - Alexei Starovoitov <ast@kernel.org>
+ - Joe Stringer <joe@wand.net.nz>
+ - Michael Kerrisk <mtk.manpages@gmail.com>
+
+The primary info for the bpf syscall is available in the `man-pages`_
+for `bpf(2)`_.
+
+bpf() subcommand reference
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+.. kernel-doc:: include/uapi/linux/bpf.h
+ :doc: eBPF Syscall Preamble
+
+.. kernel-doc:: include/uapi/linux/bpf.h
+ :doc: eBPF Syscall Commands
+
+.. Links:
+.. _man-pages: https://www.kernel.org/doc/man-pages/
+.. _bpf(2): https://man7.org/linux/man-pages/man2/bpf.2.html
diff --git a/Documentation/userspace-api/index.rst b/Documentation/userspace-api/index.rst
index d29b020e5622..1e2438b7afa0 100644
--- a/Documentation/userspace-api/index.rst
+++ b/Documentation/userspace-api/index.rst
@@ -21,6 +21,7 @@ place where this information is gathered.
unshare
spec_ctrl
accelerators/ocxl
+ ebpf/index
ioctl/index
iommu
media/index
diff --git a/MAINTAINERS b/MAINTAINERS
index 8d56c7044067..4446d1455354 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3209,6 +3209,7 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git
F: Documentation/bpf/
F: Documentation/networking/filter.rst
+F: Documentation/userspace-api/ebpf/
F: arch/*/net/*
F: include/linux/bpf*
F: include/linux/filter.h

Privacy Policy